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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-16 17:29:46 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-16 17:29:46 -0400
commitf83b1e616f2f68b56b09b2f5116591981fee0c1c (patch)
treed8c423502853b46ec82c58ee31b695552579f7da
parent2f38d70fb4e97e7d00e12eaac45790cf6ebd7b22 (diff)
parent1e626fdcef61460dc75fe7377f38bb019722b848 (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
Diffstat
-rw-r--r--drivers/firewire/Makefile8
-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.h293
-rw-r--r--drivers/firewire/fw-device.h202
-rw-r--r--drivers/firewire/fw-topology.h77
-rw-r--r--drivers/firewire/fw-transaction.h446
-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.h358
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 @@
2# Makefile for the Linux IEEE 1394 implementation 2# Makefile for the Linux IEEE 1394 implementation
3# 3#
4 4
5firewire-core-y += fw-card.o fw-topology.o fw-transaction.o fw-iso.o \ 5firewire-core-y += core-card.o core-cdev.o core-device.o \
6 fw-device.o fw-cdev.o 6 core-iso.o core-topology.o core-transaction.o
7firewire-ohci-y += fw-ohci.o 7firewire-ohci-y += ohci.o
8firewire-sbp2-y += fw-sbp2.o 8firewire-sbp2-y += sbp2.o
9 9
10obj-$(CONFIG_FIREWIRE) += firewire-core.o 10obj-$(CONFIG_FIREWIRE) += firewire-core.o
11obj-$(CONFIG_FIREWIRE_OHCI) += firewire-ohci.o 11obj-$(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 @@
16 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 16 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */ 17 */
18 18
19#include <linux/bug.h>
19#include <linux/completion.h> 20#include <linux/completion.h>
20#include <linux/crc-itu-t.h> 21#include <linux/crc-itu-t.h>
21#include <linux/delay.h>
22#include <linux/device.h> 22#include <linux/device.h>
23#include <linux/errno.h> 23#include <linux/errno.h>
24#include <linux/firewire.h>
25#include <linux/firewire-constants.h>
26#include <linux/jiffies.h>
27#include <linux/kernel.h>
24#include <linux/kref.h> 28#include <linux/kref.h>
29#include <linux/list.h>
25#include <linux/module.h> 30#include <linux/module.h>
26#include <linux/mutex.h> 31#include <linux/mutex.h>
32#include <linux/spinlock.h>
33#include <linux/timer.h>
34#include <linux/workqueue.h>
27 35
28#include "fw-transaction.h" 36#include <asm/atomic.h>
29#include "fw-topology.h" 37#include <asm/byteorder.h>
30#include "fw-device.h" 38
39#include "core.h"
31 40
32int fw_compute_block_crc(u32 *block) 41int fw_compute_block_crc(u32 *block)
33{ 42{
@@ -181,12 +190,6 @@ void fw_core_remove_descriptor(struct fw_descriptor *desc)
181 mutex_unlock(&card_mutex); 190 mutex_unlock(&card_mutex);
182} 191}
183 192
184static int set_broadcast_channel(struct device *dev, void *data)
185{
186 fw_device_set_broadcast_channel(fw_device(dev), (long)data);
187 return 0;
188}
189
190static void allocate_broadcast_channel(struct fw_card *card, int generation) 193static void allocate_broadcast_channel(struct fw_card *card, int generation)
191{ 194{
192 int channel, bandwidth = 0; 195 int channel, bandwidth = 0;
@@ -196,7 +199,7 @@ static void allocate_broadcast_channel(struct fw_card *card, int generation)
196 if (channel == 31) { 199 if (channel == 31) {
197 card->broadcast_channel_allocated = true; 200 card->broadcast_channel_allocated = true;
198 device_for_each_child(card->device, (void *)(long)generation, 201 device_for_each_child(card->device, (void *)(long)generation,
199 set_broadcast_channel); 202 fw_device_set_broadcast_channel);
200 } 203 }
201} 204}
202 205
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 @@
22#include <linux/delay.h> 22#include <linux/delay.h>
23#include <linux/device.h> 23#include <linux/device.h>
24#include <linux/errno.h> 24#include <linux/errno.h>
25#include <linux/firewire.h>
25#include <linux/firewire-cdev.h> 26#include <linux/firewire-cdev.h>
26#include <linux/idr.h> 27#include <linux/idr.h>
27#include <linux/jiffies.h> 28#include <linux/jiffies.h>
@@ -34,16 +35,14 @@
34#include <linux/preempt.h> 35#include <linux/preempt.h>
35#include <linux/spinlock.h> 36#include <linux/spinlock.h>
36#include <linux/time.h> 37#include <linux/time.h>
38#include <linux/uaccess.h>
37#include <linux/vmalloc.h> 39#include <linux/vmalloc.h>
38#include <linux/wait.h> 40#include <linux/wait.h>
39#include <linux/workqueue.h> 41#include <linux/workqueue.h>
40 42
41#include <asm/system.h> 43#include <asm/system.h>
42#include <asm/uaccess.h>
43 44
44#include "fw-device.h" 45#include "core.h"
45#include "fw-topology.h"
46#include "fw-transaction.h"
47 46
48struct client { 47struct client {
49 u32 version; 48 u32 version;
@@ -739,15 +738,11 @@ static void release_descriptor(struct client *client,
739static int ioctl_add_descriptor(struct client *client, void *buffer) 738static int ioctl_add_descriptor(struct client *client, void *buffer)
740{ 739{
741 struct fw_cdev_add_descriptor *request = buffer; 740 struct fw_cdev_add_descriptor *request = buffer;
742 struct fw_card *card = client->device->card;
743 struct descriptor_resource *r; 741 struct descriptor_resource *r;
744 int ret; 742 int ret;
745 743
746 /* Access policy: Allow this ioctl only on local nodes' device files. */ 744 /* Access policy: Allow this ioctl only on local nodes' device files. */
747 spin_lock_irq(&card->lock); 745 if (!client->device->is_local)
748 ret = client->device->node_id != card->local_node->node_id;
749 spin_unlock_irq(&card->lock);
750 if (ret)
751 return -ENOSYS; 746 return -ENOSYS;
752 747
753 if (request->length > 256) 748 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 @@
22#include <linux/delay.h> 22#include <linux/delay.h>
23#include <linux/device.h> 23#include <linux/device.h>
24#include <linux/errno.h> 24#include <linux/errno.h>
25#include <linux/firewire.h>
26#include <linux/firewire-constants.h>
25#include <linux/idr.h> 27#include <linux/idr.h>
26#include <linux/jiffies.h> 28#include <linux/jiffies.h>
27#include <linux/kobject.h> 29#include <linux/kobject.h>
28#include <linux/list.h> 30#include <linux/list.h>
31#include <linux/mod_devicetable.h>
32#include <linux/module.h>
29#include <linux/mutex.h> 33#include <linux/mutex.h>
30#include <linux/rwsem.h> 34#include <linux/rwsem.h>
31#include <linux/semaphore.h> 35#include <linux/semaphore.h>
@@ -33,11 +37,11 @@
33#include <linux/string.h> 37#include <linux/string.h>
34#include <linux/workqueue.h> 38#include <linux/workqueue.h>
35 39
40#include <asm/atomic.h>
41#include <asm/byteorder.h>
36#include <asm/system.h> 42#include <asm/system.h>
37 43
38#include "fw-device.h" 44#include "core.h"
39#include "fw-topology.h"
40#include "fw-transaction.h"
41 45
42void fw_csr_iterator_init(struct fw_csr_iterator *ci, u32 * p) 46void fw_csr_iterator_init(struct fw_csr_iterator *ci, u32 * p)
43{ 47{
@@ -55,9 +59,10 @@ int fw_csr_iterator_next(struct fw_csr_iterator *ci, int *key, int *value)
55} 59}
56EXPORT_SYMBOL(fw_csr_iterator_next); 60EXPORT_SYMBOL(fw_csr_iterator_next);
57 61
58static int is_fw_unit(struct device *dev); 62static bool is_fw_unit(struct device *dev);
59 63
60static int match_unit_directory(u32 * directory, const struct fw_device_id *id) 64static int match_unit_directory(u32 *directory, u32 match_flags,
65 const struct ieee1394_device_id *id)
61{ 66{
62 struct fw_csr_iterator ci; 67 struct fw_csr_iterator ci;
63 int key, value, match; 68 int key, value, match;
@@ -65,31 +70,42 @@ static int match_unit_directory(u32 * directory, const struct fw_device_id *id)
65 match = 0; 70 match = 0;
66 fw_csr_iterator_init(&ci, directory); 71 fw_csr_iterator_init(&ci, directory);
67 while (fw_csr_iterator_next(&ci, &key, &value)) { 72 while (fw_csr_iterator_next(&ci, &key, &value)) {
68 if (key == CSR_VENDOR && value == id->vendor) 73 if (key == CSR_VENDOR && value == id->vendor_id)
69 match |= FW_MATCH_VENDOR; 74 match |= IEEE1394_MATCH_VENDOR_ID;
70 if (key == CSR_MODEL && value == id->model) 75 if (key == CSR_MODEL && value == id->model_id)
71 match |= FW_MATCH_MODEL; 76 match |= IEEE1394_MATCH_MODEL_ID;
72 if (key == CSR_SPECIFIER_ID && value == id->specifier_id) 77 if (key == CSR_SPECIFIER_ID && value == id->specifier_id)
73 match |= FW_MATCH_SPECIFIER_ID; 78 match |= IEEE1394_MATCH_SPECIFIER_ID;
74 if (key == CSR_VERSION && value == id->version) 79 if (key == CSR_VERSION && value == id->version)
75 match |= FW_MATCH_VERSION; 80 match |= IEEE1394_MATCH_VERSION;
76 } 81 }
77 82
78 return (match & id->match_flags) == id->match_flags; 83 return (match & match_flags) == match_flags;
79} 84}
80 85
81static int fw_unit_match(struct device *dev, struct device_driver *drv) 86static int fw_unit_match(struct device *dev, struct device_driver *drv)
82{ 87{
83 struct fw_unit *unit = fw_unit(dev); 88 struct fw_unit *unit = fw_unit(dev);
84 struct fw_driver *driver = fw_driver(drv); 89 struct fw_device *device;
85 int i; 90 const struct ieee1394_device_id *id;
86 91
87 /* We only allow binding to fw_units. */ 92 /* We only allow binding to fw_units. */
88 if (!is_fw_unit(dev)) 93 if (!is_fw_unit(dev))
89 return 0; 94 return 0;
90 95
91 for (i = 0; driver->id_table[i].match_flags != 0; i++) { 96 device = fw_parent_device(unit);
92 if (match_unit_directory(unit->directory, &driver->id_table[i])) 97 id = container_of(drv, struct fw_driver, driver)->id_table;
98
99 for (; id->match_flags != 0; id++) {
100 if (match_unit_directory(unit->directory, id->match_flags, id))
101 return 1;
102
103 /* Also check vendor ID in the root directory. */
104 if ((id->match_flags & IEEE1394_MATCH_VENDOR_ID) &&
105 match_unit_directory(&device->config_rom[5],
106 IEEE1394_MATCH_VENDOR_ID, id) &&
107 match_unit_directory(unit->directory, id->match_flags
108 & ~IEEE1394_MATCH_VENDOR_ID, id))
93 return 1; 109 return 1;
94 } 110 }
95 111
@@ -98,7 +114,7 @@ static int fw_unit_match(struct device *dev, struct device_driver *drv)
98 114
99static int get_modalias(struct fw_unit *unit, char *buffer, size_t buffer_size) 115static int get_modalias(struct fw_unit *unit, char *buffer, size_t buffer_size)
100{ 116{
101 struct fw_device *device = fw_device(unit->device.parent); 117 struct fw_device *device = fw_parent_device(unit);
102 struct fw_csr_iterator ci; 118 struct fw_csr_iterator ci;
