diff options
| author | Sean McNeil <sean@mcneil.com> | 2008-11-19 17:11:13 +0000 |
|---|---|---|
| committer | Andy Green <agreen@pads.home.warmcat.com> | 2008-11-19 17:11:13 +0000 |
| commit | d162cf5720fb2623c14a35a4b14981789859d400 (patch) | |
| tree | fef5078a0766c78ec8670a167e1eb7a2ccc2ca85 | |
| parent | a49eff93b8d80d4db638215834c5fad462170357 (diff) | |
android-tracking.patch
Minimal set of kernel changes to support Android operation.
Note arch/arm/configs/gta02-android-defconfig
| -rw-r--r-- | arch/arm/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arm/configs/gta02-android-defconfig | 1808 | ||||
| -rw-r--r-- | drivers/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/Makefile | 1 | ||||
| -rw-r--r-- | drivers/android/Kconfig | 93 | ||||
| -rw-r--r-- | drivers/android/Makefile | 6 | ||||
| -rw-r--r-- | drivers/android/alarm.c | 542 | ||||
| -rw-r--r-- | drivers/android/binder.c | 3499 | ||||
| -rw-r--r-- | drivers/android/logger.c | 607 | ||||
| -rw-r--r-- | drivers/android/power.c | 1336 | ||||
| -rw-r--r-- | drivers/android/ram_console.c | 395 | ||||
| -rw-r--r-- | drivers/android/timed_gpio.c | 177 | ||||
| -rw-r--r-- | drivers/misc/Kconfig | 5 | ||||
| -rw-r--r-- | drivers/misc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/misc/lowmemorykiller.c | 119 | ||||
| -rw-r--r-- | include/linux/android_aid.h | 25 | ||||
| -rw-r--r-- | include/linux/android_alarm.h | 59 | ||||
| -rw-r--r-- | include/linux/android_power.h | 98 | ||||
| -rw-r--r-- | include/linux/android_timed_gpio.h | 31 | ||||
| -rw-r--r-- | include/linux/ashmem.h | 48 | ||||
| -rw-r--r-- | include/linux/binder.h | 330 | ||||
| -rw-r--r-- | include/linux/logger.h | 48 | ||||
| -rw-r--r-- | include/linux/mm.h | 2 | ||||
| -rw-r--r-- | init/Kconfig | 18 | ||||
| -rw-r--r-- | mm/Makefile | 1 | ||||
| -rw-r--r-- | mm/ashmem.c | 657 | ||||
| -rw-r--r-- | mm/shmem.c | 14 | ||||
| -rw-r--r-- | mm/tiny-shmem.c | 22 |
28 files changed, 9937 insertions, 9 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index eb42a1e6fbc..0ebe540b46f 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1283,6 +1283,8 @@ source "drivers/rtc/Kconfig" source "drivers/dma/Kconfig" +source "drivers/android/Kconfig" + source "drivers/dca/Kconfig" source "drivers/auxdisplay/Kconfig" diff --git a/arch/arm/configs/gta02-android-defconfig b/arch/arm/configs/gta02-android-defconfig new file mode 100644 index 00000000000..e8b611e2859 --- /dev/null +++ b/arch/arm/configs/gta02-android-defconfig @@ -0,0 +1,1808 @@ +# +# Automatically generated make config: don't edit +# Linux kernel version: 2.6.27 +# Sun Oct 19 12:49:09 2008 +# +CONFIG_ARM=y +CONFIG_HAVE_PWM=y +CONFIG_SYS_SUPPORTS_APM_EMULATION=y +CONFIG_GENERIC_GPIO=y +# CONFIG_GENERIC_TIME is not set +# CONFIG_GENERIC_CLOCKEVENTS is not set +CONFIG_MMU=y +CONFIG_NO_IOPORT=y +CONFIG_GENERIC_HARDIRQS=y +CONFIG_STACKTRACE_SUPPORT=y +CONFIG_HAVE_LATENCYTOP_SUPPORT=y +CONFIG_LOCKDEP_SUPPORT=y +CONFIG_TRACE_IRQFLAGS_SUPPORT=y +CONFIG_HARDIRQS_SW_RESEND=y +CONFIG_GENERIC_IRQ_PROBE=y +CONFIG_RWSEM_GENERIC_SPINLOCK=y +# CONFIG_ARCH_HAS_ILOG2_U32 is not set +# CONFIG_ARCH_HAS_ILOG2_U64 is not set +CONFIG_GENERIC_HWEIGHT=y +CONFIG_GENERIC_CALIBRATE_DELAY=y +CONFIG_ARCH_SUPPORTS_AOUT=y +CONFIG_ZONE_DMA=y +CONFIG_FIQ=y +CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y +CONFIG_VECTORS_BASE=0xffff0000 +CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config" + +# +# General setup +# +CONFIG_EXPERIMENTAL=y +CONFIG_BROKEN_ON_SMP=y +CONFIG_LOCK_KERNEL=y +CONFIG_INIT_ENV_ARG_LIMIT=32 +CONFIG_LOCALVERSION="" +# CONFIG_LOCALVERSION_AUTO is not set +CONFIG_SWAP=y +CONFIG_SYSVIPC=y +CONFIG_SYSVIPC_SYSCTL=y +# CONFIG_POSIX_MQUEUE is not set +# CONFIG_BSD_PROCESS_ACCT is not set +# CONFIG_TASKSTATS is not set +# CONFIG_AUDIT is not set +# CONFIG_IKCONFIG is not set +CONFIG_LOG_BUF_SHIFT=14 +# CONFIG_CGROUPS is not set +CONFIG_GROUP_SCHED=y +CONFIG_FAIR_GROUP_SCHED=y +# CONFIG_RT_GROUP_SCHED is not set +CONFIG_USER_SCHED=y +# CONFIG_CGROUP_SCHED is not set +CONFIG_SYSFS_DEPRECATED=y +CONFIG_SYSFS_DEPRECATED_V2=y +# CONFIG_RELAY is not set +# CONFIG_NAMESPACES is not set +# CONFIG_BLK_DEV_INITRD is not set +CONFIG_CC_OPTIMIZE_FOR_SIZE=y +CONFIG_SYSCTL=y +CONFIG_EMBEDDED=y +CONFIG_UID16=y +CONFIG_SYSCTL_SYSCALL=y +CONFIG_KALLSYMS=y +# CONFIG_KALLSYMS_ALL is not set +# CONFIG_KALLSYMS_EXTRA_PASS is not set +CONFIG_HOTPLUG=y +CONFIG_PRINTK=y +CONFIG_BUG=y +CONFIG_ELF_CORE=y +CONFIG_COMPAT_BRK=y +CONFIG_BASE_FULL=y +CONFIG_FUTEX=y +CONFIG_ANON_INODES=y +CONFIG_EPOLL=y +CONFIG_SIGNALFD=y +CONFIG_TIMERFD=y +CONFIG_EVENTFD=y +CONFIG_SHMEM=y +CONFIG_ASHMEM=y +CONFIG_VM_EVENT_COUNTERS=y +CONFIG_SLAB=y +# CONFIG_SLUB is not set +# CONFIG_SLOB is not set +# CONFIG_PROFILING is not set +# CONFIG_MARKERS is not set +CONFIG_HAVE_OPROFILE=y +# CONFIG_KPROBES is not set +# CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS is not set +# CONFIG_HAVE_IOREMAP_PROT is not set +CONFIG_HAVE_KPROBES=y +CONFIG_HAVE_KRETPROBES=y +# CONFIG_HAVE_ARCH_TRACEHOOK is not set +# CONFIG_HAVE_DMA_ATTRS is not set +# CONFIG_USE_GENERIC_SMP_HELPERS is not set +CONFIG_HAVE_CLK=y +CONFIG_PROC_PAGE_MONITOR=y +CONFIG_HAVE_GENERIC_DMA_COHERENT=y +CONFIG_SLABINFO=y +CONFIG_RT_MUTEXES=y +# CONFIG_TINY_SHMEM is not set +CONFIG_BASE_SMALL=0 +CONFIG_MODULES=y +# CONFIG_MODULE_FORCE_LOAD is not set +CONFIG_MODULE_UNLOAD=y +CONFIG_MODULE_FORCE_UNLOAD=y +# CONFIG_MODVERSIONS is not set +# CONFIG_MODULE_SRCVERSION_ALL is not set +CONFIG_KMOD=y +CONFIG_BLOCK=y +# CONFIG_LBD is not set +# CONFIG_BLK_DEV_IO_TRACE is not set +# CONFIG_LSF is not set +# CONFIG_BLK_DEV_BSG is not set +# CONFIG_BLK_DEV_INTEGRITY is not set + +# +# IO Schedulers +# +CONFIG_IOSCHED_NOOP=y +CONFIG_IOSCHED_AS=m +CONFIG_IOSCHED_DEADLINE=y +CONFIG_IOSCHED_CFQ=m +# CONFIG_DEFAULT_AS is not set +CONFIG_DEFAULT_DEADLINE=y +# CONFIG_DEFAULT_CFQ is not set +# CONFIG_DEFAULT_NOOP is not set +CONFIG_DEFAULT_IOSCHED="deadline" +CONFIG_CLASSIC_RCU=y + +# +# System Type +# +# CONFIG_ARCH_AAEC2000 is not set +# CONFIG_ARCH_INTEGRATOR is not set +# CONFIG_ARCH_REALVIEW is not set +# CONFIG_ARCH_VERSATILE is not set +# CONFIG_ARCH_AT91 is not set +# CONFIG_ARCH_CLPS7500 is not set +# CONFIG_ARCH_CLPS711X is not set +# CONFIG_ARCH_EBSA110 is not set +# CONFIG_ARCH_EP93XX is not set +# CONFIG_ARCH_FOOTBRIDGE is not set +# CONFIG_ARCH_NETX is not set +# CONFIG_ARCH_H720X is not set +# CONFIG_ARCH_IMX is not set +# CONFIG_ARCH_IOP13XX is not set +# CONFIG_ARCH_IOP32X is not set +# CONFIG_ARCH_IOP33X is not set +# CONFIG_ARCH_IXP23XX is not set +# CONFIG_ARCH_IXP2000 is not set +# CONFIG_ARCH_IXP4XX is not set +# CONFIG_ARCH_L7200 is not set +# CONFIG_ARCH_KIRKWOOD is not set +# CONFIG_ARCH_KS8695 is not set +# CONFIG_ARCH_NS9XXX is not set +# CONFIG_ARCH_LOKI is not set +# CONFIG_ARCH_MV78XX0 is not set +# CONFIG_ARCH_MXC is not set +# CONFIG_ARCH_ORION5X is not set +# CONFIG_ARCH_PNX4008 is not set +# CONFIG_ARCH_PXA is not set +# CONFIG_ARCH_RPC is not set +# CONFIG_ARCH_SA1100 is not set +CONFIG_ARCH_S3C2410=y +# CONFIG_ARCH_SHARK is not set +# CONFIG_ARCH_LH7A40X is not set +# CONFIG_ARCH_DAVINCI is not set +# CONFIG_ARCH_OMAP is not set +# CONFIG_ARCH_MSM7X00A is not set +CONFIG_PLAT_S3C24XX=y +CONFIG_CPU_S3C244X=y +CONFIG_S3C24XX_PWM=y +CONFIG_S3C2410_DMA=y +# CONFIG_S3C2410_DMA_DEBUG is not set +CONFIG_MACH_NEO1973=y +CONFIG_PLAT_S3C=y +CONFIG_CPU_LLSERIAL_S3C2410_ONLY=y +CONFIG_CPU_LLSERIAL_S3C2410=y + +# +# Boot options +# +# CONFIG_S3C_BOOT_ERROR_RESET is not set + +# +# Power management +# +# CONFIG_S3C2410_PM_DEBUG is not set +# CONFIG_S3C2410_PM_CHECK is not set +CONFIG_S3C_LOWLEVEL_UART_PORT=2 + +# +# S3C2400 Machines +# +CONFIG_CPU_S3C2410=y +CONFIG_CPU_S3C2410_DMA=y +CONFIG_S3C2410_PM=y +CONFIG_S3C2410_GPIO=y +CONFIG_S3C2410_CLOCK=y +CONFIG_S3C2410_PWM=y + +# +# S3C2410 Machines +# +# CONFIG_ARCH_SMDK2410 is not set +# CONFIG_ARCH_H1940 is not set +# CONFIG_MACH_N30 is not set +# CONFIG_ARCH_BAST is not set +# CONFIG_MACH_OTOM is not set +# CONFIG_MACH_AML_M5900 is not set +# CONFIG_MACH_TCT_HAMMER is not set +# CONFIG_MACH_VR1000 is not set +# CONFIG_MACH_QT2410 is not set +CONFIG_MACH_NEO1973_GTA01=y + +# +# S3C2412 Machines +# +# CONFIG_MACH_JIVE is not set +# CONFIG_MACH_SMDK2413 is not set +# CONFIG_MACH_SMDK2412 is not set +# CONFIG_MACH_VSTMS is not set +CONFIG_S3C2440_C_FIQ=y + +# +# S3C2440 Machines +# +# CONFIG_MACH_ANUBIS is not set +# CONFIG_MACH_OSIRIS is not set +# CONFIG_MACH_RX3715 is not set +# CONFIG_ARCH_S3C2440 is not set +# CONFIG_MACH_NEXCODER_2440 is not set +# CONFIG_MACH_AT2440EVB is not set +CONFIG_MACH_NEO1973_GTA02=y +# CONFIG_NEO1973_GTA02_2440 is not set +CONFIG_CPU_S3C2442=y + +# +# S3C2442 Machines +# + +# +# S3C2443 Machines +# +# CONFIG_MACH_SMDK2443 is not set + +# +# Processor Type +# +CONFIG_CPU_32=y +CONFIG_CPU_ARM920T=y +CONFIG_CPU_32v4T=y +CONFIG_CPU_ABRT_EV4T=y +CONFIG_CPU_PABRT_NOIFAR=y +CONFIG_CPU_CACHE_V4WT=y +CONFIG_CPU_CACHE_VIVT=y +CONFIG_CPU_COPY_V4WB=y +CONFIG_CPU_TLB_V4WBI=y +CONFIG_CPU_CP15=y +CONFIG_CPU_CP15_MMU=y + +# +# Processor Features +# +CONFIG_ARM_THUMB=y +# CONFIG_CPU_ICACHE_DISABLE is not set +# CONFIG_CPU_DCACHE_DISABLE is not set +# CONFIG_CPU_DCACHE_WRITETHROUGH is not set +# CONFIG_OUTER_CACHE is not set + +# +# Bus support +# +# CONFIG_PCI_SYSCALL is not set +# CONFIG_ARCH_SUPPORTS_MSI is not set +# CONFIG_PCCARD is not set + +# +# Kernel Features +# +# CONFIG_TICK_ONESHOT is not set +CONFIG_PREEMPT=y +CONFIG_HZ=200 +CONFIG_AEABI=y +# CONFIG_OABI_COMPAT is not set +CONFIG_ARCH_FLATMEM_HAS_HOLES=y +# CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set +CONFIG_SELECT_MEMORY_MODEL=y +CONFIG_FLATMEM_MANUAL=y +# CONFIG_DISCONTIGMEM_MANUAL is not set +# CONFIG_SPARSEMEM_MANUAL is not set +CONFIG_FLATMEM=y +CONFIG_FLAT_NODE_MEM_MAP=y +# CONFIG_SPARSEMEM_STATIC is not set +# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set +CONFIG_PAGEFLAGS_EXTENDED=y +CONFIG_SPLIT_PTLOCK_CPUS=4096 +# CONFIG_RESOURCES_64BIT is not set +CONFIG_ZONE_DMA_FLAG=1 +CONFIG_BOUNCE=y +CONFIG_VIRT_TO_BUS=y +CONFIG_ALIGNMENT_TRAP=y + +# +# Boot options +# +CONFIG_ZBOOT_ROM_TEXT=0x0 +CONFIG_ZBOOT_ROM_BSS=0x0 +CONFIG_CMDLINE="unused -- bootloader passes ATAG list" +# CONFIG_XIP_KERNEL is not set +CONFIG_KEXEC=y +CONFIG_ATAGS_PROC=y + +# +# Floating point emulation +# + +# +# At least one emulation must be selected +# + +# +# Userspace binary formats +# +CONFIG_BINFMT_ELF=y +# CONFIG_BINFMT_AOUT is not set +# CONFIG_BINFMT_MISC is not set + +# +# Power management options +# +CONFIG_PM=y +# CONFIG_PM_DEBUG is not set +CONFIG_PM_SLEEP=y +CONFIG_SUSPEND=y +CONFIG_SUSPEND_FREEZER=y +CONFIG_APM_EMULATION=y +CONFIG_ARCH_SUSPEND_POSSIBLE=y +CONFIG_NET=y + +# +# Networking options +# +CONFIG_PACKET=y +CONFIG_PACKET_MMAP=y +CONFIG_UNIX=y +CONFIG_XFRM=y +# CONFIG_XFRM_USER is not set +# CONFIG_XFRM_SUB_POLICY is not set +CONFIG_XFRM_MIGRATE=y +# CONFIG_XFRM_STATISTICS is not set +CONFIG_XFRM_IPCOMP=m +CONFIG_NET_KEY=m +CONFIG_NET_KEY_MIGRATE=y +CONFIG_INET=y +CONFIG_IP_MULTICAST=y +CONFIG_IP_ADVANCED_ROUTER=y +CONFIG_ASK_IP_FIB_HASH=y +# CONFIG_IP_FIB_TRIE is not set +CONFIG_IP_FIB_HASH=y +CONFIG_IP_MULTIPLE_TABLES=y +# CONFIG_IP_ROUTE_MULTIPATH is not set +# CONFIG_IP_ROUTE_VERBOSE is not set +CONFIG_IP_PNP=y +# CONFIG_IP_PNP_DHCP is not set +# CONFIG_IP_PNP_BOOTP is not set +# CONFIG_IP_PNP_RARP is not set +CONFIG_NET_IPIP=m +CONFIG_NET_IPGRE=m +# CONFIG_NET_IPGRE_BROADCAST is not set +# CONFIG_IP_MROUTE is not set +# CONFIG_ARPD is not set +CONFIG_SYN_COOKIES=y +CONFIG_INET_AH=m +CONFIG_INET_ESP=m +CONFIG_INET_IPCOMP=m +CONFIG_INET_XFRM_TUNNEL=m +CONFIG_INET_TUNNEL=m +CONFIG_INET_XFRM_MODE_TRANSPORT=m +CONFIG_INET_XFRM_MODE_TUNNEL=m +CONFIG_INET_XFRM_MODE_BEET=m +# CONFIG_INET_LRO is not set +CONFIG_INET_DIAG=y +CONFIG_INET_TCP_DIAG=y +# CONFIG_TCP_CONG_ADVANCED is not set +CONFIG_TCP_CONG_CUBIC=y +CONFIG_DEFAULT_TCP_CONG="cubic" +CONFIG_TCP_MD5SIG=y +# CONFIG_IP_VS is not set +CONFIG_IPV6=m +# CONFIG_IPV6_PRIVACY is not set +# CONFIG_IPV6_ROUTER_PREF is not set +# CONFIG_IPV6_OPTIMISTIC_DAD is not set +CONFIG_INET6_AH=m +CONFIG_INET6_ESP=m +CONFIG_INET6_IPCOMP=m +# CONFIG_IPV6_MIP6 is not set +CONFIG_INET6_XFRM_TUNNEL=m +CONFIG_INET6_TUNNEL=m +CONFIG_INET6_XFRM_MODE_TRANSPORT=m +CONFIG_INET6_XFRM_MODE_TUNNEL=m +CONFIG_INET6_XFRM_MODE_BEET=m +# CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set +CONFIG_IPV6_SIT=m +CONFIG_IPV6_NDISC_NODETYPE=y +CONFIG_IPV6_TUNNEL=m +# CONFIG_IPV6_MULTIPLE_TABLES is not set +# CONFIG_IPV6_MROUTE is not set +# CONFIG_NETWORK_SECMARK is not set +CONFIG_NETFILTER=y +# CONFIG_NETFILTER_DEBUG is not set +CONFIG_NETFILTER_ADVANCED=y + +# +# Core Netfilter Configuration +# +CONFIG_NETFILTER_NETLINK=m +CONFIG_NETFILTER_NETLINK_QUEUE=m +CONFIG_NETFILTER_NETLINK_LOG=m +CONFIG_NF_CONNTRACK=m +CONFIG_NF_CT_ACCT=y +CONFIG_NF_CONNTRACK_MARK=y +CONFIG_NF_CONNTRACK_EVENTS=y +# CONFIG_NF_CT_PROTO_DCCP is not set +CONFIG_NF_CT_PROTO_GRE=m +CONFIG_NF_CT_PROTO_SCTP=m +# CONFIG_NF_CT_PROTO_UDPLITE is not set +# CONFIG_NF_CONNTRACK_AMANDA is not set +CONFIG_NF_CONNTRACK_FTP=m +CONFIG_NF_CONNTRACK_H323=m +CONFIG_NF_CONNTRACK_IRC=m +CONFIG_NF_CONNTRACK_NETBIOS_NS=m +CONFIG_NF_CONNTRACK_PPTP=m +CONFIG_NF_CONNTRACK_SANE=m +CONFIG_NF_CONNTRACK_SIP=m +CONFIG_NF_CONNTRACK_TFTP=m +CONFIG_NF_CT_NETLINK=m +CONFIG_NETFILTER_XTABLES=m +CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m +CONFIG_NETFILTER_XT_TARGET_CONNMARK=m +CONFIG_NETFILTER_XT_TARGET_DSCP=m +CONFIG_NETFILTER_XT_TARGET_MARK=m +CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m +CONFIG_NETFILTER_XT_TARGET_NFLOG=m +# CONFIG_NETFILTER_XT_TARGET_RATEEST is not set +CONFIG_NETFILTER_XT_TARGET_TCPMSS=m +# CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP is not set +# CONFIG_NETFILTER_XT_MATCH_COMMENT is not set +CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m +# CONFIG_NETFILTER_XT_MATCH_CONNLIMIT is not set +CONFIG_NETFILTER_XT_MATCH_CONNMARK=m +CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m +CONFIG_NETFILTER_XT_MATCH_DCCP=m +CONFIG_NETFILTER_XT_MATCH_DSCP=m +CONFIG_NETFILTER_XT_MATCH_ESP=m +CONFIG_NETFILTER_XT_MATCH_HELPER=m +# CONFIG_NETFILTER_XT_MATCH_IPRANGE is not set +CONFIG_NETFILTER_XT_MATCH_LENGTH=m +CONFIG_NETFILTER_XT_MATCH_LIMIT=m +CONFIG_NETFILTER_XT_MATCH_MAC=m +CONFIG_NETFILTER_XT_MATCH_MARK=m +# CONFIG_NETFILTER_XT_MATCH_OWNER is not set +CONFIG_NETFILTER_XT_MATCH_POLICY=m +CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m +CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m +CONFIG_NETFILTER_XT_MATCH_QUOTA=m +# CONFIG_NETFILTER_XT_MATCH_RATEEST is not set +CONFIG_NETFILTER_XT_MATCH_REALM=m +CONFIG_NETFILTER_XT_MATCH_SCTP=m +CONFIG_NETFILTER_XT_MATCH_STATE=m +CONFIG_NETFILTER_XT_MATCH_STATISTIC=m +CONFIG_NETFILTER_XT_MATCH_STRING=m +CONFIG_NETFILTER_XT_MATCH_TCPMSS=m +# CONFIG_NETFILTER_XT_MATCH_TIME is not set +# CONFIG_NETFILTER_XT_MATCH_U32 is not set +CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m + +# +# IP: Netfilter Configuration +# +CONFIG_NF_CONNTRACK_IPV4=m +CONFIG_NF_CONNTRACK_PROC_COMPAT=y +# CONFIG_IP_NF_QUEUE is not set +CONFIG_IP_NF_IPTABLES=m +# CONFIG_IP_NF_MATCH_RECENT is not set +CONFIG_IP_NF_MATCH_ECN=m +CONFIG_IP_NF_MATCH_AH=m +CONFIG_IP_NF_MATCH_TTL=m +CONFIG_IP_NF_MATCH_ADDRTYPE=m +CONFIG_IP_NF_FILTER=m +CONFIG_IP_NF_TARGET_REJECT=m +CONFIG_IP_NF_TARGET_LOG=m +CONFIG_IP_NF_TARGET_ULOG=m +CONFIG_NF_NAT=m +CONFIG_NF_NAT_NEEDED=y +CONFIG_IP_NF_TARGET_MASQUERADE=m +CONFIG_IP_NF_TARGET_REDIRECT=m +CONFIG_IP_NF_TARGET_NETMAP=m +CONFIG_NF_NAT_SNMP_BASIC=m +CONFIG_NF_NAT_PROTO_GRE=m +CONFIG_NF_NAT_PROTO_SCTP=m +CONFIG_NF_NAT_FTP=m +CONFIG_NF_NAT_IRC=m +CONFIG_NF_NAT_TFTP=m +# CONFIG_NF_NAT_AMANDA is not set +CONFIG_NF_NAT_PPTP=m +CONFIG_NF_NAT_H323=m +CONFIG_NF_NAT_SIP=m +CONFIG_IP_NF_MANGLE=m +CONFIG_IP_NF_TARGET_ECN=m +CONFIG_IP_NF_TARGET_TTL=m +CONFIG_IP_NF_TARGET_CLUSTERIP=m +# CONFIG_IP_NF_RAW is not set +# CONFIG_IP_NF_ARPTABLES is not set + +# +# IPv6: Netfilter Configuration +# +CONFIG_NF_CONNTRACK_IPV6=m +# CONFIG_IP6_NF_QUEUE is not set +CONFIG_IP6_NF_IPTABLES=m +CONFIG_IP6_NF_MATCH_RT=m +CONFIG_IP6_NF_MATCH_OPTS=m +CONFIG_IP6_NF_MATCH_FRAG=m +CONFIG_IP6_NF_MATCH_HL=m +CONFIG_IP6_NF_MATCH_IPV6HEADER=m +CONFIG_IP6_NF_MATCH_AH=m +CONFIG_IP6_NF_MATCH_MH=m +CONFIG_IP6_NF_MATCH_EUI64=m +CONFIG_IP6_NF_FILTER=m +CONFIG_IP6_NF_TARGET_LOG=m +CONFIG_IP6_NF_TARGET_REJECT=m +CONFIG_IP6_NF_MANGLE=m +CONFIG_IP6_NF_TARGET_HL=m +# CONFIG_IP6_NF_RAW is not set +# CONFIG_IP_DCCP is not set +# CONFIG_IP_SCTP is not set +# CONFIG_TIPC is not set +# CONFIG_ATM is not set +# CONFIG_BRIDGE is not set +# CONFIG_VLAN_8021Q is not set +# CONFIG_DECNET is not set +# CONFIG_LLC2 is not set +# CONFIG_IPX is not set +# CONFIG_ATALK is not set +# CONFIG_X25 is not set +# CONFIG_LAPB is not set +# CONFIG_ECONET is not set +# CONFIG_WAN_ROUTER is not set +CONFIG_NET_SCHED=y + +# +# Queueing/Scheduling +# +CONFIG_NET_SCH_CBQ=m +CONFIG_NET_SCH_HTB=m +CONFIG_NET_SCH_HFSC=m +CONFIG_NET_SCH_PRIO=m +CONFIG_NET_SCH_RED=m +CONFIG_NET_SCH_SFQ=m +CONFIG_NET_SCH_TEQL=m +CONFIG_NET_SCH_TBF=m +CONFIG_NET_SCH_GRED=m +CONFIG_NET_SCH_DSMARK=m +CONFIG_NET_SCH_NETEM=m + +# +# Classification +# +CONFIG_NET_CLS=y +CONFIG_NET_CLS_BASIC=m +CONFIG_NET_CLS_TCINDEX=m +CONFIG_NET_CLS_ROUTE4=m +CONFIG_NET_CLS_ROUTE=y +CONFIG_NET_CLS_FW=m +CONFIG_NET_CLS_U32=m +CONFIG_CLS_U32_PERF=y +CONFIG_CLS_U32_MARK=y +CONFIG_NET_CLS_RSVP=m +CONFIG_NET_CLS_RSVP6=m +# CONFIG_NET_CLS_FLOW is not set +# CONFIG_NET_EMATCH is not set +# CONFIG_NET_CLS_ACT is not set +# CONFIG_NET_CLS_IND is not set +CONFIG_NET_SCH_FIFO=y + +# +# Network testing +# +# CONFIG_NET_PKTGEN is not set +# CONFIG_HAMRADIO is not set +# CONFIG_CAN is not set +# CONFIG_IRDA is not set +CONFIG_BT=y +CONFIG_BT_L2CAP=y +CONFIG_BT_SCO=y +CONFIG_BT_RFCOMM=y +CONFIG_BT_RFCOMM_TTY=y +CONFIG_BT_BNEP=y +CONFIG_BT_BNEP_MC_FILTER=y +CONFIG_BT_BNEP_PROTO_FILTER=y +CONFIG_BT_HIDP=y + +# +# Bluetooth device drivers +# +CONFIG_BT_HCIUSB=y +CONFIG_BT_HCIUSB_SCO=y +# CONFIG_BT_HCIBTUSB is not set +# CONFIG_BT_HCIBTSDIO is not set +# CONFIG_BT_HCIUART is not set +# CONFIG_BT_HCIBCM203X is not set +# CONFIG_BT_HCIBPA10X is not set +# CONFIG_BT_HCIBFUSB is not set +# CONFIG_BT_HCIVHCI is not set +# CONFIG_AF_RXRPC is not set +CONFIG_FIB_RULES=y + +# +# Wireless +# +CONFIG_CFG80211=y +CONFIG_NL80211=y +CONFIG_WIRELESS_EXT=y +CONFIG_WIRELESS_EXT_SYSFS=y +# CONFIG_MAC80211 is not set +# CONFIG_IEEE80211 is not set +# CONFIG_RFKILL is not set +# CONFIG_NET_9P is not set + +# +# Device Drivers +# + +# +# Generic Driver Options +# +CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" +CONFIG_STANDALONE=y +CONFIG_PREVENT_FIRMWARE_BUILD=y +# CONFIG_FW_LOADER is not set +# CONFIG_DEBUG_DRIVER is not set +# CONFIG_DEBUG_DEVRES is not set +# CONFIG_SYS_HYPERVISOR is not set +# CONFIG_CONNECTOR is not set +CONFIG_MTD=y +# CONFIG_MTD_DEBUG is not set +# CONFIG_MTD_CONCAT is not set +CONFIG_MTD_PARTITIONS=y +# CONFIG_MTD_REDBOOT_PARTS is not set +CONFIG_MTD_CMDLINE_PARTS=y +# CONFIG_MTD_AFS_PARTS is not set +# CONFIG_MTD_AR7_PARTS is not set + +# +# User Modules And Translation Layers +# +CONFIG_MTD_CHAR=y +CONFIG_MTD_BLKDEVS=y +CONFIG_MTD_BLOCK=y +# CONFIG_FTL is not set +# CONFIG_NFTL is not set +# CONFIG_INFTL is not set +# CONFIG_RFD_FTL is not set +# CONFIG_SSFDC is not set +# CONFIG_MTD_OOPS is not set + +# +# RAM/ROM/Flash chip drivers +# +CONFIG_MTD_CFI=y +# CONFIG_MTD_JEDECPROBE is not set +CONFIG_MTD_GEN_PROBE=y +# CONFIG_MTD_CFI_ADV_OPTIONS is not set +CONFIG_MTD_MAP_BANK_WIDTH_1=y +CONFIG_MTD_MAP_BANK_WIDTH_2=y +CONFIG_MTD_MAP_BANK_WIDTH_4=y +# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set +# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set +# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set +CONFIG_MTD_CFI_I1=y +CONFIG_MTD_CFI_I2=y +# CONFIG_MTD_CFI_I4 is not set +# CONFIG_MTD_CFI_I8 is not set +CONFIG_MTD_CFI_INTELEXT=y +# CONFIG_MTD_CFI_AMDSTD is not set +# CONFIG_MTD_CFI_STAA is not set +CONFIG_MTD_CFI_UTIL=y +# CONFIG_MTD_RAM is not set +# CONFIG_MTD_ROM is not set +CONFIG_MTD_ABSENT=y + +# +# Mapping drivers for chip access +# +# CONFIG_MTD_COMPLEX_MAPPINGS is not set +CONFIG_MTD_PHYSMAP=y +CONFIG_MTD_PHYSMAP_START=0x8000000 +CONFIG_MTD_PHYSMAP_LEN=0 +CONFIG_MTD_PHYSMAP_BANKWIDTH=2 +# CONFIG_MTD_ARM_INTEGRATOR is not set +# CONFIG_MTD_PLATRAM is not set + +# +# Self-contained MTD device drivers +# +# CONFIG_MTD_DATAFLASH is not set +# CONFIG_MTD_M25P80 is not set +# CONFIG_MTD_SLRAM is not set +# CONFIG_MTD_PHRAM is not set +# CONFIG_MTD_MTDRAM is not set +# CONFIG_MTD_BLOCK2MTD is not set + +# +# Disk-On-Chip Device Drivers +# +# CONFIG_MTD_DOC2000 is not set +# CONFIG_MTD_DOC2001 is not set +# CONFIG_MTD_DOC2001PLUS is not set +CONFIG_MTD_NAND=y +CONFIG_MTD_NAND_VERIFY_WRITE=y +# CONFIG_MTD_NAND_ECC_SMC is not set +# CONFIG_MTD_NAND_MUSEUM_IDS is not set +CONFIG_MTD_NAND_IDS=y +CONFIG_MTD_NAND_S3C2410=y +# CONFIG_MTD_NAND_S3C2410_DEBUG is not set +CONFIG_MTD_NAND_S3C2410_HWECC=y +# CONFIG_MTD_NAND_S3C2410_CLKSTOP is not set +# CONFIG_MTD_NAND_DISKONCHIP is not set +# CONFIG_MTD_NAND_NANDSIM is not set +# CONFIG_MTD_NAND_PLATFORM is not set +# CONFIG_MTD_ALAUDA is not set +# CONFIG_MTD_ONENAND is not set + +# +# UBI - Unsorted block images +# +# CONFIG_MTD_UBI is not set +# CONFIG_PARPORT is not set +CONFIG_PNP=y +CONFIG_PNP_DEBUG=y + +# +# Protocols +# +# CONFIG_PNPACPI is not set +CONFIG_BLK_DEV=y +# CONFIG_BLK_DEV_COW_COMMON is not set +CONFIG_BLK_DEV_LOOP=m +# CONFIG_BLK_DEV_CRYPTOLOOP is not set +# CONFIG_BLK_DEV_NBD is not set +CONFIG_BLK_DEV_UB=m +CONFIG_BLK_DEV_RAM=y +CONFIG_BLK_DEV_RAM_COUNT=16 +CONFIG_BLK_DEV_RAM_SIZE=4096 +# CONFIG_BLK_DEV_XIP is not set +# CONFIG_CDROM_PKTCDVD is not set +# CONFIG_ATA_OVER_ETH is not set +CONFIG_MISC_DEVICES=y +# CONFIG_EEPROM_93CX6 is not set +CONFIG_LOW_MEMORY_KILLER=y +# CONFIG_ENCLOSURE_SERVICES is not set +CONFIG_HAVE_IDE=y +# CONFIG_IDE is not set + +# +# SCSI device support +# +# CONFIG_RAID_ATTRS is not set +CONFIG_SCSI=m +CONFIG_SCSI_DMA=y +# CONFIG_SCSI_TGT is not set +# CONFIG_SCSI_NETLINK is not set +CONFIG_SCSI_PROC_FS=y + +# +# SCSI support type (disk, tape, CD-ROM) +# +CONFIG_BLK_DEV_SD=m +# CONFIG_CHR_DEV_ST is not set +# CONFIG_CHR_DEV_OSST is not set +CONFIG_BLK_DEV_SR=m +# CONFIG_BLK_DEV_SR_VENDOR is not set +CONFIG_CHR_DEV_SG=m +# CONFIG_CHR_DEV_SCH is not set + +# +# Some SCSI devices (e.g. CD jukebox) support multiple LUNs +# +# CONFIG_SCSI_MULTI_LUN is not set +# CONFIG_SCSI_CONSTANTS is not set +# CONFIG_SCSI_LOGGING is not set +CONFIG_SCSI_SCAN_ASYNC=y +CONFIG_SCSI_WAIT_SCAN=m + +# +# SCSI Transports +# +# CONFIG_SCSI_SPI_ATTRS is not set +# CONFIG_SCSI_FC_ATTRS is not set +# CONFIG_SCSI_ISCSI_ATTRS is not set +# CONFIG_SCSI_SAS_LIBSAS is not set +# CONFIG_SCSI_SRP_ATTRS is not set +CONFIG_SCSI_LOWLEVEL=y +# CONFIG_ISCSI_TCP is not set +# CONFIG_SCSI_DEBUG is not set +# CONFIG_SCSI_DH is not set +# CONFIG_ATA is not set +# CONFIG_MD is not set +CONFIG_NETDEVICES=y +# CONFIG_DUMMY is not set +# CONFIG_BONDING is not set +# CONFIG_MACVLAN is not set +# CONFIG_EQUALIZER is not set +CONFIG_TUN=m +# CONFIG_VETH is not set +# CONFIG_NET_SB1000 is not set +# CONFIG_PHYLIB is not set +CONFIG_NET_ETHERNET=y +CONFIG_MII=y +# CONFIG_AX88796 is not set +# CONFIG_SMC91X is not set +# CONFIG_DM9000 is not set +# CONFIG_ENC28J60 is not set +# CONFIG_IBM_NEW_EMAC_ZMII is not set +# CONFIG_IBM_NEW_EMAC_RGMII is not set +# CONFIG_IBM_NEW_EMAC_TAH is not set +# CONFIG_IBM_NEW_EMAC_EMAC4 is not set +# CONFIG_B44 is not set +# CONFIG_NETDEV_1000 is not set +# CONFIG_NETDEV_10000 is not set + +# +# Wireless LAN +# +# CONFIG_WLAN_PRE80211 is not set +# CONFIG_WLAN_80211 is not set +# CONFIG_IWLWIFI_LEDS is not set + +# +# USB Network Adapters +# +CONFIG_USB_CATC=m +CONFIG_USB_KAWETH=m +CONFIG_USB_PEGASUS=m +CONFIG_USB_RTL8150=m +CONFIG_USB_USBNET=y +CONFIG_USB_NET_AX8817X=m +CONFIG_USB_NET_CDCETHER=m +CONFIG_USB_NET_DM9601=m +CONFIG_USB_NET_GL620A=m +CONFIG_USB_NET_NET1080=m +CONFIG_USB_NET_PLUSB=m +CONFIG_USB_NET_MCS7830=m +CONFIG_USB_NET_RNDIS_HOST=m +CONFIG_USB_NET_CDC_SUBSET=m +CONFIG_USB_ALI_M5632=y +CONFIG_USB_AN2720=y +CONFIG_USB_BELKIN=y +CONFIG_USB_ARMLINUX=y +CONFIG_USB_EPSON2888=y +CONFIG_USB_KC2190=y +CONFIG_USB_NET_ZAURUS=m +# CONFIG_WAN is not set +CONFIG_PPP=m +CONFIG_PPP_MULTILINK=y +CONFIG_PPP_FILTER=y +CONFIG_PPP_ASYNC=m +CONFIG_PPP_SYNC_TTY=m +CONFIG_PPP_DEFLATE=m +CONFIG_PPP_BSDCOMP=m +CONFIG_PPP_MPPE=m +# CONFIG_PPPOE is not set +# CONFIG_PPPOL2TP is not set +# CONFIG_SLIP is not set +CONFIG_SLHC=m +# CONFIG_NETCONSOLE is not set +# CONFIG_NETPOLL is not set +# CONFIG_NET_POLL_CONTROLLER is not set +# CONFIG_ISDN is not set + +# +# Input device support +# +CONFIG_INPUT=y +# CONFIG_INPUT_FF_MEMLESS is not set +# CONFIG_INPUT_POLLDEV is not set + +# +# Userland interfaces +# +CONFIG_INPUT_MOUSEDEV=y +# CONFIG_INPUT_MOUSEDEV_PSAUX is not set +CONFIG_INPUT_MOUSEDEV_SCREEN_X=480 +CONFIG_INPUT_MOUSEDEV_SCREEN_Y=640 +# CONFIG_INPUT_JOYDEV is not set +CONFIG_INPUT_EVDEV=y +# CONFIG_INPUT_EVBUG is not set +# CONFIG_INPUT_APMPOWER is not set + +# +# Input Device Drivers +# +CONFIG_INPUT_KEYBOARD=y +# CONFIG_KEYBOARD_ATKBD is not set +# CONFIG_KEYBOARD_SUNKBD is not set +# CONFIG_KEYBOARD_LKKBD is not set +# CONFIG_KEYBOARD_XTKBD is not set +# CONFIG_KEYBOARD_NEWTON is not set +CONFIG_KEYBOARD_STOWAWAY=m +CONFIG_KEYBOARD_GPIO=m +CONFIG_KEYBOARD_NEO1973=y +CONFIG_INPUT_MOUSE=y +# CONFIG_MOUSE_PS2 is not set +# CONFIG_MOUSE_SERIAL is not set +# CONFIG_MOUSE_APPLETOUCH is not set +# CONFIG_MOUSE_BCM5974 is not set +# CONFIG_MOUSE_VSXXXAA is not set +# CONFIG_MOUSE_GPIO is not set +# CONFIG_INPUT_JOYSTICK is not set +# CONFIG_INPUT_TABLET is not set +CONFIG_INPUT_TOUCHSCREEN=y +CONFIG_TOUCHSCREEN_FILTER=y +CONFIG_TOUCHSCREEN_FILTER_MEDIAN=y +CONFIG_TOUCHSCREEN_FILTER_MEAN=y +# CONFIG_TOUCHSCREEN_ADS7846 is not set +# CONFIG_TOUCHSCREEN_FUJITSU is not set +CONFIG_TOUCHSCREEN_S3C2410=y +# CONFIG_TOUCHSCREEN_S3C2410_DEBUG is not set +# CONFIG_TOUCHSCREEN_GUNZE is not set +# CONFIG_TOUCHSCREEN_ELO is not set +# CONFIG_TOUCHSCREEN_MTOUCH is not set +# CONFIG_TOUCHSCREEN_INEXIO is not set +# CONFIG_TOUCHSCREEN_MK712 is not set +# CONFIG_TOUCHSCREEN_PENMOUNT is not set +# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set +# CONFIG_TOUCHSCREEN_TOUCHWIN is not set +# CONFIG_TOUCHSCREEN_UCB1400 is not set +# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set +# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set +CONFIG_INPUT_MISC=y +# CONFIG_INPUT_ATI_REMOTE is not set +# CONFIG_INPUT_ATI_REMOTE2 is not set +# CONFIG_INPUT_KEYSPAN_REMOTE is not set +# CONFIG_INPUT_POWERMATE is not set +# CONFIG_INPUT_YEALINK is not set +# CONFIG_INPUT_UINPUT is not set +CONFIG_INPUT_LIS302DL=y + +# +# Hardware I/O ports +# +CONFIG_SERIO=y +# CONFIG_SERIO_SERPORT is not set +# CONFIG_SERIO_LIBPS2 is not set +# CONFIG_SERIO_RAW is not set +# CONFIG_GAMEPORT is not set + +# +# Character devices +# +CONFIG_VT=y +CONFIG_CONSOLE_TRANSLATIONS=y +CONFIG_VT_CONSOLE=y +CONFIG_NR_TTY_DEVICES=4 +CONFIG_HW_CONSOLE=y +CONFIG_VT_HW_CONSOLE_BINDING=y +CONFIG_DEVKMEM=y +# CONFIG_SERIAL_NONSTANDARD is not set + +# +# Serial drivers +# +# CONFIG_SERIAL_8250 is not set + +# +# Non-8250 serial port support +# +CONFIG_SERIAL_SAMSUNG=y +# CONFIG_SERIAL_SAMSUNG_DEBUG is not set +CONFIG_SERIAL_SAMSUNG_CONSOLE=y +CONFIG_SERIAL_S3C2410=y +CONFIG_SERIAL_S3C2440=y +CONFIG_SERIAL_CORE=y +CONFIG_SERIAL_CORE_CONSOLE=y +CONFIG_UNIX98_PTYS=y +# CONFIG_LEGACY_PTYS is not set +# CONFIG_IPMI_HANDLER is not set +# CONFIG_HW_RANDOM is not set +# CONFIG_NVRAM is not set +# CONFIG_R3964 is not set +# CONFIG_RAW_DRIVER is not set +# CONFIG_TCG_TPM is not set +CONFIG_I2C=y +CONFIG_I2C_BOARDINFO=y +CONFIG_I2C_CHARDEV=y +CONFIG_I2C_HELPER_AUTO=y + +# +# I2C Hardware Bus support +# + +# +# I2C system bus drivers (mostly embedded / system-on-chip) +# +# CONFIG_I2C_GPIO is not set +# CONFIG_I2C_OCORES is not set +CONFIG_I2C_S3C2410=y +# CONFIG_I2C_SIMTEC is not set + +# +# External I2C/SMBus adapter drivers +# +# CONFIG_I2C_PARPORT_LIGHT is not set +# CONFIG_I2C_TAOS_EVM is not set +# CONFIG_I2C_TINY_USB is not set + +# +# Other I2C/SMBus bus drivers +# +# CONFIG_I2C_PCA_PLATFORM is not set +# CONFIG_I2C_STUB is not set + +# +# Miscellaneous I2C Chip support +# +# CONFIG_DS1682 is not set +# CONFIG_AT24 is not set +# CONFIG_SENSORS_EEPROM is not set +CONFIG_SENSORS_PCF50606=y +CONFIG_SENSORS_PCF50633=y +# CONFIG_SENSORS_PCF8574 is not set +# CONFIG_PCF8575 is not set +# CONFIG_SENSORS_PCA9539 is not set +# CONFIG_SENSORS_PCF8591 is not set +# CONFIG_TPS65010 is not set +# CONFIG_SENSORS_MAX6875 is not set +# CONFIG_SENSORS_TSL2550 is not set +# CONFIG_SENSORS_TSL256X is not set +# CONFIG_PCA9632 is not set +# CONFIG_I2C_DEBUG_CORE is not set +# CONFIG_I2C_DEBUG_ALGO is not set +# CONFIG_I2C_DEBUG_BUS is not set +# CONFIG_I2C_DEBUG_CHIP is not set +CONFIG_SPI=y +# CONFIG_SPI_DEBUG is not set +CONFIG_SPI_MASTER=y + +# +# SPI Master Controller Drivers +# +CONFIG_SPI_BITBANG=y +CONFIG_SPI_S3C24XX=y +CONFIG_SPI_S3C24XX_GPIO=y + +# +# SPI Protocol Masters +# +# CONFIG_SPI_AT25 is not set +# CONFIG_SPI_SPIDEV is not set +# CONFIG_SPI_TLE62X0 is not set +CONFIG_ARCH_REQUIRE_GPIOLIB=y +CONFIG_GPIOLIB=y +# CONFIG_DEBUG_GPIO is not set +# CONFIG_GPIO_SYSFS is not set + +# +# I2C GPIO expanders: +# +# CONFIG_GPIO_MAX732X is not set +# CONFIG_GPIO_PCA953X is not set +# CONFIG_GPIO_PCF857X is not set + +# +# PCI GPIO expanders: +# + +# +# SPI GPIO expanders: +# +# CONFIG_GPIO_MAX7301 is not set +# CONFIG_GPIO_MCP23S08 is not set +# CONFIG_W1 is not set +CONFIG_POWER_SUPPLY=y +# CONFIG_POWER_SUPPLY_DEBUG is not set +# CONFIG_PDA_POWER is not set +# CONFIG_APM_POWER is not set +# CONFIG_BATTERY_DS2760 is not set +CONFIG_BATTERY_BQ27000_HDQ=y +CONFIG_GTA02_HDQ=y +# CONFIG_HWMON is not set +# CONFIG_WATCHDOG is not set + +# +# Sonics Silicon Backplane +# +CONFIG_SSB_POSSIBLE=y +# CONFIG_SSB is not set + +# +# Multifunction device drivers +# +# CONFIG_MFD_CORE is not set +# CONFIG_MFD_SM501 is not set +# CONFIG_MFD_ASIC3 is not set +# CONFIG_HTC_EGPIO is not set +# CONFIG_HTC_PASIC3 is not set +# CONFIG_MFD_TMIO is not set +# CONFIG_MFD_T7L66XB is not set +# CONFIG_MFD_TC6387XB is not set +# CONFIG_MFD_TC6393XB is not set +CONFIG_MFD_GLAMO=y +CONFIG_MFD_GLAMO_FB=y +CONFIG_MFD_GLAMO_SPI_GPIO=y +CONFIG_MFD_GLAMO_SPI_FB=y +CONFIG_MFD_GLAMO_MCI=y + +# +# Multimedia devices +# + +# +# Multimedia core support +# +# CONFIG_VIDEO_DEV is not set +# CONFIG_DVB_CORE is not set +# CONFIG_VIDEO_MEDIA is not set + +# +# Multimedia drivers +# +CONFIG_DAB=y +# CONFIG_USB_DABUSB is not set + +# +# Graphics support +# +# CONFIG_VGASTATE is not set +CONFIG_VIDEO_OUTPUT_CONTROL=y +CONFIG_FB=y +# CONFIG_FIRMWARE_EDID is not set +# CONFIG_FB_DDC is not set +CONFIG_FB_CFB_FILLRECT=y +CONFIG_FB_CFB_COPYAREA=y +CONFIG_FB_CFB_IMAGEBLIT=y +# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set +# CONFIG_FB_SYS_FILLRECT is not set +# CONFIG_FB_SYS_COPYAREA is not set +# CONFIG_FB_SYS_IMAGEBLIT is not set +# CONFIG_FB_FOREIGN_ENDIAN is not set +# CONFIG_FB_SYS_FOPS is not set +# CONFIG_FB_SVGALIB is not set +# CONFIG_FB_MACMODES is not set +# CONFIG_FB_BACKLIGHT is not set +# CONFIG_FB_MODE_HELPERS is not set +# CONFIG_FB_TILEBLITTING is not set + +# +# Frame buffer hardware drivers +# +# CONFIG_FB_S1D13XXX is not set +CONFIG_FB_S3C2410=y +# CONFIG_FB_S3C2410_DEBUG is not set +# CONFIG_FB_VIRTUAL is not set +CONFIG_BACKLIGHT_LCD_SUPPORT=y +CONFIG_LCD_CLASS_DEVICE=y +# CONFIG_LCD_LTV350QV is not set +# CONFIG_LCD_ILI9320 is not set +# CONFIG_LCD_VGG2432A4 is not set +# CONFIG_LCD_PLATFORM is not set +CONFIG_BACKLIGHT_CLASS_DEVICE=y +# CONFIG_BACKLIGHT_CORGI is not set +CONFIG_BACKLIGHT_GTA01=y +# CONFIG_BACKLIGHT_PWM is not set + +# +# Display device support +# +# CONFIG_DISPLAY_SUPPORT is not set +CONFIG_DISPLAY_JBT6K74=y + +# +# Console display driver support +# +# CONFIG_VGA_CONSOLE is not set +CONFIG_DUMMY_CONSOLE=y +# CONFIG_FRAMEBUFFER_CONSOLE is not set +CONFIG_LOGO=y +# CONFIG_LOGO_LINUX_MONO is not set +# CONFIG_LOGO_LINUX_VGA16 is not set +# CONFIG_LOGO_LINUX_CLUT224 is not set +CONFIG_LOGO_OPENMOKO_CLUT224=y +CONFIG_SOUND=y +CONFIG_SND=y +CONFIG_SND_TIMER=y +CONFIG_SND_PCM=y +# CONFIG_SND_SEQUENCER is not set +# CONFIG_SND_MIXER_OSS is not set +# CONFIG_SND_PCM_OSS is not set +# CONFIG_SND_DYNAMIC_MINORS is not set +# CONFIG_SND_SUPPORT_OLD_API is not set +CONFIG_SND_VERBOSE_PROCFS=y +# CONFIG_SND_VERBOSE_PRINTK is not set +# CONFIG_SND_DEBUG is not set +CONFIG_SND_DRIVERS=y +# CONFIG_SND_DUMMY is not set +# CONFIG_SND_MTPAV is not set +# CONFIG_SND_SERIAL_U16550 is not set +# CONFIG_SND_MPU401 is not set +CONFIG_SND_ARM=y +CONFIG_SND_SPI=y +CONFIG_SND_USB=y +# CONFIG_SND_USB_AUDIO is not set +# CONFIG_SND_USB_CAIAQ is not set +CONFIG_SND_SOC=y +CONFIG_SND_S3C24XX_SOC=y +CONFIG_SND_S3C24XX_SOC_I2S=y +# CONFIG_SND_S3C24XX_SOC_NEO1973_WM8753 is not set +CONFIG_SND_S3C24XX_SOC_NEO1973_GTA02_WM8753=y +# CONFIG_SND_S3C24XX_SOC_LN2440SBC_ALC650 is not set +CONFIG_SND_SOC_WM8753=y +# CONFIG_SOUND_PRIME is not set +CONFIG_HID_SUPPORT=y +CONFIG_HID=y +# CONFIG_HID_DEBUG is not set +# CONFIG_HIDRAW is not set + +# +# USB Input Devices +# +CONFIG_USB_HID=m +# CONFIG_USB_HIDINPUT_POWERBOOK is not set +# CONFIG_HID_FF is not set +# CONFIG_USB_HIDDEV is not set + +# +# USB HID Boot Protocol drivers +# +# CONFIG_USB_KBD is not set +# CONFIG_USB_MOUSE is not set +CONFIG_USB_SUPPORT=y +CONFIG_USB_ARCH_HAS_HCD=y +CONFIG_USB_ARCH_HAS_OHCI=y +# CONFIG_USB_ARCH_HAS_EHCI is not set +CONFIG_USB=y +# CONFIG_USB_DEBUG is not set +# CONFIG_USB_ANNOUNCE_NEW_DEVICES is not set + +# +# Miscellaneous USB options +# +CONFIG_USB_DEVICEFS=y +CONFIG_USB_DEVICE_CLASS=y +# CONFIG_USB_DYNAMIC_MINORS is not set +CONFIG_USB_SUSPEND=y +# CONFIG_USB_OTG is not set +# CONFIG_USB_OTG_WHITELIST is not set +# CONFIG_USB_OTG_BLACKLIST_HUB is not set +# CONFIG_USB_MON is not set + +# +# USB Host Controller Drivers +# +# CONFIG_USB_C67X00_HCD is not set +# CONFIG_USB_ISP116X_HCD is not set +# CONFIG_USB_ISP1760_HCD is not set +CONFIG_USB_OHCI_HCD=y +# CONFIG_USB_OHCI_BIG_ENDIAN_DESC is not set +# CONFIG_USB_OHCI_BIG_ENDIAN_MMIO is not set +CONFIG_USB_OHCI_LITTLE_ENDIAN=y +# CONFIG_USB_SL811_HCD is not set +# CONFIG_USB_R8A66597_HCD is not set +# CONFIG_USB_MUSB_HDRC is not set +# CONFIG_USB_GADGET_MUSB_HDRC is not set + +# +# USB Device Class drivers +# +# CONFIG_USB_ACM is not set +# CONFIG_USB_PRINTER is not set +# CONFIG_USB_WDM is not set + +# +# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' +# + +# +# may also be needed; see USB_STORAGE Help for more information +# +# CONFIG_USB_STORAGE is not set +# CONFIG_USB_LIBUSUAL is not set + +# +# USB Imaging devices +# +# CONFIG_USB_MDC800 is not set +# CONFIG_USB_MICROTEK is not set + +# +# USB port drivers +# +# CONFIG_USB_SERIAL is not set + +# +# USB Miscellaneous drivers +# +# CONFIG_USB_EMI62 is not set +# CONFIG_USB_EMI26 is not set +# CONFIG_USB_ADUTUX is not set +# CONFIG_USB_RIO500 is not set +# CONFIG_USB_LEGOTOWER is not set +# CONFIG_USB_LCD is not set +# CONFIG_USB_BERRY_CHARGE is not set +# CONFIG_USB_LED is not set +# CONFIG_USB_CYPRESS_CY7C63 