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 /* flow control to advertise bits */
288 static const u16 copper_fc_adv[] = {
290 [FC_TX] = PHY_M_AN_ASP,
291 [FC_RX] = PHY_M_AN_PC,
292 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
295 /* flow control to advertise bits when using 1000BaseX */
296 static const u16 fiber_fc_adv[] = {
297 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
298 [FC_TX] = PHY_M_P_ASYM_MD_X,
299 [FC_RX] = PHY_M_P_SYM_MD_X,
300 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
303 /* flow control to GMA disable bits */
304 static const u16 gm_fc_disable[] = {
305 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
306 [FC_TX] = GM_GPCR_FC_RX_DIS,
307 [FC_RX] = GM_GPCR_FC_TX_DIS,
312 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
314 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
315 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
317 if (sky2->autoneg == AUTONEG_ENABLE &&
318 !(hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)) {
319 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
321 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
323 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
325 if (hw->chip_id == CHIP_ID_YUKON_EC)
326 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
328 ectrl |= PHY_M_EC_M_DSC(2) | PHY_M_EC_S_DSC(3);
330 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
333 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
334 if (sky2_is_copper(hw)) {
335 if (hw->chip_id == CHIP_ID_YUKON_FE) {
336 /* enable automatic crossover */
337 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
339 /* disable energy detect */
340 ctrl &= ~PHY_M_PC_EN_DET_MSK;
342 /* enable automatic crossover */
343 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
345 if (sky2->autoneg == AUTONEG_ENABLE &&
346 (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)) {
347 ctrl &= ~PHY_M_PC_DSC_MSK;
348 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
352 /* workaround for deviation #4.88 (CRC errors) */
353 /* disable Automatic Crossover */
355 ctrl &= ~PHY_M_PC_MDIX_MSK;
358 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
360 /* special setup for PHY 88E1112 Fiber */
361 if (hw->chip_id == CHIP_ID_YUKON_XL && !sky2_is_copper(hw)) {
362 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
364 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
365 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
366 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
367 ctrl &= ~PHY_M_MAC_MD_MSK;
368 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
369 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
371 if (hw->pmd_type == 'P') {
372 /* select page 1 to access Fiber registers */
373 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
375 /* for SFP-module set SIGDET polarity to low */
376 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
377 ctrl |= PHY_M_FIB_SIGD_POL;
378 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
381 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
389 if (sky2->autoneg == AUTONEG_ENABLE) {
390 if (sky2_is_copper(hw)) {
391 if (sky2->advertising & ADVERTISED_1000baseT_Full)
392 ct1000 |= PHY_M_1000C_AFD;
393 if (sky2->advertising & ADVERTISED_1000baseT_Half)
394 ct1000 |= PHY_M_1000C_AHD;
395 if (sky2->advertising & ADVERTISED_100baseT_Full)
396 adv |= PHY_M_AN_100_FD;
397 if (sky2->advertising & ADVERTISED_100baseT_Half)
398 adv |= PHY_M_AN_100_HD;
399 if (sky2->advertising & ADVERTISED_10baseT_Full)
400 adv |= PHY_M_AN_10_FD;
401 if (sky2->advertising & ADVERTISED_10baseT_Half)
402 adv |= PHY_M_AN_10_HD;
404 adv |= copper_fc_adv[sky2->flow_mode];
405 } else { /* special defines for FIBER (88E1040S only) */
406 if (sky2->advertising & ADVERTISED_1000baseT_Full)
407 adv |= PHY_M_AN_1000X_AFD;
408 if (sky2->advertising & ADVERTISED_1000baseT_Half)
409 adv |= PHY_M_AN_1000X_AHD;
411 adv |= fiber_fc_adv[sky2->flow_mode];
414 /* Restart Auto-negotiation */
415 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
417 /* forced speed/duplex settings */
418 ct1000 = PHY_M_1000C_MSE;
420 /* Disable auto update for duplex flow control and speed */
421 reg |= GM_GPCR_AU_ALL_DIS;
423 switch (sky2->speed) {
425 ctrl |= PHY_CT_SP1000;
426 reg |= GM_GPCR_SPEED_1000;
429 ctrl |= PHY_CT_SP100;
430 reg |= GM_GPCR_SPEED_100;
434 if (sky2->duplex == DUPLEX_FULL) {
435 reg |= GM_GPCR_DUP_FULL;
436 ctrl |= PHY_CT_DUP_MD;
437 } else if (sky2->speed < SPEED_1000)
438 sky2->flow_mode = FC_NONE;
441 reg |= gm_fc_disable[sky2->flow_mode];
443 /* Forward pause packets to GMAC? */
444 if (sky2->flow_mode & FC_RX)
445 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
447 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
450 gma_write16(hw, port, GM_GP_CTRL, reg);
452 if (hw->chip_id != CHIP_ID_YUKON_FE)
453 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
455 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
456 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
458 /* Setup Phy LED's */
459 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
462 switch (hw->chip_id) {
463 case CHIP_ID_YUKON_FE:
464 /* on 88E3082 these bits are at 11..9 (shifted left) */
465 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
467 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
469 /* delete ACT LED control bits */
470 ctrl &= ~PHY_M_FELP_LED1_MSK;
471 /* change ACT LED control to blink mode */
472 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
473 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
476 case CHIP_ID_YUKON_XL:
477 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
479 /* select page 3 to access LED control register */
480 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
482 /* set LED Function Control register */
483 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
484 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
485 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
486 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
487 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
489 /* set Polarity Control register */
490 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
491 (PHY_M_POLC_LS1_P_MIX(4) |
492 PHY_M_POLC_IS0_P_MIX(4) |
493 PHY_M_POLC_LOS_CTRL(2) |
494 PHY_M_POLC_INIT_CTRL(2) |
495 PHY_M_POLC_STA1_CTRL(2) |
496 PHY_M_POLC_STA0_CTRL(2)));
498 /* restore page register */
499 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
501 case CHIP_ID_YUKON_EC_U:
502 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
504 /* select page 3 to access LED control register */
505 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
507 /* set LED Function Control register */
508 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
509 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
510 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
511 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
512 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
514 /* set Blink Rate in LED Timer Control Register */
515 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
516 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
517 /* restore page register */
518 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
522 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
523 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
524 /* turn off the Rx LED (LED_RX) */
525 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
528 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev == CHIP_REV_YU_EC_A1) {
529 /* apply fixes in PHY AFE */
530 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
531 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
533 /* increase differential signal amplitude in 10BASE-T */
534 gm_phy_write(hw, port, 0x18, 0xaa99);
535 gm_phy_write(hw, port, 0x17, 0x2011);
537 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
538 gm_phy_write(hw, port, 0x18, 0xa204);
539 gm_phy_write(hw, port, 0x17, 0x2002);
541 /* set page register to 0 */
542 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
544 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
546 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
547 /* turn on 100 Mbps LED (LED_LINK100) */
548 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
552 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
556 /* Enable phy interrupt on auto-negotiation complete (or link up) */
557 if (sky2->autoneg == AUTONEG_ENABLE)
558 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
560 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
563 static void sky2_phy_power(struct sky2_hw *hw, unsigned port, int onoff)
566 static const u32 phy_power[]
567 = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
569 /* looks like this XL is back asswards .. */
570 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
573 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
576 /* Turn off phy power saving */
577 reg1 &= ~phy_power[port];
579 reg1 |= phy_power[port];
581 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
582 sky2_pci_read32(hw, PCI_DEV_REG1);
586 /* Force a renegotiation */
587 static void sky2_phy_reinit(struct sky2_port *sky2)
589 spin_lock_bh(&sky2->phy_lock);
590 sky2_phy_init(sky2->hw, sky2->port);
591 spin_unlock_bh(&sky2->phy_lock);
594 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
596 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
599 const u8 *addr = hw->dev[port]->dev_addr;
601 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
602 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR|GPC_ENA_PAUSE);
604 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
606 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
607 /* WA DEV_472 -- looks like crossed wires on port 2 */
608 /* clear GMAC 1 Control reset */
609 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
611 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
612 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
613 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
614 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
615 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
618 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
620 /* Enable Transmit FIFO Underrun */
621 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
623 spin_lock_bh(&sky2->phy_lock);
624 sky2_phy_init(hw, port);
625 spin_unlock_bh(&sky2->phy_lock);
628 reg = gma_read16(hw, port, GM_PHY_ADDR);
629 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
631 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
632 gma_read16(hw, port, i);
633 gma_write16(hw, port, GM_PHY_ADDR, reg);
635 /* transmit control */
636 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
638 /* receive control reg: unicast + multicast + no FCS */
639 gma_write16(hw, port, GM_RX_CTRL,
640 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
642 /* transmit flow control */
643 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
645 /* transmit parameter */
646 gma_write16(hw, port, GM_TX_PARAM,
647 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
648 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
649 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
650 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
652 /* serial mode register */
653 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
654 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
656 if (hw->dev[port]->mtu > ETH_DATA_LEN)
657 reg |= GM_SMOD_JUMBO_ENA;
659 gma_write16(hw, port, GM_SERIAL_MODE, reg);
661 /* virtual address for data */
662 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
664 /* physical address: used for pause frames */
665 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
667 /* ignore counter overflows */
668 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
669 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
670 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
672 /* Configure Rx MAC FIFO */
673 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
674 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
675 GMF_OPER_ON | GMF_RX_F_FL_ON);
677 /* Flush Rx MAC FIFO on any flow control or error */
678 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
680 /* Set threshold to 0xa (64 bytes)
681 * ASF disabled so no need to do WA dev #4.30
683 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF);
685 /* Configure Tx MAC FIFO */
686 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
687 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
689 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
690 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 512/8);
691 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
692 if (hw->dev[port]->mtu > ETH_DATA_LEN) {
693 /* set Tx GMAC FIFO Almost Empty Threshold */
694 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR), 0x180);
695 /* Disable Store & Forward mode for TX */
696 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
702 /* Assign Ram Buffer allocation.
