Commit b7bfb2a7 authored by Linus Torvalds's avatar Linus Torvalds

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, ieee1394: update Kconfig help
  firewire, ieee1394: update MAINTAINERS entries
  firewire: ohci: always use packet-per-buffer mode for isochronous reception
  firewire: cdev: fix another memory leak in an error path
  firewire: fix use of multiple AV/C devices, allow multiple FCP listeners

Comments from Stefan:

   Distributors who still ship the old stack (ieee1394, ohci1394,
   raw1394, sbp2, eth1394 and more) should now switch to the new one
   (firewire-core, firewire-ohci, firewire-sbp2, firewire-net).  In the
   first iteration, those distributors might want to ship the old stack
   also (but blacklisted) as a fallback for their users if unforeseen
   problems with the newer replacement drivers are encountered.

   The older FireWire stack contains several known problems which are
   not going to be fixed; instead, those issues are addressed by the new
   stack.  An incomplete list of these issues is kept in bugzilla:

	http://bugzilla.kernel.org/show_bug.cgi?id=10046

   We have a guide on migration from the older to the newer stack:

	http://ieee1394.wiki.kernel.org/index.php/Juju_Migration
parents 5b889bf2 5d7db049
......@@ -2169,10 +2169,9 @@ F: drivers/hwmon/f75375s.c
F: include/linux/f75375s.h
FIREWIRE SUBSYSTEM
M: Kristian Hoegsberg <krh@redhat.com>
M: Stefan Richter <stefanr@s5r6.in-berlin.de>
L: linux1394-devel@lists.sourceforge.net
W: http://www.linux1394.org/
W: http://ieee1394.wiki.kernel.org/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6.git
S: Maintained
F: drivers/firewire/
......@@ -2705,22 +2704,14 @@ S: Supported
F: drivers/idle/i7300_idle.c
IEEE 1394 SUBSYSTEM
M: Ben Collins <ben.collins@ubuntu.com>
M: Stefan Richter <stefanr@s5r6.in-berlin.de>
L: linux1394-devel@lists.sourceforge.net
W: http://www.linux1394.org/
W: http://ieee1394.wiki.kernel.org/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6.git
S: Maintained
S: Obsolete
F: Documentation/debugging-via-ohci1394.txt
F: drivers/ieee1394/
IEEE 1394 RAW I/O DRIVER
M: Dan Dennedy <dan@dennedy.org>
M: Stefan Richter <stefanr@s5r6.in-berlin.de>
L: linux1394-devel@lists.sourceforge.net
S: Maintained
F: drivers/ieee1394/raw1394*
IEEE 802.15.4 SUBSYSTEM
M: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
M: Sergey Lapin <slapin@ossfans.org>
......
......@@ -28,7 +28,7 @@ source "drivers/md/Kconfig"
source "drivers/message/fusion/Kconfig"
source "drivers/ieee1394/Kconfig"
source "drivers/firewire/Kconfig"
source "drivers/message/i2o/Kconfig"
......
menu "IEEE 1394 (FireWire) support"
depends on PCI || BROKEN
# firewire-core does not depend on PCI but is
# not useful without PCI controller driver
comment "You can enable one or both FireWire driver stacks."
comment "See the help texts for more information."
comment "The newer stack is recommended."
config FIREWIRE
tristate "FireWire driver stack"
......@@ -15,16 +20,6 @@ config FIREWIRE
To compile this driver as a module, say M here: the module will be
called firewire-core.
This module functionally replaces ieee1394, raw1394, and video1394.
To access it from application programs, you generally need at least
libraw1394 v2. IIDC/DCAM applications need libdc1394 v2.
No libraries are required to access storage devices through the
firewire-sbp2 driver.
NOTE:
FireWire audio devices currently require the old drivers (ieee1394,
ohci1394, raw1394).
config FIREWIRE_OHCI
tristate "OHCI-1394 controllers"
depends on PCI && FIREWIRE
......@@ -34,22 +29,7 @@ config FIREWIRE_OHCI
is the only chipset in use, so say Y here.
