diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/io_apic.h | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/io_apic.c | 38 | ||||
| -rw-r--r-- | arch/x86/kernel/devicetree.c | 4 |
3 files changed, 29 insertions, 14 deletions
diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index 4f07bf6..690d1cc 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -108,6 +108,7 @@ extern int nr_ioapics; extern int mpc_ioapic_id(int ioapic); extern unsigned int mpc_ioapic_addr(int ioapic); +extern struct mp_ioapic_gsi *mp_ioapic_gsi_routing(int ioapic); #define MP_MAX_IOAPIC_PIN 127 diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index e911315..b7dd233 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -87,6 +87,8 @@ static struct ioapic { struct IO_APIC_route_entry *saved_registers; /* I/O APIC config */ struct mpc_ioapic mp_config; + /* IO APIC gsi routing info */ + struct mp_ioapic_gsi gsi_config; } ioapics[MAX_IO_APICS]; #define mpc_ioapic_ver(id) ioapics[id].mp_config.apicver @@ -101,10 +103,12 @@ unsigned int mpc_ioapic_addr(int id) return ioapics[id].mp_config.apicaddr; } -int nr_ioapics; +struct mp_ioapic_gsi *mp_ioapic_gsi_routing(int id) +{ + return &ioapics[id].gsi_config; +} -/* IO APIC gsi routing info */ -struct mp_ioapic_gsi mp_gsi_routing[MAX_IO_APICS]; +int nr_ioapics; /* The one past the highest gsi number used */ u32 gsi_top; @@ -924,6 +928,7 @@ static int pin_2_irq(int idx, int apic, int pin) { int irq; int bus = mp_irqs[idx].srcbus; + struct mp_ioapic_gsi *gsi_cfg = mp_ioapic_gsi_routing(apic); /* * Debugging check, we are in big trouble if this message pops up! @@ -934,7 +939,7 @@ static int pin_2_irq(int idx, int apic, int pin) if (test_bit(bus, mp_bus_not_pci)) { irq = mp_irqs[idx].srcbusirq; } else { - u32 gsi = mp_gsi_routing[apic].gsi_base + pin; + u32 gsi = gsi_cfg->gsi_base + pin; if (gsi >= NR_IRQS_LEGACY) irq = gsi; @@ -3898,8 +3903,9 @@ int mp_find_ioapic(u32 gsi) /* Find the IOAPIC that manages this GSI. */ for (i = 0; i < nr_ioapics; i++) { - if ((gsi >= mp_gsi_routing[i].gsi_base) - && (gsi <= mp_gsi_routing[i].gsi_end)) + struct mp_ioapic_gsi *gsi_cfg = mp_ioapic_gsi_routing(i); + if ((gsi >= gsi_cfg->gsi_base) + && (gsi <= gsi_cfg->gsi_end)) return i; } @@ -3909,12 +3915,16 @@ int mp_find_ioapic(u32 gsi) int mp_find_ioapic_pin(int ioapic, u32 gsi) { + struct mp_ioapic_gsi *gsi_cfg; + if (WARN_ON(ioapic == -1)) return -1; - if (WARN_ON(gsi > mp_gsi_routing[ioapic].gsi_end)) + + gsi_cfg = mp_ioapic_gsi_routing(ioapic); + if (WARN_ON(gsi > gsi_cfg->gsi_end)) return -1; - return gsi - mp_gsi_routing[ioapic].gsi_base; + return gsi - gsi_cfg->gsi_base; } static __init int bad_ioapic(unsigned long address) @@ -3936,6 +3946,7 @@ void __init mp_register_ioapic(int id, u32 address, u32 gsi_base) { int idx = 0; int entries; + struct mp_ioapic_gsi *gsi_cfg; if (bad_ioapic(address)) return; @@ -3955,21 +3966,22 @@ void __init mp_register_ioapic(int id, u32 address, u32 gsi_base) * and to prevent reprogramming of IOAPIC pins (PCI GSIs). */ entries = io_apic_get_redir_entries(idx); - mp_gsi_routing[idx].gsi_base = gsi_base; - mp_gsi_routing[idx].gsi_end = gsi_base + entries - 1; + gsi_cfg = mp_ioapic_gsi_routing(idx); + gsi_cfg->gsi_base = gsi_base; + gsi_cfg->gsi_end = gsi_base + entries - 1; /* * The number of IO-APIC IRQ registers (== #pins): */ ioapics[idx].nr_registers = entries; - if (mp_gsi_routing[idx].gsi_end >= gsi_top) - gsi_top = mp_gsi_routing[idx].gsi_end + 1; + if (gsi_cfg->gsi_end >= gsi_top) + gsi_top = gsi_cfg->gsi_end + 1; printk(KERN_INFO "IOAPIC[%d]: apic_id %d, version %d, address 0x%x, " "GSI %d-%d\n", idx, mpc_ioapic_id(idx), mpc_ioapic_ver(idx), mpc_ioapic_addr(idx), - mp_gsi_routing[idx].gsi_base, mp_gsi_routing[idx].gsi_end); + gsi_cfg->gsi_base, gsi_cfg->gsi_end); nr_ioapics++; } diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c index f06494e..690bc84 100644 --- a/arch/x86/kernel/devicetree.c +++ b/arch/x86/kernel/devicetree.c @@ -369,6 +369,7 @@ static struct of_ioapic_type of_ioapic_type[] = static int ioapic_xlate(struct irq_domain *id, const u32 *intspec, u32 intsize, u32 *out_hwirq, u32 *out_type) { + struct mp_ioapic_gsi *gsi_cfg; struct io_apic_irq_attr attr; struct of_ioapic_type *it; u32 line, idx, type; @@ -378,7 +379,8 @@ static int ioapic_xlate(struct irq_domain *id, const u32 *intspec, u32 intsize, line = *intspec; idx = (u32) id->priv; - *out_hwirq = line + mp_gsi_routing[idx].gsi_base; + gsi_cfg = mp_ioapic_gsi_routing(idx); + *out_hwirq = line + gsi_cfg->gsi_base; intspec++; type = *intspec; |