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[deliverable/linux.git] / drivers / net / sky2.c
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 "0.15"
55 #define PFX DRV_NAME " "
56
57 /*
58 * The Yukon II chipset takes 64 bit command blocks (called list elements)
59 * that are organized into three (receive, transmit, status) different rings
60 * similar to Tigon3. A transmit can require several elements;
61 * a receive requires one (or two if using 64 bit dma).
62 */
63
64 #define RX_LE_SIZE 512
65 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
66 #define RX_MAX_PENDING (RX_LE_SIZE/2 - 2)
67 #define RX_DEF_PENDING RX_MAX_PENDING
68 #define RX_SKB_ALIGN 8
69
70 #define TX_RING_SIZE 512
71 #define TX_DEF_PENDING (TX_RING_SIZE - 1)
72 #define TX_MIN_PENDING 64
73 #define MAX_SKB_TX_LE (4 + (sizeof(dma_addr_t)/sizeof(u32))*MAX_SKB_FRAGS)
74
75 #define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
76 #define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
77 #define ETH_JUMBO_MTU 9000
78 #define TX_WATCHDOG (5 * HZ)
79 #define NAPI_WEIGHT 64
80 #define PHY_RETRIES 1000
81
82 static const u32 default_msg =
83 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
84 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
85 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
86
87 static int debug = -1; /* defaults above */
88 module_param(debug, int, 0);
89 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
90
91 static int copybreak __read_mostly = 256;
92 module_param(copybreak, int, 0);
93 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
94
95 static int disable_msi = 0;
96 module_param(disable_msi, int, 0);
97 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
98
99 static const struct pci_device_id sky2_id_table[] = {
100 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) },
101 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) },
102 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) },
103 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b01) },
104 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) },
105 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) },
106 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) },
107 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) },
108 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) },
109 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) },
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) },
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) },
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) },
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) },
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) },
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) },
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) },
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) },
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) },
119 { 0 }
120 };
121
122 MODULE_DEVICE_TABLE(pci, sky2_id_table);
123
124 /* Avoid conditionals by using array */
125 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
126 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
127
128 /* This driver supports yukon2 chipset only */
129 static const char *yukon2_name[] = {
130 "XL", /* 0xb3 */
131 "EC Ultra", /* 0xb4 */
132 "UNKNOWN", /* 0xb5 */
133 "EC", /* 0xb6 */
134 "FE", /* 0xb7 */
135 };
136
137 /* Access to external PHY */
138 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
139 {
140 int i;
141
142 gma_write16(hw, port, GM_SMI_DATA, val);
143 gma_write16(hw, port, GM_SMI_CTRL,
144 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
145
146 for (i = 0; i < PHY_RETRIES; i++) {
147 if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
148 return 0;
149 udelay(1);
150 }
151
152 printk(KERN_WARNING PFX "%s: phy write timeout\n", hw->dev[port]->name);
153 return -ETIMEDOUT;
154 }
155
156 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
157 {
158 int i;
159
160 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
161 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
162
163 for (i = 0; i < PHY_RETRIES; i++) {
164 if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL) {
165 *val = gma_read16(hw, port, GM_SMI_DATA);
166 return 0;
167 }
168
169 udelay(1);
170 }
171
172 return -ETIMEDOUT;
173 }
174
175 static u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
176 {
177 u16 v;
178
179 if (__gm_phy_read(hw, port, reg, &v) != 0)
180 printk(KERN_WARNING PFX "%s: phy read timeout\n", hw->dev[port]->name);
181 return v;
182 }
183
184 static int sky2_set_power_state(struct sky2_hw *hw, pci_power_t state)
185 {
186 u16 power_control;
187 u32 reg1;
188 int vaux;
189 int ret = 0;
190
191 pr_debug("sky2_set_power_state %d\n", state);
192 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
193
194 power_control = sky2_pci_read16(hw, hw->pm_cap + PCI_PM_PMC);
195 vaux = (sky2_read16(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
196 (power_control & PCI_PM_CAP_PME_D3cold);
197
198 power_control = sky2_pci_read16(hw, hw->pm_cap + PCI_PM_CTRL);
199
200 power_control |= PCI_PM_CTRL_PME_STATUS;
201 power_control &= ~(PCI_PM_CTRL_STATE_MASK);
202
203 switch (state) {
204 case PCI_D0:
205 /* switch power to VCC (WA for VAUX problem) */
206 sky2_write8(hw, B0_POWER_CTRL,
207 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
208
209 /* disable Core Clock Division, */
210 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
211
212 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
213 /* enable bits are inverted */
214 sky2_write8(hw, B2_Y2_CLK_GATE,
215 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
216 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
217 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
218 else
219 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
220
221 /* Turn off phy power saving */
222 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
223 reg1 &= ~(PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
224
225 /* looks like this XL is back asswards .. */
226 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1) {
227 reg1 |= PCI_Y2_PHY1_COMA;
228 if (hw->ports > 1)
229 reg1 |= PCI_Y2_PHY2_COMA;
230 }
231
232 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
233 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
234 reg1 = sky2_pci_read32(hw, PCI_DEV_REG4);
235 reg1 &= P_ASPM_CONTROL_MSK;
236 sky2_pci_write32(hw, PCI_DEV_REG4, reg1);
237 sky2_pci_write32(hw, PCI_DEV_REG5, 0);
238 }
239
240 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
241
242 break;
243
244 case PCI_D3hot:
245 case PCI_D3cold:
246 /* Turn on phy power saving */
247 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
248 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
249 reg1 &= ~(PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
250 else
251 reg1 |= (PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
252 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
253
254 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
255 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
256 else
257 /* enable bits are inverted */
258 sky2_write8(hw, B2_Y2_CLK_GATE,
259 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
260 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
261 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
262
263 /* switch power to VAUX */
264 if (vaux && state != PCI_D3cold)
265 sky2_write8(hw, B0_POWER_CTRL,
266 (PC_VAUX_ENA | PC_VCC_ENA |
267 PC_VAUX_ON | PC_VCC_OFF));
268 break;
269 default:
270 printk(KERN_ERR PFX "Unknown power state %d\n", state);
271 ret = -1;
272 }
273
274 sky2_pci_write16(hw, hw->pm_cap + PCI_PM_CTRL, power_control);
275 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
276 return ret;
277 }
278
279 static void sky2_phy_reset(struct sky2_hw *hw, unsigned port)
280 {
281 u16 reg;
282
283 /* disable all GMAC IRQ's */
284 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
285 /* disable PHY IRQs */
286 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
287
288 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
289 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
290 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
291 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
292
293 reg = gma_read16(hw, port, GM_RX_CTRL);
294 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
295 gma_write16(hw, port, GM_RX_CTRL, reg);
296 }
297
298 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
299 {
300 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
301 u16 ctrl, ct1000, adv, pg, ledctrl, ledover;
302
303 if (sky2->autoneg == AUTONEG_ENABLE && hw->chip_id != CHIP_ID_YUKON_XL) {
304 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
305
306 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
307 PHY_M_EC_MAC_S_MSK);
308 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
309
310 if (hw->chip_id == CHIP_ID_YUKON_EC)
311 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
312 else
313 ectrl |= PHY_M_EC_M_DSC(2) | PHY_M_EC_S_DSC(3);
314
315 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
316 }
317
318 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
319 if (hw->copper) {
320 if (hw->chip_id == CHIP_ID_YUKON_FE) {
321 /* enable automatic crossover */
322 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
323 } else {
324 /* disable energy detect */
325 ctrl &= ~PHY_M_PC_EN_DET_MSK;
326
327 /* enable automatic crossover */
328 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
329
330 if (sky2->autoneg == AUTONEG_ENABLE &&
331 hw->chip_id == CHIP_ID_YUKON_XL) {
332 ctrl &= ~PHY_M_PC_DSC_MSK;
333 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
334 }
335 }
336 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
337 } else {
338 /* workaround for deviation #4.88 (CRC errors) */
339 /* disable Automatic Crossover */
340
341 ctrl &= ~PHY_M_PC_MDIX_MSK;
342 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
343
344 if (hw->chip_id == CHIP_ID_YUKON_XL) {
345 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
346 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
347 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
348 ctrl &= ~PHY_M_MAC_MD_MSK;
349 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
350 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
351
352 /* select page 1 to access Fiber registers */
353 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
354 }
355 }
356
357 ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
358 if (sky2->autoneg == AUTONEG_DISABLE)
359 ctrl &= ~PHY_CT_ANE;
360 else
361 ctrl |= PHY_CT_ANE;
362
363 ctrl |= PHY_CT_RESET;
364 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
365
366 ctrl = 0;
367 ct1000 = 0;
368 adv = PHY_AN_CSMA;
369
370 if (sky2->autoneg == AUTONEG_ENABLE) {
371 if (hw->copper) {
372 if (sky2->advertising & ADVERTISED_1000baseT_Full)
373 ct1000 |= PHY_M_1000C_AFD;
374 if (sky2->advertising & ADVERTISED_1000baseT_Half)
375 ct1000 |= PHY_M_1000C_AHD;
376 if (sky2->advertising & ADVERTISED_100baseT_Full)
377 adv |= PHY_M_AN_100_FD;
378 if (sky2->advertising & ADVERTISED_100baseT_Half)
379 adv |= PHY_M_AN_100_HD;
380 if (sky2->advertising & ADVERTISED_10baseT_Full)
381 adv |= PHY_M_AN_10_FD;
382 if (sky2->advertising & ADVERTISED_10baseT_Half)
383 adv |= PHY_M_AN_10_HD;
384 } else /* special defines for FIBER (88E1011S only) */
385 adv |= PHY_M_AN_1000X_AHD | PHY_M_AN_1000X_AFD;
386
387 /* Set Flow-control capabilities */
388 if (sky2->tx_pause && sky2->rx_pause)
389 adv |= PHY_AN_PAUSE_CAP; /* symmetric */
390 else if (sky2->rx_pause && !sky2->tx_pause)
391 adv |= PHY_AN_PAUSE_ASYM | PHY_AN_PAUSE_CAP;
392 else if (!sky2->rx_pause && sky2->tx_pause)
393 adv |= PHY_AN_PAUSE_ASYM; /* local */
394
395 /* Restart Auto-negotiation */
396 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
397 } else {
398 /* forced speed/duplex settings */
399 ct1000 = PHY_M_1000C_MSE;
400
401 if (sky2->duplex == DUPLEX_FULL)
402 ctrl |= PHY_CT_DUP_MD;
403
404 switch (sky2->speed) {
405 case SPEED_1000:
406 ctrl |= PHY_CT_SP1000;
407 break;
408 case SPEED_100:
409 ctrl |= PHY_CT_SP100;
410 break;
411 }
412
413 ctrl |= PHY_CT_RESET;
414 }
415
416 if (hw->chip_id != CHIP_ID_YUKON_FE)
417 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
418
419 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
420 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
421
422 /* Setup Phy LED's */
423 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
424 ledover = 0;
425
426 switch (hw->chip_id) {
427 case CHIP_ID_YUKON_FE:
428 /* on 88E3082 these bits are at 11..9 (shifted left) */
429 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
430
431 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
432
433 /* delete ACT LED control bits */
434 ctrl &= ~PHY_M_FELP_LED1_MSK;
435 /* change ACT LED control to blink mode */
436 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
437 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
438 break;
439
440 case CHIP_ID_YUKON_XL:
441 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
442
443 /* select page 3 to access LED control register */
444 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
445
446 /* set LED Function Control register */
447 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
448 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
449 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
450 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
451
452 /* set Polarity Control register */
453 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
454 (PHY_M_POLC_LS1_P_MIX(4) |
455 PHY_M_POLC_IS0_P_MIX(4) |
456 PHY_M_POLC_LOS_CTRL(2) |
457 PHY_M_POLC_INIT_CTRL(2) |
458 PHY_M_POLC_STA1_CTRL(2) |
459 PHY_M_POLC_STA0_CTRL(2)));
460
461 /* restore page register */
462 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
463 break;
464
465 default:
466 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
467 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
468 /* turn off the Rx LED (LED_RX) */
469 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
470 }
471
472 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev >= 2) {
473 /* apply fixes in PHY AFE */
474 gm_phy_write(hw, port, 22, 255);
475 /* increase differential signal amplitude in 10BASE-T */
476 gm_phy_write(hw, port, 24, 0xaa99);
477 gm_phy_write(hw, port, 23, 0x2011);
478
479 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
480 gm_phy_write(hw, port, 24, 0xa204);
481 gm_phy_write(hw, port, 23, 0x2002);
482
483 /* set page register to 0 */
484 gm_phy_write(hw, port, 22, 0);
485 } else {
486 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
487
488 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
489 /* turn on 100 Mbps LED (LED_LINK100) */
490 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
491 }
492
493 if (ledover)
494 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
495
496 }
497 /* Enable phy interrupt on auto-negotiation complete (or link up) */
498 if (sky2->autoneg == AUTONEG_ENABLE)
499 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
500 else
501 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
502 }
503
504 /* Force a renegotiation */
505 static void sky2_phy_reinit(struct sky2_port *sky2)
506 {
507 spin_lock_bh(&sky2->phy_lock);
508 sky2_phy_init(sky2->hw, sky2->port);
509 spin_unlock_bh(&sky2->phy_lock);
510 }
511
512 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
513 {
514 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
515 u16 reg;
516 int i;
517 const u8 *addr = hw->dev[port]->dev_addr;
518
519 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
520 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR|GPC_ENA_PAUSE);
521
522 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
523
524 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
525 /* WA DEV_472 -- looks like crossed wires on port 2 */
526 /* clear GMAC 1 Control reset */
527 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
528 do {
529 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
530 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
531 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
532 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
533 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
534 }
535
536 if (sky2->autoneg == AUTONEG_DISABLE) {
537 reg = gma_read16(hw, port, GM_GP_CTRL);
538 reg |= GM_GPCR_AU_ALL_DIS;
539 gma_write16(hw, port, GM_GP_CTRL, reg);
540 gma_read16(hw, port, GM_GP_CTRL);
541
542 switch (sky2->speed) {
543 case SPEED_1000:
544 reg &= ~GM_GPCR_SPEED_100;
545 reg |= GM_GPCR_SPEED_1000;
546 break;
547 case SPEED_100:
548 reg &= ~GM_GPCR_SPEED_1000;
549 reg |= GM_GPCR_SPEED_100;
550 break;
551 case SPEED_10:
552 reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
553 break;
554 }
555
556 if (sky2->duplex == DUPLEX_FULL)
557 reg |= GM_GPCR_DUP_FULL;
558 } else
559 reg = GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100 | GM_GPCR_DUP_FULL;
560
561 if (!sky2->tx_pause && !sky2->rx_pause) {
562 sky2_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
563 reg |=
564 GM_GPCR_FC_TX_DIS | GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
565 } else if (sky2->tx_pause && !sky2->rx_pause) {
566 /* disable Rx flow-control */
567 reg |= GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
568 }
569
570 gma_write16(hw, port, GM_GP_CTRL, reg);
571
572 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
573
574 spin_lock_bh(&sky2->phy_lock);
575 sky2_phy_init(hw, port);
576 spin_unlock_bh(&sky2->phy_lock);
577
578 /* MIB clear */
579 reg = gma_read16(hw, port, GM_PHY_ADDR);
580 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
581
582 for (i = 0; i < GM_MIB_CNT_SIZE; i++)
583 gma_read16(hw, port, GM_MIB_CNT_BASE + 8 * i);
584 gma_write16(hw, port, GM_PHY_ADDR, reg);
585
586 /* transmit control */
587 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
588
589 /* receive control reg: unicast + multicast + no FCS */
590 gma_write16(hw, port, GM_RX_CTRL,
591 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
592
593 /* transmit flow control */
594 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
595
596 /* transmit parameter */
597 gma_write16(hw, port, GM_TX_PARAM,
598 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
599 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
600 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
601 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
602
603 /* serial mode register */
604 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
605 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
606
607 if (hw->dev[port]->mtu > ETH_DATA_LEN)
608 reg |= GM_SMOD_JUMBO_ENA;
609
610 gma_write16(hw, port, GM_SERIAL_MODE, reg);
611
612 /* virtual address for data */
613 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
614
615 /* physical address: used for pause frames */
616 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
617
618 /* ignore counter overflows */
619 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
620 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
621 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
622
623 /* Configure Rx MAC FIFO */
624 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
625 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
626 GMF_OPER_ON | GMF_RX_F_FL_ON);
627
628 /* Flush Rx MAC FIFO on any flow control or error */
629 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
630
631 /* Set threshold to 0xa (64 bytes)
632 * ASF disabled so no need to do WA dev #4.30
633 */
634 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF);
635
636 /* Configure Tx MAC FIFO */
637 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
638 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
639
640 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
641 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
642 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
643 if (hw->dev[port]->mtu > ETH_DATA_LEN) {
644 /* set Tx GMAC FIFO Almost Empty Threshold */
645 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR), 0x180);
646 /* Disable Store & Forward mode for TX */
647 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
648 }
649 }
650
651 }
652
653 /* Assign Ram Buffer allocation.
