diff options
| author | Ben Widawsky <benjamin.widawsky@intel.com> | 2013-07-04 11:02:03 -0700 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-07-16 07:57:42 +0200 |
| commit | 0d8ff15e9a15f2b393e53337a107b7a1e5919b6d (patch) | |
| tree | 641bb75068c873958a52cb38b9cb8ed9bacffd0b /drivers/gpu/drm/i915/i915_gem_gtt.c | |
| parent | 50b44a449ff1a19712ebc36ffccf9ac0a68033bf (diff) | |
| download | blackbird-obmc-linux-0d8ff15e9a15f2b393e53337a107b7a1e5919b6d.tar.gz blackbird-obmc-linux-0d8ff15e9a15f2b393e53337a107b7a1e5919b6d.zip | |
drm/i915/hsw: Set correct Haswell PTE encodings.
The cacheability controls have changed, and the bits have been
rearranged in general.
Note that age 0 is the oldest (most likely to get evicted) and age 3
is the youngest (most likely to stick around for a bit). We've picked
0 for no reason, but atm it shouldn't matter anyway (since we don't
yet try to differentiate between different objects).
v2: Remove comments for snb/ivb cache leves, that's a separate change.
v3: Resolve conflicts due to patch series reordering.
v4: Rebased on top of Kenneth Graunke's ->pte_encode refactoring.
v5: Removed eLLC bits for separate patch.
In the internal repository this was:
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
[danvet: Add comment about cache ages as requested by Ben provoked due
to a question from Damien.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_gtt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 242d0f9bb9e4..5534dd5cea58 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -33,6 +33,7 @@ /* PPGTT stuff */ #define GEN6_GTT_ADDR_ENCODE(addr) ((addr) | (((addr) >> 28) & 0xff0)) +#define HSW_GTT_ADDR_ENCODE(addr) ((addr) | (((addr) >> 28) & 0x7f0)) #define GEN6_PDE_VALID (1 << 0) /* gen6+ has bit 11-4 for physical addr bit 39-32 */ @@ -44,6 +45,14 @@ #define GEN6_PTE_CACHE_LLC (2 << 1) #define GEN6_PTE_CACHE_LLC_MLC (3 << 1) #define GEN6_PTE_ADDR_ENCODE(addr) GEN6_GTT_ADDR_ENCODE(addr) +#define HSW_PTE_ADDR_ENCODE(addr) HSW_GTT_ADDR_ENCODE(addr) + +/* Cacheability Control is a 4-bit value. The low three bits are stored in * + * bits 3:1 of the PTE, while the fourth bit is stored in bit 11 of the PTE. + */ +#define HSW_CACHEABILITY_CONTROL(bits) ((((bits) & 0x7) << 1) | \ + (((bits) & 0x8) << (11 - 3))) +#define HSW_WB_LLC_AGE0 HSW_CACHEABILITY_CONTROL(0x3) static gen6_gtt_pte_t gen6_pte_encode(dma_addr_t addr, enum i915_cache_level level) @@ -92,10 +101,10 @@ static gen6_gtt_pte_t hsw_pte_encode(dma_addr_t addr, enum i915_cache_level level) { gen6_gtt_pte_t pte = GEN6_PTE_VALID; - pte |= GEN6_PTE_ADDR_ENCODE(addr); + pte |= HSW_PTE_ADDR_ENCODE(addr); if (level != I915_CACHE_NONE) - pte |= GEN6_PTE_CACHE_LLC; + pte |= HSW_WB_LLC_AGE0; return pte; } |
