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befs: Validate length of long symbolic links.
[linux-2.6/kvm.git] / drivers / net / sky2.c
blob57339da76326eb504b4365a2716247c77af182ca
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.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
26
27 #include <linux/crc32.h>
28 #include <linux/kernel.h>
29 #include <linux/module.h>
30 #include <linux/netdevice.h>
31 #include <linux/dma-mapping.h>
32 #include <linux/etherdevice.h>
33 #include <linux/ethtool.h>
34 #include <linux/pci.h>
35 #include <linux/interrupt.h>
36 #include <linux/ip.h>
37 #include <linux/slab.h>
38 #include <net/ip.h>
39 #include <linux/tcp.h>
40 #include <linux/in.h>
41 #include <linux/delay.h>
42 #include <linux/workqueue.h>
43 #include <linux/if_vlan.h>
44 #include <linux/prefetch.h>
45 #include <linux/debugfs.h>
46 #include <linux/mii.h>
47
48 #include <asm/irq.h>
49
50 #include "sky2.h"
51
52 #define DRV_NAME "sky2"
53 #define DRV_VERSION "1.29"
54
55 /*
56 * The Yukon II chipset takes 64 bit command blocks (called list elements)
57 * that are organized into three (receive, transmit, status) different rings
58 * similar to Tigon3.
59 */
60
61 #define RX_LE_SIZE 1024
62 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
63 #define RX_MAX_PENDING (RX_LE_SIZE/6 - 2)
64 #define RX_DEF_PENDING RX_MAX_PENDING
65
66 /* This is the worst case number of transmit list elements for a single skb:
67 VLAN:GSO + CKSUM + Data + skb_frags * DMA */
68 #define MAX_SKB_TX_LE (2 + (sizeof(dma_addr_t)/sizeof(u32))*(MAX_SKB_FRAGS+1))
69 #define TX_MIN_PENDING (MAX_SKB_TX_LE+1)
70 #define TX_MAX_PENDING 1024
71 #define TX_DEF_PENDING 127
72
73 #define TX_WATCHDOG (5 * HZ)
74 #define NAPI_WEIGHT 64
75 #define PHY_RETRIES 1000
76
77 #define SKY2_EEPROM_MAGIC 0x9955aabb
78
79 #define RING_NEXT(x, s) (((x)+1) & ((s)-1))
80
81 static const u32 default_msg =
82 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
83 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
84 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
85
86 static int debug = -1; /* defaults above */
87 module_param(debug, int, 0);
88 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
89
90 static int copybreak __read_mostly = 128;
91 module_param(copybreak, int, 0);
92 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
93
94 static int disable_msi = 0;
95 module_param(disable_msi, int, 0);
96 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
97
98 static DEFINE_PCI_DEVICE_TABLE(sky2_id_table) = {
99 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
100 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
101 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E01) }, /* SK-9E21M */
102 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
103 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
104 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
105 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B03) }, /* DGE-550T */
106 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
107 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
108 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
109 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4354) }, /* 88E8040 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4355) }, /* 88E8040T */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4356) }, /* 88EC033 */
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4357) }, /* 88E8042 */
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x435A) }, /* 88E8048 */
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) }, /* 88E8052 */
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) }, /* 88E8050 */
125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) }, /* 88E8053 */
126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) }, /* 88E8055 */
127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) }, /* 88E8056 */
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4365) }, /* 88E8070 */
129 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) }, /* 88EC036 */
130 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) }, /* 88EC032 */
131 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) }, /* 88EC034 */
132 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4369) }, /* 88EC042 */
133 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436A) }, /* 88E8058 */
134 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436B) }, /* 88E8071 */
135 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436C) }, /* 88E8072 */
136 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436D) }, /* 88E8055 */
137 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4370) }, /* 88E8075 */
138 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4380) }, /* 88E8057 */
139 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4381) }, /* 88E8059 */
140 { 0 }
141 };
142
143 MODULE_DEVICE_TABLE(pci, sky2_id_table);
144
145 /* Avoid conditionals by using array */
146 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
147 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
148 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
149
150 static void sky2_set_multicast(struct net_device *dev);
151
152 /* Access to PHY via serial interconnect */
153 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
154 {
155 int i;
156
157 gma_write16(hw, port, GM_SMI_DATA, val);
158 gma_write16(hw, port, GM_SMI_CTRL,
159 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
160
161 for (i = 0; i < PHY_RETRIES; i++) {
162 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
163 if (ctrl == 0xffff)
164 goto io_error;
165
166 if (!(ctrl & GM_SMI_CT_BUSY))
167 return 0;
168
169 udelay(10);
170 }
171
172 dev_warn(&hw->pdev->dev, "%s: phy write timeout\n", hw->dev[port]->name);
173 return -ETIMEDOUT;
174
175 io_error:
176 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
177 return -EIO;
178 }
179
180 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
181 {
182 int i;
183
184 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
185 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
186
187 for (i = 0; i < PHY_RETRIES; i++) {
188 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
189 if (ctrl == 0xffff)
190 goto io_error;
191
192 if (ctrl & GM_SMI_CT_RD_VAL) {
193 *val = gma_read16(hw, port, GM_SMI_DATA);
194 return 0;
195 }
196
197 udelay(10);
198 }
199
200 dev_warn(&hw->pdev->dev, "%s: phy read timeout\n", hw->dev[port]->name);
201 return -ETIMEDOUT;
202 io_error:
203 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
204 return -EIO;
205 }
206
207 static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
208 {
209 u16 v;
210 __gm_phy_read(hw, port, reg, &v);
211 return v;
212 }
213
214
215 static void sky2_power_on(struct sky2_hw *hw)
216 {
217 /* switch power to VCC (WA for VAUX problem) */
218 sky2_write8(hw, B0_POWER_CTRL,
219 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
220
221 /* disable Core Clock Division, */
222 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
223
224 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
225 /* enable bits are inverted */
226 sky2_write8(hw, B2_Y2_CLK_GATE,
227 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
228 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
229 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
230 else
231 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
232
233 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
234 u32 reg;
235
236 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
237
238 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
239 /* set all bits to 0 except bits 15..12 and 8 */
240 reg &= P_ASPM_CONTROL_MSK;
241 sky2_pci_write32(hw, PCI_DEV_REG4, reg);
242
243 reg = sky2_pci_read32(hw, PCI_DEV_REG5);
244 /* set all bits to 0 except bits 28 & 27 */
245 reg &= P_CTL_TIM_VMAIN_AV_MSK;
246 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
247
248 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
249
250 sky2_write16(hw, B0_CTST, Y2_HW_WOL_ON);
251
252 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
253 reg = sky2_read32(hw, B2_GP_IO);
254 reg |= GLB_GPIO_STAT_RACE_DIS;
255 sky2_write32(hw, B2_GP_IO, reg);
256
257 sky2_read32(hw, B2_GP_IO);
258 }
259
260 /* Turn on "driver loaded" LED */
261 sky2_write16(hw, B0_CTST, Y2_LED_STAT_ON);
262 }
263
264 static void sky2_power_aux(struct sky2_hw *hw)
265 {
266 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
267 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
268 else
269 /* enable bits are inverted */
270 sky2_write8(hw, B2_Y2_CLK_GATE,
271 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
272 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
273 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
274
275 /* switch power to VAUX if supported and PME from D3cold */
276 if ( (sky2_read32(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
277 pci_pme_capable(hw->pdev, PCI_D3cold))
278 sky2_write8(hw, B0_POWER_CTRL,
279 (PC_VAUX_ENA | PC_VCC_ENA |
280 PC_VAUX_ON | PC_VCC_OFF));
281
282 /* turn off "driver loaded LED" */
283 sky2_write16(hw, B0_CTST, Y2_LED_STAT_OFF);
284 }
285
286 static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
287 {
288 u16 reg;
289
290 /* disable all GMAC IRQ's */
291 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
292
293 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
294 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
295 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
296 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
297
298 reg = gma_read16(hw, port, GM_RX_CTRL);
299 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
300 gma_write16(hw, port, GM_RX_CTRL, reg);
301 }
302
303 /* flow control to advertise bits */
304 static const u16 copper_fc_adv[] = {
305 [FC_NONE] = 0,
306 [FC_TX] = PHY_M_AN_ASP,
307 [FC_RX] = PHY_M_AN_PC,
308 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
309 };
310
311 /* flow control to advertise bits when using 1000BaseX */
312 static const u16 fiber_fc_adv[] = {
313 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
314 [FC_TX] = PHY_M_P_ASYM_MD_X,
315 [FC_RX] = PHY_M_P_SYM_MD_X,
316 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
317 };
318
319 /* flow control to GMA disable bits */
320 static const u16 gm_fc_disable[] = {
321 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
322 [FC_TX] = GM_GPCR_FC_RX_DIS,
323 [FC_RX] = GM_GPCR_FC_TX_DIS,
324 [FC_BOTH] = 0,
325 };
326
327
328 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
329 {
330 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
331 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
332
333 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
334 !(hw->flags & SKY2_HW_NEWER_PHY)) {
335 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
336
337 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
338 PHY_M_EC_MAC_S_MSK);
339 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
340
341 /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
342 if (hw->chip_id == CHIP_ID_YUKON_EC)
343 /* set downshift counter to 3x and enable downshift */
344 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
345 else
346 /* set master & slave downshift counter to 1x */
347 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
348
349 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
350 }
351
352 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
353 if (sky2_is_copper(hw)) {
354 if (!(hw->flags & SKY2_HW_GIGABIT)) {
355 /* enable automatic crossover */
356 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
357
358 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
359 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
360 u16 spec;
361
362 /* Enable Class A driver for FE+ A0 */
363 spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2);
364 spec |= PHY_M_FESC_SEL_CL_A;
365 gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec);
366 }
367 } else {
368 if (hw->chip_id >= CHIP_ID_YUKON_OPT) {
369 u16 ctrl2 = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL_2);
370
371 /* enable PHY Reverse Auto-Negotiation */
372 ctrl2 |= 1u << 13;
373
374 /* Write PHY changes (SW-reset must follow) */
375 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL_2, ctrl2);
376 }
377
378
379 /* disable energy detect */
380 ctrl &= ~PHY_M_PC_EN_DET_MSK;
381
382 /* enable automatic crossover */
383 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
384
385 /* downshift on PHY 88E1112 and 88E1149 is changed */
386 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
387 (hw->flags & SKY2_HW_NEWER_PHY)) {
388 /* set downshift counter to 3x and enable downshift */
389 ctrl &= ~PHY_M_PC_DSC_MSK;
390 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
391 }
392 }
393 } else {
394 /* workaround for deviation #4.88 (CRC errors) */
395 /* disable Automatic Crossover */
396
397 ctrl &= ~PHY_M_PC_MDIX_MSK;
398 }
399
400 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
401
402 /* special setup for PHY 88E1112 Fiber */
403 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
404 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
405
406 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
407 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
408 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
409 ctrl &= ~PHY_M_MAC_MD_MSK;
410 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
411 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
412
413 if (hw->pmd_type == 'P') {
414 /* select page 1 to access Fiber registers */
415 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
416
417 /* for SFP-module set SIGDET polarity to low */
418 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
419 ctrl |= PHY_M_FIB_SIGD_POL;
420 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
421 }
422
423 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
424 }
425
426 ctrl = PHY_CT_RESET;
427 ct1000 = 0;
428 adv = PHY_AN_CSMA;
429 reg = 0;
430
431 if (sky2->flags & SKY2_FLAG_AUTO_SPEED) {
432 if (sky2_is_copper(hw)) {
433 if (sky2->advertising & ADVERTISED_1000baseT_Full)
434 ct1000 |= PHY_M_1000C_AFD;
435 if (sky2->advertising & ADVERTISED_1000baseT_Half)
436 ct1000 |= PHY_M_1000C_AHD;
437 if (sky2->advertising & ADVERTISED_100baseT_Full)
438 adv |= PHY_M_AN_100_FD;
439 if (sky2->advertising & ADVERTISED_100baseT_Half)
440 adv |= PHY_M_AN_100_HD;
441 if (sky2->advertising & ADVERTISED_10baseT_Full)
442 adv |= PHY_M_AN_10_FD;
443 if (sky2->advertising & ADVERTISED_10baseT_Half)
444 adv |= PHY_M_AN_10_HD;
445
446 } else { /* special defines for FIBER (88E1040S only) */
447 if (sky2->advertising & ADVERTISED_1000baseT_Full)
448 adv |= PHY_M_AN_1000X_AFD;
449 if (sky2->advertising & ADVERTISED_1000baseT_Half)
450 adv |= PHY_M_AN_1000X_AHD;
451 }
452
453 /* Restart Auto-negotiation */
454 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
455 } else {
456 /* forced speed/duplex settings */
457 ct1000 = PHY_M_1000C_MSE;
458
459 /* Disable auto update for duplex flow control and duplex */
460 reg |= GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_SPD_DIS;
461
462 switch (sky2->speed) {
463 case SPEED_1000:
464 ctrl |= PHY_CT_SP1000;
465 reg |= GM_GPCR_SPEED_1000;
466 break;
467 case SPEED_100:
468 ctrl |= PHY_CT_SP100;
469 reg |= GM_GPCR_SPEED_100;
470 break;
471 }
472
473 if (sky2->duplex == DUPLEX_FULL) {
474 reg |= GM_GPCR_DUP_FULL;
475 ctrl |= PHY_CT_DUP_MD;
476 } else if (sky2->speed < SPEED_1000)
477 sky2->flow_mode = FC_NONE;
478 }
479
480 if (sky2->flags & SKY2_FLAG_AUTO_PAUSE) {
481 if (sky2_is_copper(hw))
482 adv |= copper_fc_adv[sky2->flow_mode];
483 else
484 adv |= fiber_fc_adv[sky2->flow_mode];
485 } else {
486 reg |= GM_GPCR_AU_FCT_DIS;
487 reg |= gm_fc_disable[sky2->flow_mode];
488
489 /* Forward pause packets to GMAC? */
490 if (sky2->flow_mode & FC_RX)
491 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
492 else
493 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
494 }
495
496 gma_write16(hw, port, GM_GP_CTRL, reg);
497
498 if (hw->flags & SKY2_HW_GIGABIT)
499 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
500
501 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
502 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
503
504 /* Setup Phy LED's */
505 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
506 ledover = 0;
507
508 switch (hw->chip_id) {
509 case CHIP_ID_YUKON_FE:
510 /* on 88E3082 these bits are at 11..9 (shifted left) */
511 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
512
513 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
514
515 /* delete ACT LED control bits */
516 ctrl &= ~PHY_M_FELP_LED1_MSK;
517 /* change ACT LED control to blink mode */
518 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
519 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
520 break;
521
522 case CHIP_ID_YUKON_FE_P:
523 /* Enable Link Partner Next Page */
524 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
525 ctrl |= PHY_M_PC_ENA_LIP_NP;
526
527 /* disable Energy Detect and enable scrambler */
528 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
529 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
530
531 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
532 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
533 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
534 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
535
536 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
537 break;
538
539 case CHIP_ID_YUKON_XL:
540 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
541
542 /* select page 3 to access LED control register */
543 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
544
545 /* set LED Function Control register */
546 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
547 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
548 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
549 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
550 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
551
552 /* set Polarity Control register */
553 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
554 (PHY_M_POLC_LS1_P_MIX(4) |
555 PHY_M_POLC_IS0_P_MIX(4) |
556 PHY_M_POLC_LOS_CTRL(2) |
557 PHY_M_POLC_INIT_CTRL(2) |
558 PHY_M_POLC_STA1_CTRL(2) |
559 PHY_M_POLC_STA0_CTRL(2)));
560
561 /* restore page register */
562 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
563 break;
564
565 case CHIP_ID_YUKON_EC_U:
566 case CHIP_ID_YUKON_EX:
567 case CHIP_ID_YUKON_SUPR:
568 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
569
570 /* select page 3 to access LED control register */
571 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
572
573 /* set LED Function Control register */
574 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
575 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
576 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
577 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
578 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
579
580 /* set Blink Rate in LED Timer Control Register */
581 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
582 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
583 /* restore page register */
584 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
585 break;
586
587 default:
588 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
589 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
590
591 /* turn off the Rx LED (LED_RX) */
592 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
593 }
594
595 if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_UL_2) {
596 /* apply fixes in PHY AFE */
597 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
598
599 /* increase differential signal amplitude in 10BASE-T */
600 gm_phy_write(hw, port, 0x18, 0xaa99);
601 gm_phy_write(hw, port, 0x17, 0x2011);
602
603 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
604 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
605 gm_phy_write(hw, port, 0x18, 0xa204);
606 gm_phy_write(hw, port, 0x17, 0x2002);
607 }
608
609 /* set page register to 0 */
610 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
611 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
612 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
613 /* apply workaround for integrated resistors calibration */
614 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
615 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
616 } else if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
617 /* apply fixes in PHY AFE */
618 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00ff);
619
620 /* apply RDAC termination workaround */
621 gm_phy_write(hw, port, 24, 0x2800);
622 gm_phy_write(hw, port, 23, 0x2001);
623
624 /* set page register back to 0 */
625 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
626 } else if (hw->chip_id != CHIP_ID_YUKON_EX &&
627 hw->chip_id < CHIP_ID_YUKON_SUPR) {
628 /* no effect on Yukon-XL */
629 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
630
631 if (!(sky2->flags & SKY2_FLAG_AUTO_SPEED) ||
632 sky2->speed == SPEED_100) {
633 /* turn on 100 Mbps LED (LED_LINK100) */
634 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
635 }
636
637 if (ledover)
638 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
639
640 } else if (hw->chip_id == CHIP_ID_YUKON_PRM &&
641 (sky2_read8(hw, B2_MAC_CFG) & 0xf) == 0x7) {
642 int i;
643 /* This a phy register setup workaround copied from vendor driver. */
644 static const struct {
645 u16 reg, val;
646 } eee_afe[] = {
647 { 0x156, 0x58ce },
648 { 0x153, 0x99eb },
649 { 0x141, 0x8064 },
650 /* { 0x155, 0x130b },*/
651 { 0x000, 0x0000 },
652 { 0x151, 0x8433 },
653 { 0x14b, 0x8c44 },
654 { 0x14c, 0x0f90 },
655 { 0x14f, 0x39aa },
656 /* { 0x154, 0x2f39 },*/
657 { 0x14d, 0xba33 },
658 { 0x144, 0x0048 },
659 { 0x152, 0x2010 },
660 /* { 0x158, 0x1223 },*/
661 { 0x140, 0x4444 },
662 { 0x154, 0x2f3b },
663 { 0x158, 0xb203 },
664 { 0x157, 0x2029 },
665 };
666
667 /* Start Workaround for OptimaEEE Rev.Z0 */
668 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00fb);
669
670 gm_phy_write(hw, port, 1, 0x4099);
671 gm_phy_write(hw, port, 3, 0x1120);
672 gm_phy_write(hw, port, 11, 0x113c);
673 gm_phy_write(hw, port, 14, 0x8100);
674 gm_phy_write(hw, port, 15, 0x112a);
675 gm_phy_write(hw, port, 17, 0x1008);
676
677 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00fc);
678 gm_phy_write(hw, port, 1, 0x20b0);
679
680 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00ff);
681
682 for (i = 0; i < ARRAY_SIZE(eee_afe); i++) {
683 /* apply AFE settings */
684 gm_phy_write(hw, port, 17, eee_afe[i].val);
685 gm_phy_write(hw, port, 16, eee_afe[i].reg | 1u<<13);
686 }
687
688 /* End Workaround for OptimaEEE */
689 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
690
691 /* Enable 10Base-Te (EEE) */
692 if (hw->chip_id >= CHIP_ID_YUKON_PRM) {
693 reg = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
694 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL,
695 reg | PHY_M_10B_TE_ENABLE);
696 }
697 }
698
699 /* Enable phy interrupt on auto-negotiation complete (or link up) */
700 if (sky2->flags & SKY2_FLAG_AUTO_SPEED)
701 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
702 else
703 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
704 }
705
706 static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
707 static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
708
709 static void sky2_phy_power_up(struct sky2_hw *hw, unsigned port)
710 {
711 u32 reg1;
712
713 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