103 119
104 int key, value; 120 int key, value;
@@ -292,8 +308,7 @@ static void init_fw_attribute_group(struct device *dev,
292 group->attrs[j++] = &attr->attr; 308 group->attrs[j++] = &attr->attr;
293 } 309 }
294 310
295 BUG_ON(j >= ARRAY_SIZE(group->attrs)); 311 group->attrs[j] = NULL;
296 group->attrs[j++] = NULL;
297 group->groups[0] = &group->group; 312 group->groups[0] = &group->group;
298 group->groups[1] = NULL; 313 group->groups[1] = NULL;
299 group->group.attrs = group->attrs; 314 group->group.attrs = group->attrs;
@@ -356,9 +371,56 @@ static ssize_t guid_show(struct device *dev,
356 return ret; 371 return ret;
357} 372}
358 373
374static int units_sprintf(char *buf, u32 *directory)
375{
376 struct fw_csr_iterator ci;
377 int key, value;
378 int specifier_id = 0;
379 int version = 0;
380
381 fw_csr_iterator_init(&ci, directory);
382 while (fw_csr_iterator_next(&ci, &key, &value)) {
383 switch (key) {
384 case CSR_SPECIFIER_ID:
385 specifier_id = value;
386 break;
387 case CSR_VERSION:
388 version = value;
389 break;
390 }
391 }
392
393 return sprintf(buf, "0x%06x:0x%06x ", specifier_id, version);
394}
395
396static ssize_t units_show(struct device *dev,
397 struct device_attribute *attr, char *buf)
398{
399 struct fw_device *device = fw_device(dev);
400 struct fw_csr_iterator ci;
401 int key, value, i = 0;
402
403 down_read(&fw_device_rwsem);
404 fw_csr_iterator_init(&ci, &device->config_rom[5]);
405 while (fw_csr_iterator_next(&ci, &key, &value)) {
406 if (key != (CSR_UNIT | CSR_DIRECTORY))
407 continue;
408 i += units_sprintf(&buf[i], ci.p + value - 1);
409 if (i >= PAGE_SIZE - (8 + 1 + 8 + 1))
410 break;
411 }
412 up_read(&fw_device_rwsem);
413
414 if (i)
415 buf[i - 1] = '\n';
416
417 return i;
418}
419
359static struct device_attribute fw_device_attributes[] = { 420static struct device_attribute fw_device_attributes[] = {
360 __ATTR_RO(config_rom), 421 __ATTR_RO(config_rom),
361 __ATTR_RO(guid), 422 __ATTR_RO(guid),
423 __ATTR_RO(units),
362 __ATTR_NULL, 424 __ATTR_NULL,
363}; 425};
364 426
@@ -518,7 +580,9 @@ static int read_bus_info_block(struct fw_device *device, int generation)
518 580
519 kfree(old_rom); 581 kfree(old_rom);
520 ret = 0; 582 ret = 0;
521 device->cmc = rom[2] >> 30 & 1; 583 device->max_rec = rom[2] >> 12 & 0xf;
584 device->cmc = rom[2] >> 30 & 1;
585 device->irmc = rom[2] >> 31 & 1;
522 out: 586 out:
523 kfree(rom); 587 kfree(rom);
524 588
@@ -537,7 +601,7 @@ static struct device_type fw_unit_type = {
537 .release = fw_unit_release, 601 .release = fw_unit_release,
538}; 602};
539 603
540static int is_fw_unit(struct device *dev) 604static bool is_fw_unit(struct device *dev)
541{ 605{
542 return dev->type == &fw_unit_type; 606 return dev->type == &fw_unit_type;
543} 607}
@@ -570,9 +634,13 @@ static void create_units(struct fw_device *device)
570 unit->device.parent = &device->device; 634 unit->device.parent = &device->device;
571 dev_set_name(&unit->device, "%s.%d", dev_name(&device->device), i++); 635 dev_set_name(&unit->device, "%s.%d", dev_name(&device->device), i++);
572 636
637 BUILD_BUG_ON(ARRAY_SIZE(unit->attribute_group.attrs) <
638 ARRAY_SIZE(fw_unit_attributes) +
639 ARRAY_SIZE(config_rom_attributes));
573 init_fw_attribute_group(&unit->device, 640 init_fw_attribute_group(&unit->device,
574 fw_unit_attributes, 641 fw_unit_attributes,
575 &unit->attribute_group); 642 &unit->attribute_group);
643
576 if (device_register(&unit->device) < 0) 644 if (device_register(&unit->device) < 0)
577 goto skip_unit; 645 goto skip_unit;
578 646
@@ -683,6 +751,11 @@ static struct device_type fw_device_type = {
683 .release = fw_device_release, 751 .release = fw_device_release,
684}; 752};
685 753
754static bool is_fw_device(struct device *dev)
755{
756 return dev->type == &fw_device_type;
757}
758
686static int update_unit(struct device *dev, void *data) 759static int update_unit(struct device *dev, void *data)
687{ 760{
688 struct fw_unit *unit = fw_unit(dev); 761 struct fw_unit *unit = fw_unit(dev);
@@ -719,6 +792,9 @@ static int lookup_existing_device(struct device *dev, void *data)
719 struct fw_card *card = new->card; 792 struct fw_card *card = new->card;
720 int match = 0; 793 int match = 0;
721 794
795 if (!is_fw_device(dev))
796 return 0;
797
722 down_read(&fw_device_rwsem); /* serialize config_rom access */ 798 down_read(&fw_device_rwsem); /* serialize config_rom access */
723 spin_lock_irq(&card->lock); /* serialize node access */ 799 spin_lock_irq(&card->lock); /* serialize node access */
724 800
@@ -758,7 +834,7 @@ static int lookup_existing_device(struct device *dev, void *data)
758 834
759enum { BC_UNKNOWN = 0, BC_UNIMPLEMENTED, BC_IMPLEMENTED, }; 835enum { BC_UNKNOWN = 0, BC_UNIMPLEMENTED, BC_IMPLEMENTED, };
760 836
761void fw_device_set_broadcast_channel(struct fw_device *device, int generation) 837static void set_broadcast_channel(struct fw_device *device, int generation)
762{ 838{
763 struct fw_card *card = device->card; 839 struct fw_card *card = device->card;
764 __be32 data; 840 __be32 data;
@@ -767,6 +843,20 @@ void fw_device_set_broadcast_channel(struct fw_device *device, int generation)
767 if (!card->broadcast_channel_allocated) 843 if (!card->broadcast_channel_allocated)
768 return; 844 return;
769 845
846 /*
847 * The Broadcast_Channel Valid bit is required by nodes which want to
848 * transmit on this channel. Such transmissions are practically
849 * exclusive to IP over 1394 (RFC 2734). IP capable nodes are required
850 * to be IRM capable and have a max_rec of 8 or more. We use this fact
851 * to narrow down to which nodes we send Broadcast_Channel updates.
852 */
853 if (!device->irmc || device->max_rec < 8)
854 return;
855
856 /*
857 * Some 1394-1995 nodes crash if this 1394a-2000 register is written.
858 * Perform a read test first.
859 */
770 if (device->bc_implemented == BC_UNKNOWN) { 860 if (device->bc_implemented == BC_UNKNOWN) {
771 rcode = fw_run_transaction(card, TCODE_READ_QUADLET_REQUEST, 861 rcode = fw_run_transaction(card, TCODE_READ_QUADLET_REQUEST,
772 device->node_id, generation, device->max_speed, 862 device->node_id, generation, device->max_speed,
@@ -794,6 +884,14 @@ void fw_device_set_broadcast_channel(struct fw_device *device, int generation)
794 } 884 }
795} 885}
796 886
887int fw_device_set_broadcast_channel(struct device *dev, void *gen)
888{
889 if (is_fw_device(dev))
890 set_broadcast_channel(fw_device(dev), (long)gen);
891
892 return 0;
893}
894
797static void fw_device_init(struct work_struct *work) 895static void fw_device_init(struct work_struct *work)
798{ 896{
799 struct fw_device *device = 897 struct fw_device *device =
@@ -849,9 +947,13 @@ static void fw_device_init(struct work_struct *work)
849 device->device.devt = MKDEV(fw_cdev_major, minor); 947 device->device.devt = MKDEV(fw_cdev_major, minor);
850 dev_set_name(&device->device, "fw%d", minor); 948 dev_set_name(&device->device, "fw%d", minor);
851 949
950 BUILD_BUG_ON(ARRAY_SIZE(device->attribute_group.attrs) <
951 ARRAY_SIZE(fw_device_attributes) +
952 ARRAY_SIZE(config_rom_attributes));
852 init_fw_attribute_group(&device->device, 953 init_fw_attribute_group(&device->device,
853 fw_device_attributes, 954 fw_device_attributes,
854 &device->attribute_group); 955 &device->attribute_group);
956
855 if (device_add(&device->device)) { 957 if (device_add(&device->device)) {
856 fw_error("Failed to add device.\n"); 958 fw_error("Failed to add device.\n");
857 goto error_with_cdev; 959 goto error_with_cdev;
@@ -888,7 +990,7 @@ static void fw_device_init(struct work_struct *work)
888 1 << device->max_speed); 990 1 << device->max_speed);
889 device->config_rom_retries = 0; 991 device->config_rom_retries = 0;
890 992
891 fw_device_set_broadcast_channel(device, device->generation); 993 set_broadcast_channel(device, device->generation);
892 } 994 }
893 995
894 /* 996 /*
@@ -993,6 +1095,9 @@ static void fw_device_refresh(struct work_struct *work)
993 1095
994 create_units(device); 1096 create_units(device);
995 1097
1098 /* Userspace may want to re-read attributes. */
1099 kobject_uevent(&device->device.kobj, KOBJ_CHANGE);
1100
996 if (atomic_cmpxchg(&device->state, 1101 if (atomic_cmpxchg(&device->state,
997 FW_DEVICE_INITIALIZING, 1102 FW_DEVICE_INITIALIZING,
998 FW_DEVICE_RUNNING) == FW_DEVICE_GONE) 1103 FW_DEVICE_RUNNING) == FW_DEVICE_GONE)
@@ -1042,6 +1147,7 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event)
1042 device->node = fw_node_get(node); 1147 device->node = fw_node_get(node);
1043 device->node_id = node->node_id; 1148 device->node_id = node->node_id;
1044 device->generation = card->generation; 1149 device->generation = card->generation;
1150 device->is_local = node == card->local_node;
1045 mutex_init(&device->client_list_mutex); 1151 mutex_init(&device->client_list_mutex);
1046 INIT_LIST_HEAD(&device->client_list); 1152 INIT_LIST_HEAD(&device->client_list);
1047 1153
@@ -1075,7 +1181,7 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event)
1075 FW_DEVICE_INITIALIZING) == FW_DEVICE_RUNNING) { 1181 FW_DEVICE_INITIALIZING) == FW_DEVICE_RUNNING) {
1076 PREPARE_DELAYED_WORK(&device->work, fw_device_refresh); 1182 PREPARE_DELAYED_WORK(&device->work, fw_device_refresh);
1077 schedule_delayed_work(&device->work, 1183 schedule_delayed_work(&device->work,
1078 node == card->local_node ? 0 : INITIAL_DELAY); 1184 device->is_local ? 0 : INITIAL_DELAY);
1079 } 1185 }
1080 break; 1186 break;
1081 1187
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 @@
22 22
23#include <linux/dma-mapping.h> 23#include <linux/dma-mapping.h>
24#include <linux/errno.h> 24#include <linux/errno.h>
25#include <linux/firewire.h>
25#include <linux/firewire-constants.h> 26#include <linux/firewire-constants.h>
26#include <linux/kernel.h> 27#include <linux/kernel.h>
27#include <linux/mm.h> 28#include <linux/mm.h>
28#include <linux/spinlock.h> 29#include <linux/spinlock.h>
29#include <linux/vmalloc.h> 30#include <linux/vmalloc.h>
30 31
31#include "fw-topology.h" 32#include <asm/byteorder.h>
32#include "fw-transaction.h" 33
34#include "core.h"
33 35
34/* 36/*
35 * Isochronous DMA context management 37 * 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 @@
