^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * \file drm_vm.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Memory mapping for DRM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * \author Rickard E. (Rik) Faith <faith@valinux.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * \author Gareth Hughes <gareth@valinux.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^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) * Created: Mon Jan 4 08:58:31 1999 by faith@valinux.com
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * All Rights Reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * Permission is hereby granted, free of charge, to any person obtaining a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * copy of this software and associated documentation files (the "Software"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * to deal in the Software without restriction, including without limitation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * the rights to use, copy, modify, merge, publish, distribute, sublicense,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * and/or sell copies of the Software, and to permit persons to whom the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * Software is furnished to do so, subject to the following conditions:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * The above copyright notice and this permission notice (including the next
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * paragraph) shall be included in all copies or substantial portions of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * Software.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * OTHER DEALINGS IN THE SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <linux/vmalloc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include <linux/pgtable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #if defined(__ia64__)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include <linux/efi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include <linux/mem_encrypt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #include <drm/drm_agpsupport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include <drm/drm_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #include <drm/drm_drv.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #include <drm/drm_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #include <drm/drm_framebuffer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #include <drm/drm_print.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #include "drm_internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #include "drm_legacy.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) struct drm_vma_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct list_head head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct vm_area_struct *vma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) pid_t pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static void drm_vm_open(struct vm_area_struct *vma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static void drm_vm_close(struct vm_area_struct *vma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static pgprot_t drm_io_prot(struct drm_local_map *map,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct vm_area_struct *vma)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) pgprot_t tmp = vm_get_page_prot(vma->vm_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /* We don't want graphics memory to be mapped encrypted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) tmp = pgprot_decrypted(tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #if defined(__i386__) || defined(__x86_64__) || defined(__powerpc__) || \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) defined(__mips__)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (map->type == _DRM_REGISTERS && !(map->flags & _DRM_WRITE_COMBINING))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) tmp = pgprot_noncached(tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) tmp = pgprot_writecombine(tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #elif defined(__ia64__)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) if (efi_range_is_wc(vma->vm_start, vma->vm_end -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) vma->vm_start))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) tmp = pgprot_writecombine(tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) tmp = pgprot_noncached(tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #elif defined(__sparc__) || defined(__arm__)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) tmp = pgprot_noncached(tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) return tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static pgprot_t drm_dma_prot(uint32_t map_type, struct vm_area_struct *vma)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) pgprot_t tmp = vm_get_page_prot(vma->vm_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #if defined(__powerpc__) && defined(CONFIG_NOT_COHERENT_CACHE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) tmp = pgprot_noncached_wc(tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * \c fault method for AGP virtual memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * \param vma virtual memory area.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * \param address access address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * \return pointer to the page structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * Find the right map and if it's AGP memory find the real physical page to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * map, get the page, increment the use count and return it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) #if IS_ENABLED(CONFIG_AGP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static vm_fault_t drm_vm_fault(struct vm_fault *vmf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct vm_area_struct *vma = vmf->vma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct drm_file *priv = vma->vm_file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) struct drm_device *dev = priv->minor->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct drm_local_map *map = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct drm_map_list *r_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) struct drm_hash_item *hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * Find the right map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (!dev->agp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) goto vm_fault_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (!dev->agp || !dev->agp->cant_use_aperture)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) goto vm_fault_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (drm_ht_find_item(&dev->map_hash, vma->vm_pgoff, &hash))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) goto vm_fault_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) r_list = drm_hash_entry(hash, struct drm_map_list, hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) map = r_list->map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) if (map && map->type == _DRM_AGP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * Using vm_pgoff as a selector forces us to use this unusual
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) * addressing scheme.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) resource_size_t offset = vmf->address - vma->vm_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) resource_size_t baddr = map->offset + offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) struct drm_agp_mem *agpmem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) struct page *page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) #ifdef __alpha__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * Adjust to a bus-relative address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) baddr -= dev->hose->mem_space->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * It's AGP memory - find the real physical page to map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) list_for_each_entry(agpmem, &dev->agp->memory, head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) if (agpmem->bound <= baddr &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) agpmem->bound + agpmem->pages * PAGE_SIZE > baddr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) if (&agpmem->head == &dev->agp->memory)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) goto vm_fault_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * Get the page, inc the use count, and return it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) offset = (baddr - agpmem->bound) >> PAGE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) page = agpmem->memory->pages[offset];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) get_page(page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) vmf->page = page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) DRM_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) ("baddr = 0x%llx page = 0x%p, offset = 0x%llx, count=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) (unsigned long long)baddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) agpmem->memory->pages[offset],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) (unsigned long long)offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) page_count(page));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) vm_fault_error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) return VM_FAULT_SIGBUS; /* Disallow mremap */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) static vm_fault_t drm_vm_fault(struct vm_fault *vmf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) return VM_FAULT_SIGBUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * \c nopage method for shared virtual memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * \param vma virtual memory area.