Merge branch 'linus' into cont_syslog
[safe/jmp/linux-2.6] / drivers / infiniband / hw / ipath / ipath_iba6110.c
index 34d159a..1d7aea1 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006 QLogic, Inc. All rights reserved.
+ * 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
@@ -40,6 +40,7 @@
 #include <linux/pci.h>
 #include <linux/delay.h>
 #include <linux/htirq.h>
+#include <rdma/ib_verbs.h>
 
 #include "ipath_kernel.h"
 #include "ipath_registers.h"
@@ -148,10 +149,57 @@ struct _infinipath_do_not_use_kernel_regs {
        unsigned long long ReservedSW2[4];
 };
 
-#define IPATH_KREG_OFFSET(field) (offsetof(struct \
-    _infinipath_do_not_use_kernel_regs, field) / sizeof(u64))
+struct _infinipath_do_not_use_counters {
+       __u64 LBIntCnt;
+       __u64 LBFlowStallCnt;
+       __u64 Reserved1;
+       __u64 TxUnsupVLErrCnt;
+       __u64 TxDataPktCnt;
+       __u64 TxFlowPktCnt;
+       __u64 TxDwordCnt;
+       __u64 TxLenErrCnt;
+       __u64 TxMaxMinLenErrCnt;
+       __u64 TxUnderrunCnt;
+       __u64 TxFlowStallCnt;
+       __u64 TxDroppedPktCnt;
+       __u64 RxDroppedPktCnt;
+       __u64 RxDataPktCnt;
+       __u64 RxFlowPktCnt;
+       __u64 RxDwordCnt;
+       __u64 RxLenErrCnt;
+       __u64 RxMaxMinLenErrCnt;
+       __u64 RxICRCErrCnt;
+       __u64 RxVCRCErrCnt;
+       __u64 RxFlowCtrlErrCnt;
+       __u64 RxBadFormatCnt;
+       __u64 RxLinkProblemCnt;
+       __u64 RxEBPCnt;
+       __u64 RxLPCRCErrCnt;
+       __u64 RxBufOvflCnt;
+       __u64 RxTIDFullErrCnt;
+       __u64 RxTIDValidErrCnt;
+       __u64 RxPKeyMismatchCnt;
+       __u64 RxP0HdrEgrOvflCnt;
+       __u64 RxP1HdrEgrOvflCnt;
+       __u64 RxP2HdrEgrOvflCnt;
+       __u64 RxP3HdrEgrOvflCnt;
+       __u64 RxP4HdrEgrOvflCnt;
+       __u64 RxP5HdrEgrOvflCnt;
+       __u64 RxP6HdrEgrOvflCnt;
+       __u64 RxP7HdrEgrOvflCnt;
+       __u64 RxP8HdrEgrOvflCnt;
+       __u64 Reserved6;
+       __u64 Reserved7;
+       __u64 IBStatusChangeCnt;
+       __u64 IBLinkErrRecoveryCnt;
+       __u64 IBLinkDownedCnt;
+       __u64 IBSymbolErrCnt;
+};
+
+#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))
+       struct _infinipath_do_not_use_counters, field) / sizeof(u64))
 
 static const struct ipath_kregs ipath_ht_kregs = {
        .kr_control = IPATH_KREG_OFFSET(Control),
@@ -258,7 +306,9 @@ static const struct ipath_cregs ipath_ht_cregs = {
 
 /* kr_intstatus, kr_intclear, kr_intmask bits */
 #define INFINIPATH_I_RCVURG_MASK ((1U<<9)-1)
+#define INFINIPATH_I_RCVURG_SHIFT 0
 #define INFINIPATH_I_RCVAVAIL_MASK ((1U<<9)-1)
+#define INFINIPATH_I_RCVAVAIL_SHIFT 12
 
 /* kr_hwerrclear, kr_hwerrmask, kr_hwerrstatus, bits */
 #define INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT 0
@@ -282,6 +332,9 @@ static const struct ipath_cregs ipath_ht_cregs = {
 #define INFINIPATH_HWE_HTAPLL_RFSLIP        0x1000000000000000ULL
 #define INFINIPATH_HWE_SERDESPLLFAILED      0x2000000000000000ULL
 
