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intel_rapl: support two power limits for every RAPL domain

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RAPL MSR interface supports 2 power limits for package domain, and 1 power
limit for other domains, while RAPL MMIO interface supports 2 power limits
for both package and dram domains.
And when 2 power limits are supported, the FW_LOCK bit is in bit 63 of the
register, instead of bit 31.

Remove the assumption that only pakcage domain supports 2 power limits.
And allow the RAPL interface driver to specify the number of power limits
supported, for every single RAPL domain it owns..

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>
This commit is contained in:
Zhang Rui
2019-07-10 21:44:32 +08:00
committed by Rafael J. Wysocki
parent d978e755aa
commit 0c2ddedd8b
3 changed files with 27 additions and 46 deletions
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2
include/linux/intel_rapl.h
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@@ -104,6 +104,7 @@ struct reg_action {
* @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.
* @limits: Number of power limits supported by each domain.
* @read_raw: Callback for reading RAPL interface specific
* registers.
* @write_raw: Callback for writing RAPL interface specific
@@ -115,6 +116,7 @@ struct rapl_if_priv {
enum cpuhp_state pcap_rapl_online;
u64 reg_unit;
u64 regs[RAPL_DOMAIN_MAX][RAPL_DOMAIN_REG_MAX];
int limits[RAPL_DOMAIN_MAX];
int (*read_raw)(int cpu, struct reg_action *ra);
int (*write_raw)(int cpu, struct reg_action *ra);
};