* '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
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/
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>
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"
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
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
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.
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
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);
}
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,
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);
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;
}
{ .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
* 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)
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 {
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])) {
}
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]);
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)
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);
}
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
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"
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.
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
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
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
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
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"
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
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;
}
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 = {
* 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;
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,
git.samba.org / sfrench / cifs-2.6.git / commitdiff