pasemi_mac: clear out old errors on interface open
pasemi_mac: clear out old errors on interface open
Clear out any pending errors when an interface is brought up. Since the bits
are sticky, they might be from interface shutdown time after firmware has
used it, etc.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/pasemi_mac.c b/drivers/net/pasemi_mac.c
index ef1ebb4..967ff8c 100644
--- a/drivers/net/pasemi_mac.c
+++ b/drivers/net/pasemi_mac.c
@@ -903,16 +903,27 @@
/* enable rx if */
write_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if),
- PAS_DMA_RXINT_RCMDSTA_EN);
+ PAS_DMA_RXINT_RCMDSTA_EN |
+ PAS_DMA_RXINT_RCMDSTA_DROPS_M |
+ PAS_DMA_RXINT_RCMDSTA_BP |
+ PAS_DMA_RXINT_RCMDSTA_OO |
+ PAS_DMA_RXINT_RCMDSTA_BT);
/* enable rx channel */
write_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch),
PAS_DMA_RXCHAN_CCMDSTA_EN |
- PAS_DMA_RXCHAN_CCMDSTA_DU);
+ PAS_DMA_RXCHAN_CCMDSTA_DU |
+ PAS_DMA_RXCHAN_CCMDSTA_OD |
+ PAS_DMA_RXCHAN_CCMDSTA_FD |
+ PAS_DMA_RXCHAN_CCMDSTA_DT);
/* enable tx channel */
write_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch),
- PAS_DMA_TXCHAN_TCMDSTA_EN);
+ PAS_DMA_TXCHAN_TCMDSTA_EN |
+ PAS_DMA_TXCHAN_TCMDSTA_SZ |
+ PAS_DMA_TXCHAN_TCMDSTA_DB |
+ PAS_DMA_TXCHAN_TCMDSTA_DE |
+ PAS_DMA_TXCHAN_TCMDSTA_DA);
pasemi_mac_replenish_rx_ring(dev, RX_RING_SIZE);
@@ -987,7 +998,7 @@
static int pasemi_mac_close(struct net_device *dev)
{
struct pasemi_mac *mac = netdev_priv(dev);
- unsigned int stat;
+ unsigned int sta;
int retries;
if (mac->phydev) {
@@ -998,6 +1009,26 @@
netif_stop_queue(dev);
napi_disable(&mac->napi);
+ sta = read_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if));
+ if (sta & (PAS_DMA_RXINT_RCMDSTA_BP |
+ PAS_DMA_RXINT_RCMDSTA_OO |
+ PAS_DMA_RXINT_RCMDSTA_BT))
+ printk(KERN_DEBUG "pasemi_mac: rcmdsta error: 0x%08x\n", sta);
+
+ sta = read_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch));
+ if (sta & (PAS_DMA_RXCHAN_CCMDSTA_DU |
+ PAS_DMA_RXCHAN_CCMDSTA_OD |
+ PAS_DMA_RXCHAN_CCMDSTA_FD |
+ PAS_DMA_RXCHAN_CCMDSTA_DT))
+ printk(KERN_DEBUG "pasemi_mac: ccmdsta error: 0x%08x\n", sta);
+
+ sta = read_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch));
+ if (sta & (PAS_DMA_TXCHAN_TCMDSTA_SZ |
+ PAS_DMA_TXCHAN_TCMDSTA_DB |
+ PAS_DMA_TXCHAN_TCMDSTA_DE |
+ PAS_DMA_TXCHAN_TCMDSTA_DA))
+ printk(KERN_DEBUG "pasemi_mac: tcmdsta error: 0x%08x\n", sta);
+
/* Clean out any pending buffers */
pasemi_mac_clean_tx(mac);
pasemi_mac_clean_rx(mac, RX_RING_SIZE);
@@ -1008,33 +1039,33 @@
write_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch), PAS_DMA_RXCHAN_CCMDSTA_ST);
for (retries = 0; retries < MAX_RETRIES; retries++) {
- stat = read_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch));
- if (!(stat & PAS_DMA_TXCHAN_TCMDSTA_ACT))
+ sta = read_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch));
+ if (!(sta & PAS_DMA_TXCHAN_TCMDSTA_ACT))
break;
cond_resched();
}
- if (stat & PAS_DMA_TXCHAN_TCMDSTA_ACT)
+ if (sta & PAS_DMA_TXCHAN_TCMDSTA_ACT)
dev_err(&mac->dma_pdev->dev, "Failed to stop tx channel\n");
for (retries = 0; retries < MAX_RETRIES; retries++) {
- stat = read_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch));
- if (!(stat & PAS_DMA_RXCHAN_CCMDSTA_ACT))
+ sta = read_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch));
+ if (!(sta & PAS_DMA_RXCHAN_CCMDSTA_ACT))
break;
cond_resched();
}
- if (stat & PAS_DMA_RXCHAN_CCMDSTA_ACT)
+ if (sta & PAS_DMA_RXCHAN_CCMDSTA_ACT)
dev_err(&mac->dma_pdev->dev, "Failed to stop rx channel\n");
for (retries = 0; retries < MAX_RETRIES; retries++) {
- stat = read_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if));
- if (!(stat & PAS_DMA_RXINT_RCMDSTA_ACT))
+ sta = read_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if));
+ if (!(sta & PAS_DMA_RXINT_RCMDSTA_ACT))
break;
cond_resched();
}
- if (stat & PAS_DMA_RXINT_RCMDSTA_ACT)
+ if (sta & PAS_DMA_RXINT_RCMDSTA_ACT)
dev_err(&mac->dma_pdev->dev, "Failed to stop rx interface\n");
/* Then, disable the channel. This must be done separately from