diff options
| -rw-r--r-- | arch/mips/Kconfig | 7 | ||||
| -rw-r--r-- | arch/mips/au1000/common/irq.c | 2 | ||||
| -rw-r--r-- | arch/mips/configs/bigsur_defconfig | 1 | ||||
| -rw-r--r-- | arch/mips/configs/sb1250-swarm_defconfig | 1 | ||||
| -rw-r--r-- | arch/mips/kernel/process.c | 3 | ||||
| -rw-r--r-- | arch/mips/kernel/smp.c | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/smtc.c | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/time.c | 256 | ||||
| -rw-r--r-- | arch/mips/mips-boards/generic/time.c | 26 | ||||
| -rw-r--r-- | arch/mips/qemu/q-irq.c | 4 | ||||
| -rw-r--r-- | arch/mips/qemu/q-setup.c | 1 | ||||
| -rw-r--r-- | arch/mips/sgi-ip22/ip22-int.c | 2 | ||||
| -rw-r--r-- | arch/mips/sgi-ip32/ip32-irq.c | 2 | ||||
| -rw-r--r-- | arch/mips/sibyte/Kconfig | 12 | ||||
| -rw-r--r-- | arch/mips/sibyte/bcm1480/irq.c | 13 | ||||
| -rw-r--r-- | arch/mips/sibyte/sb1250/irq.c | 50 | ||||
| -rw-r--r-- | arch/mips/sibyte/sb1250/time.c | 12 | ||||
| -rw-r--r-- | include/asm-mips/mach-ip27/irq.h | 2 | ||||
| -rw-r--r-- | include/asm-mips/qemu.h | 2 | ||||
| -rw-r--r-- | include/asm-mips/time.h | 10 |
20 files changed, 210 insertions, 200 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 0cd0f835b13..ecce3aab198 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -335,6 +335,7 @@ config QEMU select GENERIC_ISA_DMA select HAVE_STD_PC_SERIAL_PORT select I8259 + select IRQ_CPU select ISA select PCSPEAKER select SWAP_IO_SPACE @@ -667,6 +668,10 @@ config GENERIC_CALIBRATE_DELAY bool default y +config GENERIC_CLOCKEVENTS + bool + default y + config GENERIC_TIME bool default y @@ -901,6 +906,8 @@ config BOOT_ELF64 menu "CPU selection" +source "kernel/time/Kconfig" + choice prompt "CPU type" default CPU_R4X00 diff --git a/arch/mips/au1000/common/irq.c b/arch/mips/au1000/common/irq.c index 47949d6f2c1..a6640b998c6 100644 --- a/arch/mips/au1000/common/irq.c +++ b/arch/mips/au1000/common/irq.c @@ -633,7 +633,7 @@ asmlinkage void plat_irq_dispatch(void) unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM; if (pending & CAUSEF_IP7) - ll_timer_interrupt(63); + do_IRQ(63); else if (pending & CAUSEF_IP2) intc0_req0_irqdispatch(); else if (pending & CAUSEF_IP3) diff --git a/arch/mips/configs/bigsur_defconfig b/arch/mips/configs/bigsur_defconfig index 700a3a2d688..30f3e9a2466 100644 --- a/arch/mips/configs/bigsur_defconfig +++ b/arch/mips/configs/bigsur_defconfig @@ -69,7 +69,6 @@ CONFIG_SIBYTE_SB1xxx_SOC=y CONFIG_SIBYTE_CFE=y # CONFIG_SIBYTE_CFE_CONSOLE is not set # CONFIG_SIBYTE_BUS_WATCHER is not set -# CONFIG_SIBYTE_SB1250_PROF is not set # CONFIG_SIBYTE_TBPROF is not set CONFIG_RWSEM_GENERIC_SPINLOCK=y # CONFIG_ARCH_HAS_ILOG2_U32 is not set diff --git a/arch/mips/configs/sb1250-swarm_defconfig b/arch/mips/configs/sb1250-swarm_defconfig index 93f9e8331ad..3d1b6281d88 100644 --- a/arch/mips/configs/sb1250-swarm_defconfig +++ b/arch/mips/configs/sb1250-swarm_defconfig @@ -70,7 +70,6 @@ CONFIG_SIBYTE_HAS_LDT=y CONFIG_SIBYTE_CFE=y # CONFIG_SIBYTE_CFE_CONSOLE is not set # CONFIG_SIBYTE_BUS_WATCHER is not set -# CONFIG_SIBYTE_SB1250_PROF is not set # CONFIG_SIBYTE_TBPROF is not set CONFIG_RWSEM_GENERIC_SPINLOCK=y # CONFIG_ARCH_HAS_ILOG2_U32 is not set diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index aadd2cd5778..f99bb408543 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -11,6 +11,7 @@ #include <linux/errno.h> #include <linux/module.h> #include <linux/sched.h> +#include <linux/tick.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/stddef.h> @@ -52,6 +53,7 @@ void __noreturn cpu_idle(void) { /* endless idle loop with no priority at all */ while (1) { + tick_nohz_stop_sched_tick(); while (!need_resched()) { #ifdef CONFIG_SMTC_IDLE_HOOK_DEBUG extern void smtc_idle_loop_hook(void); @@ -61,6 +63,7 @@ void __noreturn cpu_idle(void) if (cpu_wait) (*cpu_wait)(); } + tick_nohz_restart_sched_tick(); preempt_enable_no_resched(); schedule(); preempt_disable(); diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c index 73b0dab0266..500a7ec2880 100644 --- a/arch/mips/kernel/smp.c +++ b/arch/mips/kernel/smp.c @@ -38,6 +38,7 @@ #include <asm/system.h> #include <asm/mmu_context.h> #include <asm/smp.h> +#include <asm/time.h> #ifdef CONFIG_MIPS_MT_SMTC #include <asm/mipsmtregs.h> @@ -70,6 +71,7 @@ asmlinkage __cpuinit void start_secondary(void) cpu_probe(); cpu_report(); per_cpu_trap_init(); + mips_clockevent_init(); prom_init_secondary(); /* diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c index a7afbf2c971..137183bba54 100644 --- a/arch/mips/kernel/smtc.c +++ b/arch/mips/kernel/smtc.c @@ -867,7 +867,7 @@ void ipi_decode(struct smtc_ipi *pipi) #ifdef CONFIG_SMTC_IDLE_HOOK_DEBUG clock_hang_reported[dest_copy] = 0; #endif /* CONFIG_SMTC_IDLE_HOOK_DEBUG */ - local_timer_interrupt(0); + local_timer_interrupt(0, NULL); irq_exit(); break; case LINUX_SMP_IPI: diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c index d23e6825e98..35988847c98 100644 --- a/arch/mips/kernel/time.c +++ b/arch/mips/kernel/time.c @@ -11,6 +11,7 @@ * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ +#include <linux/clockchips.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/init.h> @@ -34,6 +35,8 @@ #include <asm/sections.h> #include <asm/time.h> +#include <irq.h> + /* * The integer part of the number of usecs per jiffy is taken from tick, * but the fractional part is not recorded, so we calculate it using the @@ -70,10 +73,6 @@ int update_persistent_clock(struct timespec now) /* how many counter cycles in a jiffy */ static unsigned long cycles_per_jiffy __read_mostly; -/* expirelo is the count value for next CPU timer interrupt */ -static unsigned int expirelo; - - /* * Null timer ack for systems not needing one (e.g. i8254). */ @@ -92,18 +91,7 @@ static cycle_t null_hpt_read(void) */ static void c0_timer_ack(void) { - unsigned int count; - - /* Ack this timer interrupt and set the next one. */ - expirelo += cycles_per_jiffy; - write_c0_compare(expirelo); - - /* Check