Merge tag 'pm-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"Fix a sparse warning triggered by the TPMI interface recently added to
the Intel RAPL power capping driver (Zhang Rui)"
* tag 'pm-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
powercap: intel_rapl: Fix a sparse warning in TPMI interface
diff --git a/drivers/powercap/intel_rapl_common.c b/drivers/powercap/intel_rapl_common.c
index 4e646e5..8fac57b 100644
--- a/drivers/powercap/intel_rapl_common.c
+++ b/drivers/powercap/intel_rapl_common.c
@@ -818,7 +818,7 @@
return -EINVAL;
ra.reg = rd->regs[rpi->id];
- if (!ra.reg)
+ if (!ra.reg.val)
return -EINVAL;
/* non-hardware data are collected by the polling thread */
@@ -830,7 +830,7 @@
ra.mask = rpi->mask;
if (rd->rp->priv->read_raw(get_rid(rd->rp), &ra)) {
- pr_debug("failed to read reg 0x%llx for %s:%s\n", ra.reg, rd->rp->name, rd->name);
+ pr_debug("failed to read reg 0x%llx for %s:%s\n", ra.reg.val, rd->rp->name, rd->name);
return -EIO;
}
@@ -920,7 +920,7 @@
ra.mask = ~0;
if (rd->rp->priv->read_raw(get_rid(rd->rp), &ra)) {
pr_err("Failed to read power unit REG 0x%llx on %s:%s, exit.\n",
- ra.reg, rd->rp->name, rd->name);
+ ra.reg.val, rd->rp->name, rd->name);
return -ENODEV;
}
@@ -948,7 +948,7 @@
ra.mask = ~0;
if (rd->rp->priv->read_raw(get_rid(rd->rp), &ra)) {
pr_err("Failed to read power unit REG 0x%llx on %s:%s, exit.\n",
- ra.reg, rd->rp->name, rd->name);
+ ra.reg.val, rd->rp->name, rd->name);
return -ENODEV;
}
@@ -1135,7 +1135,7 @@
ra.mask = ~0;
if (rd->rp->priv->read_raw(get_rid(rd->rp), &ra)) {
pr_err("Failed to read power unit REG 0x%llx on %s:%s, exit.\n",
- ra.reg, rd->rp->name, rd->name);
+ ra.reg.val, rd->rp->name, rd->name);
return -ENODEV;
}
@@ -1411,8 +1411,8 @@
struct rapl_defaults *defaults = get_defaults(rd->rp);
int ret;
- if (!rd->regs[RAPL_DOMAIN_REG_UNIT]) {
- if (!rd->rp->priv->reg_unit) {
+ if (!rd->regs[RAPL_DOMAIN_REG_UNIT].val) {
+ if (!rd->rp->priv->reg_unit.val) {
pr_err("No valid Unit register found\n");
return -ENODEV;
}
diff --git a/drivers/powercap/intel_rapl_msr.c b/drivers/powercap/intel_rapl_msr.c
index 569e25e..dd47102 100644
--- a/drivers/powercap/intel_rapl_msr.c
+++ b/drivers/powercap/intel_rapl_msr.c
@@ -34,28 +34,32 @@
static struct rapl_if_priv rapl_msr_priv_intel = {
.type = RAPL_IF_MSR,
- .reg_unit = MSR_RAPL_POWER_UNIT,
- .regs[RAPL_DOMAIN_PACKAGE] = {
