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sky2: prevent dual port receiver problems
[linux-2.6.git] / drivers / net / sky2.c
blob62be6d99d05cd3623e1d0df74cff1495adc9b47c
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 "1.3"
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 #define RING_NEXT(x,s) (((x)+1) & ((s)-1))
83
84 static const u32 default_msg =
85 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
86 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
87 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
88
89 static int debug = -1; /* defaults above */
90 module_param(debug, int, 0);
91 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
92
93 static int copybreak __read_mostly = 256;
94 module_param(copybreak, int, 0);
95 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
96
97 static int disable_msi = 0;
98 module_param(disable_msi, int, 0);
99 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
100
101 static int idle_timeout = 100;
102 module_param(idle_timeout, int, 0);
103 MODULE_PARM_DESC(idle_timeout, "Idle timeout workaround for lost interrupts (ms)");
104
105 static const struct pci_device_id sky2_id_table[] = {
106 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) },
107 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) },
108 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) },
109 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) },
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) },
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) },
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) },
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) },
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) },
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) },
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) },
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) },
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) },
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) },
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) },
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) },
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) },
123 { 0 }
124 };
125
126 MODULE_DEVICE_TABLE(pci, sky2_id_table);
127
128 /* Avoid conditionals by using array */
129 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
130 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
131 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
132
133 /* This driver supports yukon2 chipset only */
134 static const char *yukon2_name[] = {
135 "XL", /* 0xb3 */
136 "EC Ultra", /* 0xb4 */
137 "UNKNOWN", /* 0xb5 */
138 "EC", /* 0xb6 */
139 "FE", /* 0xb7 */
140 };
141
142 /* Access to external PHY */
143 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
144 {
145 int i;
146
147 gma_write16(hw, port, GM_SMI_DATA, val);
148 gma_write16(hw, port, GM_SMI_CTRL,
149 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
150
151 for (i = 0; i < PHY_RETRIES; i++) {
152 if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
153 return 0;
154 udelay(1);
155 }
156
157 printk(KERN_WARNING PFX "%s: phy write timeout\n", hw->dev[port]->name);
158 return -ETIMEDOUT;
159 }
160
161 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
162 {
163 int i;
164
165 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
166 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
167
168 for (i = 0; i < PHY_RETRIES; i++) {
169 if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL) {
170 *val = gma_read16(hw, port, GM_SMI_DATA);
171 return 0;
172 }
173
174 udelay(1);
175 }
176
177 return -ETIMEDOUT;
178 }
179
180 static u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
181 {
182 u16 v;
183
184 if (__gm_phy_read(hw, port, reg, &v) != 0)
185 printk(KERN_WARNING PFX "%s: phy read timeout\n", hw->dev[port]->name);
186 return v;
187 }
188
189 static int sky2_set_power_state(struct sky2_hw *hw, pci_power_t state)
190 {
191 u16 power_control;
192 u32 reg1;
193 int vaux;
194 int ret = 0;
195
196 pr_debug("sky2_set_power_state %d\n", state);
197 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
198
199 power_control = sky2_pci_read16(hw, hw->pm_cap + PCI_PM_PMC);
200 vaux = (sky2_read16(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
201 (power_control & PCI_PM_CAP_PME_D3cold);
202
203 power_control = sky2_pci_read16(hw, hw->pm_cap + PCI_PM_CTRL);
204
205 power_control |= PCI_PM_CTRL_PME_STATUS;
206 power_control &= ~(PCI_PM_CTRL_STATE_MASK);
207
208 switch (state) {
209 case PCI_D0:
210 /* switch power to VCC (WA for VAUX problem) */
211 sky2_write8(hw, B0_POWER_CTRL,
212 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
213
214 /* disable Core Clock Division, */
215 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
216
217 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
218 /* enable bits are inverted */
219 sky2_write8(hw, B2_Y2_CLK_GATE,
220 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
221 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
222 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
223 else
224 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
225
226 /* Turn off phy power saving */
227 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
228 reg1 &= ~(PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
229
230 /* looks like this XL is back asswards .. */
231 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1) {
232 reg1 |= PCI_Y2_PHY1_COMA;
233 if (hw->ports > 1)
234 reg1 |= PCI_Y2_PHY2_COMA;
235 }
236
237 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
238 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
239 reg1 = sky2_pci_read32(hw, PCI_DEV_REG4);
240 reg1 &= P_ASPM_CONTROL_MSK;
241 sky2_pci_write32(hw, PCI_DEV_REG4, reg1);
242 sky2_pci_write32(hw, PCI_DEV_REG5, 0);
243 }
244
245 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
246
247 break;
248
249 case PCI_D3hot:
250 case PCI_D3cold:
251 /* Turn on phy power saving */
252 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
253 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
254 reg1 &= ~(PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
255 else
256 reg1 |= (PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
257 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
258
259 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
260 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
261 else
262 /* enable bits are inverted */
263 sky2_write8(hw, B2_Y2_CLK_GATE,
264 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
265 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
266 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
267
268 /* switch power to VAUX */
269 if (vaux && state != PCI_D3cold)
270 sky2_write8(hw, B0_POWER_CTRL,
271 (PC_VAUX_ENA | PC_VCC_ENA |
272 PC_VAUX_ON | PC_VCC_OFF));
273 break;
274 default:
275 printk(KERN_ERR PFX "Unknown power state %d\n", state);
276 ret = -1;
277 }
278
279 sky2_pci_write16(hw, hw->pm_cap + PCI_PM_CTRL, power_control);
280 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
281 return ret;
282 }
283
284 static void sky2_phy_reset(struct sky2_hw *hw, unsigned port)
285 {
286 u16 reg;
287
288 /* disable all GMAC IRQ's */
289 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
290 /* disable PHY IRQs */
291 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
292
293 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
294 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
295 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
296 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
297
298 reg = gma_read16(hw, port, GM_RX_CTRL);
299 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
300 gma_write16(hw, port, GM_RX_CTRL, reg);
301 }
302
303 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
304 {
305 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
306 u16 ctrl, ct1000, adv, pg, ledctrl, ledover;
307
308 if (sky2->autoneg == AUTONEG_ENABLE &&
309 (hw->chip_id != CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)) {
310 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
311
312 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
313 PHY_M_EC_MAC_S_MSK);
314 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
315
316 if (hw->chip_id == CHIP_ID_YUKON_EC)
317 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
318 else
319 ectrl |= PHY_M_EC_M_DSC(2) | PHY_M_EC_S_DSC(3);
320
321 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
322 }
323
324 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
325 if (hw->copper) {
326 if (hw->chip_id == CHIP_ID_YUKON_FE) {
327 /* enable automatic crossover */
328 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
329 } else {
330 /* disable energy detect */
331 ctrl &= ~PHY_M_PC_EN_DET_MSK;
332
333 /* enable automatic crossover */
334 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
335
336 if (sky2->autoneg == AUTONEG_ENABLE &&
337 (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)) {
338 ctrl &= ~PHY_M_PC_DSC_MSK;
339 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
340 }
341 }
342 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
343 } else {
344 /* workaround for deviation #4.88 (CRC errors) */
345 /* disable Automatic Crossover */
346
347 ctrl &= ~PHY_M_PC_MDIX_MSK;
348 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
349
350 if (hw->chip_id == CHIP_ID_YUKON_XL) {
351 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
352 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
353 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
354 ctrl &= ~PHY_M_MAC_MD_MSK;
355 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
356 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
357
358 /* select page 1 to access Fiber registers */
359 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
360 }
361 }
362
363 ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
364 if (sky2->autoneg == AUTONEG_DISABLE)
365 ctrl &= ~PHY_CT_ANE;
366 else
367 ctrl |= PHY_CT_ANE;
368
369 ctrl |= PHY_CT_RESET;
370 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
371
372 ctrl = 0;
373 ct1000 = 0;
374 adv = PHY_AN_CSMA;
375
376 if (sky2->autoneg == AUTONEG_ENABLE) {
377 if (hw->copper) {
378 if (sky2->advertising & ADVERTISED_1000baseT_Full)
379 ct1000 |= PHY_M_1000C_AFD;
380 if (sky2->advertising & ADVERTISED_1000baseT_Half)
381 ct1000 |= PHY_M_1000C_AHD;
382 if (sky2->advertising & ADVERTISED_100baseT_Full)
383 adv |= PHY_M_AN_100_FD;
384 if (sky2->advertising & ADVERTISED_100baseT_Half)
385 adv |= PHY_M_AN_100_HD;
386 if (sky2->advertising & ADVERTISED_10baseT_Full)
387 adv |= PHY_M_AN_10_FD;
388 if (sky2->advertising & ADVERTISED_10baseT_Half)
389 adv |= PHY_M_AN_10_HD;
390 } else /* special defines for FIBER (88E1011S only) */
391 adv |= PHY_M_AN_1000X_AHD | PHY_M_AN_1000X_AFD;
392
393 /* Set Flow-control capabilities */
394 if (sky2->tx_pause && sky2->rx_pause)
395 adv |= PHY_AN_PAUSE_CAP; /* symmetric */
396 else if (sky2->rx_pause && !sky2->tx_pause)
397 adv |= PHY_AN_PAUSE_ASYM | PHY_AN_PAUSE_CAP;
398 else if (!sky2->rx_pause && sky2->tx_pause)
399 adv |= PHY_AN_PAUSE_ASYM; /* local */
400
401 /* Restart Auto-negotiation */
402 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
403 } else {
404 /* forced speed/duplex settings */
405 ct1000 = PHY_M_1000C_MSE;
406
407 if (sky2->duplex == DUPLEX_FULL)
408 ctrl |= PHY_CT_DUP_MD;
409
410 switch (sky2->speed) {
411 case SPEED_1000:
412 ctrl |= PHY_CT_SP1000;
413 break;
414 case SPEED_100:
415 ctrl |= PHY_CT_SP100;
416 break;
417 }
418
419 ctrl |= PHY_CT_RESET;
420 }
421
422 if (hw->chip_id != CHIP_ID_YUKON_FE)
423 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
424
425 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
426 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
427
428 /* Setup Phy LED's */
429 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
430 ledover = 0;
431
432 switch (hw->chip_id) {
433 case CHIP_ID_YUKON_FE:
434 /* on 88E3082 these bits are at 11..9 (shifted left) */
435 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
436
437 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
438
439 /* delete ACT LED control bits */
440 ctrl &= ~PHY_M_FELP_LED1_MSK;
441 /* change ACT LED control to blink mode */
442 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
443 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
444 break;
445
446 case CHIP_ID_YUKON_XL:
447 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
448
449 /* select page 3 to access LED control register */
450 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
451
452 /* set LED Function Control register */
453 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
454 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
455 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
456 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
457 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
458
459 /* set Polarity Control register */
460 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
461 (PHY_M_POLC_LS1_P_MIX(4) |
462 PHY_M_POLC_IS0_P_MIX(4) |
463 PHY_M_POLC_LOS_CTRL(2) |
464 PHY_M_POLC_INIT_CTRL(2) |
465 PHY_M_POLC_STA1_CTRL(2) |
466 PHY_M_POLC_STA0_CTRL(2)));
467
468 /* restore page register */
469 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
470 break;
471 case CHIP_ID_YUKON_EC_U:
472 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
473
474 /* select page 3 to access LED control register */
475 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
476
477 /* set LED Function Control register */
478 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
479 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
480 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
481 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
482 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
483
484 /* set Blink Rate in LED Timer Control Register */
485 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
486 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
487 /* restore page register */
488 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
489 break;
490
491 default:
492 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
493 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
494 /* turn off the Rx LED (LED_RX) */
495 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
496 }
497
498 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev == CHIP_REV_YU_EC_A1) {
499 /* apply fixes in PHY AFE */
500 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
501 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
502
503 /* increase differential signal amplitude in 10BASE-T */
504 gm_phy_write(hw, port, 0x18, 0xaa99);
505 gm_phy_write(hw, port, 0x17, 0x2011);
506
507 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
508 gm_phy_write(hw, port, 0x18, 0xa204);
509 gm_phy_write(hw, port, 0x17, 0x2002);
510
511 /* set page register to 0 */
512 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
513 } else {
514 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
515
516 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
517 /* turn on 100 Mbps LED (LED_LINK100) */
518 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
519 }
520
521 if (ledover)
522 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
523
524 }
525 /* Enable phy interrupt on auto-negotiation complete (or link up) */
526 if (sky2->autoneg == AUTONEG_ENABLE)
527 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
528 else
529 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
530 }
531
532 /* Force a renegotiation */
533 static void sky2_phy_reinit(struct sky2_port *sky2)
534 {
535 spin_lock_bh(&sky2->phy_lock);
536 sky2_phy_init(sky2->hw, sky2->port);
537 spin_unlock_bh(&sky2->phy_lock);
538 }
539
540 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
541 {
542 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
543 u16 reg;
544 int i;
545 const u8 *addr = hw->dev[port]->dev_addr;
546
547 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
548 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR|GPC_ENA_PAUSE);
549
550 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
551
552 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
553 /* WA DEV_472 -- looks like crossed wires on port 2 */
554 /* clear GMAC 1 Control reset */
555 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
556 do {
557 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
558 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
559 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
560 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
561 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
562 }
563
564 if (sky2->autoneg == AUTONEG_DISABLE) {
565 reg = gma_read16(hw, port, GM_GP_CTRL);
566 reg |= GM_GPCR_AU_ALL_DIS;
567 gma_write16(hw, port, GM_GP_CTRL, reg);
568 gma_read16(hw, port, GM_GP_CTRL);
569
570 switch (sky2->speed) {
571 case SPEED_1000:
572 reg &= ~GM_GPCR_SPEED_100;
573 reg |= GM_GPCR_SPEED_1000;
574 break;
575 case SPEED_100:
576 reg &= ~GM_GPCR_SPEED_1000;
577 reg |= GM_GPCR_SPEED_100;
578 break;
579 case SPEED_10:
580 reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
581 break;
582 }
583
584 if (sky2->duplex == DUPLEX_FULL)
585 reg |= GM_GPCR_DUP_FULL;
586
587 /* turn off pause in 10/100mbps half duplex */
588 else if (sky2->speed != SPEED_1000 &&
589 hw->chip_id != CHIP_ID_YUKON_EC_U)
590 sky2->tx_pause = sky2->rx_pause = 0;
591 } else
592 reg = GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100 | GM_GPCR_DUP_FULL;
593
594 if (!sky2->tx_pause && !sky2->rx_pause) {
595 sky2_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
596 reg |=
597 GM_GPCR_FC_TX_DIS | GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
598 } else if (sky2->tx_pause && !sky2->rx_pause) {
599 /* disable Rx flow-control */
600 reg |= GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
601 }
602
603 gma_write16(hw, port, GM_GP_CTRL, reg);
604
605 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
606
607 spin_lock_bh(&sky2->phy_lock);
608 sky2_phy_init(hw, port);
609 spin_unlock_bh(&sky2->phy_lock);
610
611 /* MIB clear */
612 reg = gma_read16(hw, port, GM_PHY_ADDR);
613 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
614
615 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
616 gma_read16(hw, port, i);
617 gma_write16(hw, port, GM_PHY_ADDR, reg);
618
619 /* transmit control */
620 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
621
622 /* receive control reg: unicast + multicast + no FCS */
623 gma_write16(hw, port, GM_RX_CTRL,
624 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
625
626 /* transmit flow control */
627 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
628
629 /* transmit parameter */
630 gma_write16(hw, port, GM_TX_PARAM,
631 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
632 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
633 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
634 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
635
636 /* serial mode register */
637 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
638 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
639
640 if (hw->dev[port]->mtu > ETH_DATA_LEN)
641 reg |= GM_SMOD_JUMBO_ENA;
642
643 gma_write16(hw, port, GM_SERIAL_MODE, reg);
644
645 /* virtual address for data */
646 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
647
648 /* physical address: used for pause frames */
649 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
650
651 /* ignore counter overflows */
652 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
653 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
654 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
655
656 /* Configure Rx MAC FIFO */
657 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
658 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
659 GMF_OPER_ON | GMF_RX_F_FL_ON);
660
661 /* Flush Rx MAC FIFO on any flow control or error */
662 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
663
664 /* Set threshold to 0xa (64 bytes)
665 * ASF disabled so no need to do WA dev #4.30
666 */
667 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF);
668
669 /* Configure Tx MAC FIFO */
670 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
671 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
672
673 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
674 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
675 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
676 if (hw->dev[port]->mtu > ETH_DATA_LEN) {
677 /* set Tx GMAC FIFO Almost Empty Threshold */
678 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR), 0x180);
679 /* Disable Store & Forward mode for TX */
680 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
681 }
682 }
683
684 }
685
686 /* Assign Ram Buffer allocation.
