Merge delerium.codemonkey.org.uk:/mnt/data/src/bk/bk-linus

into delerium.codemonkey.org.uk:/mnt/data/src/bk/cpufreq

arch/i386/kernel/cpu/cpufreq/longrun.c

@@ -7,7 +7,7 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/module.h> 
+#include <linux/module.h>
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/cpufreq.h>
@@ -19,7 +19,7 @@
 static struct cpufreq_driver	longrun_driver;
 
 /**
- * longrun_{low,high}_freq is needed for the conversion of cpufreq kHz 
+ * longrun_{low,high}_freq is needed for the conversion of cpufreq kHz
  * values into per cent values. In TMTA microcode, the following is valid:
  * performance_pctg = (current_freq - low_freq)/(high_freq - low_freq)
  */
@@ -42,18 +42,18 @@ static void __init longrun_get_policy(struct cpufreq_policy *policy)
 		policy->policy = CPUFREQ_POLICY_PERFORMANCE;
 	else
 		policy->policy = CPUFREQ_POLICY_POWERSAVE;
-	
+
 	rdmsr(MSR_TMTA_LONGRUN_CTRL, msr_lo, msr_hi);
 	msr_lo &= 0x0000007F;
 	msr_hi &= 0x0000007F;
-	
+
 	if ( longrun_high_freq <= longrun_low_freq ) {
 		/* Assume degenerate Longrun table */
 		policy->min = policy->max = longrun_high_freq;
 	} else {
-		policy->min = longrun_low_freq + msr_lo * 
+		policy->min = longrun_low_freq + msr_lo *
 			((longrun_high_freq - longrun_low_freq) / 100);
-		policy->max = longrun_low_freq + msr_hi * 
+		policy->max = longrun_low_freq + msr_hi *
 			((longrun_high_freq - longrun_low_freq) / 100);
 	}
 	policy->cpu = 0;
@@ -79,9 +79,9 @@ static int longrun_set_policy(struct cpufreq_policy *policy)
 		/* Assume degenerate Longrun table */
 		pctg_lo = pctg_hi = 100;
 	} else {
-		pctg_lo = (policy->min - longrun_low_freq) / 
+		pctg_lo = (policy->min - longrun_low_freq) /
 			((longrun_high_freq - longrun_low_freq) / 100);
-		pctg_hi = (policy->max - longrun_low_freq) / 
+		pctg_hi = (policy->max - longrun_low_freq) /
 			((longrun_high_freq - longrun_low_freq) / 100);
 	}
 
@@ -118,7 +118,7 @@ static int longrun_set_policy(struct cpufreq_policy *policy)
  * longrun_verify_poliy - verifies a new CPUFreq policy
  * @policy: the policy to verify
  *
- * Validates a new CPUFreq policy. This function has to be called with 
+ * Validates a new CPUFreq policy. This function has to be called with
  * cpufreq_driver locked.
  */
 static int longrun_verify_policy(struct cpufreq_policy *policy)
@@ -127,8 +127,8 @@ static int longrun_verify_policy(struct cpufreq_policy *policy)
 		return -EINVAL;
 
 	policy->cpu = 0;
-	cpufreq_verify_within_limits(policy, 
-		policy->cpuinfo.min_freq, 
+	cpufreq_verify_within_limits(policy,
+		policy->cpuinfo.min_freq,
 		policy->cpuinfo.max_freq);
 
 	if ((policy->policy != CPUFREQ_POLICY_POWERSAVE) &&
@@ -160,7 +160,7 @@ static unsigned int longrun_get(unsigned int cpu)
  * TMTA rules:
  * performance_pctg = (target_freq - low_freq)/(high_freq - low_freq)
  */
-static unsigned int __init longrun_determine_freqs(unsigned int *low_freq, 
+static unsigned int __init longrun_determine_freqs(unsigned int *low_freq,
 						   unsigned int *high_freq)
 {
 	u32 msr_lo, msr_hi;
@@ -174,9 +174,9 @@ static unsigned int __init longrun_determine_freqs(unsigned int *low_freq,
 
 	if (cpu_has(c, X86_FEATURE_LRTI)) {
 		/* if the LongRun Table Interface is present, the
-		 * detection is a bit easier: 
+		 * detection is a bit easier:
 		 * For minimum frequency, read out the maximum
-		 * level (msr_hi), write that into "currently 
+		 * level (msr_hi), write that into "currently
 		 * selected level", and read out the frequency.
 		 * For maximum frequency, read out level zero.
 		 */
@@ -223,7 +223,7 @@ static unsigned int __init longrun_determine_freqs(unsigned int *low_freq,
 		cpuid(0x80860007, &eax, &ebx, &ecx, &edx);
 
