431 lines
10 KiB
C
431 lines
10 KiB
C
/*
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* Copyright (c) 2002-2003
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* Hidetoshi Shimokawa. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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*
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* This product includes software developed by Hidetoshi Shimokawa.
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*
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* 4. Neither the name of the author nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/conf.h>
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#include <sys/sysctl.h>
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#if __FreeBSD_version < 500000
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#include <sys/buf.h>
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#else
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#include <sys/bio.h>
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#endif
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/signal.h>
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#include <sys/mman.h>
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#include <sys/ioccom.h>
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#include <sys/fcntl.h>
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#include <dev/firewire/firewire.h>
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#include <dev/firewire/firewirereg.h>
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#include <dev/firewire/fwmem.h>
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static int fwmem_speed=2, fwmem_debug=0;
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static struct fw_eui64 fwmem_eui64;
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SYSCTL_DECL(_hw_firewire);
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SYSCTL_NODE(_hw_firewire, OID_AUTO, fwmem, CTLFLAG_RD, 0,
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"FireWire Memory Access");
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SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_hi, CTLFLAG_RW,
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&fwmem_eui64.hi, 0, "Fwmem target EUI64 high");
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SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_lo, CTLFLAG_RW,
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&fwmem_eui64.lo, 0, "Fwmem target EUI64 low");
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SYSCTL_INT(_hw_firewire_fwmem, OID_AUTO, speed, CTLFLAG_RW, &fwmem_speed, 0,
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"Fwmem link speed");
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SYSCTL_INT(_debug, OID_AUTO, fwmem_debug, CTLFLAG_RW, &fwmem_debug, 0,
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"Fwmem driver debug flag");
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#define MAXLEN (512 << fwmem_speed)
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struct fwmem_softc {
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struct fw_eui64 eui;
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int refcount;
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};
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static struct fw_xfer *
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fwmem_xfer_req(
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struct fw_device *fwdev,
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caddr_t sc,
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int spd,
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int slen,
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int rlen,
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void *hand)
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{
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struct fw_xfer *xfer;
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xfer = fw_xfer_alloc(M_FWXFER);
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if (xfer == NULL)
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return NULL;
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xfer->fc = fwdev->fc;
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xfer->send.hdr.mode.hdr.dst = FWLOCALBUS | fwdev->dst;
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if (spd < 0)
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xfer->send.spd = fwdev->speed;
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else
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xfer->send.spd = min(spd, fwdev->speed);
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xfer->act.hand = hand;
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xfer->retry_req = fw_asybusy;
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xfer->sc = sc;
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xfer->send.pay_len = slen;
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xfer->recv.pay_len = rlen;
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return xfer;
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}
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struct fw_xfer *
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fwmem_read_quad(
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struct fw_device *fwdev,
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caddr_t sc,
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u_int8_t spd,
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u_int16_t dst_hi,
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u_int32_t dst_lo,
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void *data,
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void (*hand)(struct fw_xfer *))
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{
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struct fw_xfer *xfer;
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struct fw_pkt *fp;
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xfer = fwmem_xfer_req(fwdev, (void *)sc, spd, 0, 4, hand);
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if (xfer == NULL) {
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return NULL;
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}
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fp = &xfer->send.hdr;
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fp->mode.rreqq.tcode = FWTCODE_RREQQ;
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fp->mode.rreqq.dest_hi = dst_hi;
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fp->mode.rreqq.dest_lo = dst_lo;
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xfer->send.payload = NULL;
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xfer->recv.payload = (u_int32_t *)data;
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if (fwmem_debug)
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printf("fwmem_read_quad: %d %04x:%08x\n", fwdev->dst,
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dst_hi, dst_lo);
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if (fw_asyreq(xfer->fc, -1, xfer) == 0)
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return xfer;
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fw_xfer_free(xfer);
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return NULL;
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}
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struct fw_xfer *
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fwmem_write_quad(
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struct fw_device *fwdev,
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caddr_t sc,
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u_int8_t spd,
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u_int16_t dst_hi,
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u_int32_t dst_lo,
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void *data,
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void (*hand)(struct fw_xfer *))
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{
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struct fw_xfer *xfer;
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struct fw_pkt *fp;
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xfer = fwmem_xfer_req(fwdev, sc, spd, 0, 0, hand);
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if (xfer == NULL)
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return NULL;
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fp = &xfer->send.hdr;
