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Initial commit
[wrt350n-kernel.git] / drivers / net / sky2.c
blob9a6295909e43c318d4fa4da46995d2121e362920
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 #include <linux/crc32.h>
26 #include <linux/kernel.h>
27 #include <linux/version.h>
28 #include <linux/module.h>
29 #include <linux/netdevice.h>
30 #include <linux/dma-mapping.h>
31 #include <linux/etherdevice.h>
32 #include <linux/ethtool.h>
33 #include <linux/pci.h>
34 #include <linux/ip.h>
35 #include <net/ip.h>
36 #include <linux/tcp.h>
37 #include <linux/in.h>
38 #include <linux/delay.h>
39 #include <linux/workqueue.h>
40 #include <linux/if_vlan.h>
41 #include <linux/prefetch.h>
42 #include <linux/debugfs.h>
43 #include <linux/mii.h>
44
45 #include <asm/irq.h>
46
47 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
48 #define SKY2_VLAN_TAG_USED 1
49 #endif
50
51 #include "sky2.h"
52
53 #define DRV_NAME "sky2"
54 #define DRV_VERSION "1.21"
55 #define PFX DRV_NAME " "
56
57 /*
58 * The Yukon II chipset takes 64 bit command blocks (called list elements)
59 * that are organized into three (receive, transmit, status) different rings
60 * similar to Tigon3.
61 */
62
63 #define RX_LE_SIZE 1024
64 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
65 #define RX_MAX_PENDING (RX_LE_SIZE/6 - 2)
66 #define RX_DEF_PENDING RX_MAX_PENDING
67
68 #define TX_RING_SIZE 512
69 #define TX_DEF_PENDING (TX_RING_SIZE - 1)
70 #define TX_MIN_PENDING 64
71 #define MAX_SKB_TX_LE (4 + (sizeof(dma_addr_t)/sizeof(u32))*MAX_SKB_FRAGS)
72
73 #define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
74 #define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
75 #define TX_WATCHDOG (5 * HZ)
76 #define NAPI_WEIGHT 64
77 #define PHY_RETRIES 1000
78
79 #define SKY2_EEPROM_MAGIC 0x9955aabb
80
81
82 #define RING_NEXT(x,s) (((x)+1) & ((s)-1))
83
84 static const u32 default_msg =
85 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
86 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
87 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
88
89 static int debug = -1; /* defaults above */
90 module_param(debug, int, 0);
91 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
92
93 static int copybreak __read_mostly = 128;
94 module_param(copybreak, int, 0);
95 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
96
97 static int disable_msi = 0;
98 module_param(disable_msi, int, 0);
99 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
100
101 static const struct pci_device_id sky2_id_table[] = {
102 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
103 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
104 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
105 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
106 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
107 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B03) }, /* DGE-550T */
108 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
109 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4354) }, /* 88E8040 */
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4356) }, /* 88EC033 */
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4357) }, /* 88E8042 */
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x435A) }, /* 88E8048 */
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) }, /* 88E8052 */
125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) }, /* 88E8050 */
126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) }, /* 88E8053 */
127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) }, /* 88E8055 */
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) }, /* 88E8056 */
129 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4365) }, /* 88E8070 */
130 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) }, /* 88EC036 */
131 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) }, /* 88EC032 */
132 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) }, /* 88EC034 */
133 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4369) }, /* 88EC042 */
134 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436A) }, /* 88E8058 */
135 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436B) }, /* 88E8071 */
136 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436C) }, /* 88E8072 */
137 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436D) }, /* 88E8055 */
138 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4370) }, /* 88E8075 */
139 { 0 }
140 };
141
142 MODULE_DEVICE_TABLE(pci, sky2_id_table);
143
144 /* Avoid conditionals by using array */
145 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
146 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
147 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
148
149 /* This driver supports yukon2 chipset only */
150 static const char *yukon2_name[] = {
151 "XL", /* 0xb3 */
152 "EC Ultra", /* 0xb4 */
153 "Extreme", /* 0xb5 */
154 "EC", /* 0xb6 */
155 "FE", /* 0xb7 */
156 "FE+", /* 0xb8 */
157 };
158
159 static void sky2_set_multicast(struct net_device *dev);
160
161 /* Access to PHY via serial interconnect */
162 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
163 {
164 int i;
165
166 gma_write16(hw, port, GM_SMI_DATA, val);
167 gma_write16(hw, port, GM_SMI_CTRL,
168 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
169
170 for (i = 0; i < PHY_RETRIES; i++) {
171 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
172 if (ctrl == 0xffff)
173 goto io_error;
174
175 if (!(ctrl & GM_SMI_CT_BUSY))
176 return 0;
177
178 udelay(10);
179 }
180
181 dev_warn(&hw->pdev->dev,"%s: phy write timeout\n", hw->dev[port]->name);
182 return -ETIMEDOUT;
183
184 io_error:
185 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
186 return -EIO;
187 }
188
189 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
190 {
191 int i;
192
193 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
194 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
195
196 for (i = 0; i < PHY_RETRIES; i++) {
197 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
198 if (ctrl == 0xffff)
199 goto io_error;
200
201 if (ctrl & GM_SMI_CT_RD_VAL) {
202 *val = gma_read16(hw, port, GM_SMI_DATA);
203 return 0;
204 }
205
206 udelay(10);
207 }
208
209 dev_warn(&hw->pdev->dev, "%s: phy read timeout\n", hw->dev[port]->name);
210 return -ETIMEDOUT;
211 io_error:
212 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
213 return -EIO;
214 }
215
216 static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
217 {
218 u16 v;
219 __gm_phy_read(hw, port, reg, &v);
220 return v;
221 }
222
223
224 static void sky2_power_on(struct sky2_hw *hw)
225 {
226 /* switch power to VCC (WA for VAUX problem) */
227 sky2_write8(hw, B0_POWER_CTRL,
228 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
229
230 /* disable Core Clock Division, */
231 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
232
233 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
234 /* enable bits are inverted */
235 sky2_write8(hw, B2_Y2_CLK_GATE,
236 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
237 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
238 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
239 else
240 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
241
242 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
243 u32 reg;
244
245 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
246
247 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
248 /* set all bits to 0 except bits 15..12 and 8 */
249 reg &= P_ASPM_CONTROL_MSK;
250 sky2_pci_write32(hw, PCI_DEV_REG4, reg);
251
252 reg = sky2_pci_read32(hw, PCI_DEV_REG5);
253 /* set all bits to 0 except bits 28 & 27 */
254 reg &= P_CTL_TIM_VMAIN_AV_MSK;
255 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
256
257 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
258
259 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
260 reg = sky2_read32(hw, B2_GP_IO);
261 reg |= GLB_GPIO_STAT_RACE_DIS;
262 sky2_write32(hw, B2_GP_IO, reg);
263
264 sky2_read32(hw, B2_GP_IO);
265 }
266 }
267
268 static void sky2_power_aux(struct sky2_hw *hw)
269 {
270 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
271 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
272 else
273 /* enable bits are inverted */
274 sky2_write8(hw, B2_Y2_CLK_GATE,
275 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
276 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
277 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
278
279 /* switch power to VAUX */
280 if (sky2_read16(hw, B0_CTST) & Y2_VAUX_AVAIL)
281 sky2_write8(hw, B0_POWER_CTRL,
282 (PC_VAUX_ENA | PC_VCC_ENA |
283 PC_VAUX_ON | PC_VCC_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->autoneg == AUTONEG_ENABLE &&
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 /* disable energy detect */
369 ctrl &= ~PHY_M_PC_EN_DET_MSK;
370
371 /* enable automatic crossover */
372 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
373
374 /* downshift on PHY 88E1112 and 88E1149 is changed */
375 if (sky2->autoneg == AUTONEG_ENABLE
376 && (hw->flags & SKY2_HW_NEWER_PHY)) {
377 /* set downshift counter to 3x and enable downshift */
378 ctrl &= ~PHY_M_PC_DSC_MSK;
379 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
380 }
381 }
382 } else {
383 /* workaround for deviation #4.88 (CRC errors) */
384 /* disable Automatic Crossover */
385
386 ctrl &= ~PHY_M_PC_MDIX_MSK;
387 }
388
389 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
390
391 /* special setup for PHY 88E1112 Fiber */
392 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
393 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
394
395 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
396 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
397 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
398 ctrl &= ~PHY_M_MAC_MD_MSK;
399 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
400 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
401
402 if (hw->pmd_type == 'P') {
403 /* select page 1 to access Fiber registers */
404 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
405
406 /* for SFP-module set SIGDET polarity to low */
407 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
408 ctrl |= PHY_M_FIB_SIGD_POL;
409 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
410 }
411
412 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
413 }
414
415 ctrl = PHY_CT_RESET;
416 ct1000 = 0;
417 adv = PHY_AN_CSMA;
418 reg = 0;
419
420 if (sky2->autoneg == AUTONEG_ENABLE) {
421 if (sky2_is_copper(hw)) {
422 if (sky2->advertising & ADVERTISED_1000baseT_Full)
423 ct1000 |= PHY_M_1000C_AFD;
424 if (sky2->advertising & ADVERTISED_1000baseT_Half)
425 ct1000 |= PHY_M_1000C_AHD;
426 if (sky2->advertising & ADVERTISED_100baseT_Full)
427 adv |= PHY_M_AN_100_FD;
428 if (sky2->advertising & ADVERTISED_100baseT_Half)
429 adv |= PHY_M_AN_100_HD;
430 if (sky2->advertising & ADVERTISED_10baseT_Full)
431 adv |= PHY_M_AN_10_FD;
432 if (sky2->advertising & ADVERTISED_10baseT_Half)
433 adv |= PHY_M_AN_10_HD;
434
435 adv |= copper_fc_adv[sky2->flow_mode];
436 } else { /* special defines for FIBER (88E1040S only) */
437 if (sky2->advertising & ADVERTISED_1000baseT_Full)
438 adv |= PHY_M_AN_1000X_AFD;
439 if (sky2->advertising & ADVERTISED_1000baseT_Half)
440 adv |= PHY_M_AN_1000X_AHD;
441
442 adv |= fiber_fc_adv[sky2->flow_mode];
443 }
444
445 /* Restart Auto-negotiation */
446 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
447 } else {
448 /* forced speed/duplex settings */
449 ct1000 = PHY_M_1000C_MSE;
450
451 /* Disable auto update for duplex flow control and speed */
452 reg |= GM_GPCR_AU_ALL_DIS;
453
454 switch (sky2->speed) {
455 case SPEED_1000:
456 ctrl |= PHY_CT_SP1000;
457 reg |= GM_GPCR_SPEED_1000;
458 break;
459 case SPEED_100:
460 ctrl |= PHY_CT_SP100;
461 reg |= GM_GPCR_SPEED_100;
462 break;
463 }
464
465 if (sky2->duplex == DUPLEX_FULL) {
466 reg |= GM_GPCR_DUP_FULL;
467 ctrl |= PHY_CT_DUP_MD;
468 } else if (sky2->speed < SPEED_1000)
469 sky2->flow_mode = FC_NONE;
470
471
472 reg |= gm_fc_disable[sky2->flow_mode];
473
474 /* Forward pause packets to GMAC? */
475 if (sky2->flow_mode & FC_RX)
476 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
477 else
478 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
479 }
480
481 gma_write16(hw, port, GM_GP_CTRL, reg);
482
483 if (hw->flags & SKY2_HW_GIGABIT)
484 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
485
486 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
487 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
488
489 /* Setup Phy LED's */
490 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
491 ledover = 0;
492
493 switch (hw->chip_id) {
494 case CHIP_ID_YUKON_FE:
495 /* on 88E3082 these bits are at 11..9 (shifted left) */
496 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
497
498 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
499
500 /* delete ACT LED control bits */
501 ctrl &= ~PHY_M_FELP_LED1_MSK;
502 /* change ACT LED control to blink mode */
503 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
504 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
505 break;
506
507 case CHIP_ID_YUKON_FE_P:
508 /* Enable Link Partner Next Page */
509 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
510 ctrl |= PHY_M_PC_ENA_LIP_NP;
511
512 /* disable Energy Detect and enable scrambler */
513 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
514 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
515
516 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
517 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
518 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
519 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
520
521 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
522 break;
523
524 case CHIP_ID_YUKON_XL:
525 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
526
527 /* select page 3 to access LED control register */
528 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
529
530 /* set LED Function Control register */
531 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
532 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
533 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
534 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
535 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
536
537 /* set Polarity Control register */
538 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
539 (PHY_M_POLC_LS1_P_MIX(4) |
540 PHY_M_POLC_IS0_P_MIX(4) |
541 PHY_M_POLC_LOS_CTRL(2) |
542 PHY_M_POLC_INIT_CTRL(2) |
543 PHY_M_POLC_STA1_CTRL(2) |
544 PHY_M_POLC_STA0_CTRL(2)));
545
546 /* restore page register */
547 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
548 break;
549
550 case CHIP_ID_YUKON_EC_U:
551 case CHIP_ID_YUKON_EX:
552 case CHIP_ID_YUKON_SUPR:
553 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
554
555 /* select page 3 to access LED control register */
556 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
557
558 /* set LED Function Control register */
559 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
560 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
561 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
562 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
563 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
564
565 /* set Blink Rate in LED Timer Control Register */
566 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
567 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
568 /* restore page register */
569 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
570 break;
571
572 default:
573 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
574 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
575 /* turn off the Rx LED (LED_RX) */
576 ledover &= ~PHY_M_LED_MO_RX;
577 }
578
579 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
580 hw->chip_rev == CHIP_REV_YU_EC_U_A1) {
581 /* apply fixes in PHY AFE */
582 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
583
584 /* increase differential signal amplitude in 10BASE-T */
585 gm_phy_write(hw, port, 0x18, 0xaa99);
586 gm_phy_write(hw, port, 0x17, 0x2011);
587
588 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
589 gm_phy_write(hw, port, 0x18, 0xa204);
590 gm_phy_write(hw, port, 0x17, 0x2002);
591
592 /* set page register to 0 */
593 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
594 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
595 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
596 /* apply workaround for integrated resistors calibration */
597 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
598 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
599 } else if (hw->chip_id != CHIP_ID_YUKON_EX) {
600 /* no effect on Yukon-XL */
601 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
602
603 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
604 /* turn on 100 Mbps LED (LED_LINK100) */
605 ledover |= PHY_M_LED_MO_100;
606 }
607
608 if (ledover)
609 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
610
611 }
612
613 /* Enable phy interrupt on auto-negotiation complete (or link up) */
614 if (sky2->autoneg == AUTONEG_ENABLE)
615 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
616 else
617 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
618 }
619
620 static void sky2_phy_power(struct sky2_hw *hw, unsigned port, int onoff)
621 {
622 u32 reg1;
623 static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
624 static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
625
626 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
627 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
628 /* Turn on/off phy power saving */
629 if (onoff)
630 reg1 &= ~phy_power[port];
631 else
632 reg1 |= phy_power[port];
633
634 if (onoff && hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
635 reg1 |= coma_mode[port];
636
637 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
638 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
639 sky2_pci_read32(hw, PCI_DEV_REG1);
640
641 udelay(100);
642 }
643
644 /* Force a renegotiation */
645 static void sky2_phy_reinit(struct sky2_port *sky2)
646 {
647 spin_lock_bh(&sky2->phy_lock);
648 sky2_phy_init(sky2->hw, sky2->port);
649 spin_unlock_bh(&sky2->phy_lock);
650 }
651
652 /* Put device in state to listen for Wake On Lan */
653 static void sky2_wol_init(struct sky2_port *sky2)
654 {
655 struct sky2_hw *hw = sky2->hw;
656 unsigned port = sky2->port;
657 enum flow_control save_mode;
658 u16 ctrl;
659 u32 reg1;
660
661 /* Bring hardware out of reset */
662 sky2_write16(hw, B0_CTST, CS_RST_CLR);
663 sky2_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
664
665 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
666 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
667
668 /* Force to 10/100
