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/* $OpenBSD: vga_pci.c,v 1.74 2013/12/06 21:03:04 deraadt Exp $ */
/* $NetBSD: vga_pci.c,v 1.3 1998/06/08 06:55:58 thorpej Exp $ */
/*
* Copyright (c) 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Frank van der Linden for Wasabi Systems, Inc.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/
/*
* 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 "vga.h"
#include "drm.h"
#if defined(__i386__) || defined(__amd64__)
#include "acpi.h"
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/agpio.h>
#include <uvm/uvm.h>
#include <machine/bus.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/pci/agpvar.h>
#include <dev/ic/mc6845reg.h>
#include <dev/ic/pcdisplayvar.h>
#include <dev/ic/vgareg.h>
#include <dev/ic/vgavar.h>
#include <dev/pci/vga_pcivar.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplayvar.h>
#ifdef X86EMU
#include <machine/vga_post.h>
#endif
#ifdef VESAFB
#include <dev/vesa/vesabiosvar.h>
#endif
#include "intagp.h"
int vga_pci_match(struct device *, void *, void *);
void vga_pci_attach(struct device *, struct device *, void *);
int vga_pci_activate(struct device *, int);
paddr_t vga_pci_mmap(void* v, off_t off, int prot);
#if NINTAGP > 0
int intagpsubmatch(struct device *, void *, void *);
int intagp_print(void *, const char *);
#endif
#ifdef VESAFB
int vesafb_putcmap(struct vga_pci_softc *, struct wsdisplay_cmap *);
int vesafb_getcmap(struct vga_pci_softc *, struct wsdisplay_cmap *);
#endif
#if !defined(SMALL_KERNEL) && NACPI > 0
void vga_save_state(struct vga_pci_softc *);
void vga_restore_state(struct vga_pci_softc *);
#endif
/*
* Function pointers for wsconsctl parameter handling.
* XXX These should be per-softc, but right now we only attach
* XXX a single vga@pci instance, so this will do.
*/
int (*ws_get_param)(struct wsdisplay_param *);
int (*ws_set_param)(struct wsdisplay_param *);
struct cfattach vga_pci_ca = {
sizeof(struct vga_pci_softc), vga_pci_match, vga_pci_attach,
NULL, vga_pci_activate
};
#if !defined(SMALL_KERNEL) && NACPI > 0
int vga_pci_do_post;
extern int do_real_mode_post;
struct vga_device_description {
u_int16_t rval[4];
u_int16_t rmask[4];
char vga_pci_post;
char real_mode_post;
};
static const struct vga_device_description vga_devs[] = {
/*
* Header description:
*
* First entry is a list of the pci video information in the following
* order: VENDOR, PRODUCT, SUBVENDOR, SUBPRODUCT
*
* The next entry is a list of corresponding masks.
*
* Finally the last two values set what resume should do, repost with
* vga_pci (i.e. the x86emulator) or with a locore call to the video
* bios.
*/
{ /* All machines with Intel US15W (until more evidence) */
{ PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_US15W_IGD,
0x0000, 0x0000 },
{ 0xffff, 0xffff, 0x0000, 0x0000 }, 1, 0
},
{ /* All machines with Intel US15L (until more evidence) */
{ PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_US15L_IGD,
0x0000, 0x0000 },
{ 0xffff, 0xffff, 0x0000, 0x0000 }, 1, 0
},
};
#endif
int
vga_pci_match(struct device *parent, void *match, void *aux)
{
struct pci_attach_args *pa = aux;
if (DEVICE_IS_VGA_PCI(pa->pa_class) == 0)
return (0);
/* check whether it is disabled by firmware */
if ((pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG)
& (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE))
!= (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE))
return (0);
/* If it's the console, we have a winner! */
if (vga_is_console(pa->pa_iot, WSDISPLAY_TYPE_PCIVGA))
return (1);
/*
* If we might match, make sure that the card actually looks OK.
