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 "1.9"
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
62 #define RX_LE_SIZE 1024
63 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
64 #define RX_MAX_PENDING (RX_LE_SIZE/6 - 2)
65 #define RX_DEF_PENDING RX_MAX_PENDING
66 #define RX_SKB_ALIGN 8
67 #define RX_BUF_WRITE 16
69 #define TX_RING_SIZE 512
70 #define TX_DEF_PENDING (TX_RING_SIZE - 1)
71 #define TX_MIN_PENDING 64
72 #define MAX_SKB_TX_LE (4 + (sizeof(dma_addr_t)/sizeof(u32))*MAX_SKB_FRAGS)
74 #define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
75 #define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
76 #define TX_WATCHDOG (5 * HZ)
77 #define NAPI_WEIGHT 64
78 #define PHY_RETRIES 1000
80 #define RING_NEXT(x,s) (((x)+1) & ((s)-1))
82 static const u32 default_msg =
83 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
84 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
85 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
87 static int debug = -1; /* defaults above */
88 module_param(debug, int, 0);
89 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
91 static int copybreak __read_mostly = 128;
92 module_param(copybreak, int, 0);
93 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
95 static int disable_msi = 0;
96 module_param(disable_msi, int, 0);
97 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
99 static int idle_timeout = 0;
100 module_param(idle_timeout, int, 0);
101 MODULE_PARM_DESC(idle_timeout, "Watchdog timer for lost interrupts (ms)");
103 static const struct pci_device_id sky2_id_table[] = {
104 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) },
105 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) },
106 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
107 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
108 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) },
109 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) },
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) },
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) },
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) },
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) },
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) },
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) },
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) },
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) },
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) },
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) },
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) },
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) },
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) },
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) },
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) },
125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4365) },
126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) },
127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) },
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) },
129 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4369) },
133 MODULE_DEVICE_TABLE(pci, sky2_id_table);
135 /* Avoid conditionals by using array */
136 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
137 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
138 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
140 /* This driver supports yukon2 chipset only */
141 static const char *yukon2_name[] = {
143 "EC Ultra", /* 0xb4 */
144 "UNKNOWN", /* 0xb5 */
149 /* Access to external PHY */
150 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
154 gma_write16(hw, port, GM_SMI_DATA, val);
155 gma_write16(hw, port, GM_SMI_CTRL,
156 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
158 for (i = 0; i < PHY_RETRIES; i++) {
159 if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
164 printk(KERN_WARNING PFX "%s: phy write timeout\n", hw->dev[port]->name);
168 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
172 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
173 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
175 for (i = 0; i < PHY_RETRIES; i++) {
176 if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL) {
177 *val = gma_read16(hw, port, GM_SMI_DATA);
187 static u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
191 if (__gm_phy_read(hw, port, reg, &v) != 0)
192 printk(KERN_WARNING PFX "%s: phy read timeout\n", hw->dev[port]->name);
196 static void sky2_set_power_state(struct sky2_hw *hw, pci_power_t state)
201 pr_debug("sky2_set_power_state %d\n", state);
202 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
204 power_control = sky2_pci_read16(hw, hw->pm_cap + PCI_PM_PMC);
205 vaux = (sky2_read16(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
206 (power_control & PCI_PM_CAP_PME_D3cold);
208 power_control = sky2_pci_read16(hw, hw->pm_cap + PCI_PM_CTRL);
210 power_control |= PCI_PM_CTRL_PME_STATUS;
211 power_control &= ~(PCI_PM_CTRL_STATE_MASK);
215 /* switch power to VCC (WA for VAUX problem) */
216 sky2_write8(hw, B0_POWER_CTRL,
217 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
219 /* disable Core Clock Division, */
220 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
222 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
223 /* enable bits are inverted */
224 sky2_write8(hw, B2_Y2_CLK_GATE,
225 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
226 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
227 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
229 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
231 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
234 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
235 reg1 = sky2_pci_read32(hw, PCI_DEV_REG4);
236 reg1 &= P_ASPM_CONTROL_MSK;
237 sky2_pci_write32(hw, PCI_DEV_REG4, reg1);
238 sky2_pci_write32(hw, PCI_DEV_REG5, 0);
245 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
246 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
248 /* enable bits are inverted */
249 sky2_write8(hw, B2_Y2_CLK_GATE,
250 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
251 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
252 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
254 /* switch power to VAUX */
255 if (vaux && state != PCI_D3cold)
256 sky2_write8(hw, B0_POWER_CTRL,
257 (PC_VAUX_ENA | PC_VCC_ENA |
258 PC_VAUX_ON | PC_VCC_OFF));
261 printk(KERN_ERR PFX "Unknown power state %d\n", state);
264 sky2_pci_write16(hw, hw->pm_cap + PCI_PM_CTRL, power_control);
265 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
268 static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
272 /* disable all GMAC IRQ's */
273 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
274 /* disable PHY IRQs */
275 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
277 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
278 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
279 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
280 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
282 reg = gma_read16(hw, port, GM_RX_CTRL);
283 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
284 gma_write16(hw, port, GM_RX_CTRL, reg);
287 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
289 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
290 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
292 if (sky2->autoneg == AUTONEG_ENABLE &&
293 !(hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)) {
294 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
296 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
298 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
300 if (hw->chip_id == CHIP_ID_YUKON_EC)
301 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
303 ectrl |= PHY_M_EC_M_DSC(2) | PHY_M_EC_S_DSC(3);
305 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
308 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
309 if (sky2_is_copper(hw)) {
310 if (hw->chip_id == CHIP_ID_YUKON_FE) {
311 /* enable automatic crossover */
312 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
314 /* disable energy detect */
315 ctrl &= ~PHY_M_PC_EN_DET_MSK;
317 /* enable automatic crossover */
318 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
320 if (sky2->autoneg == AUTONEG_ENABLE &&
321 (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)) {
322 ctrl &= ~PHY_M_PC_DSC_MSK;
323 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
327 /* workaround for deviation #4.88 (CRC errors) */
328 /* disable Automatic Crossover */
330 ctrl &= ~PHY_M_PC_MDIX_MSK;
333 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
335 /* special setup for PHY 88E1112 Fiber */
336 if (hw->chip_id == CHIP_ID_YUKON_XL && !sky2_is_copper(hw)) {
337 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
339 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
340 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
341 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
342 ctrl &= ~PHY_M_MAC_MD_MSK;
343 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
344 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
346 if (hw->pmd_type == 'P') {
347 /* select page 1 to access Fiber registers */
348 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
350 /* for SFP-module set SIGDET polarity to low */
351 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
352 ctrl |= PHY_M_FIB_SIGD_POL;
353 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
356 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
359 ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
360 if (sky2->autoneg == AUTONEG_DISABLE)
365 ctrl |= PHY_CT_RESET;
366 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
373 if (sky2->autoneg == AUTONEG_ENABLE) {
374 if (sky2_is_copper(hw)) {
375 if (sky2->advertising & ADVERTISED_1000baseT_Full)
376 ct1000 |= PHY_M_1000C_AFD;
377 if (sky2->advertising & ADVERTISED_1000baseT_Half)
378 ct1000 |= PHY_M_1000C_AHD;
379 if (sky2->advertising & ADVERTISED_100baseT_Full)
380 adv |= PHY_M_AN_100_FD;
381 if (sky2->advertising & ADVERTISED_100baseT_Half)
382 adv |= PHY_M_AN_100_HD;
383 if (sky2->advertising & ADVERTISED_10baseT_Full)
384 adv |= PHY_M_AN_10_FD;
385 if (sky2->advertising & ADVERTISED_10baseT_Half)
386 adv |= PHY_M_AN_10_HD;
388 /* desired flow control */
389 if (sky2->tx_pause && sky2->rx_pause) /* both */
390 adv |= PHY_M_AN_PC | PHY_M_AN_ASP;
391 else if (sky2->tx_pause)
393 else if (sky2->rx_pause)
397 } else { /* special defines for FIBER (88E1040S only) */
398 if (sky2->advertising & ADVERTISED_1000baseT_Full)
399 adv |= PHY_M_AN_1000X_AFD;
400 if (sky2->advertising & ADVERTISED_1000baseT_Half)
401 adv |= PHY_M_AN_1000X_AHD;
403 if (sky2->tx_pause && sky2->rx_pause) /* both */
404 adv |= PHY_M_P_BOTH_MD_X;
405 else if (sky2->tx_pause)
406 adv |= PHY_M_P_ASYM_MD_X;
407 else if (sky2->rx_pause)
408 adv |= PHY_M_P_SYM_MD_X;
410 adv |= PHY_M_P_NO_PAUSE_X;
413 /* Restart Auto-negotiation */
414 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
416 /* forced speed/duplex settings */
417 ct1000 = PHY_M_1000C_MSE;
419 /* Disable auto update for duplex flow control and speed */
420 reg |= GM_GPCR_AU_ALL_DIS;
422 switch (sky2->speed) {
424 ctrl |= PHY_CT_SP1000;
425 reg |= GM_GPCR_SPEED_1000;
428 ctrl |= PHY_CT_SP100;
429 reg |= GM_GPCR_SPEED_100;
433 if (sky2->duplex == DUPLEX_FULL) {
434 reg |= GM_GPCR_DUP_FULL;
435 ctrl |= PHY_CT_DUP_MD;
436 } else if (sky2->speed != SPEED_1000 && hw->chip_id != CHIP_ID_YUKON_EC_U) {
437 /* Turn off flow control for 10/100mbps */
443 reg |= GM_GPCR_FC_RX_DIS;
446 reg |= GM_GPCR_FC_TX_DIS;
448 /* Forward pause packets to GMAC? */
449 if (sky2->tx_pause || sky2->rx_pause)
450 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
452 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
454 ctrl |= PHY_CT_RESET;
457 gma_write16(hw, port, GM_GP_CTRL, reg);
459 if (hw->chip_id != CHIP_ID_YUKON_FE)
460 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
462 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
463 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
465 /* Setup Phy LED's */
466 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
469 switch (hw->chip_id) {
470 case CHIP_ID_YUKON_FE:
471 /* on 88E3082 these bits are at 11..9 (shifted left) */
472 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
474 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
476 /* delete ACT LED control bits */
477 ctrl &= ~PHY_M_FELP_LED1_MSK;
478 /* change ACT LED control to blink mode */
479 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
480 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
483 case CHIP_ID_YUKON_XL:
484 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
486 /* select page 3 to access LED control register */
487 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
489 /* set LED Function Control register */
490 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
491 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
492 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
493 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
494 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
496 /* set Polarity Control register */
497 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
498 (PHY_M_POLC_LS1_P_MIX(4) |
499 PHY_M_POLC_IS0_P_MIX(4) |
500 PHY_M_POLC_LOS_CTRL(2) |
501 PHY_M_POLC_INIT_CTRL(2) |
502 PHY_M_POLC_STA1_CTRL(2) |
503 PHY_M_POLC_STA0_CTRL(2)));
505 /* restore page register */
506 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
508 case CHIP_ID_YUKON_EC_U:
509 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
511 /* select page 3 to access LED control register */
512 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
514 /* set LED Function Control register */
515 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
516 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
517 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
518 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
519 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
521 /* set Blink Rate in LED Timer Control Register */
522 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
523 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
524 /* restore page register */
525 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
529 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
530 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
531 /* turn off the Rx LED (LED_RX) */
532 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
