1 #ifndef _LINUX_SVGA_H
2 #define _LINUX_SVGA_H
3
4 #include <linux/pci.h>
5 #include <video/vga.h>
6
7 /* Terminator for register set */
8
9 #define VGA_REGSET_END_VAL 0xFF
10 #define VGA_REGSET_END {VGA_REGSET_END_VAL, 0, 0}
11
12 struct vga_regset {
13 u8 regnum;
14 u8 lowbit;
15 u8 highbit;
16 };
17
18 /* ------------------------------------------------------------------------- */
19
20 #define SVGA_FORMAT_END_VAL 0xFFFF
21 #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}
22
23 struct svga_fb_format {
24 /* var part */
25 u32 bits_per_pixel;
26 struct fb_bitfield red;
27 struct fb_bitfield green;
28 struct fb_bitfield blue;
29 struct fb_bitfield transp;
30 u32 nonstd;
31 /* fix part */
32 u32 type;
33 u32 type_aux;
34 u32 visual;
35 u32 xpanstep;
36 u32 xresstep;
37 };
38
39 struct svga_timing_regs {
40 const struct vga_regset *h_total_regs;
41 const struct vga_regset *h_display_regs;
42 const struct vga_regset *h_blank_start_regs;
43 const struct vga_regset *h_blank_end_regs;
44 const struct vga_regset *h_sync_start_regs;
45 const struct vga_regset *h_sync_end_regs;
46
47 const struct vga_regset *v_total_regs;
48 const struct vga_regset *v_display_regs;
49 const struct vga_regset *v_blank_start_regs;
50 const struct vga_regset *v_blank_end_regs;
51 const struct vga_regset *v_sync_start_regs;
52 const struct vga_regset *v_sync_end_regs;
53 };
54
55 struct svga_pll {
56 u16 m_min;
57 u16 m_max;
58 u16 n_min;
59 u16 n_max;
60 u16 r_min;
61 u16 r_max; /* r_max < 32 */
62 u32 f_vco_min;
63 u32 f_vco_max;
64 u32 f_base;
65 };
66
67
68 /* Write a value to the attribute register */
69
svga_wattr(void __iomem * regbase,u8 index,u8 data)70 static inline void svga_wattr(void __iomem *regbase, u8 index, u8 data)
71 {
72 vga_r(regbase, VGA_IS1_RC);
73 vga_w(regbase, VGA_ATT_IW, index);
74 vga_w(regbase, VGA_ATT_W, data);
75 }
76
77 /* Write a value to a sequence register with a mask */
78
svga_wseq_mask(void __iomem * regbase,u8 index,u8 data,u8 mask)79 static inline void svga_wseq_mask(void __iomem *regbase, u8 index, u8 data, u8 mask)
80 {
81 vga_wseq(regbase, index, (data & mask) | (vga_rseq(regbase, index) & ~mask));
82 }
83
84 /* Write a value to a CRT register with a mask */
85
svga_wcrt_mask(void __iomem * regbase,u8 index,u8 data,u8 mask)86 static inline void svga_wcrt_mask(void __iomem *regbase, u8 index, u8 data, u8 mask)
87 {
88 vga_wcrt(regbase, index, (data & mask) | (vga_rcrt(regbase, index) & ~mask));
89 }
90
svga_primary_device(struct pci_dev * dev)91 static inline int svga_primary_device(struct pci_dev *dev)
92 {
93 u16 flags;
94 pci_read_config_word(dev, PCI_COMMAND, &flags);
95 return (flags & PCI_COMMAND_IO);
96 }
97
98
99 void svga_wcrt_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value);
100 void svga_wseq_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value);
101
102 void svga_set_default_gfx_regs(void __iomem *regbase);
103 void svga_set_default_atc_regs(void __iomem *regbase);
104 void svga_set_default_seq_regs(void __iomem *regbase);
105 void svga_set_default_crt_regs(void __iomem *regbase);
106 void svga_set_textmode_vga_regs(void __iomem *regbase);
107
108 void svga_settile(struct fb_info *info, struct fb_tilemap *map);
109 void svga_tilecopy(struct fb_info *info, struct fb_tilearea *area);
110 void svga_tilefill(struct fb_info *info, struct fb_tilerect *rect);
111 void svga_tileblit(struct fb_info *info, struct fb_tileblit *blit);
112 void svga_tilecursor(void __iomem *regbase, struct fb_info *info, struct fb_tilecursor *cursor);
113 int svga_get_tilemax(struct fb_info *info);
114 void svga_get_caps(struct fb_info *info, struct fb_blit_caps *caps,
115 struct fb_var_screeninfo *var);
116
117 int svga_compute_pll(const struct svga_pll *pll, u32 f_wanted, u16 *m, u16 *n, u16 *r, int node);
118 int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node);
119 void svga_set_timings(void __iomem *regbase, const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, u32 hmul, u32 hdiv, u32 vmul, u32 vdiv, u32 hborder, int node);
120
121 int svga_match_format(const struct svga_fb_format *frm, struct fb_var_screeninfo *var, struct fb_fix_screeninfo *fix);
122
123 #endif /* _LINUX_SVGA_H */
124
125