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Message-Id: <d5bce509303adc7e6ae108c4decbaa93bb4ad744.1308810463.git.joe@perches.com>
Date: Wed, 22 Jun 2011 23:38:53 -0700
From: Joe Perches <joe@...ches.com>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/8] ariadne: Update style, neaten, restructure to eliminate prototypes
Convert to current logging styles.
Move code blocks to eliminate need for prototypes.
Use tabs for code indent and sandardize spacing.
Comment neatening.
Signed-off-by: Joe Perches <joe@...ches.com>
---
drivers/net/ariadne.c | 1267 +++++++++++++++++++++++--------------------------
1 files changed, 601 insertions(+), 666 deletions(-)
diff --git a/drivers/net/ariadne.c b/drivers/net/ariadne.c
index b7f45cd..7ed78f4 100644
--- a/drivers/net/ariadne.c
+++ b/drivers/net/ariadne.c
@@ -34,6 +34,9 @@
* - an MC68230 Parallel Interface/Timer configured as 2 parallel ports
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+/*#define DEBUG*/
+
#include <linux/module.h>
#include <linux/stddef.h>
#include <linux/kernel.h>
@@ -54,802 +57,734 @@
#include "ariadne.h"
-
#ifdef ARIADNE_DEBUG
int ariadne_debug = ARIADNE_DEBUG;
#else
int ariadne_debug = 1;
#endif
+/* Macros to Fix Endianness problems */
- /*
- * Macros to Fix Endianness problems
- */
-
- /* Swap the Bytes in a WORD */
-#define swapw(x) (((x>>8)&0x00ff)|((x<<8)&0xff00))
- /* Get the Low BYTE in a WORD */
-#define lowb(x) (x&0xff)
- /* Get the Swapped High WORD in a LONG */
-#define swhighw(x) ((((x)>>8)&0xff00)|(((x)>>24)&0x00ff))
- /* Get the Swapped Low WORD in a LONG */
-#define swloww(x) ((((x)<<8)&0xff00)|(((x)>>8)&0x00ff))
+/* Swap the Bytes in a WORD */
+#define swapw(x) (((x >> 8) & 0x00ff) | ((x << 8) & 0xff00))
+/* Get the Low BYTE in a WORD */
+#define lowb(x) (x & 0xff)
+/* Get the Swapped High WORD in a LONG */
+#define swhighw(x) ((((x) >> 8) & 0xff00) | (((x) >> 24) & 0x00ff))
+/* Get the Swapped Low WORD in a LONG */
+#define swloww(x) ((((x) << 8) & 0xff00) | (((x) >> 8) & 0x00ff))
-
- /*
- * Transmit/Receive Ring Definitions
- */
+/* Transmit/Receive Ring Definitions */
#define TX_RING_SIZE 5
#define RX_RING_SIZE 16
#define PKT_BUF_SIZE 1520
-
- /*
- * Private Device Data
- */
+/* Private Device Data */
struct ariadne_private {
- volatile struct TDRE *tx_ring[TX_RING_SIZE];
- volatile struct RDRE *rx_ring[RX_RING_SIZE];
- volatile u_short *tx_buff[TX_RING_SIZE];
- volatile u_short *rx_buff[RX_RING_SIZE];
- int cur_tx, cur_rx; /* The next free ring entry */
- int dirty_tx; /* The ring entries to be free()ed. */
- char tx_full;
+ volatile struct TDRE *tx_ring[TX_RING_SIZE];
+ volatile struct RDRE *rx_ring[RX_RING_SIZE];
+ volatile u_short *tx_buff[TX_RING_SIZE];
+ volatile u_short *rx_buff[RX_RING_SIZE];
+ int cur_tx, cur_rx; /* The next free ring entry */
+ int dirty_tx; /* The ring entries to be free()ed */
+ char tx_full;
};
-
- /*
- * Structure Created in the Ariadne's RAM Buffer
- */
+/* Structure Created in the Ariadne's RAM Buffer */
struct lancedata {
- struct TDRE tx_ring[TX_RING_SIZE];
- struct RDRE rx_ring[RX_RING_SIZE];
- u_short tx_buff[TX_RING_SIZE][PKT_BUF_SIZE/sizeof(u_short)];
- u_short rx_buff[RX_RING_SIZE][PKT_BUF_SIZE/sizeof(u_short)];
+ struct TDRE tx_ring[TX_RING_SIZE];
+ struct RDRE rx_ring[RX_RING_SIZE];
+ u_short tx_buff[TX_RING_SIZE][PKT_BUF_SIZE / sizeof(u_short)];
+ u_short rx_buff[RX_RING_SIZE][PKT_BUF_SIZE / sizeof(u_short)];
};
-static int ariadne_open(struct net_device *dev);
-static void ariadne_init_ring(struct net_device *dev);
-static netdev_tx_t ariadne_start_xmit(struct sk_buff *skb,
- struct net_device *dev);
-static void ariadne_tx_timeout(struct net_device *dev);
-static int ariadne_rx(struct net_device *dev);
-static void ariadne_reset(struct net_device *dev);
-static irqreturn_t ariadne_interrupt(int irq, void *data);
-static int ariadne_close(struct net_device *dev);
-static struct net_device_stats *ariadne_get_stats(struct net_device *dev);
-static void set_multicast_list(struct net_device *dev);
-
-
static void memcpyw(volatile u_short *dest, u_short *src, int len)
{
- while (len >= 2) {
- *(dest++) = *(src++);
- len -= 2;
- }
- if (len == 1)
- *dest = (*(u_char *)src)<<8;
+ while (len >= 2) {
+ *(dest++) = *(src++);
+ len -= 2;
+ }
+ if (len == 1)
+ *dest = (*(u_char *)src) << 8;
}
+static void ariadne_init_ring(struct net_device *dev)
+{
+ struct ariadne_private *priv = netdev_priv(dev);
+ volatile struct lancedata *lancedata = (struct lancedata *)dev->mem_start;
+ int i;
-static int __devinit ariadne_init_one(struct zorro_dev *z,
- const struct zorro_device_id *ent);
-static void __devexit ariadne_remove_one(struct zorro_dev *z);
-
-
-static struct zorro_device_id ariadne_zorro_tbl[] __devinitdata = {
- { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE },
- { 0 }
-};
-MODULE_DEVICE_TABLE(zorro, ariadne_zorro_tbl);
+ netif_stop_queue(dev);
-static struct zorro_driver ariadne_driver = {
- .name = "ariadne",
- .id_table = ariadne_zorro_tbl,
- .probe = ariadne_init_one,
- .remove = __devexit_p(ariadne_remove_one),
-};
+ priv->tx_full = 0;
+ priv->cur_rx = priv->cur_tx = 0;
+ priv->dirty_tx = 0;
+
+ /* Set up TX Ring */
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ volatile struct TDRE *t = &lancedata->tx_ring[i];
+ t->TMD0 = swloww(ARIADNE_RAM +
+ offsetof(struct lancedata, tx_buff[i]));
+ t->TMD1 = swhighw(ARIADNE_RAM +
+ offsetof(struct lancedata, tx_buff[i])) |
+ TF_STP | TF_ENP;
+ t->TMD2 = swapw((u_short)-PKT_BUF_SIZE);
+ t->TMD3 = 0;
+ priv->tx_ring[i] = &lancedata->tx_ring[i];
+ priv->tx_buff[i] = lancedata->tx_buff[i];
+ netdev_dbg(dev, "TX Entry %2d at %p, Buf at %p\n",
+ i, &lancedata->tx_ring[i], lancedata->tx_buff[i]);
+ }
