diff options
author | David Woodhouse <David.Woodhouse@intel.com> | 2008-07-25 18:40:14 +0400 |
---|---|---|
committer | David Woodhouse <David.Woodhouse@intel.com> | 2008-07-25 18:40:14 +0400 |
commit | ff877ea80efa2015b6263766f78ee42c2a1b32f9 (patch) | |
tree | 85205005c611ab774702148558321c6fb92f1ccd /arch/x86/pci/irq.c | |
parent | 30821fee4f0cb3e6d241d9f7ddc37742212e3eb7 (diff) | |
parent | d37e6bf68fc1eb34a4ad21d9ae8890ed37ea80e7 (diff) | |
download | linux-ff877ea80efa2015b6263766f78ee42c2a1b32f9.tar.xz |
Merge branch 'linux-next' of git://git.infradead.org/~dedekind/ubi-2.6
Diffstat (limited to 'arch/x86/pci/irq.c')
-rw-r--r-- | arch/x86/pci/irq.c | 386 |
1 files changed, 208 insertions, 178 deletions
diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c index ca8df9c260bc..6a06a2eb0597 100644 --- a/arch/x86/pci/irq.c +++ b/arch/x86/pci/irq.c @@ -11,8 +11,8 @@ #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/dmi.h> -#include <asm/io.h> -#include <asm/smp.h> +#include <linux/io.h> +#include <linux/smp.h> #include <asm/io_apic.h> #include <linux/irq.h> #include <linux/acpi.h> @@ -45,7 +45,8 @@ struct irq_router { char *name; u16 vendor, device; int (*get)(struct pci_dev *router, struct pci_dev *dev, int pirq); - int (*set)(struct pci_dev *router, struct pci_dev *dev, int pirq, int new); + int (*set)(struct pci_dev *router, struct pci_dev *dev, int pirq, + int new); }; struct irq_router_handler { @@ -61,7 +62,7 @@ void (*pcibios_disable_irq)(struct pci_dev *dev) = NULL; * and perform checksum verification. */ -static inline struct irq_routing_table * pirq_check_routing_table(u8 *addr) +static inline struct irq_routing_table *pirq_check_routing_table(u8 *addr) { struct irq_routing_table *rt; int i; @@ -74,10 +75,11 @@ static inline struct irq_routing_table * pirq_check_routing_table(u8 *addr) rt->size < sizeof(struct irq_routing_table)) return NULL; sum = 0; - for (i=0; i < rt->size; i++) + for (i = 0; i < rt->size; i++) sum += addr[i]; if (!sum) { - DBG(KERN_DEBUG "PCI: Interrupt Routing Table found at 0x%p\n", rt); + DBG(KERN_DEBUG "PCI: Interrupt Routing Table found at 0x%p\n", + rt); return rt; } return NULL; @@ -100,7 +102,7 @@ static struct irq_routing_table * __init pirq_find_routing_table(void) return rt; printk(KERN_WARNING "PCI: PIRQ table NOT found at pirqaddr\n"); } - for(addr = (u8 *) __va(0xf0000); addr < (u8 *) __va(0x100000); addr += 16) { + for (addr = (u8 *) __va(0xf0000); addr < (u8 *) __va(0x100000); addr += 16) { rt = pirq_check_routing_table(addr); if (rt) return rt; @@ -122,20 +124,20 @@ static void __init pirq_peer_trick(void) struct irq_info *e; memset(busmap, 0, sizeof(busmap)); - for(i=0; i < (rt->size - sizeof(struct irq_routing_table)) / sizeof(struct irq_info); i++) { + for (i = 0; i < (rt->size - sizeof(struct irq_routing_table)) / sizeof(struct irq_info); i++) { e = &rt->slots[i]; #ifdef DEBUG { int j; DBG(KERN_DEBUG "%02x:%02x slot=%02x", e->bus, e->devfn/8, e->slot); - for(j=0; j<4; j++) + for (j = 0; j < 4; j++) DBG(" %d:%02x/%04x", j, e->irq[j].link, e->irq[j].bitmap); DBG("\n"); } #endif busmap[e->bus] = 1; } - for(i = 1; i < 256; i++) { + for (i = 1; i < 