To compile this driver as a module, say M here: The module will be
called firewire-ohci. It replaces ohci1394 of the classic IEEE 1394
stack.
NOTE:
If you want to install firewire-ohci and ohci1394 together, you
should configure them only as modules and blacklist the driver(s)
which you don't want to have auto-loaded. Add either
blacklist firewire-ohci
or
blacklist ohci1394
blacklist video1394
blacklist dv1394
to /etc/modprobe.conf or /etc/modprobe.d/* and update modprobe.conf
depending on your distribution.
called firewire-ohci.
config FIREWIRE_OHCI_DEBUG
bool
......@@ -66,8 +46,7 @@ config FIREWIRE_SBP2
like scanners.
To compile this driver as a module, say M here: The module will be
called firewire-sbp2. It replaces sbp2 of the classic IEEE 1394
stack.
called firewire-sbp2.
You should also enable support for disks, CD-ROMs, etc. in the SCSI
configuration section.
......@@ -83,5 +62,8 @@ config FIREWIRE_NET
NOTE, this driver is not stable yet!
To compile this driver as a module, say M here: The module will be
called firewire-net. It replaces eth1394 of the classic IEEE 1394
stack.
called firewire-net.
source "drivers/ieee1394/Kconfig"
endmenu
......@@ -601,8 +601,9 @@ static void release_request(struct client *client,
struct inbound_transaction_resource *r = container_of(resource,
struct inbound_transaction_resource, resource);
fw_send_response(client->device->card, r->request,
RCODE_CONFLICT_ERROR);
if (r->request)
fw_send_response(client->device->card, r->request,
RCODE_CONFLICT_ERROR);
kfree(r);
}
......@@ -645,7 +646,8 @@ static void handle_request(struct fw_card *card, struct fw_request *request,
failed:
kfree(r);
kfree(e);
fw_send_response(card, request, RCODE_CONFLICT_ERROR);
if (request)
fw_send_response(card, request, RCODE_CONFLICT_ERROR);
}
static void release_address_handler(struct client *client,
......@@ -715,15 +717,18 @@ static int ioctl_send_response(struct client *client, void *buffer)
r = container_of(resource, struct inbound_transaction_resource,
resource);
if (request->length < r->length)
r->length = request->length;
if (copy_from_user(r->data, u64_to_uptr(request->data), r->length)) {
ret = -EFAULT;
goto out;
if (r->request) {
if (request->length < r->length)
r->length = request->length;
if (copy_from_user(r->data, u64_to_uptr(request->data),
r->length)) {
ret = -EFAULT;
kfree(r->request);
goto out;
}
fw_send_response(client->device->card, r->request,
request->rcode);
}
fw_send_response(client->device->card, r->request, request->rcode);
out:
kfree(r);
......
......@@ -432,14 +432,20 @@ static struct fw_address_handler *lookup_overlapping_address_handler(
return NULL;
}
static bool is_enclosing_handler(struct fw_address_handler *handler,
unsigned long long offset, size_t length)
{
return handler->offset <= offset &&
offset + length <= handler->offset + handler->length;
}
static struct fw_address_handler *lookup_enclosing_address_handler(
struct list_head *list, unsigned long long offset, size_t length)
{
struct fw_address_handler *handler;
list_for_each_entry(handler, list, link) {
if (handler->offset <= offset &&
offset + length <= handler->offset + handler->length)
if (is_enclosing_handler(handler, offset, length))
return handler;
}
......@@ -465,6 +471,12 @@ const struct fw_address_region fw_unit_space_region =
{ .start = 0xfffff0000900ULL, .end = 0x1000000000000ULL, };
#endif /* 0 */
static bool is_in_fcp_region(u64 offset, size_t length)
{
return offset >= (CSR_REGISTER_BASE | CSR_FCP_COMMAND) &&
offset + length <= (CSR_REGISTER_BASE | CSR_FCP_END);
}
/**
* fw_core_add_address_handler - register for incoming requests
* @handler: callback
......@@ -477,8 +489,11 @@ const struct fw_address_region fw_unit_space_region =
* give the details of the particular request.
