From 05131ecc99ea9da7f45ba3058fe8a2c1d0ceeab8 Mon Sep 17 00:00:00 2001 From: Venkatesh Pallipadi Date: Sun, 23 Oct 2005 16:31:00 -0400 Subject: [ACPI] Avoid BIOS inflicted crashes by evaluating _PDC only once Linux invokes the AML _PDC method (Processor Driver Capabilities) to tell the BIOS what features it can handle. While the ACPI spec says nothing about the OS invoking _PDC multiple times, doing so with changing bits seems to hopelessly confuse the BIOS on multiple platforms up to and including crashing the system. Factor out the _PDC invocation so Linux invokes it only once. http://bugzilla.kernel.org/show_bug.cgi?id=5483 Signed-off-by: Venkatesh Pallipadi Signed-off-by: Len Brown --- arch/i386/kernel/acpi/Makefile | 2 +- arch/i386/kernel/acpi/cstate.c | 58 ------------------ arch/i386/kernel/acpi/processor.c | 75 +++++++++++++++++++++++ arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c | 67 -------------------- arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c | 12 ---- 5 files changed, 76 insertions(+), 138 deletions(-) create mode 100644 arch/i386/kernel/acpi/processor.c (limited to 'arch/i386') diff --git a/arch/i386/kernel/acpi/Makefile b/arch/i386/kernel/acpi/Makefile index 267ca48e1b6c..d51c7313cae8 100644 --- a/arch/i386/kernel/acpi/Makefile +++ b/arch/i386/kernel/acpi/Makefile @@ -3,6 +3,6 @@ obj-$(CONFIG_X86_IO_APIC) += earlyquirk.o obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup.o ifneq ($(CONFIG_ACPI_PROCESSOR),) -obj-y += cstate.o +obj-y += cstate.o processor.o endif diff --git a/arch/i386/kernel/acpi/cstate.c b/arch/i386/kernel/acpi/cstate.c index 4c3036ba65df..25db49ef1770 100644 --- a/arch/i386/kernel/acpi/cstate.c +++ b/arch/i386/kernel/acpi/cstate.c @@ -14,64 +14,6 @@ #include #include -static void acpi_processor_power_init_intel_pdc(struct acpi_processor_power - *pow) -{ - struct acpi_object_list *obj_list; - union acpi_object *obj; - u32 *buf; - - /* allocate and initialize pdc. It will be used later. */ - obj_list = kmalloc(sizeof(struct acpi_object_list), GFP_KERNEL); - if (!obj_list) { - printk(KERN_ERR "Memory allocation error\n"); - return; - } - - obj = kmalloc(sizeof(union acpi_object), GFP_KERNEL); - if (!obj) { - printk(KERN_ERR "Memory allocation error\n"); - kfree(obj_list); - return; - } - - buf = kmalloc(12, GFP_KERNEL); - if (!buf) { - printk(KERN_ERR "Memory allocation error\n"); - kfree(obj); - kfree(obj_list); - return; - } - - buf[0] = ACPI_PDC_REVISION_ID; - buf[1] = 1; - buf[2] = ACPI_PDC_C_CAPABILITY_SMP; - - obj->type = ACPI_TYPE_BUFFER; - obj->buffer.length = 12; - obj->buffer.pointer = (u8 *) buf; - obj_list->count = 1; - obj_list->pointer = obj; - pow->pdc = obj_list; - - return; -} - -/* Initialize _PDC data based on the CPU vendor */ -void acpi_processor_power_init_pdc(struct acpi_processor_power *pow, - unsigned int cpu) -{ - struct cpuinfo_x86 *c = cpu_data + cpu; - - pow->pdc = NULL; - if (c->x86_vendor == X86_VENDOR_INTEL) - acpi_processor_power_init_intel_pdc(pow); - - return; -} - -EXPORT_SYMBOL(acpi_processor_power_init_pdc); - /* * Initialize bm_flags based on the CPU cache properties * On SMP it depends on cache configuration diff --git a/arch/i386/kernel/acpi/processor.c b/arch/i386/kernel/acpi/processor.c new file mode 100644 index 000000000000..9f4cc02717ec --- /dev/null +++ b/arch/i386/kernel/acpi/processor.c @@ -0,0 +1,75 @@ +/* + * arch/i386/kernel/acpi/processor.c + * + * Copyright (C) 2005 Intel Corporation + * Venkatesh Pallipadi + * - Added _PDC for platforms with Intel CPUs + */ + +#include +#include +#include +#include + +#include +#include + +static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c) +{ + struct acpi_object_list *obj_list; + union acpi_object *obj; + u32 *buf; + + /* allocate