1 /* 2 * Copyright (C) 2002 3 * Hidetoshi Shimokawa. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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: 15 * 16 * This product includes software developed by Hidetoshi Shimokawa. 17 * 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. 21 * 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 32 * SUCH DAMAGE. 33 * 34 * $FreeBSD$ 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/types.h> 40 41 #include <sys/kernel.h> 42 #include <sys/malloc.h> 43 #include <sys/conf.h> 44 #include <sys/uio.h> 45 #include <sys/sysctl.h> 46 47 #include <sys/bus.h> 48 49 #include <sys/signal.h> 50 #include <sys/mman.h> 51 #include <sys/ioccom.h> 52 53 #include <dev/firewire/firewire.h> 54 #include <dev/firewire/firewirereg.h> 55 #include <dev/firewire/fwmem.h> 56 57 static int fwmem_speed=2, fwmem_debug=0; 58 static struct fw_eui64 fwmem_eui64; 59 SYSCTL_DECL(_hw_firewire); 60 SYSCTL_NODE(_hw_firewire, OID_AUTO, fwmem, CTLFLAG_RD, 0, 61 "FireWire Memory Access"); 62 SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_hi, CTLFLAG_RW, 63 &fwmem_eui64.hi, 0, "Fwmem target EUI64 high"); 64 SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_low, CTLFLAG_RW, 65 &fwmem_eui64.lo, 0, "Fwmem target EUI64 low"); 66 SYSCTL_INT(_hw_firewire_fwmem, OID_AUTO, speed, CTLFLAG_RW, &fwmem_speed, 0, 67 "Fwmem link speed"); 68 SYSCTL_INT(_debug, OID_AUTO, fwmem_debug, CTLFLAG_RW, &fwmem_debug, 0, 69 "Fwmem driver debug flag"); 70 71 static struct fw_xfer *fwmem_xfer_req(struct fw_device *, caddr_t, 72 int, int, void *); 73 74 static struct fw_xfer * 75 fwmem_xfer_req( 76 struct fw_device *fwdev, 77 caddr_t sc, 78 int spd, 79 int len, 80 void *hand) 81 { 82 struct fw_xfer *xfer; 83 84 xfer = fw_xfer_alloc(); 85 if (xfer == NULL) 86 return NULL; 87 88 xfer->fc = fwdev->fc; 89 xfer->dst = FWLOCALBUS | fwdev->dst; 90 if (spd < 0) 91 xfer->spd = fwdev->speed; 92 else 93 xfer->spd = min(spd, fwdev->speed); 94 xfer->send.len = len; 95 xfer->send.buf = malloc(len, M_DEVBUF, M_NOWAIT | M_ZERO); 96 97 if (xfer->send.buf == NULL) { 98 fw_xfer_free(xfer); 99 return NULL; 100 } 101 102 xfer->send.off = 0; 103 xfer->act.hand = hand; 104 xfer->retry_req = fw_asybusy; 105 xfer->sc = sc; 106 107 return xfer; 108 } 109 110 struct fw_xfer * 111 fwmem_read_quad( 112 struct fw_device *fwdev, 113 caddr_t sc, 114 u_int8_t spd, 115 u_int16_t dst_hi, 116 u_int32_t dst_lo, 117 void (*hand)(struct fw_xfer *)) 118 { 119 struct fw_xfer *xfer; 120 struct fw_pkt *fp; 121 122 xfer = fwmem_xfer_req(fwdev, sc, spd, 12, hand); 123 if (xfer == NULL) 124 return NULL; 125 126 fp = (struct fw_pkt *)xfer->send.buf; 127 fp->mode.rreqq.tcode = FWTCODE_RREQQ; 128 fp->mode.rreqq.dst = htons(xfer->dst); 129 fp->mode.rreqq.dest_hi = htons(dst_hi); 130 fp->mode.rreqq.dest_lo = htonl(dst_lo); 131 132 if (fwmem_debug) 133 printf("fwmem_read_quad: %d %04x:%08x\n", fwdev->dst, 134 dst_hi, dst_lo); 135 136 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 137 return xfer; 138 139 fw_xfer_free(xfer); 140 return NULL; 141 } 142 143 struct fw_xfer * 144 fwmem_write_quad( 145 struct fw_device *fwdev, 146 caddr_t sc, 147 u_int8_t spd, 148 u_int16_t dst_hi, 149 u_int32_t dst_lo, 150 u_int32_t data, 151 void (*hand)(struct fw_xfer *)) 152 { 153 struct fw_xfer *xfer; 154 struct fw_pkt *fp; 155 156 xfer = fwmem_xfer_req(fwdev, sc, spd, 16, hand); 157 if (xfer == NULL) 158 return NULL; 159 160 fp = (struct fw_pkt *)xfer->send.buf; 161 fp->mode.wreqq.tcode = FWTCODE_RREQQ; 162 fp->mode.wreqq.dst = htons(xfer->dst); 163 fp->mode.wreqq.dest_hi = htons(dst_hi); 164 fp->mode.wreqq.dest_lo = htonl(dst_lo); 165 166 fp->mode.wreqq.data = htonl(data); 167 168 if (fwmem_debug) 169 printf("fwmem_write_quad: %d %04x:%08x %08x\n", fwdev->dst, 170 dst_hi, dst_lo, data); 171 172 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 173 return xfer; 174 175 fw_xfer_free(xfer); 176 return NULL; 177 } 178 179 struct fw_xfer * 180 fwmem_read_block( 181 struct fw_device *fwdev, 182 caddr_t sc, 183 u_int8_t spd, 184 u_int16_t dst_hi, 185 u_int32_t dst_lo, 186 int len, 187 void (*hand)(struct fw_xfer *)) 188 { 189 struct fw_xfer *xfer; 190 struct fw_pkt *fp; 191 192 xfer = fwmem_xfer_req(fwdev, sc, spd, 16, hand); 193 if (xfer == NULL) 194 return NULL; 195 196 fp = (struct fw_pkt *)xfer->send.buf; 197 fp->mode.rreqb.tcode = FWTCODE_RREQB; 198 fp->mode.rreqb.dst = htons(xfer->dst); 199 fp->mode.rreqb.dest_hi = htons(dst_hi); 200 fp->mode.rreqb.dest_lo = htonl(dst_lo); 201 fp->mode.rreqb.len = htons(len); 202 203 if (fwmem_debug) 204 printf("fwmem_read_block: %d %04x:%08x %d\n", fwdev->dst, 205 dst_hi, dst_lo, len); 206 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 207 return xfer; 208 209 fw_xfer_free(xfer); 210 return NULL; 211 } 212 213 int 214 fwmem_open (dev_t dev, int flags, int fmt, fw_proc *td) 215 { 216 int err = 0; 217 return err; 218 } 219 220 int 221 fwmem_close (dev_t dev, int flags, int fmt, fw_proc *td) 222 { 223 int err = 0; 224 return err; 225 } 226 227 #define MAXLEN 2048 228 #define USE_QUAD 0 229 int 230 fwmem_read (dev_t dev, struct uio *uio, int ioflag) 231 { 232 struct firewire_softc *sc; 233 struct fw_device *fwdev; 234 struct fw_xfer *xfer; 235 int err = 0, pad; 236 int unit = DEV2UNIT(dev); 237 u_int16_t dst_hi; 238 u_int32_t dst_lo; 239 off_t offset; 240 int len; 241 242 sc = devclass_get_softc(firewire_devclass, unit); 243 fwdev = fw_noderesolve(sc->fc, fwmem_eui64); 244 if (fwdev == NULL) { 245 printf("fwmem: no such device ID:%08x%08x\n", 246 fwmem_eui64.hi, fwmem_eui64.lo); 247 return EINVAL; 248 } 249 250 pad = uio->uio_offset % 4; 251 if (fwmem_debug && pad != 0) 252 printf("unaligned\n"); 253 while(uio->uio_resid > 0) { 254 offset = uio->uio_offset; 255 offset -= pad; 256 dst_hi = (offset >> 32) & 0xffff; 257 dst_lo = offset & 0xffffffff; 258 #if USE_QUAD 259 xfer = fwmem_read_quad(fwdev, NULL, fwmem_speed, 260 dst_hi, dst_lo, fw_asy_callback); 261 if (xfer == NULL) 262 return EINVAL; 263 err = tsleep((caddr_t)xfer, FWPRI, "fwmem", hz); 264 if (err !=0 || xfer->resp != 0 || xfer->recv.buf == NULL) 265 return EINVAL; /* XXX */ 266 err = uiomove(xfer->recv.buf + xfer->recv.off + 4*3 + pad, 267 4 - pad, uio); 268 #else 269 len = uio->uio_resid; 270 if (len > MAXLEN) 271 len = MAXLEN; 272 xfer = fwmem_read_block(fwdev, NULL, fwmem_speed, 273 dst_hi, dst_lo, len, fw_asy_callback); 274 if (xfer == NULL) 275 return EINVAL; 276 err = tsleep((caddr_t)xfer, FWPRI, "fwmem", hz); 277 if (err != 0 || xfer->resp != 0 || xfer->recv.buf == NULL) 278 return EINVAL; /* XXX */ 279 err = uiomove(xfer->recv.buf + xfer->recv.off + 4*4 + pad, 280 len - pad, uio); 281 #endif 282 if (err) 283 return err; 284 fw_xfer_free(xfer); 285 pad = 0; 286 } 287 return err; 288 } 289 int 290 fwmem_write (dev_t dev, struct uio *uio, int ioflag) 291 { 292 return EINVAL; 293 } 294 int 295 fwmem_ioctl (dev_t dev, u_long cmd, caddr_t data, int flag, fw_proc *td) 296 { 297 return EINVAL; 298 } 299 int 300 fwmem_poll (dev_t dev, int events, fw_proc *td) 301 { 302 return EINVAL; 303 } 304 int 305 fwmem_mmap (dev_t dev, vm_offset_t offset, int nproto) 306 { 307 return EINVAL; 308 } 309