#define BIB_CMC ((1) << 30)
#define BIB_IMC ((1) << 31)
-static u32 *
-generate_config_rom(struct fw_card *card, size_t *config_rom_length)
+static u32 *generate_config_rom(struct fw_card *card, size_t *config_rom_length)
{
struct fw_descriptor *desc;
static u32 config_rom[256];
return config_rom;
}
-static void
-update_config_roms(void)
+static void update_config_roms(void)
{
struct fw_card *card;
u32 *config_rom;
}
}
-int
-fw_core_add_descriptor(struct fw_descriptor *desc)
+int fw_core_add_descriptor(struct fw_descriptor *desc)
{
size_t i;
return 0;
}
-void
-fw_core_remove_descriptor(struct fw_descriptor *desc)
+void fw_core_remove_descriptor(struct fw_descriptor *desc)
{
mutex_lock(&card_mutex);
mutex_unlock(&card_mutex);
}
+static int set_broadcast_channel(struct device *dev, void *data)
+{
+ fw_device_set_broadcast_channel(fw_device(dev), (long)data);
+ return 0;
+}
+
+static void allocate_broadcast_channel(struct fw_card *card, int generation)
+{
+ int channel, bandwidth = 0;
+
+ fw_iso_resource_manage(card, generation, 1ULL << 31,
+ &channel, &bandwidth, true);
+ if (channel == 31) {
+ card->broadcast_channel_allocated = true;
+ device_for_each_child(card->device, (void *)(long)generation,
+ set_broadcast_channel);
+ }
+}
+
static const char gap_count_table[] = {
63, 5, 7, 8, 10, 13, 16, 18, 21, 24, 26, 29, 32, 35, 37, 40
};
-void
-fw_schedule_bm_work(struct fw_card *card, unsigned long delay)
+void fw_schedule_bm_work(struct fw_card *card, unsigned long delay)
{
int scheduled;
fw_card_put(card);
}
-static void
-fw_card_bm_work(struct work_struct *work)
+static void fw_card_bm_work(struct work_struct *work)
{
struct fw_card *card = container_of(work, struct fw_card, work.work);
struct fw_device *root_device;
- struct fw_node *root_node, *local_node;
+ struct fw_node *root_node;
unsigned long flags;
- int root_id, new_root_id, irm_id, gap_count, generation, grace, rcode;
+ int root_id, new_root_id, irm_id, local_id;
+ int gap_count, generation, grace, rcode;
bool do_reset = false;
+ bool root_device_is_running;
+ bool root_device_is_cmc;
__be32 lock_data[2];
spin_lock_irqsave(&card->lock, flags);
- local_node = card->local_node;
- root_node = card->root_node;
- if (local_node == NULL) {
+ if (card->local_node == NULL) {
spin_unlock_irqrestore(&card->lock, flags);
goto out_put_card;
}
- fw_node_get(local_node);
- fw_node_get(root_node);
generation = card->generation;
+ root_node = card->root_node;
+ fw_node_get(root_node);
root_device = root_node->data;
- if (root_device)
- fw_device_get(root_device);
- root_id = root_node->node_id;
- grace = time_after(jiffies, card->reset_jiffies + DIV_ROUND_UP(HZ, 10));
+ root_device_is_running = root_device &&
+ atomic_read(&root_device->state) == FW_DEVICE_RUNNING;
+ root_device_is_cmc = root_device && root_device->cmc;
+ root_id = root_node->node_id;
+ irm_id = card->irm_node->node_id;
+ local_id = card->local_node->node_id;
+
+ grace = time_after(jiffies, card->reset_jiffies + DIV_ROUND_UP(HZ, 8));
- if (card->bm_generation + 1 == generation ||
+ if (is_next_generation(generation, card->bm_generation) ||
(card->bm_generation != generation && grace)) {
/*
* This first step is to figure out who is IRM and
* next generation.
*/
- irm_id = card->irm_node->node_id;
if (!card->irm_node->link_on) {
- new_root_id = local_node->node_id;
+ new_root_id = local_id;
fw_notify("IRM has link off, making local node (%02x) root.\n",
new_root_id);
goto pick_me;
}
lock_data[0] = cpu_to_be32(0x3f);
- lock_data[1] = cpu_to_be32(local_node->node_id);
+ lock_data[1] = cpu_to_be32(local_id);
spin_unlock_irqrestore(&card->lock, flags);
goto out;
if (rcode == RCODE_COMPLETE &&
- lock_data[0] != cpu_to_be32(0x3f))
- /* Somebody else is BM, let them do the work. */
+ lock_data[0] != cpu_to_be32(0x3f)) {
+
+ /* Somebody else is BM. Only act as IRM. */
+ if (local_id == irm_id)
+ allocate_broadcast_channel(card, generation);
+
goto out;
+ }
spin_lock_irqsave(&card->lock, flags);
* do a bus reset and pick the local node as
* root, and thus, IRM.
*/
- new_root_id = local_node->node_id;
+ new_root_id = local_id;
fw_notify("BM lock failed, making local node (%02x) root.\n",
new_root_id);
goto pick_me;
}
} else if (card->bm_generation != generation) {
/*
- * OK, we weren't BM in the last generation, and it's
- * less than 100ms since last bus reset. Reschedule
- * this task 100ms from now.
+ * We weren't BM in the last generation, and the last
+ * bus reset is less than 125ms ago. Reschedule this job.
*/
spin_unlock_irqrestore(&card->lock, flags);
- fw_schedule_bm_work(card, DIV_ROUND_UP(HZ, 10));
+ fw_schedule_bm_work(card, DIV_ROUND_UP(HZ, 8));
goto out;
}
* Either link_on is false, or we failed to read the
* config rom. In either case, pick another root.
*/
- new_root_id = local_node->node_id;
- } else if (atomic_read(&root_device->state) != FW_DEVICE_RUNNING) {
+ new_root_id = local_id;
+ } else if (!root_device_is_running) {
/*
* If we haven't probed this device yet, bail out now
* and let's try again once that's done.
*/
spin_unlock_irqrestore(&card->lock, flags);
goto out;
- } else if (root_device->cmc) {
+ } else if (root_device_is_cmc) {
/*
* FIXME: I suppose we should set the cmstr bit in the
* STATE_CLEAR register of this node, as described in
* successfully read the config rom, but it's not
* cycle master capable.
*/
- new_root_id = local_node->node_id;
+ new_root_id = local_id;
}
pick_me:
card->index, new_root_id, gap_count);
fw_send_phy_config(card, new_root_id, generation, gap_count);
fw_core_initiate_bus_reset(card, 1);
+ /* Will allocate broadcast channel after the reset. */
+ } else {
+ if (local_id == irm_id)
+ allocate_broadcast_channel(card, generation);
}
+
out:
- if (root_device)
- fw_device_put(root_device);
fw_node_put(root_node);
- fw_node_put(local_node);
out_put_card:
fw_card_put(card);
}
-static void
-flush_timer_callback(unsigned long data)
+static void flush_timer_callback(unsigned long data)
{
struct fw_card *card = (struct fw_card *)data;
fw_flush_transactions(card);
}
-void
-fw_card_initialize(struct fw_card *card, const struct fw_card_driver *driver,
- struct device *device)
+void fw_card_initialize(struct fw_card *card,
+ const struct fw_card_driver *driver,
+ struct device *device)
{
static atomic_t index = ATOMIC_INIT(-1);
}
EXPORT_SYMBOL(fw_card_initialize);
-int
-fw_card_add(struct fw_card *card,
- u32 max_receive, u32 link_speed, u64 guid)
+int fw_card_add(struct fw_card *card,
+ u32 max_receive, u32 link_speed, u64 guid)
{
u32 *config_rom;
size_t length;
+ int ret;
card->max_receive = max_receive;
card->link_speed = link_speed;
list_add_tail(&card->link, &card_list);
mutex_unlock(&card_mutex);
- return card->driver->enable(card, config_rom, length);
+ ret = card->driver->enable(card, config_rom, length);
+ if (ret < 0) {
+ mutex_lock(&card_mutex);
+ list_del(&card->link);
+ mutex_unlock(&card_mutex);
+ }
+
+ return ret;
}
EXPORT_SYMBOL(fw_card_add);
* dummy driver just fails all IO.
*/
-static int
-dummy_enable(struct fw_card *card, u32 *config_rom, size_t length)
+static int dummy_enable(struct fw_card *card, u32 *config_rom, size_t length)
{
BUG();
return -1;
}
-static int
-dummy_update_phy_reg(struct fw_card *card, int address,
- int clear_bits, int set_bits)
+static int dummy_update_phy_reg(struct fw_card *card, int address,
+ int clear_bits, int set_bits)
{
return -ENODEV;
}
-static int
-dummy_set_config_rom(struct fw_card *card,
- u32 *config_rom, size_t length)
+static int dummy_set_config_rom(struct fw_card *card,
+ u32 *config_rom, size_t length)
{
/*
* We take the card out of card_list before setting the dummy
return -1;
}
-static void
-dummy_send_request(struct fw_card *card, struct fw_packet *packet)
+static void dummy_send_request(struct fw_card *card, struct fw_packet *packet)
{
packet->callback(packet, card, -ENODEV);
}
-static void
-dummy_send_response(struct fw_card *card, struct fw_packet *packet)
+static void dummy_send_response(struct fw_card *card, struct fw_packet *packet)
{
packet->callback(packet, card, -ENODEV);
}
-static int
-dummy_cancel_packet(struct fw_card *card, struct fw_packet *packet)
+static int dummy_cancel_packet(struct fw_card *card, struct fw_packet *packet)
{
return -ENOENT;
}
-static int
-dummy_enable_phys_dma(struct fw_card *card,
- int node_id, int generation)
+static int dummy_enable_phys_dma(struct fw_card *card,
+ int node_id, int generation)
{
return -ENODEV;
}
.enable_phys_dma = dummy_enable_phys_dma,
};
-void
-fw_card_release(struct kref *kref)
+void fw_card_release(struct kref *kref)
{
struct fw_card *card = container_of(kref, struct fw_card, kref);
complete(&card->done);
}
-void
-fw_core_remove_card(struct fw_card *card)
+void fw_core_remove_card(struct fw_card *card)
{
card->driver->update_phy_reg(card, 4,
PHY_LINK_ACTIVE | PHY_CONTENDER, 0);
fw_core_initiate_bus_reset(card, 1);
mutex_lock(&card_mutex);
- list_del(&card->link);
+ list_del_init(&card->link);
mutex_unlock(&card_mutex);
/* Set up the dummy driver. */
}
EXPORT_SYMBOL(fw_core_remove_card);
-int
-fw_core_initiate_bus_reset(struct fw_card *card, int short_reset)
+int fw_core_initiate_bus_reset(struct fw_card *card, int short_reset)
{
int reg = short_reset ? 5 : 1;
int bit = short_reset ? PHY_BUS_SHORT_RESET : PHY_BUS_RESET;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff