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
  49 enum bochs_types {
  50         BOCHS_QEMU_STDVGA,
  51         BOCHS_UNKNOWN,
  52 };
  53
  54 struct bochs_device {
  55         /* hw */
  56         void __iomem   *mmio;
  57         int            ioports;
  58         void __iomem   *fb_map;
  59         unsigned long  fb_base;
  60         unsigned long  fb_size;
  61         unsigned long  qext_size;
  62
  63         /* mode */
  64         u16 xres;
  65         u16 yres;
  66         u16 yres_virtual;
  67         u32 stride;
  68         u32 bpp;
  69         struct edid *edid;
  70
  71         /* drm */
  72         struct drm_device  *dev;
  73         struct drm_crtc crtc;
  74         struct drm_encoder encoder;
  75         struct drm_connector connector;
  76         bool mode_config_initialized;
  77
  78         /* ttm */
  79         struct {
  80                 struct ttm_bo_device bdev;
  81                 bool initialized;
  82         } ttm;
  83 };
  84
  85 struct bochs_bo {
  86         struct ttm_buffer_object bo;
  87         struct ttm_placement placement;
  88         struct ttm_bo_kmap_obj kmap;
  89         struct drm_gem_object gem;
  90         struct ttm_place placements[3];
  91         int pin_count;
  92 };
  93
  94 static inline struct bochs_bo *bochs_bo(struct ttm_buffer_object *bo)
  95 {
  96         return container_of(bo, struct bochs_bo, bo);
  97 }
  98
  99 static inline struct bochs_bo *gem_to_bochs_bo(struct drm_gem_object *gem)
 100 {
 101         return container_of(gem, struct bochs_bo, gem);
 102 }
 103
 104 #define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
 105
 106 static inline u64 bochs_bo_mmap_offset(struct bochs_bo *bo)
 107 {
 108         return drm_vma_node_offset_addr(&bo->bo.vma_node);
 109 }
 110
 111 /* ---------------------------------------------------------------------- */
 112
 113 /* bochs_hw.c */
 114 int bochs_hw_init(struct drm_device *dev);
 115 void bochs_hw_fini(struct drm_device *dev);
 116
 117 void bochs_hw_setmode(struct bochs_device *bochs,
 118                       struct drm_display_mode *mode);
 119 void bochs_hw_setformat(struct bochs_device *bochs,
 120                         const struct drm_format_info *format);
 121 void bochs_hw_setbase(struct bochs_device *bochs,
 122                       int x, int y, u64 addr);
 123 int bochs_hw_load_edid(struct bochs_device *bochs);
 124
 125 /* bochs_mm.c */
 126 int bochs_mm_init(struct bochs_device *bochs);
 127 void bochs_mm_fini(struct bochs_device *bochs);
 128 int bochs_mmap(struct file *filp, struct vm_area_struct *vma);
 129
 130 int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel,
 131                      struct drm_gem_object **obj);
 132 int bochs_gem_init_object(struct drm_gem_object *obj);
 133 void bochs_gem_free_object(struct drm_gem_object *obj);
 134 int bochs_dumb_create(struct drm_file *file, struct drm_device *dev,
 135                       struct drm_mode_create_dumb *args);
 136 int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
 137                            uint32_t handle, uint64_t *offset);
 138
 139 int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag);
 140 int bochs_bo_unpin(struct bochs_bo *bo);
 141
 142 int bochs_gem_prime_pin(struct drm_gem_object *obj);
 143 void bochs_gem_prime_unpin(struct drm_gem_object *obj);
 144 void *bochs_gem_prime_vmap(struct drm_gem_object *obj);
 145 void bochs_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
 146 int bochs_gem_prime_mmap(struct drm_gem_object *obj,
 147                          struct vm_area_struct *vma);
 148
 149 /* bochs_kms.c */
 150 int bochs_kms_init(struct bochs_device *bochs);
 151 void bochs_kms_fini(struct bochs_device *bochs);
 152
 153 /* bochs_fbdev.c */
 154 extern const struct drm_mode_config_funcs bochs_mode_funcs;