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-rw-r--r--arch/mips/Kconfig5
-rw-r--r--arch/mips/configs/ip27_defconfig2
-rw-r--r--arch/mips/dec/int-handler.S4
-rw-r--r--arch/mips/kernel/entry.S19
-rw-r--r--arch/mips/kernel/linux32.c47
-rw-r--r--arch/mips/kernel/scall64-64.S2
-rw-r--r--arch/mips/kernel/scall64-n32.S2
-rw-r--r--arch/mips/kernel/signal-common.h32
-rw-r--r--arch/mips/kernel/signal.c22
-rw-r--r--arch/mips/kernel/signal32.c39
-rw-r--r--arch/mips/kernel/signal_n32.c11
-rw-r--r--arch/mips/mm/Makefile14
-rw-r--r--arch/mips/mm/c-sb1.c6
-rw-r--r--arch/mips/mm/dma-coherent.c254
-rw-r--r--arch/mips/mm/dma-default.c (renamed from arch/mips/mm/dma-noncoherent.c)209
-rw-r--r--arch/mips/mm/dma-ip27.c257
-rw-r--r--arch/mips/mm/dma-ip32.c383
-rw-r--r--arch/mips/pci/Makefile2
-rw-r--r--arch/mips/pci/pci-dac.c79
-rw-r--r--include/asm-mips/atomic.h50
-rw-r--r--include/asm-mips/bitops.h33
-rw-r--r--include/asm-mips/compat-signal.h55
-rw-r--r--include/asm-mips/dma-mapping.h2
-rw-r--r--include/asm-mips/mach-generic/dma-coherence.h43
-rw-r--r--include/asm-mips/mach-generic/kmalloc.h1
-rw-r--r--include/asm-mips/mach-ip27/dma-coherence.h49
-rw-r--r--include/asm-mips/mach-ip32/dma-coherence.h71
-rw-r--r--include/asm-mips/mach-jazz/dma-coherence.h40
-rw-r--r--include/asm-mips/spinlock.h56
-rw-r--r--include/asm-mips/system.h20
-rw-r--r--include/asm-mips/uaccess.h10
31 files changed, 701 insertions, 1118 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 5fe195a41a8..a92ce6bd7cf 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -598,8 +598,6 @@ config SGI_IP32
select ARC
select ARC32
select BOOT_ELF32
- select OWN_DMA
- select DMA_IP32
select DMA_NONCOHERENT
select HW_HAS_PCI
select R5000_CPU_SCACHE
@@ -883,9 +881,6 @@ config DMA_NONCOHERENT
config DMA_NEED_PCI_MAP_STATE
bool
-config OWN_DMA
- bool
-
config EARLY_PRINTK
bool
diff --git a/arch/mips/configs/ip27_defconfig b/arch/mips/configs/ip27_defconfig
index 96090f28373..f21186c12d8 100644
--- a/arch/mips/configs/ip27_defconfig
+++ b/arch/mips/configs/ip27_defconfig
@@ -264,7 +264,7 @@ CONFIG_BINFMT_ELF=y
CONFIG_MIPS32_COMPAT=y
CONFIG_COMPAT=y
CONFIG_MIPS32_O32=y
-# CONFIG_MIPS32_N32 is not set
+CONFIG_MIPS32_N32=y
CONFIG_BINFMT_ELF32=y
#
diff --git a/arch/mips/dec/int-handler.S b/arch/mips/dec/int-handler.S
index b251ef864c3..00cecdcc75f 100644
--- a/arch/mips/dec/int-handler.S
+++ b/arch/mips/dec/int-handler.S
@@ -264,9 +264,6 @@
srlv t3,t1,t2
handle_it:
- LONG_L s0, TI_REGS($28)
- LONG_S sp, TI_REGS($28)
- PTR_LA ra, ret_from_irq
j dec_irq_dispatch
nop
@@ -277,7 +274,6 @@ fpu:
#endif
spurious:
- PTR_LA ra, _ret_from_irq
j spurious_interrupt
nop
END(plat_irq_dispatch)
diff --git a/arch/mips/kernel/entry.S b/arch/mips/kernel/entry.S
index f10b6a19f8b..0b78fcbf044 100644
--- a/arch/mips/kernel/entry.S
+++ b/arch/mips/kernel/entry.S
@@ -21,24 +21,21 @@
#endif
#ifndef CONFIG_PREEMPT
- .macro preempt_stop
- local_irq_disable
- .endm
#define resume_kernel restore_all
+#else
+#define __ret_from_irq ret_from_exception
#endif
.text
.align 5
-FEXPORT(ret_from_irq)
- LONG_S s0, TI_REGS($28)
-#ifdef CONFIG_PREEMPT
-FEXPORT(ret_from_exception)
-#else
- b _ret_from_irq
+#ifndef CONFIG_PREEMPT
FEXPORT(ret_from_exception)
- preempt_stop
+ local_irq_disable # preempt stop
+ b __ret_from_irq
#endif
-FEXPORT(_ret_from_irq)
+FEXPORT(ret_from_irq)
+ LONG_S s0, TI_REGS($28)
+FEXPORT(__ret_from_irq)
LONG_L t0, PT_STATUS(sp) # returning to kernel mode?
andi t0, t0, KU_USER
beqz t0, resume_kernel
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index ca7ad78f4de..fc4dd6c9dd8 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -39,6 +39,7 @@
#include <net/sock.h>
#include <net/scm.h>
+#include <asm/compat-signal.h>
#include <asm/ipc.h>
#include <asm/sim.h>
#include <asm/uaccess.h>
@@ -736,3 +737,49 @@ _sys32_clone(nabi_no_regargs struct pt_regs regs)
return do_fork(clone_flags, newsp, &regs, 0,
parent_tidptr, child_tidptr);
}
+
+/*
+ * Implement the event wait interface for the eventpoll file. It is the kernel
+ * part of the user space epoll_pwait(2).
+ */
+asmlinkage long compat_sys_epoll_pwait(int epfd,
+ struct epoll_event __user *events, int maxevents, int timeout,
+ const compat_sigset_t __user *sigmask, size_t sigsetsize)
+{
+ int error;
+ sigset_t ksigmask, sigsaved;
+
+ /*
+ * If the caller wants a certain signal mask to be set during the wait,
+ * we apply it here.
+ */
+ if (sigmask) {
+ if (sigsetsize != sizeof(sigset_t))
+ return -EINVAL;
+ if (!access_ok(VERIFY_READ, sigmask, sizeof(ksigmask)))
+ return -EFAULT;
+ if (__copy_conv_sigset_from_user(&ksigmask, sigmask))
+ return -EFAULT;
+ sigdelsetmask(&ksigmask, sigmask(SIGKILL) | sigmask(SIGSTOP));
+ sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
+ }
+
+ error = sys_epoll_wait(epfd, events, maxevents, timeout);
+
+ /*
+ * If we changed the signal mask, we need to restore the original one.
+ * In case we've got a signal while waiting, we do not restore the
+ * signal mask yet, and we allow do_signal() to deliver the signal on
+ * the way back to userspace, before the signal mask is restored.
+ */
+ if (sigmask) {
+ if (error == -EINTR) {
+ memcpy(&current->saved_sigmask, &sigsaved,
+ sizeof(sigsaved));
+ set_thread_flag(TIF_RESTORE_SIGMASK);
+ } else
+ sigprocmask(SIG_SETMASK, &sigsaved, NULL);
+ }
+
+ return error;
+}
diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
index e569b846e9a..10e9a18630a 100644
--- a/arch/mips/kernel/scall64-64.S
+++ b/arch/mips/kernel/scall64-64.S
@@ -470,4 +470,4 @@ sys_call_table:
PTR sys_get_robust_list
PTR sys_kexec_load /* 5270 */
PTR sys_getcpu
- PTR sys_epoll_pwait
+ PTR compat_sys_epoll_pwait
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index ee8802b5975..2ceda4644a4 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -396,4 +396,4 @@ EXPORT(sysn32_call_table)
PTR compat_sys_get_robust_list
PTR compat_sys_kexec_load
PTR sys_getcpu
- PTR sys_epoll_pwait
+ PTR compat_sys_epoll_pwait
diff --git a/arch/mips/kernel/signal-common.h b/arch/mips/kernel/signal-common.h
index 9a8abd67ec5..fdbdbdc65b5 100644
--- a/arch/mips/kernel/signal-common.h
+++ b/arch/mips/kernel/signal-common.h
@@ -19,37 +19,7 @@
# define DEBUGP(fmt, args...)
#endif
-/*
- * Horribly complicated - with the bloody RM9000 workarounds enabled
- * the signal trampolines is moving to the end of the structure so we can
- * increase the alignment without breaking software compatibility.
- */
-#if ICACHE_REFILLS_WORKAROUND_WAR == 0
-
-struct sigframe {
- u32 sf_ass[4]; /* argument save space for o32 */
- u32 sf_code[2]; /* signal trampoline */
- struct sigcontext sf_sc;
- sigset_t sf_mask;
-};
-
-#else /* ICACHE_REFILLS_WORKAROUND_WAR */
-
-struct sigframe {
- u32 sf_ass[4]; /* argument save space for o32 */
- u32 sf_pad[2];
- struct sigcontext sf_sc; /* hw context */
- sigset_t sf_mask;
- u32 sf_code[8] ____cacheline_aligned; /* signal trampoline */
-};
-
-#endif /* !ICACHE_REFILLS_WORKAROUND_WAR */
-
-/*
- * handle hardware context
- */
-extern int setup_sigcontext(struct pt_regs *, struct sigcontext __user *);
-extern int restore_sigcontext(struct pt_regs *, struct sigcontext __user *);
+#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
/*
* Determine which stack to use..
diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index 54398af2371..b2e9ab1bb10 100644
--- a/arch/mips/kernel/signal.c
+++ b/arch/mips/kernel/signal.c
@@ -34,10 +34,20 @@
#include "signal-common.h"
-#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
-
+/*
+ * Horribly complicated - with the bloody RM9000 workarounds enabled
+ * the signal trampolines is moving to the end of the structure so we can
+ * increase the alignment without breaking software compatibility.
