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[PATCH] USB: new devices for the Option driver
[usb.git] / drivers / net / sky2.c
blobfba1e4d4d83d053becf3da50e48577f7740f0c79
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 "1.4"
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_DLINK, 0x4b00) }, /* DGE-560T */
109 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) },
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) },
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) },
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) },
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) },
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) },
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) },
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) },
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) },
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) },
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) },
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) },
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) },
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) },
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) },
124 { 0 }
125 };
126
127 MODULE_DEVICE_TABLE(pci, sky2_id_table);
128
129 /* Avoid conditionals by using array */
130 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
131 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
132 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
133
134 /* This driver supports yukon2 chipset only */
135 static const char *yukon2_name[] = {
136 "XL", /* 0xb3 */
137 "EC Ultra", /* 0xb4 */
138 "UNKNOWN", /* 0xb5 */
139 "EC", /* 0xb6 */
140 "FE", /* 0xb7 */
141 };
142
143 /* Access to external PHY */
144 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
145 {
146 int i;
147
148 gma_write16(hw, port, GM_SMI_DATA, val);
149 gma_write16(hw, port, GM_SMI_CTRL,
150 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
151
152 for (i = 0; i < PHY_RETRIES; i++) {
153 if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
154 return 0;
155 udelay(1);
156 }
157
158 printk(KERN_WARNING PFX "%s: phy write timeout\n", hw->dev[port]->name);
159 return -ETIMEDOUT;
160 }
161
162 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
163 {
164 int i;
165
166 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
167 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
168
169 for (i = 0; i < PHY_RETRIES; i++) {
170 if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL) {
171 *val = gma_read16(hw, port, GM_SMI_DATA);
172 return 0;
173 }
174
175 udelay(1);
176 }
177
178 return -ETIMEDOUT;
179 }
180
181 static u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
182 {
183 u16 v;
184
185 if (__gm_phy_read(hw, port, reg, &v) != 0)
186 printk(KERN_WARNING PFX "%s: phy read timeout\n", hw->dev[port]->name);
187 return v;
188 }
189
190 static void sky2_set_power_state(struct sky2_hw *hw, pci_power_t state)
191 {
192 u16 power_control;
193 u32 reg1;
194 int vaux;
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_write16(hw, B0_CTST, Y2_HW_WOL_ON);
239 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
240 reg1 = sky2_pci_read32(hw, PCI_DEV_REG4);
241 reg1 &= P_ASPM_CONTROL_MSK;
242 sky2_pci_write32(hw, PCI_DEV_REG4, reg1);
243 sky2_pci_write32(hw, PCI_DEV_REG5, 0);
244 }
245
246 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
247
248 break;
249
250 case PCI_D3hot:
251 case PCI_D3cold:
252 /* Turn on phy power saving */
253 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
254 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
255 reg1 &= ~(PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
256 else
257 reg1 |= (PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
258 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
259
260 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
261 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
262 else
263 /* enable bits are inverted */
264 sky2_write8(hw, B2_Y2_CLK_GATE,
265 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
266 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
267 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
268
269 /* switch power to VAUX */
270 if (vaux && state != PCI_D3cold)
271 sky2_write8(hw, B0_POWER_CTRL,
272 (PC_VAUX_ENA | PC_VCC_ENA |
273 PC_VAUX_ON | PC_VCC_OFF));
274 break;
275 default:
276 printk(KERN_ERR PFX "Unknown power state %d\n", state);
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 }
282
283 static void sky2_phy_reset(struct sky2_hw *hw, unsigned port)
284 {
285 u16 reg;
286
287 /* disable all GMAC IRQ's */
288 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
289 /* disable PHY IRQs */
290 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
291
292 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
293 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
294 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
295 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
296
297 reg = gma_read16(hw, port, GM_RX_CTRL);
298 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
299 gma_write16(hw, port, GM_RX_CTRL, reg);
300 }
301
302 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
303 {
304 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
305 u16 ctrl, ct1000, adv, pg, ledctrl, ledover;
306
307 if (sky2->autoneg == AUTONEG_ENABLE &&
308 !(hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)) {
309 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
310
311 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
312 PHY_M_EC_MAC_S_MSK);
313 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
314
315 if (hw->chip_id == CHIP_ID_YUKON_EC)
316 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
317 else
318 ectrl |= PHY_M_EC_M_DSC(2) | PHY_M_EC_S_DSC(3);
319
320 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
321 }
322
323 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
324 if (hw->copper) {
325 if (hw->chip_id == CHIP_ID_YUKON_FE) {
326 /* enable automatic crossover */
327 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
328 } else {
329 /* disable energy detect */
330 ctrl &= ~PHY_M_PC_EN_DET_MSK;
331
332 /* enable automatic crossover */
333 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
334
335 if (sky2->autoneg == AUTONEG_ENABLE &&
336 (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)) {
337 ctrl &= ~PHY_M_PC_DSC_MSK;
338 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
339 }
340 }
341 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
342 } else {
343 /* workaround for deviation #4.88 (CRC errors) */
344 /* disable Automatic Crossover */
345
346 ctrl &= ~PHY_M_PC_MDIX_MSK;
347 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
348
349 if (hw->chip_id == CHIP_ID_YUKON_XL) {
350 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
351 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
352 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
353 ctrl &= ~PHY_M_MAC_MD_MSK;
354 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
355 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
356
357 /* select page 1 to access Fiber registers */
358 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
359 }
360 }
361
362 ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
363 if (sky2->autoneg == AUTONEG_DISABLE)
364 ctrl &= ~PHY_CT_ANE;
365 else
366 ctrl |= PHY_CT_ANE;
367
368 ctrl |= PHY_CT_RESET;
369 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
370
371 ctrl = 0;
372 ct1000 = 0;
373 adv = PHY_AN_CSMA;
374
375 if (sky2->autoneg == AUTONEG_ENABLE) {
376 if (hw->copper) {
377 if (sky2->advertising & ADVERTISED_1000baseT_Full)
378 ct1000 |= PHY_M_1000C_AFD;
379 if (sky2->advertising & ADVERTISED_1000baseT_Half)
380 ct1000 |= PHY_M_1000C_AHD;
381 if (sky2->advertising & ADVERTISED_100baseT_Full)
382 adv |= PHY_M_AN_100_FD;
383 if (sky2->advertising & ADVERTISED_100baseT_Half)
384 adv |= PHY_M_AN_100_HD;
385 if (sky2->advertising & ADVERTISED_10baseT_Full)
386 adv |= PHY_M_AN_10_FD;
387 if (sky2->advertising & ADVERTISED_10baseT_Half)
388 adv |= PHY_M_AN_10_HD;
389 } else /* special defines for FIBER (88E1011S only) */
390 adv |= PHY_M_AN_1000X_AHD | PHY_M_AN_1000X_AFD;
391
392 /* Set Flow-control capabilities */
393 if (sky2->tx_pause && sky2->rx_pause)
394 adv |= PHY_AN_PAUSE_CAP; /* symmetric */
395 else if (sky2->rx_pause && !sky2->tx_pause)
396 adv |= PHY_AN_PAUSE_ASYM | PHY_AN_PAUSE_CAP;
397 else if (!sky2->rx_pause && sky2->tx_pause)
398 adv |= PHY_AN_PAUSE_ASYM; /* local */
399
400 /* Restart Auto-negotiation */
401 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
402 } else {
403 /* forced speed/duplex settings */
404 ct1000 = PHY_M_1000C_MSE;
405
406 if (sky2->duplex == DUPLEX_FULL)
407 ctrl |= PHY_CT_DUP_MD;
408
409 switch (sky2->speed) {
410 case SPEED_1000:
411 ctrl |= PHY_CT_SP1000;
412 break;
413 case SPEED_100:
414 ctrl |= PHY_CT_SP100;
415 break;
416 }
417
418 ctrl |= PHY_CT_RESET;
419 }
420
421 if (hw->chip_id != CHIP_ID_YUKON_FE)
422 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
423
424 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
425 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
426
427 /* Setup Phy LED's */
428 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
429 ledover = 0;
430
431 switch (hw->chip_id) {
432 case CHIP_ID_YUKON_FE:
433 /* on 88E3082 these bits are at 11..9 (shifted left) */
434 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
435
436 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
437
438 /* delete ACT LED control bits */
439 ctrl &= ~PHY_M_FELP_LED1_MSK;
440 /* change ACT LED control to blink mode */
441 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
442 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
443 break;
444
445 case CHIP_ID_YUKON_XL:
446 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
447
448 /* select page 3 to access LED control register */
449 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
450
451 /* set LED Function Control register */
452 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
453 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
454 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
455 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
456 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
457
458 /* set Polarity Control register */
459 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
460 (PHY_M_POLC_LS1_P_MIX(4) |
461 PHY_M_POLC_IS0_P_MIX(4) |
462 PHY_M_POLC_LOS_CTRL(2) |
463 PHY_M_POLC_INIT_CTRL(2) |
464 PHY_M_POLC_STA1_CTRL(2) |
465 PHY_M_POLC_STA0_CTRL(2)));
466
467 /* restore page register */
468 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
469 break;
470 case CHIP_ID_YUKON_EC_U:
471 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
472
473 /* select page 3 to access LED control register */
474 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
475
476 /* set LED Function Control register */
477 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
478 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
479 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
480 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
481 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
482
483 /* set Blink Rate in LED Timer Control Register */
484 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
485 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
486 /* restore page register */
487 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
488 break;
489
490 default:
491 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
492 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
493 /* turn off the Rx LED (LED_RX) */
494 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
495 }
496
497 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev == CHIP_REV_YU_EC_A1) {
498 /* apply fixes in PHY AFE */
499 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
500 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
501
502 /* increase differential signal amplitude in 10BASE-T */
503 gm_phy_write(hw, port, 0x18, 0xaa99);
504 gm_phy_write(hw, port, 0x17, 0x2011);
505
506 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
507 gm_phy_write(hw, port, 0x18, 0xa204);
508 gm_phy_write(hw, port, 0x17, 0x2002);
509
510 /* set page register to 0 */
511 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
512 } else {
513 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
514
515 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
516 /* turn on 100 Mbps LED (LED_LINK100) */
517 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
518 }
519
520 if (ledover)
521 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
522
523 }
524 /* Enable phy interrupt on auto-negotiation complete (or link up) */
525 if (sky2->autoneg == AUTONEG_ENABLE)
526 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
527 else
528 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
529 }
530
531 /* Force a renegotiation */
532 static void sky2_phy_reinit(struct sky2_port *sky2)
533 {
534 spin_lock_bh(&sky2->phy_lock);
535 sky2_phy_init(sky2->hw, sky2->port);
536 spin_unlock_bh(&sky2->phy_lock);
537 }
538
539 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
540 {
541 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
542 u16 reg;
543 int i;
544 const u8 *addr = hw->dev[port]->dev_addr;
545
546 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
547 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR|GPC_ENA_PAUSE);
548
549 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
550
551 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
552 /* WA DEV_472 -- looks like crossed wires on port 2 */
553 /* clear GMAC 1 Control reset */
554 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
555 do {
556 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
557 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
558 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
559 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
560 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
561 }
562
563 if (sky2->autoneg == AUTONEG_DISABLE) {
564 reg = gma_read16(hw, port, GM_GP_CTRL);
565 reg |= GM_GPCR_AU_ALL_DIS;
566 gma_write16(hw, port, GM_GP_CTRL, reg);
567 gma_read16(hw, port, GM_GP_CTRL);
568
569 switch (sky2->speed) {
570 case SPEED_1000:
571 reg &= ~GM_GPCR_SPEED_100;
572 reg |= GM_GPCR_SPEED_1000;
573 break;
574 case SPEED_100:
575 reg &= ~GM_GPCR_SPEED_1000;
576 reg |= GM_GPCR_SPEED_100;
577 break;
578 case SPEED_10:
579 reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
580 break;
581 }
582
583 if (sky2->duplex == DUPLEX_FULL)
584 reg |= GM_GPCR_DUP_FULL;
585
586 /* turn off pause in 10/100mbps half duplex */
587 else if (sky2->speed != SPEED_1000 &&
588 hw->chip_id != CHIP_ID_YUKON_EC_U)
589 sky2->tx_pause = sky2->rx_pause = 0;
590 } else
591 reg = GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100 | GM_GPCR_DUP_FULL;
592
593 if (!sky2->tx_pause && !sky2->rx_pause) {
594 sky2_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
595 reg |=
596 GM_GPCR_FC_TX_DIS | GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
597 } else if (sky2->tx_pause && !sky2->rx_pause) {
598 /* disable Rx flow-control */
599 reg |= GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
600 }
601
602 gma_write16(hw, port, GM_GP_CTRL, reg);
603
604 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
605
606 spin_lock_bh(&sky2->phy_lock);
607 sky2_phy_init(hw, port);
608 spin_unlock_bh(&sky2->phy_lock);
609
610 /* MIB clear */
611 reg = gma_read16(hw, port, GM_PHY_ADDR);
612 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
613
614 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
615 gma_read16(hw, port, i);
616 gma_write16(hw, port, GM_PHY_ADDR, reg);
617
618 /* transmit control */
619 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
620
621 /* receive control reg: unicast + multicast + no FCS */
622 gma_write16(hw, port, GM_RX_CTRL,
623 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
624
625 /* transmit flow control */
626 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
627
628 /* transmit parameter */
629 gma_write16(hw, port, GM_TX_PARAM,
630 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
631 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
632 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
633 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
634
635 /* serial mode register */
636 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
637 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
638
639 if (hw->dev[port]->mtu > ETH_DATA_LEN)
640 reg |= GM_SMOD_JUMBO_ENA;
641
642 gma_write16(hw, port, GM_SERIAL_MODE, reg);
643
644 /* virtual address for data */
645 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
646
647 /* physical address: used for pause frames */
648 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
649
650 /* ignore counter overflows */
651 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
652 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
653 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
654
655 /* Configure Rx MAC FIFO */
656 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
657 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
658 GMF_OPER_ON | GMF_RX_F_FL_ON);
659
660 /* Flush Rx MAC FIFO on any flow control or error */
661 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
662
663 /* Set threshold to 0xa (64 bytes)
664 * ASF disabled so no need to do WA dev #4.30
665 */
666 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF);
667
668 /* Configure Tx MAC FIFO */
669 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
670 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
671
672 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
673 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
674 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
675 if (hw->dev[port]->mtu > ETH_DATA_LEN) {
676 /* set Tx GMAC FIFO Almost Empty Threshold */
677 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR), 0x180);
678 /* Disable Store & Forward mode for TX */
679 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
680 }
681 }
682
683 }
684
685 /* Assign Ram Buffer allocation.