- MSR_PKG_POWER_LIMIT, MSR_PKG_ENERGY_STATUS, MSR_PKG_PERF_STATUS, 0, MSR_PKG_POWER_INFO },
- .regs[RAPL_DOMAIN_PP0] = {
- MSR_PP0_POWER_LIMIT, MSR_PP0_ENERGY_STATUS, 0, MSR_PP0_POLICY, 0 },
- .regs[RAPL_DOMAIN_PP1] = {
- MSR_PP1_POWER_LIMIT, MSR_PP1_ENERGY_STATUS, 0, MSR_PP1_POLICY, 0 },
- .regs[RAPL_DOMAIN_DRAM] = {
- MSR_DRAM_POWER_LIMIT, MSR_DRAM_ENERGY_STATUS, MSR_DRAM_PERF_STATUS, 0, MSR_DRAM_POWER_INFO },
- .regs[RAPL_DOMAIN_PLATFORM] = {
- MSR_PLATFORM_POWER_LIMIT, MSR_PLATFORM_ENERGY_STATUS, 0, 0, 0},
+ .reg_unit.msr = MSR_RAPL_POWER_UNIT,
+ .regs[RAPL_DOMAIN_PACKAGE][RAPL_DOMAIN_REG_LIMIT].msr = MSR_PKG_POWER_LIMIT,
+ .regs[RAPL_DOMAIN_PACKAGE][RAPL_DOMAIN_REG_STATUS].msr = MSR_PKG_ENERGY_STATUS,
+ .regs[RAPL_DOMAIN_PACKAGE][RAPL_DOMAIN_REG_PERF].msr = MSR_PKG_PERF_STATUS,
+ .regs[RAPL_DOMAIN_PACKAGE][RAPL_DOMAIN_REG_INFO].msr = MSR_PKG_POWER_INFO,
+ .regs[RAPL_DOMAIN_PP0][RAPL_DOMAIN_REG_LIMIT].msr = MSR_PP0_POWER_LIMIT,
+ .regs[RAPL_DOMAIN_PP0][RAPL_DOMAIN_REG_STATUS].msr = MSR_PP0_ENERGY_STATUS,
+ .regs[RAPL_DOMAIN_PP0][RAPL_DOMAIN_REG_POLICY].msr = MSR_PP0_POLICY,
+ .regs[RAPL_DOMAIN_PP1][RAPL_DOMAIN_REG_LIMIT].msr = MSR_PP1_POWER_LIMIT,
+ .regs[RAPL_DOMAIN_PP1][RAPL_DOMAIN_REG_STATUS].msr = MSR_PP1_ENERGY_STATUS,
+ .regs[RAPL_DOMAIN_PP1][RAPL_DOMAIN_REG_POLICY].msr = MSR_PP1_POLICY,
+ .regs[RAPL_DOMAIN_DRAM][RAPL_DOMAIN_REG_LIMIT].msr = MSR_DRAM_POWER_LIMIT,
+ .regs[RAPL_DOMAIN_DRAM][RAPL_DOMAIN_REG_STATUS].msr = MSR_DRAM_ENERGY_STATUS,
+ .regs[RAPL_DOMAIN_DRAM][RAPL_DOMAIN_REG_PERF].msr = MSR_DRAM_PERF_STATUS,
+ .regs[RAPL_DOMAIN_DRAM][RAPL_DOMAIN_REG_INFO].msr = MSR_DRAM_POWER_INFO,
+ .regs[RAPL_DOMAIN_PLATFORM][RAPL_DOMAIN_REG_LIMIT].msr = MSR_PLATFORM_POWER_LIMIT,
+ .regs[RAPL_DOMAIN_PLATFORM][RAPL_DOMAIN_REG_STATUS].msr = MSR_PLATFORM_ENERGY_STATUS,
.limits[RAPL_DOMAIN_PACKAGE] = BIT(POWER_LIMIT2),
.limits[RAPL_DOMAIN_PLATFORM] = BIT(POWER_LIMIT2),
};
static struct rapl_if_priv rapl_msr_priv_amd = {
.type = RAPL_IF_MSR,
- .reg_unit = MSR_AMD_RAPL_POWER_UNIT,
- .regs[RAPL_DOMAIN_PACKAGE] = {
- 0, MSR_AMD_PKG_ENERGY_STATUS, 0, 0, 0 },
- .regs[RAPL_DOMAIN_PP0] = {
- 0, MSR_AMD_CORE_ENERGY_STATUS, 0, 0, 0 },
+ .reg_unit.msr = MSR_AMD_RAPL_POWER_UNIT,
+ .regs[RAPL_DOMAIN_PACKAGE][RAPL_DOMAIN_REG_STATUS].msr = MSR_AMD_PKG_ENERGY_STATUS,
+ .regs[RAPL_DOMAIN_PP0][RAPL_DOMAIN_REG_STATUS].msr = MSR_AMD_CORE_ENERGY_STATUS,
};
/* Handles CPU hotplug on multi-socket systems.