+#define IBA6110_IBCS_LINKTRAININGSTATE_MASK 0xf
+#define IBA6110_IBCS_LINKSTATE_SHIFT 4
+
 /* kr_extstatus bits */
 #define INFINIPATH_EXTS_FREQSEL 0x2
 #define INFINIPATH_EXTS_SERDESSEL 0x4
@@ -296,6 +349,12 @@ static const struct ipath_cregs ipath_ht_cregs = {
 #define INFINIPATH_RT_BUFSIZE_MASK 0x3FFFULL
 #define INFINIPATH_RT_BUFSIZE_SHIFT 48
 
+#define INFINIPATH_R_INTRAVAIL_SHIFT 16
+#define INFINIPATH_R_TAILUPD_SHIFT 31
+
+/* kr_xgxsconfig bits */
+#define INFINIPATH_XGXS_RESET          0x7ULL
+
 /*
  * masks and bits that are different in different chips, or present only
  * in one
@@ -322,7 +381,7 @@ static const ipath_err_t infinipath_hwe_htclnkbbyte1crcerr =
 #define IPATH_GPIO_SCL \
        (1ULL << (_IPATH_GPIO_SCL_NUM+INFINIPATH_EXTC_GPIOOE_SHIFT))
 
-/* keep the code below somewhat more readonable; not used elsewhere */
+/* keep the code below somewhat more readable; not used elsewhere */
 #define _IPATH_HTLINK0_CRCBITS (infinipath_hwe_htclnkabyte0crcerr |    \
                                infinipath_hwe_htclnkabyte1crcerr)
 #define _IPATH_HTLINK1_CRCBITS (infinipath_hwe_htclnkbbyte0crcerr |    \
@@ -420,7 +479,13 @@ static const struct ipath_hwerror_msgs ipath_6110_hwerror_msgs[] = {
 #define RXE_EAGER_PARITY (INFINIPATH_HWE_RXEMEMPARITYERR_EAGERTID \
                          << INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT)
 
-static int ipath_ht_txe_recover(struct ipath_devdata *);
+static void ipath_ht_txe_recover(struct ipath_devdata *dd)
+{
+       ++ipath_stats.sps_txeparity;
+       dev_info(&dd->pcidev->dev,
+               "Recovering from TXE PIO parity error\n");
+}
+
 
 /**
  * ipath_ht_handle_hwerrors - display hardware errors.
@@ -501,24 +566,15 @@ 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 & TXE_PIO_PARITY) && ipath_ht_txe_recover(dd))
+               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");
-                       /*
-                        * clear all sends, becauase they have may been
-                        * completed by usercode while in freeze mode, and
-                        * therefore would not be sent, and eventually
-                        * might cause the process to run out of bufs
-                        */
-                       ipath_cancel_sends(dd);
-                       ctrl &= ~INFINIPATH_C_FREEZEMODE;
-                       ipath_write_kreg(dd, dd->ipath_kregs->kr_control,
-                                        ctrl);
+                       ipath_clear_freeze(dd);
                }
        }
 
@@ -640,42 +696,22 @@ static int ipath_ht_boardname(struct ipath_devdata *dd, char *name,
 {
        char *n = NULL;
        u8 boardrev = dd->ipath_boardrev;
-       int ret;
+       int ret = 0;
 
        switch (boardrev) {
-       case 4:         /* Ponderosa is one of the bringup boards */
-               n = "Ponderosa";
-               break;
        case 5:
                /*
                 * 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.
+                * Original 112* serial number is no longer supported.
                 */
                n = "InfiniPath_QHT7040";
                break;
-       case 6:
-               n = "OEM_Board_3";
-               break;
        case 7:
                /* small form factor production board */
                n = "InfiniPath_QHT7140";
                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"; /* obsoleted */
-               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);
@@ -686,6 +722,10 @@ static int ipath_ht_boardname(struct ipath_devdata *dd, char *name,
        if (n)
                snprintf(name, namelen, "%s", n);
 
