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.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 #include <linux/crc32.h>
26 #include <linux/kernel.h>
27 #include <linux/version.h>
28 #include <linux/module.h>
29 #include <linux/netdevice.h>
30 #include <linux/dma-mapping.h>
31 #include <linux/etherdevice.h>
32 #include <linux/ethtool.h>
33 #include <linux/pci.h>
35 #include <linux/tcp.h>
37 #include <linux/delay.h>
38 #include <linux/workqueue.h>
39 #include <linux/if_vlan.h>
40 #include <linux/prefetch.h>
41 #include <linux/mii.h>
45 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
46 #define SKY2_VLAN_TAG_USED 1
51 #define DRV_NAME "sky2"
52 #define DRV_VERSION "1.10"
53 #define PFX DRV_NAME " "
56 * The Yukon II chipset takes 64 bit command blocks (called list elements)
57 * that are organized into three (receive, transmit, status) different rings
61 #define RX_LE_SIZE 1024
62 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
63 #define RX_MAX_PENDING (RX_LE_SIZE/6 - 2)
64 #define RX_DEF_PENDING RX_MAX_PENDING
65 #define RX_SKB_ALIGN 8
66 #define RX_BUF_WRITE 16
68 #define TX_RING_SIZE 512
69 #define TX_DEF_PENDING (TX_RING_SIZE - 1)
70 #define TX_MIN_PENDING 64
71 #define MAX_SKB_TX_LE (4 + (sizeof(dma_addr_t)/sizeof(u32))*MAX_SKB_FRAGS)
73 #define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
74 #define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
75 #define TX_WATCHDOG (5 * HZ)
76 #define NAPI_WEIGHT 64
77 #define PHY_RETRIES 1000
79 #define RING_NEXT(x,s) (((x)+1) & ((s)-1))
81 static const u32 default_msg =
82 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
83 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
84 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
86 static int debug = -1; /* defaults above */
87 module_param(debug, int, 0);
88 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
90 static int copybreak __read_mostly = 128;
91 module_param(copybreak, int, 0);
92 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
94 static int disable_msi = 0;
95 module_param(disable_msi, int, 0);
96 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
98 static int idle_timeout = 0;
99 module_param(idle_timeout, int, 0);
100 MODULE_PARM_DESC(idle_timeout, "Watchdog timer for lost interrupts (ms)");
102 static const struct pci_device_id sky2_id_table[] = {
103 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
104 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
105 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
106 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
107 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
108 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
109 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4356) }, /* 88EC033 */
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) }, /* 88E8052 */
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) }, /* 88E8050 */
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) }, /* 88E8053 */
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) }, /* 88E8055 */
125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) }, /* 88E8056 */
126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) }, /* 88EC036 */
127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) }, /* 88EC032 */
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) }, /* 88EC034 */
132 MODULE_DEVICE_TABLE(pci, sky2_id_table);
134 /* Avoid conditionals by using array */
135 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
136 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
137 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
139 /* This driver supports yukon2 chipset only */
140 static const char *yukon2_name[] = {
142 "EC Ultra", /* 0xb4 */
143 "UNKNOWN", /* 0xb5 */
148 /* Access to external PHY */
149 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
153 gma_write16(hw, port, GM_SMI_DATA, val);
154 gma_write16(hw, port, GM_SMI_CTRL,
155 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
157 for (i = 0; i < PHY_RETRIES; i++) {
158 if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
163 printk(KERN_WARNING PFX "%s: phy write timeout\n", hw->dev[port]->name);
167 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
171 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
172 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
174 for (i = 0; i < PHY_RETRIES; i++) {
175 if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL) {
176 *val = gma_read16(hw, port, GM_SMI_DATA);
186 static u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
190 if (__gm_phy_read(hw, port, reg, &v) != 0)
191 printk(KERN_WARNING PFX "%s: phy read timeout\n", hw->dev[port]->name);
195 static void sky2_set_power_state(struct sky2_hw *hw, pci_power_t state)
200 pr_debug("sky2_set_power_state %d\n", state);
201 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
203 power_control = sky2_pci_read16(hw, hw->pm_cap + PCI_PM_PMC);
204 vaux = (sky2_read16(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
205 (power_control & PCI_PM_CAP_PME_D3cold);
207 power_control = sky2_pci_read16(hw, hw->pm_cap + PCI_PM_CTRL);
209 power_control |= PCI_PM_CTRL_PME_STATUS;
210 power_control &= ~(PCI_PM_CTRL_STATE_MASK);
214 /* switch power to VCC (WA for VAUX problem) */
215 sky2_write8(hw, B0_POWER_CTRL,
216 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
218 /* disable Core Clock Division, */
219 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
221 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
222 /* enable bits are inverted */
223 sky2_write8(hw, B2_Y2_CLK_GATE,
224 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
225 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
226 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
228 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
230 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
233 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
234 reg1 = sky2_pci_read32(hw, PCI_DEV_REG4);
235 reg1 &= P_ASPM_CONTROL_MSK;
236 sky2_pci_write32(hw, PCI_DEV_REG4, reg1);
237 sky2_pci_write32(hw, PCI_DEV_REG5, 0);
244 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
245 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
247 /* enable bits are inverted */
248 sky2_write8(hw, B2_Y2_CLK_GATE,
249 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
250 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
251 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
253 /* switch power to VAUX */
254 if (vaux && state != PCI_D3cold)
255 sky2_write8(hw, B0_POWER_CTRL,
256 (PC_VAUX_ENA | PC_VCC_ENA |
257 PC_VAUX_ON | PC_VCC_OFF));
260 printk(KERN_ERR PFX "Unknown power state %d\n", state);
263 sky2_pci_write16(hw, hw->pm_cap + PCI_PM_CTRL, power_control);
264 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
267 static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
271 /* disable all GMAC IRQ's */
272 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
273 /* disable PHY IRQs */
274 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
276 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
277 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
278 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
279 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
281 reg = gma_read16(hw, port, GM_RX_CTRL);
282 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
283 gma_write16(hw, port, GM_RX_CTRL, reg);
286 /* flow control to advertise bits */
287 static const u16 copper_fc_adv[] = {
289 [FC_TX] = PHY_M_AN_ASP,
290 [FC_RX] = PHY_M_AN_PC,
291 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
294 /* flow control to advertise bits when using 1000BaseX */
295 static const u16 fiber_fc_adv[] = {
296 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
297 [FC_TX] = PHY_M_P_ASYM_MD_X,
298 [FC_RX] = PHY_M_P_SYM_MD_X,
299 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
302 /* flow control to GMA disable bits */
303 static const u16 gm_fc_disable[] = {
304 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
305 [FC_TX] = GM_GPCR_FC_RX_DIS,
306 [FC_RX] = GM_GPCR_FC_TX_DIS,
311 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
313 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
314 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
316 if (sky2->autoneg == AUTONEG_ENABLE &&
317 !(hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)) {
318 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
320 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
322 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
324 if (hw->chip_id == CHIP_ID_YUKON_EC)
325 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
327 ectrl |= PHY_M_EC_M_DSC(2) | PHY_M_EC_S_DSC(3);
329 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
332 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
333 if (sky2_is_copper(hw)) {
334 if (hw->chip_id == CHIP_ID_YUKON_FE) {
335 /* enable automatic crossover */
336 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
338 /* disable energy detect */
339 ctrl &= ~PHY_M_PC_EN_DET_MSK;
341 /* enable automatic crossover */
342 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
344 if (sky2->autoneg == AUTONEG_ENABLE &&
345 (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)) {
346 ctrl &= ~PHY_M_PC_DSC_MSK;
347 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
351 /* workaround for deviation #4.88 (CRC errors) */
352 /* disable Automatic Crossover */
354 ctrl &= ~PHY_M_PC_MDIX_MSK;
357 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
359 /* special setup for PHY 88E1112 Fiber */
360 if (hw->chip_id == CHIP_ID_YUKON_XL && !sky2_is_copper(hw)) {
361 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
363 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
364 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
365 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
366 ctrl &= ~PHY_M_MAC_MD_MSK;
367 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
368 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
370 if (hw->pmd_type == 'P') {
371 /* select page 1 to access Fiber registers */
372 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
374 /* for SFP-module set SIGDET polarity to low */
375 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
376 ctrl |= PHY_M_FIB_SIGD_POL;
377 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
380 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
388 if (sky2->autoneg == AUTONEG_ENABLE) {
389 if (sky2_is_copper(hw)) {
390 if (sky2->advertising & ADVERTISED_1000baseT_Full)
391 ct1000 |= PHY_M_1000C_AFD;
392 if (sky2->advertising & ADVERTISED_1000baseT_Half)
393 ct1000 |= PHY_M_1000C_AHD;
394 if (sky2->advertising & ADVERTISED_100baseT_Full)
395 adv |= PHY_M_AN_100_FD;
396 if (sky2->advertising & ADVERTISED_100baseT_Half)
397 adv |= PHY_M_AN_100_HD;
398 if (sky2->advertising & ADVERTISED_10baseT_Full)
399 adv |= PHY_M_AN_10_FD;
400 if (sky2->advertising & ADVERTISED_10baseT_Half)
401 adv |= PHY_M_AN_10_HD;
403 adv |= copper_fc_adv[sky2->flow_mode];
404 } else { /* special defines for FIBER (88E1040S only) */
405 if (sky2->advertising & ADVERTISED_1000baseT_Full)
406 adv |= PHY_M_AN_1000X_AFD;
407 if (sky2->advertising & ADVERTISED_1000baseT_Half)
408 adv |= PHY_M_AN_1000X_AHD;
410 adv |= fiber_fc_adv[sky2->flow_mode];
413 /* Restart Auto-negotiation */
414 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
416 /* forced speed/duplex settings */
417 ct1000 = PHY_M_1000C_MSE;
419 /* Disable auto update for duplex flow control and speed */
420 reg |= GM_GPCR_AU_ALL_DIS;
422 switch (sky2->speed) {
424 ctrl |= PHY_CT_SP1000;
425 reg |= GM_GPCR_SPEED_1000;
428 ctrl |= PHY_CT_SP100;
429 reg |= GM_GPCR_SPEED_100;
433 if (sky2->duplex == DUPLEX_FULL) {
434 reg |= GM_GPCR_DUP_FULL;
435 ctrl |= PHY_CT_DUP_MD;
436 } else if (sky2->speed < SPEED_1000)
437 sky2->flow_mode = FC_NONE;
440 reg |= gm_fc_disable[sky2->flow_mode];
442 /* Forward pause packets to GMAC? */
443 if (sky2->flow_mode & FC_RX)
444 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
446 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
449 gma_write16(hw, port, GM_GP_CTRL, reg);
451 if (hw->chip_id != CHIP_ID_YUKON_FE)
452 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
454 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
455 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
457 /* Setup Phy LED's */
458 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
461 switch (hw->chip_id) {
462 case CHIP_ID_YUKON_FE:
463 /* on 88E3082 these bits are at 11..9 (shifted left) */
464 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
466 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
468 /* delete ACT LED control bits */
469 ctrl &= ~PHY_M_FELP_LED1_MSK;
470 /* change ACT LED control to blink mode */
471 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
472 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
475 case CHIP_ID_YUKON_XL:
476 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
478 /* select page 3 to access LED control register */
479 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
481 /* set LED Function Control register */
482 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
483 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
484 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
485 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
486 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
488 /* set Polarity Control register */
489 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
490 (PHY_M_POLC_LS1_P_MIX(4) |
491 PHY_M_POLC_IS0_P_MIX(4) |
492 PHY_M_POLC_LOS_CTRL(2) |
493 PHY_M_POLC_INIT_CTRL(2) |
494 PHY_M_POLC_STA1_CTRL(2) |
495 PHY_M_POLC_STA0_CTRL(2)));
497 /* restore page register */
498 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
500 case CHIP_ID_YUKON_EC_U:
501 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
503 /* select page 3 to access LED control register */
504 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
506 /* set LED Function Control register */
507 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
508 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
