1 /* r6040.c: A RDC R6040 FastEthernet driver for linux. */
3 Re-written 2004 by Sten Wang.
5 Copyright 1994-2000 by Donald Becker.
6 Copyright 1993 United States Government as represented by the
7 Director, National Security Agency. This software may be used and
8 distributed according to the terms of the GNU General Public License,
9 incorporated herein by reference.
11 This driver is for RDC R6040 FastEthernet MAC series.
12 For kernel version after 2.4.22
15 ---------- ------------------------------------------------
16 08-24-2006 Support at linux 2.6.10 above
17 03-24-2006 Support NAPI
18 03-21-2006 By Charies,change spin_lock_irqsave(lp->lock, flags) to
19 spin_lock_irqsave(&lp->lock, flags) in set_multicast_list
20 03-15-2006 Modify the set_multicast_list ,due to when re-plug the ethernet,
21 it will forget the previous setting
22 07-12-2005 Tim, modify the set_multicast_list
23 03-28-2005 Tim, modify some error mac register offset in
24 function set_multicast_list
25 03-27-2005 Tim, Add the internal state machine reset
26 Sten, If multicast address more than 4, enter PROM mode
28 12-22-2004 Sten Init MAC MBCR register=0x012A
32 1. If multicast address more than 4, use the multicast address hash
35 #define DRV_NAME "r6040"
36 #define DRV_VERSION "0.13"
37 #define DRV_RELDATE "24Aug2006"
39 /* PHY CHIP Address */
40 #define PHY1_ADDR 1 /* For MAC1 */
41 #define PHY2_ADDR 2 /* For MAC2 */
42 #define PHY_MODE 0x3100 /* PHY CHIP Register 0 */
43 #define PHY_CAP 0x01E1 /* PHY CHIP Register 4 */
45 /* Time in jiffies before concluding the transmitter is hung. */
46 #define TX_TIMEOUT (6000 * HZ / 1000)
47 #define TIMER_WUT (jiffies + HZ * 1)/* timer wakeup time : 1 second */
50 #define RDC_MAC_ID 0x6040
52 /* RDC MAC I/O Size */
53 #define R6040_IO_SIZE 256
55 /* RDC Chip PCI Command */
56 #define R6040_PCI_CMD 0x0005 /* IO, Master */
62 #define TX_DCNT 0x80 /* TX descriptor count */
63 #define RX_DCNT 0x80 /* RX descriptor count */
64 #define MAX_BUF_SIZE 0x600
65 #define ALLOC_DESC_SIZE ((TX_DCNT+RX_DCNT)*sizeof(struct r6040_descriptor)+0x10)
66 #define MBCR_DEFAULT 0x012A /* MAC Bus Control Register */
68 /* Debug enable or not */
72 #define RDC_DBUG(msg, value) printk("%s %x\n", msg, value);
74 #define RDC_DBUG(msg, value)
78 #include <linux/module.h>
79 #include <linux/version.h>
80 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
81 #include <linux/moduleparam.h>
83 #include <linux/kernel.h>
84 #include <linux/string.h>
85 #include <linux/timer.h>
86 #include <linux/errno.h>
87 #include <linux/ioport.h>
88 #include <linux/slab.h>
89 #include <linux/interrupt.h>
90 #include <linux/pci.h>
91 #include <linux/netdevice.h>
92 #include <linux/etherdevice.h>
93 #include <linux/skbuff.h>
94 #include <linux/init.h>
95 #include <linux/delay.h> /* for udelay() */
96 #include <linux/mii.h>
97 #include <linux/ethtool.h>
98 #include <linux/crc32.h>
99 #include <linux/spinlock.h>
101 #include <asm/processor.h>
102 #include <asm/bitops.h>
105 #include <asm/uaccess.h>
107 MODULE_AUTHOR("Sten Wang <sten.wang@rdc.com.tw>");
108 MODULE_LICENSE("GPL");
109 #ifdef CONFIG_R6040_NAPI
110 MODULE_DESCRIPTION("RDC R6040 NAPI PCI FastEthernet Driver");
112 MODULE_DESCRIPTION("RDC R6040 PCI FastEthernet Driver");
115 #define R6040_INT_MASK 0x0011
117 struct r6040_descriptor {
118 u16 status, len; /* 0-3 */