*
* Return value: 0 on success, non-zero otherwise.
*
* The start offset of the handler's address region is determined by
* fw_core_add_address_handler() and is returned in handler->offset.
*
* Address allocations are exclusive, except for the FCP registers.
*/
int fw_core_add_address_handler(struct fw_address_handler *handler,
const struct fw_address_region *region)
......@@ -498,10 +513,12 @@ int fw_core_add_address_handler(struct fw_address_handler *handler,
handler->offset = region->start;
while (handler->offset + handler->length <= region->end) {
other =
lookup_overlapping_address_handler(&address_handler_list,
handler->offset,
handler->length);
if (is_in_fcp_region(handler->offset, handler->length))
other = NULL;
else
other = lookup_overlapping_address_handler
(&address_handler_list,
handler->offset, handler->length);
if (other != NULL) {
handler->offset += other->length;
} else {
......@@ -668,6 +685,9 @@ static struct fw_request *allocate_request(struct fw_packet *p)
void fw_send_response(struct fw_card *card,
struct fw_request *request, int rcode)
{
if (WARN_ONCE(!request, "invalid for FCP address handlers"))
return;
/* unified transaction or broadcast transaction: don't respond */
if (request->ack != ACK_PENDING ||
HEADER_DESTINATION_IS_BROADCAST(request->request_header[0])) {
......@@ -686,26 +706,15 @@ void fw_send_response(struct fw_card *card,
}
EXPORT_SYMBOL(fw_send_response);
void fw_core_handle_request(struct fw_card *card, struct fw_packet *p)
static void handle_exclusive_region_request(struct fw_card *card,
struct fw_packet *p,
struct fw_request *request,
unsigned long long offset)
{
struct fw_address_handler *handler;
struct fw_request *request;
unsigned long long offset;
unsigned long flags;
int tcode, destination, source;
if (p->ack != ACK_PENDING && p->ack != ACK_COMPLETE)
return;
request = allocate_request(p);
if (request == NULL) {
/* FIXME: send statically allocated busy packet. */
return;
}
offset =
((unsigned long long)
HEADER_GET_OFFSET_HIGH(p->header[1]) << 32) | p->header[2];
tcode = HEADER_GET_TCODE(p->header[0]);
destination = HEADER_GET_DESTINATION(p->header[0]);
source = HEADER_GET_SOURCE(p->header[1]);
......@@ -732,6 +741,73 @@ void fw_core_handle_request(struct fw_card *card, struct fw_packet *p)
request->data, request->length,
handler->callback_data);
}
static void handle_fcp_region_request(struct fw_card *card,
struct fw_packet *p,
struct fw_request *request,
unsigned long long offset)
{
struct fw_address_handler *handler;
unsigned long flags;
int tcode, destination, source;
if ((offset != (CSR_REGISTER_BASE | CSR_FCP_COMMAND) &&
offset != (CSR_REGISTER_BASE | CSR_FCP_RESPONSE)) ||
request->length > 0x200) {
fw_send_response(card, request, RCODE_ADDRESS_ERROR);
return;
}
tcode = HEADER_GET_TCODE(p->header[0]);
destination = HEADER_GET_DESTINATION(p->header[0]);
source = HEADER_GET_SOURCE(p->header[1]);
if (tcode != TCODE_WRITE_QUADLET_REQUEST &&
tcode != TCODE_WRITE_BLOCK_REQUEST) {
fw_send_response(card, request, RCODE_TYPE_ERROR);
return;
}
spin_lock_irqsave(&address_handler_lock, flags);
list_for_each_entry(handler, &address_handler_list, link) {
if (is_enclosing_handler(handler, offset, request->length))
handler->address_callback(card, NULL, tcode,
destination, source,
p->generation, p->speed,
offset, request->data,
request->length,
handler->callback_data);
}
spin_unlock_irqrestore(&address_handler_lock, flags);
fw_send_response(card, request, RCODE_COMPLETE);
}
void fw_core_handle_request(struct fw_card *card, struct fw_packet *p)
{
struct fw_request *request;
unsigned long long offset;
if (p->ack != ACK_PENDING && p->ack != ACK_COMPLETE)
return;
request = allocate_request(p);
if (request == NULL) {
/* FIXME: send statically allocated busy packet. */
return;
}
offset = ((u64)HEADER_GET_OFFSET_HIGH(p->header[1]) << 32) |
p->header[2];
if (!is_in_fcp_region(offset, request->length))
handle_exclusive_region_request(card, p, request, offset);
else
handle_fcp_region_request(card, p, request, offset);
}
EXPORT_SYMBOL(fw_core_handle_request);
void fw_core_handle_response(struct fw_card *card, struct fw_packet *p)
......