-static const struct net_device_ops ariadne_netdev_ops = {
- .ndo_open = ariadne_open,
- .ndo_stop = ariadne_close,
- .ndo_start_xmit = ariadne_start_xmit,
- .ndo_tx_timeout = ariadne_tx_timeout,
- .ndo_get_stats = ariadne_get_stats,
- .ndo_set_multicast_list = set_multicast_list,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_set_mac_address = eth_mac_addr,
-};
+ /* Set up RX Ring */
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ volatile struct RDRE *r = &lancedata->rx_ring[i];
+ r->RMD0 = swloww(ARIADNE_RAM +
+ offsetof(struct lancedata, rx_buff[i]));
+ r->RMD1 = swhighw(ARIADNE_RAM +
+ offsetof(struct lancedata, rx_buff[i])) |
+ RF_OWN;
+ r->RMD2 = swapw((u_short)-PKT_BUF_SIZE);
+ r->RMD3 = 0x0000;
+ priv->rx_ring[i] = &lancedata->rx_ring[i];
+ priv->rx_buff[i] = lancedata->rx_buff[i];
+ netdev_dbg(dev, "RX Entry %2d at %p, Buf at %p\n",
+ i, &lancedata->rx_ring[i], lancedata->rx_buff[i]);
+ }
+}
-static int __devinit ariadne_init_one(struct zorro_dev *z,
- const struct zorro_device_id *ent)
+static int ariadne_rx(struct net_device *dev)
{
- unsigned long board = z->resource.start;
- unsigned long base_addr = board+ARIADNE_LANCE;
- unsigned long mem_start = board+ARIADNE_RAM;
- struct resource *r1, *r2;
- struct net_device *dev;
- struct ariadne_private *priv;
- int err;
-
- r1 = request_mem_region(base_addr, sizeof(struct Am79C960), "Am79C960");
- if (!r1)
- return -EBUSY;
- r2 = request_mem_region(mem_start, ARIADNE_RAM_SIZE, "RAM");
- if (!r2) {
- release_mem_region(base_addr, sizeof(struct Am79C960));
- return -EBUSY;
- }
-
- dev = alloc_etherdev(sizeof(struct ariadne_private));
- if (dev == NULL) {
- release_mem_region(base_addr, sizeof(struct Am79C960));
- release_mem_region(mem_start, ARIADNE_RAM_SIZE);
- return -ENOMEM;
- }
-
- priv = netdev_priv(dev);
-
- r1->name = dev->name;
- r2->name = dev->name;
-
- dev->dev_addr[0] = 0x00;
- dev->dev_addr[1] = 0x60;
- dev->dev_addr[2] = 0x30;
- dev->dev_addr[3] = (z->rom.er_SerialNumber>>16) & 0xff;
- dev->dev_addr[4] = (z->rom.er_SerialNumber>>8) & 0xff;
- dev->dev_addr[5] = z->rom.er_SerialNumber & 0xff;
- dev->base_addr = ZTWO_VADDR(base_addr);
- dev->mem_start = ZTWO_VADDR(mem_start);
- dev->mem_end = dev->mem_start+ARIADNE_RAM_SIZE;
-
- dev->netdev_ops = &ariadne_netdev_ops;
- dev->watchdog_timeo = 5*HZ;
-
- err = register_netdev(dev);
- if (err) {
- release_mem_region(base_addr, sizeof(struct Am79C960));
- release_mem_region(mem_start, ARIADNE_RAM_SIZE);
- free_netdev(dev);
- return err;
- }
- zorro_set_drvdata(z, dev);
+ struct ariadne_private *priv = netdev_priv(dev);
+ int entry = priv->cur_rx % RX_RING_SIZE;
+ int i;
- printk(KERN_INFO "%s: Ariadne at 0x%08lx, Ethernet Address %pM\n",
- dev->name, board, dev->dev_addr);
+ /* If we own the next entry, it's a new packet. Send it up */
+ while (!(lowb(priv->rx_ring[entry]->RMD1) & RF_OWN)) {
+ int status = lowb(priv->rx_ring[entry]->RMD1);
+
+ if (status != (RF_STP | RF_ENP)) { /* There was an error */
+ /* There is a tricky error noted by
+ * John Murphy <murf@...ftech.com> to Russ Nelson:
+ * Even with full-sized buffers it's possible for a
+ * jabber packet to use two buffers, with only the
+ * last correctly noting the error
+ */
+ /* Only count a general error at the end of a packet */
+ if (status & RF_ENP)
+ dev->stats.rx_errors++;
+ if (status & RF_FRAM)
+ dev->stats.rx_frame_errors++;
+ if (status & RF_OFLO)
+ dev->stats.rx_over_errors++;
+ if (status & RF_CRC)
+ dev->stats.rx_crc_errors++;
+ if (status & RF_BUFF)
+ dev->stats.rx_fifo_errors++;
+ priv->rx_ring[entry]->RMD1 &= 0xff00 | RF_STP | RF_ENP;
+ } else {
+ /* Malloc up new buffer, compatible with net-3 */
+ short pkt_len = swapw(priv->rx_ring[entry]->RMD3);
+ struct sk_buff *skb;
+
+ skb = dev_alloc_skb(pkt_len + 2);
+ if (skb == NULL) {
+ netdev_warn(dev, "Memory squeeze, deferring packet\n");
+ for (i = 0; i < RX_RING_SIZE; i++)
+ if (lowb(priv->rx_ring[(entry + i) % RX_RING_SIZE]->RMD1) & RF_OWN)
+ break;
+
+ if (i > RX_RING_SIZE - 2) {
+ dev->stats.rx_dropped++;
+ priv->rx_ring[entry]->RMD1 |= RF_OWN;
+ priv->cur_rx++;
+ }
+ break;
+ }
+
+
+ skb_reserve(skb, 2); /* 16 byte align */
+ skb_put(skb, pkt_len); /* Make room */
+ skb_copy_to_linear_data(skb,
+ (const void *)priv->rx_buff[entry],
+ pkt_len);
+ skb->protocol = eth_type_trans(skb, dev);
+ netdev_dbg(dev, "RX pkt type 0x%04x from %pM to %pM data 0x%08x len %d\n",
+ ((u_short *)skb->data)[6],
+ skb->data + 6, skb->data,
+ (int)skb->data, (int)skb->len);
+
+ netif_rx(skb);
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += pkt_len;
+ }
- return 0;
-}
+ priv->rx_ring[entry]->RMD1 |= RF_OWN;
+ entry = (++priv->cur_rx) % RX_RING_SIZE;
+ }
+ priv->cur_rx = priv->cur_rx % RX_RING_SIZE;
-static int ariadne_open(struct net_device *dev)
-{
- volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr;
- u_short in;
- u_long version;
- int i;
-
- /* Reset the LANCE */
- in = lance->Reset;
-
- /* Stop the LANCE */
- lance->RAP = CSR0; /* PCnet-ISA Controller Status */
- lance->RDP = STOP;
-
- /* Check the LANCE version */
- lance->RAP = CSR88; /* Chip ID */
- version = swapw(lance->RDP);
- lance->RAP = CSR89; /* Chip ID */
- version |= swapw(lance->RDP)<<16;
- if ((version & 0x00000fff) != 0x00000003) {
- printk(KERN_WARNING "ariadne_open: Couldn't find AMD Ethernet Chip\n");
- return -EAGAIN;
- }
- if ((version & 0x0ffff000) != 0x00003000) {
- printk(KERN_WARNING "ariadne_open: Couldn't find Am79C960 (Wrong part "
- "number = %ld)\n", (version & 0x0ffff000)>>12);
- return -EAGAIN;
- }
-#if 0
- printk(KERN_DEBUG "ariadne_open: Am79C960 (PCnet-ISA) Revision %ld\n",
- (version & 0xf0000000)>>28);
-#endif
+ /* We should check that at least two ring entries are free.
