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

* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] sets nforce2 minimum PLL divider to 2.
  [CPUFREQ] Make powernow-k7 work on SMP kernels.
  [CPUFREQ] cpufreq core {d,}printk adjustments
  [CPUFREQ] dprintk adjustments to cpufreq-speedstep-centrino
  [CPUFREQ] dprintk adjustments to cpufreq-nforce2
  [CPUFREQ] Prepare powernow-k8 for future CPUs.
  [CPUFREQ] Make acpi-cpufreq 'sticky'.
  [CPUFREQ] Remove strange No-op from longrun.c
  [CPUFREQ] Remove more freq_table reinitialisations.
  [CPUFREQ] Fix another redundant initialisation in freq_table
  [CPUFREQ] Remove duplicate assignment in freq_table
  [CPUFREQ] CodingStyle nits in cpufreq_stats.c
  [CPUFREQ] Remove duplicate assignment from cpufreq-nforce2
  [CPUFREQ] Remove pointless reinitialisations in acpi-cpufreq
  [CPUFREQ] Remove pointless reinitialisation from powernow-k8
  [CPUFREQ] Remove redundant initialisation from longhaul.
  [CPUFREQ] Clean up longhaul's speed pretty-printer
  [CPUFREQ] Disambiguate loop indexes in powernow-k7
  [CPUFREQ] Typo in powernow-k8

arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c

@@ -104,7 +104,7 @@ acpi_processor_set_performance (
 {
 	u16			port = 0;
 	u8			bit_width = 0;
-	int			ret = 0;
+	int			ret;
 	u32			value = 0;
 	int			i = 0;
 	struct cpufreq_freqs    cpufreq_freqs;
@@ -195,7 +195,6 @@ acpi_processor_set_performance (
 			udelay(10);
 		}
 	} else {
-		i = 0;
 		value = (u32) data->acpi_data.states[state].status;
 	}
 
@@ -452,6 +451,7 @@ static struct cpufreq_driver acpi_cpufreq_driver = {
 	.name	= "acpi-cpufreq",
 	.owner	= THIS_MODULE,
 	.attr	= acpi_cpufreq_attr,
+	.flags	= CPUFREQ_STICKY,
 };
 
 

arch/i386/kernel/cpu/cpufreq/cpufreq-nforce2.c

 /*
- * (C) 2004  Sebastian Witt <se.witt@gmx.net>
+ * (C) 2004-2006  Sebastian Witt <se.witt@gmx.net>
  *
  *  Licensed under the terms of the GNU GPL License version 2.
  *  Based upon reverse engineered information
@@ -90,7 +90,7 @@ static int nforce2_calc_pll(unsigned int fsb)
 
 	/* Try to calculate multiplier and divider up to 4 times */
 	while (((mul == 0) || (div == 0)) && (tried <= 3)) {
-		for (xdiv = 1; xdiv <= 0x80; xdiv++)
+		for (xdiv = 2; xdiv <= 0x80; xdiv++)
 			for (xmul = 1; xmul <= 0xfe; xmul++)
 				if (nforce2_calc_fsb(NFORCE2_PLL(xmul, xdiv)) ==
 				    fsb + tried) {
@@ -117,8 +117,7 @@ static void nforce2_write_pll(int pll)
 	int temp;
 
 	/* Set the pll addr. to 0x00 */
-	temp = 0x00;
-	pci_write_config_dword(nforce2_chipset_dev, NFORCE2_PLLADR, temp);
+	pci_write_config_dword(nforce2_chipset_dev, NFORCE2_PLLADR, 0);
 
 	/* Now write the value in all 64 registers */
 	for (temp = 0; temp <= 0x3f; temp++)
@@ -266,7 +265,7 @@ static int nforce2_target(struct cpufreq_policy *policy,
 	if (freqs.old == freqs.new)
 		return 0;
 
