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cxgb4: Support firmware rdma write with immediate work request. 

If FW supports RDMA WRITE_WITH_IMMEDATE functionality, then advertise
that
to the ULDs. This will be used by iw_cxgb4 to allow WRITE_WITH_IMMEDIATE
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>
This commit is contained in:
Raju Rangoju 2018-03-20 15:41:41 +05:30 committed by David S. Miller
parent c68644ef16
commit 43db929640
5 changed files with 10 additions and 0 deletions
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1
drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
View File

@ -390,6 +390,7 @@ struct adapter_params {
* used by the Port
*/
u8 mps_bg_map[MAX_NPORTS]; /* MPS Buffer Group Map */
bool write_w_imm_support; /* FW supports WRITE_WITH_IMMEDIATE */
};
/* State needed to monitor the forward progress of SGE Ingress DMA activities

6
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
View File

@ -4519,6 +4519,12 @@ static int adap_init0(struct adapter *adap)
"max_ordird_qp %d max_ird_adapter %d\n",
adap->params.max_ordird_qp,
adap->params.max_ird_adapter);
/* Enable write_with_immediate if FW supports it */
params[0] = FW_PARAM_DEV(RDMA_WRITE_WITH_IMM);
ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, params,
val);
adap->params.write_w_imm_support = (ret == 0 && val[0] != 0);
adap->num_ofld_uld += 2;
}
if (caps_cmd.iscsicaps) {

1
drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c
View File

@ -666,6 +666,7 @@ static void uld_init(struct adapter *adap, struct cxgb4_lld_info *lld)
lld->ulptx_memwrite_dsgl = adap->params.ulptx_memwrite_dsgl;
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;
}
static void uld_attach(struct adapter *adap, unsigned int uld)

1
drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
View File

@ -354,6 +354,7 @@ struct cxgb4_lld_info {
void **iscsi_ppm; /* iscsi page pod manager */
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 */
};
struct cxgb4_uld_info {

1
drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h
View File

@ -1213,6 +1213,7 @@ enum fw_params_param_dev {
FW_PARAMS_PARAM_DEV_FILTER2_WR = 0x1D,
FW_PARAMS_PARAM_DEV_MPSBGMAP = 0x1E,
FW_PARAMS_PARAM_DEV_HMA_SIZE = 0x20,
FW_PARAMS_PARAM_DEV_RDMA_WRITE_WITH_IMM = 0x21,
};
/*