[PATCH 3/7] habanalabs: sync stream generic functionality

From: Oded Gabbay
Date: Tue Jun 16 2020 - 02:13:49 EST

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From: Ofir Bitton <obitton@xxxxxxxxx>

Currently sync stream is limited only for external queues. We want to
remove this constraint by adding a new queue property dedicated for sync
stream. In addition we move the initialization and reset methods to the
common code since we can re-use them with slight changes.

Signed-off-by: Ofir Bitton <obitton@xxxxxxxxx>
Reviewed-by: Oded Gabbay <oded.gabbay@xxxxxxxxx>
Signed-off-by: Oded Gabbay <oded.gabbay@xxxxxxxxx>
---
drivers/misc/habanalabs/command_submission.c | 6 ++-
drivers/misc/habanalabs/gaudi/gaudi.c | 46 ++-----------------
drivers/misc/habanalabs/gaudi/gaudiP.h | 2 -
drivers/misc/habanalabs/goya/goya.c | 12 -----
drivers/misc/habanalabs/habanalabs.h | 19 ++++++--
drivers/misc/habanalabs/hw_queue.c | 48 ++++++++++++++++++--
6 files changed, 67 insertions(+), 66 deletions(-)

diff --git a/drivers/misc/habanalabs/command_submission.c b/drivers/misc/habanalabs/command_submission.c
index e156803f4a99..7b410bff72e0 100644
--- a/drivers/misc/habanalabs/command_submission.c
+++ b/drivers/misc/habanalabs/command_submission.c
@@ -727,6 +727,7 @@ static int cs_ioctl_signal_wait(struct hl_fpriv *hpriv, enum hl_cs_type cs_type,
struct hl_cs_job *job;
struct hl_cs *cs;
struct hl_cb *cb;
+ enum hl_queue_type q_type;
u64 *signal_seq_arr = NULL, signal_seq;
u32 size_to_copy, q_idx, signal_seq_arr_len, cb_size;
int rc;
@@ -759,9 +760,10 @@ static int cs_ioctl_signal_wait(struct hl_fpriv *hpriv, enum hl_cs_type cs_type,
chunk = &cs_chunk_array[0];
q_idx = chunk->queue_index;
hw_queue_prop = &hdev->asic_prop.hw_queues_props[q_idx];
+ q_type = hw_queue_prop->type;

if ((q_idx >= HL_MAX_QUEUES) ||
- (hw_queue_prop->type != QUEUE_TYPE_EXT)) {
+ (!hw_queue_prop->supports_sync_stream)) {
dev_err(hdev->dev, "Queue index %d is invalid\n", q_idx);
rc = -EINVAL;
goto free_cs_chunk_array;
@@ -858,7 +860,7 @@ static int cs_ioctl_signal_wait(struct hl_fpriv *hpriv, enum hl_cs_type cs_type,

*cs_seq = cs->sequence;

- job = hl_cs_allocate_job(hdev, QUEUE_TYPE_EXT, true);
+ job = hl_cs_allocate_job(hdev, q_type, true);
if (!job) {
dev_err(hdev->dev, "Failed to allocate a new job\n");
rc = -ENOMEM;
diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c
index 35e9080f6976..9ce032466243 100644
--- a/drivers/misc/habanalabs/gaudi/gaudi.c
+++ b/drivers/misc/habanalabs/gaudi/gaudi.c
@@ -345,10 +345,12 @@ static int gaudi_get_fixed_properties(struct hl_device *hdev)
prop->hw_queues_props[i].type = QUEUE_TYPE_EXT;
prop->hw_queues_props[i].driver_only = 0;
prop->hw_queues_props[i].requires_kernel_cb = 1;
+ prop->hw_queues_props[i].supports_sync_stream = 1;
} else if (gaudi_queue_type[i] == QUEUE_TYPE_CPU) {
prop->hw_queues_props[i].type = QUEUE_TYPE_CPU;
prop->hw_queues_props[i].driver_only = 1;
prop->hw_queues_props[i].requires_kernel_cb = 0;
+ prop->hw_queues_props[i].supports_sync_stream = 0;
} else if (gaudi_queue_type[i] == QUEUE_TYPE_INT) {
prop->hw_queues_props[i].type = QUEUE_TYPE_INT;
prop->hw_queues_props[i].driver_only = 0;
@@ -357,6 +359,7 @@ static int gaudi_get_fixed_properties(struct hl_device *hdev)
prop->hw_queues_props[i].type = QUEUE_TYPE_NA;
prop->hw_queues_props[i].driver_only = 0;
prop->hw_queues_props[i].requires_kernel_cb = 0;
+ prop->hw_queues_props[i].supports_sync_stream = 0;
}
}

