2 * New driver for Marvell Yukon 2 chipset.
3 * Based on earlier sk98lin, and skge driver.
5 * This driver intentionally does not support all the features
6 * of the original driver such as link fail-over and link management because
7 * those should be done at higher levels.
9 * Copyright (C) 2005 Stephen Hemminger <shemminger@osdl.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include <linux/config.h>
27 #include <linux/crc32.h>
28 #include <linux/kernel.h>
29 #include <linux/version.h>
30 #include <linux/module.h>
31 #include <linux/netdevice.h>
32 #include <linux/dma-mapping.h>
33 #include <linux/etherdevice.h>
34 #include <linux/ethtool.h>
35 #include <linux/pci.h>
37 #include <linux/tcp.h>
39 #include <linux/delay.h>
40 #include <linux/workqueue.h>
41 #include <linux/if_vlan.h>
42 #include <linux/prefetch.h>
43 #include <linux/mii.h>
47 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
48 #define SKY2_VLAN_TAG_USED 1
53 #define DRV_NAME "sky2"
54 #define DRV_VERSION "1.1"
55 #define PFX DRV_NAME " "
58 * The Yukon II chipset takes 64 bit command blocks (called list elements)
59 * that are organized into three (receive, transmit, status) different rings
60 * similar to Tigon3. A transmit can require several elements;
61 * a receive requires one (or two if using 64 bit dma).
64 #define RX_LE_SIZE 512
65 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
66 #define RX_MAX_PENDING (RX_LE_SIZE/2 - 2)
67 #define RX_DEF_PENDING RX_MAX_PENDING
68 #define RX_SKB_ALIGN 8
70 #define TX_RING_SIZE 512
71 #define TX_DEF_PENDING (TX_RING_SIZE - 1)
72 #define TX_MIN_PENDING 64
73 #define MAX_SKB_TX_LE (4 + (sizeof(dma_addr_t)/sizeof(u32))*MAX_SKB_FRAGS)
75 #define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
76 #define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
77 #define ETH_JUMBO_MTU 9000
78 #define TX_WATCHDOG (5 * HZ)
79 #define NAPI_WEIGHT 64
80 #define PHY_RETRIES 1000
82 static const u32 default_msg =
83 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
84 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
85 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
87 static int debug = -1; /* defaults above */
88 module_param(debug, int, 0);
89 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
91 static int copybreak __read_mostly = 256;
92 module_param(copybreak, int, 0);
93 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
95 static int disable_msi = 0;
96 module_param(disable_msi, int, 0);
97 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
99 static const struct pci_device_id sky2_id_table[] = {
100 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) },
101 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) },
102 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) },
103 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) },
104 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) },
105 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) },
106 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) },
107 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) },
108 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) },
109 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) },
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) },
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) },
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) },
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) },
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) },
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) },
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) },
120 MODULE_DEVICE_TABLE(pci, sky2_id_table);
122 /* Avoid conditionals by using array */
123 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
124 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
126 /* This driver supports yukon2 chipset only */
127 static const char *yukon2_name[] = {
129 "EC Ultra", /* 0xb4 */
130 "UNKNOWN", /* 0xb5 */
135 /* Access to external PHY */
136 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
140 gma_write16(hw, port, GM_SMI_DATA, val);
141 gma_write16(hw, port, GM_SMI_CTRL,
142 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
144 for (i = 0; i < PHY_RETRIES; i++) {
145 if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
150 printk(KERN_WARNING PFX "%s: phy write timeout\n", hw->dev[port]->name);
154 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
158 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
159 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
161 for (i = 0; i < PHY_RETRIES; i++) {
162 if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL) {
163 *val = gma_read16(hw, port, GM_SMI_DATA);
173 static u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
177 if (__gm_phy_read(hw, port, reg, &v) != 0)
178 printk(KERN_WARNING PFX "%s: phy read timeout\n", hw->dev[port]->name);
182 static int sky2_set_power_state(struct sky2_hw *hw, pci_power_t state)
189 pr_debug("sky2_set_power_state %d\n", state);
190 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
192 power_control = sky2_pci_read16(hw, hw->pm_cap + PCI_PM_PMC);
193 vaux = (sky2_read16(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
194 (power_control & PCI_PM_CAP_PME_D3cold);
196 power_control = sky2_pci_read16(hw, hw->pm_cap + PCI_PM_CTRL);
198 power_control |= PCI_PM_CTRL_PME_STATUS;
199 power_control &= ~(PCI_PM_CTRL_STATE_MASK);
203 /* switch power to VCC (WA for VAUX problem) */
204 sky2_write8(hw, B0_POWER_CTRL,
205 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
207 /* disable Core Clock Division, */
208 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
210 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
211 /* enable bits are inverted */
212 sky2_write8(hw, B2_Y2_CLK_GATE,
213 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
214 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
215 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
217 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
219 /* Turn off phy power saving */
220 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
221 reg1 &= ~(PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
223 /* looks like this XL is back asswards .. */
224 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1) {
225 reg1 |= PCI_Y2_PHY1_COMA;
227 reg1 |= PCI_Y2_PHY2_COMA;
230 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
231 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
232 reg1 = sky2_pci_read32(hw, PCI_DEV_REG4);
233 reg1 &= P_ASPM_CONTROL_MSK;
234 sky2_pci_write32(hw, PCI_DEV_REG4, reg1);
235 sky2_pci_write32(hw, PCI_DEV_REG5, 0);
238 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
244 /* Turn on phy power saving */
245 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
246 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
247 reg1 &= ~(PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
249 reg1 |= (PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
250 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
252 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
253 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
255 /* enable bits are inverted */
256 sky2_write8(hw, B2_Y2_CLK_GATE,
257 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
258 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
259 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
261 /* switch power to VAUX */
262 if (vaux && state != PCI_D3cold)
263 sky2_write8(hw, B0_POWER_CTRL,
264 (PC_VAUX_ENA | PC_VCC_ENA |
265 PC_VAUX_ON | PC_VCC_OFF));
268 printk(KERN_ERR PFX "Unknown power state %d\n", state);
272 sky2_pci_write16(hw, hw->pm_cap + PCI_PM_CTRL, power_control);
273 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
277 static void sky2_phy_reset(struct sky2_hw *hw, unsigned port)
281 /* disable all GMAC IRQ's */
282 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
283 /* disable PHY IRQs */
284 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
286 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
287 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
288 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
289 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
291 reg = gma_read16(hw, port, GM_RX_CTRL);
292 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
293 gma_write16(hw, port, GM_RX_CTRL, reg);
296 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
298 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
299 u16 ctrl, ct1000, adv, pg, ledctrl, ledover;
301 if (sky2->autoneg == AUTONEG_ENABLE && hw->chip_id != CHIP_ID_YUKON_XL) {
302 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
304 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
306 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
308 if (hw->chip_id == CHIP_ID_YUKON_EC)
309 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
311 ectrl |= PHY_M_EC_M_DSC(2) | PHY_M_EC_S_DSC(3);
313 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
316 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
318 if (hw->chip_id == CHIP_ID_YUKON_FE) {
319 /* enable automatic crossover */
320 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
322 /* disable energy detect */
323 ctrl &= ~PHY_M_PC_EN_DET_MSK;
325 /* enable automatic crossover */
326 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
328 if (sky2->autoneg == AUTONEG_ENABLE &&
329 hw->chip_id == CHIP_ID_YUKON_XL) {
330 ctrl &= ~PHY_M_PC_DSC_MSK;
331 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
334 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
336 /* workaround for deviation #4.88 (CRC errors) */
337 /* disable Automatic Crossover */
339 ctrl &= ~PHY_M_PC_MDIX_MSK;
340 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
342 if (hw->chip_id == CHIP_ID_YUKON_XL) {
343 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
344 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
345 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
346 ctrl &= ~PHY_M_MAC_MD_MSK;
347 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
348 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
350 /* select page 1 to access Fiber registers */
351 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
355 ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
356 if (sky2->autoneg == AUTONEG_DISABLE)
361 ctrl |= PHY_CT_RESET;
362 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
368 if (sky2->autoneg == AUTONEG_ENABLE) {
370 if (sky2->advertising & ADVERTISED_1000baseT_Full)
371 ct1000 |= PHY_M_1000C_AFD;
372 if (sky2->advertising & ADVERTISED_1000baseT_Half)
373 ct1000 |= PHY_M_1000C_AHD;
374 if (sky2->advertising & ADVERTISED_100baseT_Full)
375 adv |= PHY_M_AN_100_FD;
376 if (sky2->advertising & ADVERTISED_100baseT_Half)
377 adv |= PHY_M_AN_100_HD;
378 if (sky2->advertising & ADVERTISED_10baseT_Full)
379 adv |= PHY_M_AN_10_FD;
380 if (sky2->advertising & ADVERTISED_10baseT_Half)
381 adv |= PHY_M_AN_10_HD;
382 } else /* special defines for FIBER (88E1011S only) */
383 adv |= PHY_M_AN_1000X_AHD | PHY_M_AN_1000X_AFD;
385 /* Set Flow-control capabilities */
386 if (sky2->tx_pause && sky2->rx_pause)
387 adv |= PHY_AN_PAUSE_CAP; /* symmetric */
388 else if (sky2->rx_pause && !sky2->tx_pause)
389 adv |= PHY_AN_PAUSE_ASYM | PHY_AN_PAUSE_CAP;
390 else if (!sky2->rx_pause && sky2->tx_pause)
391 adv |= PHY_AN_PAUSE_ASYM; /* local */
393 /* Restart Auto-negotiation */
394 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
396 /* forced speed/duplex settings */
397 ct1000 = PHY_M_1000C_MSE;
399 if (sky2->duplex == DUPLEX_FULL)
400 ctrl |= PHY_CT_DUP_MD;
402 switch (sky2->speed) {
404 ctrl |= PHY_CT_SP1000;
407 ctrl |= PHY_CT_SP100;
411 ctrl |= PHY_CT_RESET;
414 if (hw->chip_id != CHIP_ID_YUKON_FE)
415 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
417 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
418 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
420 /* Setup Phy LED's */
421 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
424 switch (hw->chip_id) {
425 case CHIP_ID_YUKON_FE:
426 /* on 88E3082 these bits are at 11..9 (shifted left) */
427 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
429 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
431 /* delete ACT LED control bits */
432 ctrl &= ~PHY_M_FELP_LED1_MSK;
433 /* change ACT LED control to blink mode */
434 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
435 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
438 case CHIP_ID_YUKON_XL:
439 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
441 /* select page 3 to access LED control register */
442 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
444 /* set LED Function Control register */
445 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
446 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
447 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
448 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
450 /* set Polarity Control register */
451 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
452 (PHY_M_POLC_LS1_P_MIX(4) |
453 PHY_M_POLC_IS0_P_MIX(4) |
454 PHY_M_POLC_LOS_CTRL(2) |
455 PHY_M_POLC_INIT_CTRL(2) |
456 PHY_M_POLC_STA1_CTRL(2) |
457 PHY_M_POLC_STA0_CTRL(2)));
459 /* restore page register */
460 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
