225 struct ioc {  struct
253 	struct ioc *next;		/* Linked list of discovered iocs */  argument
260 static struct ioc *ioc_list;  argument
295 #define CCIO_SEARCH_LOOP(ioc, res_idx, mask, size)  \  argument
299 		idx = (unsigned int)((unsigned long)res_ptr - (unsigned long)ioc->res_map); \
304 			ioc->res_hint = res_idx + (size >> 3); \
310        u##size *res_ptr = (u##size *)&((ioc)->res_map[ioa->res_hint & ~((size >> 3) - 1)]); \
311        u##size *res_end = (u##size *)&(ioc)->res_map[ioa->res_size]; \
312        CCIO_SEARCH_LOOP(ioc, res_idx, mask, size); \
313        res_ptr = (u##size *)&(ioc)->res_map[0]; \
340 ccio_alloc_range(struct ioc *ioc, struct device *dev, size_t size)  in ccio_alloc_range()  argument
374 		CCIO_FIND_FREE_MAPPING(ioc, res_idx, mask, 8);  in ccio_alloc_range()
376 		CCIO_FIND_FREE_MAPPING(ioc, res_idx, 0xff, 8);  in ccio_alloc_range()
379 		CCIO_FIND_FREE_MAPPING(ioc, res_idx, 0xffff, 16);  in ccio_alloc_range()
381 		CCIO_FIND_FREE_MAPPING(ioc, res_idx, ~(unsigned int)0, 32);  in ccio_alloc_range()
384 		CCIO_FIND_FREE_MAPPING(ioc, res_idx, ~0UL, 64);  in ccio_alloc_range()
397 		__func__, res_idx, ioc->res_hint);  in ccio_alloc_range()
406 	ioc->avg_search[ioc->avg_idx++] = cr_start;  in ccio_alloc_range()
407 	ioc->avg_idx &= CCIO_SEARCH_SAMPLE - 1;  in ccio_alloc_range()
408 	ioc->used_pages += pages_needed;  in ccio_alloc_range()
416 #define CCIO_FREE_MAPPINGS(ioc, res_idx, mask, size) \  argument
417         u##size *res_ptr = (u##size *)&((ioc)->res_map[res_idx]); \
431 ccio_free_range(struct ioc *ioc, dma_addr_t iova, unsigned long pages_mapped)  in ccio_free_range()  argument
444 	ioc->used_pages -= pages_mapped;  in ccio_free_range()
451 		CCIO_FREE_MAPPINGS(ioc, res_idx, mask, 8);  in ccio_free_range()
453 		CCIO_FREE_MAPPINGS(ioc, res_idx, 0xffUL, 8);  in ccio_free_range()
456 		CCIO_FREE_MAPPINGS(ioc, res_idx, 0xffffUL, 16);  in ccio_free_range()
458 		CCIO_FREE_MAPPINGS(ioc, res_idx, ~(unsigned int)0, 32);  in ccio_free_range()
461 		CCIO_FREE_MAPPINGS(ioc, res_idx, ~0UL, 64);  in ccio_free_range()
627 ccio_clear_io_tlb(struct ioc *ioc, dma_addr_t iovp, size_t byte_cnt)  in ccio_clear_io_tlb()  argument
629 	u32 chain_size = 1 << ioc->chainid_shift;  in ccio_clear_io_tlb()
635 		WRITE_U32(CMD_TLB_PURGE | iovp, &ioc->ioc_regs->io_command);  in ccio_clear_io_tlb()
660 ccio_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt)  in ccio_mark_invalid()  argument
671 		char *pdir_ptr = (char *) &(ioc->pdir_base[idx]);  in ccio_mark_invalid()
673 		BUG_ON(idx >= (ioc->pdir_size / sizeof(u64)));  in ccio_mark_invalid()
687 	ccio_clear_io_tlb(ioc, CCIO_IOVP(iova), saved_byte_cnt);  in ccio_mark_invalid()
728 	struct ioc *ioc;  in ccio_map_single()  local
736 	ioc = GET_IOC(dev);  in ccio_map_single()
737 	if (!ioc)  in ccio_map_single()
