1 files changed, 168 insertions, 26 deletions

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_hfi.c b/drivers/gpu/drm/msm/adreno/a6xx_hfi.c
index cdb3f6e74d3e..8e69b1e84657 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_hfi.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_hfi.c
@@ -6,6 +6,7 @@
 #include <linux/list.h>
 
 #include <soc/qcom/cmd-db.h>
+#include <soc/qcom/tcs.h>
 
 #include "a6xx_gmu.h"
 #include "a6xx_gmu.xml.h"
@@ -99,16 +100,14 @@ static int a6xx_hfi_queue_write(struct a6xx_gmu *gmu,
 	return 0;
 }
 
-static int a6xx_hfi_wait_for_ack(struct a6xx_gmu *gmu, u32 id, u32 seqnum,
-		u32 *payload, u32 payload_size)
+static int a6xx_hfi_wait_for_msg_interrupt(struct a6xx_gmu *gmu, u32 id, u32 seqnum)
 {
-	struct a6xx_hfi_queue *queue = &gmu->queues[HFI_RESPONSE_QUEUE];
-	u32 val;
 	int ret;
+	u32 val;
 
 	/* Wait for a response */
 	ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO, val,
-		val & A6XX_GMU_GMU2HOST_INTR_INFO_MSGQ, 100, 5000);
+		val & A6XX_GMU_GMU2HOST_INTR_INFO_MSGQ, 100, 1000000);
 
 	if (ret) {
 		DRM_DEV_ERROR(gmu->dev,
@@ -121,6 +120,19 @@ static int a6xx_hfi_wait_for_ack(struct a6xx_gmu *gmu, u32 id, u32 seqnum,
 	gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR,
 		A6XX_GMU_GMU2HOST_INTR_INFO_MSGQ);
 
+	return 0;
+}
+
+static int a6xx_hfi_wait_for_ack(struct a6xx_gmu *gmu, u32 id, u32 seqnum,
+		u32 *payload, u32 payload_size)
+{
+	struct a6xx_hfi_queue *queue = &gmu->queues[HFI_RESPONSE_QUEUE];
+	int ret;
+
+	ret = a6xx_hfi_wait_for_msg_interrupt(gmu, id, seqnum);
+	if (ret)
+		return ret;
+
 	for (;;) {
 		struct a6xx_hfi_msg_response resp;
 
@@ -128,12 +140,18 @@ static int a6xx_hfi_wait_for_ack(struct a6xx_gmu *gmu, u32 id, u32 seqnum,
 		ret = a6xx_hfi_queue_read(gmu, queue, (u32 *) &resp,
 			sizeof(resp) >> 2);
 
-		/* If the queue is empty our response never made it */
+		/* If the queue is empty, there may have been previous missed
+		 * responses that preceded the response to our packet. Wait
+		 * further before we give up.
+		 */
 		if (!ret) {
-			DRM_DEV_ERROR(gmu->dev,
-				"The HFI response queue is unexpectedly empty\n");
-
-			return -ENOENT;
+			ret = a6xx_hfi_wait_for_msg_interrupt(gmu, id, seqnum);
+			if (ret) {
+				DRM_DEV_ERROR(gmu->dev,
+					"The HFI response queue is unexpectedly empty\n");
+				return ret;
+			}
+			continue;
 		}
 
 		if (HFI_HEADER_ID(resp.header) == HFI_F2H_MSG_ERROR) {
@@ -259,6 +277,48 @@ static int a6xx_hfi_send_perf_table(struct a6xx_gmu *gmu)
 		NULL, 0);
 }
 
+static void a6xx_generate_bw_table(const struct a6xx_info *info, struct a6xx_gmu *gmu,
+				   struct a6xx_hfi_msg_bw_table *msg)
+{
+	unsigned int i, j;
+
+	for (i = 0; i < GMU_MAX_BCMS; i++) {
+		if (!info->bcms[i].name)
+			break;
+		msg->ddr_cmds_addrs[i] = cmd_db_read_addr(info->bcms[i].name);
+	}
+	msg->ddr_cmds_num = i;
+
+	for (i = 0; i < gmu->nr_gpu_bws; ++i)
+		for (j = 0; j < msg->ddr_cmds_num; j++)
+			msg->ddr_cmds_data[i][j] = gmu->gpu_ib_votes[i][j];
+	msg->bw_level_num = gmu->nr_gpu_bws;
+
+	/* Compute the wait bitmask with each BCM having the commit bit */
+	msg->ddr_wait_bitmask = 0;
+	for (j = 0; j < msg->ddr_cmds_num; j++)
+		if (msg->ddr_cmds_data[0][j] & BCM_TCS_CMD_COMMIT_MASK)
+			msg->ddr_wait_bitmask |= BIT(j);
+
+	/*
+	 * These are the CX (CNOC) votes - these are used by the GMU
+	 * The 'CN0' BCM is used on all targets, and votes are basically
+	 * 'off' and 'on' states with first bit to enable the path.
+	 */
+
+	msg->cnoc_cmds_addrs[0] = cmd_db_read_addr("CN0");
+	msg->cnoc_cmds_num = 1;
+
+	msg->cnoc_cmds_data[0][0] = BCM_TCS_CMD(true, false, 0, 0);
+	msg->cnoc_cmds_data[1][0] = BCM_TCS_CMD(true, true, 0, BIT(0));
+
+	/* Compute the wait bitmask with each BCM having the commit bit */
+	msg->cnoc_wait_bitmask = 0;
+	for (j = 0; j < msg->cnoc_cmds_num; j++)
+		if (msg->cnoc_cmds_data[0][j] & BCM_TCS_CMD_COMMIT_MASK)
+			msg->cnoc_wait_bitmask |= BIT(j);
+}
+
 static void a618_build_bw_table(struct a6xx_hfi_msg_bw_table *msg)
 {
 	/* Send a single "off" entry since the 618 GMU doesn't do bus scaling */
@@ -478,6 +538,37 @@ static void a660_build_bw_table(struct a6xx_hfi_msg_bw_table *msg)
 	msg->cnoc_cmds_data[1][0] =  0x60000001;
 }
 
+static void a663_build_bw_table(struct a6xx_hfi_msg_bw_table *msg)
+{
+	/*
+	 * Send a single "off" entry just to get things running
+	 * TODO: bus scaling
+	 */
+	msg->bw_level_num = 1;
+
+	msg->ddr_cmds_num = 3;
+	msg->ddr_wait_bitmask = 0x07;
+
+	msg->ddr_cmds_addrs[0] = 0x50004;
+	msg->ddr_cmds_addrs[1] = 0x50000;
+	msg->ddr_cmds_addrs[2] = 0x500b4;
+
+	msg->ddr_cmds_data[0][0] =  0x40000000;
+	msg->ddr_cmds_data[0][1] =  0x40000000;
+	msg->ddr_cmds_data[0][2] =  0x40000000;
+
+	/*
+	 * These are the CX (CNOC) votes - these are used by the GMU but the
+	 * votes are known and fixed for the target
+	 */
+	msg->cnoc_cmds_num = 1;
+	msg->cnoc_wait_bitmask = 0x01;
+
+	msg->cnoc_cmds_addrs[0] = 0x50058;
+	msg->cnoc_cmds_data[0][0] =  0x40000000;
+	msg->cnoc_cmds_data[1][0] =  0x60000001;
+}
+
 static void adreno_7c3_build_bw_table(struct a6xx_hfi_msg_bw_table *msg)
 {
 	/*
@@ -630,35 +721,82 @@ static void a6xx_build_bw_table(struct a6xx_hfi_msg_bw_table *msg)
 
 static int a6xx_hfi_send_bw_table(struct a6xx_gmu *gmu)
 {
-	struct a6xx_hfi_msg_bw_table msg = { 0 };
+	struct a6xx_hfi_msg_bw_table *msg;
 	struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu);
 	struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
+	const struct a6xx_info *info = adreno_gpu->info->a6xx;
+
+	if (gmu->bw_table)
+		goto send;
+
+	msg = devm_kzalloc(gmu->dev, sizeof(*msg), GFP_KERNEL);
+	if (!msg)
+		return -ENOMEM;
 