509 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
510 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
511 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
513 /* set Blink Rate in LED Timer Control Register */
514 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
515 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
516 /* restore page register */
517 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
521 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
522 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
523 /* turn off the Rx LED (LED_RX) */
524 ledover &= ~PHY_M_LED_MO_RX;
527 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev == CHIP_REV_YU_EC_A1) {
528 /* apply fixes in PHY AFE */
529 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
530 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
532 /* increase differential signal amplitude in 10BASE-T */
533 gm_phy_write(hw, port, 0x18, 0xaa99);
534 gm_phy_write(hw, port, 0x17, 0x2011);
536 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
537 gm_phy_write(hw, port, 0x18, 0xa204);
538 gm_phy_write(hw, port, 0x17, 0x2002);
540 /* set page register to 0 */
541 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
543 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
545 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
546 /* turn on 100 Mbps LED (LED_LINK100) */
547 ledover |= PHY_M_LED_MO_100;
551 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
555 /* Enable phy interrupt on auto-negotiation complete (or link up) */
556 if (sky2->autoneg == AUTONEG_ENABLE)
557 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
559 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
562 static void sky2_phy_power(struct sky2_hw *hw, unsigned port, int onoff)
565 static const u32 phy_power[]
566 = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
568 /* looks like this XL is back asswards .. */
569 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
572 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
575 /* Turn off phy power saving */
576 reg1 &= ~phy_power[port];
578 reg1 |= phy_power[port];
580 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
581 sky2_pci_read32(hw, PCI_DEV_REG1);
585 /* Force a renegotiation */
586 static void sky2_phy_reinit(struct sky2_port *sky2)
588 spin_lock_bh(&sky2->phy_lock);
589 sky2_phy_init(sky2->hw, sky2->port);
590 spin_unlock_bh(&sky2->phy_lock);
593 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
595 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
598 const u8 *addr = hw->dev[port]->dev_addr;
600 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
601 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR|GPC_ENA_PAUSE);
603 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
605 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
606 /* WA DEV_472 -- looks like crossed wires on port 2 */
607 /* clear GMAC 1 Control reset */
608 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
610 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
611 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
612 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
613 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
614 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
617 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
619 /* Enable Transmit FIFO Underrun */
620 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
622 spin_lock_bh(&sky2->phy_lock);
623 sky2_phy_init(hw, port);
624 spin_unlock_bh(&sky2->phy_lock);
627 reg = gma_read16(hw, port, GM_PHY_ADDR);
628 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
630 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
631 gma_read16(hw, port, i);
632 gma_write16(hw, port, GM_PHY_ADDR, reg);
634 /* transmit control */
635 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
637 /* receive control reg: unicast + multicast + no FCS */
638 gma_write16(hw, port, GM_RX_CTRL,
639 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
641 /* transmit flow control */
642 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
644 /* transmit parameter */
645 gma_write16(hw, port, GM_TX_PARAM,
646 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
647 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
648 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
649 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
651 /* serial mode register */
652 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
653 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
655 if (hw->dev[port]->mtu > ETH_DATA_LEN)
656 reg |= GM_SMOD_JUMBO_ENA;
658 gma_write16(hw, port, GM_SERIAL_MODE, reg);
660 /* virtual address for data */
661 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
663 /* physical address: used for pause frames */
664 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
666 /* ignore counter overflows */
667 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
668 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
669 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
671 /* Configure Rx MAC FIFO */
672 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
673 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
674 GMF_OPER_ON | GMF_RX_F_FL_ON);
676 /* Flush Rx MAC FIFO on any flow control or error */
677 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
679 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
680 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF+1);
682 /* Configure Tx MAC FIFO */
683 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
684 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
686 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
687 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
688 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
689 if (hw->dev[port]->mtu > ETH_DATA_LEN) {
690 /* set Tx GMAC FIFO Almost Empty Threshold */
691 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR), 0x180);
692 /* Disable Store & Forward mode for TX */
693 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
699 /* Assign Ram Buffer allocation to queue */
700 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
704 /* convert from K bytes to qwords used for hw register */
707 end = start + space - 1;
709 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
710 sky2_write32(hw, RB_ADDR(q, RB_START), start);
711 sky2_write32(hw, RB_ADDR(q, RB_END), end);
712 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
713 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
715 if (q == Q_R1 || q == Q_R2) {
716 u32 tp = space - space/4;
718 /* On receive queue's set the thresholds
719 * give receiver priority when > 3/4 full
720 * send pause when down to 2K
722 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
723 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
726 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
727 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
729 /* Enable store & forward on Tx queue's because
730 * Tx FIFO is only 1K on Yukon
732 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
735 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
736 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
739 /* Setup Bus Memory Interface */
740 static void sky2_qset(struct sky2_hw *hw, u16 q)
742 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
743 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
744 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
745 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
748 /* Setup prefetch unit registers. This is the interface between
749 * hardware and driver list elements
751 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
754 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
755 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
756 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
757 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
758 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
759 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
761 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
764 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
766 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
768 sky2->tx_prod = RING_NEXT(sky2->tx_prod, TX_RING_SIZE);
773 static inline struct tx_ring_info *tx_le_re(struct sky2_port *sky2,
774 struct sky2_tx_le *le)
776 return sky2->tx_ring + (le - sky2->tx_le);
779 /* Update chip's next pointer */
780 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
782 q = Y2_QADDR(q, PREF_UNIT_PUT_IDX);
784 sky2_write16(hw, q, idx);
789 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
791 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
792 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
797 /* Return high part of DMA address (could be 32 or 64 bit) */
798 static inline u32 high32(dma_addr_t a)
800 return sizeof(a) > sizeof(u32) ? (a >> 16) >> 16 : 0;
803 /* Build description to hardware for one receive segment */
804 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
805 dma_addr_t map, unsigned len)
807 struct sky2_rx_le *le;
808 u32 hi = high32(map);
810 if (sky2->rx_addr64 != hi) {
811 le = sky2_next_rx(sky2);
812 le->addr = cpu_to_le32(hi);
813 le->opcode = OP_ADDR64 | HW_OWNER;
814 sky2->rx_addr64 = high32(map + len);
817 le = sky2_next_rx(sky2);
818 le->addr = cpu_to_le32((u32) map);
819 le->length = cpu_to_le16(len);
820 le->opcode = op | HW_OWNER;
823 /* Build description to hardware for one possibly fragmented skb */
824 static void sky2_rx_submit(struct sky2_port *sky2,
825 const struct rx_ring_info *re)
829 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
831 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
832 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
836 static void sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
839 struct sk_buff *skb = re->skb;
842 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
843 pci_unmap_len_set(re, data_size, size);
845 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
846 re->frag_addr[i] = pci_map_page(pdev,
847 skb_shinfo(skb)->frags[i].page,
848 skb_shinfo(skb)->frags[i].page_offset,
849 skb_shinfo(skb)->frags[i].size,
853 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
855 struct sk_buff *skb = re->skb;
858 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
861 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
862 pci_unmap_page(pdev, re->frag_addr[i],
863 skb_shinfo(skb)->frags[i].size,
867 /* Tell chip where to start receive checksum.
868 * Actually has two checksums, but set both same to avoid possible byte
871 static void rx_set_checksum(struct sky2_port *sky2)
873 struct sky2_rx_le *le;
875 le = sky2_next_rx(sky2);
876 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
878 le->opcode = OP_TCPSTART | HW_OWNER;
880 sky2_write32(sky2->hw,
881 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
882 sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
887 * The RX Stop command will not work for Yukon-2 if the BMU does not
888 * reach the end of packet and since we can't make sure that we have
889 * incoming data, we must reset the BMU while it is not doing a DMA
890 * transfer. Since it is possible that the RX path is still active,
891 * the RX RAM buffer will be stopped first, so any possible incoming
892 * data will not trigger a DMA. After the RAM buffer is stopped, the
893 * BMU is polled until any DMA in progress is ended and only then it
896 static void sky2_rx_stop(struct sky2_port *sky2)
898 struct sky2_hw *hw = sky2->hw;
899 unsigned rxq = rxqaddr[sky2->port];
902 /* disable the RAM Buffer receive queue */
903 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
905 for (i = 0; i < 0xffff; i++)
906 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
907 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
910 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
913 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
915 /* reset the Rx prefetch unit */
916 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
919 /* Clean out receive buffer area, assumes receiver hardware stopped */
920 static void sky2_rx_clean(struct sky2_port *sky2)
924 memset(sky2->rx_le, 0, RX_LE_BYTES);
925 for (i = 0; i < sky2->rx_pending; i++) {
926 struct rx_ring_info *re = sky2->rx_ring + i;
929 sky2_rx_unmap_skb(sky2->hw->pdev, re);
936 /* Basic MII support */
937 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
939 struct mii_ioctl_data *data = if_mii(ifr);
940 struct sky2_port *sky2 = netdev_priv(dev);
941 struct sky2_hw *hw = sky2->hw;
942 int err = -EOPNOTSUPP;
944 if (!netif_running(dev))
945 return -ENODEV; /* Phy still in reset */
949 data->phy_id = PHY_ADDR_MARV;
955 spin_lock_bh(&sky2->phy_lock);
956 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
957 spin_unlock_bh(&sky2->phy_lock);
964 if (!capable(CAP_NET_ADMIN))
967 spin_lock_bh(&sky2->phy_lock);
968 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
970 spin_unlock_bh(&sky2->phy_lock);
976 #ifdef SKY2_VLAN_TAG_USED
977 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
979 struct sky2_port *sky2 = netdev_priv(dev);
980 struct sky2_hw *hw = sky2->hw;
981 u16 port = sky2->port;
983 netif_tx_lock_bh(dev);
985 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_ON);
986 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_ON);
989 netif_tx_unlock_bh(dev);
992 static void sky2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
994 struct sky2_port *sky2 = netdev_priv(dev);
995 struct sky2_hw *hw = sky2->hw;
996 u16 port = sky2->port;
998 netif_tx_lock_bh(dev);
1000 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_OFF);
1001 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_OFF);
1003 sky2->vlgrp->vlan_devices[vid] = NULL;
1005 netif_tx_unlock_bh(dev);
1010 * Allocate an skb for receiving. If the MTU is large enough
1011 * make the skb non-linear with a fragment list of pages.
1013 * It appears the hardware has a bug in the FIFO logic that
1014 * cause it to hang if the FIFO gets overrun and the receive buffer
1015 * is not 64 byte aligned. The buffer returned from netdev_alloc_skb is
1016 * aligned except if slab debugging is enabled.