+ */
#if ICACHE_REFILLS_WORKAROUND_WAR == 0
+struct sigframe {
+ u32 sf_ass[4]; /* argument save space for o32 */
+ u32 sf_code[2]; /* signal trampoline */
+ struct sigcontext sf_sc;
+ sigset_t sf_mask;
+};
+
struct rt_sigframe {
u32 rs_ass[4]; /* argument save space for o32 */
u32 rs_code[2]; /* signal trampoline */
@@ -47,6 +57,14 @@ struct rt_sigframe {
#else
+struct sigframe {
+ u32 sf_ass[4]; /* argument save space for o32 */
+ u32 sf_pad[2];
+ struct sigcontext sf_sc; /* hw context */
+ sigset_t sf_mask;
+ u32 sf_code[8] ____cacheline_aligned; /* signal trampoline */
+};
+
struct rt_sigframe {
u32 rs_ass[4]; /* argument save space for o32 */
u32 rs_pad[2];
diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c
index 183fc7e55f3..c28cb21514c 100644
--- a/arch/mips/kernel/signal32.c
+++ b/arch/mips/kernel/signal32.c
@@ -8,6 +8,7 @@
* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
*/
#include <linux/cache.h>
+#include <linux/compat.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/smp.h>
@@ -24,6 +25,7 @@
#include <asm/abi.h>
#include <asm/asm.h>
+#include <asm/compat-signal.h>
#include <linux/bitops.h>
#include <asm/cacheflush.h>
#include <asm/sim.h>
@@ -104,8 +106,6 @@ typedef struct compat_siginfo {
#define __NR_O32_rt_sigreturn 4193
#define __NR_O32_restart_syscall 4253
-#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
-
/* 32-bit compatibility types */
#define _NSIG_BPW32 32
@@ -139,8 +139,20 @@ struct ucontext32 {
sigset_t32 uc_sigmask; /* mask last for extensibility */
};
+/*
+ * Horribly complicated - with the bloody RM9000 workarounds enabled
+ * the signal trampolines is moving to the end of the structure so we can
+ * increase the alignment without breaking software compatibility.
+ */
#if ICACHE_REFILLS_WORKAROUND_WAR == 0
+struct sigframe32 {
+ u32 sf_ass[4]; /* argument save space for o32 */
+ u32 sf_code[2]; /* signal trampoline */
+ struct sigcontext32 sf_sc;
+ sigset_t sf_mask;
+};
+
struct rt_sigframe32 {
u32 rs_ass[4]; /* argument save space for o32 */
u32 rs_code[2]; /* signal trampoline */
@@ -150,6 +162,14 @@ struct rt_sigframe32 {
#else /* ICACHE_REFILLS_WORKAROUND_WAR */
+struct sigframe32 {
+ u32 sf_ass[4]; /* argument save space for o32 */
+ u32 sf_pad[2];
+ struct sigcontext32 sf_sc; /* hw context */
+ sigset_t sf_mask;
+ u32 sf_code[8] ____cacheline_aligned; /* signal trampoline */
+};
+
struct rt_sigframe32 {
u32 rs_ass[4]; /* argument save space for o32 */
u32 rs_pad[2];
@@ -493,13 +513,13 @@ int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
asmlinkage void sys32_sigreturn(nabi_no_regargs struct pt_regs regs)
{
- struct sigframe __user *frame;
+ struct sigframe32 __user *frame;
sigset_t blocked;
- frame = (struct sigframe __user *) regs.regs[29];
+ frame = (struct sigframe32 __user *) regs.regs[29];
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
- if (__copy_from_user(&blocked, &frame->sf_mask, sizeof(blocked)))
+ if (__copy_conv_sigset_from_user(&blocked, &frame->sf_mask))
goto badframe;
sigdelsetmask(&blocked, ~_BLOCKABLE);
@@ -536,7 +556,7 @@ asmlinkage void sys32_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
frame = (struct rt_sigframe32 __user *) regs.regs[29];
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
- if (__copy_from_user(&set, &frame->rs_uc.uc_sigmask, sizeof(set)))
+ if (__copy_conv_sigset_from_user(&set, &frame->rs_uc.uc_sigmask))
goto badframe;
sigdelsetmask(&set, ~_BLOCKABLE);
@@ -581,7 +601,7 @@ badframe:
int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
int signr, sigset_t *set)
{
- struct sigframe __user *frame;
+ struct sigframe32 __user *frame;
int err = 0;
frame = get_sigframe(ka, regs, sizeof(*frame));
@@ -591,7 +611,8 @@ int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
err |= install_sigtramp(frame->sf_code, __NR_O32_sigreturn);
err |= setup_sigcontext32(regs, &frame->sf_sc);
- err |= __copy_to_user(&frame->sf_mask, set, sizeof(*set));
+ err |= __copy_conv_sigset_to_user(&frame->sf_mask, set);
+
if (err)
goto give_sigsegv;
@@ -650,7 +671,7 @@ int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
err |= __put_user(current->sas_ss_size,
&frame->rs_uc.uc_stack.ss_size);
err |= setup_sigcontext32(regs, &frame->rs_uc.uc_mcontext);
- err |= __copy_to_user(&frame->rs_uc.uc_sigmask, set, sizeof(*set));
+ err |= __copy_conv_sigset_to_user(&frame->rs_uc.uc_sigmask, set);
if (err)
goto give_sigsegv;
diff --git a/arch/mips/kernel/signal_n32.c b/arch/mips/kernel/signal_n32.c
index 57456e6a0c6..7ca2a078841 100644
--- a/arch/mips/kernel/signal_n32.c
+++ b/arch/mips/kernel/signal_n32.c
@@ -31,6 +31,7 @@
#include <asm/asm.h>
#include <asm/cacheflush.h>
+#include <asm/compat-signal.h>
#include <asm/sim.h>
#include <asm/uaccess.h>
#include <asm/ucontext.h>
@@ -47,7 +48,9 @@
#define __NR_N32_rt_sigreturn 6211
#define __NR_N32_restart_syscall 6214
-#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+extern int setup_sigcontext(struct pt_regs *, struct sigcontext __user *);
+extern int restore_sigcontext(struct pt_regs *, struct sigcontext __user *);
+
/* IRIX compatible stack_t */
typedef struct sigaltstack32 {
@@ -61,7 +64,7 @@ struct ucontextn32 {
s32 uc_link;
stack32_t uc_stack;
struct sigcontext uc_mcontext;
- sigset_t uc_sigmask; /* mask last for extensibility */
+ compat_sigset_t uc_sigmask; /* mask last for extensibility */
};
#if ICACHE_REFILLS_WORKAROUND_WAR == 0
@@ -127,7 +130,7 @@ asmlinkage void sysn32_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
frame = (struct rt_sigframe_n32 __user *) regs.regs[29];
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
- if (__copy_from_user(&set, &frame->rs_uc.uc_sigmask, sizeof(set)))
+ if (__copy_conv_sigset_from_user(&set, &frame->rs_uc.uc_sigmask))
goto badframe;
sigdelsetmask(&set, ~_BLOCKABLE);
@@ -193,7 +196,7 @@ int setup_rt_frame_n32(struct k_sigaction * ka,
err |= __put_user(current->sas_ss_size,
&frame->rs_uc.uc_stack.ss_size);
err |= setup_sigcontext(regs, &frame->rs_uc.uc_mcontext);
- err |= __copy_to_user(&frame->rs_uc.uc_sigmask, set, sizeof(*set));
+ err |= __copy_conv_sigset_to_user(&frame->rs_uc.uc_sigmask, set);
if (err)
goto give_sigsegv;