535 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev == CHIP_REV_YU_EC_A1) {
536 /* apply fixes in PHY AFE */
537 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
538 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
540 /* increase differential signal amplitude in 10BASE-T */
541 gm_phy_write(hw, port, 0x18, 0xaa99);
542 gm_phy_write(hw, port, 0x17, 0x2011);
544 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
545 gm_phy_write(hw, port, 0x18, 0xa204);
546 gm_phy_write(hw, port, 0x17, 0x2002);
548 /* set page register to 0 */
549 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
551 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
553 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
554 /* turn on 100 Mbps LED (LED_LINK100) */
555 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
559 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
563 /* Enable phy interrupt on auto-negotiation complete (or link up) */
564 if (sky2->autoneg == AUTONEG_ENABLE)
565 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
567 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
570 static void sky2_phy_power(struct sky2_hw *hw, unsigned port, int onoff)
573 static const u32 phy_power[]
574 = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
576 /* looks like this XL is back asswards .. */
577 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
580 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
583 /* Turn off phy power saving */
584 reg1 &= ~phy_power[port];
586 reg1 |= phy_power[port];
588 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
589 sky2_pci_read32(hw, PCI_DEV_REG1);
593 /* Force a renegotiation */
594 static void sky2_phy_reinit(struct sky2_port *sky2)
596 spin_lock_bh(&sky2->phy_lock);
597 sky2_phy_init(sky2->hw, sky2->port);
598 spin_unlock_bh(&sky2->phy_lock);
601 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
603 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
606 const u8 *addr = hw->dev[port]->dev_addr;
608 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
609 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR|GPC_ENA_PAUSE);
611 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
613 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
614 /* WA DEV_472 -- looks like crossed wires on port 2 */
615 /* clear GMAC 1 Control reset */
616 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
618 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
619 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
620 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
621 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
622 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
625 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
627 /* Enable Transmit FIFO Underrun */
628 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
630 spin_lock_bh(&sky2->phy_lock);
631 sky2_phy_init(hw, port);
632 spin_unlock_bh(&sky2->phy_lock);
635 reg = gma_read16(hw, port, GM_PHY_ADDR);
636 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
638 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
639 gma_read16(hw, port, i);
640 gma_write16(hw, port, GM_PHY_ADDR, reg);
642 /* transmit control */
643 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
645 /* receive control reg: unicast + multicast + no FCS */
646 gma_write16(hw, port, GM_RX_CTRL,
647 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
649 /* transmit flow control */
650 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
652 /* transmit parameter */
653 gma_write16(hw, port, GM_TX_PARAM,
654 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
655 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
656 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
657 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
659 /* serial mode register */
660 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
661 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
663 if (hw->dev[port]->mtu > ETH_DATA_LEN)
664 reg |= GM_SMOD_JUMBO_ENA;
666 gma_write16(hw, port, GM_SERIAL_MODE, reg);
668 /* virtual address for data */
669 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
671 /* physical address: used for pause frames */
672 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
674 /* ignore counter overflows */
675 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
676 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
677 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
679 /* Configure Rx MAC FIFO */
680 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
681 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
682 GMF_OPER_ON | GMF_RX_F_FL_ON);
684 /* Flush Rx MAC FIFO on any flow control or error */
685 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
687 /* Set threshold to 0xa (64 bytes)
688 * ASF disabled so no need to do WA dev #4.30
690 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF);
692 /* Configure Tx MAC FIFO */
693 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
694 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
696 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
697 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 512/8);
698 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
699 if (hw->dev[port]->mtu > ETH_DATA_LEN) {
700 /* set Tx GMAC FIFO Almost Empty Threshold */
701 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR), 0x180);
702 /* Disable Store & Forward mode for TX */
703 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
709 /* Assign Ram Buffer allocation.
710 * start and end are in units of 4k bytes
711 * ram registers are in units of 64bit words
713 static void sky2_ramset(struct sky2_hw *hw, u16 q, u8 startk, u8 endk)
717 start = startk * 4096/8;
718 end = (endk * 4096/8) - 1;
720 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
721 sky2_write32(hw, RB_ADDR(q, RB_START), start);
722 sky2_write32(hw, RB_ADDR(q, RB_END), end);
723 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
724 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
726 if (q == Q_R1 || q == Q_R2) {
727 u32 space = (endk - startk) * 4096/8;
728 u32 tp = space - space/4;
730 /* On receive queue's set the thresholds
731 * give receiver priority when > 3/4 full
732 * send pause when down to 2K
734 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
735 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
738 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
739 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
741 /* Enable store & forward on Tx queue's because
742 * Tx FIFO is only 1K on Yukon
744 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
747 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
748 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
751 /* Setup Bus Memory Interface */
752 static void sky2_qset(struct sky2_hw *hw, u16 q)
754 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
755 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
756 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
757 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
760 /* Setup prefetch unit registers. This is the interface between
761 * hardware and driver list elements
763 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
766 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
767 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
768 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
769 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
770 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
771 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
773 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
776 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
778 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
780 sky2->tx_prod = RING_NEXT(sky2->tx_prod, TX_RING_SIZE);
785 static inline struct tx_ring_info *tx_le_re(struct sky2_port *sky2,
786 struct sky2_tx_le *le)
788 return sky2->tx_ring + (le - sky2->tx_le);
791 /* Update chip's next pointer */
792 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
794 q = Y2_QADDR(q, PREF_UNIT_PUT_IDX);
796 sky2_write16(hw, q, idx);
801 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
803 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
804 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
809 /* Return high part of DMA address (could be 32 or 64 bit) */
810 static inline u32 high32(dma_addr_t a)
812 return sizeof(a) > sizeof(u32) ? (a >> 16) >> 16 : 0;
815 /* Build description to hardware for one receive segment */
816 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
817 dma_addr_t map, unsigned len)
819 struct sky2_rx_le *le;
820 u32 hi = high32(map);
822 if (sky2->rx_addr64 != hi) {
823 le = sky2_next_rx(sky2);
824 le->addr = cpu_to_le32(hi);
825 le->opcode = OP_ADDR64 | HW_OWNER;
826 sky2->rx_addr64 = high32(map + len);
829 le = sky2_next_rx(sky2);
830 le->addr = cpu_to_le32((u32) map);
831 le->length = cpu_to_le16(len);
832 le->opcode = op | HW_OWNER;
835 /* Build description to hardware for one possibly fragmented skb */
836 static void sky2_rx_submit(struct sky2_port *sky2,
837 const struct rx_ring_info *re)
841 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
843 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
844 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
848 static void sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
851 struct sk_buff *skb = re->skb;
854 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
855 pci_unmap_len_set(re, data_size, size);
857 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
858 re->frag_addr[i] = pci_map_page(pdev,
859 skb_shinfo(skb)->frags[i].page,
860 skb_shinfo(skb)->frags[i].page_offset,
861 skb_shinfo(skb)->frags[i].size,
865 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
867 struct sk_buff *skb = re->skb;
870 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
873 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
874 pci_unmap_page(pdev, re->frag_addr[i],
875 skb_shinfo(skb)->frags[i].size,
879 /* Tell chip where to start receive checksum.
880 * Actually has two checksums, but set both same to avoid possible byte
883 static void rx_set_checksum(struct sky2_port *sky2)
885 struct sky2_rx_le *le;
887 le = sky2_next_rx(sky2);
888 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
890 le->opcode = OP_TCPSTART | HW_OWNER;
892 sky2_write32(sky2->hw,
893 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
894 sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
899 * The RX Stop command will not work for Yukon-2 if the BMU does not
900 * reach the end of packet and since we can't make sure that we have
901 * incoming data, we must reset the BMU while it is not doing a DMA
902 * transfer. Since it is possible that the RX path is still active,
903 * the RX RAM buffer will be stopped first, so any possible incoming
904 * data will not trigger a DMA. After the RAM buffer is stopped, the
905 * BMU is polled until any DMA in progress is ended and only then it
908 static void sky2_rx_stop(struct sky2_port *sky2)
910 struct sky2_hw *hw = sky2->hw;
911 unsigned rxq = rxqaddr[sky2->port];
914 /* disable the RAM Buffer receive queue */
915 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
917 for (i = 0; i < 0xffff; i++)
918 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
919 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
922 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
925 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
927 /* reset the Rx prefetch unit */
928 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
931 /* Clean out receive buffer area, assumes receiver hardware stopped */
932 static void sky2_rx_clean(struct sky2_port *sky2)
936 memset(sky2->rx_le, 0, RX_LE_BYTES);
937 for (i = 0; i < sky2->rx_pending; i++) {
938 struct rx_ring_info *re = sky2->rx_ring + i;
941 sky2_rx_unmap_skb(sky2->hw->pdev, re);
948 /* Basic MII support */
949 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
951 struct mii_ioctl_data *data = if_mii(ifr);
952 struct sky2_port *sky2 = netdev_priv(dev);
953 struct sky2_hw *hw = sky2->hw;
954 int err = -EOPNOTSUPP;
956 if (!netif_running(dev))
957 return -ENODEV; /* Phy still in reset */
961 data->phy_id = PHY_ADDR_MARV;
967 spin_lock_bh(&sky2->phy_lock);
968 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
969 spin_unlock_bh(&sky2->phy_lock);
976 if (!capable(CAP_NET_ADMIN))
979 spin_lock_bh(&sky2->phy_lock);
980 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
982 spin_unlock_bh(&sky2->phy_lock);
988 #ifdef SKY2_VLAN_TAG_USED
989 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
991 struct sky2_port *sky2 = netdev_priv(dev);
992 struct sky2_hw *hw = sky2->hw;
993 u16 port = sky2->port;
995 netif_tx_lock_bh(dev);
997 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_ON);
998 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_ON);
1001 netif_tx_unlock_bh(dev);
1004 static void sky2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1006 struct sky2_port *sky2 = netdev_priv(dev);
1007 struct sky2_hw *hw = sky2->hw;
1008 u16 port = sky2->port;
1010 netif_tx_lock_bh(dev);
1012 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_OFF);
1013 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_OFF);
1015 sky2->vlgrp->vlan_devices[vid] = NULL;
1017 netif_tx_unlock_bh(dev);
1022 * Allocate an skb for receiving. If the MTU is large enough
1023 * make the skb non-linear with a fragment list of pages.
1025 * It appears the hardware has a bug in the FIFO logic that
1026 * cause it to hang if the FIFO gets overrun and the receive buffer
1027 * is not 64 byte aligned. The buffer returned from netdev_alloc_skb is
1028 * aligned except if slab debugging is enabled.
1030 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2)
1032 struct sk_buff *skb;
1036 skb = netdev_alloc_skb(sky2->netdev, sky2->rx_data_size + RX_SKB_ALIGN);
1040 p = (unsigned long) skb->data;
1041 skb_reserve(skb, ALIGN(p, RX_SKB_ALIGN) - p);
1043 for (i = 0; i < sky2->rx_nfrags; i++) {
1044 struct page *page = alloc_page(GFP_ATOMIC);
1048 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1059 * Allocate and setup receiver buffer pool.
1060 * Normal case this ends up creating one list element for skb
1061 * in the receive ring. Worst case if using large MTU and each
1062 * allocation falls on a different 64 bit region, that results
1063 * in 6 list elements per ring entry.
1064 * One element is used for checksum enable/disable, and one
1065 * extra to avoid wrap.