1018 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2)
1020 struct sk_buff *skb;
1024 skb = netdev_alloc_skb(sky2->netdev, sky2->rx_data_size + RX_SKB_ALIGN);
1028 p = (unsigned long) skb->data;
1029 skb_reserve(skb, ALIGN(p, RX_SKB_ALIGN) - p);
1031 for (i = 0; i < sky2->rx_nfrags; i++) {
1032 struct page *page = alloc_page(GFP_ATOMIC);
1036 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1047 * Allocate and setup receiver buffer pool.
1048 * Normal case this ends up creating one list element for skb
1049 * in the receive ring. Worst case if using large MTU and each
1050 * allocation falls on a different 64 bit region, that results
1051 * in 6 list elements per ring entry.
1052 * One element is used for checksum enable/disable, and one
1053 * extra to avoid wrap.
1055 static int sky2_rx_start(struct sky2_port *sky2)
1057 struct sky2_hw *hw = sky2->hw;
1058 struct rx_ring_info *re;
1059 unsigned rxq = rxqaddr[sky2->port];
1060 unsigned i, size, space, thresh;
1062 sky2->rx_put = sky2->rx_next = 0;
1065 /* On PCI express lowering the watermark gives better performance */
1066 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
1067 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1069 /* These chips have no ram buffer?
1070 * MAC Rx RAM Read is controlled by hardware */
1071 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1072 (hw->chip_rev == CHIP_REV_YU_EC_U_A1
1073 || hw->chip_rev == CHIP_REV_YU_EC_U_B0))
1074 sky2_write32(hw, Q_ADDR(rxq, Q_F), F_M_RX_RAM_DIS);
1076 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1078 rx_set_checksum(sky2);
1080 /* Space needed for frame data + headers rounded up */
1081 size = ALIGN(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8)
1084 /* Stopping point for hardware truncation */
1085 thresh = (size - 8) / sizeof(u32);
1087 /* Account for overhead of skb - to avoid order > 0 allocation */
1088 space = SKB_DATA_ALIGN(size) + NET_SKB_PAD
1089 + sizeof(struct skb_shared_info);
1091 sky2->rx_nfrags = space >> PAGE_SHIFT;
1092 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1094 if (sky2->rx_nfrags != 0) {
1095 /* Compute residue after pages */
1096 space = sky2->rx_nfrags << PAGE_SHIFT;
1103 /* Optimize to handle small packets and headers */
1104 if (size < copybreak)
1106 if (size < ETH_HLEN)
1109 sky2->rx_data_size = size;
1112 for (i = 0; i < sky2->rx_pending; i++) {
1113 re = sky2->rx_ring + i;
1115 re->skb = sky2_rx_alloc(sky2);
1119 sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size);
1120 sky2_rx_submit(sky2, re);
1124 * The receiver hangs if it receives frames larger than the
1125 * packet buffer. As a workaround, truncate oversize frames, but
1126 * the register is limited to 9 bits, so if you do frames > 2052
1127 * you better get the MTU right!
1130 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1132 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1133 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1136 /* Tell chip about available buffers */
1137 sky2_write16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX), sky2->rx_put);
1140 sky2_rx_clean(sky2);
1144 /* Bring up network interface. */
1145 static int sky2_up(struct net_device *dev)
1147 struct sky2_port *sky2 = netdev_priv(dev);
1148 struct sky2_hw *hw = sky2->hw;
1149 unsigned port = sky2->port;
1151 int cap, err = -ENOMEM;
1152 struct net_device *otherdev = hw->dev[sky2->port^1];
1155 * On dual port PCI-X card, there is an problem where status
1156 * can be received out of order due to split transactions
1158 if (otherdev && netif_running(otherdev) &&
1159 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1160 struct sky2_port *osky2 = netdev_priv(otherdev);
1163 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1164 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1165 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1171 if (netif_msg_ifup(sky2))
1172 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
1174 /* must be power of 2 */
1175 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1177 sizeof(struct sky2_tx_le),
1182 sky2->tx_ring = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info),
1186 sky2->tx_prod = sky2->tx_cons = 0;
1188 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1192 memset(sky2->rx_le, 0, RX_LE_BYTES);
1194 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1199 sky2_phy_power(hw, port, 1);
1201 sky2_mac_init(hw, port);
1203 /* Register is number of 4K blocks on internal RAM buffer. */
1204 ramsize = sky2_read8(hw, B2_E_0) * 4;
1205 printk(KERN_INFO PFX "%s: ram buffer %dK\n", dev->name, ramsize);
1211 rxspace = ramsize / 2;
1213 rxspace = 8 + (2*(ramsize - 16))/3;
1215 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1216 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1218 /* Make sure SyncQ is disabled */
1219 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1223 sky2_qset(hw, txqaddr[port]);
1225 /* Set almost empty threshold */
1226 if (hw->chip_id == CHIP_ID_YUKON_EC_U
1227 && hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1228 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), 0x1a0);
1230 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1233 err = sky2_rx_start(sky2);
1237 /* Enable interrupts from phy/mac for port */
1238 imask = sky2_read32(hw, B0_IMSK);
1239 imask |= portirq_msk[port];
1240 sky2_write32(hw, B0_IMSK, imask);
1246 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1247 sky2->rx_le, sky2->rx_le_map);
1251 pci_free_consistent(hw->pdev,
1252 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1253 sky2->tx_le, sky2->tx_le_map);
1256 kfree(sky2->tx_ring);
1257 kfree(sky2->rx_ring);
1259 sky2->tx_ring = NULL;
1260 sky2->rx_ring = NULL;
1264 /* Modular subtraction in ring */
1265 static inline int tx_dist(unsigned tail, unsigned head)
1267 return (head - tail) & (TX_RING_SIZE - 1);
1270 /* Number of list elements available for next tx */
1271 static inline int tx_avail(const struct sky2_port *sky2)
1273 return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
1276 /* Estimate of number of transmit list elements required */
1277 static unsigned tx_le_req(const struct sk_buff *skb)
1281 count = sizeof(dma_addr_t) / sizeof(u32);
1282 count += skb_shinfo(skb)->nr_frags * count;
1284 if (skb_is_gso(skb))
1287 if (skb->ip_summed == CHECKSUM_PARTIAL)
1294 * Put one packet in ring for transmit.
1295 * A single packet can generate multiple list elements, and
1296 * the number of ring elements will probably be less than the number
1297 * of list elements used.
1299 static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1301 struct sky2_port *sky2 = netdev_priv(dev);
1302 struct sky2_hw *hw = sky2->hw;
1303 struct sky2_tx_le *le = NULL;
1304 struct tx_ring_info *re;
1311 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1312 return NETDEV_TX_BUSY;
1314 if (unlikely(netif_msg_tx_queued(sky2)))
1315 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1316 dev->name, sky2->tx_prod, skb->len);
1318 len = skb_headlen(skb);
1319 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1320 addr64 = high32(mapping);
1322 /* Send high bits if changed or crosses boundary */
1323 if (addr64 != sky2->tx_addr64 || high32(mapping + len) != sky2->tx_addr64) {
1324 le = get_tx_le(sky2);
1325 le->addr = cpu_to_le32(addr64);
1326 le->opcode = OP_ADDR64 | HW_OWNER;
1327 sky2->tx_addr64 = high32(mapping + len);
1330 /* Check for TCP Segmentation Offload */
1331 mss = skb_shinfo(skb)->gso_size;
1333 mss += ((skb->h.th->doff - 5) * 4); /* TCP options */
1334 mss += (skb->nh.iph->ihl * 4) + sizeof(struct tcphdr);
1337 if (mss != sky2->tx_last_mss) {
1338 le = get_tx_le(sky2);
1339 le->addr = cpu_to_le32(mss);
1340 le->opcode = OP_LRGLEN | HW_OWNER;
1341 sky2->tx_last_mss = mss;
1346 #ifdef SKY2_VLAN_TAG_USED
1347 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1348 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1350 le = get_tx_le(sky2);
1352 le->opcode = OP_VLAN|HW_OWNER;
1354 le->opcode |= OP_VLAN;
1355 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1360 /* Handle TCP checksum offload */
1361 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1362 unsigned offset = skb->h.raw - skb->data;
1365 tcpsum = offset << 16; /* sum start */
1366 tcpsum |= offset + skb->csum_offset; /* sum write */
1368 ctrl = CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1369 if (skb->nh.iph->protocol == IPPROTO_UDP)
1372 if (tcpsum != sky2->tx_tcpsum) {
1373 sky2->tx_tcpsum = tcpsum;
1375 le = get_tx_le(sky2);
1376 le->addr = cpu_to_le32(tcpsum);
1377 le->length = 0; /* initial checksum value */
1378 le->ctrl = 1; /* one packet */
1379 le->opcode = OP_TCPLISW | HW_OWNER;
1383 le = get_tx_le(sky2);
1384 le->addr = cpu_to_le32((u32) mapping);
1385 le->length = cpu_to_le16(len);
1387 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1389 re = tx_le_re(sky2, le);
1391 pci_unmap_addr_set(re, mapaddr, mapping);
1392 pci_unmap_len_set(re, maplen, len);
1394 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1395 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1397 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1398 frag->size, PCI_DMA_TODEVICE);
1399 addr64 = high32(mapping);
1400 if (addr64 != sky2->tx_addr64) {
1401 le = get_tx_le(sky2);
1402 le->addr = cpu_to_le32(addr64);
1404 le->opcode = OP_ADDR64 | HW_OWNER;
1405 sky2->tx_addr64 = addr64;
1408 le = get_tx_le(sky2);
1409 le->addr = cpu_to_le32((u32) mapping);
1410 le->length = cpu_to_le16(frag->size);
1412 le->opcode = OP_BUFFER | HW_OWNER;
1414 re = tx_le_re(sky2, le);
1416 pci_unmap_addr_set(re, mapaddr, mapping);
1417 pci_unmap_len_set(re, maplen, frag->size);
1422 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1423 netif_stop_queue(dev);
1425 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1427 dev->trans_start = jiffies;
1428 return NETDEV_TX_OK;
1432 * Free ring elements from starting at tx_cons until "done"
1434 * NB: the hardware will tell us about partial completion of multi-part
1435 * buffers so make sure not to free skb to early.
