diff options
Diffstat (limited to 'sys/arch/pmax/dev/sfb.c')
| -rw-r--r-- | sys/arch/pmax/dev/sfb.c | 134 |
1 files changed, 92 insertions, 42 deletions
diff --git a/sys/arch/pmax/dev/sfb.c b/sys/arch/pmax/dev/sfb.c index 89cd89a4b3d..1e744970f3d 100644 --- a/sys/arch/pmax/dev/sfb.c +++ b/sys/arch/pmax/dev/sfb.c @@ -1,4 +1,4 @@ -/* $NetBSD: sfb.c,v 1.4 1995/09/12 07:30:45 jonathan Exp $ */ +/* $NetBSD: sfb.c,v 1.11.4.3 1996/09/09 20:47:40 thorpej Exp $ */ /*- * Copyright (c) 1992, 1993 @@ -36,7 +36,6 @@ * SUCH DAMAGE. * * from: @(#)sfb.c 8.1 (Berkeley) 6/10/93 - * $Id: sfb.c,v 1.1 1995/10/18 08:51:28 deraadt Exp $ */ /* @@ -81,16 +80,19 @@ * rights to redistribute these changes. */ -#include <fb.h> -#include <sfb.h> +#include "fb.h" +#include "sfb.h" #include <sys/param.h> +#include <sys/systm.h> /* printf() */ #include <sys/kernel.h> #include <sys/errno.h> #include <sys/device.h> #include <sys/fcntl.h> +#include <sys/malloc.h> #include <machine/autoconf.h> +#include <dev/tc/tcvar.h> #include <machine/fbio.h> #include <machine/fbvar.h> @@ -117,16 +119,21 @@ extern int pmax_boardtype; * Forward references. */ -int sfbinit (char *, int, int); +int sfbinit __P((struct fbinfo *fi, caddr_t sfbaddr, int unit, int silent)); #define CMAP_BITS (3 * 256) /* 256 entries, 3 bytes per. */ -static u_char cmap_bits [NSFB * CMAP_BITS]; /* One colormap per sfb... */ +static u_char cmap_bits [CMAP_BITS]; /* colormap for console... */ int sfbmatch __P((struct device *, void *, void *)); void sfbattach __P((struct device *, struct device *, void *)); +int sfb_intr __P((void *sc)); -struct cfdriver sfbcd = { - NULL, "sfb", sfbmatch, sfbattach, DV_DULL, sizeof(struct device), 0 +struct cfattach sfb_ca = { + sizeof(struct device), sfbmatch, sfbattach +}; + +struct cfdriver sfb_cd = { + NULL, "sfb", DV_DULL }; struct fbdriver sfb_driver = { @@ -149,28 +156,27 @@ sfbmatch(parent, match, aux) void *match; void *aux; { - struct cfdata *cf = match; - struct confargs *ca = aux; - static int nsfbs = 1; - caddr_t sfbaddr = BUS_CVTADDR(ca); + /*struct cfdata *cf = match;*/ + struct tc_attach_args *ta = aux; /* make sure that we're looking for this type of device. */ - /*if (!sfbprobe(sfbaddr)) return 0;*/ - if (!BUS_MATCHNAME(ca, "PMAGB-BA")) + if (!TC_BUS_MATCHNAME(ta, "PMAGB-BA")) return (0); - -#ifdef notyet - /* if it can't have the one mentioned, reject it */ - if (cf->cf_unit >= nsfbs) + /* + * if the TC rom ident matches, assume the VRAM is present too. + */ +#if 0 + if (badaddr( ((caddr_t)ta->ta_addr) + SFB_OFFSET_VRAM, 4)) return (0); #endif + return (1); } /* * Attach a device. Hand off all the work to sfbinit(), - * so console-config cod can attach sfbs early in boot. + * so console-config code can attach sfbs early in boot. */ void sfbattach(parent, self, aux) @@ -178,51 +184,70 @@ sfbattach(parent, self, aux) struct device *self; void *aux; { - struct confargs *ca = aux; - caddr_t base = BUS_CVTADDR(ca); + struct tc_attach_args *ta = aux; + caddr_t sfbaddr = (caddr_t)ta->ta_addr; int unit = self->dv_unit; + struct