18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 */ 19 */
20 20
21#include <linux/module.h> 21#include <linux/bug.h>
22#include <linux/wait.h>
23#include <linux/errno.h> 22#include <linux/errno.h>
24#include <asm/bug.h> 23#include <linux/firewire.h>
24#include <linux/firewire-constants.h>
25#include <linux/jiffies.h>
26#include <linux/kernel.h>
27#include <linux/list.h>
28#include <linux/module.h>
29#include <linux/slab.h>
30#include <linux/spinlock.h>
31#include <linux/string.h>
32
33#include <asm/atomic.h>
25#include <asm/system.h> 34#include <asm/system.h>
26#include "fw-transaction.h" 35
27#include "fw-topology.h" 36#include "core.h"
28 37
29#define SELF_ID_PHY_ID(q) (((q) >> 24) & 0x3f) 38#define SELF_ID_PHY_ID(q) (((q) >> 24) & 0x3f)
30#define SELF_ID_EXTENDED(q) (((q) >> 23) & 0x01) 39#define SELF_ID_EXTENDED(q) (((q) >> 23) & 0x01)
@@ -37,6 +46,11 @@
37 46
38#define SELF_ID_EXT_SEQUENCE(q) (((q) >> 20) & 0x07) 47#define SELF_ID_EXT_SEQUENCE(q) (((q) >> 20) & 0x07)
39 48
49#define SELFID_PORT_CHILD 0x3
50#define SELFID_PORT_PARENT 0x2
51#define SELFID_PORT_NCONN 0x1
52#define SELFID_PORT_NONE 0x0
53
40static u32 *count_ports(u32 *sid, int *total_port_count, int *child_port_count) 54static u32 *count_ports(u32 *sid, int *total_port_count, int *child_port_count)
41{ 55{
42 u32 q; 56 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 @@
18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 */ 19 */
20 20
21#include <linux/bug.h>
21#include <linux/completion.h> 22#include <linux/completion.h>
23#include <linux/device.h>
24#include <linux/errno.h>
25#include <linux/firewire.h>
26#include <linux/firewire-constants.h>
27#include <linux/fs.h>
28#include <linux/init.h>
22#include <linux/idr.h> 29#include <linux/idr.h>
30#include <linux/jiffies.h>
23#include <linux/kernel.h> 31#include <linux/kernel.h>
24#include <linux/kref.h>
25#include <linux/module.h>
26#include <linux/mutex.h>
27#include <linux/init.h>
28#include <linux/interrupt.h>
29#include <linux/pci.h>
30#include <linux/delay.h>
31#include <linux/poll.h>
32#include <linux/list.h> 32#include <linux/list.h>
33#include <linux/kthread.h> 33#include <linux/module.h>
34#include <asm/uaccess.h> 34#include <linux/slab.h>
35#include <linux/spinlock.h>
36#include <linux/string.h>
37#include <linux/timer.h>
38#include <linux/types.h>
35 39
36#include "fw-transaction.h" 40#include <asm/byteorder.h>
37#include "fw-topology.h" 41
38#include "fw-device.h" 42#include "core.h"
39 43
40#define HEADER_PRI(pri) ((pri) << 0) 44#define HEADER_PRI(pri) ((pri) << 0)
41#define HEADER_TCODE(tcode) ((tcode) << 4) 45#define HEADER_TCODE(tcode) ((tcode) << 4)
@@ -60,6 +64,10 @@
60#define HEADER_DESTINATION_IS_BROADCAST(q) \ 64#define HEADER_DESTINATION_IS_BROADCAST(q) \
61 (((q) & HEADER_DESTINATION(0x3f)) == HEADER_DESTINATION(0x3f)) 65 (((q) & HEADER_DESTINATION(0x3f)) == HEADER_DESTINATION(0x3f))
62 66
67#define PHY_PACKET_CONFIG 0x0
68#define PHY_PACKET_LINK_ON 0x1
69#define PHY_PACKET_SELF_ID 0x2
70
63#define PHY_CONFIG_GAP_COUNT(gap_count) (((gap_count) << 16) | (1 << 22)) 71#define PHY_CONFIG_GAP_COUNT(gap_count) (((gap_count) << 16) | (1 << 22))
64#define PHY_CONFIG_ROOT_ID(node_id) ((((node_id) & 0x3f) << 24) | (1 << 23)) 72#define PHY_CONFIG_ROOT_ID(node_id) ((((node_id) & 0x3f) << 24) | (1 << 23))
65#define PHY_IDENTIFIER(id) ((id) << 30) 73#define PHY_IDENTIFIER(id) ((id) << 30)
@@ -74,7 +82,7 @@ static int close_transaction(struct fw_transaction *transaction,
74 list_for_each_entry(t, &card->transaction_list, link) { 82 list_for_each_entry(t, &card->transaction_list, link) {
75 if (t == transaction) { 83 if (t == transaction) {
76 list_del(&t->link); 84 list_del(&t->link);
77 card->tlabel_mask &= ~(1 << t->tlabel); 85 card->tlabel_mask &= ~(1ULL << t->tlabel);
78 break; 86 break;
79 } 87 }
80 } 88 }
@@ -280,14 +288,14 @@ void fw_send_request(struct fw_card *card, struct fw_transaction *t, int tcode,
280 spin_lock_irqsave(&card->lock, flags); 288 spin_lock_irqsave(&card->lock, flags);
281 289
282 tlabel = card->current_tlabel; 290 tlabel = card->current_tlabel;
283 if (card->tlabel_mask & (1 << tlabel)) { 291 if (card->tlabel_mask & (1ULL << tlabel)) {
284 spin_unlock_irqrestore(&card->lock, flags); 292 spin_unlock_irqrestore(&card->lock, flags);
285 callback(card, RCODE_SEND_ERROR, NULL, 0, callback_data); 293 callback(card, RCODE_SEND_ERROR, NULL, 0, callback_data);
286 return; 294 return;
287 } 295 }
288 296
289 card->current_tlabel = (card->current_tlabel + 1) & 0x1f; 297 card->current_tlabel = (card->current_tlabel + 1) & 0x3f;
290 card->tlabel_mask |= (1 << tlabel); 298 card->tlabel_mask |= (1ULL << tlabel);
291 299
292 t->node_id = destination_id; 300 t->node_id = destination_id;
293 t->tlabel = tlabel; 301 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 @@
1#ifndef _FIREWIRE_CORE_H
2#define _FIREWIRE_CORE_H
3
4#include <linux/dma-mapping.h>
5#include <linux/fs.h>
6#include <linux/list.h>
7#include <linux/idr.h>
8#include <linux/mm_types.h>
9#include <linux/rwsem.h>
10#include <linux/slab.h>
11#include <linux/types.h>
12
13#include <asm/atomic.h>
14
15struct device;
16struct fw_card;
17struct fw_device;
18struct fw_iso_buffer;
19struct fw_iso_context;
20struct fw_iso_packet;
21struct fw_node;
22struct fw_packet;
23
24
25/* -card */
26
27/* bitfields within the PHY registers */
28#define PHY_LINK_ACTIVE 0x80
29#define PHY_CONTENDER 0x40
30#define PHY_BUS_RESET 0x40
31#define PHY_BUS_SHORT_RESET 0x40
32
33#define BANDWIDTH_AVAILABLE_INITIAL 4915
34#define BROADCAST_CHANNEL_INITIAL (1 << 31 | 31)
35#define BROADCAST_CHANNEL_VALID (1 << 30)
36
37struct fw_card_driver {
38 /*
39 * Enable the given card with the given initial config rom.
40 * This function is expected to activate the card, and either
41 * enable the PHY or set the link_on bit and initiate a bus
42 * reset.
43 */
44 int (*enable)(struct fw_card *card, u32 *config_rom, size_t length);
45
46 int (*update_phy_reg)(struct fw_card *card, int address,
47 int clear_bits, int set_bits);
48
49 /*
50 * Update the config rom for an enabled card. This function
51 * should change the config rom that is presented on the bus
52 * an initiate a bus reset.
53 */
54 int (*set_config_rom)(struct fw_card *card,
55 u32 *config_rom, size_t length);
56
57 void (*send_request)(struct fw_card *card, struct fw_packet *packet);
58 void (*send_response)(struct fw_card *card, struct fw_packet *packet);
59 /* Calling cancel is valid once a packet has been submitted. */
60 int (*cancel_packet)(struct fw_card *card, struct fw_packet *packet);
61
62 /*
63 * Allow the specified node ID to do direct DMA out and in of
64 * host memory. The card will disable this for all node when
65 * a bus reset happens, so driver need to reenable this after
66 * bus reset. Returns 0 on success, -ENODEV if the card
67 * doesn't support this, -ESTALE if the generation doesn't
68 * match.
69 */
70 int (*enable_phys_dma)(struct fw_card *card,
71 int node_id, int generation);
72
73 u64 (*get_bus_time)(struct fw_card *card);
74
75 struct fw_iso_context *
76 (*allocate_iso_context)(struct fw_card *card,
77 int type, int channel, size_t header_size);
78 void (*free_iso_context)(struct fw_iso_context *ctx);
79
80 int (*start_iso)(struct fw_iso_context *ctx,
81 s32 cycle, u32 sync, u32 tags);
82
83 int (*queue_iso)(struct fw_iso_context *ctx,
84 struct fw_iso_packet *packet,
85 struct fw_iso_buffer *buffer,
86 unsigned long payload);
87
88 int (*stop_iso)(struct fw_iso_context *ctx);
89};
90
91void fw_card_initialize(struct fw_card *card,
92 const struct fw_card_driver *driver, struct device *device);
93int fw_card_add(struct fw_card *card,
94 u32 max_receive, u32 link_speed, u64 guid);
95void fw_core_remove_card(struct fw_card *card);
96int fw_core_initiate_bus_reset(struct fw_card *card, int short_reset);
97int fw_compute_block_crc(u32 *block);
98void fw_schedule_bm_work(struct fw_card *card, unsigned long delay);
99
100struct fw_descriptor {
101 struct list_head link;
102 size_t length;
103 u32 immediate;
104 u32 key;
105 const u32 *data;
106};
107
108int fw_core_add_descriptor(struct fw_descriptor *desc);
109void fw_core_remove_descriptor(struct fw_descriptor *desc);
110
111
112/* -cdev */
113
114extern const struct file_operations fw_device_ops;
115
116void fw_device_cdev_update(struct fw_device *device);
117void fw_device_cdev_remove(struct fw_device *device);
118
119
120/* -device */
121
122extern struct rw_semaphore fw_device_rwsem;
123extern struct idr fw_device_idr;
124extern int fw_cdev_major;
125
126struct fw_device *fw_device_get_by_devt(dev_t devt);
127int fw_device_set_broadcast_channel(struct device *dev, void *gen);
128void fw_node_event(struct fw_card *card, struct fw_node *node, int event);
129
130
131/* -iso */
132
133/*
134 * The iso packet format allows for an immediate header/payload part
135 * stored in 'header' immediately after the packet info plus an
136 * indirect payload part that is pointer to by the 'payload' field.
137 * Applications can use one or the other or both to implement simple
138 * low-bandwidth streaming (e.g. audio) or more advanced
139 * scatter-gather streaming (e.g. assembling video frame automatically).
140 */
141struct fw_iso_packet {
142 u16 payload_length; /* Length of indirect payload. */
143 u32 interrupt:1; /* Generate interrupt on this packet */
144 u32 skip:1; /* Set to not send packet at all. */
145 u32 tag:2;
146 u32 sy:4;
147 u32 header_length:8; /* Length of immediate header. */
148 u32 header[0];
149};
150
151#define FW_ISO_CONTEXT_TRANSMIT 0
152#define FW_ISO_CONTEXT_RECEIVE 1
153
154#define FW_ISO_CONTEXT_MATCH_TAG0 1
155#define FW_ISO_CONTEXT_MATCH_TAG1 2
156#define FW_ISO_CONTEXT_MATCH_TAG2 4
157#define FW_ISO_CONTEXT_MATCH_TAG3 8
158#define FW_ISO_CONTEXT_MATCH_ALL_TAGS 15
159
160/*
161 * An iso buffer is just a set of pages mapped for DMA in the
162 * specified direction. Since the pages are to be used for DMA, they
163 * are not mapped into the kernel virtual address space. We store the
164 * DMA address in the page private. The helper function
165 * fw_iso_buffer_map() will map the pages into a given vma.