1437 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1439 struct net_device *dev = sky2->netdev;
1440 struct pci_dev *pdev = sky2->hw->pdev;
1443 BUG_ON(done >= TX_RING_SIZE);
1445 for (idx = sky2->tx_cons; idx != done;
1446 idx = RING_NEXT(idx, TX_RING_SIZE)) {
1447 struct sky2_tx_le *le = sky2->tx_le + idx;
1448 struct tx_ring_info *re = sky2->tx_ring + idx;
1450 switch(le->opcode & ~HW_OWNER) {
1453 pci_unmap_single(pdev,
1454 pci_unmap_addr(re, mapaddr),
1455 pci_unmap_len(re, maplen),
1459 pci_unmap_page(pdev, pci_unmap_addr(re, mapaddr),
1460 pci_unmap_len(re, maplen),
1465 if (le->ctrl & EOP) {
1466 if (unlikely(netif_msg_tx_done(sky2)))
1467 printk(KERN_DEBUG "%s: tx done %u\n",
1469 dev_kfree_skb_any(re->skb);
1472 le->opcode = 0; /* paranoia */
1475 sky2->tx_cons = idx;
1476 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
1477 netif_wake_queue(dev);
1480 /* Cleanup all untransmitted buffers, assume transmitter not running */
1481 static void sky2_tx_clean(struct net_device *dev)
1483 struct sky2_port *sky2 = netdev_priv(dev);
1485 netif_tx_lock_bh(dev);
1486 sky2_tx_complete(sky2, sky2->tx_prod);
1487 netif_tx_unlock_bh(dev);
1490 /* Network shutdown */
1491 static int sky2_down(struct net_device *dev)
1493 struct sky2_port *sky2 = netdev_priv(dev);
1494 struct sky2_hw *hw = sky2->hw;
1495 unsigned port = sky2->port;
1499 /* Never really got started! */
1503 if (netif_msg_ifdown(sky2))
1504 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1506 /* Stop more packets from being queued */
1507 netif_stop_queue(dev);
1509 /* Disable port IRQ */
1510 imask = sky2_read32(hw, B0_IMSK);
1511 imask &= ~portirq_msk[port];
1512 sky2_write32(hw, B0_IMSK, imask);
1514 sky2_gmac_reset(hw, port);
1516 /* Stop transmitter */
1517 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1518 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1520 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1521 RB_RST_SET | RB_DIS_OP_MD);
1523 /* WA for dev. #4.209 */
1524 if (hw->chip_id == CHIP_ID_YUKON_EC_U
1525 && (hw->chip_rev == CHIP_REV_YU_EC_U_A1 || hw->chip_rev == CHIP_REV_YU_EC_U_B0))
1526 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1527 sky2->speed != SPEED_1000 ?
1528 TX_STFW_ENA : TX_STFW_DIS);
1530 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1531 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1532 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1534 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1536 /* Workaround shared GMAC reset */
1537 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1538 && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1539 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1541 /* Disable Force Sync bit and Enable Alloc bit */
1542 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1543 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1545 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1546 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1547 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1549 /* Reset the PCI FIFO of the async Tx queue */
1550 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1551 BMU_RST_SET | BMU_FIFO_RST);
1553 /* Reset the Tx prefetch units */
1554 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1557 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1561 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1562 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1564 sky2_phy_power(hw, port, 0);
1566 /* turn off LED's */
1567 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1569 synchronize_irq(hw->pdev->irq);
1572 sky2_rx_clean(sky2);
1574 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1575 sky2->rx_le, sky2->rx_le_map);
1576 kfree(sky2->rx_ring);
1578 pci_free_consistent(hw->pdev,
1579 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1580 sky2->tx_le, sky2->tx_le_map);
1581 kfree(sky2->tx_ring);
1586 sky2->rx_ring = NULL;
1587 sky2->tx_ring = NULL;
1592 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1594 if (!sky2_is_copper(hw))
1597 if (hw->chip_id == CHIP_ID_YUKON_FE)
1598 return (aux & PHY_M_PS_SPEED_100) ? SPEED_100 : SPEED_10;
1600 switch (aux & PHY_M_PS_SPEED_MSK) {
1601 case PHY_M_PS_SPEED_1000:
1603 case PHY_M_PS_SPEED_100:
1610 static void sky2_link_up(struct sky2_port *sky2)
1612 struct sky2_hw *hw = sky2->hw;
1613 unsigned port = sky2->port;
1615 static const char *fc_name[] = {
1623 reg = gma_read16(hw, port, GM_GP_CTRL);
1624 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1625 gma_write16(hw, port, GM_GP_CTRL, reg);
1627 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1629 netif_carrier_on(sky2->netdev);
1630 netif_wake_queue(sky2->netdev);
1632 /* Turn on link LED */
1633 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1634 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1636 if (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U) {
1637 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
1638 u16 led = PHY_M_LEDC_LOS_CTRL(1); /* link active */
1640 switch(sky2->speed) {
1642 led |= PHY_M_LEDC_INIT_CTRL(7);
1646 led |= PHY_M_LEDC_STA1_CTRL(7);
1650 led |= PHY_M_LEDC_STA0_CTRL(7);
1654 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
1655 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, led);
1656 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
1659 if (netif_msg_link(sky2))
1660 printk(KERN_INFO PFX
1661 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1662 sky2->netdev->name, sky2->speed,
1663 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1664 fc_name[sky2->flow_status]);
1667 static void sky2_link_down(struct sky2_port *sky2)
1669 struct sky2_hw *hw = sky2->hw;
1670 unsigned port = sky2->port;
1673 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1675 reg = gma_read16(hw, port, GM_GP_CTRL);
1676 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1677 gma_write16(hw, port, GM_GP_CTRL, reg);
1679 if (sky2->flow_status == FC_RX) {
1680 /* restore Asymmetric Pause bit */
1681 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV,
1682 gm_phy_read(hw, port, PHY_MARV_AUNE_ADV)
1686 netif_carrier_off(sky2->netdev);
1687 netif_stop_queue(sky2->netdev);
1689 /* Turn on link LED */
1690 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1692 if (netif_msg_link(sky2))
1693 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
1695 sky2_phy_init(hw, port);
1698 static enum flow_control sky2_flow(int rx, int tx)
1701 return tx ? FC_BOTH : FC_RX;
1703 return tx ? FC_TX : FC_NONE;
1706 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
1708 struct sky2_hw *hw = sky2->hw;
1709 unsigned port = sky2->port;
1712 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
1714 if (lpa & PHY_M_AN_RF) {
1715 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
1719 if (!(aux & PHY_M_PS_SPDUP_RES)) {
1720 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
1721 sky2->netdev->name);
1725 sky2->speed = sky2_phy_speed(hw, aux);
1726 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1728 /* Pause bits are offset (9..8) */
1729 if (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)
1732 sky2->flow_status = sky2_flow(aux & PHY_M_PS_RX_P_EN,
1733 aux & PHY_M_PS_TX_P_EN);
1735 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000
1736 && hw->chip_id != CHIP_ID_YUKON_EC_U)
1737 sky2->flow_status = FC_NONE;
1739 if (aux & PHY_M_PS_RX_P_EN)
1740 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
1742 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1747 /* Interrupt from PHY */
1748 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
1750 struct net_device *dev = hw->dev[port];
1751 struct sky2_port *sky2 = netdev_priv(dev);
1752 u16 istatus, phystat;
1754 if (!netif_running(dev))
1757 spin_lock(&sky2->phy_lock);
1758 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
1759 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
1761 if (netif_msg_intr(sky2))
1762 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
1763 sky2->netdev->name, istatus, phystat);
1765 if (sky2->autoneg == AUTONEG_ENABLE && (istatus & PHY_M_IS_AN_COMPL)) {
1766 if (sky2_autoneg_done(sky2, phystat) == 0)
1771 if (istatus & PHY_M_IS_LSP_CHANGE)
1772 sky2->speed = sky2_phy_speed(hw, phystat);
1774 if (istatus & PHY_M_IS_DUP_CHANGE)
1776 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1778 if (istatus & PHY_M_IS_LST_CHANGE) {
1779 if (phystat & PHY_M_PS_LINK_UP)
1782 sky2_link_down(sky2);
1785 spin_unlock(&sky2->phy_lock);
1789 /* Transmit timeout is only called if we are running, carries is up
1790 * and tx queue is full (stopped).
1792 static void sky2_tx_timeout(struct net_device *dev)
1794 struct sky2_port *sky2 = netdev_priv(dev);
1795 struct sky2_hw *hw = sky2->hw;
1796 unsigned txq = txqaddr[sky2->port];
1799 if (netif_msg_timer(sky2))
1800 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
1802 report = sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX);
1803 done = sky2_read16(hw, Q_ADDR(txq, Q_DONE));
1805 printk(KERN_DEBUG PFX "%s: transmit ring %u .. %u report=%u done=%u\n",
1807 sky2->tx_cons, sky2->tx_prod, report, done);
1809 if (report != done) {
1810 printk(KERN_INFO PFX "status burst pending (irq moderation?)\n");
1812 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
1813 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
1814 } else if (report != sky2->tx_cons) {
1815 printk(KERN_INFO PFX "status report lost?\n");
1817 netif_tx_lock_bh(dev);
1818 sky2_tx_complete(sky2, report);
1819 netif_tx_unlock_bh(dev);
1821 printk(KERN_INFO PFX "hardware hung? flushing\n");
1823 sky2_write32(hw, Q_ADDR(txq, Q_CSR), BMU_STOP);
1824 sky2_write32(hw, Y2_QADDR(txq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1829 sky2_prefetch_init(hw, txq, sky2->tx_le_map, TX_RING_SIZE - 1);
1833 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
1835 struct sky2_port *sky2 = netdev_priv(dev);
1836 struct sky2_hw *hw = sky2->hw;
1841 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
1844 if (hw->chip_id == CHIP_ID_YUKON_EC_U && new_mtu > ETH_DATA_LEN)
1847 if (!netif_running(dev)) {
1852 imask = sky2_read32(hw, B0_IMSK);
1853 sky2_write32(hw, B0_IMSK, 0);
1855 dev->trans_start = jiffies; /* prevent tx timeout */
1856 netif_stop_queue(dev);
1857 netif_poll_disable(hw->dev[0]);
1859 synchronize_irq(hw->pdev->irq);
1861 ctl = gma_read16(hw, sky2->port, GM_GP_CTRL);
1862 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
1864 sky2_rx_clean(sky2);
1868 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
1869 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
1871 if (dev->mtu > ETH_DATA_LEN)
1872 mode |= GM_SMOD_JUMBO_ENA;
1874 gma_write16(hw, sky2->port, GM_SERIAL_MODE, mode);
1876 sky2_write8(hw, RB_ADDR(rxqaddr[sky2->port], RB_CTRL), RB_ENA_OP_MD);
1878 err = sky2_rx_start(sky2);
1879 sky2_write32(hw, B0_IMSK, imask);
1884 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl);
1886 netif_poll_enable(hw->dev[0]);
1887 netif_wake_queue(dev);
1893 /* For small just reuse existing skb for next receive */
1894 static struct sk_buff *receive_copy(struct sky2_port *sky2,
1895 const struct rx_ring_info *re,
1898 struct sk_buff *skb;
1900 skb = netdev_alloc_skb(sky2->netdev, length + 2);
1902 skb_reserve(skb, 2);
1903 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
1904 length, PCI_DMA_FROMDEVICE);
1905 memcpy(skb->data, re->skb->data, length);
1906 skb->ip_summed = re->skb->ip_summed;
1907 skb->csum = re->skb->csum;
1908 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
1909 length, PCI_DMA_FROMDEVICE);
1910 re->skb->ip_summed = CHECKSUM_NONE;
1911 skb_put(skb, length);
1916 /* Adjust length of skb with fragments to match received data */
1917 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
1918 unsigned int length)
1923 /* put header into skb */
1924 size = min(length, hdr_space);
1929 num_frags = skb_shinfo(skb)->nr_frags;
1930 for (i = 0; i < num_frags; i++) {
1931 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1934 /* don't need this page */
1935 __free_page(frag->page);
1936 --skb_shinfo(skb)->nr_frags;
1938 size = min(length, (unsigned) PAGE_SIZE);
1941 skb->data_len += size;
1942 skb->truesize += size;
1949 /* Normal packet - take skb from ring element and put in a new one */
1950 static struct sk_buff *receive_new(struct sky2_port *sky2,
1951 struct rx_ring_info *re,
1952 unsigned int length)
1954 struct sk_buff *skb, *nskb;
1955 unsigned hdr_space = sky2->rx_data_size;
1957 pr_debug(PFX "receive new length=%d\n", length);
1959 /* Don't be tricky about reusing pages (yet) */
1960 nskb = sky2_rx_alloc(sky2);
1961 if (unlikely(!nskb))
1965 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1967 prefetch(skb->data);
1969 sky2_rx_map_skb(sky2->hw->pdev, re, hdr_space);
1971 if (skb_shinfo(skb)->nr_frags)
1972 skb_put_frags(skb, hdr_space, length);
1974 skb_put(skb, length);
1979 * Receive one packet.