1067 static int sky2_rx_start(struct sky2_port *sky2)
1069 struct sky2_hw *hw = sky2->hw;
1070 struct rx_ring_info *re;
1071 unsigned rxq = rxqaddr[sky2->port];
1072 unsigned i, size, space, thresh;
1074 sky2->rx_put = sky2->rx_next = 0;
1077 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev >= 2) {
1078 /* MAC Rx RAM Read is controlled by hardware */
1079 sky2_write32(hw, Q_ADDR(rxq, Q_F), F_M_RX_RAM_DIS);
1082 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1084 rx_set_checksum(sky2);
1086 /* Space needed for frame data + headers rounded up */
1087 size = ALIGN(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8)
1090 /* Stopping point for hardware truncation */
1091 thresh = (size - 8) / sizeof(u32);
1093 /* Account for overhead of skb - to avoid order > 0 allocation */
1094 space = SKB_DATA_ALIGN(size) + NET_SKB_PAD
1095 + sizeof(struct skb_shared_info);
1097 sky2->rx_nfrags = space >> PAGE_SHIFT;
1098 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1100 if (sky2->rx_nfrags != 0) {
1101 /* Compute residue after pages */
1102 space = sky2->rx_nfrags << PAGE_SHIFT;
1109 /* Optimize to handle small packets and headers */
1110 if (size < copybreak)
1112 if (size < ETH_HLEN)
1115 sky2->rx_data_size = size;
1118 for (i = 0; i < sky2->rx_pending; i++) {
1119 re = sky2->rx_ring + i;
1121 re->skb = sky2_rx_alloc(sky2);
1125 sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size);
1126 sky2_rx_submit(sky2, re);
1130 * The receiver hangs if it receives frames larger than the
1131 * packet buffer. As a workaround, truncate oversize frames, but
1132 * the register is limited to 9 bits, so if you do frames > 2052
1133 * you better get the MTU right!
1136 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1138 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1139 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1142 /* Tell chip about available buffers */
1143 sky2_write16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX), sky2->rx_put);
1146 sky2_rx_clean(sky2);
1150 /* Bring up network interface. */
1151 static int sky2_up(struct net_device *dev)
1153 struct sky2_port *sky2 = netdev_priv(dev);
1154 struct sky2_hw *hw = sky2->hw;
1155 unsigned port = sky2->port;
1156 u32 ramsize, rxspace, imask;
1157 int cap, err = -ENOMEM;
1158 struct net_device *otherdev = hw->dev[sky2->port^1];
1161 * On dual port PCI-X card, there is an problem where status
1162 * can be received out of order due to split transactions
1164 if (otherdev && netif_running(otherdev) &&
1165 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1166 struct sky2_port *osky2 = netdev_priv(otherdev);
1169 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1170 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1171 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1177 if (netif_msg_ifup(sky2))
1178 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
1180 /* must be power of 2 */
1181 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1183 sizeof(struct sky2_tx_le),
1188 sky2->tx_ring = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info),
1192 sky2->tx_prod = sky2->tx_cons = 0;
1194 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1198 memset(sky2->rx_le, 0, RX_LE_BYTES);
1200 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1205 sky2_phy_power(hw, port, 1);
1207 sky2_mac_init(hw, port);
1209 /* Determine available ram buffer space (in 4K blocks).
1210 * Note: not sure about the FE setting below yet
1212 if (hw->chip_id == CHIP_ID_YUKON_FE)
1215 ramsize = sky2_read8(hw, B2_E_0);
1217 /* Give transmitter one third (rounded up) */
1218 rxspace = ramsize - (ramsize + 2) / 3;
1220 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1221 sky2_ramset(hw, txqaddr[port], rxspace, ramsize);
1223 /* Make sure SyncQ is disabled */
1224 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1227 sky2_qset(hw, txqaddr[port]);
1229 /* Set almost empty threshold */
1230 if (hw->chip_id == CHIP_ID_YUKON_EC_U
1231 && hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1232 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), 0x1a0);
1234 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1237 err = sky2_rx_start(sky2);
1241 /* Enable interrupts from phy/mac for port */
1242 imask = sky2_read32(hw, B0_IMSK);
1243 imask |= portirq_msk[port];
1244 sky2_write32(hw, B0_IMSK, imask);
1250 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1251 sky2->rx_le, sky2->rx_le_map);
1255 pci_free_consistent(hw->pdev,
1256 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1257 sky2->tx_le, sky2->tx_le_map);
1260 kfree(sky2->tx_ring);
1261 kfree(sky2->rx_ring);
1263 sky2->tx_ring = NULL;
1264 sky2->rx_ring = NULL;
1268 /* Modular subtraction in ring */
1269 static inline int tx_dist(unsigned tail, unsigned head)
1271 return (head - tail) & (TX_RING_SIZE - 1);
1274 /* Number of list elements available for next tx */
1275 static inline int tx_avail(const struct sky2_port *sky2)
1277 return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
1280 /* Estimate of number of transmit list elements required */
1281 static unsigned tx_le_req(const struct sk_buff *skb)
1285 count = sizeof(dma_addr_t) / sizeof(u32);
1286 count += skb_shinfo(skb)->nr_frags * count;
1288 if (skb_is_gso(skb))
1291 if (skb->ip_summed == CHECKSUM_PARTIAL)
1298 * Put one packet in ring for transmit.
1299 * A single packet can generate multiple list elements, and
1300 * the number of ring elements will probably be less than the number
1301 * of list elements used.
1303 static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1305 struct sky2_port *sky2 = netdev_priv(dev);
1306 struct sky2_hw *hw = sky2->hw;
1307 struct sky2_tx_le *le = NULL;
1308 struct tx_ring_info *re;
1315 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1316 return NETDEV_TX_BUSY;
1318 if (unlikely(netif_msg_tx_queued(sky2)))
1319 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1320 dev->name, sky2->tx_prod, skb->len);
1322 len = skb_headlen(skb);
1323 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1324 addr64 = high32(mapping);
1326 /* Send high bits if changed or crosses boundary */
1327 if (addr64 != sky2->tx_addr64 || high32(mapping + len) != sky2->tx_addr64) {
1328 le = get_tx_le(sky2);
1329 le->addr = cpu_to_le32(addr64);
1330 le->opcode = OP_ADDR64 | HW_OWNER;
1331 sky2->tx_addr64 = high32(mapping + len);
1334 /* Check for TCP Segmentation Offload */
1335 mss = skb_shinfo(skb)->gso_size;
1337 mss += ((skb->h.th->doff - 5) * 4); /* TCP options */
1338 mss += (skb->nh.iph->ihl * 4) + sizeof(struct tcphdr);
1341 if (mss != sky2->tx_last_mss) {
1342 le = get_tx_le(sky2);
1343 le->addr = cpu_to_le32(mss);
1344 le->opcode = OP_LRGLEN | HW_OWNER;
1345 sky2->tx_last_mss = mss;
1350 #ifdef SKY2_VLAN_TAG_USED
1351 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1352 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1354 le = get_tx_le(sky2);
1356 le->opcode = OP_VLAN|HW_OWNER;
1358 le->opcode |= OP_VLAN;
1359 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1364 /* Handle TCP checksum offload */
1365 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1366 unsigned offset = skb->h.raw - skb->data;
1369 tcpsum = offset << 16; /* sum start */
1370 tcpsum |= offset + skb->csum; /* sum write */
1372 ctrl = CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1373 if (skb->nh.iph->protocol == IPPROTO_UDP)
1376 if (tcpsum != sky2->tx_tcpsum) {
1377 sky2->tx_tcpsum = tcpsum;
1379 le = get_tx_le(sky2);
1380 le->addr = cpu_to_le32(tcpsum);
1381 le->length = 0; /* initial checksum value */
1382 le->ctrl = 1; /* one packet */
1383 le->opcode = OP_TCPLISW | HW_OWNER;
1387 le = get_tx_le(sky2);
1388 le->addr = cpu_to_le32((u32) mapping);
1389 le->length = cpu_to_le16(len);
1391 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1393 re = tx_le_re(sky2, le);
1395 pci_unmap_addr_set(re, mapaddr, mapping);
1396 pci_unmap_len_set(re, maplen, len);
1398 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1399 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1401 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1402 frag->size, PCI_DMA_TODEVICE);
1403 addr64 = high32(mapping);
1404 if (addr64 != sky2->tx_addr64) {
1405 le = get_tx_le(sky2);
1406 le->addr = cpu_to_le32(addr64);
1408 le->opcode = OP_ADDR64 | HW_OWNER;
1409 sky2->tx_addr64 = addr64;
1412 le = get_tx_le(sky2);
1413 le->addr = cpu_to_le32((u32) mapping);
1414 le->length = cpu_to_le16(frag->size);
1416 le->opcode = OP_BUFFER | HW_OWNER;
1418 re = tx_le_re(sky2, le);
1420 pci_unmap_addr_set(re, mapaddr, mapping);
1421 pci_unmap_len_set(re, maplen, frag->size);
1426 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1427 netif_stop_queue(dev);
1429 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1431 dev->trans_start = jiffies;
1432 return NETDEV_TX_OK;
1436 * Free ring elements from starting at tx_cons until "done"
1438 * NB: the hardware will tell us about partial completion of multi-part
1439 * buffers so make sure not to free skb to early.
1441 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1443 struct net_device *dev = sky2->netdev;
1444 struct pci_dev *pdev = sky2->hw->pdev;
1447 BUG_ON(done >= TX_RING_SIZE);
1449 for (idx = sky2->tx_cons; idx != done;
1450 idx = RING_NEXT(idx, TX_RING_SIZE)) {
1451 struct sky2_tx_le *le = sky2->tx_le + idx;
1452 struct tx_ring_info *re = sky2->tx_ring + idx;
1454 switch(le->opcode & ~HW_OWNER) {
1457 pci_unmap_single(pdev,
1458 pci_unmap_addr(re, mapaddr),
1459 pci_unmap_len(re, maplen),
1463 pci_unmap_page(pdev, pci_unmap_addr(re, mapaddr),
1464 pci_unmap_len(re, maplen),
1469 if (le->ctrl & EOP) {
1470 if (unlikely(netif_msg_tx_done(sky2)))
1471 printk(KERN_DEBUG "%s: tx done %u\n",
1473 dev_kfree_skb(re->skb);
1476 le->opcode = 0; /* paranoia */
1479 sky2->tx_cons = idx;
1480 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
1481 netif_wake_queue(dev);
1484 /* Cleanup all untransmitted buffers, assume transmitter not running */
1485 static void sky2_tx_clean(struct net_device *dev)
1487 struct sky2_port *sky2 = netdev_priv(dev);
1489 netif_tx_lock_bh(dev);
1490 sky2_tx_complete(sky2, sky2->tx_prod);
1491 netif_tx_unlock_bh(dev);
1494 /* Network shutdown */
1495 static int sky2_down(struct net_device *dev)
1497 struct sky2_port *sky2 = netdev_priv(dev);
1498 struct sky2_hw *hw = sky2->hw;
1499 unsigned port = sky2->port;
1503 /* Never really got started! */
1507 if (netif_msg_ifdown(sky2))
1508 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1510 /* Stop more packets from being queued */
1511 netif_stop_queue(dev);
1513 /* Disable port IRQ */
1514 imask = sky2_read32(hw, B0_IMSK);
1515 imask &= ~portirq_msk[port];
1516 sky2_write32(hw, B0_IMSK, imask);
1518 sky2_gmac_reset(hw, port);
1520 /* Stop transmitter */
1521 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1522 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1524 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1525 RB_RST_SET | RB_DIS_OP_MD);
1527 /* WA for dev. #4.209 */
1528 if (hw->chip_id == CHIP_ID_YUKON_EC_U
1529 && hw->chip_rev == CHIP_REV_YU_EC_U_A1)
1530 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1531 sky2->speed != SPEED_1000 ?