 		/* restore values */
-		wrmsr(MSR_TMTA_LONGRUN_CTRL, save_lo, save_hi);	
+		wrmsr(MSR_TMTA_LONGRUN_CTRL, save_lo, save_hi);
 	}
 
 	/* performance_pctg = (current_freq - low_freq)/(high_freq - low_freq)
@@ -237,7 +237,7 @@ static unsigned int __init longrun_determine_freqs(unsigned int *low_freq,
 	if ((ecx > 95) || (ecx == 0) || (eax < ebx))
 		return -EIO;
 
-	edx = (eax - ebx) / (100 - ecx); 
+	edx = (eax - ebx) / (100 - ecx);
 	*low_freq = edx * 1000; /* back to kHz */
 
 	if (*low_freq > *high_freq)
@@ -249,7 +249,7 @@ static unsigned int __init longrun_determine_freqs(unsigned int *low_freq,
 
 static int __init longrun_cpu_init(struct cpufreq_policy *policy)
 {
-	int                     result = 0;
+	int result = 0;
 
 	/* capability check */
 	if (policy->cpu != 0)
@@ -265,15 +265,15 @@ static int __init longrun_cpu_init(struct cpufreq_policy *policy)
 	policy->cpuinfo.max_freq = longrun_high_freq;
 	policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
 	longrun_get_policy(policy);
-	
+
 	return 0;
 }
 
 
 static struct cpufreq_driver longrun_driver = {
 	.flags		= CPUFREQ_CONST_LOOPS,
-	.verify 	= longrun_verify_policy,
-	.setpolicy 	= longrun_set_policy,
+	.verify		= longrun_verify_policy,
+	.setpolicy	= longrun_set_policy,
 	.get		= longrun_get,
 	.init		= longrun_cpu_init,
 	.name		= "longrun",
@@ -290,7 +290,7 @@ static int __init longrun_init(void)
 {
 	struct cpuinfo_x86 *c = cpu_data;
 
-	if (c->x86_vendor != X86_VENDOR_TRANSMETA || 
+	if (c->x86_vendor != X86_VENDOR_TRANSMETA ||
 	    !cpu_has(c, X86_FEATURE_LONGRUN))
 		return -ENODEV;
 

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

@@ -6,8 +6,6 @@
  *  Licensed under the terms of the GNU GPL License version 2.
  *  Based upon datasheets & sample CPUs kindly provided by AMD.
  *
- *  BIG FAT DISCLAIMER: Work in progress code. Possibly *dangerous*
- *
  * Errata 5: Processor may fail to execute a FID/VID change in presence of interrupt.
  * - We cli/sti on stepping A0 CPUs around the FID/VID transition.
  * Errata 15: Processors with half frequency multipliers may hang upon wakeup from disconnect.
@@ -36,14 +34,6 @@
 
 #include "powernow-k7.h"
 
-#define DEBUG
-
-#ifdef DEBUG
-#define dprintk(msg...) printk(msg)
-#else
-#define dprintk(msg...) do { } while(0)
-#endif
-
 #define PFX "powernow: "
 
 
@@ -97,6 +87,7 @@ static int fid_codes[32] = {
  */
 
 static int acpi_force;
+static int debug;
 
 static struct cpufreq_frequency_table *powernow_table;
 
@@ -109,6 +100,21 @@ static unsigned int fsb;
 static unsigned int latency;
 static char have_a0;
 
+static void dprintk(const char *fmt, ...)
+{
+	char s[256];
+	va_list args;
+
+	if (debug==0)
+		return;
+
+	va_start(args,fmt);
+	vsprintf(s, fmt, args);
+	printk(s);
+	va_end(args);
+}
+
+
 static int check_fsb(unsigned int fsbspeed)
 {
 	int delta;
@@ -196,7 +202,7 @@ static int get_ranges (unsigned char *pst)
 #endif
 		}
 
