diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-16 14:29:46 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-16 14:29:46 -0700 |
commit | f83b1e616f2f68b56b09b2f5116591981fee0c1c (patch) | |
tree | d8c423502853b46ec82c58ee31b695552579f7da | |
parent | 2f38d70fb4e97e7d00e12eaac45790cf6ebd7b22 (diff) | |
parent | 1e626fdcef61460dc75fe7377f38bb019722b848 (diff) |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
firewire: core: use more outbound tlabels
firewire: core: don't update Broadcast_Channel if RFC 2734 conditions aren't met
firewire: core: prepare for non-core children of card devices
firewire: core: include linux/uaccess.h instead of asm/uaccess.h
firewire: add parent-of-unit accessor
firewire: rename source files
firewire: reorganize header files
firewire: clean up includes
firewire: ohci: access bus_seconds atomically
firewire: also use vendor ID in root directory for driver matches
firewire: share device ID table type with ieee1394
firewire: core: add sysfs attribute for easier udev rules
firewire: core: check for missing struct update at build time, not run time
firewire: core: improve check for local node
-rw-r--r-- | drivers/firewire/Makefile | 8 | ||||
-rw-r--r-- | drivers/firewire/core-card.c (renamed from drivers/firewire/fw-card.c) | 25 | ||||
-rw-r--r-- | drivers/firewire/core-cdev.c (renamed from drivers/firewire/fw-cdev.c) | 13 | ||||
-rw-r--r-- | drivers/firewire/core-device.c (renamed from drivers/firewire/fw-device.c) | 154 | ||||
-rw-r--r-- | drivers/firewire/core-iso.c (renamed from drivers/firewire/fw-iso.c) | 6 | ||||
-rw-r--r-- | drivers/firewire/core-topology.c (renamed from drivers/firewire/fw-topology.c) | 24 | ||||
-rw-r--r-- | drivers/firewire/core-transaction.c (renamed from drivers/firewire/fw-transaction.c) | 42 | ||||
-rw-r--r-- | drivers/firewire/core.h | 293 | ||||
-rw-r--r-- | drivers/firewire/fw-device.h | 202 | ||||
-rw-r--r-- | drivers/firewire/fw-topology.h | 77 | ||||
-rw-r--r-- | drivers/firewire/fw-transaction.h | 446 | ||||
-rw-r--r-- | drivers/firewire/ohci.c (renamed from drivers/firewire/fw-ohci.c) | 19 | ||||
-rw-r--r-- | drivers/firewire/ohci.h (renamed from drivers/firewire/fw-ohci.h) | 6 | ||||
-rw-r--r-- | drivers/firewire/sbp2.c (renamed from drivers/firewire/fw-sbp2.c) | 58 | ||||
-rw-r--r-- | include/linux/firewire.h | 358 |
15 files changed, 902 insertions, 829 deletions
diff --git a/drivers/firewire/Makefile b/drivers/firewire/Makefile index a7c31e9039c1..bc3b9bf822bf 100644 --- a/drivers/firewire/Makefile +++ b/drivers/firewire/Makefile @@ -2,10 +2,10 @@ # Makefile for the Linux IEEE 1394 implementation # -firewire-core-y += fw-card.o fw-topology.o fw-transaction.o fw-iso.o \ - fw-device.o fw-cdev.o -firewire-ohci-y += fw-ohci.o -firewire-sbp2-y += fw-sbp2.o +firewire-core-y += core-card.o core-cdev.o core-device.o \ + core-iso.o core-topology.o core-transaction.o +firewire-ohci-y += ohci.o +firewire-sbp2-y += sbp2.o obj-$(CONFIG_FIREWIRE) += firewire-core.o obj-$(CONFIG_FIREWIRE_OHCI) += firewire-ohci.o diff --git a/drivers/firewire/fw-card.c b/drivers/firewire/core-card.c index 8b8c8c22f0fc..4c1be64fdddd 100644 --- a/drivers/firewire/fw-card.c +++ b/drivers/firewire/core-card.c @@ -16,18 +16,27 @@ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <linux/bug.h> #include <linux/completion.h> #include <linux/crc-itu-t.h> -#include <linux/delay.h> #include <linux/device.h> #include <linux/errno.h> +#include <linux/firewire.h> +#include <linux/firewire-constants.h> +#include <linux/jiffies.h> +#include <linux/kernel.h> #include <linux/kref.h> +#include <linux/list.h> #include <linux/module.h> #include <linux/mutex.h> +#include <linux/spinlock.h> +#include <linux/timer.h> +#include <linux/workqueue.h> -#include "fw-transaction.h" -#include "fw-topology.h" -#include "fw-device.h" +#include <asm/atomic.h> +#include <asm/byteorder.h> + +#include "core.h" int fw_compute_block_crc(u32 *block) { @@ -181,12 +190,6 @@ void fw_core_remove_descriptor(struct fw_descriptor *desc) 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; @@ -196,7 +199,7 @@ static void allocate_broadcast_channel(struct fw_card *card, int generation) if (channel == 31) { card->broadcast_channel_allocated = true; device_for_each_child(card->device, (void *)(long)generation, - set_broadcast_channel); + fw_device_set_broadcast_channel); } } diff --git a/drivers/firewire/fw-cdev.c b/drivers/firewire/core-cdev.c index 7eb6594cc3e5..d1d30c615b0f 100644 --- a/drivers/firewire/fw-cdev.c +++ b/drivers/firewire/core-cdev.c @@ -22,6 +22,7 @@ #include <linux/delay.h> #include <linux/device.h> #include <linux/errno.h> +#include <linux/firewire.h> #include <linux/firewire-cdev.h> #include <linux/idr.h> #include <linux/jiffies.h> @@ -34,16 +35,14 @@ #include <linux/preempt.h> #include <linux/spinlock.h> #include <linux/time.h> +#include <linux/uaccess.h> #include <linux/vmalloc.h> #include <linux/wait.h> #include <linux/workqueue.h> #include <asm/system.h> -#include <asm/uaccess.h> -#include "fw-device.h" -#include "fw-topology.h" -#include "fw-transaction.h" +#include "core.h" struct client { u32 version; @@ -739,15 +738,11 @@ static void release_descriptor(struct client *client, static int ioctl_add_descriptor(struct client *client, void *buffer) { struct fw_cdev_add_descriptor *request = buffer; - struct fw_card *card = client->device->card; struct descriptor_resource *r; int ret; /* Access policy: Allow this ioctl only on local nodes' device files. */ - spin_lock_irq(&card->lock); - ret = client->device->node_id != card->local_node->node_id; - spin_unlock_irq(&card->lock); - if (ret) + if (!client->device->is_local) return -ENOSYS; if (request->length > 256) diff --git a/drivers/firewire/fw-device.c b/drivers/firewire/core-device.c index a47e2129d83d..97e656af2d22 100644 --- a/drivers/firewire/fw-device.c +++ b/drivers/firewire/core-device.c @@ -22,10 +22,14 @@ #include <linux/delay.h> #include <linux/device.h> #include <linux/errno.h> +#include <linux/firewire.h> +#include <linux/firewire-constants.h> #include <linux/idr.h> #include <linux/jiffies.h> #include <linux/kobject.h> #include <linux/list.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> #include <linux/mutex.h> #include <linux/rwsem.h> #include <linux/semaphore.h> @@ -33,11 +37,11 @@ #include <linux/string.h> #include <linux/workqueue.h> +#include <asm/atomic.h> +#include <asm/byteorder.h> #include <asm/system.h> -#include "fw-device.h" -#include "fw-topology.h" -#include "fw-transaction.h" +#include "core.h" void fw_csr_iterator_init(struct fw_csr_iterator *ci, u32 * p) { @@ -55,9 +59,10 @@ int fw_csr_iterator_next(struct fw_csr_iterator *ci, int *key, int *value) } EXPORT_SYMBOL(fw_csr_iterator_next); -static int is_fw_unit(struct device *dev); +static bool is_fw_unit(struct device *dev); -static int match_unit_directory(u32 * directory, const struct fw_device_id *id) +static int match_unit_directory(u32 *directory, u32 match_flags, + const struct ieee1394_device_id *id) { struct fw_csr_iterator ci; int key, value, match; @@ -65,31 +70,42 @@ static int match_unit_directory(u32 * directory, const struct fw_device_id *id) match = 