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[PATCH] sky2: don't bother clearing status ring elements
[linux-2.6/zen-sources.git] / drivers / net / sky2.c
blob3c5d00403e5e073a1cca2d285c7bd0826c9205d4
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 /*
27 * TOTEST
28 * - speed setting
29 * - suspend/resume
30 */
31
32 #include <linux/config.h>
33 #include <linux/crc32.h>
34 #include <linux/kernel.h>
35 #include <linux/version.h>
36 #include <linux/module.h>
37 #include <linux/netdevice.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/etherdevice.h>
40 #include <linux/ethtool.h>
41 #include <linux/pci.h>
42 #include <linux/ip.h>
43 #include <linux/tcp.h>
44 #include <linux/in.h>
45 #include <linux/delay.h>
46 #include <linux/workqueue.h>
47 #include <linux/if_vlan.h>
48 #include <linux/prefetch.h>
49 #include <linux/mii.h>
50
51 #include <asm/irq.h>
52
53 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
54 #define SKY2_VLAN_TAG_USED 1
55 #endif
56
57 #include "sky2.h"
58
59 #define DRV_NAME "sky2"
60 #define DRV_VERSION "0.12"
61 #define PFX DRV_NAME " "
62
63 /*
64 * The Yukon II chipset takes 64 bit command blocks (called list elements)
65 * that are organized into three (receive, transmit, status) different rings
66 * similar to Tigon3. A transmit can require several elements;
67 * a receive requires one (or two if using 64 bit dma).
68 */
69
70 #define is_ec_a1(hw) \
71 unlikely((hw)->chip_id == CHIP_ID_YUKON_EC && \
72 (hw)->chip_rev == CHIP_REV_YU_EC_A1)
73
74 #define RX_LE_SIZE 512
75 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
76 #define RX_MAX_PENDING (RX_LE_SIZE/2 - 2)
77 #define RX_DEF_PENDING RX_MAX_PENDING
78 #define RX_SKB_ALIGN 8
79
80 #define TX_RING_SIZE 512
81 #define TX_DEF_PENDING (TX_RING_SIZE - 1)
82 #define TX_MIN_PENDING 64
83 #define MAX_SKB_TX_LE (4 + 2*MAX_SKB_FRAGS)
84
85 #define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
86 #define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
87 #define ETH_JUMBO_MTU 9000
88 #define TX_WATCHDOG (5 * HZ)
89 #define NAPI_WEIGHT 64
90 #define PHY_RETRIES 1000
91
92 static const u32 default_msg =
93 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
94 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
95 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN | NETIF_MSG_INTR;
96
97 static int debug = -1; /* defaults above */
98 module_param(debug, int, 0);
99 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
100
101 static int copybreak __read_mostly = 256;
102 module_param(copybreak, int, 0);
103 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
104
105 static const struct pci_device_id sky2_id_table[] = {
106 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) },
107 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) },
108 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) },
109 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b01) },
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) },
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) },
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) },
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) },
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) },
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) },
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) },
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) },
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) },
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) },
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) },
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) },
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) },
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) },
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) },
125 { 0 }
126 };
127
128 MODULE_DEVICE_TABLE(pci, sky2_id_table);
129
130 /* Avoid conditionals by using array */
131 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
132 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
133
134 /* This driver supports yukon2 chipset only */
135 static const char *yukon2_name[] = {
136 "XL", /* 0xb3 */
137 "EC Ultra", /* 0xb4 */
138 "UNKNOWN", /* 0xb5 */
139 "EC", /* 0xb6 */
140 "FE", /* 0xb7 */
141 };
142
143 /* Access to external PHY */
144 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
145 {
146 int i;
147
148 gma_write16(hw, port, GM_SMI_DATA, val);
149 gma_write16(hw, port, GM_SMI_CTRL,
150 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
151
152 for (i = 0; i < PHY_RETRIES; i++) {
153 if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
154 return 0;
155 udelay(1);
156 }
157
158 printk(KERN_WARNING PFX "%s: phy write timeout\n", hw->dev[port]->name);
159 return -ETIMEDOUT;
160 }
161
162 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
163 {
164 int i;
165
166 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
167 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
168
169 for (i = 0; i < PHY_RETRIES; i++) {
170 if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL) {
171 *val = gma_read16(hw, port, GM_SMI_DATA);
172 return 0;
173 }
174
175 udelay(1);
176 }
177
178 return -ETIMEDOUT;
179 }
180
181 static u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
182 {
183 u16 v;
184
185 if (__gm_phy_read(hw, port, reg, &v) != 0)
186 printk(KERN_WARNING PFX "%s: phy read timeout\n", hw->dev[port]->name);
187 return v;
188 }
189
190 static int sky2_set_power_state(struct sky2_hw *hw, pci_power_t state)
191 {
192 u16 power_control;
193 u32 reg1;
194 int vaux;
195 int ret = 0;
196
197 pr_debug("sky2_set_power_state %d\n", state);
198 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
199
200 pci_read_config_word(hw->pdev, hw->pm_cap + PCI_PM_PMC, &power_control);
201 vaux = (sky2_read8(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
202 (power_control & PCI_PM_CAP_PME_D3cold);
203
204 pci_read_config_word(hw->pdev, hw->pm_cap + PCI_PM_CTRL, &power_control);
205
206 power_control |= PCI_PM_CTRL_PME_STATUS;
207 power_control &= ~(PCI_PM_CTRL_STATE_MASK);
208
209 switch (state) {
210 case PCI_D0:
211 /* switch power to VCC (WA for VAUX problem) */
212 sky2_write8(hw, B0_POWER_CTRL,
213 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
214
215 /* disable Core Clock Division, */
216 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
217
218 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
219 /* enable bits are inverted */
220 sky2_write8(hw, B2_Y2_CLK_GATE,
221 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
222 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
223 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
224 else
225 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
226
227 /* Turn off phy power saving */
228 pci_read_config_dword(hw->pdev, PCI_DEV_REG1, &reg1);
229 reg1 &= ~(PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
230
231 /* looks like this XL is back asswards .. */
232 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1) {
233 reg1 |= PCI_Y2_PHY1_COMA;
234 if (hw->ports > 1)
235 reg1 |= PCI_Y2_PHY2_COMA;
236 }
237 pci_write_config_dword(hw->pdev, PCI_DEV_REG1, reg1);
238 break;
239
240 case PCI_D3hot:
241 case PCI_D3cold:
242 /* Turn on phy power saving */
243 pci_read_config_dword(hw->pdev, PCI_DEV_REG1, &reg1);
244 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
245 reg1 &= ~(PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
246 else
247 reg1 |= (PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD);
248 pci_write_config_dword(hw->pdev, PCI_DEV_REG1, reg1);
249
250 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
251 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
252 else
253 /* enable bits are inverted */
254 sky2_write8(hw, B2_Y2_CLK_GATE,
255 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
256 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
257 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
258
259 /* switch power to VAUX */
260 if (vaux && state != PCI_D3cold)
261 sky2_write8(hw, B0_POWER_CTRL,
262 (PC_VAUX_ENA | PC_VCC_ENA |
263 PC_VAUX_ON | PC_VCC_OFF));
264 break;
265 default:
266 printk(KERN_ERR PFX "Unknown power state %d\n", state);
267 ret = -1;
268 }
269
270 pci_write_config_byte(hw->pdev, hw->pm_cap + PCI_PM_CTRL, power_control);
271 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
272 return ret;
273 }
274
275 static void sky2_phy_reset(struct sky2_hw *hw, unsigned port)
276 {
277 u16 reg;
278
279 /* disable all GMAC IRQ's */
280 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
281 /* disable PHY IRQs */
282 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
283
284 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
285 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
286 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
287 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
288
289 reg = gma_read16(hw, port, GM_RX_CTRL);
290 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
291 gma_write16(hw, port, GM_RX_CTRL, reg);
292 }
293
294 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
295 {
296 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
297 u16 ctrl, ct1000, adv, pg, ledctrl, ledover;
298
299 if (sky2->autoneg == AUTONEG_ENABLE && hw->chip_id != CHIP_ID_YUKON_XL) {
300 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
301
302 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
303 PHY_M_EC_MAC_S_MSK);
304 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
305
306 if (hw->chip_id == CHIP_ID_YUKON_EC)
307 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
308 else
309 ectrl |= PHY_M_EC_M_DSC(2) | PHY_M_EC_S_DSC(3);
310
311 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
312 }
313
314 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
315 if (hw->copper) {
316 if (hw->chip_id == CHIP_ID_YUKON_FE) {
317 /* enable automatic crossover */
318 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
319 } else {
320 /* disable energy detect */
321 ctrl &= ~PHY_M_PC_EN_DET_MSK;
322
323 /* enable automatic crossover */
324 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
325
326 if (sky2->autoneg == AUTONEG_ENABLE &&
327 hw->chip_id == CHIP_ID_YUKON_XL) {
328 ctrl &= ~PHY_M_PC_DSC_MSK;
329 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
330 }
331 }
332 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
333 } else {
334 /* workaround for deviation #4.88 (CRC errors) */
335 /* disable Automatic Crossover */
336
337 ctrl &= ~PHY_M_PC_MDIX_MSK;
338 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
339
340 if (hw->chip_id == CHIP_ID_YUKON_XL) {
341 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
342 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
343 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
344 ctrl &= ~PHY_M_MAC_MD_MSK;
345 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
346 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
347
348 /* select page 1 to access Fiber registers */
349 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
350 }
351 }
352
353 ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
354 if (sky2->autoneg == AUTONEG_DISABLE)
355 ctrl &= ~PHY_CT_ANE;
356 else
357 ctrl |= PHY_CT_ANE;
358
359 ctrl |= PHY_CT_RESET;
360 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
361
362 ctrl = 0;
363 ct1000 = 0;
364 adv = PHY_AN_CSMA;
365
366 if (sky2->autoneg == AUTONEG_ENABLE) {
367 if (hw->copper) {
368 if (sky2->advertising & ADVERTISED_1000baseT_Full)
369 ct1000 |= PHY_M_1000C_AFD;
370 if (sky2->advertising & ADVERTISED_1000baseT_Half)
371 ct1000 |= PHY_M_1000C_AHD;
372 if (sky2->advertising & ADVERTISED_100baseT_Full)
373 adv |= PHY_M_AN_100_FD;
374 if (sky2->advertising & ADVERTISED_100baseT_Half)
375 adv |= PHY_M_AN_100_HD;
376 if (sky2->advertising & ADVERTISED_10baseT_Full)
377 adv |= PHY_M_AN_10_FD;
378 if (sky2->advertising & ADVERTISED_10baseT_Half)
379 adv |= PHY_M_AN_10_HD;
380 } else /* special defines for FIBER (88E1011S only) */
381 adv |= PHY_M_AN_1000X_AHD | PHY_M_AN_1000X_AFD;
382
383 /* Set Flow-control capabilities */
384 if (sky2->tx_pause && sky2->rx_pause)
385 adv |= PHY_AN_PAUSE_CAP; /* symmetric */
386 else if (sky2->rx_pause && !sky2->tx_pause)
387 adv |= PHY_AN_PAUSE_ASYM | PHY_AN_PAUSE_CAP;
388 else if (!sky2->rx_pause && sky2->tx_pause)
389 adv |= PHY_AN_PAUSE_ASYM; /* local */
390
391 /* Restart Auto-negotiation */
392 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
393 } else {
394 /* forced speed/duplex settings */
395 ct1000 = PHY_M_1000C_MSE;
396
397 if (sky2->duplex == DUPLEX_FULL)
398 ctrl |= PHY_CT_DUP_MD;
399
400 switch (sky2->speed) {
401 case SPEED_1000:
402 ctrl |= PHY_CT_SP1000;
403 break;
404 case SPEED_100:
405 ctrl |= PHY_CT_SP100;
406 break;
407 }
408
409 ctrl |= PHY_CT_RESET;
410 }
411
412 if (hw->chip_id != CHIP_ID_YUKON_FE)
413 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
414
415 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
416 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
417
418 /* Setup Phy LED's */
419 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
420 ledover = 0;
421
422 switch (hw->chip_id) {
423 case CHIP_ID_YUKON_FE:
424 /* on 88E3082 these bits are at 11..9 (shifted left) */
425 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
426
427 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
428
429 /* delete ACT LED control bits */
430 ctrl &= ~PHY_M_FELP_LED1_MSK;
431 /* change ACT LED control to blink mode */
432 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
433 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
434 break;
435
436 case CHIP_ID_YUKON_XL:
437 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
438
439 /* select page 3 to access LED control register */
440 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
441
442 /* set LED Function Control register */
443 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
444 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
445 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
446 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
447
448 /* set Polarity Control register */
449 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
450 (PHY_M_POLC_LS1_P_MIX(4) |
451 PHY_M_POLC_IS0_P_MIX(4) |
452 PHY_M_POLC_LOS_CTRL(2) |
453 PHY_M_POLC_INIT_CTRL(2) |
454 PHY_M_POLC_STA1_CTRL(2) |
455 PHY_M_POLC_STA0_CTRL(2)));
456
457 /* restore page register */
458 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
459 break;
460
461 default:
462 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
463 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
464 /* turn off the Rx LED (LED_RX) */
465 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
466 }
467
468 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
