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Cleanup of the d_mmap_t interface.

Browse Source 
- 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
This commit is contained in:
Maxime Henrion 2003-02-25 03:21:22 +00:00
parent edf02ff15d
commit 07159f9c56
44 changed files with 122 additions and 163 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
sys/alpha/alpha/mem.c
View File

@ -222,7 +222,7 @@ mmrw(dev_t dev, struct uio *uio, int flags)
* instead of going through read/write *
\*******************************************************/
static int
memmmap(dev_t dev, vm_offset_t offset, int prot)
memmmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int prot)
{
/*
* /dev/mem is the only one that makes sense through this
@ -238,7 +238,8 @@ memmmap(dev_t dev, vm_offset_t offset, int prot)
*/
if ((prot & alpha_pa_access(atop((vm_offset_t)offset))) != prot)
return (-1);
return (alpha_btop(ALPHA_PHYS_TO_K0SEG(offset)));
*paddr = ALPHA_PHYS_TO_K0SEG(offset);
return (0);
}
static int

7
sys/alpha/alpha/pmap.c
View File

@ -2807,13 +2807,6 @@ pmap_page_protect(vm_page_t m, vm_prot_t prot)
}
}
vm_offset_t
pmap_phys_address(ppn)
int ppn;
{
return (alpha_ptob(ppn));
}
/*
* pmap_ts_referenced:
*

9
sys/amd64/amd64/mem.c
View File

@ -215,22 +215,25 @@ mmrw(dev_t dev, struct uio *uio, int flags)
* instead of going through read/write *
\*******************************************************/
static int
memmmap(dev_t dev, vm_offset_t offset, int prot)
memmmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int prot)
{
switch (minor(dev))
{
/* minor device 0 is physical memory */
case 0:
return (i386_btop(offset));
*paddr = offset;
break;
/* minor device 1 is kernel memory */
case 1:
return (i386_btop(vtophys(offset)));
*paddr = vtophys(offset);
break;
default:
return (-1);
}
return (0);
}
/*

7
sys/amd64/amd64/pmap.c
View File

@ -3124,13 +3124,6 @@ pmap_page_protect(vm_page_t m, vm_prot_t prot)
}
}
vm_offset_t
pmap_phys_address(ppn)
int ppn;
{
return (i386_ptob(ppn));
}
/*
* pmap_ts_referenced:
*

5
sys/dev/agp/agp.c
View File

@ -722,14 +722,15 @@ agp_ioctl(dev_t kdev, u_long cmd, caddr_t data, int fflag, struct thread *td)
}
static int
agp_mmap(dev_t kdev, vm_offset_t offset, int prot)
agp_mmap(dev_t kdev, vm_offset_t offset, vm_offset_t *paddr, int prot)
{
device_t dev = KDEV2DEV(kdev);
struct agp_softc *sc = device_get_softc(dev);
if (offset > AGP_GET_APERTURE(dev))
return -1;
return atop(rman_get_start(sc->as_aperture) + offset);
*paddr = rman_get_start(sc->as_aperture) + offset;
return 0;
}
/* Implementation of the kernel api */

5
sys/dev/bktr/bktr_os.c
View File

@ -753,7 +753,7 @@ bktr_ioctl( dev_t dev, ioctl_cmd_t cmd, caddr_t arg, int flag, struct thread *td
*
*/
static int
bktr_mmap( dev_t dev, vm_offset_t offset, int nprot )
bktr_mmap( dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int nprot )
{
int unit;
bktr_ptr_t bktr;
@ -779,7 +779,8 @@ bktr_mmap( dev_t dev, vm_offset_t offset, int nprot )
if (offset >= bktr->alloc_pages * PAGE_SIZE)
return( -1 );
return( atop(vtophys(bktr->bigbuf) + offset) );
*paddr = vtophys(bktr->bigbuf) + offset;
return( 0 );
}
static int

