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.
26 #include <linux/crc32.h>
27 #include <linux/kernel.h>
28 #include <linux/version.h>
29 #include <linux/module.h>
30 #include <linux/netdevice.h>
31 #include <linux/dma-mapping.h>
32 #include <linux/etherdevice.h>
33 #include <linux/ethtool.h>
34 #include <linux/pci.h>
36 #include <linux/tcp.h>
38 #include <linux/delay.h>
39 #include <linux/workqueue.h>
40 #include <linux/if_vlan.h>
41 #include <linux/prefetch.h>
42 #include <linux/mii.h>
46 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
47 #define SKY2_VLAN_TAG_USED 1
52 #define DRV_NAME "sky2"
53 #define DRV_VERSION "1.7"
54 #define PFX DRV_NAME " "
57 * The Yukon II chipset takes 64 bit command blocks (called list elements)
58 * that are organized into three (receive, transmit, status) different rings
59 * similar to Tigon3. A transmit can require several elements;
60 * a receive requires one (or two if using 64 bit dma).
63 #define RX_LE_SIZE 512
64 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
65 #define RX_MAX_PENDING (RX_LE_SIZE/2 - 2)
66 #define RX_DEF_PENDING RX_MAX_PENDING
67 #define RX_SKB_ALIGN 8
68 #define RX_BUF_WRITE 16
70 #define TX_RING_SIZE 512
71 #define TX_DEF_PENDING (TX_RING_SIZE - 1)
72 #define TX_MIN_PENDING 64
73 #define MAX_SKB_TX_LE (4 + (sizeof(dma_addr_t)/sizeof(u32))*MAX_SKB_FRAGS)
75 #define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
76 #define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
77 #define ETH_JUMBO_MTU 9000
78 #define TX_WATCHDOG (5 * HZ)
79 #define NAPI_WEIGHT 64
80 #define PHY_RETRIES 1000
82 #define RING_NEXT(x,s) (((x)+1) & ((s)-1))
84 static const u32 default_msg =
85 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
86 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
87 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
89 static int debug = -1; /* defaults above */
90 module_param(debug, int, 0);
91 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
93 static int copybreak __read_mostly = 256;
94 module_param(copybreak, int, 0);
95 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
97 static int disable_msi = 0;
98 module_param(disable_msi, int, 0);
99 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
101 static int idle_timeout = 100;
102 module_param(idle_timeout, int, 0);
103 MODULE_PARM_DESC(idle_timeout, "Idle timeout workaround for lost interrupts (ms)");
105 static const struct pci_device_id sky2_id_table[] = {
106 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) },
107 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) },
108 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
109 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) },
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) },
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) },
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) },
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) },
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) },
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) },
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) },
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) },
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) },
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) },
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) },
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) },
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) },
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) },
125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) },
126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) },
127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4365) },
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) },
129 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) },
130 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) },
131 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4369) },
135 MODULE_DEVICE_TABLE(pci, sky2_id_table);
137 /* Avoid conditionals by using array */
138 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
139 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
140 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
142 /* This driver supports yukon2 chipset only */
143 static const char *yukon2_name[] = {
145 "EC Ultra", /* 0xb4 */
146 "UNKNOWN", /* 0xb5 */
151 /* Access to external PHY */
152 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
156 gma_write16(hw, port, GM_SMI_DATA, val);
157 gma_write16(hw, port, GM_SMI_CTRL,
158 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
160 for (i = 0; i < PHY_RETRIES; i++) {
161 if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
166 printk(KERN_WARNING PFX "%s: phy write timeout\n", hw->dev[port]->name);
170 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
174 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
175 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
177 for (i = 0; i < PHY_RETRIES; i++) {
178 if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL) {
179 *val = gma_read16(hw, port, GM_SMI_DATA);
189 static u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
193 if (__gm_phy_read(hw, port, reg, &v) != 0)
194 printk(KERN_WARNING PFX "%s: phy read timeout\n", hw->dev[port]->name);
198 static void sky2_set_power_state(struct sky2_hw *hw, pci_power_t state)
203 pr_debug("sky2_set_power_state %d\n", state);
204 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
206 power_control = sky2_pci_read16(hw, hw->pm_cap + PCI_PM_PMC);
207 vaux = (sky2_read16(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
208 (power_control & PCI_PM_CAP_PME_D3cold);
210 power_control = sky2_pci_read16(hw, hw->pm_cap + PCI_PM_CTRL);
212 power_control |= PCI_PM_CTRL_PME_STATUS;
213 power_control &= ~(PCI_PM_CTRL_STATE_MASK);
217 /* switch power to VCC (WA for VAUX problem) */
218 sky2_write8(hw, B0_POWER_CTRL,
219 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
221 /* disable Core Clock Division, */
222 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
224 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
225 /* enable bits are inverted */
226 sky2_write8(hw, B2_Y2_CLK_GATE,
227 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
228 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
229 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
231 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
233 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
236 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
237 reg1 = sky2_pci_read32(hw, PCI_DEV_REG4);
238 reg1 &= P_ASPM_CONTROL_MSK;
239 sky2_pci_write32(hw, PCI_DEV_REG4, reg1);
240 sky2_pci_write32(hw, PCI_DEV_REG5, 0);
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);
266 sky2_pci_write16(hw, hw->pm_cap + PCI_PM_CTRL, power_control);
267 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
270 static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
274 /* disable all GMAC IRQ's */
275 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
276 /* disable PHY IRQs */
277 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
279 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
280 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
281 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
282 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
284 reg = gma_read16(hw, port, GM_RX_CTRL);
285 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
286 gma_write16(hw, port, GM_RX_CTRL, reg);
289 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
291 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
292 u16 ctrl, ct1000, adv, pg, ledctrl, ledover;
294 if (sky2->autoneg == AUTONEG_ENABLE &&
295 !(hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)) {
296 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
298 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
300 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
302 if (hw->chip_id == CHIP_ID_YUKON_EC)
303 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
305 ectrl |= PHY_M_EC_M_DSC(2) | PHY_M_EC_S_DSC(3);
307 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
310 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
312 if (hw->chip_id == CHIP_ID_YUKON_FE) {
313 /* enable automatic crossover */
314 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
316 /* disable energy detect */
317 ctrl &= ~PHY_M_PC_EN_DET_MSK;
319 /* enable automatic crossover */
320 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
322 if (sky2->autoneg == AUTONEG_ENABLE &&
323 (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)) {
324 ctrl &= ~PHY_M_PC_DSC_MSK;
325 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
328 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
330 /* workaround for deviation #4.88 (CRC errors) */
331 /* disable Automatic Crossover */
333 ctrl &= ~PHY_M_PC_MDIX_MSK;
334 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
336 if (hw->chip_id == CHIP_ID_YUKON_XL) {
337 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
338 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
339 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
340 ctrl &= ~PHY_M_MAC_MD_MSK;
341 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
342 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
344 /* select page 1 to access Fiber registers */
345 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
349 ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
350 if (sky2->autoneg == AUTONEG_DISABLE)
355 ctrl |= PHY_CT_RESET;
356 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
362 if (sky2->autoneg == AUTONEG_ENABLE) {
364 if (sky2->advertising & ADVERTISED_1000baseT_Full)
365 ct1000 |= PHY_M_1000C_AFD;
366 if (sky2->advertising & ADVERTISED_1000baseT_Half)
367 ct1000 |= PHY_M_1000C_AHD;
368 if (sky2->advertising & ADVERTISED_100baseT_Full)
369 adv |= PHY_M_AN_100_FD;
370 if (sky2->advertising & ADVERTISED_100baseT_Half)
371 adv |= PHY_M_AN_100_HD;
372 if (sky2->advertising & ADVERTISED_10baseT_Full)
373 adv |= PHY_M_AN_10_FD;
374 if (sky2->advertising & ADVERTISED_10baseT_Half)
375 adv |= PHY_M_AN_10_HD;
376 } else /* special defines for FIBER (88E1011S only) */
377 adv |= PHY_M_AN_1000X_AHD | PHY_M_AN_1000X_AFD;
379 /* Set Flow-control capabilities */
380 if (sky2->tx_pause && sky2->rx_pause)
381 adv |= PHY_AN_PAUSE_CAP; /* symmetric */
382 else if (sky2->rx_pause && !sky2->tx_pause)
383 adv |= PHY_AN_PAUSE_ASYM | PHY_AN_PAUSE_CAP;
384 else if (!sky2->rx_pause && sky2->tx_pause)
385 adv |= PHY_AN_PAUSE_ASYM; /* local */
387 /* Restart Auto-negotiation */
388 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
390 /* forced speed/duplex settings */
391 ct1000 = PHY_M_1000C_MSE;
393 if (sky2->duplex == DUPLEX_FULL)
394 ctrl |= PHY_CT_DUP_MD;
396 switch (sky2->speed) {
398 ctrl |= PHY_CT_SP1000;
401 ctrl |= PHY_CT_SP100;
405 ctrl |= PHY_CT_RESET;
408 if (hw->chip_id != CHIP_ID_YUKON_FE)
409 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
411 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
412 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
414 /* Setup Phy LED's */
415 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
418 switch (hw->chip_id) {
419 case CHIP_ID_YUKON_FE:
420 /* on 88E3082 these bits are at 11..9 (shifted left) */
421 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
423 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
425 /* delete ACT LED control bits */
426 ctrl &= ~PHY_M_FELP_LED1_MSK;
427 /* change ACT LED control to blink mode */
428 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
429 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
432 case CHIP_ID_YUKON_XL:
433 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
435 /* select page 3 to access LED control register */
436 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
438 /* set LED Function Control register */
439 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
440 (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);
457 case CHIP_ID_YUKON_EC_U:
458 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
460 /* select page 3 to access LED control register */
461 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
463 /* set LED Function Control register */
464 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
465 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
466 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
467 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
468 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
470 /* set Blink Rate in LED Timer Control Register */
471 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
472 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
473 /* restore page register */
474 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
478 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
479 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
480 /* turn off the Rx LED (LED_RX) */
481 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
484 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev == CHIP_REV_YU_EC_A1) {
485 /* apply fixes in PHY AFE */
486 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
487 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
489 /* increase differential signal amplitude in 10BASE-T */
490 gm_phy_write(hw, port, 0x18, 0xaa99);
491 gm_phy_write(hw, port, 0x17, 0x2011);
493 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
494 gm_phy_write(hw, port, 0x18, 0xa204);
495 gm_phy_write(hw, port, 0x17, 0x2002);
497 /* set page register to 0 */
498 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
500 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
502 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
503 /* turn on 100 Mbps LED (LED_LINK100) */
504 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
508 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
511 /* Enable phy interrupt on auto-negotiation complete (or link up) */