654 * start and end are in units of 4k bytes
655 * ram registers are in units of 64bit words
656 */
657 static void sky2_ramset(struct sky2_hw *hw, u16 q, u8 startk, u8 endk)
658 {
659 u32 start, end;
660
661 start = startk * 4096/8;
662 end = (endk * 4096/8) - 1;
663
664 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
665 sky2_write32(hw, RB_ADDR(q, RB_START), start);
666 sky2_write32(hw, RB_ADDR(q, RB_END), end);
667 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
668 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
669
670 if (q == Q_R1 || q == Q_R2) {
671 u32 space = (endk - startk) * 4096/8;
672 u32 tp = space - space/4;
673
674 /* On receive queue's set the thresholds
675 * give receiver priority when > 3/4 full
676 * send pause when down to 2K
677 */
678 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
679 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
680
681 tp = space - 2048/8;
682 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
683 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
684 } else {
685 /* Enable store & forward on Tx queue's because
686 * Tx FIFO is only 1K on Yukon
687 */
688 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
689 }
690
691 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
692 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
693 }
694
695 /* Setup Bus Memory Interface */
696 static void sky2_qset(struct sky2_hw *hw, u16 q)
697 {
698 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
699 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
700 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
701 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
702 }
703
704 /* Setup prefetch unit registers. This is the interface between
705 * hardware and driver list elements
706 */
707 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
708 u64 addr, u32 last)
709 {
710 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
711 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
712 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
713 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
714 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
715 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
716
717 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
718 }
719
720 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
721 {
722 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
723
724 sky2->tx_prod = (sky2->tx_prod + 1) % TX_RING_SIZE;
725 return le;
726 }
727
728 /* Update chip's next pointer */
729 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
730 {
731 wmb();
732 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
733 mmiowb();
734 }
735
736
737 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
738 {
739 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
740 sky2->rx_put = (sky2->rx_put + 1) % RX_LE_SIZE;
741 return le;
742 }
743
744 /* Return high part of DMA address (could be 32 or 64 bit) */
745 static inline u32 high32(dma_addr_t a)
746 {
747 return sizeof(a) > sizeof(u32) ? (a >> 16) >> 16 : 0;
748 }
749
750 /* Build description to hardware about buffer */
751 static void sky2_rx_add(struct sky2_port *sky2, dma_addr_t map)
752 {
753 struct sky2_rx_le *le;
754 u32 hi = high32(map);
755 u16 len = sky2->rx_bufsize;
756
757 if (sky2->rx_addr64 != hi) {
758 le = sky2_next_rx(sky2);
759 le->addr = cpu_to_le32(hi);
760 le->ctrl = 0;
761 le->opcode = OP_ADDR64 | HW_OWNER;
762 sky2->rx_addr64 = high32(map + len);
763 }
764
765 le = sky2_next_rx(sky2);
766 le->addr = cpu_to_le32((u32) map);
767 le->length = cpu_to_le16(len);
768 le->ctrl = 0;
769 le->opcode = OP_PACKET | HW_OWNER;
770 }
771
772
773 /* Tell chip where to start receive checksum.
774 * Actually has two checksums, but set both same to avoid possible byte
775 * order problems.
776 */
777 static void rx_set_checksum(struct sky2_port *sky2)
778 {
779 struct sky2_rx_le *le;
780
781 le = sky2_next_rx(sky2);
782 le->addr = (ETH_HLEN << 16) | ETH_HLEN;
783 le->ctrl = 0;
784 le->opcode = OP_TCPSTART | HW_OWNER;
785
786 sky2_write32(sky2->hw,
787 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
788 sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
789
790 }
791
792 /*
793 * The RX Stop command will not work for Yukon-2 if the BMU does not
794 * reach the end of packet and since we can't make sure that we have
795 * incoming data, we must reset the BMU while it is not doing a DMA
796 * transfer. Since it is possible that the RX path is still active,
797 * the RX RAM buffer will be stopped first, so any possible incoming
798 * data will not trigger a DMA. After the RAM buffer is stopped, the
799 * BMU is polled until any DMA in progress is ended and only then it
800 * will be reset.
801 */
802 static void sky2_rx_stop(struct sky2_port *sky2)
803 {
804 struct sky2_hw *hw = sky2->hw;
805 unsigned rxq = rxqaddr[sky2->port];
806 int i;
807
808 /* disable the RAM Buffer receive queue */
809 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
810
811 for (i = 0; i < 0xffff; i++)
812 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
813 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
814 goto stopped;
815
816 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
817 sky2->netdev->name);
818 stopped:
819 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
820
821 /* reset the Rx prefetch unit */
822 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
823 }
824
825 /* Clean out receive buffer area, assumes receiver hardware stopped */
826 static void sky2_rx_clean(struct sky2_port *sky2)
827 {
828 unsigned i;
829
830 memset(sky2->rx_le, 0, RX_LE_BYTES);
831 for (i = 0; i < sky2->rx_pending; i++) {
832 struct ring_info *re = sky2->rx_ring + i;
833
834 if (re->skb) {
835 pci_unmap_single(sky2->hw->pdev,
836 re->mapaddr, sky2->rx_bufsize,
837 PCI_DMA_FROMDEVICE);
838 kfree_skb(re->skb);
839 re->skb = NULL;
840 }
841 }
842 }
843
844 /* Basic MII support */
845 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
846 {
847 struct mii_ioctl_data *data = if_mii(ifr);
848 struct sky2_port *sky2 = netdev_priv(dev);
849 struct sky2_hw *hw = sky2->hw;
850 int err = -EOPNOTSUPP;
851
852 if (!netif_running(dev))
853 return -ENODEV; /* Phy still in reset */
854
855 switch (cmd) {
856 case SIOCGMIIPHY:
857 data->phy_id = PHY_ADDR_MARV;
858
859 /* fallthru */
860 case SIOCGMIIREG: {
861 u16 val = 0;
862
863 spin_lock_bh(&sky2->phy_lock);
864 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
865 spin_unlock_bh(&sky2->phy_lock);
866
867 data->val_out = val;
868 break;
869 }
870
871 case SIOCSMIIREG:
872 if (!capable(CAP_NET_ADMIN))
873 return -EPERM;
874
875 spin_lock_bh(&sky2->phy_lock);
876 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
877 data->val_in);
878 spin_unlock_bh(&sky2->phy_lock);
879 break;
880 }
881 return err;
882 }
883
884 #ifdef SKY2_VLAN_TAG_USED
885 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
886 {
887 struct sky2_port *sky2 = netdev_priv(dev);
888 struct sky2_hw *hw = sky2->hw;
889 u16 port = sky2->port;
890
891 spin_lock_bh(&sky2->tx_lock);
892
893 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_ON);
894 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_ON);
895 sky2->vlgrp = grp;
896
897 spin_unlock_bh(&sky2->tx_lock);
898 }
899
900 static void sky2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
901 {
902 struct sky2_port *sky2 = netdev_priv(dev);
903 struct sky2_hw *hw = sky2->hw;
904 u16 port = sky2->port;
905
906 spin_lock_bh(&sky2->tx_lock);
907
908 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_OFF);
909 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_OFF);
910 if (sky2->vlgrp)
911 sky2->vlgrp->vlan_devices[vid] = NULL;
912
913 spin_unlock_bh(&sky2->tx_lock);
914 }
915 #endif
916
917 /*
918 * It appears the hardware has a bug in the FIFO logic that
919 * cause it to hang if the FIFO gets overrun and the receive buffer
920 * is not aligned. ALso alloc_skb() won't align properly if slab
921 * debugging is enabled.
922 */
923 static inline struct sk_buff *sky2_alloc_skb(unsigned int size, gfp_t gfp_mask)
924 {
925 struct sk_buff *skb;
926
927 skb = alloc_skb(size + RX_SKB_ALIGN, gfp_mask);
928 if (likely(skb)) {
929 unsigned long p = (unsigned long) skb->data;
930 skb_reserve(skb,
931 ((p + RX_SKB_ALIGN - 1) & ~(RX_SKB_ALIGN - 1)) - p);
932 }
933
934 return skb;
935 }
936
937 /*
938 * Allocate and setup receiver buffer pool.
939 * In case of 64 bit dma, there are 2X as many list elements
940 * available as ring entries
941 * and need to reserve one list element so we don't wrap around.