0; fw_csr_iterator_init(&ci, directory); while (fw_csr_iterator_next(&ci, &key, &value)) { - if (key == CSR_VENDOR && value == id->vendor) - match |= FW_MATCH_VENDOR; - if (key == CSR_MODEL && value == id->model) - match |= FW_MATCH_MODEL; + if (key == CSR_VENDOR && value == id->vendor_id) + match |= IEEE1394_MATCH_VENDOR_ID; + if (key == CSR_MODEL && value == id->model_id) + match |= IEEE1394_MATCH_MODEL_ID; if (key == CSR_SPECIFIER_ID && value == id->specifier_id) - match |= FW_MATCH_SPECIFIER_ID; + match |= IEEE1394_MATCH_SPECIFIER_ID; if (key == CSR_VERSION && value == id->version) - match |= FW_MATCH_VERSION; + match |= IEEE1394_MATCH_VERSION; } - return (match & id->match_flags) == id->match_flags; + return (match & match_flags) == match_flags; } static int fw_unit_match(struct device *dev, struct device_driver *drv) { struct fw_unit *unit = fw_unit(dev); - struct fw_driver *driver = fw_driver(drv); - int i; + struct fw_device *device; + const struct ieee1394_device_id *id; /* We only allow binding to fw_units. */ if (!is_fw_unit(dev)) return 0; - for (i = 0; driver->id_table[i].match_flags != 0; i++) { - if (match_unit_directory(unit->directory, &driver->id_table[i])) + device = fw_parent_device(unit); + id = container_of(drv, struct fw_driver, driver)->id_table; + + for (; id->match_flags != 0; id++) { + if (match_unit_directory(unit->directory, id->match_flags, id)) + return 1; + + /* Also check vendor ID in the root directory. */ + if ((id->match_flags & IEEE1394_MATCH_VENDOR_ID) && + match_unit_directory(&device->config_rom[5], + IEEE1394_MATCH_VENDOR_ID, id) && + match_unit_directory(unit->directory, id->match_flags + & ~IEEE1394_MATCH_VENDOR_ID, id)) return 1; } @@ -98,7 +114,7 @@ static int fw_unit_match(struct device *dev, struct device_driver *drv) static int get_modalias(struct fw_unit *unit, char *buffer, size_t buffer_size) { - struct fw_device *device = fw_device(unit->device.parent); + struct fw_device *device = fw_parent_device(unit); struct fw_csr_iterator ci; int key, value; @@ -292,8 +308,7 @@ static void init_fw_attribute_group(struct device *dev, group->attrs[j++] = &attr->attr; } - BUG_ON(j >= ARRAY_SIZE(group->attrs)); - group->attrs[j++] = NULL; + group->attrs[j] = NULL; group->groups[0] = &group->group; group->groups[1] = NULL; group->group.attrs = group->attrs; @@ -356,9 +371,56 @@ static ssize_t guid_show(struct device *dev, return ret; } +static int units_sprintf(char *buf, u32 *directory) +{ + struct fw_csr_iterator ci; + int key, value; + int specifier_id = 0; + int version = 0; + + fw_csr_iterator_init(&ci, directory); + while (fw_csr_iterator_next(&ci, &key, &value)) { + switch (key) { + case CSR_SPECIFIER_ID: + specifier_id = value; + break; + case CSR_VERSION: + version = value; + break; + } + } + + return sprintf(buf, "0x%06x:0x%06x ", specifier_id, version); +} + +static ssize_t units_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct fw_device *device = fw_device(dev); + struct fw_csr_iterator ci; + int key, value, i = 0; + + down_read(&fw_device_rwsem); + fw_csr_iterator_init(&ci, &device->config_rom[5]); + while (fw_csr_iterator_next(&ci, &key, &value)) { + if (key != (CSR_UNIT | CSR_DIRECTORY)) + continue; + i += units_sprintf(&buf[i], ci.p + value - 1); + if (i >= PAGE_SIZE - (8 + 1 + 8 + 1)) + break; + } + up_read(&fw_device_rwsem); + + if (i) + buf[i - 1] = '\n'; + + return i; +} + static struct device_attribute fw_device_attributes[] = { __ATTR_RO(config_rom), __ATTR_RO(guid), + __ATTR_RO(units), __ATTR_NULL, }; @@ -518,7 +580,9 @@ static int read_bus_info_block(struct