464 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
465 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
466 /* turn off the Rx LED (LED_RX) */
467 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
470 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev >= 2) {
471 /* apply fixes in PHY AFE */
472 gm_phy_write(hw, port, 22, 255);
473 /* increase differential signal amplitude in 10BASE-T */
474 gm_phy_write(hw, port, 24, 0xaa99);
475 gm_phy_write(hw, port, 23, 0x2011);
477 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
478 gm_phy_write(hw, port, 24, 0xa204);
479 gm_phy_write(hw, port, 23, 0x2002);
481 /* set page register to 0 */
482 gm_phy_write(hw, port, 22, 0);
484 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
486 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
487 /* turn on 100 Mbps LED (LED_LINK100) */
488 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
492 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
495 /* Enable phy interrupt on auto-negotiation complete (or link up) */
496 if (sky2->autoneg == AUTONEG_ENABLE)
497 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
499 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
502 /* Force a renegotiation */
503 static void sky2_phy_reinit(struct sky2_port *sky2)
505 spin_lock_bh(&sky2->phy_lock);
506 sky2_phy_init(sky2->hw, sky2->port);
507 spin_unlock_bh(&sky2->phy_lock);
510 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
512 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
515 const u8 *addr = hw->dev[port]->dev_addr;
517 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
518 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR|GPC_ENA_PAUSE);
520 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
522 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
523 /* WA DEV_472 -- looks like crossed wires on port 2 */
524 /* clear GMAC 1 Control reset */
525 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
527 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
528 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
529 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
530 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
531 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
534 if (sky2->autoneg == AUTONEG_DISABLE) {
535 reg = gma_read16(hw, port, GM_GP_CTRL);
536 reg |= GM_GPCR_AU_ALL_DIS;
537 gma_write16(hw, port, GM_GP_CTRL, reg);
538 gma_read16(hw, port, GM_GP_CTRL);
540 switch (sky2->speed) {
542 reg &= ~GM_GPCR_SPEED_100;
543 reg |= GM_GPCR_SPEED_1000;
546 reg &= ~GM_GPCR_SPEED_1000;
547 reg |= GM_GPCR_SPEED_100;
550 reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
554 if (sky2->duplex == DUPLEX_FULL)
555 reg |= GM_GPCR_DUP_FULL;
557 reg = GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100 | GM_GPCR_DUP_FULL;
559 if (!sky2->tx_pause && !sky2->rx_pause) {
560 sky2_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
562 GM_GPCR_FC_TX_DIS | GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
563 } else if (sky2->tx_pause && !sky2->rx_pause) {
564 /* disable Rx flow-control */
565 reg |= GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
568 gma_write16(hw, port, GM_GP_CTRL, reg);
570 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
572 spin_lock_bh(&sky2->phy_lock);
573 sky2_phy_init(hw, port);
574 spin_unlock_bh(&sky2->phy_lock);
577 reg = gma_read16(hw, port, GM_PHY_ADDR);
578 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
580 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
581 gma_read16(hw, port, i);
582 gma_write16(hw, port, GM_PHY_ADDR, reg);
584 /* transmit control */
585 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
587 /* receive control reg: unicast + multicast + no FCS */
588 gma_write16(hw, port, GM_RX_CTRL,
589 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
591 /* transmit flow control */
592 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
594 /* transmit parameter */
595 gma_write16(hw, port, GM_TX_PARAM,
596 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
597 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
598 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
599 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
601 /* serial mode register */
602 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
603 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
605 if (hw->dev[port]->mtu > ETH_DATA_LEN)
606 reg |= GM_SMOD_JUMBO_ENA;
608 gma_write16(hw, port, GM_SERIAL_MODE, reg);
610 /* virtual address for data */
611 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
613 /* physical address: used for pause frames */
614 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
616 /* ignore counter overflows */
617 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
618 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
619 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
621 /* Configure Rx MAC FIFO */
622 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
623 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
624 GMF_OPER_ON | GMF_RX_F_FL_ON);
626 /* Flush Rx MAC FIFO on any flow control or error */
627 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
629 /* Set threshold to 0xa (64 bytes)
630 * ASF disabled so no need to do WA dev #4.30
632 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF);
634 /* Configure Tx MAC FIFO */
635 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
636 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
638 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
639 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
640 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
641 if (hw->dev[port]->mtu > ETH_DATA_LEN) {
642 /* set Tx GMAC FIFO Almost Empty Threshold */
643 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR), 0x180);
644 /* Disable Store & Forward mode for TX */
645 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
651 /* Assign Ram Buffer allocation.
652 * start and end are in units of 4k bytes
653 * ram registers are in units of 64bit words
655 static void sky2_ramset(struct sky2_hw *hw, u16 q, u8 startk, u8 endk)
659 start = startk * 4096/8;
660 end = (endk * 4096/8) - 1;
662 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
663 sky2_write32(hw, RB_ADDR(q, RB_START), start);
664 sky2_write32(hw, RB_ADDR(q, RB_END), end);
665 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
666 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
668 if (q == Q_R1 || q == Q_R2) {
669 u32 space = (endk - startk) * 4096/8;
670 u32 tp = space - space/4;
672 /* On receive queue's set the thresholds
673 * give receiver priority when > 3/4 full
674 * send pause when down to 2K
676 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
677 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
680 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
681 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
683 /* Enable store & forward on Tx queue's because
684 * Tx FIFO is only 1K on Yukon
686 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
689 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
690 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
693 /* Setup Bus Memory Interface */
694 static void sky2_qset(struct sky2_hw *hw, u16 q)
696 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
697 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
698 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
699 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
702 /* Setup prefetch unit registers. This is the interface between
703 * hardware and driver list elements
705 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
708 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
709 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
710 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
711 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
712 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
713 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
715 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
718 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
720 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
722 sky2->tx_prod = (sky2->tx_prod + 1) % TX_RING_SIZE;
726 /* Update chip's next pointer */
727 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
730 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
735 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
737 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
738 sky2->rx_put = (sky2->rx_put + 1) % RX_LE_SIZE;
742 /* Return high part of DMA address (could be 32 or 64 bit) */
743 static inline u32 high32(dma_addr_t a)
745 return sizeof(a) > sizeof(u32) ? (a >> 16) >> 16 : 0;
748 /* Build description to hardware about buffer */
749 static void sky2_rx_add(struct sky2_port *sky2, dma_addr_t map)
751 struct sky2_rx_le *le;
752 u32 hi = high32(map);
753 u16 len = sky2->rx_bufsize;
755 if (sky2->rx_addr64 != hi) {
756 le = sky2_next_rx(sky2);
757 le->addr = cpu_to_le32(hi);
759 le->opcode = OP_ADDR64 | HW_OWNER;
760 sky2->rx_addr64 = high32(map + len);
763 le = sky2_next_rx(sky2);
764 le->addr = cpu_to_le32((u32) map);
765 le->length = cpu_to_le16(len);
767 le->opcode = OP_PACKET | HW_OWNER;
771 /* Tell chip where to start receive checksum.
772 * Actually has two checksums, but set both same to avoid possible byte
775 static void rx_set_checksum(struct sky2_port *sky2)
777 struct sky2_rx_le *le;
779 le = sky2_next_rx(sky2);
780 le->addr = (ETH_HLEN << 16) | ETH_HLEN;
782 le->opcode = OP_TCPSTART | HW_OWNER;
784 sky2_write32(sky2->hw,
785 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
786 sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
791 * The RX Stop command will not work for Yukon-2 if the BMU does not
792 * reach the end of packet and since we can't make sure that we have
793 * incoming data, we must reset the BMU while it is not doing a DMA
794 * transfer. Since it is possible that the RX path is still active,
795 * the RX RAM buffer will be stopped first, so any possible incoming
796 * data will not trigger a DMA. After the RAM buffer is stopped, the
797 * BMU is polled until any DMA in progress is ended and only then it
800 static void sky2_rx_stop(struct sky2_port *sky2)
802 struct sky2_hw *hw = sky2->hw;
803 unsigned rxq = rxqaddr[sky2->port];
806 /* disable the RAM Buffer receive queue */
807 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
809 for (i = 0; i < 0xffff; i++)
810 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
811 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
814 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
817 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
819 /* reset the Rx prefetch unit */
820 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
823 /* Clean out receive buffer area, assumes receiver hardware stopped */
824 static void sky2_rx_clean(struct sky2_port *sky2)
828 memset(sky2->rx_le, 0, RX_LE_BYTES);
829 for (i = 0; i < sky2->rx_pending; i++) {
830 struct ring_info *re = sky2->rx_ring + i;
833 pci_unmap_single(sky2->hw->pdev,
834 re->mapaddr, sky2->rx_bufsize,
842 /* Basic MII support */
843 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
845 struct mii_ioctl_data *data = if_mii(ifr);
846 struct sky2_port *sky2 = netdev_priv(dev);
847 struct sky2_hw *hw = sky2->hw;
848 int err = -EOPNOTSUPP;
850 if (!netif_running(dev))
851 return -ENODEV; /* Phy still in reset */
855 data->phy_id = PHY_ADDR_MARV;
861 spin_lock_bh(&sky2->phy_lock);
862 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
863 spin_unlock_bh(&sky2->phy_lock);
870 if (!capable(CAP_NET_ADMIN))
873 spin_lock_bh(&sky2->phy_lock);
874 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
876 spin_unlock_bh(&sky2->phy_lock);
882 #ifdef SKY2_VLAN_TAG_USED
883 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
885 struct sky2_port *sky2 = netdev_priv(dev);
886 struct sky2_hw *hw = sky2->hw;
887 u16 port = sky2->port;
889 spin_lock_bh(&sky2->tx_lock);
891 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_ON);
892 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_ON);
895 spin_unlock_bh(&sky2->tx_lock);
898 static void sky2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
900 struct sky2_port *sky2 = netdev_priv(dev);
901 struct sky2_hw *hw = sky2->hw;
902 u16 port = sky2->port;
904 spin_lock_bh(&sky2->tx_lock);
906 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_OFF);
907 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_OFF);
909 sky2->vlgrp->vlan_devices[vid] = NULL;
911 spin_unlock_bh(&sky2->tx_lock);
916 * It appears the hardware has a bug in the FIFO logic that
917 * cause it to hang if the FIFO gets overrun and the receive buffer
918 * is not aligned. ALso alloc_skb() won't align properly if slab
919 * debugging is enabled.
921 static inline struct sk_buff *sky2_alloc_skb(unsigned int size, gfp_t gfp_mask)
925 skb = alloc_skb(size + RX_SKB_ALIGN, gfp_mask);
927 unsigned long p = (unsigned long) skb->data;
929 ((p + RX_SKB_ALIGN - 1) & ~(RX_SKB_ALIGN - 1)) - p);
936 * Allocate and setup receiver buffer pool.
937 * In case of 64 bit dma, there are 2X as many list elements
938 * available as ring entries
939 * and need to reserve one list element so we don't wrap around.