942 */
943 static int sky2_rx_start(struct sky2_port *sky2)
944 {
945 struct sky2_hw *hw = sky2->hw;
946 unsigned rxq = rxqaddr[sky2->port];
947 int i;
948
949 sky2->rx_put = sky2->rx_next = 0;
950 sky2_qset(hw, rxq);
951
952 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev >= 2) {
953 /* MAC Rx RAM Read is controlled by hardware */
954 sky2_write32(hw, Q_ADDR(rxq, Q_F), F_M_RX_RAM_DIS);
955 }
956
957 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
958
959 rx_set_checksum(sky2);
960 for (i = 0; i < sky2->rx_pending; i++) {
961 struct ring_info *re = sky2->rx_ring + i;
962
963 re->skb = sky2_alloc_skb(sky2->rx_bufsize, GFP_KERNEL);
964 if (!re->skb)
965 goto nomem;
966
967 re->mapaddr = pci_map_single(hw->pdev, re->skb->data,
968 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
969 sky2_rx_add(sky2, re->mapaddr);
970 }
971
972 /* Truncate oversize frames */
973 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), sky2->rx_bufsize - 8);
974 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
975
976 /* Tell chip about available buffers */
977 sky2_write16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX), sky2->rx_put);
978 return 0;
979 nomem:
980 sky2_rx_clean(sky2);
981 return -ENOMEM;
982 }
983
984 /* Bring up network interface. */
985 static int sky2_up(struct net_device *dev)
986 {
987 struct sky2_port *sky2 = netdev_priv(dev);
988 struct sky2_hw *hw = sky2->hw;
989 unsigned port = sky2->port;
990 u32 ramsize, rxspace, imask;
991 int err = -ENOMEM;
992
993 if (netif_msg_ifup(sky2))
994 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
995
996 /* must be power of 2 */
997 sky2->tx_le = pci_alloc_consistent(hw->pdev,
998 TX_RING_SIZE *
999 sizeof(struct sky2_tx_le),
1000 &sky2->tx_le_map);
1001 if (!sky2->tx_le)
1002 goto err_out;
1003
1004 sky2->tx_ring = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info),
1005 GFP_KERNEL);
1006 if (!sky2->tx_ring)
1007 goto err_out;
1008 sky2->tx_prod = sky2->tx_cons = 0;
1009
1010 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1011 &sky2->rx_le_map);
1012 if (!sky2->rx_le)
1013 goto err_out;
1014 memset(sky2->rx_le, 0, RX_LE_BYTES);
1015
1016 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct ring_info),
1017 GFP_KERNEL);
1018 if (!sky2->rx_ring)
1019 goto err_out;
1020
1021 sky2_mac_init(hw, port);
1022
1023 /* Determine available ram buffer space (in 4K blocks).
1024 * Note: not sure about the FE setting below yet
1025 */
1026 if (hw->chip_id == CHIP_ID_YUKON_FE)
1027 ramsize = 4;
1028 else
1029 ramsize = sky2_read8(hw, B2_E_0);
1030
1031 /* Give transmitter one third (rounded up) */
1032 rxspace = ramsize - (ramsize + 2) / 3;
1033
1034 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1035 sky2_ramset(hw, txqaddr[port], rxspace, ramsize);
1036
1037 /* Make sure SyncQ is disabled */
1038 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1039 RB_RST_SET);
1040
1041 sky2_qset(hw, txqaddr[port]);
1042
1043 /* Set almost empty threshold */
1044 if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev == 1)
1045 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), 0x1a0);
1046
1047 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1048 TX_RING_SIZE - 1);
1049
1050 err = sky2_rx_start(sky2);
1051 if (err)
1052 goto err_out;
1053
1054 /* Enable interrupts from phy/mac for port */
1055 imask = sky2_read32(hw, B0_IMSK);
1056 imask |= (port == 0) ? Y2_IS_PORT_1 : Y2_IS_PORT_2;
1057 sky2_write32(hw, B0_IMSK, imask);
1058
1059 return 0;
1060
1061 err_out:
1062 if (sky2->rx_le) {
1063 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1064 sky2->rx_le, sky2->rx_le_map);
1065 sky2->rx_le = NULL;
1066 }
1067 if (sky2->tx_le) {
1068 pci_free_consistent(hw->pdev,
1069 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1070 sky2->tx_le, sky2->tx_le_map);
1071 sky2->tx_le = NULL;
1072 }
1073 kfree(sky2->tx_ring);
1074 kfree(sky2->rx_ring);
1075
1076 sky2->tx_ring = NULL;
1077 sky2->rx_ring = NULL;
1078 return err;
1079 }
1080
1081 /* Modular subtraction in ring */
1082 static inline int tx_dist(unsigned tail, unsigned head)
1083 {
1084 return (head - tail) % TX_RING_SIZE;
1085 }
1086
1087 /* Number of list elements available for next tx */
1088 static inline int tx_avail(const struct sky2_port *sky2)
1089 {
1090 return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
1091 }
1092
1093 /* Estimate of number of transmit list elements required */
1094 static unsigned tx_le_req(const struct sk_buff *skb)
1095 {
1096 unsigned count;
1097
1098 count = sizeof(dma_addr_t) / sizeof(u32);
1099 count += skb_shinfo(skb)->nr_frags * count;
1100
1101 if (skb_shinfo(skb)->tso_size)
1102 ++count;
1103
1104 if (skb->ip_summed == CHECKSUM_HW)
1105 ++count;
1106
1107 return count;
1108 }
1109
1110 /*
1111 * Put one packet in ring for transmit.
1112 * A single packet can generate multiple list elements, and
1113 * the number of ring elements will probably be less than the number
1114 * of list elements used.
1115 *
1116 * No BH disabling for tx_lock here (like tg3)
1117 */
1118 static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1119 {
1120 struct sky2_port *sky2 = netdev_priv(dev);
1121 struct sky2_hw *hw = sky2->hw;
1122 struct sky2_tx_le *le = NULL;
1123 struct tx_ring_info *re;
1124 unsigned i, len;
1125 int avail;
1126 dma_addr_t mapping;
1127 u32 addr64;
1128 u16 mss;
1129 u8 ctrl;
1130
1131 /* No BH disabling for tx_lock here. We are running in BH disabled
1132 * context and TX reclaim runs via poll inside of a software
1133 * interrupt, and no related locks in IRQ processing.
1134 */
1135 if (!spin_trylock(&sky2->tx_lock))
1136 return NETDEV_TX_LOCKED;
1137
1138 if (unlikely(tx_avail(sky2) < tx_le_req(skb))) {
1139 /* There is a known but harmless race with lockless tx
1140 * and netif_stop_queue.
1141 */
1142 if (!netif_queue_stopped(dev)) {
1143 netif_stop_queue(dev);
1144 if (net_ratelimit())
1145 printk(KERN_WARNING PFX "%s: ring full when queue awake!\n",
1146 dev->name);
1147 }
1148 spin_unlock(&sky2->tx_lock);
1149
1150 return NETDEV_TX_BUSY;
1151 }
1152
1153 if (unlikely(netif_msg_tx_queued(sky2)))
1154 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1155 dev->name, sky2->tx_prod, skb->len);
1156
1157 len = skb_headlen(skb);
1158 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1159 addr64 = high32(mapping);
1160
1161 re = sky2->tx_ring + sky2->tx_prod;
1162
1163 /* Send high bits if changed or crosses boundary */
1164 if (addr64 != sky2->tx_addr64 || high32(mapping + len) != sky2->tx_addr64) {
1165 le = get_tx_le(sky2);
1166 le->tx.addr = cpu_to_le32(addr64);
1167 le->ctrl = 0;
1168 le->opcode = OP_ADDR64 | HW_OWNER;
1169 sky2->tx_addr64 = high32(mapping + len);
1170 }
1171
1172 /* Check for TCP Segmentation Offload */
1173 mss = skb_shinfo(skb)->tso_size;
1174 if (mss != 0) {
1175 /* just drop the packet if non-linear expansion fails */
1176 if (skb_header_cloned(skb) &&
1177 pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) {
1178 dev_kfree_skb_any(skb);
1179 goto out_unlock;
1180 }
1181
1182 mss += ((skb->h.th->doff - 5) * 4); /* TCP options */
1183 mss += (skb->nh.iph->ihl * 4) + sizeof(struct tcphdr);
1184 mss += ETH_HLEN;
1185 }
1186
1187 if (mss != sky2->tx_last_mss) {
1188 le = get_tx_le(sky2);
1189 le->tx.tso.size = cpu_to_le16(mss);
1190 le->tx.tso.rsvd = 0;
1191 le->opcode = OP_LRGLEN | HW_OWNER;
1192 le->ctrl = 0;
1193 sky2->tx_last_mss = mss;
1194 }
1195
1196 ctrl = 0;
1197 #ifdef SKY2_VLAN_TAG_USED
1198 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1199 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1200 if (!le) {
1201 le = get_tx_le(sky2);
1202 le->tx.addr = 0;
1203 le->opcode = OP_VLAN|HW_OWNER;
1204 le->ctrl = 0;
1205 } else
1206 le->opcode |= OP_VLAN;
1207 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1208 ctrl |= INS_VLAN;
1209 }
1210 #endif
1211
1212 /* Handle TCP checksum offload */
1213 if (skb->ip_summed == CHECKSUM_HW) {
1214 u16 hdr = skb->h.raw - skb->data;
1215 u16 offset = hdr + skb->csum;
1216
1217 ctrl = CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1218 if (skb->nh.iph->protocol == IPPROTO_UDP)
1219 ctrl |= UDPTCP;
1220
1221 le = get_tx_le(sky2);
1222 le->tx.csum.start = cpu_to_le16(hdr);
1223 le->tx.csum.offset = cpu_to_le16(offset);
1224 le->length = 0; /* initial checksum value */
1225 le->ctrl = 1; /* one packet */
1226 le->opcode = OP_TCPLISW | HW_OWNER;
1227 }
1228
1229 le = get_tx_le(sky2);
1230 le->tx.addr = cpu_to_le32((u32) mapping);
1231 le->length = cpu_to_le16(len);
1232 le->ctrl = ctrl;
1233 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1234
1235 /* Record the transmit mapping info */
1236 re->skb = skb;
1237 pci_unmap_addr_set(re, mapaddr, mapping);
1238
1239 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1240 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1241 struct tx_ring_info *fre;
1242
1243 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1244 frag->size, PCI_DMA_TODEVICE);
1245 addr64 = high32(mapping);
1246 if (addr64 != sky2->tx_addr64) {
1247 le = get_tx_le(sky2);
1248 le->tx.addr = cpu_to_le32(addr64);
1249 le->ctrl = 0;
1250 le->opcode = OP_ADDR64 | HW_OWNER;
1251 sky2->tx_addr64 = addr64;
1252 }
1253
1254 le = get_tx_le(sky2);
1255 le->tx.addr = cpu_to_le32((u32) mapping);
1256 le->length = cpu_to_le16(frag->size);
1257 le->ctrl = ctrl;
1258 le->opcode = OP_BUFFER | HW_OWNER;
1259
1260 fre = sky2->tx_ring
1261 + ((re - sky2->tx_ring) + i + 1) % TX_RING_SIZE;
1262 pci_unmap_addr_set(fre, mapaddr, mapping);
1263 }
1264
1265 re->idx = sky2->tx_prod;
1266 le->ctrl |= EOP;
1267
1268 avail = tx_avail(sky2);
1269 if (mss != 0 || avail < TX_MIN_PENDING) {
1270 le->ctrl |= FRC_STAT;
1271 if (avail <= MAX_SKB_TX_LE)
1272 netif_stop_queue(dev);
1273 }
1274
1275 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1276
1277 out_unlock:
1278 spin_unlock(&sky2->tx_lock);
1279
1280 dev->trans_start = jiffies;
1281 return NETDEV_TX_OK;
1282 }
1283
1284 /*
1285 * Free ring elements from starting at tx_cons until "done"
1286 *
1287 * NB: the hardware will tell us about partial completion of multi-part
1288 * buffers; these are deferred until completion.
