summaryrefslogtreecommitdiffstats
path: root/sys/dev/firewire/fwmem.c
diff options
context:
space:
mode:
Diffstat (limited to 'sys/dev/firewire/fwmem.c')
-rw-r--r--sys/dev/firewire/fwmem.c308
1 files changed, 308 insertions, 0 deletions
diff --git a/sys/dev/firewire/fwmem.c b/sys/dev/firewire/fwmem.c
new file mode 100644
index 0000000..509036f
--- /dev/null
+++ b/sys/dev/firewire/fwmem.c
@@ -0,0 +1,308 @@
+/*
+ * 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_low, 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();
+ 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_DEVBUF, 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_RREQQ;
+ 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;
+}
+
+int
+fwmem_open (dev_t dev, int flags, int fmt, fw_proc *td)
+{
+ int err = 0;
+ return err;
+}
+
+int
+fwmem_close (dev_t dev, int flags, int fmt, fw_proc *td)
+{
+ int err = 0;
+ return err;
+}
+
+#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, pad;
+ 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(sc->fc, fwmem_eui64);
+ if (fwdev == NULL) {
+ printf("fwmem: no such device ID:%08x%08x\n",
+ fwmem_eui64.hi, fwmem_eui64.lo);
+ 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,
+ 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 (err)
+ return err;
+ fw_xfer_free(xfer);
+ pad = 0;
+ }
+ return err;
+}
+int
+fwmem_write (dev_t dev, struct uio *uio, int ioflag)
+{
+ return EINVAL;
+}
+int
+fwmem_ioctl (dev_t dev, u_long cmd, caddr_t data, int flag, fw_proc *td)
+{
+ return EINVAL;
+}
+int
+fwmem_poll (dev_t dev, int events, fw_proc *td)
+{
+ return EINVAL;
+}
+int
+fwmem_mmap (dev_t dev, vm_offset_t offset, int nproto)
+{
+ return EINVAL;
+}
OpenPOWER on IntegriCloud