IB/ipath: Fix and recover TXE piobuf and PBC parity errors
We can sometimes trigger parity errors due to processor speculative
reads to our write-combined memory (mostly seen on Woodcrest). Add a
stats counter for these.
Factored out the sendbuffererror buffer cancellation code so it can be
used in the new handling; suppress likely subsequent error messages if
within two jiffies of the cancellation.
Also restore 2 dropped TXE lines on hwe_bitsextant noticed while
debugging.
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/hw/ipath/ipath_kernel.h b/drivers/infiniband/hw/ipath/ipath_kernel.h
index 02134cb..d7540b7 100644
--- a/drivers/infiniband/hw/ipath/ipath_kernel.h
+++ b/drivers/infiniband/hw/ipath/ipath_kernel.h
@@ -427,6 +427,9 @@
unsigned long ipath_rcvctrl;
/* shadow kr_sendctrl */
unsigned long ipath_sendctrl;
+ /* ports waiting for PIOavail intr */
+ unsigned long ipath_portpiowait;
+ unsigned long ipath_lastcancel; /* to not count armlaunch after cancel */
/* value we put in kr_rcvhdrcnt */
u32 ipath_rcvhdrcnt;
@@ -490,8 +493,6 @@
u32 ipath_htwidth;
/* HT speed (200,400,800,1000) from HT config */
u32 ipath_htspeed;
- /* ports waiting for PIOavail intr */
- unsigned long ipath_portpiowait;
/*
* number of sequential ibcstatus change for polling active/quiet
* (i.e., link not coming up).
@@ -585,6 +586,7 @@
void ipath_disable_wc(struct ipath_devdata *dd);
int ipath_count_units(int *npresentp, int *nupp, u32 *maxportsp);
void ipath_shutdown_device(struct ipath_devdata *);
+void ipath_disarm_senderrbufs(struct ipath_devdata *);
struct file_operations;
int ipath_cdev_init(int minor, char *name, struct file_operations *fops,