166 */
167struct fw_iso_buffer {
168 enum dma_data_direction direction;
169 struct page **pages;
170 int page_count;
171};
172
173typedef void (*fw_iso_callback_t)(struct fw_iso_context *context,
174 u32 cycle, size_t header_length,
175 void *header, void *data);
176
177struct fw_iso_context {
178 struct fw_card *card;
179 int type;
180 int channel;
181 int speed;
182 size_t header_size;
183 fw_iso_callback_t callback;
184 void *callback_data;
185};
186
187int fw_iso_buffer_init(struct fw_iso_buffer *buffer, struct fw_card *card,
188 int page_count, enum dma_data_direction direction);
189int fw_iso_buffer_map(struct fw_iso_buffer *buffer, struct vm_area_struct *vma);
190void fw_iso_buffer_destroy(struct fw_iso_buffer *buffer, struct fw_card *card);
191
192struct fw_iso_context *fw_iso_context_create(struct fw_card *card,
193 int type, int channel, int speed, size_t header_size,
194 fw_iso_callback_t callback, void *callback_data);
195int fw_iso_context_queue(struct fw_iso_context *ctx,
196 struct fw_iso_packet *packet,
197 struct fw_iso_buffer *buffer,
198 unsigned long payload);
199int fw_iso_context_start(struct fw_iso_context *ctx,
200 int cycle, int sync, int tags);
201int fw_iso_context_stop(struct fw_iso_context *ctx);
202void fw_iso_context_destroy(struct fw_iso_context *ctx);
203
204void fw_iso_resource_manage(struct fw_card *card, int generation,
205 u64 channels_mask, int *channel, int *bandwidth, bool allocate);
206
207
208/* -topology */
209
210enum {
211 FW_NODE_CREATED,
212 FW_NODE_UPDATED,
213 FW_NODE_DESTROYED,
214 FW_NODE_LINK_ON,
215 FW_NODE_LINK_OFF,
216 FW_NODE_INITIATED_RESET,
217};
218
219struct fw_node {
220 u16 node_id;
221 u8 color;
222 u8 port_count;
223 u8 link_on:1;
224 u8 initiated_reset:1;
225 u8 b_path:1;
226 u8 phy_speed:2; /* As in the self ID packet. */
227 u8 max_speed:2; /* Minimum of all phy-speeds on the path from the
228 * local node to this node. */
229 u8 max_depth:4; /* Maximum depth to any leaf node */
230 u8 max_hops:4; /* Max hops in this sub tree */
231 atomic_t ref_count;
232
233 /* For serializing node topology into a list. */
234 struct list_head link;
235
236 /* Upper layer specific data. */
237 void *data;
238
239 struct fw_node *ports[0];
240};
241
242static inline struct fw_node *fw_node_get(struct fw_node *node)
243{
244 atomic_inc(&node->ref_count);
245
246 return node;
247}
248
249static inline void fw_node_put(struct fw_node *node)
250{
251 if (atomic_dec_and_test(&node->ref_count))
252 kfree(node);
253}
254
255void fw_core_handle_bus_reset(struct fw_card *card, int node_id,
256 int generation, int self_id_count, u32 *self_ids);
257void fw_destroy_nodes(struct fw_card *card);
258
259/*
260 * Check whether new_generation is the immediate successor of old_generation.
261 * Take counter roll-over at 255 (as per OHCI) into account.
262 */
263static inline bool is_next_generation(int new_generation, int old_generation)
264{
265 return (new_generation & 0xff) == ((old_generation + 1) & 0xff);
266}
267
268
269/* -transaction */
270
271#define TCODE_IS_READ_REQUEST(tcode) (((tcode) & ~1) == 4)
272#define TCODE_IS_BLOCK_PACKET(tcode) (((tcode) & 1) != 0)
273#define TCODE_IS_REQUEST(tcode) (((tcode) & 2) == 0)
274#define TCODE_IS_RESPONSE(tcode) (((tcode) & 2) != 0)
275#define TCODE_HAS_REQUEST_DATA(tcode) (((tcode) & 12) != 4)
276#define TCODE_HAS_RESPONSE_DATA(tcode) (((tcode) & 12) != 0)
277
278#define LOCAL_BUS 0xffc0
279
280void fw_core_handle_request(struct fw_card *card, struct fw_packet *request);
281void fw_core_handle_response(struct fw_card *card, struct fw_packet *packet);
282void fw_fill_response(struct fw_packet *response, u32 *request_header,
283 int rcode, void *payload, size_t length);
284void fw_flush_transactions(struct fw_card *card);
285void fw_send_phy_config(struct fw_card *card,
286 int node_id, int generation, int gap_count);
287
288static inline int fw_stream_packet_destination_id(int tag, int channel, int sy)
289{
290 return tag << 14 | channel << 8 | sy;
291}
292
293#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 @@
1/*
2 * Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19#ifndef __fw_device_h
20#define __fw_device_h
21
22#include <linux/device.h>
23#include <linux/fs.h>
24#include <linux/idr.h>
25#include <linux/kernel.h>
26#include <linux/list.h>
27#include <linux/mutex.h>
28#include <linux/rwsem.h>
29#include <linux/sysfs.h>
30#include <linux/types.h>
31#include <linux/workqueue.h>
32
33#include <asm/atomic.h>
34
35enum fw_device_state {
36 FW_DEVICE_INITIALIZING,
37 FW_DEVICE_RUNNING,
38 FW_DEVICE_GONE,
39 FW_DEVICE_SHUTDOWN,
40};
41
42struct fw_attribute_group {
43 struct attribute_group *groups[2];
44 struct attribute_group group;
45 struct attribute *attrs[11];
46};
47
48struct fw_node;
49struct fw_card;
50
51/*
52 * Note, fw_device.generation always has to be read before fw_device.node_id.
53 * Use SMP memory barriers to ensure this. Otherwise requests will be sent
54 * to an outdated node_id if the generation was updated in the meantime due
55 * to a bus reset.
56 *
57 * Likewise, fw-core will take care to update .node_id before .generation so
58 * that whenever fw_device.generation is current WRT the actual bus generation,
59 * fw_device.node_id is guaranteed to be current too.
60 *
61 * The same applies to fw_device.card->node_id vs. fw_device.generation.
62 *
63 * fw_device.config_rom and fw_device.config_rom_length may be accessed during
64 * the lifetime of any fw_unit belonging to the fw_device, before device_del()
65 * was called on the last fw_unit. Alternatively, they may be accessed while
66 * holding fw_device_rwsem.
67 */
68struct fw_device {
69 atomic_t state;
70 struct fw_node *node;
71 int node_id;
72 int generation;
73 unsigned max_speed;
74 struct fw_card *card;
75 struct device device;
76
77 struct mutex client_list_mutex;
78 struct list_head client_list;
79
80 u32 *config_rom;
81 size_t config_rom_length;
82 int config_rom_retries;
83 unsigned cmc:1;
84 unsigned bc_implemented:2;
85
86 struct delayed_work work;
87 struct fw_attribute_group attribute_group;
88};
89
90static inline struct fw_device *fw_device(struct device *dev)
91{
92 return container_of(dev, struct fw_device, device);
93}
94
95static inline int fw_device_is_shutdown(struct fw_device *device)
96{
97 return atomic_read(&device->state) == FW_DEVICE_SHUTDOWN;
98}
99
100static inline struct fw_device *fw_device_get(struct fw_device *device)
101{
102 get_device(&device->device);
103
104 return device;
105}
106
107static inline void fw_device_put(struct fw_device *device)
108{
109 put_device(&device->device);
110}
111
112struct fw_device *fw_device_get_by_devt(dev_t devt);
113int fw_device_enable_phys_dma(struct fw_device *device);
114void fw_device_set_broadcast_channel(struct fw_device *device, int generation);
115
116void fw_device_cdev_update(struct fw_device *device);
117void fw_device_cdev_remove(struct fw_device *device);
118
119extern struct rw_semaphore fw_device_rwsem;
120extern struct idr fw_device_idr;
121extern int fw_cdev_major;
122
123/*
124 * fw_unit.directory must not be accessed after device_del(&fw_unit.device).
125 */
126struct fw_unit {
127 struct device device;
128 u32 *directory;
129 struct fw_attribute_group attribute_group;
130};
131
132static inline struct fw_unit *fw_unit(struct device *dev)
133{
134 return container_of(dev, struct fw_unit, device);
135}
136
137static inline struct fw_unit *fw_unit_get(struct fw_unit *unit)
138{
139 get_device(&unit->device);
140
141 return unit;
142}
143
144static inline void fw_unit_put(struct fw_unit *unit)
145{
146 put_device(&unit->device);
147}
148
149#define CSR_OFFSET 0x40
150#define CSR_LEAF 0x80
151#define CSR_DIRECTORY 0xc0
152
153#define CSR_DESCRIPTOR 0x01
154#define CSR_VENDOR 0x03
155#define CSR_HARDWARE_VERSION 0x04
156#define CSR_NODE_CAPABILITIES 0x0c
157#define CSR_UNIT 0x11
158#define CSR_SPECIFIER_ID 0x12
159#define CSR_VERSION 0x13
160#define CSR_DEPENDENT_INFO 0x14
161#define CSR_MODEL 0x17
162#define CSR_INSTANCE 0x18
163#define CSR_DIRECTORY_ID 0x20
164
165struct fw_csr_iterator {
166 u32 *p;
167 u32 *end;
168};
169
170void fw_csr_iterator_init(struct fw_csr_iterator *ci, u32 *p);
171int fw_csr_iterator_next(struct fw_csr_iterator *ci,
172 int *key, int *value);
173
174#define FW_MATCH_VENDOR 0x0001
175#define FW_MATCH_MODEL 0x0002
176#define FW_MATCH_SPECIFIER_ID 0x0004
177#define FW_MATCH_VERSION 0x0008
178
179struct fw_device_id {
180 u32 match_flags;
181 u32 vendor;
182 u32 model;
183 u32 specifier_id;
184 u32 version;
185 void *driver_data;
186};
187
188struct fw_driver {
189 struct device_driver driver;
190 /* Called when the parent device sits through a bus reset. */
191 void (*update) (struct fw_unit *unit);
192 const struct fw_device_id *id_table;
193};
194
195static inline struct fw_driver *fw_driver(struct device_driver *drv)
196{
197 return container_of(drv, struct fw_driver, driver);
198}
199
200extern const struct file_operations fw_device_ops;
201
202#endif /* __fw_device_h */
diff --git a/drivers/firewire/fw-topology.h b/drivers/firewire/fw-topology.h
deleted file mode 100644
index 3c497bb4fae4..000000000000
--- a/drivers/firewire/fw-topology.h
+++ /dev/null
@@ -1,77 +0,0 @@
1/*
2 * Copyright (C) 2003-2006 Kristian Hoegsberg <krh@bitplanet.net>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19#ifndef __fw_topology_h
20#define __fw_topology_h
21
22#include <linux/list.h>
23#include <linux/slab.h>
24
25#include <asm/atomic.h>
26
27enum {
28 FW_NODE_CREATED,
29 FW_NODE_UPDATED,
30 FW_NODE_DESTROYED,
31 FW_NODE_LINK_ON,
32 FW_NODE_LINK_OFF,
33 FW_NODE_INITIATED_RESET,
34};
35
36struct fw_node {
37 u16 node_id;
38 u8 color;
39 u8 port_count;
40 u8 link_on : 1;
41 u8 initiated_reset : 1;
42 u8 b_path : 1;
43 u8 phy_speed : 2; /* As in the self ID packet. */
44 u8 max_speed : 2; /* Minimum of all phy-speeds on the path from the
45 * local node to this node. */
46 u8 max_depth : 4; /* Maximum depth to any leaf node */
47 u8 max_hops : 4; /* Max hops in this sub tree */
48 atomic_t ref_count;
49
50 /* For serializing node topology into a list. */
51 struct list_head link;
52
53 /* Upper layer specific data. */
54 void *data;
55
56 struct fw_node *ports[0];
57};
58
59static inline struct fw_node *fw_node_get(struct fw_node *node)
60{
61 atomic_inc(&node->ref_count);
62
63 return node;
64}
65
66static inline void fw_node_put(struct fw_node *node)
67{
68 if (atomic_dec_and_test(&node->ref_count))
69 kfree(node);
70}
71
72struct fw_card;
73void fw_destroy_nodes(struct fw_card *card);
74
75int fw_compute_block_crc(u32 *block);
76
77#endif /* __fw_topology_h */
diff --git a/drivers/firewire/fw-transaction.h b/drivers/firewire/fw-transaction.h
