From 18c6919398b63c714040f0971e98fc940bb3b32d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Kristian=20H=C3=B8gsberg?= Date: Tue, 3 Apr 2007 21:23:08 -0400 Subject: [PATCH] Handle rawiso dispositions. --- juju/raw1394-iso.c | 44 +++++++++++++++++++++++++++++++++++++------- 1 file changed, 37 insertions(+), 7 deletions(-) diff --git a/juju/raw1394-iso.c b/juju/raw1394-iso.c index b97bf87..bbf49f0 100644 --- a/juju/raw1394-iso.c +++ b/juju/raw1394-iso.c @@ -30,7 +30,7 @@ #include "juju.h" -static int +static enum raw1394_iso_disposition queue_xmit_packets(raw1394handle_t handle) { struct fw_cdev_iso_packet *p = handle->iso.packets; @@ -53,7 +53,8 @@ queue_xmit_packets(raw1394handle_t handle) d = handle->iso.xmit_handler(handle, handle->iso.head, &len, &tag, &sy, cycle, dropped); - /* FIXME: handle the different dispositions. */ + if (d != RAW1394_ISO_OK) + break; p->payload_length = len; p->interrupt = @@ -77,14 +78,15 @@ queue_xmit_packets(raw1394handle_t handle) len = ioctl(handle->iso.fd, FW_CDEV_IOC_QUEUE_ISO, &queue_iso); if (len < 0) - return -1; + return RAW1394_ISO_ERROR; - return 0; + return d; } static int flush_xmit_packets(raw1394handle_t handle, int limit) { + enum raw1394_iso_disposition d; int len; if (handle->iso.xmit_handler == NULL) @@ -93,8 +95,19 @@ flush_xmit_packets(raw1394handle_t handle, int limit) if (limit < handle->iso.irq_interval) limit = handle->iso.irq_interval; - while (handle->iso.packet_count + handle->iso.irq_interval <= limit) - queue_xmit_packets(handle); + while (handle->iso.packet_count + handle->iso.irq_interval <= limit) { + d = queue_xmit_packets(handle); + switch (d) { + case RAW1394_ISO_DEFER: + case RAW1394_ISO_AGAIN: + return 0; + case RAW1394_ISO_ERROR: + return -1; + case RAW1394_ISO_STOP: + raw1394_iso_stop(handle); + return 0; + } + } return 0; } @@ -168,7 +181,7 @@ queue_recv_packets(raw1394handle_t handle) return 0; } -static int +static enum raw1394_iso_disposition flush_recv_packets(raw1394handle_t handle, struct fw_cdev_event_iso_interrupt *interrupt) { @@ -192,6 +205,10 @@ flush_recv_packets(raw1394handle_t handle, d = handle->iso.recv_handler(handle, handle->iso.tail, len, channel, tag, sy, cycle, dropped); + if (d != RAW1394_ISO_OK) + /* FIXME: we need to save the headers so we + * can restart this loop. */ + break; cycle++; handle->iso.tail += handle->iso.max_packet_size; @@ -200,6 +217,19 @@ flush_recv_packets(raw1394handle_t handle, handle->iso.tail = handle->iso.buffer; } + switch (d) { + case RAW1394_ISO_OK: + case RAW1394_ISO_DEFER: + break; + + case RAW1394_ISO_ERROR: + return -1; + + case RAW1394_ISO_STOP: + raw1394_iso_stop(handle); + return 0; + } + while (handle->iso.packet_count + handle->iso.irq_interval <= handle->iso.buf_packets) queue_recv_packets(handle);