@@ -99,10 +103,8 @@
static int rapl_msr_read_raw(int cpu, struct reg_action *ra)
{
- u32 msr = (u32)ra->reg;
-
- if (rdmsrl_safe_on_cpu(cpu, msr, &ra->value)) {
- pr_debug("failed to read msr 0x%x on cpu %d\n", msr, cpu);
+ if (rdmsrl_safe_on_cpu(cpu, ra->reg.msr, &ra->value)) {
+ pr_debug("failed to read msr 0x%x on cpu %d\n", ra->reg.msr, cpu);
return -EIO;
}
ra->value &= ra->mask;
@@ -112,17 +114,16 @@
static void rapl_msr_update_func(void *info)
{
struct reg_action *ra = info;
- u32 msr = (u32)ra->reg;
u64 val;
- ra->err = rdmsrl_safe(msr, &val);
+ ra->err = rdmsrl_safe(ra->reg.msr, &val);
if (ra->err)
return;
val &= ~ra->mask;
val |= ra->value;
- ra->err = wrmsrl_safe(msr, val);
+ ra->err = wrmsrl_safe(ra->reg.msr, val);
}
static int rapl_msr_write_raw(int cpu, struct reg_action *ra)
@@ -171,7 +172,7 @@
if (id) {
rapl_msr_priv->limits[RAPL_DOMAIN_PACKAGE] |= BIT(POWER_LIMIT4);
- rapl_msr_priv->regs[RAPL_DOMAIN_PACKAGE][RAPL_DOMAIN_REG_PL4] =
+ rapl_msr_priv->regs[RAPL_DOMAIN_PACKAGE][RAPL_DOMAIN_REG_PL4].msr =
MSR_VR_CURRENT_CONFIG;
pr_info("PL4 support detected.\n");
}
diff --git a/drivers/powercap/intel_rapl_tpmi.c b/drivers/powercap/intel_rapl_tpmi.c
index 4f4f13d..891c90f 100644
--- a/drivers/powercap/intel_rapl_tpmi.c
+++ b/drivers/powercap/intel_rapl_tpmi.c
@@ -59,10 +59,10 @@
static int tpmi_rapl_read_raw(int id, struct reg_action *ra)
{
- if (!ra->reg)
+ if (!ra->reg.mmio)
return -EINVAL;
- ra->value = readq((void __iomem *)ra->reg);
+ ra->value = readq(ra->reg.mmio);
ra->value &= ra->mask;
return 0;
@@ -72,15 +72,15 @@
{
u64 val;
- if (!ra->reg)
+ if (!ra->reg.mmio)
return -EINVAL;
- val = readq((void __iomem *)ra->reg);
+ val = readq(ra->reg.mmio);
val &= ~ra->mask;
val |= ra->value;
- writeq(val, (void __iomem *)ra->reg);
+ writeq(val, ra->reg.mmio);
return 0;
}
@@ -138,8 +138,7 @@
enum tpmi_rapl_register reg_index;
enum rapl_domain_reg_id reg_id;
int tpmi_domain_size, tpmi_domain_flags;
- u64 *tpmi_rapl_regs = trp->base + offset;
- u64 tpmi_domain_header = readq((void __iomem *)tpmi_rapl_regs);
+ u64 tpmi_domain_header = readq(trp->base + offset);
/* Domain Parent bits are ignored for now */
tpmi_domain_version = tpmi_domain_header & 0xff;
@@ -180,7 +179,7 @@
return -EINVAL;
}
- if (trp->priv.regs[domain_type][RAPL_DOMAIN_REG_UNIT]) {
+ if (trp->priv.regs[domain_type][RAPL_DOMAIN_REG_UNIT].mmio) {
pr_warn(FW_BUG "Duplicate Domain type %d\n", tpmi_domain_type);
return -EINVAL;
}
@@ -218,7 +217,7 @@
default:
continue;
}
- trp->priv.regs[domain_type][reg_id] = (u64)&tpmi_rapl_regs[reg_index];
+ trp->priv.regs[domain_type][reg_id].mmio = trp->base + offset + reg_index * 8;
