2 sis190.c: Silicon Integrated Systems SiS190 ethernet driver
4 Copyright (c) 2003 K.M. Liu <kmliu@sis.com>
5 Copyright (c) 2003, 2004 Jeff Garzik <jgarzik@pobox.com>
6 Copyright (c) 2003, 2004, 2005 Francois Romieu <romieu@fr.zoreil.com>
8 Based on r8169.c, tg3.c, 8139cp.c, skge.c, epic100.c and SiS 190/191
11 This software may be used and distributed according to the terms of
12 the GNU General Public License (GPL), incorporated herein by reference.
13 Drivers based on or derived from this code fall under the GPL and must
14 retain the authorship, copyright and license notice. This file is not
15 a complete program and may only be used when the entire operating
16 system is licensed under the GPL.
18 See the file COPYING in this distribution for more information.
22 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24 #include <linux/interrupt.h>
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/netdevice.h>
28 #include <linux/rtnetlink.h>
29 #include <linux/etherdevice.h>
30 #include <linux/ethtool.h>
31 #include <linux/pci.h>
32 #include <linux/mii.h>
33 #include <linux/delay.h>
34 #include <linux/crc32.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/slab.h>
39 #define PHY_MAX_ADDR 32
40 #define PHY_ID_ANY 0x1f
41 #define MII_REG_ANY 0x1f
43 #define DRV_VERSION "1.4"
44 #define DRV_NAME "sis190"
45 #define SIS190_DRIVER_NAME DRV_NAME " Gigabit Ethernet driver " DRV_VERSION
47 #define sis190_rx_skb netif_rx
48 #define sis190_rx_quota(count, quota) count
50 #define NUM_TX_DESC 64 /* [8..1024] */
51 #define NUM_RX_DESC 64 /* [8..8192] */
52 #define TX_RING_BYTES (NUM_TX_DESC * sizeof(struct TxDesc))
53 #define RX_RING_BYTES (NUM_RX_DESC * sizeof(struct RxDesc))
54 #define RX_BUF_SIZE 1536
55 #define RX_BUF_MASK 0xfff8
57 #define SIS190_REGS_SIZE 0x80
58 #define SIS190_TX_TIMEOUT (6*HZ)
59 #define SIS190_PHY_TIMEOUT (10*HZ)
60 #define SIS190_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | \
61 NETIF_MSG_LINK | NETIF_MSG_IFUP | \
64 /* Enhanced PHY access register bit definitions */
65 #define EhnMIIread 0x0000
66 #define EhnMIIwrite 0x0020
67 #define EhnMIIdataShift 16
68 #define EhnMIIpmdShift 6 /* 7016 only */
69 #define EhnMIIregShift 11
70 #define EhnMIIreq 0x0010
71 #define EhnMIInotDone 0x0010
73 /* Write/read MMIO register */
74 #define SIS_W8(reg, val) writeb ((val), ioaddr + (reg))
75 #define SIS_W16(reg, val) writew ((val), ioaddr + (reg))
76 #define SIS_W32(reg, val) writel ((val), ioaddr + (reg))
77 #define SIS_R8(reg) readb (ioaddr + (reg))
78 #define SIS_R16(reg) readw (ioaddr + (reg))
79 #define SIS_R32(reg) readl (ioaddr + (reg))
81 #define SIS_PCI_COMMIT() SIS_R32(IntrControl)
83 enum sis190_registers {
85 TxDescStartAddr = 0x04,
86 rsv0 = 0x08, // reserved
87 TxSts = 0x0c, // unused (Control/Status)
89 RxDescStartAddr = 0x14,
90 rsv1 = 0x18, // reserved
91 RxSts = 0x1c, // unused
95 IntrTimer = 0x2c, // unused (Interrupt Timer)
96 PMControl = 0x30, // unused (Power Mgmt Control/Status)
97 rsv2 = 0x34, // reserved
100 StationControl = 0x40,
102 GIoCR = 0x48, // unused (GMAC IO Compensation)
103 GIoCtrl = 0x4c, // unused (GMAC IO Control)
105 TxLimit = 0x54, // unused (Tx MAC Timer/TryLimit)
106 RGDelay = 0x58, // unused (RGMII Tx Internal Delay)
107 rsv3 = 0x5c, // reserved
111 // Undocumented = 0x6c,
113 RxWolData = 0x74, // unused (Rx WOL Data Access)
114 RxMPSControl = 0x78, // unused (Rx MPS Control)
115 rsv4 = 0x7c, // reserved
118 enum sis190_register_content {
120 SoftInt = 0x40000000, // unused
121 Timeup = 0x20000000, // unused
122 PauseFrame = 0x00080000, // unused
123 MagicPacket = 0x00040000, // unused
124 WakeupFrame = 0x00020000, // unused
125 LinkChange = 0x00010000,
126 RxQEmpty = 0x00000080,
128 TxQ1Empty = 0x00000020, // unused
129 TxQ1Int = 0x00000010,
130 TxQ0Empty = 0x00000008, // unused
131 TxQ0Int = 0x00000004,
137 CmdRxEnb = 0x08, // unused
139 RxBufEmpty = 0x01, // unused
142 Cfg9346_Lock = 0x00, // unused
143 Cfg9346_Unlock = 0xc0, // unused
146 AcceptErr = 0x20, // unused
147 AcceptRunt = 0x10, // unused
148 AcceptBroadcast = 0x0800,
149 AcceptMulticast = 0x0400,
150 AcceptMyPhys = 0x0200,
151 AcceptAllPhys = 0x0100,
155 RxCfgDMAShift = 8, // 0x1a in RxControl ?
158 TxInterFrameGapShift = 24,
159 TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
161 LinkStatus = 0x02, // unused
162 FullDup = 0x01, // unused
165 TBILinkOK = 0x02000000, // unused
182 enum _DescStatusBit {
184 OWNbit = 0x80000000, // RXOWN/TXOWN
185 INTbit = 0x40000000, // RXINT/TXINT
186 CRCbit = 0x00020000, // CRCOFF/CRCEN
187 PADbit = 0x00010000, // PREADD/PADEN
189 RingEnd = 0x80000000,
191 LSEN = 0x08000000, // TSO ? -- FR
210 ColCountMask = 0x0000ffff,
224 RxDescCountMask = 0x7f000000, // multi-desc pkt when > 1 ? -- FR
233 RxSizeMask = 0x0000ffff
235 * The asic could apparently do vlan, TSO, jumbo (sis191 only) and
236 * provide two (unused with Linux) Tx queues. No publicly
237 * available documentation alas.
