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Commit 34699403 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'firewire-updates' of git://git.kernel.org/pub/scm/linux/kernel/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
  ...
parents 7fc86a79 d1bbd209

drivers/firewire/Kconfig

+0 −5
Original line number Diff line number Diff line
@@ -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

drivers/firewire/core-card.c

+28 −6
Original line number Diff line number Diff line
@@ -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;
@@ -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;
@@ -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;

		}
@@ -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;

		}
@@ -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. */
@@ -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,
@@ -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)

drivers/firewire/core-cdev.c

+18 −6
Original line number Diff line number Diff line
@@ -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
@@ -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;

	}
@@ -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)
@@ -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;
@@ -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;
@@ -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;
@@ -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;
@@ -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;
@@ -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,

drivers/firewire/core-device.c

+30 −32
Original line number Diff line number Diff line
@@ -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;
@@ -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) ==
@@ -576,7 +577,7 @@ 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",

			fw_err(card, "skipped invalid ROM block %x at %llx\n",

			       rom[i],

			       i * 4 | CSR_REGISTER_BASE | CSR_CONFIG_ROM);

			rom[i] = 0;
@@ -604,7 +605,8 @@ 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",

				fw_err(card,

				       "skipped unsupported ROM entry %x at %llx\n",

				       rom[i],

				       i * 4 | CSR_REGISTER_BASE | CSR_CONFIG_ROM);

				rom[i] = 0;
@@ -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);

}
@@ -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;

		}
@@ -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:
@@ -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);
@@ -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;
@@ -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);
@@ -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);
@@ -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;

	}
@@ -1035,15 +1040,7 @@ 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",

		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);
@@ -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;
@@ -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);

drivers/firewire/core-iso.c

+6 −0
Original line number Diff line number Diff line
@@ -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);