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1/* SPDX-License-Identifier: GPL-2.0 */
2
3#include <linux/io.h>
4#include <linux/console.h>
5
6#include <drm/drm_crtc.h>
7#include <drm/drm_crtc_helper.h>
8#include <drm/drm_encoder.h>
9#include <drm/drm_fb_helper.h>
10#include <drm/drm_gem.h>
11#include <drm/drm_gem_vram_helper.h>
12#include <drm/drm_simple_kms_helper.h>
13#include <drm/drm_vram_mm_helper.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_device {
54 /* hw */
55 void __iomem *mmio;
56 int ioports;
57 void __iomem *fb_map;
58 unsigned long fb_base;
59 unsigned long fb_size;
60 unsigned long qext_size;
61
62 /* mode */
63 u16 xres;
64 u16 yres;
65 u16 yres_virtual;
66 u32 stride;
67 u32 bpp;
68 struct edid *edid;
69
70 /* drm */
71 struct drm_device *dev;
72 struct drm_simple_display_pipe pipe;
73 struct drm_connector connector;
74};
75
76/* ---------------------------------------------------------------------- */
77
78/* bochs_hw.c */
79int bochs_hw_init(struct drm_device *dev);
80void bochs_hw_fini(struct drm_device *dev);
81
82void bochs_hw_setmode(struct bochs_device *bochs,
83 struct drm_display_mode *mode);
84void bochs_hw_setformat(struct bochs_device *bochs,
85 const struct drm_format_info *format);
86void bochs_hw_setbase(struct bochs_device *bochs,
87 int x, int y, int stride, u64 addr);
88int bochs_hw_load_edid(struct bochs_device *bochs);
89
90/* bochs_mm.c */
91int bochs_mm_init(struct bochs_device *bochs);
92void bochs_mm_fini(struct bochs_device *bochs);
93
94/* bochs_kms.c */
95int bochs_kms_init(struct bochs_device *bochs);
96void bochs_kms_fini(struct bochs_device *bochs);
97
98/* bochs_fbdev.c */
99extern const struct drm_mode_config_funcs bochs_mode_funcs;
1/* SPDX-License-Identifier: GPL-2.0 */
2#include <linux/io.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_encoder.h>
9#include <drm/drm_fb_helper.h>
10
11#include <drm/drm_gem.h>
12
13#include <drm/ttm/ttm_bo_driver.h>
14#include <drm/ttm/ttm_page_alloc.h>
15
16/* ---------------------------------------------------------------------- */
17
18#define VBE_DISPI_IOPORT_INDEX 0x01CE
19#define VBE_DISPI_IOPORT_DATA 0x01CF
20
21#define VBE_DISPI_INDEX_ID 0x0
22#define VBE_DISPI_INDEX_XRES 0x1
23#define VBE_DISPI_INDEX_YRES 0x2
24#define VBE_DISPI_INDEX_BPP 0x3
25#define VBE_DISPI_INDEX_ENABLE 0x4
26#define VBE_DISPI_INDEX_BANK 0x5
27#define VBE_DISPI_INDEX_VIRT_WIDTH 0x6
28#define VBE_DISPI_INDEX_VIRT_HEIGHT 0x7
29#define VBE_DISPI_INDEX_X_OFFSET 0x8
30#define VBE_DISPI_INDEX_Y_OFFSET 0x9
31#define VBE_DISPI_INDEX_VIDEO_MEMORY_64K 0xa
32
33#define VBE_DISPI_ID0 0xB0C0
34#define VBE_DISPI_ID1 0xB0C1
35#define VBE_DISPI_ID2 0xB0C2
36#define VBE_DISPI_ID3 0xB0C3
37#define VBE_DISPI_ID4 0xB0C4
38#define VBE_DISPI_ID5 0xB0C5
39
40#define VBE_DISPI_DISABLED 0x00
41#define VBE_DISPI_ENABLED 0x01
42#define VBE_DISPI_GETCAPS 0x02
43#define VBE_DISPI_8BIT_DAC 0x20
44#define VBE_DISPI_LFB_ENABLED 0x40
45#define VBE_DISPI_NOCLEARMEM 0x80
46
47/* ---------------------------------------------------------------------- */
48
49enum bochs_types {
50 BOCHS_QEMU_STDVGA,
51 BOCHS_UNKNOWN,
52};
53
54struct bochs_framebuffer {
55 struct drm_framebuffer base;
