2 * Copyright (c) 2002-2003
3 * Hidetoshi Shimokawa. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
16 * This product includes software developed by Hidetoshi Shimokawa.
18 * 4. Neither the name of the author nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * $FreeBSD: src/sys/dev/firewire/fwmem.c,v 1.26 2004/01/05 14:21:18 simokawa Exp $
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/types.h>
41 #include <sys/kernel.h>
42 #include <sys/malloc.h>
45 #include <sys/sysctl.h>
46 #if defined(__DragonFly__) || __FreeBSD_version < 500000
52 #include <sys/signal.h>
54 #include <sys/fcntl.h>
55 #include <sys/thread2.h>
59 #include "firewirereg.h"
62 #include <dev/firewire/firewire.h>
63 #include <dev/firewire/firewirereg.h>
64 #include <dev/firewire/fwmem.h>
67 static int fwmem_speed=2, fwmem_debug=0;
68 static struct fw_eui64 fwmem_eui64;
69 SYSCTL_DECL(_hw_firewire);
70 SYSCTL_NODE(_hw_firewire, OID_AUTO, fwmem, CTLFLAG_RD, 0,
71 "FireWire Memory Access");
72 SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_hi, CTLFLAG_RW,
73 &fwmem_eui64.hi, 0, "Fwmem target EUI64 high");
74 SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_lo, CTLFLAG_RW,
75 &fwmem_eui64.lo, 0, "Fwmem target EUI64 low");
76 SYSCTL_INT(_hw_firewire_fwmem, OID_AUTO, speed, CTLFLAG_RW, &fwmem_speed, 0,
78 SYSCTL_INT(_debug, OID_AUTO, fwmem_debug, CTLFLAG_RW, &fwmem_debug, 0,
79 "Fwmem driver debug flag");
81 MALLOC_DEFINE(M_FWMEM, "fwmem", "fwmem/FireWire");
83 #define MAXLEN (512 << fwmem_speed)
90 static struct fw_xfer *
92 struct fw_device *fwdev,
101 xfer = fw_xfer_alloc(M_FWMEM);
105 xfer->fc = fwdev->fc;
106 xfer->send.hdr.mode.hdr.dst = FWLOCALBUS | fwdev->dst;
108 xfer->send.spd = fwdev->speed;
110 xfer->send.spd = min(spd, fwdev->speed);
111 xfer->act.hand = hand;
112 xfer->retry_req = fw_asybusy;
114 xfer->send.pay_len = slen;
115 xfer->recv.pay_len = rlen;
122 struct fw_device *fwdev,
128 void (*hand)(struct fw_xfer *))
130 struct fw_xfer *xfer;
133 xfer = fwmem_xfer_req(fwdev, (void *)sc, spd, 0, 4, hand);
138 fp = &xfer->send.hdr;
139 fp->mode.rreqq.tcode = FWTCODE_RREQQ;
140 fp->mode.rreqq.dest_hi = dst_hi;
141 fp->mode.rreqq.dest_lo = dst_lo;
143 xfer->send.payload = NULL;
144 xfer->recv.payload = (u_int32_t *)data;
147 kprintf("fwmem_read_quad: %d %04x:%08x\n", fwdev->dst,
150 if (fw_asyreq(xfer->fc, -1, xfer) == 0)
159 struct fw_device *fwdev,
165 void (*hand)(struct fw_xfer *))
167 struct fw_xfer *xfer;
170 xfer = fwmem_xfer_req(fwdev, sc, spd, 0, 0, hand);
174 fp = &xfer->send.hdr;
175 fp->mode.wreqq.tcode = FWTCODE_WREQQ;
176 fp->mode.wreqq.dest_hi = dst_hi;
177 fp->mode.wreqq.dest_lo = dst_lo;
178 fp->mode.wreqq.data = *(u_int32_t *)data;
180 xfer->send.payload = xfer->recv.payload = NULL;
183 kprintf("fwmem_write_quad: %d %04x:%08x %08x\n", fwdev->dst,
184 dst_hi, dst_lo, *(u_int32_t *)data);
186 if (fw_asyreq(xfer->fc, -1, xfer) == 0)
195 struct fw_device *fwdev,
202 void (*hand)(struct fw_xfer *))
204 struct fw_xfer *xfer;
207 xfer = fwmem_xfer_req(fwdev, sc, spd, 0, roundup2(len, 4), hand);
211 fp = &xfer->send.hdr;
212 fp->mode.rreqb.tcode = FWTCODE_RREQB;
213 fp->mode.rreqb.dest_hi = dst_hi;
214 fp->mode.rreqb.dest_lo = dst_lo;
215 fp->mode.rreqb.len = len;
216 fp->mode.rreqb.extcode = 0;
218 xfer->send.payload = NULL;
219 xfer->recv.payload = data;
222 kprintf("fwmem_read_block: %d %04x:%08x %d\n", fwdev->dst,
223 dst_hi, dst_lo, len);
224 if (fw_asyreq(xfer->fc, -1, xfer) == 0)
233 struct fw_device *fwdev,