941 static int sky2_rx_start(struct sky2_port *sky2)
943 struct sky2_hw *hw = sky2->hw;
944 unsigned rxq = rxqaddr[sky2->port];
947 sky2->rx_put = sky2->rx_next = 0;
950 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev >= 2) {
951 /* MAC Rx RAM Read is controlled by hardware */
952 sky2_write32(hw, Q_ADDR(rxq, Q_F), F_M_RX_RAM_DIS);
955 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
957 rx_set_checksum(sky2);
958 for (i = 0; i < sky2->rx_pending; i++) {
959 struct ring_info *re = sky2->rx_ring + i;
961 re->skb = sky2_alloc_skb(sky2->rx_bufsize, GFP_KERNEL);
965 re->mapaddr = pci_map_single(hw->pdev, re->skb->data,
966 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
967 sky2_rx_add(sky2, re->mapaddr);
970 /* Truncate oversize frames */
971 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), sky2->rx_bufsize - 8);
972 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
974 /* Tell chip about available buffers */
975 sky2_write16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX), sky2->rx_put);
982 /* Bring up network interface. */
983 static int sky2_up(struct net_device *dev)
985 struct sky2_port *sky2 = netdev_priv(dev);
986 struct sky2_hw *hw = sky2->hw;
987 unsigned port = sky2->port;
988 u32 ramsize, rxspace, imask;
991 if (netif_msg_ifup(sky2))
992 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
994 /* must be power of 2 */
995 sky2->tx_le = pci_alloc_consistent(hw->pdev,
997 sizeof(struct sky2_tx_le),
1002 sky2->tx_ring = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info),
1006 sky2->tx_prod = sky2->tx_cons = 0;
1008 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1012 memset(sky2->rx_le, 0, RX_LE_BYTES);
1014 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct ring_info),
1019 sky2_mac_init(hw, port);
1021 /* Determine available ram buffer space (in 4K blocks).
1022 * Note: not sure about the FE setting below yet
1024 if (hw->chip_id == CHIP_ID_YUKON_FE)
1027 ramsize = sky2_read8(hw, B2_E_0);
1029 /* Give transmitter one third (rounded up) */
1030 rxspace = ramsize - (ramsize + 2) / 3;
1032 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1033 sky2_ramset(hw, txqaddr[port], rxspace, ramsize);
1035 /* Make sure SyncQ is disabled */
1036 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1039 sky2_qset(hw, txqaddr[port]);
1041 /* Set almost empty threshold */
1042 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev == 1)
1043 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), 0x1a0);
1045 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1048 err = sky2_rx_start(sky2);
1052 /* Enable interrupts from phy/mac for port */
1053 imask = sky2_read32(hw, B0_IMSK);
1054 imask |= (port == 0) ? Y2_IS_PORT_1 : Y2_IS_PORT_2;
1055 sky2_write32(hw, B0_IMSK, imask);
1061 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1062 sky2->rx_le, sky2->rx_le_map);
1066 pci_free_consistent(hw->pdev,
1067 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1068 sky2->tx_le, sky2->tx_le_map);
1071 kfree(sky2->tx_ring);
1072 kfree(sky2->rx_ring);
1074 sky2->tx_ring = NULL;
1075 sky2->rx_ring = NULL;
1079 /* Modular subtraction in ring */
1080 static inline int tx_dist(unsigned tail, unsigned head)
1082 return (head - tail) % TX_RING_SIZE;
1085 /* Number of list elements available for next tx */
1086 static inline int tx_avail(const struct sky2_port *sky2)
1088 return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
1091 /* Estimate of number of transmit list elements required */
1092 static unsigned tx_le_req(const struct sk_buff *skb)
1096 count = sizeof(dma_addr_t) / sizeof(u32);
1097 count += skb_shinfo(skb)->nr_frags * count;
1099 if (skb_shinfo(skb)->tso_size)
1102 if (skb->ip_summed == CHECKSUM_HW)
1109 * Put one packet in ring for transmit.
1110 * A single packet can generate multiple list elements, and
1111 * the number of ring elements will probably be less than the number
1112 * of list elements used.
1114 * No BH disabling for tx_lock here (like tg3)
1116 static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1118 struct sky2_port *sky2 = netdev_priv(dev);
1119 struct sky2_hw *hw = sky2->hw;
1120 struct sky2_tx_le *le = NULL;
1121 struct tx_ring_info *re;
1129 /* No BH disabling for tx_lock here. We are running in BH disabled
1130 * context and TX reclaim runs via poll inside of a software
1131 * interrupt, and no related locks in IRQ processing.
1133 if (!spin_trylock(&sky2->tx_lock))
1134 return NETDEV_TX_LOCKED;
1136 if (unlikely(tx_avail(sky2) < tx_le_req(skb))) {
1137 /* There is a known but harmless race with lockless tx
1138 * and netif_stop_queue.
1140 if (!netif_queue_stopped(dev)) {
1141 netif_stop_queue(dev);
1142 if (net_ratelimit())
1143 printk(KERN_WARNING PFX "%s: ring full when queue awake!\n",
1146 spin_unlock(&sky2->tx_lock);
1148 return NETDEV_TX_BUSY;
1151 if (unlikely(netif_msg_tx_queued(sky2)))
1152 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1153 dev->name, sky2->tx_prod, skb->len);
1155 len = skb_headlen(skb);
1156 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1157 addr64 = high32(mapping);
1159 re = sky2->tx_ring + sky2->tx_prod;
1161 /* Send high bits if changed or crosses boundary */
1162 if (addr64 != sky2->tx_addr64 || high32(mapping + len) != sky2->tx_addr64) {
1163 le = get_tx_le(sky2);
1164 le->tx.addr = cpu_to_le32(addr64);
1166 le->opcode = OP_ADDR64 | HW_OWNER;
1167 sky2->tx_addr64 = high32(mapping + len);
1170 /* Check for TCP Segmentation Offload */
1171 mss = skb_shinfo(skb)->tso_size;
1173 /* just drop the packet if non-linear expansion fails */
1174 if (skb_header_cloned(skb) &&
1175 pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) {
1180 mss += ((skb->h.th->doff - 5) * 4); /* TCP options */
1181 mss += (skb->nh.iph->ihl * 4) + sizeof(struct tcphdr);
1185 if (mss != sky2->tx_last_mss) {
1186 le = get_tx_le(sky2);
1187 le->tx.tso.size = cpu_to_le16(mss);
1188 le->tx.tso.rsvd = 0;
1189 le->opcode = OP_LRGLEN | HW_OWNER;
1191 sky2->tx_last_mss = mss;
1195 #ifdef SKY2_VLAN_TAG_USED
1196 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1197 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1199 le = get_tx_le(sky2);
1201 le->opcode = OP_VLAN|HW_OWNER;
1204 le->opcode |= OP_VLAN;
1205 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1210 /* Handle TCP checksum offload */
1211 if (skb->ip_summed == CHECKSUM_HW) {
1212 u16 hdr = skb->h.raw - skb->data;
1213 u16 offset = hdr + skb->csum;
1215 ctrl = CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1216 if (skb->nh.iph->protocol == IPPROTO_UDP)
1219 le = get_tx_le(sky2);
1220 le->tx.csum.start = cpu_to_le16(hdr);
1221 le->tx.csum.offset = cpu_to_le16(offset);
1222 le->length = 0; /* initial checksum value */
1223 le->ctrl = 1; /* one packet */
1224 le->opcode = OP_TCPLISW | HW_OWNER;
1227 le = get_tx_le(sky2);
1228 le->tx.addr = cpu_to_le32((u32) mapping);
1229 le->length = cpu_to_le16(len);
1231 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1233 /* Record the transmit mapping info */
1235 pci_unmap_addr_set(re, mapaddr, mapping);
1237 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1238 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1239 struct tx_ring_info *fre;
1241 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1242 frag->size, PCI_DMA_TODEVICE);
1243 addr64 = high32(mapping);
1244 if (addr64 != sky2->tx_addr64) {
1245 le = get_tx_le(sky2);
1246 le->tx.addr = cpu_to_le32(addr64);
1248 le->opcode = OP_ADDR64 | HW_OWNER;
1249 sky2->tx_addr64 = addr64;
1252 le = get_tx_le(sky2);
1253 le->tx.addr = cpu_to_le32((u32) mapping);
1254 le->length = cpu_to_le16(frag->size);
1256 le->opcode = OP_BUFFER | HW_OWNER;
1259 + ((re - sky2->tx_ring) + i + 1) % TX_RING_SIZE;
1260 pci_unmap_addr_set(fre, mapaddr, mapping);
1263 re->idx = sky2->tx_prod;
1266 avail = tx_avail(sky2);
1267 if (mss != 0 || avail < TX_MIN_PENDING) {
1268 le->ctrl |= FRC_STAT;
1269 if (avail <= MAX_SKB_TX_LE)
1270 netif_stop_queue(dev);
1273 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1276 spin_unlock(&sky2->tx_lock);
1278 dev->trans_start = jiffies;
1279 return NETDEV_TX_OK;
1283 * Free ring elements from starting at tx_cons until "done"
1285 * NB: the hardware will tell us about partial completion of multi-part
1286 * buffers; these are deferred until completion.
