LXR linux/drivers/gpu/drm/bochs/bochs.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#include <linux/io.h>
   3#include <linux/console.h>
   4
   5#include <drm/drmP.h>
   6#include <drm/drm_crtc.h>
   7#include <drm/drm_crtc_helper.h>
   8#include <drm/drm_encoder.h>
   9#include <drm/drm_fb_helper.h>
  10
  11#include <drm/drm_gem.h>
  12
  13#include <drm/ttm/ttm_bo_driver.h>
  14#include <drm/ttm/ttm_page_alloc.h>
  15
  16/* ---------------------------------------------------------------------- */
  17
  18#define VBE_DISPI_IOPORT_INDEX           0x01CE
  19#define VBE_DISPI_IOPORT_DATA            0x01CF
  20
  21#define VBE_DISPI_INDEX_ID               0x0
  22#define VBE_DISPI_INDEX_XRES             0x1
  23#define VBE_DISPI_INDEX_YRES             0x2
  24#define VBE_DISPI_INDEX_BPP              0x3
  25#define VBE_DISPI_INDEX_ENABLE           0x4
  26#define VBE_DISPI_INDEX_BANK             0x5
  27#define VBE_DISPI_INDEX_VIRT_WIDTH       0x6
  28#define VBE_DISPI_INDEX_VIRT_HEIGHT      0x7
  29#define VBE_DISPI_INDEX_X_OFFSET         0x8
  30#define VBE_DISPI_INDEX_Y_OFFSET         0x9
  31#define VBE_DISPI_INDEX_VIDEO_MEMORY_64K 0xa
  32
  33#define VBE_DISPI_ID0                    0xB0C0
  34#define VBE_DISPI_ID1                    0xB0C1
  35#define VBE_DISPI_ID2                    0xB0C2
  36#define VBE_DISPI_ID3                    0xB0C3
  37#define VBE_DISPI_ID4                    0xB0C4
  38#define VBE_DISPI_ID5                    0xB0C5
  39
  40#define VBE_DISPI_DISABLED               0x00
  41#define VBE_DISPI_ENABLED                0x01
  42#define VBE_DISPI_GETCAPS                0x02
  43#define VBE_DISPI_8BIT_DAC               0x20
  44#define VBE_DISPI_LFB_ENABLED            0x40
  45#define VBE_DISPI_NOCLEARMEM             0x80
  46
  47/* ---------------------------------------------------------------------- */
  48
  49enum bochs_types {
  50        BOCHS_QEMU_STDVGA,
  51        BOCHS_UNKNOWN,
  52};
  53
  54struct bochs_framebuffer {
  55        struct drm_framebuffer base;
  56        struct drm_gem_object *obj;
  57};
  58
  59struct bochs_device {
  60        /* hw */
  61        void __iomem   *mmio;
  62        int            ioports;
  63        void __iomem   *fb_map;
  64        unsigned long  fb_base;
  65        unsigned long  fb_size;
  66
  67        /* mode */
  68        u16 xres;
  69        u16 yres;
  70        u16 yres_virtual;
  71        u32 stride;
  72        u32 bpp;
  73
  74        /* drm */
  75        struct drm_device  *dev;
  76        struct drm_crtc crtc;
  77        struct drm_encoder encoder;
  78        struct drm_connector connector;
  79        bool mode_config_initialized;
  80
  81        /* ttm */
  82        struct {
  83                struct drm_global_reference mem_global_ref;
  84                struct ttm_bo_global_ref bo_global_ref;
  85                struct ttm_bo_device bdev;
  86                bool initialized;
  87        } ttm;
  88
  89        /* fbdev */
  90        struct {
  91                struct bochs_framebuffer gfb;
  92                struct drm_fb_helper helper;
  93                int size;
  94                bool initialized;
  95        } fb;
  96};
  97
  98#define to_bochs_framebuffer(x) container_of(x, struct bochs_framebuffer, base)
  99
 100struct bochs_bo {
 101        struct ttm_buffer_object bo;
 102        struct ttm_placement placement;
 103        struct ttm_bo_kmap_obj kmap;
 104        struct drm_gem_object gem;
 105        struct ttm_place placements[3];
 106        int pin_count;
 107};
 108
 109static inline struct bochs_bo *bochs_bo(struct ttm_buffer_object *bo)
 110{
 111        return container_of(bo, struct bochs_bo, bo);
 112}
 113
 114static inline struct bochs_bo *gem_to_bochs_bo(struct drm_gem_object *gem)
 115{
 116        return container_of(gem, struct bochs_bo, gem);
 117}
 118
 119#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
 120
 121static inline u64 bochs_bo_mmap_offset(struct bochs_bo *bo)
 122{
 123        return drm_vma_node_offset_addr(&bo->bo.vma_node);
 124}
 125
 126/* ---------------------------------------------------------------------- */
 127
 128/* bochs_hw.c */
 129int bochs_hw_init(struct drm_device *dev, uint32_t flags);
 130void bochs_hw_fini(struct drm_device *dev);
 131
 132void bochs_hw_setmode(struct bochs_device *bochs,
 133                      struct drm_display_mode *mode);
 134void bochs_hw_setbase(struct bochs_device *bochs,
 135                      int x, int y, u64 addr);
 136
 137/* bochs_mm.c */
 138int bochs_mm_init(struct bochs_device *bochs);
 139void bochs_mm_fini(struct bochs_device *bochs);
 140int bochs_mmap(struct file *filp, struct vm_area_struct *vma);
 141
 142int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel,
 143                     struct drm_gem_object **obj);
 144int bochs_gem_init_object(struct drm_gem_object *obj);
 145void bochs_gem_free_object(struct drm_gem_object *obj);
 146int bochs_dumb_create(struct drm_file *file, struct drm_device *dev,
 147                      struct drm_mode_create_dumb *args);
 148int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
 149                           uint32_t handle, uint64_t *offset);
 150
 151int bochs_framebuffer_init(struct drm_device *dev,
 152                           struct bochs_framebuffer *gfb,
 153                           const struct drm_mode_fb_cmd2 *mode_cmd,
 154                           struct drm_gem_object *obj);
 155int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag, u64 *gpu_addr);
 156int bochs_bo_unpin(struct bochs_bo *bo);
 157
 158extern const struct drm_mode_config_funcs bochs_mode_funcs;
 159
 160/* bochs_kms.c */
 161int bochs_kms_init(struct bochs_device *bochs);
 162void bochs_kms_fini(struct bochs_device *bochs);
 163
 164/* bochs_fbdev.c */
 165int bochs_fbdev_init(struct bochs_device *bochs);
 166void bochs_fbdev_fini(struct bochs_device *bochs);
 167