+       if (ret) {
+               ipath_dev_err(dd, "Unsupported InfiniPath board %s!\n", name);
+               goto bail;
+       }
        if (dd->ipath_majrev != 3 || (dd->ipath_minrev < 2 ||
                dd->ipath_minrev > 4)) {
                /*
@@ -703,37 +743,18 @@ static int ipath_ht_boardname(struct ipath_devdata *dd, char *name,
         * copies
         */
        dd->ipath_flags |= IPATH_32BITCOUNTERS;
-       if (dd->ipath_htspeed != 800)
+       dd->ipath_flags |= IPATH_GPIO_INTR;
+       if (dd->ipath_lbus_speed != 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;
+                             dd->ipath_lbus_speed);
+
+       /*
+        * set here, not in ipath_init_*_funcs because we have to do
+        * it after we can read chip registers.
+        */
+       dd->ipath_ureg_align =
+               ipath_read_kreg32(dd, dd->ipath_kregs->kr_pagealign);
 
 bail:
        return ret;
@@ -788,7 +809,7 @@ static int ipath_setup_ht_reset(struct ipath_devdata *dd)
  * 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
+ * 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,
@@ -826,7 +847,7 @@ static void slave_or_pri_blk(struct ipath_devdata *dd, struct pci_dev *pdev,
                        /*
                         * now write them back to clear the error.
                         */
-                       pci_write_config_byte(pdev, link_off,
+                       pci_write_config_word(pdev, link_off,
                                              linkctrl & (0xf << 8));
                }
        }
@@ -891,7 +912,7 @@ static void slave_or_pri_blk(struct ipath_devdata *dd, struct pci_dev *pdev,
                        break;
                }
 
-               dd->ipath_htwidth = width;
+               dd->ipath_lbus_width = width;
 
                if (linkwidth != 0x11) {
                        ipath_dev_err(dd, "Not configured for 16 bit HT "
@@ -939,8 +960,13 @@ static void slave_or_pri_blk(struct ipath_devdata *dd, struct pci_dev *pdev,
                        speed = 200;
                        break;
                }
-               dd->ipath_htspeed = speed;
+               dd->ipath_lbus_speed = speed;
        }
+
+       snprintf(dd->ipath_lbus_info, sizeof(dd->ipath_lbus_info),
+               "HyperTransport,%uMHz,x%u\n",
+               dd->ipath_lbus_speed,
+               dd->ipath_lbus_width);
 }
 
 static int ipath_ht_intconfig(struct ipath_devdata *dd)
@@ -1018,7 +1044,8 @@ static int ipath_setup_ht_config(struct ipath_devdata *dd,
        do {
                u8 cap_type;
 
-               /* the HT capability type byte is 3 bytes after the
+               /*
+                * The HT capability type byte is 3 bytes after the
                 * capability byte.
                 */
                if (pci_read_config_byte(pdev, pos + 3, &cap_type)) {
@@ -1031,6 +1058,8 @@ static int ipath_setup_ht_config(struct ipath_devdata *dd,
        } while ((pos = pci_find_next_capability(pdev, pos,
                                                 PCI_CAP_ID_HT)));
 
+       dd->ipath_flags |= IPATH_SWAP_PIOBUFS;
+
 bail:
        return ret;
 }
@@ -1123,11 +1152,55 @@ static void ipath_setup_ht_setextled(struct ipath_devdata *dd,
 
 static void ipath_init_ht_variables(struct ipath_devdata *dd)
 {
+       /*
+        * setup the register offsets, since they are different for each
+        * chip
+        */
+       dd->ipath_kregs = &ipath_ht_kregs;
+       dd->ipath_cregs = &ipath_ht_cregs;
+
        dd->ipath_gpio_sda_num = _IPATH_GPIO_SDA_NUM;
        dd->ipath_gpio_scl_num = _IPATH_GPIO_SCL_NUM;
        dd->ipath_gpio_sda = IPATH_GPIO_SDA;
        dd->ipath_gpio_scl = IPATH_GPIO_SCL;
 