686 * start and end are in units of 4k bytes
687 * ram registers are in units of 64bit words
688 */
689 static void sky2_ramset(struct sky2_hw *hw, u16 q, u8 startk, u8 endk)
690 {
691 u32 start, end;
692
693 start = startk * 4096/8;
694 end = (endk * 4096/8) - 1;
695
696 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
697 sky2_write32(hw, RB_ADDR(q, RB_START), start);
698 sky2_write32(hw, RB_ADDR(q, RB_END), end);
699 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
700 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
701
702 if (q == Q_R1 || q == Q_R2) {
703 u32 space = (endk - startk) * 4096/8;
704 u32 tp = space - space/4;
705
706 /* On receive queue's set the thresholds
707 * give receiver priority when > 3/4 full
708 * send pause when down to 2K
709 */
710 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
711 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
712
713 tp = space - 2048/8;
714 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
715 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
716 } else {
717 /* Enable store & forward on Tx queue's because
718 * Tx FIFO is only 1K on Yukon
719 */
720 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
721 }
722
723 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
724 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
725 }
726
727 /* Setup Bus Memory Interface */
728 static void sky2_qset(struct sky2_hw *hw, u16 q)
729 {
730 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
731 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
732 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
733 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
734 }
735
736 /* Setup prefetch unit registers. This is the interface between
737 * hardware and driver list elements
738 */
739 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
740 u64 addr, u32 last)
741 {
742 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
743 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
744 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
745 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
746 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
747 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
748
749 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
750 }
751
752 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
753 {
754 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
755
756 sky2->tx_prod = RING_NEXT(sky2->tx_prod, TX_RING_SIZE);
757 return le;
758 }
759
760 /* Update chip's next pointer */
761 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
762 {
763 wmb();
764 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
765 mmiowb();
766 }
767
768
769 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
770 {
771 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
772 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
773 return le;
774 }
775
776 /* Return high part of DMA address (could be 32 or 64 bit) */
777 static inline u32 high32(dma_addr_t a)
778 {
779 return sizeof(a) > sizeof(u32) ? (a >> 16) >> 16 : 0;
780 }
781
782 /* Build description to hardware about buffer */
783 static void sky2_rx_add(struct sky2_port *sky2, dma_addr_t map)
784 {
785 struct sky2_rx_le *le;
786 u32 hi = high32(map);
787 u16 len = sky2->rx_bufsize;
788
789 if (sky2->rx_addr64 != hi) {
790 le = sky2_next_rx(sky2);
791 le->addr = cpu_to_le32(hi);
792 le->ctrl = 0;
793 le->opcode = OP_ADDR64 | HW_OWNER;
794 sky2->rx_addr64 = high32(map + len);
795 }
796
797 le = sky2_next_rx(sky2);
798 le->addr = cpu_to_le32((u32) map);
799 le->length = cpu_to_le16(len);
800 le->ctrl = 0;
801 le->opcode = OP_PACKET | HW_OWNER;
802 }
803
804
805 /* Tell chip where to start receive checksum.
806 * Actually has two checksums, but set both same to avoid possible byte
807 * order problems.
808 */
809 static void rx_set_checksum(struct sky2_port *sky2)
810 {
811 struct sky2_rx_le *le;
812
813 le = sky2_next_rx(sky2);
814 le->addr = (ETH_HLEN << 16) | ETH_HLEN;
815 le->ctrl = 0;
816 le->opcode = OP_TCPSTART | HW_OWNER;
817
818 sky2_write32(sky2->hw,
819 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
820 sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
821
822 }
823
824 /*
825 * The RX Stop command will not work for Yukon-2 if the BMU does not
826 * reach the end of packet and since we can't make sure that we have
827 * incoming data, we must reset the BMU while it is not doing a DMA
828 * transfer. Since it is possible that the RX path is still active,
829 * the RX RAM buffer will be stopped first, so any possible incoming
830 * data will not trigger a DMA. After the RAM buffer is stopped, the
831 * BMU is polled until any DMA in progress is ended and only then it
832 * will be reset.
833 */
834 static void sky2_rx_stop(struct sky2_port *sky2)
835 {
836 struct sky2_hw *hw = sky2->hw;
837 unsigned rxq = rxqaddr[sky2->port];
838 int i;
839
840 /* disable the RAM Buffer receive queue */
841 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
842
843 for (i = 0; i < 0xffff; i++)
844 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
845 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
846 goto stopped;
847
848 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
849 sky2->netdev->name);
850 stopped:
851 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
852
853 /* reset the Rx prefetch unit */
854 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
855 }
856
857 /* Clean out receive buffer area, assumes receiver hardware stopped */
858 static void sky2_rx_clean(struct sky2_port *sky2)
859 {
860 unsigned i;
861
862 memset(sky2->rx_le, 0, RX_LE_BYTES);
863 for (i = 0; i < sky2->rx_pending; i++) {
864 struct ring_info *re = sky2->rx_ring + i;
865
866 if (re->skb) {
867 pci_unmap_single(sky2->hw->pdev,
868 re->mapaddr, sky2->rx_bufsize,
869 PCI_DMA_FROMDEVICE);
870 kfree_skb(re->skb);
871 re->skb = NULL;
872 }
873 }
874 }
875
876 /* Basic MII support */
877 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
878 {
879 struct mii_ioctl_data *data = if_mii(ifr);
880 struct sky2_port *sky2 = netdev_priv(dev);
881 struct sky2_hw *hw = sky2->hw;
882 int err = -EOPNOTSUPP;
883
884 if (!netif_running(dev))
885 return -ENODEV; /* Phy still in reset */
886
887 switch (cmd) {
888 case SIOCGMIIPHY:
889 data->phy_id = PHY_ADDR_MARV;
890
891 /* fallthru */
892 case SIOCGMIIREG: {
893 u16 val = 0;
894
895 spin_lock_bh(&sky2->phy_lock);
896 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
897 spin_unlock_bh(&sky2->phy_lock);
898
899 data->val_out = val;
900 break;
901 }
902
903 case SIOCSMIIREG:
904 if (!capable(CAP_NET_ADMIN))
905 return -EPERM;
906
907 spin_lock_bh(&sky2->phy_lock);
908 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
909 data->val_in);
910 spin_unlock_bh(&sky2->phy_lock);
911 break;
912 }
913 return err;
914 }
915
916 #ifdef SKY2_VLAN_TAG_USED
917 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
918 {
919 struct sky2_port *sky2 = netdev_priv(dev);
920 struct sky2_hw *hw = sky2->hw;
921 u16 port = sky2->port;
922
923 spin_lock_bh(&sky2->tx_lock);
924
925 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_ON);
926 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_ON);
927 sky2->vlgrp = grp;
928
929 spin_unlock_bh(&sky2->tx_lock);
930 }
931
932 static void sky2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
933 {
934 struct sky2_port *sky2 = netdev_priv(dev);
935 struct sky2_hw *hw = sky2->hw;
936 u16 port = sky2->port;
937
938 spin_lock_bh(&sky2->tx_lock);
939
940 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_OFF);
941 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_OFF);
942 if (sky2->vlgrp)
943 sky2->vlgrp->vlan_devices[vid] = NULL;
944
945 spin_unlock_bh(&sky2->tx_lock);
946 }
947 #endif
948
949 /*
950 * It appears the hardware has a bug in the FIFO logic that
951 * cause it to hang if the FIFO gets overrun and the receive buffer
952 * is not aligned. ALso alloc_skb() won't align properly if slab
953 * debugging is enabled.
954 */
955 static inline struct sk_buff *sky2_alloc_skb(unsigned int size, gfp_t gfp_mask)
956 {
957 struct sk_buff *skb;
958
959 skb = alloc_skb(size + RX_SKB_ALIGN, gfp_mask);
960 if (likely(skb)) {
961 unsigned long p = (unsigned long) skb->data;
962 skb_reserve(skb, ALIGN(p, RX_SKB_ALIGN) - p);
963 }
964
965 return skb;
966 }
967
968 /*
969 * Allocate and setup receiver buffer pool.
970 * In case of 64 bit dma, there are 2X as many list elements
971 * available as ring entries
972 * and need to reserve one list element so we don't wrap around.
973 */
974 static int sky2_rx_start(struct sky2_port *sky2)
975 {
976 struct sky2_hw *hw = sky2->hw;
977 unsigned rxq = rxqaddr[sky2->port];
978 int i;
979 unsigned thresh;
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
1005 /*
1006 * The receiver hangs if it receives frames larger than the
1007 * packet buffer. As a workaround, truncate oversize frames, but
1008 * the register is limited to 9 bits, so if you do frames > 2052
1009 * you better get the MTU right!
1010 */
1011 thresh = (sky2->rx_bufsize - 8) / sizeof(u32);
1012 if (thresh > 0x1ff)
1013 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1014 else {
1015 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1016 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1017 }
1018
1019
1020 /* Tell chip about available buffers */
1021 sky2_write16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX), sky2->rx_put);
1022 return 0;
1023 nomem:
1024 sky2_rx_clean(sky2);
1025 return -ENOMEM;
1026 }
1027
1028 /* Bring up network interface. */
1029 static int sky2_up(struct net_device *dev)
1030 {
1031 struct sky2_port *sky2 = netdev_priv(dev);
1032 struct sky2_hw *hw = sky2->hw;
1033 unsigned port = sky2->port;
1034 u32 ramsize, rxspace, imask;
1035 int cap, err = -ENOMEM;
1036 struct net_device *otherdev = hw->dev[sky2->port^1];
1037
1038 /*
1039 * On dual port PCI-X card, there is an problem where status
1040 * can be received out of order due to split transactions
1041 */
1042 if (otherdev && netif_running(otherdev) &&
1043 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1044 struct sky2_port *osky2 = netdev_priv(otherdev);
1045 u16 cmd;
1046
1047 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1048 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1049 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1050
1051 sky2->rx_csum = 0;
1052 osky2->rx_csum = 0;
1053 }
1054
1055 if (netif_msg_ifup(sky2))
1056 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
1057
1058 /* must be power of 2 */
1059 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1060 TX_RING_SIZE *
1061 sizeof(struct sky2_tx_le),
1062 &sky2->tx_le_map);
1063 if (!sky2->tx_le)
1064 goto err_out;
1065
1066 sky2->tx_ring = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info),
1067 GFP_KERNEL);
1068 if (!sky2->tx_ring)
1069 goto err_out;
1070 sky2->tx_prod = sky2->tx_cons = 0;
1071
1072 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1073 &sky2->rx_le_map);
1074 if (!sky2->rx_le)
1075 goto err_out;
1076 memset(sky2->rx_le, 0, RX_LE_BYTES);
1077
1078 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct ring_info),
1079 GFP_KERNEL);
1080 if (!sky2->rx_ring)
1081 goto err_out;
1082
1083 sky2_mac_init(hw, port);
1084
1085 /* Determine available ram buffer space (in 4K blocks).
1086 * Note: not sure about the FE setting below yet
1087 */
1088 if (hw->chip_id == CHIP_ID_YUKON_FE)
1089 ramsize = 4;
1090 else
1091 ramsize = sky2_read8(hw, B2_E_0);
1092
1093 /* Give transmitter one third (rounded up) */
1094 rxspace = ramsize - (ramsize + 2) / 3;
1095
1096 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1097 sky2_ramset(hw, txqaddr[port], rxspace, ramsize);
1098
1099 /* Make sure SyncQ is disabled */
1100 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1101 RB_RST_SET);
1102
1103 sky2_qset(hw, txqaddr[port]);
1104
1105 /* Set almost empty threshold */
1106 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev == 1)
1107 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), 0x1a0);
1108
1109 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1110 TX_RING_SIZE - 1);
1111
1112 err = sky2_rx_start(sky2);
1113 if (err)
1114 goto err_out;
1115
1116 /* Enable interrupts from phy/mac for port */
1117 imask = sky2_read32(hw, B0_IMSK);
1118 imask |= portirq_msk[port];
1119 sky2_write32(hw, B0_IMSK, imask);
1120
1121 return 0;
1122
1123 err_out:
1124 if (sky2->rx_le) {
1125 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1126 sky2->rx_le, sky2->rx_le_map);
1127 sky2->rx_le = NULL;
1128 }
1129 if (sky2->tx_le) {
1130 pci_free_consistent(hw->pdev,
1131 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1132 sky2->tx_le, sky2->tx_le_map);
1133 sky2->tx_le = NULL;
1134 }
1135 kfree(sky2->tx_ring);
1136 kfree(sky2->rx_ring);
1137
1138 sky2->tx_ring = NULL;
1139 sky2->rx_ring = NULL;
1140 return err;
1141 }
1142
1143 /* Modular subtraction in ring */
1144 static inline int tx_dist(unsigned tail, unsigned head)
1145 {
1146 return (head - tail) & (TX_RING_SIZE - 1);
1147 }
1148
1149 /* Number of list elements available for next tx */
1150 static inline int tx_avail(const struct sky2_port *sky2)
1151 {
1152 return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
1153 }
1154
1155 /* Estimate of number of transmit list elements required */
1156 static unsigned tx_le_req(const struct sk_buff *skb)
1157 {
1158 unsigned count;
1159
1160 count = sizeof(dma_addr_t) / sizeof(u32);
1161 count += skb_shinfo(skb)->nr_frags * count;
1162
1163 if (skb_shinfo(skb)->tso_size)
1164 ++count;
1165
1166 if (skb->ip_summed == CHECKSUM_HW)
1167 ++count;
1168
1169 return count;
1170 }
1171
1172 /*
1173 * Put one packet in ring for transmit.