1288 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1290 struct net_device *dev = sky2->netdev;
1291 struct pci_dev *pdev = sky2->hw->pdev;
1295 BUG_ON(done >= TX_RING_SIZE);
1297 if (unlikely(netif_msg_tx_done(sky2)))
1298 printk(KERN_DEBUG "%s: tx done, up to %u\n",
1301 for (put = sky2->tx_cons; put != done; put = nxt) {
1302 struct tx_ring_info *re = sky2->tx_ring + put;
1303 struct sk_buff *skb = re->skb;
1306 BUG_ON(nxt >= TX_RING_SIZE);
1307 prefetch(sky2->tx_ring + nxt);
1309 /* Check for partial status */
1310 if (tx_dist(put, done) < tx_dist(put, nxt))
1314 pci_unmap_single(pdev, pci_unmap_addr(re, mapaddr),
1315 skb_headlen(skb), PCI_DMA_TODEVICE);
1317 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1318 struct tx_ring_info *fre;
1319 fre = sky2->tx_ring + (put + i + 1) % TX_RING_SIZE;
1320 pci_unmap_page(pdev, pci_unmap_addr(fre, mapaddr),
1321 skb_shinfo(skb)->frags[i].size,
1328 sky2->tx_cons = put;
1329 if (tx_avail(sky2) > MAX_SKB_TX_LE)
1330 netif_wake_queue(dev);
1333 /* Cleanup all untransmitted buffers, assume transmitter not running */
1334 static void sky2_tx_clean(struct sky2_port *sky2)
1336 spin_lock_bh(&sky2->tx_lock);
1337 sky2_tx_complete(sky2, sky2->tx_prod);
1338 spin_unlock_bh(&sky2->tx_lock);
1341 /* Network shutdown */
1342 static int sky2_down(struct net_device *dev)
1344 struct sky2_port *sky2 = netdev_priv(dev);
1345 struct sky2_hw *hw = sky2->hw;
1346 unsigned port = sky2->port;
1350 /* Never really got started! */
1354 if (netif_msg_ifdown(sky2))
1355 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1357 /* Stop more packets from being queued */
1358 netif_stop_queue(dev);
1360 sky2_phy_reset(hw, port);
1362 /* Stop transmitter */
1363 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1364 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1366 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1367 RB_RST_SET | RB_DIS_OP_MD);
1369 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1370 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1371 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1373 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1375 /* Workaround shared GMAC reset */
1376 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1377 && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1378 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1380 /* Disable Force Sync bit and Enable Alloc bit */
1381 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1382 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1384 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1385 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1386 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1388 /* Reset the PCI FIFO of the async Tx queue */
1389 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1390 BMU_RST_SET | BMU_FIFO_RST);
1392 /* Reset the Tx prefetch units */
1393 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1396 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1400 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1401 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1403 /* Disable port IRQ */
1404 imask = sky2_read32(hw, B0_IMSK);
1405 imask &= ~(sky2->port == 0) ? Y2_IS_PORT_1 : Y2_IS_PORT_2;
1406 sky2_write32(hw, B0_IMSK, imask);
1408 /* turn off LED's */
1409 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1411 synchronize_irq(hw->pdev->irq);
1413 sky2_tx_clean(sky2);
1414 sky2_rx_clean(sky2);
1416 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1417 sky2->rx_le, sky2->rx_le_map);
1418 kfree(sky2->rx_ring);
1420 pci_free_consistent(hw->pdev,
1421 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1422 sky2->tx_le, sky2->tx_le_map);
1423 kfree(sky2->tx_ring);
1428 sky2->rx_ring = NULL;
1429 sky2->tx_ring = NULL;
1434 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1439 if (hw->chip_id == CHIP_ID_YUKON_FE)
1440 return (aux & PHY_M_PS_SPEED_100) ? SPEED_100 : SPEED_10;
1442 switch (aux & PHY_M_PS_SPEED_MSK) {
1443 case PHY_M_PS_SPEED_1000:
1445 case PHY_M_PS_SPEED_100:
1452 static void sky2_link_up(struct sky2_port *sky2)
1454 struct sky2_hw *hw = sky2->hw;
1455 unsigned port = sky2->port;
1458 /* Enable Transmit FIFO Underrun */
1459 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
1461 reg = gma_read16(hw, port, GM_GP_CTRL);
1462 if (sky2->autoneg == AUTONEG_DISABLE) {
1463 reg |= GM_GPCR_AU_ALL_DIS;
1465 /* Is write/read necessary? Copied from sky2_mac_init */
1466 gma_write16(hw, port, GM_GP_CTRL, reg);
1467 gma_read16(hw, port, GM_GP_CTRL);
1469 switch (sky2->speed) {
1471 reg &= ~GM_GPCR_SPEED_100;
1472 reg |= GM_GPCR_SPEED_1000;
1475 reg &= ~GM_GPCR_SPEED_1000;
1476 reg |= GM_GPCR_SPEED_100;
1479 reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
1483 reg &= ~GM_GPCR_AU_ALL_DIS;
1485 if (sky2->duplex == DUPLEX_FULL || sky2->autoneg == AUTONEG_ENABLE)
1486 reg |= GM_GPCR_DUP_FULL;
1489 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1490 gma_write16(hw, port, GM_GP_CTRL, reg);
1491 gma_read16(hw, port, GM_GP_CTRL);
1493 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1495 netif_carrier_on(sky2->netdev);
1496 netif_wake_queue(sky2->netdev);
1498 /* Turn on link LED */
1499 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1500 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1502 if (hw->chip_id == CHIP_ID_YUKON_XL) {
1503 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
1505 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
1506 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
1507 PHY_M_LEDC_INIT_CTRL(sky2->speed ==
1509 PHY_M_LEDC_STA1_CTRL(sky2->speed ==
1510 SPEED_100 ? 7 : 0) |
1511 PHY_M_LEDC_STA0_CTRL(sky2->speed ==
1512 SPEED_1000 ? 7 : 0));
1513 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
1516 if (netif_msg_link(sky2))
1517 printk(KERN_INFO PFX
1518 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1519 sky2->netdev->name, sky2->speed,
1520 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1521 (sky2->tx_pause && sky2->rx_pause) ? "both" :
1522 sky2->tx_pause ? "tx" : sky2->rx_pause ? "rx" : "none");
1525 static void sky2_link_down(struct sky2_port *sky2)
1527 struct sky2_hw *hw = sky2->hw;
1528 unsigned port = sky2->port;
1531 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1533 reg = gma_read16(hw, port, GM_GP_CTRL);
1534 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1535 gma_write16(hw, port, GM_GP_CTRL, reg);
1536 gma_read16(hw, port, GM_GP_CTRL); /* PCI post */
1538 if (sky2->rx_pause && !sky2->tx_pause) {
1539 /* restore Asymmetric Pause bit */
1540 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV,
1541 gm_phy_read(hw, port, PHY_MARV_AUNE_ADV)
1545 netif_carrier_off(sky2->netdev);
1546 netif_stop_queue(sky2->netdev);
1548 /* Turn on link LED */
1549 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1551 if (netif_msg_link(sky2))
1552 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
1553 sky2_phy_init(hw, port);
1556 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
1558 struct sky2_hw *hw = sky2->hw;
1559 unsigned port = sky2->port;
1562 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
1564 if (lpa & PHY_M_AN_RF) {
1565 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
1569 if (hw->chip_id != CHIP_ID_YUKON_FE &&
1570 gm_phy_read(hw, port, PHY_MARV_1000T_STAT) & PHY_B_1000S_MSF) {
1571 printk(KERN_ERR PFX "%s: master/slave fault",
1572 sky2->netdev->name);
1576 if (!(aux & PHY_M_PS_SPDUP_RES)) {
1577 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
1578 sky2->netdev->name);
1582 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1584 sky2->speed = sky2_phy_speed(hw, aux);
1586 /* Pause bits are offset (9..8) */
1587 if (hw->chip_id == CHIP_ID_YUKON_XL)
1590 sky2->rx_pause = (aux & PHY_M_PS_RX_P_EN) != 0;
1591 sky2->tx_pause = (aux & PHY_M_PS_TX_P_EN) != 0;
1593 if ((sky2->tx_pause || sky2->rx_pause)
1594 && !(sky2->speed < SPEED_1000 && sky2->duplex == DUPLEX_HALF))
1595 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
1597 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1602 /* Interrupt from PHY */
1603 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
1605 struct net_device *dev = hw->dev[port];
1606 struct sky2_port *sky2 = netdev_priv(dev);
1607 u16 istatus, phystat;
1609 spin_lock(&sky2->phy_lock);
1610 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
1611 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
1613 if (!netif_running(dev))
1616 if (netif_msg_intr(sky2))
1617 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
1618 sky2->netdev->name, istatus, phystat);
1620 if (istatus & PHY_M_IS_AN_COMPL) {
1621 if (sky2_autoneg_done(sky2, phystat) == 0)
1626 if (istatus & PHY_M_IS_LSP_CHANGE)
1627 sky2->speed = sky2_phy_speed(hw, phystat);
1629 if (istatus & PHY_M_IS_DUP_CHANGE)
1631 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1633 if (istatus & PHY_M_IS_LST_CHANGE) {
1634 if (phystat & PHY_M_PS_LINK_UP)
1637 sky2_link_down(sky2);
1640 spin_unlock(&sky2->phy_lock);
1644 /* Transmit timeout is only called if we are running, carries is up
1645 * and tx queue is full (stopped).
1647 static void sky2_tx_timeout(struct net_device *dev)
1649 struct sky2_port *sky2 = netdev_priv(dev);
1650 struct sky2_hw *hw = sky2->hw;
1651 unsigned txq = txqaddr[sky2->port];
1654 if (netif_msg_timer(sky2))
1655 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
1657 report = sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX);
1658 done = sky2_read16(hw, Q_ADDR(txq, Q_DONE));
1660 printk(KERN_DEBUG PFX "%s: transmit ring %u .. %u report=%u done=%u\n",
1662 sky2->tx_cons, sky2->tx_prod, report, done);
1664 if (report != done) {
1665 printk(KERN_INFO PFX "status burst pending (irq moderation?)\n");
1667 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
1668 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
1669 } else if (report != sky2->tx_cons) {
1670 printk(KERN_INFO PFX "status report lost?\n");
1672 spin_lock_bh(&sky2->tx_lock);
1673 sky2_tx_complete(sky2, report);
1674 spin_unlock_bh(&sky2->tx_lock);
1676 printk(KERN_INFO PFX "hardware hung? flushing\n");
1678 sky2_write32(hw, Q_ADDR(txq, Q_CSR), BMU_STOP);
1679 sky2_write32(hw, Y2_QADDR(txq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1681 sky2_tx_clean(sky2);
1684 sky2_prefetch_init(hw, txq, sky2->tx_le_map, TX_RING_SIZE - 1);
1689 #define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
1690 /* Want receive buffer size to be multiple of 64 bits
1691 * and incl room for vlan and truncation
1693 static inline unsigned sky2_buf_size(int mtu)
1695 return roundup(mtu + ETH_HLEN + VLAN_HLEN, 8) + 8;
1698 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
1700 struct sky2_port *sky2 = netdev_priv(dev);
1701 struct sky2_hw *hw = sky2->hw;
1706 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
1709 if (hw->chip_id == CHIP_ID_YUKON_EC_U && new_mtu > ETH_DATA_LEN)
1712 if (!netif_running(dev)) {
1717 imask = sky2_read32(hw, B0_IMSK);
1718 sky2_write32(hw, B0_IMSK, 0);
1720 dev->trans_start = jiffies; /* prevent tx timeout */
1721 netif_stop_queue(dev);
1722 netif_poll_disable(hw->dev[0]);
1724 synchronize_irq(hw->pdev->irq);
1726 ctl = gma_read16(hw, sky2->port, GM_GP_CTRL);
1727 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
1729 sky2_rx_clean(sky2);
1732 sky2->rx_bufsize = sky2_buf_size(new_mtu);
1733 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
1734 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
1736 if (dev->mtu > ETH_DATA_LEN)
1737 mode |= GM_SMOD_JUMBO_ENA;
1739 gma_write16(hw, sky2->port, GM_SERIAL_MODE, mode);
1741 sky2_write8(hw, RB_ADDR(rxqaddr[sky2->port], RB_CTRL), RB_ENA_OP_MD);
1743 err = sky2_rx_start(sky2);
1744 sky2_write32(hw, B0_IMSK, imask);
1749 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl);
1751 netif_poll_enable(hw->dev[0]);
1752 netif_wake_queue(dev);
1759 * Receive one packet.
1760 * For small packets or errors, just reuse existing skb.
1761 * For larger packets, get new buffer.
