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Merge tag 'firewire-updates' of git://git.kernel.org/pub/scm/linux/ke…
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…rnel/git/ieee1394/linux1394

Pull IEEE 1394 (FireWire) subsystem updates post v3.3 from Stefan Richter:

 - Some SBP-2 initiator fixes, side product from ongoing work on a target.

 - Reintroduction of an isochronous I/O feature of the older ieee1394 driver
   stack (flush buffer completions); it was evidently rarely used but not
   actually unused.  Matching libraw1394 code is already available.

 - Be sure to prefix all kernel log messages with device name or card name,
   and other logging related cleanups.

 - Misc other small cleanups, among them a small API change that affects
   sound/firewire/ too. Clemens Ladisch is aware of it.

* tag 'firewire-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394: (26 commits)
  firewire: allow explicit flushing of iso packet completions
  firewire: prevent dropping of completed iso packet header data
  firewire: ohci: factor out iso completion flushing code
  firewire: ohci: simplify iso header pointer arithmetic
  firewire: ohci: optimize control bit checks
  firewire: ohci: remove unused excess_bytes field
  firewire: ohci: copy_iso_headers(): make comment match the code
  firewire: cdev: fix IR multichannel event documentation
  firewire: ohci: fix too-early completion of IR multichannel buffers
  firewire: ohci: move runtime debug facility out of #ifdef
  firewire: tone down some diagnostic log messages
  firewire: sbp2: replace a GFP_ATOMIC allocation
  firewire: sbp2: Fix SCSI sense data mangling
  firewire: sbp2: Ignore SBP-2 targets on the local node
  firewire: sbp2: Take into account Unit_Unique_ID
  firewire: nosy: Use the macro DMA_BIT_MASK().
  firewire: core: convert AR-req handler lock from _irqsave to _bh
  firewire: core: fix race at address_handler unregistration
  firewire: core: remove obsolete comment
  firewire: core: prefix log messages with card name
  ...
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@torvalds
torvalds committed Mar 23, 2012
2 parents 7fc86a7 + d1bbd20 commit 3469940
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Showing 16 changed files with 478 additions and 325 deletions.
5 changes: 0 additions & 5 deletions drivers/firewire/Kconfig
View file
Original file line number Diff line number Diff line change
Expand Up @@ -28,11 +28,6 @@ config FIREWIRE_OHCI
To compile this driver as a module, say M here: The module will be
called firewire-ohci.

config FIREWIRE_OHCI_DEBUG
bool
depends on FIREWIRE_OHCI
default y

config FIREWIRE_SBP2
tristate "Storage devices (SBP-2 protocol)"
depends on FIREWIRE && SCSI
Expand Down
34 changes: 28 additions & 6 deletions drivers/firewire/core-card.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,22 @@

#include "core.h"

#define define_fw_printk_level(func, kern_level) \
void func(const struct fw_card *card, const char *fmt, ...) \
{ \
struct va_format vaf; \
va_list args; \
\
va_start(args, fmt); \
vaf.fmt = fmt; \
vaf.va = &args; \
printk(kern_level KBUILD_MODNAME " %s: %pV", \
dev_name(card->device), &vaf); \
va_end(args); \
}
define_fw_printk_level(fw_err, KERN_ERR);
define_fw_printk_level(fw_notice, KERN_NOTICE);

int fw_compute_block_crc(__be32 *block)
{
int length;
Expand Down Expand Up @@ -260,7 +276,7 @@ static void allocate_broadcast_channel(struct fw_card *card, int generation)
fw_iso_resource_manage(card, generation, 1ULL << 31,
&channel, &bandwidth, true);
if (channel != 31) {
fw_notify("failed to allocate broadcast channel\n");
fw_notice(card, "failed to allocate broadcast channel\n");
return;
}
card->broadcast_channel_allocated = true;
Expand Down Expand Up @@ -343,14 +359,14 @@ static void bm_work(struct work_struct *work)

if (!card->irm_node->link_on) {
new_root_id = local_id;
fw_notify("%s, making local node (%02x) root.\n",
fw_notice(card, "%s, making local node (%02x) root\n",
"IRM has link off", new_root_id);
goto pick_me;
}