241 enum sis190_eeprom_access_register_bits {
242 EECS = 0x00000001, // unused
243 EECLK = 0x00000002, // unused
244 EEDO = 0x00000008, // unused
245 EEDI = 0x00000004, // unused
248 EEWOP = 0x00000100 // unused
251 /* EEPROM Addresses */
252 enum sis190_eeprom_address {
253 EEPROMSignature = 0x00,
254 EEPROMCLK = 0x01, // unused
259 enum sis190_feature {
265 struct sis190_private {
266 void __iomem *mmio_addr;
267 struct pci_dev *pci_dev;
268 struct net_device *dev;
277 struct RxDesc *RxDescRing;
278 struct TxDesc *TxDescRing;
279 struct sk_buff *Rx_skbuff[NUM_RX_DESC];
280 struct sk_buff *Tx_skbuff[NUM_TX_DESC];
281 struct work_struct phy_task;
282 struct timer_list timer;
284 struct mii_if_info mii_if;
285 struct list_head first_phy;
296 struct list_head list;
303 enum sis190_phy_type {
310 static struct mii_chip_info {
315 } mii_chip_table[] = {
316 { "Atheros PHY", { 0x004d, 0xd010 }, LAN, 0 },
317 { "Atheros PHY AR8012", { 0x004d, 0xd020 }, LAN, 0 },
318 { "Broadcom PHY BCM5461", { 0x0020, 0x60c0 }, LAN, F_PHY_BCM5461 },
319 { "Broadcom PHY AC131", { 0x0143, 0xbc70 }, LAN, 0 },
320 { "Agere PHY ET1101B", { 0x0282, 0xf010 }, LAN, 0 },
321 { "Marvell PHY 88E1111", { 0x0141, 0x0cc0 }, LAN, F_PHY_88E1111 },
322 { "Realtek PHY RTL8201", { 0x0000, 0x8200 }, LAN, 0 },
326 static const struct {
328 } sis_chip_info[] = {
329 { "SiS 190 PCI Fast Ethernet adapter" },
330 { "SiS 191 PCI Gigabit Ethernet adapter" },
333 static DEFINE_PCI_DEVICE_TABLE(sis190_pci_tbl) = {
334 { PCI_DEVICE(PCI_VENDOR_ID_SI, 0x0190), 0, 0, 0 },
335 { PCI_DEVICE(PCI_VENDOR_ID_SI, 0x0191), 0, 0, 1 },
339 MODULE_DEVICE_TABLE(pci, sis190_pci_tbl);
341 static int rx_copybreak = 200;
347 MODULE_DESCRIPTION("SiS sis190/191 Gigabit Ethernet driver");
348 module_param(rx_copybreak, int, 0);
349 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
350 module_param_named(debug, debug.msg_enable, int, 0);
351 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
352 MODULE_AUTHOR("K.M. Liu <kmliu@sis.com>, Ueimor <romieu@fr.zoreil.com>");
353 MODULE_VERSION(DRV_VERSION);
354 MODULE_LICENSE("GPL");
356 static const u32 sis190_intr_mask =
357 RxQEmpty | RxQInt | TxQ1Int | TxQ0Int | RxHalt | TxHalt | LinkChange;
360 * Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
361 * The chips use a 64 element hash table based on the Ethernet CRC.
363 static const int multicast_filter_limit = 32;
365 static void __mdio_cmd(void __iomem *ioaddr, u32 ctl)
369 SIS_W32(GMIIControl, ctl);
373 for (i = 0; i < 100; i++) {
374 if (!(SIS_R32(GMIIControl) & EhnMIInotDone))
380 pr_err("PHY command failed !\n");
383 static void mdio_write(void __iomem *ioaddr, int phy_id, int reg, int val)
385 __mdio_cmd(ioaddr, EhnMIIreq | EhnMIIwrite |
386 (((u32) reg) << EhnMIIregShift) | (phy_id << EhnMIIpmdShift) |
387 (((u32) val) << EhnMIIdataShift));
390 static int mdio_read(void __iomem *ioaddr, int phy_id, int reg)
392 __mdio_cmd(ioaddr, EhnMIIreq | EhnMIIread |
393 (((u32) reg) << EhnMIIregShift) | (phy_id << EhnMIIpmdShift));
395 return (u16) (SIS_R32(GMIIControl) >> EhnMIIdataShift);
398 static void __mdio_write(struct net_device *dev, int phy_id, int reg, int val)
400 struct sis190_private *tp = netdev_priv(dev);
402 mdio_write(tp->mmio_addr, phy_id, reg, val);
405 static int __mdio_read(struct net_device *dev, int phy_id, int reg)
407 struct sis190_private *tp = netdev_priv(dev);
409 return mdio_read(tp->mmio_addr, phy_id, reg);
412 static u16 mdio_read_latched(void __iomem *ioaddr, int phy_id, int reg)
414 mdio_read(ioaddr, phy_id, reg);
415 return mdio_read(ioaddr, phy_id, reg);
418 static u16 sis190_read_eeprom(void __iomem *ioaddr, u32 reg)
423 if (!(SIS_R32(ROMControl) & 0x0002))
426 SIS_W32(ROMInterface, EEREQ | EEROP | (reg << 10));
428 for (i = 0; i < 200; i++) {
429 if (!(SIS_R32(ROMInterface) & EEREQ)) {
430 data = (SIS_R32(ROMInterface) & 0xffff0000) >> 16;
439 static void sis190_irq_mask_and_ack(void __iomem *ioaddr)
441 SIS_W32(IntrMask, 0x00);
442 SIS_W32(IntrStatus, 0xffffffff);
446 static void sis190_asic_down(void __iomem *ioaddr)
448 /* Stop the chip's Tx and Rx DMA processes. */
450 SIS_W32(TxControl, 0x1a00);
451 SIS_W32(RxControl, 0x1a00);
453 sis190_irq_mask_and_ack(ioaddr);
456 static void sis190_mark_as_last_descriptor(struct RxDesc *desc)
458 desc->size |= cpu_to_le32(RingEnd);
461 static inline void sis190_give_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
463 u32 eor = le32_to_cpu(desc->size) & RingEnd;
466 desc->size = cpu_to_le32((rx_buf_sz & RX_BUF_MASK) | eor);
468 desc->status = cpu_to_le32(OWNbit | INTbit);
471 static inline void sis190_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
474 desc->addr = cpu_to_le32(mapping);
475 sis190_give_to_asic(desc, rx_buf_sz);
478 static inline void sis190_make_unusable_by_asic(struct RxDesc *desc)
481 desc->addr = cpu_to_le32(0xdeadbeef);
482 desc->size &= cpu_to_le32(RingEnd);
487 static struct sk_buff *sis190_alloc_rx_skb(struct sis190_private *tp,
490 u32 rx_buf_sz = tp->rx_buf_sz;
494 skb = netdev_alloc_skb(tp->dev, rx_buf_sz);
496 goto skb_alloc_failed;
497 mapping = pci_map_single(tp->pci_dev, skb->data, tp->rx_buf_sz,
499 if (pci_dma_mapping_error(tp->pci_dev, mapping))
501 sis190_map_to_asic(desc, mapping, rx_buf_sz);
506 dev_kfree_skb_any(skb);
508 sis190_make_unusable_by_asic(desc);
