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07159f9c56
freebsd-skq/sys/dev/firewire/fwmem.c
Maxime Henrion 07159f9c56 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) 2002
* Hidetoshi Shimokawa. All rights reserved.
*
* 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 by Hidetoshi Shimokawa.
*
* 4. Neither the name of the author nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/types.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/conf.h>
#include <sys/uio.h>
#include <sys/sysctl.h>
#include <sys/bus.h>
#include <sys/signal.h>
#include <sys/mman.h>
#include <sys/ioccom.h>
#include <dev/firewire/firewire.h>
#include <dev/firewire/firewirereg.h>
#include <dev/firewire/fwmem.h>
static int fwmem_speed=2, fwmem_debug=0;
static struct fw_eui64 fwmem_eui64;
SYSCTL_DECL(_hw_firewire);
SYSCTL_NODE(_hw_firewire, OID_AUTO, fwmem, CTLFLAG_RD, 0,
"FireWire Memory Access");
SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_hi, CTLFLAG_RW,
&fwmem_eui64.hi, 0, "Fwmem target EUI64 high");
SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_lo, CTLFLAG_RW,
&fwmem_eui64.lo, 0, "Fwmem target EUI64 low");
SYSCTL_INT(_hw_firewire_fwmem, OID_AUTO, speed, CTLFLAG_RW, &fwmem_speed, 0,
"Fwmem link speed");
SYSCTL_INT(_debug, OID_AUTO, fwmem_debug, CTLFLAG_RW, &fwmem_debug, 0,
"Fwmem driver debug flag");
static struct fw_xfer *fwmem_xfer_req(struct fw_device *, caddr_t,
int, int, void *);
static struct fw_xfer *
fwmem_xfer_req(
struct fw_device *fwdev,
caddr_t sc,
int spd,
int len,
void *hand)
{
struct fw_xfer *xfer;
xfer = fw_xfer_alloc(M_FWXFER);
if (xfer == NULL)
return NULL;
xfer->fc = fwdev->fc;
xfer->dst = FWLOCALBUS | fwdev->dst;
if (spd < 0)
xfer->spd = fwdev->speed;
else
xfer->spd = min(spd, fwdev->speed);
xfer->send.len = len;
xfer->send.buf = malloc(len, M_FW, M_NOWAIT | M_ZERO);
if (xfer->send.buf == NULL) {
fw_xfer_free(xfer);
return NULL;
}
xfer->send.off = 0;
xfer->act.hand = hand;
xfer->retry_req = fw_asybusy;
xfer->sc = sc;
return xfer;
}
struct fw_xfer *
fwmem_read_quad(
struct fw_device *fwdev,
caddr_t sc,
u_int8_t spd,
u_int16_t dst_hi,
u_int32_t dst_lo,
void (*hand)(struct fw_xfer *))
{
struct fw_xfer *xfer;
struct fw_pkt *fp;
xfer = fwmem_xfer_req(fwdev, sc, spd, 12, hand);
if (xfer == NULL)
return NULL;
fp = (struct fw_pkt *)xfer->send.buf;
fp->mode.rreqq.tcode = FWTCODE_RREQQ;
fp->mode.rreqq.dst = htons(xfer->dst);
fp->mode.rreqq.dest_hi = htons(dst_hi);
fp->mode.rreqq.dest_lo = htonl(dst_lo);
if (fwmem_debug)
printf("fwmem_read_quad: %d %04x:%08x\n", fwdev->dst,
dst_hi, dst_lo);
if (fw_asyreq(xfer->fc, -1, xfer) == 0)
return xfer;
fw_xfer_free(xfer);
return NULL;
}
struct fw_xfer *
fwmem_write_quad(
struct fw_device *fwdev,
caddr_t sc,
u_int8_t spd,
u_int16_t dst_hi,
u_int32_t dst_lo,
u_int32_t data,
void (*hand)(struct fw_xfer *))
{
struct fw_xfer *xfer;
struct fw_pkt *fp;
