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| author | Clemens Ladisch <clemens@ladisch.de> | 2010-06-10 10:34:13 +0400 |
|---|---|---|
| committer | Clemens Ladisch <clemens@ladisch.de> | 2010-06-10 10:34:13 +0400 |
| commit | 27a2329f8235d6ce637463f5d83e98d760ef006e (patch) | |
| tree | dcc3b1a62d92d407f38744a93914742e9eed1816 /drivers/firewire/ohci.c | |
| parent | a48777e03ad53777ed119a5f86dd22a6c5a378ad (diff) | |
| download | linux-27a2329f8235d6ce637463f5d83e98d760ef006e.tar.xz | |
firewire: add CSR BUSY_TIMEOUT support
Implement the BUSY_TIMEOUT register, which is required for nodes that
support retries.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Diffstat (limited to 'drivers/firewire/ohci.c')
| -rw-r--r-- | drivers/firewire/ohci.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index 3d4badb7c79b..9c588fd01250 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -1731,7 +1731,8 @@ static int ohci_enable(struct fw_card *card, reg_write(ohci, OHCI1394_ATRetries, OHCI1394_MAX_AT_REQ_RETRIES | (OHCI1394_MAX_AT_RESP_RETRIES << 4) | - (OHCI1394_MAX_PHYS_RESP_RETRIES << 8)); + (OHCI1394_MAX_PHYS_RESP_RETRIES << 8) | + (200 << 16)); seconds = lower_32_bits(get_seconds()); reg_write(ohci, OHCI1394_IsochronousCycleTimer, seconds << 25); @@ -2023,6 +2024,10 @@ static u32 ohci_read_csr_reg(struct fw_card *card, int csr_offset) spin_unlock_irqrestore(&ohci->lock, flags); return value; + case CSR_BUSY_TIMEOUT: + value = reg_read(ohci, OHCI1394_ATRetries); + return (value >> 4) & 0x0ffff00f; + default: WARN_ON(1); return 0; @@ -2053,6 +2058,13 @@ static void ohci_write_csr_reg(struct fw_card *card, int csr_offset, u32 value) spin_unlock_irqrestore(&ohci->lock, flags); break; + case CSR_BUSY_TIMEOUT: + value = (value & 0xf) | ((value & 0xf) << 4) | + ((value & 0xf) << 8) | ((value & 0x0ffff000) << 4); + reg_write(ohci, OHCI1394_ATRetries, value); + flush_writes(ohci); + break; + default: WARN_ON(1); break; |