703 * start and end are in units of 4k bytes
704 * ram registers are in units of 64bit words
706 static void sky2_ramset(struct sky2_hw *hw, u16 q, u8 startk, u8 endk)
710 start = startk * 4096/8;
711 end = (endk * 4096/8) - 1;
713 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
714 sky2_write32(hw, RB_ADDR(q, RB_START), start);
715 sky2_write32(hw, RB_ADDR(q, RB_END), end);
716 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
717 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
719 if (q == Q_R1 || q == Q_R2) {
720 u32 space = (endk - startk) * 4096/8;
721 u32 tp = space - space/4;
723 /* On receive queue's set the thresholds
724 * give receiver priority when > 3/4 full
725 * send pause when down to 2K
727 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
728 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
731 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
732 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
734 /* Enable store & forward on Tx queue's because
735 * Tx FIFO is only 1K on Yukon
737 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
740 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
741 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
744 /* Setup Bus Memory Interface */
745 static void sky2_qset(struct sky2_hw *hw, u16 q)
747 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
748 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
749 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
750 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
753 /* Setup prefetch unit registers. This is the interface between
754 * hardware and driver list elements
756 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
759 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
760 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
761 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
762 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
763 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
764 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
766 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
769 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
771 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
773 sky2->tx_prod = RING_NEXT(sky2->tx_prod, TX_RING_SIZE);
778 static inline struct tx_ring_info *tx_le_re(struct sky2_port *sky2,
779 struct sky2_tx_le *le)
781 return sky2->tx_ring + (le - sky2->tx_le);
784 /* Update chip's next pointer */
785 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
787 q = Y2_QADDR(q, PREF_UNIT_PUT_IDX);
789 sky2_write16(hw, q, idx);
794 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
796 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
797 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
802 /* Return high part of DMA address (could be 32 or 64 bit) */
803 static inline u32 high32(dma_addr_t a)
805 return sizeof(a) > sizeof(u32) ? (a >> 16) >> 16 : 0;
808 /* Build description to hardware for one receive segment */
809 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
810 dma_addr_t map, unsigned len)
812 struct sky2_rx_le *le;
813 u32 hi = high32(map);
815 if (sky2->rx_addr64 != hi) {
816 le = sky2_next_rx(sky2);
817 le->addr = cpu_to_le32(hi);
818 le->opcode = OP_ADDR64 | HW_OWNER;
819 sky2->rx_addr64 = high32(map + len);
822 le = sky2_next_rx(sky2);
823 le->addr = cpu_to_le32((u32) map);
824 le->length = cpu_to_le16(len);
825 le->opcode = op | HW_OWNER;
828 /* Build description to hardware for one possibly fragmented skb */
829 static void sky2_rx_submit(struct sky2_port *sky2,
830 const struct rx_ring_info *re)
834 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
836 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
837 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
841 static void sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
844 struct sk_buff *skb = re->skb;
847 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
848 pci_unmap_len_set(re, data_size, size);
850 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
851 re->frag_addr[i] = pci_map_page(pdev,
852 skb_shinfo(skb)->frags[i].page,
853 skb_shinfo(skb)->frags[i].page_offset,
854 skb_shinfo(skb)->frags[i].size,
858 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
860 struct sk_buff *skb = re->skb;
863 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
866 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
867 pci_unmap_page(pdev, re->frag_addr[i],
868 skb_shinfo(skb)->frags[i].size,
872 /* Tell chip where to start receive checksum.
873 * Actually has two checksums, but set both same to avoid possible byte
876 static void rx_set_checksum(struct sky2_port *sky2)
878 struct sky2_rx_le *le;
880 le = sky2_next_rx(sky2);
881 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
883 le->opcode = OP_TCPSTART | HW_OWNER;
885 sky2_write32(sky2->hw,
886 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
887 sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
892 * The RX Stop command will not work for Yukon-2 if the BMU does not
893 * reach the end of packet and since we can't make sure that we have
894 * incoming data, we must reset the BMU while it is not doing a DMA
895 * transfer. Since it is possible that the RX path is still active,
896 * the RX RAM buffer will be stopped first, so any possible incoming
897 * data will not trigger a DMA. After the RAM buffer is stopped, the
898 * BMU is polled until any DMA in progress is ended and only then it
901 static void sky2_rx_stop(struct sky2_port *sky2)
903 struct sky2_hw *hw = sky2->hw;
904 unsigned rxq = rxqaddr[sky2->port];
907 /* disable the RAM Buffer receive queue */
908 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
910 for (i = 0; i < 0xffff; i++)
911 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
912 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
915 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
918 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
920 /* reset the Rx prefetch unit */
921 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
924 /* Clean out receive buffer area, assumes receiver hardware stopped */
925 static void sky2_rx_clean(struct sky2_port *sky2)
929 memset(sky2->rx_le, 0, RX_LE_BYTES);
930 for (i = 0; i < sky2->rx_pending; i++) {
931 struct rx_ring_info *re = sky2->rx_ring + i;
934 sky2_rx_unmap_skb(sky2->hw->pdev, re);
941 /* Basic MII support */
942 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
944 struct mii_ioctl_data *data = if_mii(ifr);
945 struct sky2_port *sky2 = netdev_priv(dev);
946 struct sky2_hw *hw = sky2->hw;
947 int err = -EOPNOTSUPP;
949 if (!netif_running(dev))
950 return -ENODEV; /* Phy still in reset */
954 data->phy_id = PHY_ADDR_MARV;
960 spin_lock_bh(&sky2->phy_lock);
961 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
962 spin_unlock_bh(&sky2->phy_lock);
969 if (!capable(CAP_NET_ADMIN))
972 spin_lock_bh(&sky2->phy_lock);
973 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
975 spin_unlock_bh(&sky2->phy_lock);
981 #ifdef SKY2_VLAN_TAG_USED
982 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
984 struct sky2_port *sky2 = netdev_priv(dev);
985 struct sky2_hw *hw = sky2->hw;
986 u16 port = sky2->port;
988 netif_tx_lock_bh(dev);
990 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_ON);
991 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_ON);
994 netif_tx_unlock_bh(dev);
997 static void sky2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
999 struct sky2_port *sky2 = netdev_priv(dev);
1000 struct sky2_hw *hw = sky2->hw;
1001 u16 port = sky2->port;
1003 netif_tx_lock_bh(dev);
1005 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_OFF);
1006 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_OFF);
1008 sky2->vlgrp->vlan_devices[vid] = NULL;
1010 netif_tx_unlock_bh(dev);
1015 * Allocate an skb for receiving. If the MTU is large enough
1016 * make the skb non-linear with a fragment list of pages.
1018 * It appears the hardware has a bug in the FIFO logic that
1019 * cause it to hang if the FIFO gets overrun and the receive buffer
1020 * is not 64 byte aligned. The buffer returned from netdev_alloc_skb is
1021 * aligned except if slab debugging is enabled.
1023 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2)
1025 struct sk_buff *skb;
1029 skb = netdev_alloc_skb(sky2->netdev, sky2->rx_data_size + RX_SKB_ALIGN);
1033 p = (unsigned long) skb->data;
1034 skb_reserve(skb, ALIGN(p, RX_SKB_ALIGN) - p);
1036 for (i = 0; i < sky2->rx_nfrags; i++) {
1037 struct page *page = alloc_page(GFP_ATOMIC);
1041 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1052 * Allocate and setup receiver buffer pool.
1053 * Normal case this ends up creating one list element for skb
1054 * in the receive ring. Worst case if using large MTU and each
1055 * allocation falls on a different 64 bit region, that results
1056 * in 6 list elements per ring entry.
1057 * One element is used for checksum enable/disable, and one
1058 * extra to avoid wrap.
1060 static int sky2_rx_start(struct sky2_port *sky2)
1062 struct sky2_hw *hw = sky2->hw;
1063 struct rx_ring_info *re;
1064 unsigned rxq = rxqaddr[sky2->port];
1065 unsigned i, size, space, thresh;
1067 sky2->rx_put = sky2->rx_next = 0;
1070 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev >= 2) {
1071 /* MAC Rx RAM Read is controlled by hardware */
1072 sky2_write32(hw, Q_ADDR(rxq, Q_F), F_M_RX_RAM_DIS);
1075 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1077 rx_set_checksum(sky2);
1079 /* Space needed for frame data + headers rounded up */
1080 size = ALIGN(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8)
1083 /* Stopping point for hardware truncation */
1084 thresh = (size - 8) / sizeof(u32);
1086 /* Account for overhead of skb - to avoid order > 0 allocation */
1087 space = SKB_DATA_ALIGN(size) + NET_SKB_PAD
1088 + sizeof(struct skb_shared_info);
1090 sky2->rx_nfrags = space >> PAGE_SHIFT;
1091 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1093 if (sky2->rx_nfrags != 0) {
1094 /* Compute residue after pages */
1095 space = sky2->rx_nfrags << PAGE_SHIFT;
1102 /* Optimize to handle small packets and headers */
1103 if (size < copybreak)
1105 if (size < ETH_HLEN)
1108 sky2->rx_data_size = size;
1111 for (i = 0; i < sky2->rx_pending; i++) {
1112 re = sky2->rx_ring + i;
1114 re->skb = sky2_rx_alloc(sky2);
1118 sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size);
1119 sky2_rx_submit(sky2, re);
1123 * The receiver hangs if it receives frames larger than the
1124 * packet buffer. As a workaround, truncate oversize frames, but
1125 * the register is limited to 9 bits, so if you do frames > 2052
1126 * you better get the MTU right!
1129 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1131 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1132 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1135 /* Tell chip about available buffers */
1136 sky2_write16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX), sky2->rx_put);
1139 sky2_rx_clean(sky2);
1143 /* Bring up network interface. */
1144 static int sky2_up(struct net_device *dev)
1146 struct sky2_port *sky2 = netdev_priv(dev);
1147 struct sky2_hw *hw = sky2->hw;
1148 unsigned port = sky2->port;
1149 u32 ramsize, rxspace, imask;
1150 int cap, err = -ENOMEM;
1151 struct net_device *otherdev = hw->dev[sky2->port^1];
1154 * On dual port PCI-X card, there is an problem where status
1155 * can be received out of order due to split transactions
1157 if (otherdev && netif_running(otherdev) &&
1158 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1159 struct sky2_port *osky2 = netdev_priv(otherdev);
1162 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1163 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1164 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1170 if (netif_msg_ifup(sky2))
1171 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
1173 /* must be power of 2 */
1174 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1176 sizeof(struct sky2_tx_le),
1181 sky2->tx_ring = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info),
1185 sky2->tx_prod = sky2->tx_cons = 0;
1187 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1191 memset(sky2->rx_le, 0, RX_LE_BYTES);
1193 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1198 sky2_phy_power(hw, port, 1);
1200 sky2_mac_init(hw, port);
1202 /* Determine available ram buffer space (in 4K blocks).
