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			   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);
166