diff options
Diffstat (limited to 'arch/x86/kernel/acpi')
-rw-r--r-- | arch/x86/kernel/acpi/boot.c | 17 | ||||
-rw-r--r-- | arch/x86/kernel/acpi/cstate.c | 74 | ||||
-rw-r--r-- | arch/x86/kernel/acpi/sleep.c | 2 |
3 files changed, 58 insertions, 35 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 29dc0c89d4af..d37593c2f438 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -47,7 +47,7 @@ #endif static int __initdata acpi_force = 0; - +u32 acpi_rsdt_forced; #ifdef CONFIG_ACPI int acpi_disabled = 0; #else @@ -1374,6 +1374,17 @@ static void __init acpi_process_madt(void) "Invalid BIOS MADT, disabling ACPI\n"); disable_acpi(); } + } else { + /* + * ACPI found no MADT, and so ACPI wants UP PIC mode. + * In the event an MPS table was found, forget it. + * Boot with "acpi=off" to use MPS on such a system. + */ + if (smp_found_config) { + printk(KERN_WARNING PREFIX + "No APIC-table, disabling MPS\n"); + smp_found_config = 0; + } } /* @@ -1809,6 +1820,10 @@ static int __init parse_acpi(char *arg) disable_acpi(); acpi_ht = 1; } + /* acpi=rsdt use RSDT instead of XSDT */ + else if (strcmp(arg, "rsdt") == 0) { + acpi_rsdt_forced = 1; + } /* "acpi=noirq" disables ACPI interrupt routing */ else if (strcmp(arg, "noirq") == 0) { acpi_noirq_set(); diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c index c2502eb9aa83..bbbe4bbb6f34 100644 --- a/arch/x86/kernel/acpi/cstate.c +++ b/arch/x86/kernel/acpi/cstate.c @@ -56,6 +56,7 @@ static struct cstate_entry *cpu_cstate_entry; /* per CPU ptr */ static short mwait_supported[ACPI_PROCESSOR_MAX_POWER]; #define MWAIT_SUBSTATE_MASK (0xf) +#define MWAIT_CSTATE_MASK (0xf) #define MWAIT_SUBSTATE_SIZE (4) #define CPUID_MWAIT_LEAF (5) @@ -66,39 +67,20 @@ static short mwait_supported[ACPI_PROCESSOR_MAX_POWER]; #define NATIVE_CSTATE_BEYOND_HALT (2) -int acpi_processor_ffh_cstate_probe(unsigned int cpu, - struct acpi_processor_cx *cx, struct acpi_power_register *reg) +static long acpi_processor_ffh_cstate_probe_cpu(void *_cx) { - struct cstate_entry *percpu_entry; - struct cpuinfo_x86 *c = &cpu_data(cpu); - - cpumask_t saved_mask; - int retval; + struct acpi_processor_cx *cx = _cx; + long retval; unsigned int eax, ebx, ecx, edx; unsigned int edx_part; unsigned int cstate_type; /* C-state type and not ACPI C-state type */ unsigned int num_cstate_subtype; - if (!cpu_cstate_entry || c->cpuid_level < CPUID_MWAIT_LEAF ) - return -1; - - if (reg->bit_offset != NATIVE_CSTATE_BEYOND_HALT) - return -1; - - percpu_entry = per_cpu_ptr(cpu_cstate_entry, cpu); - percpu_entry->states[cx->index].eax = 0; - percpu_entry->states[cx->index].ecx = 0; - - /* Make sure we are running on right CPU */ - saved_mask = current->cpus_allowed; - retval = set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu)); - if (retval) - return -1; - cpuid(CPUID_MWAIT_LEAF, &eax, &ebx, &ecx, &edx); /* Check whether this particular cx_type (in CST) is supported or not */ - cstate_type = (cx->address >> MWAIT_SUBSTATE_SIZE) + 1; + cstate_type = ((cx->address >> MWAIT_SUBSTATE_SIZE) & + MWAIT_CSTATE_MASK) + 1; edx_part = edx >> (cstate_type * MWAIT_SUBSTATE_SIZE); num_cstate_subtype = edx_part & MWAIT_SUBSTATE_MASK; @@ -114,21 +96,45 @@ int acpi_processor_ffh_cstate_probe(unsigned int cpu, retval = -1; goto out; } - percpu_entry->states[cx->index].ecx = MWAIT_ECX_INTERRUPT_BREAK; - - /* Use the hint in CST */ - percpu_entry->states[cx->index].eax = cx->address; if (!mwait_supported[cstate_type]) { mwait_supported[cstate_type] = 1; - printk(KERN_DEBUG "Monitor-Mwait will be used to enter C-%d " - "state\n", cx->type); + printk(KERN_DEBUG + "Monitor-Mwait will be used to enter C-%d " + "state\n", cx->type); } - snprintf(cx->desc, ACPI_CX_DESC_LEN, "ACPI FFH INTEL MWAIT 0x%x", - cx->address); - + snprintf(cx->desc, + ACPI_CX_DESC_LEN, "ACPI FFH INTEL MWAIT 0x%x", + cx->address); out: - set_cpus_allowed_ptr(current, &saved_mask); + return retval; +} + +int acpi_processor_ffh_cstate_probe(unsigned int cpu, + struct acpi_processor_cx *cx, struct acpi_power_register *reg) +{ + struct cstate_entry *percpu_entry; + struct cpuinfo_x86 *c = &cpu_data(cpu); + long retval; + + if (!cpu_cstate_entry || c->cpuid_level < CPUID_MWAIT_LEAF) + return -1; + + if (reg->bit_offset != NATIVE_CSTATE_BEYOND_HALT) + return -1; + + percpu_entry = per_cpu_ptr(cpu_cstate_entry, cpu); + percpu_entry->states[cx->index].eax = 0; + percpu_entry->states[cx->index].ecx = 0; + + /* Make sure we are running on right CPU */ + + retval = work_on_cpu(cpu, acpi_processor_ffh_cstate_probe_cpu, cx); + if (retval == 0) { + /* Use the hint in CST */ + percpu_entry->states[cx->index].eax = cx->address; + percpu_entry->states[cx->index].ecx = MWAIT_ECX_INTERRUPT_BREAK; + } return retval; } EXPORT_SYMBOL_GPL(acpi_processor_ffh_cstate_probe); diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c index 806b4e9051b4..707c1f6f95fa 100644 --- a/arch/x86/kernel/acpi/sleep.c +++ b/arch/x86/kernel/acpi/sleep.c @@ -159,6 +159,8 @@ static int __init acpi_sleep_setup(char *str) #endif if (strncmp(str, "old_ordering", 12) == 0) acpi_old_suspend_ordering(); + if (strncmp(str, "s4_nonvs", 8) == 0) + acpi_s4_no_nvs(); str = strchr(str, ','); if (str != NULL) str += strspn(str, ", \t"); |