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/* $OpenBSD: vgafb_pci.c,v 1.31 2013/06/04 02:26:36 mpi Exp $ */
/* $NetBSD: vga_pci.c,v 1.4 1996/12/05 01:39:38 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 <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/rasops/rasops.h>
#include "drm.h"
#include <arch/macppc/pci/vgafbvar.h>
#include <dev/pci/vga_pcivar.h>
#ifdef DEBUG_VGAFB
#define DPRINTF(x...) do { printf(x); } while (0);
#else
#define DPRINTF(x...)
#endif
int vgafb_pci_match(struct device *, void *, void *);
void vgafb_pci_attach(struct device *, struct device *, void *);
void vgafb_pci_mem_init(struct vga_pci_softc *, uint32_t *, uint32_t *,
uint32_t *, uint32_t *);
const struct cfattach vgafb_pci_ca = {
sizeof(struct vga_pci_softc), vgafb_pci_match, vgafb_pci_attach,
};
pcitag_t vgafb_pci_console_tag;
struct vga_config vgafbcn;
void
vgafb_pci_mem_init(struct vga_pci_softc *dev, uint32_t *memaddr,
uint32_t *memsize, uint32_t *mmioaddr, uint32_t *mmiosize)
{
struct vga_pci_bar *bar;
int i;
*memsize = 0x0;
*mmiosize = 0x0;
for (i = 0; i < VGA_PCI_MAX_BARS; i++) {
bar = dev->bars[i];
if (bar == NULL)
continue;
DPRINTF("\nvgafb: 0x%04x: BAR ", bar->addr);
switch (PCI_MAPREG_TYPE(bar->maptype)) {
case PCI_MAPREG_TYPE_IO:
DPRINTF("io ");
break;
case PCI_MAPREG_TYPE_MEM:
if (bar->base == 0 || bar->maxsize == 0) {
/* ignore this entry */
} else if (*memsize == 0) {
/*
* first memory slot found goes into memory,
* this is for the case of no mmio
*/
*memaddr = bar->base;
*memsize = bar->maxsize;
} else {
/*
* Oh, we have a second 'memory'
* region, is this region the vga memory
* or mmio, we guess that memory is
* the larger of the two.
*/
if (*memsize >= bar->maxsize) {
/* this is the mmio */
*mmioaddr = bar->base;
*mmiosize = bar->maxsize;
} else {
/* this is the memory */
*mmioaddr = *memaddr;
*mmiosize = *memsize;
*memaddr = bar->base;
*memsize = bar->maxsize;
}
}
DPRINTF("mem ");
break;
}
if (bar->maptype == PCI_MAPREG_MEM_TYPE_64BIT) {
DPRINTF("64bit");
i++;
} else {
DPRINTF("addr: 0x%08x/0x%08x", bar->base, bar->maxsize);
}
}
/* ATI driver maps 0x80000 mmio, grr */
if (*mmiosize > 0 && *mmiosize < 0x80000) {
*mmiosize = 0x80000;
}
DPRINTF("\nvgafb: memaddr %x, memsize %x, mmioaddr %x, mmiosize %x",
*memaddr, *memsize, *mmioaddr, *mmiosize);
}
int
vgafb_pci_match(struct device *parent, void *match, void *aux)
{
struct pci_attach_args *pa = aux;
if (DEVICE_IS_VGA_PCI(pa->pa_class) == 0) {
/*
* XXX Graphic cards found in iMac G3 have a ``Misc''
* subclass, match them all.
*/
if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY ||
PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_DISPLAY_MISC)
return (0);
}
/* If it's the console, we have a winner! */
if (!bcmp(&pa->pa_tag, &vgafb_pci_console_tag, sizeof(pa->pa_tag))) {
return (1);
}
#ifdef DEBUG_VGAFB
{
int i;
pci_chipset_tag_t pc = pa->pa_pc;
for (i = 0x10; i < 0x24; i+=4) {
printf("vgafb confread %x %x\n",
i, pci_conf_read(pc, pa->pa_tag, i));
}
}
#endif
return (0);
}
void
vgafb_pci_attach(struct device *parent, struct device *self, void *aux)
{
struct pci_attach_args *pa = aux;
struct vga_pci_softc *sc = (struct vga_pci_softc *)self;
struct vga_config *vc;
u_int32_t memaddr, memsize;
u_int32_t mmioaddr, mmiosize;
int console;
pcireg_t reg;
vga_pci_bar_init(sc, pa);
vgafb_pci_mem_init(sc, &memaddr, &memsize, &mmioaddr, &mmiosize);
console = (!bcmp(&pa->pa_tag, &vgafb_pci_console_tag, sizeof(pa->pa_tag)));
if (console) {
vc = sc->sc_vc = &vgafbcn;
/*
* The previous size was not necessarily the real size
* but what is needed for the glass console.
*/
vc->membase = memaddr;
vc->memsize = memsize;
} else {
vc = sc->sc_vc = (struct vga_config *)
malloc(sizeof(struct vga_config), M_DEVBUF, M_WAITOK);
/* set up bus-independent VGA configuration */
vgafb_init(pa->pa_iot, pa->pa_memt, vc, memaddr, memsize);
}
if (mmiosize != 0) {
vc->mmiobase = mmioaddr;
vc->mmiosize = mmiosize;
printf (", mmio");
}
printf("\n");
/*
* 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);
vgafb_wsdisplay_attach(self, vc, console);
#if NDRM > 0
config_found_sm(self, aux, NULL, vga_drmsubmatch);
#endif
}
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