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cxgbe/iw_cxgbe: debug routines to dump STAG (steering tag) entries.

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t4_dump_stag to dump hw state for a known STAG.

t4_dump_all_stag to dump hw state for all valid STAGs.  This routine
walks the entire STAG region looking for valid entries and this can take
a while for some configurations.

MFC after:	1 week
Sponsored by:	Chelsio Communications
This commit is contained in:
Navdeep Parhar 2023-04-06 10:52:15 -07:00
parent 8cee0c9ae9
commit 7adf138ba9
2 changed files with 79 additions and 5 deletions
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82
sys/dev/cxgbe/iw_cxgbe/ev.c
View file

@ -41,6 +41,82 @@ __FBSDID("$FreeBSD$");
#include "iw_cxgbe.h"
static void print_tpte(struct adapter *sc, const u32 stag,
const struct fw_ri_tpte *tpte)
{
const __be64 *p = (const void *)tpte;
CH_ERR(sc, "stag idx 0x%x valid %d key 0x%x state %d pdid %d "
"perm 0x%x ps %d len 0x%016llx va 0x%016llx\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)),
(long long)(((u64)ntohl(tpte->len_hi) << 32) | ntohl(tpte->len_lo)),
(long long)(((u64)ntohl(tpte->va_hi) << 32) | ntohl(tpte->va_lo_fbo)));
CH_ERR(sc, "stag idx 0x%x: %016llx %016llx %016llx %016llx\n",
stag & 0xffffff00,
(long long)be64_to_cpu(p[0]), (long long)be64_to_cpu(p[1]),
(long long)be64_to_cpu(p[2]), (long long)be64_to_cpu(p[3]));
}
void t4_dump_stag(struct adapter *sc, const u32 stag)
{
struct fw_ri_tpte tpte __aligned(sizeof(__be64)) = {0};
const u32 offset = sc->vres.stag.start + ((stag >> 8) * 32);
if (offset > sc->vres.stag.start + sc->vres.stag.size - 32) {
CH_ERR(sc, "stag 0x%x is invalid for current configuration.\n",
stag);
return;
}
read_via_memwin(sc, 0, offset, (u32 *)&tpte, 32);
print_tpte(sc, stag, &tpte);
}
void t4_dump_all_stag(struct adapter *sc)
{
struct fw_ri_tpte tpte __aligned(sizeof(__be64)) = {0};
const u32 first = sc->vres.stag.start;
const u32 last = first + sc->vres.stag.size - 32;
u32 offset, i;
for (i = 0, offset = first; offset <= last; i++, offset += 32) {
tpte.valid_to_pdid = 0;
read_via_memwin(sc, 0, offset, (u32 *)&tpte, 4);
if (tpte.valid_to_pdid != 0) {
read_via_memwin(sc, 0, offset, (u32 *)&tpte, 32);
print_tpte(sc, i << 8, &tpte);
}
}
}
static void dump_err_cqe(struct c4iw_dev *dev, struct t4_cqe *err_cqe)
{
struct adapter *sc = dev->rdev.adap;
__be64 *p = (void *)err_cqe;
CH_ERR(sc, "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));
CH_ERR(sc, "%016llx %016llx %016llx %016llx\n",
(long long)be64_to_cpu(p[0]), (long long)be64_to_cpu(p[1]),
(long long)be64_to_cpu(p[2]), (long long)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))
t4_dump_stag(sc, 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,
@ -58,11 +134,7 @@ static void post_qp_event(struct c4iw_dev *dev, struct c4iw_cq *chp,
return;
}
printf("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;

2
sys/dev/cxgbe/iw_cxgbe/iw_cxgbe.h
View file

@ -982,4 +982,6 @@ u32 c4iw_get_qpid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx);
void c4iw_put_qpid(struct c4iw_rdev *rdev, u32 qid,
struct c4iw_dev_ucontext *uctx);
void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe);
void t4_dump_stag(struct adapter *sc, const u32 stag);
void t4_dump_all_stag(struct adapter *sc);
#endif