if (irm_is_1394_1995_only && !keep_this_irm) {
new_root_id = local_id;
fw_notify("%s, making local node (%02x) root.\n",
fw_notice(card, "%s, making local node (%02x) root\n",
"IRM is not 1394a compliant", new_root_id);
goto pick_me;
}
Expand Down Expand Up @@ -405,7 +421,7 @@ static void bm_work(struct work_struct *work)
* root, and thus, IRM.
*/
new_root_id = local_id;
fw_notify("%s, making local node (%02x) root.\n",
fw_notice(card, "%s, making local node (%02x) root\n",
"BM lock failed", new_root_id);
goto pick_me;
}
Expand Down Expand Up @@ -478,8 +494,8 @@ static void bm_work(struct work_struct *work)
spin_unlock_irq(&card->lock);

if (do_reset) {
fw_notify("phy config: card %d, new root=%x, gap_count=%d\n",
card->index, new_root_id, gap_count);
fw_notice(card, "phy config: new root=%x, gap_count=%d\n",
new_root_id, gap_count);
fw_send_phy_config(card, new_root_id, generation, gap_count);
reset_bus(card, true);
/* Will allocate broadcast channel after the reset. */
Expand Down Expand Up @@ -634,6 +650,11 @@ static void dummy_flush_queue_iso(struct fw_iso_context *ctx)
{
}

static int dummy_flush_iso_completions(struct fw_iso_context *ctx)
{
return -ENODEV;
}

static const struct fw_card_driver dummy_driver_template = {
.read_phy_reg = dummy_read_phy_reg,
.update_phy_reg = dummy_update_phy_reg,
Expand All @@ -646,6 +667,7 @@ static const struct fw_card_driver dummy_driver_template = {
.set_iso_channels = dummy_set_iso_channels,
.queue_iso = dummy_queue_iso,
.flush_queue_iso = dummy_flush_queue_iso,
.flush_iso_completions = dummy_flush_iso_completions,
};

void fw_card_release(struct kref *kref)
Expand Down
24 changes: 18 additions & 6 deletions drivers/firewire/core-cdev.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -51,7 +51,7 @@
/*
* ABI version history is documented in linux/firewire-cdev.h.
*/
#define FW_CDEV_KERNEL_VERSION 4
#define FW_CDEV_KERNEL_VERSION 5
#define FW_CDEV_VERSION_EVENT_REQUEST2 4
#define FW_CDEV_VERSION_ALLOCATE_REGION_END 4

Expand Down Expand Up @@ -389,7 +389,7 @@ static void queue_bus_reset_event(struct client *client)

e = kzalloc(sizeof(*e), GFP_KERNEL);
if (e == NULL) {
fw_notify("Out of memory when allocating event\n");
fw_notice(client->device->card, "out of memory when allocating event\n");
return;
}

Expand Down Expand Up @@ -438,6 +438,7 @@ union ioctl_arg {
struct fw_cdev_send_phy_packet send_phy_packet;
struct fw_cdev_receive_phy_packets receive_phy_packets;
struct fw_cdev_set_iso_channels set_iso_channels;
struct fw_cdev_flush_iso flush_iso;
};

static int ioctl_get_info(struct client *client, union ioctl_arg *arg)
Expand Down Expand Up @@ -691,7 +692,7 @@ static void handle_request(struct fw_card *card, struct fw_request *request,
r = kmalloc(sizeof(*r), GFP_ATOMIC);
e = kmalloc(sizeof(*e), GFP_ATOMIC);
if (r == NULL || e == NULL) {
fw_notify("Out of memory when allocating event\n");
fw_notice(card, "out of memory when allocating event\n");
goto failed;
}
r->card = card;
Expand Down Expand Up @@ -928,7 +929,7 @@ static void iso_callback(struct fw_iso_context *context, u32 cycle,

e = kmalloc(sizeof(*e) + header_length, GFP_ATOMIC);
if (e == NULL) {
fw_notify("Out of memory when allocating event\n");
fw_notice(context->card, "out of memory when allocating event\n");
return;
}
e->interrupt.type = FW_CDEV_EVENT_ISO_INTERRUPT;
Expand All @@ -948,7 +949,7 @@ static void iso_mc_callback(struct fw_iso_context *context,

e = kmalloc(sizeof(*e), GFP_ATOMIC);
if (e == NULL) {
fw_notify("Out of memory when allocating event\n");
fw_notice(context->card, "out of memory when allocating event\n");
return;
}
e->interrupt.type = FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL;
Expand Down Expand Up @@ -1168,6 +1169,16 @@ static int ioctl_stop_iso(struct client *client, union ioctl_arg *arg)
return fw_iso_context_stop(client->iso_context);
}

static int ioctl_flush_iso(struct client *client, union ioctl_arg *arg)
{
struct fw_cdev_flush_iso *a = &arg->flush_iso;

if (client->iso_context == NULL || a->handle != 0)
return -EINVAL;