1532 TX_STFW_ENA : TX_STFW_DIS);
1534 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1535 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1536 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1538 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1540 /* Workaround shared GMAC reset */
1541 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1542 && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1543 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1545 /* Disable Force Sync bit and Enable Alloc bit */
1546 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1547 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1549 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1550 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1551 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1553 /* Reset the PCI FIFO of the async Tx queue */
1554 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1555 BMU_RST_SET | BMU_FIFO_RST);
1557 /* Reset the Tx prefetch units */
1558 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1561 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1565 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1566 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1568 sky2_phy_power(hw, port, 0);
1570 /* turn off LED's */
1571 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1573 synchronize_irq(hw->pdev->irq);
1576 sky2_rx_clean(sky2);
1578 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1579 sky2->rx_le, sky2->rx_le_map);
1580 kfree(sky2->rx_ring);
1582 pci_free_consistent(hw->pdev,
1583 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1584 sky2->tx_le, sky2->tx_le_map);
1585 kfree(sky2->tx_ring);
1590 sky2->rx_ring = NULL;
1591 sky2->tx_ring = NULL;
1596 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1598 if (!sky2_is_copper(hw))
1601 if (hw->chip_id == CHIP_ID_YUKON_FE)
1602 return (aux & PHY_M_PS_SPEED_100) ? SPEED_100 : SPEED_10;
1604 switch (aux & PHY_M_PS_SPEED_MSK) {
1605 case PHY_M_PS_SPEED_1000:
1607 case PHY_M_PS_SPEED_100:
1614 static void sky2_link_up(struct sky2_port *sky2)
1616 struct sky2_hw *hw = sky2->hw;
1617 unsigned port = sky2->port;
1621 reg = gma_read16(hw, port, GM_GP_CTRL);
1622 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1623 gma_write16(hw, port, GM_GP_CTRL, reg);
1625 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1627 netif_carrier_on(sky2->netdev);
1628 netif_wake_queue(sky2->netdev);
1630 /* Turn on link LED */
1631 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1632 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1634 if (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U) {
1635 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
1636 u16 led = PHY_M_LEDC_LOS_CTRL(1); /* link active */
1638 switch(sky2->speed) {
1640 led |= PHY_M_LEDC_INIT_CTRL(7);
1644 led |= PHY_M_LEDC_STA1_CTRL(7);
1648 led |= PHY_M_LEDC_STA0_CTRL(7);
1652 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
1653 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, led);
1654 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
1657 if (netif_msg_link(sky2))
1658 printk(KERN_INFO PFX
1659 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1660 sky2->netdev->name, sky2->speed,
1661 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1662 (sky2->tx_pause && sky2->rx_pause) ? "both" :
1663 sky2->tx_pause ? "tx" : sky2->rx_pause ? "rx" : "none");
1666 static void sky2_link_down(struct sky2_port *sky2)
1668 struct sky2_hw *hw = sky2->hw;
1669 unsigned port = sky2->port;
1672 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1674 reg = gma_read16(hw, port, GM_GP_CTRL);
1675 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1676 gma_write16(hw, port, GM_GP_CTRL, reg);
1678 if (sky2->rx_pause && !sky2->tx_pause) {
1679 /* restore Asymmetric Pause bit */
1680 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV,
1681 gm_phy_read(hw, port, PHY_MARV_AUNE_ADV)
1685 netif_carrier_off(sky2->netdev);
1686 netif_stop_queue(sky2->netdev);
1688 /* Turn on link LED */
1689 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1691 if (netif_msg_link(sky2))
1692 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
1694 sky2_phy_init(hw, port);
1697 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
1699 struct sky2_hw *hw = sky2->hw;
1700 unsigned port = sky2->port;
1703 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
1705 if (lpa & PHY_M_AN_RF) {
1706 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
1710 if (!(aux & PHY_M_PS_SPDUP_RES)) {
1711 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
1712 sky2->netdev->name);
1716 sky2->speed = sky2_phy_speed(hw, aux);
1717 if (sky2->speed == SPEED_1000) {
1718 u16 ctl2 = gm_phy_read(hw, port, PHY_MARV_1000T_CTRL);
1719 u16 lpa2 = gm_phy_read(hw, port, PHY_MARV_1000T_STAT);
1720 if (lpa2 & PHY_B_1000S_MSF) {
1721 printk(KERN_ERR PFX "%s: master/slave fault",
1722 sky2->netdev->name);
1726 if ((ctl2 & PHY_M_1000C_AFD) && (lpa2 & PHY_B_1000S_LP_FD))
1727 sky2->duplex = DUPLEX_FULL;
1729 sky2->duplex = DUPLEX_HALF;
1731 u16 adv = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
1732 if ((aux & adv) & PHY_AN_FULL)
1733 sky2->duplex = DUPLEX_FULL;
1735 sky2->duplex = DUPLEX_HALF;
1738 /* Pause bits are offset (9..8) */
1739 if (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)
1742 sky2->rx_pause = (aux & PHY_M_PS_RX_P_EN) != 0;
1743 sky2->tx_pause = (aux & PHY_M_PS_TX_P_EN) != 0;
1745 if (sky2->duplex == DUPLEX_HALF && sky2->speed != SPEED_1000
1746 && hw->chip_id != CHIP_ID_YUKON_EC_U)
1747 sky2->rx_pause = sky2->tx_pause = 0;
1749 if (sky2->rx_pause || sky2->tx_pause)
1750 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
1752 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1757 /* Interrupt from PHY */
1758 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
1760 struct net_device *dev = hw->dev[port];
1761 struct sky2_port *sky2 = netdev_priv(dev);
1762 u16 istatus, phystat;
1764 if (!netif_running(dev))
1767 spin_lock(&sky2->phy_lock);
1768 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
1769 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
1771 if (netif_msg_intr(sky2))
1772 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
1773 sky2->netdev->name, istatus, phystat);
1775 if (sky2->autoneg == AUTONEG_ENABLE && (istatus & PHY_M_IS_AN_COMPL)) {
1776 if (sky2_autoneg_done(sky2, phystat) == 0)
1781 if (istatus & PHY_M_IS_LSP_CHANGE)
1782 sky2->speed = sky2_phy_speed(hw, phystat);
1784 if (istatus & PHY_M_IS_DUP_CHANGE)
1786 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1788 if (istatus & PHY_M_IS_LST_CHANGE) {
1789 if (phystat & PHY_M_PS_LINK_UP)
1792 sky2_link_down(sky2);
1795 spin_unlock(&sky2->phy_lock);
1799 /* Transmit timeout is only called if we are running, carries is up
1800 * and tx queue is full (stopped).
1802 static void sky2_tx_timeout(struct net_device *dev)
1804 struct sky2_port *sky2 = netdev_priv(dev);
1805 struct sky2_hw *hw = sky2->hw;
1806 unsigned txq = txqaddr[sky2->port];
1809 if (netif_msg_timer(sky2))
1810 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
1812 report = sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX);
1813 done = sky2_read16(hw, Q_ADDR(txq, Q_DONE));
1815 printk(KERN_DEBUG PFX "%s: transmit ring %u .. %u report=%u done=%u\n",
1817 sky2->tx_cons, sky2->tx_prod, report, done);
1819 if (report != done) {
1820 printk(KERN_INFO PFX "status burst pending (irq moderation?)\n");
1822 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
1823 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
1824 } else if (report != sky2->tx_cons) {
1825 printk(KERN_INFO PFX "status report lost?\n");
1827 netif_tx_lock_bh(dev);
1828 sky2_tx_complete(sky2, report);
1829 netif_tx_unlock_bh(dev);
1831 printk(KERN_INFO PFX "hardware hung? flushing\n");
1833 sky2_write32(hw, Q_ADDR(txq, Q_CSR), BMU_STOP);
1834 sky2_write32(hw, Y2_QADDR(txq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1839 sky2_prefetch_init(hw, txq, sky2->tx_le_map, TX_RING_SIZE - 1);
1843 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
1845 struct sky2_port *sky2 = netdev_priv(dev);
1846 struct sky2_hw *hw = sky2->hw;
1851 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
1854 if (hw->chip_id == CHIP_ID_YUKON_EC_U && new_mtu > ETH_DATA_LEN)
1857 if (!netif_running(dev)) {
1862 imask = sky2_read32(hw, B0_IMSK);
1863 sky2_write32(hw, B0_IMSK, 0);
1865 dev->trans_start = jiffies; /* prevent tx timeout */
1866 netif_stop_queue(dev);
1867 netif_poll_disable(hw->dev[0]);
1869 synchronize_irq(hw->pdev->irq);
1871 ctl = gma_read16(hw, sky2->port, GM_GP_CTRL);
1872 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
1874 sky2_rx_clean(sky2);
1878 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
1879 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
1881 if (dev->mtu > ETH_DATA_LEN)
1882 mode |= GM_SMOD_JUMBO_ENA;
1884 gma_write16(hw, sky2->port, GM_SERIAL_MODE, mode);
1886 sky2_write8(hw, RB_ADDR(rxqaddr[sky2->port], RB_CTRL), RB_ENA_OP_MD);
1888 err = sky2_rx_start(sky2);
1889 sky2_write32(hw, B0_IMSK, imask);
1894 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl);
1896 netif_poll_enable(hw->dev[0]);
1897 netif_wake_queue(dev);
1903 /* For small just reuse existing skb for next receive */
1904 static struct sk_buff *receive_copy(struct sky2_port *sky2,
1905 const struct rx_ring_info *re,
1908 struct sk_buff *skb;
1910 skb = netdev_alloc_skb(sky2->netdev, length + 2);
1912 skb_reserve(skb, 2);
1913 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
1914 length, PCI_DMA_FROMDEVICE);
1915 memcpy(skb->data, re->skb->data, length);
1916 skb->ip_summed = re->skb->ip_summed;
1917 skb->csum = re->skb->csum;
1918 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
1919 length, PCI_DMA_FROMDEVICE);
1920 re->skb->ip_summed = CHECKSUM_NONE;
1921 skb_put(skb, length);
1926 /* Adjust length of skb with fragments to match received data */
1927 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
1928 unsigned int length)
1933 /* put header into skb */
1934 size = min(length, hdr_space);
1939 num_frags = skb_shinfo(skb)->nr_frags;
1940 for (i = 0; i < num_frags; i++) {
1941 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1944 /* don't need this page */
1945 __free_page(frag->page);
1946 --skb_shinfo(skb)->nr_frags;
1948 size = min(length, (unsigned) PAGE_SIZE);
1951 skb->data_len += size;
1952 skb->truesize += size;
1959 /* Normal packet - take skb from ring element and put in a new one */
1960 static struct sk_buff *receive_new(struct sky2_port *sky2,
1961 struct rx_ring_info *re,
1962 unsigned int length)
1964 struct sk_buff *skb, *nskb;
1965 unsigned hdr_space = sky2->rx_data_size;
1967 pr_debug(PFX "receive new length=%d\n", length);
1969 /* Don't be tricky about reusing pages (yet) */
1970 nskb = sky2_rx_alloc(sky2);
1971 if (unlikely(!nskb))
1975 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1977 prefetch(skb->data);
1979 sky2_rx_map_skb(sky2->hw->pdev, re, hdr_space);
1981 if (skb_shinfo(skb)->nr_frags)
1982 skb_put_frags(skb, hdr_space, length);
1984 skb_put(skb, length);
1989 * Receive one packet.