469
470 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
471 /* turn on 100 Mbps LED (LED_LINK100) */
472 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
473 }
474
475 if (ledover)
476 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
477
478 /* Enable phy interrupt on auto-negotiation complete (or link up) */
479 if (sky2->autoneg == AUTONEG_ENABLE)
480 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
481 else
482 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
483 }
484
485 /* Force a renegotiation */
486 static void sky2_phy_reinit(struct sky2_port *sky2)
487 {
488 down(&sky2->phy_sema);
489 sky2_phy_init(sky2->hw, sky2->port);
490 up(&sky2->phy_sema);
491 }
492
493 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
494 {
495 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
496 u16 reg;
497 int i;
498 const u8 *addr = hw->dev[port]->dev_addr;
499
500 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
501 sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR|GPC_ENA_PAUSE);
502
503 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
504
505 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
506 /* WA DEV_472 -- looks like crossed wires on port 2 */
507 /* clear GMAC 1 Control reset */
508 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
509 do {
510 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
511 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
512 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
513 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
514 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
515 }
516
517 if (sky2->autoneg == AUTONEG_DISABLE) {
518 reg = gma_read16(hw, port, GM_GP_CTRL);
519 reg |= GM_GPCR_AU_ALL_DIS;
520 gma_write16(hw, port, GM_GP_CTRL, reg);
521 gma_read16(hw, port, GM_GP_CTRL);
522
523 switch (sky2->speed) {
524 case SPEED_1000:
525 reg |= GM_GPCR_SPEED_1000;
526 /* fallthru */
527 case SPEED_100:
528 reg |= GM_GPCR_SPEED_100;
529 }
530
531 if (sky2->duplex == DUPLEX_FULL)
532 reg |= GM_GPCR_DUP_FULL;
533 } else
534 reg = GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100 | GM_GPCR_DUP_FULL;
535
536 if (!sky2->tx_pause && !sky2->rx_pause) {
537 sky2_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
538 reg |=
539 GM_GPCR_FC_TX_DIS | GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
540 } else if (sky2->tx_pause && !sky2->rx_pause) {
541 /* disable Rx flow-control */
542 reg |= GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
543 }
544
545 gma_write16(hw, port, GM_GP_CTRL, reg);
546
547 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
548
549 down(&sky2->phy_sema);
550 sky2_phy_init(hw, port);
551 up(&sky2->phy_sema);
552
553 /* MIB clear */
554 reg = gma_read16(hw, port, GM_PHY_ADDR);
555 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
556
557 for (i = 0; i < GM_MIB_CNT_SIZE; i++)
558 gma_read16(hw, port, GM_MIB_CNT_BASE + 8 * i);
559 gma_write16(hw, port, GM_PHY_ADDR, reg);
560
561 /* transmit control */
562 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
563
564 /* receive control reg: unicast + multicast + no FCS */
565 gma_write16(hw, port, GM_RX_CTRL,
566 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
567
568 /* transmit flow control */
569 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
570
571 /* transmit parameter */
572 gma_write16(hw, port, GM_TX_PARAM,
573 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
574 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
575 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
576 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
577
578 /* serial mode register */
579 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
580 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
581
582 if (hw->dev[port]->mtu > ETH_DATA_LEN)
583 reg |= GM_SMOD_JUMBO_ENA;
584
585 gma_write16(hw, port, GM_SERIAL_MODE, reg);
586
587 /* virtual address for data */
588 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
589
590 /* physical address: used for pause frames */
591 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
592
593 /* ignore counter overflows */
594 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
595 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
596 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
597
598 /* Configure Rx MAC FIFO */
599 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
600 sky2_write16(hw, SK_REG(port, RX_GMF_CTRL_T),
601 GMF_RX_CTRL_DEF);
602
603 /* Flush Rx MAC FIFO on any flow control or error */
604 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
605
606 /* Set threshold to 0xa (64 bytes)
607 * ASF disabled so no need to do WA dev #4.30
608 */
609 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF);
610
611 /* Configure Tx MAC FIFO */
612 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
613 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
614
615 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
616 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
617 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
618 if (hw->dev[port]->mtu > ETH_DATA_LEN) {
619 /* set Tx GMAC FIFO Almost Empty Threshold */
620 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR), 0x180);
621 /* Disable Store & Forward mode for TX */
622 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
623 }
624 }
625
626 }
627
628 /* Assign Ram Buffer allocation.
629 * start and end are in units of 4k bytes
630 * ram registers are in units of 64bit words
631 */
632 static void sky2_ramset(struct sky2_hw *hw, u16 q, u8 startk, u8 endk)
633 {
634 u32 start, end;
635
636 start = startk * 4096/8;
637 end = (endk * 4096/8) - 1;
638
639 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
640 sky2_write32(hw, RB_ADDR(q, RB_START), start);
641 sky2_write32(hw, RB_ADDR(q, RB_END), end);
642 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
643 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
644
645 if (q == Q_R1 || q == Q_R2) {
646 u32 space = (endk - startk) * 4096/8;
647 u32 tp = space - space/4;
648
649 /* On receive queue's set the thresholds
650 * give receiver priority when > 3/4 full
651 * send pause when down to 2K
652 */
653 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
654 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
655
656 tp = space - 2048/8;
657 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
658 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
659 } else {
660 /* Enable store & forward on Tx queue's because
661 * Tx FIFO is only 1K on Yukon
662 */
663 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
664 }
665
666 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
667 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
668 }
669
670 /* Setup Bus Memory Interface */
671 static void sky2_qset(struct sky2_hw *hw, u16 q)
672 {
673 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
674 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
675 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
676 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
677 }
678
679 /* Setup prefetch unit registers. This is the interface between
680 * hardware and driver list elements
681 */
682 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
683 u64 addr, u32 last)
684 {
685 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
686 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
687 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
688 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
689 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
690 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
691
692 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
693 }
694
695 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
696 {
697 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
698
699 sky2->tx_prod = (sky2->tx_prod + 1) % TX_RING_SIZE;
700 return le;
701 }
702
703 /*
704 * This is a workaround code taken from SysKonnect sk98lin driver
705 * to deal with chip bug on Yukon EC rev 0 in the wraparound case.
706 */
707 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q,
708 u16 idx, u16 *last, u16 size)
709 {
710 wmb();
711 if (is_ec_a1(hw) && idx < *last) {
712 u16 hwget = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
713
714 if (hwget == 0) {
715 /* Start prefetching again */
716 sky2_write8(hw, Y2_QADDR(q, PREF_UNIT_FIFO_WM), 0xe0);
717 goto setnew;
718 }
719
720 if (hwget == size - 1) {
721 /* set watermark to one list element */
722 sky2_write8(hw, Y2_QADDR(q, PREF_UNIT_FIFO_WM), 8);
723
724 /* set put index to first list element */
725 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), 0);
726 } else /* have hardware go to end of list */
727 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX),
728 size - 1);
729 } else {
730 setnew:
731 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
732 }
733 *last = idx;
734 mmiowb();
735 }
736
737
738 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
739 {
740 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
741 sky2->rx_put = (sky2->rx_put + 1) % RX_LE_SIZE;
742 return le;
743 }
744
745 /* Return high part of DMA address (could be 32 or 64 bit) */
746 static inline u32 high32(dma_addr_t a)
747 {
748 return (a >> 16) >> 16;
749 }
750
751 /* Build description to hardware about buffer */
752 static inline void sky2_rx_add(struct sky2_port *sky2, dma_addr_t map)
753 {
754 struct sky2_rx_le *le;
755 u32 hi = high32(map);
756 u16 len = sky2->rx_bufsize;
757
758 if (sky2->rx_addr64 != hi) {
759 le = sky2_next_rx(sky2);
760 le->addr = cpu_to_le32(hi);
761 le->ctrl = 0;
762 le->opcode = OP_ADDR64 | HW_OWNER;
763 sky2->rx_addr64 = high32(map + len);
764 }
765
766 le = sky2_next_rx(sky2);
767 le->addr = cpu_to_le32((u32) map);
768 le->length = cpu_to_le16(len);
769 le->ctrl = 0;
770 le->opcode = OP_PACKET | HW_OWNER;
771 }
772
773
774 /* Tell chip where to start receive checksum.
775 * Actually has two checksums, but set both same to avoid possible byte
776 * order problems.
777 */
778 static void rx_set_checksum(struct sky2_port *sky2)
779 {
780 struct sky2_rx_le *le;
781
782 le = sky2_next_rx(sky2);
783 le->addr = (ETH_HLEN << 16) | ETH_HLEN;
784 le->ctrl = 0;
785 le->opcode = OP_TCPSTART | HW_OWNER;
786
787 sky2_write32(sky2->hw,
788 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
789 sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
790
791 }
792
793 /*
794 * The RX Stop command will not work for Yukon-2 if the BMU does not
795 * reach the end of packet and since we can't make sure that we have
796 * incoming data, we must reset the BMU while it is not doing a DMA
797 * transfer. Since it is possible that the RX path is still active,
798 * the RX RAM buffer will be stopped first, so any possible incoming
799 * data will not trigger a DMA. After the RAM buffer is stopped, the
800 * BMU is polled until any DMA in progress is ended and only then it
801 * will be reset.
802 */
803 static void sky2_rx_stop(struct sky2_port *sky2)
804 {
805 struct sky2_hw *hw = sky2->hw;
806 unsigned rxq = rxqaddr[sky2->port];
807 int i;
808
809 /* disable the RAM Buffer receive queue */
810 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
811
812 for (i = 0; i < 0xffff; i++)
813 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
814 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
815 goto stopped;
816
817 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
818 sky2->netdev->name);
819 stopped:
820 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
821
822 /* reset the Rx prefetch unit */
823 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
824 }
825
826 /* Clean out receive buffer area, assumes receiver hardware stopped */
827 static void sky2_rx_clean(struct sky2_port *sky2)
828 {
829 unsigned i;
830
831 memset(sky2->rx_le, 0, RX_LE_BYTES);
832 for (i = 0; i < sky2->rx_pending; i++) {
833 struct ring_info *re = sky2->rx_ring + i;
834
835 if (re->skb) {
836 pci_unmap_single(sky2->hw->pdev,
837 re->mapaddr, sky2->rx_bufsize,
838 PCI_DMA_FROMDEVICE);
839 kfree_skb(re->skb);
840 re->skb = NULL;
841 }
842 }
843 }
844
845 /* Basic MII support */
846 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
847 {
848 struct mii_ioctl_data *data = if_mii(ifr);
849 struct sky2_port *sky2 = netdev_priv(dev);
850 struct sky2_hw *hw = sky2->hw;
851 int err = -EOPNOTSUPP;
852
853 if (!netif_running(dev))
854 return -ENODEV; /* Phy still in reset */
855
856 switch(cmd) {
857 case SIOCGMIIPHY:
858 data->phy_id = PHY_ADDR_MARV;
859
860 /* fallthru */
861 case SIOCGMIIREG: {
862 u16 val = 0;
863
864 down(&sky2->phy_sema);
865 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
866 up(&sky2->phy_sema);
867
868 data->val_out = val;
869 break;
870 }
871
872 case SIOCSMIIREG:
873 if (!capable(CAP_NET_ADMIN))
874 return -EPERM;
875
876 down(&sky2->phy_sema);
877 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
878 data->val_in);
879 up(&sky2->phy_sema);
880 break;
881 }
882 return err;
883 }
884
885 #ifdef SKY2_VLAN_TAG_USED
886 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
887 {
888 struct sky2_port *sky2 = netdev_priv(dev);
889 struct sky2_hw *hw = sky2->hw;
890 u16 port = sky2->port;
891
892 spin_lock(&sky2->tx_lock);
893
894 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_ON);
895 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_ON);
896 sky2->vlgrp = grp;
897
898 spin_unlock(&sky2->tx_lock);
899 }
900
901 static void sky2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
902 {
903 struct sky2_port *sky2 = netdev_priv(dev);
904 struct sky2_hw *hw = sky2->hw;
905 u16 port = sky2->port;
906
907 spin_lock(&sky2->tx_lock);
908
909 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_OFF);
910 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_OFF);
911 if (sky2->vlgrp)
912 sky2->vlgrp->vlan_devices[vid] = NULL;
913
914 spin_unlock(&sky2->tx_lock);
915 }
916 #endif
917
918 /*
919 * It appears the hardware has a bug in the FIFO logic that
920 * cause it to hang if the FIFO gets overrun and the receive buffer
921 * is not aligned. ALso alloc_skb() won't align properly if slab
922 * debugging is enabled.
923 */
924 static inline struct sk_buff *sky2_alloc_skb(unsigned int size, gfp_t gfp_mask)
925 {
926 struct sk_buff *skb;
927
928 skb = alloc_skb(size + RX_SKB_ALIGN, gfp_mask);
929 if (likely(skb)) {
930 unsigned long p = (unsigned long) skb->data;
931 skb_reserve(skb,
932 ((p + RX_SKB_ALIGN - 1) & ~(RX_SKB_ALIGN - 1)) - p);
933 }
934
935 return skb;
936 }
937
938 /*
939 * Allocate and setup receiver buffer pool.
940 * In case of 64 bit dma, there are 2X as many list elements
941 * available as ring entries
942 * and need to reserve one list element so we don't wrap around.
943 */
944 static int sky2_rx_start(struct sky2_port *sky2)
945 {
946 struct sky2_hw *hw = sky2->hw;
947 unsigned rxq = rxqaddr[sky2->port];
948 int i;
949
950 sky2->rx_put = sky2->rx_next = 0;
951 sky2_qset(hw, rxq);
952 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
953
954 rx_set_checksum(sky2);
955 for (i = 0; i < sky2->rx_pending; i++) {
956 struct ring_info *re = sky2->rx_ring + i;
957
958 re->skb = sky2_alloc_skb(sky2->rx_bufsize, GFP_KERNEL);
959 if (!re->skb)
960 goto nomem;
961
962 re->mapaddr = pci_map_single(hw->pdev, re->skb->data,
963 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
964 sky2_rx_add(sky2, re->mapaddr);
965 }
966
967 /* Tell chip about available buffers */
968 sky2_write16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX), sky2->rx_put);
969 sky2->rx_last_put = sky2_read16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX));
970 return 0;
971 nomem:
972 sky2_rx_clean(sky2);
973 return -ENOMEM;
974 }
975
976 /* Bring up network interface. */
977 static int sky2_up(struct net_device *dev)
978 {
979 struct sky2_port *sky2 = netdev_priv(dev);
980 struct sky2_hw *hw = sky2->hw;
981 unsigned port = sky2->port;
982 u32 ramsize, rxspace;
983 int err = -ENOMEM;
984
985 if (netif_msg_ifup(sky2))
986 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
987
988 /* must be power of 2 */
989 sky2->tx_le = pci_alloc_consistent(hw->pdev,
990 TX_RING_SIZE *
991 sizeof(struct sky2_tx_le),
992 &sky2->tx_le_map);
993 if (!sky2->tx_le)
994 goto err_out;
995
996 sky2->tx_ring = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info),
997 GFP_KERNEL);
998 if (!sky2->tx_ring)
999 goto err_out;
1000 sky2->tx_prod = sky2->tx_cons = 0;
1001
1002 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1003 &sky2->rx_le_map);
1004 if (!sky2->rx_le)
1005 goto err_out;
1006 memset(sky2->rx_le, 0, RX_LE_BYTES);
1007
1008 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct ring_info),
1009 GFP_KERNEL);
1010 if (!sky2->rx_ring)
1011 goto err_out;
1012
1013 sky2_mac_init(hw, port);
1014
1015 /* Determine available ram buffer space (in 4K blocks).
1016 * Note: not sure about the FE setting below yet
1017 */
1018 if (hw->chip_id == CHIP_ID_YUKON_FE)
1019 ramsize = 4;
1020 else
1021 ramsize = sky2_read8(hw, B2_E_0);
1022
1023 /* Give transmitter one third (rounded up) */
1024 rxspace = ramsize - (ramsize + 2) / 3;
1025
1026 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1027 sky2_ramset(hw, txqaddr[port], rxspace, ramsize);
1028
1029 /* Make sure SyncQ is disabled */
1030 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1031 RB_RST_SET);
1032
1033 sky2_qset(hw, txqaddr[port]);
1034 if (hw->chip_id == CHIP_ID_YUKON_EC_U)
1035 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), 0x1a0);
1036
1037
1038 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1039 TX_RING_SIZE - 1);
1040
1041 err = sky2_rx_start(sky2);
1042 if (err)
1043 goto err_out;
1044
1045 /* Enable interrupts from phy/mac for port */
1046 hw->intr_mask |= (port == 0) ? Y2_IS_PORT_1 : Y2_IS_PORT_2;
1047 sky2_write32(hw, B0_IMSK, hw->intr_mask);
1048 return 0;
1049
1050 err_out:
1051 if (sky2->rx_le) {
1052 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1053 sky2->rx_le, sky2->rx_le_map);
1054 sky2->rx_le = NULL;
1055 }
1056 if (sky2->tx_le) {
1057 pci_free_consistent(hw->pdev,
1058 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1059 sky2->tx_le, sky2->tx_le_map);
1060 sky2->tx_le = NULL;
1061 }
1062 kfree(sky2->tx_ring);
1063 kfree(sky2->rx_ring);
1064
1065 sky2->tx_ring = NULL;
1066 sky2->rx_ring = NULL;
1067 return err;
1068 }
1069
1070 /* Modular subtraction in ring */
1071 static inline int tx_dist(unsigned tail, unsigned head)
1072 {
1073 return (head - tail) % TX_RING_SIZE;
1074 }
1075
1076 /* Number of list elements available for next tx */
1077 static inline int tx_avail(const struct sky2_port *sky2)
1078 {
1079 return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
1080 }
1081
1082 /* Estimate of number of transmit list elements required */
1083 static inline unsigned tx_le_req(const struct sk_buff *skb)
1084 {
1085 unsigned count;
1086
1087 count = sizeof(dma_addr_t) / sizeof(u32);
1088 count += skb_shinfo(skb)->nr_frags * count;
1089
1090 if (skb_shinfo(skb)->tso_size)
1091 ++count;
1092
1093 if (skb->ip_summed == CHECKSUM_HW)
1094 ++count;
1095
1096 return count;
1097 }
1098
1099 /*
1100 * Put one packet in ring for transmit.
1101 * A single packet can generate multiple list elements, and
1102 * the number of ring elements will probably be less than the number
1103 * of list elements used.
1104 *
1105 * No BH disabling for tx_lock here (like tg3)
1106 */
1107 static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1108 {
1109 struct sky2_port *sky2 = netdev_priv(dev);
1110 struct sky2_hw *hw = sky2->hw;
1111 struct sky2_tx_le *le = NULL;
1112 struct tx_ring_info *re;
1113 unsigned i, len;
1114 dma_addr_t mapping;
1115 u32 addr64;
1116 u16 mss;
1117 u8 ctrl;
1118
1119 if (!spin_trylock(&sky2->tx_lock))
1120 return NETDEV_TX_LOCKED;
1121
1122 if (unlikely(tx_avail(sky2) < tx_le_req(skb))) {
1123 /* There is a known but harmless race with lockless tx
1124 * and netif_stop_queue.
1125 */
1126 if (!netif_queue_stopped(dev)) {
1127 netif_stop_queue(dev);
1128 printk(KERN_WARNING PFX "%s: ring full when queue awake!\n",
1129 dev->name);
1130 }
1131 spin_unlock(&sky2->tx_lock);
1132
1133 return NETDEV_TX_BUSY;
1134 }
1135
1136 if (unlikely(netif_msg_tx_queued(sky2)))
1137 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1138 dev->name, sky2->tx_prod, skb->len);
1139
1140 len = skb_headlen(skb);
1141 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1142 addr64 = high32(mapping);
1143
1144 re = sky2->tx_ring + sky2->tx_prod;
1145
1146 /* Send high bits if changed or crosses boundary */
1147 if (addr64 != sky2->tx_addr64 || high32(mapping + len) != sky2->tx_addr64) {
1148 le = get_tx_le(sky2);
1149 le->tx.addr = cpu_to_le32(addr64);
1150 le->ctrl = 0;
1151 le->opcode = OP_ADDR64 | HW_OWNER;
1152 sky2->tx_addr64 = high32(mapping + len);
1153 }
1154
1155 /* Check for TCP Segmentation Offload */
1156 mss = skb_shinfo(skb)->tso_size;
1157 if (mss != 0) {
1158 /* just drop the packet if non-linear expansion fails */
1159 if (skb_header_cloned(skb) &&
1160 pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) {
1161 dev_kfree_skb_any(skb);
1162 goto out_unlock;
1163 }
1164
1165 mss += ((skb->h.th->doff - 5) * 4); /* TCP options */
1166 mss += (skb->nh.iph->ihl * 4) + sizeof(struct tcphdr);
1167 mss += ETH_HLEN;
1168 }
1169
1170 if (mss != sky2->tx_last_mss) {
1171 le = get_tx_le(sky2);
1172 le->tx.tso.size = cpu_to_le16(mss);
1173 le->tx.tso.rsvd = 0;
1174 le->opcode = OP_LRGLEN | HW_OWNER;
1175 le->ctrl = 0;
1176 sky2->tx_last_mss = mss;
1177 }
1178
1179 ctrl = 0;
1180 #ifdef SKY2_VLAN_TAG_USED
1181 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1182 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1183 if (!le) {
1184 le = get_tx_le(sky2);
1185 le->tx.addr = 0;
1186 le->opcode = OP_VLAN|HW_OWNER;
1187 le->ctrl = 0;
1188 } else
1189 le->opcode |= OP_VLAN;
1190 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1191 ctrl |= INS_VLAN;
1192 }
1193 #endif
1194
1195 /* Handle TCP checksum offload */
1196 if (skb->ip_summed == CHECKSUM_HW) {
1197 u16 hdr = skb->h.raw - skb->data;
1198 u16 offset = hdr + skb->csum;
1199
1200 ctrl = CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1201 if (skb->nh.iph->protocol == IPPROTO_UDP)
1202 ctrl |= UDPTCP;
1203
1204 le = get_tx_le(sky2);
1205 le->tx.csum.start = cpu_to_le16(hdr);
1206 le->tx.csum.offset = cpu_to_le16(offset);
1207 le->length = 0; /* initial checksum value */
1208 le->ctrl = 1; /* one packet */
1209 le->opcode = OP_TCPLISW | HW_OWNER;
1210 }
1211
1212 le = get_tx_le(sky2);
1213 le->tx.addr = cpu_to_le32((u32) mapping);
1214 le->length = cpu_to_le16(len);
1215 le->ctrl = ctrl;
1216 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1217
1218 /* Record the transmit mapping info */
1219 re->skb = skb;
1220 pci_unmap_addr_set(re, mapaddr, mapping);
1221
1222 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1223 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1224 struct tx_ring_info *fre;
1225
1226 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1227 frag->size, PCI_DMA_TODEVICE);
1228 addr64 = (mapping >> 16) >> 16;
1229 if (addr64 != sky2->tx_addr64) {
1230 le = get_tx_le(sky2);
1231 le->tx.addr = cpu_to_le32(addr64);
1232 le->ctrl = 0;
1233 le->opcode = OP_ADDR64 | HW_OWNER;
1234 sky2->tx_addr64 = addr64;
1235 }
1236
1237 le = get_tx_le(sky2);
1238 le->tx.addr = cpu_to_le32((u32) mapping);
1239 le->length = cpu_to_le16(frag->size);
1240 le->ctrl = ctrl;
1241 le->opcode = OP_BUFFER | HW_OWNER;
1242
1243 fre = sky2->tx_ring
1244 + ((re - sky2->tx_ring) + i + 1) % TX_RING_SIZE;
1245 pci_unmap_addr_set(fre, mapaddr, mapping);
1246 }
1247
1248 re->idx = sky2->tx_prod;
1249 le->ctrl |= EOP;
1250
1251 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod,
1252 &sky2->tx_last_put, TX_RING_SIZE);
1253
1254 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1255 netif_stop_queue(dev);
1256
1257 out_unlock:
1258 spin_unlock(&sky2->tx_lock);
1259
1260 dev->trans_start = jiffies;
1261 return NETDEV_TX_OK;
1262 }
1263
1264 /*
1265 * Free ring elements from starting at tx_cons until "done"
1266 *
1267 * NB: the hardware will tell us about partial completion of multi-part
1268 * buffers; these are deferred until completion.
1269 */
1270 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1271 {
1272 struct net_device *dev = sky2->netdev;
1273 struct pci_dev *pdev = sky2->hw->pdev;
1274 u16 nxt, put;
1275 unsigned i;
1276
1277 BUG_ON(done >= TX_RING_SIZE);
1278
1279 if (unlikely(netif_msg_tx_done(sky2)))
1280 printk(KERN_DEBUG "%s: tx done, up to %u\n",
1281 dev->name, done);
1282
1283 for (put = sky2->tx_cons; put != done; put = nxt) {
1284 struct tx_ring_info *re = sky2->tx_ring + put;
1285 struct sk_buff *skb = re->skb;
1286
1287 nxt = re->idx;
1288 BUG_ON(nxt >= TX_RING_SIZE);
1289 prefetch(sky2->tx_ring + nxt);
1290
1291 /* Check for partial status */
1292 if (tx_dist(put, done) < tx_dist(put, nxt))
1293 break;
1294
1295 skb = re->skb;
1296 pci_unmap_single(pdev, pci_unmap_addr(re, mapaddr),
1297 skb_headlen(skb), PCI_DMA_TODEVICE);
1298
1299 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1300 struct tx_ring_info *fre;
1301 fre = sky2->tx_ring + (put + i + 1) % TX_RING_SIZE;
1302 pci_unmap_page(pdev, pci_unmap_addr(fre, mapaddr),
1303 skb_shinfo(skb)->frags[i].size,
1304 PCI_DMA_TODEVICE);
1305 }
1306
1307 dev_kfree_skb_any(skb);
1308 }
1309
1310 spin_lock(&sky2->tx_lock);
1311 sky2->tx_cons = put;
1312 if (netif_queue_stopped(dev) && tx_avail(sky2) > MAX_SKB_TX_LE)
1313 netif_wake_queue(dev);
1314 spin_unlock(&sky2->tx_lock);
1315 }
1316
1317 /* Cleanup all untransmitted buffers, assume transmitter not running */
1318 static void sky2_tx_clean(struct sky2_port *sky2)
1319 {
1320 sky2_tx_complete(sky2, sky2->tx_prod);
1321 }
1322
1323 /* Network shutdown */
1324 static int sky2_down(struct net_device *dev)
1325 {
1326 struct sky2_port *sky2 = netdev_priv(dev);
1327 struct sky2_hw *hw = sky2->hw;
1328 unsigned port = sky2->port;
1329 u16 ctrl;
1330
1331 /* Never really got started! */
1332 if (!sky2->tx_le)
1333 return 0;
1334
1335 if (netif_msg_ifdown(sky2))
1336 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1337
1338 /* Stop more packets from being queued */
1339 netif_stop_queue(dev);
1340
1341 /* Disable port IRQ */
1342 local_irq_disable();
1343 hw->intr_mask &= ~((sky2->port == 0) ? Y2_IS_IRQ_PHY1 : Y2_IS_IRQ_PHY2);
1344 sky2_write32(hw, B0_IMSK, hw->intr_mask);
1345 local_irq_enable();
1346
1347 flush_scheduled_work();
1348
1349 sky2_phy_reset(hw, port);
1350
1351 /* Stop transmitter */
1352 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1353 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1354
1355 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1356 RB_RST_SET | RB_DIS_OP_MD);
1357
1358 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1359 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1360 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1361
1362 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1363
1364 /* Workaround shared GMAC reset */
1365 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1366 && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1367 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1368
1369 /* Disable Force Sync bit and Enable Alloc bit */
1370 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1371 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1372
1373 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1374 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1375 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1376
1377 /* Reset the PCI FIFO of the async Tx queue */
1378 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1379 BMU_RST_SET | BMU_FIFO_RST);
1380
1381 /* Reset the Tx prefetch units */
1382 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1383 PREF_UNIT_RST_SET);
1384
1385 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1386
1387 sky2_rx_stop(sky2);
1388
1389 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1390 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1391
1392 /* turn off LED's */
1393 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1394
1395 synchronize_irq(hw->pdev->irq);
1396
1397 sky2_tx_clean(sky2);
1398 sky2_rx_clean(sky2);
1399
1400 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1401 sky2->rx_le, sky2->rx_le_map);
1402 kfree(sky2->rx_ring);
1403
1404 pci_free_consistent(hw->pdev,
1405 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1406 sky2->tx_le, sky2->tx_le_map);
1407 kfree(sky2->tx_ring);
1408
1409 sky2->tx_le = NULL;
1410 sky2->rx_le = NULL;
1411
1412 sky2->rx_ring = NULL;
1413 sky2->tx_ring = NULL;
1414
1415 return 0;
1416 }
1417
1418 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1419 {
1420 if (!hw->copper)
1421 return SPEED_1000;
1422
1423 if (hw->chip_id == CHIP_ID_YUKON_FE)
1424 return (aux & PHY_M_PS_SPEED_100) ? SPEED_100 : SPEED_10;
1425
1426 switch (aux & PHY_M_PS_SPEED_MSK) {
1427 case PHY_M_PS_SPEED_1000:
1428 return SPEED_1000;
1429 case PHY_M_PS_SPEED_100:
1430 return SPEED_100;
1431 default:
1432 return SPEED_10;
1433 }
1434 }
1435
1436 static void sky2_link_up(struct sky2_port *sky2)
1437 {
1438 struct sky2_hw *hw = sky2->hw;
1439 unsigned port = sky2->port;
1440 u16 reg;
1441
1442 /* Enable Transmit FIFO Underrun */
1443 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
1444
1445 reg = gma_read16(hw, port, GM_GP_CTRL);
1446 if (sky2->duplex == DUPLEX_FULL || sky2->autoneg == AUTONEG_ENABLE)
1447 reg |= GM_GPCR_DUP_FULL;
1448
1449 /* enable Rx/Tx */
1450 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1451 gma_write16(hw, port, GM_GP_CTRL, reg);
1452 gma_read16(hw, port, GM_GP_CTRL);
1453
1454 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1455
1456 netif_carrier_on(sky2->netdev);
1457 netif_wake_queue(sky2->netdev);
1458
1459 /* Turn on link LED */
1460 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1461 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1462
1463 if (hw->chip_id == CHIP_ID_YUKON_XL) {
1464 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
1465
1466 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
1467 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
1468 PHY_M_LEDC_INIT_CTRL(sky2->speed ==
1469 SPEED_10 ? 7 : 0) |
1470 PHY_M_LEDC_STA1_CTRL(sky2->speed ==
1471 SPEED_100 ? 7 : 0) |
1472 PHY_M_LEDC_STA0_CTRL(sky2->speed ==
1473 SPEED_1000 ? 7 : 0));
1474 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
1475 }
1476
1477 if (netif_msg_link(sky2))
1478 printk(KERN_INFO PFX
1479 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1480 sky2->netdev->name, sky2->speed,
1481 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1482 (sky2->tx_pause && sky2->rx_pause) ? "both" :
1483 sky2->tx_pause ? "tx" : sky2->rx_pause ? "rx" : "none");
1484 }
1485
1486 static void sky2_link_down(struct sky2_port *sky2)
1487 {
1488 struct sky2_hw *hw = sky2->hw;
1489 unsigned port = sky2->port;
1490 u16 reg;
1491
1492 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1493
1494 reg = gma_read16(hw, port, GM_GP_CTRL);
1495 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1496 gma_write16(hw, port, GM_GP_CTRL, reg);
1497 gma_read16(hw, port, GM_GP_CTRL); /* PCI post */
1498
1499 if (sky2->rx_pause && !sky2->tx_pause) {
1500 /* restore Asymmetric Pause bit */
1501 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV,
1502 gm_phy_read(hw, port, PHY_MARV_AUNE_ADV)
1503 | PHY_M_AN_ASP);
1504 }
1505
1506 netif_carrier_off(sky2->netdev);
1507 netif_stop_queue(sky2->netdev);
1508
1509 /* Turn on link LED */
1510 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1511
1512 if (netif_msg_link(sky2))
1513 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
1514 sky2_phy_init(hw, port);
1515 }
1516
1517 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
1518 {
1519 struct sky2_hw *hw = sky2->hw;
1520 unsigned port = sky2->port;
1521 u16 lpa;
1522
1523 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
1524
1525 if (lpa & PHY_M_AN_RF) {
1526 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
1527 return -1;
1528 }
1529
1530 if (hw->chip_id != CHIP_ID_YUKON_FE &&
1531 gm_phy_read(hw, port, PHY_MARV_1000T_STAT) & PHY_B_1000S_MSF) {
1532 printk(KERN_ERR PFX "%s: master/slave fault",
1533 sky2->netdev->name);
1534 return -1;
1535 }
1536
1537 if (!(aux & PHY_M_PS_SPDUP_RES)) {
1538 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
1539 sky2->netdev->name);
1540 return -1;
1541 }
1542
1543 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1544
1545 sky2->speed = sky2_phy_speed(hw, aux);
1546
1547 /* Pause bits are offset (9..8) */
1548 if (hw->chip_id == CHIP_ID_YUKON_XL)
1549 aux >>= 6;
1550
1551 sky2->rx_pause = (aux & PHY_M_PS_RX_P_EN) != 0;
1552 sky2->tx_pause = (aux & PHY_M_PS_TX_P_EN) != 0;
1553
1554 if ((sky2->tx_pause || sky2->rx_pause)
1555 && !(sky2->speed < SPEED_1000 && sky2->duplex == DUPLEX_HALF))
1556 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
1557 else
1558 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1559
1560 return 0;
1561 }
1562
1563 /*
1564 * Interrupt from PHY are handled outside of interrupt context
1565 * because accessing phy registers requires spin wait which might
1566 * cause excess interrupt latency.
1567 */
1568 static void sky2_phy_task(void *arg)
1569 {
1570 struct sky2_port *sky2 = arg;
1571 struct sky2_hw *hw = sky2->hw;
1572 u16 istatus, phystat;
1573
1574 down(&sky2->phy_sema);
1575 istatus = gm_phy_read(hw, sky2->port, PHY_MARV_INT_STAT);
1576 phystat = gm_phy_read(hw, sky2->port, PHY_MARV_PHY_STAT);
1577
1578 if (netif_msg_intr(sky2))
1579 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
1580 sky2->netdev->name, istatus, phystat);
1581
1582 if (istatus & PHY_M_IS_AN_COMPL) {
1583 if (sky2_autoneg_done(sky2, phystat) == 0)
1584 sky2_link_up(sky2);
1585 goto out;
1586 }
1587
1588 if (istatus & PHY_M_IS_LSP_CHANGE)
1589 sky2->speed = sky2_phy_speed(hw, phystat);
1590
1591 if (istatus & PHY_M_IS_DUP_CHANGE)
1592 sky2->duplex =
1593 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1594
1595 if (istatus & PHY_M_IS_LST_CHANGE) {
1596 if (phystat & PHY_M_PS_LINK_UP)
1597 sky2_link_up(sky2);
1598 else
1599 sky2_link_down(sky2);
1600 }
1601 out:
1602 up(&sky2->phy_sema);
1603
1604 local_irq_disable();
1605 hw->intr_mask |= (sky2->port == 0) ? Y2_IS_IRQ_PHY1 : Y2_IS_IRQ_PHY2;
1606 sky2_write32(hw, B0_IMSK, hw->intr_mask);
1607 local_irq_enable();
1608 }
1609
1610 static void sky2_tx_timeout(struct net_device *dev)
1611 {
1612 struct sky2_port *sky2 = netdev_priv(dev);
1613 struct sky2_hw *hw = sky2->hw;
1614 unsigned txq = txqaddr[sky2->port];
1615
1616 if (netif_msg_timer(sky2))
1617 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
1618
1619 netif_stop_queue(dev);
1620
1621 sky2_write32(hw, Q_ADDR(txq, Q_CSR), BMU_STOP);
1622 sky2_read32(hw, Q_ADDR(txq, Q_CSR));
1623
1624 sky2_write32(hw, Y2_QADDR(txq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1625
1626 sky2_tx_clean(sky2);
1627
1628 sky2_qset(hw, txq);
1629 sky2_prefetch_init(hw, txq, sky2->tx_le_map, TX_RING_SIZE - 1);
1630
1631 netif_wake_queue(dev);
1632 }
1633
1634
1635 #define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
1636 /* Want receive buffer size to be multiple of 64 bits, and incl room for vlan */
1637 static inline unsigned sky2_buf_size(int mtu)
1638 {
1639 return roundup(mtu + ETH_HLEN + 4, 8);
1640 }
1641
1642 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
1643 {
1644 struct sky2_port *sky2 = netdev_priv(dev);
1645 struct sky2_hw *hw = sky2->hw;
1646 int err;
1647 u16 ctl, mode;
1648
1649 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
1650 return -EINVAL;
1651
1652 if (hw->chip_id == CHIP_ID_YUKON_EC_U && new_mtu > ETH_DATA_LEN)
1653 return -EINVAL;
1654
1655 if (!netif_running(dev)) {
1656 dev->mtu = new_mtu;
1657 return 0;
1658 }
1659
1660 sky2_write32(hw, B0_IMSK, 0);
1661
1662 dev->trans_start = jiffies; /* prevent tx timeout */
1663 netif_stop_queue(dev);
1664 netif_poll_disable(hw->dev[0]);
1665
1666 ctl = gma_read16(hw, sky2->port, GM_GP_CTRL);
1667 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
1668 sky2_rx_stop(sky2);
1669 sky2_rx_clean(sky2);
1670
1671 dev->mtu = new_mtu;
1672 sky2->rx_bufsize = sky2_buf_size(new_mtu);
1673 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
1674 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
1675
1676 if (dev->mtu > ETH_DATA_LEN)
1677 mode |= GM_SMOD_JUMBO_ENA;
1678
1679 gma_write16(hw, sky2->port, GM_SERIAL_MODE, mode);
1680
1681 sky2_write8(hw, RB_ADDR(rxqaddr[sky2->port], RB_CTRL), RB_ENA_OP_MD);
1682
1683 err = sky2_rx_start(sky2);
1684 sky2_write32(hw, B0_IMSK, hw->intr_mask);
1685
1686 if (err)
1687 dev_close(dev);
1688 else {
1689 gma_write16(hw, sky2->port, GM_GP_CTRL, ctl);
1690
1691 netif_poll_enable(hw->dev[0]);
1692 netif_wake_queue(dev);
1693 }
1694
1695 return err;
1696 }
1697
1698 /*
1699 * Receive one packet.
1700 * For small packets or errors, just reuse existing skb.
1701 * For larger packets, get new buffer.