122 char *vbufp; /* 10-13 */
123 struct r6040_descriptor *vndescp; /* 14-17 */
124 struct sk_buff *skb_ptr; /* 18-1B */
125 u32 rev2; /* 1C-1F */
126 } __attribute__(( aligned(32) ));
128 struct r6040_private {
129 struct net_device_stats stats;
131 struct timer_list timer;
132 struct pci_dev *pdev;
134 struct r6040_descriptor *rx_insert_ptr;
135 struct r6040_descriptor *rx_remove_ptr;
136 struct r6040_descriptor *tx_insert_ptr;
137 struct r6040_descriptor *tx_remove_ptr;
138 u16 tx_free_desc, rx_free_desc, phy_addr, phy_mode;
144 struct r6040_chip_info {
151 #ifdef CONFIG_R6040_NAPI
152 static int NAPI_status;
155 static int __devinitdata printed_version;
156 #ifdef CONFIG_R6040_NAPI
157 static char version[] __devinitdata =
158 KERN_INFO DRV_NAME ": RDC R6040 NAPI net driver, version "DRV_VERSION " (" DRV_RELDATE ")\n";
160 static char version[] __devinitdata =
161 KERN_INFO DRV_NAME ": RDC R6040 net driver, version "DRV_VERSION " (" DRV_RELDATE ")\n";
163 static struct r6040_chip_info r6040_chip_info[] __devinitdata =
165 { "RDC R6040 Knight", R6040_PCI_CMD, R6040_IO_SIZE, 0}
168 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
169 static int NUM_MAC_TABLE = 2 ;
172 static int phy_table[] = { 0x1, 0x2};
173 static u8 adr_table[2][8] = {{0x00, 0x00, 0x60, 0x00, 0x00, 0x01}, {0x00, 0x00, 0x60, 0x00, 0x00, 0x02}};
175 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 10)
176 module_param_array(adr_table, int, &NUM_MAC_TABLE, 0644);
177 #elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
178 module_param_array(adr_table, int, NUM_MAC_TABLE, 0644);
180 MODULE_PARM(adr_table, "2-4i");
182 MODULE_PARM_DESC(adr_table, "MAC Address (assigned)");
184 static int r6040_open(struct net_device *dev);
185 static int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev);
186 static irqreturn_t r6040_interrupt(int irq, void *dev_id);
187 static struct net_device_stats *r6040_get_stats(struct net_device *dev);
188 static int r6040_close(struct net_device *dev);
189 static void set_multicast_list(struct net_device *dev);
190 static struct ethtool_ops netdev_ethtool_ops;
191 static void r6040_down(struct net_device *dev);
192 static void r6040_up(struct net_device *dev);
193 static void r6040_tx_timeout (struct net_device *dev);
194 static void r6040_timer(unsigned long);
196 static int phy_mode_chk(struct net_device *dev);
197 static int phy_read(int ioaddr, int phy_adr, int reg_idx);
198 static void phy_write(int ioaddr, int phy_adr, int reg_idx, int dat);
199 static void rx_buf_alloc(struct r6040_private *lp,struct net_device *dev);
200 #ifdef CONFIG_R6040_NAPI
201 static int r6040_poll(struct net_device *netdev, int *budget);
205 static int __devinit r6040_init_one (struct pci_dev *pdev,
206 const struct pci_device_id *ent)
208 struct net_device *dev;
209 struct r6040_private *lp;
210 int ioaddr, io_size, err;
211 static int card_idx = -1;
212 int chip_id = (int)ent->driver_data;
214 RDC_DBUG("r6040_init_one()", 0);
216 if (printed_version++)
219 if ((err = pci_enable_device (pdev)))
222 /* this should always be supported */
223 if (pci_set_dma_mask(pdev, 0xffffffff)) {
224 printk(KERN_ERR DRV_NAME "32-bit PCI DMA addresses not supported by the card!?\n");
229 io_size = r6040_chip_info[chip_id].io_size;
230 if (pci_resource_len (pdev, 0) < io_size) {