and initialize pdc. It will be used later. */ + obj_list = kmalloc(sizeof(struct acpi_object_list), GFP_KERNEL); + if (!obj_list) { + printk(KERN_ERR "Memory allocation error\n"); + return; + } + + obj = kmalloc(sizeof(union acpi_object), GFP_KERNEL); + if (!obj) { + printk(KERN_ERR "Memory allocation error\n"); + kfree(obj_list); + return; + } + + buf = kmalloc(12, GFP_KERNEL); + if (!buf) { + printk(KERN_ERR "Memory allocation error\n"); + kfree(obj); + kfree(obj_list); + return; + } + + buf[0] = ACPI_PDC_REVISION_ID; + buf[1] = 1; + buf[2] = ACPI_PDC_C_CAPABILITY_SMP; + + if (cpu_has(c, X86_FEATURE_EST)) + buf[2] |= ACPI_PDC_EST_CAPABILITY_SMP; + + obj->type = ACPI_TYPE_BUFFER; + obj->buffer.length = 12; + obj->buffer.pointer = (u8 *) buf; + obj_list->count = 1; + obj_list->pointer = obj; + pr->pdc = obj_list; + + return; +} + +/* Initialize _PDC data based on the CPU vendor */ +void arch_acpi_processor_init_pdc(struct acpi_processor *pr) +{ + unsigned int cpu = pr->id; + struct cpuinfo_x86 *c = cpu_data + cpu; + + pr->pdc = NULL; + if (c->x86_vendor == X86_VENDOR_INTEL) + init_intel_pdc(pr, c); + + return; +} + +EXPORT_SYMBOL(arch_acpi_processor_init_pdc); diff --git a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c index 871366b83b3f..31ce890865d5 100644 --- a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c +++ b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c @@ -297,68 +297,6 @@ acpi_cpufreq_guess_freq ( } -/* - * acpi_processor_cpu_init_pdc_est - let BIOS know about the SMP capabilities - * of this driver - * @perf: processor-specific acpi_io_data struct - * @cpu: CPU being initialized - * - * To avoid issues with legacy OSes, some BIOSes require to be informed of - * the SMP capabilities of OS P-state driver. Here we set the bits in _PDC - * accordingly, for Enhanced Speedstep. Actual call to _PDC is done in - * driver/acpi/processor.c - */ -static void -acpi_processor_cpu_init_pdc_est( - struct acpi_processor_performance *perf, - unsigned int cpu, - struct acpi_object_list *obj_list - ) -{ - union acpi_object *obj; - u32 *buf; - struct cpuinfo_x86 *c = cpu_data + cpu; - dprintk("acpi_processor_cpu_init_pdc_est\n"); - - if (!cpu_has(c, X86_FEATURE_EST)) - return; - - /* Initialize pdc. It will be used later. */ - if (!obj_list) - return; - - if (!(obj_list->count && obj_list->pointer)) - return; - - obj = obj_list->pointer; - if ((obj->buffer.length == 12) && obj->buffer.pointer) { - buf = (u32 *)obj->buffer.pointer; - buf[0] = ACPI_PDC_REVISION_ID; - buf[1] = 1; - buf[2] = ACPI_PDC_EST_CAPABILITY_SMP; - perf->pdc = obj_list; - } - return; -} - - -/* CPU specific PDC initialization */ -static void -acpi_processor_cpu_init_pdc( - struct acpi_processor_performance *perf, - unsigned int cpu, - struct acpi_object_list *obj_list - ) -{ - struct cpuinfo_x86 *c = cpu_data + cpu; - dprintk("acpi_processor_cpu_init_pdc\n"); - perf->pdc = NULL; - if (cpu_has(c, X86_FEATURE_EST)) - acpi_processor_cpu_init_pdc_est(perf, cpu, obj_list); - return; -} - - static int acpi_cpufreq_cpu_init ( struct cpufreq_policy *policy) @@ -373,9 +311,6 @@ acpi_cpufreq_cpu_init ( struct acpi_object_list arg_list = {1, &arg0}; dprintk("acpi_cpufreq_cpu_init\n"); - /* setup arg_list for _PDC settings */ - arg0.buffer.length = 12; - arg0.buffer.pointer = (u8 *) arg0_buf; data = kzalloc(sizeof(struct cpufreq_acpi_io), GFP_KERNEL); if (!data) @@ -383,9 +318,7 @@ acpi_cpufreq_cpu_init ( acpi_io_data[cpu] = data; - acpi_processor_cpu_init_pdc(&data->acpi_data, cpu, &arg_list); result = acpi_processor_register_performance(&data->acpi_data, cpu); - data->acpi_data.pdc = NULL; if (result) goto err_free; diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c index edb9873e27e3..d93023438c4f 100644 --- a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c +++ b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c @@ -364,22 +364,10 @@ static struct acpi_processor_performance p; */ static int centrino_cpu_init_acpi(struct cpufreq_policy *policy) { - union acpi_object arg0 = {ACPI_TYPE_BUFFER}; - u32 arg0_buf[3]; - struct acpi_object_list arg_list = {1, &arg0}; unsigned long cur_freq; int result = 0, i; unsigned int cpu = policy->cpu; - /* _PDC settings */ - arg0.buffer.length = 12; - arg0.buffer.pointer = (u8 *) arg0_buf; - arg0_buf[0] = ACPI_PDC_REVISION_ID; - arg0_buf[1] = 1; - arg0_buf[2] = ACPI_PDC_EST_CAPABILITY_SMP_MSR; - - p.pdc = &arg_list; - /* register with ACPI core */ if (acpi_processor_register_performance(&p, cpu)) { dprintk(KERN_INFO PFX "obtaining ACPI data failed\n"); -- cgit v1.2.3 From f8a363b83f18356ebf0df0904fa4807ae48b21f2 Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Tue, 20 Dec 2005 12:13:30 -0800 Subject: [X86] Remove Winchip 4 ID. This CPU never made it into production. It went on to become the basis for the VIA Samuel. Signed-off-by: Dave Jones --- arch/i386/kernel/cpu/centaur.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'arch/i386') diff --git a/arch/i386/kernel/cpu/centaur.c b/arch/i386/kernel/cpu/centaur.c index 394814e57672..0dd92a23d622 100644 --- a/arch/i386/kernel/cpu/centaur.c +++ b/arch/i386/kernel/cpu/centaur.c @@ -405,10 +405,6 @@ static void __init init_centaur(struct cpuinfo_x86 *c) winchip2_protect_mcr(); #endif break; - case 10: - name="4"; - /* no info on the WC4 yet */ - break; default: name="??"; } -- cgit v1.2.3 From c32017a43d552b78717160bf6aab2af8a7ff84c4 Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Tue, 20 Dec 2005 14:46:07 -0800 Subject: [X86] Rename MTRR mutex to something more sensible. I spotted 'main_lock' whilst grovelling through a vmlinux with objdump. Even if it is static, it's a horrible name. Signed-off-by: Dave Jones --- arch/i386/kernel/cpu/mtrr/main.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'arch/i386') diff --git a/arch/i386/kernel/cpu/mtrr/main.c b/arch/i386/kernel/cpu/mtrr/main.c index 1e9db198c440..1a577768d4da 100644 --- a/arch/i386/kernel/cpu/mtrr/main.c +++ b/arch/i386/kernel/cpu/mtrr/main.c @@ -49,7 +49,7 @@ u32 num_var_ranges = 0; unsigned int *usage_table; -static DECLARE_MUTEX(main_lock); +static DECLARE_MUTEX(mtrr_sem); u32 size_or_mask, size_and_mask; @@ -335,7 +335,7 @@ int mtrr_add_page(unsigned long base, unsigned long size, /* No CPU hotplug when we change MTRR entries */ lock_cpu_hotplug(); /* Search for existing MTRR */ - down(&main_lock); + down(&mtrr_sem); for (i = 0; i < num_var_ranges; ++i) { mtrr_if->get(i, &lbase, &lsize, <ype); if (base >= lbase + lsize) @@ -373,7 +373,7 @@ int mtrr_add_page(unsigned long base, unsigned long size, printk(KERN_INFO "mtrr: no more MTRRs available\n"); error = i; out: - up(&main_lock); + up(&mtrr_sem); unlock_cpu_hotplug(); return error; } @@ -466,7 +466,7 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size) max = num_var_ranges; /* No CPU hotplug when we change MTRR entries */ lock_cpu_hotplug(); - down(&main_lock); + down(&mtrr_sem); if (reg < 0) { /* Search for existing MTRR */ for (i = 0; i < max; ++i) { @@ -505,7 +505,7 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size) set_mtrr(reg, 0, 0, 0); error = reg; out: - up(&main_lock); + up(&mtrr_sem); unlock_cpu_hotplug(); return error; } @@ -688,7 +688,7 @@ void mtrr_ap_init(void) if (!mtrr_if || !use_intel()) return; /* - * Ideally we should hold main_lock here to avoid mtrr entries changed, + * Ideally we should hold mtrr_sem here to avoid mtrr entries changed, * but this routine will be called in cpu boot time, holding the lock * breaks it. This routine is called in two