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authorRobin Holt <holt@sgi.com>2009-12-15 19:47:56 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-16 10:20:14 -0500
commitc2c9f115741453715d6b4da1cd2de65af8c7ad86 (patch)
tree8e20a0641c622b07b3c7380f81a5552e20e1c8d1 /drivers/misc
parent289750d1f1fd4a715baa2a2c6dd0cec2b8317fd7 (diff)
x86: uv: update XPC to handle updated BIOS interface
The UV BIOS has moved the location of some of their pointers to the "partition reserved page" from memory into a uv hub MMR. The GRU does not support bcopy operations from MMR space so we need to special case the MMR addresses using VLOAD operations. Additionally, the BIOS call for registering a message queue watchlist has removed the 'blade' value and eliminated the structure that was being passed in. This is also reflected in this patch. Signed-off-by: Robin Holt <holt@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/sgi-xp/xp_uv.c23
-rw-r--r--drivers/misc/sgi-xp/xpc_partition.c13
-rw-r--r--drivers/misc/sgi-xp/xpc_uv.c27
3 files changed, 47 insertions, 16 deletions
diff --git a/drivers/misc/sgi-xp/xp_uv.c b/drivers/misc/sgi-xp/xp_uv.c
index 1e61f8a61a30..a0d093274dc0 100644
--- a/drivers/misc/sgi-xp/xp_uv.c
+++ b/drivers/misc/sgi-xp/xp_uv.c
@@ -42,11 +42,34 @@ xp_socket_pa_uv(unsigned long gpa)
42} 42}
43 43
44static enum xp_retval 44static enum xp_retval
45xp_remote_mmr_read(unsigned long dst_gpa, const unsigned long src_gpa,
46 size_t len)
47{
48 int ret;
49 unsigned long *dst_va = __va(uv_gpa_to_soc_phys_ram(dst_gpa));
50
51 BUG_ON(!uv_gpa_in_mmr_space(src_gpa));
52 BUG_ON(len != 8);
53
54 ret = gru_read_gpa(dst_va, src_gpa);
55 if (ret == 0)
56 return xpSuccess;
57
58 dev_err(xp, "gru_read_gpa() failed, dst_gpa=0x%016lx src_gpa=0x%016lx "
59 "len=%ld\n", dst_gpa, src_gpa, len);
60 return xpGruCopyError;
61}
62
63
64static enum xp_retval
45xp_remote_memcpy_uv(unsigned long dst_gpa, const unsigned long src_gpa, 65xp_remote_memcpy_uv(unsigned long dst_gpa, const unsigned long src_gpa,
46 size_t len) 66 size_t len)
47{ 67{
48 int ret; 68 int ret;
49 69
70 if (uv_gpa_in_mmr_space(src_gpa))
71 return xp_remote_mmr_read(dst_gpa, src_gpa, len);
72
50 ret = gru_copy_gpa(dst_gpa, src_gpa, len); 73 ret = gru_copy_gpa(dst_gpa, src_gpa, len);
51 if (ret == 0) 74 if (ret == 0)
52 return xpSuccess; 75 return xpSuccess;
diff --git a/drivers/misc/sgi-xp/xpc_partition.c b/drivers/misc/sgi-xp/xpc_partition.c
index 65877bc5edaa..9a6268c89fdd 100644
--- a/drivers/misc/sgi-xp/xpc_partition.c
+++ b/drivers/misc/sgi-xp/xpc_partition.c
@@ -18,6 +18,7 @@
18#include <linux/device.h> 18#include <linux/device.h>
19#include <linux/hardirq.h> 19#include <linux/hardirq.h>
20#include "xpc.h" 20#include "xpc.h"
21#include <asm/uv/uv_hub.h>
21 22
22/* XPC is exiting flag */ 23/* XPC is exiting flag */
23int xpc_exiting; 24int xpc_exiting;
@@ -92,8 +93,12 @@ xpc_get_rsvd_page_pa(int nasid)
92 break; 93 break;
93 94
94 /* !!! L1_CACHE_ALIGN() is only a sn2-bte_copy requirement */ 95 /* !!! L1_CACHE_ALIGN() is only a sn2-bte_copy requirement */
95 if (L1_CACHE_ALIGN(len) > buf_len) { 96 if (is_shub())
96 kfree(buf_base); 97 len = L1_CACHE_ALIGN(len);
98
99 if (len > buf_len) {
100 if (buf_base != NULL)
101 kfree(buf_base);
97 buf_len = L1_CACHE_ALIGN(len); 102 buf_len = L1_CACHE_ALIGN(len);
98 buf = xpc_kmalloc_cacheline_aligned(buf_len, GFP_KERNEL, 103 buf = xpc_kmalloc_cacheline_aligned(buf_len, GFP_KERNEL,