1702 */
1703 static struct sk_buff *sky2_receive(struct sky2_port *sky2,
1704 u16 length, u32 status)
1705 {
1706 struct ring_info *re = sky2->rx_ring + sky2->rx_next;
1707 struct sk_buff *skb = NULL;
1708
1709 if (unlikely(netif_msg_rx_status(sky2)))
1710 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
1711 sky2->netdev->name, sky2->rx_next, status, length);
1712
1713 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
1714 prefetch(sky2->rx_ring + sky2->rx_next);
1715
1716 if (status & GMR_FS_ANY_ERR)
1717 goto error;
1718
1719 if (!(status & GMR_FS_RX_OK))
1720 goto resubmit;
1721
1722 if ((status >> 16) != length || length > sky2->rx_bufsize)
1723 goto oversize;
1724
1725 if (length < copybreak) {
1726 skb = alloc_skb(length + 2, GFP_ATOMIC);
1727 if (!skb)
1728 goto resubmit;
1729
1730 skb_reserve(skb, 2);
1731 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->mapaddr,
1732 length, PCI_DMA_FROMDEVICE);
1733 memcpy(skb->data, re->skb->data, length);
1734 skb->ip_summed = re->skb->ip_summed;
1735 skb->csum = re->skb->csum;
1736 pci_dma_sync_single_for_device(sky2->hw->pdev, re->mapaddr,
1737 length, PCI_DMA_FROMDEVICE);
1738 } else {
1739 struct sk_buff *nskb;
1740
1741 nskb = sky2_alloc_skb(sky2->rx_bufsize, GFP_ATOMIC);
1742 if (!nskb)
1743 goto resubmit;
1744
1745 skb = re->skb;
1746 re->skb = nskb;
1747 pci_unmap_single(sky2->hw->pdev, re->mapaddr,
1748 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
1749 prefetch(skb->data);
1750
1751 re->mapaddr = pci_map_single(sky2->hw->pdev, nskb->data,
1752 sky2->rx_bufsize, PCI_DMA_FROMDEVICE);
1753 }
1754
1755 skb_put(skb, length);
1756 resubmit:
1757 re->skb->ip_summed = CHECKSUM_NONE;
1758 sky2_rx_add(sky2, re->mapaddr);
1759
1760 /* Tell receiver about new buffers. */
1761 sky2_put_idx(sky2->hw, rxqaddr[sky2->port], sky2->rx_put,
1762 &sky2->rx_last_put, RX_LE_SIZE);
1763
1764 return skb;
1765
1766 oversize:
1767 ++sky2->net_stats.rx_over_errors;
1768 goto resubmit;
1769
1770 error:
1771 ++sky2->net_stats.rx_errors;
1772
1773 if (netif_msg_rx_err(sky2))
1774 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
1775 sky2->netdev->name, status, length);
1776
1777 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
1778 sky2->net_stats.rx_length_errors++;
1779 if (status & GMR_FS_FRAGMENT)
1780 sky2->net_stats.rx_frame_errors++;
1781 if (status & GMR_FS_CRC_ERR)
1782 sky2->net_stats.rx_crc_errors++;
1783 if (status & GMR_FS_RX_FF_OV)
1784 sky2->net_stats.rx_fifo_errors++;
1785
1786 goto resubmit;
1787 }
1788
1789 /*
1790 * Check for transmit complete
1791 */
1792 #define TX_NO_STATUS 0xffff
1793
1794 static inline void sky2_tx_check(struct sky2_hw *hw, int port, u16 last)
1795 {
1796 if (last != TX_NO_STATUS) {
1797 struct net_device *dev = hw->dev[port];
1798 if (dev && netif_running(dev)) {
1799 struct sky2_port *sky2 = netdev_priv(dev);
1800 sky2_tx_complete(sky2, last);
1801 }
1802 }
1803 }
1804
1805 /*
1806 * Both ports share the same status interrupt, therefore there is only
1807 * one poll routine.
1808 */
1809 static int sky2_poll(struct net_device *dev0, int *budget)
1810 {
1811 struct sky2_hw *hw = ((struct sky2_port *) netdev_priv(dev0))->hw;
1812 unsigned int to_do = min(dev0->quota, *budget);
1813 unsigned int work_done = 0;
1814 u16 hwidx;
1815 u16 tx_done[2] = { TX_NO_STATUS, TX_NO_STATUS };
1816
1817 hwidx = sky2_read16(hw, STAT_PUT_IDX);
1818 BUG_ON(hwidx >= STATUS_RING_SIZE);
1819 rmb();
1820
1821 while (hwidx != hw->st_idx) {
1822 struct sky2_status_le *le = hw->st_le + hw->st_idx;
1823 struct net_device *dev;
1824 struct sky2_port *sky2;
1825 struct sk_buff *skb;
1826 u32 status;
1827 u16 length;
1828
1829 le = hw->st_le + hw->st_idx;
1830 hw->st_idx = (hw->st_idx + 1) % STATUS_RING_SIZE;
1831 prefetch(hw->st_le + hw->st_idx);
1832
1833 BUG_ON(le->link >= 2);
1834 dev = hw->dev[le->link];
1835 if (dev == NULL || !netif_running(dev))
1836 continue;
1837
1838 sky2 = netdev_priv(dev);
1839 status = le32_to_cpu(le->status);
1840 length = le16_to_cpu(le->length);
1841
1842 switch (le->opcode & ~HW_OWNER) {
1843 case OP_RXSTAT:
1844 skb = sky2_receive(sky2, length, status);
1845 if (!skb)
1846 break;
1847
1848 skb->dev = dev;
1849 skb->protocol = eth_type_trans(skb, dev);
1850 dev->last_rx = jiffies;
1851
1852 #ifdef SKY2_VLAN_TAG_USED
1853 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
1854 vlan_hwaccel_receive_skb(skb,
1855 sky2->vlgrp,
1856 be16_to_cpu(sky2->rx_tag));
1857 } else
1858 #endif
1859 netif_receive_skb(skb);
1860
1861 if (++work_done >= to_do)
1862 goto exit_loop;
1863 break;
1864
1865 #ifdef SKY2_VLAN_TAG_USED
1866 case OP_RXVLAN:
1867 sky2->rx_tag = length;
1868 break;
1869
1870 case OP_RXCHKSVLAN:
1871 sky2->rx_tag = length;
1872 /* fall through */
1873 #endif
1874 case OP_RXCHKS:
1875 skb = sky2->rx_ring[sky2->rx_next].skb;
1876 skb->ip_summed = CHECKSUM_HW;
1877 skb->csum = le16_to_cpu(status);
1878 break;
1879
1880 case OP_TXINDEXLE:
1881 /* TX index reports status for both ports */
1882 tx_done[0] = status & 0xffff;
1883 tx_done[1] = ((status >> 24) & 0xff)
1884 | (u16)(length & 0xf) << 8;
1885 break;
1886
1887 default:
1888 if (net_ratelimit())
1889 printk(KERN_WARNING PFX
1890 "unknown status opcode 0x%x\n", le->opcode);
1891 break;
1892 }
1893 }
1894
1895 exit_loop:
1896 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
1897
1898 sky2_tx_check(hw, 0, tx_done[0]);
1899 sky2_tx_check(hw, 1, tx_done[1]);
1900
1901 if (sky2_read16(hw, STAT_PUT_IDX) == hw->st_idx) {
1902 /* need to restart TX timer */
1903 if (is_ec_a1(hw)) {
1904 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
1905 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
1906 }
1907
1908 netif_rx_complete(dev0);
1909 hw->intr_mask |= Y2_IS_STAT_BMU;
1910 sky2_write32(hw, B0_IMSK, hw->intr_mask);
1911 return 0;
1912 } else {
1913 *budget -= work_done;
1914 dev0->quota -= work_done;
1915 return 1;
1916 }
1917 }
1918
1919 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
1920 {
1921 struct net_device *dev = hw->dev[port];
1922
1923 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
1924 dev->name, status);
1925
1926 if (status & Y2_IS_PAR_RD1) {
1927 printk(KERN_ERR PFX "%s: ram data read parity error\n",
1928 dev->name);
1929 /* Clear IRQ */
1930 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
1931 }
1932
1933 if (status & Y2_IS_PAR_WR1) {
1934 printk(KERN_ERR PFX "%s: ram data write parity error\n",
1935 dev->name);
1936
1937 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
1938 }
1939
1940 if (status & Y2_IS_PAR_MAC1) {
1941 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
1942 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
1943 }
1944
1945 if (status & Y2_IS_PAR_RX1) {
1946 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
1947 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
1948 }
1949
1950 if (status & Y2_IS_TCP_TXA1) {
1951 printk(KERN_ERR PFX "%s: TCP segmentation error\n", dev->name);
1952 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
1953 }
1954 }
1955
1956 static void sky2_hw_intr(struct sky2_hw *hw)
1957 {
1958 u32 status = sky2_read32(hw, B0_HWE_ISRC);
1959
1960 if (status & Y2_IS_TIST_OV)
1961 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
1962
1963 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
1964 u16 pci_err;
1965
1966 pci_read_config_word(hw->pdev, PCI_STATUS, &pci_err);
1967 printk(KERN_ERR PFX "%s: pci hw error (0x%x)\n",
1968 pci_name(hw->pdev), pci_err);
1969
1970 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
1971 pci_write_config_word(hw->pdev, PCI_STATUS,
1972 pci_err | PCI_STATUS_ERROR_BITS);
1973 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
1974 }
1975
1976 if (status & Y2_IS_PCI_EXP) {
1977 /* PCI-Express uncorrectable Error occurred */
1978 u32 pex_err;
1979
1980 pci_read_config_dword(hw->pdev, PEX_UNC_ERR_STAT, &pex_err);
1981
1982 printk(KERN_ERR PFX "%s: pci express error (0x%x)\n",
1983 pci_name(hw->pdev), pex_err);
1984
1985 /* clear the interrupt */
1986 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
1987 pci_write_config_dword(hw->pdev, PEX_UNC_ERR_STAT,
1988 0xffffffffUL);
1989 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
1990
1991 if (pex_err & PEX_FATAL_ERRORS) {
1992 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
1993 hwmsk &= ~Y2_IS_PCI_EXP;
1994 sky2_write32(hw, B0_HWE_IMSK, hwmsk);
1995 }
1996 }
1997
1998 if (status & Y2_HWE_L1_MASK)
1999 sky2_hw_error(hw, 0, status);
2000 status >>= 8;
2001 if (status & Y2_HWE_L1_MASK)
2002 sky2_hw_error(hw, 1, status);
2003 }
2004
2005 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2006 {
2007 struct net_device *dev = hw->dev[port];
2008 struct sky2_port *sky2 = netdev_priv(dev);
2009 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2010
2011 if (netif_msg_intr(sky2))
2012 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2013 dev->name, status);
2014
2015 if (status & GM_IS_RX_FF_OR) {
2016 ++sky2->net_stats.rx_fifo_errors;
2017 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2018 }
2019
2020 if (status & GM_IS_TX_FF_UR) {
2021 ++sky2->net_stats.tx_fifo_errors;
2022 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2023 }
2024 }
2025
2026 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
2027 {
2028 struct net_device *dev = hw->dev[port];
2029 struct sky2_port *sky2 = netdev_priv(dev);
2030
2031 hw->intr_mask &= ~(port == 0 ? Y2_IS_IRQ_PHY1 : Y2_IS_IRQ_PHY2);
2032 sky2_write32(hw, B0_IMSK, hw->intr_mask);
2033 schedule_work(&sky2->phy_task);
2034 }
2035
2036 static irqreturn_t sky2_intr(int irq, void *dev_id, struct pt_regs *regs)
2037 {
2038 struct sky2_hw *hw = dev_id;
2039 struct net_device *dev0 = hw->dev[0];
2040 u32 status;
2041
2042 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2043 if (status == 0 || status == ~0)
2044 return IRQ_NONE;
2045
2046 if (status & Y2_IS_HW_ERR)
2047 sky2_hw_intr(hw);
2048
2049 /* Do NAPI for Rx and Tx status */
2050 if (status & Y2_IS_STAT_BMU) {
2051 hw->intr_mask &= ~Y2_IS_STAT_BMU;
2052 sky2_write32(hw, B0_IMSK, hw->intr_mask);
2053
2054 if (likely(__netif_rx_schedule_prep(dev0))) {
2055 prefetch(&hw->st_le[hw->st_idx]);
2056 __netif_rx_schedule(dev0);
2057 }
2058 }
2059
2060 if (status & Y2_IS_IRQ_PHY1)
2061 sky2_phy_intr(hw, 0);
2062
2063 if (status & Y2_IS_IRQ_PHY2)
2064 sky2_phy_intr(hw, 1);
2065
2066 if (status & Y2_IS_IRQ_MAC1)
2067 sky2_mac_intr(hw, 0);
2068
2069 if (status & Y2_IS_IRQ_MAC2)
2070 sky2_mac_intr(hw, 1);
2071
2072 sky2_write32(hw, B0_Y2_SP_ICR, 2);
2073
2074 sky2_read32(hw, B0_IMSK);
2075
2076 return IRQ_HANDLED;
2077 }
2078
2079 #ifdef CONFIG_NET_POLL_CONTROLLER
2080 static void sky2_netpoll(struct net_device *dev)
2081 {
2082 struct sky2_port *sky2 = netdev_priv(dev);
2083
2084 sky2_intr(sky2->hw->pdev->irq, sky2->hw, NULL);
2085 }
2086 #endif
2087
2088 /* Chip internal frequency for clock calculations */
2089 static inline u32 sky2_mhz(const struct sky2_hw *hw)
2090 {
2091 switch (hw->chip_id) {
2092 case CHIP_ID_YUKON_EC:
2093 case CHIP_ID_YUKON_EC_U:
2094 return 125; /* 125 Mhz */
2095 case CHIP_ID_YUKON_FE:
2096 return 100; /* 100 Mhz */
2097 default: /* YUKON_XL */
2098 return 156; /* 156 Mhz */
2099 }
2100 }
2101
2102 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2103 {
2104 return sky2_mhz(hw) * us;
2105 }
2106
2107 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2108 {
2109 return clk / sky2_mhz(hw);
2110 }
2111
2112
2113 static int sky2_reset(struct sky2_hw *hw)
2114 {
2115 u32 ctst;
2116 u16 status;
2117 u8 t8, pmd_type;
2118 int i;
2119
2120 ctst = sky2_read32(hw, B0_CTST);
2121
2122 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2123 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2124 if (hw->chip_id < CHIP_ID_YUKON_XL || hw->chip_id > CHIP_ID_YUKON_FE) {
