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| author | Dale B Stimson <dale.b.stimson@intel.com> | 2022-05-19 09:57:32 +0100 |
|---|---|---|
| committer | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2022-05-20 09:11:45 +0100 |
| commit | 5f38c3fb55ce3814b4353320d7a205068a420e48 (patch) | |
| tree | 37ee320756158eddcada60cb4c5a003d21a2faae /drivers | |
| parent | ee421bb4cb9535f44015634baad833dcc98c9062 (diff) | |
| download | linux-stable-5f38c3fb55ce3814b4353320d7a205068a420e48.tar.gz linux-stable-5f38c3fb55ce3814b4353320d7a205068a420e48.tar.bz2 linux-stable-5f38c3fb55ce3814b4353320d7a205068a420e48.zip | |
drm/i915/pcode: Add a couple of pcode helpers
Some dGfx pcode commands take additional sub-commands and parameters. Add a
couple of helpers to help formatting these commands to improve code
readability.
v2: Fixed commit author (Rodrigo)
v3: Function rename and convert to new uncore interface for pcode functions
Remove unnecessary #define's (Andi)
v4: Another function rename
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Signed-off-by: Dale B Stimson <dale.b.stimson@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220519085732.1276255-3-tvrtko.ursulin@linux.intel.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pcode.c | 32 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pcode.h | 6 |
3 files changed, 41 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 9ad593810537..5d2ab9f66294 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -6674,6 +6674,9 @@ #define GEN6_PCODE_MAILBOX _MMIO(0x138124) #define GEN6_PCODE_READY (1 << 31) +#define GEN6_PCODE_MB_PARAM2 REG_GENMASK(23, 16) +#define GEN6_PCODE_MB_PARAM1 REG_GENMASK(15, 8) +#define GEN6_PCODE_MB_COMMAND REG_GENMASK(7, 0) #define GEN6_PCODE_ERROR_MASK 0xFF #define GEN6_PCODE_SUCCESS 0x0 #define GEN6_PCODE_ILLEGAL_CMD 0x1 diff --git a/drivers/gpu/drm/i915/intel_pcode.c b/drivers/gpu/drm/i915/intel_pcode.c index 2be700932322..a234d9b4ed14 100644 --- a/drivers/gpu/drm/i915/intel_pcode.c +++ b/drivers/gpu/drm/i915/intel_pcode.c @@ -214,3 +214,35 @@ int intel_pcode_init(struct intel_uncore *uncore) DG1_UNCORE_INIT_STATUS_COMPLETE, DG1_UNCORE_INIT_STATUS_COMPLETE, 180000); } + +int snb_pcode_read_p(struct intel_uncore *uncore, u32 mbcmd, u32 p1, u32 p2, u32 *val) +{ + intel_wakeref_t wakeref; + u32 mbox; + int err; + + mbox = REG_FIELD_PREP(GEN6_PCODE_MB_COMMAND, mbcmd) + | REG_FIELD_PREP(GEN6_PCODE_MB_PARAM1, p1) + | REG_FIELD_PREP(GEN6_PCODE_MB_PARAM2, p2); + + with_intel_runtime_pm(uncore->rpm, wakeref) + err = snb_pcode_read(uncore, mbox, val, NULL); + + return err; +} + +int snb_pcode_write_p(struct intel_uncore *uncore, u32 mbcmd, u32 p1, u32 p2, u32 val) +{ + intel_wakeref_t wakeref; + u32 mbox; + int err; + + mbox = REG_FIELD_PREP(GEN6_PCODE_MB_COMMAND, mbcmd) + | REG_FIELD_PREP(GEN6_PCODE_MB_PARAM1, p1) + | REG_FIELD_PREP(GEN6_PCODE_MB_PARAM2, p2); + + with_intel_runtime_pm(uncore->rpm, wakeref) + err = snb_pcode_write(uncore, mbox, val); + + return err; +} diff --git a/drivers/gpu/drm/i915/intel_pcode.h b/drivers/gpu/drm/i915/intel_pcode.h index 8f6241b114a5..8d2198e29422 100644 --- a/drivers/gpu/drm/i915/intel_pcode.h +++ b/drivers/gpu/drm/i915/intel_pcode.h @@ -21,4 +21,10 @@ int skl_pcode_request(struct intel_uncore *uncore, u32 mbox, u32 request, int intel_pcode_init(struct intel_uncore *uncore); +/* + * Helpers for dGfx PCODE mailbox command formatting + */ +int snb_pcode_read_p(struct intel_uncore *uncore, u32 mbcmd, u32 p1, u32 p2, u32 *val); +int snb_pcode_write_p(struct intel_uncore *uncore, u32 mbcmd, u32 p1, u32 p2, u32 val); + #endif /* _INTEL_PCODE_H */ |