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linux_dsm_epyc7002/drivers/infiniband/hw/ipath/ipath_ht400.c
Bryan O'Sullivan 7cd658cd2b [PATCH] IB/ipath: removed redundant statements 
The tail register read became redundant as the result of earlier receive
interrupt bug fixes.

Drop another unneeded register read.

And another line that got duplicated.

Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Cc: "Michael S. Tsirkin" <mst@mellanox.co.il>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-01 09:56:00 -07:00

1604 lines
51 KiB
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/*
* Copyright (c) 2006 QLogic, Inc. All rights reserved.
* Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/*
* This file contains all of the code that is specific to the InfiniPath
* HT-400 chip.
*/
#include <linux/pci.h>
#include <linux/delay.h>
#include "ipath_kernel.h"
#include "ipath_registers.h"
/*
* This lists the InfiniPath HT400 registers, in the actual chip layout.
* This structure should never be directly accessed.
*
* The names are in InterCap form because they're taken straight from
* the chip specification. Since they're only used in this file, they
* don't pollute the rest of the source.
*/
struct _infinipath_do_not_use_kernel_regs {
unsigned long long Revision;
unsigned long long Control;
unsigned long long PageAlign;
unsigned long long PortCnt;
unsigned long long DebugPortSelect;
unsigned long long DebugPort;
unsigned long long SendRegBase;
unsigned long long UserRegBase;
unsigned long long CounterRegBase;
unsigned long long Scratch;
unsigned long long ReservedMisc1;
unsigned long long InterruptConfig;
unsigned long long IntBlocked;
unsigned long long IntMask;
unsigned long long IntStatus;
unsigned long long IntClear;
unsigned long long ErrorMask;
unsigned long long ErrorStatus;
unsigned long long ErrorClear;
unsigned long long HwErrMask;
unsigned long long HwErrStatus;
unsigned long long HwErrClear;
unsigned long long HwDiagCtrl;
unsigned long long MDIO;
unsigned long long IBCStatus;
unsigned long long IBCCtrl;
unsigned long long ExtStatus;
unsigned long long ExtCtrl;
unsigned long long GPIOOut;
unsigned long long GPIOMask;
unsigned long long GPIOStatus;
unsigned long long GPIOClear;
unsigned long long RcvCtrl;
unsigned long long RcvBTHQP;
unsigned long long RcvHdrSize;
unsigned long long RcvHdrCnt;
unsigned long long RcvHdrEntSize;
unsigned long long RcvTIDBase;
unsigned long long RcvTIDCnt;
unsigned long long RcvEgrBase;
unsigned long long RcvEgrCnt;
unsigned long long RcvBufBase;
unsigned long long RcvBufSize;
unsigned long long RxIntMemBase;
unsigned long long RxIntMemSize;
unsigned long long RcvPartitionKey;
unsigned long long ReservedRcv[10];
unsigned long long SendCtrl;
unsigned long long SendPIOBufBase;
unsigned long long SendPIOSize;
unsigned long long SendPIOBufCnt;
unsigned long long SendPIOAvailAddr;
unsigned long long TxIntMemBase;
unsigned long long TxIntMemSize;
unsigned long long ReservedSend[9];
unsigned long long SendBufferError;
unsigned long long SendBufferErrorCONT1;
unsigned long long SendBufferErrorCONT2;
unsigned long long SendBufferErrorCONT3;
unsigned long long ReservedSBE[4];
unsigned long long RcvHdrAddr0;
unsigned long long RcvHdrAddr1;
unsigned long long RcvHdrAddr2;
unsigned long long RcvHdrAddr3;
unsigned long long RcvHdrAddr4;
unsigned long long RcvHdrAddr5;
unsigned long long RcvHdrAddr6;
unsigned long long RcvHdrAddr7;
unsigned long long RcvHdrAddr8;
unsigned long long ReservedRHA[7];
unsigned long long RcvHdrTailAddr0;
unsigned long long RcvHdrTailAddr1;
unsigned long long RcvHdrTailAddr2;
unsigned long long RcvHdrTailAddr3;
unsigned long long RcvHdrTailAddr4;
unsigned long long RcvHdrTailAddr5;
unsigned long long RcvHdrTailAddr6;
unsigned long long RcvHdrTailAddr7;
unsigned long long RcvHdrTailAddr8;
unsigned long long ReservedRHTA[7];
unsigned long long Sync; /* Software only */
unsigned long long Dump; /* Software only */
unsigned long long SimVer; /* Software only */
unsigned long long ReservedSW[5];
unsigned long long SerdesConfig0;
unsigned long long SerdesConfig1;
unsigned long long SerdesStatus;
unsigned long long XGXSConfig;
unsigned long long ReservedSW2[4];
};
#define IPATH_KREG_OFFSET(field) (offsetof(struct \
_infinipath_do_not_use_kernel_regs, field) / sizeof(u64))
#define IPATH_CREG_OFFSET(field) (offsetof( \
struct infinipath_counters, field) / sizeof(u64))
static const struct ipath_kregs ipath_ht_kregs = {
.kr_control = IPATH_KREG_OFFSET(Control),
.kr_counterregbase = IPATH_KREG_OFFSET(CounterRegBase),
.kr_debugport = IPATH_KREG_OFFSET(DebugPort),
.kr_debugportselect = IPATH_KREG_OFFSET(DebugPortSelect),
.kr_errorclear = IPATH_KREG_OFFSET(ErrorClear),
.kr_errormask = IPATH_KREG_OFFSET(ErrorMask),
.kr_errorstatus = IPATH_KREG_OFFSET(ErrorStatus),
.kr_extctrl = IPATH_KREG_OFFSET(ExtCtrl),
.kr_extstatus = IPATH_KREG_OFFSET(ExtStatus),
.kr_gpio_clear = IPATH_KREG_OFFSET(GPIOClear),
.kr_gpio_mask = IPATH_KREG_OFFSET(GPIOMask),
.kr_gpio_out = IPATH_KREG_OFFSET(GPIOOut),
.kr_gpio_status = IPATH_KREG_OFFSET(GPIOStatus),
.kr_hwdiagctrl = IPATH_KREG_OFFSET(HwDiagCtrl),
.kr_hwerrclear = IPATH_KREG_OFFSET(HwErrClear),
.kr_hwerrmask = IPATH_KREG_OFFSET(HwErrMask),
.kr_hwerrstatus = IPATH_KREG_OFFSET(HwErrStatus),
.kr_ibcctrl = IPATH_KREG_OFFSET(IBCCtrl),
.kr_ibcstatus = IPATH_KREG_OFFSET(IBCStatus),
.kr_intblocked = IPATH_KREG_OFFSET(IntBlocked),
.kr_intclear = IPATH_KREG_OFFSET(IntClear),
.kr_interruptconfig = IPATH_KREG_OFFSET(InterruptConfig),
.kr_intmask = IPATH_KREG_OFFSET(IntMask),
.kr_intstatus = IPATH_KREG_OFFSET(IntStatus),