diff --git a/arch/mips/mm/Makefile b/arch/mips/mm/Makefile
index 19e41fd186c..de5727385bc 100644
--- a/arch/mips/mm/Makefile
+++ b/arch/mips/mm/Makefile
@@ -2,8 +2,8 @@
# Makefile for the Linux/MIPS-specific parts of the memory manager.
#
-obj-y += cache.o extable.o fault.o init.o pgtable.o \
- tlbex.o tlbex-fault.o
+obj-y += cache.o dma-default.o extable.o fault.o \
+ init.o pgtable.o tlbex.o tlbex-fault.o
obj-$(CONFIG_32BIT) += ioremap.o pgtable-32.o
obj-$(CONFIG_64BIT) += pgtable-64.o
@@ -32,14 +32,4 @@ obj-$(CONFIG_R5000_CPU_SCACHE) += sc-r5k.o
obj-$(CONFIG_RM7000_CPU_SCACHE) += sc-rm7k.o
obj-$(CONFIG_MIPS_CPU_SCACHE) += sc-mips.o
-#
-# Choose one DMA coherency model
-#
-ifndef CONFIG_OWN_DMA
-obj-$(CONFIG_DMA_COHERENT) += dma-coherent.o
-obj-$(CONFIG_DMA_NONCOHERENT) += dma-noncoherent.o
-endif
-obj-$(CONFIG_DMA_IP27) += dma-ip27.o
-obj-$(CONFIG_DMA_IP32) += dma-ip32.o
-
EXTRA_AFLAGS := $(CFLAGS)
diff --git a/arch/mips/mm/c-sb1.c b/arch/mips/mm/c-sb1.c
index 3a8afd47fea..9ea460b16bd 100644
--- a/arch/mips/mm/c-sb1.c
+++ b/arch/mips/mm/c-sb1.c
@@ -259,6 +259,12 @@ static void sb1_flush_cache_data_page(unsigned long addr)
on_each_cpu(sb1_flush_cache_data_page_ipi, (void *) addr, 1, 1);
}
#else
+
+static void local_sb1_flush_cache_data_page(unsigned long addr)
+{
+ __sb1_writeback_inv_dcache_range(addr, addr + PAGE_SIZE);
+}
+
void sb1_flush_cache_data_page(unsigned long)
__attribute__((alias("local_sb1_flush_cache_data_page")));
#endif
diff --git a/arch/mips/mm/dma-coherent.c b/arch/mips/mm/dma-coherent.c
deleted file mode 100644
index 5697c6e250a..00000000000
--- a/arch/mips/mm/dma-coherent.c
+++ /dev/null
@@ -1,254 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2000 Ani Joshi <ajoshi@unixbox.com>
- * Copyright (C) 2000, 2001 Ralf Baechle <ralf@gnu.org>
- * swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
- */
-#include <linux/types.h>
-#include <linux/dma-mapping.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/string.h>
-
-#include <asm/cache.h>
-#include <asm/io.h>
-
-void *dma_alloc_noncoherent(struct device *dev, size_t size,
- dma_addr_t * dma_handle, gfp_t gfp)
-{
- void *ret;
- /* ignore region specifiers */
- gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
-
- if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
- gfp |= GFP_DMA;
- ret = (void *) __get_free_pages(gfp, get_order(size));
-
- if (ret != NULL) {
- memset(ret, 0, size);
- *dma_handle = virt_to_phys(ret);
- }
-
- return ret;
-}
-
-EXPORT_SYMBOL(dma_alloc_noncoherent);
-
-void *dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t * dma_handle, gfp_t gfp)
- __attribute__((alias("dma_alloc_noncoherent")));
-
-EXPORT_SYMBOL(dma_alloc_coherent);
-
-void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle)
-{
- unsigned long addr = (unsigned long) vaddr;
-
- free_pages(addr, get_order(size));
-}
-
-EXPORT_SYMBOL(dma_free_noncoherent);
-
-void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle) __attribute__((alias("dma_free_noncoherent")));
-
-EXPORT_SYMBOL(dma_free_coherent);
-
-dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-
- return __pa(ptr);
-}
-
-EXPORT_SYMBOL(dma_map_single);
-
-void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_unmap_single);
-
-int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction direction)
-{
- int i;
-
- BUG_ON(direction == DMA_NONE);
-
- for (i = 0; i < nents; i++, sg++) {
- sg->dma_address = (dma_addr_t)page_to_phys(sg->page) + sg->offset;
- }
-
- return nents;
-}
-
-EXPORT_SYMBOL(dma_map_sg);
-
-dma_addr_t dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size, enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-
- return page_to_phys(page) + offset;
-}
-
-EXPORT_SYMBOL(dma_map_page);
-
-void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_unmap_page);
-
-void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_unmap_sg);
-
-void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
- size_t size, enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_single_for_cpu);
-
-void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
- size_t size, enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_single_for_device);
-
-void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
- unsigned long offset, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
-
-void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
- unsigned long offset, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_single_range_for_device);
-
-void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_sg_for_cpu);
-
-void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_sg_for_device);
-
-int dma_mapping_error(dma_addr_t dma_addr)
-{
- return 0;
-}
-
-EXPORT_SYMBOL(dma_mapping_error);
-
-int dma_supported(struct device *dev, u64 mask)
-{
- /*
- * we fall back to GFP_DMA when the mask isn't all 1s,
- * so we can't guarantee allocations that must be
- * within a tighter range than GFP_DMA..
- */
- if (mask < 0x00ffffff)
- return 0;
-
- return 1;
-}
-
-EXPORT_SYMBOL(dma_supported);
-
-int dma_is_consistent(struct device *dev, dma_addr_t dma_addr)
-{
- return 1;
-}
-
-EXPORT_SYMBOL(dma_is_consistent);
-
-void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_cache_sync);
-
-/* The DAC routines are a PCIism.. */
-
-#ifdef CONFIG_PCI
-
-#include <linux/pci.h>
-
-dma64_addr_t pci_dac_page_to_dma(struct pci_dev *pdev,
- struct page *page, unsigned long offset, int direction)
-{
- return (dma64_addr_t)page_to_phys(page) + offset;
-}
-
-EXPORT_SYMBOL(pci_dac_page_to_dma);
-
-struct page *pci_dac_dma_to_page(struct pci_dev *pdev,
- dma64_addr_t dma_addr)
-{
- return mem_map + (dma_addr >> PAGE_SHIFT);
-}
-
-EXPORT_SYMBOL(pci_dac_dma_to_page);
-
-unsigned long pci_dac_dma_to_offset(struct pci_dev *pdev,
- dma64_addr_t dma_addr)
-{
- return dma_addr & ~PAGE_MASK;
-}
-
-EXPORT_SYMBOL(pci_dac_dma_to_offset);
-
-void pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev,
- dma64_addr_t dma_addr, size_t len, int direction)
-{
- BUG_ON(direction == PCI_DMA_NONE);
-}
-
-EXPORT_SYMBOL(pci_dac_dma_sync_single_for_cpu);
-
-void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev,
- dma64_addr_t dma_addr, size_t len, int direction)
-{
- BUG_ON(direction == PCI_DMA_NONE);
-}
-
-EXPORT_SYMBOL(pci_dac_dma_sync_single_for_device);
-
-#endif /* CONFIG_PCI */
diff --git a/arch/mips/mm/dma-noncoherent.c b/arch/mips/mm/dma-default.c
index 8cecef0957c..4a32e939698 100644
--- a/arch/mips/mm/dma-noncoherent.c
+++ b/arch/mips/mm/dma-default.c
@@ -4,28 +4,39 @@
* for more details.
*
* Copyright (C) 2000 Ani Joshi <ajoshi@unixbox.com>
- * Copyright (C) 2000, 2001 Ralf Baechle <ralf@gnu.org>
+ * Copyright (C) 2000, 2001, 06 Ralf Baechle <ralf@linux-mips.org>
* swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
*/
+
#include <linux/types.h>
+#include <linux/dma-mapping.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/string.h>
-#include <linux/dma-mapping.h>
#include <asm/cache.h>
#include <asm/io.h>
+#include <dma-coherence.h>
+
/*
* Warning on the terminology - Linux calls an uncached area coherent;
* MIPS terminology calls memory areas with hardware maintained coherency
* coherent.
*/
+static inline int cpu_is_noncoherent_r10000(struct device *dev)
+{
+ return !plat_device_is_coherent(dev) &&
+ (current_cpu_data.cputype == CPU_R10000 &&
+ current_cpu_data.cputype == CPU_R12000);
+}
+
void *dma_alloc_noncoherent(struct device *dev, size_t size,
dma_addr_t * dma_handle, gfp_t gfp)
{
void *ret;
+
/* ignore region specifiers */
gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
@@ -35,7 +46,7 @@ void *dma_alloc_noncoherent(struct device *dev, size_t size,
if (ret != NULL) {
memset(ret, 0, size);
- *dma_handle = virt_to_phys(ret);
+ *dma_handle = plat_map_dma_mem(dev, ret, size);
}
return ret;
@@ -48,10 +59,21 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
{
void *ret;
- ret = dma_alloc_noncoherent(dev, size, dma_handle, gfp);
+ /* ignore region specifiers */
+ gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
+
+ if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
+ gfp |= GFP_DMA;
+ ret = (void *) __get_free_pages(gfp, get_order(size));
+
if (ret) {
- dma_cache_wback_inv((unsigned long) ret, size);
- ret = UNCAC_ADDR(ret);
+ memset(ret, 0, size);
+ *dma_handle = plat_map_dma_mem(dev, ret, size);
+
+ if (!plat_device_is_coherent(dev)) {
+ dma_cache_wback_inv((unsigned long) ret, size);
+ ret = UNCAC_ADDR(ret);
+ }
}
return ret;
@@ -72,7 +94,9 @@ void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
{
unsigned long addr = (unsigned long) vaddr;
- addr = CAC_ADDR(addr);
+ if (!plat_device_is_coherent(dev))
+ addr = CAC_ADDR(addr);
+
free_pages(addr, get_order(size));
}
@@ -104,9 +128,10 @@ dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
{
unsigned long addr = (unsigned long) ptr;
- __dma_sync(addr, size, direction);
+ if (!plat_device_is_coherent(dev))
+ __dma_sync(addr, size, direction);
- return virt_to_phys(ptr);
+ return plat_map_dma_mem(dev, ptr, size);
}
EXPORT_SYMBOL(dma_map_single);
@@ -114,10 +139,11 @@ EXPORT_SYMBOL(dma_map_single);
void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
enum dma_data_direction direction)
{
- unsigned long addr;
- addr = dma_addr + PAGE_OFFSET;
+ if (cpu_is_noncoherent_r10000(dev))
+ __dma_sync(plat_dma_addr_to_phys(dma_addr) + PAGE_OFFSET, size,
+ direction);
- //__dma_sync(addr, size, direction);
+ plat_unmap_dma_mem(dma_addr);
}
EXPORT_SYMBOL(dma_unmap_single);
@@ -133,11 +159,10 @@ int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
unsigned long addr;
addr = (unsigned long) page_address(sg->page);
- if (addr) {
+ if (!plat_device_is_coherent(dev) && addr)
__dma_sync(addr + sg->offset, sg->length, direction);
- sg->dma_address = (dma_addr_t)page_to_phys(sg->page)
- + sg->offset;
- }
+ sg->dma_address = plat_map_dma_mem_page(dev, sg->page) +
+ sg->offset;
}
return nents;
@@ -148,14 +173,16 @@ EXPORT_SYMBOL(dma_map_sg);
