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IB/ipath: Improve handling and reporting of parity errors 

Mostly cleanup.

Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Bryan O'Sullivan 2007-03-15 14:45:07 -07:00 committed by Roland Dreier
parent 820054b7ca
commit 9783ab4058
8 changed files with 170 additions and 86 deletions
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3
drivers/infiniband/hw/ipath/ipath_driver.c
View File

@ -605,8 +605,9 @@ static void __devexit cleanup_device(struct ipath_devdata *dd)
ipath_cdbg(VERBOSE, "Free shadow page tid array at %p\n",
dd->ipath_pageshadow);
vfree(dd->ipath_pageshadow);
tmpp = dd->ipath_pageshadow;
dd->ipath_pageshadow = NULL;
vfree(tmpp);
}
/*

4
drivers/infiniband/hw/ipath/ipath_eeprom.c
View File

@ -626,6 +626,10 @@ void ipath_get_eeprom_info(struct ipath_devdata *dd)
} else
memcpy(dd->ipath_serial, ifp->if_serial,
sizeof ifp->if_serial);
if (!strstr(ifp->if_comment, "Tested successfully"))
ipath_dev_err(dd, "Board SN %s did not pass functional "
"test: %s\n", dd->ipath_serial,
ifp->if_comment);
ipath_cdbg(VERBOSE, "Initted GUID to %llx from eeprom\n",
(unsigned long long) be64_to_cpu(dd->ipath_guid));

