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path: root/drivers/net/ethernet/microsoft/mana/hw_channel.c
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Diffstat (limited to 'drivers/net/ethernet/microsoft/mana/hw_channel.c')
-rw-r--r--drivers/net/ethernet/microsoft/mana/hw_channel.c75
1 files changed, 33 insertions, 42 deletions
diff --git a/drivers/net/ethernet/microsoft/mana/hw_channel.c b/drivers/net/ethernet/microsoft/mana/hw_channel.c
index d5c485a6d284..34b971ff8ef8 100644
--- a/drivers/net/ethernet/microsoft/mana/hw_channel.c
+++ b/drivers/net/ethernet/microsoft/mana/hw_channel.c
@@ -309,9 +309,6 @@ static void mana_hwc_comp_event(void *ctx, struct gdma_queue *q_self)
static void mana_hwc_destroy_cq(struct gdma_context *gc, struct hwc_cq *hwc_cq)
{
- if (!hwc_cq)
- return;
-
kfree(hwc_cq->comp_buf);
if (hwc_cq->gdma_cq)
@@ -363,7 +360,7 @@ static int mana_hwc_create_cq(struct hw_channel_context *hwc, u16 q_depth,
}
hwc_cq->gdma_cq = cq;
- comp_buf = kcalloc(q_depth, sizeof(struct gdma_comp), GFP_KERNEL);
+ comp_buf = kcalloc(q_depth, sizeof(*comp_buf), GFP_KERNEL);
if (!comp_buf) {
err = -ENOMEM;
goto out;
@@ -446,9 +443,6 @@ static void mana_hwc_dealloc_dma_buf(struct hw_channel_context *hwc,
static void mana_hwc_destroy_wq(struct hw_channel_context *hwc,
struct hwc_wq *hwc_wq)
{
- if (!hwc_wq)
- return;
-
mana_hwc_dealloc_dma_buf(hwc, hwc_wq->msg_buf);
if (hwc_wq->gdma_wq)
@@ -580,7 +574,7 @@ static int mana_hwc_test_channel(struct hw_channel_context *hwc, u16 q_depth,
return err;
}
- ctx = kzalloc(q_depth * sizeof(struct hwc_caller_ctx), GFP_KERNEL);
+ ctx = kcalloc(q_depth, sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
@@ -621,6 +615,7 @@ static int mana_hwc_establish_channel(struct gdma_context *gc, u16 *q_depth,
*max_req_msg_size = hwc->hwc_init_max_req_msg_size;
*max_resp_msg_size = hwc->hwc_init_max_resp_msg_size;
+ /* Both were set in mana_hwc_init_event_handler(). */
if (WARN_ON(cq->id >= gc->max_num_cqs))
return -EPROTO;
@@ -636,9 +631,6 @@ static int mana_hwc_establish_channel(struct gdma_context *gc, u16 *q_depth,
static int mana_hwc_init_queues(struct hw_channel_context *hwc, u16 q_depth,
u32 max_req_msg_size, u32 max_resp_msg_size)
{
- struct hwc_wq *hwc_rxq = NULL;
- struct hwc_wq *hwc_txq = NULL;
- struct hwc_cq *hwc_cq = NULL;
int err;
err = mana_hwc_init_inflight_msg(hwc, q_depth);
@@ -651,44 +643,32 @@ static int mana_hwc_init_queues(struct hw_channel_context *hwc, u16 q_depth,
err = mana_hwc_create_cq(hwc, q_depth * 2,
mana_hwc_init_event_handler, hwc,
mana_hwc_rx_event_handler, hwc,
- mana_hwc_tx_event_handler, hwc, &hwc_cq);
+ mana_hwc_tx_event_handler, hwc, &hwc->cq);
if (err) {
dev_err(hwc->dev, "Failed to create HWC CQ: %d\n", err);
goto out;
}
