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24eaa054a9
freebsd-skq/sys/dev/gfb/gfb_pci.c
mux 541937cf73 Cleanup of the d_mmap_t interface. 
- Get rid of the useless atop() / pmap_phys_address() detour.  The
  device mmap handlers must now give back the physical address
  without atop()'ing it.
- Don't borrow the physical address of the mapping in the returned
  int.  Now we properly pass a vm_offset_t * and expect it to be
  filled by the mmap handler when the mapping was successful.  The
  mmap handler must now return 0 when successful, any other value
  is considered as an error.  Previously, returning -1 was the only
  way to fail.  This change thus accidentally fixes some devices
  which were bogusly returning errno constants which would have been
  considered as addresses by the device pager.
- Garbage collect the poorly named pmap_phys_address() now that it's
  no longer used.
- Convert all the d_mmap_t consumers to the new API.

I'm still not sure wheter we need a __FreeBSD_version bump for this,
since and we didn't guarantee API/ABI stability until 5.1-RELEASE.

Discussed with:		alc, phk, jake
Reviewed by:		peter
Compile-tested on:	LINT (i386), GENERIC (alpha and sparc64)
Runtime-tested on:	i386
2003-02-25 03:21:22 +00:00

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/*
* 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.
*
* Copyright (c) 2000 Andrew Miklic, Andrew Gallatin, and Thomas V. Crimi
*/
#include "opt_fb.h"
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/proc.h>
#include <sys/fcntl.h>
#include <sys/malloc.h>
#include <sys/fbio.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>
#include <machine/md_var.h>
#include <machine/pc/bios.h>
#include <machine/clock.h>
#include <machine/bus_memio.h>
#include <machine/bus.h>
#include <machine/pc/vesa.h>
#include <machine/resource.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <dev/fb/fbreg.h>
#include <dev/fb/gfb.h>
#include <dev/gfb/gfb_pci.h>
#ifdef __alpha__
#include <machine/rpb.h>
#include <machine/cpu.h>
#endif /* __alpha__ */
#if 0
static devclass_t gfb_devclass;
#endif
#ifdef __alpha__
extern void sccnattach(void);
#endif /* __alpha__ */
extern struct gfb_font bold8x16;
extern struct gfb_softc *gfb_device_softcs[2][16];
int
pcigfb_attach(device_t dev)
{
int s;
gfb_softc_t sc;
video_adapter_t *adp;
int unit, flags, error, rid, va_index;
#ifdef __alpha__
struct ctb *ctb;
#endif /* __alpha__ */
s = splimp();
error = 0;
unit = device_get_unit(dev);
flags = device_get_flags(dev);
sc = device_get_softc(dev);
sc->rev = pci_get_revid(dev);
rid = GFB_MEM_BASE_RID;
sc->res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 1,
RF_ACTIVE|PCI_RF_DENSE);
if(sc->res == NULL) {
device_printf(dev, "couldn't map memory\n");
goto fail;
}
sc->btag = rman_get_bustag(sc->res);
sc->bhandle = rman_get_bushandle(sc->res);
/* Allocate interrupt (irq)... */
rid = 0x0;
sc->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
RF_SHAREABLE|RF_ACTIVE);
if(sc->irq == NULL) {
device_printf(dev, "Couldn't map interrupt\n");
goto fail;
}
if((va_index = vid_find_adapter(sc->driver_name, unit)) < 0) {
sc->adp = (video_adapter_t *)malloc(sizeof(video_adapter_t),
M_DEVBUF, M_NOWAIT);
adp = sc->adp;
bzero(adp, sizeof(video_adapter_t));
vid_init_struct(adp, sc->driver_name, sc->type, unit);
if(vid_register(adp) < 0) {
free(sc->adp, M_DEVBUF);
goto fail;
}
adp->va_flags |= V_ADP_REGISTERED;
adp->va_model = sc->model;
adp->va_mem_base = (vm_offset_t)rman_get_virtual(sc->res);
adp->va_mem_size = rman_get_end(sc->res) -
rman_get_start(sc->res);
adp->va_io_base = NULL;
adp->va_io_size = 0;
adp->va_crtc_addr = NULL;
gfb_device_softcs[sc->model][unit] = sc;
sc->gfbc = (struct gfb_conf *)malloc(sizeof(struct gfb_conf),
M_DEVBUF, M_NOWAIT);
bzero(sc->gfbc, sizeof(struct gfb_conf));
if((*vidsw[adp->va_index]->init)(unit, adp, flags)) {
device_printf(dev, "Couldn't initialize adapter\n");
vid_unregister(adp);
gfb_device_softcs[sc->model][unit] = NULL;
free(sc->gfbc, M_DEVBUF);
free(sc->adp, M_DEVBUF);
goto fail;
}
sc->gfbc->palette.red =
(u_char *)malloc(sc->gfbc->palette.count, M_DEVBUF,
M_NOWAIT);
sc->gfbc->palette.green =
(u_char *)malloc(sc->gfbc->palette.count, M_DEVBUF,
M_NOWAIT);
sc->gfbc->palette.blue =
(u_char *)malloc(sc->gfbc->palette.count, M_DEVBUF,
M_NOWAIT);
