diff options
| author | Olof Johansson <olof@lixom.net> | 2007-05-08 00:47:32 -0500 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-05-08 01:47:53 -0400 |
| commit | 6dfa7522d8b08c887bf9f4cb2600b89232f132f5 (patch) | |
| tree | f7c4257096c29d5c3d99399833e017bab8c443ae /drivers/net/pasemi_mac.c | |
| parent | 1b0335ea30bf85eecffd21be64b7653407d6259a (diff) | |
| download | blackbird-op-linux-6dfa7522d8b08c887bf9f4cb2600b89232f132f5.tar.gz blackbird-op-linux-6dfa7522d8b08c887bf9f4cb2600b89232f132f5.zip | |
pasemi_mac: Timer and interrupt fixes
Timer and interrupt fixes:
* Be pickier with what kind of interrupts are acked to avoid the device to
get out of sync with the driver state
* Set RX count threshhold to 1 (for NAPI interrupted mode), TX count
threshold to 32.
* Set timer thresholds to current max (~16ms).
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/pasemi_mac.c')
| -rw-r--r-- | drivers/net/pasemi_mac.c | 41 |
1 files changed, 29 insertions, 12 deletions
diff --git a/drivers/net/pasemi_mac.c b/drivers/net/pasemi_mac.c index 73e79f35a428..2bf13cf55358 100644 --- a/drivers/net/pasemi_mac.c +++ b/drivers/net/pasemi_mac.c @@ -526,18 +526,28 @@ static irqreturn_t pasemi_mac_rx_intr(int irq, void *data) struct pasemi_mac *mac = netdev_priv(dev); unsigned int reg; - if (!(*mac->rx_status & PAS_STATUS_INT)) + if (!(*mac->rx_status & PAS_STATUS_CAUSE_M)) return IRQ_NONE; - netif_rx_schedule(dev); - pci_write_config_dword(mac->iob_pdev, PAS_IOB_DMA_COM_TIMEOUTCFG, - PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT(0)); + if (*mac->rx_status & PAS_STATUS_ERROR) + printk("rx_status reported error\n"); + + /* Don't reset packet count so it won't fire again but clear + * all others. + */ + + pci_read_config_dword(mac->dma_pdev, PAS_DMA_RXINT_RCMDSTA(mac->dma_if), ®); - reg = PAS_IOB_DMA_RXCH_RESET_PINTC | PAS_IOB_DMA_RXCH_RESET_SINTC | - PAS_IOB_DMA_RXCH_RESET_DINTC; + reg = 0; + if (*mac->rx_status & PAS_STATUS_SOFT) + reg |= PAS_IOB_DMA_RXCH_RESET_SINTC; + if (*mac->rx_status & PAS_STATUS_ERROR) + reg |= PAS_IOB_DMA_RXCH_RESET_DINTC; if (*mac->rx_status & PAS_STATUS_TIMER) reg |= PAS_IOB_DMA_RXCH_RESET_TINTC; + netif_rx_schedule(dev); + pci_write_config_dword(mac->iob_pdev, PAS_IOB_DMA_RXCH_RESET(mac->dma_rxch), reg); @@ -551,14 +561,17 @@ static irqreturn_t pasemi_mac_tx_intr(int irq, void *data) struct pasemi_mac *mac = netdev_priv(dev); unsigned int reg; - if (!(*mac->tx_status & PAS_STATUS_INT)) + if (!(*mac->tx_status & PAS_STATUS_CAUSE_M)) return IRQ_NONE; pasemi_mac_clean_tx(mac); - reg = PAS_IOB_DMA_TXCH_RESET_PINTC | PAS_IOB_DMA_TXCH_RESET_SINTC; - if (*mac->tx_status & PAS_STATUS_TIMER) - reg |= PAS_IOB_DMA_TXCH_RESET_TINTC; + reg = PAS_IOB_DMA_TXCH_RESET_PINTC; + + if (*mac->tx_status & PAS_STATUS_SOFT) + reg |= PAS_IOB_DMA_TXCH_RESET_SINTC; + if (*mac->tx_status & PAS_STATUS_ERROR) + reg |= PAS_IOB_DMA_TXCH_RESET_DINTC; pci_write_config_dword(mac->iob_pdev, PAS_IOB_DMA_TXCH_RESET(mac->dma_txch), reg); @@ -593,14 +606,18 @@ static int pasemi_mac_open(struct net_device *dev) flags |= PAS_MAC_CFG_PCFG_TSR_1G | PAS_MAC_CFG_PCFG_SPD_1G; pci_write_config_dword(mac->iob_pdev, PAS_IOB_DMA_RXCH_CFG(mac->dma_rxch), - PAS_IOB_DMA_RXCH_CFG_CNTTH(30)); + PAS_IOB_DMA_RXCH_CFG_CNTTH(1)); + + pci_write_config_dword(mac->iob_pdev, PAS_IOB_DMA_TXCH_CFG(mac->dma_txch), + PAS_IOB_DMA_TXCH_CFG_CNTTH(32)); /* Clear out any residual packet count state from firmware */ pasemi_mac_restart_rx_intr(mac); pasemi_mac_restart_tx_intr(mac); + /* 0xffffff is max value, about 16ms */ pci_write_config_dword(mac->iob_pdev, PAS_IOB_DMA_COM_TIMEOUTCFG, - PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT(1000000)); + PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT(0xffffff)); pci_write_config_dword(mac->pdev, PAS_MAC_CFG_PCFG, flags); |