-	dprintk(KERN_INFO "cpufreq: Old CPU frequency %d kHz, new %d kHz\n",
+	dprintk("Old CPU frequency %d kHz, new %d kHz\n",
 	       freqs.old, freqs.new);
 
 	cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
@@ -278,7 +277,7 @@ static int nforce2_target(struct cpufreq_policy *policy,
 		printk(KERN_ERR "cpufreq: Changing FSB to %d failed\n",
                        target_fsb);
 	else
-		dprintk(KERN_INFO "cpufreq: Changed FSB successfully to %d\n",
+		dprintk("Changed FSB successfully to %d\n",
                        target_fsb);
 
 	/* Enable IRQs */

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

@@ -77,13 +77,17 @@ static char speedbuffer[8];
 
 static char *print_speed(int speed)
 {
-	if (speed > 1000) {
+	if (speed < 1000) {
+		snprintf(speedbuffer, sizeof(speedbuffer),"%dMHz", speed);
+		return speedbuffer;
+	}
+
 	if (speed%1000 == 0)
-			sprintf (speedbuffer, "%dGHz", speed/1000);
+		snprintf(speedbuffer, sizeof(speedbuffer),
+			"%dGHz", speed/1000);
 	else
-			sprintf (speedbuffer, "%d.%dGHz", speed/1000, (speed%1000)/100);
-	} else
-		sprintf (speedbuffer, "%dMHz", speed);
+		snprintf(speedbuffer, sizeof(speedbuffer),
+			"%d.%dGHz", speed/1000, (speed%1000)/100);
 
 	return speedbuffer;
 }
@@ -675,7 +679,7 @@ static int __init longhaul_init(void)
 
 static void __exit longhaul_exit(void)
 {
-	int i=0;
+	int i;
 
 	for (i=0; i < numscales; i++) {
 		if (clock_ratio[i] == maxmult) {

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

@@ -223,7 +223,6 @@ static unsigned int __init longrun_determine_freqs(unsigned int *low_freq,
 		/* set to 0 to try_hi perf_pctg */
 		msr_lo &= 0xFFFFFF80;
 		msr_hi &= 0xFFFFFF80;
-		msr_lo |= 0;
 		msr_hi |= try_hi;
 		wrmsr(MSR_TMTA_LONGRUN_CTRL, msr_lo, msr_hi);
 

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

@@ -452,23 +452,23 @@ static int powernow_decode_bios (int maxfid, int startvid)
 
 			pst = (struct pst_s *) p;
 
-			for (i = 0 ; i <psb->numpst; i++) {
+			for (j=0; j<psb->numpst; j++) {
 				pst = (struct pst_s *) p;
 				number_scales = pst->numpstates;
 
 				if ((etuple == pst->cpuid) && check_fsb(pst->fsbspeed) &&
 				    (maxfid==pst->maxfid) && (startvid==pst->startvid))
 				{
-					dprintk ("PST:%d (@%p)\n", i, pst);
+					dprintk ("PST:%d (@%p)\n", j, pst);
 					dprintk (" cpuid: 0x%x  fsb: %d  maxFID: 0x%x  startvid: 0x%x\n",
 						 pst->cpuid, pst->fsbspeed, pst->maxfid, pst->startvid);
 
 					ret = get_ranges ((char *) pst + sizeof (struct pst_s));
 					return ret;
-
 				} else {
+					unsigned int k;
 					p = (char *) pst + sizeof (struct pst_s);
-					for (j=0 ; j < number_scales; j++)
+					for (k=0; k<number_scales; k++)
 						p+=2;
 				}
 			}
@@ -581,10 +581,7 @@ static int __init powernow_cpu_init (struct cpufreq_policy *policy)
 
 	rdmsrl (MSR_K7_FID_VID_STATUS, fidvidstatus.val);
 
