1#ifndef _UVESAFB_H
2#define _UVESAFB_H
3
4#include <uapi/video/uvesafb.h>
5
6
7/* VBE CRTC Info Block */
8struct vbe_crtc_ib {
9	u16 horiz_total;
10	u16 horiz_start;
11	u16 horiz_end;
12	u16 vert_total;
13	u16 vert_start;
14	u16 vert_end;
15	u8  flags;
16	u32 pixel_clock;
17	u16 refresh_rate;
18	u8  reserved[40];
19} __attribute__ ((packed));
20
21#define VBE_MODE_VGACOMPAT	0x20
22#define VBE_MODE_COLOR		0x08
23#define VBE_MODE_SUPPORTEDHW	0x01
24#define VBE_MODE_GRAPHICS	0x10
25#define VBE_MODE_LFB		0x80
26
27#define VBE_MODE_MASK		(VBE_MODE_COLOR | VBE_MODE_SUPPORTEDHW | \
28				VBE_MODE_GRAPHICS | VBE_MODE_LFB)
29
30/* VBE Mode Info Block */
31struct vbe_mode_ib {
32	/* for all VBE revisions */
33	u16 mode_attr;
34	u8  winA_attr;
35	u8  winB_attr;
36	u16 win_granularity;
37	u16 win_size;
38	u16 winA_seg;
39	u16 winB_seg;
40	u32 win_func_ptr;
41	u16 bytes_per_scan_line;
42
43	/* for VBE 1.2+ */
44	u16 x_res;
45	u16 y_res;
46	u8  x_char_size;
47	u8  y_char_size;
48	u8  planes;
49	u8  bits_per_pixel;
50	u8  banks;
51	u8  memory_model;
52	u8  bank_size;
53	u8  image_pages;
54	u8  reserved1;
55
56	/* Direct color fields for direct/6 and YUV/7 memory models. */
57	/* Offsets are bit positions of lsb in the mask. */
58	u8  red_len;
59	u8  red_off;
60	u8  green_len;
61	u8  green_off;
62	u8  blue_len;
63	u8  blue_off;
64	u8  rsvd_len;
65	u8  rsvd_off;
66	u8  direct_color_info;	/* direct color mode attributes */
67
68	/* for VBE 2.0+ */
69	u32 phys_base_ptr;
70	u8  reserved2[6];
71
72	/* for VBE 3.0+ */
73	u16 lin_bytes_per_scan_line;
74	u8  bnk_image_pages;
75	u8  lin_image_pages;
76	u8  lin_red_len;
77	u8  lin_red_off;
78	u8  lin_green_len;
79	u8  lin_green_off;
80	u8  lin_blue_len;
81	u8  lin_blue_off;
82	u8  lin_rsvd_len;
83	u8  lin_rsvd_off;
84	u32 max_pixel_clock;
85	u16 mode_id;
86	u8  depth;
87} __attribute__ ((packed));
88
89#define UVESAFB_DEFAULT_MODE "640x480-16"
90
91/* How long to wait for a reply from userspace [ms] */
92#define UVESAFB_TIMEOUT 5000
93
94/* Max number of concurrent tasks */
95#define UVESAFB_TASKS_MAX 16
96
97#define dac_reg	(0x3c8)
98#define dac_val	(0x3c9)
99
100struct uvesafb_pal_entry {
101	u_char blue, green, red, pad;
102} __attribute__ ((packed));
103
104struct uvesafb_ktask {
105	struct uvesafb_task t;
106	void *buf;
107	struct completion *done;
108	u32 ack;
109};
110
111static int uvesafb_exec(struct uvesafb_ktask *tsk);
112
113#define UVESAFB_EXACT_RES	1
114#define UVESAFB_EXACT_DEPTH	2
115
116struct uvesafb_par {
117	struct vbe_ib vbe_ib;		/* VBE Info Block */
118	struct vbe_mode_ib *vbe_modes;	/* list of supported VBE modes */
119	int vbe_modes_cnt;
120
121	u8 nocrtc;
122	u8 ypan;			/* 0 - nothing, 1 - ypan, 2 - ywrap */
123	u8 pmi_setpal;			/* PMI for palette changes */
124	u16 *pmi_base;			/* protected mode interface location */
125	void *pmi_start;
126	void *pmi_pal;
127	u8 *vbe_state_orig;		/*
128					 * original hardware state, before the
129					 * driver was loaded
130					 */
131	u8 *vbe_state_saved;		/* state saved by fb_save_state */
132	int vbe_state_size;
133	atomic_t ref_count;
134
135	int mode_idx;
136	struct vbe_crtc_ib crtc;
137	int mtrr_handle;
138};
139
140#endif /* _UVESAFB_H */
141