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[PATCH] 3c59x: fix networking for 10base2 NICs
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / sky2.c
blob68f9c206a6205d1e35398ff7cf72d62a4f2558c3
1 /*
2 * New driver for Marvell Yukon 2 chipset.
3 * Based on earlier sk98lin, and skge driver.
4 *
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.
8 *
9 * Copyright (C) 2005 Stephen Hemminger <shemminger@osdl.org>
10 *
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.
15 *
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.
20 *
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.
24 */
25
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>
36 #include <linux/ip.h>
37 #include <linux/tcp.h>
38 #include <linux/in.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>
44
45 #include <asm/irq.h>
46
47 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
48 #define SKY2_VLAN_TAG_USED 1
49 #endif
50
51 #include "sky2.h"
52
53 #define DRV_NAME "sky2"
54 #define DRV_VERSION "1.1"
55 #define PFX DRV_NAME " "
56
57 /*
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).
62 */
63
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
69
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)
74
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
81
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;
86
87 static int debug = -1; /* defaults above */
88 module_param(debug, int, 0);
89 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
90
91 static int copybreak __read_mostly = 256;
92 module_param(copybreak, int, 0);
93 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
94
95 static int disable_msi = 0;
96 module_param(disable_msi, int, 0);
97 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
98
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_DLINK, 0x4b00) },
103 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b01) },
104 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) },
105 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) },
106 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) },
107 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) },
108 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) },
109 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) },
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) },
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) },
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) },
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) },
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) },
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) },
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) },
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) },
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) },
119 { 0 }
120 };
121
122 MODULE_DEVICE_TABLE(pci, sky2_id_table);
123
124 /* Avoid conditionals by using array */
125 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
126 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
127
128 /* This driver supports yukon2 chipset only */
129 static const char *yukon2_name[] = {
130 "XL", /* 0xb3 */
131 "EC Ultra", /* 0xb4 */
132 "UNKNOWN", /* 0xb5 */
133 "EC", /* 0xb6 */
134 "FE", /* 0xb7 */
135 };
136
137 /* Access to external PHY */
138 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
139 {
140 int i;
141
142 gma_write16(hw, port, GM_SMI_DATA, val);
143 gma_write16(hw, port, GM_SMI_CTRL,
144 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
145
146 for (i = 0; i < PHY_RETRIES; i++) {
147 if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
148 return 0;
149 udelay(1);
150 }
151
152 printk(KERN_WARNING PFX "%s: phy write timeout\n", hw->dev[port]->name);
153 return -ETIMEDOUT;
154 }
155
156 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
157 {
158 int i;
159
160 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
161 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
162
163 for (i = 0; i < PHY_RETRIES; i++) {
164 if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL) {
165 *val = gma_read16(hw, port, GM_SMI_DATA);
166 return 0;
167 }
168
169 udelay(1);
170 }
171
172 return -ETIMEDOUT;
173 }
174
175 static u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
176 {
177 u16 v;
178
179 if (__gm_phy_read(hw, port, reg, &v) != 0)
180 printk(KERN_WARNING PFX "%s: phy read timeout\n", hw->dev[port]->name);
181 return v;
182 }
183
184 static int sky2_set_power_state(struct sky2_hw *hw, pci_power_t state)
185 {
186 u16 power_control;
187 u32 reg1;
188 int vaux;
189 int ret = 0;
190
191 pr_debug("sky2_set_power_state %d\n", state);
192 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
193
194 power_control = sky2_pci_read16(hw, hw->pm_cap + PCI_PM_PMC);
195 vaux = (sky2_read16(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
196 (power_control & PCI_PM_CAP_PME_D3cold);
197
198 power_control = sky2_pci_read16(hw, hw->pm_cap + PCI_PM_CTRL);
199
200 power_control |= PCI_PM_CTRL_PME_STATUS;
201 power_control &= ~(PCI_PM_CTRL_STATE_MASK);
202
203 switch (state) {
204 case PCI_D0:
205 /* switch power to VCC (WA for VAUX problem) */
206 sky2_write8(hw, B0_POWER_CTRL,
207 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
208
209 /* disable Core Clock Division, */
210 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
211
212 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
213 /* enable bits are inverted */
214 sky2_write8(hw, B2_Y2_CLK_GATE,
215 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
216 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
217 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
218 else
219 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
220
221 /* Turn off phy power saving */
222 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
223 reg1 &= ~(PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
224
225 /* looks like this XL is back asswards .. */
226 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1) {
227 reg1 |= PCI_Y2_PHY1_COMA;
228 if (hw->ports > 1)
229 reg1 |= PCI_Y2_PHY2_COMA;
230 }
231
232 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);
238 }
239
240 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
241
242 break;
243
244 case PCI_D3hot:
245 case PCI_D3cold:
246 /* Turn on phy power saving */
247 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
248 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
249 reg1 &= ~(PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
250 else
251 reg1 |= (PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
252 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
253
254 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
255 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
256 else
257 /* enable bits are inverted */
258 sky2_write8(hw, B2_Y2_CLK_GATE,
259 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
260 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
261 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
262
263 /* switch power to VAUX */
264 if (vaux && state != PCI_D3cold)
265 sky2_write8(hw, B0_POWER_CTRL,
266 (PC_VAUX_ENA | PC_VCC_ENA |
267 PC_VAUX_ON | PC_VCC_OFF));
268 break;
269 default:
270 printk(KERN_ERR PFX "Unknown power state %d\n", state);
271 ret = -1;
272 }
273
274 sky2_pci_write16(hw, hw->pm_cap + PCI_PM_CTRL, power_control);
275 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
276 return ret;
277 }
278
279 static void sky2_phy_reset(struct sky2_hw *hw, unsigned port)
280 {
281 u16 reg;
282
283 /* disable all GMAC IRQ's */
284 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
285 /* disable PHY IRQs */
286 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
287
288 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
289 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
290 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
291 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
292
293 reg = gma_read16(hw, port, GM_RX_CTRL);
294 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
295 gma_write16(hw, port, GM_RX_CTRL, reg);
296 }
297
298 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
299 {
300 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
301 u16 ctrl, ct1000, adv, pg, ledctrl, ledover;
302
303 if (sky2->autoneg == AUTONEG_ENABLE && hw->chip_id != CHIP_ID_YUKON_XL) {
304 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
305
306 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
307 PHY_M_EC_MAC_S_MSK);
308 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
309
310 if (hw->chip_id == CHIP_ID_YUKON_EC)
311 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
312 else
313 ectrl |= PHY_M_EC_M_DSC(2) | PHY_M_EC_S_DSC(3);
314
315 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
316 }
317
318 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
319 if (hw->copper) {
320 if (hw->chip_id == CHIP_ID_YUKON_FE) {
321 /* enable automatic crossover */
322 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
323 } else {
324 /* disable energy detect */
325 ctrl &= ~PHY_M_PC_EN_DET_MSK;
326
327 /* enable automatic crossover */
328 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
329
330 if (sky2->autoneg == AUTONEG_ENABLE &&
331 hw->chip_id == CHIP_ID_YUKON_XL) {
332 ctrl &= ~PHY_M_PC_DSC_MSK;
333 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
334 }
335 }
336 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
337 } else {
338 /* workaround for deviation #4.88 (CRC errors) */
339 /* disable Automatic Crossover */
340
341 ctrl &= ~PHY_M_PC_MDIX_MSK;
342 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
343
344 if (hw->chip_id == CHIP_ID_YUKON_XL) {
345 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
346 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
347 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
348 ctrl &= ~PHY_M_MAC_MD_MSK;
349 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
350 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
351
352 /* select page 1 to access Fiber registers */
353 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
354 }
355 }
356
357 ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
358 if (sky2->autoneg == AUTONEG_DISABLE)
359 ctrl &= ~PHY_CT_ANE;
360 else
361 ctrl |= PHY_CT_ANE;
362
363 ctrl |= PHY_CT_RESET;
364 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
365
366 ctrl = 0;
367 ct1000 = 0;
368 adv = PHY_AN_CSMA;
369
370 if (sky2->autoneg == AUTONEG_ENABLE) {
371 if (hw->copper) {
372 if (sky2->advertising & ADVERTISED_1000baseT_Full)
373 ct1000 |= PHY_M_1000C_AFD;
374 if (sky2->advertising & ADVERTISED_1000baseT_Half)
375 ct1000 |= PHY_M_1000C_AHD;
376 if (sky2->advertising & ADVERTISED_100baseT_Full)
377 adv |= PHY_M_AN_100_FD;
378 if (sky2->advertising & ADVERTISED_100baseT_Half)
379 adv |= PHY_M_AN_100_HD;
380 if (sky2->advertising & ADVERTISED_10baseT_Full)
381 adv |= PHY_M_AN_10_FD;
382 if (sky2->advertising & ADVERTISED_10baseT_Half)
383 adv |= PHY_M_AN_10_HD;
384 } else /* special defines for FIBER (88E1011S only) */
385 adv |= PHY_M_AN_1000X_AHD | PHY_M_AN_1000X_AFD;
386
387 /* Set Flow-control capabilities */
388 if (sky2->tx_pause && sky2->rx_pause)
389 adv |= PHY_AN_PAUSE_CAP; /* symmetric */
390 else if (sky2->rx_pause && !sky2->tx_pause)
391 adv |= PHY_AN_PAUSE_ASYM | PHY_AN_PAUSE_CAP;
392 else if (!sky2->rx_pause && sky2->tx_pause)
393 adv |= PHY_AN_PAUSE_ASYM; /* local */
394
395 /* Restart Auto-negotiation */
396 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
397 } else {
398 /* forced speed/duplex settings */
399 ct1000 = PHY_M_1000C_MSE;
400
401 if (sky2->duplex == DUPLEX_FULL)
402 ctrl |= PHY_CT_DUP_MD;
403
404 switch (sky2->speed) {
405 case SPEED_1000:
406 ctrl |= PHY_CT_SP1000;
407 break;
408 case SPEED_100:
409 ctrl |= PHY_CT_SP100;
410 break;
411 }
412
413 ctrl |= PHY_CT_RESET;
414 }
415
416 if (hw->chip_id != CHIP_ID_YUKON_FE)
417 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
418
419 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
420 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
421
422 /* Setup Phy LED's */
423 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
424 ledover = 0;
425
426 switch (hw->chip_id) {
427 case CHIP_ID_YUKON_FE:
428 /* on 88E3082 these bits are at 11..9 (shifted left) */
429 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
430
431 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
432
433 /* delete ACT LED control bits */
434 ctrl &= ~PHY_M_FELP_LED1_MSK;
435 /* change ACT LED control to blink mode */
436 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
437 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
438 break;
439
440 case CHIP_ID_YUKON_XL:
441 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
442
443 /* select page 3 to access LED control register */
444 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
445
446 /* set LED Function Control register */
447 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
448 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
449 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
450 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
451
452 /* set Polarity Control register */
453 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
454 (PHY_M_POLC_LS1_P_MIX(4) |
455 PHY_M_POLC_IS0_P_MIX(4) |
456 PHY_M_POLC_LOS_CTRL(2) |
457 PHY_M_POLC_INIT_CTRL(2) |
458 PHY_M_POLC_STA1_CTRL(2) |
459 PHY_M_POLC_STA0_CTRL(2)));
460
461 /* restore page register */
462 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
463 break;
464
465 default:
466 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
467 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
468 /* turn off the Rx LED (LED_RX) */
469 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
470 }
471
472 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev >= 2) {
473 /* apply fixes in PHY AFE */
474 gm_phy_write(hw, port, 22, 255);
475 /* increase differential signal amplitude in 10BASE-T */
476 gm_phy_write(hw, port, 24, 0xaa99);
477 gm_phy_write(hw, port, 23, 0x2011);
478
479 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
480 gm_phy_write(hw, port, 24, 0xa204);
481 gm_phy_write(hw, port, 23, 0x2002);
482
483 /* set page register to 0 */
484 gm_phy_write(hw, port, 22, 0);
485 } else {
486 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
487
488 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
489 /* turn on 100 Mbps LED (LED_LINK100) */
490 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
491 }
492
493 if (ledover)
494 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
495
496 }
497 /* Enable phy interrupt on auto-negotiation complete (or link up) */
498 if (sky2->autoneg == AUTONEG_ENABLE)
499 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
500 else
501 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
502 }
503
504 /* Force a renegotiation */
505 static void sky2_phy_reinit(struct sky2_port *sky2)
506 {
507 spin_lock_bh(&sky2->phy_lock);
508 sky2_phy_init(sky2->hw, sky2->port);
509 spin_unlock_bh(&sky2->phy_lock);
510 }
511
512 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
513 {
514 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
515 u16 reg;
516 int i;
517 const u8 *addr = hw->dev[port]->dev_addr;
518
519 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
520 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR|GPC_ENA_PAUSE);
521
522 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
523
524 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
525 /* WA DEV_472 -- looks like crossed wires on port 2 */
526 /* clear GMAC 1 Control reset */
527 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
528 do {
529 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
530 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
531 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
532 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
533 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
534 }
535
536 if (sky2->autoneg == AUTONEG_DISABLE) {
537 reg = gma_read16(hw, port, GM_GP_CTRL);
538 reg |= GM_GPCR_AU_ALL_DIS;
539 gma_write16(hw, port, GM_GP_CTRL, reg);
540 gma_read16(hw, port, GM_GP_CTRL);
541
542 switch (sky2->speed) {
543 case SPEED_1000:
544 reg &= ~GM_GPCR_SPEED_100;
545 reg |= GM_GPCR_SPEED_1000;
546 break;
547 case SPEED_100:
548 reg &= ~GM_GPCR_SPEED_1000;
549 reg |= GM_GPCR_SPEED_100;
550 break;
551 case SPEED_10:
552 reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
553 break;
554 }
555
556 if (sky2->duplex == DUPLEX_FULL)
557 reg |= GM_GPCR_DUP_FULL;
558 } else
559 reg = GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100 | GM_GPCR_DUP_FULL;
560
561 if (!sky2->tx_pause && !sky2->rx_pause) {
562 sky2_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
563 reg |=
564 GM_GPCR_FC_TX_DIS | GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
565 } else if (sky2->tx_pause && !sky2->rx_pause) {
566 /* disable Rx flow-control */
567 reg |= GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
568 }
569
570 gma_write16(hw, port, GM_GP_CTRL, reg);
571
572 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
573
574 spin_lock_bh(&sky2->phy_lock);
575 sky2_phy_init(hw, port);
576 spin_unlock_bh(&sky2->phy_lock);
577
578 /* MIB clear */
579 reg = gma_read16(hw, port, GM_PHY_ADDR);
580 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
581
582 for (i = 0; i < GM_MIB_CNT_SIZE; i++)
583 gma_read16(hw, port, GM_MIB_CNT_BASE + 8 * i);
584 gma_write16(hw, port, GM_PHY_ADDR, reg);
585
586 /* transmit control */
587 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
588
589 /* receive control reg: unicast + multicast + no FCS */
590 gma_write16(hw, port, GM_RX_CTRL,
591 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
592
593 /* transmit flow control */
594 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
595
596 /* transmit parameter */
597 gma_write16(hw, port, GM_TX_PARAM,
598 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
599 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
600 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
601 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
602
603 /* serial mode register */
604 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
605 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
606
607 if (hw->dev[port]->mtu > ETH_DATA_LEN)
608 reg |= GM_SMOD_JUMBO_ENA;
609
610 gma_write16(hw, port, GM_SERIAL_MODE, reg);
611
612 /* virtual address for data */
613 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
614
615 /* physical address: used for pause frames */
616 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
617
618 /* ignore counter overflows */
619 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
620 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
621 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
622
623 /* Configure Rx MAC FIFO */
624 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
625 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
626 GMF_OPER_ON | GMF_RX_F_FL_ON);
627
628 /* Flush Rx MAC FIFO on any flow control or error */
629 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
630
631 /* Set threshold to 0xa (64 bytes)
632 * ASF disabled so no need to do WA dev #4.30
633 */
634 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF);
635
636 /* Configure Tx MAC FIFO */
637 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
638 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
639
640 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
641 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
642 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
643 if (hw->dev[port]->mtu > ETH_DATA_LEN) {
644 /* set Tx GMAC FIFO Almost Empty Threshold */
645 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR), 0x180);
646 /* Disable Store & Forward mode for TX */
647 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
648 }
649 }
650
651 }
652
653 /* Assign Ram Buffer allocation.
