LXR linux/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
  49enum bochs_types {
  50        BOCHS_QEMU_STDVGA,
  51        BOCHS_UNKNOWN,
  52};
  53
  54struct 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        /* fbdev */
  85        struct {
  86                struct drm_framebuffer *fb;
  87                struct drm_fb_helper helper;
  88        } fb;
  89};
  90
  91struct bochs_bo {
  92        struct ttm_buffer_object bo;
  93        struct ttm_placement placement;
  94        struct ttm_bo_kmap_obj kmap;
  95        struct drm_gem_object gem;
  96        struct ttm_place placements[3];
  97        int pin_count;
  98};
  99
 100static inline struct bochs_bo *bochs_bo(struct ttm_buffer_object *bo)
 101{
 102        return container_of(bo, struct bochs_bo, bo);
 103}
 104
 105static inline struct bochs_bo *gem_to_bochs_bo(struct drm_gem_object *gem)
 106{
 107        return container_of(gem, struct bochs_bo, gem);
 108}
 109
 110#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
 111
 112static inline u64 bochs_bo_mmap_offset(struct bochs_bo *bo)
 113{
 114        return drm_vma_node_offset_addr(&bo->bo.vma_node);
 115}
 116
 117/* ---------------------------------------------------------------------- */
 118
 119/* bochs_hw.c */
 120int bochs_hw_init(struct drm_device *dev);
 121void bochs_hw_fini(struct drm_device *dev);
 122
 123void bochs_hw_setmode(struct bochs_device *bochs,
 124                      struct drm_display_mode *mode,
 125                      const struct drm_format_info *format);
 126void bochs_hw_setbase(struct bochs_device *bochs,
 127                      int x, int y, u64 addr);
 128int bochs_hw_load_edid(struct bochs_device *bochs);
 129
 130/* bochs_mm.c */
 131int bochs_mm_init(struct bochs_device *bochs);
 132void bochs_mm_fini(struct bochs_device *bochs);
 133int bochs_mmap(struct file *filp, struct vm_area_struct *vma);
 134
 135int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel,
 136                     struct drm_gem_object **obj);
 137int bochs_gem_init_object(struct drm_gem_object *obj);
 138void bochs_gem_free_object(struct drm_gem_object *obj);
 139int bochs_dumb_create(struct drm_file *file, struct drm_device *dev,
 140                      struct drm_mode_create_dumb *args);
 141int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
 142                           uint32_t handle, uint64_t *offset);
 143
 144int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag, u64 *gpu_addr);
 145int bochs_bo_unpin(struct bochs_bo *bo);
 146
 147/* bochs_kms.c */
 148int bochs_kms_init(struct bochs_device *bochs);
 149void bochs_kms_fini(struct bochs_device *bochs);
 150
 151/* bochs_fbdev.c */
 152int bochs_fbdev_init(struct bochs_device *bochs);
 153void bochs_fbdev_fini(struct bochs_device *bochs);
 154
 155extern const struct drm_mode_config_funcs bochs_mode_funcs;
 156