1980 * For larger packets, get new buffer.
1982 static struct sk_buff *sky2_receive(struct net_device *dev,
1983 u16 length, u32 status)
1985 struct sky2_port *sky2 = netdev_priv(dev);
1986 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
1987 struct sk_buff *skb = NULL;
1989 if (unlikely(netif_msg_rx_status(sky2)))
1990 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
1991 dev->name, sky2->rx_next, status, length);
1993 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
1994 prefetch(sky2->rx_ring + sky2->rx_next);
1996 if (status & GMR_FS_ANY_ERR)
1999 if (!(status & GMR_FS_RX_OK))
2002 if (length > dev->mtu + ETH_HLEN)
2005 if (length < copybreak)
2006 skb = receive_copy(sky2, re, length);
2008 skb = receive_new(sky2, re, length);
2010 sky2_rx_submit(sky2, re);
2015 ++sky2->net_stats.rx_over_errors;
2019 ++sky2->net_stats.rx_errors;
2020 if (status & GMR_FS_RX_FF_OV) {
2021 sky2->net_stats.rx_fifo_errors++;
2025 if (netif_msg_rx_err(sky2) && net_ratelimit())
2026 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
2027 dev->name, status, length);
2029 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
2030 sky2->net_stats.rx_length_errors++;
2031 if (status & GMR_FS_FRAGMENT)
2032 sky2->net_stats.rx_frame_errors++;
2033 if (status & GMR_FS_CRC_ERR)
2034 sky2->net_stats.rx_crc_errors++;
2039 /* Transmit complete */
2040 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2042 struct sky2_port *sky2 = netdev_priv(dev);
2044 if (netif_running(dev)) {
2046 sky2_tx_complete(sky2, last);
2047 netif_tx_unlock(dev);
2051 /* Process status response ring */
2052 static int sky2_status_intr(struct sky2_hw *hw, int to_do)
2054 struct sky2_port *sky2;
2056 unsigned buf_write[2] = { 0, 0 };
2057 u16 hwidx = sky2_read16(hw, STAT_PUT_IDX);
2061 while (hw->st_idx != hwidx) {
2062 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2063 struct net_device *dev;
2064 struct sk_buff *skb;
2068 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
2070 BUG_ON(le->link >= 2);
2071 dev = hw->dev[le->link];
2073 sky2 = netdev_priv(dev);
2074 length = le16_to_cpu(le->length);
2075 status = le32_to_cpu(le->status);
2077 switch (le->opcode & ~HW_OWNER) {
2079 skb = sky2_receive(dev, length, status);
2083 skb->protocol = eth_type_trans(skb, dev);
2084 dev->last_rx = jiffies;
2086 #ifdef SKY2_VLAN_TAG_USED
2087 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
2088 vlan_hwaccel_receive_skb(skb,
2090 be16_to_cpu(sky2->rx_tag));
2093 netif_receive_skb(skb);
2095 /* Update receiver after 16 frames */
2096 if (++buf_write[le->link] == RX_BUF_WRITE) {
2098 sky2_put_idx(hw, rxqaddr[le->link], sky2->rx_put);
2099 buf_write[le->link] = 0;
2102 /* Stop after net poll weight */
2103 if (++work_done >= to_do)
2107 #ifdef SKY2_VLAN_TAG_USED
2109 sky2->rx_tag = length;
2113 sky2->rx_tag = length;
2117 skb = sky2->rx_ring[sky2->rx_next].skb;
2118 skb->ip_summed = CHECKSUM_COMPLETE;
2119 skb->csum = status & 0xffff;
2123 /* TX index reports status for both ports */
2124 BUILD_BUG_ON(TX_RING_SIZE > 0x1000);
2125 sky2_tx_done(hw->dev[0], status & 0xfff);
2127 sky2_tx_done(hw->dev[1],
2128 ((status >> 24) & 0xff)
2129 | (u16)(length & 0xf) << 8);
2133 if (net_ratelimit())
2134 printk(KERN_WARNING PFX
2135 "unknown status opcode 0x%x\n", le->opcode);
2140 /* Fully processed status ring so clear irq */
2141 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2145 sky2 = netdev_priv(hw->dev[0]);
2146 sky2_put_idx(hw, Q_R1, sky2->rx_put);
2150 sky2 = netdev_priv(hw->dev[1]);
2151 sky2_put_idx(hw, Q_R2, sky2->rx_put);
2157 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2159 struct net_device *dev = hw->dev[port];
2161 if (net_ratelimit())
2162 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
2165 if (status & Y2_IS_PAR_RD1) {
2166 if (net_ratelimit())
2167 printk(KERN_ERR PFX "%s: ram data read parity error\n",
2170 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2173 if (status & Y2_IS_PAR_WR1) {
2174 if (net_ratelimit())
2175 printk(KERN_ERR PFX "%s: ram data write parity error\n",
2178 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2181 if (status & Y2_IS_PAR_MAC1) {
2182 if (net_ratelimit())
2183 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
2184 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2187 if (status & Y2_IS_PAR_RX1) {
2188 if (net_ratelimit())
2189 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
2190 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2193 if (status & Y2_IS_TCP_TXA1) {
2194 if (net_ratelimit())
2195 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
2197 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2201 static void sky2_hw_intr(struct sky2_hw *hw)
2203 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2205 if (status & Y2_IS_TIST_OV)
2206 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2208 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2211 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2212 if (net_ratelimit())
2213 printk(KERN_ERR PFX "%s: pci hw error (0x%x)\n",
2214 pci_name(hw->pdev), pci_err);
2216 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2217 sky2_pci_write16(hw, PCI_STATUS,
2218 pci_err | PCI_STATUS_ERROR_BITS);
2219 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2222 if (status & Y2_IS_PCI_EXP) {
2223 /* PCI-Express uncorrectable Error occurred */
2226 pex_err = sky2_pci_read32(hw, PEX_UNC_ERR_STAT);
2228 if (net_ratelimit())
2229 printk(KERN_ERR PFX "%s: pci express error (0x%x)\n",
2230 pci_name(hw->pdev), pex_err);
2232 /* clear the interrupt */
2233 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2234 sky2_pci_write32(hw, PEX_UNC_ERR_STAT,
2236 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2238 if (pex_err & PEX_FATAL_ERRORS) {
2239 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2240 hwmsk &= ~Y2_IS_PCI_EXP;
2241 sky2_write32(hw, B0_HWE_IMSK, hwmsk);
2245 if (status & Y2_HWE_L1_MASK)
2246 sky2_hw_error(hw, 0, status);
2248 if (status & Y2_HWE_L1_MASK)
2249 sky2_hw_error(hw, 1, status);
2252 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2254 struct net_device *dev = hw->dev[port];
2255 struct sky2_port *sky2 = netdev_priv(dev);
2256 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2258 if (netif_msg_intr(sky2))
2259 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2262 if (status & GM_IS_RX_FF_OR) {
2263 ++sky2->net_stats.rx_fifo_errors;
2264 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2267 if (status & GM_IS_TX_FF_UR) {
2268 ++sky2->net_stats.tx_fifo_errors;
2269 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2273 /* This should never happen it is a fatal situation */
2274 static void sky2_descriptor_error(struct sky2_hw *hw, unsigned port,
2275 const char *rxtx, u32 mask)
2277 struct net_device *dev = hw->dev[port];
2278 struct sky2_port *sky2 = netdev_priv(dev);
2281 printk(KERN_ERR PFX "%s: %s descriptor error (hardware problem)\n",
2282 dev ? dev->name : "<not registered>", rxtx);
2284 imask = sky2_read32(hw, B0_IMSK);
2286 sky2_write32(hw, B0_IMSK, imask);
2289 spin_lock(&sky2->phy_lock);
2290 sky2_link_down(sky2);
2291 spin_unlock(&sky2->phy_lock);
2295 /* If idle then force a fake soft NAPI poll once a second
2296 * to work around cases where sharing an edge triggered interrupt.
