sgi-xp: create a common xp_remote_memcpy() function

Create a common remote memcpy function that maps to what the hardware
booted supports.

Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 24 insertions, 31 deletions

diff --git a/drivers/misc/sgi-xp/xpc_partition.c b/drivers/misc/sgi-xp/xpc_partition.c
index 02a858eddd8d..6c82f2050974 100644
--- a/drivers/misc/sgi-xp/xpc_partition.c
+++ b/drivers/misc/sgi-xp/xpc_partition.c
@@ -21,7 +21,6 @@
 #include <linux/mmzone.h>
 #include <linux/nodemask.h>
 #include <asm/uncached.h>
-#include <asm/sn/bte.h>
 #include <asm/sn/intr.h>
 #include <asm/sn/sn_sal.h>
 #include <asm/sn/nodepda.h>
@@ -92,7 +91,7 @@ xpc_kmalloc_cacheline_aligned(size_t size, gfp_t flags, void **base)
 static u64
 xpc_get_rsvd_page_pa(int nasid)
 {
-        bte_result_t bte_res;
+        enum xp_retval ret;
         s64 status;
         u64 cookie = 0;
         u64 rp_pa = nasid;      /* seed with nasid */
@@ -113,6 +112,7 @@ xpc_get_rsvd_page_pa(int nasid)
                 if (status != SALRET_MORE_PASSES)
                         break;
 
+                /* >>> L1_CACHE_ALIGN() is only a sn2-bte_copy requirement */
                 if (L1_CACHE_ALIGN(len) > buf_len) {
                         kfree(buf_base);
                         buf_len = L1_CACHE_ALIGN(len);
@@ -127,10 +127,9 @@ xpc_get_rsvd_page_pa(int nasid)
                         }
                 }
 
-                bte_res = xp_bte_copy(rp_pa, buf, buf_len,
-                                      (BTE_NOTIFY | BTE_WACQUIRE), NULL);
-                if (bte_res != BTE_SUCCESS) {
-                        dev_dbg(xpc_part, "xp_bte_copy failed %i\n", bte_res);
+                ret = xp_remote_memcpy((void *)buf, (void *)rp_pa, buf_len);
+                if (ret != xpSuccess) {
+                        dev_dbg(xpc_part, "xp_remote_memcpy failed %d\n", ret);
                         status = SALRET_ERROR;
                         break;
                 }
@@ -398,7 +397,7 @@ xpc_check_remote_hb(void)
         struct xpc_vars *remote_vars;
         struct xpc_partition *part;
         short partid;
-        bte_result_t bres;
+        enum xp_retval ret;
 
         remote_vars = (struct xpc_vars *)xpc_remote_copy_buffer;
 
@@ -418,13 +417,11 @@ xpc_check_remote_hb(void)
                 }
 
                 /* pull the remote_hb cache line */
-                bres = xp_bte_copy(part->remote_vars_pa,
-                                   (u64)remote_vars,
-                                   XPC_RP_VARS_SIZE,
-                                   (BTE_NOTIFY | BTE_WACQUIRE), NULL);
-                if (bres != BTE_SUCCESS) {
-                        XPC_DEACTIVATE_PARTITION(part,
-                                                 xpc_map_bte_errors(bres));
+                ret = xp_remote_memcpy(remote_vars,
+                                       (void *)part->remote_vars_pa,
+                                       XPC_RP_VARS_SIZE);
+                if (ret != xpSuccess) {
+                        XPC_DEACTIVATE_PARTITION(part, ret);
                         continue;
                 }
 
@@ -457,7 +454,8 @@ static enum xp_retval
 xpc_get_remote_rp(int nasid, u64 *discovered_nasids,
                   struct xpc_rsvd_page *remote_rp, u64 *remote_rp_pa)
 {
-        int bres, i;
+        int i;
+        enum xp_retval ret;
 
         /* get the reserved page's physical address */
 
@@ -466,11 +464,10 @@ xpc_get_remote_rp(int nasid, u64 *discovered_nasids,
                 return xpNoRsvdPageAddr;
 
         /* pull over the reserved page header and part_nasids mask */
-        bres = xp_bte_copy(*remote_rp_pa, (u64)remote_rp,
-                           XPC_RP_HEADER_SIZE + xp_nasid_mask_bytes,
-                           (BTE_NOTIFY | BTE_WACQUIRE), NULL);
-        if (bres != BTE_SUCCESS)
-                return xpc_map_bte_errors(bres);
+        ret = xp_remote_memcpy(remote_rp, (void *)*remote_rp_pa,
+                               XPC_RP_HEADER_SIZE + xp_nasid_mask_bytes);
+        if (ret != xpSuccess)
+                return ret;
 
         if (discovered_nasids != NULL) {
                 u64 *remote_part_nasids = XPC_RP_PART_NASIDS(remote_rp);
@@ -504,16 +501,16 @@ xpc_get_remote_rp(int nasid, u64 *discovered_nasids,
 static enum xp_retval
 xpc_get_remote_vars(u64 remote_vars_pa, struct xpc_vars *remote_vars)
 {
-        int bres;
+        enum xp_retval ret;
 
         if (remote_vars_pa == 0)
                 return xpVarsNotSet;
 
         /* pull over the cross partition variables */
-        bres = xp_bte_copy(remote_vars_pa, (u64)remote_vars, XPC_RP_VARS_SIZE,
-                           (BTE_NOTIFY | BTE_WACQUIRE), NULL);
-        if (bres != BTE_SUCCESS)
-                return xpc_map_bte_errors(bres);
+        ret = xp_remote_memcpy(remote_vars, (void *)remote_vars_pa,
+                               XPC_RP_VARS_SIZE);
+        if (ret != xpSuccess)
+                return ret;
 
         if (XPC_VERSION_MAJOR(remote_vars->version) !=
             XPC_VERSION_MAJOR(XPC_V_VERSION)) {
@@ -1148,7 +1145,6 @@ xpc_initiate_partid_to_nasids(short partid, void *nasid_mask)
 {
         struct xpc_partition *part;
         u64 part_nasid_pa;
-        int bte_res;
 
         part = &xpc_partitions[partid];
         if (part->remote_rp_pa == 0)
@@ -1158,9 +1154,6 @@ xpc_initiate_partid_to_nasids(short partid, void *nasid_mask)
 
         part_nasid_pa = (u64)XPC_RP_PART_NASIDS(part->remote_rp_pa);
 
-        bte_res = xp_bte_copy(part_nasid_pa, (u64)nasid_mask,
-                              xp_nasid_mask_bytes, (BTE_NOTIFY | BTE_WACQUIRE),
-                              NULL);
-
-        return xpc_map_bte_errors(bte_res);
+        return xp_remote_memcpy(nasid_mask, (void *)part_nasid_pa,
+                                xp_nasid_mask_bytes);
 }