Make raw1394_iso_xmit_write work.
This commit is contained in:
Kristian Høgsberg
parent
d9b43daf48
commit
aa70f855b3
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@ -127,10 +127,13 @@ struct raw1394_handle {
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int packet_count;
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int buf_packets;
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int max_packet_size;
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int packet_header_index;
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int prebuffer;
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int start_on_cycle;
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enum raw1394_iso_dma_recv_mode recv_mode;
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raw1394_iso_xmit_handler_t xmit_handler;
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raw1394_iso_recv_handler_t recv_handler;
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unsigned char *buffer, *head, *tail;
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unsigned char *buffer;
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struct fw_cdev_queue_iso queue_iso;
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struct fw_cdev_iso_packet *packets;
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@ -31,14 +31,14 @@
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#include "juju.h"
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static int
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refill_xmit_buffer(raw1394handle_t handle, struct fw_cdev_queue_iso *queue_iso)
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queue_xmit_packets(raw1394handle_t handle)
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{
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int i;
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struct fw_cdev_iso_packet *p = handle->iso.packets;
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struct fw_cdev_queue_iso queue_iso;
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enum raw1394_iso_disposition d;
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unsigned int len, dropped;
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unsigned char tag, sy, *data, *buffer;
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int cycle;
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int cycle, i;
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buffer = handle->iso.buffer +
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handle->iso.packet_index * handle->iso.max_packet_size;
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@ -52,7 +52,8 @@ refill_xmit_buffer(raw1394handle_t handle, struct fw_cdev_queue_iso *queue_iso)
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/* FIXME: handle the different dispositions. */
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p->payload_length = len;
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p->interrupt = handle->iso.packet_phase == 0;
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p->interrupt =
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handle->iso.packet_phase == handle->iso.irq_interval - 1;
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p->skip = 0;
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p->tag = tag;
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p->sy = sy;
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@ -63,19 +64,21 @@ refill_xmit_buffer(raw1394handle_t handle, struct fw_cdev_queue_iso *queue_iso)
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handle->iso.packet_count++;
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handle->iso.packet_phase++;
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if (handle->iso.packet_phase == handle->iso.irq_interval)
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handle->iso.packet_phase = 0;
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if (handle->iso.packet_index == handle->iso.buf_packets) {
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handle->iso.packet_index = 0;
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break;
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}
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if (handle->iso.packet_phase == handle->iso.irq_interval)
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handle->iso.packet_phase = 0;
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}
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queue_iso->packets = ptr_to_u64(handle->iso.packets);
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queue_iso->size =
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handle->iso.irq_interval * sizeof handle->iso.packets[0];
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queue_iso->data = ptr_to_u64(buffer);
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queue_iso.packets = ptr_to_u64(handle->iso.packets);
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queue_iso.size = i * sizeof handle->iso.packets[0];
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queue_iso.data = ptr_to_u64(buffer);
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len = ioctl(handle->iso.fd, FW_CDEV_IOC_QUEUE_ISO, &queue_iso);
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if (len < 0)
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return -1;
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return 0;
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}
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@ -83,20 +86,16 @@ refill_xmit_buffer(raw1394handle_t handle, struct fw_cdev_queue_iso *queue_iso)
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static int
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flush_xmit_packets(raw1394handle_t handle, int limit)
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{
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struct fw_cdev_queue_iso queue_iso;
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int len;
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handle->iso.packet_index -= handle->iso.irq_interval;
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if (handle->iso.xmit_handler == NULL)
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return 0;
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while (handle->iso.packet_index + handle->iso.irq_interval <= limit) {
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if (handle->iso.queue_iso.size == 0)
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refill_xmit_buffer(handle, &queue_iso);
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len = ioctl(handle->iso.fd, FW_CDEV_IOC_QUEUE_ISO, &queue_iso);
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if (len < 0)
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return -1;
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if (handle->iso.queue_iso.size > 0)
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break;
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}
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if (limit < handle->iso.irq_interval)
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limit = handle->iso.irq_interval;
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while (handle->iso.packet_count + handle->iso.irq_interval <= limit)
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queue_xmit_packets(handle);
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return 0;
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}
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@ -110,13 +109,19 @@ int raw1394_iso_xmit_start(raw1394handle_t handle, int start_on_cycle,
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if (prebuffer_packets == -1)
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prebuffer_packets = handle->iso.irq_interval;
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handle->iso.prebuffer = prebuffer_packets;
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handle->iso.start_on_cycle = start_on_cycle;
