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Date: Sun, 13 Jul 2008 14:34:15 +0200
From: Florian Fainelli <florian.fainelli@...ecomint.eu>
To: netdev@...r.kernel.org
Cc: Francois Romieu <romieu@...zoreil.com>, jeff@...zik.org
Subject: [PATCH 07/10] r6040: use definitions for magic values in descriptor status
Define all the descriptor status the MAC can set.
Signed-off-by: Florian Fainelli <florian.fainelli@...ecomint.eu>
---
diff --git a/drivers/net/r6040.c b/drivers/net/r6040.c
index 9061ec1..973f1e8 100644
--- a/drivers/net/r6040.c
+++ b/drivers/net/r6040.c
@@ -138,6 +138,21 @@
#define MBCR_DEFAULT 0x012A /* MAC Bus Control Register */
#define MCAST_MAX 4 /* Max number multicast addresses to filter */
+/* Descriptor status */
+#define DSC_OWNER_MAC 0x8000 /* MAC is the owner of this descriptor */
+#define DSC_RX_OK 0x4000 /* RX was successful */
+#define DSC_RX_ERR 0x0800 /* RX PHY error */
+#define DSC_RX_ERR_DRI 0x0400 /* RX dribble packet */
+#define DSC_RX_ERR_BUF 0x0200 /* RX length exceeds buffer size */
+#define DSC_RX_ERR_LONG 0x0100 /* RX length > maximum packet length */
+#define DSC_RX_ERR_RUNT 0x0080 /* RX packet length < 64 byte */
+#define DSC_RX_ERR_CRC 0x0040 /* RX CRC error */
+#define DSC_RX_BCAST 0x0020 /* RX broadcast (no error) */
+#define DSC_RX_MCAST 0x0010 /* RX multicast (no error) */
+#define DSC_RX_MCH_HIT 0x0008 /* RX multicast hit in hash table (no error) */
+#define DSC_RX_MIDH_HIT 0x0004 /* RX MID table hit (no error) */
+#define DSC_RX_IDX_MID_MASK 3 /* RX mask for the index of matched MIDx */
+
/* PHY settings */
#define ICPLUS_PHY_ID 0x0243
@@ -324,7 +339,7 @@ static int r6040_alloc_rxbufs(struct net_device *dev)
desc->buf = cpu_to_le32(pci_map_single(lp->pdev,
desc->skb_ptr->data,
MAX_BUF_SIZE, PCI_DMA_FROMDEVICE));
- desc->status = 0x8000;
+ desc->status = DSC_OWNER_MAC;
desc = desc->vndescp;
} while (desc != lp->rx_ring);
@@ -541,25 +556,25 @@ static int r6040_rx(struct net_device *dev, int limit)
u16 err;
/* Limit not reached and the descriptor belongs to the CPU */
- while (count < limit && !(descptr->status & 0x8000)) {
+ while (count < limit && !(descptr->status & DSC_OWNER_MAC)) {
/* Read the descriptor status */
err = descptr->status;
/* Global error status set */
- if (err & 0x0800) {
+ if (err & DSC_RX_ERR) {
/* RX dribble */
- if (err & 0x0400)
+ if (err & DSC_RX_ERR_DRI)
dev->stats.rx_frame_errors++;
/* Buffer lenght exceeded */
- if (err & 0x0200)
+ if (err & DSC_RX_ERR_BUF)
dev->stats.rx_length_errors++;
/* Packet too long */
- if (err & 0x0100)
+ if (err & DSC_RX_ERR_LONG)
dev->stats.rx_length_errors++;
/* Packet < 64 bytes */
- if (err & 0x0080)
+ if (err & DSC_RX_ERR_RUNT)
dev->stats.rx_length_errors++;
/* CRC error */
- if (err & 0x0040) {
+ if (err & DSC_RX_ERR_CRC) {
spin_lock(&priv->lock);
dev->stats.rx_crc_errors++;
spin_unlock(&priv->lock);
@@ -596,7 +611,7 @@ static int r6040_rx(struct net_device *dev, int limit)
next_descr:
/* put the descriptor back to the MAC */
- descptr->status = 0x8000;
+ descptr->status = DSC_OWNER_MAC;
descptr = descptr->vndescp;
count++;
}
@@ -624,7 +639,7 @@ static void r6040_tx(struct net_device *dev)
if (err & (0x2000 | 0x4000))
dev->stats.tx_carrier_errors++;
- if (descptr->status & 0x8000)
+ if (descptr->status & DSC_OWNER_MAC)
break; /* Not complete */
skb_ptr = descptr->skb_ptr;
pci_unmap_single(priv->pdev, le32_to_cpu(descptr->buf),
@@ -874,7 +889,7 @@ static int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev)
descptr->skb_ptr = skb;
descptr->buf = cpu_to_le32(pci_map_single(lp->pdev,
skb->data, skb->len, PCI_DMA_TODEVICE));
- descptr->status = 0x8000;
+ descptr->status = DSC_OWNER_MAC;
/* Trigger the MAC to check the TX descriptor */
iowrite16(0x01, ioaddr + MTPR);
lp->tx_insert_ptr = descptr->vndescp;
--
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