*/
if (!vga_common_probe(pa->pa_iot, pa->pa_memt))
return (0);
return (1);
}
void
vga_pci_attach(struct device *parent, struct device *self, void *aux)
{
struct pci_attach_args *pa = aux;
pcireg_t reg;
struct vga_pci_softc *sc = (struct vga_pci_softc *)self;
#if !defined(SMALL_KERNEL) && NACPI > 0
int prod, vend, subid, subprod, subvend, i;
#endif
/*
* Enable bus master; X might need this for accelerated graphics.
*/
reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
reg |= PCI_COMMAND_MASTER_ENABLE;
pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, reg);
sc->sc_type = WSDISPLAY_TYPE_PCIVGA;
#ifdef VESAFB
if (vesabios_softc != NULL && vesabios_softc->sc_nmodes > 0) {
sc->sc_textmode = vesafb_get_mode(sc);
printf(", vesafb\n");
sc->sc_vc = vga_extended_attach(self, pa->pa_iot, pa->pa_memt,
sc->sc_type, vga_pci_mmap);
return;
}
#endif
printf("\n");
vga_pci_bar_init(sc, pa);
#if !defined(SMALL_KERNEL) && NACPI > 0
#ifdef X86EMU
if ((sc->sc_posth = vga_post_init(pa->pa_bus, pa->pa_device,
pa->pa_function)) == NULL)
printf("couldn't set up vga POST handler\n");
#endif
vend = PCI_VENDOR(pa->pa_id);
prod = PCI_PRODUCT(pa->pa_id);
subid = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
subvend = PCI_VENDOR(subid);
subprod = PCI_PRODUCT(subid);
for (i = 0; i < nitems(vga_devs); i++)
if ((vend & vga_devs[i].rmask[0]) == vga_devs[i].rval[0] &&
(prod & vga_devs[i].rmask[1]) == vga_devs[i].rval[1] &&
(subvend & vga_devs[i].rmask[2]) == vga_devs[i].rval[2] &&
(subprod & vga_devs[i].rmask[3]) == vga_devs[i].rval[3]) {
vga_pci_do_post = vga_devs[i].vga_pci_post;
if (sc->sc_dev.dv_unit == 0) /* main screen only */
do_real_mode_post = vga_devs[i].real_mode_post;
break;
}
#endif
#if NINTAGP > 0
/*
* attach intagp here instead of pchb so it can share mappings
* with the DRM.
*/
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL) {
config_found_sm(self, aux, intagp_print, intagpsubmatch);
}
#endif
#if NDRM > 0
config_found_sm(self, aux, NULL, vga_drmsubmatch);
#endif
sc->sc_vc = vga_common_attach(self, pa->pa_iot, pa->pa_memt,
sc->sc_type);
}
int
vga_pci_activate(struct device *self, int act)
{
int rv = 0;
#if !defined(SMALL_KERNEL) && NACPI > 0
struct vga_pci_softc *sc = (struct vga_pci_softc *)self;
#endif
switch (act) {
case DVACT_SUSPEND:
rv = config_activate_children(self, act);
#if !defined(SMALL_KERNEL) && NACPI > 0
/*
* Save the common vga state. This should theoretically only
* be necessary if we intend to POST, but it is preferrable
* to do it unconditionnaly, as many systems do not restore
* this state correctly upon resume.