deleted file mode 100644
index dfa799068f89..000000000000
--- a/drivers/firewire/fw-transaction.h
+++ /dev/null
@@ -1,446 +0,0 @@
1/*
2 * Copyright (C) 2003-2006 Kristian Hoegsberg <krh@bitplanet.net>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19#ifndef __fw_transaction_h
20#define __fw_transaction_h
21
22#include <linux/completion.h>
23#include <linux/device.h>
24#include <linux/dma-mapping.h>
25#include <linux/firewire-constants.h>
26#include <linux/kref.h>
27#include <linux/list.h>
28#include <linux/spinlock_types.h>
29#include <linux/timer.h>
30#include <linux/types.h>
31#include <linux/workqueue.h>
32
33#define TCODE_IS_READ_REQUEST(tcode) (((tcode) & ~1) == 4)
34#define TCODE_IS_BLOCK_PACKET(tcode) (((tcode) & 1) != 0)
35#define TCODE_IS_REQUEST(tcode) (((tcode) & 2) == 0)
36#define TCODE_IS_RESPONSE(tcode) (((tcode) & 2) != 0)
37#define TCODE_HAS_REQUEST_DATA(tcode) (((tcode) & 12) != 4)
38#define TCODE_HAS_RESPONSE_DATA(tcode) (((tcode) & 12) != 0)
39
40#define LOCAL_BUS 0xffc0
41
42#define SELFID_PORT_CHILD 0x3
43#define SELFID_PORT_PARENT 0x2
44#define SELFID_PORT_NCONN 0x1
45#define SELFID_PORT_NONE 0x0
46
47#define PHY_PACKET_CONFIG 0x0
48#define PHY_PACKET_LINK_ON 0x1
49#define PHY_PACKET_SELF_ID 0x2
50
51/* Bit fields _within_ the PHY registers. */
52#define PHY_LINK_ACTIVE 0x80
53#define PHY_CONTENDER 0x40
54#define PHY_BUS_RESET 0x40
55#define PHY_BUS_SHORT_RESET 0x40
56
57#define CSR_REGISTER_BASE 0xfffff0000000ULL
58
59/* register offsets relative to CSR_REGISTER_BASE */
60#define CSR_STATE_CLEAR 0x0
61#define CSR_STATE_SET 0x4
62#define CSR_NODE_IDS 0x8
63#define CSR_RESET_START 0xc
64#define CSR_SPLIT_TIMEOUT_HI 0x18
65#define CSR_SPLIT_TIMEOUT_LO 0x1c
66#define CSR_CYCLE_TIME 0x200
67#define CSR_BUS_TIME 0x204
68#define CSR_BUSY_TIMEOUT 0x210
69#define CSR_BUS_MANAGER_ID 0x21c
70#define CSR_BANDWIDTH_AVAILABLE 0x220
71#define CSR_CHANNELS_AVAILABLE 0x224
72#define CSR_CHANNELS_AVAILABLE_HI 0x224
73#define CSR_CHANNELS_AVAILABLE_LO 0x228
74#define CSR_BROADCAST_CHANNEL 0x234
75#define CSR_CONFIG_ROM 0x400
76#define CSR_CONFIG_ROM_END 0x800
77#define CSR_FCP_COMMAND 0xB00
78#define CSR_FCP_RESPONSE 0xD00
79#define CSR_FCP_END 0xF00
80#define CSR_TOPOLOGY_MAP 0x1000
81#define CSR_TOPOLOGY_MAP_END 0x1400
82#define CSR_SPEED_MAP 0x2000
83#define CSR_SPEED_MAP_END 0x3000
84
85#define BANDWIDTH_AVAILABLE_INITIAL 4915
86#define BROADCAST_CHANNEL_INITIAL (1 << 31 | 31)
87#define BROADCAST_CHANNEL_VALID (1 << 30)
88
89#define fw_notify(s, args...) printk(KERN_NOTICE KBUILD_MODNAME ": " s, ## args)
90#define fw_error(s, args...) printk(KERN_ERR KBUILD_MODNAME ": " s, ## args)
91
92static inline void fw_memcpy_from_be32(void *_dst, void *_src, size_t size)
93{
94 u32 *dst = _dst;
95 __be32 *src = _src;
96 int i;
97
98 for (i = 0; i < size / 4; i++)
99 dst[i] = be32_to_cpu(src[i]);
100}
101
102static inline void fw_memcpy_to_be32(void *_dst, void *_src, size_t size)
103{
104 fw_memcpy_from_be32(_dst, _src, size);
105}
106
107struct fw_card;
108struct fw_packet;
109struct fw_node;
110struct fw_request;
111
112struct fw_descriptor {
113 struct list_head link;
114 size_t length;
115 u32 immediate;
116 u32 key;
117 const u32 *data;
118};
119
120int fw_core_add_descriptor(struct fw_descriptor *desc);
121void fw_core_remove_descriptor(struct fw_descriptor *desc);
122
123typedef void (*fw_packet_callback_t)(struct fw_packet *packet,
124 struct fw_card *card, int status);
125
126typedef void (*fw_transaction_callback_t)(struct fw_card *card, int rcode,
127 void *data, size_t length,
128 void *callback_data);
129
130/*
131 * Important note: The callback must guarantee that either fw_send_response()
132 * or kfree() is called on the @request.
133 */
134typedef void (*fw_address_callback_t)(struct fw_card *card,
135 struct fw_request *request,
136 int tcode, int destination, int source,
137 int generation, int speed,
138 unsigned long long offset,
139 void *data, size_t length,
140 void *callback_data);
141
142struct fw_packet {
143 int speed;
144 int generation;
145 u32 header[4];
146 size_t header_length;
147 void *payload;
148 size_t payload_length;
149 dma_addr_t payload_bus;
150 u32 timestamp;
151
152 /*
153 * This callback is called when the packet transmission has
154 * completed; for successful transmission, the status code is
155 * the ack received from the destination, otherwise it's a
156 * negative errno: ENOMEM, ESTALE, ETIMEDOUT, ENODEV, EIO.
157 * The callback can be called from tasklet context and thus
158 * must never block.
159 */
160 fw_packet_callback_t callback;
161 int ack;
162 struct list_head link;
163 void *driver_data;
164};
165
166struct fw_transaction {
167 int node_id; /* The generation is implied; it is always the current. */
168 int tlabel;
169 int timestamp;
170 struct list_head link;
171
172 struct fw_packet packet;
173
174 /*
175 * The data passed to the callback is valid only during the
176 * callback.
177 */
178 fw_transaction_callback_t callback;
179 void *callback_data;
180};
181
182struct fw_address_handler {
183 u64 offset;
184 size_t length;
185 fw_address_callback_t address_callback;
186 void *callback_data;
187 struct list_head link;
188};
189
190struct fw_address_region {
191 u64 start;
192 u64 end;
193};
194
195extern const struct fw_address_region fw_high_memory_region;
196
197int fw_core_add_address_handler(struct fw_address_handler *handler,
198 const struct fw_address_region *region);
199void fw_core_remove_address_handler(struct fw_address_handler *handler);
200void fw_fill_response(struct fw_packet *response, u32 *request_header,
201 int rcode, void *payload, size_t length);
202void fw_send_response(struct fw_card *card,
203 struct fw_request *request, int rcode);
204
205extern struct bus_type fw_bus_type;
206
207struct fw_card {
208 const struct fw_card_driver *driver;
209 struct device *device;
210 struct kref kref;
211 struct completion done;
212
213 int node_id;
214 int generation;
215 int current_tlabel, tlabel_mask;
216 struct list_head transaction_list;
217 struct timer_list flush_timer;
218 unsigned long reset_jiffies;
219
220 unsigned long long guid;
221 unsigned max_receive;
222 int link_speed;
223 int config_rom_generation;
224
225 spinlock_t lock; /* Take this lock when handling the lists in
226 * this struct. */
227 struct fw_node *local_node;
228 struct fw_node *root_node;
229 struct fw_node *irm_node;
230 u8 color; /* must be u8 to match the definition in struct fw_node */
231 int gap_count;
232 bool beta_repeaters_present;
233
234 int index;
235
236 struct list_head link;
237
238 /* Work struct for BM duties. */
239 struct delayed_work work;
240 int bm_retries;
241 int bm_generation;
242
243 bool broadcast_channel_allocated;
244 u32 broadcast_channel;
245 u32 topology_map[(CSR_TOPOLOGY_MAP_END - CSR_TOPOLOGY_MAP) / 4];
246};
247
248static inline struct fw_card *fw_card_get(struct fw_card *card)
249{
250 kref_get(&card->kref);
251
252 return card;
253}
254
255void fw_card_release(struct kref *kref);
256
257static inline void fw_card_put(struct fw_card *card)
258{
259 kref_put(&card->kref, fw_card_release);
260}
261
262extern void fw_schedule_bm_work(struct fw_card *card, unsigned long delay);
263
264/*
265 * Check whether new_generation is the immediate successor of old_generation.
266 * Take counter roll-over at 255 (as per to OHCI) into account.
267 */
268static inline bool is_next_generation(int new_generation, int old_generation)
269{
270 return (new_generation & 0xff) == ((old_generation + 1) & 0xff);
271}
272
273/*
274 * The iso packet format allows for an immediate header/payload part
275 * stored in 'header' immediately after the packet info plus an
276 * indirect payload part that is pointer to by the 'payload' field.
277 * Applications can use one or the other or both to implement simple
278 * low-bandwidth streaming (e.g. audio) or more advanced
279 * scatter-gather streaming (e.g. assembling video frame automatically).
280 */
281
282struct fw_iso_packet {
283 u16 payload_length; /* Length of indirect payload. */
284 u32 interrupt : 1; /* Generate interrupt on this packet */
285 u32 skip : 1; /* Set to not send packet at all. */
286 u32 tag : 2;
287 u32 sy : 4;
288 u32 header_length : 8; /* Length of immediate header. */
289 u32 header[0];
290};
291
292#define FW_ISO_CONTEXT_TRANSMIT 0
293#define FW_ISO_CONTEXT_RECEIVE 1
294
295#define FW_ISO_CONTEXT_MATCH_TAG0 1
296#define FW_ISO_CONTEXT_MATCH_TAG1 2
297#define FW_ISO_CONTEXT_MATCH_TAG2 4
298#define FW_ISO_CONTEXT_MATCH_TAG3 8
299#define FW_ISO_CONTEXT_MATCH_ALL_TAGS 15
300
301struct fw_iso_context;
302
303typedef void (*fw_iso_callback_t)(struct fw_iso_context *context,
304 u32 cycle, size_t header_length,
305 void *header, void *data);
306
307/*
308 * An iso buffer is just a set of pages mapped for DMA in the
309 * specified direction. Since the pages are to be used for DMA, they
310 * are not mapped into the kernel virtual address space. We store the
311 * DMA address in the page private. The helper function
312 * fw_iso_buffer_map() will map the pages into a given vma.
313 */
314
315struct fw_iso_buffer {
316 enum dma_data_direction direction;
317 struct page **pages;
318 int page_count;
319};
320
321struct fw_iso_context {
322 struct fw_card *card;
323 int type;
324 int channel;
325 int speed;
326 size_t header_size;
327 fw_iso_callback_t callback;
328 void *callback_data;
329};
330
331int fw_iso_buffer_init(struct fw_iso_buffer *buffer, struct fw_card *card,
332 int page_count, enum dma_data_direction direction);
333int fw_iso_buffer_map(struct fw_iso_buffer *buffer, struct vm_area_struct *vma);
334void fw_iso_buffer_destroy(struct fw_iso_buffer *buffer, struct fw_card *card);
335
336struct fw_iso_context *fw_iso_context_create(struct fw_card *card,
337 int type, int channel, int speed, size_t header_size,
338 fw_iso_callback_t callback, void *callback_data);
339int fw_iso_context_queue(struct fw_iso_context *ctx,
340 struct fw_iso_packet *packet,
341 struct fw_iso_buffer *buffer,
342 unsigned long payload);
343int fw_iso_context_start(struct fw_iso_context *ctx,
344 int cycle, int sync, int tags);
345int fw_iso_context_stop(struct fw_iso_context *ctx);
346void fw_iso_context_destroy(struct fw_iso_context *ctx);
347
348void fw_iso_resource_manage(struct fw_card *card, int generation,
349 u64 channels_mask, int *channel, int *bandwidth, bool allocate);
350
351struct fw_card_driver {
352 /*
353 * Enable the given card with the given initial config rom.
354 * This function is expected to activate the card, and either
355 * enable the PHY or set the link_on bit and initiate a bus
356 * reset.
