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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-04-05 23:24:19 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-04-06 00:03:24 +0300 |
| commit | 95007efbe608fe888469b5c22d01c54c4d2b3bf1 (patch) | |
| tree | 4189c78ee1682fcc2e094717b24c415db4465ca3 /drivers/gpu/drm/i915/intel_uncore.h | |
| parent | fdc4e9267f9b7bcfafb9d95940a8765c538fb507 (diff) | |
| download | linux-95007efbe608fe888469b5c22d01c54c4d2b3bf1.tar.xz | |
drm/i915: Convert i915_reset.c over to using uncore mmio
Currently i915_reset.c mixes calls to intel_uncore, pci and our old
style I915_READ mmio interfaces. Cast aside the old implicit macros,
and harmonise on using uncore throughout.
add/remove: 1/1 grow/shrink: 0/4 up/down: 65/-207 (-142)
Function old new delta
rmw_register - 65 +65
gen8_reset_engines 945 942 -3
g4x_do_reset 407 376 -31
intel_gpu_reset 545 509 -36
clear_register 63 - -63
i915_clear_error_registers 461 387 -74
A little bit of pointer dancing elimination works wonders.
v2: Roll up the helpers into intel_uncore for general use
With the helpers gcc was a little more eager to inline:
add/remove: 0/1 grow/shrink: 1/3 up/down: 99/-133 (-34)
Function old new delta
i915_clear_error_registers 461 560 +99
gen8_reset_engines 945 942 -3
g4x_do_reset 407 376 -31
intel_gpu_reset 545 509 -36
clear_register 63 - -63
Total: Before=1544400, After=1544366, chg -0.00%
Win some, lose some, gcc is gcc.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190405202419.3093-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/intel_uncore.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_uncore.h | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/intel_uncore.h b/drivers/gpu/drm/i915/intel_uncore.h index a64d3dc0db4d..d6af3de70121 100644 --- a/drivers/gpu/drm/i915/intel_uncore.h +++ b/drivers/gpu/drm/i915/intel_uncore.h @@ -369,11 +369,26 @@ intel_uncore_read64_2x32(struct intel_uncore *uncore, #define intel_uncore_write64_fw(...) __raw_uncore_write64(__VA_ARGS__) #define intel_uncore_posting_read_fw(...) ((void)intel_uncore_read_fw(__VA_ARGS__)) -static inline void intel_uncore_rmw_or_fw(struct intel_uncore *uncore, - i915_reg_t reg, u32 or_val) +static inline void intel_uncore_rmw(struct intel_uncore *uncore, + i915_reg_t reg, u32 clear, u32 set) { - intel_uncore_write_fw(uncore, reg, - intel_uncore_read_fw(uncore, reg) | or_val); + u32 val; + + val = intel_uncore_read(uncore, reg); + val &= ~clear; + val |= set; + intel_uncore_write(uncore, reg, val); +} + +static inline void intel_uncore_rmw_fw(struct intel_uncore *uncore, + i915_reg_t reg, u32 clear, u32 set) +{ + u32 val; + + val = intel_uncore_read_fw(uncore, reg); + val &= ~clear; + val |= set; + intel_uncore_write_fw(uncore, reg, val); } #define raw_reg_read(base, reg) \ |