ipath_iba6110.c

linux内核源码

/*
 * Copyright (c) 2006, 2007 QLogic Corporation. 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 chip.
 */

#include <linux/vmalloc.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/htirq.h>

#include "ipath_kernel.h"
#include "ipath_registers.h"

static void ipath_setup_ht_setextled(struct ipath_devdata *, u64, u64);


/*
 * This lists the InfiniPath 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_write_kreg64(),
	 * use them with ipath_write_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 ((1U<<9)-1)
#define INFINIPATH_I_RCVAVAIL_MASK ((1U<<9)-1)

/* 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


/* 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
 */
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); powercycle to completely clear]",
			 !(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)));
}

/* 6110 specific hardware errors... */
static const struct ipath_hwerror_msgs ipath_6110_hwerror_msgs[] = {
	INFINIPATH_HWE_MSG(HTCBUSIREQPARITYERR, "HTC Ireq Parity"),
	INFINIPATH_HWE_MSG(HTCBUSTREQPARITYERR, "HTC Treq Parity"),
	INFINIPATH_HWE_MSG(HTCBUSTRESPPARITYERR, "HTC Tresp Parity"),
	INFINIPATH_HWE_MSG(HTCMISCERR5, "HT core Misc5"),
	INFINIPATH_HWE_MSG(HTCMISCERR6, "HT core Misc6"),
	INFINIPATH_HWE_MSG(HTCMISCERR7, "HT core Misc7"),