234 ioaddr = pci_resource_start (pdev, 0); /* IO map base address */
235 pci_set_master(pdev);
237 dev = alloc_etherdev(sizeof(struct r6040_private));
240 SET_MODULE_OWNER(dev);
242 if (pci_request_regions(pdev, DRV_NAME)) {
243 printk(KERN_ERR DRV_NAME ": Failed to request PCI regions\n");
245 goto err_out_disable;
248 /* Init system & device */
250 dev->base_addr = ioaddr;
251 dev->irq = pdev->irq;
253 spin_lock_init(&lp->lock);
254 pci_set_drvdata(pdev, dev);
256 /* Set MAC address */
258 memcpy(dev->dev_addr, (u8 *)&adr_table[card_idx][0], 6);
260 /* Link new device into r6040_root_dev */
263 /* Init RDC private data */
265 lp->phy_addr = phy_table[card_idx];
267 /* The RDC-specific entries in the device structure. */
268 dev->open = &r6040_open;
269 dev->hard_start_xmit = &r6040_start_xmit;
270 dev->stop = &r6040_close;
271 dev->get_stats = &r6040_get_stats;
272 dev->set_multicast_list = &set_multicast_list;
273 dev->ethtool_ops = &netdev_ethtool_ops;
274 dev->tx_timeout = &r6040_tx_timeout;
275 dev->watchdog_timeo = TX_TIMEOUT;
276 #ifdef CONFIG_R6040_NAPI
277 dev->poll = &r6040_poll;
281 /* Register net device. After this dev->name assign */
282 if ((err = register_netdev(dev))) {
283 printk(KERN_ERR DRV_NAME ": Failed to register net device\n");
287 netif_carrier_on(dev);
291 pci_release_regions(pdev);
293 pci_disable_device(pdev);
294 pci_set_drvdata(pdev, NULL);
300 static void __devexit r6040_remove_one (struct pci_dev *pdev)
302 struct net_device *dev = pci_get_drvdata(pdev);
304 unregister_netdev(dev);
305 pci_release_regions(pdev);
307 pci_disable_device(pdev);
308 pci_set_drvdata(pdev, NULL);
312 r6040_open(struct net_device *dev)
314 struct r6040_private *lp = dev->priv;
317 RDC_DBUG("r6040_open()", 0);
319 /* Request IRQ and Register interrupt handler */
320 i = request_irq(dev->irq, &r6040_interrupt, SA_SHIRQ, dev->name, dev);
323 /* Allocate Descriptor memory */
324 lp->desc_pool = pci_alloc_consistent(lp->pdev, ALLOC_DESC_SIZE, &lp->desc_dma);
325 if (!lp->desc_pool) return -ENOMEM;
329 netif_start_queue(dev);
331 /* set and active a timer process */
332 init_timer(&lp->timer);
333 lp->timer.expires = TIMER_WUT;
334 lp->timer.data = (unsigned long)dev;
335 lp->timer.function = &r6040_timer;
336 add_timer(&lp->timer);
342 r6040_tx_timeout (struct net_device *dev)
344 struct r6040_private *lp = dev->priv;
345 //int ioaddr = dev->base_addr;
346 //struct r6040_descriptor *descptr = lp->tx_remove_ptr;
348 RDC_DBUG("r6040_tx_timeout()", 0);
350 /* Transmitter timeout, serious problems. */
351 /* Sten: Nothing need to do so far. */
352 printk(KERN_ERR DRV_NAME ": Big Trobule, transmit timeout/n");
353 lp->stats.tx_errors++;
354 netif_stop_queue(dev);
356 //printk("<RDC> XMT timedout: CR0 %x, CR40 %x, CR3C %x, CR2C %x, CR30 %x, CR34 %x, CR38 %x\n", inw(ioaddr), inw(ioaddr+0x40), inw(ioaddr+0x3c), inw(ioaddr+0x2c), inw(ioaddr+0x30), inw(ioaddr+0x34), inw(ioaddr+0x38));
358 //printk("<RDC> XMT_TO: %08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp);
363 r6040_start_xmit(struct sk_buff *skb, struct net_device *dev)
365 struct r6040_private *lp = dev->priv;
366 struct r6040_descriptor *descptr;
367 int ioaddr = dev->base_addr;
370 RDC_DBUG("r6040_start_xmit()", 0);
372 if (skb == NULL) /* NULL skb directly return */
374 if (skb->len >= MAX_BUF_SIZE) { /* Packet too long, drop it */