747 	spin_lock_irqsave(&ioc->res_lock, flags);  in ccio_map_single()
750 	ioc->msingle_calls++;  in ccio_map_single()
751 	ioc->msingle_pages += size >> IOVP_SHIFT;  in ccio_map_single()
754 	idx = ccio_alloc_range(ioc, dev, size);  in ccio_map_single()
757 	pdir_start = &(ioc->pdir_base[idx]);  in ccio_map_single()
778 	spin_unlock_irqrestore(&ioc->res_lock, flags);  in ccio_map_single()
806 	struct ioc *ioc;  in ccio_unmap_page()  local
811 	ioc = GET_IOC(dev);  in ccio_unmap_page()
812 	if (!ioc) {  in ccio_unmap_page()
813 		WARN_ON(!ioc);  in ccio_unmap_page()
824 	spin_lock_irqsave(&ioc->res_lock, flags);  in ccio_unmap_page()
827 	ioc->usingle_calls++;  in ccio_unmap_page()
828 	ioc->usingle_pages += size >> IOVP_SHIFT;  in ccio_unmap_page()
831 	ccio_mark_invalid(ioc, iova, size);  in ccio_unmap_page()
832 	ccio_free_range(ioc, iova, (size >> IOVP_SHIFT));  in ccio_unmap_page()
833 	spin_unlock_irqrestore(&ioc->res_lock, flags);  in ccio_unmap_page()
911 	struct ioc *ioc;  in ccio_map_sg()  local
919 	ioc = GET_IOC(dev);  in ccio_map_sg()
920 	if (!ioc)  in ccio_map_sg()
937 	spin_lock_irqsave(&ioc->res_lock, flags);  in ccio_map_sg()
940 	ioc->msg_calls++;  in ccio_map_sg()
951 	coalesced = iommu_coalesce_chunks(ioc, dev, sglist, nents, ccio_alloc_range);  in ccio_map_sg()
961 	filled = iommu_fill_pdir(ioc, sglist, nents, hint, ccio_io_pdir_entry);  in ccio_map_sg()
963 	spin_unlock_irqrestore(&ioc->res_lock, flags);  in ccio_map_sg()
990 	struct ioc *ioc;  in ccio_unmap_sg()  local
993 	ioc = GET_IOC(dev);  in ccio_unmap_sg()
994 	if (!ioc) {  in ccio_unmap_sg()
995 		WARN_ON(!ioc);  in ccio_unmap_sg()
1003 	ioc->usg_calls++;  in ccio_unmap_sg()
1009 		ioc->usg_pages += sg_dma_len(sglist) >> PAGE_SHIFT;  in ccio_unmap_sg()
1035 	struct ioc *ioc = ioc_list;  in ccio_proc_info()  local
1037 	while (ioc != NULL) {  in ccio_proc_info()
1038 		unsigned int total_pages = ioc->res_size << 3;  in ccio_proc_info()
1044 		seq_printf(m, "%s\n", ioc->name);  in ccio_proc_info()
1047 			   (ioc->cujo20_bug ? "yes" : "no"));  in ccio_proc_info()
1054 			   total_pages - ioc->used_pages, ioc->used_pages,  in ccio_proc_info()
1055 			   (int)(ioc->used_pages * 100 / total_pages));  in ccio_proc_info()
1059 			   ioc->res_size, total_pages);  in ccio_proc_info()
1062 		min = max = ioc->avg_search[0];  in ccio_proc_info()
1064 			avg += ioc->avg_search[j];  in ccio_proc_info()
1065 			if(ioc->avg_search[j] > max)   in ccio_proc_info()
1066 				max = ioc->avg_search[j];  in ccio_proc_info()
1067 			if(ioc->avg_search[j] < min)   in ccio_proc_info()
1068 				min = ioc->avg_search[j];  in ccio_proc_info()
1075 			   ioc->msingle_calls, ioc->msingle_pages,  in ccio_proc_info()
1076 			   (int)((ioc->msingle_pages * 1000)/ioc->msingle_calls));  in ccio_proc_info()
1079 		min = ioc->usingle_calls - ioc->usg_calls;  in ccio_proc_info()
