Added FCP listen functionality.

git-svn-id: svn://svn.linux1394.org/libraw1394/trunk@12 53a565d1-3bb7-0310-b661-cf11e63c67ab

src/Makefile.am

@@ -10,6 +10,7 @@ libraw1394_la_SOURCES =   \
 	eventloop.c       \
 	readwrite.c       \
 	iso.c             \
+	fcp.c             \
 	kernel-raw1394.h  \
 	raw1394_private.h
 

src/eventloop.c

@@ -36,6 +36,15 @@ int raw1394_loop_iterate(struct raw1394_handle *handle)
                 }
                 break;
 
+        case RAW1394_REQ_FCP_REQUEST:
+                if (handle->fcp_handler) {
+                        retval = handle->fcp_handler(handle, req->misc & 0xffff,
+                                                     req->misc >> 16,
+                                                     req->length,
+                                                     (char *)handle->buffer);
+                }
+                break;
+
         default:
                 if (handle->tag_handler) {
                         retval = handle->tag_handler(handle, req->tag,
@@ -90,3 +99,14 @@ iso_handler_t raw1394_set_iso_handler(struct raw1394_handle *handle,
         handle->iso_handler[channel] = new;
         return NULL;
 }
+
+fcp_handler_t raw1394_set_fcp_handler(struct raw1394_handle *handle,
+                                      fcp_handler_t new)
+{
+        fcp_handler_t old;
+
+        old = handle->fcp_handler;
+        handle->fcp_handler = new;
+
+        return old;
+}

src/fcp.c

@@ -0,0 +1,53 @@
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "raw1394.h"
+#include "kernel-raw1394.h"
+#include "raw1394_private.h"
+
+static int do_fcp_listen(struct raw1394_handle *handle)
+{
+        struct sync_cb_data sd = { 0, 0 };
+        struct raw1394_reqhandle rh = { (req_callback_t)_raw1394_sync_cb, &sd };
+        int err;
+        struct raw1394_request *req = &handle->req;
+
+        CLEAR_REQ(req);
+        req->type = RAW1394_REQ_FCP_LISTEN;
+        req->generation = handle->generation;
+        req->misc = 0;
+        req->tag = (unsigned long)&rh;
+        req->recvb = handle->buffer;
+        req->length = 512;
+
+        err = write(handle->fd, req, sizeof(*req));
+        while (!sd.done) {
+                if (err < 0) return err;
+                err = raw1394_loop_iterate(handle);
+        }
+
+        switch (sd.errcode) {
+        case RAW1394_ERROR_ALREADY:
+                errno = EALREADY;
+                return -1;
+
+        case RAW1394_ERROR_INVALID_ARG:
+                errno = EINVAL;
+                return -1;
+
+        default:
+                errno = 0;
+                return sd.errcode;
+        }
+}
+
+int raw1394_start_fcp_listen(struct raw1394_handle *handle)
+{
+        return do_fcp_listen(handle);
+}
+
+int raw1394_stop_fcp_listen(struct raw1394_handle *handle)
+{
+        return do_fcp_listen(handle);
+}

src/kernel-raw1394.h

@@ -5,7 +5,7 @@
 #define RAW1394_DEVICE_MAJOR      171
 #define RAW1394_DEVICE_NAME       "raw1394"
 
-#define RAW1394_KERNELAPI_VERSION 1
+#define RAW1394_KERNELAPI_VERSION 2
 
 /* state: opened */
 #define RAW1394_REQ_INITIALIZE    1
@@ -21,10 +21,12 @@
 #define RAW1394_REQ_LOCK64        103
 
 #define RAW1394_REQ_ISO_LISTEN    200
+#define RAW1394_REQ_FCP_LISTEN    201
 
 /* kernel to user */
 #define RAW1394_REQ_BUS_RESET     10000
 #define RAW1394_REQ_ISO_RECEIVE   10001
+#define RAW1394_REQ_FCP_REQUEST   10002
 
 /* error codes */
 #define RAW1394_ERROR_NONE        0
@@ -67,6 +69,7 @@ struct raw1394_khost_list {
 
 struct iso_block_store {
         atomic_t refcount;
+        size_t data_size;
         quadlet_t data[0];
 };
 
@@ -83,6 +86,8 @@ struct file_info {
         spinlock_t reqlists_lock;
         wait_queue_head_t poll_wait_complete;
 
+        u8 *fcp_buffer;
+
         u64 listen_channels;
         quadlet_t *iso_buffer;
         size_t iso_buffer_length;

src/raw1394.h

@@ -104,6 +104,16 @@ iso_handler_t raw1394_set_iso_handler(raw1394handle_t handle,
                                       unsigned int channel,
                                       iso_handler_t new_h);
 
+/*
+ * Set the handler that will be called when the local FCP_COMMAND or
+ * FCP_RESPONSE register gets written to.  Returns old handler.
+ *
+ * The handler arg nodeid contains the node ID of the writer.  If response is 0
+ * FCP_COMMAND was written, FCP_RESPONSE otherwise.
+ */
+typedef int (*fcp_handler_t)(raw1394handle_t, nodeid_t nodeid, int response,
+                             size_t length, unsigned char *data);
+fcp_handler_t raw1394_set_fcp_handlet(raw1394handle_t, fcp_handler_t);
 
 /*
  * This is the general request handle.  It is used by the default tag handler
@@ -147,6 +157,13 @@ int raw1394_lock(struct raw1394_handle *handle, nodeid_t node, nodeaddr_t addr,
 int raw1394_start_iso_rcv(raw1394handle_t handle, unsigned int channel);
 int raw1394_stop_iso_rcv(raw1394handle_t handle, unsigned int channel);
 
+/*
+ * Start and stop receiving requests sent to the local FCP_COMMAND and
+ * FCP_RESPONSE registers.
+ */
+int raw1394_start_fcp_listen(struct raw1394_handle *handle);
+int raw1394_stop_fcp_listen(struct raw1394_handle *handle);
+
 #ifdef __cplusplus
 }
 #endif

src/raw1394_private.h

@@ -11,6 +11,7 @@ struct raw1394_handle {
 
         bus_reset_handler_t bus_reset_handler;
         tag_handler_t tag_handler;
+        fcp_handler_t fcp_handler;
         iso_handler_t iso_handler[64];
 
         struct raw1394_request req;