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-rw-r--r--arch/ia64/sn/kernel/io_init.c54
1 files changed, 51 insertions, 3 deletions
diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c
index 233d55115d33..00700f7e6837 100644
--- a/arch/ia64/sn/kernel/io_init.c
+++ b/arch/ia64/sn/kernel/io_init.c
@@ -165,8 +165,45 @@ sn_pcidev_info_get(struct pci_dev *dev)
165 return NULL; 165 return NULL;
166} 166}
167 167
168/* Older PROM flush WAR
169 *
170 * 01/16/06 -- This war will be in place until a new official PROM is released.
171 * Additionally note that the struct sn_flush_device_war also has to be
172 * removed from arch/ia64/sn/include/xtalk/hubdev.h
173 */
174static u8 war_implemented = 0;
175
176static void sn_device_fixup_war(u64 nasid, u64 widget, int device,
177 struct sn_flush_device_common *common)
178{
179 struct sn_flush_device_war *war_list;
180 struct sn_flush_device_war *dev_entry;
181 struct ia64_sal_retval isrv = {0,0,0,0};
182
183 if (!war_implemented) {
184 printk(KERN_WARNING "PROM version < 4.50 -- implementing old "
185 "PROM flush WAR\n");
186 war_implemented = 1;
187 }
188
189 war_list = kzalloc(DEV_PER_WIDGET * sizeof(*war_list), GFP_KERNEL);
190 if (!war_list)
191 BUG();
192
193 SAL_CALL_NOLOCK(isrv, SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,
194 nasid, widget, __pa(war_list), 0, 0, 0 ,0);
195 if (isrv.status)
196 panic("sn_device_fixup_war failed: %s\n",
197 ia64_sal_strerror(isrv.status));
198
199 dev_entry = war_list + device;
200 memcpy(common,dev_entry, sizeof(*common));
201
202 kfree(war_list);
203}
204
168/* 205/*
169 * sn_fixup_ionodes() - This routine initializes the HUB data strcuture for 206 * sn_fixup_ionodes() - This routine initializes the HUB data strcuture for
170 * each node in the system. 207 * each node in the system.
171 */ 208 */
172static void sn_fixup_ionodes(void) 209static void sn_fixup_ionodes(void)
@@ -246,8 +283,19 @@ static void sn_fixup_ionodes(void)
246 widget, 283 widget,
247 device, 284 device,
248 (u64)(dev_entry->common)); 285 (u64)(dev_entry->common));
249 if (status) 286 if (status) {
250 BUG(); 287 if (sn_sal_rev() < 0x0450) {
288 /* shortlived WAR for older
289 * PROM images
290 */
291 sn_device_fixup_war(nasid,
292 widget,
293 device,
294 dev_entry->common);
295 }
296 else
297 BUG();
298 }
251 299
252 spin_lock_init(&dev_entry->sfdl_flush_lock); 300 spin_lock_init(&dev_entry->sfdl_flush_lock);
253 } 301 }