687 * start and end are in units of 4k bytes
688 * ram registers are in units of 64bit words
689 */
690 static void sky2_ramset(struct sky2_hw *hw, u16 q, u8 startk, u8 endk)
691 {
692 u32 start, end;
693
694 start = startk * 4096/8;
695 end = (endk * 4096/8) - 1;
696
697 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
698 sky2_write32(hw, RB_ADDR(q, RB_START), start);
699 sky2_write32(hw, RB_ADDR(q, RB_END), end);
700 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
701 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
702
703 if (q == Q_R1 || q == Q_R2) {
704 u32 space = (endk - startk) * 4096/8;
705 u32 tp = space - space/4;
706
707 /* On receive queue's set the thresholds
708 * give receiver priority when > 3/4 full
709 * send pause when down to 2K
710 */
711 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
712 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
713
714 tp = space - 2048/8;
715 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
716 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
717 } else {
718 /* Enable store & forward on Tx queue's because
719 * Tx FIFO is only 1K on Yukon
720 */
721 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
722 }
723
724 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
725 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
726 }
727
728 /* Setup Bus Memory Interface */
729 static void sky2_qset(struct sky2_hw *hw, u16 q)
730 {
731 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
732 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
733 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
734 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
735 }
736
737 /* Setup prefetch unit registers. This is the interface between
738 * hardware and driver list elements
739 */
740 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
741 u64 addr, u32 last)
742 {
743 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
744 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
745 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
746 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
747 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
748 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
749
750 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
751 }
752
753 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
754 {
755 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
756
757 sky2->tx_prod = RING_NEXT(sky2->tx_prod, TX_RING_SIZE);
758 return le;
759 }
760
761 /* Update chip's next pointer */
762 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
763 {
764 wmb();
765 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
766 mmiowb();
767 }
768
769
770 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
771 {
772 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
773 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
774 return le;
775 }
776
777 /* Return high part of DMA address (could be 32 or 64 bit) */
778 static inline u32 high32(dma_addr_t a)
779 {
780 return sizeof(a) > sizeof(u32) ? (a >> 16) >> 16 : 0;
781 }
782
783 /* Build description to hardware about buffer */
784 static void sky2_rx_add(struct sky2_port *sky2, dma_addr_t map)
785 {
786 struct sky2_rx_le *le;
787 u32 hi = high32(map);
788 u16 len = sky2->rx_bufsize;
789
790 if (sky2->rx_addr64 != hi) {
791 le = sky2_next_rx(sky2);
792 le->addr = cpu_to_le32(hi);
793 le->ctrl = 0;
794 le->opcode = OP_ADDR64 | HW_OWNER;
795 sky2->rx_addr64 = high32(map + len);
796 }
797
798 le = sky2_next_rx(sky2);
799 le->addr = cpu_to_le32((u32) map);
800 le->length = cpu_to_le16(len);
801 le->ctrl = 0;
802 le->opcode = OP_PACKET | HW_OWNER;
803 }
804
805
806 /* Tell chip where to start receive checksum.
807 * Actually has two checksums, but set both same to avoid possible byte
808 * order problems.
809 */
810 static void rx_set_checksum(struct sky2_port *sky2)
811 {
812 struct sky2_rx_le *le;
813
814 le = sky2_next_rx(sky2);
815 le->addr = (ETH_HLEN << 16) | ETH_HLEN;
816 le->ctrl = 0;
817 le->opcode = OP_TCPSTART | HW_OWNER;
818
819 sky2_write32(sky2->hw,
820 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
821 sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
822
823 }
824
825 /*
826 * The RX Stop command will not work for Yukon-2 if the BMU does not
827 * reach the end of packet and since we can't make sure that we have
828 * incoming data, we must reset the BMU while it is not doing a DMA
829 * transfer. Since it is possible that the RX path is still active,
830 * the RX RAM buffer will be stopped first, so any possible incoming
831 * data will not trigger a DMA. After the RAM buffer is stopped, the
832 * BMU is polled until any DMA in progress is ended and only then it
833 * will be reset.
834 */
835 static void sky2_rx_stop(struct sky2_port *sky2)
836 {
837 struct sky2_hw *hw = sky2->hw;
838 unsigned rxq = rxqaddr[sky2->port];
839 int i;
840
841 /* disable the RAM Buffer receive queue */
842 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
843
844 for (i = 0; i < 0xffff; i++)
845 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
846 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
847 goto stopped;
848
849 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
850 sky2->netdev->name);
851 stopped:
852 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
853
854 /* reset the Rx prefetch unit */
855 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
856 }
857
858 /* Clean out receive buffer area, assumes receiver hardware stopped */
859 static void sky2_rx_clean(struct sky2_port *sky2)
860 {
861 unsigned i;
862
863 memset(sky2->rx_le, 0, RX_LE_BYTES);
864 for (i = 0; i < sky2->rx_pending; i++) {
865 struct ring_info *re = sky2->rx_ring + i;
866
867 if (re->skb) {
868 pci_unmap_single(sky2->hw->pdev,
869 re->mapaddr, sky2->rx_bufsize,
870 PCI_DMA_FROMDEVICE);
871 kfree_skb(re->skb);
872 re->skb = NULL;
873 }
874 }
875 }
876
877 /* Basic MII support */
878 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
879 {
880 struct mii_ioctl_data *data = if_mii(ifr);
881 struct sky2_port *sky2 = netdev_priv(dev);
882 struct sky2_hw *hw = sky2->hw;
883 int err = -EOPNOTSUPP;
884
885 if (!netif_running(dev))
886 return -ENODEV; /* Phy still in reset */
887
888 switch (cmd) {
889 case SIOCGMIIPHY:
890 data->phy_id = PHY_ADDR_MARV;
891
892 /* fallthru */
893 case SIOCGMIIREG: {
894 u16 val = 0;
895
896 spin_lock_bh(&sky2->phy_lock);
897 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
898 spin_unlock_bh(&sky2->phy_lock);
899
900 data->val_out = val;
901 break;
902 }
903
904 case SIOCSMIIREG:
905 if (!capable(CAP_NET_ADMIN))
906 return -EPERM;
907
908 spin_lock_bh(&sky2->phy_lock);
909 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
910 data->val_in);
911 spin_unlock_bh(&sky2->phy_lock);
912 break;
913 }
914 return err;
915 }
916
917 #ifdef SKY2_VLAN_TAG_USED
918 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
919 {
920 struct sky2_port *sky2 = netdev_priv(dev);
921 struct sky2_hw *hw = sky2->hw;
922 u16 port = sky2->port;
923
924 spin_lock_bh(&sky2->tx_lock);
925
926 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_ON);
927 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_ON);
928 sky2->vlgrp = grp;
929
930 spin_unlock_bh(&sky2->tx_lock);
931 }
932
933 static void sky2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
934 {
935 struct sky2_port *sky2 = netdev_priv(dev);
936 struct sky2_hw *hw = sky2->hw;
937 u16 port = sky2->port;
938
939 spin_lock_bh(&sky2->tx_lock);
940
941 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_OFF);
942 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_OFF);
943 if (sky2->vlgrp)
944 sky2->vlgrp->vlan_devices[vid] = NULL;
945
946 spin_unlock_bh(&sky2->tx_lock);
947 }
948 #endif
949
950 /*
951 * It appears the hardware has a bug in the FIFO logic that
952 * cause it to hang if the FIFO gets overrun and the receive buffer
953 * is not aligned. ALso alloc_skb() won't align properly if slab
954 * debugging is enabled.
955 */
956 static inline struct sk_buff *sky2_alloc_skb(unsigned int size, gfp_t gfp_mask)
957 {
958 struct sk_buff *skb;
959
960 skb = alloc_skb(size + RX_SKB_ALIGN, gfp_mask);
961 if (likely(skb)) {
962 unsigned long p = (unsigned long) skb->data;
963 skb_reserve(skb, ALIGN(p, RX_SKB_ALIGN) - p);
964 }
965
966 return skb;
967 }
968
969 /*
970 * Allocate and setup receiver buffer pool.
971 * In case of 64 bit dma, there are 2X as many list elements
972 * available as ring entries
973 * and need to reserve one list element so we don't wrap around.
974 */
975 static int sky2_rx_start(struct sky2_port *sky2)
976 {
977 struct sky2_hw *hw = sky2->hw;
978 unsigned rxq = rxqaddr[sky2->port];
979 int i;
980
981 sky2->rx_put = sky2->rx_next = 0;
982 sky2_qset(hw, rxq);
983
984 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev >= 2) {
985 /* MAC Rx RAM Read is controlled by hardware */
986 sky2_write32(hw, Q_ADDR(rxq, Q_F), F_M_RX_RAM_DIS);
987 }
988
989 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
990
991 rx_set_checksum(sky2);
992 for (i = 0; i < sky2->rx_pending; i++) {
993 struct ring_info *re = sky2->rx_ring + i;
994
995 re->skb = sky2_alloc_skb(sky2->rx_bufsize, GFP_KERNEL);
996 if (!re->skb)
997 goto nomem;
998
999 re->mapaddr = pci_map_single(hw->pdev, re->skb->data,
1000 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
1001 sky2_rx_add(sky2, re->mapaddr);
1002 }
1003
1004 /* Truncate oversize frames */
1005 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), sky2->rx_bufsize - 8);
1006 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1007
1008 /* Tell chip about available buffers */
1009 sky2_write16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX), sky2->rx_put);
1010 return 0;
1011 nomem:
1012 sky2_rx_clean(sky2);
1013 return -ENOMEM;
1014 }
1015
1016 /* Bring up network interface. */
1017 static int sky2_up(struct net_device *dev)
1018 {
1019 struct sky2_port *sky2 = netdev_priv(dev);
1020 struct sky2_hw *hw = sky2->hw;
1021 unsigned port = sky2->port;
1022 u32 ramsize, rxspace, imask;
1023 int err;
1024 struct net_device *otherdev = hw->dev[sky2->port^1];
1025
1026 /* Block bringing up both ports at the same time on a dual port card.
1027 * There is an unfixed bug where receiver gets confused and picks up
1028 * packets out of order. Until this is fixed, prevent data corruption.