379 /* Critical Section */
380 spin_lock_irqsave(&lp->lock, flags);
382 /* TX resource check */
383 if (!lp->tx_free_desc) {
384 spin_unlock_irqrestore(&lp->lock, flags);
385 printk(KERN_ERR DRV_NAME ": NO TX DESC ");
389 /* Statistic Counter */
390 lp->stats.tx_packets++;
391 lp->stats.tx_bytes += skb->len;
393 /* Set TX descriptor & Transmit it */
395 descptr = lp->tx_insert_ptr;
396 if (skb->len < 0x3c) descptr->len = 0x3c;
397 else descptr->len = skb->len;
398 descptr->skb_ptr = skb;
399 descptr->buf = cpu_to_le32(pci_map_single(lp->pdev, skb->data, skb->len, PCI_DMA_TODEVICE));
400 descptr->status = 0x8000;
401 outw(0x01, ioaddr + 0x14);
402 lp->tx_insert_ptr = descptr->vndescp;
405 printk("Xmit(): %08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp);
408 /* If no tx resource, stop */
409 if (!lp->tx_free_desc)
410 netif_stop_queue(dev);
412 dev->trans_start = jiffies;
413 spin_unlock_irqrestore(&lp->lock, flags);
417 /* The RDC interrupt handler. */
419 r6040_interrupt(int irq, void *dev_id)
421 struct net_device *dev = dev_id;
422 struct r6040_private *lp;
423 struct r6040_descriptor *descptr;
424 struct sk_buff *skb_ptr;
427 #ifdef CONFIG_R6040_NAPI
433 RDC_DBUG("r6040_interrupt()", 0);
435 printk (KERN_ERR DRV_NAME ": INT() unknown device.\n");
436 return IRQ_RETVAL(handled);
439 lp = (struct r6040_private *)dev->priv;
440 spin_lock_irqsave(&lp->lock, flags);
442 /* Check MAC Interrupt status */
443 ioaddr = dev->base_addr;
444 outw(0x0, ioaddr + 0x40); /* Mask Off RDC MAC interrupt */
445 status = inw(ioaddr + 0x3c); /* Read INTR status and clear */
448 #ifdef CONFIG_R6040_NAPI
450 if(netif_rx_schedule_prep(dev))
452 NAPI_status = status ;
453 __netif_rx_schedule(dev);
456 spin_unlock_irqrestore(&lp->lock, flags);
457 return IRQ_RETVAL(handled);
459 /* TX interrupt request */
462 descptr = lp->tx_remove_ptr;
463 while(lp->tx_free_desc < TX_DCNT) {
464 if (descptr->status & 0x8000) break; /* Not complte */
465 skb_ptr = descptr->skb_ptr;
466 pci_unmap_single(lp->pdev, descptr->buf, skb_ptr->len, PCI_DMA_TODEVICE);
467 dev_kfree_skb_irq(skb_ptr); /* Free buffer */
468 descptr->skb_ptr = 0;
469 descptr = descptr->vndescp; /* To next descriptor */
472 lp->tx_remove_ptr = descptr;
473 if (lp->tx_free_desc) netif_wake_queue(dev);
476 /* RX interrupt request */
479 descptr = lp->rx_remove_ptr;
480 while(lp->rx_free_desc) {
481 if (descptr->status & 0x8000) break; /* No Rx packet */
482 skb_ptr = descptr->skb_ptr;
483 descptr->skb_ptr = 0;
485 skb_put(skb_ptr, descptr->len - 4);
486 pci_unmap_single(lp->pdev, descptr->buf, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
487 skb_ptr->protocol = eth_type_trans(skb_ptr, dev);
488 netif_rx(skb_ptr); /* Send to upper layer */
489 lp->stats.rx_packets++;
490 lp->stats.rx_bytes += descptr->len;
491 descptr = descptr->vndescp; /* To next descriptor */
494 lp->rx_remove_ptr = descptr;
497 /* Allocate new RX buffer */
498 if (lp->rx_free_desc < RX_DCNT) rx_buf_alloc(lp,dev);
500 outw(R6040_INT_MASK, ioaddr + 0x40); /* TX/RX interrupt enable */
501 spin_unlock_irqrestore(&lp->lock, flags);
503 return IRQ_RETVAL(handled);
507 static struct net_device_stats *
508 r6040_get_stats(struct net_device *dev)
510 struct r6040_private *lp = dev->priv;
512 RDC_DBUG("r6040_get_stats()", 0);
517 * Set or clear the multicast filter for this adaptor.
