2 * New driver for Marvell Yukon 2 chipset.
3 * Based on earlier sk98lin, and skge driver.
5 * This driver intentionally does not support all the features
6 * of the original driver such as link fail-over and link management because
7 * those should be done at higher levels.
9 * Copyright (C) 2005 Stephen Hemminger <shemminger@osdl.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 * - coalescing setting?
35 #include <linux/config.h>
36 #include <linux/crc32.h>
37 #include <linux/kernel.h>
38 #include <linux/version.h>
39 #include <linux/module.h>
40 #include <linux/netdevice.h>
41 #include <linux/dma-mapping.h>
42 #include <linux/etherdevice.h>
43 #include <linux/ethtool.h>
44 #include <linux/pci.h>
46 #include <linux/tcp.h>
48 #include <linux/delay.h>
49 #include <linux/if_vlan.h>
50 #include <linux/mii.h>
54 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
55 #define SKY2_VLAN_TAG_USED 1
60 #define DRV_NAME "sky2"
61 #define DRV_VERSION "0.9"
62 #define PFX DRV_NAME " "
65 * The Yukon II chipset takes 64 bit command blocks (called list elements)
66 * that are organized into three (receive, transmit, status) different rings
67 * similar to Tigon3. A transmit can require several elements;
68 * a receive requires one (or two if using 64 bit dma).
71 #define is_ec_a1(hw) \
72 unlikely((hw)->chip_id == CHIP_ID_YUKON_EC && \
73 (hw)->chip_rev == CHIP_REV_YU_EC_A1)
75 #define RX_LE_SIZE 512
76 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
77 #define RX_MAX_PENDING (RX_LE_SIZE/2 - 2)
78 #define RX_DEF_PENDING RX_MAX_PENDING
79 #define RX_COPY_THRESHOLD 256
81 #define TX_RING_SIZE 512
82 #define TX_DEF_PENDING (TX_RING_SIZE - 1)
83 #define TX_MIN_PENDING 64
84 #define MAX_SKB_TX_LE (4 + 2*MAX_SKB_FRAGS)
86 #define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
87 #define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
88 #define ETH_JUMBO_MTU 9000
89 #define TX_WATCHDOG (5 * HZ)
90 #define NAPI_WEIGHT 64
91 #define PHY_RETRIES 1000
93 static const u32 default_msg =
94 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
95 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
96 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN | NETIF_MSG_INTR;
98 static int debug = -1; /* defaults above */
99 module_param(debug, int, 0);
100 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
102 static const struct pci_device_id sky2_id_table[] = {
103 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) },
104 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) },
105 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) },
106 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b01) },
107 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) },
108 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) },
109 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) },
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) },
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) },
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) },
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) },
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) },
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) },
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) },
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) },
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) },
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) },
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) },
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) },
125 MODULE_DEVICE_TABLE(pci, sky2_id_table);
127 /* Avoid conditionals by using array */
128 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
129 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
131 /* This driver supports yukon2 chipset only */
132 static const char *yukon2_name[] = {
134 "EC Ultra", /* 0xb4 */
135 "UNKNOWN", /* 0xb5 */
140 /* Access to external PHY */
141 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
145 gma_write16(hw, port, GM_SMI_DATA, val);
146 gma_write16(hw, port, GM_SMI_CTRL,
147 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
149 for (i = 0; i < PHY_RETRIES; i++) {
150 if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
155 printk(KERN_WARNING PFX "%s: phy write timeout\n", hw->dev[port]->name);
159 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
163 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
164 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
166 for (i = 0; i < PHY_RETRIES; i++) {
167 if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL) {
168 *val = gma_read16(hw, port, GM_SMI_DATA);
178 static u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
182 if (__gm_phy_read(hw, port, reg, &v) != 0)
183 printk(KERN_WARNING PFX "%s: phy read timeout\n", hw->dev[port]->name);
187 static int sky2_set_power_state(struct sky2_hw *hw, pci_power_t state)
194 pr_debug("sky2_set_power_state %d\n", state);
195 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
197 pci_read_config_word(hw->pdev, hw->pm_cap + PCI_PM_PMC, &power_control);
198 vaux = (sky2_read8(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
199 (power_control & PCI_PM_CAP_PME_D3cold);
201 pci_read_config_word(hw->pdev, hw->pm_cap + PCI_PM_CTRL, &power_control);
203 power_control |= PCI_PM_CTRL_PME_STATUS;
204 power_control &= ~(PCI_PM_CTRL_STATE_MASK);
208 /* switch power to VCC (WA for VAUX problem) */
209 sky2_write8(hw, B0_POWER_CTRL,
210 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
212 /* disable Core Clock Division, */
213 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
215 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
216 /* enable bits are inverted */
217 sky2_write8(hw, B2_Y2_CLK_GATE,
218 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
219 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
220 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
222 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
224 /* Turn off phy power saving */
225 pci_read_config_dword(hw->pdev, PCI_DEV_REG1, ®1);
226 reg1 &= ~(PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
228 /* looks like this XL is back asswards .. */
229 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1) {
230 reg1 |= PCI_Y2_PHY1_COMA;
232 reg1 |= PCI_Y2_PHY2_COMA;
234 pci_write_config_dword(hw->pdev, PCI_DEV_REG1, reg1);
239 /* Turn on phy power saving */
240 pci_read_config_dword(hw->pdev, PCI_DEV_REG1, ®1);
241 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
242 reg1 &= ~(PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
244 reg1 |= (PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
245 pci_write_config_dword(hw->pdev, PCI_DEV_REG1, reg1);
247 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
248 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
250 /* enable bits are inverted */
251 sky2_write8(hw, B2_Y2_CLK_GATE,
252 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
253 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
254 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
256 /* switch power to VAUX */
257 if (vaux && state != PCI_D3cold)
258 sky2_write8(hw, B0_POWER_CTRL,
259 (PC_VAUX_ENA | PC_VCC_ENA |
260 PC_VAUX_ON | PC_VCC_OFF));
263 printk(KERN_ERR PFX "Unknown power state %d\n", state);
267 pci_write_config_byte(hw->pdev, hw->pm_cap + PCI_PM_CTRL, power_control);
268 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
272 static void sky2_phy_reset(struct sky2_hw *hw, unsigned port)
276 /* disable all GMAC IRQ's */
277 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
278 /* disable PHY IRQs */
279 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
281 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
282 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
283 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
284 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
286 reg = gma_read16(hw, port, GM_RX_CTRL);
287 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
288 gma_write16(hw, port, GM_RX_CTRL, reg);
291 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
293 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
294 u16 ctrl, ct1000, adv, pg, ledctrl, ledover;
296 if (sky2->autoneg == AUTONEG_ENABLE && hw->chip_id != CHIP_ID_YUKON_XL) {
297 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
299 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
301 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
303 if (hw->chip_id == CHIP_ID_YUKON_EC)
304 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
306 ectrl |= PHY_M_EC_M_DSC(2) | PHY_M_EC_S_DSC(3);
308 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
311 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
313 if (hw->chip_id == CHIP_ID_YUKON_FE) {
314 /* enable automatic crossover */
315 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
317 /* disable energy detect */
318 ctrl &= ~PHY_M_PC_EN_DET_MSK;
320 /* enable automatic crossover */
321 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
323 if (sky2->autoneg == AUTONEG_ENABLE &&
324 hw->chip_id == CHIP_ID_YUKON_XL) {
325 ctrl &= ~PHY_M_PC_DSC_MSK;
326 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
329 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
331 /* workaround for deviation #4.88 (CRC errors) */
332 /* disable Automatic Crossover */
334 ctrl &= ~PHY_M_PC_MDIX_MSK;
335 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
337 if (hw->chip_id == CHIP_ID_YUKON_XL) {
338 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
339 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
340 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
341 ctrl &= ~PHY_M_MAC_MD_MSK;
342 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
343 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
345 /* select page 1 to access Fiber registers */
346 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
350 ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
351 if (sky2->autoneg == AUTONEG_DISABLE)
356 ctrl |= PHY_CT_RESET;
357 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
363 if (sky2->autoneg == AUTONEG_ENABLE) {
365 if (sky2->advertising & ADVERTISED_1000baseT_Full)
366 ct1000 |= PHY_M_1000C_AFD;
367 if (sky2->advertising & ADVERTISED_1000baseT_Half)
368 ct1000 |= PHY_M_1000C_AHD;
369 if (sky2->advertising & ADVERTISED_100baseT_Full)
370 adv |= PHY_M_AN_100_FD;
371 if (sky2->advertising & ADVERTISED_100baseT_Half)
372 adv |= PHY_M_AN_100_HD;
373 if (sky2->advertising & ADVERTISED_10baseT_Full)
374 adv |= PHY_M_AN_10_FD;
375 if (sky2->advertising & ADVERTISED_10baseT_Half)
376 adv |= PHY_M_AN_10_HD;
377 } else /* special defines for FIBER (88E1011S only) */
378 adv |= PHY_M_AN_1000X_AHD | PHY_M_AN_1000X_AFD;
380 /* Set Flow-control capabilities */
381 if (sky2->tx_pause && sky2->rx_pause)
382 adv |= PHY_AN_PAUSE_CAP; /* symmetric */
383 else if (sky2->rx_pause && !sky2->tx_pause)
384 adv |= PHY_AN_PAUSE_ASYM | PHY_AN_PAUSE_CAP;
385 else if (!sky2->rx_pause && sky2->tx_pause)
386 adv |= PHY_AN_PAUSE_ASYM; /* local */
388 /* Restart Auto-negotiation */
389 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
391 /* forced speed/duplex settings */
392 ct1000 = PHY_M_1000C_MSE;
394 if (sky2->duplex == DUPLEX_FULL)
395 ctrl |= PHY_CT_DUP_MD;
397 switch (sky2->speed) {
399 ctrl |= PHY_CT_SP1000;
402 ctrl |= PHY_CT_SP100;
406 ctrl |= PHY_CT_RESET;
409 if (hw->chip_id != CHIP_ID_YUKON_FE)
410 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
412 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
413 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
415 /* Setup Phy LED's */
416 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
419 switch (hw->chip_id) {
420 case CHIP_ID_YUKON_FE:
421 /* on 88E3082 these bits are at 11..9 (shifted left) */
422 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
424 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
426 /* delete ACT LED control bits */
427 ctrl &= ~PHY_M_FELP_LED1_MSK;
428 /* change ACT LED control to blink mode */
429 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
430 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
433 case CHIP_ID_YUKON_XL:
434 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
436 /* select page 3 to access LED control register */
437 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
439 /* set LED Function Control register */
440 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
441 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
442 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
443 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
445 /* set Polarity Control register */