1289 */
1290 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1291 {
1292 struct net_device *dev = sky2->netdev;
1293 struct pci_dev *pdev = sky2->hw->pdev;
1294 u16 nxt, put;
1295 unsigned i;
1296
1297 BUG_ON(done >= TX_RING_SIZE);
1298
1299 if (unlikely(netif_msg_tx_done(sky2)))
1300 printk(KERN_DEBUG "%s: tx done, up to %u\n",
1301 dev->name, done);
1302
1303 for (put = sky2->tx_cons; put != done; put = nxt) {
1304 struct tx_ring_info *re = sky2->tx_ring + put;
1305 struct sk_buff *skb = re->skb;
1306
1307 nxt = re->idx;
1308 BUG_ON(nxt >= TX_RING_SIZE);
1309 prefetch(sky2->tx_ring + nxt);
1310
1311 /* Check for partial status */
1312 if (tx_dist(put, done) < tx_dist(put, nxt))
1313 break;
1314
1315 skb = re->skb;
1316 pci_unmap_single(pdev, pci_unmap_addr(re, mapaddr),
1317 skb_headlen(skb), PCI_DMA_TODEVICE);
1318
1319 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1320 struct tx_ring_info *fre;
1321 fre = sky2->tx_ring + (put + i + 1) % TX_RING_SIZE;
1322 pci_unmap_page(pdev, pci_unmap_addr(fre, mapaddr),
1323 skb_shinfo(skb)->frags[i].size,
1324 PCI_DMA_TODEVICE);
1325 }
1326
1327 dev_kfree_skb_any(skb);
1328 }
1329
1330 sky2->tx_cons = put;
1331 if (netif_queue_stopped(dev) && tx_avail(sky2) > MAX_SKB_TX_LE)
1332 netif_wake_queue(dev);
1333 }
1334
1335 /* Cleanup all untransmitted buffers, assume transmitter not running */
1336 static void sky2_tx_clean(struct sky2_port *sky2)
1337 {
1338 spin_lock_bh(&sky2->tx_lock);
1339 sky2_tx_complete(sky2, sky2->tx_prod);
1340 spin_unlock_bh(&sky2->tx_lock);
1341 }
1342
1343 /* Network shutdown */
1344 static int sky2_down(struct net_device *dev)
1345 {
1346 struct sky2_port *sky2 = netdev_priv(dev);
1347 struct sky2_hw *hw = sky2->hw;
1348 unsigned port = sky2->port;
1349 u16 ctrl;
1350 u32 imask;
1351
1352 /* Never really got started! */
1353 if (!sky2->tx_le)
1354 return 0;
1355
1356 if (netif_msg_ifdown(sky2))
1357 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1358
1359 /* Stop more packets from being queued */
1360 netif_stop_queue(dev);
1361
1362 sky2_phy_reset(hw, port);
1363
1364 /* Stop transmitter */
1365 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1366 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1367
1368 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1369 RB_RST_SET | RB_DIS_OP_MD);
1370
1371 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1372 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1373 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1374
1375 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1376
1377 /* Workaround shared GMAC reset */
1378 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1379 && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1380 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1381
1382 /* Disable Force Sync bit and Enable Alloc bit */
1383 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1384 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1385
1386 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1387 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1388 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1389
1390 /* Reset the PCI FIFO of the async Tx queue */
1391 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1392 BMU_RST_SET | BMU_FIFO_RST);
1393
1394 /* Reset the Tx prefetch units */
1395 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1396 PREF_UNIT_RST_SET);
1397
1398 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1399
1400 sky2_rx_stop(sky2);
1401
1402 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1403 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1404
1405 /* Disable port IRQ */
1406 imask = sky2_read32(hw, B0_IMSK);
1407 imask &= ~(sky2->port == 0) ? Y2_IS_PORT_1 : Y2_IS_PORT_2;
1408 sky2_write32(hw, B0_IMSK, imask);
1409
1410 /* turn off LED's */
1411 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1412
1413 synchronize_irq(hw->pdev->irq);
1414
1415 sky2_tx_clean(sky2);
1416 sky2_rx_clean(sky2);
1417
1418 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1419 sky2->rx_le, sky2->rx_le_map);
1420 kfree(sky2->rx_ring);
1421
1422 pci_free_consistent(hw->pdev,
1423 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1424 sky2->tx_le, sky2->tx_le_map);
1425 kfree(sky2->tx_ring);
1426
1427 sky2->tx_le = NULL;
1428 sky2->rx_le = NULL;
1429
1430 sky2->rx_ring = NULL;
1431 sky2->tx_ring = NULL;
1432
1433 return 0;
1434 }
1435
1436 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1437 {
1438 if (!hw->copper)
1439 return SPEED_1000;
1440
1441 if (hw->chip_id == CHIP_ID_YUKON_FE)
1442 return (aux & PHY_M_PS_SPEED_100) ? SPEED_100 : SPEED_10;
1443
1444 switch (aux & PHY_M_PS_SPEED_MSK) {
1445 case PHY_M_PS_SPEED_1000:
1446 return SPEED_1000;
1447 case PHY_M_PS_SPEED_100:
1448 return SPEED_100;
1449 default:
1450 return SPEED_10;
1451 }
1452 }
1453
1454 static void sky2_link_up(struct sky2_port *sky2)
1455 {
1456 struct sky2_hw *hw = sky2->hw;
1457 unsigned port = sky2->port;
1458 u16 reg;
1459
1460 /* Enable Transmit FIFO Underrun */
1461 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
1462
1463 reg = gma_read16(hw, port, GM_GP_CTRL);
1464 if (sky2->autoneg == AUTONEG_DISABLE) {
1465 reg |= GM_GPCR_AU_ALL_DIS;
1466
1467 /* Is write/read necessary? Copied from sky2_mac_init */
1468 gma_write16(hw, port, GM_GP_CTRL, reg);
1469 gma_read16(hw, port, GM_GP_CTRL);
1470
1471 switch (sky2->speed) {
1472 case SPEED_1000:
1473 reg &= ~GM_GPCR_SPEED_100;
1474 reg |= GM_GPCR_SPEED_1000;
1475 break;
1476 case SPEED_100:
1477 reg &= ~GM_GPCR_SPEED_1000;
1478 reg |= GM_GPCR_SPEED_100;
1479 break;
1480 case SPEED_10:
1481 reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
1482 break;
1483 }
1484 } else
1485 reg &= ~GM_GPCR_AU_ALL_DIS;
1486
1487 if (sky2->duplex == DUPLEX_FULL || sky2->autoneg == AUTONEG_ENABLE)
1488 reg |= GM_GPCR_DUP_FULL;
1489
1490 /* enable Rx/Tx */
1491 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1492 gma_write16(hw, port, GM_GP_CTRL, reg);
1493 gma_read16(hw, port, GM_GP_CTRL);
1494
1495 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1496
1497 netif_carrier_on(sky2->netdev);
1498 netif_wake_queue(sky2->netdev);
1499
1500 /* Turn on link LED */
1501 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1502 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1503
1504 if (hw->chip_id == CHIP_ID_YUKON_XL) {
1505 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
1506
1507 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
1508 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
1509 PHY_M_LEDC_INIT_CTRL(sky2->speed ==
1510 SPEED_10 ? 7 : 0) |
1511 PHY_M_LEDC_STA1_CTRL(sky2->speed ==
1512 SPEED_100 ? 7 : 0) |
1513 PHY_M_LEDC_STA0_CTRL(sky2->speed ==
1514 SPEED_1000 ? 7 : 0));
1515 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
1516 }
1517
1518 if (netif_msg_link(sky2))
1519 printk(KERN_INFO PFX
1520 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1521 sky2->netdev->name, sky2->speed,
1522 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1523 (sky2->tx_pause && sky2->rx_pause) ? "both" :
1524 sky2->tx_pause ? "tx" : sky2->rx_pause ? "rx" : "none");
1525 }
1526
1527 static void sky2_link_down(struct sky2_port *sky2)
1528 {
1529 struct sky2_hw *hw = sky2->hw;
1530 unsigned port = sky2->port;
1531 u16 reg;
1532
1533 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1534
1535 reg = gma_read16(hw, port, GM_GP_CTRL);
1536 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1537 gma_write16(hw, port, GM_GP_CTRL, reg);
1538 gma_read16(hw, port, GM_GP_CTRL); /* PCI post */
1539
1540 if (sky2->rx_pause && !sky2->tx_pause) {
1541 /* restore Asymmetric Pause bit */
1542 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV,
1543 gm_phy_read(hw, port, PHY_MARV_AUNE_ADV)
1544 | PHY_M_AN_ASP);
1545 }
1546
1547 netif_carrier_off(sky2->netdev);
1548 netif_stop_queue(sky2->netdev);
1549
1550 /* Turn on link LED */
1551 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1552
1553 if (netif_msg_link(sky2))
1554 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
1555 sky2_phy_init(hw, port);
1556 }
1557
1558 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
1559 {
1560 struct sky2_hw *hw = sky2->hw;
1561 unsigned port = sky2->port;
1562 u16 lpa;
1563
1564 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
1565
1566 if (lpa & PHY_M_AN_RF) {
1567 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
1568 return -1;
1569 }
1570
1571 if (hw->chip_id != CHIP_ID_YUKON_FE &&
1572 gm_phy_read(hw, port, PHY_MARV_1000T_STAT) & PHY_B_1000S_MSF) {
1573 printk(KERN_ERR PFX "%s: master/slave fault",
1574 sky2->netdev->name);
1575 return -1;
1576 }
1577
1578 if (!(aux & PHY_M_PS_SPDUP_RES)) {
1579 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
1580 sky2->netdev->name);
1581 return -1;
1582 }
1583
1584 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1585
1586 sky2->speed = sky2_phy_speed(hw, aux);
1587
1588 /* Pause bits are offset (9..8) */
1589 if (hw->chip_id == CHIP_ID_YUKON_XL)
1590 aux >>= 6;
1591
1592 sky2->rx_pause = (aux & PHY_M_PS_RX_P_EN) != 0;
1593 sky2->tx_pause = (aux & PHY_M_PS_TX_P_EN) != 0;
1594
1595 if ((sky2->tx_pause || sky2->rx_pause)
1596 && !(sky2->speed < SPEED_1000 && sky2->duplex == DUPLEX_HALF))
1597 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
1598 else
1599 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1600
1601 return 0;
1602 }
1603
1604 /* Interrupt from PHY */
1605 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
1606 {
1607 struct net_device *dev = hw->dev[port];
1608 struct sky2_port *sky2 = netdev_priv(dev);
1609 u16 istatus, phystat;
1610
1611 spin_lock(&sky2->phy_lock);
1612 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
1613 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
1614
1615 if (!netif_running(dev))
1616 goto out;
1617
1618 if (netif_msg_intr(sky2))
1619 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
1620 sky2->netdev->name, istatus, phystat);
1621
1622 if (istatus & PHY_M_IS_AN_COMPL) {
1623 if (sky2_autoneg_done(sky2, phystat) == 0)
1624 sky2_link_up(sky2);
1625 goto out;
1626 }
1627
1628 if (istatus & PHY_M_IS_LSP_CHANGE)
1629 sky2->speed = sky2_phy_speed(hw, phystat);
1630
1631 if (istatus & PHY_M_IS_DUP_CHANGE)
1632 sky2->duplex =
1633 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1634
1635 if (istatus & PHY_M_IS_LST_CHANGE) {
1636 if (phystat & PHY_M_PS_LINK_UP)
1637 sky2_link_up(sky2);
1638 else
1639 sky2_link_down(sky2);
1640 }
1641 out:
1642 spin_unlock(&sky2->phy_lock);
1643 }
1644
1645
1646 /* Transmit timeout is only called if we are running, carries is up
1647 * and tx queue is full (stopped).
1648 */
1649 static void sky2_tx_timeout(struct net_device *dev)
1650 {
1651 struct sky2_port *sky2 = netdev_priv(dev);
1652 struct sky2_hw *hw = sky2->hw;
1653 unsigned txq = txqaddr[sky2->port];
1654
1655 if (netif_msg_timer(sky2))
1656 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
1657
1658 sky2_write32(hw, Q_ADDR(txq, Q_CSR), BMU_STOP);
1659 sky2_write32(hw, Y2_QADDR(txq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1660
1661 sky2_tx_clean(sky2);
1662
1663 sky2_qset(hw, txq);
1664 sky2_prefetch_init(hw, txq, sky2->tx_le_map, TX_RING_SIZE - 1);
1665 }
1666
1667
1668 #define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
1669 /* Want receive buffer size to be multiple of 64 bits
1670 * and incl room for vlan and truncation
1671 */
1672 static inline unsigned sky2_buf_size(int mtu)
1673 {
1674 return roundup(mtu + ETH_HLEN + VLAN_HLEN, 8) + 8;
1675 }
1676
1677 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
1678 {
1679 struct sky2_port *sky2 = netdev_priv(dev);
1680 struct sky2_hw *hw = sky2->hw;
1681 int err;
1682 u16 ctl, mode;
1683 u32 imask;
1684
1685 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
1686 return -EINVAL;
1687
1688 if (hw->chip_id == CHIP_ID_YUKON_EC_U && new_mtu > ETH_DATA_LEN)
1689 return -EINVAL;
1690
1691 if (!netif_running(dev)) {
1692 dev->mtu = new_mtu;
1693 return 0;
1694 }
1695
1696 imask = sky2_read32(hw, B0_IMSK);
1697 sky2_write32(hw, B0_IMSK, 0);
1698
1699 dev->trans_start = jiffies; /* prevent tx timeout */
1700 netif_stop_queue(dev);
1701 netif_poll_disable(hw->dev[0]);
1702
1703 synchronize_irq(hw->pdev->irq);
1704
1705 ctl = gma_read16(hw, sky2->port, GM_GP_CTRL);
1706 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
1707 sky2_rx_stop(sky2);
1708 sky2_rx_clean(sky2);
1709
1710 dev->mtu = new_mtu;
1711 sky2->rx_bufsize = sky2_buf_size(new_mtu);
1712 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
1713 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
1714
1715 if (dev->mtu > ETH_DATA_LEN)
1716 mode |= GM_SMOD_JUMBO_ENA;
1717
1718 gma_write16(hw, sky2->port, GM_SERIAL_MODE, mode);
1719
1720 sky2_write8(hw, RB_ADDR(rxqaddr[sky2->port], RB_CTRL), RB_ENA_OP_MD);
1721
1722 err = sky2_rx_start(sky2);
1723 sky2_write32(hw, B0_IMSK, imask);
1724
1725 if (err)
1726 dev_close(dev);
1727 else {
1728 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl);
1729
1730 netif_poll_enable(hw->dev[0]);
1731 netif_wake_queue(dev);
1732 }
1733
1734 return err;
1735 }
1736
1737 /*
1738 * Receive one packet.
1739 * For small packets or errors, just reuse existing skb.
1740 * For larger packets, get new buffer.