fbinfo *fi = (struct fbinfo *) self; #ifdef notyet /* if this is the console, it's already configured. */ - if (ca->ca_slotpri == cons_slot) + if (ta->ta_cookie == cons_slot) return; /* XXX patch up f softc pointer */ #endif - if (!sfbinit(base, unit, 0)) + if (!sfbinit(fi, sfbaddr, unit, 0)) return; #if 0 /*XXX*/ - *(base + SFB_INTERRUPT_ENABLE) = 0; -#endif -} + /* + * Sean Davidson (davidson@sean.zk3.dec.com) reports this + * isn't sufficient on a 3MIN, Use an interrupt handler instead. + */ -/* - * Test to see if device is present. - * Return true if found and initialized ok. - */ -/*ARGSUSED*/ -sfbprobe(cp) - struct pmax_ctlr *cp; -{ + *(sfbaddr + SFB_INTERRUPT_ENABLE) = 0; + +#endif + /* + * By default, the SFB requests an interrupt during every vertical-retrace period. + * We never enable interrupts from SFB cards, except on the + * 3MIN, where TC options interrupt at spl0 through spl2, and + * disabling of TC option interrupts doesn't work. + */ + if (pmax_boardtype == DS_3MIN) { + tc_intr_establish(parent, (void*)ta->ta_cookie, TC_IPL_NONE, + sfb_intr, fi); + } + printf("\n"); } + /* * Initialization */ int -sfbinit(base, unit, silent) +sfbinit(fi, base, unit, silent) + struct fbinfo *fi; char *base; int unit; int silent; { - struct fbinfo *fi; - u_char foo; - - fi = &sfbfi; /* XXX use softc */ - if (unit > NSFB) - return (0); + /* + * If this device is being intialized as the console, malloc() + * is not yet up and we must use statically-allocated space. + */ + if (fi == NULL) { + fi = &sfbfi; /* XXX */ + fi->fi_cmap_bits = (caddr_t)cmap_bits; + } + else { + fi->fi_cmap_bits = malloc(CMAP_BITS, M_DEVBUF, M_NOWAIT); + if (fi->fi_cmap_bits == NULL) { + printf("sfb%d: no memory for cmap\n", unit); + return (0); + } + } /* check for no frame buffer */ if (badaddr(base + SFB_OFFSET_VRAM, 4)) @@ -238,7 +263,6 @@ sfbinit(base, unit, silent) fi->fi_linebytes = 1280; fi->fi_driver = &sfb_driver; fi->fi_blanked = 0; - fi->fi_cmap_bits = (caddr_t)&cmap_bits [CMAP_BITS * unit]; /* Fill in Frame Buffer Type struct. */ fi->fi_type.fb_boardtype = PMAX_FBTYPE_SFB; @@ -298,4 +322,30 @@ sfbinit(base, unit, silent) return (1); } + +/* + * The TURBOChannel sfb interrupts by default on every vertical retrace, + * and we don't know to disable those interrupt requests. + * The 4.4BSD/pamx kernel never enabled delivery of those interrupts from the TC bus, + * but there's a kernel design bug on the 3MIN, where disabling + * (or enabling) TC option interrupts has no effect; each slot interrupt is + * mapped directly to a separate R3000 interrupt and they always seem to be taken. + * + * This function simply dismisses SFB interrupts, or the interrupt + * request from the card will still be active. + */ +int +sfb_intr(sc) + void *sc; +{ + struct fbinfo *fi = /* XXX (struct fbinfo *)sc */ &sfbfi; + + char *slot_addr = (((char *)fi->fi_base) - SFB_ASIC_OFFSET); + + /* reset vertical-retrace interrupt by writing a dont-care */ + *(int*) (slot_addr + SFB_CLEAR) = 0; + + return (0); +} + /* old bt459 code used to be here */ |