446 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
447 (PHY_M_POLC_LS1_P_MIX(4) |
448 PHY_M_POLC_IS0_P_MIX(4) |
449 PHY_M_POLC_LOS_CTRL(2) |
450 PHY_M_POLC_INIT_CTRL(2) |
451 PHY_M_POLC_STA1_CTRL(2) |
452 PHY_M_POLC_STA0_CTRL(2)));
454 /* restore page register */
455 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
459 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
460 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
461 /* turn off the Rx LED (LED_RX) */
462 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
465 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
467 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
468 /* turn on 100 Mbps LED (LED_LINK100) */
469 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
473 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
475 /* Enable phy interrupt on auto-negotiation complete (or link up) */
476 if (sky2->autoneg == AUTONEG_ENABLE)
477 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
479 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
482 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
484 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
487 const u8 *addr = hw->dev[port]->dev_addr;
489 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
490 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR|GPC_ENA_PAUSE);
492 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
494 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
495 /* WA DEV_472 -- looks like crossed wires on port 2 */
496 /* clear GMAC 1 Control reset */
497 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
499 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
500 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
501 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
502 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
503 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
506 if (sky2->autoneg == AUTONEG_DISABLE) {
507 reg = gma_read16(hw, port, GM_GP_CTRL);
508 reg |= GM_GPCR_AU_ALL_DIS;
509 gma_write16(hw, port, GM_GP_CTRL, reg);
510 gma_read16(hw, port, GM_GP_CTRL);
512 switch (sky2->speed) {
514 reg |= GM_GPCR_SPEED_1000;
517 reg |= GM_GPCR_SPEED_100;
520 if (sky2->duplex == DUPLEX_FULL)
521 reg |= GM_GPCR_DUP_FULL;
523 reg = GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100 | GM_GPCR_DUP_FULL;
525 if (!sky2->tx_pause && !sky2->rx_pause) {
526 sky2_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
528 GM_GPCR_FC_TX_DIS | GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
529 } else if (sky2->tx_pause && !sky2->rx_pause) {
530 /* disable Rx flow-control */
531 reg |= GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
534 gma_write16(hw, port, GM_GP_CTRL, reg);
536 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
538 spin_lock_bh(&hw->phy_lock);
539 sky2_phy_init(hw, port);
540 spin_unlock_bh(&hw->phy_lock);
543 reg = gma_read16(hw, port, GM_PHY_ADDR);
544 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
546 for (i = 0; i < GM_MIB_CNT_SIZE; i++)
547 gma_read16(hw, port, GM_MIB_CNT_BASE + 8 * i);
548 gma_write16(hw, port, GM_PHY_ADDR, reg);
550 /* transmit control */
551 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
553 /* receive control reg: unicast + multicast + no FCS */
554 gma_write16(hw, port, GM_RX_CTRL,
555 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
557 /* transmit flow control */
558 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
560 /* transmit parameter */
561 gma_write16(hw, port, GM_TX_PARAM,
562 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
563 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
564 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
565 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
567 /* serial mode register */
568 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
569 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
571 if (hw->dev[port]->mtu > ETH_DATA_LEN)
572 reg |= GM_SMOD_JUMBO_ENA;
574 gma_write16(hw, port, GM_SERIAL_MODE, reg);
576 /* virtual address for data */
577 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
579 /* physical address: used for pause frames */
580 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
582 /* ignore counter overflows */
583 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
584 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
585 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
587 /* Configure Rx MAC FIFO */
588 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
589 sky2_write16(hw, SK_REG(port, RX_GMF_CTRL_T),
592 /* Flush Rx MAC FIFO on any flow control or error */
593 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
595 /* Set threshold to 0xa (64 bytes)
596 * ASF disabled so no need to do WA dev #4.30
598 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF);
600 /* Configure Tx MAC FIFO */
601 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
602 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
604 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
605 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
606 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
607 if (hw->dev[port]->mtu > ETH_DATA_LEN) {
608 /* set Tx GMAC FIFO Almost Empty Threshold */
609 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR), 0x180);
610 /* Disable Store & Forward mode for TX */
611 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
617 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, size_t len)
623 end = start + len - 1;
625 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
626 sky2_write32(hw, RB_ADDR(q, RB_START), start);
627 sky2_write32(hw, RB_ADDR(q, RB_END), end);
628 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
629 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
631 if (q == Q_R1 || q == Q_R2) {
637 /* Set thresholds on receive queue's */
638 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), rxup);
639 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), rxlo);
641 /* Enable store & forward on Tx queue's because
642 * Tx FIFO is only 1K on Yukon
644 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
647 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
648 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
651 /* Setup Bus Memory Interface */
652 static void sky2_qset(struct sky2_hw *hw, u16 q)
654 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
655 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
656 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
657 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
660 /* Setup prefetch unit registers. This is the interface between
661 * hardware and driver list elements
663 static inline void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
666 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
667 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
668 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
669 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
670 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
671 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
673 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
676 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
678 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
680 sky2->tx_prod = (sky2->tx_prod + 1) % TX_RING_SIZE;
685 * This is a workaround code taken from SysKonnect sk98lin driver
686 * to deal with chip bug on Yukon EC rev 0 in the wraparound case.
688 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q,
689 u16 idx, u16 *last, u16 size)
691 if (is_ec_a1(hw) && idx < *last) {
692 u16 hwget = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
695 /* Start prefetching again */
696 sky2_write8(hw, Y2_QADDR(q, PREF_UNIT_FIFO_WM), 0xe0);
700 if (hwget == size - 1) {
701 /* set watermark to one list element */
702 sky2_write8(hw, Y2_QADDR(q, PREF_UNIT_FIFO_WM), 8);
704 /* set put index to first list element */
705 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), 0);
706 } else /* have hardware go to end of list */
707 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX),
711 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
717 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
719 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
720 sky2->rx_put = (sky2->rx_put + 1) % RX_LE_SIZE;
724 /* Return high part of DMA address (could be 32 or 64 bit) */
725 static inline u32 high32(dma_addr_t a)
727 return (a >> 16) >> 16;
730 /* Build description to hardware about buffer */
731 static inline void sky2_rx_add(struct sky2_port *sky2, struct ring_info *re)
733 struct sky2_rx_le *le;
734 u32 hi = high32(re->mapaddr);
736 re->idx = sky2->rx_put;
737 if (sky2->rx_addr64 != hi) {
738 le = sky2_next_rx(sky2);
739 le->addr = cpu_to_le32(hi);
741 le->opcode = OP_ADDR64 | HW_OWNER;
742 sky2->rx_addr64 = high32(re->mapaddr + re->maplen);
745 le = sky2_next_rx(sky2);
746 le->addr = cpu_to_le32((u32) re->mapaddr);
747 le->length = cpu_to_le16(re->maplen);
749 le->opcode = OP_PACKET | HW_OWNER;
753 /* Tell chip where to start receive checksum.
754 * Actually has two checksums, but set both same to avoid possible byte
757 static void rx_set_checksum(struct sky2_port *sky2)
759 struct sky2_rx_le *le;
761 le = sky2_next_rx(sky2);
762 le->addr = (ETH_HLEN << 16) | ETH_HLEN;
764 le->opcode = OP_TCPSTART | HW_OWNER;
766 sky2_write32(sky2->hw,
767 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
768 sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
773 * The RX Stop command will not work for Yukon-2 if the BMU does not
774 * reach the end of packet and since we can't make sure that we have
775 * incoming data, we must reset the BMU while it is not doing a DMA
776 * transfer. Since it is possible that the RX path is still active,
777 * the RX RAM buffer will be stopped first, so any possible incoming
778 * data will not trigger a DMA. After the RAM buffer is stopped, the
779 * BMU is polled until any DMA in progress is ended and only then it
782 static void sky2_rx_stop(struct sky2_port *sky2)
784 struct sky2_hw *hw = sky2->hw;
785 unsigned rxq = rxqaddr[sky2->port];
788 /* disable the RAM Buffer receive queue */
789 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
791 for (i = 0; i < 0xffff; i++)
792 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
793 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
796 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
799 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
801 /* reset the Rx prefetch unit */
802 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
805 /* Clean out receive buffer area, assumes receiver hardware stopped */
806 static void sky2_rx_clean(struct sky2_port *sky2)
810 memset(sky2->rx_le, 0, RX_LE_BYTES);
811 for (i = 0; i < sky2->rx_pending; i++) {
812 struct ring_info *re = sky2->rx_ring + i;
815 pci_unmap_single(sky2->hw->pdev,
816 re->mapaddr, re->maplen,
824 /* Basic MII support */
825 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
827 struct mii_ioctl_data *data = if_mii(ifr);
828 struct sky2_port *sky2 = netdev_priv(dev);
829 struct sky2_hw *hw = sky2->hw;
830 int err = -EOPNOTSUPP;
832 if (!netif_running(dev))
833 return -ENODEV; /* Phy still in reset */
837 data->phy_id = PHY_ADDR_MARV;
842 spin_lock_bh(&hw->phy_lock);
843 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
844 spin_unlock_bh(&hw->phy_lock);
850 if (!capable(CAP_NET_ADMIN))
853 spin_lock_bh(&hw->phy_lock);
854 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
856 spin_unlock_bh(&hw->phy_lock);
862 #ifdef SKY2_VLAN_TAG_USED
863 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
865 struct sky2_port *sky2 = netdev_priv(dev);
866 struct sky2_hw *hw = sky2->hw;
867 u16 port = sky2->port;
870 spin_lock_irqsave(&sky2->tx_lock, flags);
872 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_ON);
873 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_ON);
876 spin_unlock_irqrestore(&sky2->tx_lock, flags);
879 static void sky2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
881 struct sky2_port *sky2 = netdev_priv(dev);
882 struct sky2_hw *hw = sky2->hw;
883 u16 port = sky2->port;
886 spin_lock_irqsave(&sky2->tx_lock, flags);
888 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_OFF);
889 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_OFF);
891 sky2->vlgrp->vlan_devices[vid] = NULL;
893 spin_unlock_irqrestore(&sky2->tx_lock, flags);
897 #define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
898 static inline unsigned rx_size(const struct sky2_port *sky2)
900 return roundup(sky2->netdev->mtu + ETH_HLEN + 4, 8);
904 * Allocate and setup receiver buffer pool.