669 * sky2_reset will re-enable on resume
670 */
671 save_mode = sky2->flow_mode;
672 ctrl = sky2->advertising;
673
674 sky2->advertising &= ~(ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full);
675 sky2->flow_mode = FC_NONE;
676 sky2_phy_power(hw, port, 1);
677 sky2_phy_reinit(sky2);
678
679 sky2->flow_mode = save_mode;
680 sky2->advertising = ctrl;
681
682 /* Set GMAC to no flow control and auto update for speed/duplex */
683 gma_write16(hw, port, GM_GP_CTRL,
684 GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
685 GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
686
687 /* Set WOL address */
688 memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
689 sky2->netdev->dev_addr, ETH_ALEN);
690
691 /* Turn on appropriate WOL control bits */
692 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
693 ctrl = 0;
694 if (sky2->wol & WAKE_PHY)
695 ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
696 else
697 ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
698
699 if (sky2->wol & WAKE_MAGIC)
700 ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
701 else
702 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;;
703
704 ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
705 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
706
707 /* Turn on legacy PCI-Express PME mode */
708 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
709 reg1 |= PCI_Y2_PME_LEGACY;
710 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
711
712 /* block receiver */
713 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
714
715 }
716
717 static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
718 {
719 struct net_device *dev = hw->dev[port];
720
721 if ( (hw->chip_id == CHIP_ID_YUKON_EX &&
722 hw->chip_rev != CHIP_REV_YU_EX_A0) ||
723 hw->chip_id == CHIP_ID_YUKON_FE_P ||
724 hw->chip_id == CHIP_ID_YUKON_SUPR) {
725 /* Yukon-Extreme B0 and further Extreme devices */
726 /* enable Store & Forward mode for TX */
727
728 if (dev->mtu <= ETH_DATA_LEN)
729 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
730 TX_JUMBO_DIS | TX_STFW_ENA);
731
732 else
733 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
734 TX_JUMBO_ENA| TX_STFW_ENA);
735 } else {
736 if (dev->mtu <= ETH_DATA_LEN)
737 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
738 else {
739 /* set Tx GMAC FIFO Almost Empty Threshold */
740 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
741 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
742
743 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
744
745 /* Can't do offload because of lack of store/forward */
746 dev->features &= ~(NETIF_F_TSO | NETIF_F_SG | NETIF_F_ALL_CSUM);
747 }
748 }
749 }
750
751 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
752 {
753 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
754 u16 reg;
755 u32 rx_reg;
756 int i;
757 const u8 *addr = hw->dev[port]->dev_addr;
758
759 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
760 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
761
762 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
763
764 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
765 /* WA DEV_472 -- looks like crossed wires on port 2 */
766 /* clear GMAC 1 Control reset */
767 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
768 do {
769 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
770 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
771 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
772 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
773 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
774 }
775
776 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
777
778 /* Enable Transmit FIFO Underrun */
779 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
780
781 spin_lock_bh(&sky2->phy_lock);
782 sky2_phy_init(hw, port);
783 spin_unlock_bh(&sky2->phy_lock);
784
785 /* MIB clear */
786 reg = gma_read16(hw, port, GM_PHY_ADDR);
787 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
788
789 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
790 gma_read16(hw, port, i);
791 gma_write16(hw, port, GM_PHY_ADDR, reg);
792
793 /* transmit control */
794 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
795
796 /* receive control reg: unicast + multicast + no FCS */
797 gma_write16(hw, port, GM_RX_CTRL,
798 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
799
800 /* transmit flow control */
801 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
802
803 /* transmit parameter */
804 gma_write16(hw, port, GM_TX_PARAM,
805 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
806 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
807 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
808 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
809
810 /* serial mode register */
811 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
812 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
813
814 if (hw->dev[port]->mtu > ETH_DATA_LEN)
815 reg |= GM_SMOD_JUMBO_ENA;
816
817 gma_write16(hw, port, GM_SERIAL_MODE, reg);
818
819 /* virtual address for data */
820 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
821
822 /* physical address: used for pause frames */
823 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
824
825 /* ignore counter overflows */
826 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
827 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
828 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
829
830 /* Configure Rx MAC FIFO */
831 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
832 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
833 if (hw->chip_id == CHIP_ID_YUKON_EX ||
834 hw->chip_id == CHIP_ID_YUKON_FE_P)
835 rx_reg |= GMF_RX_OVER_ON;
836
837 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
838
839 if (hw->chip_id == CHIP_ID_YUKON_XL) {
840 /* Hardware errata - clear flush mask */
841 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0);
842 } else {
843 /* Flush Rx MAC FIFO on any flow control or error */
844 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
845 }
846
847 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
848 reg = RX_GMF_FL_THR_DEF + 1;
849 /* Another magic mystery workaround from sk98lin */
850 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
851 hw->chip_rev == CHIP_REV_YU_FE2_A0)
852 reg = 0x178;
853 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
854
855 /* Configure Tx MAC FIFO */
856 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
857 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
858
859 /* On chips without ram buffer, pause is controled by MAC level */
860 if (!(hw->flags & SKY2_HW_RAM_BUFFER)) {
861 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
862 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
863
864 sky2_set_tx_stfwd(hw, port);
865 }
866
867 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
868 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
869 /* disable dynamic watermark */
870 reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA));
871 reg &= ~TX_DYN_WM_ENA;
872 sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg);
873 }
874 }
875
876 /* Assign Ram Buffer allocation to queue */
877 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
878 {
879 u32 end;
880
881 /* convert from K bytes to qwords used for hw register */
882 start *= 1024/8;
883 space *= 1024/8;
884 end = start + space - 1;
885
886 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
887 sky2_write32(hw, RB_ADDR(q, RB_START), start);
888 sky2_write32(hw, RB_ADDR(q, RB_END), end);
889 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
890 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
891
892 if (q == Q_R1 || q == Q_R2) {
893 u32 tp = space - space/4;
894
895 /* On receive queue's set the thresholds
896 * give receiver priority when > 3/4 full
897 * send pause when down to 2K
898 */
899 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
900 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
901
902 tp = space - 2048/8;
903 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
904 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
905 } else {
906 /* Enable store & forward on Tx queue's because
907 * Tx FIFO is only 1K on Yukon
908 */
909 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
910 }
911
912 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
913 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
914 }
915
916 /* Setup Bus Memory Interface */
917 static void sky2_qset(struct sky2_hw *hw, u16 q)
918 {
919 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
920 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
921 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
922 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
923 }
924
925 /* Setup prefetch unit registers. This is the interface between
926 * hardware and driver list elements
927 */
928 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
929 u64 addr, u32 last)
930 {
931 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
932 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
933 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
934 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
935 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
936 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
937
938 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
939 }
940
941 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
942 {
943 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
944
945 sky2->tx_prod = RING_NEXT(sky2->tx_prod, TX_RING_SIZE);
946 le->ctrl = 0;
947 return le;
948 }
949
950 static void tx_init(struct sky2_port *sky2)
951 {
952 struct sky2_tx_le *le;
953
954 sky2->tx_prod = sky2->tx_cons = 0;
955 sky2->tx_tcpsum = 0;
956 sky2->tx_last_mss = 0;
957
958 le = get_tx_le(sky2);
959 le->addr = 0;
960 le->opcode = OP_ADDR64 | HW_OWNER;
961 }
962
963 static inline struct tx_ring_info *tx_le_re(struct sky2_port *sky2,
964 struct sky2_tx_le *le)
965 {
966 return sky2->tx_ring + (le - sky2->tx_le);
967 }
968
969 /* Update chip's next pointer */
970 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
971 {
972 /* Make sure write' to descriptors are complete before we tell hardware */
973 wmb();
974 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
975
976 /* Synchronize I/O on since next processor may write to tail */
977 mmiowb();
978 }
979
980
981 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
982 {
983 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
984 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
985 le->ctrl = 0;
986 return le;
987 }
988
989 /* Build description to hardware for one receive segment */
990 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
991 dma_addr_t map, unsigned len)
992 {
993 struct sky2_rx_le *le;
994
995 if (sizeof(dma_addr_t) > sizeof(u32)) {
996 le = sky2_next_rx(sky2);
997 le->addr = cpu_to_le32(upper_32_bits(map));
998 le->opcode = OP_ADDR64 | HW_OWNER;
999 }
1000
1001 le = sky2_next_rx(sky2);
1002 le->addr = cpu_to_le32((u32) map);
1003 le->length = cpu_to_le16(len);
1004 le->opcode = op | HW_OWNER;
1005 }
1006
1007 /* Build description to hardware for one possibly fragmented skb */
1008 static void sky2_rx_submit(struct sky2_port *sky2,
1009 const struct rx_ring_info *re)
1010 {
1011 int i;
1012
1013 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
1014
1015 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
1016 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
1017 }
1018
1019
1020 static void sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
1021 unsigned size)
1022 {
1023 struct sk_buff *skb = re->skb;
1024 int i;
1025
1026 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
1027 pci_unmap_len_set(re, data_size, size);
1028
1029 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1030 re->frag_addr[i] = pci_map_page(pdev,
1031 skb_shinfo(skb)->frags[i].page,
1032 skb_shinfo(skb)->frags[i].page_offset,
1033 skb_shinfo(skb)->frags[i].size,
1034 PCI_DMA_FROMDEVICE);
1035 }
1036
1037 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1038 {
1039 struct sk_buff *skb = re->skb;
1040 int i;
1041
1042 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
1043 PCI_DMA_FROMDEVICE);
1044
1045 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1046 pci_unmap_page(pdev, re->frag_addr[i],
1047 skb_shinfo(skb)->frags[i].size,
1048 PCI_DMA_FROMDEVICE);
1049 }
1050
1051 /* Tell chip where to start receive checksum.
1052 * Actually has two checksums, but set both same to avoid possible byte
1053 * order problems.
1054 */
1055 static void rx_set_checksum(struct sky2_port *sky2)
1056 {
1057 struct sky2_rx_le *le = sky2_next_rx(sky2);
1058
1059 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1060 le->ctrl = 0;
1061 le->opcode = OP_TCPSTART | HW_OWNER;
1062
1063 sky2_write32(sky2->hw,
1064 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1065 sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
1066 }
1067
1068 /*
1069 * The RX Stop command will not work for Yukon-2 if the BMU does not
1070 * reach the end of packet and since we can't make sure that we have
1071 * incoming data, we must reset the BMU while it is not doing a DMA
1072 * transfer. Since it is possible that the RX path is still active,
1073 * the RX RAM buffer will be stopped first, so any possible incoming
1074 * data will not trigger a DMA. After the RAM buffer is stopped, the
1075 * BMU is polled until any DMA in progress is ended and only then it
1076 * will be reset.
1077 */
1078 static void sky2_rx_stop(struct sky2_port *sky2)
1079 {
1080 struct sky2_hw *hw = sky2->hw;
1081 unsigned rxq = rxqaddr[sky2->port];
1082 int i;
1083
1084 /* disable the RAM Buffer receive queue */
1085 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1086
1087 for (i = 0; i < 0xffff; i++)
1088 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1089 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1090 goto stopped;
1091
1092 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
1093 sky2->netdev->name);
1094 stopped:
1095 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1096
1097 /* reset the Rx prefetch unit */
1098 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1099 mmiowb();
1100 }
1101
1102 /* Clean out receive buffer area, assumes receiver hardware stopped */
1103 static void sky2_rx_clean(struct sky2_port *sky2)
1104 {
1105 unsigned i;
1106
1107 memset(sky2->rx_le, 0, RX_LE_BYTES);
1108 for (i = 0; i < sky2->rx_pending; i++) {
1109 struct rx_ring_info *re = sky2->rx_ring + i;
1110
1111 if (re->skb) {
1112 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1113 kfree_skb(re->skb);
1114 re->skb = NULL;
1115 }
1116 }
1117 }
1118
1119 /* Basic MII support */
1120 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1121 {
1122 struct mii_ioctl_data *data = if_mii(ifr);
1123 struct sky2_port *sky2 = netdev_priv(dev);
1124 struct sky2_hw *hw = sky2->hw;
1125 int err = -EOPNOTSUPP;
1126
1127 if (!netif_running(dev))
1128 return -ENODEV; /* Phy still in reset */
1129
1130 switch (cmd) {
1131 case SIOCGMIIPHY:
1132 data->phy_id = PHY_ADDR_MARV;
1133
1134 /* fallthru */
1135 case SIOCGMIIREG: {
1136 u16 val = 0;
1137
1138 spin_lock_bh(&sky2->phy_lock);
1139 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1140 spin_unlock_bh(&sky2->phy_lock);
1141
1142 data->val_out = val;
1143 break;
1144 }
1145
1146 case SIOCSMIIREG:
1147 if (!capable(CAP_NET_ADMIN))
1148 return -EPERM;
1149
1150 spin_lock_bh(&sky2->phy_lock);
1151 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1152 data->val_in);
1153 spin_unlock_bh(&sky2->phy_lock);
1154 break;
1155 }
1156 return err;
1157 }
1158
1159 #ifdef SKY2_VLAN_TAG_USED
1160 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
1161 {
1162 struct sky2_port *sky2 = netdev_priv(dev);
1163 struct sky2_hw *hw = sky2->hw;
1164 u16 port = sky2->port;
1165
1166 netif_tx_lock_bh(dev);
1167 napi_disable(&hw->napi);
1168
1169 sky2->vlgrp = grp;
1170 if (grp) {
1171 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1172 RX_VLAN_STRIP_ON);
1173 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1174 TX_VLAN_TAG_ON);
1175 } else {
1176 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1177 RX_VLAN_STRIP_OFF);
1178 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1179 TX_VLAN_TAG_OFF);
1180 }
1181
1182 sky2_read32(hw, B0_Y2_SP_LISR);
1183 napi_enable(&hw->napi);
1184 netif_tx_unlock_bh(dev);
1185 }
1186 #endif
1187
1188 /*
1189 * Allocate an skb for receiving. If the MTU is large enough
1190 * make the skb non-linear with a fragment list of pages.
1191 */
1192 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2)
1193 {
1194 struct sk_buff *skb;
1195 int i;
1196
1197 if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) {
1198 unsigned char *start;
1199 /*
1200 * Workaround for a bug in FIFO that cause hang
1201 * if the FIFO if the receive buffer is not 64 byte aligned.
1202 * The buffer returned from netdev_alloc_skb is
1203 * aligned except if slab debugging is enabled.
1204 */
1205 skb = netdev_alloc_skb(sky2->netdev, sky2->rx_data_size + 8);
1206 if (!skb)
1207 goto nomem;
1208 start = PTR_ALIGN(skb->data, 8);
1209 skb_reserve(skb, start - skb->data);
1210 } else {
1211 skb = netdev_alloc_skb(sky2->netdev,
1212 sky2->rx_data_size + NET_IP_ALIGN);
1213 if (!skb)
1214 goto nomem;
1215 skb_reserve(skb, NET_IP_ALIGN);
1216 }
1217
1218 for (i = 0; i < sky2->rx_nfrags; i++) {
1219 struct page *page = alloc_page(GFP_ATOMIC);
1220
1221 if (!page)
1222 goto free_partial;
1223 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1224 }
1225
1226 return skb;
1227 free_partial:
1228 kfree_skb(skb);
1229 nomem:
1230 return NULL;
1231 }
1232
1233 static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1234 {
1235 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1236 }
1237
1238 /*
1239 * Allocate and setup receiver buffer pool.
1240 * Normal case this ends up creating one list element for skb
1241 * in the receive ring. Worst case if using large MTU and each
1242 * allocation falls on a different 64 bit region, that results
1243 * in 6 list elements per ring entry.
1244 * One element is used for checksum enable/disable, and one
1245 * extra to avoid wrap.
1246 */
1247 static int sky2_rx_start(struct sky2_port *sky2)
1248 {
1249 struct sky2_hw *hw = sky2->hw;
1250 struct rx_ring_info *re;
1251 unsigned rxq = rxqaddr[sky2->port];
1252 unsigned i, size, thresh;
1253
1254 sky2->rx_put = sky2->rx_next = 0;
1255 sky2_qset(hw, rxq);
1256
1257 /* On PCI express lowering the watermark gives better performance */
1258 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
1259 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1260
1261 /* These chips have no ram buffer?