to see if we have missed any timer interrupts. */ - while (((count = read_c0_count()) - expirelo) < 0x7fffffff) { - /* missed_timer_count++; */ - expirelo = count + cycles_per_jiffy; - write_c0_compare(expirelo); - } + write_c0_compare(read_c0_compare()); } /* @@ -114,13 +102,6 @@ static cycle_t c0_hpt_read(void) return read_c0_count(); } -/* For use both as a high precision timer and an interrupt source. */ -static void __init c0_hpt_timer_init(void) -{ - expirelo = read_c0_count() + cycles_per_jiffy; - write_c0_compare(expirelo); -} - int (*mips_timer_state)(void); void (*mips_timer_ack)(void); @@ -140,35 +121,6 @@ void local_timer_interrupt(int irq, void *dev_id) update_process_times(user_mode(get_irq_regs())); } -/* - * High-level timer interrupt service routines. This function - * is set as irqaction->handler and is invoked through do_IRQ. - */ -static irqreturn_t timer_interrupt(int irq, void *dev_id) -{ - write_seqlock(&xtime_lock); - - mips_timer_ack(); - - /* - * call the generic timer interrupt handling - */ - do_timer(1); - - write_sequnlock(&xtime_lock); - - /* - * In UP mode, we call local_timer_interrupt() to do profiling - * and process accouting. - * - * In SMP mode, local_timer_interrupt() is invoked by appropriate - * low-level local timer interrupt handler. - */ - local_timer_interrupt(irq, dev_id); - - return IRQ_HANDLED; -} - int null_perf_irq(void) { return 0; @@ -209,81 +161,6 @@ static inline int handle_perf_irq (int r2) !r2; } -void ll_timer_interrupt(int irq, void *dev_id) -{ - int cpu = smp_processor_id(); - -#ifdef CONFIG_MIPS_MT_SMTC - /* - * In an SMTC system, one Count/Compare set exists per VPE. - * Which TC within a VPE gets the interrupt is essentially - * random - we only know that it shouldn't be one with - * IXMT set. Whichever TC gets the interrupt needs to - * send special interprocessor interrupts to the other - * TCs to make sure that they schedule, etc. - * - * That code is specific to the SMTC kernel, not to - * the a particular platform, so it's invoked from - * the general MIPS timer_interrupt routine. - */ - - /* - * We could be here due to timer interrupt, - * perf counter overflow, or both. - */ - (void) handle_perf_irq(1); - - if (read_c0_cause() & (1 << 30)) { - /* - * There are things we only want to do once per tick - * in an "MP" system. One TC of each VPE will take - * the actual timer interrupt. The others will get - * timer broadcast IPIs. We use whoever it is that takes - * the tick on VPE 0 to run the full timer_interrupt(). - */ - if (cpu_data[cpu].vpe_id == 0) { - timer_interrupt(irq, NULL); - } else { - write_c0_compare(read_c0_count() + - (mips_hpt_frequency/HZ)); - local_timer_interrupt(irq, dev_id); - } - smtc_timer_broadcast(cpu_data[cpu].vpe_id); - } -#else /* CONFIG_MIPS_MT_SMTC */ - int r2 = cpu_has_mips_r2; - - if (handle_perf_irq(r2)) - return; - - if (r2 && ((read_c0_cause() & (1 << 30)) == 0)) - return; - - if (cpu == 0) { - /* - * CPU 0 