/* * Re-map IO memory to kernel address space so that we can access it. * This is needed for high PCI addresses that aren't mapped in the * 640k-1MB IO memory area on PC's * * (C) Copyright 1995 1996 Linus Torvalds */ #include #include #include #include #include #include #include #ifdef CONFIG_HAVE_ARCH_HUGE_VMAP static int __read_mostly ioremap_pud_capable; static int __read_mostly ioremap_pmd_capable; static int __read_mostly ioremap_huge_disabled; static int __init set_nohugeiomap(char *str) { ioremap_huge_disabled = 1; return 0; } early_param("nohugeiomap", set_nohugeiomap); void __init ioremap_huge_init(void) { if (!ioremap_huge_disabled) { if (arch_ioremap_pud_supported()) ioremap_pud_capable = 1; if (arch_ioremap_pmd_supported()) ioremap_pmd_capable = 1; } } static inline int ioremap_pud_enabled(void) { return ioremap_pud_capable; } static inline int ioremap_pmd_enabled(void) { return ioremap_pmd_capable; } #else /* !CONFIG_HAVE_ARCH_HUGE_VMAP */ static inline int ioremap_pud_enabled(void) { return 0; } static inline int ioremap_pmd_enabled(void) { return 0; } #endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */ static int ioremap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, phys_addr_t phys_addr, pgprot_t prot) { pte_t *pte; u64 pfn; pfn = phys_addr >> PAGE_SHIFT; pte = pte_alloc_kernel(pmd, addr); if (!pte) return -ENOMEM; do { BUG_ON(!pte_none(*pte)); set_pte_at(&init_mm, addr, pte, pfn_pte(pfn, prot)); pfn++; } while (pte++, addr += PAGE_SIZE, addr != end); return 0; } static inline int ioremap_pmd_range(pud_t *pud, unsigned long addr, unsigned long end, phys_addr_t phys_addr, pgprot_t prot) { pmd_t *pmd; unsigned long next; phys_addr -= addr; pmd = pmd_alloc(&init_mm, pud, addr); if (!pmd) return -ENOMEM; do { next = pmd_addr_end(addr, end); if (ioremap_pmd_enabled() && ((next - addr) == PMD_SIZE) && IS_ALIGNED(phys_addr + addr, PMD_SIZE)) { if (pmd_set_huge(pmd, phys_addr + addr, prot)) continue; } if (ioremap_pte_range(pmd, addr, next, phys_addr + addr, prot)) return -ENOMEM; } while (pmd++, addr = next, addr != end); return 0; } static inline int ioremap_pud_range(pgd_t *pgd, unsigned long addr, unsigned long end, phys_addr_t phys_addr, pgprot_t prot) { pud_t *pud; unsigned long next; phys_addr -= addr; pud = pud_alloc(&init_mm, pgd, addr); if (!pud) return -ENOMEM; do { next = pud_addr_end(addr, end); if (ioremap_pud_enabled() && ((next - addr) == PUD_SIZE) && IS_ALIGNED(phys_addr + addr, PUD_SIZE)) { if (pud_set_huge(pud, phys_addr + addr, prot)) continue; } if (ioremap_pmd_range(pud, addr, next, phys_addr + addr, prot)) return -ENOMEM; } while (pud++, addr = next, addr != end); return 0; } int ioremap_page_range(unsigned long addr, unsigned long end, phys_addr_t phys_addr, pgprot_t prot) { pgd_t *pgd; unsigned long start; unsigned long next; int err; BUG_ON(addr >= end); start = addr; phys_addr -= addr; pgd = pgd_offset_k(addr); do { next = pgd_addr_end(addr, end); err = ioremap_pud_range(pgd, addr, next, phys_addr+addr, prot); if (err) break; } while (pgd++, addr = next, addr != end); flush_cache_vmap(start, end); return err; } -ati_pcigart.h692log plain d---------bridge111log plain -rw-r--r--drmP.h25758log plain -rw-r--r--drm_agpsupport.h3867log plain -rw-r--r--drm_atomic.h14443log plain -rw-r--r--drm_atomic_helper.h10607log plain -rw-r--r--drm_auth.h2260log plain -rw-r--r--drm_blend.h2700log plain -rw-r--r--drm_bridge.h7977log plain -rw-r--r--drm_cache.h1763log plain -rw-r--r--drm_color_mgmt.h2166log plain -rw-r--r--drm_connector.h28613log plain -rw-r--r--drm_crtc.h28999log plain -rw-r--r--drm_crtc_helper.h3301log plain -rw-r--r--drm_debugfs_crc.h2670log plain -rw-r--r--drm_displayid.h2850log plain -rw-r--r--drm_dp_dual_mode_helper.h4532log plain -rw-r--r--drm_dp_helper.h30638log plain -rw-r--r--drm_dp_mst_helper.h16260log plain -rw-r--r--drm_drv.h14861log plain -rw-r--r--drm_edid.h14335log plain -rw-r--r--drm_encoder.h8160log plain -rw-r--r--drm_encoder_slave.h6583log plain -rw-r--r--drm_fb_cma_helper.h1929log plain -rw-r--r--drm_fb_helper.h15125log plain -rw-r--r--drm_fixed.h4825log plain -rw-r--r--drm_flip_work.h3071log plain -rw-r--r--drm_fourcc.h2748log plain -rw-r--r--drm_framebuffer.h9623log plain -rw-r--r--drm_gem.h8052log plain -rw-r--r--drm_gem_cma_helper.h2286log plain -rw-r--r--drm_global.h2011log plain -rw-r--r--drm_hashtab.h3139log plain -rw-r--r--drm_irq.h6323log plain -rw-r--r--drm_legacy.h6933log plain -rw-r--r--drm_mem_util.h2468log plain -rw-r--r--drm_mipi_dsi.h10327log plain -rw-r--r--drm_mm.h11462log plain -rw-r--r--drm_mode_config.h23728log plain -rw-r--r--drm_mode_object.h4911log plain -rw-r--r--drm_modes.h17078log plain -rw-r--r--drm_modeset_helper.h1576log plain -rw-r--r--drm_modeset_helper_vtables.h41180log plain -rw-r--r--drm_modeset_lock.h4241log plain -rw-r--r--drm_of.h2034log plain -rw-r--r--drm_os_linux.h2230log plain -rw-r--r--drm_panel.h7079log plain -rw-r--r--drm_pciids.h68035log plain -rw-r--r--drm_plane.h19435log plain -rw-r--r--drm_plane_helper.h3186log plain -rw-r--r--drm_print.h3232log plain -rw-r--r--drm_property.h11460log plain -rw-r--r--drm_rect.h5103log plain -rw-r--r--drm_simple_kms_helper.h4090log plain -rw-r--r--drm_sysfs.h300log plain -rw-r--r--drm_vma_manager.h7840log plain -rw-r--r--gma_drm.h1033log plain d---------i2c109log plain