fw_device *device, int generation) kfree(old_rom); ret = 0; - device->cmc = rom[2] >> 30 & 1; + device->max_rec = rom[2] >> 12 & 0xf; + device->cmc = rom[2] >> 30 & 1; + device->irmc = rom[2] >> 31 & 1; out: kfree(rom); @@ -537,7 +601,7 @@ static struct device_type fw_unit_type = { .release = fw_unit_release, }; -static int is_fw_unit(struct device *dev) +static bool is_fw_unit(struct device *dev) { return dev->type == &fw_unit_type; } @@ -570,9 +634,13 @@ static void create_units(struct fw_device *device) unit->device.parent = &device->device; dev_set_name(&unit->device, "%s.%d", dev_name(&device->device), i++); + BUILD_BUG_ON(ARRAY_SIZE(unit->attribute_group.attrs) < + ARRAY_SIZE(fw_unit_attributes) + + ARRAY_SIZE(config_rom_attributes)); init_fw_attribute_group(&unit->device, fw_unit_attributes, &unit->attribute_group); + if (device_register(&unit->device) < 0) goto skip_unit; @@ -683,6 +751,11 @@ static struct device_type fw_device_type = { .release = fw_device_release, }; +static bool is_fw_device(struct device *dev) +{ + return dev->type == &fw_device_type; +} + static int update_unit(struct device *dev, void *data) { struct fw_unit *unit = fw_unit(dev); @@ -719,6 +792,9 @@ static int lookup_existing_device(struct device *dev, void *data) struct fw_card *card = new->card; int match = 0; + if (!is_fw_device(dev)) + return 0; + down_read(&fw_device_rwsem); /* serialize config_rom access */ spin_lock_irq(&card->lock); /* serialize node access */ @@ -758,7 +834,7 @@ static int lookup_existing_device(struct device *dev, void *data) enum { BC_UNKNOWN = 0, BC_UNIMPLEMENTED, BC_IMPLEMENTED, }; -void fw_device_set_broadcast_channel(struct fw_device *device, int generation) +static void set_broadcast_channel(struct fw_device *device, int generation) { struct fw_card *card = device->card; __be32 data; @@ -767,6 +843,20 @@ void fw_device_set_broadcast_channel(struct fw_device *device, int generation) if (!card->broadcast_channel_allocated) return; + /* + * The Broadcast_Channel Valid bit is required by nodes which want to + * transmit on this channel. Such transmissions are practically + * exclusive to IP over 1394 (RFC 2734). IP capable nodes are required + * to be IRM capable and have a max_rec of 8 or more. We use this fact + * to narrow down to which nodes we send Broadcast_Channel updates. + */ + if (!device->irmc || device->max_rec < 8) + return; + + /* + * Some 1394-1995 nodes crash if this 1394a-2000 register is written. + * Perform a read test first. + */ if (device->bc_implemented == BC_UNKNOWN) { rcode = fw_run_transaction(card, TCODE_READ_QUADLET_REQUEST, device->node_id, generation, device->max_speed, @@ -794,6 +884,14 @@ void fw_device_set_broadcast_channel(struct fw_device *device, int generation) } } +int fw_device_set_broadcast_channel(struct device *dev, void *gen) +{ + if (is_fw_device(dev)) + set_broadcast_channel(fw_device(dev), (long)gen); + + return 0; +} + static void fw_device_init(struct work_struct *work) { struct fw_device *device = @@ -849,9 +947,13 @@ static void fw_device_init(struct work_struct *work) device->device.devt = MKDEV(fw_cdev_major, minor); dev_set_name(&device->device, "fw%d", minor); + BUILD_BUG_ON(ARRAY_SIZE(device->attribute_group.attrs) < + ARRAY_SIZE(fw_device_attributes) + + ARRAY_SIZE(config_rom_attributes)); init_fw_attribute_group(&device->device, fw_device_attributes, &device->attribute_group); + if (device_add(&device->device)) { fw_error("Failed to add device.