1763 static struct sk_buff *sky2_receive(struct sky2_port *sky2,
1764 u16 length, u32 status)
1766 struct ring_info *re = sky2->rx_ring + sky2->rx_next;
1767 struct sk_buff *skb = NULL;
1769 if (unlikely(netif_msg_rx_status(sky2)))
1770 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
1771 sky2->netdev->name, sky2->rx_next, status, length);
1773 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
1774 prefetch(sky2->rx_ring + sky2->rx_next);
1776 if (status & GMR_FS_ANY_ERR)
1779 if (!(status & GMR_FS_RX_OK))
1782 if (length > sky2->netdev->mtu + ETH_HLEN)
1785 if (length < copybreak) {
1786 skb = alloc_skb(length + 2, GFP_ATOMIC);
1790 skb_reserve(skb, 2);
1791 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->mapaddr,
1792 length, PCI_DMA_FROMDEVICE);
1793 memcpy(skb->data, re->skb->data, length);
1794 skb->ip_summed = re->skb->ip_summed;
1795 skb->csum = re->skb->csum;
1796 pci_dma_sync_single_for_device(sky2->hw->pdev, re->mapaddr,
1797 length, PCI_DMA_FROMDEVICE);
1799 struct sk_buff *nskb;
1801 nskb = sky2_alloc_skb(sky2->rx_bufsize, GFP_ATOMIC);
1807 pci_unmap_single(sky2->hw->pdev, re->mapaddr,
1808 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
1809 prefetch(skb->data);
1811 re->mapaddr = pci_map_single(sky2->hw->pdev, nskb->data,
1812 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
1815 skb_put(skb, length);
1817 re->skb->ip_summed = CHECKSUM_NONE;
1818 sky2_rx_add(sky2, re->mapaddr);
1820 /* Tell receiver about new buffers. */
1821 sky2_put_idx(sky2->hw, rxqaddr[sky2->port], sky2->rx_put);
1826 ++sky2->net_stats.rx_over_errors;
1830 ++sky2->net_stats.rx_errors;
1832 if (netif_msg_rx_err(sky2) && net_ratelimit())
1833 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
1834 sky2->netdev->name, status, length);
1836 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
1837 sky2->net_stats.rx_length_errors++;
1838 if (status & GMR_FS_FRAGMENT)
1839 sky2->net_stats.rx_frame_errors++;
1840 if (status & GMR_FS_CRC_ERR)
1841 sky2->net_stats.rx_crc_errors++;
1842 if (status & GMR_FS_RX_FF_OV)
1843 sky2->net_stats.rx_fifo_errors++;
1848 /* Transmit complete */
1849 static inline void sky2_tx_done(struct net_device *dev, u16 last)
1851 struct sky2_port *sky2 = netdev_priv(dev);
1853 if (netif_running(dev)) {
1854 spin_lock(&sky2->tx_lock);
1855 sky2_tx_complete(sky2, last);
1856 spin_unlock(&sky2->tx_lock);
1860 /* Process status response ring */
1861 static int sky2_status_intr(struct sky2_hw *hw, int to_do)
1868 struct sky2_status_le *le = hw->st_le + hw->st_idx;
1869 struct net_device *dev;
1870 struct sky2_port *sky2;
1871 struct sk_buff *skb;
1876 opcode = le->opcode;
1879 opcode &= ~HW_OWNER;
1881 hw->st_idx = (hw->st_idx + 1) % STATUS_RING_SIZE;
1886 dev = hw->dev[link];
1888 sky2 = netdev_priv(dev);
1889 length = le->length;
1890 status = le->status;
1894 skb = sky2_receive(sky2, length, status);
1899 skb->protocol = eth_type_trans(skb, dev);
1900 dev->last_rx = jiffies;
1902 #ifdef SKY2_VLAN_TAG_USED
1903 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
1904 vlan_hwaccel_receive_skb(skb,
1906 be16_to_cpu(sky2->rx_tag));
1909 netif_receive_skb(skb);
1911 if (++work_done >= to_do)
1915 #ifdef SKY2_VLAN_TAG_USED
1917 sky2->rx_tag = length;
1921 sky2->rx_tag = length;
1925 skb = sky2->rx_ring[sky2->rx_next].skb;
1926 skb->ip_summed = CHECKSUM_HW;
1927 skb->csum = le16_to_cpu(status);
1931 /* TX index reports status for both ports */
1932 sky2_tx_done(hw->dev[0], status & 0xffff);
1934 sky2_tx_done(hw->dev[1],
1935 ((status >> 24) & 0xff)
1936 | (u16)(length & 0xf) << 8);
1940 if (net_ratelimit())
1941 printk(KERN_WARNING PFX
1942 "unknown status opcode 0x%x\n", opcode);
1951 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
1953 struct net_device *dev = hw->dev[port];
1955 if (net_ratelimit())
1956 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
1959 if (status & Y2_IS_PAR_RD1) {
1960 if (net_ratelimit())
1961 printk(KERN_ERR PFX "%s: ram data read parity error\n",
1964 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
1967 if (status & Y2_IS_PAR_WR1) {
1968 if (net_ratelimit())
1969 printk(KERN_ERR PFX "%s: ram data write parity error\n",
1972 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
1975 if (status & Y2_IS_PAR_MAC1) {
1976 if (net_ratelimit())
1977 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
1978 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
1981 if (status & Y2_IS_PAR_RX1) {
1982 if (net_ratelimit())
1983 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
1984 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
1987 if (status & Y2_IS_TCP_TXA1) {
1988 if (net_ratelimit())
1989 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
1991 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
1995 static void sky2_hw_intr(struct sky2_hw *hw)
1997 u32 status = sky2_read32(hw, B0_HWE_ISRC);
1999 if (status & Y2_IS_TIST_OV)
2000 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2002 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2005 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2006 if (net_ratelimit())
2007 printk(KERN_ERR PFX "%s: pci hw error (0x%x)\n",
2008 pci_name(hw->pdev), pci_err);
2010 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2011 sky2_pci_write16(hw, PCI_STATUS,
2012 pci_err | PCI_STATUS_ERROR_BITS);
2013 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2016 if (status & Y2_IS_PCI_EXP) {
2017 /* PCI-Express uncorrectable Error occurred */
2020 pex_err = sky2_pci_read32(hw, PEX_UNC_ERR_STAT);
2022 if (net_ratelimit())
2023 printk(KERN_ERR PFX "%s: pci express error (0x%x)\n",
2024 pci_name(hw->pdev), pex_err);
2026 /* clear the interrupt */
2027 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2028 sky2_pci_write32(hw, PEX_UNC_ERR_STAT,
2030 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2032 if (pex_err & PEX_FATAL_ERRORS) {
2033 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2034 hwmsk &= ~Y2_IS_PCI_EXP;
2035 sky2_write32(hw, B0_HWE_IMSK, hwmsk);
2039 if (status & Y2_HWE_L1_MASK)
2040 sky2_hw_error(hw, 0, status);
2042 if (status & Y2_HWE_L1_MASK)
2043 sky2_hw_error(hw, 1, status);
2046 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2048 struct net_device *dev = hw->dev[port];
2049 struct sky2_port *sky2 = netdev_priv(dev);
2050 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2052 if (netif_msg_intr(sky2))
2053 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2056 if (status & GM_IS_RX_FF_OR) {
2057 ++sky2->net_stats.rx_fifo_errors;
2058 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2061 if (status & GM_IS_TX_FF_UR) {
2062 ++sky2->net_stats.tx_fifo_errors;
2063 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2067 /* This should never happen it is a fatal situation */
2068 static void sky2_descriptor_error(struct sky2_hw *hw, unsigned port,
2069 const char *rxtx, u32 mask)
2071 struct net_device *dev = hw->dev[port];
2072 struct sky2_port *sky2 = netdev_priv(dev);
2075 printk(KERN_ERR PFX "%s: %s descriptor error (hardware problem)\n",
2076 dev ? dev->name : "<not registered>", rxtx);
2078 imask = sky2_read32(hw, B0_IMSK);
2080 sky2_write32(hw, B0_IMSK, imask);
2083 spin_lock(&sky2->phy_lock);
2084 sky2_link_down(sky2);
2085 spin_unlock(&sky2->phy_lock);
2089 /* If idle then force a fake soft NAPI poll once a second
2090 * to work around cases where sharing an edge triggered interrupt.
2092 static void sky2_idle(unsigned long arg)
2094 struct net_device *dev = (struct net_device *) arg;
2096 local_irq_disable();
2097 if (__netif_rx_schedule_prep(dev))
2098 __netif_rx_schedule(dev);
2103 static int sky2_poll(struct net_device *dev0, int *budget)
2105 struct sky2_hw *hw = ((struct sky2_port *) netdev_priv(dev0))->hw;
2106 int work_limit = min(dev0->quota, *budget);
2108 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2111 if (unlikely(status & ~Y2_IS_STAT_BMU)) {
2112 if (status & Y2_IS_HW_ERR)
2115 if (status & Y2_IS_IRQ_PHY1)
2116 sky2_phy_intr(hw, 0);
2118 if (status & Y2_IS_IRQ_PHY2)
2119 sky2_phy_intr(hw, 1);
2121 if (status & Y2_IS_IRQ_MAC1)
2122 sky2_mac_intr(hw, 0);
2124 if (status & Y2_IS_IRQ_MAC2)
2125 sky2_mac_intr(hw, 1);
2127 if (status & Y2_IS_CHK_RX1)
2128 sky2_descriptor_error(hw, 0, "receive", Y2_IS_CHK_RX1);
2130 if (status & Y2_IS_CHK_RX2)
2131 sky2_descriptor_error(hw, 1, "receive", Y2_IS_CHK_RX2);
2133 if (status & Y2_IS_CHK_TXA1)
2134 sky2_descriptor_error(hw, 0, "transmit", Y2_IS_CHK_TXA1);
2136 if (status & Y2_IS_CHK_TXA2)
2137 sky2_descriptor_error(hw, 1, "transmit", Y2_IS_CHK_TXA2);
2140 if (status & Y2_IS_STAT_BMU) {
2141 work_done += sky2_status_intr(hw, work_limit - work_done);
2142 *budget -= work_done;
2143 dev0->quota -= work_done;
2145 if (work_done >= work_limit)
2148 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2151 mod_timer(&hw->idle_timer, jiffies + HZ);
2153 local_irq_disable();
2154 __netif_rx_complete(dev0);
2156 status = sky2_read32(hw, B0_Y2_SP_LISR);
2158 if (unlikely(status)) {
2159 /* More work pending, try and keep going */
2160 if (__netif_rx_schedule_prep(dev0)) {
2161 __netif_rx_reschedule(dev0, work_done);
2162 status = sky2_read32(hw, B0_Y2_SP_EISR);
2172 static irqreturn_t sky2_intr(int irq, void *dev_id, struct pt_regs *regs)
2174 struct sky2_hw *hw = dev_id;
2175 struct net_device *dev0 = hw->dev[0];
2178 /* Reading this mask interrupts as side effect */
2179 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2180 if (status == 0 || status == ~0)
2183 prefetch(&hw->st_le[hw->st_idx]);
2184 if (likely(__netif_rx_schedule_prep(dev0)))
2185 __netif_rx_schedule(dev0);
2190 #ifdef CONFIG_NET_POLL_CONTROLLER
2191 static void sky2_netpoll(struct net_device *dev)
2193 struct sky2_port *sky2 = netdev_priv(dev);
2195 sky2_intr(sky2->hw->pdev->irq, sky2->hw, NULL);
2199 /* Chip internal frequency for clock calculations */
2200 static inline u32 sky2_mhz(const struct sky2_hw *hw)
2202 switch (hw->chip_id) {
2203 case CHIP_ID_YUKON_EC:
2204 case CHIP_ID_YUKON_EC_U:
2205 return 125; /* 125 Mhz */
2206 case CHIP_ID_YUKON_FE:
2207 return 100; /* 100 Mhz */
2208 default: /* YUKON_XL */
2209 return 156; /* 156 Mhz */
2213 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2215 return sky2_mhz(hw) * us;
2218 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2220 return clk / sky2_mhz(hw);
2224 static int sky2_reset(struct sky2_hw *hw)
2230 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2232 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2233 if (hw->chip_id < CHIP_ID_YUKON_XL || hw->chip_id > CHIP_ID_YUKON_FE) {
2234 printk(KERN_ERR PFX "%s: unsupported chip type 0x%x\n",
2235 pci_name(hw->pdev), hw->chip_id);
2239 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2241 /* This rev is really old, and requires untested workarounds */
