Preliminary CFB support. Does not work as machine's console (for two
reasons: it won't attach as console, and there's currently no way to do keyboard input on TC machines), and has no real RAMDAC (colormap, cursor, etc.) support. Digital UNIX does not support CFB frame buffers in the Alpha, but they appear to work OK (with an appropriate monitor) in my 3000/300.
This commit is contained in:
cgd
parent
1668855fc5
commit
49c46e1789
59
sys/arch/alpha/include/cfbreg.h
Normal file
59
sys/arch/alpha/include/cfbreg.h
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@ -0,0 +1,59 @@
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/* $NetBSD: cfbreg.h,v 1.1 1996/05/01 23:25:00 cgd Exp $ */
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/*
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* Copyright (c) 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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||||
* Permission to use, copy, modify and distribute this software and
|
||||
* its documentation is hereby granted, provided that both the copyright
|
||||
* notice and this permission notice appear in all copies of the
|
||||
* software, derivative works or modified versions, and any portions
|
||||
* thereof, and that both notices appear in supporting documentation.
|
||||
*
|
||||
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
|
||||
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
|
||||
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
||||
*
|
||||
* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
|
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* rights to redistribute these changes.
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*/
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/*
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* Color Frame Buffer definitions, from:
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* ``PMAG-BA TURBOchannel Color Frame Buffer Functional Specification
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* (Revision 1.2)'', availalable via anonymous FTP from gatekeeper.dec.com.
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*
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* All definitions are in "dense" TurboChannel space.
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*/
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/*
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* Size of the CFB address space.
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*/
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#define CFB_SIZE 0x400000
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/*
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* Offsets into slot space of each functional unit.
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*/
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#define CFB_FB_OFFSET 0x000000 /* Frame buffer */
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#define CFB_FB_SIZE 0x100000
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#define CFB_RAMDAC_OFFSET 0x200000 /* Bt495 RAMDAC Registers */
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#define CFB_RAMDAC_SIZE 0x100000
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#define CFB_IREQCTRL_OFFSET 0x300000 /* IReq Control region */
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#define CFB_IREQCTRL_SIZE 0x080000
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/*
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* Bt459 RAMDAC registers (offsets from CFB_RAMDAC_OFFSET)
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*/
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#define CFB_RAMDAC_ADDRLOW 0x0000 /* Address register low byte */
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#define CFB_RAMDAC_ADDRHIGH 0x0004 /* Address register high byte */
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#define CFB_RAMDAC_REGDATA 0x0008 /* Register addressed by addr reg */
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#define CFB_RAMDAC_CMAPDATA 0x000c /* Colormap loc addressed by addr reg */
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346
sys/arch/alpha/tc/cfb.c
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346
sys/arch/alpha/tc/cfb.c
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@ -0,0 +1,346 @@
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/* $NetBSD: cfb.c,v 1.1 1996/05/01 23:25:03 cgd Exp $ */
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/*
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* Copyright (c) 1995, 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
|
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* its documentation is hereby granted, provided that both the copyright
|
||||
* notice and this permission notice appear in all copies of the
|
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* software, derivative works or modified versions, and any portions
|
||||
* thereof, and that both notices appear in supporting documentation.