is not set +# CONFIG_USB_CYTHERM is not set +# CONFIG_USB_PHIDGET is not set +# CONFIG_USB_IDMOUSE is not set +# CONFIG_USB_FTDI_ELAN is not set +# CONFIG_USB_APPLEDISPLAY is not set +# CONFIG_USB_LD is not set +# CONFIG_USB_TRANCEVIBRATOR is not set +# CONFIG_USB_IOWARRIOR is not set +# CONFIG_USB_TEST is not set +# CONFIG_USB_ISIGHTFW is not set +CONFIG_USB_GADGET=y +# CONFIG_USB_GADGET_DEBUG is not set +# CONFIG_USB_GADGET_DEBUG_FILES is not set +CONFIG_USB_GADGET_SELECTED=y +# CONFIG_USB_GADGET_AMD5536UDC is not set +# CONFIG_USB_GADGET_ATMEL_USBA is not set +# CONFIG_USB_GADGET_FSL_USB2 is not set +# CONFIG_USB_GADGET_NET2280 is not set +# CONFIG_USB_GADGET_PXA25X is not set +# CONFIG_USB_GADGET_M66592 is not set +# CONFIG_USB_GADGET_PXA27X is not set +# CONFIG_USB_GADGET_GOKU is not set +# CONFIG_USB_GADGET_LH7A40X is not set +# CONFIG_USB_GADGET_OMAP is not set +CONFIG_USB_GADGET_S3C2410=y +CONFIG_USB_S3C2410=y +# CONFIG_USB_S3C2410_DEBUG is not set +# CONFIG_USB_GADGET_AT91 is not set +# CONFIG_USB_GADGET_DUMMY_HCD is not set +# CONFIG_USB_GADGET_DUALSPEED is not set +# CONFIG_USB_ZERO is not set +CONFIG_USB_ETH=y +# CONFIG_USB_ETH_RNDIS is not set +# CONFIG_USB_GADGETFS is not set +# CONFIG_USB_FILE_STORAGE is not set +# CONFIG_USB_G_SERIAL is not set +# CONFIG_USB_MIDI_GADGET is not set +# CONFIG_USB_G_PRINTER is not set +# CONFIG_USB_CDC_COMPOSITE is not set + +# +# SDIO support +# +CONFIG_SDIO=y +CONFIG_SDIO_S3C24XX=y +CONFIG_SDIO_S3C24XX_DMA=y +CONFIG_SDIO_AR6000_WLAN=y +CONFIG_MMC=y +# CONFIG_MMC_DEBUG is not set +CONFIG_MMC_UNSAFE_RESUME=y + +# +# MMC/SD Card Drivers +# +CONFIG_MMC_BLOCK=y +CONFIG_MMC_BLOCK_BOUNCE=y +# CONFIG_SDIO_UART is not set +# CONFIG_MMC_TEST is not set + +# +# MMC/SD Host Controller Drivers +# +# CONFIG_MMC_SDHCI is not set +# CONFIG_MMC_SPI is not set +# CONFIG_MMC_S3C is not set +CONFIG_NEW_LEDS=y +CONFIG_LEDS_CLASS=y + +# +# LED drivers +# +# CONFIG_LEDS_S3C24XX is not set +# CONFIG_LEDS_PCA9532 is not set +# CONFIG_LEDS_GPIO is not set +# CONFIG_LEDS_PCA955X is not set +CONFIG_LEDS_NEO1973_VIBRATOR=y +CONFIG_LEDS_NEO1973_GTA02=y + +# +# LED Triggers +# +CONFIG_LEDS_TRIGGERS=y +CONFIG_LEDS_TRIGGER_TIMER=y +# CONFIG_LEDS_TRIGGER_HEARTBEAT is not set +# CONFIG_LEDS_TRIGGER_DEFAULT_ON is not set +CONFIG_RTC_LIB=y +CONFIG_RTC_CLASS=y +CONFIG_RTC_HCTOSYS=y +CONFIG_RTC_HCTOSYS_DEVICE="rtc0" +CONFIG_RTC_DEBUG=y + +# +# RTC interfaces +# +CONFIG_RTC_INTF_SYSFS=y +CONFIG_RTC_INTF_PROC=y +CONFIG_RTC_INTF_DEV=y +# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set +# CONFIG_RTC_DRV_TEST is not set + +# +# I2C RTC drivers +# +# CONFIG_RTC_DRV_DS1307 is not set +# CONFIG_RTC_DRV_DS1374 is not set +# CONFIG_RTC_DRV_DS1672 is not set +# CONFIG_RTC_DRV_MAX6900 is not set +# CONFIG_RTC_DRV_RS5C372 is not set +# CONFIG_RTC_DRV_ISL1208 is not set +# CONFIG_RTC_DRV_X1205 is not set +# CONFIG_RTC_DRV_PCF8563 is not set +# CONFIG_RTC_DRV_PCF8583 is not set +# CONFIG_RTC_DRV_M41T80 is not set +# CONFIG_RTC_DRV_S35390A is not set +# CONFIG_RTC_DRV_FM3130 is not set + +# +# SPI RTC drivers +# +# CONFIG_RTC_DRV_M41T94 is not set +# CONFIG_RTC_DRV_DS1305 is not set +# CONFIG_RTC_DRV_MAX6902 is not set +# CONFIG_RTC_DRV_R9701 is not set +# CONFIG_RTC_DRV_RS5C348 is not set + +# +# Platform RTC drivers +# +# CONFIG_RTC_DRV_CMOS is not set +# CONFIG_RTC_DRV_DS1511 is not set +# CONFIG_RTC_DRV_DS1553 is not set +# CONFIG_RTC_DRV_DS1742 is not set +# CONFIG_RTC_DRV_STK17TA8 is not set +# CONFIG_RTC_DRV_M48T86 is not set +# CONFIG_RTC_DRV_M48T59 is not set +# CONFIG_RTC_DRV_V3020 is not set + +# +# on-CPU RTC drivers +# +CONFIG_RTC_DRV_S3C=m +# CONFIG_DMADEVICES is not set + +# +# Android +# +CONFIG_ANDROID_BINDER_IPC=y +CONFIG_ANDROID_POWER=y +CONFIG_ANDROID_POWER_STAT=y +CONFIG_ANDROID_POWER_ALARM=y +CONFIG_ANDROID_LOGGER=y +# CONFIG_ANDROID_RAM_CONSOLE is not set +# CONFIG_ANDROID_TIMED_GPIO is not set +# CONFIG_ANDROID_PARANOID_NETWORK is not set + +# +# Voltage and Current regulators +# +CONFIG_REGULATOR=y +# CONFIG_REGULATOR_DEBUG is not set +# CONFIG_REGULATOR_FIXED_VOLTAGE is not set +# CONFIG_REGULATOR_VIRTUAL_CONSUMER is not set +# CONFIG_REGULATOR_BQ24022 is not set +CONFIG_REGULATOR_PCF50633=y +# CONFIG_UIO is not set + +# +# File systems +# +CONFIG_EXT2_FS=m +# CONFIG_EXT2_FS_XATTR is not set +# CONFIG_EXT2_FS_XIP is not set +CONFIG_EXT3_FS=y +# CONFIG_EXT3_FS_XATTR is not set +# CONFIG_EXT4DEV_FS is not set +CONFIG_JBD=y +# CONFIG_REISERFS_FS is not set +# CONFIG_JFS_FS is not set +# CONFIG_FS_POSIX_ACL is not set +# CONFIG_XFS_FS is not set +# CONFIG_OCFS2_FS is not set +CONFIG_DNOTIFY=y +CONFIG_INOTIFY=y +CONFIG_INOTIFY_USER=y +# CONFIG_QUOTA is not set +# CONFIG_AUTOFS_FS is not set +CONFIG_AUTOFS4_FS=m +CONFIG_FUSE_FS=m + +# +# CD-ROM/DVD Filesystems +# +CONFIG_ISO9660_FS=m +CONFIG_JOLIET=y +# CONFIG_ZISOFS is not set +# CONFIG_UDF_FS is not set + +# +# DOS/FAT/NT Filesystems +# +CONFIG_FAT_FS=y +CONFIG_MSDOS_FS=y +CONFIG_VFAT_FS=y +CONFIG_FAT_DEFAULT_CODEPAGE=437 +CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1" +# CONFIG_NTFS_FS is not set + +# +# Pseudo filesystems +# +CONFIG_PROC_FS=y +CONFIG_PROC_SYSCTL=y +CONFIG_SYSFS=y +CONFIG_TMPFS=y +# CONFIG_TMPFS_POSIX_ACL is not set +# CONFIG_HUGETLB_PAGE is not set +CONFIG_CONFIGFS_FS=m + +# +# Miscellaneous filesystems +# +# CONFIG_ADFS_FS is not set +# CONFIG_AFFS_FS is not set +# CONFIG_HFS_FS is not set +# CONFIG_HFSPLUS_FS is not set +# CONFIG_BEFS_FS is not set +# CONFIG_BFS_FS is not set +# CONFIG_EFS_FS is not set +CONFIG_JFFS2_FS=y +CONFIG_JFFS2_FS_DEBUG=0 +CONFIG_JFFS2_FS_WRITEBUFFER=y +# CONFIG_JFFS2_FS_WBUF_VERIFY is not set +CONFIG_JFFS2_SUMMARY=y +# CONFIG_JFFS2_FS_XATTR is not set +# CONFIG_JFFS2_COMPRESSION_OPTIONS is not set +CONFIG_JFFS2_ZLIB=y +# CONFIG_JFFS2_LZO is not set +CONFIG_JFFS2_RTIME=y +# CONFIG_JFFS2_RUBIN is not set +CONFIG_CRAMFS=y +# CONFIG_VXFS_FS is not set +# CONFIG_MINIX_FS is not set +# CONFIG_OMFS_FS is not set +# CONFIG_HPFS_FS is not set +# CONFIG_QNX4FS_FS is not set +CONFIG_ROMFS_FS=y +# CONFIG_SYSV_FS is not set +# CONFIG_UFS_FS is not set +CONFIG_NETWORK_FILESYSTEMS=y +CONFIG_NFS_FS=y +CONFIG_NFS_V3=y +# CONFIG_NFS_V3_ACL is not set +CONFIG_NFS_V4=y +CONFIG_ROOT_NFS=y +# CONFIG_NFSD is not set +CONFIG_LOCKD=y +CONFIG_LOCKD_V4=y +CONFIG_NFS_COMMON=y +CONFIG_SUNRPC=y +CONFIG_SUNRPC_GSS=y +CONFIG_RPCSEC_GSS_KRB5=y +# CONFIG_RPCSEC_GSS_SPKM3 is not set +# CONFIG_SMB_FS is not set +# CONFIG_CIFS is not set +# CONFIG_NCP_FS is not set +# CONFIG_CODA_FS is not set +# CONFIG_AFS_FS is not set + +# +# Partition Types +# +# CONFIG_PARTITION_ADVANCED is not set +CONFIG_MSDOS_PARTITION=y +CONFIG_NLS=y +CONFIG_NLS_DEFAULT="iso8859-1" +CONFIG_NLS_CODEPAGE_437=y +# CONFIG_NLS_CODEPAGE_737 is not set +# CONFIG_NLS_CODEPAGE_775 is not set +CONFIG_NLS_CODEPAGE_850=m +# CONFIG_NLS_CODEPAGE_852 is not set +# CONFIG_NLS_CODEPAGE_855 is not set +# CONFIG_NLS_CODEPAGE_857 is not set +# CONFIG_NLS_CODEPAGE_860 is not set +# CONFIG_NLS_CODEPAGE_861 is not set +# CONFIG_NLS_CODEPAGE_862 is not set +# CONFIG_NLS_CODEPAGE_863 is not set +# CONFIG_NLS_CODEPAGE_864 is not set +# CONFIG_NLS_CODEPAGE_865 is not set +# CONFIG_NLS_CODEPAGE_866 is not set +# CONFIG_NLS_CODEPAGE_869 is not set +CONFIG_NLS_CODEPAGE_936=m +CONFIG_NLS_CODEPAGE_950=m +# CONFIG_NLS_CODEPAGE_932 is not set +# CONFIG_NLS_CODEPAGE_949 is not set +# CONFIG_NLS_CODEPAGE_874 is not set +# CONFIG_NLS_ISO8859_8 is not set +# CONFIG_NLS_CODEPAGE_1250 is not set +# CONFIG_NLS_CODEPAGE_1251 is not set +# CONFIG_NLS_ASCII is not set +CONFIG_NLS_ISO8859_1=y +# CONFIG_NLS_ISO8859_2 is not set +# CONFIG_NLS_ISO8859_3 is not set +# CONFIG_NLS_ISO8859_4 is not set +# CONFIG_NLS_ISO8859_5 is not set +# CONFIG_NLS_ISO8859_6 is not set +# CONFIG_NLS_ISO8859_7 is not set +# CONFIG_NLS_ISO8859_9 is not set +# CONFIG_NLS_ISO8859_13 is not set +# CONFIG_NLS_ISO8859_14 is not set +# CONFIG_NLS_ISO8859_15 is not set +# CONFIG_NLS_KOI8_R is not set +# CONFIG_NLS_KOI8_U is not set +CONFIG_NLS_UTF8=y +# CONFIG_DLM is not set + +# +# Kernel hacking +# +# CONFIG_PRINTK_TIME is not set +CONFIG_ENABLE_WARN_DEPRECATED=y +CONFIG_ENABLE_MUST_CHECK=y +CONFIG_FRAME_WARN=1024 +CONFIG_MAGIC_SYSRQ=y +# CONFIG_UNUSED_SYMBOLS is not set +# CONFIG_DEBUG_FS is not set +# CONFIG_HEADERS_CHECK is not set +CONFIG_DEBUG_KERNEL=y +# CONFIG_DEBUG_SHIRQ is not set +CONFIG_DETECT_SOFTLOCKUP=y +# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set +CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0 +# CONFIG_SCHED_DEBUG is not set +# CONFIG_SCHEDSTATS is not set +CONFIG_TIMER_STATS=y +# CONFIG_DEBUG_OBJECTS is not set +# CONFIG_DEBUG_SLAB is not set +CONFIG_DEBUG_PREEMPT=y +# CONFIG_DEBUG_RT_MUTEXES is not set +# CONFIG_RT_MUTEX_TESTER is not set +# CONFIG_DEBUG_SPINLOCK is not set +# CONFIG_DEBUG_MUTEXES is not set +# CONFIG_DEBUG_LOCK_ALLOC is not set +# CONFIG_PROVE_LOCKING is not set +# CONFIG_LOCK_STAT is not set +# CONFIG_DEBUG_SPINLOCK_SLEEP is not set +# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set +# CONFIG_DEBUG_KOBJECT is not set +# CONFIG_DEBUG_BUGVERBOSE is not set +# CONFIG_DEBUG_INFO is not set +# CONFIG_DEBUG_VM is not set +# CONFIG_DEBUG_WRITECOUNT is not set +# CONFIG_DEBUG_MEMORY_INIT is not set +# CONFIG_DEBUG_LIST is not set +# CONFIG_DEBUG_SG is not set +CONFIG_FRAME_POINTER=y +# CONFIG_BOOT_PRINTK_DELAY is not set +# CONFIG_RCU_TORTURE_TEST is not set +# CONFIG_BACKTRACE_SELF_TEST is not set +# CONFIG_FAULT_INJECTION is not set +# CONFIG_LATENCYTOP is not set +CONFIG_SYSCTL_SYSCALL_CHECK=y +CONFIG_HAVE_FTRACE=y +CONFIG_HAVE_DYNAMIC_FTRACE=y +# CONFIG_FTRACE is not set +# CONFIG_SCHED_TRACER is not set +# CONFIG_CONTEXT_SWITCH_TRACER is not set +# CONFIG_SAMPLES is not set +CONFIG_HAVE_ARCH_KGDB=y +# CONFIG_KGDB is not set +# CONFIG_DEBUG_USER is not set +CONFIG_DEBUG_ERRORS=y +# CONFIG_DEBUG_STACK_USAGE is not set +CONFIG_DEBUG_LL=y +# CONFIG_DEBUG_ICEDCC is not set +CONFIG_DEBUG_S3C_PORT=y +CONFIG_DEBUG_S3C_UART=2 + +# +# Security options +# +# CONFIG_KEYS is not set +# CONFIG_SECURITY is not set +# CONFIG_SECURITY_FILE_CAPABILITIES is not set +CONFIG_CRYPTO=y + +# +# Crypto core or helper +# +CONFIG_CRYPTO_ALGAPI=y +CONFIG_CRYPTO_AEAD=m +CONFIG_CRYPTO_BLKCIPHER=y +CONFIG_CRYPTO_HASH=y +CONFIG_CRYPTO_MANAGER=y +CONFIG_CRYPTO_GF128MUL=m +CONFIG_CRYPTO_NULL=m +# CONFIG_CRYPTO_CRYPTD is not set +CONFIG_CRYPTO_AUTHENC=m +CONFIG_CRYPTO_TEST=m + +# +# Authenticated Encryption with Associated Data +# +# CONFIG_CRYPTO_CCM is not set +# CONFIG_CRYPTO_GCM is not set +# CONFIG_CRYPTO_SEQIV is not set + +# +# Block modes +# +CONFIG_CRYPTO_CBC=y +# CONFIG_CRYPTO_CTR is not set +# CONFIG_CRYPTO_CTS is not set +CONFIG_CRYPTO_ECB=m +CONFIG_CRYPTO_LRW=m +CONFIG_CRYPTO_PCBC=m +# CONFIG_CRYPTO_XTS is not set + +# +# Hash modes +# +CONFIG_CRYPTO_HMAC=y +CONFIG_CRYPTO_XCBC=m + +# +# Digest +# +CONFIG_CRYPTO_CRC32C=m +CONFIG_CRYPTO_MD4=m +CONFIG_CRYPTO_MD5=y +CONFIG_CRYPTO_MICHAEL_MIC=m +# CONFIG_CRYPTO_RMD128 is not set +# CONFIG_CRYPTO_RMD160 is not set +# CONFIG_CRYPTO_RMD256 is not set +# CONFIG_CRYPTO_RMD320 is not set +CONFIG_CRYPTO_SHA1=m +CONFIG_CRYPTO_SHA256=m +CONFIG_CRYPTO_SHA512=m +CONFIG_CRYPTO_TGR192=m +CONFIG_CRYPTO_WP512=m + +# +# Ciphers +# +CONFIG_CRYPTO_AES=m +CONFIG_CRYPTO_ANUBIS=m +CONFIG_CRYPTO_ARC4=m +CONFIG_CRYPTO_BLOWFISH=m +CONFIG_CRYPTO_CAMELLIA=m +CONFIG_CRYPTO_CAST5=m +CONFIG_CRYPTO_CAST6=m +CONFIG_CRYPTO_DES=y +CONFIG_CRYPTO_FCRYPT=m +CONFIG_CRYPTO_KHAZAD=m +# CONFIG_CRYPTO_SALSA20 is not set +# CONFIG_CRYPTO_SEED is not set +CONFIG_CRYPTO_SERPENT=m +CONFIG_CRYPTO_TEA=m +CONFIG_CRYPTO_TWOFISH=m +CONFIG_CRYPTO_TWOFISH_COMMON=m + +# +# Compression +# +CONFIG_CRYPTO_DEFLATE=m +# CONFIG_CRYPTO_LZO is not set +CONFIG_CRYPTO_HW=y + +# +# Library routines +# +CONFIG_BITREVERSE=y +# CONFIG_GENERIC_FIND_FIRST_BIT is not set +# CONFIG_GENERIC_FIND_NEXT_BIT is not set +CONFIG_CRC_CCITT=m +CONFIG_CRC16=m +# CONFIG_CRC_T10DIF is not set +# CONFIG_CRC_ITU_T is not set +CONFIG_CRC32=y +CONFIG_CRC7=y +CONFIG_LIBCRC32C=m +CONFIG_ZLIB_INFLATE=y +CONFIG_ZLIB_DEFLATE=y +CONFIG_TEXTSEARCH=y +CONFIG_TEXTSEARCH_KMP=m +CONFIG_TEXTSEARCH_BM=m +CONFIG_TEXTSEARCH_FSM=m +CONFIG_PLIST=y +CONFIG_HAS_IOMEM=y +CONFIG_HAS_DMA=y diff --git a/drivers/Kconfig b/drivers/Kconfig index 1265b93a5bb..cc7fbe9901d 100644 --- a/drivers/Kconfig +++ b/drivers/Kconfig @@ -109,4 +109,6 @@ source "drivers/uio/Kconfig" source "drivers/xen/Kconfig" source "drivers/staging/Kconfig" + +source "drivers/android/Kconfig" endmenu diff --git a/drivers/Makefile b/drivers/Makefile index ca7b4c243ac..82ed733df45 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -99,6 +99,7 @@ obj-$(CONFIG_DCA) += dca/ obj-$(CONFIG_HID) += hid/ obj-$(CONFIG_PPC_PS3) += ps3/ obj-$(CONFIG_OF) += of/ +obj-y += android/ obj-$(CONFIG_SSB) += ssb/ obj-$(CONFIG_VIRTIO) += virtio/ obj-$(CONFIG_REGULATOR) += regulator/ diff --git a/drivers/android/Kconfig b/drivers/android/Kconfig new file mode 100644 index 00000000000..dac94bc7b49 --- /dev/null +++ b/drivers/android/Kconfig @@ -0,0 +1,93 @@ +menu "Android" + +config ANDROID_BINDER_IPC + tristate "Binder IPC Driver" + default y + +config ANDROID_POWER + bool "Android power driver" + depends on PM && RTC_CLASS + default n + +config ANDROID_POWER_STAT + bool "Android power driver lock stats" + depends on ANDROID_POWER + default y + +config ANDROID_POWER_ALARM + bool "Android alarm driver" + depends on ANDROID_POWER + default y + +config ANDROID_LOGGER + bool "Android log driver" + default y + +config ANDROID_RAM_CONSOLE + bool "RAM buffer console" + default n + +config ANDROID_RAM_CONSOLE_ENABLE_VERBOSE + bool "Enable verbose console messages" + default y + depends on ANDROID_RAM_CONSOLE + +menuconfig ANDROID_RAM_CONSOLE_ERROR_CORRECTION + bool "Enable error correction" + default n + depends on ANDROID_RAM_CONSOLE + select REED_SOLOMON + select REED_SOLOMON_ENC8 + select REED_SOLOMON_DEC8 + +if ANDROID_RAM_CONSOLE_ERROR_CORRECTION + +config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_DATA_SIZE + int "Data data size" + default 128 + help + Must be a power of 2. + +config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_ECC_SIZE + int "ECC size" + default 16 + +config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE + int "Symbol size" + default 8 + +config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_POLYNOMIAL + hex "Polynomial" + default 0x19 if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 4) + default 0x29 if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 5) + default 0x61 if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 6) + default 0x89 if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 7) + default 0x11d if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 8) + +endif #ANDROID_RAM_CONSOLE_ERROR_CORRECTION + +config ANDROID_RAM_CONSOLE_EARLY_INIT + bool "Start ram console early" + default n + depends on ANDROID_RAM_CONSOLE + +config ANDROID_RAM_CONSOLE_EARLY_ADDR + hex "RAM console virtual address" + default 0 + depends on ANDROID_RAM_CONSOLE_EARLY_INIT + +config ANDROID_RAM_CONSOLE_EARLY_SIZE + hex "RAM console buffer size" + default 0 + depends on ANDROID_RAM_CONSOLE_EARLY_INIT + +config ANDROID_TIMED_GPIO + bool "Android timed gpio driver" + depends on GENERIC_GPIO + default y + +config ANDROID_PARANOID_NETWORK + bool "Only allow certain groups to create sockets" + default y + +endmenu diff --git a/drivers/android/Makefile b/drivers/android/Makefile new file mode 100644 index 00000000000..178d2435e64 --- /dev/null +++ b/drivers/android/Makefile @@ -0,0 +1,6 @@ +obj-$(CONFIG_ANDROID_BINDER_IPC) += binder.o +obj-$(CONFIG_ANDROID_POWER) += power.o +obj-$(CONFIG_ANDROID_POWER_ALARM) += alarm.o +obj-$(CONFIG_ANDROID_LOGGER) += logger.o +obj-$(CONFIG_ANDROID_RAM_CONSOLE) += ram_console.o +obj-$(CONFIG_ANDROID_TIMED_GPIO) += timed_gpio.o diff --git a/drivers/android/alarm.c b/drivers/android/alarm.c new file mode 100644 index 00000000000..317e2c648f5 --- /dev/null +++ b/drivers/android/alarm.c @@ -0,0 +1,542 @@ +/* drivers/android/alarm.c + * + * Copyright (C) 2007 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <asm/mach/time.h> +#include <linux/android_alarm.h> +#include <linux/android_power.h> +#include <linux/device.h> +#include <linux/miscdevice.h> +#include <linux/platform_device.h> +#include <linux/rtc.h> +#include <linux/spinlock.h> +#include <linux/sysdev.h> + +#define ANDROID_ALARM_PRINT_ERRORS (1U << 0) +#define ANDROID_ALARM_PRINT_INIT_STATUS (1U << 1) +#define ANDROID_ALARM_PRINT_INFO (1U << 2) +#define ANDROID_ALARM_PRINT_IO (1U << 3) +#define ANDROID_ALARM_PRINT_INT (1U << 4) +#define ANDROID_ALARM_PRINT_FLOW (1U << 5) + +#if 0 +#define ANDROID_ALARM_DPRINTF_MASK (~0) +#define ANDROID_ALARM_DPRINTF(debug_level_mask, args...) \ + do { \ + if(ANDROID_ALARM_DPRINTF_MASK & debug_level_mask) { \ + printk(args); \ + } \ + } while(0) +#else +#define ANDROID_ALARM_DPRINTF(args...) +#endif + +// support old usespace code +#define ANDROID_ALARM_SET_OLD _IOW('a', 2, time_t) // set alarm +#define ANDROID_ALARM_SET_AND_WAIT_OLD _IOW('a', 3, time_t) + +static struct rtc_device *alarm_rtc_dev; +static int alarm_opened; +static DEFINE_SPINLOCK(alarm_slock); +static DEFINE_MUTEX(alarm_setrtc_mutex); +static android_suspend_lock_t alarm_suspend_lock = { + .name = "android_alarm" +}; +static android_suspend_lock_t alarm_rtc_suspend_lock = { + .name = "android_alarm_rtc" +}; +static DECLARE_WAIT_QUEUE_HEAD(alarm_wait_queue); +static uint32_t alarm_pending; +static uint32_t alarm_enabled; +static uint32_t wait_pending; +static struct platform_device *alarm_platform_dev; +static struct hrtimer alarm_timer[ANDROID_ALARM_TYPE_COUNT]; +static struct timespec alarm_time[ANDROID_ALARM_TYPE_COUNT]; +static struct timespec elapsed_rtc_delta; + +static void alarm_start_hrtimer(android_alarm_type_t alarm_type) +{ + struct timespec hr_alarm_time; + if(!(alarm_enabled & (1U << alarm_type))) + return; + hr_alarm_time = alarm_time[alarm_type]; + if(alarm_type == ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP || alarm_type == ANDROID_ALARM_ELAPSED_REALTIME) + set_normalized_timespec(&hr_alarm_time, hr_alarm_time.tv_sec + elapsed_rtc_delta.tv_sec, + hr_alarm_time.tv_nsec + elapsed_rtc_delta.tv_nsec); + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_FLOW, "alarm start hrtimer %d at %ld.%09ld\n", alarm_type, hr_alarm_time.tv_sec, hr_alarm_time.tv_nsec); + hrtimer_start(&alarm_timer[alarm_type], timespec_to_ktime(hr_alarm_time), HRTIMER_MODE_ABS); +} + +static long alarm_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + int rv = 0; + unsigned long flags; + int i; + struct timespec new_alarm_time; + struct timespec new_rtc_time; + struct timespec tmp_time; + struct rtc_time rtc_new_rtc_time; + android_alarm_type_t alarm_type = ANDROID_ALARM_IOCTL_TO_TYPE(cmd); + uint32_t alarm_type_mask = 1U << alarm_type; + + if(alarm_type >= ANDROID_ALARM_TYPE_COUNT) + return -EINVAL; + + if(ANDROID_ALARM_BASE_CMD(cmd) != ANDROID_ALARM_GET_TIME(0)) { + if ((file->f_flags & O_ACCMODE) == O_RDONLY) + return -EPERM; + if(file->private_data == NULL && cmd != ANDROID_ALARM_SET_RTC) { + spin_lock_irqsave(&alarm_slock, flags); + if(alarm_opened) { + spin_unlock_irqrestore(&alarm_slock, flags); + return -EBUSY; + } + alarm_opened = 1; + file->private_data = (void *)1; + spin_unlock_irqrestore(&alarm_slock, flags); + } + } + + switch(ANDROID_ALARM_BASE_CMD(cmd)) { + //case ANDROID_ALARM_CLEAR_OLD: // same as ANDROID_ALARM_CLEAR(0) + case ANDROID_ALARM_CLEAR(0): + spin_lock_irqsave(&alarm_slock, flags); + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_IO, "alarm %d clear\n", alarm_type); + hrtimer_try_to_cancel(&alarm_timer[alarm_type]); + if(alarm_pending) { + alarm_pending &= ~alarm_type_mask; + if(!alarm_pending && !wait_pending) { + android_unlock_suspend(&alarm_suspend_lock); + } + } + alarm_enabled &= ~alarm_type_mask; + spin_unlock_irqrestore(&alarm_slock, flags); + break; + + case ANDROID_ALARM_SET_OLD: + case ANDROID_ALARM_SET_AND_WAIT_OLD: + if(get_user(new_alarm_time.tv_sec, (int __user *)arg)) { + rv = -EFAULT; + goto err1; + } + new_alarm_time.tv_nsec = 0; + goto from_old_alarm_set; + + case ANDROID_ALARM_SET_AND_WAIT(0): + case ANDROID_ALARM_SET(0): + if(copy_from_user(&new_alarm_time, (void __user *)arg, sizeof(new_alarm_time))) { + rv = -EFAULT; + goto err1; + } +from_old_alarm_set: + spin_lock_irqsave(&alarm_slock, flags); + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_IO, "alarm %d set %ld.%09ld\n", alarm_type, new_alarm_time.tv_sec, new_alarm_time.tv_nsec); + alarm_time[alarm_type] = new_alarm_time; + alarm_enabled |= alarm_type_mask; + alarm_start_hrtimer(alarm_type); + spin_unlock_irqrestore(&alarm_slock, flags); + if(ANDROID_ALARM_BASE_CMD(cmd) != ANDROID_ALARM_SET_AND_WAIT(0) && cmd != ANDROID_ALARM_SET_AND_WAIT_OLD) + break; + // fall though + case ANDROID_ALARM_WAIT: + spin_lock_irqsave(&alarm_slock, flags); + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_IO, "alarm wait\n"); + if(!alarm_pending && wait_pending) { + android_unlock_suspend(&alarm_suspend_lock); + wait_pending = 0; + } + spin_unlock_irqrestore(&alarm_slock, flags); + rv = wait_event_interruptible(alarm_wait_queue, alarm_pending); + if(rv) + goto err1; + spin_lock_irqsave(&alarm_slock, flags); + rv = alarm_pending; + wait_pending = 1; + alarm_pending = 0; + if(rv & (ANDROID_ALARM_RTC_WAKEUP_MASK | ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP_MASK)) { + android_unlock_suspend(&alarm_rtc_suspend_lock); + } + spin_unlock_irqrestore(&alarm_slock, flags); + break; + case ANDROID_ALARM_SET_RTC: + if(copy_from_user(&new_rtc_time, (void __user *)arg, sizeof(new_rtc_time))) { + rv = -EFAULT; + goto err1; + } + rtc_time_to_tm(new_rtc_time.tv_sec, &rtc_new_rtc_time); + + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_IO, + "set rtc %ld %ld - rtc %02d:%02d:%02d %02d/%02d/%04d\n", + new_rtc_time.tv_sec, new_rtc_time.tv_nsec, + rtc_new_rtc_time.tm_hour, rtc_new_rtc_time.tm_min, + rtc_new_rtc_time.tm_sec, rtc_new_rtc_time.tm_mon + 1, + rtc_new_rtc_time.tm_mday, rtc_new_rtc_time.tm_year + 1900); + + mutex_lock(&alarm_setrtc_mutex); + spin_lock_irqsave(&alarm_slock, flags); + for (i = 0; i < ANDROID_ALARM_SYSTEMTIME; i++) + hrtimer_try_to_cancel(&alarm_timer[i]); + getnstimeofday(&tmp_time); + elapsed_rtc_delta = timespec_sub(elapsed_rtc_delta, timespec_sub(tmp_time, new_rtc_time)); + spin_unlock_irqrestore(&alarm_slock, flags); + rv = do_settimeofday(&new_rtc_time); + spin_lock_irqsave(&alarm_slock, flags); + for (i = 0; i < ANDROID_ALARM_SYSTEMTIME; i++) + alarm_start_hrtimer(i); + spin_unlock_irqrestore(&alarm_slock, flags); + if(rv < 0) { + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_ERRORS, "Failed to set time\n"); + mutex_unlock(&alarm_setrtc_mutex); + goto err1; + } + rv = rtc_set_time(alarm_rtc_dev, &rtc_new_rtc_time); + spin_lock_irqsave(&alarm_slock, flags); + alarm_pending |= ANDROID_ALARM_TIME_CHANGE_MASK; + wake_up(&alarm_wait_queue); + spin_unlock_irqrestore(&alarm_slock, flags); + mutex_unlock(&alarm_setrtc_mutex); + if(rv < 0) { + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_ERRORS, "Failed to set RTC, time will be lost on reboot\n"); + goto err1; + } + break; + case ANDROID_ALARM_GET_TIME(0): + mutex_lock(&alarm_setrtc_mutex); + spin_lock_irqsave(&alarm_slock, flags); + if(alarm_type != ANDROID_ALARM_SYSTEMTIME) { + getnstimeofday(&tmp_time); + if(alarm_type >= ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP) { + tmp_time = timespec_sub(tmp_time, elapsed_rtc_delta); + } + } + else + ktime_get_ts(&tmp_time); + spin_unlock_irqrestore(&alarm_slock, flags); + mutex_unlock(&alarm_setrtc_mutex); + if(copy_to_user((void __user *)arg, &tmp_time, sizeof(tmp_time))) { + rv = -EFAULT; + goto err1; + } + break; + + default: + rv = -EINVAL; + goto err1; + } +err1: + return rv; +} + +static int alarm_open(struct inode *inode, struct file *file) +{ + file->private_data = NULL; + return 0; +} + +static int alarm_release(struct inode *inode, struct file *file) +{ + int i; + unsigned long flags; + + spin_lock_irqsave(&alarm_slock, flags); + if(file->private_data != 0) { + for(i = 0; i < ANDROID_ALARM_TYPE_COUNT; i++) { + uint32_t alarm_type_mask = 1U << i; + if(alarm_enabled & alarm_type_mask) { + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_INFO, "alarm_release: clear alarm, pending %d\n", !!(alarm_pending & alarm_type_mask)); + alarm_enabled &= ~alarm_type_mask; + } + spin_unlock_irqrestore(&alarm_slock, flags); + hrtimer_cancel(&alarm_timer[i]); + spin_lock_irqsave(&alarm_slock, flags); + } + if(alarm_pending | wait_pending) { + if(alarm_pending) + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_INFO, "alarm_release: clear pending alarms %x\n", alarm_pending); + android_unlock_suspend(&alarm_suspend_lock); + wait_pending = 0; + alarm_pending = 0; + } + alarm_opened = 0; + } + spin_unlock_irqrestore(&alarm_slock, flags); + return 0; +} + +static enum hrtimer_restart alarm_timer_triggered(struct hrtimer *timer) +{ + unsigned long flags; + android_alarm_type_t alarm_type = (timer - alarm_timer); + uint32_t alarm_type_mask = 1U << alarm_type; + + + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_INT, "alarm_timer_triggered type %d\n", alarm_type); + spin_lock_irqsave(&alarm_slock, flags); + if (alarm_enabled & alarm_type_mask) { + android_lock_suspend_auto_expire(&alarm_suspend_lock, 5 * HZ); + alarm_enabled &= ~alarm_type_mask; + alarm_pending |= alarm_type_mask; + wake_up(&alarm_wait_queue); + } + spin_unlock_irqrestore(&alarm_slock, flags); + return HRTIMER_NORESTART; +} + +static void alarm_triggered_func(void *p) +{ +// unsigned long flags; + + struct rtc_device *rtc = alarm_rtc_dev; + if(rtc->irq_data & RTC_AF) { + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_INT, "alarm_triggered_func:\n"); + android_lock_suspend_auto_expire(&alarm_rtc_suspend_lock, 1 * HZ); + } +} + +int alarm_suspend(struct platform_device *pdev, pm_message_t state) +{ + int err = 0; + unsigned long flags; + struct rtc_wkalrm rtc_alarm; + struct rtc_time rtc_current_rtc_time; + unsigned long rtc_current_time; + unsigned long rtc_alarm_time; + struct timespec rtc_current_timespec; + struct timespec rtc_delta; + struct timespec elapsed_realtime_alarm_time; + + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_FLOW, "alarm_suspend(%p, %d)\n", pdev, state.event); + spin_lock_irqsave(&alarm_slock, flags); + if(alarm_pending && (alarm_suspend_lock.flags & ANDROID_SUSPEND_LOCK_AUTO_EXPIRE)) { + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_INFO, "alarm pending\n"); + err = -EBUSY; + goto err1; + } + if(alarm_enabled & (ANDROID_ALARM_RTC_WAKEUP_MASK | ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP_MASK)) { + spin_unlock_irqrestore(&alarm_slock, flags); + if(alarm_enabled & ANDROID_ALARM_RTC_WAKEUP_MASK) + hrtimer_cancel(&alarm_timer[ANDROID_ALARM_RTC_WAKEUP]); + if(alarm_enabled & ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP_MASK) + hrtimer_cancel(&alarm_timer[ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP]); + + rtc_read_time(alarm_rtc_dev, &rtc_current_rtc_time); + rtc_current_timespec.tv_nsec = 0; + rtc_tm_to_time(&rtc_current_rtc_time, &rtc_current_timespec.tv_sec); + save_time_delta(&rtc_delta, &rtc_current_timespec); + set_normalized_timespec(&elapsed_realtime_alarm_time, + alarm_time[ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP].tv_sec + elapsed_rtc_delta.tv_sec, + alarm_time[ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP].tv_nsec + elapsed_rtc_delta.tv_nsec); + if((alarm_enabled & ANDROID_ALARM_RTC_WAKEUP_MASK) && + (!(alarm_enabled & ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP_MASK) + || timespec_compare(&alarm_time[ANDROID_ALARM_RTC_WAKEUP], &elapsed_realtime_alarm_time) < 0)) + rtc_alarm_time = timespec_sub(alarm_time[ANDROID_ALARM_RTC_WAKEUP], rtc_delta).tv_sec; + else { + rtc_alarm_time = timespec_sub(elapsed_realtime_alarm_time, rtc_delta).tv_sec; + } + rtc_time_to_tm(rtc_alarm_time, &rtc_alarm.time); + rtc_alarm.enabled = 1; + rtc_set_alarm(alarm_rtc_dev, &rtc_alarm); + rtc_read_time(alarm_rtc_dev, &rtc_current_rtc_time); + rtc_tm_to_time(&rtc_current_rtc_time, &rtc_current_time); + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_INFO, + "rtc alarm set at %ld, now %ld, rtc delta %ld.%09ld\n", + rtc_alarm_time, rtc_current_time, + rtc_delta.tv_sec, rtc_delta.tv_nsec); + if(rtc_current_time + 1 >= rtc_alarm_time) { + //spin_lock_irqsave(&alarm_slock, flags); + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_INFO, "alarm about to go off\n"); + memset(&rtc_alarm, 0, sizeof(rtc_alarm)); + rtc_alarm.enabled = 0; + rtc_set_alarm(alarm_rtc_dev, &rtc_alarm); + + spin_lock_irqsave(&alarm_slock, flags); + android_lock_suspend_auto_expire(&alarm_rtc_suspend_lock, 2 * HZ); // trigger a wakeup + alarm_start_hrtimer(ANDROID_ALARM_RTC_WAKEUP); + alarm_start_hrtimer(ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP); + err = -EBUSY; + spin_unlock_irqrestore(&alarm_slock, flags); + } + } + else { +err1: + spin_unlock_irqrestore(&alarm_slock, flags); + } + return err; +} + +int alarm_resume(struct platform_device *pdev) +{ + struct rtc_wkalrm alarm; + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_FLOW, "alarm_resume(%p)\n", pdev); + if(alarm_enabled & (ANDROID_ALARM_RTC_WAKEUP_MASK | ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP_MASK)) { + memset(&alarm, 0, sizeof(alarm)); + alarm.enabled = 0; + rtc_set_alarm(alarm_rtc_dev, &alarm); + alarm_start_hrtimer(ANDROID_ALARM_RTC_WAKEUP); + alarm_start_hrtimer(ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP); + } + return 0; +} + +static struct rtc_task alarm_rtc_task = { + .func = alarm_triggered_func +}; + +static struct file_operations alarm_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = alarm_ioctl, + .open = alarm_open, + .release = alarm_release, +}; + +static struct miscdevice alarm_device = { + .minor = MISC_DYNAMIC_MINOR, + .name = "alarm", + .fops = &alarm_fops, +}; + +static int rtc_alarm_add_device(struct device *dev, + struct class_interface *class_intf) +{ + int err; + struct rtc_device *rtc = to_rtc_device(dev); + + mutex_lock(&alarm_setrtc_mutex); + + if(alarm_rtc_dev) { + err = -EBUSY; + goto err1; + } + + err = misc_register(&alarm_device); + if(err) + goto err1; + alarm_platform_dev = platform_device_register_simple("alarm", -1, NULL, 0); + if(IS_ERR(alarm_platform_dev)) { + err = PTR_ERR(alarm_platform_dev); + goto err2; + } + err = rtc_irq_register(rtc, &alarm_rtc_task); + if(err) + goto err3; + alarm_rtc_dev = rtc; + mutex_unlock(&alarm_setrtc_mutex); + + //device_pm_set_parent(&alarm_platform_dev->dev, dev); // currently useless, drivers are suspended in reverse creation order + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_INFO, "alarm: parent %p\n", alarm_platform_dev->dev.power.pm_parent); + return 0; + +err3: + platform_device_unregister(alarm_platform_dev); +err2: + misc_deregister(&alarm_device); +err1: + mutex_unlock(&alarm_setrtc_mutex); + return err; +} + +static void rtc_alarm_remove_device(struct device *dev, + struct class_interface *class_intf) +{ + if(dev == &alarm_rtc_dev->dev) { + rtc_irq_unregister(alarm_rtc_dev, &alarm_rtc_task); + platform_device_unregister(alarm_platform_dev); + misc_deregister(&alarm_device); + alarm_rtc_dev = NULL; + } +} + +static struct class_interface rtc_alarm_interface = { + .add_dev = &rtc_alarm_add_device, + .remove_dev = &rtc_alarm_remove_device, +}; + +static struct platform_driver alarm_driver = { + .suspend = alarm_suspend, + .resume = alarm_resume, + .driver = { + .name = "alarm" + } +}; + +static int __init alarm_late_init(void) +{ + unsigned long flags; + struct timespec system_time; + + // this needs to run after the rtc is read at boot + spin_lock_irqsave(&alarm_slock, flags); + // We read the current rtc and system time so we can later calulate + // elasped realtime to be (boot_systemtime + rtc - boot_rtc) == + // (rtc - (boot_rtc - boot_systemtime)) + getnstimeofday(&elapsed_rtc_delta); + ktime_get_ts(&system_time); + elapsed_rtc_delta = timespec_sub(elapsed_rtc_delta, system_time); + spin_unlock_irqrestore(&alarm_slock, flags); + + ANDROID_ALARM_DPRINTF(ANDROID_ALARM_PRINT_INFO, + "alarm_late_init: rtc to elapsed realtime delta %ld.%09ld\n", + elapsed_rtc_delta.tv_sec, elapsed_rtc_delta.tv_nsec); + return 0; +} + +static int __init alarm_init(void) +{ + int err; + int i; + + for(i = 0; i < ANDROID_ALARM_SYSTEMTIME; i++) { + hrtimer_init(&alarm_timer[i], CLOCK_REALTIME, HRTIMER_MODE_ABS); + alarm_timer[i].function = alarm_timer_triggered; + } + hrtimer_init(&alarm_timer[ANDROID_ALARM_SYSTEMTIME], CLOCK_MONOTONIC, HRTIMER_MODE_ABS); + alarm_timer[ANDROID_ALARM_SYSTEMTIME].function = alarm_timer_triggered; + err = platform_driver_register(&alarm_driver); + if(err < 0) + goto err1; + err = android_init_suspend_lock(&alarm_suspend_lock); + if(err < 0) + goto err2; + err = android_init_suspend_lock(&alarm_rtc_suspend_lock); + if(err < 0) + goto err3; + rtc_alarm_interface.class = rtc_class; + err = class_interface_register(&rtc_alarm_interface); + if(err < 0) + goto err4; + + return 0; + +err4: + android_uninit_suspend_lock(&alarm_rtc_suspend_lock); +err3: + android_uninit_suspend_lock(&alarm_suspend_lock); +err2: + platform_driver_unregister(&alarm_driver); +err1: + return err; +} + +static void __exit alarm_exit(void) +{ + class_interface_unregister(&rtc_alarm_interface); + android_uninit_suspend_lock(&alarm_rtc_suspend_lock); + android_uninit_suspend_lock(&alarm_suspend_lock); + platform_driver_unregister(&alarm_driver); +} + +late_initcall(alarm_late_init); +module_init(alarm_init); +module_exit(alarm_exit); + diff --git a/drivers/android/binder.c b/drivers/android/binder.c new file mode 100644 index 00000000000..597578b7dfb --- /dev/null +++ b/drivers/android/binder.c @@ -0,0 +1,3499 @@ +/* drivers/android/binder.c + * + * Android IPC Subsystem + * + * Copyright (C) 2007-2008 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <asm/cacheflush.h> +#include <linux/binder.h> +#include <linux/fdtable.h> +#include <linux/file.h> +#include <linux/fs.h> +#include <linux/list.h> +#include <linux/miscdevice.h> +#include <linux/mm.