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_framebuffer {
  55         struct drm_framebuffer base;
  56         struct drm_gem_object *obj;
  57 };
  58
  59 struct 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
 100 struct 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
 109 static inline struct bochs_bo *bochs_bo(struct ttm_buffer_object *bo)
 110 {
 111         return container_of(bo, struct bochs_bo, bo);
 112 }
 113
 114 static 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
 121 static 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 */
 129 int bochs_hw_init(struct drm_device *dev, uint32_t flags);
 130 void bochs_hw_fini(struct drm_device *dev);
 131
 132 void bochs_hw_setmode(struct bochs_device *bochs,
 133                       struct drm_display_mode *mode);
 134 void bochs_hw_setbase(struct bochs_device *bochs,
 135                       int x, int y, u64 addr);
 136
 137 /* bochs_mm.c */
 138 int bochs_mm_init(struct bochs_device *bochs);
 139 void bochs_mm_fini(struct bochs_device *bochs);
 140 int bochs_mmap(struct file *filp, struct vm_area_struct *vma);
 141
 142 int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel,
 143                      struct drm_gem_object **obj);
 144 int bochs_gem_init_object(struct drm_gem_object *obj);
 145 void bochs_gem_free_object(struct drm_gem_object *obj);
 146 int bochs_dumb_create(struct drm_file *file, struct drm_device *dev,
 147                       struct drm_mode_create_dumb *args);
 148 int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
 149                            uint32_t handle, uint64_t *offset);
 150
 151 int 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);
 155 int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag, u64 *gpu_addr);
 156 int bochs_bo_unpin(struct bochs_bo *bo);
 157
 158 extern const struct drm_mode_config_funcs bochs_mode_funcs;
 159
 160 /* bochs_kms.c */
 161 int bochs_kms_init(struct bochs_device *bochs);
 162 void bochs_kms_fini(struct bochs_device *bochs);
 163
 164 /* bochs_fbdev.c */
 165 int bochs_fbdev_init(struct bochs_device *bochs);
 166 void bochs_fbdev_fini(struct bochs_device *bochs);