diff options
| author | Hariprasad Shenai <hariprasad@chelsio.com> | 2014-07-14 21:34:53 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-07-15 16:25:16 -0700 |
| commit | 031cf4769bc4504d046074274d1ecd70d89d20b8 (patch) | |
| tree | 9fc2ee18f4ee2cf26c365e4e3083ed8994c105e7 /drivers/infiniband/hw/cxgb4/device.c | |
| parent | 4c2c5763227a14ce111d6f35df708459d2443cc3 (diff) | |
| download | linux-031cf4769bc4504d046074274d1ecd70d89d20b8.tar.gz | |
cxgb4/iw_cxgb4: display TPTE on errors
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>
Diffstat (limited to 'drivers/infiniband/hw/cxgb4/device.c')
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/device.c | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c index e76358efcaa1..8386678f1159 100644 --- a/drivers/infiniband/hw/cxgb4/device.c +++ b/drivers/infiniband/hw/cxgb4/device.c @@ -241,12 +241,32 @@ static int dump_stag(int id, void *p, void *data) struct c4iw_debugfs_data *stagd = data; int space; int cc; + struct fw_ri_tpte tpte; + int ret; space = stagd->bufsize - stagd->pos - 1; if (space == 0) return 1; - cc = snprintf(stagd->buf + stagd->pos, space, "0x%x\n", id<<8); + ret = cxgb4_read_tpte(stagd->devp->rdev.lldi.ports[0], (u32)id<<8, + (__be32 *)&tpte); + if (ret) { + dev_err(&stagd->devp->rdev.lldi.pdev->dev, + "%s cxgb4_read_tpte err %d\n", __func__, ret); + return ret; + } + cc = snprintf(stagd->buf + stagd->pos, space, + "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", + (u32)id<<8, + 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)); if (cc < space) stagd->pos += cc; return 0; @@ -259,7 +279,7 @@ static int stag_release(struct inode *inode, struct file *file) printk(KERN_INFO "%s null stagd?\n", __func__); return 0; } - kfree(stagd->buf); + vfree(stagd->buf); kfree(stagd); return 0; } @@ -282,8 +302,8 @@ static int stag_open(struct inode *inode, struct file *file) idr_for_each(&stagd->devp->mmidr, count_idrs, &count); spin_unlock_irq(&stagd->devp->lock); - stagd->bufsize = count * sizeof("0x12345678\n"); - stagd->buf = kmalloc(stagd->bufsize, GFP_KERNEL); + stagd->bufsize = count * 256; + stagd->buf = vmalloc(stagd->bufsize); if (!stagd->buf) { ret = -ENOMEM; goto err1; |