654 * start and end are in units of 4k bytes
655 * ram registers are in units of 64bit words
656 */
657 static void sky2_ramset(struct sky2_hw *hw, u16 q, u8 startk, u8 endk)
658 {
659 u32 start, end;
660
661 start = startk * 4096/8;
662 end = (endk * 4096/8) - 1;
663
664 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
665 sky2_write32(hw, RB_ADDR(q, RB_START), start);
666 sky2_write32(hw, RB_ADDR(q, RB_END), end);
667 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
668 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
669
670 if (q == Q_R1 || q == Q_R2) {
671 u32 space = (endk - startk) * 4096/8;
672 u32 tp = space - space/4;
673
674 /* On receive queue's set the thresholds
675 * give receiver priority when > 3/4 full
676 * send pause when down to 2K
677 */
678 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
679 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
680
681 tp = space - 2048/8;
682 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
683 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
684 } else {
685 /* Enable store & forward on Tx queue's because
686 * Tx FIFO is only 1K on Yukon
687 */
688 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
689 }
690
691 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
692 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
693 }
694
695 /* Setup Bus Memory Interface */
696 static void sky2_qset(struct sky2_hw *hw, u16 q)
697 {
698 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
699 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
700 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
701 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
702 }
703
704 /* Setup prefetch unit registers. This is the interface between
705 * hardware and driver list elements
706 */
707 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
708 u64 addr, u32 last)
709 {
710 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
711 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
712 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
713 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
714 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
715 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
716
717 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
718 }
719
720 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
721 {
722 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
723
724 sky2->tx_prod = (sky2->tx_prod + 1) % TX_RING_SIZE;
725 return le;
726 }
727
728 /* Update chip's next pointer */
729 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
730 {
731 wmb();
732 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
733 mmiowb();
734 }
735
736
737 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
738 {
739 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
740 sky2->rx_put = (sky2->rx_put + 1) % RX_LE_SIZE;
741 return le;
742 }
743
744 /* Return high part of DMA address (could be 32 or 64 bit) */
745 static inline u32 high32(dma_addr_t a)
746 {
747 return sizeof(a) > sizeof(u32) ? (a >> 16) >> 16 : 0;
748 }
749
750 /* Build description to hardware about buffer */
751 static void sky2_rx_add(struct sky2_port *sky2, dma_addr_t map)
752 {
753 struct sky2_rx_le *le;
754 u32 hi = high32(map);
755 u16 len = sky2->rx_bufsize;
756
757 if (sky2->rx_addr64 != hi) {
758 le = sky2_next_rx(sky2);
759 le->addr = cpu_to_le32(hi);
760 le->ctrl = 0;
761 le->opcode = OP_ADDR64 | HW_OWNER;
762 sky2->rx_addr64 = high32(map + len);
763 }
764
765 le = sky2_next_rx(sky2);
766 le->addr = cpu_to_le32((u32) map);
767 le->length = cpu_to_le16(len);
768 le->ctrl = 0;
769 le->opcode = OP_PACKET | HW_OWNER;
770 }
771
772
773 /* Tell chip where to start receive checksum.
774 * Actually has two checksums, but set both same to avoid possible byte
775 * order problems.
776 */
777 static void rx_set_checksum(struct sky2_port *sky2)
778 {
779 struct sky2_rx_le *le;
780
781 le = sky2_next_rx(sky2);
782 le->addr = (ETH_HLEN << 16) | ETH_HLEN;
783 le->ctrl = 0;
784 le->opcode = OP_TCPSTART | HW_OWNER;
785
786 sky2_write32(sky2->hw,
787 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
788 sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
789
790 }
791
792 /*
793 * The RX Stop command will not work for Yukon-2 if the BMU does not
794 * reach the end of packet and since we can't make sure that we have
795 * incoming data, we must reset the BMU while it is not doing a DMA
796 * transfer. Since it is possible that the RX path is still active,
797 * the RX RAM buffer will be stopped first, so any possible incoming
798 * data will not trigger a DMA. After the RAM buffer is stopped, the
799 * BMU is polled until any DMA in progress is ended and only then it
800 * will be reset.
801 */
802 static void sky2_rx_stop(struct sky2_port *sky2)
803 {
804 struct sky2_hw *hw = sky2->hw;
805 unsigned rxq = rxqaddr[sky2->port];
806 int i;
807
808 /* disable the RAM Buffer receive queue */
809 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
810
811 for (i = 0; i < 0xffff; i++)
812 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
813 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
814 goto stopped;
815
816 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
817 sky2->netdev->name);
818 stopped:
819 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
820
821 /* reset the Rx prefetch unit */
822 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
823 }
824
825 /* Clean out receive buffer area, assumes receiver hardware stopped */
826 static void sky2_rx_clean(struct sky2_port *sky2)
827 {
828 unsigned i;
829
830 memset(sky2->rx_le, 0, RX_LE_BYTES);
831 for (i = 0; i < sky2->rx_pending; i++) {
832 struct ring_info *re = sky2->rx_ring + i;
833
834 if (re->skb) {
835 pci_unmap_single(sky2->hw->pdev,
836 re->mapaddr, sky2->rx_bufsize,
837 PCI_DMA_FROMDEVICE);
838 kfree_skb(re->skb);
839 re->skb = NULL;
840 }
841 }
842 }
843
844 /* Basic MII support */
845 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
846 {
847 struct mii_ioctl_data *data = if_mii(ifr);
848 struct sky2_port *sky2 = netdev_priv(dev);
849 struct sky2_hw *hw = sky2->hw;
850 int err = -EOPNOTSUPP;
851
852 if (!netif_running(dev))
853 return -ENODEV; /* Phy still in reset */
854
855 switch (cmd) {
856 case SIOCGMIIPHY:
857 data->phy_id = PHY_ADDR_MARV;
858
859 /* fallthru */
860 case SIOCGMIIREG: {
861 u16 val = 0;
862
863 spin_lock_bh(&sky2->phy_lock);
864 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
865 spin_unlock_bh(&sky2->phy_lock);
866
867 data->val_out = val;
868 break;
869 }
870
871 case SIOCSMIIREG:
872 if (!capable(CAP_NET_ADMIN))
873 return -EPERM;
874
875 spin_lock_bh(&sky2->phy_lock);
876 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
877 data->val_in);
878 spin_unlock_bh(&sky2->phy_lock);
879 break;
880 }
881 return err;
882 }
883
884 #ifdef SKY2_VLAN_TAG_USED
885 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
886 {
887 struct sky2_port *sky2 = netdev_priv(dev);
888 struct sky2_hw *hw = sky2->hw;
889 u16 port = sky2->port;
890
891 spin_lock_bh(&sky2->tx_lock);
892
893 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_ON);
894 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_ON);
895 sky2->vlgrp = grp;
896
897 spin_unlock_bh(&sky2->tx_lock);
898 }
899
900 static void sky2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
901 {
902 struct sky2_port *sky2 = netdev_priv(dev);
903 struct sky2_hw *hw = sky2->hw;
904 u16 port = sky2->port;
905
906 spin_lock_bh(&sky2->tx_lock);
907
908 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_OFF);
909 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_OFF);
910 if (sky2->vlgrp)
911 sky2->vlgrp->vlan_devices[vid] = NULL;
912
913 spin_unlock_bh(&sky2->tx_lock);
914 }
915 #endif
916
917 /*
918 * It appears the hardware has a bug in the FIFO logic that
919 * cause it to hang if the FIFO gets overrun and the receive buffer
920 * is not aligned. ALso alloc_skb() won't align properly if slab
921 * debugging is enabled.
922 */
923 static inline struct sk_buff *sky2_alloc_skb(unsigned int size, gfp_t gfp_mask)
924 {
925 struct sk_buff *skb;
926
927 skb = alloc_skb(size + RX_SKB_ALIGN, gfp_mask);
928 if (likely(skb)) {
929 unsigned long p = (unsigned long) skb->data;
930 skb_reserve(skb,
931 ((p + RX_SKB_ALIGN - 1) & ~(RX_SKB_ALIGN - 1)) - p);
932 }
933
934 return skb;
935 }
936
937 /*
938 * Allocate and setup receiver buffer pool.
939 * In case of 64 bit dma, there are 2X as many list elements
940 * available as ring entries
941 * and need to reserve one list element so we don't wrap around.
942 */
943 static int sky2_rx_start(struct sky2_port *sky2)
944 {
945 struct sky2_hw *hw = sky2->hw;
946 unsigned rxq = rxqaddr[sky2->port];
947 int i;
948
949 sky2->rx_put = sky2->rx_next = 0;
950 sky2_qset(hw, rxq);
951
952 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev >= 2) {
953 /* MAC Rx RAM Read is controlled by hardware */
954 sky2_write32(hw, Q_ADDR(rxq, Q_F), F_M_RX_RAM_DIS);
955 }
956
957 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
958
959 rx_set_checksum(sky2);
960 for (i = 0; i < sky2->rx_pending; i++) {
961 struct ring_info *re = sky2->rx_ring + i;
962
963 re->skb = sky2_alloc_skb(sky2->rx_bufsize, GFP_KERNEL);
964 if (!re->skb)
965 goto nomem;
966
967 re->mapaddr = pci_map_single(hw->pdev, re->skb->data,
968 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
969 sky2_rx_add(sky2, re->mapaddr);
970 }
971
972 /* Truncate oversize frames */
973 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), sky2->rx_bufsize - 8);
974 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
975
976 /* Tell chip about available buffers */
977 sky2_write16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX), sky2->rx_put);
978 return 0;
979 nomem:
980 sky2_rx_clean(sky2);
981 return -ENOMEM;
982 }
983
984 /* Bring up network interface. */
985 static int sky2_up(struct net_device *dev)
986 {
987 struct sky2_port *sky2 = netdev_priv(dev);
988 struct sky2_hw *hw = sky2->hw;
989 unsigned port = sky2->port;
990 u32 ramsize, rxspace, imask;
991 int err = -ENOMEM;
992
993 if (netif_msg_ifup(sky2))
994 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
995
996 /* must be power of 2 */
997 sky2->tx_le = pci_alloc_consistent(hw->pdev,
998 TX_RING_SIZE *
999 sizeof(struct sky2_tx_le),
1000 &sky2->tx_le_map);
1001 if (!sky2->tx_le)
1002 goto err_out;
1003
1004 sky2->tx_ring = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info),
1005 GFP_KERNEL);
1006 if (!sky2->tx_ring)
1007 goto err_out;
1008 sky2->tx_prod = sky2->tx_cons = 0;
1009
1010 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1011 &sky2->rx_le_map);
1012 if (!sky2->rx_le)
1013 goto err_out;
1014 memset(sky2->rx_le, 0, RX_LE_BYTES);
1015
1016 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct ring_info),
1017 GFP_KERNEL);
1018 if (!sky2->rx_ring)
1019 goto err_out;
1020
1021 sky2_mac_init(hw, port);
1022
1023 /* Determine available ram buffer space (in 4K blocks).