1029 */
1030 if (otherdev && netif_running(otherdev)) {
1031 printk(KERN_INFO PFX "dual port support is disabled.\n");
1032 return -EBUSY;
1033 }
1034
1035 err = -ENOMEM;
1036 if (netif_msg_ifup(sky2))
1037 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
1038
1039 /* must be power of 2 */
1040 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1041 TX_RING_SIZE *
1042 sizeof(struct sky2_tx_le),
1043 &sky2->tx_le_map);
1044 if (!sky2->tx_le)
1045 goto err_out;
1046
1047 sky2->tx_ring = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info),
1048 GFP_KERNEL);
1049 if (!sky2->tx_ring)
1050 goto err_out;
1051 sky2->tx_prod = sky2->tx_cons = 0;
1052
1053 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1054 &sky2->rx_le_map);
1055 if (!sky2->rx_le)
1056 goto err_out;
1057 memset(sky2->rx_le, 0, RX_LE_BYTES);
1058
1059 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct ring_info),
1060 GFP_KERNEL);
1061 if (!sky2->rx_ring)
1062 goto err_out;
1063
1064 sky2_mac_init(hw, port);
1065
1066 /* Determine available ram buffer space (in 4K blocks).
1067 * Note: not sure about the FE setting below yet
1068 */
1069 if (hw->chip_id == CHIP_ID_YUKON_FE)
1070 ramsize = 4;
1071 else
1072 ramsize = sky2_read8(hw, B2_E_0);
1073
1074 /* Give transmitter one third (rounded up) */
1075 rxspace = ramsize - (ramsize + 2) / 3;
1076
1077 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1078 sky2_ramset(hw, txqaddr[port], rxspace, ramsize);
1079
1080 /* Make sure SyncQ is disabled */
1081 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1082 RB_RST_SET);
1083
1084 sky2_qset(hw, txqaddr[port]);
1085
1086 /* Set almost empty threshold */
1087 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev == 1)
1088 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), 0x1a0);
1089
1090 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1091 TX_RING_SIZE - 1);
1092
1093 err = sky2_rx_start(sky2);
1094 if (err)
1095 goto err_out;
1096
1097 /* Enable interrupts from phy/mac for port */
1098 imask = sky2_read32(hw, B0_IMSK);
1099 imask |= portirq_msk[port];
1100 sky2_write32(hw, B0_IMSK, imask);
1101
1102 return 0;
1103
1104 err_out:
1105 if (sky2->rx_le) {
1106 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1107 sky2->rx_le, sky2->rx_le_map);
1108 sky2->rx_le = NULL;
1109 }
1110 if (sky2->tx_le) {
1111 pci_free_consistent(hw->pdev,
1112 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1113 sky2->tx_le, sky2->tx_le_map);
1114 sky2->tx_le = NULL;
1115 }
1116 kfree(sky2->tx_ring);
1117 kfree(sky2->rx_ring);
1118
1119 sky2->tx_ring = NULL;
1120 sky2->rx_ring = NULL;
1121 return err;
1122 }
1123
1124 /* Modular subtraction in ring */
1125 static inline int tx_dist(unsigned tail, unsigned head)
1126 {
1127 return (head - tail) & (TX_RING_SIZE - 1);
1128 }
1129
1130 /* Number of list elements available for next tx */
1131 static inline int tx_avail(const struct sky2_port *sky2)
1132 {
1133 return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
1134 }
1135
1136 /* Estimate of number of transmit list elements required */
1137 static unsigned tx_le_req(const struct sk_buff *skb)
1138 {
1139 unsigned count;
1140
1141 count = sizeof(dma_addr_t) / sizeof(u32);
1142 count += skb_shinfo(skb)->nr_frags * count;
1143
1144 if (skb_shinfo(skb)->tso_size)
1145 ++count;
1146
1147 if (skb->ip_summed == CHECKSUM_HW)
1148 ++count;
1149
1150 return count;
1151 }
1152
1153 /*
1154 * Put one packet in ring for transmit.
1155 * A single packet can generate multiple list elements, and
1156 * the number of ring elements will probably be less than the number
1157 * of list elements used.
1158 *
1159 * No BH disabling for tx_lock here (like tg3)
1160 */
1161 static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1162 {
1163 struct sky2_port *sky2 = netdev_priv(dev);
1164 struct sky2_hw *hw = sky2->hw;
1165 struct sky2_tx_le *le = NULL;
1166 struct tx_ring_info *re;
1167 unsigned i, len;
1168 int avail;
1169 dma_addr_t mapping;
1170 u32 addr64;
1171 u16 mss;
1172 u8 ctrl;
1173
1174 /* No BH disabling for tx_lock here. We are running in BH disabled
1175 * context and TX reclaim runs via poll inside of a software
1176 * interrupt, and no related locks in IRQ processing.
1177 */
1178 if (!spin_trylock(&sky2->tx_lock))
1179 return NETDEV_TX_LOCKED;
1180
1181 if (unlikely(tx_avail(sky2) < tx_le_req(skb))) {
1182 /* There is a known but harmless race with lockless tx
1183 * and netif_stop_queue.
1184 */
1185 if (!netif_queue_stopped(dev)) {
1186 netif_stop_queue(dev);
1187 if (net_ratelimit())
1188 printk(KERN_WARNING PFX "%s: ring full when queue awake!\n",
1189 dev->name);
1190 }
1191 spin_unlock(&sky2->tx_lock);
1192
1193 return NETDEV_TX_BUSY;
1194 }
1195
1196 if (unlikely(netif_msg_tx_queued(sky2)))
1197 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1198 dev->name, sky2->tx_prod, skb->len);
1199
1200 len = skb_headlen(skb);
1201 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1202 addr64 = high32(mapping);
1203
1204 re = sky2->tx_ring + sky2->tx_prod;
1205
1206 /* Send high bits if changed or crosses boundary */
1207 if (addr64 != sky2->tx_addr64 || high32(mapping + len) != sky2->tx_addr64) {
1208 le = get_tx_le(sky2);
1209 le->tx.addr = cpu_to_le32(addr64);
1210 le->ctrl = 0;
1211 le->opcode = OP_ADDR64 | HW_OWNER;
1212 sky2->tx_addr64 = high32(mapping + len);
1213 }
1214
1215 /* Check for TCP Segmentation Offload */
1216 mss = skb_shinfo(skb)->tso_size;
1217 if (mss != 0) {
1218 /* just drop the packet if non-linear expansion fails */
1219 if (skb_header_cloned(skb) &&
1220 pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) {
1221 dev_kfree_skb(skb);
1222 goto out_unlock;
1223 }
1224
1225 mss += ((skb->h.th->doff - 5) * 4); /* TCP options */
1226 mss += (skb->nh.iph->ihl * 4) + sizeof(struct tcphdr);
1227 mss += ETH_HLEN;
1228 }
1229
1230 if (mss != sky2->tx_last_mss) {
1231 le = get_tx_le(sky2);
1232 le->tx.tso.size = cpu_to_le16(mss);
1233 le->tx.tso.rsvd = 0;
1234 le->opcode = OP_LRGLEN | HW_OWNER;
1235 le->ctrl = 0;
1236 sky2->tx_last_mss = mss;
1237 }
1238
1239 ctrl = 0;
1240 #ifdef SKY2_VLAN_TAG_USED
1241 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1242 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1243 if (!le) {
1244 le = get_tx_le(sky2);
1245 le->tx.addr = 0;
1246 le->opcode = OP_VLAN|HW_OWNER;
1247 le->ctrl = 0;
1248 } else
1249 le->opcode |= OP_VLAN;
1250 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1251 ctrl |= INS_VLAN;
1252 }
1253 #endif
1254
1255 /* Handle TCP checksum offload */
1256 if (skb->ip_summed == CHECKSUM_HW) {
1257 u16 hdr = skb->h.raw - skb->data;
1258 u16 offset = hdr + skb->csum;
1259
1260 ctrl = CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1261 if (skb->nh.iph->protocol == IPPROTO_UDP)
1262 ctrl |= UDPTCP;
1263
1264 le = get_tx_le(sky2);
1265 le->tx.csum.start = cpu_to_le16(hdr);
1266 le->tx.csum.offset = cpu_to_le16(offset);
1267 le->length = 0; /* initial checksum value */
1268 le->ctrl = 1; /* one packet */
1269 le->opcode = OP_TCPLISW | HW_OWNER;
1270 }
1271
1272 le = get_tx_le(sky2);
1273 le->tx.addr = cpu_to_le32((u32) mapping);
1274 le->length = cpu_to_le16(len);
1275 le->ctrl = ctrl;
1276 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1277
1278 /* Record the transmit mapping info */
1279 re->skb = skb;
1280 pci_unmap_addr_set(re, mapaddr, mapping);
1281
1282 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1283 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1284 struct tx_ring_info *fre;
1285
1286 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1287 frag->size, PCI_DMA_TODEVICE);
1288 addr64 = high32(mapping);
1289 if (addr64 != sky2->tx_addr64) {
1290 le = get_tx_le(sky2);
1291 le->tx.addr = cpu_to_le32(addr64);
1292 le->ctrl = 0;
1293 le->opcode = OP_ADDR64 | HW_OWNER;
1294 sky2->tx_addr64 = addr64;
1295 }
1296
1297 le = get_tx_le(sky2);
1298 le->tx.addr = cpu_to_le32((u32) mapping);
1299 le->length = cpu_to_le16(frag->size);
1300 le->ctrl = ctrl;
1301 le->opcode = OP_BUFFER | HW_OWNER;
1302
1303 fre = sky2->tx_ring
1304 + RING_NEXT((re - sky2->tx_ring) + i, TX_RING_SIZE);
1305 pci_unmap_addr_set(fre, mapaddr, mapping);
1306 }
1307
1308 re->idx = sky2->tx_prod;
1309 le->ctrl |= EOP;
1310
1311 avail = tx_avail(sky2);
1312 if (mss != 0 || avail < TX_MIN_PENDING) {
1313 le->ctrl |= FRC_STAT;
1314 if (avail <= MAX_SKB_TX_LE)
1315 netif_stop_queue(dev);
1316 }
1317
1318 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1319
1320 out_unlock:
1321 spin_unlock(&sky2->tx_lock);
1322
1323 dev->trans_start = jiffies;
1324 return NETDEV_TX_OK;
1325 }
1326
1327 /*
1328 * Free ring elements from starting at tx_cons until "done"
1329 *
1330 * NB: the hardware will tell us about partial completion of multi-part
1331 * buffers; these are deferred until completion.