905 * In case of 64 bit dma, there are 2X as many list elements
906 * available as ring entries
907 * and need to reserve one list element so we don't wrap around.
909 * It appears the hardware has a bug in the FIFO logic that
910 * cause it to hang if the FIFO gets overrun and the receive buffer
911 * is not aligned. This means we can't use skb_reserve to align
914 static int sky2_rx_start(struct sky2_port *sky2)
916 struct sky2_hw *hw = sky2->hw;
917 unsigned size = rx_size(sky2);
918 unsigned rxq = rxqaddr[sky2->port];
921 sky2->rx_put = sky2->rx_next = 0;
923 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
925 rx_set_checksum(sky2);
926 for (i = 0; i < sky2->rx_pending; i++) {
927 struct ring_info *re = sky2->rx_ring + i;
929 re->skb = dev_alloc_skb(size);
933 re->mapaddr = pci_map_single(hw->pdev, re->skb->data,
934 size, PCI_DMA_FROMDEVICE);
936 sky2_rx_add(sky2, re);
939 /* Tell chip about available buffers */
940 sky2_write16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX), sky2->rx_put);
941 sky2->rx_last_put = sky2_read16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX));
948 /* Bring up network interface. */
949 static int sky2_up(struct net_device *dev)
951 struct sky2_port *sky2 = netdev_priv(dev);
952 struct sky2_hw *hw = sky2->hw;
953 unsigned port = sky2->port;
954 u32 ramsize, rxspace;
957 if (netif_msg_ifup(sky2))
958 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
960 /* must be power of 2 */
961 sky2->tx_le = pci_alloc_consistent(hw->pdev,
963 sizeof(struct sky2_tx_le),
968 sky2->tx_ring = kzalloc(TX_RING_SIZE * sizeof(struct ring_info),
972 sky2->tx_prod = sky2->tx_cons = 0;
974 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
978 memset(sky2->rx_le, 0, RX_LE_BYTES);
980 sky2->rx_ring = kzalloc(sky2->rx_pending * sizeof(struct ring_info),
985 sky2_mac_init(hw, port);
987 /* Configure RAM buffers */
988 if (hw->chip_id == CHIP_ID_YUKON_FE ||
989 (hw->chip_id == CHIP_ID_YUKON_EC && hw->chip_rev == 2))
992 u8 e0 = sky2_read8(hw, B2_E_0);
993 ramsize = (e0 == 0) ? (128 * 1024) : (e0 * 4096);
997 rxspace = (2 * ramsize) / 3;
998 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
999 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1001 /* Make sure SyncQ is disabled */
1002 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1005 sky2_qset(hw, txqaddr[port]);
1006 if (hw->chip_id == CHIP_ID_YUKON_EC_U)
1007 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), 0x1a0);
1010 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1013 err = sky2_rx_start(sky2);
1017 /* Enable interrupts from phy/mac for port */
1018 hw->intr_mask |= (port == 0) ? Y2_IS_PORT_1 : Y2_IS_PORT_2;
1019 sky2_write32(hw, B0_IMSK, hw->intr_mask);
1024 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1025 sky2->rx_le, sky2->rx_le_map);
1027 pci_free_consistent(hw->pdev,
1028 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1029 sky2->tx_le, sky2->tx_le_map);
1031 kfree(sky2->tx_ring);
1033 kfree(sky2->rx_ring);
1038 /* Modular subtraction in ring */
1039 static inline int tx_dist(unsigned tail, unsigned head)
1041 return (head >= tail ? head : head + TX_RING_SIZE) - tail;
1044 /* Number of list elements available for next tx */
1045 static inline int tx_avail(const struct sky2_port *sky2)
1047 return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
1050 /* Estimate of number of transmit list elements required */
1051 static inline unsigned tx_le_req(const struct sk_buff *skb)
1055 count = sizeof(dma_addr_t) / sizeof(u32);
1056 count += skb_shinfo(skb)->nr_frags * count;
1058 if (skb_shinfo(skb)->tso_size)
1068 * Put one packet in ring for transmit.
1069 * A single packet can generate multiple list elements, and
1070 * the number of ring elements will probably be less than the number
1071 * of list elements used.
1073 static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1075 struct sky2_port *sky2 = netdev_priv(dev);
1076 struct sky2_hw *hw = sky2->hw;
1077 struct sky2_tx_le *le = NULL;
1078 struct ring_info *re;
1079 unsigned long flags;
1086 local_irq_save(flags);
1087 if (!spin_trylock(&sky2->tx_lock)) {
1088 local_irq_restore(flags);
1089 return NETDEV_TX_LOCKED;
1092 if (unlikely(tx_avail(sky2) < tx_le_req(skb))) {
1093 netif_stop_queue(dev);
1094 spin_unlock_irqrestore(&sky2->tx_lock, flags);
1096 printk(KERN_WARNING PFX "%s: ring full when queue awake!\n",
1098 return NETDEV_TX_BUSY;
1101 if (unlikely(netif_msg_tx_queued(sky2)))
1102 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1103 dev->name, sky2->tx_prod, skb->len);
1105 len = skb_headlen(skb);
1106 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1107 addr64 = high32(mapping);
1109 re = sky2->tx_ring + sky2->tx_prod;
1111 /* Send high bits if changed or crosses boundary */
1112 if (addr64 != sky2->tx_addr64 || high32(mapping + len) != sky2->tx_addr64) {
1113 le = get_tx_le(sky2);
1114 le->tx.addr = cpu_to_le32(addr64);
1116 le->opcode = OP_ADDR64 | HW_OWNER;
1117 sky2->tx_addr64 = high32(mapping + len);
1120 /* Check for TCP Segmentation Offload */
1121 mss = skb_shinfo(skb)->tso_size;
1123 /* just drop the packet if non-linear expansion fails */
1124 if (skb_header_cloned(skb) &&
1125 pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) {
1126 dev_kfree_skb_any(skb);
1130 mss += ((skb->h.th->doff - 5) * 4); /* TCP options */
1131 mss += (skb->nh.iph->ihl * 4) + sizeof(struct tcphdr);
1135 if (mss != sky2->tx_last_mss) {
1136 le = get_tx_le(sky2);
1137 le->tx.tso.size = cpu_to_le16(mss);
1138 le->tx.tso.rsvd = 0;
1139 le->opcode = OP_LRGLEN | HW_OWNER;
1141 sky2->tx_last_mss = mss;
1145 #ifdef SKY2_VLAN_TAG_USED
1146 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1147 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1149 le = get_tx_le(sky2);
1151 le->opcode = OP_VLAN|HW_OWNER;
1154 le->opcode |= OP_VLAN;
1155 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1160 /* Handle TCP checksum offload */
1161 if (skb->ip_summed == CHECKSUM_HW) {
1162 u16 hdr = skb->h.raw - skb->data;
1163 u16 offset = hdr + skb->csum;
1165 ctrl = CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1166 if (skb->nh.iph->protocol == IPPROTO_UDP)
1169 le = get_tx_le(sky2);
1170 le->tx.csum.start = cpu_to_le16(hdr);
1171 le->tx.csum.offset = cpu_to_le16(offset);
1172 le->length = 0; /* initial checksum value */
1173 le->ctrl = 1; /* one packet */
1174 le->opcode = OP_TCPLISW | HW_OWNER;
1177 le = get_tx_le(sky2);
1178 le->tx.addr = cpu_to_le32((u32) mapping);
1179 le->length = cpu_to_le16(len);
1181 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1183 /* Record the transmit mapping info */
1185 re->mapaddr = mapping;
1188 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1189 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1190 struct ring_info *fre;
1192 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1193 frag->size, PCI_DMA_TODEVICE);
1194 addr64 = (mapping >> 16) >> 16;
1195 if (addr64 != sky2->tx_addr64) {
1196 le = get_tx_le(sky2);
1197 le->tx.addr = cpu_to_le32(addr64);
1199 le->opcode = OP_ADDR64 | HW_OWNER;
1200 sky2->tx_addr64 = addr64;
1203 le = get_tx_le(sky2);
1204 le->tx.addr = cpu_to_le32((u32) mapping);
1205 le->length = cpu_to_le16(frag->size);
1207 le->opcode = OP_BUFFER | HW_OWNER;
1210 + ((re - sky2->tx_ring) + i + 1) % TX_RING_SIZE;
1212 fre->mapaddr = mapping;
1213 fre->maplen = frag->size;
1215 re->idx = sky2->tx_prod;
1218 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod,
1219 &sky2->tx_last_put, TX_RING_SIZE);
1221 if (tx_avail(sky2) < MAX_SKB_TX_LE + 1)
1222 netif_stop_queue(dev);
1226 spin_unlock_irqrestore(&sky2->tx_lock, flags);
1228 dev->trans_start = jiffies;
1229 return NETDEV_TX_OK;
1233 * Free ring elements from starting at tx_cons until "done"
1235 * NB: the hardware will tell us about partial completion of multi-part
1236 * buffers; these are deferred until completion.
