diff options
Diffstat (limited to 'drivers/acpi/pci_link.c')
| -rw-r--r-- | drivers/acpi/pci_link.c | 477 |
1 files changed, 238 insertions, 239 deletions
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index e8334ce84d8..82292b77e5c 100644 --- a/drivers/acpi/pci_link.c +++ b/drivers/acpi/pci_link.c @@ -42,30 +42,26 @@ #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> - #define _COMPONENT ACPI_PCI_COMPONENT -ACPI_MODULE_NAME ("pci_link") - +ACPI_MODULE_NAME("pci_link") #define ACPI_PCI_LINK_CLASS "pci_irq_routing" #define ACPI_PCI_LINK_HID "PNP0C0F" #define ACPI_PCI_LINK_DRIVER_NAME "ACPI PCI Interrupt Link Driver" #define ACPI_PCI_LINK_DEVICE_NAME "PCI Interrupt Link" #define ACPI_PCI_LINK_FILE_INFO "info" #define ACPI_PCI_LINK_FILE_STATUS "state" - #define ACPI_PCI_LINK_MAX_POSSIBLE 16 - -static int acpi_pci_link_add (struct acpi_device *device); -static int acpi_pci_link_remove (struct acpi_device *device, int type); +static int acpi_pci_link_add(struct acpi_device *device); +static int acpi_pci_link_remove(struct acpi_device *device, int type); static struct acpi_driver acpi_pci_link_driver = { - .name = ACPI_PCI_LINK_DRIVER_NAME, - .class = ACPI_PCI_LINK_CLASS, - .ids = ACPI_PCI_LINK_HID, - .ops = { - .add = acpi_pci_link_add, - .remove = acpi_pci_link_remove, - }, + .name = ACPI_PCI_LINK_DRIVER_NAME, + .class = ACPI_PCI_LINK_CLASS, + .ids = ACPI_PCI_LINK_HID, + .ops = { + .add = acpi_pci_link_add, + .remove = acpi_pci_link_remove, + }, }; /* @@ -73,31 +69,30 @@ static struct acpi_driver acpi_pci_link_driver = { * later even the link is disable. Instead, we just repick the active irq */ struct acpi_pci_link_irq { - u8 active; /* Current IRQ */ - u8 edge_level; /* All IRQs */ - u8 active_high_low; /* All IRQs */ - u8 resource_type; - u8 possible_count; - u8 possible[ACPI_PCI_LINK_MAX_POSSIBLE]; - u8 initialized:1; - u8 reserved:7; + u8 active; /* Current IRQ */ + u8 edge_level; /* All IRQs */ + u8 active_high_low; /* All IRQs */ + u8 resource_type; + u8 possible_count; + u8 possible[ACPI_PCI_LINK_MAX_POSSIBLE]; + u8 initialized:1; + u8 reserved:7; }; struct acpi_pci_link { - struct list_head node; - struct acpi_device *device; - acpi_handle handle; + struct list_head node; + struct acpi_device *device; + acpi_handle handle; struct acpi_pci_link_irq irq; - int refcnt; + int refcnt; }; static struct { - int count; - struct list_head entries; -} acpi_link; + int count; + struct list_head entries; +} acpi_link; DECLARE_MUTEX(acpi_link_lock); - /* -------------------------------------------------------------------------- PCI Link Device Management -------------------------------------------------------------------------- */ @@ -106,12 +101,10 @@ DECLARE_MUTEX(acpi_link_lock); * set context (link) possible list from resource list */ static acpi_status -acpi_pci_link_check_possible ( - struct acpi_resource *resource, - void *context) +acpi_pci_link_check_possible(struct acpi_resource *resource, void *context) { - struct acpi_pci_link *link = (struct acpi_pci_link *) context; - u32 i = 0; + struct acpi_pci_link *link = (struct acpi_pci_link *)context; + u32 i = 0; ACPI_FUNCTION_TRACE("acpi_pci_link_check_possible"); @@ -119,61 +112,68 @@ acpi_pci_link_check_possible ( case ACPI_RSTYPE_START_DPF: return_ACPI_STATUS(AE_OK); case ACPI_RSTYPE_IRQ: - { - struct acpi_resource_irq *p = &resource->data.irq; - if (!p || !p->number_of_interrupts) { - ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Blank IRQ resource\n")); - return_ACPI_STATUS(AE_OK); - } - for (i = 0; (i<p->number_of_interrupts && i<ACPI_PCI_LINK_MAX_POSSIBLE); i++) { - if (!p->interrupts[i]) { - ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid IRQ %d\n", p->interrupts[i])); - continue; + { + struct acpi_resource_irq *p = &resource->data.irq; + if (!p || !p->number_of_interrupts) { + ACPI_DEBUG_PRINT((ACPI_DB_WARN, + "Blank IRQ resource\n")); + return_ACPI_STATUS(AE_OK); } - link->irq.possible[i] = p->interrupts[i]; - link->irq.possible_count++; + for (i = 0; + (i < p->number_of_interrupts + && i < ACPI_PCI_LINK_MAX_POSSIBLE); i++) { + if (!p->interrupts[i]) { + ACPI_DEBUG_PRINT((ACPI_DB_WARN, + "Invalid IRQ %d\n", + p->interrupts[i])); + continue; + } + link->irq.possible[i] = p->interrupts[i]; + link->irq.possible_count++; + } + link->irq.edge_level = p->edge_level; + link->irq.active_high_low = p->active_high_low; + link->irq.resource_type = ACPI_RSTYPE_IRQ; + break; } - link->irq.edge_level = p->edge_level; - link->irq.active_high_low = p->active_high_low; - link->irq.resource_type = ACPI_RSTYPE_IRQ; - break; - } case ACPI_RSTYPE_EXT_IRQ: - { - struct acpi_resource_ext_irq *p = &resource->data.extended_irq; - if (!p || !p->number_of_interrupts) { - ACPI_DEBUG_PRINT((ACPI_DB_WARN, - "Blank EXT IRQ resource\n")); - return_ACPI_STATUS(AE_OK); - } - for (i = 0; (i<p->number_of_interrupts && i<ACPI_PCI_LINK_MAX_POSSIBLE); i++) { - if (!p->interrupts[i]) { - ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid IRQ %d\n", p->interrupts[i])); - continue; + { + struct acpi_resource_ext_irq *p = + &resource->data.extended_irq; + if (!p || !p->number_of_interrupts) { + ACPI_DEBUG_PRINT((ACPI_DB_WARN, + "Blank EXT IRQ resource\n")); + return_ACPI_STATUS(AE_OK); + } + for (i = 0; + (i < p->number_of_interrupts + && i < ACPI_PCI_LINK_MAX_POSSIBLE); i++) { + if (!p->interrupts[i]) { + ACPI_DEBUG_PRINT((ACPI_DB_WARN, + "Invalid IRQ %d\n", + p->interrupts[i])); + continue; + } + link->irq.possible[i] = p->interrupts[i]; + link->irq.possible_count++; } - link->irq.possible[i] = p->interrupts[i]; - link->irq.possible_count++; + link->irq.edge_level = p->edge_level; + link->irq.active_high_low = p->active_high_low; + link->irq.resource_type = ACPI_RSTYPE_EXT_IRQ; + break; } - link->irq.edge_level = p->edge_level; - link->irq.active_high_low = p->active_high_low; - link->irq.resource_type = ACPI_RSTYPE_EXT_IRQ; - break; - } default: - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Resource is not an IRQ entry\n")); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Resource is not an IRQ entry\n")); return_ACPI_STATUS(AE_OK); } return_ACPI_STATUS(AE_CTRL_TERMINATE); } - -static int -acpi_pci_link_get_possible ( - struct acpi_pci_link *link) +static int acpi_pci_link_get_possible(struct acpi_pci_link *link) { - acpi_status status; + acpi_status status; ACPI_FUNCTION_TRACE("acpi_pci_link_get_possible"); @@ -181,62 +181,60 @@ acpi_pci_link_get_possible ( return_VALUE(-EINVAL); status = acpi_walk_resources(link->handle, METHOD_NAME__PRS, - acpi_pci_link_check_possible, link); + acpi_pci_link_check_possible, link); if (ACPI_FAILURE(status)) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _PRS\n")); return_VALUE(-ENODEV); } - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Found %d possible IRQs\n", link->irq.possible_count)); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Found %d possible IRQs\n", + link->irq.possible_count)); return_VALUE(0); } - static acpi_status -acpi_pci_link_check_current ( - struct acpi_resource *resource, - void *context) +acpi_pci_link_check_current(struct acpi_resource *resource, void *context) { - int *irq = (int *) context; + int *irq = (int *)context; ACPI_FUNCTION_TRACE("acpi_pci_link_check_current"); switch (resource->id) { case ACPI_RSTYPE_IRQ: - { - struct acpi_resource_irq *p = &resource->data.irq; - if (!p || !p->number_of_interrupts) { - /* - * IRQ descriptors may have no IRQ# bits set, - * particularly those those w/ _STA disabled - */ - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Blank IRQ resource\n")); - return_ACPI_STATUS(AE_OK); + { + struct acpi_resource_irq *p = &resource->data.irq; + if (!p || !p->number_of_interrupts) { + /* + * IRQ descriptors may have no IRQ# bits set, + * particularly those those w/ _STA disabled + */ + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Blank IRQ resource\n")); + return_ACPI_STATUS(AE_OK); + } + *irq = p->interrupts[0]; + break; } - *irq = p->interrupts[0]; - break; - } case ACPI_RSTYPE_EXT_IRQ: - { - struct acpi_resource_ext_irq *p = &resource->data.extended_irq; - if (!p || !p->number_of_interrupts) { - /* - * extended IRQ descriptors must - * return at least 1 IRQ - */ - ACPI_DEBUG_PRINT((ACPI_DB_WARN, - "Blank EXT IRQ resource\n")); - return_ACPI_STATUS(AE_OK); + { + struct acpi_resource_ext_irq *p = + &resource->data.extended_irq; + if (!p || !p->number_of_interrupts) { + /* + * extended IRQ descriptors must + * return at least 1 IRQ + */ + ACPI_DEBUG_PRINT((ACPI_DB_WARN, + "Blank EXT IRQ resource\n")); + return_ACPI_STATUS(AE_OK); + } + *irq = p->interrupts[0]; + break; } - *irq = p->interrupts[0]; - break; - } default: - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Resource isn't an IRQ\n")); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Resource isn't an IRQ\n")); return_ACPI_STATUS(AE_OK); } return_ACPI_STATUS(AE_CTRL_TERMINATE); @@ -249,13 +247,11 @@ acpi_pci_link_check_current ( * 0 - success * !0 - failure */ -static int -acpi_pci_link_get_current ( - struct acpi_pci_link *link) +static int acpi_pci_link_get_current(struct acpi_pci_link *link) { - int result = 0; - acpi_status status = AE_OK; - int irq = 0; + int result = 0; + acpi_status status = AE_OK; + int irq = 0; ACPI_FUNCTION_TRACE("acpi_pci_link_get_current"); @@ -269,7 +265,8 @@ acpi_pci_link_get_current ( /* Query _STA, set link->device->status */ result = acpi_bus_get_status(link->device); if (result) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to read status\n")); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Unable to read status\n")); goto end; } @@ -284,7 +281,7 @@ acpi_pci_link_get_current ( */ status = acpi_walk_resources(link->handle, METHOD_NAME__CRS, - acpi_pci_link_check_current, &irq); + acpi_pci_link_check_current, &irq); if (ACPI_FAILURE(status)) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _CRS\n")); result = -ENODEV; @@ -300,58 +297,61 @@ acpi_pci_link_get_current ( ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Link at IRQ %d \n", link->irq.active)); -end: + end: return_VALUE(result); } -static int -acpi_pci_link_set ( - struct acpi_pci_link *link, - int irq) +static int acpi_pci_link_set(struct acpi_pci_link *link, int irq) { - int result = 0; - acpi_status status = AE_OK; + int result = 0; + acpi_status status = AE_OK; struct { - struct acpi_resource res; - struct acpi_resource end; - } *resource; - struct acpi_buffer buffer = {0, NULL}; + struct acpi_resource res; + struct acpi_resource end; + } *resource; + struct acpi_buffer buffer = { 0, NULL }; ACPI_FUNCTION_TRACE("acpi_pci_link_set"); if (!link || !irq) return_VALUE(-EINVAL); - resource = kmalloc( sizeof(*resource)+1, GFP_KERNEL); - if(!resource) + resource = kmalloc(sizeof(*resource) + 1, GFP_KERNEL); + if (!resource) return_VALUE(-ENOMEM); - memset(resource, 0, sizeof(*resource)+1); - buffer.length = sizeof(*resource) +1; + memset(resource, 0, sizeof(*resource) + 1); + buffer.length = sizeof(*resource) + 1; buffer.pointer = resource; - switch(link->irq.resource_type) { + switch (link->irq.resource_type) { case ACPI_RSTYPE_IRQ: resource->res.id = ACPI_RSTYPE_IRQ; resource->res.length = sizeof(struct acpi_resource); resource->res.data.irq.edge_level = link->irq.edge_level; - resource->res.data.irq.active_high_low = link->irq.active_high_low; + resource->res.data.irq.active_high_low = + link->irq.active_high_low; if (link->irq.edge_level == ACPI_EDGE_SENSITIVE) - resource->res.data.irq.shared_exclusive = ACPI_EXCLUSIVE; + resource->res.data.irq.shared_exclusive = + ACPI_EXCLUSIVE; else resource->res.data.irq.shared_exclusive = ACPI_SHARED; resource->res.data.irq.number_of_interrupts = 1; resource->res.data.irq.interrupts[0] = irq; break; - + case ACPI_RSTYPE_EXT_IRQ: resource->res.id = ACPI_RSTYPE_EXT_IRQ; resource->res.length = sizeof(struct acpi_resource); - resource->res.data.extended_irq.producer_consumer = ACPI_CONSUMER; - resource->res.data.extended_irq.edge_level = link->irq.edge_level; - resource->res.data.extended_irq.active_high_low = link->irq.active_high_low; + resource->res.data.extended_irq.producer_consumer = + ACPI_CONSUMER; + resource->res.data.extended_irq.edge_level = + link->irq.edge_level; + resource->res.data.extended_irq.active_high_low = + link->irq.active_high_low; if (link->irq.edge_level == ACPI_EDGE_SENSITIVE) - resource->res.data.irq.shared_exclusive = ACPI_EXCLUSIVE; + resource->res.data.irq.shared_exclusive = + ACPI_EXCLUSIVE; else resource->res.data.irq.shared_exclusive = ACPI_SHARED; resource->res.data.extended_irq.number_of_interrupts = 1; @@ -384,9 +384,9 @@ acpi_pci_link_set ( } if (!link->device->status.enabled) { printk(KERN_WARNING PREFIX - "%s [%s] disabled and referenced, BIOS bug.\n", - acpi_device_name(link->device), - acpi_device_bid(link->device)); + "%s [%s] disabled and referenced, BIOS bug.\n", + acpi_device_name(link->device), + acpi_device_bid(link->device)); } /* Query _CRS, set link->irq.active */ @@ -404,22 +404,20 @@ acpi_pci_link_set ( * policy: when _CRS doesn't return what we just _SRS * assume _SRS worked and override _CRS value. */ - printk(KERN_WARNING PREFIX - "%s [%s] BIOS reported IRQ %d, using IRQ %d\n", - acpi_device_name(link->device), - acpi_device_bid(link->device), - link->irq.active, irq); + printk(KERN_WARNING PREFIX + "%s [%s] BIOS reported IRQ %d, using IRQ %d\n", + acpi_device_name(link->device), + acpi_device_bid(link->device), link->irq.active, irq); link->irq.active = irq; } ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Set IRQ %d\n", link->irq.active)); - -end: + + end: kfree(resource); return_VALUE(result); } - /* -------------------------------------------------------------------------- PCI Link IRQ Management -------------------------------------------------------------------------- */ @@ -469,8 +467,8 @@ static int acpi_irq_penalty[ACPI_MAX_IRQS] = { PIRQ_PENALTY_ISA_ALWAYS, /* IRQ0 timer */ PIRQ_PENALTY_ISA_ALWAYS, /* IRQ1 keyboard */ PIRQ_PENALTY_ISA_ALWAYS, /* IRQ2 cascade */ - PIRQ_PENALTY_ISA_TYPICAL, /* IRQ3 serial */ - PIRQ_PENALTY_ISA_TYPICAL, /* IRQ4 serial */ + PIRQ_PENALTY_ISA_TYPICAL, /* IRQ3 serial */ + PIRQ_PENALTY_ISA_TYPICAL, /* IRQ4 serial */ PIRQ_PENALTY_ISA_TYPICAL, /* IRQ5 sometimes SoundBlaster */ PIRQ_PENALTY_ISA_TYPICAL, /* IRQ6 */ PIRQ_PENALTY_ISA_TYPICAL, /* IRQ7 parallel, spurious */ @@ -482,15 +480,14 @@ static int acpi_irq_penalty[ACPI_MAX_IRQS] = { PIRQ_PENALTY_ISA_USED, /* IRQ13 fpe, sometimes */ PIRQ_PENALTY_ISA_USED, /* IRQ14 ide0 */ PIRQ_PENALTY_ISA_USED, /* IRQ15 ide1 */ - /* >IRQ15 */ + /* >IRQ15 */ }; -int __init -acpi_irq_penalty_init(void) +int __init acpi_irq_penalty_init(void) { - struct