1203 * Note: not sure about the FE setting below yet
1205 if (hw->chip_id == CHIP_ID_YUKON_FE)
1208 ramsize = sky2_read8(hw, B2_E_0);
1210 /* Give transmitter one third (rounded up) */
1211 rxspace = ramsize - (ramsize + 2) / 3;
1213 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1214 sky2_ramset(hw, txqaddr[port], rxspace, ramsize);
1216 /* Make sure SyncQ is disabled */
1217 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1220 sky2_qset(hw, txqaddr[port]);
1222 /* Set almost empty threshold */
1223 if (hw->chip_id == CHIP_ID_YUKON_EC_U
1224 && hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1225 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), 0x1a0);
1227 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1230 err = sky2_rx_start(sky2);
1234 /* Enable interrupts from phy/mac for port */
1235 imask = sky2_read32(hw, B0_IMSK);
1236 imask |= portirq_msk[port];
1237 sky2_write32(hw, B0_IMSK, imask);
1243 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1244 sky2->rx_le, sky2->rx_le_map);
1248 pci_free_consistent(hw->pdev,
1249 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1250 sky2->tx_le, sky2->tx_le_map);
1253 kfree(sky2->tx_ring);
1254 kfree(sky2->rx_ring);
1256 sky2->tx_ring = NULL;
1257 sky2->rx_ring = NULL;
1261 /* Modular subtraction in ring */
1262 static inline int tx_dist(unsigned tail, unsigned head)
1264 return (head - tail) & (TX_RING_SIZE - 1);
1267 /* Number of list elements available for next tx */
1268 static inline int tx_avail(const struct sky2_port *sky2)
1270 return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
1273 /* Estimate of number of transmit list elements required */
1274 static unsigned tx_le_req(const struct sk_buff *skb)
1278 count = sizeof(dma_addr_t) / sizeof(u32);
1279 count += skb_shinfo(skb)->nr_frags * count;
1281 if (skb_is_gso(skb))
1284 if (skb->ip_summed == CHECKSUM_PARTIAL)
1291 * Put one packet in ring for transmit.
1292 * A single packet can generate multiple list elements, and
1293 * the number of ring elements will probably be less than the number
1294 * of list elements used.
1296 static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1298 struct sky2_port *sky2 = netdev_priv(dev);
1299 struct sky2_hw *hw = sky2->hw;
1300 struct sky2_tx_le *le = NULL;
1301 struct tx_ring_info *re;
1308 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1309 return NETDEV_TX_BUSY;
1311 if (unlikely(netif_msg_tx_queued(sky2)))
1312 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1313 dev->name, sky2->tx_prod, skb->len);
1315 len = skb_headlen(skb);
1316 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1317 addr64 = high32(mapping);
1319 /* Send high bits if changed or crosses boundary */
1320 if (addr64 != sky2->tx_addr64 || high32(mapping + len) != sky2->tx_addr64) {
1321 le = get_tx_le(sky2);
1322 le->addr = cpu_to_le32(addr64);
1323 le->opcode = OP_ADDR64 | HW_OWNER;
1324 sky2->tx_addr64 = high32(mapping + len);
1327 /* Check for TCP Segmentation Offload */
1328 mss = skb_shinfo(skb)->gso_size;
1330 mss += ((skb->h.th->doff - 5) * 4); /* TCP options */
1331 mss += (skb->nh.iph->ihl * 4) + sizeof(struct tcphdr);
1334 if (mss != sky2->tx_last_mss) {
1335 le = get_tx_le(sky2);
1336 le->addr = cpu_to_le32(mss);
1337 le->opcode = OP_LRGLEN | HW_OWNER;
1338 sky2->tx_last_mss = mss;
1343 #ifdef SKY2_VLAN_TAG_USED
1344 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1345 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1347 le = get_tx_le(sky2);
1349 le->opcode = OP_VLAN|HW_OWNER;
1351 le->opcode |= OP_VLAN;
1352 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1357 /* Handle TCP checksum offload */
1358 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1359 unsigned offset = skb->h.raw - skb->data;
1362 tcpsum = offset << 16; /* sum start */
1363 tcpsum |= offset + skb->csum; /* sum write */
1365 ctrl = CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1366 if (skb->nh.iph->protocol == IPPROTO_UDP)
1369 if (tcpsum != sky2->tx_tcpsum) {
1370 sky2->tx_tcpsum = tcpsum;
1372 le = get_tx_le(sky2);
1373 le->addr = cpu_to_le32(tcpsum);
1374 le->length = 0; /* initial checksum value */
1375 le->ctrl = 1; /* one packet */
1376 le->opcode = OP_TCPLISW | HW_OWNER;
1380 le = get_tx_le(sky2);
1381 le->addr = cpu_to_le32((u32) mapping);
1382 le->length = cpu_to_le16(len);
1384 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1386 re = tx_le_re(sky2, le);
1388 pci_unmap_addr_set(re, mapaddr, mapping);
1389 pci_unmap_len_set(re, maplen, len);
1391 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1392 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1394 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1395 frag->size, PCI_DMA_TODEVICE);
1396 addr64 = high32(mapping);
1397 if (addr64 != sky2->tx_addr64) {
1398 le = get_tx_le(sky2);
1399 le->addr = cpu_to_le32(addr64);
1401 le->opcode = OP_ADDR64 | HW_OWNER;
1402 sky2->tx_addr64 = addr64;
1405 le = get_tx_le(sky2);
1406 le->addr = cpu_to_le32((u32) mapping);
1407 le->length = cpu_to_le16(frag->size);
1409 le->opcode = OP_BUFFER | HW_OWNER;
1411 re = tx_le_re(sky2, le);
1413 pci_unmap_addr_set(re, mapaddr, mapping);
1414 pci_unmap_len_set(re, maplen, frag->size);
1419 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1420 netif_stop_queue(dev);
1422 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1424 dev->trans_start = jiffies;
1425 return NETDEV_TX_OK;
1429 * Free ring elements from starting at tx_cons until "done"
1431 * NB: the hardware will tell us about partial completion of multi-part
1432 * buffers so make sure not to free skb to early.
1434 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1436 struct net_device *dev = sky2->netdev;
1437 struct pci_dev *pdev = sky2->hw->pdev;
1440 BUG_ON(done >= TX_RING_SIZE);
1442 for (idx = sky2->tx_cons; idx != done;
1443 idx = RING_NEXT(idx, TX_RING_SIZE)) {
1444 struct sky2_tx_le *le = sky2->tx_le + idx;
1445 struct tx_ring_info *re = sky2->tx_ring + idx;
1447 switch(le->opcode & ~HW_OWNER) {
1450 pci_unmap_single(pdev,
1451 pci_unmap_addr(re, mapaddr),
1452 pci_unmap_len(re, maplen),
1456 pci_unmap_page(pdev, pci_unmap_addr(re, mapaddr),
1457 pci_unmap_len(re, maplen),
1462 if (le->ctrl & EOP) {
1463 if (unlikely(netif_msg_tx_done(sky2)))
1464 printk(KERN_DEBUG "%s: tx done %u\n",
1466 dev_kfree_skb(re->skb);
1469 le->opcode = 0; /* paranoia */
1472 sky2->tx_cons = idx;
1473 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
1474 netif_wake_queue(dev);
1477 /* Cleanup all untransmitted buffers, assume transmitter not running */
1478 static void sky2_tx_clean(struct net_device *dev)
1480 struct sky2_port *sky2 = netdev_priv(dev);
1482 netif_tx_lock_bh(dev);
1483 sky2_tx_complete(sky2, sky2->tx_prod);
1484 netif_tx_unlock_bh(dev);
1487 /* Network shutdown */
1488 static int sky2_down(struct net_device *dev)
1490 struct sky2_port *sky2 = netdev_priv(dev);
1491 struct sky2_hw *hw = sky2->hw;
1492 unsigned port = sky2->port;
1496 /* Never really got started! */
1500 if (netif_msg_ifdown(sky2))
1501 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1503 /* Stop more packets from being queued */
1504 netif_stop_queue(dev);
1506 /* Disable port IRQ */
1507 imask = sky2_read32(hw, B0_IMSK);
1508 imask &= ~portirq_msk[port];
1509 sky2_write32(hw, B0_IMSK, imask);
1511 sky2_gmac_reset(hw, port);
1513 /* Stop transmitter */
1514 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1515 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1517 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1518 RB_RST_SET | RB_DIS_OP_MD);
1520 /* WA for dev. #4.209 */
1521 if (hw->chip_id == CHIP_ID_YUKON_EC_U
1522 && hw->chip_rev == CHIP_REV_YU_EC_U_A1)
1523 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1524 sky2->speed != SPEED_1000 ?