\n"); goto error_with_cdev; @@ -888,7 +990,7 @@ static void fw_device_init(struct work_struct *work) 1 << device->max_speed); device->config_rom_retries = 0; - fw_device_set_broadcast_channel(device, device->generation); + set_broadcast_channel(device, device->generation); } /* @@ -993,6 +1095,9 @@ static void fw_device_refresh(struct work_struct *work) create_units(device); + /* Userspace may want to re-read attributes. */ + kobject_uevent(&device->device.kobj, KOBJ_CHANGE); + if (atomic_cmpxchg(&device->state, FW_DEVICE_INITIALIZING, FW_DEVICE_RUNNING) == FW_DEVICE_GONE) @@ -1042,6 +1147,7 @@ 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; + device->is_local = node == card->local_node; mutex_init(&device->client_list_mutex); INIT_LIST_HEAD(&device->client_list); @@ -1075,7 +1181,7 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event) FW_DEVICE_INITIALIZING) == FW_DEVICE_RUNNING) { PREPARE_DELAYED_WORK(&device->work, fw_device_refresh); schedule_delayed_work(&device->work, - node == card->local_node ? 0 : INITIAL_DELAY); + device->is_local ? 0 : INITIAL_DELAY); } break; diff --git a/drivers/firewire/fw-iso.c b/drivers/firewire/core-iso.c index 2baf1007253e..28076c892d7e 100644 --- a/drivers/firewire/fw-iso.c +++ b/drivers/firewire/core-iso.c @@ -22,14 +22,16 @@ #include <linux/dma-mapping.h> #include <linux/errno.h> +#include <linux/firewire.h> #include <linux/firewire-constants.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/spinlock.h> #include <linux/vmalloc.h> -#include "fw-topology.h" -#include "fw-transaction.h" +#include <asm/byteorder.h> + +#include "core.h" /* * Isochronous DMA context management diff --git a/drivers/firewire/fw-topology.c b/drivers/firewire/core-topology.c index d0deecc4de93..fddf2b358936 100644 --- a/drivers/firewire/fw-topology.c +++ b/drivers/firewire/core-topology.c @@ -18,13 +18,22 @@ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#include <linux/module.h> -#include <linux/wait.h> +#include <linux/bug.h> #include <linux/errno.h> -#include <asm/bug.h> +#include <linux/firewire.h> +#include <linux/firewire-constants.h> +#include <linux/jiffies.h> +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/spinlock.h> +#include <linux/string.h> + +#include <asm/atomic.h> #include <asm/system.h> -#include "fw-transaction.h" -#include "fw-topology.h" + +#include "core.h" #define SELF_ID_PHY_ID(q) (((q) >> 24) & 0x3f) #define SELF_ID_EXTENDED(q) (((q) >> 23) & 0x01) @@ -37,6 +46,11 @@ #define SELF_ID_EXT_SEQUENCE(q) (((q) >> 20) & 0x07) +#define SELFID_PORT_CHILD 0x3 +#define SELFID_PORT_PARENT 0x2 +#define SELFID_PORT_NCONN 0x1 +#define SELFID_PORT_NONE 0x0 + static u32 *count_ports(u32 *sid, int *total_port_count, int *child_port_count) { u32 q; diff --git a/drivers/firewire/fw-transaction.c b/drivers/firewire/core-transaction.c index 283dac6d327d..479b22f5a1eb 100644 --- a/drivers/firewire/fw-transaction.c +++ b/drivers/firewire/core-transaction.c @@ -18,24 +18,28 @@ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <linux/bug.h> #include <linux/completion.h> +#include <linux/device.h> +#include <linux/errno.h> +#include <linux/firewire.h> +#include <linux/firewire-constants.h> +#include <linux/fs.h> +#include <linux/init.h> #include <linux/idr.h> +#include <linux/jiffies.h> #include <linux/kernel.h> -#include <linux/kref.h> -#include <linux/module.h> -#include <linux/mutex.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/pci.h> -#include <linux/delay.h> -#include <linux/poll.h> #include <linux/list.h> -#include <linux/kthread.h> -#include <asm/uaccess.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/spinlock.