Messages in this thread Patch in this message | | | From | Zhang Rui <> | Subject | [PATCH 13/15] powercap/intel_rapl: Introduce RAPL I/F type | Date | Thu, 16 Mar 2023 23:38:39 +0800 |
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Different RAPL Interfaces may have different primitive information and rapl_defaults calls.
To better distinguish this difference in the RAPL framework code, introduce a new enum to represent different types of RAPL Interfaces.
No functional change.
Signed-off-by: Zhang Rui <rui.zhang@intel.com> --- drivers/powercap/intel_rapl_common.c | 18 +++++++++++++----- drivers/powercap/intel_rapl_msr.c | 2 ++ .../int340x_thermal/processor_thermal_rapl.c | 1 + include/linux/intel_rapl.h | 6 ++++++ 4 files changed, 22 insertions(+), 5 deletions(-)
diff --git a/drivers/powercap/intel_rapl_common.c b/drivers/powercap/intel_rapl_common.c index a6a7d048d0b4..7e79066bcbcb 100644 --- a/drivers/powercap/intel_rapl_common.c +++ b/drivers/powercap/intel_rapl_common.c @@ -177,7 +177,7 @@ struct rapl_defaults { unsigned int psys_domain_energy_unit; bool spr_psys_bits; }; -static struct rapl_defaults *rapl_defaults; +static struct rapl_defaults *rpd_msr; static struct rapl_defaults *get_rpd(struct rapl_package *rp) { @@ -601,7 +601,7 @@ static u64 rapl_unit_xlate(struct rapl_domain *rd, enum unit_type type, return div64_u64(value, scale); } -static struct rapl_primitive_info rpis_default[NR_RAPL_PRIMITIVES] = { +static struct rapl_primitive_info rpi_msr[NR_RAPL_PRIMITIVES] = { /* name, mask, shift, msr index, unit divisor */ [POWER_LIMIT1] = PRIMITIVE_INFO_INIT(POWER_LIMIT1, POWER_LIMIT1_MASK, 0, RAPL_DOMAIN_REG_LIMIT, POWER_UNIT, 0), @@ -670,8 +670,16 @@ static struct rapl_primitive_info *get_rpi(struct rapl_package *rp, int prim) static int rapl_config(struct rapl_package *rp) { - rp->priv->rpd = (void *)rapl_defaults; - rp->priv->rpi = (void *)rpis_default; + switch (rp->priv->type) { + /* MMIO I/F shares the same register layout as MSR registers */ + case RAPL_IF_MMIO: + case RAPL_IF_MSR: + rp->priv->rpd = (void *)rpd_msr; + rp->priv->rpi = (void *)rpi_msr; + break; + default: + return -EINVAL; + } return 0; } @@ -1536,7 +1544,7 @@ static int __init rapl_init(void) id = x86_match_cpu(rapl_ids); if (id) { - rapl_defaults = (struct rapl_defaults *)id->driver_data; + rpd_msr = (struct rapl_defaults *)id->driver_data; rapl_msr_platdev = platform_device_alloc("intel_rapl_msr", 0); if (!rapl_msr_platdev) diff --git a/drivers/powercap/intel_rapl_msr.c b/drivers/powercap/intel_rapl_msr.c index 3e48e729050d..73c8bbcfc1bd 100644 --- a/drivers/powercap/intel_rapl_msr.c +++ b/drivers/powercap/intel_rapl_msr.c @@ -34,6 +34,7 @@ static struct rapl_if_priv *rapl_msr_priv; 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 }, @@ -50,6 +51,7 @@ static struct rapl_if_priv rapl_msr_priv_intel = { }; 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 }, diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_rapl.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_rapl.c index 140fb85cfa7b..013f1633f082 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_rapl.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_rapl.c @@ -97,6 +97,7 @@ int proc_thermal_rapl_add(struct pci_dev *pdev, struct proc_thermal_device *proc 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.read_raw = rapl_mmio_read_raw; diff --git a/include/linux/intel_rapl.h b/include/linux/intel_rapl.h index d92ded956140..e5a7b47ceac9 100644 --- a/include/linux/intel_rapl.h +++ b/include/linux/intel_rapl.h @@ -14,6 +14,11 @@ #include <linux/powercap.h> #include <linux/cpuhotplug.h> +enum rapl_if_type { + RAPL_IF_MSR, /* RAPL I/F using MSR registers */ + RAPL_IF_MMIO, /* RAPL I/F using MMIO registers */ +}; + enum rapl_domain_type { RAPL_DOMAIN_PACKAGE, /* entire package/socket */ RAPL_DOMAIN_PP0, /* core power plane */ @@ -130,6 +135,7 @@ struct reg_action { * @rpi: internal pointer to interface primitive info */ struct rapl_if_priv { + enum rapl_if_type type; struct powercap_control_type *control_type; enum cpuhp_state pcap_rapl_online; u64 reg_unit; -- 2.25.1
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