-		dprintk (KERN_INFO PFX "   FID: 0x%x (%d.%dx [%dMHz])\t", fid,
+		dprintk (KERN_INFO PFX "   FID: 0x%x (%d.%dx [%dMHz])  ", fid,
 			fid_codes[fid] / 10, fid_codes[fid] % 10, speed/1000);
 
 		if (speed < minimum_speed)
@@ -285,7 +291,7 @@ static void change_speed (unsigned int index)
 		change_VID(vid);
 		change_FID(fid);
 	}
-	
+
 
 	if (have_a0 == 1)
 		local_irq_enable();
@@ -377,7 +383,7 @@ static int powernow_acpi_init(void)
 				powernow_table[i].frequency = CPUFREQ_ENTRY_INVALID;
 		}
 
-		dprintk (KERN_INFO PFX "   FID: 0x%x (%d.%dx [%dMHz])\t", fid,
+		dprintk (KERN_INFO PFX "   FID: 0x%x (%d.%dx [%dMHz])  ", fid,
 			fid_codes[fid] / 10, fid_codes[fid] % 10, speed/1000);
 		dprintk ("VID: 0x%x (%d.%03dV)\n", vid,	mobile_vid_table[vid]/1000,
 			mobile_vid_table[vid]%1000);
@@ -467,9 +473,9 @@ static int powernow_decode_bios (int maxfid, int startvid)
 				    (maxfid==pst->maxfid) && (startvid==pst->startvid))
 				{
 					dprintk (KERN_INFO PFX "PST:%d (@%p)\n", i, pst);
-					dprintk (KERN_INFO PFX " cpuid: 0x%x\t", pst->cpuid);
-					dprintk ("fsb: %d\t", pst->fsbspeed);
-					dprintk ("maxFID: 0x%x\t", pst->maxfid);
+					dprintk (KERN_INFO PFX " cpuid: 0x%x  ", pst->cpuid);
+					dprintk ("fsb: %d  ", pst->fsbspeed);
+					dprintk ("maxFID: 0x%x  ", pst->maxfid);
 					dprintk ("startvid: 0x%x\n", pst->startvid);
 
 					ret = get_ranges ((char *) pst + sizeof (struct pst_s));
@@ -591,7 +597,7 @@ static int __init powernow_cpu_init (struct cpufreq_policy *policy)
 	rdmsrl (MSR_K7_FID_VID_STATUS, fidvidstatus.val);
 
 	/* A K7 with powernow technology is set to max frequency by BIOS */
-	fsb = (10 * cpu_khz) / fid_codes[fidvidstatus.bits.CFID];
+	fsb = (10 * cpu_khz) / fid_codes[fidvidstatus.bits.MFID];
 	if (!fsb) {
 		printk(KERN_WARNING PFX "can not determine bus frequency\n");
 		return -EINVAL;
@@ -648,14 +654,14 @@ static struct freq_attr* powernow_table_attr[] = {
 };
 
 static struct cpufreq_driver powernow_driver = {
-	.verify 	= powernow_verify,
-	.target 	= powernow_target,
-	.get		= powernow_get,	
-	.init		= powernow_cpu_init,
-	.exit		= powernow_cpu_exit,
-	.name		= "powernow-k7",
-	.owner		= THIS_MODULE,
-	.attr		= powernow_table_attr,
+	.verify	= powernow_verify,
+	.target	= powernow_target,
+	.get	= powernow_get,
+	.init	= powernow_cpu_init,
+	.exit	= powernow_cpu_exit,
+	.name	= "powernow-k7",
+	.owner	= THIS_MODULE,
+	.attr	= powernow_table_attr,
 };
 
 static int __init powernow_init (void)
@@ -679,8 +685,10 @@ static void __exit powernow_exit (void)
 		kfree(powernow_table);
 }
 
+module_param(debug, int, 0444);
+MODULE_PARM_DESC(debug, "enable debug output.");
 module_param(acpi_force,  int, 0444);
-MODULE_PARM_DESC(acpi_force, "Force ACPI to be used");
+MODULE_PARM_DESC(acpi_force, "Force ACPI to be used.");
 
 MODULE_AUTHOR ("Dave Jones <davej@codemonkey.org.uk>");
 MODULE_DESCRIPTION ("Powernow driver for AMD K7 processors.");

arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c

@@ -60,6 +60,13 @@ static const struct cpu_id cpu_id_dothan_a1 = {
 	.x86_mask = 1,
 };
 