512 if (sky2->autoneg == AUTONEG_ENABLE)
513 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
515 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
518 static void sky2_phy_power(struct sky2_hw *hw, unsigned port, int onoff)
521 static const u32 phy_power[]
522 = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
524 /* looks like this XL is back asswards .. */
525 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
528 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
531 /* Turn off phy power saving */
532 reg1 &= ~phy_power[port];
534 reg1 |= phy_power[port];
536 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
537 sky2_pci_read32(hw, PCI_DEV_REG1);
541 /* Force a renegotiation */
542 static void sky2_phy_reinit(struct sky2_port *sky2)
544 spin_lock_bh(&sky2->phy_lock);
545 sky2_phy_init(sky2->hw, sky2->port);
546 spin_unlock_bh(&sky2->phy_lock);
549 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
551 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
554 const u8 *addr = hw->dev[port]->dev_addr;
556 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
557 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR|GPC_ENA_PAUSE);
559 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
561 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
562 /* WA DEV_472 -- looks like crossed wires on port 2 */
563 /* clear GMAC 1 Control reset */
564 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
566 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
567 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
568 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
569 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
570 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
573 if (sky2->autoneg == AUTONEG_DISABLE) {
574 reg = gma_read16(hw, port, GM_GP_CTRL);
575 reg |= GM_GPCR_AU_ALL_DIS;
576 gma_write16(hw, port, GM_GP_CTRL, reg);
577 gma_read16(hw, port, GM_GP_CTRL);
579 switch (sky2->speed) {
581 reg &= ~GM_GPCR_SPEED_100;
582 reg |= GM_GPCR_SPEED_1000;
585 reg &= ~GM_GPCR_SPEED_1000;
586 reg |= GM_GPCR_SPEED_100;
589 reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
593 if (sky2->duplex == DUPLEX_FULL)
594 reg |= GM_GPCR_DUP_FULL;
596 /* turn off pause in 10/100mbps half duplex */
597 else if (sky2->speed != SPEED_1000 &&
598 hw->chip_id != CHIP_ID_YUKON_EC_U)
599 sky2->tx_pause = sky2->rx_pause = 0;
601 reg = GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100 | GM_GPCR_DUP_FULL;
603 if (!sky2->tx_pause && !sky2->rx_pause) {
604 sky2_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
606 GM_GPCR_FC_TX_DIS | GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
607 } else if (sky2->tx_pause && !sky2->rx_pause) {
608 /* disable Rx flow-control */
609 reg |= GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
612 gma_write16(hw, port, GM_GP_CTRL, reg);
614 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
616 spin_lock_bh(&sky2->phy_lock);
617 sky2_phy_init(hw, port);
618 spin_unlock_bh(&sky2->phy_lock);
621 reg = gma_read16(hw, port, GM_PHY_ADDR);
622 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
624 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
625 gma_read16(hw, port, i);
626 gma_write16(hw, port, GM_PHY_ADDR, reg);
628 /* transmit control */
629 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
631 /* receive control reg: unicast + multicast + no FCS */
632 gma_write16(hw, port, GM_RX_CTRL,
633 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
635 /* transmit flow control */
636 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
638 /* transmit parameter */
639 gma_write16(hw, port, GM_TX_PARAM,
640 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
641 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
642 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
643 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
645 /* serial mode register */
646 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
647 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
649 if (hw->dev[port]->mtu > ETH_DATA_LEN)
650 reg |= GM_SMOD_JUMBO_ENA;
652 gma_write16(hw, port, GM_SERIAL_MODE, reg);
654 /* virtual address for data */
655 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
657 /* physical address: used for pause frames */
658 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
660 /* ignore counter overflows */
661 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
662 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
663 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
665 /* Configure Rx MAC FIFO */
666 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
667 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
668 GMF_OPER_ON | GMF_RX_F_FL_ON);
670 /* Flush Rx MAC FIFO on any flow control or error */
671 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
673 /* Set threshold to 0xa (64 bytes)
674 * ASF disabled so no need to do WA dev #4.30
676 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF);
678 /* Configure Tx MAC FIFO */
679 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
680 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
682 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
683 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
684 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
685 if (hw->dev[port]->mtu > ETH_DATA_LEN) {
686 /* set Tx GMAC FIFO Almost Empty Threshold */
687 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR), 0x180);
688 /* Disable Store & Forward mode for TX */
689 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
695 /* Assign Ram Buffer allocation.
696 * start and end are in units of 4k bytes
697 * ram registers are in units of 64bit words
699 static void sky2_ramset(struct sky2_hw *hw, u16 q, u8 startk, u8 endk)
703 start = startk * 4096/8;
704 end = (endk * 4096/8) - 1;
706 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
707 sky2_write32(hw, RB_ADDR(q, RB_START), start);
708 sky2_write32(hw, RB_ADDR(q, RB_END), end);
709 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
710 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
712 if (q == Q_R1 || q == Q_R2) {
713 u32 space = (endk - startk) * 4096/8;
714 u32 tp = space - space/4;
716 /* On receive queue's set the thresholds
717 * give receiver priority when > 3/4 full
718 * send pause when down to 2K
720 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
721 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
724 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
725 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
727 /* Enable store & forward on Tx queue's because
728 * Tx FIFO is only 1K on Yukon
730 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
733 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
734 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
737 /* Setup Bus Memory Interface */
738 static void sky2_qset(struct sky2_hw *hw, u16 q)
740 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
741 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
742 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
743 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
746 /* Setup prefetch unit registers. This is the interface between
747 * hardware and driver list elements
749 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
752 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
753 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
754 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
755 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
756 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
757 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
759 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
762 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
764 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
766 sky2->tx_prod = RING_NEXT(sky2->tx_prod, TX_RING_SIZE);
770 /* Update chip's next pointer */
771 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
773 q = Y2_QADDR(q, PREF_UNIT_PUT_IDX);
775 sky2_write16(hw, q, idx);
780 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
782 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
783 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
787 /* Return high part of DMA address (could be 32 or 64 bit) */
788 static inline u32 high32(dma_addr_t a)
790 return sizeof(a) > sizeof(u32) ? (a >> 16) >> 16 : 0;
793 /* Build description to hardware about buffer */
794 static void sky2_rx_add(struct sky2_port *sky2, dma_addr_t map)
796 struct sky2_rx_le *le;
797 u32 hi = high32(map);
798 u16 len = sky2->rx_bufsize;
800 if (sky2->rx_addr64 != hi) {
801 le = sky2_next_rx(sky2);
802 le->addr = cpu_to_le32(hi);
804 le->opcode = OP_ADDR64 | HW_OWNER;
805 sky2->rx_addr64 = high32(map + len);
808 le = sky2_next_rx(sky2);
809 le->addr = cpu_to_le32((u32) map);
810 le->length = cpu_to_le16(len);
812 le->opcode = OP_PACKET | HW_OWNER;
816 /* Tell chip where to start receive checksum.
817 * Actually has two checksums, but set both same to avoid possible byte
820 static void rx_set_checksum(struct sky2_port *sky2)
822 struct sky2_rx_le *le;
824 le = sky2_next_rx(sky2);
825 le->addr = (ETH_HLEN << 16) | ETH_HLEN;
827 le->opcode = OP_TCPSTART | HW_OWNER;
829 sky2_write32(sky2->hw,
830 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
831 sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
836 * The RX Stop command will not work for Yukon-2 if the BMU does not
837 * reach the end of packet and since we can't make sure that we have
838 * incoming data, we must reset the BMU while it is not doing a DMA
839 * transfer. Since it is possible that the RX path is still active,
840 * the RX RAM buffer will be stopped first, so any possible incoming
841 * data will not trigger a DMA. After the RAM buffer is stopped, the
842 * BMU is polled until any DMA in progress is ended and only then it
845 static void sky2_rx_stop(struct sky2_port *sky2)
847 struct sky2_hw *hw = sky2->hw;
848 unsigned rxq = rxqaddr[sky2->port];
851 /* disable the RAM Buffer receive queue */
852 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
854 for (i = 0; i < 0xffff; i++)
855 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
856 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
859 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
862 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
864 /* reset the Rx prefetch unit */
865 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
868 /* Clean out receive buffer area, assumes receiver hardware stopped */
869 static void sky2_rx_clean(struct sky2_port *sky2)
873 memset(sky2->rx_le, 0, RX_LE_BYTES);
874 for (i = 0; i < sky2->rx_pending; i++) {
875 struct ring_info *re = sky2->rx_ring + i;
878 pci_unmap_single(sky2->hw->pdev,
879 re->mapaddr, sky2->rx_bufsize,
887 /* Basic MII support */
888 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
890 struct mii_ioctl_data *data = if_mii(ifr);
891 struct sky2_port *sky2 = netdev_priv(dev);
892 struct sky2_hw *hw = sky2->hw;
893 int err = -EOPNOTSUPP;
895 if (!netif_running(dev))
896 return -ENODEV; /* Phy still in reset */
900 data->phy_id = PHY_ADDR_MARV;
906 spin_lock_bh(&sky2->phy_lock);
907 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
908 spin_unlock_bh(&sky2->phy_lock);
915 if (!capable(CAP_NET_ADMIN))
918 spin_lock_bh(&sky2->phy_lock);
919 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
921 spin_unlock_bh(&sky2->phy_lock);
927 #ifdef SKY2_VLAN_TAG_USED
928 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
930 struct sky2_port *sky2 = netdev_priv(dev);
931 struct sky2_hw *hw = sky2->hw;
932 u16 port = sky2->port;
934 spin_lock_bh(&sky2->tx_lock);
936 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_ON);
937 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_ON);
940 spin_unlock_bh(&sky2->tx_lock);
943 static void sky2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
945 struct sky2_port *sky2 = netdev_priv(dev);
946 struct sky2_hw *hw = sky2->hw;
947 u16 port = sky2->port;
949 spin_lock_bh(&sky2->tx_lock);
951 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_OFF);
952 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_OFF);
954 sky2->vlgrp->vlan_devices[vid] = NULL;
956 spin_unlock_bh(&sky2->tx_lock);
961 * It appears the hardware has a bug in the FIFO logic that
962 * cause it to hang if the FIFO gets overrun and the receive buffer
963 * is not 64 byte aligned. The buffer returned from netdev_alloc_skb is
964 * aligned except if slab debugging is enabled.
966 static inline struct sk_buff *sky2_alloc_skb(struct net_device *dev,
972 skb = __netdev_alloc_skb(dev, length + RX_SKB_ALIGN, gfp_mask);
974 unsigned long p = (unsigned long) skb->data;
975 skb_reserve(skb, ALIGN(p, RX_SKB_ALIGN) - p);
982 * Allocate and setup receiver buffer pool.
983 * In case of 64 bit dma, there are 2X as many list elements
984 * available as ring entries
985 * and need to reserve one list element so we don't wrap around.
987 static int sky2_rx_start(struct sky2_port *sky2)
989 struct sky2_hw *hw = sky2->hw;
990 unsigned rxq = rxqaddr[sky2->port];
994 sky2->rx_put = sky2->rx_next = 0;
997 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev >= 2) {
998 /* MAC Rx RAM Read is controlled by hardware */
999 sky2_write32(hw, Q_ADDR(rxq, Q_F), F_M_RX_RAM_DIS);
1002 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1004 rx_set_checksum(sky2);
1005 for (i = 0; i < sky2->rx_pending; i++) {
1006 struct ring_info *re = sky2->rx_ring + i;
1008 re->skb = sky2_alloc_skb(sky2->netdev, sky2->rx_bufsize,
1013 re->mapaddr = pci_map_single(hw->pdev, re->skb->data,
1014 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
1015 sky2_rx_add(sky2, re->mapaddr);
1020 * The receiver hangs if it receives frames larger than the
1021 * packet buffer. As a workaround, truncate oversize frames, but
1022 * the register is limited to 9 bits, so if you do frames > 2052
1023 * you better get the MTU right!
1025 thresh = (sky2->rx_bufsize - 8) / sizeof(u32);
1027 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1029 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1030 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1034 /* Tell chip about available buffers */
1035 sky2_write16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX), sky2->rx_put);
1038 sky2_rx_clean(sky2);
1042 /* Bring up network interface. */
1043 static int sky2_up(struct net_device *dev)
1045 struct sky2_port *sky2 = netdev_priv(dev);
1046 struct sky2_hw *hw = sky2->hw;
1047 unsigned port = sky2->port;
1048 u32 ramsize, rxspace, imask;
1049 int cap, err = -ENOMEM;
1050 struct net_device *otherdev = hw->dev[sky2->port^1];
1053 * On dual port PCI-X card, there is an problem where status
1054 * can be received out of order due to split transactions
1056 if (otherdev && netif_running(otherdev) &&
1057 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1058 struct sky2_port *osky2 = netdev_priv(otherdev);
1061 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1062 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1063 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1069 if (netif_msg_ifup(sky2))
1070 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
1072 /* must be power of 2 */
1073 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1075 sizeof(struct sky2_tx_le),
1080 sky2->tx_ring = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info),
1084 sky2->tx_prod = sky2->tx_cons = 0;
1086 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1090 memset(sky2->rx_le, 0, RX_LE_BYTES);
1092 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct ring_info),
1097 sky2_phy_power(hw, port, 1);
1099 sky2_mac_init(hw, port);
1101 /* Determine available ram buffer space (in 4K blocks).
1102 * Note: not sure about the FE setting below yet
1104 if (hw->chip_id == CHIP_ID_YUKON_FE)
1107 ramsize = sky2_read8(hw, B2_E_0);
1109 /* Give transmitter one third (rounded up) */
1110 rxspace = ramsize - (ramsize + 2) / 3;
1112 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1113 sky2_ramset(hw, txqaddr[port], rxspace, ramsize);
1115 /* Make sure SyncQ is disabled */
1116 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1119 sky2_qset(hw, txqaddr[port]);
1121 /* Set almost empty threshold */
1122 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev == 1)
1123 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), 0x1a0);
1125 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1128 err = sky2_rx_start(sky2);
1132 /* Enable interrupts from phy/mac for port */
1133 imask = sky2_read32(hw, B0_IMSK);
1134 imask |= portirq_msk[port];
1135 sky2_write32(hw, B0_IMSK, imask);
1141 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1142 sky2->rx_le, sky2->rx_le_map);
1146 pci_free_consistent(hw->pdev,
1147 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1148 sky2->tx_le, sky2->tx_le_map);
1151 kfree(sky2->tx_ring);
1152 kfree(sky2->rx_ring);
1154 sky2->tx_ring = NULL;
1155 sky2->rx_ring = NULL;
1159 /* Modular subtraction in ring */
1160 static inline int tx_dist(unsigned tail, unsigned head)
1162 return (head - tail) & (TX_RING_SIZE - 1);
1165 /* Number of list elements available for next tx */
1166 static inline int tx_avail(const struct sky2_port *sky2)
1168 return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
1171 /* Estimate of number of transmit list elements required */
1172 static unsigned tx_le_req(const struct sk_buff *skb)
1176 count = sizeof(dma_addr_t) / sizeof(u32);
1177 count += skb_shinfo(skb)->nr_frags * count;
1179 if (skb_is_gso(skb))
1182 if (skb->ip_summed == CHECKSUM_HW)
1189 * Put one packet in ring for transmit.
1190 * A single packet can generate multiple list elements, and
1191 * the number of ring elements will probably be less than the number
1192 * of list elements used.
1194 * No BH disabling for tx_lock here (like tg3)
1196 static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1198 struct sky2_port *sky2 = netdev_priv(dev);
1199 struct sky2_hw *hw = sky2->hw;
1200 struct sky2_tx_le *le = NULL;
1201 struct tx_ring_info *re;
1208 /* No BH disabling for tx_lock here. We are running in BH disabled
1209 * context and TX reclaim runs via poll inside of a software
1210 * interrupt, and no related locks in IRQ processing.
1212 if (!spin_trylock(&sky2->tx_lock))
1213 return NETDEV_TX_LOCKED;
1215 if (unlikely(tx_avail(sky2) < tx_le_req(skb))) {
1216 /* There is a known but harmless race with lockless tx
1217 * and netif_stop_queue.
1219 if (!netif_queue_stopped(dev)) {
1220 netif_stop_queue(dev);
1221 if (net_ratelimit())
1222 printk(KERN_WARNING PFX "%s: ring full when queue awake!\n",
1225 spin_unlock(&sky2->tx_lock);
1227 return NETDEV_TX_BUSY;
1230 if (unlikely(netif_msg_tx_queued(sky2)))
1231 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1232 dev->name, sky2->tx_prod, skb->len);
1234 len = skb_headlen(skb);
1235 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1236 addr64 = high32(mapping);
1238 re = sky2->tx_ring + sky2->tx_prod;
1240 /* Send high bits if changed or crosses boundary */
1241 if (addr64 != sky2->tx_addr64 || high32(mapping + len) != sky2->tx_addr64) {
1242 le = get_tx_le(sky2);
1243 le->tx.addr = cpu_to_le32(addr64);
1245 le->opcode = OP_ADDR64 | HW_OWNER;
1246 sky2->tx_addr64 = high32(mapping + len);
1249 /* Check for TCP Segmentation Offload */
1250 mss = skb_shinfo(skb)->gso_size;
1252 mss += ((skb->h.th->doff - 5) * 4); /* TCP options */
1253 mss += (skb->nh.iph->ihl * 4) + sizeof(struct tcphdr);
1256 if (mss != sky2->tx_last_mss) {
1257 le = get_tx_le(sky2);
1258 le->tx.tso.size = cpu_to_le16(mss);
1259 le->tx.tso.rsvd = 0;
1260 le->opcode = OP_LRGLEN | HW_OWNER;
1262 sky2->tx_last_mss = mss;
1267 #ifdef SKY2_VLAN_TAG_USED
1268 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1269 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1271 le = get_tx_le(sky2);
1273 le->opcode = OP_VLAN|HW_OWNER;
1276 le->opcode |= OP_VLAN;
1277 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1282 /* Handle TCP checksum offload */
1283 if (skb->ip_summed == CHECKSUM_HW) {
1284 u16 hdr = skb->h.raw - skb->data;
1285 u16 offset = hdr + skb->csum;
1287 ctrl = CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1288 if (skb->nh.iph->protocol == IPPROTO_UDP)
1291 if (hdr != sky2->tx_csum_start || offset != sky2->tx_csum_offset) {
1292 sky2->tx_csum_start = hdr;
1293 sky2->tx_csum_offset = offset;
1295 le = get_tx_le(sky2);
1296 le->tx.csum.start = cpu_to_le16(hdr);
1297 le->tx.csum.offset = cpu_to_le16(offset);
1298 le->length = 0; /* initial checksum value */
1299 le->ctrl = 1; /* one packet */
1300 le->opcode = OP_TCPLISW | HW_OWNER;
1304 le = get_tx_le(sky2);
1305 le->tx.addr = cpu_to_le32((u32) mapping);
1306 le->length = cpu_to_le16(len);
1308 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1310 /* Record the transmit mapping info */
1312 pci_unmap_addr_set(re, mapaddr, mapping);
1314 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1315 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1316 struct tx_ring_info *fre;
1318 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1319 frag->size, PCI_DMA_TODEVICE);
1320 addr64 = high32(mapping);
1321 if (addr64 != sky2->tx_addr64) {
1322 le = get_tx_le(sky2);
1323 le->tx.addr = cpu_to_le32(addr64);
1325 le->opcode = OP_ADDR64 | HW_OWNER;
1326 sky2->tx_addr64 = addr64;
1329 le = get_tx_le(sky2);
1330 le->tx.addr = cpu_to_le32((u32) mapping);
1331 le->length = cpu_to_le16(frag->size);
1333 le->opcode = OP_BUFFER | HW_OWNER;
1336 + RING_NEXT((re - sky2->tx_ring) + i, TX_RING_SIZE);
1337 pci_unmap_addr_set(fre, mapaddr, mapping);
1340 re->idx = sky2->tx_prod;
1343 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1344 netif_stop_queue(dev);
1346 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1348 spin_unlock(&sky2->tx_lock);
1350 dev->trans_start = jiffies;
1351 return NETDEV_TX_OK;
1355 * Free ring elements from starting at tx_cons until "done"
1357 * NB: the hardware will tell us about partial completion of multi-part
1358 * buffers; these are deferred until completion.
1360 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1362 struct net_device *dev = sky2->netdev;
1363 struct pci_dev *pdev = sky2->hw->pdev;
1367 BUG_ON(done >= TX_RING_SIZE);
1369 if (unlikely(netif_msg_tx_done(sky2)))
1370 printk(KERN_DEBUG "%s: tx done, up to %u\n",
1373 for (put = sky2->tx_cons; put != done; put = nxt) {
1374 struct tx_ring_info *re = sky2->tx_ring + put;
1375 struct sk_buff *skb = re->skb;
1378 BUG_ON(nxt >= TX_RING_SIZE);
1379 prefetch(sky2->tx_ring + nxt);
1381 /* Check for partial status */
1382 if (tx_dist(put, done) < tx_dist(put, nxt))
1386 pci_unmap_single(pdev, pci_unmap_addr(re, mapaddr),
1387 skb_headlen(skb), PCI_DMA_TODEVICE);
1389 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1390 struct tx_ring_info *fre;
1391 fre = sky2->tx_ring + RING_NEXT(put + i, TX_RING_SIZE);
1392 pci_unmap_page(pdev, pci_unmap_addr(fre, mapaddr),
1393 skb_shinfo(skb)->frags[i].size,
1400 sky2->tx_cons = put;
1401 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
1402 netif_wake_queue(dev);
1405 /* Cleanup all untransmitted buffers, assume transmitter not running */
1406 static void sky2_tx_clean(struct sky2_port *sky2)
1408 spin_lock_bh(&sky2->tx_lock);
1409 sky2_tx_complete(sky2, sky2->tx_prod);
1410 spin_unlock_bh(&sky2->tx_lock);
1413 /* Network shutdown */
1414 static int sky2_down(struct net_device *dev)
1416 struct sky2_port *sky2 = netdev_priv(dev);
1417 struct sky2_hw *hw = sky2->hw;
1418 unsigned port = sky2->port;
1422 /* Never really got started! */
1426 if (netif_msg_ifdown(sky2))
1427 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1429 /* Stop more packets from being queued */
1430 netif_stop_queue(dev);
1432 sky2_gmac_reset(hw, port);
1434 /* Stop transmitter */
1435 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1436 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1438 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1439 RB_RST_SET | RB_DIS_OP_MD);
1441 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1442 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1443 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1445 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1447 /* Workaround shared GMAC reset */
1448 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1449 && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1450 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1452 /* Disable Force Sync bit and Enable Alloc bit */
1453 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1454 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1456 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1457 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1458 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1460 /* Reset the PCI FIFO of the async Tx queue */
1461 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1462 BMU_RST_SET | BMU_FIFO_RST);
1464 /* Reset the Tx prefetch units */
1465 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1468 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1472 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1473 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1475 /* Disable port IRQ */
1476 imask = sky2_read32(hw, B0_IMSK);
1477 imask &= ~portirq_msk[port];
1478 sky2_write32(hw, B0_IMSK, imask);
1480 sky2_phy_power(hw, port, 0);
1482 /* turn off LED's */
1483 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1485 synchronize_irq(hw->pdev->irq);
1487 sky2_tx_clean(sky2);
1488 sky2_rx_clean(sky2);
1490 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1491 sky2->rx_le, sky2->rx_le_map);
1492 kfree(sky2->rx_ring);
1494 pci_free_consistent(hw->pdev,
1495 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1496 sky2->tx_le, sky2->tx_le_map);
1497 kfree(sky2->tx_ring);
1502 sky2->rx_ring = NULL;
1503 sky2->tx_ring = NULL;
1508 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1513 if (hw->chip_id == CHIP_ID_YUKON_FE)
1514 return (aux & PHY_M_PS_SPEED_100) ? SPEED_100 : SPEED_10;
1516 switch (aux & PHY_M_PS_SPEED_MSK) {
1517 case PHY_M_PS_SPEED_1000:
1519 case PHY_M_PS_SPEED_100:
1526 static void sky2_link_up(struct sky2_port *sky2)
1528 struct sky2_hw *hw = sky2->hw;
1529 unsigned port = sky2->port;
1532 /* Enable Transmit FIFO Underrun */
1533 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
1535 reg = gma_read16(hw, port, GM_GP_CTRL);
1536 if (sky2->autoneg == AUTONEG_DISABLE) {
1537 reg |= GM_GPCR_AU_ALL_DIS;
1539 /* Is write/read necessary? Copied from sky2_mac_init */
1540 gma_write16(hw, port, GM_GP_CTRL, reg);
1541 gma_read16(hw, port, GM_GP_CTRL);
1543 switch (sky2->speed) {
1545 reg &= ~GM_GPCR_SPEED_100;
1546 reg |= GM_GPCR_SPEED_1000;
1549 reg &= ~GM_GPCR_SPEED_1000;
1550 reg |= GM_GPCR_SPEED_100;
1553 reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
1557 reg &= ~GM_GPCR_AU_ALL_DIS;
1559 if (sky2->duplex == DUPLEX_FULL || sky2->autoneg == AUTONEG_ENABLE)
1560 reg |= GM_GPCR_DUP_FULL;
1563 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1564 gma_write16(hw, port, GM_GP_CTRL, reg);
1565 gma_read16(hw, port, GM_GP_CTRL);
1567 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1569 netif_carrier_on(sky2->netdev);
1570 netif_wake_queue(sky2->netdev);
1572 /* Turn on link LED */
1573 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1574 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1576 if (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U) {
1577 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
1578 u16 led = PHY_M_LEDC_LOS_CTRL(1); /* link active */
1580 switch(sky2->speed) {
1582 led |= PHY_M_LEDC_INIT_CTRL(7);
1586 led |= PHY_M_LEDC_STA1_CTRL(7);
1590 led |= PHY_M_LEDC_STA0_CTRL(7);
1594 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
1595 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, led);
1596 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
1599 if (netif_msg_link(sky2))
1600 printk(KERN_INFO PFX
1601 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1602 sky2->netdev->name, sky2->speed,
1603 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1604 (sky2->tx_pause && sky2->rx_pause) ? "both" :
1605 sky2->tx_pause ? "tx" : sky2->rx_pause ? "rx" : "none");
1608 static void sky2_link_down(struct sky2_port *sky2)
1610 struct sky2_hw *hw = sky2->hw;
1611 unsigned port = sky2->port;
1614 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1616 reg = gma_read16(hw, port, GM_GP_CTRL);
1617 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1618 gma_write16(hw, port, GM_GP_CTRL, reg);
1619 gma_read16(hw, port, GM_GP_CTRL); /* PCI post */
1621 if (sky2->rx_pause && !sky2->tx_pause) {
1622 /* restore Asymmetric Pause bit */
1623 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV,
1624 gm_phy_read(hw, port, PHY_MARV_AUNE_ADV)
1628 netif_carrier_off(sky2->netdev);
1629 netif_stop_queue(sky2->netdev);
1631 /* Turn on link LED */
1632 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1634 if (netif_msg_link(sky2))
1635 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
1636 sky2_phy_init(hw, port);
1639 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
1641 struct sky2_hw *hw = sky2->hw;
1642 unsigned port = sky2->port;
1645 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
1647 if (lpa & PHY_M_AN_RF) {
1648 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
1652 if (hw->chip_id != CHIP_ID_YUKON_FE &&
1653 gm_phy_read(hw, port, PHY_MARV_1000T_STAT) & PHY_B_1000S_MSF) {
1654 printk(KERN_ERR PFX "%s: master/slave fault",
1655 sky2->netdev->name);
1659 if (!(aux & PHY_M_PS_SPDUP_RES)) {
1660 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
1661 sky2->netdev->name);
1665 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1667 sky2->speed = sky2_phy_speed(hw, aux);
1669 /* Pause bits are offset (9..8) */
1670 if (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)
1673 sky2->rx_pause = (aux & PHY_M_PS_RX_P_EN) != 0;
1674 sky2->tx_pause = (aux & PHY_M_PS_TX_P_EN) != 0;
1676 if ((sky2->tx_pause || sky2->rx_pause)
1677 && !(sky2->speed < SPEED_1000 && sky2->duplex == DUPLEX_HALF))
1678 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
1680 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1685 /* Interrupt from PHY */
1686 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
1688 struct net_device *dev = hw->dev[port];
1689 struct sky2_port *sky2 = netdev_priv(dev);
1690 u16 istatus, phystat;
1692 spin_lock(&sky2->phy_lock);
1693 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
1694 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
1696 if (!netif_running(dev))
1699 if (netif_msg_intr(sky2))
1700 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
1701 sky2->netdev->name, istatus, phystat);
1703 if (istatus & PHY_M_IS_AN_COMPL) {
1704 if (sky2_autoneg_done(sky2, phystat) == 0)
1709 if (istatus & PHY_M_IS_LSP_CHANGE)
1710 sky2->speed = sky2_phy_speed(hw, phystat);
1712 if (istatus & PHY_M_IS_DUP_CHANGE)
1714 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1716 if (istatus & PHY_M_IS_LST_CHANGE) {
1717 if (phystat & PHY_M_PS_LINK_UP)
1720 sky2_link_down(sky2);
1723 spin_unlock(&sky2->phy_lock);
1727 /* Transmit timeout is only called if we are running, carries is up
1728 * and tx queue is full (stopped).
1730 static void sky2_tx_timeout(struct net_device *dev)
1732 struct sky2_port *sky2 = netdev_priv(dev);
1733 struct sky2_hw *hw = sky2->hw;
1734 unsigned txq = txqaddr[sky2->port];
1737 if (netif_msg_timer(sky2))
1738 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
1740 report = sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX);
1741 done = sky2_read16(hw, Q_ADDR(txq, Q_DONE));
1743 printk(KERN_DEBUG PFX "%s: transmit ring %u .. %u report=%u done=%u\n",
1745 sky2->tx_cons, sky2->tx_prod, report, done);
1747 if (report != done) {
1748 printk(KERN_INFO PFX "status burst pending (irq moderation?)\n");
1750 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
1751 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
1752 } else if (report != sky2->tx_cons) {
1753 printk(KERN_INFO PFX "status report lost?\n");
1755 spin_lock_bh(&sky2->tx_lock);
1756 sky2_tx_complete(sky2, report);
1757 spin_unlock_bh(&sky2->tx_lock);
1759 printk(KERN_INFO PFX "hardware hung? flushing\n");
1761 sky2_write32(hw, Q_ADDR(txq, Q_CSR), BMU_STOP);
1762 sky2_write32(hw, Y2_QADDR(txq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1764 sky2_tx_clean(sky2);
1767 sky2_prefetch_init(hw, txq, sky2->tx_le_map, TX_RING_SIZE - 1);
1772 /* Want receive buffer size to be multiple of 64 bits
1773 * and incl room for vlan and truncation
1775 static inline unsigned sky2_buf_size(int mtu)
1777 return ALIGN(mtu + ETH_HLEN + VLAN_HLEN, 8) + 8;
1780 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
1782 struct sky2_port *sky2 = netdev_priv(dev);
1783 struct sky2_hw *hw = sky2->hw;
1788 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
1791 if (hw->chip_id == CHIP_ID_YUKON_EC_U && new_mtu > ETH_DATA_LEN)
1794 if (!netif_running(dev)) {
1799 imask = sky2_read32(hw, B0_IMSK);
1800 sky2_write32(hw, B0_IMSK, 0);
1802 dev->trans_start = jiffies; /* prevent tx timeout */
1803 netif_stop_queue(dev);
1804 netif_poll_disable(hw->dev[0]);
1806 synchronize_irq(hw->pdev->irq);
1808 ctl = gma_read16(hw, sky2->port, GM_GP_CTRL);
1809 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
1811 sky2_rx_clean(sky2);
1814 sky2->rx_bufsize = sky2_buf_size(new_mtu);
1815 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
1816 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
1818 if (dev->mtu > ETH_DATA_LEN)
1819 mode |= GM_SMOD_JUMBO_ENA;
1821 gma_write16(hw, sky2->port, GM_SERIAL_MODE, mode);
1823 sky2_write8(hw, RB_ADDR(rxqaddr[sky2->port], RB_CTRL), RB_ENA_OP_MD);
1825 err = sky2_rx_start(sky2);
1826 sky2_write32(hw, B0_IMSK, imask);
1831 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl);
1833 netif_poll_enable(hw->dev[0]);
1834 netif_wake_queue(dev);
1841 * Receive one packet.
1842 * For small packets or errors, just reuse existing skb.
1843 * For larger packets, get new buffer.