714 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
715 reg1 &= ~phy_power[port];
716
717 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
718 reg1 |= coma_mode[port];
719
720 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
721 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
722 sky2_pci_read32(hw, PCI_DEV_REG1);
723
724 if (hw->chip_id == CHIP_ID_YUKON_FE)
725 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_ANE);
726 else if (hw->flags & SKY2_HW_ADV_POWER_CTL)
727 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
728 }
729
730 static void sky2_phy_power_down(struct sky2_hw *hw, unsigned port)
731 {
732 u32 reg1;
733 u16 ctrl;
734
735 /* release GPHY Control reset */
736 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
737
738 /* release GMAC reset */
739 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
740
741 if (hw->flags & SKY2_HW_NEWER_PHY) {
742 /* select page 2 to access MAC control register */
743 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
744
745 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
746 /* allow GMII Power Down */
747 ctrl &= ~PHY_M_MAC_GMIF_PUP;
748 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
749
750 /* set page register back to 0 */
751 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
752 }
753
754 /* setup General Purpose Control Register */
755 gma_write16(hw, port, GM_GP_CTRL,
756 GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 |
757 GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_FCT_DIS |
758 GM_GPCR_AU_SPD_DIS);
759
760 if (hw->chip_id != CHIP_ID_YUKON_EC) {
761 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
762 /* select page 2 to access MAC control register */
763 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
764
765 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
766 /* enable Power Down */
767 ctrl |= PHY_M_PC_POW_D_ENA;
768 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
769
770 /* set page register back to 0 */
771 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
772 }
773
774 /* set IEEE compatible Power Down Mode (dev. #4.99) */
775 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_PDOWN);
776 }
777
778 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
779 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
780 reg1 |= phy_power[port]; /* set PHY to PowerDown/COMA Mode */
781 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
782 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
783 }
784
785 /* configure IPG according to used link speed */
786 static void sky2_set_ipg(struct sky2_port *sky2)
787 {
788 u16 reg;
789
790 reg = gma_read16(sky2->hw, sky2->port, GM_SERIAL_MODE);
791 reg &= ~GM_SMOD_IPG_MSK;
792 if (sky2->speed > SPEED_100)
793 reg |= IPG_DATA_VAL(IPG_DATA_DEF_1000);
794 else
795 reg |= IPG_DATA_VAL(IPG_DATA_DEF_10_100);
796 gma_write16(sky2->hw, sky2->port, GM_SERIAL_MODE, reg);
797 }
798
799 /* Enable Rx/Tx */
800 static void sky2_enable_rx_tx(struct sky2_port *sky2)
801 {
802 struct sky2_hw *hw = sky2->hw;
803 unsigned port = sky2->port;
804 u16 reg;
805
806 reg = gma_read16(hw, port, GM_GP_CTRL);
807 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
808 gma_write16(hw, port, GM_GP_CTRL, reg);
809 }
810
811 /* Force a renegotiation */
812 static void sky2_phy_reinit(struct sky2_port *sky2)
813 {
814 spin_lock_bh(&sky2->phy_lock);
815 sky2_phy_init(sky2->hw, sky2->port);
816 sky2_enable_rx_tx(sky2);
817 spin_unlock_bh(&sky2->phy_lock);
818 }
819
820 /* Put device in state to listen for Wake On Lan */
821 static void sky2_wol_init(struct sky2_port *sky2)
822 {
823 struct sky2_hw *hw = sky2->hw;
824 unsigned port = sky2->port;
825 enum flow_control save_mode;
826 u16 ctrl;
827
828 /* Bring hardware out of reset */
829 sky2_write16(hw, B0_CTST, CS_RST_CLR);
830 sky2_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
831
832 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
833 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
834
835 /* Force to 10/100
836 * sky2_reset will re-enable on resume
837 */
838 save_mode = sky2->flow_mode;
839 ctrl = sky2->advertising;
840
841 sky2->advertising &= ~(ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full);
842 sky2->flow_mode = FC_NONE;
843
844 spin_lock_bh(&sky2->phy_lock);
845 sky2_phy_power_up(hw, port);
846 sky2_phy_init(hw, port);
847 spin_unlock_bh(&sky2->phy_lock);
848
849 sky2->flow_mode = save_mode;
850 sky2->advertising = ctrl;
851
852 /* Set GMAC to no flow control and auto update for speed/duplex */
853 gma_write16(hw, port, GM_GP_CTRL,
854 GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
855 GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
856
857 /* Set WOL address */
858 memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
859 sky2->netdev->dev_addr, ETH_ALEN);
860
861 /* Turn on appropriate WOL control bits */
862 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
863 ctrl = 0;
864 if (sky2->wol & WAKE_PHY)
865 ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
866 else
867 ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
868
869 if (sky2->wol & WAKE_MAGIC)
870 ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
871 else
872 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;
873
874 ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
875 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
876
877 /* Disable PiG firmware */
878 sky2_write16(hw, B0_CTST, Y2_HW_WOL_OFF);
879
880 /* block receiver */
881 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
882 }
883
884 static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
885 {
886 struct net_device *dev = hw->dev[port];
887
888 if ( (hw->chip_id == CHIP_ID_YUKON_EX &&
889 hw->chip_rev != CHIP_REV_YU_EX_A0) ||
890 hw->chip_id >= CHIP_ID_YUKON_FE_P) {
891 /* Yukon-Extreme B0 and further Extreme devices */
892 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
893 } else if (dev->mtu > ETH_DATA_LEN) {
894 /* set Tx GMAC FIFO Almost Empty Threshold */
895 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
896 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
897
898 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
899 } else
900 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
901 }
902
903 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
904 {
905 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
906 u16 reg;
907 u32 rx_reg;
908 int i;
909 const u8 *addr = hw->dev[port]->dev_addr;
910
911 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
912 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
913
914 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
915
916 if (hw->chip_id == CHIP_ID_YUKON_XL &&
917 hw->chip_rev == CHIP_REV_YU_XL_A0 &&
918 port == 1) {
919 /* WA DEV_472 -- looks like crossed wires on port 2 */
920 /* clear GMAC 1 Control reset */
921 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
922 do {
923 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
924 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
925 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
926 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
927 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
928 }
929
930 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
931
932 /* Enable Transmit FIFO Underrun */
933 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
934
935 spin_lock_bh(&sky2->phy_lock);
936 sky2_phy_power_up(hw, port);
937 sky2_phy_init(hw, port);
938 spin_unlock_bh(&sky2->phy_lock);
939
940 /* MIB clear */
941 reg = gma_read16(hw, port, GM_PHY_ADDR);
942 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
943
944 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
945 gma_read16(hw, port, i);
946 gma_write16(hw, port, GM_PHY_ADDR, reg);
947
948 /* transmit control */
949 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
950
951 /* receive control reg: unicast + multicast + no FCS */
952 gma_write16(hw, port, GM_RX_CTRL,
953 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
954
955 /* transmit flow control */
956 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
957
958 /* transmit parameter */
959 gma_write16(hw, port, GM_TX_PARAM,
960 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
961 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
962 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
963 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
964
965 /* serial mode register */
966 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
967 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF_1000);
968
969 if (hw->dev[port]->mtu > ETH_DATA_LEN)
970 reg |= GM_SMOD_JUMBO_ENA;
971
972 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
973 hw->chip_rev == CHIP_REV_YU_EC_U_B1)
974 reg |= GM_NEW_FLOW_CTRL;
975
976 gma_write16(hw, port, GM_SERIAL_MODE, reg);
977
978 /* virtual address for data */
979 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
980
981 /* physical address: used for pause frames */
982 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
983
984 /* ignore counter overflows */
985 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
986 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
987 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
988
989 /* Configure Rx MAC FIFO */
990 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
991 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
992 if (hw->chip_id == CHIP_ID_YUKON_EX ||
993 hw->chip_id == CHIP_ID_YUKON_FE_P)
994 rx_reg |= GMF_RX_OVER_ON;
995
996 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
997
998 if (hw->chip_id == CHIP_ID_YUKON_XL) {
999 /* Hardware errata - clear flush mask */
1000 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0);
1001 } else {
1002 /* Flush Rx MAC FIFO on any flow control or error */
1003 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
1004 }
1005
1006 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
1007 reg = RX_GMF_FL_THR_DEF + 1;
1008 /* Another magic mystery workaround from sk98lin */
1009 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
1010 hw->chip_rev == CHIP_REV_YU_FE2_A0)
1011 reg = 0x178;
1012 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
1013
1014 /* Configure Tx MAC FIFO */
1015 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
1016 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
1017
1018 /* On chips without ram buffer, pause is controlled by MAC level */
1019 if (!(hw->flags & SKY2_HW_RAM_BUFFER)) {
1020 /* Pause threshold is scaled by 8 in bytes */
1021 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
1022 hw->chip_rev == CHIP_REV_YU_FE2_A0)
1023 reg = 1568 / 8;
1024 else
1025 reg = 1024 / 8;
1026 sky2_write16(hw, SK_REG(port, RX_GMF_UP_THR), reg);
1027 sky2_write16(hw, SK_REG(port, RX_GMF_LP_THR), 768 / 8);
1028
1029 sky2_set_tx_stfwd(hw, port);
1030 }
1031
1032 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
1033 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
1034 /* disable dynamic watermark */
1035 reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA));
1036 reg &= ~TX_DYN_WM_ENA;
1037 sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg);
1038 }
1039 }
1040
1041 /* Assign Ram Buffer allocation to queue */
1042 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
1043 {
1044 u32 end;
1045
1046 /* convert from K bytes to qwords used for hw register */
1047 start *= 1024/8;
1048 space *= 1024/8;
1049 end = start + space - 1;
1050
1051 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
1052 sky2_write32(hw, RB_ADDR(q, RB_START), start);
1053 sky2_write32(hw, RB_ADDR(q, RB_END), end);
1054 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
1055 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
1056
1057 if (q == Q_R1 || q == Q_R2) {
1058 u32 tp = space - space/4;
1059
1060 /* On receive queue's set the thresholds
1061 * give receiver priority when > 3/4 full
1062 * send pause when down to 2K
1063 */
1064 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
1065 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
1066
1067 tp = space - 2048/8;
1068 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
1069 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
1070 } else {
1071 /* Enable store & forward on Tx queue's because
1072 * Tx FIFO is only 1K on Yukon
1073 */
1074 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
1075 }
1076
1077 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
1078 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
1079 }
1080
1081 /* Setup Bus Memory Interface */
1082 static void sky2_qset(struct sky2_hw *hw, u16 q)
1083 {
1084 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
1085 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
1086 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
1087 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
1088 }
1089
1090 /* Setup prefetch unit registers. This is the interface between
1091 * hardware and driver list elements
1092 */
1093 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
1094 dma_addr_t addr, u32 last)
1095 {
1096 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1097 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
1098 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), upper_32_bits(addr));
1099 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), lower_32_bits(addr));
1100 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
1101 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
1102
1103 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
1104 }
1105
1106 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2, u16 *slot)
1107 {
1108 struct sky2_tx_le *le = sky2->tx_le + *slot;
1109
1110 *slot = RING_NEXT(*slot, sky2->tx_ring_size);
1111 le->ctrl = 0;
1112 return le;
1113 }
1114
1115 static void tx_init(struct sky2_port *sky2)
1116 {
1117 struct sky2_tx_le *le;
1118
1119 sky2->tx_prod = sky2->tx_cons = 0;
1120 sky2->tx_tcpsum = 0;
1121 sky2->tx_last_mss = 0;
1122
1123 le = get_tx_le(sky2, &sky2->tx_prod);
1124 le->addr = 0;
1125 le->opcode = OP_ADDR64 | HW_OWNER;
1126 sky2->tx_last_upper = 0;
1127 }
1128
1129 /* Update chip's next pointer */
1130 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
1131 {
1132 /* Make sure write' to descriptors are complete before we tell hardware */
1133 wmb();
1134 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
1135
1136 /* Synchronize I/O on since next processor may write to tail */
1137 mmiowb();
1138 }
1139
1140
1141 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
1142 {
1143 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
1144 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
1145 le->ctrl = 0;
1146 return le;
1147 }
1148
1149 static unsigned sky2_get_rx_threshold(struct sky2_port *sky2)
1150 {
1151 unsigned size;
1152
1153 /* Space needed for frame data + headers rounded up */
1154 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1155
1156 /* Stopping point for hardware truncation */
1157 return (size - 8) / sizeof(u32);
1158 }
1159
1160 static unsigned sky2_get_rx_data_size(struct sky2_port *sky2)
1161 {
1162 struct rx_ring_info *re;
1163 unsigned size;
1164
1165 /* Space needed for frame data + headers rounded up */
1166 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1167
1168 sky2->rx_nfrags = size >> PAGE_SHIFT;
1169 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1170
1171 /* Compute residue after pages */
1172 size -= sky2->rx_nfrags << PAGE_SHIFT;
1173
1174 /* Optimize to handle small packets and headers */
1175 if (size < copybreak)
1176 size = copybreak;
1177 if (size < ETH_HLEN)
1178 size = ETH_HLEN;
1179
1180 return size;
1181 }
1182
1183 /* Build description to hardware for one receive segment */
1184 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
1185 dma_addr_t map, unsigned len)
1186 {
1187 struct sky2_rx_le *le;
1188
1189 if (sizeof(dma_addr_t) > sizeof(u32)) {
1190 le = sky2_next_rx(sky2);
1191 le->addr = cpu_to_le32(upper_32_bits(map));
1192 le->opcode = OP_ADDR64 | HW_OWNER;
1193 }
1194
1195 le = sky2_next_rx(sky2);
1196 le->addr = cpu_to_le32(lower_32_bits(map));
1197 le->length = cpu_to_le16(len);
1198 le->opcode = op | HW_OWNER;
1199 }
1200
1201 /* Build description to hardware for one possibly fragmented skb */
1202 static void sky2_rx_submit(struct sky2_port *sky2,
1203 const struct rx_ring_info *re)
1204 {
1205 int i;
1206
1207 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
1208
1209 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
1210 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
1211 }
1212
1213
1214 static int sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
1215 unsigned size)
1216 {
1217 struct sk_buff *skb = re->skb;
1218 int i;
1219
1220 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
1221 if (pci_dma_mapping_error(pdev, re->data_addr))
1222 goto mapping_error;
1223
1224 dma_unmap_len_set(re, data_size, size);
1225
1226 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1227 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1228
1229 re->frag_addr[i] = pci_map_page(pdev, frag->page,
1230 frag->page_offset,
1231 frag->size,
1232 PCI_DMA_FROMDEVICE);
1233
1234 if (pci_dma_mapping_error(pdev, re->frag_addr[i]))
1235 goto map_page_error;
1236 }
1237 return 0;
1238
1239 map_page_error:
1240 while (--i >= 0) {
1241 pci_unmap_page(pdev, re->frag_addr[i],
1242 skb_shinfo(skb)->frags[i].size,
1243 PCI_DMA_FROMDEVICE);
1244 }
1245
1246 pci_unmap_single(pdev, re->data_addr, dma_unmap_len(re, data_size),
1247 PCI_DMA_FROMDEVICE);
1248
1249 mapping_error:
1250 if (net_ratelimit())
1251 dev_warn(&pdev->dev, "%s: rx mapping error\n",
1252 skb->dev->name);
1253 return -EIO;
1254 }
1255
1256 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1257 {
1258 struct sk_buff *skb = re->skb;
1259 int i;
1260
1261 pci_unmap_single(pdev, re->data_addr, dma_unmap_len(re, data_size),
1262 PCI_DMA_FROMDEVICE);
1263
1264 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1265 pci_unmap_page(pdev, re->frag_addr[i],
1266 skb_shinfo(skb)->frags[i].size,
1267 PCI_DMA_FROMDEVICE);
1268 }
1269
1270 /* Tell chip where to start receive checksum.
1271 * Actually has two checksums, but set both same to avoid possible byte
1272 * order problems.
1273 */
1274 static void rx_set_checksum(struct sky2_port *sky2)
1275 {
1276 struct sky2_rx_le *le = sky2_next_rx(sky2);
1277
1278 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1279 le->ctrl = 0;
1280 le->opcode = OP_TCPSTART | HW_OWNER;
1281
1282 sky2_write32(sky2->hw,
1283 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1284 (sky2->netdev->features & NETIF_F_RXCSUM)
1285 ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
1286 }
1287
1288 /* Enable/disable receive hash calculation (RSS) */
1289 static void rx_set_rss(struct net_device *dev, u32 features)
1290 {
1291 struct sky2_port *sky2 = netdev_priv(dev);
1292 struct sky2_hw *hw = sky2->hw;
1293 int i, nkeys = 4;
1294
1295 /* Supports IPv6 and other modes */
1296 if (hw->flags & SKY2_HW_NEW_LE) {
1297 nkeys = 10;
1298 sky2_write32(hw, SK_REG(sky2->port, RSS_CFG), HASH_ALL);
1299 }
1300
1301 /* Program RSS initial values */
1302 if (features & NETIF_F_RXHASH) {
1303 u32 key[nkeys];
1304
1305 get_random_bytes(key, nkeys * sizeof(u32));
1306 for (i = 0; i < nkeys; i++)
1307 sky2_write32(hw, SK_REG(sky2->port, RSS_KEY + i * 4),
1308 key[i]);
1309
1310 /* Need to turn on (undocumented) flag to make hashing work */
1311 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T),
1312 RX_STFW_ENA);
1313
1314 sky2_write32(hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1315 BMU_ENA_RX_RSS_HASH);
1316 } else
1317 sky2_write32(hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1318 BMU_DIS_RX_RSS_HASH);
1319 }
1320
1321 /*
1322 * The RX Stop command will not work for Yukon-2 if the BMU does not
1323 * reach the end of packet and since we can't make sure that we have
1324 * incoming data, we must reset the BMU while it is not doing a DMA
1325 * transfer. Since it is possible that the RX path is still active,
1326 * the RX RAM buffer will be stopped first, so any possible incoming
1327 * data will not trigger a DMA. After the RAM buffer is stopped, the
1328 * BMU is polled until any DMA in progress is ended and only then it
1329 * will be reset.
1330 */
1331 static void sky2_rx_stop(struct sky2_port *sky2)
1332 {
1333 struct sky2_hw *hw = sky2->hw;
1334 unsigned rxq = rxqaddr[sky2->port];
1335 int i;
1336
1337 /* disable the RAM Buffer receive queue */
1338 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1339
1340 for (i = 0; i < 0xffff; i++)
1341 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1342 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1343 goto stopped;
1344
1345 netdev_warn(sky2->netdev, "receiver stop failed\n");
1346 stopped:
1347 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1348
1349 /* reset the Rx prefetch unit */
1350 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1351 mmiowb();
1352 }
1353
1354 /* Clean out receive buffer area, assumes receiver hardware stopped */
1355 static void sky2_rx_clean(struct sky2_port *sky2)
1356 {
1357 unsigned i;
1358
1359 memset(sky2->rx_le, 0, RX_LE_BYTES);
1360 for (i = 0; i < sky2->rx_pending; i++) {
1361 struct rx_ring_info *re = sky2->rx_ring + i;
1362
1363 if (re->skb) {
1364 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1365 kfree_skb(re->skb);
1366 re->skb = NULL;
1367 }
1368 }
1369 }
1370
1371 /* Basic MII support */
1372 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1373 {
1374 struct mii_ioctl_data *data = if_mii(ifr);
1375 struct sky2_port *sky2 = netdev_priv(dev);
1376 struct sky2_hw *hw = sky2->hw;
1377 int err = -EOPNOTSUPP;
1378
1379 if (!netif_running(dev))
1380 return -ENODEV; /* Phy still in reset */
1381
1382 switch (cmd) {
1383 case SIOCGMIIPHY:
1384 data->phy_id = PHY_ADDR_MARV;
1385
1386 /* fallthru */
1387 case SIOCGMIIREG: {
1388 u16 val = 0;
1389
1390 spin_lock_bh(&sky2->phy_lock);
1391 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1392 spin_unlock_bh(&sky2->phy_lock);
1393
1394 data->val_out = val;
1395 break;
1396 }
1397
1398 case SIOCSMIIREG:
1399 spin_lock_bh(&sky2->phy_lock);
1400 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1401 data->val_in);
1402 spin_unlock_bh(&sky2->phy_lock);
1403 break;
1404 }
1405 return err;
1406 }
1407
1408 #define SKY2_VLAN_OFFLOADS (NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO)
1409
1410 static void sky2_vlan_mode(struct net_device *dev, u32 features)
1411 {
1412 struct sky2_port *sky2 = netdev_priv(dev);
1413 struct sky2_hw *hw = sky2->hw;
1414 u16 port = sky2->port;
1415
1416 if (features & NETIF_F_HW_VLAN_RX)
1417 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1418 RX_VLAN_STRIP_ON);
1419 else
1420 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1421 RX_VLAN_STRIP_OFF);
1422
1423 if (features & NETIF_F_HW_VLAN_TX) {
1424 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1425 TX_VLAN_TAG_ON);
1426
1427 dev->vlan_features |= SKY2_VLAN_OFFLOADS;
1428 } else {
1429 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1430 TX_VLAN_TAG_OFF);
1431
1432 /* Can't do transmit offload of vlan without hw vlan */
1433 dev->vlan_features &= ~SKY2_VLAN_OFFLOADS;
1434 }
1435 }
1436
1437 /* Amount of required worst case padding in rx buffer */
1438 static inline unsigned sky2_rx_pad(const struct sky2_hw *hw)
1439 {
1440 return (hw->flags & SKY2_HW_RAM_BUFFER) ? 8 : 2;
1441 }
1442
1443 /*
1444 * Allocate an skb for receiving. If the MTU is large enough
1445 * make the skb non-linear with a fragment list of pages.