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||||
*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
|
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* rights to redistribute these changes.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <sys/buf.h>
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#include <sys/conf.h>
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#include <sys/ioctl.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <dev/tc/tcvar.h>
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#include <machine/cfbreg.h>
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#include <alpha/tc/cfbvar.h>
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#if 0
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#include <alpha/tc/bt459reg.h>
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#endif
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#include <dev/rcons/raster.h>
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#include <alpha/wscons/wscons_raster.h>
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#include <alpha/wscons/wsconsvar.h>
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#include <machine/fbio.h>
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#include <machine/autoconf.h>
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#include <machine/pte.h>
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int cfbmatch __P((struct device *, void *, void *));
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void cfbattach __P((struct device *, struct device *, void *));
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int cfbprint __P((void *, char *));
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struct cfattach cfb_ca = {
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sizeof(struct cfb_softc), cfbmatch, cfbattach,
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};
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struct cfdriver cfb_cd = {
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NULL, "cfb", DV_DULL,
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};
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void cfb_getdevconfig __P((tc_addr_t dense_addr, struct cfb_devconfig *dc));
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struct cfb_devconfig cfb_console_dc;
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struct wscons_emulfuncs cfb_emulfuncs = {
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rcons_cursor, /* could use hardware cursor; punt */
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rcons_putstr,
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rcons_copycols,
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rcons_erasecols,
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rcons_copyrows,
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rcons_eraserows,
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};
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int cfbioctl __P((struct device *, u_long, caddr_t, int, struct proc *));
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int cfbmmap __P((struct device *, off_t, int));
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int cfbintr __P((void *));
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int
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cfbmatch(parent, match, aux)
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struct device *parent;
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void *match, *aux;
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{
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struct cfdata *cf = match;
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struct tc_attach_args *ta = aux;
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if (strncmp("PMAG-BA ", ta->ta_modname, TC_ROM_LLEN) != 0)
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return (0);
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return (10);
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}
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void
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cfb_getdevconfig(dense_addr, dc)
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tc_addr_t dense_addr;
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struct cfb_devconfig *dc;
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{
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struct raster *rap;
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struct rcons *rcp;
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char *ramdacregp;
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int i;
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dc->dc_vaddr = dense_addr;
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dc->dc_paddr = k0segtophys(dc->dc_vaddr); /* XXX */
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dc->dc_size = CFB_SIZE;
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ramdacregp = (char *)dc->dc_vaddr + CFB_RAMDAC_OFFSET;
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dc->dc_wid = 1024;
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dc->dc_ht = 864;
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dc->dc_depth = 8; /* 8 plane */
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dc->dc_rowbytes = dc->dc_wid * (dc->dc_depth / 8);
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dc->dc_videobase = dc->dc_vaddr + CFB_FB_OFFSET;
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/* Initialize the RAMDAC/colormap */
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/* start XXX XXX XXX */
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(*(volatile u_int32_t *)(ramdacregp + CFB_RAMDAC_ADDRLOW)) = 0;
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(*(volatile u_int32_t *)(ramdacregp + CFB_RAMDAC_ADDRHIGH)) = 0;
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tc_wmb();
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for (i = 0; i < 256; i++) {
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(*(volatile u_int32_t *)(ramdacregp + CFB_RAMDAC_CMAPDATA)) =
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i ? 0xff : 0;
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tc_wmb();
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(*(volatile u_int32_t *)(ramdacregp + CFB_RAMDAC_CMAPDATA)) =
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i ? 0xff : 0;
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tc_wmb();
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(*(volatile u_int32_t *)(ramdacregp + CFB_RAMDAC_CMAPDATA)) =
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i ? 0xff : 0;
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tc_wmb();
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}
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/* end XXX XXX XXX */
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/* clear the screen */
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for (i = 0; i < dc->dc_ht * dc->dc_rowbytes; i += sizeof(u_int32_t))
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*(u_int32_t *)(dc->dc_videobase + i) = 0x00000000;
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rap = &dc->dc_raster;
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rap->width = dc->dc_wid;
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rap->height = dc->dc_ht;
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rap->depth = 8;
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rap->linelongs = dc->dc_rowbytes / sizeof(u_int32_t);
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rap->pixels = (u_int32_t *)dc->dc_videobase;
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/* initialize the raster console blitter */
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rcp = &dc->dc_rcons;
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rcp->rc_sp = rap;
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rcp->rc_crow = rcp->rc_ccol = -1;
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rcp->rc_crowp = &rcp->rc_crow;
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rcp->rc_ccolp = &rcp->rc_ccol;
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rcons_init(rcp, 34, 80);
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}
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void
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cfbattach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct cfb_softc *sc = (struct cfb_softc *)self;
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struct tc_attach_args *ta = aux;
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struct wscons_attach_args waa;
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struct wscons_odev_spec *wo;
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int console;
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char *x;
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console = 0; /* XXX */
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if (console)
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sc->sc_dc = &cfb_console_dc;