dma_addr_t dma_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size, enum dma_data_direction direction)
{
- unsigned long addr;
-
BUG_ON(direction == DMA_NONE);
- addr = (unsigned long) page_address(page) + offset;
- dma_cache_wback_inv(addr, size);
+ if (!plat_device_is_coherent(dev)) {
+ unsigned long addr;
+
+ addr = (unsigned long) page_address(page) + offset;
+ dma_cache_wback_inv(addr, size);
+ }
- return page_to_phys(page) + offset;
+ return plat_map_dma_mem_page(dev, page) + offset;
}
EXPORT_SYMBOL(dma_map_page);
@@ -165,12 +192,14 @@ void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
{
BUG_ON(direction == DMA_NONE);
- if (direction != DMA_TO_DEVICE) {
+ if (!plat_device_is_coherent(dev) && direction != DMA_TO_DEVICE) {
unsigned long addr;
- addr = dma_address + PAGE_OFFSET;
+ addr = plat_dma_addr_to_phys(dma_address);
dma_cache_wback_inv(addr, size);
}
+
+ plat_unmap_dma_mem(dma_address);
}
EXPORT_SYMBOL(dma_unmap_page);
@@ -183,13 +212,15 @@ void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
BUG_ON(direction == DMA_NONE);
- if (direction == DMA_TO_DEVICE)
- return;
-
for (i = 0; i < nhwentries; i++, sg++) {
- addr = (unsigned long) page_address(sg->page);
- if (addr)
- __dma_sync(addr + sg->offset, sg->length, direction);
+ if (!plat_device_is_coherent(dev) &&
+ direction != DMA_TO_DEVICE) {
+ addr = (unsigned long) page_address(sg->page);
+ if (addr)
+ __dma_sync(addr + sg->offset, sg->length,
+ direction);
+ }
+ plat_unmap_dma_mem(sg->dma_address);
}
}
@@ -198,12 +229,14 @@ EXPORT_SYMBOL(dma_unmap_sg);
void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
size_t size, enum dma_data_direction direction)
{
- unsigned long addr;
-
BUG_ON(direction == DMA_NONE);
- addr = dma_handle + PAGE_OFFSET;
- __dma_sync(addr, size, direction);
+ if (cpu_is_noncoherent_r10000(dev)) {
+ unsigned long addr;
+
+ addr = PAGE_OFFSET + plat_dma_addr_to_phys(dma_handle);
+ __dma_sync(addr, size, direction);
+ }
}
EXPORT_SYMBOL(dma_sync_single_for_cpu);
@@ -211,12 +244,14 @@ EXPORT_SYMBOL(dma_sync_single_for_cpu);
void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
size_t size, enum dma_data_direction direction)
{
- unsigned long addr;
-
BUG_ON(direction == DMA_NONE);
- addr = dma_handle + PAGE_OFFSET;
- __dma_sync(addr, size, direction);
+ if (cpu_is_noncoherent_r10000(dev)) {
+ unsigned long addr;
+
+ addr = plat_dma_addr_to_phys(dma_handle);
+ __dma_sync(addr, size, direction);
+ }
}
EXPORT_SYMBOL(dma_sync_single_for_device);
@@ -224,12 +259,14 @@ EXPORT_SYMBOL(dma_sync_single_for_device);
void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
unsigned long offset, size_t size, enum dma_data_direction direction)
{
- unsigned long addr;
-
BUG_ON(direction == DMA_NONE);
- addr = dma_handle + offset + PAGE_OFFSET;
- __dma_sync(addr, size, direction);
+ if (cpu_is_noncoherent_r10000(dev)) {
+ unsigned long addr;
+
+ addr = PAGE_OFFSET + plat_dma_addr_to_phys(dma_handle);
+ __dma_sync(addr + offset, size, direction);
+ }
}
EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
@@ -237,12 +274,14 @@ EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
unsigned long offset, size_t size, enum dma_data_direction direction)
{
- unsigned long addr;
-
BUG_ON(direction == DMA_NONE);
- addr = dma_handle + offset + PAGE_OFFSET;
- __dma_sync(addr, size, direction);
+ if (cpu_is_noncoherent_r10000(dev)) {
+ unsigned long addr;
+
+ addr = PAGE_OFFSET + plat_dma_addr_to_phys(dma_handle);
+ __dma_sync(addr + offset, size, direction);
+ }
}
EXPORT_SYMBOL(dma_sync_single_range_for_device);
@@ -255,9 +294,12 @@ void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
BUG_ON(direction == DMA_NONE);
/* Make sure that gcc doesn't leave the empty loop body. */
- for (i = 0; i < nelems; i++, sg++)
- __dma_sync((unsigned long)page_address(sg->page),
- sg->length, direction);
+ for (i = 0; i < nelems; i++, sg++) {
+ if (!plat_device_is_coherent(dev))
+ __dma_sync((unsigned long)page_address(sg->page),
+ sg->length, direction);
+ plat_unmap_dma_mem(sg->dma_address);
+ }
}
EXPORT_SYMBOL(dma_sync_sg_for_cpu);
@@ -270,9 +312,12 @@ void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nele
BUG_ON(direction == DMA_NONE);
/* Make sure that gcc doesn't leave the empty loop body. */
- for (i = 0; i < nelems; i++, sg++)
- __dma_sync((unsigned long)page_address(sg->page),
- sg->length, direction);
+ for (i = 0; i < nelems; i++, sg++) {
+ if (!plat_device_is_coherent(dev))
+ __dma_sync((unsigned long)page_address(sg->page),
+ sg->length, direction);
+ plat_unmap_dma_mem(sg->dma_address);
+ }
}
EXPORT_SYMBOL(dma_sync_sg_for_device);
@@ -301,70 +346,18 @@ EXPORT_SYMBOL(dma_supported);
int dma_is_consistent(struct device *dev, dma_addr_t dma_addr)
{
- return 1;
+ return plat_device_is_coherent(dev);
}
EXPORT_SYMBOL(dma_is_consistent);
void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
- enum dma_data_direction direction)
+ enum dma_data_direction direction)
{
- if (direction == DMA_NONE)
- return;
+ BUG_ON(direction == DMA_NONE);
- dma_cache_wback_inv((unsigned long)vaddr, size);
+ if (!plat_device_is_coherent(dev))
+ dma_cache_wback_inv((unsigned long)vaddr, size);
}
EXPORT_SYMBOL(dma_cache_sync);
-
-/* The DAC routines are a PCIism.. */
-
-#ifdef CONFIG_PCI
-
-#include <linux/pci.h>
-
-dma64_addr_t pci_dac_page_to_dma(struct pci_dev *pdev,
- struct page *page, unsigned long offset, int direction)
-{
- return (dma64_addr_t)page_to_phys(page) + offset;
-}
-
-EXPORT_SYMBOL(pci_dac_page_to_dma);
-
-struct page *pci_dac_dma_to_page(struct pci_dev *pdev,
- dma64_addr_t dma_addr)
-{
- return mem_map + (dma_addr >> PAGE_SHIFT);
-}
-
-EXPORT_SYMBOL(pci_dac_dma_to_page);
-
-unsigned long pci_dac_dma_to_offset(struct pci_dev *pdev,
- dma64_addr_t dma_addr)
-{
- return dma_addr & ~PAGE_MASK;
-}
-
-EXPORT_SYMBOL(pci_dac_dma_to_offset);
-
-void pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev,
- dma64_addr_t dma_addr, size_t len, int direction)
-{
- BUG_ON(direction == PCI_DMA_NONE);
-
- dma_cache_wback_inv(dma_addr + PAGE_OFFSET, len);
-}
-
-EXPORT_SYMBOL(pci_dac_dma_sync_single_for_cpu);
-
-void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev,
- dma64_addr_t dma_addr, size_t len, int direction)
-{
- BUG_ON(direction == PCI_DMA_NONE);
-
- dma_cache_wback_inv(dma_addr + PAGE_OFFSET, len);
-}
-
-EXPORT_SYMBOL(pci_dac_dma_sync_single_for_device);
-
-#endif /* CONFIG_PCI */
diff --git a/arch/mips/mm/dma-ip27.c b/arch/mips/mm/dma-ip27.c
deleted file mode 100644
index f088344db46..00000000000
--- a/arch/mips/mm/dma-ip27.c
+++ /dev/null
@@ -1,257 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2000 Ani Joshi <ajoshi@unixbox.com>
- * Copyright (C) 2000, 2001 Ralf Baechle <ralf@gnu.org>
- * swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
- */
-#include <linux/types.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/pci.h>
-
-#include <asm/cache.h>
-#include <asm/pci/bridge.h>
-
-#define pdev_to_baddr(pdev, addr) \
- (BRIDGE_CONTROLLER(pdev->bus)->baddr + (addr))
-#define dev_to_baddr(dev, addr) \
- pdev_to_baddr(to_pci_dev(dev), (addr))
-
-void *dma_alloc_noncoherent(struct device *dev, size_t size,
- dma_addr_t * dma_handle, gfp_t gfp)
-{
- void *ret;
-
- /* ignore region specifiers */
- gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
-
- if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
- gfp |= GFP_DMA;
- ret = (void *) __get_free_pages(gfp, get_order(size));
-
- if (ret != NULL) {
- memset(ret, 0, size);
- *dma_handle = dev_to_baddr(dev, virt_to_phys(ret));
- }
-
- return ret;
-}
-
-EXPORT_SYMBOL(dma_alloc_noncoherent);
-
-void *dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t * dma_handle, gfp_t gfp)
- __attribute__((alias("dma_alloc_noncoherent")));
-
-EXPORT_SYMBOL(dma_alloc_coherent);
-
-void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle)
-{
- unsigned long addr = (unsigned long) vaddr;
-
- free_pages(addr, get_order(size));
-}
-
-EXPORT_SYMBOL(dma_free_noncoherent);
-
-void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle) __attribute__((alias("dma_free_noncoherent")));
-
-EXPORT_SYMBOL(dma_free_coherent);
-
-dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-
- return dev_to_baddr(dev, __pa(ptr));
-}
-
-EXPORT_SYMBOL(dma_map_single);
-
-void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_unmap_single);
-
-int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction direction)
-{
- int i;
-
- BUG_ON(direction == DMA_NONE);
-
- for (i = 0; i < nents; i++, sg++) {
- sg->dma_address = (dma_addr_t) dev_to_baddr(dev,
- page_to_phys(sg->page) + sg->offset);
- }
-
- return nents;
-}
-
-EXPORT_SYMBOL(dma_map_sg);
-
-dma_addr_t dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size, enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-
- return dev_to_baddr(dev, page_to_phys(page) + offset);
-}
-
-EXPORT_SYMBOL(dma_map_page);
-
-void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_unmap_page);
-
-void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_unmap_sg);
-
-void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_single_for_cpu);
-
-void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_single_for_device);
-
-void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
- unsigned long offset, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
-
-void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
- unsigned long offset, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_single_range_for_device);
-
-void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_sg_for_cpu);
-
-void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_sg_for_device);
-
-int dma_mapping_error(dma_addr_t dma_addr)
-{
- return 0;
-}
-
-EXPORT_SYMBOL(dma_mapping_error);
-
-int dma_supported(struct device *dev, u64 mask)
-{
- /*
- * we fall back to GFP_DMA when the mask isn't all 1s,
- * so we can't guarantee allocations that must be
- * within a tighter range than GFP_DMA..
