diff options
author | Michal Wajdeczko <michal.wajdeczko@intel.com> | 2017-10-16 14:47:11 +0000 |
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committer | Joonas Lahtinen <joonas.lahtinen@linux.intel.com> | 2017-10-16 18:53:22 +0300 |
commit | 5d53be45a86f2103a30872e2a06cbf6d38233326 (patch) | |
tree | 8a29ca2d4d5e9edd47a770437ec5aafe8ea86529 /drivers/gpu/drm/i915/intel_guc.c | |
parent | 46f1e8b3de827057cdbeb9a78e6994b1f0386474 (diff) |
drm/i915/guc: Move GuC boot param initialization out of xfer
We want to keep ucode xfer functions separate from other
initialization. Once separated, add explicit forcewake.
v2: use BLITTER domain only and add comment (Daniele)
Suggested-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> #1
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171016144724.17244-3-michal.wajdeczko@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_guc.c')
-rw-r--r-- | drivers/gpu/drm/i915/intel_guc.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c index be1c9a7f4ff3..719144ac8fc0 100644 --- a/drivers/gpu/drm/i915/intel_guc.c +++ b/drivers/gpu/drm/i915/intel_guc.c @@ -67,6 +67,98 @@ void intel_guc_init_early(struct intel_guc *guc) guc->notify = gen8_guc_raise_irq; } +static u32 get_gttype(struct drm_i915_private *dev_priv) +{ + /* XXX: GT type based on PCI device ID? field seems unused by fw */ + return 0; +} + +static u32 get_core_family(struct drm_i915_private *dev_priv) +{ + u32 gen = INTEL_GEN(dev_priv); + + switch (gen) { + case 9: + return GUC_CORE_FAMILY_GEN9; + + default: + MISSING_CASE(gen); + return GUC_CORE_FAMILY_UNKNOWN; + } +} + +/* + * Initialise the GuC parameter block before starting the firmware + * transfer. These parameters are read by the firmware on startup + * and cannot be changed thereafter. + */ +void intel_guc_init_params(struct intel_guc *guc) +{ + struct drm_i915_private *dev_priv = guc_to_i915(guc); + u32 params[GUC_CTL_MAX_DWORDS]; + int i; + + memset(¶ms, 0, sizeof(params)); + + params[GUC_CTL_DEVICE_INFO] |= + (get_gttype(dev_priv) << GUC_CTL_GTTYPE_SHIFT) | + (get_core_family(dev_priv) << GUC_CTL_COREFAMILY_SHIFT); + + /* + * GuC ARAT increment is 10 ns. GuC default scheduler quantum is one + * second. This ARAR is calculated by: + * Scheduler-Quantum-in-ns / ARAT-increment-in-ns = 1000000000 / 10 + */ + params[GUC_CTL_ARAT_HIGH] = 0; + params[GUC_CTL_ARAT_LOW] = 100000000; + + params[GUC_CTL_WA] |= GUC_CTL_WA_UK_BY_DRIVER; + + params[GUC_CTL_FEATURE] |= GUC_CTL_DISABLE_SCHEDULER | + GUC_CTL_VCS2_ENABLED; + + params[GUC_CTL_LOG_PARAMS] = guc->log.flags; + + if (i915_modparams.guc_log_level >= 0) { + params[GUC_CTL_DEBUG] = + i915_modparams.guc_log_level << GUC_LOG_VERBOSITY_SHIFT; + } else + params[GUC_CTL_DEBUG] = GUC_LOG_DISABLED; + + /* If GuC submission is enabled, set up additional parameters here */ + if (i915_modparams.enable_guc_submission) { + u32 ads = guc_ggtt_offset(guc->ads_vma) >> PAGE_SHIFT; + u32 pgs = guc_ggtt_offset(dev_priv->guc.stage_desc_pool); + u32 ctx_in_16 = GUC_MAX_STAGE_DESCRIPTORS / 16; + + params[GUC_CTL_DEBUG] |= ads << GUC_ADS_ADDR_SHIFT; + params[GUC_CTL_DEBUG] |= GUC_ADS_ENABLED; + + pgs >>= PAGE_SHIFT; + params[GUC_CTL_CTXINFO] = (pgs << GUC_CTL_BASE_ADDR_SHIFT) | + (ctx_in_16 << GUC_CTL_CTXNUM_IN16_SHIFT); + + params[GUC_CTL_FEATURE] |= GUC_CTL_KERNEL_SUBMISSIONS; + + /* Unmask this bit to enable the GuC's internal scheduler */ + params[GUC_CTL_FEATURE] &= ~GUC_CTL_DISABLE_SCHEDULER; + } + + /* + * All SOFT_SCRATCH registers are in FORCEWAKE_BLITTER domain and + * they are power context saved so it's ok to release forcewake + * when we are done here and take it again at xfer time. + */ + intel_uncore_forcewake_get(dev_priv, FORCEWAKE_BLITTER); + + I915_WRITE(SOFT_SCRATCH(0), 0); + + for (i = 0; i < GUC_CTL_MAX_DWORDS; i++) + I915_WRITE(SOFT_SCRATCH(1 + i), params[i]); + + intel_uncore_forcewake_put(dev_priv, FORCEWAKE_BLITTER); +} + int intel_guc_send_nop(struct intel_guc *guc, const u32 *action, u32 len) { WARN(1, "Unexpected send: action=%#x\n", *action); |