[PATCH] [4/4] powerpc: PA6T PMC support [v2]
Olof Johansson
olof at lixom.net
Mon Jan 29 14:25:57 EST 2007
Support for PA6T-style PMC registers.
PMCs are completely implementation-dependent on PPC, and PA6T numbers them
differently from the IBM model.
Signed-off-by: Olof Johansson <olof at lixom.net>
Index: merge/arch/powerpc/kernel/sysfs.c
===================================================================
--- merge.orig/arch/powerpc/kernel/sysfs.c
+++ merge/arch/powerpc/kernel/sysfs.c
@@ -169,6 +169,11 @@ static ssize_t __attribute_used__ \
return count; \
}
+
+/* Let's define all possible registers, we'll only hook up the ones
+ * that are implemented on the current processor
+ */
+
SYSFS_PMCSETUP(mmcr0, SPRN_MMCR0);
SYSFS_PMCSETUP(mmcr1, SPRN_MMCR1);
SYSFS_PMCSETUP(mmcra, SPRN_MMCRA);
@@ -184,55 +189,87 @@ SYSFS_PMCSETUP(purr, SPRN_PURR);
SYSFS_PMCSETUP(spurr, SPRN_SPURR);
SYSFS_PMCSETUP(dscr, SPRN_DSCR);
-static SYSDEV_ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0);
-static SYSDEV_ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1);
+SYSFS_PMCSETUP(pa6t_pmc0, PA6T_SPRN_PMC0);
+SYSFS_PMCSETUP(pa6t_pmc1, PA6T_SPRN_PMC1);
+SYSFS_PMCSETUP(pa6t_pmc2, PA6T_SPRN_PMC2);
+SYSFS_PMCSETUP(pa6t_pmc3, PA6T_SPRN_PMC3);
+SYSFS_PMCSETUP(pa6t_pmc4, PA6T_SPRN_PMC4);
+SYSFS_PMCSETUP(pa6t_pmc5, PA6T_SPRN_PMC5);
+
+
static SYSDEV_ATTR(mmcra, 0600, show_mmcra, store_mmcra);
-static SYSDEV_ATTR(pmc1, 0600, show_pmc1, store_pmc1);
-static SYSDEV_ATTR(pmc2, 0600, show_pmc2, store_pmc2);
-static SYSDEV_ATTR(pmc3, 0600, show_pmc3, store_pmc3);
-static SYSDEV_ATTR(pmc4, 0600, show_pmc4, store_pmc4);
-static SYSDEV_ATTR(pmc5, 0600, show_pmc5, store_pmc5);
-static SYSDEV_ATTR(pmc6, 0600, show_pmc6, store_pmc6);
-static SYSDEV_ATTR(pmc7, 0600, show_pmc7, store_pmc7);
-static SYSDEV_ATTR(pmc8, 0600, show_pmc8, store_pmc8);
-static SYSDEV_ATTR(purr, 0600, show_purr, NULL);
static SYSDEV_ATTR(spurr, 0600, show_spurr, NULL);
static SYSDEV_ATTR(dscr, 0600, show_dscr, store_dscr);
+static SYSDEV_ATTR(purr, 0600, show_purr, store_purr);
+
+static struct sysdev_attribute ibm_common_attrs[] = {
+ _SYSDEV_ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
+ _SYSDEV_ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
+};
+
+static struct sysdev_attribute ibm_pmc_attrs[] = {
+ _SYSDEV_ATTR(pmc1, 0600, show_pmc1, store_pmc1),
+ _SYSDEV_ATTR(pmc2, 0600, show_pmc2, store_pmc2),
+ _SYSDEV_ATTR(pmc3, 0600, show_pmc3, store_pmc3),
+ _SYSDEV_ATTR(pmc4, 0600, show_pmc4, store_pmc4),
+ _SYSDEV_ATTR(pmc5, 0600, show_pmc5, store_pmc5),
+ _SYSDEV_ATTR(pmc6, 0600, show_pmc6, store_pmc6),
+ _SYSDEV_ATTR(pmc7, 0600, show_pmc7, store_pmc7),
+ _SYSDEV_ATTR(pmc8, 0600, show_pmc8, store_pmc8),
+};
+