1332 */
1333 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1334 {
1335 struct net_device *dev = sky2->netdev;
1336 struct pci_dev *pdev = sky2->hw->pdev;
1337 u16 nxt, put;
1338 unsigned i;
1339
1340 BUG_ON(done >= TX_RING_SIZE);
1341
1342 if (unlikely(netif_msg_tx_done(sky2)))
1343 printk(KERN_DEBUG "%s: tx done, up to %u\n",
1344 dev->name, done);
1345
1346 for (put = sky2->tx_cons; put != done; put = nxt) {
1347 struct tx_ring_info *re = sky2->tx_ring + put;
1348 struct sk_buff *skb = re->skb;
1349
1350 nxt = re->idx;
1351 BUG_ON(nxt >= TX_RING_SIZE);
1352 prefetch(sky2->tx_ring + nxt);
1353
1354 /* Check for partial status */
1355 if (tx_dist(put, done) < tx_dist(put, nxt))
1356 break;
1357
1358 skb = re->skb;
1359 pci_unmap_single(pdev, pci_unmap_addr(re, mapaddr),
1360 skb_headlen(skb), PCI_DMA_TODEVICE);
1361
1362 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1363 struct tx_ring_info *fre;
1364 fre = sky2->tx_ring + RING_NEXT(put + i, TX_RING_SIZE);
1365 pci_unmap_page(pdev, pci_unmap_addr(fre, mapaddr),
1366 skb_shinfo(skb)->frags[i].size,
1367 PCI_DMA_TODEVICE);
1368 }
1369
1370 dev_kfree_skb(skb);
1371 }
1372
1373 sky2->tx_cons = put;
1374 if (tx_avail(sky2) > MAX_SKB_TX_LE)
1375 netif_wake_queue(dev);
1376 }
1377
1378 /* Cleanup all untransmitted buffers, assume transmitter not running */
1379 static void sky2_tx_clean(struct sky2_port *sky2)
1380 {
1381 spin_lock_bh(&sky2->tx_lock);
1382 sky2_tx_complete(sky2, sky2->tx_prod);
1383 spin_unlock_bh(&sky2->tx_lock);
1384 }
1385
1386 /* Network shutdown */
1387 static int sky2_down(struct net_device *dev)
1388 {
1389 struct sky2_port *sky2 = netdev_priv(dev);
1390 struct sky2_hw *hw = sky2->hw;
1391 unsigned port = sky2->port;
1392 u16 ctrl;
1393 u32 imask;
1394
1395 /* Never really got started! */
1396 if (!sky2->tx_le)
1397 return 0;
1398
1399 if (netif_msg_ifdown(sky2))
1400 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1401
1402 /* Stop more packets from being queued */
1403 netif_stop_queue(dev);
1404
1405 sky2_phy_reset(hw, port);
1406
1407 /* Stop transmitter */
1408 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1409 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1410
1411 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1412 RB_RST_SET | RB_DIS_OP_MD);
1413
1414 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1415 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1416 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1417
1418 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1419
1420 /* Workaround shared GMAC reset */
1421 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1422 && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1423 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1424
1425 /* Disable Force Sync bit and Enable Alloc bit */
1426 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1427 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1428
1429 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1430 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1431 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1432
1433 /* Reset the PCI FIFO of the async Tx queue */
1434 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1435 BMU_RST_SET | BMU_FIFO_RST);
1436
1437 /* Reset the Tx prefetch units */
1438 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1439 PREF_UNIT_RST_SET);
1440
1441 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1442
1443 sky2_rx_stop(sky2);
1444
1445 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1446 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1447
1448 /* Disable port IRQ */
1449 imask = sky2_read32(hw, B0_IMSK);
1450 imask &= ~portirq_msk[port];
1451 sky2_write32(hw, B0_IMSK, imask);
1452
1453 /* turn off LED's */
1454 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1455
1456 synchronize_irq(hw->pdev->irq);
1457
1458 sky2_tx_clean(sky2);
1459 sky2_rx_clean(sky2);
1460
1461 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1462 sky2->rx_le, sky2->rx_le_map);
1463 kfree(sky2->rx_ring);
1464
1465 pci_free_consistent(hw->pdev,
1466 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1467 sky2->tx_le, sky2->tx_le_map);
1468 kfree(sky2->tx_ring);
1469
1470 sky2->tx_le = NULL;
1471 sky2->rx_le = NULL;
1472
1473 sky2->rx_ring = NULL;
1474 sky2->tx_ring = NULL;
1475
1476 return 0;
1477 }
1478
1479 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1480 {
1481 if (!hw->copper)
1482 return SPEED_1000;
1483
1484 if (hw->chip_id == CHIP_ID_YUKON_FE)
1485 return (aux & PHY_M_PS_SPEED_100) ? SPEED_100 : SPEED_10;
1486
1487 switch (aux & PHY_M_PS_SPEED_MSK) {
1488 case PHY_M_PS_SPEED_1000:
1489 return SPEED_1000;
1490 case PHY_M_PS_SPEED_100:
1491 return SPEED_100;
1492 default:
1493 return SPEED_10;
1494 }
1495 }
1496
1497 static void sky2_link_up(struct sky2_port *sky2)
1498 {
1499 struct sky2_hw *hw = sky2->hw;
1500 unsigned port = sky2->port;
1501 u16 reg;
1502
1503 /* Enable Transmit FIFO Underrun */
1504 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
1505
1506 reg = gma_read16(hw, port, GM_GP_CTRL);
1507 if (sky2->autoneg == AUTONEG_DISABLE) {
1508 reg |= GM_GPCR_AU_ALL_DIS;
1509
1510 /* Is write/read necessary? Copied from sky2_mac_init */
1511 gma_write16(hw, port, GM_GP_CTRL, reg);
1512 gma_read16(hw, port, GM_GP_CTRL);
1513
1514 switch (sky2->speed) {
1515 case SPEED_1000:
1516 reg &= ~GM_GPCR_SPEED_100;
1517 reg |= GM_GPCR_SPEED_1000;
1518 break;
1519 case SPEED_100:
1520 reg &= ~GM_GPCR_SPEED_1000;
1521 reg |= GM_GPCR_SPEED_100;
1522 break;
1523 case SPEED_10:
1524 reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
1525 break;
1526 }
1527 } else
1528 reg &= ~GM_GPCR_AU_ALL_DIS;
1529
1530 if (sky2->duplex == DUPLEX_FULL || sky2->autoneg == AUTONEG_ENABLE)
1531 reg |= GM_GPCR_DUP_FULL;
1532
1533 /* enable Rx/Tx */
1534 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1535 gma_write16(hw, port, GM_GP_CTRL, reg);
1536 gma_read16(hw, port, GM_GP_CTRL);
1537
1538 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1539
1540 netif_carrier_on(sky2->netdev);
1541 netif_wake_queue(sky2->netdev);
1542
1543 /* Turn on link LED */
1544 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1545 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1546
1547 if (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U) {
1548 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
1549 u16 led = PHY_M_LEDC_LOS_CTRL(1); /* link active */
1550
1551 switch(sky2->speed) {
1552 case SPEED_10:
1553 led |= PHY_M_LEDC_INIT_CTRL(7);
1554 break;
1555
1556 case SPEED_100:
1557 led |= PHY_M_LEDC_STA1_CTRL(7);
1558 break;
1559
1560 case SPEED_1000:
1561 led |= PHY_M_LEDC_STA0_CTRL(7);
1562 break;
1563 }
1564
1565 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
1566 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, led);
1567 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
1568 }
1569
1570 if (netif_msg_link(sky2))
1571 printk(KERN_INFO PFX
1572 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1573 sky2->netdev->name, sky2->speed,
1574 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1575 (sky2->tx_pause && sky2->rx_pause) ? "both" :
1576 sky2->tx_pause ? "tx" : sky2->rx_pause ? "rx" : "none");
1577 }
1578
1579 static void sky2_link_down(struct sky2_port *sky2)
1580 {
1581 struct sky2_hw *hw = sky2->hw;
1582 unsigned port = sky2->port;
1583 u16 reg;
1584
1585 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1586
1587 reg = gma_read16(hw, port, GM_GP_CTRL);
1588 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1589 gma_write16(hw, port, GM_GP_CTRL, reg);
1590 gma_read16(hw, port, GM_GP_CTRL); /* PCI post */
1591
1592 if (sky2->rx_pause && !sky2->tx_pause) {
1593 /* restore Asymmetric Pause bit */
1594 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV,
1595 gm_phy_read(hw, port, PHY_MARV_AUNE_ADV)
1596 | PHY_M_AN_ASP);
1597 }
1598
1599 netif_carrier_off(sky2->netdev);
1600 netif_stop_queue(sky2->netdev);
1601
1602 /* Turn on link LED */
1603 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1604
1605 if (netif_msg_link(sky2))
1606 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
1607 sky2_phy_init(hw, port);
1608 }
1609
1610 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
1611 {
1612 struct sky2_hw *hw = sky2->hw;
1613 unsigned port = sky2->port;
1614 u16 lpa;
1615
1616 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
1617
1618 if (lpa & PHY_M_AN_RF) {
1619 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
1620 return -1;
1621 }
1622
1623 if (hw->chip_id != CHIP_ID_YUKON_FE &&
1624 gm_phy_read(hw, port, PHY_MARV_1000T_STAT) & PHY_B_1000S_MSF) {
1625 printk(KERN_ERR PFX "%s: master/slave fault",
1626 sky2->netdev->name);
1627 return -1;
1628 }
1629
1630 if (!(aux & PHY_M_PS_SPDUP_RES)) {
1631 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
1632 sky2->netdev->name);
1633 return -1;
1634 }
1635
1636 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1637
1638 sky2->speed = sky2_phy_speed(hw, aux);
1639
1640 /* Pause bits are offset (9..8) */
1641 if (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)
1642 aux >>= 6;
1643
1644 sky2->rx_pause = (aux & PHY_M_PS_RX_P_EN) != 0;
1645 sky2->tx_pause = (aux & PHY_M_PS_TX_P_EN) != 0;
1646
1647 if ((sky2->tx_pause || sky2->rx_pause)
1648 && !(sky2->speed < SPEED_1000 && sky2->duplex == DUPLEX_HALF))
1649 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
1650 else
1651 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1652
1653 return 0;
1654 }
1655
1656 /* Interrupt from PHY */
1657 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
1658 {
1659 struct net_device *dev = hw->dev[port];
1660 struct sky2_port *sky2 = netdev_priv(dev);
1661 u16 istatus, phystat;
1662
1663 spin_lock(&sky2->phy_lock);
1664 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
1665 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
1666
1667 if (!netif_running(dev))
1668 goto out;
1669
1670 if (netif_msg_intr(sky2))
1671 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
1672 sky2->netdev->name, istatus, phystat);
1673
1674 if (istatus & PHY_M_IS_AN_COMPL) {
1675 if (sky2_autoneg_done(sky2, phystat) == 0)
1676 sky2_link_up(sky2);
1677 goto out;
1678 }
1679
1680 if (istatus & PHY_M_IS_LSP_CHANGE)
1681 sky2->speed = sky2_phy_speed(hw, phystat);
1682
1683 if (istatus & PHY_M_IS_DUP_CHANGE)
1684 sky2->duplex =
1685 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1686
1687 if (istatus & PHY_M_IS_LST_CHANGE) {
1688 if (phystat & PHY_M_PS_LINK_UP)
1689 sky2_link_up(sky2);
1690 else
1691 sky2_link_down(sky2);
1692 }
1693 out:
1694 spin_unlock(&sky2->phy_lock);
1695 }
1696
1697
1698 /* Transmit timeout is only called if we are running, carries is up
1699 * and tx queue is full (stopped).
1700 */
1701 static void sky2_tx_timeout(struct net_device *dev)
1702 {
1703 struct sky2_port *sky2 = netdev_priv(dev);
1704 struct sky2_hw *hw = sky2->hw;
1705 unsigned txq = txqaddr[sky2->port];
1706 u16 report, done;
1707
1708 if (netif_msg_timer(sky2))
1709 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
1710
1711 report = sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX);
1712 done = sky2_read16(hw, Q_ADDR(txq, Q_DONE));
1713
1714 printk(KERN_DEBUG PFX "%s: transmit ring %u .. %u report=%u done=%u\n",
1715 dev->name,
1716 sky2->tx_cons, sky2->tx_prod, report, done);
1717
1718 if (report != done) {
1719 printk(KERN_INFO PFX "status burst pending (irq moderation?)\n");
1720
1721 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
1722 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
1723 } else if (report != sky2->tx_cons) {
1724 printk(KERN_INFO PFX "status report lost?\n");
1725
1726 spin_lock_bh(&sky2->tx_lock);
1727 sky2_tx_complete(sky2, report);
1728 spin_unlock_bh(&sky2->tx_lock);
1729 } else {
1730 printk(KERN_INFO PFX "hardware hung? flushing\n");
1731
1732 sky2_write32(hw, Q_ADDR(txq, Q_CSR), BMU_STOP);
1733 sky2_write32(hw, Y2_QADDR(txq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1734
1735 sky2_tx_clean(sky2);
1736
1737 sky2_qset(hw, txq);
1738 sky2_prefetch_init(hw, txq, sky2->tx_le_map, TX_RING_SIZE - 1);
1739 }
1740 }
1741
1742
1743 /* Want receive buffer size to be multiple of 64 bits
1744 * and incl room for vlan and truncation
1745 */
1746 static inline unsigned sky2_buf_size(int mtu)
1747 {
1748 return ALIGN(mtu + ETH_HLEN + VLAN_HLEN, 8) + 8;
1749 }
1750
1751 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
1752 {
1753 struct sky2_port *sky2 = netdev_priv(dev);
1754 struct sky2_hw *hw = sky2->hw;
1755 int err;
1756 u16 ctl, mode;
1757 u32 imask;
1758
1759 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
1760 return -EINVAL;
1761
1762 if (hw->chip_id == CHIP_ID_YUKON_EC_U && new_mtu > ETH_DATA_LEN)
1763 return -EINVAL;
1764
1765 if (!netif_running(dev)) {
1766 dev->mtu = new_mtu;
1767 return 0;
1768 }
1769
1770 imask = sky2_read32(hw, B0_IMSK);
1771 sky2_write32(hw, B0_IMSK, 0);
1772
1773 dev->trans_start = jiffies; /* prevent tx timeout */
1774 netif_stop_queue(dev);
1775 netif_poll_disable(hw->dev[0]);
1776
1777 synchronize_irq(hw->pdev->irq);
1778
1779 ctl = gma_read16(hw, sky2->port, GM_GP_CTRL);
1780 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
1781 sky2_rx_stop(sky2);
1782 sky2_rx_clean(sky2);
1783
1784 dev->mtu = new_mtu;
1785 sky2->rx_bufsize = sky2_buf_size(new_mtu);
1786 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
1787 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
1788
1789 if (dev->mtu > ETH_DATA_LEN)
1790 mode |= GM_SMOD_JUMBO_ENA;
1791
1792 gma_write16(hw, sky2->port, GM_SERIAL_MODE, mode);
1793
1794 sky2_write8(hw, RB_ADDR(rxqaddr[sky2->port], RB_CTRL), RB_ENA_OP_MD);
1795
1796 err = sky2_rx_start(sky2);
1797 sky2_write32(hw, B0_IMSK, imask);
1798
1799 if (err)
1800 dev_close(dev);
1801 else {
1802 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl);
1803
1804 netif_poll_enable(hw->dev[0]);
1805 netif_wake_queue(dev);
1806 }
1807
1808 return err;
1809 }
1810
1811 /*
1812 * Receive one packet.
1813 * For small packets or errors, just reuse existing skb.
1814 * For larger packets, get new buffer.