-	/* recalibrate cpu_khz */
-	result = recalibrate_cpu_khz();
-	if (result)
-		return result;
+	recalibrate_cpu_khz();
 
 	fsb = (10 * cpu_khz) / fid_codes[fidvidstatus.bits.CFID];
 	if (!fsb) {

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

 /*
- *  (c) 2003, 2004, 2005 Advanced Micro Devices, Inc.
+ *  (c) 2003-2006 Advanced Micro Devices, Inc.
  *  Your use of this code is subject to the terms and conditions of the
  *  GNU general public license version 2. See "COPYING" or
  *  http://www.gnu.org/licenses/gpl.html
@@ -21,8 +21,8 @@ struct powernow_k8_data {
 	u32 plllock; /* pll lock time, units 1 us */
         u32 exttype; /* extended interface = 1 */
 
-	/* keep track of the current fid / vid */
-	u32 currvid, currfid;
+	/* keep track of the current fid / vid or did */
+	u32 currvid, currfid, currdid;
 
 	/* the powernow_table includes all frequency and vid/fid pairings:
 	 * fid are the lower 8 bits of the index, vid are the upper 8 bits.
@@ -34,6 +34,10 @@ struct powernow_k8_data {
 	 * used to determine valid frequency/vid/fid states */
 	struct acpi_processor_performance acpi_data;
 #endif
+	/* we need to keep track of associated cores, but let cpufreq
+	 * handle hotplug events - so just point at cpufreq pol->cpus
+	 * structure */
+	cpumask_t *available_cores;
 };
 
 
@@ -43,6 +47,7 @@ struct powernow_k8_data {
 #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_USE_XFAM_XMOD		0x00000f00
 #define CPUID_GET_MAX_CAPABILITIES	0x80000000
 #define CPUID_FREQ_VOLT_CAPABILITIES	0x80000007
@@ -79,6 +84,32 @@ struct powernow_k8_data {
 #define MSR_S_HI_CURRENT_VID      0x0000003f
 #define MSR_C_HI_STP_GNT_BENIGN	  0x00000001
 
+
+/* Hardware Pstate _PSS and MSR definitions */
+#define USE_HW_PSTATE		0x00000080
+#define HW_PSTATE_FID_MASK 	0x0000003f
+#define HW_PSTATE_DID_MASK 	0x000001c0
+#define HW_PSTATE_DID_SHIFT 	6
+#define HW_PSTATE_MASK 		0x00000007
+#define HW_PSTATE_VALID_MASK 	0x80000000
+#define HW_FID_INDEX_SHIFT	8
+#define HW_FID_INDEX_MASK	0x0000ff00
+#define HW_DID_INDEX_SHIFT	16
+#define HW_DID_INDEX_MASK	0x00ff0000
+#define HW_WATTS_MASK		0xff
+#define HW_PWR_DVR_MASK		0x300
+#define HW_PWR_DVR_SHIFT	8
+#define HW_PWR_MAX_MULT		3
+#define MAX_HW_PSTATE		8	/* hw pstate supports up to 8 */
+#define MSR_PSTATE_DEF_BASE 	0xc0010064 /* base of Pstate MSRs */
+#define MSR_PSTATE_STATUS 	0xc0010063 /* Pstate Status MSR */
+#define MSR_PSTATE_CTRL 	0xc0010062 /* Pstate control MSR */
+
+/* define the two driver architectures */
+#define CPU_OPTERON 0
+#define CPU_HW_PSTATE 1
+
+
 /*
  * There are restrictions frequencies have to follow:
  * - only 1 entry in the low fid table ( <=1.4GHz )
@@ -182,6 +213,9 @@ static int core_frequency_transition(struct powernow_k8_data *data, u32 reqfid);
 
 static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned int index);
 
+static int fill_powernow_table_pstate(struct powernow_k8_data *data, struct cpufreq_frequency_table *powernow_table);
+static int fill_powernow_table_fidvid(struct powernow_k8_data *data, struct cpufreq_frequency_table *powernow_table);
+
 #ifdef CONFIG_SMP
 static inline void define_siblings(int cpu, cpumask_t cpu_sharedcore_mask[])
 {