2242 if (hw->chip_id == CHIP_ID_YUKON_EC && hw->chip_rev == CHIP_REV_YU_EC_A1) {
2243 printk(KERN_ERR PFX "%s: unsupported revision Yukon-%s (0x%x) rev %d\n",
2244 pci_name(hw->pdev), yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
2245 hw->chip_id, hw->chip_rev);
2249 /* This chip is new and not tested yet */
2250 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
2251 pr_info(PFX "%s: is a version of Yukon 2 chipset that has not been tested yet.\n",
2252 pci_name(hw->pdev));
2253 pr_info("Please report success/failure to maintainer <shemminger@osdl.org>\n");
2257 if (hw->chip_id <= CHIP_ID_YUKON_EC) {
2258 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2259 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2263 sky2_write8(hw, B0_CTST, CS_RST_SET);
2264 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2266 /* clear PCI errors, if any */
2267 status = sky2_pci_read16(hw, PCI_STATUS);
2269 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2270 sky2_pci_write16(hw, PCI_STATUS, status | PCI_STATUS_ERROR_BITS);
2273 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2275 /* clear any PEX errors */
2276 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
2277 sky2_pci_write32(hw, PEX_UNC_ERR_STAT, 0xffffffffUL);
2280 pmd_type = sky2_read8(hw, B2_PMD_TYP);
2281 hw->copper = !(pmd_type == 'L' || pmd_type == 'S');
2284 t8 = sky2_read8(hw, B2_Y2_HW_RES);
2285 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
2286 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2290 sky2_set_power_state(hw, PCI_D0);
2292 for (i = 0; i < hw->ports; i++) {
2293 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2294 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2297 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2299 /* Clear I2C IRQ noise */
2300 sky2_write32(hw, B2_I2C_IRQ, 1);
2302 /* turn off hardware timer (unused) */
2303 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2304 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
2306 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
2308 /* Turn off descriptor polling */
2309 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
2311 /* Turn off receive timestamp */
2312 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
2313 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2315 /* enable the Tx Arbiters */
2316 for (i = 0; i < hw->ports; i++)
2317 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
2319 /* Initialize ram interface */
2320 for (i = 0; i < hw->ports; i++) {
2321 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
2323 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
2324 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
2325 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
2326 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
2327 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
2328 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
2329 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
2330 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
2331 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
2332 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
2333 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
2334 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
2337 sky2_write32(hw, B0_HWE_IMSK, Y2_HWE_ALL_MASK);
2339 for (i = 0; i < hw->ports; i++)
2340 sky2_phy_reset(hw, i);
2342 memset(hw->st_le, 0, STATUS_LE_BYTES);
2345 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
2346 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
2348 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
2349 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
2351 /* Set the list last index */
2352 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
2354 sky2_write16(hw, STAT_TX_IDX_TH, 10);
2355 sky2_write8(hw, STAT_FIFO_WM, 16);
2357 /* set Status-FIFO ISR watermark */
2358 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
2359 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
2361 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
2363 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
2364 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
2365 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
2367 /* enable status unit */
2368 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
2370 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2371 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2372 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2377 static u32 sky2_supported_modes(const struct sky2_hw *hw)
2381 modes = SUPPORTED_10baseT_Half
2382 | SUPPORTED_10baseT_Full
2383 | SUPPORTED_100baseT_Half
2384 | SUPPORTED_100baseT_Full
2385 | SUPPORTED_Autoneg | SUPPORTED_TP;
2387 if (hw->chip_id != CHIP_ID_YUKON_FE)
2388 modes |= SUPPORTED_1000baseT_Half
2389 | SUPPORTED_1000baseT_Full;
2391 modes = SUPPORTED_1000baseT_Full | SUPPORTED_FIBRE
2392 | SUPPORTED_Autoneg;
2396 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2398 struct sky2_port *sky2 = netdev_priv(dev);
2399 struct sky2_hw *hw = sky2->hw;
2401 ecmd->transceiver = XCVR_INTERNAL;
2402 ecmd->supported = sky2_supported_modes(hw);
2403 ecmd->phy_address = PHY_ADDR_MARV;
2405 ecmd->supported = SUPPORTED_10baseT_Half
2406 | SUPPORTED_10baseT_Full
2407 | SUPPORTED_100baseT_Half
2408 | SUPPORTED_100baseT_Full
2409 | SUPPORTED_1000baseT_Half
2410 | SUPPORTED_1000baseT_Full
2411 | SUPPORTED_Autoneg | SUPPORTED_TP;
2412 ecmd->port = PORT_TP;
2414 ecmd->port = PORT_FIBRE;
2416 ecmd->advertising = sky2->advertising;
2417 ecmd->autoneg = sky2->autoneg;
2418 ecmd->speed = sky2->speed;
2419 ecmd->duplex = sky2->duplex;
2423 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2425 struct sky2_port *sky2 = netdev_priv(dev);
2426 const struct sky2_hw *hw = sky2->hw;
2427 u32 supported = sky2_supported_modes(hw);
2429 if (ecmd->autoneg == AUTONEG_ENABLE) {
2430 ecmd->advertising = supported;
2436 switch (ecmd->speed) {
2438 if (ecmd->duplex == DUPLEX_FULL)
2439 setting = SUPPORTED_1000baseT_Full;
2440 else if (ecmd->duplex == DUPLEX_HALF)
2441 setting = SUPPORTED_1000baseT_Half;
2446 if (ecmd->duplex == DUPLEX_FULL)
2447 setting = SUPPORTED_100baseT_Full;
2448 else if (ecmd->duplex == DUPLEX_HALF)
2449 setting = SUPPORTED_100baseT_Half;
2455 if (ecmd->duplex == DUPLEX_FULL)
2456 setting = SUPPORTED_10baseT_Full;
2457 else if (ecmd->duplex == DUPLEX_HALF)
2458 setting = SUPPORTED_10baseT_Half;
2466 if ((setting & supported) == 0)
2469 sky2->speed = ecmd->speed;
2470 sky2->duplex = ecmd->duplex;
2473 sky2->autoneg = ecmd->autoneg;
2474 sky2->advertising = ecmd->advertising;
2476 if (netif_running(dev))
2477 sky2_phy_reinit(sky2);
2482 static void sky2_get_drvinfo(struct net_device *dev,
2483 struct ethtool_drvinfo *info)
2485 struct sky2_port *sky2 = netdev_priv(dev);
2487 strcpy(info->driver, DRV_NAME);
2488 strcpy(info->version, DRV_VERSION);
2489 strcpy(info->fw_version, "N/A");
2490 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
2493 static const struct sky2_stat {
2494 char name[ETH_GSTRING_LEN];
2497 { "tx_bytes", GM_TXO_OK_HI },
2498 { "rx_bytes", GM_RXO_OK_HI },
2499 { "tx_broadcast", GM_TXF_BC_OK },
2500 { "rx_broadcast", GM_RXF_BC_OK },
2501 { "tx_multicast", GM_TXF_MC_OK },
2502 { "rx_multicast", GM_RXF_MC_OK },
2503 { "tx_unicast", GM_TXF_UC_OK },
2504 { "rx_unicast", GM_RXF_UC_OK },
2505 { "tx_mac_pause", GM_TXF_MPAUSE },
2506 { "rx_mac_pause", GM_RXF_MPAUSE },
2507 { "collisions", GM_TXF_COL },
2508 { "late_collision",GM_TXF_LAT_COL },
2509 { "aborted", GM_TXF_ABO_COL },
2510 { "single_collisions", GM_TXF_SNG_COL },
2511 { "multi_collisions", GM_TXF_MUL_COL },
2513 { "rx_short", GM_RXF_SHT },
2514 { "rx_runt", GM_RXE_FRAG },
2515 { "rx_64_byte_packets", GM_RXF_64B },
2516 { "rx_65_to_127_byte_packets", GM_RXF_127B },
2517 { "rx_128_to_255_byte_packets", GM_RXF_255B },
2518 { "rx_256_to_511_byte_packets", GM_RXF_511B },
2519 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
2520 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
2521 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
2522 { "rx_too_long", GM_RXF_LNG_ERR },
2523 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
2524 { "rx_jabber", GM_RXF_JAB_PKT },
2525 { "rx_fcs_error", GM_RXF_FCS_ERR },
2527 { "tx_64_byte_packets", GM_TXF_64B },
2528 { "tx_65_to_127_byte_packets", GM_TXF_127B },
2529 { "tx_128_to_255_byte_packets", GM_TXF_255B },
2530 { "tx_256_to_511_byte_packets", GM_TXF_511B },
2531 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
2532 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
2533 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
2534 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
2537 static u32 sky2_get_rx_csum(struct net_device *dev)
2539 struct sky2_port *sky2 = netdev_priv(dev);
2541 return sky2->rx_csum;
2544 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
2546 struct sky2_port *sky2 = netdev_priv(dev);
2548 sky2->rx_csum = data;
2550 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2551 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
2556 static u32 sky2_get_msglevel(struct net_device *netdev)
2558 struct sky2_port *sky2 = netdev_priv(netdev);
2559 return sky2->msg_enable;
2562 static int sky2_nway_reset(struct net_device *dev)
2564 struct sky2_port *sky2 = netdev_priv(dev);
2566 if (sky2->autoneg != AUTONEG_ENABLE)
2569 sky2_phy_reinit(sky2);
2574 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
2576 struct sky2_hw *hw = sky2->hw;
2577 unsigned port = sky2->port;
2580 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
2581 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
2582 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
2583 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
2585 for (i = 2; i < count; i++)
2586 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
2589 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
2591 struct sky2_port *sky2 = netdev_priv(netdev);
2592 sky2->msg_enable = value;
2595 static int sky2_get_stats_count(struct net_device *dev)
2597 return ARRAY_SIZE(sky2_stats);
2600 static void sky2_get_ethtool_stats(struct net_device *dev,
2601 struct ethtool_stats *stats, u64 * data)
2603 struct sky2_port *sky2 = netdev_priv(dev);
2605 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
2608 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
2612 switch (stringset) {
2614 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
2615 memcpy(data + i * ETH_GSTRING_LEN,
2616 sky2_stats[i].name, ETH_GSTRING_LEN);
2621 /* Use hardware MIB variables for critical path statistics and
2622 * transmit feedback not reported at interrupt.
2623 * Other errors are accounted for in interrupt handler.