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fp->mode.wreqq.tcode = FWTCODE_WREQQ;
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fp->mode.wreqq.dest_hi = dst_hi;
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fp->mode.wreqq.dest_lo = dst_lo;
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fp->mode.wreqq.data = *(u_int32_t *)data;
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xfer->send.payload = xfer->recv.payload = NULL;
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if (fwmem_debug)
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printf("fwmem_write_quad: %d %04x:%08x %08x\n", fwdev->dst,
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dst_hi, dst_lo, *(u_int32_t *)data);
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if (fw_asyreq(xfer->fc, -1, xfer) == 0)
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return xfer;
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fw_xfer_free(xfer);
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return NULL;
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}
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struct fw_xfer *
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fwmem_read_block(
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struct fw_device *fwdev,
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caddr_t sc,
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u_int8_t spd,
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u_int16_t dst_hi,
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u_int32_t dst_lo,
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int len,
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void *data,
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void (*hand)(struct fw_xfer *))
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{
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struct fw_xfer *xfer;
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struct fw_pkt *fp;
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xfer = fwmem_xfer_req(fwdev, sc, spd, 0, roundup2(len, 4), hand);
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if (xfer == NULL)
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return NULL;
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fp = &xfer->send.hdr;
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fp->mode.rreqb.tcode = FWTCODE_RREQB;
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fp->mode.rreqb.dest_hi = dst_hi;
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fp->mode.rreqb.dest_lo = dst_lo;
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fp->mode.rreqb.len = len;
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fp->mode.rreqb.extcode = 0;
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xfer->send.payload = NULL;
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xfer->recv.payload = data;
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if (fwmem_debug)
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printf("fwmem_read_block: %d %04x:%08x %d\n", fwdev->dst,
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dst_hi, dst_lo, len);
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if (fw_asyreq(xfer->fc, -1, xfer) == 0)
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return xfer;
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fw_xfer_free(xfer);
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return NULL;
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}
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struct fw_xfer *
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fwmem_write_block(
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struct fw_device *fwdev,
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caddr_t sc,
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u_int8_t spd,
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u_int16_t dst_hi,
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u_int32_t dst_lo,
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int len,
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void *data,
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void (*hand)(struct fw_xfer *))
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{
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struct fw_xfer *xfer;
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struct fw_pkt *fp;
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xfer = fwmem_xfer_req(fwdev, sc, spd, len, 0, hand);
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if (xfer == NULL)
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return NULL;
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fp = &xfer->send.hdr;
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fp->mode.wreqb.tcode = FWTCODE_WREQB;
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fp->mode.wreqb.dest_hi = dst_hi;
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fp->mode.wreqb.dest_lo = dst_lo;
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fp->mode.wreqb.len = len;
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fp->mode.wreqb.extcode = 0;
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xfer->send.payload = data;
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xfer->recv.payload = NULL;
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if (fwmem_debug)
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printf("fwmem_write_block: %d %04x:%08x %d\n", fwdev->dst,
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dst_hi, dst_lo, len);
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if (fw_asyreq(xfer->fc, -1, xfer) == 0)
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return xfer;
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fw_xfer_free(xfer);
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return NULL;
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}
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int
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fwmem_open (dev_t dev, int flags, int fmt, fw_proc *td)
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{
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struct fwmem_softc *fms;
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if (dev->si_drv1 != NULL) {
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if ((flags & FWRITE) != 0)
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return (EBUSY);
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fms = (struct fwmem_softc *)dev->si_drv1;
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fms->refcount ++;
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} else {
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fms = (struct fwmem_softc *)malloc(sizeof(struct fwmem_softc),
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M_FW, M_WAITOK);
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if (fms == NULL)
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return ENOMEM;
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bcopy(&fwmem_eui64, &fms->eui, sizeof(struct fw_eui64));
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dev->si_drv1 = (void *)fms;
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dev->si_iosize_max = DFLTPHYS;
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fms->refcount = 1;
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}
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if (fwmem_debug)
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printf("%s: refcount=%d\n", __FUNCTION__, fms->refcount);
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return (0);
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}
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int
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fwmem_close (dev_t dev, int flags, int fmt, fw_proc *td)
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{
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struct fwmem_softc *fms;
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fms = (struct fwmem_softc *)dev->si_drv1;
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fms->refcount --;
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if (fwmem_debug)
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printf("%s: refcount=%d\n", __FUNCTION__, fms->refcount);
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if (fms->refcount < 1) {
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free(dev->si_drv1, M_FW);
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dev->si_drv1 = NULL;