1174 * A single packet can generate multiple list elements, and
1175 * the number of ring elements will probably be less than the number
1176 * of list elements used.
1177 *
1178 * No BH disabling for tx_lock here (like tg3)
1179 */
1180 static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1181 {
1182 struct sky2_port *sky2 = netdev_priv(dev);
1183 struct sky2_hw *hw = sky2->hw;
1184 struct sky2_tx_le *le = NULL;
1185 struct tx_ring_info *re;
1186 unsigned i, len;
1187 int avail;
1188 dma_addr_t mapping;
1189 u32 addr64;
1190 u16 mss;
1191 u8 ctrl;
1192
1193 /* No BH disabling for tx_lock here. We are running in BH disabled
1194 * context and TX reclaim runs via poll inside of a software
1195 * interrupt, and no related locks in IRQ processing.
1196 */
1197 if (!spin_trylock(&sky2->tx_lock))
1198 return NETDEV_TX_LOCKED;
1199
1200 if (unlikely(tx_avail(sky2) < tx_le_req(skb))) {
1201 /* There is a known but harmless race with lockless tx
1202 * and netif_stop_queue.
1203 */
1204 if (!netif_queue_stopped(dev)) {
1205 netif_stop_queue(dev);
1206 if (net_ratelimit())
1207 printk(KERN_WARNING PFX "%s: ring full when queue awake!\n",
1208 dev->name);
1209 }
1210 spin_unlock(&sky2->tx_lock);
1211
1212 return NETDEV_TX_BUSY;
1213 }
1214
1215 if (unlikely(netif_msg_tx_queued(sky2)))
1216 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1217 dev->name, sky2->tx_prod, skb->len);
1218
1219 len = skb_headlen(skb);
1220 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1221 addr64 = high32(mapping);
1222
1223 re = sky2->tx_ring + sky2->tx_prod;
1224
1225 /* Send high bits if changed or crosses boundary */
1226 if (addr64 != sky2->tx_addr64 || high32(mapping + len) != sky2->tx_addr64) {
1227 le = get_tx_le(sky2);
1228 le->tx.addr = cpu_to_le32(addr64);
1229 le->ctrl = 0;
1230 le->opcode = OP_ADDR64 | HW_OWNER;
1231 sky2->tx_addr64 = high32(mapping + len);
1232 }
1233
1234 /* Check for TCP Segmentation Offload */
1235 mss = skb_shinfo(skb)->tso_size;
1236 if (mss != 0) {
1237 /* just drop the packet if non-linear expansion fails */
1238 if (skb_header_cloned(skb) &&
1239 pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) {
1240 dev_kfree_skb(skb);
1241 goto out_unlock;
1242 }
1243
1244 mss += ((skb->h.th->doff - 5) * 4); /* TCP options */
1245 mss += (skb->nh.iph->ihl * 4) + sizeof(struct tcphdr);
1246 mss += ETH_HLEN;
1247 }
1248
1249 if (mss != sky2->tx_last_mss) {
1250 le = get_tx_le(sky2);
1251 le->tx.tso.size = cpu_to_le16(mss);
1252 le->tx.tso.rsvd = 0;
1253 le->opcode = OP_LRGLEN | HW_OWNER;
1254 le->ctrl = 0;
1255 sky2->tx_last_mss = mss;
1256 }
1257
1258 ctrl = 0;
1259 #ifdef SKY2_VLAN_TAG_USED
1260 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1261 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1262 if (!le) {
1263 le = get_tx_le(sky2);
1264 le->tx.addr = 0;
1265 le->opcode = OP_VLAN|HW_OWNER;
1266 le->ctrl = 0;
1267 } else
1268 le->opcode |= OP_VLAN;
1269 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1270 ctrl |= INS_VLAN;
1271 }
1272 #endif
1273
1274 /* Handle TCP checksum offload */
1275 if (skb->ip_summed == CHECKSUM_HW) {
1276 u16 hdr = skb->h.raw - skb->data;
1277 u16 offset = hdr + skb->csum;
1278
1279 ctrl = CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1280 if (skb->nh.iph->protocol == IPPROTO_UDP)
1281 ctrl |= UDPTCP;
1282
1283 le = get_tx_le(sky2);
1284 le->tx.csum.start = cpu_to_le16(hdr);
1285 le->tx.csum.offset = cpu_to_le16(offset);
1286 le->length = 0; /* initial checksum value */
1287 le->ctrl = 1; /* one packet */
1288 le->opcode = OP_TCPLISW | HW_OWNER;
1289 }
1290
1291 le = get_tx_le(sky2);
1292 le->tx.addr = cpu_to_le32((u32) mapping);
1293 le->length = cpu_to_le16(len);
1294 le->ctrl = ctrl;
1295 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1296
1297 /* Record the transmit mapping info */
1298 re->skb = skb;
1299 pci_unmap_addr_set(re, mapaddr, mapping);
1300
1301 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1302 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1303 struct tx_ring_info *fre;
1304
1305 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1306 frag->size, PCI_DMA_TODEVICE);
1307 addr64 = high32(mapping);
1308 if (addr64 != sky2->tx_addr64) {
1309 le = get_tx_le(sky2);
1310 le->tx.addr = cpu_to_le32(addr64);
1311 le->ctrl = 0;
1312 le->opcode = OP_ADDR64 | HW_OWNER;
1313 sky2->tx_addr64 = addr64;
1314 }
1315
1316 le = get_tx_le(sky2);
1317 le->tx.addr = cpu_to_le32((u32) mapping);
1318 le->length = cpu_to_le16(frag->size);
1319 le->ctrl = ctrl;
1320 le->opcode = OP_BUFFER | HW_OWNER;
1321
1322 fre = sky2->tx_ring
1323 + RING_NEXT((re - sky2->tx_ring) + i, TX_RING_SIZE);
1324 pci_unmap_addr_set(fre, mapaddr, mapping);
1325 }
1326
1327 re->idx = sky2->tx_prod;
1328 le->ctrl |= EOP;
1329
1330 avail = tx_avail(sky2);
1331 if (mss != 0 || avail < TX_MIN_PENDING) {
1332 le->ctrl |= FRC_STAT;
1333 if (avail <= MAX_SKB_TX_LE)
1334 netif_stop_queue(dev);
1335 }
1336
1337 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1338
1339 out_unlock:
1340 spin_unlock(&sky2->tx_lock);
1341
1342 dev->trans_start = jiffies;
1343 return NETDEV_TX_OK;
1344 }
1345
1346 /*
1347 * Free ring elements from starting at tx_cons until "done"
1348 *
1349 * NB: the hardware will tell us about partial completion of multi-part
1350 * buffers; these are deferred until completion.
1351 */
1352 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1353 {
1354 struct net_device *dev = sky2->netdev;
1355 struct pci_dev *pdev = sky2->hw->pdev;
1356 u16 nxt, put;
1357 unsigned i;
1358
1359 BUG_ON(done >= TX_RING_SIZE);
1360
1361 if (unlikely(netif_msg_tx_done(sky2)))
1362 printk(KERN_DEBUG "%s: tx done, up to %u\n",
1363 dev->name, done);
1364
1365 for (put = sky2->tx_cons; put != done; put = nxt) {
1366 struct tx_ring_info *re = sky2->tx_ring + put;
1367 struct sk_buff *skb = re->skb;
1368
1369 nxt = re->idx;
1370 BUG_ON(nxt >= TX_RING_SIZE);
1371 prefetch(sky2->tx_ring + nxt);
1372
1373 /* Check for partial status */
1374 if (tx_dist(put, done) < tx_dist(put, nxt))
1375 break;
1376
1377 skb = re->skb;
1378 pci_unmap_single(pdev, pci_unmap_addr(re, mapaddr),
1379 skb_headlen(skb), PCI_DMA_TODEVICE);
1380
1381 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1382 struct tx_ring_info *fre;
1383 fre = sky2->tx_ring + RING_NEXT(put + i, TX_RING_SIZE);
1384 pci_unmap_page(pdev, pci_unmap_addr(fre, mapaddr),
1385 skb_shinfo(skb)->frags[i].size,
1386 PCI_DMA_TODEVICE);
1387 }
1388
1389 dev_kfree_skb(skb);
1390 }
1391
1392 sky2->tx_cons = put;
1393 if (tx_avail(sky2) > MAX_SKB_TX_LE)
1394 netif_wake_queue(dev);
1395 }
1396
1397 /* Cleanup all untransmitted buffers, assume transmitter not running */
1398 static void sky2_tx_clean(struct sky2_port *sky2)
1399 {
1400 spin_lock_bh(&sky2->tx_lock);
1401 sky2_tx_complete(sky2, sky2->tx_prod);
1402 spin_unlock_bh(&sky2->tx_lock);
1403 }
1404
1405 /* Network shutdown */
1406 static int sky2_down(struct net_device *dev)
1407 {
1408 struct sky2_port *sky2 = netdev_priv(dev);
1409 struct sky2_hw *hw = sky2->hw;
1410 unsigned port = sky2->port;
1411 u16 ctrl;
1412 u32 imask;
1413
1414 /* Never really got started! */
1415 if (!sky2->tx_le)
1416 return 0;
1417
1418 if (netif_msg_ifdown(sky2))
1419 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1420
1421 /* Stop more packets from being queued */
1422 netif_stop_queue(dev);
1423
1424 sky2_phy_reset(hw, port);
1425
1426 /* Stop transmitter */
1427 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1428 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1429
1430 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1431 RB_RST_SET | RB_DIS_OP_MD);
1432
1433 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1434 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1435 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1436
1437 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1438
1439 /* Workaround shared GMAC reset */
1440 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1441 && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1442 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1443
1444 /* Disable Force Sync bit and Enable Alloc bit */
1445 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1446 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1447
1448 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1449 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1450 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1451
1452 /* Reset the PCI FIFO of the async Tx queue */
1453 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1454 BMU_RST_SET | BMU_FIFO_RST);
1455
1456 /* Reset the Tx prefetch units */
1457 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1458 PREF_UNIT_RST_SET);
1459
1460 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1461
1462 sky2_rx_stop(sky2);
1463
1464 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1465 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1466
1467 /* Disable port IRQ */
1468 imask = sky2_read32(hw, B0_IMSK);
1469 imask &= ~portirq_msk[port];
1470 sky2_write32(hw, B0_IMSK, imask);
1471
1472 /* turn off LED's */
1473 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1474
1475 synchronize_irq(hw->pdev->irq);
1476
1477 sky2_tx_clean(sky2);
1478 sky2_rx_clean(sky2);
1479
1480 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1481 sky2->rx_le, sky2->rx_le_map);
1482 kfree(sky2->rx_ring);
1483
1484 pci_free_consistent(hw->pdev,
1485 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1486 sky2->tx_le, sky2->tx_le_map);
1487 kfree(sky2->tx_ring);
1488
1489 sky2->tx_le = NULL;
1490 sky2->rx_le = NULL;
1491
1492 sky2->rx_ring = NULL;
1493 sky2->tx_ring = NULL;
1494
1495 return 0;
1496 }
1497
