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authorKaike Wan <kaike.wan@intel.com>2017-08-13 08:09:04 -0700
committerDoug Ledford <dledford@redhat.com>2017-08-22 14:22:38 -0400
commitbf808b5039c66f9843cdc30f18c0608dbbf11374 (patch)
treea2042398e872c88e6335635d6deb2415fac42e40
parent6165467921a891bc79675cdb7f2791d8331f592c (diff)
IB/hfi1: Add kernel receive context info to debugfs
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Kaike Wan <kaike.wan@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
-rw-r--r--drivers/infiniband/hw/hfi1/debugfs.c47
-rw-r--r--drivers/infiniband/hw/hfi1/driver.c59
-rw-r--r--drivers/infiniband/hw/hfi1/hfi.h1
3 files changed, 107 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/debugfs.c b/drivers/infiniband/hw/hfi1/debugfs.c
index 550119c6f1ee..c6a472f01025 100644
--- a/drivers/infiniband/hw/hfi1/debugfs.c
+++ b/drivers/infiniband/hw/hfi1/debugfs.c
@@ -368,6 +368,52 @@ DEBUGFS_SEQ_FILE_OPS(sdes);
DEBUGFS_SEQ_FILE_OPEN(sdes)
DEBUGFS_FILE_OPS(sdes);
+static void *_rcds_seq_start(struct seq_file *s, loff_t *pos)
+{
+ struct hfi1_ibdev *ibd;
+ struct hfi1_devdata *dd;
+
+ ibd = (struct hfi1_ibdev *)s->private;
+ dd = dd_from_dev(ibd);
+ if (!dd->rcd || *pos >= dd->n_krcv_queues)
+ return NULL;
+ return pos;
+}
+
+static void *_rcds_seq_next(struct seq_file *s, void *v, loff_t *pos)
+{
+ struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
+ struct hfi1_devdata *dd = dd_from_dev(ibd);
+
+ ++*pos;
+ if (!dd->rcd || *pos >= dd->n_krcv_queues)
+ return NULL;
+ return pos;
+}
+
+static void _rcds_seq_stop(struct seq_file *s, void *v)
+{
+}
+
+static int _rcds_seq_show(struct seq_file *s, void *v)
+{
+ struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
+ struct hfi1_devdata *dd = dd_from_dev(ibd);
+ struct hfi1_ctxtdata *rcd;
+ loff_t *spos = v;
+ loff_t i = *spos;
+
+ rcd = hfi1_rcd_get_by_index(dd, i);
+ if (rcd)
+ seqfile_dump_rcd(s, rcd);
+ hfi1_rcd_put(rcd);
+ return 0;
+}
+
+DEBUGFS_SEQ_FILE_OPS(rcds);
+DEBUGFS_SEQ_FILE_OPEN(rcds)
+DEBUGFS_FILE_OPS(rcds);
+
/* read the per-device counters */
static ssize_t dev_counters_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
@@ -1321,6 +1367,7 @@ void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd)
DEBUGFS_SEQ_FILE_CREATE(ctx_stats, ibd->hfi1_ibdev_dbg, ibd);
DEBUGFS_SEQ_FILE_CREATE(qp_stats, ibd->hfi1_ibdev_dbg, ibd);
DEBUGFS_SEQ_FILE_CREATE(sdes, ibd->hfi1_ibdev_dbg, ibd);
+ DEBUGFS_SEQ_FILE_CREATE(rcds, ibd->hfi1_ibdev_dbg, ibd);
DEBUGFS_SEQ_FILE_CREATE(sdma_cpu_list, ibd->hfi1_ibdev_dbg, ibd);
/* dev counter files */
for (i = 0; i < ARRAY_SIZE(cntr_ops); i++)
diff --git a/drivers/infiniband/hw/hfi1/driver.c b/drivers/infiniband/hw/hfi1/driver.c
index fc7085d6cf3f..7372cc00cb2d 100644
--- a/drivers/infiniband/hw/hfi1/driver.c
+++ b/drivers/infiniband/hw/hfi1/driver.c
@@ -1689,3 +1689,62 @@ int process_receive_invalid(struct hfi1_packet *packet)
rhf_rcv_type(packet->rhf));
return RHF_RCV_CONTINUE;
}
+
+void seqfile_dump_rcd(struct seq_file *s, struct hfi1_ctxtdata *rcd)
+{
+ struct hfi1_packet packet;
+ struct ps_mdata mdata;
+
+ seq_printf(s, "Rcd %u: RcvHdr cnt %u entsize %u %s head %llu tail %llu\n",
+ rcd->ctxt, rcd->rcvhdrq_cnt, rcd->rcvhdrqentsize,
+ HFI1_CAP_KGET_MASK(rcd->flags, DMA_RTAIL) ?
+ "dma_rtail" : "nodma_rtail",
+ read_uctxt_csr(rcd->dd, rcd->ctxt, RCV_HDR_HEAD) &
+ RCV_HDR_HEAD_HEAD_MASK,
+ read_uctxt_csr(rcd->dd, rcd->ctxt, RCV_HDR_TAIL));
+
+ init_packet(rcd, &packet);
+ init_ps_mdata(&mdata, &packet);
+
+ while (1) {
+ struct hfi1_devdata *dd = rcd->dd;
+ __le32 *rhf_addr = (__le32 *)rcd->rcvhdrq + mdata.ps_head +
+ dd->rhf_offset;
+ struct ib_header *hdr;
+ u64 rhf = rhf_to_cpu(rhf_addr);
+ u32 etype = rhf_rcv_type(rhf), qpn;
+ u8 opcode;
+ u32 psn;
+ u8 lnh;
+
+ if (ps_done(&mdata, rhf, rcd))
+ break;
+
+ if (ps_skip(&mdata, rhf, rcd))
+ goto next;
+
+ if (etype > RHF_RCV_TYPE_IB)
+ goto next;
+
+ packet.hdr = hfi1_get_msgheader(dd, rhf_addr);
+ hdr = packet.hdr;
+
+ lnh = be16_to_cpu(hdr->lrh[0]) & 3;
+
+ if (lnh == HFI1_LRH_BTH)
+ packet.ohdr = &hdr->u.oth;
+ else if (lnh == HFI1_LRH_GRH)
+ packet.ohdr = &hdr->u.l.oth;
+ else
+ goto next; /* just in case */
+
+ opcode = (be32_to_cpu(packet.ohdr->bth[0]) >> 24);
+ qpn = be32_to_cpu(packet.ohdr->bth[1]) & RVT_QPN_MASK;
+ psn = mask_psn(be32_to_cpu(packet.ohdr->bth[2]));
+
+ seq_printf(s, "\tEnt %u: opcode 0x%x, qpn 0x%x, psn 0x%x\n",
+ mdata.ps_head, opcode, qpn, psn);
+next:
+ update_ps_mdata(&mdata, rcd);
+ }
+}
diff --git a/drivers/infiniband/hw/hfi1/hfi.h b/drivers/infiniband/hw/hfi1/hfi.h
index b15749eab921..eadb735d958c 100644
--- a/drivers/infiniband/hw/hfi1/hfi.h
+++ b/drivers/infiniband/hw/hfi1/hfi.h
@@ -1987,6 +1987,7 @@ int process_receive_error(struct hfi1_packet *packet);
int kdeth_process_expected(struct hfi1_packet *packet);
int kdeth_process_eager(struct hfi1_packet *packet);
int process_receive_invalid(struct hfi1_packet *packet);
+void seqfile_dump_rcd(struct seq_file *s, struct hfi1_ctxtdata *rcd);
/* global module parameter variables */
extern unsigned int hfi1_max_mtu;

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