.kr_mdio = IPATH_KREG_OFFSET(MDIO),
.kr_pagealign = IPATH_KREG_OFFSET(PageAlign),
.kr_partitionkey = IPATH_KREG_OFFSET(RcvPartitionKey),
.kr_portcnt = IPATH_KREG_OFFSET(PortCnt),
.kr_rcvbthqp = IPATH_KREG_OFFSET(RcvBTHQP),
.kr_rcvbufbase = IPATH_KREG_OFFSET(RcvBufBase),
.kr_rcvbufsize = IPATH_KREG_OFFSET(RcvBufSize),
.kr_rcvctrl = IPATH_KREG_OFFSET(RcvCtrl),
.kr_rcvegrbase = IPATH_KREG_OFFSET(RcvEgrBase),
.kr_rcvegrcnt = IPATH_KREG_OFFSET(RcvEgrCnt),
.kr_rcvhdrcnt = IPATH_KREG_OFFSET(RcvHdrCnt),
.kr_rcvhdrentsize = IPATH_KREG_OFFSET(RcvHdrEntSize),
.kr_rcvhdrsize = IPATH_KREG_OFFSET(RcvHdrSize),
.kr_rcvintmembase = IPATH_KREG_OFFSET(RxIntMemBase),
.kr_rcvintmemsize = IPATH_KREG_OFFSET(RxIntMemSize),
.kr_rcvtidbase = IPATH_KREG_OFFSET(RcvTIDBase),
.kr_rcvtidcnt = IPATH_KREG_OFFSET(RcvTIDCnt),
.kr_revision = IPATH_KREG_OFFSET(Revision),
.kr_scratch = IPATH_KREG_OFFSET(Scratch),
.kr_sendbuffererror = IPATH_KREG_OFFSET(SendBufferError),
.kr_sendctrl = IPATH_KREG_OFFSET(SendCtrl),
.kr_sendpioavailaddr = IPATH_KREG_OFFSET(SendPIOAvailAddr),
.kr_sendpiobufbase = IPATH_KREG_OFFSET(SendPIOBufBase),
.kr_sendpiobufcnt = IPATH_KREG_OFFSET(SendPIOBufCnt),
.kr_sendpiosize = IPATH_KREG_OFFSET(SendPIOSize),
.kr_sendregbase = IPATH_KREG_OFFSET(SendRegBase),
.kr_txintmembase = IPATH_KREG_OFFSET(TxIntMemBase),
.kr_txintmemsize = IPATH_KREG_OFFSET(TxIntMemSize),
.kr_userregbase = IPATH_KREG_OFFSET(UserRegBase),
.kr_serdesconfig0 = IPATH_KREG_OFFSET(SerdesConfig0),
.kr_serdesconfig1 = IPATH_KREG_OFFSET(SerdesConfig1),
.kr_serdesstatus = IPATH_KREG_OFFSET(SerdesStatus),
.kr_xgxsconfig = IPATH_KREG_OFFSET(XGXSConfig),
/*
* These should not be used directly via ipath_read_kreg64(),
* use them with ipath_read_kreg64_port(),
*/
.kr_rcvhdraddr = IPATH_KREG_OFFSET(RcvHdrAddr0),
.kr_rcvhdrtailaddr = IPATH_KREG_OFFSET(RcvHdrTailAddr0)
};
static const struct ipath_cregs ipath_ht_cregs = {
.cr_badformatcnt = IPATH_CREG_OFFSET(RxBadFormatCnt),
.cr_erricrccnt = IPATH_CREG_OFFSET(RxICRCErrCnt),
.cr_errlinkcnt = IPATH_CREG_OFFSET(RxLinkProblemCnt),
.cr_errlpcrccnt = IPATH_CREG_OFFSET(RxLPCRCErrCnt),
.cr_errpkey = IPATH_CREG_OFFSET(RxPKeyMismatchCnt),
.cr_errrcvflowctrlcnt = IPATH_CREG_OFFSET(RxFlowCtrlErrCnt),
.cr_err_rlencnt = IPATH_CREG_OFFSET(RxLenErrCnt),
.cr_errslencnt = IPATH_CREG_OFFSET(TxLenErrCnt),
.cr_errtidfull = IPATH_CREG_OFFSET(RxTIDFullErrCnt),
.cr_errtidvalid = IPATH_CREG_OFFSET(RxTIDValidErrCnt),
.cr_errvcrccnt = IPATH_CREG_OFFSET(RxVCRCErrCnt),
.cr_ibstatuschange = IPATH_CREG_OFFSET(IBStatusChangeCnt),
/* calc from Reg_CounterRegBase + offset */
.cr_intcnt = IPATH_CREG_OFFSET(LBIntCnt),
.cr_invalidrlencnt = IPATH_CREG_OFFSET(RxMaxMinLenErrCnt),
.cr_invalidslencnt = IPATH_CREG_OFFSET(TxMaxMinLenErrCnt),
.cr_lbflowstallcnt = IPATH_CREG_OFFSET(LBFlowStallCnt),
.cr_pktrcvcnt = IPATH_CREG_OFFSET(RxDataPktCnt),
.cr_pktrcvflowctrlcnt = IPATH_CREG_OFFSET(RxFlowPktCnt),
.cr_pktsendcnt = IPATH_CREG_OFFSET(TxDataPktCnt),
.cr_pktsendflowcnt = IPATH_CREG_OFFSET(TxFlowPktCnt),
.cr_portovflcnt = IPATH_CREG_OFFSET(RxP0HdrEgrOvflCnt),
.cr_rcvebpcnt = IPATH_CREG_OFFSET(RxEBPCnt),
.cr_rcvovflcnt = IPATH_CREG_OFFSET(RxBufOvflCnt),
.cr_senddropped = IPATH_CREG_OFFSET(TxDroppedPktCnt),
.cr_sendstallcnt = IPATH_CREG_OFFSET(TxFlowStallCnt),
.cr_sendunderruncnt = IPATH_CREG_OFFSET(TxUnderrunCnt),
.cr_wordrcvcnt = IPATH_CREG_OFFSET(RxDwordCnt),
.cr_wordsendcnt = IPATH_CREG_OFFSET(TxDwordCnt),
.cr_unsupvlcnt = IPATH_CREG_OFFSET(TxUnsupVLErrCnt),
.cr_rxdroppktcnt = IPATH_CREG_OFFSET(RxDroppedPktCnt),
.cr_iblinkerrrecovcnt = IPATH_CREG_OFFSET(IBLinkErrRecoveryCnt),
.cr_iblinkdowncnt = IPATH_CREG_OFFSET(IBLinkDownedCnt),
.cr_ibsymbolerrcnt = IPATH_CREG_OFFSET(IBSymbolErrCnt)
};
/* kr_intstatus, kr_intclear, kr_intmask bits */
#define INFINIPATH_I_RCVURG_MASK 0x1FF
#define INFINIPATH_I_RCVAVAIL_MASK 0x1FF
/* kr_hwerrclear, kr_hwerrmask, kr_hwerrstatus, bits */
#define INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT 0
#define INFINIPATH_HWE_HTCMEMPARITYERR_MASK 0x3FFFFFULL
#define INFINIPATH_HWE_HTCLNKABYTE0CRCERR 0x0000000000800000ULL
#define INFINIPATH_HWE_HTCLNKABYTE1CRCERR 0x0000000001000000ULL
#define INFINIPATH_HWE_HTCLNKBBYTE0CRCERR 0x0000000002000000ULL
#define INFINIPATH_HWE_HTCLNKBBYTE1CRCERR 0x0000000004000000ULL
#define INFINIPATH_HWE_HTCMISCERR4 0x0000000008000000ULL
#define INFINIPATH_HWE_HTCMISCERR5 0x0000000010000000ULL
#define INFINIPATH_HWE_HTCMISCERR6 0x0000000020000000ULL
#define INFINIPATH_HWE_HTCMISCERR7 0x0000000040000000ULL
#define INFINIPATH_HWE_HTCBUSTREQPARITYERR 0x0000000080000000ULL
#define INFINIPATH_HWE_HTCBUSTRESPPARITYERR 0x0000000100000000ULL
#define INFINIPATH_HWE_HTCBUSIREQPARITYERR 0x0000000200000000ULL
#define INFINIPATH_HWE_COREPLL_FBSLIP 0x0080000000000000ULL
#define INFINIPATH_HWE_COREPLL_RFSLIP 0x0100000000000000ULL
#define INFINIPATH_HWE_HTBPLL_FBSLIP 0x0200000000000000ULL
#define INFINIPATH_HWE_HTBPLL_RFSLIP 0x0400000000000000ULL
#define INFINIPATH_HWE_HTAPLL_FBSLIP 0x0800000000000000ULL
#define INFINIPATH_HWE_HTAPLL_RFSLIP 0x1000000000000000ULL
#define INFINIPATH_HWE_SERDESPLLFAILED 0x2000000000000000ULL
/* kr_extstatus bits */
#define INFINIPATH_EXTS_FREQSEL 0x2
#define INFINIPATH_EXTS_SERDESSEL 0x4
#define INFINIPATH_EXTS_MEMBIST_ENDTEST 0x0000000000004000
#define INFINIPATH_EXTS_MEMBIST_CORRECT 0x0000000000008000
/*
* masks and bits that are different in different chips, or present only
* in one
*/
static const ipath_err_t infinipath_hwe_htcmemparityerr_mask =
INFINIPATH_HWE_HTCMEMPARITYERR_MASK;
static const ipath_err_t infinipath_hwe_htcmemparityerr_shift =
INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT;
static const ipath_err_t infinipath_hwe_htclnkabyte0crcerr =
INFINIPATH_HWE_HTCLNKABYTE0CRCERR;
static const ipath_err_t infinipath_hwe_htclnkabyte1crcerr =
INFINIPATH_HWE_HTCLNKABYTE1CRCERR;
static const ipath_err_t infinipath_hwe_htclnkbbyte0crcerr =
INFINIPATH_HWE_HTCLNKBBYTE0CRCERR;
static const ipath_err_t infinipath_hwe_htclnkbbyte1crcerr =
INFINIPATH_HWE_HTCLNKBBYTE1CRCERR;
#define _IPATH_GPIO_SDA_NUM 1
#define _IPATH_GPIO_SCL_NUM 0
#define IPATH_GPIO_SDA \
(1ULL << (_IPATH_GPIO_SDA_NUM+INFINIPATH_EXTC_GPIOOE_SHIFT))
#define IPATH_GPIO_SCL \
(1ULL << (_IPATH_GPIO_SCL_NUM+INFINIPATH_EXTC_GPIOOE_SHIFT))
/* keep the code below somewhat more readonable; not used elsewhere */
#define _IPATH_HTLINK0_CRCBITS (infinipath_hwe_htclnkabyte0crcerr | \
infinipath_hwe_htclnkabyte1crcerr)
#define _IPATH_HTLINK1_CRCBITS (infinipath_hwe_htclnkbbyte0crcerr | \
infinipath_hwe_htclnkbbyte1crcerr)
#define _IPATH_HTLANE0_CRCBITS (infinipath_hwe_htclnkabyte0crcerr | \
infinipath_hwe_htclnkbbyte0crcerr)
#define _IPATH_HTLANE1_CRCBITS (infinipath_hwe_htclnkabyte1crcerr | \
infinipath_hwe_htclnkbbyte1crcerr)
static void hwerr_crcbits(struct ipath_devdata *dd, ipath_err_t hwerrs,
char *msg, size_t msgl)
{
char bitsmsg[64];
ipath_err_t crcbits = hwerrs &
(_IPATH_HTLINK0_CRCBITS | _IPATH_HTLINK1_CRCBITS);
/* don't check if 8bit HT */
if (dd->ipath_flags & IPATH_8BIT_IN_HT0)
crcbits &= ~infinipath_hwe_htclnkabyte1crcerr;
/* don't check if 8bit HT */
if (dd->ipath_flags & IPATH_8BIT_IN_HT1)
crcbits &= ~infinipath_hwe_htclnkbbyte1crcerr;
/*
* we'll want to ignore link errors on link that is
* not in use, if any. For now, complain about both
*/
if (crcbits) {
u16 ctrl0, ctrl1;
snprintf(bitsmsg, sizeof bitsmsg,
"[HT%s lane %s CRC (%llx); ignore till reload]",
!(crcbits & _IPATH_HTLINK1_CRCBITS) ?
"0 (A)" : (!(crcbits & _IPATH_HTLINK0_CRCBITS)
? "1 (B)" : "0+1 (A+B)"),
!(crcbits & _IPATH_HTLANE1_CRCBITS) ? "0"
: (!(crcbits & _IPATH_HTLANE0_CRCBITS) ? "1" :
"0+1"), (unsigned long long) crcbits);
strlcat(msg, bitsmsg, msgl);
/*
* print extra info for debugging. slave/primary
* config word 4, 8 (link control 0, 1)
*/
if (pci_read_config_word(dd->pcidev,
dd->ipath_ht_slave_off + 0x4,
&ctrl0))
dev_info(&dd->pcidev->dev, "Couldn't read "
"linkctrl0 of slave/primary "
"config block\n");
else if (!(ctrl0 & 1 << 6))
/* not if EOC bit set */
ipath_dbg("HT linkctrl0 0x%x%s%s\n", ctrl0,
((ctrl0 >> 8) & 7) ? " CRC" : "",
((ctrl0 >> 4) & 1) ? "linkfail" :
"");
if (pci_read_config_word(dd->pcidev,
dd->ipath_ht_slave_off + 0x8,
&ctrl1))
dev_info(&dd->pcidev->dev, "Couldn't read "
"linkctrl1 of slave/primary "
"config block\n");
else if (!(ctrl1 & 1 << 6))
/* not if EOC bit set */
ipath_dbg("HT linkctrl1 0x%x%s%s\n", ctrl1,
((ctrl1 >> 8) & 7) ? " CRC" : "",
((ctrl1 >> 4) & 1) ? "linkfail" :
"");
/* disable until driver reloaded */
dd->ipath_hwerrmask &= ~crcbits;
ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask,
dd->ipath_hwerrmask);
ipath_dbg("HT crc errs: %s\n", msg);
} else
ipath_dbg("ignoring HT crc errors 0x%llx, "
"not in use\n", (unsigned long long)
(hwerrs & (_IPATH_HTLINK0_CRCBITS |
_IPATH_HTLINK1_CRCBITS)));
}
/**
* ipath_ht_handle_hwerrors - display hardware errors
* @dd: the infinipath device
* @msg: the output buffer
* @msgl: the size of the output buffer
*
* Use same msg buffer as regular errors to avoid
* excessive stack use. Most hardware errors are catastrophic, but for
* right now, we'll print them and continue.
* We reuse the same message buffer as ipath_handle_errors() to avoid
* excessive stack usage.
*/
static void ipath_ht_handle_hwerrors(struct ipath_devdata *dd, char *msg,
size_t msgl)
{
ipath_err_t hwerrs;
u32 bits, ctrl;
int isfatal = 0;
char bitsmsg[64];
hwerrs = ipath_read_kreg64(dd, dd->ipath_kregs->kr_hwerrstatus);
if (!hwerrs) {
ipath_cdbg(VERBOSE, "Called but no hardware errors set\n");
/*
* better than printing cofusing messages
* This seems to be related to clearing the crc error, or
* the pll error during init.
*/
goto bail;
} else if (hwerrs == -1LL) {
ipath_dev_err(dd, "Read of hardware error status failed "
"(all bits set); ignoring\n");
goto bail;
}
ipath_stats.sps_hwerrs++;
/* Always clear the error status register, except MEMBISTFAIL,
* regardless of whether we continue or stop using the chip.
* We want that set so we know it failed, even across driver reload.
* We'll still ignore it in the hwerrmask. We do this partly for
* diagnostics, but also for support */
ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrclear,
hwerrs&~INFINIPATH_HWE_MEMBISTFAILED);
hwerrs &= dd->ipath_hwerrmask;
/*
* make sure we get this much out, unless told to be quiet,
* or it's occurred within the last 5 seconds
*/
if ((hwerrs & ~dd->ipath_lasthwerror) ||
(ipath_debug & __IPATH_VERBDBG))
dev_info(&dd->pcidev->dev, "Hardware error: hwerr=0x%llx "
"(cleared)\n", (unsigned long long) hwerrs);
dd->ipath_lasthwerror |= hwerrs;
if (hwerrs & ~infinipath_hwe_bitsextant)
ipath_dev_err(dd, "hwerror interrupt with unknown errors "
"%llx set\n", (unsigned long long)
(hwerrs & ~infinipath_hwe_bitsextant));
ctrl = ipath_read_kreg32(dd, dd->ipath_kregs->kr_control);
if (ctrl & INFINIPATH_C_FREEZEMODE) {
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 Error (freeze "
"mode), no longer usable\n");
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");
ctrl &= ~INFINIPATH_C_FREEZEMODE;
ipath_write_kreg(dd, dd->ipath_kregs->kr_control,
ctrl);
}
}
*msg = '\0';
/*
* may someday want to decode into which bits are which
* functional area for parity errors, etc.