2125 printk(KERN_ERR PFX "%s: unsupported chip type 0x%x\n",
2126 pci_name(hw->pdev), hw->chip_id);
2127 return -EOPNOTSUPP;
2128 }
2129
2130 /* ring for status responses */
2131 hw->st_le = pci_alloc_consistent(hw->pdev, STATUS_LE_BYTES,
2132 &hw->st_dma);
2133 if (!hw->st_le)
2134 return -ENOMEM;
2135
2136 /* disable ASF */
2137 if (hw->chip_id <= CHIP_ID_YUKON_EC) {
2138 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2139 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2140 }
2141
2142 /* do a SW reset */
2143 sky2_write8(hw, B0_CTST, CS_RST_SET);
2144 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2145
2146 /* clear PCI errors, if any */
2147 pci_read_config_word(hw->pdev, PCI_STATUS, &status);
2148 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2149 pci_write_config_word(hw->pdev, PCI_STATUS,
2150 status | PCI_STATUS_ERROR_BITS);
2151
2152 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2153
2154 /* clear any PEX errors */
2155 if (is_pciex(hw)) {
2156 u16 lstat;
2157 pci_write_config_dword(hw->pdev, PEX_UNC_ERR_STAT,
2158 0xffffffffUL);
2159 pci_read_config_word(hw->pdev, PEX_LNK_STAT, &lstat);
2160 }
2161
2162 pmd_type = sky2_read8(hw, B2_PMD_TYP);
2163 hw->copper = !(pmd_type == 'L' || pmd_type == 'S');
2164
2165 hw->ports = 1;
2166 t8 = sky2_read8(hw, B2_Y2_HW_RES);
2167 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
2168 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2169 ++hw->ports;
2170 }
2171 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2172
2173 sky2_set_power_state(hw, PCI_D0);
2174
2175 for (i = 0; i < hw->ports; i++) {
2176 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2177 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2178 }
2179
2180 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2181
2182 /* Clear I2C IRQ noise */
2183 sky2_write32(hw, B2_I2C_IRQ, 1);
2184
2185 /* turn off hardware timer (unused) */
2186 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2187 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
2188
2189 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
2190
2191 /* Turn off descriptor polling */
2192 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
2193
2194 /* Turn off receive timestamp */
2195 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
2196 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2197
2198 /* enable the Tx Arbiters */
2199 for (i = 0; i < hw->ports; i++)
2200 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
2201
2202 /* Initialize ram interface */
2203 for (i = 0; i < hw->ports; i++) {
2204 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
2205
2206 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
2207 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
2208 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
2209 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
2210 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
2211 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
2212 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
2213 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
2214 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
2215 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
2216 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
2217 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
2218 }
2219
2220 sky2_write32(hw, B0_HWE_IMSK, Y2_HWE_ALL_MASK);
2221
2222 for (i = 0; i < hw->ports; i++)
2223 sky2_phy_reset(hw, i);
2224
2225 memset(hw->st_le, 0, STATUS_LE_BYTES);
2226 hw->st_idx = 0;
2227
2228 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
2229 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
2230
2231 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
2232 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
2233
2234 /* Set the list last index */
2235 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
2236
2237 /* These status setup values are copied from SysKonnect's driver */
2238 if (is_ec_a1(hw)) {
2239 /* WA for dev. #4.3 */
2240 sky2_write16(hw, STAT_TX_IDX_TH, 0xfff); /* Tx Threshold */
2241
2242 /* set Status-FIFO watermark */
2243 sky2_write8(hw, STAT_FIFO_WM, 0x21); /* WA for dev. #4.18 */
2244
2245 /* set Status-FIFO ISR watermark */
2246 sky2_write8(hw, STAT_FIFO_ISR_WM, 0x07); /* WA for dev. #4.18 */
2247 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 10000));
2248 } else {
2249 sky2_write16(hw, STAT_TX_IDX_TH, 10);
2250 sky2_write8(hw, STAT_FIFO_WM, 16);
2251
2252 /* set Status-FIFO ISR watermark */
2253 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
2254 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
2255 else
2256 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
2257
2258 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
2259 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
2260 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
2261 }
2262
2263 /* enable status unit */
2264 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
2265
2266 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2267 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2268 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2269
2270 return 0;
2271 }
2272
2273 static inline u32 sky2_supported_modes(const struct sky2_hw *hw)
2274 {
2275 u32 modes;
2276 if (hw->copper) {
2277 modes = SUPPORTED_10baseT_Half
2278 | SUPPORTED_10baseT_Full
2279 | SUPPORTED_100baseT_Half
2280 | SUPPORTED_100baseT_Full
2281 | SUPPORTED_Autoneg | SUPPORTED_TP;
2282
2283 if (hw->chip_id != CHIP_ID_YUKON_FE)
2284 modes |= SUPPORTED_1000baseT_Half
2285 | SUPPORTED_1000baseT_Full;
2286 } else
2287 modes = SUPPORTED_1000baseT_Full | SUPPORTED_FIBRE
2288 | SUPPORTED_Autoneg;
2289 return modes;
2290 }
2291
2292 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2293 {
2294 struct sky2_port *sky2 = netdev_priv(dev);
2295 struct sky2_hw *hw = sky2->hw;
2296
2297 ecmd->transceiver = XCVR_INTERNAL;
2298 ecmd->supported = sky2_supported_modes(hw);
2299 ecmd->phy_address = PHY_ADDR_MARV;
2300 if (hw->copper) {
2301 ecmd->supported = SUPPORTED_10baseT_Half
2302 | SUPPORTED_10baseT_Full
2303 | SUPPORTED_100baseT_Half
2304 | SUPPORTED_100baseT_Full
2305 | SUPPORTED_1000baseT_Half
2306 | SUPPORTED_1000baseT_Full
2307 | SUPPORTED_Autoneg | SUPPORTED_TP;
2308 ecmd->port = PORT_TP;
2309 } else
2310 ecmd->port = PORT_FIBRE;
2311
2312 ecmd->advertising = sky2->advertising;
2313 ecmd->autoneg = sky2->autoneg;
2314 ecmd->speed = sky2->speed;
2315 ecmd->duplex = sky2->duplex;
2316 return 0;
2317 }
2318
2319 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2320 {
2321 struct sky2_port *sky2 = netdev_priv(dev);
2322 const struct sky2_hw *hw = sky2->hw;
2323 u32 supported = sky2_supported_modes(hw);
2324
2325 if (ecmd->autoneg == AUTONEG_ENABLE) {
2326 ecmd->advertising = supported;
2327 sky2->duplex = -1;
2328 sky2->speed = -1;
2329 } else {
2330 u32 setting;
2331
2332 switch (ecmd->speed) {
2333 case SPEED_1000:
2334 if (ecmd->duplex == DUPLEX_FULL)
2335 setting = SUPPORTED_1000baseT_Full;
2336 else if (ecmd->duplex == DUPLEX_HALF)
2337 setting = SUPPORTED_1000baseT_Half;
2338 else
2339 return -EINVAL;
2340 break;
2341 case SPEED_100:
2342 if (ecmd->duplex == DUPLEX_FULL)
2343 setting = SUPPORTED_100baseT_Full;
2344 else if (ecmd->duplex == DUPLEX_HALF)
2345 setting = SUPPORTED_100baseT_Half;
2346 else
2347 return -EINVAL;
2348 break;
2349
2350 case SPEED_10:
2351 if (ecmd->duplex == DUPLEX_FULL)
2352 setting = SUPPORTED_10baseT_Full;
2353 else if (ecmd->duplex == DUPLEX_HALF)
2354 setting = SUPPORTED_10baseT_Half;
2355 else
2356 return -EINVAL;
2357 break;
2358 default:
2359 return -EINVAL;
2360 }
2361
2362 if ((setting & supported) == 0)
2363 return -EINVAL;
2364
2365 sky2->speed = ecmd->speed;
2366 sky2->duplex = ecmd->duplex;
2367 }
2368
2369 sky2->autoneg = ecmd->autoneg;
2370 sky2->advertising = ecmd->advertising;
2371
2372 if (netif_running(dev))
2373 sky2_phy_reinit(sky2);
2374
2375 return 0;
2376 }
2377
2378 static void sky2_get_drvinfo(struct net_device *dev,
2379 struct ethtool_drvinfo *info)
2380 {
2381 struct sky2_port *sky2 = netdev_priv(dev);
2382
2383 strcpy(info->driver, DRV_NAME);
2384 strcpy(info->version, DRV_VERSION);
2385 strcpy(info->fw_version, "N/A");
2386 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
2387 }
2388
2389 static const struct sky2_stat {
2390 char name[ETH_GSTRING_LEN];
2391 u16 offset;
2392 } sky2_stats[] = {
2393 { "tx_bytes", GM_TXO_OK_HI },
2394 { "rx_bytes", GM_RXO_OK_HI },
2395 { "tx_broadcast", GM_TXF_BC_OK },
2396 { "rx_broadcast", GM_RXF_BC_OK },
2397 { "tx_multicast", GM_TXF_MC_OK },
2398 { "rx_multicast", GM_RXF_MC_OK },
2399 { "tx_unicast", GM_TXF_UC_OK },
2400 { "rx_unicast", GM_RXF_UC_OK },
2401 { "tx_mac_pause", GM_TXF_MPAUSE },
2402 { "rx_mac_pause", GM_RXF_MPAUSE },
2403 { "collisions", GM_TXF_SNG_COL },
2404 { "late_collision",GM_TXF_LAT_COL },
2405 { "aborted", GM_TXF_ABO_COL },
2406 { "multi_collisions", GM_TXF_MUL_COL },
2407 { "fifo_underrun", GM_TXE_FIFO_UR },
2408 { "fifo_overflow", GM_RXE_FIFO_OV },
2409 { "rx_toolong", GM_RXF_LNG_ERR },
2410 { "rx_jabber", GM_RXF_JAB_PKT },
2411 { "rx_runt", GM_RXE_FRAG },
2412 { "rx_too_long", GM_RXF_LNG_ERR },
2413 { "rx_fcs_error", GM_RXF_FCS_ERR },
2414 };
2415
2416 static u32 sky2_get_rx_csum(struct net_device *dev)
2417 {
2418 struct sky2_port *sky2 = netdev_priv(dev);
2419
2420 return sky2->rx_csum;
2421 }
2422
2423 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
2424 {
2425 struct sky2_port *sky2 = netdev_priv(dev);
2426
2427 sky2->rx_csum = data;
2428
2429 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2430 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
2431
2432 return 0;
2433 }
2434
2435 static u32 sky2_get_msglevel(struct net_device *netdev)
2436 {
2437 struct sky2_port *sky2 = netdev_priv(netdev);
2438 return sky2->msg_enable;
2439 }
2440
2441 static int sky2_nway_reset(struct net_device *dev)
2442 {
2443 struct sky2_port *sky2 = netdev_priv(dev);
2444
2445 if (sky2->autoneg != AUTONEG_ENABLE)
2446 return -EINVAL;
2447
2448 sky2_phy_reinit(sky2);
2449
2450 return 0;
2451 }
2452
2453 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
2454 {
2455 struct sky2_hw *hw = sky2->hw;
2456 unsigned port = sky2->port;
2457 int i;
2458
2459 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
2460 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
2461 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
2462 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
2463
2464 for (i = 2; i < count; i++)
2465 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
2466 }
2467
2468 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
2469 {
2470 struct sky2_port *sky2 = netdev_priv(netdev);
2471 sky2->msg_enable = value;
2472 }
2473
2474 static int sky2_get_stats_count(struct net_device *dev)
2475 {
2476 return ARRAY_SIZE(sky2_stats);
2477 }
2478
2479 static void sky2_get_ethtool_stats(struct net_device *dev,
2480 struct ethtool_stats *stats, u64 * data)
2481 {
2482 struct sky2_port *sky2 = netdev_priv(dev);
2483
2484 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
2485 }
2486
2487 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
2488 {
2489 int i;
2490
2491 switch (stringset) {
2492 case ETH_SS_STATS:
2493 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
2494 memcpy(data + i * ETH_GSTRING_LEN,
2495 sky2_stats[i].name, ETH_GSTRING_LEN);
2496 break;
2497 }
2498 }
2499
2500 /* Use hardware MIB variables for critical path statistics and
2501 * transmit feedback not reported at interrupt.
2502 * Other errors are accounted for in interrupt handler.
