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