+       /*
+        * Fill in data for field-values that change in newer chips.
+        * We dynamically specify only the mask for LINKTRAININGSTATE
+        * and only the shift for LINKSTATE, as they are the only ones
+        * that change.  Also precalculate the 3 link states of interest
+        * and the combined mask.
+        */
+       dd->ibcs_ls_shift = IBA6110_IBCS_LINKSTATE_SHIFT;
+       dd->ibcs_lts_mask = IBA6110_IBCS_LINKTRAININGSTATE_MASK;
+       dd->ibcs_mask = (INFINIPATH_IBCS_LINKSTATE_MASK <<
+               dd->ibcs_ls_shift) | dd->ibcs_lts_mask;
+       dd->ib_init = (INFINIPATH_IBCS_LT_STATE_LINKUP <<
+               INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) |
+               (INFINIPATH_IBCS_L_STATE_INIT << dd->ibcs_ls_shift);
+       dd->ib_arm = (INFINIPATH_IBCS_LT_STATE_LINKUP <<
+               INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) |
+               (INFINIPATH_IBCS_L_STATE_ARM << dd->ibcs_ls_shift);
+       dd->ib_active = (INFINIPATH_IBCS_LT_STATE_LINKUP <<
+               INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) |
+               (INFINIPATH_IBCS_L_STATE_ACTIVE << dd->ibcs_ls_shift);
+
+       /*
+        * Fill in data for ibcc field-values that change in newer chips.
+        * We dynamically specify only the mask for LINKINITCMD
+        * and only the shift for LINKCMD and MAXPKTLEN, as they are
+        * the only ones that change.
+        */
+       dd->ibcc_lic_mask = INFINIPATH_IBCC_LINKINITCMD_MASK;
+       dd->ibcc_lc_shift = INFINIPATH_IBCC_LINKCMD_SHIFT;
+       dd->ibcc_mpl_shift = INFINIPATH_IBCC_MAXPKTLEN_SHIFT;
+
+       /* Fill in shifts for RcvCtrl. */
+       dd->ipath_r_portenable_shift = INFINIPATH_R_PORTENABLE_SHIFT;
+       dd->ipath_r_intravail_shift = INFINIPATH_R_INTRAVAIL_SHIFT;
+       dd->ipath_r_tailupd_shift = INFINIPATH_R_TAILUPD_SHIFT;
+       dd->ipath_r_portcfg_shift = 0; /* Not on IBA6110 */
+
        dd->ipath_i_bitsextant =
                (INFINIPATH_I_RCVURG_MASK << INFINIPATH_I_RCVURG_SHIFT) |
                (INFINIPATH_I_RCVAVAIL_MASK <<
@@ -1184,6 +1257,8 @@ static void ipath_init_ht_variables(struct ipath_devdata *dd)
 
        dd->ipath_i_rcvavail_mask = INFINIPATH_I_RCVAVAIL_MASK;
        dd->ipath_i_rcvurg_mask = INFINIPATH_I_RCVURG_MASK;
+       dd->ipath_i_rcvavail_shift = INFINIPATH_I_RCVAVAIL_SHIFT;
+       dd->ipath_i_rcvurg_shift = INFINIPATH_I_RCVURG_SHIFT;
 
        /*
         * EEPROM error log 0 is TXE Parity errors. 1 is RXE Parity.
@@ -1197,9 +1272,17 @@ static void ipath_init_ht_variables(struct ipath_devdata *dd)
                INFINIPATH_HWE_RXEMEMPARITYERR_MASK <<
                INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT;
 
-       dd->ipath_eep_st_masks[2].errs_to_log =
-               INFINIPATH_E_INVALIDADDR | INFINIPATH_E_RESET;
+       dd->ipath_eep_st_masks[2].errs_to_log = INFINIPATH_E_RESET;
+
+       dd->delay_mult = 2; /* SDR, 4X, can't change */
 
+       dd->ipath_link_width_supported = IB_WIDTH_1X | IB_WIDTH_4X;
+       dd->ipath_link_speed_supported = IPATH_IB_SDR;
+       dd->ipath_link_width_enabled = IB_WIDTH_4X;
+       dd->ipath_link_speed_enabled = dd->ipath_link_speed_supported;
+       /* these can't change for this chip, so set once */
+       dd->ipath_link_width_active = dd->ipath_link_width_enabled;
+       dd->ipath_link_speed_active = dd->ipath_link_speed_enabled;
 }
 
 /**
@@ -1254,14 +1337,16 @@ static void ipath_ht_init_hwerrors(struct ipath_devdata *dd)
        val &= ~INFINIPATH_HWE_HTCMISCERR4;
 
