diff options
Diffstat (limited to 'arch/x86/kernel/mpparse_32.c')
| -rw-r--r-- | arch/x86/kernel/mpparse_32.c | 39 |
1 files changed, 22 insertions, 17 deletions
diff --git a/arch/x86/kernel/mpparse_32.c b/arch/x86/kernel/mpparse_32.c index 7a05a7f6099a..67009cdd5eca 100644 --- a/arch/x86/kernel/mpparse_32.c +++ b/arch/x86/kernel/mpparse_32.c @@ -68,7 +68,7 @@ unsigned int def_to_bigsmp = 0; /* Processor that is doing the boot up */ unsigned int boot_cpu_physical_apicid = -1U; /* Internal processor count */ -unsigned int __cpuinitdata num_processors; +unsigned int num_processors; /* Bitmask of physically existing CPUs */ physid_mask_t phys_cpu_present_map; @@ -258,7 +258,7 @@ static void __init MP_ioapic_info (struct mpc_config_ioapic *m) if (!(m->mpc_flags & MPC_APIC_USABLE)) return; - printk(KERN_INFO "I/O APIC #%d Version %d at 0x%lX.\n", + printk(KERN_INFO "I/O APIC #%d Version %d at 0x%X.\n", m->mpc_apicid, m->mpc_apicver, m->mpc_apicaddr); if (nr_ioapics >= MAX_IO_APICS) { printk(KERN_CRIT "Max # of I/O APICs (%d) exceeded (found %d).\n", @@ -405,9 +405,9 @@ static int __init smp_read_mpc(struct mp_config_table *mpc) mps_oem_check(mpc, oem, str); - printk("APIC at: 0x%lX\n",mpc->mpc_lapic); + printk("APIC at: 0x%X\n", mpc->mpc_lapic); - /* + /* * Save the local APIC address (it might be non-default) -- but only * if we're not using ACPI. */ @@ -721,7 +721,7 @@ static int __init smp_scan_config (unsigned long base, unsigned long length) unsigned long *bp = phys_to_virt(base); struct intel_mp_floating *mpf; - Dprintk("Scan SMP from %p for %ld bytes.\n", bp,length); + printk(KERN_INFO "Scan SMP from %p for %ld bytes.\n", bp,length); if (sizeof(*mpf) != 16) printk("Error: MPF size\n"); @@ -734,8 +734,8 @@ static int __init smp_scan_config (unsigned long base, unsigned long length) || (mpf->mpf_specification == 4)) ) { smp_found_config = 1; - printk(KERN_INFO "found SMP MP-table at %08lx\n", - virt_to_phys(mpf)); + printk(KERN_INFO "found SMP MP-table at [%p] %08lx\n", + mpf, virt_to_phys(mpf)); reserve_bootmem(virt_to_phys(mpf), PAGE_SIZE); if (mpf->mpf_physptr) { /* @@ -918,14 +918,14 @@ void __init mp_register_ioapic(u8 id, u32 address, u32 gsi_base) */ mp_ioapic_routing[idx].apic_id = mp_ioapics[idx].mpc_apicid; mp_ioapic_routing[idx].gsi_base = gsi_base; - mp_ioapic_routing[idx].gsi_end = gsi_base + + mp_ioapic_routing[idx].gsi_end = gsi_base + io_apic_get_redir_entries(idx); - printk("IOAPIC[%d]: apic_id %d, version %d, address 0x%lx, " - "GSI %d-%d\n", idx, mp_ioapics[idx].mpc_apicid, - mp_ioapics[idx].mpc_apicver, mp_ioapics[idx].mpc_apicaddr, - mp_ioapic_routing[idx].gsi_base, - mp_ioapic_routing[idx].gsi_end); + printk("IOAPIC[%d]: apic_id %d, version %d, address 0x%x, " + "GSI %d-%d\n", idx, mp_ioapics[idx].mpc_apicid, + mp_ioapics[idx].mpc_apicver, mp_ioapics[idx].mpc_apicaddr, + mp_ioapic_routing[idx].gsi_base, + mp_ioapic_routing[idx].gsi_end); } void __init @@ -1041,15 +1041,16 @@ void __init mp_config_acpi_legacy_irqs (void) } #define MAX_GSI_NUM 4096 +#define IRQ_COMPRESSION_START 64 int mp_register_gsi(u32 gsi, int triggering, int polarity) { int ioapic = -1; int ioapic_pin = 0; int idx, bit = 0; - static int pci_irq = 16; + static int pci_irq = IRQ_COMPRESSION_START; /* - * Mapping between Global System Interrups, which + * Mapping between Global System Interrupts, which * represent all possible interrupts, and IRQs * assigned to actual devices. */ @@ -1086,12 +1087,16 @@ int mp_register_gsi(u32 gsi, int triggering, int polarity) if ((1<<bit) & mp_ioapic_routing[ioapic].pin_programmed[idx]) { Dprintk(KERN_DEBUG "Pin %d-%d already programmed\n", mp_ioapic_routing[ioapic].apic_id, ioapic_pin); - return gsi_to_irq[gsi]; + return (gsi < IRQ_COMPRESSION_START ? gsi : gsi_to_irq[gsi]); } mp_ioapic_routing[ioapic].pin_programmed[idx] |= (1<<bit); - if (triggering == ACPI_LEVEL_SENSITIVE) { + /* + * For GSI >= 64, use IRQ compression + */ + if ((gsi >= IRQ_COMPRESSION_START) + && (triggering == ACPI_LEVEL_SENSITIVE)) { /* * For PCI devices assign IRQs in order, avoiding gaps * due to unused I/O APIC pins. |