1262 * MAC Rx RAM Read is controlled by hardware */
1263 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1264 (hw->chip_rev == CHIP_REV_YU_EC_U_A1
1265 || hw->chip_rev == CHIP_REV_YU_EC_U_B0))
1266 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1267
1268 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1269
1270 if (!(hw->flags & SKY2_HW_NEW_LE))
1271 rx_set_checksum(sky2);
1272
1273 /* Space needed for frame data + headers rounded up */
1274 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1275
1276 /* Stopping point for hardware truncation */
1277 thresh = (size - 8) / sizeof(u32);
1278
1279 sky2->rx_nfrags = size >> PAGE_SHIFT;
1280 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1281
1282 /* Compute residue after pages */
1283 size -= sky2->rx_nfrags << PAGE_SHIFT;
1284
1285 /* Optimize to handle small packets and headers */
1286 if (size < copybreak)
1287 size = copybreak;
1288 if (size < ETH_HLEN)
1289 size = ETH_HLEN;
1290
1291 sky2->rx_data_size = size;
1292
1293 /* Fill Rx ring */
1294 for (i = 0; i < sky2->rx_pending; i++) {
1295 re = sky2->rx_ring + i;
1296
1297 re->skb = sky2_rx_alloc(sky2);
1298 if (!re->skb)
1299 goto nomem;
1300
1301 sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size);
1302 sky2_rx_submit(sky2, re);
1303 }
1304
1305 /*
1306 * The receiver hangs if it receives frames larger than the
1307 * packet buffer. As a workaround, truncate oversize frames, but
1308 * the register is limited to 9 bits, so if you do frames > 2052
1309 * you better get the MTU right!
1310 */
1311 if (thresh > 0x1ff)
1312 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1313 else {
1314 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1315 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1316 }
1317
1318 /* Tell chip about available buffers */
1319 sky2_rx_update(sky2, rxq);
1320 return 0;
1321 nomem:
1322 sky2_rx_clean(sky2);
1323 return -ENOMEM;
1324 }
1325
1326 /* Bring up network interface. */
1327 static int sky2_up(struct net_device *dev)
1328 {
1329 struct sky2_port *sky2 = netdev_priv(dev);
1330 struct sky2_hw *hw = sky2->hw;
1331 unsigned port = sky2->port;
1332 u32 imask, ramsize;
1333 int cap, err = -ENOMEM;
1334 struct net_device *otherdev = hw->dev[sky2->port^1];
1335
1336 /*
1337 * On dual port PCI-X card, there is an problem where status
1338 * can be received out of order due to split transactions
1339 */
1340 if (otherdev && netif_running(otherdev) &&
1341 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1342 u16 cmd;
1343
1344 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1345 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1346 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1347
1348 }
1349
1350 if (netif_msg_ifup(sky2))
1351 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
1352
1353 netif_carrier_off(dev);
1354
1355 /* must be power of 2 */
1356 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1357 TX_RING_SIZE *
1358 sizeof(struct sky2_tx_le),
1359 &sky2->tx_le_map);
1360 if (!sky2->tx_le)
1361 goto err_out;
1362
1363 sky2->tx_ring = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info),
1364 GFP_KERNEL);
1365 if (!sky2->tx_ring)
1366 goto err_out;
1367
1368 tx_init(sky2);
1369
1370 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1371 &sky2->rx_le_map);
1372 if (!sky2->rx_le)
1373 goto err_out;
1374 memset(sky2->rx_le, 0, RX_LE_BYTES);
1375
1376 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1377 GFP_KERNEL);
1378 if (!sky2->rx_ring)
1379 goto err_out;
1380
1381 sky2_phy_power(hw, port, 1);
1382
1383 sky2_mac_init(hw, port);
1384
1385 /* Register is number of 4K blocks on internal RAM buffer. */
1386 ramsize = sky2_read8(hw, B2_E_0) * 4;
1387 if (ramsize > 0) {
1388 u32 rxspace;
1389
1390 hw->flags |= SKY2_HW_RAM_BUFFER;
1391 pr_debug(PFX "%s: ram buffer %dK\n", dev->name, ramsize);
1392 if (ramsize < 16)
1393 rxspace = ramsize / 2;
1394 else
1395 rxspace = 8 + (2*(ramsize - 16))/3;
1396
1397 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1398 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1399
1400 /* Make sure SyncQ is disabled */
1401 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1402 RB_RST_SET);
1403 }
1404
1405 sky2_qset(hw, txqaddr[port]);
1406
1407 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1408 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1409 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1410
1411 /* Set almost empty threshold */
1412 if (hw->chip_id == CHIP_ID_YUKON_EC_U
1413 && hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1414 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1415
1416 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1417 TX_RING_SIZE - 1);
1418
1419 err = sky2_rx_start(sky2);
1420 if (err)
1421 goto err_out;
1422
1423 /* Enable interrupts from phy/mac for port */
1424 imask = sky2_read32(hw, B0_IMSK);
1425 imask |= portirq_msk[port];
1426 sky2_write32(hw, B0_IMSK, imask);
1427
1428 sky2_set_multicast(dev);
1429 return 0;
1430
1431 err_out:
1432 if (sky2->rx_le) {
1433 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1434 sky2->rx_le, sky2->rx_le_map);
1435 sky2->rx_le = NULL;
1436 }
1437 if (sky2->tx_le) {
1438 pci_free_consistent(hw->pdev,
1439 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1440 sky2->tx_le, sky2->tx_le_map);
1441 sky2->tx_le = NULL;
1442 }
1443 kfree(sky2->tx_ring);
1444 kfree(sky2->rx_ring);
1445
1446 sky2->tx_ring = NULL;
1447 sky2->rx_ring = NULL;
1448 return err;
1449 }
1450
1451 /* Modular subtraction in ring */
1452 static inline int tx_dist(unsigned tail, unsigned head)
1453 {
1454 return (head - tail) & (TX_RING_SIZE - 1);
1455 }
1456
1457 /* Number of list elements available for next tx */
1458 static inline int tx_avail(const struct sky2_port *sky2)
1459 {
1460 return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
1461 }
1462
1463 /* Estimate of number of transmit list elements required */
1464 static unsigned tx_le_req(const struct sk_buff *skb)
1465 {
1466 unsigned count;
1467
1468 count = sizeof(dma_addr_t) / sizeof(u32);
1469 count += skb_shinfo(skb)->nr_frags * count;
1470
1471 if (skb_is_gso(skb))
1472 ++count;
1473
1474 if (skb->ip_summed == CHECKSUM_PARTIAL)
1475 ++count;
1476
1477 return count;
1478 }
1479
1480 /*
1481 * Put one packet in ring for transmit.
1482 * A single packet can generate multiple list elements, and
1483 * the number of ring elements will probably be less than the number
1484 * of list elements used.
1485 */
1486 static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1487 {
1488 struct sky2_port *sky2 = netdev_priv(dev);
1489 struct sky2_hw *hw = sky2->hw;
1490 struct sky2_tx_le *le = NULL;
1491 struct tx_ring_info *re;
1492 unsigned i, len;
1493 dma_addr_t mapping;
1494 u16 mss;
1495 u8 ctrl;
1496
1497 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1498 return NETDEV_TX_BUSY;
1499
1500 if (unlikely(netif_msg_tx_queued(sky2)))
1501 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1502 dev->name, sky2->tx_prod, skb->len);
1503
1504 len = skb_headlen(skb);
1505 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1506
1507 /* Send high bits if needed */
1508 if (sizeof(dma_addr_t) > sizeof(u32)) {
1509 le = get_tx_le(sky2);
1510 le->addr = cpu_to_le32(upper_32_bits(mapping));
1511 le->opcode = OP_ADDR64 | HW_OWNER;
1512 }
1513
1514 /* Check for TCP Segmentation Offload */
1515 mss = skb_shinfo(skb)->gso_size;
1516 if (mss != 0) {
1517
1518 if (!(hw->flags & SKY2_HW_NEW_LE))
1519 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1520
1521 if (mss != sky2->tx_last_mss) {
1522 le = get_tx_le(sky2);
1523 le->addr = cpu_to_le32(mss);
1524
1525 if (hw->flags & SKY2_HW_NEW_LE)
1526 le->opcode = OP_MSS | HW_OWNER;
1527 else
1528 le->opcode = OP_LRGLEN | HW_OWNER;
1529 sky2->tx_last_mss = mss;
1530 }
1531 }
1532
1533 ctrl = 0;
1534 #ifdef SKY2_VLAN_TAG_USED
1535 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1536 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1537 if (!le) {
1538 le = get_tx_le(sky2);
1539 le->addr = 0;
1540 le->opcode = OP_VLAN|HW_OWNER;
1541 } else
1542 le->opcode |= OP_VLAN;
1543 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1544 ctrl |= INS_VLAN;
1545 }
1546 #endif
1547
1548 /* Handle TCP checksum offload */
1549 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1550 /* On Yukon EX (some versions) encoding change. */
1551 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1552 ctrl |= CALSUM; /* auto checksum */
1553 else {
1554 const unsigned offset = skb_transport_offset(skb);
1555 u32 tcpsum;
1556
1557 tcpsum = offset << 16; /* sum start */
1558 tcpsum |= offset + skb->csum_offset; /* sum write */
1559
1560 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1561 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1562 ctrl |= UDPTCP;
1563
1564 if (tcpsum != sky2->tx_tcpsum) {
1565 sky2->tx_tcpsum = tcpsum;
1566
1567 le = get_tx_le(sky2);
1568 le->addr = cpu_to_le32(tcpsum);
1569 le->length = 0; /* initial checksum value */
1570 le->ctrl = 1; /* one packet */
1571 le->opcode = OP_TCPLISW | HW_OWNER;
1572 }
1573 }
1574 }
1575
1576 le = get_tx_le(sky2);
1577 le->addr = cpu_to_le32((u32) mapping);
1578 le->length = cpu_to_le16(len);
1579 le->ctrl = ctrl;
1580 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1581
1582 re = tx_le_re(sky2, le);
1583 re->skb = skb;
1584 pci_unmap_addr_set(re, mapaddr, mapping);
1585 pci_unmap_len_set(re, maplen, len);
1586
1587 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1588 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1589
1590 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1591 frag->size, PCI_DMA_TODEVICE);
1592
1593 if (sizeof(dma_addr_t) > sizeof(u32)) {
1594 le = get_tx_le(sky2);
1595 le->addr = cpu_to_le32(upper_32_bits(mapping));
1596 le->ctrl = 0;
1597 le->opcode = OP_ADDR64 | HW_OWNER;
1598 }
1599
1600 le = get_tx_le(sky2);
1601 le->addr = cpu_to_le32((u32) mapping);
1602 le->length = cpu_to_le16(frag->size);
1603 le->ctrl = ctrl;
1604 le->opcode = OP_BUFFER | HW_OWNER;
1605
1606 re = tx_le_re(sky2, le);
1607 re->skb = skb;
1608 pci_unmap_addr_set(re, mapaddr, mapping);
1609 pci_unmap_len_set(re, maplen, frag->size);
1610 }
1611
1612 le->ctrl |= EOP;
1613
1614 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1615 netif_stop_queue(dev);
1616
1617 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1618
1619 dev->trans_start = jiffies;
1620 return NETDEV_TX_OK;
1621 }
1622
1623 /*
1624 * Free ring elements from starting at tx_cons until "done"
1625 *
1626 * NB: the hardware will tell us about partial completion of multi-part
1627 * buffers so make sure not to free skb to early.
1628 */
1629 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1630 {
1631 struct net_device *dev = sky2->netdev;
1632 struct pci_dev *pdev = sky2->hw->pdev;
1633 unsigned idx;
1634
1635 BUG_ON(done >= TX_RING_SIZE);
1636
1637 for (idx = sky2->tx_cons; idx != done;
1638 idx = RING_NEXT(idx, TX_RING_SIZE)) {
1639 struct sky2_tx_le *le = sky2->tx_le + idx;
1640 struct tx_ring_info *re = sky2->tx_ring + idx;
1641
1642 switch(le->opcode & ~HW_OWNER) {
1643 case OP_LARGESEND:
1644 case OP_PACKET:
1645 pci_unmap_single(pdev,
1646 pci_unmap_addr(re, mapaddr),
1647 pci_unmap_len(re, maplen),
1648 PCI_DMA_TODEVICE);
1649 break;
1650 case OP_BUFFER:
1651 pci_unmap_page(pdev, pci_unmap_addr(re, mapaddr),
1652 pci_unmap_len(re, maplen),
1653 PCI_DMA_TODEVICE);
1654 break;
1655 }
1656
1657 if (le->ctrl & EOP) {
1658 if (unlikely(netif_msg_tx_done(sky2)))
1659 printk(KERN_DEBUG "%s: tx done %u\n",
1660 dev->name, idx);
1661
1662 dev->stats.tx_packets++;
1663 dev->stats.tx_bytes += re->skb->len;
1664
1665 dev_kfree_skb_any(re->skb);
1666 sky2->tx_next = RING_NEXT(idx, TX_RING_SIZE);
1667 }
1668 }
1669
1670 sky2->tx_cons = idx;
1671 smp_mb();
1672
1673 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
1674 netif_wake_queue(dev);
1675 }
1676
1677 /* Cleanup all untransmitted buffers, assume transmitter not running */
1678 static void sky2_tx_clean(struct net_device *dev)
1679 {
1680 struct sky2_port *sky2 = netdev_priv(dev);
1681
1682 netif_tx_lock_bh(dev);
1683 sky2_tx_complete(sky2, sky2->tx_prod);
1684 netif_tx_unlock_bh(dev);
1685 }
1686
1687 /* Network shutdown */
1688 static int sky2_down(struct net_device *dev)
1689 {
1690 struct sky2_port *sky2 = netdev_priv(dev);
1691 struct sky2_hw *hw = sky2->hw;
1692 unsigned port = sky2->port;
1693 u16 ctrl;
1694 u32 imask;
1695
1696 /* Never really got started! */
1697 if (!sky2->tx_le)
1698 return 0;
1699
1700 if (netif_msg_ifdown(sky2))
1701 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1702
1703 /* Stop more packets from being queued */
1704 netif_stop_queue(dev);
1705
1706 /* Disable port IRQ */
1707 imask = sky2_read32(hw, B0_IMSK);
1708 imask &= ~portirq_msk[port];
1709 sky2_write32(hw, B0_IMSK, imask);
1710
1711 synchronize_irq(hw->pdev->irq);
1712
1713 sky2_gmac_reset(hw, port);
1714
1715 /* Stop transmitter */
1716 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1717 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1718
1719 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1720 RB_RST_SET | RB_DIS_OP_MD);
1721
1722 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1723 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1724 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1725
1726 /* Make sure no packets are pending */
1727 napi_synchronize(&hw->napi);
1728
1729 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1730
1731 /* Workaround shared GMAC reset */
1732 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1733 && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1734 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1735
1736 /* Disable Force Sync bit and Enable Alloc bit */
1737 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1738 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1739
1740 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1741 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1742 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1743
1744 /* Reset the PCI FIFO of the async Tx queue */
1745 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1746 BMU_RST_SET | BMU_FIFO_RST);
1747
1748 /* Reset the Tx prefetch units */
1749 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1750 PREF_UNIT_RST_SET);
1751
1752 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1753
1754 sky2_rx_stop(sky2);
1755
1756 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1757 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1758
1759 sky2_phy_power(hw, port, 0);
1760
1761 netif_carrier_off(dev);
1762
1763 /* turn off LED's */
1764 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1765
1766 sky2_tx_clean(dev);
1767 sky2_rx_clean(sky2);
1768
1769 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1770 sky2->rx_le, sky2->rx_le_map);
1771 kfree(sky2->rx_ring);
1772
1773 pci_free_consistent(hw->pdev,
1774 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1775 sky2->tx_le, sky2->tx_le_map);
1776 kfree(sky2->tx_ring);
1777
1778 sky2->tx_le = NULL;
1779 sky2->rx_le = NULL;
1780
1781 sky2->rx_ring = NULL;
1782 sky2->tx_ring = NULL;
1783
1784 return 0;
1785 }
1786
1787 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1788 {
1789 if (hw->flags & SKY2_HW_FIBRE_PHY)
1790 return SPEED_1000;
1791
1792 if (!(hw->flags & SKY2_HW_GIGABIT)) {
1793 if (aux & PHY_M_PS_SPEED_100)
1794 return SPEED_100;
1795 else
1796 return SPEED_10;
1797 }
1798
1799 switch (aux & PHY_M_PS_SPEED_MSK) {
1800 case PHY_M_PS_SPEED_1000:
1801 return SPEED_1000;
1802 case PHY_M_PS_SPEED_100:
1803 return SPEED_100;
1804 default:
1805 return SPEED_10;
1806 }
1807 }
1808
1809 static void sky2_link_up(struct sky2_port *sky2)
1810 {
1811 struct sky2_hw *hw = sky2->hw;
1812 unsigned port = sky2->port;
1813 u16 reg;
1814 static const char *fc_name[] = {
1815 [FC_NONE] = "none",
1816 [FC_TX] = "tx",
1817 [FC_RX] = "rx",
1818 [FC_BOTH] = "both",
1819 };
1820
1821 /* enable Rx/Tx */
1822 reg = gma_read16(hw, port, GM_GP_CTRL);
1823 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1824 gma_write16(hw, port, GM_GP_CTRL, reg);
1825
1826 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1827
1828 netif_carrier_on(sky2->netdev);
1829
1830 mod_timer(&hw->watchdog_timer, jiffies + 1);
1831
1832 /* Turn on link LED */
1833 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1834 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1835
1836 if (netif_msg_link(sky2))
1837 printk(KERN_INFO PFX
1838 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1839 sky2->netdev->name, sky2->speed,
1840 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1841 fc_name[sky2->flow_status]);
1842 }
1843
1844 static void sky2_link_down(struct sky2_port *sky2)
1845 {
1846 struct sky2_hw *hw = sky2->hw;
1847 unsigned port = sky2->port;
1848 u16 reg;
1849
1850 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1851
1852 reg = gma_read16(hw, port, GM_GP_CTRL);
1853 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1854 gma_write16(hw, port, GM_GP_CTRL, reg);
1855
1856 netif_carrier_off(sky2->netdev);
1857
1858 /* Turn on link LED */
1859 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1860
1861 if (netif_msg_link(sky2))
1862 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
1863
1864 sky2_phy_init(hw, port);
1865 }
1866
1867 static enum flow_control sky2_flow(int rx, int tx)
1868 {
1869 if (rx)
1870 return tx ? FC_BOTH : FC_RX;
1871 else
1872 return tx ? FC_TX : FC_NONE;
1873 }
1874
1875 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
1876 {
1877 struct sky2_hw *hw = sky2->hw;
1878 unsigned port = sky2->port;
1879 u16 advert, lpa;
1880
1881 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
1882 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
1883 if (lpa & PHY_M_AN_RF) {
1884 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
1885 return -1;
1886 }
1887
1888 if (!(aux & PHY_M_PS_SPDUP_RES)) {
1889 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
1890 sky2->netdev->name);
1891 return -1;
1892 }
1893
1894 sky2->speed = sky2_phy_speed(hw, aux);
1895 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1896
1897 /* Since the pause result bits seem to in different positions on
1898 * different chips. look at registers.
1899 */
1900 if (hw->flags & SKY2_HW_FIBRE_PHY) {
1901 /* Shift for bits in fiber PHY */
1902 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
1903 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
1904
1905 if (advert & ADVERTISE_1000XPAUSE)
1906 advert |= ADVERTISE_PAUSE_CAP;
1907 if (advert & ADVERTISE_1000XPSE_ASYM)
1908 advert |= ADVERTISE_PAUSE_ASYM;
1909 if (lpa & LPA_1000XPAUSE)
1910 lpa |= LPA_PAUSE_CAP;
1911 if (lpa & LPA_1000XPAUSE_ASYM)
1912 lpa |= LPA_PAUSE_ASYM;
1913 }
1914
1915 sky2->flow_status = FC_NONE;
1916 if (advert & ADVERTISE_PAUSE_CAP) {
1917 if (lpa & LPA_PAUSE_CAP)
1918 sky2->flow_status = FC_BOTH;
1919 else if (advert & ADVERTISE_PAUSE_ASYM)
1920 sky2->flow_status = FC_RX;
1921 } else if (advert & ADVERTISE_PAUSE_ASYM) {
1922 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
1923 sky2->flow_status = FC_TX;
1924 }
1925
1926 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000
1927 && !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
1928 sky2->flow_status = FC_NONE;
1929
1930 if (sky2->flow_status & FC_TX)
1931 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
1932 else
1933 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1934
1935 return 0;
1936 }
1937
1938 /* Interrupt from PHY */
1939 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
1940 {
1941 struct net_device *dev = hw->dev[port];
1942 struct sky2_port *sky2 = netdev_priv(dev);
1943 u16 istatus, phystat;
1944
1945 if (!netif_running(dev))
1946 return;
1947
1948 spin_lock(&sky2->phy_lock);
1949 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
1950 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
1951
1952 if (netif_msg_intr(sky2))
1953 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
1954 sky2->netdev->name, istatus, phystat);
1955
1956 if (sky2->autoneg == AUTONEG_ENABLE && (istatus & PHY_M_IS_AN_COMPL)) {
1957 if (sky2_autoneg_done(sky2, phystat) == 0)
1958 sky2_link_up(sky2);
1959 goto out;
1960 }
1961
1962 if (istatus & PHY_M_IS_LSP_CHANGE)
1963 sky2->speed = sky2_phy_speed(hw, phystat);
1964
1965 if (istatus & PHY_M_IS_DUP_CHANGE)
1966 sky2->duplex =
1967 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1968
1969 if (istatus & PHY_M_IS_LST_CHANGE) {
1970 if (phystat & PHY_M_PS_LINK_UP)
1971 sky2_link_up(sky2);
1972 else
1973 sky2_link_down(sky2);
1974 }
1975 out:
1976 spin_unlock(&sky2->phy_lock);
1977 }
1978
1979 /* Transmit timeout is only called if we are running, carrier is up
1980 * and tx queue is full (stopped).
1981 */
1982 static void sky2_tx_timeout(struct net_device *dev)
1983 {
1984 struct sky2_port *sky2 = netdev_priv(dev);
1985 struct sky2_hw *hw = sky2->hw;
1986
1987 if (netif_msg_timer(sky2))
1988 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
1989
1990 printk(KERN_DEBUG PFX "%s: transmit ring %u .. %u report=%u done=%u\n",
1991 dev->name, sky2->tx_cons, sky2->tx_prod,
1992 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
1993 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
1994
1995 /* can't restart safely under softirq */
1996 schedule_work(&hw->restart_work);
1997 }
1998
1999 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
2000 {
2001 struct sky2_port *sky2 = netdev_priv(dev);
2002 struct sky2_hw *hw = sky2->hw;
2003 unsigned port = sky2->port;
2004 int err;
2005 u16 ctl, mode;
2006 u32 imask;
2007
2008 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2009 return -EINVAL;
2010
2011 if (new_mtu > ETH_DATA_LEN &&
2012 (hw->chip_id == CHIP_ID_YUKON_FE ||
2013 hw->chip_id == CHIP_ID_YUKON_FE_P))
2014 return -EINVAL;
2015
2016 if (!netif_running(dev)) {
2017 dev->mtu = new_mtu;
2018 return 0;
2019 }
2020
2021 imask = sky2_read32(hw, B0_IMSK);
2022 sky2_write32(hw, B0_IMSK, 0);
2023
2024 dev->trans_start = jiffies; /* prevent tx timeout */
2025 netif_stop_queue(dev);
2026 napi_disable(&hw->napi);
2027
2028 synchronize_irq(hw->pdev->irq);
2029
2030 if (!(hw->flags & SKY2_HW_RAM_BUFFER))
2031 sky2_set_tx_stfwd(hw, port);
2032
2033 ctl = gma_read16(hw, port, GM_GP_CTRL);
2034 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2035 sky2_rx_stop(sky2);
2036 sky2_rx_clean(sky2);
2037
2038 dev->mtu = new_mtu;
2039
2040 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
2041 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
2042
2043 if (dev->mtu > ETH_DATA_LEN)
2044 mode |= GM_SMOD_JUMBO_ENA;
2045
2046 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2047
2048 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2049
2050 err = sky2_rx_start(sky2);
2051 sky2_write32(hw, B0_IMSK, imask);
2052
2053 sky2_read32(hw, B0_Y2_SP_LISR);
2054 napi_enable(&hw->napi);
2055
2056 if (err)
2057 dev_close(dev);
2058 else {
2059 gma_write16(hw, port, GM_GP_CTRL, ctl);
2060
2061 netif_wake_queue(dev);
2062 }
2063
2064 return err;
2065 }
2066
2067 /* For small just reuse existing skb for next receive */
2068 static struct sk_buff *receive_copy(struct sky2_port *sky2,
2069 const struct rx_ring_info *re,
2070 unsigned length)
2071 {
2072 struct sk_buff *skb;
2073
2074 skb = netdev_alloc_skb(sky2->netdev, length + 2);
2075 if (likely(skb)) {
2076 skb_reserve(skb, 2);
2077 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2078 length, PCI_DMA_FROMDEVICE);
2079 skb_copy_from_linear_data(re->skb, skb->data, length);
2080 skb->ip_summed = re->skb->ip_summed;
2081 skb->csum = re->skb->csum;
2082 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2083 length, PCI_DMA_FROMDEVICE);
2084 re->skb->ip_summed = CHECKSUM_NONE;
2085 skb_put(skb, length);
2086 }
2087 return skb;
2088 }
2089
2090 /* Adjust length of skb with fragments to match received data */
2091 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2092 unsigned int length)
2093 {
2094 int i, num_frags;
2095 unsigned int size;
2096
2097 /* put header into skb */
2098 size = min(length, hdr_space);
2099 skb->tail += size;
2100 skb->len += size;
2101 length -= size;
2102
2103 num_frags = skb_shinfo(skb)->nr_frags;
2104 for (i = 0; i < num_frags; i++) {
2105 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2106
2107 if (length == 0) {
2108 /* don't need this page */
2109 __free_page(frag->page);
2110 --skb_shinfo(skb)->nr_frags;
2111 } else {
2112 size = min(length, (unsigned) PAGE_SIZE);
2113
2114 frag->size = size;
2115 skb->data_len += size;
2116 skb->truesize += size;
2117 skb->len += size;
2118 length -= size;
2119 }
2120 }
2121 }
2122
2123 /* Normal packet - take skb from ring element and put in a new one */
2124 static struct sk_buff *receive_new(struct sky2_port *sky2,
2125 struct rx_ring_info *re,
2126 unsigned int length)
2127 {
2128 struct sk_buff *skb, *nskb;
2129 unsigned hdr_space = sky2->rx_data_size;
2130
2131 /* Don't be tricky about reusing pages (yet) */
2132 nskb = sky2_rx_alloc(sky2);
2133 if (unlikely(!nskb))
2134 return NULL;
2135
2136 skb = re->skb;
2137 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2138
2139 prefetch(skb->data);
2140 re->skb = nskb;
2141 sky2_rx_map_skb(sky2->hw->pdev, re, hdr_space);
2142
2143 if (skb_shinfo(skb)->nr_frags)
2144 skb_put_frags(skb, hdr_space, length);
2145 else
2146 skb_put(skb, length);
2147 return skb;
2148 }
2149
2150 /*
2151 * Receive one packet.
2152 * For larger packets, get new buffer.
2153 */
2154 static struct sk_buff *sky2_receive(struct net_device *dev,
2155 u16 length, u32 status)
2156 {
2157 struct sky2_port *sky2 = netdev_priv(dev);
2158 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2159 struct sk_buff *skb = NULL;
2160 u16 count = (status & GMR_FS_LEN) >> 16;
2161
2162 #ifdef SKY2_VLAN_TAG_USED
2163 /* Account for vlan tag */
2164 if (sky2->vlgrp && (status & GMR_FS_VLAN))
2165 count -= VLAN_HLEN;
2166 #endif
2167
2168 if (unlikely(netif_msg_rx_status(sky2)))
2169 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
2170 dev->name, sky2->rx_next, status, length);
2171
2172 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2173 prefetch(sky2->rx_ring + sky2->rx_next);
2174
2175 /* This chip has hardware problems that generates bogus status.
2176 * So do only marginal checking and expect higher level protocols
2177 * to handle crap frames.
2178 */
2179 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2180 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2181 length != count)
2182 goto okay;
2183
2184 if (status & GMR_FS_ANY_ERR)
2185 goto error;
2186
2187 if (!(status & GMR_FS_RX_OK))
2188 goto resubmit;
2189
2190 /* if length reported by DMA does not match PHY, packet was truncated */
2191 if (length != count)
2192 goto len_error;
2193
2194 okay:
2195 if (length < copybreak)
2196 skb = receive_copy(sky2, re, length);
2197 else
2198 skb = receive_new(sky2, re, length);
2199 resubmit:
2200 sky2_rx_submit(sky2, re);
2201
2202 return skb;
2203
2204 len_error:
2205 /* Truncation of overlength packets
2206 causes PHY length to not match MAC length */
2207 ++dev->stats.rx_length_errors;
2208 if (netif_msg_rx_err(sky2) && net_ratelimit())
2209 pr_info(PFX "%s: rx length error: status %#x length %d\n",
2210 dev->name, status, length);
2211 goto resubmit;
2212
2213 error:
2214 ++dev->stats.rx_errors;
2215 if (status & GMR_FS_RX_FF_OV) {
2216 dev->stats.rx_over_errors++;
2217 goto resubmit;
2218 }
2219
2220 if (netif_msg_rx_err(sky2) && net_ratelimit())
2221 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
2222 dev->name, status, length);
2223
2224 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
2225 dev->stats.rx_length_errors++;
2226 if (status & GMR_FS_FRAGMENT)
2227 dev->stats.rx_frame_errors++;
2228 if (status & GMR_FS_CRC_ERR)
2229 dev->stats.rx_crc_errors++;
2230
2231 goto resubmit;
2232 }
2233
2234 /* Transmit complete */
2235 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2236 {
2237 struct sky2_port *sky2 = netdev_priv(dev);
2238
2239 if (netif_running(dev)) {
2240 netif_tx_lock(dev);
2241 sky2_tx_complete(sky2, last);
2242 netif_tx_unlock(dev);
2243 }
2244 }
2245
2246 /* Process status response ring */
2247 static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
2248 {
2249 int work_done = 0;
2250 unsigned rx[2] = { 0, 0 };
2251
2252 rmb();
2253 do {
2254 struct sky2_port *sky2;
2255 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2256 unsigned port;
2257 struct net_device *dev;
2258 struct sk_buff *skb;
2259 u32 status;
2260 u16 length;
2261 u8 opcode = le->opcode;
2262
2263 if (!(opcode & HW_OWNER))
2264 break;
2265
2266 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
2267
2268 port = le->css & CSS_LINK_BIT;
2269 dev = hw->dev[port];
2270 sky2 = netdev_priv(dev);
2271 length = le16_to_cpu(le->length);
2272 status = le32_to_cpu(le->status);
2273
2274 le->opcode = 0;
2275 switch (opcode & ~HW_OWNER) {
2276 case OP_RXSTAT:
2277 ++rx[port];
2278 skb = sky2_receive(dev, length, status);
2279 if (unlikely(!skb)) {
2280 dev->stats.rx_dropped++;
2281 break;
2282 }
2283
2284 /* This chip reports checksum status differently */
2285 if (hw->flags & SKY2_HW_NEW_LE) {
2286 if (sky2->rx_csum &&
2287 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2288 (le->css & CSS_TCPUDPCSOK))
2289 skb->ip_summed = CHECKSUM_UNNECESSARY;
2290 else
2291 skb->ip_summed = CHECKSUM_NONE;
2292 }
2293
2294 skb->protocol = eth_type_trans(skb, dev);
2295 dev->stats.rx_packets++;
2296 dev->stats.rx_bytes += skb->len;
2297 dev->last_rx = jiffies;
2298
2299 #ifdef SKY2_VLAN_TAG_USED
2300 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
2301 vlan_hwaccel_receive_skb(skb,
2302 sky2->vlgrp,
2303 be16_to_cpu(sky2->rx_tag));
2304 } else
2305 #endif
2306 netif_receive_skb(skb);
2307
2308 /* Stop after net poll weight */
2309 if (++work_done >= to_do)
2310 goto exit_loop;
2311 break;
2312
2313 #ifdef SKY2_VLAN_TAG_USED
2314 case OP_RXVLAN:
2315 sky2->rx_tag = length;
2316 break;
2317
2318 case OP_RXCHKSVLAN:
2319 sky2->rx_tag = length;
2320 /* fall through */
2321 #endif
2322 case OP_RXCHKS:
2323 if (!sky2->rx_csum)
2324 break;
2325
2326 /* If this happens then driver assuming wrong format */
2327 if (unlikely(hw->flags & SKY2_HW_NEW_LE)) {
2328 if (net_ratelimit())
2329 printk(KERN_NOTICE "%s: unexpected"
2330 " checksum status\n",
2331 dev->name);
2332 break;
2333 }
2334
2335 /* Both checksum counters are programmed to start at
2336 * the same offset, so unless there is a problem they
2337 * should match. This failure is an early indication that
2338 * hardware receive checksumming won't work.
