[IA64-SGI] Altix patch to add bricktype knowledge to tiocx

Here is a patch to enable the SGI tiocx bus driver to distingush between
FPGA-attached h/w and non-FPGA-attached h/w.

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

2 files changed, 34 insertions, 10 deletions

diff --git a/arch/ia64/sn/kernel/tiocx.c b/arch/ia64/sn/kernel/tiocx.c
index 128ccf23973a..ab9b5f35c2a7 100644
--- a/arch/ia64/sn/kernel/tiocx.c
+++ b/arch/ia64/sn/kernel/tiocx.c
@@ -21,6 +21,8 @@
 #include <asm/sn/types.h>
 #include <asm/sn/shubio.h>
 #include <asm/sn/tiocx.h>
+#include <asm/sn/l1.h>
+#include <asm/sn/module.h>
 #include "tio.h"
 #include "xtalk/xwidgetdev.h"
 #include "xtalk/hubdev.h"
@@ -308,14 +310,12 @@ void tiocx_irq_free(struct sn_irq_info *sn_irq_info)
         }
 }
 
-uint64_t
-tiocx_dma_addr(uint64_t addr)
+uint64_t tiocx_dma_addr(uint64_t addr)
 {
         return PHYS_TO_TIODMA(addr);
 }
 
-uint64_t
-tiocx_swin_base(int nasid)
+uint64_t tiocx_swin_base(int nasid)
 {
         return TIO_SWIN_BASE(nasid, TIOCX_CORELET);
 }
@@ -366,7 +366,29 @@ static void tio_corelet_reset(nasid_t nasid, int corelet)
         udelay(2000);
 }
 
-static int fpga_attached(nasid_t nasid)
+static int tiocx_btchar_get(int nasid)
+{
+        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);
+}
+
+static int is_fpga_brick(int nasid)
+{
+        switch (tiocx_btchar_get(nasid)) {
+        case L1_BRICKTYPE_SA:
+        case L1_BRICKTYPE_ATHENA:
+                return 1;
+        }
+        return 0;
+}
+
+static int bitstream_loaded(nasid_t nasid)
 {
         uint64_t cx_credits;
 
@@ -383,7 +405,7 @@ static int tiocx_reload(struct cx_dev *cx_dev)
         int mfg_num = CX_DEV_NONE;
         nasid_t nasid = cx_dev->cx_id.nasid;
 
-        if (fpga_attached(nasid)) {
+        if (bitstream_loaded(nasid)) {
                 uint64_t cx_id;
 
                 cx_id =
@@ -414,9 +436,10 @@ static ssize_t show_cxdev_control(struct device *dev, char *buf)
 {
         struct cx_dev *cx_dev = to_cx_dev(dev);
 
-        return sprintf(buf, "0x%x 0x%x 0x%x\n",
+        return sprintf(buf, "0x%x 0x%x 0x%x %d\n",
                        cx_dev->cx_id.nasid,
-                       cx_dev->cx_id.part_num, cx_dev->cx_id.mfg_num);
+                       cx_dev->cx_id.part_num, cx_dev->cx_id.mfg_num,
+                       tiocx_btchar_get(cx_dev->cx_id.nasid));
 }
 
 static ssize_t store_cxdev_control(struct device *dev, const char *buf,
@@ -462,7 +485,7 @@ static int __init tiocx_init(void)
                 if ((nasid = cnodeid_to_nasid(cnodeid)) < 0)
                         break;  /* No more nasids .. bail out of loop */
 
-                if (nasid & 0x1) {      /* TIO's are always odd */
+                if ((nasid & 0x1) && is_fpga_brick(nasid)) {
                         struct hubdev_info *hubdev;
                         struct xwidget_info *widgetp;
 
diff --git a/include/asm-ia64/sn/l1.h b/include/asm-ia64/sn/l1.h
index d5dbd55e44b5..08050d37b662 100644
--- a/include/asm-ia64/sn/l1.h
+++ b/include/asm-ia64/sn/l1.h
@@ -29,8 +29,9 @@
 #define L1_BRICKTYPE_CHI_CG     0x76            /* v */
 #define L1_BRICKTYPE_X          0x78            /* x */
 #define L1_BRICKTYPE_X2         0x79            /* y */
-#define L1_BRICKTYPE_SA         0x5e            /* ^ */ /* TIO bringup brick */
+#define L1_BRICKTYPE_SA         0x5e            /* ^ */
 #define L1_BRICKTYPE_PA         0x6a            /* j */
 #define L1_BRICKTYPE_IA         0x6b            /* k */
+#define L1_BRICKTYPE_ATHENA     0x2b            /* + */
 
 #endif /* _ASM_IA64_SN_L1_H */