xfer = fwmem_xfer_req(fwdev, sc, spd, 16, hand);
if (xfer == NULL)
return NULL;
fp = (struct fw_pkt *)xfer->send.buf;
fp->mode.wreqq.tcode = FWTCODE_WREQQ;
fp->mode.wreqq.dst = htons(xfer->dst);
fp->mode.wreqq.dest_hi = htons(dst_hi);
fp->mode.wreqq.dest_lo = htonl(dst_lo);
fp->mode.wreqq.data = htonl(data);
if (fwmem_debug)
printf("fwmem_write_quad: %d %04x:%08x %08x\n", fwdev->dst,
dst_hi, dst_lo, data);
if (fw_asyreq(xfer->fc, -1, xfer) == 0)
return xfer;
fw_xfer_free(xfer);
return NULL;
}
struct fw_xfer *
fwmem_read_block(
struct fw_device *fwdev,
caddr_t sc,
u_int8_t spd,
u_int16_t dst_hi,
u_int32_t dst_lo,
int len,
void (*hand)(struct fw_xfer *))
{
struct fw_xfer *xfer;
struct fw_pkt *fp;
xfer = fwmem_xfer_req(fwdev, sc, spd, 16, hand);
if (xfer == NULL)
return NULL;
fp = (struct fw_pkt *)xfer->send.buf;
fp->mode.rreqb.tcode = FWTCODE_RREQB;
fp->mode.rreqb.dst = htons(xfer->dst);
fp->mode.rreqb.dest_hi = htons(dst_hi);
fp->mode.rreqb.dest_lo = htonl(dst_lo);
fp->mode.rreqb.len = htons(len);
if (fwmem_debug)
printf("fwmem_read_block: %d %04x:%08x %d\n", fwdev->dst,
dst_hi, dst_lo, len);
if (fw_asyreq(xfer->fc, -1, xfer) == 0)
return xfer;
fw_xfer_free(xfer);
return NULL;
}
struct fw_xfer *
fwmem_write_block(
struct fw_device *fwdev,
caddr_t sc,
u_int8_t spd,
u_int16_t dst_hi,
u_int32_t dst_lo,
int len,
char *data,
void (*hand)(struct fw_xfer *))
{
struct fw_xfer *xfer;
struct fw_pkt *fp;
xfer = fwmem_xfer_req(fwdev, sc, spd, 16 + roundup(len, 4), hand);
if (xfer == NULL)
return NULL;
fp = (struct fw_pkt *)xfer->send.buf;
fp->mode.wreqb.tcode = FWTCODE_WREQB;
fp->mode.wreqb.dst = htons(xfer->dst);
fp->mode.wreqb.dest_hi = htons(dst_hi);
fp->mode.wreqb.dest_lo = htonl(dst_lo);
fp->mode.wreqb.len = htons(len);
bcopy(data, &fp->mode.wreqb.payload[0], len);
if (fwmem_debug)
printf("fwmem_write_block: %d %04x:%08x %d\n", fwdev->dst,
dst_hi, dst_lo, len);
if (fw_asyreq(xfer->fc, -1, xfer) == 0)
return xfer;
fw_xfer_free(xfer);
return NULL;
}
int
fwmem_open (dev_t dev, int flags, int fmt, fw_proc *td)
{
struct fw_eui64 *eui;
eui = (struct fw_eui64 *)malloc(sizeof(struct fw_eui64), M_FW, 0);
if (eui == NULL)
return ENOMEM;
bcopy(&fwmem_eui64, eui, sizeof(struct fw_eui64));
dev->si_drv1 = (void *)eui;
return (0);
}
int
fwmem_close (dev_t dev, int flags, int fmt, fw_proc *td)
{
free(dev->si_drv1, M_FW);
return (0);
}
#define MAXLEN 2048
#define USE_QUAD 0
int
fwmem_read (dev_t dev, struct uio *uio, int ioflag)
{
struct firewire_softc *sc;
struct fw_device *fwdev;
struct fw_xfer *xfer;
int err = 0;
int unit = DEV2UNIT(dev);
u_int16_t dst_hi;
u_int32_t dst_lo;
off_t offset;
int len;
sc = devclass_get_softc(firewire_devclass, unit);
fwdev = fw_noderesolve_eui64(sc->fc, (struct fw_eui64 *)dev->si_drv1);
if (fwdev == NULL) {
if (fwmem_debug)
printf("fwmem: no such device ID:%08x%08x\n",
fwmem_eui64.hi, fwmem_eui64.lo);