1080 		max = ioc->usingle_pages - ioc->usg_pages;  in ccio_proc_info()
1085 			   ioc->msg_calls, ioc->msg_pages,  in ccio_proc_info()
1086 			   (int)((ioc->msg_pages * 1000)/ioc->msg_calls));  in ccio_proc_info()
1089 			   ioc->usg_calls, ioc->usg_pages,  in ccio_proc_info()
1090 			   (int)((ioc->usg_pages * 1000)/ioc->usg_calls));  in ccio_proc_info()
1093 		ioc = ioc->next;  in ccio_proc_info()
1101 	struct ioc *ioc = ioc_list;  in ccio_proc_bitmap_info()  local
1103 	while (ioc != NULL) {  in ccio_proc_bitmap_info()
1104 		seq_hex_dump(m, "   ", DUMP_PREFIX_NONE, 32, 4, ioc->res_map,  in ccio_proc_bitmap_info()
1105 			     ioc->res_size, false);  in ccio_proc_bitmap_info()
1107 		ioc = ioc->next;  in ccio_proc_bitmap_info()
1122 static struct ioc * ccio_find_ioc(int hw_path)  in ccio_find_ioc()
1125 	struct ioc *ioc;  in ccio_find_ioc()  local
1127 	ioc = ioc_list;  in ccio_find_ioc()
1129 		if (ioc->hw_path == hw_path)  in ccio_find_ioc()
1130 			return ioc;  in ccio_find_ioc()
1132 		ioc = ioc->next;  in ccio_find_ioc()
1164 	struct ioc *ioc = ccio_get_iommu(dev);  in ccio_cujo20_fixup()  local
1167 	ioc->cujo20_bug = 1;  in ccio_cujo20_fixup()
1168 	res_ptr = ioc->res_map;  in ccio_cujo20_fixup()
1171 	while (idx < ioc->res_size) {  in ccio_cujo20_fixup()
1229 ccio_ioc_init(struct ioc *ioc)  in ccio_ioc_init()  argument
1276 	ioc->pdir_size = (iova_space_size / IOVP_SIZE) * sizeof(u64);  in ccio_ioc_init()
1278 	BUG_ON(ioc->pdir_size > 8 * 1024 * 1024);   /* max pdir size <= 8MB */  in ccio_ioc_init()
1281 	BUG_ON((1 << get_order(ioc->pdir_size)) != (ioc->pdir_size >> PAGE_SHIFT));  in ccio_ioc_init()
1284 			__func__, ioc->ioc_regs,  in ccio_ioc_init()
1289 	ioc->pdir_base = (u64 *)__get_free_pages(GFP_KERNEL,   in ccio_ioc_init()
1290 						 get_order(ioc->pdir_size));  in ccio_ioc_init()
1291 	if(NULL == ioc->pdir_base) {  in ccio_ioc_init()
1294 	memset(ioc->pdir_base, 0, ioc->pdir_size);  in ccio_ioc_init()
1296 	BUG_ON((((unsigned long)ioc->pdir_base) & PAGE_MASK) != (unsigned long)ioc->pdir_base);  in ccio_ioc_init()
1297 	DBG_INIT(" base %p\n", ioc->pdir_base);  in ccio_ioc_init()
1300  	ioc->res_size = (ioc->pdir_size / sizeof(u64)) >> 3;  in ccio_ioc_init()
1301 	DBG_INIT("%s() res_size 0x%x\n", __func__, ioc->res_size);  in ccio_ioc_init()
1303 	ioc->res_map = (u8 *)__get_free_pages(GFP_KERNEL,   in ccio_ioc_init()
1304 					      get_order(ioc->res_size));  in ccio_ioc_init()
1305 	if(NULL == ioc->res_map) {  in ccio_ioc_init()
1308 	memset(ioc->res_map, 0, ioc->res_size);  in ccio_ioc_init()
1311 	ioc->res_hint = 16;  in ccio_ioc_init()
1314 	spin_lock_init(&ioc->res_lock);  in ccio_ioc_init()
1320 	ioc->chainid_shift = get_order(iova_space_size) + PAGE_SHIFT - CCIO_CHAINID_SHIFT;  in ccio_ioc_init()
1321 	DBG_INIT(" chainid_shift 0x%x\n", ioc->chainid_shift);  in ccio_ioc_init()
