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f9cda04867
Functions supporting GuC logging capabilities were spread across many files, with unnecessary exposures and mixed with unrelated code. Dedicate file will make maintenance of all GuC functions easier as more functions are coming to support GuC submissions. Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170113174157.104492-1-michal.wajdeczko@intel.com
117 lines
3.6 KiB
C
117 lines
3.6 KiB
C
/*
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* Copyright © 2016 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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*/
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#include "i915_drv.h"
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#include "intel_uc.h"
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void intel_uc_init_early(struct drm_i915_private *dev_priv)
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{
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mutex_init(&dev_priv->guc.send_mutex);
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}
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/*
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* Read GuC command/status register (SOFT_SCRATCH_0)
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* Return true if it contains a response rather than a command
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*/
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static bool intel_guc_recv(struct intel_guc *guc, u32 *status)
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{
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struct drm_i915_private *dev_priv = guc_to_i915(guc);
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u32 val = I915_READ(SOFT_SCRATCH(0));
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*status = val;
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return INTEL_GUC_RECV_IS_RESPONSE(val);
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}
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int intel_guc_send(struct intel_guc *guc, const u32 *action, u32 len)
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{
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struct drm_i915_private *dev_priv = guc_to_i915(guc);
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u32 status;
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int i;
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int ret;
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if (WARN_ON(len < 1 || len > 15))
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return -EINVAL;
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mutex_lock(&guc->send_mutex);
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intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
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dev_priv->guc.action_count += 1;
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dev_priv->guc.action_cmd = action[0];
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for (i = 0; i < len; i++)
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I915_WRITE(SOFT_SCRATCH(i), action[i]);
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POSTING_READ(SOFT_SCRATCH(i - 1));
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I915_WRITE(GUC_SEND_INTERRUPT, GUC_SEND_TRIGGER);
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/*
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* Fast commands should complete in less than 10us, so sample quickly
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* up to that length of time, then switch to a slower sleep-wait loop.
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* No inte_guc_send command should ever take longer than 10ms.
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*/
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ret = wait_for_us(intel_guc_recv(guc, &status), 10);
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if (ret)
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ret = wait_for(intel_guc_recv(guc, &status), 10);
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if (status != INTEL_GUC_STATUS_SUCCESS) {
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/*
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* Either the GuC explicitly returned an error (which
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* we convert to -EIO here) or no response at all was
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* received within the timeout limit (-ETIMEDOUT)
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*/
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if (ret != -ETIMEDOUT)
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ret = -EIO;
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DRM_WARN("INTEL_GUC_SEND: Action 0x%X failed;"
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" ret=%d status=0x%08X response=0x%08X\n",
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action[0], ret, status, I915_READ(SOFT_SCRATCH(15)));
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dev_priv->guc.action_fail += 1;
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dev_priv->guc.action_err = ret;
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}
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dev_priv->guc.action_status = status;
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intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
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mutex_unlock(&guc->send_mutex);
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return ret;
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}
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int intel_guc_sample_forcewake(struct intel_guc *guc)
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{
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struct drm_i915_private *dev_priv = guc_to_i915(guc);
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u32 action[2];
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action[0] = INTEL_GUC_ACTION_SAMPLE_FORCEWAKE;
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/* WaRsDisableCoarsePowerGating:skl,bxt */
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if (!intel_enable_rc6() || NEEDS_WaRsDisableCoarsePowerGating(dev_priv))
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action[1] = 0;
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else
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/* bit 0 and 1 are for Render and Media domain separately */
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action[1] = GUC_FORCEWAKE_RENDER | GUC_FORCEWAKE_MEDIA;
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return intel_guc_send(guc, action, ARRAY_SIZE(action));
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}
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