@@ -364,7 +367,8 @@ static int gaudi_get_fixed_properties(struct hl_device *hdev)
prop->hw_queues_props[i].type = QUEUE_TYPE_NA;

prop->completion_queues_count = NUMBER_OF_CMPLT_QUEUES;
-
+ prop->sync_stream_first_sob = 0;
+ prop->sync_stream_first_mon = 0;
prop->dram_base_address = DRAM_PHYS_BASE;
prop->dram_size = GAUDI_HBM_SIZE_32GB;
prop->dram_end_address = prop->dram_base_address +
@@ -6263,44 +6267,6 @@ static u32 gaudi_get_queue_id_for_cq(struct hl_device *hdev, u32 cq_idx)
return gaudi_cq_assignment[cq_idx];
}

-static void gaudi_ext_queue_init(struct hl_device *hdev, u32 q_idx)
-{
- struct gaudi_device *gaudi = hdev->asic_specific;
- struct hl_hw_queue *hw_queue = &hdev->kernel_queues[q_idx];
- struct hl_hw_sob *hw_sob;
- int sob, ext_idx = gaudi->ext_queue_idx++;
-
- /*
- * The external queues might not sit sequentially, hence use the
- * real external queue index for the SOB/MON base id.
- */
- hw_queue->base_sob_id = ext_idx * HL_RSVD_SOBS;
- hw_queue->base_mon_id = ext_idx * HL_RSVD_MONS;
- hw_queue->next_sob_val = 1;
- hw_queue->curr_sob_offset = 0;
-
- for (sob = 0 ; sob < HL_RSVD_SOBS ; sob++) {
- hw_sob = &hw_queue->hw_sob[sob];
- hw_sob->hdev = hdev;
- hw_sob->sob_id = hw_queue->base_sob_id + sob;
- hw_sob->q_idx = q_idx;
- kref_init(&hw_sob->kref);
- }
-}
-
-static void gaudi_ext_queue_reset(struct hl_device *hdev, u32 q_idx)
-{
- struct hl_hw_queue *hw_queue = &hdev->kernel_queues[q_idx];
-
- /*
- * In case we got here due to a stuck CS, the refcnt might be bigger
- * than 1 and therefore we reset it.
- */
- kref_init(&hw_queue->hw_sob[hw_queue->curr_sob_offset].kref);
- hw_queue->curr_sob_offset = 0;
- hw_queue->next_sob_val = 1;
-}
-
static u32 gaudi_get_signal_cb_size(struct hl_device *hdev)
{
return sizeof(struct packet_msg_short) +
@@ -6603,8 +6569,6 @@ static const struct hl_asic_funcs gaudi_funcs = {
.read_device_fw_version = gaudi_read_device_fw_version,
.load_firmware_to_device = gaudi_load_firmware_to_device,
.load_boot_fit_to_device = gaudi_load_boot_fit_to_device,
- .ext_queue_init = gaudi_ext_queue_init,
- .ext_queue_reset = gaudi_ext_queue_reset,
.get_signal_cb_size = gaudi_get_signal_cb_size,
.get_wait_cb_size = gaudi_get_wait_cb_size,
.gen_signal_cb = gaudi_gen_signal_cb,
diff --git a/drivers/misc/habanalabs/gaudi/gaudiP.h b/drivers/misc/habanalabs/gaudi/gaudiP.h
index 76c3f840e05a..8c654711d543 100644
--- a/drivers/misc/habanalabs/gaudi/gaudiP.h
+++ b/drivers/misc/habanalabs/gaudi/gaudiP.h
@@ -234,7 +234,6 @@ struct gaudi_internal_qman_info {
* engine.
* @multi_msi_mode: whether we are working in multi MSI single MSI mode.
* Multi MSI is possible only with IOMMU enabled.
- * @ext_queue_idx: helper index for external queues initialization.
*/
struct gaudi_device {
int (*armcp_info_get)(struct hl_device *hdev);
@@ -253,7 +252,6 @@ struct gaudi_device {
u32 events_stat_aggregate[GAUDI_EVENT_SIZE];
u32 hw_cap_initialized;
u8 multi_msi_mode;
- u8 ext_queue_idx;
};

void gaudi_init_security(struct hl_device *hdev);
diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c
index e872099a3f7a..547fd766667a 100644
--- a/drivers/misc/habanalabs/goya/goya.c
+++ b/drivers/misc/habanalabs/goya/goya.c
@@ -5160,16 +5160,6 @@ u32 goya_get_queue_id_for_cq(struct hl_device *hdev, u32 cq_idx)
return cq_idx;
}