1741 */
1742 static struct sk_buff *sky2_receive(struct sky2_port *sky2,
1743 u16 length, u32 status)
1744 {
1745 struct ring_info *re = sky2->rx_ring + sky2->rx_next;
1746 struct sk_buff *skb = NULL;
1747
1748 if (unlikely(netif_msg_rx_status(sky2)))
1749 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
1750 sky2->netdev->name, sky2->rx_next, status, length);
1751
1752 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
1753 prefetch(sky2->rx_ring + sky2->rx_next);
1754
1755 if (status & GMR_FS_ANY_ERR)
1756 goto error;
1757
1758 if (!(status & GMR_FS_RX_OK))
1759 goto resubmit;
1760
1761 if (length > sky2->netdev->mtu + ETH_HLEN)
1762 goto oversize;
1763
1764 if (length < copybreak) {
1765 skb = alloc_skb(length + 2, GFP_ATOMIC);
1766 if (!skb)
1767 goto resubmit;
1768
1769 skb_reserve(skb, 2);
1770 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->mapaddr,
1771 length, PCI_DMA_FROMDEVICE);
1772 memcpy(skb->data, re->skb->data, length);
1773 skb->ip_summed = re->skb->ip_summed;
1774 skb->csum = re->skb->csum;
1775 pci_dma_sync_single_for_device(sky2->hw->pdev, re->mapaddr,
1776 length, PCI_DMA_FROMDEVICE);
1777 } else {
1778 struct sk_buff *nskb;
1779
1780 nskb = sky2_alloc_skb(sky2->rx_bufsize, GFP_ATOMIC);
1781 if (!nskb)
1782 goto resubmit;
1783
1784 skb = re->skb;
1785 re->skb = nskb;
1786 pci_unmap_single(sky2->hw->pdev, re->mapaddr,
1787 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
1788 prefetch(skb->data);
1789
1790 re->mapaddr = pci_map_single(sky2->hw->pdev, nskb->data,
1791 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
1792 }
1793
1794 skb_put(skb, length);
1795 resubmit:
1796 re->skb->ip_summed = CHECKSUM_NONE;
1797 sky2_rx_add(sky2, re->mapaddr);
1798
1799 /* Tell receiver about new buffers. */
1800 sky2_put_idx(sky2->hw, rxqaddr[sky2->port], sky2->rx_put);
1801
1802 return skb;
1803
1804 oversize:
1805 ++sky2->net_stats.rx_over_errors;
1806 goto resubmit;
1807
1808 error:
1809 ++sky2->net_stats.rx_errors;
1810
1811 if (netif_msg_rx_err(sky2) && net_ratelimit())
1812 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
1813 sky2->netdev->name, status, length);
1814
1815 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
1816 sky2->net_stats.rx_length_errors++;
1817 if (status & GMR_FS_FRAGMENT)
1818 sky2->net_stats.rx_frame_errors++;
1819 if (status & GMR_FS_CRC_ERR)
1820 sky2->net_stats.rx_crc_errors++;
1821 if (status & GMR_FS_RX_FF_OV)
1822 sky2->net_stats.rx_fifo_errors++;
1823
1824 goto resubmit;
1825 }
1826
1827 /* Transmit complete */
1828 static inline void sky2_tx_done(struct net_device *dev, u16 last)
1829 {
1830 struct sky2_port *sky2 = netdev_priv(dev);
1831
1832 if (netif_running(dev)) {
1833 spin_lock(&sky2->tx_lock);
1834 sky2_tx_complete(sky2, last);
1835 spin_unlock(&sky2->tx_lock);
1836 }
1837 }
1838
1839 /* Process status response ring */
1840 static int sky2_status_intr(struct sky2_hw *hw, int to_do)
1841 {
1842 int work_done = 0;
1843
1844 rmb();
1845
1846 for(;;) {
1847 struct sky2_status_le *le = hw->st_le + hw->st_idx;
1848 struct net_device *dev;
1849 struct sky2_port *sky2;
1850 struct sk_buff *skb;
1851 u32 status;
1852 u16 length;
1853 u8 link, opcode;
1854
1855 opcode = le->opcode;
1856 if (!opcode)
1857 break;
1858 opcode &= ~HW_OWNER;
1859
1860 hw->st_idx = (hw->st_idx + 1) % STATUS_RING_SIZE;
1861 le->opcode = 0;
1862
1863 link = le->link;
1864 BUG_ON(link >= 2);
1865 dev = hw->dev[link];
1866
1867 sky2 = netdev_priv(dev);
1868 length = le->length;
1869 status = le->status;
1870
1871 switch (opcode) {
1872 case OP_RXSTAT:
1873 skb = sky2_receive(sky2, length, status);
1874 if (!skb)
1875 break;
1876
1877 skb->dev = dev;
1878 skb->protocol = eth_type_trans(skb, dev);
1879 dev->last_rx = jiffies;
1880
1881 #ifdef SKY2_VLAN_TAG_USED
1882 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
1883 vlan_hwaccel_receive_skb(skb,
1884 sky2->vlgrp,
1885 be16_to_cpu(sky2->rx_tag));
1886 } else
1887 #endif
1888 netif_receive_skb(skb);
1889
1890 if (++work_done >= to_do)
1891 goto exit_loop;
1892 break;
1893
1894 #ifdef SKY2_VLAN_TAG_USED
1895 case OP_RXVLAN:
1896 sky2->rx_tag = length;
1897 break;
1898
1899 case OP_RXCHKSVLAN:
1900 sky2->rx_tag = length;
1901 /* fall through */
1902 #endif
1903 case OP_RXCHKS:
1904 skb = sky2->rx_ring[sky2->rx_next].skb;
1905 skb->ip_summed = CHECKSUM_HW;
1906 skb->csum = le16_to_cpu(status);
1907 break;
1908
1909 case OP_TXINDEXLE:
1910 /* TX index reports status for both ports */
1911 sky2_tx_done(hw->dev[0], status & 0xffff);
1912 if (hw->dev[1])
1913 sky2_tx_done(hw->dev[1],
1914 ((status >> 24) & 0xff)
1915 | (u16)(length & 0xf) << 8);
1916 break;
1917
1918 default:
1919 if (net_ratelimit())
1920 printk(KERN_WARNING PFX
1921 "unknown status opcode 0x%x\n", opcode);
1922 break;
1923 }
1924 }
1925
1926 exit_loop:
1927 return work_done;
1928 }
1929
1930 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
1931 {
1932 struct net_device *dev = hw->dev[port];
1933
1934 if (net_ratelimit())
1935 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
1936 dev->name, status);
1937
1938 if (status & Y2_IS_PAR_RD1) {
1939 if (net_ratelimit())
1940 printk(KERN_ERR PFX "%s: ram data read parity error\n",
1941 dev->name);
1942 /* Clear IRQ */
1943 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
1944 }
1945
1946 if (status & Y2_IS_PAR_WR1) {
1947 if (net_ratelimit())
1948 printk(KERN_ERR PFX "%s: ram data write parity error\n",
1949 dev->name);
1950
1951 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
1952 }
1953
1954 if (status & Y2_IS_PAR_MAC1) {
1955 if (net_ratelimit())
1956 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
1957 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
1958 }
1959
1960 if (status & Y2_IS_PAR_RX1) {
1961 if (net_ratelimit())
1962 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
1963 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
1964 }
1965
1966 if (status & Y2_IS_TCP_TXA1) {
1967 if (net_ratelimit())
1968 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
1969 dev->name);
1970 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
1971 }
1972 }
1973
1974 static void sky2_hw_intr(struct sky2_hw *hw)
1975 {
1976 u32 status = sky2_read32(hw, B0_HWE_ISRC);
1977
1978 if (status & Y2_IS_TIST_OV)
1979 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
1980
1981 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
1982 u16 pci_err;
1983
1984 pci_err = sky2_pci_read16(hw, PCI_STATUS);
1985 if (net_ratelimit())
1986 printk(KERN_ERR PFX "%s: pci hw error (0x%x)\n",
1987 pci_name(hw->pdev), pci_err);
1988
1989 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
1990 sky2_pci_write16(hw, PCI_STATUS,
1991 pci_err | PCI_STATUS_ERROR_BITS);
1992 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
1993 }
1994
1995 if (status & Y2_IS_PCI_EXP) {
1996 /* PCI-Express uncorrectable Error occurred */
1997 u32 pex_err;
1998
1999 pex_err = sky2_pci_read32(hw, PEX_UNC_ERR_STAT);
2000
2001 if (net_ratelimit())
2002 printk(KERN_ERR PFX "%s: pci express error (0x%x)\n",
2003 pci_name(hw->pdev), pex_err);
2004
2005 /* clear the interrupt */
2006 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2007 sky2_pci_write32(hw, PEX_UNC_ERR_STAT,
2008 0xffffffffUL);
2009 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2010
2011 if (pex_err & PEX_FATAL_ERRORS) {
2012 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2013 hwmsk &= ~Y2_IS_PCI_EXP;
2014 sky2_write32(hw, B0_HWE_IMSK, hwmsk);
2015 }
2016 }
2017
2018 if (status & Y2_HWE_L1_MASK)
2019 sky2_hw_error(hw, 0, status);
2020 status >>= 8;
2021 if (status & Y2_HWE_L1_MASK)
2022 sky2_hw_error(hw, 1, status);
2023 }
2024
2025 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2026 {
2027 struct net_device *dev = hw->dev[port];
2028 struct sky2_port *sky2 = netdev_priv(dev);
2029 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2030
2031 if (netif_msg_intr(sky2))
2032 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2033 dev->name, status);
2034
2035 if (status & GM_IS_RX_FF_OR) {
2036 ++sky2->net_stats.rx_fifo_errors;
2037 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2038 }
2039
2040 if (status & GM_IS_TX_FF_UR) {
2041 ++sky2->net_stats.tx_fifo_errors;
2042 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2043 }
2044 }
2045
2046
2047 static int sky2_poll(struct net_device *dev0, int *budget)
2048 {
2049 struct sky2_hw *hw = ((struct sky2_port *) netdev_priv(dev0))->hw;
2050 int work_limit = min(dev0->quota, *budget);
2051 int work_done = 0;
2052 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2053
2054 if (status & Y2_IS_HW_ERR)
2055 sky2_hw_intr(hw);
2056
2057 if (status & Y2_IS_IRQ_PHY1)
2058 sky2_phy_intr(hw, 0);
2059
2060 if (status & Y2_IS_IRQ_PHY2)
2061 sky2_phy_intr(hw, 1);
2062
2063 if (status & Y2_IS_IRQ_MAC1)
2064 sky2_mac_intr(hw, 0);
2065
2066 if (status & Y2_IS_IRQ_MAC2)
2067 sky2_mac_intr(hw, 1);
2068
2069 if (status & Y2_IS_STAT_BMU) {
2070 work_done = sky2_status_intr(hw, work_limit);
2071 *budget -= work_done;
2072 dev0->quota -= work_done;
2073
2074 if (work_done >= work_limit)
2075 return 1;
2076
2077 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2078 }
2079
2080 netif_rx_complete(dev0);
2081
2082 status = sky2_read32(hw, B0_Y2_SP_LISR);
2083 return 0;
2084 }
2085
2086 static irqreturn_t sky2_intr(int irq, void *dev_id, struct pt_regs *regs)
2087 {
2088 struct sky2_hw *hw = dev_id;
2089 struct net_device *dev0 = hw->dev[0];
2090 u32 status;
2091
2092 /* Reading this mask interrupts as side effect */
2093 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2094 if (status == 0 || status == ~0)
2095 return IRQ_NONE;
2096
2097 prefetch(&hw->st_le[hw->st_idx]);
2098 if (likely(__netif_rx_schedule_prep(dev0)))
2099 __netif_rx_schedule(dev0);
2100
2101 return IRQ_HANDLED;
2102 }
2103
2104 #ifdef CONFIG_NET_POLL_CONTROLLER
2105 static void sky2_netpoll(struct net_device *dev)
2106 {
2107 struct sky2_port *sky2 = netdev_priv(dev);
2108
2109 sky2_intr(sky2->hw->pdev->irq, sky2->hw, NULL);
2110 }
2111 #endif
2112
2113 /* Chip internal frequency for clock calculations */
2114 static inline u32 sky2_mhz(const struct sky2_hw *hw)
2115 {
2116 switch (hw->chip_id) {
2117 case CHIP_ID_YUKON_EC:
2118 case CHIP_ID_YUKON_EC_U:
2119 return 125; /* 125 Mhz */
2120 case CHIP_ID_YUKON_FE:
2121 return 100; /* 100 Mhz */
2122 default: /* YUKON_XL */
2123 return 156; /* 156 Mhz */
2124 }
2125 }
2126
2127 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2128 {
2129 return sky2_mhz(hw) * us;
2130 }
2131
2132 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2133 {
2134 return clk / sky2_mhz(hw);
2135 }
2136
2137
2138 static int sky2_reset(struct sky2_hw *hw)
2139 {
2140 u16 status;
2141 u8 t8, pmd_type;
2142 int i;
2143
2144 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2145
2146 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2147 if (hw->chip_id < CHIP_ID_YUKON_XL || hw->chip_id > CHIP_ID_YUKON_FE) {
2148 printk(KERN_ERR PFX "%s: unsupported chip type 0x%x\n",
2149 pci_name(hw->pdev), hw->chip_id);
2150 return -EOPNOTSUPP;
2151 }
2152
2153 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2154
2155 /* This rev is really old, and requires untested workarounds */
2156 if (hw->chip_id == CHIP_ID_YUKON_EC && hw->chip_rev == CHIP_REV_YU_EC_A1) {