520 set_multicast_list(struct net_device *dev)
522 struct r6040_private *lp = dev->priv;
523 struct dev_mc_list *mcptr;
524 int ioaddr = dev->base_addr;
528 RDC_DBUG("set_multicast_list()", 0);
531 adrp = (u16 *) dev->dev_addr;
532 outw(adrp[0], ioaddr + 0x68);
533 outw(adrp[1], ioaddr + 0x6A);
534 outw(adrp[2], ioaddr + 0x6C);
538 printk("MAC ADDR: %04x %04x %04x\n", adrp[0], adrp[1], adrp[2]);
541 /* Promiscous Mode */
542 spin_lock_irqsave(&lp->lock, flags);
543 i = inw(ioaddr) & ~0x0120; /* Clear AMCP & PROM */
544 if (dev->flags & IFF_PROMISC)
549 if (dev->mc_count > 4) i |= 0x0020; /* Too many multicast address */
551 spin_unlock_irqrestore(&lp->lock, flags);
553 /* Multicast Address */
554 if (dev->mc_count > 4) /* Wait to do: Hash Table for multicast */
557 /* Multicast Address 1~4 case */
558 for (i = 0, mcptr = dev->mc_list; (i<dev->mc_count) && (i<4); i++) {
559 adrp = (u16 *)mcptr->dmi_addr;
560 outw(adrp[0], ioaddr + 0x70 + 8*i);
561 outw(adrp[1], ioaddr + 0x72 + 8*i);
562 outw(adrp[2], ioaddr + 0x74 + 8*i);
565 printk("M_ADDR: %04x %04x %04x\n", adrp[0], adrp[1], adrp[2]);
568 for (i = dev->mc_count; i < 4; i++) {
569 outw(0xffff, ioaddr + 0x68 + 8*i);
570 outw(0xffff, ioaddr + 0x6A + 8*i);
571 outw(0xffff, ioaddr + 0x6C + 8*i);
575 static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
577 struct r6040_private *rp = dev->priv;
579 strcpy (info->driver, DRV_NAME);
580 strcpy (info->version, DRV_VERSION);
581 strcpy (info->bus_info, pci_name(rp->pdev));
584 static struct ethtool_ops netdev_ethtool_ops = {
585 .get_drvinfo = netdev_get_drvinfo,
589 r6040_close(struct net_device *dev)
591 struct r6040_private *lp = dev->priv;
593 RDC_DBUG("r6040_close()", 0);
596 del_timer_sync(&lp->timer);
598 spin_lock_irq(&lp->lock);
600 netif_stop_queue(dev);
604 spin_unlock_irq(&lp->lock);
610 Stop RDC MAC and Free the allocated resource
612 static void r6040_down(struct net_device *dev)
614 struct r6040_private *lp = dev->priv;
616 int ioaddr = dev->base_addr;
618 RDC_DBUG("r6040_down()", 0);
621 outw(0x0000, ioaddr + 0x40); /* Mask Off Interrupt */
622 outw(0x0001, ioaddr + 0x04); /* Reset RDC MAC */
624 do{}while((i++ < 2048) && (inw(ioaddr + 0x04) & 0x1));
626 free_irq(dev->irq, dev);
629 for (i = 0; i < RX_DCNT; i++) {
630 if (lp->rx_insert_ptr->skb_ptr) {
631 pci_unmap_single(lp->pdev, lp->rx_insert_ptr->buf, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
632 dev_kfree_skb(lp->rx_insert_ptr->skb_ptr);
633 lp->rx_insert_ptr->skb_ptr = 0;
635 lp->rx_insert_ptr = lp->rx_insert_ptr->vndescp;
639 for (i = 0; i < TX_DCNT; i++) {
640 if (lp->tx_insert_ptr->skb_ptr) {
641 pci_unmap_single(lp->pdev, lp->tx_insert_ptr->buf, MAX_BUF_SIZE, PCI_DMA_TODEVICE);
642 dev_kfree_skb(lp->tx_insert_ptr->skb_ptr);
643 lp->rx_insert_ptr->skb_ptr = 0;
645 lp->tx_insert_ptr = lp->tx_insert_ptr->vndescp;