-static void goya_ext_queue_init(struct hl_device *hdev, u32 q_idx)
-{
-
-}
-
-static void goya_ext_queue_reset(struct hl_device *hdev, u32 q_idx)
-{
-
-}
-
static u32 goya_get_signal_cb_size(struct hl_device *hdev)
{
return 0;
@@ -5283,8 +5273,6 @@ static const struct hl_asic_funcs goya_funcs = {
.read_device_fw_version = goya_read_device_fw_version,
.load_firmware_to_device = goya_load_firmware_to_device,
.load_boot_fit_to_device = goya_load_boot_fit_to_device,
- .ext_queue_init = goya_ext_queue_init,
- .ext_queue_reset = goya_ext_queue_reset,
.get_signal_cb_size = goya_get_signal_cb_size,
.get_wait_cb_size = goya_get_wait_cb_size,
.gen_signal_cb = goya_gen_signal_cb,
diff --git a/drivers/misc/habanalabs/habanalabs.h b/drivers/misc/habanalabs/habanalabs.h
index 64d9b2dd3e19..8cd4b55d0608 100644
--- a/drivers/misc/habanalabs/habanalabs.h
+++ b/drivers/misc/habanalabs/habanalabs.h
@@ -50,6 +50,10 @@
/* MMU */
#define MMU_HASH_TABLE_BITS 7 /* 1 << 7 buckets */

+/*
+ * HL_RSVD_SOBS 'sync stream' reserved sync objects per QMAN stream
+ * HL_RSVD_MONS 'sync stream' reserved monitors per QMAN stream
+ */
#define HL_RSVD_SOBS 4
#define HL_RSVD_MONS 2

@@ -141,11 +145,13 @@ struct hl_hw_sob {
* false otherwise.
* @requires_kernel_cb: true if a CB handle must be provided for jobs on this
* queue, false otherwise (a CB address must be provided).
+ * @supports_sync_stream: True if queue supports sync stream
*/
struct hw_queue_properties {
enum hl_queue_type type;
u8 driver_only;
u8 requires_kernel_cb;
+ u8 supports_sync_stream;
};

/**
@@ -245,6 +251,9 @@ struct hl_mmu_properties {
* @cb_pool_cb_cnt: number of CBs in the CB pool.
* @cb_pool_cb_size: size of each CB in the CB pool.
* @tpc_enabled_mask: which TPCs are enabled.
+ * @sync_stream_first_sob: first sync object available for sync stream use
+ * @sync_stream_first_mon: first monitor available for sync stream use
+ * @tpc_enabled_mask: which TPCs are enabled.
* @completion_queues_count: number of completion queues.
*/
struct asic_fixed_properties {
@@ -286,6 +295,8 @@ struct asic_fixed_properties {
u32 cb_pool_cb_cnt;
u32 cb_pool_cb_size;
u32 max_pending_cs;
+ u16 sync_stream_first_sob;
+ u16 sync_stream_first_mon;
u8 tpc_enabled_mask;
u8 completion_queues_count;
};
@@ -423,6 +434,7 @@ struct hl_cs_job;
* exist).
* @curr_sob_offset: the id offset to the currently used SOB from the
* HL_RSVD_SOBS that are being used by this queue.
+ * @supports_sync_stream: True if queue supports sync stream
*/
struct hl_hw_queue {
struct hl_hw_sob hw_sob[HL_RSVD_SOBS];
@@ -441,6 +453,7 @@ struct hl_hw_queue {
u16 base_mon_id;
u8 valid;
u8 curr_sob_offset;
+ u8 supports_sync_stream;
};

/**
@@ -603,8 +616,6 @@ enum hl_pll_frequency {
* contained in registers
* @load_firmware_to_device: load the firmware to the device's memory
* @load_boot_fit_to_device: load boot fit to device's memory
- * @ext_queue_init: Initialize the given external queue.
- * @ext_queue_reset: Reset the given external queue.
* @get_signal_cb_size: Get signal CB size.
* @get_wait_cb_size: Get wait CB size.
* @gen_signal_cb: Generate a signal CB.
@@ -707,8 +718,6 @@ struct hl_asic_funcs {
enum hl_fw_component fwc);
int (*load_firmware_to_device)(struct hl_device *hdev);
int (*load_boot_fit_to_device)(struct hl_device *hdev);
- void (*ext_queue_init)(struct hl_device *hdev, u32 hw_queue_id);
- void (*ext_queue_reset)(struct hl_device *hdev, u32 hw_queue_id);
u32 (*get_signal_cb_size)(struct hl_device *hdev);
u32 (*get_wait_cb_size)(struct hl_device *hdev);
void (*gen_signal_cb)(struct hl_device *hdev, void *data, u16 sob_id);
@@ -1436,6 +1445,7 @@ struct hl_device_idle_busy_ts {
* @cdev_sysfs_created: were char devices and sysfs nodes created.
* @stop_on_err: true if engines should stop on error.
* @supports_sync_stream: is sync stream supported.
+ * @sync_stream_queue_idx: helper index for sync stream queues initialization.
* @supports_coresight: is CoreSight supported.
* @supports_soft_reset: is soft reset supported.
*/
@@ -1523,6 +1533,7 @@ struct hl_device {
u8 cdev_sysfs_created;
u8 stop_on_err;
u8 supports_sync_stream;
+ u8 sync_stream_queue_idx;
u8 supports_coresight;
u8 supports_soft_reset;