16
sys/dev/drm/drm_vm.h
View File

@ -5,7 +5,8 @@
#include <vm/vm.h>
#include <vm/pmap.h>
static int DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, int prot)
static int DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, vm_offset_t *paddr,
int prot)
{
drm_device_t *dev = kdev->si_drv1;
drm_device_dma_t *dma = dev->dma;
@ -19,10 +20,11 @@ static int DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, int prot)
physical = dma->pagelist[page];
DRM_DEBUG("0x%08x (page %lu) => 0x%08lx\n", offset, page, physical);
return atop(physical);
*paddr = physical;
return 0;
}
int DRM(mmap)(dev_t kdev, vm_offset_t offset, int prot)
int DRM(mmap)(dev_t kdev, vm_offset_t offset, vm_offset_t *paddr, int prot)
{
drm_device_t *dev = kdev->si_drv1;
drm_map_t *map = NULL;
@ -43,7 +45,7 @@ int DRM(mmap)(dev_t kdev, vm_offset_t offset, int prot)
if (dev->dma
&& offset >= 0
&& offset < ptoa(dev->dma->page_count))
return DRM(dma_mmap)(kdev, offset, prot);
return DRM(dma_mmap)(kdev, offset, paddr, prot);
/* A sequential search of a linked list is
fine here because: 1) there will only be
@ -72,9 +74,11 @@ int DRM(mmap)(dev_t kdev, vm_offset_t offset, int prot)
case _DRM_FRAME_BUFFER:
case _DRM_REGISTERS:
case _DRM_AGP:
return atop(offset);
*paddr = offset;
return 0;
case _DRM_SHM:
return atop(vtophys(offset));
*paddr = vtophys(offset);
return 0;
default:
return -1; /* This should never happen. */
}

8
sys/dev/fb/fb.c
View File

@ -501,7 +501,7 @@ fbioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
}
static int
fbmmap(dev_t dev, vm_offset_t offset, int nprot)
fbmmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int nprot)
{
int unit;
@ -509,7 +509,7 @@ fbmmap(dev_t dev, vm_offset_t offset, int nprot)
if (vidcdevsw[unit] == NULL)
return ENXIO;
return (*vidcdevsw[unit]->d_mmap)(makedev(0, adapter[unit]->va_minor),
offset, nprot);
offset, paddr, nprot);
}
#if experimental
@ -591,9 +591,9 @@ int genfbioctl(genfb_softc_t *sc, video_adapter_t *adp, u_long cmd,
}
int genfbmmap(genfb_softc_t *sc, video_adapter_t *adp, vm_offset_t offset,
int prot)
vm_offset_t *paddr, int prot)
{
return (*vidsw[adp->va_index]->mmap)(adp, offset, prot);
return (*vidsw[adp->va_index]->mmap)(adp, offset, paddr, prot);
}
#endif /* FB_INSTALL_CDEV */

5
sys/dev/fb/fbreg.h
View File

@ -81,7 +81,8 @@ typedef int vi_blank_display_t(video_adapter_t *adp, int mode);
#define V_DISPLAY_STAND_BY 2
#define V_DISPLAY_SUSPEND 3
*/
typedef int vi_mmap_t(video_adapter_t *adp, vm_offset_t offset, int prot);
typedef int vi_mmap_t(video_adapter_t *adp, vm_offset_t offset,
vm_offset_t *paddr, int prot);
typedef int vi_ioctl_t(video_adapter_t *adp, u_long cmd, caddr_t data);
typedef int vi_clear_t(video_adapter_t *adp);
typedef int vi_fill_rect_t(video_adapter_t *adp, int val, int x, int y,
@ -212,7 +213,7 @@ int genfbwrite(genfb_softc_t *sc, video_adapter_t *adp,
int genfbioctl(genfb_softc_t *sc, video_adapter_t *adp,
u_long cmd, caddr_t arg, int flag, struct thread *td);
int genfbmmap(genfb_softc_t *sc, video_adapter_t *adp,
vm_offset_t offset, int prot);
vm_offset_t offset, vm_offset_t *paddr, int prot);
#endif /* FB_INSTALL_CDEV */

16
sys/dev/fb/gfb.c
View File

@ -451,20 +451,14 @@ gfb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
}
int
gfb_mmap(video_adapter_t *adp, vm_offset_t offset, int prot)
gfb_mmap(video_adapter_t *adp, vm_offset_t offset, vm_offset_t *paddr, int prot)
{
int error;
/* XXX */
if(offset > adp->va_window_size - PAGE_SIZE)
error = ENXIO;
#ifdef __i386__
error = i386_btop(adp->va_info.vi_window + offset);
#elsif defined(__alpha__)
error = alpha_btop(adp->va_info.vi_window + offset);
#else
error = ENXIO;
#endif
return(error);
return(ENXIO);
*paddr = adp->va_info.vi_window + offset;
return(0);
}
int

