Commit b78d5400 authored by Ariel Elior's avatar Ariel Elior Committed by David S. Miller

qed: Register light L2 queues with doorbell overflow recovery mechanism

Light L2 queues are doorbelling entities. Modify the implementation
to keep the doorbell data necessary for doorbelling in well known
location instead of recomputing every time. Register the LL2 queue
with doorbell recovery mechanism.
Signed-off-by: default avatarAriel Elior <Ariel.Elior@cavium.com>
Signed-off-by: default avatarMichal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: default avatarTomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9ecd8c3f
...@@ -1085,7 +1085,14 @@ static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn, ...@@ -1085,7 +1085,14 @@ static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn,
p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable; p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable;
return qed_spq_post(p_hwfn, p_ent, NULL); rc = qed_spq_post(p_hwfn, p_ent, NULL);
if (rc)
return rc;
rc = qed_db_recovery_add(p_hwfn->cdev, p_tx->doorbell_addr,
&p_tx->db_msg, DB_REC_WIDTH_32B,
DB_REC_KERNEL);
return rc;
} }
static int qed_sp_ll2_rx_queue_stop(struct qed_hwfn *p_hwfn, static int qed_sp_ll2_rx_queue_stop(struct qed_hwfn *p_hwfn,
...@@ -1119,9 +1126,11 @@ static int qed_sp_ll2_rx_queue_stop(struct qed_hwfn *p_hwfn, ...@@ -1119,9 +1126,11 @@ static int qed_sp_ll2_rx_queue_stop(struct qed_hwfn *p_hwfn,
static int qed_sp_ll2_tx_queue_stop(struct qed_hwfn *p_hwfn, static int qed_sp_ll2_tx_queue_stop(struct qed_hwfn *p_hwfn,
struct qed_ll2_info *p_ll2_conn) struct qed_ll2_info *p_ll2_conn)
{ {
struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue;
struct qed_spq_entry *p_ent = NULL; struct qed_spq_entry *p_ent = NULL;
struct qed_sp_init_data init_data; struct qed_sp_init_data init_data;
int rc = -EINVAL; int rc = -EINVAL;
qed_db_recovery_del(p_hwfn->cdev, p_tx->doorbell_addr, &p_tx->db_msg);
/* Get SPQ entry */ /* Get SPQ entry */
memset(&init_data, 0, sizeof(init_data)); memset(&init_data, 0, sizeof(init_data));
...@@ -1542,6 +1551,13 @@ int qed_ll2_establish_connection(void *cxt, u8 connection_handle) ...@@ -1542,6 +1551,13 @@ int qed_ll2_establish_connection(void *cxt, u8 connection_handle)
p_tx->doorbell_addr = (u8 __iomem *)p_hwfn->doorbells + p_tx->doorbell_addr = (u8 __iomem *)p_hwfn->doorbells +
qed_db_addr(p_ll2_conn->cid, qed_db_addr(p_ll2_conn->cid,
DQ_DEMS_LEGACY); DQ_DEMS_LEGACY);
/* prepare db data */
SET_FIELD(p_tx->db_msg.params, CORE_DB_DATA_DEST, DB_DEST_XCM);
SET_FIELD(p_tx->db_msg.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET);
SET_FIELD(p_tx->db_msg.params, CORE_DB_DATA_AGG_VAL_SEL,
DQ_XCM_CORE_TX_BD_PROD_CMD);
p_tx->db_msg.agg_flags = DQ_XCM_CORE_DQ_CF_CMD;
rc = qed_ll2_establish_connection_rx(p_hwfn, p_ll2_conn); rc = qed_ll2_establish_connection_rx(p_hwfn, p_ll2_conn);
if (rc) if (rc)
...@@ -1780,7 +1796,6 @@ static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn, ...@@ -1780,7 +1796,6 @@ static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn,
bool b_notify = p_ll2_conn->tx_queue.cur_send_packet->notify_fw; bool b_notify = p_ll2_conn->tx_queue.cur_send_packet->notify_fw;
struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue;
struct qed_ll2_tx_packet *p_pkt = NULL; struct qed_ll2_tx_packet *p_pkt = NULL;
struct core_db_data db_msg = { 0, 0, 0 };
u16 bd_prod; u16 bd_prod;
/* If there are missing BDs, don't do anything now */ /* If there are missing BDs, don't do anything now */
...@@ -1809,24 +1824,19 @@ static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn, ...@@ -1809,24 +1824,19 @@ static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn,
list_move_tail(&p_pkt->list_entry, &p_tx->active_descq); list_move_tail(&p_pkt->list_entry, &p_tx->active_descq);
} }
SET_FIELD(db_msg.params, CORE_DB_DATA_DEST, DB_DEST_XCM); p_tx->db_msg.spq_prod = cpu_to_le16(bd_prod);
SET_FIELD(db_msg.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET);
SET_FIELD(db_msg.params, CORE_DB_DATA_AGG_VAL_SEL,
DQ_XCM_CORE_TX_BD_PROD_CMD);
db_msg.agg_flags = DQ_XCM_CORE_DQ_CF_CMD;
db_msg.spq_prod = cpu_to_le16(bd_prod);
/* Make sure the BDs data is updated before ringing the doorbell */ /* Make sure the BDs data is updated before ringing the doorbell */
wmb(); wmb();
DIRECT_REG_WR(p_tx->doorbell_addr, *((u32 *)&db_msg)); DIRECT_REG_WR(p_tx->doorbell_addr, *((u32 *)&p_tx->db_msg));
DP_VERBOSE(p_hwfn, DP_VERBOSE(p_hwfn,
(NETIF_MSG_TX_QUEUED | QED_MSG_LL2), (NETIF_MSG_TX_QUEUED | QED_MSG_LL2),
"LL2 [q 0x%02x cid 0x%08x type 0x%08x] Doorbelled [producer 0x%04x]\n", "LL2 [q 0x%02x cid 0x%08x type 0x%08x] Doorbelled [producer 0x%04x]\n",
p_ll2_conn->queue_id, p_ll2_conn->queue_id,
p_ll2_conn->cid, p_ll2_conn->cid,
p_ll2_conn->input.conn_type, db_msg.spq_prod); p_ll2_conn->input.conn_type, p_tx->db_msg.spq_prod);
} }
int qed_ll2_prepare_tx_packet(void *cxt, int qed_ll2_prepare_tx_packet(void *cxt,
......
...@@ -103,6 +103,7 @@ struct qed_ll2_tx_queue { ...@@ -103,6 +103,7 @@ struct qed_ll2_tx_queue {
struct qed_ll2_tx_packet cur_completing_packet; struct qed_ll2_tx_packet cur_completing_packet;
u16 cur_completing_bd_idx; u16 cur_completing_bd_idx;
void __iomem *doorbell_addr; void __iomem *doorbell_addr;
struct core_db_data db_msg;
u16 bds_idx; u16 bds_idx;
u16 cur_send_frag_num; u16 cur_send_frag_num;
u16 cur_completing_frag_num; u16 cur_completing_frag_num;
......
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