#
fw-core-objs := fw-card.o fw-topology.o fw-transaction.o fw-iso.o \
- fw-device.o fw-device-cdev.o
+ fw-device.o fw-cdev.o
obj-$(CONFIG_FIREWIRE) += fw-core.o
obj-$(CONFIG_FIREWIRE_OHCI) += fw-ohci.o
--- /dev/null
+/* -*- c-basic-offset: 8 -*-
+ *
+ * fw-device-cdev.c - Char device for device raw access
+ *
+ * Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/wait.h>
+#include <linux/errno.h>
+#include <linux/device.h>
+#include <linux/vmalloc.h>
+#include <linux/poll.h>
+#include <linux/delay.h>
+#include <linux/mm.h>
+#include <linux/idr.h>
+#include <linux/compat.h>
+#include <linux/firewire-cdev.h>
+#include <asm/uaccess.h>
+#include "fw-transaction.h"
+#include "fw-topology.h"
+#include "fw-device.h"
+
+/* dequeue_event() just kfree()'s the event, so the event has to be
+ * the first field in the struct. */
+
+struct client;
+struct client_resource {
+ struct list_head link;
+ void (*release)(struct client *client, struct client_resource *r);
+ u32 handle;
+};
+
+struct event {
+ struct { void *data; size_t size; } v[2];
+ struct list_head link;
+};
+
+struct bus_reset {
+ struct event event;
+ struct fw_cdev_event_bus_reset reset;
+};
+
+struct response {
+ struct event event;
+ struct fw_transaction transaction;
+ struct client *client;
+ struct client_resource resource;
+ struct fw_cdev_event_response response;
+};
+
+struct iso_interrupt {
+ struct event event;
+ struct fw_cdev_event_iso_interrupt interrupt;
+};
+
+struct client {
+ u32 version;
+ struct fw_device *device;
+ spinlock_t lock;
+ u32 resource_handle;
+ struct list_head resource_list;
+ struct list_head event_list;
+ wait_queue_head_t wait;
+ u64 bus_reset_closure;
+
+ struct fw_iso_context *iso_context;
+ u64 iso_closure;
+ struct fw_iso_buffer buffer;
+ unsigned long vm_start;
+
+ struct list_head link;
+};
+
+static inline void __user *
+u64_to_uptr(__u64 value)
+{
+ return (void __user *)(unsigned long)value;
+}
+
+static inline __u64
+uptr_to_u64(void __user *ptr)
+{
+ return (__u64)(unsigned long)ptr;
+}
+
+static int fw_device_op_open(struct inode *inode, struct file *file)
+{
+ struct fw_device *device;
+ struct client *client;
+ unsigned long flags;
+
+ device = fw_device_from_devt(inode->i_rdev);
+ if (device == NULL)
+ return -ENODEV;
+
+ client = kzalloc(sizeof *client, GFP_KERNEL);
+ if (client == NULL)
+ return -ENOMEM;
+
+ client->device = fw_device_get(device);
+ INIT_LIST_HEAD(&client->event_list);
+ INIT_LIST_HEAD(&client->resource_list);
+ spin_lock_init(&client->lock);
+ init_waitqueue_head(&client->wait);
+
+ file->private_data = client;
+
+ spin_lock_irqsave(&device->card->lock, flags);
+ list_add_tail(&client->link, &device->client_list);
+ spin_unlock_irqrestore(&device->card->lock, flags);
+
+ return 0;
+}
+
+static void queue_event(struct client *client, struct event *event,
+ void *data0, size_t size0, void *data1, size_t size1)
+{
+ unsigned long flags;
+
+ event->v[0].data = data0;
+ event->v[0].size = size0;
+ event->v[1].data = data1;
+ event->v[1].size = size1;
+
+ spin_lock_irqsave(&client->lock, flags);
+
+ list_add_tail(&event->link, &client->event_list);
+ wake_up_interruptible(&client->wait);
+
+ spin_unlock_irqrestore(&client->lock, flags);
+}
+
+static int
+dequeue_event(struct client *client, char __user *buffer, size_t count)
+{
+ unsigned long flags;
+ struct event *event;
+ size_t size, total;
+ int i, retval;
+
+ retval = wait_event_interruptible(client->wait,
+ !list_empty(&client->event_list) ||
+ fw_device_is_shutdown(client->device));
+ if (retval < 0)
+ return retval;
+
+ if (list_empty(&client->event_list) &&
+ fw_device_is_shutdown(client->device))
+ return -ENODEV;
+
+ spin_lock_irqsave(&client->lock, flags);
+ event = container_of(client->event_list.next, struct event, link);
+ list_del(&event->link);
+ spin_unlock_irqrestore(&client->lock, flags);
+
+ total = 0;
+ for (i = 0; i < ARRAY_SIZE(event->v) && total < count; i++) {
+ size = min(event->v[i].size, count - total);
+ if (copy_to_user(buffer + total, event->v[i].data, size)) {
+ retval = -EFAULT;
+ goto out;
+ }
+ total += size;
+ }
+ retval = total;
+
+ out:
+ kfree(event);
+
+ return retval;
+}
+
+static ssize_t
+fw_device_op_read(struct file *file,
+ char __user *buffer, size_t count, loff_t *offset)
+{
+ struct client *client = file->private_data;
+
+ return dequeue_event(client, buffer, count);
+}
+
+static void
+fill_bus_reset_event(struct fw_cdev_event_bus_reset *event,
+ struct client *client)
+{
+ struct fw_card *card = client->device->card;
+
+ event->closure = client->bus_reset_closure;
+ event->type = FW_CDEV_EVENT_BUS_RESET;
+ event->node_id = client->device->node_id;
+ event->local_node_id = card->local_node->node_id;
+ event->bm_node_id = 0; /* FIXME: We don't track the BM. */
+ event->irm_node_id = card->irm_node->node_id;
+ event->root_node_id = card->root_node->node_id;
+ event->generation = card->generation;
+}
+
+static void
+for_each_client(struct fw_device *device,
+ void (*callback)(struct client *client))
+{
+ struct fw_card *card = device->card;
+ struct client *c;
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->lock, flags);
+
+ list_for_each_entry(c, &device->client_list, link)
+ callback(c);
+
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+static void
+queue_bus_reset_event(struct client *client)
+{
+ struct bus_reset *bus_reset;
+
+ bus_reset = kzalloc(sizeof *bus_reset, GFP_ATOMIC);
+ if (bus_reset == NULL) {
+ fw_notify("Out of memory when allocating bus reset event\n");
+ return;
+ }
+
+ fill_bus_reset_event(&bus_reset->reset, client);
+
+ queue_event(client, &bus_reset->event,
+ &bus_reset->reset, sizeof bus_reset->reset, NULL, 0);
+}
+
+void fw_device_cdev_update(struct fw_device *device)
+{
+ for_each_client(device, queue_bus_reset_event);
+}
+
+static void wake_up_client(struct client *client)
+{
+ wake_up_interruptible(&client->wait);
+}
+
+void fw_device_cdev_remove(struct fw_device *device)
+{
+ for_each_client(device, wake_up_client);
+}
+
+static int ioctl_get_info(struct client *client, void *buffer)
+{
+ struct fw_cdev_get_info *get_info = buffer;
+ struct fw_cdev_event_bus_reset bus_reset;
+
+ client->version = get_info->version;
+ get_info->version = FW_CDEV_VERSION;
+
+ if (get_info->rom != 0) {
+ void __user *uptr = u64_to_uptr(get_info->rom);
+ size_t want = get_info->rom_length;
+ size_t have = client->device->config_rom_length * 4;
+
+ if (copy_to_user(uptr, client->device->config_rom,
+ min(want, have)))
+ return -EFAULT;
+ }
+ get_info->rom_length = client->device->config_rom_length * 4;
+
+ client->bus_reset_closure = get_info->bus_reset_closure;
+ if (get_info->bus_reset != 0) {
+ void __user *uptr = u64_to_uptr(get_info->bus_reset);
+
+ fill_bus_reset_event(&bus_reset, client);
+ if (copy_to_user(uptr, &bus_reset, sizeof bus_reset))
+ return -EFAULT;
+ }
+
+ get_info->card = client->device->card->index;
+
+ return 0;
+}
+
+static void
+add_client_resource(struct client *client, struct client_resource *resource)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&client->lock, flags);
+ list_add_tail(&resource->link, &client->resource_list);
+ resource->handle = client->resource_handle++;
+ spin_unlock_irqrestore(&client->lock, flags);
+}
+
+static int
+release_client_resource(struct client *client, u32 handle,
+ struct client_resource **resource)
+{
+ struct client_resource *r;
+ unsigned long flags;
+
+ spin_lock_irqsave(&client->lock, flags);
+ list_for_each_entry(r, &client->resource_list, link) {
+ if (r->handle == handle) {
+ list_del(&r->link);
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&client->lock, flags);
+
+ if (&r->link == &client->resource_list)
+ return -EINVAL;
+
+ if (resource)
+ *resource = r;
+ else
+ r->release(client, r);
+
+ return 0;
+}
+
+static void
+release_transaction(struct client *client, struct client_resource *resource)
+{
+ struct response *response =
+ container_of(resource, struct response, resource);
+
+ fw_cancel_transaction(client->device->card, &response->transaction);