return fw_iso_context_flush_completions(client->iso_context);
}

static int ioctl_get_cycle_timer2(struct client *client, union ioctl_arg *arg)
{
struct fw_cdev_get_cycle_timer2 *a = &arg->get_cycle_timer2;
Expand Down Expand Up @@ -1548,7 +1559,7 @@ void fw_cdev_handle_phy_packet(struct fw_card *card, struct fw_packet *p)
list_for_each_entry(client, &card->phy_receiver_list, phy_receiver_link) {
e = kmalloc(sizeof(*e) + 8, GFP_ATOMIC);
if (e == NULL) {
fw_notify("Out of memory when allocating event\n");
fw_notice(card, "out of memory when allocating event\n");
break;
}
e->phy_packet.closure = client->phy_receiver_closure;
Expand Down Expand Up @@ -1589,6 +1600,7 @@ static int (* const ioctl_handlers[])(struct client *, union ioctl_arg *) = {
[0x15] = ioctl_send_phy_packet,
[0x16] = ioctl_receive_phy_packets,
[0x17] = ioctl_set_iso_channels,
[0x18] = ioctl_flush_iso,
};

static int dispatch_ioctl(struct client *client,
Expand Down
62 changes: 30 additions & 32 deletions drivers/firewire/core-device.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -485,6 +485,7 @@ static int read_rom(struct fw_device *device,
*/
static int read_config_rom(struct fw_device *device, int generation)
{
struct fw_card *card = device->card;
const u32 *old_rom, *new_rom;
u32 *rom, *stack;
u32 sp, key;
Expand Down Expand Up @@ -529,12 +530,12 @@ static int read_config_rom(struct fw_device *device, int generation)
*/
if ((rom[2] & 0x7) < device->max_speed ||
device->max_speed == SCODE_BETA ||
device->card->beta_repeaters_present) {
card->beta_repeaters_present) {
u32 dummy;

/* for S1600 and S3200 */
if (device->max_speed == SCODE_BETA)
device->max_speed = device->card->link_speed;
device->max_speed = card->link_speed;

while (device->max_speed > SCODE_100) {
if (read_rom(device, generation, 0, &dummy) ==
Expand Down Expand Up @@ -576,9 +577,9 @@ static int read_config_rom(struct fw_device *device, int generation)
* a firmware bug. Ignore this whole block, i.e.
* simply set a fake block length of 0.
*/
fw_error("skipped invalid ROM block %x at %llx\n",
rom[i],
i * 4 | CSR_REGISTER_BASE | CSR_CONFIG_ROM);
fw_err(card, "skipped invalid ROM block %x at %llx\n",
rom[i],
i * 4 | CSR_REGISTER_BASE | CSR_CONFIG_ROM);
rom[i] = 0;
end = i;
}
Expand All @@ -604,9 +605,10 @@ static int read_config_rom(struct fw_device *device, int generation)
* the ROM don't have to check offsets all the time.
*/
if (i + (rom[i] & 0xffffff) >= MAX_CONFIG_ROM_SIZE) {
fw_error("skipped unsupported ROM entry %x at %llx\n",
rom[i],
i * 4 | CSR_REGISTER_BASE | CSR_CONFIG_ROM);
fw_err(card,
"skipped unsupported ROM entry %x at %llx\n",
rom[i],
i * 4 | CSR_REGISTER_BASE | CSR_CONFIG_ROM);
rom[i] = 0;
continue;
}
Expand Down Expand Up @@ -641,6 +643,7 @@ static void fw_unit_release(struct device *dev)
{
struct fw_unit *unit = fw_unit(dev);

fw_device_put(fw_parent_device(unit));
kfree(unit);
}

Expand Down Expand Up @@ -672,7 +675,7 @@ static void create_units(struct fw_device *device)
*/
unit = kzalloc(sizeof(*unit), GFP_KERNEL);
if (unit == NULL) {
fw_error("failed to allocate memory for unit\n");
fw_err(device->card, "out of memory for unit\n");
continue;
}

Expand All @@ -692,6 +695,7 @@ static void create_units(struct fw_device *device)
if (device_register(&unit->device) < 0)
goto skip_unit;

fw_device_get(device);
continue;

skip_unit:
Expand Down Expand Up @@ -873,7 +877,7 @@ static int lookup_existing_device(struct device *dev, void *data)
smp_wmb(); /* update node_id before generation */
old->generation = card->generation;
old->config_rom_retries = 0;
fw_notify("rediscovered device %s\n", dev_name(dev));
fw_notice(card, "rediscovered device %s\n", dev_name(dev));