*/
if (hwerrs & (infinipath_hwe_htcmemparityerr_mask
<< INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT)) {
bits = (u32) ((hwerrs >>
INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT) &
INFINIPATH_HWE_HTCMEMPARITYERR_MASK);
snprintf(bitsmsg, sizeof bitsmsg, "[HTC Parity Errs %x] ",
bits);
strlcat(msg, bitsmsg, msgl);
}
if (hwerrs & (INFINIPATH_HWE_RXEMEMPARITYERR_MASK
<< INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT)) {
bits = (u32) ((hwerrs >>
INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT) &
INFINIPATH_HWE_RXEMEMPARITYERR_MASK);
snprintf(bitsmsg, sizeof bitsmsg, "[RXE Parity Errs %x] ",
bits);
strlcat(msg, bitsmsg, msgl);
}
if (hwerrs & (INFINIPATH_HWE_TXEMEMPARITYERR_MASK
<< INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT)) {
bits = (u32) ((hwerrs >>
INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT) &
INFINIPATH_HWE_TXEMEMPARITYERR_MASK);
snprintf(bitsmsg, sizeof bitsmsg, "[TXE Parity Errs %x] ",
bits);
strlcat(msg, bitsmsg, msgl);
}
if (hwerrs & INFINIPATH_HWE_IBCBUSTOSPCPARITYERR)
strlcat(msg, "[IB2IPATH Parity]", msgl);
if (hwerrs & INFINIPATH_HWE_IBCBUSFRSPCPARITYERR)
strlcat(msg, "[IPATH2IB Parity]", msgl);
if (hwerrs & INFINIPATH_HWE_HTCBUSIREQPARITYERR)
strlcat(msg, "[HTC Ireq Parity]", msgl);
if (hwerrs & INFINIPATH_HWE_HTCBUSTREQPARITYERR)
strlcat(msg, "[HTC Treq Parity]", msgl);
if (hwerrs & INFINIPATH_HWE_HTCBUSTRESPPARITYERR)
strlcat(msg, "[HTC Tresp Parity]", msgl);
if (hwerrs & (_IPATH_HTLINK0_CRCBITS | _IPATH_HTLINK1_CRCBITS))
hwerr_crcbits(dd, hwerrs, msg, msgl);
if (hwerrs & INFINIPATH_HWE_HTCMISCERR5)
strlcat(msg, "[HT core Misc5]", msgl);
if (hwerrs & INFINIPATH_HWE_HTCMISCERR6)
strlcat(msg, "[HT core Misc6]", msgl);
if (hwerrs & INFINIPATH_HWE_HTCMISCERR7)
strlcat(msg, "[HT core Misc7]", msgl);
if (hwerrs & INFINIPATH_HWE_MEMBISTFAILED) {
strlcat(msg, "[Memory BIST test failed, HT-400 unusable]",
msgl);
/* ignore from now on, so disable until driver reloaded */
dd->ipath_hwerrmask &= ~INFINIPATH_HWE_MEMBISTFAILED;
ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask,
dd->ipath_hwerrmask);
}
#define _IPATH_PLL_FAIL (INFINIPATH_HWE_COREPLL_FBSLIP | \
INFINIPATH_HWE_COREPLL_RFSLIP | \
INFINIPATH_HWE_HTBPLL_FBSLIP | \
INFINIPATH_HWE_HTBPLL_RFSLIP | \
INFINIPATH_HWE_HTAPLL_FBSLIP | \
INFINIPATH_HWE_HTAPLL_RFSLIP)
if (hwerrs & _IPATH_PLL_FAIL) {
snprintf(bitsmsg, sizeof bitsmsg,
"[PLL failed (%llx), HT-400 unusable]",
(unsigned long long) (hwerrs & _IPATH_PLL_FAIL));
strlcat(msg, bitsmsg, msgl);
/* ignore from now on, so disable until driver reloaded */
dd->ipath_hwerrmask &= ~(hwerrs & _IPATH_PLL_FAIL);
ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask,
dd->ipath_hwerrmask);
}
if (hwerrs & INFINIPATH_HWE_SERDESPLLFAILED) {
/*
* If it occurs, it is left masked since the eternal
* interface is unused
*/
dd->ipath_hwerrmask &= ~INFINIPATH_HWE_SERDESPLLFAILED;
ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask,
dd->ipath_hwerrmask);
}
if (hwerrs & INFINIPATH_HWE_RXDSYNCMEMPARITYERR)
strlcat(msg, "[Rx Dsync]", msgl);
if (hwerrs & INFINIPATH_HWE_SERDESPLLFAILED)
strlcat(msg, "[SerDes PLL]", msgl);
ipath_dev_err(dd, "%s hardware error\n", msg);
if (isfatal && !ipath_diag_inuse && dd->ipath_freezemsg)
/*
* for status file; if no trailing brace is copied,
* we'll know it was truncated.
*/
snprintf(dd->ipath_freezemsg,
dd->ipath_freezelen, "{%s}", msg);
bail:;
}
/**
* ipath_ht_boardname - fill in the board name
* @dd: the infinipath device
* @name: the output buffer
* @namelen: the size of the output buffer
*
* fill in the board name, based on the board revision register
*/
static int ipath_ht_boardname(struct ipath_devdata *dd, char *name,
size_t namelen)
{
char *n = NULL;
u8 boardrev = dd->ipath_boardrev;
int ret;
switch (boardrev) {
case 4: /* Ponderosa is one of the bringup boards */
n = "Ponderosa";
break;
case 5:
/*
* HT-460 original production board; two production levels, with
* different serial number ranges. See ipath_ht_early_init() for
* case where we enable IPATH_GPIO_INTR for later serial # range.
*/
n = "InfiniPath_HT-460";
break;
case 6:
n = "OEM_Board_3";
break;
case 7:
/* HT-460 small form factor production board */
n = "InfiniPath_HT-465";
break;
case 8:
n = "LS/X-1";
break;
case 9: /* Comstock bringup test board */
n = "Comstock";
break;
case 10:
n = "OEM_Board_2";
break;
case 11:
n = "InfiniPath_HT-470";
break;
case 12:
n = "OEM_Board_4";
break;
default: /* don't know, just print the number */
ipath_dev_err(dd, "Don't yet know about board "
"with ID %u\n", boardrev);
snprintf(name, namelen, "Unknown_InfiniPath_HT-4xx_%u",
boardrev);
break;
}
if (n)
snprintf(name, namelen, "%s", n);
if (dd->ipath_majrev != 3 || (dd->ipath_minrev < 2 || dd->ipath_minrev > 3)) {
/*
* This version of the driver only supports the HT-400
* Rev 3.2
*/
ipath_dev_err(dd,
"Unsupported HT-400 revision %u.%u!\n",
dd->ipath_majrev, dd->ipath_minrev);
ret = 1;
goto bail;
}
/*
* pkt/word counters are 32 bit, and therefore wrap fast enough
* that we snapshot them from a timer, and maintain 64 bit shadow
* copies
*/
dd->ipath_flags |= IPATH_32BITCOUNTERS;
if (dd->ipath_htspeed != 800)
ipath_dev_err(dd,
"Incorrectly configured for HT @ %uMHz\n",
dd->ipath_htspeed);
if (dd->ipath_boardrev == 7 || dd->ipath_boardrev == 11 ||
dd->ipath_boardrev == 6)
dd->ipath_flags |= IPATH_GPIO_INTR;
else
dd->ipath_flags |= IPATH_POLL_RX_INTR;
if (dd->ipath_boardrev == 8) { /* LS/X-1 */
u64 val;
val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_extstatus);
if (val & INFINIPATH_EXTS_SERDESSEL) {
/*
* hardware disabled
*
* This means that the chip is hardware disabled,
* and will not be able to bring up the link,
* in any case. We special case this and abort
* early, to avoid later messages. We also set
* the DISABLED status bit
*/
ipath_dbg("Unit %u is hardware-disabled\n",
dd->ipath_unit);
*dd->ipath_statusp |= IPATH_STATUS_DISABLED;
/* this value is handled differently */
ret = 2;
goto bail;
}
}
ret = 0;
bail:
return ret;
}
static void ipath_check_htlink(struct ipath_devdata *dd)
{
u8 linkerr, link_off, i;
for (i = 0; i < 2; i++) {
link_off = dd->ipath_ht_slave_off + i * 4 + 0xd;
if (pci_read_config_byte(dd->pcidev, link_off, &linkerr))
dev_info(&dd->pcidev->dev, "Couldn't read "
"linkerror%d of HT slave/primary block\n",
i);
else if (linkerr & 0xf0) {
ipath_cdbg(VERBOSE, "HT linkerr%d bits 0x%x set, "
"clearing\n", linkerr >> 4, i);
/*
* writing the linkerr bits that are set should
* clear them
*/
if (pci_write_config_byte(dd->pcidev, link_off,
linkerr))
ipath_dbg("Failed write to clear HT "
"linkerror%d\n", i);
if (pci_read_config_byte(dd->pcidev, link_off,
&linkerr))
dev_info(&dd->pcidev->dev,
"Couldn't reread linkerror%d of "
"HT slave/primary block\n", i);
else if (linkerr & 0xf0)
dev_info(&dd->pcidev->dev,
"HT linkerror%d bits 0x%x "
"couldn't be cleared\n",
i, linkerr >> 4);
}
}
}
static int ipath_setup_ht_reset(struct ipath_devdata *dd)
{
ipath_dbg("No reset possible for HT-400\n");
return 0;
}
#define HT_CAPABILITY_ID 0x08 /* HT capabilities not defined in kernel */
#define HT_INTR_DISC_CONFIG 0x80 /* HT interrupt and discovery cap */
#define HT_INTR_REG_INDEX 2 /* intconfig requires indirect accesses */
/*
* Bits 13-15 of command==0 is slave/primary block. Clear any HT CRC
* errors. We only bother to do this at load time, because it's OK if
* it happened before we were loaded (first time after boot/reset),
* but any time after that, it's fatal anyway. Also need to not check
* for for upper byte errors if we are in 8 bit mode, so figure out
* our width. For now, at least, also complain if it's 8 bit.