handles the global timer interrupt job and process - * accounting resets count/compare registers to trigger next - * timer int. - */ - timer_interrupt(irq, NULL); - } else { - /* Everyone else needs to reset the timer int here as - ll_local_timer_interrupt doesn't */ - /* - * FIXME: need to cope with counter underflow. - * More support needs to be added to kernel/time for - * counter/timer interrupts on multiple CPU's - */ - write_c0_compare(read_c0_count() + (mips_hpt_frequency/HZ)); - - /* - * Other CPUs should do profiling and process accounting - */ - local_timer_interrupt(irq, dev_id); - } -#endif /* CONFIG_MIPS_MT_SMTC */ -} - /* * time_init() - it does the following things. * @@ -301,12 +178,6 @@ void ll_timer_interrupt(int irq, void *dev_id) unsigned int mips_hpt_frequency; -static struct irqaction timer_irqaction = { - .handler = timer_interrupt, - .flags = IRQF_DISABLED | IRQF_PERCPU, - .name = "timer", -}; - static unsigned int __init calibrate_hpt(void) { cycle_t frequency, hpt_start, hpt_end, hpt_count, hz; @@ -355,6 +226,65 @@ struct clocksource clocksource_mips = { .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; +static int mips_next_event(unsigned long delta, + struct clock_event_device *evt) +{ + unsigned int cnt; + + cnt = read_c0_count(); + cnt += delta; + write_c0_compare(cnt); + + return ((long)(read_c0_count() - cnt ) > 0) ? -ETIME : 0; +} + +static void mips_set_mode(enum clock_event_mode mode, + struct clock_event_device *evt) +{ + /* Nothing to do ... */ +} + +struct clock_event_device mips_clockevent; + +static struct clock_event_device *global_cd[NR_CPUS]; +static int cp0_timer_irq_installed; + +static irqreturn_t timer_interrupt(int irq, void *dev_id) +{ + const int r2 = cpu_has_mips_r2; + struct clock_event_device *cd; + int cpu = smp_processor_id(); + + /* + * Suckage alert: + * Before R2 of the architecture there was no way to see if a + * performance counter interrupt was pending, so we have to run + * the performance counter interrupt handler anyway. + */ + if (handle_perf_irq(r2)) + goto out; + + /* + * The same applies to performance counter interrupts. But with the + * above we now know that the reason we got here must be a timer + * interrupt. Being the paranoiacs we are we check anyway. + */ + if (!r2 || (read_c0_cause() & (1 << 30))) { + c0_timer_ack(); + cd = global_cd[cpu]; + cd->event_handler(cd); + } + +out: + return IRQ_HANDLED; +} + +static struct irqaction timer_irqaction = { + .handler = timer_interrupt, + .flags = IRQF_DISABLED | IRQF_PERCPU, + .name = "timer", +}; + static void __init init_mips_clocksource(void) { u64 temp; @@ -382,6 +312,56 @@ void __init __weak plat_time_init(void) { } +void __init __weak plat_timer_setup(struct irqaction *irq) +{ +} + +void __cpuinit mips_clockevent_init(void) +{ + uint64_t mips_freq = mips_hpt_frequency; + unsigned int cpu = smp_processor_id(); + struct clock_event_device *cd; + unsigned int irq = MIPS_CPU_IRQ_BASE + 7; + + if (!cpu_has_counter) + return; + + if (cpu == 0) + cd = &mips_clockevent; + else + cd = kzalloc(sizeof(*cd), GFP_ATOMIC); + if (!cd) + return; /* We're probably roadkill ... */ + + cd->name = "MIPS"; + cd->features = CLOCK_EVT_FEAT_ONESHOT; + + /* Calculate the min / max delta */ + cd->mult = div_sc((unsigned long) mips_freq, NSEC_PER_SEC, 32); + cd->shift = 32; + cd->max_delta_ns = clockevent_delta2ns(0x7fffffff, cd); + cd->min_delta_ns = clockevent_delta2ns(0x30, cd); + + cd->rating = 300; + cd->irq = irq; + cd->cpumask = cpumask_of_cpu(cpu); + cd->set_next_event = mips_next_event; + cd->set_mode = mips_set_mode; + + global_cd[cpu] = cd; + clockevents_register_device(cd); + + if (!cp0_timer_irq_installed) { +#ifdef CONFIG_MIPS_MT_SMTC +#define CPUCTR_IMASKBIT (0x100 << cp0_compare_irq) + setup_irq_smtc(irq, &timer_irqaction, CPUCTR_IMASKBIT); +#else + setup_irq(irq, &timer_irqaction); +#endif /* CONFIG_MIPS_MT_SMTC */ + cp0_timer_irq_installed = 1; + } +} + void __init time_init(void) { plat_time_init(); @@ -407,11 +387,6 @@ void __init time_init(void) /* Calculate cache parameters. */ cycles_per_jiffy = (mips_hpt_frequency + HZ / 2) / HZ; - /* - * This sets up the high precision - * timer for the first interrupt. - */ - c0_hpt_timer_init(); } } if (!mips_hpt_frequency) @@ -421,6 +396,10 @@ void __init time_init(void) printk("Using %u.%03u MHz high precision timer.\n", ((mips_hpt_frequency + 500) / 1000) / 1000, ((mips_hpt_frequency + 500) / 1000) % 1000); + +#ifdef CONFIG_IRQ_CPU + setup_irq(MIPS_CPU_IRQ_BASE + 7, &timer_irqaction); +#endif } if (!mips_timer_ack) @@ -441,4 +420,5 @@ void __init time_init(void) plat_timer_setup(&timer_irqaction); init_mips_clocksource(); + mips_clockevent_init(); } diff --git a/arch/mips/mips-boards/generic/time.c b/arch/mips/mips-boards/generic/time.c index 345de881013..2c8db3e0f4b 100644 --- a/arch/mips/mips-boards/generic/time.c +++ b/arch/mips/mips-boards/generic/time.c @@ -144,20 +144,20 @@ void __init plat_time_init(void) mips_scroll_message(); } -static irqreturn_t mips_perf_interrupt(int irq, void *dev_id) -{ - return perf_irq(); -} +//static irqreturn_t mips_perf_interrupt(int irq, void *dev_id) +//{ +// return perf_irq(); +//} -static struct irqaction perf_irqaction = { - .handler = mips_perf_interrupt, - .flags = IRQF_DISABLED | IRQF_PERCPU, - .name = "performance", -}; +//static struct irqaction perf_irqaction = { +// .handler = mips_perf_interrupt, +// .flags = IRQF_DISABLED | IRQF_PERCPU, +// .name = "performance", +//}; void __init plat_perf_setup(void) { - struct irqaction *irq = &perf_irqaction; +// struct irqaction *irq = &perf_irqaction; cp0_perfcount_irq = -1; @@ -170,12 +170,6 @@ void __init plat_perf_setup(void) if (cp0_perfcount_irq >= 0) { if (cpu_has_vint) set_vi_handler(cp0_perfcount_irq, mips_perf_dispatch); -#ifdef CONFIG_MIPS_MT_SMTC - setup_irq_smtc(cp0_perfcount_irq, irq, - 0x100 << cp0_perfcount_irq); -#else - setup_irq(cp0_perfcount_irq, irq); -#endif /* CONFIG_MIPS_MT_SMTC */ #ifdef CONFIG_SMP set_irq_handler(cp0_perfcount_irq, handle_percpu_irq); #endif diff --git a/arch/mips/qemu/q-irq.c b/arch/mips/qemu/q-irq.c index 89891e984b3..4681757460a 100644 --- a/arch/mips/qemu/q-irq.c +++ b/arch/mips/qemu/q-irq.c @@ -2,6 +2,7 @@ #include <linux/linkage.h> #include <asm/i8259.h> +#include <asm/irq_cpu.h> #include <asm/mipsregs.h> #include <asm/qemu.h> #include <asm/system.h> @@ -12,7 +13,7 @@ asmlinkage void plat_irq_dispatch(void) unsigned int pending = read_c0_status() & read_c0_cause(); if (pending & 0x8000) { - ll_timer_interrupt(Q_COUNT_COMPARE_IRQ); + do_IRQ(Q_COUNT_COMPARE_IRQ); return; } if (pending & 0x0400) { @@ -29,6 +30,7 @@ void __init arch_init_irq(void) { mips_hpt_frequency = QEMU_C0_COUNTER_CLOCK; /* 100MHz */ + mips_cpu_irq_init(); init_i8259_irqs(); set_c0_status(0x8400); } diff --git a/arch/mips/qemu/q-setup.c b/arch/mips/qemu/q-setup.c index 841394336f0..89a207650ce 100644 --- a/arch/mips/qemu/q-setup.c +++ b/arch/mips/qemu/q-setup.c @@ -17,7 +17,6 @@ void __init plat_timer_setup(struct irqaction *irq) outb_p(0x34,0x43); /* binary, mode 2, LSB/MSB, ch 0 */ outb_p(LATCH & 0xff , 0x40); /* LSB */ outb(LATCH >> 8 , 0x40); /* MSB */ - setup_irq(0, irq); } void __init plat_mem_setup(void) diff --git a/arch/mips/sgi-ip22/ip22-int.c b/arch/mips/sgi-ip22/ip22-int.c index 338c0d70698..f199da7e49c 100644 --- a/arch/mips/sgi-ip22/ip22-int.c +++ b/arch/mips/sgi-ip22/ip22-int.c @@ -242,7 +242,7 @@ asmlinkage void plat_irq_dispatch(void) * First we check for r4k counter/timer IRQ. */ if (pending & CAUSEF_IP7) - ll_timer_interrupt(SGI_TIMER_IRQ, NULL); + do_IRQ(SGI_TIMER_IRQ); else if (pending & CAUSEF_IP2) indy_local0_irqdispatch(); else if (pending & CAUSEF_IP3) diff --git a/arch/mips/sgi-ip32/ip32-irq.c b/arch/mips/sgi-ip32/ip32-irq.c index 5bad1b744d0..002095b364a 100644 --- a/arch/mips/sgi-ip32/ip32-irq.c +++ b/arch/mips/sgi-ip32/ip32-irq.c @@ -457,7 +457,7 @@ static void ip32_irq4(void) static void ip32_irq5(void) { - ll_timer_interrupt(IP32_R4K_TIMER_IRQ); + do_IRQ(IP32_R4K_TIMER_IRQ); } asmlinkage void plat_irq_dispatch(void) diff --git a/arch/mips/sibyte/Kconfig b/arch/mips/sibyte/Kconfig index 841b301c99f..e8fb880272b 100644 --- a/arch/mips/sibyte/Kconfig +++ b/arch/mips/sibyte/Kconfig @@ -1,6 +1,7 @@ config SIBYTE_SB1250 bool select HW_HAS_PCI + select IRQ_CPU select SIBYTE_ENABLE_LDT_IF_PCI select SIBYTE_HAS_ZBUS_PROFILING select SIBYTE_SB1xxx_SOC @@ -8,6 +9,7 @@ config SIBYTE_SB1250 config SIBYTE_BCM1120 bool + select IRQ_CPU select SIBYTE_BCM112X select SIBYTE_HAS_ZBUS_PROFILING select SIBYTE_SB1xxx_SOC @@ -15,6 +17,7 @@ config SIBYTE_BCM1120 config SIBYTE_BCM1125 bool select HW_HAS_PCI + select IRQ_CPU select SIBYTE_BCM112X select SIBYTE_HAS_ZBUS_PROFILING select SIBYTE_SB1xxx_SOC @@ -22,6 +25,7 @@ config SIBYTE_BCM1125 config SIBYTE_BCM1125H bool select HW_HAS_PCI + select IRQ_CPU select SIBYTE_BCM112X select SIBYTE_ENABLE_LDT_IF_PCI select SIBYTE_HAS_ZBUS_PROFILING @@ -29,12 +33,14 @@ config SIBYTE_BCM1125H config SIBYTE_BCM112X bool + select IRQ_CPU select SIBYTE_SB1xxx_SOC select SIBYTE_HAS_ZBUS_PROFILING config SIBYTE_BCM1x80 bool select HW_HAS_PCI + select IRQ_CPU select SIBYTE_HAS_ZBUS_PROFILING select SIBYTE_SB1xxx_SOC select SYS_SUPPORTS_SMP @@ -42,6 +48,7 @@ config SIBYTE_BCM1x80 config SIBYTE_BCM1x55 bool select HW_HAS_PCI + select IRQ_CPU select SIBYTE_SB1xxx_SOC select SIBYTE_HAS_ZBUS_PROFILING select SYS_SUPPORTS_SMP @@ -49,6 +56,7 @@ config SIBYTE_BCM1x55 config SIBYTE_SB1xxx_SOC bool select DMA_COHERENT + select IRQ_CPU select SIBYTE_CFE select SWAP_IO_SPACE select SYS_SUPPORTS_32BIT_KERNEL @@ -166,10 +174,6 @@ config SIBYTE_BW_TRACE buffer activity. Raw buffer data is dumped to console, and must be processed off-line. -config SIBYTE_SB1250_PROF - bool "Support for SB1/SOC profiling - SB1/SCD perf counters" - depends on SIBYTE_SB1xxx_SOC - config SIBYTE_TBPROF tristate "Support for ZBbus profiling" depends on SIBYTE_HAS_ZBUS_PROFILING diff --git a/arch/mips/sibyte/bcm1480/irq.c b/arch/mips/sibyte/bcm1480/irq.c index e729b5f3026..cf979dbb282 100644 --- a/arch/mips/sibyte/bcm1480/irq.c +++ b/arch/mips/sibyte/bcm1480/irq.c @@ -450,7 +450,6 @@ static void bcm1480_kgdb_interrupt(void) #endif /* CONFIG_KGDB */ -extern void bcm1480_timer_interrupt(void); extern void bcm1480_mailbox_interrupt(void); asmlinkage void plat_irq_dispatch(void) @@ -470,8 +469,16 @@ asmlinkage void plat_irq_dispatch(void) else #endif - if (pending & CAUSEF_IP4) - bcm1480_timer_interrupt(); + if (pending & CAUSEF_IP4) { + int cpu = smp_processor_id(); + int irq = K_BCM1480_INT_TIMER_0 + cpu; + + /* Reset the timer */ + __raw_writeq(M_SCD_TIMER_ENABLE|M_SCD_TIMER_MODE_CONTINUOUS, + IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_CFG))); + + do_IRQ(irq); + } #ifdef CONFIG_SMP else if (pending & CAUSEF_IP3) diff --git a/arch/mips/sibyte/sb1250/irq.c b/arch/mips/sibyte/sb1250/irq.c index ad593a6c20b..6a4cc84194a 100644 --- a/arch/mips/sibyte/sb1250/irq.c +++ b/arch/mips/sibyte/sb1250/irq.c @@ -28,6 +28,7 @@ #include <asm/errno.h> #include <asm/signal.h> #include <asm/system.h> +#include <asm/time.h> #include <asm/io.h> #include <asm/sibyte/sb1250_regs.h> @@ -399,18 +400,45 @@ static void sb1250_kgdb_interrupt(void) #endif /* CONFIG_KGDB */ -extern void sb1250_timer_interrupt(void); +static inline void sb1250_timer_interrupt(void) +{ + int cpu = smp_processor_id(); + int irq = K_INT_TIMER_0 + cpu; + + irq_enter(); + kstat_this_cpu.irqs[irq]++; + + write_seqlock(&xtime_lock); + + /* ACK interrupt */ + ____raw_writeq(M_SCD_TIMER_ENABLE | M_SCD_TIMER_MODE_CONTINUOUS, + IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_CFG))); + + /* + * call the generic timer interrupt handling + */ + do_timer(1); + + write_sequnlock(&xtime_lock); + + /* + * In UP mode, we call local_timer_interrupt() to do profiling + * and process accouting. + * + * In SMP mode, local_timer_interrupt() is invoked by appropriate + * low-level