1498 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1499 {
1500 if (!hw->copper)
1501 return SPEED_1000;
1502
1503 if (hw->chip_id == CHIP_ID_YUKON_FE)
1504 return (aux & PHY_M_PS_SPEED_100) ? SPEED_100 : SPEED_10;
1505
1506 switch (aux & PHY_M_PS_SPEED_MSK) {
1507 case PHY_M_PS_SPEED_1000:
1508 return SPEED_1000;
1509 case PHY_M_PS_SPEED_100:
1510 return SPEED_100;
1511 default:
1512 return SPEED_10;
1513 }
1514 }
1515
1516 static void sky2_link_up(struct sky2_port *sky2)
1517 {
1518 struct sky2_hw *hw = sky2->hw;
1519 unsigned port = sky2->port;
1520 u16 reg;
1521
1522 /* Enable Transmit FIFO Underrun */
1523 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
1524
1525 reg = gma_read16(hw, port, GM_GP_CTRL);
1526 if (sky2->autoneg == AUTONEG_DISABLE) {
1527 reg |= GM_GPCR_AU_ALL_DIS;
1528
1529 /* Is write/read necessary? Copied from sky2_mac_init */
1530 gma_write16(hw, port, GM_GP_CTRL, reg);
1531 gma_read16(hw, port, GM_GP_CTRL);
1532
1533 switch (sky2->speed) {
1534 case SPEED_1000:
1535 reg &= ~GM_GPCR_SPEED_100;
1536 reg |= GM_GPCR_SPEED_1000;
1537 break;
1538 case SPEED_100:
1539 reg &= ~GM_GPCR_SPEED_1000;
1540 reg |= GM_GPCR_SPEED_100;
1541 break;
1542 case SPEED_10:
1543 reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
1544 break;
1545 }
1546 } else
1547 reg &= ~GM_GPCR_AU_ALL_DIS;
1548
1549 if (sky2->duplex == DUPLEX_FULL || sky2->autoneg == AUTONEG_ENABLE)
1550 reg |= GM_GPCR_DUP_FULL;
1551
1552 /* enable Rx/Tx */
1553 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1554 gma_write16(hw, port, GM_GP_CTRL, reg);
1555 gma_read16(hw, port, GM_GP_CTRL);
1556
1557 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1558
1559 netif_carrier_on(sky2->netdev);
1560 netif_wake_queue(sky2->netdev);
1561
1562 /* Turn on link LED */
1563 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1564 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1565
1566 if (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U) {
1567 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
1568 u16 led = PHY_M_LEDC_LOS_CTRL(1); /* link active */
1569
1570 switch(sky2->speed) {
1571 case SPEED_10:
1572 led |= PHY_M_LEDC_INIT_CTRL(7);
1573 break;
1574
1575 case SPEED_100:
1576 led |= PHY_M_LEDC_STA1_CTRL(7);
1577 break;
1578
1579 case SPEED_1000:
1580 led |= PHY_M_LEDC_STA0_CTRL(7);
1581 break;
1582 }
1583
1584 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
1585 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, led);
1586 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
1587 }
1588
1589 if (netif_msg_link(sky2))
1590 printk(KERN_INFO PFX
1591 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1592 sky2->netdev->name, sky2->speed,
1593 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1594 (sky2->tx_pause && sky2->rx_pause) ? "both" :
1595 sky2->tx_pause ? "tx" : sky2->rx_pause ? "rx" : "none");
1596 }
1597
1598 static void sky2_link_down(struct sky2_port *sky2)
1599 {
1600 struct sky2_hw *hw = sky2->hw;
1601 unsigned port = sky2->port;
1602 u16 reg;
1603
1604 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1605
1606 reg = gma_read16(hw, port, GM_GP_CTRL);
1607 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1608 gma_write16(hw, port, GM_GP_CTRL, reg);
1609 gma_read16(hw, port, GM_GP_CTRL); /* PCI post */
1610
1611 if (sky2->rx_pause && !sky2->tx_pause) {
1612 /* restore Asymmetric Pause bit */
1613 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV,
1614 gm_phy_read(hw, port, PHY_MARV_AUNE_ADV)
1615 | PHY_M_AN_ASP);
1616 }
1617
1618 netif_carrier_off(sky2->netdev);
1619 netif_stop_queue(sky2->netdev);
1620
1621 /* Turn on link LED */
1622 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1623
1624 if (netif_msg_link(sky2))
1625 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
1626 sky2_phy_init(hw, port);
1627 }
1628
1629 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
1630 {
1631 struct sky2_hw *hw = sky2->hw;
1632 unsigned port = sky2->port;
1633 u16 lpa;
1634
1635 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
1636
1637 if (lpa & PHY_M_AN_RF) {
1638 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
1639 return -1;
1640 }
1641
1642 if (hw->chip_id != CHIP_ID_YUKON_FE &&
1643 gm_phy_read(hw, port, PHY_MARV_1000T_STAT) & PHY_B_1000S_MSF) {
1644 printk(KERN_ERR PFX "%s: master/slave fault",
1645 sky2->netdev->name);
1646 return -1;
1647 }
1648
1649 if (!(aux & PHY_M_PS_SPDUP_RES)) {
1650 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
1651 sky2->netdev->name);
1652 return -1;
1653 }
1654
1655 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1656
1657 sky2->speed = sky2_phy_speed(hw, aux);
1658
1659 /* Pause bits are offset (9..8) */
1660 if (hw->chip_id == CHIP_ID_YUKON_XL || hw->chip_id == CHIP_ID_YUKON_EC_U)
1661 aux >>= 6;
1662
1663 sky2->rx_pause = (aux & PHY_M_PS_RX_P_EN) != 0;
1664 sky2->tx_pause = (aux & PHY_M_PS_TX_P_EN) != 0;
1665
1666 if ((sky2->tx_pause || sky2->rx_pause)
1667 && !(sky2->speed < SPEED_1000 && sky2->duplex == DUPLEX_HALF))
1668 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
1669 else
1670 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1671
1672 return 0;
1673 }
1674
1675 /* Interrupt from PHY */
1676 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
1677 {
1678 struct net_device *dev = hw->dev[port];
1679 struct sky2_port *sky2 = netdev_priv(dev);
1680 u16 istatus, phystat;
1681
1682 spin_lock(&sky2->phy_lock);
1683 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
1684 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
1685
1686 if (!netif_running(dev))
1687 goto out;
1688
1689 if (netif_msg_intr(sky2))
1690 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
1691 sky2->netdev->name, istatus, phystat);
1692
1693 if (istatus & PHY_M_IS_AN_COMPL) {
1694 if (sky2_autoneg_done(sky2, phystat) == 0)
1695 sky2_link_up(sky2);
1696 goto out;
1697 }
1698
1699 if (istatus & PHY_M_IS_LSP_CHANGE)
1700 sky2->speed = sky2_phy_speed(hw, phystat);
1701
1702 if (istatus & PHY_M_IS_DUP_CHANGE)
1703 sky2->duplex =
1704 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1705
1706 if (istatus & PHY_M_IS_LST_CHANGE) {
1707 if (phystat & PHY_M_PS_LINK_UP)
1708 sky2_link_up(sky2);
1709 else
1710 sky2_link_down(sky2);
1711 }
1712 out:
1713 spin_unlock(&sky2->phy_lock);
1714 }
1715
1716
1717 /* Transmit timeout is only called if we are running, carries is up
1718 * and tx queue is full (stopped).
1719 */
1720 static void sky2_tx_timeout(struct net_device *dev)
1721 {
1722 struct sky2_port *sky2 = netdev_priv(dev);
1723 struct sky2_hw *hw = sky2->hw;
1724 unsigned txq = txqaddr[sky2->port];
1725 u16 report, done;
1726
1727 if (netif_msg_timer(sky2))
1728 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
1729
1730 report = sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX);
1731 done = sky2_read16(hw, Q_ADDR(txq, Q_DONE));
1732
1733 printk(KERN_DEBUG PFX "%s: transmit ring %u .. %u report=%u done=%u\n",
1734 dev->name,
1735 sky2->tx_cons, sky2->tx_prod, report, done);
1736
1737 if (report != done) {
1738 printk(KERN_INFO PFX "status burst pending (irq moderation?)\n");
1739
1740 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
1741 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
1742 } else if (report != sky2->tx_cons) {
1743 printk(KERN_INFO PFX "status report lost?\n");
1744
1745 spin_lock_bh(&sky2->tx_lock);
1746 sky2_tx_complete(sky2, report);
1747 spin_unlock_bh(&sky2->tx_lock);
1748 } else {
1749 printk(KERN_INFO PFX "hardware hung? flushing\n");
1750
1751 sky2_write32(hw, Q_ADDR(txq, Q_CSR), BMU_STOP);
1752 sky2_write32(hw, Y2_QADDR(txq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1753
1754 sky2_tx_clean(sky2);
1755
1756 sky2_qset(hw, txq);
1757 sky2_prefetch_init(hw, txq, sky2->tx_le_map, TX_RING_SIZE - 1);
1758 }
1759 }
1760
1761
1762 /* Want receive buffer size to be multiple of 64 bits
1763 * and incl room for vlan and truncation
1764 */
1765 static inline unsigned sky2_buf_size(int mtu)
1766 {
1767 return ALIGN(mtu + ETH_HLEN + VLAN_HLEN, 8) + 8;
1768 }
1769
1770 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
1771 {
1772 struct sky2_port *sky2 = netdev_priv(dev);
1773 struct sky2_hw *hw = sky2->hw;
1774 int err;
1775 u16 ctl, mode;
1776 u32 imask;
1777
1778 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
1779 return -EINVAL;
1780
1781 if (hw->chip_id == CHIP_ID_YUKON_EC_U && new_mtu > ETH_DATA_LEN)
1782 return -EINVAL;
1783
1784 if (!netif_running(dev)) {
1785 dev->mtu = new_mtu;
1786 return 0;
1787 }
1788
1789 imask = sky2_read32(hw, B0_IMSK);
1790 sky2_write32(hw, B0_IMSK, 0);
1791
1792 dev->trans_start = jiffies; /* prevent tx timeout */
1793 netif_stop_queue(dev);
1794 netif_poll_disable(hw->dev[0]);
1795
1796 synchronize_irq(hw->pdev->irq);
1797
1798 ctl = gma_read16(hw, sky2->port, GM_GP_CTRL);
1799 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
1800 sky2_rx_stop(sky2);
1801 sky2_rx_clean(sky2);
1802
1803 dev->mtu = new_mtu;
1804 sky2->rx_bufsize = sky2_buf_size(new_mtu);
1805 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
1806 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
1807
1808 if (dev->mtu > ETH_DATA_LEN)
1809 mode |= GM_SMOD_JUMBO_ENA;
1810
1811 gma_write16(hw, sky2->port, GM_SERIAL_MODE, mode);
1812
1813 sky2_write8(hw, RB_ADDR(rxqaddr[sky2->port], RB_CTRL), RB_ENA_OP_MD);
1814
1815 err = sky2_rx_start(sky2);
1816 sky2_write32(hw, B0_IMSK, imask);
1817
1818 if (err)
1819 dev_close(dev);
1820 else {
1821 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl);
1822
1823 netif_poll_enable(hw->dev[0]);
1824 netif_wake_queue(dev);
1825 }
1826
1827 return err;
1828 }
1829
1830 /*
1831 * Receive one packet.
1832 * For small packets or errors, just reuse existing skb.
1833 * For larger packets, get new buffer.