*/
vga_save_state(sc);
#endif
break;
case DVACT_RESUME:
#if !defined(SMALL_KERNEL) && NACPI > 0
#if defined (X86EMU)
if (vga_pci_do_post) {
#ifdef obnoxious
printf("%s: reposting video using BIOS. Is this necessary?\n",
sc->sc_dev.dv_xname);
#endif
vga_post_call(sc->sc_posth);
}
#endif
vga_restore_state(sc);
#endif
rv = config_activate_children(self, act);
break;
default:
rv = config_activate_children(self, act);
break;
}
return (rv);
}
#if NINTAGP > 0
int
intagpsubmatch(struct device *parent, void *match, void *aux)
{
extern struct cfdriver intagp_cd;
struct cfdata *cf = match;
/* only allow intagp to attach */
if (cf->cf_driver == &intagp_cd)
return ((*cf->cf_attach->ca_match)(parent, match, aux));
return (0);
}
int
intagp_print(void *vaa, const char *pnp)
{
if (pnp)
printf("intagp at %s", pnp);
return (UNCONF);
}
#endif
paddr_t
vga_pci_mmap(void *v, off_t off, int prot)
{
#ifdef VESAFB
struct vga_config *vc = (struct vga_config *)v;
struct vga_pci_softc *sc = (struct vga_pci_softc *)vc->vc_softc;
if (sc->sc_mode == WSDISPLAYIO_MODE_DUMBFB) {
if (off < 0 || off > vesabios_softc->sc_size)
return (-1);
return (sc->sc_base + off);
}
#endif
return -1;
}
int
vga_pci_cnattach(bus_space_tag_t iot, bus_space_tag_t memt,
pci_chipset_tag_t pc, int bus, int device, int function)
{
return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_PCIVGA, 0));
}
int
vga_pci_ioctl(void *v, u_long cmd, caddr_t addr, int flag, struct proc *pb)
{
int error = 0;
#ifdef VESAFB
struct vga_config *vc = (struct vga_config *)v;
struct vga_pci_softc *sc = (struct vga_pci_softc *)vc->vc_softc;
struct wsdisplay_fbinfo *wdf;
struct wsdisplay_gfx_mode *gfxmode;
int mode;
#endif
switch (cmd) {
#ifdef VESAFB
case WSDISPLAYIO_SMODE:
mode = *(u_int *)addr;
switch (mode) {
case WSDISPLAYIO_MODE_EMUL:
/* back to text mode */
vesafb_set_mode(sc, sc->sc_textmode);
sc->sc_mode = mode;
break;
case WSDISPLAYIO_MODE_DUMBFB:
if (sc->sc_gfxmode == -1)
return (-1);
vesafb_set_mode(sc, sc->sc_gfxmode);
sc->sc_mode = mode;
break;
default:
error = -1;
}
break;
case WSDISPLAYIO_GINFO:
if (sc->sc_gfxmode == -1)
return (-1);
wdf = (void *)addr;
wdf->height = sc->sc_height;
wdf->width = sc->sc_width;
wdf->depth = sc->sc_depth;
wdf->cmsize = 256;
break;
case WSDISPLAYIO_LINEBYTES:
if (sc->sc_gfxmode == -1)
return (-1);
*(u_int *)addr = sc->sc_linebytes;
break;
case WSDISPLAYIO_SVIDEO:
case WSDISPLAYIO_GVIDEO:
break;
case WSDISPLAYIO_GETCMAP:
if (sc->sc_depth == 8)
error = vesafb_getcmap(sc,
(struct wsdisplay_cmap *)addr);
break;
case WSDISPLAYIO_PUTCMAP:
if (sc->sc_depth == 8)
error = vesafb_putcmap(sc,
(struct wsdisplay_cmap *)addr);
break;
case WSDISPLAYIO_GETSUPPORTEDDEPTH:
*(int *)addr = vesafb_get_supported_depth(sc);
break;
case WSDISPLAYIO_SETGFXMODE:
gfxmode = (struct wsdisplay_gfx_mode *)addr;
sc->sc_gfxmode = vesafb_find_mode(sc, gfxmode->width,
gfxmode->height, gfxmode->depth);
if (sc->sc_gfxmode == -1)
error = -1;
break;
#endif
case WSDISPLAYIO_GETPARAM:
if (ws_get_param != NULL)
return (*ws_get_param)((struct wsdisplay_param *)addr);
else
error = ENOTTY;
break;
case WSDISPLAYIO_SETPARAM:
if (ws_set_param != NULL)
return (*ws_set_param)((struct wsdisplay_param *)addr);
else