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) * \param address access address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) * \return pointer to the page structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * Get the mapping, find the real physical page to map, get the page, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * return it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) static vm_fault_t drm_vm_shm_fault(struct vm_fault *vmf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) struct vm_area_struct *vma = vmf->vma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct drm_local_map *map = vma->vm_private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) unsigned long offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) unsigned long i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) struct page *page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (!map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) return VM_FAULT_SIGBUS; /* Nothing allocated */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) offset = vmf->address - vma->vm_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) i = (unsigned long)map->handle + offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) page = vmalloc_to_page((void *)i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) if (!page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) return VM_FAULT_SIGBUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) get_page(page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) vmf->page = page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) DRM_DEBUG("shm_fault 0x%lx\n", offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) * \c close method for shared virtual memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) * \param vma virtual memory area.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * Deletes map information if we are the last
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) * person to close a mapping and it's not in the global maplist.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) static void drm_vm_shm_close(struct vm_area_struct *vma)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) struct drm_file *priv = vma->vm_file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) struct drm_device *dev = priv->minor->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) struct drm_vma_entry *pt, *temp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) struct drm_local_map *map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) struct drm_map_list *r_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) int found_maps = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) DRM_DEBUG("0x%08lx,0x%08lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) vma->vm_start, vma->vm_end - vma->vm_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) map = vma->vm_private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) mutex_lock(&dev->struct_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) list_for_each_entry_safe(pt, temp, &dev->vmalist, head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) if (pt->vma->vm_private_data == map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) found_maps++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (pt->vma == vma) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) list_del(&pt->head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) kfree(pt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) /* We were the only map that was found */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) if (found_maps == 1 && map->flags & _DRM_REMOVABLE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) /* Check to see if we are in the maplist, if we are not, then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) * we delete this mappings information.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) found_maps = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) list_for_each_entry(r_list, &dev->maplist, head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) if (r_list->map == map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) found_maps++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (!found_maps) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) switch (map->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) case _DRM_REGISTERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) case _DRM_FRAME_BUFFER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) arch_phys_wc_del(map->mtrr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) iounmap(map->handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) case _DRM_SHM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) vfree(map->handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) case _DRM_AGP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) case _DRM_SCATTER_GATHER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) case _DRM_CONSISTENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) dma_free_coherent(&dev->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) map->size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) map->handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) map->offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) kfree(map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) mutex_unlock(&dev->struct_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) * \c fault method for DMA virtual memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) * \param address access address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) * \return pointer to the page structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) * Determine the page number from the page offset and get it from drm_device_dma::pagelist.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) static vm_fault_t drm_vm_dma_fault(struct vm_fault *vmf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) struct vm_area_struct *vma = vmf->vma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) struct drm_file *priv = vma->vm_file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) struct drm_device *dev = priv->minor->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) struct drm_device_dma *dma = dev->dma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) unsigned long offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) unsigned long page_nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) struct page *page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) if (!dma)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return VM_FAULT_SIGBUS; /* Error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) if (!dma->pagelist)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) return VM_FAULT_SIGBUS; /* Nothing allocated */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) offset = vmf->address - vma->vm_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) /* vm_[pg]off[set] should be 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) page_nr = offset >> PAGE_SHIFT; /* page_nr could just be vmf->pgoff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) page = virt_to_page((void *)dma->pagelist[page_nr]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) get_page(page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) vmf->page = page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) DRM_DEBUG("dma_fault 0x%lx (page %lu)\n", offset, page_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) * \c fault method for scatter-gather virtual memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) * \param address access address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) * \return pointer to the page structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) * Determine the map offset from the page offset and get it from drm_sg_mem::pagelist.