Merge branch 'bnxt_en-5-bug-fixes'

Michael Chan says:

====================
bnxt_en: 5 Bug fixes

This patchset fixes various issues, including SRIOV error unwinding,
one error recovery path, live patch reporting, XDP transmit path,
and PHC clock reading.
====================

Link: https://lore.kernel.org/r/1657592778-12730-1-git-send-email-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

6 files changed, 31 insertions, 13 deletions

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 56b46b8206a7..cf9b00576ed3 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -7790,7 +7790,7 @@ hwrm_dbg_qcaps_exit:
 
 static int bnxt_hwrm_queue_qportcfg(struct bnxt *bp);
 
-static int bnxt_hwrm_func_qcaps(struct bnxt *bp)
+int bnxt_hwrm_func_qcaps(struct bnxt *bp)
 {
 	int rc;
 
@@ -10065,7 +10065,8 @@ static int bnxt_hwrm_if_change(struct bnxt *bp, bool up)
 
 	if (flags & FUNC_DRV_IF_CHANGE_RESP_FLAGS_RESC_CHANGE)
 		resc_reinit = true;
-	if (flags & FUNC_DRV_IF_CHANGE_RESP_FLAGS_HOT_FW_RESET_DONE)
+	if (flags & FUNC_DRV_IF_CHANGE_RESP_FLAGS_HOT_FW_RESET_DONE ||
+	    test_bit(BNXT_STATE_FW_RESET_DET, &bp->state))
 		fw_reset = true;
 	else
 		bnxt_remap_fw_health_regs(bp);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index a1dca8c58f54..075c6206325c 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -2314,6 +2314,7 @@ int bnxt_cancel_reservations(struct bnxt *bp, bool fw_reset);
 int bnxt_hwrm_alloc_wol_fltr(struct bnxt *bp);
 int bnxt_hwrm_free_wol_fltr(struct bnxt *bp);
 int bnxt_hwrm_func_resc_qcaps(struct bnxt *bp, bool all);
+int bnxt_hwrm_func_qcaps(struct bnxt *bp);
 int bnxt_hwrm_fw_set_time(struct bnxt *);
 int bnxt_open_nic(struct bnxt *, bool, bool);
 int bnxt_half_open_nic(struct bnxt *bp);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
index 3528ce9849e6..6b3d4f4c2a75 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
@@ -979,9 +979,11 @@ static int bnxt_dl_info_get(struct devlink *dl, struct devlink_info_req *req,
 	if (rc)
 		return rc;
 
-	rc = bnxt_dl_livepatch_info_put(bp, req, BNXT_FW_SRT_PATCH);
-	if (rc)
-		return rc;
+	if (BNXT_CHIP_P5(bp)) {
+		rc = bnxt_dl_livepatch_info_put(bp, req, BNXT_FW_SRT_PATCH);
+		if (rc)
+			return rc;
+	}
 	return bnxt_dl_livepatch_info_put(bp, req, BNXT_FW_CRT_PATCH);
 
 }
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
index 562f8f68a47d..7f3c0875b6f5 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
@@ -76,14 +76,23 @@ static int bnxt_refclk_read(struct bnxt *bp, struct ptp_system_timestamp *sts,
 			    u64 *ns)
 {
 	struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
+	u32 high_before, high_now, low;
 
 	if (test_bit(BNXT_STATE_IN_FW_RESET, &bp->state))
 		return -EIO;
 
+	high_before = readl(bp->bar0 + ptp->refclk_mapped_regs[1]);
 	ptp_read_system_prets(sts);
-	*ns = readl(bp->bar0 + ptp->refclk_mapped_regs[0]);
+	low = readl(bp->bar0 + ptp->refclk_mapped_regs[0]);
 	ptp_read_system_postts(sts);
-	*ns |= (u64)readl(bp->bar0 + ptp->refclk_mapped_regs[1]) << 32;
+	high_now = readl(bp->bar0 + ptp->refclk_mapped_regs[1]);
+	if (high_now != high_before) {
+		ptp_read_system_prets(sts);
+		low = readl(bp->bar0 + ptp->refclk_mapped_regs[0]);
+		ptp_read_system_postts(sts);
+	}
+	*ns = ((u64)high_now << 32) | low;
+
 	return 0;
 }
 
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
index ddf2f3963abe..a1a2c7a64fd5 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
@@ -823,8 +823,10 @@ static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
 		goto err_out2;
 
 	rc = pci_enable_sriov(bp->pdev, *num_vfs);
-	if (rc)
+	if (rc) {
+		bnxt_ulp_sriov_cfg(bp, 0);
 		goto err_out2;
+	}
 
 	return 0;
 
@@ -832,6 +834,9 @@ err_out2:
 	/* Free the resources reserved for various VF's */
 	bnxt_hwrm_func_vf_resource_free(bp, *num_vfs);
 
+	/* Restore the max resources */
+	bnxt_hwrm_func_qcaps(bp);
+
 err_out1:
 	bnxt_free_vf_resources(bp);
 
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
index f02fe906dedb..f53387ed0167 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
@@ -28,7 +28,7 @@ struct bnxt_sw_tx_bd *bnxt_xmit_bd(struct bnxt *bp,
 				   struct xdp_buff *xdp)
 {
 	struct skb_shared_info *sinfo;
-	struct bnxt_sw_tx_bd *tx_buf, *first_buf;
+	struct bnxt_sw_tx_bd *tx_buf;
 	struct tx_bd *txbd;
 	int num_frags = 0;
 	u32 flags;
@@ -43,13 +43,14 @@ struct bnxt_sw_tx_bd *bnxt_xmit_bd(struct bnxt *bp,
 	/* fill up the first buffer */
 	prod = txr->tx_prod;
 	tx_buf = &txr->tx_buf_ring[prod];
-	first_buf = tx_buf;
 	tx_buf->nr_frags = num_frags;
 	if (xdp)
 		tx_buf->page = virt_to_head_page(xdp->data);
 
 	txbd = &txr->tx_desc_ring[TX_RING(prod)][TX_IDX(prod)];
-	flags = ((len) << TX_BD_LEN_SHIFT) | ((num_frags + 1) << TX_BD_FLAGS_BD_CNT_SHIFT);
+	flags = (len << TX_BD_LEN_SHIFT) |
+		((num_frags + 1) << TX_BD_FLAGS_BD_CNT_SHIFT) |
+		bnxt_lhint_arr[len >> 9];
 	txbd->tx_bd_len_flags_type = cpu_to_le32(flags);
 	txbd->tx_bd_opaque = prod;
 	txbd->tx_bd_haddr = cpu_to_le64(mapping);
@@ -82,7 +83,6 @@ struct bnxt_sw_tx_bd *bnxt_xmit_bd(struct bnxt *bp,
 
 		flags = frag_len << TX_BD_LEN_SHIFT;
 		txbd->tx_bd_len_flags_type = cpu_to_le32(flags);
-		txbd->tx_bd_opaque = prod;
 		txbd->tx_bd_haddr = cpu_to_le64(frag_mapping);
 
 		len = frag_len;
@@ -96,7 +96,7 @@ struct bnxt_sw_tx_bd *bnxt_xmit_bd(struct bnxt *bp,
 	prod = NEXT_TX(prod);
 	txr->tx_prod = prod;
 
-	return first_buf;
+	return tx_buf;
 }
 
 static void __bnxt_xmit_xdp(struct bnxt *bp, struct bnxt_tx_ring_info *txr,