2625 static struct net_device_stats *sky2_get_stats(struct net_device *dev)
2627 struct sky2_port *sky2 = netdev_priv(dev);
2630 sky2_phy_stats(sky2, data, ARRAY_SIZE(data));
2632 sky2->net_stats.tx_bytes = data[0];
2633 sky2->net_stats.rx_bytes = data[1];
2634 sky2->net_stats.tx_packets = data[2] + data[4] + data[6];
2635 sky2->net_stats.rx_packets = data[3] + data[5] + data[7];
2636 sky2->net_stats.multicast = data[3] + data[5];
2637 sky2->net_stats.collisions = data[10];
2638 sky2->net_stats.tx_aborted_errors = data[12];
2640 return &sky2->net_stats;
2643 static int sky2_set_mac_address(struct net_device *dev, void *p)
2645 struct sky2_port *sky2 = netdev_priv(dev);
2646 struct sky2_hw *hw = sky2->hw;
2647 unsigned port = sky2->port;
2648 const struct sockaddr *addr = p;
2650 if (!is_valid_ether_addr(addr->sa_data))
2651 return -EADDRNOTAVAIL;
2653 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
2654 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
2655 dev->dev_addr, ETH_ALEN);
2656 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
2657 dev->dev_addr, ETH_ALEN);
2659 /* virtual address for data */
2660 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
2662 /* physical address: used for pause frames */
2663 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
2668 static void sky2_set_multicast(struct net_device *dev)
2670 struct sky2_port *sky2 = netdev_priv(dev);
2671 struct sky2_hw *hw = sky2->hw;
2672 unsigned port = sky2->port;
2673 struct dev_mc_list *list = dev->mc_list;
2677 memset(filter, 0, sizeof(filter));
2679 reg = gma_read16(hw, port, GM_RX_CTRL);
2680 reg |= GM_RXCR_UCF_ENA;
2682 if (dev->flags & IFF_PROMISC) /* promiscuous */
2683 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
2684 else if ((dev->flags & IFF_ALLMULTI) || dev->mc_count > 16) /* all multicast */
2685 memset(filter, 0xff, sizeof(filter));
2686 else if (dev->mc_count == 0) /* no multicast */
2687 reg &= ~GM_RXCR_MCF_ENA;
2690 reg |= GM_RXCR_MCF_ENA;
2692 for (i = 0; list && i < dev->mc_count; i++, list = list->next) {
2693 u32 bit = ether_crc(ETH_ALEN, list->dmi_addr) & 0x3f;
2694 filter[bit / 8] |= 1 << (bit % 8);
2698 gma_write16(hw, port, GM_MC_ADDR_H1,
2699 (u16) filter[0] | ((u16) filter[1] << 8));
2700 gma_write16(hw, port, GM_MC_ADDR_H2,
2701 (u16) filter[2] | ((u16) filter[3] << 8));
2702 gma_write16(hw, port, GM_MC_ADDR_H3,
2703 (u16) filter[4] | ((u16) filter[5] << 8));
2704 gma_write16(hw, port, GM_MC_ADDR_H4,
2705 (u16) filter[6] | ((u16) filter[7] << 8));
2707 gma_write16(hw, port, GM_RX_CTRL, reg);
2710 /* Can have one global because blinking is controlled by
2711 * ethtool and that is always under RTNL mutex
2713 static void sky2_led(struct sky2_hw *hw, unsigned port, int on)
2717 switch (hw->chip_id) {
2718 case CHIP_ID_YUKON_XL:
2719 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2720 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2721 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
2722 on ? (PHY_M_LEDC_LOS_CTRL(1) |
2723 PHY_M_LEDC_INIT_CTRL(7) |
2724 PHY_M_LEDC_STA1_CTRL(7) |
2725 PHY_M_LEDC_STA0_CTRL(7))
2728 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2732 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
2733 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
2734 on ? PHY_M_LED_MO_DUP(MO_LED_ON) |
2735 PHY_M_LED_MO_10(MO_LED_ON) |
2736 PHY_M_LED_MO_100(MO_LED_ON) |
2737 PHY_M_LED_MO_1000(MO_LED_ON) |
2738 PHY_M_LED_MO_RX(MO_LED_ON)
2739 : PHY_M_LED_MO_DUP(MO_LED_OFF) |
2740 PHY_M_LED_MO_10(MO_LED_OFF) |
2741 PHY_M_LED_MO_100(MO_LED_OFF) |
2742 PHY_M_LED_MO_1000(MO_LED_OFF) |
2743 PHY_M_LED_MO_RX(MO_LED_OFF));
2748 /* blink LED's for finding board */
2749 static int sky2_phys_id(struct net_device *dev, u32 data)
2751 struct sky2_port *sky2 = netdev_priv(dev);
2752 struct sky2_hw *hw = sky2->hw;
2753 unsigned port = sky2->port;
2754 u16 ledctrl, ledover = 0;
2759 if (!data || data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ))
2760 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT);
2764 /* save initial values */
2765 spin_lock_bh(&sky2->phy_lock);
2766 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2767 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2768 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2769 ledctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
2770 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2772 ledctrl = gm_phy_read(hw, port, PHY_MARV_LED_CTRL);
2773 ledover = gm_phy_read(hw, port, PHY_MARV_LED_OVER);
2777 while (!interrupted && ms > 0) {
2778 sky2_led(hw, port, onoff);
2781 spin_unlock_bh(&sky2->phy_lock);
2782 interrupted = msleep_interruptible(250);
2783 spin_lock_bh(&sky2->phy_lock);
2788 /* resume regularly scheduled programming */
2789 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2790 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2791 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2792 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ledctrl);
2793 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2795 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
2796 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
2798 spin_unlock_bh(&sky2->phy_lock);
2803 static void sky2_get_pauseparam(struct net_device *dev,
2804 struct ethtool_pauseparam *ecmd)
2806 struct sky2_port *sky2 = netdev_priv(dev);
2808 ecmd->tx_pause = sky2->tx_pause;
2809 ecmd->rx_pause = sky2->rx_pause;
2810 ecmd->autoneg = sky2->autoneg;
2813 static int sky2_set_pauseparam(struct net_device *dev,
2814 struct ethtool_pauseparam *ecmd)
2816 struct sky2_port *sky2 = netdev_priv(dev);
2819 sky2->autoneg = ecmd->autoneg;
2820 sky2->tx_pause = ecmd->tx_pause != 0;
2821 sky2->rx_pause = ecmd->rx_pause != 0;
2823 sky2_phy_reinit(sky2);
2828 static int sky2_get_coalesce(struct net_device *dev,
2829 struct ethtool_coalesce *ecmd)
2831 struct sky2_port *sky2 = netdev_priv(dev);
2832 struct sky2_hw *hw = sky2->hw;
2834 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
2835 ecmd->tx_coalesce_usecs = 0;
2837 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
2838 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
2840 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
2842 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
2843 ecmd->rx_coalesce_usecs = 0;
2845 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
2846 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
2848 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
2850 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
2851 ecmd->rx_coalesce_usecs_irq = 0;
2853 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
2854 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
2857 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
2862 /* Note: this affect both ports */
2863 static int sky2_set_coalesce(struct net_device *dev,
2864 struct ethtool_coalesce *ecmd)
2866 struct sky2_port *sky2 = netdev_priv(dev);
2867 struct sky2_hw *hw = sky2->hw;
2868 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
2870 if (ecmd->tx_coalesce_usecs > tmax ||
2871 ecmd->rx_coalesce_usecs > tmax ||
2872 ecmd->rx_coalesce_usecs_irq > tmax)
2875 if (ecmd->tx_max_coalesced_frames >= TX_RING_SIZE-1)
2877 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
2879 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
2882 if (ecmd->tx_coalesce_usecs == 0)
2883 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
2885 sky2_write32(hw, STAT_TX_TIMER_INI,
2886 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
2887 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2889 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
2891 if (ecmd->rx_coalesce_usecs == 0)
2892 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
2894 sky2_write32(hw, STAT_LEV_TIMER_INI,
2895 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
2896 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2898 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
2900 if (ecmd->rx_coalesce_usecs_irq == 0)
2901 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
2903 sky2_write32(hw, STAT_ISR_TIMER_INI,
2904 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
2905 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2907 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
2911 static void sky2_get_ringparam(struct net_device *dev,
2912 struct ethtool_ringparam *ering)
2914 struct sky2_port *sky2 = netdev_priv(dev);
2916 ering->rx_max_pending = RX_MAX_PENDING;
2917 ering->rx_mini_max_pending = 0;
2918 ering->rx_jumbo_max_pending = 0;
2919 ering->tx_max_pending = TX_RING_SIZE - 1;
2921 ering->rx_pending = sky2->rx_pending;
2922 ering->rx_mini_pending = 0;
2923 ering->rx_jumbo_pending = 0;
2924 ering->tx_pending = sky2->tx_pending;
2927 static int sky2_set_ringparam(struct net_device *dev,
2928 struct ethtool_ringparam *ering)
2930 struct sky2_port *sky2 = netdev_priv(dev);
2933 if (ering->rx_pending > RX_MAX_PENDING ||
2934 ering->rx_pending < 8 ||
2935 ering->tx_pending < MAX_SKB_TX_LE ||
2936 ering->tx_pending > TX_RING_SIZE - 1)
2939 if (netif_running(dev))
2942 sky2->rx_pending = ering->rx_pending;
2943 sky2->tx_pending = ering->tx_pending;
2945 if (netif_running(dev)) {
2950 sky2_set_multicast(dev);
2956 static int sky2_get_regs_len(struct net_device *dev)
2962 * Returns copy of control register region
2963 * Note: access to the RAM address register set will cause timeouts.