1815 */
1816 static struct sk_buff *sky2_receive(struct sky2_port *sky2,
1817 u16 length, u32 status)
1818 {
1819 struct ring_info *re = sky2->rx_ring + sky2->rx_next;
1820 struct sk_buff *skb = NULL;
1821
1822 if (unlikely(netif_msg_rx_status(sky2)))
1823 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
1824 sky2->netdev->name, sky2->rx_next, status, length);
1825
1826 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
1827 prefetch(sky2->rx_ring + sky2->rx_next);
1828
1829 if (status & GMR_FS_ANY_ERR)
1830 goto error;
1831
1832 if (!(status & GMR_FS_RX_OK))
1833 goto resubmit;
1834
1835 if (length > sky2->netdev->mtu + ETH_HLEN)
1836 goto oversize;
1837
1838 if (length < copybreak) {
1839 skb = alloc_skb(length + 2, GFP_ATOMIC);
1840 if (!skb)
1841 goto resubmit;
1842
1843 skb_reserve(skb, 2);
1844 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->mapaddr,
1845 length, PCI_DMA_FROMDEVICE);
1846 memcpy(skb->data, re->skb->data, length);
1847 skb->ip_summed = re->skb->ip_summed;
1848 skb->csum = re->skb->csum;
1849 pci_dma_sync_single_for_device(sky2->hw->pdev, re->mapaddr,
1850 length, PCI_DMA_FROMDEVICE);
1851 } else {
1852 struct sk_buff *nskb;
1853
1854 nskb = sky2_alloc_skb(sky2->rx_bufsize, GFP_ATOMIC);
1855 if (!nskb)
1856 goto resubmit;
1857
1858 skb = re->skb;
1859 re->skb = nskb;
1860 pci_unmap_single(sky2->hw->pdev, re->mapaddr,
1861 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
1862 prefetch(skb->data);
1863
1864 re->mapaddr = pci_map_single(sky2->hw->pdev, nskb->data,
1865 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
1866 }
1867
1868 skb_put(skb, length);
1869 resubmit:
1870 re->skb->ip_summed = CHECKSUM_NONE;
1871 sky2_rx_add(sky2, re->mapaddr);
1872
1873 /* Tell receiver about new buffers. */
1874 sky2_put_idx(sky2->hw, rxqaddr[sky2->port], sky2->rx_put);
1875
1876 return skb;
1877
1878 oversize:
1879 ++sky2->net_stats.rx_over_errors;
1880 goto resubmit;
1881
1882 error:
1883 ++sky2->net_stats.rx_errors;
1884
1885 if (netif_msg_rx_err(sky2) && net_ratelimit())
1886 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
1887 sky2->netdev->name, status, length);
1888
1889 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
1890 sky2->net_stats.rx_length_errors++;
1891 if (status & GMR_FS_FRAGMENT)
1892 sky2->net_stats.rx_frame_errors++;
1893 if (status & GMR_FS_CRC_ERR)
1894 sky2->net_stats.rx_crc_errors++;
1895 if (status & GMR_FS_RX_FF_OV)
1896 sky2->net_stats.rx_fifo_errors++;
1897
1898 goto resubmit;
1899 }
1900
1901 /* Transmit complete */
1902 static inline void sky2_tx_done(struct net_device *dev, u16 last)
1903 {
1904 struct sky2_port *sky2 = netdev_priv(dev);
1905
1906 if (netif_running(dev)) {
1907 spin_lock(&sky2->tx_lock);
1908 sky2_tx_complete(sky2, last);
1909 spin_unlock(&sky2->tx_lock);
1910 }
1911 }
1912
1913 /* Process status response ring */
1914 static int sky2_status_intr(struct sky2_hw *hw, int to_do)
1915 {
1916 int work_done = 0;
1917 u16 hwidx = sky2_read16(hw, STAT_PUT_IDX);
1918
1919 rmb();
1920
1921 while (hw->st_idx != hwidx) {
1922 struct sky2_status_le *le = hw->st_le + hw->st_idx;
1923 struct net_device *dev;
1924 struct sky2_port *sky2;
1925 struct sk_buff *skb;
1926 u32 status;
1927 u16 length;
1928
1929 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
1930
1931 BUG_ON(le->link >= 2);
1932 dev = hw->dev[le->link];
1933
1934 sky2 = netdev_priv(dev);
1935 length = le->length;
1936 status = le->status;
1937
1938 switch (le->opcode & ~HW_OWNER) {
1939 case OP_RXSTAT:
1940 skb = sky2_receive(sky2, length, status);
1941 if (!skb)
1942 break;
1943
1944 skb->dev = dev;
1945 skb->protocol = eth_type_trans(skb, dev);
1946 dev->last_rx = jiffies;
1947
1948 #ifdef SKY2_VLAN_TAG_USED
1949 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
1950 vlan_hwaccel_receive_skb(skb,
1951 sky2->vlgrp,
1952 be16_to_cpu(sky2->rx_tag));
1953 } else
1954 #endif
1955 netif_receive_skb(skb);
1956
1957 if (++work_done >= to_do)
1958 goto exit_loop;
1959 break;
1960
1961 #ifdef SKY2_VLAN_TAG_USED
1962 case OP_RXVLAN:
1963 sky2->rx_tag = length;
1964 break;
1965
1966 case OP_RXCHKSVLAN:
1967 sky2->rx_tag = length;
1968 /* fall through */
1969 #endif
1970 case OP_RXCHKS:
1971 skb = sky2->rx_ring[sky2->rx_next].skb;
1972 skb->ip_summed = CHECKSUM_HW;
1973 skb->csum = le16_to_cpu(status);
1974 break;
1975
1976 case OP_TXINDEXLE:
1977 /* TX index reports status for both ports */
1978 BUILD_BUG_ON(TX_RING_SIZE > 0x1000);
1979 sky2_tx_done(hw->dev[0], status & 0xfff);
1980 if (hw->dev[1])
1981 sky2_tx_done(hw->dev[1],
1982 ((status >> 24) & 0xff)
1983 | (u16)(length & 0xf) << 8);
1984 break;
1985
1986 default:
1987 if (net_ratelimit())
1988 printk(KERN_WARNING PFX
1989 "unknown status opcode 0x%x\n", le->opcode);
1990 goto exit_loop;
1991 }
1992 }
1993
1994 exit_loop:
1995 return work_done;
1996 }
1997
1998 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
1999 {
2000 struct net_device *dev = hw->dev[port];
2001
2002 if (net_ratelimit())
2003 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
2004 dev->name, status);
2005
2006 if (status & Y2_IS_PAR_RD1) {
2007 if (net_ratelimit())
2008 printk(KERN_ERR PFX "%s: ram data read parity error\n",
2009 dev->name);
2010 /* Clear IRQ */
2011 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2012 }
2013
2014 if (status & Y2_IS_PAR_WR1) {
2015 if (net_ratelimit())
2016 printk(KERN_ERR PFX "%s: ram data write parity error\n",
2017 dev->name);
2018
2019 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2020 }
2021
2022 if (status & Y2_IS_PAR_MAC1) {
2023 if (net_ratelimit())
2024 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
2025 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2026 }
2027
2028 if (status & Y2_IS_PAR_RX1) {
2029 if (net_ratelimit())
2030 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
2031 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2032 }
2033
2034 if (status & Y2_IS_TCP_TXA1) {
2035 if (net_ratelimit())
2036 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
2037 dev->name);
2038 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2039 }
2040 }
2041
2042 static void sky2_hw_intr(struct sky2_hw *hw)
2043 {
2044 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2045
2046 if (status & Y2_IS_TIST_OV)
2047 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2048
2049 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2050 u16 pci_err;
2051
2052 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2053 if (net_ratelimit())
2054 printk(KERN_ERR PFX "%s: pci hw error (0x%x)\n",
2055 pci_name(hw->pdev), pci_err);
2056
2057 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2058 sky2_pci_write16(hw, PCI_STATUS,
2059 pci_err | PCI_STATUS_ERROR_BITS);
2060 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2061 }
2062
2063 if (status & Y2_IS_PCI_EXP) {
2064 /* PCI-Express uncorrectable Error occurred */
2065 u32 pex_err;
2066
2067 pex_err = sky2_pci_read32(hw, PEX_UNC_ERR_STAT);
2068
2069 if (net_ratelimit())
2070 printk(KERN_ERR PFX "%s: pci express error (0x%x)\n",
2071 pci_name(hw->pdev), pex_err);
2072
2073 /* clear the interrupt */
2074 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2075 sky2_pci_write32(hw, PEX_UNC_ERR_STAT,
2076 0xffffffffUL);
2077 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2078
2079 if (pex_err & PEX_FATAL_ERRORS) {
2080 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2081 hwmsk &= ~Y2_IS_PCI_EXP;
2082 sky2_write32(hw, B0_HWE_IMSK, hwmsk);
2083 }
2084 }
2085
2086 if (status & Y2_HWE_L1_MASK)
2087 sky2_hw_error(hw, 0, status);
2088 status >>= 8;
2089 if (status & Y2_HWE_L1_MASK)
2090 sky2_hw_error(hw, 1, status);
2091 }
2092
2093 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2094 {
2095 struct net_device *dev = hw->dev[port];
2096 struct sky2_port *sky2 = netdev_priv(dev);
2097 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2098
2099 if (netif_msg_intr(sky2))
2100 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2101 dev->name, status);
2102
2103 if (status & GM_IS_RX_FF_OR) {
2104 ++sky2->net_stats.rx_fifo_errors;
2105 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2106 }
2107
2108 if (status & GM_IS_TX_FF_UR) {
2109 ++sky2->net_stats.tx_fifo_errors;
2110 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2111 }
2112 }
2113
2114 /* This should never happen it is a fatal situation */
2115 static void sky2_descriptor_error(struct sky2_hw *hw, unsigned port,
2116 const char *rxtx, u32 mask)
2117 {
2118 struct net_device *dev = hw->dev[port];
2119 struct sky2_port *sky2 = netdev_priv(dev);
2120 u32 imask;
2121
2122 printk(KERN_ERR PFX "%s: %s descriptor error (hardware problem)\n",
2123 dev ? dev->name : "<not registered>", rxtx);
2124
2125 imask = sky2_read32(hw, B0_IMSK);
2126 imask &= ~mask;
2127 sky2_write32(hw, B0_IMSK, imask);
2128
2129 if (dev) {
2130 spin_lock(&sky2->phy_lock);
2131 sky2_link_down(sky2);
2132 spin_unlock(&sky2->phy_lock);
2133 }
2134 }
2135
2136 /* If idle then force a fake soft NAPI poll once a second
2137 * to work around cases where sharing an edge triggered interrupt.
2138 */
2139 static void sky2_idle(unsigned long arg)
2140 {
2141 struct sky2_hw *hw = (struct sky2_hw *) arg;
2142 struct net_device *dev = hw->dev[0];
2143
2144 if (__netif_rx_schedule_prep(dev))
2145 __netif_rx_schedule(dev);
2146
2147 mod_timer(&hw->idle_timer, jiffies + msecs_to_jiffies(idle_timeout));
2148 }
2149
2150
2151 static int sky2_poll(struct net_device *dev0, int *budget)
2152 {
2153 struct sky2_hw *hw = ((struct sky2_port *) netdev_priv(dev0))->hw;
2154 int work_limit = min(dev0->quota, *budget);
2155 int work_done = 0;
2156 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2157
2158 if (status & Y2_IS_HW_ERR)
2159 sky2_hw_intr(hw);
2160
2161 if (status & Y2_IS_IRQ_PHY1)
2162 sky2_phy_intr(hw, 0);
2163
2164 if (status & Y2_IS_IRQ_PHY2)
2165 sky2_phy_intr(hw, 1);
2166
2167 if (status & Y2_IS_IRQ_MAC1)
2168 sky2_mac_intr(hw, 0);
2169
2170 if (status & Y2_IS_IRQ_MAC2)
2171 sky2_mac_intr(hw, 1);
2172
2173 if (status & Y2_IS_CHK_RX1)
2174 sky2_descriptor_error(hw, 0, "receive", Y2_IS_CHK_RX1);
2175
2176 if (status & Y2_IS_CHK_RX2)
2177 sky2_descriptor_error(hw, 1, "receive", Y2_IS_CHK_RX2);
2178
2179 if (status & Y2_IS_CHK_TXA1)
2180 sky2_descriptor_error(hw, 0, "transmit", Y2_IS_CHK_TXA1);
2181
2182 if (status & Y2_IS_CHK_TXA2)
2183 sky2_descriptor_error(hw, 1, "transmit", Y2_IS_CHK_TXA2);
2184
2185 if (status & Y2_IS_STAT_BMU)
2186 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2187
2188 work_done = sky2_status_intr(hw, work_limit);
2189 *budget -= work_done;
2190 dev0->quota -= work_done;
2191
2192 if (work_done >= work_limit)
2193 return 1;
2194
2195 netif_rx_complete(dev0);
2196
2197 status = sky2_read32(hw, B0_Y2_SP_LISR);
2198 return 0;
2199 }
2200
2201 static irqreturn_t sky2_intr(int irq, void *dev_id, struct pt_regs *regs)
2202 {
2203 struct sky2_hw *hw = dev_id;
2204 struct net_device *dev0 = hw->dev[0];
2205 u32 status;
2206
2207 /* Reading this mask interrupts as side effect */
2208 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2209 if (status == 0 || status == ~0)
2210 return IRQ_NONE;
2211
2212 prefetch(&hw->st_le[hw->st_idx]);
2213 if (likely(__netif_rx_schedule_prep(dev0)))
2214 __netif_rx_schedule(dev0);
2215
2216 return IRQ_HANDLED;
2217 }
2218
2219 #ifdef CONFIG_NET_POLL_CONTROLLER
2220 static void sky2_netpoll(struct net_device *dev)
2221 {
2222 struct sky2_port *sky2 = netdev_priv(dev);
2223
2224 sky2_intr(sky2->hw->pdev->irq, sky2->hw, NULL);
2225 }
2226 #endif
2227
2228 /* Chip internal frequency for clock calculations */
2229 static inline u32 sky2_mhz(const struct sky2_hw *hw)
2230 {
2231 switch (hw->chip_id) {
2232 case CHIP_ID_YUKON_EC:
2233 case CHIP_ID_YUKON_EC_U:
2234 return 125; /* 125 Mhz */
2235 case CHIP_ID_YUKON_FE:
2236 return 100; /* 100 Mhz */
2237 default: /* YUKON_XL */
2238 return 156; /* 156 Mhz */
2239 }
2240 }
2241
2242 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2243 {
2244 return sky2_mhz(hw) * us;
2245 }
2246
2247 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2248 {
2249 return clk / sky2_mhz(hw);
2250 }
2251
2252
2253 static int __devinit sky2_reset(struct sky2_hw *hw)
2254 {
2255 u16 status;
2256 u8 t8, pmd_type;
2257 int i;
2258
