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-rw-r--r--drivers/firewire/Kconfig44
-rw-r--r--drivers/firewire/core-cdev.c27
-rw-r--r--drivers/firewire/core-transaction.c118
-rw-r--r--drivers/firewire/ohci.c4
4 files changed, 129 insertions, 64 deletions
diff --git a/drivers/firewire/Kconfig b/drivers/firewire/Kconfig
index 13efcd362072..a9371b36a9b9 100644
--- a/drivers/firewire/Kconfig
+++ b/drivers/firewire/Kconfig
@@ -1,5 +1,10 @@
+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
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index 231e6ee5ba43..e6d63849e78e 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -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);
diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c
index 842739df23e2..495849eb13cc 100644
--- a/drivers/firewire/core-transaction.c
+++ b/drivers/firewire/core-transaction.c
@@ -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)
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index 96768e160866..a61571c63c59 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -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 &&
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 12:06:30 +0100