[PATCH 4/9] drm/msm/a6xx: HFI v2 for A640 and A650
From: Jonathan Marek
Date: Mon Apr 20 2020 - 10:03:55 EST
Signed-off-by: Jonathan Marek <jonathan@xxxxxxxx>
---
drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 68 ++++++++++++---
drivers/gpu/drm/msm/adreno/a6xx_gmu.h | 7 ++
drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 6 +-
drivers/gpu/drm/msm/adreno/a6xx_hfi.c | 117 ++++++++++++++++++++++++--
drivers/gpu/drm/msm/adreno/a6xx_hfi.h | 50 ++++++++++-
5 files changed, 224 insertions(+), 24 deletions(-)
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index c6ecb3189ec5..dc2d69837110 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -126,8 +126,6 @@ static void __a6xx_gmu_set_freq(struct a6xx_gmu *gmu, int index)
if (ret)
dev_err(gmu->dev, "GMU set GPU frequency error: %d\n", ret);
- gmu->freq = gmu->gpu_freqs[index];
-
/*
* Eventually we will want to scale the path vote with the frequency but
* for now leave it at max so that the performance is nominal.
@@ -151,7 +149,12 @@ void a6xx_gmu_set_freq(struct msm_gpu *gpu, unsigned long freq)
gmu->current_perf_index = perf_index;
- __a6xx_gmu_set_freq(gmu, perf_index);
+ if (gmu->legacy)
+ __a6xx_gmu_set_freq(gmu, perf_index);
+ else
+ a6xx_hfi_set_freq(gmu, perf_index);
+
+ gmu->freq = gmu->gpu_freqs[perf_index];
}
unsigned long a6xx_gmu_get_freq(struct msm_gpu *gpu)
@@ -231,19 +234,26 @@ int a6xx_gmu_set_oob(struct a6xx_gmu *gmu, enum a6xx_gmu_oob_state state)
switch (state) {
case GMU_OOB_GPU_SET:
- request = GMU_OOB_GPU_SET_REQUEST;
- ack = GMU_OOB_GPU_SET_ACK;
+ if (gmu->legacy) {
+ request = GMU_OOB_GPU_SET_REQUEST;
+ ack = GMU_OOB_GPU_SET_ACK;
+ } else {
+ request = GMU_OOB_GPU_SET_REQUEST_NEW;
+ ack = GMU_OOB_GPU_SET_ACK_NEW;
+ }
name = "GPU_SET";
break;
case GMU_OOB_BOOT_SLUMBER:
request = GMU_OOB_BOOT_SLUMBER_REQUEST;
ack = GMU_OOB_BOOT_SLUMBER_ACK;
name = "BOOT_SLUMBER";
+ WARN_ON(!gmu->legacy);
break;
case GMU_OOB_DCVS_SET:
request = GMU_OOB_DCVS_REQUEST;
ack = GMU_OOB_DCVS_ACK;
name = "GPU_DCVS";
+ WARN_ON(!gmu->legacy);
break;
default:
return -EINVAL;
@@ -271,6 +281,13 @@ int a6xx_gmu_set_oob(struct a6xx_gmu *gmu, enum a6xx_gmu_oob_state state)
/* Clear a pending OOB state in the GMU */
void a6xx_gmu_clear_oob(struct a6xx_gmu *gmu, enum a6xx_gmu_oob_state state)
{
+ if (!gmu->legacy) {
+ WARN_ON(state != GMU_OOB_GPU_SET);
+ gmu_write(gmu, REG_A6XX_GMU_HOST2GMU_INTR_SET,
+ 1 << GMU_OOB_GPU_SET_CLEAR_NEW);
+ return;
+ }
+
switch (state) {
case GMU_OOB_GPU_SET:
gmu_write(gmu, REG_A6XX_GMU_HOST2GMU_INTR_SET,
@@ -293,6 +310,9 @@ static int a6xx_sptprac_enable(struct a6xx_gmu *gmu)
int ret;
u32 val;
+ if (!gmu->legacy)
+ return 0;
+
gmu_write(gmu, REG_A6XX_GMU_GX_SPTPRAC_POWER_CONTROL, 0x778000);
ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS, val,
@@ -312,6 +332,9 @@ static void a6xx_sptprac_disable(struct a6xx_gmu *gmu)
u32 val;
int ret;
+ if (!gmu->legacy)
+ return;
+
/* Make sure retention is on */
gmu_rmw(gmu, REG_A6XX_GPU_CC_GX_GDSCR, 0, (1 << 11));
@@ -355,6 +378,11 @@ static int a6xx_gmu_notify_slumber(struct a6xx_gmu *gmu)
if (gmu->idle_level < GMU_IDLE_STATE_SPTP)
a6xx_sptprac_disable(gmu);
+ if (!gmu->legacy) {
+ ret = a6xx_hfi_send_prep_slumber(gmu);
+ goto out;
+ }
+
/* Tell the GMU to get ready to slumber */
gmu_write(gmu, REG_A6XX_GMU_BOOT_SLUMBER_OPTION, 1);
@@ -370,6 +398,7 @@ static int a6xx_gmu_notify_slumber(struct a6xx_gmu *gmu)
}
}
+out:
/* Put fence into allow mode */
gmu_write(gmu, REG_A6XX_GMU_AO_AHB_FENCE_CTRL, 0);
return ret;
@@ -639,9 +668,11 @@ static int a6xx_gmu_fw_start(struct a6xx_gmu *gmu, unsigned int state)
if (ret)
return ret;
- ret = a6xx_gmu_gfx_rail_on(gmu);
- if (ret)
- return ret;
+ if (gmu->legacy) {
+ ret = a6xx_gmu_gfx_rail_on(gmu);
+ if (ret)
+ return ret;
+ }
/* Enable SPTP_PC if the CPU is responsible for it */
if (gmu->idle_level < GMU_IDLE_STATE_SPTP) {
@@ -760,7 +791,10 @@ int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu)
enable_irq(gmu->hfi_irq);
/* Set the GPU to the current freq */
- __a6xx_gmu_set_freq(gmu, gmu->current_perf_index);
+ if (gmu->legacy)
+ __a6xx_gmu_set_freq(gmu, gmu->current_perf_index);
+ else
+ a6xx_hfi_set_freq(gmu, gmu->current_perf_index);
/*
* "enable" the GX power domain which won't actually do anything but it
@@ -1305,6 +1339,7 @@ void a6xx_gmu_remove(struct a6xx_gpu *a6xx_gpu)
int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node)
{
+ struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
struct platform_device *pdev = of_find_device_by_node(node);
int ret;
@@ -1331,16 +1366,21 @@ int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node)
if (ret)
goto err_put_device;
+ if (!adreno_is_a640(adreno_gpu) && !adreno_is_a650(adreno_gpu)) {
+ /* HFI v1, no sptprac */
+ gmu->legacy = true;
+
+ /* Allocate memory for the GMU debug region */
+ gmu->debug = a6xx_gmu_memory_alloc(gmu, SZ_16K, 0);
+ if (IS_ERR(gmu->debug))
+ goto err_memory;
+ }
+
/* Allocate memory for for the HFI queues */
gmu->hfi = a6xx_gmu_memory_alloc(gmu, SZ_16K, 0);
if (IS_ERR(gmu->hfi))
goto err_memory;
- /* Allocate memory for the GMU debug region */
- gmu->debug = a6xx_gmu_memory_alloc(gmu, SZ_16K, 0);
- if (IS_ERR(gmu->debug))
- goto err_memory;
-
/* Map the GMU registers */
gmu->mmio = a6xx_gmu_get_mmio(pdev, "gmu");
if (IS_ERR(gmu->mmio))
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.h b/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
