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cxgb4/iw_cxgb4: display TPTE on errors

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With ingress WRITE or READ RESPONSE errors, HW provides the offending
stag from the packet.  This patch adds logic to log the parsed TPTE
in this case. cxgb4 now exports a function to read a TPTE entry
from adapter memory.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hariprasad Shenai
2014-07-14 21:34:53 +05:30
committed by David S. Miller
parent 4c2c576322
commit 031cf4769b
5 changed files with 143 additions and 11 deletions
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55
drivers/infiniband/hw/cxgb4/ev.c
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@@ -35,6 +35,55 @@
#include "iw_cxgb4.h"
static void print_tpte(struct c4iw_dev *dev, u32 stag)
{
int ret;
struct fw_ri_tpte tpte;
ret = cxgb4_read_tpte(dev->rdev.lldi.ports[0], stag,
(__be32 *)&tpte);
if (ret) {
dev_err(&dev->rdev.lldi.pdev->dev,
"%s cxgb4_read_tpte err %d\n", __func__, ret);
return;
}
PDBG("stag idx 0x%x valid %d key 0x%x state %d pdid %d "
"perm 0x%x ps %d len 0x%llx va 0x%llx\n",
stag & 0xffffff00,
G_FW_RI_TPTE_VALID(ntohl(tpte.valid_to_pdid)),
G_FW_RI_TPTE_STAGKEY(ntohl(tpte.valid_to_pdid)),
G_FW_RI_TPTE_STAGSTATE(ntohl(tpte.valid_to_pdid)),
G_FW_RI_TPTE_PDID(ntohl(tpte.valid_to_pdid)),
G_FW_RI_TPTE_PERM(ntohl(tpte.locread_to_qpid)),
G_FW_RI_TPTE_PS(ntohl(tpte.locread_to_qpid)),
((u64)ntohl(tpte.len_hi) << 32) | ntohl(tpte.len_lo),
((u64)ntohl(tpte.va_hi) << 32) | ntohl(tpte.va_lo_fbo));
}
static void dump_err_cqe(struct c4iw_dev *dev, struct t4_cqe *err_cqe)
{
__be64 *p = (void *)err_cqe;
dev_err(&dev->rdev.lldi.pdev->dev,
"AE qpid %d opcode %d status 0x%x "
"type %d len 0x%x wrid.hi 0x%x wrid.lo 0x%x\n",
CQE_QPID(err_cqe), CQE_OPCODE(err_cqe),
CQE_STATUS(err_cqe), CQE_TYPE(err_cqe), ntohl(err_cqe->len),
CQE_WRID_HI(err_cqe), CQE_WRID_LOW(err_cqe));
PDBG("%016llx %016llx %016llx %016llx\n",
be64_to_cpu(p[0]), be64_to_cpu(p[1]), be64_to_cpu(p[2]),
be64_to_cpu(p[3]));
/*
* Ingress WRITE and READ_RESP errors provide
* the offending stag, so parse and log it.
*/
if (RQ_TYPE(err_cqe) && (CQE_OPCODE(err_cqe) == FW_RI_RDMA_WRITE ||
CQE_OPCODE(err_cqe) == FW_RI_READ_RESP))
print_tpte(dev, CQE_WRID_STAG(err_cqe));
}
static void post_qp_event(struct c4iw_dev *dev, struct c4iw_cq *chp,
struct c4iw_qp *qhp,
struct t4_cqe *err_cqe,
@@ -44,11 +93,7 @@ static void post_qp_event(struct c4iw_dev *dev, struct c4iw_cq *chp,
struct c4iw_qp_attributes attrs;
unsigned long flag;
printk(KERN_ERR MOD "AE qpid 0x%x opcode %d status 0x%x "
"type %d wrid.hi 0x%x wrid.lo 0x%x\n",
CQE_QPID(err_cqe), CQE_OPCODE(err_cqe),
CQE_STATUS(err_cqe), CQE_TYPE(err_cqe),
CQE_WRID_HI(err_cqe), CQE_WRID_LOW(err_cqe));
dump_err_cqe(dev, err_cqe);
if (qhp->attr.state == C4IW_QP_STATE_RTS) {
attrs.next_state = C4IW_QP_STATE_TERMINATE;