+}
+
+static void
+complete_transaction(struct fw_card *card, int rcode,
+ void *payload, size_t length, void *data)
+{
+ struct response *response = data;
+ struct client *client = response->client;
+ unsigned long flags;
+
+ if (length < response->response.length)
+ response->response.length = length;
+ if (rcode == RCODE_COMPLETE)
+ memcpy(response->response.data, payload,
+ response->response.length);
+
+ spin_lock_irqsave(&client->lock, flags);
+ list_del(&response->resource.link);
+ spin_unlock_irqrestore(&client->lock, flags);
+
+ response->response.type = FW_CDEV_EVENT_RESPONSE;
+ response->response.rcode = rcode;
+ queue_event(client, &response->event,
+ &response->response, sizeof response->response,
+ response->response.data, response->response.length);
+}
+
+static ssize_t ioctl_send_request(struct client *client, void *buffer)
+{
+ struct fw_device *device = client->device;
+ struct fw_cdev_send_request *request = buffer;
+ struct response *response;
+
+ /* What is the biggest size we'll accept, really? */
+ if (request->length > 4096)
+ return -EINVAL;
+
+ response = kmalloc(sizeof *response + request->length, GFP_KERNEL);
+ if (response == NULL)
+ return -ENOMEM;
+
+ response->client = client;
+ response->response.length = request->length;
+ response->response.closure = request->closure;
+
+ if (request->data &&
+ copy_from_user(response->response.data,
+ u64_to_uptr(request->data), request->length)) {
+ kfree(response);
+ return -EFAULT;
+ }
+
+ response->resource.release = release_transaction;
+ add_client_resource(client, &response->resource);
+
+ fw_send_request(device->card, &response->transaction,
+ request->tcode & 0x1f,
+ device->node->node_id,
+ request->generation,
+ device->node->max_speed,
+ request->offset,
+ response->response.data, request->length,
+ complete_transaction, response);
+
+ if (request->data)
+ return sizeof request + request->length;
+ else
+ return sizeof request;
+}
+
+struct address_handler {
+ struct fw_address_handler handler;
+ __u64 closure;
+ struct client *client;
+ struct client_resource resource;
+};
+
+struct request {
+ struct fw_request *request;
+ void *data;
+ size_t length;
+ struct client_resource resource;
+};
+
+struct request_event {
+ struct event event;
+ struct fw_cdev_event_request request;
+};
+
+static void
+release_request(struct client *client, struct client_resource *resource)
+{
+ struct request *request =
+ container_of(resource, struct request, resource);
+
+ fw_send_response(client->device->card, request->request,
+ RCODE_CONFLICT_ERROR);
+ kfree(request);
+}
+
+static void
+handle_request(struct fw_card *card, struct fw_request *r,
+ int tcode, int destination, int source,
+ int generation, int speed,
+ unsigned long long offset,
+ void *payload, size_t length, void *callback_data)
+{
+ struct address_handler *handler = callback_data;
+ struct request *request;
+ struct request_event *e;
+ struct client *client = handler->client;
+
+ request = kmalloc(sizeof *request, GFP_ATOMIC);
+ e = kmalloc(sizeof *e, GFP_ATOMIC);
+ if (request == NULL || e == NULL) {
+ kfree(request);
+ kfree(e);
+ fw_send_response(card, r, RCODE_CONFLICT_ERROR);
+ return;
+ }
+
+ request->request = r;
+ request->data = payload;
+ request->length = length;
+
+ request->resource.release = release_request;
+ add_client_resource(client, &request->resource);
+
+ e->request.type = FW_CDEV_EVENT_REQUEST;
+ e->request.tcode = tcode;
+ e->request.offset = offset;
+ e->request.length = length;
+ e->request.handle = request->resource.handle;
+ e->request.closure = handler->closure;
+
+ queue_event(client, &e->event,
+ &e->request, sizeof e->request, payload, length);
+}
+
+static void
+release_address_handler(struct client *client,
+ struct client_resource *resource)
+{
+ struct address_handler *handler =
+ container_of(resource, struct address_handler, resource);
+
+ fw_core_remove_address_handler(&handler->handler);
+ kfree(handler);
+}
+
+static int ioctl_allocate(struct client *client, void *buffer)
+{
+ struct fw_cdev_allocate *request = buffer;
+ struct address_handler *handler;
+ struct fw_address_region region;
+
+ handler = kmalloc(sizeof *handler, GFP_KERNEL);
+ if (handler == NULL)
+ return -ENOMEM;
+
+ region.start = request->offset;
+ region.end = request->offset + request->length;
+ handler->handler.length = request->length;
+ handler->handler.address_callback = handle_request;
+ handler->handler.callback_data = handler;
+ handler->closure = request->closure;
+ handler->client = client;
+
+ if (fw_core_add_address_handler(&handler->handler, ®ion) < 0) {
+ kfree(handler);
+ return -EBUSY;
+ }
+
+ handler->resource.release = release_address_handler;
+ add_client_resource(client, &handler->resource);
+ request->handle = handler->resource.handle;
+
+ return 0;
+}
+
+static int ioctl_deallocate(struct client *client, void *buffer)
+{
+ struct fw_cdev_deallocate *request = buffer;
+
+ return release_client_resource(client, request->handle, NULL);
+}
+
+static int ioctl_send_response(struct client *client, void *buffer)
+{
+ struct fw_cdev_send_response *request = buffer;
+ struct client_resource *resource;
+ struct request *r;
+
+ if (release_client_resource(client, request->handle, &resource) < 0)
+ return -EINVAL;
+ r = container_of(resource, struct request, resource);
+ if (request->length < r->length)
+ r->length = request->length;
+ if (copy_from_user(r->data, u64_to_uptr(request->data), r->length))
+ return -EFAULT;
+
+ fw_send_response(client->device->card, r->request, request->rcode);
+ kfree(r);
+
+ return 0;
+}
+
+static int ioctl_initiate_bus_reset(struct client *client, void *buffer)
+{
+ struct fw_cdev_initiate_bus_reset *request = buffer;
+ int short_reset;
+
+ short_reset = (request->type == FW_CDEV_SHORT_RESET);
+
+ return fw_core_initiate_bus_reset(client->device->card, short_reset);
+}
+
+struct descriptor {
+ struct fw_descriptor d;
+ struct client_resource resource;
+ u32 data[0];
+};
+
+static void release_descriptor(struct client *client,
+ struct client_resource *resource)
+{
+ struct descriptor *descriptor =
+ container_of(resource, struct descriptor, resource);
+
+ fw_core_remove_descriptor(&descriptor->d);
+ kfree(descriptor);
+}
+
+static int ioctl_add_descriptor(struct client *client, void *buffer)
+{
+ struct fw_cdev_add_descriptor *request = buffer;
+ struct descriptor *descriptor;
+ int retval;
+
+ if (request->length > 256)
+ return -EINVAL;
+
+ descriptor =
+ kmalloc(sizeof *descriptor + request->length * 4, GFP_KERNEL);
+ if (descriptor == NULL)
+ return -ENOMEM;
+
+ if (copy_from_user(descriptor->data,
+ u64_to_uptr(request->data), request->length * 4)) {
+ kfree(descriptor);
+ return -EFAULT;
+ }
+
+ descriptor->d.length = request->length;
+ descriptor->d.immediate = request->immediate;
+ descriptor->d.key = request->key;
+ descriptor->d.data = descriptor->data;
+
+ retval = fw_core_add_descriptor(&descriptor->d);
+ if (retval < 0) {
+ kfree(descriptor);
+ return retval;
+ }
+
+ descriptor->resource.release = release_descriptor;
+ add_client_resource(client, &descriptor->resource);
+ request->handle = descriptor->resource.handle;
+
+ return 0;
+}
+
+static int ioctl_remove_descriptor(struct client *client, void *buffer)
+{
+ struct fw_cdev_remove_descriptor *request = buffer;
+
+ return release_client_resource(client, request->handle, NULL);
+}
+
+static void
+iso_callback(struct fw_iso_context *context, u32 cycle,
+ size_t header_length, void *header, void *data)
+{
+ struct client *client = data;
+ struct iso_interrupt *interrupt;
+
+ interrupt = kzalloc(sizeof *interrupt + header_length, GFP_ATOMIC);
+ if (interrupt == NULL)
+ return;
+
+ interrupt->interrupt.type = FW_CDEV_EVENT_ISO_INTERRUPT;
+ interrupt->interrupt.closure = client->iso_closure;
+ interrupt->interrupt.cycle = cycle;
+ interrupt->interrupt.header_length = header_length;
+ memcpy(interrupt->interrupt.header, header, header_length);
+ queue_event(client, &interrupt->event,