index 2af91ed7ed0c..781714ffaa91 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
@@ -80,6 +80,7 @@ struct a6xx_gmu {
bool initialized;
bool hung;
+ bool legacy; /* a618 or a630 */
};
static inline u32 gmu_read(struct a6xx_gmu *gmu, u32 offset)
@@ -160,10 +161,16 @@ enum a6xx_gmu_oob_state {
#define GMU_OOB_GPU_SET_ACK 24
#define GMU_OOB_GPU_SET_CLEAR 24
+#define GMU_OOB_GPU_SET_REQUEST_NEW 30
+#define GMU_OOB_GPU_SET_ACK_NEW 31
+#define GMU_OOB_GPU_SET_CLEAR_NEW 31
+
void a6xx_hfi_init(struct a6xx_gmu *gmu);
int a6xx_hfi_start(struct a6xx_gmu *gmu, int boot_state);
void a6xx_hfi_stop(struct a6xx_gmu *gmu);
+int a6xx_hfi_send_prep_slumber(struct a6xx_gmu *gmu);
+int a6xx_hfi_set_freq(struct a6xx_gmu *gmu, int index);
bool a6xx_gmu_gx_is_on(struct a6xx_gmu *gmu);
bool a6xx_gmu_sptprac_is_on(struct a6xx_gmu *gmu);
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 68af24150de5..a860d4970e10 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -566,8 +566,10 @@ static int a6xx_hw_init(struct msm_gpu *gpu)
*/
a6xx_gmu_clear_oob(&a6xx_gpu->gmu, GMU_OOB_GPU_SET);
- /* Take the GMU out of its special boot mode */
- a6xx_gmu_clear_oob(&a6xx_gpu->gmu, GMU_OOB_BOOT_SLUMBER);
+ if (a6xx_gpu->gmu.legacy) {
+ /* Take the GMU out of its special boot mode */
+ a6xx_gmu_clear_oob(&a6xx_gpu->gmu, GMU_OOB_BOOT_SLUMBER);
+ }
return ret;
}
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_hfi.c b/drivers/gpu/drm/msm/adreno/a6xx_hfi.c
index e450e0b97211..3d4b142d8fb3 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_hfi.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_hfi.c
@@ -17,10 +17,14 @@ static const char * const a6xx_hfi_msg_id[] = {
HFI_MSG_ID(HFI_H2F_MSG_BW_TABLE),
HFI_MSG_ID(HFI_H2F_MSG_PERF_TABLE),
HFI_MSG_ID(HFI_H2F_MSG_TEST),
+ HFI_MSG_ID(HFI_H2F_MSG_START),
+ HFI_MSG_ID(HFI_H2F_MSG_CORE_FW_START),
+ HFI_MSG_ID(HFI_H2F_MSG_GX_BW_PERF_VOTE),
+ HFI_MSG_ID(HFI_H2F_MSG_PREPARE_SLUMBER),
};
-static int a6xx_hfi_queue_read(struct a6xx_hfi_queue *queue, u32 *data,
- u32 dwords)
+static int a6xx_hfi_queue_read(struct a6xx_gmu *gmu,
+ struct a6xx_hfi_queue *queue, u32 *data, u32 dwords)
{
struct a6xx_hfi_queue_header *header = queue->header;
u32 i, hdr, index = header->read_index;
@@ -48,6 +52,9 @@ static int a6xx_hfi_queue_read(struct a6xx_hfi_queue *queue, u32 *data,
index = (index + 1) % header->size;
}
+ if (!gmu->legacy)
+ index = ALIGN(index, 4) % header->size;
+
header->read_index = index;
return HFI_HEADER_SIZE(hdr);
}
@@ -73,6 +80,12 @@ static int a6xx_hfi_queue_write(struct a6xx_gmu *gmu,
index = (index + 1) % header->size;
}
+ /* Cookify any non used data at the end of the write buffer */
+ if (!gmu->legacy) {