1446 */
1447 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2, gfp_t gfp)
1448 {
1449 struct sk_buff *skb;
1450 int i;
1451
1452 skb = __netdev_alloc_skb(sky2->netdev,
1453 sky2->rx_data_size + sky2_rx_pad(sky2->hw),
1454 gfp);
1455 if (!skb)
1456 goto nomem;
1457
1458 if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) {
1459 unsigned char *start;
1460 /*
1461 * Workaround for a bug in FIFO that cause hang
1462 * if the FIFO if the receive buffer is not 64 byte aligned.
1463 * The buffer returned from netdev_alloc_skb is
1464 * aligned except if slab debugging is enabled.
1465 */
1466 start = PTR_ALIGN(skb->data, 8);
1467 skb_reserve(skb, start - skb->data);
1468 } else
1469 skb_reserve(skb, NET_IP_ALIGN);
1470
1471 for (i = 0; i < sky2->rx_nfrags; i++) {
1472 struct page *page = alloc_page(gfp);
1473
1474 if (!page)
1475 goto free_partial;
1476 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1477 }
1478
1479 return skb;
1480 free_partial:
1481 kfree_skb(skb);
1482 nomem:
1483 return NULL;
1484 }
1485
1486 static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1487 {
1488 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1489 }
1490
1491 static int sky2_alloc_rx_skbs(struct sky2_port *sky2)
1492 {
1493 struct sky2_hw *hw = sky2->hw;
1494 unsigned i;
1495
1496 sky2->rx_data_size = sky2_get_rx_data_size(sky2);
1497
1498 /* Fill Rx ring */
1499 for (i = 0; i < sky2->rx_pending; i++) {
1500 struct rx_ring_info *re = sky2->rx_ring + i;
1501
1502 re->skb = sky2_rx_alloc(sky2, GFP_KERNEL);
1503 if (!re->skb)
1504 return -ENOMEM;
1505
1506 if (sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size)) {
1507 dev_kfree_skb(re->skb);
1508 re->skb = NULL;
1509 return -ENOMEM;
1510 }
1511 }
1512 return 0;
1513 }
1514
1515 /*
1516 * Setup receiver buffer pool.
1517 * Normal case this ends up creating one list element for skb
1518 * in the receive ring. Worst case if using large MTU and each
1519 * allocation falls on a different 64 bit region, that results
1520 * in 6 list elements per ring entry.
1521 * One element is used for checksum enable/disable, and one
1522 * extra to avoid wrap.
1523 */
1524 static void sky2_rx_start(struct sky2_port *sky2)
1525 {
1526 struct sky2_hw *hw = sky2->hw;
1527 struct rx_ring_info *re;
1528 unsigned rxq = rxqaddr[sky2->port];
1529 unsigned i, thresh;
1530
1531 sky2->rx_put = sky2->rx_next = 0;
1532 sky2_qset(hw, rxq);
1533
1534 /* On PCI express lowering the watermark gives better performance */
1535 if (pci_is_pcie(hw->pdev))
1536 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1537
1538 /* These chips have no ram buffer?
1539 * MAC Rx RAM Read is controlled by hardware */
1540 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1541 hw->chip_rev > CHIP_REV_YU_EC_U_A0)
1542 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1543
1544 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1545
1546 if (!(hw->flags & SKY2_HW_NEW_LE))
1547 rx_set_checksum(sky2);
1548
1549 if (!(hw->flags & SKY2_HW_RSS_BROKEN))
1550 rx_set_rss(sky2->netdev, sky2->netdev->features);
1551
1552 /* submit Rx ring */
1553 for (i = 0; i < sky2->rx_pending; i++) {
1554 re = sky2->rx_ring + i;
1555 sky2_rx_submit(sky2, re);
1556 }
1557
1558 /*
1559 * The receiver hangs if it receives frames larger than the
1560 * packet buffer. As a workaround, truncate oversize frames, but
1561 * the register is limited to 9 bits, so if you do frames > 2052
1562 * you better get the MTU right!
1563 */
1564 thresh = sky2_get_rx_threshold(sky2);
1565 if (thresh > 0x1ff)
1566 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1567 else {
1568 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1569 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1570 }
1571
1572 /* Tell chip about available buffers */
1573 sky2_rx_update(sky2, rxq);
1574
1575 if (hw->chip_id == CHIP_ID_YUKON_EX ||
1576 hw->chip_id == CHIP_ID_YUKON_SUPR) {
1577 /*
1578 * Disable flushing of non ASF packets;
1579 * must be done after initializing the BMUs;
1580 * drivers without ASF support should do this too, otherwise
1581 * it may happen that they cannot run on ASF devices;
1582 * remember that the MAC FIFO isn't reset during initialization.
1583 */
1584 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_MACSEC_FLUSH_OFF);
1585 }
1586
1587 if (hw->chip_id >= CHIP_ID_YUKON_SUPR) {
1588 /* Enable RX Home Address & Routing Header checksum fix */
1589 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_FL_CTRL),
1590 RX_IPV6_SA_MOB_ENA | RX_IPV6_DA_MOB_ENA);
1591
1592 /* Enable TX Home Address & Routing Header checksum fix */
1593 sky2_write32(hw, Q_ADDR(txqaddr[sky2->port], Q_TEST),
1594 TBMU_TEST_HOME_ADD_FIX_EN | TBMU_TEST_ROUTING_ADD_FIX_EN);
1595 }
1596 }
1597
1598 static int sky2_alloc_buffers(struct sky2_port *sky2)
1599 {
1600 struct sky2_hw *hw = sky2->hw;
1601
1602 /* must be power of 2 */
1603 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1604 sky2->tx_ring_size *
1605 sizeof(struct sky2_tx_le),
1606 &sky2->tx_le_map);
1607 if (!sky2->tx_le)
1608 goto nomem;
1609
1610 sky2->tx_ring = kcalloc(sky2->tx_ring_size, sizeof(struct tx_ring_info),
1611 GFP_KERNEL);
1612 if (!sky2->tx_ring)
1613 goto nomem;
1614
1615 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1616 &sky2->rx_le_map);
1617 if (!sky2->rx_le)
1618 goto nomem;
1619 memset(sky2->rx_le, 0, RX_LE_BYTES);
1620
1621 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1622 GFP_KERNEL);
1623 if (!sky2->rx_ring)
1624 goto nomem;
1625
1626 return sky2_alloc_rx_skbs(sky2);
1627 nomem:
1628 return -ENOMEM;
1629 }
1630
1631 static void sky2_free_buffers(struct sky2_port *sky2)
1632 {
1633 struct sky2_hw *hw = sky2->hw;
1634
1635 sky2_rx_clean(sky2);
1636
1637 if (sky2->rx_le) {
1638 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1639 sky2->rx_le, sky2->rx_le_map);
1640 sky2->rx_le = NULL;
1641 }
1642 if (sky2->tx_le) {
1643 pci_free_consistent(hw->pdev,
1644 sky2->tx_ring_size * sizeof(struct sky2_tx_le),
1645 sky2->tx_le, sky2->tx_le_map);
1646 sky2->tx_le = NULL;
1647 }
1648 kfree(sky2->tx_ring);
1649 kfree(sky2->rx_ring);
1650
1651 sky2->tx_ring = NULL;
1652 sky2->rx_ring = NULL;
1653 }
1654
1655 static void sky2_hw_up(struct sky2_port *sky2)
1656 {
1657 struct sky2_hw *hw = sky2->hw;
1658 unsigned port = sky2->port;
1659 u32 ramsize;
1660 int cap;
1661 struct net_device *otherdev = hw->dev[sky2->port^1];
1662
1663 tx_init(sky2);
1664
1665 /*
1666 * On dual port PCI-X card, there is an problem where status
1667 * can be received out of order due to split transactions
1668 */
1669 if (otherdev && netif_running(otherdev) &&
1670 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1671 u16 cmd;
1672
1673 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1674 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1675 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1676 }
1677
1678 sky2_mac_init(hw, port);
1679
1680 /* Register is number of 4K blocks on internal RAM buffer. */
1681 ramsize = sky2_read8(hw, B2_E_0) * 4;
1682 if (ramsize > 0) {
1683 u32 rxspace;
1684
1685 netdev_dbg(sky2->netdev, "ram buffer %dK\n", ramsize);
1686 if (ramsize < 16)
1687 rxspace = ramsize / 2;
1688 else
1689 rxspace = 8 + (2*(ramsize - 16))/3;
1690
1691 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1692 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1693
1694 /* Make sure SyncQ is disabled */
1695 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1696 RB_RST_SET);
1697 }
1698
1699 sky2_qset(hw, txqaddr[port]);
1700
1701 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1702 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1703 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1704
1705 /* Set almost empty threshold */
1706 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1707 hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1708 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1709
1710 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1711 sky2->tx_ring_size - 1);
1712
1713 sky2_vlan_mode(sky2->netdev, sky2->netdev->features);
1714 netdev_update_features(sky2->netdev);
1715
1716 sky2_rx_start(sky2);
1717 }
1718
1719 /* Bring up network interface. */
1720 static int sky2_up(struct net_device *dev)
1721 {
1722 struct sky2_port *sky2 = netdev_priv(dev);
1723 struct sky2_hw *hw = sky2->hw;
1724 unsigned port = sky2->port;
1725 u32 imask;
1726 int err;
1727
1728 netif_carrier_off(dev);
1729
1730 err = sky2_alloc_buffers(sky2);
1731 if (err)
1732 goto err_out;
1733
1734 sky2_hw_up(sky2);
1735
1736 /* Enable interrupts from phy/mac for port */
1737 imask = sky2_read32(hw, B0_IMSK);
1738 imask |= portirq_msk[port];
1739 sky2_write32(hw, B0_IMSK, imask);
1740 sky2_read32(hw, B0_IMSK);
1741
1742 netif_info(sky2, ifup, dev, "enabling interface\n");
1743
1744 return 0;
1745
1746 err_out:
1747 sky2_free_buffers(sky2);
1748 return err;
1749 }
1750
1751 /* Modular subtraction in ring */
1752 static inline int tx_inuse(const struct sky2_port *sky2)
1753 {
1754 return (sky2->tx_prod - sky2->tx_cons) & (sky2->tx_ring_size - 1);
1755 }
1756
1757 /* Number of list elements available for next tx */
1758 static inline int tx_avail(const struct sky2_port *sky2)
1759 {
1760 return sky2->tx_pending - tx_inuse(sky2);
1761 }
1762
1763 /* Estimate of number of transmit list elements required */
1764 static unsigned tx_le_req(const struct sk_buff *skb)
1765 {
1766 unsigned count;
1767
1768 count = (skb_shinfo(skb)->nr_frags + 1)
1769 * (sizeof(dma_addr_t) / sizeof(u32));
1770
1771 if (skb_is_gso(skb))
1772 ++count;
1773 else if (sizeof(dma_addr_t) == sizeof(u32))
1774 ++count; /* possible vlan */
1775
1776 if (skb->ip_summed == CHECKSUM_PARTIAL)
1777 ++count;
1778
1779 return count;
1780 }
1781
1782 static void sky2_tx_unmap(struct pci_dev *pdev, struct tx_ring_info *re)
1783 {
1784 if (re->flags & TX_MAP_SINGLE)
1785 pci_unmap_single(pdev, dma_unmap_addr(re, mapaddr),
1786 dma_unmap_len(re, maplen),
1787 PCI_DMA_TODEVICE);
1788 else if (re->flags & TX_MAP_PAGE)
1789 pci_unmap_page(pdev, dma_unmap_addr(re, mapaddr),
1790 dma_unmap_len(re, maplen),
1791 PCI_DMA_TODEVICE);
1792 re->flags = 0;
1793 }
1794
1795 /*
1796 * Put one packet in ring for transmit.
1797 * A single packet can generate multiple list elements, and
1798 * the number of ring elements will probably be less than the number
1799 * of list elements used.
1800 */
1801 static netdev_tx_t sky2_xmit_frame(struct sk_buff *skb,
1802 struct net_device *dev)
1803 {
1804 struct sky2_port *sky2 = netdev_priv(dev);
1805 struct sky2_hw *hw = sky2->hw;
1806 struct sky2_tx_le *le = NULL;
1807 struct tx_ring_info *re;
1808 unsigned i, len;
1809 dma_addr_t mapping;
1810 u32 upper;
1811 u16 slot;
1812 u16 mss;
1813 u8 ctrl;
1814
1815 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1816 return NETDEV_TX_BUSY;
1817
1818 len = skb_headlen(skb);
1819 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1820
1821 if (pci_dma_mapping_error(hw->pdev, mapping))
1822 goto mapping_error;
1823
1824 slot = sky2->tx_prod;
1825 netif_printk(sky2, tx_queued, KERN_DEBUG, dev,
1826 "tx queued, slot %u, len %d\n", slot, skb->len);
1827
1828 /* Send high bits if needed */
1829 upper = upper_32_bits(mapping);
1830 if (upper != sky2->tx_last_upper) {
1831 le = get_tx_le(sky2, &slot);
1832 le->addr = cpu_to_le32(upper);
1833 sky2->tx_last_upper = upper;
1834 le->opcode = OP_ADDR64 | HW_OWNER;
1835 }
1836
1837 /* Check for TCP Segmentation Offload */
1838 mss = skb_shinfo(skb)->gso_size;
1839 if (mss != 0) {
1840
1841 if (!(hw->flags & SKY2_HW_NEW_LE))
1842 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1843
1844 if (mss != sky2->tx_last_mss) {
1845 le = get_tx_le(sky2, &slot);
1846 le->addr = cpu_to_le32(mss);
1847
1848 if (hw->flags & SKY2_HW_NEW_LE)
1849 le->opcode = OP_MSS | HW_OWNER;
1850 else
1851 le->opcode = OP_LRGLEN | HW_OWNER;
1852 sky2->tx_last_mss = mss;
1853 }
1854 }
1855
1856 ctrl = 0;
1857
1858 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1859 if (vlan_tx_tag_present(skb)) {
1860 if (!le) {
1861 le = get_tx_le(sky2, &slot);
1862 le->addr = 0;
1863 le->opcode = OP_VLAN|HW_OWNER;
1864 } else
1865 le->opcode |= OP_VLAN;
1866 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1867 ctrl |= INS_VLAN;
1868 }
1869
1870 /* Handle TCP checksum offload */
1871 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1872 /* On Yukon EX (some versions) encoding change. */
1873 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1874 ctrl |= CALSUM; /* auto checksum */
1875 else {
1876 const unsigned offset = skb_transport_offset(skb);
1877 u32 tcpsum;
1878
1879 tcpsum = offset << 16; /* sum start */
1880 tcpsum |= offset + skb->csum_offset; /* sum write */
1881
1882 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1883 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1884 ctrl |= UDPTCP;
1885
1886 if (tcpsum != sky2->tx_tcpsum) {
1887 sky2->tx_tcpsum = tcpsum;
1888
1889 le = get_tx_le(sky2, &slot);
1890 le->addr = cpu_to_le32(tcpsum);
1891 le->length = 0; /* initial checksum value */
1892 le->ctrl = 1; /* one packet */
1893 le->opcode = OP_TCPLISW | HW_OWNER;
1894 }
1895 }
1896 }
1897
1898 re = sky2->tx_ring + slot;
1899 re->flags = TX_MAP_SINGLE;
1900 dma_unmap_addr_set(re, mapaddr, mapping);
1901 dma_unmap_len_set(re, maplen, len);
1902
1903 le = get_tx_le(sky2, &slot);
1904 le->addr = cpu_to_le32(lower_32_bits(mapping));
1905 le->length = cpu_to_le16(len);
1906 le->ctrl = ctrl;
1907 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1908
1909
1910 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1911 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1912
1913 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1914 frag->size, PCI_DMA_TODEVICE);
1915
1916 if (pci_dma_mapping_error(hw->pdev, mapping))
1917 goto mapping_unwind;
1918
1919 upper = upper_32_bits(mapping);
1920 if (upper != sky2->tx_last_upper) {
1921 le = get_tx_le(sky2, &slot);
1922 le->addr = cpu_to_le32(upper);
1923 sky2->tx_last_upper = upper;
1924 le->opcode = OP_ADDR64 | HW_OWNER;
1925 }
1926
1927 re = sky2->tx_ring + slot;
1928 re->flags = TX_MAP_PAGE;
1929 dma_unmap_addr_set(re, mapaddr, mapping);
1930 dma_unmap_len_set(re, maplen, frag->size);
1931
1932 le = get_tx_le(sky2, &slot);
1933 le->addr = cpu_to_le32(lower_32_bits(mapping));
1934 le->length = cpu_to_le16(frag->size);
1935 le->ctrl = ctrl;
1936 le->opcode = OP_BUFFER | HW_OWNER;
1937 }
1938
1939 re->skb = skb;
1940 le->ctrl |= EOP;
1941
1942 sky2->tx_prod = slot;
1943
1944 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1945 netif_stop_queue(dev);
1946
1947 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1948
1949 return NETDEV_TX_OK;
1950
1951 mapping_unwind:
1952 for (i = sky2->tx_prod; i != slot; i = RING_NEXT(i, sky2->tx_ring_size)) {
1953 re = sky2->tx_ring + i;
1954
1955 sky2_tx_unmap(hw->pdev, re);
1956 }
1957
1958 mapping_error:
1959 if (net_ratelimit())
1960 dev_warn(&hw->pdev->dev, "%s: tx mapping error\n", dev->name);
1961 dev_kfree_skb(skb);
1962 return NETDEV_TX_OK;
1963 }
1964
1965 /*
1966 * Free ring elements from starting at tx_cons until "done"
1967 *
1968 * NB:
1969 * 1. The hardware will tell us about partial completion of multi-part
1970 * buffers so make sure not to free skb to early.