2965 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
2968 const struct sky2_port *sky2 = netdev_priv(dev);
2969 const void __iomem *io = sky2->hw->regs;
2971 BUG_ON(regs->len < B3_RI_WTO_R1);
2973 memset(p, 0, regs->len);
2975 memcpy_fromio(p, io, B3_RAM_ADDR);
2977 memcpy_fromio(p + B3_RI_WTO_R1,
2979 regs->len - B3_RI_WTO_R1);
2982 static struct ethtool_ops sky2_ethtool_ops = {
2983 .get_settings = sky2_get_settings,
2984 .set_settings = sky2_set_settings,
2985 .get_drvinfo = sky2_get_drvinfo,
2986 .get_msglevel = sky2_get_msglevel,
2987 .set_msglevel = sky2_set_msglevel,
2988 .nway_reset = sky2_nway_reset,
2989 .get_regs_len = sky2_get_regs_len,
2990 .get_regs = sky2_get_regs,
2991 .get_link = ethtool_op_get_link,
2992 .get_sg = ethtool_op_get_sg,
2993 .set_sg = ethtool_op_set_sg,
2994 .get_tx_csum = ethtool_op_get_tx_csum,
2995 .set_tx_csum = ethtool_op_set_tx_csum,
2996 .get_tso = ethtool_op_get_tso,
2997 .set_tso = ethtool_op_set_tso,
2998 .get_rx_csum = sky2_get_rx_csum,
2999 .set_rx_csum = sky2_set_rx_csum,
3000 .get_strings = sky2_get_strings,
3001 .get_coalesce = sky2_get_coalesce,
3002 .set_coalesce = sky2_set_coalesce,
3003 .get_ringparam = sky2_get_ringparam,
3004 .set_ringparam = sky2_set_ringparam,
3005 .get_pauseparam = sky2_get_pauseparam,
3006 .set_pauseparam = sky2_set_pauseparam,
3007 .phys_id = sky2_phys_id,
3008 .get_stats_count = sky2_get_stats_count,
3009 .get_ethtool_stats = sky2_get_ethtool_stats,
3010 .get_perm_addr = ethtool_op_get_perm_addr,
3013 /* Initialize network device */
3014 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
3015 unsigned port, int highmem)
3017 struct sky2_port *sky2;
3018 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
3021 printk(KERN_ERR "sky2 etherdev alloc failed");
3025 SET_MODULE_OWNER(dev);
3026 SET_NETDEV_DEV(dev, &hw->pdev->dev);
3027 dev->irq = hw->pdev->irq;
3028 dev->open = sky2_up;
3029 dev->stop = sky2_down;
3030 dev->do_ioctl = sky2_ioctl;
3031 dev->hard_start_xmit = sky2_xmit_frame;
3032 dev->get_stats = sky2_get_stats;
3033 dev->set_multicast_list = sky2_set_multicast;
3034 dev->set_mac_address = sky2_set_mac_address;
3035 dev->change_mtu = sky2_change_mtu;
3036 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
3037 dev->tx_timeout = sky2_tx_timeout;
3038 dev->watchdog_timeo = TX_WATCHDOG;
3040 dev->poll = sky2_poll;
3041 dev->weight = NAPI_WEIGHT;
3042 #ifdef CONFIG_NET_POLL_CONTROLLER
3043 dev->poll_controller = sky2_netpoll;
3046 sky2 = netdev_priv(dev);
3049 sky2->msg_enable = netif_msg_init(debug, default_msg);
3051 spin_lock_init(&sky2->tx_lock);
3052 /* Auto speed and flow control */
3053 sky2->autoneg = AUTONEG_ENABLE;
3058 sky2->advertising = sky2_supported_modes(hw);
3060 /* Receive checksum disabled for Yukon XL
3061 * because of observed problems with incorrect
3062 * values when multiple packets are received in one interrupt
3064 sky2->rx_csum = (hw->chip_id != CHIP_ID_YUKON_XL);
3066 spin_lock_init(&sky2->phy_lock);
3067 sky2->tx_pending = TX_DEF_PENDING;
3068 sky2->rx_pending = RX_DEF_PENDING;
3069 sky2->rx_bufsize = sky2_buf_size(ETH_DATA_LEN);
3071 hw->dev[port] = dev;
3075 dev->features |= NETIF_F_LLTX;
3076 if (hw->chip_id != CHIP_ID_YUKON_EC_U)
3077 dev->features |= NETIF_F_TSO;
3079 dev->features |= NETIF_F_HIGHDMA;
3080 dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
3082 #ifdef SKY2_VLAN_TAG_USED
3083 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
3084 dev->vlan_rx_register = sky2_vlan_rx_register;
3085 dev->vlan_rx_kill_vid = sky2_vlan_rx_kill_vid;
3088 /* read the mac address */
3089 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
3090 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
3092 /* device is off until link detection */
3093 netif_carrier_off(dev);
3094 netif_stop_queue(dev);
3099 static void __devinit sky2_show_addr(struct net_device *dev)
3101 const struct sky2_port *sky2 = netdev_priv(dev);
3103 if (netif_msg_probe(sky2))
3104 printk(KERN_INFO PFX "%s: addr %02x:%02x:%02x:%02x:%02x:%02x\n",
3106 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
3107 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
3110 /* Handle software interrupt used during MSI test */
3111 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id,
3112 struct pt_regs *regs)
3114 struct sky2_hw *hw = dev_id;
3115 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
3120 if (status & Y2_IS_IRQ_SW) {
3121 hw->msi_detected = 1;
3122 wake_up(&hw->msi_wait);
3123 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3125 sky2_write32(hw, B0_Y2_SP_ICR, 2);
3130 /* Test interrupt path by forcing a a software IRQ */
3131 static int __devinit sky2_test_msi(struct sky2_hw *hw)
3133 struct pci_dev *pdev = hw->pdev;
3136 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
3138 err = request_irq(pdev->irq, sky2_test_intr, SA_SHIRQ, DRV_NAME, hw);
3140 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3141 pci_name(pdev), pdev->irq);
3145 init_waitqueue_head (&hw->msi_wait);
3147 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
3150 wait_event_timeout(hw->msi_wait, hw->msi_detected, HZ/10);
3152 if (!hw->msi_detected) {
3153 /* MSI test failed, go back to INTx mode */
3154 printk(KERN_WARNING PFX "%s: No interrupt was generated using MSI, "
3155 "switching to INTx mode. Please report this failure to "
3156 "the PCI maintainer and include system chipset information.\n",
3160 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3163 sky2_write32(hw, B0_IMSK, 0);
3165 free_irq(pdev->irq, hw);
3170 static int __devinit sky2_probe(struct pci_dev *pdev,
3171 const struct pci_device_id *ent)
3173 struct net_device *dev, *dev1 = NULL;
3175 int err, pm_cap, using_dac = 0;
3177 err = pci_enable_device(pdev);
3179 printk(KERN_ERR PFX "%s cannot enable PCI device\n",
3184 err = pci_request_regions(pdev, DRV_NAME);
3186 printk(KERN_ERR PFX "%s cannot obtain PCI resources\n",
3191 pci_set_master(pdev);
3193 /* Find power-management capability. */
3194 pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
3196 printk(KERN_ERR PFX "Cannot find PowerManagement capability, "
3199 goto err_out_free_regions;
3202 if (sizeof(dma_addr_t) > sizeof(u32) &&
3203 !(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
3205 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3207 printk(KERN_ERR PFX "%s unable to obtain 64 bit DMA "
3208 "for consistent allocations\n", pci_name(pdev));
3209 goto err_out_free_regions;
3213 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
3215 printk(KERN_ERR PFX "%s no usable DMA configuration\n",
3217 goto err_out_free_regions;
3222 hw = kzalloc(sizeof(*hw), GFP_KERNEL);
3224 printk(KERN_ERR PFX "%s: cannot allocate hardware struct\n",
3226 goto err_out_free_regions;
3231 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
3233 printk(KERN_ERR PFX "%s: cannot map device registers\n",
3235 goto err_out_free_hw;
3237 hw->pm_cap = pm_cap;
3240 /* byte swap descriptors in hardware */
3244 reg = sky2_pci_read32(hw, PCI_DEV_REG2);
3245 reg |= PCI_REV_DESC;
3246 sky2_pci_write32(hw, PCI_DEV_REG2, reg);
3250 /* ring for status responses */
3251 hw->st_le = pci_alloc_consistent(hw->pdev, STATUS_LE_BYTES,
3254 goto err_out_iounmap;
3256 err = sky2_reset(hw);
3258 goto err_out_iounmap;
3260 printk(KERN_INFO PFX "v%s addr 0x%lx irq %d Yukon-%s (0x%x) rev %d\n",
3261 DRV_VERSION, pci_resource_start(pdev, 0), pdev->irq,
3262 yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
3263 hw->chip_id, hw->chip_rev);
3265 dev = sky2_init_netdev(hw, 0, using_dac);
3267 goto err_out_free_pci;
3269 err = register_netdev(dev);
3271 printk(KERN_ERR PFX "%s: cannot register net device\n",
3273 goto err_out_free_netdev;
3276 sky2_show_addr(dev);
3278 if (hw->ports > 1 && (dev1 = sky2_init_netdev(hw, 1, using_dac))) {
3279 if (register_netdev(dev1) == 0)
3280 sky2_show_addr(dev1);
3282 /* Failure to register second port need not be fatal */
3283 printk(KERN_WARNING PFX
3284 "register of second port failed\n");
3290 if (!disable_msi && pci_enable_msi(pdev) == 0) {
3291 err = sky2_test_msi(hw);
3292 if (err == -EOPNOTSUPP)
3293 pci_disable_msi(pdev);
3295 goto err_out_unregister;
3298 err = request_irq(pdev->irq, sky2_intr, SA_SHIRQ, DRV_NAME, hw);
3300 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3301 pci_name(pdev), pdev->irq);
3302 goto err_out_unregister;
3305 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3307 setup_timer(&hw->idle_timer, sky2_idle, (unsigned long) dev);
3309 pci_set_drvdata(pdev, hw);
3314 pci_disable_msi(pdev);
3316 unregister_netdev(dev1);
3319 unregister_netdev(dev);
3320 err_out_free_netdev:
3323 sky2_write8(hw, B0_CTST, CS_RST_SET);
3324 pci_free_consistent(hw->pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3329 err_out_free_regions:
3330 pci_release_regions(pdev);
3331 pci_disable_device(pdev);
3336 static void __devexit sky2_remove(struct pci_dev *pdev)
3338 struct sky2_hw *hw = pci_get_drvdata(pdev);
3339 struct net_device *dev0, *dev1;
3344 del_timer_sync(&hw->idle_timer);
3346 sky2_write32(hw, B0_IMSK, 0);
3350 unregister_netdev(dev1);
3351 unregister_netdev(dev0);
3353 sky2_set_power_state(hw, PCI_D3hot);
3354 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
3355 sky2_write8(hw, B0_CTST, CS_RST_SET);
3356 sky2_read8(hw, B0_CTST);
3358 free_irq(pdev->irq, hw);
3359 pci_disable_msi(pdev);
3360 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3361 pci_release_regions(pdev);
3362 pci_disable_device(pdev);
3370 pci_set_drvdata(pdev, NULL);
3374 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
3376 struct sky2_hw *hw = pci_get_drvdata(pdev);
3379 for (i = 0; i < 2; i++) {
3380 struct net_device *dev = hw->dev[i];
3383 if (!netif_running(dev))
3387 netif_device_detach(dev);
3391 return sky2_set_power_state(hw, pci_choose_state(pdev, state));
3394 static int sky2_resume(struct pci_dev *pdev)
3396 struct sky2_hw *hw = pci_get_drvdata(pdev);
3399 pci_restore_state(pdev);
3400 pci_enable_wake(pdev, PCI_D0, 0);
3401 err = sky2_set_power_state(hw, PCI_D0);
3405 err = sky2_reset(hw);
3409 for (i = 0; i < 2; i++) {
3410 struct net_device *dev = hw->dev[i];
3411 if (dev && netif_running(dev)) {
3412 netif_device_attach(dev);
3415 printk(KERN_ERR PFX "%s: could not up: %d\n",
3427 static struct pci_driver sky2_driver = {
3429 .id_table = sky2_id_table,
3430 .probe = sky2_probe,
3431 .remove = __devexit_p(sky2_remove),
3433 .suspend = sky2_suspend,
3434 .resume = sky2_resume,
3438 static int __init sky2_init_module(void)
3440 return pci_register_driver(&sky2_driver);
3443 static void __exit sky2_cleanup_module(void)
3445 pci_unregister_driver(&sky2_driver);
3448 module_init(sky2_init_module);
3449 module_exit(sky2_cleanup_module);
3451 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
3452 MODULE_AUTHOR("Stephen Hemminger <shemminger@osdl.org>");
3453 MODULE_LICENSE("GPL");
3454 MODULE_VERSION(DRV_VERSION);