[IA64] Altix patch for fpga reset

1) workaround a h/w reset issue
2) to improve the determination of FPGA-based h/w in
   the arch/ia64/sn/kernel/tiocx code.

Signed-off-by: Bruce Losure <blosure@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 33 insertions, 29 deletions

diff --git a/arch/ia64/sn/kernel/tiocx.c b/arch/ia64/sn/kernel/tiocx.c
index 254fe15c064b..d8664715764b 100644
--- a/arch/ia64/sn/kernel/tiocx.c
+++ b/arch/ia64/sn/kernel/tiocx.c
@@ -183,11 +183,12 @@ int cx_driver_unregister(struct cx_drv *cx_driver)
  * @part_num: device's part number
  * @mfg_num: device's manufacturer number
  * @hubdev: hub info associated with this device
+ * @bt: board type of the device
  *
  */
 int
 cx_device_register(nasid_t nasid, int part_num, int mfg_num,
-                   struct hubdev_info *hubdev)
+                   struct hubdev_info *hubdev, int bt)
 {
         struct cx_dev *cx_dev;
 
@@ -200,6 +201,7 @@ cx_device_register(nasid_t nasid, int part_num, int mfg_num,
         cx_dev->cx_id.mfg_num = mfg_num;
         cx_dev->cx_id.nasid = nasid;
         cx_dev->hubdev = hubdev;
+        cx_dev->bt = bt;
 
         cx_dev->dev.parent = NULL;
         cx_dev->dev.bus = &tiocx_bus_type;
@@ -238,7 +240,8 @@ static int cx_device_reload(struct cx_dev *cx_dev)
 {
         cx_device_unregister(cx_dev);
         return cx_device_register(cx_dev->cx_id.nasid, cx_dev->cx_id.part_num,
-                                  cx_dev->cx_id.mfg_num, cx_dev->hubdev);
+                                  cx_dev->cx_id.mfg_num, cx_dev->hubdev,
+                                  cx_dev->bt);
 }
 
 static inline uint64_t tiocx_intr_alloc(nasid_t nasid, int widget,
@@ -365,26 +368,20 @@ static void tio_corelet_reset(nasid_t nasid, int corelet)
         udelay(2000);
 }
 
-static int tiocx_btchar_get(int nasid)
+static int is_fpga_tio(int nasid, int *bt)
 {
-        moduleid_t module_id;
-        geoid_t geoid;
-        int cnodeid;
-
-        cnodeid = nasid_to_cnodeid(nasid);
-        geoid = cnodeid_get_geoid(cnodeid);
-        module_id = geo_module(geoid);
-        return MODULE_GET_BTCHAR(module_id);
-}
+        int ioboard_type;
 
-static int is_fpga_brick(int nasid)
-{
-        switch (tiocx_btchar_get(nasid)) {
+        ioboard_type = ia64_sn_sysctl_ioboard_get(nasid);
+
+        switch (ioboard_type) {
         case L1_BRICKTYPE_SA:
         case L1_BRICKTYPE_ATHENA:
-        case L1_BRICKTYPE_DAYTONA:
+        case L1_BOARDTYPE_DAYTONA:
+                *bt = ioboard_type;
                 return 1;
         }
+
         return 0;
 }
 
@@ -407,16 +404,22 @@ static int tiocx_reload(struct cx_dev *cx_dev)
 
         if (bitstream_loaded(nasid)) {
                 uint64_t cx_id;
-
-                cx_id =
-                    *(volatile uint64_t *)(TIO_SWIN_BASE(nasid, TIOCX_CORELET) +
+                int rv;
+
+                rv = ia64_sn_sysctl_tio_clock_reset(nasid);
+                if (rv) {
+                        printk(KERN_ALERT "CX port JTAG reset failed.\n");
+                } else {
+                        cx_id = *(volatile uint64_t *)
+                                (TIO_SWIN_BASE(nasid, TIOCX_CORELET) +
                                           WIDGET_ID);
-                part_num = XWIDGET_PART_NUM(cx_id);
-                mfg_num = XWIDGET_MFG_NUM(cx_id);
-                DBG("part= 0x%x, mfg= 0x%x\n", part_num, mfg_num);
-                /* just ignore it if it's a CE */
-                if (part_num == TIO_CE_ASIC_PARTNUM)
-                        return 0;
+                        part_num = XWIDGET_PART_NUM(cx_id);
+                        mfg_num = XWIDGET_MFG_NUM(cx_id);
+                        DBG("part= 0x%x, mfg= 0x%x\n", part_num, mfg_num);
+                        /* just ignore it if it's a CE */
+                        if (part_num == TIO_CE_ASIC_PARTNUM)
+                                return 0;
+                }
         }
 
         cx_dev->cx_id.part_num = part_num;
@@ -436,10 +439,10 @@ static ssize_t show_cxdev_control(struct device *dev, struct device_attribute *a
 {
         struct cx_dev *cx_dev = to_cx_dev(dev);
 
-        return sprintf(buf, "0x%x 0x%x 0x%x %d\n",
+        return sprintf(buf, "0x%x 0x%x 0x%x 0x%x\n",
                        cx_dev->cx_id.nasid,
                        cx_dev->cx_id.part_num, cx_dev->cx_id.mfg_num,
-                       tiocx_btchar_get(cx_dev->cx_id.nasid));
+                       cx_dev->bt);
 }
 
 static ssize_t store_cxdev_control(struct device *dev, struct device_attribute *attr, const char *buf,
@@ -488,11 +491,12 @@ static int __init tiocx_init(void)
 
         for (cnodeid = 0; cnodeid < MAX_COMPACT_NODES; cnodeid++) {
                 nasid_t nasid;
+                int bt;
 
                 if ((nasid = cnodeid_to_nasid(cnodeid)) < 0)
                         break;  /* No more nasids .. bail out of loop */
 
-                if ((nasid & 0x1) && is_fpga_brick(nasid)) {
+                if ((nasid & 0x1) && is_fpga_tio(nasid, &bt)) {
                         struct hubdev_info *hubdev;
                         struct xwidget_info *widgetp;
 
@@ -512,7 +516,7 @@ static int __init tiocx_init(void)
 
                         if (cx_device_register
                             (nasid, widgetp->xwi_hwid.part_num,
-                             widgetp->xwi_hwid.mfg_num, hubdev) < 0)
+                             widgetp->xwi_hwid.mfg_num, hubdev, bt) < 0)
                                 return -ENXIO;
                         else
                                 found_tiocx_device++;