256; i++) { int node; if (!busmap[i] || pci_find_bus(0, i)) continue; @@ -183,7 +185,8 @@ static unsigned int read_config_nybble(struct pci_dev *router, unsigned offset, return (nr & 1) ? (x >> 4) : (x & 0xf); } -static void write_config_nybble(struct pci_dev *router, unsigned offset, unsigned nr, unsigned int val) +static void write_config_nybble(struct pci_dev *router, unsigned offset, + unsigned nr, unsigned int val) { u8 x; unsigned reg = offset + (nr >> 1); @@ -285,7 +288,7 @@ static int pirq_ite_get(struct pci_dev *router, struct pci_dev *dev, int pirq) static const unsigned char pirqmap[4] = { 1, 0, 2, 3 }; WARN_ON_ONCE(pirq > 4); - return read_config_nybble(router,0x43, pirqmap[pirq-1]); + return read_config_nybble(router, 0x43, pirqmap[pirq-1]); } static int pirq_ite_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq) @@ -314,7 +317,7 @@ static int pirq_opti_set(struct pci_dev *router, struct pci_dev *dev, int pirq, /* * Cyrix: nibble offset 0x5C - * 0x5C bits 7:4 is INTB bits 3:0 is INTA + * 0x5C bits 7:4 is INTB bits 3:0 is INTA * 0x5D bits 7:4 is INTD bits 3:0 is INTC */ static int pirq_cyrix_get(struct pci_dev *router, struct pci_dev *dev, int pirq) @@ -350,7 +353,7 @@ static int pirq_cyrix_set(struct pci_dev *router, struct pci_dev *dev, int pirq, * Apparently there are systems implementing PCI routing table using * link values 0x01-0x04 and others using 0x41-0x44 for PCI INTA..D. * We try our best to handle both link mappings. - * + * * Currently (2003-05-21) it appears most SiS chipsets follow the * definition of routing registers from the SiS-5595 southbridge. * According to the SiS 5595 datasheets the revision id's of the @@ -370,7 +373,7 @@ static int pirq_cyrix_set(struct pci_dev *router, struct pci_dev *dev, int pirq, * * 0x62: USBIRQ: * bit 6 OHCI function disabled (0), enabled (1) - * + * * 0x6a: ACPI/SCI IRQ: bits 4-6 reserved * * 0x7e: Data Acq. Module IRQ - bits 4-6 reserved @@ -467,7 +470,8 @@ static int pirq_serverworks_get(struct pci_dev *router, struct pci_dev *dev, int return inb(0xc01) & 0xf; } -static int pirq_serverworks_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq) +static int pirq_serverworks_set(struct pci_dev *router, struct pci_dev *dev, + int pirq, int irq) { outb(pirq, 0xc00); outb(irq, 0xc01); @@ -487,9 +491,7 @@ static int pirq_amd756_get(struct pci_dev *router, struct pci_dev *dev, int pirq u8 irq; irq = 0; if (pirq <= 4) - { irq = read_config_nybble(router, 0x56, pirq - 1); - } printk(KERN_INFO "AMD756: dev %04x:%04x, router pirq : %d get irq : %2d\n", dev->vendor, dev->device, pirq, irq); return irq; @@ -497,12 +499,10 @@ static int pirq_amd756_get(struct pci_dev *router, struct pci_dev *dev, int pirq static int pirq_amd756_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq) { - printk(KERN_INFO "AMD756: dev %04x:%04x, router pirq : %d SET irq : %2d\n", + printk(KERN_INFO "AMD756: dev %04x:%04x, router pirq : %d SET irq : %2d\n", dev->vendor, dev->device, pirq, irq); if (pirq <= 4) - { write_config_nybble(router, 0x56, pirq - 1, irq); - } return 1; } @@ -549,50 +549,49 @@ static __init int intel_router_probe(struct irq_router *r, struct