error = ENOTTY;
break;
default:
error = ENOTTY;
}
return (error);
}
#if !defined(SMALL_KERNEL) && NACPI > 0
void
vga_save_state(struct vga_pci_softc *sc)
{
struct vga_config *vc = sc->sc_vc;
struct vga_handle *vh;
struct vgascreen *scr;
size_t i;
char *buf;
if (vc == NULL)
return;
vh = &vc->hdl;
/*
* Save sequencer registers
*/
vga_ts_write(vh, syncreset, 1); /* stop sequencer */
buf = (char *)&sc->sc_save_ts;
*buf++ = 0;
for (i = 1; i < sizeof(sc->sc_save_ts); i++)
*buf++ = _vga_ts_read(vh, i);
vga_ts_write(vh, syncreset, 3); /* start sequencer */
/* pretend screen is not blanked */
sc->sc_save_ts.mode &= ~0x20;
sc->sc_save_ts.mode |= 0x80;
/*
* Save CRTC registers
*/
buf = (char *)&sc->sc_save_crtc;
for (i = 0; i < sizeof(sc->sc_save_crtc); i++)
*buf++ = _pcdisplay_6845_read(&vh->vh_ph, i);
/*
* Save ATC registers
*/
buf = (char *)&sc->sc_save_atc;
for (i = 0; i < sizeof(sc->sc_save_atc); i++)
*buf++ = _vga_attr_read(vh, i);
/*
* Save GDC registers
*/
buf = (char *)&sc->sc_save_gdc;
for (i = 0; i < sizeof(sc->sc_save_gdc); i++)
*buf++ = _vga_gdc_read(vh, i);
vga_save_palette(vc);
/* XXX should also save font data */
/*
* Save current screen contents if we have backing store for it,
* and intend to POST on resume.
* XXX Since we don't allocate backing store unless the second VT is
* XXX created, we could theoretically have no backing store available
* XXX at this point.
*/
if (vga_pci_do_post) {
scr = vc->active;
if (scr != NULL && scr->pcs.active && scr->pcs.mem != NULL)
bus_space_read_region_2(vh->vh_memt, vh->vh_memh,
scr->pcs.dispoffset, scr->pcs.mem,
scr->pcs.type->ncols * scr->pcs.type->nrows);
}
}
void
vga_restore_state(struct vga_pci_softc *sc)
{
struct vga_config *vc = sc->sc_vc;
struct vga_handle *vh;
struct vgascreen *scr;
size_t i;
char *buf;
if (vc == NULL)
return;
vh = &vc->hdl;
/*
* Restore sequencer registers
*/
vga_ts_write(vh, syncreset, 1); /* stop sequencer */
buf = (char *)&sc->sc_save_ts + 1;
for (i = 1; i < sizeof(sc->sc_save_ts); i++)
_vga_ts_write(vh, i, *buf++);
vga_ts_write(vh, syncreset, 3); /* start sequencer */
/*
* Restore CRTC registers
*/
/* unprotect registers 00-07 */
vga_6845_write(vh, vsynce,
vga_6845_read(vh, vsynce) & ~0x80);
buf = (char *)&sc->sc_save_crtc;
for (i = 0; i < sizeof(sc->sc_save_crtc); i++)
_pcdisplay_6845_write(&vh->vh_ph, i, *buf++);
/*
* Restore ATC registers
*/
buf = (char *)&sc->sc_save_atc;
for (i = 0; i < sizeof(sc->sc_save_atc); i++)
_vga_attr_write(vh, i, *buf++);
/*
* Restore GDC registers
*/
buf = (char *)&sc->sc_save_gdc;
for (i = 0; i < sizeof(sc->sc_save_gdc); i++)
_vga_gdc_write(vh, i, *buf++);
vga_restore_palette(vc);
/*
* Restore current screen contents if we have backing store for it,
* and have POSTed on resume.
* XXX Since we don't allocate backing store unless the second VT is
* XXX created, we could theoretically have no backing store available
* XXX at this point.
*/
if (vga_pci_do_post) {
scr = vc->active;
if (scr != NULL && scr->pcs.active && scr->pcs.mem != NULL)
bus_space_write_region_2(vh->vh_memt, vh->vh_memh,
scr->pcs.dispoffset, scr->pcs.mem,
scr->pcs.type->ncols * scr->pcs.type->nrows);
}
}
#endif
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