1990 * For larger packets, get new buffer.
1992 static struct sk_buff *sky2_receive(struct net_device *dev,
1993 u16 length, u32 status)
1995 struct sky2_port *sky2 = netdev_priv(dev);
1996 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
1997 struct sk_buff *skb = NULL;
1999 if (unlikely(netif_msg_rx_status(sky2)))
2000 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
2001 dev->name, sky2->rx_next, status, length);
2003 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2004 prefetch(sky2->rx_ring + sky2->rx_next);
2006 if (status & GMR_FS_ANY_ERR)
2009 if (!(status & GMR_FS_RX_OK))
2012 if (length > dev->mtu + ETH_HLEN)
2015 if (length < copybreak)
2016 skb = receive_copy(sky2, re, length);
2018 skb = receive_new(sky2, re, length);
2020 sky2_rx_submit(sky2, re);
2025 ++sky2->net_stats.rx_over_errors;
2029 ++sky2->net_stats.rx_errors;
2031 if (netif_msg_rx_err(sky2) && net_ratelimit())
2032 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
2033 dev->name, status, length);
2035 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
2036 sky2->net_stats.rx_length_errors++;
2037 if (status & GMR_FS_FRAGMENT)
2038 sky2->net_stats.rx_frame_errors++;
2039 if (status & GMR_FS_CRC_ERR)
2040 sky2->net_stats.rx_crc_errors++;
2041 if (status & GMR_FS_RX_FF_OV)
2042 sky2->net_stats.rx_fifo_errors++;
2047 /* Transmit complete */
2048 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2050 struct sky2_port *sky2 = netdev_priv(dev);
2052 if (netif_running(dev)) {
2054 sky2_tx_complete(sky2, last);
2055 netif_tx_unlock(dev);
2059 /* Process status response ring */
2060 static int sky2_status_intr(struct sky2_hw *hw, int to_do)
2062 struct sky2_port *sky2;
2064 unsigned buf_write[2] = { 0, 0 };
2065 u16 hwidx = sky2_read16(hw, STAT_PUT_IDX);
2069 while (hw->st_idx != hwidx) {
2070 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2071 struct net_device *dev;
2072 struct sk_buff *skb;
2076 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
2078 BUG_ON(le->link >= 2);
2079 dev = hw->dev[le->link];
2081 sky2 = netdev_priv(dev);
2082 length = le16_to_cpu(le->length);
2083 status = le32_to_cpu(le->status);
2085 switch (le->opcode & ~HW_OWNER) {
2087 skb = sky2_receive(dev, length, status);
2091 skb->protocol = eth_type_trans(skb, dev);
2092 dev->last_rx = jiffies;
2094 #ifdef SKY2_VLAN_TAG_USED
2095 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
2096 vlan_hwaccel_receive_skb(skb,
2098 be16_to_cpu(sky2->rx_tag));
2101 netif_receive_skb(skb);
2103 /* Update receiver after 16 frames */
2104 if (++buf_write[le->link] == RX_BUF_WRITE) {
2105 sky2_put_idx(hw, rxqaddr[le->link],
2107 buf_write[le->link] = 0;
2110 /* Stop after net poll weight */
2111 if (++work_done >= to_do)
2115 #ifdef SKY2_VLAN_TAG_USED
2117 sky2->rx_tag = length;
2121 sky2->rx_tag = length;
2125 skb = sky2->rx_ring[sky2->rx_next].skb;
2126 skb->ip_summed = CHECKSUM_COMPLETE;
2127 skb->csum = status & 0xffff;
2131 /* TX index reports status for both ports */
2132 BUILD_BUG_ON(TX_RING_SIZE > 0x1000);
2133 sky2_tx_done(hw->dev[0], status & 0xfff);
2135 sky2_tx_done(hw->dev[1],
2136 ((status >> 24) & 0xff)
2137 | (u16)(length & 0xf) << 8);
2141 if (net_ratelimit())
2142 printk(KERN_WARNING PFX
2143 "unknown status opcode 0x%x\n", le->opcode);
2148 /* Fully processed status ring so clear irq */
2149 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2153 sky2 = netdev_priv(hw->dev[0]);
2154 sky2_put_idx(hw, Q_R1, sky2->rx_put);
2158 sky2 = netdev_priv(hw->dev[1]);
2159 sky2_put_idx(hw, Q_R2, sky2->rx_put);
2165 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2167 struct net_device *dev = hw->dev[port];
2169 if (net_ratelimit())
2170 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
2173 if (status & Y2_IS_PAR_RD1) {
2174 if (net_ratelimit())
2175 printk(KERN_ERR PFX "%s: ram data read parity error\n",
2178 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2181 if (status & Y2_IS_PAR_WR1) {
2182 if (net_ratelimit())
2183 printk(KERN_ERR PFX "%s: ram data write parity error\n",
2186 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2189 if (status & Y2_IS_PAR_MAC1) {
2190 if (net_ratelimit())
2191 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
2192 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2195 if (status & Y2_IS_PAR_RX1) {
2196 if (net_ratelimit())
2197 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
2198 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2201 if (status & Y2_IS_TCP_TXA1) {
2202 if (net_ratelimit())
2203 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
2205 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2209 static void sky2_hw_intr(struct sky2_hw *hw)
2211 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2213 if (status & Y2_IS_TIST_OV)
2214 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2216 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2219 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2220 if (net_ratelimit())
2221 printk(KERN_ERR PFX "%s: pci hw error (0x%x)\n",
2222 pci_name(hw->pdev), pci_err);
2224 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2225 sky2_pci_write16(hw, PCI_STATUS,
2226 pci_err | PCI_STATUS_ERROR_BITS);
2227 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2230 if (status & Y2_IS_PCI_EXP) {
2231 /* PCI-Express uncorrectable Error occurred */
2234 pex_err = sky2_pci_read32(hw, PEX_UNC_ERR_STAT);
2236 if (net_ratelimit())
2237 printk(KERN_ERR PFX "%s: pci express error (0x%x)\n",
2238 pci_name(hw->pdev), pex_err);
2240 /* clear the interrupt */
2241 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2242 sky2_pci_write32(hw, PEX_UNC_ERR_STAT,
2244 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2246 if (pex_err & PEX_FATAL_ERRORS) {
2247 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2248 hwmsk &= ~Y2_IS_PCI_EXP;
2249 sky2_write32(hw, B0_HWE_IMSK, hwmsk);
2253 if (status & Y2_HWE_L1_MASK)
2254 sky2_hw_error(hw, 0, status);
2256 if (status & Y2_HWE_L1_MASK)
2257 sky2_hw_error(hw, 1, status);
2260 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2262 struct net_device *dev = hw->dev[port];
2263 struct sky2_port *sky2 = netdev_priv(dev);
2264 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2266 if (netif_msg_intr(sky2))
2267 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2270 if (status & GM_IS_RX_FF_OR) {
2271 ++sky2->net_stats.rx_fifo_errors;
2272 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2275 if (status & GM_IS_TX_FF_UR) {
2276 ++sky2->net_stats.tx_fifo_errors;
2277 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2281 /* This should never happen it is a fatal situation */
2282 static void sky2_descriptor_error(struct sky2_hw *hw, unsigned port,
2283 const char *rxtx, u32 mask)
2285 struct net_device *dev = hw->dev[port];
2286 struct sky2_port *sky2 = netdev_priv(dev);
2289 printk(KERN_ERR PFX "%s: %s descriptor error (hardware problem)\n",
2290 dev ? dev->name : "<not registered>", rxtx);
2292 imask = sky2_read32(hw, B0_IMSK);
2294 sky2_write32(hw, B0_IMSK, imask);
2297 spin_lock(&sky2->phy_lock);
2298 sky2_link_down(sky2);
2299 spin_unlock(&sky2->phy_lock);
2303 /* If idle then force a fake soft NAPI poll once a second
2304 * to work around cases where sharing an edge triggered interrupt.
