cxgb4: Support firmware rdma write completion work request.

If FW supports RDMA WRITE_COMPLETION functionality, then advertise that
to the ULDs. This will be used by iw_cxgb4 to allow WRITE_COMPLETION
work requests.

Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
index 36110cf..688f954 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
@@ -391,6 +391,7 @@ struct adapter_params {
         */
        u8 mps_bg_map[MAX_NPORTS];      /* MPS Buffer Group Map */
        bool write_w_imm_support;       /* FW supports WRITE_WITH_IMMEDIATE */
+       bool write_cmpl_support;        /* FW supports WRITE_CMPL */
 };
 
 /* State needed to monitor the forward progress of SGE Ingress DMA activities

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index b31661c..99c9b88 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -4525,6 +4525,12 @@ static int adap_init0(struct adapter *adap)
                ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, params,
                                      val);
                adap->params.write_w_imm_support = (ret == 0 && val[0] != 0);
+
+               /* Enable write_cmpl if FW supports it */
+               params[0] = FW_PARAM_DEV(RI_WRITE_CMPL_WR);
+               ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, params,
+                                     val);
+               adap->params.write_cmpl_support = (ret == 0 && val[0] != 0);
                adap->num_ofld_uld += 2;
        }
        if (caps_cmd.iscsicaps) {

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c
index d8748e1..a95cde0 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c
@@ -667,6 +667,7 @@ static void uld_init(struct adapter *adap, struct cxgb4_lld_info *lld)
        lld->nodeid = dev_to_node(adap->pdev_dev);
        lld->fr_nsmr_tpte_wr_support = adap->params.fr_nsmr_tpte_wr_support;
        lld->write_w_imm_support = adap->params.write_w_imm_support;
+       lld->write_cmpl_support = adap->params.write_cmpl_support;
 }
 
 static void uld_attach(struct adapter *adap, unsigned int uld)

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
index fa01a5c..b0ca06e 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
@@ -355,6 +355,7 @@ struct cxgb4_lld_info {
        int nodeid;                          /* device numa node id */
        bool fr_nsmr_tpte_wr_support;        /* FW supports FR_NSMR_TPTE_WR */
        bool write_w_imm_support;         /* FW supports WRITE_WITH_IMMEDIATE */
+       bool write_cmpl_support;             /* FW supports WRITE_CMPL WR */
 };
 
 struct cxgb4_uld_info {

diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h b/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h
index ef7cb5c..544757f 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h
@@ -101,6 +101,7 @@ enum fw_wr_opcodes {
        FW_RI_BIND_MW_WR               = 0x18,
        FW_RI_FR_NSMR_WR               = 0x19,
        FW_RI_FR_NSMR_TPTE_WR          = 0x20,
+       FW_RI_RDMA_WRITE_CMPL_WR       = 0x21,
        FW_RI_INV_LSTAG_WR             = 0x1a,
        FW_ISCSI_TX_DATA_WR            = 0x45,
        FW_PTP_TX_PKT_WR               = 0x46,
@@ -1214,6 +1215,7 @@ enum fw_params_param_dev {
        FW_PARAMS_PARAM_DEV_MPSBGMAP    = 0x1E,
        FW_PARAMS_PARAM_DEV_HMA_SIZE    = 0x20,
        FW_PARAMS_PARAM_DEV_RDMA_WRITE_WITH_IMM = 0x21,
+       FW_PARAMS_PARAM_DEV_RI_WRITE_CMPL_WR    = 0x24,
 };
 
 /*