* Firmware writes a success/fail code back to the action register after
* processes the request. The kernel driver polls waiting for this update and
* then proceeds.
- * See guc_send()
+ * See intel_guc_send()
*
* Doorbells:
* Doorbells are interrupts to uKernel. A doorbell is a single cache line (QW)
*
*/
-/*
- * Read GuC command/status register (SOFT_SCRATCH_0)
- * Return true if it contains a response rather than a command
- */
-static inline bool guc_recv(struct drm_i915_private *dev_priv, u32 *status)
-{
- u32 val = I915_READ(SOFT_SCRATCH(0));
- *status = val;
- return INTEL_GUC_RECV_IS_RESPONSE(val);
-}
-
-static int guc_send(struct intel_guc *guc, u32 *data, u32 len)
-{
- struct drm_i915_private *dev_priv = guc_to_i915(guc);
- u32 status;
- int i;
- int ret;
-
- if (WARN_ON(len < 1 || len > 15))
- return -EINVAL;
-
- mutex_lock(&guc->send_mutex);
- intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
-
- dev_priv->guc.action_count += 1;
- dev_priv->guc.action_cmd = data[0];
-
- for (i = 0; i < len; i++)
- I915_WRITE(SOFT_SCRATCH(i), data[i]);
-
- POSTING_READ(SOFT_SCRATCH(i - 1));
-
- I915_WRITE(GUC_SEND_INTERRUPT, GUC_SEND_TRIGGER);
-
- /*
- * Fast commands should complete in less than 10us, so sample quickly
- * up to that length of time, then switch to a slower sleep-wait loop.
- * No INTEL_GUC_ACTION command should ever take longer than 10ms.
- */
- ret = wait_for_us(guc_recv(dev_priv, &status), 10);
- if (ret)
- ret = wait_for(guc_recv(dev_priv, &status), 10);
- if (status != INTEL_GUC_STATUS_SUCCESS) {
- /*
- * Either the GuC explicitly returned an error (which
- * we convert to -EIO here) or no response at all was
- * received within the timeout limit (-ETIMEDOUT)
- */
- if (ret != -ETIMEDOUT)
- ret = -EIO;
-
- DRM_WARN("Action 0x%X failed; ret=%d status=0x%08X response=0x%08X\n",
- data[0], ret, status, I915_READ(SOFT_SCRATCH(15)));
-
- dev_priv->guc.action_fail += 1;
- dev_priv->guc.action_err = ret;
- }
- dev_priv->guc.action_status = status;
-
- intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
- mutex_unlock(&guc->send_mutex);
-
- return ret;
-}
-
/*
* Tell the GuC to allocate or deallocate a specific doorbell
*/
static int guc_allocate_doorbell(struct intel_guc *guc,
struct i915_guc_client *client)
{
- u32 data[2];
+ u32 action[] = {
+ INTEL_GUC_ACTION_ALLOCATE_DOORBELL,
+ client->ctx_index
+ };
- data[0] = INTEL_GUC_ACTION_ALLOCATE_DOORBELL;
- data[1] = client->ctx_index;
-
- return guc_send(guc, data, 2);
+ return intel_guc_send(guc, action, ARRAY_SIZE(action));
}
static int guc_release_doorbell(struct intel_guc *guc,
struct i915_guc_client *client)
{
- u32 data[2];
-
- data[0] = INTEL_GUC_ACTION_DEALLOCATE_DOORBELL;
- data[1] = client->ctx_index;
-
- return guc_send(guc, data, 2);
-}
-
-static int guc_sample_forcewake(struct intel_guc *guc,
- struct i915_guc_client *client)
-{
- struct drm_i915_private *dev_priv = guc_to_i915(guc);
- u32 data[2];
-
- data[0] = INTEL_GUC_ACTION_SAMPLE_FORCEWAKE;
- /* WaRsDisableCoarsePowerGating:skl,bxt */
- if (!intel_enable_rc6() || NEEDS_WaRsDisableCoarsePowerGating(dev_priv))
- data[1] = 0;
- else
- /* bit 0 and 1 are for Render and Media domain separately */
- data[1] = GUC_FORCEWAKE_RENDER | GUC_FORCEWAKE_MEDIA;
-
- return guc_send(guc, data, ARRAY_SIZE(data));
-}
-
-static int guc_logbuffer_flush_complete(struct intel_guc *guc)
-{
- u32 data[1];
-
- data[0] = INTEL_GUC_ACTION_LOG_BUFFER_FILE_FLUSH_COMPLETE;
