drivers/gpu/drm/bochs/bochs.h

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