1326 	WRITE_U32(CCIO_CHAINID_MASK << ioc->chainid_shift,   in ccio_ioc_init()
1327 		  &ioc->ioc_regs->io_chain_id_mask);  in ccio_ioc_init()
1329 	WRITE_U32(virt_to_phys(ioc->pdir_base),   in ccio_ioc_init()
1330 		  &ioc->ioc_regs->io_pdir_base);  in ccio_ioc_init()
1335 	WRITE_U32(IOA_NORMAL_MODE, &ioc->ioc_regs->io_control);  in ccio_ioc_init()
1340 	WRITE_U32(0, &ioc->ioc_regs->io_tlb_entry_m);  in ccio_ioc_init()
1341 	WRITE_U32(0, &ioc->ioc_regs->io_tlb_entry_l);  in ccio_ioc_init()
1344 		WRITE_U32((CMD_TLB_DIRECT_WRITE | (i << ioc->chainid_shift)),  in ccio_ioc_init()
1345 			  &ioc->ioc_regs->io_command);  in ccio_ioc_init()
1382 static void __init ccio_init_resources(struct ioc *ioc)  in ccio_init_resources()  argument
1384 	struct resource *res = ioc->mmio_region;  in ccio_init_resources()
1387 	snprintf(name, 14, "GSC Bus [%d/]", ioc->hw_path);  in ccio_init_resources()
1389 	ccio_init_resource(res, name, &ioc->ioc_regs->io_io_low);  in ccio_init_resources()
1390 	ccio_init_resource(res + 1, name, &ioc->ioc_regs->io_io_low_hv);  in ccio_init_resources()
1449 	struct ioc *ioc = ccio_get_iommu(dev);  in ccio_allocate_resource()  local
1450 	if (!ioc)  in ccio_allocate_resource()
1453 	parent = ioc->mmio_region;  in ccio_allocate_resource()
1465 			     &ioc->ioc_regs->io_io_low);  in ccio_allocate_resource()
1467 			     &ioc->ioc_regs->io_io_high);  in ccio_allocate_resource()
1471 			     &ioc->ioc_regs->io_io_low_hv);  in ccio_allocate_resource()
1473 			     &ioc->ioc_regs->io_io_high_hv);  in ccio_allocate_resource()
1486 	struct ioc *ioc = ccio_get_iommu(dev);  in ccio_request_resource()  local
1488 	if (!ioc) {  in ccio_request_resource()
1490 	} else if ((ioc->mmio_region->start <= res->start) &&  in ccio_request_resource()
1491 			(res->end <= ioc->mmio_region->end)) {  in ccio_request_resource()
1492 		parent = ioc->mmio_region;  in ccio_request_resource()
1493 	} else if (((ioc->mmio_region + 1)->start <= res->start) &&  in ccio_request_resource()
1494 			(res->end <= (ioc->mmio_region + 1)->end)) {  in ccio_request_resource()
1495 		parent = ioc->mmio_region + 1;  in ccio_request_resource()
1519 	struct ioc *ioc, **ioc_p = &ioc_list;  in ccio_probe()  local
1522 	ioc = kzalloc(sizeof(struct ioc), GFP_KERNEL);  in ccio_probe()
1523 	if (ioc == NULL) {  in ccio_probe()
1528 	ioc->name = dev->id.hversion == U2_IOA_RUNWAY ? "U2" : "UTurn";  in ccio_probe()
1530 	printk(KERN_INFO "Found %s at 0x%lx\n", ioc->name,  in ccio_probe()
1536 	*ioc_p = ioc;  in ccio_probe()
1538 	ioc->hw_path = dev->hw_path;  in ccio_probe()
1539 	ioc->ioc_regs = ioremap(dev->hpa.start, 4096);  in ccio_probe()
1540 	if (!ioc->ioc_regs) {  in ccio_probe()
1541 		kfree(ioc);  in ccio_probe()
1544 	ccio_ioc_init(ioc);  in ccio_probe()
1545 	ccio_init_resources(ioc);  in ccio_probe()
1552 	hba->iommu = ioc;  in ccio_probe()