1971 * 2. This may run in parallel start_xmit because the it only
1972 * looks at the tail of the queue of FIFO (tx_cons), not
1973 * the head (tx_prod)
1974 */
1975 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1976 {
1977 struct net_device *dev = sky2->netdev;
1978 unsigned idx;
1979
1980 BUG_ON(done >= sky2->tx_ring_size);
1981
1982 for (idx = sky2->tx_cons; idx != done;
1983 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
1984 struct tx_ring_info *re = sky2->tx_ring + idx;
1985 struct sk_buff *skb = re->skb;
1986
1987 sky2_tx_unmap(sky2->hw->pdev, re);
1988
1989 if (skb) {
1990 netif_printk(sky2, tx_done, KERN_DEBUG, dev,
1991 "tx done %u\n", idx);
1992
1993 u64_stats_update_begin(&sky2->tx_stats.syncp);
1994 ++sky2->tx_stats.packets;
1995 sky2->tx_stats.bytes += skb->len;
1996 u64_stats_update_end(&sky2->tx_stats.syncp);
1997
1998 re->skb = NULL;
1999 dev_kfree_skb_any(skb);
2000
2001 sky2->tx_next = RING_NEXT(idx, sky2->tx_ring_size);
2002 }
2003 }
2004
2005 sky2->tx_cons = idx;
2006 smp_mb();
2007 }
2008
2009 static void sky2_tx_reset(struct sky2_hw *hw, unsigned port)
2010 {
2011 /* Disable Force Sync bit and Enable Alloc bit */
2012 sky2_write8(hw, SK_REG(port, TXA_CTRL),
2013 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
2014
2015 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
2016 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
2017 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
2018
2019 /* Reset the PCI FIFO of the async Tx queue */
2020 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
2021 BMU_RST_SET | BMU_FIFO_RST);
2022
2023 /* Reset the Tx prefetch units */
2024 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
2025 PREF_UNIT_RST_SET);
2026
2027 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
2028 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
2029 }
2030
2031 static void sky2_hw_down(struct sky2_port *sky2)
2032 {
2033 struct sky2_hw *hw = sky2->hw;
2034 unsigned port = sky2->port;
2035 u16 ctrl;
2036
2037 /* Force flow control off */
2038 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2039
2040 /* Stop transmitter */
2041 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
2042 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
2043
2044 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
2045 RB_RST_SET | RB_DIS_OP_MD);
2046
2047 ctrl = gma_read16(hw, port, GM_GP_CTRL);
2048 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
2049 gma_write16(hw, port, GM_GP_CTRL, ctrl);
2050
2051 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
2052
2053 /* Workaround shared GMAC reset */
2054 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 &&
2055 port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
2056 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
2057
2058 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
2059
2060 /* Force any delayed status interrrupt and NAPI */
2061 sky2_write32(hw, STAT_LEV_TIMER_CNT, 0);
2062 sky2_write32(hw, STAT_TX_TIMER_CNT, 0);
2063 sky2_write32(hw, STAT_ISR_TIMER_CNT, 0);
2064 sky2_read8(hw, STAT_ISR_TIMER_CTRL);
2065
2066 sky2_rx_stop(sky2);
2067
2068 spin_lock_bh(&sky2->phy_lock);
2069 sky2_phy_power_down(hw, port);
2070 spin_unlock_bh(&sky2->phy_lock);
2071
2072 sky2_tx_reset(hw, port);
2073
2074 /* Free any pending frames stuck in HW queue */
2075 sky2_tx_complete(sky2, sky2->tx_prod);
2076 }
2077
2078 /* Network shutdown */
2079 static int sky2_down(struct net_device *dev)
2080 {
2081 struct sky2_port *sky2 = netdev_priv(dev);
2082 struct sky2_hw *hw = sky2->hw;
2083
2084 /* Never really got started! */
2085 if (!sky2->tx_le)
2086 return 0;
2087
2088 netif_info(sky2, ifdown, dev, "disabling interface\n");
2089
2090 /* Disable port IRQ */
2091 sky2_write32(hw, B0_IMSK,
2092 sky2_read32(hw, B0_IMSK) & ~portirq_msk[sky2->port]);
2093 sky2_read32(hw, B0_IMSK);
2094
2095 synchronize_irq(hw->pdev->irq);
2096 napi_synchronize(&hw->napi);
2097
2098 sky2_hw_down(sky2);
2099
2100 sky2_free_buffers(sky2);
2101
2102 return 0;
2103 }
2104
2105 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
2106 {
2107 if (hw->flags & SKY2_HW_FIBRE_PHY)
2108 return SPEED_1000;
2109
2110 if (!(hw->flags & SKY2_HW_GIGABIT)) {
2111 if (aux & PHY_M_PS_SPEED_100)
2112 return SPEED_100;
2113 else
2114 return SPEED_10;
2115 }
2116
2117 switch (aux & PHY_M_PS_SPEED_MSK) {
2118 case PHY_M_PS_SPEED_1000:
2119 return SPEED_1000;
2120 case PHY_M_PS_SPEED_100:
2121 return SPEED_100;
2122 default:
2123 return SPEED_10;
2124 }
2125 }
2126
2127 static void sky2_link_up(struct sky2_port *sky2)
2128 {
2129 struct sky2_hw *hw = sky2->hw;
2130 unsigned port = sky2->port;
2131 static const char *fc_name[] = {
2132 [FC_NONE] = "none",
2133 [FC_TX] = "tx",
2134 [FC_RX] = "rx",
2135 [FC_BOTH] = "both",
2136 };
2137
2138 sky2_set_ipg(sky2);
2139
2140 sky2_enable_rx_tx(sky2);
2141
2142 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
2143
2144 netif_carrier_on(sky2->netdev);
2145
2146 mod_timer(&hw->watchdog_timer, jiffies + 1);
2147
2148 /* Turn on link LED */
2149 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
2150 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
2151
2152 netif_info(sky2, link, sky2->netdev,
2153 "Link is up at %d Mbps, %s duplex, flow control %s\n",
2154 sky2->speed,
2155 sky2->duplex == DUPLEX_FULL ? "full" : "half",
2156 fc_name[sky2->flow_status]);
2157 }
2158
2159 static void sky2_link_down(struct sky2_port *sky2)
2160 {
2161 struct sky2_hw *hw = sky2->hw;
2162 unsigned port = sky2->port;
2163 u16 reg;
2164
2165 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
2166
2167 reg = gma_read16(hw, port, GM_GP_CTRL);
2168 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
2169 gma_write16(hw, port, GM_GP_CTRL, reg);
2170
2171 netif_carrier_off(sky2->netdev);
2172
2173 /* Turn off link LED */
2174 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
2175
2176 netif_info(sky2, link, sky2->netdev, "Link is down\n");
2177
2178 sky2_phy_init(hw, port);
2179 }
2180
2181 static enum flow_control sky2_flow(int rx, int tx)
2182 {
2183 if (rx)
2184 return tx ? FC_BOTH : FC_RX;
2185 else
2186 return tx ? FC_TX : FC_NONE;
2187 }
2188
2189 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
2190 {
2191 struct sky2_hw *hw = sky2->hw;
2192 unsigned port = sky2->port;
2193 u16 advert, lpa;
2194
2195 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
2196 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
2197 if (lpa & PHY_M_AN_RF) {
2198 netdev_err(sky2->netdev, "remote fault\n");
2199 return -1;
2200 }
2201
2202 if (!(aux & PHY_M_PS_SPDUP_RES)) {
2203 netdev_err(sky2->netdev, "speed/duplex mismatch\n");
2204 return -1;
2205 }
2206
2207 sky2->speed = sky2_phy_speed(hw, aux);
2208 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2209
2210 /* Since the pause result bits seem to in different positions on
2211 * different chips. look at registers.
2212 */
2213 if (hw->flags & SKY2_HW_FIBRE_PHY) {
2214 /* Shift for bits in fiber PHY */
2215 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
2216 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
2217
2218 if (advert & ADVERTISE_1000XPAUSE)
2219 advert |= ADVERTISE_PAUSE_CAP;
2220 if (advert & ADVERTISE_1000XPSE_ASYM)
2221 advert |= ADVERTISE_PAUSE_ASYM;
2222 if (lpa & LPA_1000XPAUSE)
2223 lpa |= LPA_PAUSE_CAP;
2224 if (lpa & LPA_1000XPAUSE_ASYM)
2225 lpa |= LPA_PAUSE_ASYM;
2226 }
2227
2228 sky2->flow_status = FC_NONE;
2229 if (advert & ADVERTISE_PAUSE_CAP) {
2230 if (lpa & LPA_PAUSE_CAP)
2231 sky2->flow_status = FC_BOTH;
2232 else if (advert & ADVERTISE_PAUSE_ASYM)
2233 sky2->flow_status = FC_RX;
2234 } else if (advert & ADVERTISE_PAUSE_ASYM) {
2235 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
2236 sky2->flow_status = FC_TX;
2237 }
2238
2239 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000 &&
2240 !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
2241 sky2->flow_status = FC_NONE;
2242
2243 if (sky2->flow_status & FC_TX)
2244 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2245 else
2246 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2247
2248 return 0;
2249 }
2250
2251 /* Interrupt from PHY */
2252 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
2253 {
2254 struct net_device *dev = hw->dev[port];
2255 struct sky2_port *sky2 = netdev_priv(dev);
2256 u16 istatus, phystat;
2257
2258 if (!netif_running(dev))
2259 return;
2260
2261 spin_lock(&sky2->phy_lock);
2262 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2263 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2264
2265 netif_info(sky2, intr, sky2->netdev, "phy interrupt status 0x%x 0x%x\n",
2266 istatus, phystat);
2267
2268 if (istatus & PHY_M_IS_AN_COMPL) {
2269 if (sky2_autoneg_done(sky2, phystat) == 0 &&
2270 !netif_carrier_ok(dev))
2271 sky2_link_up(sky2);
2272 goto out;
2273 }
2274
2275 if (istatus & PHY_M_IS_LSP_CHANGE)
2276 sky2->speed = sky2_phy_speed(hw, phystat);
2277
2278 if (istatus & PHY_M_IS_DUP_CHANGE)
2279 sky2->duplex =
2280 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2281
2282 if (istatus & PHY_M_IS_LST_CHANGE) {
2283 if (phystat & PHY_M_PS_LINK_UP)
2284 sky2_link_up(sky2);
2285 else
2286 sky2_link_down(sky2);
2287 }
2288 out:
2289 spin_unlock(&sky2->phy_lock);
2290 }
2291
2292 /* Special quick link interrupt (Yukon-2 Optima only) */
2293 static void sky2_qlink_intr(struct sky2_hw *hw)
2294 {
2295 struct sky2_port *sky2 = netdev_priv(hw->dev[0]);
2296 u32 imask;
2297 u16 phy;
2298
2299 /* disable irq */
2300 imask = sky2_read32(hw, B0_IMSK);
2301 imask &= ~Y2_IS_PHY_QLNK;
2302 sky2_write32(hw, B0_IMSK, imask);
2303
2304 /* reset PHY Link Detect */
2305 phy = sky2_pci_read16(hw, PSM_CONFIG_REG4);
2306 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2307 sky2_pci_write16(hw, PSM_CONFIG_REG4, phy | 1);
2308 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2309
2310 sky2_link_up(sky2);
2311 }
2312
2313 /* Transmit timeout is only called if we are running, carrier is up
2314 * and tx queue is full (stopped).
2315 */
2316 static void sky2_tx_timeout(struct net_device *dev)
2317 {
2318 struct sky2_port *sky2 = netdev_priv(dev);
2319 struct sky2_hw *hw = sky2->hw;
2320
2321 netif_err(sky2, timer, dev, "tx timeout\n");
2322
2323 netdev_printk(KERN_DEBUG, dev, "transmit ring %u .. %u report=%u done=%u\n",
2324 sky2->tx_cons, sky2->tx_prod,
2325 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
2326 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
2327
2328 /* can't restart safely under softirq */
2329 schedule_work(&hw->restart_work);
2330 }
2331
2332 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
2333 {
2334 struct sky2_port *sky2 = netdev_priv(dev);
2335 struct sky2_hw *hw = sky2->hw;
2336 unsigned port = sky2->port;
2337 int err;
2338 u16 ctl, mode;
2339 u32 imask;
2340
2341 /* MTU size outside the spec */
2342 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2343 return -EINVAL;
2344
2345 /* MTU > 1500 on yukon FE and FE+ not allowed */
2346 if (new_mtu > ETH_DATA_LEN &&
2347 (hw->chip_id == CHIP_ID_YUKON_FE ||
2348 hw->chip_id == CHIP_ID_YUKON_FE_P))
2349 return -EINVAL;
2350
2351 if (!netif_running(dev)) {
2352 dev->mtu = new_mtu;
2353 netdev_update_features(dev);
2354 return 0;
2355 }
2356
2357 imask = sky2_read32(hw, B0_IMSK);
2358 sky2_write32(hw, B0_IMSK, 0);
2359
2360 dev->trans_start = jiffies; /* prevent tx timeout */
2361 napi_disable(&hw->napi);
2362 netif_tx_disable(dev);
2363
2364 synchronize_irq(hw->pdev->irq);
2365
2366 if (!(hw->flags & SKY2_HW_RAM_BUFFER))
2367 sky2_set_tx_stfwd(hw, port);
2368
2369 ctl = gma_read16(hw, port, GM_GP_CTRL);
2370 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2371 sky2_rx_stop(sky2);
2372 sky2_rx_clean(sky2);
2373
2374 dev->mtu = new_mtu;
2375 netdev_update_features(dev);
2376
2377 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) | GM_SMOD_VLAN_ENA;
2378 if (sky2->speed > SPEED_100)
2379 mode |= IPG_DATA_VAL(IPG_DATA_DEF_1000);
2380 else
2381 mode |= IPG_DATA_VAL(IPG_DATA_DEF_10_100);
2382
2383 if (dev->mtu > ETH_DATA_LEN)
2384 mode |= GM_SMOD_JUMBO_ENA;
2385
2386 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2387
2388 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2389
2390 err = sky2_alloc_rx_skbs(sky2);
2391 if (!err)
2392 sky2_rx_start(sky2);
2393 else
2394 sky2_rx_clean(sky2);
2395 sky2_write32(hw, B0_IMSK, imask);
2396
2397 sky2_read32(hw, B0_Y2_SP_LISR);
2398 napi_enable(&hw->napi);
2399
2400 if (err)
2401 dev_close(dev);
2402 else {
2403 gma_write16(hw, port, GM_GP_CTRL, ctl);
2404
2405 netif_wake_queue(dev);
2406 }
2407
2408 return err;
2409 }
2410
2411 /* For small just reuse existing skb for next receive */
2412 static struct sk_buff *receive_copy(struct sky2_port *sky2,
2413 const struct rx_ring_info *re,
2414 unsigned length)
2415 {
2416 struct sk_buff *skb;
2417
2418 skb = netdev_alloc_skb_ip_align(sky2->netdev, length);
2419 if (likely(skb)) {
2420 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2421 length, PCI_DMA_FROMDEVICE);
2422 skb_copy_from_linear_data(re->skb, skb->data, length);
2423 skb->ip_summed = re->skb->ip_summed;
2424 skb->csum = re->skb->csum;
2425 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2426 length, PCI_DMA_FROMDEVICE);
2427 re->skb->ip_summed = CHECKSUM_NONE;
2428 skb_put(skb, length);
2429 }
2430 return skb;
2431 }
2432
2433 /* Adjust length of skb with fragments to match received data */
2434 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2435 unsigned int length)
2436 {
2437 int i, num_frags;
2438 unsigned int size;
2439
2440 /* put header into skb */
2441 size = min(length, hdr_space);
2442 skb->tail += size;
2443 skb->len += size;
2444 length -= size;
2445
2446 num_frags = skb_shinfo(skb)->nr_frags;
2447 for (i = 0; i < num_frags; i++) {
2448 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2449
2450 if (length == 0) {
2451 /* don't need this page */
2452 __free_page(frag->page);
2453 --skb_shinfo(skb)->nr_frags;
2454 } else {
2455 size = min(length, (unsigned) PAGE_SIZE);
2456
2457 frag->size = size;
2458 skb->data_len += size;
2459 skb->truesize += size;
2460 skb->len += size;
2461 length -= size;
2462 }
2463 }
2464 }
2465
2466 /* Normal packet - take skb from ring element and put in a new one */
2467 static struct sk_buff *receive_new(struct sky2_port *sky2,
2468 struct rx_ring_info *re,
2469 unsigned int length)
2470 {
2471 struct sk_buff *skb;
2472 struct rx_ring_info nre;
2473 unsigned hdr_space = sky2->rx_data_size;
2474
2475 nre.skb = sky2_rx_alloc(sky2, GFP_ATOMIC);
2476 if (unlikely(!nre.skb))
2477 goto nobuf;
2478
2479 if (sky2_rx_map_skb(sky2->hw->pdev, &nre, hdr_space))
2480 goto nomap;
2481
2482 skb = re->skb;
2483 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2484 prefetch(skb->data);
2485 *re = nre;
2486
2487 if (skb_shinfo(skb)->nr_frags)
2488 skb_put_frags(skb, hdr_space, length);
2489 else
2490 skb_put(skb, length);
2491 return skb;
2492
2493 nomap:
2494 dev_kfree_skb(nre.skb);
2495 nobuf:
2496 return NULL;
2497 }
2498
2499 /*
2500 * Receive one packet.
2501 * For larger packets, get new buffer.
2502 */
2503 static struct sk_buff *sky2_receive(struct net_device *dev,
2504 u16 length, u32 status)
2505 {
2506 struct sky2_port *sky2 = netdev_priv(dev);
2507 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2508 struct sk_buff *skb = NULL;
2509 u16 count = (status & GMR_FS_LEN) >> 16;
2510
2511 if (status & GMR_FS_VLAN)
2512 count -= VLAN_HLEN; /* Account for vlan tag */
2513
2514 netif_printk(sky2, rx_status, KERN_DEBUG, dev,
2515 "rx slot %u status 0x%x len %d\n",
2516 sky2->rx_next, status, length);
2517
2518 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2519 prefetch(sky2->rx_ring + sky2->rx_next);
2520
2521 /* This chip has hardware problems that generates bogus status.
2522 * So do only marginal checking and expect higher level protocols
2523 * to handle crap frames.
2524 */
2525 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2526 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2527 length != count)
2528 goto okay;
2529
2530 if (status & GMR_FS_ANY_ERR)
2531 goto error;
2532
2533 if (!(status & GMR_FS_RX_OK))
2534 goto resubmit;
2535
2536 /* if length reported by DMA does not match PHY, packet was truncated */
2537 if (length != count)
2538 goto error;
2539
2540 okay:
2541 if (length < copybreak)
2542 skb = receive_copy(sky2, re, length);
2543 else
2544 skb = receive_new(sky2, re, length);
2545
2546 dev->stats.rx_dropped += (skb == NULL);
2547
2548 resubmit:
2549 sky2_rx_submit(sky2, re);
2550
2551 return skb;
2552
2553 error:
2554 ++dev->stats.rx_errors;
2555
2556 if (net_ratelimit())
2557 netif_info(sky2, rx_err, dev,
2558 "rx error, status 0x%x length %d\n", status, length);
2559
2560 goto resubmit;
2561 }
2562
2563 /* Transmit complete */
2564 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2565 {
2566 struct sky2_port *sky2 = netdev_priv(dev);
2567
2568 if (netif_running(dev)) {
2569 sky2_tx_complete(sky2, last);
2570
2571 /* Wake unless it's detached, and called e.g. from sky2_down() */
2572 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
2573 netif_wake_queue(dev);
2574 }
2575 }
2576
2577 static inline void sky2_skb_rx(const struct sky2_port *sky2,
2578 u32 status, struct sk_buff *skb)
2579 {
2580 if (status & GMR_FS_VLAN)
2581 __vlan_hwaccel_put_tag(skb, be16_to_cpu(sky2->rx_tag));
2582
2583 if (skb->ip_summed == CHECKSUM_NONE)
2584 netif_receive_skb(skb);
2585 else
2586 napi_gro_receive(&sky2->hw->napi, skb);
2587 }
2588
2589 static inline void sky2_rx_done(struct sky2_hw *hw, unsigned port,
2590 unsigned packets, unsigned bytes)
2591 {
2592 struct net_device *dev = hw->dev[port];
2593 struct sky2_port *sky2 = netdev_priv(dev);
2594
2595 if (packets == 0)
2596 return;
2597
2598 u64_stats_update_begin(&sky2->rx_stats.syncp);
2599 sky2->rx_stats.packets += packets;
2600 sky2->rx_stats.bytes += bytes;
2601 u64_stats_update_end(&sky2->rx_stats.syncp);
2602
2603 dev->last_rx = jiffies;
2604 sky2_rx_update(netdev_priv(dev), rxqaddr[port]);
2605 }
2606
2607 static void sky2_rx_checksum(struct sky2_port *sky2, u32 status)
2608 {
2609 /* If this happens then driver assuming wrong format for chip type */
2610 BUG_ON(sky2->hw->flags & SKY2_HW_NEW_LE);
2611
2612 /* Both checksum counters are programmed to start at
2613 * the same offset, so unless there is a problem they
2614 * should match. This failure is an early indication that
2615 * hardware receive checksumming won't work.