+ * If not, we should free one and mark stats->rx_dropped++
+ */
- ariadne_init_ring(dev);
-
- /* Miscellaneous Stuff */
- lance->RAP = CSR3; /* Interrupt Masks and Deferral Control */
- lance->RDP = 0x0000;
- lance->RAP = CSR4; /* Test and Features Control */
- lance->RDP = DPOLL|APAD_XMT|MFCOM|RCVCCOM|TXSTRTM|JABM;
-
- /* Set the Multicast Table */
- lance->RAP = CSR8; /* Logical Address Filter, LADRF[15:0] */
- lance->RDP = 0x0000;
- lance->RAP = CSR9; /* Logical Address Filter, LADRF[31:16] */
- lance->RDP = 0x0000;
- lance->RAP = CSR10; /* Logical Address Filter, LADRF[47:32] */
- lance->RDP = 0x0000;
- lance->RAP = CSR11; /* Logical Address Filter, LADRF[63:48] */
- lance->RDP = 0x0000;
-
- /* Set the Ethernet Hardware Address */
- lance->RAP = CSR12; /* Physical Address Register, PADR[15:0] */
- lance->RDP = ((u_short *)&dev->dev_addr[0])[0];
- lance->RAP = CSR13; /* Physical Address Register, PADR[31:16] */
- lance->RDP = ((u_short *)&dev->dev_addr[0])[1];
- lance->RAP = CSR14; /* Physical Address Register, PADR[47:32] */
- lance->RDP = ((u_short *)&dev->dev_addr[0])[2];
-
- /* Set the Init Block Mode */
- lance->RAP = CSR15; /* Mode Register */
- lance->RDP = 0x0000;
-
- /* Set the Transmit Descriptor Ring Pointer */
- lance->RAP = CSR30; /* Base Address of Transmit Ring */
- lance->RDP = swloww(ARIADNE_RAM+offsetof(struct lancedata, tx_ring));
- lance->RAP = CSR31; /* Base Address of transmit Ring */
- lance->RDP = swhighw(ARIADNE_RAM+offsetof(struct lancedata, tx_ring));
-
- /* Set the Receive Descriptor Ring Pointer */
- lance->RAP = CSR24; /* Base Address of Receive Ring */
- lance->RDP = swloww(ARIADNE_RAM+offsetof(struct lancedata, rx_ring));
- lance->RAP = CSR25; /* Base Address of Receive Ring */
- lance->RDP = swhighw(ARIADNE_RAM+offsetof(struct lancedata, rx_ring));
-
- /* Set the Number of RX and TX Ring Entries */
- lance->RAP = CSR76; /* Receive Ring Length */
- lance->RDP = swapw(((u_short)-RX_RING_SIZE));
- lance->RAP = CSR78; /* Transmit Ring Length */
- lance->RDP = swapw(((u_short)-TX_RING_SIZE));
-
- /* Enable Media Interface Port Auto Select (10BASE-2/10BASE-T) */
- lance->RAP = ISACSR2; /* Miscellaneous Configuration */
- lance->IDP = ASEL;
-
- /* LED Control */
- lance->RAP = ISACSR5; /* LED1 Status */
- lance->IDP = PSE|XMTE;
- lance->RAP = ISACSR6; /* LED2 Status */
- lance->IDP = PSE|COLE;
- lance->RAP = ISACSR7; /* LED3 Status */
- lance->IDP = PSE|RCVE;
-
- netif_start_queue(dev);
-
- i = request_irq(IRQ_AMIGA_PORTS, ariadne_interrupt, IRQF_SHARED,
- dev->name, dev);
- if (i) return i;
-
- lance->RAP = CSR0; /* PCnet-ISA Controller Status */
- lance->RDP = INEA|STRT;
-
- return 0;
+ return 0;
}
-
-static void ariadne_init_ring(struct net_device *dev)
+static irqreturn_t ariadne_interrupt(int irq, void *data)
{
- struct ariadne_private *priv = netdev_priv(dev);
- volatile struct lancedata *lancedata = (struct lancedata *)dev->mem_start;
- int i;
-
- netif_stop_queue(dev);
-
- priv->tx_full = 0;
- priv->cur_rx = priv->cur_tx = 0;
- priv->dirty_tx = 0;
-
- /* Set up TX Ring */
- for (i = 0; i < TX_RING_SIZE; i++) {
- volatile struct TDRE *t = &lancedata->tx_ring[i];
- t->TMD0 = swloww(ARIADNE_RAM+offsetof(struct lancedata, tx_buff[i]));
- t->TMD1 = swhighw(ARIADNE_RAM+offsetof(struct lancedata, tx_buff[i])) |
- TF_STP | TF_ENP;
- t->TMD2 = swapw((u_short)-PKT_BUF_SIZE);
- t->TMD3 = 0;
- priv->tx_ring[i] = &lancedata->tx_ring[i];
- priv->tx_buff[i] = lancedata->tx_buff[i];
-#if 0
- printk(KERN_DEBUG "TX Entry %2d at %p, Buf at %p\n", i,
- &lancedata->tx_ring[i], lancedata->tx_buff[i]);
-#endif
- }
-
- /* Set up RX Ring */
- for (i = 0; i < RX_RING_SIZE; i++) {
- volatile struct RDRE *r = &lancedata->rx_ring[i];
- r->RMD0 = swloww(ARIADNE_RAM+offsetof(struct lancedata, rx_buff[i]));
- r->RMD1 = swhighw(ARIADNE_RAM+offsetof(struct lancedata, rx_buff[i])) |
- RF_OWN;
- r->RMD2 = swapw((u_short)-PKT_BUF_SIZE);
- r->RMD3 = 0x0000;
- priv->rx_ring[i] = &lancedata->rx_ring[i];
- priv->rx_buff[i] = lancedata->rx_buff[i];
-#if 0
- printk(KERN_DEBUG "RX Entry %2d at %p, Buf at %p\n", i,
- &lancedata->rx_ring[i], lancedata->rx_buff[i]);
+ struct net_device *dev = (struct net_device *)data;
+ volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr;
+ struct ariadne_private *priv;
+ int csr0, boguscnt;
+ int handled = 0;
+
+ lance->RAP = CSR0; /* PCnet-ISA Controller Status */
+
+ if (!(lance->RDP & INTR)) /* Check if any interrupt has been */
+ return IRQ_NONE; /* generated by the board */
+
+ priv = netdev_priv(dev);
+
+ boguscnt = 10;
+ while ((csr0 = lance->RDP) & (ERR | RINT | TINT) && --boguscnt >= 0) {
+ /* Acknowledge all of the current interrupt sources ASAP */
+ lance->RDP = csr0 & ~(INEA | TDMD | STOP | STRT | INIT);
+
+#ifdef DEBUG
+ if (ariadne_debug > 5) {
+ netdev_dbg(dev, "interrupt csr0=%#02x new csr=%#02x [",
+ csr0, lance->RDP);
+ if (csr0 & INTR)
+ pr_cont(" INTR");
+ if (csr0 & INEA)
+ pr_cont(" INEA");
+ if (csr0 & RXON)
+ pr_cont(" RXON");
+ if (csr0 & TXON)
+ pr_cont(" TXON");