5
sys/dev/fb/s3_pci.c
View File

@ -389,9 +389,10 @@ s3lfb_blank_display(video_adapter_t *adp, int mode)
}
static int
s3lfb_mmap(video_adapter_t *adp, vm_offset_t offset, int prot)
s3lfb_mmap(video_adapter_t *adp, vm_offset_t offset, vm_offset_t *paddr,
int prot)
{
return (*prevvidsw->mmap)(adp, offset, prot);
return (*prevvidsw->mmap)(adp, offset, paddr, prot);
}
static int

19
sys/dev/fb/vga.c
View File

@ -133,9 +133,10 @@ vga_ioctl(dev_t dev, vga_softc_t *sc, u_long cmd, caddr_t arg, int flag,
}
int
vga_mmap(dev_t dev, vga_softc_t *sc, vm_offset_t offset, int prot)
vga_mmap(dev_t dev, vga_softc_t *sc, vm_offset_t offset, vm_offset_t *paddr,
int prot)
{
return genfbmmap(&sc->gensc, sc->adp, offset, prot);
return genfbmmap(&sc->gensc, sc->adp, offset, paddr, prot);
}
#endif /* FB_INSTALL_CDEV */
@ -2449,7 +2450,8 @@ vga_blank_display(video_adapter_t *adp, int mode)
* all adapters
*/
static int
vga_mmap_buf(video_adapter_t *adp, vm_offset_t offset, int prot)
vga_mmap_buf(video_adapter_t *adp, vm_offset_t offset, vm_offset_t *paddr,
int prot)
{
if (adp->va_info.vi_flags & V_INFO_LINEAR)
return -1;
@ -2463,15 +2465,8 @@ vga_mmap_buf(video_adapter_t *adp, vm_offset_t offset, int prot)
if (offset > adp->va_window_size - PAGE_SIZE)
return -1;
#ifdef __i386__
return i386_btop(adp->va_info.vi_window + offset);
#endif
#ifdef __alpha__
return alpha_btop(adp->va_info.vi_window + offset);
#endif
#ifdef __ia64__
return ia64_btop(adp->va_info.vi_window + offset);
#endif
*paddr = adp->va_info.vi_window + offset;
return 0;
}
#ifndef VGA_NO_MODE_CHANGE

2
sys/dev/fb/vgareg.h
View File

@ -87,7 +87,7 @@ int vga_write(dev_t dev, vga_softc_t *sc, struct uio *uio, int flag);
int vga_ioctl(dev_t dev, vga_softc_t *sc, u_long cmd, caddr_t arg,
int flag, struct thread *td);
int vga_mmap(dev_t dev, vga_softc_t *sc, vm_offset_t offset,
int prot);
vm_offset_t *paddr, int prot);
#endif
extern int (*vga_sub_configure)(int flags);

4
sys/dev/firewire/fwdev.c
View File

@ -921,13 +921,13 @@ fw_poll(dev_t dev, int events, fw_proc *td)
}
static int
fw_mmap (dev_t dev, vm_offset_t offset, int nproto)
fw_mmap (dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int nproto)
{
struct firewire_softc *fc;
int unit = DEV2UNIT(dev);
if (DEV_FWMEM(dev))
return fwmem_mmap(dev, offset, nproto);
return fwmem_mmap(dev, offset, paddr, nproto);
fc = devclass_get_softc(firewire_devclass, unit);

2
sys/dev/firewire/fwmem.c
View File

@ -419,7 +419,7 @@ fwmem_poll (dev_t dev, int events, fw_proc *td)
return EINVAL;
}
int
fwmem_mmap (dev_t dev, vm_offset_t offset, int nproto)
fwmem_mmap (dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int nproto)
{
return EINVAL;
}

4
sys/dev/gfb/gfb_pci.c
View File

@ -313,12 +313,12 @@ pcigfb_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
}
int
pcigfb_mmap(dev_t dev, vm_offset_t offset, int prot)
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, prot);
return genfbmmap(&sc->gensc, sc->adp, offset, paddr, prot);
}
#endif /*FB_INSTALL_CDEV*/