2306 static inline void sky2_idle_start(struct sky2_hw *hw)
2308 if (idle_timeout > 0)
2309 mod_timer(&hw->idle_timer,
2310 jiffies + msecs_to_jiffies(idle_timeout));
2313 static void sky2_idle(unsigned long arg)
2315 struct sky2_hw *hw = (struct sky2_hw *) arg;
2316 struct net_device *dev = hw->dev[0];
2318 if (__netif_rx_schedule_prep(dev))
2319 __netif_rx_schedule(dev);
2321 mod_timer(&hw->idle_timer, jiffies + msecs_to_jiffies(idle_timeout));
2325 static int sky2_poll(struct net_device *dev0, int *budget)
2327 struct sky2_hw *hw = ((struct sky2_port *) netdev_priv(dev0))->hw;
2328 int work_limit = min(dev0->quota, *budget);
2330 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2332 if (status & Y2_IS_HW_ERR)
2335 if (status & Y2_IS_IRQ_PHY1)
2336 sky2_phy_intr(hw, 0);
2338 if (status & Y2_IS_IRQ_PHY2)
2339 sky2_phy_intr(hw, 1);
2341 if (status & Y2_IS_IRQ_MAC1)
2342 sky2_mac_intr(hw, 0);
2344 if (status & Y2_IS_IRQ_MAC2)
2345 sky2_mac_intr(hw, 1);
2347 if (status & Y2_IS_CHK_RX1)
2348 sky2_descriptor_error(hw, 0, "receive", Y2_IS_CHK_RX1);
2350 if (status & Y2_IS_CHK_RX2)
2351 sky2_descriptor_error(hw, 1, "receive", Y2_IS_CHK_RX2);
2353 if (status & Y2_IS_CHK_TXA1)
2354 sky2_descriptor_error(hw, 0, "transmit", Y2_IS_CHK_TXA1);
2356 if (status & Y2_IS_CHK_TXA2)
2357 sky2_descriptor_error(hw, 1, "transmit", Y2_IS_CHK_TXA2);
2359 work_done = sky2_status_intr(hw, work_limit);
2360 if (work_done < work_limit) {
2361 netif_rx_complete(dev0);
2363 sky2_read32(hw, B0_Y2_SP_LISR);
2366 *budget -= work_done;
2367 dev0->quota -= work_done;
2372 static irqreturn_t sky2_intr(int irq, void *dev_id)
2374 struct sky2_hw *hw = dev_id;
2375 struct net_device *dev0 = hw->dev[0];
2378 /* Reading this mask interrupts as side effect */
2379 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2380 if (status == 0 || status == ~0)
2383 prefetch(&hw->st_le[hw->st_idx]);
2384 if (likely(__netif_rx_schedule_prep(dev0)))
2385 __netif_rx_schedule(dev0);
2390 #ifdef CONFIG_NET_POLL_CONTROLLER
2391 static void sky2_netpoll(struct net_device *dev)
2393 struct sky2_port *sky2 = netdev_priv(dev);
2394 struct net_device *dev0 = sky2->hw->dev[0];
2396 if (netif_running(dev) && __netif_rx_schedule_prep(dev0))
2397 __netif_rx_schedule(dev0);
2401 /* Chip internal frequency for clock calculations */
2402 static inline u32 sky2_mhz(const struct sky2_hw *hw)
2404 switch (hw->chip_id) {
2405 case CHIP_ID_YUKON_EC:
2406 case CHIP_ID_YUKON_EC_U:
2407 return 125; /* 125 Mhz */
2408 case CHIP_ID_YUKON_FE:
2409 return 100; /* 100 Mhz */
2410 default: /* YUKON_XL */
2411 return 156; /* 156 Mhz */
2415 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2417 return sky2_mhz(hw) * us;
2420 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2422 return clk / sky2_mhz(hw);
2426 static int sky2_reset(struct sky2_hw *hw)
2432 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2434 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2435 if (hw->chip_id < CHIP_ID_YUKON_XL || hw->chip_id > CHIP_ID_YUKON_FE) {
2436 printk(KERN_ERR PFX "%s: unsupported chip type 0x%x\n",
2437 pci_name(hw->pdev), hw->chip_id);
2441 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2443 /* This rev is really old, and requires untested workarounds */
2444 if (hw->chip_id == CHIP_ID_YUKON_EC && hw->chip_rev == CHIP_REV_YU_EC_A1) {
2445 printk(KERN_ERR PFX "%s: unsupported revision Yukon-%s (0x%x) rev %d\n",
2446 pci_name(hw->pdev), yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
2447 hw->chip_id, hw->chip_rev);
2452 if (hw->chip_id <= CHIP_ID_YUKON_EC) {
2453 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2454 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2458 sky2_write8(hw, B0_CTST, CS_RST_SET);
2459 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2461 /* clear PCI errors, if any */
2462 status = sky2_pci_read16(hw, PCI_STATUS);
2464 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2465 sky2_pci_write16(hw, PCI_STATUS, status | PCI_STATUS_ERROR_BITS);
2468 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2470 /* clear any PEX errors */
2471 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
2472 sky2_pci_write32(hw, PEX_UNC_ERR_STAT, 0xffffffffUL);
2475 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
2477 t8 = sky2_read8(hw, B2_Y2_HW_RES);
2478 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
2479 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2483 sky2_set_power_state(hw, PCI_D0);
2485 for (i = 0; i < hw->ports; i++) {
2486 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2487 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2490 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2492 /* Clear I2C IRQ noise */
2493 sky2_write32(hw, B2_I2C_IRQ, 1);
2495 /* turn off hardware timer (unused) */
2496 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2497 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
2499 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
2501 /* Turn off descriptor polling */
2502 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
2504 /* Turn off receive timestamp */
2505 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
2506 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2508 /* enable the Tx Arbiters */
2509 for (i = 0; i < hw->ports; i++)
2510 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
2512 /* Initialize ram interface */
2513 for (i = 0; i < hw->ports; i++) {
2514 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
2516 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
2517 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
2518 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
2519 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
2520 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
2521 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
2522 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
2523 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
2524 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
2525 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
2526 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
2527 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
2530 sky2_write32(hw, B0_HWE_IMSK, Y2_HWE_ALL_MASK);
2532 for (i = 0; i < hw->ports; i++)
2533 sky2_gmac_reset(hw, i);
2535 memset(hw->st_le, 0, STATUS_LE_BYTES);
2538 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
2539 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
2541 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
2542 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
2544 /* Set the list last index */
2545 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
2547 sky2_write16(hw, STAT_TX_IDX_TH, 10);
2548 sky2_write8(hw, STAT_FIFO_WM, 16);
2550 /* set Status-FIFO ISR watermark */
2551 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
2552 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
2554 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
2556 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
2557 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
2558 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
2560 /* enable status unit */
2561 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
2563 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2564 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2565 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2570 static u32 sky2_supported_modes(const struct sky2_hw *hw)
2572 if (sky2_is_copper(hw)) {
2573 u32 modes = SUPPORTED_10baseT_Half
2574 | SUPPORTED_10baseT_Full
2575 | SUPPORTED_100baseT_Half
2576 | SUPPORTED_100baseT_Full
2577 | SUPPORTED_Autoneg | SUPPORTED_TP;
2579 if (hw->chip_id != CHIP_ID_YUKON_FE)
2580 modes |= SUPPORTED_1000baseT_Half
2581 | SUPPORTED_1000baseT_Full;
2584 return SUPPORTED_1000baseT_Half
2585 | SUPPORTED_1000baseT_Full
2590 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2592 struct sky2_port *sky2 = netdev_priv(dev);
2593 struct sky2_hw *hw = sky2->hw;
2595 ecmd->transceiver = XCVR_INTERNAL;
2596 ecmd->supported = sky2_supported_modes(hw);
2597 ecmd->phy_address = PHY_ADDR_MARV;
2598 if (sky2_is_copper(hw)) {
2599 ecmd->supported = SUPPORTED_10baseT_Half
2600 | SUPPORTED_10baseT_Full
2601 | SUPPORTED_100baseT_Half
2602 | SUPPORTED_100baseT_Full
2603 | SUPPORTED_1000baseT_Half
2604 | SUPPORTED_1000baseT_Full
2605 | SUPPORTED_Autoneg | SUPPORTED_TP;
2606 ecmd->port = PORT_TP;
2607 ecmd->speed = sky2->speed;
2609 ecmd->speed = SPEED_1000;
2610 ecmd->port = PORT_FIBRE;
2613 ecmd->advertising = sky2->advertising;
2614 ecmd->autoneg = sky2->autoneg;
2615 ecmd->duplex = sky2->duplex;
2619 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2621 struct sky2_port *sky2 = netdev_priv(dev);
2622 const struct sky2_hw *hw = sky2->hw;
2623 u32 supported = sky2_supported_modes(hw);
2625 if (ecmd->autoneg == AUTONEG_ENABLE) {
2626 ecmd->advertising = supported;
2632 switch (ecmd->speed) {
2634 if (ecmd->duplex == DUPLEX_FULL)
2635 setting = SUPPORTED_1000baseT_Full;
2636 else if (ecmd->duplex == DUPLEX_HALF)
2637 setting = SUPPORTED_1000baseT_Half;
2642 if (ecmd->duplex == DUPLEX_FULL)
2643 setting = SUPPORTED_100baseT_Full;
2644 else if (ecmd->duplex == DUPLEX_HALF)
2645 setting = SUPPORTED_100baseT_Half;
2651 if (ecmd->duplex == DUPLEX_FULL)
2652 setting = SUPPORTED_10baseT_Full;
2653 else if (ecmd->duplex == DUPLEX_HALF)
2654 setting = SUPPORTED_10baseT_Half;
2662 if ((setting & supported) == 0)
2665 sky2->speed = ecmd->speed;
2666 sky2->duplex = ecmd->duplex;
2669 sky2->autoneg = ecmd->autoneg;
2670 sky2->advertising = ecmd->advertising;
2672 if (netif_running(dev))
2673 sky2_phy_reinit(sky2);
2678 static void sky2_get_drvinfo(struct net_device *dev,
2679 struct ethtool_drvinfo *info)
2681 struct sky2_port *sky2 = netdev_priv(dev);
2683 strcpy(info->driver, DRV_NAME);
2684 strcpy(info->version, DRV_VERSION);
2685 strcpy(info->fw_version, "N/A");
2686 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
2689 static const struct sky2_stat {
2690 char name[ETH_GSTRING_LEN];
2693 { "tx_bytes", GM_TXO_OK_HI },
2694 { "rx_bytes", GM_RXO_OK_HI },
2695 { "tx_broadcast", GM_TXF_BC_OK },
2696 { "rx_broadcast", GM_RXF_BC_OK },
2697 { "tx_multicast", GM_TXF_MC_OK },
2698 { "rx_multicast", GM_RXF_MC_OK },
2699 { "tx_unicast", GM_TXF_UC_OK },
2700 { "rx_unicast", GM_RXF_UC_OK },
2701 { "tx_mac_pause", GM_TXF_MPAUSE },
2702 { "rx_mac_pause", GM_RXF_MPAUSE },
2703 { "collisions", GM_TXF_COL },
2704 { "late_collision",GM_TXF_LAT_COL },
2705 { "aborted", GM_TXF_ABO_COL },
2706 { "single_collisions", GM_TXF_SNG_COL },
2707 { "multi_collisions", GM_TXF_MUL_COL },
2709 { "rx_short", GM_RXF_SHT },
2710 { "rx_runt", GM_RXE_FRAG },
2711 { "rx_64_byte_packets", GM_RXF_64B },
2712 { "rx_65_to_127_byte_packets", GM_RXF_127B },
2713 { "rx_128_to_255_byte_packets", GM_RXF_255B },
2714 { "rx_256_to_511_byte_packets", GM_RXF_511B },
2715 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
2716 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
2717 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
2718 { "rx_too_long", GM_RXF_LNG_ERR },
2719 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
2720 { "rx_jabber", GM_RXF_JAB_PKT },
2721 { "rx_fcs_error", GM_RXF_FCS_ERR },
2723 { "tx_64_byte_packets", GM_TXF_64B },
2724 { "tx_65_to_127_byte_packets", GM_TXF_127B },
2725 { "tx_128_to_255_byte_packets", GM_TXF_255B },
2726 { "tx_256_to_511_byte_packets", GM_TXF_511B },
2727 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
2728 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
2729 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
2730 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
2733 static u32 sky2_get_rx_csum(struct net_device *dev)
2735 struct sky2_port *sky2 = netdev_priv(dev);
2737 return sky2->rx_csum;
2740 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
2742 struct sky2_port *sky2 = netdev_priv(dev);
2744 sky2->rx_csum = data;
2746 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2747 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
2752 static u32 sky2_get_msglevel(struct net_device *netdev)
2754 struct sky2_port *sky2 = netdev_priv(netdev);
2755 return sky2->msg_enable;
2758 static int sky2_nway_reset(struct net_device *dev)
2760 struct sky2_port *sky2 = netdev_priv(dev);
2762 if (sky2->autoneg != AUTONEG_ENABLE)
2765 sky2_phy_reinit(sky2);
2770 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
2772 struct sky2_hw *hw = sky2->hw;
2773 unsigned port = sky2->port;
2776 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
2777 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
2778 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
2779 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
2781 for (i = 2; i < count; i++)
2782 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
2785 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
2787 struct sky2_port *sky2 = netdev_priv(netdev);
2788 sky2->msg_enable = value;
2791 static int sky2_get_stats_count(struct net_device *dev)
2793 return ARRAY_SIZE(sky2_stats);
2796 static void sky2_get_ethtool_stats(struct net_device *dev,
2797 struct ethtool_stats *stats, u64 * data)
2799 struct sky2_port *sky2 = netdev_priv(dev);
2801 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
2804 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
2808 switch (stringset) {
2810 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
2811 memcpy(data + i * ETH_GSTRING_LEN,
2812 sky2_stats[i].name, ETH_GSTRING_LEN);
2817 /* Use hardware MIB variables for critical path statistics and
2818 * transmit feedback not reported at interrupt.
2819 * Other errors are accounted for in interrupt handler.