240 void (*hand)(struct fw_xfer *))
242 struct fw_xfer *xfer;
245 xfer = fwmem_xfer_req(fwdev, sc, spd, len, 0, hand);
249 fp = &xfer->send.hdr;
250 fp->mode.wreqb.tcode = FWTCODE_WREQB;
251 fp->mode.wreqb.dest_hi = dst_hi;
252 fp->mode.wreqb.dest_lo = dst_lo;
253 fp->mode.wreqb.len = len;
254 fp->mode.wreqb.extcode = 0;
256 xfer->send.payload = data;
257 xfer->recv.payload = NULL;
260 kprintf("fwmem_write_block: %d %04x:%08x %d\n", fwdev->dst,
261 dst_hi, dst_lo, len);
262 if (fw_asyreq(xfer->fc, -1, xfer) == 0)
271 fwmem_open (struct dev_open_args *ap)
273 cdev_t dev = ap->a_head.a_dev;
274 struct fwmem_softc *fms;
276 if (dev->si_drv1 != NULL) {
277 if ((ap->a_oflags & FWRITE) != 0)
279 fms = (struct fwmem_softc *)dev->si_drv1;
282 fms = (struct fwmem_softc *)kmalloc(sizeof(struct fwmem_softc),
284 bcopy(&fwmem_eui64, &fms->eui, sizeof(struct fw_eui64));
285 dev->si_drv1 = (void *)fms;
286 dev->si_iosize_max = DFLTPHYS;
290 kprintf("%s: refcount=%d\n", __func__, fms->refcount);
296 fwmem_close (struct dev_close_args *ap)
298 cdev_t dev = ap->a_head.a_dev;
299 struct fwmem_softc *fms;
301 fms = (struct fwmem_softc *)dev->si_drv1;
304 kprintf("%s: refcount=%d\n", __func__, fms->refcount);
305 if (fms->refcount < 1) {
306 kfree(dev->si_drv1, M_FW);
315 fwmem_biodone(struct fw_xfer *xfer)
320 bio = (struct bio *)xfer->sc;
322 bp->b_error = xfer->resp;
324 if (bp->b_error != 0) {
326 kprintf("%s: err=%d\n", __func__, bp->b_error);
327 bp->b_flags |= B_ERROR;
328 bp->b_resid = bp->b_bcount;
335 fwmem_strategy(struct dev_strategy_args *ap)
337 cdev_t dev = ap->a_head.a_dev;
338 struct bio *bio = ap->a_bio;
339 struct buf *bp = bio->bio_buf;
340 struct firewire_softc *sc;
341 struct fwmem_softc *fms;
342 struct fw_device *fwdev;
343 struct fw_xfer *xfer;
344 int unit, err=0, iolen;
346 /* XXX check request length */
348 unit = DEV2UNIT(dev);
349 sc = devclass_get_softc(firewire_devclass, unit);
352 fms = (struct fwmem_softc *)dev->si_drv1;
353 fwdev = fw_noderesolve_eui64(sc->fc, &fms->eui);
356 kprintf("fwmem: no such device ID:%08x%08x\n",
357 fms->eui.hi, fms->eui.lo);
361 if (bio->bio_offset == NOOFFSET) {
362 kprintf("fwmem: offset was not set bp %p\n", bp);
367 iolen = MIN(bp->b_bcount, MAXLEN);
368 if (bp->b_cmd == BUF_CMD_READ) {
369 if (iolen == 4 && (bio->bio_offset & 3) == 0)
370 xfer = fwmem_read_quad(fwdev,
371 (void *) bio, fwmem_speed,
372 bio->bio_offset >> 32, bio->bio_offset & 0xffffffff,
373 bp->b_data, fwmem_biodone);
375 xfer = fwmem_read_block(fwdev,
376 (void *) bio, fwmem_speed,
377 bio->bio_offset >> 32, bio->bio_offset & 0xffffffff,
378 iolen, bp->b_data, fwmem_biodone);
380 if (iolen == 4 && (bio->bio_offset & 3) == 0)
381 xfer = fwmem_write_quad(fwdev,
382 (void *)bio, fwmem_speed,
383 bio->bio_offset >> 32, bio->bio_offset & 0xffffffff,
384 bp->b_data, fwmem_biodone);
386 xfer = fwmem_write_block(fwdev,
387 (void *)bio, fwmem_speed,
388 bio->bio_offset >> 32, bio->bio_offset & 0xffffffff,
389 iolen, bp->b_data, fwmem_biodone);
396 bp->b_resid = bp->b_bcount - iolen;
401 kprintf("%s: err=%d\n", __func__, err);
403 bp->b_flags |= B_ERROR;
404 bp->b_resid = bp->b_bcount;
411 fwmem_ioctl(struct dev_ioctl_args *ap)
413 cdev_t dev = ap->a_head.a_dev;
414 struct fwmem_softc *fms;
417 fms = (struct fwmem_softc *)dev->si_drv1;
420 bcopy(ap->a_data, &fms->eui, sizeof(struct fw_eui64));
423 bcopy(&fms->eui, ap->a_data, sizeof(struct fw_eui64));
431 fwmem_poll(struct dev_poll_args *ap)
436 fwmem_mmap(struct dev_mmap_args *ap)