projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 60f56dfc KM |
1 | /* |
| 2 | * Copyright (c) 1988 University of Utah. | |
| 3 | * Copyright (c) 1990 The Regents of the University of California. | |
| 4 | * All rights reserved. | |
| 5 | * | |
| 6 | * This code is derived from software contributed to Berkeley by | |
| 7 | * the Systems Programming Group of the University of Utah Computer | |
| 8 | * Science Department. | |
| 9 | * | |
| 10 | * %sccs.include.redist.c% | |
| 11 | * | |
| 12 | * from: Utah $Hdr: grf_tc.c 1.13 89/08/25$ | |
| 13 | * | |
| 14 | * @(#)grf_tc.c 7.1 (Berkeley) %G% | |
| 15 | */ | |
| 16 | ||
| 17 | #include "grf.h" | |
| 18 | #if NGRF > 0 | |
| 19 | ||
| 20 | /* | |
| 21 | * Graphics routines for TOPCAT frame buffer | |
| 22 | */ | |
| 23 | #include "param.h" | |
| 24 | #include "errno.h" | |
| 25 | ||
| 26 | #include "grfioctl.h" | |
| 27 | #include "grfvar.h" | |
| 28 | #include "grf_tcreg.h" | |
| 29 | ||
| 30 | #include "machine/cpu.h" | |
| 31 | ||
| 32 | /* | |
| 33 | * Initialize hardware. | |
| 34 | * Must fill in the grfinfo structure in g_softc. | |
| 35 | * Returns 0 if hardware not present, non-zero ow. | |
| 36 | */ | |
| 37 | tc_init(gp, addr) | |
| 38 | struct grf_softc *gp; | |
| 39 | u_char *addr; | |
| 40 | { | |
| 41 | register struct tcboxfb *tp = (struct tcboxfb *) addr; | |
| 42 | struct grfinfo *gi = &gp->g_display; | |
| 43 | volatile u_char *fbp; | |
| 44 | u_char save; | |
| 45 | int fboff; | |
| 46 | ||
| 47 | #if defined(HP360) || defined(HP370) | |
| 48 | extern char grfregs[]; | |
| 49 | if (addr == (u_char *)grfregs) | |
| 50 | gi->gd_regaddr = (caddr_t) DIOIIBASE; | |
| 51 | else | |
| 52 | #endif | |
| 53 | gi->gd_regaddr = (caddr_t) UNIOV(addr); | |
| 54 | gi->gd_regsize = 0x10000; | |
| 55 | gi->gd_fbwidth = (tp->fbwmsb << 8) | tp->fbwlsb; | |
| 56 | gi->gd_fbheight = (tp->fbhmsb << 8) | tp->fbhlsb; | |
| 57 | fboff = (tp->fbomsb << 8) | tp->fbolsb; | |
| 58 | gi->gd_fbaddr = (caddr_t) (*(addr + fboff) << 16); | |
| 59 | #if defined(HP360) || defined(HP370) | |
| 60 | /* | |
| 61 | * For DIO II space addresses offset is relative to the DIO II space. | |
| 62 | * XXX: this should apply to all frame buffer types. | |
| 63 | */ | |
| 64 | if (gi->gd_regaddr >= (caddr_t)DIOIIBASE) | |
| 65 | gi->gd_fbaddr += (int) gi->gd_regaddr; | |
| 66 | #endif | |
| 67 | gi->gd_fbsize = gi->gd_fbwidth * gi->gd_fbheight; | |
| 68 | gi->gd_dwidth = (tp->dwmsb << 8) | tp->dwlsb; | |
| 69 | gi->gd_dheight = (tp->dhmsb << 8) | tp->dhlsb; | |
| 70 | gi->gd_planes = tp->num_planes; | |
| 71 | gi->gd_colors = 1 << gi->gd_planes; | |
| 72 | if (gi->gd_colors == 1) { | |
| 73 | fbp = (u_char *) IOV(gi->gd_fbaddr); | |
| 74 | tp->wen = ~0; | |
| 75 | tp->prr = 0x3; | |
| 76 | tp->fben = ~0; | |
| 77 | save = *fbp; | |
| 78 | *fbp = 0xFF; | |
| 79 | gi->gd_colors = *fbp + 1; | |
| 80 | *fbp = save; | |
| 81 | } | |
| 82 | return(1); | |
| 83 | } | |
| 84 | ||
| 85 | /* | |
| 86 | * Change the mode of the display. | |
| 87 | * Right now all we can do is grfon/grfoff. | |
| 88 | * Return a UNIX error number or 0 for success. | |
| 89 | * Function may not be needed anymore. | |
| 90 | */ | |
| 91 | /*ARGSUSED*/ | |
| 92 | tc_mode(gp, cmd) | |
| 93 | struct grf_softc *gp; | |
| 94 | { | |
| 95 | int error = 0; | |
| 96 | ||
| 97 | switch (cmd) { | |
| 98 | case GM_GRFON: | |
| 99 | case GM_GRFOFF: | |
| 100 | break; | |
| 101 | default: | |
| 102 | error = EINVAL; | |
| 103 | break; | |
| 104 | } | |
| 105 | return(error); | |
| 106 | } | |
| 107 | #endif |