+ &interrupt->interrupt,
+ sizeof interrupt->interrupt + header_length, NULL, 0);
+}
+
+static int ioctl_create_iso_context(struct client *client, void *buffer)
+{
+ struct fw_cdev_create_iso_context *request = buffer;
+
+ if (request->channel > 63)
+ return -EINVAL;
+
+ switch (request->type) {
+ case FW_ISO_CONTEXT_RECEIVE:
+ if (request->header_size < 4 || (request->header_size & 3))
+ return -EINVAL;
+
+ break;
+
+ case FW_ISO_CONTEXT_TRANSMIT:
+ if (request->speed > SCODE_3200)
+ return -EINVAL;
+
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ client->iso_closure = request->closure;
+ client->iso_context = fw_iso_context_create(client->device->card,
+ request->type,
+ request->channel,
+ request->speed,
+ request->header_size,
+ iso_callback, client);
+ if (IS_ERR(client->iso_context))
+ return PTR_ERR(client->iso_context);
+
+ /* We only support one context at this time. */
+ request->handle = 0;
+
+ return 0;
+}
+
+static int ioctl_queue_iso(struct client *client, void *buffer)
+{
+ struct fw_cdev_queue_iso *request = buffer;
+ struct fw_cdev_iso_packet __user *p, *end, *next;
+ struct fw_iso_context *ctx = client->iso_context;
+ unsigned long payload, buffer_end, header_length;
+ int count;
+ struct {
+ struct fw_iso_packet packet;
+ u8 header[256];
+ } u;
+
+ if (ctx == NULL || request->handle != 0)
+ return -EINVAL;
+
+ /* If the user passes a non-NULL data pointer, has mmap()'ed
+ * the iso buffer, and the pointer points inside the buffer,
+ * we setup the payload pointers accordingly. Otherwise we
+ * set them both to 0, which will still let packets with
+ * payload_length == 0 through. In other words, if no packets
+ * use the indirect payload, the iso buffer need not be mapped
+ * and the request->data pointer is ignored.*/
+
+ payload = (unsigned long)request->data - client->vm_start;
+ buffer_end = client->buffer.page_count << PAGE_SHIFT;
+ if (request->data == 0 || client->buffer.pages == NULL ||
+ payload >= buffer_end) {
+ payload = 0;
+ buffer_end = 0;
+ }
+
+ if (!access_ok(VERIFY_READ, request->packets, request->size))
+ return -EFAULT;
+
+ p = (struct fw_cdev_iso_packet __user *)u64_to_uptr(request->packets);
+ end = (void __user *)p + request->size;
+ count = 0;
+ while (p < end) {
+ if (__copy_from_user(&u.packet, p, sizeof *p))
+ return -EFAULT;
+
+ if (ctx->type == FW_ISO_CONTEXT_TRANSMIT) {
+ header_length = u.packet.header_length;
+ } else {
+ /* We require that header_length is a multiple of
+ * the fixed header size, ctx->header_size */
+ if (ctx->header_size == 0) {
+ if (u.packet.header_length > 0)
+ return -EINVAL;
+ } else if (u.packet.header_length % ctx->header_size != 0) {
+ return -EINVAL;
+ }
+ header_length = 0;
+ }
+
+ next = (struct fw_cdev_iso_packet __user *)
+ &p->header[header_length / 4];
+ if (next > end)
+ return -EINVAL;
+ if (__copy_from_user
+ (u.packet.header, p->header, header_length))
+ return -EFAULT;
+ if (u.packet.skip && ctx->type == FW_ISO_CONTEXT_TRANSMIT &&
+ u.packet.header_length + u.packet.payload_length > 0)
+ return -EINVAL;
+ if (payload + u.packet.payload_length > buffer_end)
+ return -EINVAL;
+
+ if (fw_iso_context_queue(ctx, &u.packet,
+ &client->buffer, payload))
+ break;
+
+ p = next;
+ payload += u.packet.payload_length;
+ count++;
+ }
+
+ request->size -= uptr_to_u64(p) - request->packets;
+ request->packets = uptr_to_u64(p);
+ request->data = client->vm_start + payload;
+
+ return count;
+}
+
+static int ioctl_start_iso(struct client *client, void *buffer)
+{
+ struct fw_cdev_start_iso *request = buffer;
+
+ if (request->handle != 0)
+ return -EINVAL;
+ if (client->iso_context->type == FW_ISO_CONTEXT_RECEIVE) {
+ if (request->tags == 0 || request->tags > 15)
+ return -EINVAL;
+
+ if (request->sync > 15)
+ return -EINVAL;
+ }
+
+ return fw_iso_context_start(client->iso_context, request->cycle,
+ request->sync, request->tags);
+}
+
+static int ioctl_stop_iso(struct client *client, void *buffer)
+{
+ struct fw_cdev_stop_iso *request = buffer;
+
+ if (request->handle != 0)
+ return -EINVAL;
+
+ return fw_iso_context_stop(client->iso_context);
+}
+
+static int (* const ioctl_handlers[])(struct client *client, void *buffer) = {
+ ioctl_get_info,
+ ioctl_send_request,
+ ioctl_allocate,
+ ioctl_deallocate,
+ ioctl_send_response,
+ ioctl_initiate_bus_reset,
+ ioctl_add_descriptor,
+ ioctl_remove_descriptor,
+ ioctl_create_iso_context,
+ ioctl_queue_iso,
+ ioctl_start_iso,
+ ioctl_stop_iso,
+};
+
+static int
+dispatch_ioctl(struct client *client, unsigned int cmd, void __user *arg)
+{
+ char buffer[256];
+ int retval;
+
+ if (_IOC_TYPE(cmd) != '#' ||
+ _IOC_NR(cmd) >= ARRAY_SIZE(ioctl_handlers))
+ return -EINVAL;
+
+ if (_IOC_DIR(cmd) & _IOC_WRITE) {
+ if (_IOC_SIZE(cmd) > sizeof buffer ||
+ copy_from_user(buffer, arg, _IOC_SIZE(cmd)))
+ return -EFAULT;
+ }
+
+ retval = ioctl_handlers[_IOC_NR(cmd)](client, buffer);
+ if (retval < 0)
+ return retval;
+
+ if (_IOC_DIR(cmd) & _IOC_READ) {
+ if (_IOC_SIZE(cmd) > sizeof buffer ||
+ copy_to_user(arg, buffer, _IOC_SIZE(cmd)))
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+static long
+fw_device_op_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct client *client = file->private_data;
+
+ return dispatch_ioctl(client, cmd, (void __user *) arg);
+}
+
+#ifdef CONFIG_COMPAT
+static long
+fw_device_op_compat_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct client *client = file->private_data;
+
+ return dispatch_ioctl(client, cmd, compat_ptr(arg));
+}
+#endif
+
+static int fw_device_op_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct client *client = file->private_data;
+ enum dma_data_direction direction;
+ unsigned long size;
+ int page_count, retval;
+
+ /* FIXME: We could support multiple buffers, but we don't. */
+ if (client->buffer.pages != NULL)
+ return -EBUSY;
+
+ if (!(vma->vm_flags & VM_SHARED))
+ return -EINVAL;
+
+ if (vma->vm_start & ~PAGE_MASK)
+ return -EINVAL;
+
+ client->vm_start = vma->vm_start;
+ size = vma->vm_end - vma->vm_start;
+ page_count = size >> PAGE_SHIFT;
+ if (size & ~PAGE_MASK)
+ return -EINVAL;
+
+ if (vma->vm_flags & VM_WRITE)
+ direction = DMA_TO_DEVICE;
+ else
+ direction = DMA_FROM_DEVICE;
+
+ retval = fw_iso_buffer_init(&client->buffer, client->device->card,
+ page_count, direction);
+ if (retval < 0)
+ return retval;
+
+ retval = fw_iso_buffer_map(&client->buffer, vma);
+ if (retval < 0)
+ fw_iso_buffer_destroy(&client->buffer, client->device->card);
+
+ return retval;
+}
+
+static int fw_device_op_release(struct inode *inode, struct file *file)
+{
+ struct client *client = file->private_data;
+ struct event *e, *next_e;
+ struct client_resource *r, *next_r;
+ unsigned long flags;
+
+ if (client->buffer.pages)
+ fw_iso_buffer_destroy(&client->buffer, client->device->card);
+
+ if (client->iso_context)
+ fw_iso_context_destroy(client->iso_context);
+
+ list_for_each_entry_safe(r, next_r, &client->resource_list, link)
+ r->release(client, r);
+
+ /* FIXME: We should wait for the async tasklets to stop
+ * running before freeing the memory. */
+
+ list_for_each_entry_safe(e, next_e, &client->event_list, link)
+ kfree(e);
+
+ spin_lock_irqsave(&client->device->card->lock, flags);
+ list_del(&client->link);
+ spin_unlock_irqrestore(&client->device->card->lock, flags);
+
+ fw_device_put(client->device);
+ kfree(client);
+
+ return 0;
+}
+
+static unsigned int fw_device_op_poll(struct file *file, poll_table * pt)
+{
+ struct client *client = file->private_data;
+ unsigned int mask = 0;
+
+ poll_wait(file, &client->wait, pt);
+
+ if (fw_device_is_shutdown(client->device))
+ mask |= POLLHUP | POLLERR;
+ if (!list_empty(&client->event_list))
+ mask |= POLLIN | POLLRDNORM;
+
+ return mask;
+}
+
+const struct file_operations fw_device_ops = {
+ .owner = THIS_MODULE,
+ .open = fw_device_op_open,
+ .read = fw_device_op_read,
+ .unlocked_ioctl = fw_device_op_ioctl,
+ .poll = fw_device_op_poll,
+ .release = fw_device_op_release,
+ .mmap = fw_device_op_mmap,
+