1525 TX_STFW_ENA : TX_STFW_DIS);
1527 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1528 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1529 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1531 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1533 /* Workaround shared GMAC reset */
1534 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1535 && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1536 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1538 /* Disable Force Sync bit and Enable Alloc bit */
1539 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1540 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1542 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1543 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1544 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1546 /* Reset the PCI FIFO of the async Tx queue */
1547 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1548 BMU_RST_SET | BMU_FIFO_RST);
1550 /* Reset the Tx prefetch units */
1551 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1554 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1558 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1559 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1561 sky2_phy_power(hw, port, 0);
1563 /* turn off LED's */
1564 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1566 synchronize_irq(hw->pdev->irq);
1569 sky2_rx_clean(sky2);
1571 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1572 sky2->rx_le, sky2->rx_le_map);
1573 kfree(sky2->rx_ring);
1575 pci_free_consistent(hw->pdev,
1576 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1577 sky2->tx_le, sky2->tx_le_map);
1578 kfree(sky2->tx_ring);
1583 sky2->rx_ring = NULL;
1584 sky2->tx_ring = NULL;
1589 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1591 if (!sky2_is_copper(hw))
1594 if (hw->chip_id == CHIP_ID_YUKON_FE)
1595 return (aux & PHY_M_PS_SPEED_100) ? SPEED_100 : SPEED_10;
1597 switch (aux & PHY_M_PS_SPEED_MSK) {
1598 case PHY_M_PS_SPEED_1000:
1600 case PHY_M_PS_SPEED_100:
1607 static void sky2_link_up(struct sky2_port *sky2)
1609 struct sky2_hw *hw = sky2->hw;
1610 unsigned port = sky2->port;
1612 static const char *fc_name[] = {
1620 reg = gma_read16(hw, port, GM_GP_CTRL);
1621 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1622 gma_write16(hw, port, GM_GP_CTRL, reg);
1624 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1626 netif_carrier_on(sky2->netdev);
1627 netif_wake_queue(sky2->netdev);
1629 /* Turn on link LED */
1630 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1631 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1633 if (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U) {
1634 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
1635 u16 led = PHY_M_LEDC_LOS_CTRL(1); /* link active */
1637 switch(sky2->speed) {
1639 led |= PHY_M_LEDC_INIT_CTRL(7);
1643 led |= PHY_M_LEDC_STA1_CTRL(7);
1647 led |= PHY_M_LEDC_STA0_CTRL(7);
1651 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
1652 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, led);
1653 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
1656 if (netif_msg_link(sky2))
1657 printk(KERN_INFO PFX
1658 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1659 sky2->netdev->name, sky2->speed,
1660 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1661 fc_name[sky2->flow_status]);
1664 static void sky2_link_down(struct sky2_port *sky2)
1666 struct sky2_hw *hw = sky2->hw;
1667 unsigned port = sky2->port;
1670 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1672 reg = gma_read16(hw, port, GM_GP_CTRL);
1673 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1674 gma_write16(hw, port, GM_GP_CTRL, reg);
1676 if (sky2->flow_status == FC_RX) {
1677 /* restore Asymmetric Pause bit */
1678 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV,
1679 gm_phy_read(hw, port, PHY_MARV_AUNE_ADV)
1683 netif_carrier_off(sky2->netdev);
1684 netif_stop_queue(sky2->netdev);
1686 /* Turn on link LED */
1687 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1689 if (netif_msg_link(sky2))
1690 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
1692 sky2_phy_init(hw, port);
1695 static enum flow_control sky2_flow(int rx, int tx)
1698 return tx ? FC_BOTH : FC_RX;
1700 return tx ? FC_TX : FC_NONE;
1703 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
1705 struct sky2_hw *hw = sky2->hw;
1706 unsigned port = sky2->port;
1709 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
1711 if (lpa & PHY_M_AN_RF) {
1712 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
1716 if (!(aux & PHY_M_PS_SPDUP_RES)) {
1717 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
1718 sky2->netdev->name);
1722 sky2->speed = sky2_phy_speed(hw, aux);
1723 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1725 /* Pause bits are offset (9..8) */
1726 if (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)
1729 sky2->flow_status = sky2_flow(aux & PHY_M_PS_RX_P_EN,
1730 aux & PHY_M_PS_TX_P_EN);
1732 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000
1733 && hw->chip_id != CHIP_ID_YUKON_EC_U)
1734 sky2->flow_status = FC_NONE;
1736 if (aux & PHY_M_PS_RX_P_EN)
1737 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
1739 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1744 /* Interrupt from PHY */
1745 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
1747 struct net_device *dev = hw->dev[port];
1748 struct sky2_port *sky2 = netdev_priv(dev);
1749 u16 istatus, phystat;
1751 if (!netif_running(dev))
1754 spin_lock(&sky2->phy_lock);
1755 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
1756 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
1758 if (netif_msg_intr(sky2))
1759 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
1760 sky2->netdev->name, istatus, phystat);
1762 if (sky2->autoneg == AUTONEG_ENABLE && (istatus & PHY_M_IS_AN_COMPL)) {
1763 if (sky2_autoneg_done(sky2, phystat) == 0)
1768 if (istatus & PHY_M_IS_LSP_CHANGE)
1769 sky2->speed = sky2_phy_speed(hw, phystat);
1771 if (istatus & PHY_M_IS_DUP_CHANGE)
1773 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1775 if (istatus & PHY_M_IS_LST_CHANGE) {
1776 if (phystat & PHY_M_PS_LINK_UP)
1779 sky2_link_down(sky2);
1782 spin_unlock(&sky2->phy_lock);
1786 /* Transmit timeout is only called if we are running, carries is up
1787 * and tx queue is full (stopped).
1789 static void sky2_tx_timeout(struct net_device *dev)
1791 struct sky2_port *sky2 = netdev_priv(dev);
1792 struct sky2_hw *hw = sky2->hw;
1793 unsigned txq = txqaddr[sky2->port];
1796 if (netif_msg_timer(sky2))
1797 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
1799 report = sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX);
1800 done = sky2_read16(hw, Q_ADDR(txq, Q_DONE));
1802 printk(KERN_DEBUG PFX "%s: transmit ring %u .. %u report=%u done=%u\n",
1804 sky2->tx_cons, sky2->tx_prod, report, done);
1806 if (report != done) {
1807 printk(KERN_INFO PFX "status burst pending (irq moderation?)\n");
1809 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
1810 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
1811 } else if (report != sky2->tx_cons) {
1812 printk(KERN_INFO PFX "status report lost?\n");
1814 netif_tx_lock_bh(dev);
1815 sky2_tx_complete(sky2, report);
1816 netif_tx_unlock_bh(dev);
1818 printk(KERN_INFO PFX "hardware hung? flushing\n");
1820 sky2_write32(hw, Q_ADDR(txq, Q_CSR), BMU_STOP);
1821 sky2_write32(hw, Y2_QADDR(txq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1826 sky2_prefetch_init(hw, txq, sky2->tx_le_map, TX_RING_SIZE - 1);
1830 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
1832 struct sky2_port *sky2 = netdev_priv(dev);
1833 struct sky2_hw *hw = sky2->hw;
1838 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
1841 if (hw->chip_id == CHIP_ID_YUKON_EC_U && new_mtu > ETH_DATA_LEN)
1844 if (!netif_running(dev)) {
1849 imask = sky2_read32(hw, B0_IMSK);
1850 sky2_write32(hw, B0_IMSK, 0);
1852 dev->trans_start = jiffies; /* prevent tx timeout */
1853 netif_stop_queue(dev);
1854 netif_poll_disable(hw->dev[0]);
1856 synchronize_irq(hw->pdev->irq);
1858 ctl = gma_read16(hw, sky2->port, GM_GP_CTRL);
1859 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
1861 sky2_rx_clean(sky2);
1865 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
1866 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
1868 if (dev->mtu > ETH_DATA_LEN)
1869 mode |= GM_SMOD_JUMBO_ENA;
1871 gma_write16(hw, sky2->port, GM_SERIAL_MODE, mode);
1873 sky2_write8(hw, RB_ADDR(rxqaddr[sky2->port], RB_CTRL), RB_ENA_OP_MD);
1875 err = sky2_rx_start(sky2);
1876 sky2_write32(hw, B0_IMSK, imask);
1881 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl);
1883 netif_poll_enable(hw->dev[0]);
1884 netif_wake_queue(dev);
1890 /* For small just reuse existing skb for next receive */
1891 static struct sk_buff *receive_copy(struct sky2_port *sky2,
1892 const struct rx_ring_info *re,
1895 struct sk_buff *skb;
1897 skb = netdev_alloc_skb(sky2->netdev, length + 2);
1899 skb_reserve(skb, 2);
1900 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
1901 length, PCI_DMA_FROMDEVICE);
1902 memcpy(skb->data, re->skb->data, length);
1903 skb->ip_summed = re->skb->ip_summed;
1904 skb->csum = re->skb->csum;
1905 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
1906 length, PCI_DMA_FROMDEVICE);
1907 re->skb->ip_summed = CHECKSUM_NONE;
1908 skb_put(skb, length);
1913 /* Adjust length of skb with fragments to match received data */
1914 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
1915 unsigned int length)
1920 /* put header into skb */
1921 size = min(length, hdr_space);
1926 num_frags = skb_shinfo(skb)->nr_frags;
1927 for (i = 0; i < num_frags; i++) {
1928 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1931 /* don't need this page */
1932 __free_page(frag->page);
1933 --skb_shinfo(skb)->nr_frags;
1935 size = min(length, (unsigned) PAGE_SIZE);
1938 skb->data_len += size;
1939 skb->truesize += size;
1946 /* Normal packet - take skb from ring element and put in a new one */
1947 static struct sk_buff *receive_new(struct sky2_port *sky2,
1948 struct rx_ring_info *re,
1949 unsigned int length)
1951 struct sk_buff *skb, *nskb;
1952 unsigned hdr_space = sky2->rx_data_size;
1954 pr_debug(PFX "receive new length=%d\n", length);
1956 /* Don't be tricky about reusing pages (yet) */
1957 nskb = sky2_rx_alloc(sky2);
1958 if (unlikely(!nskb))
1962 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1964 prefetch(skb->data);
1966 sky2_rx_map_skb(sky2->hw->pdev, re, hdr_space);
1968 if (skb_shinfo(skb)->nr_frags)
1969 skb_put_frags(skb, hdr_space, length);
1971 skb_put(skb, length);
1976 * Receive one packet.
1977 * For larger packets, get new buffer.