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/nsproxy.h> +#include <linux/poll.h> +#include <linux/proc_fs.h> +#include <linux/rbtree.h> +#include <linux/sched.h> +#include <linux/uaccess.h> +#include <linux/vmalloc.h> + +static DEFINE_MUTEX(binder_lock); +static HLIST_HEAD(binder_procs); +static struct binder_node *binder_context_mgr_node; +static uid_t binder_context_mgr_uid = -1; +static int binder_last_id; +static struct proc_dir_entry *binder_proc_dir_entry_root; +static struct proc_dir_entry *binder_proc_dir_entry_proc; +static struct hlist_head binder_dead_nodes; + +static int binder_read_proc_proc( + char *page, char **start, off_t off, int count, int *eof, void *data); + +/* This is only defined in include/asm-arm/sizes.h */ +#ifndef SZ_1K +#define SZ_1K 0x400 +#endif + +#ifndef SZ_4M +#define SZ_4M 0x400000 +#endif + +#ifndef __i386__ +#define FORBIDDEN_MMAP_FLAGS (VM_WRITE | VM_EXEC) +#else +#define FORBIDDEN_MMAP_FLAGS (VM_WRITE) +#endif + +#define BINDER_SMALL_BUF_SIZE (PAGE_SIZE * 64) + +enum { + BINDER_DEBUG_USER_ERROR = 1U << 0, + BINDER_DEBUG_FAILED_TRANSACTION = 1U << 1, + BINDER_DEBUG_DEAD_TRANSACTION = 1U << 2, + BINDER_DEBUG_OPEN_CLOSE = 1U << 3, + BINDER_DEBUG_DEAD_BINDER = 1U << 4, + BINDER_DEBUG_DEATH_NOTIFICATION = 1U << 5, + BINDER_DEBUG_READ_WRITE = 1U << 6, + BINDER_DEBUG_USER_REFS = 1U << 7, + BINDER_DEBUG_THREADS = 1U << 8, + BINDER_DEBUG_TRANSACTION = 1U << 9, + BINDER_DEBUG_TRANSACTION_COMPLETE = 1U << 10, + BINDER_DEBUG_FREE_BUFFER = 1U << 11, + BINDER_DEBUG_INTERNAL_REFS = 1U << 12, + BINDER_DEBUG_BUFFER_ALLOC = 1U << 13, + BINDER_DEBUG_PRIORITY_CAP = 1U << 14, + BINDER_DEBUG_BUFFER_ALLOC_ASYNC = 1U << 15, +}; +static uint32_t binder_debug_mask = BINDER_DEBUG_USER_ERROR | + BINDER_DEBUG_FAILED_TRANSACTION | BINDER_DEBUG_DEAD_TRANSACTION; +module_param_named(debug_mask, binder_debug_mask, uint, S_IWUSR | S_IRUGO) +static int binder_debug_no_lock; +module_param_named(proc_no_lock, binder_debug_no_lock, bool, S_IWUSR | S_IRUGO) +static DECLARE_WAIT_QUEUE_HEAD(binder_user_error_wait); +static int binder_stop_on_user_error; +static int binder_set_stop_on_user_error( + const char *val, struct kernel_param *kp) +{ + int ret; + ret = param_set_int(val, kp); + if (binder_stop_on_user_error < 2) + wake_up(&binder_user_error_wait); + return ret; +} +module_param_call(stop_on_user_error, binder_set_stop_on_user_error, + param_get_int, &binder_stop_on_user_error, S_IWUSR | S_IRUGO); + +#define binder_user_error(x...) \ + do { \ + if (binder_debug_mask & BINDER_DEBUG_USER_ERROR) \ + printk(KERN_INFO x); \ + if (binder_stop_on_user_error) \ + binder_stop_on_user_error = 2; \ + } while (0) + +enum { + BINDER_STAT_PROC, + BINDER_STAT_THREAD, + BINDER_STAT_NODE, + BINDER_STAT_REF, + BINDER_STAT_DEATH, + BINDER_STAT_TRANSACTION, + BINDER_STAT_TRANSACTION_COMPLETE, + BINDER_STAT_COUNT +}; + +struct binder_stats { + int br[_IOC_NR(BR_FAILED_REPLY) + 1]; + int bc[_IOC_NR(BC_DEAD_BINDER_DONE) + 1]; + int obj_created[BINDER_STAT_COUNT]; + int obj_deleted[BINDER_STAT_COUNT]; +}; + +static struct binder_stats binder_stats; + +struct binder_transaction_log_entry { + int debug_id; + int call_type; + int from_proc; + int from_thread; + int target_handle; + int to_proc; + int to_thread; + int to_node; + int data_size; + int offsets_size; +}; +struct binder_transaction_log { + int next; + int full; + struct binder_transaction_log_entry entry[32]; +}; +struct binder_transaction_log binder_transaction_log; +struct binder_transaction_log binder_transaction_log_failed; + +static struct binder_transaction_log_entry *binder_transaction_log_add( + struct binder_transaction_log *log) +{ + struct binder_transaction_log_entry *e; + e = &log->entry[log->next]; + memset(e, 0, sizeof(*e)); + log->next++; + if (log->next == ARRAY_SIZE(log->entry)) { + log->next = 0; + log->full = 1; + } + return e; +} + +struct binder_work { + struct list_head entry; + enum { + BINDER_WORK_TRANSACTION = 1, + BINDER_WORK_TRANSACTION_COMPLETE, + BINDER_WORK_NODE, + BINDER_WORK_DEAD_BINDER, + BINDER_WORK_DEAD_BINDER_AND_CLEAR, + BINDER_WORK_CLEAR_DEATH_NOTIFICATION, + } type; +}; + +struct binder_node { + int debug_id; + struct binder_work work; + union { + struct rb_node rb_node; + struct hlist_node dead_node; + }; + struct binder_proc *proc; + struct hlist_head refs; + int internal_strong_refs; + int local_weak_refs; + int local_strong_refs; + void __user *ptr; + void __user *cookie; + unsigned has_strong_ref : 1; + unsigned pending_strong_ref : 1; + unsigned has_weak_ref : 1; + unsigned pending_weak_ref : 1; + unsigned has_async_transaction : 1; + unsigned accept_fds : 1; + int min_priority : 8; + struct list_head async_todo; +}; + +struct binder_ref_death { + struct binder_work work; + void __user *cookie; +}; + +struct binder_ref { + /* Lookups needed: */ + /* node + proc => ref (transaction) */ + /* desc + proc => ref (transaction, inc/dec ref) */ + /* node => refs + procs (proc exit) */ + int debug_id; + struct rb_node rb_node_desc; + struct rb_node rb_node_node; + struct hlist_node node_entry; + struct binder_proc *proc; + struct binder_node *node; + uint32_t desc; + int strong; + int weak; + struct binder_ref_death *death; +}; + +struct binder_buffer { + struct list_head entry; /* free and allocated entries by addesss */ + struct rb_node rb_node; /* free entry by size or allocated entry */ + /* by address */ + unsigned free : 1; + unsigned allow_user_free : 1; + unsigned async_transaction : 1; + unsigned debug_id : 29; + + struct binder_transaction *transaction; + + struct binder_node *target_node; + size_t data_size; + size_t offsets_size; + uint8_t data[0]; +}; + +struct binder_proc { + struct hlist_node proc_node; + struct rb_root threads; + struct rb_root nodes; + struct rb_root refs_by_desc; + struct rb_root refs_by_node; + int pid; + struct vm_area_struct *vma; + struct task_struct *tsk; + void *buffer; + size_t user_buffer_offset; + + struct list_head buffers; + struct rb_root free_buffers; + struct rb_root allocated_buffers; + size_t free_async_space; + + struct page **pages; + size_t buffer_size; + uint32_t buffer_free; + struct list_head todo; + wait_queue_head_t wait; + struct binder_stats stats; + struct list_head delivered_death; + int max_threads; + int requested_threads; + int requested_threads_started; + int ready_threads; + long default_priority; +}; + +enum { + BINDER_LOOPER_STATE_REGISTERED = 0x01, + BINDER_LOOPER_STATE_ENTERED = 0x02, + BINDER_LOOPER_STATE_EXITED = 0x04, + BINDER_LOOPER_STATE_INVALID = 0x08, + BINDER_LOOPER_STATE_WAITING = 0x10, + BINDER_LOOPER_STATE_NEED_RETURN = 0x20 +}; + +struct binder_thread { + struct binder_proc *proc; + struct rb_node rb_node; + int pid; + int looper; + struct binder_transaction *transaction_stack; + struct list_head todo; + uint32_t return_error; /* Write failed, return error code in read buf */ + uint32_t return_error2; /* Write failed, return error code in read */ + /* buffer. Used when sending a reply to a dead process that */ + /* we are also waiting on */ + wait_queue_head_t wait; + struct binder_stats stats; +}; + +struct binder_transaction { + int debug_id; + struct binder_work work; + struct binder_thread *from; + struct binder_transaction *from_parent; + struct binder_proc *to_proc; + struct binder_thread *to_thread; + struct binder_transaction *to_parent; + unsigned need_reply : 1; + /*unsigned is_dead : 1;*/ /* not used at the moment */ + + struct binder_buffer *buffer; + unsigned int code; + unsigned int flags; + long priority; + long saved_priority; + uid_t sender_euid; +}; + +/* + * copied from get_unused_fd_flags + */ +int task_get_unused_fd_flags(struct task_struct *tsk, int flags) +{ + struct files_struct *files = get_files_struct(tsk); + int fd, error; + struct fdtable *fdt; + unsigned long rlim_cur; + + if (files == NULL) + return -ESRCH; + + error = -EMFILE; + spin_lock(&files->file_lock); + +repeat: + fdt = files_fdtable(files); + fd = find_next_zero_bit(fdt->open_fds->fds_bits, fdt->max_fds, + files->next_fd); + + /* + * N.B. For clone tasks sharing a files structure, this test + * will limit the total number of files that can be opened. + */ + rcu_read_lock(); + if (tsk->signal) + rlim_cur = tsk->signal->rlim[RLIMIT_NOFILE].rlim_cur; + else + rlim_cur = 0; + rcu_read_unlock(); + if (fd >= rlim_cur) + goto out; + + /* Do we need to expand the fd array or fd set? */ + error = expand_files(files, fd); + if (error < 0) + goto out; + + if (error) { + /* + * If we needed to expand the fs array we + * might have blocked - try again. + */ + error = -EMFILE; + goto repeat; + } + + FD_SET(fd, fdt->open_fds); + if (flags & O_CLOEXEC) + FD_SET(fd, fdt->close_on_exec); + else + FD_CLR(fd, fdt->close_on_exec); + files->next_fd = fd + 1; +#if 1 + /* Sanity check */ + if (fdt->fd[fd] != NULL) { + printk(KERN_WARNING "get_unused_fd: slot %d not NULL!\n", fd); + fdt->fd[fd] = NULL; + } +#endif + error = fd; + +out: + spin_unlock(&files->file_lock); + put_files_struct(files); + return error; +} + +/* + * copied from fd_install + */ +static void task_fd_install( + struct task_struct *tsk, unsigned int fd, struct file *file) +{ + struct files_struct *files = get_files_struct(tsk); + struct fdtable *fdt; + + if (files == NULL) + return; + + spin_lock(&files->file_lock); + fdt = files_fdtable(files); + BUG_ON(fdt->fd[fd] != NULL); + rcu_assign_pointer(fdt->fd[fd], file); + spin_unlock(&files->file_lock); + put_files_struct(files); +} + +/* + * copied from __put_unused_fd in open.c + */ +static void __put_unused_fd(struct files_struct *files, unsigned int fd) +{ + struct fdtable *fdt = files_fdtable(files); + __FD_CLR(fd, fdt->open_fds); + if (fd < files->next_fd) + files->next_fd = fd; +} + +/* + * copied from sys_close + */ +static long task_close_fd(struct task_struct *tsk, unsigned int fd) +{ + struct file *filp; + struct files_struct *files = get_files_struct(tsk); + struct fdtable *fdt; + int retval; + + if (files == NULL) + return -ESRCH; + + spin_lock(&files->file_lock); + fdt = files_fdtable(files); + if (fd >= fdt->max_fds) + goto out_unlock; + filp = fdt->fd[fd]; + if (!filp) + goto out_unlock; + rcu_assign_pointer(fdt->fd[fd], NULL); + FD_CLR(fd, fdt->close_on_exec); + __put_unused_fd(files, fd); + spin_unlock(&files->file_lock); + retval = filp_close(filp, files); + + /* can't restart close syscall because file table entry was cleared */ + if (unlikely(retval == -ERESTARTSYS || + retval == -ERESTARTNOINTR || + retval == -ERESTARTNOHAND || + retval == -ERESTART_RESTARTBLOCK)) + retval = -EINTR; + + put_files_struct(files); + return retval; + +out_unlock: + spin_unlock(&files->file_lock); + put_files_struct(files); + return -EBADF; +} + +static void binder_set_nice(long nice) +{ + long min_nice; + if (can_nice(current, nice)) { + set_user_nice(current, nice); + return; + } + min_nice = 20 - current->signal->rlim[RLIMIT_NICE].rlim_cur; + if (binder_debug_mask & BINDER_DEBUG_PRIORITY_CAP) + printk(KERN_INFO "binder: %d: nice value %ld not allowed use " + "%ld instead\n", current->pid, nice, min_nice); + set_user_nice(current, min_nice); + if (min_nice < 20) + return; + binder_user_error("binder: %d RLIMIT_NICE not set\n", current->pid); +} + +static size_t binder_buffer_size( + struct binder_proc *proc, struct binder_buffer *buffer) +{ + if (list_is_last(&buffer->entry, &proc->buffers)) + return proc->buffer + proc->buffer_size - (void *)buffer->data; + else + return (size_t)list_entry(buffer->entry.next, + struct binder_buffer, entry) - (size_t)buffer->data; +} + +static void binder_insert_free_buffer( + struct binder_proc *proc, struct binder_buffer *new_buffer) +{ + struct rb_node **p = &proc->free_buffers.rb_node; + struct rb_node *parent = NULL; + struct binder_buffer *buffer; + size_t buffer_size; + size_t new_buffer_size; + + BUG_ON(!new_buffer->free); + + new_buffer_size = binder_buffer_size(proc, new_buffer); + + if (binder_debug_mask & BINDER_DEBUG_BUFFER_ALLOC) + printk(KERN_INFO "binder: %d: add free buffer, size %d, " + "at %p\n", proc->pid, new_buffer_size, new_buffer); + + while (*p) { + parent = *p; + buffer = rb_entry(parent, struct binder_buffer, rb_node); + BUG_ON(!buffer->free); + + buffer_size = binder_buffer_size(proc, buffer); + + if (new_buffer_size < buffer_size) + p = &parent->rb_left; + else + p = &parent->rb_right; + } + rb_link_node(&new_buffer->rb_node, parent, p); + rb_insert_color(&new_buffer->rb_node, &proc->free_buffers); +} + +static void binder_insert_allocated_buffer( + struct binder_proc *proc, struct binder_buffer *new_buffer) +{ + struct rb_node **p = &proc->allocated_buffers.rb_node; + struct rb_node *parent = NULL; + struct binder_buffer *buffer; + + BUG_ON(new_buffer->free); + + while (*p) { + parent = *p; + buffer = rb_entry(parent, struct binder_buffer, rb_node); + BUG_ON(buffer->free); + + if (new_buffer < buffer) + p = &parent->rb_left; + else if (new_buffer > buffer) + p = &parent->rb_right; + else + BUG(); + } + rb_link_node(&new_buffer->rb_node, parent, p); + rb_insert_color(&new_buffer->rb_node, &proc->allocated_buffers); +} + +static struct binder_buffer *binder_buffer_lookup( + struct binder_proc *proc, void __user *user_ptr) +{ + struct rb_node *n = proc->allocated_buffers.rb_node; + struct binder_buffer *buffer; + struct binder_buffer *kern_ptr; + + kern_ptr = user_ptr - proc->user_buffer_offset + - offsetof(struct binder_buffer, data); + + while (n) { + buffer = rb_entry(n, struct binder_buffer, rb_node); + BUG_ON(buffer->free); + + if (kern_ptr < buffer) + n = n->rb_left; + else if (kern_ptr > buffer) + n = n->rb_right; + else + return buffer; + } + return NULL; +} + +static int binder_update_page_range(struct binder_proc *proc, int allocate, + void *start, void *end, struct vm_area_struct *vma) +{ + void *page_addr; + unsigned long user_page_addr; + struct vm_struct tmp_area; + struct page **page; + struct mm_struct *mm; + + if (binder_debug_mask & BINDER_DEBUG_BUFFER_ALLOC) + printk(KERN_INFO "binder: %d: %s pages %p-%p\n", + proc->pid, allocate ? "allocate" : "free", start, end); + + if (end <= start) + return 0; + + if (vma) + mm = NULL; + else + mm = get_task_mm(proc->tsk); + + if (mm) { + down_write(&mm->mmap_sem); + vma = proc->vma; + } + + if (allocate == 0) + goto free_range; + + if (vma == NULL) { + printk(KERN_ERR "binder: %d: binder_alloc_buf failed to " + "map pages in userspace, no vma\n", proc->pid); + goto err_no_vma; + } + + for (page_addr = start; page_addr < end; page_addr += PAGE_SIZE) { + int ret; + struct page **page_array_ptr; + page = &proc->pages[(page_addr - proc->buffer) / PAGE_SIZE]; + + BUG_ON(*page); + *page = alloc_page(GFP_KERNEL | __GFP_ZERO); + if (*page == NULL) { + printk(KERN_ERR "binder: %d: binder_alloc_buf failed " + "for page at %p\n", proc->pid, page_addr); + goto err_alloc_page_failed; + } + tmp_area.addr = page_addr; + tmp_area.size = PAGE_SIZE + PAGE_SIZE /* guard page? */; + page_array_ptr = page; + ret = map_vm_area(&tmp_area, PAGE_KERNEL, &page_array_ptr); + if (ret) { + printk(KERN_ERR "binder: %d: binder_alloc_buf failed " + "to map page at %p in kernel\n", + proc->pid, page_addr); + goto err_map_kernel_failed; + } + user_page_addr = (size_t)page_addr + proc->user_buffer_offset; + ret = vm_insert_page(vma, user_page_addr, page[0]); + if (ret) { + printk(KERN_ERR "binder: %d: binder_alloc_buf failed " + "to map page at %lx in userspace\n", + proc->pid, user_page_addr); + goto err_vm_insert_page_failed; + } + /* vm_insert_page does not seem to increment the refcount */ + } + if (mm) { + up_write(&mm->mmap_sem); + mmput(mm); + } + return 0; + +free_range: + for (page_addr = end - PAGE_SIZE; page_addr >= start; + page_addr -= PAGE_SIZE) { + page = &proc->pages[(page_addr - proc->buffer) / PAGE_SIZE]; + if (vma) + zap_page_range(vma, (size_t)page_addr + + proc->user_buffer_offset, PAGE_SIZE, NULL); +err_vm_insert_page_failed: + unmap_kernel_range((unsigned long)page_addr, PAGE_SIZE); +err_map_kernel_failed: + __free_page(*page); + *page = NULL; +err_alloc_page_failed: + ; + } +err_no_vma: + if (mm) { + up_write(&mm->mmap_sem); + mmput(mm); + } + return -ENOMEM; +} + +static struct binder_buffer *binder_alloc_buf(struct binder_proc *proc, + size_t data_size, size_t offsets_size, int is_async) +{ + struct rb_node *n = proc->free_buffers.rb_node; + struct binder_buffer *buffer; + size_t buffer_size; + struct rb_node *best_fit = NULL; + void *has_page_addr; + void *end_page_addr; + size_t size; + + if (proc->vma == NULL) { + printk(KERN_ERR "binder: %d: binder_alloc_buf, no vma\n", + proc->pid); + return NULL; + } + + size = ALIGN(data_size, sizeof(void *)) + + ALIGN(offsets_size, sizeof(void *)); + + if (size < data_size || size < offsets_size) { + binder_user_error("binder: %d: got transaction with invalid " + "size %d-%d\n", proc->pid, data_size, offsets_size); + return NULL; + } + + if (is_async && + proc->free_async_space < size + sizeof(struct binder_buffer)) { + if (binder_debug_mask & BINDER_DEBUG_BUFFER_ALLOC) + printk(KERN_ERR "binder: %d: binder_alloc_buf size %d f" + "ailed, no async space left\n", proc->pid, size); + return NULL; + } + + while (n) { + buffer = rb_entry(n, struct binder_buffer, rb_node); + BUG_ON(!buffer->free); + buffer_size = binder_buffer_size(proc, buffer); + + if (size < buffer_size) { + best_fit = n; + n = n->rb_left; + } else if (size > buffer_size) + n = n->rb_right; + else { + best_fit = n; + break; + } + } + if (best_fit == NULL) { + printk(KERN_ERR "binder: %d: binder_alloc_buf size %d failed, " + "no address space\n", proc->pid, size); + return NULL; + } + if (n == NULL) { + buffer = rb_entry(best_fit, struct binder_buffer, rb_node); + buffer_size = binder_buffer_size(proc, buffer); + } + if (binder_debug_mask & BINDER_DEBUG_BUFFER_ALLOC) + printk(KERN_INFO "binder: %d: binder_alloc_buf size %d got buff" + "er %p size %d\n", proc->pid, size, buffer, buffer_size); + + has_page_addr = + (void *)(((size_t)buffer->data + buffer_size) & PAGE_MASK); + if (n == NULL) { + if (size + sizeof(struct binder_buffer) + 4 >= buffer_size) + buffer_size = size; /* no room for other buffers */ + else + buffer_size = size + sizeof(struct binder_buffer); + } + end_page_addr = (void *)PAGE_ALIGN((size_t)buffer->data + buffer_size); + if (end_page_addr > has_page_addr) + end_page_addr = has_page_addr; + if (binder_update_page_range(proc, 1, + (void *)PAGE_ALIGN((size_t)buffer->data), end_page_addr, NULL)) + return NULL; + + rb_erase(best_fit, &proc->free_buffers); + buffer->free = 0; + binder_insert_allocated_buffer(proc, buffer); + if (buffer_size != size) { + struct binder_buffer *new_buffer = (void *)buffer->data + size; + list_add(&new_buffer->entry, &buffer->entry); + new_buffer->free = 1; + binder_insert_free_buffer(proc, new_buffer); + } + if (binder_debug_mask & BINDER_DEBUG_BUFFER_ALLOC) + printk(KERN_INFO "binder: %d: binder_alloc_buf size %d got " + "%p\n", proc->pid, size, buffer); + buffer->data_size = data_size; + buffer->offsets_size = offsets_size; + buffer->async_transaction = is_async; + if (is_async) { + proc->free_async_space -= size + sizeof(struct binder_buffer); + if (binder_debug_mask & BINDER_DEBUG_BUFFER_ALLOC_ASYNC) + printk(KERN_INFO "binder: %d: binder_alloc_buf size %d " + "async free %d\n", proc->pid, size, + proc->free_async_space); + } + + return buffer; +} + +static void *buffer_start_page(struct binder_buffer *buffer) +{ + return (void *)((size_t)buffer & PAGE_MASK); +} + +static void *buffer_end_page(struct binder_buffer *buffer) +{ + return (void *)(((size_t)(buffer + 1) - 1) & PAGE_MASK); +} + +static void binder_delete_free_buffer( + struct binder_proc *proc, struct binder_buffer *buffer) +{ + struct binder_buffer *prev, *next = NULL; + int free_page_end = 1; + int free_page_start = 1; + + BUG_ON(proc->buffers.next == &buffer->entry); + prev = list_entry(buffer->entry.prev, struct binder_buffer, entry); + BUG_ON(!prev->free); + if (buffer_end_page(prev) == buffer_start_page(buffer)) { + free_page_start = 0; + if (buffer_end_page(prev) == buffer_end_page(buffer)) + free_page_end = 0; + if (binder_debug_mask & BINDER_DEBUG_BUFFER_ALLOC) + printk(KERN_INFO "binder: %d: merge free, buffer %p " + "share page with %p\n", proc->pid, buffer, prev); + } + + if (!list_is_last(&buffer->entry, &proc->buffers)) { + next = list_entry(buffer->entry.next, + struct binder_buffer, entry); + if (buffer_start_page(next) == buffer_end_page(buffer)) { + free_page_end = 0; + if (buffer_start_page(next) == + buffer_start_page(buffer)) + free_page_start = 0; + if (binder_debug_mask & BINDER_DEBUG_BUFFER_ALLOC) + printk(KERN_INFO "binder: %d: merge free, " + "buffer %p share page with %p\n", + proc->pid, buffer, prev); + } + } + list_del(&buffer->entry); + if (free_page_start || free_page_end) { + if (binder_debug_mask & BINDER_DEBUG_BUFFER_ALLOC) + printk(KERN_INFO "binder: %d: merge free, buffer %p do " + "not share page%s%s with with %p or %p\n", + proc->pid, buffer, free_page_start ? "" : " end", + free_page_end ? "" : " start", prev, next); + binder_update_page_range(proc, 0, free_page_start ? + buffer_start_page(buffer) : buffer_end_page(buffer), + (free_page_end ? buffer_end_page(buffer) : + buffer_start_page(buffer)) + PAGE_SIZE, NULL); + } +} + +static void binder_free_buf( + struct binder_proc *proc, struct binder_buffer *buffer) +{ + size_t size, buffer_size; + + buffer_size = binder_buffer_size(proc, buffer); + + size = ALIGN(buffer->data_size, sizeof(void *)) + + ALIGN(buffer->offsets_size, sizeof(void *)); + if (binder_debug_mask & BINDER_DEBUG_BUFFER_ALLOC) + printk(KERN_INFO "binder: %d: binder_free_buf %p size %d buffer" + "_size %d\n", proc->pid, buffer, size, buffer_size); + + BUG_ON(buffer->free); + BUG_ON(size > buffer_size); + BUG_ON(buffer->transaction != NULL); + BUG_ON((void *)buffer < proc->buffer); + BUG_ON((void *)buffer > proc->buffer + proc->buffer_size); + + if (buffer->async_transaction) { + proc->free_async_space += size + sizeof(struct binder_buffer); + if (binder_debug_mask & BINDER_DEBUG_BUFFER_ALLOC_ASYNC) + printk(KERN_INFO "binder: %d: binder_free_buf size %d " + "async free %d\n", proc->pid, size, + proc->free_async_space); + } + + binder_update_page_range(proc, 0, + (void *)PAGE_ALIGN((size_t)buffer->data), + (void *)(((size_t)buffer->data + buffer_size) & PAGE_MASK), + NULL); + rb_erase(&buffer->rb_node, &proc->allocated_buffers); + buffer->free = 1; + if (!list_is_last(&buffer->entry, &proc->buffers)) { + struct binder_buffer *next = list_entry(buffer->entry.next, + struct binder_buffer, entry); + if (next->free) { + rb_erase(&next->rb_node, &proc->free_buffers); + binder_delete_free_buffer(proc, next); + } + } + if (proc->buffers.next != &buffer->entry) { + struct binder_buffer *prev = list_entry(buffer->entry.prev, + struct binder_buffer, entry); + if (prev->free) { + binder_delete_free_buffer(proc, buffer); + rb_erase(&prev->rb_node, &proc->free_buffers); + buffer = prev; + } + } + binder_insert_free_buffer(proc, buffer); +} + +static struct binder_node * +binder_get_node(struct binder_proc *proc, void __user *ptr) +{ + struct rb_node *n = proc->nodes.rb_node; + struct binder_node *node; + + while (n) { + node = rb_entry(n, struct binder_node, rb_node); + + if (ptr < node->ptr) + n = n->rb_left; + else if (ptr > node->ptr) + n = n->rb_right; + else + return node; + } + return NULL; +} + +static struct binder_node * +binder_new_node(struct binder_proc *proc, void __user *ptr, void __user *cookie) +{ + struct rb_node **p = &proc->nodes.rb_node; + struct rb_node *parent = NULL; + struct binder_node *node; + + while (*p) { + parent = *p; + node = rb_entry(parent, struct binder_node, rb_node); + + if (ptr < node->ptr) + p = &(*p)->rb_left; + else if (ptr > node->ptr) + p = &(*p)->rb_right; + else + return NULL; + } + + node = kzalloc(sizeof(*node), GFP_KERNEL); + if (node == NULL) + return NULL; + binder_stats.obj_created[BINDER_STAT_NODE]++; + rb_link_node(&node->rb_node, parent, p); + rb_insert_color(&node->rb_node, &proc->nodes); + node->debug_id = ++binder_last_id; + node->proc = proc; + node->ptr = ptr; + node->cookie = cookie; + node->work.type = BINDER_WORK_NODE; + INIT_LIST_HEAD(&node->work.entry); + INIT_LIST_HEAD(&node->async_todo); + if (binder_debug_mask & BINDER_DEBUG_INTERNAL_REFS) + printk(KERN_INFO "binder: %d:%d node %d u%p c%p created\n", + proc->pid, current->pid, node->debug_id, + node->ptr, node->cookie); + return node; +} + +static int +binder_inc_node(struct binder_node *node, int strong, int internal, + struct list_head *target_list) +{ + if (strong) { + if (internal) { + if (target_list == NULL && + node->internal_strong_refs == 0 && + !(node == binder_context_mgr_node && + node->has_strong_ref)) { + printk(KERN_ERR "binder: invalid inc strong " + "node for %d\n", node->debug_id); + return -EINVAL; + } + node->internal_strong_refs++; + } else + node->local_strong_refs++; + if (!node->has_strong_ref && target_list) { + list_del_init(&node->work.entry); + list_add_tail(&node->work.entry, target_list); + } + } else { + if (!internal) + node->local_weak_refs++; + if (!node->has_weak_ref && list_empty(&node->work.entry)) { + if (target_list == NULL) { + printk(KERN_ERR "binder: invalid inc weak node " + "for %d\n", node->debug_id); + return -EINVAL; + } + list_add_tail(&node->work.entry, target_list); + } + } + return 0; +} + +static int +binder_dec_node(struct binder_node *node, int strong, int internal) +{ + if (strong) { + if (internal) + node->internal_strong_refs--; + else + node->local_strong_refs--; + if (node->local_strong_refs || node->internal_strong_refs) + return 0; + } else { + if (!internal) + node->local_weak_refs--; + if (node->local_weak_refs || !hlist_empty(&node->refs)) + return 0; + } + if (node->proc && (node->has_strong_ref || node->has_weak_ref)) { + if (list_empty(&node->work.entry)) { + list_add_tail(&node->work.entry, &node->proc->todo); + wake_up_interruptible(&node->proc->wait); + } + } else { + if (hlist_empty(&node->refs) && !node->local_strong_refs && + !node->local_weak_refs) { + list_del_init(&node->work.entry); + if (node->proc) { + rb_erase(&node->rb_node, &node->proc->nodes); + if (binder_debug_mask & BINDER_DEBUG_INTERNAL_REFS) + printk(KERN_INFO "binder: refless node %d deleted\n", node->debug_id); + } else { + hlist_del(&node->dead_node); + if (binder_debug_mask & BINDER_DEBUG_INTERNAL_REFS) + printk(KERN_INFO "binder: dead node %d deleted\n", node->debug_id); + } + kfree(node); + binder_stats.obj_deleted[BINDER_STAT_NODE]++; + } + } + + return 0; +} + + +static struct binder_ref * +binder_get_ref(struct binder_proc *proc, uint32_t desc) +{ + struct rb_node *n = proc->refs_by_desc.rb_node; + struct binder_ref *ref; + + while (n) { + ref = rb_entry(n, struct binder_ref, rb_node_desc); + + if (desc < ref->desc) + n = n->rb_left; + else if (desc > ref->desc) + n = n->rb_right; + else + return ref; + } + return NULL; +} + +static struct binder_ref * +binder_get_ref_for_node(struct binder_proc *proc, struct binder_node *node) +{ + struct rb_node *n; + struct rb_node **p = &proc->refs_by_node.rb_node; + struct rb_node *parent = NULL; + struct binder_ref *ref, *new_ref; + + while (*p) { + parent = *p; + ref = rb_entry(parent, struct binder_ref, rb_node_node); + + if (node < ref->node) + p = &(*p)->rb_left; + else if (node > ref->node) + p = &(*p)->rb_right; + else + return ref; + } + new_ref = kzalloc(sizeof(*ref), GFP_KERNEL); + if (new_ref == NULL) + return NULL; + binder_stats.obj_created[BINDER_STAT_REF]++; + new_ref->debug_id = ++binder_last_id; + new_ref->proc = proc; + new_ref->node = node; + rb_link_node(&new_ref->rb_node_node, parent, p); + rb_insert_color(&new_ref->rb_node_node, &proc->refs_by_node); + + new_ref->desc = (node == binder_context_mgr_node) ? 0 : 1; + for (n = rb_first(&proc->refs_by_desc); n != NULL; n = rb_next(n)) { + ref = rb_entry(n, struct binder_ref, rb_node_desc); + if (ref->desc > new_ref->desc) + break; + new_ref->desc = ref->desc + 1; + } + + p = &proc->refs_by_desc.rb_node; + while (*p) { + parent = *p; + ref = rb_entry(parent, struct binder_ref, rb_node_desc); + + if (new_ref->desc < ref->desc) + p = &(*p)->rb_left; + else if (new_ref->desc > ref->desc) + p = &(*p)->rb_right; + else + BUG(); + } + rb_link_node(&new_ref->rb_node_desc, parent, p); + rb_insert_color(&new_ref->rb_node_desc, &proc->refs_by_desc); + if (node) { + hlist_add_head(&new_ref->node_entry, &node->refs); + if (binder_debug_mask & BINDER_DEBUG_INTERNAL_REFS) + printk(KERN_INFO "binder: %d new ref %d desc %d for " + "node %d\n", proc->pid, new_ref->debug_id, + new_ref->desc, node->debug_id); + } else { + if (binder_debug_mask & BINDER_DEBUG_INTERNAL_REFS) + printk(KERN_INFO "binder: %d new ref %d desc %d for " + "dead node\n", proc->pid, new_ref->debug_id, + new_ref->desc); + } + return new_ref; +} + +static void +binder_delete_ref(struct binder_ref *ref) +{ + if (binder_debug_mask & BINDER_DEBUG_INTERNAL_REFS) + printk(KERN_INFO "binder: %d delete ref %d desc %d for " + "node %d\n", ref->proc->pid, ref->debug_id, + ref->desc, ref->node->debug_id); + rb_erase(&ref->rb_node_desc, &ref->proc->refs_by_desc); + rb_erase(&ref->rb_node_node, &ref->proc->refs_by_node); + if (ref->strong) + binder_dec_node(ref->node, 1, 1); + hlist_del(&ref->node_entry); + binder_dec_node(ref->node, 0, 1); + if (ref->death) { + if (binder_debug_mask & BINDER_DEBUG_DEAD_BINDER) + printk(KERN_INFO "binder: %d delete ref %d desc %d " + "has death notification\n", ref->proc->pid, + ref->debug_id, ref->desc); + list_del(&ref->death->work.entry); + kfree(ref->death); + binder_stats.obj_deleted[BINDER_STAT_DEATH]++; + } + kfree(ref); + binder_stats.obj_deleted[BINDER_STAT_REF]++; +} + +static int +binder_inc_ref( + struct binder_ref *ref, int strong, struct list_head *target_list) +{ + int ret; + if (strong) { + if (ref->strong == 0) { + ret = binder_inc_node(ref->node, 1, 1, target_list); + if (ret) + return ret; + } + ref->strong++; + } else { + if (ref->weak == 0) { + ret = binder_inc_node(ref->node, 0, 1, target_list); + if (ret) + return ret; + } + ref->weak++; + } + return 0; +} + + +static int +binder_dec_ref(struct binder_ref *ref, int strong) +{ + if (strong) { + if (ref->strong == 0) { + binder_user_error("binder: %d invalid dec strong, " + "ref %d desc %d s %d w %d\n", + ref->proc->pid, ref->debug_id, + ref->desc, ref->strong, ref->weak); + return -EINVAL; + } + ref->strong--; + if (ref->strong == 0) { + int ret; + ret = binder_dec_node(ref->node, strong, 1); + if (ret) + return ret; + } + } else { + if (ref->weak == 0) { + binder_user_error("binder: %d invalid dec weak, " + "ref %d desc %d s %d w %d\n", + ref->proc->pid, ref->debug_id, + ref->desc, ref->strong, ref->weak); + return -EINVAL; + } + ref->weak--; + } + if (ref->strong == 0 && ref->weak == 0) + binder_delete_ref(ref); + return 0; +} + +static void +binder_pop_transaction( + struct binder_thread *target_thread, struct binder_transaction *t) +{ + if (target_thread) { + BUG_ON(target_thread->transaction_stack != t); + BUG_ON(target_thread->transaction_stack->from != target_thread); + target_thread->transaction_stack = + target_thread->transaction_stack->from_parent; + t->from = NULL; + } + t->need_reply = 0; + if (t->buffer) + t->buffer->transaction = NULL; + kfree(t); + binder_stats.obj_deleted[BINDER_STAT_TRANSACTION]++; +} + +static void +binder_send_failed_reply(struct binder_transaction *t, uint32_t error_code) +{ + struct binder_thread *target_thread; + BUG_ON(t->flags & TF_ONE_WAY); + while (1) { + target_thread = t->from; + if (target_thread) { + if (target_thread->return_error != BR_OK && + target_thread->return_error2 == BR_OK) { + target_thread->return_error2 = + target_thread->return_error; + target_thread->return_error = BR_OK; + } + if (target_thread->return_error == BR_OK) { + if (binder_debug_mask & BINDER_DEBUG_FAILED_TRANSACTION) + printk(KERN_INFO "binder: send failed reply for transaction %d to %d:%d\n", + t->debug_id, target_thread->proc->pid, target_thread->pid); + + binder_pop_transaction(target_thread, t); + target_thread->return_error = error_code; + wake_up_interruptible(&target_thread->wait); + } else { + printk(KERN_ERR "binder: reply failed, target " + "thread, %d:%d, has error code %d " + "already\n", target_thread->proc->pid, + target_thread->pid, + target_thread->return_error); + } + return; + } else { + struct binder_transaction *next = t->from_parent; + + if (binder_debug_mask & BINDER_DEBUG_FAILED_TRANSACTION) + printk(KERN_INFO "binder: send failed reply " + "for transaction %d, target dead\n", + t->debug_id); + + binder_pop_transaction(target_thread, t); + if (next == NULL) { + if (binder_debug_mask & BINDER_DEBUG_DEAD_BINDER) + printk(KERN_INFO "binder: reply failed," + " no target thread at root\n"); + return; + } + t = next; + if (binder_debug_mask & BINDER_DEBUG_DEAD_BINDER) + printk(KERN_INFO "binder: reply failed, no targ" + "et thread -- retry %d\n", t->debug_id); + } + } +} + +static void +binder_transaction_buffer_release(struct binder_proc *proc, + struct binder_buffer *buffer, size_t *failed_at); + +static void +binder_transaction(struct binder_proc *proc, struct binder_thread *thread, + struct binder_transaction_data *tr, int reply) +{ + struct binder_transaction *t; + struct binder_work *tcomplete; + size_t *offp, *off_end; + struct binder_proc *target_proc; + struct binder_thread *target_thread = NULL; + struct binder_node *target_node = NULL; + struct list_head *target_list; + wait_queue_head_t *target_wait; + struct binder_transaction *in_reply_to = NULL; + struct binder_transaction_log_entry *e; + uint32_t return_error; + + e = binder_transaction_log_add(&binder_transaction_log); + e->call_type = reply ? 2 : !!(tr->flags & TF_ONE_WAY); + e->from_proc = proc->pid; + e->from_thread = thread->pid; + e->target_handle = tr->target.handle; + e->data_size = tr->data_size; + e->offsets_size = tr->offsets_size; + + if (reply) { + in_reply_to = thread->transaction_stack; + if (in_reply_to == NULL) { + binder_user_error("binder: %d:%d got reply transaction " + "with no transaction stack\n", + proc->pid, thread->pid); + return_error = BR_FAILED_REPLY; + goto err_empty_call_stack; + } + binder_set_nice(in_reply_to->saved_priority); + if (in_reply_to->to_thread != thread) { + binder_user_error("binder: %d:%d got reply transaction " + "with bad transaction stack," + " transaction %d has target %d:%d\n", + proc->pid, thread->pid, in_reply_to->debug_id, + in_reply_to->to_proc ? + in_reply_to->to_proc->pid : 0, + in_reply_to->to_thread ? + in_reply_to->to_thread->pid : 0); + return_error = BR_FAILED_REPLY; + in_reply_to = NULL; + goto err_bad_call_stack; + } + thread->transaction_stack = in_reply_to->to_parent; + target_thread = in_reply_to->from; + if (target_thread == NULL) { + return_error = BR_DEAD_REPLY; + goto err_dead_binder; + } + if (target_thread->transaction_stack != in_reply_to) { + binder_user_error("binder: %d:%d got reply transaction " + "with bad target transaction stack %d, " + "expected %d\n", + proc->pid, thread->pid, + target_thread->transaction_stack ? + target_thread->transaction_stack->debug_id : 0, + in_reply_to->debug_id); + return_error = BR_FAILED_REPLY; + in_reply_to = NULL; + target_thread = NULL; + goto err_dead_binder; + } + target_proc = target_thread->proc; + } else { + if (tr->target.handle) { + struct binder_ref *ref; + ref = binder_get_ref(proc, tr->target.handle); + if (ref == NULL) { + binder_user_error("binder: %d:%d got " + "transaction to invalid handle\n", + proc->pid, thread->pid); + return_error = BR_FAILED_REPLY; + goto err_invalid_target_handle; + } + target_node = ref->node; + } else { + target_node = binder_context_mgr_node; + if (target_node == NULL) { + return_error = BR_DEAD_REPLY; + goto err_no_context_mgr_node; + } + } + e->to_node = target_node->debug_id; + target_proc = target_node->proc; + if (target_proc == NULL) { + return_error = BR_DEAD_REPLY; + goto err_dead_binder; + } + if (!