2821 static struct net_device_stats *sky2_get_stats(struct net_device *dev)
2823 struct sky2_port *sky2 = netdev_priv(dev);
2826 sky2_phy_stats(sky2, data, ARRAY_SIZE(data));
2828 sky2->net_stats.tx_bytes = data[0];
2829 sky2->net_stats.rx_bytes = data[1];
2830 sky2->net_stats.tx_packets = data[2] + data[4] + data[6];
2831 sky2->net_stats.rx_packets = data[3] + data[5] + data[7];
2832 sky2->net_stats.multicast = data[3] + data[5];
2833 sky2->net_stats.collisions = data[10];
2834 sky2->net_stats.tx_aborted_errors = data[12];
2836 return &sky2->net_stats;
2839 static int sky2_set_mac_address(struct net_device *dev, void *p)
2841 struct sky2_port *sky2 = netdev_priv(dev);
2842 struct sky2_hw *hw = sky2->hw;
2843 unsigned port = sky2->port;
2844 const struct sockaddr *addr = p;
2846 if (!is_valid_ether_addr(addr->sa_data))
2847 return -EADDRNOTAVAIL;
2849 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
2850 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
2851 dev->dev_addr, ETH_ALEN);
2852 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
2853 dev->dev_addr, ETH_ALEN);
2855 /* virtual address for data */
2856 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
2858 /* physical address: used for pause frames */
2859 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
2864 static void sky2_set_multicast(struct net_device *dev)
2866 struct sky2_port *sky2 = netdev_priv(dev);
2867 struct sky2_hw *hw = sky2->hw;
2868 unsigned port = sky2->port;
2869 struct dev_mc_list *list = dev->mc_list;
2873 memset(filter, 0, sizeof(filter));
2875 reg = gma_read16(hw, port, GM_RX_CTRL);
2876 reg |= GM_RXCR_UCF_ENA;
2878 if (dev->flags & IFF_PROMISC) /* promiscuous */
2879 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
2880 else if ((dev->flags & IFF_ALLMULTI) || dev->mc_count > 16) /* all multicast */
2881 memset(filter, 0xff, sizeof(filter));
2882 else if (dev->mc_count == 0) /* no multicast */
2883 reg &= ~GM_RXCR_MCF_ENA;
2886 reg |= GM_RXCR_MCF_ENA;
2888 for (i = 0; list && i < dev->mc_count; i++, list = list->next) {
2889 u32 bit = ether_crc(ETH_ALEN, list->dmi_addr) & 0x3f;
2890 filter[bit / 8] |= 1 << (bit % 8);
2894 gma_write16(hw, port, GM_MC_ADDR_H1,
2895 (u16) filter[0] | ((u16) filter[1] << 8));
2896 gma_write16(hw, port, GM_MC_ADDR_H2,
2897 (u16) filter[2] | ((u16) filter[3] << 8));
2898 gma_write16(hw, port, GM_MC_ADDR_H3,
2899 (u16) filter[4] | ((u16) filter[5] << 8));
2900 gma_write16(hw, port, GM_MC_ADDR_H4,
2901 (u16) filter[6] | ((u16) filter[7] << 8));
2903 gma_write16(hw, port, GM_RX_CTRL, reg);
2906 /* Can have one global because blinking is controlled by
2907 * ethtool and that is always under RTNL mutex
2909 static void sky2_led(struct sky2_hw *hw, unsigned port, int on)
2913 switch (hw->chip_id) {
2914 case CHIP_ID_YUKON_XL:
2915 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2916 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2917 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
2918 on ? (PHY_M_LEDC_LOS_CTRL(1) |
2919 PHY_M_LEDC_INIT_CTRL(7) |
2920 PHY_M_LEDC_STA1_CTRL(7) |
2921 PHY_M_LEDC_STA0_CTRL(7))
2924 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2928 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
2929 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
2930 on ? PHY_M_LED_MO_DUP(MO_LED_ON) |
2931 PHY_M_LED_MO_10(MO_LED_ON) |
2932 PHY_M_LED_MO_100(MO_LED_ON) |
2933 PHY_M_LED_MO_1000(MO_LED_ON) |
2934 PHY_M_LED_MO_RX(MO_LED_ON)
2935 : PHY_M_LED_MO_DUP(MO_LED_OFF) |
2936 PHY_M_LED_MO_10(MO_LED_OFF) |
2937 PHY_M_LED_MO_100(MO_LED_OFF) |
2938 PHY_M_LED_MO_1000(MO_LED_OFF) |
2939 PHY_M_LED_MO_RX(MO_LED_OFF));
2944 /* blink LED's for finding board */
2945 static int sky2_phys_id(struct net_device *dev, u32 data)
2947 struct sky2_port *sky2 = netdev_priv(dev);
2948 struct sky2_hw *hw = sky2->hw;
2949 unsigned port = sky2->port;
2950 u16 ledctrl, ledover = 0;
2955 if (!data || data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ))
2956 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT);
2960 /* save initial values */
2961 spin_lock_bh(&sky2->phy_lock);
2962 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2963 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2964 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2965 ledctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
2966 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2968 ledctrl = gm_phy_read(hw, port, PHY_MARV_LED_CTRL);
2969 ledover = gm_phy_read(hw, port, PHY_MARV_LED_OVER);
2973 while (!interrupted && ms > 0) {
2974 sky2_led(hw, port, onoff);
2977 spin_unlock_bh(&sky2->phy_lock);
2978 interrupted = msleep_interruptible(250);
2979 spin_lock_bh(&sky2->phy_lock);
2984 /* resume regularly scheduled programming */
2985 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2986 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2987 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2988 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ledctrl);
2989 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2991 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
2992 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
2994 spin_unlock_bh(&sky2->phy_lock);
2999 static void sky2_get_pauseparam(struct net_device *dev,
3000 struct ethtool_pauseparam *ecmd)
3002 struct sky2_port *sky2 = netdev_priv(dev);
3004 ecmd->tx_pause = sky2->tx_pause;
3005 ecmd->rx_pause = sky2->rx_pause;
3006 ecmd->autoneg = sky2->autoneg;
3009 static int sky2_set_pauseparam(struct net_device *dev,
3010 struct ethtool_pauseparam *ecmd)
3012 struct sky2_port *sky2 = netdev_priv(dev);
3014 sky2->autoneg = ecmd->autoneg;
3015 sky2->tx_pause = ecmd->tx_pause != 0;
3016 sky2->rx_pause = ecmd->rx_pause != 0;
3018 sky2_phy_reinit(sky2);
3023 static int sky2_get_coalesce(struct net_device *dev,
3024 struct ethtool_coalesce *ecmd)
3026 struct sky2_port *sky2 = netdev_priv(dev);
3027 struct sky2_hw *hw = sky2->hw;
3029 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
3030 ecmd->tx_coalesce_usecs = 0;
3032 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
3033 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
3035 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
3037 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
3038 ecmd->rx_coalesce_usecs = 0;
3040 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
3041 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
3043 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
3045 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
3046 ecmd->rx_coalesce_usecs_irq = 0;
3048 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
3049 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
3052 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
3057 /* Note: this affect both ports */
3058 static int sky2_set_coalesce(struct net_device *dev,
3059 struct ethtool_coalesce *ecmd)
3061 struct sky2_port *sky2 = netdev_priv(dev);
3062 struct sky2_hw *hw = sky2->hw;
3063 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
3065 if (ecmd->tx_coalesce_usecs > tmax ||
3066 ecmd->rx_coalesce_usecs > tmax ||
3067 ecmd->rx_coalesce_usecs_irq > tmax)
3070 if (ecmd->tx_max_coalesced_frames >= TX_RING_SIZE-1)
3072 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
3074 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
3077 if (ecmd->tx_coalesce_usecs == 0)
3078 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
3080 sky2_write32(hw, STAT_TX_TIMER_INI,
3081 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
3082 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3084 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
3086 if (ecmd->rx_coalesce_usecs == 0)
3087 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
3089 sky2_write32(hw, STAT_LEV_TIMER_INI,
3090 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
3091 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3093 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
3095 if (ecmd->rx_coalesce_usecs_irq == 0)
3096 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
3098 sky2_write32(hw, STAT_ISR_TIMER_INI,
3099 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
3100 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3102 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
3106 static void sky2_get_ringparam(struct net_device *dev,
3107 struct ethtool_ringparam *ering)
3109 struct sky2_port *sky2 = netdev_priv(dev);
3111 ering->rx_max_pending = RX_MAX_PENDING;
3112 ering->rx_mini_max_pending = 0;
3113 ering->rx_jumbo_max_pending = 0;
3114 ering->tx_max_pending = TX_RING_SIZE - 1;
3116 ering->rx_pending = sky2->rx_pending;
3117 ering->rx_mini_pending = 0;
3118 ering->rx_jumbo_pending = 0;
3119 ering->tx_pending = sky2->tx_pending;
3122 static int sky2_set_ringparam(struct net_device *dev,
3123 struct ethtool_ringparam *ering)
3125 struct sky2_port *sky2 = netdev_priv(dev);
3128 if (ering->rx_pending > RX_MAX_PENDING ||
3129 ering->rx_pending < 8 ||
3130 ering->tx_pending < MAX_SKB_TX_LE ||
3131 ering->tx_pending > TX_RING_SIZE - 1)
3134 if (netif_running(dev))
3137 sky2->rx_pending = ering->rx_pending;
3138 sky2->tx_pending = ering->tx_pending;
3140 if (netif_running(dev)) {
3145 sky2_set_multicast(dev);
3151 static int sky2_get_regs_len(struct net_device *dev)
3157 * Returns copy of control register region
3158 * Note: access to the RAM address register set will cause timeouts.