+static struct sysdev_attribute pa6t_attrs[] = {
+ _SYSDEV_ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
+ _SYSDEV_ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
+ _SYSDEV_ATTR(pmc0, 0600, show_pa6t_pmc0, store_pa6t_pmc0),
+ _SYSDEV_ATTR(pmc1, 0600, show_pa6t_pmc1, store_pa6t_pmc1),
+ _SYSDEV_ATTR(pmc2, 0600, show_pa6t_pmc2, store_pa6t_pmc2),
+ _SYSDEV_ATTR(pmc3, 0600, show_pa6t_pmc3, store_pa6t_pmc3),
+ _SYSDEV_ATTR(pmc4, 0600, show_pa6t_pmc4, store_pa6t_pmc4),
+ _SYSDEV_ATTR(pmc5, 0600, show_pa6t_pmc5, store_pa6t_pmc5),
+};
+
static void register_cpu_online(unsigned int cpu)
{
struct cpu *c = &per_cpu(cpu_devices, cpu);
struct sys_device *s = &c->sysdev;
+ struct sysdev_attribute *attrs, *pmc_attrs;
+ int i, nattrs;
if (!firmware_has_feature(FW_FEATURE_ISERIES) &&
cpu_has_feature(CPU_FTR_SMT))
sysdev_create_file(s, &attr_smt_snooze_delay);
/* PMC stuff */
+ switch (cur_cpu_spec->pmc_type) {
+ case PPC_PMC_IBM:
+ attrs = ibm_common_attrs;
+ nattrs = sizeof(ibm_common_attrs) / sizeof(struct sysdev_attribute);
+ pmc_attrs = ibm_pmc_attrs;
+ break;
+ case PPC_PMC_PA6T:
+ /* PA Semi starts counting at PMC0 */
+ attrs = pa6t_attrs;
+ nattrs = sizeof(pa6t_attrs) / sizeof(struct sysdev_attribute);
+ pmc_attrs = NULL;
+ break;
+ default:
+ attrs = NULL;
+ nattrs = 0;
+ pmc_attrs = NULL;
+ }
- sysdev_create_file(s, &attr_mmcr0);
- sysdev_create_file(s, &attr_mmcr1);
+ for (i = 0; i < nattrs; i++)
+ sysdev_create_file(s, &attrs[i]);
+
+ if (pmc_attrs)
+ for (i = 0; i < cur_cpu_spec->num_pmcs; i++)
+ sysdev_create_file(s, &pmc_attrs[i]);
if (cpu_has_feature(CPU_FTR_MMCRA))
sysdev_create_file(s, &attr_mmcra);
- if (cur_cpu_spec->num_pmcs >= 1)
- sysdev_create_file(s, &attr_pmc1);
- if (cur_cpu_spec->num_pmcs >= 2)
- sysdev_create_file(s, &attr_pmc2);
- if (cur_cpu_spec->num_pmcs >= 3)
- sysdev_create_file(s, &attr_pmc3);
- if (cur_cpu_spec->num_pmcs >= 4)
- sysdev_create_file(s, &attr_pmc4);
- if (cur_cpu_spec->num_pmcs >= 5)
- sysdev_create_file(s, &attr_pmc5);
- if (cur_cpu_spec->num_pmcs >= 6)
- sysdev_create_file(s, &attr_pmc6);
- if (cur_cpu_spec->num_pmcs >= 7)
- sysdev_create_file(s, &attr_pmc7);
- if (cur_cpu_spec->num_pmcs >= 8)
- sysdev_create_file(s, &attr_pmc8);
-
if (cpu_has_feature(CPU_FTR_PURR))
sysdev_create_file(s, &attr_purr);
@@ -248,6 +285,8 @@ static void unregister_cpu_online(unsign
{
struct cpu *c = &per_cpu(cpu_devices, cpu);
struct sys_device *s = &c->sysdev;
+ struct sysdev_attribute *attrs, *pmc_attrs;
+ int i, nattrs;
BUG_ON(!c->hotpluggable);
@@ -256,30 +295,34 @@ static void unregister_cpu_online(unsign
sysdev_remove_file(s, &attr_smt_snooze_delay);
/* PMC stuff */
+ switch (cur_cpu_spec->pmc_type) {
+ case PPC_PMC_IBM:
+ attrs = ibm_common_attrs;
+ nattrs = sizeof(ibm_common_attrs) / sizeof(struct sysdev_attribute);
+ pmc_attrs = ibm_pmc_attrs;
+ break;
+ case PPC_PMC_PA6T:
+ /* PA Semi starts counting at PMC0 */
+ attrs = pa6t_attrs;
+ nattrs = sizeof(pa6t_attrs) / sizeof(struct sysdev_attribute);
+ pmc_attrs = NULL;
+ break;
+ default:
+ attrs = NULL;
+ nattrs = 0;
+ pmc_attrs = NULL;
+ }
- sysdev_remove_file(s, &attr_mmcr0);
- sysdev_remove_file(s, &attr_mmcr1);
+ for (i = 0; i < nattrs; i++)
+ sysdev_remove_file(s, &attrs[i]);
+
+ if (pmc_attrs)
+ for (i = 0; i < cur_cpu_spec->num_pmcs; i++)
+ sysdev_remove_file(s, &pmc_attrs[i]);
if (cpu_has_feature(CPU_FTR_MMCRA))
sysdev_remove_file(s, &attr_mmcra);
- if (cur_cpu_spec->num_pmcs >= 1)
- sysdev_remove_file(s, &attr_pmc1);
- if (cur_cpu_spec->num_pmcs >= 2)
- sysdev_remove_file(s, &attr_pmc2);
- if (cur_cpu_spec->num_pmcs >= 3)
- sysdev_remove_file(s, &attr_pmc3);
- if (cur_cpu_spec->num_pmcs >= 4)
- sysdev_remove_file(s, &attr_pmc4);
- if (cur_cpu_spec->num_pmcs >= 5)
- sysdev_remove_file(s, &attr_pmc5);
- if (cur_cpu_spec->num_pmcs >= 6)
- sysdev_remove_file(s, &attr_pmc6);
- if (cur_cpu_spec->num_pmcs >= 7)
- sysdev_remove_file(s, &attr_pmc7);
- if (cur_cpu_spec->num_pmcs >= 8)
- sysdev_remove_file(s, &attr_pmc8);
-
if (cpu_has_feature(CPU_FTR_PURR))
sysdev_remove_file(s, &attr_purr);
Index: merge/include/asm-powerpc/reg.h
===================================================================
--- merge.orig/include/asm-powerpc/reg.h
+++ merge/include/asm-powerpc/reg.h
@@ -462,6 +462,13 @@
#define SPRN_SIAR 780
#define SPRN_SDAR 781
+#define PA6T_SPRN_PMC0 787
+#define PA6T_SPRN_PMC1 788
+#define PA6T_SPRN_PMC2 789
+#define PA6T_SPRN_PMC3 790
+#define PA6T_SPRN_PMC4 791
+#define PA6T_SPRN_PMC5 792
+
#else /* 32-bit */
#define SPRN_MMCR0 952 /* Monitor Mode Control Register 0 */
#define MMCR0_FC 0x80000000UL /* freeze counters */
Index: merge/arch/powerpc/kernel/pmc.c
===================================================================
--- merge.orig/arch/powerpc/kernel/pmc.c
+++ merge/arch/powerpc/kernel/pmc.c
@@ -17,6 +17,7 @@
#include <linux/module.h>
#include <asm/processor.h>
+#include <asm/cputable.h>
#include <asm/pmc.h>
#ifndef MMCR0_PMA0
@@ -28,7 +29,8 @@ static void dummy_perf(struct pt_regs *r
#if defined(CONFIG_FSL_BOOKE) && !defined(CONFIG_E200)
mtpmr(PMRN_PMGC0, mfpmr(PMRN_PMGC0) & ~PMGC0_PMIE);
#elif defined(CONFIG_PPC64) || defined(CONFIG_6xx)
- mtspr(SPRN_MMCR0, mfspr(SPRN_MMCR0) & ~(MMCR0_PMXE|MMCR0_PMA0));
+ if (cur_cpu_spec->pmc_type == PPC_PMC_IBM)
+ mtspr(SPRN_MMCR0, mfspr(SPRN_MMCR0) & ~(MMCR0_PMXE|MMCR0_PMA0));
#else
mtspr(SPRN_MMCR0, mfspr(SPRN_MMCR0) & ~MMCR0_PMXE);
#endif
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