2616 */
2617 if (likely((u16)(status >> 16) == (u16)status)) {
2618 struct sk_buff *skb = sky2->rx_ring[sky2->rx_next].skb;
2619 skb->ip_summed = CHECKSUM_COMPLETE;
2620 skb->csum = le16_to_cpu(status);
2621 } else {
2622 dev_notice(&sky2->hw->pdev->dev,
2623 "%s: receive checksum problem (status = %#x)\n",
2624 sky2->netdev->name, status);
2625
2626 /* Disable checksum offload
2627 * It will be reenabled on next ndo_set_features, but if it's
2628 * really broken, will get disabled again
2629 */
2630 sky2->netdev->features &= ~NETIF_F_RXCSUM;
2631 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2632 BMU_DIS_RX_CHKSUM);
2633 }
2634 }
2635
2636 static void sky2_rx_hash(struct sky2_port *sky2, u32 status)
2637 {
2638 struct sk_buff *skb;
2639
2640 skb = sky2->rx_ring[sky2->rx_next].skb;
2641 skb->rxhash = le32_to_cpu(status);
2642 }
2643
2644 /* Process status response ring */
2645 static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
2646 {
2647 int work_done = 0;
2648 unsigned int total_bytes[2] = { 0 };
2649 unsigned int total_packets[2] = { 0 };
2650
2651 rmb();
2652 do {
2653 struct sky2_port *sky2;
2654 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2655 unsigned port;
2656 struct net_device *dev;
2657 struct sk_buff *skb;
2658 u32 status;
2659 u16 length;
2660 u8 opcode = le->opcode;
2661
2662 if (!(opcode & HW_OWNER))
2663 break;
2664
2665 hw->st_idx = RING_NEXT(hw->st_idx, hw->st_size);
2666
2667 port = le->css & CSS_LINK_BIT;
2668 dev = hw->dev[port];
2669 sky2 = netdev_priv(dev);
2670 length = le16_to_cpu(le->length);
2671 status = le32_to_cpu(le->status);
2672
2673 le->opcode = 0;
2674 switch (opcode & ~HW_OWNER) {
2675 case OP_RXSTAT:
2676 total_packets[port]++;
2677 total_bytes[port] += length;
2678
2679 skb = sky2_receive(dev, length, status);
2680 if (!skb)
2681 break;
2682
2683 /* This chip reports checksum status differently */
2684 if (hw->flags & SKY2_HW_NEW_LE) {
2685 if ((dev->features & NETIF_F_RXCSUM) &&
2686 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2687 (le->css & CSS_TCPUDPCSOK))
2688 skb->ip_summed = CHECKSUM_UNNECESSARY;
2689 else
2690 skb->ip_summed = CHECKSUM_NONE;
2691 }
2692
2693 skb->protocol = eth_type_trans(skb, dev);
2694
2695 sky2_skb_rx(sky2, status, skb);
2696
2697 /* Stop after net poll weight */
2698 if (++work_done >= to_do)
2699 goto exit_loop;
2700 break;
2701
2702 case OP_RXVLAN:
2703 sky2->rx_tag = length;
2704 break;
2705
2706 case OP_RXCHKSVLAN:
2707 sky2->rx_tag = length;
2708 /* fall through */
2709 case OP_RXCHKS:
2710 if (likely(dev->features & NETIF_F_RXCSUM))
2711 sky2_rx_checksum(sky2, status);
2712 break;
2713
2714 case OP_RSS_HASH:
2715 sky2_rx_hash(sky2, status);
2716 break;
2717
2718 case OP_TXINDEXLE:
2719 /* TX index reports status for both ports */
2720 sky2_tx_done(hw->dev[0], status & 0xfff);
2721 if (hw->dev[1])
2722 sky2_tx_done(hw->dev[1],
2723 ((status >> 24) & 0xff)
2724 | (u16)(length & 0xf) << 8);
2725 break;
2726
2727 default:
2728 if (net_ratelimit())
2729 pr_warning("unknown status opcode 0x%x\n", opcode);
2730 }
2731 } while (hw->st_idx != idx);
2732
2733 /* Fully processed status ring so clear irq */
2734 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2735
2736 exit_loop:
2737 sky2_rx_done(hw, 0, total_packets[0], total_bytes[0]);
2738 sky2_rx_done(hw, 1, total_packets[1], total_bytes[1]);
2739
2740 return work_done;
2741 }
2742
2743 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2744 {
2745 struct net_device *dev = hw->dev[port];
2746
2747 if (net_ratelimit())
2748 netdev_info(dev, "hw error interrupt status 0x%x\n", status);
2749
2750 if (status & Y2_IS_PAR_RD1) {
2751 if (net_ratelimit())
2752 netdev_err(dev, "ram data read parity error\n");
2753 /* Clear IRQ */
2754 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2755 }
2756
2757 if (status & Y2_IS_PAR_WR1) {
2758 if (net_ratelimit())
2759 netdev_err(dev, "ram data write parity error\n");
2760
2761 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2762 }
2763
2764 if (status & Y2_IS_PAR_MAC1) {
2765 if (net_ratelimit())
2766 netdev_err(dev, "MAC parity error\n");
2767 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2768 }
2769
2770 if (status & Y2_IS_PAR_RX1) {
2771 if (net_ratelimit())
2772 netdev_err(dev, "RX parity error\n");
2773 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2774 }
2775
2776 if (status & Y2_IS_TCP_TXA1) {
2777 if (net_ratelimit())
2778 netdev_err(dev, "TCP segmentation error\n");
2779 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2780 }
2781 }
2782
2783 static void sky2_hw_intr(struct sky2_hw *hw)
2784 {
2785 struct pci_dev *pdev = hw->pdev;
2786 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2787 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2788
2789 status &= hwmsk;
2790
2791 if (status & Y2_IS_TIST_OV)
2792 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2793
2794 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2795 u16 pci_err;
2796
2797 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2798 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2799 if (net_ratelimit())
2800 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
2801 pci_err);
2802
2803 sky2_pci_write16(hw, PCI_STATUS,
2804 pci_err | PCI_STATUS_ERROR_BITS);
2805 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2806 }
2807
2808 if (status & Y2_IS_PCI_EXP) {
2809 /* PCI-Express uncorrectable Error occurred */
2810 u32 err;
2811
2812 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2813 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2814 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2815 0xfffffffful);
2816 if (net_ratelimit())
2817 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
2818
2819 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2820 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2821 }
2822
2823 if (status & Y2_HWE_L1_MASK)
2824 sky2_hw_error(hw, 0, status);
2825 status >>= 8;
2826 if (status & Y2_HWE_L1_MASK)
2827 sky2_hw_error(hw, 1, status);
2828 }
2829
2830 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2831 {
2832 struct net_device *dev = hw->dev[port];
2833 struct sky2_port *sky2 = netdev_priv(dev);
2834 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2835
2836 netif_info(sky2, intr, dev, "mac interrupt status 0x%x\n", status);
2837
2838 if (status & GM_IS_RX_CO_OV)
2839 gma_read16(hw, port, GM_RX_IRQ_SRC);
2840
2841 if (status & GM_IS_TX_CO_OV)
2842 gma_read16(hw, port, GM_TX_IRQ_SRC);
2843
2844 if (status & GM_IS_RX_FF_OR) {
2845 ++dev->stats.rx_fifo_errors;
2846 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2847 }
2848
2849 if (status & GM_IS_TX_FF_UR) {
2850 ++dev->stats.tx_fifo_errors;
2851 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2852 }
2853 }
2854
2855 /* This should never happen it is a bug. */
2856 static void sky2_le_error(struct sky2_hw *hw, unsigned port, u16 q)
2857 {
2858 struct net_device *dev = hw->dev[port];
2859 u16 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2860
2861 dev_err(&hw->pdev->dev, "%s: descriptor error q=%#x get=%u put=%u\n",
2862 dev->name, (unsigned) q, (unsigned) idx,
2863 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2864
2865 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2866 }
2867
2868 static int sky2_rx_hung(struct net_device *dev)
2869 {
2870 struct sky2_port *sky2 = netdev_priv(dev);
2871 struct sky2_hw *hw = sky2->hw;
2872 unsigned port = sky2->port;
2873 unsigned rxq = rxqaddr[port];
2874 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2875 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2876 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2877 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2878
2879 /* If idle and MAC or PCI is stuck */
2880 if (sky2->check.last == dev->last_rx &&
2881 ((mac_rp == sky2->check.mac_rp &&
2882 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2883 /* Check if the PCI RX hang */
2884 (fifo_rp == sky2->check.fifo_rp &&
2885 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2886 netdev_printk(KERN_DEBUG, dev,
2887 "hung mac %d:%d fifo %d (%d:%d)\n",
2888 mac_lev, mac_rp, fifo_lev,
2889 fifo_rp, sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2890 return 1;
2891 } else {
2892 sky2->check.last = dev->last_rx;
2893 sky2->check.mac_rp = mac_rp;
2894 sky2->check.mac_lev = mac_lev;
2895 sky2->check.fifo_rp = fifo_rp;
2896 sky2->check.fifo_lev = fifo_lev;
2897 return 0;
2898 }
2899 }
2900
2901 static void sky2_watchdog(unsigned long arg)
2902 {
2903 struct sky2_hw *hw = (struct sky2_hw *) arg;
2904
2905 /* Check for lost IRQ once a second */
2906 if (sky2_read32(hw, B0_ISRC)) {
2907 napi_schedule(&hw->napi);
2908 } else {
2909 int i, active = 0;
2910
2911 for (i = 0; i < hw->ports; i++) {
2912 struct net_device *dev = hw->dev[i];
2913 if (!netif_running(dev))
2914 continue;
2915 ++active;
2916
2917 /* For chips with Rx FIFO, check if stuck */
2918 if ((hw->flags & SKY2_HW_RAM_BUFFER) &&
2919 sky2_rx_hung(dev)) {
2920 netdev_info(dev, "receiver hang detected\n");
2921 schedule_work(&hw->restart_work);
2922 return;
2923 }
2924 }
2925
2926 if (active == 0)
2927 return;
2928 }
2929
2930 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
2931 }
2932
2933 /* Hardware/software error handling */
2934 static void sky2_err_intr(struct sky2_hw *hw, u32 status)
2935 {
2936 if (net_ratelimit())
2937 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
2938
2939 if (status & Y2_IS_HW_ERR)
2940 sky2_hw_intr(hw);
2941
2942 if (status & Y2_IS_IRQ_MAC1)
2943 sky2_mac_intr(hw, 0);
2944
2945 if (status & Y2_IS_IRQ_MAC2)
2946 sky2_mac_intr(hw, 1);
2947
2948 if (status & Y2_IS_CHK_RX1)
2949 sky2_le_error(hw, 0, Q_R1);
2950
2951 if (status & Y2_IS_CHK_RX2)
2952 sky2_le_error(hw, 1, Q_R2);
2953
2954 if (status & Y2_IS_CHK_TXA1)
2955 sky2_le_error(hw, 0, Q_XA1);
2956
2957 if (status & Y2_IS_CHK_TXA2)
2958 sky2_le_error(hw, 1, Q_XA2);
2959 }
2960
2961 static int sky2_poll(struct napi_struct *napi, int work_limit)
2962 {
2963 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
2964 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2965 int work_done = 0;
2966 u16 idx;
2967
2968 if (unlikely(status & Y2_IS_ERROR))
2969 sky2_err_intr(hw, status);
2970
2971 if (status & Y2_IS_IRQ_PHY1)
2972 sky2_phy_intr(hw, 0);
2973
2974 if (status & Y2_IS_IRQ_PHY2)
2975 sky2_phy_intr(hw, 1);
2976
2977 if (status & Y2_IS_PHY_QLNK)
2978 sky2_qlink_intr(hw);
2979
2980 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
2981 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
2982
2983 if (work_done >= work_limit)
2984 goto done;
2985 }
2986
2987 napi_complete(napi);
2988 sky2_read32(hw, B0_Y2_SP_LISR);
2989 done:
2990
2991 return work_done;
2992 }
2993
2994 static irqreturn_t sky2_intr(int irq, void *dev_id)
2995 {
2996 struct sky2_hw *hw = dev_id;
2997 u32 status;
2998
2999 /* Reading this mask interrupts as side effect */
3000 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
3001 if (status == 0 || status == ~0)
3002 return IRQ_NONE;
3003
3004 prefetch(&hw->st_le[hw->st_idx]);
3005
3006 napi_schedule(&hw->napi);
3007
3008 return IRQ_HANDLED;
3009 }
3010
3011 #ifdef CONFIG_NET_POLL_CONTROLLER
3012 static void sky2_netpoll(struct net_device *dev)
3013 {
3014 struct sky2_port *sky2 = netdev_priv(dev);
3015
3016 napi_schedule(&sky2->hw->napi);
3017 }
3018 #endif
3019
3020 /* Chip internal frequency for clock calculations */
3021 static u32 sky2_mhz(const struct sky2_hw *hw)
3022 {
3023 switch (hw->chip_id) {
3024 case CHIP_ID_YUKON_EC:
3025 case CHIP_ID_YUKON_EC_U:
3026 case CHIP_ID_YUKON_EX:
3027 case CHIP_ID_YUKON_SUPR:
3028 case CHIP_ID_YUKON_UL_2:
3029 case CHIP_ID_YUKON_OPT:
3030 case CHIP_ID_YUKON_PRM:
3031 case CHIP_ID_YUKON_OP_2:
3032 return 125;
3033
3034 case CHIP_ID_YUKON_FE:
3035 return 100;
3036
3037 case CHIP_ID_YUKON_FE_P:
3038 return 50;
3039
3040 case CHIP_ID_YUKON_XL:
3041 return 156;
3042
3043 default:
3044 BUG();
3045 }
3046 }
3047
3048 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
3049 {
3050 return sky2_mhz(hw) * us;
3051 }
3052
3053 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
3054 {
3055 return clk / sky2_mhz(hw);
3056 }
3057
3058
3059 static int __devinit sky2_init(struct sky2_hw *hw)
3060 {
3061 u8 t8;
3062
3063 /* Enable all clocks and check for bad PCI access */
3064 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
3065
3066 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3067
3068 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
3069 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
3070
3071 switch (hw->chip_id) {
3072 case CHIP_ID_YUKON_XL:
3073 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
3074 if (hw->chip_rev < CHIP_REV_YU_XL_A2)
3075 hw->flags |= SKY2_HW_RSS_BROKEN;
3076 break;
3077
3078 case CHIP_ID_YUKON_EC_U:
3079 hw->flags = SKY2_HW_GIGABIT
3080 | SKY2_HW_NEWER_PHY
3081 | SKY2_HW_ADV_POWER_CTL;
3082 break;
3083
3084 case CHIP_ID_YUKON_EX:
3085 hw->flags = SKY2_HW_GIGABIT
3086 | SKY2_HW_NEWER_PHY
3087 | SKY2_HW_NEW_LE
3088 | SKY2_HW_ADV_POWER_CTL
3089 | SKY2_HW_RSS_CHKSUM;
3090
3091 /* New transmit checksum */
3092 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
3093 hw->flags |= SKY2_HW_AUTO_TX_SUM;
3094 break;
3095
3096 case CHIP_ID_YUKON_EC:
3097 /* This rev is really old, and requires untested workarounds */
3098 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
3099 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
3100 return -EOPNOTSUPP;
3101 }
3102 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_RSS_BROKEN;
3103 break;
3104
3105 case CHIP_ID_YUKON_FE:
3106 hw->flags = SKY2_HW_RSS_BROKEN;
3107 break;
3108
3109 case CHIP_ID_YUKON_FE_P:
3110 hw->flags = SKY2_HW_NEWER_PHY
3111 | SKY2_HW_NEW_LE
3112 | SKY2_HW_AUTO_TX_SUM
3113 | SKY2_HW_ADV_POWER_CTL;
3114
3115 /* The workaround for status conflicts VLAN tag detection. */
3116 if (hw->chip_rev == CHIP_REV_YU_FE2_A0)
3117 hw->flags |= SKY2_HW_VLAN_BROKEN | SKY2_HW_RSS_CHKSUM;
3118 break;
3119
3120 case CHIP_ID_YUKON_SUPR:
3121 hw->flags = SKY2_HW_GIGABIT
3122 | SKY2_HW_NEWER_PHY
3123 | SKY2_HW_NEW_LE
3124 | SKY2_HW_AUTO_TX_SUM
3125 | SKY2_HW_ADV_POWER_CTL;
3126
3127 if (hw->chip_rev == CHIP_REV_YU_SU_A0)
3128 hw->flags |= SKY2_HW_RSS_CHKSUM;
3129 break;
3130
3131 case CHIP_ID_YUKON_UL_2:
3132 hw->flags = SKY2_HW_GIGABIT
3133 | SKY2_HW_ADV_POWER_CTL;
3134 break;
3135
3136 case CHIP_ID_YUKON_OPT:
3137 case CHIP_ID_YUKON_PRM:
3138 case CHIP_ID_YUKON_OP_2:
3139 hw->flags = SKY2_HW_GIGABIT
3140 | SKY2_HW_NEW_LE
3141 | SKY2_HW_ADV_POWER_CTL;
3142 break;
3143
3144 default:
3145 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
3146 hw->chip_id);
3147 return -EOPNOTSUPP;
3148 }
3149
3150 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
3151 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
3152 hw->flags |= SKY2_HW_FIBRE_PHY;
3153
3154 hw->ports = 1;
3155 t8 = sky2_read8(hw, B2_Y2_HW_RES);
3156 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
3157 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
3158 ++hw->ports;
3159 }
3160
3161 if (sky2_read8(hw, B2_E_0))
3162 hw->flags |= SKY2_HW_RAM_BUFFER;
3163
3164 return 0;
3165 }
3166
3167 static void sky2_reset(struct sky2_hw *hw)
3168 {
3169 struct pci_dev *pdev = hw->pdev;
3170 u16 status;
3171 int i;
3172 u32 hwe_mask = Y2_HWE_ALL_MASK;
3173
3174 /* disable ASF */
3175 if (hw->chip_id == CHIP_ID_YUKON_EX
3176 || hw->chip_id == CHIP_ID_YUKON_SUPR) {
3177 sky2_write32(hw, CPU_WDOG, 0);
3178 status = sky2_read16(hw, HCU_CCSR);
3179 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
3180 HCU_CCSR_UC_STATE_MSK);
3181 /*
3182 * CPU clock divider shouldn't be used because
3183 * - ASF firmware may malfunction
3184 * - Yukon-Supreme: Parallel FLASH doesn't support divided clocks
3185 */
3186 status &= ~HCU_CCSR_CPU_CLK_DIVIDE_MSK;
3187 sky2_write16(hw, HCU_CCSR, status);
3188 sky2_write32(hw, CPU_WDOG, 0);
3189 } else
3190 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
3191 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
3192
3193 /* do a SW reset */
3194 sky2_write8(hw, B0_CTST, CS_RST_SET);
3195 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3196
3197 /* allow writes to PCI config */
3198 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3199
3200 /* clear PCI errors, if any */
3201 status = sky2_pci_read16(hw, PCI_STATUS);
3202 status |= PCI_STATUS_ERROR_BITS;
3203 sky2_pci_write16(hw, PCI_STATUS, status);
3204
3205 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
3206
3207 if (pci_is_pcie(pdev)) {
3208 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
3209 0xfffffffful);
3210
3211 /* If error bit is stuck on ignore it */
3212 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
3213 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
3214 else
3215 hwe_mask |= Y2_IS_PCI_EXP;
3216 }
3217
3218 sky2_power_on(hw);
3219 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3220
3221 for (i = 0; i < hw->ports; i++) {
3222 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
3223 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
3224
3225 if (hw->chip_id == CHIP_ID_YUKON_EX ||
3226 hw->chip_id == CHIP_ID_YUKON_SUPR)
3227 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
3228 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
3229 | GMC_BYP_RETR_ON);
3230
3231 }
3232
3233 if (hw->chip_id == CHIP_ID_YUKON_SUPR && hw->chip_rev > CHIP_REV_YU_SU_B0) {
3234 /* enable MACSec clock gating */
3235 sky2_pci_write32(hw, PCI_DEV_REG3, P_CLK_MACSEC_DIS);
3236 }
3237
3238 if (hw->chip_id == CHIP_ID_YUKON_OPT ||
3239 hw->chip_id == CHIP_ID_YUKON_PRM ||
3240 hw->chip_id == CHIP_ID_YUKON_OP_2) {
3241 u16 reg;
3242 u32 msk;
3243
3244 if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
3245 /* disable PCI-E PHY power down (set PHY reg 0x80, bit 7 */
3246 sky2_write32(hw, Y2_PEX_PHY_DATA, (0x80UL << 16) | (1 << 7));
3247
3248 /* set PHY Link Detect Timer to 1.1 second (11x 100ms) */
3249 reg = 10;
3250
3251 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3252 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3253 } else {
3254 /* set PHY Link Detect Timer to 0.4 second (4x 100ms) */
3255 reg = 3;
3256 }
3257
3258 reg <<= PSM_CONFIG_REG4_TIMER_PHY_LINK_DETECT_BASE;
3259 reg |= PSM_CONFIG_REG4_RST_PHY_LINK_DETECT;
3260
3261 /* reset PHY Link Detect */
3262 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3263 sky2_pci_write16(hw, PSM_CONFIG_REG4, reg);
3264
3265 /* enable PHY Quick Link */
3266 msk = sky2_read32(hw, B0_IMSK);
3267 msk |= Y2_IS_PHY_QLNK;
3268 sky2_write32(hw, B0_IMSK, msk);
3269
3270 /* check if PSMv2 was running before */
3271 reg = sky2_pci_read16(hw, PSM_CONFIG_REG3);
3272 if (reg & PCI_EXP_LNKCTL_ASPMC)
3273 /* restore the PCIe Link Control register */
3274 sky2_pci_write16(hw, pdev->pcie_cap + PCI_EXP_LNKCTL,
3275 reg);
3276
3277 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3278
3279 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3280 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3281 }
3282
3283 /* Clear I2C IRQ noise */
3284 sky2_write32(hw, B2_I2C_IRQ, 1);
3285
3286 /* turn off hardware timer (unused) */
3287 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
3288 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
3289
3290 /* Turn off descriptor polling */
3291 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
3292
3293 /* Turn off receive timestamp */
3294 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
3295 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
3296
3297 /* enable the Tx Arbiters */
3298 for (i = 0; i < hw->ports; i++)
3299 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3300
3301 /* Initialize ram interface */
3302 for (i = 0; i < hw->ports; i++) {
3303 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
3304
3305 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
3306 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
3307 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
3308 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
3309 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
3310 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
3311 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
3312 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
3313 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
3314 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
3315 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
3316 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
3317 }
3318
3319 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
3320
3321 for (i = 0; i < hw->ports; i++)
3322 sky2_gmac_reset(hw, i);
3323
3324 memset(hw->st_le, 0, hw->st_size * sizeof(struct sky2_status_le));
3325 hw->st_idx = 0;
3326
3327 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
3328 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
3329
3330 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
3331 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
3332
3333 /* Set the list last index */
3334 sky2_write16(hw, STAT_LAST_IDX, hw->st_size - 1);
3335
3336 sky2_write16(hw, STAT_TX_IDX_TH, 10);
3337 sky2_write8(hw, STAT_FIFO_WM, 16);
3338
3339 /* set Status-FIFO ISR watermark */
3340 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
3341 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
3342 else
3343 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
3344
3345 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
3346 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
3347 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
3348
3349 /* enable status unit */
3350 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
3351
3352 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3353 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3354 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3355 }
3356
3357 /* Take device down (offline).
3358 * Equivalent to doing dev_stop() but this does not
3359 * inform upper layers of the transition.
3360 */
3361 static void sky2_detach(struct net_device *dev)
3362 {
3363 if (netif_running(dev)) {
3364 netif_tx_lock(dev);
3365 netif_device_detach(dev); /* stop txq */
3366 netif_tx_unlock(dev);
3367 sky2_down(dev);
3368 }
3369 }
3370
3371 /* Bring device back after doing sky2_detach */
3372 static int sky2_reattach(struct net_device *dev)
3373 {
3374 int err = 0;
3375
3376 if (netif_running(dev)) {
3377 err = sky2_up(dev);
3378 if (err) {
3379 netdev_info(dev, "could not restart %d\n", err);
3380 dev_close(dev);
3381 } else {
3382 netif_device_attach(dev);
3383 sky2_set_multicast(dev);
3384 }
3385 }
3386
3387 return err;
3388 }
3389
3390 static void sky2_all_down(struct sky2_hw *hw)
3391 {
3392 int i;
3393
3394 sky2_read32(hw, B0_IMSK);
3395 sky2_write32(hw, B0_IMSK, 0);
3396 synchronize_irq(hw->pdev->irq);
3397 napi_disable(&hw->napi);
3398
3399 for (i = 0; i < hw->ports; i++) {
3400 struct net_device *dev = hw->dev[i];
3401 struct sky2_port *sky2 = netdev_priv(dev);
3402
3403 if (!netif_running(dev))
3404 continue;
3405
3406 netif_carrier_off(dev);
3407 netif_tx_disable(dev);
3408 sky2_hw_down(sky2);
3409 }
3410 }
3411
3412 static void sky2_all_up(struct sky2_hw *hw)
3413 {
3414 u32 imask = Y2_IS_BASE;
3415 int i;
3416
3417 for (i = 0; i < hw->ports; i++) {
3418 struct net_device *dev = hw->dev[i];
3419 struct sky2_port *sky2 = netdev_priv(dev);
3420
3421 if (!netif_running(dev))
3422 continue;
3423
3424 sky2_hw_up(sky2);
3425 sky2_set_multicast(dev);
3426 imask |= portirq_msk[i];
3427 netif_wake_queue(dev);
3428 }
3429
3430 sky2_write32(hw, B0_IMSK, imask);
3431 sky2_read32(hw, B0_IMSK);
3432
3433 sky2_read32(hw, B0_Y2_SP_LISR);
3434 napi_enable(&hw->napi);
3435 }
3436
3437 static void sky2_restart(struct work_struct *work)
3438 {
3439 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
3440
3441 rtnl_lock();
3442
3443 sky2_all_down(hw);
3444 sky2_reset(hw);
3445 sky2_all_up(hw);
3446
3447 rtnl_unlock();
3448 }
3449
3450 static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
3451 {
3452 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
3453 }
3454
3455 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3456 {
3457 const struct sky2_port *sky2 = netdev_priv(dev);
3458
3459 wol->supported = sky2_wol_supported(sky2->hw);
3460 wol->wolopts = sky2->wol;
3461 }
3462
3463 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3464 {
3465 struct sky2_port *sky2 = netdev_priv(dev);
3466 struct sky2_hw *hw = sky2->hw;
3467 bool enable_wakeup = false;
3468 int i;
3469
3470 if ((wol->wolopts & ~sky2_wol_supported(sky2->hw)) ||
3471 !device_can_wakeup(&hw->pdev->dev))
3472 return -EOPNOTSUPP;
3473
3474 sky2->wol = wol->wolopts;
3475
3476 for (i = 0; i < hw->ports; i++) {
3477 struct net_device *dev = hw->dev[i];
3478 struct sky2_port *sky2 = netdev_priv(dev);
3479
3480 if (sky2->wol)
3481 enable_wakeup = true;
3482 }
3483 device_set_wakeup_enable(&hw->pdev->dev, enable_wakeup);
3484
3485 return 0;
3486 }
3487
3488 static u32 sky2_supported_modes(const struct sky2_hw *hw)
3489 {
3490 if (sky2_is_copper(hw)) {
3491 u32 modes = SUPPORTED_10baseT_Half
3492 | SUPPORTED_10baseT_Full
3493 | SUPPORTED_100baseT_Half
3494 | SUPPORTED_100baseT_Full;
3495
3496 if (hw->flags & SKY2_HW_GIGABIT)
3497 modes |= SUPPORTED_1000baseT_Half
3498 | SUPPORTED_1000baseT_Full;
3499 return modes;
3500 } else
3501 return SUPPORTED_1000baseT_Half
3502 | SUPPORTED_1000baseT_Full;
3503 }
3504
3505 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3506 {
3507 struct sky2_port *sky2 = netdev_priv(dev);
3508 struct sky2_hw *hw = sky2->hw;
3509
3510 ecmd->transceiver = XCVR_INTERNAL;
3511 ecmd->supported = sky2_supported_modes(hw);
3512 ecmd->phy_address = PHY_ADDR_MARV;
3513 if (sky2_is_copper(hw)) {
3514 ecmd->port = PORT_TP;
3515 ethtool_cmd_speed_set(ecmd, sky2->speed);
3516 ecmd->supported |= SUPPORTED_Autoneg | SUPPORTED_TP;
3517 } else {
3518 ethtool_cmd_speed_set(ecmd, SPEED_1000);
3519 ecmd->port = PORT_FIBRE;
3520 ecmd->supported |= SUPPORTED_Autoneg | SUPPORTED_FIBRE;
3521 }
3522
3523 ecmd->advertising = sky2->advertising;
3524 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_SPEED)
3525 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3526 ecmd->duplex = sky2->duplex;
3527 return 0;
3528 }
3529
3530 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3531 {
3532 struct sky2_port *sky2 = netdev_priv(dev);
3533 const struct sky2_hw *hw = sky2->hw;
3534 u32 supported = sky2_supported_modes(hw);
3535
3536 if (ecmd->autoneg == AUTONEG_ENABLE) {
3537 if (ecmd->advertising & ~supported)
3538 return -EINVAL;
3539
3540 if (sky2_is_copper(hw))
3541 sky2->advertising = ecmd->advertising |
3542 ADVERTISED_TP |
3543 ADVERTISED_Autoneg;
3544 else
3545 sky2->advertising = ecmd->advertising |
3546 ADVERTISED_FIBRE |
3547 ADVERTISED_Autoneg;
3548
3549 sky2->flags |= SKY2_FLAG_AUTO_SPEED;
3550 sky2->duplex = -1;
3551 sky2->speed = -1;
3552 } else {
3553 u32 setting;
3554 u32 speed = ethtool_cmd_speed(ecmd);
3555
3556 switch (speed) {
3557 case SPEED_1000:
3558 if (ecmd->duplex == DUPLEX_FULL)
3559 setting = SUPPORTED_1000baseT_Full;
3560 else if (ecmd->duplex == DUPLEX_HALF)
3561 setting = SUPPORTED_1000baseT_Half;
3562 else
3563 return -EINVAL;
3564 break;
3565 case SPEED_100:
3566 if (ecmd->duplex == DUPLEX_FULL)
3567 setting = SUPPORTED_100baseT_Full;
3568 else if (ecmd->duplex == DUPLEX_HALF)
3569 setting = SUPPORTED_100baseT_Half;
3570 else
3571 return -EINVAL;
3572 break;
3573
3574 case SPEED_10:
3575 if (ecmd->duplex == DUPLEX_FULL)
3576 setting = SUPPORTED_10baseT_Full;
3577 else if (ecmd->duplex == DUPLEX_HALF)
3578 setting = SUPPORTED_10baseT_Half;
3579 else
3580 return -EINVAL;
3581 break;
3582 default:
3583 return -EINVAL;
3584 }
3585
3586 if ((setting & supported) == 0)
3587 return -EINVAL;
3588
3589 sky2->speed = speed;
3590 sky2->duplex = ecmd->duplex;
3591 sky2->flags &= ~SKY2_FLAG_AUTO_SPEED;
3592 }
3593
3594 if (netif_running(dev)) {
3595 sky2_phy_reinit(sky2);
3596 sky2_set_multicast(dev);
3597 }
3598
3599 return 0;
3600 }
3601
3602 static void sky2_get_drvinfo(struct net_device *dev,
3603 struct ethtool_drvinfo *info)
3604 {
3605 struct sky2_port *sky2 = netdev_priv(dev);
3606
3607 strcpy(info->driver, DRV_NAME);
3608 strcpy(info->version, DRV_VERSION);
3609 strcpy(info->fw_version, "N/A");
3610 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
3611 }
3612
3613 static const struct sky2_stat {
3614 char name[ETH_GSTRING_LEN];
3615 u16 offset;
3616 } sky2_stats[] = {
3617 { "tx_bytes", GM_TXO_OK_HI },
3618 { "rx_bytes", GM_RXO_OK_HI },
3619 { "tx_broadcast", GM_TXF_BC_OK },
3620 { "rx_broadcast", GM_RXF_BC_OK },
3621 { "tx_multicast", GM_TXF_MC_OK },
3622 { "rx_multicast", GM_RXF_MC_OK },
3623 { "tx_unicast", GM_TXF_UC_OK },
3624 { "rx_unicast", GM_RXF_UC_OK },
3625 { "tx_mac_pause", GM_TXF_MPAUSE },
3626 { "rx_mac_pause", GM_RXF_MPAUSE },
3627 { "collisions", GM_TXF_COL },
3628 { "late_collision",GM_TXF_LAT_COL },
3629 { "aborted", GM_TXF_ABO_COL },
3630 { "single_collisions", GM_TXF_SNG_COL },
3631 { "multi_collisions", GM_TXF_MUL_COL },
3632
3633 { "rx_short", GM_RXF_SHT },
3634 { "rx_runt", GM_RXE_FRAG },
3635 { "rx_64_byte_packets", GM_RXF_64B },
3636 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3637 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3638 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3639 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3640 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3641 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3642 { "rx_too_long", GM_RXF_LNG_ERR },
3643 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3644 { "rx_jabber", GM_RXF_JAB_PKT },
3645 { "rx_fcs_error", GM_RXF_FCS_ERR },
3646
3647 { "tx_64_byte_packets", GM_TXF_64B },
3648 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3649 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3650 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3651 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3652 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3653 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3654 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3655 };
3656
3657 static u32 sky2_get_msglevel(struct net_device *netdev)
3658 {
3659 struct sky2_port *sky2 = netdev_priv(netdev);
3660 return sky2->msg_enable;
3661 }
3662
3663 static int sky2_nway_reset(struct net_device *dev)
3664 {
3665 struct sky2_port *sky2 = netdev_priv(dev);
3666
3667 if (!netif_running(dev) || !(sky2->flags & SKY2_FLAG_AUTO_SPEED))
3668 return -EINVAL;
3669
3670 sky2_phy_reinit(sky2);
3671 sky2_set_multicast(dev);
3672
3673 return 0;
3674 }
3675
3676 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3677 {
3678 struct sky2_hw *hw = sky2->hw;
3679 unsigned port = sky2->port;
3680 int i;
3681
3682 data[0] = get_stats64(hw, port, GM_TXO_OK_LO);
3683 data[1] = get_stats64(hw, port, GM_RXO_OK_LO);
3684
3685 for (i = 2; i < count; i++)
3686 data[i] = get_stats32(hw, port, sky2_stats[i].offset);
3687 }
3688
3689 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3690 {
3691 struct sky2_port *sky2 = netdev_priv(netdev);
3692 sky2->msg_enable = value;
3693 }
3694
3695 static int sky2_get_sset_count(struct net_device *dev, int sset)
3696 {
3697 switch (sset) {
3698 case ETH_SS_STATS:
3699 return ARRAY_SIZE(sky2_stats);
3700 default:
3701 return -EOPNOTSUPP;
3702 }
3703 }
3704
3705 static void sky2_get_ethtool_stats(struct net_device *dev,
3706 struct ethtool_stats *stats, u64 * data)
3707 {
3708 struct sky2_port *sky2 = netdev_priv(dev);
3709
3710 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3711 }
3712
3713 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3714 {
3715 int i;
3716
3717 switch (stringset) {
3718 case ETH_SS_STATS:
3719 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3720 memcpy(data + i * ETH_GSTRING_LEN,
3721 sky2_stats[i].name, ETH_GSTRING_LEN);
3722 break;
3723 }
3724 }
3725
3726 static int sky2_set_mac_address(struct net_device *dev, void *p)
3727 {
3728 struct sky2_port *sky2 = netdev_priv(dev);
3729 struct sky2_hw *hw = sky2->hw;
3730 unsigned port = sky2->port;
3731 const struct sockaddr *addr = p;
3732
3733 if (!is_valid_ether_addr(addr->sa_data))
3734 return -EADDRNOTAVAIL;
3735
3736 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3737 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3738 dev->dev_addr, ETH_ALEN);
3739 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3740 dev->dev_addr, ETH_ALEN);
3741
3742 /* virtual address for data */
3743 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3744
3745 /* physical address: used for pause frames */
3746 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3747
3748 return 0;
3749 }
3750
3751 static inline void sky2_add_filter(u8 filter[8], const u8 *addr)
3752 {
3753 u32 bit;
3754
3755 bit = ether_crc(ETH_ALEN, addr) & 63;
3756 filter[bit >> 3] |= 1 << (bit & 7);
3757 }
3758
3759 static void sky2_set_multicast(struct net_device *dev)
3760 {
3761 struct sky2_port *sky2 = netdev_priv(dev);
3762 struct sky2_hw *hw = sky2->hw;
3763 unsigned port = sky2->port;
3764 struct netdev_hw_addr *ha;
3765 u16 reg;
3766 u8 filter[8];
3767 int rx_pause;
3768 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3769
3770 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3771 memset(filter, 0, sizeof(filter));
3772
3773 reg = gma_read16(hw, port, GM_RX_CTRL);
3774 reg |= GM_RXCR_UCF_ENA;
3775
3776 if (dev->flags & IFF_PROMISC) /* promiscuous */
3777 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3778 else if (dev->flags & IFF_ALLMULTI)
3779 memset(filter, 0xff, sizeof(filter));
3780 else if (netdev_mc_empty(dev) && !rx_pause)
3781 reg &= ~GM_RXCR_MCF_ENA;
3782 else {
3783 reg |= GM_RXCR_MCF_ENA;
3784
3785 if (rx_pause)
3786 sky2_add_filter(filter, pause_mc_addr);
3787
3788 netdev_for_each_mc_addr(ha, dev)
3789 sky2_add_filter(filter, ha->addr);
3790 }
3791
3792 gma_write16(hw, port, GM_MC_ADDR_H1,
3793 (u16) filter[0] | ((u16) filter[1] << 8));
3794 gma_write16(hw, port, GM_MC_ADDR_H2,
3795 (u16) filter[2] | ((u16) filter[3] << 8));
3796 gma_write16(hw, port, GM_MC_ADDR_H3,
3797 (u16) filter[4] | ((u16) filter[5] << 8));
3798 gma_write16(hw, port, GM_MC_ADDR_H4,
3799 (u16) filter[6] | ((u16) filter[7] << 8));
3800
3801 gma_write16(hw, port, GM_RX_CTRL, reg);
3802 }
3803
3804 static struct rtnl_link_stats64 *sky2_get_stats(struct net_device *dev,
3805 struct rtnl_link_stats64 *stats)
3806 {
3807 struct sky2_port *sky2 = netdev_priv(dev);
3808 struct sky2_hw *hw = sky2->hw;
3809 unsigned port = sky2->port;
3810 unsigned int start;
3811 u64 _bytes, _packets;
3812
3813 do {
3814 start = u64_stats_fetch_begin_bh(&sky2->rx_stats.syncp);
3815 _bytes = sky2->rx_stats.bytes;
3816 _packets = sky2->rx_stats.packets;
3817 } while (u64_stats_fetch_retry_bh(&sky2->rx_stats.syncp, start));
3818
3819 stats->rx_packets = _packets;
3820 stats->rx_bytes = _bytes;
3821
3822 do {
3823 start = u64_stats_fetch_begin_bh(&sky2->tx_stats.syncp);
3824 _bytes = sky2->tx_stats.bytes;
3825 _packets = sky2->tx_stats.packets;
3826 } while (u64_stats_fetch_retry_bh(&sky2->tx_stats.syncp, start));
3827
3828 stats->tx_packets = _packets;
3829 stats->tx_bytes = _bytes;
3830
3831 stats->multicast = get_stats32(hw, port, GM_RXF_MC_OK)
3832 + get_stats32(hw, port, GM_RXF_BC_OK);
3833
3834 stats->collisions = get_stats32(hw, port, GM_TXF_COL);
3835
3836 stats->rx_length_errors = get_stats32(hw, port, GM_RXF_LNG_ERR);
3837 stats->rx_crc_errors = get_stats32(hw, port, GM_RXF_FCS_ERR);
3838 stats->rx_frame_errors = get_stats32(hw, port, GM_RXF_SHT)
3839 + get_stats32(hw, port, GM_RXE_FRAG);
3840 stats->rx_over_errors = get_stats32(hw, port, GM_RXE_FIFO_OV);
3841
3842 stats->rx_dropped = dev->stats.rx_dropped;
3843 stats->rx_fifo_errors = dev->stats.rx_fifo_errors;
3844 stats->tx_fifo_errors = dev->stats.tx_fifo_errors;
3845
3846 return stats;
3847 }
3848
3849 /* Can have one global because blinking is controlled by
3850 * ethtool and that is always under RTNL mutex
3851 */
3852 static void sky2_led(struct sky2_port *sky2, enum led_mode mode)
3853 {
3854 struct sky2_hw *hw = sky2->hw;
3855 unsigned port = sky2->port;
3856
3857 spin_lock_bh(&sky2->phy_lock);
3858 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3859 hw->chip_id == CHIP_ID_YUKON_EX ||
3860 hw->chip_id == CHIP_ID_YUKON_SUPR) {
3861 u16 pg;
3862 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3863 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3864
3865 switch (mode) {
3866 case MO_LED_OFF:
3867 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3868 PHY_M_LEDC_LOS_CTRL(8) |
3869 PHY_M_LEDC_INIT_CTRL(8) |
3870 PHY_M_LEDC_STA1_CTRL(8) |
3871 PHY_M_LEDC_STA0_CTRL(8));
3872 break;
3873 case MO_LED_ON:
3874 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3875 PHY_M_LEDC_LOS_CTRL(9) |
3876 PHY_M_LEDC_INIT_CTRL(9) |
3877 PHY_M_LEDC_STA1_CTRL(9) |
3878 PHY_M_LEDC_STA0_CTRL(9));
3879 break;
3880 case MO_LED_BLINK:
3881 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3882 PHY_M_LEDC_LOS_CTRL(0xa) |
3883 PHY_M_LEDC_INIT_CTRL(0xa) |
3884 PHY_M_LEDC_STA1_CTRL(0xa) |
3885 PHY_M_LEDC_STA0_CTRL(0xa));
3886 break;
3887 case MO_LED_NORM:
3888 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3889 PHY_M_LEDC_LOS_CTRL(1) |
3890 PHY_M_LEDC_INIT_CTRL(8) |
3891 PHY_M_LEDC_STA1_CTRL(7) |
3892 PHY_M_LEDC_STA0_CTRL(7));
3893 }
3894
3895 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3896 } else
3897 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3898 PHY_M_LED_MO_DUP(mode) |
3899 PHY_M_LED_MO_10(mode) |
3900 PHY_M_LED_MO_100(mode) |
3901 PHY_M_LED_MO_1000(mode) |
3902 PHY_M_LED_MO_RX(mode) |
3903 PHY_M_LED_MO_TX(mode));
3904
3905 spin_unlock_bh(&sky2->phy_lock);
3906 }
3907
3908 /* blink LED's for finding board */
3909 static int sky2_set_phys_id(struct net_device *dev,
3910 enum ethtool_phys_id_state state)
3911 {
3912 struct sky2_port *sky2 = netdev_priv(dev);
3913
3914 switch (state) {
3915 case ETHTOOL_ID_ACTIVE:
3916 return 1; /* cycle on/off once per second */
3917 case ETHTOOL_ID_INACTIVE:
3918 sky2_led(sky2, MO_LED_NORM);
3919 break;
3920 case ETHTOOL_ID_ON:
3921 sky2_led(sky2, MO_LED_ON);
3922 break;
3923 case ETHTOOL_ID_OFF:
3924 sky2_led(sky2, MO_LED_OFF);
3925 break;
3926 }
3927
3928 return 0;
3929 }
3930
3931 static void sky2_get_pauseparam(struct net_device *dev,
3932 struct ethtool_pauseparam *ecmd)
3933 {
3934 struct sky2_port *sky2 = netdev_priv(dev);
3935
3936 switch (sky2->flow_mode) {
3937 case FC_NONE:
3938 ecmd->tx_pause = ecmd->rx_pause = 0;
3939 break;
3940 case FC_TX:
3941 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