- */
- if (mask < 0x00ffffff)
- return 0;
-
- return 1;
-}
-
-EXPORT_SYMBOL(dma_supported);
-
-int dma_is_consistent(struct device *dev, dma_addr_t dma_addr)
-{
- return 1;
-}
-
-EXPORT_SYMBOL(dma_is_consistent);
-
-void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_cache_sync);
-
-dma64_addr_t pci_dac_page_to_dma(struct pci_dev *pdev,
- struct page *page, unsigned long offset, int direction)
-{
- dma64_addr_t addr = page_to_phys(page) + offset;
-
- return (dma64_addr_t) pdev_to_baddr(pdev, addr);
-}
-
-EXPORT_SYMBOL(pci_dac_page_to_dma);
-
-struct page *pci_dac_dma_to_page(struct pci_dev *pdev,
- dma64_addr_t dma_addr)
-{
- struct bridge_controller *bc = BRIDGE_CONTROLLER(pdev->bus);
-
- return pfn_to_page((dma_addr - bc->baddr) >> PAGE_SHIFT);
-}
-
-EXPORT_SYMBOL(pci_dac_dma_to_page);
-
-unsigned long pci_dac_dma_to_offset(struct pci_dev *pdev,
- dma64_addr_t dma_addr)
-{
- return dma_addr & ~PAGE_MASK;
-}
-
-EXPORT_SYMBOL(pci_dac_dma_to_offset);
-
-void pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev,
- dma64_addr_t dma_addr, size_t len, int direction)
-{
- BUG_ON(direction == PCI_DMA_NONE);
-}
-
-EXPORT_SYMBOL(pci_dac_dma_sync_single_for_cpu);
-
-void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev,
- dma64_addr_t dma_addr, size_t len, int direction)
-{
- BUG_ON(direction == PCI_DMA_NONE);
-}
-
-EXPORT_SYMBOL(pci_dac_dma_sync_single_for_device);
diff --git a/arch/mips/mm/dma-ip32.c b/arch/mips/mm/dma-ip32.c
deleted file mode 100644
index b42b6f7456e..00000000000
--- a/arch/mips/mm/dma-ip32.c
+++ /dev/null
@@ -1,383 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2000 Ani Joshi <ajoshi@unixbox.com>
- * Copyright (C) 2000, 2001 Ralf Baechle <ralf@gnu.org>
- * Copyright (C) 2005 Ilya A. Volynets-Evenbakh <ilya@total-knowledge.com>
- * swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
- * IP32 changes by Ilya.
- */
-#include <linux/types.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/dma-mapping.h>
-
-#include <asm/cache.h>
-#include <asm/io.h>
-#include <asm/ip32/crime.h>
-
-/*
- * Warning on the terminology - Linux calls an uncached area coherent;
- * MIPS terminology calls memory areas with hardware maintained coherency
- * coherent.
- */
-
-/*
- * Few notes.
- * 1. CPU sees memory as two chunks: 0-256M@0x0, and the rest @0x40000000+256M
- * 2. PCI sees memory as one big chunk @0x0 (or we could use 0x40000000 for native-endian)
- * 3. All other devices see memory as one big chunk at 0x40000000
- * 4. Non-PCI devices will pass NULL as struct device*
- * Thus we translate differently, depending on device.
- */
-
-#define RAM_OFFSET_MASK 0x3fffffff
-
-void *dma_alloc_noncoherent(struct device *dev, size_t size,
- dma_addr_t * dma_handle, gfp_t gfp)
-{
- void *ret;
- /* ignore region specifiers */
- gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
-
- if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
- gfp |= GFP_DMA;
- ret = (void *) __get_free_pages(gfp, get_order(size));
-
- if (ret != NULL) {
- unsigned long addr = virt_to_phys(ret)&RAM_OFFSET_MASK;
- memset(ret, 0, size);
- if(dev==NULL)
- addr+= CRIME_HI_MEM_BASE;
- *dma_handle = addr;
- }
-
- return ret;
-}
-
-EXPORT_SYMBOL(dma_alloc_noncoherent);
-
-void *dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t * dma_handle, gfp_t gfp)
-{
- void *ret;
-
- ret = dma_alloc_noncoherent(dev, size, dma_handle, gfp);
- if (ret) {
- dma_cache_wback_inv((unsigned long) ret, size);
- ret = UNCAC_ADDR(ret);
- }
-
- return ret;
-}
-
-EXPORT_SYMBOL(dma_alloc_coherent);
-
-void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle)
-{
- free_pages((unsigned long) vaddr, get_order(size));
-}
-
-EXPORT_SYMBOL(dma_free_noncoherent);
-
-void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle)
-{
- unsigned long addr = (unsigned long) vaddr;
-
- addr = CAC_ADDR(addr);
- free_pages(addr, get_order(size));
-}
-
-EXPORT_SYMBOL(dma_free_coherent);
-
-static inline void __dma_sync(unsigned long addr, size_t size,
- enum dma_data_direction direction)
-{
- switch (direction) {
- case DMA_TO_DEVICE:
- dma_cache_wback(addr, size);
- break;
-
- case DMA_FROM_DEVICE:
- dma_cache_inv(addr, size);
- break;
-
- case DMA_BIDIRECTIONAL:
- dma_cache_wback_inv(addr, size);
- break;
-
- default:
- BUG();
- }
-}
-
-dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
- enum dma_data_direction direction)
-{
- unsigned long addr = (unsigned long) ptr;
-
- switch (direction) {
- case DMA_TO_DEVICE:
- dma_cache_wback(addr, size);
- break;
-
- case DMA_FROM_DEVICE:
- dma_cache_inv(addr, size);
- break;
-
- case DMA_BIDIRECTIONAL:
- dma_cache_wback_inv(addr, size);
- break;
-
- default:
- BUG();
- }
-
- addr = virt_to_phys(ptr)&RAM_OFFSET_MASK;
- if(dev == NULL)
- addr+=CRIME_HI_MEM_BASE;
- return (dma_addr_t)addr;
-}
-
-EXPORT_SYMBOL(dma_map_single);
-
-void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
- enum dma_data_direction direction)
-{
- switch (direction) {
- case DMA_TO_DEVICE:
- break;
-
- case DMA_FROM_DEVICE:
- break;
-
- case DMA_BIDIRECTIONAL:
- break;
-
- default:
- BUG();
- }
-}
-
-EXPORT_SYMBOL(dma_unmap_single);
-
-int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction direction)
-{
- int i;
-
- BUG_ON(direction == DMA_NONE);
-
- for (i = 0; i < nents; i++, sg++) {
- unsigned long addr;
-
- addr = (unsigned long) page_address(sg->page)+sg->offset;
- if (addr)
- __dma_sync(addr, sg->length, direction);
- addr = __pa(addr)&RAM_OFFSET_MASK;
- if(dev == NULL)
- addr += CRIME_HI_MEM_BASE;
- sg->dma_address = (dma_addr_t)addr;
- }
-
- return nents;
-}
-
-EXPORT_SYMBOL(dma_map_sg);
-
-dma_addr_t dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size, enum dma_data_direction direction)
-{
- unsigned long addr;
-
- BUG_ON(direction == DMA_NONE);
-
- addr = (unsigned long) page_address(page) + offset;
- dma_cache_wback_inv(addr, size);
- addr = __pa(addr)&RAM_OFFSET_MASK;
- if(dev == NULL)
- addr += CRIME_HI_MEM_BASE;
-
- return (dma_addr_t)addr;
-}
-
-EXPORT_SYMBOL(dma_map_page);
-
-void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
- enum dma_data_direction direction)
-{
- BUG_ON(direction == DMA_NONE);
-
- if (direction != DMA_TO_DEVICE) {
- unsigned long addr;
-
- dma_address&=RAM_OFFSET_MASK;
- addr = dma_address + PAGE_OFFSET;
- if(dma_address>=256*1024*1024)
- addr+=CRIME_HI_MEM_BASE;
- dma_cache_wback_inv(addr, size);
- }
-}
-
-EXPORT_SYMBOL(dma_unmap_page);
-
-void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
- enum dma_data_direction direction)
-{
- unsigned long addr;
- int i;
-
- BUG_ON(direction == DMA_NONE);
-
- if (direction == DMA_TO_DEVICE)
- return;
-
- for (i = 0; i < nhwentries; i++, sg++) {
- addr = (unsigned long) page_address(sg->page);
- if (!addr)
- continue;
- dma_cache_wback_inv(addr + sg->offset, sg->length);
- }
-}
-
-EXPORT_SYMBOL(dma_unmap_sg);
-
-void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
- size_t size, enum dma_data_direction direction)
-{
- unsigned long addr;
-
- BUG_ON(direction == DMA_NONE);
-
- dma_handle&=RAM_OFFSET_MASK;
- addr = dma_handle + PAGE_OFFSET;
- if(dma_handle>=256*1024*1024)
- addr+=CRIME_HI_MEM_BASE;
- __dma_sync(addr, size, direction);
-}
-
-EXPORT_SYMBOL(dma_sync_single_for_cpu);
-
-void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
- size_t size, enum dma_data_direction direction)
-{
- unsigned long addr;
-
- BUG_ON(direction == DMA_NONE);
-
- dma_handle&=RAM_OFFSET_MASK;
- addr = dma_handle + PAGE_OFFSET;
- if(dma_handle>=256*1024*1024)
- addr+=CRIME_HI_MEM_BASE;
- __dma_sync(addr, size, direction);
-}
-
-EXPORT_SYMBOL(dma_sync_single_for_device);
-
-void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
- unsigned long offset, size_t size, enum dma_data_direction direction)
-{
- unsigned long addr;
-
- BUG_ON(direction == DMA_NONE);
-
- dma_handle&=RAM_OFFSET_MASK;
- addr = dma_handle + offset + PAGE_OFFSET;
- if(dma_handle>=256*1024*1024)
- addr+=CRIME_HI_MEM_BASE;
- __dma_sync(addr, size, direction);
-}
-
-EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
-
-void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
- unsigned long offset, size_t size, enum dma_data_direction direction)
-{
- unsigned long addr;
-
- BUG_ON(direction == DMA_NONE);
-
- dma_handle&=RAM_OFFSET_MASK;
- addr = dma_handle + offset + PAGE_OFFSET;
- if(dma_handle>=256*1024*1024)
- addr+=CRIME_HI_MEM_BASE;
- __dma_sync(addr, size, direction);
-}
-
-EXPORT_SYMBOL(dma_sync_single_range_for_device);
-
-void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
- enum dma_data_direction direction)
-{
- int i;
-
- BUG_ON(direction == DMA_NONE);
-
- /* Make sure that gcc doesn't leave the empty loop body. */
- for (i = 0; i < nelems; i++, sg++)
- __dma_sync((unsigned long)page_address(sg->page),
- sg->length, direction);
-}
-
-EXPORT_SYMBOL(dma_sync_sg_for_cpu);
-
-void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
- enum dma_data_direction direction)
-{
- int i;
-
- BUG_ON(direction == DMA_NONE);
-
- /* Make sure that gcc doesn't leave the empty loop body. */
- for (i = 0; i < nelems; i++, sg++)
- __dma_sync((unsigned long)page_address(sg->page),
- sg->length, direction);
-}
-
-EXPORT_SYMBOL(dma_sync_sg_for_device);
-
-int dma_mapping_error(dma_addr_t dma_addr)
-{
- return 0;
-}
-
-EXPORT_SYMBOL(dma_mapping_error);
-
-int dma_supported(struct device *dev, u64 mask)
-{
- /*
- * we fall back to GFP_DMA when the mask isn't all 1s,
- * so we can't guarantee allocations that must be
- * within a tighter range than GFP_DMA..
