2000-06-14 11:01:42 -04:00
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/*
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* libraw1394 - library for raw access to the 1394 bus with the Linux subsystem.
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*
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* Copyright (C) 1999,2000 Andreas Bombe
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*
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* This library is licensed under the GNU Lesser General Public License (LGPL),
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* version 2.1 or later. See the file COPYING.LIB in the distribution for
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* details.
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*/
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1999-12-02 18:07:38 -05:00
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2000-05-28 17:00:56 -04:00
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#include <config.h>
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1999-12-02 18:07:38 -05:00
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#include <unistd.h>
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2000-02-06 10:10:14 -05:00
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#include <errno.h>
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1999-12-02 18:07:38 -05:00
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#include "raw1394.h"
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#include "kernel-raw1394.h"
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#include "raw1394_private.h"
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int raw1394_start_read(struct raw1394_handle *handle, nodeid_t node,
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nodeaddr_t addr, size_t length, quadlet_t *buffer,
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unsigned long tag)
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{
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struct raw1394_request *req = &handle->req;
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CLEAR_REQ(req);
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req->type = RAW1394_REQ_ASYNC_READ;
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req->generation = handle->generation;
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req->tag = tag;
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2000-06-02 13:03:00 -04:00
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req->address = ((__u64)node << 48) | addr;
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1999-12-02 18:07:38 -05:00
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req->length = length;
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req->recvb = ptr2int(buffer);
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1999-12-02 18:07:38 -05:00
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return (int)write(handle->fd, req, sizeof(*req));
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}
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int raw1394_start_write(struct raw1394_handle *handle, nodeid_t node,
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nodeaddr_t addr, size_t length, quadlet_t *data,
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unsigned long tag)
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{
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struct raw1394_request *req = &handle->req;
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CLEAR_REQ(req);
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req->type = RAW1394_REQ_ASYNC_WRITE;
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req->generation = handle->generation;
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req->tag = tag;
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req->address = ((__u64)node << 48) | addr;
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req->length = length;
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req->sendb = ptr2int(data);
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return (int)write(handle->fd, req, sizeof(*req));
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}
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2000-02-06 10:10:14 -05:00
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int raw1394_start_lock(struct raw1394_handle *handle, nodeid_t node,
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nodeaddr_t addr, unsigned int extcode, quadlet_t data,
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quadlet_t arg, quadlet_t *result, unsigned long tag)
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{
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struct raw1394_request *req = &handle->req;
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quadlet_t sendbuf[2];
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if ((extcode > 7) || (extcode == 0)) {
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errno = EINVAL;
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return -1;
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}
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CLEAR_REQ(req);
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req->type = RAW1394_REQ_LOCK;
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req->generation = handle->generation;
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req->tag = tag;
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2000-06-02 13:03:00 -04:00
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req->address = ((__u64)node << 48) | addr;
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req->sendb = ptr2int(sendbuf);
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req->recvb = ptr2int(result);
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2000-04-26 21:09:52 -04:00
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req->misc = extcode;
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switch (extcode) {
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case 3: /* EXTCODE_FETCH_ADD */
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case 4: /* EXTCODE_LITTLE_ADD */
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sendbuf[0] = data;
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req->length = 4;
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break;
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default:
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sendbuf[0] = arg;
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sendbuf[1] = data;
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req->length = 8;
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break;
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}
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return (int)write(handle->fd, req, sizeof(*req));
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}
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2000-08-05 22:44:00 -04:00
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int raw1394_start_iso_write(struct raw1394_handle *handle, unsigned int channel,
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unsigned int tag, unsigned int sy,
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unsigned int speed, size_t length, quadlet_t *data,
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unsigned long rawtag)
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{
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struct raw1394_request *req = &handle->req;
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CLEAR_REQ(req);
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req->type = RAW1394_REQ_ISO_SEND;
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req->generation = handle->generation;
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2000-09-13 19:24:53 -04:00
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req->tag = rawtag;
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2000-08-05 22:44:00 -04:00
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req->address = ((__u64)channel << 48) | speed;
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req->misc = (tag << 16) | sy;
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req->length = length;
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req->sendb = ptr2int(data);
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2000-08-05 22:44:00 -04:00
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return (int)write(handle->fd, req, sizeof(*req));
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}
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1999-12-02 18:07:38 -05:00
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1999-12-29 17:24:32 -05:00
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#define SYNCFUNC_VARS \
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struct sync_cb_data sd = { 0, 0 }; \
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struct raw1394_reqhandle rh = { (req_callback_t)_raw1394_sync_cb, \
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&sd }; \
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int err = 0
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#define SYNCFUNC_BODY \
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while (!sd.done) { \
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if (err < 0) return err; \
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err = raw1394_loop_iterate(handle); \
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} \
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handle->err = sd.errcode; \
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errno = raw1394_errcode_to_errno(sd.errcode); \
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return (errno ? -1 : 0)
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1999-12-02 18:07:38 -05:00
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int raw1394_read(struct raw1394_handle *handle, nodeid_t node, nodeaddr_t addr,
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size_t length, quadlet_t *buffer)
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{
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SYNCFUNC_VARS;
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err = raw1394_start_read(handle, node, addr, length, buffer,
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(unsigned long)&rh);
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SYNCFUNC_BODY;
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}
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int raw1394_write(struct raw1394_handle *handle, nodeid_t node, nodeaddr_t addr,
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size_t length, quadlet_t *data)
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{
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SYNCFUNC_VARS;
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err = raw1394_start_write(handle, node, addr, length, data,
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(unsigned long)&rh);
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SYNCFUNC_BODY;
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}
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2000-02-06 10:10:14 -05:00
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int raw1394_lock(struct raw1394_handle *handle, nodeid_t node, nodeaddr_t addr,
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2000-04-14 20:33:26 -04:00
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unsigned int extcode, quadlet_t data, quadlet_t arg,
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quadlet_t *result)
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2000-02-06 10:10:14 -05:00
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{
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SYNCFUNC_VARS;
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2000-04-14 20:33:26 -04:00
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err = raw1394_start_lock(handle, node, addr, extcode, data, arg, result,
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(unsigned long)&rh);
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SYNCFUNC_BODY;
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}
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2000-08-05 22:44:00 -04:00
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int raw1394_iso_write(struct raw1394_handle *handle, unsigned int channel,
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unsigned int tag, unsigned int sy, unsigned int speed,
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size_t length, quadlet_t *data)
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{
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SYNCFUNC_VARS;
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err = raw1394_start_iso_write(handle, channel, tag, sy, speed, length,
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data, (unsigned long)&rh);
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SYNCFUNC_BODY;
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}
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1999-12-02 18:07:38 -05:00
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#undef SYNCFUNC_VARS
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#undef SYNCFUNC_BODY
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