X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fpowerpc%2Fplatforms%2Fps3%2Finterrupt.c;h=e59634f7af9637d29bca47505508bb30cf624953;hb=fdedb4caea36cfc00571928a727ac87906037712;hp=ec9030dbb5f1ba13fc86c116d1675f6a5c82dc15;hpb=c8d8170feb824875baf68f8aaecb181a6500ce81;p=linux-2.6-omap-h63xx.git diff --git a/arch/powerpc/platforms/ps3/interrupt.c b/arch/powerpc/platforms/ps3/interrupt.c index ec9030dbb5f..e59634f7af9 100644 --- a/arch/powerpc/platforms/ps3/interrupt.c +++ b/arch/powerpc/platforms/ps3/interrupt.c @@ -30,9 +30,9 @@ #include "platform.h" #if defined(DEBUG) -#define DBG(fmt...) udbg_printf(fmt) +#define DBG udbg_printf #else -#define DBG(fmt...) do{if(0)printk(fmt);}while(0) +#define DBG pr_debug #endif /** @@ -78,18 +78,84 @@ struct ps3_bmp { /** * struct ps3_private - a per cpu data structure * @bmp: ps3_bmp structure - * @node: HV logical_ppe_id - * @cpu: HV thread_id + * @ppe_id: HV logical_ppe_id + * @thread_id: HV thread_id */ struct ps3_private { struct ps3_bmp bmp __attribute__ ((aligned (PS3_BMP_MINALIGN))); - u64 node; - unsigned int cpu; + u64 ppe_id; + u64 thread_id; }; static DEFINE_PER_CPU(struct ps3_private, ps3_private); +/** + * ps3_chip_mask - Set an interrupt mask bit in ps3_bmp. + * @virq: The assigned Linux virq. + * + * Sets ps3_bmp.mask and calls lv1_did_update_interrupt_mask(). + */ + +static void ps3_chip_mask(unsigned int virq) +{ + struct ps3_private *pd = get_irq_chip_data(virq); + unsigned long flags; + + pr_debug("%s:%d: thread_id %lu, virq %d\n", __func__, __LINE__, + pd->thread_id, virq); + + local_irq_save(flags); + clear_bit(63 - virq, &pd->bmp.mask); + lv1_did_update_interrupt_mask(pd->ppe_id, pd->thread_id); + local_irq_restore(flags); +} + +/** + * ps3_chip_unmask - Clear an interrupt mask bit in ps3_bmp. + * @virq: The assigned Linux virq. + * + * Clears ps3_bmp.mask and calls lv1_did_update_interrupt_mask(). + */ + +static void ps3_chip_unmask(unsigned int virq) +{ + struct ps3_private *pd = get_irq_chip_data(virq); + unsigned long flags; + + pr_debug("%s:%d: thread_id %lu, virq %d\n", __func__, __LINE__, + pd->thread_id, virq); + + local_irq_save(flags); + set_bit(63 - virq, &pd->bmp.mask); + lv1_did_update_interrupt_mask(pd->ppe_id, pd->thread_id); + local_irq_restore(flags); +} + +/** + * ps3_chip_eoi - HV end-of-interrupt. + * @virq: The assigned Linux virq. + * + * Calls lv1_end_of_interrupt_ext(). + */ + +static void ps3_chip_eoi(unsigned int virq) +{ + const struct ps3_private *pd = get_irq_chip_data(virq); + lv1_end_of_interrupt_ext(pd->ppe_id, pd->thread_id, virq); +} + +/** + * ps3_irq_chip - Represents the ps3_bmp as a Linux struct irq_chip. + */ + +static struct irq_chip ps3_irq_chip = { + .typename = "ps3", + .mask = ps3_chip_mask, + .unmask = ps3_chip_unmask, + .eoi = ps3_chip_eoi, +}; + /** * ps3_virq_setup - virq related setup. * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be @@ -101,8 +167,8 @@ static DEFINE_PER_CPU(struct ps3_private, ps3_private); * ps3_private data. */ -int ps3_virq_setup(enum ps3_cpu_binding cpu, unsigned long outlet, - unsigned int *virq) +static int ps3_virq_setup(enum ps3_cpu_binding cpu, unsigned