1834 */
1835 static struct sk_buff *sky2_receive(struct sky2_port *sky2,
1836 u16 length, u32 status)
1837 {
1838 struct ring_info *re = sky2->rx_ring + sky2->rx_next;
1839 struct sk_buff *skb = NULL;
1840
1841 if (unlikely(netif_msg_rx_status(sky2)))
1842 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
1843 sky2->netdev->name, sky2->rx_next, status, length);
1844
1845 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
1846 prefetch(sky2->rx_ring + sky2->rx_next);
1847
1848 if (status & GMR_FS_ANY_ERR)
1849 goto error;
1850
1851 if (!(status & GMR_FS_RX_OK))
1852 goto resubmit;
1853
1854 if (length > sky2->netdev->mtu + ETH_HLEN)
1855 goto oversize;
1856
1857 if (length < copybreak) {
1858 skb = alloc_skb(length + 2, GFP_ATOMIC);
1859 if (!skb)
1860 goto resubmit;
1861
1862 skb_reserve(skb, 2);
1863 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->mapaddr,
1864 length, PCI_DMA_FROMDEVICE);
1865 memcpy(skb->data, re->skb->data, length);
1866 skb->ip_summed = re->skb->ip_summed;
1867 skb->csum = re->skb->csum;
1868 pci_dma_sync_single_for_device(sky2->hw->pdev, re->mapaddr,
1869 length, PCI_DMA_FROMDEVICE);
1870 } else {
1871 struct sk_buff *nskb;
1872
1873 nskb = sky2_alloc_skb(sky2->rx_bufsize, GFP_ATOMIC);
1874 if (!nskb)
1875 goto resubmit;
1876
1877 skb = re->skb;
1878 re->skb = nskb;
1879 pci_unmap_single(sky2->hw->pdev, re->mapaddr,
1880 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
1881 prefetch(skb->data);
1882
1883 re->mapaddr = pci_map_single(sky2->hw->pdev, nskb->data,
1884 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
1885 }
1886
1887 skb_put(skb, length);
1888 resubmit:
1889 re->skb->ip_summed = CHECKSUM_NONE;
1890 sky2_rx_add(sky2, re->mapaddr);
1891
1892 /* Tell receiver about new buffers. */
1893 sky2_put_idx(sky2->hw, rxqaddr[sky2->port], sky2->rx_put);
1894
1895 return skb;
1896
1897 oversize:
1898 ++sky2->net_stats.rx_over_errors;
1899 goto resubmit;
1900
1901 error:
1902 ++sky2->net_stats.rx_errors;
1903
1904 if (netif_msg_rx_err(sky2) && net_ratelimit())
1905 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
1906 sky2->netdev->name, status, length);
1907
1908 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
1909 sky2->net_stats.rx_length_errors++;
1910 if (status & GMR_FS_FRAGMENT)
1911 sky2->net_stats.rx_frame_errors++;
1912 if (status & GMR_FS_CRC_ERR)
1913 sky2->net_stats.rx_crc_errors++;
1914 if (status & GMR_FS_RX_FF_OV)
1915 sky2->net_stats.rx_fifo_errors++;
1916
1917 goto resubmit;
1918 }
1919
1920 /* Transmit complete */
1921 static inline void sky2_tx_done(struct net_device *dev, u16 last)
1922 {
1923 struct sky2_port *sky2 = netdev_priv(dev);
1924
1925 if (netif_running(dev)) {
1926 spin_lock(&sky2->tx_lock);
1927 sky2_tx_complete(sky2, last);
1928 spin_unlock(&sky2->tx_lock);
1929 }
1930 }
1931
1932 /* Is status ring empty or is there more to do? */
1933 static inline int sky2_more_work(const struct sky2_hw *hw)
1934 {
1935 return (hw->st_idx != sky2_read16(hw, STAT_PUT_IDX));
1936 }
1937
1938 /* Process status response ring */
1939 static int sky2_status_intr(struct sky2_hw *hw, int to_do)
1940 {
1941 int work_done = 0;
1942 u16 hwidx = sky2_read16(hw, STAT_PUT_IDX);
1943
1944 rmb();
1945
1946 while (hw->st_idx != hwidx) {
1947 struct sky2_status_le *le = hw->st_le + hw->st_idx;
1948 struct net_device *dev;
1949 struct sky2_port *sky2;
1950 struct sk_buff *skb;
1951 u32 status;
1952 u16 length;
1953
1954 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
1955
1956 BUG_ON(le->link >= 2);
1957 dev = hw->dev[le->link];
1958
1959 sky2 = netdev_priv(dev);
1960 length = le->length;
1961 status = le->status;
1962
1963 switch (le->opcode & ~HW_OWNER) {
1964 case OP_RXSTAT:
1965 skb = sky2_receive(sky2, length, status);
1966 if (!skb)
1967 break;
1968
1969 skb->dev = dev;
1970 skb->protocol = eth_type_trans(skb, dev);
1971 dev->last_rx = jiffies;
1972
1973 #ifdef SKY2_VLAN_TAG_USED
1974 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
1975 vlan_hwaccel_receive_skb(skb,
1976 sky2->vlgrp,
1977 be16_to_cpu(sky2->rx_tag));
1978 } else
1979 #endif
1980 netif_receive_skb(skb);
1981
1982 if (++work_done >= to_do)
1983 goto exit_loop;
1984 break;
1985
1986 #ifdef SKY2_VLAN_TAG_USED
1987 case OP_RXVLAN:
1988 sky2->rx_tag = length;
1989 break;
1990
1991 case OP_RXCHKSVLAN:
1992 sky2->rx_tag = length;
1993 /* fall through */
1994 #endif
1995 case OP_RXCHKS:
1996 skb = sky2->rx_ring[sky2->rx_next].skb;
1997 skb->ip_summed = CHECKSUM_HW;
1998 skb->csum = le16_to_cpu(status);
1999 break;
2000
2001 case OP_TXINDEXLE:
2002 /* TX index reports status for both ports */
2003 BUILD_BUG_ON(TX_RING_SIZE > 0x1000);
2004 sky2_tx_done(hw->dev[0], status & 0xfff);
2005 if (hw->dev[1])
2006 sky2_tx_done(hw->dev[1],
2007 ((status >> 24) & 0xff)
2008 | (u16)(length & 0xf) << 8);
2009 break;
2010
2011 default:
2012 if (net_ratelimit())
2013 printk(KERN_WARNING PFX
2014 "unknown status opcode 0x%x\n", le->opcode);
2015 goto exit_loop;
2016 }
2017 }
2018
2019 exit_loop:
2020 return work_done;
2021 }
2022
2023 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2024 {
2025 struct net_device *dev = hw->dev[port];
2026
2027 if (net_ratelimit())
2028 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
2029 dev->name, status);
2030
2031 if (status & Y2_IS_PAR_RD1) {
2032 if (net_ratelimit())
2033 printk(KERN_ERR PFX "%s: ram data read parity error\n",
2034 dev->name);
2035 /* Clear IRQ */
2036 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2037 }
2038
2039 if (status & Y2_IS_PAR_WR1) {
2040 if (net_ratelimit())
2041 printk(KERN_ERR PFX "%s: ram data write parity error\n",
2042 dev->name);
2043
2044 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2045 }
2046
2047 if (status & Y2_IS_PAR_MAC1) {
2048 if (net_ratelimit())
2049 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
2050 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2051 }
2052
2053 if (status & Y2_IS_PAR_RX1) {
2054 if (net_ratelimit())
2055 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
2056 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2057 }
2058
2059 if (status & Y2_IS_TCP_TXA1) {
2060 if (net_ratelimit())
2061 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
2062 dev->name);
2063 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2064 }
2065 }
2066
2067 static void sky2_hw_intr(struct sky2_hw *hw)
2068 {
2069 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2070
2071 if (status & Y2_IS_TIST_OV)
2072 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2073
2074 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2075 u16 pci_err;
2076
2077 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2078 if (net_ratelimit())
2079 printk(KERN_ERR PFX "%s: pci hw error (0x%x)\n",
2080 pci_name(hw->pdev), pci_err);
2081
2082 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2083 sky2_pci_write16(hw, PCI_STATUS,
2084 pci_err | PCI_STATUS_ERROR_BITS);
2085 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2086 }
2087
2088 if (status & Y2_IS_PCI_EXP) {
2089 /* PCI-Express uncorrectable Error occurred */
2090 u32 pex_err;
2091
2092 pex_err = sky2_pci_read32(hw, PEX_UNC_ERR_STAT);
2093
2094 if (net_ratelimit())
2095 printk(KERN_ERR PFX "%s: pci express error (0x%x)\n",
2096 pci_name(hw->pdev), pex_err);
2097
2098 /* clear the interrupt */
2099 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2100 sky2_pci_write32(hw, PEX_UNC_ERR_STAT,
2101 0xffffffffUL);
2102 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2103
2104 if (pex_err & PEX_FATAL_ERRORS) {
2105 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2106 hwmsk &= ~Y2_IS_PCI_EXP;
2107 sky2_write32(hw, B0_HWE_IMSK, hwmsk);
2108 }
2109 }
2110
2111 if (status & Y2_HWE_L1_MASK)
2112 sky2_hw_error(hw, 0, status);
2113 status >>= 8;
2114 if (status & Y2_HWE_L1_MASK)
2115 sky2_hw_error(hw, 1, status);
2116 }
2117
2118 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2119 {
2120 struct net_device *dev = hw->dev[port];
2121 struct sky2_port *sky2 = netdev_priv(dev);
2122 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2123
2124 if (netif_msg_intr(sky2))
2125 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2126 dev->name, status);
2127
2128 if (status & GM_IS_RX_FF_OR) {
2129 ++sky2->net_stats.rx_fifo_errors;
2130 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2131 }
2132
2133 if (status & GM_IS_TX_FF_UR) {
2134 ++sky2->net_stats.tx_fifo_errors;
2135 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2136 }
2137 }
2138
2139 /* This should never happen it is a fatal situation */
2140 static void sky2_descriptor_error(struct sky2_hw *hw, unsigned port,
2141 const char *rxtx, u32 mask)
2142 {
2143 struct net_device *dev = hw->dev[port];
2144 struct sky2_port *sky2 = netdev_priv(dev);
2145 u32 imask;
2146
2147 printk(KERN_ERR PFX "%s: %s descriptor error (hardware problem)\n",
2148 dev ? dev->name : "<not registered>", rxtx);
2149
2150 imask = sky2_read32(hw, B0_IMSK);
2151 imask &= ~mask;
2152 sky2_write32(hw, B0_IMSK, imask);
2153
2154 if (dev) {
2155 spin_lock(&sky2->phy_lock);
2156 sky2_link_down(sky2);
2157 spin_unlock(&sky2->phy_lock);
2158 }
2159 }
2160
2161 /* If idle then force a fake soft NAPI poll once a second
2162 * to work around cases where sharing an edge triggered interrupt.
2163 */
2164 static inline void sky2_idle_start(struct sky2_hw *hw)
2165 {
2166 if (idle_timeout > 0)
2167 mod_timer(&hw->idle_timer,
2168 jiffies + msecs_to_jiffies(idle_timeout));
2169 }
2170
2171 static void sky2_idle(unsigned long arg)
2172 {
2173 struct sky2_hw *hw = (struct sky2_hw *) arg;
2174 struct net_device *dev = hw->dev[0];
2175
2176 if (__netif_rx_schedule_prep(dev))
2177 __netif_rx_schedule(dev);
2178
2179 mod_timer(&hw->idle_timer, jiffies + msecs_to_jiffies(idle_timeout));
2180 }
2181
2182
2183 static int sky2_poll(struct net_device *dev0, int *budget)
2184 {
2185 struct sky2_hw *hw = ((struct sky2_port *) netdev_priv(dev0))->hw;
2186 int work_limit = min(dev0->quota, *budget);
2187 int work_done = 0;
2188 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2189
2190 if (!~status)
2191 goto out;
2192
2193 if (status & Y2_IS_HW_ERR)
2194 sky2_hw_intr(hw);
2195
2196 if (status & Y2_IS_IRQ_PHY1)
2197 sky2_phy_intr(hw, 0);
2198
2199 if (status & Y2_IS_IRQ_PHY2)
2200 sky2_phy_intr(hw, 1);
2201
2202 if (status & Y2_IS_IRQ_MAC1)
2203 sky2_mac_intr(hw, 0);
2204
2205 if (status & Y2_IS_IRQ_MAC2)
2206 sky2_mac_intr(hw, 1);
2207
2208 if (status & Y2_IS_CHK_RX1)
2209 sky2_descriptor_error(hw, 0, "receive", Y2_IS_CHK_RX1);
2210
2211 if (status & Y2_IS_CHK_RX2)
2212 sky2_descriptor_error(hw, 1, "receive", Y2_IS_CHK_RX2);
2213
2214 if (status & Y2_IS_CHK_TXA1)
2215 sky2_descriptor_error(hw, 0, "transmit", Y2_IS_CHK_TXA1);
2216
2217 if (status & Y2_IS_CHK_TXA2)
2218 sky2_descriptor_error(hw, 1, "transmit", Y2_IS_CHK_TXA2);
2219
2220 work_done = sky2_status_intr(hw, work_limit);
2221 *budget -= work_done;
2222 dev0->quota -= work_done;
2223
2224 if (status & Y2_IS_STAT_BMU)
2225 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2226
2227 if (sky2_more_work(hw))
2228 return 1;
2229 out:
2230 netif_rx_complete(dev0);
2231
2232 sky2_read32(hw, B0_Y2_SP_LISR);
2233 return 0;
2234 }
2235
2236 static irqreturn_t sky2_intr(int irq, void *dev_id, struct pt_regs *regs)
2237 {
2238 struct sky2_hw *hw = dev_id;
2239 struct net_device *dev0 = hw->dev[0];
2240 u32 status;
2241
2242 /* Reading this mask interrupts as side effect */
2243 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2244 if (status == 0 || status == ~0)
2245 return IRQ_NONE;
2246
2247 prefetch(&hw->st_le[hw->st_idx]);
2248 if (likely(__netif_rx_schedule_prep(dev0)))
2249 __netif_rx_schedule(dev0);
2250
2251 return IRQ_HANDLED;
2252 }
2253
2254 #ifdef CONFIG_NET_POLL_CONTROLLER
2255 static void sky2_netpoll(struct net_device *dev)
2256 {
2257 struct sky2_port *sky2 = netdev_priv(dev);
2258 struct net_device *dev0 = sky2->hw->dev[0];
2259
2260 if (netif_running(dev) && __netif_rx_schedule_prep(dev0))
2261 __netif_rx_schedule(dev0);
2262 }
2263 #endif
2264
2265 /* Chip internal frequency for clock calculations */
2266 static inline u32 sky2_mhz(const struct sky2_hw *hw)
2267 {
2268 switch (hw->chip_id) {
2269 case CHIP_ID_YUKON_EC:
2270 case CHIP_ID_YUKON_EC_U:
2271 return 125; /* 125 Mhz */
2272 case CHIP_ID_YUKON_FE:
2273 return 100; /* 100 Mhz */
2274 default: /* YUKON_XL */
2275 return 156; /* 156 Mhz */
2276 }
2277 }
2278
2279 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2280 {
2281 return sky2_mhz(hw) * us;