-	if (adreno_is_a618(adreno_gpu))
-		a618_build_bw_table(&msg);
+	if (info->bcms && gmu->nr_gpu_bws > 1)
+		a6xx_generate_bw_table(info, gmu, msg);
+	else if (adreno_is_a618(adreno_gpu))
+		a618_build_bw_table(msg);
 	else if (adreno_is_a619(adreno_gpu))
-		a619_build_bw_table(&msg);
+		a619_build_bw_table(msg);
 	else if (adreno_is_a640_family(adreno_gpu))
-		a640_build_bw_table(&msg);
+		a640_build_bw_table(msg);
 	else if (adreno_is_a650(adreno_gpu))
-		a650_build_bw_table(&msg);
+		a650_build_bw_table(msg);
 	else if (adreno_is_7c3(adreno_gpu))
-		adreno_7c3_build_bw_table(&msg);
+		adreno_7c3_build_bw_table(msg);
 	else if (adreno_is_a660(adreno_gpu))
-		a660_build_bw_table(&msg);
+		a660_build_bw_table(msg);
+	else if (adreno_is_a663(adreno_gpu))
+		a663_build_bw_table(msg);
 	else if (adreno_is_a690(adreno_gpu))
-		a690_build_bw_table(&msg);
+		a690_build_bw_table(msg);
 	else if (adreno_is_a730(adreno_gpu))
-		a730_build_bw_table(&msg);
+		a730_build_bw_table(msg);
 	else if (adreno_is_a740_family(adreno_gpu))
-		a740_build_bw_table(&msg);
+		a740_build_bw_table(msg);
 	else
-		a6xx_build_bw_table(&msg);
+		a6xx_build_bw_table(msg);
 
-	return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_BW_TABLE, &msg, sizeof(msg),
+	gmu->bw_table = msg;
+
+send:
+	return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_BW_TABLE, gmu->bw_table, sizeof(*(gmu->bw_table)),
 		NULL, 0);
 }
 
+#define HFI_FEATURE_ACD 12
+
+static int a6xx_hfi_enable_acd(struct a6xx_gmu *gmu)
+{
+	struct a6xx_hfi_acd_table *acd_table = &gmu->acd_table;
+	struct a6xx_hfi_msg_feature_ctrl msg = {
+		.feature = HFI_FEATURE_ACD,
+		.enable = 1,
+		.data = 0,
+	};
+	int ret;
+
+	if (!acd_table->enable_by_level)
+		return 0;
+
+	/* Enable ACD feature at GMU */
+	ret = a6xx_hfi_send_msg(gmu, HFI_H2F_FEATURE_CTRL, &msg, sizeof(msg), NULL, 0);
+	if (ret) {
+		DRM_DEV_ERROR(gmu->dev, "Unable to enable ACD (%d)\n", ret);
+		return ret;
+	}
+
+	/* Send ACD table to GMU */
+	ret = a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_ACD, acd_table, sizeof(*acd_table), NULL, 0);
+	if (ret) {
+		DRM_DEV_ERROR(gmu->dev, "Unable to ACD table (%d)\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
 static int a6xx_hfi_send_test(struct a6xx_gmu *gmu)
 {
 	struct a6xx_hfi_msg_test msg = { 0 };
@@ -683,13 +821,13 @@ static int a6xx_hfi_send_core_fw_start(struct a6xx_gmu *gmu)
 		sizeof(msg), NULL, 0);
 }
 
-int a6xx_hfi_set_freq(struct a6xx_gmu *gmu, int index)
+int a6xx_hfi_set_freq(struct a6xx_gmu *gmu, u32 freq_index, u32 bw_index)
 {
 	struct a6xx_hfi_gx_bw_perf_vote_cmd msg = { 0 };
 
 	msg.ack_type = 1; /* blocking */
-	msg.freq = index;
-	msg.bw = 0; /* TODO: bus scaling */
+	msg.freq = freq_index;
+	msg.bw = bw_index;
 
 	return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_GX_BW_PERF_VOTE, &msg,
 		sizeof(msg), NULL, 0);
@@ -756,6 +894,10 @@ int a6xx_hfi_start(struct a6xx_gmu *gmu, int boot_state)
 	if (ret)
 		return ret;
 
+	ret = a6xx_hfi_enable_acd(gmu);
+	if (ret)
+		return ret;
+
 	ret = a6xx_hfi_send_core_fw_start(gmu);
 	if (ret)
 		return ret;