From 3e35a0e525253837fc0ea4d0e060de3302bd9537 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 30 Jan 2008 13:30:19 +0100 Subject: [PATCH] x86: move ioapic code where it belongs The commit 399287229c775a8962a852a761d65dc9475dec7c hacked the ioapic resource mapping into apic.c for no good reason. Move the code into io_apic_64.c where it belongs. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- arch/x86/kernel/apic_64.c | 87 ---------------------------------- arch/x86/kernel/io_apic_64.c | 90 ++++++++++++++++++++++++++++++++++++ arch/x86/kernel/setup_64.c | 1 + include/asm-x86/io_apic_64.h | 2 + 4 files changed, 93 insertions(+), 87 deletions(-) diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c index 0cb14d4c2c..e0191cdd6f 100644 --- a/arch/x86/kernel/apic_64.c +++ b/arch/x86/kernel/apic_64.c @@ -49,7 +49,6 @@ static int apic_calibrate_pmtmr __initdata; int local_apic_timer_c2_ok; EXPORT_SYMBOL_GPL(local_apic_timer_c2_ok); -static struct resource *ioapic_resources; static struct resource lapic_resource = { .name = "Local APIC", .flags = IORESOURCE_MEM | IORESOURCE_BUSY, @@ -714,64 +713,6 @@ static int __init detect_init_APIC (void) return 0; } -#ifdef CONFIG_X86_IO_APIC -static struct resource * __init ioapic_setup_resources(void) -{ -#define IOAPIC_RESOURCE_NAME_SIZE 11 - unsigned long n; - struct resource *res; - char *mem; - int i; - - if (nr_ioapics <= 0) - return NULL; - - n = IOAPIC_RESOURCE_NAME_SIZE + sizeof(struct resource); - n *= nr_ioapics; - - mem = alloc_bootmem(n); - res = (void *)mem; - - if (mem != NULL) { - memset(mem, 0, n); - mem += sizeof(struct resource) * nr_ioapics; - - for (i = 0; i < nr_ioapics; i++) { - res[i].name = mem; - res[i].flags = IORESOURCE_MEM | IORESOURCE_BUSY; - sprintf(mem, "IOAPIC %u", i); - mem += IOAPIC_RESOURCE_NAME_SIZE; - } - } - - ioapic_resources = res; - - return res; -} - -static int __init ioapic_insert_resources(void) -{ - int i; - struct resource *r = ioapic_resources; - - if (!r) { - printk("IO APIC resources could be not be allocated.\n"); - return -1; - } - - for (i = 0; i < nr_ioapics; i++) { - insert_resource(&iomem_resource, r); - r++; - } - - return 0; -} - -/* Insert the IO APIC resources after PCI initialization has occured to handle - * IO APICS that are mapped in on a BAR in PCI space. */ -late_initcall(ioapic_insert_resources); -#endif - void __init init_apic_mappings(void) { unsigned long apic_phys; @@ -801,34 +742,6 @@ void __init init_apic_mappings(void) * default configuration (or the MP table is broken). */ boot_cpu_id = GET_APIC_ID(apic_read(APIC_ID)); - - { - unsigned long ioapic_phys, idx = FIX_IO_APIC_BASE_0; - int i; - struct resource *ioapic_res; - - ioapic_res = ioapic_setup_resources(); - for (i = 0; i < nr_ioapics; i++) { - if (smp_found_config) { - ioapic_phys = mp_ioapics[i].mpc_apicaddr; - } else { - ioapic_phys = (unsigned long) - alloc_bootmem_pages(PAGE_SIZE); - ioapic_phys = __pa(ioapic_phys); - } - set_fixmap_nocache(idx, ioapic_phys); - apic_printk(APIC_VERBOSE, - "mapped IOAPIC to %016lx (%016lx)\n", - __fix_to_virt(idx), ioapic_phys); - idx++; - - if (ioapic_res != NULL) { - ioapic_res->start = ioapic_phys; - ioapic_res->end = ioapic_phys + (4 * 1024) - 1; - ioapic_res++; - } - } - } } /* diff --git a/arch/x86/kernel/io_apic_64.c b/arch/x86/kernel/io_apic_64.c index d4f5286101..c6de7854ac 100644 --- a/arch/x86/kernel/io_apic_64.c +++ b/arch/x86/kernel/io_apic_64.c @@ -35,6 +35,7 @@ #ifdef CONFIG_ACPI #include #endif +#include #include #include @@ -2288,3 +2289,92 @@ void __init setup_ioapic_dest(void) } #endif +#define IOAPIC_RESOURCE_NAME_SIZE 11 + +static struct resource *ioapic_resources; + +static struct resource * __init ioapic_setup_resources(void) +{ + unsigned long n; + struct resource *res; + char *mem; + int i; + + if (nr_ioapics <= 0) + return NULL; + + n = IOAPIC_RESOURCE_NAME_SIZE + sizeof(struct resource); + n *= nr_ioapics; + + mem = alloc_bootmem(n); + res = (void *)mem; + + if (mem != NULL) { + memset(mem, 0, n); + mem += sizeof(struct resource) * nr_ioapics; + + for (i = 0; i < nr_ioapics; i++) { + res[i].name = mem; + res[i].flags = IORESOURCE_MEM | IORESOURCE_BUSY; + sprintf(mem, "IOAPIC %u", i); + mem += IOAPIC_RESOURCE_NAME_SIZE; + } + } + + ioapic_resources = res; + + return res; +} + +void __init ioapic_init_mappings(void) +{ + unsigned long ioapic_phys, idx = FIX_IO_APIC_BASE_0; + struct resource *ioapic_res; + int i; + + ioapic_res = ioapic_setup_resources(); + for (i = 0; i < nr_ioapics; i++) { + if (smp_found_config) { + ioapic_phys = mp_ioapics[i].mpc_apicaddr; + } else { + ioapic_phys = (unsigned long) + alloc_bootmem_pages(PAGE_SIZE); + ioapic_phys = __pa(ioapic_phys); + } + set_fixmap_nocache(idx, ioapic_phys); + apic_printk(APIC_VERBOSE, + "mapped IOAPIC to %016lx (%016lx)\n", + __fix_to_virt(idx), ioapic_phys); + idx++; + + if (ioapic_res != NULL) { + ioapic_res->start = ioapic_phys; + ioapic_res->end = ioapic_phys + (4 * 1024) - 1; + ioapic_res++; + } + } +} + +static int __init ioapic_insert_resources(void) +{ + int i; + struct resource *r = ioapic_resources; + + if (!r) { + printk(KERN_ERR + "IO APIC resources could be not be allocated.\n"); + return -1; + } + + for (i = 0; i < nr_ioapics; i++) { + insert_resource(&iomem_resource, r); + r++; + } + + return 0; +} + +/* Insert the IO APIC resources after PCI initialization has occured to handle + * IO APICS that are mapped in on a BAR in PCI space. */ +late_initcall(ioapic_insert_resources); + diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c index a84a4efc7f..bcb5f3aaa0 100644 --- a/arch/x86/kernel/setup_64.c +++ b/arch/x86/kernel/setup_64.c @@ -433,6 +433,7 @@ void __init setup_arch(char **cmdline_p) if (smp_found_config) get_smp_config(); init_apic_mappings(); + ioapic_init_mappings(); /* * We trust e820 completely. No explicit ROM probing in memory. diff --git a/include/asm-x86/io_apic_64.h b/include/asm-x86/io_apic_64.h index 762a841b93..3e3c2114d9 100644 --- a/include/asm-x86/io_apic_64.h +++ b/include/asm-x86/io_apic_64.h @@ -127,6 +127,8 @@ extern int io_apic_get_redir_entries (int ioapic); extern int io_apic_set_pci_routing (int ioapic, int pin, int irq, int, int); #endif +extern void ioapic_init_mappings(void); + extern int sis_apic_bug; /* dummy */ #endif -- 2.20.1