*/
static void slave_or_pri_blk(struct ipath_devdata *dd, struct pci_dev *pdev,
int pos, u8 cap_type)
{
u8 linkwidth = 0, linkerr, link_a_b_off, link_off;
u16 linkctrl = 0;
int i;
dd->ipath_ht_slave_off = pos;
/* command word, master_host bit */
/* master host || slave */
if ((cap_type >> 2) & 1)
link_a_b_off = 4;
else
link_a_b_off = 0;
ipath_cdbg(VERBOSE, "HT%u (Link %c) connected to processor\n",
link_a_b_off ? 1 : 0,
link_a_b_off ? 'B' : 'A');
link_a_b_off += pos;
/*
* check both link control registers; clear both HT CRC sets if
* necessary.
*/
for (i = 0; i < 2; i++) {
link_off = pos + i * 4 + 0x4;
if (pci_read_config_word(pdev, link_off, &linkctrl))
ipath_dev_err(dd, "Couldn't read HT link control%d "
"register\n", i);
else if (linkctrl & (0xf << 8)) {
ipath_cdbg(VERBOSE, "Clear linkctrl%d CRC Error "
"bits %x\n", i, linkctrl & (0xf << 8));
/*
* now write them back to clear the error.
*/
pci_write_config_byte(pdev, link_off,
linkctrl & (0xf << 8));
}
}
/*
* As with HT CRC bits, same for protocol errors that might occur
* during boot.
*/
for (i = 0; i < 2; i++) {
link_off = pos + i * 4 + 0xd;
if (pci_read_config_byte(pdev, link_off, &linkerr))
dev_info(&pdev->dev, "Couldn't read linkerror%d "
"of HT slave/primary block\n", i);
else if (linkerr & 0xf0) {
ipath_cdbg(VERBOSE, "HT linkerr%d bits 0x%x set, "
"clearing\n", linkerr >> 4, i);
/*
* writing the linkerr bits that are set will clear
* them
*/
if (pci_write_config_byte
(pdev, link_off, linkerr))
ipath_dbg("Failed write to clear HT "
"linkerror%d\n", i);
if (pci_read_config_byte(pdev, link_off, &linkerr))
dev_info(&pdev->dev, "Couldn't reread "
"linkerror%d of HT slave/primary "
"block\n", i);
else if (linkerr & 0xf0)
dev_info(&pdev->dev, "HT linkerror%d bits "
"0x%x couldn't be cleared\n",
i, linkerr >> 4);
}
}
/*
* this is just for our link to the host, not devices connected
* through tunnel.
*/
if (pci_read_config_byte(pdev, link_a_b_off + 7, &linkwidth))
ipath_dev_err(dd, "Couldn't read HT link width "
"config register\n");
else {
u32 width;
switch (linkwidth & 7) {
case 5:
width = 4;
break;
case 4:
width = 2;
break;
case 3:
width = 32;
break;
case 1:
width = 16;
break;
case 0:
default: /* if wrong, assume 8 bit */
width = 8;
break;
}
dd->ipath_htwidth = width;
if (linkwidth != 0x11) {
ipath_dev_err(dd, "Not configured for 16 bit HT "
"(%x)\n", linkwidth);
if (!(linkwidth & 0xf)) {
ipath_dbg("Will ignore HT lane1 errors\n");
dd->ipath_flags |= IPATH_8BIT_IN_HT0;
}
}
}
/*
* this is just for our link to the host, not devices connected
* through tunnel.
*/
if (pci_read_config_byte(pdev, link_a_b_off + 0xd, &linkwidth))
ipath_dev_err(dd, "Couldn't read HT link frequency "
"config register\n");
else {
u32 speed;
switch (linkwidth & 0xf) {
case 6:
speed = 1000;
break;
case 5:
speed = 800;
break;
case 4:
speed = 600;
break;
case 3:
speed = 500;
break;
case 2:
speed = 400;
break;
case 1:
speed = 300;
break;
default:
/*
* assume reserved and vendor-specific are 200...
*/
case 0:
speed = 200;
break;
}
dd->ipath_htspeed = speed;
}
}
static int set_int_handler(struct ipath_devdata *dd, struct pci_dev *pdev,
int pos)
{
u32 int_handler_addr_lower;
u32 int_handler_addr_upper;
u64 ihandler;
u32 intvec;
/* use indirection register to get the intr handler */
pci_write_config_byte(pdev, pos + HT_INTR_REG_INDEX, 0x10);
pci_read_config_dword(pdev, pos + 4, &int_handler_addr_lower);
pci_write_config_byte(pdev, pos + HT_INTR_REG_INDEX, 0x11);
pci_read_config_dword(pdev, pos + 4, &int_handler_addr_upper);
ihandler = (u64) int_handler_addr_lower |
((u64) int_handler_addr_upper << 32);
/*
* kernels with CONFIG_PCI_MSI set the vector in the irq field of
* struct pci_device, so we use that to program the HT-400 internal
* interrupt register (not config space) with that value. The BIOS
* must still have done the basic MSI setup.
*/
intvec = pdev->irq;
/*
* clear any vector bits there; normally not set but we'll overload
* this for some debug purposes (setting the HTC debug register
* value from software, rather than GPIOs), so it might be set on a
* driver reload.
*/
ihandler &= ~0xff0000;
/* x86 vector goes in intrinfo[23:16] */
ihandler |= intvec << 16;
ipath_cdbg(VERBOSE, "ihandler lower %x, upper %x, intvec %x, "
"interruptconfig %llx\n", int_handler_addr_lower,
int_handler_addr_upper, intvec,
(unsigned long long) ihandler);
/* can't program yet, so save for interrupt setup */
dd->ipath_intconfig = ihandler;
/* keep going, so we find link control stuff also */
return ihandler != 0;
}
/**
* ipath_setup_ht_config - setup the interruptconfig register
* @dd: the infinipath device
* @pdev: the PCI device
*
* setup the interruptconfig register from the HT config info.
* Also clear CRC errors in HT linkcontrol, if necessary.
* This is done only for the real hardware. It is done before
* chip address space is initted, so can't touch infinipath registers
*/
static int ipath_setup_ht_config(struct ipath_devdata *dd,
struct pci_dev *pdev)
{
int pos, ret = 0;
int ihandler = 0;
/*
* Read the capability info to find the interrupt info, and also
* handle clearing CRC errors in linkctrl register if necessary. We
* do this early, before we ever enable errors or hardware errors,
* mostly to avoid causing the chip to enter freeze mode.
*/
pos = pci_find_capability(pdev, HT_CAPABILITY_ID);
if (!pos) {
ipath_dev_err(dd, "Couldn't find HyperTransport "
"capability; no interrupts\n");
ret = -ENODEV;
goto bail;
}
do {
u8 cap_type;
/* the HT capability type byte is 3 bytes after the
* capability byte.