1845 static struct sk_buff *sky2_receive(struct net_device *dev,
1846 u16 length, u32 status)
1848 struct sky2_port *sky2 = netdev_priv(dev);
1849 struct ring_info *re = sky2->rx_ring + sky2->rx_next;
1850 struct sk_buff *skb = NULL;
1852 if (unlikely(netif_msg_rx_status(sky2)))
1853 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
1854 dev->name, sky2->rx_next, status, length);
1856 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
1857 prefetch(sky2->rx_ring + sky2->rx_next);
1859 if (status & GMR_FS_ANY_ERR)
1862 if (!(status & GMR_FS_RX_OK))
1865 if (length > dev->mtu + ETH_HLEN)
1868 if (length < copybreak) {
1869 skb = netdev_alloc_skb(dev, length + 2);
1873 skb_reserve(skb, 2);
1874 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->mapaddr,
1875 length, PCI_DMA_FROMDEVICE);
1876 memcpy(skb->data, re->skb->data, length);
1877 skb->ip_summed = re->skb->ip_summed;
1878 skb->csum = re->skb->csum;
1879 pci_dma_sync_single_for_device(sky2->hw->pdev, re->mapaddr,
1880 length, PCI_DMA_FROMDEVICE);
1882 struct sk_buff *nskb;
1884 nskb = sky2_alloc_skb(dev, sky2->rx_bufsize, GFP_ATOMIC);
1890 pci_unmap_single(sky2->hw->pdev, re->mapaddr,
1891 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
1892 prefetch(skb->data);
1894 re->mapaddr = pci_map_single(sky2->hw->pdev, nskb->data,
1895 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
1898 skb_put(skb, length);
1900 re->skb->ip_summed = CHECKSUM_NONE;
1901 sky2_rx_add(sky2, re->mapaddr);
1906 ++sky2->net_stats.rx_over_errors;
1910 ++sky2->net_stats.rx_errors;
1912 if (netif_msg_rx_err(sky2) && net_ratelimit())
1913 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
1914 dev->name, status, length);
1916 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
1917 sky2->net_stats.rx_length_errors++;
1918 if (status & GMR_FS_FRAGMENT)
1919 sky2->net_stats.rx_frame_errors++;
1920 if (status & GMR_FS_CRC_ERR)
1921 sky2->net_stats.rx_crc_errors++;
1922 if (status & GMR_FS_RX_FF_OV)
1923 sky2->net_stats.rx_fifo_errors++;
1928 /* Transmit complete */
1929 static inline void sky2_tx_done(struct net_device *dev, u16 last)
1931 struct sky2_port *sky2 = netdev_priv(dev);
1933 if (netif_running(dev)) {
1934 spin_lock(&sky2->tx_lock);
1935 sky2_tx_complete(sky2, last);
1936 spin_unlock(&sky2->tx_lock);
1940 /* Process status response ring */
1941 static int sky2_status_intr(struct sky2_hw *hw, int to_do)
1943 struct sky2_port *sky2;
1945 unsigned buf_write[2] = { 0, 0 };
1946 u16 hwidx = sky2_read16(hw, STAT_PUT_IDX);
1950 while (hw->st_idx != hwidx) {
1951 struct sky2_status_le *le = hw->st_le + hw->st_idx;
1952 struct net_device *dev;
1953 struct sk_buff *skb;
1957 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
1959 BUG_ON(le->link >= 2);
1960 dev = hw->dev[le->link];
1962 sky2 = netdev_priv(dev);
1963 length = le->length;
1964 status = le->status;
1966 switch (le->opcode & ~HW_OWNER) {
1968 skb = sky2_receive(dev, length, status);
1972 skb->protocol = eth_type_trans(skb, dev);
1973 dev->last_rx = jiffies;
1975 #ifdef SKY2_VLAN_TAG_USED
1976 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
1977 vlan_hwaccel_receive_skb(skb,
1979 be16_to_cpu(sky2->rx_tag));
1982 netif_receive_skb(skb);
1984 /* Update receiver after 16 frames */
1985 if (++buf_write[le->link] == RX_BUF_WRITE) {
1986 sky2_put_idx(hw, rxqaddr[le->link],
1988 buf_write[le->link] = 0;
1991 /* Stop after net poll weight */
1992 if (++work_done >= to_do)
1996 #ifdef SKY2_VLAN_TAG_USED
1998 sky2->rx_tag = length;
2002 sky2->rx_tag = length;
2006 skb = sky2->rx_ring[sky2->rx_next].skb;
2007 skb->ip_summed = CHECKSUM_HW;
2008 skb->csum = le16_to_cpu(status);
2012 /* TX index reports status for both ports */
2013 BUILD_BUG_ON(TX_RING_SIZE > 0x1000);
2014 sky2_tx_done(hw->dev[0], status & 0xfff);
2016 sky2_tx_done(hw->dev[1],
2017 ((status >> 24) & 0xff)
2018 | (u16)(length & 0xf) << 8);
2022 if (net_ratelimit())
2023 printk(KERN_WARNING PFX
2024 "unknown status opcode 0x%x\n", le->opcode);
2029 /* Fully processed status ring so clear irq */
2030 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2034 sky2 = netdev_priv(hw->dev[0]);
2035 sky2_put_idx(hw, Q_R1, sky2->rx_put);
2039 sky2 = netdev_priv(hw->dev[1]);
2040 sky2_put_idx(hw, Q_R2, sky2->rx_put);
2046 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2048 struct net_device *dev = hw->dev[port];
2050 if (net_ratelimit())
2051 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
2054 if (status & Y2_IS_PAR_RD1) {
2055 if (net_ratelimit())
2056 printk(KERN_ERR PFX "%s: ram data read parity error\n",
2059 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2062 if (status & Y2_IS_PAR_WR1) {
2063 if (net_ratelimit())
2064 printk(KERN_ERR PFX "%s: ram data write parity error\n",
2067 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2070 if (status & Y2_IS_PAR_MAC1) {
2071 if (net_ratelimit())
2072 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
2073 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2076 if (status & Y2_IS_PAR_RX1) {
2077 if (net_ratelimit())
2078 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
2079 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2082 if (status & Y2_IS_TCP_TXA1) {
2083 if (net_ratelimit())
2084 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
2086 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2090 static void sky2_hw_intr(struct sky2_hw *hw)
2092 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2094 if (status & Y2_IS_TIST_OV)
2095 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2097 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2100 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2101 if (net_ratelimit())
2102 printk(KERN_ERR PFX "%s: pci hw error (0x%x)\n",
2103 pci_name(hw->pdev), pci_err);
2105 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2106 sky2_pci_write16(hw, PCI_STATUS,
2107 pci_err | PCI_STATUS_ERROR_BITS);
2108 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2111 if (status & Y2_IS_PCI_EXP) {
2112 /* PCI-Express uncorrectable Error occurred */
2115 pex_err = sky2_pci_read32(hw, PEX_UNC_ERR_STAT);
2117 if (net_ratelimit())
2118 printk(KERN_ERR PFX "%s: pci express error (0x%x)\n",
2119 pci_name(hw->pdev), pex_err);
2121 /* clear the interrupt */
2122 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2123 sky2_pci_write32(hw, PEX_UNC_ERR_STAT,
2125 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2127 if (pex_err & PEX_FATAL_ERRORS) {
2128 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2129 hwmsk &= ~Y2_IS_PCI_EXP;
2130 sky2_write32(hw, B0_HWE_IMSK, hwmsk);
2134 if (status & Y2_HWE_L1_MASK)
2135 sky2_hw_error(hw, 0, status);
2137 if (status & Y2_HWE_L1_MASK)
2138 sky2_hw_error(hw, 1, status);
2141 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2143 struct net_device *dev = hw->dev[port];
2144 struct sky2_port *sky2 = netdev_priv(dev);
2145 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2147 if (netif_msg_intr(sky2))
2148 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2151 if (status & GM_IS_RX_FF_OR) {
2152 ++sky2->net_stats.rx_fifo_errors;
2153 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2156 if (status & GM_IS_TX_FF_UR) {
2157 ++sky2->net_stats.tx_fifo_errors;
2158 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2162 /* This should never happen it is a fatal situation */
2163 static void sky2_descriptor_error(struct sky2_hw *hw, unsigned port,
2164 const char *rxtx, u32 mask)
2166 struct net_device *dev = hw->dev[port];
2167 struct sky2_port *sky2 = netdev_priv(dev);
2170 printk(KERN_ERR PFX "%s: %s descriptor error (hardware problem)\n",
2171 dev ? dev->name : "<not registered>", rxtx);
2173 imask = sky2_read32(hw, B0_IMSK);
2175 sky2_write32(hw, B0_IMSK, imask);
2178 spin_lock(&sky2->phy_lock);
2179 sky2_link_down(sky2);
2180 spin_unlock(&sky2->phy_lock);
2184 /* If idle then force a fake soft NAPI poll once a second
2185 * to work around cases where sharing an edge triggered interrupt.
2187 static inline void sky2_idle_start(struct sky2_hw *hw)
2189 if (idle_timeout > 0)
2190 mod_timer(&hw->idle_timer,
2191 jiffies + msecs_to_jiffies(idle_timeout));
2194 static void sky2_idle(unsigned long arg)
2196 struct sky2_hw *hw = (struct sky2_hw *) arg;
2197 struct net_device *dev = hw->dev[0];
2199 if (__netif_rx_schedule_prep(dev))
2200 __netif_rx_schedule(dev);
2202 mod_timer(&hw->idle_timer, jiffies + msecs_to_jiffies(idle_timeout));
2206 static int sky2_poll(struct net_device *dev0, int *budget)
2208 struct sky2_hw *hw = ((struct sky2_port *) netdev_priv(dev0))->hw;
2209 int work_limit = min(dev0->quota, *budget);
2211 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2213 if (status & Y2_IS_HW_ERR)
2216 if (status & Y2_IS_IRQ_PHY1)
2217 sky2_phy_intr(hw, 0);
2219 if (status & Y2_IS_IRQ_PHY2)
2220 sky2_phy_intr(hw, 1);
2222 if (status & Y2_IS_IRQ_MAC1)
2223 sky2_mac_intr(hw, 0);
2225 if (status & Y2_IS_IRQ_MAC2)
2226 sky2_mac_intr(hw, 1);
2228 if (status & Y2_IS_CHK_RX1)
2229 sky2_descriptor_error(hw, 0, "receive", Y2_IS_CHK_RX1);
2231 if (status & Y2_IS_CHK_RX2)
2232 sky2_descriptor_error(hw, 1, "receive", Y2_IS_CHK_RX2);
2234 if (status & Y2_IS_CHK_TXA1)
2235 sky2_descriptor_error(hw, 0, "transmit", Y2_IS_CHK_TXA1);
2237 if (status & Y2_IS_CHK_TXA2)
2238 sky2_descriptor_error(hw, 1, "transmit", Y2_IS_CHK_TXA2);
2240 work_done = sky2_status_intr(hw, work_limit);
2241 if (work_done < work_limit) {
2242 netif_rx_complete(dev0);
2244 sky2_read32(hw, B0_Y2_SP_LISR);
2247 *budget -= work_done;
2248 dev0->quota -= work_done;
2253 static irqreturn_t sky2_intr(int irq, void *dev_id, struct pt_regs *regs)
2255 struct sky2_hw *hw = dev_id;
2256 struct net_device *dev0 = hw->dev[0];
2259 /* Reading this mask interrupts as side effect */
2260 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2261 if (status == 0 || status == ~0)
2264 prefetch(&hw->st_le[hw->st_idx]);
2265 if (likely(__netif_rx_schedule_prep(dev0)))
2266 __netif_rx_schedule(dev0);
2271 #ifdef CONFIG_NET_POLL_CONTROLLER
2272 static void sky2_netpoll(struct net_device *dev)
2274 struct sky2_port *sky2 = netdev_priv(dev);
2275 struct net_device *dev0 = sky2->hw->dev[0];
2277 if (netif_running(dev) && __netif_rx_schedule_prep(dev0))
2278 __netif_rx_schedule(dev0);
2282 /* Chip internal frequency for clock calculations */
2283 static inline u32 sky2_mhz(const struct sky2_hw *hw)
2285 switch (hw->chip_id) {
2286 case CHIP_ID_YUKON_EC:
2287 case CHIP_ID_YUKON_EC_U:
2288 return 125; /* 125 Mhz */
2289 case CHIP_ID_YUKON_FE:
2290 return 100; /* 100 Mhz */
2291 default: /* YUKON_XL */
2292 return 156; /* 156 Mhz */
2296 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2298 return sky2_mhz(hw) * us;
2301 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2303 return clk / sky2_mhz(hw);
2307 static int sky2_reset(struct sky2_hw *hw)