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = fw_device_op_compat_ioctl,
+#endif
+};
+++ /dev/null
-/* -*- c-basic-offset: 8 -*-
- *
- * fw-device-cdev.c - Char device for device raw access
- *
- * Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/wait.h>
-#include <linux/errno.h>
-#include <linux/device.h>
-#include <linux/vmalloc.h>
-#include <linux/poll.h>
-#include <linux/delay.h>
-#include <linux/mm.h>
-#include <linux/idr.h>
-#include <linux/compat.h>
-#include <asm/uaccess.h>
-#include "fw-transaction.h"
-#include "fw-topology.h"
-#include "fw-device.h"
-#include "fw-device-cdev.h"
-
-/* dequeue_event() just kfree()'s the event, so the event has to be
- * the first field in the struct. */
-
-struct client;
-struct client_resource {
- struct list_head link;
- void (*release)(struct client *client, struct client_resource *r);
- u32 handle;
-};
-
-struct event {
- struct { void *data; size_t size; } v[2];
- struct list_head link;
-};
-
-struct bus_reset {
- struct event event;
- struct fw_cdev_event_bus_reset reset;
-};
-
-struct response {
- struct event event;
- struct fw_transaction transaction;
- struct client *client;
- struct client_resource resource;
- struct fw_cdev_event_response response;
-};
-
-struct iso_interrupt {
- struct event event;
- struct fw_cdev_event_iso_interrupt interrupt;
-};
-
-struct client {
- u32 version;
- struct fw_device *device;
- spinlock_t lock;
- u32 resource_handle;
- struct list_head resource_list;
- struct list_head event_list;
- wait_queue_head_t wait;
- u64 bus_reset_closure;
-
- struct fw_iso_context *iso_context;
- u64 iso_closure;
- struct fw_iso_buffer buffer;
- unsigned long vm_start;
-
- struct list_head link;
-};
-
-static inline void __user *
-u64_to_uptr(__u64 value)
-{
- return (void __user *)(unsigned long)value;
-}
-
-static inline __u64
-uptr_to_u64(void __user *ptr)
-{
- return (__u64)(unsigned long)ptr;
-}
-
-static int fw_device_op_open(struct inode *inode, struct file *file)
-{
- struct fw_device *device;
- struct client *client;
- unsigned long flags;
-
- device = fw_device_from_devt(inode->i_rdev);
- if (device == NULL)
- return -ENODEV;
-
- client = kzalloc(sizeof *client, GFP_KERNEL);
- if (client == NULL)
- return -ENOMEM;
-
- client->device = fw_device_get(device);
- INIT_LIST_HEAD(&client->event_list);
- INIT_LIST_HEAD(&client->resource_list);
- spin_lock_init(&client->lock);
- init_waitqueue_head(&client->wait);
-
- file->private_data = client;
-
- spin_lock_irqsave(&device->card->lock, flags);
- list_add_tail(&client->link, &device->client_list);
- spin_unlock_irqrestore(&device->card->lock, flags);
-
- return 0;
-}
-
-static void queue_event(struct client *client, struct event *event,
- void *data0, size_t size0, void *data1, size_t size1)
-{
- unsigned long flags;
-
- event->v[0].data = data0;
- event->v[0].size = size0;
- event->v[1].data = data1;
- event->v[1].size = size1;
-
- spin_lock_irqsave(&client->lock, flags);
-
- list_add_tail(&event->link, &client->event_list);
- wake_up_interruptible(&client->wait);
-
- spin_unlock_irqrestore(&client->lock, flags);
-}
-
-static int
-dequeue_event(struct client *client, char __user *buffer, size_t count)
-{
- unsigned long flags;
- struct event *event;
- size_t size, total;
- int i, retval;
-
- retval = wait_event_interruptible(client->wait,
- !list_empty(&client->event_list) ||
- fw_device_is_shutdown(client->device));
- if (retval < 0)
- return retval;
-
- if (list_empty(&client->event_list) &&
- fw_device_is_shutdown(client->device))
- return -ENODEV;
-
- spin_lock_irqsave(&client->lock, flags);
- event = container_of(client->event_list.next, struct event, link);
- list_del(&event->link);
- spin_unlock_irqrestore(&client->lock, flags);
-
- total = 0;
- for (i = 0; i < ARRAY_SIZE(event->v) && total < count; i++) {
- size = min(event->v[i].size, count - total);
- if (copy_to_user(buffer + total, event->v[i].data, size)) {
- retval = -EFAULT;
- goto out;
- }
- total += size;
- }
- retval = total;
-
- out:
- kfree(event);
-
- return retval;
-}
-
-static ssize_t
-fw_device_op_read(struct file *file,
- char __user *buffer, size_t count, loff_t *offset)
-{
- struct client *client = file->private_data;
-
- return dequeue_event(client, buffer, count);
-}
-
-static void
-fill_bus_reset_event(struct fw_cdev_event_bus_reset *event,
- struct client *client)
-{
- struct fw_card *card = client->device->card;
-
- event->closure = client->bus_reset_closure;
- event->type = FW_CDEV_EVENT_BUS_RESET;
- event->node_id = client->device->node_id;
- event->local_node_id = card->local_node->node_id;
- event->bm_node_id = 0; /* FIXME: We don't track the BM. */
- event->irm_node_id = card->irm_node->node_id;
- event->root_node_id = card->root_node->node_id;
- event->generation = card->generation;
-}
-
-static void
-for_each_client(struct fw_device *device,
- void (*callback)(struct client *client))
-{
- struct fw_card *card = device->card;
- struct client *c;
- unsigned long flags;
-
- spin_lock_irqsave(&card->lock, flags);
-
- list_for_each_entry(c, &device->client_list, link)
- callback(c);
-
- spin_unlock_irqrestore(&card->lock, flags);
-}
-
-static void
-queue_bus_reset_event(struct client *client)
-{
- struct bus_reset *bus_reset;
-
- bus_reset = kzalloc(sizeof *bus_reset, GFP_ATOMIC);
- if (bus_reset == NULL) {
- fw_notify("Out of memory when allocating bus reset event\n");
- return;
- }
-
- fill_bus_reset_event(&bus_reset->reset, client);
-
- queue_event(client, &bus_reset->event,
- &bus_reset->reset, sizeof bus_reset->reset, NULL, 0);
-}
-
-void fw_device_cdev_update(struct fw_device *device)
-{
- for_each_client(device, queue_bus_reset_event);
-}
-
-static void wake_up_client(struct client *client)
-{
- wake_up_interruptible(&client->wait);
-}
-
-void fw_device_cdev_remove(struct fw_device *device)
-{
- for_each_client(device, wake_up_client);
-}
-
-static int ioctl_get_info(struct client *client, void *buffer)
-{
- struct fw_cdev_get_info *get_info = buffer;
- struct fw_cdev_event_bus_reset bus_reset;
-
- client->version = get_info->version;
- get_info->version = FW_CDEV_VERSION;
-
- if (get_info->rom != 0) {
- void __user *uptr = u64_to_uptr(get_info->rom);
- size_t want = get_info->rom_length;
- size_t have = client->device->config_rom_length * 4;
-
- if (copy_to_user(uptr, client->device->config_rom,
- min(want, have)))
- return -EFAULT;
- }
- get_info->rom_length = client->device->config_rom_length * 4;
-
- client->bus_reset_closure = get_info->bus_reset_closure;
- if (get_info->bus_reset != 0) {
- void __user *uptr = u64_to_uptr(get_info->bus_reset);
-
- fill_bus_reset_event(&bus_reset, client);
- if (copy_to_user(uptr, &bus_reset, sizeof bus_reset))
- return -EFAULT;
- }
-
- get_info->card = client->device->card->index;
-
- return 0;
-}
-
-static void
-add_client_resource(struct client *client, struct client_resource *resource)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&client->lock, flags);
- list_add_tail(&resource->link, &client->resource_list);
- resource->handle = client->resource_handle++;
- spin_unlock_irqrestore(&client->lock, flags);
-}
-
-static int
-release_client_resource(struct client *client, u32 handle,
- struct client_resource **resource)
-{
- struct client_resource *r;
- unsigned long flags;
-
- spin_lock_irqsave(&client->lock, flags);
- list_for_each_entry(r, &client->resource_list, link) {
- if (r->handle == handle) {
- list_del(&r->link);
- break;
- }
- }
- spin_unlock_irqrestore(&client->lock, flags);
-
- if (&r->link == &client->resource_list)
- return -EINVAL;
-
- if (resource)
- *resource = r;
- else
- r->release(client, r);
-
- return 0;
-}
-
-static void
-release_transaction(struct client *client, struct client_resource *resource)
-{
- struct response *response =
- container_of(resource, struct response, resource);
-
- fw_cancel_transaction(client->device->card, &response->transaction);
-}
-
-static void
-complete_transaction(struct fw_card *card, int rcode,
- void *payload, size_t length, void *data)
-{