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else {
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sc->sc_dc = (struct cfb_devconfig *)
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malloc(sizeof(struct cfb_devconfig), M_DEVBUF, M_WAITOK);
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cfb_getdevconfig(ta->ta_addr, sc->sc_dc);
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}
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if (sc->sc_dc->dc_vaddr == NULL) {
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printf(": couldn't map memory space; punt!\n");
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return;
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}
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printf(": %d x %d, %dbpp\n", sc->sc_dc->dc_wid, sc->sc_dc->dc_ht,
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sc->sc_dc->dc_depth);
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/* Establish an interrupt handler, and clear any pending interrupts */
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tc_intr_establish(parent, ta->ta_cookie, TC_IPL_TTY, cfbintr, sc);
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*(volatile u_int32_t *)(sc->sc_dc->dc_vaddr + CFB_IREQCTRL_OFFSET) = 0;
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/* initialize the raster */
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waa.waa_isconsole = console;
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wo = &waa.waa_odev_spec;
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wo->wo_ef = &cfb_emulfuncs;
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wo->wo_efa = &sc->sc_dc->dc_rcons;
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wo->wo_nrows = sc->sc_dc->dc_rcons.rc_maxrow;
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wo->wo_ncols = sc->sc_dc->dc_rcons.rc_maxcol;
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wo->wo_crow = 0;
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wo->wo_ccol = 0;
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wo->wo_ioctl = cfbioctl;
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wo->wo_mmap = cfbmmap;
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config_found(self, &waa, cfbprint);
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}
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int
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cfbprint(aux, pnp)
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void *aux;
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char *pnp;
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{
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if (pnp)
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printf("wscons at %s", pnp);
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return (UNCONF);
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}
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int
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cfbioctl(dev, cmd, data, flag, p)
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struct device *dev;
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u_long cmd;
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caddr_t data;
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int flag;
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struct proc *p;
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{
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struct cfb_softc *sc = (struct cfb_softc *)dev;
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struct cfb_devconfig *dc = sc->sc_dc;
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switch (cmd) {
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case FBIOGTYPE:
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#define fbt ((struct fbtype *)data)
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fbt->fb_type = FBTYPE_CFB;
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fbt->fb_height = sc->sc_dc->dc_ht;
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fbt->fb_width = sc->sc_dc->dc_wid;
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fbt->fb_depth = sc->sc_dc->dc_depth;
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fbt->fb_cmsize = 256; /* XXX ??? */
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fbt->fb_size = sc->sc_dc->dc_size;
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#undef fbt
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return (0);
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#if 0
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case FBIOPUTCMAP:
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return (*tgar->tgar_set_cmap)(dc, (struct fbcmap *)data);
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case FBIOGETCMAP:
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return (*tgar->tgar_get_cmap)(dc, (struct fbcmap *)data);
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#endif
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case FBIOGATTR:
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return (ENOTTY); /* XXX ? */
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#if 0
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case FBIOSVIDEO:
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if (*(int *)data == FBVIDEO_OFF)
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cfb_blank(sc->sc_dc);
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else
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cfb_unblank(sc->sc_dc);
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return (0);
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#endif
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case FBIOGVIDEO:
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*(int *)data = dc->dc_blanked ? FBVIDEO_OFF : FBVIDEO_ON;
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return (0);
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#if 0
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case FBIOSCURSOR:
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return (*tgar->tgar_set_cursor)(dc, (struct fbcursor *)data);
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case FBIOGCURSOR:
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return (*tgar->tgar_get_cursor)(dc, (struct fbcursor *)data);
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case FBIOSCURPOS:
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return (*tgar->tgar_set_curpos)(dc, (struct fbcurpos *)data);
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case FBIOGCURPOS:
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return (*tgar->tgar_get_curpos)(dc, (struct fbcurpos *)data);
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case FBIOGCURMAX:
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return (*tgar->tgar_get_curmax)(dc, (struct fbcurpos *)data);
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#endif
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}
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return (-1);
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}
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int
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cfbmmap(dev, offset, prot)
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struct device *dev;
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off_t offset;
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int prot;
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{
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struct cfb_softc *sc = (struct cfb_softc *)dev;
|
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|
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if (offset > CFB_SIZE)
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return -1;
|
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return alpha_btop(sc->sc_dc->dc_paddr + offset);
|
||||
}
|
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|
||||
int
|
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cfbintr(v)
|
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void *v;
|
||||
{
|
||||
struct cfb_softc *sc = v;
|
||||
|
||||
*(volatile u_int32_t *)(sc->sc_dc->dc_vaddr + CFB_IREQCTRL_OFFSET) = 0;
|
||||
|
||||
return (1);
|
||||
}
|
||||
|
||||
#if 0
|
||||
void
|
||||
tga_console(bc, pc, bus, device, function)
|
||||
bus_chipset_tag_t bc;
|
||||
pci_chipset_tag_t pc;
|
||||
int bus, device, function;
|
||||
{
|
||||
struct tga_devconfig *dcp = &tga_console_dc;
|
||||
struct wscons_odev_spec wo;
|
||||
|
||||
tga_getdevconfig(bc, pc, pci_make_tag(pc, bus, device, function), dcp);
|
||||
|
||||
/* sanity checks */
|
||||
if (dcp->dc_vaddr == NULL)
|
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panic("tga_console(%d, %d): couldn't map memory space",
|
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device, function);
|
||||
if (dcp->dc_tgaconf == NULL)
|
||||
panic("tga_console(%d, %d): unknown board configuration",
|
||||
device, function);
|
||||
|
||||
/*
|
||||
* Initialize the RAMDAC but DO NOT allocate any private storage.