1979 static struct sk_buff *sky2_receive(struct net_device *dev,
1980 u16 length, u32 status)
1982 struct sky2_port *sky2 = netdev_priv(dev);
1983 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
1984 struct sk_buff *skb = NULL;
1986 if (unlikely(netif_msg_rx_status(sky2)))
1987 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
1988 dev->name, sky2->rx_next, status, length);
1990 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
1991 prefetch(sky2->rx_ring + sky2->rx_next);
1993 if (status & GMR_FS_ANY_ERR)
1996 if (!(status & GMR_FS_RX_OK))
1999 if (length > dev->mtu + ETH_HLEN)
2002 if (length < copybreak)
2003 skb = receive_copy(sky2, re, length);
2005 skb = receive_new(sky2, re, length);
2007 sky2_rx_submit(sky2, re);
2012 ++sky2->net_stats.rx_over_errors;
2016 ++sky2->net_stats.rx_errors;
2018 if (netif_msg_rx_err(sky2) && net_ratelimit())
2019 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
2020 dev->name, status, length);
2022 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
2023 sky2->net_stats.rx_length_errors++;
2024 if (status & GMR_FS_FRAGMENT)
2025 sky2->net_stats.rx_frame_errors++;
2026 if (status & GMR_FS_CRC_ERR)
2027 sky2->net_stats.rx_crc_errors++;
2028 if (status & GMR_FS_RX_FF_OV)
2029 sky2->net_stats.rx_fifo_errors++;
2034 /* Transmit complete */
2035 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2037 struct sky2_port *sky2 = netdev_priv(dev);
2039 if (netif_running(dev)) {
2041 sky2_tx_complete(sky2, last);
2042 netif_tx_unlock(dev);
2046 /* Process status response ring */
2047 static int sky2_status_intr(struct sky2_hw *hw, int to_do)
2049 struct sky2_port *sky2;
2051 unsigned buf_write[2] = { 0, 0 };
2052 u16 hwidx = sky2_read16(hw, STAT_PUT_IDX);
2056 while (hw->st_idx != hwidx) {
2057 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2058 struct net_device *dev;
2059 struct sk_buff *skb;
2063 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
2065 BUG_ON(le->link >= 2);
2066 dev = hw->dev[le->link];
2068 sky2 = netdev_priv(dev);
2069 length = le16_to_cpu(le->length);
2070 status = le32_to_cpu(le->status);
2072 switch (le->opcode & ~HW_OWNER) {
2074 skb = sky2_receive(dev, length, status);
2078 skb->protocol = eth_type_trans(skb, dev);
2079 dev->last_rx = jiffies;
2081 #ifdef SKY2_VLAN_TAG_USED
2082 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
2083 vlan_hwaccel_receive_skb(skb,
2085 be16_to_cpu(sky2->rx_tag));
2088 netif_receive_skb(skb);
2090 /* Update receiver after 16 frames */
2091 if (++buf_write[le->link] == RX_BUF_WRITE) {
2092 sky2_put_idx(hw, rxqaddr[le->link],
2094 buf_write[le->link] = 0;
2097 /* Stop after net poll weight */
2098 if (++work_done >= to_do)
2102 #ifdef SKY2_VLAN_TAG_USED
2104 sky2->rx_tag = length;
2108 sky2->rx_tag = length;
2112 skb = sky2->rx_ring[sky2->rx_next].skb;
2113 skb->ip_summed = CHECKSUM_COMPLETE;
2114 skb->csum = status & 0xffff;
2118 /* TX index reports status for both ports */
2119 BUILD_BUG_ON(TX_RING_SIZE > 0x1000);
2120 sky2_tx_done(hw->dev[0], status & 0xfff);
2122 sky2_tx_done(hw->dev[1],
2123 ((status >> 24) & 0xff)
2124 | (u16)(length & 0xf) << 8);
2128 if (net_ratelimit())
2129 printk(KERN_WARNING PFX
2130 "unknown status opcode 0x%x\n", le->opcode);
2135 /* Fully processed status ring so clear irq */
2136 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2140 sky2 = netdev_priv(hw->dev[0]);
2141 sky2_put_idx(hw, Q_R1, sky2->rx_put);
2145 sky2 = netdev_priv(hw->dev[1]);
2146 sky2_put_idx(hw, Q_R2, sky2->rx_put);
2152 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2154 struct net_device *dev = hw->dev[port];
2156 if (net_ratelimit())
2157 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
2160 if (status & Y2_IS_PAR_RD1) {
2161 if (net_ratelimit())
2162 printk(KERN_ERR PFX "%s: ram data read parity error\n",
2165 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2168 if (status & Y2_IS_PAR_WR1) {
2169 if (net_ratelimit())
2170 printk(KERN_ERR PFX "%s: ram data write parity error\n",
2173 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2176 if (status & Y2_IS_PAR_MAC1) {
2177 if (net_ratelimit())
2178 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
2179 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2182 if (status & Y2_IS_PAR_RX1) {
2183 if (net_ratelimit())
2184 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
2185 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2188 if (status & Y2_IS_TCP_TXA1) {
2189 if (net_ratelimit())
2190 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
2192 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2196 static void sky2_hw_intr(struct sky2_hw *hw)
2198 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2200 if (status & Y2_IS_TIST_OV)
2201 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2203 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2206 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2207 if (net_ratelimit())
2208 printk(KERN_ERR PFX "%s: pci hw error (0x%x)\n",
2209 pci_name(hw->pdev), pci_err);
2211 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2212 sky2_pci_write16(hw, PCI_STATUS,
2213 pci_err | PCI_STATUS_ERROR_BITS);
2214 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2217 if (status & Y2_IS_PCI_EXP) {
2218 /* PCI-Express uncorrectable Error occurred */
2221 pex_err = sky2_pci_read32(hw, PEX_UNC_ERR_STAT);
2223 if (net_ratelimit())
2224 printk(KERN_ERR PFX "%s: pci express error (0x%x)\n",
2225 pci_name(hw->pdev), pex_err);
2227 /* clear the interrupt */
2228 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2229 sky2_pci_write32(hw, PEX_UNC_ERR_STAT,
2231 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2233 if (pex_err & PEX_FATAL_ERRORS) {
2234 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2235 hwmsk &= ~Y2_IS_PCI_EXP;
2236 sky2_write32(hw, B0_HWE_IMSK, hwmsk);
2240 if (status & Y2_HWE_L1_MASK)
2241 sky2_hw_error(hw, 0, status);
2243 if (status & Y2_HWE_L1_MASK)
2244 sky2_hw_error(hw, 1, status);
2247 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2249 struct net_device *dev = hw->dev[port];
2250 struct sky2_port *sky2 = netdev_priv(dev);
2251 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2253 if (netif_msg_intr(sky2))
2254 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2257 if (status & GM_IS_RX_FF_OR) {
2258 ++sky2->net_stats.rx_fifo_errors;
2259 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2262 if (status & GM_IS_TX_FF_UR) {
2263 ++sky2->net_stats.tx_fifo_errors;
2264 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2268 /* This should never happen it is a fatal situation */
2269 static void sky2_descriptor_error(struct sky2_hw *hw, unsigned port,
2270 const char *rxtx, u32 mask)
2272 struct net_device *dev = hw->dev[port];
2273 struct sky2_port *sky2 = netdev_priv(dev);
2276 printk(KERN_ERR PFX "%s: %s descriptor error (hardware problem)\n",
2277 dev ? dev->name : "<not registered>", rxtx);
2279 imask = sky2_read32(hw, B0_IMSK);
2281 sky2_write32(hw, B0_IMSK, imask);
2284 spin_lock(&sky2->phy_lock);
2285 sky2_link_down(sky2);
2286 spin_unlock(&sky2->phy_lock);
2290 /* If idle then force a fake soft NAPI poll once a second
2291 * to work around cases where sharing an edge triggered interrupt.
2293 static inline void sky2_idle_start(struct sky2_hw *hw)
2295 if (idle_timeout > 0)
2296 mod_timer(&hw->idle_timer,
2297 jiffies + msecs_to_jiffies(idle_timeout));
2300 static void sky2_idle(unsigned long arg)
2302 struct sky2_hw *hw = (struct sky2_hw *) arg;
2303 struct net_device *dev = hw->dev[0];
2305 if (__netif_rx_schedule_prep(dev))
2306 __netif_rx_schedule(dev);
2308 mod_timer(&hw->idle_timer, jiffies + msecs_to_jiffies(idle_timeout));
2312 static int sky2_poll(struct net_device *dev0, int *budget)
2314 struct sky2_hw *hw = ((struct sky2_port *) netdev_priv(dev0))->hw;
2315 int work_limit = min(dev0->quota, *budget);
2317 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2319 if (status & Y2_IS_HW_ERR)
2322 if (status & Y2_IS_IRQ_PHY1)
2323 sky2_phy_intr(hw, 0);
2325 if (status & Y2_IS_IRQ_PHY2)
2326 sky2_phy_intr(hw, 1);
2328 if (status & Y2_IS_IRQ_MAC1)
2329 sky2_mac_intr(hw, 0);
2331 if (status & Y2_IS_IRQ_MAC2)
2332 sky2_mac_intr(hw, 1);
2334 if (status & Y2_IS_CHK_RX1)
2335 sky2_descriptor_error(hw, 0, "receive", Y2_IS_CHK_RX1);
2337 if (status & Y2_IS_CHK_RX2)
2338 sky2_descriptor_error(hw, 1, "receive", Y2_IS_CHK_RX2);
2340 if (status & Y2_IS_CHK_TXA1)
2341 sky2_descriptor_error(hw, 0, "transmit", Y2_IS_CHK_TXA1);
2343 if (status & Y2_IS_CHK_TXA2)
2344 sky2_descriptor_error(hw, 1, "transmit", Y2_IS_CHK_TXA2);
2346 work_done = sky2_status_intr(hw, work_limit);
2347 if (work_done < work_limit) {
2348 netif_rx_complete(dev0);
2350 sky2_read32(hw, B0_Y2_SP_LISR);
2353 *budget -= work_done;
2354 dev0->quota -= work_done;
2359 static irqreturn_t sky2_intr(int irq, void *dev_id)
2361 struct sky2_hw *hw = dev_id;
2362 struct net_device *dev0 = hw->dev[0];
2365 /* Reading this mask interrupts as side effect */
2366 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2367 if (status == 0 || status == ~0)
2370 prefetch(&hw->st_le[hw->st_idx]);
2371 if (likely(__netif_rx_schedule_prep(dev0)))
2372 __netif_rx_schedule(dev0);
2377 #ifdef CONFIG_NET_POLL_CONTROLLER
2378 static void sky2_netpoll(struct net_device *dev)
2380 struct sky2_port *sky2 = netdev_priv(dev);
2381 struct net_device *dev0 = sky2->hw->dev[0];
2383 if (netif_running(dev) && __netif_rx_schedule_prep(dev0))
2384 __netif_rx_schedule(dev0);
2388 /* Chip internal frequency for clock calculations */
2389 static inline u32 sky2_mhz(const struct sky2_hw *hw)
2391 switch (hw->chip_id) {
2392 case CHIP_ID_YUKON_EC:
2393 case CHIP_ID_YUKON_EC_U:
2394 return 125; /* 125 Mhz */
2395 case CHIP_ID_YUKON_FE:
2396 return 100; /* 100 Mhz */
2397 default: /* YUKON_XL */
2398 return 156; /* 156 Mhz */
2402 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2404 return sky2_mhz(hw) * us;
2407 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2409 return clk / sky2_mhz(hw);
2413 static int sky2_reset(struct sky2_hw *hw)
2419 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2421 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2422 if (hw->chip_id < CHIP_ID_YUKON_XL || hw->chip_id > CHIP_ID_YUKON_FE) {
2423 printk(KERN_ERR PFX "%s: unsupported chip type 0x%x\n",
2424 pci_name(hw->pdev), hw->chip_id);
2428 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2430 /* This rev is really old, and requires untested workarounds */