+static const struct cpu_id cpu_id_dothan_b0 = {
+	.x86_vendor = X86_VENDOR_INTEL,
+	.x86 = 6,
+	.x86_model = 13,
+	.x86_mask = 6,
+};
+
 struct cpu_model
 {
 	const struct cpu_id *cpu_id;
@@ -214,7 +221,7 @@ static struct cpu_model models[] =
 	BANIAS(1500),
 	BANIAS(1600),
 	BANIAS(1700),
-	{ 0, }
+	{ NULL, }
 };
 #undef _BANIAS
 #undef BANIAS
@@ -400,7 +407,8 @@ static int centrino_cpu_init(struct cpufreq_policy *policy)
 		return -ENODEV;
 
 	if ((centrino_verify_cpu_id(cpu, &cpu_id_banias)) &&
-	    (centrino_verify_cpu_id(cpu, &cpu_id_dothan_a1))) {
+	    (centrino_verify_cpu_id(cpu, &cpu_id_dothan_a1)) &&
+		(centrino_verify_cpu_id(cpu, &cpu_id_dothan_b0))) {
 		printk(KERN_INFO PFX "found unsupported CPU with Enhanced SpeedStep: "
 		       "send /proc/cpuinfo to " MAINTAINER "\n");
 		return -ENODEV;

drivers/cpufreq/cpufreq.c

@@ -617,8 +617,8 @@ static int cpufreq_resume(struct sys_device * sysdev)
 			if (cpufreq_driver->flags & CPUFREQ_PANIC_RESUME_OUTOFSYNC)
 				panic("CPU Frequency is out of sync.");
 
-			printk(KERN_WARNING "Warning: CPU frequency out of sync: cpufreq and timing"
-			       "core thinks of %u, is %u kHz.\n", cpu_policy->cur, cur_freq);
+			printk(KERN_WARNING "Warning: CPU frequency is %u, "
+			       "cpufreq assumed %u kHz.\n", cur_freq, cpu_policy->cur);
 
 			freqs.cpu = cpu;
 			freqs.old = cpu_policy->cur;
@@ -626,6 +626,8 @@ static int cpufreq_resume(struct sys_device * sysdev)
 
 			notifier_call_chain(&cpufreq_transition_notifier_list, CPUFREQ_RESUMECHANGE, &freqs);
 			adjust_jiffies(CPUFREQ_RESUMECHANGE, &freqs);
+
+			cpu_policy->cur = cur_freq;
 		}
 	}
 
@@ -1065,9 +1067,8 @@ void cpufreq_notify_transition(struct cpufreq_freqs *freqs, unsigned int state)
 				if (cpufreq_driver->flags & CPUFREQ_PANIC_OUTOFSYNC)
 					panic("CPU Frequency is out of sync.");
 
-				printk(KERN_WARNING "Warning: CPU frequency out of sync: "
-				       "cpufreq and timing core thinks of %u, is %u kHz.\n", 
-				       cpufreq_cpu_data[freqs->cpu]->cur, freqs->old);
+				printk(KERN_WARNING "Warning: CPU frequency is %u, "
+				       "cpufreq assumed %u kHz.\n", freqs->old, cpufreq_cpu_data[freqs->cpu]->cur);
 				freqs->old = cpufreq_cpu_data[freqs->cpu]->cur;
 			}
 		}

drivers/cpufreq/cpufreq_userspace.c

@@ -82,6 +82,13 @@ userspace_cpufreq_notifier(struct notifier_block *nb, unsigned long val,
 {
         struct cpufreq_freqs *freq = data;
 
+	/* Don't update cur_freq if CPU is managed and we're
+	 * waking up: else we won't remember what frequency 
+	 * we need to set the CPU to.
+	 */
+	if (cpu_is_managed[freq->cpu] && (val == CPUFREQ_RESUMECHANGE))
+		return 0;
+
 	cpu_cur_freq[freq->cpu] = freq->new;
 
         return 0;
@@ -522,6 +529,9 @@ static int cpufreq_governor_userspace(struct cpufreq_policy *policy,
 		else if (policy->min > cpu_cur_freq[cpu])
 			__cpufreq_driver_target(&current_policy[cpu], policy->min, 
 			      CPUFREQ_RELATION_L);
+		else
+			__cpufreq_driver_target(&current_policy[cpu], cpu_cur_freq[cpu],
+			      CPUFREQ_RELATION_L);
 		memcpy (&current_policy[cpu], policy, sizeof(struct cpufreq_policy));
 		up(&userspace_sem);
 		break;