2 * RDC R6040 Fast Ethernet MAC support
4 * Copyright (C) 2004 Sten Wang <sten.wang@rdc.com.tw>
6 * Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
7 * Florian Fainelli <florian@openwrt.org>
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the
21 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 * Boston, MA 02110-1301, USA.
25 #include <linux/kernel.h>
26 #include <linux/module.h>
27 #include <linux/version.h>
28 #include <linux/moduleparam.h>
29 #include <linux/string.h>
30 #include <linux/timer.h>
31 #include <linux/errno.h>
32 #include <linux/ioport.h>
33 #include <linux/slab.h>
34 #include <linux/interrupt.h>
35 #include <linux/pci.h>
36 #include <linux/netdevice.h>
37 #include <linux/etherdevice.h>
38 #include <linux/skbuff.h>
39 #include <linux/init.h>
40 #include <linux/delay.h>
41 #include <linux/mii.h>
42 #include <linux/ethtool.h>
43 #include <linux/crc32.h>
44 #include <linux/spinlock.h>
45 #include <linux/bitops.h>
47 #include <linux/irq.h>
48 #include <linux/uaccess.h>
50 #include <asm/processor.h>
52 #define DRV_NAME "r6040"
53 #define DRV_VERSION "0.16"
54 #define DRV_RELDATE "10Nov2007"
56 /* PHY CHIP Address */
57 #define PHY1_ADDR 1 /* For MAC1 */
58 #define PHY2_ADDR 2 /* For MAC2 */
59 #define PHY_MODE 0x3100 /* PHY CHIP Register 0 */
60 #define PHY_CAP 0x01E1 /* PHY CHIP Register 4 */
62 /* Time in jiffies before concluding the transmitter is hung. */
63 #define TX_TIMEOUT (6000 * HZ / 1000)
65 /* RDC MAC I/O Size */
66 #define R6040_IO_SIZE 256
72 #define MCR0 0x00 /* Control register 0 */
73 #define MCR1 0x04 /* Control register 1 */
74 #define MAC_RST 0x0001 /* Reset the MAC */
75 #define MBCR 0x08 /* Bus control */
76 #define MT_ICR 0x0C /* TX interrupt control */
77 #define MR_ICR 0x10 /* RX interrupt control */
78 #define MTPR 0x14 /* TX poll command register */
79 #define MR_BSR 0x18 /* RX buffer size */
80 #define MR_DCR 0x1A /* RX descriptor control */
81 #define MLSR 0x1C /* Last status */
82 #define MMDIO 0x20 /* MDIO control register */
83 #define MDIO_WRITE 0x4000 /* MDIO write */
84 #define MDIO_READ 0x2000 /* MDIO read */
85 #define MMRD 0x24 /* MDIO read data register */
86 #define MMWD 0x28 /* MDIO write data register */
87 #define MTD_SA0 0x2C /* TX descriptor start address 0 */
88 #define MTD_SA1 0x30 /* TX descriptor start address 1 */
89 #define MRD_SA0 0x34 /* RX descriptor start address 0 */
90 #define MRD_SA1 0x38 /* RX descriptor start address 1 */
91 #define MISR 0x3C /* Status register */
92 #define MIER 0x40 /* INT enable register */
93 #define MSK_INT 0x0000 /* Mask off interrupts */
94 #define ME_CISR 0x44 /* Event counter INT status */
95 #define ME_CIER 0x48 /* Event counter INT enable */
96 #define MR_CNT 0x50 /* Successfully received packet counter */
97 #define ME_CNT0 0x52 /* Event counter 0 */
98 #define ME_CNT1 0x54 /* Event counter 1 */
99 #define ME_CNT2 0x56 /* Event counter 2 */
100 #define ME_CNT3 0x58 /* Event counter 3 */
101 #define MT_CNT 0x5A /* Successfully transmit packet counter */
102 #define ME_CNT4 0x5C /* Event counter 4 */
103 #define MP_CNT 0x5E /* Pause frame counter register */
104 #define MAR0 0x60 /* Hash table 0 */
105 #define MAR1 0x62 /* Hash table 1 */
106 #define MAR2 0x64 /* Hash table 2 */
107 #define MAR3 0x66 /* Hash table 3 */
108 #define MID_0L 0x68 /* Multicast address MID0 Low */
109 #define MID_0M 0x6A /* Multicast address MID0 Medium */
110 #define MID_0H 0x6C /* Multicast address MID0 High */
111 #define MID_1L 0x70 /* MID1 Low */
112 #define MID_1M 0x72 /* MID1 Medium */
113 #define MID_1H 0x74 /* MID1 High */
114 #define MID_2L 0x78 /* MID2 Low */
115 #define MID_2M 0x7A /* MID2 Medium */
116 #define MID_2H 0x7C /* MID2 High */
117 #define MID_3L 0x80 /* MID3 Low */
118 #define MID_3M 0x82 /* MID3 Medium */
119 #define MID_3H 0x84 /* MID3 High */
120 #define PHY_CC 0x88 /* PHY status change configuration register */
121 #define PHY_ST 0x8A /* PHY status register */
122 #define MAC_SM 0xAC /* MAC status machine */
123 #define MAC_ID 0xBE /* Identifier register */
125 #define TX_DCNT 0x80 /* TX descriptor count */
126 #define RX_DCNT 0x80 /* RX descriptor count */
127 #define MAX_BUF_SIZE 0x600
128 #define RX_DESC_SIZE (RX_DCNT * sizeof(struct r6040_descriptor))
129 #define TX_DESC_SIZE (TX_DCNT * sizeof(struct r6040_descriptor))
130 #define MBCR_DEFAULT 0x012A /* MAC Bus Control Register */
131 #define MCAST_MAX 4 /* Max number multicast addresses to filter */
134 #define ICPLUS_PHY_ID 0x0243
136 MODULE_AUTHOR("Sten Wang <sten.wang@rdc.com.tw>,"
137 "Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>,"
138 "Florian Fainelli <florian@openwrt.org>");
139 MODULE_LICENSE("GPL");
140 MODULE_DESCRIPTION("RDC R6040 NAPI PCI FastEthernet driver");
142 #define RX_INT 0x0001
143 #define TX_INT 0x0010
144 #define RX_NO_DESC_INT 0x0002
145 #define INT_MASK (RX_INT | TX_INT)
147 struct r6040_descriptor {
148 u16 status, len; /* 0-3 */
149 __le32 buf; /* 4-7 */
150 __le32 ndesc; /* 8-B */
152 char *vbufp; /* 10-13 */
153 struct r6040_descriptor *vndescp; /* 14-17 */
154 struct sk_buff *skb_ptr; /* 18-1B */
155 u32 rev2; /* 1C-1F */
156 } __attribute__((aligned(32)));
158 struct r6040_private {
159 spinlock_t lock; /* driver lock */
160 struct timer_list timer;
161 struct pci_dev *pdev;
162 struct r6040_descriptor *rx_insert_ptr;
163 struct r6040_descriptor *rx_remove_ptr;
164 struct r6040_descriptor *tx_insert_ptr;
165 struct r6040_descriptor *tx_remove_ptr;
166 struct r6040_descriptor *rx_ring;
167 struct r6040_descriptor *tx_ring;
168 dma_addr_t rx_ring_dma;
169 dma_addr_t tx_ring_dma;
170 u16 tx_free_desc, rx_free_desc, phy_addr, phy_mode;
173 struct net_device *dev;
174 struct mii_if_info mii_if;
175 struct napi_struct napi;
179 static char version[] __devinitdata = KERN_INFO DRV_NAME
180 ": RDC R6040 NAPI net driver,"
181 "version "DRV_VERSION " (" DRV_RELDATE ")\n";
183 static int phy_table[] = { PHY1_ADDR, PHY2_ADDR };
185 /* Read a word data from PHY Chip */
186 static int phy_read(void __iomem *ioaddr, int phy_addr, int reg)
191 iowrite16(MDIO_READ + reg + (phy_addr << 8), ioaddr + MMDIO);
192 /* Wait for the read bit to be cleared */
194 cmd = ioread16(ioaddr + MMDIO);
199 return ioread16(ioaddr + MMRD);
202 /* Write a word data from PHY Chip */
203 static void phy_write(void __iomem *ioaddr, int phy_addr, int reg, u16 val)
208 iowrite16(val, ioaddr + MMWD);
209 /* Write the command to the MDIO bus */
210 iowrite16(MDIO_WRITE + reg + (phy_addr << 8), ioaddr + MMDIO);
211 /* Wait for the write bit to be cleared */
213 cmd = ioread16(ioaddr + MMDIO);
214 if (cmd & MDIO_WRITE)
219 static int mdio_read(struct net_device *dev, int mii_id, int reg)
221 struct r6040_private *lp = netdev_priv(dev);
222 void __iomem *ioaddr = lp->base;
224 return (phy_read(ioaddr, lp->phy_addr, reg));
227 static void mdio_write(struct net_device *dev, int mii_id, int reg, int val)
229 struct r6040_private *lp = netdev_priv(dev);
230 void __iomem *ioaddr = lp->base;
232 phy_write(ioaddr, lp->phy_addr, reg, val);
235 static void r6040_free_txbufs(struct net_device *dev)
237 struct r6040_private *lp = netdev_priv(dev);
240 for (i = 0; i < TX_DCNT; i++) {
241 if (lp->tx_insert_ptr->skb_ptr) {
242 pci_unmap_single(lp->pdev, lp->tx_insert_ptr->buf,
243 MAX_BUF_SIZE, PCI_DMA_TODEVICE);
244 dev_kfree_skb(lp->tx_insert_ptr->skb_ptr);
245 lp->rx_insert_ptr->skb_ptr = NULL;
247 lp->tx_insert_ptr = lp->tx_insert_ptr->vndescp;
251 static void r6040_free_rxbufs(struct net_device *dev)
253 struct r6040_private *lp = netdev_priv(dev);
256 for (i = 0; i < RX_DCNT; i++) {
257 if (lp->rx_insert_ptr->skb_ptr) {
258 pci_unmap_single(lp->pdev, lp->rx_insert_ptr->buf,
259 MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
260 dev_kfree_skb(lp->rx_insert_ptr->skb_ptr);
261 lp->rx_insert_ptr->skb_ptr = NULL;
263 lp->rx_insert_ptr = lp->rx_insert_ptr->vndescp;
267 static void r6040_init_ring_desc(struct r6040_descriptor *desc_ring,
268 dma_addr_t desc_dma, int size)
270 struct r6040_descriptor *desc = desc_ring;
271 dma_addr_t mapping = desc_dma;
274 mapping += sizeof(sizeof(*desc));
275 desc->ndesc = cpu_to_le32(mapping);
276 desc->vndescp = desc + 1;
280 desc->ndesc = cpu_to_le32(desc_dma);
281 desc->vndescp = desc_ring;
284 /* Allocate skb buffer for rx descriptor */
285 static void rx_buf_alloc(struct r6040_private *lp, struct net_device *dev)
287 struct r6040_descriptor *descptr;
288 void __iomem *ioaddr = lp->base;
290 descptr = lp->rx_insert_ptr;
291 while (lp->rx_free_desc < RX_DCNT) {
292 descptr->skb_ptr = netdev_alloc_skb(dev, MAX_BUF_SIZE);
294 if (!descptr->skb_ptr)
296 descptr->buf = cpu_to_le32(pci_map_single(lp->pdev,
297 descptr->skb_ptr->data,
298 MAX_BUF_SIZE, PCI_DMA_FROMDEVICE));
299 descptr->status = 0x8000;
300 descptr = descptr->vndescp;
303 iowrite16(lp->mcr0 | 0x0002, ioaddr);
305 lp->rx_insert_ptr = descptr;
308 static void r6040_alloc_txbufs(struct net_device *dev)
310 struct r6040_private *lp = netdev_priv(dev);
311 void __iomem *ioaddr = lp->base;
313 lp->tx_free_desc = TX_DCNT;
315 lp->tx_remove_ptr = lp->tx_insert_ptr = lp->tx_ring;
316 r6040_init_ring_desc(lp->tx_ring, lp->tx_ring_dma, TX_DCNT);
318 iowrite16(lp->tx_ring_dma, ioaddr + MTD_SA0);
319 iowrite16(lp->tx_ring_dma >> 16, ioaddr + MTD_SA1);
322 static void r6040_alloc_rxbufs(struct net_device *dev)
324 struct r6040_private *lp = netdev_priv(dev);
325 void __iomem *ioaddr = lp->base;
327 lp->rx_free_desc = 0;
329 lp->rx_remove_ptr = lp->rx_insert_ptr = lp->rx_ring;
330 r6040_init_ring_desc(lp->rx_ring, lp->rx_ring_dma, RX_DCNT);
332 rx_buf_alloc(lp, dev);
334 iowrite16(lp->rx_ring_dma, ioaddr + MRD_SA0);
335 iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1);
338 static void r6040_tx_timeout(struct net_device *dev)
340 struct r6040_private *priv = netdev_priv(dev);
341 void __iomem *ioaddr = priv->base;
343 printk(KERN_WARNING "%s: transmit timed out, status %4.4x, PHY status "
345 dev->name, ioread16(ioaddr + MIER),
346 mdio_read(dev, priv->mii_if.phy_id, MII_BMSR));
348 disable_irq(dev->irq);
349 napi_disable(&priv->napi);
350 spin_lock(&priv->lock);
351 /* Clear all descriptors */
352 r6040_free_txbufs(dev);
353 r6040_free_rxbufs(dev);
354 r6040_alloc_txbufs(dev);
355 r6040_alloc_rxbufs(dev);
358 iowrite16(MAC_RST, ioaddr + MCR1);
359 spin_unlock(&priv->lock);
360 enable_irq(dev->irq);
362 dev->stats.tx_errors++;
363 netif_wake_queue(dev);
366 static struct net_device_stats *r6040_get_stats(struct net_device *dev)
368 struct r6040_private *priv = netdev_priv(dev);
369 void __iomem *ioaddr = priv->base;
372 spin_lock_irqsave(&priv->lock, flags);
373 dev->stats.rx_crc_errors += ioread8(ioaddr + ME_CNT1);
374 dev->stats.multicast += ioread8(ioaddr + ME_CNT0);
375 spin_unlock_irqrestore(&priv->lock, flags);
380 /* Stop RDC MAC and Free the allocated resource */
381 static void r6040_down(struct net_device *dev)
383 struct r6040_private *lp = netdev_priv(dev);
384 void __iomem *ioaddr = lp->base;
385 struct pci_dev *pdev = lp->pdev;
391 iowrite16(MSK_INT, ioaddr + MIER); /* Mask Off Interrupt */
392 iowrite16(MAC_RST, ioaddr + MCR1); /* Reset RDC MAC */
394 cmd = ioread16(ioaddr + MCR1);
399 /* Restore MAC Address to MIDx */
400 adrp = (u16 *) dev->dev_addr;
401 iowrite16(adrp[0], ioaddr + MID_0L);
402 iowrite16(adrp[1], ioaddr + MID_0M);
403 iowrite16(adrp[2], ioaddr + MID_0H);
404 free_irq(dev->irq, dev);
407 r6040_free_rxbufs(dev);
410 r6040_free_txbufs(dev);
412 /* Free Descriptor memory */
413 pci_free_consistent(pdev, RX_DESC_SIZE, lp->rx_ring, lp->rx_ring_dma);
414 pci_free_consistent(pdev, TX_DESC_SIZE, lp->tx_ring, lp->tx_ring_dma);
417 static int r6040_close(struct net_device *dev)
419 struct r6040_private *lp = netdev_priv(dev);
422 del_timer_sync(&lp->timer);
424 spin_lock_irq(&lp->lock);
425 netif_stop_queue(dev);
427 spin_unlock_irq(&lp->lock);
432 /* Status of PHY CHIP */
433 static int phy_mode_chk(struct net_device *dev)
435 struct r6040_private *lp = netdev_priv(dev);
436 void __iomem *ioaddr = lp->base;
439 /* PHY Link Status Check */
440 phy_dat = phy_read(ioaddr, lp->phy_addr, 1);
441 if (!(phy_dat & 0x4))
442 phy_dat = 0x8000; /* Link Failed, full duplex */
444 /* PHY Chip Auto-Negotiation Status */
445 phy_dat = phy_read(ioaddr, lp->phy_addr, 1);
446 if (phy_dat & 0x0020) {
447 /* Auto Negotiation Mode */
448 phy_dat = phy_read(ioaddr, lp->phy_addr, 5);
449 phy_dat &= phy_read(ioaddr, lp->phy_addr, 4);
451 /* Force full duplex */
457 phy_dat = phy_read(ioaddr, lp->phy_addr, 0);
467 static void r6040_set_carrier(struct mii_if_info *mii)
469 if (phy_mode_chk(mii->dev)) {
470 /* autoneg is off: Link is always assumed to be up */
471 if (!netif_carrier_ok(mii->dev))
472 netif_carrier_on(mii->dev);
474 phy_mode_chk(mii->dev);
477 static int r6040_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
479 struct r6040_private *lp = netdev_priv(dev);
480 struct mii_ioctl_data *data = if_mii(rq);
483 if (!netif_running(dev))
485 spin_lock_irq(&lp->lock);
486 rc = generic_mii_ioctl(&lp->mii_if, data, cmd, NULL);
487 spin_unlock_irq(&lp->lock);
488 r6040_set_carrier(&lp->mii_if);
492 static int r6040_rx(struct net_device *dev, int limit)
494 struct r6040_private *priv = netdev_priv(dev);
496 void __iomem *ioaddr = priv->base;
499 for (count = 0; count < limit; ++count) {
500 struct r6040_descriptor *descptr = priv->rx_remove_ptr;
501 struct sk_buff *skb_ptr;
503 /* Disable RX interrupt */
504 iowrite16(ioread16(ioaddr + MIER) & (~RX_INT), ioaddr + MIER);
505 descptr = priv->rx_remove_ptr;
507 /* Check for errors */
508 err = ioread16(ioaddr + MLSR);
510 dev->stats.rx_errors++;
511 /* RX FIFO over-run */
513 dev->stats.rx_fifo_errors++;
514 /* RX descriptor unavailable */
516 dev->stats.rx_frame_errors++;
517 /* Received packet with length over buffer lenght */
519 dev->stats.rx_over_errors++;
520 /* Received packet with too long or short */
521 if (err & (0x0010 | 0x0008))
522 dev->stats.rx_length_errors++;
523 /* Received packet with CRC errors */
525 spin_lock(&priv->lock);
526 dev->stats.rx_crc_errors++;
527 spin_unlock(&priv->lock);
530 while (priv->rx_free_desc) {
532 if (descptr->status & 0x8000)
534 skb_ptr = descptr->skb_ptr;
536 printk(KERN_ERR "%s: Inconsistent RX"
537 "descriptor chain\n",
541 descptr->skb_ptr = NULL;
542 skb_ptr->dev = priv->dev;
543 /* Do not count the CRC */
544 skb_put(skb_ptr, descptr->len - 4);
545 pci_unmap_single(priv->pdev, descptr->buf,
546 MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
547 skb_ptr->protocol = eth_type_trans(skb_ptr, priv->dev);
548 /* Send to upper layer */
549 netif_receive_skb(skb_ptr);
550 dev->last_rx = jiffies;
551 dev->stats.rx_packets++;
552 dev->stats.rx_bytes += descptr->len;
553 /* To next descriptor */
554 descptr = descptr->vndescp;
555 priv->rx_free_desc--;
557 priv->rx_remove_ptr = descptr;
559 /* Allocate new RX buffer */
560 if (priv->rx_free_desc < RX_DCNT)
561 rx_buf_alloc(priv, priv->dev);
566 static void r6040_tx(struct net_device *dev)
568 struct r6040_private *priv = netdev_priv(dev);
569 struct r6040_descriptor *descptr;
570 void __iomem *ioaddr = priv->base;
571 struct sk_buff *skb_ptr;
574 spin_lock(&priv->lock);
575 descptr = priv->tx_remove_ptr;
576 while (priv->tx_free_desc < TX_DCNT) {
577 /* Check for errors */
578 err = ioread16(ioaddr + MLSR);
581 dev->stats.rx_fifo_errors++;
582 if (err & (0x2000 | 0x4000))
583 dev->stats.tx_carrier_errors++;
585 if (descptr->status & 0x8000)
586 break; /* Not complete */
587 skb_ptr = descptr->skb_ptr;
588 pci_unmap_single(priv->pdev, descptr->buf,
589 skb_ptr->len, PCI_DMA_TODEVICE);
591 dev_kfree_skb_irq(skb_ptr);
592 descptr->skb_ptr = NULL;
593 /* To next descriptor */
594 descptr = descptr->vndescp;
595 priv->tx_free_desc++;
597 priv->tx_remove_ptr = descptr;
599 if (priv->tx_free_desc)
600 netif_wake_queue(dev);
601 spin_unlock(&priv->lock);
604 static int r6040_poll(struct napi_struct *napi, int budget)
606 struct r6040_private *priv =
607 container_of(napi, struct r6040_private, napi);
608 struct net_device *dev = priv->dev;
609 void __iomem *ioaddr = priv->base;
612 work_done = r6040_rx(dev, budget);
614 if (work_done < budget) {
615 netif_rx_complete(dev, napi);
616 /* Enable RX interrupt */
617 iowrite16(ioread16(ioaddr + MIER) | RX_INT, ioaddr + MIER);
622 /* The RDC interrupt handler. */
623 static irqreturn_t r6040_interrupt(int irq, void *dev_id)
625 struct net_device *dev = dev_id;
626 struct r6040_private *lp = netdev_priv(dev);
627 void __iomem *ioaddr = lp->base;
630 /* Mask off RDC MAC interrupt */
631 iowrite16(MSK_INT, ioaddr + MIER);
632 /* Read MISR status and clear */
633 status = ioread16(ioaddr + MISR);
635 if (status == 0x0000 || status == 0xffff)
638 /* RX interrupt request */
640 netif_rx_schedule(dev, &lp->napi);
641 iowrite16(TX_INT, ioaddr + MIER);
644 /* TX interrupt request */
651 #ifdef CONFIG_NET_POLL_CONTROLLER
652 static void r6040_poll_controller(struct net_device *dev)
654 disable_irq(dev->irq);
655 r6040_interrupt(dev->irq, dev);
656 enable_irq(dev->irq);
661 static void r6040_up(struct net_device *dev)
663 struct r6040_private *lp = netdev_priv(dev);
664 void __iomem *ioaddr = lp->base;
666 /* Initialise and alloc RX/TX buffers */
667 r6040_alloc_txbufs(dev);
668 r6040_alloc_rxbufs(dev);
670 /* Buffer Size Register */
671 iowrite16(MAX_BUF_SIZE, ioaddr + MR_BSR);
672 /* Read the PHY ID */
673 lp->switch_sig = phy_read(ioaddr, 0, 2);
675 if (lp->switch_sig == ICPLUS_PHY_ID) {
676 phy_write(ioaddr, 29, 31, 0x175C); /* Enable registers */
677 lp->phy_mode = 0x8000;
680 phy_write(ioaddr, lp->phy_addr, 4, PHY_CAP);
681 phy_write(ioaddr, lp->phy_addr, 0, PHY_MODE);
683 if (PHY_MODE == 0x3100)
684 lp->phy_mode = phy_mode_chk(dev);
686 lp->phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
688 /* MAC Bus Control Register */
689 iowrite16(MBCR_DEFAULT, ioaddr + MBCR);
691 /* MAC TX/RX Enable */
692 lp->mcr0 |= lp->phy_mode;
693 iowrite16(lp->mcr0, ioaddr);
695 /* set interrupt waiting time and packet numbers */
696 iowrite16(0x0F06, ioaddr + MT_ICR);
697 iowrite16(0x0F06, ioaddr + MR_ICR);
699 /* improve performance (by RDC guys) */
700 phy_write(ioaddr, 30, 17, (phy_read(ioaddr, 30, 17) | 0x4000));
701 phy_write(ioaddr, 30, 17, ~((~phy_read(ioaddr, 30, 17)) | 0x2000));
702 phy_write(ioaddr, 0, 19, 0x0000);
703 phy_write(ioaddr, 0, 30, 0x01F0);
705 /* Interrupt Mask Register */
706 iowrite16(INT_MASK, ioaddr + MIER);
710 A periodic timer routine
711 Polling PHY Chip Link Status
713 static void r6040_timer(unsigned long data)
715 struct net_device *dev = (struct net_device *)data;
716 struct r6040_private *lp = netdev_priv(dev);
717 void __iomem *ioaddr = lp->base;
720 /* Polling PHY Chip Status */
721 if (PHY_MODE == 0x3100)
722 phy_mode = phy_mode_chk(dev);
724 phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
726 if (phy_mode != lp->phy_mode) {
727 lp->phy_mode = phy_mode;
728 lp->mcr0 = (lp->mcr0 & 0x7fff) | phy_mode;
729 iowrite16(lp->mcr0, ioaddr);
730 printk(KERN_INFO "Link Change %x \n", ioread16(ioaddr));
733 /* Timer active again */
734 mod_timer(&lp->timer, jiffies + round_jiffies(HZ));
737 /* Read/set MAC address routines */
738 static void r6040_mac_address(struct net_device *dev)
740 struct r6040_private *lp = netdev_priv(dev);
741 void __iomem *ioaddr = lp->base;
744 /* MAC operation register */
745 iowrite16(0x01, ioaddr + MCR1); /* Reset MAC */
746 iowrite16(2, ioaddr + MAC_SM); /* Reset internal state machine */
747 iowrite16(0, ioaddr + MAC_SM);
750 /* Restore MAC Address */
751 adrp = (u16 *) dev->dev_addr;
752 iowrite16(adrp[0], ioaddr + MID_0L);
753 iowrite16(adrp[1], ioaddr + MID_0M);
754 iowrite16(adrp[2], ioaddr + MID_0H);
757 static int r6040_open(struct net_device *dev)
759 struct r6040_private *lp = netdev_priv(dev);
762 /* Request IRQ and Register interrupt handler */
763 ret = request_irq(dev->irq, &r6040_interrupt,
764 IRQF_SHARED, dev->name, dev);
768 /* Set MAC address */
769 r6040_mac_address(dev);
771 /* Allocate Descriptor memory */
773 pci_alloc_consistent(lp->pdev, RX_DESC_SIZE, &lp->rx_ring_dma);
778 pci_alloc_consistent(lp->pdev, TX_DESC_SIZE, &lp->tx_ring_dma);
780 pci_free_consistent(lp->pdev, RX_DESC_SIZE, lp->rx_ring,
787 napi_enable(&lp->napi);
788 netif_start_queue(dev);
790 /* set and active a timer process */
791 setup_timer(&lp->timer, r6040_timer, (unsigned long) dev);
792 if (lp->switch_sig != ICPLUS_PHY_ID)
793 mod_timer(&lp->timer, jiffies + HZ);
797 static int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev)
799 struct r6040_private *lp = netdev_priv(dev);
800 struct r6040_descriptor *descptr;
801 void __iomem *ioaddr = lp->base;
803 int ret = NETDEV_TX_OK;
805 /* Critical Section */
806 spin_lock_irqsave(&lp->lock, flags);
808 /* TX resource check */
809 if (!lp->tx_free_desc) {
810 spin_unlock_irqrestore(&lp->lock, flags);
811 netif_stop_queue(dev);
812 printk(KERN_ERR DRV_NAME ": no tx descriptor\n");
813 ret = NETDEV_TX_BUSY;
817 /* Statistic Counter */
818 dev->stats.tx_packets++;
819 dev->stats.tx_bytes += skb->len;