return EINVAL;
}
while(uio->uio_resid > 0 && !err) {
offset = uio->uio_offset;
dst_hi = (offset >> 32) & 0xffff;
dst_lo = offset & 0xffffffff;
len = uio->uio_resid;
if (len == 4 && (dst_lo & 3) == 0) {
xfer = fwmem_read_quad(fwdev, NULL, fwmem_speed,
dst_hi, dst_lo, fw_asy_callback);
if (xfer == NULL) {
err = EINVAL;
break;
}
err = tsleep((caddr_t)xfer, FWPRI, "fwmrq", hz);
if (err !=0 || xfer->resp != 0
|| xfer->recv.buf == NULL)
err = EIO;
else
err = uiomove(xfer->recv.buf
+ xfer->recv.off + 4*3, 4, uio);
} else {
if (len > MAXLEN)
len = MAXLEN;
xfer = fwmem_read_block(fwdev, NULL, fwmem_speed,
dst_hi, dst_lo, len, fw_asy_callback);
if (xfer == NULL) {
err = EINVAL;
break;
}
err = tsleep((caddr_t)xfer, FWPRI, "fwmrb", hz);
if (err != 0 || xfer->resp != 0
|| xfer->recv.buf == NULL)
err = EIO;
else
err = uiomove(xfer->recv.buf
+ xfer->recv.off + 4*4, len, uio);
}
fw_xfer_free(xfer);
}
return err;
}
int
fwmem_write (dev_t dev, struct uio *uio, int ioflag)
{
struct firewire_softc *sc;
struct fw_device *fwdev;
struct fw_xfer *xfer;
int err = 0;
int unit = DEV2UNIT(dev);
u_int16_t dst_hi;
u_int32_t dst_lo, quad;
char *data;
off_t offset;
int len;
sc = devclass_get_softc(firewire_devclass, unit);
fwdev = fw_noderesolve_eui64(sc->fc, (struct fw_eui64 *)dev->si_drv1);
if (fwdev == NULL) {
if (fwmem_debug)
printf("fwmem: no such device ID:%08x%08x\n",
fwmem_eui64.hi, fwmem_eui64.lo);
return EINVAL;
}
data = malloc(MAXLEN, M_FW, 0);
if (data == NULL)
return ENOMEM;
while(uio->uio_resid > 0 && !err) {
offset = uio->uio_offset;
dst_hi = (offset >> 32) & 0xffff;
dst_lo = offset & 0xffffffff;
len = uio->uio_resid;
if (len == 4 && (dst_lo & 3) == 0) {
err = uiomove((char *)&quad, sizeof(quad), uio);
xfer = fwmem_write_quad(fwdev, NULL, fwmem_speed,
dst_hi, dst_lo, quad, fw_asy_callback);
if (xfer == NULL) {
err = EINVAL;
break;
}
err = tsleep((caddr_t)xfer, FWPRI, "fwmwq", hz);
if (err !=0 || xfer->resp != 0)
err = EIO;
} else {
if (len > MAXLEN)
len = MAXLEN;
err = uiomove(data, len, uio);
if (err)
break;
xfer = fwmem_write_block(fwdev, NULL, fwmem_speed,
dst_hi, dst_lo, len, data, fw_asy_callback);
if (xfer == NULL) {
err = EINVAL;
break;
}
err = tsleep((caddr_t)xfer, FWPRI, "fwmwb", hz);
if (err != 0 || xfer->resp != 0)
err = EIO;
}
fw_xfer_free(xfer);
}
free(data, M_FW);
return err;
}
int
fwmem_ioctl (dev_t dev, u_long cmd, caddr_t data, int flag, fw_proc *td)
{
int err = 0;
switch (cmd) {
case FW_SDEUI64:
bcopy(data, dev->si_drv1, sizeof(struct fw_eui64));
break;
case FW_GDEUI64:
bcopy(dev->si_drv1, data, sizeof(struct fw_eui64));
break;
default:
err = EINVAL;
}
return(err);
}
int
fwmem_poll (dev_t dev, int events, fw_proc *td)
{
return EINVAL;
}
int
fwmem_mmap (dev_t dev, vm_offset_t offset, vm_offset_t *paddr, int nproto)
{
return EINVAL;
}
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