2259 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2260
2261 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2262 if (hw->chip_id < CHIP_ID_YUKON_XL || hw->chip_id > CHIP_ID_YUKON_FE) {
2263 printk(KERN_ERR PFX "%s: unsupported chip type 0x%x\n",
2264 pci_name(hw->pdev), hw->chip_id);
2265 return -EOPNOTSUPP;
2266 }
2267
2268 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2269
2270 /* This rev is really old, and requires untested workarounds */
2271 if (hw->chip_id == CHIP_ID_YUKON_EC && hw->chip_rev == CHIP_REV_YU_EC_A1) {
2272 printk(KERN_ERR PFX "%s: unsupported revision Yukon-%s (0x%x) rev %d\n",
2273 pci_name(hw->pdev), yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
2274 hw->chip_id, hw->chip_rev);
2275 return -EOPNOTSUPP;
2276 }
2277
2278 /* disable ASF */
2279 if (hw->chip_id <= CHIP_ID_YUKON_EC) {
2280 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2281 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2282 }
2283
2284 /* do a SW reset */
2285 sky2_write8(hw, B0_CTST, CS_RST_SET);
2286 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2287
2288 /* clear PCI errors, if any */
2289 status = sky2_pci_read16(hw, PCI_STATUS);
2290
2291 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2292 sky2_pci_write16(hw, PCI_STATUS, status | PCI_STATUS_ERROR_BITS);
2293
2294
2295 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2296
2297 /* clear any PEX errors */
2298 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
2299 sky2_pci_write32(hw, PEX_UNC_ERR_STAT, 0xffffffffUL);
2300
2301
2302 pmd_type = sky2_read8(hw, B2_PMD_TYP);
2303 hw->copper = !(pmd_type == 'L' || pmd_type == 'S');
2304
2305 hw->ports = 1;
2306 t8 = sky2_read8(hw, B2_Y2_HW_RES);
2307 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
2308 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2309 ++hw->ports;
2310 }
2311
2312 sky2_set_power_state(hw, PCI_D0);
2313
2314 for (i = 0; i < hw->ports; i++) {
2315 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2316 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2317 }
2318
2319 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2320
2321 /* Clear I2C IRQ noise */
2322 sky2_write32(hw, B2_I2C_IRQ, 1);
2323
2324 /* turn off hardware timer (unused) */
2325 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2326 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
2327
2328 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
2329
2330 /* Turn off descriptor polling */
2331 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
2332
2333 /* Turn off receive timestamp */
2334 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
2335 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2336
2337 /* enable the Tx Arbiters */
2338 for (i = 0; i < hw->ports; i++)
2339 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
2340
2341 /* Initialize ram interface */
2342 for (i = 0; i < hw->ports; i++) {
2343 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
2344
2345 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
2346 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
2347 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
2348 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
2349 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
2350 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
2351 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
2352 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
2353 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
2354 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
2355 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
2356 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
2357 }
2358
2359 sky2_write32(hw, B0_HWE_IMSK, Y2_HWE_ALL_MASK);
2360
2361 for (i = 0; i < hw->ports; i++)
2362 sky2_phy_reset(hw, i);
2363
2364 memset(hw->st_le, 0, STATUS_LE_BYTES);
2365 hw->st_idx = 0;
2366
2367 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
2368 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
2369
2370 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
2371 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
2372
2373 /* Set the list last index */
2374 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
2375
2376 sky2_write16(hw, STAT_TX_IDX_TH, 10);
2377 sky2_write8(hw, STAT_FIFO_WM, 16);
2378
2379 /* set Status-FIFO ISR watermark */
2380 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
2381 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
2382 else
2383 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
2384
2385 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
2386 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
2387 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
2388
2389 /* enable status unit */
2390 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
2391
2392 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2393 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2394 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2395
2396 return 0;
2397 }
2398
2399 static u32 sky2_supported_modes(const struct sky2_hw *hw)
2400 {
2401 u32 modes;
2402 if (hw->copper) {
2403 modes = SUPPORTED_10baseT_Half
2404 | SUPPORTED_10baseT_Full
2405 | SUPPORTED_100baseT_Half
2406 | SUPPORTED_100baseT_Full
2407 | SUPPORTED_Autoneg | SUPPORTED_TP;
2408
2409 if (hw->chip_id != CHIP_ID_YUKON_FE)
2410 modes |= SUPPORTED_1000baseT_Half
2411 | SUPPORTED_1000baseT_Full;
2412 } else
2413 modes = SUPPORTED_1000baseT_Full | SUPPORTED_FIBRE
2414 | SUPPORTED_Autoneg;
2415 return modes;
2416 }
2417
2418 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2419 {
2420 struct sky2_port *sky2 = netdev_priv(dev);
2421 struct sky2_hw *hw = sky2->hw;
2422
2423 ecmd->transceiver = XCVR_INTERNAL;
2424 ecmd->supported = sky2_supported_modes(hw);
2425 ecmd->phy_address = PHY_ADDR_MARV;
2426 if (hw->copper) {
2427 ecmd->supported = SUPPORTED_10baseT_Half
2428 | SUPPORTED_10baseT_Full
2429 | SUPPORTED_100baseT_Half
2430 | SUPPORTED_100baseT_Full
2431 | SUPPORTED_1000baseT_Half
2432 | SUPPORTED_1000baseT_Full
2433 | SUPPORTED_Autoneg | SUPPORTED_TP;
2434 ecmd->port = PORT_TP;
2435 } else
2436 ecmd->port = PORT_FIBRE;
2437
2438 ecmd->advertising = sky2->advertising;
2439 ecmd->autoneg = sky2->autoneg;
2440 ecmd->speed = sky2->speed;
2441 ecmd->duplex = sky2->duplex;
2442 return 0;
2443 }
2444
2445 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2446 {
2447 struct sky2_port *sky2 = netdev_priv(dev);
2448 const struct sky2_hw *hw = sky2->hw;
2449 u32 supported = sky2_supported_modes(hw);
2450
2451 if (ecmd->autoneg == AUTONEG_ENABLE) {
2452 ecmd->advertising = supported;
2453 sky2->duplex = -1;
2454 sky2->speed = -1;
2455 } else {
2456 u32 setting;
2457
2458 switch (ecmd->speed) {
2459 case SPEED_1000:
2460 if (ecmd->duplex == DUPLEX_FULL)
2461 setting = SUPPORTED_1000baseT_Full;
2462 else if (ecmd->duplex == DUPLEX_HALF)
2463 setting = SUPPORTED_1000baseT_Half;
2464 else
2465 return -EINVAL;
2466 break;
2467 case SPEED_100:
2468 if (ecmd->duplex == DUPLEX_FULL)
2469 setting = SUPPORTED_100baseT_Full;
2470 else if (ecmd->duplex == DUPLEX_HALF)
2471 setting = SUPPORTED_100baseT_Half;
2472 else
2473 return -EINVAL;
2474 break;
2475
2476 case SPEED_10:
2477 if (ecmd->duplex == DUPLEX_FULL)
2478 setting = SUPPORTED_10baseT_Full;
2479 else if (ecmd->duplex == DUPLEX_HALF)
2480 setting = SUPPORTED_10baseT_Half;
2481 else
2482 return -EINVAL;
2483 break;
2484 default:
2485 return -EINVAL;
2486 }
2487
2488 if ((setting & supported) == 0)
2489 return -EINVAL;
2490
2491 sky2->speed = ecmd->speed;
2492 sky2->duplex = ecmd->duplex;
2493 }
2494
2495 sky2->autoneg = ecmd->autoneg;
2496 sky2->advertising = ecmd->advertising;
2497
2498 if (netif_running(dev))
2499 sky2_phy_reinit(sky2);
2500
2501 return 0;
2502 }
2503
2504 static void sky2_get_drvinfo(struct net_device *dev,
2505 struct ethtool_drvinfo *info)
2506 {
2507 struct sky2_port *sky2 = netdev_priv(dev);
2508
2509 strcpy(info->driver, DRV_NAME);
2510 strcpy(info->version, DRV_VERSION);
2511 strcpy(info->fw_version, "N/A");
2512 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
2513 }
2514
2515 static const struct sky2_stat {
2516 char name[ETH_GSTRING_LEN];
2517 u16 offset;
2518 } sky2_stats[] = {
2519 { "tx_bytes", GM_TXO_OK_HI },
2520 { "rx_bytes", GM_RXO_OK_HI },
2521 { "tx_broadcast", GM_TXF_BC_OK },
2522 { "rx_broadcast", GM_RXF_BC_OK },
2523 { "tx_multicast", GM_TXF_MC_OK },
2524 { "rx_multicast", GM_RXF_MC_OK },
2525 { "tx_unicast", GM_TXF_UC_OK },
2526 { "rx_unicast", GM_RXF_UC_OK },
2527 { "tx_mac_pause", GM_TXF_MPAUSE },
2528 { "rx_mac_pause", GM_RXF_MPAUSE },
2529 { "collisions", GM_TXF_COL },
2530 { "late_collision",GM_TXF_LAT_COL },
2531 { "aborted", GM_TXF_ABO_COL },
2532 { "single_collisions", GM_TXF_SNG_COL },
2533 { "multi_collisions", GM_TXF_MUL_COL },
2534
2535 { "rx_short", GM_RXF_SHT },
2536 { "rx_runt", GM_RXE_FRAG },
2537 { "rx_64_byte_packets", GM_RXF_64B },
2538 { "rx_65_to_127_byte_packets", GM_RXF_127B },
2539 { "rx_128_to_255_byte_packets", GM_RXF_255B },
2540 { "rx_256_to_511_byte_packets", GM_RXF_511B },
2541 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
2542 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
2543 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
2544 { "rx_too_long", GM_RXF_LNG_ERR },
2545 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
2546 { "rx_jabber", GM_RXF_JAB_PKT },
2547 { "rx_fcs_error", GM_RXF_FCS_ERR },
2548
2549 { "tx_64_byte_packets", GM_TXF_64B },
2550 { "tx_65_to_127_byte_packets", GM_TXF_127B },
2551 { "tx_128_to_255_byte_packets", GM_TXF_255B },
2552 { "tx_256_to_511_byte_packets", GM_TXF_511B },
2553 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
2554 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
2555 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
2556 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
2557 };
2558
2559 static u32 sky2_get_rx_csum(struct net_device *dev)
2560 {
2561 struct sky2_port *sky2 = netdev_priv(dev);
2562
2563 return sky2->rx_csum;
2564 }
2565
2566 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
2567 {
2568 struct sky2_port *sky2 = netdev_priv(dev);
2569
2570 sky2->rx_csum = data;
2571
2572 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2573 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
2574
2575 return 0;
2576 }
2577
2578 static u32 sky2_get_msglevel(struct net_device *netdev)
2579 {
2580 struct sky2_port *sky2 = netdev_priv(netdev);
2581 return sky2->msg_enable;
2582 }
2583
2584 static int sky2_nway_reset(struct net_device *dev)
2585 {
2586 struct sky2_port *sky2 = netdev_priv(dev);
2587
2588 if (sky2->autoneg != AUTONEG_ENABLE)
2589 return -EINVAL;
2590
2591 sky2_phy_reinit(sky2);
2592
2593 return 0;
2594 }
2595
2596 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
2597 {
2598 struct sky2_hw *hw = sky2->hw;
2599 unsigned port = sky2->port;
2600 int i;
2601
2602 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
2603 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
2604 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
2605 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
2606
2607 for (i = 2; i < count; i++)
2608 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
2609 }
2610
2611 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
2612 {
2613 struct sky2_port *sky2 = netdev_priv(netdev);
2614 sky2->msg_enable = value;
2615 }
2616
2617 static int sky2_get_stats_count(struct net_device *dev)
2618 {
2619 return ARRAY_SIZE(sky2_stats);
2620 }
2621
2622 static void sky2_get_ethtool_stats(struct net_device *dev,
2623 struct ethtool_stats *stats, u64 * data)
2624 {
2625 struct sky2_port *sky2 = netdev_priv(dev);
2626
2627 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
2628 }
2629
2630 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
2631 {
2632 int i;
2633
2634 switch (stringset) {
2635 case ETH_SS_STATS:
2636 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
2637 memcpy(data + i * ETH_GSTRING_LEN,
2638 sky2_stats[i].name, ETH_GSTRING_LEN);
2639 break;
2640 }
2641 }
2642
2643 /* Use hardware MIB variables for critical path statistics and
2644 * transmit feedback not reported at interrupt.
2645 * Other errors are accounted for in interrupt handler.
