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bng_en: Handle an HWRM completion request

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Since the HWRM completion for a sent request lands on the NQ,
add functions to handle the HWRM completion event.

Signed-off-by: Bhargava Marreddy <bhargava.marreddy@broadcom.com>
Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Rajashekar Hudumula <rajashekar.hudumula@broadcom.com>
Link: https://patch.msgid.link/20260128185623.26559-4-bhargava.marreddy@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Bhargava Marreddy
2026-01-29 00:26:18 +05:30
committed by Jakub Kicinski
parent 4d6a60057c
commit 23cfc4e8e1
3 changed files with 45 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
View File

@@ -2305,8 +2305,7 @@ static int bnge_open(struct net_device *dev)
static int bnge_shutdown_nic(struct bnge_net *bn)
{
/* TODO: close_path = 0 until we make NAPI functional */
bnge_hwrm_resource_free(bn, 0);
bnge_hwrm_resource_free(bn, 1);
return 0;
}

1
drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
View File

@@ -77,6 +77,7 @@ struct tx_cmp {
#define CMPL_BASE_TYPE_HWRM_FWD_REQ 0x22UL
#define CMPL_BASE_TYPE_HWRM_FWD_RESP 0x24UL
#define CMPL_BASE_TYPE_HWRM_ASYNC_EVENT 0x2eUL
#define CMPL_BA_TY_HWRM_ASY_EVT CMPL_BASE_TYPE_HWRM_ASYNC_EVENT
#define TX_CMP_FLAGS_ERROR (1 << 6)
#define TX_CMP_FLAGS_PUSH (1 << 7)
u32 tx_cmp_opaque;

44
drivers/net/ethernet/broadcom/bnge/bnge_txrx.c
View File

@@ -383,6 +383,43 @@ static void __bnge_poll_work_done(struct bnge_net *bn, struct bnge_napi *bnapi,
}
}
static void
bnge_hwrm_update_token(struct bnge_dev *bd, u16 seq_id,
enum bnge_hwrm_wait_state state)
{
struct bnge_hwrm_wait_token *token;
rcu_read_lock();
hlist_for_each_entry_rcu(token, &bd->hwrm_pending_list, node) {
if (token->seq_id == seq_id) {
WRITE_ONCE(token->state, state);
rcu_read_unlock();
return;
}
}
rcu_read_unlock();
dev_err(bd->dev, "Invalid hwrm seq id %d\n", seq_id);
}
static int bnge_hwrm_handler(struct bnge_dev *bd, struct tx_cmp *txcmp)
{
struct hwrm_cmpl *h_cmpl = (struct hwrm_cmpl *)txcmp;
u16 cmpl_type = TX_CMP_TYPE(txcmp), seq_id;
switch (cmpl_type) {
case CMPL_BASE_TYPE_HWRM_DONE:
seq_id = le16_to_cpu(h_cmpl->sequence_id);
bnge_hwrm_update_token(bd, seq_id, BNGE_HWRM_COMPLETE);
break;
case CMPL_BASE_TYPE_HWRM_ASYNC_EVENT:
default:
break;
}
return 0;
}
static int __bnge_poll_work(struct bnge_net *bn, struct bnge_cp_ring_info *cpr,
int budget)
{
@@ -433,8 +470,11 @@ static int __bnge_poll_work(struct bnge_net *bn, struct bnge_cp_ring_info *cpr,
rx_pkts++;
else if (rc == -EBUSY) /* partial completion */
break;
} else if (unlikely(cmp_type == CMPL_BASE_TYPE_HWRM_DONE ||
cmp_type == CMPL_BASE_TYPE_HWRM_FWD_REQ ||
cmp_type == CMPL_BA_TY_HWRM_ASY_EVT)) {
bnge_hwrm_handler(bn->bd, txcmp);
}
raw_cons = NEXT_RAW_CMP(raw_cons);
if (rx_pkts && rx_pkts == budget) {
@@ -552,6 +592,8 @@ int bnge_napi_poll(struct napi_struct *napi, int budget)
work_done += __bnge_poll_work(bn, cpr,
budget - work_done);
nqr->has_more_work |= cpr->has_more_work;
} else {
bnge_hwrm_handler(bn->bd, (struct tx_cmp *)nqcmp);
}
raw_cons = NEXT_RAW_CMP(raw_cons);
}