1024 * Note: not sure about the FE setting below yet
1025 */
1026 if (hw->chip_id == CHIP_ID_YUKON_FE)
1027 ramsize = 4;
1028 else
1029 ramsize = sky2_read8(hw, B2_E_0);
1030
1031 /* Give transmitter one third (rounded up) */
1032 rxspace = ramsize - (ramsize + 2) / 3;
1033
1034 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1035 sky2_ramset(hw, txqaddr[port], rxspace, ramsize);
1036
1037 /* Make sure SyncQ is disabled */
1038 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1039 RB_RST_SET);
1040
1041 sky2_qset(hw, txqaddr[port]);
1042
1043 /* Set almost empty threshold */
1044 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev == 1)
1045 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), 0x1a0);
1046
1047 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1048 TX_RING_SIZE - 1);
1049
1050 err = sky2_rx_start(sky2);
1051 if (err)
1052 goto err_out;
1053
1054 /* Enable interrupts from phy/mac for port */
1055 imask = sky2_read32(hw, B0_IMSK);
1056 imask |= (port == 0) ? Y2_IS_PORT_1 : Y2_IS_PORT_2;
1057 sky2_write32(hw, B0_IMSK, imask);
1058
1059 return 0;
1060
1061 err_out:
1062 if (sky2->rx_le) {
1063 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1064 sky2->rx_le, sky2->rx_le_map);
1065 sky2->rx_le = NULL;
1066 }
1067 if (sky2->tx_le) {
1068 pci_free_consistent(hw->pdev,
1069 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1070 sky2->tx_le, sky2->tx_le_map);
1071 sky2->tx_le = NULL;
1072 }
1073 kfree(sky2->tx_ring);
1074 kfree(sky2->rx_ring);
1075
1076 sky2->tx_ring = NULL;
1077 sky2->rx_ring = NULL;
1078 return err;
1079 }
1080
1081 /* Modular subtraction in ring */
1082 static inline int tx_dist(unsigned tail, unsigned head)
1083 {
1084 return (head - tail) % TX_RING_SIZE;
1085 }
1086
1087 /* Number of list elements available for next tx */
1088 static inline int tx_avail(const struct sky2_port *sky2)
1089 {
1090 return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
1091 }
1092
1093 /* Estimate of number of transmit list elements required */
1094 static unsigned tx_le_req(const struct sk_buff *skb)
1095 {
1096 unsigned count;
1097
1098 count = sizeof(dma_addr_t) / sizeof(u32);
1099 count += skb_shinfo(skb)->nr_frags * count;
1100
1101 if (skb_shinfo(skb)->tso_size)
1102 ++count;
1103
1104 if (skb->ip_summed == CHECKSUM_HW)
1105 ++count;
1106
1107 return count;
1108 }
1109
1110 /*
1111 * Put one packet in ring for transmit.
1112 * A single packet can generate multiple list elements, and
1113 * the number of ring elements will probably be less than the number
1114 * of list elements used.
1115 *
1116 * No BH disabling for tx_lock here (like tg3)
1117 */
1118 static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1119 {
1120 struct sky2_port *sky2 = netdev_priv(dev);
1121 struct sky2_hw *hw = sky2->hw;
1122 struct sky2_tx_le *le = NULL;
1123 struct tx_ring_info *re;
1124 unsigned i, len;
1125 int avail;
1126 dma_addr_t mapping;
1127 u32 addr64;
1128 u16 mss;
1129 u8 ctrl;
1130
1131 /* No BH disabling for tx_lock here. We are running in BH disabled
1132 * context and TX reclaim runs via poll inside of a software
1133 * interrupt, and no related locks in IRQ processing.
1134 */
1135 if (!spin_trylock(&sky2->tx_lock))
1136 return NETDEV_TX_LOCKED;
1137
1138 if (unlikely(tx_avail(sky2) < tx_le_req(skb))) {
1139 /* There is a known but harmless race with lockless tx
1140 * and netif_stop_queue.
1141 */
1142 if (!netif_queue_stopped(dev)) {
1143 netif_stop_queue(dev);
1144 if (net_ratelimit())
1145 printk(KERN_WARNING PFX "%s: ring full when queue awake!\n",
1146 dev->name);
1147 }
1148 spin_unlock(&sky2->tx_lock);
1149
1150 return NETDEV_TX_BUSY;
1151 }
1152
1153 if (unlikely(netif_msg_tx_queued(sky2)))
1154 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1155 dev->name, sky2->tx_prod, skb->len);
1156
1157 len = skb_headlen(skb);
1158 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1159 addr64 = high32(mapping);
1160
1161 re = sky2->tx_ring + sky2->tx_prod;
1162
1163 /* Send high bits if changed or crosses boundary */
1164 if (addr64 != sky2->tx_addr64 || high32(mapping + len) != sky2->tx_addr64) {
1165 le = get_tx_le(sky2);
1166 le->tx.addr = cpu_to_le32(addr64);
1167 le->ctrl = 0;
1168 le->opcode = OP_ADDR64 | HW_OWNER;
1169 sky2->tx_addr64 = high32(mapping + len);
1170 }
1171
1172 /* Check for TCP Segmentation Offload */
1173 mss = skb_shinfo(skb)->tso_size;
1174 if (mss != 0) {
1175 /* just drop the packet if non-linear expansion fails */
1176 if (skb_header_cloned(skb) &&
1177 pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) {
1178 dev_kfree_skb(skb);
1179 goto out_unlock;
1180 }
1181
1182 mss += ((skb->h.th->doff - 5) * 4); /* TCP options */
1183 mss += (skb->nh.iph->ihl * 4) + sizeof(struct tcphdr);
1184 mss += ETH_HLEN;
1185 }
1186
1187 if (mss != sky2->tx_last_mss) {
1188 le = get_tx_le(sky2);
1189 le->tx.tso.size = cpu_to_le16(mss);
1190 le->tx.tso.rsvd = 0;
1191 le->opcode = OP_LRGLEN | HW_OWNER;
1192 le->ctrl = 0;
1193 sky2->tx_last_mss = mss;
1194 }
1195
1196 ctrl = 0;
1197 #ifdef SKY2_VLAN_TAG_USED
1198 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1199 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1200 if (!le) {
1201 le = get_tx_le(sky2);
1202 le->tx.addr = 0;
1203 le->opcode = OP_VLAN|HW_OWNER;
1204 le->ctrl = 0;
1205 } else
1206 le->opcode |= OP_VLAN;
1207 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1208 ctrl |= INS_VLAN;
1209 }
1210 #endif
1211
1212 /* Handle TCP checksum offload */
1213 if (skb->ip_summed == CHECKSUM_HW) {
1214 u16 hdr = skb->h.raw - skb->data;
1215 u16 offset = hdr + skb->csum;
1216
1217 ctrl = CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1218 if (skb->nh.iph->protocol == IPPROTO_UDP)
1219 ctrl |= UDPTCP;
1220
1221 le = get_tx_le(sky2);
1222 le->tx.csum.start = cpu_to_le16(hdr);
1223 le->tx.csum.offset = cpu_to_le16(offset);
1224 le->length = 0; /* initial checksum value */
1225 le->ctrl = 1; /* one packet */
1226 le->opcode = OP_TCPLISW | HW_OWNER;
1227 }
1228
1229 le = get_tx_le(sky2);
1230 le->tx.addr = cpu_to_le32((u32) mapping);
1231 le->length = cpu_to_le16(len);
1232 le->ctrl = ctrl;
1233 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1234
1235 /* Record the transmit mapping info */
1236 re->skb = skb;
1237 pci_unmap_addr_set(re, mapaddr, mapping);
1238
1239 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1240 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1241 struct tx_ring_info *fre;
1242
1243 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1244 frag->size, PCI_DMA_TODEVICE);
1245 addr64 = high32(mapping);
1246 if (addr64 != sky2->tx_addr64) {
1247 le = get_tx_le(sky2);
1248 le->tx.addr = cpu_to_le32(addr64);
1249 le->ctrl = 0;
1250 le->opcode = OP_ADDR64 | HW_OWNER;
1251 sky2->tx_addr64 = addr64;
1252 }
1253
1254 le = get_tx_le(sky2);
1255 le->tx.addr = cpu_to_le32((u32) mapping);
1256 le->length = cpu_to_le16(frag->size);
1257 le->ctrl = ctrl;
1258 le->opcode = OP_BUFFER | HW_OWNER;
1259
1260 fre = sky2->tx_ring
1261 + ((re - sky2->tx_ring) + i + 1) % TX_RING_SIZE;
1262 pci_unmap_addr_set(fre, mapaddr, mapping);
1263 }
1264
1265 re->idx = sky2->tx_prod;
1266 le->ctrl |= EOP;
1267
1268 avail = tx_avail(sky2);
1269 if (mss != 0 || avail < TX_MIN_PENDING) {
1270 le->ctrl |= FRC_STAT;
1271 if (avail <= MAX_SKB_TX_LE)
1272 netif_stop_queue(dev);
1273 }
1274
1275 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1276
1277 out_unlock:
1278 spin_unlock(&sky2->tx_lock);
1279
1280 dev->trans_start = jiffies;
1281 return NETDEV_TX_OK;
1282 }
1283
1284 /*
1285 * Free ring elements from starting at tx_cons until "done"
1286 *
1287 * NB: the hardware will tell us about partial completion of multi-part
1288 * buffers; these are deferred until completion.