+ for (; index % 4; index = (index + 1) % header->size)
+ queue->data[index] = 0xfafafafa;
+ }
+
header->write_index = index;
spin_unlock(&queue->lock);
@@ -106,7 +119,7 @@ static int a6xx_hfi_wait_for_ack(struct a6xx_gmu *gmu, u32 id, u32 seqnum,
struct a6xx_hfi_msg_response resp;
/* Get the next packet */
- ret = a6xx_hfi_queue_read(queue, (u32 *) &resp,
+ ret = a6xx_hfi_queue_read(gmu, queue, (u32 *) &resp,
sizeof(resp) >> 2);
/* If the queue is empty our response never made it */
@@ -195,6 +208,28 @@ static int a6xx_hfi_get_fw_version(struct a6xx_gmu *gmu, u32 *version)
version, sizeof(*version));
}
+static int a6xx_hfi_send_perf_table_v1(struct a6xx_gmu *gmu)
+{
+ struct a6xx_hfi_msg_perf_table_v1 msg = { 0 };
+ int i;
+
+ msg.num_gpu_levels = gmu->nr_gpu_freqs;
+ msg.num_gmu_levels = gmu->nr_gmu_freqs;
+
+ for (i = 0; i < gmu->nr_gpu_freqs; i++) {
+ msg.gx_votes[i].vote = gmu->gx_arc_votes[i];
+ msg.gx_votes[i].freq = gmu->gpu_freqs[i] / 1000;
+ }
+
+ for (i = 0; i < gmu->nr_gmu_freqs; i++) {
+ msg.cx_votes[i].vote = gmu->cx_arc_votes[i];
+ msg.cx_votes[i].freq = gmu->gmu_freqs[i] / 1000;
+ }
+
+ return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_PERF_TABLE, &msg, sizeof(msg),
+ NULL, 0);
+}
+
static int a6xx_hfi_send_perf_table(struct a6xx_gmu *gmu)
{
struct a6xx_hfi_msg_perf_table msg = { 0 };
@@ -205,6 +240,7 @@ static int a6xx_hfi_send_perf_table(struct a6xx_gmu *gmu)
for (i = 0; i < gmu->nr_gpu_freqs; i++) {
msg.gx_votes[i].vote = gmu->gx_arc_votes[i];
+ msg.gx_votes[i].acd = 0xffffffff;
msg.gx_votes[i].freq = gmu->gpu_freqs[i] / 1000;
}
@@ -306,7 +342,45 @@ static int a6xx_hfi_send_test(struct a6xx_gmu *gmu)
NULL, 0);
}
-int a6xx_hfi_start(struct a6xx_gmu *gmu, int boot_state)
+int a6xx_hfi_send_start(struct a6xx_gmu *gmu)
+{
+ struct a6xx_hfi_msg_start msg = { 0 };
+
+ return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_START, &msg, sizeof(msg),
+ NULL, 0);
+}
+
+int a6xx_hfi_send_core_fw_start(struct a6xx_gmu *gmu)
+{
+ struct a6xx_hfi_msg_core_fw_start msg = { 0 };
+
+ return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_CORE_FW_START, &msg,
+ sizeof(msg), NULL, 0);
+}
+
+int a6xx_hfi_set_freq(struct a6xx_gmu *gmu, int 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 */
+
+ return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_GX_BW_PERF_VOTE, &msg,
+ sizeof(msg), NULL, 0);
+}
+
+int a6xx_hfi_send_prep_slumber(struct a6xx_gmu *gmu)
+{
+ struct a6xx_hfi_prep_slumber_cmd msg = { 0 };
+
+ /* TODO: should freq and bw fields be non-zero ? */
+
+ return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_PREPARE_SLUMBER, &msg,
+ sizeof(msg), NULL, 0);
+}
+
+static int a6xx_hfi_start_v1(struct a6xx_gmu *gmu, int boot_state)