long outlet, + unsigned int *virq) { int result; struct ps3_private *pd; @@ -134,6 +200,8 @@ int ps3_virq_setup(enum ps3_cpu_binding cpu, unsigned long outlet, goto fail_set; } + ps3_chip_mask(*virq); + return result; fail_set: @@ -149,12 +217,12 @@ fail_create: * Clears chip data and calls irq_dispose_mapping() for the virq. */ -int ps3_virq_destroy(unsigned int virq) +static int ps3_virq_destroy(unsigned int virq) { const struct ps3_private *pd = get_irq_chip_data(virq); - pr_debug("%s:%d: node %lu, cpu %d, virq %u\n", __func__, __LINE__, - pd->node, pd->cpu, virq); + pr_debug("%s:%d: ppe_id %lu, thread_id %lu, virq %u\n", __func__, + __LINE__, pd->ppe_id, pd->thread_id, virq); set_irq_chip_data(virq, NULL); irq_dispose_mapping(virq); @@ -190,7 +258,8 @@ int ps3_irq_plug_setup(enum ps3_cpu_binding cpu, unsigned long outlet, /* Binds outlet to cpu + virq. */ - result = lv1_connect_irq_plug_ext(pd->node, pd->cpu, *virq, outlet, 0); + result = lv1_connect_irq_plug_ext(pd->ppe_id, pd->thread_id, *virq, + outlet, 0); if (result) { pr_info("%s:%d: lv1_connect_irq_plug_ext failed: %s\n", @@ -222,10 +291,12 @@ int ps3_irq_plug_destroy(unsigned int virq) int result; const struct ps3_private *pd = get_irq_chip_data(virq); - pr_debug("%s:%d: node %lu, cpu %d, virq %u\n", __func__, __LINE__, - pd->node, pd->cpu, virq); + pr_debug("%s:%d: ppe_id %lu, thread_id %lu, virq %u\n", __func__, + __LINE__, pd->ppe_id, pd->thread_id, virq); + + ps3_chip_mask(virq); - result = lv1_disconnect_irq_plug_ext(pd->node, pd->cpu, virq); + result = lv1_disconnect_irq_plug_ext(pd->ppe_id, pd->thread_id, virq); if (result) pr_info("%s:%d: lv1_disconnect_irq_plug_ext failed: %s\n", @@ -282,7 +353,9 @@ int ps3_event_receive_port_destroy(unsigned int virq) { int result; - pr_debug(" -> %s:%d virq: %u\n", __func__, __LINE__, virq); + pr_debug(" -> %s:%d virq %u\n", __func__, __LINE__, virq); + + ps3_chip_mask(virq); result = lv1_destruct_event_receive_port(virq_to_hw(virq)); @@ -290,17 +363,14 @@ int ps3_event_receive_port_destroy(unsigned int virq) pr_debug("%s:%d: lv1_destruct_event_receive_port failed: %s\n", __func__, __LINE__, ps3_result(result)); - /* lv1_destruct_event_receive_port() destroys the IRQ plug, - * so don't call ps3_irq_plug_destroy() here. + /* + * Don't call ps3_virq_destroy() here since ps3_smp_cleanup_cpu() + * calls from interrupt context (smp_call_function) when kexecing. */ - result = ps3_virq_destroy(virq); - BUG_ON(result); - pr_debug(" <- %s:%d\n", __func__, __LINE__); return result; } -EXPORT_SYMBOL_GPL(ps3_event_receive_port_destroy); int ps3_send_event_locally(unsigned int virq) { @@ -311,17 +381,15 @@ int ps3_send_event_locally(unsigned int virq) * ps3_sb_event_receive_port_setup - Setup a system bus event receive port. * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be * serviced on. - * @did: The HV device identifier read from the system repository. - * @interrupt_id: The device interrupt id read from the system repository. + * @dev: The system bus device instance. * @virq: The assigned Linux virq. * * An event irq represents a virtual device interrupt. The interrupt_id * coresponds