2646 */
2647 static struct net_device_stats *sky2_get_stats(struct net_device *dev)
2648 {
2649 struct sky2_port *sky2 = netdev_priv(dev);
2650 u64 data[13];
2651
2652 sky2_phy_stats(sky2, data, ARRAY_SIZE(data));
2653
2654 sky2->net_stats.tx_bytes = data[0];
2655 sky2->net_stats.rx_bytes = data[1];
2656 sky2->net_stats.tx_packets = data[2] + data[4] + data[6];
2657 sky2->net_stats.rx_packets = data[3] + data[5] + data[7];
2658 sky2->net_stats.multicast = data[3] + data[5];
2659 sky2->net_stats.collisions = data[10];
2660 sky2->net_stats.tx_aborted_errors = data[12];
2661
2662 return &sky2->net_stats;
2663 }
2664
2665 static int sky2_set_mac_address(struct net_device *dev, void *p)
2666 {
2667 struct sky2_port *sky2 = netdev_priv(dev);
2668 struct sky2_hw *hw = sky2->hw;
2669 unsigned port = sky2->port;
2670 const struct sockaddr *addr = p;
2671
2672 if (!is_valid_ether_addr(addr->sa_data))
2673 return -EADDRNOTAVAIL;
2674
2675 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
2676 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
2677 dev->dev_addr, ETH_ALEN);
2678 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
2679 dev->dev_addr, ETH_ALEN);
2680
2681 /* virtual address for data */
2682 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
2683
2684 /* physical address: used for pause frames */
2685 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
2686
2687 return 0;
2688 }
2689
2690 static void sky2_set_multicast(struct net_device *dev)
2691 {
2692 struct sky2_port *sky2 = netdev_priv(dev);
2693 struct sky2_hw *hw = sky2->hw;
2694 unsigned port = sky2->port;
2695 struct dev_mc_list *list = dev->mc_list;
2696 u16 reg;
2697 u8 filter[8];
2698
2699 memset(filter, 0, sizeof(filter));
2700
2701 reg = gma_read16(hw, port, GM_RX_CTRL);
2702 reg |= GM_RXCR_UCF_ENA;
2703
2704 if (dev->flags & IFF_PROMISC) /* promiscuous */
2705 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
2706 else if ((dev->flags & IFF_ALLMULTI) || dev->mc_count > 16) /* all multicast */
2707 memset(filter, 0xff, sizeof(filter));
2708 else if (dev->mc_count == 0) /* no multicast */
2709 reg &= ~GM_RXCR_MCF_ENA;
2710 else {
2711 int i;
2712 reg |= GM_RXCR_MCF_ENA;
2713
2714 for (i = 0; list && i < dev->mc_count; i++, list = list->next) {
2715 u32 bit = ether_crc(ETH_ALEN, list->dmi_addr) & 0x3f;
2716 filter[bit / 8] |= 1 << (bit % 8);
2717 }
2718 }
2719
2720 gma_write16(hw, port, GM_MC_ADDR_H1,
2721 (u16) filter[0] | ((u16) filter[1] << 8));
2722 gma_write16(hw, port, GM_MC_ADDR_H2,
2723 (u16) filter[2] | ((u16) filter[3] << 8));
2724 gma_write16(hw, port, GM_MC_ADDR_H3,
2725 (u16) filter[4] | ((u16) filter[5] << 8));
2726 gma_write16(hw, port, GM_MC_ADDR_H4,
2727 (u16) filter[6] | ((u16) filter[7] << 8));
2728
2729 gma_write16(hw, port, GM_RX_CTRL, reg);
2730 }
2731
2732 /* Can have one global because blinking is controlled by
2733 * ethtool and that is always under RTNL mutex
2734 */
2735 static void sky2_led(struct sky2_hw *hw, unsigned port, int on)
2736 {
2737 u16 pg;
2738
2739 switch (hw->chip_id) {
2740 case CHIP_ID_YUKON_XL:
2741 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2742 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2743 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
2744 on ? (PHY_M_LEDC_LOS_CTRL(1) |
2745 PHY_M_LEDC_INIT_CTRL(7) |
2746 PHY_M_LEDC_STA1_CTRL(7) |
2747 PHY_M_LEDC_STA0_CTRL(7))
2748 : 0);
2749
2750 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2751 break;
2752
2753 default:
2754 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
2755 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
2756 on ? PHY_M_LED_MO_DUP(MO_LED_ON) |
2757 PHY_M_LED_MO_10(MO_LED_ON) |
2758 PHY_M_LED_MO_100(MO_LED_ON) |
2759 PHY_M_LED_MO_1000(MO_LED_ON) |
2760 PHY_M_LED_MO_RX(MO_LED_ON)
2761 : PHY_M_LED_MO_DUP(MO_LED_OFF) |
2762 PHY_M_LED_MO_10(MO_LED_OFF) |
2763 PHY_M_LED_MO_100(MO_LED_OFF) |
2764 PHY_M_LED_MO_1000(MO_LED_OFF) |
2765 PHY_M_LED_MO_RX(MO_LED_OFF));
2766
2767 }
2768 }
2769
2770 /* blink LED's for finding board */
2771 static int sky2_phys_id(struct net_device *dev, u32 data)
2772 {
2773 struct sky2_port *sky2 = netdev_priv(dev);
2774 struct sky2_hw *hw = sky2->hw;
2775 unsigned port = sky2->port;
2776 u16 ledctrl, ledover = 0;
2777 long ms;
2778 int interrupted;
2779 int onoff = 1;
2780
2781 if (!data || data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ))
2782 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT);
2783 else
2784 ms = data * 1000;
2785
2786 /* save initial values */
2787 spin_lock_bh(&sky2->phy_lock);
2788 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2789 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2790 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2791 ledctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
2792 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2793 } else {
2794 ledctrl = gm_phy_read(hw, port, PHY_MARV_LED_CTRL);
2795 ledover = gm_phy_read(hw, port, PHY_MARV_LED_OVER);
2796 }
2797
2798 interrupted = 0;
2799 while (!interrupted && ms > 0) {
2800 sky2_led(hw, port, onoff);
2801 onoff = !onoff;
2802
2803 spin_unlock_bh(&sky2->phy_lock);
2804 interrupted = msleep_interruptible(250);
2805 spin_lock_bh(&sky2->phy_lock);
2806
2807 ms -= 250;
2808 }
2809
2810 /* resume regularly scheduled programming */
2811 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2812 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2813 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2814 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ledctrl);
2815 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2816 } else {
2817 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
2818 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
2819 }
2820 spin_unlock_bh(&sky2->phy_lock);
2821
2822 return 0;
2823 }
2824
2825 static void sky2_get_pauseparam(struct net_device *dev,
2826 struct ethtool_pauseparam *ecmd)
2827 {
2828 struct sky2_port *sky2 = netdev_priv(dev);
2829
2830 ecmd->tx_pause = sky2->tx_pause;
2831 ecmd->rx_pause = sky2->rx_pause;
2832 ecmd->autoneg = sky2->autoneg;
2833 }
2834
2835 static int sky2_set_pauseparam(struct net_device *dev,
2836 struct ethtool_pauseparam *ecmd)
2837 {
2838 struct sky2_port *sky2 = netdev_priv(dev);
2839 int err = 0;
2840
2841 sky2->autoneg = ecmd->autoneg;
2842 sky2->tx_pause = ecmd->tx_pause != 0;
2843 sky2->rx_pause = ecmd->rx_pause != 0;
2844
2845 sky2_phy_reinit(sky2);
2846
2847 return err;
2848 }
2849
2850 static int sky2_get_coalesce(struct net_device *dev,
2851 struct ethtool_coalesce *ecmd)
2852 {
2853 struct sky2_port *sky2 = netdev_priv(dev);
2854 struct sky2_hw *hw = sky2->hw;
2855
2856 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
2857 ecmd->tx_coalesce_usecs = 0;
2858 else {
2859 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
2860 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
2861 }
2862 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
2863
2864 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
2865 ecmd->rx_coalesce_usecs = 0;
2866 else {
2867 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
2868 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
2869 }
2870 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
2871
2872 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
2873 ecmd->rx_coalesce_usecs_irq = 0;
2874 else {
2875 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
2876 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
2877 }
2878
2879 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
2880
2881 return 0;
2882 }
2883
2884 /* Note: this affect both ports */
2885 static int sky2_set_coalesce(struct net_device *dev,
2886 struct ethtool_coalesce *ecmd)
2887 {
2888 struct sky2_port *sky2 = netdev_priv(dev);
2889 struct sky2_hw *hw = sky2->hw;
2890 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
2891
2892 if (ecmd->tx_coalesce_usecs > tmax ||
2893 ecmd->rx_coalesce_usecs > tmax ||
2894 ecmd->rx_coalesce_usecs_irq > tmax)
2895 return -EINVAL;
2896
2897 if (ecmd->tx_max_coalesced_frames >= TX_RING_SIZE-1)
2898 return -EINVAL;
2899 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
2900 return -EINVAL;
2901 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
2902 return -EINVAL;
2903
2904 if (ecmd->tx_coalesce_usecs == 0)
2905 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
2906 else {
2907 sky2_write32(hw, STAT_TX_TIMER_INI,
2908 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
2909 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2910 }
2911 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
2912
2913 if (ecmd->rx_coalesce_usecs == 0)
2914 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
2915 else {
2916 sky2_write32(hw, STAT_LEV_TIMER_INI,
2917 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
2918 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2919 }
2920 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
2921
2922 if (ecmd->rx_coalesce_usecs_irq == 0)
2923 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
2924 else {
2925 sky2_write32(hw, STAT_ISR_TIMER_INI,
2926 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
2927 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2928 }
2929 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
2930 return 0;
2931 }
2932
2933 static void sky2_get_ringparam(struct net_device *dev,
2934 struct ethtool_ringparam *ering)
2935 {
2936 struct sky2_port *sky2 = netdev_priv(dev);
2937
2938 ering->rx_max_pending = RX_MAX_PENDING;
2939 ering->rx_mini_max_pending = 0;
2940 ering->rx_jumbo_max_pending = 0;
2941 ering->tx_max_pending = TX_RING_SIZE - 1;
2942
2943 ering->rx_pending = sky2->rx_pending;
2944 ering->rx_mini_pending = 0;
2945 ering->rx_jumbo_pending = 0;
2946 ering->tx_pending = sky2->tx_pending;
2947 }
2948
2949 static int sky2_set_ringparam(struct net_device *dev,
2950 struct ethtool_ringparam *ering)
2951 {
2952 struct sky2_port *sky2 = netdev_priv(dev);
2953 int err = 0;
2954
2955 if (ering->rx_pending > RX_MAX_PENDING ||
2956 ering->rx_pending < 8 ||
2957 ering->tx_pending < MAX_SKB_TX_LE ||
2958 ering->tx_pending > TX_RING_SIZE - 1)
2959 return -EINVAL;
2960
2961 if (netif_running(dev))
2962 sky2_down(dev);
2963
2964 sky2->rx_pending = ering->rx_pending;
2965 sky2->tx_pending = ering->tx_pending;
2966
2967 if (netif_running(dev)) {
2968 err = sky2_up(dev);
2969 if (err)
2970 dev_close(dev);
2971 else
2972 sky2_set_multicast(dev);
2973 }
2974
2975 return err;
2976 }
2977
2978 static int sky2_get_regs_len(struct net_device *dev)
2979 {
2980 return 0x4000;
2981 }
2982
2983 /*
2984 * Returns copy of control register region
2985 * Note: access to the RAM address register set will cause timeouts.