(tr->flags & TF_ONE_WAY) && thread->transaction_stack) { + struct binder_transaction *tmp; + tmp = thread->transaction_stack; + while (tmp) { + if (tmp->from && tmp->from->proc == target_proc) + target_thread = tmp->from; + tmp = tmp->from_parent; + } + } + } + if (target_thread) { + e->to_thread = target_thread->pid; + target_list = &target_thread->todo; + target_wait = &target_thread->wait; + } else { + target_list = &target_proc->todo; + target_wait = &target_proc->wait; + } + e->to_proc = target_proc->pid; + + /* TODO: reuse incoming transaction for reply */ + t = kzalloc(sizeof(*t), GFP_KERNEL); + if (t == NULL) { + return_error = BR_FAILED_REPLY; + goto err_alloc_t_failed; + } + binder_stats.obj_created[BINDER_STAT_TRANSACTION]++; + + tcomplete = kzalloc(sizeof(*tcomplete), GFP_KERNEL); + if (tcomplete == NULL) { + return_error = BR_FAILED_REPLY; + goto err_alloc_tcomplete_failed; + } + binder_stats.obj_created[BINDER_STAT_TRANSACTION_COMPLETE]++; + + t->debug_id = ++binder_last_id; + e->debug_id = t->debug_id; + + if (binder_debug_mask & BINDER_DEBUG_TRANSACTION) { + if (reply) + printk(KERN_INFO "binder: %d:%d BC_REPLY %d -> %d:%d, " + "data %p-%p size %d-%d\n", + proc->pid, thread->pid, t->debug_id, + target_proc->pid, target_thread->pid, + tr->data.ptr.buffer, tr->data.ptr.offsets, + tr->data_size, tr->offsets_size); + else + printk(KERN_INFO "binder: %d:%d BC_TRANSACTION %d -> " + "%d - node %d, data %p-%p size %d-%d\n", + proc->pid, thread->pid, t->debug_id, + target_proc->pid, target_node->debug_id, + tr->data.ptr.buffer, tr->data.ptr.offsets, + tr->data_size, tr->offsets_size); + } + + if (!reply && !(tr->flags & TF_ONE_WAY)) + t->from = thread; + else + t->from = NULL; + t->sender_euid = proc->tsk->euid; + t->to_proc = target_proc; + t->to_thread = target_thread; + t->code = tr->code; + t->flags = tr->flags; + t->priority = task_nice(current); + t->buffer = binder_alloc_buf(target_proc, tr->data_size, + tr->offsets_size, !reply && (t->flags & TF_ONE_WAY)); + if (t->buffer == NULL) { + return_error = BR_FAILED_REPLY; + goto err_binder_alloc_buf_failed; + } + t->buffer->allow_user_free = 0; + t->buffer->debug_id = t->debug_id; + t->buffer->transaction = t; + t->buffer->target_node = target_node; + if (target_node) + binder_inc_node(target_node, 1, 0, NULL); + + offp = (size_t *)(t->buffer->data + ALIGN(tr->data_size, sizeof(void *))); + + if (copy_from_user(t->buffer->data, tr->data.ptr.buffer, tr->data_size)) { + binder_user_error("binder: %d:%d got transaction with invalid " + "data ptr\n", proc->pid, thread->pid); + return_error = BR_FAILED_REPLY; + goto err_copy_data_failed; + } + if (copy_from_user(offp, tr->data.ptr.offsets, tr->offsets_size)) { + binder_user_error("binder: %d:%d got transaction with invalid " + "offsets ptr\n", proc->pid, thread->pid); + return_error = BR_FAILED_REPLY; + goto err_copy_data_failed; + } + off_end = (void *)offp + tr->offsets_size; + for (; offp < off_end; offp++) { + struct flat_binder_object *fp; + if (*offp > t->buffer->data_size - sizeof(*fp)) { + binder_user_error("binder: %d:%d got transaction with " + "invalid offset, %d\n", + proc->pid, thread->pid, *offp); + return_error = BR_FAILED_REPLY; + goto err_bad_offset; + } + fp = (struct flat_binder_object *)(t->buffer->data + *offp); + switch (fp->type) { + case BINDER_TYPE_BINDER: + case BINDER_TYPE_WEAK_BINDER: { + struct binder_ref *ref; + struct binder_node *node = binder_get_node(proc, fp->binder); + if (node == NULL) { + node = binder_new_node(proc, fp->binder, fp->cookie); + if (node == NULL) { + return_error = BR_FAILED_REPLY; + goto err_binder_new_node_failed; + } + node->min_priority = fp->flags & FLAT_BINDER_FLAG_PRIORITY_MASK; + node->accept_fds = !!(fp->flags & FLAT_BINDER_FLAG_ACCEPTS_FDS); + } + if (fp->cookie != node->cookie) { + binder_user_error("binder: %d:%d sending u%p " + "node %d, cookie mismatch %p != %p\n", + proc->pid, thread->pid, + fp->binder, node->debug_id, + fp->cookie, node->cookie); + goto err_binder_get_ref_for_node_failed; + } + ref = binder_get_ref_for_node(target_proc, node); + if (ref == NULL) { + return_error = BR_FAILED_REPLY; + goto err_binder_get_ref_for_node_failed; + } + if (fp->type == BINDER_TYPE_BINDER) + fp->type = BINDER_TYPE_HANDLE; + else + fp->type = BINDER_TYPE_WEAK_HANDLE; + fp->handle = ref->desc; + binder_inc_ref(ref, fp->type == BINDER_TYPE_HANDLE, &thread->todo); + if (binder_debug_mask & BINDER_DEBUG_TRANSACTION) + printk(KERN_INFO " node %d u%p -> ref %d desc %d\n", + node->debug_id, node->ptr, ref->debug_id, ref->desc); + } break; + case BINDER_TYPE_HANDLE: + case BINDER_TYPE_WEAK_HANDLE: { + struct binder_ref *ref = binder_get_ref(proc, fp->handle); + if (ref == NULL) { + binder_user_error("binder: %d:%d got " + "transaction with invalid " + "handle, %ld\n", proc->pid, + thread->pid, fp->handle); + return_error = BR_FAILED_REPLY; + goto err_binder_get_ref_failed; + } + if (ref->node->proc == target_proc) { + if (fp->type == BINDER_TYPE_HANDLE) + fp->type = BINDER_TYPE_BINDER; + else + fp->type = BINDER_TYPE_WEAK_BINDER; + fp->binder = ref->node->ptr; + fp->cookie = ref->node->cookie; + binder_inc_node(ref->node, fp->type == BINDER_TYPE_BINDER, 0, NULL); + if (binder_debug_mask & BINDER_DEBUG_TRANSACTION) + printk(KERN_INFO " ref %d desc %d -> node %d u%p\n", + ref->debug_id, ref->desc, ref->node->debug_id, ref->node->ptr); + } else { + struct binder_ref *new_ref; + new_ref = binder_get_ref_for_node(target_proc, ref->node); + if (new_ref == NULL) { + return_error = BR_FAILED_REPLY; + goto err_binder_get_ref_for_node_failed; + } + fp->handle = new_ref->desc; + binder_inc_ref(new_ref, fp->type == BINDER_TYPE_HANDLE, NULL); + if (binder_debug_mask & BINDER_DEBUG_TRANSACTION) + printk(KERN_INFO " ref %d desc %d -> ref %d desc %d (node %d)\n", + ref->debug_id, ref->desc, new_ref->debug_id, new_ref->desc, ref->node->debug_id); + } + } break; + + case BINDER_TYPE_FD: { + int target_fd; + struct file *file; + + if (reply) { + if (!(in_reply_to->flags & TF_ACCEPT_FDS)) { + binder_user_error("binder: %d:%d got reply with fd, %ld, but target does not allow fds\n", + proc->pid, thread->pid, fp->handle); + return_error = BR_FAILED_REPLY; + goto err_fd_not_allowed; + } + } else if (!target_node->accept_fds) { + binder_user_error("binder: %d:%d got transaction with fd, %ld, but target does not allow fds\n", + proc->pid, thread->pid, fp->handle); + return_error = BR_FAILED_REPLY; + goto err_fd_not_allowed; + } + + file = fget(fp->handle); + if (file == NULL) { + binder_user_error("binder: %d:%d got transaction with invalid fd, %ld\n", + proc->pid, thread->pid, fp->handle); + return_error = BR_FAILED_REPLY; + goto err_fget_failed; + } + target_fd = task_get_unused_fd_flags(target_proc->tsk, O_CLOEXEC); + if (target_fd < 0) { + fput(file); + return_error = BR_FAILED_REPLY; + goto err_get_unused_fd_failed; + } + task_fd_install(target_proc->tsk, target_fd, file); + if (binder_debug_mask & BINDER_DEBUG_TRANSACTION) + printk(KERN_INFO " fd %ld -> %d\n", fp->handle, target_fd); + /* TODO: fput? */ + fp->handle = target_fd; + } break; + + default: + binder_user_error("binder: %d:%d got transactio" + "n with invalid object type, %lx\n", + proc->pid, thread->pid, fp->type); + return_error = BR_FAILED_REPLY; + goto err_bad_object_type; + } + } + if (reply) { + BUG_ON(t->buffer->async_transaction != 0); + binder_pop_transaction(target_thread, in_reply_to); + } else if (!(t->flags & TF_ONE_WAY)) { + BUG_ON(t->buffer->async_transaction != 0); + t->need_reply = 1; + t->from_parent = thread->transaction_stack; + thread->transaction_stack = t; + } else { + BUG_ON(target_node == NULL); + BUG_ON(t->buffer->async_transaction != 1); + if (target_node->has_async_transaction) { + target_list = &target_node->async_todo; + target_wait = NULL; + } else + target_node->has_async_transaction = 1; + } + t->work.type = BINDER_WORK_TRANSACTION; + list_add_tail(&t->work.entry, target_list); + tcomplete->type = BINDER_WORK_TRANSACTION_COMPLETE; + list_add_tail(&tcomplete->entry, &thread->todo); + if (target_wait) + wake_up_interruptible(target_wait); + return; + +err_get_unused_fd_failed: +err_fget_failed: +err_fd_not_allowed: +err_binder_get_ref_for_node_failed: +err_binder_get_ref_failed: +err_binder_new_node_failed: +err_bad_object_type: +err_bad_offset: +err_copy_data_failed: + binder_transaction_buffer_release(target_proc, t->buffer, offp); + t->buffer->transaction = NULL; + binder_free_buf(target_proc, t->buffer); +err_binder_alloc_buf_failed: + kfree(tcomplete); + binder_stats.obj_deleted[BINDER_STAT_TRANSACTION_COMPLETE]++; +err_alloc_tcomplete_failed: + kfree(t); + binder_stats.obj_deleted[BINDER_STAT_TRANSACTION]++; +err_alloc_t_failed: +err_bad_call_stack: +err_empty_call_stack: +err_dead_binder: +err_invalid_target_handle: +err_no_context_mgr_node: + if (binder_debug_mask & BINDER_DEBUG_FAILED_TRANSACTION) + printk(KERN_INFO "binder: %d:%d transaction failed %d, size %d-%d\n", + proc->pid, thread->pid, return_error, + tr->data_size, tr->offsets_size); + + { + struct binder_transaction_log_entry *fe; + fe = binder_transaction_log_add(&binder_transaction_log_failed); + *fe = *e; + } + + BUG_ON(thread->return_error != BR_OK); + if (in_reply_to) { + thread->return_error = BR_TRANSACTION_COMPLETE; + binder_send_failed_reply(in_reply_to, return_error); + } else + thread->return_error = return_error; +} + +static void +binder_transaction_buffer_release(struct binder_proc *proc, struct binder_buffer *buffer, size_t *failed_at) +{ + size_t *offp, *off_end; + int debug_id = buffer->debug_id; + + if (binder_debug_mask & BINDER_DEBUG_TRANSACTION) + printk(KERN_INFO "binder: %d buffer release %d, size %d-%d, failed at %p\n", + proc->pid, buffer->debug_id, + buffer->data_size, buffer->offsets_size, failed_at); + + if (buffer->target_node) + binder_dec_node(buffer->target_node, 1, 0); + + offp = (size_t *)(buffer->data + ALIGN(buffer->data_size, sizeof(void *))); + if (failed_at) + off_end = failed_at; + else + off_end = (void *)offp + buffer->offsets_size; + for (; offp < off_end; offp++) { + struct flat_binder_object *fp; + if (*offp > buffer->data_size - sizeof(*fp)) { + printk(KERN_ERR "binder: transaction release %d bad offset %d, size %d\n", debug_id, *offp, buffer->data_size); + continue; + } + fp = (struct flat_binder_object *)(buffer->data + *offp); + switch (fp->type) { + case BINDER_TYPE_BINDER: + case BINDER_TYPE_WEAK_BINDER: { + struct binder_node *node = binder_get_node(proc, fp->binder); + if (node == NULL) { + printk(KERN_ERR "binder: transaction release %d bad node %p\n", debug_id, fp->binder); + break; + } + if (binder_debug_mask & BINDER_DEBUG_TRANSACTION) + printk(KERN_INFO " node %d u%p\n", + node->debug_id, node->ptr); + binder_dec_node(node, fp->type == BINDER_TYPE_BINDER, 0); + } break; + case BINDER_TYPE_HANDLE: + case BINDER_TYPE_WEAK_HANDLE: { + struct binder_ref *ref = binder_get_ref(proc, fp->handle); + if (ref == NULL) { + printk(KERN_ERR "binder: transaction release %d bad handle %ld\n", debug_id, fp->handle); + break; + } + if (binder_debug_mask & BINDER_DEBUG_TRANSACTION) + printk(KERN_INFO " ref %d desc %d (node %d)\n", + ref->debug_id, ref->desc, ref->node->debug_id); + binder_dec_ref(ref, fp->type == BINDER_TYPE_HANDLE); + } break; + + case BINDER_TYPE_FD: + if (binder_debug_mask & BINDER_DEBUG_TRANSACTION) + printk(KERN_INFO " fd %ld\n", fp->handle); + if (failed_at) + task_close_fd(proc->tsk, fp->handle); + break; + + default: + printk(KERN_ERR "binder: transaction release %d bad object type %lx\n", debug_id, fp->type); + break; + } + } +} + +int +binder_thread_write(struct binder_proc *proc, struct binder_thread *thread, + void __user *buffer, int size, signed long *consumed) +{ + uint32_t cmd; + void __user *ptr = buffer + *consumed; + void __user *end = buffer + size; + + while (ptr < end && thread->return_error == BR_OK) { + if (get_user(cmd, (uint32_t __user *)ptr)) + return -EFAULT; + ptr += sizeof(uint32_t); + if (_IOC_NR(cmd) < ARRAY_SIZE(binder_stats.bc)) { + binder_stats.bc[_IOC_NR(cmd)]++; + proc->stats.bc[_IOC_NR(cmd)]++; + thread->stats.bc[_IOC_NR(cmd)]++; + } + switch (cmd) { + case BC_INCREFS: + case BC_ACQUIRE: + case BC_RELEASE: + case BC_DECREFS: { + uint32_t target; + struct binder_ref *ref; + const char *debug_string; + + if (get_user(target, (uint32_t __user *)ptr)) + return -EFAULT; + ptr += sizeof(uint32_t); + if (target == 0 && binder_context_mgr_node && + (cmd == BC_INCREFS || cmd == BC_ACQUIRE)) { + ref = binder_get_ref_for_node(proc, + binder_context_mgr_node); + if (ref->desc != target) { + binder_user_error("binder: %d:" + "%d tried to acquire " + "reference to desc 0, " + "got %d instead\n", + proc->pid, thread->pid, + ref->desc); + } + } else + ref = binder_get_ref(proc, target); + if (ref == NULL) { + binder_user_error("binder: %d:%d refcou" + "nt change on invalid ref %d\n", + proc->pid, thread->pid, target); + break; + } + switch (cmd) { + case BC_INCREFS: + debug_string = "IncRefs"; + binder_inc_ref(ref, 0, NULL); + break; + case BC_ACQUIRE: + debug_string = "Acquire"; + binder_inc_ref(ref, 1, NULL); + break; + case BC_RELEASE: + debug_string = "Release"; + binder_dec_ref(ref, 1); + break; + case BC_DECREFS: + default: + debug_string = "DecRefs"; + binder_dec_ref(ref, 0); + break; + } + if (binder_debug_mask & BINDER_DEBUG_USER_REFS) + printk(KERN_INFO "binder: %d:%d %s ref %d desc %d s %d w %d for node %d\n", + proc->pid, thread->pid, debug_string, ref->debug_id, ref->desc, ref->strong, ref->weak, ref->node->debug_id); + break; + } + case BC_INCREFS_DONE: + case BC_ACQUIRE_DONE: { + void __user *node_ptr; + void *cookie; + struct binder_node *node; + + if (get_user(node_ptr, (void * __user *)ptr)) + return -EFAULT; + ptr += sizeof(void *); + if (get_user(cookie, (void * __user *)ptr)) + return -EFAULT; + ptr += sizeof(void *); + node = binder_get_node(proc, node_ptr); + if (node == NULL) { + binder_user_error("binder: %d:%d " + "%s u%p no match\n", + proc->pid, thread->pid, + cmd == BC_INCREFS_DONE ? + "BC_INCREFS_DONE" : + "BC_ACQUIRE_DONE", + node_ptr); + break; + } + if (cookie != node->cookie) { + binder_user_error("binder: %d:%d %s u%p node %d" + " cookie mismatch %p != %p\n", + proc->pid, thread->pid, + cmd == BC_INCREFS_DONE ? + "BC_INCREFS_DONE" : "BC_ACQUIRE_DONE", + node_ptr, node->debug_id, + cookie, node->cookie); + break; + } + if (cmd == BC_ACQUIRE_DONE) { + if (node->pending_strong_ref == 0) { + binder_user_error("binder: %d:%d " + "BC_ACQUIRE_DONE node %d has " + "no pending acquire request\n", + proc->pid, thread->pid, + node->debug_id); + break; + } + node->pending_strong_ref = 0; + } else { + if (node->pending_weak_ref == 0) { + binder_user_error("binder: %d:%d " + "BC_INCREFS_DONE node %d has " + "no pending increfs request\n", + proc->pid, thread->pid, + node->debug_id); + break; + } + node->pending_weak_ref = 0; + } + binder_dec_node(node, cmd == BC_ACQUIRE_DONE, 0); + if (binder_debug_mask & BINDER_DEBUG_USER_REFS) + printk(KERN_INFO "binder: %d:%d %s node %d ls %d lw %d\n", + proc->pid, thread->pid, cmd == BC_INCREFS_DONE ? "BC_INCREFS_DONE" : "BC_ACQUIRE_DONE", node->debug_id, node->local_strong_refs, node->local_weak_refs); + break; + } + case BC_ATTEMPT_ACQUIRE: + printk(KERN_ERR "binder: BC_ATTEMPT_ACQUIRE not supported\n"); + return -EINVAL; + case BC_ACQUIRE_RESULT: + printk(KERN_ERR "binder: BC_ACQUIRE_RESULT not supported\n"); + return -EINVAL; + + case BC_FREE_BUFFER: { + void __user *data_ptr; + struct binder_buffer *buffer; + + if (get_user(data_ptr, (void * __user *)ptr)) + return -EFAULT; + ptr += sizeof(void *); + + buffer = binder_buffer_lookup(proc, data_ptr); + if (buffer == NULL) { + binder_user_error("binder: %d:%d " + "BC_FREE_BUFFER u%p no match\n", + proc->pid, thread->pid, data_ptr); + break; + } + if (!buffer->allow_user_free) { + binder_user_error("binder: %d:%d " + "BC_FREE_BUFFER u%p matched " + "unreturned buffer\n", + proc->pid, thread->pid, data_ptr); + break; + } + if (binder_debug_mask & BINDER_DEBUG_FREE_BUFFER) + printk(KERN_INFO "binder: %d:%d BC_FREE_BUFFER u%p found buffer %d for %s transaction\n", + proc->pid, thread->pid, data_ptr, buffer->debug_id, + buffer->transaction ? "active" : "finished"); + + if (buffer->transaction) { + buffer->transaction->buffer = NULL; + buffer->transaction = NULL; + } + if (buffer->async_transaction && buffer->target_node) { + BUG_ON(!buffer->target_node->has_async_transaction); + if (list_empty(&buffer->target_node->async_todo)) + buffer->target_node->has_async_transaction = 0; + else + list_move_tail(buffer->target_node->async_todo.next, &thread->todo); + } + binder_transaction_buffer_release(proc, buffer, NULL); + binder_free_buf(proc, buffer); + break; + } + + case BC_TRANSACTION: + case BC_REPLY: { + struct binder_transaction_data tr; + + if (copy_from_user(&tr, ptr, sizeof(tr))) + return -EFAULT; + ptr += sizeof(tr); + binder_transaction(proc, thread, &tr, cmd == BC_REPLY); + break; + } + + case BC_REGISTER_LOOPER: + if (binder_debug_mask & BINDER_DEBUG_THREADS) + printk(KERN_INFO "binder: %d:%d BC_REGISTER_LOOPER\n", + proc->pid, thread->pid); + if (thread->looper & BINDER_LOOPER_STATE_ENTERED) { + thread->looper |= BINDER_LOOPER_STATE_INVALID; + binder_user_error("binder: %d:%d ERROR:" + " BC_REGISTER_LOOPER called " + "after BC_ENTER_LOOPER\n", + proc->pid, thread->pid); + } else if (proc->requested_threads == 0) { + thread->looper |= BINDER_LOOPER_STATE_INVALID; + binder_user_error("binder: %d:%d ERROR:" + " BC_REGISTER_LOOPER called " + "without request\n", + proc->pid, thread->pid); + } else { + proc->requested_threads--; + proc->requested_threads_started++; + } + thread->looper |= BINDER_LOOPER_STATE_REGISTERED; + break; + case BC_ENTER_LOOPER: + if (binder_debug_mask & BINDER_DEBUG_THREADS) + printk(KERN_INFO "binder: %d:%d BC_ENTER_LOOPER\n", + proc->pid, thread->pid); + if (thread->looper & BINDER_LOOPER_STATE_REGISTERED) { + thread->looper |= BINDER_LOOPER_STATE_INVALID; + binder_user_error("binder: %d:%d ERROR:" + " BC_ENTER_LOOPER called after " + "BC_REGISTER_LOOPER\n", + proc->pid, thread->pid); + } + thread->looper |= BINDER_LOOPER_STATE_ENTERED; + break; + case BC_EXIT_LOOPER: + if (binder_debug_mask & BINDER_DEBUG_THREADS) + printk(KERN_INFO "binder: %d:%d BC_EXIT_LOOPER\n", + proc->pid, thread->pid); + thread->looper |= BINDER_LOOPER_STATE_EXITED; + break; + + case BC_REQUEST_DEATH_NOTIFICATION: + case BC_CLEAR_DEATH_NOTIFICATION: { + uint32_t target; + void __user *cookie; + struct binder_ref *ref; + struct binder_ref_death *death; + + if (get_user(target, (uint32_t __user *)ptr)) + return -EFAULT; + ptr += sizeof(uint32_t); + if (get_user(cookie, (void __user * __user *)ptr)) + return -EFAULT; + ptr += sizeof(void *); + ref = binder_get_ref(proc, target); + if (ref == NULL) { + binder_user_error("binder: %d:%d %s " + "invalid ref %d\n", + proc->pid, thread->pid, + cmd == BC_REQUEST_DEATH_NOTIFICATION ? + "BC_REQUEST_DEATH_NOTIFICATION" : + "BC_CLEAR_DEATH_NOTIFICATION", + target); + break; + } + + if (binder_debug_mask & BINDER_DEBUG_DEATH_NOTIFICATION) + printk(KERN_INFO "binder: %d:%d %s %p ref %d desc %d s %d w %d for node %d\n", + proc->pid, thread->pid, + cmd == BC_REQUEST_DEATH_NOTIFICATION ? + "BC_REQUEST_DEATH_NOTIFICATION" : + "BC_CLEAR_DEATH_NOTIFICATION", + cookie, ref->debug_id, ref->desc, + ref->strong, ref->weak, ref->node->debug_id); + + if (cmd == BC_REQUEST_DEATH_NOTIFICATION) { + if (ref->death) { + binder_user_error("binder: %d:%" + "d BC_REQUEST_DEATH_NOTI" + "FICATION death notific" + "ation already set\n", + proc->pid, thread->pid); + break; + } + death = kzalloc(sizeof(*death), GFP_KERNEL); + if (death == NULL) { + thread->return_error = BR_ERROR; + if (binder_debug_mask & BINDER_DEBUG_FAILED_TRANSACTION) + printk(KERN_INFO "binder: %d:%d " + "BC_REQUEST_DEATH_NOTIFICATION failed\n", + proc->pid, thread->pid); + break; + } + binder_stats.obj_created[BINDER_STAT_DEATH]++; + INIT_LIST_HEAD(&death->work.entry); + death->cookie = cookie; + ref->death = death; + if (ref->node->proc == NULL) { + ref->death->work.type = BINDER_WORK_DEAD_BINDER; + if (thread->looper & (BINDER_LOOPER_STATE_REGISTERED | BINDER_LOOPER_STATE_ENTERED)) { + list_add_tail(&ref->death->work.entry, &thread->todo); + } else { + list_add_tail(&ref->death->work.entry, &proc->todo); + wake_up_interruptible(&proc->wait); + } + } + } else { + if (ref->death == NULL) { + binder_user_error("binder: %d:%" + "d BC_CLEAR_DEATH_NOTIFI" + "CATION death notificat" + "ion not active\n", + proc->pid, thread->pid); + break; + } + death = ref->death; + if (death->cookie != cookie) { + binder_user_error("binder: %d:%" + "d BC_CLEAR_DEATH_NOTIFI" + "CATION death notificat" + "ion cookie mismatch " + "%p != %p\n", + proc->pid, thread->pid, + death->cookie, cookie); + break; + } + ref->death = NULL; + if (list_empty(&death->work.entry)) { + death->work.type = BINDER_WORK_CLEAR_DEATH_NOTIFICATION; + if (thread->looper & (BINDER_LOOPER_STATE_REGISTERED | BINDER_LOOPER_STATE_ENTERED)) { + list_add_tail(&death->work.entry, &thread->todo); + } else { + list_add_tail(&death->work.entry, &proc->todo); + wake_up_interruptible(&proc->wait); + } + } else { + BUG_ON(death->work.type != BINDER_WORK_DEAD_BINDER); + death->work.type = BINDER_WORK_DEAD_BINDER_AND_CLEAR; + } + } + } break; + case BC_DEAD_BINDER_DONE: { + struct binder_work *w; + void __user *cookie; + struct binder_ref_death *death = NULL; + if (get_user(cookie, (void __user * __user *)ptr)) + return -EFAULT; + + ptr += sizeof(void *); + list_for_each_entry(w, &proc->delivered_death, entry) { + struct binder_ref_death *tmp_death = container_of(w, struct binder_ref_death, work); + if (tmp_death->cookie == cookie) { + death = tmp_death; + break; + } + } + if (binder_debug_mask & BINDER_DEBUG_DEAD_BINDER) + printk(KERN_INFO "binder: %d:%d BC_DEAD_BINDER_DONE %p found %p\n", + proc->pid, thread->pid, cookie, death); + if (death == NULL) { + binder_user_error("binder: %d:%d BC_DEAD" + "_BINDER_DONE %p not found\n", + proc->pid, thread->pid, cookie); + break; + } + + list_del_init(&death->work.entry); + if (death->work.type == BINDER_WORK_DEAD_BINDER_AND_CLEAR) { + death->work.type = BINDER_WORK_CLEAR_DEATH_NOTIFICATION; + if (thread->looper & (BINDER_LOOPER_STATE_REGISTERED | BINDER_LOOPER_STATE_ENTERED)) { + list_add_tail(&death->work.entry, &thread->todo); + } else { + list_add_tail(&death->work.entry, &proc->todo); + wake_up_interruptible(&proc->wait); + } + } + } break; + + default: + printk(KERN_ERR "binder: %d:%d unknown command %d\n", proc->pid, thread->pid, cmd); + return -EINVAL; + } + *consumed = ptr - buffer; + } + return 0; +} + +void +binder_stat_br(struct binder_proc *proc, struct binder_thread *thread, uint32_t cmd) +{ + if (_IOC_NR(cmd) < ARRAY_SIZE(binder_stats.br)) { + binder_stats.br[_IOC_NR(cmd)]++; + proc->stats.br[_IOC_NR(cmd)]++; + thread->stats.br[_IOC_NR(cmd)]++; + } +} + +static int +binder_has_proc_work(struct binder_proc *proc, struct binder_thread *thread) +{ + return !list_empty(&proc->todo) || (thread->looper & BINDER_LOOPER_STATE_NEED_RETURN); +} + +static int +binder_has_thread_work(struct binder_thread *thread) +{ + return !list_empty(&thread->todo) || thread->return_error != BR_OK || + (thread->looper & BINDER_LOOPER_STATE_NEED_RETURN); +} + +static int +binder_thread_read(struct binder_proc *proc, struct binder_thread *thread, + void __user *buffer, int size, signed long *consumed, int non_block) +{ + void __user *ptr = buffer + *consumed; + void __user *end = buffer + size; + + int ret = 0; + int wait_for_proc_work; + + if (*consumed == 0) { + if (put_user(BR_NOOP, (uint32_t __user *)ptr)) + return -EFAULT; + ptr += sizeof(uint32_t); + } + +retry: + wait_for_proc_work = thread->transaction_stack == NULL && list_empty(&thread->todo); + + if (thread->return_error != BR_OK && ptr < end) { + if (thread->return_error2 != BR_OK) { + if (put_user(thread->return_error2, (uint32_t __user *)ptr)) + return -EFAULT; + ptr += sizeof(uint32_t); + if (ptr == end) + goto done; + thread->return_error2 = BR_OK; + } + if (put_user(thread->return_error, (uint32_t __user *)ptr)) + return -EFAULT; + ptr += sizeof(uint32_t); + thread->return_error = BR_OK; + goto done; + } + + + thread->looper |= BINDER_LOOPER_STATE_WAITING; + if (wait_for_proc_work) + proc->ready_threads++; + mutex_unlock(&binder_lock); + if (wait_for_proc_work) { + if (!(thread->looper & (BINDER_LOOPER_STATE_REGISTERED | + BINDER_LOOPER_STATE_ENTERED))) { + binder_user_error("binder: %d:%d ERROR: Thread waiting " + "for process work before calling BC_REGISTER_" + "LOOPER or BC_ENTER_LOOPER (state %x)\n", + proc->pid, thread->pid, thread->looper); + wait_event_interruptible(binder_user_error_wait, binder_stop_on_user_error < 2); + } + binder_set_nice(proc->default_priority); + if (non_block) { + if (!binder_has_proc_work(proc, thread)) + ret = -EAGAIN; + } else + ret = wait_event_interruptible_exclusive(proc->wait, binder_has_proc_work(proc, thread)); + } else { + if (non_block) { + if (!binder_has_thread_work(thread)) + ret = -EAGAIN; + } else + ret = wait_event_interruptible(thread->wait, binder_has_thread_work(thread)); + } + mutex_lock(&binder_lock); + if (wait_for_proc_work) + proc->ready_threads--; + thread->looper &= ~BINDER_LOOPER_STATE_WAITING; + + if (ret) + return ret; + + while (1) { + uint32_t cmd; + struct binder_transaction_data tr; + struct binder_work *w; + struct binder_transaction *t = NULL; + + if (!list_empty(&thread->todo)) + w = list_first_entry(&thread->todo, struct binder_work, entry); + else if (!list_empty(&proc->todo) && wait_for_proc_work) + w = list_first_entry(&proc->todo, struct binder_work, entry); + else { + if (ptr - buffer == 4 && !(thread->looper & BINDER_LOOPER_STATE_NEED_RETURN)) /* no data added */ + goto retry; + break; + } + + if (end - ptr < sizeof(tr) + 4) + break; + + switch (w->type) { + case BINDER_WORK_TRANSACTION: { + t = container_of(w, struct binder_transaction, work); + } break; + case BINDER_WORK_TRANSACTION_COMPLETE: { + cmd = BR_TRANSACTION_COMPLETE; + if (put_user(cmd, (uint32_t __user *)ptr)) + return -EFAULT; + ptr += sizeof(uint32_t); + + binder_stat_br(proc, thread, cmd); + if (binder_debug_mask & BINDER_DEBUG_TRANSACTION_COMPLETE) + printk(KERN_INFO "binder: %d:%d BR_TRANSACTION_COMPLETE\n", + proc->pid, thread->pid); + + list_del(&w->entry); + kfree(w); + binder_stats.obj_deleted[BINDER_STAT_TRANSACTION_COMPLETE]++; + } break; + case BINDER_WORK_NODE: { + struct binder_node *node = container_of(w, struct binder_node, work); + uint32_t cmd = BR_NOOP; + const char *cmd_name; + int strong = node->internal_strong_refs || node->local_strong_refs; + int weak = !hlist_empty(&node->refs) || node->local_weak_refs || strong; + if (weak && !node->has_weak_ref) { + cmd = BR_INCREFS; + cmd_name = "BR_INCREFS"; + node->has_weak_ref = 1; + node->pending_weak_ref = 1; + node->local_weak_refs++; + } else if (strong && !node->has_strong_ref) { + cmd = BR_ACQUIRE; + cmd_name = "BR_ACQUIRE"; + node->has_strong_ref = 1; + node->pending_strong_ref = 1; + node->local_strong_refs++; + } else if (!strong && node->has_strong_ref) { + cmd = BR_RELEASE; + cmd_name = "BR_RELEASE"; + node->has_strong_ref = 0; + } else if (!weak && node->has_weak_ref) { + cmd = BR_DECREFS; + cmd_name = "BR_DECREFS"; + node->has_weak_ref = 0; + } + if (cmd != BR_NOOP) { + if (put_user(cmd, (uint32_t __user *)ptr)) + return -EFAULT; + ptr += sizeof(uint32_t); + if (put_user(node->ptr, (void * __user *)ptr)) + return -EFAULT; + ptr += sizeof(void *); + if (put_user(node->cookie, (void * __user *)ptr)) + return -EFAULT; + ptr += sizeof(void *); + + binder_stat_br(proc, thread, cmd); + if (binder_debug_mask & BINDER_DEBUG_USER_REFS) + printk(KERN_INFO "binder: %d:%d %s %d u%p c%p\n", + proc->pid, thread->pid, cmd_name, node->debug_id, node->ptr, node->cookie); + } else { + list_del_init(&w->entry); + if (!weak && !strong) { + if (binder_debug_mask & BINDER_DEBUG_INTERNAL_REFS) + printk(KERN_INFO "binder: %d:%d node %d u%p c%p deleted\n", + proc->pid, thread->pid, node->debug_id, node->ptr, node->cookie); + rb_erase(&node->rb_node, &proc->nodes); + kfree(node); + binder_stats.obj_deleted[BINDER_STAT_NODE]++; + } else { + if (binder_debug_mask & BINDER_DEBUG_INTERNAL_REFS) + printk(KERN_INFO "binder: %d:%d node %d u%p c%p state unchanged\n", + proc->pid, thread->pid, node->debug_id, node->ptr, node->cookie); + } + } + } break; + case BINDER_WORK_DEAD_BINDER: + case BINDER_WORK_DEAD_BINDER_AND_CLEAR: + case BINDER_WORK_CLEAR_DEATH_NOTIFICATION: { + struct binder_ref_death *death = container_of(w, struct binder_ref_death, work); + uint32_t cmd; + if (w->type == BINDER_WORK_CLEAR_DEATH_NOTIFICATION) + cmd = BR_CLEAR_DEATH_NOTIFICATION_DONE; + else + cmd = BR_DEAD_BINDER; + if (put_user(cmd, (uint32_t __user *)ptr)) + return -EFAULT; + ptr += sizeof(uint32_t); + if (put_user(death->cookie, (void * __user *)ptr)) + return -EFAULT; + ptr += sizeof(void *); + if (binder_debug_mask & BINDER_DEBUG_DEATH_NOTIFICATION) + printk(KERN_INFO "binder: %d:%d %s %p\n", + proc->pid, thread->pid, + cmd == BR_DEAD_BINDER ? + "BR_DEAD_BINDER" : + "BR_CLEAR_DEATH_NOTIFICATION_DONE", + death->cookie); + + if (w->type == BINDER_WORK_CLEAR_DEATH_NOTIFICATION) { + list_del(&w->entry); + kfree(death); + binder_stats.obj_deleted[BINDER_STAT_DEATH]++; + } else + list_move(&w->entry, &proc->delivered_death); + if (cmd == BR_DEAD_BINDER) + goto done; /* DEAD_BINDER notifications can cause transactions */ + } break; + } + + if (!t) + continue; + + BUG_ON(t->buffer == NULL); + if (t->buffer->target_node) { + struct binder_node *target_node = t->buffer->target_node; + tr.target.ptr = target_node->ptr; + tr.cookie = target_node->cookie; + t->saved_priority = task_nice(current); + if (t->priority < target_node->min_priority && + !(t->flags & TF_ONE_WAY)) + binder_set_nice(t->priority); + else if (!(t->flags & TF_ONE_WAY) || + t->saved_priority > target_node->min_priority) + binder_set_nice(target_node->min_priority); + cmd = BR_TRANSACTION; + } else { + tr.target.ptr = NULL; + tr.cookie = NULL; + cmd = BR_REPLY; + } + tr.code = t->code; + tr.flags = t->flags; + tr.sender_euid = t->sender_euid; + + if (t->from) { + struct task_struct *sender = t->from->proc->tsk; + tr.sender_pid = task_tgid_nr_ns(sender, current->nsproxy->pid_ns); + } else { + tr.sender_pid = 0; + } + + tr.data_size = t->buffer->data_size; + tr.offsets_size = t->buffer->offsets_size; + tr.data.ptr.buffer = (void *)((void *)t->buffer->data + proc->user_buffer_offset); + tr.data.ptr.offsets = tr.data.ptr.buffer + ALIGN(t->buffer->data_size, sizeof(void *)); + + if (put_user(cmd, (uint32_t __user *)ptr)) + return -EFAULT; + ptr += sizeof(uint32_t); + if (copy_to_user(ptr, &tr, sizeof(tr))) + return -EFAULT; + ptr += sizeof(tr); + + binder_stat_br(proc, thread, cmd); + if (binder_debug_mask & BINDER_DEBUG_TRANSACTION) + printk(KERN_INFO "binder: %d:%d %s %d %d:%d, cmd %d size %d-%d ptr %p-%p\n", + proc->pid, thread->pid, + (cmd == BR_TRANSACTION) ? "BR_TRANSACTION" : "BR_REPLY", + t->debug_id, t->from ? t->from->proc->pid : 0, + t->from ? t->from->pid : 0, cmd, + t->buffer->data_size, t->buffer->offsets_size, + tr.data.ptr.buffer, tr.data.ptr.offsets); + + list_del(&t->work.entry); + t->buffer->allow_user_free = 1; + if (cmd == BR_TRANSACTION && !(t->flags & TF_ONE_WAY)) { + t->to_parent = thread->transaction_stack; + t->to_thread = thread; + thread->transaction_stack = t; + } else { + t->buffer->transaction = NULL; + kfree(t); + binder_stats.obj_deleted[BINDER_STAT_TRANSACTION]++; + } + break; + } + +done: + + *consumed = ptr - buffer; + if (proc->requested_threads + proc->ready_threads == 0 && + proc->requested_threads_started < proc->max_threads && + (thread->looper & (BINDER_LOOPER_STATE_REGISTERED | + BINDER_LOOPER_STATE_ENTERED)) /* the user-space code fails to */ + /*spawn a new thread if we leave this out */) { + proc->requested_threads++; + if (binder_debug_mask & BINDER_DEBUG_THREADS) + printk(KERN_INFO "binder: %d:%d BR_SPAWN_LOOPER\n", + proc->pid, thread->pid); + if (put_user(BR_SPAWN_LOOPER, (uint32_t __user *)buffer)) + return -EFAULT; + } + return 0; +} + +static void binder_release_work(struct list_head *list) +{ + struct binder_work *w; + while (!list_empty(list)) { + w = list_first_entry(list, struct binder_work, entry); + list_del_init(&w->entry); + switch (w->type) { + case BINDER_WORK_TRANSACTION: { + struct binder_transaction *t = container_of(w, struct binder_transaction, work); + if (t->buffer->target_node && !