pci_dev *route if (pci_dev_present(pirq_440gx)) return 0; - switch(device) - { - case PCI_DEVICE_ID_INTEL_82371FB_0: - case PCI_DEVICE_ID_INTEL_82371SB_0: - case PCI_DEVICE_ID_INTEL_82371AB_0: - case PCI_DEVICE_ID_INTEL_82371MX: - case PCI_DEVICE_ID_INTEL_82443MX_0: - case PCI_DEVICE_ID_INTEL_82801AA_0: - case PCI_DEVICE_ID_INTEL_82801AB_0: - case PCI_DEVICE_ID_INTEL_82801BA_0: - case PCI_DEVICE_ID_INTEL_82801BA_10: - case PCI_DEVICE_ID_INTEL_82801CA_0: - case PCI_DEVICE_ID_INTEL_82801CA_12: - case PCI_DEVICE_ID_INTEL_82801DB_0: - case PCI_DEVICE_ID_INTEL_82801E_0: - case PCI_DEVICE_ID_INTEL_82801EB_0: - case PCI_DEVICE_ID_INTEL_ESB_1: - case PCI_DEVICE_ID_INTEL_ICH6_0: - case PCI_DEVICE_ID_INTEL_ICH6_1: - case PCI_DEVICE_ID_INTEL_ICH7_0: - case PCI_DEVICE_ID_INTEL_ICH7_1: - case PCI_DEVICE_ID_INTEL_ICH7_30: - case PCI_DEVICE_ID_INTEL_ICH7_31: - case PCI_DEVICE_ID_INTEL_ESB2_0: - case PCI_DEVICE_ID_INTEL_ICH8_0: - case PCI_DEVICE_ID_INTEL_ICH8_1: - case PCI_DEVICE_ID_INTEL_ICH8_2: - case PCI_DEVICE_ID_INTEL_ICH8_3: - case PCI_DEVICE_ID_INTEL_ICH8_4: - case PCI_DEVICE_ID_INTEL_ICH9_0: - case PCI_DEVICE_ID_INTEL_ICH9_1: - case PCI_DEVICE_ID_INTEL_ICH9_2: - case PCI_DEVICE_ID_INTEL_ICH9_3: - case PCI_DEVICE_ID_INTEL_ICH9_4: - case PCI_DEVICE_ID_INTEL_ICH9_5: - case PCI_DEVICE_ID_INTEL_TOLAPAI_0: - case PCI_DEVICE_ID_INTEL_ICH10_0: - case PCI_DEVICE_ID_INTEL_ICH10_1: - case PCI_DEVICE_ID_INTEL_ICH10_2: - case PCI_DEVICE_ID_INTEL_ICH10_3: - r->name = "PIIX/ICH"; - r->get = pirq_piix_get; - r->set = pirq_piix_set; - return 1; + switch (device) { + case PCI_DEVICE_ID_INTEL_82371FB_0: + case PCI_DEVICE_ID_INTEL_82371SB_0: + case PCI_DEVICE_ID_INTEL_82371AB_0: + case PCI_DEVICE_ID_INTEL_82371MX: + case PCI_DEVICE_ID_INTEL_82443MX_0: + case PCI_DEVICE_ID_INTEL_82801AA_0: + case PCI_DEVICE_ID_INTEL_82801AB_0: + case PCI_DEVICE_ID_INTEL_82801BA_0: + case PCI_DEVICE_ID_INTEL_82801BA_10: + case PCI_DEVICE_ID_INTEL_82801CA_0: + case PCI_DEVICE_ID_INTEL_82801CA_12: + case PCI_DEVICE_ID_INTEL_82801DB_0: + case PCI_DEVICE_ID_INTEL_82801E_0: + case PCI_DEVICE_ID_INTEL_82801EB_0: + case PCI_DEVICE_ID_INTEL_ESB_1: + case PCI_DEVICE_ID_INTEL_ICH6_0: + case PCI_DEVICE_ID_INTEL_ICH6_1: + case PCI_DEVICE_ID_INTEL_ICH7_0: + case PCI_DEVICE_ID_INTEL_ICH7_1: + case PCI_DEVICE_ID_INTEL_ICH7_30: + case PCI_DEVICE_ID_INTEL_ICH7_31: + case PCI_DEVICE_ID_INTEL_ESB2_0: + case PCI_DEVICE_ID_INTEL_ICH8_0: + case PCI_DEVICE_ID_INTEL_ICH8_1: + case PCI_DEVICE_ID_INTEL_ICH8_2: + case PCI_DEVICE_ID_INTEL_ICH8_3: + case PCI_DEVICE_ID_INTEL_ICH8_4: + case PCI_DEVICE_ID_INTEL_ICH9_0: + case PCI_DEVICE_ID_INTEL_ICH9_1: + case PCI_DEVICE_ID_INTEL_ICH9_2: + case PCI_DEVICE_ID_INTEL_ICH9_3: + case PCI_DEVICE_ID_INTEL_ICH9_4: + case PCI_DEVICE_ID_INTEL_ICH9_5: + case PCI_DEVICE_ID_INTEL_TOLAPAI_0: + case PCI_DEVICE_ID_INTEL_ICH10_0: + case PCI_DEVICE_ID_INTEL_ICH10_1: + case PCI_DEVICE_ID_INTEL_ICH10_2: + case PCI_DEVICE_ID_INTEL_ICH10_3: + r->name = "PIIX/ICH"; + r->get = pirq_piix_get; + r->set = pirq_piix_set; + return 1; } return 0; } @@ -606,7 +605,7 @@ static __init int via_router_probe(struct irq_router *r, * workarounds for some buggy BIOSes */ if (device == PCI_DEVICE_ID_VIA_82C586_0) { - switch(router->device) { + switch (router->device) { case PCI_DEVICE_ID_VIA_82C686: /* * Asus k7m bios wrongly reports 82C686A @@ -631,7 +630,7 @@ static __init int via_router_probe(struct irq_router *r, } } - switch(device) { + switch (device) { case PCI_DEVICE_ID_VIA_82C586_0: r->name = "VIA"; r->get = pirq_via586_get; @@ -654,28 +653,27 @@ static __init int via_router_probe(struct irq_router *r, static __init int vlsi_router_probe(struct irq_router *r, struct pci_dev *router, u16 device) { - switch(device) - { - case PCI_DEVICE_ID_VLSI_82C534: - r->name = "VLSI 82C534"; - r->get = pirq_vlsi_get; - r->set = pirq_vlsi_set; - return 1; + switch (device) { + case PCI_DEVICE_ID_VLSI_82C534: + r->name = "VLSI 82C534"; + r->get = pirq_vlsi_get; + r->set = pirq_vlsi_set; + return 1; } return 0; } -static __init int serverworks_router_probe(struct irq_router *r, struct pci_dev *router, u16 device) +static __init int serverworks_router_probe(struct irq_router *r, + struct pci_dev *router, u16 device) { - switch(device) - { - case PCI_DEVICE_ID_SERVERWORKS_OSB4: - case PCI_DEVICE_ID_SERVERWORKS_CSB5: - r->name = "ServerWorks"; - r->get = pirq_serverworks_get; - r->set = pirq_serverworks_set; - return 1; + switch (device) { + case PCI_DEVICE_ID_SERVERWORKS_OSB4: + case PCI_DEVICE_ID_SERVERWORKS_CSB5: + r->name = "ServerWorks"; + r->get = pirq_serverworks_get; + r->set = pirq_serverworks_set; + return 1; } return 0; } @@ -684,7 +682,7 @@ static __init int sis_router_probe(struct irq_router *r, struct pci_dev *router, { if (device != PCI_DEVICE_ID_SI_503) return 0; - + r->name = "SIS"; r->get = pirq_sis_get; r->set = pirq_sis_set; @@ -693,47 +691,43 @@ static __init int sis_router_probe(struct irq_router *r, struct pci_dev *router, static __init int cyrix_router_probe(struct irq_router *r, struct pci_dev *router, u16 device) { - switch(device) - { - case PCI_DEVICE_ID_CYRIX_5520: - r->name = "NatSemi"; - r->get = pirq_cyrix_get; - r->set = pirq_cyrix_set; - return 1; + switch (device) { + case PCI_DEVICE_ID_CYRIX_5520: + r->name = "NatSemi"; + r->get = pirq_cyrix_get; + r->set = pirq_cyrix_set; + return 1; } return 0; } static __init int opti_router_probe(struct irq_router *r, struct pci_dev *router, u16 device) { - switch(device) - { - case PCI_DEVICE_ID_OPTI_82C700: - r->name = "OPTI"; - r->get = pirq_opti_get; - r->set = pirq_opti_set; - return 1; + switch (device) { + case PCI_DEVICE_ID_OPTI_82C700: + r->name = "OPTI"; + r->get = pirq_opti_get; + r->set = pirq_opti_set; + return 1; } return 0; } static __init int ite_router_probe(struct irq_router *r, struct pci_dev *router, u16 device) { - switch(device) - { - case PCI_DEVICE_ID_ITE_IT8330G_0: - r->name = "ITE"; - r->get = pirq_ite_get; - r->set = pirq_ite_set; - return 1; + switch (device) { + case PCI_DEVICE_ID_ITE_IT8330G_0: + r->name = "ITE"; + r->get = pirq_ite_get; + r->set = pirq_ite_set; + return 1; } return 0; } static __init int ali_router_probe(struct irq_router *r, struct pci_dev *router, u16 device) { - switch(device) - { + switch (device) { case PCI_DEVICE_ID_AL_M1533: case PCI_DEVICE_ID_AL_M1563: printk(KERN_DEBUG "PCI: Using ALI IRQ Router\n"); @@ -747,25 +741,24 @@ static __init int ali_router_probe(struct irq_router *r, struct pci_dev *router, static __init int amd_router_probe(struct irq_router *r, struct pci_dev *router, u16 device) { - switch(device) - { - case PCI_DEVICE_ID_AMD_VIPER_740B: - r->name = "AMD756"; - break; - case PCI_DEVICE_ID_AMD_VIPER_7413: - r->name = "AMD766"; - break; - case PCI_DEVICE_ID_AMD_VIPER_7443: - r->name = "AMD768"; - break; - default: - return 0; + switch (device) { + case PCI_DEVICE_ID_AMD_VIPER_740B: + r->name = "AMD756"; + break; + case PCI_DEVICE_ID_AMD_VIPER_7413: + r->name = "AMD766"; + break; + case PCI_DEVICE_ID_AMD_VIPER_7443: + r->name = "AMD768"; + break; + default: + return 0; } r->get = pirq_amd756_get; r->set = pirq_amd756_set; return 1; } - + static __init int pico_router_probe(struct irq_router *r, struct pci_dev *router, u16 device) { switch (device) { @@ -807,7 +800,7 @@ static struct pci_dev *pirq_router_dev; * FIXME: should we have an option to say "generic for * chipset" ? */ - + static void __init pirq_find_router(struct irq_router *r) { struct irq_routing_table *rt = pirq_table; @@ -826,7 +819,7 @@ static void __init pirq_find_router(struct irq_router *r) r->name = "default"; r->get = NULL; r->set = NULL; - + DBG(KERN_DEBUG "PCI: Attempting to find IRQ router for %04x:%04x\n", rt->rtr_vendor, rt->rtr_device); @@ -837,12 +830,14 @@ static void __init pirq_find_router(struct irq_router *r) return; } - for( h = pirq_routers; h->vendor; h++) { + for (h = pirq_routers; h->vendor; h++) { /* First look for a router match */ - if (rt->rtr_vendor == h->vendor && h->probe(r, pirq_router_dev, rt->rtr_device)) + if (rt->rtr_vendor == h->vendor && + h->probe(r, pirq_router_dev, rt->rtr_device)) break; /* Fall back to a device match */ - if (pirq_router_dev->vendor == h->vendor && h->probe(r, pirq_router_dev, pirq_router_dev->device)) + if (pirq_router_dev->vendor == h->vendor && + h->probe(r, pirq_router_dev, pirq_router_dev->device)) break; } printk(KERN_INFO "PCI: Using IRQ router %s [%04x/%04x] at %s\n", @@ -857,11 +852,13 @@ static void __init pirq_find_router(struct irq_router *r) static struct irq_info *pirq_get_info(struct pci_dev *dev) { struct irq_routing_table *rt = pirq_table; - int entries = (rt->size - sizeof(struct irq_routing_table)) / sizeof(struct irq_info); + int entries = (rt->size - sizeof(struct irq_routing_table)) / + sizeof(struct irq_info); struct irq_info *info; for (info = rt->slots; entries--; info++) - if (info->bus == dev->bus->number && PCI_SLOT(info->devfn) == PCI_SLOT(dev->devfn)) + if (info->bus == dev->bus->number && + PCI_SLOT(info->devfn) == PCI_SLOT(dev->devfn)) return info; return NULL; } @@ -889,7 +886,7 @@ static int pcibios_lookup_irq(struct pci_dev *dev, int assign) if (!pirq_table) return 0; - + DBG(KERN_DEBUG "IRQ for %s[%c]", pci_name(dev), 'A' + pin); info = pirq_get_info(dev); if (!info) { @@ -902,7 +899,8 @@ static int pcibios_lookup_irq(struct pci_dev *dev, int assign) DBG(" -> not routed\n" KERN_DEBUG); return 0; } - DBG(" -> PIRQ %02x, mask %04x, excl %04x", pirq, mask, pirq_table->exclusive_irqs); + DBG(" -> PIRQ %02x, mask %04x, excl %04x", pirq, mask, + pirq_table->exclusive_irqs); mask &= pcibios_irq_mask; /* Work around broken HP Pavilion Notebooks which assign USB to @@ -915,7 +913,8 @@ static int pcibios_lookup_irq(struct pci_dev *dev, int assign) } /* same for Acer Travelmate 360, but with CB and irq 11 -> 10 */ - if (acer_tm360_irqrouting && dev->irq == 11 && dev->vendor == PCI_VENDOR_ID_O2) { + if (acer_tm360_irqrouting && dev->irq == 11 && + dev->vendor == PCI_VENDOR_ID_O2) { pirq = 0x68; mask = 0x400; dev->irq = r->get(pirq_router_dev, dev, pirq); @@ -928,17 +927,20 @@ static int pcibios_lookup_irq(struct pci_dev *dev, int assign) */ newirq = dev->irq; if (newirq && !((1 << newirq) & mask)) { - if ( pci_probe & PCI_USE_PIRQ_MASK) newirq = 0; - else printk("\n" KERN_WARNING - "PCI: IRQ %i for device %s doesn't match PIRQ mask " - "- try pci=usepirqmask\n" KERN_DEBUG, newirq, - pci_name(dev)); + if (pci_probe & PCI_USE_PIRQ_MASK) + newirq = 0; + else + printk("\n" KERN_WARNING + "PCI: IRQ %i for device %s doesn't match PIRQ mask - try pci=usepirqmask\n" + KERN_DEBUG, newirq, + pci_name(dev)); } if (!newirq && assign) { for (i = 0; i < 16; i++) { if (!(mask & (1 << i))) continue; - if (pirq_penalty[i] < pirq_penalty[newirq] && can_request_irq(i, IRQF_SHARED)) + if (pirq_penalty[i] < pirq_penalty[newirq] && + can_request_irq(i, IRQF_SHARED)) newirq = i; } } @@ -949,12 +951,13 @@ static int pcibios_lookup_irq(struct pci_dev *dev, int assign) irq = pirq & 0xf; DBG(" -> hardcoded IRQ %d\n", irq); msg = "Hardcoded"; - } else if ( r->get && (irq = r->get(pirq_router_dev, dev, pirq)) && \ - ((!(pci_probe & PCI_USE_PIRQ_MASK)) || ((1 << irq) & mask)) ) { + } else if (r->get && (irq = r->get(pirq_router_dev, dev, pirq)) && \ + ((!(pci_probe & PCI_USE_PIRQ_MASK)) || ((1 << irq) & mask))) { DBG(" -> got IRQ %d\n", irq); msg = "Found"; eisa_set_level_irq(irq); - } else if (newirq && r->set && (dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) { + } else if (newirq && r->set && + (dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) { DBG(" -> assigning IRQ %d", newirq); if (r->set(pirq_router_dev, dev, pirq, newirq)) { eisa_set_level_irq(newirq); @@ -972,7 +975,8 @@ static int pcibios_lookup_irq(struct pci_dev *dev, int assign) } else return 0; } - printk(KERN_INFO "PCI: %s IRQ %d for device %s\n", msg, irq, pci_name(dev)); + printk(KERN_INFO "PCI: %s IRQ %d for device %s\n", msg, irq, + pci_name(dev)); /* Update IRQ for all devices with the same pirq value */ while ((dev2 = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev2)) != NULL) { @@ -984,20 +988,25 @@ static int pcibios_lookup_irq(struct pci_dev *dev, int assign) if (!info) continue; if (info->irq[pin].link == pirq) { - /* We refuse to override the dev->irq information. Give a warning! */ - if ( dev2->irq && dev2->irq != irq && \ + /* + * We refuse to override the dev->irq + * information. Give a warning! + */ + if (dev2->irq && dev2->irq != irq && \ (!