......@@ -2226,7 +2226,6 @@ static int ohci_queue_iso_receive_dualbuffer(struct fw_iso_context *base,
if (rest == 0)
return -EINVAL;
/* FIXME: make packet-per-buffer/dual-buffer a context option */
while (rest > 0) {
d = context_get_descriptors(&ctx->context,
z + header_z, &d_bus);
......@@ -2470,7 +2469,10 @@ static int __devinit pci_probe(struct pci_dev *dev,
}
version = reg_read(ohci, OHCI1394_Version) & 0x00ff00ff;
#if 0
/* FIXME: make it a context option or remove dual-buffer mode */
ohci->use_dualbuffer = version >= OHCI_VERSION_1_1;
#endif
/* dual-buffer mode is broken if more than one IR context is active */
if (dev->vendor == PCI_VENDOR_ID_AGERE &&
......
menu "IEEE 1394 (FireWire) support"
depends on PCI || BROKEN
source "drivers/firewire/Kconfig"
config IEEE1394
tristate "Legacy alternative FireWire driver stack"
depends on PCI || BROKEN
......@@ -16,8 +11,13 @@ config IEEE1394
is the core support only, you will also need to select a driver for
your IEEE 1394 adapter.
To compile this driver as a module, say M here: the
module will be called ieee1394.
To compile this driver as a module, say M here: the module will be
called ieee1394.
NOTE:
ieee1394 is superseded by the newer firewire-core driver. See
http://ieee1394.wiki.kernel.org/index.php/Juju_Migration for
further information on how to switch to the new FireWire drivers.
config IEEE1394_OHCI1394
tristate "OHCI-1394 controllers"
......@@ -29,19 +29,23 @@ config IEEE1394_OHCI1394
use one of these chipsets. It should work with any OHCI-1394
compliant card, however.
To compile this driver as a module, say M here: the
module will be called ohci1394.
To compile this driver as a module, say M here: the module will be
called ohci1394.
NOTE:
ohci1394 is superseded by the newer firewire-ohci driver. See
http://ieee1394.wiki.kernel.org/index.php/Juju_Migration for
further information on how to switch to the new FireWire drivers.
If you want to install firewire-ohci and ohci1394 together, you
should configure them only as modules and blacklist the driver(s)
which you don't want to have auto-loaded. Add either
blacklist firewire-ohci
or
blacklist ohci1394
blacklist video1394
blacklist dv1394
or
blacklist firewire-ohci
to /etc/modprobe.conf or /etc/modprobe.d/* and update modprobe.conf
depending on your distribution.
......@@ -58,8 +62,8 @@ config IEEE1394_PCILYNX
Instruments PCILynx chip. Note: this driver is written for revision
2 of this chip and may not work with revision 0.
To compile this driver as a module, say M here: the
module will be called pcilynx.
To compile this driver as a module, say M here: the module will be
called pcilynx.
Only some old and now very rare PCI and CardBus cards and
PowerMacs G3 B&W contain the PCILynx controller. Therefore
......@@ -79,6 +83,14 @@ config IEEE1394_SBP2
You should also enable support for disks, CD-ROMs, etc. in the SCSI
configuration section.
To compile this driver as a module, say M here: the module will be
called sbp2.