- */
- if (mask < 0x00ffffff)
- return 0;
-
- return 1;
-}
-
-EXPORT_SYMBOL(dma_supported);
-
-int dma_is_consistent(struct device *dev, dma_addr_t dma_addr)
-{
- return 1;
-}
-
-EXPORT_SYMBOL(dma_is_consistent);
-
-void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
- enum dma_data_direction direction)
-{
- if (direction == DMA_NONE)
- return;
-
- dma_cache_wback_inv((unsigned long)vaddr, size);
-}
-
-EXPORT_SYMBOL(dma_cache_sync);
-
diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile
index 82b20c28bef..bf85995ca04 100644
--- a/arch/mips/pci/Makefile
+++ b/arch/mips/pci/Makefile
@@ -2,7 +2,7 @@
# Makefile for the PCI specific kernel interface routines under Linux.
#
-obj-y += pci.o
+obj-y += pci.o pci-dac.o
#
# PCI bus host bridge specific code
diff --git a/arch/mips/pci/pci-dac.c b/arch/mips/pci/pci-dac.c
new file mode 100644
index 00000000000..0f0ea1b7d4d
--- /dev/null
+++ b/arch/mips/pci/pci-dac.c
@@ -0,0 +1,79 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2000 Ani Joshi <ajoshi@unixbox.com>
+ * Copyright (C) 2000, 2001, 06 Ralf Baechle <ralf@linux-mips.org>
+ * swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
+ */
+
+#include <linux/types.h>
+#include <linux/dma-mapping.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/string.h>
+
+#include <asm/cache.h>
+#include <asm/io.h>
+
+#include <dma-coherence.h>
+
+#include <linux/pci.h>
+
+dma64_addr_t pci_dac_page_to_dma(struct pci_dev *pdev,
+ struct page *page, unsigned long offset, int direction)
+{
+ struct device *dev = &pdev->dev;
+
+ BUG_ON(direction == DMA_NONE);
+
+ if (!plat_device_is_coherent(dev)) {
+ unsigned long addr;
+
+ addr = (unsigned long) page_address(page) + offset;
+ dma_cache_wback_inv(addr, PAGE_SIZE);
+ }
+
+ return plat_map_dma_mem_page(dev, page) + offset;
+}
+
+EXPORT_SYMBOL(pci_dac_page_to_dma);
+
+struct page *pci_dac_dma_to_page(struct pci_dev *pdev,
+ dma64_addr_t dma_addr)
+{
+ return pfn_to_page(plat_dma_addr_to_phys(dma_addr) >> PAGE_SHIFT);
+}
+
+EXPORT_SYMBOL(pci_dac_dma_to_page);
+
+unsigned long pci_dac_dma_to_offset(struct pci_dev *pdev,
+ dma64_addr_t dma_addr)
+{
+ return dma_addr & ~PAGE_MASK;
+}
+
+EXPORT_SYMBOL(pci_dac_dma_to_offset);
+
+void pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev,
+ dma64_addr_t dma_addr, size_t len, int direction)
+{
+ BUG_ON(direction == PCI_DMA_NONE);
+
+ if (!plat_device_is_coherent(&pdev->dev))
+ dma_cache_wback_inv(dma_addr + PAGE_OFFSET, len);
+}
+
+EXPORT_SYMBOL(pci_dac_dma_sync_single_for_cpu);
+
+void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev,
+ dma64_addr_t dma_addr, size_t len, int direction)
+{
+ BUG_ON(direction == PCI_DMA_NONE);
+
+ if (!plat_device_is_coherent(&pdev->dev))
+ dma_cache_wback_inv(dma_addr + PAGE_OFFSET, len);
+}
+
+EXPORT_SYMBOL(pci_dac_dma_sync_single_for_device);
diff --git a/include/asm-mips/atomic.h b/include/asm-mips/atomic.h
index c1a2409bb52..8578869a8bc 100644
--- a/include/asm-mips/atomic.h
+++ b/include/asm-mips/atomic.h
@@ -69,7 +69,10 @@ static __inline__ void atomic_add(int i, atomic_t * v)
"1: ll %0, %1 # atomic_add \n"
" addu %0, %2 \n"
" sc %0, %1 \n"
- " beqz %0, 1b \n"
+ " beqz %0, 2f \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter));
@@ -111,7 +114,10 @@ static __inline__ void atomic_sub(int i, atomic_t * v)
"1: ll %0, %1 # atomic_sub \n"
" subu %0, %2 \n"
" sc %0, %1 \n"
- " beqz %0, 1b \n"
+ " beqz %0, 2f \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter));
@@ -155,8 +161,11 @@ static __inline__ int atomic_add_return(int i, atomic_t * v)
"1: ll %1, %2 # atomic_add_return \n"
" addu %0, %1, %3 \n"
" sc %0, %2 \n"
- " beqz %0, 1b \n"
+ " beqz %0, 2f \n"
" addu %0, %1, %3 \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
@@ -204,8 +213,11 @@ static __inline__ int atomic_sub_return(int i, atomic_t * v)
"1: ll %1, %2 # atomic_sub_return \n"
" subu %0, %1, %3 \n"
" sc %0, %2 \n"
- " beqz %0, 1b \n"
+ " beqz %0, 2f \n"
" subu %0, %1, %3 \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
@@ -267,10 +279,13 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v)
" bltz %0, 1f \n"
" sc %0, %2 \n"
" .set noreorder \n"
- " beqz %0, 1b \n"
+ " beqz %0, 2f \n"
" subu %0, %1, %3 \n"
" .set reorder \n"
"1: \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
@@ -429,7 +444,10 @@ static __inline__ void atomic64_add(long i, atomic64_t * v)
"1: lld %0, %1 # atomic64_add \n"
" addu %0, %2 \n"
" scd %0, %1 \n"
- " beqz %0, 1b \n"
+ " beqz %0, 2f \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter));
@@ -471,7 +489,10 @@ static __inline__ void atomic64_sub(long i, atomic64_t * v)
"1: lld %0, %1 # atomic64_sub \n"
" subu %0, %2 \n"
" scd %0, %1 \n"
- " beqz %0, 1b \n"
+ " beqz %0, 2f \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter));
@@ -515,8 +536,11 @@ static __inline__ long atomic64_add_return(long i, atomic64_t * v)
"1: lld %1, %2 # atomic64_add_return \n"
" addu %0, %1, %3 \n"
" scd %0, %2 \n"
- " beqz %0, 1b \n"
+ " beqz %0, 2f \n"
" addu %0, %1, %3 \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
@@ -564,8 +588,11 @@ static __inline__ long atomic64_sub_return(long i, atomic64_t * v)
"1: lld %1, %2 # atomic64_sub_return \n"
" subu %0, %1, %3 \n"
" scd %0, %2 \n"
- " beqz %0, 1b \n"
+ " beqz %0, 2f \n"
" subu %0, %1, %3 \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
@@ -627,10 +654,13 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v)
" bltz %0, 1f \n"
" scd %0, %2 \n"
" .set noreorder \n"
- " beqz %0, 1b \n"
+ " beqz %0, 2f \n"
" dsubu %0, %1, %3 \n"
" .set reorder \n"
"1: \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
" .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter)
diff --git a/include/asm-mips/bitops.h b/include/asm-mips/bitops.h
index 06445de1324..06c08228a52 100644
--- a/include/asm-mips/bitops.h
+++ b/include/asm-mips/bitops.h
@@ -68,7 +68,10 @@ static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
"1: " __LL "%0, %1 # set_bit \n"
" or %0, %2 \n"
" " __SC "%0, %1 \n"
- " beqz %0, 1b \n"
+ " beqz %0, 2f \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (*m)
: "ir" (1UL << (nr & SZLONG_MASK)), "m" (*m));
@@ -116,7 +119,10 @@ static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
"1: " __LL "%0, %1 # clear_bit \n"
" and %0, %2 \n"
" " __SC "%0, %1 \n"
- " beqz %0, 1b \n"
+ " beqz %0, 2f \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (*m)
: "ir" (~(1UL << (nr & SZLONG_MASK))), "m" (*m));
@@ -166,7 +172,10 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
"1: " __LL "%0, %1 # change_bit \n"
" xor %0, %2 \n"
" " __SC "%0, %1 \n"
- " beqz %0, 1b \n"
+ " beqz %0, 2f \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (*m)
: "ir" (1UL << (nr & SZLONG_MASK)), "m" (*m));
@@ -222,8 +231,12 @@ static inline int test_and_set_bit(unsigned long nr,
"1: " __LL "%0, %1 # test_and_set_bit \n"
" or %2, %0, %3 \n"
