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path: root/drivers/infiniband/hw/ipath/ipath_intr.c
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Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_intr.c')
-rw-r--r--drivers/infiniband/hw/ipath/ipath_intr.c100
1 files changed, 77 insertions, 23 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_intr.c b/drivers/infiniband/hw/ipath/ipath_intr.c
index 72b9e279d19..45d033169c6 100644
--- a/drivers/infiniband/hw/ipath/ipath_intr.c
+++ b/drivers/infiniband/hw/ipath/ipath_intr.c
@@ -38,10 +38,39 @@
#include "ipath_common.h"
/*
+ * clear (write) a pio buffer, to clear a parity error. This routine
+ * should only be called when in freeze mode, and the buffer should be
+ * canceled afterwards.
+ */
+static void ipath_clrpiobuf(struct ipath_devdata *dd, u32 pnum)
+{
+ u32 __iomem *pbuf;
+ u32 dwcnt; /* dword count to write */
+ if (pnum < dd->ipath_piobcnt2k) {
+ pbuf = (u32 __iomem *) (dd->ipath_pio2kbase + pnum *
+ dd->ipath_palign);
+ dwcnt = dd->ipath_piosize2k >> 2;
+ }
+ else {
+ pbuf = (u32 __iomem *) (dd->ipath_pio4kbase +
+ (pnum - dd->ipath_piobcnt2k) * dd->ipath_4kalign);
+ dwcnt = dd->ipath_piosize4k >> 2;
+ }
+ dev_info(&dd->pcidev->dev,
+ "Rewrite PIO buffer %u, to recover from parity error\n",
+ pnum);
+ *pbuf = dwcnt+1; /* no flush required, since already in freeze */
+ while(--dwcnt)
+ *pbuf++ = 0;
+}
+
+/*
* Called when we might have an error that is specific to a particular
* PIO buffer, and may need to cancel that buffer, so it can be re-used.
+ * If rewrite is true, and bits are set in the sendbufferror registers,
+ * we'll write to the buffer, for error recovery on parity errors.
*/
-void ipath_disarm_senderrbufs(struct ipath_devdata *dd)
+void ipath_disarm_senderrbufs(struct ipath_devdata *dd, int rewrite)
{
u32 piobcnt;
unsigned long sbuf[4];
@@ -74,8 +103,11 @@ void ipath_disarm_senderrbufs(struct ipath_devdata *dd)
}
for (i = 0; i < piobcnt; i++)
- if (test_bit(i, sbuf))
+ if (test_bit(i, sbuf)) {
+ if (rewrite)
+ ipath_clrpiobuf(dd, i);
ipath_disarm_piobufs(dd, i, 1);
+ }
dd->ipath_lastcancel = jiffies+3; /* no armlaunch for a bit */
}
}
@@ -114,7 +146,7 @@ static u64 handle_e_sum_errs(struct ipath_devdata *dd, ipath_err_t errs)
{
u64 ignore_this_time = 0;
- ipath_disarm_senderrbufs(dd);
+ ipath_disarm_senderrbufs(dd, 0);
if ((errs & E_SUM_LINK_PKTERRS) &&
!(dd->ipath_flags & IPATH_LINKACTIVE)) {
/*
@@ -403,10 +435,13 @@ static void handle_supp_msgs(struct ipath_devdata *dd,
* happens so often we never want to count it.
*/
if (dd->ipath_lasterror & ~INFINIPATH_E_IBSTATUSCHANGED) {
- ipath_decode_err(msg, sizeof msg, dd->ipath_lasterror &
- ~INFINIPATH_E_IBSTATUSCHANGED);
+ int iserr;
+ iserr = ipath_decode_err(msg, sizeof msg,
+ dd->ipath_lasterror &
+ ~INFINIPATH_E_IBSTATUSCHANGED);
if (dd->ipath_lasterror &
- ~(INFINIPATH_E_RRCVEGRFULL | INFINIPATH_E_RRCVHDRFULL))
+ ~(INFINIPATH_E_RRCVEGRFULL |
+ INFINIPATH_E_RRCVHDRFULL | INFINIPATH_E_PKTERRS))
ipath_dev_err(dd, "Suppressed %u messages for "
"fast-repeating errors (%s) (%llx)\n",
supp_msgs, msg,
@@ -420,8 +455,13 @@ static void handle_supp_msgs(struct ipath_devdata *dd,
* them. So only complain about these at debug
* level.