7
sys/dev/sound/pcm/dsp.c
View File

@ -990,11 +990,10 @@ dsp_poll(dev_t i_dev, int events, struct thread *td)
}
static int
dsp_mmap(dev_t i_dev, vm_offset_t offset, int nprot)
dsp_mmap(dev_t i_dev, vm_offset_t offset, vm_offset_t *paddr, int nprot)
{
struct pcm_channel *wrch = NULL, *rdch = NULL, *c;
intrmask_t s;
int ret;
if (nprot & PROT_EXEC)
return -1;
@ -1034,11 +1033,11 @@ dsp_mmap(dev_t i_dev, vm_offset_t offset, int nprot)
if (!(c->flags & CHN_F_MAPPED))
c->flags |= CHN_F_MAPPED;
ret = atop(vtophys(sndbuf_getbufofs(c->bufsoft, offset)));
*paddr = vtophys(sndbuf_getbufofs(c->bufsoft, offset));
relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR);
splx(s);
return ret;
return 0;
}
int

4
sys/dev/syscons/syscons.c
View File

@ -3364,14 +3364,14 @@ scgetc(sc_softc_t *sc, u_int flags)
}
static int
scmmap(dev_t dev, vm_offset_t offset, int nprot)
scmmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int nprot)
{
scr_stat *scp;
scp = SC_STAT(dev);
if (scp != scp->sc->cur_scp)
return -1;
return (*vidsw[scp->sc->adapter]->mmap)(scp->sc->adp, offset, nprot);
return (*vidsw[scp->sc->adapter]->mmap)(scp->sc->adp, offset, paddr, nprot);
}
static int

9
sys/dev/tdfx/tdfx_pci.c
View File

@ -441,7 +441,7 @@ tdfx_close(dev_t dev, int fflag, int devtype, struct thread *td)
}
static int
tdfx_mmap(dev_t dev, vm_offset_t offset, int nprot)
tdfx_mmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int nprot)
{
/*
* mmap(2) is called by a user process to request that an area of memory
@ -472,14 +472,17 @@ tdfx_mmap(dev_t dev, vm_offset_t offset, int nprot)
/* We must stay within the bound of our address space */
if((offset & 0xff000000) == tdfx_info[0]->addr0) {
offset &= 0xffffff;
return atop(rman_get_start(tdfx_info[0]->memrange) + offset);
*paddr = rman_get_start(tdfx_info[0]->memrange) + offset;
return 0;
}
if(tdfx_count > 1) {
tdfx_info[1] = (struct tdfx_softc*)devclass_get_softc(tdfx_devclass, 1);
if((offset & 0xff000000) == tdfx_info[1]->addr0) {
offset &= 0xffffff;
return atop(rman_get_start(tdfx_info[1]->memrange) + offset);
*paddr = rman_get_start(tdfx_info[1]->memrange) +
offset;
return 0;
}
}

8
sys/geom/geom_stats.c
View File

@ -122,15 +122,17 @@ static struct cdevsw geom_stats_cdevsw = {
};
static int
g_stat_mmap(dev_t dev, vm_offset_t offset, int nprot)
g_stat_mmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int nprot)
{
struct statspage *spp;
if (nprot != VM_PROT_READ)
return (-1);
TAILQ_FOREACH(spp, &pagelist, list) {
if (offset == 0)
return (vtophys(spp->stat) >> PAGE_SHIFT);
if (offset == 0) {
*paddr = vtophys(spp->stat);
return (0);
}
offset -= PAGE_SIZE;
}
return (-1);

5
sys/i386/i386/elan-mmcr.c
View File

@ -309,14 +309,15 @@ elan_write(dev_t dev, struct uio *uio, int ioflag)
}
static int
elan_mmap(dev_t dev, vm_offset_t offset, int nprot)
elan_mmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int nprot)
{
if (minor(dev) != ELAN_MMCR)
return (EOPNOTSUPP);
if (offset >= 0x1000)
return (-1);
return (i386_btop(0xfffef000));
*paddr = 0xfffef000;
return (0);
}
static int

9
sys/i386/i386/mem.c
View File

@ -215,22 +215,25 @@ mmrw(dev_t dev, struct uio *uio, int flags)
* instead of going through read/write *
\*******************************************************/
static int
memmmap(dev_t dev, vm_offset_t offset, int prot)
memmmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int prot)
{
switch (minor(dev))
{
/* minor device 0 is physical memory */
case 0:
return (i386_btop(offset));
*paddr = offset;
break;
/* minor device 1 is kernel memory */
case 1:
return (i386_btop(vtophys(offset)));
*paddr = vtophys(offset);
break;
default:
return (-1);
}
return (0);
}
/*

