diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/kernel/cpu/cpufreq/powernow-k7.c | 36 | ||||
| -rw-r--r-- | arch/i386/kernel/cpu/cpufreq/powernow-k8.c | 2 | ||||
| -rw-r--r-- | arch/i386/kernel/cpu/cpufreq/powernow-k8.h | 4 |
3 files changed, 31 insertions, 11 deletions
diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k7.c b/arch/i386/kernel/cpu/cpufreq/powernow-k7.c index 837b04166a47..ca3e1d341889 100644 --- a/arch/i386/kernel/cpu/cpufreq/powernow-k7.c +++ b/arch/i386/kernel/cpu/cpufreq/powernow-k7.c @@ -341,15 +341,17 @@ static int powernow_acpi_init(void) pc.val = (unsigned long) acpi_processor_perf->states[0].control; for (i = 0; i < number_scales; i++) { u8 fid, vid; - unsigned int speed; + struct acpi_processor_px *state = + &acpi_processor_perf->states[i]; + unsigned int speed, speed_mhz; - pc.val = (unsigned long) acpi_processor_perf->states[i].control; + pc.val = (unsigned long) state->control; dprintk ("acpi: P%d: %d MHz %d mW %d uS control %08x SGTC %d\n", i, - (u32) acpi_processor_perf->states[i].core_frequency, - (u32) acpi_processor_perf->states[i].power, - (u32) acpi_processor_perf->states[i].transition_latency, - (u32) acpi_processor_perf->states[i].control, + (u32) state->core_frequency, + (u32) state->power, + (u32) state->transition_latency, + (u32) state->control, pc.bits.sgtc); vid = pc.bits.vid; @@ -360,6 +362,18 @@ static int powernow_acpi_init(void) powernow_table[i].index |= (vid << 8); /* upper 8 bits */ speed = powernow_table[i].frequency; + speed_mhz = speed / 1000; + + /* processor_perflib will multiply the MHz value by 1000 to + * get a KHz value (e.g. 1266000). However, powernow-k7 works + * with true KHz values (e.g. 1266768). To ensure that all + * powernow frequencies are available, we must ensure that + * ACPI doesn't restrict them, so we round up the MHz value + * to ensure that perflib's computed KHz value is greater than + * or equal to powernow's KHz value. + */ + if (speed % 1000 > 0) + speed_mhz++; if ((fid_codes[fid] % 10)==5) { if (have_a0 == 1) @@ -368,10 +382,16 @@ static int powernow_acpi_init(void) dprintk (" FID: 0x%x (%d.%dx [%dMHz]) " "VID: 0x%x (%d.%03dV)\n", fid, fid_codes[fid] / 10, - fid_codes[fid] % 10, speed/1000, vid, + fid_codes[fid] % 10, speed_mhz, vid, mobile_vid_table[vid]/1000, mobile_vid_table[vid]%1000); + if (state->core_frequency != speed_mhz) { + state->core_frequency = speed_mhz; + dprintk(" Corrected ACPI frequency to %d\n", + speed_mhz); + } + if (latency < pc.bits.sgtc) latency = pc.bits.sgtc; @@ -602,7 +622,7 @@ static int __init powernow_cpu_init (struct cpufreq_policy *policy) result = powernow_acpi_init(); if (result) { printk (KERN_INFO PFX "ACPI and legacy methods failed\n"); - printk (KERN_INFO PFX "See http://www.codemonkey.org.uk/projects/cpufreq/powernow-k7.shtml\n"); + printk (KERN_INFO PFX "See http://www.codemonkey.org.uk/projects/cpufreq/powernow-k7.html\n"); } } else { /* SGTC use the bus clock as timer */ diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c index 7cf3d207b6b3..4ade55c5f333 100644 --- a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c +++ b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c @@ -521,7 +521,7 @@ static int check_supported_cpu(unsigned int cpu) if ((eax & CPUID_XFAM) == CPUID_XFAM_K8) { if (((eax & CPUID_USE_XFAM_XMOD) != CPUID_USE_XFAM_XMOD) || - ((eax & CPUID_XMOD) > CPUID_XMOD_REV_G)) { + ((eax & CPUID_XMOD) > CPUID_XMOD_REV_MASK)) { printk(KERN_INFO PFX "Processor cpuid %x not supported\n", eax); goto out; } diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k8.h b/arch/i386/kernel/cpu/cpufreq/powernow-k8.h index 95be5013c984..b06c812208ca 100644 --- a/arch/i386/kernel/cpu/cpufreq/powernow-k8.h +++ b/arch/i386/kernel/cpu/cpufreq/powernow-k8.h @@ -46,8 +46,8 @@ struct powernow_k8_data { #define CPUID_XFAM 0x0ff00000 /* extended family */ #define CPUID_XFAM_K8 0 #define CPUID_XMOD 0x000f0000 /* extended model */ -#define CPUID_XMOD_REV_G 0x00060000 -#define CPUID_XFAM_10H 0x00100000 /* family 0x10 */ +#define CPUID_XMOD_REV_MASK 0x00080000 +#define CPUID_XFAM_10H 0x00100000 /* family 0x10 */ #define CPUID_USE_XFAM_XMOD 0x00000f00 #define CPUID_GET_MAX_CAPABILITIES 0x80000000 #define CPUID_FREQ_VOLT_CAPABILITIES 0x80000007 |