^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * omap iommu: pagetable definitions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2008-2010 Nokia Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #ifndef _OMAP_IOPGTABLE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define _OMAP_IOPGTABLE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * "L2 table" address mask and size definitions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define IOPGD_SHIFT 20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define IOPGD_SIZE BIT(IOPGD_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define IOPGD_MASK (~(IOPGD_SIZE - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * "section" address mask and size definitions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define IOSECTION_SHIFT 20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define IOSECTION_SIZE BIT(IOSECTION_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define IOSECTION_MASK (~(IOSECTION_SIZE - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * "supersection" address mask and size definitions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define IOSUPER_SHIFT 24
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define IOSUPER_SIZE BIT(IOSUPER_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define IOSUPER_MASK (~(IOSUPER_SIZE - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define PTRS_PER_IOPGD (1UL << (32 - IOPGD_SHIFT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define IOPGD_TABLE_SIZE (PTRS_PER_IOPGD * sizeof(u32))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * "small page" address mask and size definitions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define IOPTE_SHIFT 12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define IOPTE_SIZE BIT(IOPTE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define IOPTE_MASK (~(IOPTE_SIZE - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * "large page" address mask and size definitions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define IOLARGE_SHIFT 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define IOLARGE_SIZE BIT(IOLARGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define IOLARGE_MASK (~(IOLARGE_SIZE - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define PTRS_PER_IOPTE (1UL << (IOPGD_SHIFT - IOPTE_SHIFT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define IOPTE_TABLE_SIZE (PTRS_PER_IOPTE * sizeof(u32))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define IOPAGE_MASK IOPTE_MASK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * omap_iommu_translate() - va to pa translation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * @d: omap iommu descriptor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * @va: virtual address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * @mask: omap iommu descriptor mask
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * va to pa translation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static inline phys_addr_t omap_iommu_translate(unsigned long d, dma_addr_t va,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) dma_addr_t mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) return (d & mask) | (va & (~mask));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * some descriptor attributes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define IOPGD_TABLE (1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define IOPGD_SECTION (2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #define IOPGD_SUPER (BIT(18) | IOPGD_SECTION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define iopgd_is_table(x) (((x) & 3) == IOPGD_TABLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define iopgd_is_section(x) (((x) & (1 << 18 | 3)) == IOPGD_SECTION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #define iopgd_is_super(x) (((x) & (1 << 18 | 3)) == IOPGD_SUPER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #define IOPTE_SMALL (2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define IOPTE_LARGE (1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #define iopte_is_small(x) (((x) & 2) == IOPTE_SMALL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #define iopte_is_large(x) (((x) & 3) == IOPTE_LARGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) /* to find an entry in a page-table-directory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #define iopgd_index(da) (((da) >> IOPGD_SHIFT) & (PTRS_PER_IOPGD - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #define iopgd_offset(obj, da) ((obj)->iopgd + iopgd_index(da))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #define iopgd_page_paddr(iopgd) (*iopgd & ~((1 << 10) - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #define iopgd_page_vaddr(iopgd) ((u32 *)phys_to_virt(iopgd_page_paddr(iopgd)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) /* to find an entry in the second-level page table. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #define iopte_index(da) (((da) >> IOPTE_SHIFT) & (PTRS_PER_IOPTE - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #define iopte_offset(iopgd, da) (iopgd_page_vaddr(iopgd) + iopte_index(da))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #endif /* _OMAP_IOPGTABLE_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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