2339 */
2340 if (likely(status >> 16 == (status & 0xffff))) {
2341 skb = sky2->rx_ring[sky2->rx_next].skb;
2342 skb->ip_summed = CHECKSUM_COMPLETE;
2343 skb->csum = status & 0xffff;
2344 } else {
2345 printk(KERN_NOTICE PFX "%s: hardware receive "
2346 "checksum problem (status = %#x)\n",
2347 dev->name, status);
2348 sky2->rx_csum = 0;
2349 sky2_write32(sky2->hw,
2350 Q_ADDR(rxqaddr[port], Q_CSR),
2351 BMU_DIS_RX_CHKSUM);
2352 }
2353 break;
2354
2355 case OP_TXINDEXLE:
2356 /* TX index reports status for both ports */
2357 BUILD_BUG_ON(TX_RING_SIZE > 0x1000);
2358 sky2_tx_done(hw->dev[0], status & 0xfff);
2359 if (hw->dev[1])
2360 sky2_tx_done(hw->dev[1],
2361 ((status >> 24) & 0xff)
2362 | (u16)(length & 0xf) << 8);
2363 break;
2364
2365 default:
2366 if (net_ratelimit())
2367 printk(KERN_WARNING PFX
2368 "unknown status opcode 0x%x\n", opcode);
2369 }
2370 } while (hw->st_idx != idx);
2371
2372 /* Fully processed status ring so clear irq */
2373 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2374
2375 exit_loop:
2376 if (rx[0])
2377 sky2_rx_update(netdev_priv(hw->dev[0]), Q_R1);
2378
2379 if (rx[1])
2380 sky2_rx_update(netdev_priv(hw->dev[1]), Q_R2);
2381
2382 return work_done;
2383 }
2384
2385 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2386 {
2387 struct net_device *dev = hw->dev[port];
2388
2389 if (net_ratelimit())
2390 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
2391 dev->name, status);
2392
2393 if (status & Y2_IS_PAR_RD1) {
2394 if (net_ratelimit())
2395 printk(KERN_ERR PFX "%s: ram data read parity error\n",
2396 dev->name);
2397 /* Clear IRQ */
2398 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2399 }
2400
2401 if (status & Y2_IS_PAR_WR1) {
2402 if (net_ratelimit())
2403 printk(KERN_ERR PFX "%s: ram data write parity error\n",
2404 dev->name);
2405
2406 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2407 }
2408
2409 if (status & Y2_IS_PAR_MAC1) {
2410 if (net_ratelimit())
2411 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
2412 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2413 }
2414
2415 if (status & Y2_IS_PAR_RX1) {
2416 if (net_ratelimit())
2417 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
2418 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2419 }
2420
2421 if (status & Y2_IS_TCP_TXA1) {
2422 if (net_ratelimit())
2423 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
2424 dev->name);
2425 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2426 }
2427 }
2428
2429 static void sky2_hw_intr(struct sky2_hw *hw)
2430 {
2431 struct pci_dev *pdev = hw->pdev;
2432 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2433 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2434
2435 status &= hwmsk;
2436
2437 if (status & Y2_IS_TIST_OV)
2438 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2439
2440 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2441 u16 pci_err;
2442
2443 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2444 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2445 if (net_ratelimit())
2446 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
2447 pci_err);
2448
2449 sky2_pci_write16(hw, PCI_STATUS,
2450 pci_err | PCI_STATUS_ERROR_BITS);
2451 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2452 }
2453
2454 if (status & Y2_IS_PCI_EXP) {
2455 /* PCI-Express uncorrectable Error occurred */
2456 u32 err;
2457
2458 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2459 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2460 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2461 0xfffffffful);
2462 if (net_ratelimit())
2463 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
2464
2465 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2466 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2467 }
2468
2469 if (status & Y2_HWE_L1_MASK)
2470 sky2_hw_error(hw, 0, status);
2471 status >>= 8;
2472 if (status & Y2_HWE_L1_MASK)
2473 sky2_hw_error(hw, 1, status);
2474 }
2475
2476 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2477 {
2478 struct net_device *dev = hw->dev[port];
2479 struct sky2_port *sky2 = netdev_priv(dev);
2480 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2481
2482 if (netif_msg_intr(sky2))
2483 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2484 dev->name, status);
2485
2486 if (status & GM_IS_RX_CO_OV)
2487 gma_read16(hw, port, GM_RX_IRQ_SRC);
2488
2489 if (status & GM_IS_TX_CO_OV)
2490 gma_read16(hw, port, GM_TX_IRQ_SRC);
2491
2492 if (status & GM_IS_RX_FF_OR) {
2493 ++dev->stats.rx_fifo_errors;
2494 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2495 }
2496
2497 if (status & GM_IS_TX_FF_UR) {
2498 ++dev->stats.tx_fifo_errors;
2499 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2500 }
2501 }
2502
2503 /* This should never happen it is a bug. */
2504 static void sky2_le_error(struct sky2_hw *hw, unsigned port,
2505 u16 q, unsigned ring_size)
2506 {
2507 struct net_device *dev = hw->dev[port];
2508 struct sky2_port *sky2 = netdev_priv(dev);
2509 unsigned idx;
2510 const u64 *le = (q == Q_R1 || q == Q_R2)
2511 ? (u64 *) sky2->rx_le : (u64 *) sky2->tx_le;
2512
2513 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2514 printk(KERN_ERR PFX "%s: descriptor error q=%#x get=%u [%llx] put=%u\n",
2515 dev->name, (unsigned) q, idx, (unsigned long long) le[idx],
2516 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2517
2518 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2519 }
2520
2521 static int sky2_rx_hung(struct net_device *dev)
2522 {
2523 struct sky2_port *sky2 = netdev_priv(dev);
2524 struct sky2_hw *hw = sky2->hw;
2525 unsigned port = sky2->port;
2526 unsigned rxq = rxqaddr[port];
2527 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2528 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2529 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2530 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2531
2532 /* If idle and MAC or PCI is stuck */
2533 if (sky2->check.last == dev->last_rx &&
2534 ((mac_rp == sky2->check.mac_rp &&
2535 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2536 /* Check if the PCI RX hang */
2537 (fifo_rp == sky2->check.fifo_rp &&
2538 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2539 printk(KERN_DEBUG PFX "%s: hung mac %d:%d fifo %d (%d:%d)\n",
2540 dev->name, mac_lev, mac_rp, fifo_lev, fifo_rp,
2541 sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2542 return 1;
2543 } else {
2544 sky2->check.last = dev->last_rx;
2545 sky2->check.mac_rp = mac_rp;
2546 sky2->check.mac_lev = mac_lev;
2547 sky2->check.fifo_rp = fifo_rp;
2548 sky2->check.fifo_lev = fifo_lev;
2549 return 0;
2550 }
2551 }
2552
2553 static void sky2_watchdog(unsigned long arg)
2554 {
2555 struct sky2_hw *hw = (struct sky2_hw *) arg;
2556
2557 /* Check for lost IRQ once a second */
2558 if (sky2_read32(hw, B0_ISRC)) {
2559 napi_schedule(&hw->napi);
2560 } else {
2561 int i, active = 0;
2562
2563 for (i = 0; i < hw->ports; i++) {
2564 struct net_device *dev = hw->dev[i];
2565 if (!netif_running(dev))
2566 continue;
2567 ++active;
2568
2569 /* For chips with Rx FIFO, check if stuck */
2570 if ((hw->flags & SKY2_HW_RAM_BUFFER) &&
2571 sky2_rx_hung(dev)) {
2572 pr_info(PFX "%s: receiver hang detected\n",
2573 dev->name);
2574 schedule_work(&hw->restart_work);
2575 return;
2576 }
2577 }
2578
2579 if (active == 0)
2580 return;
2581 }
2582
2583 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
2584 }
2585
2586 /* Hardware/software error handling */
2587 static void sky2_err_intr(struct sky2_hw *hw, u32 status)
2588 {
2589 if (net_ratelimit())
2590 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
2591
2592 if (status & Y2_IS_HW_ERR)
2593 sky2_hw_intr(hw);
2594
2595 if (status & Y2_IS_IRQ_MAC1)
2596 sky2_mac_intr(hw, 0);
2597
2598 if (status & Y2_IS_IRQ_MAC2)
2599 sky2_mac_intr(hw, 1);
2600
2601 if (status & Y2_IS_CHK_RX1)
2602 sky2_le_error(hw, 0, Q_R1, RX_LE_SIZE);
2603
2604 if (status & Y2_IS_CHK_RX2)
2605 sky2_le_error(hw, 1, Q_R2, RX_LE_SIZE);
2606
2607 if (status & Y2_IS_CHK_TXA1)
2608 sky2_le_error(hw, 0, Q_XA1, TX_RING_SIZE);
2609
2610 if (status & Y2_IS_CHK_TXA2)
2611 sky2_le_error(hw, 1, Q_XA2, TX_RING_SIZE);
2612 }
2613
2614 static int sky2_poll(struct napi_struct *napi, int work_limit)
2615 {
2616 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
2617 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2618 int work_done = 0;
2619 u16 idx;
2620
2621 if (unlikely(status & Y2_IS_ERROR))
2622 sky2_err_intr(hw, status);
2623
2624 if (status & Y2_IS_IRQ_PHY1)
2625 sky2_phy_intr(hw, 0);
2626
2627 if (status & Y2_IS_IRQ_PHY2)
2628 sky2_phy_intr(hw, 1);
2629
2630 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
2631 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
2632
2633 if (work_done >= work_limit)
2634 goto done;
2635 }
2636
2637 /* Bug/Errata workaround?
2638 * Need to kick the TX irq moderation timer.
2639 */
2640 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_START) {
2641 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
2642 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2643 }
2644 napi_complete(napi);
2645 sky2_read32(hw, B0_Y2_SP_LISR);
2646 done:
2647
2648 return work_done;
2649 }
2650
2651 static irqreturn_t sky2_intr(int irq, void *dev_id)
2652 {
2653 struct sky2_hw *hw = dev_id;
2654 u32 status;
2655
2656 /* Reading this mask interrupts as side effect */
2657 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2658 if (status == 0 || status == ~0)
2659 return IRQ_NONE;
2660
2661 prefetch(&hw->st_le[hw->st_idx]);
2662
2663 napi_schedule(&hw->napi);
2664
2665 return IRQ_HANDLED;
2666 }
2667
2668 #ifdef CONFIG_NET_POLL_CONTROLLER
2669 static void sky2_netpoll(struct net_device *dev)
2670 {
2671 struct sky2_port *sky2 = netdev_priv(dev);
2672
2673 napi_schedule(&sky2->hw->napi);
2674 }
2675 #endif
2676
2677 /* Chip internal frequency for clock calculations */
2678 static u32 sky2_mhz(const struct sky2_hw *hw)
2679 {
2680 switch (hw->chip_id) {
2681 case CHIP_ID_YUKON_EC:
2682 case CHIP_ID_YUKON_EC_U:
2683 case CHIP_ID_YUKON_EX:
2684 case CHIP_ID_YUKON_SUPR:
2685 return 125;
2686
2687 case CHIP_ID_YUKON_FE:
2688 return 100;
2689
2690 case CHIP_ID_YUKON_FE_P:
2691 return 50;
2692
2693 case CHIP_ID_YUKON_XL:
2694 return 156;
2695
2696 default:
2697 BUG();
2698 }
2699 }
2700
2701 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2702 {
2703 return sky2_mhz(hw) * us;
2704 }
2705
2706 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2707 {
2708 return clk / sky2_mhz(hw);
2709 }
2710
2711
2712 static int __devinit sky2_init(struct sky2_hw *hw)
2713 {
2714 u8 t8;
2715
2716 /* Enable all clocks and check for bad PCI access */
2717 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
2718
2719 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2720
2721 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2722 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2723
2724 switch(hw->chip_id) {
2725 case CHIP_ID_YUKON_XL:
2726 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
2727 break;
2728
2729 case CHIP_ID_YUKON_EC_U:
2730 hw->flags = SKY2_HW_GIGABIT
2731 | SKY2_HW_NEWER_PHY
2732 | SKY2_HW_ADV_POWER_CTL;
2733 break;
2734
2735 case CHIP_ID_YUKON_EX:
2736 hw->flags = SKY2_HW_GIGABIT
2737 | SKY2_HW_NEWER_PHY
2738 | SKY2_HW_NEW_LE
2739 | SKY2_HW_ADV_POWER_CTL;
2740
2741 /* New transmit checksum */
2742 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
2743 hw->flags |= SKY2_HW_AUTO_TX_SUM;
2744 break;
2745
2746 case CHIP_ID_YUKON_EC:
2747 /* This rev is really old, and requires untested workarounds */
2748 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
2749 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
2750 return -EOPNOTSUPP;
2751 }
2752 hw->flags = SKY2_HW_GIGABIT;
2753 break;
2754
2755 case CHIP_ID_YUKON_FE:
2756 break;
2757
2758 case CHIP_ID_YUKON_FE_P:
2759 hw->flags = SKY2_HW_NEWER_PHY
2760 | SKY2_HW_NEW_LE
2761 | SKY2_HW_AUTO_TX_SUM
2762 | SKY2_HW_ADV_POWER_CTL;
2763 break;
2764
2765 case CHIP_ID_YUKON_SUPR:
2766 hw->flags = SKY2_HW_GIGABIT
2767 | SKY2_HW_NEWER_PHY
2768 | SKY2_HW_NEW_LE
2769 | SKY2_HW_AUTO_TX_SUM
2770 | SKY2_HW_ADV_POWER_CTL;
2771 break;
2772
2773 default:
2774 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
2775 hw->chip_id);
2776 return -EOPNOTSUPP;
2777 }
2778
2779 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
2780 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
2781 hw->flags |= SKY2_HW_FIBRE_PHY;
2782
2783
2784 hw->ports = 1;
2785 t8 = sky2_read8(hw, B2_Y2_HW_RES);
2786 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
2787 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2788 ++hw->ports;
2789 }
2790
2791 return 0;
2792 }
2793
2794 static void sky2_reset(struct sky2_hw *hw)
2795 {
2796 struct pci_dev *pdev = hw->pdev;
2797 u16 status;
2798 int i, cap;
2799 u32 hwe_mask = Y2_HWE_ALL_MASK;
2800
2801 /* disable ASF */
2802 if (hw->chip_id == CHIP_ID_YUKON_EX) {
2803 status = sky2_read16(hw, HCU_CCSR);
2804 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
2805 HCU_CCSR_UC_STATE_MSK);
2806 sky2_write16(hw, HCU_CCSR, status);
2807 } else
2808 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2809 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2810
2811 /* do a SW reset */
2812 sky2_write8(hw, B0_CTST, CS_RST_SET);
2813 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2814
2815 /* allow writes to PCI config */
2816 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2817
2818 /* clear PCI errors, if any */
2819 status = sky2_pci_read16(hw, PCI_STATUS);
2820 status |= PCI_STATUS_ERROR_BITS;
2821 sky2_pci_write16(hw, PCI_STATUS, status);
2822
2823 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2824
2825 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
2826 if (cap) {
2827 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2828 0xfffffffful);
2829
2830 /* If error bit is stuck on ignore it */
2831 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
2832 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
2833 else
2834 hwe_mask |= Y2_IS_PCI_EXP;
2835 }
2836
2837 sky2_power_on(hw);
2838 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2839
2840 for (i = 0; i < hw->ports; i++) {
2841 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2842 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2843
2844 if (hw->chip_id == CHIP_ID_YUKON_EX ||
2845 hw->chip_id == CHIP_ID_YUKON_SUPR)
2846 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
2847 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
2848 | GMC_BYP_RETR_ON);
2849 }
2850
2851 /* Clear I2C IRQ noise */
2852 sky2_write32(hw, B2_I2C_IRQ, 1);
2853
2854 /* turn off hardware timer (unused) */
2855 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2856 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
2857
2858 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
2859
2860 /* Turn off descriptor polling */
2861 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
2862
