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[PATCH] sis190: extract bits definition from SiS driver.

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extract bits definition from SiS driver

- fix the Rx stats;
- minor pieces of documentation.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Francois Romieu 2005-07-30 13:13:47 +02:00 committed by Jeff Garzik
parent 8b5641d4f1
commit bcad5e5378
1 changed files with 74 additions and 28 deletions
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102
drivers/net/sis190.c
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@ -64,8 +64,8 @@
#define MAC_ADDR_LEN 6
#define NUM_TX_DESC 64
#define NUM_RX_DESC 64
#define NUM_TX_DESC 64 /* [8..1024] */
#define NUM_RX_DESC 64 /* [8..8192] */
#define TX_RING_BYTES (NUM_TX_DESC * sizeof(struct TxDesc))
#define RX_RING_BYTES (NUM_RX_DESC * sizeof(struct RxDesc))
#define RX_BUF_SIZE 1536
@ -149,12 +149,6 @@ enum sis190_register_content {
RxHalt = 0x00000002,
TxHalt = 0x00000001,
/* RxStatusDesc */
RxRES = 0x00200000, // unused
RxCRC = 0x00080000,
RxRUNT = 0x00100000, // unused
RxRWT = 0x00400000, // unused
/* {Rx/Tx}CmdBits */
CmdReset = 0x10,
CmdRxEnb = 0x08, // unused
@ -212,15 +206,55 @@ struct RxDesc {
enum _DescStatusBit {
/* _Desc.status */
OWNbit = 0x80000000,
INTbit = 0x40000000,
DEFbit = 0x00200000,
CRCbit = 0x00020000,
PADbit = 0x00010000,
OWNbit = 0x80000000, // RXOWN/TXOWN
INTbit = 0x40000000, // RXINT/TXINT
CRCbit = 0x00020000, // CRCOFF/CRCEN
PADbit = 0x00010000, // PREADD/PADEN
/* _Desc.size */
RingEnd = (1 << 31),
/* _Desc.PSize */
RingEnd = 0x80000000,
/* TxDesc.status */
LSEN = 0x08000000, // TSO ? -- FR
IPCS = 0x04000000,
TCPCS = 0x02000000,
UDPCS = 0x01000000,
BSTEN = 0x00800000,
EXTEN = 0x00400000,
DEFEN = 0x00200000,
BKFEN = 0x00100000,
CRSEN = 0x00080000,
COLEN = 0x00040000,
THOL3 = 0x30000000,
THOL2 = 0x20000000,
THOL1 = 0x10000000,
THOL0 = 0x00000000,
/* RxDesc.status */
IPON = 0x20000000,
TCPON = 0x10000000,
UDPON = 0x08000000,
Wakup = 0x00400000,
Magic = 0x00200000,
Pause = 0x00100000,
DEFbit = 0x00200000,
BCAST = 0x000c0000,
MCAST = 0x00080000,
UCAST = 0x00040000,
/* RxDesc.PSize */
TAGON = 0x80000000,
RxDescCountMask = 0x7f000000, // multi-desc pkt when > 1 ? -- FR
ABORT = 0x00800000,
SHORT = 0x00400000,
LIMIT = 0x00200000,
MIIER = 0x00100000,
OVRUN = 0x00080000,
NIBON = 0x00040000,
COLON = 0x00020000,
CRCOK = 0x00010000,
RxSizeMask = 0x0000ffff
/*
* The asic could apparently do vlan, TSO, jumbo (sis191 only) and
* provide two (unused with Linux) Tx queues. No publically
* available documentation alas.
*/
};
enum sis190_eeprom_access_register_bits {
@ -487,6 +521,26 @@ static inline int sis190_try_rx_copy(struct sk_buff **sk_buff, int pkt_size,
return ret;
}
static inline int sis190_rx_pkt_err(u32 status, struct net_device_stats *stats)
{
#define ErrMask (OVRUN | SHORT | LIMIT | MIIER | NIBON | COLON | ABORT)
if ((status & CRCOK) && !(status & ErrMask))
return 0;
if (!(status & CRCOK))
stats->rx_crc_errors++;
else if (status & OVRUN)
stats->rx_over_errors++;
else if (status & (SHORT | LIMIT))
stats->rx_length_errors++;
else if (status & (MIIER | NIBON | COLON))
stats->rx_frame_errors++;
stats->rx_errors++;
return -1;
}
static int sis190_rx_interrupt(struct net_device *dev,
struct sis190_private *tp, void __iomem *ioaddr)
{
@ -510,19 +564,9 @@ static int sis190_rx_interrupt(struct net_device *dev,
// net_intr(tp, KERN_INFO "%s: Rx PSize = %08x.\n", dev->name,
// status);
if (status & RxCRC) {
net_intr(tp, KERN_INFO "%s: bad crc. status = %08x.\n",
dev->name, status);
stats->rx_errors++;
stats->rx_crc_errors++;
if (sis190_rx_pkt_err(status, stats) < 0)
sis190_give_to_asic(desc, tp->rx_buf_sz);
} else if (!(status & PADbit)) {
net_intr(tp, KERN_INFO "%s: bad pad. status = %08x.\n",
dev->name, status);
stats->rx_errors++;
stats->rx_length_errors++;
sis190_give_to_asic(desc, tp->rx_buf_sz);
} else {
else {
struct sk_buff *skb = tp->Rx_skbuff[entry];
int pkt_size = (status & RxSizeMask) - 4;
void (*pci_action)(struct pci_dev *, dma_addr_t,
@ -559,8 +603,10 @@ static int sis190_rx_interrupt(struct net_device *dev,
sis190_rx_skb(skb);
dev->last_rx = jiffies;
stats->rx_bytes += pkt_size;
stats->rx_packets++;
stats->rx_bytes += pkt_size;
if ((status & BCAST) == MCAST)
stats->multicast++;
}
}
count = cur_rx - tp->cur_rx;