512 static u32 sis190_rx_fill(struct sis190_private *tp, struct net_device *dev,
517 for (cur = start; cur < end; cur++) {
518 unsigned int i = cur % NUM_RX_DESC;
520 if (tp->Rx_skbuff[i])
523 tp->Rx_skbuff[i] = sis190_alloc_rx_skb(tp, tp->RxDescRing + i);
525 if (!tp->Rx_skbuff[i])
531 static bool sis190_try_rx_copy(struct sis190_private *tp,
532 struct sk_buff **sk_buff, int pkt_size,
538 if (pkt_size >= rx_copybreak)
541 skb = netdev_alloc_skb_ip_align(tp->dev, pkt_size);
545 pci_dma_sync_single_for_cpu(tp->pci_dev, addr, tp->rx_buf_sz,
547 skb_copy_to_linear_data(skb, sk_buff[0]->data, pkt_size);
554 static inline int sis190_rx_pkt_err(u32 status, struct net_device_stats *stats)
556 #define ErrMask (OVRUN | SHORT | LIMIT | MIIER | NIBON | COLON | ABORT)
558 if ((status & CRCOK) && !(status & ErrMask))
561 if (!(status & CRCOK))
562 stats->rx_crc_errors++;
563 else if (status & OVRUN)
564 stats->rx_over_errors++;
565 else if (status & (SHORT | LIMIT))
566 stats->rx_length_errors++;
567 else if (status & (MIIER | NIBON | COLON))
568 stats->rx_frame_errors++;
574 static int sis190_rx_interrupt(struct net_device *dev,
575 struct sis190_private *tp, void __iomem *ioaddr)
577 struct net_device_stats *stats = &dev->stats;
578 u32 rx_left, cur_rx = tp->cur_rx;
581 rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
582 rx_left = sis190_rx_quota(rx_left, (u32) dev->quota);
584 for (; rx_left > 0; rx_left--, cur_rx++) {
585 unsigned int entry = cur_rx % NUM_RX_DESC;
586 struct RxDesc *desc = tp->RxDescRing + entry;
589 if (le32_to_cpu(desc->status) & OWNbit)
592 status = le32_to_cpu(desc->PSize);
594 //netif_info(tp, intr, dev, "Rx PSize = %08x\n", status);
596 if (sis190_rx_pkt_err(status, stats) < 0)
597 sis190_give_to_asic(desc, tp->rx_buf_sz);
599 struct sk_buff *skb = tp->Rx_skbuff[entry];
600 dma_addr_t addr = le32_to_cpu(desc->addr);
601 int pkt_size = (status & RxSizeMask) - 4;
602 struct pci_dev *pdev = tp->pci_dev;
604 if (unlikely(pkt_size > tp->rx_buf_sz)) {
605 netif_info(tp, intr, dev,
606 "(frag) status = %08x\n", status);
608 stats->rx_length_errors++;
609 sis190_give_to_asic(desc, tp->rx_buf_sz);
614 if (sis190_try_rx_copy(tp, &skb, pkt_size, addr)) {
615 pci_dma_sync_single_for_device(pdev, addr,
616 tp->rx_buf_sz, PCI_DMA_FROMDEVICE);
617 sis190_give_to_asic(desc, tp->rx_buf_sz);
619 pci_unmap_single(pdev, addr, tp->rx_buf_sz,
621 tp->Rx_skbuff[entry] = NULL;
622 sis190_make_unusable_by_asic(desc);
625 skb_put(skb, pkt_size);
626 skb->protocol = eth_type_trans(skb, dev);
631 stats->rx_bytes += pkt_size;
632 if ((status & BCAST) == MCAST)
636 count = cur_rx - tp->cur_rx;
639 delta = sis190_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
641 netif_info(tp, intr, dev, "no Rx buffer allocated\n");
642 tp->dirty_rx += delta;
644 if ((tp->dirty_rx + NUM_RX_DESC) == tp->cur_rx)
645 netif_emerg(tp, intr, dev, "Rx buffers exhausted\n");
650 static void sis190_unmap_tx_skb(struct pci_dev *pdev, struct sk_buff *skb,
655 len = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len;
657 pci_unmap_single(pdev, le32_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
659 memset(desc, 0x00, sizeof(*desc));
662 static inline int sis190_tx_pkt_err(u32 status, struct net_device_stats *stats)
664 #define TxErrMask (WND | TABRT | FIFO | LINK)
666 if (!unlikely(status & TxErrMask))
670 stats->tx_window_errors++;
672 stats->tx_aborted_errors++;
674 stats->tx_fifo_errors++;
676 stats->tx_carrier_errors++;
683 static void sis190_tx_interrupt(struct net_device *dev,
684 struct sis190_private *tp, void __iomem *ioaddr)
686 struct net_device_stats *stats = &dev->stats;
687 u32 pending, dirty_tx = tp->dirty_tx;
689 * It would not be needed if queueing was allowed to be enabled
690 * again too early (hint: think preempt and unclocked smp systems).
692 unsigned int queue_stopped;
695 pending = tp->cur_tx - dirty_tx;
696 queue_stopped = (pending == NUM_TX_DESC);
698 for (; pending; pending--, dirty_tx++) {
699 unsigned int entry = dirty_tx % NUM_TX_DESC;
700 struct TxDesc *txd = tp->TxDescRing + entry;
701 u32 status = le32_to_cpu(txd->status);
707 skb = tp->Tx_skbuff[entry];
709 if (likely(sis190_tx_pkt_err(status, stats) == 0)) {
711 stats->tx_bytes += skb->len;
712 stats->collisions += ((status & ColCountMask) - 1);
715 sis190_unmap_tx_skb(tp->pci_dev, skb, txd);
716 tp->Tx_skbuff[entry] = NULL;
717 dev_kfree_skb_irq(skb);
720 if (tp->dirty_tx != dirty_tx) {
721 tp->dirty_tx = dirty_tx;
724 netif_wake_queue(dev);
729 * The interrupt handler does all of the Rx thread work and cleans up after
732 static irqreturn_t sis190_irq(int irq, void *__dev)
734 struct net_device *dev = __dev;
735 struct sis190_private *tp = netdev_priv(dev);
736 void __iomem *ioaddr = tp->mmio_addr;
737 unsigned int handled = 0;
740 status = SIS_R32(IntrStatus);
742 if ((status == 0xffffffff) || !status)
747 if (unlikely(!netif_running(dev))) {
748 sis190_asic_down(ioaddr);
752 SIS_W32(IntrStatus, status);
754 // netif_info(tp, intr, dev, "status = %08x\n", status);
756 if (status & LinkChange) {
757 netif_info(tp, intr, dev, "link change\n");
758 del_timer(&tp->timer);
759 schedule_work(&tp->phy_task);
763 sis190_rx_interrupt(dev, tp, ioaddr);
765 if (status & TxQ0Int)
766 sis190_tx_interrupt(dev, tp, ioaddr);
768 return IRQ_RETVAL(handled);
771 #ifdef CONFIG_NET_POLL_CONTROLLER