*/
if (pci_read_config_byte(pdev, pos + 3, &cap_type)) {
dev_info(&pdev->dev, "Couldn't read config "
"command @ %d\n", pos);
continue;
}
if (!(cap_type & 0xE0))
slave_or_pri_blk(dd, pdev, pos, cap_type);
else if (cap_type == HT_INTR_DISC_CONFIG)
ihandler = set_int_handler(dd, pdev, pos);
} while ((pos = pci_find_next_capability(pdev, pos,
HT_CAPABILITY_ID)));
if (!ihandler) {
ipath_dev_err(dd, "Couldn't find interrupt handler in "
"config space\n");
ret = -ENODEV;
}
bail:
return ret;
}
/**
* ipath_setup_ht_cleanup - clean up any per-chip chip-specific stuff
* @dd: the infinipath device
*
* Called during driver unload.
* This is currently a nop for the HT-400, not for all chips
*/
static void ipath_setup_ht_cleanup(struct ipath_devdata *dd)
{
}
/**
* ipath_setup_ht_setextled - set the state of the two external LEDs
* @dd: the infinipath device
* @lst: the L state
* @ltst: the LT state
*
* Set the state of the two external LEDs, to indicate physical and
* logical state of IB link. For this chip (at least with recommended
* board pinouts), LED1 is Green (physical state), and LED2 is Yellow
* (logical state)
*
* Note: We try to match the Mellanox HCA LED behavior as best
* we can. Green indicates physical link state is OK (something is
* plugged in, and we can train).
* Amber indicates the link is logically up (ACTIVE).
* Mellanox further blinks the amber LED to indicate data packet
* activity, but we have no hardware support for that, so it would
* require waking up every 10-20 msecs and checking the counters
* on the chip, and then turning the LED off if appropriate. That's
* visible overhead, so not something we will do.
*
*/
static void ipath_setup_ht_setextled(struct ipath_devdata *dd,
u64 lst, u64 ltst)
{
u64 extctl;
/* the diags use the LED to indicate diag info, so we leave
* the external LED alone when the diags are running */
if (ipath_diag_inuse)
return;
/*
* start by setting both LED control bits to off, then turn
* on the appropriate bit(s).
*/
if (dd->ipath_boardrev == 8) { /* LS/X-1 uses different pins */
/*
* major difference is that INFINIPATH_EXTC_LEDGBLERR_OFF
* is inverted, because it is normally used to indicate
* a hardware fault at reset, if there were errors
*/
extctl = (dd->ipath_extctrl & ~INFINIPATH_EXTC_LEDGBLOK_ON)
| INFINIPATH_EXTC_LEDGBLERR_OFF;
if (ltst == INFINIPATH_IBCS_LT_STATE_LINKUP)
extctl &= ~INFINIPATH_EXTC_LEDGBLERR_OFF;
if (lst == INFINIPATH_IBCS_L_STATE_ACTIVE)
extctl |= INFINIPATH_EXTC_LEDGBLOK_ON;
}
else {
extctl = dd->ipath_extctrl &
~(INFINIPATH_EXTC_LED1PRIPORT_ON |
INFINIPATH_EXTC_LED2PRIPORT_ON);
if (ltst == INFINIPATH_IBCS_LT_STATE_LINKUP)
extctl |= INFINIPATH_EXTC_LED1PRIPORT_ON;
if (lst == INFINIPATH_IBCS_L_STATE_ACTIVE)
extctl |= INFINIPATH_EXTC_LED2PRIPORT_ON;
}
dd->ipath_extctrl = extctl;
ipath_write_kreg(dd, dd->ipath_kregs->kr_extctrl, extctl);
}
static void ipath_init_ht_variables(void)
{
ipath_gpio_sda_num = _IPATH_GPIO_SDA_NUM;
ipath_gpio_scl_num = _IPATH_GPIO_SCL_NUM;
ipath_gpio_sda = IPATH_GPIO_SDA;
ipath_gpio_scl = IPATH_GPIO_SCL;
infinipath_i_bitsextant =
(INFINIPATH_I_RCVURG_MASK << INFINIPATH_I_RCVURG_SHIFT) |
(INFINIPATH_I_RCVAVAIL_MASK <<
INFINIPATH_I_RCVAVAIL_SHIFT) |
INFINIPATH_I_ERROR | INFINIPATH_I_SPIOSENT |
INFINIPATH_I_SPIOBUFAVAIL | INFINIPATH_I_GPIO;
infinipath_e_bitsextant =
INFINIPATH_E_RFORMATERR | INFINIPATH_E_RVCRC |
INFINIPATH_E_RICRC | INFINIPATH_E_RMINPKTLEN |
INFINIPATH_E_RMAXPKTLEN | INFINIPATH_E_RLONGPKTLEN |
INFINIPATH_E_RSHORTPKTLEN | INFINIPATH_E_RUNEXPCHAR |
INFINIPATH_E_RUNSUPVL | INFINIPATH_E_REBP |
INFINIPATH_E_RIBFLOW | INFINIPATH_E_RBADVERSION |
INFINIPATH_E_RRCVEGRFULL | INFINIPATH_E_RRCVHDRFULL |
INFINIPATH_E_RBADTID | INFINIPATH_E_RHDRLEN |
INFINIPATH_E_RHDR | INFINIPATH_E_RIBLOSTLINK |
INFINIPATH_E_SMINPKTLEN | INFINIPATH_E_SMAXPKTLEN |
INFINIPATH_E_SUNDERRUN | INFINIPATH_E_SPKTLEN |
INFINIPATH_E_SDROPPEDSMPPKT | INFINIPATH_E_SDROPPEDDATAPKT |
INFINIPATH_E_SPIOARMLAUNCH | INFINIPATH_E_SUNEXPERRPKTNUM |
INFINIPATH_E_SUNSUPVL | INFINIPATH_E_IBSTATUSCHANGED |
INFINIPATH_E_INVALIDADDR | INFINIPATH_E_RESET |
INFINIPATH_E_HARDWARE;
infinipath_hwe_bitsextant =
(INFINIPATH_HWE_HTCMEMPARITYERR_MASK <<
INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT) |
(INFINIPATH_HWE_TXEMEMPARITYERR_MASK <<
INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT) |
(INFINIPATH_HWE_RXEMEMPARITYERR_MASK <<
INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT) |
INFINIPATH_HWE_HTCLNKABYTE0CRCERR |
INFINIPATH_HWE_HTCLNKABYTE1CRCERR |
INFINIPATH_HWE_HTCLNKBBYTE0CRCERR |
INFINIPATH_HWE_HTCLNKBBYTE1CRCERR |
INFINIPATH_HWE_HTCMISCERR4 |
INFINIPATH_HWE_HTCMISCERR5 | INFINIPATH_HWE_HTCMISCERR6 |
INFINIPATH_HWE_HTCMISCERR7 |
INFINIPATH_HWE_HTCBUSTREQPARITYERR |
INFINIPATH_HWE_HTCBUSTRESPPARITYERR |
INFINIPATH_HWE_HTCBUSIREQPARITYERR |
INFINIPATH_HWE_RXDSYNCMEMPARITYERR |
INFINIPATH_HWE_MEMBISTFAILED |
INFINIPATH_HWE_COREPLL_FBSLIP |
INFINIPATH_HWE_COREPLL_RFSLIP |
INFINIPATH_HWE_HTBPLL_FBSLIP |
INFINIPATH_HWE_HTBPLL_RFSLIP |
INFINIPATH_HWE_HTAPLL_FBSLIP |
INFINIPATH_HWE_HTAPLL_RFSLIP |
INFINIPATH_HWE_SERDESPLLFAILED |
INFINIPATH_HWE_IBCBUSTOSPCPARITYERR |
INFINIPATH_HWE_IBCBUSFRSPCPARITYERR;
infinipath_i_rcvavail_mask = INFINIPATH_I_RCVAVAIL_MASK;
infinipath_i_rcvurg_mask = INFINIPATH_I_RCVURG_MASK;
}
/**
* ipath_ht_init_hwerrors - enable hardware errors
* @dd: the infinipath device
*
* now that we have finished initializing everything that might reasonably
* cause a hardware error, and cleared those errors bits as they occur,
* we can enable hardware errors in the mask (potentially enabling
* freeze mode), and enable hardware errors as errors (along with
* everything else) in errormask
*/
static void ipath_ht_init_hwerrors(struct ipath_devdata *dd)
{
ipath_err_t val;
u64 extsval;
extsval = ipath_read_kreg64(dd, dd->ipath_kregs->kr_extstatus);
if (!(extsval & INFINIPATH_EXTS_MEMBIST_ENDTEST))
ipath_dev_err(dd, "MemBIST did not complete!\n");
ipath_check_htlink(dd);
/* barring bugs, all hwerrors become interrupts, which can */
val = -1LL;
/* don't look at crc lane1 if 8 bit */
if (dd->ipath_flags & IPATH_8BIT_IN_HT0)
val &= ~infinipath_hwe_htclnkabyte1crcerr;
/* don't look at crc lane1 if 8 bit */
if (dd->ipath_flags & IPATH_8BIT_IN_HT1)
val &= ~infinipath_hwe_htclnkbbyte1crcerr;
/*
* disable RXDSYNCMEMPARITY because external serdes is unused,
* and therefore the logic will never be used or initialized,
* and uninitialized state will normally result in this error
* being asserted. Similarly for the external serdess pll
* lock signal.