1289 */
1290 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1291 {
1292 struct net_device *dev = sky2->netdev;
1293 struct pci_dev *pdev = sky2->hw->pdev;
1294 u16 nxt, put;
1295 unsigned i;
1296
1297 BUG_ON(done >= TX_RING_SIZE);
1298
1299 if (unlikely(netif_msg_tx_done(sky2)))
1300 printk(KERN_DEBUG "%s: tx done, up to %u\n",
1301 dev->name, done);
1302
1303 for (put = sky2->tx_cons; put != done; put = nxt) {
1304 struct tx_ring_info *re = sky2->tx_ring + put;
1305 struct sk_buff *skb = re->skb;
1306
1307 nxt = re->idx;
1308 BUG_ON(nxt >= TX_RING_SIZE);
1309 prefetch(sky2->tx_ring + nxt);
1310
1311 /* Check for partial status */
1312 if (tx_dist(put, done) < tx_dist(put, nxt))
1313 break;
1314
1315 skb = re->skb;
1316 pci_unmap_single(pdev, pci_unmap_addr(re, mapaddr),
1317 skb_headlen(skb), PCI_DMA_TODEVICE);
1318
1319 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1320 struct tx_ring_info *fre;
1321 fre = sky2->tx_ring + (put + i + 1) % TX_RING_SIZE;
1322 pci_unmap_page(pdev, pci_unmap_addr(fre, mapaddr),
1323 skb_shinfo(skb)->frags[i].size,
1324 PCI_DMA_TODEVICE);
1325 }
1326
1327 dev_kfree_skb(skb);
1328 }
1329
1330 sky2->tx_cons = put;
1331 if (tx_avail(sky2) > MAX_SKB_TX_LE)
1332 netif_wake_queue(dev);
1333 }
1334
1335 /* Cleanup all untransmitted buffers, assume transmitter not running */
1336 static void sky2_tx_clean(struct sky2_port *sky2)
1337 {
1338 spin_lock_bh(&sky2->tx_lock);
1339 sky2_tx_complete(sky2, sky2->tx_prod);
1340 spin_unlock_bh(&sky2->tx_lock);
1341 }
1342
1343 /* Network shutdown */
1344 static int sky2_down(struct net_device *dev)
1345 {
1346 struct sky2_port *sky2 = netdev_priv(dev);
1347 struct sky2_hw *hw = sky2->hw;
1348 unsigned port = sky2->port;
1349 u16 ctrl;
1350 u32 imask;
1351
1352 /* Never really got started! */
1353 if (!sky2->tx_le)
1354 return 0;
1355
1356 if (netif_msg_ifdown(sky2))
1357 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1358
1359 /* Stop more packets from being queued */
1360 netif_stop_queue(dev);
1361
1362 sky2_phy_reset(hw, port);
1363
1364 /* Stop transmitter */
1365 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1366 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1367
1368 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1369 RB_RST_SET | RB_DIS_OP_MD);
1370
1371 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1372 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1373 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1374
1375 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1376
1377 /* Workaround shared GMAC reset */
1378 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1379 && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1380 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1381
1382 /* Disable Force Sync bit and Enable Alloc bit */
1383 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1384 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1385
1386 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1387 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1388 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1389
1390 /* Reset the PCI FIFO of the async Tx queue */
1391 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1392 BMU_RST_SET | BMU_FIFO_RST);
1393
1394 /* Reset the Tx prefetch units */
1395 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1396 PREF_UNIT_RST_SET);
1397
1398 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1399
1400 sky2_rx_stop(sky2);
1401
1402 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1403 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1404
1405 /* Disable port IRQ */
1406 imask = sky2_read32(hw, B0_IMSK);
1407 imask &= ~(sky2->port == 0) ? Y2_IS_PORT_1 : Y2_IS_PORT_2;
1408 sky2_write32(hw, B0_IMSK, imask);
1409
1410 /* turn off LED's */
1411 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1412
1413 synchronize_irq(hw->pdev->irq);
1414
1415 sky2_tx_clean(sky2);
1416 sky2_rx_clean(sky2);
1417
1418 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1419 sky2->rx_le, sky2->rx_le_map);
1420 kfree(sky2->rx_ring);
1421
1422 pci_free_consistent(hw->pdev,
1423 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1424 sky2->tx_le, sky2->tx_le_map);
1425 kfree(sky2->tx_ring);
1426
1427 sky2->tx_le = NULL;
1428 sky2->rx_le = NULL;
1429
1430 sky2->rx_ring = NULL;
1431 sky2->tx_ring = NULL;
1432
1433 return 0;
1434 }
1435
1436 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1437 {
1438 if (!hw->copper)
1439 return SPEED_1000;
1440
1441 if (hw->chip_id == CHIP_ID_YUKON_FE)
1442 return (aux & PHY_M_PS_SPEED_100) ? SPEED_100 : SPEED_10;
1443
1444 switch (aux & PHY_M_PS_SPEED_MSK) {
1445 case PHY_M_PS_SPEED_1000:
1446 return SPEED_1000;
1447 case PHY_M_PS_SPEED_100:
1448 return SPEED_100;
1449 default:
1450 return SPEED_10;
1451 }
1452 }
1453
1454 static void sky2_link_up(struct sky2_port *sky2)
1455 {
1456 struct sky2_hw *hw = sky2->hw;
1457 unsigned port = sky2->port;
1458 u16 reg;
1459
1460 /* Enable Transmit FIFO Underrun */
1461 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
1462
1463 reg = gma_read16(hw, port, GM_GP_CTRL);
1464 if (sky2->autoneg == AUTONEG_DISABLE) {
1465 reg |= GM_GPCR_AU_ALL_DIS;
1466
1467 /* Is write/read necessary? Copied from sky2_mac_init */
1468 gma_write16(hw, port, GM_GP_CTRL, reg);
1469 gma_read16(hw, port, GM_GP_CTRL);
1470
1471 switch (sky2->speed) {
1472 case SPEED_1000:
1473 reg &= ~GM_GPCR_SPEED_100;
1474 reg |= GM_GPCR_SPEED_1000;
1475 break;
1476 case SPEED_100:
1477 reg &= ~GM_GPCR_SPEED_1000;
1478 reg |= GM_GPCR_SPEED_100;
1479 break;
1480 case SPEED_10:
1481 reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
1482 break;
1483 }
1484 } else
1485 reg &= ~GM_GPCR_AU_ALL_DIS;
1486
1487 if (sky2->duplex == DUPLEX_FULL || sky2->autoneg == AUTONEG_ENABLE)
1488 reg |= GM_GPCR_DUP_FULL;
1489
1490 /* enable Rx/Tx */
1491 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1492 gma_write16(hw, port, GM_GP_CTRL, reg);
1493 gma_read16(hw, port, GM_GP_CTRL);
1494
1495 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1496
1497 netif_carrier_on(sky2->netdev);
1498 netif_wake_queue(sky2->netdev);
1499
1500 /* Turn on link LED */
1501 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1502 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1503
1504 if (hw->chip_id == CHIP_ID_YUKON_XL) {
1505 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
1506
1507 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
1508 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
1509 PHY_M_LEDC_INIT_CTRL(sky2->speed ==
1510 SPEED_10 ? 7 : 0) |
1511 PHY_M_LEDC_STA1_CTRL(sky2->speed ==
1512 SPEED_100 ? 7 : 0) |
1513 PHY_M_LEDC_STA0_CTRL(sky2->speed ==
1514 SPEED_1000 ? 7 : 0));
1515 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
1516 }
1517
1518 if (netif_msg_link(sky2))
1519 printk(KERN_INFO PFX
1520 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1521 sky2->netdev->name, sky2->speed,
1522 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1523 (sky2->tx_pause && sky2->rx_pause) ? "both" :
1524 sky2->tx_pause ? "tx" : sky2->rx_pause ? "rx" : "none");
1525 }
1526
1527 static void sky2_link_down(struct sky2_port *sky2)
1528 {
1529 struct sky2_hw *hw = sky2->hw;
1530 unsigned port = sky2->port;
1531 u16 reg;
1532
1533 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1534
1535 reg = gma_read16(hw, port, GM_GP_CTRL);
1536 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1537 gma_write16(hw, port, GM_GP_CTRL, reg);
1538 gma_read16(hw, port, GM_GP_CTRL); /* PCI post */
1539
1540 if (sky2->rx_pause && !sky2->tx_pause) {
1541 /* restore Asymmetric Pause bit */
1542 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV,
1543 gm_phy_read(hw, port, PHY_MARV_AUNE_ADV)
1544 | PHY_M_AN_ASP);
1545 }
1546
1547 netif_carrier_off(sky2->netdev);
1548 netif_stop_queue(sky2->netdev);
1549
1550 /* Turn on link LED */
1551 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1552
1553 if (netif_msg_link(sky2))
1554 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
1555 sky2_phy_init(hw, port);
1556 }
1557
1558 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
1559 {
1560 struct sky2_hw *hw = sky2->hw;
1561 unsigned port = sky2->port;
1562 u16 lpa;
1563
1564 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
1565
1566 if (lpa & PHY_M_AN_RF) {
1567 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
1568 return -1;
1569 }
1570
1571 if (hw->chip_id != CHIP_ID_YUKON_FE &&
1572 gm_phy_read(hw, port, PHY_MARV_1000T_STAT) & PHY_B_1000S_MSF) {
1573 printk(KERN_ERR PFX "%s: master/slave fault",
1574 sky2->netdev->name);
1575 return -1;
1576 }
1577
1578 if (!(aux & PHY_M_PS_SPDUP_RES)) {
1579 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
1580 sky2->netdev->name);
1581 return -1;
1582 }
1583
1584 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1585
1586 sky2->speed = sky2_phy_speed(hw, aux);
1587
1588 /* Pause bits are offset (9..8) */
1589 if (hw->chip_id == CHIP_ID_YUKON_XL)
1590 aux >>= 6;
1591
1592 sky2->rx_pause = (aux & PHY_M_PS_RX_P_EN) != 0;
1593 sky2->tx_pause = (aux & PHY_M_PS_TX_P_EN) != 0;
1594
1595 if ((sky2->tx_pause || sky2->rx_pause)
1596 && !(sky2->speed < SPEED_1000 && sky2->duplex == DUPLEX_HALF))
1597 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
1598 else
1599 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1600
1601 return 0;
1602 }
1603
1604 /* Interrupt from PHY */
1605 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
1606 {
1607 struct net_device *dev = hw->dev[port];
1608 struct sky2_port *sky2 = netdev_priv(dev);
1609 u16 istatus, phystat;
1610
1611 spin_lock(&sky2->phy_lock);
1612 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
1613 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
1614
1615 if (!netif_running(dev))
1616 goto out;
1617
1618 if (netif_msg_intr(sky2))
1619 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
1620 sky2->netdev->name, istatus, phystat);
1621
1622 if (istatus & PHY_M_IS_AN_COMPL) {
1623 if (sky2_autoneg_done(sky2, phystat) == 0)
1624 sky2_link_up(sky2);
1625 goto out;
1626 }
1627
1628 if (istatus & PHY_M_IS_LSP_CHANGE)
1629 sky2->speed = sky2_phy_speed(hw, phystat);
1630
1631 if (istatus & PHY_M_IS_DUP_CHANGE)
1632 sky2->duplex =
1633 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1634
1635 if (istatus & PHY_M_IS_LST_CHANGE) {
1636 if (phystat & PHY_M_PS_LINK_UP)
1637 sky2_link_up(sky2);
1638 else
1639 sky2_link_down(sky2);
1640 }
1641 out:
1642 spin_unlock(&sky2->phy_lock);
1643 }
1644
1645
1646 /* Transmit timeout is only called if we are running, carries is up
1647 * and tx queue is full (stopped).
1648 */
1649 static void sky2_tx_timeout(struct net_device *dev)
1650 {
1651 struct sky2_port *sky2 = netdev_priv(dev);
1652 struct sky2_hw *hw = sky2->hw;
1653 unsigned txq = txqaddr[sky2->port];
1654 u16 report, done;
1655
1656 if (netif_msg_timer(sky2))
1657 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
1658
1659 report = sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX);
1660 done = sky2_read16(hw, Q_ADDR(txq, Q_DONE));
1661
1662 printk(KERN_DEBUG PFX "%s: transmit ring %u .. %u report=%u done=%u\n",
1663 dev->name,
1664 sky2->tx_cons, sky2->tx_prod, report, done);
1665
1666 if (report != done) {
1667 printk(KERN_INFO PFX "status burst pending (irq moderation?)\n");
1668
1669 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
1670 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
1671 } else if (report != sky2->tx_cons) {
1672 printk(KERN_INFO PFX "status report lost?\n");
1673
1674 spin_lock_bh(&sky2->tx_lock);
1675 sky2_tx_complete(sky2, report);
1676 spin_unlock_bh(&sky2->tx_lock);
1677 } else {
1678 printk(KERN_INFO PFX "hardware hung? flushing\n");
1679
1680 sky2_write32(hw, Q_ADDR(txq, Q_CSR), BMU_STOP);
1681 sky2_write32(hw, Y2_QADDR(txq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1682
1683 sky2_tx_clean(sky2);
1684
1685 sky2_qset(hw, txq);
1686 sky2_prefetch_init(hw, txq, sky2->tx_le_map, TX_RING_SIZE - 1);
1687 }
1688 }
1689
1690
1691 #define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
1692 /* Want receive buffer size to be multiple of 64 bits
1693 * and incl room for vlan and truncation
1694 */
1695 static inline unsigned sky2_buf_size(int mtu)
1696 {
1697 return roundup(mtu + ETH_HLEN + VLAN_HLEN, 8) + 8;
1698 }
1699
1700 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
1701 {
1702 struct sky2_port *sky2 = netdev_priv(dev);
1703 struct sky2_hw *hw = sky2->hw;
1704 int err;
1705 u16 ctl, mode;
1706 u32 imask;
1707
1708 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
1709 return -EINVAL;
1710
1711 if (hw->chip_id == CHIP_ID_YUKON_EC_U && new_mtu > ETH_DATA_LEN)
1712 return -EINVAL;
1713
1714 if (!netif_running(dev)) {
1715 dev->mtu = new_mtu;
1716 return 0;
1717 }
1718
1719 imask = sky2_read32(hw, B0_IMSK);
1720 sky2_write32(hw, B0_IMSK, 0);
1721
1722 dev->trans_start = jiffies; /* prevent tx timeout */
1723 netif_stop_queue(dev);
1724 netif_poll_disable(hw->dev[0]);
1725
1726 synchronize_irq(hw->pdev->irq);
1727
1728 ctl = gma_read16(hw, sky2->port, GM_GP_CTRL);
1729 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
1730 sky2_rx_stop(sky2);
1731 sky2_rx_clean(sky2);
1732
1733 dev->mtu = new_mtu;
1734 sky2->rx_bufsize = sky2_buf_size(new_mtu);
1735 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
1736 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
1737
1738 if (dev->mtu > ETH_DATA_LEN)
1739 mode |= GM_SMOD_JUMBO_ENA;
1740
1741 gma_write16(hw, sky2->port, GM_SERIAL_MODE, mode);
1742
1743 sky2_write8(hw, RB_ADDR(rxqaddr[sky2->port], RB_CTRL), RB_ENA_OP_MD);
1744
1745 err = sky2_rx_start(sky2);
1746 sky2_write32(hw, B0_IMSK, imask);
1747
1748 if (err)
1749 dev_close(dev);
1750 else {
1751 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl);
1752
1753 netif_poll_enable(hw->dev[0]);
1754 netif_wake_queue(dev);
1755 }
1756
1757 return err;
1758 }
1759
1760 /*
1761 * Receive one packet.
1762 * For small packets or errors, just reuse existing skb.
1763 * For larger packets, get new buffer.