        /*
-        * PLL ignored because MDIO interface has a logic problem
-        * for reads, on Comstock and Ponderosa.  BRINGUP
+        * PLL ignored because unused MDIO interface has a logic problem
         */
        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
@@ -1333,16 +1418,6 @@ static int ipath_ht_bringup_serdes(struct ipath_devdata *dd)
        }
 
        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;
@@ -1378,21 +1453,6 @@ static int ipath_ht_bringup_serdes(struct ipath_devdata *dd)
                   (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 */
 }
 
@@ -1414,7 +1474,7 @@ static void ipath_ht_quiet_serdes(struct ipath_devdata *dd)
 /**
  * ipath_pe_put_tid - write a TID in chip
  * @dd: the infinipath device
- * @tidptr: pointer to the expected TID (in chip) to udpate
+ * @tidptr: pointer to the expected TID (in chip) to update
  * @tidtype: RCVHQ_RCV_TYPE_EAGER (1) for eager, RCVHQ_RCV_TYPE_EXPECTED (0) for expected
  * @pa: physical address of in memory buffer; ipath_tidinvalid if freeing
  *
@@ -1445,6 +1505,7 @@ static void ipath_ht_put_tid(struct ipath_devdata *dd,
                        pa |= lenvalid | INFINIPATH_RT_VALID;
                }
        }
+
        writeq(pa, tidptr);
 }
 
@@ -1575,33 +1636,33 @@ static int ipath_ht_early_init(struct ipath_devdata *dd)
        }
 
        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') {
+       if (dd->ipath_boardrev == 5) {
                /*
                 * Later production QHT7040 has same changes as QHT7140, 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;
+               if (dd->ipath_serial[0] == '1' &&
+                   dd->ipath_serial[1] == '2' &&
+                   dd->ipath_serial[2] == '8')
+                       dd->ipath_flags |= IPATH_GPIO_INTR;
+               else {
+                       ipath_dev_err(dd, "Unsupported InfiniPath board "
+                               "(serial number %.16s)!\n",
+                               dd->ipath_serial);
+                       return 1;
+               }
        }
-       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;
+       if (dd->ipath_minrev >= 4) {
+               /* Rev4+ reports extra errors via internal GPIO pins */
+               dd->ipath_flags |= IPATH_GPIO_ERRINTRS;
+               dd->ipath_gpio_mask |= IPATH_GPIO_ERRINTR_MASK;
+               ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_mask,
+                                dd->ipath_gpio_mask);
        }
-       dev_info(&dd->pcidev->dev,
-               "Recovering from TXE PIO parity error\n");
-       return 1;
+
+       return 0;
 }
 
 
@@ -1618,7 +1679,10 @@ 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;
+               IPATH_RUNTIME_PIO_REGSWAPPED;
+
+       if (pd->port_dd->ipath_minrev < 4)
+               kinfo->spi_runtime_flags |= IPATH_RUNTIME_RCVHDR_COPY;
 
        return 0;
 }
@@ -1631,6 +1695,210 @@ static void ipath_ht_free_irq(struct ipath_devdata *dd)
        dd->ipath_intconfig = 0;
 }
 