2298 static inline void sky2_idle_start(struct sky2_hw *hw)
2300 if (idle_timeout > 0)
2301 mod_timer(&hw->idle_timer,
2302 jiffies + msecs_to_jiffies(idle_timeout));
2305 static void sky2_idle(unsigned long arg)
2307 struct sky2_hw *hw = (struct sky2_hw *) arg;
2308 struct net_device *dev = hw->dev[0];
2310 if (__netif_rx_schedule_prep(dev))
2311 __netif_rx_schedule(dev);
2313 mod_timer(&hw->idle_timer, jiffies + msecs_to_jiffies(idle_timeout));
2317 static int sky2_poll(struct net_device *dev0, int *budget)
2319 struct sky2_hw *hw = ((struct sky2_port *) netdev_priv(dev0))->hw;
2320 int work_limit = min(dev0->quota, *budget);
2322 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2324 if (status & Y2_IS_HW_ERR)
2327 if (status & Y2_IS_IRQ_PHY1)
2328 sky2_phy_intr(hw, 0);
2330 if (status & Y2_IS_IRQ_PHY2)
2331 sky2_phy_intr(hw, 1);
2333 if (status & Y2_IS_IRQ_MAC1)
2334 sky2_mac_intr(hw, 0);
2336 if (status & Y2_IS_IRQ_MAC2)
2337 sky2_mac_intr(hw, 1);
2339 if (status & Y2_IS_CHK_RX1)
2340 sky2_descriptor_error(hw, 0, "receive", Y2_IS_CHK_RX1);
2342 if (status & Y2_IS_CHK_RX2)
2343 sky2_descriptor_error(hw, 1, "receive", Y2_IS_CHK_RX2);
2345 if (status & Y2_IS_CHK_TXA1)
2346 sky2_descriptor_error(hw, 0, "transmit", Y2_IS_CHK_TXA1);
2348 if (status & Y2_IS_CHK_TXA2)
2349 sky2_descriptor_error(hw, 1, "transmit", Y2_IS_CHK_TXA2);
2351 work_done = sky2_status_intr(hw, work_limit);
2352 if (work_done < work_limit) {
2353 netif_rx_complete(dev0);
2355 sky2_read32(hw, B0_Y2_SP_LISR);
2358 *budget -= work_done;
2359 dev0->quota -= work_done;
2364 static irqreturn_t sky2_intr(int irq, void *dev_id)
2366 struct sky2_hw *hw = dev_id;
2367 struct net_device *dev0 = hw->dev[0];
2370 /* Reading this mask interrupts as side effect */
2371 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2372 if (status == 0 || status == ~0)
2375 prefetch(&hw->st_le[hw->st_idx]);
2376 if (likely(__netif_rx_schedule_prep(dev0)))
2377 __netif_rx_schedule(dev0);
2382 #ifdef CONFIG_NET_POLL_CONTROLLER
2383 static void sky2_netpoll(struct net_device *dev)
2385 struct sky2_port *sky2 = netdev_priv(dev);
2386 struct net_device *dev0 = sky2->hw->dev[0];
2388 if (netif_running(dev) && __netif_rx_schedule_prep(dev0))
2389 __netif_rx_schedule(dev0);
2393 /* Chip internal frequency for clock calculations */
2394 static inline u32 sky2_mhz(const struct sky2_hw *hw)
2396 switch (hw->chip_id) {
2397 case CHIP_ID_YUKON_EC:
2398 case CHIP_ID_YUKON_EC_U:
2399 return 125; /* 125 Mhz */
2400 case CHIP_ID_YUKON_FE:
2401 return 100; /* 100 Mhz */
2402 default: /* YUKON_XL */
2403 return 156; /* 156 Mhz */
2407 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2409 return sky2_mhz(hw) * us;
2412 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2414 return clk / sky2_mhz(hw);
2418 static int sky2_reset(struct sky2_hw *hw)
2424 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2426 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2427 if (hw->chip_id < CHIP_ID_YUKON_XL || hw->chip_id > CHIP_ID_YUKON_FE) {
2428 printk(KERN_ERR PFX "%s: unsupported chip type 0x%x\n",
2429 pci_name(hw->pdev), hw->chip_id);
2433 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2435 /* This rev is really old, and requires untested workarounds */
2436 if (hw->chip_id == CHIP_ID_YUKON_EC && hw->chip_rev == CHIP_REV_YU_EC_A1) {
2437 printk(KERN_ERR PFX "%s: unsupported revision Yukon-%s (0x%x) rev %d\n",
2438 pci_name(hw->pdev), yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
2439 hw->chip_id, hw->chip_rev);
2444 if (hw->chip_id <= CHIP_ID_YUKON_EC) {
2445 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2446 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2450 sky2_write8(hw, B0_CTST, CS_RST_SET);
2451 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2453 /* clear PCI errors, if any */
2454 status = sky2_pci_read16(hw, PCI_STATUS);
2456 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2457 sky2_pci_write16(hw, PCI_STATUS, status | PCI_STATUS_ERROR_BITS);
2460 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2462 /* clear any PEX errors */
2463 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
2464 sky2_pci_write32(hw, PEX_UNC_ERR_STAT, 0xffffffffUL);
2467 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
2469 t8 = sky2_read8(hw, B2_Y2_HW_RES);
2470 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
2471 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2475 sky2_set_power_state(hw, PCI_D0);
2477 for (i = 0; i < hw->ports; i++) {
2478 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2479 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2482 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2484 /* Clear I2C IRQ noise */
2485 sky2_write32(hw, B2_I2C_IRQ, 1);
2487 /* turn off hardware timer (unused) */
2488 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2489 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
2491 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
2493 /* Turn off descriptor polling */
2494 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
2496 /* Turn off receive timestamp */
2497 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
2498 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2500 /* enable the Tx Arbiters */
2501 for (i = 0; i < hw->ports; i++)
2502 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
2504 /* Initialize ram interface */
2505 for (i = 0; i < hw->ports; i++) {
2506 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
2508 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
2509 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
2510 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
2511 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
2512 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
2513 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
2514 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
2515 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
2516 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
2517 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
2518 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
2519 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
2522 sky2_write32(hw, B0_HWE_IMSK, Y2_HWE_ALL_MASK);
2524 for (i = 0; i < hw->ports; i++)
2525 sky2_gmac_reset(hw, i);
2527 memset(hw->st_le, 0, STATUS_LE_BYTES);
2530 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
2531 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
2533 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
2534 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
2536 /* Set the list last index */
2537 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
2539 sky2_write16(hw, STAT_TX_IDX_TH, 10);
2540 sky2_write8(hw, STAT_FIFO_WM, 16);
2542 /* set Status-FIFO ISR watermark */
2543 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
2544 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
2546 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
2548 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
2549 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
2550 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
2552 /* enable status unit */
2553 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
2555 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2556 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2557 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2562 static u32 sky2_supported_modes(const struct sky2_hw *hw)
2564 if (sky2_is_copper(hw)) {
2565 u32 modes = SUPPORTED_10baseT_Half
2566 | SUPPORTED_10baseT_Full
2567 | SUPPORTED_100baseT_Half
2568 | SUPPORTED_100baseT_Full
2569 | SUPPORTED_Autoneg | SUPPORTED_TP;
2571 if (hw->chip_id != CHIP_ID_YUKON_FE)
2572 modes |= SUPPORTED_1000baseT_Half
2573 | SUPPORTED_1000baseT_Full;
2576 return SUPPORTED_1000baseT_Half
2577 | SUPPORTED_1000baseT_Full
2582 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2584 struct sky2_port *sky2 = netdev_priv(dev);
2585 struct sky2_hw *hw = sky2->hw;
2587 ecmd->transceiver = XCVR_INTERNAL;
2588 ecmd->supported = sky2_supported_modes(hw);
2589 ecmd->phy_address = PHY_ADDR_MARV;
2590 if (sky2_is_copper(hw)) {
2591 ecmd->supported = SUPPORTED_10baseT_Half
2592 | SUPPORTED_10baseT_Full
2593 | SUPPORTED_100baseT_Half
2594 | SUPPORTED_100baseT_Full
2595 | SUPPORTED_1000baseT_Half
2596 | SUPPORTED_1000baseT_Full
2597 | SUPPORTED_Autoneg | SUPPORTED_TP;
2598 ecmd->port = PORT_TP;
2599 ecmd->speed = sky2->speed;
2601 ecmd->speed = SPEED_1000;
2602 ecmd->port = PORT_FIBRE;
2605 ecmd->advertising = sky2->advertising;
2606 ecmd->autoneg = sky2->autoneg;
2607 ecmd->duplex = sky2->duplex;
2611 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2613 struct sky2_port *sky2 = netdev_priv(dev);
2614 const struct sky2_hw *hw = sky2->hw;
2615 u32 supported = sky2_supported_modes(hw);
2617 if (ecmd->autoneg == AUTONEG_ENABLE) {
2618 ecmd->advertising = supported;
2624 switch (ecmd->speed) {
2626 if (ecmd->duplex == DUPLEX_FULL)
2627 setting = SUPPORTED_1000baseT_Full;
2628 else if (ecmd->duplex == DUPLEX_HALF)
2629 setting = SUPPORTED_1000baseT_Half;
2634 if (ecmd->duplex == DUPLEX_FULL)
2635 setting = SUPPORTED_100baseT_Full;
2636 else if (ecmd->duplex == DUPLEX_HALF)
2637 setting = SUPPORTED_100baseT_Half;
2643 if (ecmd->duplex == DUPLEX_FULL)
2644 setting = SUPPORTED_10baseT_Full;
2645 else if (ecmd->duplex == DUPLEX_HALF)
2646 setting = SUPPORTED_10baseT_Half;
2654 if ((setting & supported) == 0)
2657 sky2->speed = ecmd->speed;
2658 sky2->duplex = ecmd->duplex;
2661 sky2->autoneg = ecmd->autoneg;
2662 sky2->advertising = ecmd->advertising;
2664 if (netif_running(dev))
2665 sky2_phy_reinit(sky2);
2670 static void sky2_get_drvinfo(struct net_device *dev,
2671 struct ethtool_drvinfo *info)
2673 struct sky2_port *sky2 = netdev_priv(dev);
2675 strcpy(info->driver, DRV_NAME);
2676 strcpy(info->version, DRV_VERSION);
2677 strcpy(info->fw_version, "N/A");
2678 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
2681 static const struct sky2_stat {
2682 char name[ETH_GSTRING_LEN];
2685 { "tx_bytes", GM_TXO_OK_HI },
2686 { "rx_bytes", GM_RXO_OK_HI },
2687 { "tx_broadcast", GM_TXF_BC_OK },
2688 { "rx_broadcast", GM_RXF_BC_OK },
2689 { "tx_multicast", GM_TXF_MC_OK },
2690 { "rx_multicast", GM_RXF_MC_OK },
2691 { "tx_unicast", GM_TXF_UC_OK },
2692 { "rx_unicast", GM_RXF_UC_OK },
2693 { "tx_mac_pause", GM_TXF_MPAUSE },
2694 { "rx_mac_pause", GM_RXF_MPAUSE },
2695 { "collisions", GM_TXF_COL },
2696 { "late_collision",GM_TXF_LAT_COL },
2697 { "aborted", GM_TXF_ABO_COL },
2698 { "single_collisions", GM_TXF_SNG_COL },
2699 { "multi_collisions", GM_TXF_MUL_COL },
2701 { "rx_short", GM_RXF_SHT },
2702 { "rx_runt", GM_RXE_FRAG },
2703 { "rx_64_byte_packets", GM_RXF_64B },
2704 { "rx_65_to_127_byte_packets", GM_RXF_127B },
2705 { "rx_128_to_255_byte_packets", GM_RXF_255B },
2706 { "rx_256_to_511_byte_packets", GM_RXF_511B },
2707 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
2708 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
2709 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
2710 { "rx_too_long", GM_RXF_LNG_ERR },
2711 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
2712 { "rx_jabber", GM_RXF_JAB_PKT },
2713 { "rx_fcs_error", GM_RXF_FCS_ERR },
2715 { "tx_64_byte_packets", GM_TXF_64B },
2716 { "tx_65_to_127_byte_packets", GM_TXF_127B },
2717 { "tx_128_to_255_byte_packets", GM_TXF_255B },
2718 { "tx_256_to_511_byte_packets", GM_TXF_511B },
2719 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
2720 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
2721 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
2722 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
2725 static u32 sky2_get_rx_csum(struct net_device *dev)
2727 struct sky2_port *sky2 = netdev_priv(dev);
2729 return sky2->rx_csum;
2732 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
2734 struct sky2_port *sky2 = netdev_priv(dev);
2736 sky2->rx_csum = data;
2738 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2739 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
2744 static u32 sky2_get_msglevel(struct net_device *netdev)
2746 struct sky2_port *sky2 = netdev_priv(netdev);
2747 return sky2->msg_enable;
2750 static int sky2_nway_reset(struct net_device *dev)
2752 struct sky2_port *sky2 = netdev_priv(dev);
2754 if (!netif_running(dev) || sky2->autoneg != AUTONEG_ENABLE)
2757 sky2_phy_reinit(sky2);
2762 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
2764 struct sky2_hw *hw = sky2->hw;
2765 unsigned port = sky2->port;
2768 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
2769 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
2770 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
2771 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
2773 for (i = 2; i < count; i++)
2774 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
2777 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
2779 struct sky2_port *sky2 = netdev_priv(netdev);
2780 sky2->msg_enable = value;
2783 static int sky2_get_stats_count(struct net_device *dev)
2785 return ARRAY_SIZE(sky2_stats);
2788 static void sky2_get_ethtool_stats(struct net_device *dev,
2789 struct ethtool_stats *stats, u64 * data)
2791 struct sky2_port *sky2 = netdev_priv(dev);
2793 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
2796 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
2800 switch (stringset) {
2802 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
2803 memcpy(data + i * ETH_GSTRING_LEN,
2804 sky2_stats[i].name, ETH_GSTRING_LEN);
2809 /* Use hardware MIB variables for critical path statistics and
2810 * transmit feedback not reported at interrupt.