1764 */
1765 static struct sk_buff *sky2_receive(struct sky2_port *sky2,
1766 u16 length, u32 status)
1767 {
1768 struct ring_info *re = sky2->rx_ring + sky2->rx_next;
1769 struct sk_buff *skb = NULL;
1770
1771 if (unlikely(netif_msg_rx_status(sky2)))
1772 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
1773 sky2->netdev->name, sky2->rx_next, status, length);
1774
1775 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
1776 prefetch(sky2->rx_ring + sky2->rx_next);
1777
1778 if (status & GMR_FS_ANY_ERR)
1779 goto error;
1780
1781 if (!(status & GMR_FS_RX_OK))
1782 goto resubmit;
1783
1784 if (length > sky2->netdev->mtu + ETH_HLEN)
1785 goto oversize;
1786
1787 if (length < copybreak) {
1788 skb = alloc_skb(length + 2, GFP_ATOMIC);
1789 if (!skb)
1790 goto resubmit;
1791
1792 skb_reserve(skb, 2);
1793 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->mapaddr,
1794 length, PCI_DMA_FROMDEVICE);
1795 memcpy(skb->data, re->skb->data, length);
1796 skb->ip_summed = re->skb->ip_summed;
1797 skb->csum = re->skb->csum;
1798 pci_dma_sync_single_for_device(sky2->hw->pdev, re->mapaddr,
1799 length, PCI_DMA_FROMDEVICE);
1800 } else {
1801 struct sk_buff *nskb;
1802
1803 nskb = sky2_alloc_skb(sky2->rx_bufsize, GFP_ATOMIC);
1804 if (!nskb)
1805 goto resubmit;
1806
1807 skb = re->skb;
1808 re->skb = nskb;
1809 pci_unmap_single(sky2->hw->pdev, re->mapaddr,
1810 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
1811 prefetch(skb->data);
1812
1813 re->mapaddr = pci_map_single(sky2->hw->pdev, nskb->data,
1814 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
1815 }
1816
1817 skb_put(skb, length);
1818 resubmit:
1819 re->skb->ip_summed = CHECKSUM_NONE;
1820 sky2_rx_add(sky2, re->mapaddr);
1821
1822 /* Tell receiver about new buffers. */
1823 sky2_put_idx(sky2->hw, rxqaddr[sky2->port], sky2->rx_put);
1824
1825 return skb;
1826
1827 oversize:
1828 ++sky2->net_stats.rx_over_errors;
1829 goto resubmit;
1830
1831 error:
1832 ++sky2->net_stats.rx_errors;
1833
1834 if (netif_msg_rx_err(sky2) && net_ratelimit())
1835 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
1836 sky2->netdev->name, status, length);
1837
1838 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
1839 sky2->net_stats.rx_length_errors++;
1840 if (status & GMR_FS_FRAGMENT)
1841 sky2->net_stats.rx_frame_errors++;
1842 if (status & GMR_FS_CRC_ERR)
1843 sky2->net_stats.rx_crc_errors++;
1844 if (status & GMR_FS_RX_FF_OV)
1845 sky2->net_stats.rx_fifo_errors++;
1846
1847 goto resubmit;
1848 }
1849
1850 /* Transmit complete */
1851 static inline void sky2_tx_done(struct net_device *dev, u16 last)
1852 {
1853 struct sky2_port *sky2 = netdev_priv(dev);
1854
1855 if (netif_running(dev)) {
1856 spin_lock(&sky2->tx_lock);
1857 sky2_tx_complete(sky2, last);
1858 spin_unlock(&sky2->tx_lock);
1859 }
1860 }
1861
1862 /* Process status response ring */
1863 static int sky2_status_intr(struct sky2_hw *hw, int to_do)
1864 {
1865 int work_done = 0;
1866
1867 rmb();
1868
1869 for(;;) {
1870 struct sky2_status_le *le = hw->st_le + hw->st_idx;
1871 struct net_device *dev;
1872 struct sky2_port *sky2;
1873 struct sk_buff *skb;
1874 u32 status;
1875 u16 length;
1876 u8 link, opcode;
1877
1878 opcode = le->opcode;
1879 if (!opcode)
1880 break;
1881 opcode &= ~HW_OWNER;
1882
1883 hw->st_idx = (hw->st_idx + 1) % STATUS_RING_SIZE;
1884 le->opcode = 0;
1885
1886 link = le->link;
1887 BUG_ON(link >= 2);
1888 dev = hw->dev[link];
1889
1890 sky2 = netdev_priv(dev);
1891 length = le->length;
1892 status = le->status;
1893
1894 switch (opcode) {
1895 case OP_RXSTAT:
1896 skb = sky2_receive(sky2, length, status);
1897 if (!skb)
1898 break;
1899
1900 skb->dev = dev;
1901 skb->protocol = eth_type_trans(skb, dev);
1902 dev->last_rx = jiffies;
1903
1904 #ifdef SKY2_VLAN_TAG_USED
1905 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
1906 vlan_hwaccel_receive_skb(skb,
1907 sky2->vlgrp,
1908 be16_to_cpu(sky2->rx_tag));
1909 } else
1910 #endif
1911 netif_receive_skb(skb);
1912
1913 if (++work_done >= to_do)
1914 goto exit_loop;
1915 break;
1916
1917 #ifdef SKY2_VLAN_TAG_USED
1918 case OP_RXVLAN:
1919 sky2->rx_tag = length;
1920 break;
1921
1922 case OP_RXCHKSVLAN:
1923 sky2->rx_tag = length;
1924 /* fall through */
1925 #endif
1926 case OP_RXCHKS:
1927 skb = sky2->rx_ring[sky2->rx_next].skb;
1928 skb->ip_summed = CHECKSUM_HW;
1929 skb->csum = le16_to_cpu(status);
1930 break;
1931
1932 case OP_TXINDEXLE:
1933 /* TX index reports status for both ports */
1934 sky2_tx_done(hw->dev[0], status & 0xffff);
1935 if (hw->dev[1])
1936 sky2_tx_done(hw->dev[1],
1937 ((status >> 24) & 0xff)
1938 | (u16)(length & 0xf) << 8);
1939 break;
1940
1941 default:
1942 if (net_ratelimit())
1943 printk(KERN_WARNING PFX
1944 "unknown status opcode 0x%x\n", opcode);
1945 break;
1946 }
1947 }
1948
1949 exit_loop:
1950 return work_done;
1951 }
1952
1953 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
1954 {
1955 struct net_device *dev = hw->dev[port];
1956
1957 if (net_ratelimit())
1958 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
1959 dev->name, status);
1960
1961 if (status & Y2_IS_PAR_RD1) {
1962 if (net_ratelimit())
1963 printk(KERN_ERR PFX "%s: ram data read parity error\n",
1964 dev->name);
1965 /* Clear IRQ */
1966 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
1967 }
1968
1969 if (status & Y2_IS_PAR_WR1) {
1970 if (net_ratelimit())
1971 printk(KERN_ERR PFX "%s: ram data write parity error\n",
1972 dev->name);
1973
1974 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
1975 }
1976
1977 if (status & Y2_IS_PAR_MAC1) {
1978 if (net_ratelimit())
1979 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
1980 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
1981 }
1982
1983 if (status & Y2_IS_PAR_RX1) {
1984 if (net_ratelimit())
1985 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
1986 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
1987 }
1988
1989 if (status & Y2_IS_TCP_TXA1) {
1990 if (net_ratelimit())
1991 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
1992 dev->name);
1993 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
1994 }
1995 }
1996
1997 static void sky2_hw_intr(struct sky2_hw *hw)
1998 {
1999 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2000
2001 if (status & Y2_IS_TIST_OV)
2002 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2003
2004 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2005 u16 pci_err;
2006
2007 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2008 if (net_ratelimit())
2009 printk(KERN_ERR PFX "%s: pci hw error (0x%x)\n",
2010 pci_name(hw->pdev), pci_err);
2011
2012 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2013 sky2_pci_write16(hw, PCI_STATUS,
2014 pci_err | PCI_STATUS_ERROR_BITS);
2015 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2016 }
2017
2018 if (status & Y2_IS_PCI_EXP) {
2019 /* PCI-Express uncorrectable Error occurred */
2020 u32 pex_err;
2021
2022 pex_err = sky2_pci_read32(hw, PEX_UNC_ERR_STAT);
2023
2024 if (net_ratelimit())
2025 printk(KERN_ERR PFX "%s: pci express error (0x%x)\n",
2026 pci_name(hw->pdev), pex_err);
2027
2028 /* clear the interrupt */
2029 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2030 sky2_pci_write32(hw, PEX_UNC_ERR_STAT,
2031 0xffffffffUL);
2032 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2033
2034 if (pex_err & PEX_FATAL_ERRORS) {
2035 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2036 hwmsk &= ~Y2_IS_PCI_EXP;
2037 sky2_write32(hw, B0_HWE_IMSK, hwmsk);
2038 }
2039 }
2040
2041 if (status & Y2_HWE_L1_MASK)
2042 sky2_hw_error(hw, 0, status);
2043 status >>= 8;
2044 if (status & Y2_HWE_L1_MASK)
2045 sky2_hw_error(hw, 1, status);
2046 }
2047
2048 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2049 {
2050 struct net_device *dev = hw->dev[port];
2051 struct sky2_port *sky2 = netdev_priv(dev);
2052 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2053
2054 if (netif_msg_intr(sky2))
2055 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2056 dev->name, status);
2057
2058 if (status & GM_IS_RX_FF_OR) {
2059 ++sky2->net_stats.rx_fifo_errors;
2060 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2061 }
2062
2063 if (status & GM_IS_TX_FF_UR) {
2064 ++sky2->net_stats.tx_fifo_errors;
2065 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2066 }
2067 }
2068
2069 /* This should never happen it is a fatal situation */
2070 static void sky2_descriptor_error(struct sky2_hw *hw, unsigned port,
2071 const char *rxtx, u32 mask)
2072 {
2073 struct net_device *dev = hw->dev[port];
2074 struct sky2_port *sky2 = netdev_priv(dev);
2075 u32 imask;
2076
2077 printk(KERN_ERR PFX "%s: %s descriptor error (hardware problem)\n",
2078 dev ? dev->name : "<not registered>", rxtx);
2079
2080 imask = sky2_read32(hw, B0_IMSK);
2081 imask &= ~mask;
2082 sky2_write32(hw, B0_IMSK, imask);
2083
2084 if (dev) {
2085 spin_lock(&sky2->phy_lock);
2086 sky2_link_down(sky2);
2087 spin_unlock(&sky2->phy_lock);
2088 }
2089 }
2090
2091 static int sky2_poll(struct net_device *dev0, int *budget)
2092 {
2093 struct sky2_hw *hw = ((struct sky2_port *) netdev_priv(dev0))->hw;
2094 int work_limit = min(dev0->quota, *budget);
2095 int work_done = 0;
2096 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2097
2098 if (unlikely(status & ~Y2_IS_STAT_BMU)) {
2099 if (status & Y2_IS_HW_ERR)
2100 sky2_hw_intr(hw);
2101
2102 if (status & Y2_IS_IRQ_PHY1)
2103 sky2_phy_intr(hw, 0);
2104
2105 if (status & Y2_IS_IRQ_PHY2)
2106 sky2_phy_intr(hw, 1);
2107
2108 if (status & Y2_IS_IRQ_MAC1)
2109 sky2_mac_intr(hw, 0);
2110
2111 if (status & Y2_IS_IRQ_MAC2)
2112 sky2_mac_intr(hw, 1);
2113
2114 if (status & Y2_IS_CHK_RX1)
2115 sky2_descriptor_error(hw, 0, "receive", Y2_IS_CHK_RX1);
2116
2117 if (status & Y2_IS_CHK_RX2)
2118 sky2_descriptor_error(hw, 1, "receive", Y2_IS_CHK_RX2);
2119
2120 if (status & Y2_IS_CHK_TXA1)
2121 sky2_descriptor_error(hw, 0, "transmit", Y2_IS_CHK_TXA1);
2122
2123 if (status & Y2_IS_CHK_TXA2)
2124 sky2_descriptor_error(hw, 1, "transmit", Y2_IS_CHK_TXA2);
2125 }
2126
2127 if (status & Y2_IS_STAT_BMU) {
2128 work_done = sky2_status_intr(hw, work_limit);
2129 *budget -= work_done;
2130 dev0->quota -= work_done;
2131
2132 if (work_done >= work_limit)
2133 return 1;
2134
2135 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2136 }
2137
2138 netif_rx_complete(dev0);
2139
2140 status = sky2_read32(hw, B0_Y2_SP_LISR);
2141 return 0;
2142 }
2143
2144 static irqreturn_t sky2_intr(int irq, void *dev_id, struct pt_regs *regs)
2145 {
2146 struct sky2_hw *hw = dev_id;
2147 struct net_device *dev0 = hw->dev[0];
2148 u32 status;
2149
2150 /* Reading this mask interrupts as side effect */
2151 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2152 if (status == 0 || status == ~0)
2153 return IRQ_NONE;
2154
2155 prefetch(&hw->st_le[hw->st_idx]);
2156 if (likely(__netif_rx_schedule_prep(dev0)))
2157 __netif_rx_schedule(dev0);
2158 else
2159 printk(KERN_DEBUG PFX "irq race detected\n");
2160
2161 return IRQ_HANDLED;
2162 }
2163
2164 #ifdef CONFIG_NET_POLL_CONTROLLER
2165 static void sky2_netpoll(struct net_device *dev)
2166 {
2167 struct sky2_port *sky2 = netdev_priv(dev);
2168
2169 sky2_intr(sky2->hw->pdev->irq, sky2->hw, NULL);
2170 }
2171 #endif
2172
2173 /* Chip internal frequency for clock calculations */
2174 static inline u32 sky2_mhz(const struct sky2_hw *hw)
2175 {
2176 switch (hw->chip_id) {
2177 case CHIP_ID_YUKON_EC:
2178 case CHIP_ID_YUKON_EC_U:
2179 return 125; /* 125 Mhz */
2180 case CHIP_ID_YUKON_FE:
2181 return 100; /* 100 Mhz */
2182 default: /* YUKON_XL */
2183 return 156; /* 156 Mhz */
2184 }
2185 }
2186
2187 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2188 {
2189 return sky2_mhz(hw) * us;
2190 }
2191
2192 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2193 {
2194 return clk / sky2_mhz(hw);
2195 }
2196
2197
2198 static int sky2_reset(struct sky2_hw *hw)
2199 {
2200 u16 status;
2201 u8 t8, pmd_type;
2202 int i;
2203
2204 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2205
2206 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2207 if (hw->chip_id < CHIP_ID_YUKON_XL || hw->chip_id > CHIP_ID_YUKON_FE) {
2208 printk(KERN_ERR PFX "%s: unsupported chip type 0x%x\n",
2209 pci_name(hw->pdev), hw->chip_id);
2210 return -EOPNOTSUPP;
2211 }
2212
