/* $NetBSD: sti_sgc.c,v 1.7.4.1 2024/06/22 10:57:10 martin Exp $ */ /* $OpenBSD: sti_sgc.c,v 1.14 2007/05/26 00:36:03 krw Exp $ */ /* * Copyright (c) 2005, Miodrag Vallat * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * */ #include __KERNEL_RCSID(0, "$NetBSD: sti_sgc.c,v 1.7.4.1 2024/06/22 10:57:10 martin Exp $"); #include #include #include #include #include #include #include #include #include #include #include struct sti_sgc_softc { struct sti_softc sc_sti; paddr_t sc_bitmap; }; /* * 425e EVRX specific hardware */ /* * EVRX RAMDAC (Bt458) is found at offset 0x060000 from SGC bus PA and * offset 0x040000 length 0x1c0000 is mapped in MI sti via ROM region 2 */ #define STI_EVRX_REGNO2OFFSET 0x020000 #define STI_EVRX_FBOFFSET 0x200000 #define EVRX_BT458_ADDR (STI_EVRX_REGNO2OFFSET + 0x200 + 2) #define EVRX_BT458_CMAP (STI_EVRX_REGNO2OFFSET + 0x204 + 2) #define EVRX_BT458_CTRL (STI_EVRX_REGNO2OFFSET + 0x208 + 2) #define EVRX_BT458_OMAP (STI_EVRX_REGNO2OFFSET + 0x20C + 2) /* from HP-UX /usr/lib/libddevrx.a */ #define EVRX_MAGIC00 (STI_EVRX_REGNO2OFFSET + 0x600) #define EVRX_MAGIC04 (STI_EVRX_REGNO2OFFSET + 0x604) #define EVRX_MAGIC08 (STI_EVRX_REGNO2OFFSET + 0x608) #define EVRX_MAGIC0C (STI_EVRX_REGNO2OFFSET + 0x60c) #define EVRX_MAGIC10 (STI_EVRX_REGNO2OFFSET + 0x610) #define EVRX_MAGIC10_BSY 0x00010000 #define EVRX_MAGIC18 (STI_EVRX_REGNO2OFFSET + 0x618) #define EVRX_MAGIC1C (STI_EVRX_REGNO2OFFSET + 0x61c) /* * HP A1659A CRX specific hardware */ #define STI_CRX_FBOFFSET 0x01000000 static int sticonslot = -1; static struct bus_space_tag sticn_tag; static struct sti_rom sticn_rom; static struct sti_screen sticn_scr; static bus_addr_t sticn_bases[STI_REGION_MAX]; static int sti_sgc_match(device_t, struct cfdata *, void *); static void sti_sgc_attach(device_t, device_t, void *); static int sti_sgc_probe(bus_space_tag_t, int); CFATTACH_DECL_NEW(sti_sgc, sizeof(struct sti_sgc_softc), sti_sgc_match, sti_sgc_attach, NULL, NULL); /* 425e EVRX/CRX specific access functions */ static int sti_evrx_putcmap(struct sti_screen *, u_int, u_int); static void sti_evrx_resetramdac(struct sti_screen *); static void sti_evrx_resetcmap(struct sti_screen *); static void sti_evrx_setupfb(struct sti_screen *); static paddr_t sti_m68k_mmap(void *, void *, off_t, int); static const struct wsdisplay_accessops sti_m68k_accessops = { sti_ioctl, sti_m68k_mmap, sti_alloc_screen, sti_free_screen, sti_show_screen, sti_load_font }; static int sti_sgc_match(device_t parent, struct cfdata *cf, void *aux) { struct sgc_attach_args *saa = aux; /* * If we already probed it successfully as a console device, go ahead, * since we will not be able to bus_space_map() again. */ if (saa->saa_slot == sticonslot) return 1; return sti_sgc_probe(saa->saa_iot, saa->saa_slot); } static void sti_sgc_attach(device_t parent, device_t self, void *aux) { struct sti_sgc_softc *sc = device_private(self); struct sti_softc *ssc = &sc->sc_sti; struct sgc_attach_args *saa = aux; struct sti_screen *scr; bus_space_tag_t bst; bus_space_handle_t romh; bus_addr_t base; struct wsemuldisplaydev_attach_args waa; u_int romend; struct sti_dd *rom_dd; uint32_t grid0; int i; ssc->sc_dev = self; bst = saa->saa_iot; base = (bus_addr_t)sgc_slottopa(saa->saa_slot); if (saa->saa_slot == sticonslot) { ssc->sc_flags |= STI_CONSOLE | STI_ATTACHED; ssc->sc_rom = &sticn_rom; ssc->sc_rom->rom_softc = ssc; ssc->sc_scr = &sticn_scr; ssc->sc_scr->scr_rom = ssc->sc_rom; memcpy(ssc->bases, sticn_bases, sizeof(ssc->bases)); sti_describe(ssc); } else { if (bus_space_map(bst, base, PAGE_SIZE, 0, &romh)) { aprint_error(": can't map ROM"); return; } /* * Compute real PROM size */ romend = sti_rom_size(bst, romh); bus_space_unmap(bst, romh, PAGE_SIZE); if (bus_space_map(bst, base, romend, 0, &romh)) { aprint_error(": can't map frame buffer"); return; } ssc->bases[0] = romh; for (i = 0; i < STI_REGION_MAX; i++) ssc->bases[i] = base; if (sti_attach_common(ssc, bst, bst, romh, STI_CODEBASE_ALT) != 0) return; } /* Identify the board model by dd_grid */ rom_dd = &ssc->sc_rom->rom_dd; grid0 = rom_dd->dd_grid[0]; scr = ssc->sc_scr; switch (grid0) { case STI_DD_EVRX: /* * 425e on-board EVRX framebuffer. * bitmap memory can be accessed at offset +0x200000. */ sc->sc_bitmap = base + STI_EVRX_FBOFFSET; aprint_normal_dev(self, "Enable mmap support\n"); /* * initialize Bt458 RAMDAC and preserve initial color map */ sti_evrx_resetramdac(scr); sti_evrx_resetcmap(scr); scr->setupfb = sti_evrx_setupfb; scr->putcmap = sti_evrx_putcmap; scr->scr_wsmode = WSDISPLAYIO_MODE_EMUL; waa.console = ssc->sc_flags & STI_CONSOLE ? 1 : 0; waa.scrdata = &scr->scr_screenlist; waa.accessops = &sti_m68k_accessops; waa.accesscookie = scr; config_found(ssc->sc_dev, &waa, wsemuldisplaydevprint, CFARGS_NONE); break; case STI_DD_CRX: /* * HP A1659A CRX on some 425t variants. * bitmap memory can be accessed at offset +0x1000000. */ sc->sc_bitmap = base + STI_CRX_FBOFFSET; aprint_normal_dev(self, "Enable mmap support\n"); scr->scr_wsmode = WSDISPLAYIO_MODE_EMUL; waa.console = ssc->sc_flags & STI_CONSOLE ? 1 : 0; waa.scrdata = &scr->scr_screenlist; waa.accessops = &sti_m68k_accessops; waa.accesscookie = scr; config_found(ssc->sc_dev, &waa, wsemuldisplaydevprint, CFARGS_NONE); break; default: /* * Unsupported variants. * Use default common sti(4) attachment (no bitmap support). */ sti_end_attach(ssc); break; } } static int sti_sgc_probe(bus_space_tag_t iot, int slot) { bus_space_handle_t ioh; int devtype; if (bus_space_map(iot, (bus_addr_t)sgc_slottopa(slot), PAGE_SIZE, 0, &ioh)) return 0; devtype = bus_space_read_1(iot, ioh, 3); bus_space_unmap(iot, ioh, PAGE_SIZE); /* * This might not be reliable enough. On the other hand, non-STI * SGC cards will apparently not initialize in the hp300, to the * point of not even answering bus probes (checked with an * Harmony/FDDI SGC card). */ if (devtype != STI_DEVTYPE1 && devtype != STI_DEVTYPE4) return 0; return 1; } static int sti_evrx_putcmap(struct sti_screen *scr, u_int index, u_int count) { struct sti_rom *rom = scr->scr_rom; bus_space_tag_t bst = rom->memt; bus_space_handle_t bsh = rom->regh[2]; int i; /* magic setup from HP-UX */ bus_space_write_4(bst, bsh, EVRX_MAGIC08, 0x00000001); bus_space_write_4(bst, bsh, EVRX_MAGIC00, 0x00000001); for (i = index; i < index + count; i++) { /* this is what HP-UX woodDownloadCmap() does */ while ((bus_space_read_4(bst, bsh, EVRX_MAGIC10) & EVRX_MAGIC10_BSY) != 0) continue; bus_space_write_1(bst, bsh, EVRX_BT458_ADDR, i); bus_space_write_1(bst, bsh, EVRX_BT458_CMAP, scr->scr_rcmap[i]); bus_space_write_1(bst, bsh, EVRX_BT458_CMAP, scr->scr_gcmap[i]); bus_space_write_4(bst, bsh, EVRX_MAGIC10, scr->scr_bcmap[i]); } return 0; } static void sti_evrx_resetramdac(struct sti_screen *scr) { struct sti_rom *rom = scr->scr_rom; bus_space_tag_t bst = rom->memt; bus_space_handle_t bsh = rom->regh[2]; #if 0 int i; #endif /* * Initialize the Bt458. When we write to control registers, * the address is not