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Code Issues Releases Activity

- Implement write part.

Browse Source 
- Use quad access for aligned 4 byte access.
This commit is contained in:
Hidetoshi Shimokawa 2003-02-04 17:09:59 +00:00
parent a487c0f261
commit 8a45d99b2a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=110337
2 changed files with 122 additions and 30 deletions
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150
sys/dev/firewire/fwmem.c
View File

@ -210,6 +210,43 @@ fwmem_read_block(
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_RREQB;
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)
{
@ -232,7 +269,7 @@ 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, pad;
int err = 0;
int unit = DEV2UNIT(dev);
u_int16_t dst_hi;
u_int32_t dst_lo;
@ -247,50 +284,103 @@ fwmem_read (dev_t dev, struct uio *uio, int ioflag)
return EINVAL;
}
pad = uio->uio_offset % 4;
if (fwmem_debug && pad != 0)
printf("unaligned\n");
while(uio->uio_resid > 0) {
offset = uio->uio_offset;
offset -= pad;
dst_hi = (offset >> 32) & 0xffff;
dst_lo = offset & 0xffffffff;
#if USE_QUAD
xfer = fwmem_read_quad(fwdev, NULL, fwmem_speed,
dst_hi, dst_lo, fw_asy_callback);
if (xfer == NULL)
return EINVAL;
err = tsleep((caddr_t)xfer, FWPRI, "fwmem", hz);
if (err !=0 || xfer->resp != 0 || xfer->recv.buf == NULL)
return EINVAL; /* XXX */
err = uiomove(xfer->recv.buf + xfer->recv.off + 4*3 + pad,
4 - pad, uio);
#else
len = uio->uio_resid;
if (len > MAXLEN)
len = MAXLEN;
xfer = fwmem_read_block(fwdev, NULL, fwmem_speed,
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)
return EINVAL;
err = tsleep((caddr_t)xfer, FWPRI, "fwmrq", hz);
if (err !=0 || xfer->resp != 0
|| xfer->recv.buf == NULL)
return EINVAL; /* XXX */
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)
return EINVAL;
err = tsleep((caddr_t)xfer, FWPRI, "fwmem", hz);
if (err != 0 || xfer->resp != 0 || xfer->recv.buf == NULL)
return EINVAL; /* XXX */
err = uiomove(xfer->recv.buf + xfer->recv.off + 4*4 + pad,
len - pad, uio);
#endif
if (xfer == NULL)
return EINVAL;
err = tsleep((caddr_t)xfer, FWPRI, "fwmrb", hz);
if (err != 0 || xfer->resp != 0
|| xfer->recv.buf == NULL)
return EINVAL; /* XXX */
err = uiomove(xfer->recv.buf + xfer->recv.off + 4*4,
len, uio);
}
fw_xfer_free(xfer);
if (err)
return err;
fw_xfer_free(xfer);
pad = 0;
}
return err;
}
int
fwmem_write (dev_t dev, struct uio *uio, int ioflag)
{
return EINVAL;
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, fwmem_eui64);
if (fwdev == NULL) {
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) {
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)
return EINVAL;
err = tsleep((caddr_t)xfer, FWPRI, "fwmwq", hz);
if (err !=0 || xfer->resp != 0
|| xfer->recv.buf == NULL)
return EINVAL; /* XXX */
} else {
if (len > MAXLEN)
len = MAXLEN;
err = uiomove(data, len, uio);
if (err)
return err;
xfer = fwmem_write_block(fwdev, NULL, fwmem_speed,
dst_hi, dst_lo, len, data, fw_asy_callback);
if (xfer == NULL)
return EINVAL;
err = tsleep((caddr_t)xfer, FWPRI, "fwmwb", hz);
if (err != 0 || xfer->resp != 0
|| xfer->recv.buf == NULL)
return EINVAL; /* XXX */
fw_xfer_free(xfer);
}
}
return err;
}
int
fwmem_ioctl (dev_t dev, u_long cmd, caddr_t data, int flag, fw_proc *td)
{

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

@ -40,6 +40,8 @@ struct fw_xfer *fwmem_write_quad(struct fw_device *, caddr_t, u_int8_t,
u_int16_t, u_int32_t, u_int32_t, void (*)(struct fw_xfer *));
struct fw_xfer *fwmem_read_block(struct fw_device *, caddr_t, u_int8_t,
u_int16_t, u_int32_t, int, void (*)(struct fw_xfer *));
struct fw_xfer *fwmem_write_block(struct fw_device *, caddr_t, u_int8_t,
u_int16_t, u_int32_t, int, char *, void (*)(struct fw_xfer *));
d_open_t fwmem_open;
d_close_t fwmem_close;