-
- return guc_send(guc, data, 1);
-}
-
-static int guc_force_logbuffer_flush(struct intel_guc *guc)
-{
- u32 data[2];
-
- data[0] = INTEL_GUC_ACTION_FORCE_LOG_BUFFER_FLUSH;
- data[1] = 0;
-
- return guc_send(guc, data, 2);
-}
-
-static int guc_logging_control(struct intel_guc *guc, u32 control_val)
-{
- u32 data[2];
-
- data[0] = INTEL_GUC_ACTION_UK_LOG_ENABLE_LOGGING;
- data[1] = control_val;
+ u32 action[] = {
+ INTEL_GUC_ACTION_DEALLOCATE_DOORBELL,
+ client->ctx_index
+ };
- return guc_send(guc, data, 2);
+ return intel_guc_send(guc, action, ARRAY_SIZE(action));
}
/*
* Select, assign and relase doorbell cachelines
*
* These functions track which doorbell cachelines are in use.
- * The data they manipulate is protected by the guc_send lock.
+ * The data they manipulate is protected by the intel_guc_send lock.
*/
static uint32_t select_doorbell_cacheline(struct intel_guc *guc)
}
guc->execbuf_client = client;
- guc_sample_forcewake(guc, client);
+ intel_guc_sample_forcewake(guc);
guc_init_doorbell_hw(guc);
/* Take over from manual control of ELSP (execlists) */
/* first page is shared data with GuC */
data[2] = i915_ggtt_offset(ctx->engine[RCS].state);
- return guc_send(guc, data, ARRAY_SIZE(data));
+ return intel_guc_send(guc, data, ARRAY_SIZE(data));
}
/* first page is shared data with GuC */
data[2] = i915_ggtt_offset(ctx->engine[RCS].state);
- return guc_send(guc, data, ARRAY_SIZE(data));
+ return intel_guc_send(guc, data, ARRAY_SIZE(data));
}
void i915_guc_capture_logs(struct drm_i915_private *dev_priv)
* time, so get/put should be really quick.
*/
intel_runtime_pm_get(dev_priv);
- guc_logbuffer_flush_complete(&dev_priv->guc);
+ intel_guc_log_flush_complete(&dev_priv->guc);
intel_runtime_pm_put(dev_priv);
}
flush_work(&dev_priv->guc.log.flush_work);
/* Ask GuC to update the log buffer state */
- guc_force_logbuffer_flush(&dev_priv->guc);
+ intel_guc_log_flush(&dev_priv->guc);
/* GuC would have updated log buffer by now, so capture it */
i915_guc_capture_logs(dev_priv);
if (!log_param.logging_enabled && (i915.guc_log_level < 0))
return 0;
- ret = guc_logging_control(&dev_priv->guc, log_param.value);
+ ret = intel_guc_log_control(&dev_priv->guc, log_param.value);
if (ret < 0) {
DRM_DEBUG_DRIVER("guc_logging_control action failed %d\n", ret);
return ret;
--- /dev/null
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include "i915_drv.h"
+#include "intel_uc.h"
+
+/*
+ * Read GuC command/status register (SOFT_SCRATCH_0)
+ * Return true if it contains a response rather than a command
+ */
+bool intel_guc_recv(struct drm_i915_private *dev_priv, u32 *status)
+{
+ u32 val = I915_READ(SOFT_SCRATCH(0));
+ *status = val;
+ return INTEL_GUC_RECV_IS_RESPONSE(val);
+}
+
+int intel_guc_send(struct intel_guc *guc, const u32 *action, u32 len)
+{
+ struct drm_i915_private *dev_priv = guc_to_i915(guc);
+ u32 status;
+ int i;
+ int ret;
+
+ if (WARN_ON(len < 1 || len > 15))
+ return -EINVAL;
+
+ mutex_lock(&guc->send_mutex);
+ intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
+
+ dev_priv->guc.action_count += 1;
+ dev_priv->guc.action_cmd = action[0];
+
+ for (i = 0; i < len; i++)
+ I915_WRITE(SOFT_SCRATCH(i), action[i]);
+
+ POSTING_READ(SOFT_SCRATCH(i - 1));
+
+ I915_WRITE(GUC_SEND_INTERRUPT, GUC_SEND_TRIGGER);
+
+ /*
+ * Fast commands should complete in less than 10us, so sample quickly
+ * up to that length of time, then switch to a slower sleep-wait loop.
+ * No inte_guc_send command should ever take longer than 10ms.
+ */
+ ret = wait_for_us(intel_guc_recv(dev_priv, &status), 10);
+ if (ret)
+ ret = wait_for(intel_guc_recv(dev_priv, &status), 10);
+ if (status != INTEL_GUC_STATUS_SUCCESS) {
+ /*
+ * Either the GuC explicitly returned an error (which
+ * we convert to -EIO here) or no response at all was
+ * received within the timeout limit (-ETIMEDOUT)
+ */
+ if (ret != -ETIMEDOUT)
+ ret = -EIO;
+
+ DRM_WARN("INTEL_GUC_SEND: Action 0x%X failed;"
+ " ret=%d status=0x%08X response=0x%08X\n",
+ action[0], ret, status, I915_READ(SOFT_SCRATCH(15)));
+
+ dev_priv->guc.action_fail += 1;
+ dev_priv->guc.action_err = ret;
+ }
+ dev_priv->guc.action_status = status;
+
+ intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
+ mutex_unlock(&guc->send_mutex);
+
+ return ret;
+}
+
+int intel_guc_sample_forcewake(struct intel_guc *guc)
+{
+ struct drm_i915_private *dev_priv = guc_to_i915(guc);
+ u32 action[2];
+
+ action[0] = INTEL_GUC_ACTION_SAMPLE_FORCEWAKE;
+ /* WaRsDisableCoarsePowerGating:skl,bxt */
+ if (!intel_enable_rc6() || NEEDS_WaRsDisableCoarsePowerGating(dev_priv))
+ action[1] = 0;
+ else
+ /* bit 0 and 1 are for Render and Media domain separately */
+ action[1] = GUC_FORCEWAKE_RENDER | GUC_FORCEWAKE_MEDIA;
+
+ return intel_guc_send(guc, action, ARRAY_SIZE(action));
+}
+
+int intel_guc_log_flush_complete(struct intel_guc *guc)
+{
+ u32 action[] = { INTEL_GUC_ACTION_LOG_BUFFER_FILE_FLUSH_COMPLETE };
+
+ return intel_guc_send(guc, action, ARRAY_SIZE(action));
+}
+
+int intel_guc_log_flush(struct intel_guc *guc)
+{
+ u32 action[] = {
+ INTEL_GUC_ACTION_FORCE_LOG_BUFFER_FLUSH,
+ 0
+ };
+
+ return intel_guc_send(guc, action, ARRAY_SIZE(action));
+}
+
+int intel_guc_log_control(struct intel_guc *guc, u32 control_val)
+{
+ u32 action[] = {
+ INTEL_GUC_ACTION_UK_LOG_ENABLE_LOGGING,
+ control_val
+ };
+
+ return intel_guc_send(guc, action, ARRAY_SIZE(action));
+}
projects / karo-tx-linux.git / commitdiff