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
 48enum bochs_types {
 49	BOCHS_QEMU_STDVGA,
 50	BOCHS_UNKNOWN,
 51};
 52
 53struct bochs_framebuffer {
 54	struct drm_framebuffer base;
 55	struct drm_gem_object *obj;
 56};
 57
 58struct 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
 99struct 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
108static inline struct bochs_bo *bochs_bo(struct ttm_buffer_object *bo)
109{
110	return container_of(bo, struct bochs_bo, bo);
111}
112
113static 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
120static 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 */
128int bochs_hw_init(struct drm_device *dev, uint32_t flags);
129void bochs_hw_fini(struct drm_device *dev);
130
131void bochs_hw_setmode(struct bochs_device *bochs,
132		      struct drm_display_mode *mode);
133void bochs_hw_setbase(struct bochs_device *bochs,
134		      int x, int y, u64 addr);
135
136/* bochs_mm.c */
137int bochs_mm_init(struct bochs_device *bochs);
138void bochs_mm_fini(struct bochs_device *bochs);
139int bochs_mmap(struct file *filp, struct vm_area_struct *vma);
140
141int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel,
142		     struct drm_gem_object **obj);
143int bochs_gem_init_object(struct drm_gem_object *obj);
144void bochs_gem_free_object(struct drm_gem_object *obj);
145int bochs_dumb_create(struct drm_file *file, struct drm_device *dev,
146		      struct drm_mode_create_dumb *args);
147int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
148			   uint32_t handle, uint64_t *offset);
149
150int 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);
154int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag, u64 *gpu_addr);
155int bochs_bo_unpin(struct bochs_bo *bo);
156
157extern const struct drm_mode_config_funcs bochs_mode_funcs;
158
159/* bochs_kms.c */
160int bochs_kms_init(struct bochs_device *bochs);
161void bochs_kms_fini(struct bochs_device *bochs);
162
163/* bochs_fbdev.c */
164int bochs_fbdev_init(struct bochs_device *bochs);
165void bochs_fbdev_fini(struct bochs_device *bochs);