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Diffstat (limited to 'arch/sparc64/kernel/pci_psycho.c')
-rw-r--r--arch/sparc64/kernel/pci_psycho.c44
1 files changed, 5 insertions, 39 deletions
diff --git a/arch/sparc64/kernel/pci_psycho.c b/arch/sparc64/kernel/pci_psycho.c
index 6ed1ef25e0ac..c03ed5f49d31 100644
--- a/arch/sparc64/kernel/pci_psycho.c
+++ b/arch/sparc64/kernel/pci_psycho.c
@@ -1207,13 +1207,9 @@ static void psycho_scan_bus(struct pci_controller_info *p)
1207static void psycho_iommu_init(struct pci_controller_info *p) 1207static void psycho_iommu_init(struct pci_controller_info *p)
1208{ 1208{
1209 struct pci_iommu *iommu = p->pbm_A.iommu; 1209 struct pci_iommu *iommu = p->pbm_A.iommu;
1210 unsigned long tsbbase, i; 1210 unsigned long i;
1211 u64 control; 1211 u64 control;
1212 1212
1213 /* Setup initial software IOMMU state. */
1214 spin_lock_init(&iommu->lock);
1215 iommu->ctx_lowest_free = 1;
1216
1217 /* Register addresses. */ 1213 /* Register addresses. */
1218 iommu->iommu_control = p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL; 1214 iommu->iommu_control = p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL;
1219 iommu->iommu_tsbbase = p->pbm_A.controller_regs + PSYCHO_IOMMU_TSBBASE; 1215 iommu->iommu_tsbbase = p->pbm_A.controller_regs + PSYCHO_IOMMU_TSBBASE;
@@ -1240,40 +1236,10 @@ static void psycho_iommu_init(struct pci_controller_info *p)
1240 /* Leave diag mode enabled for full-flushing done 1236 /* Leave diag mode enabled for full-flushing done
1241 * in pci_iommu.c 1237 * in pci_iommu.c
1242 */ 1238 */
1239 pci_iommu_table_init(iommu, IO_TSB_SIZE, 0xc0000000, 0xffffffff);
1243 1240
1244 iommu->dummy_page = __get_free_pages(GFP_KERNEL, 0); 1241 psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_TSBBASE,
1245 if (!iommu->dummy_page) { 1242 __pa(iommu->page_table));
1246 prom_printf("PSYCHO_IOMMU: Error, gfp(dummy_page) failed.\n");
1247 prom_halt();
1248 }
1249 memset((void *)iommu->dummy_page, 0, PAGE_SIZE);
1250 iommu->dummy_page_pa = (unsigned long) __pa(iommu->dummy_page);
1251
1252 /* Using assumed page size 8K with 128K entries we need 1MB iommu page
1253 * table (128K ioptes * 8 bytes per iopte). This is
1254 * page order 7 on UltraSparc.
1255 */
1256 tsbbase = __get_free_pages(GFP_KERNEL, get_order(IO_TSB_SIZE));
1257 if (!tsbbase) {
1258 prom_printf("PSYCHO_IOMMU: Error, gfp(tsb) failed.\n");
1259 prom_halt();
1260 }
1261 iommu->page_table = (iopte_t *)tsbbase;
1262 iommu->page_table_sz_bits = 17;
1263 iommu->page_table_map_base = 0xc0000000;
1264 iommu->dma_addr_mask = 0xffffffff;
1265 pci_iommu_table_init(iommu, IO_TSB_SIZE);
1266
1267 /* We start with no consistent mappings. */
1268 iommu->lowest_consistent_map =
1269 1 << (iommu->page_table_sz_bits - PBM_LOGCLUSTERS);
1270
1271 for (i = 0; i < PBM_NCLUSTERS; i++) {
1272 iommu->alloc_info[i].flush = 0;
1273 iommu->alloc_info[i].next = 0;
1274 }
1275
1276 psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_TSBBASE, __pa(tsbbase));
1277 1243
1278 control = psycho_read(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL); 1244 control = psycho_read(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL);
1279 control &= ~(PSYCHO_IOMMU_CTRL_TSBSZ | PSYCHO_IOMMU_CTRL_TBWSZ); 1245 control &= ~(PSYCHO_IOMMU_CTRL_TSBSZ | PSYCHO_IOMMU_CTRL_TBWSZ);
@@ -1281,7 +1247,7 @@ static void psycho_iommu_init(struct pci_controller_info *p)
1281 psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL, control); 1247 psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL, control);
1282 1248
1283 /* If necessary, hook us up for starfire IRQ translations. */ 1249 /* If necessary, hook us up for starfire IRQ translations. */
1284 if(this_is_starfire) 1250 if (this_is_starfire)
1285 p->starfire_cookie = starfire_hookup(p->pbm_A.portid); 1251 p->starfire_cookie = starfire_hookup(p->pbm_A.portid);
1286 else 1252 else
1287 p->starfire_cookie = NULL; 1253 p->starfire_cookie = NULL;