to the software interrupt number. */ -int ps3_sb_event_receive_port_setup(enum ps3_cpu_binding cpu, - const struct ps3_device_id *did, unsigned int interrupt_id, - unsigned int *virq) +int ps3_sb_event_receive_port_setup(struct ps3_system_bus_device *dev, + enum ps3_cpu_binding cpu, unsigned int *virq) { /* this should go in system-bus.c */ @@ -332,8 +400,8 @@ int ps3_sb_event_receive_port_setup(enum ps3_cpu_binding cpu, if (result) return result; - result = lv1_connect_interrupt_event_receive_port(did->bus_id, - did->dev_id, virq_to_hw(*virq), interrupt_id); + result = lv1_connect_interrupt_event_receive_port(dev->bus_id, + dev->dev_id, virq_to_hw(*virq), dev->interrupt_id); if (result) { pr_debug("%s:%d: lv1_connect_interrupt_event_receive_port" @@ -345,24 +413,24 @@ int ps3_sb_event_receive_port_setup(enum ps3_cpu_binding cpu, } pr_debug("%s:%d: interrupt_id %u, virq %u\n", __func__, __LINE__, - interrupt_id, *virq); + dev->interrupt_id, *virq); return 0; } EXPORT_SYMBOL(ps3_sb_event_receive_port_setup); -int ps3_sb_event_receive_port_destroy(const struct ps3_device_id *did, - unsigned int interrupt_id, unsigned int virq) +int ps3_sb_event_receive_port_destroy(struct ps3_system_bus_device *dev, + unsigned int virq) { /* this should go in system-bus.c */ int result; pr_debug(" -> %s:%d: interrupt_id %u, virq %u\n", __func__, __LINE__, - interrupt_id, virq); + dev->interrupt_id, virq); - result = lv1_disconnect_interrupt_event_receive_port(did->bus_id, - did->dev_id, virq_to_hw(virq), interrupt_id); + result = lv1_disconnect_interrupt_event_receive_port(dev->bus_id, + dev->dev_id, virq_to_hw(virq), dev->interrupt_id); if (result) pr_debug("%s:%d: lv1_disconnect_interrupt_event_receive_port" @@ -372,6 +440,14 @@ int ps3_sb_event_receive_port_destroy(const struct ps3_device_id *did, result = ps3_event_receive_port_destroy(virq); BUG_ON(result); + /* + * ps3_event_receive_port_destroy() destroys the IRQ plug, + * so don't call ps3_irq_plug_destroy() here. + */ + + result = ps3_virq_destroy(virq); + BUG_ON(result); + pr_debug(" <- %s:%d\n", __func__, __LINE__); return result; } @@ -412,16 +488,24 @@ EXPORT_SYMBOL_GPL(ps3_io_irq_setup); int ps3_io_irq_destroy(unsigned int virq) { int result; + unsigned long outlet = virq_to_hw(virq); - result = lv1_destruct_io_irq_outlet(virq_to_hw(virq)); + ps3_chip_mask(virq); - if (result) - pr_debug("%s:%d: lv1_destruct_io_irq_outlet failed: %s\n", - __func__, __LINE__, ps3_result(result)); + /* + * lv1_destruct_io_irq_outlet() will destroy the IRQ plug, + * so call ps3_irq_plug_destroy() first. + */ result = ps3_irq_plug_destroy(virq); BUG_ON(result); + result = lv1_destruct_io_irq_outlet(outlet); + + if (result) + pr_debug("%s:%d: lv1_destruct_io_irq_outlet failed: %s\n", + __func__, __LINE__, ps3_result(result)); + return result; } EXPORT_SYMBOL_GPL(ps3_io_irq_destroy); @@ -461,11 +545,13 @@ int ps3_vuart_irq_setup(enum ps3_cpu_binding cpu, void* virt_addr_bmp, return result; } +EXPORT_SYMBOL_GPL(ps3_vuart_irq_setup); int ps3_vuart_irq_destroy(unsigned int virq) { int result; + ps3_chip_mask(virq); result = lv1_deconfigure_virtual_uart_irq(); if (result) { @@ -479,6 +565,7 @@ int ps3_vuart_irq_destroy(unsigned int virq) return result; } +EXPORT_SYMBOL_GPL(ps3_vuart_irq_destroy); /** * ps3_spe_irq_setup - Setup an spe virq. @@ -514,9 +601,14 @@ int ps3_spe_irq_setup(enum ps3_cpu_binding cpu, unsigned long spe_id, int ps3_spe_irq_destroy(unsigned int virq) { - int result = ps3_irq_plug_destroy(virq); + int result; + + ps3_chip_mask(virq); + + result = ps3_irq_plug_destroy(virq); BUG_ON(result); - return 0; + + return result; } @@ -533,7 +625,7 @@ static void _dump_64_bmp(const char *header, const u64 *p, unsigned cpu, *p & 0xffff); } -static void __attribute__ ((unused)) _dump_256_bmp(const char *header, +static void __maybe_unused _dump_256_bmp(const char *header, const u64 *p, unsigned cpu, const char* func, int line) { pr_debug("%s:%d: %s %u {%016lx:%016lx:%016lx:%016lx}\n", @@ -546,86 +638,25 @@ static void _dump_bmp(struct ps3_private* pd, const char* func, int line) unsigned long flags; spin_lock_irqsave(&pd->bmp.lock, flags); - _dump_64_bmp("stat", &pd->bmp.status, pd->cpu, func, line); - _dump_64_bmp("mask", &pd->bmp.mask, pd->cpu, func, line); + _dump_64_bmp("stat", &pd->bmp.status, pd->thread_id, func, line); + _dump_64_bmp("mask", &pd->bmp.mask, pd->thread_id, func, line); spin_unlock_irqrestore(&pd->bmp.lock, flags); } #define dump_mask(_x) _dump_mask(_x, __func__, __LINE__) -static void __attribute__ ((unused)) _dump_mask(struct ps3_private* pd, +static void __maybe_unused _dump_mask(struct ps3_private *pd, const char* func, int line) { unsigned long flags; spin_lock_irqsave(&pd->bmp.lock, flags); - _dump_64_bmp("mask", &pd->bmp.mask, pd->cpu, func, line); + _dump_64_bmp("mask", &pd->bmp.mask, pd->thread_id, func, line); spin_unlock_irqrestore(&pd->bmp.lock, flags); } #else static void dump_bmp(struct ps3_private* pd) {}; #endif /* defined(DEBUG) */ -static void ps3_chip_mask(unsigned int virq) -{ - struct ps3_private *pd = get_irq_chip_data(virq); - u64 bit = 0x8000000000000000UL >> virq; - u64 *p = &pd->bmp.mask; - u64 old; - unsigned long flags; - - pr_debug("%s:%d: cpu %u, virq %d\n", __func__, __LINE__, pd->cpu, virq); - - local_irq_save(flags); - asm volatile( - "1: ldarx %0,0,%3\n" - "andc %0,%0,%2\n" - "stdcx. %0,0,%3\n" - "bne- 1b" - : "=&r" (old), "+m" (*p) - : "r" (bit), "r" (p) - : "cc" ); - - lv1_did_update_interrupt_mask(pd->node, pd->cpu); - local_irq_restore(flags); -} - -static void ps3_chip_unmask(unsigned int virq) -{ - struct ps3_private *pd = get_irq_chip_data(virq); - u64 bit = 0x8000000000000000UL >> virq; - u64 *p = &pd->bmp.mask; - u64 old; - unsigned long flags; - - pr_debug("%s:%d: cpu %u, virq %d\n", __func__, __LINE__, pd->cpu, virq); - - local_irq_save(flags); - asm volatile( - "1: ldarx %0,0,%3\n" - "or %0,%0,%2\n" - "stdcx. %0,0,%3\n" - "bne- 1b" - : "=&r" (old), "+m" (*p) - : "r" (bit), "r" (p) - : "cc" ); - - lv1_did_update_interrupt_mask(pd->node, pd->cpu); - local_irq_restore(flags); -} - -static void ps3_chip_eoi(unsigned int virq) -{ - const struct ps3_private *pd = get_irq_chip_data(virq); - lv1_end_of_interrupt_ext(pd->node, pd->cpu, virq); -} - -static struct irq_chip irq_chip = { - .typename = "ps3", - .mask = ps3_chip_mask, - .unmask = ps3_chip_unmask, - .eoi = ps3_chip_eoi, -}; - static void ps3_host_unmap(struct irq_host *h, unsigned int virq) { set_irq_chip_data(virq, NULL); @@ -637,14 +668,21 @@ static int ps3_host_map(struct irq_host *h, unsigned int virq, pr_debug("%s:%d: hwirq %lu, virq %u\n", __func__, __LINE__, hwirq, virq); - set_irq_chip_and_handler(virq, &irq_chip, handle_fasteoi_irq); + set_irq_chip_and_handler(virq, &ps3_irq_chip, handle_fasteoi_irq); return 0; } +static int ps3_host_match(struct irq_host *h, struct device_node *np) +{ + /* Match all */ + return 1; +} + static struct irq_host_ops ps3_host_ops = { .map = ps3_host_map, .unmap = ps3_host_unmap, + .match = ps3_host_match, }; void __init ps3_register_ipi_debug_brk(unsigned int cpu, unsigned int virq) @@ -657,7 +695,7 @@ void __init ps3_register_ipi_debug_brk(unsigned int cpu, unsigned int virq) cpu, virq, pd->bmp.ipi_debug_brk_mask); } -unsigned int ps3_get_irq(void) +static unsigned int ps3_get_irq(void) { struct ps3_private *pd = &__get_cpu_var(ps3_private); u64 x = (pd->bmp.status & pd->bmp.mask); @@ -671,9 +709,9 @@ unsigned int ps3_get_irq(void) asm volatile("cntlzd %0,%1" : "=r" (plug) : "r" (x)); plug &= 0x3f; - if (unlikely(plug) == NO_IRQ) { - pr_debug("%s:%d: no plug found: cpu %u\n", __func__, __LINE__, - pd->cpu); + if (unlikely(plug == NO_IRQ)) { + pr_debug("%s:%d: no plug found: thread_id %lu\n", __func__, + __LINE__, pd->thread_id); dump_bmp(&per_cpu(ps3_private, 0)); dump_bmp(&per_cpu(ps3_private, 1)); return NO_IRQ; @@ -695,7 +733,7 @@ void __init ps3_init_IRQ(void) unsigned cpu; struct irq_host *host; - host = irq_alloc_host(IRQ_HOST_MAP_NOMAP, 0, &ps3_host_ops, + host = irq_alloc_host(NULL, IRQ_HOST_MAP_NOMAP, 0, &ps3_host_ops, PS3_INVALID_OUTLET); irq_set_default_host(host); irq_set_virq_count(PS3_PLUG_MAX + 1); @@ -703,16 +741,16 @@ void __init ps3_init_IRQ(void) for_each_possible_cpu(cpu) { struct ps3_private *pd = &per_cpu(ps3_private, cpu); - lv1_get_logical_ppe_id(&pd->node); - pd->cpu = get_hard_smp_processor_id(cpu); + lv1_get_logical_ppe_id(&pd->ppe_id); + pd->thread_id = get_hard_smp_processor_id(cpu); spin_lock_init(&pd->bmp.lock); - pr_debug("%s:%d: node %lu, cpu %d, bmp %lxh\n", __func__, - __LINE__, pd->node, pd->cpu, + pr_debug("%s:%d: ppe_id %lu, thread_id %lu, bmp %lxh\n", + __func__, __LINE__, pd->ppe_id, pd->thread_id, ps3_mm_phys_to_lpar(__pa(&pd->bmp))); - result = lv1_configure_irq_state_bitmap(pd->node, pd->cpu, - ps3_mm_phys_to_lpar(__pa(&pd->bmp))); + result = lv1_configure_irq_state_bitmap(pd->ppe_id, + pd->thread_id, ps3_mm_phys_to_lpar(__pa(&pd->bmp))); if (result) pr_debug("%s:%d: lv1_configure_irq_state_bitmap failed:" @@ -722,3 +760,16 @@ void __init ps3_init_IRQ(void) ppc_md.get_irq = ps3_get_irq; } + +void ps3_shutdown_IRQ(int cpu) +{ + int result; + u64 ppe_id; + u64 thread_id = get_hard_smp_processor_id(cpu); + + lv1_get_logical_ppe_id(&ppe_id); + result = lv1_configure_irq_state_bitmap(ppe_id, thread_id, 0); + + DBG("%s:%d: lv1_configure_irq_state_bitmap (%lu:%lu/%d) %s\n", __func__, + __LINE__, ppe_id, thread_id, cpu, ps3_result(result)); +}