357 */
358 int (*enable)(struct fw_card *card, u32 *config_rom, size_t length);
359
360 int (*update_phy_reg)(struct fw_card *card, int address,
361 int clear_bits, int set_bits);
362
363 /*
364 * Update the config rom for an enabled card. This function
365 * should change the config rom that is presented on the bus
366 * an initiate a bus reset.
367 */
368 int (*set_config_rom)(struct fw_card *card,
369 u32 *config_rom, size_t length);
370
371 void (*send_request)(struct fw_card *card, struct fw_packet *packet);
372 void (*send_response)(struct fw_card *card, struct fw_packet *packet);
373 /* Calling cancel is valid once a packet has been submitted. */
374 int (*cancel_packet)(struct fw_card *card, struct fw_packet *packet);
375
376 /*
377 * Allow the specified node ID to do direct DMA out and in of
378 * host memory. The card will disable this for all node when
379 * a bus reset happens, so driver need to reenable this after
380 * bus reset. Returns 0 on success, -ENODEV if the card
381 * doesn't support this, -ESTALE if the generation doesn't
382 * match.
383 */
384 int (*enable_phys_dma)(struct fw_card *card,
385 int node_id, int generation);
386
387 u64 (*get_bus_time)(struct fw_card *card);
388
389 struct fw_iso_context *
390 (*allocate_iso_context)(struct fw_card *card,
391 int type, int channel, size_t header_size);
392 void (*free_iso_context)(struct fw_iso_context *ctx);
393
394 int (*start_iso)(struct fw_iso_context *ctx,
395 s32 cycle, u32 sync, u32 tags);
396
397 int (*queue_iso)(struct fw_iso_context *ctx,
398 struct fw_iso_packet *packet,
399 struct fw_iso_buffer *buffer,
400 unsigned long payload);
401
402 int (*stop_iso)(struct fw_iso_context *ctx);
403};
404
405int fw_core_initiate_bus_reset(struct fw_card *card, int short_reset);
406
407void fw_send_request(struct fw_card *card, struct fw_transaction *t,
408 int tcode, int destination_id, int generation, int speed,
409 unsigned long long offset, void *payload, size_t length,
410 fw_transaction_callback_t callback, void *callback_data);
411int fw_cancel_transaction(struct fw_card *card,
412 struct fw_transaction *transaction);
413void fw_flush_transactions(struct fw_card *card);
414int fw_run_transaction(struct fw_card *card, int tcode, int destination_id,
415 int generation, int speed, unsigned long long offset,
416 void *payload, size_t length);
417void fw_send_phy_config(struct fw_card *card,
418 int node_id, int generation, int gap_count);
419
420static inline int fw_stream_packet_destination_id(int tag, int channel, int sy)
421{
422 return tag << 14 | channel << 8 | sy;
423}
424
425/*
426 * Called by the topology code to inform the device code of node
427 * activity; found, lost, or updated nodes.
428 */
429void fw_node_event(struct fw_card *card, struct fw_node *node, int event);
430
431/* API used by card level drivers */
432
433void fw_card_initialize(struct fw_card *card,
434 const struct fw_card_driver *driver, struct device *device);
435int fw_card_add(struct fw_card *card,
436 u32 max_receive, u32 link_speed, u64 guid);
437void fw_core_remove_card(struct fw_card *card);
438void fw_core_handle_bus_reset(struct fw_card *card, int node_id,
439 int generation, int self_id_count, u32 *self_ids);
440void fw_core_handle_request(struct fw_card *card, struct fw_packet *request);
441void fw_core_handle_response(struct fw_card *card, struct fw_packet *packet);
442
443extern int fw_irm_set_broadcast_channel_register(struct device *dev,
444 void *data);
445
446#endif /* __fw_transaction_h */
diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/ohci.c
index 1180d0be0bb4..ecddd11b797a 100644
--- a/drivers/firewire/fw-ohci.c
+++ b/drivers/firewire/ohci.c
@@ -20,17 +20,25 @@
20 20
21#include <linux/compiler.h> 21#include <linux/compiler.h>
22#include <linux/delay.h> 22#include <linux/delay.h>
23#include <linux/device.h>
23#include <linux/dma-mapping.h> 24#include <linux/dma-mapping.h>
25#include <linux/firewire.h>
26#include <linux/firewire-constants.h>
24#include <linux/gfp.h> 27#include <linux/gfp.h>
25#include <linux/init.h> 28#include <linux/init.h>
26#include <linux/interrupt.h> 29#include <linux/interrupt.h>
30#include <linux/io.h>
27#include <linux/kernel.h> 31#include <linux/kernel.h>
32#include <linux/list.h>
28#include <linux/mm.h> 33#include <linux/mm.h>
29#include <linux/module.h> 34#include <linux/module.h>
30#include <linux/moduleparam.h> 35#include <linux/moduleparam.h>
31#include <linux/pci.h> 36#include <linux/pci.h>
32#include <linux/spinlock.h> 37#include <linux/spinlock.h>
38#include <linux/string.h>
33 39
40#include <asm/atomic.h>
41#include <asm/byteorder.h>
34#include <asm/page.h> 42#include <asm/page.h>
35#include <asm/system.h> 43#include <asm/system.h>
36 44
@@ -38,8 +46,8 @@
38#include <asm/pmac_feature.h> 46#include <asm/pmac_feature.h>
39#endif 47#endif
40 48
41#include "fw-ohci.h" 49#include "core.h"
42#include "fw-transaction.h" 50#include "ohci.h"
43 51
44#define DESCRIPTOR_OUTPUT_MORE 0 52#define DESCRIPTOR_OUTPUT_MORE 0
45#define DESCRIPTOR_OUTPUT_LAST (1 << 12) 53#define DESCRIPTOR_OUTPUT_LAST (1 << 12)
@@ -178,7 +186,7 @@ struct fw_ohci {
178 int node_id; 186 int node_id;
179 int generation; 187 int generation;
180 int request_generation; /* for timestamping incoming requests */ 188 int request_generation; /* for timestamping incoming requests */
181 u32 bus_seconds; 189 atomic_t bus_seconds;
182 190
183 bool use_dualbuffer; 191 bool use_dualbuffer;
184 bool old_uninorth; 192 bool old_uninorth;
@@ -231,7 +239,6 @@ static inline struct fw_ohci *fw_ohci(struct fw_card *card)
231#define OHCI1394_MAX_AT_RESP_RETRIES 0x2 239#define OHCI1394_MAX_AT_RESP_RETRIES 0x2
232#define OHCI1394_MAX_PHYS_RESP_RETRIES 0x8 240#define OHCI1394_MAX_PHYS_RESP_RETRIES 0x8
233 241
234#define FW_OHCI_MAJOR 240
235#define OHCI1394_REGISTER_SIZE 0x800 242#define OHCI1394_REGISTER_SIZE 0x800
236#define OHCI_LOOP_COUNT 500 243#define OHCI_LOOP_COUNT 500
237#define OHCI1394_PCI_HCI_Control 0x40 244#define OHCI1394_PCI_HCI_Control 0x40
@@ -1434,7 +1441,7 @@ static irqreturn_t irq_handler(int irq, void *data)
1434 if (event & OHCI1394_cycle64Seconds) { 1441 if (event & OHCI1394_cycle64Seconds) {
1435 cycle_time = reg_read(ohci, OHCI1394_IsochronousCycleTimer); 1442 cycle_time = reg_read(ohci, OHCI1394_IsochronousCycleTimer);
1436 if ((cycle_time & 0x80000000) == 0) 1443 if ((cycle_time & 0x80000000) == 0)
1437 ohci->bus_seconds++; 1444 atomic_inc(&ohci->bus_seconds);
1438 } 1445 }
1439 1446
1440 return IRQ_HANDLED; 1447 return IRQ_HANDLED;
@@ -1770,7 +1777,7 @@ static u64 ohci_get_bus_time(struct fw_card *card)
1770 u64 bus_time; 1777 u64 bus_time;
1771 1778
1772 cycle_time = reg_read(ohci, OHCI1394_IsochronousCycleTimer); 1779 cycle_time = reg_read(ohci, OHCI1394_IsochronousCycleTimer);
1773 bus_time = ((u64) ohci->bus_seconds << 32) | cycle_time; 1780 bus_time = ((u64)atomic_read(&ohci->bus_seconds) << 32) | cycle_time;
1774 1781
1775 return bus_time; 1782 return bus_time;
1776} 1783}
diff --git a/drivers/firewire/fw-ohci.h b/drivers/firewire/ohci.h
index a2fbb6240ca7..ba492d85c516 100644
--- a/drivers/firewire/fw-ohci.h
+++ b/drivers/firewire/ohci.h
@@ -1,5 +1,5 @@
1#ifndef __fw_ohci_h 1#ifndef _FIREWIRE_OHCI_H
2#define __fw_ohci_h 2#define _FIREWIRE_OHCI_H
3 3
4/* OHCI register map */ 4/* OHCI register map */
5 5
@@ -154,4 +154,4 @@
154 154
155#define OHCI1394_phy_tcode 0xe 155#define OHCI1394_phy_tcode 0xe
156 156
157#endif /* __fw_ohci_h */ 157#endif /* _FIREWIRE_OHCI_H */
diff --git a/drivers/firewire/fw-sbp2.c b/drivers/firewire/sbp2.c
index a70e66e78c7b..24c45635376a 100644
--- a/drivers/firewire/fw-sbp2.c
+++ b/drivers/firewire/sbp2.c
@@ -30,18 +30,28 @@
30 30
31#include <linux/blkdev.h> 31#include <linux/blkdev.h>
32#include <linux/bug.h> 32#include <linux/bug.h>
33#include <linux/completion.h>
33#include <linux/delay.h> 34#include <linux/delay.h>
34#include <linux/device.h> 35#include <linux/device.h>
35#include <linux/dma-mapping.h> 36#include <linux/dma-mapping.h>
37#include <linux/firewire.h>
38#include <linux/firewire-constants.h>
39#include <linux/init.h>
40#include <linux/jiffies.h>
36#include <linux/kernel.h> 41#include <linux/kernel.h>
42#include <linux/kref.h>
43#include <linux/list.h>
37#include <linux/mod_devicetable.h> 44#include <linux/mod_devicetable.h>
38#include <linux/module.h> 45#include <linux/module.h>
39#include <linux/moduleparam.h> 46#include <linux/moduleparam.h>
40#include <linux/scatterlist.h> 47#include <linux/scatterlist.h>
48#include <linux/slab.h>
49#include <linux/spinlock.h>
41#include <linux/string.h> 50#include <linux/string.h>
42#include <linux/stringify.h> 51#include <linux/stringify.h>
43#include <linux/timer.h>
44#include <linux/workqueue.h> 52#include <linux/workqueue.h>
53
54#include <asm/byteorder.h>
45#include <asm/system.h> 55#include <asm/system.h>
46 56
47#include <scsi/scsi.h> 57#include <scsi/scsi.h>
@@ -49,10 +59,6 @@
49#include <scsi/scsi_device.h> 59#include <scsi/scsi_device.h>
50#include <scsi/scsi_host.h> 60#include <scsi/scsi_host.h>
51 61
52#include "fw-device.h"
53#include "fw-topology.h"
