diff options
-rw-r--r-- | drivers/firewire/core-card.c | 1 | ||||
-rw-r--r-- | drivers/firewire/core-cdev.c | 73 | ||||
-rw-r--r-- | drivers/firewire/core-transaction.c | 5 | ||||
-rw-r--r-- | drivers/firewire/core.h | 2 | ||||
-rw-r--r-- | drivers/firewire/ohci.c | 3 | ||||
-rw-r--r-- | include/linux/firewire-cdev.h | 39 | ||||
-rw-r--r-- | include/linux/firewire.h | 3 |
7 files changed, 111 insertions, 15 deletions
diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c index 0c312c4bb4b..6d1cfae6aad 100644 --- a/drivers/firewire/core-card.c +++ b/drivers/firewire/core-card.c @@ -500,6 +500,7 @@ void fw_card_initialize(struct fw_card *card, kref_init(&card->kref); init_completion(&card->done); INIT_LIST_HEAD(&card->transaction_list); + INIT_LIST_HEAD(&card->phy_receiver_list); spin_lock_init(&card->lock); card->local_node = NULL; diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c index f9571992648..0425dd5dfcd 100644 --- a/drivers/firewire/core-cdev.c +++ b/drivers/firewire/core-cdev.c @@ -69,6 +69,9 @@ struct client { struct fw_iso_buffer buffer; unsigned long vm_start; + struct list_head phy_receiver_link; + u64 phy_receiver_closure; + struct list_head link; struct kref kref; }; @@ -201,6 +204,11 @@ struct outbound_phy_packet_event { struct fw_cdev_event_phy_packet phy_packet; }; +struct inbound_phy_packet_event { + struct event event; + struct fw_cdev_event_phy_packet phy_packet; +}; + static inline void __user *u64_to_uptr(__u64 value) { return (void __user *)(unsigned long)value; @@ -236,6 +244,7 @@ static int fw_device_op_open(struct inode *inode, struct file *file) idr_init(&client->resource_idr); INIT_LIST_HEAD(&client->event_list); init_waitqueue_head(&client->wait); + INIT_LIST_HEAD(&client->phy_receiver_link); kref_init(&client->kref); file->private_data = client; @@ -357,7 +366,7 @@ static void queue_bus_reset_event(struct client *client) e = kzalloc(sizeof(*e), GFP_KERNEL); if (e == NULL) { - fw_notify("Out of memory when allocating bus reset event\n"); + fw_notify("Out of memory when allocating event\n"); return; } @@ -404,6 +413,7 @@ union ioctl_arg { struct fw_cdev_send_stream_packet send_stream_packet; struct fw_cdev_get_cycle_timer2 get_cycle_timer2; struct fw_cdev_send_phy_packet send_phy_packet; + struct fw_cdev_receive_phy_packets receive_phy_packets; }; static int ioctl_get_info(struct client *client, union ioctl_arg *arg) @@ -671,9 +681,10 @@ static void handle_request(struct fw_card *card, struct fw_request *request, r = kmalloc(sizeof(*r), GFP_ATOMIC); e = kmalloc(sizeof(*e), GFP_ATOMIC); - if (r == NULL || e == NULL) + if (r == NULL || e == NULL) { + fw_notify("Out of memory when allocating event\n"); goto failed; - + } r->card = card; r->request = request; r->data = payload; @@ -902,9 +913,10 @@ static void iso_callback(struct fw_iso_context *context, u32 cycle, struct iso_interrupt_event *e; e = kmalloc(sizeof(*e) + header_length, GFP_ATOMIC); - if (e == NULL) + if (e == NULL) { + fw_notify("Out of memory when allocating event\n"); return; - + } e->interrupt.type = FW_CDEV_EVENT_ISO_INTERRUPT; e->interrupt.closure = client->iso_closure; e->interrupt.cycle = cycle; @@ -1447,6 +1459,52 @@ static int ioctl_send_phy_packet(struct client *client, union ioctl_arg *arg) return 0; } +static int ioctl_receive_phy_packets(struct client *client, union ioctl_arg *arg) +{ + struct fw_cdev_receive_phy_packets *a = &arg->receive_phy_packets; + struct fw_card *card = client->device->card; + + /* Access policy: Allow this ioctl only on local nodes' device files. */ + if (!client->device->is_local) + return -ENOSYS; + + spin_lock_irq(&card->lock); + + list_move_tail(&client->phy_receiver_link, &card->phy_receiver_list); + client->phy_receiver_closure = a->closure; + + spin_unlock_irq(&card->lock); + + return 0; +} + +void fw_cdev_handle_phy_packet(struct fw_card *card, struct fw_packet *p) +{ + struct client *client; + struct inbound_phy_packet_event *e; + unsigned long flags; + + spin_lock_irqsave(&card->lock, flags); + + list_for_each_entry(client, &card->phy_receiver_list, phy_receiver_link) { + e = kmalloc(sizeof(*e) + 8, GFP_ATOMIC); + if (e == NULL) { + fw_notify("Out of memory when allocating event\n"); + break; + } + e->phy_packet.closure = client->phy_receiver_closure; + e->phy_packet.type = FW_CDEV_EVENT_PHY_PACKET_RECEIVED; + e->phy_packet.rcode = RCODE_COMPLETE; + e->phy_packet.length = 8; + e->phy_packet.data[0] = p->header[1]; + e->phy_packet.data[1] = p->header[2]; + queue_event(client, &e->event, + &e->phy_packet, sizeof(e->phy_packet) + 8, NULL, 0); + } + + spin_unlock_irqrestore(&card->lock, flags); +} + static int (* const ioctl_handlers[])(struct client *, union ioctl_arg *) = { [0x00] = ioctl_get_info, [0x01] = ioctl_send_request, @@ -1470,6 +1528,7 @@ static int (* const ioctl_handlers[])(struct client *, union ioctl_arg *) = { [0x13] = ioctl_send_stream_packet, [0x14] = ioctl_get_cycle_timer2, [0x15] = ioctl_send_phy_packet, + [0x16] = ioctl_receive_phy_packets, }; static int dispatch_ioctl(struct client *client, @@ -1577,6 +1636,10 @@ static int fw_device_op_release(struct inode *inode, struct file *file) struct client *client = file->private_data; struct event *event, *next_event; + spin_lock_irq(&client->device->card->lock); + list_del(&client->phy_receiver_link); + spin_unlock_irq(&client->device->card->lock); + mutex_lock(&client->device->client_list_mutex); list_del(&client->link); mutex_unlock(&client->device->client_list_mutex); diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c index e2e4dc624fb..6f225cacbc3 100644 --- a/drivers/firewire/core-transaction.c +++ b/drivers/firewire/core-transaction.c @@ -883,6 +883,11 @@ void fw_core_handle_request(struct fw_card *card, struct fw_packet *p) if (p->ack != ACK_PENDING && p->ack != ACK_COMPLETE) return; + if (TCODE_IS_LINK_INTERNAL(HEADER_GET_TCODE(p->header[0]))) { + fw_cdev_handle_phy_packet(card, p); + return; + } + request = allocate_request(card, p); if (request == NULL) { /* FIXME: send statically allocated busy packet. */ diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h index ff6c9092200..3102b6b6343 100644 --- a/drivers/firewire/core.h +++ b/drivers/firewire/core.h @@ -128,6 +128,7 @@ extern const struct file_operations fw_device_ops; void fw_device_cdev_update(struct fw_device *device); void fw_device_cdev_remove(struct fw_device *device); +void fw_cdev_handle_phy_packet(struct fw_card *card, struct fw_packet *p); /* -device */ @@ -214,6 +215,7 @@ static inline bool is_next_generation(int new_generation, int old_generation) #define TCODE_IS_READ_REQUEST(tcode) (((tcode) & ~1) == 4) #define TCODE_IS_BLOCK_PACKET(tcode) (((tcode) & 1) != 0) +#define TCODE_IS_LINK_INTERNAL(tcode) ((tcode) == 0xe) #define TCODE_IS_REQUEST(tcode) (((tcode) & 2) == 0) #define TCODE_IS_RESPONSE(tcode) (((tcode) & 2) != 0) #define TCODE_HAS_REQUEST_DATA(tcode) (((tcode) & 12) != 4) diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index bb6a92bc9e6..08afccc6633 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -1759,10 +1759,9 @@ static int ohci_enable(struct fw_card *card, OHCI1394_HCControl_noByteSwapData); reg_write(ohci, OHCI1394_SelfIDBuffer, ohci->self_id_bus); - reg_write(ohci, OHCI1394_LinkControlClear, - OHCI1394_LinkControl_rcvPhyPkt); reg_write(ohci, OHCI1394_LinkControlSet, OHCI1394_LinkControl_rcvSelfID | + OHCI1394_LinkControl_rcvPhyPkt | OHCI1394_LinkControl_cycleTimerEnable | OHCI1394_LinkControl_cycleMaster); diff --git