(pci_probe & PCI_USE_PIRQ_MASK) || \ - ((1 << dev2->irq) & mask)) ) { + ((1 << dev2->irq) & mask))) { #ifndef CONFIG_PCI_MSI - printk(KERN_INFO "IRQ routing conflict for %s, have irq %d, want irq %d\n", + printk(KERN_INFO "IRQ routing conflict for %s, have irq %d, want irq %d\n", pci_name(dev2), dev2->irq, irq); #endif - continue; - } + continue; + } dev2->irq = irq; pirq_penalty[irq]++; if (dev != dev2) - printk(KERN_INFO "PCI: Sharing IRQ %d with %s\n", irq, pci_name(dev2)); + printk(KERN_INFO + "PCI: Sharing IRQ %d with %s\n", + irq, pci_name(dev2)); } } return 1; @@ -1011,15 +1020,21 @@ static void __init pcibios_fixup_irqs(void) DBG(KERN_DEBUG "PCI: IRQ fixup\n"); while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) { /* - * If the BIOS has set an out of range IRQ number, just ignore it. - * Also keep track of which IRQ's are already in use. + * If the BIOS has set an out of range IRQ number, just + * ignore it. Also keep track of which IRQ's are + * already in use. */ if (dev->irq >= 16) { - DBG(KERN_DEBUG "%s: ignoring bogus IRQ %d\n", pci_name(dev), dev->irq); + DBG(KERN_DEBUG "%s: ignoring bogus IRQ %d\n", + pci_name(dev), dev->irq); dev->irq = 0; } - /* If the IRQ is already assigned to a PCI device, ignore its ISA use penalty */ - if (pirq_penalty[dev->irq] >= 100 && pirq_penalty[dev->irq] < 100000) + /* + * If the IRQ is already assigned to a PCI device, + * ignore its ISA use penalty + */ + if (pirq_penalty[dev->irq] >= 100 && + pirq_penalty[dev->irq] < 100000) pirq_penalty[dev->irq] = 0; pirq_penalty[dev->irq]++; } @@ -1031,13 +1046,17 @@ static void __init pcibios_fixup_irqs(void) /* * Recalculate IRQ numbers if we use the I/O APIC. */ - if (io_apic_assign_pci_irqs) - { + if (io_apic_assign_pci_irqs) { int irq; if (pin) { - pin--; /* interrupt pins are numbered starting from 1 */ - irq = IO_APIC_get_PCI_irq_vector(dev->bus->number, PCI_SLOT(dev->devfn), pin); + /* + * interrupt pins are numbered starting + * from 1 + */ + pin--; + irq = IO_APIC_get_PCI_irq_vector(dev->bus->number, + PCI_SLOT(dev->devfn), pin); /* * Busses behind bridges are typically not listed in the MP-table. * In this case we have to look up the IRQ based on the parent bus, @@ -1045,10 +1064,10 @@ static void __init pcibios_fixup_irqs(void) * busses itself so we should get into this branch reliably. */ if (irq < 0 && dev->bus->parent) { /* go back to the bridge */ - struct pci_dev * bridge = dev->bus->self; + struct pci_dev *bridge = dev->bus->self; pin = (pin + PCI_SLOT(dev->devfn)) % 4; - irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number, + irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number, PCI_SLOT(bridge->devfn), pin); if (irq >= 0) printk(KERN_WARNING "PCI: using PPB %s[%c] to get irq %d\n", @@ -1078,7 +1097,8 @@ static int __init fix_broken_hp_bios_irq9(const struct dmi_system_id *d) { if (!broken_hp_bios_irq9) { broken_hp_bios_irq9 = 1; - printk(KERN_INFO "%s detected - fixing broken IRQ routing\n", d->ident); + printk(KERN_INFO "%s detected - fixing broken IRQ routing\n", + d->ident); } return 0; } @@ -1091,7 +1111,8 @@ static int __init fix_acer_tm360_irqrouting(const struct dmi_system_id *d) { if (!acer_tm360_irqrouting) { acer_tm360_irqrouting = 1; - printk(KERN_INFO "%s detected - fixing broken IRQ routing\n", d->ident); + printk(KERN_INFO "%s detected - fixing broken IRQ routing\n", + d->ident); } return 0; } @@ -1103,7 +1124,8 @@ static struct dmi_system_id __initdata pciirq_dmi_table[] = { .