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[IA64-SGI] cleanup the way XPC locates the reserved page

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Eliminate the passing in of a scratch buffer used for locating the
reserved page setup for XPC.

Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Dean Nelson 2005-10-25 14:11:53 -05:00 committed by Tony Luck
parent 4b38fcd485
commit 2792902946
1 changed files with 26 additions and 13 deletions
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39
arch/ia64/sn/kernel/xpc_partition.c
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@ -85,13 +85,16 @@ char ____cacheline_aligned xpc_remote_copy_buffer[XPC_RP_HEADER_SIZE +
* for that nasid. This function returns 0 on any error.
*/
static u64
xpc_get_rsvd_page_pa(int nasid, u64 buf, u64 buf_size)
xpc_get_rsvd_page_pa(int nasid)
{
bte_result_t bte_res;
s64 status;
u64 cookie = 0;
u64 rp_pa = nasid; /* seed with nasid */
u64 len = 0;
u64 buf = buf;
u64 buf_len = 0;
void *buf_base = NULL;
while (1) {
@ -107,13 +110,22 @@ xpc_get_rsvd_page_pa(int nasid, u64 buf, u64 buf_size)
break;
}
if (len > buf_size) {
dev_err(xpc_part, "len (=0x%016lx) > buf_size\n", len);
status = SALRET_ERROR;
break;
if (L1_CACHE_ALIGN(len) > buf_len) {
if (buf_base != NULL) {
kfree(buf_base);
}
buf_len = L1_CACHE_ALIGN(len);
buf = (u64) xpc_kmalloc_cacheline_aligned(buf_len,
GFP_KERNEL, &buf_base);
if (buf_base == NULL) {
dev_err(xpc_part, "unable to kmalloc "
"len=0x%016lx\n", buf_len);
status = SALRET_ERROR;
break;
}
}
bte_res = xp_bte_copy(rp_pa, ia64_tpa(buf), buf_size,
bte_res = xp_bte_copy(rp_pa, ia64_tpa(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);
@ -122,6 +134,10 @@ xpc_get_rsvd_page_pa(int nasid, u64 buf, u64 buf_size)
}
}
if (buf_base != NULL) {
kfree(buf_base);
}
if (status != SALRET_OK) {
rp_pa = 0;
}
@ -146,10 +162,9 @@ xpc_rsvd_page_init(void)
/* get the local reserved page's address */
rp_pa = xpc_get_rsvd_page_pa(cnodeid_to_nasid(0),
(u64) xpc_remote_copy_buffer,
XPC_RP_HEADER_SIZE +
L1_CACHE_BYTES);
preempt_disable();
rp_pa = xpc_get_rsvd_page_pa(cpuid_to_nasid(smp_processor_id()));
preempt_enable();
if (rp_pa == 0) {
dev_err(xpc_part, "SAL failed to locate the reserved page\n");
return NULL;
@ -455,9 +470,7 @@ xpc_get_remote_rp(int nasid, u64 *discovered_nasids,
/* get the reserved page's physical address */
*remote_rp_pa = xpc_get_rsvd_page_pa(nasid, (u64) remote_rp,
XPC_RP_HEADER_SIZE +
xp_nasid_mask_bytes);
*remote_rp_pa = xpc_get_rsvd_page_pa(nasid);
if (*remote_rp_pa == 0) {
return xpcNoRsvdPageAddr;
}