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Date: Fri, 16 Jul 2010 22:28:54 +0200 (CEST)
From: Stefan Richter <stefanr@...6.in-berlin.de>
To: linux1394-devel@...ts.sourceforge.net
cc: linux-kernel@...r.kernel.org
Subject: [PATCH libraw1394] Implement raw1394_(start_)phy_packet_write() on
new firewire backend
Requires kernel 2.6.36 or newer at runtime and linux-headers 2.6.36 or newer
at build time.
Signed-off-by: Stefan Richter <stefanr@...6.in-berlin.de>
---
src/dispatch.c | 2 +-
src/fw.c | 91 +++++++++++++++++++++++++++++++++++++++++++++++--------
src/fw.h | 6 ++--
3 files changed, 81 insertions(+), 18 deletions(-)
diff --git a/src/dispatch.c b/src/dispatch.c
index c6ff332..04fbad6 100644
--- a/src/dispatch.c
+++ b/src/dispatch.c
@@ -287,7 +287,7 @@ int raw1394_phy_packet_write (raw1394handle_t handle, quadlet_t data)
return -1;
}
if (handle->is_fw)
- return fw_phy_packet_write(handle->mode.fw, data);
+ return fw_phy_packet_write(handle, data);
else
return ieee1394_phy_packet_write(handle, data);
}
diff --git a/src/fw.c b/src/fw.c
index b1f12c9..bfe1e5e 100644
--- a/src/fw.c
+++ b/src/fw.c
@@ -340,6 +340,16 @@ handle_device_event(raw1394handle_t handle,
sizeof u->iso_resource);
return 0;
#endif
+
+#ifdef FW_CDEV_EVENT_PHY_PACKET_SENT /* added in kernel 2.6.36 */
+ case FW_CDEV_EVENT_PHY_PACKET_SENT:
+ rc = u64_to_ptr(u->phy_packet.closure);
+ errcode = fw_to_raw1394_errcode(u->phy_packet.rcode);
+ tag = rc->tag;
+ free(rc);
+
+ return fwhandle->tag_handler(handle, tag, errcode);
+#endif
default:
case FW_CDEV_EVENT_ISO_INTERRUPT:
/* Never happens. */
@@ -985,20 +995,6 @@ int fw_wake_up(fw_handle_t handle)
return fw_echo_request(handle, 0);
}
-int fw_phy_packet_write (fw_handle_t handle, quadlet_t data)
-{
- errno = ENOSYS;
- return -1;
-}
-
-int
-fw_start_phy_packet_write(fw_handle_t handle,
- quadlet_t data, unsigned long tag)
-{
- errno = ENOSYS;
- return -1;
-}
-
static int
send_request(fw_handle_t handle, int tcode,
nodeid_t node, nodeaddr_t addr,
@@ -1220,6 +1216,47 @@ fw_start_async_stream(fw_handle_t handle, unsigned int channel,
0, addr, length, data, 0, NULL, rawtag);
}
+int
+fw_start_phy_packet_write(fw_handle_t handle, quadlet_t data, unsigned long tag)
+{
+#ifdef FW_CDEV_IOC_SEND_PHY_PACKET /* added in kernel 2.6.36 */
+ struct fw_cdev_send_phy_packet send_phy_packet;
+ struct request_closure *closure;
+ int retval;
+
+ if (handle->local_device == NULL) {
+ handle->err = -EPERM;
+ errno = EPERM;
+ return -1;
+ }
+
+ closure = malloc(sizeof *closure);
+ if (closure == NULL) {
+ handle->err = -RCODE_SEND_ERROR;
+ errno = fw_errcode_to_errno(handle->err);
+ return -1;
+ }
+
+ closure->data = NULL;
+ closure->length = 0;
+ closure->tag = tag;
+
+ send_phy_packet.closure = ptr_to_u64(closure);
+ send_phy_packet.data[0] = be32_to_cpu(data);
+ send_phy_packet.data[1] = ~be32_to_cpu(data);
+ send_phy_packet.generation = handle->local_device->generation;
+ retval = ioctl(handle->local_device->fd, FW_CDEV_IOC_SEND_PHY_PACKET,
+ &send_phy_packet);
+ if (retval < 0)
+ free(closure);
+
+ return retval;
+#else
+ errno = ENOSYS;
+ handle->err = -errno;
+ return -1;
+#endif
+}
int
fw_start_async_send(fw_handle_t handle,
@@ -1356,6 +1393,32 @@ fw_async_stream(raw1394handle_t handle, unsigned int channel,
}
int
+fw_phy_packet_write(raw1394handle_t handle, quadlet_t data)
+{
+ fw_handle_t fwhandle = handle->mode.fw;
+ struct raw1394_reqhandle reqhandle;
+ struct sync_data sd = { 0, 0 };
+ int err;
+
+ reqhandle.callback = sync_callback;
+ reqhandle.data = &sd;
+
+ err = fw_start_phy_packet_write(fwhandle, data,
+ (unsigned long) &reqhandle);
+
+ while (!sd.done) {
+ if (err < 0)
+ return err;
+ err = fw_loop_iterate(handle);
+ }
+
+ fwhandle->err = sd.err;
+ errno = fw_errcode_to_errno(sd.err);
+
+ return (errno ? -1 : 0);
+}
+
+int
fw_async_send(fw_handle_t handle,
size_t length, size_t header_length,
unsigned int expect_response,
diff --git a/src/fw.h b/src/fw.h
index b0ff169..bc374d5 100644
--- a/src/fw.h
+++ b/src/fw.h
@@ -159,9 +159,6 @@ int fw_arm_get_buf(fw_handle_t handle, nodeaddr_t start,
size_t length, void *buf);
int fw_echo_request(fw_handle_t handle, quadlet_t data);
int fw_wake_up(fw_handle_t handle);
-int fw_phy_packet_write (fw_handle_t handle, quadlet_t data);
-int fw_start_phy_packet_write(fw_handle_t handle,
- quadlet_t data, unsigned long tag);
int fw_start_read(fw_handle_t handle, nodeid_t node, nodeaddr_t addr,
size_t length, quadlet_t *buffer, unsigned long tag);
int fw_start_write(fw_handle_t handle, nodeid_t node, nodeaddr_t addr,
@@ -176,6 +173,8 @@ int fw_start_async_stream(fw_handle_t handle, unsigned int channel,
unsigned int tag, unsigned int sy,
unsigned int speed, size_t length, quadlet_t *data,
unsigned long rawtag);
+int fw_start_phy_packet_write(fw_handle_t handle,
+ quadlet_t data, unsigned long tag);
int fw_start_async_send(fw_handle_t handle,
size_t length, size_t header_length,
unsigned int expect_response,
@@ -193,6 +192,7 @@ int fw_lock64(raw1394handle_t handle, nodeid_t node, nodeaddr_t addr,
int fw_async_stream(raw1394handle_t handle, unsigned int channel,
unsigned int tag, unsigned int sy, unsigned int speed,
size_t length, quadlet_t *data);
+int fw_phy_packet_write(raw1394handle_t handle, quadlet_t data);
int fw_async_send(fw_handle_t handle,
size_t length, size_t header_length,
unsigned int expect_response,
--
1.7.1
--
Stefan Richter
-=====-==-=- -=== =----
http://arcgraph.de/sr/
--
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