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authorClemens Ladisch <clemens@ladisch.de>2010-06-10 10:25:19 +0400
committerClemens Ladisch <clemens@ladisch.de>2010-06-10 10:25:19 +0400
commit506f1a31932747f56a5029d5b3c14b1b68f41ccc (patch)
tree04dfb94980fc95cfc2c458fc62e6b77996c8145b /drivers/firewire/core-transaction.c
parent60d32970c5a32e8c4f340a9e41993759ad658ef2 (diff)
downloadlinux-506f1a31932747f56a5029d5b3c14b1b68f41ccc.tar.xz
firewire: add CSR NODE_IDS support
The NODE_IDS register, and especially its bus_id field, is quite useless because 1394.1 requires that the bus_id field always stays 0x3ff. However, the 1394 specification requires this register on all transaction capable nodes, and the Base 1394 Test Suite tests for it, so we better implement it. Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Diffstat (limited to 'drivers/firewire/core-transaction.c')
-rw-r--r--drivers/firewire/core-transaction.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c
index a4d8109edec2..16ffa27d23b7 100644
--- a/drivers/firewire/core-transaction.c
+++ b/drivers/firewire/core-transaction.c
@@ -1023,6 +1023,17 @@ static void handle_registers(struct fw_card *card, struct fw_request *request,
}
break;
+ case CSR_NODE_IDS:
+ if (tcode == TCODE_READ_QUADLET_REQUEST)
+ *data = cpu_to_be32(card->driver->
+ read_csr_reg(card, CSR_NODE_IDS));
+ else if (tcode == TCODE_WRITE_QUADLET_REQUEST)
+ card->driver->write_csr_reg(card, CSR_NODE_IDS,
+ be32_to_cpu(*data));
+ else
+ rcode = RCODE_TYPE_ERROR;
+ break;
+
case CSR_CYCLE_TIME:
if (TCODE_IS_READ_REQUEST(tcode) && length == 4)
*data = cpu_to_be32(card->driver->