2157 printk(KERN_ERR PFX "%s: unsupported revision Yukon-%s (0x%x) rev %d\n",
2158 pci_name(hw->pdev), yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
2159 hw->chip_id, hw->chip_rev);
2160 return -EOPNOTSUPP;
2161 }
2162
2163 /* This chip is new and not tested yet */
2164 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
2165 pr_info(PFX "%s: is a version of Yukon 2 chipset that has not been tested yet.\n",
2166 pci_name(hw->pdev));
2167 pr_info("Please report success/failure to maintainer <shemminger@osdl.org>\n");
2168 }
2169
2170 /* disable ASF */
2171 if (hw->chip_id <= CHIP_ID_YUKON_EC) {
2172 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2173 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2174 }
2175
2176 /* do a SW reset */
2177 sky2_write8(hw, B0_CTST, CS_RST_SET);
2178 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2179
2180 /* clear PCI errors, if any */
2181 status = sky2_pci_read16(hw, PCI_STATUS);
2182
2183 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2184 sky2_pci_write16(hw, PCI_STATUS, status | PCI_STATUS_ERROR_BITS);
2185
2186
2187 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2188
2189 /* clear any PEX errors */
2190 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
2191 sky2_pci_write32(hw, PEX_UNC_ERR_STAT, 0xffffffffUL);
2192
2193
2194 pmd_type = sky2_read8(hw, B2_PMD_TYP);
2195 hw->copper = !(pmd_type == 'L' || pmd_type == 'S');
2196
2197 hw->ports = 1;
2198 t8 = sky2_read8(hw, B2_Y2_HW_RES);
2199 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
2200 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2201 ++hw->ports;
2202 }
2203
2204 sky2_set_power_state(hw, PCI_D0);
2205
2206 for (i = 0; i < hw->ports; i++) {
2207 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2208 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2209 }
2210
2211 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2212
2213 /* Clear I2C IRQ noise */
2214 sky2_write32(hw, B2_I2C_IRQ, 1);
2215
2216 /* turn off hardware timer (unused) */
2217 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2218 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
2219
2220 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
2221
2222 /* Turn off descriptor polling */
2223 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
2224
2225 /* Turn off receive timestamp */
2226 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
2227 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2228
2229 /* enable the Tx Arbiters */
2230 for (i = 0; i < hw->ports; i++)
2231 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
2232
2233 /* Initialize ram interface */
2234 for (i = 0; i < hw->ports; i++) {
2235 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
2236
2237 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
2238 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
2239 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
2240 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
2241 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
2242 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
2243 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
2244 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
2245 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
2246 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
2247 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
2248 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
2249 }
2250
2251 sky2_write32(hw, B0_HWE_IMSK, Y2_HWE_ALL_MASK);
2252
2253 for (i = 0; i < hw->ports; i++)
2254 sky2_phy_reset(hw, i);
2255
2256 memset(hw->st_le, 0, STATUS_LE_BYTES);
2257 hw->st_idx = 0;
2258
2259 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
2260 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
2261
2262 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
2263 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
2264
2265 /* Set the list last index */
2266 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
2267
2268 sky2_write16(hw, STAT_TX_IDX_TH, 10);
2269 sky2_write8(hw, STAT_FIFO_WM, 16);
2270
2271 /* set Status-FIFO ISR watermark */
2272 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
2273 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
2274 else
2275 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
2276
2277 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
2278 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
2279 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
2280
2281 /* enable status unit */
2282 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
2283
2284 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2285 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2286 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2287
2288 return 0;
2289 }
2290
2291 static u32 sky2_supported_modes(const struct sky2_hw *hw)
2292 {
2293 u32 modes;
2294 if (hw->copper) {
2295 modes = SUPPORTED_10baseT_Half
2296 | SUPPORTED_10baseT_Full
2297 | SUPPORTED_100baseT_Half
2298 | SUPPORTED_100baseT_Full
2299 | SUPPORTED_Autoneg | SUPPORTED_TP;
2300
2301 if (hw->chip_id != CHIP_ID_YUKON_FE)
2302 modes |= SUPPORTED_1000baseT_Half
2303 | SUPPORTED_1000baseT_Full;
2304 } else
2305 modes = SUPPORTED_1000baseT_Full | SUPPORTED_FIBRE
2306 | SUPPORTED_Autoneg;
2307 return modes;
2308 }
2309
2310 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2311 {
2312 struct sky2_port *sky2 = netdev_priv(dev);
2313 struct sky2_hw *hw = sky2->hw;
2314
2315 ecmd->transceiver = XCVR_INTERNAL;
2316 ecmd->supported = sky2_supported_modes(hw);
2317 ecmd->phy_address = PHY_ADDR_MARV;
2318 if (hw->copper) {
2319 ecmd->supported = SUPPORTED_10baseT_Half
2320 | SUPPORTED_10baseT_Full
2321 | SUPPORTED_100baseT_Half
2322 | SUPPORTED_100baseT_Full
2323 | SUPPORTED_1000baseT_Half
2324 | SUPPORTED_1000baseT_Full
2325 | SUPPORTED_Autoneg | SUPPORTED_TP;
2326 ecmd->port = PORT_TP;
2327 } else
2328 ecmd->port = PORT_FIBRE;
2329
2330 ecmd->advertising = sky2->advertising;
2331 ecmd->autoneg = sky2->autoneg;
2332 ecmd->speed = sky2->speed;
2333 ecmd->duplex = sky2->duplex;
2334 return 0;
2335 }
2336
2337 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2338 {
2339 struct sky2_port *sky2 = netdev_priv(dev);
2340 const struct sky2_hw *hw = sky2->hw;
2341 u32 supported = sky2_supported_modes(hw);
2342
2343 if (ecmd->autoneg == AUTONEG_ENABLE) {
2344 ecmd->advertising = supported;
2345 sky2->duplex = -1;
2346 sky2->speed = -1;
2347 } else {
2348 u32 setting;
2349
2350 switch (ecmd->speed) {
2351 case SPEED_1000:
2352 if (ecmd->duplex == DUPLEX_FULL)
2353 setting = SUPPORTED_1000baseT_Full;
2354 else if (ecmd->duplex == DUPLEX_HALF)
2355 setting = SUPPORTED_1000baseT_Half;
2356 else
2357 return -EINVAL;
2358 break;
2359 case SPEED_100:
2360 if (ecmd->duplex == DUPLEX_FULL)
2361 setting = SUPPORTED_100baseT_Full;
2362 else if (ecmd->duplex == DUPLEX_HALF)
2363 setting = SUPPORTED_100baseT_Half;
2364 else
2365 return -EINVAL;
2366 break;
2367
2368 case SPEED_10:
2369 if (ecmd->duplex == DUPLEX_FULL)
2370 setting = SUPPORTED_10baseT_Full;
2371 else if (ecmd->duplex == DUPLEX_HALF)
2372 setting = SUPPORTED_10baseT_Half;
2373 else
2374 return -EINVAL;
2375 break;
2376 default:
2377 return -EINVAL;
2378 }
2379
2380 if ((setting & supported) == 0)
2381 return -EINVAL;
2382
2383 sky2->speed = ecmd->speed;
2384 sky2->duplex = ecmd->duplex;
2385 }
2386
2387 sky2->autoneg = ecmd->autoneg;
2388 sky2->advertising = ecmd->advertising;
2389
2390 if (netif_running(dev))
2391 sky2_phy_reinit(sky2);
2392
2393 return 0;
2394 }
2395
2396 static void sky2_get_drvinfo(struct net_device *dev,
2397 struct ethtool_drvinfo *info)
2398 {
2399 struct sky2_port *sky2 = netdev_priv(dev);
2400
2401 strcpy(info->driver, DRV_NAME);
2402 strcpy(info->version, DRV_VERSION);
2403 strcpy(info->fw_version, "N/A");
2404 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
2405 }
2406
2407 static const struct sky2_stat {
2408 char name[ETH_GSTRING_LEN];
2409 u16 offset;
2410 } sky2_stats[] = {
2411 { "tx_bytes", GM_TXO_OK_HI },
2412 { "rx_bytes", GM_RXO_OK_HI },
2413 { "tx_broadcast", GM_TXF_BC_OK },
2414 { "rx_broadcast", GM_RXF_BC_OK },
2415 { "tx_multicast", GM_TXF_MC_OK },
2416 { "rx_multicast", GM_RXF_MC_OK },
2417 { "tx_unicast", GM_TXF_UC_OK },
2418 { "rx_unicast", GM_RXF_UC_OK },
2419 { "tx_mac_pause", GM_TXF_MPAUSE },
2420 { "rx_mac_pause", GM_RXF_MPAUSE },
2421 { "collisions", GM_TXF_SNG_COL },
2422 { "late_collision",GM_TXF_LAT_COL },
2423 { "aborted", GM_TXF_ABO_COL },
2424 { "multi_collisions", GM_TXF_MUL_COL },
2425 { "fifo_underrun", GM_TXE_FIFO_UR },
2426 { "fifo_overflow", GM_RXE_FIFO_OV },
2427 { "rx_toolong", GM_RXF_LNG_ERR },
2428 { "rx_jabber", GM_RXF_JAB_PKT },
2429 { "rx_runt", GM_RXE_FRAG },
2430 { "rx_too_long", GM_RXF_LNG_ERR },
2431 { "rx_fcs_error", GM_RXF_FCS_ERR },
2432 };
2433
2434 static u32 sky2_get_rx_csum(struct net_device *dev)
2435 {
2436 struct sky2_port *sky2 = netdev_priv(dev);
2437
2438 return sky2->rx_csum;
2439 }
2440
2441 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
2442 {
2443 struct sky2_port *sky2 = netdev_priv(dev);
2444
2445 sky2->rx_csum = data;
2446
2447 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2448 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
2449
2450 return 0;
2451 }
2452
2453 static u32 sky2_get_msglevel(struct net_device *netdev)
2454 {
2455 struct sky2_port *sky2 = netdev_priv(netdev);
2456 return sky2->msg_enable;
2457 }
2458
2459 static int sky2_nway_reset(struct net_device *dev)
2460 {
2461 struct sky2_port *sky2 = netdev_priv(dev);
2462
2463 if (sky2->autoneg != AUTONEG_ENABLE)
2464 return -EINVAL;
2465
2466 sky2_phy_reinit(sky2);
2467
2468 return 0;
2469 }
2470
2471 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
2472 {
2473 struct sky2_hw *hw = sky2->hw;
2474 unsigned port = sky2->port;
2475 int i;
2476
2477 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
2478 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
2479 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
2480 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
2481
2482 for (i = 2; i < count; i++)
2483 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
2484 }
2485
2486 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
2487 {
2488 struct sky2_port *sky2 = netdev_priv(netdev);
2489 sky2->msg_enable = value;
2490 }
2491
2492 static int sky2_get_stats_count(struct net_device *dev)
2493 {
2494 return ARRAY_SIZE(sky2_stats);
2495 }
2496
2497 static void sky2_get_ethtool_stats(struct net_device *dev,
2498 struct ethtool_stats *stats, u64 * data)
2499 {
2500 struct sky2_port *sky2 = netdev_priv(dev);
2501
2502 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
2503 }
2504
2505 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
2506 {
2507 int i;
2508
2509 switch (stringset) {
2510 case ETH_SS_STATS:
2511 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
2512 memcpy(data + i * ETH_GSTRING_LEN,
2513 sky2_stats[i].name, ETH_GSTRING_LEN);
2514 break;
2515 }
2516 }
2517
2518 /* Use hardware MIB variables for critical path statistics and
2519 * transmit feedback not reported at interrupt.
2520 * Other errors are accounted for in interrupt handler.