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), DMI_MATCH(DMI_BIOS_VERSION, "GE.M1.03"), - DMI_MATCH(DMI_PRODUCT_VERSION, "HP Pavilion Notebook Model GE"), + DMI_MATCH(DMI_PRODUCT_VERSION, + "HP Pavilion Notebook Model GE"), DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"), }, }, @@ -1118,7 +1140,7 @@ static struct dmi_system_id __initdata pciirq_dmi_table[] = { { } }; -static int __init pcibios_irq_init(void) +int __init pcibios_irq_init(void) { DBG(KERN_DEBUG "PCI: IRQ init\n"); @@ -1138,11 +1160,14 @@ static int __init pcibios_irq_init(void) pirq_find_router(&pirq_router); if (pirq_table->exclusive_irqs) { int i; - for (i=0; i<16; i++) + for (i = 0; i < 16; i++) if (!(pirq_table->exclusive_irqs & (1 << i))) pirq_penalty[i] += 100; } - /* If we're using the I/O APIC, avoid using the PCI IRQ routing table */ + /* + * If we're using the I/O APIC, avoid using the PCI IRQ + * routing table + */ if (io_apic_assign_pci_irqs) pirq_table = NULL; } @@ -1153,9 +1178,6 @@ static int __init pcibios_irq_init(void) return 0; } -subsys_initcall(pcibios_irq_init); - - static void pirq_penalize_isa_irq(int irq, int active) { /* @@ -1189,7 +1211,7 @@ static int pirq_enable_irq(struct pci_dev *dev) if (pin && !pcibios_lookup_irq(dev, 1) && !dev->irq) { char *msg = ""; - pin--; /* interrupt pins are numbered starting from 1 */ + pin--; /* interrupt pins are numbered starting from 1 */ if (io_apic_assign_pci_irqs) { int irq; @@ -1203,19 +1225,22 @@ static int pirq_enable_irq(struct pci_dev *dev) */ temp_dev = dev; while (irq < 0 && dev->bus->parent) { /* go back to the bridge */ - struct pci_dev * bridge = dev->bus->self; + struct pci_dev *bridge = dev->bus->self; pin = (pin + PCI_SLOT(dev->devfn)) % 4; - irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number, + irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number, PCI_SLOT(bridge->devfn), pin); if (irq >= 0) - printk(KERN_WARNING "PCI: using PPB %s[%c] to get irq %d\n", - pci_name(bridge), 'A' + pin, irq); + printk(KERN_WARNING + "PCI: using PPB %s[%c] to get irq %d\n", + pci_name(bridge), + 'A' + pin, irq); dev = bridge; } dev = temp_dev; if (irq >= 0) { - printk(KERN_INFO "PCI->APIC IRQ transform: %s[%c] -> IRQ %d\n", + printk(KERN_INFO + "PCI->APIC IRQ transform: %s[%c] -> IRQ %d\n", pci_name(dev), 'A' + pin, irq); dev->irq = irq; return 0; @@ -1226,12 +1251,17 @@ static int pirq_enable_irq(struct pci_dev *dev) else msg = " Please try using pci=biosirq."; - /* With IDE legacy devices the IRQ lookup failure is not a problem.. */ - if (dev->class >> 8 == PCI_CLASS_STORAGE_IDE && !(dev->class & 0x5)) + /* + * With IDE legacy devices the IRQ lookup failure is not + * a problem.. + */ + if (dev->class >> 8 == PCI_CLASS_STORAGE_IDE && + !(dev->class & 0x5)) return 0; - printk(KERN_WARNING "PCI: No IRQ known for interrupt pin %c of device %s.%s\n", - 'A' + pin, pci_name(dev), msg); + printk(KERN_WARNING + "PCI: No IRQ known for interrupt pin %c of device %s.%s\n", + 'A' + pin, pci_name(dev), msg); } return 0; } |