2213 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2214
2215 /* This rev is really old, and requires untested workarounds */
2216 if (hw->chip_id == CHIP_ID_YUKON_EC && hw->chip_rev == CHIP_REV_YU_EC_A1) {
2217 printk(KERN_ERR PFX "%s: unsupported revision Yukon-%s (0x%x) rev %d\n",
2218 pci_name(hw->pdev), yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
2219 hw->chip_id, hw->chip_rev);
2220 return -EOPNOTSUPP;
2221 }
2222
2223 /* This chip is new and not tested yet */
2224 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
2225 pr_info(PFX "%s: is a version of Yukon 2 chipset that has not been tested yet.\n",
2226 pci_name(hw->pdev));
2227 pr_info("Please report success/failure to maintainer <shemminger@osdl.org>\n");
2228 }
2229
2230 /* disable ASF */
2231 if (hw->chip_id <= CHIP_ID_YUKON_EC) {
2232 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2233 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2234 }
2235
2236 /* do a SW reset */
2237 sky2_write8(hw, B0_CTST, CS_RST_SET);
2238 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2239
2240 /* clear PCI errors, if any */
2241 status = sky2_pci_read16(hw, PCI_STATUS);
2242
2243 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2244 sky2_pci_write16(hw, PCI_STATUS, status | PCI_STATUS_ERROR_BITS);
2245
2246
2247 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2248
2249 /* clear any PEX errors */
2250 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
2251 sky2_pci_write32(hw, PEX_UNC_ERR_STAT, 0xffffffffUL);
2252
2253
2254 pmd_type = sky2_read8(hw, B2_PMD_TYP);
2255 hw->copper = !(pmd_type == 'L' || pmd_type == 'S');
2256
2257 hw->ports = 1;
2258 t8 = sky2_read8(hw, B2_Y2_HW_RES);
2259 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
2260 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2261 ++hw->ports;
2262 }
2263
2264 sky2_set_power_state(hw, PCI_D0);
2265
2266 for (i = 0; i < hw->ports; i++) {
2267 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2268 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2269 }
2270
2271 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2272
2273 /* Clear I2C IRQ noise */
2274 sky2_write32(hw, B2_I2C_IRQ, 1);
2275
2276 /* turn off hardware timer (unused) */
2277 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2278 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
2279
2280 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
2281
2282 /* Turn off descriptor polling */
2283 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
2284
2285 /* Turn off receive timestamp */
2286 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
2287 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2288
2289 /* enable the Tx Arbiters */
2290 for (i = 0; i < hw->ports; i++)
2291 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
2292
2293 /* Initialize ram interface */
2294 for (i = 0; i < hw->ports; i++) {
2295 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
2296
2297 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
2298 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
2299 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
2300 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
2301 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
2302 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
2303 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
2304 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
2305 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
2306 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
2307 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
2308 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
2309 }
2310
2311 sky2_write32(hw, B0_HWE_IMSK, Y2_HWE_ALL_MASK);
2312
2313 for (i = 0; i < hw->ports; i++)
2314 sky2_phy_reset(hw, i);
2315
2316 memset(hw->st_le, 0, STATUS_LE_BYTES);
2317 hw->st_idx = 0;
2318
2319 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
2320 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
2321
2322 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
2323 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
2324
2325 /* Set the list last index */
2326 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
2327
2328 sky2_write16(hw, STAT_TX_IDX_TH, 10);
2329 sky2_write8(hw, STAT_FIFO_WM, 16);
2330
2331 /* set Status-FIFO ISR watermark */
2332 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
2333 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
2334 else
2335 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
2336
2337 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
2338 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
2339 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
2340
2341 /* enable status unit */
2342 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
2343
2344 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2345 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2346 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2347
2348 return 0;
2349 }
2350
2351 static u32 sky2_supported_modes(const struct sky2_hw *hw)
2352 {
2353 u32 modes;
2354 if (hw->copper) {
2355 modes = SUPPORTED_10baseT_Half
2356 | SUPPORTED_10baseT_Full
2357 | SUPPORTED_100baseT_Half
2358 | SUPPORTED_100baseT_Full
2359 | SUPPORTED_Autoneg | SUPPORTED_TP;
2360
2361 if (hw->chip_id != CHIP_ID_YUKON_FE)
2362 modes |= SUPPORTED_1000baseT_Half
2363 | SUPPORTED_1000baseT_Full;
2364 } else
2365 modes = SUPPORTED_1000baseT_Full | SUPPORTED_FIBRE
2366 | SUPPORTED_Autoneg;
2367 return modes;
2368 }
2369
2370 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2371 {
2372 struct sky2_port *sky2 = netdev_priv(dev);
2373 struct sky2_hw *hw = sky2->hw;
2374
2375 ecmd->transceiver = XCVR_INTERNAL;
2376 ecmd->supported = sky2_supported_modes(hw);
2377 ecmd->phy_address = PHY_ADDR_MARV;
2378 if (hw->copper) {
2379 ecmd->supported = SUPPORTED_10baseT_Half
2380 | SUPPORTED_10baseT_Full
2381 | SUPPORTED_100baseT_Half
2382 | SUPPORTED_100baseT_Full
2383 | SUPPORTED_1000baseT_Half
2384 | SUPPORTED_1000baseT_Full
2385 | SUPPORTED_Autoneg | SUPPORTED_TP;
2386 ecmd->port = PORT_TP;
2387 } else
2388 ecmd->port = PORT_FIBRE;
2389
2390 ecmd->advertising = sky2->advertising;
2391 ecmd->autoneg = sky2->autoneg;
2392 ecmd->speed = sky2->speed;
2393 ecmd->duplex = sky2->duplex;
2394 return 0;
2395 }
2396
2397 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2398 {
2399 struct sky2_port *sky2 = netdev_priv(dev);
2400 const struct sky2_hw *hw = sky2->hw;
2401 u32 supported = sky2_supported_modes(hw);
2402
2403 if (ecmd->autoneg == AUTONEG_ENABLE) {
2404 ecmd->advertising = supported;
2405 sky2->duplex = -1;
2406 sky2->speed = -1;
2407 } else {
2408 u32 setting;
2409
2410 switch (ecmd->speed) {
2411 case SPEED_1000:
2412 if (ecmd->duplex == DUPLEX_FULL)
2413 setting = SUPPORTED_1000baseT_Full;
2414 else if (ecmd->duplex == DUPLEX_HALF)
2415 setting = SUPPORTED_1000baseT_Half;
2416 else
2417 return -EINVAL;
2418 break;
2419 case SPEED_100:
2420 if (ecmd->duplex == DUPLEX_FULL)
2421 setting = SUPPORTED_100baseT_Full;
2422 else if (ecmd->duplex == DUPLEX_HALF)
2423 setting = SUPPORTED_100baseT_Half;
2424 else
2425 return -EINVAL;
2426 break;
2427
2428 case SPEED_10:
2429 if (ecmd->duplex == DUPLEX_FULL)
2430 setting = SUPPORTED_10baseT_Full;
2431 else if (ecmd->duplex == DUPLEX_HALF)
2432 setting = SUPPORTED_10baseT_Half;
2433 else
2434 return -EINVAL;
2435 break;
2436 default:
2437 return -EINVAL;
2438 }
2439
2440 if ((setting & supported) == 0)
2441 return -EINVAL;
2442
2443 sky2->speed = ecmd->speed;
2444 sky2->duplex = ecmd->duplex;
2445 }
2446
2447 sky2->autoneg = ecmd->autoneg;
2448 sky2->advertising = ecmd->advertising;
2449
2450 if (netif_running(dev))
2451 sky2_phy_reinit(sky2);
2452
2453 return 0;
2454 }
2455
2456 static void sky2_get_drvinfo(struct net_device *dev,
2457 struct ethtool_drvinfo *info)
2458 {
2459 struct sky2_port *sky2 = netdev_priv(dev);
2460
2461 strcpy(info->driver, DRV_NAME);
2462 strcpy(info->version, DRV_VERSION);
2463 strcpy(info->fw_version, "N/A");
2464 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
2465 }
2466
2467 static const struct sky2_stat {
2468 char name[ETH_GSTRING_LEN];
2469 u16 offset;
2470 } sky2_stats[] = {
2471 { "tx_bytes", GM_TXO_OK_HI },
2472 { "rx_bytes", GM_RXO_OK_HI },
2473 { "tx_broadcast", GM_TXF_BC_OK },
2474 { "rx_broadcast", GM_RXF_BC_OK },
2475 { "tx_multicast", GM_TXF_MC_OK },
2476 { "rx_multicast", GM_RXF_MC_OK },
2477 { "tx_unicast", GM_TXF_UC_OK },
2478 { "rx_unicast", GM_RXF_UC_OK },
2479 { "tx_mac_pause", GM_TXF_MPAUSE },
2480 { "rx_mac_pause", GM_RXF_MPAUSE },
2481 { "collisions", GM_TXF_COL },
2482 { "late_collision",GM_TXF_LAT_COL },
2483 { "aborted", GM_TXF_ABO_COL },
2484 { "single_collisions", GM_TXF_SNG_COL },
2485 { "multi_collisions", GM_TXF_MUL_COL },
2486
2487 { "rx_short", GM_RXF_SHT },
2488 { "rx_runt", GM_RXE_FRAG },
2489 { "rx_64_byte_packets", GM_RXF_64B },
2490 { "rx_65_to_127_byte_packets", GM_RXF_127B },
2491 { "rx_128_to_255_byte_packets", GM_RXF_255B },
2492 { "rx_256_to_511_byte_packets", GM_RXF_511B },
2493 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
2494 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
2495 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
2496 { "rx_too_long", GM_RXF_LNG_ERR },
2497 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
2498 { "rx_jabber", GM_RXF_JAB_PKT },
2499 { "rx_fcs_error", GM_RXF_FCS_ERR },
2500
2501 { "tx_64_byte_packets", GM_TXF_64B },
2502 { "tx_65_to_127_byte_packets", GM_TXF_127B },
2503 { "tx_128_to_255_byte_packets", GM_TXF_255B },
2504 { "tx_256_to_511_byte_packets", GM_TXF_511B },
2505 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
2506 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
2507 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
2508 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
2509 };
2510
2511 static u32 sky2_get_rx_csum(struct net_device *dev)
2512 {
2513 struct sky2_port *sky2 = netdev_priv(dev);
2514
2515 return sky2->rx_csum;
2516 }
2517
2518 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
2519 {
2520 struct sky2_port *sky2 = netdev_priv(dev);
2521
2522 sky2->rx_csum = data;
2523
2524 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2525 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
2526
2527 return 0;
2528 }
2529
2530 static u32 sky2_get_msglevel(struct net_device *netdev)
2531 {
2532 struct sky2_port *sky2 = netdev_priv(netdev);
2533 return sky2->msg_enable;
2534 }
2535
2536 static int sky2_nway_reset(struct net_device *dev)
2537 {
2538 struct sky2_port *sky2 = netdev_priv(dev);
2539
2540 if (sky2->autoneg != AUTONEG_ENABLE)
2541 return -EINVAL;
2542
2543 sky2_phy_reinit(sky2);
2544
2545 return 0;
2546 }
2547
2548 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
2549 {
2550 struct sky2_hw *hw = sky2->hw;
2551 unsigned port = sky2->port;
2552 int i;
2553
2554 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
2555 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
2556 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
2557 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
2558
2559 for (i = 2; i < count; i++)
2560 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
2561 }
2562
2563 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
2564 {
2565 struct sky2_port *sky2 = netdev_priv(netdev);
2566 sky2->msg_enable = value;
2567 }
2568
2569 static int sky2_get_stats_count(struct net_device *dev)
2570 {
2571 return ARRAY_SIZE(sky2_stats);
2572 }
2573
2574 static void sky2_get_ethtool_stats(struct net_device *dev,
2575 struct ethtool_stats *stats, u64 * data)
2576 {
2577 struct sky2_port *sky2 = netdev_priv(dev);
2578
2579 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
2580 }
2581
2582 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
2583 {
2584 int i;
2585
2586 switch (stringset) {
2587 case ETH_SS_STATS:
2588 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
2589 memcpy(data + i * ETH_GSTRING_LEN,
2590 sky2_stats[i].name, ETH_GSTRING_LEN);
2591 break;
2592 }
2593 }
2594
2595 /* Use hardware MIB variables for critical path statistics and
2596 * transmit feedback not reported at interrupt.
2597 * Other errors are accounted for in interrupt handler.