648 /* Free Descriptor memory */
649 pci_free_consistent(lp->pdev, ALLOC_DESC_SIZE, lp->desc_pool, lp->desc_dma);
654 #ifdef CONFIG_R6040_NAPI
655 static int r6040_poll(struct net_device *dev, int *budget)
657 struct r6040_private *lp;
658 struct r6040_descriptor *descptr;
659 struct sk_buff *skb_ptr;
664 ioaddr = dev->base_addr;
665 lp = (struct r6040_private *)dev->priv;
666 unsigned long rx_work = dev->quota ;
671 /* TX interrupt request */
672 if (NAPI_status & 0x10) {
674 descptr = lp->tx_remove_ptr;
675 while(lp->tx_free_desc < TX_DCNT) {
676 if (descptr->status & 0x8000) break; /* Not complte */
677 skb_ptr = descptr->skb_ptr;
678 pci_unmap_single(lp->pdev, descptr->buf, skb_ptr->len, PCI_DMA_TODEVICE);
679 dev_kfree_skb_irq(skb_ptr); /* Free buffer */
680 descptr->skb_ptr = 0;
681 descptr = descptr->vndescp; /* To next descriptor */
684 lp->tx_remove_ptr = descptr;
685 if (lp->tx_free_desc) netif_wake_queue(dev);
689 /* RX interrupt request */
690 if (NAPI_status & 0x01) {
692 descptr = lp->rx_remove_ptr;
693 while(lp->rx_free_desc) {
694 if (descptr->status & 0x8000) break; /* No Rx packet */
695 skb_ptr = descptr->skb_ptr;
696 descptr->skb_ptr = 0;
698 skb_put(skb_ptr, descptr->len - 4);
699 pci_unmap_single(lp->pdev, descptr->buf, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
700 skb_ptr->protocol = eth_type_trans(skb_ptr, dev);
701 netif_receive_skb(skb_ptr); /* Send to upper layer */
702 lp->stats.rx_packets++;
703 lp->stats.rx_bytes += descptr->len;
704 descptr = descptr->vndescp; /* To next descriptor */
707 lp->rx_remove_ptr = descptr;
710 /* Allocate new RX buffer */
711 if (lp->rx_free_desc < RX_DCNT) rx_buf_alloc(lp,dev);
714 netif_rx_complete(dev);
715 outw(R6040_INT_MASK,ioaddr + 0x40);
723 static void r6040_up(struct net_device *dev)
725 struct r6040_private *lp = dev->priv;
726 struct r6040_descriptor *descptr;
728 int ioaddr = dev->base_addr;
730 dma_addr_t desc_dma, start_dma;
732 RDC_DBUG("r6040_up()", 0);
735 lp->tx_free_desc = TX_DCNT;
736 lp->rx_free_desc = 0;
738 /* Init descriptor */
739 memset(lp->desc_pool, 0, ALLOC_DESC_SIZE); /* Let all descriptor = 0 */
740 lp->tx_insert_ptr = (struct r6040_descriptor *)lp->desc_pool;
741 lp->tx_remove_ptr = lp->tx_insert_ptr;
742 lp->rx_insert_ptr = (struct r6040_descriptor *)lp->tx_insert_ptr+TX_DCNT;
743 lp->rx_remove_ptr = lp->rx_insert_ptr;
745 /* Init TX descriptor */
746 descptr = lp->tx_insert_ptr;
747 desc_dma = lp->desc_dma;
748 start_dma = desc_dma;
749 for (i = 0; i < TX_DCNT; i++) {
750 descptr->ndesc = cpu_to_le32(desc_dma + sizeof(struct r6040_descriptor));
751 descptr->vndescp = (descptr + 1);
752 descptr = (descptr + 1);
753 desc_dma += sizeof(struct r6040_descriptor);
755 (descptr - 1)->ndesc = cpu_to_le32(start_dma);
756 (descptr - 1)->vndescp = lp->tx_insert_ptr;
758 /* Init RX descriptor */