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) static vm_fault_t drm_vm_sg_fault(struct vm_fault *vmf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) struct vm_area_struct *vma = vmf->vma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) struct drm_local_map *map = vma->vm_private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) struct drm_file *priv = vma->vm_file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) struct drm_device *dev = priv->minor->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) struct drm_sg_mem *entry = dev->sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) unsigned long offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) unsigned long map_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) unsigned long page_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) struct page *page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) if (!entry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return VM_FAULT_SIGBUS; /* Error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) if (!entry->pagelist)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) return VM_FAULT_SIGBUS; /* Nothing allocated */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) offset = vmf->address - vma->vm_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) map_offset = map->offset - (unsigned long)dev->sg->virtual;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) page_offset = (offset >> PAGE_SHIFT) + (map_offset >> PAGE_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) page = entry->pagelist[page_offset];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) get_page(page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) vmf->page = page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) /** AGP virtual memory operations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) static const struct vm_operations_struct drm_vm_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) .fault = drm_vm_fault,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) .open = drm_vm_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) .close = drm_vm_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) /** Shared virtual memory operations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) static const struct vm_operations_struct drm_vm_shm_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) .fault = drm_vm_shm_fault,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) .open = drm_vm_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) .close = drm_vm_shm_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) /** DMA virtual memory operations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) static const struct vm_operations_struct drm_vm_dma_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) .fault = drm_vm_dma_fault,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) .open = drm_vm_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) .close = drm_vm_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) /** Scatter-gather virtual memory operations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) static const struct vm_operations_struct drm_vm_sg_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) .fault = drm_vm_sg_fault,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) .open = drm_vm_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) .close = drm_vm_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) static void drm_vm_open_locked(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) struct vm_area_struct *vma)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) struct drm_vma_entry *vma_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) DRM_DEBUG("0x%08lx,0x%08lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) vma->vm_start, vma->vm_end - vma->vm_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) vma_entry = kmalloc(sizeof(*vma_entry), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) if (vma_entry) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) vma_entry->vma = vma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) vma_entry->pid = current->pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) list_add(&vma_entry->head, &dev->vmalist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) static void drm_vm_open(struct vm_area_struct *vma)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) struct drm_file *priv = vma->vm_file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) struct drm_device *dev = priv->minor->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) mutex_lock(&dev->struct_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) drm_vm_open_locked(dev, vma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) mutex_unlock(&dev->struct_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) static void drm_vm_close_locked(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) struct vm_area_struct *vma)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) struct drm_vma_entry *pt, *temp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) DRM_DEBUG("0x%08lx,0x%08lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) vma->vm_start, vma->vm_end - vma->vm_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) list_for_each_entry_safe(pt, temp, &dev->vmalist, head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) if (pt->vma == vma) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) list_del(&pt->head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) kfree(pt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) * \c close method for all virtual memory types.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) * \param vma virtual memory area.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) * Search the \p vma private data entry in drm_device::vmalist, unlink it, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) * free it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) static void drm_vm_close(struct vm_area_struct *vma)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) struct drm_file *priv = vma->vm_file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) struct drm_device *dev = priv->minor->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) mutex_lock(&dev->struct_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) drm_vm_close_locked(dev, vma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) mutex_unlock(&dev->struct_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) * mmap DMA memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) * \param file_priv DRM file private.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) * \param vma virtual memory area.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) * \return zero on success or a negative number on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) * Sets the virtual memory area operations structure to vm_dma_ops, the file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) * pointer, and calls vm_open().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) static int drm_mmap_dma(struct file *filp, struct vm_area_struct *vma)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) struct drm_file *priv = filp->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) struct drm_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) struct drm_device_dma *dma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) unsigned long length = vma->vm_end - vma->vm_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) dev = priv->minor->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) dma = dev->dma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) DRM_DEBUG("start = 0x%lx, end = 0x%lx, page offset = 0x%lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) vma->vm_start, vma->vm_end, vma->vm_pgoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) /* Length must match exact page count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) if (!dma || (length >> PAGE_SHIFT) != dma->page_count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) if (!capable(CAP_SYS_ADMIN) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) (dma->flags & _DRM_DMA_USE_PCI_RO)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) vma->vm_flags &= ~(VM_WRITE | VM_MAYWRITE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) #if defined(__i386__) || defined(__x86_64__)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) pgprot_val(vma->vm_page_prot) &= ~_PAGE_RW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) /* Ye gads this is ugly. With more thought
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) we could move this up higher and use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) `protection_map' instead. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) vma->vm_page_prot =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) __pgprot(pte_val
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) (pte_wrprotect