2811 * Other errors are accounted for in interrupt handler.
2813 static struct net_device_stats *sky2_get_stats(struct net_device *dev)
2815 struct sky2_port *sky2 = netdev_priv(dev);
2818 sky2_phy_stats(sky2, data, ARRAY_SIZE(data));
2820 sky2->net_stats.tx_bytes = data[0];
2821 sky2->net_stats.rx_bytes = data[1];
2822 sky2->net_stats.tx_packets = data[2] + data[4] + data[6];
2823 sky2->net_stats.rx_packets = data[3] + data[5] + data[7];
2824 sky2->net_stats.multicast = data[3] + data[5];
2825 sky2->net_stats.collisions = data[10];
2826 sky2->net_stats.tx_aborted_errors = data[12];
2828 return &sky2->net_stats;
2831 static int sky2_set_mac_address(struct net_device *dev, void *p)
2833 struct sky2_port *sky2 = netdev_priv(dev);
2834 struct sky2_hw *hw = sky2->hw;
2835 unsigned port = sky2->port;
2836 const struct sockaddr *addr = p;
2838 if (!is_valid_ether_addr(addr->sa_data))
2839 return -EADDRNOTAVAIL;
2841 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
2842 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
2843 dev->dev_addr, ETH_ALEN);
2844 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
2845 dev->dev_addr, ETH_ALEN);
2847 /* virtual address for data */
2848 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
2850 /* physical address: used for pause frames */
2851 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
2856 static void inline sky2_add_filter(u8 filter[8], const u8 *addr)
2860 bit = ether_crc(ETH_ALEN, addr) & 63;
2861 filter[bit >> 3] |= 1 << (bit & 7);
2864 static void sky2_set_multicast(struct net_device *dev)
2866 struct sky2_port *sky2 = netdev_priv(dev);
2867 struct sky2_hw *hw = sky2->hw;
2868 unsigned port = sky2->port;
2869 struct dev_mc_list *list = dev->mc_list;
2873 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
2875 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
2876 memset(filter, 0, sizeof(filter));
2878 reg = gma_read16(hw, port, GM_RX_CTRL);
2879 reg |= GM_RXCR_UCF_ENA;
2881 if (dev->flags & IFF_PROMISC) /* promiscuous */
2882 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
2883 else if (dev->flags & IFF_ALLMULTI)
2884 memset(filter, 0xff, sizeof(filter));
2885 else if (dev->mc_count == 0 && !rx_pause)
2886 reg &= ~GM_RXCR_MCF_ENA;
2889 reg |= GM_RXCR_MCF_ENA;
2892 sky2_add_filter(filter, pause_mc_addr);
2894 for (i = 0; list && i < dev->mc_count; i++, list = list->next)
2895 sky2_add_filter(filter, list->dmi_addr);
2898 gma_write16(hw, port, GM_MC_ADDR_H1,
2899 (u16) filter[0] | ((u16) filter[1] << 8));
2900 gma_write16(hw, port, GM_MC_ADDR_H2,
2901 (u16) filter[2] | ((u16) filter[3] << 8));
2902 gma_write16(hw, port, GM_MC_ADDR_H3,
2903 (u16) filter[4] | ((u16) filter[5] << 8));
2904 gma_write16(hw, port, GM_MC_ADDR_H4,
2905 (u16) filter[6] | ((u16) filter[7] << 8));
2907 gma_write16(hw, port, GM_RX_CTRL, reg);
2910 /* Can have one global because blinking is controlled by
2911 * ethtool and that is always under RTNL mutex
2913 static void sky2_led(struct sky2_hw *hw, unsigned port, int on)
2917 switch (hw->chip_id) {
2918 case CHIP_ID_YUKON_XL:
2919 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2920 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2921 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
2922 on ? (PHY_M_LEDC_LOS_CTRL(1) |
2923 PHY_M_LEDC_INIT_CTRL(7) |
2924 PHY_M_LEDC_STA1_CTRL(7) |
2925 PHY_M_LEDC_STA0_CTRL(7))
2928 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2932 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
2933 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
2934 on ? PHY_M_LED_ALL : 0);
2938 /* blink LED's for finding board */
2939 static int sky2_phys_id(struct net_device *dev, u32 data)
2941 struct sky2_port *sky2 = netdev_priv(dev);
2942 struct sky2_hw *hw = sky2->hw;
2943 unsigned port = sky2->port;
2944 u16 ledctrl, ledover = 0;
2949 if (!data || data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ))
2950 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT);
2954 /* save initial values */
2955 spin_lock_bh(&sky2->phy_lock);
2956 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2957 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2958 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2959 ledctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
2960 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2962 ledctrl = gm_phy_read(hw, port, PHY_MARV_LED_CTRL);
2963 ledover = gm_phy_read(hw, port, PHY_MARV_LED_OVER);
2967 while (!interrupted && ms > 0) {
2968 sky2_led(hw, port, onoff);
2971 spin_unlock_bh(&sky2->phy_lock);
2972 interrupted = msleep_interruptible(250);
2973 spin_lock_bh(&sky2->phy_lock);
2978 /* resume regularly scheduled programming */
2979 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2980 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2981 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2982 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ledctrl);
2983 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2985 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
2986 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
2988 spin_unlock_bh(&sky2->phy_lock);
2993 static void sky2_get_pauseparam(struct net_device *dev,
2994 struct ethtool_pauseparam *ecmd)
2996 struct sky2_port *sky2 = netdev_priv(dev);
2998 switch (sky2->flow_mode) {
3000 ecmd->tx_pause = ecmd->rx_pause = 0;
3003 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
3006 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
3009 ecmd->tx_pause = ecmd->rx_pause = 1;
3012 ecmd->autoneg = sky2->autoneg;
3015 static int sky2_set_pauseparam(struct net_device *dev,
3016 struct ethtool_pauseparam *ecmd)
3018 struct sky2_port *sky2 = netdev_priv(dev);
3020 sky2->autoneg = ecmd->autoneg;
3021 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
3023 if (netif_running(dev))
3024 sky2_phy_reinit(sky2);
3029 static int sky2_get_coalesce(struct net_device *dev,
3030 struct ethtool_coalesce *ecmd)
3032 struct sky2_port *sky2 = netdev_priv(dev);
3033 struct sky2_hw *hw = sky2->hw;
3035 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
3036 ecmd->tx_coalesce_usecs = 0;
3038 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
3039 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
3041 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
3043 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
3044 ecmd->rx_coalesce_usecs = 0;
3046 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
3047 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
3049 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
3051 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
3052 ecmd->rx_coalesce_usecs_irq = 0;
3054 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
3055 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
3058 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
3063 /* Note: this affect both ports */
3064 static int sky2_set_coalesce(struct net_device *dev,
3065 struct ethtool_coalesce *ecmd)
3067 struct sky2_port *sky2 = netdev_priv(dev);
3068 struct sky2_hw *hw = sky2->hw;
3069 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
3071 if (ecmd->tx_coalesce_usecs > tmax ||
3072 ecmd->rx_coalesce_usecs > tmax ||
3073 ecmd->rx_coalesce_usecs_irq > tmax)
3076 if (ecmd->tx_max_coalesced_frames >= TX_RING_SIZE-1)
3078 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
3080 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
3083 if (ecmd->tx_coalesce_usecs == 0)
3084 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
3086 sky2_write32(hw, STAT_TX_TIMER_INI,
3087 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
3088 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3090 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
3092 if (ecmd->rx_coalesce_usecs == 0)
3093 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
3095 sky2_write32(hw, STAT_LEV_TIMER_INI,
3096 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
3097 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3099 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
3101 if (ecmd->rx_coalesce_usecs_irq == 0)
3102 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
3104 sky2_write32(hw, STAT_ISR_TIMER_INI,
3105 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
3106 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3108 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
3112 static void sky2_get_ringparam(struct net_device *dev,
3113 struct ethtool_ringparam *ering)
3115 struct sky2_port *sky2 = netdev_priv(dev);
3117 ering->rx_max_pending = RX_MAX_PENDING;
3118 ering->rx_mini_max_pending = 0;
3119 ering->rx_jumbo_max_pending = 0;
3120 ering->tx_max_pending = TX_RING_SIZE - 1;
3122 ering->rx_pending = sky2->rx_pending;
3123 ering->rx_mini_pending = 0;
3124 ering->rx_jumbo_pending = 0;
3125 ering->tx_pending = sky2->tx_pending;
3128 static int sky2_set_ringparam(struct net_device *dev,
3129 struct ethtool_ringparam *ering)
3131 struct sky2_port *sky2 = netdev_priv(dev);
3134 if (ering->rx_pending > RX_MAX_PENDING ||
3135 ering->rx_pending < 8 ||
3136 ering->tx_pending < MAX_SKB_TX_LE ||
3137 ering->tx_pending > TX_RING_SIZE - 1)
3140 if (netif_running(dev))
3143 sky2->rx_pending = ering->rx_pending;
3144 sky2->tx_pending = ering->tx_pending;
3146 if (netif_running(dev)) {
3151 sky2_set_multicast(dev);
3157 static int sky2_get_regs_len(struct net_device *dev)
3163 * Returns copy of control register region
3164 * Note: access to the RAM address register set will cause timeouts.