2521 */
2522 static struct net_device_stats *sky2_get_stats(struct net_device *dev)
2523 {
2524 struct sky2_port *sky2 = netdev_priv(dev);
2525 u64 data[13];
2526
2527 sky2_phy_stats(sky2, data, ARRAY_SIZE(data));
2528
2529 sky2->net_stats.tx_bytes = data[0];
2530 sky2->net_stats.rx_bytes = data[1];
2531 sky2->net_stats.tx_packets = data[2] + data[4] + data[6];
2532 sky2->net_stats.rx_packets = data[3] + data[5] + data[7];
2533 sky2->net_stats.multicast = data[5] + data[7];
2534 sky2->net_stats.collisions = data[10];
2535 sky2->net_stats.tx_aborted_errors = data[12];
2536
2537 return &sky2->net_stats;
2538 }
2539
2540 static int sky2_set_mac_address(struct net_device *dev, void *p)
2541 {
2542 struct sky2_port *sky2 = netdev_priv(dev);
2543 struct sky2_hw *hw = sky2->hw;
2544 unsigned port = sky2->port;
2545 const struct sockaddr *addr = p;
2546
2547 if (!is_valid_ether_addr(addr->sa_data))
2548 return -EADDRNOTAVAIL;
2549
2550 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
2551 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
2552 dev->dev_addr, ETH_ALEN);
2553 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
2554 dev->dev_addr, ETH_ALEN);
2555
2556 /* virtual address for data */
2557 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
2558
2559 /* physical address: used for pause frames */
2560 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
2561
2562 return 0;
2563 }
2564
2565 static void sky2_set_multicast(struct net_device *dev)
2566 {
2567 struct sky2_port *sky2 = netdev_priv(dev);
2568 struct sky2_hw *hw = sky2->hw;
2569 unsigned port = sky2->port;
2570 struct dev_mc_list *list = dev->mc_list;
2571 u16 reg;
2572 u8 filter[8];
2573
2574 memset(filter, 0, sizeof(filter));
2575
2576 reg = gma_read16(hw, port, GM_RX_CTRL);
2577 reg |= GM_RXCR_UCF_ENA;
2578
2579 if (dev->flags & IFF_PROMISC) /* promiscuous */
2580 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
2581 else if ((dev->flags & IFF_ALLMULTI) || dev->mc_count > 16) /* all multicast */
2582 memset(filter, 0xff, sizeof(filter));
2583 else if (dev->mc_count == 0) /* no multicast */
2584 reg &= ~GM_RXCR_MCF_ENA;
2585 else {
2586 int i;
2587 reg |= GM_RXCR_MCF_ENA;
2588
2589 for (i = 0; list && i < dev->mc_count; i++, list = list->next) {
2590 u32 bit = ether_crc(ETH_ALEN, list->dmi_addr) & 0x3f;
2591 filter[bit / 8] |= 1 << (bit % 8);
2592 }
2593 }
2594
2595 gma_write16(hw, port, GM_MC_ADDR_H1,
2596 (u16) filter[0] | ((u16) filter[1] << 8));
2597 gma_write16(hw, port, GM_MC_ADDR_H2,
2598 (u16) filter[2] | ((u16) filter[3] << 8));
2599 gma_write16(hw, port, GM_MC_ADDR_H3,
2600 (u16) filter[4] | ((u16) filter[5] << 8));
2601 gma_write16(hw, port, GM_MC_ADDR_H4,
2602 (u16) filter[6] | ((u16) filter[7] << 8));
2603
2604 gma_write16(hw, port, GM_RX_CTRL, reg);
2605 }
2606
2607 /* Can have one global because blinking is controlled by
2608 * ethtool and that is always under RTNL mutex
2609 */
2610 static void sky2_led(struct sky2_hw *hw, unsigned port, int on)
2611 {
2612 u16 pg;
2613
2614 switch (hw->chip_id) {
2615 case CHIP_ID_YUKON_XL:
2616 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2617 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2618 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
2619 on ? (PHY_M_LEDC_LOS_CTRL(1) |
2620 PHY_M_LEDC_INIT_CTRL(7) |
2621 PHY_M_LEDC_STA1_CTRL(7) |
2622 PHY_M_LEDC_STA0_CTRL(7))
2623 : 0);
2624
2625 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2626 break;
2627
2628 default:
2629 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
2630 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
2631 on ? PHY_M_LED_MO_DUP(MO_LED_ON) |
2632 PHY_M_LED_MO_10(MO_LED_ON) |
2633 PHY_M_LED_MO_100(MO_LED_ON) |
2634 PHY_M_LED_MO_1000(MO_LED_ON) |
2635 PHY_M_LED_MO_RX(MO_LED_ON)
2636 : PHY_M_LED_MO_DUP(MO_LED_OFF) |
2637 PHY_M_LED_MO_10(MO_LED_OFF) |
2638 PHY_M_LED_MO_100(MO_LED_OFF) |
2639 PHY_M_LED_MO_1000(MO_LED_OFF) |
2640 PHY_M_LED_MO_RX(MO_LED_OFF));
2641
2642 }
2643 }
2644
2645 /* blink LED's for finding board */
2646 static int sky2_phys_id(struct net_device *dev, u32 data)
2647 {
2648 struct sky2_port *sky2 = netdev_priv(dev);
2649 struct sky2_hw *hw = sky2->hw;
2650 unsigned port = sky2->port;
2651 u16 ledctrl, ledover = 0;
2652 long ms;
2653 int interrupted;
2654 int onoff = 1;
2655
2656 if (!data || data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ))
2657 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT);
2658 else
2659 ms = data * 1000;
2660
2661 /* save initial values */
2662 spin_lock_bh(&sky2->phy_lock);
2663 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2664 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2665 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2666 ledctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
2667 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2668 } else {
2669 ledctrl = gm_phy_read(hw, port, PHY_MARV_LED_CTRL);
2670 ledover = gm_phy_read(hw, port, PHY_MARV_LED_OVER);
2671 }
2672
2673 interrupted = 0;
2674 while (!interrupted && ms > 0) {
2675 sky2_led(hw, port, onoff);
2676 onoff = !onoff;
2677
2678 spin_unlock_bh(&sky2->phy_lock);
2679 interrupted = msleep_interruptible(250);
2680 spin_lock_bh(&sky2->phy_lock);
2681
2682 ms -= 250;
2683 }
2684
2685 /* resume regularly scheduled programming */
2686 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2687 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2688 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2689 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ledctrl);
2690 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2691 } else {
2692 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
2693 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
2694 }
2695 spin_unlock_bh(&sky2->phy_lock);
2696
2697 return 0;
2698 }
2699
2700 static void sky2_get_pauseparam(struct net_device *dev,
2701 struct ethtool_pauseparam *ecmd)
2702 {
2703 struct sky2_port *sky2 = netdev_priv(dev);
2704
2705 ecmd->tx_pause = sky2->tx_pause;
2706 ecmd->rx_pause = sky2->rx_pause;
2707 ecmd->autoneg = sky2->autoneg;
2708 }
2709
2710 static int sky2_set_pauseparam(struct net_device *dev,
2711 struct ethtool_pauseparam *ecmd)
2712 {
2713 struct sky2_port *sky2 = netdev_priv(dev);
2714 int err = 0;
2715
2716 sky2->autoneg = ecmd->autoneg;
2717 sky2->tx_pause = ecmd->tx_pause != 0;
2718 sky2->rx_pause = ecmd->rx_pause != 0;
2719
2720 sky2_phy_reinit(sky2);
2721
2722 return err;
2723 }
2724
2725 static int sky2_get_coalesce(struct net_device *dev,
2726 struct ethtool_coalesce *ecmd)
2727 {
2728 struct sky2_port *sky2 = netdev_priv(dev);
2729 struct sky2_hw *hw = sky2->hw;
2730
2731 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
2732 ecmd->tx_coalesce_usecs = 0;
2733 else {
2734 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
2735 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
2736 }
2737 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
2738
2739 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
2740 ecmd->rx_coalesce_usecs = 0;
2741 else {
2742 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
2743 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
2744 }
2745 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
2746
2747 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
2748 ecmd->rx_coalesce_usecs_irq = 0;
2749 else {
2750 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
2751 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
2752 }
2753
2754 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
2755
2756 return 0;
2757 }
2758
2759 /* Note: this affect both ports */
2760 static int sky2_set_coalesce(struct net_device *dev,
2761 struct ethtool_coalesce *ecmd)
2762 {
2763 struct sky2_port *sky2 = netdev_priv(dev);
2764 struct sky2_hw *hw = sky2->hw;
2765 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
2766
2767 if (ecmd->tx_coalesce_usecs > tmax ||
2768 ecmd->rx_coalesce_usecs > tmax ||
2769 ecmd->rx_coalesce_usecs_irq > tmax)
2770 return -EINVAL;
2771
2772 if (ecmd->tx_max_coalesced_frames >= TX_RING_SIZE-1)
2773 return -EINVAL;
2774 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
2775 return -EINVAL;
2776 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
2777 return -EINVAL;
2778
2779 if (ecmd->tx_coalesce_usecs == 0)
2780 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
2781 else {
2782 sky2_write32(hw, STAT_TX_TIMER_INI,
2783 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
2784 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2785 }
2786 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
2787
2788 if (ecmd->rx_coalesce_usecs == 0)
2789 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
2790 else {
2791 sky2_write32(hw, STAT_LEV_TIMER_INI,
2792 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
2793 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2794 }
2795 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
2796
2797 if (ecmd->rx_coalesce_usecs_irq == 0)
2798 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
2799 else {
2800 sky2_write32(hw, STAT_ISR_TIMER_INI,
2801 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
2802 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2803 }
2804 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
2805 return 0;
2806 }
2807
2808 static void sky2_get_ringparam(struct net_device *dev,
2809 struct ethtool_ringparam *ering)
2810 {
2811 struct sky2_port *sky2 = netdev_priv(dev);
2812
2813 ering->rx_max_pending = RX_MAX_PENDING;
2814 ering->rx_mini_max_pending = 0;
2815 ering->rx_jumbo_max_pending = 0;
2816 ering->tx_max_pending = TX_RING_SIZE - 1;
2817
2818 ering->rx_pending = sky2->rx_pending;
2819 ering->rx_mini_pending = 0;
2820 ering->rx_jumbo_pending = 0;
2821 ering->tx_pending = sky2->tx_pending;
2822 }
2823
2824 static int sky2_set_ringparam(struct net_device *dev,
2825 struct ethtool_ringparam *ering)
2826 {
2827 struct sky2_port *sky2 = netdev_priv(dev);
2828 int err = 0;
2829
2830 if (ering->rx_pending > RX_MAX_PENDING ||
2831 ering->rx_pending < 8 ||
2832 ering->tx_pending < MAX_SKB_TX_LE ||
2833 ering->tx_pending > TX_RING_SIZE - 1)
2834 return -EINVAL;
2835
2836 if (netif_running(dev))
2837 sky2_down(dev);
2838
2839 sky2->rx_pending = ering->rx_pending;
2840 sky2->tx_pending = ering->tx_pending;
2841
2842 if (netif_running(dev)) {
2843 err = sky2_up(dev);
2844 if (err)
2845 dev_close(dev);
2846 else
2847 sky2_set_multicast(dev);
2848 }
2849
2850 return err;
2851 }
2852
2853 static int sky2_get_regs_len(struct net_device *dev)
2854 {
2855 return 0x4000;
2856 }
2857
2858 /*
2859 * Returns copy of control register region
2860 * Note: access to the RAM address register set will cause timeouts.
