diff options
Diffstat (limited to 'sys/arch/vax/vsa/lcg.c')
| -rw-r--r-- | sys/arch/vax/vsa/lcg.c | 52 |
1 files changed, 31 insertions, 21 deletions
diff --git a/sys/arch/vax/vsa/lcg.c b/sys/arch/vax/vsa/lcg.c index 20b7d094ea2..e961ebe1c06 100644 --- a/sys/arch/vax/vsa/lcg.c +++ b/sys/arch/vax/vsa/lcg.c @@ -1,4 +1,4 @@ -/* $OpenBSD: lcg.c,v 1.5 2006/08/01 18:49:42 miod Exp $ */ +/* $OpenBSD: lcg.c,v 1.6 2006/08/03 18:46:50 miod Exp $ */ /* * Copyright (c) 2006 Miodrag Vallat. * @@ -139,7 +139,7 @@ const struct wsdisplay_accessops lcg_accessops = { }; int lcg_alloc_attr(void *, int, int, int, long *); -u_int lcg_probe_screen(u_int32_t, u_int *, u_int *); +int lcg_probe_screen(u_int32_t, u_int *, u_int *); void lcg_resetcmap(struct lcg_screen *); void lcg_set_lut_entry(volatile u_int8_t *, const u_char *, u_int, u_int); int lcg_setup_screen(struct lcg_screen *); @@ -154,10 +154,8 @@ lcg_match(struct device *parent, void *vcf, void *aux) { struct vsbus_softc *sc = (void *)parent; struct vsbus_attach_args *va = aux; -#if 0 vaddr_t cfgreg; - int depth; -#endif + int depth, missing; volatile u_int8_t *ch; switch (vax_boardtype) { @@ -172,27 +170,33 @@ lcg_match(struct device *parent, void *vcf, void *aux) break; } -#if 0 /* better match and report unrecognized models for now */ /* - * Check for a recognized configuration. + * Check the configuration register. + * This is done to sort out empty frame buffer slots, since the video + * memory test sometimes passes! */ cfgreg = vax_map_physmem(LCG_CONFIG_ADDR, 1); depth = lcg_probe_screen(*(volatile u_int32_t *)cfgreg, NULL, NULL); vax_unmap_physmem(cfgreg, 1); - if (depth == 0) + if (depth < 0) /* no frame buffer */ return (0); -#endif /* * Check for video memory. * We can not use badaddr() on these models. */ - ch = (volatile u_int8_t *)va->va_addr; + missing = 0; + ch = (volatile u_int8_t *)vax_map_physmem(LCG_FB_ADDR, 1); *ch = 0x01; if ((*ch & 0x01) == 0) - return (0); - *ch = 0x00; - if ((*ch & 0x01) != 0) + missing = 1; + else { + *ch = 0x00; + if ((*ch & 0x01) != 0) + missing = 1; + } + vax_unmap_physmem((vaddr_t)ch, 1); + if (missing != 0) return (0); sc->sc_mask = 0x04; /* XXX - should be generated */ @@ -221,15 +225,17 @@ lcg_attach(struct device *parent, struct device *self, void *aux) if (!console) { tmp = vax_map_physmem(LCG_CONFIG_ADDR, 1); if (tmp == NULL) { - printf(": can not map configuration register\n"); + printf("\n%s: can not map configuration register\n", + self->dv_xname); return; } cfg = *(volatile u_int32_t *)tmp; vax_unmap_physmem(tmp, 1); - if (lcg_probe_screen(cfg, NULL, NULL) == 0) { - printf(": unrecognized configuration register %08x\n", - cfg); + if (lcg_probe_screen(cfg, NULL, NULL) <= 0) { + printf("\n%s:" + " unrecognized configuration register %08x\n", + self->dv_xname, cfg); return; } } @@ -304,7 +310,7 @@ fail1: * Determine if we have a recognized frame buffer, its resolution and * color depth. */ -u_int +int lcg_probe_screen(u_int32_t cfg, u_int *width, u_int *height) { u_int w, h, d = 8; @@ -312,6 +318,8 @@ lcg_probe_screen(u_int32_t cfg, u_int *width, u_int *height) switch (vax_boardtype) { case VAX_BTYP_46: switch (cfg & 0xf0) { + case 0x00: + return (-1); /* no hardware */ case 0x20: case 0x60: w = 1024; h = 864; @@ -327,11 +335,13 @@ lcg_probe_screen(u_int32_t cfg, u_int *width, u_int *height) w = 1280; h = 1024; break; default: - return (0); + return (0); /* unknown configuration, please help */ } break; case VAX_BTYP_48: switch (cfg & 0x07) { + case 0x00: + return (-1); /* no hardware */ case 0x05: w = 1280; h = 1024; break; @@ -350,7 +360,7 @@ lcg_probe_screen(u_int32_t cfg, u_int *width, u_int *height) } break; default: - return (0); + return (0); /* unknown configuration, please help */ } break; } @@ -616,7 +626,7 @@ lcgcnprobe() cfg = *(volatile u_int32_t *) (tmp + (LCG_CONFIG_ADDR & VAX_PGOFSET)); - if (lcg_probe_screen(cfg, NULL, NULL) == 0) + if (lcg_probe_screen(cfg, NULL, NULL) <= 0) break; /* unsupported configuration */ /* |