diff --git a/drivers/misc/habanalabs/hw_queue.c b/drivers/misc/habanalabs/hw_queue.c
index 29b96d24edc2..a8fa8021c617 100644
--- a/drivers/misc/habanalabs/hw_queue.c
+++ b/drivers/misc/habanalabs/hw_queue.c
@@ -663,9 +663,6 @@ static int ext_and_cpu_queue_init(struct hl_device *hdev, struct hl_hw_queue *q,
q->ci = 0;
q->pi = 0;

- if (!is_cpu_queue)
- hdev->asic_funcs->ext_queue_init(hdev, q->hw_queue_id);
-
return 0;

free_queue:
@@ -732,6 +729,42 @@ static int hw_queue_init(struct hl_device *hdev, struct hl_hw_queue *q)
return 0;
}

+static void sync_stream_queue_init(struct hl_device *hdev, u32 q_idx)
+{
+ struct hl_hw_queue *hw_queue = &hdev->kernel_queues[q_idx];
+ struct asic_fixed_properties *prop = &hdev->asic_prop;
+ struct hl_hw_sob *hw_sob;
+ int sob, queue_idx = hdev->sync_stream_queue_idx++;
+
+ hw_queue->base_sob_id =
+ prop->sync_stream_first_sob + queue_idx * HL_RSVD_SOBS;
+ hw_queue->base_mon_id =
+ prop->sync_stream_first_mon + queue_idx * HL_RSVD_MONS;
+ hw_queue->next_sob_val = 1;
+ hw_queue->curr_sob_offset = 0;
+
+ for (sob = 0 ; sob < HL_RSVD_SOBS ; sob++) {
+ hw_sob = &hw_queue->hw_sob[sob];
+ hw_sob->hdev = hdev;
+ hw_sob->sob_id = hw_queue->base_sob_id + sob;
+ hw_sob->q_idx = q_idx;
+ kref_init(&hw_sob->kref);
+ }
+}
+
+void sync_stream_queue_reset(struct hl_device *hdev, u32 q_idx)
+{
+ struct hl_hw_queue *hw_queue = &hdev->kernel_queues[q_idx];
+
+ /*
+ * In case we got here due to a stuck CS, the refcnt might be bigger
+ * than 1 and therefore we reset it.
+ */
+ kref_init(&hw_queue->hw_sob[hw_queue->curr_sob_offset].kref);
+ hw_queue->curr_sob_offset = 0;
+ hw_queue->next_sob_val = 1;
+}
+
/*
* queue_init - main initialization function for H/W queue object
*
@@ -774,6 +807,9 @@ static int queue_init(struct hl_device *hdev, struct hl_hw_queue *q,
break;
}

+ if (q->supports_sync_stream)
+ sync_stream_queue_init(hdev, q->hw_queue_id);
+
if (rc)
return rc;

@@ -848,6 +884,8 @@ int hl_hw_queues_create(struct hl_device *hdev)
i < HL_MAX_QUEUES ; i++, q_ready_cnt++, q++) {

q->queue_type = asic->hw_queues_props[i].type;
+ q->supports_sync_stream =
+ asic->hw_queues_props[i].supports_sync_stream;
rc = queue_init(hdev, q, i);
if (rc) {
dev_err(hdev->dev,
@@ -889,7 +927,7 @@ void hl_hw_queue_reset(struct hl_device *hdev, bool hard_reset)
continue;
q->pi = q->ci = 0;

- if (q->queue_type == QUEUE_TYPE_EXT)
- hdev->asic_funcs->ext_queue_reset(hdev, q->hw_queue_id);
+ if (q->supports_sync_stream)
+ sync_stream_queue_reset(hdev, q->hw_queue_id);
}
}
--
2.17.1

Next message: John Stultz: "[RFC][PATCH 0/5] Allow for qcom-pdc, pinctrl-msm and qcom-scm drivers to be loadable as modules"
Previous message: Oded Gabbay: "[PATCH 2/7] habanalabs: Use pending CS amount per ASIC"
In reply to: Oded Gabbay: "[PATCH 2/7] habanalabs: Use pending CS amount per ASIC"
Next in thread: Oded Gabbay: "[PATCH 7/7] habanalabs: calculate trace frequency from PLL"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]