cases: 1.very earily time * of software resume, when there absolutely isn't mtrr entry changes; -- cgit v1.2.3 From cb654695f6b912cef7cb3271665b6ee0d416124c Mon Sep 17 00:00:00 2001 From: Len Brown Date: Wed, 28 Dec 2005 02:43:51 -0500 Subject: [ACPI] acpi_register_gsi() fix needed for ACPICA 20051021 Use the #define for ACPI_LEVEL_SENSITIVE instead of assuming non-zero, because ACPICA 20051021 changes its value to zero. Also, use uniform variable names: edge_level -> triggering active_high_low -> polarity Signed-off-by: Len Brown --- arch/i386/kernel/acpi/boot.c | 6 +++--- arch/i386/kernel/mpparse.c | 8 ++++---- 2 files changed, 7 insertions(+), 7 deletions(-) (limited to 'arch/i386') diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c index 447fa9e33ffb..1f378df14f34 100644 --- a/arch/i386/kernel/acpi/boot.c +++ b/arch/i386/kernel/acpi/boot.c @@ -464,7 +464,7 @@ int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) * success: return IRQ number (>=0) * failure: return < 0 */ -int acpi_register_gsi(u32 gsi, int edge_level, int active_high_low) +int acpi_register_gsi(u32 gsi, int triggering, int polarity) { unsigned int irq; unsigned int plat_gsi = gsi; @@ -476,14 +476,14 @@ int acpi_register_gsi(u32 gsi, int edge_level, int active_high_low) if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { extern void eisa_set_level_irq(unsigned int irq); - if (edge_level == ACPI_LEVEL_SENSITIVE) + if (triggering == ACPI_LEVEL_SENSITIVE) eisa_set_level_irq(gsi); } #endif #ifdef CONFIG_X86_IO_APIC if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) { - plat_gsi = mp_register_gsi(gsi, edge_level, active_high_low); + plat_gsi = mp_register_gsi(gsi, triggering, polarity); } #endif acpi_gsi_to_irq(plat_gsi, &irq); diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c index 1ca5269b1e86..d7cede83ba2e 100644 --- a/arch/i386/kernel/mpparse.c +++ b/arch/i386/kernel/mpparse.c @@ -1070,7 +1070,7 @@ void __init mp_config_acpi_legacy_irqs (void) #define MAX_GSI_NUM 4096 -int mp_register_gsi (u32 gsi, int edge_level, int active_high_low) +int mp_register_gsi (u32 gsi, int triggering, int polarity) { int ioapic = -1; int ioapic_pin = 0; @@ -1119,7 +1119,7 @@ int mp_register_gsi (u32 gsi, int edge_level, int active_high_low) mp_ioapic_routing[ioapic].pin_programmed[idx] |= (1< Date: Thu, 5 Jan 2006 19:31:51 -0800 Subject: [X86] Remove pointless versioning of mtrr driver. It's not like this has changed significantly, and probably never will. Reduce some bootup dmesg noise. Signed-off-by: Dave Jones --- arch/i386/kernel/cpu/mtrr/main.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'arch/i386') diff --git a/arch/i386/kernel/cpu/mtrr/main.c b/arch/i386/kernel/cpu/mtrr/main.c index 1a577768d4da..3b4618bed70d 100644 --- a/arch/i386/kernel/cpu/mtrr/main.c +++ b/arch/i386/kernel/cpu/mtrr/main.c @@ -44,8 +44,6 @@ #include #include "mtrr.h" -#define MTRR_VERSION "2.0 (20020519)" - u32 num_var_ranges = 0; unsigned int *usage_table; @@ -671,7 +669,6 @@ void __init mtrr_bp_init(void) break; } } - printk(KERN_INFO "mtrr: v%s\n",MTRR_VERSION); if (mtrr_if) { set_num_var_ranges(); -- cgit v1.2.3 From 35f652b5ef4ef145ac5514f6302b3f4cebfbbad4 Mon Sep 17 00:00:00 2001 From: Benoit Boissinot Date: Fri, 6 Jan 2006 01:31:00 -0500 Subject: [ACPI] fix acpi_cpufreq.c build warrning Signed-off-by: Benoit Boissinot Signed-off-by: Andrew Morton Signed-off-by: Len Brown --- arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'arch/i386') diff --git a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c index 31ce890865d5..8a5e159d8185 100644 --- a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c +++ b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c @@ -306,10 +306,6 @@ acpi_cpufreq_cpu_init ( struct