tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#include <drm/drm_simple_kms_helper.h>
11
12#include <drm/drm_gem.h>
13
14#include <drm/ttm/ttm_bo_driver.h>
15#include <drm/ttm/ttm_page_alloc.h>
16
17/* ---------------------------------------------------------------------- */
18
19#define VBE_DISPI_IOPORT_INDEX 0x01CE
20#define VBE_DISPI_IOPORT_DATA 0x01CF
21
22#define VBE_DISPI_INDEX_ID 0x0
23#define VBE_DISPI_INDEX_XRES 0x1
24#define VBE_DISPI_INDEX_YRES 0x2
25#define VBE_DISPI_INDEX_BPP 0x3
26#define VBE_DISPI_INDEX_ENABLE 0x4
27#define VBE_DISPI_INDEX_BANK 0x5
28#define VBE_DISPI_INDEX_VIRT_WIDTH 0x6
29#define VBE_DISPI_INDEX_VIRT_HEIGHT 0x7
30#define VBE_DISPI_INDEX_X_OFFSET 0x8
31#define VBE_DISPI_INDEX_Y_OFFSET 0x9
32#define VBE_DISPI_INDEX_VIDEO_MEMORY_64K 0xa
33
34#define VBE_DISPI_ID0 0xB0C0
35#define VBE_DISPI_ID1 0xB0C1
36#define VBE_DISPI_ID2 0xB0C2
37#define VBE_DISPI_ID3 0xB0C3
38#define VBE_DISPI_ID4 0xB0C4
39#define VBE_DISPI_ID5 0xB0C5
40
41#define VBE_DISPI_DISABLED 0x00
42#define VBE_DISPI_ENABLED 0x01
43#define VBE_DISPI_GETCAPS 0x02
44#define VBE_DISPI_8BIT_DAC 0x20
45#define VBE_DISPI_LFB_ENABLED 0x40
46#define VBE_DISPI_NOCLEARMEM 0x80
47
48/* ---------------------------------------------------------------------- */
49
50enum bochs_types {
51 BOCHS_QEMU_STDVGA,
52 BOCHS_UNKNOWN,
53};
54
55struct bochs_device {
56 /* hw */
57 void __iomem *mmio;
58 int ioports;
59 void __iomem *fb_map;
60 unsigned long fb_base;
61 unsigned long fb_size;
62 unsigned long qext_size;
63
64 /* mode */
65 u16 xres;
66 u16 yres;
67 u16 yres_virtual;
68 u32 stride;
69 u32 bpp;
70 struct edid *edid;
71
72 /* drm */
73 struct drm_device *dev;
74 struct drm_simple_display_pipe pipe;
75 struct drm_connector connector;
76
77 /* ttm */
78 struct {
79 struct ttm_bo_device bdev;
80 bool initialized;
81 } ttm;
82};
83
84struct bochs_bo {
85 struct ttm_buffer_object bo;
86 struct ttm_placement placement;
87 struct ttm_bo_kmap_obj kmap;
88 struct drm_gem_object gem;
89 struct ttm_place placements[3];
90 int pin_count;
91};
92
93static inline struct bochs_bo *bochs_bo(struct ttm_buffer_object *bo)
94{
95 return container_of(bo, struct bochs_bo, bo);
96}
97
98static inline struct bochs_bo *gem_to_bochs_bo(struct drm_gem_object *gem)
99{
100 return container_of(gem, struct bochs_bo, gem);
101}
102
103static inline u64 bochs_bo_mmap_offset(struct bochs_bo *bo)
104{
105 return drm_vma_node_offset_addr(&bo->bo.vma_node);
106}
107
108/* ---------------------------------------------------------------------- */
109
110/* bochs_hw.c */
111int bochs_hw_init(struct drm_device *dev);
112void bochs_hw_fini(struct drm_device *dev);
113
114void bochs_hw_setmode(struct bochs_device *bochs,
115 struct drm_display_mode *mode);
116void bochs_hw_setformat(struct bochs_device *bochs,
117 const struct drm_format_info *format);
118void bochs_hw_setbase(struct bochs_device *bochs,
119 int x, int y, u64 addr);
120int bochs_hw_load_edid(struct bochs_device *bochs);
121
122/* bochs_mm.c */
123int bochs_mm_init(struct bochs_device *bochs);
124void bochs_mm_fini(struct bochs_device *bochs);
125int bochs_mmap(struct file *filp, struct vm_area_struct *vma);
126
127int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel,
128 struct drm_gem_object **obj);
129int bochs_gem_init_object(struct drm_gem_object *obj);
130void bochs_gem_free_object(struct drm_gem_object *obj);
131int bochs_dumb_create(struct drm_file *file, struct drm_device *dev,
132 struct drm_mode_create_dumb *args);
133int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
134 uint32_t handle, uint64_t *offset);
135
136int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag);
137int bochs_bo_unpin(struct bochs_bo *bo);
138
139int bochs_gem_prime_pin(struct drm_gem_object *obj);
140void bochs_gem_prime_unpin(struct drm_gem_object *obj);
141void *bochs_gem_prime_vmap(struct drm_gem_object *obj);
142void bochs_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
143int bochs_gem_prime_mmap(struct drm_gem_object *obj,
144 struct vm_area_struct *vma);
145
146/* bochs_kms.c */
147int bochs_kms_init(struct bochs_device *bochs);
148void bochs_kms_fini(struct bochs_device *bochs);
149
150/* bochs_fbdev.c */
151extern const struct drm_mode_config_funcs bochs_mode_funcs;