- struct response *response = data;
- struct client *client = response->client;
- unsigned long flags;
-
- if (length < response->response.length)
- response->response.length = length;
- if (rcode == RCODE_COMPLETE)
- memcpy(response->response.data, payload,
- response->response.length);
-
- spin_lock_irqsave(&client->lock, flags);
- list_del(&response->resource.link);
- spin_unlock_irqrestore(&client->lock, flags);
-
- response->response.type = FW_CDEV_EVENT_RESPONSE;
- response->response.rcode = rcode;
- queue_event(client, &response->event,
- &response->response, sizeof response->response,
- response->response.data, response->response.length);
-}
-
-static ssize_t ioctl_send_request(struct client *client, void *buffer)
-{
- struct fw_device *device = client->device;
- struct fw_cdev_send_request *request = buffer;
- struct response *response;
-
- /* What is the biggest size we'll accept, really? */
- if (request->length > 4096)
- return -EINVAL;
-
- response = kmalloc(sizeof *response + request->length, GFP_KERNEL);
- if (response == NULL)
- return -ENOMEM;
-
- response->client = client;
- response->response.length = request->length;
- response->response.closure = request->closure;
-
- if (request->data &&
- copy_from_user(response->response.data,
- u64_to_uptr(request->data), request->length)) {
- kfree(response);
- return -EFAULT;
- }
-
- response->resource.release = release_transaction;
- add_client_resource(client, &response->resource);
-
- fw_send_request(device->card, &response->transaction,
- request->tcode & 0x1f,
- device->node->node_id,
- request->generation,
- device->node->max_speed,
- request->offset,
- response->response.data, request->length,
- complete_transaction, response);
-
- if (request->data)
- return sizeof request + request->length;
- else
- return sizeof request;
-}
-
-struct address_handler {
- struct fw_address_handler handler;
- __u64 closure;
- struct client *client;
- struct client_resource resource;
-};
-
-struct request {
- struct fw_request *request;
- void *data;
- size_t length;
- struct client_resource resource;
-};
-
-struct request_event {
- struct event event;
- struct fw_cdev_event_request request;
-};
-
-static void
-release_request(struct client *client, struct client_resource *resource)
-{
- struct request *request =
- container_of(resource, struct request, resource);
-
- fw_send_response(client->device->card, request->request,
- RCODE_CONFLICT_ERROR);
- kfree(request);
-}
-
-static void
-handle_request(struct fw_card *card, struct fw_request *r,
- int tcode, int destination, int source,
- int generation, int speed,
- unsigned long long offset,
- void *payload, size_t length, void *callback_data)
-{
- struct address_handler *handler = callback_data;
- struct request *request;
- struct request_event *e;
- struct client *client = handler->client;
-
- request = kmalloc(sizeof *request, GFP_ATOMIC);
- e = kmalloc(sizeof *e, GFP_ATOMIC);
- if (request == NULL || e == NULL) {
- kfree(request);
- kfree(e);
- fw_send_response(card, r, RCODE_CONFLICT_ERROR);
- return;
- }
-
- request->request = r;
- request->data = payload;
- request->length = length;
-
- request->resource.release = release_request;
- add_client_resource(client, &request->resource);
-
- e->request.type = FW_CDEV_EVENT_REQUEST;
- e->request.tcode = tcode;
- e->request.offset = offset;
- e->request.length = length;
- e->request.handle = request->resource.handle;
- e->request.closure = handler->closure;
-
- queue_event(client, &e->event,
- &e->request, sizeof e->request, payload, length);
-}
-
-static void
-release_address_handler(struct client *client,
- struct client_resource *resource)
-{
- struct address_handler *handler =
- container_of(resource, struct address_handler, resource);
-
- fw_core_remove_address_handler(&handler->handler);
- kfree(handler);
-}
-
-static int ioctl_allocate(struct client *client, void *buffer)
-{
- struct fw_cdev_allocate *request = buffer;
- struct address_handler *handler;
- struct fw_address_region region;
-
- handler = kmalloc(sizeof *handler, GFP_KERNEL);
- if (handler == NULL)
- return -ENOMEM;
-
- region.start = request->offset;
- region.end = request->offset + request->length;
- handler->handler.length = request->length;
- handler->handler.address_callback = handle_request;
- handler->handler.callback_data = handler;
- handler->closure = request->closure;
- handler->client = client;
-
- if (fw_core_add_address_handler(&handler->handler, ®ion) < 0) {
- kfree(handler);
- return -EBUSY;
- }
-
- handler->resource.release = release_address_handler;
- add_client_resource(client, &handler->resource);
- request->handle = handler->resource.handle;
-
- return 0;
-}
-
-static int ioctl_deallocate(struct client *client, void *buffer)
-{
- struct fw_cdev_deallocate *request = buffer;
-
- return release_client_resource(client, request->handle, NULL);
-}
-
-static int ioctl_send_response(struct client *client, void *buffer)
-{
- struct fw_cdev_send_response *request = buffer;
- struct client_resource *resource;
- struct request *r;
-
- if (release_client_resource(client, request->handle, &resource) < 0)
- return -EINVAL;
- r = container_of(resource, struct request, resource);
- if (request->length < r->length)
- r->length = request->length;
- if (copy_from_user(r->data, u64_to_uptr(request->data), r->length))
- return -EFAULT;
-
- fw_send_response(client->device->card, r->request, request->rcode);
- kfree(r);
-
- return 0;
-}
-
-static int ioctl_initiate_bus_reset(struct client *client, void *buffer)
-{
- struct fw_cdev_initiate_bus_reset *request = buffer;
- int short_reset;
-
- short_reset = (request->type == FW_CDEV_SHORT_RESET);
-
- return fw_core_initiate_bus_reset(client->device->card, short_reset);
-}
-
-struct descriptor {
- struct fw_descriptor d;
- struct client_resource resource;
- u32 data[0];
-};
-
-static void release_descriptor(struct client *client,
- struct client_resource *resource)
-{
- struct descriptor *descriptor =
- container_of(resource, struct descriptor, resource);
-
- fw_core_remove_descriptor(&descriptor->d);
- kfree(descriptor);
-}
-
-static int ioctl_add_descriptor(struct client *client, void *buffer)
-{
- struct fw_cdev_add_descriptor *request = buffer;
- struct descriptor *descriptor;
- int retval;
-
- if (request->length > 256)
- return -EINVAL;
-
- descriptor =
- kmalloc(sizeof *descriptor + request->length * 4, GFP_KERNEL);
- if (descriptor == NULL)
- return -ENOMEM;
-
- if (copy_from_user(descriptor->data,
- u64_to_uptr(request->data), request->length * 4)) {
- kfree(descriptor);
- return -EFAULT;
- }
-
- descriptor->d.length = request->length;
- descriptor->d.immediate = request->immediate;
- descriptor->d.key = request->key;
- descriptor->d.data = descriptor->data;
-
- retval = fw_core_add_descriptor(&descriptor->d);
- if (retval < 0) {
- kfree(descriptor);
- return retval;
- }
-
- descriptor->resource.release = release_descriptor;
- add_client_resource(client, &descriptor->resource);
- request->handle = descriptor->resource.handle;
-
- return 0;
-}
-
-static int ioctl_remove_descriptor(struct client *client, void *buffer)
-{
- struct fw_cdev_remove_descriptor *request = buffer;
-
- return release_client_resource(client, request->handle, NULL);
-}
-
-static void
-iso_callback(struct fw_iso_context *context, u32 cycle,
- size_t header_length, void *header, void *data)
-{
- struct client *client = data;
- struct iso_interrupt *interrupt;
-
- interrupt = kzalloc(sizeof *interrupt + header_length, GFP_ATOMIC);
- if (interrupt == NULL)
- return;
-
- interrupt->interrupt.type = FW_CDEV_EVENT_ISO_INTERRUPT;
- interrupt->interrupt.closure = client->iso_closure;
- interrupt->interrupt.cycle = cycle;
- interrupt->interrupt.header_length = header_length;
- memcpy(interrupt->interrupt.header, header, header_length);
- queue_event(client, &interrupt->event,
- &interrupt->interrupt,
- sizeof interrupt->interrupt + header_length, NULL, 0);
-}
-
-static int ioctl_create_iso_context(struct client *client, void *buffer)