820 /* Set TX descriptor & Transmit it */
822 descptr = lp->tx_insert_ptr;
826 descptr->len = skb->len;
828 descptr->skb_ptr = skb;
829 descptr->buf = cpu_to_le32(pci_map_single(lp->pdev,
830 skb->data, skb->len, PCI_DMA_TODEVICE));
831 descptr->status = 0x8000;
832 /* Trigger the MAC to check the TX descriptor */
833 iowrite16(0x01, ioaddr + MTPR);
834 lp->tx_insert_ptr = descptr->vndescp;
836 /* If no tx resource, stop */
837 if (!lp->tx_free_desc)
838 netif_stop_queue(dev);
840 dev->trans_start = jiffies;
841 spin_unlock_irqrestore(&lp->lock, flags);
845 static void r6040_multicast_list(struct net_device *dev)
847 struct r6040_private *lp = netdev_priv(dev);
848 void __iomem *ioaddr = lp->base;
852 struct dev_mc_list *dmi = dev->mc_list;
856 adrp = (u16 *)dev->dev_addr;
857 iowrite16(adrp[0], ioaddr + MID_0L);
858 iowrite16(adrp[1], ioaddr + MID_0M);
859 iowrite16(adrp[2], ioaddr + MID_0H);
861 /* Promiscous Mode */
862 spin_lock_irqsave(&lp->lock, flags);
864 /* Clear AMCP & PROM bits */
865 reg = ioread16(ioaddr) & ~0x0120;
866 if (dev->flags & IFF_PROMISC) {
870 /* Too many multicast addresses
871 * accept all traffic */
872 else if ((dev->mc_count > MCAST_MAX)
873 || (dev->flags & IFF_ALLMULTI))
876 iowrite16(reg, ioaddr);
877 spin_unlock_irqrestore(&lp->lock, flags);
879 /* Build the hash table */
880 if (dev->mc_count > MCAST_MAX) {
884 for (i = 0; i < 4; i++)
887 for (i = 0; i < dev->mc_count; i++) {
888 char *addrs = dmi->dmi_addr;
895 crc = ether_crc_le(6, addrs);
897 hash_table[crc >> 4] |= 1 << (15 - (crc & 0xf));
899 /* Write the index of the hash table */
900 for (i = 0; i < 4; i++)
901 iowrite16(hash_table[i] << 14, ioaddr + MCR1);
902 /* Fill the MAC hash tables with their values */
903 iowrite16(hash_table[0], ioaddr + MAR0);
904 iowrite16(hash_table[1], ioaddr + MAR1);
905 iowrite16(hash_table[2], ioaddr + MAR2);
906 iowrite16(hash_table[3], ioaddr + MAR3);
908 /* Multicast Address 1~4 case */
909 for (i = 0, dmi; (i < dev->mc_count) && (i < MCAST_MAX); i++) {
910 adrp = (u16 *)dmi->dmi_addr;
911 iowrite16(adrp[0], ioaddr + MID_1L + 8*i);
912 iowrite16(adrp[1], ioaddr + MID_1M + 8*i);
913 iowrite16(adrp[2], ioaddr + MID_1H + 8*i);
916 for (i = dev->mc_count; i < MCAST_MAX; i++) {
917 iowrite16(0xffff, ioaddr + MID_0L + 8*i);
918 iowrite16(0xffff, ioaddr + MID_0M + 8*i);
919 iowrite16(0xffff, ioaddr + MID_0H + 8*i);
923 static void netdev_get_drvinfo(struct net_device *dev,
924 struct ethtool_drvinfo *info)
926 struct r6040_private *rp = netdev_priv(dev);
928 strcpy(info->driver, DRV_NAME);
929 strcpy(info->version, DRV_VERSION);
930 strcpy(info->bus_info, pci_name(rp->pdev));
933 static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
935 struct r6040_private *rp = netdev_priv(dev);
938 spin_lock_irq(&rp->lock);
939 rc = mii_ethtool_gset(&rp->mii_if, cmd);
940 spin_unlock_irq(&rp->lock);
945 static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
947 struct r6040_private *rp = netdev_priv(dev);
950 spin_lock_irq(&rp->lock);
951 rc = mii_ethtool_sset(&rp->mii_if, cmd);
952 spin_unlock_irq(&rp->lock);
953 r6040_set_carrier(&rp->mii_if);
958 static u32 netdev_get_link(struct net_device *dev)
960 struct r6040_private *rp = netdev_priv(dev);
962 return mii_link_ok(&rp->mii_if);
965 static struct ethtool_ops netdev_ethtool_ops = {
966 .get_drvinfo = netdev_get_drvinfo,
967 .get_settings = netdev_get_settings,
968 .set_settings = netdev_set_settings,
969 .get_link = netdev_get_link,
972 static int __devinit r6040_init_one(struct pci_dev *pdev,