2313 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2315 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2316 if (hw->chip_id < CHIP_ID_YUKON_XL || hw->chip_id > CHIP_ID_YUKON_FE) {
2317 printk(KERN_ERR PFX "%s: unsupported chip type 0x%x\n",
2318 pci_name(hw->pdev), hw->chip_id);
2322 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2324 /* This rev is really old, and requires untested workarounds */
2325 if (hw->chip_id == CHIP_ID_YUKON_EC && hw->chip_rev == CHIP_REV_YU_EC_A1) {
2326 printk(KERN_ERR PFX "%s: unsupported revision Yukon-%s (0x%x) rev %d\n",
2327 pci_name(hw->pdev), yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
2328 hw->chip_id, hw->chip_rev);
2333 if (hw->chip_id <= CHIP_ID_YUKON_EC) {
2334 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2335 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2339 sky2_write8(hw, B0_CTST, CS_RST_SET);
2340 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2342 /* clear PCI errors, if any */
2343 status = sky2_pci_read16(hw, PCI_STATUS);
2345 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2346 sky2_pci_write16(hw, PCI_STATUS, status | PCI_STATUS_ERROR_BITS);
2349 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2351 /* clear any PEX errors */
2352 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
2353 sky2_pci_write32(hw, PEX_UNC_ERR_STAT, 0xffffffffUL);
2356 pmd_type = sky2_read8(hw, B2_PMD_TYP);
2357 hw->copper = !(pmd_type == 'L' || pmd_type == 'S');
2360 t8 = sky2_read8(hw, B2_Y2_HW_RES);
2361 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
2362 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2366 sky2_set_power_state(hw, PCI_D0);
2368 for (i = 0; i < hw->ports; i++) {
2369 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2370 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2373 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2375 /* Clear I2C IRQ noise */
2376 sky2_write32(hw, B2_I2C_IRQ, 1);
2378 /* turn off hardware timer (unused) */
2379 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2380 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
2382 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
2384 /* Turn off descriptor polling */
2385 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
2387 /* Turn off receive timestamp */
2388 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
2389 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2391 /* enable the Tx Arbiters */
2392 for (i = 0; i < hw->ports; i++)
2393 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
2395 /* Initialize ram interface */
2396 for (i = 0; i < hw->ports; i++) {
2397 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
2399 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
2400 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
2401 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
2402 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
2403 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
2404 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
2405 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
2406 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
2407 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
2408 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
2409 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
2410 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
2413 sky2_write32(hw, B0_HWE_IMSK, Y2_HWE_ALL_MASK);
2415 for (i = 0; i < hw->ports; i++)
2416 sky2_gmac_reset(hw, i);
2418 memset(hw->st_le, 0, STATUS_LE_BYTES);
2421 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
2422 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
2424 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
2425 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
2427 /* Set the list last index */
2428 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
2430 sky2_write16(hw, STAT_TX_IDX_TH, 10);
2431 sky2_write8(hw, STAT_FIFO_WM, 16);
2433 /* set Status-FIFO ISR watermark */
2434 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
2435 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
2437 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
2439 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
2440 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
2441 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
2443 /* enable status unit */
2444 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
2446 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2447 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2448 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2453 static u32 sky2_supported_modes(const struct sky2_hw *hw)
2457 modes = SUPPORTED_10baseT_Half
2458 | SUPPORTED_10baseT_Full
2459 | SUPPORTED_100baseT_Half
2460 | SUPPORTED_100baseT_Full
2461 | SUPPORTED_Autoneg | SUPPORTED_TP;
2463 if (hw->chip_id != CHIP_ID_YUKON_FE)
2464 modes |= SUPPORTED_1000baseT_Half
2465 | SUPPORTED_1000baseT_Full;
2467 modes = SUPPORTED_1000baseT_Full | SUPPORTED_FIBRE
2468 | SUPPORTED_Autoneg;
2472 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2474 struct sky2_port *sky2 = netdev_priv(dev);
2475 struct sky2_hw *hw = sky2->hw;
2477 ecmd->transceiver = XCVR_INTERNAL;
2478 ecmd->supported = sky2_supported_modes(hw);
2479 ecmd->phy_address = PHY_ADDR_MARV;
2481 ecmd->supported = SUPPORTED_10baseT_Half
2482 | SUPPORTED_10baseT_Full
2483 | SUPPORTED_100baseT_Half
2484 | SUPPORTED_100baseT_Full
2485 | SUPPORTED_1000baseT_Half
2486 | SUPPORTED_1000baseT_Full
2487 | SUPPORTED_Autoneg | SUPPORTED_TP;
2488 ecmd->port = PORT_TP;
2490 ecmd->port = PORT_FIBRE;
2492 ecmd->advertising = sky2->advertising;
2493 ecmd->autoneg = sky2->autoneg;
2494 ecmd->speed = sky2->speed;
2495 ecmd->duplex = sky2->duplex;
2499 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2501 struct sky2_port *sky2 = netdev_priv(dev);
2502 const struct sky2_hw *hw = sky2->hw;
2503 u32 supported = sky2_supported_modes(hw);
2505 if (ecmd->autoneg == AUTONEG_ENABLE) {
2506 ecmd->advertising = supported;
2512 switch (ecmd->speed) {
2514 if (ecmd->duplex == DUPLEX_FULL)
2515 setting = SUPPORTED_1000baseT_Full;
2516 else if (ecmd->duplex == DUPLEX_HALF)
2517 setting = SUPPORTED_1000baseT_Half;
2522 if (ecmd->duplex == DUPLEX_FULL)
2523 setting = SUPPORTED_100baseT_Full;
2524 else if (ecmd->duplex == DUPLEX_HALF)
2525 setting = SUPPORTED_100baseT_Half;
2531 if (ecmd->duplex == DUPLEX_FULL)
2532 setting = SUPPORTED_10baseT_Full;
2533 else if (ecmd->duplex == DUPLEX_HALF)
2534 setting = SUPPORTED_10baseT_Half;
2542 if ((setting & supported) == 0)
2545 sky2->speed = ecmd->speed;
2546 sky2->duplex = ecmd->duplex;
2549 sky2->autoneg = ecmd->autoneg;
2550 sky2->advertising = ecmd->advertising;
2552 if (netif_running(dev))
2553 sky2_phy_reinit(sky2);
2558 static void sky2_get_drvinfo(struct net_device *dev,
2559 struct ethtool_drvinfo *info)
2561 struct sky2_port *sky2 = netdev_priv(dev);
2563 strcpy(info->driver, DRV_NAME);
2564 strcpy(info->version, DRV_VERSION);
2565 strcpy(info->fw_version, "N/A");
2566 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
2569 static const struct sky2_stat {
2570 char name[ETH_GSTRING_LEN];
2573 { "tx_bytes", GM_TXO_OK_HI },
2574 { "rx_bytes", GM_RXO_OK_HI },
2575 { "tx_broadcast", GM_TXF_BC_OK },
2576 { "rx_broadcast", GM_RXF_BC_OK },
2577 { "tx_multicast", GM_TXF_MC_OK },
2578 { "rx_multicast", GM_RXF_MC_OK },
2579 { "tx_unicast", GM_TXF_UC_OK },
2580 { "rx_unicast", GM_RXF_UC_OK },
2581 { "tx_mac_pause", GM_TXF_MPAUSE },
2582 { "rx_mac_pause", GM_RXF_MPAUSE },
2583 { "collisions", GM_TXF_COL },
2584 { "late_collision",GM_TXF_LAT_COL },
2585 { "aborted", GM_TXF_ABO_COL },
2586 { "single_collisions", GM_TXF_SNG_COL },
2587 { "multi_collisions", GM_TXF_MUL_COL },
2589 { "rx_short", GM_RXF_SHT },
2590 { "rx_runt", GM_RXE_FRAG },
2591 { "rx_64_byte_packets", GM_RXF_64B },
2592 { "rx_65_to_127_byte_packets", GM_RXF_127B },
2593 { "rx_128_to_255_byte_packets", GM_RXF_255B },
2594 { "rx_256_to_511_byte_packets", GM_RXF_511B },
2595 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
2596 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
2597 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
2598 { "rx_too_long", GM_RXF_LNG_ERR },
2599 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
2600 { "rx_jabber", GM_RXF_JAB_PKT },
2601 { "rx_fcs_error", GM_RXF_FCS_ERR },
2603 { "tx_64_byte_packets", GM_TXF_64B },
2604 { "tx_65_to_127_byte_packets", GM_TXF_127B },
2605 { "tx_128_to_255_byte_packets", GM_TXF_255B },
2606 { "tx_256_to_511_byte_packets", GM_TXF_511B },
2607 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
2608 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
2609 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
2610 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
2613 static u32 sky2_get_rx_csum(struct net_device *dev)
2615 struct sky2_port *sky2 = netdev_priv(dev);
2617 return sky2->rx_csum;
2620 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
2622 struct sky2_port *sky2 = netdev_priv(dev);
2624 sky2->rx_csum = data;
2626 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2627 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
2632 static u32 sky2_get_msglevel(struct net_device *netdev)
2634 struct sky2_port *sky2 = netdev_priv(netdev);
2635 return sky2->msg_enable;
2638 static int sky2_nway_reset(struct net_device *dev)
2640 struct sky2_port *sky2 = netdev_priv(dev);
2642 if (sky2->autoneg != AUTONEG_ENABLE)
2645 sky2_phy_reinit(sky2);
2650 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
2652 struct sky2_hw *hw = sky2->hw;
2653 unsigned port = sky2->port;
2656 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
2657 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
2658 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
2659 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
2661 for (i = 2; i < count; i++)
2662 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
2665 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
2667 struct sky2_port *sky2 = netdev_priv(netdev);
2668 sky2->msg_enable = value;
2671 static int sky2_get_stats_count(struct net_device *dev)
2673 return ARRAY_SIZE(sky2_stats);
2676 static void sky2_get_ethtool_stats(struct net_device *dev,
2677 struct ethtool_stats *stats, u64 * data)
2679 struct sky2_port *sky2 = netdev_priv(dev);
2681 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
2684 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
2688 switch (stringset) {
2690 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
2691 memcpy(data + i * ETH_GSTRING_LEN,
2692 sky2_stats[i].name, ETH_GSTRING_LEN);
2697 /* Use hardware MIB variables for critical path statistics and
2698 * transmit feedback not reported at interrupt.
2699 * Other errors are accounted for in interrupt handler.