2431 if (hw->chip_id == CHIP_ID_YUKON_EC && hw->chip_rev == CHIP_REV_YU_EC_A1) {
2432 printk(KERN_ERR PFX "%s: unsupported revision Yukon-%s (0x%x) rev %d\n",
2433 pci_name(hw->pdev), yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
2434 hw->chip_id, hw->chip_rev);
2439 if (hw->chip_id <= CHIP_ID_YUKON_EC) {
2440 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2441 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2445 sky2_write8(hw, B0_CTST, CS_RST_SET);
2446 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2448 /* clear PCI errors, if any */
2449 status = sky2_pci_read16(hw, PCI_STATUS);
2451 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2452 sky2_pci_write16(hw, PCI_STATUS, status | PCI_STATUS_ERROR_BITS);
2455 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2457 /* clear any PEX errors */
2458 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
2459 sky2_pci_write32(hw, PEX_UNC_ERR_STAT, 0xffffffffUL);
2462 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
2464 t8 = sky2_read8(hw, B2_Y2_HW_RES);
2465 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
2466 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2470 sky2_set_power_state(hw, PCI_D0);
2472 for (i = 0; i < hw->ports; i++) {
2473 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2474 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2477 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2479 /* Clear I2C IRQ noise */
2480 sky2_write32(hw, B2_I2C_IRQ, 1);
2482 /* turn off hardware timer (unused) */
2483 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2484 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
2486 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
2488 /* Turn off descriptor polling */
2489 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
2491 /* Turn off receive timestamp */
2492 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
2493 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2495 /* enable the Tx Arbiters */
2496 for (i = 0; i < hw->ports; i++)
2497 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
2499 /* Initialize ram interface */
2500 for (i = 0; i < hw->ports; i++) {
2501 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
2503 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
2504 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
2505 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
2506 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
2507 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
2508 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
2509 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
2510 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
2511 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
2512 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
2513 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
2514 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
2517 sky2_write32(hw, B0_HWE_IMSK, Y2_HWE_ALL_MASK);
2519 for (i = 0; i < hw->ports; i++)
2520 sky2_gmac_reset(hw, i);
2522 memset(hw->st_le, 0, STATUS_LE_BYTES);
2525 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
2526 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
2528 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
2529 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
2531 /* Set the list last index */
2532 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
2534 sky2_write16(hw, STAT_TX_IDX_TH, 10);
2535 sky2_write8(hw, STAT_FIFO_WM, 16);
2537 /* set Status-FIFO ISR watermark */
2538 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
2539 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
2541 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
2543 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
2544 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
2545 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
2547 /* enable status unit */
2548 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
2550 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2551 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2552 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2557 static u32 sky2_supported_modes(const struct sky2_hw *hw)
2559 if (sky2_is_copper(hw)) {
2560 u32 modes = SUPPORTED_10baseT_Half
2561 | SUPPORTED_10baseT_Full
2562 | SUPPORTED_100baseT_Half
2563 | SUPPORTED_100baseT_Full
2564 | SUPPORTED_Autoneg | SUPPORTED_TP;
2566 if (hw->chip_id != CHIP_ID_YUKON_FE)
2567 modes |= SUPPORTED_1000baseT_Half
2568 | SUPPORTED_1000baseT_Full;
2571 return SUPPORTED_1000baseT_Half
2572 | SUPPORTED_1000baseT_Full
2577 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2579 struct sky2_port *sky2 = netdev_priv(dev);
2580 struct sky2_hw *hw = sky2->hw;
2582 ecmd->transceiver = XCVR_INTERNAL;
2583 ecmd->supported = sky2_supported_modes(hw);
2584 ecmd->phy_address = PHY_ADDR_MARV;
2585 if (sky2_is_copper(hw)) {
2586 ecmd->supported = SUPPORTED_10baseT_Half
2587 | SUPPORTED_10baseT_Full
2588 | SUPPORTED_100baseT_Half
2589 | SUPPORTED_100baseT_Full
2590 | SUPPORTED_1000baseT_Half
2591 | SUPPORTED_1000baseT_Full
2592 | SUPPORTED_Autoneg | SUPPORTED_TP;
2593 ecmd->port = PORT_TP;
2594 ecmd->speed = sky2->speed;
2596 ecmd->speed = SPEED_1000;
2597 ecmd->port = PORT_FIBRE;
2600 ecmd->advertising = sky2->advertising;
2601 ecmd->autoneg = sky2->autoneg;
2602 ecmd->duplex = sky2->duplex;
2606 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2608 struct sky2_port *sky2 = netdev_priv(dev);
2609 const struct sky2_hw *hw = sky2->hw;
2610 u32 supported = sky2_supported_modes(hw);
2612 if (ecmd->autoneg == AUTONEG_ENABLE) {
2613 ecmd->advertising = supported;
2619 switch (ecmd->speed) {
2621 if (ecmd->duplex == DUPLEX_FULL)
2622 setting = SUPPORTED_1000baseT_Full;
2623 else if (ecmd->duplex == DUPLEX_HALF)
2624 setting = SUPPORTED_1000baseT_Half;
2629 if (ecmd->duplex == DUPLEX_FULL)
2630 setting = SUPPORTED_100baseT_Full;
2631 else if (ecmd->duplex == DUPLEX_HALF)
2632 setting = SUPPORTED_100baseT_Half;
2638 if (ecmd->duplex == DUPLEX_FULL)
2639 setting = SUPPORTED_10baseT_Full;
2640 else if (ecmd->duplex == DUPLEX_HALF)
2641 setting = SUPPORTED_10baseT_Half;
2649 if ((setting & supported) == 0)
2652 sky2->speed = ecmd->speed;
2653 sky2->duplex = ecmd->duplex;
2656 sky2->autoneg = ecmd->autoneg;
2657 sky2->advertising = ecmd->advertising;
2659 if (netif_running(dev))
2660 sky2_phy_reinit(sky2);
2665 static void sky2_get_drvinfo(struct net_device *dev,
2666 struct ethtool_drvinfo *info)
2668 struct sky2_port *sky2 = netdev_priv(dev);
2670 strcpy(info->driver, DRV_NAME);
2671 strcpy(info->version, DRV_VERSION);
2672 strcpy(info->fw_version, "N/A");
2673 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
2676 static const struct sky2_stat {
2677 char name[ETH_GSTRING_LEN];
2680 { "tx_bytes", GM_TXO_OK_HI },
2681 { "rx_bytes", GM_RXO_OK_HI },
2682 { "tx_broadcast", GM_TXF_BC_OK },
2683 { "rx_broadcast", GM_RXF_BC_OK },
2684 { "tx_multicast", GM_TXF_MC_OK },
2685 { "rx_multicast", GM_RXF_MC_OK },
2686 { "tx_unicast", GM_TXF_UC_OK },
2687 { "rx_unicast", GM_RXF_UC_OK },
2688 { "tx_mac_pause", GM_TXF_MPAUSE },
2689 { "rx_mac_pause", GM_RXF_MPAUSE },
2690 { "collisions", GM_TXF_COL },
2691 { "late_collision",GM_TXF_LAT_COL },
2692 { "aborted", GM_TXF_ABO_COL },
2693 { "single_collisions", GM_TXF_SNG_COL },
2694 { "multi_collisions", GM_TXF_MUL_COL },
2696 { "rx_short", GM_RXF_SHT },
2697 { "rx_runt", GM_RXE_FRAG },
2698 { "rx_64_byte_packets", GM_RXF_64B },
2699 { "rx_65_to_127_byte_packets", GM_RXF_127B },
2700 { "rx_128_to_255_byte_packets", GM_RXF_255B },
2701 { "rx_256_to_511_byte_packets", GM_RXF_511B },
2702 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
2703 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
2704 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
2705 { "rx_too_long", GM_RXF_LNG_ERR },
2706 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
2707 { "rx_jabber", GM_RXF_JAB_PKT },
2708 { "rx_fcs_error", GM_RXF_FCS_ERR },
2710 { "tx_64_byte_packets", GM_TXF_64B },
2711 { "tx_65_to_127_byte_packets", GM_TXF_127B },
2712 { "tx_128_to_255_byte_packets", GM_TXF_255B },
2713 { "tx_256_to_511_byte_packets", GM_TXF_511B },
2714 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
2715 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
2716 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
2717 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
2720 static u32 sky2_get_rx_csum(struct net_device *dev)
2722 struct sky2_port *sky2 = netdev_priv(dev);
2724 return sky2->rx_csum;
2727 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
2729 struct sky2_port *sky2 = netdev_priv(dev);
2731 sky2->rx_csum = data;
2733 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2734 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
2739 static u32 sky2_get_msglevel(struct net_device *netdev)
2741 struct sky2_port *sky2 = netdev_priv(netdev);
2742 return sky2->msg_enable;
2745 static int sky2_nway_reset(struct net_device *dev)
2747 struct sky2_port *sky2 = netdev_priv(dev);
2749 if (!netif_running(dev) || sky2->autoneg != AUTONEG_ENABLE)
2752 sky2_phy_reinit(sky2);
2757 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
2759 struct sky2_hw *hw = sky2->hw;
2760 unsigned port = sky2->port;
2763 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
2764 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
2765 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
2766 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
2768 for (i = 2; i < count; i++)
2769 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
2772 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
2774 struct sky2_port *sky2 = netdev_priv(netdev);
2775 sky2->msg_enable = value;
2778 static int sky2_get_stats_count(struct net_device *dev)
2780 return ARRAY_SIZE(sky2_stats);
2783 static void sky2_get_ethtool_stats(struct net_device *dev,
2784 struct ethtool_stats *stats, u64 * data)
2786 struct sky2_port *sky2 = netdev_priv(dev);
2788 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
2791 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
2795 switch (stringset) {
2797 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
2798 memcpy(data + i * ETH_GSTRING_LEN,
2799 sky2_stats[i].name, ETH_GSTRING_LEN);
2804 /* Use hardware MIB variables for critical path statistics and
2805 * transmit feedback not reported at interrupt.
2806 * Other errors are accounted for in interrupt handler.