3942 break;
3943 case FC_RX:
3944 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
3945 break;
3946 case FC_BOTH:
3947 ecmd->tx_pause = ecmd->rx_pause = 1;
3948 }
3949
3950 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_PAUSE)
3951 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3952 }
3953
3954 static int sky2_set_pauseparam(struct net_device *dev,
3955 struct ethtool_pauseparam *ecmd)
3956 {
3957 struct sky2_port *sky2 = netdev_priv(dev);
3958
3959 if (ecmd->autoneg == AUTONEG_ENABLE)
3960 sky2->flags |= SKY2_FLAG_AUTO_PAUSE;
3961 else
3962 sky2->flags &= ~SKY2_FLAG_AUTO_PAUSE;
3963
3964 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
3965
3966 if (netif_running(dev))
3967 sky2_phy_reinit(sky2);
3968
3969 return 0;
3970 }
3971
3972 static int sky2_get_coalesce(struct net_device *dev,
3973 struct ethtool_coalesce *ecmd)
3974 {
3975 struct sky2_port *sky2 = netdev_priv(dev);
3976 struct sky2_hw *hw = sky2->hw;
3977
3978 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
3979 ecmd->tx_coalesce_usecs = 0;
3980 else {
3981 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
3982 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
3983 }
3984 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
3985
3986 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
3987 ecmd->rx_coalesce_usecs = 0;
3988 else {
3989 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
3990 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
3991 }
3992 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
3993
3994 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
3995 ecmd->rx_coalesce_usecs_irq = 0;
3996 else {
3997 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
3998 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
3999 }
4000
4001 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
4002
4003 return 0;
4004 }
4005
4006 /* Note: this affect both ports */
4007 static int sky2_set_coalesce(struct net_device *dev,
4008 struct ethtool_coalesce *ecmd)
4009 {
4010 struct sky2_port *sky2 = netdev_priv(dev);
4011 struct sky2_hw *hw = sky2->hw;
4012 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
4013
4014 if (ecmd->tx_coalesce_usecs > tmax ||
4015 ecmd->rx_coalesce_usecs > tmax ||
4016 ecmd->rx_coalesce_usecs_irq > tmax)
4017 return -EINVAL;
4018
4019 if (ecmd->tx_max_coalesced_frames >= sky2->tx_ring_size-1)
4020 return -EINVAL;
4021 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
4022 return -EINVAL;
4023 if (ecmd->rx_max_coalesced_frames_irq > RX_MAX_PENDING)
4024 return -EINVAL;
4025
4026 if (ecmd->tx_coalesce_usecs == 0)
4027 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
4028 else {
4029 sky2_write32(hw, STAT_TX_TIMER_INI,
4030 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
4031 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
4032 }
4033 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
4034
4035 if (ecmd->rx_coalesce_usecs == 0)
4036 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
4037 else {
4038 sky2_write32(hw, STAT_LEV_TIMER_INI,
4039 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
4040 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
4041 }
4042 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
4043
4044 if (ecmd->rx_coalesce_usecs_irq == 0)
4045 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
4046 else {
4047 sky2_write32(hw, STAT_ISR_TIMER_INI,
4048 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
4049 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
4050 }
4051 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
4052 return 0;
4053 }
4054
4055 static void sky2_get_ringparam(struct net_device *dev,
4056 struct ethtool_ringparam *ering)
4057 {
4058 struct sky2_port *sky2 = netdev_priv(dev);
4059
4060 ering->rx_max_pending = RX_MAX_PENDING;
4061 ering->rx_mini_max_pending = 0;
4062 ering->rx_jumbo_max_pending = 0;
4063 ering->tx_max_pending = TX_MAX_PENDING;
4064
4065 ering->rx_pending = sky2->rx_pending;
4066 ering->rx_mini_pending = 0;
4067 ering->rx_jumbo_pending = 0;
4068 ering->tx_pending = sky2->tx_pending;
4069 }
4070
4071 static int sky2_set_ringparam(struct net_device *dev,
4072 struct ethtool_ringparam *ering)
4073 {
4074 struct sky2_port *sky2 = netdev_priv(dev);
4075
4076 if (ering->rx_pending > RX_MAX_PENDING ||
4077 ering->rx_pending < 8 ||
4078 ering->tx_pending < TX_MIN_PENDING ||
4079 ering->tx_pending > TX_MAX_PENDING)
4080 return -EINVAL;
4081
4082 sky2_detach(dev);
4083
4084 sky2->rx_pending = ering->rx_pending;
4085 sky2->tx_pending = ering->tx_pending;
4086 sky2->tx_ring_size = roundup_pow_of_two(sky2->tx_pending+1);
4087
4088 return sky2_reattach(dev);
4089 }
4090
4091 static int sky2_get_regs_len(struct net_device *dev)
4092 {
4093 return 0x4000;
4094 }
4095
4096 static int sky2_reg_access_ok(struct sky2_hw *hw, unsigned int b)
4097 {
4098 /* This complicated switch statement is to make sure and
4099 * only access regions that are unreserved.
4100 * Some blocks are only valid on dual port cards.
4101 */
4102 switch (b) {
4103 /* second port */
4104 case 5: /* Tx Arbiter 2 */
4105 case 9: /* RX2 */
4106 case 14 ... 15: /* TX2 */
4107 case 17: case 19: /* Ram Buffer 2 */
4108 case 22 ... 23: /* Tx Ram Buffer 2 */
4109 case 25: /* Rx MAC Fifo 1 */
4110 case 27: /* Tx MAC Fifo 2 */
4111 case 31: /* GPHY 2 */
4112 case 40 ... 47: /* Pattern Ram 2 */
4113 case 52: case 54: /* TCP Segmentation 2 */
4114 case 112 ... 116: /* GMAC 2 */
4115 return hw->ports > 1;
4116
4117 case 0: /* Control */
4118 case 2: /* Mac address */
4119 case 4: /* Tx Arbiter 1 */
4120 case 7: /* PCI express reg */
4121 case 8: /* RX1 */
4122 case 12 ... 13: /* TX1 */
4123 case 16: case 18:/* Rx Ram Buffer 1 */
4124 case 20 ... 21: /* Tx Ram Buffer 1 */
4125 case 24: /* Rx MAC Fifo 1 */
4126 case 26: /* Tx MAC Fifo 1 */
4127 case 28 ... 29: /* Descriptor and status unit */
4128 case 30: /* GPHY 1*/
4129 case 32 ... 39: /* Pattern Ram 1 */
4130 case 48: case 50: /* TCP Segmentation 1 */
4131 case 56 ... 60: /* PCI space */
4132 case 80 ... 84: /* GMAC 1 */
4133 return 1;
4134
4135 default:
4136 return 0;
4137 }
4138 }
4139
4140 /*
4141 * Returns copy of control register region
4142 * Note: ethtool_get_regs always provides full size (16k) buffer
4143 */
4144 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
4145 void *p)
4146 {
4147 const struct sky2_port *sky2 = netdev_priv(dev);
4148 const void __iomem *io = sky2->hw->regs;
4149 unsigned int b;
4150
4151 regs->version = 1;
4152
4153 for (b = 0; b < 128; b++) {
4154 /* skip poisonous diagnostic ram region in block 3 */
4155 if (b == 3)
4156 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
4157 else if (sky2_reg_access_ok(sky2->hw, b))
4158 memcpy_fromio(p, io, 128);
4159 else
4160 memset(p, 0, 128);
4161
4162 p += 128;
4163 io += 128;
4164 }
4165 }
4166
4167 static int sky2_get_eeprom_len(struct net_device *dev)
4168 {
4169 struct sky2_port *sky2 = netdev_priv(dev);
4170 struct sky2_hw *hw = sky2->hw;
4171 u16 reg2;
4172
4173 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4174 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4175 }
4176
4177 static int sky2_vpd_wait(const struct sky2_hw *hw, int cap, u16 busy)
4178 {
4179 unsigned long start = jiffies;
4180
4181 while ( (sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F) == busy) {
4182 /* Can take up to 10.6 ms for write */
4183 if (time_after(jiffies, start + HZ/4)) {
4184 dev_err(&hw->pdev->dev, "VPD cycle timed out\n");
4185 return -ETIMEDOUT;
4186 }
4187 mdelay(1);
4188 }
4189
4190 return 0;
4191 }
4192
4193 static int sky2_vpd_read(struct sky2_hw *hw, int cap, void *data,
4194 u16 offset, size_t length)
4195 {
4196 int rc = 0;
4197
4198 while (length > 0) {
4199 u32 val;
4200
4201 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
4202 rc = sky2_vpd_wait(hw, cap, 0);
4203 if (rc)
4204 break;
4205
4206 val = sky2_pci_read32(hw, cap + PCI_VPD_DATA);
4207
4208 memcpy(data, &val, min(sizeof(val), length));
4209 offset += sizeof(u32);
4210 data += sizeof(u32);
4211 length -= sizeof(u32);
4212 }
4213
4214 return rc;
4215 }
4216
4217 static int sky2_vpd_write(struct sky2_hw *hw, int cap, const void *data,
4218 u16 offset, unsigned int length)
4219 {
4220 unsigned int i;
4221 int rc = 0;
4222
4223 for (i = 0; i < length; i += sizeof(u32)) {
4224 u32 val = *(u32 *)(data + i);
4225
4226 sky2_pci_write32(hw, cap + PCI_VPD_DATA, val);
4227 sky2_pci_write32(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
4228
4229 rc = sky2_vpd_wait(hw, cap, PCI_VPD_ADDR_F);
4230 if (rc)
4231 break;
4232 }
4233 return rc;
4234 }
4235
4236 static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4237 u8 *data)
4238 {
4239 struct sky2_port *sky2 = netdev_priv(dev);
4240 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4241
4242 if (!cap)
4243 return -EINVAL;
4244
4245 eeprom->magic = SKY2_EEPROM_MAGIC;
4246
4247 return sky2_vpd_read(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4248 }
4249
4250 static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4251 u8 *data)
4252 {
4253 struct sky2_port *sky2 = netdev_priv(dev);
4254 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4255
4256 if (!cap)
4257 return -EINVAL;
4258
4259 if (eeprom->magic != SKY2_EEPROM_MAGIC)
4260 return -EINVAL;
4261
4262 /* Partial writes not supported */
4263 if ((eeprom->offset & 3) || (eeprom->len & 3))
4264 return -EINVAL;
4265
4266 return sky2_vpd_write(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4267 }
4268
4269 static u32 sky2_fix_features(struct net_device *dev, u32 features)
4270 {
4271 const struct sky2_port *sky2 = netdev_priv(dev);
4272 const struct sky2_hw *hw = sky2->hw;
4273
4274 /* In order to do Jumbo packets on these chips, need to turn off the
4275 * transmit store/forward. Therefore checksum offload won't work.
4276 */
4277 if (dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U) {
4278 netdev_info(dev, "checksum offload not possible with jumbo frames\n");
4279 features &= ~(NETIF_F_TSO|NETIF_F_SG|NETIF_F_ALL_CSUM);
4280 }
4281
4282 /* Some hardware requires receive checksum for RSS to work. */
4283 if ( (features & NETIF_F_RXHASH) &&
4284 !(features & NETIF_F_RXCSUM) &&
4285 (sky2->hw->flags & SKY2_HW_RSS_CHKSUM)) {
4286 netdev_info(dev, "receive hashing forces receive checksum\n");
4287 features |= NETIF_F_RXCSUM;
4288 }
4289
4290 return features;
4291 }
4292
4293 static int sky2_set_features(struct net_device *dev, u32 features)
4294 {
4295 struct sky2_port *sky2 = netdev_priv(dev);
4296 u32 changed = dev->features ^ features;
4297
4298 if (changed & NETIF_F_RXCSUM) {
4299 u32 on = features & NETIF_F_RXCSUM;
4300 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
4301 on ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
4302 }
4303
4304 if (changed & NETIF_F_RXHASH)
4305 rx_set_rss(dev, features);
4306
4307 if (changed & (NETIF_F_HW_VLAN_TX|NETIF_F_HW_VLAN_RX))
4308 sky2_vlan_mode(dev, features);
4309
4310 return 0;
4311 }
4312
4313 static const struct ethtool_ops sky2_ethtool_ops = {
4314 .get_settings = sky2_get_settings,
4315 .set_settings = sky2_set_settings,
4316 .get_drvinfo = sky2_get_drvinfo,
4317 .get_wol = sky2_get_wol,
4318 .set_wol = sky2_set_wol,
4319 .get_msglevel = sky2_get_msglevel,
4320 .set_msglevel = sky2_set_msglevel,
4321 .nway_reset = sky2_nway_reset,
4322 .get_regs_len = sky2_get_regs_len,
4323 .get_regs = sky2_get_regs,
4324 .get_link = ethtool_op_get_link,
4325 .get_eeprom_len = sky2_get_eeprom_len,
4326 .get_eeprom = sky2_get_eeprom,
4327 .set_eeprom = sky2_set_eeprom,
4328 .get_strings = sky2_get_strings,
4329 .get_coalesce = sky2_get_coalesce,
4330 .set_coalesce = sky2_set_coalesce,
4331 .get_ringparam = sky2_get_ringparam,
4332 .set_ringparam = sky2_set_ringparam,
4333 .get_pauseparam = sky2_get_pauseparam,
4334 .set_pauseparam = sky2_set_pauseparam,
4335 .set_phys_id = sky2_set_phys_id,
4336 .get_sset_count = sky2_get_sset_count,
4337 .get_ethtool_stats = sky2_get_ethtool_stats,
4338 };
4339
4340 #ifdef CONFIG_SKY2_DEBUG
4341
4342 static struct dentry *sky2_debug;
4343
4344
4345 /*
4346 * Read and parse the first part of Vital Product Data
4347 */
4348 #define VPD_SIZE 128
4349 #define VPD_MAGIC 0x82
4350
4351 static const struct vpd_tag {
4352 char tag[2];
4353 char *label;
4354 } vpd_tags[] = {
4355 { "PN", "Part Number" },
4356 { "EC", "Engineering Level" },
4357 { "MN", "Manufacturer" },
4358 { "SN", "Serial Number" },
4359 { "YA", "Asset Tag" },
4360 { "VL", "First Error Log Message" },
4361 { "VF", "Second Error Log Message" },
4362 { "VB", "Boot Agent ROM Configuration" },
4363 { "VE", "EFI UNDI Configuration" },
4364 };
4365
4366 static void sky2_show_vpd(struct seq_file *seq, struct sky2_hw *hw)
4367 {
4368 size_t vpd_size;
4369 loff_t offs;
4370 u8 len;
4371 unsigned char *buf;
4372 u16 reg2;
4373
4374 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4375 vpd_size = 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4376
4377 seq_printf(seq, "%s Product Data\n", pci_name(hw->pdev));
4378 buf = kmalloc(vpd_size, GFP_KERNEL);
4379 if (!buf) {
4380 seq_puts(seq, "no memory!\n");
4381 return;
4382 }
4383
4384 if (pci_read_vpd(hw->pdev, 0, vpd_size, buf) < 0) {
4385 seq_puts(seq, "VPD read failed\n");
4386 goto out;
4387 }
4388
4389 if (buf[0] != VPD_MAGIC) {
4390 seq_printf(seq, "VPD tag mismatch: %#x\n", buf[0]);
4391 goto out;
4392 }
4393 len = buf[1];
4394 if (len == 0 || len > vpd_size - 4) {
4395 seq_printf(seq, "Invalid id length: %d\n", len);
4396 goto out;
4397 }
4398
4399 seq_printf(seq, "%.*s\n", len, buf + 3);
4400 offs = len + 3;
4401
4402 while (offs < vpd_size - 4) {
4403 int i;
4404
4405 if (!memcmp("RW", buf + offs, 2)) /* end marker */
4406 break;
4407 len = buf[offs + 2];
4408 if (offs + len + 3 >= vpd_size)
4409 break;
4410
4411 for (i = 0; i < ARRAY_SIZE(vpd_tags); i++) {
4412 if (!memcmp(vpd_tags[i].tag, buf + offs, 2)) {
4413 seq_printf(seq, " %s: %.*s\n",
4414 vpd_tags[i].label, len, buf + offs + 3);
4415 break;
4416 }
4417 }
4418 offs += len + 3;
4419 }
4420 out:
4421 kfree(buf);
4422 }
4423
4424 static int sky2_debug_show(struct seq_file *seq, void *v)
4425 {
4426 struct net_device *dev = seq->private;
4427 const struct sky2_port *sky2 = netdev_priv(dev);
4428 struct sky2_hw *hw = sky2->hw;
4429 unsigned port = sky2->port;
4430 unsigned idx, last;
4431 int sop;
4432
4433 sky2_show_vpd(seq, hw);
4434
4435 seq_printf(seq, "\nIRQ src=%x mask=%x control=%x\n",
4436 sky2_read32(hw, B0_ISRC),
4437 sky2_read32(hw, B0_IMSK),
4438 sky2_read32(hw, B0_Y2_SP_ICR));
4439
4440 if (!netif_running(dev)) {
4441 seq_printf(seq, "network not running\n");
4442 return 0;
4443 }
4444
4445 napi_disable(&hw->napi);
4446 last = sky2_read16(hw, STAT_PUT_IDX);
4447
4448 seq_printf(seq, "Status ring %u\n", hw->st_size);
4449 if (hw->st_idx == last)
4450 seq_puts(seq, "Status ring (empty)\n");
4451 else {
4452 seq_puts(seq, "Status ring\n");
4453 for (idx = hw->st_idx; idx != last && idx < hw->st_size;
4454 idx = RING_NEXT(idx, hw->st_size)) {
4455 const struct sky2_status_le *le = hw->st_le + idx;
4456 seq_printf(seq, "[%d] %#x %d %#x\n",
4457 idx, le->opcode, le->length, le->status);
4458 }
4459 seq_puts(seq, "\n");
4460 }
4461
4462 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
4463 sky2->tx_cons, sky2->tx_prod,
4464 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
4465 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
4466
4467 /* Dump contents of tx ring */
4468 sop = 1;
4469 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < sky2->tx_ring_size;
4470 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
4471 const struct sky2_tx_le *le = sky2->tx_le + idx;
4472 u32 a = le32_to_cpu(le->addr);
4473
4474 if (sop)
4475 seq_printf(seq, "%u:", idx);
4476 sop = 0;
4477
4478 switch (le->opcode & ~HW_OWNER) {
4479 case OP_ADDR64:
4480 seq_printf(seq, " %#x:", a);
4481 break;
4482 case OP_LRGLEN:
4483 seq_printf(seq, " mtu=%d", a);
4484 break;
4485 case OP_VLAN:
4486 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
4487 break;
4488 case OP_TCPLISW:
4489 seq_printf(seq, " csum=%#x", a);
4490 break;
4491 case OP_LARGESEND:
4492 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
4493 break;
4494 case OP_PACKET:
4495 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
4496 break;
4497 case OP_BUFFER:
4498 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
4499 break;
4500 default:
4501 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
4502 a, le16_to_cpu(le->length));
4503 }
4504
4505 if (le->ctrl & EOP) {
4506 seq_putc(seq, '\n');
4507 sop = 1;
4508 }
4509 }
4510
4511 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
4512 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