54#include "fw-transaction.h"
55
56/* 62/*
57 * So far only bridges from Oxford Semiconductor are known to support 63 * So far only bridges from Oxford Semiconductor are known to support
58 * concurrent logins. Depending on firmware, four or two concurrent logins 64 * concurrent logins. Depending on firmware, four or two concurrent logins
@@ -174,6 +180,11 @@ struct sbp2_target {
174 int blocked; /* ditto */ 180 int blocked; /* ditto */
175}; 181};
176 182
183static struct fw_device *target_device(struct sbp2_target *tgt)
184{
185 return fw_parent_device(tgt->unit);
186}
187
177/* Impossible login_id, to detect logout attempt before successful login */ 188/* Impossible login_id, to detect logout attempt before successful login */
178#define INVALID_LOGIN_ID 0x10000 189#define INVALID_LOGIN_ID 0x10000
179 190
@@ -482,7 +493,7 @@ static void complete_transaction(struct fw_card *card, int rcode,
482static void sbp2_send_orb(struct sbp2_orb *orb, struct sbp2_logical_unit *lu, 493static void sbp2_send_orb(struct sbp2_orb *orb, struct sbp2_logical_unit *lu,
483 int node_id, int generation, u64 offset) 494 int node_id, int generation, u64 offset)
484{ 495{
485 struct fw_device *device = fw_device(lu->tgt->unit->device.parent); 496 struct fw_device *device = target_device(lu->tgt);
486 unsigned long flags; 497 unsigned long flags;
487 498
488 orb->pointer.high = 0; 499 orb->pointer.high = 0;
@@ -504,7 +515,7 @@ static void sbp2_send_orb(struct sbp2_orb *orb, struct sbp2_logical_unit *lu,
504 515
505static int sbp2_cancel_orbs(struct sbp2_logical_unit *lu) 516static int sbp2_cancel_orbs(struct sbp2_logical_unit *lu)
506{ 517{
507 struct fw_device *device = fw_device(lu->tgt->unit->device.parent); 518 struct fw_device *device = target_device(lu->tgt);
508 struct sbp2_orb *orb, *next; 519 struct sbp2_orb *orb, *next;
509 struct list_head list; 520 struct list_head list;
510 unsigned long flags; 521 unsigned long flags;
@@ -542,7 +553,7 @@ static int sbp2_send_management_orb(struct sbp2_logical_unit *lu, int node_id,
542 int generation, int function, 553 int generation, int function,
543 int lun_or_login_id, void *response) 554 int lun_or_login_id, void *response)
544{ 555{
545 struct fw_device *device = fw_device(lu->tgt->unit->device.parent); 556 struct fw_device *device = target_device(lu->tgt);
546 struct sbp2_management_orb *orb; 557 struct sbp2_management_orb *orb;
547 unsigned int timeout; 558 unsigned int timeout;
548 int retval = -ENOMEM; 559 int retval = -ENOMEM;
@@ -638,7 +649,7 @@ static int sbp2_send_management_orb(struct sbp2_logical_unit *lu, int node_id,
638 649
639static void sbp2_agent_reset(struct sbp2_logical_unit *lu) 650static void sbp2_agent_reset(struct sbp2_logical_unit *lu)
640{ 651{
641 struct fw_device *device = fw_device(lu->tgt->unit->device.parent); 652 struct fw_device *device = target_device(lu->tgt);
642 __be32 d = 0; 653 __be32 d = 0;
643 654
644 fw_run_transaction(device->card, TCODE_WRITE_QUADLET_REQUEST, 655 fw_run_transaction(device->card, TCODE_WRITE_QUADLET_REQUEST,
@@ -655,7 +666,7 @@ static void complete_agent_reset_write_no_wait(struct fw_card *card,
655 666
656static void sbp2_agent_reset_no_wait(struct sbp2_logical_unit *lu) 667static void sbp2_agent_reset_no_wait(struct sbp2_logical_unit *lu)
657{ 668{
658 struct fw_device *device = fw_device(lu->tgt->unit->device.parent); 669 struct fw_device *device = target_device(lu->tgt);
659 struct fw_transaction *t; 670 struct fw_transaction *t;
660 static __be32 d; 671 static __be32 d;
661 672
@@ -694,7 +705,7 @@ static inline void sbp2_allow_block(struct sbp2_logical_unit *lu)
694static void sbp2_conditionally_block(struct sbp2_logical_unit *lu) 705static void sbp2_conditionally_block(struct sbp2_logical_unit *lu)
695{ 706{
696 struct sbp2_target *tgt = lu->tgt; 707 struct sbp2_target *tgt = lu->tgt;
697 struct fw_card *card = fw_device(tgt->unit->device.parent)->card; 708 struct fw_card *card = target_device(tgt)->card;
698 struct Scsi_Host *shost = 709 struct Scsi_Host *shost =
699 container_of((void *)tgt, struct Scsi_Host, hostdata[0]); 710 container_of((void *)tgt, struct Scsi_Host, hostdata[0]);
700 unsigned long flags; 711 unsigned long flags;
@@ -718,7 +729,7 @@ static void sbp2_conditionally_block(struct sbp2_logical_unit *lu)
718static void sbp2_conditionally_unblock(struct sbp2_logical_unit *lu) 729static void sbp2_conditionally_unblock(struct sbp2_logical_unit *lu)
719{ 730{
720 struct sbp2_target *tgt = lu->tgt; 731 struct sbp2_target *tgt = lu->tgt;
721 struct fw_card *card = fw_device(tgt->unit->device.parent)->card; 732 struct fw_card *card = target_device(tgt)->card;
722 struct Scsi_Host *shost = 733 struct Scsi_Host *shost =
723 container_of((void *)tgt, struct Scsi_Host, hostdata[0]); 734 container_of((void *)tgt, struct Scsi_Host, hostdata[0]);
724 unsigned long flags; 735 unsigned long flags;
@@ -743,7 +754,7 @@ static void sbp2_conditionally_unblock(struct sbp2_logical_unit *lu)
743 */ 754 */
744static void sbp2_unblock(struct sbp2_target *tgt) 755static void sbp2_unblock(struct sbp2_target *tgt)
745{ 756{
746 struct fw_card *card = fw_device(tgt->unit->device.parent)->card; 757 struct fw_card *card = target_device(tgt)->card;
747 struct Scsi_Host *shost = 758 struct Scsi_Host *shost =
748 container_of((void *)tgt, struct Scsi_Host, hostdata[0]); 759 container_of((void *)tgt, struct Scsi_Host, hostdata[0]);
749 unsigned long flags; 760 unsigned long flags;
@@ -773,7 +784,7 @@ static void sbp2_release_target(struct kref *kref)
773 struct Scsi_Host *shost = 784 struct Scsi_Host *shost =
774 container_of((void *)tgt, struct Scsi_Host, hostdata[0]); 785 container_of((void *)tgt, struct Scsi_Host, hostdata[0]);
775 struct scsi_device *sdev; 786 struct scsi_device *sdev;
776 struct fw_device *device = fw_device(tgt->unit->device.parent); 787 struct fw_device *device = target_device(tgt);
777 788
778 /* prevent deadlocks */ 789 /* prevent deadlocks */
779 sbp2_unblock(tgt); 790 sbp2_unblock(tgt);
@@ -846,7 +857,7 @@ static void sbp2_queue_work(struct sbp2_logical_unit *lu, unsigned long delay)
846 */ 857 */
847static void sbp2_set_busy_timeout(struct sbp2_logical_unit *lu) 858static void sbp2_set_busy_timeout(struct sbp2_logical_unit *lu)
848{ 859{
849 struct fw_device *device = fw_device(lu->tgt->unit->device.parent); 860 struct fw_device *device = target_device(lu->tgt);
850 __be32 d = cpu_to_be32(SBP2_CYCLE_LIMIT | SBP2_RETRY_LIMIT); 861 __be32 d = cpu_to_be32(SBP2_CYCLE_LIMIT | SBP2_RETRY_LIMIT);
851 862
852 fw_run_transaction(device->card, TCODE_WRITE_QUADLET_REQUEST, 863 fw_run_transaction(device->card, TCODE_WRITE_QUADLET_REQUEST,
@@ -862,7 +873,7 @@ static void sbp2_login(struct work_struct *work)
862 struct sbp2_logical_unit *lu = 873 struct sbp2_logical_unit *lu =
863 container_of(work, struct sbp2_logical_unit, work.work); 874 container_of(work, struct sbp2_logical_unit, work.work);
864 struct sbp2_target *tgt = lu->tgt; 875 struct sbp2_target *tgt = lu->tgt;
865 struct fw_device *device = fw_device(tgt->unit->device.parent); 876 struct fw_device *device = target_device(tgt);
866 struct Scsi_Host *shost; 877 struct Scsi_Host *shost;
867 struct scsi_device *sdev; 878 struct scsi_device *sdev;
868 struct sbp2_login_response response; 879 struct sbp2_login_response response;
@@ -1110,7 +1121,7 @@ static struct scsi_host_template scsi_driver_template;
1110static int sbp2_probe(struct device *dev) 1121static int sbp2_probe(struct device *dev)
1111{ 1122{
1112 struct fw_unit *unit = fw_unit(dev); 1123 struct fw_unit *unit = fw_unit(dev);
1113 struct fw_device *device = fw_device(unit->device.parent); 1124 struct fw_device *device = fw_parent_device(unit);
1114 struct sbp2_target *tgt; 1125 struct sbp2_target *tgt;
1115 struct sbp2_logical_unit *lu; 1126 struct sbp2_logical_unit *lu;
1116 struct Scsi_Host *shost; 1127 struct Scsi_Host *shost;
@@ -1191,7 +1202,7 @@ static void sbp2_reconnect(struct work_struct *work)
1191 struct sbp2_logical_unit *lu = 1202 struct sbp2_logical_unit *lu =
1192 container_of(work, struct sbp2_logical_unit, work.work); 1203 container_of(work, struct sbp2_logical_unit, work.work);
1193 struct sbp2_target *tgt = lu->tgt; 1204 struct sbp2_target *tgt = lu->tgt;
1194 struct fw_device *device = fw_device(tgt->unit->device.parent); 1205 struct fw_device *device = target_device(tgt);
1195 int generation, node_id, local_node_id; 1206 int generation, node_id, local_node_id;
1196 1207
1197 if (fw_device_is_shutdown(device)) 1208 if (fw_device_is_shutdown(device))
@@ -1243,7 +1254,7 @@ static void sbp2_update(struct fw_unit *unit)
1243 struct sbp2_target *tgt = dev_get_drvdata(&unit->device); 1254 struct sbp2_target *tgt = dev_get_drvdata(&unit->device);
1244 struct sbp2_logical_unit *lu; 1255 struct sbp2_logical_unit *lu;
1245 1256
1246 fw_device_enable_phys_dma(fw_device(unit->device.parent)); 1257 fw_device_enable_phys_dma(fw_parent_device(unit));
1247 1258
1248 /* 1259 /*
1249 * Fw-core serializes sbp2_update() against sbp2_remove(). 1260 * Fw-core serializes sbp2_update() against sbp2_remove().