2598 */
2599 static struct net_device_stats *sky2_get_stats(struct net_device *dev)
2600 {
2601 struct sky2_port *sky2 = netdev_priv(dev);
2602 u64 data[13];
2603
2604 sky2_phy_stats(sky2, data, ARRAY_SIZE(data));
2605
2606 sky2->net_stats.tx_bytes = data[0];
2607 sky2->net_stats.rx_bytes = data[1];
2608 sky2->net_stats.tx_packets = data[2] + data[4] + data[6];
2609 sky2->net_stats.rx_packets = data[3] + data[5] + data[7];
2610 sky2->net_stats.multicast = data[3] + data[5];
2611 sky2->net_stats.collisions = data[10];
2612 sky2->net_stats.tx_aborted_errors = data[12];
2613
2614 return &sky2->net_stats;
2615 }
2616
2617 static int sky2_set_mac_address(struct net_device *dev, void *p)
2618 {
2619 struct sky2_port *sky2 = netdev_priv(dev);
2620 struct sky2_hw *hw = sky2->hw;
2621 unsigned port = sky2->port;
2622 const struct sockaddr *addr = p;
2623
2624 if (!is_valid_ether_addr(addr->sa_data))
2625 return -EADDRNOTAVAIL;
2626
2627 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
2628 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
2629 dev->dev_addr, ETH_ALEN);
2630 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
2631 dev->dev_addr, ETH_ALEN);
2632
2633 /* virtual address for data */
2634 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
2635
2636 /* physical address: used for pause frames */
2637 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
2638
2639 return 0;
2640 }
2641
2642 static void sky2_set_multicast(struct net_device *dev)
2643 {
2644 struct sky2_port *sky2 = netdev_priv(dev);
2645 struct sky2_hw *hw = sky2->hw;
2646 unsigned port = sky2->port;
2647 struct dev_mc_list *list = dev->mc_list;
2648 u16 reg;
2649 u8 filter[8];
2650
2651 memset(filter, 0, sizeof(filter));
2652
2653 reg = gma_read16(hw, port, GM_RX_CTRL);
2654 reg |= GM_RXCR_UCF_ENA;
2655
2656 if (dev->flags & IFF_PROMISC) /* promiscuous */
2657 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
2658 else if ((dev->flags & IFF_ALLMULTI) || dev->mc_count > 16) /* all multicast */
2659 memset(filter, 0xff, sizeof(filter));
2660 else if (dev->mc_count == 0) /* no multicast */
2661 reg &= ~GM_RXCR_MCF_ENA;
2662 else {
2663 int i;
2664 reg |= GM_RXCR_MCF_ENA;
2665
2666 for (i = 0; list && i < dev->mc_count; i++, list = list->next) {
2667 u32 bit = ether_crc(ETH_ALEN, list->dmi_addr) & 0x3f;
2668 filter[bit / 8] |= 1 << (bit % 8);
2669 }
2670 }
2671
2672 gma_write16(hw, port, GM_MC_ADDR_H1,
2673 (u16) filter[0] | ((u16) filter[1] << 8));
2674 gma_write16(hw, port, GM_MC_ADDR_H2,
2675 (u16) filter[2] | ((u16) filter[3] << 8));
2676 gma_write16(hw, port, GM_MC_ADDR_H3,
2677 (u16) filter[4] | ((u16) filter[5] << 8));
2678 gma_write16(hw, port, GM_MC_ADDR_H4,
2679 (u16) filter[6] | ((u16) filter[7] << 8));
2680
2681 gma_write16(hw, port, GM_RX_CTRL, reg);
2682 }
2683
2684 /* Can have one global because blinking is controlled by
2685 * ethtool and that is always under RTNL mutex
2686 */
2687 static void sky2_led(struct sky2_hw *hw, unsigned port, int on)
2688 {
2689 u16 pg;
2690
2691 switch (hw->chip_id) {
2692 case CHIP_ID_YUKON_XL:
2693 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2694 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2695 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
2696 on ? (PHY_M_LEDC_LOS_CTRL(1) |
2697 PHY_M_LEDC_INIT_CTRL(7) |
2698 PHY_M_LEDC_STA1_CTRL(7) |
2699 PHY_M_LEDC_STA0_CTRL(7))
2700 : 0);
2701
2702 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2703 break;
2704
2705 default:
2706 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
2707 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
2708 on ? PHY_M_LED_MO_DUP(MO_LED_ON) |
2709 PHY_M_LED_MO_10(MO_LED_ON) |
2710 PHY_M_LED_MO_100(MO_LED_ON) |
2711 PHY_M_LED_MO_1000(MO_LED_ON) |
2712 PHY_M_LED_MO_RX(MO_LED_ON)
2713 : PHY_M_LED_MO_DUP(MO_LED_OFF) |
2714 PHY_M_LED_MO_10(MO_LED_OFF) |
2715 PHY_M_LED_MO_100(MO_LED_OFF) |
2716 PHY_M_LED_MO_1000(MO_LED_OFF) |
2717 PHY_M_LED_MO_RX(MO_LED_OFF));
2718
2719 }
2720 }
2721
2722 /* blink LED's for finding board */
2723 static int sky2_phys_id(struct net_device *dev, u32 data)
2724 {
2725 struct sky2_port *sky2 = netdev_priv(dev);
2726 struct sky2_hw *hw = sky2->hw;
2727 unsigned port = sky2->port;
2728 u16 ledctrl, ledover = 0;
2729 long ms;
2730 int interrupted;
2731 int onoff = 1;
2732
2733 if (!data || data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ))
2734 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT);
2735 else
2736 ms = data * 1000;
2737
2738 /* save initial values */
2739 spin_lock_bh(&sky2->phy_lock);
2740 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2741 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2742 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2743 ledctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
2744 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2745 } else {
2746 ledctrl = gm_phy_read(hw, port, PHY_MARV_LED_CTRL);
2747 ledover = gm_phy_read(hw, port, PHY_MARV_LED_OVER);
2748 }
2749
2750 interrupted = 0;
2751 while (!interrupted && ms > 0) {
2752 sky2_led(hw, port, onoff);
2753 onoff = !onoff;
2754
2755 spin_unlock_bh(&sky2->phy_lock);
2756 interrupted = msleep_interruptible(250);
2757 spin_lock_bh(&sky2->phy_lock);
2758
2759 ms -= 250;
2760 }
2761
2762 /* resume regularly scheduled programming */
2763 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2764 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2765 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2766 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ledctrl);
2767 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2768 } else {
2769 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
2770 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
2771 }
2772 spin_unlock_bh(&sky2->phy_lock);
2773
2774 return 0;
2775 }
2776
2777 static void sky2_get_pauseparam(struct net_device *dev,
2778 struct ethtool_pauseparam *ecmd)
2779 {
2780 struct sky2_port *sky2 = netdev_priv(dev);
2781
2782 ecmd->tx_pause = sky2->tx_pause;
2783 ecmd->rx_pause = sky2->rx_pause;
2784 ecmd->autoneg = sky2->autoneg;
2785 }
2786
2787 static int sky2_set_pauseparam(struct net_device *dev,
2788 struct ethtool_pauseparam *ecmd)
2789 {
2790 struct sky2_port *sky2 = netdev_priv(dev);
2791 int err = 0;
2792
2793 sky2->autoneg = ecmd->autoneg;
2794 sky2->tx_pause = ecmd->tx_pause != 0;
2795 sky2->rx_pause = ecmd->rx_pause != 0;
2796
2797 sky2_phy_reinit(sky2);
2798
2799 return err;
2800 }
2801
2802 static int sky2_get_coalesce(struct net_device *dev,
2803 struct ethtool_coalesce *ecmd)
2804 {
2805 struct sky2_port *sky2 = netdev_priv(dev);
2806 struct sky2_hw *hw = sky2->hw;
2807
2808 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
2809 ecmd->tx_coalesce_usecs = 0;
2810 else {
2811 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
2812 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
2813 }
2814 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
2815
2816 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
2817 ecmd->rx_coalesce_usecs = 0;
2818 else {
2819 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
2820 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
2821 }
2822 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
2823
2824 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
2825 ecmd->rx_coalesce_usecs_irq = 0;
2826 else {
2827 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
2828 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
2829 }
2830
2831 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
2832
2833 return 0;
2834 }
2835
2836 /* Note: this affect both ports */
2837 static int sky2_set_coalesce(struct net_device *dev,
2838 struct ethtool_coalesce *ecmd)
2839 {
2840 struct sky2_port *sky2 = netdev_priv(dev);
2841 struct sky2_hw *hw = sky2->hw;
2842 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
2843
2844 if (ecmd->tx_coalesce_usecs > tmax ||
2845 ecmd->rx_coalesce_usecs > tmax ||
2846 ecmd->rx_coalesce_usecs_irq > tmax)
2847 return -EINVAL;
2848
2849 if (ecmd->tx_max_coalesced_frames >= TX_RING_SIZE-1)
2850 return -EINVAL;
2851 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
2852 return -EINVAL;
2853 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
2854 return -EINVAL;
2855
2856 if (ecmd->tx_coalesce_usecs == 0)
2857 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
2858 else {
2859 sky2_write32(hw, STAT_TX_TIMER_INI,
2860 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
2861 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2862 }
2863 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
2864
2865 if (ecmd->rx_coalesce_usecs == 0)
2866 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
2867 else {
2868 sky2_write32(hw, STAT_LEV_TIMER_INI,
2869 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
2870 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2871 }
2872 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
2873
2874 if (ecmd->rx_coalesce_usecs_irq == 0)
2875 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
2876 else {
2877 sky2_write32(hw, STAT_ISR_TIMER_INI,
2878 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
2879 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2880 }
2881 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
2882 return 0;
2883 }
2884
2885 static void sky2_get_ringparam(struct net_device *dev,
2886 struct ethtool_ringparam *ering)
2887 {
2888 struct sky2_port *sky2 = netdev_priv(dev);
2889
2890 ering->rx_max_pending = RX_MAX_PENDING;
2891 ering->rx_mini_max_pending = 0;
2892 ering->rx_jumbo_max_pending = 0;
2893 ering->tx_max_pending = TX_RING_SIZE - 1;
2894
2895 ering->rx_pending = sky2->rx_pending;
2896 ering->rx_mini_pending = 0;
2897 ering->rx_jumbo_pending = 0;
2898 ering->tx_pending = sky2->tx_pending;
2899 }
2900
2901 static int sky2_set_ringparam(struct net_device *dev,
2902 struct ethtool_ringparam *ering)
2903 {
2904 struct sky2_port *sky2 = netdev_priv(dev);
2905 int err = 0;
2906
2907 if (ering->rx_pending > RX_MAX_PENDING ||
2908 ering->rx_pending < 8 ||
2909 ering->tx_pending < MAX_SKB_TX_LE ||
2910 ering->tx_pending > TX_RING_SIZE - 1)
2911 return -EINVAL;
2912
2913 if (netif_running(dev))
2914 sky2_down(dev);
2915
2916 sky2->rx_pending = ering->rx_pending;
2917 sky2->tx_pending = ering->tx_pending;
2918
2919 if (netif_running(dev)) {
2920 err = sky2_up(dev);
2921 if (err)
2922 dev_close(dev);
2923 else
2924 sky2_set_multicast(dev);
2925 }
2926
2927 return err;
2928 }
2929
2930 static int sky2_get_regs_len(struct net_device *dev)
2931 {
2932 return 0x4000;
2933 }
2934
2935 /*
2936 * Returns copy of control register region
2937 * Note: access to the RAM address register set will cause timeouts.