" " __SC "%2, %1 \n"
- " beqz %2, 1b \n"
+ " beqz %2, 2f \n"
" and %2, %0, %3 \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " nop \n"
+ " .previous \n"
" .set pop \n"
: "=&r" (temp), "=m" (*m), "=&r" (res)
: "r" (1UL << (nr & SZLONG_MASK)), "m" (*m)
@@ -290,8 +303,12 @@ static inline int test_and_clear_bit(unsigned long nr,
" or %2, %0, %3 \n"
" xor %2, %3 \n"
" " __SC "%2, %1 \n"
- " beqz %2, 1b \n"
+ " beqz %2, 2f \n"
" and %2, %0, %3 \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " nop \n"
+ " .previous \n"
" .set pop \n"
: "=&r" (temp), "=m" (*m), "=&r" (res)
: "r" (1UL << (nr & SZLONG_MASK)), "m" (*m)
@@ -356,8 +373,12 @@ static inline int test_and_change_bit(unsigned long nr,
"1: " __LL "%0, %1 # test_and_change_bit \n"
" xor %2, %0, %3 \n"
" " __SC "\t%2, %1 \n"
- " beqz %2, 1b \n"
+ " beqz %2, 2f \n"
" and %2, %0, %3 \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " nop \n"
+ " .previous \n"
" .set pop \n"
: "=&r" (temp), "=m" (*m), "=&r" (res)
: "r" (1UL << (nr & SZLONG_MASK)), "m" (*m)
diff --git a/include/asm-mips/compat-signal.h b/include/asm-mips/compat-signal.h
new file mode 100644
index 00000000000..672077084aa
--- /dev/null
+++ b/include/asm-mips/compat-signal.h
@@ -0,0 +1,55 @@
+#ifndef __ASM_COMPAT_SIGNAL_H
+#define __ASM_COMPAT_SIGNAL_H
+
+#include <linux/bug.h>
+#include <linux/compat.h>
+#include <linux/compiler.h>
+
+static inline int __copy_conv_sigset_to_user(compat_sigset_t __user *d,
+ const sigset_t *s)
+{
+ int err;
+
+ BUG_ON(sizeof(*d) != sizeof(*s));
+ BUG_ON(_NSIG_WORDS != 2);
+
+ err = __put_user(s->sig[0], &d->sig[0]);
+ err |= __put_user(s->sig[0] >> 32, &d->sig[1]);
+ err |= __put_user(s->sig[1], &d->sig[2]);
+ err |= __put_user(s->sig[1] >> 32, &d->sig[3]);
+
+ return err;
+}
+
+static inline int __copy_conv_sigset_from_user(sigset_t *d,
+ const compat_sigset_t __user *s)
+{
+ int err;
+ union sigset_u {
+ sigset_t s;
+ compat_sigset_t c;
+ } *u = (union sigset_u *) d;
+
+ BUG_ON(sizeof(*d) != sizeof(*s));
+ BUG_ON(_NSIG_WORDS != 2);
+
+ if (unlikely(!access_ok(VERIFY_READ, d, sizeof(*d))))
+ return -EFAULT;
+
+#ifdef CONFIG_CPU_BIG_ENDIAN
+ err = __get_user(u->c.sig[1], &s->sig[0]);
+ err |= __get_user(u->c.sig[0], &s->sig[1]);
+ err |= __get_user(u->c.sig[3], &s->sig[2]);
+ err |= __get_user(u->c.sig[2], &s->sig[3]);
+#endif
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+ err = __get_user(u->c.sig[0], &s->sig[0]);
+ err |= __get_user(u->c.sig[1], &s->sig[1]);
+ err |= __get_user(u->c.sig[2], &s->sig[2]);
+ err |= __get_user(u->c.sig[3], &s->sig[3]);
+#endif
+
+ return err;
+}
+
+#endif /* __ASM_COMPAT_SIGNAL_H */
diff --git a/include/asm-mips/dma-mapping.h b/include/asm-mips/dma-mapping.h
index 236d1a467cc..230b3f1b69b 100644
--- a/include/asm-mips/dma-mapping.h
+++ b/include/asm-mips/dma-mapping.h
@@ -68,6 +68,7 @@ extern int dma_is_consistent(struct device *dev, dma_addr_t dma_addr);
extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction);
+#if 0
#define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
extern int dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
@@ -75,5 +76,6 @@ extern int dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
extern void dma_release_declared_memory(struct device *dev);
extern void * dma_mark_declared_memory_occupied(struct device *dev,
dma_addr_t device_addr, size_t size);
+#endif
#endif /* _ASM_DMA_MAPPING_H */
diff --git a/include/asm-mips/mach-generic/dma-coherence.h b/include/asm-mips/mach-generic/dma-coherence.h
new file mode 100644
index 00000000000..df71822fd27
--- /dev/null
+++ b/include/asm-mips/mach-generic/dma-coherence.h
@@ -0,0 +1,43 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org>
+ *
+ */
+#ifndef __ASM_MACH_GENERIC_DMA_COHERENCE_H
+#define __ASM_MACH_GENERIC_DMA_COHERENCE_H
+
+struct device;
+
+static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
+{
+ return virt_to_phys(addr);
+}
+
+static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
+{
+ return page_to_phys(page);
+}
+
+static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
+{
+ return dma_addr;
+}
+
+static void plat_unmap_dma_mem(dma_addr_t dma_addr)
+{
+}
+
+static inline int plat_device_is_coherent(struct device *dev)
+{
+#ifdef CONFIG_DMA_COHERENT
+ return 1;
+#endif
+#ifdef CONFIG_DMA_NONCOHERENT
+ return 0;
+#endif
+}
+
+#endif /* __ASM_MACH_GENERIC_DMA_COHERENCE_H */
diff --git a/include/asm-mips/mach-generic/kmalloc.h b/include/asm-mips/mach-generic/kmalloc.h
index 410ab5f6c56..b8e6deba352 100644
--- a/include/asm-mips/mach-generic/kmalloc.h
+++ b/include/asm-mips/mach-generic/kmalloc.h
@@ -5,6 +5,7 @@
#ifndef CONFIG_DMA_COHERENT
/*
* Total overkill for most systems but need as a safe default.
+ * Set this one if any device in the system might do non-coherent DMA.
*/
#define ARCH_KMALLOC_MINALIGN 128
#endif
diff --git a/include/asm-mips/mach-ip27/dma-coherence.h b/include/asm-mips/mach-ip27/dma-coherence.h
new file mode 100644
index 00000000000..659816e200d
--- /dev/null
+++ b/include/asm-mips/mach-ip27/dma-coherence.h
@@ -0,0 +1,49 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org>
+ *
+ */
+#ifndef __ASM_MACH_IP27_DMA_COHERENCE_H
+#define __ASM_MACH_IP27_DMA_COHERENCE_H
+
+#include <asm/pci/bridge.h>
+
+#define pdev_to_baddr(pdev, addr) \
+ (BRIDGE_CONTROLLER(pdev->bus)->baddr + (addr))
+#define dev_to_baddr(dev, addr) \
+ pdev_to_baddr(to_pci_dev(dev), (addr))
+
+struct device;
+
+static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
+{
+ dma_addr_t pa = dev_to_baddr(dev, virt_to_phys(addr));
+
+ return pa;
+}
+
+static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
+{
+ dma_addr_t pa = dev_to_baddr(dev, page_to_phys(page));
+
+ return pa;
+}
+
+static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
+{
+ return dma_addr & (0xffUL << 56);
+}
+
+static void plat_unmap_dma_mem(dma_addr_t dma_addr)
+{
+}
+
+static inline int plat_device_is_coherent(struct device *dev)
+{
+ return 1; /* IP27 non-cohernet mode is unsupported */
+}
+
+#endif /* __ASM_MACH_IP27_DMA_COHERENCE_H */
diff --git a/include/asm-mips/mach-ip32/dma-coherence.h b/include/asm-mips/mach-ip32/dma-coherence.h
new file mode 100644
index 00000000000..950be17bbb8
--- /dev/null
+++ b/include/asm-mips/mach-ip32/dma-coherence.h
@@ -0,0 +1,71 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org>
+ *
+ */
+#ifndef __ASM_MACH_IP35_DMA_COHERENCE_H
+#define __ASM_MACH_IP35_DMA_COHERENCE_H
+
+#include <asm/ip32/crime.h>
+
+struct device;
+
+/*
+ * Few notes.
+ * 1. CPU sees memory as two chunks: 0-256M@0x0, and the rest @0x40000000+256M
+ * 2. PCI sees memory as one big chunk @0x0 (or we could use 0x40000000 for
+ * native-endian)
+ * 3. All other devices see memory as one big chunk at 0x40000000
+ * 4. Non-PCI devices will pass NULL as struct device*
+ *
+ * Thus we translate differently, depending on device.