NOTE:
sbp2 is superseded by the newer firewire-sbp2 driver. See
http://ieee1394.wiki.kernel.org/index.php/Juju_Migration for
further information on how to switch to the new FireWire drivers.
config IEEE1394_SBP2_PHYS_DMA
bool "Enable replacement for physical DMA in SBP2"
depends on IEEE1394_SBP2 && VIRT_TO_BUS && EXPERIMENTAL
......@@ -111,6 +123,11 @@ config IEEE1394_ETH1394
The module is called eth1394 although it does not emulate Ethernet.
NOTE:
eth1394 is superseded by the newer firewire-net driver. See
http://ieee1394.wiki.kernel.org/index.php/Juju_Migration for
further information on how to switch to the new FireWire drivers.
config IEEE1394_RAWIO
tristate "raw1394 userspace interface"
depends on IEEE1394
......@@ -123,6 +140,11 @@ config IEEE1394_RAWIO
To compile this driver as a module, say M here: the module will be
called raw1394.
NOTE:
raw1394 is superseded by the newer firewire-core driver. See
http://ieee1394.wiki.kernel.org/index.php/Juju_Migration for
further information on how to switch to the new FireWire drivers.
config IEEE1394_VIDEO1394
tristate "video1394 userspace interface"
depends on IEEE1394 && IEEE1394_OHCI1394
......@@ -136,13 +158,18 @@ config IEEE1394_VIDEO1394
To compile this driver as a module, say M here: the module will be
called video1394.
NOTE:
video1394 is superseded by the newer firewire-core driver. See
http://ieee1394.wiki.kernel.org/index.php/Juju_Migration for
further information on how to switch to the new FireWire drivers.
config IEEE1394_DV1394
tristate "dv1394 userspace interface (deprecated)"
depends on IEEE1394 && IEEE1394_OHCI1394
help
The dv1394 driver is unsupported and may be removed from Linux in a
future release. Its functionality is now provided by raw1394 together
with libraries such as libiec61883.
future release. Its functionality is now provided by either
raw1394 or firewire-core together with libraries such as libiec61883.
config IEEE1394_VERBOSEDEBUG
bool "Excessive debugging output"
......@@ -153,5 +180,3 @@ config IEEE1394_VERBOSEDEBUG
will quickly result in large amounts of data sent to the system log.
Say Y if you really need the debugging output. Everyone else says N.
endmenu
......@@ -202,14 +202,8 @@ static void handle_fcp(struct fw_card *card, struct fw_request *request,
unsigned long flags;
int su;
if ((tcode != TCODE_WRITE_QUADLET_REQUEST &&
tcode != TCODE_WRITE_BLOCK_REQUEST) ||
offset != CSR_REGISTER_BASE + CSR_FCP_RESPONSE ||
length == 0 ||
(((u8 *)payload)[0] & 0xf0) != 0) {
fw_send_response(card, request, RCODE_TYPE_ERROR);
if (length < 2 || (((u8 *)payload)[0] & 0xf0) != 0)
return;
}
su = ((u8 *)payload)[1] & 0x7;
......@@ -230,10 +224,8 @@ static void handle_fcp(struct fw_card *card, struct fw_request *request,
}
spin_unlock_irqrestore(&node_list_lock, flags);
if (fdtv) {
if (fdtv)
avc_recv(fdtv, payload, length);
fw_send_response(card, request, RCODE_COMPLETE);
}
}
static struct fw_address_handler fcp_handler = {
......
......@@ -340,6 +340,9 @@ struct fw_cdev_send_response {
* The @closure field is passed back to userspace in the response event.
* The @handle field is an out parameter, returning a handle to the allocated
* range to be used for later deallocation of the range.
*
* The address range is allocated on all local nodes. The address allocation
* is exclusive except for the FCP command and response registers.
*/
struct fw_cdev_allocate {
__u64 offset;
......
......@@ -248,8 +248,8 @@ typedef void (*fw_transaction_callback_t)(struct fw_card *card, int rcode,
void *data, size_t length,
void *callback_data);
/*
* Important note: The callback must guarantee that either fw_send_response()
* or kfree() is called on the @request.
* Important note: Except for the FCP registers, the callback must guarantee
* that either fw_send_response() or kfree() is called on the @request.
*/
typedef void (*fw_address_callback_t)(struct fw_card *card,
struct fw_request *request,
......
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