(t->flags & TF_ONE_WAY)) + binder_send_failed_reply(t, BR_DEAD_REPLY); + } break; + case BINDER_WORK_TRANSACTION_COMPLETE: { + kfree(w); + binder_stats.obj_deleted[BINDER_STAT_TRANSACTION_COMPLETE]++; + } break; + default: + break; + } + } + +} + +static struct binder_thread *binder_get_thread(struct binder_proc *proc) +{ + struct binder_thread *thread = NULL; + struct rb_node *parent = NULL; + struct rb_node **p = &proc->threads.rb_node; + + while (*p) { + parent = *p; + thread = rb_entry(parent, struct binder_thread, rb_node); + + if (current->pid < thread->pid) + p = &(*p)->rb_left; + else if (current->pid > thread->pid) + p = &(*p)->rb_right; + else + break; + } + if (*p == NULL) { + thread = kzalloc(sizeof(*thread), GFP_KERNEL); + if (thread == NULL) + return NULL; + binder_stats.obj_created[BINDER_STAT_THREAD]++; + thread->proc = proc; + thread->pid = current->pid; + init_waitqueue_head(&thread->wait); + INIT_LIST_HEAD(&thread->todo); + rb_link_node(&thread->rb_node, parent, p); + rb_insert_color(&thread->rb_node, &proc->threads); + thread->looper |= BINDER_LOOPER_STATE_NEED_RETURN; + thread->return_error = BR_OK; + thread->return_error2 = BR_OK; + } + return thread; +} + +static int binder_free_thread(struct binder_proc *proc, struct binder_thread *thread) +{ + struct binder_transaction *t; + struct binder_transaction *send_reply = NULL; + int active_transactions = 0; + + rb_erase(&thread->rb_node, &proc->threads); + t = thread->transaction_stack; + if (t && t->to_thread == thread) + send_reply = t; + while (t) { + active_transactions++; + if (binder_debug_mask & BINDER_DEBUG_DEAD_TRANSACTION) + printk(KERN_INFO "binder: release %d:%d transaction %d %s, still active\n", + proc->pid, thread->pid, t->debug_id, (t->to_thread == thread) ? "in" : "out"); + if (t->to_thread == thread) { + t->to_proc = NULL; + t->to_thread = NULL; + if (t->buffer) { + t->buffer->transaction = NULL; + t->buffer = NULL; + } + t = t->to_parent; + } else if (t->from == thread) { + t->from = NULL; + t = t->from_parent; + } else + BUG(); + } + if (send_reply) + binder_send_failed_reply(send_reply, BR_DEAD_REPLY); + binder_release_work(&thread->todo); + kfree(thread); + binder_stats.obj_deleted[BINDER_STAT_THREAD]++; + return active_transactions; +} + +static unsigned int binder_poll(struct file *filp, struct poll_table_struct *wait) +{ + struct binder_proc *proc = filp->private_data; + struct binder_thread *thread = NULL; + int wait_for_proc_work; + + mutex_lock(&binder_lock); + thread = binder_get_thread(proc); + + wait_for_proc_work = thread->transaction_stack == NULL && + list_empty(&thread->todo) && thread->return_error == BR_OK; + mutex_unlock(&binder_lock); + + if (wait_for_proc_work) { + if (binder_has_proc_work(proc, thread)) + return POLLIN; + poll_wait(filp, &proc->wait, wait); + if (binder_has_proc_work(proc, thread)) + return POLLIN; + } else { + if (binder_has_thread_work(thread)) + return POLLIN; + poll_wait(filp, &thread->wait, wait); + if (binder_has_thread_work(thread)) + return POLLIN; + } + return 0; +} + +static long binder_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) +{ + int ret; + struct binder_proc *proc = filp->private_data; + struct binder_thread *thread; + unsigned int size = _IOC_SIZE(cmd); + void __user *ubuf = (void __user *)arg; + + /*printk(KERN_INFO "binder_ioctl: %d:%d %x %lx\n", proc->pid, current->pid, cmd, arg);*/ + + ret = wait_event_interruptible(binder_user_error_wait, binder_stop_on_user_error < 2); + if (ret) + return ret; + + mutex_lock(&binder_lock); + thread = binder_get_thread(proc); + if (thread == NULL) { + ret = -ENOMEM; + goto err; + } + + switch (cmd) { + case BINDER_WRITE_READ: { + struct binder_write_read bwr; + if (size != sizeof(struct binder_write_read)) { + ret = -EINVAL; + goto err; + } + if (copy_from_user(&bwr, ubuf, sizeof(bwr))) { + ret = -EFAULT; + goto err; + } + if (binder_debug_mask & BINDER_DEBUG_READ_WRITE) + printk(KERN_INFO "binder: %d:%d write %ld at %08lx, read %ld at %08lx\n", + proc->pid, thread->pid, bwr.write_size, bwr.write_buffer, bwr.read_size, bwr.read_buffer); + if (bwr.write_size > 0) { + ret = binder_thread_write(proc, thread, (void __user *)bwr.write_buffer, bwr.write_size, &bwr.write_consumed); + if (ret < 0) { + bwr.read_consumed = 0; + if (copy_to_user(ubuf, &bwr, sizeof(bwr))) + ret = -EFAULT; + goto err; + } + } + if (bwr.read_size > 0) { + ret = binder_thread_read(proc, thread, (void __user *)bwr.read_buffer, bwr.read_size, &bwr.read_consumed, filp->f_flags & O_NONBLOCK); + if (!list_empty(&proc->todo)) + wake_up_interruptible(&proc->wait); + if (ret < 0) { + if (copy_to_user(ubuf, &bwr, sizeof(bwr))) + ret = -EFAULT; + goto err; + } + } + if (binder_debug_mask & BINDER_DEBUG_READ_WRITE) + printk(KERN_INFO "binder: %d:%d wrote %ld of %ld, read return %ld of %ld\n", + proc->pid, thread->pid, bwr.write_consumed, bwr.write_size, bwr.read_consumed, bwr.read_size); + if (copy_to_user(ubuf, &bwr, sizeof(bwr))) { + ret = -EFAULT; + goto err; + } + break; + } + case BINDER_SET_MAX_THREADS: + if (copy_from_user(&proc->max_threads, ubuf, sizeof(proc->max_threads))) { + ret = -EINVAL; + goto err; + } + break; + case BINDER_SET_CONTEXT_MGR: + if (binder_context_mgr_node != NULL) { + printk(KERN_ERR "binder: BINDER_SET_CONTEXT_MGR already set\n"); + ret = -EBUSY; + goto err; + } + if (binder_context_mgr_uid != -1) { + if (binder_context_mgr_uid != current->euid) { + printk(KERN_ERR "binder: BINDER_SET_" + "CONTEXT_MGR bad uid %d != %d\n", + current->euid, + binder_context_mgr_uid); + ret = -EPERM; + goto err; + } + } else + binder_context_mgr_uid = current->euid; + binder_context_mgr_node = binder_new_node(proc, NULL, NULL); + if (binder_context_mgr_node == NULL) { + ret = -ENOMEM; + goto err; + } + binder_context_mgr_node->local_weak_refs++; + binder_context_mgr_node->local_strong_refs++; + binder_context_mgr_node->has_strong_ref = 1; + binder_context_mgr_node->has_weak_ref = 1; + break; + case BINDER_THREAD_EXIT: + if (binder_debug_mask & BINDER_DEBUG_THREADS) + printk(KERN_INFO "binder: %d:%d exit\n", + proc->pid, thread->pid); + binder_free_thread(proc, thread); + thread = NULL; + break; + case BINDER_VERSION: + if (size != sizeof(struct binder_version)) { + ret = -EINVAL; + goto err; + } + if (put_user(BINDER_CURRENT_PROTOCOL_VERSION, &((struct binder_version *)ubuf)->protocol_version)) { + ret = -EINVAL; + goto err; + } + break; + default: + ret = -EINVAL; + goto err; + } + ret = 0; +err: + if (thread) + thread->looper &= ~BINDER_LOOPER_STATE_NEED_RETURN; + mutex_unlock(&binder_lock); + wait_event_interruptible(binder_user_error_wait, binder_stop_on_user_error < 2); + if (ret && ret != -ERESTARTSYS) + printk(KERN_INFO "binder: %d:%d ioctl %x %lx returned %d\n", proc->pid, current->pid, cmd, arg, ret); + return ret; +} + +static void binder_vma_open(struct vm_area_struct *vma) +{ + struct binder_proc *proc = vma->vm_private_data; + if (binder_debug_mask & BINDER_DEBUG_OPEN_CLOSE) + printk(KERN_INFO "binder: %d open vm area %lx-%lx (%ld K) vma %lx pagep %lx\n", proc->pid, vma->vm_start, vma->vm_end, (vma->vm_end - vma->vm_start) / SZ_1K, vma->vm_flags, vma->vm_page_prot); + dump_stack(); +} +static void binder_vma_close(struct vm_area_struct *vma) +{ + struct binder_proc *proc = vma->vm_private_data; + if (binder_debug_mask & BINDER_DEBUG_OPEN_CLOSE) + printk(KERN_INFO "binder: %d close vm area %lx-%lx (%ld K) vma %lx pagep %lx\n", proc->pid, vma->vm_start, vma->vm_end, (vma->vm_end - vma->vm_start) / SZ_1K, vma->vm_flags, vma->vm_page_prot); + proc->vma = NULL; +} + +static struct vm_operations_struct binder_vm_ops = { + .open = binder_vma_open, + .close = binder_vma_close, +}; + +static int binder_mmap(struct file *filp, struct vm_area_struct *vma) +{ + int ret; + struct vm_struct *area; + struct binder_proc *proc = filp->private_data; + const char *failure_string; + struct binder_buffer *buffer; + + if ((vma->vm_end - vma->vm_start) > SZ_4M) + vma->vm_end = vma->vm_start + SZ_4M; + + if (binder_debug_mask & BINDER_DEBUG_OPEN_CLOSE) + printk(KERN_INFO "binder_mmap: %d %lx-%lx (%ld K) vma %lx pagep %lx\n", proc->pid, vma->vm_start, vma->vm_end, (vma->vm_end - vma->vm_start) / SZ_1K, vma->vm_flags, vma->vm_page_prot); + + if (vma->vm_flags & FORBIDDEN_MMAP_FLAGS) { + ret = -EPERM; + failure_string = "bad vm_flags"; + goto err_bad_arg; + } + vma->vm_flags = (vma->vm_flags | VM_DONTCOPY) & ~VM_MAYWRITE; + + area = get_vm_area(vma->vm_end - vma->vm_start, VM_IOREMAP); + if (area == NULL) { + ret = -ENOMEM; + failure_string = "get_vm_area"; + goto err_get_vm_area_failed; + } + proc->buffer = area->addr; + proc->user_buffer_offset = vma->vm_start - (size_t)proc->buffer; + +#ifdef CONFIG_CPU_CACHE_VIPT + if (cache_is_vipt_aliasing()) { + while (CACHE_COLOUR((vma->vm_start ^ (uint32_t)proc->buffer))) { + printk(KERN_INFO "binder_mmap: %d %lx-%lx maps %p bad alignment\n", proc->pid, vma->vm_start, vma->vm_end, proc->buffer); + vma->vm_start += PAGE_SIZE; + } + } +#endif + proc->pages = kzalloc(sizeof(proc->pages[0]) * ((vma->vm_end - vma->vm_start) / PAGE_SIZE), GFP_KERNEL); + if (proc->pages == NULL) { + ret = -ENOMEM; + failure_string = "alloc page array"; + goto err_alloc_pages_failed; + } + proc->buffer_size = vma->vm_end - vma->vm_start; + + vma->vm_ops = &binder_vm_ops; + vma->vm_private_data = proc; + + if (binder_update_page_range(proc, 1, proc->buffer, proc->buffer + PAGE_SIZE, vma)) { + ret = -ENOMEM; + failure_string = "alloc small buf"; + goto err_alloc_small_buf_failed; + } + buffer = proc->buffer; + INIT_LIST_HEAD(&proc->buffers); + list_add(&buffer->entry, &proc->buffers); + buffer->free = 1; + binder_insert_free_buffer(proc, buffer); + proc->free_async_space = proc->buffer_size / 2; + barrier(); + proc->vma = vma; + + /*printk(KERN_INFO "binder_mmap: %d %lx-%lx maps %p\n", proc->pid, vma->vm_start, vma->vm_end, proc->buffer);*/ + return 0; + +err_alloc_small_buf_failed: + kfree(proc->pages); +err_alloc_pages_failed: + vfree(proc->buffer); +err_get_vm_area_failed: + mutex_unlock(&binder_lock); +err_bad_arg: + printk(KERN_ERR "binder_mmap: %d %lx-%lx %s failed %d\n", proc->pid, vma->vm_start, vma->vm_end, failure_string, ret); + return ret; +} + +static int binder_open(struct inode *nodp, struct file *filp) +{ + struct binder_proc *proc; + + if (binder_debug_mask & BINDER_DEBUG_OPEN_CLOSE) + printk(KERN_INFO "binder_open: %d:%d\n", current->group_leader->pid, current->pid); + + proc = kzalloc(sizeof(*proc), GFP_KERNEL); + if (proc == NULL) + return -ENOMEM; + get_task_struct(current); + proc->tsk = current; + INIT_LIST_HEAD(&proc->todo); + init_waitqueue_head(&proc->wait); + proc->default_priority = task_nice(current); + mutex_lock(&binder_lock); + binder_stats.obj_created[BINDER_STAT_PROC]++; + hlist_add_head(&proc->proc_node, &binder_procs); + proc->pid = current->group_leader->pid; + INIT_LIST_HEAD(&proc->delivered_death); + filp->private_data = proc; + mutex_unlock(&binder_lock); + + if (binder_proc_dir_entry_proc) { + char strbuf[11]; + snprintf(strbuf, sizeof(strbuf), "%u", proc->pid); + create_proc_read_entry(strbuf, S_IRUGO, binder_proc_dir_entry_proc, binder_read_proc_proc, proc); + } + + return 0; +} + +static int binder_flush(struct file *filp, fl_owner_t id) +{ + struct rb_node *n; + struct binder_proc *proc = filp->private_data; + int wake_count = 0; + + mutex_lock(&binder_lock); + for (n = rb_first(&proc->threads); n != NULL; n = rb_next(n)) { + struct binder_thread *thread = rb_entry(n, struct binder_thread, rb_node); + thread->looper |= BINDER_LOOPER_STATE_NEED_RETURN; + if (thread->looper & BINDER_LOOPER_STATE_WAITING) { + wake_up_interruptible(&thread->wait); + wake_count++; + } + } + wake_up_interruptible_all(&proc->wait); + mutex_unlock(&binder_lock); + + if (binder_debug_mask & BINDER_DEBUG_OPEN_CLOSE) + printk(KERN_INFO "binder_flush: %d woke %d threads\n", proc->pid, wake_count); + + return 0; +} + +static int binder_release(struct inode *nodp, struct file *filp) +{ + struct hlist_node *pos; + struct binder_transaction *t; + struct rb_node *n; + struct binder_proc *proc = filp->private_data; + int threads, nodes, incoming_refs, outgoing_refs, buffers, active_transactions, page_count; + + if (binder_proc_dir_entry_proc) { + char strbuf[11]; + snprintf(strbuf, sizeof(strbuf), "%u", proc->pid); + remove_proc_entry(strbuf, binder_proc_dir_entry_proc); + } + mutex_lock(&binder_lock); + hlist_del(&proc->proc_node); + if (binder_context_mgr_node && binder_context_mgr_node->proc == proc) { + if (binder_debug_mask & BINDER_DEBUG_DEAD_BINDER) + printk(KERN_INFO "binder_release: %d context_mgr_node gone\n", proc->pid); + binder_context_mgr_node = NULL; + } + + threads = 0; + active_transactions = 0; + while ((n = rb_first(&proc->threads))) { + struct binder_thread *thread = rb_entry(n, struct binder_thread, rb_node); + threads++; + active_transactions += binder_free_thread(proc, thread); + } + nodes = 0; + incoming_refs = 0; + while ((n = rb_first(&proc->nodes))) { + struct binder_node *node = rb_entry(n, struct binder_node, rb_node); + + nodes++; + rb_erase(&node->rb_node, &proc->nodes); + list_del_init(&node->work.entry); + if (hlist_empty(&node->refs)) { + kfree(node); + binder_stats.obj_deleted[BINDER_STAT_NODE]++; + } else { + struct binder_ref *ref; + int death = 0; + + node->proc = NULL; + node->local_strong_refs = 0; + node->local_weak_refs = 0; + hlist_add_head(&node->dead_node, &binder_dead_nodes); + + hlist_for_each_entry(ref, pos, &node->refs, node_entry) { + incoming_refs++; + if (ref->death) { + death++; + if (list_empty(&ref->death->work.entry)) { + ref->death->work.type = BINDER_WORK_DEAD_BINDER; + list_add_tail(&ref->death->work.entry, &ref->proc->todo); + wake_up_interruptible(&ref->proc->wait); + } else + BUG(); + } + } + if (binder_debug_mask & BINDER_DEBUG_DEAD_BINDER) + printk(KERN_INFO "binder: node %d now dead, refs %d, death %d\n", node->debug_id, incoming_refs, death); + } + } + outgoing_refs = 0; + while ((n = rb_first(&proc->refs_by_desc))) { + struct binder_ref *ref = rb_entry(n, struct binder_ref, rb_node_desc); + outgoing_refs++; + binder_delete_ref(ref); + } + binder_release_work(&proc->todo); + buffers = 0; + + while ((n = rb_first(&proc->allocated_buffers))) { + struct binder_buffer *buffer = rb_entry(n, struct binder_buffer, rb_node); + t = buffer->transaction; + if (t) { + t->buffer = NULL; + buffer->transaction = NULL; + printk(KERN_ERR "binder: release proc %d, transaction %d, not freed\n", proc->pid, t->debug_id); + /*BUG();*/ + } + binder_free_buf(proc, buffer); + buffers++; + } + + binder_stats.obj_deleted[BINDER_STAT_PROC]++; + mutex_unlock(&binder_lock); + + page_count = 0; + if (proc->pages) { + int i; + for (i = 0; i < proc->buffer_size / PAGE_SIZE; i++) { + if (proc->pages[i]) { + if (binder_debug_mask & BINDER_DEBUG_BUFFER_ALLOC) + printk(KERN_INFO "binder_release: %d: page %d at %p not freed\n", proc->pid, i, proc->buffer + i * PAGE_SIZE); + __free_page(proc->pages[i]); + page_count++; + } + } + kfree(proc->pages); + vfree(proc->buffer); + } + + put_task_struct(proc->tsk); + + if (binder_debug_mask & BINDER_DEBUG_OPEN_CLOSE) + printk(KERN_INFO "binder_release: %d threads %d, nodes %d (ref %d), refs %d, active transactions %d, buffers %d, pages %d\n", + proc->pid, threads, nodes, incoming_refs, outgoing_refs, active_transactions, buffers, page_count); + + kfree(proc); + return 0; +} + +static char *print_binder_transaction(char *buf, char *end, const char *prefix, struct binder_transaction *t) +{ + buf += snprintf(buf, end - buf, "%s %d: %p from %d:%d to %d:%d code %x flags %x pri %ld r%d", + prefix, t->debug_id, t, t->from ? t->from->proc->pid : 0, + t->from ? t->from->pid : 0, + t->to_proc ? t->to_proc->pid : 0, + t->to_thread ? t->to_thread->pid : 0, + t->code, t->flags, t->priority, t->need_reply); + if (buf >= end) + return buf; + if (t->buffer == NULL) { + buf += snprintf(buf, end - buf, " buffer free\n"); + return buf; + } + if (t->buffer->target_node) { + buf += snprintf(buf, end - buf, " node %d", + t->buffer->target_node->debug_id); + if (buf >= end) + return buf; + } + buf += snprintf(buf, end - buf, " size %d:%d data %p\n", + t->buffer->data_size, t->buffer->offsets_size, + t->buffer->data); + return buf; +} + +static char *print_binder_buffer(char *buf, char *end, const char *prefix, struct binder_buffer *buffer) +{ + buf += snprintf(buf, end - buf, "%s %d: %p size %d:%d %s\n", + prefix, buffer->debug_id, buffer->data, + buffer->data_size, buffer->offsets_size, + buffer->transaction ? "active" : "delivered"); + return buf; +} + +static char *print_binder_work(char *buf, char *end, const char *prefix, + const char *transaction_prefix, struct binder_work *w) +{ + struct binder_node *node; + struct binder_transaction *t; + + switch (w->type) { + case BINDER_WORK_TRANSACTION: + t = container_of(w, struct binder_transaction, work); + buf = print_binder_transaction(buf, end, transaction_prefix, t); + break; + case BINDER_WORK_TRANSACTION_COMPLETE: + buf += snprintf(buf, end - buf, + "%stransaction complete\n", prefix); + break; + case BINDER_WORK_NODE: + node = container_of(w, struct binder_node, work); + buf += snprintf(buf, end - buf, "%snode work %d: u%p c%p\n", + prefix, node->debug_id, node->ptr, node->cookie); + break; + case BINDER_WORK_DEAD_BINDER: + buf += snprintf(buf, end - buf, "%shas dead binder\n", prefix); + break; + case BINDER_WORK_DEAD_BINDER_AND_CLEAR: + buf += snprintf(buf, end - buf, + "%shas cleared dead binder\n", prefix); + break; + case BINDER_WORK_CLEAR_DEATH_NOTIFICATION: + buf += snprintf(buf, end - buf, + "%shas cleared death notification\n", prefix); + break; + default: + buf += snprintf(buf, end - buf, "%sunknown work: type %d\n", + prefix, w->type); + break; + } + return buf; +} + +static char *print_binder_thread(char *buf, char *end, struct binder_thread *thread, int print_always) +{ + struct binder_transaction *t; + struct binder_work *w; + char *start_buf = buf; + char *header_buf; + + buf += snprintf(buf, end - buf, " thread %d: l %02x\n", thread->pid, thread->looper); + header_buf = buf; + t = thread->transaction_stack; + while (t) { + if (buf >= end) + break; + if (t->from == thread) { + buf = print_binder_transaction(buf, end, " outgoing transaction", t); + t = t->from_parent; + } else if (t->to_thread == thread) { + buf = print_binder_transaction(buf, end, " incoming transaction", t); + t = t->to_parent; + } else { + buf = print_binder_transaction(buf, end, " bad transaction", t); + t = NULL; + } + } + list_for_each_entry(w, &thread->todo, entry) { + if (buf >= end) + break; + buf = print_binder_work(buf, end, " ", + " pending transaction", w); + } + if (!print_always && buf == header_buf) + buf = start_buf; + return buf; +} + +static char *print_binder_node(char *buf, char *end, struct binder_node *node) +{ + struct binder_ref *ref; + struct hlist_node *pos; + struct binder_work *w; + int count; + count = 0; + hlist_for_each_entry(ref, pos, &node->refs, node_entry) + count++; + + buf += snprintf(buf, end - buf, " node %d: u%p c%p hs %d hw %d ls %d lw %d is %d iw %d", + node->debug_id, node->ptr, node->cookie, + node->has_strong_ref, node->has_weak_ref, + node->local_strong_refs, node->local_weak_refs, + node->internal_strong_refs, count); + if (buf >= end) + return buf; + if (count) { + buf += snprintf(buf, end - buf, " proc"); + if (buf >= end) + return buf; + hlist_for_each_entry(ref, pos, &node->refs, node_entry) { + buf += snprintf(buf, end - buf, " %d", ref->proc->pid); + if (buf >= end) + return buf; + } + } + buf += snprintf(buf, end - buf, "\n"); + list_for_each_entry(w, &node->async_todo, entry) { + if (buf >= end) + break; + buf = print_binder_work(buf, end, " ", + " pending async transaction", w); + } + return buf; +} + +static char *print_binder_ref(char *buf, char *end, struct binder_ref *ref) +{ + buf += snprintf(buf, end - buf, " ref %d: desc %d %snode %d s %d w %d d %p\n", + ref->debug_id, ref->desc, ref->node->proc ? "" : "dead ", + ref->node->debug_id, ref->strong, ref->weak, ref->death); + return buf; +} + +static char *print_binder_proc(char *buf, char *end, struct binder_proc *proc, int print_all) +{ + struct binder_work *w; + struct rb_node *n; + char *start_buf = buf; + char *header_buf; + + buf += snprintf(buf, end - buf, "proc %d\n", proc->pid); + header_buf = buf; + + for (n = rb_first(&proc->threads); n != NULL && buf < end; n = rb_next(n)) + buf = print_binder_thread(buf, end, rb_entry(n, struct binder_thread, rb_node), print_all); + for (n = rb_first(&proc->nodes); n != NULL && buf < end; n = rb_next(n)) { + struct binder_node *node = rb_entry(n, struct binder_node, rb_node); + if (print_all || node->has_async_transaction) + buf = print_binder_node(buf, end, node); + } + if (print_all) { + for (n = rb_first(&proc->refs_by_desc); n != NULL && buf < end; n = rb_next(n)) + buf = print_binder_ref(buf, end, rb_entry(n, struct binder_ref, rb_node_desc)); + } + for (n = rb_first(&proc->allocated_buffers); n != NULL && buf < end; n = rb_next(n)) + buf = print_binder_buffer(buf, end, " buffer", rb_entry(n, struct binder_buffer, rb_node)); + list_for_each_entry(w, &proc->todo, entry) { + if (buf >= end) + break; + buf = print_binder_work(buf, end, " ", + " pending transaction", w); + } + list_for_each_entry(w, &proc->delivered_death, entry) { + if (buf >= end) + break; + buf += snprintf(buf, end - buf, " has delivered dead binder\n"); + break; + } + if (!print_all && buf == header_buf) + buf = start_buf; + return buf; +} + +static const char *binder_return_strings[] = { + "BR_ERROR", + "BR_OK", + "BR_TRANSACTION", + "BR_REPLY", + "BR_ACQUIRE_RESULT", + "BR_DEAD_REPLY", + "BR_TRANSACTION_COMPLETE", + "BR_INCREFS", + "BR_ACQUIRE", + "BR_RELEASE", + "BR_DECREFS", + "BR_ATTEMPT_ACQUIRE", + "BR_NOOP", + "BR_SPAWN_LOOPER", + "BR_FINISHED", + "BR_DEAD_BINDER", + "BR_CLEAR_DEATH_NOTIFICATION_DONE", + "BR_FAILED_REPLY" +}; + +static const char *binder_command_strings[] = { + "BC_TRANSACTION", + "BC_REPLY", + "BC_ACQUIRE_RESULT", + "BC_FREE_BUFFER", + "BC_INCREFS", + "BC_ACQUIRE", + "BC_RELEASE", + "BC_DECREFS", + "BC_INCREFS_DONE", + "BC_ACQUIRE_DONE", + "BC_ATTEMPT_ACQUIRE", + "BC_REGISTER_LOOPER", + "BC_ENTER_LOOPER", + "BC_EXIT_LOOPER", + "BC_REQUEST_DEATH_NOTIFICATION", + "BC_CLEAR_DEATH_NOTIFICATION", + "BC_DEAD_BINDER_DONE" +}; + +static const char *binder_objstat_strings[] = { + "proc", + "thread", + "node", + "ref", + "death", + "transaction", + "transaction_complete" +}; + +static char *print_binder_stats(char *buf, char *end, const char *prefix, struct binder_stats *stats) +{ + int i; + + BUILD_BUG_ON(ARRAY_SIZE(stats->bc) != ARRAY_SIZE(binder_command_strings)); + for (i = 0; i < ARRAY_SIZE(stats->bc); i++) { + if (stats->bc[i]) + buf += snprintf(buf, end - buf, "%s%s: %d\n", prefix, + binder_command_strings[i], stats->bc[i]); + if (buf >= end) + return buf; + } + + BUILD_BUG_ON(ARRAY_SIZE(stats->br) != ARRAY_SIZE(binder_return_strings)); + for (i = 0; i < ARRAY_SIZE(stats->br); i++) { + if (stats->br[i]) + buf += snprintf(buf, end - buf, "%s%s: %d\n", prefix, + binder_return_strings[i], stats->br[i]); + if (buf >= end) + return buf; + } + + BUILD_BUG_ON(ARRAY_SIZE(stats->obj_created) != ARRAY_SIZE(binder_objstat_strings)); + BUILD_BUG_ON(ARRAY_SIZE(stats->obj_created) != ARRAY_SIZE(stats->obj_deleted)); + for (i = 0; i < ARRAY_SIZE(stats->obj_created); i++) { + if (stats->obj_created[i] || stats->obj_deleted[i]) + buf += snprintf(buf, end - buf, "%s%s: active %d total %d\n", prefix, + binder_objstat_strings[i], + stats->obj_created[i] - stats->obj_deleted[i], + stats->obj_created[i]); + if (buf >= end) + return buf; + } + return buf; +} + +static char *print_binder_proc_stats(char *buf, char *end, struct binder_proc *proc) +{ + struct binder_work *w; + struct rb_node *n; + int count, strong, weak; + + buf += snprintf(buf, end - buf, "proc %d\n", proc->pid); + if (buf >= end) + return buf; + count = 0; + for (n = rb_first(&proc->threads); n != NULL; n = rb_next(n)) + count++; + buf += snprintf(buf, end - buf, " threads: %d\n", count); + if (buf >= end) + return buf; + buf += snprintf(buf, end - buf, " requested threads: %d+%d/%d\n" + " ready threads %d\n" + " free async space %d\n", proc->requested_threads, + proc->requested_threads_started, proc->max_threads, + proc->ready_threads, proc->free_async_space); + if (buf >= end) + return buf; + count = 0; + for (n = rb_first(&proc->nodes); n != NULL; n = rb_next(n)) + count++; + buf += snprintf(buf, end - buf, " nodes: %d\n", count); + if (buf >= end) + return buf; + count = 0; + strong = 0; + weak = 0; + for (n = rb_first(&proc->refs_by_desc); n != NULL; n = rb_next(n)) { + struct binder_ref *ref = rb_entry(n, struct binder_ref, rb_node_desc); + count++; + strong += ref->strong; + weak += ref->weak; + } + buf += snprintf(buf, end - buf, " refs: %d s %d w %d\n", count, strong, weak); + if (buf >= end) + return buf; + + count = 0; + for (n = rb_first(&proc->allocated_buffers); n != NULL; n = rb_next(n)) + count++; + buf += snprintf(buf, end - buf, " buffers: %d\n", count); + if (buf >= end) + return buf; + + count = 0; + list_for_each_entry(w, &proc->todo, entry) { + switch (w->type) { + case BINDER_WORK_TRANSACTION: + count++; + break; + default: + break; + } + } + buf += snprintf(buf, end - buf, " pending transactions: %d\n", count); + if (buf >= end) + return buf; + + buf = print_binder_stats(buf, end, " ", &proc->stats); + + return buf; +} + + +static int binder_read_proc_state( + char *page, char **start, off_t off, int count, int *eof, void *data) +{ + struct binder_proc *proc; + struct hlist_node *pos; + struct binder_node *node; + int len = 0; + char *buf = page; + char *end = page + PAGE_SIZE; + int do_lock = !binder_debug_no_lock; + + if (off) + return 0; + + if (do_lock) + mutex_lock(&binder_lock); + + buf += snprintf(buf, end - buf, "binder state:\n"); + + if (!hlist_empty(&binder_dead_nodes)) + buf += snprintf(buf, end - buf, "dead nodes:\n"); + hlist_for_each_entry(node, pos, &binder_dead_nodes, dead_node) { + if (buf >= end) + break; + buf = print_binder_node(buf, end, node); + } + + hlist_for_each_entry(proc, pos, &binder_procs, proc_node) { + if (buf >= end) + break; + buf = print_binder_proc(buf, end, proc, 1); + } + if (do_lock) + mutex_unlock(&binder_lock); + if (buf > page + PAGE_SIZE) + buf = page + PAGE_SIZE; + + *start = page + off; + + len = buf - page; + if (len > off) + len -= off; + else + len = 0; + + return len < count ? len : count; +} + +static int binder_read_proc_stats( + char *page, char **start, off_t off, int count, int *eof, void *data) +{ + struct binder_proc *proc; + struct hlist_node *pos; + int len = 0; + char *p = page; + int do_lock = !binder_debug_no_lock; + + if (off) + return 0; + + if (do_lock) + mutex_lock(&binder_lock); + + p += snprintf(p, PAGE_SIZE, "binder stats:\n"); + + p = print_binder_stats(p, page + PAGE_SIZE, "", &binder_stats); + + hlist_for_each_entry(proc, pos, &binder_procs, proc_node) { + if (p >= page + PAGE_SIZE) + break; + p = print_binder_proc_stats(p, page + PAGE_SIZE, proc); + } + if (do_lock) + mutex_unlock(&binder_lock); + if (p > page + PAGE_SIZE) + p = page + PAGE_SIZE; + + *start = page + off; + + len = p - page; + if (len > off) + len -= off; + else + len = 0; + + return len < count ? len : count; +} + +static int binder_read_proc_transactions( + char *page, char **start, off_t off, int count, int *eof, void *data) +{ + struct binder_proc *proc; + struct hlist_node *pos; + int len = 0; + char *buf = page; + char *end = page + PAGE_SIZE; + int do_lock = !binder_debug_no_lock; + + if (off) + return 0; + + if (do_lock) + mutex_lock(&binder_lock); + + buf += snprintf(buf, end - buf, "binder transactions:\n"); + hlist_for_each_entry(proc, pos, &binder_procs, proc_node) { + if (buf >= end) + break; + buf = print_binder_proc(buf, end, proc, 0); + } + if (do_lock) + mutex_unlock(&binder_lock); + if (buf > page + PAGE_SIZE) + buf = page + PAGE_SIZE; + + *start = page + off; + + len = buf - page; + if (len > off) + len -= off; + else + len = 0; + + return len < count ? len : count; +} + +static int binder_read_proc_proc( + char *page, char **start, off_t off, int count, int *eof, void *data) +{ + struct binder_proc *proc = data; + int len = 0; + char *p = page; + int do_lock = !binder_debug_no_lock; + + if (off) + return 0; + + if (do_lock) + mutex_lock(&binder_lock); + p += snprintf(p, PAGE_SIZE, "binder proc state:\n"); + p = print_binder_proc(p, page + PAGE_SIZE, proc, 1); + if (do_lock) + mutex_unlock(&binder_lock); + + if (p > page + PAGE_SIZE) + p = page + PAGE_SIZE; + *start = page + off; + + len = p - page; + if (len > off) + len -= off; + else + len = 0; + + return len < count ? len : count; +} + +static char *print_binder_transaction_log_entry(char *buf, char *end, struct binder_transaction_log_entry *e) +{ + buf += snprintf(buf, end - buf, "%d: %s from %d:%d to %d:%d node %d handle %d size %d:%d\n", + e->debug_id, (e->call_type == 2) ? "reply" : + ((e->call_type == 1) ? "async" : "call "), e->from_proc, + e->from_thread, e->to_proc, e->to_thread, e->to_node, + e->target_handle, e->data_size, e->offsets_size); + return buf; +} + +static int binder_read_proc_transaction_log( + char *page, char **start, off_t off, int count, int *eof, void *data) +{ + struct binder_transaction_log *log = data; + int len = 0; + int i; + char *buf = page; + char *end = page + PAGE_SIZE; + + if (off) + return 0; + + if (log->full) { + for (i = log->next; i < ARRAY_SIZE(log->entry); i++) { + if (buf >= end) + break; + buf = print_binder_transaction_log_entry(buf, end, &log->entry[i]); + } + } + for (i = 0; i < log->next; i++) { + if (buf >= end) + break; + buf = print_binder_transaction_log_entry(buf, end, &log->entry[i]); + } + + *start = page + off; + + len = buf - page; + if (len > off) + len -= off; + else + len = 0; + + return len < count ? len : count; +} + +static struct file_operations binder_fops = { + .owner = THIS_MODULE, + .poll = binder_poll, + .unlocked_ioctl = binder_ioctl, + .mmap = binder_mmap, + .open = binder_open, + .flush = binder_flush, + .release = binder_release, +}; + +static struct miscdevice binder_miscdev = { + .minor = MISC_DYNAMIC_MINOR, + .name = "binder", + .fops = &binder_fops +}; + +static int __init binder_init(void) +{ + int ret; + + binder_proc_dir_entry_root = proc_mkdir("binder", NULL); + if (binder_proc_dir_entry_root) + binder_proc_dir_entry_proc = proc_mkdir("proc", binder_proc_dir_entry_root); + ret = misc_register(&binder_miscdev); + if (binder_proc_dir_entry_root) { + create_proc_read_entry("state", S_IRUGO, binder_proc_dir_entry_root, binder_read_proc_state, NULL); + create_proc_read_entry("stats", S_IRUGO, binder_proc_dir_entry_root, binder_read_proc_stats, NULL); + create_proc_read_entry("transactions", S_IRUGO, binder_proc_dir_entry_root, binder_read_proc_transactions, NULL); + create_proc_read_entry("transaction_log", S_IRUGO, binder_proc_dir_entry_root, binder_read_proc_transaction_log, &binder_transaction_log); + create_proc_read_entry("failed_transaction_log", S_IRUGO, binder_proc_dir_entry_root, binder_read_proc_transaction_log, &binder_transaction_log_failed); + } + return ret; +} + +device_initcall(binder_init); + diff --git a/drivers/android/logger.c b/drivers/android/logger.c new file mode 100644 index 00000000000..05dac301c90 --- /dev/null +++ b/drivers/android/logger.c @@ -0,0 +1,607 @@ +/* + * drivers/android/logger.c + * + * Android Logging Subsystem + * + * Copyright (C) 2007-2008 Google, Inc. + * + * Robert Love <rlove@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/module.h> +#include <linux/fs.h> +#include <linux/miscdevice.h> +#include <linux/uaccess.h> +#include <linux/poll.h> +#include <linux/time.h> +#include <linux/logger.h> + +#include <asm/ioctls.h> + +/* + * struct logger_log - represents a specific log, such as 'main' or 'radio' + * + * This structure lives from module insertion until module removal, so it does + * not need additional reference counting. The structure is protected by the + * mutex 'mutex'. + */ +struct logger_log { + unsigned char * buffer; /* the ring buffer itself */ + struct miscdevice misc; /* misc device representing the log */ + wait_queue_head_t wq; /* wait queue for readers */ + struct list_head readers; /* this log's readers */ + struct mutex mutex; /* mutex protecting buffer */ + size_t w_off; /* current write head offset */ + size_t head; /* new readers start here */ + size_t size; /* size of the log */ +}; + +/* + * struct logger_reader - a logging device open for reading + * + * This object lives from open to release, so we don't need additional + * reference counting. The structure is protected by log->mutex. + */ +struct logger_reader { + struct logger_log * log; /* associated log */ + struct list_head list; /* entry in logger_log's list */ + size_t r_off; /* current read head offset */ +}; + +/* logger_offset - returns index 'n' into the log via (optimized) modulus */ +#define logger_offset(n) ((n) & (log->size - 1)) + +/* + * file_get_log - Given a file structure, return the associated log + * + * This isn't aesthetic. We have several goals: + * + * 1) Need to quickly obtain the associated log during an I/O operation + * 2) Readers need to maintain state (logger_reader) + * 3) Writers need to be very fast (open() should be a near no-op) + * + * In the reader case, we can trivially go file->logger_reader->logger_log. + * For a writer, we don't want to maintain a logger_reader, so we just go + * file->logger_log. Thus what file->private_data points at depends on whether + * or not the file was opened for reading. This function hides that dirtiness. + */ +static inline struct logger_log * file_get_log(struct file *file) +{ + if (file->f_mode & FMODE_READ) { + struct logger_reader *reader = file->private_data; + return reader->log; + } else + return file->private_data; +} + +/* + * get_entry_len - Grabs the length of the payload of the next entry starting + * from 'off'. + * + * Caller needs to hold log->mutex. + */ +static __u32 get_entry_len(struct logger_log *log, size_t off) +{ + __u16 val; + + switch (log->size - off) { + case 1: + memcpy(&val, log->buffer + off, 1); + memcpy(((char *) &val) + 1, log->buffer, 1); + break; + default: + memcpy(&val, log->buffer + off, 2); + } + + return sizeof(struct logger_entry) + val; +} + +/* + * do_read_log_to_user - reads exactly 'count' bytes from 'log' into the + * user-space buffer 'buf'. Returns 'count' on success. + * + * Caller must hold log->mutex. + */ +static ssize_t do_read_log_to_user(struct logger_log *log, + struct logger_reader *reader, + char __user *buf, + size_t count) +{ + size_t len; + + /* + * We read from the log in two disjoint operations. First, we read from + * the current read head offset up to 'count' bytes or to the end of + * the log, whichever comes first. + */ + len = min(count, log->size - reader->r_off); + if (copy_to_user(buf, log->buffer + reader->r_off, len)) + return -EFAULT; + + /* + * Second, we read any remaining bytes, starting back at the head of + * the log. + */ + if (count != len) + if (copy_to_user(buf + len, log->buffer, count - len)) + return -EFAULT; + + reader->r_off = logger_offset(reader->r_off + count); + + return count; +} + +/* + * logger_read - our log's read() method + * + * Behavior: + * + * - O_NONBLOCK works + * - If there are no log entries to read, blocks until log is written to + * - Atomically reads exactly one log entry + * + * Optimal read size is LOGGER_ENTRY_MAX_LEN. Will set errno to EINVAL if read + * buffer is insufficient to hold next entry. + */ +static ssize_t logger_read(struct file *file, char __user *buf, + size_t count, loff_t *pos) +{ + struct logger_reader *reader = file->private_data; + struct logger_log *log = reader->log; + ssize_t ret; + DEFINE_WAIT(wait); + +start: + while (1) { + prepare_to_wait(&log->wq, &wait, TASK_INTERRUPTIBLE); + + mutex_lock(&log->mutex); + ret = (log->w_off == reader->r_off); + mutex_unlock(&log->mutex); + if (!ret) + break; + + if (file->f_flags & O_NONBLOCK) { + ret = -EAGAIN; + break; + } + + if (signal_pending(current)) { + ret = -EINTR; + break; + } + + schedule(); + } + + finish_wait(&log->wq, &wait); + if (ret) + return ret; + + mutex_lock(&log->mutex); + + /* is there still something to read or did we race? */ + if (unlikely(log->w_off == reader->r_off)) { + mutex_unlock(&log->mutex); + goto start; + } + + /* get the size of the next entry */ + ret = get_entry_len(log, reader->r_off); + if (count < ret) { + ret = -EINVAL; + goto out; + } + + /* get exactly one entry from the log */ + ret = do_read_log_to_user(log, reader, buf, ret); + +out: + mutex_unlock(&log->mutex); + + return ret; +} + +/* + * get_next_entry - return the offset of the first valid entry at least 'len' + * bytes after 'off'. + * + * Caller must hold log->mutex. + */ +static size_t get_next_entry(struct logger_log *log, size_t off, size_t len) +{ + size_t count = 0; + + do { + size_t nr = get_entry_len(log, off); + off = logger_offset(off + nr); + count += nr; + } while (count < len); + + return off; +} + +/* + * clock_interval - is a < c < b in mod-space? Put another way, does the line + * from a to b cross c? + */ +static inline int clock_interval(size_t a, size_t b, size_t c) +{ + if (b < a) { + if (a < c || b >= c) + return 1; + } else { + if (a < c && b >= c) + return 1; + } + + return 0; +} + +/* + * fix_up_readers - walk the list of all readers and "fix up" any who were + * lapped by the writer; also do the same for the default "start head". + * We do this by "pulling forward" the readers and start head to the first + * entry after the new write head. + * + * The caller needs to hold log->mutex. + */ +static void fix_up_readers(struct logger_log *log, size_t len) +{ + size_t old = log->w_off; + size_t new = logger_offset(old + len); + struct logger_reader *reader; + + if (clock_interval(old, new, log->head)) + log->head = get_next_entry(log, log->head, len); + + list_for_each_entry(reader, &log->readers, list) + if (clock_interval(old, new, reader->r_off)) + reader->r_off = get_next_entry(log, reader->r_off, len); +} + +/* + * do_write_log - writes 'len' bytes from 'buf' to 'log' + * + * The caller needs to hold log->mutex. + */ +static void do_write_log(struct logger_log *log, const void *buf, size_t count) +{ + size_t len; + + len = min(count, log->size - log->w_off); + memcpy(log->buffer + log->w_off, buf, len); + + if (count != len) + memcpy(log->buffer, buf + len, count - len); + + log->w_off = logger_offset(log->w_off + count); + +} + +/* + * do_write_log_user - writes 'len' bytes from the user-space buffer 'buf' to + * the log 'log' + * + * The caller needs to hold log->mutex. + * + * Returns 'count' on success, negative error code on failure. + */ +static ssize_t do_write_log_from_user(struct logger_log *log, + const void __user *buf, size_t count) +{ + size_t len; + + len = min(count, log->size - log->w_off); + if (len && copy_from_user(log->buffer + log->w_off, buf, len)) + return -EFAULT; + + if (count != len) + if (copy_from_user(log->buffer, buf + len, count - len)) + return -EFAULT; + + log->w_off = logger_offset(log->w_off + count); + + return count; +} + +/* + * logger_aio_write - our write method, implementing support for write(), + * writev(), and aio_write(). Writes are our fast path, and we try to optimize + * them above all else. + */ +ssize_t logger_aio_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t ppos) +{ + struct logger_log *log = file_get_log(iocb->ki_filp); + size_t orig = log->w_off; + struct logger_entry header; + struct timespec now; + ssize_t ret = 0; + + now = current_kernel_time(); + + header.pid = current->tgid; + header.tid = current->pid; + header.sec = now.tv_sec; + header.nsec = now.tv_nsec; + header.len = min_t(size_t, iocb->ki_left, LOGGER_ENTRY_MAX_PAYLOAD); + + /* null writes succeed, return zero */ + if (unlikely(!header.len)) + return 0; + + mutex_lock(&log->mutex); + + /* + * Fix up any readers, pulling them forward to the first readable + * entry after (what will be) the new write offset. We do this now + * because if we partially fail, we can end up with clobbered log + * entries that encroach on readable buffer. + */ + fix_up_readers(log, sizeof(struct logger_entry) + header.len); + + do_write_log(log, &header, sizeof(struct logger_entry)); + + while (nr_segs-- > 0) { + size_t len; + ssize_t nr; + + /* figure out how much of this vector we can keep */ + len = min_t(size_t, iov->iov_len, header.len - ret); + + /* write out this segment's payload */ + nr = do_write_log_from_user(log, iov->iov_base, len); + if (unlikely(nr < 0)) { + log->w_off = orig; + mutex_unlock(&log->mutex); + return nr; + } + + iov++; + ret += nr; + } + + mutex_unlock(&log->mutex); + + /* wake up any blocked readers */ + wake_up_interruptible(&log->wq); + + return ret; +} + +static struct logger_log * get_log_from_minor(int); + +/* + * logger_open - the log's open() file operation + * + * Note how near a no-op this is in the write-only case. Keep it that way! + */ +static int logger_open(struct inode *inode, struct file *file) +{ + struct logger_log *log; + int ret; + + ret = nonseekable_open(inode, file); + if (ret) + return ret; + + log = get_log_from_minor(MINOR(inode->i_rdev)); + if (!log) + return -ENODEV; + + if (file->f_mode & FMODE_READ) { + struct logger_reader *reader; + + reader = kmalloc(sizeof(struct logger_reader), GFP_KERNEL); + if (!reader) + return -ENOMEM; + + reader->log = log; + INIT_LIST_HEAD(&reader->list); + + mutex_lock(&log->mutex); + reader->r_off = log->head; + list_add_tail(&reader->list, &log->readers); + mutex_unlock(&log->mutex); + + file->private_data = reader; + } else + file->private_data = log; + + return 0; +} + +/* + * logger_release - the log's release file operation + * + * Note this is a total no-op in the write-only case. Keep it that way! + */ +static int logger_release(struct inode *ignored, struct file *file) +{ + if (file->f_mode & FMODE_READ) { + struct logger_reader *reader = file->private_data; + list_del(&reader->list); + kfree(reader); + } + + return 0; +} + +/* + * logger_poll - the log's poll file operation, for poll/select/epoll + * + * Note we always return POLLOUT, because you can always write() to the log. + * Note also that, strictly speaking, a return value of POLLIN does not + * guarantee that the log is readable without blocking, as there is a small + * chance that the writer can lap the reader in the interim between poll() + * returning and the read() request. + */ +static unsigned int logger_poll(struct file *file, poll_table *wait) +{ + struct logger_reader *reader; + struct logger_log *log; + unsigned int ret = POLLOUT | POLLWRNORM; + + if (!