138
drivers/infiniband/hw/ipath/ipath_iba6110.c
View File

@ -284,6 +284,14 @@ static const struct ipath_cregs ipath_ht_cregs = {
#define INFINIPATH_EXTS_MEMBIST_ENDTEST 0x0000000000004000
#define INFINIPATH_EXTS_MEMBIST_CORRECT 0x0000000000008000
/* TID entries (memory), HT-only */
#define INFINIPATH_RT_ADDR_MASK 0xFFFFFFFFFFULL /* 40 bits valid */
#define INFINIPATH_RT_VALID 0x8000000000000000ULL
#define INFINIPATH_RT_ADDR_SHIFT 0
#define INFINIPATH_RT_BUFSIZE_MASK 0x3FFFULL
#define INFINIPATH_RT_BUFSIZE_SHIFT 48
/*
* masks and bits that are different in different chips, or present only
* in one
@ -402,6 +410,14 @@ static const struct ipath_hwerror_msgs ipath_6110_hwerror_msgs[] = {
INFINIPATH_HWE_MSG(SERDESPLLFAILED, "SerDes PLL"),
};
#define TXE_PIO_PARITY ((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF | \
INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC) \
<< INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT)
#define RXE_EAGER_PARITY (INFINIPATH_HWE_RXEMEMPARITYERR_EAGERTID \
<< INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT)
static int ipath_ht_txe_recover(struct ipath_devdata *);
/**
* ipath_ht_handle_hwerrors - display hardware errors.
* @dd: the infinipath device
@ -450,13 +466,12 @@ static void ipath_ht_handle_hwerrors(struct ipath_devdata *dd, char *msg,
/*
* make sure we get this much out, unless told to be quiet,
* it's a parity error we may recover from,
* or it's occurred within the last 5 seconds
*/
if ((hwerrs & ~(dd->ipath_lasthwerror |
((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF |
INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC)
<< INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT))) ||
(ipath_debug & __IPATH_VERBDBG))
if ((hwerrs & ~(dd->ipath_lasthwerror | TXE_PIO_PARITY |
RXE_EAGER_PARITY)) ||
(ipath_debug & __IPATH_VERBDBG))
dev_info(&dd->pcidev->dev, "Hardware error: hwerr=0x%llx "
"(cleared)\n", (unsigned long long) hwerrs);
dd->ipath_lasthwerror |= hwerrs;
@ -467,7 +482,7 @@ static void ipath_ht_handle_hwerrors(struct ipath_devdata *dd, char *msg,
(hwerrs & ~dd->ipath_hwe_bitsextant));
ctrl = ipath_read_kreg32(dd, dd->ipath_kregs->kr_control);
if (ctrl & INFINIPATH_C_FREEZEMODE) {
if ((ctrl & INFINIPATH_C_FREEZEMODE) && !ipath_diag_inuse) {
/*
* parity errors in send memory are recoverable,
* just cancel the send (if indicated in * sendbuffererror),
@ -476,50 +491,14 @@ static void ipath_ht_handle_hwerrors(struct ipath_devdata *dd, char *msg,
* occur if a processor speculative read is done to the PIO
* buffer while we are sending a packet, for example.
*/
if (hwerrs & ((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF |
INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC)
<< INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT)) {
ipath_stats.sps_txeparity++;
ipath_dbg("Recovering from TXE parity error (%llu), "
"hwerrstatus=%llx\n",
(unsigned long long) ipath_stats.sps_txeparity,
(unsigned long long) hwerrs);
ipath_disarm_senderrbufs(dd);
hwerrs &= ~((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF |
INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC)
<< INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT);
if (!hwerrs) { /* else leave in freeze mode */
ipath_write_kreg(dd,
dd->ipath_kregs->kr_control,
dd->ipath_control);
return;
}
}
if (hwerrs) {
/*
* if any set that we aren't ignoring; only
* make the complaint once, in case it's stuck
* or recurring, and we get here multiple
* times.
*/
if (dd->ipath_flags & IPATH_INITTED) {
ipath_dev_err(dd, "Fatal Hardware Error (freeze "
"mode), no longer usable, SN %.16s\n",
dd->ipath_serial);
isfatal = 1;
}
*dd->ipath_statusp &= ~IPATH_STATUS_IB_READY;
/* mark as having had error */
*dd->ipath_statusp |= IPATH_STATUS_HWERROR;
