| 28,26 → 28,19 |
|---|
| |
| #ifdef __SMP__ |
| |
| #include <arch/pm.h> |
| #include <config.h> |
| #include <print.h> |
| #include <panic.h> |
| #include <debug.h> |
| #include <arch/smp/mps.h> |
| #include <arch/smp/ap.h> |
| #include <arch/smp/apic.h> |
| #include <arch/smp/smp.h> |
| #include <func.h> |
| #include <arch/types.h> |
| #include <typedefs.h> |
| #include <synch/waitq.h> |
| #include <time/delay.h> |
| #include <mm/heap.h> |
| #include <mm/page.h> |
| #include <mm/frame.h> |
| #include <cpu.h> |
| #include <arch/i8259.h> |
| #include <arch/asm.h> |
| #include <arch/bios/bios.h> |
| #include <arch/acpi/madt.h> |
| |
| /* |
| * MultiProcessor Specification detection code. |
| 88,7 → 81,47 |
|---|
| waitq_t ap_completion_wq; |
| waitq_t kmp_completion_wq; |
| |
| |
| /* |
| * Implementation of IA-32 SMP configuration interface. |
| */ |
| static count_t get_cpu_count(void); |
| static bool is_cpu_enabled(index_t i); |
| static bool is_bsp(index_t i); |
| static __u8 get_cpu_apic_id(index_t i); |
| |
| struct smp_config_operations mps_config_operations = { |
| .cpu_count = get_cpu_count, |
| .cpu_enabled = is_cpu_enabled, |
| .cpu_bootstrap = is_bsp, |
| .cpu_apic_id = get_cpu_apic_id |
| }; |
| |
| count_t get_cpu_count(void) |
| { |
| return processor_entry_cnt; |
| } |
| |
| bool is_cpu_enabled(index_t i) |
| { |
| ASSERT(i < processor_entry_cnt); |
| return processor_entries[i].cpu_flags & 0x1; |
| } |
| |
| bool is_bsp(index_t i) |
| { |
| ASSERT(i < processor_entry_cnt); |
| return processor_entries[i].cpu_flags & 0x2; |
| } |
| |
| __u8 get_cpu_apic_id(index_t i) |
| { |
| ASSERT(i < processor_entry_cnt); |
| return processor_entries[i].l_apic_id; |
| } |
| |
| |
| /* |
| * Used to check the integrity of the MP Floating Structure. |
| */ |
| int mps_fs_check(__u8 *base) |
| 392,101 → 425,6 |
|---|
| } |
| } |
| |
| |
| /* |
| * Kernel thread for bringing up application processors. It becomes clear |
| * that we need an arrangement like this (AP's being initialized by a kernel |
| * thread), for a thread has its dedicated stack. (The stack used during the |
| * BSP initialization (prior the very first call to scheduler()) will be used |
| * as an initialization stack for each AP.) |
| */ |
| void kmp(void *arg) |
| { |
| struct __processor_entry *pr; |
| __address src, dst; |
| int i; |
| |
| waitq_initialize(&ap_completion_wq); |
| |
| /* |
| * Processor entries immediately follow the configuration table header. |
| */ |
| pr = processor_entries; |
| |
| /* |
| * We need to access data in frame 0. |
| * We boldly make use of kernel address space mapping. |
| */ |
| |
| /* |
| * Set the warm-reset vector to the real-mode address of 4K-aligned ap_boot() |
| */ |
| *((__u16 *) (PA2KA(0x467+0))) = ((__address) ap_boot) >> 4; /* segment */ |
| *((__u16 *) (PA2KA(0x467+2))) = 0; /* offset */ |
| |
| /* |
| * Save 0xa to address 0xf of the CMOS RAM. |
| * BIOS will not do the POST after the INIT signal. |
| */ |
| outb(0x70,0xf); |
| outb(0x71,0xa); |
| |
| cpu_priority_high(); |
| |
| pic_disable_irqs(0xffff); |
| apic_init(); |
| |
| for (i = 0; i < processor_entry_cnt; i++) { |
| struct descriptor *gdt_new; |
| |
| /* |
| * Skip processors marked unusable. |
| */ |
| if (pr[i].cpu_flags & (1<<0) == 0) |
| continue; |
| |
| /* |
| * The bootstrap processor is already up. |
| */ |
| if (pr[i].cpu_flags & (1<<1)) |
| continue; |
| |
| if (pr[i].l_apic_id == l_apic_id()) { |
| printf("%L: bad processor entry #%d, will not send IPI to myself\n", &pr[i], i); |
| continue; |
| } |
| |
| /* |
| * Prepare new GDT for CPU in question. |
| */ |
| if (!(gdt_new = (struct descriptor *) malloc(GDT_ITEMS*sizeof(struct descriptor)))) |
| panic("couldn't allocate memory for GDT\n"); |
| |
| memcopy(gdt, gdt_new, GDT_ITEMS*sizeof(struct descriptor)); |
| memsetb(&gdt_new[TSS_DES], sizeof(struct descriptor), 0); |
| gdtr.base = KA2PA((__address) gdt_new); |
| |
| if (l_apic_send_init_ipi(pr[i].l_apic_id)) { |
| /* |
| * There may be just one AP being initialized at |
| * the time. After it comes completely up, it is |
| * supposed to wake us up. |
| */ |
| waitq_sleep(&ap_completion_wq); |
| cpu_priority_high(); |
| } |
| else { |
| printf("INIT IPI for l_apic%d failed\n", pr[i].l_apic_id); |
| } |
| } |
| |
| /* |
| * Wakeup the kinit thread so that |
| * system initialization can go on. |
| */ |
| waitq_wakeup(&kmp_completion_wq, WAKEUP_FIRST); |
| } |
| |
| int mps_irq_to_pin(int irq) |
| { |
| int i; |