list_head *node = NULL; - struct acpi_pci_link *link = NULL; - int i = 0; + struct list_head *node = NULL; + struct acpi_pci_link *link = NULL; + int i = 0; ACPI_FUNCTION_TRACE("acpi_irq_penalty_init"); @@ -501,7 +498,8 @@ acpi_irq_penalty_init(void) link = list_entry(node, struct acpi_pci_link, node); if (!link) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid link context\n")); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Invalid link context\n")); continue; } @@ -510,15 +508,20 @@ acpi_irq_penalty_init(void) * useful for breaking ties. */ if (link->irq.possible_count) { - int penalty = PIRQ_PENALTY_PCI_POSSIBLE / link->irq.possible_count; + int penalty = + PIRQ_PENALTY_PCI_POSSIBLE / + link->irq.possible_count; for (i = 0; i < link->irq.possible_count; i++) { if (link->irq.possible[i] < ACPI_MAX_ISA_IRQ) - acpi_irq_penalty[link->irq.possible[i]] += penalty; + acpi_irq_penalty[link->irq. + possible[i]] += + penalty; } } else if (link->irq.active) { - acpi_irq_penalty[link->irq.active] += PIRQ_PENALTY_PCI_POSSIBLE; + acpi_irq_penalty[link->irq.active] += + PIRQ_PENALTY_PCI_POSSIBLE; } } /* Add a penalty for the SCI */ @@ -529,10 +532,10 @@ acpi_irq_penalty_init(void) static int acpi_irq_balance; /* 0: static, 1: balance */ -static int acpi_pci_link_allocate(struct acpi_pci_link *link) +static int acpi_pci_link_allocate(struct acpi_pci_link *link) { - int irq; - int i; + int irq; + int i; ACPI_FUNCTION_TRACE("acpi_pci_link_allocate"); @@ -556,7 +559,7 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link) if (i == link->irq.possible_count) { if (acpi_strict) printk(KERN_WARNING PREFIX "_CRS %d not found" - " in _PRS\n", link->irq.active); + " in _PRS\n", link->irq.active); link->irq.active = 0; } @@ -575,23 +578,25 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link) * the use of IRQs 9, 10, 11, and >15. */ for (i = (link->irq.possible_count - 1); i >= 0; i--) { - if (acpi_irq_penalty[irq] > acpi_irq_penalty[link->irq.possible[i]]) + if (acpi_irq_penalty[irq] > + acpi_irq_penalty[link->irq.possible[i]]) irq = link->irq.possible[i]; } } /* Attempt to enable the link device at this IRQ. */ if (acpi_pci_link_set(link, irq)) { - printk(PREFIX "Unable to set IRQ for %s [%s] (likely buggy ACPI BIOS).\n" - "Try pci=noacpi or acpi=off\n", - acpi_device_name(link->device), - acpi_device_bid(link->device)); + printk(PREFIX + "Unable to set IRQ for %s [%s] (likely buggy ACPI BIOS).\n" + "Try pci=noacpi or acpi=off\n", + acpi_device_name(link->device), + acpi_device_bid(link->device)); return_VALUE(-ENODEV); } else { acpi_irq_penalty[link->irq.active] += PIRQ_PENALTY_PCI_USING; - printk(PREFIX "%s [%s] enabled at IRQ %d\n", - acpi_device_name(link->device), - acpi_device_bid(link->device), link->irq.active); + printk(PREFIX "%s [%s] enabled at IRQ %d\n", + acpi_device_name(link->device), + acpi_device_bid(link->device), link->irq.active); } link->irq.initialized = 1; @@ -606,16 +611,13 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link) */ int -acpi_pci_link_allocate_irq ( - acpi_handle handle, - int index, - int *edge_level, - int *active_high_low, - char **name) +acpi_pci_link_allocate_irq(acpi_handle handle, + int index, + int *edge_level, int *active_high_low, char **name) { - int result = 0; - struct acpi_device *device = NULL; - struct acpi_pci_link *link = NULL; + int result = 0; + struct acpi_device *device = NULL; + struct acpi_pci_link *link = NULL; ACPI_FUNCTION_TRACE("acpi_pci_link_allocate_irq"); @@ -625,7 +627,7 @@ acpi_pci_link_allocate_irq ( return_VALUE(-1); } - link = (struct acpi_pci_link *) acpi_driver_data(device); + link = (struct acpi_pci_link *)acpi_driver_data(device); if (!link) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid link context\n")); return_VALUE(-1); @@ -642,20 +644,24 @@ acpi_pci_link_allocate_irq ( up(&acpi_link_lock); return_VALUE(-1); } - + if (!link->irq.active) { up(&acpi_link_lock); ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Link active IRQ is 0!