4.9-stable review patch. If anyone has any objections, please let me know.
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From: Michael Chan michael.chan@broadcom.com
[ Upstream commit 486b5c22ea1d35e00e90dd79a32a9ee530b18915 ]
With the added support for the bnxt_re RDMA driver, both drivers can be allocating completion rings in any order. The firmware does not know which completion ring should be receiving async events. Add an extra step to tell firmware the completion ring number for receiving async events after bnxt_en allocates the completion rings.
Signed-off-by: Michael Chan michael.chan@broadcom.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -3800,6 +3800,30 @@ static int hwrm_ring_alloc_send_msg(stru return rc; }
+static int bnxt_hwrm_set_async_event_cr(struct bnxt *bp, int idx) +{ + int rc; + + if (BNXT_PF(bp)) { + struct hwrm_func_cfg_input req = {0}; + + bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1); + req.fid = cpu_to_le16(0xffff); + req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_ASYNC_EVENT_CR); + req.async_event_cr = cpu_to_le16(idx); + rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT); + } else { + struct hwrm_func_vf_cfg_input req = {0}; + + bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_CFG, -1, -1); + req.enables = + cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_ASYNC_EVENT_CR); + req.async_event_cr = cpu_to_le16(idx); + rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT); + } + return rc; +} + static int bnxt_hwrm_ring_alloc(struct bnxt *bp) { int i, rc = 0; @@ -3816,6 +3840,12 @@ static int bnxt_hwrm_ring_alloc(struct b goto err_out; BNXT_CP_DB(cpr->cp_doorbell, cpr->cp_raw_cons); bp->grp_info[i].cp_fw_ring_id = ring->fw_ring_id; + + if (!i) { + rc = bnxt_hwrm_set_async_event_cr(bp, ring->fw_ring_id); + if (rc) + netdev_warn(bp->dev, "Failed to set async event completion ring.\n"); + } }
for (i = 0; i < bp->tx_nr_rings; i++) {