2808 static struct net_device_stats *sky2_get_stats(struct net_device *dev)
2810 struct sky2_port *sky2 = netdev_priv(dev);
2813 sky2_phy_stats(sky2, data, ARRAY_SIZE(data));
2815 sky2->net_stats.tx_bytes = data[0];
2816 sky2->net_stats.rx_bytes = data[1];
2817 sky2->net_stats.tx_packets = data[2] + data[4] + data[6];
2818 sky2->net_stats.rx_packets = data[3] + data[5] + data[7];
2819 sky2->net_stats.multicast = data[3] + data[5];
2820 sky2->net_stats.collisions = data[10];
2821 sky2->net_stats.tx_aborted_errors = data[12];
2823 return &sky2->net_stats;
2826 static int sky2_set_mac_address(struct net_device *dev, void *p)
2828 struct sky2_port *sky2 = netdev_priv(dev);
2829 struct sky2_hw *hw = sky2->hw;
2830 unsigned port = sky2->port;
2831 const struct sockaddr *addr = p;
2833 if (!is_valid_ether_addr(addr->sa_data))
2834 return -EADDRNOTAVAIL;
2836 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
2837 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
2838 dev->dev_addr, ETH_ALEN);
2839 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
2840 dev->dev_addr, ETH_ALEN);
2842 /* virtual address for data */
2843 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
2845 /* physical address: used for pause frames */
2846 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
2851 static void sky2_set_multicast(struct net_device *dev)
2853 struct sky2_port *sky2 = netdev_priv(dev);
2854 struct sky2_hw *hw = sky2->hw;
2855 unsigned port = sky2->port;
2856 struct dev_mc_list *list = dev->mc_list;
2860 memset(filter, 0, sizeof(filter));
2862 reg = gma_read16(hw, port, GM_RX_CTRL);
2863 reg |= GM_RXCR_UCF_ENA;
2865 if (dev->flags & IFF_PROMISC) /* promiscuous */
2866 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
2867 else if ((dev->flags & IFF_ALLMULTI) || dev->mc_count > 16) /* all multicast */
2868 memset(filter, 0xff, sizeof(filter));
2869 else if (dev->mc_count == 0) /* no multicast */
2870 reg &= ~GM_RXCR_MCF_ENA;
2873 reg |= GM_RXCR_MCF_ENA;
2875 for (i = 0; list && i < dev->mc_count; i++, list = list->next) {
2876 u32 bit = ether_crc(ETH_ALEN, list->dmi_addr) & 0x3f;
2877 filter[bit / 8] |= 1 << (bit % 8);
2881 gma_write16(hw, port, GM_MC_ADDR_H1,
2882 (u16) filter[0] | ((u16) filter[1] << 8));
2883 gma_write16(hw, port, GM_MC_ADDR_H2,
2884 (u16) filter[2] | ((u16) filter[3] << 8));
2885 gma_write16(hw, port, GM_MC_ADDR_H3,
2886 (u16) filter[4] | ((u16) filter[5] << 8));
2887 gma_write16(hw, port, GM_MC_ADDR_H4,
2888 (u16) filter[6] | ((u16) filter[7] << 8));
2890 gma_write16(hw, port, GM_RX_CTRL, reg);
2893 /* Can have one global because blinking is controlled by
2894 * ethtool and that is always under RTNL mutex
2896 static void sky2_led(struct sky2_hw *hw, unsigned port, int on)
2900 switch (hw->chip_id) {
2901 case CHIP_ID_YUKON_XL:
2902 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2903 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2904 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
2905 on ? (PHY_M_LEDC_LOS_CTRL(1) |
2906 PHY_M_LEDC_INIT_CTRL(7) |
2907 PHY_M_LEDC_STA1_CTRL(7) |
2908 PHY_M_LEDC_STA0_CTRL(7))
2911 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2915 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
2916 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
2917 on ? PHY_M_LED_MO_DUP(MO_LED_ON) |
2918 PHY_M_LED_MO_10(MO_LED_ON) |
2919 PHY_M_LED_MO_100(MO_LED_ON) |
2920 PHY_M_LED_MO_1000(MO_LED_ON) |
2921 PHY_M_LED_MO_RX(MO_LED_ON)
2922 : PHY_M_LED_MO_DUP(MO_LED_OFF) |
2923 PHY_M_LED_MO_10(MO_LED_OFF) |
2924 PHY_M_LED_MO_100(MO_LED_OFF) |
2925 PHY_M_LED_MO_1000(MO_LED_OFF) |
2926 PHY_M_LED_MO_RX(MO_LED_OFF));
2931 /* blink LED's for finding board */
2932 static int sky2_phys_id(struct net_device *dev, u32 data)
2934 struct sky2_port *sky2 = netdev_priv(dev);
2935 struct sky2_hw *hw = sky2->hw;
2936 unsigned port = sky2->port;
2937 u16 ledctrl, ledover = 0;
2942 if (!data || data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ))
2943 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT);
2947 /* save initial values */
2948 spin_lock_bh(&sky2->phy_lock);
2949 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2950 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2951 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2952 ledctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
2953 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2955 ledctrl = gm_phy_read(hw, port, PHY_MARV_LED_CTRL);
2956 ledover = gm_phy_read(hw, port, PHY_MARV_LED_OVER);
2960 while (!interrupted && ms > 0) {
2961 sky2_led(hw, port, onoff);
2964 spin_unlock_bh(&sky2->phy_lock);
2965 interrupted = msleep_interruptible(250);
2966 spin_lock_bh(&sky2->phy_lock);
2971 /* resume regularly scheduled programming */
2972 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2973 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2974 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2975 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ledctrl);
2976 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2978 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
2979 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
2981 spin_unlock_bh(&sky2->phy_lock);
2986 static void sky2_get_pauseparam(struct net_device *dev,
2987 struct ethtool_pauseparam *ecmd)
2989 struct sky2_port *sky2 = netdev_priv(dev);
2991 switch (sky2->flow_mode) {
2993 ecmd->tx_pause = ecmd->rx_pause = 0;
2996 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
2999 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
3002 ecmd->tx_pause = ecmd->rx_pause = 1;
3005 ecmd->autoneg = sky2->autoneg;
3008 static int sky2_set_pauseparam(struct net_device *dev,
3009 struct ethtool_pauseparam *ecmd)
3011 struct sky2_port *sky2 = netdev_priv(dev);
3013 sky2->autoneg = ecmd->autoneg;
3014 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
3016 if (netif_running(dev))
3017 sky2_phy_reinit(sky2);
3022 static int sky2_get_coalesce(struct net_device *dev,
3023 struct ethtool_coalesce *ecmd)
3025 struct sky2_port *sky2 = netdev_priv(dev);
3026 struct sky2_hw *hw = sky2->hw;
3028 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
3029 ecmd->tx_coalesce_usecs = 0;
3031 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
3032 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
3034 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
3036 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
3037 ecmd->rx_coalesce_usecs = 0;
3039 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
3040 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
3042 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
3044 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
3045 ecmd->rx_coalesce_usecs_irq = 0;
3047 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
3048 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
3051 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
3056 /* Note: this affect both ports */
3057 static int sky2_set_coalesce(struct net_device *dev,
3058 struct ethtool_coalesce *ecmd)
3060 struct sky2_port *sky2 = netdev_priv(dev);
3061 struct sky2_hw *hw = sky2->hw;
3062 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
3064 if (ecmd->tx_coalesce_usecs > tmax ||
3065 ecmd->rx_coalesce_usecs > tmax ||
3066 ecmd->rx_coalesce_usecs_irq > tmax)
3069 if (ecmd->tx_max_coalesced_frames >= TX_RING_SIZE-1)
3071 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
3073 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
3076 if (ecmd->tx_coalesce_usecs == 0)
3077 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
3079 sky2_write32(hw, STAT_TX_TIMER_INI,
3080 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
3081 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3083 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
3085 if (ecmd->rx_coalesce_usecs == 0)
3086 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
3088 sky2_write32(hw, STAT_LEV_TIMER_INI,
3089 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
3090 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3092 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
3094 if (ecmd->rx_coalesce_usecs_irq == 0)
3095 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
3097 sky2_write32(hw, STAT_ISR_TIMER_INI,
3098 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
3099 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3101 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
3105 static void sky2_get_ringparam(struct net_device *dev,
3106 struct ethtool_ringparam *ering)
3108 struct sky2_port *sky2 = netdev_priv(dev);
3110 ering->rx_max_pending = RX_MAX_PENDING;
3111 ering->rx_mini_max_pending = 0;
3112 ering->rx_jumbo_max_pending = 0;
3113 ering->tx_max_pending = TX_RING_SIZE - 1;
3115 ering->rx_pending = sky2->rx_pending;
3116 ering->rx_mini_pending = 0;
3117 ering->rx_jumbo_pending = 0;
3118 ering->tx_pending = sky2->tx_pending;
3121 static int sky2_set_ringparam(struct net_device *dev,
3122 struct ethtool_ringparam *ering)
3124 struct sky2_port *sky2 = netdev_priv(dev);
3127 if (ering->rx_pending > RX_MAX_PENDING ||
3128 ering->rx_pending < 8 ||
3129 ering->tx_pending < MAX_SKB_TX_LE ||
3130 ering->tx_pending > TX_RING_SIZE - 1)
3133 if (netif_running(dev))
3136 sky2->rx_pending = ering->rx_pending;
3137 sky2->tx_pending = ering->tx_pending;
3139 if (netif_running(dev)) {
3144 sky2_set_multicast(dev);
3150 static int sky2_get_regs_len(struct net_device *dev)
3156 * Returns copy of control register region
3157 * Note: access to the RAM address register set will cause timeouts.
