1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _LINUX_SVGA_H 3 #define _LINUX_SVGA_H 4 5 #include <linux/pci.h> 6 #include <video/vga.h> 7 8 /* Terminator for register set */ 9 10 #define VGA_REGSET_END_VAL 0xFF 11 #define VGA_REGSET_END {VGA_REGSET_END_VAL, 0, 0} 12 13 struct vga_regset { 14 u8 regnum; 15 u8 lowbit; 16 u8 highbit; 17 }; 18 19 /* ------------------------------------------------------------------------- */ 20 21 #define SVGA_FORMAT_END_VAL 0xFFFF 22 #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} 23 24 struct svga_fb_format { 25 /* var part */ 26 u32 bits_per_pixel; 27 struct fb_bitfield red; 28 struct fb_bitfield green; 29 struct fb_bitfield blue; 30 struct fb_bitfield transp; 31 u32 nonstd; 32 /* fix part */ 33 u32 type; 34 u32 type_aux; 35 u32 visual; 36 u32 xpanstep; 37 u32 xresstep; 38 }; 39 40 struct svga_timing_regs { 41 const struct vga_regset *h_total_regs; 42 const struct vga_regset *h_display_regs; 43 const struct vga_regset *h_blank_start_regs; 44 const struct vga_regset *h_blank_end_regs; 45 const struct vga_regset *h_sync_start_regs; 46 const struct vga_regset *h_sync_end_regs; 47 48 const struct vga_regset *v_total_regs; 49 const struct vga_regset *v_display_regs; 50 const struct vga_regset *v_blank_start_regs; 51 const struct vga_regset *v_blank_end_regs; 52 const struct vga_regset *v_sync_start_regs; 53 const struct vga_regset *v_sync_end_regs; 54 }; 55 56 struct svga_pll { 57 u16 m_min; 58 u16 m_max; 59 u16 n_min; 60 u16 n_max; 61 u16 r_min; 62 u16 r_max; /* r_max < 32 */ 63 u32 f_vco_min; 64 u32 f_vco_max; 65 u32 f_base; 66 }; 67 68 69 /* Write a value to the attribute register */ 70 71 static inline void svga_wattr(void __iomem *regbase, u8 index, u8 data) 72 { 73 vga_r(regbase, VGA_IS1_RC); 74 vga_w(regbase, VGA_ATT_IW, index); 75 vga_w(regbase, VGA_ATT_W, data); 76 } 77 78 /* Write a value to a sequence register with a mask */ 79 80 static inline void svga_wseq_mask(void __iomem *regbase, u8 index, u8 data, u8 mask) 81 { 82 vga_wseq(regbase, index, (data & mask) | (vga_rseq(regbase, index) & ~mask)); 83 } 84 85 /* Write a value to a CRT register with a mask */ 86 87 static inline void svga_wcrt_mask(void __iomem *regbase, u8 index, u8 data, u8 mask) 88 { 89 vga_wcrt(regbase, index, (data & mask) | (vga_rcrt(regbase, index) & ~mask)); 90 } 91 92 static inline int svga_primary_device(struct pci_dev *dev) 93 { 94 u16 flags; 95 pci_read_config_word(dev, PCI_COMMAND, &flags); 96 return (flags & PCI_COMMAND_IO); 97 } 98 99 100 void svga_wcrt_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value); 101 void svga_wseq_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value); 102 103 void svga_set_default_gfx_regs(void __iomem *regbase); 104 void svga_set_default_atc_regs(void __iomem *regbase); 105 void svga_set_default_seq_regs(void __iomem *regbase); 106 void svga_set_default_crt_regs(void __iomem *regbase); 107 void svga_set_textmode_vga_regs(void __iomem *regbase); 108 109 void svga_settile(struct fb_info *info, struct fb_tilemap *map); 110 void svga_tilecopy(struct fb_info *info, struct fb_tilearea *area); 111 void svga_tilefill(struct fb_info *info, struct fb_tilerect *rect); 112 void svga_tileblit(struct fb_info *info, struct fb_tileblit *blit); 113 void svga_tilecursor(void __iomem *regbase, struct fb_info *info, struct fb_tilecursor *cursor); 114 int svga_get_tilemax(struct fb_info *info); 115 void svga_get_caps(struct fb_info *info, struct fb_blit_caps *caps, 116 struct fb_var_screeninfo *var); 117 118 int svga_compute_pll(const struct svga_pll *pll, u32 f_wanted, u16 *m, u16 *n, u16 *r, int node); 119 int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node); 120 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); 121 122 int svga_match_format(const struct svga_fb_format *frm, struct fb_var_screeninfo *var, struct fb_fix_screeninfo *fix); 123 124 #endif /* _LINUX_SVGA_H */ 125 126