IB/ipath: Minor cleanup of unused fields and chip-specific errors

Clean up some unused header fields, minor related cleanup.

Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

2 files changed, 25 insertions, 59 deletions

diff --git a/drivers/infiniband/hw/ipath/ipath_iba6120.c b/drivers/infiniband/hw/ipath/ipath_iba6120.c
index 597192e912de..c7a2f50824c0 100644
--- a/drivers/infiniband/hw/ipath/ipath_iba6120.c
+++ b/drivers/infiniband/hw/ipath/ipath_iba6120.c
@@ -373,10 +373,28 @@ static const struct ipath_hwerror_msgs ipath_6120_hwerror_msgs[] = {
                         INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC) \
                         << INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT)
 
-static int ipath_pe_txe_recover(struct ipath_devdata *);
 static void ipath_pe_put_tid_2(struct ipath_devdata *, u64 __iomem *,
                                u32, unsigned long);
 
+/*
+ * On platforms using this chip, and not having ordered WC stores, we
+ * can get TXE parity errors due to speculative reads to the PIO buffers,
+ * and this, due to a chip bug can result in (many) false parity error
+ * reports.  So it's a debug print on those, and an info print on systems
+ * where the speculative reads don't occur.
+ */
+static void ipath_pe_txe_recover(struct ipath_devdata *dd)
+{
+        if (ipath_unordered_wc())
+                ipath_dbg("Recovering from TXE PIO parity error\n");
+        else {
+                ++ipath_stats.sps_txeparity;
+                dev_info(&dd->pcidev->dev,
+                        "Recovering from TXE PIO parity error\n");
+        }
+}
+
+
 /**
  * ipath_pe_handle_hwerrors - display hardware errors.
  * @dd: the infinipath device
@@ -456,35 +474,11 @@ static void ipath_pe_handle_hwerrors(struct ipath_devdata *dd, char *msg,
                  * occur if a processor speculative read is done to the PIO
                  * buffer while we are sending a packet, for example.
                  */
-                if ((hwerrs & TXE_PIO_PARITY) && ipath_pe_txe_recover(dd))
+                if (hwerrs & TXE_PIO_PARITY) {
+                        ipath_pe_txe_recover(dd);
                         hwerrs &= ~TXE_PIO_PARITY;
-                if (hwerrs) {
-                        /*
-                         * if any set that we aren't ignoring only make the
-                         * complaint once, in case it's stuck or recurring,
-                         * and we get here multiple times
-                         * Force link down, so switch knows, and
-                         * LEDs are turned off
-                         */
-                        if (dd->ipath_flags & IPATH_INITTED) {
-                                ipath_set_linkstate(dd, IPATH_IB_LINKDOWN);
-                                ipath_setup_pe_setextled(dd,
-                                        INFINIPATH_IBCS_L_STATE_DOWN,
-                                        INFINIPATH_IBCS_LT_STATE_DISABLED);
-                                ipath_dev_err(dd, "Fatal Hardware Error (freeze "
-                                              "mode), no longer usable, SN %.16s\n",
-                                                  dd->ipath_serial);
-                                isfatal = 1;
-                        }
-                        /*
-                         * Mark as having had an error for driver, and also
-                         * for /sys and status word mapped to user programs.
-                         * This marks unit as not usable, until reset
-                         */
-                        *dd->ipath_statusp &= ~IPATH_STATUS_IB_READY;
-                        *dd->ipath_statusp |= IPATH_STATUS_HWERROR;
-                        dd->ipath_flags &= ~IPATH_INITTED;
-                } else {
+                }
+                if (!hwerrs) {
                         static u32 freeze_cnt;
 
                         freeze_cnt++;
@@ -1569,33 +1563,6 @@ static void ipath_pe_read_counters(struct ipath_devdata *dd,
         cntrs->RxDlidFltrCnt = 0;
 }
 
-/*
- * On platforms using this chip, and not having ordered WC stores, we
- * can get TXE parity errors due to speculative reads to the PIO buffers,
- * and this, due to a chip bug can result in (many) false parity error
- * reports.  So it's a debug print on those, and an info print on systems
- * where the speculative reads don't occur.
- * Because we can get lots of false errors, we have no upper limit
- * on recovery attempts on those platforms.
- */
-static int ipath_pe_txe_recover(struct ipath_devdata *dd)
-{
-        if (ipath_unordered_wc())
-                ipath_dbg("Recovering from TXE PIO parity error\n");
-        else {
-                int cnt = ++ipath_stats.sps_txeparity;
-                if (cnt >= IPATH_MAX_PARITY_ATTEMPTS)  {
-                        if (cnt == IPATH_MAX_PARITY_ATTEMPTS)
-                                ipath_dev_err(dd,
-                                        "Too many attempts to recover from "
-                                        "TXE parity, giving up\n");
-                        return 0;
-                }
-                dev_info(&dd->pcidev->dev,
-                        "Recovering from TXE PIO parity error\n");
-        }
-        return 1;
-}
 
 /* no interrupt fallback for these chips */
 static int ipath_pe_nointr_fallback(struct ipath_devdata *dd)
diff --git a/drivers/infiniband/hw/ipath/ipath_kernel.h b/drivers/infiniband/hw/ipath/ipath_kernel.h
index 3da8dd79d26e..31d79e246aa0 100644
--- a/drivers/infiniband/hw/ipath/ipath_kernel.h
+++ b/drivers/infiniband/hw/ipath/ipath_kernel.h
@@ -396,14 +396,13 @@ struct ipath_devdata {
         unsigned long ipath_wc_len;
         /* ref count for each pkey */
         atomic_t ipath_pkeyrefs[4];
-        /* shadow copy of all exptids physaddr; used only by funcsim */
-        u64 *ipath_tidsimshadow;
         /* shadow copy of struct page *'s for exp tid pages */
         struct page **ipath_pageshadow;
         /* shadow copy of dma handles for exp tid pages */
         dma_addr_t *ipath_physshadow;
         u64 __iomem *ipath_egrtidbase;
-        /* lock to workaround chip bug 9437 */
+        /* lock to workaround chip bug 9437 and others */
+        spinlock_t ipath_kernel_tid_lock;
         spinlock_t ipath_tid_lock;
         spinlock_t ipath_sendctrl_lock;