diff options
| author | Clemens Ladisch <clemens@ladisch.de> | 2010-06-10 10:37:15 +0400 |
|---|---|---|
| committer | Clemens Ladisch <clemens@ladisch.de> | 2010-06-10 10:37:15 +0400 |
| commit | 7e0e314f198d5048b74c8f0ef9f4c1c02e5ecfc9 (patch) | |
| tree | 513fcf8f87f6b24121d4e4eb07e1345e29d81db2 /drivers/firewire/core-transaction.c | |
| parent | 4ffb7a6a066e4be4577976d1c08e237c7479770a (diff) | |
| download | linux-7e0e314f198d5048b74c8f0ef9f4c1c02e5ecfc9.tar.xz | |
firewire: core: add CSR abdicate support
Implement the abdicate bit, which is required for bus manager
capable nodes and tested by the Base 1394 Test Suite.
Finally, something to do at a command reset! :-)
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Diffstat (limited to 'drivers/firewire/core-transaction.c')
| -rw-r--r-- | drivers/firewire/core-transaction.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c index e0c6cce894cf..85a54da243e2 100644 --- a/drivers/firewire/core-transaction.c +++ b/drivers/firewire/core-transaction.c @@ -1008,6 +1008,10 @@ static u32 read_state_register(struct fw_card *card) /* Bit 8 (cmstr): */ value |= card->driver->read_csr_reg(card, CSR_STATE_CLEAR); + /* Bit 10 (abdicate): */ + if (card->csr_abdicate) + value |= CSR_STATE_BIT_ABDICATE; + return value; } @@ -1041,6 +1045,8 @@ static void handle_registers(struct fw_card *card, struct fw_request *request, } else if (tcode == TCODE_WRITE_QUADLET_REQUEST) { card->driver->write_csr_reg(card, CSR_STATE_CLEAR, be32_to_cpu(*data)); + if (*data & cpu_to_be32(CSR_STATE_BIT_ABDICATE)) + card->csr_abdicate = false; } else { rcode = RCODE_TYPE_ERROR; } @@ -1052,7 +1058,8 @@ static void handle_registers(struct fw_card *card, struct fw_request *request, } else if (tcode == TCODE_WRITE_QUADLET_REQUEST) { card->driver->write_csr_reg(card, CSR_STATE_SET, be32_to_cpu(*data)); - /* FIXME: implement abdicate */ + if (*data & cpu_to_be32(CSR_STATE_BIT_ABDICATE)) + card->csr_abdicate = true; } else { rcode = RCODE_TYPE_ERROR; } @@ -1070,7 +1077,9 @@ static void handle_registers(struct fw_card *card, struct fw_request *request, break; case CSR_RESET_START: - if (tcode != TCODE_WRITE_QUADLET_REQUEST) + if (tcode == TCODE_WRITE_QUADLET_REQUEST) + card->csr_abdicate = false; + else rcode = RCODE_TYPE_ERROR; break; |