Annotation of sys/dev/ic/vgavar.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: vgavar.h,v 1.8 2002/07/12 20:17:03 mickey Exp $ */
! 2: /* $NetBSD: vgavar.h,v 1.4 2000/06/17 07:11:50 soda Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1995, 1996 Carnegie-Mellon University.
! 6: * All rights reserved.
! 7: *
! 8: * Author: Chris G. Demetriou
! 9: *
! 10: * Permission to use, copy, modify and distribute this software and
! 11: * its documentation is hereby granted, provided that both the copyright
! 12: * notice and this permission notice appear in all copies of the
! 13: * software, derivative works or modified versions, and any portions
! 14: * thereof, and that both notices appear in supporting documentation.
! 15: *
! 16: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
! 17: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
! 18: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
! 19: *
! 20: * Carnegie Mellon requests users of this software to return to
! 21: *
! 22: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
! 23: * School of Computer Science
! 24: * Carnegie Mellon University
! 25: * Pittsburgh PA 15213-3890
! 26: *
! 27: * any improvements or extensions that they make and grant Carnegie the
! 28: * rights to redistribute these changes.
! 29: */
! 30:
! 31: #include <sys/timeout.h>
! 32:
! 33: struct vga_handle {
! 34: struct pcdisplay_handle vh_ph;
! 35: bus_space_handle_t vh_ioh_vga, vh_allmemh;
! 36: int vh_mono;
! 37: };
! 38: #define vh_iot vh_ph.ph_iot
! 39: #define vh_memt vh_ph.ph_memt
! 40: #define vh_ioh_6845 vh_ph.ph_ioh_6845
! 41: #define vh_memh vh_ph.ph_memh
! 42:
! 43: struct vga_config {
! 44: struct vga_handle hdl;
! 45:
! 46: struct device *vc_softc;
! 47: int vc_type;
! 48: int nscreens;
! 49: LIST_HEAD(, vgascreen) screens;
! 50: struct vgascreen *active; /* current display */
! 51: const struct wsscreen_descr *currenttype;
! 52: int currentfontset1, currentfontset2;
! 53:
! 54: struct vgafont *vc_fonts[8];
! 55:
! 56: struct vgascreen *wantedscreen;
! 57: void (*switchcb)(void *, int, int);
! 58: void *switchcbarg;
! 59:
! 60: paddr_t (*vc_mmap)(void *, off_t, int);
! 61:
! 62: struct timeout vc_switch_timeout;
! 63: };
! 64:
! 65: static inline u_int8_t _vga_attr_read(struct vga_handle *, int);
! 66: static inline void _vga_attr_write(struct vga_handle *, int, u_int8_t);
! 67: static inline u_int8_t _vga_ts_read(struct vga_handle *, int);
! 68: static inline void _vga_ts_write(struct vga_handle *, int, u_int8_t);
! 69: static inline u_int8_t _vga_gdc_read(struct vga_handle *, int);
! 70: static inline void _vga_gdc_write(struct vga_handle *, int, u_int8_t);
! 71:
! 72: static inline u_int8_t _vga_attr_read(vh, reg)
! 73: struct vga_handle *vh;
! 74: int reg;
! 75: {
! 76: u_int8_t res;
! 77:
! 78: /* reset state */
! 79: (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
! 80:
! 81: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg);
! 82: res = bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAR);
! 83:
! 84: /* reset state XXX unneeded? */
! 85: (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
! 86:
! 87: /* enable */
! 88: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20);
! 89:
! 90: return (res);
! 91: }
! 92:
! 93: static inline void _vga_attr_write(vh, reg, val)
! 94: struct vga_handle *vh;
! 95: int reg;
! 96: u_int8_t val;
! 97: {
! 98: /* reset state */
! 99: (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
! 100:
! 101: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_INDEX, reg);
! 102: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_ATC_DATAW, val);
! 103:
! 104: /* reset state XXX unneeded? */
! 105: (void) bus_space_read_1(vh->vh_iot, vh->vh_ioh_6845, 10);
! 106:
! 107: /* enable */
! 108: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, 0, 0x20);
! 109: }
! 110:
! 111: static inline u_int8_t _vga_ts_read(vh, reg)
! 112: struct vga_handle *vh;
! 113: int reg;
! 114: {
! 115: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg);
! 116: return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA));
! 117: }
! 118:
! 119: static inline void _vga_ts_write(vh, reg, val)
! 120: struct vga_handle *vh;
! 121: int reg;
! 122: u_int8_t val;
! 123: {
! 124: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_INDEX, reg);
! 125: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_TS_DATA, val);
! 126: }
! 127:
! 128: static inline u_int8_t _vga_gdc_read(vh, reg)
! 129: struct vga_handle *vh;
! 130: int reg;
! 131: {
! 132: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg);
! 133: return (bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA));
! 134: }
! 135:
! 136: static inline void _vga_gdc_write(vh, reg, val)
! 137: struct vga_handle *vh;
! 138: int reg;
! 139: u_int8_t val;
! 140: {
! 141: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_INDEX, reg);
! 142: bus_space_write_1(vh->vh_iot, vh->vh_ioh_vga, VGA_GDC_DATA, val);
! 143: }
! 144:
! 145: #define vga_attr_read(vh, reg) \
! 146: _vga_attr_read(vh, offsetof(struct reg_vgaattr, reg))
! 147: #define vga_attr_write(vh, reg, val) \
! 148: _vga_attr_write(vh, offsetof(struct reg_vgaattr, reg), val)
! 149: #define vga_ts_read(vh, reg) \
! 150: _vga_ts_read(vh, offsetof(struct reg_vgats, reg))
! 151: #define vga_ts_write(vh, reg, val) \
! 152: _vga_ts_write(vh, offsetof(struct reg_vgats, reg), val)
! 153: #define vga_gdc_read(vh, reg) \
! 154: _vga_gdc_read(vh, offsetof(struct reg_vgagdc, reg))
! 155: #define vga_gdc_write(vh, reg, val) \
! 156: _vga_gdc_write(vh, offsetof(struct reg_vgagdc, reg), val)
! 157:
! 158: #define vga_6845_read(vh, reg) \
! 159: pcdisplay_6845_read(&(vh)->vh_ph, reg)
! 160: #define vga_6845_write(vh, reg, val) \
! 161: pcdisplay_6845_write(&(vh)->vh_ph, reg, val)
! 162:
! 163: int vga_common_probe(bus_space_tag_t, bus_space_tag_t);
! 164: void vga_common_attach(struct device *, bus_space_tag_t,
! 165: bus_space_tag_t, int);
! 166: void vga_extended_attach(struct device *, bus_space_tag_t,
! 167: bus_space_tag_t, int, paddr_t (*)(void *, off_t, int));
! 168: int vga_is_console(bus_space_tag_t, int);
! 169: int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int);
! 170:
! 171: struct wsscreen_descr;
! 172: void vga_loadchars(struct vga_handle *, int, int, int, int, char *);
! 173: void vga_setfontset(struct vga_handle *, int, int);
! 174: void vga_setscreentype(struct vga_handle *,
! 175: const struct wsscreen_descr *);
! 176: #if NVGA_PCI > 0
! 177: int vga_pci_ioctl(void *, u_long, caddr_t, int, struct proc *);
! 178: #endif
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