PREPARE_DELAYED_WORK(&old->work, fw_device_update);
fw_schedule_device_work(old, 0);
Expand Down Expand Up @@ -954,6 +958,7 @@ static void fw_device_init(struct work_struct *work)
{
struct fw_device *device =
container_of(work, struct fw_device, work.work);
struct fw_card *card = device->card;
struct device *revived_dev;
int minor, ret;

Expand All @@ -970,16 +975,16 @@ static void fw_device_init(struct work_struct *work)
fw_schedule_device_work(device, RETRY_DELAY);
} else {
if (device->node->link_on)
fw_notify("giving up on config rom for node id %x\n",
fw_notice(card, "giving up on Config ROM for node id %x\n",
device->node_id);
if (device->node == device->card->root_node)
fw_schedule_bm_work(device->card, 0);
if (device->node == card->root_node)
fw_schedule_bm_work(card, 0);
fw_device_release(&device->device);
}
return;
}

revived_dev = device_find_child(device->card->device,
revived_dev = device_find_child(card->device,
device, lookup_existing_device);
if (revived_dev) {
put_device(revived_dev);
Expand All @@ -1002,7 +1007,7 @@ static void fw_device_init(struct work_struct *work)

device->device.bus = &fw_bus_type;
device->device.type = &fw_device_type;
device->device.parent = device->card->device;
device->device.parent = card->device;
device->device.devt = MKDEV(fw_cdev_major, minor);
dev_set_name(&device->device, "fw%d", minor);

Expand All @@ -1014,7 +1019,7 @@ static void fw_device_init(struct work_struct *work)
&device->attribute_group);

if (device_add(&device->device)) {
fw_error("Failed to add device.\n");
fw_err(card, "failed to add device\n");
goto error_with_cdev;
}

Expand All @@ -1035,18 +1040,10 @@ static void fw_device_init(struct work_struct *work)
PREPARE_DELAYED_WORK(&device->work, fw_device_shutdown);
fw_schedule_device_work(device, SHUTDOWN_DELAY);
} else {
if (device->config_rom_retries)
fw_notify("created device %s: GUID %08x%08x, S%d00, "
"%d config ROM retries\n",
dev_name(&device->device),
device->config_rom[3], device->config_rom[4],
1 << device->max_speed,
device->config_rom_retries);
else
fw_notify("created device %s: GUID %08x%08x, S%d00\n",
dev_name(&device->device),
device->config_rom[3], device->config_rom[4],
1 << device->max_speed);
fw_notice(card, "created device %s: GUID %08x%08x, S%d00\n",
dev_name(&device->device),
device->config_rom[3], device->config_rom[4],
1 << device->max_speed);
device->config_rom_retries = 0;

set_broadcast_channel(device, device->generation);
Expand All @@ -1058,8 +1055,8 @@ static void fw_device_init(struct work_struct *work)
* just end up running the IRM work a couple of extra times -
* pretty harmless.
*/
if (device->node == device->card->root_node)
fw_schedule_bm_work(device->card, 0);
if (device->node == card->root_node)
fw_schedule_bm_work(card, 0);

return;

Expand Down Expand Up @@ -1163,12 +1160,13 @@ static void fw_device_refresh(struct work_struct *work)
FW_DEVICE_RUNNING) == FW_DEVICE_GONE)
goto gone;

fw_notify("refreshed device %s\n", dev_name(&device->device));
fw_notice(card, "refreshed device %s\n", dev_name(&device->device));
device->config_rom_retries = 0;
goto out;

give_up:
fw_notify("giving up on refresh of device %s\n", dev_name(&device->device));
fw_notice(card, "giving up on refresh of device %s\n",
dev_name(&device->device));
gone:
atomic_set(&device->state, FW_DEVICE_GONE);
PREPARE_DELAYED_WORK(&device->work, fw_device_shutdown);
Expand Down
6 changes: 6 additions & 0 deletions drivers/firewire/core-iso.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -192,6 +192,12 @@ void fw_iso_context_queue_flush(struct fw_iso_context *ctx)
}
EXPORT_SYMBOL(fw_iso_context_queue_flush);

int fw_iso_context_flush_completions(struct fw_iso_context *ctx)
{
return ctx->card->driver->flush_iso_completions(ctx);
}
EXPORT_SYMBOL(fw_iso_context_flush_completions);

int fw_iso_context_stop(struct fw_iso_context *ctx)
{
return ctx->card->driver->stop_iso(ctx);
Expand Down
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