3166 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
3169 const struct sky2_port *sky2 = netdev_priv(dev);
3170 const void __iomem *io = sky2->hw->regs;
3172 BUG_ON(regs->len < B3_RI_WTO_R1);
3174 memset(p, 0, regs->len);
3176 memcpy_fromio(p, io, B3_RAM_ADDR);
3178 memcpy_fromio(p + B3_RI_WTO_R1,
3180 regs->len - B3_RI_WTO_R1);
3183 static const struct ethtool_ops sky2_ethtool_ops = {
3184 .get_settings = sky2_get_settings,
3185 .set_settings = sky2_set_settings,
3186 .get_drvinfo = sky2_get_drvinfo,
3187 .get_msglevel = sky2_get_msglevel,
3188 .set_msglevel = sky2_set_msglevel,
3189 .nway_reset = sky2_nway_reset,
3190 .get_regs_len = sky2_get_regs_len,
3191 .get_regs = sky2_get_regs,
3192 .get_link = ethtool_op_get_link,
3193 .get_sg = ethtool_op_get_sg,
3194 .set_sg = ethtool_op_set_sg,
3195 .get_tx_csum = ethtool_op_get_tx_csum,
3196 .set_tx_csum = ethtool_op_set_tx_csum,
3197 .get_tso = ethtool_op_get_tso,
3198 .set_tso = ethtool_op_set_tso,
3199 .get_rx_csum = sky2_get_rx_csum,
3200 .set_rx_csum = sky2_set_rx_csum,
3201 .get_strings = sky2_get_strings,
3202 .get_coalesce = sky2_get_coalesce,
3203 .set_coalesce = sky2_set_coalesce,
3204 .get_ringparam = sky2_get_ringparam,
3205 .set_ringparam = sky2_set_ringparam,
3206 .get_pauseparam = sky2_get_pauseparam,
3207 .set_pauseparam = sky2_set_pauseparam,
3208 .phys_id = sky2_phys_id,
3209 .get_stats_count = sky2_get_stats_count,
3210 .get_ethtool_stats = sky2_get_ethtool_stats,
3211 .get_perm_addr = ethtool_op_get_perm_addr,
3214 /* Initialize network device */
3215 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
3216 unsigned port, int highmem)
3218 struct sky2_port *sky2;
3219 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
3222 printk(KERN_ERR "sky2 etherdev alloc failed");
3226 SET_MODULE_OWNER(dev);
3227 SET_NETDEV_DEV(dev, &hw->pdev->dev);
3228 dev->irq = hw->pdev->irq;
3229 dev->open = sky2_up;
3230 dev->stop = sky2_down;
3231 dev->do_ioctl = sky2_ioctl;
3232 dev->hard_start_xmit = sky2_xmit_frame;
3233 dev->get_stats = sky2_get_stats;
3234 dev->set_multicast_list = sky2_set_multicast;
3235 dev->set_mac_address = sky2_set_mac_address;
3236 dev->change_mtu = sky2_change_mtu;
3237 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
3238 dev->tx_timeout = sky2_tx_timeout;
3239 dev->watchdog_timeo = TX_WATCHDOG;
3241 dev->poll = sky2_poll;
3242 dev->weight = NAPI_WEIGHT;
3243 #ifdef CONFIG_NET_POLL_CONTROLLER
3244 /* Network console (only works on port 0)
3245 * because netpoll makes assumptions about NAPI
3248 dev->poll_controller = sky2_netpoll;
3251 sky2 = netdev_priv(dev);
3254 sky2->msg_enable = netif_msg_init(debug, default_msg);
3256 /* Auto speed and flow control */
3257 sky2->autoneg = AUTONEG_ENABLE;
3258 sky2->flow_mode = FC_BOTH;
3262 sky2->advertising = sky2_supported_modes(hw);
3265 spin_lock_init(&sky2->phy_lock);
3266 sky2->tx_pending = TX_DEF_PENDING;
3267 sky2->rx_pending = RX_DEF_PENDING;
3269 hw->dev[port] = dev;
3273 if (hw->chip_id != CHIP_ID_YUKON_EC_U)
3274 dev->features |= NETIF_F_TSO;
3276 dev->features |= NETIF_F_HIGHDMA;
3277 dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
3279 #ifdef SKY2_VLAN_TAG_USED
3280 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
3281 dev->vlan_rx_register = sky2_vlan_rx_register;
3282 dev->vlan_rx_kill_vid = sky2_vlan_rx_kill_vid;
3285 /* read the mac address */
3286 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
3287 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
3289 /* device is off until link detection */
3290 netif_carrier_off(dev);
3291 netif_stop_queue(dev);
3296 static void __devinit sky2_show_addr(struct net_device *dev)
3298 const struct sky2_port *sky2 = netdev_priv(dev);
3300 if (netif_msg_probe(sky2))
3301 printk(KERN_INFO PFX "%s: addr %02x:%02x:%02x:%02x:%02x:%02x\n",
3303 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
3304 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
3307 /* Handle software interrupt used during MSI test */
3308 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
3310 struct sky2_hw *hw = dev_id;
3311 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
3316 if (status & Y2_IS_IRQ_SW) {
3318 wake_up(&hw->msi_wait);
3319 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3321 sky2_write32(hw, B0_Y2_SP_ICR, 2);
3326 /* Test interrupt path by forcing a a software IRQ */
3327 static int __devinit sky2_test_msi(struct sky2_hw *hw)
3329 struct pci_dev *pdev = hw->pdev;
3332 init_waitqueue_head (&hw->msi_wait);
3334 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
3336 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
3338 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3339 pci_name(pdev), pdev->irq);
3343 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
3344 sky2_read8(hw, B0_CTST);
3346 wait_event_timeout(hw->msi_wait, hw->msi, HZ/10);
3349 /* MSI test failed, go back to INTx mode */
3350 printk(KERN_INFO PFX "%s: No interrupt generated using MSI, "
3351 "switching to INTx mode.\n",
3355 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3358 sky2_write32(hw, B0_IMSK, 0);
3359 sky2_read32(hw, B0_IMSK);
3361 free_irq(pdev->irq, hw);
3366 static int __devinit sky2_probe(struct pci_dev *pdev,
3367 const struct pci_device_id *ent)
3369 struct net_device *dev, *dev1 = NULL;
3371 int err, pm_cap, using_dac = 0;
3373 err = pci_enable_device(pdev);
3375 printk(KERN_ERR PFX "%s cannot enable PCI device\n",
3380 err = pci_request_regions(pdev, DRV_NAME);
3382 printk(KERN_ERR PFX "%s cannot obtain PCI resources\n",
3387 pci_set_master(pdev);
3389 /* Find power-management capability. */
3390 pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
3392 printk(KERN_ERR PFX "Cannot find PowerManagement capability, "
3395 goto err_out_free_regions;
3398 if (sizeof(dma_addr_t) > sizeof(u32) &&
3399 !(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
3401 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3403 printk(KERN_ERR PFX "%s unable to obtain 64 bit DMA "
3404 "for consistent allocations\n", pci_name(pdev));
3405 goto err_out_free_regions;
3409 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
3411 printk(KERN_ERR PFX "%s no usable DMA configuration\n",
3413 goto err_out_free_regions;
3418 hw = kzalloc(sizeof(*hw), GFP_KERNEL);
3420 printk(KERN_ERR PFX "%s: cannot allocate hardware struct\n",
3422 goto err_out_free_regions;
3427 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
3429 printk(KERN_ERR PFX "%s: cannot map device registers\n",
3431 goto err_out_free_hw;
3433 hw->pm_cap = pm_cap;
3436 /* The sk98lin vendor driver uses hardware byte swapping but
3437 * this driver uses software swapping.
3441 reg = sky2_pci_read32(hw, PCI_DEV_REG2);
3442 reg &= ~PCI_REV_DESC;
3443 sky2_pci_write32(hw, PCI_DEV_REG2, reg);
3447 /* ring for status responses */
3448 hw->st_le = pci_alloc_consistent(hw->pdev, STATUS_LE_BYTES,
3451 goto err_out_iounmap;
3453 err = sky2_reset(hw);
3455 goto err_out_iounmap;
3457 printk(KERN_INFO PFX "v%s addr 0x%llx irq %d Yukon-%s (0x%x) rev %d\n",
3458 DRV_VERSION, (unsigned long long)pci_resource_start(pdev, 0),
3459 pdev->irq, yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
3460 hw->chip_id, hw->chip_rev);
3462 dev = sky2_init_netdev(hw, 0, using_dac);
3464 goto err_out_free_pci;
3466 if (!disable_msi && pci_enable_msi(pdev) == 0) {
3467 err = sky2_test_msi(hw);
3468 if (err == -EOPNOTSUPP)
3469 pci_disable_msi(pdev);
3471 goto err_out_free_netdev;
3474 err = register_netdev(dev);
3476 printk(KERN_ERR PFX "%s: cannot register net device\n",
3478 goto err_out_free_netdev;
3481 err = request_irq(pdev->irq, sky2_intr, hw->msi ? 0 : IRQF_SHARED,
3484 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3485 pci_name(pdev), pdev->irq);
3486 goto err_out_unregister;
3488 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3490 sky2_show_addr(dev);
3492 if (hw->ports > 1 && (dev1 = sky2_init_netdev(hw, 1, using_dac))) {
3493 if (register_netdev(dev1) == 0)
3494 sky2_show_addr(dev1);
3496 /* Failure to register second port need not be fatal */
3497 printk(KERN_WARNING PFX
3498 "register of second port failed\n");
3504 setup_timer(&hw->idle_timer, sky2_idle, (unsigned long) hw);
3505 sky2_idle_start(hw);
3507 pci_set_drvdata(pdev, hw);
3513 pci_disable_msi(pdev);
3514 unregister_netdev(dev);
3515 err_out_free_netdev:
3518 sky2_write8(hw, B0_CTST, CS_RST_SET);
3519 pci_free_consistent(hw->pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3524 err_out_free_regions:
3525 pci_release_regions(pdev);
3526 pci_disable_device(pdev);
3531 static void __devexit sky2_remove(struct pci_dev *pdev)
3533 struct sky2_hw *hw = pci_get_drvdata(pdev);
3534 struct net_device *dev0, *dev1;
3539 del_timer_sync(&hw->idle_timer);
3541 sky2_write32(hw, B0_IMSK, 0);
3542 synchronize_irq(hw->pdev->irq);
3547 unregister_netdev(dev1);
3548 unregister_netdev(dev0);
3550 sky2_set_power_state(hw, PCI_D3hot);
3551 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
3552 sky2_write8(hw, B0_CTST, CS_RST_SET);
3553 sky2_read8(hw, B0_CTST);
3555 free_irq(pdev->irq, hw);
3557 pci_disable_msi(pdev);
3558 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3559 pci_release_regions(pdev);
3560 pci_disable_device(pdev);
3568 pci_set_drvdata(pdev, NULL);
3572 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
3574 struct sky2_hw *hw = pci_get_drvdata(pdev);
3576 pci_power_t pstate = pci_choose_state(pdev, state);
3578 if (!(pstate == PCI_D3hot || pstate == PCI_D3cold))
3581 del_timer_sync(&hw->idle_timer);
3582 netif_poll_disable(hw->dev[0]);
3584 for (i = 0; i < hw->ports; i++) {
3585 struct net_device *dev = hw->dev[i];
3587 if (netif_running(dev)) {
3589 netif_device_detach(dev);
3593 sky2_write32(hw, B0_IMSK, 0);
3594 pci_save_state(pdev);
3595 sky2_set_power_state(hw, pstate);
3599 static int sky2_resume(struct pci_dev *pdev)
3601 struct sky2_hw *hw = pci_get_drvdata(pdev);
3604 pci_restore_state(pdev);
3605 pci_enable_wake(pdev, PCI_D0, 0);
3606 sky2_set_power_state(hw, PCI_D0);
3608 err = sky2_reset(hw);
3612 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3614 for (i = 0; i < hw->ports; i++) {
3615 struct net_device *dev = hw->dev[i];
3616 if (netif_running(dev)) {
3617 netif_device_attach(dev);
3621 printk(KERN_ERR PFX "%s: could not up: %d\n",
3629 netif_poll_enable(hw->dev[0]);
3630 sky2_idle_start(hw);
3636 static struct pci_driver sky2_driver = {
3638 .id_table = sky2_id_table,
3639 .probe = sky2_probe,
3640 .remove = __devexit_p(sky2_remove),
3642 .suspend = sky2_suspend,
3643 .resume = sky2_resume,
3647 static int __init sky2_init_module(void)
3649 return pci_register_driver(&sky2_driver);
3652 static void __exit sky2_cleanup_module(void)
3654 pci_unregister_driver(&sky2_driver);
3657 module_init(sky2_init_module);
3658 module_exit(sky2_cleanup_module);
3660 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
3661 MODULE_AUTHOR("Stephen Hemminger <shemminger@osdl.org>");
3662 MODULE_LICENSE("GPL");
3663 MODULE_VERSION(DRV_VERSION);