{
int ret;
@@ -324,7 +398,7 @@ int a6xx_hfi_start(struct a6xx_gmu *gmu, int boot_state)
* the GMU firmware
*/
- ret = a6xx_hfi_send_perf_table(gmu);
+ ret = a6xx_hfi_send_perf_table_v1(gmu);
if (ret)
return ret;
@@ -341,6 +415,37 @@ int a6xx_hfi_start(struct a6xx_gmu *gmu, int boot_state)
return 0;
}
+int a6xx_hfi_start(struct a6xx_gmu *gmu, int boot_state)
+{
+ int ret;
+
+ if (gmu->legacy)
+ return a6xx_hfi_start_v1(gmu, boot_state);
+
+
+ ret = a6xx_hfi_send_perf_table(gmu);
+ if (ret)
+ return ret;
+
+ ret = a6xx_hfi_send_bw_table(gmu);
+ if (ret)
+ return ret;
+
+ ret = a6xx_hfi_send_core_fw_start(gmu);
+ if (ret)
+ return ret;
+
+ /*
+ * Downstream driver sends this in its "a6xx_hw_init" equivalent,
+ * but seems to be no harm in sending it here
+ */
+ ret = a6xx_hfi_send_start(gmu);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
void a6xx_hfi_stop(struct a6xx_gmu *gmu)
{
int i;
@@ -415,5 +520,5 @@ void a6xx_hfi_init(struct a6xx_gmu *gmu)
/* GMU response queue */
offset += SZ_4K;
a6xx_hfi_queue_init(&gmu->queues[1], &headers[1], hfi->virt + offset,
- hfi->iova + offset, 4);
+ hfi->iova + offset, gmu->legacy ? 4 : 1);
}
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_hfi.h b/drivers/gpu/drm/msm/adreno/a6xx_hfi.h
index 60d1319fa44f..2bd670ca42d6 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_hfi.h
+++ b/drivers/gpu/drm/msm/adreno/a6xx_hfi.h
@@ -51,7 +51,8 @@ struct a6xx_hfi_queue {
/* HFI message types */
#define HFI_MSG_CMD 0
-#define HFI_MSG_ACK 2
+#define HFI_MSG_ACK 1
+#define HFI_MSG_ACK_V1 2
#define HFI_F2H_MSG_ACK 126
@@ -94,7 +95,13 @@ struct perf_level {
u32 freq;
};
-struct a6xx_hfi_msg_perf_table {
+struct perf_gx_level {
+ u32 vote;
+ u32 acd;
+ u32 freq;
+};
+
+struct a6xx_hfi_msg_perf_table_v1 {
u32 header;
u32 num_gpu_levels;
u32 num_gmu_levels;
@@ -103,6 +110,15 @@ struct a6xx_hfi_msg_perf_table {
struct perf_level cx_votes[4];
};
+struct a6xx_hfi_msg_perf_table {
+ u32 header;
+ u32 num_gpu_levels;
+ u32 num_gmu_levels;
+
+ struct perf_gx_level gx_votes[16];
+ struct perf_level cx_votes[4];
+};
+
#define HFI_H2F_MSG_BW_TABLE 3
struct a6xx_hfi_msg_bw_table {
@@ -124,4 +140,34 @@ struct a6xx_hfi_msg_test {
u32 header;
};
+#define HFI_H2F_MSG_START 10
+
+struct a6xx_hfi_msg_start {
+ u32 header;
+};
+
+#define HFI_H2F_MSG_CORE_FW_START 14
+
+struct a6xx_hfi_msg_core_fw_start {
+ u32 header;
+ u32 handle;
+};
+
+#define HFI_H2F_MSG_GX_BW_PERF_VOTE 30
+
+struct a6xx_hfi_gx_bw_perf_vote_cmd {
+ u32 header;
+ u32 ack_type;
+ u32 freq;
+ u32 bw;
+};
+
+#define HFI_H2F_MSG_PREPARE_SLUMBER 33
+
+struct a6xx_hfi_prep_slumber_cmd {
+ u32 header;
+ u32 bw;
+ u32 freq;
+};
+
#endif
--
2.26.1