/*
* mark as not usable, at a minimum until driver
* is reloaded, probably until reboot, since no
* other reset is possible.
*/
dd->ipath_flags &= ~IPATH_INITTED;
} else {
ipath_dbg("Clearing freezemode on ignored hardware "
"error\n");
if ((hwerrs & TXE_PIO_PARITY) && ipath_ht_txe_recover(dd))
hwerrs &= ~TXE_PIO_PARITY;
if (hwerrs & RXE_EAGER_PARITY)
ipath_dev_err(dd, "RXE parity, Eager TID error is not "
"recoverable\n");
if (!hwerrs) {
ipath_dbg("Clearing freezemode on ignored or "
"recovered hardware error\n");
ctrl &= ~INFINIPATH_C_FREEZEMODE;
ipath_write_kreg(dd, dd->ipath_kregs->kr_control,
ctrl);
@ -587,7 +566,32 @@ static void ipath_ht_handle_hwerrors(struct ipath_devdata *dd, char *msg,
dd->ipath_hwerrmask);
}
ipath_dev_err(dd, "%s hardware error\n", msg);
if (hwerrs) {
/*
* if any set that we aren't ignoring; only
* make the complaint once, in case it's stuck
* or recurring, and we get here multiple
* times.
*/
ipath_dev_err(dd, "%s hardware error\n", msg);
if (dd->ipath_flags & IPATH_INITTED) {
ipath_dev_err(dd, "Fatal Hardware Error (freeze "
"mode), no longer usable, SN %.16s\n",
dd->ipath_serial);
isfatal = 1;
}
*dd->ipath_statusp &= ~IPATH_STATUS_IB_READY;
/* mark as having had error */
*dd->ipath_statusp |= IPATH_STATUS_HWERROR;
/*
* mark as not usable, at a minimum until driver
* is reloaded, probably until reboot, since no
* other reset is possible.
*/
dd->ipath_flags &= ~IPATH_INITTED;
}
else
*msg = 0; /* recovered from all of them */
if (isfatal && !ipath_diag_inuse && dd->ipath_freezemsg)
/*
* for status file; if no trailing brace is copied,
@ -658,7 +662,8 @@ static int ipath_ht_boardname(struct ipath_devdata *dd, char *name,
if (n)
snprintf(name, namelen, "%s", n);
if (dd->ipath_majrev != 3 || (dd->ipath_minrev < 2 || dd->ipath_minrev > 3)) {
if (dd->ipath_majrev != 3 || (dd->ipath_minrev < 2 ||
dd->ipath_minrev > 3)) {
/*
* This version of the driver only supports Rev 3.2 and 3.3
*/
@ -1163,6 +1168,8 @@ static void ipath_ht_init_hwerrors(struct ipath_devdata *dd)
if (!(extsval & INFINIPATH_EXTS_MEMBIST_ENDTEST))
ipath_dev_err(dd, "MemBIST did not complete!\n");
if (extsval & INFINIPATH_EXTS_MEMBIST_CORRECT)
ipath_dbg("MemBIST corrected\n");
ipath_check_htlink(dd);
@ -1366,6 +1373,9 @@ static void ipath_ht_put_tid(struct ipath_devdata *dd,
u64 __iomem *tidptr, u32 type,
unsigned long pa)
{
if (!dd->ipath_kregbase)
return;
if (pa != dd->ipath_tidinvalid) {
if (unlikely((pa & ~INFINIPATH_RT_ADDR_MASK))) {
dev_info(&dd->pcidev->dev,
@ -1382,10 +1392,10 @@ static void ipath_ht_put_tid(struct ipath_devdata *dd,
pa |= lenvalid | INFINIPATH_RT_VALID;
}
}
if (dd->ipath_kregbase)
writeq(pa, tidptr);
writeq(pa, tidptr);
}
/**
* ipath_ht_clear_tid - clear all TID entries for a port, expected and eager
* @dd: the infinipath device
@ -1515,7 +1525,7 @@ static int ipath_ht_early_init(struct ipath_devdata *dd)
INFINIPATH_S_ABORT);
ipath_get_eeprom_info(dd);
if(dd->ipath_boardrev == 5 && dd->ipath_serial[0] == '1' &&
if (dd->ipath_boardrev == 5 && dd->ipath_serial[0] == '1' &&
dd->ipath_serial[1] == '2' && dd->ipath_serial[2] == '8') {
/*
* Later production QHT7040 has same changes as QHT7140, so
@ -1528,6 +1538,24 @@ static int ipath_ht_early_init(struct ipath_devdata *dd)
return 0;
}
static int ipath_ht_txe_recover(struct ipath_devdata *dd)
{
int cnt = ++ipath_stats.sps_txeparity;
if (cnt >= IPATH_MAX_PARITY_ATTEMPTS) {
if (cnt == IPATH_MAX_PARITY_ATTEMPTS)
ipath_dev_err(dd,
"Too many attempts to recover from "
"TXE parity, giving up\n");
return 0;
}
dev_info(&dd->pcidev->dev,
"Recovering from TXE PIO parity error\n");
ipath_disarm_senderrbufs(dd, 1);
return 1;
}
/**
* ipath_init_ht_get_base_info - set chip-specific flags for user code
* @dd: the infinipath device

