1d2912cb1SThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-only */ 22f7702afSIdo Yariv /* 32f7702afSIdo Yariv * omap iommu: pagetable definitions 42f7702afSIdo Yariv * 52f7702afSIdo Yariv * Copyright (C) 2008-2010 Nokia Corporation 62f7702afSIdo Yariv * 72f7702afSIdo Yariv * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com> 82f7702afSIdo Yariv */ 92f7702afSIdo Yariv 10ad8e29a0SSuman Anna #ifndef _OMAP_IOPGTABLE_H 11ad8e29a0SSuman Anna #define _OMAP_IOPGTABLE_H 12ad8e29a0SSuman Anna 135ff98fa6SSuman Anna #include <linux/bitops.h> 145ff98fa6SSuman Anna 152f7702afSIdo Yariv /* 162f7702afSIdo Yariv * "L2 table" address mask and size definitions. 172f7702afSIdo Yariv */ 182f7702afSIdo Yariv #define IOPGD_SHIFT 20 195ff98fa6SSuman Anna #define IOPGD_SIZE BIT(IOPGD_SHIFT) 202f7702afSIdo Yariv #define IOPGD_MASK (~(IOPGD_SIZE - 1)) 212f7702afSIdo Yariv 222f7702afSIdo Yariv /* 232f7702afSIdo Yariv * "section" address mask and size definitions. 242f7702afSIdo Yariv */ 252f7702afSIdo Yariv #define IOSECTION_SHIFT 20 265ff98fa6SSuman Anna #define IOSECTION_SIZE BIT(IOSECTION_SHIFT) 272f7702afSIdo Yariv #define IOSECTION_MASK (~(IOSECTION_SIZE - 1)) 282f7702afSIdo Yariv 292f7702afSIdo Yariv /* 302f7702afSIdo Yariv * "supersection" address mask and size definitions. 312f7702afSIdo Yariv */ 322f7702afSIdo Yariv #define IOSUPER_SHIFT 24 335ff98fa6SSuman Anna #define IOSUPER_SIZE BIT(IOSUPER_SHIFT) 342f7702afSIdo Yariv #define IOSUPER_MASK (~(IOSUPER_SIZE - 1)) 352f7702afSIdo Yariv 362f7702afSIdo Yariv #define PTRS_PER_IOPGD (1UL << (32 - IOPGD_SHIFT)) 372f7702afSIdo Yariv #define IOPGD_TABLE_SIZE (PTRS_PER_IOPGD * sizeof(u32)) 382f7702afSIdo Yariv 392f7702afSIdo Yariv /* 402f7702afSIdo Yariv * "small page" address mask and size definitions. 412f7702afSIdo Yariv */ 422f7702afSIdo Yariv #define IOPTE_SHIFT 12 435ff98fa6SSuman Anna #define IOPTE_SIZE BIT(IOPTE_SHIFT) 442f7702afSIdo Yariv #define IOPTE_MASK (~(IOPTE_SIZE - 1)) 452f7702afSIdo Yariv 462f7702afSIdo Yariv /* 472f7702afSIdo Yariv * "large page" address mask and size definitions. 482f7702afSIdo Yariv */ 492f7702afSIdo Yariv #define IOLARGE_SHIFT 16 505ff98fa6SSuman Anna #define IOLARGE_SIZE BIT(IOLARGE_SHIFT) 512f7702afSIdo Yariv #define IOLARGE_MASK (~(IOLARGE_SIZE - 1)) 522f7702afSIdo Yariv 532f7702afSIdo Yariv #define PTRS_PER_IOPTE (1UL << (IOPGD_SHIFT - IOPTE_SHIFT)) 542f7702afSIdo Yariv #define IOPTE_TABLE_SIZE (PTRS_PER_IOPTE * sizeof(u32)) 552f7702afSIdo Yariv 562f7702afSIdo Yariv #define IOPAGE_MASK IOPTE_MASK 572f7702afSIdo Yariv 582f7702afSIdo Yariv /** 592f7702afSIdo Yariv * omap_iommu_translate() - va to pa translation 602f7702afSIdo Yariv * @d: omap iommu descriptor 612f7702afSIdo Yariv * @va: virtual address 622f7702afSIdo Yariv * @mask: omap iommu descriptor mask 632f7702afSIdo Yariv * 642f7702afSIdo Yariv * va to pa translation 652f7702afSIdo Yariv */ omap_iommu_translate(unsigned long d,dma_addr_t va,dma_addr_t mask)66*d84edddcSKrzysztof Kozlowskistatic inline phys_addr_t omap_iommu_translate(unsigned long d, dma_addr_t va, 67*d84edddcSKrzysztof Kozlowski dma_addr_t mask) 682f7702afSIdo Yariv { 692f7702afSIdo Yariv return (d & mask) | (va & (~mask)); 702f7702afSIdo Yariv } 712f7702afSIdo Yariv 722f7702afSIdo Yariv /* 732f7702afSIdo Yariv * some descriptor attributes. 742f7702afSIdo Yariv */ 755ff98fa6SSuman Anna #define IOPGD_TABLE (1) 765ff98fa6SSuman Anna #define IOPGD_SECTION (2) 775ff98fa6SSuman Anna #define IOPGD_SUPER (BIT(18) | IOPGD_SECTION) 782f7702afSIdo Yariv 792f7702afSIdo Yariv #define iopgd_is_table(x) (((x) & 3) == IOPGD_TABLE) 802f7702afSIdo Yariv #define iopgd_is_section(x) (((x) & (1 << 18 | 3)) == IOPGD_SECTION) 812f7702afSIdo Yariv #define iopgd_is_super(x) (((x) & (1 << 18 | 3)) == IOPGD_SUPER) 822f7702afSIdo Yariv 835ff98fa6SSuman Anna #define IOPTE_SMALL (2) 845ff98fa6SSuman Anna #define IOPTE_LARGE (1) 852f7702afSIdo Yariv 862f7702afSIdo Yariv #define iopte_is_small(x) (((x) & 2) == IOPTE_SMALL) 872f7702afSIdo Yariv #define iopte_is_large(x) (((x) & 3) == IOPTE_LARGE) 882f7702afSIdo Yariv 892f7702afSIdo Yariv /* to find an entry in a page-table-directory */ 902f7702afSIdo Yariv #define iopgd_index(da) (((da) >> IOPGD_SHIFT) & (PTRS_PER_IOPGD - 1)) 912f7702afSIdo Yariv #define iopgd_offset(obj, da) ((obj)->iopgd + iopgd_index(da)) 922f7702afSIdo Yariv 932f7702afSIdo Yariv #define iopgd_page_paddr(iopgd) (*iopgd & ~((1 << 10) - 1)) 942f7702afSIdo Yariv #define iopgd_page_vaddr(iopgd) ((u32 *)phys_to_virt(iopgd_page_paddr(iopgd))) 952f7702afSIdo Yariv 962f7702afSIdo Yariv /* to find an entry in the second-level page table. */ 972f7702afSIdo Yariv #define iopte_index(da) (((da) >> IOPTE_SHIFT) & (PTRS_PER_IOPTE - 1)) 982f7702afSIdo Yariv #define iopte_offset(iopgd, da) (iopgd_page_vaddr(iopgd) + iopte_index(da)) 99ad8e29a0SSuman Anna 100ad8e29a0SSuman Anna #endif /* _OMAP_IOPGTABLE_H */ 101