4513 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
4514 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
4515
4516 sky2_read32(hw, B0_Y2_SP_LISR);
4517 napi_enable(&hw->napi);
4518 return 0;
4519 }
4520
4521 static int sky2_debug_open(struct inode *inode, struct file *file)
4522 {
4523 return single_open(file, sky2_debug_show, inode->i_private);
4524 }
4525
4526 static const struct file_operations sky2_debug_fops = {
4527 .owner = THIS_MODULE,
4528 .open = sky2_debug_open,
4529 .read = seq_read,
4530 .llseek = seq_lseek,
4531 .release = single_release,
4532 };
4533
4534 /*
4535 * Use network device events to create/remove/rename
4536 * debugfs file entries
4537 */
4538 static int sky2_device_event(struct notifier_block *unused,
4539 unsigned long event, void *ptr)
4540 {
4541 struct net_device *dev = ptr;
4542 struct sky2_port *sky2 = netdev_priv(dev);
4543
4544 if (dev->netdev_ops->ndo_open != sky2_up || !sky2_debug)
4545 return NOTIFY_DONE;
4546
4547 switch (event) {
4548 case NETDEV_CHANGENAME:
4549 if (sky2->debugfs) {
4550 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
4551 sky2_debug, dev->name);
4552 }
4553 break;
4554
4555 case NETDEV_GOING_DOWN:
4556 if (sky2->debugfs) {
4557 netdev_printk(KERN_DEBUG, dev, "remove debugfs\n");
4558 debugfs_remove(sky2->debugfs);
4559 sky2->debugfs = NULL;
4560 }
4561 break;
4562
4563 case NETDEV_UP:
4564 sky2->debugfs = debugfs_create_file(dev->name, S_IRUGO,
4565 sky2_debug, dev,
4566 &sky2_debug_fops);
4567 if (IS_ERR(sky2->debugfs))
4568 sky2->debugfs = NULL;
4569 }
4570
4571 return NOTIFY_DONE;
4572 }
4573
4574 static struct notifier_block sky2_notifier = {
4575 .notifier_call = sky2_device_event,
4576 };
4577
4578
4579 static __init void sky2_debug_init(void)
4580 {
4581 struct dentry *ent;
4582
4583 ent = debugfs_create_dir("sky2", NULL);
4584 if (!ent || IS_ERR(ent))
4585 return;
4586
4587 sky2_debug = ent;
4588 register_netdevice_notifier(&sky2_notifier);
4589 }
4590
4591 static __exit void sky2_debug_cleanup(void)
4592 {
4593 if (sky2_debug) {
4594 unregister_netdevice_notifier(&sky2_notifier);
4595 debugfs_remove(sky2_debug);
4596 sky2_debug = NULL;
4597 }
4598 }
4599
4600 #else
4601 #define sky2_debug_init()
4602 #define sky2_debug_cleanup()
4603 #endif
4604
4605 /* Two copies of network device operations to handle special case of
4606 not allowing netpoll on second port */
4607 static const struct net_device_ops sky2_netdev_ops[2] = {
4608 {
4609 .ndo_open = sky2_up,
4610 .ndo_stop = sky2_down,
4611 .ndo_start_xmit = sky2_xmit_frame,
4612 .ndo_do_ioctl = sky2_ioctl,
4613 .ndo_validate_addr = eth_validate_addr,
4614 .ndo_set_mac_address = sky2_set_mac_address,
4615 .ndo_set_multicast_list = sky2_set_multicast,
4616 .ndo_change_mtu = sky2_change_mtu,
4617 .ndo_fix_features = sky2_fix_features,
4618 .ndo_set_features = sky2_set_features,
4619 .ndo_tx_timeout = sky2_tx_timeout,
4620 .ndo_get_stats64 = sky2_get_stats,
4621 #ifdef CONFIG_NET_POLL_CONTROLLER
4622 .ndo_poll_controller = sky2_netpoll,
4623 #endif
4624 },
4625 {
4626 .ndo_open = sky2_up,
4627 .ndo_stop = sky2_down,
4628 .ndo_start_xmit = sky2_xmit_frame,
4629 .ndo_do_ioctl = sky2_ioctl,
4630 .ndo_validate_addr = eth_validate_addr,
4631 .ndo_set_mac_address = sky2_set_mac_address,
4632 .ndo_set_multicast_list = sky2_set_multicast,
4633 .ndo_change_mtu = sky2_change_mtu,
4634 .ndo_fix_features = sky2_fix_features,
4635 .ndo_set_features = sky2_set_features,
4636 .ndo_tx_timeout = sky2_tx_timeout,
4637 .ndo_get_stats64 = sky2_get_stats,
4638 },
4639 };
4640
4641 /* Initialize network device */
4642 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
4643 unsigned port,
4644 int highmem, int wol)
4645 {
4646 struct sky2_port *sky2;
4647 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
4648
4649 if (!dev) {
4650 dev_err(&hw->pdev->dev, "etherdev alloc failed\n");
4651 return NULL;
4652 }
4653
4654 SET_NETDEV_DEV(dev, &hw->pdev->dev);
4655 dev->irq = hw->pdev->irq;
4656 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
4657 dev->watchdog_timeo = TX_WATCHDOG;
4658 dev->netdev_ops = &sky2_netdev_ops[port];
4659
4660 sky2 = netdev_priv(dev);
4661 sky2->netdev = dev;
4662 sky2->hw = hw;
4663 sky2->msg_enable = netif_msg_init(debug, default_msg);
4664
4665 /* Auto speed and flow control */
4666 sky2->flags = SKY2_FLAG_AUTO_SPEED | SKY2_FLAG_AUTO_PAUSE;
4667 if (hw->chip_id != CHIP_ID_YUKON_XL)
4668 dev->hw_features |= NETIF_F_RXCSUM;
4669
4670 sky2->flow_mode = FC_BOTH;
4671
4672 sky2->duplex = -1;
4673 sky2->speed = -1;
4674 sky2->advertising = sky2_supported_modes(hw);
4675 sky2->wol = wol;
4676
4677 spin_lock_init(&sky2->phy_lock);
4678
4679 sky2->tx_pending = TX_DEF_PENDING;
4680 sky2->tx_ring_size = roundup_pow_of_two(TX_DEF_PENDING+1);
4681 sky2->rx_pending = RX_DEF_PENDING;
4682
4683 hw->dev[port] = dev;
4684
4685 sky2->port = port;
4686
4687 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO;
4688
4689 if (highmem)
4690 dev->features |= NETIF_F_HIGHDMA;
4691
4692 /* Enable receive hashing unless hardware is known broken */
4693 if (!(hw->flags & SKY2_HW_RSS_BROKEN))
4694 dev->hw_features |= NETIF_F_RXHASH;
4695
4696 if (!(hw->flags & SKY2_HW_VLAN_BROKEN)) {
4697 dev->hw_features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
4698 dev->vlan_features |= SKY2_VLAN_OFFLOADS;
4699 }
4700
4701 dev->features |= dev->hw_features;
4702
4703 /* read the mac address */
4704 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
4705 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
4706
4707 return dev;
4708 }
4709
4710 static void __devinit sky2_show_addr(struct net_device *dev)
4711 {
4712 const struct sky2_port *sky2 = netdev_priv(dev);
4713
4714 netif_info(sky2, probe, dev, "addr %pM\n", dev->dev_addr);
4715 }
4716
4717 /* Handle software interrupt used during MSI test */
4718 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
4719 {
4720 struct sky2_hw *hw = dev_id;
4721 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4722
4723 if (status == 0)
4724 return IRQ_NONE;
4725
4726 if (status & Y2_IS_IRQ_SW) {
4727 hw->flags |= SKY2_HW_USE_MSI;
4728 wake_up(&hw->msi_wait);
4729 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4730 }
4731 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4732
4733 return IRQ_HANDLED;
4734 }
4735
4736 /* Test interrupt path by forcing a a software IRQ */
4737 static int __devinit sky2_test_msi(struct sky2_hw *hw)
4738 {
4739 struct pci_dev *pdev = hw->pdev;
4740 int err;
4741
4742 init_waitqueue_head(&hw->msi_wait);
4743
4744 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4745
4746 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4747 if (err) {
4748 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4749 return err;
4750 }
4751
4752 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4753 sky2_read8(hw, B0_CTST);
4754
4755 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4756
4757 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4758 /* MSI test failed, go back to INTx mode */
4759 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4760 "switching to INTx mode.\n");
4761
4762 err = -EOPNOTSUPP;
4763 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4764 }
4765
4766 sky2_write32(hw, B0_IMSK, 0);
4767 sky2_read32(hw, B0_IMSK);
4768
4769 free_irq(pdev->irq, hw);
4770
4771 return err;
4772 }
4773
4774 /* This driver supports yukon2 chipset only */
4775 static const char *sky2_name(u8 chipid, char *buf, int sz)
4776 {
4777 const char *name[] = {
4778 "XL", /* 0xb3 */
4779 "EC Ultra", /* 0xb4 */
4780 "Extreme", /* 0xb5 */
4781 "EC", /* 0xb6 */
4782 "FE", /* 0xb7 */
4783 "FE+", /* 0xb8 */
4784 "Supreme", /* 0xb9 */
4785 "UL 2", /* 0xba */
4786 "Unknown", /* 0xbb */
4787 "Optima", /* 0xbc */
4788 "Optima Prime", /* 0xbd */
4789 "Optima 2", /* 0xbe */
4790 };
4791
4792 if (chipid >= CHIP_ID_YUKON_XL && chipid <= CHIP_ID_YUKON_OP_2)
4793 strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
4794 else
4795 snprintf(buf, sz, "(chip %#x)", chipid);
4796 return buf;
4797 }
4798
4799 static int __devinit sky2_probe(struct pci_dev *pdev,
4800 const struct pci_device_id *ent)
4801 {
4802 struct net_device *dev;
4803 struct sky2_hw *hw;
4804 int err, using_dac = 0, wol_default;
4805 u32 reg;
4806 char buf1[16];
4807
4808 err = pci_enable_device(pdev);
4809 if (err) {
4810 dev_err(&pdev->dev, "cannot enable PCI device\n");
4811 goto err_out;
4812 }
4813
4814 /* Get configuration information
4815 * Note: only regular PCI config access once to test for HW issues
4816 * other PCI access through shared memory for speed and to
4817 * avoid MMCONFIG problems.
4818 */
4819 err = pci_read_config_dword(pdev, PCI_DEV_REG2, &reg);
4820 if (err) {
4821 dev_err(&pdev->dev, "PCI read config failed\n");
4822 goto err_out;
4823 }
4824
4825 if (~reg == 0) {
4826 dev_err(&pdev->dev, "PCI configuration read error\n");
4827 goto err_out;
4828 }
4829
4830 err = pci_request_regions(pdev, DRV_NAME);
4831 if (err) {
4832 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4833 goto err_out_disable;
4834 }
4835
4836 pci_set_master(pdev);
4837
4838 if (sizeof(dma_addr_t) > sizeof(u32) &&
4839 !(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))) {
4840 using_dac = 1;
4841 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4842 if (err < 0) {
4843 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4844 "for consistent allocations\n");
4845 goto err_out_free_regions;
4846 }
4847 } else {
4848 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4849 if (err) {
4850 dev_err(&pdev->dev, "no usable DMA configuration\n");
4851 goto err_out_free_regions;
4852 }
4853 }
4854
4855
4856 #ifdef __BIG_ENDIAN
4857 /* The sk98lin vendor driver uses hardware byte swapping but
4858 * this driver uses software swapping.
4859 */
4860 reg &= ~PCI_REV_DESC;
4861 err = pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
4862 if (err) {
4863 dev_err(&pdev->dev, "PCI write config failed\n");
4864 goto err_out_free_regions;
4865 }
4866 #endif
4867
4868 wol_default = device_may_wakeup(&pdev->dev) ? WAKE_MAGIC : 0;
4869
4870 err = -ENOMEM;
4871
4872 hw = kzalloc(sizeof(*hw) + strlen(DRV_NAME "@pci:")
4873 + strlen(pci_name(pdev)) + 1, GFP_KERNEL);
4874 if (!hw) {
4875 dev_err(&pdev->dev, "cannot allocate hardware struct\n");
4876 goto err_out_free_regions;
4877 }
4878
4879 hw->pdev = pdev;
4880 sprintf(hw->irq_name, DRV_NAME "@pci:%s", pci_name(pdev));
4881
4882 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
4883 if (!hw->regs) {
4884 dev_err(&pdev->dev, "cannot map device registers\n");
4885 goto err_out_free_hw;
4886 }
4887
4888 err = sky2_init(hw);
4889 if (err)
4890 goto err_out_iounmap;
4891
4892 /* ring for status responses */
4893 hw->st_size = hw->ports * roundup_pow_of_two(3*RX_MAX_PENDING + TX_MAX_PENDING);
4894 hw->st_le = pci_alloc_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
4895 &hw->st_dma);
4896 if (!hw->st_le)
4897 goto err_out_reset;
4898
4899 dev_info(&pdev->dev, "Yukon-2 %s chip revision %d\n",
4900 sky2_name(hw->chip_id, buf1, sizeof(buf1)), hw->chip_rev);
4901
4902 sky2_reset(hw);
4903
4904 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
4905 if (!dev) {
4906 err = -ENOMEM;
4907 goto err_out_free_pci;
4908 }
4909
4910 if (!disable_msi && pci_enable_msi(pdev) == 0) {
4911 err = sky2_test_msi(hw);
4912 if (err == -EOPNOTSUPP)
4913 pci_disable_msi(pdev);
4914 else if (err)
4915 goto err_out_free_netdev;
4916 }
4917
4918 err = register_netdev(dev);
4919 if (err) {
4920 dev_err(&pdev->dev, "cannot register net device\n");
4921 goto err_out_free_netdev;
4922 }
4923
4924 netif_carrier_off(dev);
4925
4926 netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
4927
4928 err = request_irq(pdev->irq, sky2_intr,
4929 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
4930 hw->irq_name, hw);
4931 if (err) {
4932 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4933 goto err_out_unregister;
4934 }
4935 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4936 napi_enable(&hw->napi);
4937
4938 sky2_show_addr(dev);
4939
4940 if (hw->ports > 1) {
4941 struct net_device *dev1;
4942
4943 err = -ENOMEM;
4944 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
4945 if (dev1 && (err = register_netdev(dev1)) == 0)
4946 sky2_show_addr(dev1);
4947 else {
4948 dev_warn(&pdev->dev,
4949 "register of second port failed (%d)\n", err);
4950 hw->dev[1] = NULL;
4951 hw->ports = 1;
4952 if (dev1)
4953 free_netdev(dev1);
4954 }
4955 }
4956
4957 setup_timer(&hw->watchdog_timer, sky2_watchdog, (unsigned long) hw);
4958 INIT_WORK(&hw->restart_work, sky2_restart);
4959
4960 pci_set_drvdata(pdev, hw);
4961 pdev->d3_delay = 150;
4962
4963 return 0;
4964
4965 err_out_unregister:
4966 if (hw->flags & SKY2_HW_USE_MSI)
4967 pci_disable_msi(pdev);
4968 unregister_netdev(dev);
4969 err_out_free_netdev:
4970 free_netdev(dev);
4971 err_out_free_pci:
4972 pci_free_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
4973 hw->st_le, hw->st_dma);
4974 err_out_reset:
4975 sky2_write8(hw, B0_CTST, CS_RST_SET);
4976 err_out_iounmap:
4977 iounmap(hw->regs);
4978 err_out_free_hw:
4979 kfree(hw);
4980 err_out_free_regions:
4981 pci_release_regions(pdev);
4982 err_out_disable:
4983 pci_disable_device(pdev);
4984 err_out:
4985 pci_set_drvdata(pdev, NULL);
4986 return err;
4987 }
4988
4989 static void __devexit sky2_remove(struct pci_dev *pdev)
4990 {
4991 struct sky2_hw *hw = pci_get_drvdata(pdev);
4992 int i;
4993
4994 if (!hw)
4995 return;
4996
4997 del_timer_sync(&hw->watchdog_timer);
4998 cancel_work_sync(&hw->restart_work);
4999
5000 for (i = hw->ports-1; i >= 0; --i)
5001 unregister_netdev(hw->dev[i]);
5002
5003 sky2_write32(hw, B0_IMSK, 0);
5004
5005 sky2_power_aux(hw);
5006
5007 sky2_write8(hw, B0_CTST, CS_RST_SET);
5008 sky2_read8(hw, B0_CTST);
5009
5010 free_irq(pdev->irq, hw);
5011 if (hw->flags & SKY2_HW_USE_MSI)
5012 pci_disable_msi(pdev);
5013 pci_free_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
5014 hw->st_le, hw->st_dma);
5015 pci_release_regions(pdev);
5016 pci_disable_device(pdev);
5017
5018 for (i = hw->ports-1; i >= 0; --i)
5019 free_netdev(hw->dev[i]);
5020
5021 iounmap(hw->regs);
5022 kfree(hw);
5023
5024 pci_set_drvdata(pdev, NULL);
5025 }
5026
5027 static int sky2_suspend(struct device *dev)
5028 {
5029 struct pci_dev *pdev = to_pci_dev(dev);
5030 struct sky2_hw *hw = pci_get_drvdata(pdev);
5031 int i;
5032
5033 if (!hw)
5034 return 0;
5035
5036 del_timer_sync(&hw->watchdog_timer);
5037 cancel_work_sync(&hw->restart_work);
5038
5039 rtnl_lock();
5040
5041 sky2_all_down(hw);
5042 for (i = 0; i < hw->ports; i++) {
5043 struct net_device *dev = hw->dev[i];
5044 struct sky2_port *sky2 = netdev_priv(dev);
5045
5046 if (sky2->wol)
5047 sky2_wol_init(sky2);
5048 }
5049
5050 sky2_power_aux(hw);
5051 rtnl_unlock();
5052
5053 return 0;
5054 }
5055
5056 #ifdef CONFIG_PM_SLEEP
5057 static int sky2_resume(struct device *dev)
5058 {
5059 struct pci_dev *pdev = to_pci_dev(dev);
5060 struct sky2_hw *hw = pci_get_drvdata(pdev);
5061 int err;
5062
5063 if (!hw)
5064 return 0;
5065
5066 /* Re-enable all clocks */
5067 err = pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
5068 if (err) {
5069 dev_err(&pdev->dev, "PCI write config failed\n");
5070 goto out;
5071 }
5072
5073 rtnl_lock();
5074 sky2_reset(hw);
5075 sky2_all_up(hw);
5076 rtnl_unlock();
5077
5078 return 0;
5079 out:
5080
5081 dev_err(&pdev->dev, "resume failed (%d)\n", err);
5082 pci_disable_device(pdev);
5083 return err;
5084 }
5085
5086 static SIMPLE_DEV_PM_OPS(sky2_pm_ops, sky2_suspend, sky2_resume);
5087 #define SKY2_PM_OPS (&sky2_pm_ops)
5088
5089 #else
5090
5091 #define SKY2_PM_OPS NULL
5092 #endif
5093
5094 static void sky2_shutdown(struct pci_dev *pdev)
5095 {
5096 sky2_suspend(&pdev->dev);
5097 pci_wake_from_d3(pdev, device_may_wakeup(&pdev->dev));
5098 pci_set_power_state(pdev, PCI_D3hot);
5099 }
5100
5101 static struct pci_driver sky2_driver = {
5102 .name = DRV_NAME,
5103 .id_table = sky2_id_table,
5104 .probe = sky2_probe,
5105 .remove = __devexit_p(sky2_remove),
5106 .shutdown = sky2_shutdown,
5107 .driver.pm = SKY2_PM_OPS,
5108 };
5109
5110 static int __init sky2_init_module(void)
5111 {
5112 pr_info("driver version " DRV_VERSION "\n");
5113
5114 sky2_debug_init();
5115 return pci_register_driver(&sky2_driver);
5116 }
5117
5118 static void __exit sky2_cleanup_module(void)
5119 {
5120 pci_unregister_driver(&sky2_driver);
5121 sky2_debug_cleanup();
5122 }
5123
5124 module_init(sky2_init_module);
5125 module_exit(sky2_cleanup_module);
5126
5127 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
5128 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
5129 MODULE_LICENSE("GPL");
5130 MODULE_VERSION(DRV_VERSION);
kernel-based virtual machine