58
drivers/infiniband/hw/ipath/ipath_iba6120.c
View File

@ -321,6 +321,12 @@ static const struct ipath_hwerror_msgs ipath_6120_hwerror_msgs[] = {
INFINIPATH_HWE_MSG(SERDESPLLFAILED, "SerDes PLL"),
};
#define TXE_PIO_PARITY ((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF | \
INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC) \
<< INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT)
static int ipath_pe_txe_recover(struct ipath_devdata *);
/**
* ipath_pe_handle_hwerrors - display hardware errors.
* @dd: the infinipath device
@ -394,25 +400,8 @@ static void ipath_pe_handle_hwerrors(struct ipath_devdata *dd, char *msg,
* occur if a processor speculative read is done to the PIO
* buffer while we are sending a packet, for example.
*/
if (hwerrs & ((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF |
INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC)
<< INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT)) {
ipath_stats.sps_txeparity++;
ipath_dbg("Recovering from TXE parity error (%llu), "
"hwerrstatus=%llx\n",
(unsigned long long) ipath_stats.sps_txeparity,
(unsigned long long) hwerrs);
ipath_disarm_senderrbufs(dd);
hwerrs &= ~((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF |
INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC)
<< INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT);
if (!hwerrs) { /* else leave in freeze mode */
ipath_write_kreg(dd,
dd->ipath_kregs->kr_control,
dd->ipath_control);
return;
}
}
if ((hwerrs & TXE_PIO_PARITY) && ipath_pe_txe_recover(dd))
hwerrs &= ~TXE_PIO_PARITY;
if (hwerrs) {
/*
* if any set that we aren't ignoring only make the
@ -581,6 +570,8 @@ static void ipath_pe_init_hwerrors(struct ipath_devdata *dd)
if (!(extsval & INFINIPATH_EXTS_MEMBIST_ENDTEST))
ipath_dev_err(dd, "MemBIST did not complete!\n");
if (extsval & INFINIPATH_EXTS_MEMBIST_FOUND)
ipath_dbg("MemBIST corrected\n");
val = ~0ULL; /* barring bugs, all hwerrors become interrupts, */
@ -1330,6 +1321,35 @@ static void ipath_pe_free_irq(struct ipath_devdata *dd)
dd->ipath_irq = 0;
}
/*
* On platforms using this chip, and not having ordered WC stores, we
* can get TXE parity errors due to speculative reads to the PIO buffers,
* and this, due to a chip bug can result in (many) false parity error
* reports. So it's a debug print on those, and an info print on systems
* where the speculative reads don't occur.
* Because we can get lots of false errors, we have no upper limit
* on recovery attempts on those platforms.
*/
static int ipath_pe_txe_recover(struct ipath_devdata *dd)
{
if (ipath_unordered_wc())
ipath_dbg("Recovering from TXE PIO parity error\n");
else {
int cnt = ++ipath_stats.sps_txeparity;
if (cnt >= IPATH_MAX_PARITY_ATTEMPTS) {
if (cnt == IPATH_MAX_PARITY_ATTEMPTS)
ipath_dev_err(dd,
"Too many attempts to recover from "
"TXE parity, giving up\n");
return 0;
}
dev_info(&dd->pcidev->dev,
"Recovering from TXE PIO parity error\n");
}
ipath_disarm_senderrbufs(dd, 1);
return 1;
}
/**
* ipath_init_iba6120_funcs - set up the chip-specific function pointers
* @dd: the infinipath device

4
drivers/infiniband/hw/ipath/ipath_init_chip.c
View File

@ -590,6 +590,10 @@ static int init_housekeeping(struct ipath_devdata *dd,
goto done;
}
/* clear diagctrl register, in case diags were running and crashed */
ipath_write_kreg (dd, dd->ipath_kregs->kr_hwdiagctrl, 0);
/* clear the initial reset flag, in case first driver load */
ipath_write_kreg(dd, dd->ipath_kregs->kr_errorclear,
INFINIPATH_E_RESET);

38
drivers/infiniband/hw/ipath/ipath_intr.c
View File

@ -37,11 +37,40 @@
#include "ipath_verbs.h"
#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)) {
/*

4
drivers/infiniband/hw/ipath/ipath_kernel.h
View File

@ -590,7 +590,6 @@ int ipath_enable_wc(struct ipath_devdata *dd);
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, const struct file_operations *fops,
@ -713,6 +712,7 @@ void ipath_init_iba6120_funcs(struct ipath_devdata *);
void ipath_init_iba6110_funcs(struct ipath_devdata *);
void ipath_get_eeprom_info(struct ipath_devdata *);
u64 ipath_snap_cntr(struct ipath_devdata *, ipath_creg);
void ipath_disarm_senderrbufs(struct ipath_devdata *, int);
/*
* number of words used for protocol header if not set by ipath_userinit();
@ -897,6 +897,8 @@ dma_addr_t ipath_map_single(struct pci_dev *, void *, size_t, int);
extern unsigned ipath_debug; /* debugging bit mask */
#define IPATH_MAX_PARITY_ATTEMPTS 10000 /* max times to try recovery */
const char *ipath_get_unit_name(int unit);
extern struct mutex ipath_mutex;

7
drivers/infiniband/hw/ipath/ipath_registers.h
View File

@ -308,13 +308,6 @@
#define INFINIPATH_XGXS_RX_POL_SHIFT 19
#define INFINIPATH_XGXS_RX_POL_MASK 0xfULL
#define INFINIPATH_RT_ADDR_MASK 0xFFFFFFFFFFULL /* 40 bits valid */
/* TID entries (memory), HT-only */
#define INFINIPATH_RT_VALID 0x8000000000000000ULL
#define INFINIPATH_RT_ADDR_SHIFT 0
#define INFINIPATH_RT_BUFSIZE_MASK 0x3FFF
#define INFINIPATH_RT_BUFSIZE_SHIFT 48
/*
* IPATH_PIO_MAXIBHDR is the max IB header size allowed for in our