drivers/gpu/drm/bochs/bochs.h

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