-{
- struct fw_cdev_create_iso_context *request = buffer;
-
- if (request->channel > 63)
- return -EINVAL;
-
- switch (request->type) {
- case FW_ISO_CONTEXT_RECEIVE:
- if (request->header_size < 4 || (request->header_size & 3))
- return -EINVAL;
-
- break;
-
- case FW_ISO_CONTEXT_TRANSMIT:
- if (request->speed > SCODE_3200)
- return -EINVAL;
-
- break;
-
- default:
- return -EINVAL;
- }
-
- client->iso_closure = request->closure;
- client->iso_context = fw_iso_context_create(client->device->card,
- request->type,
- request->channel,
- request->speed,
- request->header_size,
- iso_callback, client);
- if (IS_ERR(client->iso_context))
- return PTR_ERR(client->iso_context);
-
- /* We only support one context at this time. */
- request->handle = 0;
-
- return 0;
-}
-
-static int ioctl_queue_iso(struct client *client, void *buffer)
-{
- struct fw_cdev_queue_iso *request = buffer;
- struct fw_cdev_iso_packet __user *p, *end, *next;
- struct fw_iso_context *ctx = client->iso_context;
- unsigned long payload, buffer_end, header_length;
- int count;
- struct {
- struct fw_iso_packet packet;
- u8 header[256];
- } u;
-
- if (ctx == NULL || request->handle != 0)
- return -EINVAL;
-
- /* If the user passes a non-NULL data pointer, has mmap()'ed
- * the iso buffer, and the pointer points inside the buffer,
- * we setup the payload pointers accordingly. Otherwise we
- * set them both to 0, which will still let packets with
- * payload_length == 0 through. In other words, if no packets
- * use the indirect payload, the iso buffer need not be mapped
- * and the request->data pointer is ignored.*/
-
- payload = (unsigned long)request->data - client->vm_start;
- buffer_end = client->buffer.page_count << PAGE_SHIFT;
- if (request->data == 0 || client->buffer.pages == NULL ||
- payload >= buffer_end) {
- payload = 0;
- buffer_end = 0;
- }
-
- if (!access_ok(VERIFY_READ, request->packets, request->size))
- return -EFAULT;
-
- p = (struct fw_cdev_iso_packet __user *)u64_to_uptr(request->packets);
- end = (void __user *)p + request->size;
- count = 0;
- while (p < end) {
- if (__copy_from_user(&u.packet, p, sizeof *p))
- return -EFAULT;
-
- if (ctx->type == FW_ISO_CONTEXT_TRANSMIT) {
- header_length = u.packet.header_length;
- } else {
- /* We require that header_length is a multiple of
- * the fixed header size, ctx->header_size */
- if (ctx->header_size == 0) {
- if (u.packet.header_length > 0)
- return -EINVAL;
- } else if (u.packet.header_length % ctx->header_size != 0) {
- return -EINVAL;
- }
- header_length = 0;
- }
-
- next = (struct fw_cdev_iso_packet __user *)
- &p->header[header_length / 4];
- if (next > end)
- return -EINVAL;
- if (__copy_from_user
- (u.packet.header, p->header, header_length))
- return -EFAULT;
- if (u.packet.skip && ctx->type == FW_ISO_CONTEXT_TRANSMIT &&
- u.packet.header_length + u.packet.payload_length > 0)
- return -EINVAL;
- if (payload + u.packet.payload_length > buffer_end)
- return -EINVAL;
-
- if (fw_iso_context_queue(ctx, &u.packet,
- &client->buffer, payload))
- break;
-
- p = next;
- payload += u.packet.payload_length;
- count++;
- }
-
- request->size -= uptr_to_u64(p) - request->packets;
- request->packets = uptr_to_u64(p);
- request->data = client->vm_start + payload;
-
- return count;
-}
-
-static int ioctl_start_iso(struct client *client, void *buffer)
-{
- struct fw_cdev_start_iso *request = buffer;
-
- if (request->handle != 0)
- return -EINVAL;
- if (client->iso_context->type == FW_ISO_CONTEXT_RECEIVE) {
- if (request->tags == 0 || request->tags > 15)
- return -EINVAL;
-
- if (request->sync > 15)
- return -EINVAL;
- }
-
- return fw_iso_context_start(client->iso_context, request->cycle,
- request->sync, request->tags);
-}
-
-static int ioctl_stop_iso(struct client *client, void *buffer)
-{
- struct fw_cdev_stop_iso *request = buffer;
-
- if (request->handle != 0)
- return -EINVAL;
-
- return fw_iso_context_stop(client->iso_context);
-}
-
-static int (* const ioctl_handlers[])(struct client *client, void *buffer) = {
- ioctl_get_info,
- ioctl_send_request,
- ioctl_allocate,
- ioctl_deallocate,
- ioctl_send_response,
- ioctl_initiate_bus_reset,
- ioctl_add_descriptor,
- ioctl_remove_descriptor,
- ioctl_create_iso_context,
- ioctl_queue_iso,
- ioctl_start_iso,
- ioctl_stop_iso,
-};
-
-static int
-dispatch_ioctl(struct client *client, unsigned int cmd, void __user *arg)
-{
- char buffer[256];
- int retval;
-
- if (_IOC_TYPE(cmd) != '#' ||
- _IOC_NR(cmd) >= ARRAY_SIZE(ioctl_handlers))
- return -EINVAL;
-
- if (_IOC_DIR(cmd) & _IOC_WRITE) {
- if (_IOC_SIZE(cmd) > sizeof buffer ||
- copy_from_user(buffer, arg, _IOC_SIZE(cmd)))
- return -EFAULT;
- }
-
- retval = ioctl_handlers[_IOC_NR(cmd)](client, buffer);
- if (retval < 0)
- return retval;
-
- if (_IOC_DIR(cmd) & _IOC_READ) {
- if (_IOC_SIZE(cmd) > sizeof buffer ||
- copy_to_user(arg, buffer, _IOC_SIZE(cmd)))
- return -EFAULT;
- }
-
- return 0;
-}
-
-static long
-fw_device_op_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- struct client *client = file->private_data;
-
- return dispatch_ioctl(client, cmd, (void __user *) arg);
-}
-
-#ifdef CONFIG_COMPAT
-static long
-fw_device_op_compat_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- struct client *client = file->private_data;
-
- return dispatch_ioctl(client, cmd, compat_ptr(arg));
-}
-#endif
-
-static int fw_device_op_mmap(struct file *file, struct vm_area_struct *vma)
-{
- struct client *client = file->private_data;
- enum dma_data_direction direction;
- unsigned long size;
- int page_count, retval;
-
- /* FIXME: We could support multiple buffers, but we don't. */
- if (client->buffer.pages != NULL)
- return -EBUSY;
-
- if (!(vma->vm_flags & VM_SHARED))
- return -EINVAL;
-
- if (vma->vm_start & ~PAGE_MASK)
- return -EINVAL;
-
- client->vm_start = vma->vm_start;
- size = vma->vm_end - vma->vm_start;
- page_count = size >> PAGE_SHIFT;
- if (size & ~PAGE_MASK)
- return -EINVAL;
-
- if (vma->vm_flags & VM_WRITE)
- direction = DMA_TO_DEVICE;
- else
- direction = DMA_FROM_DEVICE;
-
- retval = fw_iso_buffer_init(&client->buffer, client->device->card,
- page_count, direction);
- if (retval < 0)
- return retval;
-
- retval = fw_iso_buffer_map(&client->buffer, vma);
- if (retval < 0)
- fw_iso_buffer_destroy(&client->buffer, client->device->card);
-
- return retval;
-}
-
-static int fw_device_op_release(struct inode *inode, struct file *file)
-{
- struct client *client = file->private_data;
- struct event *e, *next_e;
- struct client_resource *r, *next_r;
- unsigned long flags;
-
- if (client->buffer.pages)
- fw_iso_buffer_destroy(&client->buffer, client->device->card);
-
- if (client->iso_context)
- fw_iso_context_destroy(client->iso_context);
-
- list_for_each_entry_safe(r, next_r, &client->resource_list, link)
- r->release(client, r);
-
- /* FIXME: We should wait for the async tasklets to stop
- * running before freeing the memory. */
-
- list_for_each_entry_safe(e, next_e, &client->event_list, link)
- kfree(e);
-
- spin_lock_irqsave(&client->device->card->lock, flags);
- list_del(&client->link);
- spin_unlock_irqrestore(&client->device->card->lock, flags);
-
- fw_device_put(client->device);
- kfree(client);
-
- return 0;
-}
-
-static unsigned int fw_device_op_poll(struct file *file, poll_table * pt)
-{
- struct client *client = file->private_data;
- unsigned int mask = 0;
-
- poll_wait(file, &client->wait, pt);
-
- if (fw_device_is_shutdown(client->device))
- mask |= POLLHUP | POLLERR;
- if (!list_empty(&client->event_list))
- mask |= POLLIN | POLLRDNORM;
-
- return mask;
-}
-
-const struct file_operations fw_device_ops = {
- .owner = THIS_MODULE,
- .open = fw_device_op_open,
- .read = fw_device_op_read,
- .unlocked_ioctl = fw_device_op_ioctl,
- .poll = fw_device_op_poll,
- .release = fw_device_op_release,
- .mmap = fw_device_op_mmap,
-
-#ifdef CONFIG_COMPAT
- .compat_ioctl = fw_device_op_compat_ioctl,
-#endif
-};
+++ /dev/null
-/* -*- c-basic-offset: 8 -*-
- *
- * fw-device-cdev.h -- Char device interface.