2701 static struct net_device_stats *sky2_get_stats(struct net_device *dev)
2703 struct sky2_port *sky2 = netdev_priv(dev);
2706 sky2_phy_stats(sky2, data, ARRAY_SIZE(data));
2708 sky2->net_stats.tx_bytes = data[0];
2709 sky2->net_stats.rx_bytes = data[1];
2710 sky2->net_stats.tx_packets = data[2] + data[4] + data[6];
2711 sky2->net_stats.rx_packets = data[3] + data[5] + data[7];
2712 sky2->net_stats.multicast = data[3] + data[5];
2713 sky2->net_stats.collisions = data[10];
2714 sky2->net_stats.tx_aborted_errors = data[12];
2716 return &sky2->net_stats;
2719 static int sky2_set_mac_address(struct net_device *dev, void *p)
2721 struct sky2_port *sky2 = netdev_priv(dev);
2722 struct sky2_hw *hw = sky2->hw;
2723 unsigned port = sky2->port;
2724 const struct sockaddr *addr = p;
2726 if (!is_valid_ether_addr(addr->sa_data))
2727 return -EADDRNOTAVAIL;
2729 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
2730 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
2731 dev->dev_addr, ETH_ALEN);
2732 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
2733 dev->dev_addr, ETH_ALEN);
2735 /* virtual address for data */
2736 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
2738 /* physical address: used for pause frames */
2739 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
2744 static void sky2_set_multicast(struct net_device *dev)
2746 struct sky2_port *sky2 = netdev_priv(dev);
2747 struct sky2_hw *hw = sky2->hw;
2748 unsigned port = sky2->port;
2749 struct dev_mc_list *list = dev->mc_list;
2753 memset(filter, 0, sizeof(filter));
2755 reg = gma_read16(hw, port, GM_RX_CTRL);
2756 reg |= GM_RXCR_UCF_ENA;
2758 if (dev->flags & IFF_PROMISC) /* promiscuous */
2759 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
2760 else if ((dev->flags & IFF_ALLMULTI) || dev->mc_count > 16) /* all multicast */
2761 memset(filter, 0xff, sizeof(filter));
2762 else if (dev->mc_count == 0) /* no multicast */
2763 reg &= ~GM_RXCR_MCF_ENA;
2766 reg |= GM_RXCR_MCF_ENA;
2768 for (i = 0; list && i < dev->mc_count; i++, list = list->next) {
2769 u32 bit = ether_crc(ETH_ALEN, list->dmi_addr) & 0x3f;
2770 filter[bit / 8] |= 1 << (bit % 8);
2774 gma_write16(hw, port, GM_MC_ADDR_H1,
2775 (u16) filter[0] | ((u16) filter[1] << 8));
2776 gma_write16(hw, port, GM_MC_ADDR_H2,
2777 (u16) filter[2] | ((u16) filter[3] << 8));
2778 gma_write16(hw, port, GM_MC_ADDR_H3,
2779 (u16) filter[4] | ((u16) filter[5] << 8));
2780 gma_write16(hw, port, GM_MC_ADDR_H4,
2781 (u16) filter[6] | ((u16) filter[7] << 8));
2783 gma_write16(hw, port, GM_RX_CTRL, reg);
2786 /* Can have one global because blinking is controlled by
2787 * ethtool and that is always under RTNL mutex
2789 static void sky2_led(struct sky2_hw *hw, unsigned port, int on)
2793 switch (hw->chip_id) {
2794 case CHIP_ID_YUKON_XL:
2795 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2796 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2797 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
2798 on ? (PHY_M_LEDC_LOS_CTRL(1) |
2799 PHY_M_LEDC_INIT_CTRL(7) |
2800 PHY_M_LEDC_STA1_CTRL(7) |
2801 PHY_M_LEDC_STA0_CTRL(7))
2804 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2808 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
2809 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
2810 on ? PHY_M_LED_MO_DUP(MO_LED_ON) |
2811 PHY_M_LED_MO_10(MO_LED_ON) |
2812 PHY_M_LED_MO_100(MO_LED_ON) |
2813 PHY_M_LED_MO_1000(MO_LED_ON) |
2814 PHY_M_LED_MO_RX(MO_LED_ON)
2815 : PHY_M_LED_MO_DUP(MO_LED_OFF) |
2816 PHY_M_LED_MO_10(MO_LED_OFF) |
2817 PHY_M_LED_MO_100(MO_LED_OFF) |
2818 PHY_M_LED_MO_1000(MO_LED_OFF) |
2819 PHY_M_LED_MO_RX(MO_LED_OFF));
2824 /* blink LED's for finding board */
2825 static int sky2_phys_id(struct net_device *dev, u32 data)
2827 struct sky2_port *sky2 = netdev_priv(dev);
2828 struct sky2_hw *hw = sky2->hw;
2829 unsigned port = sky2->port;
2830 u16 ledctrl, ledover = 0;
2835 if (!data || data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ))
2836 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT);
2840 /* save initial values */
2841 spin_lock_bh(&sky2->phy_lock);
2842 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2843 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2844 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2845 ledctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
2846 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2848 ledctrl = gm_phy_read(hw, port, PHY_MARV_LED_CTRL);
2849 ledover = gm_phy_read(hw, port, PHY_MARV_LED_OVER);
2853 while (!interrupted && ms > 0) {
2854 sky2_led(hw, port, onoff);
2857 spin_unlock_bh(&sky2->phy_lock);
2858 interrupted = msleep_interruptible(250);
2859 spin_lock_bh(&sky2->phy_lock);
2864 /* resume regularly scheduled programming */
2865 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2866 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2867 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2868 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ledctrl);
2869 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2871 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
2872 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
2874 spin_unlock_bh(&sky2->phy_lock);
2879 static void sky2_get_pauseparam(struct net_device *dev,
2880 struct ethtool_pauseparam *ecmd)
2882 struct sky2_port *sky2 = netdev_priv(dev);
2884 ecmd->tx_pause = sky2->tx_pause;
2885 ecmd->rx_pause = sky2->rx_pause;
2886 ecmd->autoneg = sky2->autoneg;
2889 static int sky2_set_pauseparam(struct net_device *dev,
2890 struct ethtool_pauseparam *ecmd)
2892 struct sky2_port *sky2 = netdev_priv(dev);
2895 sky2->autoneg = ecmd->autoneg;
2896 sky2->tx_pause = ecmd->tx_pause != 0;
2897 sky2->rx_pause = ecmd->rx_pause != 0;
2899 sky2_phy_reinit(sky2);
2904 static int sky2_get_coalesce(struct net_device *dev,
2905 struct ethtool_coalesce *ecmd)
2907 struct sky2_port *sky2 = netdev_priv(dev);
2908 struct sky2_hw *hw = sky2->hw;
2910 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
2911 ecmd->tx_coalesce_usecs = 0;
2913 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
2914 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
2916 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
2918 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
2919 ecmd->rx_coalesce_usecs = 0;
2921 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
2922 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
2924 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
2926 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
2927 ecmd->rx_coalesce_usecs_irq = 0;
2929 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
2930 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
2933 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
2938 /* Note: this affect both ports */
2939 static int sky2_set_coalesce(struct net_device *dev,
2940 struct ethtool_coalesce *ecmd)
2942 struct sky2_port *sky2 = netdev_priv(dev);
2943 struct sky2_hw *hw = sky2->hw;
2944 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
2946 if (ecmd->tx_coalesce_usecs > tmax ||
2947 ecmd->rx_coalesce_usecs > tmax ||
2948 ecmd->rx_coalesce_usecs_irq > tmax)
2951 if (ecmd->tx_max_coalesced_frames >= TX_RING_SIZE-1)
2953 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
2955 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
2958 if (ecmd->tx_coalesce_usecs == 0)
2959 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
2961 sky2_write32(hw, STAT_TX_TIMER_INI,
2962 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
2963 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2965 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
2967 if (ecmd->rx_coalesce_usecs == 0)
2968 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
2970 sky2_write32(hw, STAT_LEV_TIMER_INI,
2971 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
2972 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2974 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
2976 if (ecmd->rx_coalesce_usecs_irq == 0)
2977 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
2979 sky2_write32(hw, STAT_ISR_TIMER_INI,
2980 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
2981 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2983 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
2987 static void sky2_get_ringparam(struct net_device *dev,
2988 struct ethtool_ringparam *ering)
2990 struct sky2_port *sky2 = netdev_priv(dev);
2992 ering->rx_max_pending = RX_MAX_PENDING;
2993 ering->rx_mini_max_pending = 0;
2994 ering->rx_jumbo_max_pending = 0;
2995 ering->tx_max_pending = TX_RING_SIZE - 1;
2997 ering->rx_pending = sky2->rx_pending;
2998 ering->rx_mini_pending = 0;
2999 ering->rx_jumbo_pending = 0;
3000 ering->tx_pending = sky2->tx_pending;
3003 static int sky2_set_ringparam(struct net_device *dev,
3004 struct ethtool_ringparam *ering)
3006 struct sky2_port *sky2 = netdev_priv(dev);
3009 if (ering->rx_pending > RX_MAX_PENDING ||
3010 ering->rx_pending < 8 ||
3011 ering->tx_pending < MAX_SKB_TX_LE ||
3012 ering->tx_pending > TX_RING_SIZE - 1)
3015 if (netif_running(dev))
3018 sky2->rx_pending = ering->rx_pending;
3019 sky2->tx_pending = ering->tx_pending;
3021 if (netif_running(dev)) {
3026 sky2_set_multicast(dev);
3032 static int sky2_get_regs_len(struct net_device *dev)
3038 * Returns copy of control register region
3039 * Note: access to the RAM address register set will cause timeouts.