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

@@ -250,7 +250,7 @@ static int centrino_cpu_init_table(struct cpufreq_policy *policy)
 
 	if (model->cpu_id == NULL) {
 		/* No match at all */
-		dprintk(KERN_INFO PFX "no support for CPU model \"%s\": "
+		dprintk("no support for CPU model \"%s\": "
 		       "send /proc/cpuinfo to " MAINTAINER "\n",
 		       cpu->x86_model_id);
 		return -ENOENT;
@@ -258,10 +258,10 @@ static int centrino_cpu_init_table(struct cpufreq_policy *policy)
 
 	if (model->op_points == NULL) {
 		/* Matched a non-match */
-		dprintk(KERN_INFO PFX "no table support for CPU model \"%s\"\n",
+		dprintk("no table support for CPU model \"%s\"\n",
 		       cpu->x86_model_id);
 #ifndef CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI
-		dprintk(KERN_INFO PFX "try compiling with CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI enabled\n");
+		dprintk("try compiling with CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI enabled\n");
 #endif
 		return -ENOENT;
 	}
@@ -368,7 +368,7 @@ static int centrino_cpu_init_acpi(struct cpufreq_policy *policy)
 
 	/* register with ACPI core */
 	if (acpi_processor_register_performance(&p, cpu)) {
-		dprintk(KERN_INFO PFX "obtaining ACPI data failed\n");
+		dprintk("obtaining ACPI data failed\n");
 		return -EIO;
 	}
 
@@ -465,7 +465,7 @@ static int centrino_cpu_init_acpi(struct cpufreq_policy *policy)
 	kfree(centrino_model[cpu]);
  err_unreg:
 	acpi_processor_unregister_performance(&p, cpu);
-	dprintk(KERN_INFO PFX "invalid ACPI data\n");
+	dprintk("invalid ACPI data\n");
 	return (result);
 }
 #else
@@ -499,7 +499,7 @@ static int centrino_cpu_init(struct cpufreq_policy *policy)
 			centrino_cpu[policy->cpu] = &cpu_ids[i];
 
 		if (!centrino_cpu[policy->cpu]) {
-			dprintk(KERN_INFO PFX "found unsupported CPU with "
+			dprintk("found unsupported CPU with "
 			"Enhanced SpeedStep: send /proc/cpuinfo to "
 			MAINTAINER "\n");
 			return -ENODEV;

drivers/cpufreq/cpufreq.c

@@ -257,7 +257,7 @@ void cpufreq_notify_transition(struct cpufreq_freqs *freqs, unsigned int state)
 		if (!(cpufreq_driver->flags & CPUFREQ_CONST_LOOPS)) {
 			if ((policy) && (policy->cpu == freqs->cpu) &&
 			    (policy->cur) && (policy->cur != freqs->old)) {
-				dprintk(KERN_WARNING "Warning: CPU frequency is"
+				dprintk("Warning: CPU frequency is"
 					" %u, cpufreq assumed %u kHz.\n",
 					freqs->old, policy->cur);
 				freqs->old = policy->cur;
@@ -874,7 +874,7 @@ static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq, unsigne
 {
 	struct cpufreq_freqs freqs;
 
-	dprintk(KERN_WARNING "Warning: CPU frequency out of sync: cpufreq and timing "
+	dprintk("Warning: CPU frequency out of sync: cpufreq and timing "
 	       "core thinks of %u, is %u kHz.\n", old_freq, new_freq);
 
 	freqs.cpu = cpu;
@@ -1006,7 +1006,7 @@ static int cpufreq_suspend(struct sys_device * sysdev, pm_message_t pmsg)
 		struct cpufreq_freqs freqs;
 
 		if (!(cpufreq_driver->flags & CPUFREQ_PM_NO_WARN))
-			dprintk(KERN_DEBUG "Warning: CPU frequency is %u, "
+			dprintk("Warning: CPU frequency is %u, "
 			       "cpufreq assumed %u kHz.\n",
 			       cur_freq, cpu_policy->cur);
 
