tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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);