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) (__pte(pgprot_val(vma->vm_page_prot)))));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) vma->vm_ops = &drm_vm_dma_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) drm_vm_open_locked(dev, vma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) static resource_size_t drm_core_get_reg_ofs(struct drm_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) #ifdef __alpha__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) return dev->hose->dense_mem_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) * mmap DMA memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) * \param file_priv DRM file private.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) * \param vma virtual memory area.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) * \return zero on success or a negative number on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) * If the virtual memory area has no offset associated with it then it's a DMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) * area, so calls mmap_dma(). Otherwise searches the map in drm_device::maplist,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) * checks that the restricted flag is not set, sets the virtual memory operations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) * according to the mapping type and remaps the pages. Finally sets the file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) * pointer and calls vm_open().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) static int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) struct drm_file *priv = filp->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) struct drm_device *dev = priv->minor->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) struct drm_local_map *map = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) resource_size_t offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) struct drm_hash_item *hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) DRM_DEBUG("start = 0x%lx, end = 0x%lx, page offset = 0x%lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) vma->vm_start, vma->vm_end, vma->vm_pgoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) if (!priv->authenticated)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) return -EACCES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) /* We check for "dma". On Apple's UniNorth, it's valid to have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) * the AGP mapped at physical address 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) * --BenH.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) if (!vma->vm_pgoff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) #if IS_ENABLED(CONFIG_AGP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) && (!dev->agp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) || dev->agp->agp_info.device->vendor != PCI_VENDOR_ID_APPLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) return drm_mmap_dma(filp, vma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) if (drm_ht_find_item(&dev->map_hash, vma->vm_pgoff, &hash)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) DRM_ERROR("Could not find map\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) map = drm_hash_entry(hash, struct drm_map_list, hash)->map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) if (!map || ((map->flags & _DRM_RESTRICTED) && !capable(CAP_SYS_ADMIN)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) /* Check for valid size. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) if (map->size < vma->vm_end - vma->vm_start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) if (!capable(CAP_SYS_ADMIN) && (map->flags & _DRM_READ_ONLY)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) vma->vm_flags &= ~(VM_WRITE | VM_MAYWRITE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) #if defined(__i386__) || defined(__x86_64__)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) pgprot_val(vma->vm_page_prot) &= ~_PAGE_RW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) /* Ye gads this is ugly. With more thought
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) we could move this up higher and use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) `protection_map' instead. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) vma->vm_page_prot =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) __pgprot(pte_val
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) (pte_wrprotect
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) (__pte(pgprot_val(vma->vm_page_prot)))));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) switch (map->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) #if !defined(__arm__)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) case _DRM_AGP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) if (dev->agp && dev->agp->cant_use_aperture) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) * On some platforms we can't talk to bus dma address from the CPU, so for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) * memory of type DRM_AGP, we'll deal with sorting out the real physical
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) * pages and mappings in fault()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) #if defined(__powerpc__)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) vma->vm_ops = &drm_vm_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) fallthrough; /* to _DRM_FRAME_BUFFER... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) case _DRM_FRAME_BUFFER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) case _DRM_REGISTERS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) offset = drm_core_get_reg_ofs(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) vma->vm_page_prot = drm_io_prot(map, vma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) if (io_remap_pfn_range(vma, vma->vm_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) (map->offset + offset) >> PAGE_SHIFT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) vma->vm_end - vma->vm_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) vma->vm_page_prot))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) return -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) DRM_DEBUG(" Type = %d; start = 0x%lx, end = 0x%lx,"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) " offset = 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) map->type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) vma->vm_start, vma->vm_end, (unsigned long long)(map->offset + offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) vma->vm_ops = &drm_vm_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) case _DRM_CONSISTENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) /* Consistent memory is really like shared memory. But
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) * it's allocated in a different way, so avoid fault */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) if (remap_pfn_range(vma, vma->vm_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) page_to_pfn(virt_to_page(map->handle)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) vma->vm_end - vma->vm_start, vma->vm_page_prot))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) return -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) vma->vm_page_prot = drm_dma_prot(map->type, vma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) fallthrough; /* to _DRM_SHM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) case _DRM_SHM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) vma->vm_ops = &drm_vm_shm_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) vma->vm_private_data = (void *)map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) case _DRM_SCATTER_GATHER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) vma->vm_ops = &drm_vm_sg_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) vma->vm_private_data = (void *)map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) vma->vm_page_prot = drm_dma_prot(map->type, vma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) return -EINVAL; /* This should never happen. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) drm_vm_open_locked(dev, vma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) int drm_legacy_mmap(struct file *filp, struct vm_area_struct *vma)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) struct drm_file *priv = filp->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) struct drm_device *dev = priv->minor->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) if (drm_dev_is_unplugged(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) mutex_lock(&dev->struct_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) ret = drm_mmap_locked(filp, vma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) mutex_unlock(&dev->struct_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) EXPORT_SYMBOL(drm_legacy_mmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) #if IS_ENABLED(CONFIG_DRM_LEGACY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) void drm_legacy_vma_flush(struct drm_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) struct drm_vma_entry *vma, *vma_temp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) /* Clear vma list (only needed for legacy drivers) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) list_del(&vma->head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) kfree(vma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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