759 start_dma = desc_dma;
760 descptr = lp->rx_insert_ptr;
761 for (i = 0; i < RX_DCNT; i++) {
762 descptr->ndesc = cpu_to_le32(desc_dma + sizeof(struct r6040_descriptor));
763 descptr->vndescp = (descptr + 1);
764 descptr = (descptr + 1);
765 desc_dma += sizeof(struct r6040_descriptor);
767 (descptr - 1)->ndesc = cpu_to_le32(start_dma);
768 (descptr - 1)->vndescp = lp->rx_insert_ptr;
770 /* Allocate buffer for RX descriptor */
771 rx_buf_alloc(lp,dev);
774 descptr = lp->tx_insert_ptr;
775 for (i = 0; i < TX_DCNT; i++) {
776 printk("%08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp);
777 descptr = descptr->vndescp;
779 descptr = lp->rx_insert_ptr;
780 for (i = 0; i < RX_DCNT; i++) {
781 printk("%08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp);
782 descptr = descptr->vndescp;
786 /* MAC operation register */
787 outw(0x01, ioaddr+0x04); /* Reset MAC */
788 outw(2 , ioaddr+0xAC); /* Reset internal state machine */
789 outw(0 , ioaddr+0xAC);
792 /* TX and RX descriptor start Register */
793 tmp_addr = cpu_to_le32(lp->tx_insert_ptr);
794 tmp_addr = virt_to_bus((volatile void *)tmp_addr);
795 outw((u16) tmp_addr, ioaddr+0x2c);
796 outw(tmp_addr >> 16, ioaddr+0x30);
797 tmp_addr = cpu_to_le32(lp->rx_insert_ptr);
798 tmp_addr = virt_to_bus((volatile void *)tmp_addr);
799 outw((u16) tmp_addr, ioaddr+0x34);
800 outw(tmp_addr >> 16, ioaddr+0x38);
802 /* Buffer Size Register */
803 outw(MAX_BUF_SIZE, ioaddr+0x18);
806 phy_write(ioaddr, lp->phy_addr, 4, PHY_CAP);
807 phy_write(ioaddr, lp->phy_addr, 0, PHY_MODE);
809 if (PHY_MODE == 0x3100)
810 lp->phy_mode = phy_mode_chk(dev);
811 else lp->phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
813 /* MAC Bus Control Register */
814 outw(MBCR_DEFAULT, ioaddr+0x8);
816 /* MAC TX/RX Enable */
817 lp->mcr0 |= lp->phy_mode;
818 outw(lp->mcr0, ioaddr);
820 /* Interrupt Mask Register */
821 outw(R6040_INT_MASK, ioaddr + 0x40);
825 A periodic timer routine
826 Polling PHY Chip Link Status
828 static void r6040_timer(unsigned long data)
830 struct net_device *dev=(struct net_device *)data;
831 struct r6040_private *lp = dev->priv;
832 u16 ioaddr = dev->base_addr, phy_mode;
834 RDC_DBUG("r6040_timer()", 0);
836 /* Polling PHY Chip Status */
837 if (PHY_MODE == 0x3100)
838 phy_mode = phy_mode_chk(dev);
839 else phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
841 if (phy_mode != lp->phy_mode) {
842 lp->phy_mode = phy_mode;
843 lp->mcr0 = (lp->mcr0 & 0x7fff) | phy_mode;
844 outw(lp->mcr0, ioaddr);
845 printk("<RDC> Link Change %x \n", inw(ioaddr));
849 // printk("<RDC> Timer: CR0 %x CR40 %x CR3C %x\n", inw(ioaddr), inw(ioaddr+0x40), inw(ioaddr+0x3c));
851 /* Timer active again */
852 lp->timer.expires = TIMER_WUT;
853 add_timer(&lp->timer);
856 /* Allocate skb buffer for rx descriptor */
857 static void rx_buf_alloc(struct r6040_private *lp,struct net_device *dev)