2986 */
2987 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
2988 void *p)
2989 {
2990 const struct sky2_port *sky2 = netdev_priv(dev);
2991 const void __iomem *io = sky2->hw->regs;
2992
2993 BUG_ON(regs->len < B3_RI_WTO_R1);
2994 regs->version = 1;
2995 memset(p, 0, regs->len);
2996
2997 memcpy_fromio(p, io, B3_RAM_ADDR);
2998
2999 memcpy_fromio(p + B3_RI_WTO_R1,
3000 io + B3_RI_WTO_R1,
3001 regs->len - B3_RI_WTO_R1);
3002 }
3003
3004 static struct ethtool_ops sky2_ethtool_ops = {
3005 .get_settings = sky2_get_settings,
3006 .set_settings = sky2_set_settings,
3007 .get_drvinfo = sky2_get_drvinfo,
3008 .get_msglevel = sky2_get_msglevel,
3009 .set_msglevel = sky2_set_msglevel,
3010 .nway_reset = sky2_nway_reset,
3011 .get_regs_len = sky2_get_regs_len,
3012 .get_regs = sky2_get_regs,
3013 .get_link = ethtool_op_get_link,
3014 .get_sg = ethtool_op_get_sg,
3015 .set_sg = ethtool_op_set_sg,
3016 .get_tx_csum = ethtool_op_get_tx_csum,
3017 .set_tx_csum = ethtool_op_set_tx_csum,
3018 .get_tso = ethtool_op_get_tso,
3019 .set_tso = ethtool_op_set_tso,
3020 .get_rx_csum = sky2_get_rx_csum,
3021 .set_rx_csum = sky2_set_rx_csum,
3022 .get_strings = sky2_get_strings,
3023 .get_coalesce = sky2_get_coalesce,
3024 .set_coalesce = sky2_set_coalesce,
3025 .get_ringparam = sky2_get_ringparam,
3026 .set_ringparam = sky2_set_ringparam,
3027 .get_pauseparam = sky2_get_pauseparam,
3028 .set_pauseparam = sky2_set_pauseparam,
3029 .phys_id = sky2_phys_id,
3030 .get_stats_count = sky2_get_stats_count,
3031 .get_ethtool_stats = sky2_get_ethtool_stats,
3032 .get_perm_addr = ethtool_op_get_perm_addr,
3033 };
3034
3035 /* Initialize network device */
3036 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
3037 unsigned port, int highmem)
3038 {
3039 struct sky2_port *sky2;
3040 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
3041
3042 if (!dev) {
3043 printk(KERN_ERR "sky2 etherdev alloc failed");
3044 return NULL;
3045 }
3046
3047 SET_MODULE_OWNER(dev);
3048 SET_NETDEV_DEV(dev, &hw->pdev->dev);
3049 dev->irq = hw->pdev->irq;
3050 dev->open = sky2_up;
3051 dev->stop = sky2_down;
3052 dev->do_ioctl = sky2_ioctl;
3053 dev->hard_start_xmit = sky2_xmit_frame;
3054 dev->get_stats = sky2_get_stats;
3055 dev->set_multicast_list = sky2_set_multicast;
3056 dev->set_mac_address = sky2_set_mac_address;
3057 dev->change_mtu = sky2_change_mtu;
3058 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
3059 dev->tx_timeout = sky2_tx_timeout;
3060 dev->watchdog_timeo = TX_WATCHDOG;
3061 if (port == 0)
3062 dev->poll = sky2_poll;
3063 dev->weight = NAPI_WEIGHT;
3064 #ifdef CONFIG_NET_POLL_CONTROLLER
3065 dev->poll_controller = sky2_netpoll;
3066 #endif
3067
3068 sky2 = netdev_priv(dev);
3069 sky2->netdev = dev;
3070 sky2->hw = hw;
3071 sky2->msg_enable = netif_msg_init(debug, default_msg);
3072
3073 spin_lock_init(&sky2->tx_lock);
3074 /* Auto speed and flow control */
3075 sky2->autoneg = AUTONEG_ENABLE;
3076 sky2->tx_pause = 1;
3077 sky2->rx_pause = 1;
3078 sky2->duplex = -1;
3079 sky2->speed = -1;
3080 sky2->advertising = sky2_supported_modes(hw);
3081
3082 /* Receive checksum disabled for Yukon XL
3083 * because of observed problems with incorrect
3084 * values when multiple packets are received in one interrupt
3085 */
3086 sky2->rx_csum = (hw->chip_id != CHIP_ID_YUKON_XL);
3087
3088 spin_lock_init(&sky2->phy_lock);
3089 sky2->tx_pending = TX_DEF_PENDING;
3090 sky2->rx_pending = RX_DEF_PENDING;
3091 sky2->rx_bufsize = sky2_buf_size(ETH_DATA_LEN);
3092
3093 hw->dev[port] = dev;
3094
3095 sky2->port = port;
3096
3097 dev->features |= NETIF_F_LLTX;
3098 if (hw->chip_id != CHIP_ID_YUKON_EC_U)
3099 dev->features |= NETIF_F_TSO;
3100 if (highmem)
3101 dev->features |= NETIF_F_HIGHDMA;
3102 dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
3103
3104 #ifdef SKY2_VLAN_TAG_USED
3105 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
3106 dev->vlan_rx_register = sky2_vlan_rx_register;
3107 dev->vlan_rx_kill_vid = sky2_vlan_rx_kill_vid;
3108 #endif
3109
3110 /* read the mac address */
3111 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
3112 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
3113
3114 /* device is off until link detection */
3115 netif_carrier_off(dev);
3116 netif_stop_queue(dev);
3117
3118 return dev;
3119 }
3120
3121 static void __devinit sky2_show_addr(struct net_device *dev)
3122 {
3123 const struct sky2_port *sky2 = netdev_priv(dev);
3124
3125 if (netif_msg_probe(sky2))
3126 printk(KERN_INFO PFX "%s: addr %02x:%02x:%02x:%02x:%02x:%02x\n",
3127 dev->name,
3128 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
3129 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
3130 }
3131
3132 /* Handle software interrupt used during MSI test */
3133 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id,
3134 struct pt_regs *regs)
3135 {
3136 struct sky2_hw *hw = dev_id;
3137 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
3138
3139 if (status == 0)
3140 return IRQ_NONE;
3141
3142 if (status & Y2_IS_IRQ_SW) {
3143 hw->msi_detected = 1;
3144 wake_up(&hw->msi_wait);
3145 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3146 }
3147 sky2_write32(hw, B0_Y2_SP_ICR, 2);
3148
3149 return IRQ_HANDLED;
3150 }
3151
3152 /* Test interrupt path by forcing a a software IRQ */
3153 static int __devinit sky2_test_msi(struct sky2_hw *hw)
3154 {
3155 struct pci_dev *pdev = hw->pdev;
3156 int err;
3157
3158 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
3159
3160 err = request_irq(pdev->irq, sky2_test_intr, SA_SHIRQ, DRV_NAME, hw);
3161 if (err) {
3162 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3163 pci_name(pdev), pdev->irq);
3164 return err;
3165 }
3166
3167 init_waitqueue_head (&hw->msi_wait);
3168
3169 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
3170 wmb();
3171
3172 wait_event_timeout(hw->msi_wait, hw->msi_detected, HZ/10);
3173
3174 if (!hw->msi_detected) {
3175 /* MSI test failed, go back to INTx mode */
3176 printk(KERN_WARNING PFX "%s: No interrupt was generated using MSI, "
3177 "switching to INTx mode. Please report this failure to "
3178 "the PCI maintainer and include system chipset information.\n",
3179 pci_name(pdev));
3180
3181 err = -EOPNOTSUPP;
3182 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3183 }
3184
3185 sky2_write32(hw, B0_IMSK, 0);
3186
3187 free_irq(pdev->irq, hw);
3188
3189 return err;
3190 }
3191
3192 static int __devinit sky2_probe(struct pci_dev *pdev,
3193 const struct pci_device_id *ent)
3194 {
3195 struct net_device *dev, *dev1 = NULL;
3196 struct sky2_hw *hw;
3197 int err, pm_cap, using_dac = 0;
3198
3199 err = pci_enable_device(pdev);
3200 if (err) {
3201 printk(KERN_ERR PFX "%s cannot enable PCI device\n",
3202 pci_name(pdev));
3203 goto err_out;
3204 }
3205
3206 err = pci_request_regions(pdev, DRV_NAME);
3207 if (err) {
3208 printk(KERN_ERR PFX "%s cannot obtain PCI resources\n",
3209 pci_name(pdev));
3210 goto err_out;
3211 }
3212
3213 pci_set_master(pdev);
3214
3215 /* Find power-management capability. */
3216 pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
3217 if (pm_cap == 0) {
3218 printk(KERN_ERR PFX "Cannot find PowerManagement capability, "
3219 "aborting.\n");
3220 err = -EIO;
3221 goto err_out_free_regions;
3222 }
3223
3224 if (sizeof(dma_addr_t) > sizeof(u32) &&
3225 !(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
3226 using_dac = 1;
3227 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3228 if (err < 0) {
3229 printk(KERN_ERR PFX "%s unable to obtain 64 bit DMA "
3230 "for consistent allocations\n", pci_name(pdev));
3231 goto err_out_free_regions;
3232 }
3233
3234 } else {
3235 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
3236 if (err) {
3237 printk(KERN_ERR PFX "%s no usable DMA configuration\n",
3238 pci_name(pdev));
3239 goto err_out_free_regions;
3240 }
3241 }
3242
3243 err = -ENOMEM;
3244 hw = kzalloc(sizeof(*hw), GFP_KERNEL);
3245 if (!hw) {
3246 printk(KERN_ERR PFX "%s: cannot allocate hardware struct\n",
3247 pci_name(pdev));
3248 goto err_out_free_regions;
3249 }
3250
3251 hw->pdev = pdev;
3252
3253 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
3254 if (!hw->regs) {
3255 printk(KERN_ERR PFX "%s: cannot map device registers\n",
3256 pci_name(pdev));
3257 goto err_out_free_hw;
3258 }
3259 hw->pm_cap = pm_cap;
3260
3261 #ifdef __BIG_ENDIAN
3262 /* byte swap descriptors in hardware */
3263 {
3264 u32 reg;
3265
3266 reg = sky2_pci_read32(hw, PCI_DEV_REG2);
3267 reg |= PCI_REV_DESC;
3268 sky2_pci_write32(hw, PCI_DEV_REG2, reg);
3269 }
3270 #endif
3271
3272 /* ring for status responses */
3273 hw->st_le = pci_alloc_consistent(hw->pdev, STATUS_LE_BYTES,
3274 &hw->st_dma);
3275 if (!hw->st_le)
3276 goto err_out_iounmap;
3277
3278 err = sky2_reset(hw);
3279 if (err)
3280 goto err_out_iounmap;
3281
3282 printk(KERN_INFO PFX "v%s addr 0x%lx irq %d Yukon-%s (0x%x) rev %d\n",
3283 DRV_VERSION, pci_resource_start(pdev, 0), pdev->irq,
3284 yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
3285 hw->chip_id, hw->chip_rev);
3286
3287 dev = sky2_init_netdev(hw, 0, using_dac);
3288 if (!dev)
3289 goto err_out_free_pci;
3290
3291 err = register_netdev(dev);
3292 if (err) {
3293 printk(KERN_ERR PFX "%s: cannot register net device\n",
3294 pci_name(pdev));
3295 goto err_out_free_netdev;
3296 }
3297
3298 sky2_show_addr(dev);
3299
3300 if (hw->ports > 1 && (dev1 = sky2_init_netdev(hw, 1, using_dac))) {
3301 if (register_netdev(dev1) == 0)
3302 sky2_show_addr(dev1);
3303 else {
3304 /* Failure to register second port need not be fatal */
3305 printk(KERN_WARNING PFX
3306 "register of second port failed\n");
3307 hw->dev[1] = NULL;
3308 free_netdev(dev1);
3309 }
3310 }
3311
3312 if (!disable_msi && pci_enable_msi(pdev) == 0) {
3313 err = sky2_test_msi(hw);
3314 if (err == -EOPNOTSUPP)
3315 pci_disable_msi(pdev);
3316 else if (err)
3317 goto err_out_unregister;
3318 }
3319
3320 err = request_irq(pdev->irq, sky2_intr, SA_SHIRQ, DRV_NAME, hw);
3321 if (err) {
3322 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3323 pci_name(pdev), pdev->irq);
3324 goto err_out_unregister;
3325 }
3326
3327 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3328
3329 setup_timer(&hw->idle_timer, sky2_idle, (unsigned long) hw);
3330 if (idle_timeout > 0)
3331 mod_timer(&hw->idle_timer,
3332 jiffies + msecs_to_jiffies(idle_timeout));
3333
3334 pci_set_drvdata(pdev, hw);
3335
3336 return 0;
3337
3338 err_out_unregister:
3339 pci_disable_msi(pdev);
3340 if (dev1) {
3341 unregister_netdev(dev1);
3342 free_netdev(dev1);
3343 }
3344 unregister_netdev(dev);
3345 err_out_free_netdev:
3346 free_netdev(dev);
3347 err_out_free_pci:
3348 sky2_write8(hw, B0_CTST, CS_RST_SET);
3349 pci_free_consistent(hw->pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3350 err_out_iounmap:
3351 iounmap(hw->regs);
3352 err_out_free_hw:
3353 kfree(hw);
3354 err_out_free_regions:
3355 pci_release_regions(pdev);
3356 pci_disable_device(pdev);
3357 err_out:
3358 return err;
3359 }
3360
3361 static void __devexit sky2_remove(struct pci_dev *pdev)
3362 {
3363 struct sky2_hw *hw = pci_get_drvdata(pdev);
3364 struct net_device *dev0, *dev1;
3365
3366 if (!hw)
3367 return;
3368
3369 del_timer_sync(&hw->idle_timer);
3370
3371 sky2_write32(hw, B0_IMSK, 0);
3372 synchronize_irq(hw->pdev->irq);
3373
3374 dev0 = hw->dev[0];
3375 dev1 = hw->dev[1];
3376 if (dev1)
3377 unregister_netdev(dev1);
3378 unregister_netdev(dev0);
3379
3380 sky2_set_power_state(hw, PCI_D3hot);
3381 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
3382 sky2_write8(hw, B0_CTST, CS_RST_SET);
3383 sky2_read8(hw, B0_CTST);
3384
3385 free_irq(pdev->irq, hw);
3386 pci_disable_msi(pdev);
3387 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3388 pci_release_regions(pdev);
3389 pci_disable_device(pdev);
3390
3391 if (dev1)
3392 free_netdev(dev1);
3393 free_netdev(dev0);
3394 iounmap(hw->regs);
3395 kfree(hw);
3396
3397 pci_set_drvdata(pdev, NULL);
3398 }
3399
3400 #ifdef CONFIG_PM
3401 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
3402 {
3403 struct sky2_hw *hw = pci_get_drvdata(pdev);
3404 int i;
3405
3406 for (i = 0; i < 2; i++) {
3407 struct net_device *dev = hw->dev[i];
3408
3409 if (dev) {
3410 if (!netif_running(dev))
3411 continue;
3412
3413 sky2_down(dev);
3414 netif_device_detach(dev);
3415 }
3416 }
3417
3418 return sky2_set_power_state(hw, pci_choose_state(pdev, state));
3419 }
3420
3421 static int sky2_resume(struct pci_dev *pdev)
3422 {
3423 struct sky2_hw *hw = pci_get_drvdata(pdev);
3424 int i, err;
3425
3426 pci_restore_state(pdev);
3427 pci_enable_wake(pdev, PCI_D0, 0);
3428 err = sky2_set_power_state(hw, PCI_D0);
3429 if (err)
3430 goto out;
3431
3432 err = sky2_reset(hw);
3433 if (err)
3434 goto out;
3435
3436 for (i = 0; i < 2; i++) {
3437 struct net_device *dev = hw->dev[i];
3438 if (dev && netif_running(dev)) {
3439 netif_device_attach(dev);
3440 err = sky2_up(dev);
3441 if (err) {
3442 printk(KERN_ERR PFX "%s: could not up: %d\n",
3443 dev->name, err);
3444 dev_close(dev);
3445 break;
3446 }
3447 }
3448 }
3449 out:
3450 return err;
3451 }
3452 #endif
3453
3454 static struct pci_driver sky2_driver = {
3455 .name = DRV_NAME,
3456 .id_table = sky2_id_table,
3457 .probe = sky2_probe,
3458 .remove = __devexit_p(sky2_remove),
3459 #ifdef CONFIG_PM
3460 .suspend = sky2_suspend,
3461 .resume = sky2_resume,
3462 #endif
3463 };
3464
3465 static int __init sky2_init_module(void)
3466 {
3467 return pci_register_driver(&sky2_driver);
3468 }
3469
3470 static void __exit sky2_cleanup_module(void)
3471 {
3472 pci_unregister_driver(&sky2_driver);
3473 }
3474
3475 module_init(sky2_init_module);
3476 module_exit(sky2_cleanup_module);
3477
3478 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
3479 MODULE_AUTHOR("Stephen Hemminger <shemminger@osdl.org>");
3480 MODULE_LICENSE("GPL");
3481 MODULE_VERSION(DRV_VERSION);
Linus' kernel tree