+ */
+
+#define RAM_OFFSET_MASK 0x3fffffffUL
+
+static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
+{
+ dma_addr_t pa = virt_to_phys(addr) & RAM_OFFSET_MASK;
+
+ if (dev == NULL)
+ pa += CRIME_HI_MEM_BASE;
+
+ return pa;
+}
+
+static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
+{
+ dma_addr_t pa;
+
+ pa = page_to_phys(page) & RAM_OFFSET_MASK;
+
+ if (dev == NULL)
+ pa += CRIME_HI_MEM_BASE;
+
+ return pa;
+}
+
+/* This is almost certainly wrong but it's what dma-ip32.c used to use */
+static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
+{
+ unsigned long addr = dma_addr & RAM_OFFSET_MASK;
+
+ if (dma_addr >= 256*1024*1024)
+ addr += CRIME_HI_MEM_BASE;
+
+ return addr;
+}
+
+static void plat_unmap_dma_mem(dma_addr_t dma_addr)
+{
+}
+
+static inline int plat_device_is_coherent(struct device *dev)
+{
+ return 0; /* IP32 is non-cohernet */
+}
+
+#endif /* __ASM_MACH_IP35_DMA_COHERENCE_H */
diff --git a/include/asm-mips/mach-jazz/dma-coherence.h b/include/asm-mips/mach-jazz/dma-coherence.h
new file mode 100644
index 00000000000..d66979a124a
--- /dev/null
+++ b/include/asm-mips/mach-jazz/dma-coherence.h
@@ -0,0 +1,40 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org>
+ */
+#ifndef __ASM_MACH_JAZZ_DMA_COHERENCE_H
+#define __ASM_MACH_JAZZ_DMA_COHERENCE_H
+
+#include <asm/jazzdma.h>
+
+struct device;
+
+static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
+{
+ return vdma_alloc(virt_to_phys(addr), size);
+}
+
+static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
+{
+ return vdma_alloc(page_to_phys(page), PAGE_SIZE);
+}
+
+static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
+{
+ return vdma_log2phys(dma_addr);
+}
+
+static void plat_unmap_dma_mem(dma_addr_t dma_addr)
+{
+ vdma_free(dma_addr);
+}
+
+static inline int plat_device_is_coherent(struct device *dev)
+{
+ return 0;
+}
+
+#endif /* __ASM_MACH_JAZZ_DMA_COHERENCE_H */
diff --git a/include/asm-mips/spinlock.h b/include/asm-mips/spinlock.h
index fc3217fc111..f1755d28a36 100644
--- a/include/asm-mips/spinlock.h
+++ b/include/asm-mips/spinlock.h
@@ -3,7 +3,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (C) 1999, 2000, 06 by Ralf Baechle
+ * Copyright (C) 1999, 2000, 06 Ralf Baechle (ralf@linux-mips.org)
* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
*/
#ifndef _ASM_SPINLOCK_H
@@ -49,11 +49,18 @@ static inline void __raw_spin_lock(raw_spinlock_t *lock)
__asm__ __volatile__(
" .set noreorder # __raw_spin_lock \n"
"1: ll %1, %2 \n"
- " bnez %1, 1b \n"
+ " bnez %1, 2f \n"
" li %1, 1 \n"
" sc %1, %0 \n"
- " beqz %1, 1b \n"
+ " beqz %1, 2f \n"
" nop \n"
+ " .subsection 2 \n"
+ "2: ll %1, %2 \n"
+ " bnez %1, 2b \n"
+ " li %1, 1 \n"
+ " b 1b \n"
+ " nop \n"
+ " .previous \n"
" .set reorder \n"
: "=m" (lock->lock), "=&r" (tmp)
: "m" (lock->lock)
@@ -99,8 +106,12 @@ static inline unsigned int __raw_spin_trylock(raw_spinlock_t *lock)
"1: ll %0, %3 \n"
" ori %2, %0, 1 \n"
" sc %2, %1 \n"
- " beqz %2, 1b \n"
+ " beqz %2, 2f \n"
" andi %2, %0, 1 \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " nop \n"
+ " .previous \n"
" .set reorder"
: "=&r" (temp), "=m" (lock->lock), "=&r" (res)
: "m" (lock->lock)
@@ -154,11 +165,18 @@ static inline void __raw_read_lock(raw_rwlock_t *rw)
__asm__ __volatile__(
" .set noreorder # __raw_read_lock \n"
"1: ll %1, %2 \n"
- " bltz %1, 1b \n"
+ " bltz %1, 2f \n"
" addu %1, 1 \n"
" sc %1, %0 \n"
" beqz %1, 1b \n"
" nop \n"
+ " .subsection 2 \n"
+ "2: ll %1, %2 \n"
+ " bltz %1, 2b \n"
+ " addu %1, 1 \n"
+ " b 1b \n"
+ " nop \n"
+ " .previous \n"
" .set reorder \n"
: "=m" (rw->lock), "=&r" (tmp)
: "m" (rw->lock)
@@ -192,8 +210,12 @@ static inline void __raw_read_unlock(raw_rwlock_t *rw)
"1: ll %1, %2 \n"
" sub %1, 1 \n"
" sc %1, %0 \n"
- " beqz %1, 1b \n"
+ " beqz %1, 2f \n"
+ " nop \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
" nop \n"
+ " .previous \n"
" .set reorder \n"
: "=m" (rw->lock), "=&r" (tmp)
: "m" (rw->lock)
@@ -222,11 +244,18 @@ static inline void __raw_write_lock(raw_rwlock_t *rw)
__asm__ __volatile__(
" .set noreorder # __raw_write_lock \n"
"1: ll %1, %2 \n"
- " bnez %1, 1b \n"
+ " bnez %1, 2f \n"
" lui %1, 0x8000 \n"
" sc %1, %0 \n"
- " beqz %1, 1b \n"
+ " beqz %1, 2f \n"
+ " nop \n"
+ " .subsection 2 \n"
+ "2: ll %1, %2 \n"
+ " bnez %1, 2b \n"
+ " lui %1, 0x8000 \n"
+ " b 1b \n"
" nop \n"
+ " .previous \n"
" .set reorder \n"
: "=m" (rw->lock), "=&r" (tmp)
: "m" (rw->lock)
@@ -322,12 +351,15 @@ static inline int __raw_write_trylock(raw_rwlock_t *rw)
" bnez %1, 2f \n"
" lui %1, 0x8000 \n"
" sc %1, %0 \n"
- " beqz %1, 1b \n"
- " nop \n"
+ " beqz %1, 3f \n"
+ " li %2, 1 \n"
+ "2: \n"
__WEAK_ORDERING_MB
- " li %2, 1 \n"
+ " .subsection 2 \n"
+ "3: b 1b \n"
+ " li %2, 0 \n"
+ " .previous \n"
" .set reorder \n"
- "2: \n"
: "=m" (rw->lock), "=&r" (tmp), "=&r" (ret)
: "m" (rw->lock)
: "memory");
diff --git a/include/asm-mips/system.h b/include/asm-mips/system.h
index 5e1289c85ed..597a3743f6a 100644
--- a/include/asm-mips/system.h
+++ b/include/asm-mips/system.h
@@ -110,7 +110,10 @@ static inline unsigned long __xchg_u32(volatile int * m, unsigned int val)
" move %2, %z4 \n"
" .set mips3 \n"
" sc %2, %1 \n"
- " beqz %2, 1b \n"
+ " beqz %2, 2f \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
" .set mips0 \n"
: "=&r" (retval), "=m" (*m), "=&r" (dummy)
: "R" (*m), "Jr" (val)
@@ -155,7 +158,10 @@ static inline __u64 __xchg_u64(volatile __u64 * m, __u64 val)
"1: lld %0, %3 # xchg_u64 \n"
" move %2, %z4 \n"
" scd %2, %1 \n"
- " beqz %2, 1b \n"
+ " beqz %2, 2f \n"
+ " .subsection 2 \n"
+ "2: b 1b \n"
+ " .previous \n"
" .set mips0 \n"
: "=&r" (retval), "=m" (*m), "=&r" (dummy)
: "R" (*m), "Jr" (val)
@@ -232,8 +238,11 @@ static inline unsigned long __cmpxchg_u32(volatile int * m, unsigned long old,
" move $1, %z4 \n"
" .set mips3 \n"
" sc $1, %1 \n"
- " beqz $1, 1b \n"
+ " beqz $1, 3f \n"
"2: \n"
+ " .subsection 2 \n"
+ "3: b 1b \n"
+ " .previous \n"
" .set pop \n"
: "=&r" (retval), "=R" (*m)
: "R" (*m), "Jr" (old), "Jr" (new)
@@ -283,8 +292,11 @@ static inline unsigned long __cmpxchg_u64(volatile int * m, unsigned long old,
" bne %0, %z3, 2f \n"
" move $1, %z4 \n"
" scd $1, %1 \n"
- " beqz $1, 1b \n"
+ " beqz $1, 3f \n"
"2: \n"
+ " .subsection 2 \n"
+ "3: b 1b \n"
+ " .previous \n"
" .set pop \n"
: "=&r" (retval), "=R" (*m)
: "R" (*m), "Jr" (old), "Jr" (new)
diff --git a/include/asm-mips/uaccess.h b/include/asm-mips/uaccess.h
index 825fcbd9eab..3eff8d8fe28 100644
--- a/include/asm-mips/uaccess.h
+++ b/include/asm-mips/uaccess.h
@@ -265,10 +265,14 @@ do { \
*/
#define __get_user_asm_ll32(val, addr) \
{ \
+ union { \
+ unsigned long long l; \
+ __typeof__(*(addr)) t; \
+ } __gu_tmp; \
+ \
__asm__ __volatile__( \
"1: lw %1, (%3) \n" \
"2: lw %D1, 4(%3) \n" \
- " move %0, $0 \n" \
"3: .section .fixup,\"ax\" \n" \
"4: li %0, %4 \n" \
" move %1, $0 \n" \
@@ -279,8 +283,10 @@ do { \
" " __UA_ADDR " 1b, 4b \n" \
" " __UA_ADDR " 2b, 4b \n" \
" .previous \n" \
- : "=r" (__gu_err), "=&r" (val) \
+ : "=r" (__gu_err), "=&r" (__gu_tmp.l) \
: "0" (0), "r" (addr), "i" (-EFAULT)); \
+ \
+ (val) = __gu_tmp.t; \
}
/*