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}
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return (0);
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}
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static void
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fwmem_biodone(struct fw_xfer *xfer)
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{
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struct bio *bp;
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bp = (struct bio *)xfer->sc;
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bp->bio_error = xfer->resp;
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if (bp->bio_error != 0) {
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if (fwmem_debug)
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printf("%s: err=%d\n", __FUNCTION__, bp->bio_error);
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bp->bio_flags |= BIO_ERROR;
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bp->bio_resid = bp->bio_bcount;
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}
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fw_xfer_free(xfer);
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biodone(bp);
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}
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void
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fwmem_strategy(struct bio *bp)
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{
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struct firewire_softc *sc;
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struct fwmem_softc *fms;
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struct fw_device *fwdev;
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struct fw_xfer *xfer;
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dev_t dev;
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int unit, err=0, s, iolen;
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dev = bp->bio_dev;
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/* XXX check request length */
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unit = DEV2UNIT(dev);
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sc = devclass_get_softc(firewire_devclass, unit);
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s = splfw();
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fms = (struct fwmem_softc *)dev->si_drv1;
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fwdev = fw_noderesolve_eui64(sc->fc, &fms->eui);
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if (fwdev == NULL) {
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if (fwmem_debug)
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printf("fwmem: no such device ID:%08x%08x\n",
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fms->eui.hi, fms->eui.lo);
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err = EINVAL;
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goto error;
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}
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iolen = MIN(bp->bio_bcount, MAXLEN);
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if ((bp->bio_cmd & BIO_READ) == BIO_READ) {
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if (iolen == 4 && (bp->bio_offset & 3) == 0)
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xfer = fwmem_read_quad(fwdev,
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(void *) bp, fwmem_speed,
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bp->bio_offset >> 32, bp->bio_offset & 0xffffffff,
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bp->bio_data, fwmem_biodone);
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else
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xfer = fwmem_read_block(fwdev,
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(void *) bp, fwmem_speed,
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bp->bio_offset >> 32, bp->bio_offset & 0xffffffff,
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iolen, bp->bio_data, fwmem_biodone);
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} else {
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if (iolen == 4 && (bp->bio_offset & 3) == 0)
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xfer = fwmem_write_quad(fwdev,
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(void *)bp, fwmem_speed,
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bp->bio_offset >> 32, bp->bio_offset & 0xffffffff,
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bp->bio_data, fwmem_biodone);
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else
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xfer = fwmem_write_block(fwdev,
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(void *)bp, fwmem_speed,
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bp->bio_offset >> 32, bp->bio_offset & 0xffffffff,
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iolen, bp->bio_data, fwmem_biodone);
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}
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if (xfer == NULL) {
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err = EIO;
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goto error;
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}
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/* XXX */
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bp->bio_resid = bp->bio_bcount - iolen;
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error:
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splx(s);
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if (err != 0) {
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if (fwmem_debug)
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printf("%s: err=%d\n", __FUNCTION__, err);
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bp->bio_error = err;
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bp->bio_flags |= BIO_ERROR;
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bp->bio_resid = bp->bio_bcount;
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biodone(bp);
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}
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}
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int
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fwmem_ioctl (dev_t dev, u_long cmd, caddr_t data, int flag, fw_proc *td)
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{
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struct fwmem_softc *fms;
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int err = 0;
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fms = (struct fwmem_softc *)dev->si_drv1;
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switch (cmd) {
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case FW_SDEUI64:
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bcopy(data, &fms->eui, sizeof(struct fw_eui64));
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break;
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case FW_GDEUI64:
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bcopy(&fms->eui, data, sizeof(struct fw_eui64));
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break;
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default:
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err = EINVAL;
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}
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return(err);
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}
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int
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fwmem_poll (dev_t dev, int events, fw_proc *td)
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{
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return EINVAL;
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}
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int
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#if __FreeBSD_version < 500102
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fwmem_mmap (dev_t dev, vm_offset_t offset, int nproto)
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#else
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fwmem_mmap (dev_t dev, vm_offset_t offset, vm_paddr_t *paddr, int nproto)
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#endif
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{
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return EINVAL;
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}
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