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sys/x86/x86/local_apic.c
| Context not available. | |||||
| volatile char *lapic_map; | volatile char *lapic_map; | ||||
| vm_paddr_t lapic_paddr; | vm_paddr_t lapic_paddr; | ||||
| int x2apic_mode; | int x2apic_mode; | ||||
| int lapic_eoi_suppression; | |||||
| static u_long lapic_timer_divisor; | static u_long lapic_timer_divisor; | ||||
| static struct eventtimer lapic_et; | static struct eventtimer lapic_et; | ||||
| SYSCTL_NODE(_hw, OID_AUTO, apic, CTLFLAG_RD, 0, "APIC options"); | SYSCTL_NODE(_hw, OID_AUTO, apic, CTLFLAG_RD, 0, "APIC options"); | ||||
| SYSCTL_INT(_hw_apic, OID_AUTO, x2apic_mode, CTLFLAG_RD, &x2apic_mode, 0, ""); | SYSCTL_INT(_hw_apic, OID_AUTO, x2apic_mode, CTLFLAG_RD, &x2apic_mode, 0, ""); | ||||
| SYSCTL_INT(_hw_apic, OID_AUTO, eoi_suppression, CTLFLAG_RD, | |||||
| &lapic_eoi_suppression, 0, ""); | |||||
| static uint32_t | static uint32_t | ||||
| lapic_read32(enum LAPIC_REGISTERS reg) | lapic_read32(enum LAPIC_REGISTERS reg) | ||||
| Context not available. | |||||
| static void | static void | ||||
| native_lapic_init(vm_paddr_t addr) | native_lapic_init(vm_paddr_t addr) | ||||
| { | { | ||||
| uint32_t ver; | |||||
| u_int regs[4]; | u_int regs[4]; | ||||
| int i, arat; | int i, arat; | ||||
| Context not available. | |||||
| lapic_et.et_priv = NULL; | lapic_et.et_priv = NULL; | ||||
| et_register(&lapic_et); | et_register(&lapic_et); | ||||
| } | } | ||||
| /* | |||||
| * Set lapic_eoi_suppression after lapic_enable(), to not | |||||
| * enable suppression in the hardware prematurely. Note that | |||||
| * we by default enable suppression even when system only has | |||||
| * one IO-APIC, since EOI is broadcasted to all APIC agents, | |||||
| * including CPUs, otherwise. | |||||
| */ | |||||
| ver = lapic_read32(LAPIC_VERSION); | |||||
| if ((ver & APIC_VER_EOI_SUPPRESSION) != 0) { | |||||
| lapic_eoi_suppression = 1; | |||||
| TUNABLE_INT_FETCH("hw.lapic_eoi_suppression", | |||||
| &lapic_eoi_suppression); | |||||
| } | |||||
| } | } | ||||
| /* | /* | ||||
| Context not available. | |||||
| value = lapic_read32(LAPIC_SVR); | value = lapic_read32(LAPIC_SVR); | ||||
| value &= ~(APIC_SVR_VECTOR | APIC_SVR_FOCUS); | value &= ~(APIC_SVR_VECTOR | APIC_SVR_FOCUS); | ||||
| value |= APIC_SVR_FEN | APIC_SVR_SWEN | APIC_SPURIOUS_INT; | value |= APIC_SVR_FEN | APIC_SVR_SWEN | APIC_SPURIOUS_INT; | ||||
| if (lapic_eoi_suppression) | |||||
| value |= APIC_SVR_EOI_SUPPRESSION; | |||||
| lapic_write32(LAPIC_SVR, value); | lapic_write32(LAPIC_SVR, value); | ||||
| } | } | ||||
| Context not available. | |||||
| return; | return; | ||||
| #endif | #endif | ||||
| /* | /* | ||||
| * Finish setting up the local APIC on the BSP once we know how to | * Finish setting up the local APIC on the BSP once we know | ||||
| * properly program the LINT pins. | * how to properly program the LINT pins. In particular, this | ||||
| * enables the EOI suppression mode, if LAPIC support it and | |||||
| * user did not disabled the mode. | |||||
| */ | */ | ||||
| lapic_setup(1); | lapic_setup(1); | ||||
| if (bootverbose) | if (bootverbose) | ||||
| Context not available. | |||||