310 lines
8.0 KiB
C
310 lines
8.0 KiB
C
/* $NetBSD: pci_vga.c,v 1.9 2003/07/15 01:19:55 lukem Exp $ */
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/*
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* Copyright (c) 1999 Leo Weppelman. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Leo Weppelman.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: pci_vga.c,v 1.9 2003/07/15 01:19:55 lukem Exp $");
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/systm.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcidevs.h>
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#include <atari/pci/pci_vga.h>
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#include <atari/dev/grf_etreg.h>
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#include <atari/include/iomap.h>
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#include <atari/dev/font.h>
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#include "vga_pci.h"
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#if NVGA_PCI > 0
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#include <dev/cons.h>
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#include <dev/ic/mc6845reg.h>
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#include <dev/ic/pcdisplayvar.h>
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#include <dev/ic/vgareg.h>
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#include <dev/ic/vgavar.h>
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#endif
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static void loadfont(volatile u_char *, u_char *fb);
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/* XXX: Shouldn't these be in font.h???? */
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extern font_info font_info_8x8;
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extern font_info font_info_8x16;
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/* Console colors */
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static u_char conscolors[3][3] = { /* background, foreground, hilite */
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{0x0, 0x0, 0x0}, {0x30, 0x30, 0x30}, { 0x3f, 0x3f, 0x3f}
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};
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static bus_space_tag_t vga_iot, vga_memt;
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static int tags_valid = 0;
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#define VGA_REG_SIZE (8*1024)
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#define VGA_FB_SIZE (32*1024)
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/*
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* Go look for a VGA card on the PCI-bus. This search is a
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* stripped down version of the PCI-probe. It only looks on
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* bus0 for VGA cards. The first card found is used.
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*/
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int
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check_for_vga(iot, memt)
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bus_space_tag_t iot, memt;
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{
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pci_chipset_tag_t pc = NULL; /* XXX */
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bus_space_handle_t ioh_regs, memh_fb;
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pcitag_t tag;
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int device, found, id, maxndevs, i, j;
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int class, got_ioh, got_memh, rv;
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volatile u_char *regs;
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u_char *fb;
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char *nbd = "NetBSD/Atari";
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found = 0;
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tag = 0;
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id = 0;
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rv = 0;
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got_ioh = 0;
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got_memh = 0;
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maxndevs = pci_bus_maxdevs(pc, 0);
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/*
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* Map 8Kb of registers and 32Kb frame buffer.
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* XXX: The way the registers are mapped here is plain wrong.
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* We should try to pin-point the region down to 3[bcd]0 (see
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* .../dev/ic/vga.c).
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*/
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if (bus_space_map(iot, 0, VGA_REG_SIZE, 0, &ioh_regs))
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return 0;
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got_ioh = 1;
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if (bus_space_map(memt, 0xa0000, VGA_FB_SIZE, 0, &memh_fb))
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goto bad;
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got_memh = 1;
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regs = bus_space_vaddr(iot, ioh_regs);
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fb = bus_space_vaddr(memt, memh_fb);
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for (device = 0; !found && (device < maxndevs); device++) {
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tag = pci_make_tag(pc, 0, device, 0);
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id = pci_conf_read(pc, tag, PCI_ID_REG);
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if (id == 0 || id == 0xffffffff)
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continue;
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/*
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* Check if we have some display device here...
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*/
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class = pci_conf_read(pc, tag, PCI_CLASS_REG);
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i = 0;
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if (PCI_CLASS(class) == PCI_CLASS_PREHISTORIC &&
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PCI_SUBCLASS(class) == PCI_SUBCLASS_PREHISTORIC_VGA)
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i = 1;
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if (PCI_CLASS(class) == PCI_CLASS_DISPLAY &&
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PCI_SUBCLASS(class) == PCI_SUBCLASS_DISPLAY_VGA)
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i = 1;
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if (i == 0)
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continue;
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#if _MILANHW_
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/* Don't need to be more specific */
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milan_vga_init(pc, tag, id, regs, fb);
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found = 1;
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#else
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switch (id = PCI_PRODUCT(id)) {
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/*
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* XXX Make the inclusion of the cases dependend
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* on config options!
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*/
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case PCI_PRODUCT_TSENG_ET6000:
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case PCI_PRODUCT_TSENG_ET4000_W32P_A:
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case PCI_PRODUCT_TSENG_ET4000_W32P_B:
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case PCI_PRODUCT_TSENG_ET4000_W32P_C:
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case PCI_PRODUCT_TSENG_ET4000_W32P_D:
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tseng_init(pc, tag, id, regs, fb);
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found = 1;
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break;
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case PCI_PRODUCT_ATI_RAGE_PRO_PCI_P:
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ati_vga_init(pc, tag, id, regs, fb);
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found = 1;
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break;
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default:
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break;
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}
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#endif /* _MILANHW_ */
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}
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if (!found)
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goto bad;
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/*
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* Assume the device is in CGA mode. Wscons expects this too...