a/include/linux/firewire-cdev.h b/include/linux/firewire-cdev.h index 5bc051b9a01..b8740916079 100644 --- a/include/linux/firewire-cdev.h +++ b/include/linux/firewire-cdev.h @@ -35,6 +35,7 @@ /* available since kernel version 2.6.36 */ #define FW_CDEV_EVENT_REQUEST2 0x06 #define FW_CDEV_EVENT_PHY_PACKET_SENT 0x07 +#define FW_CDEV_EVENT_PHY_PACKET_RECEIVED 0x08 /** * struct fw_cdev_event_common - Common part of all fw_cdev_event_ types @@ -285,16 +286,24 @@ struct fw_cdev_event_iso_resource { }; /** - * struct fw_cdev_event_phy_packet - A PHY packet was transmitted - * @closure: See &fw_cdev_event_common; - * set by %FW_CDEV_IOC_SEND_PHY_PACKET ioctl - * @type: %FW_CDEV_EVENT_PHY_PACKET_SENT + * struct fw_cdev_event_phy_packet - A PHY packet was transmitted or received + * @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_SEND_PHY_PACKET + * or %FW_CDEV_IOC_RECEIVE_PHY_PACKETS ioctl + * @type: %FW_CDEV_EVENT_PHY_PACKET_SENT or %..._RECEIVED * @rcode: %RCODE_..., indicates success or failure of transmission + * @length: Data length in bytes + * @data: Incoming data + * + * If @type is %FW_CDEV_EVENT_PHY_PACKET_SENT, @length is 0 and @data empty. + * If @type is %FW_CDEV_EVENT_PHY_PACKET_RECEIVED, @length is 8 and @data + * consists of the two PHY packet quadlets, in host byte order. */ struct fw_cdev_event_phy_packet { __u64 closure; __u32 type; __u32 rcode; + __u32 length; + __u32 data[0]; }; /** @@ -308,7 +317,9 @@ struct fw_cdev_event_phy_packet { * @iso_resource: Valid if @common.type == * %FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED or * %FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED - * @phy_packet: Valid if @common.type == %FW_CDEV_EVENT_PHY_PACKET_SENT + * @phy_packet: Valid if @common.type == + * %FW_CDEV_EVENT_PHY_PACKET_SENT or + * %FW_CDEV_EVENT_PHY_PACKET_RECEIVED * * Convenience union for userspace use. Events could be read(2) into an * appropriately aligned char buffer and then cast to this union for further @@ -360,6 +371,7 @@ union fw_cdev_event { /* available since kernel version 2.6.36 */ #define FW_CDEV_IOC_SEND_PHY_PACKET _IOWR('#', 0x15, struct fw_cdev_send_phy_packet) +#define FW_CDEV_IOC_RECEIVE_PHY_PACKETS _IOW('#', 0x16, struct fw_cdev_receive_phy_packets) /* * ABI version history @@ -376,9 +388,9 @@ union fw_cdev_event { * - shared use and auto-response for FCP registers * 3 (2.6.34) - made &fw_cdev_get_cycle_timer reliable * - added %FW_CDEV_IOC_GET_CYCLE_TIMER2 - * 4 (2.6.36) - added %FW_CDEV_EVENT_REQUEST2, %FW_CDEV_EVENT_PHY_PACKET_SENT + * 4 (2.6.36) - added %FW_CDEV_EVENT_REQUEST2, %FW_CDEV_EVENT_PHY_PACKET_* * - implemented &fw_cdev_event_bus_reset.bm_node_id - * - added %FW_CDEV_IOC_SEND_PHY_PACKET + * - added %FW_CDEV_IOC_SEND_PHY_PACKET, _RECEIVE_PHY_PACKETS */ #define FW_CDEV_VERSION 3 /* Meaningless; don't use this macro. */ @@ -850,4 +862,17 @@ struct fw_cdev_send_phy_packet { __u32 generation; }; +/** + * struct fw_cdev_receive_phy_packets - start reception of PHY packets + * @closure: Passed back to userspace in phy packet events + * + * This ioctl activates issuing of %FW_CDEV_EVENT_PHY_PACKET_RECEIVED due to + * incoming PHY packets from any node on the same bus as the device. + * + * The ioctl is only permitted on device files which represent a local node. + */ +struct fw_cdev_receive_phy_packets { + __u64 closure; +}; + #endif /* _LINUX_FIREWIRE_CDEV_H */ diff --git a/include/linux/firewire.h b/include/linux/firewire.h index 0c38b8e9772..d974aa4a24c 100644 --- a/include/linux/firewire.h +++ b/include/linux/firewire.h @@ -111,9 +111,10 @@ struct fw_card { bool beta_repeaters_present; int index; - struct list_head link; + struct list_head phy_receiver_list; + struct delayed_work br_work; /* bus reset job */ bool br_short; |