772 static void sis190_netpoll(struct net_device *dev)
774 struct sis190_private *tp = netdev_priv(dev);
775 const int irq = tp->pci_dev->irq;
778 sis190_irq(irq, dev);
783 static void sis190_free_rx_skb(struct sis190_private *tp,
784 struct sk_buff **sk_buff, struct RxDesc *desc)
786 struct pci_dev *pdev = tp->pci_dev;
788 pci_unmap_single(pdev, le32_to_cpu(desc->addr), tp->rx_buf_sz,
790 dev_kfree_skb(*sk_buff);
792 sis190_make_unusable_by_asic(desc);
795 static void sis190_rx_clear(struct sis190_private *tp)
799 for (i = 0; i < NUM_RX_DESC; i++) {
800 if (!tp->Rx_skbuff[i])
802 sis190_free_rx_skb(tp, tp->Rx_skbuff + i, tp->RxDescRing + i);
806 static void sis190_init_ring_indexes(struct sis190_private *tp)
808 tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
811 static int sis190_init_ring(struct net_device *dev)
813 struct sis190_private *tp = netdev_priv(dev);
815 sis190_init_ring_indexes(tp);
817 memset(tp->Tx_skbuff, 0x0, NUM_TX_DESC * sizeof(struct sk_buff *));
818 memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
820 if (sis190_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
823 sis190_mark_as_last_descriptor(tp->RxDescRing + NUM_RX_DESC - 1);
832 static void sis190_set_rx_mode(struct net_device *dev)
834 struct sis190_private *tp = netdev_priv(dev);
835 void __iomem *ioaddr = tp->mmio_addr;
837 u32 mc_filter[2]; /* Multicast hash filter */
840 if (dev->flags & IFF_PROMISC) {
842 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
844 mc_filter[1] = mc_filter[0] = 0xffffffff;
845 } else if ((netdev_mc_count(dev) > multicast_filter_limit) ||
846 (dev->flags & IFF_ALLMULTI)) {
847 /* Too many to filter perfectly -- accept all multicasts. */
848 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
849 mc_filter[1] = mc_filter[0] = 0xffffffff;
851 struct netdev_hw_addr *ha;
853 rx_mode = AcceptBroadcast | AcceptMyPhys;
854 mc_filter[1] = mc_filter[0] = 0;
855 netdev_for_each_mc_addr(ha, dev) {
857 ether_crc(ETH_ALEN, ha->addr) & 0x3f;
858 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
859 rx_mode |= AcceptMulticast;
863 spin_lock_irqsave(&tp->lock, flags);
865 SIS_W16(RxMacControl, rx_mode | 0x2);
866 SIS_W32(RxHashTable, mc_filter[0]);
867 SIS_W32(RxHashTable + 4, mc_filter[1]);
869 spin_unlock_irqrestore(&tp->lock, flags);
872 static void sis190_soft_reset(void __iomem *ioaddr)
874 SIS_W32(IntrControl, 0x8000);
876 SIS_W32(IntrControl, 0x0);
877 sis190_asic_down(ioaddr);
880 static void sis190_hw_start(struct net_device *dev)
882 struct sis190_private *tp = netdev_priv(dev);
883 void __iomem *ioaddr = tp->mmio_addr;
885 sis190_soft_reset(ioaddr);
887 SIS_W32(TxDescStartAddr, tp->tx_dma);
888 SIS_W32(RxDescStartAddr, tp->rx_dma);
890 SIS_W32(IntrStatus, 0xffffffff);
891 SIS_W32(IntrMask, 0x0);
892 SIS_W32(GMIIControl, 0x0);
893 SIS_W32(TxMacControl, 0x60);
894 SIS_W16(RxMacControl, 0x02);
895 SIS_W32(RxHashTable, 0x0);
897 SIS_W32(RxWolCtrl, 0x0);
898 SIS_W32(RxWolData, 0x0);
902 sis190_set_rx_mode(dev);
904 /* Enable all known interrupts by setting the interrupt mask. */
905 SIS_W32(IntrMask, sis190_intr_mask);
907 SIS_W32(TxControl, 0x1a00 | CmdTxEnb);
908 SIS_W32(RxControl, 0x1a1d);
910 netif_start_queue(dev);
913 static void sis190_phy_task(struct work_struct *work)
915 struct sis190_private *tp =
916 container_of(work, struct sis190_private, phy_task);
917 struct net_device *dev = tp->dev;
918 void __iomem *ioaddr = tp->mmio_addr;
919 int phy_id = tp->mii_if.phy_id;
924 if (!netif_running(dev))
927 val = mdio_read(ioaddr, phy_id, MII_BMCR);
928 if (val & BMCR_RESET) {
929 // FIXME: needlessly high ? -- FR 02/07/2005
930 mod_timer(&tp->timer, jiffies + HZ/10);
934 val = mdio_read_latched(ioaddr, phy_id, MII_BMSR);
935 if (!(val & BMSR_ANEGCOMPLETE) && tp->link_status != LNK_AUTONEG) {
936 netif_carrier_off(dev);
937 netif_warn(tp, link, dev, "auto-negotiating...\n");
938 tp->link_status = LNK_AUTONEG;
939 } else if ((val & BMSR_LSTATUS) && tp->link_status != LNK_ON) {
946 { LPA_1000FULL, 0x07000c00 | 0x00001000,
947 "1000 Mbps Full Duplex" },
948 { LPA_1000HALF, 0x07000c00,
949 "1000 Mbps Half Duplex" },
950 { LPA_100FULL, 0x04000800 | 0x00001000,
951 "100 Mbps Full Duplex" },
952 { LPA_100HALF, 0x04000800,
953 "100 Mbps Half Duplex" },
954 { LPA_10FULL, 0x04000400 | 0x00001000,
955 "10 Mbps Full Duplex" },
956 { LPA_10HALF, 0x04000400,
957 "10 Mbps Half Duplex" },
958 { 0, 0x04000400, "unknown" }
960 u16 adv, autoexp, gigadv, gigrec;
962 val = mdio_read(ioaddr, phy_id, 0x1f);
963 netif_info(tp, link, dev, "mii ext = %04x\n", val);
965 val = mdio_read(ioaddr, phy_id, MII_LPA);
966 adv = mdio_read(ioaddr, phy_id, MII_ADVERTISE);
967 autoexp = mdio_read(ioaddr, phy_id, MII_EXPANSION);
968 netif_info(tp, link, dev, "mii lpa=%04x adv=%04x exp=%04x\n",
971 if (val & LPA_NPAGE && autoexp & EXPANSION_NWAY) {
972 /* check for gigabit speed */
973 gigadv = mdio_read(ioaddr, phy_id, MII_CTRL1000);
974 gigrec = mdio_read(ioaddr, phy_id, MII_STAT1000);
975 val = (gigadv & (gigrec >> 2));
976 if (val & ADVERTISE_1000FULL)
978 else if (val & ADVERTISE_1000HALF)
984 for (p = reg31; p->val; p++) {
985 if ((val & p->val) == p->val)
990 p->ctl |= SIS_R32(StationControl) & ~0x0f001c00;
992 if ((tp->features & F_HAS_RGMII) &&
993 (tp->features & F_PHY_BCM5461)) {
994 // Set Tx Delay in RGMII mode.