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*/
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bus_space_unmap(memt, memh_fb, VGA_FB_SIZE);
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if (bus_space_map(memt, 0xb8000, VGA_FB_SIZE, 0, &memh_fb)) {
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got_memh = 0;
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goto bad;
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}
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fb = bus_space_vaddr(memt, memh_fb);
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/*
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* Generic parts of the initialization...
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*/
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/* B&W colors */
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vgaw(regs, VDAC_ADDRESS_W, 0);
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for (i = 0; i < 256; i++) {
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j = (i & 1) ? ((i > 7) ? 2 : 1) : 0;
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vgaw(regs, VDAC_DATA, conscolors[j][0]);
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vgaw(regs, VDAC_DATA, conscolors[j][1]);
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vgaw(regs, VDAC_DATA, conscolors[j][2]);
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}
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loadfont(regs, fb);
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/*
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* Clear the screen and print a message. The latter
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* is of diagnostic/debug use only.
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*/
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for (i = 50 * 80; i >= 0; i -= 2) {
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fb[i] = 0x20; fb[i+1] = 0x07;
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}
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for (i = 56; *nbd; i += 2)
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fb[i] = *nbd++;
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rv = 1;
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vga_iot = iot;
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vga_memt = memt;
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rv = tags_valid = 1;
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bad:
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if (got_memh)
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bus_space_unmap(memt, memh_fb, VGA_FB_SIZE);
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if (got_ioh)
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bus_space_unmap(iot, ioh_regs, VGA_REG_SIZE);
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return (rv);
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}
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#if NVGA_PCI > 0
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void vgacnprobe(struct consdev *);
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void vgacninit(struct consdev *);
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void
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vgacnprobe(cp)
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struct consdev *cp;
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{
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if (tags_valid)
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cp->cn_pri = CN_NORMAL;
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}
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void
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vgacninit(cp)
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struct consdev *cp;
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{
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if (tags_valid) {
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/* XXX: Are those arguments correct? Leo */
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vga_cnattach(vga_iot, vga_memt, 8, 0);
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}
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}
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#endif /* NVGA_PCI */
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/*
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* Generic VGA. Load the configured kernel font into the videomemory and
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* place the card into textmode.
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*/
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static void
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loadfont(ba, fb)
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volatile u_char *ba; /* Register area KVA */
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u_char *fb; /* Frame buffer KVA */
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{
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font_info *fd;
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u_char *c, *f, tmp;
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u_short z, y;
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#if defined(KFONT_8X8)
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fd = &font_info_8x8;
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#else
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fd = &font_info_8x16;
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#endif
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WAttr(ba, 0x20 | ACT_ID_ATTR_MODE_CNTL, 0x0a);
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WSeq(ba, SEQ_ID_MAP_MASK, 0x04);
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WSeq(ba, SEQ_ID_MEMORY_MODE, 0x06);
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WGfx(ba, GCT_ID_READ_MAP_SELECT, 0x02);
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WGfx(ba, GCT_ID_GRAPHICS_MODE, 0x00);
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WGfx(ba, GCT_ID_MISC, 0x0c);
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/*
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* load text font into beginning of display memory. Each
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* character cell is 32 bytes long (enough for 4 planes)
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*/
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for (z = 0, c = fb; z < 256 * 32; z++)
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*c++ = 0;
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c = (unsigned char *) (fb) + (32 * fd->font_lo);
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f = fd->font_p;
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z = fd->font_lo;
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for (; z <= fd->font_hi; z++, c += (32 - fd->height))
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for (y = 0; y < fd->height; y++) {
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*c++ = *f++;
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}
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/*
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* Odd/Even addressing
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*/
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WSeq(ba, SEQ_ID_MAP_MASK, 0x03);
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WSeq(ba, SEQ_ID_MEMORY_MODE, 0x03);
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WGfx(ba, GCT_ID_READ_MAP_SELECT, 0x00);
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WGfx(ba, GCT_ID_GRAPHICS_MODE, 0x10);
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WGfx(ba, GCT_ID_MISC, 0x0e);
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/*
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* Font height + underline location
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*/
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tmp = RCrt(ba, CRT_ID_MAX_ROW_ADDRESS) & 0xe0;
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WCrt(ba, CRT_ID_MAX_ROW_ADDRESS, tmp | (fd->height - 1));
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tmp = RCrt(ba, CRT_ID_UNDERLINE_LOC) & 0xe0;
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WCrt(ba, CRT_ID_UNDERLINE_LOC, tmp | (fd->height - 1));
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/*
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* Cursor setup
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*/
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WCrt(ba, CRT_ID_CURSOR_START , 0x00);
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WCrt(ba, CRT_ID_CURSOR_END , fd->height - 1);
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WCrt(ba, CRT_ID_CURSOR_LOC_HIGH, 0x00);
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WCrt(ba, CRT_ID_CURSOR_LOC_LOW , 0x00);
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/*
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* Enter text mode
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*/
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WCrt(ba, CRT_ID_MODE_CONTROL , 0xa3);
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WAttr(ba, ACT_ID_ATTR_MODE_CNTL | 0x20, 0x0a);
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}
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