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-rw-r--r--drivers/firewire/core-card.c41
-rw-r--r--drivers/firewire/core-cdev.c50
-rw-r--r--drivers/firewire/net.c53
-rw-r--r--drivers/firewire/ohci.c17
4 files changed, 114 insertions, 47 deletions
diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c
index 7083bcc1b9c..5045156c531 100644
--- a/drivers/firewire/core-card.c
+++ b/drivers/firewire/core-card.c
@@ -57,6 +57,8 @@ static LIST_HEAD(descriptor_list);
static int descriptor_count;
static __be32 tmp_config_rom[256];
+/* ROM header, bus info block, root dir header, capabilities = 7 quadlets */
+static size_t config_rom_length = 1 + 4 + 1 + 1;
#define BIB_CRC(v) ((v) << 0)
#define BIB_CRC_LENGTH(v) ((v) << 16)
@@ -73,7 +75,7 @@ static __be32 tmp_config_rom[256];
#define BIB_CMC ((1) << 30)
#define BIB_IMC ((1) << 31)
-static size_t generate_config_rom(struct fw_card *card, __be32 *config_rom)
+static void generate_config_rom(struct fw_card *card, __be32 *config_rom)
{
struct fw_descriptor *desc;
int i, j, k, length;
@@ -130,23 +132,30 @@ static size_t generate_config_rom(struct fw_card *card, __be32 *config_rom)
for (i = 0; i < j; i += length + 1)
length = fw_compute_block_crc(config_rom + i);
- return j;
+ WARN_ON(j != config_rom_length);
}
static void update_config_roms(void)
{
struct fw_card *card;
- size_t length;
list_for_each_entry (card, &card_list, link) {
- length = generate_config_rom(card, tmp_config_rom);
- card->driver->set_config_rom(card, tmp_config_rom, length);
+ generate_config_rom(card, tmp_config_rom);
+ card->driver->set_config_rom(card, tmp_config_rom,
+ config_rom_length);
}
}
+static size_t required_space(struct fw_descriptor *desc)
+{
+ /* descriptor + entry into root dir + optional immediate entry */
+ return desc->length + 1 + (desc->immediate > 0 ? 1 : 0);
+}
+
int fw_core_add_descriptor(struct fw_descriptor *desc)
{
size_t i;
+ int ret;
/*
* Check descriptor is valid; the length of all blocks in the
@@ -162,15 +171,21 @@ int fw_core_add_descriptor(struct fw_descriptor *desc)
mutex_lock(&card_mutex);
- list_add_tail(&desc->link, &descriptor_list);
- descriptor_count++;
- if (desc->immediate > 0)
+ if (config_rom_length + required_space(desc) > 256) {
+ ret = -EBUSY;
+ } else {
+ list_add_tail(&desc->link, &descriptor_list);
+ config_rom_length += required_space(desc);
descriptor_count++;
- update_config_roms();
+ if (desc->immediate > 0)
+ descriptor_count++;
+ update_config_roms();
+ ret = 0;
+ }
mutex_unlock(&card_mutex);
- return 0;
+ return ret;
}
EXPORT_SYMBOL(fw_core_add_descriptor);
@@ -179,6 +194,7 @@ void fw_core_remove_descriptor(struct fw_descriptor *desc)
mutex_lock(&card_mutex);
list_del(&desc->link);
+ config_rom_length -= required_space(desc);
descriptor_count--;
if (desc->immediate > 0)
descriptor_count--;
@@ -428,7 +444,6 @@ EXPORT_SYMBOL(fw_card_initialize);
int fw_card_add(struct fw_card *card,
u32 max_receive, u32 link_speed, u64 guid)
{
- size_t length;
int ret;
card->max_receive = max_receive;
@@ -437,8 +452,8 @@ int fw_card_add(struct fw_card *card,
mutex_lock(&card_mutex);
- length = generate_config_rom(card, tmp_config_rom);
- ret = card->driver->enable(card, tmp_config_rom, length);
+ generate_config_rom(card, tmp_config_rom);
+ ret = card->driver->enable(card, tmp_config_rom, config_rom_length);
if (ret == 0)
list_add_tail(&card->link, &card_list);
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index 5538d5130f7..3c1ac0933d2 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -35,6 +35,7 @@
#include <linux/poll.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
+#include <linux/string.h>
#include <linux/time.h>
#include <linux/uaccess.h>
#include <linux/vmalloc.h>
@@ -595,13 +596,20 @@ static int ioctl_send_request(struct client *client, void *buffer)
client->device->max_speed);
}
+static inline bool is_fcp_request(struct fw_request *request)
+{
+ return request == NULL;
+}
+
static void release_request(struct client *client,
struct client_resource *resource)
{
struct inbound_transaction_resource *r = container_of(resource,
struct inbound_transaction_resource, resource);
- if (r->request)
+ if (is_fcp_request(r->request))
+ kfree(r->data);
+ else
fw_send_response(client->device->card, r->request,
RCODE_CONFLICT_ERROR);
kfree(r);
@@ -616,6 +624,7 @@ static void handle_request(struct fw_card *card, struct fw_request *request,
struct address_handler_resource *handler = callback_data;
struct inbound_transaction_resource *r;
struct inbound_transaction_event *e;
+ void *fcp_frame = NULL;
int ret;
r = kmalloc(sizeof(*r), GFP_ATOMIC);
@@ -627,6 +636,18 @@ static void handle_request(struct fw_card *card, struct fw_request *request,
r->data = payload;
r->length = length;
+ if (is_fcp_request(request)) {
+ /*
+ * FIXME: Let core-transaction.c manage a
+ * single reference-counted copy?