995 mdio_write(ioaddr, phy_id, 0x18, 0xf1c7);
997 mdio_write(ioaddr, phy_id, 0x1c, 0x8c00);
998 p->ctl |= 0x03000000;
1001 SIS_W32(StationControl, p->ctl);
1003 if (tp->features & F_HAS_RGMII) {
1004 SIS_W32(RGDelay, 0x0441);
1005 SIS_W32(RGDelay, 0x0440);
1008 tp->negotiated_lpa = p->val;
1010 netif_info(tp, link, dev, "link on %s mode\n", p->msg);
1011 netif_carrier_on(dev);
1012 tp->link_status = LNK_ON;
1013 } else if (!(val & BMSR_LSTATUS) && tp->link_status != LNK_AUTONEG)
1014 tp->link_status = LNK_OFF;
1015 mod_timer(&tp->timer, jiffies + SIS190_PHY_TIMEOUT);
1021 static void sis190_phy_timer(unsigned long __opaque)
1023 struct net_device *dev = (struct net_device *)__opaque;
1024 struct sis190_private *tp = netdev_priv(dev);
1026 if (likely(netif_running(dev)))
1027 schedule_work(&tp->phy_task);
1030 static inline void sis190_delete_timer(struct net_device *dev)
1032 struct sis190_private *tp = netdev_priv(dev);
1034 del_timer_sync(&tp->timer);
1037 static inline void sis190_request_timer(struct net_device *dev)
1039 struct sis190_private *tp = netdev_priv(dev);
1040 struct timer_list *timer = &tp->timer;
1043 timer->expires = jiffies + SIS190_PHY_TIMEOUT;
1044 timer->data = (unsigned long)dev;
1045 timer->function = sis190_phy_timer;
1049 static void sis190_set_rxbufsize(struct sis190_private *tp,
1050 struct net_device *dev)
1052 unsigned int mtu = dev->mtu;
1054 tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
1055 /* RxDesc->size has a licence to kill the lower bits */
1056 if (tp->rx_buf_sz & 0x07) {
1058 tp->rx_buf_sz &= RX_BUF_MASK;
1062 static int sis190_open(struct net_device *dev)
1064 struct sis190_private *tp = netdev_priv(dev);
1065 struct pci_dev *pdev = tp->pci_dev;
1068 sis190_set_rxbufsize(tp, dev);
1071 * Rx and Tx descriptors need 256 bytes alignment.
1072 * pci_alloc_consistent() guarantees a stronger alignment.
1074 tp->TxDescRing = pci_alloc_consistent(pdev, TX_RING_BYTES, &tp->tx_dma);
1075 if (!tp->TxDescRing)
1078 tp->RxDescRing = pci_alloc_consistent(pdev, RX_RING_BYTES, &tp->rx_dma);
1079 if (!tp->RxDescRing)
1082 rc = sis190_init_ring(dev);
1086 sis190_request_timer(dev);
1088 rc = request_irq(pdev->irq, sis190_irq, IRQF_SHARED, dev->name, dev);
1090 goto err_release_timer_2;
1092 sis190_hw_start(dev);
1096 err_release_timer_2:
1097 sis190_delete_timer(dev);
1098 sis190_rx_clear(tp);
1100 pci_free_consistent(pdev, RX_RING_BYTES, tp->RxDescRing, tp->rx_dma);
1102 pci_free_consistent(pdev, TX_RING_BYTES, tp->TxDescRing, tp->tx_dma);
1106 static void sis190_tx_clear(struct sis190_private *tp)
1110 for (i = 0; i < NUM_TX_DESC; i++) {
1111 struct sk_buff *skb = tp->Tx_skbuff[i];
1116 sis190_unmap_tx_skb(tp->pci_dev, skb, tp->TxDescRing + i);
1117 tp->Tx_skbuff[i] = NULL;
1120 tp->dev->stats.tx_dropped++;
1122 tp->cur_tx = tp->dirty_tx = 0;
1125 static void sis190_down(struct net_device *dev)
1127 struct sis190_private *tp = netdev_priv(dev);
1128 void __iomem *ioaddr = tp->mmio_addr;
1129 unsigned int poll_locked = 0;
1131 sis190_delete_timer(dev);
1133 netif_stop_queue(dev);
1136 spin_lock_irq(&tp->lock);
1138 sis190_asic_down(ioaddr);
1140 spin_unlock_irq(&tp->lock);
1142 synchronize_irq(tp->pci_dev->irq);
1147 synchronize_sched();
1149 } while (SIS_R32(IntrMask));
1151 sis190_tx_clear(tp);
1152 sis190_rx_clear(tp);
1155 static int sis190_close(struct net_device *dev)
1157 struct sis190_private *tp = netdev_priv(dev);
1158 struct pci_dev *pdev = tp->pci_dev;
1162 free_irq(pdev->irq, dev);
1164 pci_free_consistent(pdev, TX_RING_BYTES, tp->TxDescRing, tp->tx_dma);
1165 pci_free_consistent(pdev, RX_RING_BYTES, tp->RxDescRing, tp->rx_dma);
1167 tp->TxDescRing = NULL;
1168 tp->RxDescRing = NULL;
1173 static netdev_tx_t sis190_start_xmit(struct sk_buff *skb,
1174 struct net_device *dev)
1176 struct sis190_private *tp = netdev_priv(dev);
1177 void __iomem *ioaddr = tp->mmio_addr;
1178 u32 len, entry, dirty_tx;
1179 struct TxDesc *desc;
1182 if (unlikely(skb->len < ETH_ZLEN)) {
1183 if (skb_padto(skb, ETH_ZLEN)) {
1184 dev->stats.tx_dropped++;
1192 entry = tp->cur_tx % NUM_TX_DESC;
1193 desc = tp->TxDescRing + entry;
1195 if (unlikely(le32_to_cpu(desc->status) & OWNbit)) {
1196 netif_stop_queue(dev);
1197 netif_err(tp, tx_err, dev,
1198 "BUG! Tx Ring full when queue awake!\n");
1199 return NETDEV_TX_BUSY;
1202 mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
1203 if (pci_dma_mapping_error(tp->pci_dev, mapping)) {
1204 netif_err(tp, tx_err, dev,
1205 "PCI mapping failed, dropping packet");
1206 return NETDEV_TX_BUSY;
1209 tp->Tx_skbuff[entry] = skb;
1211 desc->PSize = cpu_to_le32(len);
1212 desc->addr = cpu_to_le32(mapping);
1214 desc->size = cpu_to_le32(len);
1215 if (entry == (NUM_TX_DESC - 1))
1216 desc->size |= cpu_to_le32(RingEnd);
1220 desc->status = cpu_to_le32(OWNbit | INTbit | DEFbit | CRCbit | PADbit);
1221 if (tp->negotiated_lpa & (LPA_1000HALF | LPA_100HALF | LPA_10HALF)) {
1223 desc->status |= cpu_to_le32(COLEN | CRSEN | BKFEN);
1224 if (tp->negotiated_lpa & (LPA_1000HALF | LPA_1000FULL))
1225 desc->status |= cpu_to_le32(EXTEN | BSTEN); /* gigabit HD */
1232 SIS_W32(TxControl, 0x1a00 | CmdReset | CmdTxEnb);
1234 dirty_tx = tp->dirty_tx;
1235 if ((tp->cur_tx - NUM_TX_DESC) == dirty_tx) {
1236 netif_stop_queue(dev);
1238 if (dirty_tx != tp->dirty_tx)
1239 netif_wake_queue(dev);
1242 return NETDEV_TX_OK;
1245 static void sis190_free_phy(struct list_head *first_phy)
1247 struct sis190_phy *cur, *next;
1249 list_for_each_entry_safe(cur, next, first_phy, list) {
1255 * sis190_default_phy - Select default PHY for sis190 mac.
1256 * @dev: the net device to probe for
1258 * Select first detected PHY with link as default.
1259 * If no one is link on, select PHY whose types is HOME as default.
1260 * If HOME doesn't exist, select LAN.
1262 static u16 sis190_default_phy(struct net_device *dev)
1264 struct sis190_phy *phy, *phy_home, *phy_default, *phy_lan;
1265 struct sis190_private *tp = netdev_priv(dev);
1266 struct mii_if_info *mii_if = &tp->mii_if;
1267 void __iomem *ioaddr = tp->mmio_addr;
1270 phy_home = phy_default = phy_lan = NULL;
1272 list_for_each_entry(phy, &tp->first_phy, list) {
1273 status = mdio_read_latched(ioaddr, phy->phy_id, MII_BMSR);
1275 // Link ON & Not select default PHY & not ghost PHY.
1276 if ((status & BMSR_LSTATUS) &&
1278 (phy->type != UNKNOWN)) {
1281 status = mdio_read(ioaddr, phy->phy_id, MII_BMCR);
1282 mdio_write(ioaddr, phy->phy_id, MII_BMCR,
1283 status | BMCR_ANENABLE | BMCR_ISOLATE);
1284 if (phy->type == HOME)
1286 else if (phy->type == LAN)
1293 phy_default = phy_home;
1295 phy_default = phy_lan;
1297 phy_default = list_first_entry(&tp->first_phy,
1298 struct sis190_phy, list);
1301 if (mii_if->phy_id != phy_default->phy_id) {
1302 mii_if->phy_id = phy_default->phy_id;
1303 if (netif_msg_probe(tp))
1304 pr_info("%s: Using transceiver at address %d as default\n",
1305 pci_name(tp->pci_dev), mii_if->phy_id);
1308 status = mdio_read(ioaddr, mii_if->phy_id, MII_BMCR);
1309 status &= (~BMCR_ISOLATE);
1311 mdio_write(ioaddr, mii_if->phy_id, MII_BMCR, status);
1312 status = mdio_read_latched(ioaddr, mii_if->phy_id, MII_BMSR);
1317 static void sis190_init_phy(struct net_device *dev, struct sis190_private *tp,
1318 struct sis190_phy *phy, unsigned int phy_id,
1321 void __iomem *ioaddr = tp->mmio_addr;
1322 struct mii_chip_info *p;
1324 INIT_LIST_HEAD(&phy->list);
1325 phy->status = mii_status;
1326 phy->phy_id = phy_id;
1328 phy->id[0] = mdio_read(ioaddr, phy_id, MII_PHYSID1);
1329 phy->id[1] = mdio_read(ioaddr, phy_id, MII_PHYSID2);
1331 for (p = mii_chip_table; p->type; p++) {
1332 if ((p->id[0] == phy->id[0]) &&
1333 (p->id[1] == (phy->id[1] & 0xfff0))) {
1339 phy->type = (p->type == MIX) ?
1340 ((mii_status & (BMSR_100FULL | BMSR_100HALF)) ?
1341 LAN : HOME) : p->type;
1342 tp->features |= p->feature;
1343 if (netif_msg_probe(tp))
1344 pr_info("%s: %s transceiver at address %d\n",
1345 pci_name(tp->pci_dev), p->name, phy_id);
1347 phy->type = UNKNOWN;
1348 if (netif_msg_probe(tp))
1349 pr_info("%s: unknown PHY 0x%x:0x%x transceiver at address %d\n",
1350 pci_name(tp->pci_dev),
1351 phy->id[0], (phy->id[1] & 0xfff0), phy_id);
1355 static void sis190_mii_probe_88e1111_fixup(struct sis190_private *tp)
1357 if (tp->features & F_PHY_88E1111) {
1358 void __iomem *ioaddr = tp->mmio_addr;
1359 int phy_id = tp->mii_if.phy_id;
1365 p = (tp->features & F_HAS_RGMII) ? reg[0] : reg[1];
1367 mdio_write(ioaddr, phy_id, 0x1b, p[0]);
1369 mdio_write(ioaddr, phy_id, 0x14, p[1]);
1375 * sis190_mii_probe - Probe MII PHY for sis190
1376 * @dev: the net device to probe for
1378 * Search for total of 32 possible mii phy addresses.
1379 * Identify and set current phy if found one,
1380 * return error if it failed to found.
1382 static int sis190_mii_probe(struct net_device *dev)
1384 struct sis190_private *tp = netdev_priv(dev);
1385 struct mii_if_info *mii_if = &tp->mii_if;
1386 void __iomem *ioaddr = tp->mmio_addr;
1390 INIT_LIST_HEAD(&tp->first_phy);
1392 for (phy_id = 0; phy_id < PHY_MAX_ADDR; phy_id++) {
1393 struct sis190_phy *phy;
1396 status = mdio_read_latched(ioaddr, phy_id, MII_BMSR);
1398 // Try next mii if the current one is not accessible.
1399 if (status == 0xffff || status == 0x0000)
1402 phy = kmalloc(sizeof(*phy), GFP_KERNEL);
1404 sis190_free_phy(&tp->first_phy);
1409 sis190_init_phy(dev, tp, phy, phy_id, status);
1411 list_add(&tp->first_phy, &phy->list);
1414 if (list_empty(&tp->first_phy)) {
1415 if (netif_msg_probe(tp))
1416 pr_info("%s: No MII transceivers found!\n",
1417 pci_name(tp->pci_dev));
1422 /* Select default PHY for mac */
1423 sis190_default_phy(dev);
1425 sis190_mii_probe_88e1111_fixup(tp);
1428 mii_if->mdio_read = __mdio_read;
1429 mii_if->mdio_write = __mdio_write;
1430 mii_if->phy_id_mask = PHY_ID_ANY;
1431 mii_if->reg_num_mask = MII_REG_ANY;
1436 static void sis190_mii_remove(struct net_device *dev)
1438 struct sis190_private *tp = netdev_priv(dev);
1440 sis190_free_phy(&tp->first_phy);
1443 static void sis190_release_board(struct pci_dev *pdev)
1445 struct net_device *dev = pci_get_drvdata(pdev);
1446 struct sis190_private *tp = netdev_priv(dev);
1448 iounmap(tp->mmio_addr);
1449 pci_release_regions(pdev);
1450 pci_disable_device(pdev);
1454 static struct net_device *sis190_init_board(struct pci_dev *pdev)
1456 struct sis190_private *tp;
1457 struct net_device *dev;
1458 void __iomem *ioaddr;
1461 dev = alloc_etherdev(sizeof(*tp));
1467 SET_NETDEV_DEV(dev, &pdev->dev);
1469 tp = netdev_priv(dev);
1471 tp->msg_enable = netif_msg_init(debug.msg_enable, SIS190_MSG_DEFAULT);
1473 rc = pci_enable_device(pdev);
1475 if (netif_msg_probe(tp))
1476 pr_err("%s: enable failure\n", pci_name(pdev));
1477 goto err_free_dev_1;
1482 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1483 if (netif_msg_probe(tp))
1484 pr_err("%s: region #0 is no MMIO resource\n",
1486 goto err_pci_disable_2;
1488 if (pci_resource_len(pdev, 0) < SIS190_REGS_SIZE) {
1489 if (netif_msg_probe(tp))
1490 pr_err("%s: invalid PCI region size(s)\n",
1492 goto err_pci_disable_2;
1495 rc = pci_request_regions(pdev, DRV_NAME);
1497 if (netif_msg_probe(tp))
1498 pr_err("%s: could not request regions\n",
1500 goto err_pci_disable_2;
1503 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1505 if (netif_msg_probe(tp))
1506 pr_err("%s: DMA configuration failed\n",
1508 goto err_free_res_3;
1511 pci_set_master(pdev);
1513 ioaddr = ioremap(pci_resource_start(pdev, 0), SIS190_REGS_SIZE);
1515 if (netif_msg_probe(tp))
1516 pr_err("%s: cannot remap MMIO, aborting\n",
1519 goto err_free_res_3;
1523 tp->mmio_addr = ioaddr;
1524 tp->link_status = LNK_OFF;
1526 sis190_irq_mask_and_ack(ioaddr);
1528 sis190_soft_reset(ioaddr);
1533 pci_release_regions(pdev);
1535 pci_disable_device(pdev);
1543 static void sis190_tx_timeout(struct net_device *dev)
1545 struct sis190_private *tp = netdev_priv(dev);
1546 void __iomem *ioaddr = tp->mmio_addr;
1549 /* Disable Tx, if not already */
1550 tmp8 = SIS_R8(TxControl);
1551 if (tmp8 & CmdTxEnb)
1552 SIS_W8(TxControl, tmp8 & ~CmdTxEnb);
1554 netif_info(tp, tx_err, dev, "Transmit timeout, status %08x %08x\n",
1555 SIS_R32(TxControl), SIS_R32(TxSts));
1557 /* Disable interrupts by clearing the interrupt mask. */
1558 SIS_W32(IntrMask, 0x0000);
1560 /* Stop a shared interrupt from scavenging while we are. */
1561 spin_lock_irq(&tp->lock);
1562 sis190_tx_clear(tp);
1563 spin_unlock_irq(&tp->lock);
1565 /* ...and finally, reset everything. */
1566 sis190_hw_start(dev);
1568 netif_wake_queue(dev);
1571 static void sis190_set_rgmii(struct sis190_private *tp, u8 reg)
1573 tp->features |= (reg & 0x80) ? F_HAS_RGMII : 0;
1576 static int sis190_get_mac_addr_from_eeprom(struct pci_dev *pdev,
1577 struct net_device *dev)
1579 struct sis190_private *tp = netdev_priv(dev);
1580 void __iomem *ioaddr = tp->mmio_addr;
1584 if (netif_msg_probe(tp))
1585 pr_info("%s: Read MAC address from EEPROM\n", pci_name(pdev));
1587 /* Check to see if there is a sane EEPROM */
1588 sig = (u16) sis190_read_eeprom(ioaddr, EEPROMSignature);
1590 if ((sig == 0xffff) || (sig == 0x0000)) {
1591 if (netif_msg_probe(tp))
1592 pr_info("%s: Error EEPROM read %x\n",
1593 pci_name(pdev), sig);
1597 /* Get MAC address from EEPROM */
1598 for (i = 0; i < ETH_ALEN / 2; i++) {
1599 u16 w = sis190_read_eeprom(ioaddr, EEPROMMACAddr + i);
1601 ((__le16 *)dev->dev_addr)[i] = cpu_to_le16(w);
1604 sis190_set_rgmii(tp, sis190_read_eeprom(ioaddr, EEPROMInfo));
1610 * sis190_get_mac_addr_from_apc - Get MAC address for SiS96x model
1612 * @dev: network device to get address for
1614 * SiS96x model, use APC CMOS RAM to store MAC address.
1615 * APC CMOS RAM is accessed through ISA bridge.
1616 * MAC address is read into @net_dev->dev_addr.
1618 static int sis190_get_mac_addr_from_apc(struct pci_dev *pdev,
1619 struct net_device *dev)
1621 static const u16 ids[] = { 0x0965, 0x0966, 0x0968 };
1622 struct sis190_private *tp = netdev_priv(dev);
1623 struct pci_dev *isa_bridge;
1627 if (netif_msg_probe(tp))
1628 pr_info("%s: Read MAC address from APC\n", pci_name(pdev));
1630 for (i = 0; i < ARRAY_SIZE(ids); i++) {
1631 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, ids[i], NULL);
1637 if (netif_msg_probe(tp))
1638 pr_info("%s: Can not find ISA bridge\n",
1643 /* Enable port 78h & 79h to access APC Registers. */
1644 pci_read_config_byte(isa_bridge, 0x48, &tmp8);
1645 reg = (tmp8 & ~0x02);
1646 pci_write_config_byte(isa_bridge, 0x48, reg);
1648 pci_read_config_byte(isa_bridge, 0x48, ®);
1650 for (i = 0; i < ETH_ALEN; i++) {
1651 outb(0x9 + i, 0x78);
1652 dev->dev_addr[i] = inb(0x79);
1658 sis190_set_rgmii(tp, reg);
1660 /* Restore the value to ISA Bridge */
1661 pci_write_config_byte(isa_bridge, 0x48, tmp8);
1662 pci_dev_put(isa_bridge);
1668 * sis190_init_rxfilter - Initialize the Rx filter
1669 * @dev: network device to initialize
1671 * Set receive filter address to our MAC address
1672 * and enable packet filtering.
1674 static inline void sis190_init_rxfilter(struct net_device *dev)
1676 struct sis190_private *tp = netdev_priv(dev);
1677 void __iomem *ioaddr = tp->mmio_addr;
1681 ctl = SIS_R16(RxMacControl);
1683 * Disable packet filtering before setting filter.
1684 * Note: SiS's driver writes 32 bits but RxMacControl is 16 bits
1685 * only and followed by RxMacAddr (6 bytes). Strange. -- FR
1687 SIS_W16(RxMacControl, ctl & ~0x0f00);
1689 for (i = 0; i < ETH_ALEN; i++)
1690 SIS_W8(RxMacAddr + i, dev->dev_addr[i]);
1692 SIS_W16(RxMacControl, ctl);
1696 static int sis190_get_mac_addr(struct pci_dev *pdev, struct net_device *dev)
1700 rc = sis190_get_mac_addr_from_eeprom(pdev, dev);
1704 pci_read_config_byte(pdev, 0x73, ®);
1706 if (reg & 0x00000001)
1707 rc = sis190_get_mac_addr_from_apc(pdev, dev);
1712 static void sis190_set_speed_auto(struct net_device *dev)
1714 struct sis190_private *tp = netdev_priv(dev);
1715 void __iomem *ioaddr = tp->mmio_addr;
1716 int phy_id = tp->mii_if.phy_id;
1719 netif_info(tp, link, dev, "Enabling Auto-negotiation\n");
1721 val = mdio_read(ioaddr, phy_id, MII_ADVERTISE);
1723 // Enable 10/100 Full/Half Mode, leave MII_ADVERTISE bit4:0
1725 mdio_write(ioaddr, phy_id, MII_ADVERTISE, (val & ADVERTISE_SLCT) |
1726 ADVERTISE_100FULL | ADVERTISE_10FULL |
1727 ADVERTISE_100HALF | ADVERTISE_10HALF);
1729 // Enable 1000 Full Mode.
1730 mdio_write(ioaddr, phy_id, MII_CTRL1000, ADVERTISE_1000FULL);
1732 // Enable auto-negotiation and restart auto-negotiation.
1733 mdio_write(ioaddr, phy_id, MII_BMCR,
1734 BMCR_ANENABLE | BMCR_ANRESTART | BMCR_RESET);
1737 static int sis190_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1739 struct sis190_private *tp = netdev_priv(dev);
1741 return mii_ethtool_gset(&tp->mii_if, cmd);
1744 static int sis190_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1746 struct sis190_private *tp = netdev_priv(dev);
1748 return mii_ethtool_sset(&tp->mii_if, cmd);
1751 static void sis190_get_drvinfo(struct net_device *dev,
1752 struct ethtool_drvinfo *info)
1754 struct sis190_private *tp = netdev_priv(dev);
1756 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
1757 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
1758 strlcpy(info->bus_info, pci_name(tp->pci_dev),
1759 sizeof(info->bus_info));
1762 static int sis190_get_regs_len(struct net_device *dev)
1764 return SIS190_REGS_SIZE;
1767 static void sis190_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1770 struct sis190_private *tp = netdev_priv(dev);
1771 unsigned long flags;
1773 if (regs->len > SIS190_REGS_SIZE)
1774 regs->len = SIS190_REGS_SIZE;
1776 spin_lock_irqsave(&tp->lock, flags);
1777 memcpy_fromio(p, tp->mmio_addr, regs->len);
1778 spin_unlock_irqrestore(&tp->lock, flags);
1781 static int sis190_nway_reset(struct net_device *dev)
1783 struct sis190_private *tp = netdev_priv(dev);
1785 return mii_nway_restart(&tp->mii_if);
1788 static u32 sis190_get_msglevel(struct net_device *dev)
1790 struct sis190_private *tp = netdev_priv(dev);
1792 return tp->msg_enable;
1795 static void sis190_set_msglevel(struct net_device *dev, u32 value)
1797 struct sis190_private *tp = netdev_priv(dev);
1799 tp->msg_enable = value;
1802 static const struct ethtool_ops sis190_ethtool_ops = {
1803 .get_settings = sis190_get_settings,
1804 .set_settings = sis190_set_settings,
1805 .get_drvinfo = sis190_get_drvinfo,
1806 .get_regs_len = sis190_get_regs_len,
1807 .get_regs = sis190_get_regs,
1808 .get_link = ethtool_op_get_link,
1809 .get_msglevel = sis190_get_msglevel,
1810 .set_msglevel = sis190_set_msglevel,
1811 .nway_reset = sis190_nway_reset,
1814 static int sis190_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1816 struct sis190_private *tp = netdev_priv(dev);
1818 return !netif_running(dev) ? -EINVAL :
1819 generic_mii_ioctl(&tp->mii_if, if_mii(ifr), cmd, NULL);
1822 static int sis190_mac_addr(struct net_device *dev, void *p)
1826 rc = eth_mac_addr(dev, p);
1828 sis190_init_rxfilter(dev);
1832 static const struct net_device_ops sis190_netdev_ops = {
1833 .ndo_open = sis190_open,
1834 .ndo_stop = sis190_close,
1835 .ndo_do_ioctl = sis190_ioctl,
1836 .ndo_start_xmit = sis190_start_xmit,
1837 .ndo_tx_timeout = sis190_tx_timeout,
1838 .ndo_set_rx_mode = sis190_set_rx_mode,
1839 .ndo_change_mtu = eth_change_mtu,
1840 .ndo_set_mac_address = sis190_mac_addr,
1841 .ndo_validate_addr = eth_validate_addr,
1842 #ifdef CONFIG_NET_POLL_CONTROLLER
1843 .ndo_poll_controller = sis190_netpoll,
1847 static int sis190_init_one(struct pci_dev *pdev,
1848 const struct pci_device_id *ent)
1850 static int printed_version = 0;
1851 struct sis190_private *tp;
1852 struct net_device *dev;
1853 void __iomem *ioaddr;
1856 if (!printed_version) {
1857 if (netif_msg_drv(&debug))
1858 pr_info(SIS190_DRIVER_NAME " loaded\n");
1859 printed_version = 1;
1862 dev = sis190_init_board(pdev);
1868 pci_set_drvdata(pdev, dev);
1870 tp = netdev_priv(dev);
1871 ioaddr = tp->mmio_addr;
1873 rc = sis190_get_mac_addr(pdev, dev);
1875 goto err_release_board;
1877 sis190_init_rxfilter(dev);
1879 INIT_WORK(&tp->phy_task, sis190_phy_task);
1881 dev->netdev_ops = &sis190_netdev_ops;
1883 SET_ETHTOOL_OPS(dev, &sis190_ethtool_ops);
1884 dev->watchdog_timeo = SIS190_TX_TIMEOUT;
1886 spin_lock_init(&tp->lock);
1888 rc = sis190_mii_probe(dev);
1890 goto err_release_board;
1892 rc = register_netdev(dev);
1894 goto err_remove_mii;
1896 if (netif_msg_probe(tp)) {
1897 netdev_info(dev, "%s: %s at %p (IRQ: %d), %pM\n",
1899 sis_chip_info[ent->driver_data].name,
1900 ioaddr, pdev->irq, dev->dev_addr);
1901 netdev_info(dev, "%s mode.\n",
1902 (tp->features & F_HAS_RGMII) ? "RGMII" : "GMII");
1905 netif_carrier_off(dev);
1907 sis190_set_speed_auto(dev);
1912 sis190_mii_remove(dev);
1914 sis190_release_board(pdev);
1918 static void sis190_remove_one(struct pci_dev *pdev)
1920 struct net_device *dev = pci_get_drvdata(pdev);
1921 struct sis190_private *tp = netdev_priv(dev);
1923 sis190_mii_remove(dev);
1924 cancel_work_sync(&tp->phy_task);
1925 unregister_netdev(dev);
1926 sis190_release_board(pdev);
1927 pci_set_drvdata(pdev, NULL);
1930 static struct pci_driver sis190_pci_driver = {
1932 .id_table = sis190_pci_tbl,
1933 .probe = sis190_init_one,
1934 .remove = sis190_remove_one,
1937 module_pci_driver(sis190_pci_driver);