+ if (csr0 & TDMD)
+ pr_cont(" TDMD");
+ if (csr0 & STOP)
+ pr_cont(" STOP");
+ if (csr0 & STRT)
+ pr_cont(" STRT");
+ if (csr0 & INIT)
+ pr_cont(" INIT");
+ if (csr0 & ERR)
+ pr_cont(" ERR");
+ if (csr0 & BABL)
+ pr_cont(" BABL");
+ if (csr0 & CERR)
+ pr_cont(" CERR");
+ if (csr0 & MISS)
+ pr_cont(" MISS");
+ if (csr0 & MERR)
+ pr_cont(" MERR");
+ if (csr0 & RINT)
+ pr_cont(" RINT");
+ if (csr0 & TINT)
+ pr_cont(" TINT");
+ if (csr0 & IDON)
+ pr_cont(" IDON");
+ pr_cont(" ]\n");
+ }
#endif
- }
-}
+ if (csr0 & RINT) { /* Rx interrupt */
+ handled = 1;
+ ariadne_rx(dev);
+ }
-static int ariadne_close(struct net_device *dev)
-{
- volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr;
+ if (csr0 & TINT) { /* Tx-done interrupt */
+ int dirty_tx = priv->dirty_tx;
+
+ handled = 1;
+ while (dirty_tx < priv->cur_tx) {
+ int entry = dirty_tx % TX_RING_SIZE;
+ int status = lowb(priv->tx_ring[entry]->TMD1);
+
+ if (status & TF_OWN)
+ break; /* It still hasn't been Txed */
+
+ priv->tx_ring[entry]->TMD1 &= 0xff00;
+
+ if (status & TF_ERR) {
+ /* There was an major error, log it */
+ int err_status = priv->tx_ring[entry]->TMD3;
+ dev->stats.tx_errors++;
+ if (err_status & EF_RTRY)
+ dev->stats.tx_aborted_errors++;
+ if (err_status & EF_LCAR)
+ dev->stats.tx_carrier_errors++;
+ if (err_status & EF_LCOL)
+ dev->stats.tx_window_errors++;
+ if (err_status & EF_UFLO) {
+ /* Ackk! On FIFO errors the Tx unit is turned off! */
+ dev->stats.tx_fifo_errors++;
+ /* Remove this verbosity later! */
+ netdev_err(dev, "Tx FIFO error! Status %04x\n",
+ csr0);
+ /* Restart the chip */
+ lance->RDP = STRT;
+ }
+ } else {
+ if (status & (TF_MORE | TF_ONE))
+ dev->stats.collisions++;
+ dev->stats.tx_packets++;
+ }
+ dirty_tx++;
+ }
- netif_stop_queue(dev);
+#ifndef final_version
+ if (priv->cur_tx - dirty_tx >= TX_RING_SIZE) {
+ netdev_err(dev, "out-of-sync dirty pointer, %d vs. %d, full=%d\n",
+ dirty_tx, priv->cur_tx,
+ priv->tx_full);
+ dirty_tx += TX_RING_SIZE;
+ }
+#endif
- lance->RAP = CSR112; /* Missed Frame Count */
- dev->stats.rx_missed_errors = swapw(lance->RDP);
- lance->RAP = CSR0; /* PCnet-ISA Controller Status */
+ if (priv->tx_full && netif_queue_stopped(dev) &&
+ dirty_tx > priv->cur_tx - TX_RING_SIZE + 2) {
+ /* The ring is no longer full */
+ priv->tx_full = 0;
+ netif_wake_queue(dev);
+ }
- if (ariadne_debug > 1) {
- printk(KERN_DEBUG "%s: Shutting down ethercard, status was %2.2x.\n",
- dev->name, lance->RDP);
- printk(KERN_DEBUG "%s: %lu packets missed\n", dev->name,
- dev->stats.rx_missed_errors);
- }
+ priv->dirty_tx = dirty_tx;
+ }
- /* We stop the LANCE here -- it occasionally polls memory if we don't. */
- lance->RDP = STOP;
+ /* Log misc errors */
+ if (csr0 & BABL) {
+ handled = 1;
+ dev->stats.tx_errors++; /* Tx babble */
+ }
+ if (csr0 & MISS) {
+ handled = 1;
+ dev->stats.rx_errors++; /* Missed a Rx frame */
+ }
+ if (csr0 & MERR) {
+ handled = 1;
+ netdev_err(dev, "Bus master arbitration failure, status %04x\n",
+ csr0);
+ /* Restart the chip */
+ lance->RDP = STRT;
+ }
+ }
- free_irq(IRQ_AMIGA_PORTS, dev);
+ /* Clear any other interrupt, and set interrupt enable */
+ lance->RAP = CSR0; /* PCnet-ISA Controller Status */
+ lance->RDP = INEA | BABL | CERR | MISS | MERR | IDON;
- return 0;
-}
+ if (ariadne_debug > 4)
+ netdev_dbg(dev, "exiting interrupt, csr%d=%#04x\n",
+ lance->RAP, lance->RDP);
+ return IRQ_RETVAL(handled);
+}
-static inline void ariadne_reset(struct net_device *dev)
+static int ariadne_open(struct net_device *dev)
{
- volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr;
-
- lance->RAP = CSR0; /* PCnet-ISA Controller Status */
- lance->RDP = STOP;
- ariadne_init_ring(dev);
- lance->RDP = INEA|STRT;
- netif_start_queue(dev);
-}
+ volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr;
+ u_short in;
+ u_long version;
+ int i;
+ /* Reset the LANCE */
+ in = lance->Reset;
+
+ /* Stop the LANCE */
+ lance->RAP = CSR0; /* PCnet-ISA Controller Status */
+ lance->RDP = STOP;
+
+ /* Check the LANCE version */
+ lance->RAP = CSR88; /* Chip ID */
+ version = swapw(lance->RDP);
+ lance->RAP = CSR89; /* Chip ID */
+ version |= swapw(lance->RDP) << 16;
+ if ((version & 0x00000fff) != 0x00000003) {
+ pr_warn("Couldn't find AMD Ethernet Chip\n");
+ return -EAGAIN;
+ }
+ if ((version & 0x0ffff000) != 0x00003000) {
+ pr_warn("Couldn't find Am79C960 (Wrong part number = %ld)\n",
+ (version & 0x0ffff000) >> 12);
+ return -EAGAIN;
+ }
-static irqreturn_t ariadne_interrupt(int irq, void *data)
-{
- struct net_device *dev = (struct net_device *)data;
- volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr;
- struct ariadne_private *priv;
- int csr0, boguscnt;
- int handled = 0;
+ netdev_dbg(dev, "Am79C960 (PCnet-ISA) Revision %ld\n",
+ (version & 0xf0000000) >> 28);
- lance->RAP = CSR0; /* PCnet-ISA Controller Status */
+ ariadne_init_ring(dev);
- if (!(lance->RDP & INTR)) /* Check if any interrupt has been */
- return IRQ_NONE; /* generated by the board. */
+ /* Miscellaneous Stuff */