2503 */
2504 static struct net_device_stats *sky2_get_stats(struct net_device *dev)
2505 {
2506 struct sky2_port *sky2 = netdev_priv(dev);
2507 u64 data[13];
2508
2509 sky2_phy_stats(sky2, data, ARRAY_SIZE(data));
2510
2511 sky2->net_stats.tx_bytes = data[0];
2512 sky2->net_stats.rx_bytes = data[1];
2513 sky2->net_stats.tx_packets = data[2] + data[4] + data[6];
2514 sky2->net_stats.rx_packets = data[3] + data[5] + data[7];
2515 sky2->net_stats.multicast = data[5] + data[7];
2516 sky2->net_stats.collisions = data[10];
2517 sky2->net_stats.tx_aborted_errors = data[12];
2518
2519 return &sky2->net_stats;
2520 }
2521
2522 static int sky2_set_mac_address(struct net_device *dev, void *p)
2523 {
2524 struct sky2_port *sky2 = netdev_priv(dev);
2525 struct sockaddr *addr = p;
2526
2527 if (!is_valid_ether_addr(addr->sa_data))
2528 return -EADDRNOTAVAIL;
2529
2530 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
2531 memcpy_toio(sky2->hw->regs + B2_MAC_1 + sky2->port * 8,
2532 dev->dev_addr, ETH_ALEN);
2533 memcpy_toio(sky2->hw->regs + B2_MAC_2 + sky2->port * 8,
2534 dev->dev_addr, ETH_ALEN);
2535
2536 if (netif_running(dev))
2537 sky2_phy_reinit(sky2);
2538
2539 return 0;
2540 }
2541
2542 static void sky2_set_multicast(struct net_device *dev)
2543 {
2544 struct sky2_port *sky2 = netdev_priv(dev);
2545 struct sky2_hw *hw = sky2->hw;
2546 unsigned port = sky2->port;
2547 struct dev_mc_list *list = dev->mc_list;
2548 u16 reg;
2549 u8 filter[8];
2550
2551 memset(filter, 0, sizeof(filter));
2552
2553 reg = gma_read16(hw, port, GM_RX_CTRL);
2554 reg |= GM_RXCR_UCF_ENA;
2555
2556 if (dev->flags & IFF_PROMISC) /* promiscuous */
2557 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
2558 else if ((dev->flags & IFF_ALLMULTI) || dev->mc_count > 16) /* all multicast */
2559 memset(filter, 0xff, sizeof(filter));
2560 else if (dev->mc_count == 0) /* no multicast */
2561 reg &= ~GM_RXCR_MCF_ENA;
2562 else {
2563 int i;
2564 reg |= GM_RXCR_MCF_ENA;
2565
2566 for (i = 0; list && i < dev->mc_count; i++, list = list->next) {
2567 u32 bit = ether_crc(ETH_ALEN, list->dmi_addr) & 0x3f;
2568 filter[bit / 8] |= 1 << (bit % 8);
2569 }
2570 }
2571
2572 gma_write16(hw, port, GM_MC_ADDR_H1,
2573 (u16) filter[0] | ((u16) filter[1] << 8));
2574 gma_write16(hw, port, GM_MC_ADDR_H2,
2575 (u16) filter[2] | ((u16) filter[3] << 8));
2576 gma_write16(hw, port, GM_MC_ADDR_H3,
2577 (u16) filter[4] | ((u16) filter[5] << 8));
2578 gma_write16(hw, port, GM_MC_ADDR_H4,
2579 (u16) filter[6] | ((u16) filter[7] << 8));
2580
2581 gma_write16(hw, port, GM_RX_CTRL, reg);
2582 }
2583
2584 /* Can have one global because blinking is controlled by
2585 * ethtool and that is always under RTNL mutex
2586 */
2587 static void sky2_led(struct sky2_hw *hw, unsigned port, int on)
2588 {
2589 u16 pg;
2590
2591 switch (hw->chip_id) {
2592 case CHIP_ID_YUKON_XL:
2593 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2594 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2595 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
2596 on ? (PHY_M_LEDC_LOS_CTRL(1) |
2597 PHY_M_LEDC_INIT_CTRL(7) |
2598 PHY_M_LEDC_STA1_CTRL(7) |
2599 PHY_M_LEDC_STA0_CTRL(7))
2600 : 0);
2601
2602 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2603 break;
2604
2605 default:
2606 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
2607 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
2608 on ? PHY_M_LED_MO_DUP(MO_LED_ON) |
2609 PHY_M_LED_MO_10(MO_LED_ON) |
2610 PHY_M_LED_MO_100(MO_LED_ON) |
2611 PHY_M_LED_MO_1000(MO_LED_ON) |
2612 PHY_M_LED_MO_RX(MO_LED_ON)
2613 : PHY_M_LED_MO_DUP(MO_LED_OFF) |
2614 PHY_M_LED_MO_10(MO_LED_OFF) |
2615 PHY_M_LED_MO_100(MO_LED_OFF) |
2616 PHY_M_LED_MO_1000(MO_LED_OFF) |
2617 PHY_M_LED_MO_RX(MO_LED_OFF));
2618
2619 }
2620 }
2621
2622 /* blink LED's for finding board */
2623 static int sky2_phys_id(struct net_device *dev, u32 data)
2624 {
2625 struct sky2_port *sky2 = netdev_priv(dev);
2626 struct sky2_hw *hw = sky2->hw;
2627 unsigned port = sky2->port;
2628 u16 ledctrl, ledover = 0;
2629 long ms;
2630 int interrupted;
2631 int onoff = 1;
2632
2633 if (!data || data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ))
2634 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT);
2635 else
2636 ms = data * 1000;
2637
2638 /* save initial values */
2639 down(&sky2->phy_sema);
2640 if (hw->chip_id == CHIP_ID_YUKON_XL) {
2641 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
2642 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
2643 ledctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
2644 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2645 } else {
2646 ledctrl = gm_phy_read(hw, port, PHY_MARV_LED_CTRL);
2647 ledover = gm_phy_read(hw, port, PHY_MARV_LED_OVER);
2648 }
2649
2650 interrupted = 0;
2651 while (!interrupted && ms > 0) {
2652 sky2_led(hw, port, onoff);
2653 onoff = !onoff;
2654
2655 up(&sky2->phy_sema);
2656 interrupted = msleep_interruptible(250);
2657 down(&sky2->phy_sema);
2658
2659 ms -= 250;
2660 }
2661
2662 /* resume regularly scheduled programming */
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 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ledctrl);
2667 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
2668 } else {
2669 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
2670 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
2671 }
2672 up(&sky2->phy_sema);
2673
2674 return 0;
2675 }
2676
2677 static void sky2_get_pauseparam(struct net_device *dev,
2678 struct ethtool_pauseparam *ecmd)
2679 {
2680 struct sky2_port *sky2 = netdev_priv(dev);
2681
2682 ecmd->tx_pause = sky2->tx_pause;
2683 ecmd->rx_pause = sky2->rx_pause;
2684 ecmd->autoneg = sky2->autoneg;
2685 }
2686
2687 static int sky2_set_pauseparam(struct net_device *dev,
2688 struct ethtool_pauseparam *ecmd)
2689 {
2690 struct sky2_port *sky2 = netdev_priv(dev);
2691 int err = 0;
2692
2693 sky2->autoneg = ecmd->autoneg;
2694 sky2->tx_pause = ecmd->tx_pause != 0;
2695 sky2->rx_pause = ecmd->rx_pause != 0;
2696
2697 sky2_phy_reinit(sky2);
2698
2699 return err;
2700 }
2701
2702 #ifdef CONFIG_PM
2703 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2704 {
2705 struct sky2_port *sky2 = netdev_priv(dev);
2706
2707 wol->supported = WAKE_MAGIC;
2708 wol->wolopts = sky2->wol ? WAKE_MAGIC : 0;
2709 }
2710
2711 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2712 {
2713 struct sky2_port *sky2 = netdev_priv(dev);
2714 struct sky2_hw *hw = sky2->hw;
2715
2716 if (wol->wolopts != WAKE_MAGIC && wol->wolopts != 0)
2717 return -EOPNOTSUPP;
2718
2719 sky2->wol = wol->wolopts == WAKE_MAGIC;
2720
2721 if (sky2->wol) {
2722 memcpy_toio(hw->regs + WOL_MAC_ADDR, dev->dev_addr, ETH_ALEN);
2723
2724 sky2_write16(hw, WOL_CTRL_STAT,
2725 WOL_CTL_ENA_PME_ON_MAGIC_PKT |
2726 WOL_CTL_ENA_MAGIC_PKT_UNIT);
2727 } else
2728 sky2_write16(hw, WOL_CTRL_STAT, WOL_CTL_DEFAULT);
2729
2730 return 0;
2731 }
2732 #endif
2733
2734 static int sky2_get_coalesce(struct net_device *dev,
2735 struct ethtool_coalesce *ecmd)
2736 {
2737 struct sky2_port *sky2 = netdev_priv(dev);
2738 struct sky2_hw *hw = sky2->hw;
2739
2740 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
2741 ecmd->tx_coalesce_usecs = 0;
2742 else {
2743 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
2744 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
2745 }
2746 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
2747
2748 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
2749 ecmd->rx_coalesce_usecs = 0;
2750 else {
2751 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
2752 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
2753 }
2754 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
2755
2756 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
2757 ecmd->rx_coalesce_usecs_irq = 0;
2758 else {
2759 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
2760 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
2761 }
2762
2763 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
2764
2765 return 0;
2766 }
2767
2768 /* Note: this affect both ports */
2769 static int sky2_set_coalesce(struct net_device *dev,
2770 struct ethtool_coalesce *ecmd)
2771 {
2772 struct sky2_port *sky2 = netdev_priv(dev);
2773 struct sky2_hw *hw = sky2->hw;
2774 const u32 tmin = sky2_clk2us(hw, 1);
2775 const u32 tmax = 5000;
2776
2777 if (ecmd->tx_coalesce_usecs != 0 &&
2778 (ecmd->tx_coalesce_usecs < tmin || ecmd->tx_coalesce_usecs > tmax))
2779 return -EINVAL;
2780
2781 if (ecmd->rx_coalesce_usecs != 0 &&
2782 (ecmd->rx_coalesce_usecs < tmin || ecmd->rx_coalesce_usecs > tmax))
2783 return -EINVAL;
2784
2785 if (ecmd->rx_coalesce_usecs_irq != 0 &&
2786 (ecmd->rx_coalesce_usecs_irq < tmin || ecmd->rx_coalesce_usecs_irq > tmax))
2787 return -EINVAL;
2788
2789 if (ecmd->tx_max_coalesced_frames > 0xffff)
2790 return -EINVAL;
2791 if (ecmd->rx_max_coalesced_frames > 0xff)
2792 return -EINVAL;
2793 if (ecmd->rx_max_coalesced_frames_irq > 0xff)
2794 return -EINVAL;
2795
2796 if (ecmd->tx_coalesce_usecs == 0)
2797 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
2798 else {
2799 sky2_write32(hw, STAT_TX_TIMER_INI,
2800 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
2801 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2802 }
2803 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
2804
2805 if (ecmd->rx_coalesce_usecs == 0)
2806 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
2807 else {
2808 sky2_write32(hw, STAT_LEV_TIMER_INI,
2809 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
2810 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2811 }
2812 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
2813
2814 if (ecmd->rx_coalesce_usecs_irq == 0)
2815 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
2816 else {
2817 sky2_write32(hw, STAT_TX_TIMER_INI,
2818 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
2819 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2820 }
2821 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
2822 return 0;
2823 }
2824
2825 static void sky2_get_ringparam(struct net_device *dev,
2826 struct ethtool_ringparam *ering)
2827 {
2828 struct sky2_port *sky2 = netdev_priv(dev);
2829
2830 ering->rx_max_pending = RX_MAX_PENDING;
2831 ering->rx_mini_max_pending = 0;
2832 ering->rx_jumbo_max_pending = 0;
2833 ering->tx_max_pending = TX_RING_SIZE - 1;
2834
2835 ering->rx_pending = sky2->rx_pending;
2836 ering->rx_mini_pending = 0;
2837 ering->rx_jumbo_pending = 0;
2838 ering->tx_pending = sky2->tx_pending;
2839 }
2840
2841 static int sky2_set_ringparam(struct net_device *dev,
2842 struct ethtool_ringparam *ering)
2843 {
2844 struct sky2_port *sky2 = netdev_priv(dev);
2845 int err = 0;
2846
2847 if (ering->rx_pending > RX_MAX_PENDING ||
2848 ering->rx_pending < 8 ||
2849 ering->tx_pending < MAX_SKB_TX_LE ||
2850 ering->tx_pending > TX_RING_SIZE - 1)
2851 return -EINVAL;
2852
2853 if (netif_running(dev))
2854 sky2_down(dev);
2855
2856 sky2->rx_pending = ering->rx_pending;
2857 sky2->tx_pending = ering->tx_pending;
2858
2859 if (netif_running(dev)) {
2860 err = sky2_up(dev);
2861 if (err)
2862 dev_close(dev);
2863 else
2864 sky2_set_multicast(dev);
2865 }
2866
2867 return err;
2868 }
2869
2870 static int sky2_get_regs_len(struct net_device *dev)
2871 {
2872 return 0x4000;
2873 }
2874
2875 /*
2876 * Returns copy of control register region
2877 * Note: access to the RAM address register set will cause timeouts.