859 struct r6040_descriptor *descptr;
860 int ioaddr = dev->base_addr ;
862 RDC_DBUG("rx_buf_alloc()", 0);
863 descptr = lp->rx_insert_ptr;
864 while(lp->rx_free_desc < RX_DCNT){
865 descptr->skb_ptr = dev_alloc_skb(MAX_BUF_SIZE);
866 if (!descptr->skb_ptr) break;
867 descptr->buf = cpu_to_le32(pci_map_single(lp->pdev, descptr->skb_ptr->tail, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE));
868 descptr->status = 0x8000;
869 descptr = descptr->vndescp;
871 outw(lp->mcr0 | 0x0002, ioaddr); //Trigger Rx DMA
873 lp->rx_insert_ptr = descptr;
876 /* Status of PHY CHIP */
877 static int phy_mode_chk(struct net_device *dev)
879 struct r6040_private *lp = dev->priv;
880 int ioaddr = dev->base_addr, phy_dat;
882 RDC_DBUG("phy_mode_chk()", 0);
884 /* PHY Link Status Check */
885 phy_dat = phy_read(ioaddr, lp->phy_addr, 1);
886 if (!(phy_dat & 0x4)) return 0x8000; /* Link Failed, full duplex */
888 /* PHY Chip Auto-Negotiation Status */
889 phy_dat = phy_read(ioaddr, lp->phy_addr, 1);
890 if (phy_dat & 0x0020) {
891 /* Auto Negotiation Mode */
892 phy_dat = phy_read(ioaddr, lp->phy_addr, 5);
893 phy_dat &= phy_read(ioaddr, lp->phy_addr, 4);
894 if (phy_dat & 0x140) phy_dat = 0x8000;
898 phy_dat = phy_read(ioaddr, lp->phy_addr, 0);
899 if (phy_dat & 0x100) phy_dat = 0x8000;
900 else phy_dat = 0x0000;
906 /* Read a word data from PHY Chip */
907 static int phy_read(int ioaddr, int phy_addr, int reg_idx)
911 RDC_DBUG("phy_read()", 0);
912 outw(0x2000 + reg_idx + (phy_addr << 8), ioaddr + 0x20);
913 do{}while( (i++ < 2048) && (inw(ioaddr + 0x20) & 0x2000) );
915 return inw(ioaddr + 0x24);
918 /* Write a word data from PHY Chip */
919 static void phy_write(int ioaddr, int phy_addr, int reg_idx, int dat)
923 RDC_DBUG("phy_write()", 0);
924 outw(dat, ioaddr + 0x28);
925 outw(0x4000 + reg_idx + (phy_addr << 8), ioaddr + 0x20);
926 do{}while( (i++ < 2048) && (inw(ioaddr + 0x20) & 0x4000) );
933 static struct pci_device_id r6040_pci_tbl[] = {
934 {0x17F3, 0x6040, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RDC_6040},
935 //{0x1106, 0x3065, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RDC_6040},
936 {0,} /* terminate list */
938 MODULE_DEVICE_TABLE(pci, r6040_pci_tbl);
940 static struct pci_driver r6040_driver = {
942 .id_table = r6040_pci_tbl,
943 .probe = r6040_init_one,
944 .remove = __devexit_p(r6040_remove_one),
948 static int __init r6040_init (void)
950 RDC_DBUG("r6040_init()", 0);
955 return pci_register_driver (&r6040_driver);
959 static void __exit r6040_cleanup (void)
961 RDC_DBUG("r6040_cleanup()", 0);
962 pci_unregister_driver (&r6040_driver);
965 module_init(r6040_init);
966 module_exit(r6040_cleanup);
971 * compile-command: "gcc -DMODULE -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -c r6040.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`"