2938 */
2939 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
2940 void *p)
2941 {
2942 const struct sky2_port *sky2 = netdev_priv(dev);
2943 const void __iomem *io = sky2->hw->regs;
2944
2945 BUG_ON(regs->len < B3_RI_WTO_R1);
2946 regs->version = 1;
2947 memset(p, 0, regs->len);
2948
2949 memcpy_fromio(p, io, B3_RAM_ADDR);
2950
2951 memcpy_fromio(p + B3_RI_WTO_R1,
2952 io + B3_RI_WTO_R1,
2953 regs->len - B3_RI_WTO_R1);
2954 }
2955
2956 static struct ethtool_ops sky2_ethtool_ops = {
2957 .get_settings = sky2_get_settings,
2958 .set_settings = sky2_set_settings,
2959 .get_drvinfo = sky2_get_drvinfo,
2960 .get_msglevel = sky2_get_msglevel,
2961 .set_msglevel = sky2_set_msglevel,
2962 .nway_reset = sky2_nway_reset,
2963 .get_regs_len = sky2_get_regs_len,
2964 .get_regs = sky2_get_regs,
2965 .get_link = ethtool_op_get_link,
2966 .get_sg = ethtool_op_get_sg,
2967 .set_sg = ethtool_op_set_sg,
2968 .get_tx_csum = ethtool_op_get_tx_csum,
2969 .set_tx_csum = ethtool_op_set_tx_csum,
2970 .get_tso = ethtool_op_get_tso,
2971 .set_tso = ethtool_op_set_tso,
2972 .get_rx_csum = sky2_get_rx_csum,
2973 .set_rx_csum = sky2_set_rx_csum,
2974 .get_strings = sky2_get_strings,
2975 .get_coalesce = sky2_get_coalesce,
2976 .set_coalesce = sky2_set_coalesce,
2977 .get_ringparam = sky2_get_ringparam,
2978 .set_ringparam = sky2_set_ringparam,
2979 .get_pauseparam = sky2_get_pauseparam,
2980 .set_pauseparam = sky2_set_pauseparam,
2981 .phys_id = sky2_phys_id,
2982 .get_stats_count = sky2_get_stats_count,
2983 .get_ethtool_stats = sky2_get_ethtool_stats,
2984 .get_perm_addr = ethtool_op_get_perm_addr,
2985 };
2986
2987 /* Initialize network device */
2988 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
2989 unsigned port, int highmem)
2990 {
2991 struct sky2_port *sky2;
2992 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
2993
2994 if (!dev) {
2995 printk(KERN_ERR "sky2 etherdev alloc failed");
2996 return NULL;
2997 }
2998
2999 SET_MODULE_OWNER(dev);
3000 SET_NETDEV_DEV(dev, &hw->pdev->dev);
3001 dev->irq = hw->pdev->irq;
3002 dev->open = sky2_up;
3003 dev->stop = sky2_down;
3004 dev->do_ioctl = sky2_ioctl;
3005 dev->hard_start_xmit = sky2_xmit_frame;
3006 dev->get_stats = sky2_get_stats;
3007 dev->set_multicast_list = sky2_set_multicast;
3008 dev->set_mac_address = sky2_set_mac_address;
3009 dev->change_mtu = sky2_change_mtu;
3010 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
3011 dev->tx_timeout = sky2_tx_timeout;
3012 dev->watchdog_timeo = TX_WATCHDOG;
3013 if (port == 0)
3014 dev->poll = sky2_poll;
3015 dev->weight = NAPI_WEIGHT;
3016 #ifdef CONFIG_NET_POLL_CONTROLLER
3017 dev->poll_controller = sky2_netpoll;
3018 #endif
3019
3020 sky2 = netdev_priv(dev);
3021 sky2->netdev = dev;
3022 sky2->hw = hw;
3023 sky2->msg_enable = netif_msg_init(debug, default_msg);
3024
3025 spin_lock_init(&sky2->tx_lock);
3026 /* Auto speed and flow control */
3027 sky2->autoneg = AUTONEG_ENABLE;
3028 sky2->tx_pause = 1;
3029 sky2->rx_pause = 1;
3030 sky2->duplex = -1;
3031 sky2->speed = -1;
3032 sky2->advertising = sky2_supported_modes(hw);
3033
3034 /* Receive checksum disabled for Yukon XL
3035 * because of observed problems with incorrect
3036 * values when multiple packets are received in one interrupt
3037 */
3038 sky2->rx_csum = (hw->chip_id != CHIP_ID_YUKON_XL);
3039
3040 spin_lock_init(&sky2->phy_lock);
3041 sky2->tx_pending = TX_DEF_PENDING;
3042 sky2->rx_pending = RX_DEF_PENDING;
3043 sky2->rx_bufsize = sky2_buf_size(ETH_DATA_LEN);
3044
3045 hw->dev[port] = dev;
3046
3047 sky2->port = port;
3048
3049 dev->features |= NETIF_F_LLTX;
3050 if (hw->chip_id != CHIP_ID_YUKON_EC_U)
3051 dev->features |= NETIF_F_TSO;
3052 if (highmem)
3053 dev->features |= NETIF_F_HIGHDMA;
3054 dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
3055
3056 #ifdef SKY2_VLAN_TAG_USED
3057 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
3058 dev->vlan_rx_register = sky2_vlan_rx_register;
3059 dev->vlan_rx_kill_vid = sky2_vlan_rx_kill_vid;
3060 #endif
3061
3062 /* read the mac address */
3063 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
3064 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
3065
3066 /* device is off until link detection */
3067 netif_carrier_off(dev);
3068 netif_stop_queue(dev);
3069
3070 return dev;
3071 }
3072
3073 static void __devinit sky2_show_addr(struct net_device *dev)
3074 {
3075 const struct sky2_port *sky2 = netdev_priv(dev);
3076
3077 if (netif_msg_probe(sky2))
3078 printk(KERN_INFO PFX "%s: addr %02x:%02x:%02x:%02x:%02x:%02x\n",
3079 dev->name,
3080 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
3081 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
3082 }
3083
3084 /* Handle software interrupt used during MSI test */
3085 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id,
3086 struct pt_regs *regs)
3087 {
3088 struct sky2_hw *hw = dev_id;
3089 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
3090
3091 if (status == 0)
3092 return IRQ_NONE;
3093
3094 if (status & Y2_IS_IRQ_SW) {
3095 hw->msi_detected = 1;
3096 wake_up(&hw->msi_wait);
3097 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3098 }
3099 sky2_write32(hw, B0_Y2_SP_ICR, 2);
3100
3101 return IRQ_HANDLED;
3102 }
3103
3104 /* Test interrupt path by forcing a a software IRQ */
3105 static int __devinit sky2_test_msi(struct sky2_hw *hw)
3106 {
3107 struct pci_dev *pdev = hw->pdev;
3108 int err;
3109
3110 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
3111
3112 err = request_irq(pdev->irq, sky2_test_intr, SA_SHIRQ, DRV_NAME, hw);
3113 if (err) {
3114 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3115 pci_name(pdev), pdev->irq);
3116 return err;
3117 }
3118
3119 init_waitqueue_head (&hw->msi_wait);
3120
3121 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
3122 wmb();
3123
3124 wait_event_timeout(hw->msi_wait, hw->msi_detected, HZ/10);
3125
3126 if (!hw->msi_detected) {
3127 /* MSI test failed, go back to INTx mode */
3128 printk(KERN_WARNING PFX "%s: No interrupt was generated using MSI, "
3129 "switching to INTx mode. Please report this failure to "
3130 "the PCI maintainer and include system chipset information.\n",
3131 pci_name(pdev));
3132
3133 err = -EOPNOTSUPP;
3134 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3135 }
3136
3137 sky2_write32(hw, B0_IMSK, 0);
3138
3139 free_irq(pdev->irq, hw);
3140
3141 return err;
3142 }
3143
3144 static int __devinit sky2_probe(struct pci_dev *pdev,
3145 const struct pci_device_id *ent)
3146 {
3147 struct net_device *dev, *dev1 = NULL;
3148 struct sky2_hw *hw;
3149 int err, pm_cap, using_dac = 0;
3150
3151 err = pci_enable_device(pdev);
3152 if (err) {
3153 printk(KERN_ERR PFX "%s cannot enable PCI device\n",
3154 pci_name(pdev));
3155 goto err_out;
3156 }
3157
3158 err = pci_request_regions(pdev, DRV_NAME);
3159 if (err) {
3160 printk(KERN_ERR PFX "%s cannot obtain PCI resources\n",
3161 pci_name(pdev));
3162 goto err_out;
3163 }
3164
3165 pci_set_master(pdev);
3166
3167 /* Find power-management capability. */
3168 pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
3169 if (pm_cap == 0) {
3170 printk(KERN_ERR PFX "Cannot find PowerManagement capability, "
3171 "aborting.\n");
3172 err = -EIO;
3173 goto err_out_free_regions;
3174 }
3175
3176 if (sizeof(dma_addr_t) > sizeof(u32) &&
3177 !(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
3178 using_dac = 1;
3179 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3180 if (err < 0) {
3181 printk(KERN_ERR PFX "%s unable to obtain 64 bit DMA "
3182 "for consistent allocations\n", pci_name(pdev));
3183 goto err_out_free_regions;
3184 }
3185
3186 } else {
3187 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
3188 if (err) {
3189 printk(KERN_ERR PFX "%s no usable DMA configuration\n",
3190 pci_name(pdev));
3191 goto err_out_free_regions;
3192 }
3193 }
3194
3195 err = -ENOMEM;
3196 hw = kzalloc(sizeof(*hw), GFP_KERNEL);
3197 if (!hw) {
3198 printk(KERN_ERR PFX "%s: cannot allocate hardware struct\n",
3199 pci_name(pdev));
3200 goto err_out_free_regions;
3201 }
3202
3203 hw->pdev = pdev;
3204
3205 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
3206 if (!hw->regs) {
3207 printk(KERN_ERR PFX "%s: cannot map device registers\n",
3208 pci_name(pdev));
3209 goto err_out_free_hw;
3210 }
3211 hw->pm_cap = pm_cap;
3212
3213 #ifdef __BIG_ENDIAN
3214 /* byte swap descriptors in hardware */
3215 {
3216 u32 reg;
3217
3218 reg = sky2_pci_read32(hw, PCI_DEV_REG2);
3219 reg |= PCI_REV_DESC;
3220 sky2_pci_write32(hw, PCI_DEV_REG2, reg);
3221 }
3222 #endif
3223
3224 /* ring for status responses */
3225 hw->st_le = pci_alloc_consistent(hw->pdev, STATUS_LE_BYTES,
3226 &hw->st_dma);
3227 if (!hw->st_le)
3228 goto err_out_iounmap;
3229
3230 err = sky2_reset(hw);
3231 if (err)
3232 goto err_out_iounmap;
3233
3234 printk(KERN_INFO PFX "v%s addr 0x%lx irq %d Yukon-%s (0x%x) rev %d\n",
3235 DRV_VERSION, pci_resource_start(pdev, 0), pdev->irq,
3236 yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
3237 hw->chip_id, hw->chip_rev);
3238
3239 dev = sky2_init_netdev(hw, 0, using_dac);
3240 if (!dev)
3241 goto err_out_free_pci;
3242
3243 err = register_netdev(dev);
3244 if (err) {
3245 printk(KERN_ERR PFX "%s: cannot register net device\n",
3246 pci_name(pdev));
3247 goto err_out_free_netdev;
3248 }
3249
3250 sky2_show_addr(dev);
3251
3252 if (hw->ports > 1 && (dev1 = sky2_init_netdev(hw, 1, using_dac))) {
3253 if (register_netdev(dev1) == 0)
3254 sky2_show_addr(dev1);
3255 else {
3256 /* Failure to register second port need not be fatal */
3257 printk(KERN_WARNING PFX
3258 "register of second port failed\n");
3259 hw->dev[1] = NULL;
3260 free_netdev(dev1);
3261 }
3262 }
3263
3264 if (!disable_msi && pci_enable_msi(pdev) == 0) {
3265 err = sky2_test_msi(hw);
3266 if (err == -EOPNOTSUPP)
3267 pci_disable_msi(pdev);
3268 else if (err)
3269 goto err_out_unregister;
3270 }
3271
3272 err = request_irq(pdev->irq, sky2_intr, SA_SHIRQ, DRV_NAME, hw);
3273 if (err) {
3274 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3275 pci_name(pdev), pdev->irq);
3276 goto err_out_unregister;
3277 }
3278
3279 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3280
3281 pci_set_drvdata(pdev, hw);
3282
3283 return 0;
3284
3285 err_out_unregister:
3286 pci_disable_msi(pdev);
3287 if (dev1) {
3288 unregister_netdev(dev1);
3289 free_netdev(dev1);
3290 }
3291 unregister_netdev(dev);
3292 err_out_free_netdev:
3293 free_netdev(dev);
3294 err_out_free_pci:
3295 sky2_write8(hw, B0_CTST, CS_RST_SET);
3296 pci_free_consistent(hw->pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3297 err_out_iounmap:
3298 iounmap(hw->regs);
3299 err_out_free_hw:
3300 kfree(hw);
3301 err_out_free_regions:
3302 pci_release_regions(pdev);
3303 pci_disable_device(pdev);
3304 err_out:
3305 return err;
3306 }
3307
3308 static void __devexit sky2_remove(struct pci_dev *pdev)
3309 {
3310 struct sky2_hw *hw = pci_get_drvdata(pdev);
3311 struct net_device *dev0, *dev1;
3312
3313 if (!hw)
3314 return;
3315
3316 dev0 = hw->dev[0];
3317 dev1 = hw->dev[1];
3318 if (dev1)
3319 unregister_netdev(dev1);
3320 unregister_netdev(dev0);
3321
3322 sky2_write32(hw, B0_IMSK, 0);
3323 sky2_set_power_state(hw, PCI_D3hot);
3324 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
3325 sky2_write8(hw, B0_CTST, CS_RST_SET);
3326 sky2_read8(hw, B0_CTST);
3327
3328 free_irq(pdev->irq, hw);
3329 pci_disable_msi(pdev);
3330 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3331 pci_release_regions(pdev);
3332 pci_disable_device(pdev);
3333
3334 if (dev1)
3335 free_netdev(dev1);
3336 free_netdev(dev0);
3337 iounmap(hw->regs);
3338 kfree(hw);
3339
3340 pci_set_drvdata(pdev, NULL);
3341 }
3342
3343 #ifdef CONFIG_PM
3344 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
3345 {
3346 struct sky2_hw *hw = pci_get_drvdata(pdev);
3347 int i;
3348
3349 for (i = 0; i < 2; i++) {
3350 struct net_device *dev = hw->dev[i];
3351
3352 if (dev) {
3353 if (!netif_running(dev))
3354 continue;
3355
3356 sky2_down(dev);
3357 netif_device_detach(dev);
3358 }
3359 }
3360
3361 return sky2_set_power_state(hw, pci_choose_state(pdev, state));
3362 }
3363
3364 static int sky2_resume(struct pci_dev *pdev)
3365 {
3366 struct sky2_hw *hw = pci_get_drvdata(pdev);
3367 int i, err;
3368
3369 pci_restore_state(pdev);
3370 pci_enable_wake(pdev, PCI_D0, 0);
3371 err = sky2_set_power_state(hw, PCI_D0);
3372 if (err)
3373 goto out;
3374
3375 err = sky2_reset(hw);
3376 if (err)
3377 goto out;
3378
3379 for (i = 0; i < 2; i++) {
3380 struct net_device *dev = hw->dev[i];
3381 if (dev && netif_running(dev)) {
3382 netif_device_attach(dev);
3383 err = sky2_up(dev);
3384 if (err) {
3385 printk(KERN_ERR PFX "%s: could not up: %d\n",
3386 dev->name, err);
3387 dev_close(dev);
3388 break;
3389 }
3390 }
3391 }
3392 out:
3393 return err;
3394 }
3395 #endif
3396
3397 static struct pci_driver sky2_driver = {
3398 .name = DRV_NAME,
3399 .id_table = sky2_id_table,
3400 .probe = sky2_probe,
3401 .remove = __devexit_p(sky2_remove),
3402 #ifdef CONFIG_PM
3403 .suspend = sky2_suspend,
3404 .resume = sky2_resume,
3405 #endif
3406 };
3407
3408 static int __init sky2_init_module(void)
3409 {
3410 return pci_register_driver(&sky2_driver);
3411 }
3412
3413 static void __exit sky2_cleanup_module(void)
3414 {
3415 pci_unregister_driver(&sky2_driver);
3416 }
3417
3418 module_init(sky2_init_module);
3419 module_exit(sky2_cleanup_module);
3420
3421 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
3422 MODULE_AUTHOR("Stephen Hemminger <shemminger@osdl.org>");
3423 MODULE_LICENSE("GPL");
3424 MODULE_VERSION(DRV_VERSION);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree