drm/i915/guc: Drop guc2host/host2guc from names

To facilitate code reorganization we are renaming everything that
contains guc2host or host2guc.

host2guc_action() and host2guc_action_response() become guc_send()
and guc_recv() respectively.

Other host2guc_*() functions become simply guc_*().

Other entities are renamed basing on context they appear in:
 - HOST2GUC_ACTIONS_&           become INTEL_GUC_ACTION_*
 - HOST2GUC_{INTERRUPT,TRIGGER} become GUC_SEND_{INTERRUPT,TRIGGER}
 - GUC2HOST_STATUS_*            become INTEL_GUC_STATUS_*
 - GUC2HOST_MSG_*               become INTEL_GUC_RECV_MSG_*
 - action_lock                 becomes send_mutex

v2: drop unnecessary backslashes and use BIT() instead of '<<'
v3: shortened enum names and INTEL_GUC_STATUS_*

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Winiarski <michal.winiarski@intel.com>
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1480096777-12573-3-git-send-email-arkadiusz.hiler@intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

drivers/gpu/drm/i915/i915_guc_reg.h

@@ -100,8 +100,8 @@
 				 GUC_ENABLE_READ_CACHE_FOR_WOPCM_DATA	| \
 				 GUC_ENABLE_MIA_CLOCK_GATING)
 
-#define HOST2GUC_INTERRUPT		_MMIO(0xc4c8)
-#define   HOST2GUC_TRIGGER		  (1<<0)
+#define GUC_SEND_INTERRUPT		_MMIO(0xc4c8)
+#define   GUC_SEND_TRIGGER		  (1<<0)
 
 #define GEN8_DRBREGL(x)			_MMIO(0x1000 + (x) * 8)
 #define   GEN8_DRB_VALID		  (1<<0)

drivers/gpu/drm/i915/i915_guc_submission.c

@@ -49,7 +49,7 @@
  * 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 host2guc_action()
+ * See guc_send()
  *
  * Doorbells:
  * Doorbells are interrupts to uKernel. A doorbell is a single cache line (QW)
@@ -69,15 +69,14 @@
  * Read GuC command/status register (SOFT_SCRATCH_0)
  * Return true if it contains a response rather than a command
  */
-static inline bool host2guc_action_response(struct drm_i915_private *dev_priv,
-					    u32 *status)
+static inline bool guc_recv(struct drm_i915_private *dev_priv, u32 *status)
 {
 	u32 val = I915_READ(SOFT_SCRATCH(0));
 	*status = val;
-	return GUC2HOST_IS_RESPONSE(val);
+	return INTEL_GUC_RECV_IS_RESPONSE(val);
 }
 
-static int host2guc_action(struct intel_guc *guc, u32 *data, u32 len)
+static int guc_send(struct intel_guc *guc, u32 *data, u32 len)
 {
 	struct drm_i915_private *dev_priv = guc_to_i915(guc);
 	u32 status;
@@ -87,7 +86,7 @@ static int host2guc_action(struct intel_guc *guc, u32 *data, u32 len)
 	if (WARN_ON(len < 1 || len > 15))
 		return -EINVAL;
 
-	mutex_lock(&guc->action_lock);
+	mutex_lock(&guc->send_mutex);
 	intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
 
 	dev_priv->guc.action_count += 1;
@@ -98,17 +97,17 @@ static int host2guc_action(struct intel_guc *guc, u32 *data, u32 len)
 
 	POSTING_READ(SOFT_SCRATCH(i - 1));
 
-	I915_WRITE(HOST2GUC_INTERRUPT, HOST2GUC_TRIGGER);
+	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 HOST2GUC command should ever take longer than 10ms.
+	 * No INTEL_GUC_ACTION command should ever take longer than 10ms.
 	 */
-	ret = wait_for_us(host2guc_action_response(dev_priv, &status), 10);
+	ret = wait_for_us(guc_recv(dev_priv, &status), 10);
 	if (ret)
-		ret = wait_for(host2guc_action_response(dev_priv, &status), 10);
-	if (status != GUC2HOST_STATUS_SUCCESS) {
+		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
@@ -126,7 +125,7 @@ static int host2guc_action(struct intel_guc *guc, u32 *data, u32 len)
 	dev_priv->guc.action_status = status;
 
 	intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
-	mutex_unlock(&guc->action_lock);
+	mutex_unlock(&guc->send_mutex);
 
 	return ret;
 }
@@ -135,35 +134,35 @@ static int host2guc_action(struct intel_guc *guc, u32 *data, u32 len)
  * Tell the GuC to allocate or deallocate a specific doorbell
  */
 
-static int host2guc_allocate_doorbell(struct intel_guc *guc,
-				      struct i915_guc_client *client)
+static int guc_allocate_doorbell(struct intel_guc *guc,
+				 struct i915_guc_client *client)
 {
 	u32 data[2];
 
-	data[0] = HOST2GUC_ACTION_ALLOCATE_DOORBELL;
+	data[0] = INTEL_GUC_ACTION_ALLOCATE_DOORBELL;
 	data[1] = client->ctx_index;
 
-	return host2guc_action(guc, data, 2);
+	return guc_send(guc, data, 2);
 }
 
-static int host2guc_release_doorbell(struct intel_guc *guc,
-				     struct i915_guc_client *client)
+static int guc_release_doorbell(struct intel_guc *guc,
+				struct i915_guc_client *client)
 {
 	u32 data[2];
 
-	data[0] = HOST2GUC_ACTION_DEALLOCATE_DOORBELL;
+	data[0] = INTEL_GUC_ACTION_DEALLOCATE_DOORBELL;
 	data[1] = client->ctx_index;
 
-	return host2guc_action(guc, data, 2);
+	return guc_send(guc, data, 2);
 }
 
-static int host2guc_sample_forcewake(struct intel_guc *guc,
-				     struct i915_guc_client *client)
+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] = HOST2GUC_ACTION_SAMPLE_FORCEWAKE;
+	data[0] = INTEL_GUC_ACTION_SAMPLE_FORCEWAKE;
 	/* WaRsDisableCoarsePowerGating:skl,bxt */
 	if (!intel_enable_rc6() || NEEDS_WaRsDisableCoarsePowerGating(dev_priv))
 		data[1] = 0;
@@ -171,36 +170,36 @@ static int host2guc_sample_forcewake(struct intel_guc *guc,
 		/* bit 0 and 1 are for Render and Media domain separately */
 		data[1] = GUC_FORCEWAKE_RENDER | GUC_FORCEWAKE_MEDIA;
 
-	return host2guc_action(guc, data, ARRAY_SIZE(data));
+	return guc_send(guc, data, ARRAY_SIZE(data));
 }
 
-static int host2guc_logbuffer_flush_complete(struct intel_guc *guc)
+static int guc_logbuffer_flush_complete(struct intel_guc *guc)
 {
 	u32 data[1];
 
-	data[0] = HOST2GUC_ACTION_LOG_BUFFER_FILE_FLUSH_COMPLETE;
+	data[0] = INTEL_GUC_ACTION_LOG_BUFFER_FILE_FLUSH_COMPLETE;
 
-	return host2guc_action(guc, data, 1);
+	return guc_send(guc, data, 1);
 }
 
-static int host2guc_force_logbuffer_flush(struct intel_guc *guc)
+static int guc_force_logbuffer_flush(struct intel_guc *guc)
 {
 	u32 data[2];
 
-	data[0] = HOST2GUC_ACTION_FORCE_LOG_BUFFER_FLUSH;
+	data[0] = INTEL_GUC_ACTION_FORCE_LOG_BUFFER_FLUSH;
 	data[1] = 0;
 
-	return host2guc_action(guc, data, 2);
+	return guc_send(guc, data, 2);
 }
 
-static int host2guc_logging_control(struct intel_guc *guc, u32 control_val)
+static int guc_logging_control(struct intel_guc *guc, u32 control_val)
 {
 	u32 data[2];
 
-	data[0] = HOST2GUC_ACTION_UK_LOG_ENABLE_LOGGING;
+	data[0] = INTEL_GUC_ACTION_UK_LOG_ENABLE_LOGGING;
 	data[1] = control_val;
 
-	return host2guc_action(guc, data, 2);
+	return guc_send(guc, data, 2);
 }
 
 /*
@@ -226,7 +225,7 @@ static int guc_update_doorbell_id(struct intel_guc *guc,
 	    test_bit(client->doorbell_id, doorbell_bitmap)) {
 		/* Deactivate the old doorbell */
 		doorbell->db_status = GUC_DOORBELL_DISABLED;
-		(void)host2guc_release_doorbell(guc, client);
+		(void)guc_release_doorbell(guc, client);
 		__clear_bit(client->doorbell_id, doorbell_bitmap);
 	}
 
@@ -249,7 +248,7 @@ static int guc_update_doorbell_id(struct intel_guc *guc,
 	__set_bit(new_id, doorbell_bitmap);
 	doorbell->cookie = 0;
 	doorbell->db_status = GUC_DOORBELL_ENABLED;
-	return host2guc_allocate_doorbell(guc, client);
+	return guc_allocate_doorbell(guc, client);
 }
 
 static int guc_init_doorbell(struct intel_guc *guc,
@@ -298,7 +297,7 @@ select_doorbell_register(struct intel_guc *guc, uint32_t priority)
  * Select, assign and relase doorbell cachelines
  *
  * These functions track which doorbell cachelines are in use.
- * The data they manipulate is protected by the host2guc lock.
+ * The data they manipulate is protected by the guc_send lock.
  */
 
 static uint32_t select_doorbell_cacheline(struct intel_guc *guc)
@@ -1500,7 +1499,7 @@ int i915_guc_submission_init(struct drm_i915_private *dev_priv)
 
 	guc->ctx_pool_vma = vma;
 	ida_init(&guc->ctx_ids);
-	mutex_init(&guc->action_lock);
+	mutex_init(&guc->send_mutex);
 	guc_log_create(guc);
 	guc_addon_create(guc);
 
@@ -1526,7 +1525,7 @@ int i915_guc_submission_enable(struct drm_i915_private *dev_priv)
 	}
 
 	guc->execbuf_client = client;
-	host2guc_sample_forcewake(guc, client);
+	guc_sample_forcewake(guc, client);
 	guc_init_doorbell_hw(guc);
 
 	/* Take over from manual control of ELSP (execlists) */
@@ -1590,13 +1589,13 @@ int intel_guc_suspend(struct drm_device *dev)
 
 	ctx = dev_priv->kernel_context;
 
-	data[0] = HOST2GUC_ACTION_ENTER_S_STATE;
+	data[0] = INTEL_GUC_ACTION_ENTER_S_STATE;
 	/* any value greater than GUC_POWER_D0 */
 	data[1] = GUC_POWER_D1;
 	/* first page is shared data with GuC */
 	data[2] = i915_ggtt_offset(ctx->engine[RCS].state);
 
-	return host2guc_action(guc, data, ARRAY_SIZE(data));
+	return guc_send(guc, data, ARRAY_SIZE(data));
 }
 
 
@@ -1619,12 +1618,12 @@ int intel_guc_resume(struct drm_device *dev)
 
 	ctx = dev_priv->kernel_context;
 
-	data[0] = HOST2GUC_ACTION_EXIT_S_STATE;
+	data[0] = INTEL_GUC_ACTION_EXIT_S_STATE;
 	data[1] = GUC_POWER_D0;
 	/* first page is shared data with GuC */
 	data[2] = i915_ggtt_offset(ctx->engine[RCS].state);
 
-	return host2guc_action(guc, data, ARRAY_SIZE(data));
+	return guc_send(guc, data, ARRAY_SIZE(data));
 }
 
 void i915_guc_capture_logs(struct drm_i915_private *dev_priv)
@@ -1635,7 +1634,7 @@ 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);
-	host2guc_logbuffer_flush_complete(&dev_priv->guc);
+	guc_logbuffer_flush_complete(&dev_priv->guc);
 	intel_runtime_pm_put(dev_priv);
 }
 
@@ -1653,7 +1652,7 @@ void i915_guc_flush_logs(struct drm_i915_private *dev_priv)
 	flush_work(&dev_priv->guc.log.flush_work);
 
 	/* Ask GuC to update the log buffer state */
-	host2guc_force_logbuffer_flush(&dev_priv->guc);
+	guc_force_logbuffer_flush(&dev_priv->guc);
 
 	/* GuC would have updated log buffer by now, so capture it */
 	i915_guc_capture_logs(dev_priv);
@@ -1694,9 +1693,9 @@ int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val)
 	if (!log_param.logging_enabled && (i915.guc_log_level < 0))
 		return 0;
 
-	ret = host2guc_logging_control(&dev_priv->guc, log_param.value);
+	ret = guc_logging_control(&dev_priv->guc, log_param.value);
 	if (ret < 0) {
-		DRM_DEBUG_DRIVER("host2guc action failed %d\n", ret);
+		DRM_DEBUG_DRIVER("guc_logging_control action failed %d\n", ret);
 		return ret;
 	}
 

drivers/gpu/drm/i915/i915_irq.c

@@ -1683,8 +1683,8 @@ static void gen9_guc_irq_handler(struct drm_i915_private *dev_priv, u32 gt_iir)
 		u32 msg, flush;
 
 		msg = I915_READ(SOFT_SCRATCH(15));
-		flush = msg & (GUC2HOST_MSG_CRASH_DUMP_POSTED |
-			       GUC2HOST_MSG_FLUSH_LOG_BUFFER);
+		flush = msg & (INTEL_GUC_RECV_MSG_CRASH_DUMP_POSTED |
+			       INTEL_GUC_RECV_MSG_FLUSH_LOG_BUFFER);
 		if (flush) {
 			/* Clear the message bits that are handled */
 			I915_WRITE(SOFT_SCRATCH(15), msg & ~flush);

drivers/gpu/drm/i915/intel_guc_fwif.h

@@ -489,18 +489,18 @@ union guc_log_control {
 } __packed;
 
 /* This Action will be programmed in C180 - SOFT_SCRATCH_O_REG */
-enum host2guc_action {
-	HOST2GUC_ACTION_DEFAULT = 0x0,
-	HOST2GUC_ACTION_SAMPLE_FORCEWAKE = 0x6,
-	HOST2GUC_ACTION_ALLOCATE_DOORBELL = 0x10,
-	HOST2GUC_ACTION_DEALLOCATE_DOORBELL = 0x20,
-	HOST2GUC_ACTION_LOG_BUFFER_FILE_FLUSH_COMPLETE = 0x30,
-	HOST2GUC_ACTION_FORCE_LOG_BUFFER_FLUSH = 0x302,
-	HOST2GUC_ACTION_ENTER_S_STATE = 0x501,
-	HOST2GUC_ACTION_EXIT_S_STATE = 0x502,
-	HOST2GUC_ACTION_SLPC_REQUEST = 0x3003,
-	HOST2GUC_ACTION_UK_LOG_ENABLE_LOGGING = 0x0E000,
-	HOST2GUC_ACTION_LIMIT
+enum intel_guc_action {
+	INTEL_GUC_ACTION_DEFAULT = 0x0,
+	INTEL_GUC_ACTION_SAMPLE_FORCEWAKE = 0x6,
+	INTEL_GUC_ACTION_ALLOCATE_DOORBELL = 0x10,
+	INTEL_GUC_ACTION_DEALLOCATE_DOORBELL = 0x20,
+	INTEL_GUC_ACTION_LOG_BUFFER_FILE_FLUSH_COMPLETE = 0x30,
+	INTEL_GUC_ACTION_FORCE_LOG_BUFFER_FLUSH = 0x302,
+	INTEL_GUC_ACTION_ENTER_S_STATE = 0x501,
+	INTEL_GUC_ACTION_EXIT_S_STATE = 0x502,
+	INTEL_GUC_ACTION_SLPC_REQUEST = 0x3003,
+	INTEL_GUC_ACTION_UK_LOG_ENABLE_LOGGING = 0x0E000,
+	INTEL_GUC_ACTION_LIMIT
 };
 
 /*
@@ -509,22 +509,22 @@ enum host2guc_action {
  * by the fact that all the MASK bits are set. The remaining bits
  * give more detail.
  */
-#define	GUC2HOST_RESPONSE_MASK		((u32)0xF0000000)
-#define	GUC2HOST_IS_RESPONSE(x) 	((u32)(x) >= GUC2HOST_RESPONSE_MASK)
-#define	GUC2HOST_STATUS(x)		(GUC2HOST_RESPONSE_MASK | (x))
+#define	INTEL_GUC_RECV_MASK	((u32)0xF0000000)
+#define	INTEL_GUC_RECV_IS_RESPONSE(x)	((u32)(x) >= INTEL_GUC_RECV_MASK)
+#define	INTEL_GUC_RECV_STATUS(x)	(INTEL_GUC_RECV_MASK | (x))
 
 /* GUC will return status back to SOFT_SCRATCH_O_REG */
-enum guc2host_status {
-	GUC2HOST_STATUS_SUCCESS = GUC2HOST_STATUS(0x0),
-	GUC2HOST_STATUS_ALLOCATE_DOORBELL_FAIL = GUC2HOST_STATUS(0x10),
-	GUC2HOST_STATUS_DEALLOCATE_DOORBELL_FAIL = GUC2HOST_STATUS(0x20),
-	GUC2HOST_STATUS_GENERIC_FAIL = GUC2HOST_STATUS(0x0000F000)
+enum intel_guc_status {
+	INTEL_GUC_STATUS_SUCCESS = INTEL_GUC_RECV_STATUS(0x0),
+	INTEL_GUC_STATUS_ALLOCATE_DOORBELL_FAIL = INTEL_GUC_RECV_STATUS(0x10),
+	INTEL_GUC_STATUS_DEALLOCATE_DOORBELL_FAIL = INTEL_GUC_RECV_STATUS(0x20),
+	INTEL_GUC_STATUS_GENERIC_FAIL = INTEL_GUC_RECV_STATUS(0x0000F000)
 };
 
 /* This action will be programmed in C1BC - SOFT_SCRATCH_15_REG */
-enum guc2host_message {
-	GUC2HOST_MSG_CRASH_DUMP_POSTED = (1 << 1),
-	GUC2HOST_MSG_FLUSH_LOG_BUFFER = (1 << 3)
+enum intel_guc_recv_message {
+	INTEL_GUC_RECV_MSG_CRASH_DUMP_POSTED = BIT(1),
+	INTEL_GUC_RECV_MSG_FLUSH_LOG_BUFFER = BIT(3)
 };
 
 #endif

drivers/gpu/drm/i915/intel_uc.h

@@ -142,7 +142,7 @@ struct intel_guc {
 	struct intel_guc_fw guc_fw;
 	struct intel_guc_log log;
 
-	/* GuC2Host interrupt related state */
+	/* intel_guc_recv interrupt related state */
 	bool interrupts_enabled;
 
 	struct i915_vma *ads_vma;
@@ -164,8 +164,8 @@ struct intel_guc {
 	uint64_t submissions[I915_NUM_ENGINES];
 	uint32_t last_seqno[I915_NUM_ENGINES];
 
-	/* To serialize the Host2GuC actions */
-	struct mutex action_lock;
+	/* To serialize the intel_guc_send actions */
+	struct mutex send_mutex;
 };
 
 /* intel_guc_loader.c */