incremented automatically. So we specify * it ourselves for each control register. */ /* all planes will be read */ bus_space_write_1(bst, bsh, EVRX_BT458_ADDR, 0x04); bus_space_write_1(bst, bsh, EVRX_BT458_CTRL, 0xff); /* all planes have non-blink */ bus_space_write_1(bst, bsh, EVRX_BT458_ADDR, 0x05); bus_space_write_1(bst, bsh, EVRX_BT458_CTRL, 0x00); /* palette enabled, ovly plane disabled */ bus_space_write_1(bst, bsh, EVRX_BT458_ADDR, 0x06); bus_space_write_1(bst, bsh, EVRX_BT458_CTRL, 0x40); /* no test mode */ bus_space_write_1(bst, bsh, EVRX_BT458_ADDR, 0x07); bus_space_write_1(bst, bsh, EVRX_BT458_CTRL, 0x00); /* magic initialization from HP-UX woodInitializeHardware() */ bus_space_write_4(bst, bsh, EVRX_MAGIC00, 0x00000001); bus_space_write_4(bst, bsh, EVRX_MAGIC04, 0x00000001); bus_space_write_4(bst, bsh, EVRX_MAGIC08, 0x00000001); bus_space_write_4(bst, bsh, EVRX_MAGIC0C, 0x00000001); bus_space_write_4(bst, bsh, EVRX_MAGIC18, 0xFFFFFFFF); bus_space_write_4(bst, bsh, EVRX_MAGIC1C, 0x00000000); #if 0 bus_space_write_1(bst, bsh, EVRX_BT458_ADDR, 0x00); for (i = 0; i < 4; i++) { bus_space_write_1(bst, bsh, EVRX_BT458_OMAP, 0x00); bus_space_write_1(bst, bsh, EVRX_BT458_OMAP, 0x00); bus_space_write_1(bst, bsh, EVRX_BT458_OMAP, 0x00); } #endif } static void sti_evrx_resetcmap(struct sti_screen *scr) { struct sti_rom *rom = scr->scr_rom; bus_space_tag_t bst = rom->memt; bus_space_handle_t bsh = rom->regh[2]; int i; /* magic setup from HP-UX */ bus_space_write_4(bst, bsh, EVRX_MAGIC08, 0x00000001); bus_space_write_4(bst, bsh, EVRX_MAGIC00, 0x00000001); /* preserve palette values initialized by STI firmware */ for (i = 0; i < STI_NCMAP; i++) { /* this is what HP-UX woodUploadCmap() does */ while ((bus_space_read_4(bst, bsh, EVRX_MAGIC10) & EVRX_MAGIC10_BSY) != 0) continue; bus_space_write_1(bst, bsh, EVRX_BT458_ADDR, i); scr->scr_rcmap[i] = bus_space_read_1(bst, bsh, EVRX_BT458_CMAP); scr->scr_gcmap[i] = bus_space_read_1(bst, bsh, EVRX_BT458_CMAP); scr->scr_bcmap[i] = bus_space_read_1(bst, bsh, EVRX_BT458_CMAP); } } static void sti_evrx_setupfb(struct sti_screen *scr) { sti_init(scr, 0); sti_evrx_resetramdac(scr); } static paddr_t sti_m68k_mmap(void *v, void *vs, off_t offset, int prot) { struct sti_screen *scr = (struct sti_screen *)v; struct sti_rom *rom = scr->scr_rom; struct sti_softc *ssc = rom->rom_softc; struct sti_sgc_softc *sc = device_private(ssc->sc_dev); paddr_t cookie = -1; if ((offset & PAGE_MASK) != 0) return -1; switch (scr->scr_wsmode) { case WSDISPLAYIO_MODE_MAPPED: /* not implemented yet; what should be shown? */ break; case WSDISPLAYIO_MODE_DUMBFB: if (offset >= 0 && offset < (scr->fbwidth * scr->fbheight)) cookie = m68k_btop(sc->sc_bitmap + offset); break; default: break; } return cookie; } int sti_sgc_cnprobe(bus_space_tag_t bst, bus_addr_t addr, int slot) { void *va; bus_space_handle_t romh; int devtype, rv = 0; if (bus_space_map(bst, addr, PAGE_SIZE, 0, &romh)) return 0; va = bus_space_vaddr(bst, romh); if (badaddr(va)) goto out; devtype = bus_space_read_1(bst, romh, 3); if (devtype == STI_DEVTYPE1 || devtype == STI_DEVTYPE4) rv = 1; out: bus_space_unmap(bst, romh, PAGE_SIZE); return rv; } void sti_sgc_cnattach(bus_space_tag_t bst, bus_addr_t addr, int slot) { int i; sticn_tag = *bst; /* sticn_bases[0] will be fixed in sti_cnattach() */ for (i = 0; i < STI_REGION_MAX; i++) sticn_bases[i] = addr; sti_cnattach(&sticn_rom, &sticn_scr, &sticn_tag, sticn_bases, STI_CODEBASE_ALT); sticonslot = slot; }