(file->f_mode & FMODE_READ)) + return ret; + + reader = file->private_data; + log = reader->log; + + poll_wait(file, &log->wq, wait); + + mutex_lock(&log->mutex); + if (log->w_off != reader->r_off) + ret |= POLLIN | POLLRDNORM; + mutex_unlock(&log->mutex); + + return ret; +} + +static long logger_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + struct logger_log *log = file_get_log(file); + struct logger_reader *reader; + long ret = -ENOTTY; + + mutex_lock(&log->mutex); + + switch (cmd) { + case LOGGER_GET_LOG_BUF_SIZE: + ret = log->size; + break; + case LOGGER_GET_LOG_LEN: + if (!(file->f_mode & FMODE_READ)) { + ret = -EBADF; + break; + } + reader = file->private_data; + if (log->w_off >= reader->r_off) + ret = log->w_off - reader->r_off; + else + ret = (log->size - reader->r_off) + log->w_off; + break; + case LOGGER_GET_NEXT_ENTRY_LEN: + if (!(file->f_mode & FMODE_READ)) { + ret = -EBADF; + break; + } + reader = file->private_data; + if (log->w_off != reader->r_off) + ret = get_entry_len(log, reader->r_off); + else + ret = 0; + break; + case LOGGER_FLUSH_LOG: + if (!(file->f_mode & FMODE_WRITE)) { + ret = -EBADF; + break; + } + list_for_each_entry(reader, &log->readers, list) + reader->r_off = log->w_off; + log->head = log->w_off; + ret = 0; + break; + } + + mutex_unlock(&log->mutex); + + return ret; +} + +static struct file_operations logger_fops = { + .owner = THIS_MODULE, + .read = logger_read, + .aio_write = logger_aio_write, + .poll = logger_poll, + .unlocked_ioctl = logger_ioctl, + .compat_ioctl = logger_ioctl, + .open = logger_open, + .release = logger_release, +}; + +/* + * Defines a log structure with name 'NAME' and a size of 'SIZE' bytes, which + * must be a power of two, greater than LOGGER_ENTRY_MAX_LEN, and less than + * LONG_MAX minus LOGGER_ENTRY_MAX_LEN. + */ +#define DEFINE_LOGGER_DEVICE(VAR, NAME, SIZE) \ +static unsigned char _buf_ ## VAR[SIZE]; \ +static struct logger_log VAR = { \ + .buffer = _buf_ ## VAR, \ + .misc = { \ + .minor = MISC_DYNAMIC_MINOR, \ + .name = NAME, \ + .fops = &logger_fops, \ + .parent = NULL, \ + }, \ + .wq = __WAIT_QUEUE_HEAD_INITIALIZER(VAR .wq), \ + .readers = LIST_HEAD_INIT(VAR .readers), \ + .mutex = __MUTEX_INITIALIZER(VAR .mutex), \ + .w_off = 0, \ + .head = 0, \ + .size = SIZE, \ +}; + +DEFINE_LOGGER_DEVICE(log_main, LOGGER_LOG_MAIN, 64*1024) +DEFINE_LOGGER_DEVICE(log_events, LOGGER_LOG_EVENTS, 256*1024) +DEFINE_LOGGER_DEVICE(log_radio, LOGGER_LOG_RADIO, 64*1024) + +static struct logger_log * get_log_from_minor(int minor) +{ + if (log_main.misc.minor == minor) + return &log_main; + if (log_events.misc.minor == minor) + return &log_events; + if (log_radio.misc.minor == minor) + return &log_radio; + return NULL; +} + +static int __init init_log(struct logger_log *log) +{ + int ret; + + ret = misc_register(&log->misc); + if (unlikely(ret)) { + printk(KERN_ERR "logger: failed to register misc " + "device for log '%s'!\n", log->misc.name); + return ret; + } + + printk(KERN_INFO "logger: created %luK log '%s'\n", + (unsigned long) log->size >> 10, log->misc.name); + + return 0; +} + +static int __init logger_init(void) +{ + int ret; + + ret = init_log(&log_main); + if (unlikely(ret)) + goto out; + + ret = init_log(&log_events); + if (unlikely(ret)) + goto out; + + ret = init_log(&log_radio); + if (unlikely(ret)) + goto out; + +out: + return ret; +} +device_initcall(logger_init); diff --git a/drivers/android/power.c b/drivers/android/power.c new file mode 100644 index 00000000000..6c773ab1cde --- /dev/null +++ b/drivers/android/power.c @@ -0,0 +1,1336 @@ +/* drivers/android/power.c + * + * Copyright (C) 2005-2008 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/list.h> +#include <linux/module.h> +#include <linux/miscdevice.h> +//#include <linux/platform_device.h> +#include <linux/sysdev.h> +#include <linux/fs.h> +#include <linux/poll.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/clk.h> +#include <linux/rtc.h> +#include <linux/wait.h> +#include <linux/android_power.h> +#include <linux/suspend.h> +#include <linux/syscalls.h> // sys_sync +#include <linux/console.h> +#include <linux/kbd_kern.h> +#include <linux/vt_kern.h> +#include <linux/freezer.h> +#ifdef CONFIG_ANDROID_POWER_STAT +#include <linux/proc_fs.h> +#endif + +enum { + ANDROID_POWER_DEBUG_USER_STATE = 1U << 0, + ANDROID_POWER_DEBUG_EXIT_SUSPEND = 1U << 1, + ANDROID_POWER_DEBUG_SUSPEND = 1U << 2, + ANDROID_POWER_DEBUG_USER_WAKE_LOCK = 1U << 3, + ANDROID_POWER_DEBUG_WAKE_LOCK = 1U << 4, +}; +static int android_power_debug_mask = + ANDROID_POWER_DEBUG_USER_STATE | ANDROID_POWER_DEBUG_EXIT_SUSPEND; +module_param_named(debug_mask, android_power_debug_mask, + int, S_IRUGO | S_IWUSR | S_IWGRP); + +#define ANDROID_POWER_TEST_EARLY_SUSPEND 0 + +MODULE_DESCRIPTION("OMAP CSMI Driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION("1.0"); + +#define ANDROID_SUSPEND_CONSOLE (MAX_NR_CONSOLES-2) + +static spinlock_t g_list_lock = SPIN_LOCK_UNLOCKED; +static DEFINE_MUTEX(g_early_suspend_lock); + +wait_queue_head_t g_wait_queue; + +static LIST_HEAD(g_inactive_locks); +static LIST_HEAD(g_active_idle_wake_locks); +static LIST_HEAD(g_active_partial_wake_locks); +static LIST_HEAD(g_active_full_wake_locks); +static LIST_HEAD(g_early_suspend_handlers); +static enum { + USER_AWAKE, + USER_NOTIFICATION, + USER_SLEEP +} g_user_suspend_state; +static int g_current_event_num; +static struct workqueue_struct *g_suspend_work_queue; +static void android_power_suspend(struct work_struct *work); +static void android_power_wakeup_locked(int notification, ktime_t time); +static DECLARE_WORK(g_suspend_work, android_power_suspend); +static int g_max_user_lockouts = 16; + +//static const char g_free_user_lockout_name[] = "free_user"; +static struct { + enum { + USER_WAKE_LOCK_INACTIVE, + USER_WAKE_LOCK_PARTIAL, + USER_WAKE_LOCK_FULL + } state; + android_suspend_lock_t suspend_lock; + char name_buffer[32]; +} *g_user_wake_locks; +#ifdef CONFIG_ANDROID_POWER_STAT +android_suspend_lock_t g_deleted_wake_locks; +android_suspend_lock_t g_no_wake_locks; +#endif +static struct kobject *android_power_kobj; +#ifndef CONFIG_FRAMEBUFFER_CONSOLE +static wait_queue_head_t fb_state_wq; +static spinlock_t fb_state_lock = SPIN_LOCK_UNLOCKED; +int fb_state; +#endif + +#if 0 +android_suspend_lock_t *android_allocate_suspend_lock(const char *debug_name) +{ + unsigned long irqflags; + struct android_power *e; + + e = kzalloc(sizeof(*e), GFP_KERNEL); + if(e == NULL) { + printk("android_power_allocate: kzalloc failed\n"); + return NULL; + } + e->name = debug_name; + spin_lock_irqsave(&g_list_lock, irqflags); + list_add(&e->link, &g_allocated); + spin_unlock_irqrestore(&g_list_lock, irqflags); + return e; +} +#endif + +static int android_init_suspend_lock_internal( + android_suspend_lock_t *lock, int has_spin_lock) +{ + unsigned long irqflags; + + if(lock->name == NULL) { + printk(KERN_ERR "android_init_suspend_lock: error name=NULL, " + "lock=%p\n", lock); + dump_stack(); + return -EINVAL; + } + + if (android_power_debug_mask & ANDROID_POWER_DEBUG_WAKE_LOCK) + printk(KERN_INFO "android_init_suspend_lock name=%s\n", + lock->name); +#ifdef CONFIG_ANDROID_POWER_STAT + lock->stat.count = 0; + lock->stat.expire_count = 0; + lock->stat.total_time = ktime_set(0, 0); + lock->stat.max_time = ktime_set(0, 0); + lock->stat.last_time = ktime_set(0, 0); +#endif + lock->flags = 0; + + INIT_LIST_HEAD(&lock->link); + if (!has_spin_lock) + spin_lock_irqsave(&g_list_lock, irqflags); + list_add(&lock->link, &g_inactive_locks); + if (!has_spin_lock) + spin_unlock_irqrestore(&g_list_lock, irqflags); +// if(lock->flags & ANDROID_SUSPEND_LOCK_FLAG_USER_VISIBLE_MASK) { +// sysfs_create_file(struct kobject * k, const struct attribute * a) +// } + return 0; +} + +int android_init_suspend_lock(android_suspend_lock_t *lock) +{ + return android_init_suspend_lock_internal(lock, 0); +} + +void android_uninit_suspend_lock(android_suspend_lock_t *lock) +{ + unsigned long irqflags; + if (android_power_debug_mask & ANDROID_POWER_DEBUG_WAKE_LOCK) + printk(KERN_INFO "android_uninit_suspend_lock name=%s\n", + lock->name); + spin_lock_irqsave(&g_list_lock, irqflags); +#ifdef CONFIG_ANDROID_POWER_STAT + if(lock->stat.count) { + if(g_deleted_wake_locks.stat.count == 0) { + g_deleted_wake_locks.name = "deleted_wake_locks"; + android_init_suspend_lock_internal( + &g_deleted_wake_locks, 1); + } + g_deleted_wake_locks.stat.count += lock->stat.count; + g_deleted_wake_locks.stat.expire_count += lock->stat.expire_count; + g_deleted_wake_locks.stat.total_time = ktime_add(g_deleted_wake_locks.stat.total_time, lock->stat.total_time); + g_deleted_wake_locks.stat.max_time = ktime_add(g_deleted_wake_locks.stat.max_time, lock->stat.max_time); + } +#endif + list_del(&lock->link); + spin_unlock_irqrestore(&g_list_lock, irqflags); +} + +void android_lock_idle(android_suspend_lock_t *lock) +{ + unsigned long irqflags; + spin_lock_irqsave(&g_list_lock, irqflags); +#ifdef CONFIG_ANDROID_POWER_STAT + if(!(lock->flags & ANDROID_SUSPEND_LOCK_ACTIVE)) { + lock->flags |= ANDROID_SUSPEND_LOCK_ACTIVE; + lock->stat.last_time = ktime_get(); + } +#endif + if (android_power_debug_mask & ANDROID_POWER_DEBUG_WAKE_LOCK) + printk(KERN_INFO "android_power: acquire idle wake lock: %s\n", + lock->name); + lock->expires = INT_MAX; + lock->flags &= ~ANDROID_SUSPEND_LOCK_AUTO_EXPIRE; + list_del(&lock->link); + list_add(&lock->link, &g_active_idle_wake_locks); + spin_unlock_irqrestore(&g_list_lock, irqflags); +} + +void android_lock_idle_auto_expire(android_suspend_lock_t *lock, int timeout) +{ + unsigned long irqflags; + spin_lock_irqsave(&g_list_lock, irqflags); +#ifdef CONFIG_ANDROID_POWER_STAT + if(!(lock->flags & ANDROID_SUSPEND_LOCK_ACTIVE)) { + lock->flags |= ANDROID_SUSPEND_LOCK_ACTIVE; + lock->stat.last_time = ktime_get(); + } +#endif + if (android_power_debug_mask & ANDROID_POWER_DEBUG_WAKE_LOCK) + printk(KERN_INFO "android_power: acquire idle wake lock: %s, " + "timeout %d.%03lu\n", lock->name, timeout / HZ, + (timeout % HZ) * MSEC_PER_SEC / HZ); + lock->expires = jiffies + timeout; + lock->flags |= ANDROID_SUSPEND_LOCK_AUTO_EXPIRE; + list_del(&lock->link); + list_add(&lock->link, &g_active_idle_wake_locks); + spin_unlock_irqrestore(&g_list_lock, irqflags); +} + +void android_lock_suspend(android_suspend_lock_t *lock) +{ + unsigned long irqflags; + spin_lock_irqsave(&g_list_lock, irqflags); +#ifdef CONFIG_ANDROID_POWER_STAT + if(!(lock->flags & ANDROID_SUSPEND_LOCK_ACTIVE)) { + lock->flags |= ANDROID_SUSPEND_LOCK_ACTIVE; + lock->stat.last_time = ktime_get(); + } +#endif + if (android_power_debug_mask & ANDROID_POWER_DEBUG_WAKE_LOCK) + printk(KERN_INFO "android_power: acquire wake lock: %s\n", + lock->name); + lock->expires = INT_MAX; + lock->flags &= ~ANDROID_SUSPEND_LOCK_AUTO_EXPIRE; + list_del(&lock->link); + list_add(&lock->link, &g_active_partial_wake_locks); + g_current_event_num++; + spin_unlock_irqrestore(&g_list_lock, irqflags); +} + +void android_lock_suspend_auto_expire(android_suspend_lock_t *lock, int timeout) +{ + unsigned long irqflags; + spin_lock_irqsave(&g_list_lock, irqflags); +#ifdef CONFIG_ANDROID_POWER_STAT + if(!(lock->flags & ANDROID_SUSPEND_LOCK_ACTIVE)) { + lock->flags |= ANDROID_SUSPEND_LOCK_ACTIVE; + lock->stat.last_time = ktime_get(); + } +#endif + if (android_power_debug_mask & ANDROID_POWER_DEBUG_WAKE_LOCK) + printk(KERN_INFO "android_power: acquire wake lock: %s, " + "timeout %d.%03lu\n", lock->name, timeout / HZ, + (timeout % HZ) * MSEC_PER_SEC / HZ); + lock->expires = jiffies + timeout; + lock->flags |= ANDROID_SUSPEND_LOCK_AUTO_EXPIRE; + list_del(&lock->link); + list_add(&lock->link, &g_active_partial_wake_locks); + g_current_event_num++; + wake_up(&g_wait_queue); + spin_unlock_irqrestore(&g_list_lock, irqflags); +} + +void android_lock_partial_suspend_auto_expire(android_suspend_lock_t *lock, int timeout) +{ + unsigned long irqflags; + spin_lock_irqsave(&g_list_lock, irqflags); +#ifdef CONFIG_ANDROID_POWER_STAT + if(!(lock->flags & ANDROID_SUSPEND_LOCK_ACTIVE)) { + lock->flags |= ANDROID_SUSPEND_LOCK_ACTIVE; + lock->stat.last_time = ktime_get(); + } +#endif + if (android_power_debug_mask & ANDROID_POWER_DEBUG_WAKE_LOCK) + printk(KERN_INFO "android_power: acquire full wake lock: %s, " + "timeout %d.%03lu\n", lock->name, timeout / HZ, + (timeout % HZ) * MSEC_PER_SEC / HZ); + lock->expires = jiffies + timeout; + lock->flags |= ANDROID_SUSPEND_LOCK_AUTO_EXPIRE; + list_del(&lock->link); + list_add(&lock->link, &g_active_full_wake_locks); + g_current_event_num++; + wake_up(&g_wait_queue); + android_power_wakeup_locked(1, ktime_get()); + spin_unlock_irqrestore(&g_list_lock, irqflags); +} + +#ifdef CONFIG_ANDROID_POWER_STAT +static int print_lock_stat(char *buf, android_suspend_lock_t *lock) +{ + ktime_t active_time; + if(lock->flags & ANDROID_SUSPEND_LOCK_ACTIVE) + active_time = ktime_sub(ktime_get(), lock->stat.last_time); + else + active_time = ktime_set(0, 0); + return sprintf(buf, "\"%s\"\t%d\t%d\t%lld\t%lld\t%lld\t%lld\n", + lock->name, + lock->stat.count, lock->stat.expire_count, + ktime_to_ns(active_time), + ktime_to_ns(lock->stat.total_time), + ktime_to_ns(lock->stat.max_time), + ktime_to_ns(lock->stat.last_time)); +} + + +static int wakelocks_read_proc(char *page, char **start, off_t off, + int count, int *eof, void *data) +{ + unsigned long irqflags; + android_suspend_lock_t *lock; + int len = 0; + char *p = page; + + spin_lock_irqsave(&g_list_lock, irqflags); + + p += sprintf(p, "name\tcount\texpire_count\tactive_since\ttotal_time\tmax_time\tlast_change\n"); + list_for_each_entry(lock, &g_inactive_locks, link) { + p += print_lock_stat(p, lock); + } + list_for_each_entry(lock, &g_active_partial_wake_locks, link) { + p += print_lock_stat(p, lock); + } + list_for_each_entry(lock, &g_active_full_wake_locks, link) { + p += print_lock_stat(p, lock); + } + spin_unlock_irqrestore(&g_list_lock, irqflags); + + + *start = page + off; + + len = p - page; + if (len > off) + len -= off; + else + len = 0; + + return len < count ? len : count; +} + +static void android_unlock_suspend_stat_locked(android_suspend_lock_t *lock) +{ + if(lock->flags & ANDROID_SUSPEND_LOCK_ACTIVE) { + ktime_t duration; + lock->flags &= ~ANDROID_SUSPEND_LOCK_ACTIVE; + lock->stat.count++; + duration = ktime_sub(ktime_get(), lock->stat.last_time); + lock->stat.total_time = ktime_add(lock->stat.total_time, duration); + if(ktime_to_ns(duration) > ktime_to_ns(lock->stat.max_time)) + lock->stat.max_time = duration; + lock->stat.last_time = ktime_get(); + } +} +#endif + +void android_unlock_suspend(android_suspend_lock_t *lock) +{ + int had_full_wake_locks; + unsigned long irqflags; + spin_lock_irqsave(&g_list_lock, irqflags); +#ifdef CONFIG_ANDROID_POWER_STAT + android_unlock_suspend_stat_locked(lock); +#endif + if (android_power_debug_mask & ANDROID_POWER_DEBUG_WAKE_LOCK) + printk(KERN_INFO "android_power: release wake lock: %s\n", + lock->name); + lock->flags &= ~ANDROID_SUSPEND_LOCK_AUTO_EXPIRE; + had_full_wake_locks = !list_empty(&g_active_full_wake_locks); + list_del(&lock->link); + list_add(&lock->link, &g_inactive_locks); + wake_up(&g_wait_queue); + if(had_full_wake_locks && list_empty(&g_active_full_wake_locks)) { + printk("android_unlock_suspend: released at %lld\n", ktime_to_ns(ktime_get())); + if(g_user_suspend_state == USER_NOTIFICATION) { + printk("android sleep state %d->%d at %lld\n", g_user_suspend_state, USER_SLEEP, ktime_to_ns(ktime_get())); + g_user_suspend_state = USER_SLEEP; + queue_work(g_suspend_work_queue, &g_suspend_work); + } + } + spin_unlock_irqrestore(&g_list_lock, irqflags); +} + +static void android_power_wakeup_locked(int notification, ktime_t time) +{ + int new_state = (notification == 0) ? USER_AWAKE : USER_NOTIFICATION; + + if (android_power_debug_mask & ANDROID_POWER_DEBUG_USER_STATE) { + struct timespec ts; + struct rtc_time tm; + getnstimeofday(&ts); + rtc_time_to_tm(ts.tv_sec, &tm); + printk(KERN_INFO "android_power: wakeup (%d->%d) at %lld " + "(%d-%02d-%02d %02d:%02d:%02d.%09lu UTC)\n", + g_user_suspend_state, new_state, ktime_to_ns(time), + tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, + tm.tm_hour, tm.tm_min, tm.tm_sec, ts.tv_nsec); + } + + if(new_state >= g_user_suspend_state) { + return; + } + g_user_suspend_state = new_state; + g_current_event_num++; + wake_up(&g_wait_queue); +} + +static void android_power_wakeup(void) +{ + unsigned long irqflags; + + ktime_t ktime_now; + + spin_lock_irqsave(&g_list_lock, irqflags); + ktime_now = ktime_get(); + android_power_wakeup_locked(0, ktime_now); + spin_unlock_irqrestore(&g_list_lock, irqflags); +} + +static void android_power_request_sleep(void) +{ + unsigned long irqflags; + int already_suspended; + android_suspend_lock_t *lock, *next_lock; + + if (android_power_debug_mask & ANDROID_POWER_DEBUG_USER_STATE) { + ktime_t ktime_now; + struct timespec ts; + struct rtc_time tm; + ktime_now = ktime_get(); + getnstimeofday(&ts); + rtc_time_to_tm(ts.tv_sec, &tm); + printk(KERN_INFO "android_power: sleep (%d->%d) at %lld " + "(%d-%02d-%02d %02d:%02d:%02d.%09lu UTC)\n", + g_user_suspend_state, USER_SLEEP, ktime_to_ns(ktime_now), + tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, + tm.tm_hour, tm.tm_min, tm.tm_sec, ts.tv_nsec); + } + + spin_lock_irqsave(&g_list_lock, irqflags); + already_suspended = g_user_suspend_state == USER_SLEEP; + if(!already_suspended) { + g_user_suspend_state = USER_SLEEP; + } + + list_for_each_entry_safe(lock, next_lock, &g_active_full_wake_locks, link) { +#ifdef CONFIG_ANDROID_POWER_STAT + android_unlock_suspend_stat_locked(lock); +#endif + list_del(&lock->link); + list_add(&lock->link, &g_inactive_locks); + printk("android_power_suspend: aborted full wake lock %s\n", lock->name); + } + spin_unlock_irqrestore(&g_list_lock, irqflags); + queue_work(g_suspend_work_queue, &g_suspend_work); +} + +void android_register_early_suspend(android_early_suspend_t *handler) +{ + struct list_head *pos; + + mutex_lock(&g_early_suspend_lock); + list_for_each(pos, &g_early_suspend_handlers) { + android_early_suspend_t *e = list_entry(pos, android_early_suspend_t, link); + if(e->level > handler->level) + break; + } + list_add_tail(&handler->link, pos); + mutex_unlock(&g_early_suspend_lock); +} + +void android_unregister_early_suspend(android_early_suspend_t *handler) +{ + mutex_lock(&g_early_suspend_lock); + list_del(&handler->link); + mutex_unlock(&g_early_suspend_lock); +} + +#ifdef CONFIG_FRAMEBUFFER_CONSOLE +static int orig_fgconsole; +static void console_early_suspend(android_early_suspend_t *h) +{ + acquire_console_sem(); + orig_fgconsole = fg_console; + if (vc_allocate(ANDROID_SUSPEND_CONSOLE)) + goto err; + if (set_console(ANDROID_SUSPEND_CONSOLE)) + goto err; + release_console_sem(); + + if (vt_waitactive(ANDROID_SUSPEND_CONSOLE)) + pr_warning("console_early_suspend: Can't switch VCs.\n"); + return; +err: + pr_warning("console_early_suspend: Can't set console\n"); + release_console_sem(); +} + +static void console_late_resume(android_early_suspend_t *h) +{ + int ret; + acquire_console_sem(); + ret = set_console(orig_fgconsole); + release_console_sem(); + if (ret) { + pr_warning("console_late_resume: Can't set console.\n"); + return; + } + + if (vt_waitactive(orig_fgconsole)) + pr_warning("console_late_resume: Can't switch VCs.\n"); +} + +static android_early_suspend_t console_early_suspend_desc = { + .level = ANDROID_EARLY_SUSPEND_LEVEL_CONSOLE_SWITCH, + .suspend = console_early_suspend, + .resume = console_late_resume, +}; +#else +/* tell userspace to stop drawing, wait for it to stop */ +static void stop_drawing_early_suspend(android_early_suspend_t *h) +{ + int ret; + unsigned long irq_flags; + + spin_lock_irqsave(&fb_state_lock, irq_flags); + fb_state = ANDROID_REQUEST_STOP_DRAWING; + spin_unlock_irqrestore(&fb_state_lock, irq_flags); + + wake_up_all(&fb_state_wq); + ret = wait_event_timeout(fb_state_wq, + fb_state == ANDROID_STOPPED_DRAWING, + HZ); + if (unlikely(fb_state != ANDROID_STOPPED_DRAWING)) + printk(KERN_WARNING "android_power: timeout waiting for " + "userspace to stop drawing\n"); +} + +/* tell userspace to start drawing */ +static void start_drawing_late_resume(android_early_suspend_t *h) +{ + unsigned long irq_flags; + + spin_lock_irqsave(&fb_state_lock, irq_flags); + fb_state = ANDROID_DRAWING_OK; + spin_unlock_irqrestore(&fb_state_lock, irq_flags); + wake_up(&fb_state_wq); +} + +static android_early_suspend_t stop_drawing_early_suspend_desc = { + .level = ANDROID_EARLY_SUSPEND_LEVEL_CONSOLE_SWITCH, + .suspend = stop_drawing_early_suspend, + .resume = start_drawing_late_resume, +}; +#endif + +#if ANDROID_POWER_TEST_EARLY_SUSPEND + +typedef struct +{ + android_early_suspend_t h; + const char *string; +} early_suspend_test_t; + +static void early_suspend_test(android_early_suspend_t *h) +{ + early_suspend_test_t *est = container_of(h, early_suspend_test_t, h); + printk("early suspend %s (l %d)\n", est->string, h->level); +} + +static void late_resume_test(android_early_suspend_t *h) +{ + early_suspend_test_t *est = container_of(h, early_suspend_test_t, h); + printk("late resume %s (l %d)\n", est->string, h->level); +} + +#define EARLY_SUSPEND_TEST_ENTRY(ilevel, istring) \ +{ \ + .h = { \ + .level = ilevel, \ + .suspend = early_suspend_test, \ + .resume = late_resume_test \ + }, \ + .string = istring \ +} +static early_suspend_test_t early_suspend_tests[] = { + EARLY_SUSPEND_TEST_ENTRY(10, "1"), + EARLY_SUSPEND_TEST_ENTRY(5, "2"), + EARLY_SUSPEND_TEST_ENTRY(10, "3"), + EARLY_SUSPEND_TEST_ENTRY(15, "4"), + EARLY_SUSPEND_TEST_ENTRY(8, "5") +}; + +#endif + +static int get_wait_timeout(int print_locks, int state, struct list_head *list_head) +{ + unsigned long irqflags; + android_suspend_lock_t *lock, *next; + int max_timeout = 0; + + spin_lock_irqsave(&g_list_lock, irqflags); + list_for_each_entry_safe(lock, next, list_head, link) { + if(lock->flags & ANDROID_SUSPEND_LOCK_AUTO_EXPIRE) { + int timeout = lock->expires - (int)jiffies; + if(timeout <= 0) { + lock->flags &= ~ANDROID_SUSPEND_LOCK_AUTO_EXPIRE; +#ifdef CONFIG_ANDROID_POWER_STAT + lock->stat.expire_count++; + android_unlock_suspend_stat_locked(lock); +#endif + list_del(&lock->link); + list_add(&lock->link, &g_inactive_locks); + if (android_power_debug_mask & ANDROID_POWER_DEBUG_WAKE_LOCK) + printk("expired wake lock %s\n", lock->name); + } + else { + if(timeout > max_timeout) + max_timeout = timeout; + if(print_locks) + printk("active wake lock %s, time left %d\n", lock->name, timeout); + } + } + else { + if(print_locks) + printk("active wake lock %s\n", lock->name); + } + } + if(g_user_suspend_state != state || list_empty(list_head)) + max_timeout = -1; + spin_unlock_irqrestore(&g_list_lock, irqflags); + return max_timeout; +} + +#ifdef CONFIG_FRAMEBUFFER_CONSOLE +static int android_power_class_suspend(struct sys_device *sdev, pm_message_t state) +{ + int rv = 0; + unsigned long irqflags; + + printk("android_power_suspend: enter\n"); + spin_lock_irqsave(&g_list_lock, irqflags); + if(!list_empty(&g_active_partial_wake_locks)) { + printk("android_power_suspend: abort for partial wakeup\n"); + rv = -EAGAIN; + } + if(g_user_suspend_state != USER_SLEEP) { + printk("android_power_suspend: abort for full wakeup\n"); + rv = -EAGAIN; + } + spin_unlock_irqrestore(&g_list_lock, irqflags); + return rv; +} + +static int android_power_device_suspend(struct sys_device *sdev, pm_message_t state) +{ + int rv = 0; + unsigned long irqflags; + + printk("android_power_device_suspend: enter\n"); + spin_lock_irqsave(&g_list_lock, irqflags); + if(!list_empty(&g_active_partial_wake_locks)) { + printk("android_power_device_suspend: abort for partial wakeup\n"); + rv = -EAGAIN; + } + if(g_user_suspend_state != USER_SLEEP) { + printk("android_power_device_suspend: abort for full wakeup\n"); + rv = -EAGAIN; + } + spin_unlock_irqrestore(&g_list_lock, irqflags); + return rv; +} +#endif + +int android_power_is_driver_suspended(void) +{ + return (get_wait_timeout(0, USER_SLEEP, &g_active_partial_wake_locks) < 0) && (g_user_suspend_state == USER_SLEEP); +} + +int android_power_is_low_power_idle_ok(void) +{ + get_wait_timeout(0, USER_SLEEP, &g_active_idle_wake_locks); + return list_empty(&g_active_idle_wake_locks); +} + +static void android_power_suspend(struct work_struct *work) +{ + int entry_event_num; + int ret; + int wait = 0; + android_early_suspend_t *pos; + int print_locks = 0; + unsigned long irqflags; + + while(g_user_suspend_state != USER_AWAKE) { + while(g_user_suspend_state == USER_NOTIFICATION) { + wait = get_wait_timeout(print_locks, USER_NOTIFICATION, &g_active_full_wake_locks); + if(wait < 0) + break; + if(wait) + wait_event_interruptible_timeout(g_wait_queue, get_wait_timeout(0, USER_NOTIFICATION, &g_active_full_wake_locks) != wait, wait); + } + spin_lock_irqsave(&g_list_lock, irqflags); + if(g_user_suspend_state == USER_NOTIFICATION && list_empty(&g_active_full_wake_locks)) { + printk("android sleep state %d->%d at %lld\n", g_user_suspend_state, USER_SLEEP, ktime_to_ns(ktime_get())); + g_user_suspend_state = USER_SLEEP; + } + spin_unlock_irqrestore(&g_list_lock, irqflags); + wait = 0; + if(g_user_suspend_state == USER_AWAKE) { + printk("android_power_suspend: suspend aborted\n"); + return; + } + + mutex_lock(&g_early_suspend_lock); + //printk("android_power_suspend: call early suspend handlers\n"); + list_for_each_entry(pos, &g_early_suspend_handlers, link) { + if(pos->suspend != NULL) + pos->suspend(pos); + } + //printk("android_power_suspend: call early suspend handlers\n"); + + //printk("android_power_suspend: enter\n"); + + sys_sync(); + + while(g_user_suspend_state == USER_SLEEP) { + //printk("android_power_suspend: enter wait (%d)\n", wait); + if(wait) { + wait_event_interruptible_timeout(g_wait_queue, g_user_suspend_state != USER_SLEEP, wait); + wait = 0; + } + if (android_power_debug_mask & ANDROID_POWER_DEBUG_SUSPEND) + print_locks = 1; + while(1) { + wait = get_wait_timeout(print_locks, USER_SLEEP, &g_active_partial_wake_locks); + print_locks = 0; + if(wait < 0) + break; + if(wait) + wait_event_interruptible_timeout(g_wait_queue, get_wait_timeout(0, USER_SLEEP, &g_active_partial_wake_locks) != wait, wait); + else + wait_event_interruptible(g_wait_queue, get_wait_timeout(0, USER_SLEEP, &g_active_partial_wake_locks) != wait); + } + wait = 0; + //printk("android_power_suspend: exit wait\n"); + entry_event_num = g_current_event_num; + if(g_user_suspend_state != USER_SLEEP) + break; + sys_sync(); + if (android_power_debug_mask & ANDROID_POWER_DEBUG_SUSPEND) + printk(KERN_INFO "android_power_suspend: enter suspend\n"); + ret = pm_suspend(PM_SUSPEND_MEM); + if (android_power_debug_mask & ANDROID_POWER_DEBUG_EXIT_SUSPEND) { + struct timespec ts; + struct rtc_time tm; + getnstimeofday(&ts); + rtc_time_to_tm(ts.tv_sec, &tm); + printk("android_power_suspend: exit suspend, ret = %d " + "(%d-%02d-%02d %02d:%02d:%02d.