2863 /* Turn off receive timestamp */
2864 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
2865 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2866
2867 /* enable the Tx Arbiters */
2868 for (i = 0; i < hw->ports; i++)
2869 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
2870
2871 /* Initialize ram interface */
2872 for (i = 0; i < hw->ports; i++) {
2873 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
2874
2875 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
2876 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
2877 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
2878 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
2879 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
2880 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
2881 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
2882 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
2883 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
2884 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
2885 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
2886 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
2887 }
2888
2889 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
2890
2891 for (i = 0; i < hw->ports; i++)
2892 sky2_gmac_reset(hw, i);
2893
2894 memset(hw->st_le, 0, STATUS_LE_BYTES);
2895 hw->st_idx = 0;
2896
2897 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
2898 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
2899
2900 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
2901 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
2902
2903 /* Set the list last index */
2904 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
2905
2906 sky2_write16(hw, STAT_TX_IDX_TH, 10);
2907 sky2_write8(hw, STAT_FIFO_WM, 16);
2908
2909 /* set Status-FIFO ISR watermark */
2910 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
2911 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
2912 else
2913 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
2914
2915 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
2916 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
2917 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
2918
2919 /* enable status unit */
2920 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
2921
2922 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2923 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2924 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2925 }
2926
2927 static void sky2_restart(struct work_struct *work)
2928 {
2929 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
2930 struct net_device *dev;
2931 int i, err;
2932
2933 rtnl_lock();
2934 for (i = 0; i < hw->ports; i++) {
2935 dev = hw->dev[i];
2936 if (netif_running(dev))
2937 sky2_down(dev);
2938 }
2939
2940 napi_disable(&hw->napi);
2941 sky2_write32(hw, B0_IMSK, 0);
2942 sky2_reset(hw);
2943 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
2944 napi_enable(&hw->napi);
2945
2946 for (i = 0; i < hw->ports; i++) {
2947 dev = hw->dev[i];
2948 if (netif_running(dev)) {
2949 err = sky2_up(dev);
2950 if (err) {
2951 printk(KERN_INFO PFX "%s: could not restart %d\n",
2952 dev->name, err);
2953 dev_close(dev);
2954 }
2955 }
2956 }
2957
2958 rtnl_unlock();
2959 }
2960
2961 static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
2962 {
2963 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
2964 }
2965
2966 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2967 {
2968 const struct sky2_port *sky2 = netdev_priv(dev);
2969
2970 wol->supported = sky2_wol_supported(sky2->hw);
2971 wol->wolopts = sky2->wol;
2972 }
2973
2974 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2975 {
2976 struct sky2_port *sky2 = netdev_priv(dev);
2977 struct sky2_hw *hw = sky2->hw;
2978
2979 if (wol->wolopts & ~sky2_wol_supported(sky2->hw))
2980 return -EOPNOTSUPP;
2981
2982 sky2->wol = wol->wolopts;
2983
2984 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
2985 hw->chip_id == CHIP_ID_YUKON_EX ||
2986 hw->chip_id == CHIP_ID_YUKON_FE_P)
2987 sky2_write32(hw, B0_CTST, sky2->wol
2988 ? Y2_HW_WOL_ON : Y2_HW_WOL_OFF);
2989
2990 if (!netif_running(dev))
2991 sky2_wol_init(sky2);
2992 return 0;
2993 }
2994
2995 static u32 sky2_supported_modes(const struct sky2_hw *hw)
2996 {
2997 if (sky2_is_copper(hw)) {
2998 u32 modes = SUPPORTED_10baseT_Half
2999 | SUPPORTED_10baseT_Full
3000 | SUPPORTED_100baseT_Half
3001 | SUPPORTED_100baseT_Full
3002 | SUPPORTED_Autoneg | SUPPORTED_TP;
3003
3004 if (hw->flags & SKY2_HW_GIGABIT)
3005 modes |= SUPPORTED_1000baseT_Half
3006 | SUPPORTED_1000baseT_Full;
3007 return modes;
3008 } else
3009 return SUPPORTED_1000baseT_Half
3010 | SUPPORTED_1000baseT_Full
3011 | SUPPORTED_Autoneg
3012 | SUPPORTED_FIBRE;
3013 }
3014
3015 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3016 {
3017 struct sky2_port *sky2 = netdev_priv(dev);
3018 struct sky2_hw *hw = sky2->hw;
3019
3020 ecmd->transceiver = XCVR_INTERNAL;
3021 ecmd->supported = sky2_supported_modes(hw);
3022 ecmd->phy_address = PHY_ADDR_MARV;
3023 if (sky2_is_copper(hw)) {
3024 ecmd->port = PORT_TP;
3025 ecmd->speed = sky2->speed;
3026 } else {
3027 ecmd->speed = SPEED_1000;
3028 ecmd->port = PORT_FIBRE;
3029 }
3030
3031 ecmd->advertising = sky2->advertising;
3032 ecmd->autoneg = sky2->autoneg;
3033 ecmd->duplex = sky2->duplex;
3034 return 0;
3035 }
3036
3037 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3038 {
3039 struct sky2_port *sky2 = netdev_priv(dev);
3040 const struct sky2_hw *hw = sky2->hw;
3041 u32 supported = sky2_supported_modes(hw);
3042
3043 if (ecmd->autoneg == AUTONEG_ENABLE) {
3044 ecmd->advertising = supported;
3045 sky2->duplex = -1;
3046 sky2->speed = -1;
3047 } else {
3048 u32 setting;
3049
3050 switch (ecmd->speed) {
3051 case SPEED_1000:
3052 if (ecmd->duplex == DUPLEX_FULL)
3053 setting = SUPPORTED_1000baseT_Full;
3054 else if (ecmd->duplex == DUPLEX_HALF)
3055 setting = SUPPORTED_1000baseT_Half;
3056 else
3057 return -EINVAL;
3058 break;
3059 case SPEED_100:
3060 if (ecmd->duplex == DUPLEX_FULL)
3061 setting = SUPPORTED_100baseT_Full;
3062 else if (ecmd->duplex == DUPLEX_HALF)
3063 setting = SUPPORTED_100baseT_Half;
3064 else
3065 return -EINVAL;
3066 break;
3067
3068 case SPEED_10:
3069 if (ecmd->duplex == DUPLEX_FULL)
3070 setting = SUPPORTED_10baseT_Full;
3071 else if (ecmd->duplex == DUPLEX_HALF)
3072 setting = SUPPORTED_10baseT_Half;
3073 else
3074 return -EINVAL;
3075 break;
3076 default:
3077 return -EINVAL;
3078 }
3079
3080 if ((setting & supported) == 0)
3081 return -EINVAL;
3082
3083 sky2->speed = ecmd->speed;
3084 sky2->duplex = ecmd->duplex;
3085 }
3086
3087 sky2->autoneg = ecmd->autoneg;
3088 sky2->advertising = ecmd->advertising;
3089
3090 if (netif_running(dev)) {
3091 sky2_phy_reinit(sky2);
3092 sky2_set_multicast(dev);
3093 }
3094
3095 return 0;
3096 }
3097
3098 static void sky2_get_drvinfo(struct net_device *dev,
3099 struct ethtool_drvinfo *info)
3100 {
3101 struct sky2_port *sky2 = netdev_priv(dev);
3102
3103 strcpy(info->driver, DRV_NAME);
3104 strcpy(info->version, DRV_VERSION);
3105 strcpy(info->fw_version, "N/A");
3106 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
3107 }
3108
3109 static const struct sky2_stat {
3110 char name[ETH_GSTRING_LEN];
3111 u16 offset;
3112 } sky2_stats[] = {
3113 { "tx_bytes", GM_TXO_OK_HI },
3114 { "rx_bytes", GM_RXO_OK_HI },
3115 { "tx_broadcast", GM_TXF_BC_OK },
3116 { "rx_broadcast", GM_RXF_BC_OK },
3117 { "tx_multicast", GM_TXF_MC_OK },
3118 { "rx_multicast", GM_RXF_MC_OK },
3119 { "tx_unicast", GM_TXF_UC_OK },
3120 { "rx_unicast", GM_RXF_UC_OK },
3121 { "tx_mac_pause", GM_TXF_MPAUSE },
3122 { "rx_mac_pause", GM_RXF_MPAUSE },
3123 { "collisions", GM_TXF_COL },
3124 { "late_collision",GM_TXF_LAT_COL },
3125 { "aborted", GM_TXF_ABO_COL },
3126 { "single_collisions", GM_TXF_SNG_COL },
3127 { "multi_collisions", GM_TXF_MUL_COL },
3128
3129 { "rx_short", GM_RXF_SHT },
3130 { "rx_runt", GM_RXE_FRAG },
3131 { "rx_64_byte_packets", GM_RXF_64B },
3132 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3133 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3134 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3135 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3136 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3137 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3138 { "rx_too_long", GM_RXF_LNG_ERR },
3139 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3140 { "rx_jabber", GM_RXF_JAB_PKT },
3141 { "rx_fcs_error", GM_RXF_FCS_ERR },
3142
3143 { "tx_64_byte_packets", GM_TXF_64B },
3144 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3145 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3146 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3147 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3148 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3149 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3150 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3151 };
3152
3153 static u32 sky2_get_rx_csum(struct net_device *dev)
3154 {
3155 struct sky2_port *sky2 = netdev_priv(dev);
3156
3157 return sky2->rx_csum;
3158 }
3159
3160 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
3161 {
3162 struct sky2_port *sky2 = netdev_priv(dev);
3163
3164 sky2->rx_csum = data;
3165
3166 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
3167 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
3168
3169 return 0;
3170 }
3171
3172 static u32 sky2_get_msglevel(struct net_device *netdev)
3173 {
3174 struct sky2_port *sky2 = netdev_priv(netdev);
3175 return sky2->msg_enable;
3176 }
3177
3178 static int sky2_nway_reset(struct net_device *dev)
3179 {
3180 struct sky2_port *sky2 = netdev_priv(dev);
3181
3182 if (!netif_running(dev) || sky2->autoneg != AUTONEG_ENABLE)
3183 return -EINVAL;
3184
3185 sky2_phy_reinit(sky2);
3186 sky2_set_multicast(dev);
3187
3188 return 0;
3189 }
3190
3191 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3192 {
3193 struct sky2_hw *hw = sky2->hw;
3194 unsigned port = sky2->port;
3195 int i;
3196
3197 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
3198 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
3199 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
3200 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
3201
3202 for (i = 2; i < count; i++)
3203 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
3204 }
3205
3206 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3207 {
3208 struct sky2_port *sky2 = netdev_priv(netdev);
3209 sky2->msg_enable = value;
3210 }
3211
3212 static int sky2_get_sset_count(struct net_device *dev, int sset)
3213 {
3214 switch (sset) {
3215 case ETH_SS_STATS:
3216 return ARRAY_SIZE(sky2_stats);
3217 default:
3218 return -EOPNOTSUPP;
3219 }
3220 }
3221
3222 static void sky2_get_ethtool_stats(struct net_device *dev,
3223 struct ethtool_stats *stats, u64 * data)
3224 {
3225 struct sky2_port *sky2 = netdev_priv(dev);
3226
3227 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3228 }
3229
3230 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3231 {
3232 int i;
3233
3234 switch (stringset) {
3235 case ETH_SS_STATS:
3236 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3237 memcpy(data + i * ETH_GSTRING_LEN,
3238 sky2_stats[i].name, ETH_GSTRING_LEN);
3239 break;
3240 }
3241 }
3242
3243 static int sky2_set_mac_address(struct net_device *dev, void *p)
3244 {
3245 struct sky2_port *sky2 = netdev_priv(dev);
3246 struct sky2_hw *hw = sky2->hw;
3247 unsigned port = sky2->port;
3248 const struct sockaddr *addr = p;
3249
3250 if (!is_valid_ether_addr(addr->sa_data))
3251 return -EADDRNOTAVAIL;
3252
3253 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3254 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3255 dev->dev_addr, ETH_ALEN);
3256 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3257 dev->dev_addr, ETH_ALEN);
3258
3259 /* virtual address for data */
3260 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3261
3262 /* physical address: used for pause frames */
3263 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3264
3265 return 0;
3266 }
3267
3268 static void inline sky2_add_filter(u8 filter[8], const u8 *addr)
3269 {
3270 u32 bit;
3271
3272 bit = ether_crc(ETH_ALEN, addr) & 63;
3273 filter[bit >> 3] |= 1 << (bit & 7);
3274 }
3275
3276 static void sky2_set_multicast(struct net_device *dev)
3277 {
3278 struct sky2_port *sky2 = netdev_priv(dev);
3279 struct sky2_hw *hw = sky2->hw;
3280 unsigned port = sky2->port;
3281 struct dev_mc_list *list = dev->mc_list;
3282 u16 reg;
3283 u8 filter[8];
3284 int rx_pause;
3285 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3286
3287 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3288 memset(filter, 0, sizeof(filter));
3289
3290 reg = gma_read16(hw, port, GM_RX_CTRL);
3291 reg |= GM_RXCR_UCF_ENA;
3292
3293 if (dev->flags & IFF_PROMISC) /* promiscuous */
3294 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3295 else if (dev->flags & IFF_ALLMULTI)
3296 memset(filter, 0xff, sizeof(filter));
3297 else if (dev->mc_count == 0 && !rx_pause)
3298 reg &= ~GM_RXCR_MCF_ENA;
3299 else {
3300 int i;
3301 reg |= GM_RXCR_MCF_ENA;
3302
3303 if (rx_pause)
3304 sky2_add_filter(filter, pause_mc_addr);
3305
3306 for (i = 0; list && i < dev->mc_count; i++, list = list->next)
3307 sky2_add_filter(filter, list->dmi_addr);
3308 }
3309
3310 gma_write16(hw, port, GM_MC_ADDR_H1,
3311 (u16) filter[0] | ((u16) filter[1] << 8));
3312 gma_write16(hw, port, GM_MC_ADDR_H2,
3313 (u16) filter[2] | ((u16) filter[3] << 8));
3314 gma_write16(hw, port, GM_MC_ADDR_H3,
3315 (u16) filter[4] | ((u16) filter[5] << 8));
3316 gma_write16(hw, port, GM_MC_ADDR_H4,
3317 (u16) filter[6] | ((u16) filter[7] << 8));
3318
3319 gma_write16(hw, port, GM_RX_CTRL, reg);
3320 }
3321
3322 /* Can have one global because blinking is controlled by
3323 * ethtool and that is always under RTNL mutex
3324 */
3325 static void sky2_led(struct sky2_hw *hw, unsigned port, int on)
3326 {
3327 u16 pg;
3328
3329 switch (hw->chip_id) {
3330 case CHIP_ID_YUKON_XL:
3331 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3332 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3333 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3334 on ? (PHY_M_LEDC_LOS_CTRL(1) |
3335 PHY_M_LEDC_INIT_CTRL(7) |
3336 PHY_M_LEDC_STA1_CTRL(7) |
3337 PHY_M_LEDC_STA0_CTRL(7))
3338 : 0);
3339
3340 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3341 break;
3342
3343 default:
3344 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
3345 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3346 on ? PHY_M_LED_ALL : 0);
3347 }
3348 }
3349
3350 /* blink LED's for finding board */
3351 static int sky2_phys_id(struct net_device *dev, u32 data)
3352 {
3353 struct sky2_port *sky2 = netdev_priv(dev);
3354 struct sky2_hw *hw = sky2->hw;
3355 unsigned port = sky2->port;
3356 u16 ledctrl, ledover = 0;
3357 long ms;
3358 int interrupted;
3359 int onoff = 1;
3360