+ lance->RAP = CSR3; /* Interrupt Masks and Deferral Control */
+ lance->RDP = 0x0000;
+ lance->RAP = CSR4; /* Test and Features Control */
+ lance->RDP = DPOLL | APAD_XMT | MFCOM | RCVCCOM | TXSTRTM | JABM;
- priv = netdev_priv(dev);
+ /* Set the Multicast Table */
+ lance->RAP = CSR8; /* Logical Address Filter, LADRF[15:0] */
+ lance->RDP = 0x0000;
+ lance->RAP = CSR9; /* Logical Address Filter, LADRF[31:16] */
+ lance->RDP = 0x0000;
+ lance->RAP = CSR10; /* Logical Address Filter, LADRF[47:32] */
+ lance->RDP = 0x0000;
+ lance->RAP = CSR11; /* Logical Address Filter, LADRF[63:48] */
+ lance->RDP = 0x0000;
- boguscnt = 10;
- while ((csr0 = lance->RDP) & (ERR|RINT|TINT) && --boguscnt >= 0) {
- /* Acknowledge all of the current interrupt sources ASAP. */
- lance->RDP = csr0 & ~(INEA|TDMD|STOP|STRT|INIT);
+ /* Set the Ethernet Hardware Address */
+ lance->RAP = CSR12; /* Physical Address Register, PADR[15:0] */
+ lance->RDP = ((u_short *)&dev->dev_addr[0])[0];
+ lance->RAP = CSR13; /* Physical Address Register, PADR[31:16] */
+ lance->RDP = ((u_short *)&dev->dev_addr[0])[1];
+ lance->RAP = CSR14; /* Physical Address Register, PADR[47:32] */
+ lance->RDP = ((u_short *)&dev->dev_addr[0])[2];
-#if 0
- if (ariadne_debug > 5) {
- printk(KERN_DEBUG "%s: interrupt csr0=%#2.2x new csr=%#2.2x.",
- dev->name, csr0, lance->RDP);
- printk("[");
- if (csr0 & INTR)
- printk(" INTR");
- if (csr0 & INEA)
- printk(" INEA");
- if (csr0 & RXON)
- printk(" RXON");
- if (csr0 & TXON)
- printk(" TXON");
- if (csr0 & TDMD)
- printk(" TDMD");
- if (csr0 & STOP)
- printk(" STOP");
- if (csr0 & STRT)
- printk(" STRT");
- if (csr0 & INIT)
- printk(" INIT");
- if (csr0 & ERR)
- printk(" ERR");
- if (csr0 & BABL)
- printk(" BABL");
- if (csr0 & CERR)
- printk(" CERR");
- if (csr0 & MISS)
- printk(" MISS");
- if (csr0 & MERR)
- printk(" MERR");
- if (csr0 & RINT)
- printk(" RINT");
- if (csr0 & TINT)
- printk(" TINT");
- if (csr0 & IDON)
- printk(" IDON");
- printk(" ]\n");
- }
-#endif
+ /* Set the Init Block Mode */
+ lance->RAP = CSR15; /* Mode Register */
+ lance->RDP = 0x0000;
- if (csr0 & RINT) { /* Rx interrupt */
- handled = 1;
- ariadne_rx(dev);
- }
+ /* Set the Transmit Descriptor Ring Pointer */
+ lance->RAP = CSR30; /* Base Address of Transmit Ring */
+ lance->RDP = swloww(ARIADNE_RAM + offsetof(struct lancedata, tx_ring));
+ lance->RAP = CSR31; /* Base Address of transmit Ring */
+ lance->RDP = swhighw(ARIADNE_RAM + offsetof(struct lancedata, tx_ring));
+
+ /* Set the Receive Descriptor Ring Pointer */
+ lance->RAP = CSR24; /* Base Address of Receive Ring */
+ lance->RDP = swloww(ARIADNE_RAM + offsetof(struct lancedata, rx_ring));
+ lance->RAP = CSR25; /* Base Address of Receive Ring */
+ lance->RDP = swhighw(ARIADNE_RAM + offsetof(struct lancedata, rx_ring));
+
+ /* Set the Number of RX and TX Ring Entries */
+ lance->RAP = CSR76; /* Receive Ring Length */
+ lance->RDP = swapw(((u_short)-RX_RING_SIZE));
+ lance->RAP = CSR78; /* Transmit Ring Length */
+ lance->RDP = swapw(((u_short)-TX_RING_SIZE));
+
+ /* Enable Media Interface Port Auto Select (10BASE-2/10BASE-T) */
+ lance->RAP = ISACSR2; /* Miscellaneous Configuration */
+ lance->IDP = ASEL;
+
+ /* LED Control */
+ lance->RAP = ISACSR5; /* LED1 Status */
+ lance->IDP = PSE|XMTE;
+ lance->RAP = ISACSR6; /* LED2 Status */
+ lance->IDP = PSE|COLE;
+ lance->RAP = ISACSR7; /* LED3 Status */
+ lance->IDP = PSE|RCVE;
+
+ netif_start_queue(dev);
+
+ i = request_irq(IRQ_AMIGA_PORTS, ariadne_interrupt, IRQF_SHARED,
+ dev->name, dev);
+ if (i)
+ return i;
+
+ lance->RAP = CSR0; /* PCnet-ISA Controller Status */
+ lance->RDP = INEA | STRT;
+
+ return 0;
+}
- if (csr0 & TINT) { /* Tx-done interrupt */
- int dirty_tx = priv->dirty_tx;
-
- handled = 1;
- while (dirty_tx < priv->cur_tx) {
- int entry = dirty_tx % TX_RING_SIZE;
- int status = lowb(priv->tx_ring[entry]->TMD1);
-
- if (status & TF_OWN)
- break; /* It still hasn't been Txed */
-
- priv->tx_ring[entry]->TMD1 &= 0xff00;
-
- if (status & TF_ERR) {
- /* There was an major error, log it. */
- int err_status = priv->tx_ring[entry]->TMD3;
- dev->stats.tx_errors++;
- if (err_status & EF_RTRY)
- dev->stats.tx_aborted_errors++;
- if (err_status & EF_LCAR)
- dev->stats.tx_carrier_errors++;
- if (err_status & EF_LCOL)
- dev->stats.tx_window_errors++;
- if (err_status & EF_UFLO) {
- /* Ackk! On FIFO errors the Tx unit is turned off! */
- dev->stats.tx_fifo_errors++;
- /* Remove this verbosity later! */
- printk(KERN_ERR "%s: Tx FIFO error! Status %4.4x.\n",
- dev->name, csr0);
- /* Restart the chip. */
- lance->RDP = STRT;
- }
- } else {
- if (status & (TF_MORE|TF_ONE))
- dev->stats.collisions++;
- dev->stats.tx_packets++;
- }
- dirty_tx++;
- }
+static int ariadne_close(struct net_device *dev)
+{
+ volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr;
-#ifndef final_version
- if (priv->cur_tx - dirty_tx >= TX_RING_SIZE) {
- printk(KERN_ERR "out-of-sync dirty pointer, %d vs. %d, "
- "full=%d.\n", dirty_tx, priv->cur_tx, priv->tx_full);