%09lu UTC)\n", ret, + tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, + tm.tm_hour, tm.tm_min, tm.tm_sec, ts.tv_nsec); + } + if(g_current_event_num == entry_event_num) { + if (android_power_debug_mask & ANDROID_POWER_DEBUG_SUSPEND) + printk(KERN_INFO "android_power_suspend: pm_suspend returned with no event\n"); + wait = HZ / 2; +#ifdef CONFIG_ANDROID_POWER_STAT + if(g_no_wake_locks.stat.count == 0) { + g_no_wake_locks.name = "unknown_wakeups"; + android_init_suspend_lock(&g_no_wake_locks); + } + g_no_wake_locks.stat.count++; + g_no_wake_locks.stat.total_time = ktime_add( + g_no_wake_locks.stat.total_time, + ktime_set(0, 500 * NSEC_PER_MSEC)); + g_no_wake_locks.stat.max_time = + ktime_set(0, 500 * NSEC_PER_MSEC); +#endif + } + } + if (android_power_debug_mask & ANDROID_POWER_DEBUG_USER_STATE) + printk("android_power_suspend: done\n"); + //printk("android_power_suspend: call late resume handlers\n"); + list_for_each_entry_reverse(pos, &g_early_suspend_handlers, link) { + if(pos->resume != NULL) + pos->resume(pos); + } + //printk("android_power_suspend: call late resume handlers\n"); + mutex_unlock(&g_early_suspend_lock); + } +} + +#if 0 +struct sysdev_class android_power_sysclass = { + set_kset_name("android_power"), + .suspend = android_power_class_suspend +}; +static struct sysdev_class *g_android_power_sysclass = NULL; + +static struct { + struct sys_device sysdev; +// omap_csmi_gsm_image_info_t *pdata; +} android_power_device = { + .sysdev = { + .id = 0, + .cls = &android_power_sysclass, +// .suspend = android_power_device_suspend + }, +// .pdata = &g_gsm_image_info +}; + +struct sysdev_class *android_power_get_sysclass(void) +{ + return g_android_power_sysclass; +} +#endif + +static ssize_t state_show(struct kobject *kobj, struct kobj_attribute *attr, char * buf) +{ + char * s = buf; + unsigned long irqflags; + + spin_lock_irqsave(&g_list_lock, irqflags); + s += sprintf(s, "%d-%d-%d\n", g_user_suspend_state, list_empty(&g_active_full_wake_locks), list_empty(&g_active_partial_wake_locks)); + spin_unlock_irqrestore(&g_list_lock, irqflags); + return (s - buf); +} + +static ssize_t state_store(struct kobject *kobj, struct kobj_attribute *attr, const char * buf, size_t n) +{ + if(n >= strlen("standby") && + strncmp(buf, "standby", strlen("standby")) == 0) { + android_power_request_sleep(); + wait_event_interruptible(g_wait_queue, g_user_suspend_state == USER_AWAKE); + return n; + } + if(n >= strlen("wake") && + strncmp(buf, "wake", strlen("wake")) == 0) { + android_power_wakeup(); + return n; + } + printk("android_power state_store: invalid argument\n"); + return -EINVAL; +} + +static ssize_t request_state_show(struct kobject *kobj, struct kobj_attribute *attr, char * buf) +{ + char * s = buf; + unsigned long irqflags; + + spin_lock_irqsave(&g_list_lock, irqflags); + if(g_user_suspend_state == USER_AWAKE) + s += sprintf(s, "wake\n"); + else if(g_user_suspend_state == USER_NOTIFICATION) + s += sprintf(s, "standby (w/full wake lock)\n"); + else + s += sprintf(s, "standby\n"); + spin_unlock_irqrestore(&g_list_lock, irqflags); + return (s - buf); +} + +static ssize_t request_state_store(struct kobject *kobj, struct kobj_attribute *attr, const char * buf, size_t n) +{ + if(n >= strlen("standby") && + strncmp(buf, "standby", strlen("standby")) == 0) { + android_power_request_sleep(); + return n; + } + if(n >= strlen("wake") && + strncmp(buf, "wake", strlen("wake")) == 0) { + android_power_wakeup(); + return n; + } + printk("android_power state_store: invalid argument\n"); + return -EINVAL; +} + + +static int lookup_wake_lock_name(const char *buf, size_t n, int allocate, int *timeout) +{ + int i; + int free_index = -1; + int inactive_index = -1; + int expires_index = -1; + int expires_time = INT_MAX; + char *tmp_buf[64]; + char name[32]; + u64 nanoseconds; + int num_arg; + + if(n <= 0) + return -EINVAL; + if(n >= sizeof(tmp_buf)) + return -EOVERFLOW; + if(n == sizeof(tmp_buf) - 1 && buf[n - 1] != '\0') + return -EOVERFLOW; + + memcpy(tmp_buf, buf, n); + if(tmp_buf[n - 1] != '\0') + tmp_buf[n] = '\0'; + + num_arg = sscanf(buf, "%31s %llu", name, &nanoseconds); + if(num_arg < 1) + return -EINVAL; + + if(strlen(name) >= sizeof(g_user_wake_locks[i].name_buffer)) + return -EOVERFLOW; + + if(timeout != NULL) { + if(num_arg > 1) { + do_div(nanoseconds, (NSEC_PER_SEC / HZ)); + if(nanoseconds <= 0) + nanoseconds = 1; + *timeout = nanoseconds; + } + else + *timeout = 0; + } + + for(i = 0; i < g_max_user_lockouts; i++) { + if(strcmp(g_user_wake_locks[i].name_buffer, name) == 0) + return i; + if(g_user_wake_locks[i].name_buffer[0] == '\0') + free_index = i; + else if(g_user_wake_locks[i].state == USER_WAKE_LOCK_INACTIVE) + inactive_index = i; + else if(g_user_wake_locks[i].suspend_lock.expires < expires_time) + expires_index = i; + } + if(allocate) { + if(free_index >= 0) + i = free_index; + else if(inactive_index >= 0) + i = inactive_index; + else if(expires_index >= 0) { + i = expires_index; + printk("lookup_wake_lock_name: overwriting expired lock, %s\n", g_user_wake_locks[i].name_buffer); + } + else { + i = 0; + printk("lookup_wake_lock_name: overwriting active lock, %s\n", g_user_wake_locks[i].name_buffer); + } + strcpy(g_user_wake_locks[i].name_buffer, name); + return i; + } + if (android_power_debug_mask & ANDROID_POWER_DEBUG_USER_WAKE_LOCK) + printk(KERN_INFO "lookup_wake_lock_name: %s not found\n", name); + return -EINVAL; +} + +static ssize_t acquire_full_wake_lock_show(struct kobject *kobj, struct kobj_attribute *attr, char * buf) +{ + int i; + char * s = buf; + unsigned long irqflags; + + spin_lock_irqsave(&g_list_lock, irqflags); + for(i = 0; i < g_max_user_lockouts; i++) { + if(g_user_wake_locks[i].name_buffer[0] != '\0' && g_user_wake_locks[i].state == USER_WAKE_LOCK_FULL) + s += sprintf(s, "%s ", g_user_wake_locks[i].name_buffer); + } + s += sprintf(s, "\n"); + + spin_unlock_irqrestore(&g_list_lock, irqflags); + return (s - buf); +} + +static ssize_t acquire_full_wake_lock_store(struct kobject *kobj, struct kobj_attribute *attr, const char * buf, size_t n) +{ + int i; + unsigned long irqflags; + int timeout; + + spin_lock_irqsave(&g_list_lock, irqflags); + i = lookup_wake_lock_name(buf, n, 1, &timeout); + if(i >= 0) + g_user_wake_locks[i].state = USER_WAKE_LOCK_FULL; + spin_unlock_irqrestore(&g_list_lock, irqflags); + if(i < 0) + return i; + + if (android_power_debug_mask & ANDROID_POWER_DEBUG_USER_WAKE_LOCK) + printk(KERN_INFO "acquire_full_wake_lock_store: %s, size %d\n", + g_user_wake_locks[i].name_buffer, n); + + //android_lock_partial_suspend_auto_expire(&g_user_wake_locks[i].suspend_lock, ktime_to_timespec(g_auto_off_timeout).tv_sec * HZ); + if(timeout == 0) + timeout = INT_MAX; + android_lock_partial_suspend_auto_expire(&g_user_wake_locks[i].suspend_lock, timeout); + + return n; +} + +static ssize_t acquire_partial_wake_lock_show(struct kobject *kobj, struct kobj_attribute *attr, char * buf) +{ + int i; + char * s = buf; + unsigned long irqflags; + + spin_lock_irqsave(&g_list_lock, irqflags); + for(i = 0; i < g_max_user_lockouts; i++) { + if(g_user_wake_locks[i].name_buffer[0] != '\0' && g_user_wake_locks[i].state == USER_WAKE_LOCK_PARTIAL) + s += sprintf(s, "%s ", g_user_wake_locks[i].name_buffer); + } + s += sprintf(s, "\n"); + + spin_unlock_irqrestore(&g_list_lock, irqflags); + return (s - buf); +} + +static ssize_t acquire_partial_wake_lock_store(struct kobject *kobj, struct kobj_attribute *attr, const char * buf, size_t n) +{ + int i; + unsigned long irqflags; + int timeout; + + spin_lock_irqsave(&g_list_lock, irqflags); + i = lookup_wake_lock_name(buf, n, 1, &timeout); + if(i >= 0) + g_user_wake_locks[i].state = USER_WAKE_LOCK_PARTIAL; + spin_unlock_irqrestore(&g_list_lock, irqflags); + if(i < 0) + return 0; + + if (android_power_debug_mask & ANDROID_POWER_DEBUG_USER_WAKE_LOCK) + printk(KERN_INFO "acquire_partial_wake_lock_store: %s, " + "size %d\n", g_user_wake_locks[i].name_buffer, n); + + if(timeout) + android_lock_suspend_auto_expire(&g_user_wake_locks[i].suspend_lock, timeout); + else + android_lock_suspend(&g_user_wake_locks[i].suspend_lock); + + return n; +} + + +static ssize_t release_wake_lock_show(struct kobject *kobj, struct kobj_attribute *attr, char * buf) +{ + int i; + char * s = buf; + unsigned long irqflags; + + spin_lock_irqsave(&g_list_lock, irqflags); + for(i = 0; i < g_max_user_lockouts; i++) { + if(g_user_wake_locks[i].name_buffer[0] != '\0' && g_user_wake_locks[i].state == USER_WAKE_LOCK_INACTIVE) + s += sprintf(s, "%s ", g_user_wake_locks[i].name_buffer); + } + s += sprintf(s, "\n"); + + spin_unlock_irqrestore(&g_list_lock, irqflags); + return (s - buf); +} + +static ssize_t release_wake_lock_store(struct kobject *kobj, struct kobj_attribute *attr, const char * buf, size_t n) +{ + int i; + unsigned long irqflags; + + spin_lock_irqsave(&g_list_lock, irqflags); + i = lookup_wake_lock_name(buf, n, 1, NULL); + if(i >= 0) { + g_user_wake_locks[i].state = USER_WAKE_LOCK_INACTIVE; + } + spin_unlock_irqrestore(&g_list_lock, irqflags); + + if(i < 0) + return i; + + if (android_power_debug_mask & ANDROID_POWER_DEBUG_USER_WAKE_LOCK) + printk(KERN_INFO "release_wake_lock_store: %s, size %d\n", + g_user_wake_locks[i].name_buffer, n); + + android_unlock_suspend(&g_user_wake_locks[i].suspend_lock); + return n; +} + + +#ifndef CONFIG_FRAMEBUFFER_CONSOLE +static ssize_t wait_for_fb_sleep_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + char * s = buf; + int ret; + + ret = wait_event_interruptible(fb_state_wq, + fb_state != ANDROID_DRAWING_OK); + if (ret && fb_state == ANDROID_DRAWING_OK) + return ret; + else + s += sprintf(buf, "sleeping"); + return (s - buf); +} + +static ssize_t wait_for_fb_wake_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + char * s = buf; + int ret; + unsigned long irq_flags; + + spin_lock_irqsave(&fb_state_lock, irq_flags); + if (fb_state == ANDROID_REQUEST_STOP_DRAWING) { + fb_state = ANDROID_STOPPED_DRAWING; + wake_up(&fb_state_wq); + } + spin_unlock_irqrestore(&fb_state_lock, irq_flags); + + ret = wait_event_interruptible(fb_state_wq, + fb_state == ANDROID_DRAWING_OK); + if (ret && fb_state != ANDROID_DRAWING_OK) + return ret; + else + s += sprintf(buf, "awake"); + + return (s - buf); +} +#endif + +#define android_power_attr(_name) \ +static struct kobj_attribute _name##_attr = { \ + .attr = { \ + .name = __stringify(_name), \ + .mode = 0664, \ + }, \ + .show = _name##_show, \ + .store = _name##_store, \ +} + +#define android_power_ro_attr(_name) \ +static struct kobj_attribute _name##_attr = { \ + .attr = { \ + .name = __stringify(_name), \ + .mode = 0444, \ + }, \ + .show = _name##_show, \ + .store = NULL, \ +} + +android_power_attr(state); +android_power_attr(request_state); +android_power_attr(acquire_full_wake_lock); +android_power_attr(acquire_partial_wake_lock); +android_power_attr(release_wake_lock); +#ifndef CONFIG_FRAMEBUFFER_CONSOLE +android_power_ro_attr(wait_for_fb_sleep); +android_power_ro_attr(wait_for_fb_wake); +#endif + +static struct attribute * g[] = { + &state_attr.attr, + &request_state_attr.attr, + &acquire_full_wake_lock_attr.attr, + &acquire_partial_wake_lock_attr.attr, + &release_wake_lock_attr.attr, +#ifndef CONFIG_FRAMEBUFFER_CONSOLE + &wait_for_fb_sleep_attr.attr, + &wait_for_fb_wake_attr.attr, +#endif + NULL, +}; + +static struct attribute_group attr_group = { + .attrs = g, +}; + +#if 0 +// test code when there is no platform suspend + +static android_suspend_lock_t test_pm_ops_suspend_lock = { + .name = "test_pm_ops" +}; + +int test_pm_op_enter(suspend_state_t state) +{ + printk("test_pm_op_enter reached\n"); + android_lock_suspend(&test_pm_ops_suspend_lock); + printk("test_pm_op_enter returned\n"); + return 0; +} + +void test_pm_ops_late_resume_handler(android_early_suspend_t *h) +{ + printk("test_pm_ops_late_resume_handler reached\n"); + android_unlock_suspend(&test_pm_ops_suspend_lock); + printk("test_pm_ops_late_resume_handler returned\n"); +} + +static struct pm_ops test_pm_ops = { + .enter = test_pm_op_enter +}; + +static android_early_suspend_t test_pm_ops_early_suspend_handler = { + .resume = test_pm_ops_late_resume_handler +}; +#endif + +static int __init android_power_init(void) +{ + int ret; + int i; + +#if 0 + if(pm_ops == NULL) { + printk("android_power_init no pm_ops, installing test code\n"); + pm_set_ops(&test_pm_ops); + android_init_suspend_lock(&test_pm_ops_suspend_lock); + android_register_early_suspend(&test_pm_ops_early_suspend_handler); + } +#endif + +#ifdef CONFIG_ANDROID_POWER_STAT + g_deleted_wake_locks.stat.count = 0; +#endif + init_waitqueue_head(&g_wait_queue); +#ifndef CONFIG_FRAMEBUFFER_CONSOLE + init_waitqueue_head(&fb_state_wq); + fb_state = ANDROID_DRAWING_OK; +#endif + + g_user_wake_locks = kzalloc(sizeof(*g_user_wake_locks) * g_max_user_lockouts, GFP_KERNEL); + if(g_user_wake_locks == NULL) { + ret = -ENOMEM; + goto err1; + } + for(i = 0; i < g_max_user_lockouts; i++) { + g_user_wake_locks[i].suspend_lock.name = g_user_wake_locks[i].name_buffer; + android_init_suspend_lock(&g_user_wake_locks[i].suspend_lock); + } + + g_suspend_work_queue = create_workqueue("suspend"); + if(g_suspend_work_queue == NULL) { + ret = -ENOMEM; + goto err2; + } + + android_power_kobj = kobject_create_and_add("android_power", NULL); + if (android_power_kobj == NULL) { + printk("android_power_init: subsystem_register failed\n"); + ret = -ENOMEM; + goto err3; + } + ret = sysfs_create_group(android_power_kobj, &attr_group); + if(ret) { + printk("android_power_init: sysfs_create_group failed\n"); + goto err4; + } +#ifdef CONFIG_ANDROID_POWER_STAT + create_proc_read_entry("wakelocks", S_IRUGO, NULL, wakelocks_read_proc, NULL); +#endif + +#if ANDROID_POWER_TEST_EARLY_SUSPEND + { + int i; + for(i = 0; i < sizeof(early_suspend_tests) / sizeof(early_suspend_tests[0]); i++) + android_register_early_suspend(&early_suspend_tests[i].h); + } +#endif +#ifdef CONFIG_FRAMEBUFFER_CONSOLE + android_register_early_suspend(&console_early_suspend_desc); +#else + android_register_early_suspend(&stop_drawing_early_suspend_desc); +#endif + +#if 0 + ret = sysdev_class_register(&android_power_sysclass); + if(ret) { + printk("android_power_init: sysdev_class_register failed\n"); + goto err1; + } + ret = sysdev_register(&android_power_device.sysdev); + if(ret < 0) + goto err2; + + g_android_power_sysclass = &android_power_sysclass; +#endif + return 0; + +//err2: +// sysdev_class_unregister(&android_power_sysclass); +err4: + kobject_del(android_power_kobj); +err3: + destroy_workqueue(g_suspend_work_queue); +err2: + for(i = 0; i < g_max_user_lockouts; i++) { + android_uninit_suspend_lock(&g_user_wake_locks[i].suspend_lock); + } + kfree(g_user_wake_locks); +err1: + return ret; +} + +static void __exit android_power_exit(void) +{ + int i; +// g_android_power_sysclass = NULL; +// sysdev_unregister(&android_power_device.sysdev); +// sysdev_class_unregister(&android_power_sysclass); +#ifdef CONFIG_FRAMEBUFFER_CONSOLE + android_unregister_early_suspend(&console_early_suspend_desc); +#else + android_unregister_early_suspend(&stop_drawing_early_suspend_desc); +#endif +#ifdef CONFIG_ANDROID_POWER_STAT + remove_proc_entry("wakelocks", NULL); +#endif + sysfs_remove_group(android_power_kobj, &attr_group); + kobject_del(android_power_kobj); + destroy_workqueue(g_suspend_work_queue); + for(i = 0; i < g_max_user_lockouts; i++) { + android_uninit_suspend_lock(&g_user_wake_locks[i].suspend_lock); + } + kfree(g_user_wake_locks); +} + +core_initcall(android_power_init); +module_exit(android_power_exit); + +//EXPORT_SYMBOL(android_power_get_sysclass); +EXPORT_SYMBOL(android_init_suspend_lock); +EXPORT_SYMBOL(android_uninit_suspend_lock); +EXPORT_SYMBOL(android_lock_suspend); +EXPORT_SYMBOL(android_lock_suspend_auto_expire); +EXPORT_SYMBOL(android_unlock_suspend); +EXPORT_SYMBOL(android_power_wakeup); +EXPORT_SYMBOL(android_register_early_suspend); +EXPORT_SYMBOL(android_unregister_early_suspend); + + diff --git a/drivers/android/ram_console.c b/drivers/android/ram_console.c new file mode 100644 index 00000000000..aec20f7f1b6 --- /dev/null +++ b/drivers/android/ram_console.c @@ -0,0 +1,395 @@ +/* drivers/android/ram_console.c + * + * Copyright (C) 2007-2008 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/console.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/proc_fs.h> +#include <linux/string.h> +#include <linux/uaccess.h> +#include <asm/io.h> + +#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION +#include <linux/rslib.h> +#endif + +struct ram_console_buffer { + uint32_t sig; + uint32_t start; + uint32_t size; + uint8_t data[0]; +}; + +#define RAM_CONSOLE_SIG (0x43474244) /* DBGC */ + +#ifdef CONFIG_ANDROID_RAM_CONSOLE_EARLY_INIT +static char __initdata + ram_console_old_log_init_buffer[CONFIG_ANDROID_RAM_CONSOLE_EARLY_SIZE]; +#endif +static char *ram_console_old_log; +static size_t ram_console_old_log_size; + +static struct ram_console_buffer *ram_console_buffer; +static size_t ram_console_buffer_size; +#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION +static char *ram_console_par_buffer; +static struct rs_control *ram_console_rs_decoder; +static int ram_console_corrected_bytes; +static int ram_console_bad_blocks; +#define ECC_BLOCK_SIZE CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION_DATA_SIZE +#define ECC_SIZE CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION_ECC_SIZE +#define ECC_SYMSIZE CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE +#define ECC_POLY CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION_POLYNOMIAL +#endif + +#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION +static void ram_console_encode_rs8(uint8_t *data, size_t len, uint8_t *ecc) +{ + int i; + uint16_t par[ECC_SIZE]; + /* Initialize the parity buffer */ + memset(par, 0, sizeof(par)); + encode_rs8(ram_console_rs_decoder, data, len, par, 0); + for (i = 0; i < ECC_SIZE; i++) + ecc[i] = par[i]; +} + +static int ram_console_decode_rs8(void *data, size_t len, uint8_t *ecc) +{ + int i; + uint16_t par[ECC_SIZE]; + for (i = 0; i < ECC_SIZE; i++) + par[i] = ecc[i]; + return decode_rs8(ram_console_rs_decoder, data, par, len, + NULL, 0, NULL, 0, NULL); +} +#endif + +static void ram_console_update(const char *s, unsigned int count) +{ + struct ram_console_buffer *buffer = ram_console_buffer; +#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION + uint8_t *buffer_end = buffer->data + ram_console_buffer_size; + uint8_t *block; + uint8_t *par; + int size = ECC_BLOCK_SIZE; +#endif + memcpy(buffer->data + buffer->start, s, count); +#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION + block = buffer->data + (buffer->start & ~(ECC_BLOCK_SIZE - 1)); + par = ram_console_par_buffer + + (buffer->start / ECC_BLOCK_SIZE) * ECC_SIZE; + do { + if (block + ECC_BLOCK_SIZE > buffer_end) + size = buffer_end - block; + ram_console_encode_rs8(block, size, par); + block += ECC_BLOCK_SIZE; + par += ECC_SIZE; + } while (block < buffer->data + buffer->start + count); +#endif +} + +static void ram_console_update_header(void) +{ +#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION + struct ram_console_buffer *buffer = ram_console_buffer; + uint8_t *par; + par = ram_console_par_buffer + + DIV_ROUND_UP(ram_console_buffer_size, ECC_BLOCK_SIZE) * ECC_SIZE; + ram_console_encode_rs8((uint8_t *)buffer, sizeof(*buffer), par); +#endif +} + +static void +ram_console_write(struct console *console, const char *s, unsigned int count) +{ + int rem; + struct ram_console_buffer *buffer = ram_console_buffer; + + if (count > ram_console_buffer_size) { + s += count - ram_console_buffer_size; + count = ram_console_buffer_size; + } + rem = ram_console_buffer_size - buffer->start; + if (rem < count) { + ram_console_update(s, rem); + s += rem; + count -= rem; + buffer->start = 0; + buffer->size = ram_console_buffer_size; + } + ram_console_update(s, count); + + buffer->start += count; + if (buffer->size < ram_console_buffer_size) + buffer->size += count; + ram_console_update_header(); +} + +static struct console ram_console = { + .name = "ram", + .write = ram_console_write, + .flags = CON_PRINTBUFFER | CON_ENABLED, + .index = -1, +}; + +static void __init +ram_console_save_old(struct ram_console_buffer *buffer, char *dest) +{ + size_t old_log_size = buffer->size; +#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION + uint8_t *block; + uint8_t *par; + char strbuf[80]; + int strbuf_len; + + block = buffer->data; + par = ram_console_par_buffer; + while (block < buffer->data + buffer->size) { + int numerr; + int size = ECC_BLOCK_SIZE; + if (block + size > buffer->data + ram_console_buffer_size) + size = buffer->data + ram_console_buffer_size - block; + numerr = ram_console_decode_rs8(block, size, par); + if (numerr > 0) { +#if 0 + printk(KERN_INFO "ram_console: error in block %p, %d\n", + block, numerr); +#endif + ram_console_corrected_bytes += numerr; + } else if (numerr < 0) { +#if 0 + printk(KERN_INFO "ram_console: uncorrectable error in " + "block %p\n", block); +#endif + ram_console_bad_blocks++; + } + block += ECC_BLOCK_SIZE; + par += ECC_SIZE; + } + if (ram_console_corrected_bytes || ram_console_bad_blocks) + strbuf_len = snprintf(strbuf, sizeof(strbuf), + "\n%d Corrected bytes, %d unrecoverable blocks\n", + ram_console_corrected_bytes, ram_console_bad_blocks); + else + strbuf_len = snprintf(strbuf, sizeof(strbuf), + "\nNo errors detected\n"); + if (strbuf_len >= sizeof(strbuf)) + strbuf_len = sizeof(strbuf) - 1; + old_log_size += strbuf_len; +#endif + + if (dest == NULL) { + dest = kmalloc(old_log_size, GFP_KERNEL); + if (dest == NULL) { + printk(KERN_ERR + "ram_console: failed to allocate buffer\n"); + return; + } + } + + ram_console_old_log = dest; + ram_console_old_log_size = old_log_size; + memcpy(ram_console_old_log, + &buffer->data[buffer->start], buffer->size - buffer->start); + memcpy(ram_console_old_log + buffer->size - buffer->start, + &buffer->data[0], buffer->start); +#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION + memcpy(ram_console_old_log + old_log_size - strbuf_len, + strbuf, strbuf_len); +#endif +} + +static int __init ram_console_init(struct ram_console_buffer *buffer, + size_t buffer_size, char *old_buf) +{ +#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION + int numerr; + uint8_t *par; +#endif + ram_console_buffer = buffer; + ram_console_buffer_size = + buffer_size - sizeof(struct ram_console_buffer); + +#ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION + ram_console_buffer_size -= (DIV_ROUND_UP(ram_console_buffer_size, + ECC_BLOCK_SIZE) + 1) * ECC_SIZE; + ram_console_par_buffer = buffer->data + ram_console_buffer_size; + + + /* first consecutive root is 0 + * primitive element to generate roots = 1 + */ + ram_console_rs_decoder = init_rs(ECC_SYMSIZE, ECC_POLY, 0, 1, ECC_SIZE); + if (ram_console_rs_decoder == NULL) { + printk(KERN_INFO "ram_console: init_rs failed\n"); + return 0; + } + + ram_console_corrected_bytes = 0; + ram_console_bad_blocks = 0; + + par = ram_console_par_buffer + + DIV_ROUND_UP(ram_console_buffer_size, ECC_BLOCK_SIZE) * ECC_SIZE; + + numerr = ram_console_decode_rs8(buffer, sizeof(*buffer), par); + if (numerr > 0) { + printk(KERN_INFO "ram_console: error in header, %d\n", numerr); + ram_console_corrected_bytes += numerr; + } else if (numerr < 0) { + printk(KERN_INFO + "ram_console: uncorrectable error in header\n"); + ram_console_bad_blocks++; + } +#endif + + if (buffer->sig == RAM_CONSOLE_SIG) { + if (buffer->size > ram_console_buffer_size + || buffer->start > buffer->size) + printk(KERN_INFO "ram_console: found existing invalid " + "buffer, size %d, start %d\n", + buffer->size, buffer->start); + else { + printk(KERN_INFO "ram_console: found existing buffer, " + "size %d, start %d\n", + buffer->size, buffer->start); + ram_console_save_old(buffer, old_buf); + } + } else { + printk(KERN_INFO "ram_console: no valid data in buffer " + "(sig = 0x%08x)\n", buffer->sig); + } + + buffer->sig = RAM_CONSOLE_SIG; + buffer->start = 0; + buffer->size = 0; + + register_console(&ram_console); +#ifdef CONFIG_ANDROID_RAM_CONSOLE_ENABLE_VERBOSE + console_verbose(); +#endif + return 0; +} + +#ifdef CONFIG_ANDROID_RAM_CONSOLE_EARLY_INIT +static int __init ram_console_early_init(void) +{ + return ram_console_init((struct ram_console_buffer *) + CONFIG_ANDROID_RAM_CONSOLE_EARLY_ADDR, + CONFIG_ANDROID_RAM_CONSOLE_EARLY_SIZE, + ram_console_old_log_init_buffer); +} +#else +static int ram_console_driver_probe(struct platform_device *pdev) +{ + struct resource *res = pdev->resource; + size_t start; + size_t buffer_size; + void *buffer; + + if (res == NULL || pdev->num_resources != 1 || + !(res->flags & IORESOURCE_MEM)) { + printk(KERN_ERR "ram_console: invalid resource, %p %d flags " + "%lx\n", res, pdev->num_resources, res ? res->flags : 0); + return -ENXIO; + } + buffer_size = res->end - res->start + 1; + start = res->start; + printk(KERN_INFO "ram_console: got buffer at %x, size %x\n", + start, buffer_size); + buffer = ioremap(res->start, buffer_size); + if (buffer == NULL) { + printk(KERN_ERR "ram_console: failed to map memory\n"); + return -ENOMEM; + } + + return ram_console_init(buffer, buffer_size, NULL/* allocate */); +} + +static struct platform_driver ram_console_driver = { + .probe = ram_console_driver_probe, + .driver = { + .name = "ram_console", + }, +}; + +static int __init ram_console_module_init(void) +{ + int err; + err = platform_driver_register(&ram_console_driver); + return err; +} +#endif + +static ssize_t ram_console_read_old(struct file *file, char __user *buf, + size_t len, loff_t *offset) +{ + loff_t pos = *offset; + ssize_t count; + + if (pos >= ram_console_old_log_size) + return 0; + + count = min(len, (size_t)(ram_console_old_log_size - pos)); + if (copy_to_user(buf, ram_console_old_log + pos, count)) + return -EFAULT; + + *offset += count; + return count; +} + +static struct file_operations ram_console_file_ops = { + .owner = THIS_MODULE, + .read = ram_console_read_old, +}; + +static int __init ram_console_late_init(void) +{ + struct proc_dir_entry *entry; + + if (ram_console_old_log == NULL) + return 0; +#ifdef CONFIG_ANDROID_RAM_CONSOLE_EARLY_INIT + ram_console_old_log = kmalloc(ram_console_old_log_size, GFP_KERNEL); + if (ram_console_old_log == NULL) { + printk(KERN_ERR + "ram_console: failed to allocate buffer for old log\n"); + ram_console_old_log_size = 0; + return 0; + } + memcpy(ram_console_old_log, + ram_console_old_log_init_buffer, ram_console_old_log_size); +#endif + entry = create_proc_entry("last_kmsg", S_IFREG | S_IRUGO, NULL); + if (!entry) { + printk(KERN_ERR "ram_console: failed to create proc entry\n"); + kfree(ram_console_old_log); + ram_console_old_log = NULL; + return 0; + } + + entry->proc_fops = &ram_console_file_ops; + entry->size = ram_console_old_log_size; + return 0; +} + +#ifdef CONFIG_ANDROID_RAM_CONSOLE_EARLY_INIT +console_initcall(ram_console_early_init); +#else +module_init(ram_console_module_init); +#endif +late_initcall(ram_console_late_init); + diff --git a/drivers/android/timed_gpio.c b/drivers/android/timed_gpio.c new file mode 100644 index 00000000000..d474d105de4 --- /dev/null +++ b/drivers/android/timed_gpio.c @@ -0,0 +1,177 @@ +/* drivers/android/timed_gpio.c + * + * Copyright (C) 2008 Google, Inc. + * Author: Mike Lockwood <lockwood@android.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/hrtimer.h> +#include <linux/err.h> +#include <asm/arch/gpio.h> + +#include <linux/android_timed_gpio.h> + + +static struct class *timed_gpio_class; + +struct timed_gpio_data { + struct device *dev; + struct hrtimer timer; + spinlock_t lock; + unsigned gpio; + int max_timeout; + u8 active_low; +}; + +static enum hrtimer_restart gpio_timer_func(struct hrtimer *timer) +{ + struct timed_gpio_data *gpio_data = container_of(timer, struct timed_gpio_data, timer); + + gpio_direction_output(gpio_data->gpio, gpio_data->active_low ? 1 : 0); + return HRTIMER_NORESTART; +} + +static ssize_t gpio_enable_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct timed_gpio_data *gpio_data = dev_get_drvdata(dev); + int remaining; + + if (hrtimer_active(&gpio_data->timer)) { + ktime_t r = hrtimer_get_remaining(&gpio_data->timer); + remaining = r.tv.sec * 1000 + r.tv.nsec / 1000000; + } else + remaining = 0; + + return sprintf(buf, "%d\n", remaining); +} + +static ssize_t gpio_enable_store( + struct device *dev, struct device_attribute *attr, + const char *buf, size_t size) +{ + struct timed_gpio_data *gpio_data = dev_get_drvdata(dev); + int value; + unsigned long flags; + + sscanf(buf, "%d", &value); + + spin_lock_irqsave(&gpio_data->lock, flags); + + /* cancel previous timer and set GPIO according to value */ + hrtimer_cancel(&gpio_data->timer); + gpio_direction_output(gpio_data->gpio, gpio_data->active_low ? !value : !!value); + + if (value > 0) { + if (value > gpio_data->max_timeout) + value = gpio_data->max_timeout; + + hrtimer_start(&gpio_data->timer, + ktime_set(value / 1000, (value % 1000) * 1000000), + HRTIMER_MODE_REL); + } + + spin_unlock_irqrestore(&gpio_data->lock, flags); + + return size; +} + +static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, gpio_enable_show, gpio_enable_store); + +static int android_timed_gpio_probe(struct platform_device *pdev) +{ + struct timed_gpio_platform_data *pdata = pdev->dev.platform_data; + struct timed_gpio *cur_gpio; + struct timed_gpio_data *gpio_data, *gpio_dat; + int i, ret = 0; + + if (!pdata) + return -EBUSY; + + gpio_data = kzalloc(sizeof(struct timed_gpio_data) * pdata->num_gpios, GFP_KERNEL); + if (!gpio_data) + return -ENOMEM; + + for (i = 0; i < pdata->num_gpios; i++) { + cur_gpio = &pdata->gpios[i]; + gpio_dat = &gpio_data[i]; + + hrtimer_init(&gpio_dat->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + gpio_dat->timer.function = gpio_timer_func; + spin_lock_init(&gpio_dat->lock); + + gpio_dat->gpio = cur_gpio->gpio; + gpio_dat->max_timeout = cur_gpio->max_timeout; + gpio_dat->active_low = cur_gpio->active_low; + gpio_direction_output(gpio_dat->gpio, gpio_dat->active_low); + + gpio_dat->dev = device_create(timed_gpio_class, &pdev->dev, 0, "%s", cur_gpio->name); + if (unlikely(IS_ERR(gpio_dat->dev))) + return PTR_ERR(gpio_dat->dev); + + dev_set_drvdata(gpio_dat->dev, gpio_dat); + ret = device_create_file(gpio_dat->dev, &dev_attr_enable); + if (ret) + return ret; + } + + platform_set_drvdata(pdev, gpio_data); + + return 0; +} + +static int android_timed_gpio_remove(struct platform_device *pdev) +{ + struct timed_gpio_platform_data *pdata = pdev->dev.platform_data; + struct timed_gpio_data *gpio_data = platform_get_drvdata(pdev); + int i; + + for (i = 0; i < pdata->num_gpios; i++) { + device_remove_file(gpio_data[i].dev, &dev_attr_enable); + device_unregister(gpio_data[i].dev); + } + + kfree(gpio_data); + + return 0; +} + +static struct platform_driver android_timed_gpio_driver = { + .probe = android_timed_gpio_probe, + .remove = android_timed_gpio_remove, + .driver = { + .name = "android-timed-gpio", + .owner = THIS_MODULE, + }, +}; + +static int __init android_timed_gpio_init(void) +{ + timed_gpio_class = class_create(THIS_MODULE, "timed_output"); + if (IS_ERR(timed_gpio_class)) + return PTR_ERR(timed_gpio_class); + return platform_driver_register(&android_timed_gpio_driver); +} + +static void __exit android_timed_gpio_exit(void) +{ + class_destroy(timed_gpio_class); + platform_driver_unregister(&android_timed_gpio_driver); +} + +module_init(android_timed_gpio_init); +module_exit(android_timed_gpio_exit); + +MODULE_AUTHOR("Mike Lockwood <lockwood@android.com>"); +MODULE_DESCRIPTION("Android timed gpio driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index 9494400e8fd..e07ea1cec56 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -391,6 +391,11 @@ config THINKPAD_ACPI_HOTKEY_POLL If you are not sure, say Y here. The driver enables polling only if it is strictly necessary to do so. +config LOW_MEMORY_KILLER + tristate "Low Memory Killer" + ---help--- + Register processes to be killed when memory is low. + config ATMEL_SSC tristate "Device driver for Atmel SSC peripheral" depends on AVR32 || ARCH_AT91 diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index 909e2468cdc..8455289665b 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -31,3 +31,4 @@ obj-$(CONFIG_KGDB_TESTS) += kgdbts.o obj-$(CONFIG_SGI_XP) += sgi-xp/ obj-$(CONFIG_SGI_GRU) += sgi-gru/ obj-$(CONFIG_HP_ILO) += hpilo.o +obj-$(CONFIG_LOW_MEMORY_KILLER) += lowmemorykiller.o diff --git a/drivers/misc/lowmemorykiller.c b/drivers/misc/lowmemorykiller.c new file mode 100644 index 00000000000..3715d56ca96 --- /dev/null +++ b/drivers/misc/lowmemorykiller.c @@ -0,0 +1,119 @@ +/* drivers/misc/lowmemorykiller.c + * + * Copyright (C) 2007-2008 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/oom.h> +#include <linux/sched.h> + +static int lowmem_shrink(int nr_to_scan, gfp_t gfp_mask); + +static struct shrinker lowmem_shrinker = { + .shrink = lowmem_shrink, + .seeks = DEFAULT_SEEKS * 16 +}; +static uint32_t lowmem_debug_level = 2; +static int lowmem_adj[6] = { + 0, + 1, + 6, + 12, +}; +static int lowmem_adj_size = 4; +static size_t lowmem_minfree[6] = { + 3*512, // 6MB + 2*1024, // 8MB + 4*1024, // 16MB + 16*1024, // 64MB +}; +static int lowmem_minfree_size = 4; + +#define lowmem_print(level, x...) do { if(lowmem_debug_level >= (level)) printk(x); } while(0) + +module_param_named(cost, lowmem_shrinker.seeks, int, S_IRUGO | S_IWUSR); +module_param_array_named(adj, lowmem_adj, int, &lowmem_adj_size, S_IRUGO | S_IWUSR); +module_param_array_named(minfree, lowmem_minfree, uint, &lowmem_minfree_size, S_IRUGO | S_IWUSR); +module_param_named(debug_level, lowmem_debug_level, uint, S_IRUGO | S_IWUSR); + +static int lowmem_shrink(int nr_to_scan, gfp_t gfp_mask) +{ + struct task_struct *p; + struct task_struct *selected = NULL; + int rem = 0; + int tasksize; + int i; + int min_adj = OOM_ADJUST_MAX + 1; + int selected_tasksize = 0; + int array_size = ARRAY_SIZE(lowmem_adj); + int other_free = global_page_state(NR_FREE_PAGES) + global_page_state(NR_FILE_PAGES); + if(lowmem_adj_size < array_size) + array_size = lowmem_adj_size; + if(lowmem_minfree_size < array_size) + array_size = lowmem_minfree_size; + for(i = 0; i < array_size; i++) { + if(other_free < lowmem_minfree[i]) { + min_adj = lowmem_adj[i]; + break; + } + } + if(nr_to_scan > 0) + lowmem_print(3, "lowmem_shrink %d, %x, ofree %d, ma %d\n", nr_to_scan, gfp_mask, other_free, min_adj); + read_lock(&tasklist_lock); + for_each_process(p) { + if(p->oomkilladj >= 0 && p->mm) { + tasksize = get_mm_rss(p->mm); + if(nr_to_scan > 0 && tasksize > 0 && p->oomkilladj >= min_adj) { + if(selected == NULL || + p->oomkilladj > selected->oomkilladj || + (p->oomkilladj == selected->oomkilladj && + tasksize > selected_tasksize)) { + selected = p; + selected_tasksize = tasksize; + lowmem_print(2, "select %d (%s), adj %d, size %d, to kill\n", + p->pid, p->comm, p->oomkilladj, tasksize); + } + } + rem += tasksize; + } + } + if(selected != NULL) { + lowmem_print(1, "send sigkill to %d (%s), adj %d, size %d\n", + selected->pid, selected->comm, + selected->oomkilladj, selected_tasksize); + force_sig(SIGKILL, selected); + rem -= selected_tasksize; + } + lowmem_print(4, "lowmem_shrink %d, %x, return %d\n", nr_to_scan, gfp_mask, rem); + read_unlock(&tasklist_lock); + return rem; +} + +static int __init lowmem_init(void) +{ + register_shrinker(&lowmem_shrinker); + return 0; +} + +static void __exit lowmem_exit(void) +{ + unregister_shrinker(&lowmem_shrinker); +} + +module_init(lowmem_init); +module_exit(lowmem_exit); + +MODULE_LICENSE("GPL"); + diff --git a/include/linux/android_aid.h b/include/linux/android_aid.h new file mode 100644 index 00000000000..d22723afbca --- /dev/null +++ b/include/linux/android_aid.h @@ -0,0 +1,25 @@ +/* include/linux/android_aid.h + * + * Copyright (C) 2008 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef _LINUX_ANDROID_AID_H +#define _LINUX_ANDROID_AID_H + +/* AIDs that the kernel treats differently */ +#define AID_NET_BT_ADMIN 3001 +#define AID_NET_BT 3002 +#define AID_INET 3003 +#define AID_NET_RAW 3004 + +#endif diff --git a/include/linux/android_alarm.h b/include/linux/android_alarm.h new file mode 100644 index 00000000000..c1a1450e992 --- /dev/null +++ b/include/linux/android_alarm.h @@ -0,0 +1,59 @@ +/* include/linux/android_alarm.h + * + * Copyright (C) 2006-2007 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef _LINUX_ANDROID_ALARM_H +#define _LINUX_ANDROID_ALARM_H + +#include <asm/ioctl.h> +#include <linux/time.h> + +typedef enum { + /* return code bit numbers or set alarm arg */ + ANDROID_ALARM_RTC_WAKEUP, + ANDROID_ALARM_RTC, + ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP, + ANDROID_ALARM_ELAPSED_REALTIME, + ANDROID_ALARM_SYSTEMTIME, + + ANDROID_ALARM_TYPE_COUNT, + + /* return code bit numbers */ + /* ANDROID_ALARM_TIME_CHANGE = 16 */ +} android_alarm_type_t; + +typedef enum { + ANDROID_ALARM_RTC_WAKEUP_MASK = 1U << ANDROID_ALARM_RTC_WAKEUP, + ANDROID_ALARM_RTC_MASK = 1U << ANDROID_ALARM_RTC, + ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP_MASK = 1U << ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP, + ANDROID_ALARM_ELAPSED_REALTIME_MASK = 1U << ANDROID_ALARM_ELAPSED_REALTIME, + ANDROID_ALARM_SYSTEMTIME_MASK = 1U << ANDROID_ALARM_SYSTEMTIME, + ANDROID_ALARM_TIME_CHANGE_MASK = 1U << 16 +} android_alarm_return_flags_t; + +/* Disable alarm */ +#define ANDROID_ALARM_CLEAR(type) _IO('a', 0 | ((type) << 4)) + +/* Ack last alarm and wait for next */ +#define ANDROID_ALARM_WAIT _IO('a', 1) + +/* Set alarm */ +#define ANDROID_ALARM_SET(type) _IOW('a', 2 | ((type) << 4), struct timespec) +#define ANDROID_ALARM_SET_AND_WAIT(type) _IOW('a', 3 | ((type) << 4), struct timespec) +#define ANDROID_ALARM_GET_TIME(type) _IOW('a', 4 | ((type) << 4), struct timespec) +#define ANDROID_ALARM_SET_RTC _IOW('a', 5, struct timespec) +#define ANDROID_ALARM_BASE_CMD(cmd) (cmd & ~(_IOC(0, 0, 0xf0, 0))) +#define ANDROID_ALARM_IOCTL_TO_TYPE(cmd) (_IOC_NR(cmd) >> 4) + +#endif diff --git a/include/linux/android_power.h b/include/linux/android_power.h new file mode 100644 index 00000000000..e0d6c2c1ae2 --- /dev/null +++ b/include/linux/android_power.h @@ -0,0 +1,98 @@ +/* include/linux/android_power.h + * + * Copyright (C) 2007-2008 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef _LINUX_ANDROID_POWER_H +#define _LINUX_ANDROID_POWER_H + +#include <linux/list.h> +#include <linux/ktime.h> + +typedef struct +{ + struct list_head link; + int flags; + const char *name; + int expires; +#ifdef CONFIG_ANDROID_POWER_STAT + struct { + int count; + int expire_count; + ktime_t total_time; + ktime_t max_time; + ktime_t last_time; + } stat; +#endif +} android_suspend_lock_t; + +#if 0 /* none of these flags are implemented */ +#define ANDROID_SUSPEND_LOCK_FLAG_COUNTED (1U << 0) +#define ANDROID_SUSPEND_LOCK_FLAG_USER_READABLE (1U << 1) +#define ANDROID_SUSPEND_LOCK_FLAG_USER_SET (1U << 2) +#define ANDROID_SUSPEND_LOCK_FLAG_USER_CLEAR (1U << 3) +#define ANDROID_SUSPEND_LOCK_FLAG_USER_INC (1U << 4) +#define ANDROID_SUSPEND_LOCK_FLAG_USER_DEC (1U << 5) +#define ANDROID_SUSPEND_LOCK_FLAG_USER_VISIBLE_MASK (0x1fU << 1) +#endif +#define ANDROID_SUSPEND_LOCK_AUTO_EXPIRE (1U << 6) +#define ANDROID_SUSPEND_LOCK_ACTIVE (1U << 7) + +enum { + ANDROID_STOPPED_DRAWING, + ANDROID_REQUEST_STOP_DRAWING, + ANDROID_DRAWING_OK, +}; + +enum { + ANDROID_EARLY_SUSPEND_LEVEL_BLANK_SCREEN = 50, + ANDROID_EARLY_SUSPEND_LEVEL_CONSOLE_SWITCH = 100, + ANDROID_EARLY_SUSPEND_LEVEL_DISABLE_FB = 150, +}; +typedef struct android_early_suspend android_early_suspend_t; +struct android_early_suspend +{ + struct list_head link; + int level; + void (*suspend)(android_early_suspend_t *h); + void (*resume)(android_early_suspend_t *h); +}; + +typedef enum { + ANDROID_CHARGING_STATE_UNKNOWN, + ANDROID_CHARGING_STATE_DISCHARGE, + ANDROID_CHARGING_STATE_MAINTAIN, /* or trickle */ + ANDROID_CHARGING_STATE_SLOW, + ANDROID_CHARGING_STATE_NORMAL, + ANDROID_CHARGING_STATE_FAST, + ANDROID_CHARGING_STATE_OVERHEAT +} android_charging_state_t; + +/* android_suspend_lock_t *android_allocate_suspend_lock(const char *debug_name); */ +/* void android_free_suspend_lock(android_suspend_lock_t *lock); */ +int android_init_suspend_lock(android_suspend_lock_t *lock); +void android_uninit_suspend_lock(android_suspend_lock_t *lock); +void android_lock_idle(android_suspend_lock_t *lock); +void android_lock_idle_auto_expire(android_suspend_lock_t *lock, int timeout); +void android_lock_suspend(android_suspend_lock_t *lock); +void android_lock_suspend_auto_expire(android_suspend_lock_t *lock, int timeout); +void android_unlock_suspend(android_suspend_lock_t *lock); + +int android_power_is_driver_suspended(void); +int android_power_is_low_power_idle_ok(void); + +void android_register_early_suspend(android_early_suspend_t *handler); +void android_unregister_early_suspend(android_early_suspend_t *handler); + +#endif + diff --git a/include/linux/android_timed_gpio.h b/include/linux/android_timed_gpio.h new file mode 100644 index 00000000000..a38a96c2b37 --- /dev/null +++ b/include/linux/android_timed_gpio.h @@ -0,0 +1,31 @@ +/* include/linux/android_timed_gpio.h + * + * Copyright (C) 2008 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * +*/ + +#ifndef _LINUX_ANDROID_TIMED_GPIO_H +#define _LINUX_ANDROID_TIMED_GPIO_H + +struct timed_gpio { + const char *name; + unsigned gpio; + int max_timeout; + u8 active_low; +}; + +struct timed_gpio_platform_data { + int num_gpios; + struct timed_gpio *gpios; +}; + +#endif diff --git a/include/linux/ashmem.h b/include/linux/ashmem.h new file mode 100644 index 00000000000..1976b10ef93 --- /dev/null +++ b/include/linux/ashmem.h @@ -0,0 +1,48 @@ +/* + * include/linux/ashmem.h + * + * Copyright 2008 Google Inc. + * Author: Robert Love + * + * This file is dual licensed. It may be redistributed and/or modified + * under the terms of the Apache 2.0 License OR version 2 of the GNU + * General Public License. + */ + +#ifndef _LINUX_ASHMEM_H +#define _LINUX_ASHMEM_H + +#include <linux/limits.h> +#include <linux/ioctl.h> + +#define ASHMEM_NAME_LEN 256 + +#define ASHMEM_NAME_DEF "dev/ashmem" + +/* Return values from ASHMEM_PIN: Was the mapping purged while unpinned? */ +#define ASHMEM_NOT_PURGED 0 +#define ASHMEM_WAS_PURGED 1 + +/* Return values from ASHMEM_GET_PIN_STATUS: Is the mapping pinned? */ +#define ASHMEM_IS_UNPINNED 0 +#define ASHMEM_IS_PINNED 1 + +struct ashmem_pin { + __u32 offset; /* offset into region, in bytes, page-aligned */ + __u32 len; /* length forward from offset, in bytes, page-aligned */ +}; + +#define __ASHMEMIOC 0x77 + +#define ASHMEM_SET_NAME _IOW(__ASHMEMIOC, 1, char[ASHMEM_NAME_LEN]) +#define ASHMEM_GET_NAME _IOR(__ASHMEMIOC, 2, char[ASHMEM_NAME_LEN]) +#define ASHMEM_SET_SIZE _IOW(__ASHMEMIOC, 3, size_t) +#define ASHMEM_GET_SIZE _IO(__ASHMEMIOC, 4) +#define ASHMEM_SET_PROT_MASK _IOW(__ASHMEMIOC, 5, unsigned long) +#define ASHMEM_GET_PROT_MASK _IO(__ASHMEMIOC, 6) +#define ASHMEM_PIN _IOW(__ASHMEMIOC, 7, struct ashmem_pin) +#define ASHMEM_UNPIN _IOW(__ASHMEMIOC, 8, struct ashmem_pin) +#define ASHMEM_GET_PIN_STATUS _IO(__ASHMEMIOC, 9) +#define ASHMEM_PURGE_ALL_CACHES _IO(__ASHMEMIOC, 10) + +#endif /* _LINUX_ASHMEM_H */ diff --git a/include/linux/binder.h b/include/linux/binder.h new file mode 100644 index 00000000000..863ae1ad5d5 --- /dev/null +++ b/include/linux/binder.h @@ -0,0 +1,330 @@ +/* + * Copyright (C) 2008 Google, Inc. + * + * Based on, but no longer compatible with, the original + * OpenBinder.org binder driver interface, which is: + * + * Copyright (c) 2005 Palmsource, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef _LINUX_BINDER_H +#define _LINUX_BINDER_H + +#include <linux/ioctl.h> + +#define B_PACK_CHARS(c1, c2, c3, c4) \ + ((((c1)<<24)) | (((c2)<<16)) | (((c3)<<8)) | (c4)) +#define B_TYPE_LARGE 0x85 + +enum { + BINDER_TYPE_BINDER = B_PACK_CHARS('s', 'b', '*', B_TYPE_LARGE), + BINDER_TYPE_WEAK_BINDER = B_PACK_CHARS('w', 'b', '*', B_TYPE_LARGE), + BINDER_TYPE_HANDLE = B_PACK_CHARS('s', 'h', '*', B_TYPE_LARGE), + BINDER_TYPE_WEAK_HANDLE = B_PACK_CHARS('w', 'h', '*', B_TYPE_LARGE), + BINDER_TYPE_FD = B_PACK_CHARS('f', 'd', '*', B_TYPE_LARGE), +}; + +enum { + FLAT_BINDER_FLAG_PRIORITY_MASK = 0xff, + FLAT_BINDER_FLAG_ACCEPTS_FDS = 0x100, +}; + +/* + * This is the flattened representation of a Binder object for transfer + * between processes. The 'offsets' supplied as part of a binder transaction + * contains offsets into the data where these structures occur. The Binder + * driver takes care of re-writing the structure type and data as it moves + * between processes. + */ +struct flat_binder_object { + /* 8 bytes for large_flat_header. */ + unsigned long type; + unsigned long flags; + + /* 8 bytes of data. */ + union { + void *binder; /* local object */ + signed long handle; /* remote object */ + }; + + /* extra data associated with local object */ + void *cookie; +}; + +/* + * On 64-bit platforms where user code may run in 32-bits the driver must + * translate the buffer (and local binder) addresses apropriately. + */ + +struct binder_write_read { + signed long write_size; /* bytes to write */ + signed long write_consumed; /* bytes consumed by driver */ + unsigned long write_buffer; + signed long read_size; /* bytes to read */ + signed long read_consumed; /* bytes consumed by driver */ + unsigned long read_buffer; +}; + +/* Use with BINDER_VERSION, driver fills in fields. */ +struct binder_version { + /* driver protocol version -- increment with incompatible change */ + signed long protocol_version; +}; + +/* This is the current protocol version. */ +#define BINDER_CURRENT_PROTOCOL_VERSION 7 + +#define BINDER_WRITE_READ _IOWR('b', 1, struct binder_write_read) +#define BINDER_SET_IDLE_TIMEOUT _IOW('b', 3, int64_t) +#define BINDER_SET_MAX_THREADS _IOW('b', 5, size_t) +#define BINDER_SET_IDLE_PRIORITY _IOW('b', 6, int) +#define BINDER_SET_CONTEXT_MGR _IOW('b', 7, int) +#define BINDER_THREAD_EXIT _IOW('b', 8, int) +#define BINDER_VERSION _IOWR('b', 9, struct binder_version) + +/* + * NOTE: Two special error codes you should check for when calling + * in to the driver are: + * + * EINTR -- The operation has been interupted. This should be + * handled by retrying the ioctl() until a different error code + * is returned. + * + * ECONNREFUSED -- The driver is no longer accepting operations + * from your process. That is, the process is being destroyed. + * You should handle this by exiting from your process. Note + * that once this error code is returned, all further calls to + * the driver from any thread will return this same code. + */ + +enum transaction_flags { + TF_ONE_WAY = 0x01, /* this is a one-way call: async, no return */ + TF_ROOT_OBJECT = 0x04, /* contents are the component's root object */ + TF_STATUS_CODE = 0x08, /* contents are a 32-bit status code */ + TF_ACCEPT_FDS = 0x10, /* allow replies with file descriptors */ +}; + +struct binder_transaction_data { + /* The first two are only used for bcTRANSACTION and brTRANSACTION, + * identifying the target and contents of the transaction. + */ + union { + size_t handle; /* target descriptor of command transaction */ + void *ptr; /* target descriptor of return transaction */ + } target; + void *cookie; /* target object cookie */ + unsigned int code; /* transaction command */ + + /* General information about the transaction. */ + unsigned int flags; + pid_t sender_pid; + uid_t sender_euid; + size_t data_size; /* number of bytes of data */ + size_t offsets_size; /* number of bytes of offsets */ + + /* If this transaction is inline, the data immediately + * follows here; otherwise, it ends with a pointer to + * the data buffer. + */ + union { + struct { + /* transaction data */ + const void *buffer; + /* offsets from buffer to flat_binder_object structs */ + const void *offsets; + } ptr; + uint8_t buf[8]; + } data; +}; + +struct binder_ptr_cookie { + void *ptr; + void *cookie; +}; + +struct binder_pri_desc { + int priority; + int desc; +}; + +struct binder_pri_ptr_cookie { + int priority; + void *ptr; + void *cookie; +}; + +enum BinderDriverReturnProtocol { + BR_ERROR = _IOR('r', 0, int), + /* + * int: error code + */ + + BR_OK = _IO('r', 1), + /* No parameters! */ + + BR_TRANSACTION = _IOR('r', 2, struct binder_transaction_data), + BR_REPLY = _IOR('r', 3, struct binder_transaction_data), + /* + * binder_transaction_data: the received command. + */ + + BR_ACQUIRE_RESULT = _IOR('r', 4, int), + /* + * not currently supported + * int: 0 if the last bcATTEMPT_ACQUIRE was not successful. + * Else the remote object has acquired a primary reference. + */ + + BR_DEAD_REPLY = _IO('r', 5), + /* + * The target of the last transaction (either a bcTRANSACTION or + * a bcATTEMPT_ACQUIRE) is no longer with us. No parameters. + */ + + BR_TRANSACTION_COMPLETE = _IO('r', 6), + /* + * No parameters... always refers to the last transaction requested + * (including replies). Note that this will be sent even for + * asynchronous transactions. + */ + + BR_INCREFS = _IOR('r', 7, struct binder_ptr_cookie), + BR_ACQUIRE = _IOR('r', 8, struct binder_ptr_cookie), + BR_RELEASE = _IOR('r', 9, struct binder_ptr_cookie), + BR_DECREFS = _IOR('r', 10, struct binder_ptr_cookie), + /* + * void *: ptr to binder + * void *: cookie for binder + */ + + BR_ATTEMPT_ACQUIRE = _IOR('r', 11, struct binder_pri_ptr_cookie), + /* + * not currently supported + * int: priority + * void *: ptr to binder + * void *: cookie for binder + */ + + BR_NOOP = _IO('r', 12), + /* + * No parameters. Do nothing and examine the next command. It exists + * primarily so that we can replace it with a BR_SPAWN_LOOPER command. + */ + + BR_SPAWN_LOOPER = _IO('r', 13), + /* + * No parameters. The driver has determined that a process has no + * threads waiting to service incomming transactions. When a process + * receives this command, it must spawn a new service thread and + * register it via bcENTER_LOOPER. + */ + + BR_FINISHED = _IO('r', 14), + /* + * not currently supported + * stop threadpool thread + */ + + BR_DEAD_BINDER = _IOR('r', 15, void *), + /* + * void *: cookie + */ + BR_CLEAR_DEATH_NOTIFICATION_DONE = _IOR('r', 16, void *), + /* + * void *: cookie + */ + + BR_FAILED_REPLY = _IO('r', 17), + /* + * The the last transaction (either a bcTRANSACTION or + * a bcATTEMPT_ACQUIRE) failed (e.g. out of memory). No parameters. + */ +}; + +enum BinderDriverCommandProtocol { + BC_TRANSACTION = _IOW('c', 0, struct binder_transaction_data), + BC_REPLY = _IOW('c', 1, struct binder_transaction_data), + /* + * binder_transaction_data: the sent command. + */ + + BC_ACQUIRE_RESULT = _IOW('c', 2, int), + /* + * not currently supported + * int: 0 if the last BR_ATTEMPT_ACQUIRE was not successful. + * Else you have acquired a primary reference on the object. + */ + + BC_FREE_BUFFER = _IOW('c', 3, int), + /* + * void *: ptr to transaction data received on a read + */ + + BC_INCREFS = _IOW('c', 4, int), + BC_ACQUIRE = _IOW('c', 5, int), + BC_RELEASE = _IOW('c', 6, int), + BC_DECREFS = _IOW('c', 7, int), + /* + * int: descriptor + */ + + BC_INCREFS_DONE = _IOW('c', 8, struct binder_ptr_cookie), + BC_ACQUIRE_DONE = _IOW('c', 9, struct binder_ptr_cookie), + /* + * void *: ptr to binder + * void *: cookie for binder + */ + + BC_ATTEMPT_ACQUIRE = _IOW('c', 10, struct binder_pri_desc), + /* + * not currently supported + * int: priority + * int: descriptor + */ + + BC_REGISTER_LOOPER = _IO('c', 11), + /* + * No parameters. + * Register a spawned looper thread with the device. + */ + + BC_ENTER_LOOPER = _IO('c', 12), + BC_EXIT_LOOPER = _IO('c', 13), + /* + * No parameters. + * These two commands are sent as an application-level thread + * enters and exits the binder loop, respectively. They are + * used so the binder can have an accurate count of the number + * of looping threads it has available. + */ + + BC_REQUEST_DEATH_NOTIFICATION = _IOW('c', 14, struct binder_ptr_cookie), + /* + * void *: ptr to binder + * void *: cookie + */ + + BC_CLEAR_DEATH_NOTIFICATION = _IOW('c', 15, struct binder_ptr_cookie), + /* + * void *: ptr to binder + * void *: cookie + */ + + BC_DEAD_BINDER_DONE = _IOW('c', 16, void *), + /* + * void *: cookie + */ +}; + +#endif /* _LINUX_BINDER_H */ + diff --git a/include/linux/logger.h b/include/linux/logger.h new file mode 100644 index 00000000000..a562434d741 --- /dev/null +++ b/include/linux/logger.h @@ -0,0 +1,48 @@ +/* include/linux/logger.h + * + * Copyright (C) 2007-2008 Google, Inc. + * Author: Robert Love <rlove@android.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef _LINUX_LOGGER_H +#define _LINUX_LOGGER_H + +#include <linux/types.h> +#include <linux/ioctl.h> + +struct logger_entry { + __u16 len; /* length of the payload */ + __u16 __pad; /* no matter what, we get 2 bytes of padding */ + __s32 pid; /* generating process's pid */ + __s32 tid; /* generating process's tid */ + __s32 sec; /* seconds since Epoch */ + __s32 nsec; /* nanoseconds */ + char msg[0]; /* the entry's payload */ +}; + +#define LOGGER_LOG_RADIO "log_radio" /* radio-related messages */ +#define LOGGER_LOG_EVENTS "log_events" /* system/hardware events */ +#define LOGGER_LOG_MAIN "log_main" /* everything else */ + +#define LOGGER_ENTRY_MAX_LEN (4*1024) +#define LOGGER_ENTRY_MAX_PAYLOAD \ + (LOGGER_ENTRY_MAX_LEN - sizeof(struct logger_entry)) + +#define __LOGGERIO 0xAE + +#define LOGGER_GET_LOG_BUF_SIZE _IO(__LOGGERIO, 1) /* size of log */ +#define LOGGER_GET_LOG_LEN _IO(__LOGGERIO, 2) /* used log len */ +#define LOGGER_GET_NEXT_ENTRY_LEN _IO(__LOGGERIO, 3) /* next entry len */ +#define LOGGER_FLUSH_LOG _IO(__LOGGERIO, 4) /* flush log */ + +#endif /* _LINUX_LOGGER_H */ diff --git a/include/linux/mm.h b/include/linux/mm.h index ffee2f74341..5387d0ba558 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -714,7 +714,7 @@ static inline int shmem_lock(struct file *file, int lock, } #endif struct file *shmem_file_setup(char *name, loff_t size, unsigned long flags); - +void shmem_set_file(struct vm_area_struct *, struct file *); int shmem_zero_setup(struct vm_area_struct *); #ifndef CONFIG_MMU diff --git a/init/Kconfig b/init/Kconfig index 86b00c53fad..4fe525fac89 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -732,6 +732,24 @@ config AIO by some high performance threaded applications. Disabling this option saves about 7k. +config ASHMEM + bool "Enable Android's Shared Memory Subsystem" + default n + depends on SHMEM || TINY_SHMEM + help + The ashmem subsystem is a new shared memory allocator, similar to + POSIX SHM but with different behavior and sporting a simpler + file-based API. + +config ASHMEM + bool "Enable Android's Shared Memory Subsystem" + default n + depends on SHMEM || TINY_SHMEM + help + The ashmem subsystem is a new shared memory allocator, similar to + POSIX SHM but with different behavior and sporting a simpler + file-based API. + config VM_EVENT_COUNTERS default y bool "Enable VM event counters for /proc/vmstat" if EMBEDDED diff --git a/mm/Makefile b/mm/Makefile index c06b45a1ff5..0ebb458c746 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -22,6 +22,7 @@ obj-$(CONFIG_NUMA) += mempolicy.o obj-$(CONFIG_SPARSEMEM) += sparse.o obj-$(CONFIG_SPARSEMEM_VMEMMAP) += sparse-vmemmap.o obj-$(CONFIG_SHMEM) += shmem.o +obj-$(CONFIG_ASHMEM) += ashmem.o obj-$(CONFIG_TMPFS_POSIX_ACL) += shmem_acl.o obj-$(CONFIG_TINY_SHMEM) += tiny-shmem.o obj-$(CONFIG_SLOB) += slob.o diff --git a/mm/ashmem.c b/mm/ashmem.c new file mode 100644 index 00000000000..fc367a0c2bc --- /dev/null +++ b/mm/ashmem.c @@ -0,0 +1,657 @@ +/* drivers/android/ashmem.c +** +** Android / Anonymous Shared Memory Subsystem, ashmem +** +** Copyright (C) 2008 Google, Inc. +** +** Robert Love <rlove@google.com> +** +** This software is licensed under the terms of the GNU General Public +** License version 2, as published by the Free Software Foundation, and +** may be copied, distributed, and modified under those terms. +** +** This program is distributed in the hope that it will be useful, +** but WITHOUT ANY WARRANTY; without even the implied warranty of +** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +** GNU General Public License for more details. +*/ + +#include <linux/module.h> +#include <linux/file.h> +#include <linux/fs.h> +#include <linux/miscdevice.h> +#include <linux/security.h> +#include <linux/mm.h> +#include <linux/mman.h> +#include <linux/uaccess.h> +#include <linux/personality.h> +#include <linux/bitops.h> +#include <linux/mutex.h> +#include <linux/shmem_fs.h> +#include <linux/ashmem.h> + +/* + * ashmem_area - android shared memory area + * Lifecycle: From our parent file's open() until its release() + * Locking: Protected by `ashmem_mutex' + * Big Note: Mappings do NOT pin this structure; it dies on close() + */ +struct ashmem_area { + char name[ASHMEM_NAME_LEN]; /* optional name for /proc/pid/maps */ + struct list_head unpinned_list; /* list of all ashmem areas */ + struct file *file; /* the shmem-based backing file */ + size_t size; /* size of the mapping, in bytes */ + unsigned long prot_mask; /* allowed prot bits, as vm_flags */ +}; + +/* + * ashmem_range - represents an interval of unpinned (evictable) pages + * Lifecycle: From unpin to pin + * Locking: Protected by `ashmem_mutex' + */ +struct ashmem_range { + struct list_head lru; /* entry in LRU list */ + struct list_head unpinned; /* entry in its area's unpinned list */ + struct ashmem_area *asma; /* associated area */ + size_t pgstart; /* starting page, inclusive */ + size_t pgend; /* ending page, inclusive */ + unsigned int purged; /* ASHMEM_NOT or ASHMEM_WAS_PURGED */ +}; + +/* LRU list of unpinned pages, protected by ashmem_mutex */ +static LIST_HEAD(ashmem_lru_list); + +/* Count of pages on our LRU list, protected by ashmem_mutex */ +static unsigned long lru_count; + +/* + * ashmem_mutex - protects the list of and each individual ashmem_area + * + * Lock Ordering: ashmex_mutex -> i_mutex -> i_alloc_sem + */ +static DEFINE_MUTEX(ashmem_mutex); + +static struct kmem_cache *ashmem_area_cachep __read_mostly; +static struct kmem_cache *ashmem_range_cachep __read_mostly; + +#define range_size(range) \ + ((range)->pgend - (range)->pgstart + 1) + +#define range_on_lru(range) \ + ((range)->purged == ASHMEM_NOT_PURGED) + +#define page_range_subsumes_range(range, start, end) \ + (((range)->pgstart >= (start)) && ((range)->pgend <= (end))) + +#define page_range_subsumed_by_range(range, start, end) \ + (((range)->pgstart <= (start)) && ((range)->pgend >= (end))) + +#define page_in_range(range, page) \ + (((range)->pgstart <= (page)) && ((range)->pgend >= (page))) + +#define page_range_in_range(range, start, end) \ + (page_in_range(range, start) || page_in_range(range, end) || \ + page_range_subsumes_range(range, start, end)) + +#define range_before_page(range, page) \ + ((range)->pgend < (page)) + +#define PROT_MASK (PROT_EXEC | PROT_READ | PROT_WRITE) + +static inline void lru_add(struct ashmem_range *range) +{ + list_add_tail(&range->lru, &ashmem_lru_list); + lru_count += range_size(range); +} + +static inline void lru_del(struct ashmem_range *range) +{ + list_del(&range->lru); + lru_count -= range_size(range); +} + +/* + * range_alloc - allocate and initialize a new ashmem_range structure + * + * 'asma' - associated ashmem_area + * 'prev_range' - the previous ashmem_range in the sorted asma->unpinned list + * 'purged' - initial purge value (ASMEM_NOT_PURGED or ASHMEM_WAS_PURGED) + * 'start' - starting page, inclusive + * 'end' - ending page, inclusive + * + * Caller must hold ashmem_mutex. + */ +static int range_alloc(struct ashmem_area *asma, + struct ashmem_range *prev_range, unsigned int purged, + size_t start, size_t end) +{ + struct ashmem_range *range; + + range = kmem_cache_zalloc(ashmem_range_cachep, GFP_KERNEL); + if (unlikely(!range)) + return -ENOMEM; + + range->asma = asma; + range->pgstart = start; + range->pgend = end; + range->purged = purged; + + list_add_tail(&range->unpinned, &prev_range->unpinned); + + if (range_on_lru(range)) + lru_add(range); + + return 0; +} + +static void range_del(struct ashmem_range *range) +{ + list_del(&range->unpinned); + if (range_on_lru(range)) + lru_del(range); + kmem_cache_free(ashmem_range_cachep, range); +} + +/* + * range_shrink - shrinks a range + * + * Caller must hold ashmem_mutex. + */ +static inline void range_shrink(struct ashmem_range *range, + size_t start, size_t end) +{ + size_t pre = range_size(range); + + range->pgstart = start; + range->pgend = end; + + if (range_on_lru(range)) + lru_count -= pre - range_size(range); +} + +static int ashmem_open(struct inode *inode, struct file *file) +{ + struct ashmem_area *asma; + int ret; + + ret = nonseekable_open(inode, file); + if (unlikely(ret)) + return ret; + + asma = kmem_cache_zalloc(ashmem_area_cachep, GFP_KERNEL); + if (unlikely(!asma)) + return -ENOMEM; + + INIT_LIST_HEAD(&asma->unpinned_list); + asma->prot_mask = PROT_MASK; + file->private_data = asma; + + return 0; +} + +static int ashmem_release(struct inode *ignored, struct file *file) +{ + struct ashmem_area *asma = file->private_data; + struct ashmem_range *range, *next; + + mutex_lock(&ashmem_mutex); + list_for_each_entry_safe(range, next, &asma->unpinned_list, unpinned) + range_del(range); + mutex_unlock(&ashmem_mutex); + + if (asma->file) + fput(asma->file); + kmem_cache_free(ashmem_area_cachep, asma); + + return 0; +} + +static int ashmem_mmap(struct file *file, struct vm_area_struct *vma) +{ + struct ashmem_area *asma = file->private_data; + int ret = 0; + + mutex_lock(&ashmem_mutex); + + /* user needs to SET_SIZE before mapping */ + if (unlikely(!asma->size)) { + ret = -EINVAL; + goto out; + } + + /* requested protection bits must match our allowed protection mask */ + if (unlikely((vma->vm_flags & ~asma->prot_mask) & PROT_MASK)) { + ret = -EPERM; + goto out; + } + + if (!asma->file) { + char *name = ASHMEM_NAME_DEF; + struct file *vmfile; + + if (asma->name[0] != '\0') + name = asma->name; + + /* ... and allocate the backing shmem file */ + vmfile = shmem_file_setup(name, asma->size, vma->vm_flags); + if (unlikely(IS_ERR(vmfile))) { + ret = PTR_ERR(vmfile); + goto out; + } + asma->file = vmfile; + } + get_file(asma->file); + + shmem_set_file(vma, asma->file); + vma->vm_flags |= VM_CAN_NONLINEAR; + +out: + mutex_unlock(&ashmem_mutex); + return ret; +} + +/* + * ashmem_shrink - our cache shrinker, called from mm/vmscan.c :: shrink_slab + * + * 'nr_to_scan' is the number of objects (pages) to prune, or 0 to query how + * many objects (pages) we have in total. + * + * 'gfp_mask' is the mask of the allocation that got us into this mess. + * + * Return value is the number of objects (pages) remaining, or -1 if we cannot + * proceed without risk of deadlock (due to gfp_mask). + * + * We approximate LRU via least-recently-unpinned, jettisoning unpinned partial + * chunks of ashmem regions LRU-wise one-at-a-time until we hit 'nr_to_scan' + * pages freed. + */ +static int ashmem_shrink(int nr_to_scan, gfp_t gfp_mask) +{ + struct ashmem_range *range, *next; + + /* We might recurse into filesystem code, so bail out if necessary */ + if (nr_to_scan && !(gfp_mask & __GFP_FS)) + return -1; + if (!nr_to_scan) + return lru_count; + + mutex_lock(&ashmem_mutex); + list_for_each_entry_safe(range, next, &ashmem_lru_list, lru) { + struct inode *inode = range->asma->file->f_dentry->d_inode; + loff_t start = range->pgstart * PAGE_SIZE; + loff_t end = (range->pgend + 1) * PAGE_SIZE - 1; + + vmtruncate_range(inode, start, end); + range->purged = ASHMEM_WAS_PURGED; + lru_del(range); + + nr_to_scan -= range_size(range); + if (nr_to_scan <= 0) + break; + } + mutex_unlock(&ashmem_mutex); + + return lru_count; +} + +static struct shrinker ashmem_shrinker = { + .shrink = ashmem_shrink, + .seeks = DEFAULT_SEEKS * 4, +}; + +static int set_prot_mask(struct ashmem_area *asma, unsigned long prot) +{ + int ret = 0; + + mutex_lock(&ashmem_mutex); + + /* the user can only remove, not add, protection bits */ + if (unlikely((asma->prot_mask & prot) != prot)) { + ret = -EINVAL; + goto out; + } + + /* does the application expect PROT_READ to imply PROT_EXEC? */ + if ((prot & PROT_READ) && (current->personality & READ_IMPLIES_EXEC)) + prot |= PROT_EXEC; + + asma->prot_mask = prot; + +out: + mutex_unlock(&ashmem_mutex); + return ret; +} + +static int set_name(struct ashmem_area *asma, void __user *name) +{ + int ret = 0; + + mutex_lock(&ashmem_mutex); + + /* cannot change an existing mapping's name */ + if (unlikely(asma->file)) { + ret = -EINVAL; + goto out; + } + + if (unlikely(copy_from_user(asma->name, name, ASHMEM_NAME_LEN))) + ret = -EFAULT; + asma->name[ASHMEM_NAME_LEN-1] = '\0'; + +out: + mutex_unlock(&ashmem_mutex); + + return ret; +} + +static int get_name(struct ashmem_area *asma, void __user *name) +{ + int ret = 0; + + mutex_lock(&ashmem_mutex); + if (asma->name[0] != '\0') { + size_t len; + + /* + * Copying only `len', instead of ASHMEM_NAME_LEN, bytes + * prevents us from revealing one user's stack to another. + */ + len = strlen(asma->name) + 1; + if (unlikely(copy_to_user(name, asma->name, len))) + ret = -EFAULT; + } else { + if (unlikely(copy_to_user(name, ASHMEM_NAME_DEF, + sizeof(ASHMEM_NAME_DEF)))) + ret = -EFAULT; + } + mutex_unlock(&ashmem_mutex); + + return ret; +} + +/* + * ashmem_pin - pin the given ashmem region, returning whether it was + * previously purged (ASHMEM_WAS_PURGED) or not (ASHMEM_NOT_PURGED). + * + * Caller must hold ashmem_mutex. + */ +static int ashmem_pin(struct ashmem_area *asma, size_t pgstart, size_t pgend) +{ + struct ashmem_range *range, *next; + int ret = ASHMEM_NOT_PURGED; + + list_for_each_entry_safe(range, next, &asma->unpinned_list, unpinned) { + /* moved past last applicable page; we can short circuit */ + if (range_before_page(range, pgstart)) + break; + + /* + * The user can ask us to pin pages that span multiple ranges, + * or to pin pages that aren't even unpinned, so this is messy. + * + * Four cases: + * 1. The requested range subsumes an existing range, so we + * just remove the entire matching range. + * 2. The requested range overlaps the start of an existing + * range, so we just update that range. + * 3. The requested range overlaps the end of an existing + * range, so we just update that range. + * 4. The requested range punches a hole in an existing range, + * so we have to update one side of the range and then + * create a new range for the other side. + */ + if (page_range_in_range(range, pgstart, pgend)) { + ret |= range->purged; + + /* Case #1: Easy. Just nuke the whole thing. */ + if (page_range_subsumes_range(range, pgstart, pgend)) { + range_del(range); + continue; + } + + /* Case #2: We overlap from the start, so adjust it */ + if (range->pgstart >= pgstart) { + range_shrink(range, pgend + 1, range->pgend); + continue; + } + + /* Case #3: We overlap from the rear, so adjust it */ + if (range->pgend <= pgend) { + range_shrink(range, range->pgstart, pgstart-1); + continue; + } + + /* + * Case #4: We eat a chunk out of the middle. A bit + * more complicated, we allocate a new range for the + * second half and adjust the first chunk's endpoint. + */ + range_alloc(asma, range, range->purged, + pgend + 1, range->pgend); + range_shrink(range, range->pgstart, pgstart - 1); + break; + } + } + + return ret; +} + +/* + * ashmem_unpin - unpin the given range of pages. Returns zero on success. + * + * Caller must hold ashmem_mutex. + */ +static int ashmem_unpin(struct ashmem_area *asma, size_t pgstart, size_t pgend) +{ + struct ashmem_range *range, *next; + unsigned int purged = ASHMEM_NOT_PURGED; + +restart: + list_for_each_entry_safe(range, next, &asma->unpinned_list, unpinned) { + /* short circuit: this is our insertion point */ + if (range_before_page(range, pgstart)) + break; + + /* + * The user can ask us to unpin pages that are already entirely + * or partially pinned. We handle those two cases here. + */ + if (page_range_subsumed_by_range(range, pgstart, pgend)) + return 0; + if (page_range_in_range(range, pgstart, pgend)) { + pgstart = min_t(size_t, range->pgstart, pgstart), + pgend = max_t(size_t, range->pgend, pgend); + purged |= range->purged; + range_del(range); + goto restart; + } + } + + return range_alloc(asma, range, purged, pgstart, pgend); +} + +/* + * ashmem_get_pin_status - Returns ASHMEM_IS_UNPINNED if _any_ pages in the + * given interval are unpinned and ASHMEM_IS_PINNED otherwise. + * + * Caller must hold ashmem_mutex. + */ +static int ashmem_get_pin_status(struct ashmem_area *asma, size_t pgstart, + size_t pgend) +{ + struct ashmem_range *range; + int ret = ASHMEM_IS_PINNED; + + list_for_each_entry(range, &asma->unpinned_list, unpinned) { + if (range_before_page(range, pgstart)) + break; + if (page_range_in_range(range, pgstart, pgend)) { + ret = ASHMEM_IS_UNPINNED; + break; + } + } + + return ret; +} + +static int ashmem_pin_unpin(struct ashmem_area *asma, unsigned long cmd, + void __user *p) +{ + struct ashmem_pin pin; + size_t pgstart, pgend; + int ret = -EINVAL; + + if (unlikely(!asma->file)) + return -EINVAL; + + if (unlikely(copy_from_user(&pin, p, sizeof(pin)))) + return -EFAULT; + + /* per custom, you can pass zero for len to mean "everything onward" */ + if (!pin.len) + pin.len = asma->size - pin.offset; + + if (unlikely((pin.offset | pin.len) & ~PAGE_MASK)) + return -EINVAL; + + if (unlikely(((__u32) -1) - pin.offset < pin.len)) + return -EINVAL; + + if (unlikely(asma->size < pin.offset + pin.len)) + return -EINVAL; + + pgstart = pin.offset / PAGE_SIZE; + pgend = pgstart + (pin.len / PAGE_SIZE) - 1; + + mutex_lock(&ashmem_mutex); + + switch (cmd) { + case ASHMEM_PIN: + ret = ashmem_pin(asma, pgstart, pgend); + break; + case ASHMEM_UNPIN: + ret = ashmem_unpin(asma, pgstart, pgend); + break; + case ASHMEM_GET_PIN_STATUS: + ret = ashmem_get_pin_status(asma, pgstart, pgend); + break; + } + + mutex_unlock(&ashmem_mutex); + + return ret; +} + +static long ashmem_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + struct ashmem_area *asma = file->private_data; + long ret = -ENOTTY; + + switch (cmd) { + case ASHMEM_SET_NAME: + ret = set_name(asma, (void __user *) arg); + break; + case ASHMEM_GET_NAME: + ret = get_name(asma, (void __user *) arg); + break; + case ASHMEM_SET_SIZE: + ret = -EINVAL; + if (!asma->file && !(arg & ~PAGE_MASK)) { + ret = 0; + asma->size = (size_t) arg; + } + break; + case ASHMEM_GET_SIZE: + ret = asma->size; + break; + case ASHMEM_SET_PROT_MASK: + ret = set_prot_mask(asma, arg); + break; + case ASHMEM_GET_PROT_MASK: + ret = asma->prot_mask; + break; + case ASHMEM_PIN: + case ASHMEM_UNPIN: + case ASHMEM_GET_PIN_STATUS: + ret = ashmem_pin_unpin(asma, cmd, (void __user *) arg); + break; + case ASHMEM_PURGE_ALL_CACHES: + ret = -EPERM; + if (capable(CAP_SYS_ADMIN)) { + ret = ashmem_shrink(0, GFP_KERNEL); + ashmem_shrink(ret, GFP_KERNEL); + } + break; + } + + return ret; +} + +static struct file_operations ashmem_fops = { + .owner = THIS_MODULE, + .open = ashmem_open, + .release = ashmem_release, + .mmap = ashmem_mmap, + .unlocked_ioctl = ashmem_ioctl, + .compat_ioctl = ashmem_ioctl, +}; + +static struct miscdevice ashmem_misc = { + .minor = MISC_DYNAMIC_MINOR, + .name = "ashmem", + .fops = &ashmem_fops, +}; + +static int __init ashmem_init(void) +{ + int ret; + + ashmem_area_cachep = kmem_cache_create("ashmem_area_cache", + sizeof(struct ashmem_area), + 0, 0, NULL); + if (unlikely(!ashmem_area_cachep)) { + printk(KERN_ERR "ashmem: failed to create slab cache\n"); + return -ENOMEM; + } + + ashmem_range_cachep = kmem_cache_create("ashmem_range_cache", + sizeof(struct ashmem_range), + 0, 0, NULL); + if (unlikely(!ashmem_range_cachep)) { + printk(KERN_ERR "ashmem: failed to create slab cache\n"); + return -ENOMEM; + } + + ret = misc_register(&ashmem_misc); + if (unlikely(ret)) { + printk(KERN_ERR "ashmem: failed to register misc device!\n"); + return ret; + } + + register_shrinker(&ashmem_shrinker); + + printk(KERN_INFO "ashmem: initialized\n"); + + return 0; +} + +static void __exit ashmem_exit(void) +{ + int ret; + + unregister_shrinker(&ashmem_shrinker); + + ret = misc_deregister(&ashmem_misc); + if (unlikely(ret)) + printk(KERN_ERR "ashmem: failed to unregister misc device!\n"); + + kmem_cache_destroy(ashmem_range_cachep); + kmem_cache_destroy(ashmem_area_cachep); + + printk(KERN_INFO "ashmem: unloaded\n"); +} + +module_init(ashmem_init); +module_exit(ashmem_exit); + +MODULE_LICENSE("GPL"); diff --git a/mm/shmem.c b/mm/shmem.c index 0ed075215e5..c2bb9245bb4 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -2587,6 +2587,14 @@ put_memory: } EXPORT_SYMBOL_GPL(shmem_file_setup); +void shmem_set_file(struct vm_area_struct *vma, struct file *file) +{ + if (vma->vm_file) + fput(vma->vm_file); + vma->vm_file = file; + vma->vm_ops = &shmem_vm_ops; +} + /** * shmem_zero_setup - setup a shared anonymous mapping * @vma: the vma to be mmapped is prepared by do_mmap_pgoff @@ -2600,9 +2608,7 @@ int shmem_zero_setup(struct vm_area_struct *vma) if (IS_ERR(file)) return PTR_ERR(file); - if (vma->vm_file) - fput(vma->vm_file); - vma->vm_file = file; - vma->vm_ops = &shmem_vm_ops; + shmem_set_file(vma, file); + return 0; } diff --git a/mm/tiny-shmem.c b/mm/tiny-shmem.c index 3e67d575ee6..b00e6fdcc56 100644 --- a/mm/tiny-shmem.c +++ b/mm/tiny-shmem.c @@ -97,6 +97,22 @@ put_memory: } EXPORT_SYMBOL_GPL(shmem_file_setup); +void shmem_set_file(struct vm_area_struct *vma, struct file *file) +{ + if (vma->vm_file) + fput(vma->vm_file); + vma->vm_file = file; + vma->vm_ops = &generic_file_vm_ops; +} + +void shmem_set_file(struct vm_area_struct *vma, struct file *file) +{ + if (vma->vm_file) + fput(vma->vm_file); + vma->vm_file = file; + vma->vm_ops = &generic_file_vm_ops; +} + /** * shmem_zero_setup - setup a shared anonymous mapping * @vma: the vma to be mmapped is prepared by do_mmap_pgoff @@ -110,10 +126,8 @@ int shmem_zero_setup(struct vm_area_struct *vma) if (IS_ERR(file)) return PTR_ERR(file); - if (vma->vm_file) - fput(vma->vm_file); - vma->vm_file = file; - vma->vm_ops = &generic_file_vm_ops; + shmem_set_file(vma, file); + return 0; } |