- *
- * Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#ifndef __fw_cdev_h
-#define __fw_cdev_h
-
-#include <asm/ioctl.h>
-#include <asm/types.h>
-
-#define TCODE_WRITE_QUADLET_REQUEST 0
-#define TCODE_WRITE_BLOCK_REQUEST 1
-#define TCODE_WRITE_RESPONSE 2
-#define TCODE_READ_QUADLET_REQUEST 4
-#define TCODE_READ_BLOCK_REQUEST 5
-#define TCODE_READ_QUADLET_RESPONSE 6
-#define TCODE_READ_BLOCK_RESPONSE 7
-#define TCODE_CYCLE_START 8
-#define TCODE_LOCK_REQUEST 9
-#define TCODE_STREAM_DATA 10
-#define TCODE_LOCK_RESPONSE 11
-
-#define TCODE_LOCK_MASK_SWAP 0x11
-#define TCODE_LOCK_COMPARE_SWAP 0x12
-#define TCODE_LOCK_FETCH_ADD 0x13
-#define TCODE_LOCK_LITTLE_ADD 0x14
-#define TCODE_LOCK_BOUNDED_ADD 0x15
-#define TCODE_LOCK_WRAP_ADD 0x16
-#define TCODE_LOCK_VENDOR_DEPENDENT 0x17
-
-#define RCODE_COMPLETE 0x0
-#define RCODE_CONFLICT_ERROR 0x4
-#define RCODE_DATA_ERROR 0x5
-#define RCODE_TYPE_ERROR 0x6
-#define RCODE_ADDRESS_ERROR 0x7
-
-#define RCODE_SEND_ERROR 0x10
-#define RCODE_CANCELLED 0x11
-#define RCODE_BUSY 0x12
-#define RCODE_GENERATION 0x13
-#define RCODE_NO_ACK 0x14
-
-#define SCODE_100 0x0
-#define SCODE_200 0x1
-#define SCODE_400 0x2
-#define SCODE_800 0x3
-#define SCODE_1600 0x4
-#define SCODE_3200 0x5
-
-#define FW_CDEV_EVENT_BUS_RESET 0x00
-#define FW_CDEV_EVENT_RESPONSE 0x01
-#define FW_CDEV_EVENT_REQUEST 0x02
-#define FW_CDEV_EVENT_ISO_INTERRUPT 0x03
-
-/* The 'closure' fields are for user space to use. Data passed in the
- * 'closure' field for a request will be returned in the corresponding
- * event. It's a 64-bit type so that it's a fixed size type big
- * enough to hold a pointer on all platforms. */
-
-struct fw_cdev_event_common {
- __u64 closure;
- __u32 type;
-};
-
-struct fw_cdev_event_bus_reset {
- __u64 closure;
- __u32 type;
- __u32 node_id;
- __u32 local_node_id;
- __u32 bm_node_id;
- __u32 irm_node_id;
- __u32 root_node_id;
- __u32 generation;
-};
-
-struct fw_cdev_event_response {
- __u64 closure;
- __u32 type;
- __u32 rcode;
- __u32 length;
- __u32 data[0];
-};
-
-struct fw_cdev_event_request {
- __u64 closure;
- __u32 type;
- __u32 tcode;
- __u64 offset;
- __u32 handle;
- __u32 length;
- __u32 data[0];
-};
-
-struct fw_cdev_event_iso_interrupt {
- __u64 closure;
- __u32 type;
- __u32 cycle;
- __u32 header_length; /* Length in bytes of following headers. */
- __u32 header[0];
-};
-
-union fw_cdev_event {
- struct fw_cdev_event_common common;
- struct fw_cdev_event_bus_reset bus_reset;
- struct fw_cdev_event_response response;
- struct fw_cdev_event_request request;
- struct fw_cdev_event_iso_interrupt iso_interrupt;
-};
-
-#define FW_CDEV_IOC_GET_INFO _IOWR('#', 0x00, struct fw_cdev_get_info)
-#define FW_CDEV_IOC_SEND_REQUEST _IOW('#', 0x01, struct fw_cdev_send_request)
-#define FW_CDEV_IOC_ALLOCATE _IOWR('#', 0x02, struct fw_cdev_allocate)
-#define FW_CDEV_IOC_DEALLOCATE _IOW('#', 0x03, struct fw_cdev_deallocate)
-#define FW_CDEV_IOC_SEND_RESPONSE _IOW('#', 0x04, struct fw_cdev_send_response)
-#define FW_CDEV_IOC_INITIATE_BUS_RESET _IOW('#', 0x05, struct fw_cdev_initiate_bus_reset)
-#define FW_CDEV_IOC_ADD_DESCRIPTOR _IOWR('#', 0x06, struct fw_cdev_add_descriptor)
-#define FW_CDEV_IOC_REMOVE_DESCRIPTOR _IOW('#', 0x07, struct fw_cdev_remove_descriptor)
-
-#define FW_CDEV_IOC_CREATE_ISO_CONTEXT _IOWR('#', 0x08, struct fw_cdev_create_iso_context)
-#define FW_CDEV_IOC_QUEUE_ISO _IOWR('#', 0x09, struct fw_cdev_queue_iso)
-#define FW_CDEV_IOC_START_ISO _IOW('#', 0x0a, struct fw_cdev_start_iso)
-#define FW_CDEV_IOC_STOP_ISO _IOW('#', 0x0b, struct fw_cdev_stop_iso)
-
-/* FW_CDEV_VERSION History
- *
- * 1 Feb 18, 2007: Initial version.
- */
-#define FW_CDEV_VERSION 1
-
-struct fw_cdev_get_info {
- /* The version field is just a running serial number. We
- * never break backwards compatibility. Userspace passes in
- * the version it expects and the kernel passes back the
- * highest version it can provide. Even if the structs in
- * this interface are extended in a later version, the kernel
- * will not copy back more data than what was present in the
- * interface version userspace expects. */
- __u32 version;
-
- /* If non-zero, at most rom_length bytes of config rom will be
- * copied into that user space address. In either case,
- * rom_length is updated with the actual length of the config
- * rom. */
- __u32 rom_length;
- __u64 rom;
-
- /* If non-zero, a fw_cdev_event_bus_reset struct will be
- * copied here with the current state of the bus. This does
- * not cause a bus reset to happen. The value of closure in
- * this and sub-sequent bus reset events is set to
- * bus_reset_closure. */
- __u64 bus_reset;
- __u64 bus_reset_closure;
-
- /* The index of the card this devices belongs to. */
- __u32 card;
-};
-
-struct fw_cdev_send_request {
- __u32 tcode;
- __u32 length;
- __u64 offset;
- __u64 closure;
- __u64 data;
- __u32 generation;
-};
-
-struct fw_cdev_send_response {
- __u32 rcode;
- __u32 length;
- __u64 data;
- __u32 handle;
-};
-
-struct fw_cdev_allocate {
- __u64 offset;
- __u64 closure;
- __u32 length;
- __u32 handle;
-};
-
-struct fw_cdev_deallocate {
- __u32 handle;
-};
-
-#define FW_CDEV_LONG_RESET 0
-#define FW_CDEV_SHORT_RESET 1
-
-struct fw_cdev_initiate_bus_reset {
- __u32 type;
-};
-
-struct fw_cdev_add_descriptor {
- __u32 immediate;
- __u32 key;
- __u64 data;
- __u32 length;
- __u32 handle;
-};
-
-struct fw_cdev_remove_descriptor {
- __u32 handle;
-};
-
-#define FW_CDEV_ISO_CONTEXT_TRANSMIT 0
-#define FW_CDEV_ISO_CONTEXT_RECEIVE 1
-
-#define FW_CDEV_ISO_CONTEXT_MATCH_TAG0 1
-#define FW_CDEV_ISO_CONTEXT_MATCH_TAG1 2
-#define FW_CDEV_ISO_CONTEXT_MATCH_TAG2 4
-#define FW_CDEV_ISO_CONTEXT_MATCH_TAG3 8
-#define FW_CDEV_ISO_CONTEXT_MATCH_ALL_TAGS 15
-
-struct fw_cdev_create_iso_context {
- __u32 type;
- __u32 header_size;
- __u32 channel;
- __u32 speed;
- __u64 closure;
- __u32 handle;
-};
-
-struct fw_cdev_iso_packet {
- __u16 payload_length; /* Length of indirect payload. */
- __u32 interrupt : 1; /* Generate interrupt on this packet */
- __u32 skip : 1; /* Set to not send packet at all. */
- __u32 tag : 2;
- __u32 sy : 4;
- __u32 header_length : 8; /* Length of immediate header. */
- __u32 header[0];
-};
-
-struct fw_cdev_queue_iso {
- __u64 packets;
- __u64 data;
- __u32 size;
- __u32 handle;
-};
-
-struct fw_cdev_start_iso {
- __s32 cycle;
- __u32 sync;
- __u32 tags;
- __u32 handle;
-};
-
-struct fw_cdev_stop_iso {
- __u32 handle;
-};
-
-#endif /* __fw_cdev_h */
--- /dev/null
+/* -*- c-basic-offset: 8 -*-
+ *
+ * fw-device-cdev.h -- Char device interface.