\n")); return_VALUE(-1); } - link->refcnt ++; + link->refcnt++; up(&acpi_link_lock); - if (edge_level) *edge_level = link->irq.edge_level; - if (active_high_low) *active_high_low = link->irq.active_high_low; - if (name) *name = acpi_device_bid(link->device); + if (edge_level) + *edge_level = link->irq.edge_level; + if (active_high_low) + *active_high_low = link->irq.active_high_low; + if (name) + *name = acpi_device_bid(link->device); ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Link %s is referenced\n", acpi_device_bid(link->device))); + "Link %s is referenced\n", + acpi_device_bid(link->device))); return_VALUE(link->irq.active); } @@ -663,12 +669,11 @@ acpi_pci_link_allocate_irq ( * We don't change link's irq information here. After it is reenabled, we * continue use the info */ -int -acpi_pci_link_free_irq(acpi_handle handle) +int acpi_pci_link_free_irq(acpi_handle handle) { - struct acpi_device *device = NULL; - struct acpi_pci_link *link = NULL; - acpi_status result; + struct acpi_device *device = NULL; + struct acpi_pci_link *link = NULL; + acpi_status result; ACPI_FUNCTION_TRACE("acpi_pci_link_free_irq"); @@ -678,7 +683,7 @@ acpi_pci_link_free_irq(acpi_handle handle) return_VALUE(-1); } - link = (struct acpi_pci_link *) acpi_driver_data(device); + link = (struct acpi_pci_link *)acpi_driver_data(device); if (!link) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid link context\n")); return_VALUE(-1); @@ -690,7 +695,6 @@ acpi_pci_link_free_irq(acpi_handle handle) ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Link isn't initialized\n")); return_VALUE(-1); } - #ifdef FUTURE_USE /* * The Link reference count allows us to _DISable an unused link @@ -701,10 +705,11 @@ acpi_pci_link_free_irq(acpi_handle handle) * to prevent duplicate acpi_pci_link_set() * which would harm some systems */ - link->refcnt --; + link->refcnt--; #endif ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Link %s is dereferenced\n", acpi_device_bid(link->device))); + "Link %s is dereferenced\n", + acpi_device_bid(link->device))); if (link->refcnt == 0) { acpi_ut_evaluate_object(link->handle, "_DIS", 0, NULL); @@ -712,17 +717,17 @@ acpi_pci_link_free_irq(acpi_handle handle) up(&acpi_link_lock); return_VALUE(link->irq.active); } + /* -------------------------------------------------------------------------- Driver Interface -------------------------------------------------------------------------- */ -static int -acpi_pci_link_add(struct acpi_device *device) +static int acpi_pci_link_add(struct acpi_device *device) { - int result = 0; - struct acpi_pci_link *link = NULL; - int i = 0; - int found = 0; + int result = 0; + struct acpi_pci_link *link = NULL; + int i = 0; + int found = 0; ACPI_FUNCTION_TRACE("acpi_pci_link_add"); @@ -749,13 +754,12 @@ acpi_pci_link_add(struct acpi_device *device) acpi_pci_link_get_current(link); printk(PREFIX "%s [%s] (IRQs", acpi_device_name(device), - acpi_device_bid(device)); + acpi_device_bid(device)); for (i = 0; i < link->irq.possible_count; i++) { if (link->irq.active == link->irq.possible[i]) { printk(" *%d", link->irq.possible[i]); found = 1; - } - else + } else printk(" %d", link->irq.possible[i]); } @@ -764,7 +768,7 @@ acpi_pci_link_add(struct acpi_device *device) if (!found) printk(" *%d", link->irq.active); - if(!link->device->status.enabled) + if (!link->device->status.enabled) printk(", disabled."); printk("\n"); @@ -773,7 +777,7 @@ acpi_pci_link_add(struct acpi_device *device) list_add_tail(&link->node, &acpi_link.entries); acpi_link.count++; -end: + end: /* disable all links -- to be activated on use */ acpi_ut_evaluate_object(link->handle, "_DIS", 0, NULL); up(&acpi_link_lock); @@ -784,9 +788,7 @@ end: return_VALUE(result); } -static int -acpi_pci_link_resume( - struct acpi_pci_link *link) +static int acpi_pci_link_resume(struct acpi_pci_link *link) { ACPI_FUNCTION_TRACE("acpi_pci_link_resume"); @@ -801,11 +803,10 @@ acpi_pci_link_resume( * after every device calls pci_disable_device in .resume. */ int acpi_in_resume; -static int -irqrouter_resume(struct sys_device *dev) +static int irqrouter_resume(struct sys_device *dev) { - struct list_head *node = NULL; - struct acpi_pci_link *link = NULL; + struct list_head *node = NULL; + struct acpi_pci_link *link = NULL; ACPI_FUNCTION_TRACE("irqrouter_resume"); @@ -814,7 +815,7 @@ irqrouter_resume(struct sys_device *dev) link = list_entry(node, struct acpi_pci_link, node); if (!link) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Invalid link context\n")); + "Invalid link context\n")); continue; } acpi_pci_link_resume(link); @@ -823,9 +824,7 @@ irqrouter_resume(struct sys_device *dev) return_VALUE(0); } - -static int -acpi_pci_link_remove(struct acpi_device *device, int type) +static int acpi_pci_link_remove(struct acpi_device *device, int type) { struct acpi_pci_link *link = NULL; @@ -834,7 +833,7 @@ acpi_pci_link_remove(struct acpi_device *device, int type) if (!device || !acpi_driver_data(device)) return_VALUE(-EINVAL); - link = (struct acpi_pci_link *) acpi_driver_data(device); + link = (struct acpi_pci_link *)acpi_driver_data(device); down(&acpi_link_lock); list_del(&link->node); @@ -856,14 +855,14 @@ static int __init acpi_irq_penalty_update(char *str, int used) int retval; int irq; - retval = get_option(&str,&irq); + retval = get_option(&str, &irq); if (!retval) break; /* no number found */ if (irq < 0) continue; - + if (irq >= ACPI_MAX_IRQS) continue; @@ -902,6 +901,7 @@ static int __init acpi_irq_isa(char *str) { return acpi_irq_penalty_update(str, 1); } + __setup("acpi_irq_isa=", acpi_irq_isa); /* @@ -913,6 +913,7 @@ static int __init acpi_irq_pci(char *str) { return acpi_irq_penalty_update(str, 0); } + __setup("acpi_irq_pci=", acpi_irq_pci); static int __init acpi_irq_nobalance_set(char *str) @@ -920,6 +921,7 @@ static int __init acpi_irq_nobalance_set(char *str) acpi_irq_balance = 0; return 1; } + __setup("acpi_irq_nobalance", acpi_irq_nobalance_set); int __init acpi_irq_balance_set(char *str) @@ -927,22 +929,20 @@ int __init acpi_irq_balance_set(char *str) acpi_irq_balance = 1; return 1; } -__setup("acpi_irq_balance", acpi_irq_balance_set); +__setup("acpi_irq_balance", acpi_irq_balance_set); /* FIXME: we will remove this interface after all drivers call pci_disable_device */ static struct sysdev_class irqrouter_sysdev_class = { - set_kset_name("irqrouter"), - .resume = irqrouter_resume, + set_kset_name("irqrouter"), + .resume = irqrouter_resume, }; - static struct sys_device device_irqrouter = { - .id = 0, - .cls = &irqrouter_sysdev_class, + .id = 0, + .cls = &irqrouter_sysdev_class, }; - static int __init irqrouter_init_sysfs(void) { int error; @@ -957,12 +957,11 @@ static int __init irqrouter_init_sysfs(void) error = sysdev_register(&device_irqrouter); return_VALUE(error); -} +} device_initcall(irqrouter_init_sysfs); - -static int __init acpi_pci_link_init (void) +static int __init acpi_pci_link_init(void) { ACPI_FUNCTION_TRACE("acpi_pci_link_init"); |