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/types.h> -#include "fw-transaction.h" -#include "fw-topology.h" -#include "fw-device.h" +#include <asm/byteorder.h> + +#include "core.h" #define HEADER_PRI(pri) ((pri) << 0) #define HEADER_TCODE(tcode) ((tcode) << 4) @@ -60,6 +64,10 @@ #define HEADER_DESTINATION_IS_BROADCAST(q) \ (((q) & HEADER_DESTINATION(0x3f)) == HEADER_DESTINATION(0x3f)) +#define PHY_PACKET_CONFIG 0x0 +#define PHY_PACKET_LINK_ON 0x1 +#define PHY_PACKET_SELF_ID 0x2 + #define PHY_CONFIG_GAP_COUNT(gap_count) (((gap_count) << 16) | (1 << 22)) #define PHY_CONFIG_ROOT_ID(node_id) ((((node_id) & 0x3f) << 24) | (1 << 23)) #define PHY_IDENTIFIER(id) ((id) << 30) @@ -74,7 +82,7 @@ static int close_transaction(struct fw_transaction *transaction, list_for_each_entry(t, &card->transaction_list, link) { if (t == transaction) { list_del(&t->link); - card->tlabel_mask &= ~(1 << t->tlabel); + card->tlabel_mask &= ~(1ULL << t->tlabel); break; } } @@ -280,14 +288,14 @@ void fw_send_request(struct fw_card *card, struct fw_transaction *t, int tcode, spin_lock_irqsave(&card->lock, flags); tlabel = card->current_tlabel; - if (card->tlabel_mask & (1 << tlabel)) { + if (card->tlabel_mask & (1ULL << tlabel)) { spin_unlock_irqrestore(&card->lock, flags); callback(card, RCODE_SEND_ERROR, NULL, 0, callback_data); return; } - card->current_tlabel = (card->current_tlabel + 1) & 0x1f; - card->tlabel_mask |= (1 << tlabel); + card->current_tlabel = (card->current_tlabel + 1) & 0x3f; + card->tlabel_mask |= (1ULL << tlabel); t->node_id = destination_id; t->tlabel = tlabel; diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h new file mode 100644 index 000000000000..0a25a7b38a80 --- /dev/null +++ b/drivers/firewire/core.h @@ -0,0 +1,293 @@ +#ifndef _FIREWIRE_CORE_H +#define _FIREWIRE_CORE_H + +#include <linux/dma-mapping.h> +#include <linux/fs.h> +#include <linux/list.h> +#include <linux/idr.h> +#include <linux/mm_types.h> +#include <linux/rwsem.h> +#include <linux/slab.h> +#include <linux/types.h> + +#include <asm/atomic.h> + +struct device; +struct fw_card; +struct fw_device; +struct fw_iso_buffer; +struct fw_iso_context; +struct fw_iso_packet; +struct fw_node; +struct fw_packet; + + +/* -card */ + +/* bitfields within the PHY registers */ +#define PHY_LINK_ACTIVE 0x80 +#define PHY_CONTENDER 0x40 +#define PHY_BUS_RESET 0x40 +#define PHY_BUS_SHORT_RESET 0x40 + +#define BANDWIDTH_AVAILABLE_INITIAL 4915 +#define BROADCAST_CHANNEL_INITIAL (1 << 31 | 31) +#define BROADCAST_CHANNEL_VALID (1 << 30) + +struct fw_card_driver { + /* + * Enable the given card with the given initial config rom. + * This function is expected to activate the card, and either + * enable the PHY or set the link_on bit and initiate a bus + * reset. + */ + int (*enable)(struct fw_card *card, u32 *config_rom, size_t length); + + int (*update_phy_reg)(struct fw_card *card, int address, + int clear_bits, int set_bits); + + /* + * Update the config rom for an enabled card. This function + * should change the config rom that is presented on the bus + * an initiate a bus reset. + */ + int (*set_config_rom)(struct fw_card *card, + u32 *config_rom, size_t length); + + void (*send_request)(struct fw_card *card, struct fw_packet *packet); + void (*send_response)(struct fw_card *card, struct fw_packet *packet); + /* Calling cancel is valid once a packet has been submitted. */ + int (*cancel_packet)(struct fw_card *card, struct fw_packet *packet); + + /* + * Allow the specified node ID to do direct DMA out and in of + * host memory. The card will disable this for all node when + * a bus reset happens, so driver