*/
- ipath_dbg("Suppressed %u messages for %s\n",
- supp_msgs, msg);
+ if (iserr)
+ ipath_dbg("Suppressed %u messages for %s\n",
+ supp_msgs, msg);
+ else
+ ipath_cdbg(ERRPKT,
+ "Suppressed %u messages for %s\n",
+ supp_msgs, msg);
}
}
}
@@ -462,7 +502,7 @@ static int handle_errors(struct ipath_devdata *dd, ipath_err_t errs)
{
char msg[512];
u64 ignore_this_time = 0;
- int i;
+ int i, iserr = 0;
int chkerrpkts = 0, noprint = 0;
unsigned supp_msgs;
@@ -502,6 +542,7 @@ static int handle_errors(struct ipath_devdata *dd, ipath_err_t errs)
}
if (supp_msgs == 250000) {
+ int s_iserr;
/*
* It's not entirely reasonable assuming that the errors set
* in the last clear period are all responsible for the
@@ -511,17 +552,17 @@ static int handle_errors(struct ipath_devdata *dd, ipath_err_t errs)
dd->ipath_maskederrs |= dd->ipath_lasterror | errs;
ipath_write_kreg(dd, dd->ipath_kregs->kr_errormask,
~dd->ipath_maskederrs);
- ipath_decode_err(msg, sizeof msg,
+ s_iserr = ipath_decode_err(msg, sizeof msg,
(dd->ipath_maskederrs & ~dd->
ipath_ignorederrs));
if ((dd->ipath_maskederrs & ~dd->ipath_ignorederrs) &
- ~(INFINIPATH_E_RRCVEGRFULL | INFINIPATH_E_RRCVHDRFULL))
- ipath_dev_err(dd, "Disabling error(s) %llx because "
- "occurring too frequently (%s)\n",
- (unsigned long long)
- (dd->ipath_maskederrs &
- ~dd->ipath_ignorederrs), msg);
+ ~(INFINIPATH_E_RRCVEGRFULL |
+ INFINIPATH_E_RRCVHDRFULL | INFINIPATH_E_PKTERRS))
+ ipath_dev_err(dd, "Temporarily disabling "
+ "error(s) %llx reporting; too frequent (%s)\n",
+ (unsigned long long) (dd->ipath_maskederrs &
+ ~dd->ipath_ignorederrs), msg);
else {
/*
* rcvegrfull and rcvhdrqfull are "normal",
@@ -530,8 +571,15 @@ static int handle_errors(struct ipath_devdata *dd, ipath_err_t errs)
* processing them. So only complain about
* these at debug level.
*/
- ipath_dbg("Disabling frequent queue full errors "
- "(%s)\n", msg);
+ if (s_iserr)
+ ipath_dbg("Temporarily disabling reporting "
+ "too frequent queue full errors (%s)\n",
+ msg);
+ else
+ ipath_cdbg(ERRPKT,
+ "Temporarily disabling reporting too"
+ " frequent packet errors (%s)\n",
+ msg);
}
/*
@@ -589,6 +637,8 @@ static int handle_errors(struct ipath_devdata *dd, ipath_err_t errs)
ipath_stats.sps_crcerrs++;
chkerrpkts = 1;
}
+ iserr = errs & ~(E_SUM_PKTERRS | INFINIPATH_E_PKTERRS);
+
/*
* We don't want to print these two as they happen, or we can make
@@ -677,8 +727,13 @@ static int handle_errors(struct ipath_devdata *dd, ipath_err_t errs)
*dd->ipath_statusp &= ~IPATH_STATUS_IB_CONF;
}
- if (!noprint && *msg)
- ipath_dev_err(dd, "%s error\n", msg);
+ if (!noprint && *msg) {
+ if (iserr)
+ ipath_dev_err(dd, "%s error\n", msg);
+ else
+ dev_info(&dd->pcidev->dev, "%s packet problems\n",
+ msg);
+ }
if (dd->ipath_state_wanted & dd->ipath_flags) {
ipath_cdbg(VERBOSE, "driver wanted state %x, iflags now %x, "
"waking\n", dd->ipath_state_wanted,
@@ -819,11 +874,10 @@ static void handle_urcv(struct ipath_devdata *dd, u32 istat)
struct ipath_portdata *pd = dd->ipath_pd[i];
if (portr & (1 << i) && pd && pd->port_cnt &&
test_bit(IPATH_PORT_WAITING_RCV, &pd->port_flag)) {
- int rcbit;
clear_bit(IPATH_PORT_WAITING_RCV,
&pd->port_flag);
- rcbit = i + INFINIPATH_R_INTRAVAIL_SHIFT;
- clear_bit(1UL << rcbit, &dd->ipath_rcvctrl);
+ clear_bit(i + INFINIPATH_R_INTRAVAIL_SHIFT,
+ &dd->ipath_rcvctrl);
wake_up_interruptible(&pd->port_wait);
rcvdint = 1;
}