@@ -1087,7 +1087,7 @@ static int cpufreq_resume(struct sys_device * sysdev)
 			struct cpufreq_freqs freqs;
 
 			if (!(cpufreq_driver->flags & CPUFREQ_PM_NO_WARN))
-				dprintk(KERN_WARNING "Warning: CPU frequency"
+				dprintk("Warning: CPU frequency"
 				       "is %u, cpufreq assumed %u kHz.\n",
 				       cur_freq, cpu_policy->cur);
 

drivers/cpufreq/cpufreq_stats.c

@@ -74,7 +74,7 @@ static ssize_t
 show_total_trans(struct cpufreq_policy *policy, char *buf)
 {
 	struct cpufreq_stats *stat = cpufreq_stats_table[policy->cpu];
-	if(!stat)
+	if (!stat)
 		return 0;
 	return sprintf(buf, "%d\n",
 			cpufreq_stats_table[stat->cpu]->total_trans);
@@ -86,7 +86,7 @@ show_time_in_state(struct cpufreq_policy *policy, char *buf)
 	ssize_t len = 0;
 	int i;
 	struct cpufreq_stats *stat = cpufreq_stats_table[policy->cpu];
-	if(!stat)
+	if (!stat)
 		return 0;
 	cpufreq_stats_update(stat->cpu);
 	for (i = 0; i < stat->state_num; i++) {
@@ -104,7 +104,7 @@ show_trans_table(struct cpufreq_policy *policy, char *buf)
 	int i, j;
 
 	struct cpufreq_stats *stat = cpufreq_stats_table[policy->cpu];
-	if(!stat)
+	if (!stat)
 		return 0;
 	cpufreq_stats_update(stat->cpu);
 	len += snprintf(buf + len, PAGE_SIZE - len, "   From  :    To\n");

drivers/cpufreq/freq_table.c

@@ -20,7 +20,7 @@ int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
 {
 	unsigned int min_freq = ~0;
 	unsigned int max_freq = 0;
-	unsigned int i = 0;
+	unsigned int i;
 
 	for (i=0; (table[i].frequency != CPUFREQ_TABLE_END); i++) {
 		unsigned int freq = table[i].frequency;
@@ -51,7 +51,7 @@ int cpufreq_frequency_table_verify(struct cpufreq_policy *policy,
 				   struct cpufreq_frequency_table *table)
 {
 	unsigned int next_larger = ~0;
-	unsigned int i = 0;
+	unsigned int i;
 	unsigned int count = 0;
 
 	dprintk("request for verification of policy (%u - %u kHz) for cpu %u\n", policy->min, policy->max, policy->cpu);
@@ -91,20 +91,24 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
 				   unsigned int relation,
 				   unsigned int *index)
 {
-	struct cpufreq_frequency_table optimal = { .index = ~0, };
-	struct cpufreq_frequency_table suboptimal = { .index = ~0, };
+	struct cpufreq_frequency_table optimal = {
+		.index = ~0,
+		.frequency = 0,
+	};
+	struct cpufreq_frequency_table suboptimal = {
+		.index = ~0,
+		.frequency = 0,
+	};
 	unsigned int i;
 
 	dprintk("request for target %u kHz (relation: %u) for cpu %u\n", target_freq, relation, policy->cpu);
 
 	switch (relation) {
 	case CPUFREQ_RELATION_H:
-		optimal.frequency = 0;
 		suboptimal.frequency = ~0;
 		break;
 	case CPUFREQ_RELATION_L:
 		optimal.frequency = ~0;
-		suboptimal.frequency = 0;
 		break;
 	}