drivers/gpu/drm/bochs/bochs.h

   1 #include <linux/io.h>
   2 #include <linux/fb.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 <ttm/ttm_bo_driver.h>
  10 #include <ttm/ttm_page_alloc.h>
  11
  12 /* ---------------------------------------------------------------------- */
  13
  14 #define VBE_DISPI_IOPORT_INDEX           0x01CE
  15 #define VBE_DISPI_IOPORT_DATA            0x01CF
  16
  17 #define VBE_DISPI_INDEX_ID               0x0
  18 #define VBE_DISPI_INDEX_XRES             0x1
  19 #define VBE_DISPI_INDEX_YRES             0x2
  20 #define VBE_DISPI_INDEX_BPP              0x3
  21 #define VBE_DISPI_INDEX_ENABLE           0x4
  22 #define VBE_DISPI_INDEX_BANK             0x5
  23 #define VBE_DISPI_INDEX_VIRT_WIDTH       0x6
  24 #define VBE_DISPI_INDEX_VIRT_HEIGHT      0x7
  25 #define VBE_DISPI_INDEX_X_OFFSET         0x8
  26 #define VBE_DISPI_INDEX_Y_OFFSET         0x9
  27 #define VBE_DISPI_INDEX_VIDEO_MEMORY_64K 0xa
  28
  29 #define VBE_DISPI_ID0                    0xB0C0
  30 #define VBE_DISPI_ID1                    0xB0C1
  31 #define VBE_DISPI_ID2                    0xB0C2
  32 #define VBE_DISPI_ID3                    0xB0C3
  33 #define VBE_DISPI_ID4                    0xB0C4
  34 #define VBE_DISPI_ID5                    0xB0C5
  35
  36 #define VBE_DISPI_DISABLED               0x00
  37 #define VBE_DISPI_ENABLED                0x01
  38 #define VBE_DISPI_GETCAPS                0x02
  39 #define VBE_DISPI_8BIT_DAC               0x20
  40 #define VBE_DISPI_LFB_ENABLED            0x40
  41 #define VBE_DISPI_NOCLEARMEM             0x80
  42
  43 /* ---------------------------------------------------------------------- */
  44
  45 enum bochs_types {
  46         BOCHS_QEMU_STDVGA,
  47         BOCHS_UNKNOWN,
  48 };
  49
  50 struct bochs_framebuffer {
  51         struct drm_framebuffer base;
  52         struct drm_gem_object *obj;
  53 };
  54
  55 struct bochs_device {
  56         /* hw */
  57         void __iomem   *mmio;
  58         int            ioports;
  59         void __iomem   *fb_map;
  60         unsigned long  fb_base;
  61         unsigned long  fb_size;
  62
  63         /* mode */
  64         u16 xres;
  65         u16 yres;
  66         u16 yres_virtual;
  67         u32 stride;
  68         u32 bpp;
  69
  70         /* drm */
  71         struct drm_device  *dev;
  72         struct drm_crtc crtc;
  73         struct drm_encoder encoder;
  74         struct drm_connector connector;
  75         bool mode_config_initialized;
  76
  77         /* ttm */
  78         struct {
  79                 struct drm_global_reference mem_global_ref;
  80                 struct ttm_bo_global_ref bo_global_ref;
  81                 struct ttm_bo_device bdev;
  82                 bool initialized;
  83         } ttm;
  84
  85         /* fbdev */
  86         struct {
  87                 struct bochs_framebuffer gfb;
  88                 struct drm_fb_helper helper;
  89                 int size;
  90                 int x1, y1, x2, y2; /* dirty rect */
  91                 spinlock_t dirty_lock;
  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         u32 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                            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);