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flush_xmit_packets(handle, prebuffer_packets);
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if (handle->iso.prebuffer <= handle->iso.packet_count) {
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start_iso.cycle = start_on_cycle;
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retval = ioctl(handle->iso.fd, FW_CDEV_IOC_START_ISO, &start_iso);
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retval = ioctl(handle->iso.fd,
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FW_CDEV_IOC_START_ISO, &start_iso);
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if (retval < 0)
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return retval;
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}
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return flush_xmit_packets(handle, handle->iso.buf_packets);
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}
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@ -248,6 +253,7 @@ static int handle_iso_event(raw1394handle_t handle,
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switch (handle->iso.type) {
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case FW_CDEV_ISO_CONTEXT_TRANSMIT:
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handle->iso.packet_count -= handle->iso.irq_interval;
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return flush_xmit_packets(handle, handle->iso.buf_packets);
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case FW_CDEV_ISO_CONTEXT_RECEIVE:
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return flush_recv_packets(handle, interrupt);
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@ -261,25 +267,76 @@ int raw1394_iso_xmit_write(raw1394handle_t handle, unsigned char *data,
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unsigned int len, unsigned char tag,
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unsigned char sy)
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{
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struct fw_cdev_iso_packet packet;
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struct fw_cdev_queue_iso queue_iso;
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struct fw_cdev_start_iso start_iso;
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struct fw_cdev_iso_packet *p;
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void *buffer;
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int first;
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packet.payload_length = len;
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packet.interrupt = handle->iso.packet_phase == 0;
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packet.skip = 0;
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packet.tag = tag;
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packet.sy = sy;
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packet.header_length = 0;
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if (len > handle->iso.max_packet_size) {
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errno = EINVAL;
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return -1;
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}
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while (handle->iso.packet_count + handle->iso.irq_interval > handle->iso.buf_packets)
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raw1394_loop_iterate(handle);
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p = &handle->iso.packets[handle->iso.packet_header_index];
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p->payload_length = len;
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p->interrupt =
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handle->iso.packet_phase == handle->iso.irq_interval - 1;
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p->skip = 0;
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p->tag = tag;
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p->sy = sy;
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p->header_length = 0;
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buffer = handle->iso.buffer +
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handle->iso.packet_index * handle->iso.max_packet_size;
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memcpy(buffer, data, len);
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handle->iso.packet_index++;
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handle->iso.packet_count++;
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handle->iso.packet_phase++;
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handle->iso.packet_header_index++;
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first = handle->iso.packet_index - handle->iso.packet_header_index;
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if (handle->iso.packet_index == handle->iso.buf_packets)
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handle->iso.packet_index = 0;
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if (handle->iso.packet_phase == handle->iso.irq_interval)
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handle->iso.packet_phase = 0;
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/* FIXME: circular buffer goo. */
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/* Queue the packets in the kernel if we filled up the packets
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* array or wrapped the payload buffer. */
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if (handle->iso.packet_header_index == handle->iso.irq_interval ||
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handle->iso.packet_index == 0) {
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buffer = handle->iso.buffer + first * handle->iso.max_packet_size;
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memcpy(handle->iso.head, data, len);
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handle->iso.head += len;
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queue_iso.packets = ptr_to_u64(handle->iso.packets);
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queue_iso.size = handle->iso.packet_header_index * sizeof handle->iso.packets[0];
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queue_iso.data = ptr_to_u64(buffer);
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handle->iso.packet_header_index = 0;
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len = ioctl(handle->iso.fd, FW_CDEV_IOC_QUEUE_ISO, &queue_iso);
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if (len < 0)
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return -1;
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}
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/* Start the streaming if it's not already running and if
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* we've buffered up enough packets. */
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if (handle->iso.prebuffer > 0 &&
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handle->iso.packet_count >= handle->iso.prebuffer) {
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/* Set this to 0 to indicate that we're running. */
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handle->iso.prebuffer = 0;
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start_iso.cycle = handle->iso.start_on_cycle;
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len = ioctl(handle->iso.fd,
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FW_CDEV_IOC_START_ISO, &start_iso);
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if (len < 0)
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return len;
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}
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return 0;
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}
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int raw1394_iso_xmit_sync(raw1394handle_t handle)
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