2 * New driver for Marvell Yukon chipset and SysKonnect Gigabit
3 * Ethernet adapters. Based on earlier sk98lin, e100 and
4 * FreeBSD if_sk drivers.
6 * This driver intentionally does not support all the features
7 * of the original driver such as link fail-over and link management because
8 * those should be done at higher levels.
10 * Copyright (C) 2004, 2005 Stephen Hemminger <shemminger@osdl.org>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #include <linux/config.h>
28 #include <linux/kernel.h>
29 #include <linux/module.h>
30 #include <linux/moduleparam.h>
31 #include <linux/netdevice.h>
32 #include <linux/etherdevice.h>
33 #include <linux/ethtool.h>
34 #include <linux/pci.h>
35 #include <linux/if_vlan.h>
37 #include <linux/delay.h>
38 #include <linux/crc32.h>
39 #include <linux/dma-mapping.h>
44 #define DRV_NAME "skge"
45 #define DRV_VERSION "1.0"
46 #define PFX DRV_NAME " "
48 #define DEFAULT_TX_RING_SIZE 128
49 #define DEFAULT_RX_RING_SIZE 512
50 #define MAX_TX_RING_SIZE 1024
51 #define MAX_RX_RING_SIZE 4096
52 #define RX_COPY_THRESHOLD 128
53 #define RX_BUF_SIZE 1536
54 #define PHY_RETRIES 1000
55 #define ETH_JUMBO_MTU 9000
56 #define TX_WATCHDOG (5 * HZ)
57 #define NAPI_WEIGHT 64
60 MODULE_DESCRIPTION("SysKonnect Gigabit Ethernet driver");
61 MODULE_AUTHOR("Stephen Hemminger <shemminger@osdl.org>");
62 MODULE_LICENSE("GPL");
63 MODULE_VERSION(DRV_VERSION);
65 static const u32 default_msg
66 = NETIF_MSG_DRV| NETIF_MSG_PROBE| NETIF_MSG_LINK
67 | NETIF_MSG_IFUP| NETIF_MSG_IFDOWN;
69 static int debug = -1; /* defaults above */
70 module_param(debug, int, 0);
71 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
73 static const struct pci_device_id skge_id_table[] = {
74 { PCI_DEVICE(PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3C940) },
75 { PCI_DEVICE(PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3C940B) },
76 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_GE) },
77 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_YU) },
78 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, PCI_DEVICE_ID_DLINK_DGE510T), },
79 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4320) },
80 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5005) }, /* Belkin */
81 { PCI_DEVICE(PCI_VENDOR_ID_CNET, PCI_DEVICE_ID_CNET_GIGACARD) },
82 { PCI_DEVICE(PCI_VENDOR_ID_LINKSYS, PCI_DEVICE_ID_LINKSYS_EG1064) },
83 { PCI_VENDOR_ID_LINKSYS, 0x1032, PCI_ANY_ID, 0x0015, },
86 MODULE_DEVICE_TABLE(pci, skge_id_table);
88 static int skge_up(struct net_device *dev);
89 static int skge_down(struct net_device *dev);
90 static void skge_tx_clean(struct skge_port *skge);
91 static void xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val);
92 static void gm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val);
93 static void genesis_get_stats(struct skge_port *skge, u64 *data);
94 static void yukon_get_stats(struct skge_port *skge, u64 *data);
95 static void yukon_init(struct skge_hw *hw, int port);
96 static void yukon_reset(struct skge_hw *hw, int port);
97 static void genesis_mac_init(struct skge_hw *hw, int port);
98 static void genesis_reset(struct skge_hw *hw, int port);
99 static void genesis_link_up(struct skge_port *skge);
101 /* Avoid conditionals by using array */
102 static const int txqaddr[] = { Q_XA1, Q_XA2 };
103 static const int rxqaddr[] = { Q_R1, Q_R2 };
104 static const u32 rxirqmask[] = { IS_R1_F, IS_R2_F };
105 static const u32 txirqmask[] = { IS_XA1_F, IS_XA2_F };
106 static const u32 portirqmask[] = { IS_PORT_1, IS_PORT_2 };
108 static int skge_get_regs_len(struct net_device *dev)
114 * Returns copy of whole control register region
115 * Note: skip RAM address register because accessing it will
118 static void skge_get_regs(struct net_device *dev, struct ethtool_regs *regs,
121 const struct skge_port *skge = netdev_priv(dev);
122 const void __iomem *io = skge->hw->regs;
125 memset(p, 0, regs->len);
126 memcpy_fromio(p, io, B3_RAM_ADDR);
128 memcpy_fromio(p + B3_RI_WTO_R1, io + B3_RI_WTO_R1,
129 regs->len - B3_RI_WTO_R1);
132 /* Wake on Lan only supported on Yukon chps with rev 1 or above */
133 static int wol_supported(const struct skge_hw *hw)
135 return !((hw->chip_id == CHIP_ID_GENESIS ||
136 (hw->chip_id == CHIP_ID_YUKON && hw->chip_rev == 0)));
139 static void skge_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
141 struct skge_port *skge = netdev_priv(dev);
143 wol->supported = wol_supported(skge->hw) ? WAKE_MAGIC : 0;
144 wol->wolopts = skge->wol ? WAKE_MAGIC : 0;
147 static int skge_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
149 struct skge_port *skge = netdev_priv(dev);
150 struct skge_hw *hw = skge->hw;
152 if (wol->wolopts != WAKE_MAGIC && wol->wolopts != 0)
155 if (wol->wolopts == WAKE_MAGIC && !wol_supported(hw))
158 skge->wol = wol->wolopts == WAKE_MAGIC;
161 memcpy_toio(hw->regs + WOL_MAC_ADDR, dev->dev_addr, ETH_ALEN);
163 skge_write16(hw, WOL_CTRL_STAT,
164 WOL_CTL_ENA_PME_ON_MAGIC_PKT |
165 WOL_CTL_ENA_MAGIC_PKT_UNIT);
167 skge_write16(hw, WOL_CTRL_STAT, WOL_CTL_DEFAULT);
172 /* Determine supported/adverised modes based on hardware.
173 * Note: ethtoool ADVERTISED_xxx == SUPPORTED_xxx
175 static u32 skge_supported_modes(const struct skge_hw *hw)
180 supported = SUPPORTED_10baseT_Half
181 | SUPPORTED_10baseT_Full
182 | SUPPORTED_100baseT_Half
183 | SUPPORTED_100baseT_Full
184 | SUPPORTED_1000baseT_Half
185 | SUPPORTED_1000baseT_Full
186 | SUPPORTED_Autoneg| SUPPORTED_TP;
188 if (hw->chip_id == CHIP_ID_GENESIS)
189 supported &= ~(SUPPORTED_10baseT_Half
190 | SUPPORTED_10baseT_Full
191 | SUPPORTED_100baseT_Half
192 | SUPPORTED_100baseT_Full);
194 else if (hw->chip_id == CHIP_ID_YUKON)
195 supported &= ~SUPPORTED_1000baseT_Half;
197 supported = SUPPORTED_1000baseT_Full | SUPPORTED_FIBRE
203 static int skge_get_settings(struct net_device *dev,
204 struct ethtool_cmd *ecmd)
206 struct skge_port *skge = netdev_priv(dev);
207 struct skge_hw *hw = skge->hw;
209 ecmd->transceiver = XCVR_INTERNAL;
210 ecmd->supported = skge_supported_modes(hw);
213 ecmd->port = PORT_TP;
214 ecmd->phy_address = hw->phy_addr;
216 ecmd->port = PORT_FIBRE;
218 ecmd->advertising = skge->advertising;
219 ecmd->autoneg = skge->autoneg;
220 ecmd->speed = skge->speed;
221 ecmd->duplex = skge->duplex;
225 static int skge_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
227 struct skge_port *skge = netdev_priv(dev);
228 const struct skge_hw *hw = skge->hw;
229 u32 supported = skge_supported_modes(hw);
231 if (ecmd->autoneg == AUTONEG_ENABLE) {
232 ecmd->advertising = supported;
238 switch (ecmd->speed) {
240 if (ecmd->duplex == DUPLEX_FULL)
241 setting = SUPPORTED_1000baseT_Full;
242 else if (ecmd->duplex == DUPLEX_HALF)
243 setting = SUPPORTED_1000baseT_Half;
248 if (ecmd->duplex == DUPLEX_FULL)
249 setting = SUPPORTED_100baseT_Full;
250 else if (ecmd->duplex == DUPLEX_HALF)
251 setting = SUPPORTED_100baseT_Half;
257 if (ecmd->duplex == DUPLEX_FULL)
258 setting = SUPPORTED_10baseT_Full;
259 else if (ecmd->duplex == DUPLEX_HALF)
260 setting = SUPPORTED_10baseT_Half;
268 if ((setting & supported) == 0)
271 skge->speed = ecmd->speed;
272 skge->duplex = ecmd->duplex;
275 skge->autoneg = ecmd->autoneg;
276 skge->advertising = ecmd->advertising;
278 if (netif_running(dev)) {
285 static void skge_get_drvinfo(struct net_device *dev,
286 struct ethtool_drvinfo *info)
288 struct skge_port *skge = netdev_priv(dev);
290 strcpy(info->driver, DRV_NAME);
291 strcpy(info->version, DRV_VERSION);
292 strcpy(info->fw_version, "N/A");
293 strcpy(info->bus_info, pci_name(skge->hw->pdev));
296 static const struct skge_stat {
297 char name[ETH_GSTRING_LEN];
301 { "tx_bytes", XM_TXO_OK_HI, GM_TXO_OK_HI },
302 { "rx_bytes", XM_RXO_OK_HI, GM_RXO_OK_HI },
304 { "tx_broadcast", XM_TXF_BC_OK, GM_TXF_BC_OK },
305 { "rx_broadcast", XM_RXF_BC_OK, GM_RXF_BC_OK },
306 { "tx_multicast", XM_TXF_MC_OK, GM_TXF_MC_OK },
307 { "rx_multicast", XM_RXF_MC_OK, GM_RXF_MC_OK },
308 { "tx_unicast", XM_TXF_UC_OK, GM_TXF_UC_OK },
309 { "rx_unicast", XM_RXF_UC_OK, GM_RXF_UC_OK },
310 { "tx_mac_pause", XM_TXF_MPAUSE, GM_TXF_MPAUSE },
311 { "rx_mac_pause", XM_RXF_MPAUSE, GM_RXF_MPAUSE },
313 { "collisions", XM_TXF_SNG_COL, GM_TXF_SNG_COL },
314 { "multi_collisions", XM_TXF_MUL_COL, GM_TXF_MUL_COL },
315 { "aborted", XM_TXF_ABO_COL, GM_TXF_ABO_COL },
316 { "late_collision", XM_TXF_LAT_COL, GM_TXF_LAT_COL },
317 { "fifo_underrun", XM_TXE_FIFO_UR, GM_TXE_FIFO_UR },
318 { "fifo_overflow", XM_RXE_FIFO_OV, GM_RXE_FIFO_OV },
320 { "rx_toolong", XM_RXF_LNG_ERR, GM_RXF_LNG_ERR },
321 { "rx_jabber", XM_RXF_JAB_PKT, GM_RXF_JAB_PKT },
322 { "rx_runt", XM_RXE_RUNT, GM_RXE_FRAG },
323 { "rx_too_long", XM_RXF_LNG_ERR, GM_RXF_LNG_ERR },
324 { "rx_fcs_error", XM_RXF_FCS_ERR, GM_RXF_FCS_ERR },
327 static int skge_get_stats_count(struct net_device *dev)
329 return ARRAY_SIZE(skge_stats);
332 static void skge_get_ethtool_stats(struct net_device *dev,
333 struct ethtool_stats *stats, u64 *data)
335 struct skge_port *skge = netdev_priv(dev);
337 if (skge->hw->chip_id == CHIP_ID_GENESIS)
338 genesis_get_stats(skge, data);
340 yukon_get_stats(skge, data);
343 /* Use hardware MIB variables for critical path statistics and
344 * transmit feedback not reported at interrupt.
345 * Other errors are accounted for in interrupt handler.
347 static struct net_device_stats *skge_get_stats(struct net_device *dev)
349 struct skge_port *skge = netdev_priv(dev);
350 u64 data[ARRAY_SIZE(skge_stats)];
352 if (skge->hw->chip_id == CHIP_ID_GENESIS)
353 genesis_get_stats(skge, data);
355 yukon_get_stats(skge, data);
357 skge->net_stats.tx_bytes = data[0];
358 skge->net_stats.rx_bytes = data[1];
359 skge->net_stats.tx_packets = data[2] + data[4] + data[6];
360 skge->net_stats.rx_packets = data[3] + data[5] + data[7];
361 skge->net_stats.multicast = data[5] + data[7];
362 skge->net_stats.collisions = data[10];
363 skge->net_stats.tx_aborted_errors = data[12];
365 return &skge->net_stats;
368 static void skge_get_strings(struct net_device *dev, u32 stringset, u8 *data)
374 for (i = 0; i < ARRAY_SIZE(skge_stats); i++)
375 memcpy(data + i * ETH_GSTRING_LEN,
376 skge_stats[i].name, ETH_GSTRING_LEN);
381 static void skge_get_ring_param(struct net_device *dev,
382 struct ethtool_ringparam *p)
384 struct skge_port *skge = netdev_priv(dev);
386 p->rx_max_pending = MAX_RX_RING_SIZE;
387 p->tx_max_pending = MAX_TX_RING_SIZE;
388 p->rx_mini_max_pending = 0;
389 p->rx_jumbo_max_pending = 0;
391 p->rx_pending = skge->rx_ring.count;
392 p->tx_pending = skge->tx_ring.count;
393 p->rx_mini_pending = 0;
394 p->rx_jumbo_pending = 0;
397 static int skge_set_ring_param(struct net_device *dev,
398 struct ethtool_ringparam *p)
400 struct skge_port *skge = netdev_priv(dev);
402 if (p->rx_pending == 0 || p->rx_pending > MAX_RX_RING_SIZE ||
403 p->tx_pending == 0 || p->tx_pending > MAX_TX_RING_SIZE)
406 skge->rx_ring.count = p->rx_pending;
407 skge->tx_ring.count = p->tx_pending;
409 if (netif_running(dev)) {
417 static u32 skge_get_msglevel(struct net_device *netdev)
419 struct skge_port *skge = netdev_priv(netdev);
420 return skge->msg_enable;
423 static void skge_set_msglevel(struct net_device *netdev, u32 value)
425 struct skge_port *skge = netdev_priv(netdev);
426 skge->msg_enable = value;
429 static int skge_nway_reset(struct net_device *dev)
431 struct skge_port *skge = netdev_priv(dev);
432 struct skge_hw *hw = skge->hw;
433 int port = skge->port;
435 if (skge->autoneg != AUTONEG_ENABLE || !netif_running(dev))
438 spin_lock_bh(&hw->phy_lock);
439 if (hw->chip_id == CHIP_ID_GENESIS) {
440 genesis_reset(hw, port);
441 genesis_mac_init(hw, port);
443 yukon_reset(hw, port);
444 yukon_init(hw, port);
446 spin_unlock_bh(&hw->phy_lock);
450 static int skge_set_sg(struct net_device *dev, u32 data)
452 struct skge_port *skge = netdev_priv(dev);
453 struct skge_hw *hw = skge->hw;
455 if (hw->chip_id == CHIP_ID_GENESIS && data)
457 return ethtool_op_set_sg(dev, data);
460 static int skge_set_tx_csum(struct net_device *dev, u32 data)
462 struct skge_port *skge = netdev_priv(dev);
463 struct skge_hw *hw = skge->hw;
465 if (hw->chip_id == CHIP_ID_GENESIS && data)
468 return ethtool_op_set_tx_csum(dev, data);
471 static u32 skge_get_rx_csum(struct net_device *dev)
473 struct skge_port *skge = netdev_priv(dev);
475 return skge->rx_csum;
478 /* Only Yukon supports checksum offload. */
479 static int skge_set_rx_csum(struct net_device *dev, u32 data)
481 struct skge_port *skge = netdev_priv(dev);
483 if (skge->hw->chip_id == CHIP_ID_GENESIS && data)
486 skge->rx_csum = data;
490 static void skge_get_pauseparam(struct net_device *dev,
491 struct ethtool_pauseparam *ecmd)
493 struct skge_port *skge = netdev_priv(dev);
495 ecmd->tx_pause = (skge->flow_control == FLOW_MODE_LOC_SEND)
496 || (skge->flow_control == FLOW_MODE_SYMMETRIC);
497 ecmd->rx_pause = (skge->flow_control == FLOW_MODE_REM_SEND)
498 || (skge->flow_control == FLOW_MODE_SYMMETRIC);
500 ecmd->autoneg = skge->autoneg;
503 static int skge_set_pauseparam(struct net_device *dev,
504 struct ethtool_pauseparam *ecmd)
506 struct skge_port *skge = netdev_priv(dev);
508 skge->autoneg = ecmd->autoneg;
509 if (ecmd->rx_pause && ecmd->tx_pause)
510 skge->flow_control = FLOW_MODE_SYMMETRIC;
511 else if (ecmd->rx_pause && !ecmd->tx_pause)
512 skge->flow_control = FLOW_MODE_REM_SEND;
513 else if (!ecmd->rx_pause && ecmd->tx_pause)
514 skge->flow_control = FLOW_MODE_LOC_SEND;
516 skge->flow_control = FLOW_MODE_NONE;
518 if (netif_running(dev)) {
525 /* Chip internal frequency for clock calculations */
526 static inline u32 hwkhz(const struct skge_hw *hw)
528 if (hw->chip_id == CHIP_ID_GENESIS)
529 return 53215; /* or: 53.125 MHz */
531 return 78215; /* or: 78.125 MHz */
534 /* Chip hz to microseconds */
535 static inline u32 skge_clk2usec(const struct skge_hw *hw, u32 ticks)
537 return (ticks * 1000) / hwkhz(hw);
540 /* Microseconds to chip hz */
541 static inline u32 skge_usecs2clk(const struct skge_hw *hw, u32 usec)
543 return hwkhz(hw) * usec / 1000;
546 static int skge_get_coalesce(struct net_device *dev,
547 struct ethtool_coalesce *ecmd)
549 struct skge_port *skge = netdev_priv(dev);
550 struct skge_hw *hw = skge->hw;
551 int port = skge->port;
553 ecmd->rx_coalesce_usecs = 0;
554 ecmd->tx_coalesce_usecs = 0;
556 if (skge_read32(hw, B2_IRQM_CTRL) & TIM_START) {
557 u32 delay = skge_clk2usec(hw, skge_read32(hw, B2_IRQM_INI));
558 u32 msk = skge_read32(hw, B2_IRQM_MSK);
560 if (msk & rxirqmask[port])
561 ecmd->rx_coalesce_usecs = delay;
562 if (msk & txirqmask[port])
563 ecmd->tx_coalesce_usecs = delay;
569 /* Note: interrupt timer is per board, but can turn on/off per port */
570 static int skge_set_coalesce(struct net_device *dev,
571 struct ethtool_coalesce *ecmd)
573 struct skge_port *skge = netdev_priv(dev);
574 struct skge_hw *hw = skge->hw;
575 int port = skge->port;
576 u32 msk = skge_read32(hw, B2_IRQM_MSK);
579 if (ecmd->rx_coalesce_usecs == 0)
580 msk &= ~rxirqmask[port];
581 else if (ecmd->rx_coalesce_usecs < 25 ||
582 ecmd->rx_coalesce_usecs > 33333)
585 msk |= rxirqmask[port];
586 delay = ecmd->rx_coalesce_usecs;
589 if (ecmd->tx_coalesce_usecs == 0)
590 msk &= ~txirqmask[port];
591 else if (ecmd->tx_coalesce_usecs < 25 ||
592 ecmd->tx_coalesce_usecs > 33333)
595 msk |= txirqmask[port];
596 delay = min(delay, ecmd->rx_coalesce_usecs);
599 skge_write32(hw, B2_IRQM_MSK, msk);
601 skge_write32(hw, B2_IRQM_CTRL, TIM_STOP);
603 skge_write32(hw, B2_IRQM_INI, skge_usecs2clk(hw, delay));
604 skge_write32(hw, B2_IRQM_CTRL, TIM_START);
609 enum led_mode { LED_MODE_OFF, LED_MODE_ON, LED_MODE_TST };
610 static void skge_led(struct skge_port *skge, enum led_mode mode)
612 struct skge_hw *hw = skge->hw;
613 int port = skge->port;
615 spin_lock_bh(&hw->phy_lock);
616 if (hw->chip_id == CHIP_ID_GENESIS) {
619 xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, PHY_B_PEC_LED_OFF);
620 skge_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
621 skge_write32(hw, SK_REG(port, RX_LED_VAL), 0);
622 skge_write8(hw, SK_REG(port, RX_LED_CTRL), LED_T_OFF);
626 skge_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_ON);
627 skge_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_LINKSYNC_ON);
629 skge_write8(hw, SK_REG(port, RX_LED_CTRL), LED_START);
630 skge_write8(hw, SK_REG(port, TX_LED_CTRL), LED_START);
635 skge_write8(hw, SK_REG(port, RX_LED_TST), LED_T_ON);
636 skge_write32(hw, SK_REG(port, RX_LED_VAL), 100);
637 skge_write8(hw, SK_REG(port, RX_LED_CTRL), LED_START);
639 xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, PHY_B_PEC_LED_ON);
645 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
646 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
647 PHY_M_LED_MO_DUP(MO_LED_OFF) |
648 PHY_M_LED_MO_10(MO_LED_OFF) |
649 PHY_M_LED_MO_100(MO_LED_OFF) |
650 PHY_M_LED_MO_1000(MO_LED_OFF) |
651 PHY_M_LED_MO_RX(MO_LED_OFF));
654 gm_phy_write(hw, port, PHY_MARV_LED_CTRL,
655 PHY_M_LED_PULS_DUR(PULS_170MS) |
656 PHY_M_LED_BLINK_RT(BLINK_84MS) |
660 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
661 PHY_M_LED_MO_RX(MO_LED_OFF) |
662 (skge->speed == SPEED_100 ?
663 PHY_M_LED_MO_100(MO_LED_ON) : 0));
666 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
667 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
668 PHY_M_LED_MO_DUP(MO_LED_ON) |
669 PHY_M_LED_MO_10(MO_LED_ON) |
670 PHY_M_LED_MO_100(MO_LED_ON) |
671 PHY_M_LED_MO_1000(MO_LED_ON) |
672 PHY_M_LED_MO_RX(MO_LED_ON));
675 spin_unlock_bh(&hw->phy_lock);
678 /* blink LED's for finding board */
679 static int skge_phys_id(struct net_device *dev, u32 data)
681 struct skge_port *skge = netdev_priv(dev);
683 enum led_mode mode = LED_MODE_TST;
685 if (!data || data > (u32)(MAX_SCHEDULE_TIMEOUT / HZ))
686 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT / HZ) * 1000;
691 skge_led(skge, mode);
692 mode ^= LED_MODE_TST;
694 if (msleep_interruptible(BLINK_MS))
699 /* back to regular LED state */
700 skge_led(skge, netif_running(dev) ? LED_MODE_ON : LED_MODE_OFF);
705 static struct ethtool_ops skge_ethtool_ops = {
706 .get_settings = skge_get_settings,
707 .set_settings = skge_set_settings,
708 .get_drvinfo = skge_get_drvinfo,
709 .get_regs_len = skge_get_regs_len,
710 .get_regs = skge_get_regs,
711 .get_wol = skge_get_wol,
712 .set_wol = skge_set_wol,
713 .get_msglevel = skge_get_msglevel,
714 .set_msglevel = skge_set_msglevel,
715 .nway_reset = skge_nway_reset,
716 .get_link = ethtool_op_get_link,
717 .get_ringparam = skge_get_ring_param,
718 .set_ringparam = skge_set_ring_param,
719 .get_pauseparam = skge_get_pauseparam,
720 .set_pauseparam = skge_set_pauseparam,
721 .get_coalesce = skge_get_coalesce,
722 .set_coalesce = skge_set_coalesce,
723 .get_sg = ethtool_op_get_sg,
724 .set_sg = skge_set_sg,
725 .get_tx_csum = ethtool_op_get_tx_csum,
726 .set_tx_csum = skge_set_tx_csum,
727 .get_rx_csum = skge_get_rx_csum,
728 .set_rx_csum = skge_set_rx_csum,
729 .get_strings = skge_get_strings,
730 .phys_id = skge_phys_id,
731 .get_stats_count = skge_get_stats_count,
732 .get_ethtool_stats = skge_get_ethtool_stats,
736 * Allocate ring elements and chain them together
737 * One-to-one association of board descriptors with ring elements
739 static int skge_ring_alloc(struct skge_ring *ring, void *vaddr, u64 base)
741 struct skge_tx_desc *d;
742 struct skge_element *e;
745 ring->start = kmalloc(sizeof(*e)*ring->count, GFP_KERNEL);
749 for (i = 0, e = ring->start, d = vaddr; i < ring->count; i++, e++, d++) {
752 if (i == ring->count - 1) {
753 e->next = ring->start;
754 d->next_offset = base;
757 d->next_offset = base + (i+1) * sizeof(*d);
760 ring->to_use = ring->to_clean = ring->start;
765 static struct sk_buff *skge_rx_alloc(struct net_device *dev, unsigned int size)
767 struct sk_buff *skb = dev_alloc_skb(size);
771 skb_reserve(skb, NET_IP_ALIGN);
776 /* Allocate and setup a new buffer for receiving */
777 static void skge_rx_setup(struct skge_port *skge, struct skge_element *e,
778 struct sk_buff *skb, unsigned int bufsize)
780 struct skge_rx_desc *rd = e->desc;
783 map = pci_map_single(skge->hw->pdev, skb->data, bufsize,
787 rd->dma_hi = map >> 32;
789 rd->csum1_start = ETH_HLEN;
790 rd->csum2_start = ETH_HLEN;
796 rd->control = BMU_OWN | BMU_STF | BMU_IRQ_EOF | BMU_TCP_CHECK | bufsize;
797 pci_unmap_addr_set(e, mapaddr, map);
798 pci_unmap_len_set(e, maplen, bufsize);
801 /* Resume receiving using existing skb,
802 * Note: DMA address is not changed by chip.
803 * MTU not changed while receiver active.
805 static void skge_rx_reuse(struct skge_element *e, unsigned int size)
807 struct skge_rx_desc *rd = e->desc;
810 rd->csum2_start = ETH_HLEN;
814 rd->control = BMU_OWN | BMU_STF | BMU_IRQ_EOF | BMU_TCP_CHECK | size;
818 /* Free all buffers in receive ring, assumes receiver stopped */
819 static void skge_rx_clean(struct skge_port *skge)
821 struct skge_hw *hw = skge->hw;
822 struct skge_ring *ring = &skge->rx_ring;
823 struct skge_element *e;
827 struct skge_rx_desc *rd = e->desc;
830 pci_unmap_single(hw->pdev,
831 pci_unmap_addr(e, mapaddr),
832 pci_unmap_len(e, maplen),
834 dev_kfree_skb(e->skb);
837 } while ((e = e->next) != ring->start);
841 /* Allocate buffers for receive ring
842 * For receive: to_clean is next received frame.
844 static int skge_rx_fill(struct skge_port *skge)
846 struct skge_ring *ring = &skge->rx_ring;
847 struct skge_element *e;
848 unsigned int bufsize = skge->rx_buf_size;
852 struct sk_buff *skb = skge_rx_alloc(skge->netdev, bufsize);
857 skge_rx_setup(skge, e, skb, bufsize);
858 } while ( (e = e->next) != ring->start);
860 ring->to_clean = ring->start;
864 static void skge_link_up(struct skge_port *skge)
866 skge_write8(skge->hw, SK_REG(skge->port, LNK_LED_REG),
867 LED_BLK_OFF|LED_SYNC_OFF|LED_ON);
869 netif_carrier_on(skge->netdev);
870 if (skge->tx_avail > MAX_SKB_FRAGS + 1)
871 netif_wake_queue(skge->netdev);
873 if (netif_msg_link(skge))
875 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
876 skge->netdev->name, skge->speed,
877 skge->duplex == DUPLEX_FULL ? "full" : "half",
878 (skge->flow_control == FLOW_MODE_NONE) ? "none" :
879 (skge->flow_control == FLOW_MODE_LOC_SEND) ? "tx only" :
880 (skge->flow_control == FLOW_MODE_REM_SEND) ? "rx only" :
881 (skge->flow_control == FLOW_MODE_SYMMETRIC) ? "tx and rx" :
885 static void skge_link_down(struct skge_port *skge)
887 skge_write8(skge->hw, SK_REG(skge->port, LNK_LED_REG), LED_OFF);
888 netif_carrier_off(skge->netdev);
889 netif_stop_queue(skge->netdev);
891 if (netif_msg_link(skge))
892 printk(KERN_INFO PFX "%s: Link is down.\n", skge->netdev->name);
895 static u16 xm_phy_read(struct skge_hw *hw, int port, u16 reg)
900 xm_write16(hw, port, XM_PHY_ADDR, reg | hw->phy_addr);
901 v = xm_read16(hw, port, XM_PHY_DATA);
903 /* Need to wait for external PHY */
904 for (i = 0; i < PHY_RETRIES; i++) {
906 if (xm_read16(hw, port, XM_MMU_CMD)
911 printk(KERN_WARNING PFX "%s: phy read timed out\n",
912 hw->dev[port]->name);
915 v = xm_read16(hw, port, XM_PHY_DATA);
920 static void xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val)
924 xm_write16(hw, port, XM_PHY_ADDR, reg | hw->phy_addr);
925 for (i = 0; i < PHY_RETRIES; i++) {
926 if (!(xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_BUSY))
930 printk(KERN_WARNING PFX "%s: phy write failed to come ready\n",
931 hw->dev[port]->name);
935 xm_write16(hw, port, XM_PHY_DATA, val);
936 for (i = 0; i < PHY_RETRIES; i++) {
938 if (!(xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_BUSY))
941 printk(KERN_WARNING PFX "%s: phy write timed out\n",
942 hw->dev[port]->name);
945 static void genesis_init(struct skge_hw *hw)
947 /* set blink source counter */
948 skge_write32(hw, B2_BSC_INI, (SK_BLK_DUR * SK_FACT_53) / 100);
949 skge_write8(hw, B2_BSC_CTRL, BSC_START);
951 /* configure mac arbiter */
952 skge_write16(hw, B3_MA_TO_CTRL, MA_RST_CLR);
954 /* configure mac arbiter timeout values */
955 skge_write8(hw, B3_MA_TOINI_RX1, SK_MAC_TO_53);
956 skge_write8(hw, B3_MA_TOINI_RX2, SK_MAC_TO_53);
957 skge_write8(hw, B3_MA_TOINI_TX1, SK_MAC_TO_53);
958 skge_write8(hw, B3_MA_TOINI_TX2, SK_MAC_TO_53);
960 skge_write8(hw, B3_MA_RCINI_RX1, 0);
961 skge_write8(hw, B3_MA_RCINI_RX2, 0);
962 skge_write8(hw, B3_MA_RCINI_TX1, 0);
963 skge_write8(hw, B3_MA_RCINI_TX2, 0);
965 /* configure packet arbiter timeout */
966 skge_write16(hw, B3_PA_CTRL, PA_RST_CLR);
967 skge_write16(hw, B3_PA_TOINI_RX1, SK_PKT_TO_MAX);
968 skge_write16(hw, B3_PA_TOINI_TX1, SK_PKT_TO_MAX);
969 skge_write16(hw, B3_PA_TOINI_RX2, SK_PKT_TO_MAX);
970 skge_write16(hw, B3_PA_TOINI_TX2, SK_PKT_TO_MAX);
973 static void genesis_reset(struct skge_hw *hw, int port)
975 const u8 zero[8] = { 0 };
977 skge_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
979 /* reset the statistics module */
980 xm_write32(hw, port, XM_GP_PORT, XM_GP_RES_STAT);
981 xm_write16(hw, port, XM_IMSK, 0xffff); /* disable XMAC IRQs */
982 xm_write32(hw, port, XM_MODE, 0); /* clear Mode Reg */
983 xm_write16(hw, port, XM_TX_CMD, 0); /* reset TX CMD Reg */
984 xm_write16(hw, port, XM_RX_CMD, 0); /* reset RX CMD Reg */
986 /* disable Broadcom PHY IRQ */
987 xm_write16(hw, port, PHY_BCOM_INT_MASK, 0xffff);
989 xm_outhash(hw, port, XM_HSM, zero);
993 /* Convert mode to MII values */
994 static const u16 phy_pause_map[] = {
995 [FLOW_MODE_NONE] = 0,
996 [FLOW_MODE_LOC_SEND] = PHY_AN_PAUSE_ASYM,
997 [FLOW_MODE_SYMMETRIC] = PHY_AN_PAUSE_CAP,
998 [FLOW_MODE_REM_SEND] = PHY_AN_PAUSE_CAP | PHY_AN_PAUSE_ASYM,
1002 /* Check status of Broadcom phy link */
1003 static void bcom_check_link(struct skge_hw *hw, int port)
1005 struct net_device *dev = hw->dev[port];
1006 struct skge_port *skge = netdev_priv(dev);
1009 /* read twice because of latch */
1010 (void) xm_phy_read(hw, port, PHY_BCOM_STAT);
1011 status = xm_phy_read(hw, port, PHY_BCOM_STAT);
1013 if ((status & PHY_ST_LSYNC) == 0) {
1014 u16 cmd = xm_read16(hw, port, XM_MMU_CMD);
1015 cmd &= ~(XM_MMU_ENA_RX | XM_MMU_ENA_TX);
1016 xm_write16(hw, port, XM_MMU_CMD, cmd);
1017 /* dummy read to ensure writing */
1018 (void) xm_read16(hw, port, XM_MMU_CMD);
1020 if (netif_carrier_ok(dev))
1021 skge_link_down(skge);
1023 if (skge->autoneg == AUTONEG_ENABLE &&
1024 (status & PHY_ST_AN_OVER)) {
1025 u16 lpa = xm_phy_read(hw, port, PHY_BCOM_AUNE_LP);
1026 u16 aux = xm_phy_read(hw, port, PHY_BCOM_AUX_STAT);
1028 if (lpa & PHY_B_AN_RF) {
1029 printk(KERN_NOTICE PFX "%s: remote fault\n",
1034 /* Check Duplex mismatch */
1035 switch (aux & PHY_B_AS_AN_RES_MSK) {
1036 case PHY_B_RES_1000FD:
1037 skge->duplex = DUPLEX_FULL;
1039 case PHY_B_RES_1000HD:
1040 skge->duplex = DUPLEX_HALF;
1043 printk(KERN_NOTICE PFX "%s: duplex mismatch\n",
1049 /* We are using IEEE 802.3z/D5.0 Table 37-4 */
1050 switch (aux & PHY_B_AS_PAUSE_MSK) {
1051 case PHY_B_AS_PAUSE_MSK:
1052 skge->flow_control = FLOW_MODE_SYMMETRIC;
1055 skge->flow_control = FLOW_MODE_REM_SEND;
1058 skge->flow_control = FLOW_MODE_LOC_SEND;
1061 skge->flow_control = FLOW_MODE_NONE;
1064 skge->speed = SPEED_1000;
1067 if (!netif_carrier_ok(dev))
1068 genesis_link_up(skge);
1072 /* Broadcom 5400 only supports giagabit! SysKonnect did not put an additional
1073 * Phy on for 100 or 10Mbit operation
1075 static void bcom_phy_init(struct skge_port *skge, int jumbo)
1077 struct skge_hw *hw = skge->hw;
1078 int port = skge->port;
1080 u16 id1, r, ext, ctl;
1082 /* magic workaround patterns for Broadcom */
1083 static const struct {
1087 { 0x18, 0x0c20 }, { 0x17, 0x0012 }, { 0x15, 0x1104 },
1088 { 0x17, 0x0013 }, { 0x15, 0x0404 }, { 0x17, 0x8006 },
1089 { 0x15, 0x0132 }, { 0x17, 0x8006 }, { 0x15, 0x0232 },
1090 { 0x17, 0x800D }, { 0x15, 0x000F }, { 0x18, 0x0420 },
1092 { 0x18, 0x0c20 }, { 0x17, 0x0012 }, { 0x15, 0x1204 },
1093 { 0x17, 0x0013 }, { 0x15, 0x0A04 }, { 0x18, 0x0420 },
1096 /* read Id from external PHY (all have the same address) */
1097 id1 = xm_phy_read(hw, port, PHY_XMAC_ID1);
1099 /* Optimize MDIO transfer by suppressing preamble. */
1100 r = xm_read16(hw, port, XM_MMU_CMD);
1102 xm_write16(hw, port, XM_MMU_CMD,r);
1105 case PHY_BCOM_ID1_C0:
1107 * Workaround BCOM Errata for the C0 type.
1108 * Write magic patterns to reserved registers.
1110 for (i = 0; i < ARRAY_SIZE(C0hack); i++)
1111 xm_phy_write(hw, port,
1112 C0hack[i].reg, C0hack[i].val);
1115 case PHY_BCOM_ID1_A1:
1117 * Workaround BCOM Errata for the A1 type.
1118 * Write magic patterns to reserved registers.
1120 for (i = 0; i < ARRAY_SIZE(A1hack); i++)
1121 xm_phy_write(hw, port,
1122 A1hack[i].reg, A1hack[i].val);
1127 * Workaround BCOM Errata (#10523) for all BCom PHYs.
1128 * Disable Power Management after reset.
1130 r = xm_phy_read(hw, port, PHY_BCOM_AUX_CTRL);
1131 r |= PHY_B_AC_DIS_PM;
1132 xm_phy_write(hw, port, PHY_BCOM_AUX_CTRL, r);
1135 xm_read16(hw, port, XM_ISRC);
1137 ext = PHY_B_PEC_EN_LTR; /* enable tx led */
1138 ctl = PHY_CT_SP1000; /* always 1000mbit */
1140 if (skge->autoneg == AUTONEG_ENABLE) {
1142 * Workaround BCOM Errata #1 for the C5 type.
1143 * 1000Base-T Link Acquisition Failure in Slave Mode
1144 * Set Repeater/DTE bit 10 of the 1000Base-T Control Register
1146 u16 adv = PHY_B_1000C_RD;
1147 if (skge->advertising & ADVERTISED_1000baseT_Half)
1148 adv |= PHY_B_1000C_AHD;
1149 if (skge->advertising & ADVERTISED_1000baseT_Full)
1150 adv |= PHY_B_1000C_AFD;
1151 xm_phy_write(hw, port, PHY_BCOM_1000T_CTRL, adv);
1153 ctl |= PHY_CT_ANE | PHY_CT_RE_CFG;
1155 if (skge->duplex == DUPLEX_FULL)
1156 ctl |= PHY_CT_DUP_MD;
1157 /* Force to slave */
1158 xm_phy_write(hw, port, PHY_BCOM_1000T_CTRL, PHY_B_1000C_MSE);
1161 /* Set autonegotiation pause parameters */
1162 xm_phy_write(hw, port, PHY_BCOM_AUNE_ADV,
1163 phy_pause_map[skge->flow_control] | PHY_AN_CSMA);
1165 /* Handle Jumbo frames */
1167 xm_phy_write(hw, port, PHY_BCOM_AUX_CTRL,
1168 PHY_B_AC_TX_TST | PHY_B_AC_LONG_PACK);
1170 ext |= PHY_B_PEC_HIGH_LA;
1174 xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, ext);
1175 xm_phy_write(hw, port, PHY_BCOM_CTRL, ctl);
1177 /* Use link status change interrrupt */
1178 xm_phy_write(hw, port, PHY_BCOM_INT_MASK, PHY_B_DEF_MSK);
1180 bcom_check_link(hw, port);
1183 static void genesis_mac_init(struct skge_hw *hw, int port)
1185 struct net_device *dev = hw->dev[port];
1186 struct skge_port *skge = netdev_priv(dev);
1187 int jumbo = hw->dev[port]->mtu > ETH_DATA_LEN;
1190 const u8 zero[6] = { 0 };
1192 /* Clear MIB counters */
1193 xm_write16(hw, port, XM_STAT_CMD,
1194 XM_SC_CLR_RXC | XM_SC_CLR_TXC);
1195 /* Clear two times according to Errata #3 */
1196 xm_write16(hw, port, XM_STAT_CMD,
1197 XM_SC_CLR_RXC | XM_SC_CLR_TXC);
1199 /* Unreset the XMAC. */
1200 skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_CLR_MAC_RST);
1203 * Perform additional initialization for external PHYs,
1204 * namely for the 1000baseTX cards that use the XMAC's
1207 /* Take external Phy out of reset */
1208 r = skge_read32(hw, B2_GP_IO);
1210 r |= GP_DIR_0|GP_IO_0;
1212 r |= GP_DIR_2|GP_IO_2;
1214 skge_write32(hw, B2_GP_IO, r);
1215 skge_read32(hw, B2_GP_IO);
1217 /* Enable GMII interfac */
1218 xm_write16(hw, port, XM_HW_CFG, XM_HW_GMII_MD);
1220 bcom_phy_init(skge, jumbo);
1222 /* Set Station Address */
1223 xm_outaddr(hw, port, XM_SA, dev->dev_addr);
1225 /* We don't use match addresses so clear */
1226 for (i = 1; i < 16; i++)
1227 xm_outaddr(hw, port, XM_EXM(i), zero);
1229 /* configure Rx High Water Mark (XM_RX_HI_WM) */
1230 xm_write16(hw, port, XM_RX_HI_WM, 1450);
1232 /* We don't need the FCS appended to the packet. */
1233 r = XM_RX_LENERR_OK | XM_RX_STRIP_FCS;
1235 r |= XM_RX_BIG_PK_OK;
1237 if (skge->duplex == DUPLEX_HALF) {
1239 * If in manual half duplex mode the other side might be in
1240 * full duplex mode, so ignore if a carrier extension is not seen
1241 * on frames received
1243 r |= XM_RX_DIS_CEXT;
1245 xm_write16(hw, port, XM_RX_CMD, r);
1248 /* We want short frames padded to 60 bytes. */
1249 xm_write16(hw, port, XM_TX_CMD, XM_TX_AUTO_PAD);
1252 * Bump up the transmit threshold. This helps hold off transmit
1253 * underruns when we're blasting traffic from both ports at once.
1255 xm_write16(hw, port, XM_TX_THR, 512);
1258 * Enable the reception of all error frames. This is is
1259 * a necessary evil due to the design of the XMAC. The
1260 * XMAC's receive FIFO is only 8K in size, however jumbo
1261 * frames can be up to 9000 bytes in length. When bad
1262 * frame filtering is enabled, the XMAC's RX FIFO operates
1263 * in 'store and forward' mode. For this to work, the
1264 * entire frame has to fit into the FIFO, but that means
1265 * that jumbo frames larger than 8192 bytes will be
1266 * truncated. Disabling all bad frame filtering causes
1267 * the RX FIFO to operate in streaming mode, in which
1268 * case the XMAC will start transfering frames out of the
1269 * RX FIFO as soon as the FIFO threshold is reached.
1271 xm_write32(hw, port, XM_MODE, XM_DEF_MODE);
1275 * Initialize the Receive Counter Event Mask (XM_RX_EV_MSK)
1276 * - Enable all bits excepting 'Octets Rx OK Low CntOv'
1277 * and 'Octets Rx OK Hi Cnt Ov'.
1279 xm_write32(hw, port, XM_RX_EV_MSK, XMR_DEF_MSK);
1282 * Initialize the Transmit Counter Event Mask (XM_TX_EV_MSK)
1283 * - Enable all bits excepting 'Octets Tx OK Low CntOv'
1284 * and 'Octets Tx OK Hi Cnt Ov'.
1286 xm_write32(hw, port, XM_TX_EV_MSK, XMT_DEF_MSK);
1288 /* Configure MAC arbiter */
1289 skge_write16(hw, B3_MA_TO_CTRL, MA_RST_CLR);
1291 /* configure timeout values */
1292 skge_write8(hw, B3_MA_TOINI_RX1, 72);
1293 skge_write8(hw, B3_MA_TOINI_RX2, 72);
1294 skge_write8(hw, B3_MA_TOINI_TX1, 72);
1295 skge_write8(hw, B3_MA_TOINI_TX2, 72);
1297 skge_write8(hw, B3_MA_RCINI_RX1, 0);
1298 skge_write8(hw, B3_MA_RCINI_RX2, 0);
1299 skge_write8(hw, B3_MA_RCINI_TX1, 0);
1300 skge_write8(hw, B3_MA_RCINI_TX2, 0);
1302 /* Configure Rx MAC FIFO */
1303 skge_write8(hw, SK_REG(port, RX_MFF_CTRL2), MFF_RST_CLR);
1304 skge_write16(hw, SK_REG(port, RX_MFF_CTRL1), MFF_ENA_TIM_PAT);
1305 skge_write8(hw, SK_REG(port, RX_MFF_CTRL2), MFF_ENA_OP_MD);
1307 /* Configure Tx MAC FIFO */
1308 skge_write8(hw, SK_REG(port, TX_MFF_CTRL2), MFF_RST_CLR);
1309 skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_TX_CTRL_DEF);
1310 skge_write8(hw, SK_REG(port, TX_MFF_CTRL2), MFF_ENA_OP_MD);
1313 /* Enable frame flushing if jumbo frames used */
1314 skge_write16(hw, SK_REG(port,RX_MFF_CTRL1), MFF_ENA_FLUSH);
1316 /* enable timeout timers if normal frames */
1317 skge_write16(hw, B3_PA_CTRL,
1318 (port == 0) ? PA_ENA_TO_TX1 : PA_ENA_TO_TX2);
1322 static void genesis_stop(struct skge_port *skge)
1324 struct skge_hw *hw = skge->hw;
1325 int port = skge->port;
1328 genesis_reset(hw, port);
1330 /* Clear Tx packet arbiter timeout IRQ */
1331 skge_write16(hw, B3_PA_CTRL,
1332 port == 0 ? PA_CLR_TO_TX1 : PA_CLR_TO_TX2);
1335 * If the transfer stucks at the MAC the STOP command will not
1336 * terminate if we don't flush the XMAC's transmit FIFO !
1338 xm_write32(hw, port, XM_MODE,
1339 xm_read32(hw, port, XM_MODE)|XM_MD_FTF);
1343 skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_SET_MAC_RST);
1345 /* For external PHYs there must be special handling */
1346 reg = skge_read32(hw, B2_GP_IO);
1354 skge_write32(hw, B2_GP_IO, reg);
1355 skge_read32(hw, B2_GP_IO);
1357 xm_write16(hw, port, XM_MMU_CMD,
1358 xm_read16(hw, port, XM_MMU_CMD)
1359 & ~(XM_MMU_ENA_RX | XM_MMU_ENA_TX));
1361 xm_read16(hw, port, XM_MMU_CMD);
1365 static void genesis_get_stats(struct skge_port *skge, u64 *data)
1367 struct skge_hw *hw = skge->hw;
1368 int port = skge->port;
1370 unsigned long timeout = jiffies + HZ;
1372 xm_write16(hw, port,
1373 XM_STAT_CMD, XM_SC_SNP_TXC | XM_SC_SNP_RXC);
1375 /* wait for update to complete */
1376 while (xm_read16(hw, port, XM_STAT_CMD)
1377 & (XM_SC_SNP_TXC | XM_SC_SNP_RXC)) {
1378 if (time_after(jiffies, timeout))
1383 /* special case for 64 bit octet counter */
1384 data[0] = (u64) xm_read32(hw, port, XM_TXO_OK_HI) << 32
1385 | xm_read32(hw, port, XM_TXO_OK_LO);
1386 data[1] = (u64) xm_read32(hw, port, XM_RXO_OK_HI) << 32
1387 | xm_read32(hw, port, XM_RXO_OK_LO);
1389 for (i = 2; i < ARRAY_SIZE(skge_stats); i++)
1390 data[i] = xm_read32(hw, port, skge_stats[i].xmac_offset);
1393 static void genesis_mac_intr(struct skge_hw *hw, int port)
1395 struct skge_port *skge = netdev_priv(hw->dev[port]);
1396 u16 status = xm_read16(hw, port, XM_ISRC);
1398 if (netif_msg_intr(skge))
1399 printk(KERN_DEBUG PFX "%s: mac interrupt status 0x%x\n",
1400 skge->netdev->name, status);
1402 if (status & XM_IS_TXF_UR) {
1403 xm_write32(hw, port, XM_MODE, XM_MD_FTF);
1404 ++skge->net_stats.tx_fifo_errors;
1406 if (status & XM_IS_RXF_OV) {
1407 xm_write32(hw, port, XM_MODE, XM_MD_FRF);
1408 ++skge->net_stats.rx_fifo_errors;
1412 static void gm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val)
1416 gma_write16(hw, port, GM_SMI_DATA, val);
1417 gma_write16(hw, port, GM_SMI_CTRL,
1418 GM_SMI_CT_PHY_AD(hw->phy_addr) | GM_SMI_CT_REG_AD(reg));
1419 for (i = 0; i < PHY_RETRIES; i++) {
1422 if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
1427 static u16 gm_phy_read(struct skge_hw *hw, int port, u16 reg)
1431 gma_write16(hw, port, GM_SMI_CTRL,
1432 GM_SMI_CT_PHY_AD(hw->phy_addr)
1433 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
1435 for (i = 0; i < PHY_RETRIES; i++) {
1437 if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL)
1441 printk(KERN_WARNING PFX "%s: phy read timeout\n",
1442 hw->dev[port]->name);
1445 return gma_read16(hw, port, GM_SMI_DATA);
1448 static void genesis_link_up(struct skge_port *skge)
1450 struct skge_hw *hw = skge->hw;
1451 int port = skge->port;
1455 cmd = xm_read16(hw, port, XM_MMU_CMD);
1458 * enabling pause frame reception is required for 1000BT
1459 * because the XMAC is not reset if the link is going down
1461 if (skge->flow_control == FLOW_MODE_NONE ||
1462 skge->flow_control == FLOW_MODE_LOC_SEND)
1463 /* Disable Pause Frame Reception */
1464 cmd |= XM_MMU_IGN_PF;
1466 /* Enable Pause Frame Reception */
1467 cmd &= ~XM_MMU_IGN_PF;
1469 xm_write16(hw, port, XM_MMU_CMD, cmd);
1471 mode = xm_read32(hw, port, XM_MODE);
1472 if (skge->flow_control == FLOW_MODE_SYMMETRIC ||
1473 skge->flow_control == FLOW_MODE_LOC_SEND) {
1475 * Configure Pause Frame Generation
1476 * Use internal and external Pause Frame Generation.
1477 * Sending pause frames is edge triggered.
1478 * Send a Pause frame with the maximum pause time if
1479 * internal oder external FIFO full condition occurs.
1480 * Send a zero pause time frame to re-start transmission.
1482 /* XM_PAUSE_DA = '010000C28001' (default) */
1483 /* XM_MAC_PTIME = 0xffff (maximum) */
1484 /* remember this value is defined in big endian (!) */
1485 xm_write16(hw, port, XM_MAC_PTIME, 0xffff);
1487 mode |= XM_PAUSE_MODE;
1488 skge_write16(hw, SK_REG(port, RX_MFF_CTRL1), MFF_ENA_PAUSE);
1491 * disable pause frame generation is required for 1000BT
1492 * because the XMAC is not reset if the link is going down
1494 /* Disable Pause Mode in Mode Register */
1495 mode &= ~XM_PAUSE_MODE;
1497 skge_write16(hw, SK_REG(port, RX_MFF_CTRL1), MFF_DIS_PAUSE);
1500 xm_write32(hw, port, XM_MODE, mode);
1503 /* disable GP0 interrupt bit for external Phy */
1504 msk |= XM_IS_INP_ASS;
1506 xm_write16(hw, port, XM_IMSK, msk);
1507 xm_read16(hw, port, XM_ISRC);
1509 /* get MMU Command Reg. */
1510 cmd = xm_read16(hw, port, XM_MMU_CMD);
1511 if (skge->duplex == DUPLEX_FULL)
1512 cmd |= XM_MMU_GMII_FD;
1515 * Workaround BCOM Errata (#10523) for all BCom Phys
1516 * Enable Power Management after link up
1518 xm_phy_write(hw, port, PHY_BCOM_AUX_CTRL,
1519 xm_phy_read(hw, port, PHY_BCOM_AUX_CTRL)
1520 & ~PHY_B_AC_DIS_PM);
1521 xm_phy_write(hw, port, PHY_BCOM_INT_MASK, PHY_B_DEF_MSK);
1524 xm_write16(hw, port, XM_MMU_CMD,
1525 cmd | XM_MMU_ENA_RX | XM_MMU_ENA_TX);
1530 static inline void bcom_phy_intr(struct skge_port *skge)
1532 struct skge_hw *hw = skge->hw;
1533 int port = skge->port;
1536 isrc = xm_phy_read(hw, port, PHY_BCOM_INT_STAT);
1537 if (netif_msg_intr(skge))
1538 printk(KERN_DEBUG PFX "%s: phy interrupt status 0x%x\n",
1539 skge->netdev->name, isrc);
1541 if (isrc & PHY_B_IS_PSE)
1542 printk(KERN_ERR PFX "%s: uncorrectable pair swap error\n",
1543 hw->dev[port]->name);
1545 /* Workaround BCom Errata:
1546 * enable and disable loopback mode if "NO HCD" occurs.
1548 if (isrc & PHY_B_IS_NO_HDCL) {
1549 u16 ctrl = xm_phy_read(hw, port, PHY_BCOM_CTRL);
1550 xm_phy_write(hw, port, PHY_BCOM_CTRL,
1551 ctrl | PHY_CT_LOOP);
1552 xm_phy_write(hw, port, PHY_BCOM_CTRL,
1553 ctrl & ~PHY_CT_LOOP);
1556 if (isrc & (PHY_B_IS_AN_PR | PHY_B_IS_LST_CHANGE))
1557 bcom_check_link(hw, port);
1561 /* Marvell Phy Initailization */
1562 static void yukon_init(struct skge_hw *hw, int port)
1564 struct skge_port *skge = netdev_priv(hw->dev[port]);
1565 u16 ctrl, ct1000, adv;
1567 if (skge->autoneg == AUTONEG_ENABLE) {
1568 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
1570 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
1571 PHY_M_EC_MAC_S_MSK);
1572 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
1574 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
1576 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
1579 ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
1580 if (skge->autoneg == AUTONEG_DISABLE)
1581 ctrl &= ~PHY_CT_ANE;
1583 ctrl |= PHY_CT_RESET;
1584 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
1590 if (skge->autoneg == AUTONEG_ENABLE) {
1592 if (skge->advertising & ADVERTISED_1000baseT_Full)
1593 ct1000 |= PHY_M_1000C_AFD;
1594 if (skge->advertising & ADVERTISED_1000baseT_Half)
1595 ct1000 |= PHY_M_1000C_AHD;
1596 if (skge->advertising & ADVERTISED_100baseT_Full)
1597 adv |= PHY_M_AN_100_FD;
1598 if (skge->advertising & ADVERTISED_100baseT_Half)
1599 adv |= PHY_M_AN_100_HD;
1600 if (skge->advertising & ADVERTISED_10baseT_Full)
1601 adv |= PHY_M_AN_10_FD;
1602 if (skge->advertising & ADVERTISED_10baseT_Half)
1603 adv |= PHY_M_AN_10_HD;
1604 } else /* special defines for FIBER (88E1011S only) */
1605 adv |= PHY_M_AN_1000X_AHD | PHY_M_AN_1000X_AFD;
1607 /* Set Flow-control capabilities */
1608 adv |= phy_pause_map[skge->flow_control];
1610 /* Restart Auto-negotiation */
1611 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
1613 /* forced speed/duplex settings */
1614 ct1000 = PHY_M_1000C_MSE;
1616 if (skge->duplex == DUPLEX_FULL)
1617 ctrl |= PHY_CT_DUP_MD;
1619 switch (skge->speed) {
1621 ctrl |= PHY_CT_SP1000;
1624 ctrl |= PHY_CT_SP100;
1628 ctrl |= PHY_CT_RESET;
1631 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
1633 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
1634 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
1636 /* Enable phy interrupt on autonegotiation complete (or link up) */
1637 if (skge->autoneg == AUTONEG_ENABLE)
1638 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_MSK);
1640 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_DEF_MSK);
1643 static void yukon_reset(struct skge_hw *hw, int port)
1645 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);/* disable PHY IRQs */
1646 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
1647 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
1648 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
1649 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
1651 gma_write16(hw, port, GM_RX_CTRL,
1652 gma_read16(hw, port, GM_RX_CTRL)
1653 | GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
1656 static void yukon_mac_init(struct skge_hw *hw, int port)
1658 struct skge_port *skge = netdev_priv(hw->dev[port]);
1661 const u8 *addr = hw->dev[port]->dev_addr;
1663 /* WA code for COMA mode -- set PHY reset */
1664 if (hw->chip_id == CHIP_ID_YUKON_LITE &&
1665 hw->chip_rev >= CHIP_REV_YU_LITE_A3) {
1666 reg = skge_read32(hw, B2_GP_IO);
1667 reg |= GP_DIR_9 | GP_IO_9;
1668 skge_write32(hw, B2_GP_IO, reg);
1672 skge_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1673 skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1675 /* WA code for COMA mode -- clear PHY reset */
1676 if (hw->chip_id == CHIP_ID_YUKON_LITE &&
1677 hw->chip_rev >= CHIP_REV_YU_LITE_A3) {
1678 reg = skge_read32(hw, B2_GP_IO);
1681 skge_write32(hw, B2_GP_IO, reg);
1684 /* Set hardware config mode */
1685 reg = GPC_INT_POL_HI | GPC_DIS_FC | GPC_DIS_SLEEP |
1686 GPC_ENA_XC | GPC_ANEG_ADV_ALL_M | GPC_ENA_PAUSE;
1687 reg |= hw->copper ? GPC_HWCFG_GMII_COP : GPC_HWCFG_GMII_FIB;
1689 /* Clear GMC reset */
1690 skge_write32(hw, SK_REG(port, GPHY_CTRL), reg | GPC_RST_SET);
1691 skge_write32(hw, SK_REG(port, GPHY_CTRL), reg | GPC_RST_CLR);
1692 skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON | GMC_RST_CLR);
1693 if (skge->autoneg == AUTONEG_DISABLE) {
1694 reg = GM_GPCR_AU_ALL_DIS;
1695 gma_write16(hw, port, GM_GP_CTRL,
1696 gma_read16(hw, port, GM_GP_CTRL) | reg);
1698 switch (skge->speed) {
1700 reg |= GM_GPCR_SPEED_1000;
1703 reg |= GM_GPCR_SPEED_100;
1706 if (skge->duplex == DUPLEX_FULL)
1707 reg |= GM_GPCR_DUP_FULL;
1709 reg = GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100 | GM_GPCR_DUP_FULL;
1710 switch (skge->flow_control) {
1711 case FLOW_MODE_NONE:
1712 skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1713 reg |= GM_GPCR_FC_TX_DIS | GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
1715 case FLOW_MODE_LOC_SEND:
1716 /* disable Rx flow-control */
1717 reg |= GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
1720 gma_write16(hw, port, GM_GP_CTRL, reg);
1721 skge_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
1723 yukon_init(hw, port);
1726 reg = gma_read16(hw, port, GM_PHY_ADDR);
1727 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
1729 for (i = 0; i < GM_MIB_CNT_SIZE; i++)
1730 gma_read16(hw, port, GM_MIB_CNT_BASE + 8*i);
1731 gma_write16(hw, port, GM_PHY_ADDR, reg);
1733 /* transmit control */
1734 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
1736 /* receive control reg: unicast + multicast + no FCS */
1737 gma_write16(hw, port, GM_RX_CTRL,
1738 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
1740 /* transmit flow control */
1741 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
1743 /* transmit parameter */
1744 gma_write16(hw, port, GM_TX_PARAM,
1745 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
1746 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
1747 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF));
1749 /* serial mode register */
1750 reg = GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
1751 if (hw->dev[port]->mtu > 1500)
1752 reg |= GM_SMOD_JUMBO_ENA;
1754 gma_write16(hw, port, GM_SERIAL_MODE, reg);
1756 /* physical address: used for pause frames */
1757 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
1758 /* virtual address for data */
1759 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
1761 /* enable interrupt mask for counter overflows */
1762 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
1763 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
1764 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
1766 /* Initialize Mac Fifo */
1768 /* Configure Rx MAC FIFO */
1769 skge_write16(hw, SK_REG(port, RX_GMF_FL_MSK), RX_FF_FL_DEF_MSK);
1770 reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
1771 if (hw->chip_id == CHIP_ID_YUKON_LITE &&
1772 hw->chip_rev >= CHIP_REV_YU_LITE_A3)
1773 reg &= ~GMF_RX_F_FL_ON;
1774 skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
1775 skge_write16(hw, SK_REG(port, RX_GMF_CTRL_T), reg);
1777 * because Pause Packet Truncation in GMAC is not working
1778 * we have to increase the Flush Threshold to 64 bytes
1779 * in order to flush pause packets in Rx FIFO on Yukon-1
1781 skge_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF+1);
1783 /* Configure Tx MAC FIFO */
1784 skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
1785 skge_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
1788 static void yukon_stop(struct skge_port *skge)
1790 struct skge_hw *hw = skge->hw;
1791 int port = skge->port;
1793 skge_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
1794 yukon_reset(hw, port);
1796 gma_write16(hw, port, GM_GP_CTRL,
1797 gma_read16(hw, port, GM_GP_CTRL)
1798 & ~(GM_GPCR_TX_ENA|GM_GPCR_RX_ENA));
1799 gma_read16(hw, port, GM_GP_CTRL);
1801 if (hw->chip_id == CHIP_ID_YUKON_LITE &&
1802 hw->chip_rev >= CHIP_REV_YU_LITE_A3) {
1803 u32 io = skge_read32(hw, B2_GP_IO);
1805 io |= GP_DIR_9 | GP_IO_9;
1806 skge_write32(hw, B2_GP_IO, io);
1807 skge_read32(hw, B2_GP_IO);
1810 /* set GPHY Control reset */
1811 skge_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1812 skge_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1815 static void yukon_get_stats(struct skge_port *skge, u64 *data)
1817 struct skge_hw *hw = skge->hw;
1818 int port = skge->port;
1821 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
1822 | gma_read32(hw, port, GM_TXO_OK_LO);
1823 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
1824 | gma_read32(hw, port, GM_RXO_OK_LO);
1826 for (i = 2; i < ARRAY_SIZE(skge_stats); i++)
1827 data[i] = gma_read32(hw, port,
1828 skge_stats[i].gma_offset);
1831 static void yukon_mac_intr(struct skge_hw *hw, int port)
1833 struct net_device *dev = hw->dev[port];
1834 struct skge_port *skge = netdev_priv(dev);
1835 u8 status = skge_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
1837 if (netif_msg_intr(skge))
1838 printk(KERN_DEBUG PFX "%s: mac interrupt status 0x%x\n",
1841 if (status & GM_IS_RX_FF_OR) {
1842 ++skge->net_stats.rx_fifo_errors;
1843 skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
1846 if (status & GM_IS_TX_FF_UR) {
1847 ++skge->net_stats.tx_fifo_errors;
1848 skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
1853 static u16 yukon_speed(const struct skge_hw *hw, u16 aux)
1855 switch (aux & PHY_M_PS_SPEED_MSK) {
1856 case PHY_M_PS_SPEED_1000:
1858 case PHY_M_PS_SPEED_100:
1865 static void yukon_link_up(struct skge_port *skge)
1867 struct skge_hw *hw = skge->hw;
1868 int port = skge->port;
1871 /* Enable Transmit FIFO Underrun */
1872 skge_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
1874 reg = gma_read16(hw, port, GM_GP_CTRL);
1875 if (skge->duplex == DUPLEX_FULL || skge->autoneg == AUTONEG_ENABLE)
1876 reg |= GM_GPCR_DUP_FULL;
1879 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1880 gma_write16(hw, port, GM_GP_CTRL, reg);
1882 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_DEF_MSK);
1886 static void yukon_link_down(struct skge_port *skge)
1888 struct skge_hw *hw = skge->hw;
1889 int port = skge->port;
1892 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1894 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1895 ctrl &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1896 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1898 if (skge->flow_control == FLOW_MODE_REM_SEND) {
1899 /* restore Asymmetric Pause bit */
1900 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV,
1901 gm_phy_read(hw, port,
1907 yukon_reset(hw, port);
1908 skge_link_down(skge);
1910 yukon_init(hw, port);
1913 static void yukon_phy_intr(struct skge_port *skge)
1915 struct skge_hw *hw = skge->hw;
1916 int port = skge->port;
1917 const char *reason = NULL;
1918 u16 istatus, phystat;
1920 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
1921 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
1923 if (netif_msg_intr(skge))
1924 printk(KERN_DEBUG PFX "%s: phy interrupt status 0x%x 0x%x\n",
1925 skge->netdev->name, istatus, phystat);
1927 if (istatus & PHY_M_IS_AN_COMPL) {
1928 if (gm_phy_read(hw, port, PHY_MARV_AUNE_LP)
1930 reason = "remote fault";
1934 if (gm_phy_read(hw, port, PHY_MARV_1000T_STAT) & PHY_B_1000S_MSF) {
1935 reason = "master/slave fault";
1939 if (!(phystat & PHY_M_PS_SPDUP_RES)) {
1940 reason = "speed/duplex";
1944 skge->duplex = (phystat & PHY_M_PS_FULL_DUP)
1945 ? DUPLEX_FULL : DUPLEX_HALF;
1946 skge->speed = yukon_speed(hw, phystat);
1948 /* We are using IEEE 802.3z/D5.0 Table 37-4 */
1949 switch (phystat & PHY_M_PS_PAUSE_MSK) {
1950 case PHY_M_PS_PAUSE_MSK:
1951 skge->flow_control = FLOW_MODE_SYMMETRIC;
1953 case PHY_M_PS_RX_P_EN:
1954 skge->flow_control = FLOW_MODE_REM_SEND;
1956 case PHY_M_PS_TX_P_EN:
1957 skge->flow_control = FLOW_MODE_LOC_SEND;
1960 skge->flow_control = FLOW_MODE_NONE;
1963 if (skge->flow_control == FLOW_MODE_NONE ||
1964 (skge->speed < SPEED_1000 && skge->duplex == DUPLEX_HALF))
1965 skge_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1967 skge_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
1968 yukon_link_up(skge);
1972 if (istatus & PHY_M_IS_LSP_CHANGE)
1973 skge->speed = yukon_speed(hw, phystat);
1975 if (istatus & PHY_M_IS_DUP_CHANGE)
1976 skge->duplex = (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1977 if (istatus & PHY_M_IS_LST_CHANGE) {
1978 if (phystat & PHY_M_PS_LINK_UP)
1979 yukon_link_up(skge);
1981 yukon_link_down(skge);
1985 printk(KERN_ERR PFX "%s: autonegotiation failed (%s)\n",
1986 skge->netdev->name, reason);
1988 /* XXX restart autonegotiation? */
1991 static void skge_ramset(struct skge_hw *hw, u16 q, u32 start, size_t len)
1997 end = start + len - 1;
1999 skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
2000 skge_write32(hw, RB_ADDR(q, RB_START), start);
2001 skge_write32(hw, RB_ADDR(q, RB_WP), start);
2002 skge_write32(hw, RB_ADDR(q, RB_RP), start);
2003 skge_write32(hw, RB_ADDR(q, RB_END), end);
2005 if (q == Q_R1 || q == Q_R2) {
2006 /* Set thresholds on receive queue's */
2007 skge_write32(hw, RB_ADDR(q, RB_RX_UTPP),
2009 skge_write32(hw, RB_ADDR(q, RB_RX_LTPP),
2012 /* Enable store & forward on Tx queue's because
2013 * Tx FIFO is only 4K on Genesis and 1K on Yukon
2015 skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
2018 skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
2021 /* Setup Bus Memory Interface */
2022 static void skge_qset(struct skge_port *skge, u16 q,
2023 const struct skge_element *e)
2025 struct skge_hw *hw = skge->hw;
2026 u32 watermark = 0x600;
2027 u64 base = skge->dma + (e->desc - skge->mem);
2029 /* optimization to reduce window on 32bit/33mhz */
2030 if ((skge_read16(hw, B0_CTST) & (CS_BUS_CLOCK | CS_BUS_SLOT_SZ)) == 0)
2033 skge_write32(hw, Q_ADDR(q, Q_CSR), CSR_CLR_RESET);
2034 skge_write32(hw, Q_ADDR(q, Q_F), watermark);
2035 skge_write32(hw, Q_ADDR(q, Q_DA_H), (u32)(base >> 32));
2036 skge_write32(hw, Q_ADDR(q, Q_DA_L), (u32)base);
2039 static int skge_up(struct net_device *dev)
2041 struct skge_port *skge = netdev_priv(dev);
2042 struct skge_hw *hw = skge->hw;
2043 int port = skge->port;
2044 u32 chunk, ram_addr;
2045 size_t rx_size, tx_size;
2048 if (netif_msg_ifup(skge))
2049 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
2051 if (dev->mtu > RX_BUF_SIZE)
2052 skge->rx_buf_size = dev->mtu + ETH_HLEN + NET_IP_ALIGN;
2054 skge->rx_buf_size = RX_BUF_SIZE;
2057 rx_size = skge->rx_ring.count * sizeof(struct skge_rx_desc);
2058 tx_size = skge->tx_ring.count * sizeof(struct skge_tx_desc);
2059 skge->mem_size = tx_size + rx_size;
2060 skge->mem = pci_alloc_consistent(hw->pdev, skge->mem_size, &skge->dma);
2064 memset(skge->mem, 0, skge->mem_size);
2066 if ((err = skge_ring_alloc(&skge->rx_ring, skge->mem, skge->dma)))
2069 err = skge_rx_fill(skge);
2073 if ((err = skge_ring_alloc(&skge->tx_ring, skge->mem + rx_size,
2074 skge->dma + rx_size)))
2077 skge->tx_avail = skge->tx_ring.count - 1;
2079 /* Enable IRQ from port */
2080 hw->intr_mask |= portirqmask[port];
2081 skge_write32(hw, B0_IMSK, hw->intr_mask);
2084 spin_lock_bh(&hw->phy_lock);
2085 if (hw->chip_id == CHIP_ID_GENESIS)
2086 genesis_mac_init(hw, port);
2088 yukon_mac_init(hw, port);
2089 spin_unlock_bh(&hw->phy_lock);
2091 /* Configure RAMbuffers */
2092 chunk = hw->ram_size / ((hw->ports + 1)*2);
2093 ram_addr = hw->ram_offset + 2 * chunk * port;
2095 skge_ramset(hw, rxqaddr[port], ram_addr, chunk);
2096 skge_qset(skge, rxqaddr[port], skge->rx_ring.to_clean);
2098 BUG_ON(skge->tx_ring.to_use != skge->tx_ring.to_clean);
2099 skge_ramset(hw, txqaddr[port], ram_addr+chunk, chunk);
2100 skge_qset(skge, txqaddr[port], skge->tx_ring.to_use);
2102 /* Start receiver BMU */
2104 skge_write8(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_START | CSR_IRQ_CL_F);
2105 skge_led(skge, LED_MODE_ON);
2110 skge_rx_clean(skge);
2111 kfree(skge->rx_ring.start);
2113 pci_free_consistent(hw->pdev, skge->mem_size, skge->mem, skge->dma);
2118 static int skge_down(struct net_device *dev)
2120 struct skge_port *skge = netdev_priv(dev);
2121 struct skge_hw *hw = skge->hw;
2122 int port = skge->port;
2124 if (netif_msg_ifdown(skge))
2125 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
2127 netif_stop_queue(dev);
2129 skge_write8(skge->hw, SK_REG(skge->port, LNK_LED_REG), LED_OFF);
2130 if (hw->chip_id == CHIP_ID_GENESIS)
2135 hw->intr_mask &= ~portirqmask[skge->port];
2136 skge_write32(hw, B0_IMSK, hw->intr_mask);
2138 /* Stop transmitter */
2139 skge_write8(hw, Q_ADDR(txqaddr[port], Q_CSR), CSR_STOP);
2140 skge_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
2141 RB_RST_SET|RB_DIS_OP_MD);
2144 /* Disable Force Sync bit and Enable Alloc bit */
2145 skge_write8(hw, SK_REG(port, TXA_CTRL),
2146 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
2148 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
2149 skge_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
2150 skge_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
2152 /* Reset PCI FIFO */
2153 skge_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), CSR_SET_RESET);
2154 skge_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
2156 /* Reset the RAM Buffer async Tx queue */
2157 skge_write8(hw, RB_ADDR(port == 0 ? Q_XA1 : Q_XA2, RB_CTRL), RB_RST_SET);
2159 skge_write8(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_STOP);
2160 skge_write32(hw, RB_ADDR(port ? Q_R2 : Q_R1, RB_CTRL),
2161 RB_RST_SET|RB_DIS_OP_MD);
2162 skge_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_SET_RESET);
2164 if (hw->chip_id == CHIP_ID_GENESIS) {
2165 skge_write8(hw, SK_REG(port, TX_MFF_CTRL2), MFF_RST_SET);
2166 skge_write8(hw, SK_REG(port, RX_MFF_CTRL2), MFF_RST_SET);
2168 skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
2169 skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
2172 skge_led(skge, LED_MODE_OFF);
2174 skge_tx_clean(skge);
2175 skge_rx_clean(skge);
2177 kfree(skge->rx_ring.start);
2178 kfree(skge->tx_ring.start);
2179 pci_free_consistent(hw->pdev, skge->mem_size, skge->mem, skge->dma);
2183 static int skge_xmit_frame(struct sk_buff *skb, struct net_device *dev)
2185 struct skge_port *skge = netdev_priv(dev);
2186 struct skge_hw *hw = skge->hw;
2187 struct skge_ring *ring = &skge->tx_ring;
2188 struct skge_element *e;
2189 struct skge_tx_desc *td;
2193 unsigned long flags;
2195 skb = skb_padto(skb, ETH_ZLEN);
2197 return NETDEV_TX_OK;
2199 local_irq_save(flags);
2200 if (!spin_trylock(&skge->tx_lock)) {
2201 /* Collision - tell upper layer to requeue */
2202 local_irq_restore(flags);
2203 return NETDEV_TX_LOCKED;
2206 if (unlikely(skge->tx_avail < skb_shinfo(skb)->nr_frags +1)) {
2207 netif_stop_queue(dev);
2208 spin_unlock_irqrestore(&skge->tx_lock, flags);
2210 printk(KERN_WARNING PFX "%s: ring full when queue awake!\n",
2212 return NETDEV_TX_BUSY;
2218 len = skb_headlen(skb);
2219 map = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
2220 pci_unmap_addr_set(e, mapaddr, map);
2221 pci_unmap_len_set(e, maplen, len);
2224 td->dma_hi = map >> 32;
2226 if (skb->ip_summed == CHECKSUM_HW) {
2227 const struct iphdr *ip
2228 = (const struct iphdr *) (skb->data + ETH_HLEN);
2229 int offset = skb->h.raw - skb->data;
2231 /* This seems backwards, but it is what the sk98lin
2232 * does. Looks like hardware is wrong?
2234 if (ip->protocol == IPPROTO_UDP
2235 && hw->chip_rev == 0 && hw->chip_id == CHIP_ID_YUKON)
2236 control = BMU_TCP_CHECK;
2238 control = BMU_UDP_CHECK;
2241 td->csum_start = offset;
2242 td->csum_write = offset + skb->csum;
2244 control = BMU_CHECK;
2246 if (!skb_shinfo(skb)->nr_frags) /* single buffer i.e. no fragments */
2247 control |= BMU_EOF| BMU_IRQ_EOF;
2249 struct skge_tx_desc *tf = td;
2251 control |= BMU_STFWD;
2252 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2253 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2255 map = pci_map_page(hw->pdev, frag->page, frag->page_offset,
2256 frag->size, PCI_DMA_TODEVICE);
2262 tf->dma_hi = (u64) map >> 32;
2263 pci_unmap_addr_set(e, mapaddr, map);
2264 pci_unmap_len_set(e, maplen, frag->size);
2266 tf->control = BMU_OWN | BMU_SW | control | frag->size;
2268 tf->control |= BMU_EOF | BMU_IRQ_EOF;
2270 /* Make sure all the descriptors written */
2272 td->control = BMU_OWN | BMU_SW | BMU_STF | control | len;
2275 skge_write8(hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_START);
2277 if (netif_msg_tx_queued(skge))
2278 printk(KERN_DEBUG "%s: tx queued, slot %td, len %d\n",
2279 dev->name, e - ring->start, skb->len);
2281 ring->to_use = e->next;
2282 skge->tx_avail -= skb_shinfo(skb)->nr_frags + 1;
2283 if (skge->tx_avail <= MAX_SKB_FRAGS + 1) {
2284 pr_debug("%s: transmit queue full\n", dev->name);
2285 netif_stop_queue(dev);
2288 dev->trans_start = jiffies;
2289 spin_unlock_irqrestore(&skge->tx_lock, flags);
2291 return NETDEV_TX_OK;
2294 static inline void skge_tx_free(struct skge_hw *hw, struct skge_element *e)
2296 /* This ring element can be skb or fragment */
2298 pci_unmap_single(hw->pdev,
2299 pci_unmap_addr(e, mapaddr),
2300 pci_unmap_len(e, maplen),
2302 dev_kfree_skb_any(e->skb);
2305 pci_unmap_page(hw->pdev,
2306 pci_unmap_addr(e, mapaddr),
2307 pci_unmap_len(e, maplen),
2312 static void skge_tx_clean(struct skge_port *skge)
2314 struct skge_ring *ring = &skge->tx_ring;
2315 struct skge_element *e;
2316 unsigned long flags;
2318 spin_lock_irqsave(&skge->tx_lock, flags);
2319 for (e = ring->to_clean; e != ring->to_use; e = e->next) {
2321 skge_tx_free(skge->hw, e);
2324 spin_unlock_irqrestore(&skge->tx_lock, flags);
2327 static void skge_tx_timeout(struct net_device *dev)
2329 struct skge_port *skge = netdev_priv(dev);
2331 if (netif_msg_timer(skge))
2332 printk(KERN_DEBUG PFX "%s: tx timeout\n", dev->name);
2334 skge_write8(skge->hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_STOP);
2335 skge_tx_clean(skge);
2338 static int skge_change_mtu(struct net_device *dev, int new_mtu)
2341 int running = netif_running(dev);
2343 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2356 static void genesis_set_multicast(struct net_device *dev)
2358 struct skge_port *skge = netdev_priv(dev);
2359 struct skge_hw *hw = skge->hw;
2360 int port = skge->port;
2361 int i, count = dev->mc_count;
2362 struct dev_mc_list *list = dev->mc_list;
2366 mode = xm_read32(hw, port, XM_MODE);
2367 mode |= XM_MD_ENA_HASH;
2368 if (dev->flags & IFF_PROMISC)
2369 mode |= XM_MD_ENA_PROM;
2371 mode &= ~XM_MD_ENA_PROM;
2373 if (dev->flags & IFF_ALLMULTI)
2374 memset(filter, 0xff, sizeof(filter));
2376 memset(filter, 0, sizeof(filter));
2377 for (i = 0; list && i < count; i++, list = list->next) {
2379 crc = ether_crc_le(ETH_ALEN, list->dmi_addr);
2381 filter[bit/8] |= 1 << (bit%8);
2385 xm_write32(hw, port, XM_MODE, mode);
2386 xm_outhash(hw, port, XM_HSM, filter);
2389 static void yukon_set_multicast(struct net_device *dev)
2391 struct skge_port *skge = netdev_priv(dev);
2392 struct skge_hw *hw = skge->hw;
2393 int port = skge->port;
2394 struct dev_mc_list *list = dev->mc_list;
2398 memset(filter, 0, sizeof(filter));
2400 reg = gma_read16(hw, port, GM_RX_CTRL);
2401 reg |= GM_RXCR_UCF_ENA;
2403 if (dev->flags & IFF_PROMISC) /* promiscious */
2404 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
2405 else if (dev->flags & IFF_ALLMULTI) /* all multicast */
2406 memset(filter, 0xff, sizeof(filter));
2407 else if (dev->mc_count == 0) /* no multicast */
2408 reg &= ~GM_RXCR_MCF_ENA;
2411 reg |= GM_RXCR_MCF_ENA;
2413 for (i = 0; list && i < dev->mc_count; i++, list = list->next) {
2414 u32 bit = ether_crc(ETH_ALEN, list->dmi_addr) & 0x3f;
2415 filter[bit/8] |= 1 << (bit%8);
2420 gma_write16(hw, port, GM_MC_ADDR_H1,
2421 (u16)filter[0] | ((u16)filter[1] << 8));
2422 gma_write16(hw, port, GM_MC_ADDR_H2,
2423 (u16)filter[2] | ((u16)filter[3] << 8));
2424 gma_write16(hw, port, GM_MC_ADDR_H3,
2425 (u16)filter[4] | ((u16)filter[5] << 8));
2426 gma_write16(hw, port, GM_MC_ADDR_H4,
2427 (u16)filter[6] | ((u16)filter[7] << 8));
2429 gma_write16(hw, port, GM_RX_CTRL, reg);
2432 static inline int bad_phy_status(const struct skge_hw *hw, u32 status)
2434 if (hw->chip_id == CHIP_ID_GENESIS)
2435 return (status & (XMR_FS_ERR | XMR_FS_2L_VLAN)) != 0;
2437 return (status & GMR_FS_ANY_ERR) ||
2438 (status & GMR_FS_RX_OK) == 0;
2441 static void skge_rx_error(struct skge_port *skge, int slot,
2442 u32 control, u32 status)
2444 if (netif_msg_rx_err(skge))
2445 printk(KERN_DEBUG PFX "%s: rx err, slot %d control 0x%x status 0x%x\n",
2446 skge->netdev->name, slot, control, status);
2448 if ((control & (BMU_EOF|BMU_STF)) != (BMU_STF|BMU_EOF))
2449 skge->net_stats.rx_length_errors++;
2450 else if (skge->hw->chip_id == CHIP_ID_GENESIS) {
2451 if (status & (XMR_FS_RUNT|XMR_FS_LNG_ERR))
2452 skge->net_stats.rx_length_errors++;
2453 if (status & XMR_FS_FRA_ERR)
2454 skge->net_stats.rx_frame_errors++;
2455 if (status & XMR_FS_FCS_ERR)
2456 skge->net_stats.rx_crc_errors++;
2458 if (status & (GMR_FS_LONG_ERR|GMR_FS_UN_SIZE))
2459 skge->net_stats.rx_length_errors++;
2460 if (status & GMR_FS_FRAGMENT)
2461 skge->net_stats.rx_frame_errors++;
2462 if (status & GMR_FS_CRC_ERR)
2463 skge->net_stats.rx_crc_errors++;
2467 /* Get receive buffer from descriptor.
2468 * Handles copy of small buffers and reallocation failures
2470 static inline struct sk_buff *skge_rx_get(struct skge_port *skge,
2471 struct skge_element *e,
2474 struct sk_buff *nskb, *skb;
2476 if (len < RX_COPY_THRESHOLD) {
2477 nskb = skge_rx_alloc(skge->netdev, len + NET_IP_ALIGN);
2478 if (unlikely(!nskb))
2481 pci_dma_sync_single_for_cpu(skge->hw->pdev,
2482 pci_unmap_addr(e, mapaddr),
2483 len, PCI_DMA_FROMDEVICE);
2484 memcpy(nskb->data, e->skb->data, len);
2485 pci_dma_sync_single_for_device(skge->hw->pdev,
2486 pci_unmap_addr(e, mapaddr),
2487 len, PCI_DMA_FROMDEVICE);
2489 if (skge->rx_csum) {
2490 struct skge_rx_desc *rd = e->desc;
2491 nskb->csum = le16_to_cpu(rd->csum2);
2492 nskb->ip_summed = CHECKSUM_HW;
2494 skge_rx_reuse(e, skge->rx_buf_size);
2497 nskb = skge_rx_alloc(skge->netdev, skge->rx_buf_size);
2498 if (unlikely(!nskb))
2501 pci_unmap_single(skge->hw->pdev,
2502 pci_unmap_addr(e, mapaddr),
2503 pci_unmap_len(e, maplen),
2504 PCI_DMA_FROMDEVICE);
2506 if (skge->rx_csum) {
2507 struct skge_rx_desc *rd = e->desc;
2508 skb->csum = le16_to_cpu(rd->csum2);
2509 skb->ip_summed = CHECKSUM_HW;
2512 skge_rx_setup(skge, e, nskb, skge->rx_buf_size);
2518 static int skge_poll(struct net_device *dev, int *budget)
2520 struct skge_port *skge = netdev_priv(dev);
2521 struct skge_hw *hw = skge->hw;
2522 struct skge_ring *ring = &skge->rx_ring;
2523 struct skge_element *e;
2524 unsigned int to_do = min(dev->quota, *budget);
2525 unsigned int work_done = 0;
2527 for (e = ring->to_clean; work_done < to_do; e = e->next) {
2528 struct skge_rx_desc *rd = e->desc;
2529 struct sk_buff *skb;
2530 u32 control, len, status;
2533 control = rd->control;
2534 if (control & BMU_OWN)
2537 len = control & BMU_BBC;
2538 status = rd->status;
2540 if (unlikely((control & (BMU_EOF|BMU_STF)) != (BMU_STF|BMU_EOF)
2541 || bad_phy_status(hw, status))) {
2542 skge_rx_error(skge, e - ring->start, control, status);
2543 skge_rx_reuse(e, skge->rx_buf_size);
2547 if (netif_msg_rx_status(skge))
2548 printk(KERN_DEBUG PFX "%s: rx slot %td status 0x%x len %d\n",
2549 dev->name, e - ring->start, rd->status, len);
2551 skb = skge_rx_get(skge, e, len);
2554 skb->protocol = eth_type_trans(skb, dev);
2556 dev->last_rx = jiffies;
2557 netif_receive_skb(skb);
2561 skge_rx_reuse(e, skge->rx_buf_size);
2565 /* restart receiver */
2567 skge_write8(hw, Q_ADDR(rxqaddr[skge->port], Q_CSR),
2568 CSR_START | CSR_IRQ_CL_F);
2570 *budget -= work_done;
2571 dev->quota -= work_done;
2573 if (work_done >= to_do)
2574 return 1; /* not done */
2576 local_irq_disable();
2577 __netif_rx_complete(dev);
2578 hw->intr_mask |= portirqmask[skge->port];
2579 skge_write32(hw, B0_IMSK, hw->intr_mask);
2584 static inline void skge_tx_intr(struct net_device *dev)
2586 struct skge_port *skge = netdev_priv(dev);
2587 struct skge_hw *hw = skge->hw;
2588 struct skge_ring *ring = &skge->tx_ring;
2589 struct skge_element *e;
2591 spin_lock(&skge->tx_lock);
2592 for (e = ring->to_clean; e != ring->to_use; e = e->next) {
2593 struct skge_tx_desc *td = e->desc;
2597 control = td->control;
2598 if (control & BMU_OWN)
2601 if (unlikely(netif_msg_tx_done(skge)))
2602 printk(KERN_DEBUG PFX "%s: tx done slot %td status 0x%x\n",
2603 dev->name, e - ring->start, td->status);
2605 skge_tx_free(hw, e);
2610 skge_write8(hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F);
2612 if (skge->tx_avail > MAX_SKB_FRAGS + 1)
2613 netif_wake_queue(dev);
2615 spin_unlock(&skge->tx_lock);
2618 /* Parity errors seem to happen when Genesis is connected to a switch
2619 * with no other ports present. Heartbeat error??
2621 static void skge_mac_parity(struct skge_hw *hw, int port)
2623 struct net_device *dev = hw->dev[port];
2626 struct skge_port *skge = netdev_priv(dev);
2627 ++skge->net_stats.tx_heartbeat_errors;
2630 if (hw->chip_id == CHIP_ID_GENESIS)
2631 skge_write16(hw, SK_REG(port, TX_MFF_CTRL1),
2634 /* HW-Bug #8: cleared by GMF_CLI_TX_FC instead of GMF_CLI_TX_PE */
2635 skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T),
2636 (hw->chip_id == CHIP_ID_YUKON && hw->chip_rev == 0)
2637 ? GMF_CLI_TX_FC : GMF_CLI_TX_PE);
2640 static void skge_pci_clear(struct skge_hw *hw)
2644 pci_read_config_word(hw->pdev, PCI_STATUS, &status);
2645 skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2646 pci_write_config_word(hw->pdev, PCI_STATUS,
2647 status | PCI_STATUS_ERROR_BITS);
2648 skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2651 static void skge_mac_intr(struct skge_hw *hw, int port)
2653 if (hw->chip_id == CHIP_ID_GENESIS)
2654 genesis_mac_intr(hw, port);
2656 yukon_mac_intr(hw, port);
2659 /* Handle device specific framing and timeout interrupts */
2660 static void skge_error_irq(struct skge_hw *hw)
2662 u32 hwstatus = skge_read32(hw, B0_HWE_ISRC);
2664 if (hw->chip_id == CHIP_ID_GENESIS) {
2665 /* clear xmac errors */
2666 if (hwstatus & (IS_NO_STAT_M1|IS_NO_TIST_M1))
2667 skge_write16(hw, RX_MFF_CTRL1, MFF_CLR_INSTAT);
2668 if (hwstatus & (IS_NO_STAT_M2|IS_NO_TIST_M2))
2669 skge_write16(hw, RX_MFF_CTRL2, MFF_CLR_INSTAT);
2671 /* Timestamp (unused) overflow */
2672 if (hwstatus & IS_IRQ_TIST_OV)
2673 skge_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2676 if (hwstatus & IS_RAM_RD_PAR) {
2677 printk(KERN_ERR PFX "Ram read data parity error\n");
2678 skge_write16(hw, B3_RI_CTRL, RI_CLR_RD_PERR);
2681 if (hwstatus & IS_RAM_WR_PAR) {
2682 printk(KERN_ERR PFX "Ram write data parity error\n");
2683 skge_write16(hw, B3_RI_CTRL, RI_CLR_WR_PERR);
2686 if (hwstatus & IS_M1_PAR_ERR)
2687 skge_mac_parity(hw, 0);
2689 if (hwstatus & IS_M2_PAR_ERR)
2690 skge_mac_parity(hw, 1);
2692 if (hwstatus & IS_R1_PAR_ERR)
2693 skge_write32(hw, B0_R1_CSR, CSR_IRQ_CL_P);
2695 if (hwstatus & IS_R2_PAR_ERR)
2696 skge_write32(hw, B0_R2_CSR, CSR_IRQ_CL_P);
2698 if (hwstatus & (IS_IRQ_MST_ERR|IS_IRQ_STAT)) {
2699 printk(KERN_ERR PFX "hardware error detected (status 0x%x)\n",
2704 /* if error still set then just ignore it */
2705 hwstatus = skge_read32(hw, B0_HWE_ISRC);
2706 if (hwstatus & IS_IRQ_STAT) {
2707 pr_debug("IRQ status %x: still set ignoring hardware errors\n",
2709 hw->intr_mask &= ~IS_HW_ERR;
2715 * Interrrupt from PHY are handled in tasklet (soft irq)
2716 * because accessing phy registers requires spin wait which might
2717 * cause excess interrupt latency.
2719 static void skge_extirq(unsigned long data)
2721 struct skge_hw *hw = (struct skge_hw *) data;
2724 spin_lock(&hw->phy_lock);
2725 for (port = 0; port < 2; port++) {
2726 struct net_device *dev = hw->dev[port];
2728 if (dev && netif_running(dev)) {
2729 struct skge_port *skge = netdev_priv(dev);
2731 if (hw->chip_id != CHIP_ID_GENESIS)
2732 yukon_phy_intr(skge);
2734 bcom_phy_intr(skge);
2737 spin_unlock(&hw->phy_lock);
2739 local_irq_disable();
2740 hw->intr_mask |= IS_EXT_REG;
2741 skge_write32(hw, B0_IMSK, hw->intr_mask);
2745 static irqreturn_t skge_intr(int irq, void *dev_id, struct pt_regs *regs)
2747 struct skge_hw *hw = dev_id;
2748 u32 status = skge_read32(hw, B0_SP_ISRC);
2750 if (status == 0 || status == ~0) /* hotplug or shared irq */
2753 status &= hw->intr_mask;
2754 if (status & IS_R1_F) {
2755 hw->intr_mask &= ~IS_R1_F;
2756 netif_rx_schedule(hw->dev[0]);
2759 if (status & IS_R2_F) {
2760 hw->intr_mask &= ~IS_R2_F;
2761 netif_rx_schedule(hw->dev[1]);
2764 if (status & IS_XA1_F)
2765 skge_tx_intr(hw->dev[0]);
2767 if (status & IS_XA2_F)
2768 skge_tx_intr(hw->dev[1]);
2770 if (status & IS_PA_TO_RX1) {
2771 struct skge_port *skge = netdev_priv(hw->dev[0]);
2772 ++skge->net_stats.rx_over_errors;
2773 skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_RX1);
2776 if (status & IS_PA_TO_RX2) {
2777 struct skge_port *skge = netdev_priv(hw->dev[1]);
2778 ++skge->net_stats.rx_over_errors;
2779 skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_RX2);
2782 if (status & IS_PA_TO_TX1)
2783 skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_TX1);
2785 if (status & IS_PA_TO_TX2)
2786 skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_TX2);
2788 if (status & IS_MAC1)
2789 skge_mac_intr(hw, 0);
2791 if (status & IS_MAC2)
2792 skge_mac_intr(hw, 1);
2794 if (status & IS_HW_ERR)
2797 if (status & IS_EXT_REG) {
2798 hw->intr_mask &= ~IS_EXT_REG;
2799 tasklet_schedule(&hw->ext_tasklet);
2802 skge_write32(hw, B0_IMSK, hw->intr_mask);
2807 #ifdef CONFIG_NET_POLL_CONTROLLER
2808 static void skge_netpoll(struct net_device *dev)
2810 struct skge_port *skge = netdev_priv(dev);
2812 disable_irq(dev->irq);
2813 skge_intr(dev->irq, skge->hw, NULL);
2814 enable_irq(dev->irq);
2818 static int skge_set_mac_address(struct net_device *dev, void *p)
2820 struct skge_port *skge = netdev_priv(dev);
2821 struct sockaddr *addr = p;
2824 if (!is_valid_ether_addr(addr->sa_data))
2825 return -EADDRNOTAVAIL;
2828 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
2829 memcpy_toio(skge->hw->regs + B2_MAC_1 + skge->port*8,
2830 dev->dev_addr, ETH_ALEN);
2831 memcpy_toio(skge->hw->regs + B2_MAC_2 + skge->port*8,
2832 dev->dev_addr, ETH_ALEN);
2833 if (dev->flags & IFF_UP)
2838 static const struct {
2842 { CHIP_ID_GENESIS, "Genesis" },
2843 { CHIP_ID_YUKON, "Yukon" },
2844 { CHIP_ID_YUKON_LITE, "Yukon-Lite"},
2845 { CHIP_ID_YUKON_LP, "Yukon-LP"},
2848 static const char *skge_board_name(const struct skge_hw *hw)
2851 static char buf[16];
2853 for (i = 0; i < ARRAY_SIZE(skge_chips); i++)
2854 if (skge_chips[i].id == hw->chip_id)
2855 return skge_chips[i].name;
2857 snprintf(buf, sizeof buf, "chipid 0x%x", hw->chip_id);
2863 * Setup the board data structure, but don't bring up
2866 static int skge_reset(struct skge_hw *hw)
2869 u8 t8, mac_cfg, pmd_type, phy_type;
2872 ctst = skge_read16(hw, B0_CTST);
2875 skge_write8(hw, B0_CTST, CS_RST_SET);
2876 skge_write8(hw, B0_CTST, CS_RST_CLR);
2878 /* clear PCI errors, if any */
2881 skge_write8(hw, B0_CTST, CS_MRST_CLR);
2883 /* restore CLK_RUN bits (for Yukon-Lite) */
2884 skge_write16(hw, B0_CTST,
2885 ctst & (CS_CLK_RUN_HOT|CS_CLK_RUN_RST|CS_CLK_RUN_ENA));
2887 hw->chip_id = skge_read8(hw, B2_CHIP_ID);
2888 phy_type = skge_read8(hw, B2_E_1) & 0xf;
2889 pmd_type = skge_read8(hw, B2_PMD_TYP);
2890 hw->copper = (pmd_type == 'T' || pmd_type == '1');
2892 switch (hw->chip_id) {
2893 case CHIP_ID_GENESIS:
2896 hw->phy_addr = PHY_ADDR_BCOM;
2899 printk(KERN_ERR PFX "%s: unsupported phy type 0x%x\n",
2900 pci_name(hw->pdev), phy_type);
2906 case CHIP_ID_YUKON_LITE:
2907 case CHIP_ID_YUKON_LP:
2908 if (phy_type < SK_PHY_MARV_COPPER && pmd_type != 'S')
2911 hw->phy_addr = PHY_ADDR_MARV;
2915 printk(KERN_ERR PFX "%s: unsupported chip type 0x%x\n",
2916 pci_name(hw->pdev), hw->chip_id);
2920 mac_cfg = skge_read8(hw, B2_MAC_CFG);
2921 hw->ports = (mac_cfg & CFG_SNG_MAC) ? 1 : 2;
2922 hw->chip_rev = (mac_cfg & CFG_CHIP_R_MSK) >> 4;
2924 /* read the adapters RAM size */
2925 t8 = skge_read8(hw, B2_E_0);
2926 if (hw->chip_id == CHIP_ID_GENESIS) {
2928 /* special case: 4 x 64k x 36, offset = 0x80000 */
2929 hw->ram_size = 0x100000;
2930 hw->ram_offset = 0x80000;
2932 hw->ram_size = t8 * 512;
2935 hw->ram_size = 0x20000;
2937 hw->ram_size = t8 * 4096;
2939 hw->intr_mask = IS_HW_ERR | IS_EXT_REG;
2940 if (hw->chip_id == CHIP_ID_GENESIS)
2943 /* switch power to VCC (WA for VAUX problem) */
2944 skge_write8(hw, B0_POWER_CTRL,
2945 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
2946 /* avoid boards with stuck Hardware error bits */
2947 if ((skge_read32(hw, B0_ISRC) & IS_HW_ERR) &&
2948 (skge_read32(hw, B0_HWE_ISRC) & IS_IRQ_SENSOR)) {
2949 printk(KERN_WARNING PFX "stuck hardware sensor bit\n");
2950 hw->intr_mask &= ~IS_HW_ERR;
2953 for (i = 0; i < hw->ports; i++) {
2954 skge_write16(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2955 skge_write16(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2959 /* turn off hardware timer (unused) */
2960 skge_write8(hw, B2_TI_CTRL, TIM_STOP);
2961 skge_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
2962 skge_write8(hw, B0_LED, LED_STAT_ON);
2964 /* enable the Tx Arbiters */
2965 for (i = 0; i < hw->ports; i++)
2966 skge_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
2968 /* Initialize ram interface */
2969 skge_write16(hw, B3_RI_CTRL, RI_RST_CLR);
2971 skge_write8(hw, B3_RI_WTO_R1, SK_RI_TO_53);
2972 skge_write8(hw, B3_RI_WTO_XA1, SK_RI_TO_53);
2973 skge_write8(hw, B3_RI_WTO_XS1, SK_RI_TO_53);
2974 skge_write8(hw, B3_RI_RTO_R1, SK_RI_TO_53);
2975 skge_write8(hw, B3_RI_RTO_XA1, SK_RI_TO_53);
2976 skge_write8(hw, B3_RI_RTO_XS1, SK_RI_TO_53);
2977 skge_write8(hw, B3_RI_WTO_R2, SK_RI_TO_53);
2978 skge_write8(hw, B3_RI_WTO_XA2, SK_RI_TO_53);
2979 skge_write8(hw, B3_RI_WTO_XS2, SK_RI_TO_53);
2980 skge_write8(hw, B3_RI_RTO_R2, SK_RI_TO_53);
2981 skge_write8(hw, B3_RI_RTO_XA2, SK_RI_TO_53);
2982 skge_write8(hw, B3_RI_RTO_XS2, SK_RI_TO_53);
2984 skge_write32(hw, B0_HWE_IMSK, IS_ERR_MSK);
2986 /* Set interrupt moderation for Transmit only
2987 * Receive interrupts avoided by NAPI
2989 skge_write32(hw, B2_IRQM_MSK, IS_XA1_F|IS_XA2_F);
2990 skge_write32(hw, B2_IRQM_INI, skge_usecs2clk(hw, 100));
2991 skge_write32(hw, B2_IRQM_CTRL, TIM_START);
2993 skge_write32(hw, B0_IMSK, hw->intr_mask);
2995 spin_lock_bh(&hw->phy_lock);
2996 for (i = 0; i < hw->ports; i++) {
2997 if (hw->chip_id == CHIP_ID_GENESIS)
2998 genesis_reset(hw, i);
3002 spin_unlock_bh(&hw->phy_lock);
3007 /* Initialize network device */
3008 static struct net_device *skge_devinit(struct skge_hw *hw, int port,
3011 struct skge_port *skge;
3012 struct net_device *dev = alloc_etherdev(sizeof(*skge));
3015 printk(KERN_ERR "skge etherdev alloc failed");
3019 SET_MODULE_OWNER(dev);
3020 SET_NETDEV_DEV(dev, &hw->pdev->dev);
3021 dev->open = skge_up;
3022 dev->stop = skge_down;
3023 dev->hard_start_xmit = skge_xmit_frame;
3024 dev->get_stats = skge_get_stats;
3025 if (hw->chip_id == CHIP_ID_GENESIS)
3026 dev->set_multicast_list = genesis_set_multicast;
3028 dev->set_multicast_list = yukon_set_multicast;
3030 dev->set_mac_address = skge_set_mac_address;
3031 dev->change_mtu = skge_change_mtu;
3032 SET_ETHTOOL_OPS(dev, &skge_ethtool_ops);
3033 dev->tx_timeout = skge_tx_timeout;
3034 dev->watchdog_timeo = TX_WATCHDOG;
3035 dev->poll = skge_poll;
3036 dev->weight = NAPI_WEIGHT;
3037 #ifdef CONFIG_NET_POLL_CONTROLLER
3038 dev->poll_controller = skge_netpoll;
3040 dev->irq = hw->pdev->irq;
3041 dev->features = NETIF_F_LLTX;
3043 dev->features |= NETIF_F_HIGHDMA;
3045 skge = netdev_priv(dev);
3048 skge->msg_enable = netif_msg_init(debug, default_msg);
3049 skge->tx_ring.count = DEFAULT_TX_RING_SIZE;
3050 skge->rx_ring.count = DEFAULT_RX_RING_SIZE;
3052 /* Auto speed and flow control */
3053 skge->autoneg = AUTONEG_ENABLE;
3054 skge->flow_control = FLOW_MODE_SYMMETRIC;
3057 skge->advertising = skge_supported_modes(hw);
3059 hw->dev[port] = dev;
3063 spin_lock_init(&skge->tx_lock);
3065 if (hw->chip_id != CHIP_ID_GENESIS) {
3066 dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
3070 /* read the mac address */
3071 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port*8, ETH_ALEN);
3073 /* device is off until link detection */
3074 netif_carrier_off(dev);
3075 netif_stop_queue(dev);
3080 static void __devinit skge_show_addr(struct net_device *dev)
3082 const struct skge_port *skge = netdev_priv(dev);
3084 if (netif_msg_probe(skge))
3085 printk(KERN_INFO PFX "%s: addr %02x:%02x:%02x:%02x:%02x:%02x\n",
3087 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
3088 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
3091 static int __devinit skge_probe(struct pci_dev *pdev,
3092 const struct pci_device_id *ent)
3094 struct net_device *dev, *dev1;
3096 int err, using_dac = 0;
3098 if ((err = pci_enable_device(pdev))) {
3099 printk(KERN_ERR PFX "%s cannot enable PCI device\n",
3104 if ((err = pci_request_regions(pdev, DRV_NAME))) {
3105 printk(KERN_ERR PFX "%s cannot obtain PCI resources\n",
3107 goto err_out_disable_pdev;
3110 pci_set_master(pdev);
3112 if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)))
3114 else if (!(err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) {
3115 printk(KERN_ERR PFX "%s no usable DMA configuration\n",
3117 goto err_out_free_regions;
3121 /* byte swap decriptors in hardware */
3125 pci_read_config_dword(pdev, PCI_DEV_REG2, ®);
3126 reg |= PCI_REV_DESC;
3127 pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
3132 hw = kmalloc(sizeof(*hw), GFP_KERNEL);
3134 printk(KERN_ERR PFX "%s: cannot allocate hardware struct\n",
3136 goto err_out_free_regions;
3139 memset(hw, 0, sizeof(*hw));
3141 spin_lock_init(&hw->phy_lock);
3142 tasklet_init(&hw->ext_tasklet, skge_extirq, (unsigned long) hw);
3144 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
3146 printk(KERN_ERR PFX "%s: cannot map device registers\n",
3148 goto err_out_free_hw;
3151 if ((err = request_irq(pdev->irq, skge_intr, SA_SHIRQ, DRV_NAME, hw))) {
3152 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3153 pci_name(pdev), pdev->irq);
3154 goto err_out_iounmap;
3156 pci_set_drvdata(pdev, hw);
3158 err = skge_reset(hw);
3160 goto err_out_free_irq;
3162 printk(KERN_INFO PFX "addr 0x%lx irq %d chip %s rev %d\n",
3163 pci_resource_start(pdev, 0), pdev->irq,
3164 skge_board_name(hw), hw->chip_rev);
3166 if ((dev = skge_devinit(hw, 0, using_dac)) == NULL)
3167 goto err_out_led_off;
3169 if ((err = register_netdev(dev))) {
3170 printk(KERN_ERR PFX "%s: cannot register net device\n",
3172 goto err_out_free_netdev;
3175 skge_show_addr(dev);
3177 if (hw->ports > 1 && (dev1 = skge_devinit(hw, 1, using_dac))) {
3178 if (register_netdev(dev1) == 0)
3179 skge_show_addr(dev1);
3181 /* Failure to register second port need not be fatal */
3182 printk(KERN_WARNING PFX "register of second port failed\n");
3190 err_out_free_netdev:
3193 skge_write16(hw, B0_LED, LED_STAT_OFF);
3195 free_irq(pdev->irq, hw);
3200 err_out_free_regions:
3201 pci_release_regions(pdev);
3202 err_out_disable_pdev:
3203 pci_disable_device(pdev);
3204 pci_set_drvdata(pdev, NULL);
3209 static void __devexit skge_remove(struct pci_dev *pdev)
3211 struct skge_hw *hw = pci_get_drvdata(pdev);
3212 struct net_device *dev0, *dev1;
3217 if ((dev1 = hw->dev[1]))
3218 unregister_netdev(dev1);
3220 unregister_netdev(dev0);
3222 skge_write32(hw, B0_IMSK, 0);
3223 skge_write16(hw, B0_LED, LED_STAT_OFF);
3225 skge_write8(hw, B0_CTST, CS_RST_SET);
3227 tasklet_kill(&hw->ext_tasklet);
3229 free_irq(pdev->irq, hw);
3230 pci_release_regions(pdev);
3231 pci_disable_device(pdev);
3238 pci_set_drvdata(pdev, NULL);
3242 static int skge_suspend(struct pci_dev *pdev, pm_message_t state)
3244 struct skge_hw *hw = pci_get_drvdata(pdev);
3247 for (i = 0; i < 2; i++) {
3248 struct net_device *dev = hw->dev[i];
3251 struct skge_port *skge = netdev_priv(dev);
3252 if (netif_running(dev)) {
3253 netif_carrier_off(dev);
3255 netif_stop_queue(dev);
3259 netif_device_detach(dev);
3264 pci_save_state(pdev);
3265 pci_enable_wake(pdev, pci_choose_state(pdev, state), wol);
3266 pci_disable_device(pdev);
3267 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3272 static int skge_resume(struct pci_dev *pdev)
3274 struct skge_hw *hw = pci_get_drvdata(pdev);
3277 pci_set_power_state(pdev, PCI_D0);
3278 pci_restore_state(pdev);
3279 pci_enable_wake(pdev, PCI_D0, 0);
3283 for (i = 0; i < 2; i++) {
3284 struct net_device *dev = hw->dev[i];
3286 netif_device_attach(dev);
3287 if (netif_running(dev))
3295 static struct pci_driver skge_driver = {
3297 .id_table = skge_id_table,
3298 .probe = skge_probe,
3299 .remove = __devexit_p(skge_remove),
3301 .suspend = skge_suspend,
3302 .resume = skge_resume,
3306 static int __init skge_init_module(void)
3308 return pci_module_init(&skge_driver);
3311 static void __exit skge_cleanup_module(void)
3313 pci_unregister_driver(&skge_driver);
3316 module_init(skge_init_module);
3317 module_exit(skge_cleanup_module);