- hwc->cq = hwc_cq;
err = mana_hwc_create_wq(hwc, GDMA_RQ, q_depth, max_req_msg_size,
- hwc_cq, &hwc_rxq);
+ hwc->cq, &hwc->rxq);
if (err) {
dev_err(hwc->dev, "Failed to create HWC RQ: %d\n", err);
goto out;
}
- hwc->rxq = hwc_rxq;
err = mana_hwc_create_wq(hwc, GDMA_SQ, q_depth, max_resp_msg_size,
- hwc_cq, &hwc_txq);
+ hwc->cq, &hwc->txq);
if (err) {
dev_err(hwc->dev, "Failed to create HWC SQ: %d\n", err);
goto out;
}
- hwc->txq = hwc_txq;
hwc->num_inflight_msg = q_depth;
hwc->max_req_msg_size = max_req_msg_size;
return 0;
out:
- if (hwc_txq)
- mana_hwc_destroy_wq(hwc, hwc_txq);
-
- if (hwc_rxq)
- mana_hwc_destroy_wq(hwc, hwc_rxq);
-
- if (hwc_cq)
- mana_hwc_destroy_cq(hwc->gdma_dev->gdma_context, hwc_cq);
-
- mana_gd_free_res_map(&hwc->inflight_msg_res);
+ /* mana_hwc_create_channel() will do the cleanup.*/
return err;
}
@@ -716,6 +696,9 @@ int mana_hwc_create_channel(struct gdma_context *gc)
gd->pdid = INVALID_PDID;
gd->doorbell = INVALID_DOORBELL;
+ /* mana_hwc_init_queues() only creates the required data structures,
+ * and doesn't touch the HWC device.
+ */
err = mana_hwc_init_queues(hwc, HW_CHANNEL_VF_BOOTSTRAP_QUEUE_DEPTH,
HW_CHANNEL_MAX_REQUEST_SIZE,
HW_CHANNEL_MAX_RESPONSE_SIZE);
@@ -741,42 +724,50 @@ int mana_hwc_create_channel(struct gdma_context *gc)
return 0;
out:
- kfree(hwc);
+ mana_hwc_destroy_channel(gc);
return err;
}
void mana_hwc_destroy_channel(struct gdma_context *gc)
{
struct hw_channel_context *hwc = gc->hwc.driver_data;
- struct hwc_caller_ctx *ctx;
- mana_smc_teardown_hwc(&gc->shm_channel, false);
+ if (!hwc)
+ return;
+
+ /* gc->max_num_cqs is set in mana_hwc_init_event_handler(). If it's
+ * non-zero, the HWC worked and we should tear down the HWC here.
+ */
+ if (gc->max_num_cqs > 0) {
+ mana_smc_teardown_hwc(&gc->shm_channel, false);
+ gc->max_num_cqs = 0;
+ }
- ctx = hwc->caller_ctx;
- kfree(ctx);
+ kfree(hwc->caller_ctx);
hwc->caller_ctx = NULL;
- mana_hwc_destroy_wq(hwc, hwc->txq);
- hwc->txq = NULL;
+ if (hwc->txq)
+ mana_hwc_destroy_wq(hwc, hwc->txq);
- mana_hwc_destroy_wq(hwc, hwc->rxq);
- hwc->rxq = NULL;
+ if (hwc->rxq)
+ mana_hwc_destroy_wq(hwc, hwc->rxq);
- mana_hwc_destroy_cq(hwc->gdma_dev->gdma_context, hwc->cq);
- hwc->cq = NULL;
+ if (hwc->cq)
+ mana_hwc_destroy_cq(hwc->gdma_dev->gdma_context, hwc->cq);
mana_gd_free_res_map(&hwc->inflight_msg_res);
hwc->num_inflight_msg = 0;
- if (hwc->gdma_dev->pdid != INVALID_PDID) {
- hwc->gdma_dev->doorbell = INVALID_DOORBELL;
- hwc->gdma_dev->pdid = INVALID_PDID;
- }
+ hwc->gdma_dev->doorbell = INVALID_DOORBELL;
+ hwc->gdma_dev->pdid = INVALID_PDID;
kfree(hwc);
gc->hwc.driver_data = NULL;
gc->hwc.gdma_context = NULL;
+
+ vfree(gc->cq_table);
+ gc->cq_table = NULL;
}
int mana_hwc_send_request(struct hw_channel_context *hwc, u32 req_len,