1 #ifndef _LINUX_SVGA_H
2 #define _LINUX_SVGA_H
3
4 #ifdef __KERNEL__
5
6 #include <linux/pci.h>
7 #include <video/vga.h>
8
9 /* Terminator for register set */
10
11 #define VGA_REGSET_END_VAL 0xFF
12 #define VGA_REGSET_END {VGA_REGSET_END_VAL, 0, 0}
13
14 struct vga_regset {
15 u8 regnum;
16 u8 lowbit;
17 u8 highbit;
18 };
19
20 /* ------------------------------------------------------------------------- */
21
22 #define SVGA_FORMAT_END_VAL 0xFFFF
23 #define SVGA_FORMAT_END {SVGA_FORMAT_END_VAL, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, 0, 0, 0, 0, 0, 0}
24
25 struct svga_fb_format {
26 /* var part */
27 u32 bits_per_pixel;
28 struct fb_bitfield red;
29 struct fb_bitfield green;
30 struct fb_bitfield blue;
31 struct fb_bitfield transp;
32 u32 nonstd;
33 /* fix part */
34 u32 type;
35 u32 type_aux;
36 u32 visual;
37 u32 xpanstep;
38 u32 xresstep;
39 };
40
41 struct svga_timing_regs {
42 const struct vga_regset *h_total_regs;
43 const struct vga_regset *h_display_regs;
44 const struct vga_regset *h_blank_start_regs;
45 const struct vga_regset *h_blank_end_regs;
46 const struct vga_regset *h_sync_start_regs;
47 const struct vga_regset *h_sync_end_regs;
48
49 const struct vga_regset *v_total_regs;
50 const struct vga_regset *v_display_regs;
51 const struct vga_regset *v_blank_start_regs;
52 const struct vga_regset *v_blank_end_regs;
53 const struct vga_regset *v_sync_start_regs;
54 const struct vga_regset *v_sync_end_regs;
55 };
56
57 struct svga_pll {
58 u16 m_min;
59 u16 m_max;
60 u16 n_min;
61 u16 n_max;
62 u16 r_min;
63 u16 r_max; /* r_max < 32 */
64 u32 f_vco_min;
65 u32 f_vco_max;
66 u32 f_base;
67 };
68
69
70 /* Write a value to the attribute register */
71
72 static inline void svga_wattr(u8 index, u8 data)
73 {
74 inb(0x3DA);
75 outb(index, 0x3C0);
76 outb(data, 0x3C0);
77 }
78
79 /* Write a value to a sequence register with a mask */
80
81 static inline void svga_wseq_mask(u8 index, u8 data, u8 mask)
82 {
83 vga_wseq(NULL, index, (data & mask) | (vga_rseq(NULL, index) & ~mask));
84 }
85
86 /* Write a value to a CRT register with a mask */
87
88 static inline void svga_wcrt_mask(u8 index, u8 data, u8 mask)
89 {
90 vga_wcrt(NULL, index, (data & mask) | (vga_rcrt(NULL, index) & ~mask));
91 }
92
93 static inline int svga_primary_device(struct pci_dev *dev)
94 {
95 u16 flags;
96 pci_read_config_word(dev, PCI_COMMAND, &flags);
97 return (flags & PCI_COMMAND_IO);
98 }
99
100
101 void svga_wcrt_multi(const struct vga_regset *regset, u32 value);
102 void svga_wseq_multi(const struct vga_regset *regset, u32 value);
103
104 void svga_set_default_gfx_regs(void);
105 void svga_set_default_atc_regs(void);
106 void svga_set_default_seq_regs(void);
107 void svga_set_default_crt_regs(void);
108 void svga_set_textmode_vga_regs(void);
109
110 void svga_settile(struct fb_info *info, struct fb_tilemap *map);
111 void svga_tilecopy(struct fb_info *info, struct fb_tilearea *area);
112 void svga_tilefill(struct fb_info *info, struct fb_tilerect *rect);
113 void svga_tileblit(struct fb_info *info, struct fb_tileblit *blit);
114 void svga_tilecursor(struct fb_info *info, struct fb_tilecursor *cursor);
115 int svga_get_tilemax(struct fb_info *info);
116 void svga_get_caps(struct fb_info *info, struct fb_blit_caps *caps,
117 struct fb_var_screeninfo *var);
118
119 int svga_compute_pll(const struct svga_pll *pll, u32 f_wanted, u16 *m, u16 *n, u16 *r, int node);
120 int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node);
121 void svga_set_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, u32 hmul, u32 hdiv, u32 vmul, u32 vdiv, u32 hborder, int node);
122
123 int svga_match_format(const struct svga_fb_format *frm, struct fb_var_screeninfo *var, struct fb_fix_screeninfo *fix);
124
125 #endif /* __KERNEL__ */
126 #endif /* _LINUX_SVGA_H */
127
128
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