+ *
+ * Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __fw_cdev_h
+#define __fw_cdev_h
+
+#include <asm/ioctl.h>
+#include <asm/types.h>
+
+#define TCODE_WRITE_QUADLET_REQUEST 0
+#define TCODE_WRITE_BLOCK_REQUEST 1
+#define TCODE_WRITE_RESPONSE 2
+#define TCODE_READ_QUADLET_REQUEST 4
+#define TCODE_READ_BLOCK_REQUEST 5
+#define TCODE_READ_QUADLET_RESPONSE 6
+#define TCODE_READ_BLOCK_RESPONSE 7
+#define TCODE_CYCLE_START 8
+#define TCODE_LOCK_REQUEST 9
+#define TCODE_STREAM_DATA 10
+#define TCODE_LOCK_RESPONSE 11
+
+#define TCODE_LOCK_MASK_SWAP 0x11
+#define TCODE_LOCK_COMPARE_SWAP 0x12
+#define TCODE_LOCK_FETCH_ADD 0x13
+#define TCODE_LOCK_LITTLE_ADD 0x14
+#define TCODE_LOCK_BOUNDED_ADD 0x15
+#define TCODE_LOCK_WRAP_ADD 0x16
+#define TCODE_LOCK_VENDOR_DEPENDENT 0x17
+
+#define RCODE_COMPLETE 0x0
+#define RCODE_CONFLICT_ERROR 0x4
+#define RCODE_DATA_ERROR 0x5
+#define RCODE_TYPE_ERROR 0x6
+#define RCODE_ADDRESS_ERROR 0x7
+
+#define RCODE_SEND_ERROR 0x10
+#define RCODE_CANCELLED 0x11
+#define RCODE_BUSY 0x12
+#define RCODE_GENERATION 0x13
+#define RCODE_NO_ACK 0x14
+
+#define SCODE_100 0x0
+#define SCODE_200 0x1
+#define SCODE_400 0x2
+#define SCODE_800 0x3
+#define SCODE_1600 0x4
+#define SCODE_3200 0x5
+
+#define FW_CDEV_EVENT_BUS_RESET 0x00
+#define FW_CDEV_EVENT_RESPONSE 0x01
+#define FW_CDEV_EVENT_REQUEST 0x02
+#define FW_CDEV_EVENT_ISO_INTERRUPT 0x03
+
+/* The 'closure' fields are for user space to use. Data passed in the
+ * 'closure' field for a request will be returned in the corresponding
+ * event. It's a 64-bit type so that it's a fixed size type big
+ * enough to hold a pointer on all platforms. */
+
+struct fw_cdev_event_common {
+ __u64 closure;
+ __u32 type;
+};
+
+struct fw_cdev_event_bus_reset {
+ __u64 closure;
+ __u32 type;
+ __u32 node_id;
+ __u32 local_node_id;
+ __u32 bm_node_id;
+ __u32 irm_node_id;
+ __u32 root_node_id;
+ __u32 generation;
+};
+
+struct fw_cdev_event_response {
+ __u64 closure;
+ __u32 type;
+ __u32 rcode;
+ __u32 length;
+ __u32 data[0];
+};
+
+struct fw_cdev_event_request {
+ __u64 closure;
+ __u32 type;
+ __u32 tcode;
+ __u64 offset;
+ __u32 handle;
+ __u32 length;
+ __u32 data[0];
+};
+
+struct fw_cdev_event_iso_interrupt {
+ __u64 closure;
+ __u32 type;
+ __u32 cycle;
+ __u32 header_length; /* Length in bytes of following headers. */
+ __u32 header[0];
+};
+
+union fw_cdev_event {
+ struct fw_cdev_event_common common;
+ struct fw_cdev_event_bus_reset bus_reset;
+ struct fw_cdev_event_response response;
+ struct fw_cdev_event_request request;
+ struct fw_cdev_event_iso_interrupt iso_interrupt;
+};
+
+#define FW_CDEV_IOC_GET_INFO _IOWR('#', 0x00, struct fw_cdev_get_info)
+#define FW_CDEV_IOC_SEND_REQUEST _IOW('#', 0x01, struct fw_cdev_send_request)
+#define FW_CDEV_IOC_ALLOCATE _IOWR('#', 0x02, struct fw_cdev_allocate)
+#define FW_CDEV_IOC_DEALLOCATE _IOW('#', 0x03, struct fw_cdev_deallocate)
+#define FW_CDEV_IOC_SEND_RESPONSE _IOW('#', 0x04, struct fw_cdev_send_response)
+#define FW_CDEV_IOC_INITIATE_BUS_RESET _IOW('#', 0x05, struct fw_cdev_initiate_bus_reset)
+#define FW_CDEV_IOC_ADD_DESCRIPTOR _IOWR('#', 0x06, struct fw_cdev_add_descriptor)
+#define FW_CDEV_IOC_REMOVE_DESCRIPTOR _IOW('#', 0x07, struct fw_cdev_remove_descriptor)
+
+#define FW_CDEV_IOC_CREATE_ISO_CONTEXT _IOWR('#', 0x08, struct fw_cdev_create_iso_context)
+#define FW_CDEV_IOC_QUEUE_ISO _IOWR('#', 0x09, struct fw_cdev_queue_iso)
+#define FW_CDEV_IOC_START_ISO _IOW('#', 0x0a, struct fw_cdev_start_iso)
+#define FW_CDEV_IOC_STOP_ISO _IOW('#', 0x0b, struct fw_cdev_stop_iso)
+
+/* FW_CDEV_VERSION History
+ *
+ * 1 Feb 18, 2007: Initial version.
+ */
+#define FW_CDEV_VERSION 1
+
+struct fw_cdev_get_info {
+ /* The version field is just a running serial number. We
+ * never break backwards compatibility. Userspace passes in
+ * the version it expects and the kernel passes back the
+ * highest version it can provide. Even if the structs in
+ * this interface are extended in a later version, the kernel
+ * will not copy back more data than what was present in the
+ * interface version userspace expects. */
+ __u32 version;
+
+ /* If non-zero, at most rom_length bytes of config rom will be
+ * copied into that user space address. In either case,
+ * rom_length is updated with the actual length of the config
+ * rom. */
+ __u32 rom_length;
+ __u64 rom;
+
+ /* If non-zero, a fw_cdev_event_bus_reset struct will be
+ * copied here with the current state of the bus. This does
+ * not cause a bus reset to happen. The value of closure in
+ * this and sub-sequent bus reset events is set to
+ * bus_reset_closure. */
+ __u64 bus_reset;
+ __u64 bus_reset_closure;
+
+ /* The index of the card this devices belongs to. */
+ __u32 card;
+};
+
+struct fw_cdev_send_request {
+ __u32 tcode;
+ __u32 length;
+ __u64 offset;
+ __u64 closure;
+ __u64 data;
+ __u32 generation;
+};
+
+struct fw_cdev_send_response {
+ __u32 rcode;
+ __u32 length;
+ __u64 data;
+ __u32 handle;
+};
+
+struct fw_cdev_allocate {
+ __u64 offset;
+ __u64 closure;
+ __u32 length;
+ __u32 handle;
+};
+
+struct fw_cdev_deallocate {
+ __u32 handle;
+};
+
+#define FW_CDEV_LONG_RESET 0
+#define FW_CDEV_SHORT_RESET 1
+
+struct fw_cdev_initiate_bus_reset {
+ __u32 type;
+};
+
+struct fw_cdev_add_descriptor {
+ __u32 immediate;
+ __u32 key;
+ __u64 data;
+ __u32 length;
+ __u32 handle;
+};
+
+struct fw_cdev_remove_descriptor {
+ __u32 handle;
+};
+
+#define FW_CDEV_ISO_CONTEXT_TRANSMIT 0
+#define FW_CDEV_ISO_CONTEXT_RECEIVE 1
+
+#define FW_CDEV_ISO_CONTEXT_MATCH_TAG0 1
+#define FW_CDEV_ISO_CONTEXT_MATCH_TAG1 2
+#define FW_CDEV_ISO_CONTEXT_MATCH_TAG2 4
+#define FW_CDEV_ISO_CONTEXT_MATCH_TAG3 8
+#define FW_CDEV_ISO_CONTEXT_MATCH_ALL_TAGS 15
+
+struct fw_cdev_create_iso_context {
+ __u32 type;
+ __u32 header_size;
+ __u32 channel;
+ __u32 speed;
+ __u64 closure;
+ __u32 handle;
+};
+
+struct fw_cdev_iso_packet {
+ __u16 payload_length; /* Length of indirect payload. */
+ __u32 interrupt : 1; /* Generate interrupt on this packet */
+ __u32 skip : 1; /* Set to not send packet at all. */
+ __u32 tag : 2;
+ __u32 sy : 4;
+ __u32 header_length : 8; /* Length of immediate header. */
+ __u32 header[0];
+};
+
+struct fw_cdev_queue_iso {
+ __u64 packets;
+ __u64 data;
+ __u32 size;
+ __u32 handle;
+};
+
+struct fw_cdev_start_iso {
+ __s32 cycle;
+ __u32 sync;
+ __u32 tags;
+ __u32 handle;
+};
+
+struct fw_cdev_stop_iso {
+ __u32 handle;
+};
+
+#endif /* __fw_cdev_h */
projects / deliverable / linux.git / commitdiff