+ */
+ fcp_frame = kmemdup(payload, length, GFP_ATOMIC);
+ if (fcp_frame == NULL)
+ goto failed;
+
+ r->data = fcp_frame;
+ }
+
r->resource.release = release_request;
ret = add_client_resource(handler->client, &r->resource, GFP_ATOMIC);
if (ret < 0)
@@ -640,13 +661,15 @@ static void handle_request(struct fw_card *card, struct fw_request *request,
e->request.closure = handler->closure;
queue_event(handler->client, &e->event,
- &e->request, sizeof(e->request), payload, length);
+ &e->request, sizeof(e->request), r->data, length);
return;
failed:
kfree(r);
kfree(e);
- if (request)
+ kfree(fcp_frame);
+
+ if (!is_fcp_request(request))
fw_send_response(card, request, RCODE_CONFLICT_ERROR);
}
@@ -717,18 +740,17 @@ static int ioctl_send_response(struct client *client, void *buffer)
r = container_of(resource, struct inbound_transaction_resource,
resource);
- if (r->request) {
- if (request->length < r->length)
- r->length = request->length;
- if (copy_from_user(r->data, u64_to_uptr(request->data),
- r->length)) {
- ret = -EFAULT;
- kfree(r->request);
- goto out;
- }
- fw_send_response(client->device->card, r->request,
- request->rcode);
+ if (is_fcp_request(r->request))
+ goto out;
+
+ if (request->length < r->length)
+ r->length = request->length;
+ if (copy_from_user(r->data, u64_to_uptr(request->data), r->length)) {
+ ret = -EFAULT;
+ kfree(r->request);
+ goto out;
}
+ fw_send_response(client->device->card, r->request, request->rcode);
out:
kfree(r);
diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c
index cbaf420c36c..2d3dc7ded0a 100644
--- a/drivers/firewire/net.c
+++ b/drivers/firewire/net.c
@@ -893,20 +893,31 @@ static void fwnet_receive_broadcast(struct fw_iso_context *context,
static struct kmem_cache *fwnet_packet_task_cache;
+static void fwnet_free_ptask(struct fwnet_packet_task *ptask)
+{
+ dev_kfree_skb_any(ptask->skb);
+ kmem_cache_free(fwnet_packet_task_cache, ptask);
+}
+
static int fwnet_send_packet(struct fwnet_packet_task *ptask);
static void fwnet_transmit_packet_done(struct fwnet_packet_task *ptask)
{
- struct fwnet_device *dev;
+ struct fwnet_device *dev = ptask->dev;
unsigned long flags;
-
- dev = ptask->dev;
+ bool free;
spin_lock_irqsave(&dev->lock, flags);
- list_del(&ptask->pt_link);
- spin_unlock_irqrestore(&dev->lock, flags);
- ptask->outstanding_pkts--; /* FIXME access inside lock */
+ ptask->outstanding_pkts--;
+
+ /* Check whether we or the networking TX soft-IRQ is last user. */
+ free = (ptask->outstanding_pkts == 0 && !list_empty(&ptask->pt_link));
+
+ if (ptask->outstanding_pkts == 0)
+ list_del(&ptask->pt_link);
+
+ spin_unlock_irqrestore(&dev->lock, flags);
if (ptask->outstanding_pkts > 0) {
u16 dg_size;
@@ -951,10 +962,10 @@ static void fwnet_transmit_packet_done(struct fwnet_packet_task *ptask)
ptask->max_payload = skb->len + RFC2374_FRAG_HDR_SIZE;
}
fwnet_send_packet(ptask);
- } else {
- dev_kfree_skb_any(ptask->skb);
- kmem_cache_free(fwnet_packet_task_cache, ptask);
}
+
+ if (free)
+ fwnet_free_ptask(ptask);
}
static void fwnet_write_complete(struct fw_card *card, int rcode,
@@ -977,6 +988,7 @@ static int fwnet_send_packet(struct fwnet_packet_task *ptask)
unsigned tx_len;
struct rfc2734_header *bufhdr;
unsigned long flags;
+ bool free;
dev = ptask->dev;
tx_len = ptask->max_payload;