7
sys/i386/i386/pmap.c
View File

@ -3124,13 +3124,6 @@ pmap_page_protect(vm_page_t m, vm_prot_t prot)
}
}
vm_offset_t
pmap_phys_address(ppn)
int ppn;
{
return (i386_ptob(ppn));
}
/*
* pmap_ts_referenced:
*

5
sys/i386/isa/pcvt/pcvt_drv.c
View File

@ -420,11 +420,12 @@ pcvt_ioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
* driver mmap
*---------------------------------------------------------------------------*/
static int
pcvt_mmap(dev_t dev, vm_offset_t offset, int nprot)
pcvt_mmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int nprot)
{
if (offset > 0x20000 - PAGE_SIZE)
return -1;
return i386_btop((0xa0000 + offset));
*paddr = 0xa0000 + offset;
return 0;
}
/*---------------------------------------------------------------------------*

5
sys/i386/isa/spigot.c
View File

@ -273,7 +273,7 @@ struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[unit];
}
static int
spigot_mmap(dev_t dev, vm_offset_t offset, int nprot)
spigot_mmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int nprot)
{
struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[0];
@ -285,5 +285,6 @@ struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[0];
if(nprot & PROT_EXEC)
return -1;
return i386_btop(ss->maddr);
*paddr = ss->maddr;
return 0;
}

13
sys/i386/isa/vesa.c
View File

@ -1278,7 +1278,8 @@ vesa_blank_display(video_adapter_t *adp, int mode)
}
static int
vesa_mmap(video_adapter_t *adp, vm_offset_t offset, int prot)
vesa_mmap(video_adapter_t *adp, vm_offset_t offset, vm_offset_t *paddr,
int prot)
{
#if VESA_DEBUG > 0
printf("vesa_mmap(): window:0x%x, buffer:0x%x, offset:0x%x\n",
@ -1290,14 +1291,10 @@ vesa_mmap(video_adapter_t *adp, vm_offset_t offset, int prot)
/* XXX: is this correct? */
if (offset > adp->va_window_size - PAGE_SIZE)
return -1;
#ifdef __i386__
return i386_btop(adp->va_info.vi_buffer + offset);
#endif
#ifdef __alpha__ /* XXX */
return alpha_btop(adp->va_info.vi_buffer + offset);
#endif
*paddr = adp->va_info.vi_buffer + offset;
return 0;
} else {
return (*prevvidsw->mmap)(adp, offset, prot);
return (*prevvidsw->mmap)(adp, offset, paddr, prot);
}
}

5
sys/ia64/ia64/mem.c
View File

@ -221,7 +221,7 @@ mmrw(dev_t dev, struct uio *uio, int flags)
* instead of going through read/write *
\*******************************************************/
static int
memmmap(dev_t dev, vm_offset_t offset, int prot)
memmmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int prot)
{
/*
* /dev/mem is the only one that makes sense through this
@ -237,7 +237,8 @@ memmmap(dev_t dev, vm_offset_t offset, int prot)
*/
if ((prot & ia64_pa_access(atop((vm_offset_t)offset))) != prot)
return (-1);
return (ia64_btop(IA64_PHYS_TO_RR7(offset)));
*paddr = IA64_PHYS_TO_RR7(offset);
return (0);
}
static int

6
sys/ia64/ia64/pmap.c
View File

@ -2236,12 +2236,6 @@ pmap_page_protect(vm_page_t m, vm_prot_t prot)
}
}
vm_offset_t
pmap_phys_address(int ppn)
{
return (ia64_ptob(ppn));
}
/*
* pmap_ts_referenced:
*

4
sys/isa/vga_isa.c
View File

@ -196,9 +196,9 @@ isavga_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
}
static int
isavga_mmap(dev_t dev, vm_offset_t offset, int prot)
isavga_mmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int prot)
{
return vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, prot);
return vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, paddr, prot);
}
#endif /* FB_INSTALL_CDEV */

3
sys/kern/subr_xxx.c
View File

@ -132,9 +132,10 @@ nokqfilter(dev, kn)
}
int
nommap(dev, offset, nprot)
nommap(dev, offset, paddr, nprot)
dev_t dev;
vm_offset_t offset;
vm_offset_t *paddr;
int nprot;
{

4
sys/pc98/cbus/gdc.c
View File

@ -397,12 +397,12 @@ gdcioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
}
static int
gdcmmap(dev_t dev, vm_offset_t offset, int prot)
gdcmmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int prot)
{
gdc_softc_t *sc;
sc = GDC_SOFTC(GDC_UNIT(dev));
return genfbmmap(&sc->gensc, sc->adp, offset, prot);
return genfbmmap(&sc->gensc, sc->adp, offset, paddr, prot);
}
#endif /* FB_INSTALL_CDEV */

4
sys/pc98/pc98/pc98gdc.c
View File

@ -397,12 +397,12 @@ gdcioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
}
static int
gdcmmap(dev_t dev, vm_offset_t offset, int prot)
gdcmmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int prot)
{
gdc_softc_t *sc;
sc = GDC_SOFTC(GDC_UNIT(dev));
return genfbmmap(&sc->gensc, sc->adp, offset, prot);
return genfbmmap(&sc->gensc, sc->adp, offset, paddr, prot);
}
#endif /* FB_INSTALL_CDEV */

4
sys/pc98/pc98/syscons.c
View File

@ -3383,14 +3383,14 @@ scgetc(sc_softc_t *sc, u_int flags)
}
static int
scmmap(dev_t dev, vm_offset_t offset, int nprot)
scmmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int nprot)
{
scr_stat *scp;
scp = SC_STAT(dev);
if (scp != scp->sc->cur_scp)
return -1;
return (*vidsw[scp->sc->adapter]->mmap)(scp->sc->adp, offset, nprot);
return (*vidsw[scp->sc->adapter]->mmap)(scp->sc->adp, offset, paddr, nprot);
}
static int

5
sys/pci/agp.c
View File

@ -722,14 +722,15 @@ agp_ioctl(dev_t kdev, u_long cmd, caddr_t data, int fflag, struct thread *td)
}
static int
agp_mmap(dev_t kdev, vm_offset_t offset, int prot)
agp_mmap(dev_t kdev, vm_offset_t offset, vm_offset_t *paddr, int prot)
{
device_t dev = KDEV2DEV(kdev);
struct agp_softc *sc = device_get_softc(dev);
if (offset > AGP_GET_APERTURE(dev))
return -1;
return atop(rman_get_start(sc->as_aperture) + offset);
*paddr = rman_get_start(sc->as_aperture) + offset;
return 0;
}
/* Implementation of the kernel api */

5
sys/pci/meteor.c
View File

@ -2107,7 +2107,7 @@ meteor_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
}
int
meteor_mmap(dev_t dev, vm_offset_t offset, int nprot)
meteor_mmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int nprot)
{
int unit;
@ -2126,6 +2126,7 @@ meteor_mmap(dev_t dev, vm_offset_t offset, int nprot)
if(offset >= mtr->alloc_pages * PAGE_SIZE)
return -1;
return i386_btop(vtophys(mtr->bigbuf) + offset);
*paddr = vtophys(mtr->bigbuf) + offset;
return 0;
}
#endif

5
sys/pci/xrpu.c
View File

@ -136,12 +136,13 @@ xrpu_close(dev_t dev, int flag, int mode, struct thread *td)
}
static int
xrpu_mmap(dev_t dev, vm_offset_t offset, int nprot)
xrpu_mmap(dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int nprot)
{
struct softc *sc = dev->si_drv1;
if (offset >= 0x1000000)
return (-1);
return (i386_btop(sc->physbase + offset));
*paddr = sc->physbase + offset;
return (0);
}
static int

7
sys/powerpc/aim/mmu_oea.c
View File

@ -1452,13 +1452,6 @@ pmap_protect(pmap_t pm, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot)
}
}
vm_offset_t
pmap_phys_address(int ppn)
{
TODO;
return (0);
}
/*
* Map a list of wired pages into kernel virtual address space. This is
* intended for temporary mappings which do not need page modification or

7
sys/powerpc/powerpc/mmu_oea.c
View File

@ -1452,13 +1452,6 @@ pmap_protect(pmap_t pm, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot)
}
}
vm_offset_t
pmap_phys_address(int ppn)
{
TODO;
return (0);
}
/*
* Map a list of wired pages into kernel virtual address space. This is
* intended for temporary mappings which do not need page modification or

7
sys/powerpc/powerpc/pmap.c
View File

@ -1452,13 +1452,6 @@ pmap_protect(pmap_t pm, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot)
}
}
vm_offset_t
pmap_phys_address(int ppn)
{
TODO;
return (0);
}
/*
* Map a list of wired pages into kernel virtual address space. This is
* intended for temporary mappings which do not need page modification or