2282 }
2283
2284 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2285 {
2286 return clk / sky2_mhz(hw);
2287 }
2288
2289
2290 static int __devinit sky2_reset(struct sky2_hw *hw)
2291 {
2292 u16 status;
2293 u8 t8, pmd_type;
2294 int i;
2295
2296 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2297
2298 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2299 if (hw->chip_id < CHIP_ID_YUKON_XL || hw->chip_id > CHIP_ID_YUKON_FE) {
2300 printk(KERN_ERR PFX "%s: unsupported chip type 0x%x\n",
2301 pci_name(hw->pdev), hw->chip_id);
2302 return -EOPNOTSUPP;
2303 }
2304
2305 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2306
2307 /* This rev is really old, and requires untested workarounds */
2308 if (hw->chip_id == CHIP_ID_YUKON_EC && hw->chip_rev == CHIP_REV_YU_EC_A1) {
2309 printk(KERN_ERR PFX "%s: unsupported revision Yukon-%s (0x%x) rev %d\n",
2310 pci_name(hw->pdev), yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
2311 hw->chip_id, hw->chip_rev);
2312 return -EOPNOTSUPP;
2313 }
2314
2315 /* disable ASF */
2316 if (hw->chip_id <= CHIP_ID_YUKON_EC) {
2317 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2318 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2319 }
2320
2321 /* do a SW reset */
2322 sky2_write8(hw, B0_CTST, CS_RST_SET);
2323 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2324
2325 /* clear PCI errors, if any */
2326 status = sky2_pci_read16(hw, PCI_STATUS);
2327
2328 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2329 sky2_pci_write16(hw, PCI_STATUS, status | PCI_STATUS_ERROR_BITS);
2330
2331
2332 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2333
2334 /* clear any PEX errors */
2335 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
2336 sky2_pci_write32(hw, PEX_UNC_ERR_STAT, 0xffffffffUL);
2337
2338
2339 pmd_type = sky2_read8(hw, B2_PMD_TYP);
2340 hw->copper = !(pmd_type == 'L' || pmd_type == 'S');
2341
2342 hw->ports = 1;
2343 t8 = sky2_read8(hw, B2_Y2_HW_RES);
2344 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
2345 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2346 ++hw->ports;
2347 }
2348
2349 sky2_set_power_state(hw, PCI_D0);
2350
2351 for (i = 0; i < hw->ports; i++) {
2352 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2353 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2354 }
2355
2356 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2357
2358 /* Clear I2C IRQ noise */
2359 sky2_write32(hw, B2_I2C_IRQ, 1);
2360
2361 /* turn off hardware timer (unused) */
2362 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2363 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
2364
2365 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
2366
2367 /* Turn off descriptor polling */
2368 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
2369
2370 /* Turn off receive timestamp */
2371 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
2372 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2373
2374 /* enable the Tx Arbiters */
2375 for (i = 0; i < hw->ports; i++)
2376 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
2377
2378 /* Initialize ram interface */
2379 for (i = 0; i < hw->ports; i++) {
2380 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
2381
2382 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
2383 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
2384 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
2385 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
2386 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
2387 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
2388 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
2389 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
2390 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
2391 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
2392 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
2393 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
2394 }
2395
2396 sky2_write32(hw, B0_HWE_IMSK, Y2_HWE_ALL_MASK);
2397
2398 for (i = 0; i < hw->ports; i++)
2399 sky2_phy_reset(hw, i);
2400
2401 memset(hw->st_le, 0, STATUS_LE_BYTES);
2402 hw->st_idx = 0;
2403
2404 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
2405 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
2406
2407 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
2408 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
2409
2410 /* Set the list last index */
2411 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
2412
2413 sky2_write16(hw, STAT_TX_IDX_TH, 10);
2414 sky2_write8(hw, STAT_FIFO_WM, 16);
2415
2416 /* set Status-FIFO ISR watermark */
2417 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
2418 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
2419 else
2420 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
2421
2422 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
2423 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
2424 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
2425
2426 /* enable status unit */
2427 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
2428
2429 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2430 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2431 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2432
2433 return 0;
2434 }
2435
2436 static u32 sky2_supported_modes(const struct sky2_hw *hw)
2437 {
2438 u32 modes;
2439 if (hw->copper) {
2440 modes = SUPPORTED_10baseT_Half
2441 | SUPPORTED_10baseT_Full
2442 | SUPPORTED_100baseT_Half
2443 | SUPPORTED_100baseT_Full
2444 | SUPPORTED_Autoneg | SUPPORTED_TP;
2445
2446 if (hw->chip_id != CHIP_ID_YUKON_FE)
2447 modes |= SUPPORTED_1000baseT_Half
2448 | SUPPORTED_1000baseT_Full;
2449 } else
2450 modes = SUPPORTED_1000baseT_Full | SUPPORTED_FIBRE
2451 | SUPPORTED_Autoneg;
2452 return modes;
2453 }
2454
2455 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2456 {
2457 struct sky2_port *sky2 = netdev_priv(dev);
2458 struct sky2_hw *hw = sky2->hw;
2459
2460 ecmd->transceiver = XCVR_INTERNAL;
2461 ecmd->supported = sky2_supported_modes(hw);
2462 ecmd->phy_address = PHY_ADDR_MARV;
2463 if (hw->copper) {
2464 ecmd->supported = SUPPORTED_10baseT_Half
2465 | SUPPORTED_10baseT_Full
2466 | SUPPORTED_100baseT_Half
2467 | SUPPORTED_100baseT_Full
2468 | SUPPORTED_1000baseT_Half
2469 | SUPPORTED_1000baseT_Full
2470 | SUPPORTED_Autoneg | SUPPORTED_TP;
2471 ecmd->port = PORT_TP;
2472 } else
2473 ecmd->port = PORT_FIBRE;
2474
2475 ecmd->advertising = sky2->advertising;
2476 ecmd->autoneg = sky2->autoneg;
2477 ecmd->speed = sky2->speed;
2478 ecmd->duplex = sky2->duplex;
2479 return 0;
2480 }
2481
2482 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2483 {
2484 struct sky2_port *sky2 = netdev_priv(dev);
2485 const struct sky2_hw *hw = sky2->hw;
2486 u32 supported = sky2_supported_modes(hw);
2487
2488 if (ecmd->autoneg == AUTONEG_ENABLE) {
2489 ecmd->advertising = supported;
2490 sky2->duplex = -1;
2491 sky2->speed = -1;
2492 } else {
2493 u32 setting;
2494
2495 switch (ecmd->speed) {
2496 case SPEED_1000:
2497 if (ecmd->duplex == DUPLEX_FULL)
2498 setting = SUPPORTED_1000baseT_Full;
2499 else if (ecmd->duplex == DUPLEX_HALF)
2500 setting = SUPPORTED_1000baseT_Half;
2501 else
2502 return -EINVAL;
2503 break;
2504 case SPEED_100:
2505 if (ecmd->duplex == DUPLEX_FULL)
2506 setting = SUPPORTED_100baseT_Full;
2507 else if (ecmd->duplex == DUPLEX_HALF)
2508 setting = SUPPORTED_100baseT_Half;
2509 else
2510 return -EINVAL;
2511 break;
2512
2513 case SPEED_10:
2514 if (ecmd->duplex == DUPLEX_FULL)
2515 setting = SUPPORTED_10baseT_Full;
2516 else if (ecmd->duplex == DUPLEX_HALF)
2517 setting = SUPPORTED_10baseT_Half;
2518 else
2519 return -EINVAL;
2520 break;
2521 default:
2522 return -EINVAL;
2523 }
2524
2525 if ((setting & supported) == 0)
2526 return -EINVAL;
2527
2528 sky2->speed = ecmd->speed;
2529 sky2->duplex = ecmd->duplex;
2530 }
2531
2532 sky2->autoneg = ecmd->autoneg;
2533 sky2->advertising = ecmd->advertising;
2534
2535 if (netif_running(dev))
2536 sky2_phy_reinit(sky2);
2537
2538 return 0;
2539 }
2540
2541 static void sky2_get_drvinfo(struct net_device *dev,
2542 struct ethtool_drvinfo *info)
2543 {
2544 struct sky2_port *sky2 = netdev_priv(dev);
2545
2546 strcpy(info->driver, DRV_NAME);
2547 strcpy(info->version, DRV_VERSION);
2548 strcpy(info->fw_version, "N/A");
2549 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
2550 }
2551
2552 static const struct sky2_stat {
2553 char name[ETH_GSTRING_LEN];
2554 u16 offset;
2555 } sky2_stats[] = {
2556 { "tx_bytes", GM_TXO_OK_HI },
2557 { "rx_bytes", GM_RXO_OK_HI },
2558 { "tx_broadcast", GM_TXF_BC_OK },
2559 { "rx_broadcast", GM_RXF_BC_OK },
2560 { "tx_multicast", GM_TXF_MC_OK },
2561 { "rx_multicast", GM_RXF_MC_OK },
2562 { "tx_unicast", GM_TXF_UC_OK },
2563 { "rx_unicast", GM_RXF_UC_OK },
2564 { "tx_mac_pause", GM_TXF_MPAUSE },
2565 { "rx_mac_pause", GM_RXF_MPAUSE },
2566 { "collisions", GM_TXF_COL },
2567 { "late_collision",GM_TXF_LAT_COL },
2568 { "aborted", GM_TXF_ABO_COL },
2569 { "single_collisions", GM_TXF_SNG_COL },
2570 { "multi_collisions", GM_TXF_MUL_COL },
2571
2572 { "rx_short", GM_RXF_SHT },
2573 { "rx_runt", GM_RXE_FRAG },
2574 { "rx_64_byte_packets", GM_RXF_64B },
2575 { "rx_65_to_127_byte_packets", GM_RXF_127B },
2576 { "rx_128_to_255_byte_packets", GM_RXF_255B },
2577 { "rx_256_to_511_byte_packets", GM_RXF_511B },
2578 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
2579 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
2580 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
2581 { "rx_too_long", GM_RXF_LNG_ERR },
2582 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
2583 { "rx_jabber", GM_RXF_JAB_PKT },
2584 { "rx_fcs_error", GM_RXF_FCS_ERR },
2585
2586 { "tx_64_byte_packets", GM_TXF_64B },
2587 { "tx_65_to_127_byte_packets", GM_TXF_127B },
2588 { "tx_128_to_255_byte_packets", GM_TXF_255B },
2589 { "tx_256_to_511_byte_packets", GM_TXF_511B },
2590 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
2591 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
2592 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
2593 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
2594 };
2595
2596 static u32 sky2_get_rx_csum(struct net_device *dev)
2597 {
2598 struct sky2_port *sky2 = netdev_priv(dev);
2599
2600 return sky2->rx_csum;
2601 }
2602
2603 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
2604 {
2605 struct sky2_port *sky2 = netdev_priv(dev);
2606
2607 sky2->rx_csum = data;
2608
2609 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2610 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
2611
2612 return 0;
2613 }
2614
2615 static u32 sky2_get_msglevel(struct net_device *netdev)
2616 {
2617 struct sky2_port *sky2 = netdev_priv(netdev);
2618 return sky2->msg_enable;
2619 }
2620
2621 static int sky2_nway_reset(struct net_device *dev)
2622 {
2623 struct sky2_port *sky2 = netdev_priv(dev);
2624
2625 if (sky2->autoneg != AUTONEG_ENABLE)
2626 return -EINVAL;
2627
2628 sky2_phy_reinit(sky2);
2629
2630 return 0;
2631 }
2632
2633 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
2634 {
2635 struct sky2_hw *hw = sky2->hw;
2636 unsigned port = sky2->port;
2637 int i;
2638
2639 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
2640 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
2641 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
2642 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
2643
2644 for (i = 2; i < count; i++)
2645 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
2646 }
2647
2648 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
2649 {
2650 struct sky2_port *sky2 = netdev_priv(netdev);
2651 sky2->msg_enable = value;
2652 }
2653
2654 static int sky2_get_stats_count(struct net_device *dev)
2655 {
2656 return ARRAY_SIZE(sky2_stats);
2657 }
2658
2659 static void sky2_get_ethtool_stats(struct net_device *dev,
2660 struct ethtool_stats *stats, u64 * data)
2661 {
2662 struct sky2_port *sky2 = netdev_priv(dev);
2663
2664 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
2665 }
2666
2667 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
2668 {
2669 int i;
2670
2671 switch (stringset) {
2672 case ETH_SS_STATS:
2673 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
2674 memcpy(data + i * ETH_GSTRING_LEN,
2675 sky2_stats[i].name, ETH_GSTRING_LEN);
2676 break;
2677 }
2678 }
2679
2680 /* Use hardware MIB variables for critical path statistics and
2681 * transmit feedback not reported at interrupt.
2682 * Other errors are accounted for in interrupt handler.