+static struct ipath_message_header *
+ipath_ht_get_msgheader(struct ipath_devdata *dd, __le32 *rhf_addr)
+{
+       return (struct ipath_message_header *)
+               &rhf_addr[sizeof(u64) / sizeof(u32)];
+}
+
+static void ipath_ht_config_ports(struct ipath_devdata *dd, ushort cfgports)
+{
+       dd->ipath_portcnt =
+               ipath_read_kreg32(dd, dd->ipath_kregs->kr_portcnt);
+       dd->ipath_p0_rcvegrcnt =
+               ipath_read_kreg32(dd, dd->ipath_kregs->kr_rcvegrcnt);
+}
+
+static void ipath_ht_read_counters(struct ipath_devdata *dd,
+                                  struct infinipath_counters *cntrs)
+{
+       cntrs->LBIntCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(LBIntCnt));
+       cntrs->LBFlowStallCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(LBFlowStallCnt));
+       cntrs->TxSDmaDescCnt = 0;
+       cntrs->TxUnsupVLErrCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxUnsupVLErrCnt));
+       cntrs->TxDataPktCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxDataPktCnt));
+       cntrs->TxFlowPktCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxFlowPktCnt));
+       cntrs->TxDwordCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxDwordCnt));
+       cntrs->TxLenErrCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxLenErrCnt));
+       cntrs->TxMaxMinLenErrCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxMaxMinLenErrCnt));
+       cntrs->TxUnderrunCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxUnderrunCnt));
+       cntrs->TxFlowStallCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxFlowStallCnt));
+       cntrs->TxDroppedPktCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxDroppedPktCnt));
+       cntrs->RxDroppedPktCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxDroppedPktCnt));
+       cntrs->RxDataPktCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxDataPktCnt));
+       cntrs->RxFlowPktCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxFlowPktCnt));
+       cntrs->RxDwordCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxDwordCnt));
+       cntrs->RxLenErrCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxLenErrCnt));
+       cntrs->RxMaxMinLenErrCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxMaxMinLenErrCnt));
+       cntrs->RxICRCErrCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxICRCErrCnt));
+       cntrs->RxVCRCErrCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxVCRCErrCnt));
+       cntrs->RxFlowCtrlErrCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxFlowCtrlErrCnt));
+       cntrs->RxBadFormatCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxBadFormatCnt));
+       cntrs->RxLinkProblemCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxLinkProblemCnt));
+       cntrs->RxEBPCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxEBPCnt));
+       cntrs->RxLPCRCErrCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxLPCRCErrCnt));
+       cntrs->RxBufOvflCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxBufOvflCnt));
+       cntrs->RxTIDFullErrCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxTIDFullErrCnt));
+       cntrs->RxTIDValidErrCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxTIDValidErrCnt));
+       cntrs->RxPKeyMismatchCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxPKeyMismatchCnt));
+       cntrs->RxP0HdrEgrOvflCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP0HdrEgrOvflCnt));
+       cntrs->RxP1HdrEgrOvflCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP1HdrEgrOvflCnt));
+       cntrs->RxP2HdrEgrOvflCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP2HdrEgrOvflCnt));
+       cntrs->RxP3HdrEgrOvflCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP3HdrEgrOvflCnt));
+       cntrs->RxP4HdrEgrOvflCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP4HdrEgrOvflCnt));
+       cntrs->RxP5HdrEgrOvflCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP5HdrEgrOvflCnt));
+       cntrs->RxP6HdrEgrOvflCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP6HdrEgrOvflCnt));
+       cntrs->RxP7HdrEgrOvflCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP7HdrEgrOvflCnt));
+       cntrs->RxP8HdrEgrOvflCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP8HdrEgrOvflCnt));
+       cntrs->RxP9HdrEgrOvflCnt = 0;
+       cntrs->RxP10HdrEgrOvflCnt = 0;
+       cntrs->RxP11HdrEgrOvflCnt = 0;
+       cntrs->RxP12HdrEgrOvflCnt = 0;
+       cntrs->RxP13HdrEgrOvflCnt = 0;
+       cntrs->RxP14HdrEgrOvflCnt = 0;
+       cntrs->RxP15HdrEgrOvflCnt = 0;