cpufreq_acpi_io *data; unsigned int result = 0; - union acpi_object arg0 = {ACPI_TYPE_BUFFER}; - u32 arg0_buf[3]; - struct acpi_object_list arg_list = {1, &arg0}; - dprintk("acpi_cpufreq_cpu_init\n"); data = kzalloc(sizeof(struct cpufreq_acpi_io), GFP_KERNEL); -- cgit v1.2.3 From cdc9cc1d740ffc3d8d8207fbf5df9bf05fcc9955 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Fri, 20 Jan 2006 01:25:37 +0100 Subject: [CPUFREQ] X86_GX_SUSPMOD must depend on PCI This patch fixes the following compile error: ... CC arch/i386/kernel/cpu/cpufreq/gx-suspmod.o arch/i386/kernel/cpu/cpufreq/gx-suspmod.c: In function 'gx_detect_chipset': arch/i386/kernel/cpu/cpufreq/gx-suspmod.c:193: error: implicit declaration of function 'pci_match_id' arch/i386/kernel/cpu/cpufreq/gx-suspmod.c:193: warning: comparison between pointer and integer make[3]: *** [arch/i386/kernel/cpu/cpufreq/gx-suspmod.o] Error 1 <-- snip --> Signed-off-by: Adrian Bunk Signed-off-by: Dave Jones --- arch/i386/kernel/cpu/cpufreq/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/i386') diff --git a/arch/i386/kernel/cpu/cpufreq/Kconfig b/arch/i386/kernel/cpu/cpufreq/Kconfig index 0f1eb507233b..26892d2099b0 100644 --- a/arch/i386/kernel/cpu/cpufreq/Kconfig +++ b/arch/i386/kernel/cpu/cpufreq/Kconfig @@ -96,6 +96,7 @@ config X86_POWERNOW_K8_ACPI config X86_GX_SUSPMOD tristate "Cyrix MediaGX/NatSemi Geode Suspend Modulation" + depends on PCI help This add the CPUFreq driver for NatSemi Geode processors which support suspend modulation. -- cgit v1.2.3 From c70ca00f77eb1bb69c5a2d029b3a911bc88eac1b Mon Sep 17 00:00:00 2001 From: Ben Collins Date: Wed, 18 Jan 2006 23:45:39 -0800 Subject: [CPUFREQ] p4-clockmod: Workaround for CPU's with N60 errata Ignore clock frequencies below 2Ghz for CPU's detected with N60 errata bug. Signed-off-by: Ben Collins Signed-off-by: Andrew Morton Signed-off-by: Dave Jones --- arch/i386/kernel/cpu/cpufreq/p4-clockmod.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'arch/i386') diff --git a/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c b/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c index 270f2188d68b..cc73a7ae34bc 100644 --- a/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c +++ b/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c @@ -52,6 +52,7 @@ enum { static int has_N44_O17_errata[NR_CPUS]; +static int has_N60_errata[NR_CPUS]; static unsigned int stock_freq; static struct cpufreq_driver p4clockmod_driver; static unsigned int cpufreq_p4_get(unsigned int cpu); @@ -226,6 +227,12 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy) case 0x0f12: has_N44_O17_errata[policy->cpu] = 1; dprintk("has errata -- disabling low frequencies\n"); + break; + + case 0x0f29: + has_N60_errata[policy->cpu] = 1; + dprintk("has errata -- disabling frequencies lower than 2ghz\n"); + break; } /* get max frequency */ @@ -237,6 +244,8 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy) for (i=1; (p4clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) { if ((i<2) && (has_N44_O17_errata[policy->cpu])) p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID; + else if (has_N60_errata[policy->cpu] && p4clockmod_table[i].frequency < 2000000) + p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID; else p4clockmod_table[i].frequency = (stock_freq * i)/8; } -- cgit v1.2.3 From 6fe8f479d02e47c80f816b2b9f5d3996ebfe6af6 Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Thu, 26 Jan 2006 22:40:40 -0800 Subject: [X86] Add new Intel cache descriptors. From http://www.intel.com/design/xeon/applnots/24161830.pdf 16MB of 16-way assoc 64 byte per cacheline L3 cache anyone? Yum. Signed-off-by: Dave Jones --- arch/i386/kernel/cpu/intel_cacheinfo.