2861 */
2862 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
2863 void *p)
2864 {
2865 const struct sky2_port *sky2 = netdev_priv(dev);
2866 const void __iomem *io = sky2->hw->regs;
2867
2868 BUG_ON(regs->len < B3_RI_WTO_R1);
2869 regs->version = 1;
2870 memset(p, 0, regs->len);
2871
2872 memcpy_fromio(p, io, B3_RAM_ADDR);
2873
2874 memcpy_fromio(p + B3_RI_WTO_R1,
2875 io + B3_RI_WTO_R1,
2876 regs->len - B3_RI_WTO_R1);
2877 }
2878
2879 static struct ethtool_ops sky2_ethtool_ops = {
2880 .get_settings = sky2_get_settings,
2881 .set_settings = sky2_set_settings,
2882 .get_drvinfo = sky2_get_drvinfo,
2883 .get_msglevel = sky2_get_msglevel,
2884 .set_msglevel = sky2_set_msglevel,
2885 .nway_reset = sky2_nway_reset,
2886 .get_regs_len = sky2_get_regs_len,
2887 .get_regs = sky2_get_regs,
2888 .get_link = ethtool_op_get_link,
2889 .get_sg = ethtool_op_get_sg,
2890 .set_sg = ethtool_op_set_sg,
2891 .get_tx_csum = ethtool_op_get_tx_csum,
2892 .set_tx_csum = ethtool_op_set_tx_csum,
2893 .get_tso = ethtool_op_get_tso,
2894 .set_tso = ethtool_op_set_tso,
2895 .get_rx_csum = sky2_get_rx_csum,
2896 .set_rx_csum = sky2_set_rx_csum,
2897 .get_strings = sky2_get_strings,
2898 .get_coalesce = sky2_get_coalesce,
2899 .set_coalesce = sky2_set_coalesce,
2900 .get_ringparam = sky2_get_ringparam,
2901 .set_ringparam = sky2_set_ringparam,
2902 .get_pauseparam = sky2_get_pauseparam,
2903 .set_pauseparam = sky2_set_pauseparam,
2904 .phys_id = sky2_phys_id,
2905 .get_stats_count = sky2_get_stats_count,
2906 .get_ethtool_stats = sky2_get_ethtool_stats,
2907 .get_perm_addr = ethtool_op_get_perm_addr,
2908 };
2909
2910 /* Initialize network device */
2911 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
2912 unsigned port, int highmem)
2913 {
2914 struct sky2_port *sky2;
2915 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
2916
2917 if (!dev) {
2918 printk(KERN_ERR "sky2 etherdev alloc failed");
2919 return NULL;
2920 }
2921
2922 SET_MODULE_OWNER(dev);
2923 SET_NETDEV_DEV(dev, &hw->pdev->dev);
2924 dev->irq = hw->pdev->irq;
2925 dev->open = sky2_up;
2926 dev->stop = sky2_down;
2927 dev->do_ioctl = sky2_ioctl;
2928 dev->hard_start_xmit = sky2_xmit_frame;
2929 dev->get_stats = sky2_get_stats;
2930 dev->set_multicast_list = sky2_set_multicast;
2931 dev->set_mac_address = sky2_set_mac_address;
2932 dev->change_mtu = sky2_change_mtu;
2933 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
2934 dev->tx_timeout = sky2_tx_timeout;
2935 dev->watchdog_timeo = TX_WATCHDOG;
2936 if (port == 0)
2937 dev->poll = sky2_poll;
2938 dev->weight = NAPI_WEIGHT;
2939 #ifdef CONFIG_NET_POLL_CONTROLLER
2940 dev->poll_controller = sky2_netpoll;
2941 #endif
2942
2943 sky2 = netdev_priv(dev);
2944 sky2->netdev = dev;
2945 sky2->hw = hw;
2946 sky2->msg_enable = netif_msg_init(debug, default_msg);
2947
2948 spin_lock_init(&sky2->tx_lock);
2949 /* Auto speed and flow control */
2950 sky2->autoneg = AUTONEG_ENABLE;
2951 sky2->tx_pause = 1;
2952 sky2->rx_pause = 1;
2953 sky2->duplex = -1;
2954 sky2->speed = -1;
2955 sky2->advertising = sky2_supported_modes(hw);
2956
2957 /* Receive checksum disabled for Yukon XL
2958 * because of observed problems with incorrect
2959 * values when multiple packets are received in one interrupt
2960 */
2961 sky2->rx_csum = (hw->chip_id != CHIP_ID_YUKON_XL);
2962
2963 spin_lock_init(&sky2->phy_lock);
2964 sky2->tx_pending = TX_DEF_PENDING;
2965 sky2->rx_pending = RX_DEF_PENDING;
2966 sky2->rx_bufsize = sky2_buf_size(ETH_DATA_LEN);
2967
2968 hw->dev[port] = dev;
2969
2970 sky2->port = port;
2971
2972 dev->features |= NETIF_F_LLTX;
2973 if (hw->chip_id != CHIP_ID_YUKON_EC_U)
2974 dev->features |= NETIF_F_TSO;
2975 if (highmem)
2976 dev->features |= NETIF_F_HIGHDMA;
2977 dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
2978
2979 #ifdef SKY2_VLAN_TAG_USED
2980 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
2981 dev->vlan_rx_register = sky2_vlan_rx_register;
2982 dev->vlan_rx_kill_vid = sky2_vlan_rx_kill_vid;
2983 #endif
2984
2985 /* read the mac address */
2986 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
2987 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
2988
2989 /* device is off until link detection */
2990 netif_carrier_off(dev);
2991 netif_stop_queue(dev);
2992
2993 return dev;
2994 }
2995
2996 static void __devinit sky2_show_addr(struct net_device *dev)
2997 {
2998 const struct sky2_port *sky2 = netdev_priv(dev);
2999
3000 if (netif_msg_probe(sky2))
3001 printk(KERN_INFO PFX "%s: addr %02x:%02x:%02x:%02x:%02x:%02x\n",
3002 dev->name,
3003 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
3004 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
3005 }
3006
3007 /* Handle software interrupt used during MSI test */
3008 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id,
3009 struct pt_regs *regs)
3010 {
3011 struct sky2_hw *hw = dev_id;
3012 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
3013
3014 if (status == 0)
3015 return IRQ_NONE;
3016
3017 if (status & Y2_IS_IRQ_SW) {
3018 hw->msi_detected = 1;
3019 wake_up(&hw->msi_wait);
3020 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3021 }
3022 sky2_write32(hw, B0_Y2_SP_ICR, 2);
3023
3024 return IRQ_HANDLED;
3025 }
3026
3027 /* Test interrupt path by forcing a a software IRQ */
3028 static int __devinit sky2_test_msi(struct sky2_hw *hw)
3029 {
3030 struct pci_dev *pdev = hw->pdev;
3031 int err;
3032
3033 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
3034
3035 err = request_irq(pdev->irq, sky2_test_intr, SA_SHIRQ, DRV_NAME, hw);
3036 if (err) {
3037 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3038 pci_name(pdev), pdev->irq);
3039 return err;
3040 }
3041
3042 init_waitqueue_head (&hw->msi_wait);
3043
3044 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
3045 wmb();
3046
3047 wait_event_timeout(hw->msi_wait, hw->msi_detected, HZ/10);
3048
3049 if (!hw->msi_detected) {
3050 /* MSI test failed, go back to INTx mode */
3051 printk(KERN_WARNING PFX "%s: No interrupt was generated using MSI, "
3052 "switching to INTx mode. Please report this failure to "
3053 "the PCI maintainer and include system chipset information.\n",
3054 pci_name(pdev));
3055
3056 err = -EOPNOTSUPP;
3057 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
3058 }
3059
3060 sky2_write32(hw, B0_IMSK, 0);
3061
3062 free_irq(pdev->irq, hw);
3063
3064 return err;
3065 }
3066
3067 static int __devinit sky2_probe(struct pci_dev *pdev,
3068 const struct pci_device_id *ent)
3069 {
3070 struct net_device *dev, *dev1 = NULL;
3071 struct sky2_hw *hw;
3072 int err, pm_cap, using_dac = 0;
3073
3074 err = pci_enable_device(pdev);
3075 if (err) {
3076 printk(KERN_ERR PFX "%s cannot enable PCI device\n",
3077 pci_name(pdev));
3078 goto err_out;
3079 }
3080
3081 err = pci_request_regions(pdev, DRV_NAME);
3082 if (err) {
3083 printk(KERN_ERR PFX "%s cannot obtain PCI resources\n",
3084 pci_name(pdev));
3085 goto err_out;
3086 }
3087
3088 pci_set_master(pdev);
3089
3090 /* Find power-management capability. */
3091 pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
3092 if (pm_cap == 0) {
3093 printk(KERN_ERR PFX "Cannot find PowerManagement capability, "
3094 "aborting.\n");
3095 err = -EIO;
3096 goto err_out_free_regions;
3097 }
3098
3099 if (sizeof(dma_addr_t) > sizeof(u32) &&
3100 !(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
3101 using_dac = 1;
3102 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3103 if (err < 0) {
3104 printk(KERN_ERR PFX "%s unable to obtain 64 bit DMA "
3105 "for consistent allocations\n", pci_name(pdev));
3106 goto err_out_free_regions;
3107 }
3108
3109 } else {
3110 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
3111 if (err) {
3112 printk(KERN_ERR PFX "%s no usable DMA configuration\n",
3113 pci_name(pdev));
3114 goto err_out_free_regions;
3115 }
3116 }
3117
3118 err = -ENOMEM;
3119 hw = kzalloc(sizeof(*hw), GFP_KERNEL);
3120 if (!hw) {
3121 printk(KERN_ERR PFX "%s: cannot allocate hardware struct\n",
3122 pci_name(pdev));
3123 goto err_out_free_regions;
3124 }
3125
3126 hw->pdev = pdev;
3127
3128 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
3129 if (!hw->regs) {
3130 printk(KERN_ERR PFX "%s: cannot map device registers\n",
3131 pci_name(pdev));
3132 goto err_out_free_hw;
3133 }
3134 hw->pm_cap = pm_cap;
3135
3136 #ifdef __BIG_ENDIAN
3137 /* byte swap descriptors in hardware */
3138 {
3139 u32 reg;
3140
3141 reg = sky2_pci_read32(hw, PCI_DEV_REG2);
3142 reg |= PCI_REV_DESC;
3143 sky2_pci_write32(hw, PCI_DEV_REG2, reg);
3144 }
3145 #endif
3146
3147 /* ring for status responses */
3148 hw->st_le = pci_alloc_consistent(hw->pdev, STATUS_LE_BYTES,
3149 &hw->st_dma);
3150 if (!hw->st_le)
3151 goto err_out_iounmap;
3152
3153 err = sky2_reset(hw);
3154 if (err)
3155 goto err_out_iounmap;
3156
3157 printk(KERN_INFO PFX "v%s addr 0x%lx irq %d Yukon-%s (0x%x) rev %d\n",
3158 DRV_VERSION, pci_resource_start(pdev, 0), pdev->irq,
3159 yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
3160 hw->chip_id, hw->chip_rev);
3161
3162 dev = sky2_init_netdev(hw, 0, using_dac);
3163 if (!dev)
3164 goto err_out_free_pci;
3165
3166 err = register_netdev(dev);
3167 if (err) {
3168 printk(KERN_ERR PFX "%s: cannot register net device\n",
3169 pci_name(pdev));
3170 goto err_out_free_netdev;
3171 }
3172
3173 sky2_show_addr(dev);
3174
3175 if (hw->ports > 1 && (dev1 = sky2_init_netdev(hw, 1, using_dac))) {
3176 if (register_netdev(dev1) == 0)
3177 sky2_show_addr(dev1);
3178 else {
3179 /* Failure to register second port need not be fatal */
3180 printk(KERN_WARNING PFX
3181 "register of second port failed\n");
3182 hw->dev[1] = NULL;
3183 free_netdev(dev1);
3184 }
3185 }
3186
3187 if (!disable_msi && pci_enable_msi(pdev) == 0) {
3188 err = sky2_test_msi(hw);
3189 if (err == -EOPNOTSUPP)
3190 pci_disable_msi(pdev);
3191 else if (err)
3192 goto err_out_unregister;
3193 }
3194
3195 err = request_irq(pdev->irq, sky2_intr, SA_SHIRQ, DRV_NAME, hw);
3196 if (err) {
3197 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3198 pci_name(pdev), pdev->irq);
3199 goto err_out_unregister;
3200 }
3201
3202 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3203
3204 pci_set_drvdata(pdev, hw);
3205
3206 return 0;
3207
3208 err_out_unregister:
3209 pci_disable_msi(pdev);
3210 if (dev1) {
3211 unregister_netdev(dev1);
3212 free_netdev(dev1);
3213 }
3214 unregister_netdev(dev);
3215 err_out_free_netdev:
3216 free_netdev(dev);
3217 err_out_free_pci:
3218 sky2_write8(hw, B0_CTST, CS_RST_SET);
3219 pci_free_consistent(hw->pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3220 err_out_iounmap:
3221 iounmap(hw->regs);
3222 err_out_free_hw:
3223 kfree(hw);
3224 err_out_free_regions:
3225 pci_release_regions(pdev);
3226 pci_disable_device(pdev);
3227 err_out:
3228 return err;
3229 }
3230
3231 static void __devexit sky2_remove(struct pci_dev *pdev)
3232 {
3233 struct sky2_hw *hw = pci_get_drvdata(pdev);
3234 struct net_device *dev0, *dev1;
3235
3236 if (!hw)
3237 return;
3238
3239 dev0 = hw->dev[0];
3240 dev1 = hw->dev[1];
3241 if (dev1)
3242 unregister_netdev(dev1);
3243 unregister_netdev(dev0);
3244
3245 sky2_write32(hw, B0_IMSK, 0);
3246 sky2_set_power_state(hw, PCI_D3hot);
3247 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
3248 sky2_write8(hw, B0_CTST, CS_RST_SET);
3249 sky2_read8(hw, B0_CTST);
3250
3251 free_irq(pdev->irq, hw);
3252 pci_disable_msi(pdev);
3253 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3254 pci_release_regions(pdev);
3255 pci_disable_device(pdev);
3256
3257 if (dev1)
3258 free_netdev(dev1);
3259 free_netdev(dev0);
3260 iounmap(hw->regs);
3261 kfree(hw);
3262
3263 pci_set_drvdata(pdev, NULL);
3264 }
3265
3266 #ifdef CONFIG_PM
3267 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
3268 {
3269 struct sky2_hw *hw = pci_get_drvdata(pdev);
3270 int i;
3271
3272 for (i = 0; i < 2; i++) {
3273 struct net_device *dev = hw->dev[i];
3274
3275 if (dev) {
3276 if (!netif_running(dev))
3277 continue;
3278
3279 sky2_down(dev);
3280 netif_device_detach(dev);
3281 }
3282 }
3283
3284 return sky2_set_power_state(hw, pci_choose_state(pdev, state));
3285 }
3286
3287 static int sky2_resume(struct pci_dev *pdev)
3288 {
3289 struct sky2_hw *hw = pci_get_drvdata(pdev);
3290 int i, err;
3291
3292 pci_restore_state(pdev);
3293 pci_enable_wake(pdev, PCI_D0, 0);
3294 err = sky2_set_power_state(hw, PCI_D0);
3295 if (err)
3296 goto out;
3297
3298 err = sky2_reset(hw);
3299 if (err)
3300 goto out;
3301
3302 for (i = 0; i < 2; i++) {
3303 struct net_device *dev = hw->dev[i];
3304 if (dev && netif_running(dev)) {
3305 netif_device_attach(dev);
3306 err = sky2_up(dev);
3307 if (err) {
3308 printk(KERN_ERR PFX "%s: could not up: %d\n",
3309 dev->name, err);
3310 dev_close(dev);
3311 break;
3312 }
3313 }
3314 }
3315 out:
3316 return err;
3317 }
3318 #endif
3319
3320 static struct pci_driver sky2_driver = {
3321 .name = DRV_NAME,
3322 .id_table = sky2_id_table,
3323 .probe = sky2_probe,
3324 .remove = __devexit_p(sky2_remove),
3325 #ifdef CONFIG_PM
3326 .suspend = sky2_suspend,
3327 .resume = sky2_resume,
3328 #endif
3329 };
3330
3331 static int __init sky2_init_module(void)
3332 {
3333 return pci_register_driver(&sky2_driver);
3334 }
3335
3336 static void __exit sky2_cleanup_module(void)
3337 {
3338 pci_unregister_driver(&sky2_driver);
3339 }
3340
3341 module_init(sky2_init_module);
3342 module_exit(sky2_cleanup_module);
3343
3344 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
3345 MODULE_AUTHOR("Stephen Hemminger <shemminger@osdl.org>");
3346 MODULE_LICENSE("GPL");
3347 MODULE_VERSION(DRV_VERSION);
Linux kernel - Deliverables
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