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Commit 1ca9bc4f authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq 

* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] Correct revision mask for powernow-k8
  [CPUFREQ] powernow-k7: fix MHz rounding issue with perflib
  [CPUFREQ] Support rev H AMD64s in powernow-k8
parents f653c34d 99fbe1ac

arch/i386/kernel/cpu/cpufreq/powernow-k7.c

+28 −8
Original line number Diff line number Diff line
@@ -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 */

arch/i386/kernel/cpu/cpufreq/powernow-k8.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

		}

arch/i386/kernel/cpu/cpufreq/powernow-k8.h

+2 −2
Original line number Diff line number Diff line
@@ -46,7 +46,7 @@ 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_XMOD_REV_MASK		0x00080000

#define CPUID_XFAM_10H			0x00100000	/* family 0x10 */

#define CPUID_USE_XFAM_XMOD		0x00000f00

#define CPUID_GET_MAX_CAPABILITIES	0x80000000