*/
val &= ~(INFINIPATH_HWE_SERDESPLLFAILED |
INFINIPATH_HWE_RXDSYNCMEMPARITYERR);
/*
* Disable MISCERR4 because of an inversion in the HT core
* logic checking for errors that cause this bit to be set.
* The errata can also cause the protocol error bit to be set
* in the HT config space linkerror register(s).
*/
val &= ~INFINIPATH_HWE_HTCMISCERR4;
/*
* PLL ignored because MDIO interface has a logic problem
* for reads, on Comstock and Ponderosa. BRINGUP
*/
if (dd->ipath_boardrev == 4 || dd->ipath_boardrev == 9)
val &= ~INFINIPATH_HWE_SERDESPLLFAILED;
dd->ipath_hwerrmask = val;
}
/**
* ipath_ht_bringup_serdes - bring up the serdes
* @dd: the infinipath device
*/
static int ipath_ht_bringup_serdes(struct ipath_devdata *dd)
{
u64 val, config1;
int ret = 0, change = 0;
ipath_dbg("Trying to bringup serdes\n");
if (ipath_read_kreg64(dd, dd->ipath_kregs->kr_hwerrstatus) &
INFINIPATH_HWE_SERDESPLLFAILED)
{
ipath_dbg("At start, serdes PLL failed bit set in "
"hwerrstatus, clearing and continuing\n");
ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrclear,
INFINIPATH_HWE_SERDESPLLFAILED);
}
val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesconfig0);
config1 = ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesconfig1);
ipath_cdbg(VERBOSE, "Initial serdes status is config0=%llx "
"config1=%llx, sstatus=%llx xgxs %llx\n",
(unsigned long long) val, (unsigned long long) config1,
(unsigned long long)
ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesstatus),
(unsigned long long)
ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig));
/* force reset on */
val |= INFINIPATH_SERDC0_RESET_PLL
/* | INFINIPATH_SERDC0_RESET_MASK */
;
ipath_write_kreg(dd, dd->ipath_kregs->kr_serdesconfig0, val);
udelay(15); /* need pll reset set at least for a bit */
if (val & INFINIPATH_SERDC0_RESET_PLL) {
u64 val2 = val &= ~INFINIPATH_SERDC0_RESET_PLL;
/* set lane resets, and tx idle, during pll reset */
val2 |= INFINIPATH_SERDC0_RESET_MASK |
INFINIPATH_SERDC0_TXIDLE;
ipath_cdbg(VERBOSE, "Clearing serdes PLL reset (writing "
"%llx)\n", (unsigned long long) val2);
ipath_write_kreg(dd, dd->ipath_kregs->kr_serdesconfig0,
val2);
/*
* be sure chip saw it
*/
val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch);
/*
* need pll reset clear at least 11 usec before lane
* resets cleared; give it a few more
*/
udelay(15);
val = val2; /* for check below */
}
if (val & (INFINIPATH_SERDC0_RESET_PLL |
INFINIPATH_SERDC0_RESET_MASK |
INFINIPATH_SERDC0_TXIDLE)) {
val &= ~(INFINIPATH_SERDC0_RESET_PLL |
INFINIPATH_SERDC0_RESET_MASK |
INFINIPATH_SERDC0_TXIDLE);
/* clear them */
ipath_write_kreg(dd, dd->ipath_kregs->kr_serdesconfig0,
val);
}
val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig);
if (((val >> INFINIPATH_XGXS_MDIOADDR_SHIFT) &
INFINIPATH_XGXS_MDIOADDR_MASK) != 3) {
val &= ~(INFINIPATH_XGXS_MDIOADDR_MASK <<
INFINIPATH_XGXS_MDIOADDR_SHIFT);
/*
* we use address 3
*/
val |= 3ULL << INFINIPATH_XGXS_MDIOADDR_SHIFT;
change = 1;
}
if (val & INFINIPATH_XGXS_RESET) {
/* normally true after boot */
val &= ~INFINIPATH_XGXS_RESET;
change = 1;
}
if (change)
ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val);
val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesconfig0);
/* clear current and de-emphasis bits */
config1 &= ~0x0ffffffff00ULL;
/* set current to 20ma */
config1 |= 0x00000000000ULL;
/* set de-emphasis to -5.68dB */
config1 |= 0x0cccc000000ULL;
ipath_write_kreg(dd, dd->ipath_kregs->kr_serdesconfig1, config1);
ipath_cdbg(VERBOSE, "After setup: serdes status is config0=%llx "
"config1=%llx, sstatus=%llx xgxs %llx\n",
(unsigned long long) val, (unsigned long long) config1,
(unsigned long long)
ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesstatus),
(unsigned long long)
ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig));
if (!ipath_waitfor_mdio_cmdready(dd)) {
ipath_write_kreg(dd, dd->ipath_kregs->kr_mdio,
ipath_mdio_req(IPATH_MDIO_CMD_READ, 31,
IPATH_MDIO_CTRL_XGXS_REG_8,
0));
if (ipath_waitfor_complete(dd, dd->ipath_kregs->kr_mdio,
IPATH_MDIO_DATAVALID, &val))
ipath_dbg("Never got MDIO data for XGXS status "
"read\n");
else
ipath_cdbg(VERBOSE, "MDIO Read reg8, "
"'bank' 31 %x\n", (u32) val);
} else
ipath_dbg("Never got MDIO cmdready for XGXS status read\n");
return ret; /* for now, say we always succeeded */
}
/**
* ipath_ht_quiet_serdes - set serdes to txidle
* @dd: the infinipath device
* driver is being unloaded
*/
static void ipath_ht_quiet_serdes(struct ipath_devdata *dd)
{
u64 val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesconfig0);
val |= INFINIPATH_SERDC0_TXIDLE;
ipath_dbg("Setting TxIdleEn on serdes (config0 = %llx)\n",
(unsigned long long) val);
ipath_write_kreg(dd, dd->ipath_kregs->kr_serdesconfig0, val);
}
static int ipath_ht_intconfig(struct ipath_devdata *dd)
{
int ret;
if (!dd->ipath_intconfig) {
ipath_dev_err(dd, "No interrupts enabled, couldn't setup "
"interrupt address\n");
ret = 1;
goto bail;
}
ipath_write_kreg(dd, dd->ipath_kregs->kr_interruptconfig,
dd->ipath_intconfig); /* interrupt address */
ret = 0;
bail:
return ret;
}
/**
* ipath_pe_put_tid - write a TID in chip
* @dd: the infinipath device
* @tidptr: pointer to the expected TID (in chip) to udpate
* @tidtype: 0 for eager, 1 for expected
* @pa: physical address of in memory buffer; ipath_tidinvalid if freeing
*
* This exists as a separate routine to allow for special locking etc.
* It's used for both the full cleanup on exit, as well as the normal
* setup and teardown.