local timer interrupt handler. + */ + local_timer_interrupt(irq); + + irq_exit(); +} + extern void sb1250_mailbox_interrupt(void); asmlinkage void plat_irq_dispatch(void) { unsigned int pending; -#ifdef CONFIG_SIBYTE_SB1250_PROF - /* Set compare to count to silence count/compare timer interrupts */ - write_c0_compare(read_c0_count()); -#endif - /* * What a pain. We have to be really careful saving the upper 32 bits * of any * register across function calls if we don't want them @@ -423,13 +451,9 @@ asmlinkage void plat_irq_dispatch(void) pending = read_c0_cause() & read_c0_status() & ST0_IM; -#ifdef CONFIG_SIBYTE_SB1250_PROF - if (pending & CAUSEF_IP7) /* Cpu performance counter interrupt */ - sbprof_cpu_intr(); - else -#endif - - if (pending & CAUSEF_IP4) + if (pending & CAUSEF_IP7) /* CPU performance counter interrupt */ + do_IRQ(MIPS_CPU_IRQ_BASE + 7); + else if (pending & CAUSEF_IP4) sb1250_timer_interrupt(); #ifdef CONFIG_SMP diff --git a/arch/mips/sibyte/sb1250/time.c b/arch/mips/sibyte/sb1250/time.c index 5bb83cd4c11..eb177075e9c 100644 --- a/arch/mips/sibyte/sb1250/time.c +++ b/arch/mips/sibyte/sb1250/time.c @@ -116,18 +116,6 @@ void sb1250_time_init(void) */ } -void sb1250_timer_interrupt(void) -{ - int cpu = smp_processor_id(); - int irq = K_INT_TIMER_0 + cpu; - - /* ACK interrupt */ - ____raw_writeq(M_SCD_TIMER_ENABLE | M_SCD_TIMER_MODE_CONTINUOUS, - IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_CFG))); - - ll_timer_interrupt(irq); -} - /* * The HPT is free running from SB1250_HPT_VALUE down to 0 then starts over * again. diff --git a/include/asm-mips/mach-ip27/irq.h b/include/asm-mips/mach-ip27/irq.h index 25f0c3f39ad..cf4384bfa84 100644 --- a/include/asm-mips/mach-ip27/irq.h +++ b/include/asm-mips/mach-ip27/irq.h @@ -17,4 +17,6 @@ */ #define NR_IRQS 256 +#include_next <irq.h> + #endif /* __ASM_MACH_IP27_IRQ_H */ diff --git a/include/asm-mips/qemu.h b/include/asm-mips/qemu.h index 531caf44560..487ced4a40d 100644 --- a/include/asm-mips/qemu.h +++ b/include/asm-mips/qemu.h @@ -12,7 +12,7 @@ * Interrupt numbers */ #define Q_PIC_IRQ_BASE 0 -#define Q_COUNT_COMPARE_IRQ 16 +#define Q_COUNT_COMPARE_IRQ 23 /* * Qemu clock rate. Unlike on real MIPS this has no relation to the diff --git a/include/asm-mips/time.h b/include/asm-mips/time.h index 3516b32c9ef..35555bd5c52 100644 --- a/include/asm-mips/time.h +++ b/include/asm-mips/time.h @@ -49,11 +49,6 @@ extern void (*mips_timer_ack)(void); extern struct clocksource clocksource_mips; /* - * The low-level timer interrupt routine. - */ -extern void ll_timer_interrupt(int irq, void *dev_id); - -/* * profiling and process accouting is done separately in local_timer_interrupt */ extern void local_timer_interrupt(int irq, void *dev_id); @@ -78,4 +73,9 @@ extern unsigned int mips_hpt_frequency; */ extern int (*perf_irq)(void); +/* + * Initialize the calling CPU's compare interrupt as clockevent device + */ +extern void mips_clockevent_init(void); + #endif /* _ASM_TIME_H */ |