7
sys/sparc64/sparc64/pmap.c
View File

@ -1778,13 +1778,6 @@ pmap_page_protect(vm_page_t m, vm_prot_t prot)
}
}
vm_offset_t
pmap_phys_address(int ppn)
{
return (sparc64_ptob(ppn));
}
/*
* pmap_ts_referenced:
*

3
sys/sys/conf.h
View File

@ -157,7 +157,8 @@ typedef int d_read_t(dev_t dev, struct uio *uio, int ioflag);
typedef int d_write_t(dev_t dev, struct uio *uio, int ioflag);
typedef int d_poll_t(dev_t dev, int events, struct thread *td);
typedef int d_kqfilter_t(dev_t dev, struct knote *kn);
typedef int d_mmap_t(dev_t dev, vm_offset_t offset, int nprot);
typedef int d_mmap_t(dev_t dev, vm_offset_t offset, vm_offset_t *paddr,
int nprot);
typedef int l_open_t(dev_t dev, struct tty *tp);
typedef int l_close_t(struct tty *tp, int flag);

3
sys/sys/linedisc.h
View File

@ -157,7 +157,8 @@ typedef int d_read_t(dev_t dev, struct uio *uio, int ioflag);
typedef int d_write_t(dev_t dev, struct uio *uio, int ioflag);
typedef int d_poll_t(dev_t dev, int events, struct thread *td);
typedef int d_kqfilter_t(dev_t dev, struct knote *kn);
typedef int d_mmap_t(dev_t dev, vm_offset_t offset, int nprot);
typedef int d_mmap_t(dev_t dev, vm_offset_t offset, vm_offset_t *paddr,
int nprot);
typedef int l_open_t(dev_t dev, struct tty *tp);
typedef int l_close_t(struct tty *tp, int flag);

14
sys/vm/device_pager.c
View File

@ -107,7 +107,7 @@ dev_pager_alloc(void *handle, vm_ooffset_t size, vm_prot_t prot, vm_ooffset_t fo
d_mmap_t *mapfunc;
vm_object_t object;
unsigned int npages;
vm_offset_t off;
vm_offset_t off, paddr;
/*
* Offset should be page aligned.
@ -137,7 +137,7 @@ dev_pager_alloc(void *handle, vm_ooffset_t size, vm_prot_t prot, vm_ooffset_t fo
*/
npages = OFF_TO_IDX(size);
for (off = foff; npages--; off += PAGE_SIZE)
if ((*mapfunc)(dev, off, (int) prot) == -1) {
if ((*mapfunc)(dev, off, &paddr, (int)prot) != 0) {
mtx_unlock(&Giant);
return (NULL);
}
@ -205,7 +205,7 @@ dev_pager_getpages(object, m, count, reqpage)
vm_offset_t paddr;
vm_page_t page;
dev_t dev;
int i;
int i, ret;
d_mmap_t *mapfunc;
int prot;
@ -218,11 +218,11 @@ dev_pager_getpages(object, m, count, reqpage)
if (mapfunc == NULL || mapfunc == (d_mmap_t *)nullop)
panic("dev_pager_getpage: no map function");
paddr = pmap_phys_address((*mapfunc) (dev, (vm_offset_t) offset << PAGE_SHIFT, prot));
KASSERT(paddr != -1,("dev_pager_getpage: map function returns error"));
ret = (*mapfunc)(dev, (vm_offset_t)offset << PAGE_SHIFT, &paddr, prot);
KASSERT(ret == 0, ("dev_pager_getpage: map function returns error"));
/*
* Replace the passed in reqpage page with our own fake page and free up the
* all of the original pages.
* Replace the passed in reqpage page with our own fake page and
* free up the all of the original pages.
*/
page = dev_pager_getfake(paddr);
TAILQ_INSERT_TAIL(&object->un_pager.devp.devp_pglist, page, pageq);

1
sys/vm/pmap.h
View File

@ -119,7 +119,6 @@ void pmap_object_init_pt(pmap_t pmap, vm_offset_t addr,
int pagelimit);
boolean_t pmap_page_exists_quick(pmap_t pmap, vm_page_t m);
void pmap_page_protect(vm_page_t m, vm_prot_t prot);
vm_offset_t pmap_phys_address(int);
void pmap_pinit(pmap_t);
void pmap_pinit0(pmap_t);
void pmap_pinit2(pmap_t);