diff options
| author | Zhang Rui <rui.zhang@intel.com> | 2019-07-10 21:44:27 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-07-11 15:08:57 +0200 |
| commit | beea8df821d928e7755917da6c1e45d6afde5148 (patch) | |
| tree | d3cfe4f73a1c5215e93b34c5f3215c5352cc89ea /include/linux/intel_rapl.h | |
| parent | 7fde2712a7adab721eaabafbd8ff93dff3262d35 (diff) | |
intel_rapl: abstract register access operations
MSR and MMIO RAPL interfaces have different ways to access the registers,
thus in order to abstract the register access operations, two callbacks,
.read_raw()/.write_raw() are introduced, and they should be implemented by
MSR RAPL and MMIO RAPL interface driver respectly.
This patch implements them for the MSR I/F only.
Reviewed-by: Pandruvada, Srinivas <srinivas.pandruvada@intel.com>
Tested-by: Pandruvada, Srinivas <srinivas.pandruvada@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/intel_rapl.h')
| -rw-r--r-- | include/linux/intel_rapl.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/intel_rapl.h b/include/linux/intel_rapl.h index ec2c9e83274f..ff215d64d114 100644 --- a/include/linux/intel_rapl.h +++ b/include/linux/intel_rapl.h @@ -88,6 +88,13 @@ struct rapl_domain { struct rapl_package *rp; }; +struct reg_action { + u32 reg; + u64 mask; + u64 value; + int err; +}; + /** * struct rapl_if_priv: private data for different RAPL interfaces * @control_type: Each RAPL interface must have its own powercap @@ -97,6 +104,10 @@ struct rapl_domain { * @pcap_rapl_online: CPU hotplug state for each RAPL interface. * @reg_unit: Register for getting energy/power/time unit. * @regs: Register sets for different RAPL Domains. + * @read_raw: Callback for reading RAPL interface specific + * registers. + * @write_raw: Callback for writing RAPL interface specific + * registers. */ struct rapl_if_priv { struct powercap_control_type *control_type; @@ -104,6 +115,8 @@ struct rapl_if_priv { enum cpuhp_state pcap_rapl_online; u32 reg_unit; u32 regs[RAPL_DOMAIN_MAX][RAPL_DOMAIN_REG_MAX]; + int (*read_raw)(int cpu, struct reg_action *ra); + int (*write_raw)(int cpu, struct reg_action *ra); }; /* maximum rapl package domain name: package-%d-die-%d */ |