need to reenable this after + * bus reset. Returns 0 on success, -ENODEV if the card + * doesn't support this, -ESTALE if the generation doesn't + * match. + */ + int (*enable_phys_dma)(struct fw_card *card, + int node_id, int generation); + + u64 (*get_bus_time)(struct fw_card *card); + + struct fw_iso_context * + (*allocate_iso_context)(struct fw_card *card, + int type, int channel, size_t header_size); + void (*free_iso_context)(struct fw_iso_context *ctx); + + int (*start_iso)(struct fw_iso_context *ctx, + s32 cycle, u32 sync, u32 tags); + + int (*queue_iso)(struct fw_iso_context *ctx, + struct fw_iso_packet *packet, + struct fw_iso_buffer *buffer, + unsigned long payload); + + int (*stop_iso)(struct fw_iso_context *ctx); +}; + +void fw_card_initialize(struct fw_card *card, + const struct fw_card_driver *driver, struct device *device); +int fw_card_add(struct fw_card *card, + u32 max_receive, u32 link_speed, u64 guid); +void fw_core_remove_card(struct fw_card *card); +int fw_core_initiate_bus_reset(struct fw_card *card, int short_reset); +int fw_compute_block_crc(u32 *block); +void fw_schedule_bm_work(struct fw_card *card, unsigned long delay); + +struct fw_descriptor { + struct list_head link; + size_t length; + u32 immediate; + u32 key; + const u32 *data; +}; + +int fw_core_add_descriptor(struct fw_descriptor *desc); +void fw_core_remove_descriptor(struct fw_descriptor *desc); + + +/* -cdev */ + +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); + + +/* -device */ + +extern struct rw_semaphore fw_device_rwsem; +extern struct idr fw_device_idr; +extern int fw_cdev_major; + +struct fw_device *fw_device_get_by_devt(dev_t devt); +int fw_device_set_broadcast_channel(struct device *dev, void *gen); +void fw_node_event(struct fw_card *card, struct fw_node *node, int event); + + +/* -iso */ + +/* + * The iso packet format allows for an immediate header/payload part + * stored in 'header' immediately after the packet info plus an + * indirect payload part that is pointer to by the 'payload' field. + * Applications can use one or the other or both to implement simple + * low-bandwidth streaming (e.g. audio) or more advanced + * scatter-gather streaming (e.g. assembling video frame automatically). + */ +struct fw_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]; +}; + +#define FW_ISO_CONTEXT_TRANSMIT 0 +#define FW_ISO_CONTEXT_RECEIVE 1 + +#define FW_ISO_CONTEXT_MATCH_TAG0 1 +#define FW_ISO_CONTEXT_MATCH_TAG1 2 +#define FW_ISO_CONTEXT_MATCH_TAG2 4 +#define FW_ISO_CONTEXT_MATCH_TAG3 8 +#define FW_ISO_CONTEXT_MATCH_ALL_TAGS 15 + +/* + * An iso buffer is just a set of pages mapped for DMA in the + * specified direction. Since the pages are to be used for DMA, they + * are not mapped into the kernel virtual address space. We store the + * DMA address in the page private. The helper function + * fw_iso_buffer_map() will map the pages into a given vma. + */ +struct fw_iso_buffer { + enum dma_data_direction direction; + struct page **pages; + int page_count; +}; + +typedef void (*fw_iso_callback_t)(struct fw_iso_context *context, + u32 cycle, size_t header_length, + void *header, void *data); + +struct fw_iso_context { + struct fw_card *card; + int type; + int channel; + int speed; + size_t header_size; + fw_iso_callback_t callback; + void *callback_data; +}; + +int fw_iso_buffer_init(struct fw_iso_buffer *buffer, struct fw_card *card, + int page_count, enum dma_data_direction direction); +int fw_iso_buffer_map(struct fw_iso_buffer *buffer, struct vm_area_struct *vma); +void fw_iso_buffer_destroy(struct fw_iso_buffer *buffer, struct fw_card *card); + +struct fw_iso_context *fw_iso_context_create(struct fw_card *card, + int type, int channel, int speed, size_t header_size, + fw_iso_callback_t callback, void *callback_data); +int fw_iso_context_queue(struct fw_iso_context *ctx, + struct fw_iso_packet *packet, + struct fw_iso_buffer *buffer, + unsigned long payload); +int fw_iso_context_start(struct fw_iso_context *ctx, + int cycle, int sync, int tags); +int fw_iso_context_stop(struct fw_iso_context *ctx); +void fw_iso_context_destroy(struct fw_iso_context *ctx); + +void fw_iso_resource_manage(struct fw_card *card, int generation, + u64 channels_mask, int *channel, int *bandwidth, bool allocate); + + +/* -topology */ + +enum { + FW_NODE_CREATED, + FW_NODE_UPDATED, + FW_NODE_DESTROYED, + FW_NODE_LINK_ON, + FW_NODE_LINK_OFF, + FW_NODE_INITIATED_RESET, +}; + +struct fw_node { + u16 node_id; + u8 color; + u8 port_count; + u8 link_on:1; + u8 initiated_reset:1; + u8 b_path:1; + u8 phy_speed:2; /* As in the self ID packet. */ + u8 max_speed:2; /* Minimum of all phy-speeds on the path from the + * local node to this node. */ + u8 max_depth:4; /* Maximum depth to any leaf node */ + u8 max_hops:4; /* Max hops in this sub tree */ + atomic_t ref_count; + + /* For serializing node topology into a list. */ + struct list_head link; + + /* Upper layer specific data. */ + void *data; + + struct fw_node *ports[0]; +}; + +static inline struct fw_node *fw_node_get(struct fw_node *node) +{ + atomic_inc(&node->ref_count); + + return node; +} + +static inline void fw_node_put(struct fw_node *node) +{ + if (atomic_dec_and_test(&node->ref_count)) + kfree(node); +} + +void fw_core_handle_bus_reset(struct fw_card *card, int node_id, + int generation, int self_id_count, u32 *self_ids); +void fw_destroy_nodes(struct fw_card *card); + +/* + * Check whether new_generation is the immediate successor of old_generation. + * Take counter roll-over at 255 (as per OHCI) into account. + */ +static inline bool is_next_generation(int new_generation, int old_generation) +{ + return (new_generation & 0xff) == ((old_generation + 1) & 0xff); +} + + +/* -transaction */ + +#define TCODE_IS_READ_REQUEST(tcode) (((tcode) & ~1) == 4) +#define TCODE_IS_BLOCK_PACKET(tcode) (((tcode) & 1) != 0) +#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) +#define TCODE_HAS_RESPONSE_DATA(tcode) (((tcode) & 12) != 0) + +#define LOCAL_BUS 0xffc0 + +void fw_core_handle_request(struct fw_card *card, struct fw_packet *request); +void fw_core_handle_response(struct fw_card *card, struct fw_packet *packet); +void fw_fill_response(struct fw_packet *response, u32 *request_header, + int rcode, void *payload, size_t length); +void fw_flush_transactions(struct fw_card *card); +void fw_send_phy_config(struct fw_card *card, + int node_id, int generation, int gap_count); + +static inline int fw_stream_packet_destination_id(int tag, int channel, int sy) +{ + return tag << 14 | channel << 8 | sy; +} + +#endif /* _FIREWIRE_CORE_H */ diff --git a/drivers/firewire/fw-device.h b/drivers/firewire/fw-device.h deleted file mode 100644 index 97588937c018..000000000000 --- a/drivers/firewire/fw-device.h +++ /dev/null @@ -1,202 +0,0 @@ -/* - * 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_device_h -#define __fw_device_h - -#include <linux/device.h> -#include <linux/fs.h> -#include <linux/idr.h> -#include <linux/kernel.h> -#include <linux/list.h> -#include <linux/mutex.h> -#include <linux/rwsem.h> -#include <linux/sysfs.h> -#include <linux/types.h> -#include <linux/workqueue.h> - -#include <asm/atomic.h> < |