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'arch/i386') diff --git a/arch/i386/kernel/cpu/intel_cacheinfo.c b/arch/i386/kernel/cpu/intel_cacheinfo.c index fbfd374aa336..af591c73345f 100644 --- a/arch/i386/kernel/cpu/intel_cacheinfo.c +++ b/arch/i386/kernel/cpu/intel_cacheinfo.c @@ -43,13 +43,23 @@ static struct _cache_table cache_table[] __cpuinitdata = { 0x2c, LVL_1_DATA, 32 }, /* 8-way set assoc, 64 byte line size */ { 0x30, LVL_1_INST, 32 }, /* 8-way set assoc, 64 byte line size */ { 0x39, LVL_2, 128 }, /* 4-way set assoc, sectored cache, 64 byte line size */ + { 0x3a, LVL_2, 192 }, /* 6-way set assoc, sectored cache, 64 byte line size */ { 0x3b, LVL_2, 128 }, /* 2-way set assoc, sectored cache, 64 byte line size */ { 0x3c, LVL_2, 256 }, /* 4-way set assoc, sectored cache, 64 byte line size */ + { 0x3d, LVL_2, 384 }, /* 6-way set assoc, sectored cache, 64 byte line size */ + { 0x3e, LVL_2, 512 }, /* 4-way set assoc, sectored cache, 64 byte line size */ { 0x41, LVL_2, 128 }, /* 4-way set assoc, 32 byte line size */ { 0x42, LVL_2, 256 }, /* 4-way set assoc, 32 byte line size */ { 0x43, LVL_2, 512 }, /* 4-way set assoc, 32 byte line size */ { 0x44, LVL_2, 1024 }, /* 4-way set assoc, 32 byte line size */ { 0x45, LVL_2, 2048 }, /* 4-way set assoc, 32 byte line size */ + { 0x46, LVL_3, 4096 }, /* 4-way set assoc, 64 byte line size */ + { 0x47, LVL_3, 8192 }, /* 8-way set assoc, 64 byte line size */ + { 0x49, LVL_3, 4096 }, /* 16-way set assoc, 64 byte line size */ + { 0x4a, LVL_3, 6144 }, /* 12-way set assoc, 64 byte line size */ + { 0x4b, LVL_3, 8192 }, /* 16-way set assoc, 64 byte line size */ + { 0x4c, LVL_3, 12288 }, /* 12-way set assoc, 64 byte line size */ + { 0x4d, LVL_3, 16384 }, /* 16-way set assoc, 64 byte line size */ { 0x60, LVL_1_DATA, 16 }, /* 8-way set assoc, sectored cache, 64 byte line size */ { 0x66, LVL_1_DATA, 8 }, /* 4-way set assoc, sectored cache, 64 byte line size */ { 0x67, LVL_1_DATA, 16 }, /* 4-way set assoc, sectored cache, 64 byte line size */ @@ -57,6 +67,7 @@ static struct _cache_table cache_table[] __cpuinitdata = { 0x70, LVL_TRACE, 12 }, /* 8-way set assoc */ { 0x71, LVL_TRACE, 16 }, /* 8-way set assoc */ { 0x72, LVL_TRACE, 32 }, /* 8-way set assoc */ + { 0x73, LVL_TRACE, 64 }, /* 8-way set assoc */ { 0x78, LVL_2, 1024 }, /* 4-way set assoc, 64 byte line size */ { 0x79, LVL_2, 128 }, /* 8-way set assoc, sectored cache, 64 byte line size */ { 0x7a, LVL_2, 256 }, /* 8-way set assoc, sectored cache, 64 byte line size */ -- cgit v1.2.3 From b6ebb2659065b6e03605e7f0c69449bda382261a Mon Sep 17 00:00:00 2001 From: Jason Gaston Date: Mon, 9 Jan 2006 10:53:45 -0800 Subject: [PATCH] PCI: irq and pci_ids: patch for Intel ICH8 This patch adds the Intel ICH8 DID's to the irq.c and pci_ids.h files. Signed-off-by: Jason Gaston Signed-off-by: Greg Kroah-Hartman --- arch/i386/pci/irq.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/i386') diff --git a/arch/i386/pci/irq.c b/arch/i386/pci/irq.c index e715aa930036..3ca59cad05f3 100644 --- a/arch/i386/pci/irq.c +++ b/arch/i386/pci/irq.c @@ -539,6 +539,11 @@ static __init int intel_router_probe(struct irq_router *r, struct pci_dev *route case PCI_DEVICE_ID_INTEL_ICH7_30: case PCI_DEVICE_ID_INTEL_ICH7_31: case PCI_DEVICE_ID_INTEL_ESB2_0: + case PCI_DEVICE_ID_INTEL_ICH8_0: + case PCI_DEVICE_ID_INTEL_ICH8_1: + case PCI_DEVICE_ID_INTEL_ICH8_2: + case PCI_DEVICE_ID_INTEL_ICH8_3: + case PCI_DEVICE_ID_INTEL_ICH8_4: r->name = "PIIX/ICH"; r->get = pirq_piix_get; r->set = pirq_piix_set; -- cgit v1.2.3 From 3103039cc2a8dc6ababc29afac5c3cadbfa69af9 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Fri, 27 Jan 2006 02:03:50 +0100 Subject: [PATCH] PCI: handle bogus MCFG entries Handle more bogus MCFG entries Some Asus P4 boards seem to have broken MCFG tables with only a single entry for busses 0-0. Special case these and assume they mean all busses can be accessed. Signed-off-by: Andi Kleen Signed-off-by: Greg Kroah-Hartman --- arch/i386/pci/mmconfig.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (limited to 'arch/i386') diff --git a/arch/i386/pci/mmconfig.c b/arch/i386/pci/mmconfig.c index 4bb4d4b0f73a..0ee8a983708c 100644 --- a/arch/i386/pci/mmconfig.c +++ b/arch/i386/pci/mmconfig.c @@ -36,8 +36,7 @@ static u32 get_base_addr(unsigned int seg, int bus, unsigned devfn) while (1) { ++cfg_num; if (cfg_num >= pci_mmcfg_config_num) { - /* Not found - fallback to type 1 */ - return 0; + break; } cfg = &pci_mmcfg_config[cfg_num]; if (cfg->pci_segment_group_number != seg) @@ -46,6 +45,18 @@ static u32 get_base_addr(unsigned int seg, int bus, unsigned devfn) (cfg->end_bus_number >= bus)) return cfg->base_address; } + + /* Handle more broken MCFG tables on Asus etc. + They only contain a single entry for bus 0-0. Assume + this applies to all busses. */ + cfg = &pci_mmcfg_config[0]; + if (pci_mmcfg_config_num == 1 && + cfg->pci_segment_group_number == 0 && + (cfg->start_bus_number | cfg->end_bus_number) == 0) + return cfg->base_address; + + /* Fall back to type 0 */ + return 0; } static inline void pci_exp_set_dev_base(unsigned int base, int bus, int devfn) -- cgit v1.2.3 From 389d1ea50849f84c3a9f8640fcb66827746b4ab4 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Wed, 1 Feb 2006 03:04:35 -0800 Subject: [PATCH] CONFIG_DOUBLEFAULT Kconfig fix Move CONFIG_DOUBLEFAULT from the main Kconfig menu (!) into its proper place: the "Processor Type and features" submenu. Signed-off-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/i386/Kconfig | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'arch/i386') diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig index cbde675bc95c..4e9e49a55ea8 100644 --- a/arch/i386/Kconfig +++ b/arch/i386/Kconfig @@ -47,15 +47,6 @@ config DMI source "init/Kconfig" -config DOUBLEFAULT - default y - bool "Enable doublefault exception handler" if EMBEDDED - help - This option allows trapping of rare doublefault exceptions that - would otherwise cause a system to silently reboot. Disabling this - option saves about 4k and might cause you much additional grey - hair. - menu "Processor type and features" choice @@ -711,6 +702,15 @@ config HOTPLUG_CPU Say N. +config DOUBLEFAULT + default y + bool "Enable doublefault exception handler" if EMBEDDED + help + This option allows trapping of rare doublefault exceptions that + would otherwise cause a system to silently reboot. Disabling this + option saves about 4k and might cause you much additional grey + hair. + endmenu -- cgit v1.2.3 From bfaa1deeb982c985d8e0435e835baeaae63b57fd Mon Sep 17 00:00:00 2001 From: john stultz Date: Wed, 1 Feb 2006 03:05:19 -0800 Subject: [PATCH] disable lost tick compensation before TSCs are synced Avoid lost tick compensation early in boot before the TSCs are synchronized. Currently timekeeping is enabled before the TSCs are synchronized, thus when the TSCs are synched (reset to zero), it appears that a number of lost ticks have occurred. This can cause premature expiry of timers and in extreme cases can cause the soft lockup detection to fire. This resolves issues reported by Andy Whitcroft as well as bug #5366 reported by Tim Mann. Signed-off-by: John Stultz Acked-by: Andy Whitcroft Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/i386/kernel/timers/timer_tsc.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'arch/i386') diff --git a/arch/i386/kernel/timers/timer_tsc.c b/arch/i386/kernel/timers/timer_tsc.c index 47675bbbb316..7c86e3c5f1c1 100644 --- a/arch/i386/kernel/timers/timer_tsc.c +++ b/arch/i386/kernel/timers/timer_tsc.c @@ -45,6 +45,15 @@ static unsigned long last_tsc_high; /* msb 32 bits of Time Stamp Counter */ static unsigned long long monotonic_base; static seqlock_t monotonic_lock = SEQLOCK_UNLOCKED; +/* Avoid compensating for lost ticks before TSCs are synched */ +static int detect_lost_ticks; +static int __init start_lost_tick_compensation(void) +{ + detect_lost_ticks = 1; + return 0; +} +late_initcall(start_lost_tick_compensation); + /* convert from cycles(64bits) => nanoseconds (64bits) * basic equation: * ns = cycles / (freq / ns_per_sec) @@ -196,7 +205,8 @@ static void mark_offset_tsc_hpet(void) /* lost tick compensation */ offset = hpet_readl(HPET_T0_CMP) - hpet_tick; - if (unlikely(((offset - hpet_last) > hpet_tick) && (hpet_last != 0))) { + if (unlikely(((offset - hpet_last) > hpet_tick) && (hpet_last != 0)) + && detect_lost_ticks) { int lost_ticks = (offset - hpet_last) / hpet_tick; jiffies_64 += lost_ticks; } @@ -421,7 +431,7 @@ static void mark_offset_tsc(void) delta += delay_at_last_interrupt; lost = delta/(1000000/HZ); delay = delta%(1000000/HZ); - if (lost >= 2) { + if (lost >= 2 && detect_lost_ticks) { jiffies_64 += lost-1; /* sanity check to ensure we're not always losing ticks */ -- cgit v1.2.3 From 975b3d3d5b983eb60706d35f0d24cd19f6badabf Mon Sep 17 00:00:00 2001 From: Mark Lord Date: Wed, 1 Feb 2006 03:06:11 -0800 Subject: [PATCH] VMSPLIT config options Enable selection of different user/kernel VM splits for i386, including an optimized mode for 1GB physical RAM, which gives the kernel a direct (non HIGHMEM) mapping to the entire 1GB rather than just the first 896MB. There is a similarly a similarly optimized mode for machines with exactly 2GB of physical RAM. This can speed up the kernel by avoiding having to create/destroy temporary HIGHMEM mappings, and by not having to include HIGHMEM support at all on such machines. The flip side is that there's less virtual addressing left for userspace in these alternatives, and some binary-only kernel modules may misbehave unless rebuilt with the same VMSPLIT option as the main kernel image. Original idea/patch from Jens Axboe, modified based on suggestions from Linus et al. Signed-off-by: Mark Lord Signed-off-by: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/i386/Kconfig | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) (limited to 'arch/i386') diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig index 4e9e49a55ea8..d86c865a7cd2 100644 --- a/arch/i386/Kconfig +++ b/arch/i386/Kconfig @@ -448,6 +448,43 @@ config HIGHMEM64G endchoice +choice + depends on EXPERIMENTAL && !X86_PAE + prompt "Memory split" + default VMSPLIT_3G + help + Select the desired split between kernel and user memory. + + If the address range available to the kernel is less than the + physical memory installed, the remaining memory will be available + as "high memory". Accessing high memory is a little more costly + than low memory, as it needs to be mapped into the kernel first. + Note that increasing the kernel address space limits the range + available to user programs, making the address space there + tighter. Selecting anything other than the default 3G/1G split + will also likely make your kernel incompatible with binary-only + kernel modules. + + If you are not absolutely sure what you are doing, leave this + option alone! + + config VMSPLIT_3G + bool "3G/1G user/kernel split" + config VMSPLIT_3G_OPT + bool "3G/1G user/kernel split (for full 1G low memory)" + config VMSPLIT_2G + bool "2G/2G user/kernel split" + config VMSPLIT_1G + bool "1G/3G user/kernel split" +endchoice + +config PAGE_OFFSET + hex + default 0xB0000000 if VMSPLIT_3G_OPT + default 0x78000000 if VMSPLIT_2G + default 0x40000000 if VMSPLIT_1G + default 0xC0000000 + config HIGHMEM bool depends on HIGHMEM64G || HIGHMEM4G -- cgit v1.2.3