56 struct drm_gem_object *obj;
57};
58
59struct bochs_device {
60 /* hw */
61 void __iomem *mmio;
62 int ioports;
63 void __iomem *fb_map;
64 unsigned long fb_base;
65 unsigned long fb_size;
66
67 /* mode */
68 u16 xres;
69 u16 yres;
70 u16 yres_virtual;
71 u32 stride;
72 u32 bpp;
73
74 /* drm */
75 struct drm_device *dev;
76 struct drm_crtc crtc;
77 struct drm_encoder encoder;
78 struct drm_connector connector;
79 bool mode_config_initialized;
80
81 /* ttm */
82 struct {
83 struct drm_global_reference mem_global_ref;
84 struct ttm_bo_global_ref bo_global_ref;
85 struct ttm_bo_device bdev;
86 bool initialized;
87 } ttm;
88
89 /* fbdev */
90 struct {
91 struct bochs_framebuffer gfb;
92 struct drm_fb_helper helper;
93 int size;
94 bool initialized;
95 } fb;
96};
97
98#define to_bochs_framebuffer(x) container_of(x, struct bochs_framebuffer, base)
99
100struct bochs_bo {
101 struct ttm_buffer_object bo;
102 struct ttm_placement placement;
103 struct ttm_bo_kmap_obj kmap;
104 struct drm_gem_object gem;
105 struct ttm_place placements[3];
106 int pin_count;
107};
108
109static inline struct bochs_bo *bochs_bo(struct ttm_buffer_object *bo)
110{
111 return container_of(bo, struct bochs_bo, bo);
112}
113
114static inline struct bochs_bo *gem_to_bochs_bo(struct drm_gem_object *gem)
115{
116 return container_of(gem, struct bochs_bo, gem);
117}
118
119#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
120
121static inline u64 bochs_bo_mmap_offset(struct bochs_bo *bo)
122{
123 return drm_vma_node_offset_addr(&bo->bo.vma_node);
124}
125
126/* ---------------------------------------------------------------------- */
127
128/* bochs_hw.c */
129int bochs_hw_init(struct drm_device *dev, uint32_t flags);
130void bochs_hw_fini(struct drm_device *dev);
131
132void bochs_hw_setmode(struct bochs_device *bochs,
133 struct drm_display_mode *mode);
134void bochs_hw_setbase(struct bochs_device *bochs,
135 int x, int y, u64 addr);
136
137/* bochs_mm.c */
138int bochs_mm_init(struct bochs_device *bochs);
139void bochs_mm_fini(struct bochs_device *bochs);
140int bochs_mmap(struct file *filp, struct vm_area_struct *vma);
141
142int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel,
143 struct drm_gem_object **obj);
144int bochs_gem_init_object(struct drm_gem_object *obj);
145void bochs_gem_free_object(struct drm_gem_object *obj);
146int bochs_dumb_create(struct drm_file *file, struct drm_device *dev,
147 struct drm_mode_create_dumb *args);
148int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
149 uint32_t handle, uint64_t *offset);
150
151int bochs_framebuffer_init(struct drm_device *dev,
152 struct bochs_framebuffer *gfb,
153 const struct drm_mode_fb_cmd2 *mode_cmd,
154 struct drm_gem_object *obj);
155int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag, u64 *gpu_addr);
156int bochs_bo_unpin(struct bochs_bo *bo);
157
158extern const struct drm_mode_config_funcs bochs_mode_funcs;
159
160/* bochs_kms.c */
161int bochs_kms_init(struct bochs_device *bochs);
162void bochs_kms_fini(struct bochs_device *bochs);
163
164/* bochs_fbdev.c */
165int bochs_fbdev_init(struct bochs_device *bochs);
166void bochs_fbdev_fini(struct bochs_device *bochs);