1238 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1240 struct net_device *dev = sky2->netdev;
1243 if (done == sky2->tx_cons)
1246 if (unlikely(netif_msg_tx_done(sky2)))
1247 printk(KERN_DEBUG "%s: tx done, up to %u\n",
1250 spin_lock(&sky2->tx_lock);
1252 while (sky2->tx_cons != done) {
1253 struct ring_info *re = sky2->tx_ring + sky2->tx_cons;
1254 struct sk_buff *skb;
1256 /* Check for partial status */
1257 if (tx_dist(sky2->tx_cons, done)
1258 < tx_dist(sky2->tx_cons, re->idx))
1262 pci_unmap_single(sky2->hw->pdev,
1263 re->mapaddr, re->maplen, PCI_DMA_TODEVICE);
1265 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1266 struct ring_info *fre;
1268 sky2->tx_ring + (sky2->tx_cons + i +
1270 pci_unmap_page(sky2->hw->pdev, fre->mapaddr,
1271 fre->maplen, PCI_DMA_TODEVICE);
1274 dev_kfree_skb_any(skb);
1276 sky2->tx_cons = re->idx;
1280 if (netif_queue_stopped(dev) && tx_avail(sky2) > MAX_SKB_TX_LE)
1281 netif_wake_queue(dev);
1282 spin_unlock(&sky2->tx_lock);
1285 /* Cleanup all untransmitted buffers, assume transmitter not running */
1286 static inline void sky2_tx_clean(struct sky2_port *sky2)
1288 sky2_tx_complete(sky2, sky2->tx_prod);
1291 /* Network shutdown */
1292 static int sky2_down(struct net_device *dev)
1294 struct sky2_port *sky2 = netdev_priv(dev);
1295 struct sky2_hw *hw = sky2->hw;
1296 unsigned port = sky2->port;
1299 if (netif_msg_ifdown(sky2))
1300 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1302 /* Stop more packets from being queued */
1303 netif_stop_queue(dev);
1305 /* Disable port IRQ */
1306 local_irq_disable();
1307 hw->intr_mask &= ~((sky2->port == 0) ? Y2_IS_IRQ_PHY1 : Y2_IS_IRQ_PHY2);
1308 sky2_write32(hw, B0_IMSK, hw->intr_mask);
1312 sky2_phy_reset(hw, port);
1314 /* Stop transmitter */
1315 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1316 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1318 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1319 RB_RST_SET | RB_DIS_OP_MD);
1321 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1322 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1323 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1325 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1327 /* Workaround shared GMAC reset */
1328 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1329 && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1330 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1332 /* Disable Force Sync bit and Enable Alloc bit */
1333 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1334 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1336 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1337 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1338 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1340 /* Reset the PCI FIFO of the async Tx queue */
1341 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1342 BMU_RST_SET | BMU_FIFO_RST);
1344 /* Reset the Tx prefetch units */
1345 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1348 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1352 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1353 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1355 /* turn off LED's */
1356 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1358 synchronize_irq(hw->pdev->irq);
1360 sky2_tx_clean(sky2);
1361 sky2_rx_clean(sky2);
1363 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1364 sky2->rx_le, sky2->rx_le_map);
1365 kfree(sky2->rx_ring);
1367 pci_free_consistent(hw->pdev,
1368 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1369 sky2->tx_le, sky2->tx_le_map);
1370 kfree(sky2->tx_ring);
1375 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1380 if (hw->chip_id == CHIP_ID_YUKON_FE)
1381 return (aux & PHY_M_PS_SPEED_100) ? SPEED_100 : SPEED_10;
1383 switch (aux & PHY_M_PS_SPEED_MSK) {
1384 case PHY_M_PS_SPEED_1000:
1386 case PHY_M_PS_SPEED_100:
1393 static void sky2_link_up(struct sky2_port *sky2)
1395 struct sky2_hw *hw = sky2->hw;
1396 unsigned port = sky2->port;
1399 /* Enable Transmit FIFO Underrun */
1400 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
1402 reg = gma_read16(hw, port, GM_GP_CTRL);
1403 if (sky2->duplex == DUPLEX_FULL || sky2->autoneg == AUTONEG_ENABLE)
1404 reg |= GM_GPCR_DUP_FULL;
1407 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1408 gma_write16(hw, port, GM_GP_CTRL, reg);
1409 gma_read16(hw, port, GM_GP_CTRL);
1411 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1413 netif_carrier_on(sky2->netdev);
1414 netif_wake_queue(sky2->netdev);
1416 /* Turn on link LED */
1417 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1418 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1420 if (hw->chip_id == CHIP_ID_YUKON_XL) {
1421 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
1423 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
1424 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
1425 PHY_M_LEDC_INIT_CTRL(sky2->speed ==
1427 PHY_M_LEDC_STA1_CTRL(sky2->speed ==
1428 SPEED_100 ? 7 : 0) |
1429 PHY_M_LEDC_STA0_CTRL(sky2->speed ==
1430 SPEED_1000 ? 7 : 0));
1431 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
1434 if (netif_msg_link(sky2))
1435 printk(KERN_INFO PFX
1436 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1437 sky2->netdev->name, sky2->speed,
1438 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1439 (sky2->tx_pause && sky2->rx_pause) ? "both" :
1440 sky2->tx_pause ? "tx" : sky2->rx_pause ? "rx" : "none");
1443 static void sky2_link_down(struct sky2_port *sky2)
1445 struct sky2_hw *hw = sky2->hw;
1446 unsigned port = sky2->port;
1449 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1451 reg = gma_read16(hw, port, GM_GP_CTRL);
1452 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1453 gma_write16(hw, port, GM_GP_CTRL, reg);
1454 gma_read16(hw, port, GM_GP_CTRL); /* PCI post */
1456 if (sky2->rx_pause && !sky2->tx_pause) {
1457 /* restore Asymmetric Pause bit */
1458 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV,
1459 gm_phy_read(hw, port, PHY_MARV_AUNE_ADV)
1463 sky2_phy_reset(hw, port);
1465 netif_carrier_off(sky2->netdev);
1466 netif_stop_queue(sky2->netdev);
1468 /* Turn on link LED */
1469 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1471 if (netif_msg_link(sky2))
1472 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
1473 sky2_phy_init(hw, port);
1476 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
1478 struct sky2_hw *hw = sky2->hw;
1479 unsigned port = sky2->port;
1482 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
1484 if (lpa & PHY_M_AN_RF) {
1485 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
1489 if (hw->chip_id != CHIP_ID_YUKON_FE &&
1490 gm_phy_read(hw, port, PHY_MARV_1000T_STAT) & PHY_B_1000S_MSF) {
1491 printk(KERN_ERR PFX "%s: master/slave fault",
1492 sky2->netdev->name);
1496 if (!(aux & PHY_M_PS_SPDUP_RES)) {
1497 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
1498 sky2->netdev->name);
1502 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1504 sky2->speed = sky2_phy_speed(hw, aux);
1506 /* Pause bits are offset (9..8) */
1507 if (hw->chip_id == CHIP_ID_YUKON_XL)
1510 sky2->rx_pause = (aux & PHY_M_PS_RX_P_EN) != 0;
1511 sky2->tx_pause = (aux & PHY_M_PS_TX_P_EN) != 0;
1513 if ((sky2->tx_pause || sky2->rx_pause)
1514 && !(sky2->speed < SPEED_1000 && sky2->duplex == DUPLEX_HALF))
1515 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
1517 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1523 * Interrupt from PHY are handled in tasklet (soft irq)
1524 * because accessing phy registers requires spin wait which might
1525 * cause excess interrupt latency.
1527 static void sky2_phy_task(unsigned long data)
1529 struct sky2_port *sky2 = (struct sky2_port *)data;
1530 struct sky2_hw *hw = sky2->hw;
1531 u16 istatus, phystat;
1533 spin_lock(&hw->phy_lock);
1534 istatus = gm_phy_read(hw, sky2->port, PHY_MARV_INT_STAT);
1535 phystat = gm_phy_read(hw, sky2->port, PHY_MARV_PHY_STAT);
1537 if (netif_msg_intr(sky2))
1538 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
1539 sky2->netdev->name, istatus, phystat);
1541 if (istatus & PHY_M_IS_AN_COMPL) {
1542 if (sky2_autoneg_done(sky2, phystat) == 0)
1547 if (istatus & PHY_M_IS_LSP_CHANGE)
1548 sky2->speed = sky2_phy_speed(hw, phystat);
1550 if (istatus & PHY_M_IS_DUP_CHANGE)
1552 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1554 if (istatus & PHY_M_IS_LST_CHANGE) {
1555 if (phystat & PHY_M_PS_LINK_UP)
1558 sky2_link_down(sky2);
1561 spin_unlock(&hw->phy_lock);
1563 local_irq_disable();
1564 hw->intr_mask |= (sky2->port == 0) ? Y2_IS_IRQ_PHY1 : Y2_IS_IRQ_PHY2;
1565 sky2_write32(hw, B0_IMSK, hw->intr_mask);
1569 static void sky2_tx_timeout(struct net_device *dev)
1571 struct sky2_port *sky2 = netdev_priv(dev);
1573 if (netif_msg_timer(sky2))
1574 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
1576 sky2_write32(sky2->hw, Q_ADDR(txqaddr[sky2->port], Q_CSR), BMU_STOP);
1577 sky2_read32(sky2->hw, Q_ADDR(txqaddr[sky2->port], Q_CSR));
1579 sky2_tx_clean(sky2);
1582 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
1584 struct sky2_port *sky2 = netdev_priv(dev);
1585 struct sky2_hw *hw = sky2->hw;
1589 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
1592 if (hw->chip_id == CHIP_ID_YUKON_EC_U && new_mtu > ETH_DATA_LEN)
1595 if (!netif_running(dev)) {
1600 sky2_write32(hw, B0_IMSK, 0);
1602 dev->trans_start = jiffies; /* prevent tx timeout */
1603 netif_stop_queue(dev);
1604 netif_poll_disable(hw->dev[0]);
1606 ctl = gma_read16(hw, sky2->port, GM_GP_CTRL);
1607 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
1609 sky2_rx_clean(sky2);
1612 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
1613 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
1615 if (dev->mtu > ETH_DATA_LEN)
1616 mode |= GM_SMOD_JUMBO_ENA;
1618 gma_write16(hw, sky2->port, GM_SERIAL_MODE, mode);
1620 sky2_write8(hw, RB_ADDR(rxqaddr[sky2->port], RB_CTRL), RB_ENA_OP_MD);
1622 err = sky2_rx_start(sky2);
1623 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl);
1625 netif_poll_disable(hw->dev[0]);
1626 netif_wake_queue(dev);
1627 sky2_write32(hw, B0_IMSK, hw->intr_mask);
1633 * Receive one packet.
1634 * For small packets or errors, just reuse existing skb.
1635 * For larger packets, get new buffer.
1637 static struct sk_buff *sky2_receive(struct sky2_port *sky2,
1638 u16 length, u32 status)
1640 struct ring_info *re = sky2->rx_ring + sky2->rx_next;
1641 struct sk_buff *skb = NULL;
1642 const unsigned int bufsize = rx_size(sky2);
1644 if (unlikely(netif_msg_rx_status(sky2)))
1645 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
1646 sky2->netdev->name, sky2->rx_next, status, length);
1648 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
1650 if (status & GMR_FS_ANY_ERR)
1653 if (!(status & GMR_FS_RX_OK))
1656 if (length < RX_COPY_THRESHOLD) {
1657 skb = alloc_skb(length + 2, GFP_ATOMIC);
1661 skb_reserve(skb, 2);
1662 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->mapaddr,
1663 length, PCI_DMA_FROMDEVICE);
1664 memcpy(skb->data, re->skb->data, length);
1665 skb->ip_summed = re->skb->ip_summed;
1666 skb->csum = re->skb->csum;
1667 pci_dma_sync_single_for_device(sky2->hw->pdev, re->mapaddr,
1668 length, PCI_DMA_FROMDEVICE);
1670 struct sk_buff *nskb;
1672 nskb = dev_alloc_skb(bufsize);
1678 pci_unmap_single(sky2->hw->pdev, re->mapaddr,
1679 re->maplen, PCI_DMA_FROMDEVICE);
1680 prefetch(skb->data);
1682 re->mapaddr = pci_map_single(sky2->hw->pdev, nskb->data,
1683 bufsize, PCI_DMA_FROMDEVICE);
1684 re->maplen = bufsize;
1687 skb_put(skb, length);
1689 re->skb->ip_summed = CHECKSUM_NONE;
1690 sky2_rx_add(sky2, re);
1692 /* Tell receiver about new buffers. */
1693 sky2_put_idx(sky2->hw, rxqaddr[sky2->port], sky2->rx_put,
1694 &sky2->rx_last_put, RX_LE_SIZE);
1699 if (netif_msg_rx_err(sky2))
1700 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
1701 sky2->netdev->name, status, length);
1703 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
1704 sky2->net_stats.rx_length_errors++;
1705 if (status & GMR_FS_FRAGMENT)
1706 sky2->net_stats.rx_frame_errors++;
1707 if (status & GMR_FS_CRC_ERR)
1708 sky2->net_stats.rx_crc_errors++;
1709 if (status & GMR_FS_RX_FF_OV)
1710 sky2->net_stats.rx_fifo_errors++;
1716 * Check for transmit complete
1718 static inline void sky2_tx_check(struct sky2_hw *hw, int port)
1720 struct net_device *dev = hw->dev[port];
1722 if (dev && netif_running(dev)) {
1723 sky2_tx_complete(netdev_priv(dev),
1724 sky2_read16(hw, port == 0
1725 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX));
1730 * Both ports share the same status interrupt, therefore there is only
1733 static int sky2_poll(struct net_device *dev0, int *budget)
1735 struct sky2_hw *hw = ((struct sky2_port *) netdev_priv(dev0))->hw;
1736 unsigned int to_do = min(dev0->quota, *budget);
1737 unsigned int work_done = 0;
1740 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
1741 hwidx = sky2_read16(hw, STAT_PUT_IDX);
1742 BUG_ON(hwidx >= STATUS_RING_SIZE);
1745 while (hwidx != hw->st_idx) {
1746 struct sky2_status_le *le = hw->st_le + hw->st_idx;
1747 struct net_device *dev;
1748 struct sky2_port *sky2;
1749 struct sk_buff *skb;
1754 le = hw->st_le + hw->st_idx;
1755 hw->st_idx = (hw->st_idx + 1) % STATUS_RING_SIZE;
1756 prefetch(hw->st_le + hw->st_idx);
1758 BUG_ON(le->link >= hw->ports || !hw->dev[le->link]);
1760 BUG_ON(le->link >= 2);
1761 dev = hw->dev[le->link];
1762 if (dev == NULL || !netif_running(dev))
1765 sky2 = netdev_priv(dev);
1766 status = le32_to_cpu(le->status);
1767 length = le16_to_cpu(le->length);
1768 op = le->opcode & ~HW_OWNER;
1773 skb = sky2_receive(sky2, length, status);
1778 skb->protocol = eth_type_trans(skb, dev);
1779 dev->last_rx = jiffies;
1781 #ifdef SKY2_VLAN_TAG_USED
1782 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
1783 vlan_hwaccel_receive_skb(skb,
1785 be16_to_cpu(sky2->rx_tag));
1788 netif_receive_skb(skb);
1790 if (++work_done >= to_do)
1794 #ifdef SKY2_VLAN_TAG_USED
1796 sky2->rx_tag = length;
1800 sky2->rx_tag = length;
1804 skb = sky2->rx_ring[sky2->rx_next].skb;
1805 skb->ip_summed = CHECKSUM_HW;
1806 skb->csum = le16_to_cpu(status);
1810 /* pick up transmit status later */
1814 if (net_ratelimit())
1815 printk(KERN_WARNING PFX
1816 "unknown status opcode 0x%x\n", op);
1822 sky2_tx_check(hw, 0);
1823 sky2_tx_check(hw, 1);
1827 if (work_done < to_do) {
1829 * Another chip workaround, need to restart TX timer if status
1830 * LE was handled. WA_DEV_43_418
1833 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
1834 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
1837 netif_rx_complete(dev0);
1838 hw->intr_mask |= Y2_IS_STAT_BMU;
1839 sky2_write32(hw, B0_IMSK, hw->intr_mask);
1843 *budget -= work_done;
1844 dev0->quota -= work_done;
1849 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
1851 struct net_device *dev = hw->dev[port];
1853 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
1856 if (status & Y2_IS_PAR_RD1) {
1857 printk(KERN_ERR PFX "%s: ram data read parity error\n",
1860 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
1863 if (status & Y2_IS_PAR_WR1) {
1864 printk(KERN_ERR PFX "%s: ram data write parity error\n",
1867 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
1870 if (status & Y2_IS_PAR_MAC1) {
1871 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
1872 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
1875 if (status & Y2_IS_PAR_RX1) {
1876 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
1877 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
1880 if (status & Y2_IS_TCP_TXA1) {
1881 printk(KERN_ERR PFX "%s: TCP segmentation error\n", dev->name);
1882 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
1886 static void sky2_hw_intr(struct sky2_hw *hw)
1888 u32 status = sky2_read32(hw, B0_HWE_ISRC);
1890 if (status & Y2_IS_TIST_OV)
1891 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
1893 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
1896 pci_read_config_word(hw->pdev, PCI_STATUS, &pci_err);
1897 printk(KERN_ERR PFX "%s: pci hw error (0x%x)\n",
1898 pci_name(hw->pdev), pci_err);
1900 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
1901 pci_write_config_word(hw->pdev, PCI_STATUS,
1902 pci_err | PCI_STATUS_ERROR_BITS);
1903 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
1906 if (status & Y2_IS_PCI_EXP) {
1907 /* PCI-Express uncorrectable Error occurred */
1910 pci_read_config_dword(hw->pdev, PEX_UNC_ERR_STAT, &pex_err);
1912 printk(KERN_ERR PFX "%s: pci express error (0x%x)\n",
1913 pci_name(hw->pdev), pex_err);
1915 /* clear the interrupt */
1916 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
1917 pci_write_config_dword(hw->pdev, PEX_UNC_ERR_STAT,
1919 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
1921 if (pex_err & PEX_FATAL_ERRORS) {
1922 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
1923 hwmsk &= ~Y2_IS_PCI_EXP;
1924 sky2_write32(hw, B0_HWE_IMSK, hwmsk);
1928 if (status & Y2_HWE_L1_MASK)
1929 sky2_hw_error(hw, 0, status);
1931 if (status & Y2_HWE_L1_MASK)
1932 sky2_hw_error(hw, 1, status);
1935 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
1937 struct net_device *dev = hw->dev[port];
1938 struct sky2_port *sky2 = netdev_priv(dev);
1939 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
1941 if (netif_msg_intr(sky2))
1942 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
1945 if (status & GM_IS_RX_FF_OR) {
1946 ++sky2->net_stats.rx_fifo_errors;
1947 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
1950 if (status & GM_IS_TX_FF_UR) {
1951 ++sky2->net_stats.tx_fifo_errors;
1952 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
1956 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
1958 struct net_device *dev = hw->dev[port];
1959 struct sky2_port *sky2 = netdev_priv(dev);
1961 hw->intr_mask &= ~(port == 0 ? Y2_IS_IRQ_PHY1 : Y2_IS_IRQ_PHY2);
1962 sky2_write32(hw, B0_IMSK, hw->intr_mask);
1963 tasklet_schedule(&sky2->phy_task);
1966 static irqreturn_t sky2_intr(int irq, void *dev_id, struct pt_regs *regs)
1968 struct sky2_hw *hw = dev_id;
1969 struct net_device *dev0 = hw->dev[0];
1972 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
1973 if (status == 0 || status == ~0)
1976 if (status & Y2_IS_HW_ERR)
1979 /* Do NAPI for Rx and Tx status */
1980 if (status & Y2_IS_STAT_BMU) {
1981 hw->intr_mask &= ~Y2_IS_STAT_BMU;
1982 sky2_write32(hw, B0_IMSK, hw->intr_mask);
1984 if (likely(__netif_rx_schedule_prep(dev0))) {
1985 prefetch(&hw->st_le[hw->st_idx]);
1986 __netif_rx_schedule(dev0);
1990 if (status & Y2_IS_IRQ_PHY1)
1991 sky2_phy_intr(hw, 0);
1993 if (status & Y2_IS_IRQ_PHY2)
1994 sky2_phy_intr(hw, 1);
1996 if (status & Y2_IS_IRQ_MAC1)
1997 sky2_mac_intr(hw, 0);
1999 if (status & Y2_IS_IRQ_MAC2)
2000 sky2_mac_intr(hw, 1);
2002 sky2_write32(hw, B0_Y2_SP_ICR, 2);
2004 sky2_read32(hw, B0_IMSK);
2009 #ifdef CONFIG_NET_POLL_CONTROLLER
2010 static void sky2_netpoll(struct net_device *dev)
2012 struct sky2_port *sky2 = netdev_priv(dev);
2014 sky2_intr(sky2->hw->pdev->irq, sky2->hw, NULL);
2018 /* Chip internal frequency for clock calculations */
2019 static inline u32 sky2_khz(const struct sky2_hw *hw)
2021 switch (hw->chip_id) {
2022 case CHIP_ID_YUKON_EC:
2023 case CHIP_ID_YUKON_EC_U:
2024 return 125000; /* 125 Mhz */
2025 case CHIP_ID_YUKON_FE:
2026 return 100000; /* 100 Mhz */
2027 default: /* YUKON_XL */
2028 return 156000; /* 156 Mhz */
2032 static inline u32 sky2_ms2clk(const struct sky2_hw *hw, u32 ms)
2034 return sky2_khz(hw) * ms;
2037 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2039 return (sky2_khz(hw) * us) / 1000;
2042 static int sky2_reset(struct sky2_hw *hw)
2049 ctst = sky2_read32(hw, B0_CTST);
2051 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2052 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2053 if (hw->chip_id < CHIP_ID_YUKON_XL || hw->chip_id > CHIP_ID_YUKON_FE) {
2054 printk(KERN_ERR PFX "%s: unsupported chip type 0x%x\n",
2055 pci_name(hw->pdev), hw->chip_id);
2059 /* ring for status responses */
2060 hw->st_le = pci_alloc_consistent(hw->pdev, STATUS_LE_BYTES,
2066 if (hw->chip_id <= CHIP_ID_YUKON_EC) {
2067 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2068 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2072 sky2_write8(hw, B0_CTST, CS_RST_SET);
2073 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2075 /* clear PCI errors, if any */
2076 pci_read_config_word(hw->pdev, PCI_STATUS, &status);
2077 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2078 pci_write_config_word(hw->pdev, PCI_STATUS,
2079 status | PCI_STATUS_ERROR_BITS);
2081 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2083 /* clear any PEX errors */
2086 pci_write_config_dword(hw->pdev, PEX_UNC_ERR_STAT,
2088 pci_read_config_word(hw->pdev, PEX_LNK_STAT, &lstat);
2091 pmd_type = sky2_read8(hw, B2_PMD_TYP);
2092 hw->copper = !(pmd_type == 'L' || pmd_type == 'S');
2095 t8 = sky2_read8(hw, B2_Y2_HW_RES);
2096 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
2097 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2100 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2102 sky2_set_power_state(hw, PCI_D0);
2104 for (i = 0; i < hw->ports; i++) {
2105 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2106 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2109 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2111 /* Clear I2C IRQ noise */
2112 sky2_write32(hw, B2_I2C_IRQ, 1);
2114 /* turn off hardware timer (unused) */
2115 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2116 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
2118 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
2120 /* Turn on descriptor polling (every 75us) */
2121 sky2_write32(hw, B28_DPT_INI, sky2_us2clk(hw, 75));
2122 sky2_write8(hw, B28_DPT_CTRL, DPT_START);
2124 /* Turn off receive timestamp */
2125 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
2126 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2128 /* enable the Tx Arbiters */
2129 for (i = 0; i < hw->ports; i++)
2130 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
2132 /* Initialize ram interface */
2133 for (i = 0; i < hw->ports; i++) {
2134 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
2136 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
2137 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
2138 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
2139 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
2140 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
2141 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
2142 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
2143 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
2144 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
2145 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
2146 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
2147 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
2150 sky2_write32(hw, B0_HWE_IMSK, Y2_HWE_ALL_MASK);
2152 spin_lock_bh(&hw->phy_lock);
2153 for (i = 0; i < hw->ports; i++)
2154 sky2_phy_reset(hw, i);
2155 spin_unlock_bh(&hw->phy_lock);
2157 memset(hw->st_le, 0, STATUS_LE_BYTES);
2160 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
2161 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
2163 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
2164 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
2166 /* Set the list last index */
2167 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
2169 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_ms2clk(hw, 10));
2171 /* These status setup values are copied from SysKonnect's driver */
2173 /* WA for dev. #4.3 */
2174 sky2_write16(hw, STAT_TX_IDX_TH, 0xfff); /* Tx Threshold */
2176 /* set Status-FIFO watermark */
2177 sky2_write8(hw, STAT_FIFO_WM, 0x21); /* WA for dev. #4.18 */
2179 /* set Status-FIFO ISR watermark */
2180 sky2_write8(hw, STAT_FIFO_ISR_WM, 0x07); /* WA for dev. #4.18 */
2183 sky2_write16(hw, STAT_TX_IDX_TH, 0x000a);
2185 /* set Status-FIFO watermark */
2186 sky2_write8(hw, STAT_FIFO_WM, 0x10);
2188 /* set Status-FIFO ISR watermark */
2189 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
2190 sky2_write8(hw, STAT_FIFO_ISR_WM, 0x10);
2192 else /* WA dev 4.109 */
2193 sky2_write8(hw, STAT_FIFO_ISR_WM, 0x04);
2195 sky2_write32(hw, STAT_ISR_TIMER_INI, 0x0190);
2198 /* enable status unit */
2199 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
2201 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2202 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2203 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2208 static inline u32 sky2_supported_modes(const struct sky2_hw *hw)
2212 modes = SUPPORTED_10baseT_Half
2213 | SUPPORTED_10baseT_Full
2214 | SUPPORTED_100baseT_Half
2215 | SUPPORTED_100baseT_Full
2216 | SUPPORTED_Autoneg | SUPPORTED_TP;
2218 if (hw->chip_id != CHIP_ID_YUKON_FE)
2219 modes |= SUPPORTED_1000baseT_Half
2220 | SUPPORTED_1000baseT_Full;
2222 modes = SUPPORTED_1000baseT_Full | SUPPORTED_FIBRE
2223 | SUPPORTED_Autoneg;
2227 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2229 struct sky2_port *sky2 = netdev_priv(dev);
2230 struct sky2_hw *hw = sky2->hw;
2232 ecmd->transceiver = XCVR_INTERNAL;
2233 ecmd->supported = sky2_supported_modes(hw);
2234 ecmd->phy_address = PHY_ADDR_MARV;
2236 ecmd->supported = SUPPORTED_10baseT_Half
2237 | SUPPORTED_10baseT_Full
2238 | SUPPORTED_100baseT_Half
2239 | SUPPORTED_100baseT_Full
2240 | SUPPORTED_1000baseT_Half
2241 | SUPPORTED_1000baseT_Full
2242 | SUPPORTED_Autoneg | SUPPORTED_TP;
2243 ecmd->port = PORT_TP;
2245 ecmd->port = PORT_FIBRE;
2247 ecmd->advertising = sky2->advertising;
2248 ecmd->autoneg = sky2->autoneg;
2249 ecmd->speed = sky2->speed;
2250 ecmd->duplex = sky2->duplex;
2254 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2256 struct sky2_port *sky2 = netdev_priv(dev);
2257 const struct sky2_hw *hw = sky2->hw;
2258 u32 supported = sky2_supported_modes(hw);
2260 if (ecmd->autoneg == AUTONEG_ENABLE) {
2261 ecmd->advertising = supported;
2267 switch (ecmd->speed) {
2269 if (ecmd->duplex == DUPLEX_FULL)
2270 setting = SUPPORTED_1000baseT_Full;
2271 else if (ecmd->duplex == DUPLEX_HALF)
2272 setting = SUPPORTED_1000baseT_Half;
2277 if (ecmd->duplex == DUPLEX_FULL)
2278 setting = SUPPORTED_100baseT_Full;
2279 else if (ecmd->duplex == DUPLEX_HALF)
2280 setting = SUPPORTED_100baseT_Half;
2286 if (ecmd->duplex == DUPLEX_FULL)
2287 setting = SUPPORTED_10baseT_Full;
2288 else if (ecmd->duplex == DUPLEX_HALF)
2289 setting = SUPPORTED_10baseT_Half;
2297 if ((setting & supported) == 0)
2300 sky2->speed = ecmd->speed;
2301 sky2->duplex = ecmd->duplex;
2304 sky2->autoneg = ecmd->autoneg;
2305 sky2->advertising = ecmd->advertising;
2307 if (netif_running(dev)) {
2315 static void sky2_get_drvinfo(struct net_device *dev,
2316 struct ethtool_drvinfo *info)
2318 struct sky2_port *sky2 = netdev_priv(dev);
2320 strcpy(info->driver, DRV_NAME);
2321 strcpy(info->version, DRV_VERSION);
2322 strcpy(info->fw_version, "N/A");
2323 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
2326 static const struct sky2_stat {
2327 char name[ETH_GSTRING_LEN];
2330 { "tx_bytes", GM_TXO_OK_HI },
2331 { "rx_bytes", GM_RXO_OK_HI },
2332 { "tx_broadcast", GM_TXF_BC_OK },
2333 { "rx_broadcast", GM_RXF_BC_OK },
2334 { "tx_multicast", GM_TXF_MC_OK },
2335 { "rx_multicast", GM_RXF_MC_OK },
2336 { "tx_unicast", GM_TXF_UC_OK },
2337 { "rx_unicast", GM_RXF_UC_OK },
2338 { "tx_mac_pause", GM_TXF_MPAUSE },
2339 { "rx_mac_pause", GM_RXF_MPAUSE },
2340 { "collisions", GM_TXF_SNG_COL },
2341 { "late_collision",GM_TXF_LAT_COL },
2342 { "aborted", GM_TXF_ABO_COL },
2343 { "multi_collisions", GM_TXF_MUL_COL },
2344 { "fifo_underrun", GM_TXE_FIFO_UR },
2345 { "fifo_overflow", GM_RXE_FIFO_OV },
2346 { "rx_toolong", GM_RXF_LNG_ERR },
2347 { "rx_jabber", GM_RXF_JAB_PKT },
2348 { "rx_runt", GM_RXE_FRAG },
2349 { "rx_too_long", GM_RXF_LNG_ERR },
2350 { "rx_fcs_error", GM_RXF_FCS_ERR },
2353 static u32 sky2_get_rx_csum(struct net_device *dev)
2355 struct sky2_port *sky2 = netdev_priv(dev);
2357 return sky2->rx_csum;
2360 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
2362 struct sky2_port *sky2 = netdev_priv(dev);
2364 sky2->rx_csum = data;
2366 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2367 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
2372 static u32 sky2_get_msglevel(struct net_device *netdev)
2374 struct sky2_port *sky2 = netdev_priv(netdev);
2375 return sky2->msg_enable;
2378 static int sky2_nway_reset(struct net_device *dev)
2380 struct sky2_port *sky2 = netdev_priv(dev);
2381 struct sky2_hw *hw = sky2->hw;
2383 if (sky2->autoneg != AUTONEG_ENABLE)
2386 netif_stop_queue(dev);
2388 spin_lock_irq(&hw->phy_lock);
2389 sky2_phy_reset(hw, sky2->port);
2390 sky2_phy_init(hw, sky2->port);
2391 spin_unlock_irq(&hw->phy_lock);
2396 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
2398 struct sky2_hw *hw = sky2->hw;
2399 unsigned port = sky2->port;
2402 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
2403 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
2404 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
2405 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
2407 for (i = 2; i < count; i++)
2408 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
2411 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
2413 struct sky2_port *sky2 = netdev_priv(netdev);
2414 sky2->msg_enable = value;
2417 static int sky2_get_stats_count(struct net_device *dev)
2419 return ARRAY_SIZE(sky2_stats);
2422 static void sky2_get_ethtool_stats(struct net_device *dev,
2423 struct ethtool_stats *stats, u64 * data)
2425 struct sky2_port *sky2 = netdev_priv(dev);
2427 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
2430 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
2434 switch (stringset) {
2436 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
2437 memcpy(data + i * ETH_GSTRING_LEN,
2438 sky2_stats[i].name, ETH_GSTRING_LEN);
2443 /* Use hardware MIB variables for critical path statistics and
2444 * transmit feedback not reported at interrupt.
2445 * Other errors are accounted for in interrupt handler.
2447 static struct net_device_stats *sky2_get_stats(struct net_device *dev)
2449 struct sky2_port *sky2 = netdev_priv(dev);
2452 sky2_phy_stats(sky2, data, ARRAY_SIZE(data));
2454 sky2->net_stats.tx_bytes = data[0];
2455 sky2->net_stats.rx_bytes = data[1];
2456 sky2->net_stats.tx_packets = data[2] + data[4] + data[6];
2457 sky2->net_stats.rx_packets = data[3] + data[5] + data[7];
2458 sky2->net_stats.multicast = data[5] + data[7];
2459 sky2->net_stats.collisions = data[10];
2460 sky2->net_stats.tx_aborted_errors = data[12];
2462 return &sky2->net_stats;
2465 static int sky2_set_mac_address(struct net_device *dev, void *p)
2467 struct sky2_port *sky2 = netdev_priv(dev);
2468 struct sockaddr *addr = p;
2471 if (!is_valid_ether_addr(addr->sa_data))
2472 return -EADDRNOTAVAIL;
2475 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
2476 memcpy_toio(sky2->hw->regs + B2_MAC_1 + sky2->port * 8,
2477 dev->dev_addr, ETH_ALEN);
2478 memcpy_toio(sky2->hw->regs + B2_MAC_2 + sky2->port * 8,
2479 dev->dev_addr, ETH_ALEN);
2480 if (dev->flags & IFF_UP)
2485 static void sky2_set_multicast(struct net_device *dev)
2487 struct sky2_port *sky2 = netdev_priv(dev);
2488 struct sky2_hw *hw = sky2->hw;
2489 unsigned port = sky2->port;
2490 struct dev_mc_list *list = dev->mc_list;
2494 memset(filter, 0, sizeof(filter));
2496 reg = gma_read16(hw, port, GM_RX_CTRL);
2497 reg |= GM_RXCR_UCF_ENA;
2499 if (dev->flags & IFF_PROMISC) /* promiscuous */
2500 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
2501 else if ((dev->flags & IFF_ALLMULTI) || dev->mc_count > 16) /* all multicast */
2502 memset(filter, 0xff, sizeof(filter));
2503 else if (dev->mc_count == 0) /* no multicast */
2504 reg &= ~GM_RXCR_MCF_ENA;
2507 reg |= GM_RXCR_MCF_ENA;
2509 for (i = 0; list && i < dev->mc_count; i++, list = list->next) {
2510 u32 bit = ether_crc(ETH_ALEN, list->dmi_addr) & 0x3f;
2511 filter[bit / 8] |= 1 << (bit % 8);
2515 gma_write16(hw, port, GM_MC_ADDR_H1,
2516 (u16) filter[0] | ((u16) filter[1] << 8));
2517 gma_write16(hw, port, GM_MC_ADDR_H2,
2518 (u16) filter[2] | ((u16) filter[3] << 8));
2519 gma_write16(hw, port, GM_MC_ADDR_H3,
2520 (u16) filter[4] | ((u16) filter[5] << 8));
2521 gma_write16(hw, port, GM_MC_ADDR_H4,
2522 (u16) filter[6] | ((u16) filter[7] << 8));
2524 gma_write16(hw, port, GM_RX_CTRL, reg);
2527 /* Can have one global because blinking is controlled by
2528 * ethtool and that is always under RTNL mutex
2530 static inline void sky2_led(struct sky2_hw *hw, unsigned port, int on)
2534 spin_lock_bh(&hw->phy_lock);
2535 switch (hw->chip_id) {
2536 case CHIP_ID_YUKON_XL:
2537 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2538 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2539 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
2540 on ? (PHY_M_LEDC_LOS_CTRL(1) |
2541 PHY_M_LEDC_INIT_CTRL(7) |
2542 PHY_M_LEDC_STA1_CTRL(7) |
2543 PHY_M_LEDC_STA0_CTRL(7))
2546 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2550 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
2551 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
2552 on ? PHY_M_LED_MO_DUP(MO_LED_ON) |
2553 PHY_M_LED_MO_10(MO_LED_ON) |
2554 PHY_M_LED_MO_100(MO_LED_ON) |
2555 PHY_M_LED_MO_1000(MO_LED_ON) |
2556 PHY_M_LED_MO_RX(MO_LED_ON)
2557 : PHY_M_LED_MO_DUP(MO_LED_OFF) |
2558 PHY_M_LED_MO_10(MO_LED_OFF) |
2559 PHY_M_LED_MO_100(MO_LED_OFF) |
2560 PHY_M_LED_MO_1000(MO_LED_OFF) |
2561 PHY_M_LED_MO_RX(MO_LED_OFF));
2564 spin_unlock_bh(&hw->phy_lock);
2567 /* blink LED's for finding board */
2568 static int sky2_phys_id(struct net_device *dev, u32 data)
2570 struct sky2_port *sky2 = netdev_priv(dev);
2571 struct sky2_hw *hw = sky2->hw;
2572 unsigned port = sky2->port;
2573 u16 ledctrl, ledover = 0;
2577 if (!data || data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ))
2578 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT);
2582 /* save initial values */
2583 spin_lock_bh(&hw->phy_lock);
2584 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2585 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2586 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2587 ledctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
2588 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2590 ledctrl = gm_phy_read(hw, port, PHY_MARV_LED_CTRL);
2591 ledover = gm_phy_read(hw, port, PHY_MARV_LED_OVER);
2593 spin_unlock_bh(&hw->phy_lock);
2596 sky2_led(hw, port, onoff);
2599 if (msleep_interruptible(250))
2600 break; /* interrupted */
2604 /* resume regularly scheduled programming */
2605 spin_lock_bh(&hw->phy_lock);
2606 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2607 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2608 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2609 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ledctrl);
2610 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2612 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
2613 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
2615 spin_unlock_bh(&hw->phy_lock);
2620 static void sky2_get_pauseparam(struct net_device *dev,
2621 struct ethtool_pauseparam *ecmd)
2623 struct sky2_port *sky2 = netdev_priv(dev);
2625 ecmd->tx_pause = sky2->tx_pause;
2626 ecmd->rx_pause = sky2->rx_pause;
2627 ecmd->autoneg = sky2->autoneg;
2630 static int sky2_set_pauseparam(struct net_device *dev,
2631 struct ethtool_pauseparam *ecmd)
2633 struct sky2_port *sky2 = netdev_priv(dev);
2636 sky2->autoneg = ecmd->autoneg;
2637 sky2->tx_pause = ecmd->tx_pause != 0;
2638 sky2->rx_pause = ecmd->rx_pause != 0;
2640 if (netif_running(dev)) {
2649 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2651 struct sky2_port *sky2 = netdev_priv(dev);
2653 wol->supported = WAKE_MAGIC;
2654 wol->wolopts = sky2->wol ? WAKE_MAGIC : 0;
2657 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2659 struct sky2_port *sky2 = netdev_priv(dev);
2660 struct sky2_hw *hw = sky2->hw;
2662 if (wol->wolopts != WAKE_MAGIC && wol->wolopts != 0)
2665 sky2->wol = wol->wolopts == WAKE_MAGIC;
2668 memcpy_toio(hw->regs + WOL_MAC_ADDR, dev->dev_addr, ETH_ALEN);
2670 sky2_write16(hw, WOL_CTRL_STAT,
2671 WOL_CTL_ENA_PME_ON_MAGIC_PKT |
2672 WOL_CTL_ENA_MAGIC_PKT_UNIT);
2674 sky2_write16(hw, WOL_CTRL_STAT, WOL_CTL_DEFAULT);
2680 static void sky2_get_ringparam(struct net_device *dev,
2681 struct ethtool_ringparam *ering)
2683 struct sky2_port *sky2 = netdev_priv(dev);
2685 ering->rx_max_pending = RX_MAX_PENDING;
2686 ering->rx_mini_max_pending = 0;
2687 ering->rx_jumbo_max_pending = 0;
2688 ering->tx_max_pending = TX_RING_SIZE - 1;
2690 ering->rx_pending = sky2->rx_pending;
2691 ering->rx_mini_pending = 0;
2692 ering->rx_jumbo_pending = 0;
2693 ering->tx_pending = sky2->tx_pending;
2696 static int sky2_set_ringparam(struct net_device *dev,
2697 struct ethtool_ringparam *ering)
2699 struct sky2_port *sky2 = netdev_priv(dev);
2702 if (ering->rx_pending > RX_MAX_PENDING ||
2703 ering->rx_pending < 8 ||
2704 ering->tx_pending < MAX_SKB_TX_LE ||
2705 ering->tx_pending > TX_RING_SIZE - 1)
2708 if (netif_running(dev))
2711 sky2->rx_pending = ering->rx_pending;
2712 sky2->tx_pending = ering->tx_pending;
2714 if (netif_running(dev))
2720 static int sky2_get_regs_len(struct net_device *dev)
2726 * Returns copy of control register region
2727 * Note: access to the RAM address register set will cause timeouts.
2729 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
2732 const struct sky2_port *sky2 = netdev_priv(dev);
2733 const void __iomem *io = sky2->hw->regs;
2735 BUG_ON(regs->len < B3_RI_WTO_R1);
2737 memset(p, 0, regs->len);
2739 memcpy_fromio(p, io, B3_RAM_ADDR);
2741 memcpy_fromio(p + B3_RI_WTO_R1,
2743 regs->len - B3_RI_WTO_R1);
2746 static struct ethtool_ops sky2_ethtool_ops = {
2747 .get_settings = sky2_get_settings,
2748 .set_settings = sky2_set_settings,
2749 .get_drvinfo = sky2_get_drvinfo,
2750 .get_msglevel = sky2_get_msglevel,
2751 .set_msglevel = sky2_set_msglevel,
2752 .nway_reset = sky2_nway_reset,
2753 .get_regs_len = sky2_get_regs_len,
2754 .get_regs = sky2_get_regs,
2755 .get_link = ethtool_op_get_link,
2756 .get_sg = ethtool_op_get_sg,
2757 .set_sg = ethtool_op_set_sg,
2758 .get_tx_csum = ethtool_op_get_tx_csum,
2759 .set_tx_csum = ethtool_op_set_tx_csum,
2760 .get_tso = ethtool_op_get_tso,
2761 .set_tso = ethtool_op_set_tso,
2762 .get_rx_csum = sky2_get_rx_csum,
2763 .set_rx_csum = sky2_set_rx_csum,
2764 .get_strings = sky2_get_strings,
2765 .get_ringparam = sky2_get_ringparam,
2766 .set_ringparam = sky2_set_ringparam,
2767 .get_pauseparam = sky2_get_pauseparam,
2768 .set_pauseparam = sky2_set_pauseparam,
2770 .get_wol = sky2_get_wol,
2771 .set_wol = sky2_set_wol,
2773 .phys_id = sky2_phys_id,
2774 .get_stats_count = sky2_get_stats_count,
2775 .get_ethtool_stats = sky2_get_ethtool_stats,
2776 .get_perm_addr = ethtool_op_get_perm_addr,
2779 /* Initialize network device */
2780 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
2781 unsigned port, int highmem)
2783 struct sky2_port *sky2;
2784 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
2787 printk(KERN_ERR "sky2 etherdev alloc failed");
2791 SET_MODULE_OWNER(dev);
2792 SET_NETDEV_DEV(dev, &hw->pdev->dev);
2793 dev->irq = hw->pdev->irq;
2794 dev->open = sky2_up;
2795 dev->stop = sky2_down;
2796 dev->do_ioctl = sky2_ioctl;
2797 dev->hard_start_xmit = sky2_xmit_frame;
2798 dev->get_stats = sky2_get_stats;
2799 dev->set_multicast_list = sky2_set_multicast;
2800 dev->set_mac_address = sky2_set_mac_address;
2801 dev->change_mtu = sky2_change_mtu;
2802 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
2803 dev->tx_timeout = sky2_tx_timeout;
2804 dev->watchdog_timeo = TX_WATCHDOG;
2806 dev->poll = sky2_poll;
2807 dev->weight = NAPI_WEIGHT;
2808 #ifdef CONFIG_NET_POLL_CONTROLLER
2809 dev->poll_controller = sky2_netpoll;
2812 sky2 = netdev_priv(dev);
2815 sky2->msg_enable = netif_msg_init(debug, default_msg);
2817 spin_lock_init(&sky2->tx_lock);
2818 /* Auto speed and flow control */
2819 sky2->autoneg = AUTONEG_ENABLE;
2824 sky2->advertising = sky2_supported_modes(hw);
2826 tasklet_init(&sky2->phy_task, sky2_phy_task, (unsigned long)sky2);
2827 sky2->tx_pending = TX_DEF_PENDING;
2828 sky2->rx_pending = is_ec_a1(hw) ? 8 : RX_DEF_PENDING;
2830 hw->dev[port] = dev;
2834 dev->features |= NETIF_F_LLTX;
2835 if (hw->chip_id != CHIP_ID_YUKON_EC_U)
2836 dev->features |= NETIF_F_TSO;
2838 dev->features |= NETIF_F_HIGHDMA;
2839 dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
2841 #ifdef SKY2_VLAN_TAG_USED
2842 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
2843 dev->vlan_rx_register = sky2_vlan_rx_register;
2844 dev->vlan_rx_kill_vid = sky2_vlan_rx_kill_vid;
2847 /* read the mac address */
2848 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
2849 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
2851 /* device is off until link detection */
2852 netif_carrier_off(dev);
2853 netif_stop_queue(dev);
2858 static inline void sky2_show_addr(struct net_device *dev)
2860 const struct sky2_port *sky2 = netdev_priv(dev);
2862 if (netif_msg_probe(sky2))
2863 printk(KERN_INFO PFX "%s: addr %02x:%02x:%02x:%02x:%02x:%02x\n",
2865 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
2866 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
2869 static int __devinit sky2_probe(struct pci_dev *pdev,
2870 const struct pci_device_id *ent)
2872 struct net_device *dev, *dev1 = NULL;
2874 int err, pm_cap, using_dac = 0;
2876 err = pci_enable_device(pdev);
2878 printk(KERN_ERR PFX "%s cannot enable PCI device\n",
2883 err = pci_request_regions(pdev, DRV_NAME);
2885 printk(KERN_ERR PFX "%s cannot obtain PCI resources\n",
2890 pci_set_master(pdev);
2892 /* Find power-management capability. */
2893 pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
2895 printk(KERN_ERR PFX "Cannot find PowerManagement capability, "
2898 goto err_out_free_regions;
2901 if (sizeof(dma_addr_t) > sizeof(u32)) {
2902 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
2908 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2910 printk(KERN_ERR PFX "%s no usable DMA configuration\n",
2912 goto err_out_free_regions;
2916 /* byte swap descriptors in hardware */
2920 pci_read_config_dword(pdev, PCI_DEV_REG2, ®);
2921 reg |= PCI_REV_DESC;
2922 pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
2927 hw = kmalloc(sizeof(*hw), GFP_KERNEL);
2929 printk(KERN_ERR PFX "%s: cannot allocate hardware struct\n",
2931 goto err_out_free_regions;
2934 memset(hw, 0, sizeof(*hw));
2936 spin_lock_init(&hw->phy_lock);
2938 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
2940 printk(KERN_ERR PFX "%s: cannot map device registers\n",
2942 goto err_out_free_hw;
2944 hw->pm_cap = pm_cap;
2946 err = sky2_reset(hw);
2948 goto err_out_iounmap;
2950 printk(KERN_INFO PFX "v%s addr 0x%lx irq %d Yukon-%s (0x%x) rev %d\n",
2951 DRV_VERSION, pci_resource_start(pdev, 0), pdev->irq,
2952 yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
2953 hw->chip_id, hw->chip_rev);
2955 dev = sky2_init_netdev(hw, 0, using_dac);
2957 goto err_out_free_pci;
2959 err = register_netdev(dev);
2961 printk(KERN_ERR PFX "%s: cannot register net device\n",
2963 goto err_out_free_netdev;
2966 sky2_show_addr(dev);
2968 if (hw->ports > 1 && (dev1 = sky2_init_netdev(hw, 1, using_dac))) {
2969 if (register_netdev(dev1) == 0)
2970 sky2_show_addr(dev1);
2972 /* Failure to register second port need not be fatal */
2973 printk(KERN_WARNING PFX
2974 "register of second port failed\n");
2980 err = request_irq(pdev->irq, sky2_intr, SA_SHIRQ, DRV_NAME, hw);
2982 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
2983 pci_name(pdev), pdev->irq);
2984 goto err_out_unregister;
2987 hw->intr_mask = Y2_IS_BASE;
2988 sky2_write32(hw, B0_IMSK, hw->intr_mask);
2990 pci_set_drvdata(pdev, hw);
2996 unregister_netdev(dev1);
2999 unregister_netdev(dev);
3000 err_out_free_netdev:
3003 sky2_write8(hw, B0_CTST, CS_RST_SET);
3004 pci_free_consistent(hw->pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3009 err_out_free_regions:
3010 pci_release_regions(pdev);
3011 pci_disable_device(pdev);
3016 static void __devexit sky2_remove(struct pci_dev *pdev)
3018 struct sky2_hw *hw = pci_get_drvdata(pdev);
3019 struct net_device *dev0, *dev1;
3027 unregister_netdev(dev1);
3028 unregister_netdev(dev0);
3030 sky2_write32(hw, B0_IMSK, 0);
3031 sky2_set_power_state(hw, PCI_D3hot);
3032 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
3033 sky2_write8(hw, B0_CTST, CS_RST_SET);
3034 sky2_read8(hw, B0_CTST);
3036 free_irq(pdev->irq, hw);
3037 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3038 pci_release_regions(pdev);
3039 pci_disable_device(pdev);
3047 pci_set_drvdata(pdev, NULL);
3051 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
3053 struct sky2_hw *hw = pci_get_drvdata(pdev);
3056 for (i = 0; i < 2; i++) {
3057 struct net_device *dev = hw->dev[i];
3060 if (!netif_running(dev))
3064 netif_device_detach(dev);
3068 return sky2_set_power_state(hw, pci_choose_state(pdev, state));
3071 static int sky2_resume(struct pci_dev *pdev)
3073 struct sky2_hw *hw = pci_get_drvdata(pdev);
3076 pci_restore_state(pdev);
3077 pci_enable_wake(pdev, PCI_D0, 0);
3078 sky2_set_power_state(hw, PCI_D0);
3082 for (i = 0; i < 2; i++) {
3083 struct net_device *dev = hw->dev[i];
3085 if (netif_running(dev)) {
3086 netif_device_attach(dev);
3095 static struct pci_driver sky2_driver = {
3097 .id_table = sky2_id_table,
3098 .probe = sky2_probe,
3099 .remove = __devexit_p(sky2_remove),
3101 .suspend = sky2_suspend,
3102 .resume = sky2_resume,
3106 static int __init sky2_init_module(void)
3108 return pci_register_driver(&sky2_driver);
3111 static void __exit sky2_cleanup_module(void)
3113 pci_unregister_driver(&sky2_driver);
3116 module_init(sky2_init_module);
3117 module_exit(sky2_cleanup_module);
3119 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
3120 MODULE_AUTHOR("Stephen Hemminger <shemminger@osdl.org>");
3121 MODULE_LICENSE("GPL");
3122 MODULE_VERSION(DRV_VERSION);