99 &buf_base); 104 &buf_base);
@@ -105,7 +110,7 @@ xpc_get_rsvd_page_pa(int nasid)
105 } 110 }
106 } 111 }
107 112
108 ret = xp_remote_memcpy(xp_pa(buf), rp_pa, buf_len); 113 ret = xp_remote_memcpy(xp_pa(buf), rp_pa, len);
109 if (ret != xpSuccess) { 114 if (ret != xpSuccess) {
110 dev_dbg(xpc_part, "xp_remote_memcpy failed %d\n", ret); 115 dev_dbg(xpc_part, "xp_remote_memcpy failed %d\n", ret);
111 break; 116 break;
@@ -143,7 +148,7 @@ xpc_setup_rsvd_page(void)
143 dev_err(xpc_part, "SAL failed to locate the reserved page\n"); 148 dev_err(xpc_part, "SAL failed to locate the reserved page\n");
144 return -ESRCH; 149 return -ESRCH;
145 } 150 }
146 rp = (struct xpc_rsvd_page *)__va(rp_pa); 151 rp = (struct xpc_rsvd_page *)__va(xp_socket_pa(rp_pa));
147 152
148 if (rp->SAL_version < 3) { 153 if (rp->SAL_version < 3) {
149 /* SAL_versions < 3 had a SAL_partid defined as a u8 */ 154 /* SAL_versions < 3 had a SAL_partid defined as a u8 */
diff --git a/drivers/misc/sgi-xp/xpc_uv.c b/drivers/misc/sgi-xp/xpc_uv.c
index b5bbe59f9c57..bbf0e2ee6fd9 100644
--- a/drivers/misc/sgi-xp/xpc_uv.c
+++ b/drivers/misc/sgi-xp/xpc_uv.c
@@ -157,22 +157,24 @@ xpc_gru_mq_watchlist_alloc_uv(struct xpc_gru_mq_uv *mq)
157{ 157{
158 int ret; 158 int ret;
159 159
160#if defined CONFIG_X86_64 160#if defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
161 ret = uv_bios_mq_watchlist_alloc(mq->mmr_blade, uv_gpa(mq->address), 161 int mmr_pnode = uv_blade_to_pnode(mq->mmr_blade);
162 mq->order, &mq->mmr_offset); 162
163 if (ret < 0) { 163 ret = sn_mq_watchlist_alloc(mmr_pnode, (void *)uv_gpa(mq->address),
164 dev_err(xpc_part, "uv_bios_mq_watchlist_alloc() failed, "
165 "ret=%d\n", ret);
166 return ret;
167 }
168#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
169 ret = sn_mq_watchlist_alloc(mq->mmr_blade, (void *)uv_gpa(mq->address),
170 mq->order, &mq->mmr_offset); 164 mq->order, &mq->mmr_offset);
171 if (ret < 0) { 165 if (ret < 0) {
172 dev_err(xpc_part, "sn_mq_watchlist_alloc() failed, ret=%d\n", 166 dev_err(xpc_part, "sn_mq_watchlist_alloc() failed, ret=%d\n",
173 ret); 167 ret);
174 return -EBUSY; 168 return -EBUSY;
175 } 169 }
170#elif defined CONFIG_X86_64
171 ret = uv_bios_mq_watchlist_alloc(uv_gpa(mq->address),
172 mq->order, &mq->mmr_offset);
173 if (ret < 0) {
174 dev_err(xpc_part, "uv_bios_mq_watchlist_alloc() failed, "
175 "ret=%d\n", ret);
176 return ret;
177 }
176#else 178#else
177 #error not a supported configuration 179 #error not a supported configuration
178#endif 180#endif
@@ -185,12 +187,13 @@ static void
185xpc_gru_mq_watchlist_free_uv(struct xpc_gru_mq_uv *mq) 187xpc_gru_mq_watchlist_free_uv(struct xpc_gru_mq_uv *mq)
186{ 188{
187 int ret; 189 int ret;
190 int mmr_pnode = uv_blade_to_pnode(mq->mmr_blade);
188 191
189#if defined CONFIG_X86_64 192#if defined CONFIG_X86_64
190 ret = uv_bios_mq_watchlist_free(mq->mmr_blade, mq->watchlist_num); 193 ret = uv_bios_mq_watchlist_free(mmr_pnode, mq->watchlist_num);
191 BUG_ON(ret != BIOS_STATUS_SUCCESS); 194 BUG_ON(ret != BIOS_STATUS_SUCCESS);
192#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV 195#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
193 ret = sn_mq_watchlist_free(mq->mmr_blade, mq->watchlist_num); 196 ret = sn_mq_watchlist_free(mmr_pnode, mq->watchlist_num);
194 BUG_ON(ret != SALRET_OK); 197 BUG_ON(ret != SALRET_OK);
195#else 198#else
196 #error not a supported configuration 199 #error not a supported configuration