}
return 0;
diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_rapl.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_rapl.c
index 013f163..2f00fc3 100644
--- a/drivers/thermal/intel/int340x_thermal/processor_thermal_rapl.c
+++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_rapl.c
@@ -57,10 +57,10 @@
static int rapl_mmio_read_raw(int cpu, struct reg_action *ra)
{
- if (!ra->reg)
+ if (!ra->reg.mmio)
return -EINVAL;
- ra->value = readq((void __iomem *)ra->reg);
+ ra->value = readq(ra->reg.mmio);
ra->value &= ra->mask;
return 0;
}
@@ -69,13 +69,13 @@
{
u64 val;
- if (!ra->reg)
+ if (!ra->reg.mmio)
return -EINVAL;
- val = readq((void __iomem *)ra->reg);
+ val = readq(ra->reg.mmio);
val &= ~ra->mask;
val |= ra->value;
- writeq(val, (void __iomem *)ra->reg);
+ writeq(val, ra->reg.mmio);
return 0;
}
@@ -92,13 +92,13 @@
for (domain = RAPL_DOMAIN_PACKAGE; domain < RAPL_DOMAIN_MAX; domain++) {
for (reg = RAPL_DOMAIN_REG_LIMIT; reg < RAPL_DOMAIN_REG_MAX; reg++)
if (rapl_regs->regs[domain][reg])
- rapl_mmio_priv.regs[domain][reg] =
- (u64)proc_priv->mmio_base +
+ rapl_mmio_priv.regs[domain][reg].mmio =
+ proc_priv->mmio_base +
rapl_regs->regs[domain][reg];
rapl_mmio_priv.limits[domain] = rapl_regs->limits[domain];
}
rapl_mmio_priv.type = RAPL_IF_MMIO;
- rapl_mmio_priv.reg_unit = (u64)proc_priv->mmio_base + rapl_regs->reg_unit;
+ rapl_mmio_priv.reg_unit.mmio = proc_priv->mmio_base + rapl_regs->reg_unit;
rapl_mmio_priv.read_raw = rapl_mmio_read_raw;
rapl_mmio_priv.write_raw = rapl_mmio_write_raw;
diff --git a/include/linux/intel_rapl.h b/include/linux/intel_rapl.h
index e6936cb..33f21bd 100644
--- a/include/linux/intel_rapl.h
+++ b/include/linux/intel_rapl.h
@@ -100,10 +100,16 @@
#define RAPL_DOMAIN_NAME_LENGTH 16
+union rapl_reg {
+ void __iomem *mmio;
+ u32 msr;
+ u64 val;
+};
+
struct rapl_domain {
char name[RAPL_DOMAIN_NAME_LENGTH];
enum rapl_domain_type id;
- u64 regs[RAPL_DOMAIN_REG_MAX];
+ union rapl_reg regs[RAPL_DOMAIN_REG_MAX];
struct powercap_zone power_zone;
struct rapl_domain_data rdd;
struct rapl_power_limit rpl[NR_POWER_LIMITS];
@@ -116,7 +122,7 @@
};
struct reg_action {
- u64 reg;
+ union rapl_reg reg;
u64 mask;
u64 value;
int err;
@@ -143,8 +149,8 @@
enum rapl_if_type type;
struct powercap_control_type *control_type;
enum cpuhp_state pcap_rapl_online;
- u64 reg_unit;
- u64 regs[RAPL_DOMAIN_MAX][RAPL_DOMAIN_REG_MAX];
+ union rapl_reg reg_unit;
+ union rapl_reg regs[RAPL_DOMAIN_MAX][RAPL_DOMAIN_REG_MAX];
int limits[RAPL_DOMAIN_MAX];
int (*read_raw)(int id, struct reg_action *ra);
int (*write_raw)(int id, struct reg_action *ra);
