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sgi-xp: create a common xp_remote_memcpy() function

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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>
This commit is contained in:
Dean Nelson
2008-07-29 22:34:05 -07:00
committed by Linus Torvalds
parent bc63d387e4
commit 908787db9b
8 changed files with 107 additions and 106 deletions
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55
drivers/misc/sgi-xp/xpc_partition.c
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@@ -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);
}