@@ -1259,9 +1270,10 @@ static void sbp2_update(struct fw_unit *unit)
1259#define SBP2_UNIT_SPEC_ID_ENTRY 0x0000609e 1270#define SBP2_UNIT_SPEC_ID_ENTRY 0x0000609e
1260#define SBP2_SW_VERSION_ENTRY 0x00010483 1271#define SBP2_SW_VERSION_ENTRY 0x00010483
1261 1272
1262static const struct fw_device_id sbp2_id_table[] = { 1273static const struct ieee1394_device_id sbp2_id_table[] = {
1263 { 1274 {
1264 .match_flags = FW_MATCH_SPECIFIER_ID | FW_MATCH_VERSION, 1275 .match_flags = IEEE1394_MATCH_SPECIFIER_ID |
1276 IEEE1394_MATCH_VERSION,
1265 .specifier_id = SBP2_UNIT_SPEC_ID_ENTRY, 1277 .specifier_id = SBP2_UNIT_SPEC_ID_ENTRY,
1266 .version = SBP2_SW_VERSION_ENTRY, 1278 .version = SBP2_SW_VERSION_ENTRY,
1267 }, 1279 },
@@ -1335,7 +1347,7 @@ static void complete_command_orb(struct sbp2_orb *base_orb,
1335{ 1347{
1336 struct sbp2_command_orb *orb = 1348 struct sbp2_command_orb *orb =
1337 container_of(base_orb, struct sbp2_command_orb, base); 1349 container_of(base_orb, struct sbp2_command_orb, base);
1338 struct fw_device *device = fw_device(orb->lu->tgt->unit->device.parent); 1350 struct fw_device *device = target_device(orb->lu->tgt);
1339 int result; 1351 int result;
1340 1352
1341 if (status != NULL) { 1353 if (status != NULL) {
@@ -1442,7 +1454,7 @@ static int sbp2_map_scatterlist(struct sbp2_command_orb *orb,
1442static int sbp2_scsi_queuecommand(struct scsi_cmnd *cmd, scsi_done_fn_t done) 1454static int sbp2_scsi_queuecommand(struct scsi_cmnd *cmd, scsi_done_fn_t done)
1443{ 1455{
1444 struct sbp2_logical_unit *lu = cmd->device->hostdata; 1456 struct sbp2_logical_unit *lu = cmd->device->hostdata;
1445 struct fw_device *device = fw_device(lu->tgt->unit->device.parent); 1457 struct fw_device *device = target_device(lu->tgt);
1446 struct sbp2_command_orb *orb; 1458 struct sbp2_command_orb *orb;
1447 int generation, retval = SCSI_MLQUEUE_HOST_BUSY; 1459 int generation, retval = SCSI_MLQUEUE_HOST_BUSY;
1448 1460
diff --git a/include/linux/firewire.h b/include/linux/firewire.h
new file mode 100644
index 000000000000..e584b7215e8b
--- /dev/null
+++ b/include/linux/firewire.h
@@ -0,0 +1,358 @@
1#ifndef _LINUX_FIREWIRE_H
2#define _LINUX_FIREWIRE_H
3
4#include <linux/completion.h>
5#include <linux/device.h>
6#include <linux/kernel.h>
7#include <linux/kref.h>
8#include <linux/list.h>
9#include <linux/mutex.h>
10#include <linux/spinlock.h>
11#include <linux/sysfs.h>
12#include <linux/timer.h>
13#include <linux/types.h>
14#include <linux/workqueue.h>
15
16#include <asm/atomic.h>
17#include <asm/byteorder.h>
18
19#define fw_notify(s, args...) printk(KERN_NOTICE KBUILD_MODNAME ": " s, ## args)
20#define fw_error(s, args...) printk(KERN_ERR KBUILD_MODNAME ": " s, ## args)
21
22static inline void fw_memcpy_from_be32(void *_dst, void *_src, size_t size)
23{
24 u32 *dst = _dst;
25 __be32 *src = _src;
26 int i;
27
28 for (i = 0; i < size / 4; i++)
29 dst[i] = be32_to_cpu(src[i]);
30}
31
32static inline void fw_memcpy_to_be32(void *_dst, void *_src, size_t size)
33{
34 fw_memcpy_from_be32(_dst, _src, size);
35}
36#define CSR_REGISTER_BASE 0xfffff0000000ULL
37
38/* register offsets are relative to CSR_REGISTER_BASE */
39#define CSR_STATE_CLEAR 0x0
40#define CSR_STATE_SET 0x4
41#define CSR_NODE_IDS 0x8
42#define CSR_RESET_START 0xc
43#define CSR_SPLIT_TIMEOUT_HI 0x18
44#define CSR_SPLIT_TIMEOUT_LO 0x1c
45#define CSR_CYCLE_TIME 0x200
46#define CSR_BUS_TIME 0x204
47#define CSR_BUSY_TIMEOUT 0x210
48#define CSR_BUS_MANAGER_ID 0x21c
49#define CSR_BANDWIDTH_AVAILABLE 0x220
50#define CSR_CHANNELS_AVAILABLE 0x224
51#define CSR_CHANNELS_AVAILABLE_HI 0x224
52#define CSR_CHANNELS_AVAILABLE_LO 0x228
53#define CSR_BROADCAST_CHANNEL 0x234
54#define CSR_CONFIG_ROM 0x400
55#define CSR_CONFIG_ROM_END 0x800
56#define CSR_FCP_COMMAND 0xB00
57#define CSR_FCP_RESPONSE 0xD00
58#define CSR_FCP_END 0xF00
59#define CSR_TOPOLOGY_MAP 0x1000
60#define CSR_TOPOLOGY_MAP_END 0x1400
61#define CSR_SPEED_MAP 0x2000
62#define CSR_SPEED_MAP_END 0x3000
63
64#define CSR_OFFSET 0x40
65#define CSR_LEAF 0x80
66#define CSR_DIRECTORY 0xc0
67
68#define CSR_DESCRIPTOR 0x01
69#define CSR_VENDOR 0x03
70#define CSR_HARDWARE_VERSION 0x04
71#define CSR_NODE_CAPABILITIES 0x0c
72#define CSR_UNIT 0x11
73#define CSR_SPECIFIER_ID 0x12
74#define CSR_VERSION 0x13
75#define CSR_DEPENDENT_INFO 0x14
76#define CSR_MODEL 0x17
77#define CSR_INSTANCE 0x18
78#define CSR_DIRECTORY_ID 0x20
79
80struct fw_csr_iterator {
81 u32 *p;
82 u32 *end;
83};
84
85void fw_csr_iterator_init(struct fw_csr_iterator *ci, u32 *p);
86int fw_csr_iterator_next(struct fw_csr_iterator *ci, int *key, int *value);
87
88extern struct bus_type fw_bus_type;
89
90struct fw_card_driver;
91struct fw_node;
92
93struct fw_card {
94 const struct fw_card_driver *driver;
95 struct device *device;
96 struct kref kref;
97 struct completion done;
98
99 int node_id;
100 int generation;
101 int current_tlabel;
102 u64 tlabel_mask;
103 struct list_head transaction_list;
104 struct timer_list flush_timer;
105 unsigned long reset_jiffies;
106
107 unsigned long long guid;
108 unsigned max_receive;
109 int link_speed;
110 int config_rom_generation;
111
112 spinlock_t lock; /* Take this lock when handling the lists in
113 * this struct. */
114 struct fw_node *local_node;
115 struct fw_node *root_node;
116 struct fw_node *irm_node;
117 u8 color; /* must be u8 to match the definition in struct fw_node */
118 int gap_count;
119 bool beta_repeaters_present;
120
121 int index;
122
123 struct list_head link;
124
125 /* Work struct for BM duties. */
126 struct delayed_work work;
127 int bm_retries;
128 int bm_generation;
129
130 bool broadcast_channel_allocated;
131 u32 broadcast_channel;
132 u32 topology_map[(CSR_TOPOLOGY_MAP_END - CSR_TOPOLOGY_MAP) / 4];
133};
134
135static inline struct fw_card *fw_card_get(struct fw_card *card)
136{
137 kref_get(&card->kref);
138
139 return card;
140}
141
142void fw_card_release(struct kref *kref);
143
144static inline void fw_card_put(struct fw_card *card)
145{
146 kref_put(&card->kref, fw_card_release);
147}
148
149struct fw_attribute_group {
150 struct attribute_group *groups[2];
151 struct attribute_group group;
152 struct attribute *attrs[12];
153};
154
155enum fw_device_state {
156 FW_DEVICE_INITIALIZING,
157 FW_DEVICE_RUNNING,
158 FW_DEVICE_GONE,
159 FW_DEVICE_SHUTDOWN,
160};
161
162/*
163 * Note, fw_device.generation always has to be read before fw_device.node_id.
164 * Use SMP memory barriers to ensure this. Otherwise requests will be sent
165 * to an outdated node_id if the generation was updated in the meantime due
166 * to a bus reset.
167 *
168 * Likewise, fw-core will take care to update .node_id before .generation so
169 * that whenever fw_device.generation is current WRT the actual bus generation,
170 * fw_device.node_id is guaranteed to be current too.
171 *
172 * The same applies to fw_device.card->node_id vs. fw_device.generation.
173 *
174 * fw_device.config_rom and fw_device.config_rom_length may be accessed during
175 * the lifetime of any fw_unit belonging to the fw_device, before device_del()
176 * was called on the last fw_unit. Alternatively, they may be accessed while
177 * holding fw_device_rwsem.
178 */
179struct fw_device {
180 atomic_t state;
181 struct fw_node *node;
182 int node_id;
183 int generation;
184 unsigned max_speed;
185 struct fw_card *card;
186 struct device device;
187
188 struct mutex client_list_mutex;
189 struct list_head client_list;
190
191 u32 *config_rom;
192 size_t config_rom_length;
193 int config_rom_retries;
194 unsigned is_local:1;
195 unsigned max_rec:4;
196 unsigned cmc:1;
197 unsigned irmc:1;
198 unsigned bc_implemented:2;
199
200 struct delayed_work work;
201 struct fw_attribute_group attribute_group;
202};
203
204static inline struct fw_device *fw_device(struct device *dev)
205{
206 return container_of(dev, struct fw_device, device);
207}
208
209static inline int fw_device_is_shutdown(struct fw_device *device)
210{
211 return atomic_read(&device->state) == FW_DEVICE_SHUTDOWN;
212}
213
214static inline struct fw_device *fw_device_get(struct fw_device *device)
215{
216 get_device(&device->device);
217
218 return device;
219}
220
221static inline void fw_device_put(struct fw_device *device)
222{
223 put_device(&device->device);
224}
225
226int fw_device_enable_phys_dma(struct fw_device *device);
227
228/*
229 * fw_unit.directory must not be accessed after device_del(&fw_unit.device).
230 */
231struct fw_unit {
232 struct device device;
233 u32 *directory;
234 struct fw_attribute_group attribute_group;
235};
236
237static inline struct fw_unit *fw_unit(struct device *dev)
238{
239 return container_of(dev, struct fw_unit, device);
240}
241
242static inline struct fw_unit *fw_unit_get(struct fw_unit *unit)
243{
244 get_device(&unit->device);
245
246 return unit;
247}
248
249static inline void fw_unit_put(struct fw_unit *unit)
250{
251 put_device(&unit->device);
252}
253
254static inline struct fw_device *fw_parent_device(struct fw_unit *unit)
255{
256 return fw_device(unit->device.parent);
257}
258
259struct ieee1394_device_id;
260
261struct fw_driver {
262 struct device_driver driver;
263 /* Called when the parent device sits through a bus reset. */
264 void (*update)(struct fw_unit *unit);
265 const struct ieee1394_device_id *id_table;
266};
267
268struct fw_packet;
269struct fw_request;
270
271typedef void (*fw_packet_callback_t)(struct fw_packet *packet,
272 struct fw_card *card, int status);
273typedef void (*fw_transaction_callback_t)(struct fw_card *card, int rcode,
274 void *data, size_t length,
275 void *callback_data);
276/*
277 * Important note: The callback must guarantee that either fw_send_response()
278 * or kfree() is called on the @request.
279 */
280typedef void (*fw_address_callback_t)(struct fw_card *card,
281 struct fw_request *request,
282 int tcode, int destination, int source,
283 int generation, int speed,
284 unsigned long long offset,
285 void *data, size_t length,
286 void *callback_data);
287
288struct fw_packet {
289 int speed;
290 int generation;
291 u32 header[4];
292 size_t header_length;
293 void *payload;
294 size_t payload_length;
295 dma_addr_t payload_bus;
296 u32 timestamp;
297
298 /*
299 * This callback is called when the packet transmission has
300 * completed; for successful transmission, the status code is
301 * the ack received from the destination, otherwise it's a
302 * negative errno: ENOMEM, ESTALE, ETIMEDOUT, ENODEV, EIO.
303 * The callback can be called from tasklet context and thus
304 * must never block.
305 */
306 fw_packet_callback_t callback;
307 int ack;
308 struct list_head link;
309 void *driver_data;
310};
311
312struct fw_transaction {
313 int node_id; /* The generation is implied; it is always the current. */
314 int tlabel;
315 int timestamp;
316 struct list_head link;
317
318 struct fw_packet packet;
319
320 /*
321 * The data passed to the callback is valid only during the
322 * callback.
323 */
324 fw_transaction_callback_t callback;
325 void *callback_data;
326};
327
328struct fw_address_handler {
329 u64 offset;
330 size_t length;
331 fw_address_callback_t address_callback;
332 void *callback_data;
333 struct list_head link;
334};
335
336struct fw_address_region {
337 u64 start;
338 u64 end;
339};
340
341extern const struct fw_address_region fw_high_memory_region;
342
343int fw_core_add_address_handler(struct fw_address_handler *handler,
344 const struct fw_address_region *region);
345void fw_core_remove_address_handler(struct fw_address_handler *handler);
346void fw_send_response(struct fw_card *card,
347 struct fw_request *request, int rcode);
348void fw_send_request(struct fw_card *card, struct fw_transaction *t,
349 int tcode, int destination_id, int generation, int speed,
350 unsigned long long offset, void *payload, size_t length,
351 fw_transaction_callback_t callback, void *callback_data);
352int fw_cancel_transaction(struct fw_card *card,
353 struct fw_transaction *transaction);
354int fw_run_transaction(struct fw_card *card, int tcode, int destination_id,
355 int generation, int speed, unsigned long long offset,
356 void *payload, size_t length);
357
358#endif /* _LINUX_FIREWIRE_H */
generated by cgit v1.2.2 (git 2.25.0) at 2025-11-17 23:05:35 -0500