2878 */
2879 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
2880 void *p)
2881 {
2882 const struct sky2_port *sky2 = netdev_priv(dev);
2883 const void __iomem *io = sky2->hw->regs;
2884
2885 BUG_ON(regs->len < B3_RI_WTO_R1);
2886 regs->version = 1;
2887 memset(p, 0, regs->len);
2888
2889 memcpy_fromio(p, io, B3_RAM_ADDR);
2890
2891 memcpy_fromio(p + B3_RI_WTO_R1,
2892 io + B3_RI_WTO_R1,
2893 regs->len - B3_RI_WTO_R1);
2894 }
2895
2896 static struct ethtool_ops sky2_ethtool_ops = {
2897 .get_settings = sky2_get_settings,
2898 .set_settings = sky2_set_settings,
2899 .get_drvinfo = sky2_get_drvinfo,
2900 .get_msglevel = sky2_get_msglevel,
2901 .set_msglevel = sky2_set_msglevel,
2902 .nway_reset = sky2_nway_reset,
2903 .get_regs_len = sky2_get_regs_len,
2904 .get_regs = sky2_get_regs,
2905 .get_link = ethtool_op_get_link,
2906 .get_sg = ethtool_op_get_sg,
2907 .set_sg = ethtool_op_set_sg,
2908 .get_tx_csum = ethtool_op_get_tx_csum,
2909 .set_tx_csum = ethtool_op_set_tx_csum,
2910 .get_tso = ethtool_op_get_tso,
2911 .set_tso = ethtool_op_set_tso,
2912 .get_rx_csum = sky2_get_rx_csum,
2913 .set_rx_csum = sky2_set_rx_csum,
2914 .get_strings = sky2_get_strings,
2915 .get_coalesce = sky2_get_coalesce,
2916 .set_coalesce = sky2_set_coalesce,
2917 .get_ringparam = sky2_get_ringparam,
2918 .set_ringparam = sky2_set_ringparam,
2919 .get_pauseparam = sky2_get_pauseparam,
2920 .set_pauseparam = sky2_set_pauseparam,
2921 #ifdef CONFIG_PM
2922 .get_wol = sky2_get_wol,
2923 .set_wol = sky2_set_wol,
2924 #endif
2925 .phys_id = sky2_phys_id,
2926 .get_stats_count = sky2_get_stats_count,
2927 .get_ethtool_stats = sky2_get_ethtool_stats,
2928 .get_perm_addr = ethtool_op_get_perm_addr,
2929 };
2930
2931 /* Initialize network device */
2932 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
2933 unsigned port, int highmem)
2934 {
2935 struct sky2_port *sky2;
2936 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
2937
2938 if (!dev) {
2939 printk(KERN_ERR "sky2 etherdev alloc failed");
2940 return NULL;
2941 }
2942
2943 SET_MODULE_OWNER(dev);
2944 SET_NETDEV_DEV(dev, &hw->pdev->dev);
2945 dev->irq = hw->pdev->irq;
2946 dev->open = sky2_up;
2947 dev->stop = sky2_down;
2948 dev->do_ioctl = sky2_ioctl;
2949 dev->hard_start_xmit = sky2_xmit_frame;
2950 dev->get_stats = sky2_get_stats;
2951 dev->set_multicast_list = sky2_set_multicast;
2952 dev->set_mac_address = sky2_set_mac_address;
2953 dev->change_mtu = sky2_change_mtu;
2954 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
2955 dev->tx_timeout = sky2_tx_timeout;
2956 dev->watchdog_timeo = TX_WATCHDOG;
2957 if (port == 0)
2958 dev->poll = sky2_poll;
2959 dev->weight = NAPI_WEIGHT;
2960 #ifdef CONFIG_NET_POLL_CONTROLLER
2961 dev->poll_controller = sky2_netpoll;
2962 #endif
2963
2964 sky2 = netdev_priv(dev);
2965 sky2->netdev = dev;
2966 sky2->hw = hw;
2967 sky2->msg_enable = netif_msg_init(debug, default_msg);
2968
2969 spin_lock_init(&sky2->tx_lock);
2970 /* Auto speed and flow control */
2971 sky2->autoneg = AUTONEG_ENABLE;
2972 sky2->tx_pause = 1;
2973 sky2->rx_pause = 1;
2974 sky2->duplex = -1;
2975 sky2->speed = -1;
2976 sky2->advertising = sky2_supported_modes(hw);
2977
2978 /* Receive checksum disabled for Yukon XL
2979 * because of observed problems with incorrect
2980 * values when multiple packets are received in one interrupt
2981 */
2982 sky2->rx_csum = (hw->chip_id != CHIP_ID_YUKON_XL);
2983
2984 INIT_WORK(&sky2->phy_task, sky2_phy_task, sky2);
2985 init_MUTEX(&sky2->phy_sema);
2986 sky2->tx_pending = TX_DEF_PENDING;
2987 sky2->rx_pending = is_ec_a1(hw) ? 8 : RX_DEF_PENDING;
2988 sky2->rx_bufsize = sky2_buf_size(ETH_DATA_LEN);
2989
2990 hw->dev[port] = dev;
2991
2992 sky2->port = port;
2993
2994 dev->features |= NETIF_F_LLTX;
2995 if (hw->chip_id != CHIP_ID_YUKON_EC_U)
2996 dev->features |= NETIF_F_TSO;
2997 if (highmem)
2998 dev->features |= NETIF_F_HIGHDMA;
2999 dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
3000
3001 #ifdef SKY2_VLAN_TAG_USED
3002 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
3003 dev->vlan_rx_register = sky2_vlan_rx_register;
3004 dev->vlan_rx_kill_vid = sky2_vlan_rx_kill_vid;
3005 #endif
3006
3007 /* read the mac address */
3008 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
3009 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
3010
3011 /* device is off until link detection */
3012 netif_carrier_off(dev);
3013 netif_stop_queue(dev);
3014
3015 return dev;
3016 }
3017
3018 static inline void sky2_show_addr(struct net_device *dev)
3019 {
3020 const struct sky2_port *sky2 = netdev_priv(dev);
3021
3022 if (netif_msg_probe(sky2))
3023 printk(KERN_INFO PFX "%s: addr %02x:%02x:%02x:%02x:%02x:%02x\n",
3024 dev->name,
3025 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
3026 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
3027 }
3028
3029 static int __devinit sky2_probe(struct pci_dev *pdev,
3030 const struct pci_device_id *ent)
3031 {
3032 struct net_device *dev, *dev1 = NULL;
3033 struct sky2_hw *hw;
3034 int err, pm_cap, using_dac = 0;
3035
3036 err = pci_enable_device(pdev);
3037 if (err) {
3038 printk(KERN_ERR PFX "%s cannot enable PCI device\n",
3039 pci_name(pdev));
3040 goto err_out;
3041 }
3042
3043 err = pci_request_regions(pdev, DRV_NAME);
3044 if (err) {
3045 printk(KERN_ERR PFX "%s cannot obtain PCI resources\n",
3046 pci_name(pdev));
3047 goto err_out;
3048 }
3049
3050 pci_set_master(pdev);
3051
3052 /* Find power-management capability. */
3053 pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
3054 if (pm_cap == 0) {
3055 printk(KERN_ERR PFX "Cannot find PowerManagement capability, "
3056 "aborting.\n");
3057 err = -EIO;
3058 goto err_out_free_regions;
3059 }
3060
3061 if (sizeof(dma_addr_t) > sizeof(u32) &&
3062 !(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
3063 using_dac = 1;
3064 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3065 if (err < 0) {
3066 printk(KERN_ERR PFX "%s unable to obtain 64 bit DMA "
3067 "for consistent allocations\n", pci_name(pdev));
3068 goto err_out_free_regions;
3069 }
3070
3071 } else {
3072 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
3073 if (err) {
3074 printk(KERN_ERR PFX "%s no usable DMA configuration\n",
3075 pci_name(pdev));
3076 goto err_out_free_regions;
3077 }
3078 }
3079
3080 #ifdef __BIG_ENDIAN
3081 /* byte swap descriptors in hardware */
3082 {
3083 u32 reg;
3084
3085 pci_read_config_dword(pdev, PCI_DEV_REG2, &reg);
3086 reg |= PCI_REV_DESC;
3087 pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
3088 }
3089 #endif
3090
3091 err = -ENOMEM;
3092 hw = kmalloc(sizeof(*hw), GFP_KERNEL);
3093 if (!hw) {
3094 printk(KERN_ERR PFX "%s: cannot allocate hardware struct\n",
3095 pci_name(pdev));
3096 goto err_out_free_regions;
3097 }
3098
3099 memset(hw, 0, sizeof(*hw));
3100 hw->pdev = pdev;
3101
3102 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
3103 if (!hw->regs) {
3104 printk(KERN_ERR PFX "%s: cannot map device registers\n",
3105 pci_name(pdev));
3106 goto err_out_free_hw;
3107 }
3108 hw->pm_cap = pm_cap;
3109
3110 err = sky2_reset(hw);
3111 if (err)
3112 goto err_out_iounmap;
3113
3114 printk(KERN_INFO PFX "v%s addr 0x%lx irq %d Yukon-%s (0x%x) rev %d\n",
3115 DRV_VERSION, pci_resource_start(pdev, 0), pdev->irq,
3116 yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
3117 hw->chip_id, hw->chip_rev);
3118
3119 dev = sky2_init_netdev(hw, 0, using_dac);
3120 if (!dev)
3121 goto err_out_free_pci;
3122
3123 err = register_netdev(dev);
3124 if (err) {
3125 printk(KERN_ERR PFX "%s: cannot register net device\n",
3126 pci_name(pdev));
3127 goto err_out_free_netdev;
3128 }
3129
3130 sky2_show_addr(dev);
3131
3132 if (hw->ports > 1 && (dev1 = sky2_init_netdev(hw, 1, using_dac))) {
3133 if (register_netdev(dev1) == 0)
3134 sky2_show_addr(dev1);
3135 else {
3136 /* Failure to register second port need not be fatal */
3137 printk(KERN_WARNING PFX
3138 "register of second port failed\n");
3139 hw->dev[1] = NULL;
3140 free_netdev(dev1);
3141 }
3142 }
3143
3144 err = request_irq(pdev->irq, sky2_intr, SA_SHIRQ, DRV_NAME, hw);
3145 if (err) {
3146 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3147 pci_name(pdev), pdev->irq);
3148 goto err_out_unregister;
3149 }
3150
3151 hw->intr_mask = Y2_IS_BASE;
3152 sky2_write32(hw, B0_IMSK, hw->intr_mask);
3153
3154 pci_set_drvdata(pdev, hw);
3155
3156 return 0;
3157
3158 err_out_unregister:
3159 if (dev1) {
3160 unregister_netdev(dev1);
3161 free_netdev(dev1);
3162 }
3163 unregister_netdev(dev);
3164 err_out_free_netdev:
3165 free_netdev(dev);
3166 err_out_free_pci:
3167 sky2_write8(hw, B0_CTST, CS_RST_SET);
3168 pci_free_consistent(hw->pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3169 err_out_iounmap:
3170 iounmap(hw->regs);
3171 err_out_free_hw:
3172 kfree(hw);
3173 err_out_free_regions:
3174 pci_release_regions(pdev);
3175 pci_disable_device(pdev);
3176 err_out:
3177 return err;
3178 }
3179
3180 static void __devexit sky2_remove(struct pci_dev *pdev)
3181 {
3182 struct sky2_hw *hw = pci_get_drvdata(pdev);
3183 struct net_device *dev0, *dev1;
3184
3185 if (!hw)
3186 return;
3187
3188 dev0 = hw->dev[0];
3189 dev1 = hw->dev[1];
3190 if (dev1)
3191 unregister_netdev(dev1);
3192 unregister_netdev(dev0);
3193
3194 sky2_write32(hw, B0_IMSK, 0);
3195 sky2_set_power_state(hw, PCI_D3hot);
3196 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
3197 sky2_write8(hw, B0_CTST, CS_RST_SET);
3198 sky2_read8(hw, B0_CTST);
3199
3200 free_irq(pdev->irq, hw);
3201 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
3202 pci_release_regions(pdev);
3203 pci_disable_device(pdev);
3204
3205 if (dev1)
3206 free_netdev(dev1);
3207 free_netdev(dev0);
3208 iounmap(hw->regs);
3209 kfree(hw);
3210
3211 pci_set_drvdata(pdev, NULL);
3212 }
3213
3214 #ifdef CONFIG_PM
3215 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
3216 {
3217 struct sky2_hw *hw = pci_get_drvdata(pdev);
3218 int i;
3219
3220 for (i = 0; i < 2; i++) {
3221 struct net_device *dev = hw->dev[i];
3222
3223 if (dev) {
3224 if (!netif_running(dev))
3225 continue;
3226
3227 sky2_down(dev);
3228 netif_device_detach(dev);
3229 }
3230 }
3231
3232 return sky2_set_power_state(hw, pci_choose_state(pdev, state));
3233 }
3234
3235 static int sky2_resume(struct pci_dev *pdev)
3236 {
3237 struct sky2_hw *hw = pci_get_drvdata(pdev);
3238 int i;
3239
3240 pci_restore_state(pdev);
3241 pci_enable_wake(pdev, PCI_D0, 0);
3242 sky2_set_power_state(hw, PCI_D0);
3243
3244 sky2_reset(hw);
3245
3246 for (i = 0; i < 2; i++) {
3247 struct net_device *dev = hw->dev[i];
3248 if (dev) {
3249 if (netif_running(dev)) {
3250 netif_device_attach(dev);
3251 if (sky2_up(dev))
3252 dev_close(dev);
3253 }
3254 }
3255 }
3256 return 0;
3257 }
3258 #endif
3259
3260 static struct pci_driver sky2_driver = {
3261 .name = DRV_NAME,
3262 .id_table = sky2_id_table,
3263 .probe = sky2_probe,
3264 .remove = __devexit_p(sky2_remove),
3265 #ifdef CONFIG_PM
3266 .suspend = sky2_suspend,
3267 .resume = sky2_resume,
3268 #endif
3269 };
3270
3271 static int __init sky2_init_module(void)
3272 {
3273 return pci_register_driver(&sky2_driver);
3274 }
3275
3276 static void __exit sky2_cleanup_module(void)
3277 {
3278 pci_unregister_driver(&sky2_driver);
3279 }
3280
3281 module_init(sky2_init_module);
3282 module_exit(sky2_cleanup_module);
3283
3284 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
3285 MODULE_AUTHOR("Stephen Hemminger <shemminger@osdl.org>");
3286 MODULE_LICENSE("GPL");
3287 MODULE_VERSION(DRV_VERSION);
Stable & featurefull patchset based on Linus's git branch