+       cntrs->RxP16HdrEgrOvflCnt = 0;
+       cntrs->IBStatusChangeCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(IBStatusChangeCnt));
+       cntrs->IBLinkErrRecoveryCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(IBLinkErrRecoveryCnt));
+       cntrs->IBLinkDownedCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(IBLinkDownedCnt));
+       cntrs->IBSymbolErrCnt =
+               ipath_snap_cntr(dd, IPATH_CREG_OFFSET(IBSymbolErrCnt));
+       cntrs->RxVL15DroppedPktCnt = 0;
+       cntrs->RxOtherLocalPhyErrCnt = 0;
+       cntrs->PcieRetryBufDiagQwordCnt = 0;
+       cntrs->ExcessBufferOvflCnt = dd->ipath_overrun_thresh_errs;
+       cntrs->LocalLinkIntegrityErrCnt =
+               (dd->ipath_flags & IPATH_GPIO_ERRINTRS) ?
+               dd->ipath_lli_errs : dd->ipath_lli_errors;
+       cntrs->RxVlErrCnt = 0;
+       cntrs->RxDlidFltrCnt = 0;
+}
+
+
+/* no interrupt fallback for these chips */
+static int ipath_ht_nointr_fallback(struct ipath_devdata *dd)
+{
+       return 0;
+}
+
+
+/*
+ * reset the XGXS (between serdes and IBC).  Slightly less intrusive
+ * than resetting the IBC or external link state, and useful in some
+ * cases to cause some retraining.  To do this right, we reset IBC
+ * as well.
+ */
+static void ipath_ht_xgxs_reset(struct ipath_devdata *dd)
+{
+       u64 val, prev_val;
+
+       prev_val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig);
+       val = prev_val | INFINIPATH_XGXS_RESET;
+       prev_val &= ~INFINIPATH_XGXS_RESET; /* be sure */
+       ipath_write_kreg(dd, dd->ipath_kregs->kr_control,
+                        dd->ipath_control & ~INFINIPATH_C_LINKENABLE);
+       ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val);
+       ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch);
+       ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, prev_val);
+       ipath_write_kreg(dd, dd->ipath_kregs->kr_control,
+                        dd->ipath_control);
+}
+
+
+static int ipath_ht_get_ib_cfg(struct ipath_devdata *dd, int which)
+{
+       int ret;
+
+       switch (which) {
+       case IPATH_IB_CFG_LWID:
+               ret = dd->ipath_link_width_active;
+               break;
+       case IPATH_IB_CFG_SPD:
+               ret = dd->ipath_link_speed_active;
+               break;
+       case IPATH_IB_CFG_LWID_ENB:
+               ret = dd->ipath_link_width_enabled;
+               break;
+       case IPATH_IB_CFG_SPD_ENB:
+               ret = dd->ipath_link_speed_enabled;
+               break;
+       default:
+               ret =  -ENOTSUPP;
+               break;
+       }
+       return ret;
+}
+
+
+/* we assume range checking is already done, if needed */
+static int ipath_ht_set_ib_cfg(struct ipath_devdata *dd, int which, u32 val)
+{
+       int ret = 0;
+
+       if (which == IPATH_IB_CFG_LWID_ENB)
+               dd->ipath_link_width_enabled = val;
+       else if (which == IPATH_IB_CFG_SPD_ENB)
+               dd->ipath_link_speed_enabled = val;
+       else
+               ret = -ENOTSUPP;
+       return ret;
+}
+
+
+static void ipath_ht_config_jint(struct ipath_devdata *dd, u16 a, u16 b)
+{
+}
+
+
+static int ipath_ht_ib_updown(struct ipath_devdata *dd, int ibup, u64 ibcs)
+{
+       ipath_setup_ht_setextled(dd, ipath_ib_linkstate(dd, ibcs),
+               ipath_ib_linktrstate(dd, ibcs));
+       return 0;
+}
+
+
 /**
  * ipath_init_iba6110_funcs - set up the chip-specific function pointers
  * @dd: the infinipath device
@@ -1655,22 +1923,19 @@ void ipath_init_iba6110_funcs(struct ipath_devdata *dd)
        dd->ipath_f_setextled = ipath_setup_ht_setextled;
        dd->ipath_f_get_base_info = ipath_ht_get_base_info;
        dd->ipath_f_free_irq = ipath_ht_free_irq;
-
-       /*
-        * initialize chip-specific variables
-        */
        dd->ipath_f_tidtemplate = ipath_ht_tidtemplate;
+       dd->ipath_f_intr_fallback = ipath_ht_nointr_fallback;
+       dd->ipath_f_get_msgheader = ipath_ht_get_msgheader;
+       dd->ipath_f_config_ports = ipath_ht_config_ports;
+       dd->ipath_f_read_counters = ipath_ht_read_counters;
+       dd->ipath_f_xgxs_reset = ipath_ht_xgxs_reset;
+       dd->ipath_f_get_ib_cfg = ipath_ht_get_ib_cfg;
+       dd->ipath_f_set_ib_cfg = ipath_ht_set_ib_cfg;
+       dd->ipath_f_config_jint = ipath_ht_config_jint;
+       dd->ipath_f_ib_updown = ipath_ht_ib_updown;
 
        /*
-        * 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
+        * initialize chip-specific variables
         */
        ipath_init_ht_variables(dd);
 }