973 const struct pci_device_id *ent)
975 struct net_device *dev;
976 struct r6040_private *lp;
977 void __iomem *ioaddr;
978 int err, io_size = R6040_IO_SIZE;
979 static int card_idx = -1;
984 printk(KERN_INFO "%s\n", version);
986 err = pci_enable_device(pdev);
990 /* this should always be supported */
991 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
992 printk(KERN_ERR DRV_NAME "32-bit PCI DMA addresses"
993 "not supported by the card\n");
996 if (pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)) {
997 printk(KERN_ERR DRV_NAME "32-bit PCI DMA addresses"
998 "not supported by the card\n");
1003 if (pci_resource_len(pdev, 0) < io_size) {
1004 printk(KERN_ERR "Insufficient PCI resources, aborting\n");
1008 pioaddr = pci_resource_start(pdev, 0); /* IO map base address */
1009 pci_set_master(pdev);
1011 dev = alloc_etherdev(sizeof(struct r6040_private));
1013 printk(KERN_ERR "Failed to allocate etherdev\n");
1016 SET_NETDEV_DEV(dev, &pdev->dev);
1017 lp = netdev_priv(dev);
1020 if (pci_request_regions(pdev, DRV_NAME)) {
1021 printk(KERN_ERR DRV_NAME ": Failed to request PCI regions\n");
1023 goto err_out_disable;
1026 ioaddr = pci_iomap(pdev, bar, io_size);
1028 printk(KERN_ERR "ioremap failed for device %s\n",
1033 /* Init system & device */
1035 dev->irq = pdev->irq;
1037 spin_lock_init(&lp->lock);
1038 pci_set_drvdata(pdev, dev);
1040 /* Set MAC address */
1043 adrp = (u16 *)dev->dev_addr;
1044 adrp[0] = ioread16(ioaddr + MID_0L);
1045 adrp[1] = ioread16(ioaddr + MID_0M);
1046 adrp[2] = ioread16(ioaddr + MID_0H);
1048 /* Link new device into r6040_root_dev */
1051 /* Init RDC private data */
1053 lp->phy_addr = phy_table[card_idx];
1056 /* The RDC-specific entries in the device structure. */
1057 dev->open = &r6040_open;
1058 dev->hard_start_xmit = &r6040_start_xmit;
1059 dev->stop = &r6040_close;
1060 dev->get_stats = r6040_get_stats;
1061 dev->set_multicast_list = &r6040_multicast_list;
1062 dev->do_ioctl = &r6040_ioctl;
1063 dev->ethtool_ops = &netdev_ethtool_ops;
1064 dev->tx_timeout = &r6040_tx_timeout;
1065 dev->watchdog_timeo = TX_TIMEOUT;
1066 #ifdef CONFIG_NET_POLL_CONTROLLER
1067 dev->poll_controller = r6040_poll_controller;
1069 netif_napi_add(dev, &lp->napi, r6040_poll, 64);
1070 lp->mii_if.dev = dev;
1071 lp->mii_if.mdio_read = mdio_read;
1072 lp->mii_if.mdio_write = mdio_write;
1073 lp->mii_if.phy_id = lp->phy_addr;
1074 lp->mii_if.phy_id_mask = 0x1f;
1075 lp->mii_if.reg_num_mask = 0x1f;
1077 /* Register net device. After this dev->name assign */
1078 err = register_netdev(dev);
1080 printk(KERN_ERR DRV_NAME ": Failed to register net device\n");
1086 pci_release_regions(pdev);
1088 pci_disable_device(pdev);
1089 pci_set_drvdata(pdev, NULL);
1095 static void __devexit r6040_remove_one(struct pci_dev *pdev)
1097 struct net_device *dev = pci_get_drvdata(pdev);
1099 unregister_netdev(dev);
1100 pci_release_regions(pdev);
1102 pci_disable_device(pdev);
1103 pci_set_drvdata(pdev, NULL);
1107 static struct pci_device_id r6040_pci_tbl[] = {
1108 { PCI_DEVICE(PCI_VENDOR_ID_RDC, 0x6040) },
1111 MODULE_DEVICE_TABLE(pci, r6040_pci_tbl);
1113 static struct pci_driver r6040_driver = {
1115 .id_table = r6040_pci_tbl,
1116 .probe = r6040_init_one,
1117 .remove = __devexit_p(r6040_remove_one),
1121 static int __init r6040_init(void)
1123 return pci_register_driver(&r6040_driver);
1127 static void __exit r6040_cleanup(void)
1129 pci_unregister_driver(&r6040_driver);
1132 module_init(r6040_init);
1133 module_exit(r6040_cleanup);