3159 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
3162 const struct sky2_port *sky2 = netdev_priv(dev);
3163 const void __iomem *io = sky2->hw->regs;
3165 BUG_ON(regs->len < B3_RI_WTO_R1);
3167 memset(p, 0, regs->len);
3169 memcpy_fromio(p, io, B3_RAM_ADDR);
3171 memcpy_fromio(p + B3_RI_WTO_R1,
3173 regs->len - B3_RI_WTO_R1);
3176 static const struct ethtool_ops sky2_ethtool_ops = {
3177 .get_settings = sky2_get_settings,
3178 .set_settings = sky2_set_settings,
3179 .get_drvinfo = sky2_get_drvinfo,
3180 .get_msglevel = sky2_get_msglevel,
3181 .set_msglevel = sky2_set_msglevel,
3182 .nway_reset = sky2_nway_reset,
3183 .get_regs_len = sky2_get_regs_len,
3184 .get_regs = sky2_get_regs,
3185 .get_link = ethtool_op_get_link,
3186 .get_sg = ethtool_op_get_sg,
3187 .set_sg = ethtool_op_set_sg,
3188 .get_tx_csum = ethtool_op_get_tx_csum,
3189 .set_tx_csum = ethtool_op_set_tx_csum,
3190 .get_tso = ethtool_op_get_tso,
3191 .set_tso = ethtool_op_set_tso,
3192 .get_rx_csum = sky2_get_rx_csum,
3193 .set_rx_csum = sky2_set_rx_csum,
3194 .get_strings = sky2_get_strings,
3195 .get_coalesce = sky2_get_coalesce,
3196 .set_coalesce = sky2_set_coalesce,
3197 .get_ringparam = sky2_get_ringparam,
3198 .set_ringparam = sky2_set_ringparam,
3199 .get_pauseparam = sky2_get_pauseparam,
3200 .set_pauseparam = sky2_set_pauseparam,
3201 .phys_id = sky2_phys_id,
3202 .get_stats_count = sky2_get_stats_count,
3203 .get_ethtool_stats = sky2_get_ethtool_stats,
3204 .get_perm_addr = ethtool_op_get_perm_addr,
3207 /* Initialize network device */
3208 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
3209 unsigned port, int highmem)
3211 struct sky2_port *sky2;
3212 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
3215 printk(KERN_ERR "sky2 etherdev alloc failed");
3219 SET_MODULE_OWNER(dev);
3220 SET_NETDEV_DEV(dev, &hw->pdev->dev);
3221 dev->irq = hw->pdev->irq;
3222 dev->open = sky2_up;
3223 dev->stop = sky2_down;
3224 dev->do_ioctl = sky2_ioctl;
3225 dev->hard_start_xmit = sky2_xmit_frame;
3226 dev->get_stats = sky2_get_stats;
3227 dev->set_multicast_list = sky2_set_multicast;
3228 dev->set_mac_address = sky2_set_mac_address;
3229 dev->change_mtu = sky2_change_mtu;
3230 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
3231 dev->tx_timeout = sky2_tx_timeout;
3232 dev->watchdog_timeo = TX_WATCHDOG;
3234 dev->poll = sky2_poll;
3235 dev->weight = NAPI_WEIGHT;
3236 #ifdef CONFIG_NET_POLL_CONTROLLER
3237 dev->poll_controller = sky2_netpoll;
3240 sky2 = netdev_priv(dev);
3243 sky2->msg_enable = netif_msg_init(debug, default_msg);
3245 /* Auto speed and flow control */
3246 sky2->autoneg = AUTONEG_ENABLE;
3247 sky2->flow_mode = FC_BOTH;
3251 sky2->advertising = sky2_supported_modes(hw);
3254 spin_lock_init(&sky2->phy_lock);
3255 sky2->tx_pending = TX_DEF_PENDING;
3256 sky2->rx_pending = RX_DEF_PENDING;
3258 hw->dev[port] = dev;
3262 if (hw->chip_id != CHIP_ID_YUKON_EC_U)
3263 dev->features |= NETIF_F_TSO;
3265 dev->features |= NETIF_F_HIGHDMA;
3266 dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
3268 #ifdef SKY2_VLAN_TAG_USED
3269 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
3270 dev->vlan_rx_register = sky2_vlan_rx_register;
3271 dev->vlan_rx_kill_vid = sky2_vlan_rx_kill_vid;
3274 /* read the mac address */
3275 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
3276 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
3278 /* device is off until link detection */
3279 netif_carrier_off(dev);
3280 netif_stop_queue(dev);
3285 static void __devinit sky2_show_addr(struct net_device *dev)
3287 const struct sky2_port *sky2 = netdev_priv(dev);
3289 if (netif_msg_probe(sky2))
3290 printk(KERN_INFO PFX "%s: addr %02x:%02x:%02x:%02x:%02x:%02x\n",
3292 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
3293 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
3296 /* Handle software interrupt used during MSI test */
3297 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
3299 struct sky2_hw *hw = dev_id;
3300 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
3305 if (status & Y2_IS_IRQ_SW) {
3306 hw->msi_detected = 1;
3307 wake_up(&hw->msi_wait);
3308 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3310 sky2_write32(hw, B0_Y2_SP_ICR, 2);
3315 /* Test interrupt path by forcing a a software IRQ */
3316 static int __devinit sky2_test_msi(struct sky2_hw *hw)
3318 struct pci_dev *pdev = hw->pdev;
3321 init_waitqueue_head (&hw->msi_wait);
3323 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
3325 err = request_irq(pdev->irq, sky2_test_intr, IRQF_SHARED, DRV_NAME, hw);
3327 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3328 pci_name(pdev), pdev->irq);
3332 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
3333 sky2_read8(hw, B0_CTST);
3335 wait_event_timeout(hw->msi_wait, hw->msi_detected, HZ/10);
3337 if (!hw->msi_detected) {
3338 /* MSI test failed, go back to INTx mode */
3339 printk(KERN_INFO PFX "%s: No interrupt generated using MSI, "
3340 "switching to INTx mode.\n",
3344 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3347 sky2_write32(hw, B0_IMSK, 0);
3348 sky2_read32(hw, B0_IMSK);
3350 free_irq(pdev->irq, hw);
3355 static int __devinit sky2_probe(struct pci_dev *pdev,
3356 const struct pci_device_id *ent)
3358 struct net_device *dev, *dev1 = NULL;
3360 int err, pm_cap, using_dac = 0;
3362 err = pci_enable_device(pdev);
3364 printk(KERN_ERR PFX "%s cannot enable PCI device\n",
3369 err = pci_request_regions(pdev, DRV_NAME);
3371 printk(KERN_ERR PFX "%s cannot obtain PCI resources\n",
3376 pci_set_master(pdev);
3378 /* Find power-management capability. */
3379 pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
3381 printk(KERN_ERR PFX "Cannot find PowerManagement capability, "
3384 goto err_out_free_regions;
3387 if (sizeof(dma_addr_t) > sizeof(u32) &&
3388 !(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
3390 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3392 printk(KERN_ERR PFX "%s unable to obtain 64 bit DMA "
3393 "for consistent allocations\n", pci_name(pdev));
3394 goto err_out_free_regions;
3398 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
3400 printk(KERN_ERR PFX "%s no usable DMA configuration\n",
3402 goto err_out_free_regions;
3407 hw = kzalloc(sizeof(*hw), GFP_KERNEL);
3409 printk(KERN_ERR PFX "%s: cannot allocate hardware struct\n",
3411 goto err_out_free_regions;
3416 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
3418 printk(KERN_ERR PFX "%s: cannot map device registers\n",
3420 goto err_out_free_hw;
3422 hw->pm_cap = pm_cap;
3425 /* The sk98lin vendor driver uses hardware byte swapping but
3426 * this driver uses software swapping.
3430 reg = sky2_pci_read32(hw, PCI_DEV_REG2);
3431 reg &= ~PCI_REV_DESC;
3432 sky2_pci_write32(hw, PCI_DEV_REG2, reg);
3436 /* ring for status responses */
3437 hw->st_le = pci_alloc_consistent(hw->pdev, STATUS_LE_BYTES,
3440 goto err_out_iounmap;
3442 err = sky2_reset(hw);
3444 goto err_out_iounmap;
3446 printk(KERN_INFO PFX "v%s addr 0x%llx irq %d Yukon-%s (0x%x) rev %d\n",
3447 DRV_VERSION, (unsigned long long)pci_resource_start(pdev, 0),
3448 pdev->irq, yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
3449 hw->chip_id, hw->chip_rev);
3451 dev = sky2_init_netdev(hw, 0, using_dac);
3453 goto err_out_free_pci;
3455 if (!disable_msi && pci_enable_msi(pdev) == 0) {
3456 err = sky2_test_msi(hw);
3457 if (err == -EOPNOTSUPP)
3458 pci_disable_msi(pdev);
3460 goto err_out_free_netdev;
3463 err = register_netdev(dev);
3465 printk(KERN_ERR PFX "%s: cannot register net device\n",
3467 goto err_out_free_netdev;
3470 err = request_irq(pdev->irq, sky2_intr, IRQF_SHARED, dev->name, hw);
3472 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3473 pci_name(pdev), pdev->irq);
3474 goto err_out_unregister;
3476 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3478 sky2_show_addr(dev);
3480 if (hw->ports > 1 && (dev1 = sky2_init_netdev(hw, 1, using_dac))) {
3481 if (register_netdev(dev1) == 0)
3482 sky2_show_addr(dev1);
3484 /* Failure to register second port need not be fatal */
3485 printk(KERN_WARNING PFX
3486 "register of second port failed\n");
3492 setup_timer(&hw->idle_timer, sky2_idle, (unsigned long) hw);
3493 sky2_idle_start(hw);
3495 pci_set_drvdata(pdev, hw);
3500 pci_disable_msi(pdev);
3501 unregister_netdev(dev);
3502 err_out_free_netdev:
3505 sky2_write8(hw, B0_CTST, CS_RST_SET);
3506 pci_free_consistent(hw->pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3511 err_out_free_regions:
3512 pci_release_regions(pdev);
3513 pci_disable_device(pdev);
3518 static void __devexit sky2_remove(struct pci_dev *pdev)
3520 struct sky2_hw *hw = pci_get_drvdata(pdev);
3521 struct net_device *dev0, *dev1;
3526 del_timer_sync(&hw->idle_timer);
3528 sky2_write32(hw, B0_IMSK, 0);
3529 synchronize_irq(hw->pdev->irq);
3534 unregister_netdev(dev1);
3535 unregister_netdev(dev0);
3537 sky2_set_power_state(hw, PCI_D3hot);
3538 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
3539 sky2_write8(hw, B0_CTST, CS_RST_SET);
3540 sky2_read8(hw, B0_CTST);
3542 free_irq(pdev->irq, hw);
3543 pci_disable_msi(pdev);
3544 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3545 pci_release_regions(pdev);
3546 pci_disable_device(pdev);
3554 pci_set_drvdata(pdev, NULL);
3558 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
3560 struct sky2_hw *hw = pci_get_drvdata(pdev);
3562 pci_power_t pstate = pci_choose_state(pdev, state);
3564 if (!(pstate == PCI_D3hot || pstate == PCI_D3cold))
3567 del_timer_sync(&hw->idle_timer);
3568 netif_poll_disable(hw->dev[0]);
3570 for (i = 0; i < hw->ports; i++) {
3571 struct net_device *dev = hw->dev[i];
3573 if (netif_running(dev)) {
3575 netif_device_detach(dev);
3579 sky2_write32(hw, B0_IMSK, 0);
3580 pci_save_state(pdev);
3581 sky2_set_power_state(hw, pstate);
3585 static int sky2_resume(struct pci_dev *pdev)
3587 struct sky2_hw *hw = pci_get_drvdata(pdev);
3590 pci_restore_state(pdev);
3591 pci_enable_wake(pdev, PCI_D0, 0);
3592 sky2_set_power_state(hw, PCI_D0);
3594 err = sky2_reset(hw);
3598 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3600 for (i = 0; i < hw->ports; i++) {
3601 struct net_device *dev = hw->dev[i];
3602 if (netif_running(dev)) {
3603 netif_device_attach(dev);
3607 printk(KERN_ERR PFX "%s: could not up: %d\n",
3615 netif_poll_enable(hw->dev[0]);
3616 sky2_idle_start(hw);
3622 static struct pci_driver sky2_driver = {
3624 .id_table = sky2_id_table,
3625 .probe = sky2_probe,
3626 .remove = __devexit_p(sky2_remove),
3628 .suspend = sky2_suspend,
3629 .resume = sky2_resume,
3633 static int __init sky2_init_module(void)
3635 return pci_register_driver(&sky2_driver);
3638 static void __exit sky2_cleanup_module(void)
3640 pci_unregister_driver(&sky2_driver);
3643 module_init(sky2_init_module);
3644 module_exit(sky2_cleanup_module);
3646 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
3647 MODULE_AUTHOR("Stephen Hemminger <shemminger@osdl.org>");
3648 MODULE_LICENSE("GPL");
3649 MODULE_VERSION(DRV_VERSION);