sc->gfbc->cursor_palette.red =
(u_char *)malloc(sc->gfbc->cursor_palette.count, M_DEVBUF,
M_NOWAIT);
sc->gfbc->cursor_palette.green =
(u_char *)malloc(sc->gfbc->cursor_palette.count, M_DEVBUF,
M_NOWAIT);
sc->gfbc->cursor_palette.blue =
(u_char *)malloc(sc->gfbc->cursor_palette.count, M_DEVBUF,
M_NOWAIT);
if(gfb_init(unit, adp, flags)) {
device_printf(dev, "Couldn't initialize framebuffer\n");
vid_unregister(adp);
gfb_device_softcs[sc->model][unit] = NULL;
free(sc->gfbc->cursor_palette.blue, M_DEVBUF);
free(sc->gfbc->cursor_palette.green, M_DEVBUF);
free(sc->gfbc->cursor_palette.red, M_DEVBUF);
free(sc->gfbc->palette.blue, M_DEVBUF);
free(sc->gfbc->palette.green, M_DEVBUF);
free(sc->gfbc->palette.red, M_DEVBUF);
free(sc->gfbc, M_DEVBUF);
free(sc->adp, M_DEVBUF);
goto fail;
}
} else {
(*vidsw[va_index]->probe)(unit, &adp, (void *)sc->driver_name,
flags);
sc->adp = adp;
sc->gfbc = gfb_device_softcs[sc->model][unit]->gfbc;
gfb_device_softcs[sc->model][unit] = sc;
}
/*
This is a back-door for PCI devices--since FreeBSD no longer supports
PCI configuration-space accesses during the *configure() phase for
video adapters, we cannot identify a PCI device as the console during
the first call to sccnattach(). There must be a second chance for PCI
adapters to be recognized as the console, and this is it...
*/
#ifdef __alpha__
ctb = (struct ctb *)(((caddr_t)hwrpb) + hwrpb->rpb_ctb_off);
if (ctb->ctb_term_type == 3) /* Display adapter */
sccnattach();
#endif /* __alpha__ */
device_printf(dev, "Board type %s\n", sc->gfbc->name);
device_printf(dev, "%d x %d, %dbpp, %s RAMDAC\n",
sc->adp->va_info.vi_width, sc->adp->va_info.vi_height,
sc->adp->va_info.vi_depth, sc->gfbc->ramdac_name);
#ifdef FB_INSTALL_CDEV
/* attach a virtual frame buffer device */
error = fb_attach(makedev(0, unit), sc->adp, sc->cdevsw);
if(error)
goto fail;
if(bootverbose)
(*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose);
#if experimental
device_add_child(dev, "fb", -1);
bus_generic_attach(dev);
#endif /*experimental*/
#endif /*FB_INSTALL_CDEV*/
goto done;
fail:
if(sc->intrhand != NULL) {
bus_teardown_intr(dev, sc->irq, sc->intrhand);
sc->intrhand = NULL;
}
if(sc->irq != NULL) {
rid = 0x0;
bus_release_resource(dev, SYS_RES_IRQ, rid, sc->irq);
sc->irq = NULL;
}
if(sc->res != NULL) {
rid = GFB_MEM_BASE_RID;
bus_release_resource(dev, SYS_RES_MEMORY, rid, sc->res);
sc->res = NULL;
}
error = ENXIO;
done:
splx(s);
return(error);
}
int
pcigfb_detach(device_t dev)
{
struct gfb_softc *sc;
int rid;
sc = device_get_softc(dev);
#ifdef FB_INSTALL_CDEV
destroy_dev(sc->devt);
#endif /*FB_INSTALL_CDEV*/
bus_teardown_intr(dev, sc->irq, sc->intrhand);
rid = 0x0;
bus_release_resource(dev, SYS_RES_IRQ, rid, sc->irq);
rid = GFB_MEM_BASE_RID;
bus_release_resource(dev, SYS_RES_MEMORY, rid, sc->res);
return(0);
}
#ifdef FB_INSTALL_CDEV
int
pcigfb_open(dev_t dev, int flag, int mode, struct thread *td)
{
struct gfb_softc *sc;
int error;
sc = (struct gfb_softc *)devclass_get_softc(gfb_devclass, minor(dev));
if(sc == NULL)
error = ENXIO;
else if(mode & (O_CREAT | O_APPEND | O_TRUNC))
error = ENODEV;
else
error = genfbopen(&sc->gensc, sc->adp, flag, mode, td);
return(error);
}
int
pcigfb_close(dev_t dev, int flag, int mode, struct thread *td)
{
struct gfb_softc *sc;
sc = (struct gfb_softc *)devclass_get_softc(gfb_devclass, minor(dev));
return genfbclose(&sc->gensc, sc->adp, flag, mode, td);
}
int
pcigfb_read(dev_t dev, struct uio *uio, int flag)
{
struct gfb_softc *sc;
sc = (struct gfb_softc *)devclass_get_softc(gfb_devclass, minor(dev));
return genfbread(&sc->gensc, sc->adp, uio, flag);
}
int
pcigfb_write(dev_t dev, struct uio *uio, int flag)
{
struct gfb_softc *sc;
sc = (struct gfb_softc *)devclass_get_softc(gfb_devclass, minor(dev));
return genfbwrite(&sc->gensc, sc->adp, uio, flag);
}
int
pcigfb_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
{
struct gfb_softc *sc;
sc = (struct gfb_softc *)devclass_get_softc(gfb_devclass, minor(dev));
return genfbioctl(&sc->gensc, sc->adp, cmd, arg, flag, td);
}
int
pcigfb_mmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int prot)
{
struct gfb_softc *sc;
sc = (struct gfb_softc *)devclass_get_softc(gfb_devclass, minor(dev));
return genfbmmap(&sc->gensc, sc->adp, offset, paddr, prot);
}
#endif /*FB_INSTALL_CDEV*/
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