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| author | Lionel Landwerlin | 2018-10-23 12:07:07 +0200 |
|---|---|---|
| committer | Lionel Landwerlin | 2018-10-23 16:09:25 +0200 |
| commit | cd956bfcd0f58d20485ac0a785415f7d9327a95f (patch) | |
| tree | c6f59c052017d7526a414b388d13327b427e412b /drivers/gpu/drm/i915/i915_reg.h | |
| parent | drm/i915/perf: pass stream to vfuncs when possible (diff) | |
| download | kernel-qcow2-linux-cd956bfcd0f58d20485ac0a785415f7d9327a95f.tar.gz kernel-qcow2-linux-cd956bfcd0f58d20485ac0a785415f7d9327a95f.tar.xz kernel-qcow2-linux-cd956bfcd0f58d20485ac0a785415f7d9327a95f.zip | |
drm/i915/perf: add a parameter to control the size of OA buffer
The way our hardware is designed doesn't seem to let us use the
MI_RECORD_PERF_COUNT command without setting up a circular buffer.
In the case where the user didn't request OA reports to be available
through the i915 perf stream, we can set the OA buffer to the minimum
size to avoid consuming memory which won't be used by the driver.
v2: Simplify oa buffer size exponent selection (Chris)
Reuse vma size field (Lionel)
v3: Restrict size opening parameter to values supported by HW (Chris)
v4: Drop out of date comment (Matt)
Add debug message when buffer size is rejected (Matt)
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181023100707.31738-5-lionel.g.landwerlin@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 8bd61f946714..4f9c2fe51f27 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -569,12 +569,14 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg) #define GEN8_OABUFFER_UDW _MMIO(0x23b4) #define GEN8_OABUFFER _MMIO(0x2b14) #define GEN8_OABUFFER_MEM_SELECT_GGTT (1 << 0) /* 0: PPGTT, 1: GGTT */ +#define GEN8_OABUFFER_BUFFER_SIZE_SHIFT 3 #define GEN7_OASTATUS1 _MMIO(0x2364) #define GEN7_OASTATUS1_TAIL_MASK 0xffffffc0 #define GEN7_OASTATUS1_COUNTER_OVERFLOW (1 << 2) #define GEN7_OASTATUS1_OABUFFER_OVERFLOW (1 << 1) #define GEN7_OASTATUS1_REPORT_LOST (1 << 0) +#define GEN7_OASTATUS1_BUFFER_SIZE_SHIFT 3 #define GEN7_OASTATUS2 _MMIO(0x2368) #define GEN7_OASTATUS2_HEAD_MASK 0xffffffc0 |