- dirty_tx += TX_RING_SIZE;
- }
-#endif
+ netif_stop_queue(dev);
- if (priv->tx_full && netif_queue_stopped(dev) &&
- dirty_tx > priv->cur_tx - TX_RING_SIZE + 2) {
- /* The ring is no longer full. */
- priv->tx_full = 0;
- netif_wake_queue(dev);
- }
+ lance->RAP = CSR112; /* Missed Frame Count */
+ dev->stats.rx_missed_errors = swapw(lance->RDP);
+ lance->RAP = CSR0; /* PCnet-ISA Controller Status */
- priv->dirty_tx = dirty_tx;
+ if (ariadne_debug > 1) {
+ netdev_dbg(dev, "Shutting down ethercard, status was %02x\n",
+ lance->RDP);
+ netdev_dbg(dev, "%lu packets missed\n",
+ dev->stats.rx_missed_errors);
}
- /* Log misc errors. */
- if (csr0 & BABL) {
- handled = 1;
- dev->stats.tx_errors++; /* Tx babble. */
- }
- if (csr0 & MISS) {
- handled = 1;
- dev->stats.rx_errors++; /* Missed a Rx frame. */
- }
- if (csr0 & MERR) {
- handled = 1;
- printk(KERN_ERR "%s: Bus master arbitration failure, status "
- "%4.4x.\n", dev->name, csr0);
- /* Restart the chip. */
- lance->RDP = STRT;
- }
- }
+ /* We stop the LANCE here -- it occasionally polls memory if we don't */
+ lance->RDP = STOP;
- /* Clear any other interrupt, and set interrupt enable. */
- lance->RAP = CSR0; /* PCnet-ISA Controller Status */
- lance->RDP = INEA|BABL|CERR|MISS|MERR|IDON;
+ free_irq(IRQ_AMIGA_PORTS, dev);
-#if 0
- if (ariadne_debug > 4)
- printk(KERN_DEBUG "%s: exiting interrupt, csr%d=%#4.4x.\n", dev->name,
- lance->RAP, lance->RDP);
-#endif
- return IRQ_RETVAL(handled);
+ return 0;
}
+static inline void ariadne_reset(struct net_device *dev)
+{
+ volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr;
+
+ lance->RAP = CSR0; /* PCnet-ISA Controller Status */
+ lance->RDP = STOP;
+ ariadne_init_ring(dev);
+ lance->RDP = INEA | STRT;
+ netif_start_queue(dev);
+}
static void ariadne_tx_timeout(struct net_device *dev)
{
- volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr;
+ volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr;
- printk(KERN_ERR "%s: transmit timed out, status %4.4x, resetting.\n",
- dev->name, lance->RDP);
- ariadne_reset(dev);
- netif_wake_queue(dev);
+ netdev_err(dev, "transmit timed out, status %04x, resetting\n",
+ lance->RDP);
+ ariadne_reset(dev);
+ netif_wake_queue(dev);
}
-
static netdev_tx_t ariadne_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
- struct ariadne_private *priv = netdev_priv(dev);
- volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr;
- int entry;
- unsigned long flags;
- int len = skb->len;
-
-#if 0
- if (ariadne_debug > 3) {
- lance->RAP = CSR0; /* PCnet-ISA Controller Status */
- printk(KERN_DEBUG "%s: ariadne_start_xmit() called, csr0 %4.4x.\n",
- dev->name, lance->RDP);
- lance->RDP = 0x0000;
- }
-#endif
-
- /* FIXME: is the 79C960 new enough to do its own padding right ? */
- if (skb->len < ETH_ZLEN)
- {
- if (skb_padto(skb, ETH_ZLEN))
- return NETDEV_TX_OK;
- len = ETH_ZLEN;
- }
-
- /* Fill in a Tx ring entry */
+ struct ariadne_private *priv = netdev_priv(dev);
+ volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr;
+ int entry;
+ unsigned long flags;
+ int len = skb->len;
#if 0
-{
- printk(KERN_DEBUG "TX pkt type 0x%04x from %pM to %pM "
- " data 0x%08x len %d\n",
- ((u_short *)skb->data)[6],
- skb->data + 6, skb->data,
- (int)skb->data, (int)skb->len);
-}
+ if (ariadne_debug > 3) {
+ lance->RAP = CSR0; /* PCnet-ISA Controller Status */
+ netdev_dbg(dev, "%s: csr0 %04x\n", __func__, lance->RDP);
+ lance->RDP = 0x0000;
+ }
#endif
- local_irq_save(flags);
-
- entry = priv->cur_tx % TX_RING_SIZE;
-
- /* Caution: the write order is important here, set the base address with
- the "ownership" bits last. */
-
- priv->tx_ring[entry]->TMD2 = swapw((u_short)-skb->len);
- priv->tx_ring[entry]->TMD3 = 0x0000;
- memcpyw(priv->tx_buff[entry], (u_short *)skb->data, len);
-
-#if 0
- {
- int i, len;
-
- len = skb->len > 64 ? 64 : skb->len;
- len >>= 1;
- for (i = 0; i < len; i += 8) {
- int j;
- printk(KERN_DEBUG "%04x:", i);
- for (j = 0; (j < 8) && ((i+j) < len); j++) {
- if (!(j & 1))
- printk(" ");
- printk("%04x", priv->tx_buff[entry][i+j]);
- }
- printk("\n");
+ /* FIXME: is the 79C960 new enough to do its own padding right ? */
+ if (skb->len < ETH_ZLEN) {
+ if (skb_padto(skb, ETH_ZLEN))
+ return NETDEV_TX_OK;
+ len = ETH_ZLEN;
}
- }
-#endif
- priv->tx_ring[entry]->TMD1 = (priv->tx_ring[entry]->TMD1&0xff00)|TF_OWN|TF_STP|TF_ENP;
+ /* Fill in a Tx ring entry */
- dev_kfree_skb(skb);
+ netdev_dbg(dev, "TX pkt type 0x%04x from %pM to %pM data 0x%08x len %d\n",
+ ((u_short *)skb->data)[6],
+ skb->data + 6, skb->data,
+ (int)skb->data, (int)skb->len);
- priv->cur_tx++;
- if ((priv->cur_tx >= TX_RING_SIZE) && (priv->dirty_tx >= TX_RING_SIZE)) {
+ local_irq_save(flags);
-#if 0
- printk(KERN_DEBUG "*** Subtracting TX_RING_SIZE from cur_tx (%d) and "
- "dirty_tx (%d)\n", priv->cur_tx, priv->dirty_tx);
-#endif
+ entry = priv->cur_tx % TX_RING_SIZE;
- priv->cur_tx -= TX_RING_SIZE;
- priv->dirty_tx -= TX_RING_SIZE;
- }
- dev->stats.tx_bytes += len;
+ /* Caution: the write order is important here, set the base address with