*/
static void ipath_ht_put_tid(struct ipath_devdata *dd,
u64 __iomem *tidptr, u32 type,
unsigned long pa)
{
if (pa != dd->ipath_tidinvalid) {
if (unlikely((pa & ~INFINIPATH_RT_ADDR_MASK))) {
dev_info(&dd->pcidev->dev,
"physaddr %lx has more than "
"40 bits, using only 40!!!\n", pa);
pa &= INFINIPATH_RT_ADDR_MASK;
}
if (type == 0)
pa |= dd->ipath_tidtemplate;
else {
/* in words (fixed, full page). */
u64 lenvalid = PAGE_SIZE >> 2;
lenvalid <<= INFINIPATH_RT_BUFSIZE_SHIFT;
pa |= lenvalid | INFINIPATH_RT_VALID;
}
}
if (dd->ipath_kregbase)
writeq(pa, tidptr);
}
/**
* ipath_ht_clear_tid - clear all TID entries for a port, expected and eager
* @dd: the infinipath device
* @port: the port
*
* Used from ipath_close(), and at chip initialization.
*/
static void ipath_ht_clear_tids(struct ipath_devdata *dd, unsigned port)
{
u64 __iomem *tidbase;
int i;
if (!dd->ipath_kregbase)
return;
ipath_cdbg(VERBOSE, "Invalidate TIDs for port %u\n", port);
/*
* need to invalidate all of the expected TID entries for this
* port, so we don't have valid entries that might somehow get
* used (early in next use of this port, or through some bug)
*/
tidbase = (u64 __iomem *) ((char __iomem *)(dd->ipath_kregbase) +
dd->ipath_rcvtidbase +
port * dd->ipath_rcvtidcnt *
sizeof(*tidbase));
for (i = 0; i < dd->ipath_rcvtidcnt; i++)
ipath_ht_put_tid(dd, &tidbase[i], 1, dd->ipath_tidinvalid);
tidbase = (u64 __iomem *) ((char __iomem *)(dd->ipath_kregbase) +
dd->ipath_rcvegrbase +
port * dd->ipath_rcvegrcnt *
sizeof(*tidbase));
for (i = 0; i < dd->ipath_rcvegrcnt; i++)
ipath_ht_put_tid(dd, &tidbase[i], 0, dd->ipath_tidinvalid);
}
/**
* ipath_ht_tidtemplate - setup constants for TID updates
* @dd: the infinipath device
*
* We setup stuff that we use a lot, to avoid calculating each time
*/
static void ipath_ht_tidtemplate(struct ipath_devdata *dd)
{
dd->ipath_tidtemplate = dd->ipath_ibmaxlen >> 2;
dd->ipath_tidtemplate <<= INFINIPATH_RT_BUFSIZE_SHIFT;
dd->ipath_tidtemplate |= INFINIPATH_RT_VALID;
/*
* work around chip errata bug 7358, by marking invalid tids
* as having max length
*/
dd->ipath_tidinvalid = (-1LL & INFINIPATH_RT_BUFSIZE_MASK) <<
INFINIPATH_RT_BUFSIZE_SHIFT;
}
static int ipath_ht_early_init(struct ipath_devdata *dd)
{
u32 __iomem *piobuf;
u32 pioincr, val32, egrsize;
int i;
/*
* one cache line; long IB headers will spill over into received
* buffer
*/
dd->ipath_rcvhdrentsize = 16;
dd->ipath_rcvhdrsize = IPATH_DFLT_RCVHDRSIZE;
/*
* For HT-400, we allocate a somewhat overly large eager buffer,
* such that we can guarantee that we can receive the largest
* packet that we can send out. To truly support a 4KB MTU,
* we need to bump this to a large value. To date, other than
* testing, we have never encountered an HCA that can really
* send 4KB MTU packets, so we do not handle that (we'll get
* errors interrupts if we ever see one).
*/
dd->ipath_rcvegrbufsize = dd->ipath_piosize2k;
egrsize = dd->ipath_rcvegrbufsize;
/*
* the min() check here is currently a nop, but it may not
* always be, depending on just how we do ipath_rcvegrbufsize
*/
dd->ipath_ibmaxlen = min(dd->ipath_piosize2k,
dd->ipath_rcvegrbufsize);
dd->ipath_init_ibmaxlen = dd->ipath_ibmaxlen;
ipath_ht_tidtemplate(dd);
/*
* zero all the TID entries at startup. We do this for sanity,
* in case of a previous driver crash of some kind, and also
* because the chip powers up with these memories in an unknown
* state. Use portcnt, not cfgports, since this is for the
* full chip, not for current (possibly different) configuration
* value.
* Chip Errata bug 6447
*/
for (val32 = 0; val32 < dd->ipath_portcnt; val32++)
ipath_ht_clear_tids(dd, val32);
/*
* write the pbc of each buffer, to be sure it's initialized, then
* cancel all the buffers, and also abort any packets that might
* have been in flight for some reason (the latter is for driver
* unload/reload, but isn't a bad idea at first init). PIO send
* isn't enabled at this point, so there is no danger of sending
* these out on the wire.
* Chip Errata bug 6610
*/
piobuf = (u32 __iomem *) (((char __iomem *)(dd->ipath_kregbase)) +
dd->ipath_piobufbase);
pioincr = dd->ipath_palign / sizeof(*piobuf);
for (i = 0; i < dd->ipath_piobcnt2k; i++) {
/*
* reasonable word count, just to init pbc
*/
writel(16, piobuf);
piobuf += pioincr;
}
/*
* self-clearing
*/
ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl,
INFINIPATH_S_ABORT);
ipath_get_eeprom_info(dd);
if(dd->ipath_boardrev == 5 && dd->ipath_serial[0] == '1' &&
dd->ipath_serial[1] == '2' && dd->ipath_serial[2] == '8') {
/*
* Later production HT-460 has same changes as HT-465, so
* can use GPIO interrupts. They have serial #'s starting
* with 128, rather than 112.
*/
dd->ipath_flags |= IPATH_GPIO_INTR;
dd->ipath_flags &= ~IPATH_POLL_RX_INTR;
}
return 0;
}
/**
* ipath_init_ht_get_base_info - set chip-specific flags for user code
* @dd: the infinipath device
* @kbase: ipath_base_info pointer
*
* We set the PCIE flag because the lower bandwidth on PCIe vs
* HyperTransport can affect some user packet algorithims.
*/
static int ipath_ht_get_base_info(struct ipath_portdata *pd, void *kbase)
{
struct ipath_base_info *kinfo = kbase;
kinfo->spi_runtime_flags |= IPATH_RUNTIME_HT |
IPATH_RUNTIME_RCVHDR_COPY;
return 0;
}
/**
* ipath_init_ht400_funcs - set up the chip-specific function pointers
* @dd: the infinipath device
*
* This is global, and is called directly at init to set up the
* chip-specific function pointers for later use.
*/
void ipath_init_ht400_funcs(struct ipath_devdata *dd)
{
dd->ipath_f_intrsetup = ipath_ht_intconfig;
dd->ipath_f_bus = ipath_setup_ht_config;
dd->ipath_f_reset = ipath_setup_ht_reset;
dd->ipath_f_get_boardname = ipath_ht_boardname;
dd->ipath_f_init_hwerrors = ipath_ht_init_hwerrors;
dd->ipath_f_early_init = ipath_ht_early_init;
dd->ipath_f_handle_hwerrors = ipath_ht_handle_hwerrors;
dd->ipath_f_quiet_serdes = ipath_ht_quiet_serdes;
dd->ipath_f_bringup_serdes = ipath_ht_bringup_serdes;
dd->ipath_f_clear_tids = ipath_ht_clear_tids;
dd->ipath_f_put_tid = ipath_ht_put_tid;
dd->ipath_f_cleanup = ipath_setup_ht_cleanup;
dd->ipath_f_setextled = ipath_setup_ht_setextled;
dd->ipath_f_get_base_info = ipath_ht_get_base_info;
/*
* initialize chip-specific variables
*/
dd->ipath_f_tidtemplate = ipath_ht_tidtemplate;
/*
* setup the register offsets, since they are different for each
* chip
*/
dd->ipath_kregs = &ipath_ht_kregs;
dd->ipath_cregs = &ipath_ht_cregs;
/*
* do very early init that is needed before ipath_f_bus is
* called
*/
ipath_init_ht_variables();
}
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