2683 */
2684 static struct net_device_stats *sky2_get_stats(struct net_device *dev)
2685 {
2686 struct sky2_port *sky2 = netdev_priv(dev);
2687 u64 data[13];
2688
2689 sky2_phy_stats(sky2, data, ARRAY_SIZE(data));
2690
2691 sky2->net_stats.tx_bytes = data[0];
2692 sky2->net_stats.rx_bytes = data[1];
2693 sky2->net_stats.tx_packets = data[2] + data[4] + data[6];
2694 sky2->net_stats.rx_packets = data[3] + data[5] + data[7];
2695 sky2->net_stats.multicast = data[3] + data[5];
2696 sky2->net_stats.collisions = data[10];
2697 sky2->net_stats.tx_aborted_errors = data[12];
2698
2699 return &sky2->net_stats;
2700 }
2701
2702 static int sky2_set_mac_address(struct net_device *dev, void *p)
2703 {
2704 struct sky2_port *sky2 = netdev_priv(dev);
2705 struct sky2_hw *hw = sky2->hw;
2706 unsigned port = sky2->port;
2707 const struct sockaddr *addr = p;
2708
2709 if (!is_valid_ether_addr(addr->sa_data))
2710 return -EADDRNOTAVAIL;
2711
2712 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
2713 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
2714 dev->dev_addr, ETH_ALEN);
2715 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
2716 dev->dev_addr, ETH_ALEN);
2717
2718 /* virtual address for data */
2719 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
2720
2721 /* physical address: used for pause frames */
2722 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
2723
2724 return 0;
2725 }
2726
2727 static void sky2_set_multicast(struct net_device *dev)
2728 {
2729 struct sky2_port *sky2 = netdev_priv(dev);
2730 struct sky2_hw *hw = sky2->hw;
2731 unsigned port = sky2->port;
2732 struct dev_mc_list *list = dev->mc_list;
2733 u16 reg;
2734 u8 filter[8];
2735
2736 memset(filter, 0, sizeof(filter));
2737
2738 reg = gma_read16(hw, port, GM_RX_CTRL);
2739 reg |= GM_RXCR_UCF_ENA;
2740
2741 if (dev->flags & IFF_PROMISC) /* promiscuous */
2742 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
2743 else if ((dev->flags & IFF_ALLMULTI) || dev->mc_count > 16) /* all multicast */
2744 memset(filter, 0xff, sizeof(filter));
2745 else if (dev->mc_count == 0) /* no multicast */
2746 reg &= ~GM_RXCR_MCF_ENA;
2747 else {
2748 int i;
2749 reg |= GM_RXCR_MCF_ENA;
2750
2751 for (i = 0; list && i < dev->mc_count; i++, list = list->next) {
2752 u32 bit = ether_crc(ETH_ALEN, list->dmi_addr) & 0x3f;
2753 filter[bit / 8] |= 1 << (bit % 8);
2754 }
2755 }
2756
2757 gma_write16(hw, port, GM_MC_ADDR_H1,
2758 (u16) filter[0] | ((u16) filter[1] << 8));
2759 gma_write16(hw, port, GM_MC_ADDR_H2,
2760 (u16) filter[2] | ((u16) filter[3] << 8));
2761 gma_write16(hw, port, GM_MC_ADDR_H3,
2762 (u16) filter[4] | ((u16) filter[5] << 8));
2763 gma_write16(hw, port, GM_MC_ADDR_H4,
2764 (u16) filter[6] | ((u16) filter[7] << 8));
2765
2766 gma_write16(hw, port, GM_RX_CTRL, reg);
2767 }
2768
2769 /* Can have one global because blinking is controlled by
2770 * ethtool and that is always under RTNL mutex
2771 */
2772 static void sky2_led(struct sky2_hw *hw, unsigned port, int on)
2773 {
2774 u16 pg;
2775
2776 switch (hw->chip_id) {
2777 case CHIP_ID_YUKON_XL:
2778 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2779 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2780 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
2781 on ? (PHY_M_LEDC_LOS_CTRL(1) |
2782 PHY_M_LEDC_INIT_CTRL(7) |
2783 PHY_M_LEDC_STA1_CTRL(7) |
2784 PHY_M_LEDC_STA0_CTRL(7))
2785 : 0);
2786
2787 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2788 break;
2789
2790 default:
2791 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
2792 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
2793 on ? PHY_M_LED_MO_DUP(MO_LED_ON) |
2794 PHY_M_LED_MO_10(MO_LED_ON) |
2795 PHY_M_LED_MO_100(MO_LED_ON) |
2796 PHY_M_LED_MO_1000(MO_LED_ON) |
2797 PHY_M_LED_MO_RX(MO_LED_ON)
2798 : PHY_M_LED_MO_DUP(MO_LED_OFF) |
2799 PHY_M_LED_MO_10(MO_LED_OFF) |
2800 PHY_M_LED_MO_100(MO_LED_OFF) |
2801 PHY_M_LED_MO_1000(MO_LED_OFF) |
2802 PHY_M_LED_MO_RX(MO_LED_OFF));
2803
2804 }
2805 }
2806
2807 /* blink LED's for finding board */
2808 static int sky2_phys_id(struct net_device *dev, u32 data)
2809 {
2810 struct sky2_port *sky2 = netdev_priv(dev);
2811 struct sky2_hw *hw = sky2->hw;
2812 unsigned port = sky2->port;
2813 u16 ledctrl, ledover = 0;
2814 long ms;
2815 int interrupted;
2816 int onoff = 1;
2817
2818 if (!data || data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ))
2819 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT);
2820 else
2821 ms = data * 1000;
2822
2823 /* save initial values */
2824 spin_lock_bh(&sky2->phy_lock);
2825 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2826 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2827 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2828 ledctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
2829 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2830 } else {
2831 ledctrl = gm_phy_read(hw, port, PHY_MARV_LED_CTRL);
2832 ledover = gm_phy_read(hw, port, PHY_MARV_LED_OVER);
2833 }
2834
2835 interrupted = 0;
2836 while (!interrupted && ms > 0) {
2837 sky2_led(hw, port, onoff);
2838 onoff = !onoff;
2839
2840 spin_unlock_bh(&sky2->phy_lock);
2841 interrupted = msleep_interruptible(250);
2842 spin_lock_bh(&sky2->phy_lock);
2843
2844 ms -= 250;
2845 }
2846
2847 /* resume regularly scheduled programming */
2848 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2849 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2850 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2851 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ledctrl);
2852 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2853 } else {
2854 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
2855 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
2856 }
2857 spin_unlock_bh(&sky2->phy_lock);
2858
2859 return 0;
2860 }
2861
2862 static void sky2_get_pauseparam(struct net_device *dev,
2863 struct ethtool_pauseparam *ecmd)
2864 {
2865 struct sky2_port *sky2 = netdev_priv(dev);
2866
2867 ecmd->tx_pause = sky2->tx_pause;
2868 ecmd->rx_pause = sky2->rx_pause;
2869 ecmd->autoneg = sky2->autoneg;
2870 }
2871
2872 static int sky2_set_pauseparam(struct net_device *dev,
2873 struct ethtool_pauseparam *ecmd)
2874 {
2875 struct sky2_port *sky2 = netdev_priv(dev);
2876 int err = 0;
2877
2878 sky2->autoneg = ecmd->autoneg;
2879 sky2->tx_pause = ecmd->tx_pause != 0;
2880 sky2->rx_pause = ecmd->rx_pause != 0;
2881
2882 sky2_phy_reinit(sky2);
2883
2884 return err;
2885 }
2886
2887 static int sky2_get_coalesce(struct net_device *dev,
2888 struct ethtool_coalesce *ecmd)
2889 {
2890 struct sky2_port *sky2 = netdev_priv(dev);
2891 struct sky2_hw *hw = sky2->hw;
2892
2893 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
2894 ecmd->tx_coalesce_usecs = 0;
2895 else {
2896 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
2897 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
2898 }
2899 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
2900
2901 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
2902 ecmd->rx_coalesce_usecs = 0;
2903 else {
2904 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
2905 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
2906 }
2907 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
2908
2909 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
2910 ecmd->rx_coalesce_usecs_irq = 0;
2911 else {
2912 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
2913 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
2914 }
2915
2916 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
2917
2918 return 0;
2919 }
2920
2921 /* Note: this affect both ports */
2922 static int sky2_set_coalesce(struct net_device *dev,
2923 struct ethtool_coalesce *ecmd)
2924 {
2925 struct sky2_port *sky2 = netdev_priv(dev);
2926 struct sky2_hw *hw = sky2->hw;
2927 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
2928
2929 if (ecmd->tx_coalesce_usecs > tmax ||
2930 ecmd->rx_coalesce_usecs > tmax ||
2931 ecmd->rx_coalesce_usecs_irq > tmax)
2932 return -EINVAL;
2933
2934 if (ecmd->tx_max_coalesced_frames >= TX_RING_SIZE-1)
2935 return -EINVAL;
2936 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
2937 return -EINVAL;
2938 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
2939 return -EINVAL;
2940
2941 if (ecmd->tx_coalesce_usecs == 0)
2942 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
2943 else {
2944 sky2_write32(hw, STAT_TX_TIMER_INI,
2945 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
2946 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2947 }
2948 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
2949
2950 if (ecmd->rx_coalesce_usecs == 0)
2951 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
2952 else {
2953 sky2_write32(hw, STAT_LEV_TIMER_INI,
2954 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
2955 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2956 }
2957 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
2958
2959 if (ecmd->rx_coalesce_usecs_irq == 0)
2960 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
2961 else {
2962 sky2_write32(hw, STAT_ISR_TIMER_INI,
2963 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
2964 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2965 }
2966 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
2967 return 0;
2968 }
2969
2970 static void sky2_get_ringparam(struct net_device *dev,
2971 struct ethtool_ringparam *ering)
2972 {
2973 struct sky2_port *sky2 = netdev_priv(dev);
2974
2975 ering->rx_max_pending = RX_MAX_PENDING;
2976 ering->rx_mini_max_pending = 0;
2977 ering->rx_jumbo_max_pending = 0;
2978 ering->tx_max_pending = TX_RING_SIZE - 1;
2979
2980 ering->rx_pending = sky2->rx_pending;
2981 ering->rx_mini_pending = 0;
2982 ering->rx_jumbo_pending = 0;
2983 ering->tx_pending = sky2->tx_pending;
2984 }
2985
2986 static int sky2_set_ringparam(struct net_device *dev,
2987 struct ethtool_ringparam *ering)
2988 {
2989 struct sky2_port *sky2 = netdev_priv(dev);
2990 int err = 0;
2991
2992 if (ering->rx_pending > RX_MAX_PENDING ||
2993 ering->rx_pending < 8 ||
2994 ering->tx_pending < MAX_SKB_TX_LE ||
2995 ering->tx_pending > TX_RING_SIZE - 1)
2996 return -EINVAL;
2997
2998 if (netif_running(dev))
2999 sky2_down(dev);
3000
3001 sky2->rx_pending = ering->rx_pending;
3002 sky2->tx_pending = ering->tx_pending;
3003
3004 if (netif_running(dev)) {
3005 err = sky2_up(dev);
3006 if (err)
3007 dev_close(dev);
3008 else
3009 sky2_set_multicast(dev);
3010 }
3011
3012 return err;
3013 }
3014
3015 static int sky2_get_regs_len(struct net_device *dev)
3016 {
3017 return 0x4000;
3018 }
3019
3020 /*
3021 * Returns copy of control register region
3022 * Note: access to the RAM address register set will cause timeouts.