@@ -1022,12 +1034,16 @@ static int fwnet_send_packet(struct fwnet_packet_task *ptask)
generation, SCODE_100, 0ULL, ptask->skb->data,
tx_len + 8, fwnet_write_complete, ptask);
- /* FIXME race? */
spin_lock_irqsave(&dev->lock, flags);
- list_add_tail(&ptask->pt_link, &dev->broadcasted_list);
+
+ /* If the AT tasklet already ran, we may be last user. */
+ free = (ptask->outstanding_pkts == 0 && list_empty(&ptask->pt_link));
+ if (!free)
+ list_add_tail(&ptask->pt_link, &dev->broadcasted_list);
+
spin_unlock_irqrestore(&dev->lock, flags);
- return 0;
+ goto out;
}
fw_send_request(dev->card, &ptask->transaction,
@@ -1035,12 +1051,19 @@ static int fwnet_send_packet(struct fwnet_packet_task *ptask)
ptask->generation, ptask->speed, ptask->fifo_addr,
ptask->skb->data, tx_len, fwnet_write_complete, ptask);
- /* FIXME race? */
spin_lock_irqsave(&dev->lock, flags);
- list_add_tail(&ptask->pt_link, &dev->sent_list);
+
+ /* If the AT tasklet already ran, we may be last user. */
+ free = (ptask->outstanding_pkts == 0 && list_empty(&ptask->pt_link));
+ if (!free)
+ list_add_tail(&ptask->pt_link, &dev->sent_list);
+
spin_unlock_irqrestore(&dev->lock, flags);
dev->netdev->trans_start = jiffies;
+ out:
+ if (free)
+ fwnet_free_ptask(ptask);
return 0;
}
@@ -1298,6 +1321,8 @@ static netdev_tx_t fwnet_tx(struct sk_buff *skb, struct net_device *net)
spin_unlock_irqrestore(&dev->lock, flags);
ptask->max_payload = max_payload;
+ INIT_LIST_HEAD(&ptask->pt_link);
+
fwnet_send_packet(ptask);
return NETDEV_TX_OK;
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index f8a71397cf6..0f7c4bb978e 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -2136,11 +2136,6 @@ static int ohci_queue_iso_transmit(struct fw_iso_context *base,
u32 payload_index, payload_end_index, next_page_index;
int page, end_page, i, length, offset;
- /*
- * FIXME: Cycle lost behavior should be configurable: lose
- * packet, retransmit or terminate..
- */
-
p = packet;
payload_index = payload;
@@ -2170,6 +2165,14 @@ static int ohci_queue_iso_transmit(struct fw_iso_context *base,
if (!p->skip) {
d[0].control = cpu_to_le16(DESCRIPTOR_KEY_IMMEDIATE);
d[0].req_count = cpu_to_le16(8);
+ /*
+ * Link the skip address to this descriptor itself. This causes
+ * a context to skip a cycle whenever lost cycles or FIFO
+ * overruns occur, without dropping the data. The application
+ * should then decide whether this is an error condition or not.
+ * FIXME: Make the context's cycle-lost behaviour configurable?
+ */
+ d[0].branch_address = cpu_to_le32(d_bus | z);
header = (__le32 *) &d[1];
header[0] = cpu_to_le32(IT_HEADER_SY(p->sy) |
@@ -2455,6 +2458,7 @@ static void ohci_pmac_off(struct pci_dev *dev)
#define PCI_VENDOR_ID_AGERE PCI_VENDOR_ID_ATT
#define PCI_DEVICE_ID_AGERE_FW643 0x5901
+#define PCI_DEVICE_ID_TI_TSB43AB23 0x8024
static int __devinit pci_probe(struct pci_dev *dev,
const struct pci_device_id *ent)
@@ -2523,7 +2527,8 @@ static int __devinit pci_probe(struct pci_dev *dev,
#if !defined(CONFIG_X86_32)
/* dual-buffer mode is broken with descriptor addresses above 2G */
if (dev->vendor == PCI_VENDOR_ID_TI &&
- dev->device == PCI_DEVICE_ID_TI_TSB43AB22)
+ (dev->device == PCI_DEVICE_ID_TI_TSB43AB22 ||
+ dev->device == PCI_DEVICE_ID_TI_TSB43AB23))
ohci->use_dualbuffer = false;
#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-02 00:52:54 +0000