3041 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
3044 const struct sky2_port *sky2 = netdev_priv(dev);
3045 const void __iomem *io = sky2->hw->regs;
3047 BUG_ON(regs->len < B3_RI_WTO_R1);
3049 memset(p, 0, regs->len);
3051 memcpy_fromio(p, io, B3_RAM_ADDR);
3053 memcpy_fromio(p + B3_RI_WTO_R1,
3055 regs->len - B3_RI_WTO_R1);
3058 static struct ethtool_ops sky2_ethtool_ops = {
3059 .get_settings = sky2_get_settings,
3060 .set_settings = sky2_set_settings,
3061 .get_drvinfo = sky2_get_drvinfo,
3062 .get_msglevel = sky2_get_msglevel,
3063 .set_msglevel = sky2_set_msglevel,
3064 .nway_reset = sky2_nway_reset,
3065 .get_regs_len = sky2_get_regs_len,
3066 .get_regs = sky2_get_regs,
3067 .get_link = ethtool_op_get_link,
3068 .get_sg = ethtool_op_get_sg,
3069 .set_sg = ethtool_op_set_sg,
3070 .get_tx_csum = ethtool_op_get_tx_csum,
3071 .set_tx_csum = ethtool_op_set_tx_csum,
3072 .get_tso = ethtool_op_get_tso,
3073 .set_tso = ethtool_op_set_tso,
3074 .get_rx_csum = sky2_get_rx_csum,
3075 .set_rx_csum = sky2_set_rx_csum,
3076 .get_strings = sky2_get_strings,
3077 .get_coalesce = sky2_get_coalesce,
3078 .set_coalesce = sky2_set_coalesce,
3079 .get_ringparam = sky2_get_ringparam,
3080 .set_ringparam = sky2_set_ringparam,
3081 .get_pauseparam = sky2_get_pauseparam,
3082 .set_pauseparam = sky2_set_pauseparam,
3083 .phys_id = sky2_phys_id,
3084 .get_stats_count = sky2_get_stats_count,
3085 .get_ethtool_stats = sky2_get_ethtool_stats,
3086 .get_perm_addr = ethtool_op_get_perm_addr,
3089 /* Initialize network device */
3090 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
3091 unsigned port, int highmem)
3093 struct sky2_port *sky2;
3094 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
3097 printk(KERN_ERR "sky2 etherdev alloc failed");
3101 SET_MODULE_OWNER(dev);
3102 SET_NETDEV_DEV(dev, &hw->pdev->dev);
3103 dev->irq = hw->pdev->irq;
3104 dev->open = sky2_up;
3105 dev->stop = sky2_down;
3106 dev->do_ioctl = sky2_ioctl;
3107 dev->hard_start_xmit = sky2_xmit_frame;
3108 dev->get_stats = sky2_get_stats;
3109 dev->set_multicast_list = sky2_set_multicast;
3110 dev->set_mac_address = sky2_set_mac_address;
3111 dev->change_mtu = sky2_change_mtu;
3112 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
3113 dev->tx_timeout = sky2_tx_timeout;
3114 dev->watchdog_timeo = TX_WATCHDOG;
3116 dev->poll = sky2_poll;
3117 dev->weight = NAPI_WEIGHT;
3118 #ifdef CONFIG_NET_POLL_CONTROLLER
3119 dev->poll_controller = sky2_netpoll;
3122 sky2 = netdev_priv(dev);
3125 sky2->msg_enable = netif_msg_init(debug, default_msg);
3127 spin_lock_init(&sky2->tx_lock);
3128 /* Auto speed and flow control */
3129 sky2->autoneg = AUTONEG_ENABLE;
3134 sky2->advertising = sky2_supported_modes(hw);
3137 spin_lock_init(&sky2->phy_lock);
3138 sky2->tx_pending = TX_DEF_PENDING;
3139 sky2->rx_pending = RX_DEF_PENDING;
3140 sky2->rx_bufsize = sky2_buf_size(ETH_DATA_LEN);
3142 hw->dev[port] = dev;
3146 dev->features |= NETIF_F_LLTX;
3147 if (hw->chip_id != CHIP_ID_YUKON_EC_U)
3148 dev->features |= NETIF_F_TSO;
3150 dev->features |= NETIF_F_HIGHDMA;
3151 dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
3153 #ifdef SKY2_VLAN_TAG_USED
3154 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
3155 dev->vlan_rx_register = sky2_vlan_rx_register;
3156 dev->vlan_rx_kill_vid = sky2_vlan_rx_kill_vid;
3159 /* read the mac address */
3160 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
3161 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
3163 /* device is off until link detection */
3164 netif_carrier_off(dev);
3165 netif_stop_queue(dev);
3170 static void __devinit sky2_show_addr(struct net_device *dev)
3172 const struct sky2_port *sky2 = netdev_priv(dev);
3174 if (netif_msg_probe(sky2))
3175 printk(KERN_INFO PFX "%s: addr %02x:%02x:%02x:%02x:%02x:%02x\n",
3177 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
3178 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
3181 /* Handle software interrupt used during MSI test */
3182 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id,
3183 struct pt_regs *regs)
3185 struct sky2_hw *hw = dev_id;
3186 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
3191 if (status & Y2_IS_IRQ_SW) {
3192 hw->msi_detected = 1;
3193 wake_up(&hw->msi_wait);
3194 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3196 sky2_write32(hw, B0_Y2_SP_ICR, 2);
3201 /* Test interrupt path by forcing a a software IRQ */
3202 static int __devinit sky2_test_msi(struct sky2_hw *hw)
3204 struct pci_dev *pdev = hw->pdev;
3207 init_waitqueue_head (&hw->msi_wait);
3209 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
3211 err = request_irq(pdev->irq, sky2_test_intr, IRQF_SHARED, DRV_NAME, hw);
3213 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3214 pci_name(pdev), pdev->irq);
3218 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
3219 sky2_read8(hw, B0_CTST);
3221 wait_event_timeout(hw->msi_wait, hw->msi_detected, HZ/10);
3223 if (!hw->msi_detected) {
3224 /* MSI test failed, go back to INTx mode */
3225 printk(KERN_WARNING PFX "%s: No interrupt was generated using MSI, "
3226 "switching to INTx mode. Please report this failure to "
3227 "the PCI maintainer and include system chipset information.\n",
3231 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3234 sky2_write32(hw, B0_IMSK, 0);
3236 free_irq(pdev->irq, hw);
3241 static int __devinit sky2_probe(struct pci_dev *pdev,
3242 const struct pci_device_id *ent)
3244 struct net_device *dev, *dev1 = NULL;
3246 int err, pm_cap, using_dac = 0;
3248 err = pci_enable_device(pdev);
3250 printk(KERN_ERR PFX "%s cannot enable PCI device\n",
3255 err = pci_request_regions(pdev, DRV_NAME);
3257 printk(KERN_ERR PFX "%s cannot obtain PCI resources\n",
3262 pci_set_master(pdev);
3264 /* Find power-management capability. */
3265 pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
3267 printk(KERN_ERR PFX "Cannot find PowerManagement capability, "
3270 goto err_out_free_regions;
3273 if (sizeof(dma_addr_t) > sizeof(u32) &&
3274 !(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
3276 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3278 printk(KERN_ERR PFX "%s unable to obtain 64 bit DMA "
3279 "for consistent allocations\n", pci_name(pdev));
3280 goto err_out_free_regions;
3284 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
3286 printk(KERN_ERR PFX "%s no usable DMA configuration\n",
3288 goto err_out_free_regions;
3293 hw = kzalloc(sizeof(*hw), GFP_KERNEL);
3295 printk(KERN_ERR PFX "%s: cannot allocate hardware struct\n",
3297 goto err_out_free_regions;
3302 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
3304 printk(KERN_ERR PFX "%s: cannot map device registers\n",
3306 goto err_out_free_hw;
3308 hw->pm_cap = pm_cap;
3311 /* byte swap descriptors in hardware */
3315 reg = sky2_pci_read32(hw, PCI_DEV_REG2);
3316 reg |= PCI_REV_DESC;
3317 sky2_pci_write32(hw, PCI_DEV_REG2, reg);
3321 /* ring for status responses */
3322 hw->st_le = pci_alloc_consistent(hw->pdev, STATUS_LE_BYTES,
3325 goto err_out_iounmap;
3327 err = sky2_reset(hw);
3329 goto err_out_iounmap;
3331 printk(KERN_INFO PFX "v%s addr 0x%llx irq %d Yukon-%s (0x%x) rev %d\n",
3332 DRV_VERSION, (unsigned long long)pci_resource_start(pdev, 0),
3333 pdev->irq, yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
3334 hw->chip_id, hw->chip_rev);
3336 dev = sky2_init_netdev(hw, 0, using_dac);
3338 goto err_out_free_pci;
3340 err = register_netdev(dev);
3342 printk(KERN_ERR PFX "%s: cannot register net device\n",
3344 goto err_out_free_netdev;
3347 sky2_show_addr(dev);
3349 if (hw->ports > 1 && (dev1 = sky2_init_netdev(hw, 1, using_dac))) {
3350 if (register_netdev(dev1) == 0)
3351 sky2_show_addr(dev1);
3353 /* Failure to register second port need not be fatal */
3354 printk(KERN_WARNING PFX
3355 "register of second port failed\n");
3361 if (!disable_msi && pci_enable_msi(pdev) == 0) {
3362 err = sky2_test_msi(hw);
3363 if (err == -EOPNOTSUPP)
3364 pci_disable_msi(pdev);
3366 goto err_out_unregister;
3369 err = request_irq(pdev->irq, sky2_intr, IRQF_SHARED, DRV_NAME, hw);
3371 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3372 pci_name(pdev), pdev->irq);
3373 goto err_out_unregister;
3376 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3378 setup_timer(&hw->idle_timer, sky2_idle, (unsigned long) hw);
3379 sky2_idle_start(hw);
3381 pci_set_drvdata(pdev, hw);
3386 pci_disable_msi(pdev);
3388 unregister_netdev(dev1);
3391 unregister_netdev(dev);
3392 err_out_free_netdev:
3395 sky2_write8(hw, B0_CTST, CS_RST_SET);
3396 pci_free_consistent(hw->pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3401 err_out_free_regions:
3402 pci_release_regions(pdev);
3403 pci_disable_device(pdev);
3408 static void __devexit sky2_remove(struct pci_dev *pdev)
3410 struct sky2_hw *hw = pci_get_drvdata(pdev);
3411 struct net_device *dev0, *dev1;
3416 del_timer_sync(&hw->idle_timer);
3418 sky2_write32(hw, B0_IMSK, 0);
3419 synchronize_irq(hw->pdev->irq);
3424 unregister_netdev(dev1);
3425 unregister_netdev(dev0);
3427 sky2_set_power_state(hw, PCI_D3hot);
3428 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
3429 sky2_write8(hw, B0_CTST, CS_RST_SET);
3430 sky2_read8(hw, B0_CTST);
3432 free_irq(pdev->irq, hw);
3433 pci_disable_msi(pdev);
3434 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3435 pci_release_regions(pdev);
3436 pci_disable_device(pdev);
3444 pci_set_drvdata(pdev, NULL);
3448 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
3450 struct sky2_hw *hw = pci_get_drvdata(pdev);
3452 pci_power_t pstate = pci_choose_state(pdev, state);
3454 if (!(pstate == PCI_D3hot || pstate == PCI_D3cold))
3457 del_timer_sync(&hw->idle_timer);
3458 netif_poll_disable(hw->dev[0]);
3460 for (i = 0; i < hw->ports; i++) {
3461 struct net_device *dev = hw->dev[i];
3463 if (netif_running(dev)) {
3465 netif_device_detach(dev);
3469 sky2_write32(hw, B0_IMSK, 0);
3470 pci_save_state(pdev);
3471 sky2_set_power_state(hw, pstate);
3475 static int sky2_resume(struct pci_dev *pdev)
3477 struct sky2_hw *hw = pci_get_drvdata(pdev);
3480 pci_restore_state(pdev);
3481 pci_enable_wake(pdev, PCI_D0, 0);
3482 sky2_set_power_state(hw, PCI_D0);
3484 err = sky2_reset(hw);
3488 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3490 for (i = 0; i < hw->ports; i++) {
3491 struct net_device *dev = hw->dev[i];
3492 if (netif_running(dev)) {
3493 netif_device_attach(dev);
3497 printk(KERN_ERR PFX "%s: could not up: %d\n",
3505 netif_poll_enable(hw->dev[0]);
3506 sky2_idle_start(hw);
3512 static struct pci_driver sky2_driver = {
3514 .id_table = sky2_id_table,
3515 .probe = sky2_probe,
3516 .remove = __devexit_p(sky2_remove),
3518 .suspend = sky2_suspend,
3519 .resume = sky2_resume,
3523 static int __init sky2_init_module(void)
3525 return pci_register_driver(&sky2_driver);
3528 static void __exit sky2_cleanup_module(void)
3530 pci_unregister_driver(&sky2_driver);
3533 module_init(sky2_init_module);
3534 module_exit(sky2_cleanup_module);
3536 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
3537 MODULE_AUTHOR("Stephen Hemminger <shemminger@osdl.org>");
3538 MODULE_LICENSE("GPL");
3539 MODULE_VERSION(DRV_VERSION);