+ the "ownership" bits last */
- /* Trigger an immediate send poll. */
- lance->RAP = CSR0; /* PCnet-ISA Controller Status */
- lance->RDP = INEA|TDMD;
+ priv->tx_ring[entry]->TMD2 = swapw((u_short)-skb->len);
+ priv->tx_ring[entry]->TMD3 = 0x0000;
+ memcpyw(priv->tx_buff[entry], (u_short *)skb->data, len);
- if (lowb(priv->tx_ring[(entry+1) % TX_RING_SIZE]->TMD1) != 0) {
- netif_stop_queue(dev);
- priv->tx_full = 1;
- }
- local_irq_restore(flags);
+#ifdef DEBUG
+ print_hex_dump(KERN_DEBUG, "tx_buff: ", DUMP_PREFIX_OFFSET, 16, 1,
+ (void *)priv->tx_buff[entry],
+ skb->len > 64 ? 64 : skb->len, true);
+#endif
- return NETDEV_TX_OK;
-}
+ priv->tx_ring[entry]->TMD1 = (priv->tx_ring[entry]->TMD1 & 0xff00)
+ | TF_OWN | TF_STP | TF_ENP;
+ dev_kfree_skb(skb);
-static int ariadne_rx(struct net_device *dev)
-{
- struct ariadne_private *priv = netdev_priv(dev);
- int entry = priv->cur_rx % RX_RING_SIZE;
- int i;
-
- /* If we own the next entry, it's a new packet. Send it up. */
- while (!(lowb(priv->rx_ring[entry]->RMD1) & RF_OWN)) {
- int status = lowb(priv->rx_ring[entry]->RMD1);
-
- if (status != (RF_STP|RF_ENP)) { /* There was an error. */
- /* There is a tricky error noted by John Murphy,
- <murf@...ftech.com> to Russ Nelson: Even with full-sized
- buffers it's possible for a jabber packet to use two
- buffers, with only the last correctly noting the error. */
- if (status & RF_ENP)
- /* Only count a general error at the end of a packet.*/
- dev->stats.rx_errors++;
- if (status & RF_FRAM)
- dev->stats.rx_frame_errors++;
- if (status & RF_OFLO)
- dev->stats.rx_over_errors++;
- if (status & RF_CRC)
- dev->stats.rx_crc_errors++;
- if (status & RF_BUFF)
- dev->stats.rx_fifo_errors++;
- priv->rx_ring[entry]->RMD1 &= 0xff00|RF_STP|RF_ENP;
- } else {
- /* Malloc up new buffer, compatible with net-3. */
- short pkt_len = swapw(priv->rx_ring[entry]->RMD3);
- struct sk_buff *skb;
-
- skb = dev_alloc_skb(pkt_len+2);
- if (skb == NULL) {
- printk(KERN_WARNING "%s: Memory squeeze, deferring packet.\n",
- dev->name);
- for (i = 0; i < RX_RING_SIZE; i++)
- if (lowb(priv->rx_ring[(entry+i) % RX_RING_SIZE]->RMD1) & RF_OWN)
- break;
-
- if (i > RX_RING_SIZE-2) {
- dev->stats.rx_dropped++;
- priv->rx_ring[entry]->RMD1 |= RF_OWN;
- priv->cur_rx++;
- }
- break;
- }
+ priv->cur_tx++;
+ if ((priv->cur_tx >= TX_RING_SIZE) &&
+ (priv->dirty_tx >= TX_RING_SIZE)) {
+ netdev_dbg(dev, "*** Subtracting TX_RING_SIZE from cur_tx (%d) and dirty_tx (%d)\n",
+ priv->cur_tx, priv->dirty_tx);
- skb_reserve(skb,2); /* 16 byte align */
- skb_put(skb,pkt_len); /* Make room */
- skb_copy_to_linear_data(skb, (char *)priv->rx_buff[entry], pkt_len);
- skb->protocol=eth_type_trans(skb,dev);
-#if 0
-{
- printk(KERN_DEBUG "RX pkt type 0x%04x from ",
- ((u_short *)skb->data)[6]);
- {
- u_char *ptr = &((u_char *)skb->data)[6];
- printk("%pM", ptr);
- }
- printk(" to ");
- {
- u_char *ptr = (u_char *)skb->data;
- printk("%pM", ptr);
- }
- printk(" data 0x%08x len %d\n", (int)skb->data, (int)skb->len);
-}
-#endif
-
- netif_rx(skb);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += pkt_len;
+ priv->cur_tx -= TX_RING_SIZE;
+ priv->dirty_tx -= TX_RING_SIZE;
}
+ dev->stats.tx_bytes += len;
- priv->rx_ring[entry]->RMD1 |= RF_OWN;
- entry = (++priv->cur_rx) % RX_RING_SIZE;
- }
+ /* Trigger an immediate send poll */
+ lance->RAP = CSR0; /* PCnet-ISA Controller Status */
+ lance->RDP = INEA | TDMD;
- priv->cur_rx = priv->cur_rx % RX_RING_SIZE;
-
- /* We should check that at least two ring entries are free. If not,
- we should free one and mark stats->rx_dropped++. */
+ if (lowb(priv->tx_ring[(entry + 1) % TX_RING_SIZE]->TMD1) != 0) {
+ netif_stop_queue(dev);
+ priv->tx_full = 1;
+ }
+ local_irq_restore(flags);
- return 0;
+ return NETDEV_TX_OK;
}
-
static struct net_device_stats *ariadne_get_stats(struct net_device *dev)
{
- volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr;
- short saved_addr;
- unsigned long flags;
-
- local_irq_save(flags);
- saved_addr = lance->RAP;
- lance->RAP = CSR112; /* Missed Frame Count */
- dev->stats.rx_missed_errors = swapw(lance->RDP);
- lance->RAP = saved_addr;
- local_irq_restore(flags);
-
- return &dev->stats;
+ volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr;
+ short saved_addr;
+ unsigned long flags;
+
+ local_irq_save(flags);
+ saved_addr = lance->RAP;
+ lance->RAP = CSR112; /* Missed Frame Count */
+ dev->stats.rx_missed_errors = swapw(lance->RDP);
+ lance->RAP = saved_addr;
+ local_irq_restore(flags);
+
+ return &dev->stats;
}
-
/* Set or clear the multicast filter for this adaptor.
- num_addrs == -1 Promiscuous mode, receive all packets
- num_addrs == 0 Normal mode, clear multicast list
- num_addrs > 0 Multicast mode, receive normal and MC packets, and do
- best-effort filtering.
+ * num_addrs == -1 Promiscuous mode, receive all packets
+ * num_addrs == 0 Normal mode, clear multicast list
+ * num_addrs > 0 Multicast mode, receive normal and MC packets,
+ * and do best-effort filtering.