|
||||
* Initialization includes disabling cursor, setting a sane
|
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* colormap, etc. It will be reinitialized in tgaattach().
|
||||
*/
|
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(*dcp->dc_tgaconf->tgac_ramdac->tgar_init)(dcp, 0);
|
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|
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wo.wo_ef = &tga_emulfuncs;
|
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wo.wo_efa = &dcp->dc_rcons;
|
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wo.wo_nrows = dcp->dc_rcons.rc_maxrow;
|
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wo.wo_ncols = dcp->dc_rcons.rc_maxcol;
|
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wo.wo_crow = 0;
|
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wo.wo_ccol = 0;
|
||||
/* ioctl and mmap are unused until real attachment. */
|
||||
|
||||
wscons_attach_console(&wo);
|
||||
}
|
||||
#endif
|
||||
62
sys/arch/alpha/tc/cfbvar.h
Normal file
62
sys/arch/alpha/tc/cfbvar.h
Normal file
@ -0,0 +1,62 @@
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/* $NetBSD: cfbvar.h,v 1.1 1996/05/01 23:25:04 cgd Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Author: Chris G. Demetriou
|
||||
*
|
||||
* Permission to use, copy, modify and distribute this software and
|
||||
* its documentation is hereby granted, provided that both the copyright
|
||||
* notice and this permission notice appear in all copies of the
|
||||
* software, derivative works or modified versions, and any portions
|
||||
* thereof, and that both notices appear in supporting documentation.
|
||||
*
|
||||
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
|
||||
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
|
||||
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
||||
*
|
||||
* Carnegie Mellon requests users of this software to return to
|
||||
*
|
||||
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
||||
* School of Computer Science
|
||||
* Carnegie Mellon University
|
||||
* Pittsburgh PA 15213-3890
|
||||
*
|
||||
* any improvements or extensions that they make and grant Carnegie the
|
||||
* rights to redistribute these changes.
|
||||
*/
|
||||
|
||||
#include <machine/cfbreg.h>
|
||||
#include <dev/rcons/raster.h>
|
||||
#include <alpha/wscons/wsconsvar.h>
|
||||
#include <alpha/wscons/wscons_raster.h>
|
||||
|
||||
struct cfb_devconfig;
|
||||
struct fbcmap;
|
||||
struct fbcursor;
|
||||
struct fbcurpos;
|
||||
|
||||
struct cfb_devconfig {
|
||||
vm_offset_t dc_vaddr; /* memory space virtual base address */
|
||||
vm_offset_t dc_paddr; /* memory space physical base address */
|
||||
vm_offset_t dc_size; /* size of slot memory */
|
||||
|
||||
int dc_wid; /* width of frame buffer */
|
||||
int dc_ht; /* height of frame buffer */
|
||||
int dc_depth; /* depth, bits per pixel */
|
||||
int dc_rowbytes; /* bytes in a FB scan line */
|
||||
|
||||
vm_offset_t dc_videobase; /* base of flat frame buffer */
|
||||
|
||||
struct raster dc_raster; /* raster description */
|
||||
struct rcons dc_rcons; /* raster blitter control info */
|
||||
|
||||
int dc_blanked; /* currently has video disabled */
|
||||
};
|
||||
|
||||
struct cfb_softc {
|
||||
struct device sc_dev;
|
||||
|
||||
struct cfb_devconfig *sc_dc; /* device configuration */
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user