3160 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
3163 const struct sky2_port *sky2 = netdev_priv(dev);
3164 const void __iomem *io = sky2->hw->regs;
3166 BUG_ON(regs->len < B3_RI_WTO_R1);
3168 memset(p, 0, regs->len);
3170 memcpy_fromio(p, io, B3_RAM_ADDR);
3172 memcpy_fromio(p + B3_RI_WTO_R1,
3174 regs->len - B3_RI_WTO_R1);
3177 static const struct ethtool_ops sky2_ethtool_ops = {
3178 .get_settings = sky2_get_settings,
3179 .set_settings = sky2_set_settings,
3180 .get_drvinfo = sky2_get_drvinfo,
3181 .get_msglevel = sky2_get_msglevel,
3182 .set_msglevel = sky2_set_msglevel,
3183 .nway_reset = sky2_nway_reset,
3184 .get_regs_len = sky2_get_regs_len,
3185 .get_regs = sky2_get_regs,
3186 .get_link = ethtool_op_get_link,
3187 .get_sg = ethtool_op_get_sg,
3188 .set_sg = ethtool_op_set_sg,
3189 .get_tx_csum = ethtool_op_get_tx_csum,
3190 .set_tx_csum = ethtool_op_set_tx_csum,
3191 .get_tso = ethtool_op_get_tso,
3192 .set_tso = ethtool_op_set_tso,
3193 .get_rx_csum = sky2_get_rx_csum,
3194 .set_rx_csum = sky2_set_rx_csum,
3195 .get_strings = sky2_get_strings,
3196 .get_coalesce = sky2_get_coalesce,
3197 .set_coalesce = sky2_set_coalesce,
3198 .get_ringparam = sky2_get_ringparam,
3199 .set_ringparam = sky2_set_ringparam,
3200 .get_pauseparam = sky2_get_pauseparam,
3201 .set_pauseparam = sky2_set_pauseparam,
3202 .phys_id = sky2_phys_id,
3203 .get_stats_count = sky2_get_stats_count,
3204 .get_ethtool_stats = sky2_get_ethtool_stats,
3205 .get_perm_addr = ethtool_op_get_perm_addr,
3208 /* Initialize network device */
3209 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
3210 unsigned port, int highmem)
3212 struct sky2_port *sky2;
3213 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
3216 printk(KERN_ERR "sky2 etherdev alloc failed");
3220 SET_MODULE_OWNER(dev);
3221 SET_NETDEV_DEV(dev, &hw->pdev->dev);
3222 dev->irq = hw->pdev->irq;
3223 dev->open = sky2_up;
3224 dev->stop = sky2_down;
3225 dev->do_ioctl = sky2_ioctl;
3226 dev->hard_start_xmit = sky2_xmit_frame;
3227 dev->get_stats = sky2_get_stats;
3228 dev->set_multicast_list = sky2_set_multicast;
3229 dev->set_mac_address = sky2_set_mac_address;
3230 dev->change_mtu = sky2_change_mtu;
3231 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
3232 dev->tx_timeout = sky2_tx_timeout;
3233 dev->watchdog_timeo = TX_WATCHDOG;
3235 dev->poll = sky2_poll;
3236 dev->weight = NAPI_WEIGHT;
3237 #ifdef CONFIG_NET_POLL_CONTROLLER
3238 dev->poll_controller = sky2_netpoll;
3241 sky2 = netdev_priv(dev);
3244 sky2->msg_enable = netif_msg_init(debug, default_msg);
3246 /* Auto speed and flow control */
3247 sky2->autoneg = AUTONEG_ENABLE;
3252 sky2->advertising = sky2_supported_modes(hw);
3255 spin_lock_init(&sky2->phy_lock);
3256 sky2->tx_pending = TX_DEF_PENDING;
3257 sky2->rx_pending = RX_DEF_PENDING;
3259 hw->dev[port] = dev;
3263 if (hw->chip_id != CHIP_ID_YUKON_EC_U)
3264 dev->features |= NETIF_F_TSO;
3266 dev->features |= NETIF_F_HIGHDMA;
3267 dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
3269 #ifdef SKY2_VLAN_TAG_USED
3270 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
3271 dev->vlan_rx_register = sky2_vlan_rx_register;
3272 dev->vlan_rx_kill_vid = sky2_vlan_rx_kill_vid;
3275 /* read the mac address */
3276 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
3277 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
3279 /* device is off until link detection */
3280 netif_carrier_off(dev);
3281 netif_stop_queue(dev);
3286 static void __devinit sky2_show_addr(struct net_device *dev)
3288 const struct sky2_port *sky2 = netdev_priv(dev);
3290 if (netif_msg_probe(sky2))
3291 printk(KERN_INFO PFX "%s: addr %02x:%02x:%02x:%02x:%02x:%02x\n",
3293 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
3294 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
3297 /* Handle software interrupt used during MSI test */
3298 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
3300 struct sky2_hw *hw = dev_id;
3301 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
3306 if (status & Y2_IS_IRQ_SW) {
3307 hw->msi_detected = 1;
3308 wake_up(&hw->msi_wait);
3309 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3311 sky2_write32(hw, B0_Y2_SP_ICR, 2);
3316 /* Test interrupt path by forcing a a software IRQ */
3317 static int __devinit sky2_test_msi(struct sky2_hw *hw)
3319 struct pci_dev *pdev = hw->pdev;
3322 init_waitqueue_head (&hw->msi_wait);
3324 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
3326 err = request_irq(pdev->irq, sky2_test_intr, IRQF_SHARED, DRV_NAME, hw);
3328 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3329 pci_name(pdev), pdev->irq);
3333 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
3334 sky2_read8(hw, B0_CTST);
3336 wait_event_timeout(hw->msi_wait, hw->msi_detected, HZ/10);
3338 if (!hw->msi_detected) {
3339 /* MSI test failed, go back to INTx mode */
3340 printk(KERN_INFO PFX "%s: No interrupt generated using MSI, "
3341 "switching to INTx mode.\n",
3345 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3348 sky2_write32(hw, B0_IMSK, 0);
3349 sky2_read32(hw, B0_IMSK);
3351 free_irq(pdev->irq, hw);
3356 static int __devinit sky2_probe(struct pci_dev *pdev,
3357 const struct pci_device_id *ent)
3359 struct net_device *dev, *dev1 = NULL;
3361 int err, pm_cap, using_dac = 0;
3363 err = pci_enable_device(pdev);
3365 printk(KERN_ERR PFX "%s cannot enable PCI device\n",
3370 err = pci_request_regions(pdev, DRV_NAME);
3372 printk(KERN_ERR PFX "%s cannot obtain PCI resources\n",
3377 pci_set_master(pdev);
3379 /* Find power-management capability. */
3380 pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
3382 printk(KERN_ERR PFX "Cannot find PowerManagement capability, "
3385 goto err_out_free_regions;
3388 if (sizeof(dma_addr_t) > sizeof(u32) &&
3389 !(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
3391 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3393 printk(KERN_ERR PFX "%s unable to obtain 64 bit DMA "
3394 "for consistent allocations\n", pci_name(pdev));
3395 goto err_out_free_regions;
3399 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
3401 printk(KERN_ERR PFX "%s no usable DMA configuration\n",
3403 goto err_out_free_regions;
3408 hw = kzalloc(sizeof(*hw), GFP_KERNEL);
3410 printk(KERN_ERR PFX "%s: cannot allocate hardware struct\n",
3412 goto err_out_free_regions;
3417 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
3419 printk(KERN_ERR PFX "%s: cannot map device registers\n",
3421 goto err_out_free_hw;
3423 hw->pm_cap = pm_cap;
3426 /* The sk98lin vendor driver uses hardware byte swapping but
3427 * this driver uses software swapping.
3431 reg = sky2_pci_read32(hw, PCI_DEV_REG2);
3432 reg &= ~PCI_REV_DESC;
3433 sky2_pci_write32(hw, PCI_DEV_REG2, reg);
3437 /* ring for status responses */
3438 hw->st_le = pci_alloc_consistent(hw->pdev, STATUS_LE_BYTES,
3441 goto err_out_iounmap;
3443 err = sky2_reset(hw);
3445 goto err_out_iounmap;
3447 printk(KERN_INFO PFX "v%s addr 0x%llx irq %d Yukon-%s (0x%x) rev %d\n",
3448 DRV_VERSION, (unsigned long long)pci_resource_start(pdev, 0),
3449 pdev->irq, yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
3450 hw->chip_id, hw->chip_rev);
3452 dev = sky2_init_netdev(hw, 0, using_dac);
3454 goto err_out_free_pci;
3456 if (!disable_msi && pci_enable_msi(pdev) == 0) {
3457 err = sky2_test_msi(hw);
3458 if (err == -EOPNOTSUPP)
3459 pci_disable_msi(pdev);
3461 goto err_out_free_netdev;
3464 err = register_netdev(dev);
3466 printk(KERN_ERR PFX "%s: cannot register net device\n",
3468 goto err_out_free_netdev;
3471 err = request_irq(pdev->irq, sky2_intr, IRQF_SHARED, dev->name, hw);
3473 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3474 pci_name(pdev), pdev->irq);
3475 goto err_out_unregister;
3477 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3479 sky2_show_addr(dev);
3481 if (hw->ports > 1 && (dev1 = sky2_init_netdev(hw, 1, using_dac))) {
3482 if (register_netdev(dev1) == 0)
3483 sky2_show_addr(dev1);
3485 /* Failure to register second port need not be fatal */
3486 printk(KERN_WARNING PFX
3487 "register of second port failed\n");
3493 setup_timer(&hw->idle_timer, sky2_idle, (unsigned long) hw);
3494 sky2_idle_start(hw);
3496 pci_set_drvdata(pdev, hw);
3501 pci_disable_msi(pdev);
3502 unregister_netdev(dev);
3503 err_out_free_netdev:
3506 sky2_write8(hw, B0_CTST, CS_RST_SET);
3507 pci_free_consistent(hw->pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3512 err_out_free_regions:
3513 pci_release_regions(pdev);
3514 pci_disable_device(pdev);
3519 static void __devexit sky2_remove(struct pci_dev *pdev)
3521 struct sky2_hw *hw = pci_get_drvdata(pdev);
3522 struct net_device *dev0, *dev1;
3527 del_timer_sync(&hw->idle_timer);
3529 sky2_write32(hw, B0_IMSK, 0);
3530 synchronize_irq(hw->pdev->irq);
3535 unregister_netdev(dev1);
3536 unregister_netdev(dev0);
3538 sky2_set_power_state(hw, PCI_D3hot);
3539 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
3540 sky2_write8(hw, B0_CTST, CS_RST_SET);
3541 sky2_read8(hw, B0_CTST);
3543 free_irq(pdev->irq, hw);
3544 pci_disable_msi(pdev);
3545 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3546 pci_release_regions(pdev);
3547 pci_disable_device(pdev);
3555 pci_set_drvdata(pdev, NULL);
3559 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
3561 struct sky2_hw *hw = pci_get_drvdata(pdev);
3563 pci_power_t pstate = pci_choose_state(pdev, state);
3565 if (!(pstate == PCI_D3hot || pstate == PCI_D3cold))
3568 del_timer_sync(&hw->idle_timer);
3569 netif_poll_disable(hw->dev[0]);
3571 for (i = 0; i < hw->ports; i++) {
3572 struct net_device *dev = hw->dev[i];
3574 if (netif_running(dev)) {
3576 netif_device_detach(dev);
3580 sky2_write32(hw, B0_IMSK, 0);
3581 pci_save_state(pdev);
3582 sky2_set_power_state(hw, pstate);
3586 static int sky2_resume(struct pci_dev *pdev)
3588 struct sky2_hw *hw = pci_get_drvdata(pdev);
3591 pci_restore_state(pdev);
3592 pci_enable_wake(pdev, PCI_D0, 0);
3593 sky2_set_power_state(hw, PCI_D0);
3595 err = sky2_reset(hw);
3599 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3601 for (i = 0; i < hw->ports; i++) {
3602 struct net_device *dev = hw->dev[i];
3603 if (netif_running(dev)) {
3604 netif_device_attach(dev);
3608 printk(KERN_ERR PFX "%s: could not up: %d\n",
3616 netif_poll_enable(hw->dev[0]);
3617 sky2_idle_start(hw);
3623 static struct pci_driver sky2_driver = {
3625 .id_table = sky2_id_table,
3626 .probe = sky2_probe,
3627 .remove = __devexit_p(sky2_remove),
3629 .suspend = sky2_suspend,
3630 .resume = sky2_resume,
3634 static int __init sky2_init_module(void)
3636 return pci_register_driver(&sky2_driver);
3639 static void __exit sky2_cleanup_module(void)
3641 pci_unregister_driver(&sky2_driver);
3644 module_init(sky2_init_module);
3645 module_exit(sky2_cleanup_module);
3647 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
3648 MODULE_AUTHOR("Stephen Hemminger <shemminger@osdl.org>");
3649 MODULE_LICENSE("GPL");
3650 MODULE_VERSION(DRV_VERSION);