3023 */
3024 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
3025 void *p)
3026 {
3027 const struct sky2_port *sky2 = netdev_priv(dev);
3028 const void __iomem *io = sky2->hw->regs;
3029
3030 BUG_ON(regs->len < B3_RI_WTO_R1);
3031 regs->version = 1;
3032 memset(p, 0, regs->len);
3033
3034 memcpy_fromio(p, io, B3_RAM_ADDR);
3035
3036 memcpy_fromio(p + B3_RI_WTO_R1,
3037 io + B3_RI_WTO_R1,
3038 regs->len - B3_RI_WTO_R1);
3039 }
3040
3041 static struct ethtool_ops sky2_ethtool_ops = {
3042 .get_settings = sky2_get_settings,
3043 .set_settings = sky2_set_settings,
3044 .get_drvinfo = sky2_get_drvinfo,
3045 .get_msglevel = sky2_get_msglevel,
3046 .set_msglevel = sky2_set_msglevel,
3047 .nway_reset = sky2_nway_reset,
3048 .get_regs_len = sky2_get_regs_len,
3049 .get_regs = sky2_get_regs,
3050 .get_link = ethtool_op_get_link,
3051 .get_sg = ethtool_op_get_sg,
3052 .set_sg = ethtool_op_set_sg,
3053 .get_tx_csum = ethtool_op_get_tx_csum,
3054 .set_tx_csum = ethtool_op_set_tx_csum,
3055 .get_tso = ethtool_op_get_tso,
3056 .set_tso = ethtool_op_set_tso,
3057 .get_rx_csum = sky2_get_rx_csum,
3058 .set_rx_csum = sky2_set_rx_csum,
3059 .get_strings = sky2_get_strings,
3060 .get_coalesce = sky2_get_coalesce,
3061 .set_coalesce = sky2_set_coalesce,
3062 .get_ringparam = sky2_get_ringparam,
3063 .set_ringparam = sky2_set_ringparam,
3064 .get_pauseparam = sky2_get_pauseparam,
3065 .set_pauseparam = sky2_set_pauseparam,
3066 .phys_id = sky2_phys_id,
3067 .get_stats_count = sky2_get_stats_count,
3068 .get_ethtool_stats = sky2_get_ethtool_stats,
3069 .get_perm_addr = ethtool_op_get_perm_addr,
3070 };
3071
3072 /* Initialize network device */
3073 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
3074 unsigned port, int highmem)
3075 {
3076 struct sky2_port *sky2;
3077 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
3078
3079 if (!dev) {
3080 printk(KERN_ERR "sky2 etherdev alloc failed");
3081 return NULL;
3082 }
3083
3084 SET_MODULE_OWNER(dev);
3085 SET_NETDEV_DEV(dev, &hw->pdev->dev);
3086 dev->irq = hw->pdev->irq;
3087 dev->open = sky2_up;
3088 dev->stop = sky2_down;
3089 dev->do_ioctl = sky2_ioctl;
3090 dev->hard_start_xmit = sky2_xmit_frame;
3091 dev->get_stats = sky2_get_stats;
3092 dev->set_multicast_list = sky2_set_multicast;
3093 dev->set_mac_address = sky2_set_mac_address;
3094 dev->change_mtu = sky2_change_mtu;
3095 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
3096 dev->tx_timeout = sky2_tx_timeout;
3097 dev->watchdog_timeo = TX_WATCHDOG;
3098 if (port == 0)
3099 dev->poll = sky2_poll;
3100 dev->weight = NAPI_WEIGHT;
3101 #ifdef CONFIG_NET_POLL_CONTROLLER
3102 dev->poll_controller = sky2_netpoll;
3103 #endif
3104
3105 sky2 = netdev_priv(dev);
3106 sky2->netdev = dev;
3107 sky2->hw = hw;
3108 sky2->msg_enable = netif_msg_init(debug, default_msg);
3109
3110 spin_lock_init(&sky2->tx_lock);
3111 /* Auto speed and flow control */
3112 sky2->autoneg = AUTONEG_ENABLE;
3113 sky2->tx_pause = 1;
3114 sky2->rx_pause = 1;
3115 sky2->duplex = -1;
3116 sky2->speed = -1;
3117 sky2->advertising = sky2_supported_modes(hw);
3118 sky2->rx_csum = 1;
3119
3120 spin_lock_init(&sky2->phy_lock);
3121 sky2->tx_pending = TX_DEF_PENDING;
3122 sky2->rx_pending = RX_DEF_PENDING;
3123 sky2->rx_bufsize = sky2_buf_size(ETH_DATA_LEN);
3124
3125 hw->dev[port] = dev;
3126
3127 sky2->port = port;
3128
3129 dev->features |= NETIF_F_LLTX;
3130 if (hw->chip_id != CHIP_ID_YUKON_EC_U)
3131 dev->features |= NETIF_F_TSO;
3132 if (highmem)
3133 dev->features |= NETIF_F_HIGHDMA;
3134 dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
3135
3136 #ifdef SKY2_VLAN_TAG_USED
3137 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
3138 dev->vlan_rx_register = sky2_vlan_rx_register;
3139 dev->vlan_rx_kill_vid = sky2_vlan_rx_kill_vid;
3140 #endif
3141
3142 /* read the mac address */
3143 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
3144 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
3145
3146 /* device is off until link detection */
3147 netif_carrier_off(dev);
3148 netif_stop_queue(dev);
3149
3150 return dev;
3151 }
3152
3153 static void __devinit sky2_show_addr(struct net_device *dev)
3154 {
3155 const struct sky2_port *sky2 = netdev_priv(dev);
3156
3157 if (netif_msg_probe(sky2))
3158 printk(KERN_INFO PFX "%s: addr %02x:%02x:%02x:%02x:%02x:%02x\n",
3159 dev->name,
3160 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
3161 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
3162 }
3163
3164 /* Handle software interrupt used during MSI test */
3165 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id,
3166 struct pt_regs *regs)
3167 {
3168 struct sky2_hw *hw = dev_id;
3169 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
3170
3171 if (status == 0)
3172 return IRQ_NONE;
3173
3174 if (status & Y2_IS_IRQ_SW) {
3175 hw->msi_detected = 1;
3176 wake_up(&hw->msi_wait);
3177 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3178 }
3179 sky2_write32(hw, B0_Y2_SP_ICR, 2);
3180
3181 return IRQ_HANDLED;
3182 }
3183
3184 /* Test interrupt path by forcing a a software IRQ */
3185 static int __devinit sky2_test_msi(struct sky2_hw *hw)
3186 {
3187 struct pci_dev *pdev = hw->pdev;
3188 int err;
3189
3190 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
3191
3192 err = request_irq(pdev->irq, sky2_test_intr, SA_SHIRQ, DRV_NAME, hw);
3193 if (err) {
3194 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3195 pci_name(pdev), pdev->irq);
3196 return err;
3197 }
3198
3199 init_waitqueue_head (&hw->msi_wait);
3200
3201 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
3202 wmb();
3203
3204 wait_event_timeout(hw->msi_wait, hw->msi_detected, HZ/10);
3205
3206 if (!hw->msi_detected) {
3207 /* MSI test failed, go back to INTx mode */
3208 printk(KERN_WARNING PFX "%s: No interrupt was generated using MSI, "
3209 "switching to INTx mode. Please report this failure to "
3210 "the PCI maintainer and include system chipset information.\n",
3211 pci_name(pdev));
3212
3213 err = -EOPNOTSUPP;
3214 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3215 }
3216
3217 sky2_write32(hw, B0_IMSK, 0);
3218
3219 free_irq(pdev->irq, hw);
3220
3221 return err;
3222 }
3223
3224 static int __devinit sky2_probe(struct pci_dev *pdev,
3225 const struct pci_device_id *ent)
3226 {
3227 struct net_device *dev, *dev1 = NULL;
3228 struct sky2_hw *hw;
3229 int err, pm_cap, using_dac = 0;
3230
3231 err = pci_enable_device(pdev);
3232 if (err) {
3233 printk(KERN_ERR PFX "%s cannot enable PCI device\n",
3234 pci_name(pdev));
3235 goto err_out;
3236 }
3237
3238 err = pci_request_regions(pdev, DRV_NAME);
3239 if (err) {
3240 printk(KERN_ERR PFX "%s cannot obtain PCI resources\n",
3241 pci_name(pdev));
3242 goto err_out;
3243 }
3244
3245 pci_set_master(pdev);
3246
3247 /* Find power-management capability. */
3248 pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
3249 if (pm_cap == 0) {
3250 printk(KERN_ERR PFX "Cannot find PowerManagement capability, "
3251 "aborting.\n");
3252 err = -EIO;
3253 goto err_out_free_regions;
3254 }
3255
3256 if (sizeof(dma_addr_t) > sizeof(u32) &&
3257 !(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
3258 using_dac = 1;
3259 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3260 if (err < 0) {
3261 printk(KERN_ERR PFX "%s unable to obtain 64 bit DMA "
3262 "for consistent allocations\n", pci_name(pdev));
3263 goto err_out_free_regions;
3264 }
3265
3266 } else {
3267 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
3268 if (err) {
3269 printk(KERN_ERR PFX "%s no usable DMA configuration\n",
3270 pci_name(pdev));
3271 goto err_out_free_regions;
3272 }
3273 }
3274
3275 err = -ENOMEM;
3276 hw = kzalloc(sizeof(*hw), GFP_KERNEL);
3277 if (!hw) {
3278 printk(KERN_ERR PFX "%s: cannot allocate hardware struct\n",
3279 pci_name(pdev));
3280 goto err_out_free_regions;
3281 }
3282
3283 hw->pdev = pdev;
3284
3285 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
3286 if (!hw->regs) {
3287 printk(KERN_ERR PFX "%s: cannot map device registers\n",
3288 pci_name(pdev));
3289 goto err_out_free_hw;
3290 }
3291 hw->pm_cap = pm_cap;
3292
3293 #ifdef __BIG_ENDIAN
3294 /* byte swap descriptors in hardware */
3295 {
3296 u32 reg;
3297
3298 reg = sky2_pci_read32(hw, PCI_DEV_REG2);
3299 reg |= PCI_REV_DESC;
3300 sky2_pci_write32(hw, PCI_DEV_REG2, reg);
3301 }
3302 #endif
3303
3304 /* ring for status responses */
3305 hw->st_le = pci_alloc_consistent(hw->pdev, STATUS_LE_BYTES,
3306 &hw->st_dma);
3307 if (!hw->st_le)
3308 goto err_out_iounmap;
3309
3310 err = sky2_reset(hw);
3311 if (err)
3312 goto err_out_iounmap;
3313
3314 printk(KERN_INFO PFX "v%s addr 0x%lx irq %d Yukon-%s (0x%x) rev %d\n",
3315 DRV_VERSION, pci_resource_start(pdev, 0), pdev->irq,
3316 yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
3317 hw->chip_id, hw->chip_rev);
3318
3319 dev = sky2_init_netdev(hw, 0, using_dac);
3320 if (!dev)
3321 goto err_out_free_pci;
3322
3323 err = register_netdev(dev);
3324 if (err) {
3325 printk(KERN_ERR PFX "%s: cannot register net device\n",
3326 pci_name(pdev));
3327 goto err_out_free_netdev;
3328 }
3329
3330 sky2_show_addr(dev);
3331
3332 if (hw->ports > 1 && (dev1 = sky2_init_netdev(hw, 1, using_dac))) {
3333 if (register_netdev(dev1) == 0)
3334 sky2_show_addr(dev1);
3335 else {
3336 /* Failure to register second port need not be fatal */
3337 printk(KERN_WARNING PFX
3338 "register of second port failed\n");
3339 hw->dev[1] = NULL;
3340 free_netdev(dev1);
3341 }
3342 }
3343
3344 if (!disable_msi && pci_enable_msi(pdev) == 0) {
3345 err = sky2_test_msi(hw);
3346 if (err == -EOPNOTSUPP)
3347 pci_disable_msi(pdev);
3348 else if (err)
3349 goto err_out_unregister;
3350 }
3351
3352 err = request_irq(pdev->irq, sky2_intr, SA_SHIRQ, DRV_NAME, hw);
3353 if (err) {
3354 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3355 pci_name(pdev), pdev->irq);
3356 goto err_out_unregister;
3357 }
3358
3359 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3360
3361 setup_timer(&hw->idle_timer, sky2_idle, (unsigned long) hw);
3362 sky2_idle_start(hw);
3363
3364 pci_set_drvdata(pdev, hw);
3365
3366 return 0;
3367
3368 err_out_unregister:
3369 pci_disable_msi(pdev);
3370 if (dev1) {
3371 unregister_netdev(dev1);
3372 free_netdev(dev1);
3373 }
3374 unregister_netdev(dev);
3375 err_out_free_netdev:
3376 free_netdev(dev);
3377 err_out_free_pci:
3378 sky2_write8(hw, B0_CTST, CS_RST_SET);
3379 pci_free_consistent(hw->pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3380 err_out_iounmap:
3381 iounmap(hw->regs);
3382 err_out_free_hw:
3383 kfree(hw);
3384 err_out_free_regions:
3385 pci_release_regions(pdev);
3386 pci_disable_device(pdev);
3387 err_out:
3388 return err;
3389 }
3390
3391 static void __devexit sky2_remove(struct pci_dev *pdev)
3392 {
3393 struct sky2_hw *hw = pci_get_drvdata(pdev);
3394 struct net_device *dev0, *dev1;
3395
3396 if (!hw)
3397 return;
3398
3399 del_timer_sync(&hw->idle_timer);
3400
3401 sky2_write32(hw, B0_IMSK, 0);
3402 synchronize_irq(hw->pdev->irq);
3403
3404 dev0 = hw->dev[0];
3405 dev1 = hw->dev[1];
3406 if (dev1)
3407 unregister_netdev(dev1);
3408 unregister_netdev(dev0);
3409
3410 sky2_set_power_state(hw, PCI_D3hot);
3411 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
3412 sky2_write8(hw, B0_CTST, CS_RST_SET);
3413 sky2_read8(hw, B0_CTST);
3414
3415 free_irq(pdev->irq, hw);
3416 pci_disable_msi(pdev);
3417 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3418 pci_release_regions(pdev);
3419 pci_disable_device(pdev);
3420
3421 if (dev1)
3422 free_netdev(dev1);
3423 free_netdev(dev0);
3424 iounmap(hw->regs);
3425 kfree(hw);
3426
3427 pci_set_drvdata(pdev, NULL);
3428 }
3429
3430 #ifdef CONFIG_PM
3431 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
3432 {
3433 struct sky2_hw *hw = pci_get_drvdata(pdev);
3434 int i;
3435 pci_power_t pstate = pci_choose_state(pdev, state);
3436
3437 if (!(pstate == PCI_D3hot || pstate == PCI_D3cold))
3438 return -EINVAL;
3439
3440 del_timer_sync(&hw->idle_timer);
3441
3442 for (i = 0; i < hw->ports; i++) {
3443 struct net_device *dev = hw->dev[i];
3444
3445 if (dev) {
3446 if (!netif_running(dev))
3447 continue;
3448
3449 sky2_down(dev);
3450 netif_device_detach(dev);
3451 netif_poll_disable(dev);
3452 }
3453 }
3454
3455 sky2_write32(hw, B0_IMSK, 0);
3456 pci_save_state(pdev);
3457 sky2_set_power_state(hw, pstate);
3458 return 0;
3459 }
3460
3461 static int sky2_resume(struct pci_dev *pdev)
3462 {
3463 struct sky2_hw *hw = pci_get_drvdata(pdev);
3464 int i, err;
3465
3466 pci_restore_state(pdev);
3467 pci_enable_wake(pdev, PCI_D0, 0);
3468 sky2_set_power_state(hw, PCI_D0);
3469
3470 err = sky2_reset(hw);
3471 if (err)
3472 goto out;
3473
3474 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3475
3476 for (i = 0; i < hw->ports; i++) {
3477 struct net_device *dev = hw->dev[i];
3478 if (dev && netif_running(dev)) {
3479 netif_device_attach(dev);
3480 netif_poll_enable(dev);
3481
3482 err = sky2_up(dev);
3483 if (err) {
3484 printk(KERN_ERR PFX "%s: could not up: %d\n",
3485 dev->name, err);
3486 dev_close(dev);
3487 goto out;
3488 }
3489 }
3490 }
3491
3492 sky2_idle_start(hw);
3493 out:
3494 return err;
3495 }
3496 #endif
3497
3498 static struct pci_driver sky2_driver = {
3499 .name = DRV_NAME,
3500 .id_table = sky2_id_table,
3501 .probe = sky2_probe,
3502 .remove = __devexit_p(sky2_remove),
3503 #ifdef CONFIG_PM
3504 .suspend = sky2_suspend,
3505 .resume = sky2_resume,
3506 #endif
3507 };
3508
3509 static int __init sky2_init_module(void)
3510 {
3511 return pci_register_driver(&sky2_driver);
3512 }
3513
3514 static void __exit sky2_cleanup_module(void)
3515 {
3516 pci_unregister_driver(&sky2_driver);
3517 }
3518
3519 module_init(sky2_init_module);
3520 module_exit(sky2_cleanup_module);
3521
3522 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
3523 MODULE_AUTHOR("Stephen Hemminger <shemminger@osdl.org>");
3524 MODULE_LICENSE("GPL");
3525 MODULE_VERSION(DRV_VERSION);
USB Experimental Work