[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>

diff --git a/arch/ia64/sn/kernel/tiocx.c b/arch/ia64/sn/kernel/tiocx.c
index 128ccf2..ab9b5f3 100644 (file)
--- 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 d5dbd55..08050d3 100644 (file)
--- 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 */