From e34b0345e6a531f980a6560fdc3b651de9cfcc67 Mon Sep 17 00:00:00 2001 From: Michel Thierry Date: Thu, 5 Apr 2018 17:00:48 +0300 Subject: [PATCH] drm/i915/icl: Add reset control register changes The bits used to reset the different engines/domains have changed in GEN11, this patch maps the reset engine mask bits with the new bits in the reset control register. v2: Use shift-left instead of BIT macro to match the file style (Paulo). v3: Reuse gen8_reset_engines (Daniele). v4: Do not call intel_uncore_forcewake_reset after reset, we may be using the forcewake to read protected registers elsewhere and those results may be clobbered by the concurrent dropping of forcewake. bspec: 19212 Cc: Oscar Mateo Cc: Antonio Argenziano Cc: Paulo Zanoni Cc: Daniele Ceraolo Spurio Acked-by: Daniele Ceraolo Spurio Signed-off-by: Michel Thierry Reviewed-by: Oscar Mateo Signed-off-by: Mika Kuoppala Link: https://patchwork.freedesktop.org/patch/msgid/20180405140052.10682-1-mika.kuoppala@linux.intel.com --- drivers/gpu/drm/i915/i915_reg.h | 11 ++++++ drivers/gpu/drm/i915/intel_uncore.c | 53 +++++++++++++++++++++++++++-- 2 files changed, 62 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 176dca6554f4..b2a2d8fbbc68 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -301,6 +301,17 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg) #define GEN6_GRDOM_VECS (1 << 4) #define GEN9_GRDOM_GUC (1 << 5) #define GEN8_GRDOM_MEDIA2 (1 << 7) +/* GEN11 changed all bit defs except for FULL & RENDER */ +#define GEN11_GRDOM_FULL GEN6_GRDOM_FULL +#define GEN11_GRDOM_RENDER GEN6_GRDOM_RENDER +#define GEN11_GRDOM_BLT (1 << 2) +#define GEN11_GRDOM_GUC (1 << 3) +#define GEN11_GRDOM_MEDIA (1 << 5) +#define GEN11_GRDOM_MEDIA2 (1 << 6) +#define GEN11_GRDOM_MEDIA3 (1 << 7) +#define GEN11_GRDOM_MEDIA4 (1 << 8) +#define GEN11_GRDOM_VECS (1 << 13) +#define GEN11_GRDOM_VECS2 (1 << 14) #define RING_PP_DIR_BASE(engine) _MMIO((engine)->mmio_base+0x228) #define RING_PP_DIR_BASE_READ(engine) _MMIO((engine)->mmio_base+0x518) diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index e7540bb9786c..d6e20f0f4c28 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -1909,6 +1909,50 @@ static int gen6_reset_engines(struct drm_i915_private *dev_priv, return gen6_hw_domain_reset(dev_priv, hw_mask); } +/** + * gen11_reset_engines - reset individual engines + * @dev_priv: i915 device + * @engine_mask: mask of intel_ring_flag() engines or ALL_ENGINES for full reset + * + * This function will reset the individual engines that are set in engine_mask. + * If you provide ALL_ENGINES as mask, full global domain reset will be issued. + * + * Note: It is responsibility of the caller to handle the difference between + * asking full domain reset versus reset for all available individual engines. + * + * Returns 0 on success, nonzero on error. + */ +static int gen11_reset_engines(struct drm_i915_private *dev_priv, + unsigned engine_mask) +{ + struct intel_engine_cs *engine; + const u32 hw_engine_mask[I915_NUM_ENGINES] = { + [RCS] = GEN11_GRDOM_RENDER, + [BCS] = GEN11_GRDOM_BLT, + [VCS] = GEN11_GRDOM_MEDIA, + [VCS2] = GEN11_GRDOM_MEDIA2, + [VCS3] = GEN11_GRDOM_MEDIA3, + [VCS4] = GEN11_GRDOM_MEDIA4, + [VECS] = GEN11_GRDOM_VECS, + [VECS2] = GEN11_GRDOM_VECS2, + }; + u32 hw_mask; + + BUILD_BUG_ON(VECS2 + 1 != I915_NUM_ENGINES); + + if (engine_mask == ALL_ENGINES) { + hw_mask = GEN11_GRDOM_FULL; + } else { + unsigned int tmp; + + hw_mask = 0; + for_each_engine_masked(engine, dev_priv, engine_mask, tmp) + hw_mask |= hw_engine_mask[engine->id]; + } + + return gen6_hw_domain_reset(dev_priv, hw_mask); +} + /** * __intel_wait_for_register_fw - wait until register matches expected state * @dev_priv: the i915 device @@ -2057,7 +2101,10 @@ static int gen8_reset_engines(struct drm_i915_private *dev_priv, if (gen8_reset_engine_start(engine)) goto not_ready; - return gen6_reset_engines(dev_priv, engine_mask); + if (INTEL_GEN(dev_priv) >= 11) + return gen11_reset_engines(dev_priv, engine_mask); + else + return gen6_reset_engines(dev_priv, engine_mask); not_ready: for_each_engine_masked(engine, dev_priv, engine_mask, tmp) @@ -2160,12 +2207,14 @@ bool intel_has_reset_engine(struct drm_i915_private *dev_priv) int intel_reset_guc(struct drm_i915_private *dev_priv) { + u32 guc_domain = INTEL_GEN(dev_priv) >= 11 ? GEN11_GRDOM_GUC : + GEN9_GRDOM_GUC; int ret; GEM_BUG_ON(!HAS_GUC(dev_priv)); intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); - ret = gen6_hw_domain_reset(dev_priv, GEN9_GRDOM_GUC); + ret = gen6_hw_domain_reset(dev_priv, guc_domain); intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); return ret; -- GitLab