1#include <linux/io.h>
  2#include <linux/console.h>
  3
  4#include <drm/drmP.h>
  5#include <drm/drm_crtc.h>
  6#include <drm/drm_crtc_helper.h>
  7#include <drm/drm_fb_helper.h>
  8
  9#include <drm/drm_gem.h>
 10
 11#include <ttm/ttm_bo_driver.h>
 12#include <ttm/ttm_page_alloc.h>
 13
 14/* ---------------------------------------------------------------------- */
 15
 16#define VBE_DISPI_IOPORT_INDEX           0x01CE
 17#define VBE_DISPI_IOPORT_DATA            0x01CF
 18
 19#define VBE_DISPI_INDEX_ID               0x0
 20#define VBE_DISPI_INDEX_XRES             0x1
 21#define VBE_DISPI_INDEX_YRES             0x2
 22#define VBE_DISPI_INDEX_BPP              0x3
 23#define VBE_DISPI_INDEX_ENABLE           0x4
 24#define VBE_DISPI_INDEX_BANK             0x5
 25#define VBE_DISPI_INDEX_VIRT_WIDTH       0x6
 26#define VBE_DISPI_INDEX_VIRT_HEIGHT      0x7
 27#define VBE_DISPI_INDEX_X_OFFSET         0x8
 28#define VBE_DISPI_INDEX_Y_OFFSET         0x9
 29#define VBE_DISPI_INDEX_VIDEO_MEMORY_64K 0xa
 30
 31#define VBE_DISPI_ID0                    0xB0C0
 32#define VBE_DISPI_ID1                    0xB0C1
 33#define VBE_DISPI_ID2                    0xB0C2
 34#define VBE_DISPI_ID3                    0xB0C3
 35#define VBE_DISPI_ID4                    0xB0C4
 36#define VBE_DISPI_ID5                    0xB0C5
 37
 38#define VBE_DISPI_DISABLED               0x00
 39#define VBE_DISPI_ENABLED                0x01
 40#define VBE_DISPI_GETCAPS                0x02
 41#define VBE_DISPI_8BIT_DAC               0x20
 42#define VBE_DISPI_LFB_ENABLED            0x40
 43#define VBE_DISPI_NOCLEARMEM             0x80
 44
 45/* ---------------------------------------------------------------------- */
 46
 47enum bochs_types {
 48	BOCHS_QEMU_STDVGA,
 49	BOCHS_UNKNOWN,
 50};
 51
 52struct bochs_framebuffer {
 53	struct drm_framebuffer base;
 54	struct drm_gem_object *obj;
 55};
 56
 57struct bochs_device {
 58	/* hw */
 59	void __iomem   *mmio;
 60	int            ioports;
 61	void __iomem   *fb_map;
 62	unsigned long  fb_base;
 63	unsigned long  fb_size;
 64
 65	/* mode */
 66	u16 xres;
 67	u16 yres;
 68	u16 yres_virtual;
 69	u32 stride;
 70	u32 bpp;
 71
 72	/* drm */
 73	struct drm_device  *dev;
 74	struct drm_crtc crtc;
 75	struct drm_encoder encoder;
 76	struct drm_connector connector;
 77	bool mode_config_initialized;
 78
 79	/* ttm */
 80	struct {
 81		struct drm_global_reference mem_global_ref;
 82		struct ttm_bo_global_ref bo_global_ref;
 83		struct ttm_bo_device bdev;
 84		bool initialized;
 85	} ttm;
 86
 87	/* fbdev */
 88	struct {
 89		struct bochs_framebuffer gfb;
 90		struct drm_fb_helper helper;
 91		int size;
 92		bool initialized;
 93	} fb;
 94};
 95
 96#define to_bochs_framebuffer(x) container_of(x, struct bochs_framebuffer, base)
 97
 98struct bochs_bo {
 99	struct ttm_buffer_object bo;
100	struct ttm_placement placement;
101	struct ttm_bo_kmap_obj kmap;
102	struct drm_gem_object gem;
103	struct ttm_place placements[3];
104	int pin_count;
105};
106
107static inline struct bochs_bo *bochs_bo(struct ttm_buffer_object *bo)
108{
109	return container_of(bo, struct bochs_bo, bo);
110}
111
112static inline struct bochs_bo *gem_to_bochs_bo(struct drm_gem_object *gem)
113{
114	return container_of(gem, struct bochs_bo, gem);
115}
116
117#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
118
119static inline u64 bochs_bo_mmap_offset(struct bochs_bo *bo)
120{
121	return drm_vma_node_offset_addr(&bo->bo.vma_node);
122}
123
124/* ---------------------------------------------------------------------- */
125
126/* bochs_hw.c */
127int bochs_hw_init(struct drm_device *dev, uint32_t flags);
128void bochs_hw_fini(struct drm_device *dev);
129
130void bochs_hw_setmode(struct bochs_device *bochs,
131		      struct drm_display_mode *mode);
132void bochs_hw_setbase(struct bochs_device *bochs,
133		      int x, int y, u64 addr);
134
135/* bochs_mm.c */
136int bochs_mm_init(struct bochs_device *bochs);
137void bochs_mm_fini(struct bochs_device *bochs);
138int bochs_mmap(struct file *filp, struct vm_area_struct *vma);
139
140int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel,
141		     struct drm_gem_object **obj);
142int bochs_gem_init_object(struct drm_gem_object *obj);
143void bochs_gem_free_object(struct drm_gem_object *obj);
144int bochs_dumb_create(struct drm_file *file, struct drm_device *dev,
145		      struct drm_mode_create_dumb *args);
146int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
147			   uint32_t handle, uint64_t *offset);
148
149int bochs_framebuffer_init(struct drm_device *dev,
150			   struct bochs_framebuffer *gfb,
151			   const struct drm_mode_fb_cmd2 *mode_cmd,
152			   struct drm_gem_object *obj);
153int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag, u64 *gpu_addr);
154int bochs_bo_unpin(struct bochs_bo *bo);
155
156extern const struct drm_mode_config_funcs bochs_mode_funcs;
157
158/* bochs_kms.c */
159int bochs_kms_init(struct bochs_device *bochs);
160void bochs_kms_fini(struct bochs_device *bochs);
161
162/* bochs_fbdev.c */
163int bochs_fbdev_init(struct bochs_device *bochs);
164void bochs_fbdev_fini(struct bochs_device *bochs);