firewire: Add a bus reset event type for fw-device-cdev.

Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Kristian Høgsberg 2007-03-07 12:12:41 -05:00 committed by Stefan Richter
parent 1da0c93b31
commit 97bd9efa5a
4 changed files with 75 additions and 3 deletions

View File

@ -50,6 +50,11 @@ struct event {
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;
@ -75,6 +80,8 @@ struct client {
struct fw_iso_context *iso_context;
struct fw_iso_buffer buffer;
unsigned long vm_start;
struct list_head link;
};
static inline void __user *
@ -93,6 +100,7 @@ static int fw_device_op_open(struct inode *inode, struct file *file)
{
struct fw_device *device;
struct client *client;
unsigned long flags;
device = container_of(inode->i_cdev, struct fw_device, cdev);
@ -110,6 +118,10 @@ static int fw_device_op_open(struct inode *inode, struct file *file)
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;
}
@ -177,6 +189,45 @@ fw_device_op_read(struct file *file,
return dequeue_event(client, buffer, count);
}
static void
queue_bus_reset_event(struct client *client)
{
struct bus_reset *bus_reset;
struct fw_device *device = client->device;
struct fw_card *card = device->card;
bus_reset = kzalloc(sizeof *bus_reset, GFP_ATOMIC);
if (bus_reset == NULL) {
fw_notify("Out of memory when allocating bus reset event\n");
return;
}
bus_reset->reset.type = FW_CDEV_EVENT_BUS_RESET;
bus_reset->reset.node_id = device->node_id;
bus_reset->reset.local_node_id = card->local_node->node_id;
bus_reset->reset.bm_node_id = 0; /* FIXME: We don't track the BM. */
bus_reset->reset.irm_node_id = card->irm_node->node_id;
bus_reset->reset.root_node_id = card->root_node->node_id;
bus_reset->reset.generation = card->generation;
queue_event(client, &bus_reset->event,
&bus_reset->reset, sizeof bus_reset->reset, NULL, 0);
}
void fw_device_cdev_update(struct fw_device *device)
{
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)
queue_bus_reset_event(c);
spin_unlock_irqrestore(&card->lock, flags);
}
static int ioctl_config_rom(struct client *client, void __user *arg)
{
struct fw_cdev_get_config_rom rom;
@ -633,6 +684,7 @@ static int fw_device_op_release(struct inode *inode, struct file *file)
struct client *client = file->private_data;
struct address_handler *h, *next;
struct request *r, *next_r;
unsigned long flags;
if (client->buffer.pages)
fw_iso_buffer_destroy(&client->buffer, client->device->card);
@ -657,6 +709,10 @@ static int fw_device_op_release(struct inode *inode, struct file *file)
while (!list_empty(&client->event_list))
dequeue_event(client, NULL, 0);
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);

View File

@ -58,15 +58,26 @@
#define SCODE_1600 0x4
#define SCODE_3200 0x5
#define FW_CDEV_EVENT_RESPONSE 0x00
#define FW_CDEV_EVENT_REQUEST 0x01
#define FW_CDEV_EVENT_ISO_INTERRUPT 0x02
#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_bus_reset {
__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 {
__u32 type;
__u32 rcode;

View File

@ -535,6 +535,7 @@ static void fw_device_update(struct work_struct *work)
struct fw_device *device =
container_of(work, struct fw_device, work.work);
fw_device_cdev_update(device);
device_for_each_child(&device->device, NULL, update_unit);
}
@ -564,6 +565,7 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event)
device->node = fw_node_get(node);
device->node_id = node->node_id;
device->generation = card->generation;
INIT_LIST_HEAD(&device->client_list);
/* Set the node data to point back to this device so
* FW_NODE_UPDATED callbacks can update the node_id

View File

@ -40,6 +40,7 @@ struct fw_device {
struct fw_card *card;
struct device device;
struct cdev cdev;
struct list_head client_list;
__be32 *config_rom;
size_t config_rom_length;
int config_rom_retries;
@ -56,6 +57,8 @@ struct fw_device *fw_device_get(struct fw_device *device);
void fw_device_put(struct fw_device *device);
int fw_device_enable_phys_dma(struct fw_device *device);
void fw_device_cdev_update(struct fw_device *device);
struct fw_unit {
struct device device;
u32 *directory;