*/
static void set_multicast_list(struct net_device *dev)
{
- volatile struct Am79C960 *lance = (struct Am79C960*)dev->base_addr;
+ volatile struct Am79C960 *lance = (struct Am79C960 *)dev->base_addr;
- if (!netif_running(dev))
- return;
+ if (!netif_running(dev))
+ return;
- netif_stop_queue(dev);
+ netif_stop_queue(dev);
- /* We take the simple way out and always enable promiscuous mode. */
- lance->RAP = CSR0; /* PCnet-ISA Controller Status */
- lance->RDP = STOP; /* Temporarily stop the lance. */
- ariadne_init_ring(dev);
+ /* We take the simple way out and always enable promiscuous mode */
+ lance->RAP = CSR0; /* PCnet-ISA Controller Status */
+ lance->RDP = STOP; /* Temporarily stop the lance */
+ ariadne_init_ring(dev);
- if (dev->flags & IFF_PROMISC) {
- lance->RAP = CSR15; /* Mode Register */
- lance->RDP = PROM; /* Set promiscuous mode */
- } else {
- short multicast_table[4];
- int num_addrs = netdev_mc_count(dev);
- int i;
- /* We don't use the multicast table, but rely on upper-layer filtering. */
- memset(multicast_table, (num_addrs == 0) ? 0 : -1,
- sizeof(multicast_table));
- for (i = 0; i < 4; i++) {
- lance->RAP = CSR8+(i<<8); /* Logical Address Filter */
- lance->RDP = swapw(multicast_table[i]);
+ if (dev->flags & IFF_PROMISC) {
+ lance->RAP = CSR15; /* Mode Register */
+ lance->RDP = PROM; /* Set promiscuous mode */
+ } else {
+ short multicast_table[4];
+ int num_addrs = netdev_mc_count(dev);
+ int i;
+ /* We don't use the multicast table,
+ * but rely on upper-layer filtering
+ */
+ memset(multicast_table, (num_addrs == 0) ? 0 : -1,
+ sizeof(multicast_table));
+ for (i = 0; i < 4; i++) {
+ lance->RAP = CSR8 + (i << 8);
+ /* Logical Address Filter */
+ lance->RDP = swapw(multicast_table[i]);
+ }
+ lance->RAP = CSR15; /* Mode Register */
+ lance->RDP = 0x0000; /* Unset promiscuous mode */
}
- lance->RAP = CSR15; /* Mode Register */
- lance->RDP = 0x0000; /* Unset promiscuous mode */
- }
- lance->RAP = CSR0; /* PCnet-ISA Controller Status */
- lance->RDP = INEA|STRT|IDON; /* Resume normal operation. */
+ lance->RAP = CSR0; /* PCnet-ISA Controller Status */
+ lance->RDP = INEA | STRT | IDON;/* Resume normal operation */
- netif_wake_queue(dev);
+ netif_wake_queue(dev);
}
static void __devexit ariadne_remove_one(struct zorro_dev *z)
{
- struct net_device *dev = zorro_get_drvdata(z);
+ struct net_device *dev = zorro_get_drvdata(z);
- unregister_netdev(dev);
- release_mem_region(ZTWO_PADDR(dev->base_addr), sizeof(struct Am79C960));
- release_mem_region(ZTWO_PADDR(dev->mem_start), ARIADNE_RAM_SIZE);
- free_netdev(dev);
+ unregister_netdev(dev);
+ release_mem_region(ZTWO_PADDR(dev->base_addr), sizeof(struct Am79C960));
+ release_mem_region(ZTWO_PADDR(dev->mem_start), ARIADNE_RAM_SIZE);
+ free_netdev(dev);
}
+static struct zorro_device_id ariadne_zorro_tbl[] __devinitdata = {
+ { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE },
+ { 0 }
+};
+MODULE_DEVICE_TABLE(zorro, ariadne_zorro_tbl);
+
+static const struct net_device_ops ariadne_netdev_ops = {
+ .ndo_open = ariadne_open,
+ .ndo_stop = ariadne_close,
+ .ndo_start_xmit = ariadne_start_xmit,
+ .ndo_tx_timeout = ariadne_tx_timeout,
+ .ndo_get_stats = ariadne_get_stats,
+ .ndo_set_multicast_list = set_multicast_list,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+};
+
+static int __devinit ariadne_init_one(struct zorro_dev *z,
+ const struct zorro_device_id *ent)
+{
+ unsigned long board = z->resource.start;
+ unsigned long base_addr = board + ARIADNE_LANCE;
+ unsigned long mem_start = board + ARIADNE_RAM;
+ struct resource *r1, *r2;
+ struct net_device *dev;
+ struct ariadne_private *priv;
+ int err;
+
+ r1 = request_mem_region(base_addr, sizeof(struct Am79C960), "Am79C960");
+ if (!r1)
+ return -EBUSY;
+ r2 = request_mem_region(mem_start, ARIADNE_RAM_SIZE, "RAM");
+ if (!r2) {
+ release_mem_region(base_addr, sizeof(struct Am79C960));
+ return -EBUSY;
+ }
+
+ dev = alloc_etherdev(sizeof(struct ariadne_private));
+ if (dev == NULL) {
+ release_mem_region(base_addr, sizeof(struct Am79C960));
+ release_mem_region(mem_start, ARIADNE_RAM_SIZE);
+ return -ENOMEM;
+ }
+
+ priv = netdev_priv(dev);
+
+ r1->name = dev->name;
+ r2->name = dev->name;
+
+ dev->dev_addr[0] = 0x00;
+ dev->dev_addr[1] = 0x60;
+ dev->dev_addr[2] = 0x30;
+ dev->dev_addr[3] = (z->rom.er_SerialNumber >> 16) & 0xff;
+ dev->dev_addr[4] = (z->rom.er_SerialNumber >> 8) & 0xff;
+ dev->dev_addr[5] = z->rom.er_SerialNumber & 0xff;
+ dev->base_addr = ZTWO_VADDR(base_addr);
+ dev->mem_start = ZTWO_VADDR(mem_start);
+ dev->mem_end = dev->mem_start + ARIADNE_RAM_SIZE;
+
+ dev->netdev_ops = &ariadne_netdev_ops;
+ dev->watchdog_timeo = 5 * HZ;
+
+ err = register_netdev(dev);
+ if (err) {
+ release_mem_region(base_addr, sizeof(struct Am79C960));
+ release_mem_region(mem_start, ARIADNE_RAM_SIZE);
+ free_netdev(dev);
+ return err;
+ }
+ zorro_set_drvdata(z, dev);
+
+ netdev_info(dev, "Ariadne at 0x%08lx, Ethernet Address %pM\n",
+ board, dev->dev_addr);
+
+ return 0;
+}
+
+static struct zorro_driver ariadne_driver = {
+ .name = "ariadne",
+ .id_table = ariadne_zorro_tbl,
+ .probe = ariadne_init_one,
+ .remove = __devexit_p(ariadne_remove_one),
+};
+
static int __init ariadne_init_module(void)
{
- return zorro_register_driver(&ariadne_driver);
+ return zorro_register_driver(&ariadne_driver);
}
static void __exit ariadne_cleanup_module(void)
{
- zorro_unregister_driver(&ariadne_driver);
+ zorro_unregister_driver(&ariadne_driver);
}
module_init(ariadne_init_module);
--
1.7.6.rc3
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