3361 if (!data || data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ))
3362 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT);
3363 else
3364 ms = data * 1000;
3365
3366 /* save initial values */
3367 spin_lock_bh(&sky2->phy_lock);
3368 if (hw->chip_id == CHIP_ID_YUKON_XL) {
3369 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3370 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3371 ledctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
3372 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3373 } else {
3374 ledctrl = gm_phy_read(hw, port, PHY_MARV_LED_CTRL);
3375 ledover = gm_phy_read(hw, port, PHY_MARV_LED_OVER);
3376 }
3377
3378 interrupted = 0;
3379 while (!interrupted && ms > 0) {
3380 sky2_led(hw, port, onoff);
3381 onoff = !onoff;
3382
3383 spin_unlock_bh(&sky2->phy_lock);
3384 interrupted = msleep_interruptible(250);
3385 spin_lock_bh(&sky2->phy_lock);
3386
3387 ms -= 250;
3388 }
3389
3390 /* resume regularly scheduled programming */
3391 if (hw->chip_id == CHIP_ID_YUKON_XL) {
3392 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3393 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3394 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ledctrl);
3395 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3396 } else {
3397 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
3398 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
3399 }
3400 spin_unlock_bh(&sky2->phy_lock);
3401
3402 return 0;
3403 }
3404
3405 static void sky2_get_pauseparam(struct net_device *dev,
3406 struct ethtool_pauseparam *ecmd)
3407 {
3408 struct sky2_port *sky2 = netdev_priv(dev);
3409
3410 switch (sky2->flow_mode) {
3411 case FC_NONE:
3412 ecmd->tx_pause = ecmd->rx_pause = 0;
3413 break;
3414 case FC_TX:
3415 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
3416 break;
3417 case FC_RX:
3418 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
3419 break;
3420 case FC_BOTH:
3421 ecmd->tx_pause = ecmd->rx_pause = 1;
3422 }
3423
3424 ecmd->autoneg = sky2->autoneg;
3425 }
3426
3427 static int sky2_set_pauseparam(struct net_device *dev,
3428 struct ethtool_pauseparam *ecmd)
3429 {
3430 struct sky2_port *sky2 = netdev_priv(dev);
3431
3432 sky2->autoneg = ecmd->autoneg;
3433 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
3434
3435 if (netif_running(dev))
3436 sky2_phy_reinit(sky2);
3437
3438 return 0;
3439 }
3440
3441 static int sky2_get_coalesce(struct net_device *dev,
3442 struct ethtool_coalesce *ecmd)
3443 {
3444 struct sky2_port *sky2 = netdev_priv(dev);
3445 struct sky2_hw *hw = sky2->hw;
3446
3447 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
3448 ecmd->tx_coalesce_usecs = 0;
3449 else {
3450 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
3451 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
3452 }
3453 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
3454
3455 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
3456 ecmd->rx_coalesce_usecs = 0;
3457 else {
3458 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
3459 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
3460 }
3461 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
3462
3463 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
3464 ecmd->rx_coalesce_usecs_irq = 0;
3465 else {
3466 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
3467 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
3468 }
3469
3470 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
3471
3472 return 0;
3473 }
3474
3475 /* Note: this affect both ports */
3476 static int sky2_set_coalesce(struct net_device *dev,
3477 struct ethtool_coalesce *ecmd)
3478 {
3479 struct sky2_port *sky2 = netdev_priv(dev);
3480 struct sky2_hw *hw = sky2->hw;
3481 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
3482
3483 if (ecmd->tx_coalesce_usecs > tmax ||
3484 ecmd->rx_coalesce_usecs > tmax ||
3485 ecmd->rx_coalesce_usecs_irq > tmax)
3486 return -EINVAL;
3487
3488 if (ecmd->tx_max_coalesced_frames >= TX_RING_SIZE-1)
3489 return -EINVAL;
3490 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
3491 return -EINVAL;
3492 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
3493 return -EINVAL;
3494
3495 if (ecmd->tx_coalesce_usecs == 0)
3496 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
3497 else {
3498 sky2_write32(hw, STAT_TX_TIMER_INI,
3499 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
3500 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3501 }
3502 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
3503
3504 if (ecmd->rx_coalesce_usecs == 0)
3505 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
3506 else {
3507 sky2_write32(hw, STAT_LEV_TIMER_INI,
3508 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
3509 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3510 }
3511 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
3512
3513 if (ecmd->rx_coalesce_usecs_irq == 0)
3514 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
3515 else {
3516 sky2_write32(hw, STAT_ISR_TIMER_INI,
3517 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
3518 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3519 }
3520 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
3521 return 0;
3522 }
3523
3524 static void sky2_get_ringparam(struct net_device *dev,
3525 struct ethtool_ringparam *ering)
3526 {
3527 struct sky2_port *sky2 = netdev_priv(dev);
3528
3529 ering->rx_max_pending = RX_MAX_PENDING;
3530 ering->rx_mini_max_pending = 0;
3531 ering->rx_jumbo_max_pending = 0;
3532 ering->tx_max_pending = TX_RING_SIZE - 1;
3533
3534 ering->rx_pending = sky2->rx_pending;
3535 ering->rx_mini_pending = 0;
3536 ering->rx_jumbo_pending = 0;
3537 ering->tx_pending = sky2->tx_pending;
3538 }
3539
3540 static int sky2_set_ringparam(struct net_device *dev,
3541 struct ethtool_ringparam *ering)
3542 {
3543 struct sky2_port *sky2 = netdev_priv(dev);
3544 int err = 0;
3545
3546 if (ering->rx_pending > RX_MAX_PENDING ||
3547 ering->rx_pending < 8 ||
3548 ering->tx_pending < MAX_SKB_TX_LE ||
3549 ering->tx_pending > TX_RING_SIZE - 1)
3550 return -EINVAL;
3551
3552 if (netif_running(dev))
3553 sky2_down(dev);
3554
3555 sky2->rx_pending = ering->rx_pending;
3556 sky2->tx_pending = ering->tx_pending;
3557
3558 if (netif_running(dev)) {
3559 err = sky2_up(dev);
3560 if (err)
3561 dev_close(dev);
3562 }
3563
3564 return err;
3565 }
3566
3567 static int sky2_get_regs_len(struct net_device *dev)
3568 {
3569 return 0x4000;
3570 }
3571
3572 /*
3573 * Returns copy of control register region
3574 * Note: ethtool_get_regs always provides full size (16k) buffer
3575 */
3576 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
3577 void *p)
3578 {
3579 const struct sky2_port *sky2 = netdev_priv(dev);
3580 const void __iomem *io = sky2->hw->regs;
3581 unsigned int b;
3582
3583 regs->version = 1;
3584
3585 for (b = 0; b < 128; b++) {
3586 /* This complicated switch statement is to make sure and
3587 * only access regions that are unreserved.
3588 * Some blocks are only valid on dual port cards.
3589 * and block 3 has some special diagnostic registers that
3590 * are poison.
3591 */
3592 switch (b) {
3593 case 3:
3594 /* skip diagnostic ram region */
3595 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
3596 break;
3597
3598 /* dual port cards only */
3599 case 5: /* Tx Arbiter 2 */
3600 case 9: /* RX2 */
3601 case 14 ... 15: /* TX2 */
3602 case 17: case 19: /* Ram Buffer 2 */
3603 case 22 ... 23: /* Tx Ram Buffer 2 */
3604 case 25: /* Rx MAC Fifo 1 */
3605 case 27: /* Tx MAC Fifo 2 */
3606 case 31: /* GPHY 2 */
3607 case 40 ... 47: /* Pattern Ram 2 */
3608 case 52: case 54: /* TCP Segmentation 2 */
3609 case 112 ... 116: /* GMAC 2 */
3610 if (sky2->hw->ports == 1)
3611 goto reserved;
3612 /* fall through */
3613 case 0: /* Control */
3614 case 2: /* Mac address */
3615 case 4: /* Tx Arbiter 1 */
3616 case 7: /* PCI express reg */
3617 case 8: /* RX1 */
3618 case 12 ... 13: /* TX1 */
3619 case 16: case 18:/* Rx Ram Buffer 1 */
3620 case 20 ... 21: /* Tx Ram Buffer 1 */
3621 case 24: /* Rx MAC Fifo 1 */
3622 case 26: /* Tx MAC Fifo 1 */
3623 case 28 ... 29: /* Descriptor and status unit */
3624 case 30: /* GPHY 1*/
3625 case 32 ... 39: /* Pattern Ram 1 */
3626 case 48: case 50: /* TCP Segmentation 1 */
3627 case 56 ... 60: /* PCI space */
3628 case 80 ... 84: /* GMAC 1 */
3629 memcpy_fromio(p, io, 128);
3630 break;
3631 default:
3632 reserved:
3633 memset(p, 0, 128);
3634 }
3635
3636 p += 128;
3637 io += 128;
3638 }
3639 }
3640
3641 /* In order to do Jumbo packets on these chips, need to turn off the
3642 * transmit store/forward. Therefore checksum offload won't work.
3643 */
3644 static int no_tx_offload(struct net_device *dev)
3645 {
3646 const struct sky2_port *sky2 = netdev_priv(dev);
3647 const struct sky2_hw *hw = sky2->hw;
3648
3649 return dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U;
3650 }
3651
3652 static int sky2_set_tx_csum(struct net_device *dev, u32 data)
3653 {
3654 if (data && no_tx_offload(dev))
3655 return -EINVAL;
3656
3657 return ethtool_op_set_tx_csum(dev, data);
3658 }
3659
3660
3661 static int sky2_set_tso(struct net_device *dev, u32 data)
3662 {
3663 if (data && no_tx_offload(dev))
3664 return -EINVAL;
3665
3666 return ethtool_op_set_tso(dev, data);
3667 }
3668
3669 static int sky2_get_eeprom_len(struct net_device *dev)
3670 {
3671 struct sky2_port *sky2 = netdev_priv(dev);
3672 struct sky2_hw *hw = sky2->hw;
3673 u16 reg2;
3674
3675 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
3676 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
3677 }
3678
3679 static u32 sky2_vpd_read(struct sky2_hw *hw, int cap, u16 offset)
3680 {
3681 u32 val;
3682
3683 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
3684
3685 do {
3686 offset = sky2_pci_read16(hw, cap + PCI_VPD_ADDR);
3687 } while (!(offset & PCI_VPD_ADDR_F));
3688
3689 val = sky2_pci_read32(hw, cap + PCI_VPD_DATA);
3690 return val;
3691 }
3692
3693 static void sky2_vpd_write(struct sky2_hw *hw, int cap, u16 offset, u32 val)
3694 {
3695 sky2_pci_write16(hw, cap + PCI_VPD_DATA, val);
3696 sky2_pci_write32(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
3697 do {
3698 offset = sky2_pci_read16(hw, cap + PCI_VPD_ADDR);
3699 } while (offset & PCI_VPD_ADDR_F);
3700 }
3701
3702 static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
3703 u8 *data)
3704 {
3705 struct sky2_port *sky2 = netdev_priv(dev);
3706 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
3707 int length = eeprom->len;
3708 u16 offset = eeprom->offset;
3709
3710 if (!cap)
3711 return -EINVAL;
3712
3713 eeprom->magic = SKY2_EEPROM_MAGIC;
3714
3715 while (length > 0) {
3716 u32 val = sky2_vpd_read(sky2->hw, cap, offset);
3717 int n = min_t(int, length, sizeof(val));
3718
3719 memcpy(data, &val, n);
3720 length -= n;
3721 data += n;
3722 offset += n;
3723 }
3724 return 0;
3725 }
3726
3727 static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
3728 u8 *data)
3729 {
3730 struct sky2_port *sky2 = netdev_priv(dev);
3731 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
3732 int length = eeprom->len;
3733 u16 offset = eeprom->offset;
3734
3735 if (!cap)
3736 return -EINVAL;
3737
3738 if (eeprom->magic != SKY2_EEPROM_MAGIC)
3739 return -EINVAL;
3740
3741 while (length > 0) {
3742 u32 val;
3743 int n = min_t(int, length, sizeof(val));
3744
3745 if (n < sizeof(val))
3746 val = sky2_vpd_read(sky2->hw, cap, offset);
3747 memcpy(&val, data, n);
3748
3749 sky2_vpd_write(sky2->hw, cap, offset, val);
3750
3751 length -= n;
3752 data += n;
3753 offset += n;
3754 }
3755 return 0;
3756 }
3757
3758
3759 static const struct ethtool_ops sky2_ethtool_ops = {
3760 .get_settings = sky2_get_settings,
3761 .set_settings = sky2_set_settings,
3762 .get_drvinfo = sky2_get_drvinfo,
3763 .get_wol = sky2_get_wol,
3764 .set_wol = sky2_set_wol,
3765 .get_msglevel = sky2_get_msglevel,
3766 .set_msglevel = sky2_set_msglevel,
3767 .nway_reset = sky2_nway_reset,
3768 .get_regs_len = sky2_get_regs_len,
3769 .get_regs = sky2_get_regs,
3770 .get_link = ethtool_op_get_link,
3771 .get_eeprom_len = sky2_get_eeprom_len,
3772 .get_eeprom = sky2_get_eeprom,
3773 .set_eeprom = sky2_set_eeprom,
3774 .set_sg = ethtool_op_set_sg,
3775 .set_tx_csum = sky2_set_tx_csum,
3776 .set_tso = sky2_set_tso,
3777 .get_rx_csum = sky2_get_rx_csum,
3778 .set_rx_csum = sky2_set_rx_csum,
3779 .get_strings = sky2_get_strings,
3780 .get_coalesce = sky2_get_coalesce,
3781 .set_coalesce = sky2_set_coalesce,
3782 .get_ringparam = sky2_get_ringparam,
3783 .set_ringparam = sky2_set_ringparam,
3784 .get_pauseparam = sky2_get_pauseparam,
3785 .set_pauseparam = sky2_set_pauseparam,
3786 .phys_id = sky2_phys_id,
3787 .get_sset_count = sky2_get_sset_count,
3788 .get_ethtool_stats = sky2_get_ethtool_stats,
3789 };
3790
3791 #ifdef CONFIG_SKY2_DEBUG
3792
3793 static struct dentry *sky2_debug;
3794
3795 static int sky2_debug_show(struct seq_file *seq, void *v)
3796 {
3797 struct net_device *dev = seq->private;
3798 const struct sky2_port *sky2 = netdev_priv(dev);
3799 struct sky2_hw *hw = sky2->hw;
3800 unsigned port = sky2->port;
3801 unsigned idx, last;
3802 int sop;
3803
3804 if (!netif_running(dev))
3805 return -ENETDOWN;
3806
3807 seq_printf(seq, "IRQ src=%x mask=%x control=%x\n",
3808 sky2_read32(hw, B0_ISRC),
3809 sky2_read32(hw, B0_IMSK),
3810 sky2_read32(hw, B0_Y2_SP_ICR));
3811
3812 napi_disable(&hw->napi);
3813 last = sky2_read16(hw, STAT_PUT_IDX);
3814
3815 if (hw->st_idx == last)
3816 seq_puts(seq, "Status ring (empty)\n");
3817 else {
3818 seq_puts(seq, "Status ring\n");
3819 for (idx = hw->st_idx; idx != last && idx < STATUS_RING_SIZE;
3820 idx = RING_NEXT(idx, STATUS_RING_SIZE)) {
3821 const struct sky2_status_le *le = hw->st_le + idx;
3822 seq_printf(seq, "[%d] %#x %d %#x\n",
3823 idx, le->opcode, le->length, le->status);
3824 }
3825 seq_puts(seq, "\n");
3826 }
3827
3828 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
3829 sky2->tx_cons, sky2->tx_prod,
3830 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
3831 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
3832
3833 /* Dump contents of tx ring */
3834 sop = 1;
3835 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < TX_RING_SIZE;
3836 idx = RING_NEXT(idx, TX_RING_SIZE)) {
3837 const struct sky2_tx_le *le = sky2->tx_le + idx;
3838 u32 a = le32_to_cpu(le->addr);
3839
3840 if (sop)
3841 seq_printf(seq, "%u:", idx);
3842 sop = 0;
3843
3844 switch(le->opcode & ~HW_OWNER) {
3845 case OP_ADDR64:
3846 seq_printf(seq, " %#x:", a);
3847 break;
3848 case OP_LRGLEN:
3849 seq_printf(seq, " mtu=%d", a);
3850 break;
3851 case OP_VLAN:
3852 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
3853 break;
3854 case OP_TCPLISW:
3855 seq_printf(seq, " csum=%#x", a);
3856 break;
3857 case OP_LARGESEND:
3858 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
3859 break;
3860 case OP_PACKET:
3861 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
3862 break;
3863 case OP_BUFFER:
3864 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
3865 break;
3866 default:
3867 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
3868 a, le16_to_cpu(le->length));
3869 }
3870
3871 if (le->ctrl & EOP) {
3872 seq_putc(seq, '\n');
3873 sop = 1;
3874 }
3875 }
3876
3877 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
3878 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
3879 last = sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
3880 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
3881
3882 sky2_read32(hw, B0_Y2_SP_LISR);
3883 napi_enable(&hw->napi);
3884 return 0;
3885 }
3886
3887 static int sky2_debug_open(struct inode *inode, struct file *file)
3888 {
3889 return single_open(file, sky2_debug_show, inode->i_private);
3890 }
3891
3892 static const struct file_operations sky2_debug_fops = {
3893 .owner = THIS_MODULE,
3894 .open = sky2_debug_open,
3895 .read = seq_read,
3896 .llseek = seq_lseek,
3897 .release = single_release,
3898 };
3899
3900 /*
3901 * Use network device events to create/remove/rename
3902 * debugfs file entries
3903 */
3904 static int sky2_device_event(struct notifier_block *unused,
3905 unsigned long event, void *ptr)
3906 {
3907 struct net_device *dev = ptr;
3908 struct sky2_port *sky2 = netdev_priv(dev);
3909
3910 if (dev->open != sky2_up || !sky2_debug)
3911 return NOTIFY_DONE;
3912
3913 switch(event) {
3914 case NETDEV_CHANGENAME:
3915 if (sky2->debugfs) {
3916 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
3917 sky2_debug, dev->name);
3918 }
3919 break;
3920
3921 case NETDEV_GOING_DOWN:
3922 if (sky2->debugfs) {
3923 printk(KERN_DEBUG PFX "%s: remove debugfs\n",
3924 dev->name);
3925 debugfs_remove(sky2->debugfs);
3926 sky2->debugfs = NULL;
3927 }
3928 break;
3929
3930 case NETDEV_UP:
3931 sky2->debugfs = debugfs_create_file(dev->name, S_IRUGO,
3932 sky2_debug, dev,
3933 &sky2_debug_fops);
3934 if (IS_ERR(sky2->debugfs))
3935 sky2->debugfs = NULL;
3936 }
3937
3938 return NOTIFY_DONE;
3939 }
3940
3941 static struct notifier_block sky2_notifier = {
3942 .notifier_call = sky2_device_event,
3943 };
3944
3945
3946 static __init void sky2_debug_init(void)
3947 {
3948 struct dentry *ent;
3949
3950 ent = debugfs_create_dir("sky2", NULL);
3951 if (!ent || IS_ERR(ent))
3952 return;
3953
3954 sky2_debug = ent;
3955 register_netdevice_notifier(&sky2_notifier);
3956 }
3957
3958 static __exit void sky2_debug_cleanup(void)
3959 {
3960 if (sky2_debug) {
3961 unregister_netdevice_notifier(&sky2_notifier);
3962 debugfs_remove(sky2_debug);
3963 sky2_debug = NULL;
3964 }
3965 }
3966
3967 #else
3968 #define sky2_debug_init()
3969 #define sky2_debug_cleanup()
3970 #endif
3971
3972
3973 /* Initialize network device */
3974 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
3975 unsigned port,
3976 int highmem, int wol)
3977 {
3978 struct sky2_port *sky2;
3979 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
3980
3981 if (!dev) {
3982 dev_err(&hw->pdev->dev, "etherdev alloc failed\n");
3983 return NULL;
3984 }
3985
3986 SET_NETDEV_DEV(dev, &hw->pdev->dev);
3987 dev->irq = hw->pdev->irq;
3988 dev->open = sky2_up;
3989 dev->stop = sky2_down;
3990 dev->do_ioctl = sky2_ioctl;
3991 dev->hard_start_xmit = sky2_xmit_frame;
3992 dev->set_multicast_list = sky2_set_multicast;
3993 dev->set_mac_address = sky2_set_mac_address;
3994 dev->change_mtu = sky2_change_mtu;
3995 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
3996 dev->tx_timeout = sky2_tx_timeout;
3997 dev->watchdog_timeo = TX_WATCHDOG;
3998 #ifdef CONFIG_NET_POLL_CONTROLLER
3999 if (port == 0)
4000 dev->poll_controller = sky2_netpoll;
4001 #endif
4002
4003 sky2 = netdev_priv(dev);
4004 sky2->netdev = dev;
4005 sky2->hw = hw;
4006 sky2->msg_enable = netif_msg_init(debug, default_msg);
4007
4008 /* Auto speed and flow control */
4009 sky2->autoneg = AUTONEG_ENABLE;
4010 sky2->flow_mode = FC_BOTH;
4011
4012 sky2->duplex = -1;
4013 sky2->speed = -1;
4014 sky2->advertising = sky2_supported_modes(hw);
4015 sky2->rx_csum = (hw->chip_id != CHIP_ID_YUKON_XL);
4016 sky2->wol = wol;
4017
4018 spin_lock_init(&sky2->phy_lock);
4019 sky2->tx_pending = TX_DEF_PENDING;
4020 sky2->rx_pending = RX_DEF_PENDING;
4021
4022 hw->dev[port] = dev;
4023
4024 sky2->port = port;
4025
4026 dev->features |= NETIF_F_TSO | NETIF_F_IP_CSUM | NETIF_F_SG;
4027 if (highmem)
4028 dev->features |= NETIF_F_HIGHDMA;
4029
4030 #ifdef SKY2_VLAN_TAG_USED
4031 /* The workaround for FE+ status conflicts with VLAN tag detection. */
4032 if (!(sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
4033 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0)) {
4034 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
4035 dev->vlan_rx_register = sky2_vlan_rx_register;
4036 }
4037 #endif
4038
4039 /* read the mac address */
4040 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
4041 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
4042
4043 return dev;
4044 }
4045
4046 static void __devinit sky2_show_addr(struct net_device *dev)
4047 {
4048 const struct sky2_port *sky2 = netdev_priv(dev);
4049 DECLARE_MAC_BUF(mac);
4050
4051 if (netif_msg_probe(sky2))
4052 printk(KERN_INFO PFX "%s: addr %s\n",
4053 dev->name, print_mac(mac, dev->dev_addr));
4054 }
4055
4056 /* Handle software interrupt used during MSI test */
4057 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
4058 {
4059 struct sky2_hw *hw = dev_id;
4060 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4061
4062 if (status == 0)
4063 return IRQ_NONE;
4064
4065 if (status & Y2_IS_IRQ_SW) {
4066 hw->flags |= SKY2_HW_USE_MSI;
4067 wake_up(&hw->msi_wait);
4068 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4069 }
4070 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4071
4072 return IRQ_HANDLED;
4073 }
4074
4075 /* Test interrupt path by forcing a a software IRQ */
4076 static int __devinit sky2_test_msi(struct sky2_hw *hw)
4077 {
4078 struct pci_dev *pdev = hw->pdev;
4079 int err;
4080
4081 init_waitqueue_head (&hw->msi_wait);
4082
4083 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4084
4085 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4086 if (err) {
4087 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4088 return err;
4089 }
4090
4091 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4092 sky2_read8(hw, B0_CTST);
4093
4094 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4095
4096 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4097 /* MSI test failed, go back to INTx mode */
4098 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4099 "switching to INTx mode.\n");
4100
4101 err = -EOPNOTSUPP;
4102 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4103 }
4104
4105 sky2_write32(hw, B0_IMSK, 0);
4106 sky2_read32(hw, B0_IMSK);
4107
4108 free_irq(pdev->irq, hw);
4109
4110 return err;
4111 }
4112
4113 static int __devinit pci_wake_enabled(struct pci_dev *dev)
4114 {
4115 int pm = pci_find_capability(dev, PCI_CAP_ID_PM);
4116 u16 value;
4117
4118 if (!pm)
4119 return 0;
4120 if (pci_read_config_word(dev, pm + PCI_PM_CTRL, &value))
4121 return 0;
4122 return value & PCI_PM_CTRL_PME_ENABLE;
4123 }
4124
4125 static int __devinit sky2_probe(struct pci_dev *pdev,
4126 const struct pci_device_id *ent)
4127 {
4128 struct net_device *dev;
4129 struct sky2_hw *hw;
4130 int err, using_dac = 0, wol_default;
4131
4132 err = pci_enable_device(pdev);
4133 if (err) {
4134 dev_err(&pdev->dev, "cannot enable PCI device\n");
4135 goto err_out;
4136 }
4137
4138 err = pci_request_regions(pdev, DRV_NAME);
4139 if (err) {
4140 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4141 goto err_out_disable;
4142 }
4143
4144 pci_set_master(pdev);
4145
4146 if (sizeof(dma_addr_t) > sizeof(u32) &&
4147 !(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
4148 using_dac = 1;
4149 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4150 if (err < 0) {
4151 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4152 "for consistent allocations\n");
4153 goto err_out_free_regions;
4154 }
4155 } else {
4156 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4157 if (err) {
4158 dev_err(&pdev->dev, "no usable DMA configuration\n");
4159 goto err_out_free_regions;
4160 }
4161 }
4162
4163 wol_default = pci_wake_enabled(pdev) ? WAKE_MAGIC : 0;
4164
4165 err = -ENOMEM;
4166 hw = kzalloc(sizeof(*hw), GFP_KERNEL);
4167 if (!hw) {
4168 dev_err(&pdev->dev, "cannot allocate hardware struct\n");
4169 goto err_out_free_regions;
4170 }
4171
4172 hw->pdev = pdev;
4173
4174 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
4175 if (!hw->regs) {
4176 dev_err(&pdev->dev, "cannot map device registers\n");
4177 goto err_out_free_hw;
4178 }
4179
4180 #ifdef __BIG_ENDIAN
4181 /* The sk98lin vendor driver uses hardware byte swapping but
4182 * this driver uses software swapping.
4183 */
4184 {
4185 u32 reg;
4186 reg = sky2_pci_read32(hw, PCI_DEV_REG2);
4187 reg &= ~PCI_REV_DESC;
4188 sky2_pci_write32(hw, PCI_DEV_REG2, reg);
4189 }
4190 #endif
4191
4192 /* ring for status responses */
4193 hw->st_le = pci_alloc_consistent(pdev, STATUS_LE_BYTES, &hw->st_dma);
4194 if (!hw->st_le)
4195 goto err_out_iounmap;
4196
4197 err = sky2_init(hw);
4198 if (err)
4199 goto err_out_iounmap;
4200
4201 dev_info(&pdev->dev, "v%s addr 0x%llx irq %d Yukon-%s (0x%x) rev %d\n",
4202 DRV_VERSION, (unsigned long long)pci_resource_start(pdev, 0),
4203 pdev->irq, yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
4204 hw->chip_id, hw->chip_rev);
4205
4206 sky2_reset(hw);
4207
4208 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
4209 if (!dev) {
4210 err = -ENOMEM;
4211 goto err_out_free_pci;
4212 }
4213
4214 if (!disable_msi && pci_enable_msi(pdev) == 0) {
4215 err = sky2_test_msi(hw);
4216 if (err == -EOPNOTSUPP)
4217 pci_disable_msi(pdev);
4218 else if (err)
4219 goto err_out_free_netdev;
4220 }
4221
4222 err = register_netdev(dev);
4223 if (err) {
4224 dev_err(&pdev->dev, "cannot register net device\n");
4225 goto err_out_free_netdev;
4226 }
4227
4228 netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
4229
4230 err = request_irq(pdev->irq, sky2_intr,
4231 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
4232 dev->name, hw);
4233 if (err) {
4234 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4235 goto err_out_unregister;
4236 }
4237 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4238 napi_enable(&hw->napi);
4239
4240 sky2_show_addr(dev);
4241
4242 if (hw->ports > 1) {
4243 struct net_device *dev1;
4244
4245 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
4246 if (!dev1)
4247 dev_warn(&pdev->dev, "allocation for second device failed\n");
4248 else if ((err = register_netdev(dev1))) {
4249 dev_warn(&pdev->dev,
4250 "register of second port failed (%d)\n", err);
4251 hw->dev[1] = NULL;
4252 free_netdev(dev1);
4253 } else
4254 sky2_show_addr(dev1);
4255 }
4256
4257 setup_timer(&hw->watchdog_timer, sky2_watchdog, (unsigned long) hw);
4258 INIT_WORK(&hw->restart_work, sky2_restart);
4259
4260 pci_set_drvdata(pdev, hw);
4261
4262 return 0;
4263
4264 err_out_unregister:
4265 if (hw->flags & SKY2_HW_USE_MSI)
4266 pci_disable_msi(pdev);
4267 unregister_netdev(dev);
4268 err_out_free_netdev:
4269 free_netdev(dev);
4270 err_out_free_pci:
4271 sky2_write8(hw, B0_CTST, CS_RST_SET);
4272 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4273 err_out_iounmap:
4274 iounmap(hw->regs);
4275 err_out_free_hw:
4276 kfree(hw);
4277 err_out_free_regions:
4278 pci_release_regions(pdev);
4279 err_out_disable:
4280 pci_disable_device(pdev);
4281 err_out:
4282 pci_set_drvdata(pdev, NULL);
4283 return err;
4284 }
4285
4286 static void __devexit sky2_remove(struct pci_dev *pdev)
4287 {
4288 struct sky2_hw *hw = pci_get_drvdata(pdev);
4289 int i;
4290
4291 if (!hw)
4292 return;
4293
4294 del_timer_sync(&hw->watchdog_timer);
4295 cancel_work_sync(&hw->restart_work);
4296
4297 for (i = hw->ports-1; i >= 0; --i)
4298 unregister_netdev(hw->dev[i]);
4299
4300 sky2_write32(hw, B0_IMSK, 0);
4301
4302 sky2_power_aux(hw);
4303
4304 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
4305 sky2_write8(hw, B0_CTST, CS_RST_SET);
4306 sky2_read8(hw, B0_CTST);
4307
4308 free_irq(pdev->irq, hw);
4309 if (hw->flags & SKY2_HW_USE_MSI)
4310 pci_disable_msi(pdev);
4311 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4312 pci_release_regions(pdev);
4313 pci_disable_device(pdev);
4314
4315 for (i = hw->ports-1; i >= 0; --i)
4316 free_netdev(hw->dev[i]);
4317
4318 iounmap(hw->regs);
4319 kfree(hw);
4320
4321 pci_set_drvdata(pdev, NULL);
4322 }
4323
4324 #ifdef CONFIG_PM
4325 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
4326 {
4327 struct sky2_hw *hw = pci_get_drvdata(pdev);
4328 int i, wol = 0;
4329
4330 if (!hw)
4331 return 0;
4332
4333 for (i = 0; i < hw->ports; i++) {
4334 struct net_device *dev = hw->dev[i];
4335 struct sky2_port *sky2 = netdev_priv(dev);
4336
4337 if (netif_running(dev))
4338 sky2_down(dev);
4339
4340 if (sky2->wol)
4341 sky2_wol_init(sky2);
4342
4343 wol |= sky2->wol;
4344 }
4345
4346 sky2_write32(hw, B0_IMSK, 0);
4347 napi_disable(&hw->napi);
4348 sky2_power_aux(hw);
4349
4350 pci_save_state(pdev);
4351 pci_enable_wake(pdev, pci_choose_state(pdev, state), wol);
4352 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4353
4354 return 0;
4355 }
4356
4357 static int sky2_resume(struct pci_dev *pdev)
4358 {
4359 struct sky2_hw *hw = pci_get_drvdata(pdev);
4360 int i, err;
4361
4362 if (!hw)
4363 return 0;
4364
4365 err = pci_set_power_state(pdev, PCI_D0);
4366 if (err)
4367 goto out;
4368
4369 err = pci_restore_state(pdev);
4370 if (err)
4371 goto out;
4372
4373 pci_enable_wake(pdev, PCI_D0, 0);
4374
4375 /* Re-enable all clocks */
4376 if (hw->chip_id == CHIP_ID_YUKON_EX ||
4377 hw->chip_id == CHIP_ID_YUKON_EC_U ||
4378 hw->chip_id == CHIP_ID_YUKON_FE_P)
4379 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
4380
4381 sky2_reset(hw);
4382 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4383 napi_enable(&hw->napi);
4384
4385 for (i = 0; i < hw->ports; i++) {
4386 struct net_device *dev = hw->dev[i];
4387 if (netif_running(dev)) {
4388 err = sky2_up(dev);
4389 if (err) {
4390 printk(KERN_ERR PFX "%s: could not up: %d\n",
4391 dev->name, err);
4392 dev_close(dev);
4393 goto out;
4394 }
4395 }
4396 }
4397
4398 return 0;
4399 out:
4400 dev_err(&pdev->dev, "resume failed (%d)\n", err);
4401 pci_disable_device(pdev);
4402 return err;
4403 }
4404 #endif
4405
4406 static void sky2_shutdown(struct pci_dev *pdev)
4407 {
4408 struct sky2_hw *hw = pci_get_drvdata(pdev);
4409 int i, wol = 0;
4410
4411 if (!hw)
4412 return;
4413
4414 del_timer_sync(&hw->watchdog_timer);
4415
4416 for (i = 0; i < hw->ports; i++) {
4417 struct net_device *dev = hw->dev[i];
4418 struct sky2_port *sky2 = netdev_priv(dev);
4419
4420 if (sky2->wol) {
4421 wol = 1;
4422 sky2_wol_init(sky2);
4423 }
4424 }
4425
4426 if (wol)
4427 sky2_power_aux(hw);
4428
4429 pci_enable_wake(pdev, PCI_D3hot, wol);
4430 pci_enable_wake(pdev, PCI_D3cold, wol);
4431
4432 pci_disable_device(pdev);
4433 pci_set_power_state(pdev, PCI_D3hot);
4434
4435 }
4436
4437 static struct pci_driver sky2_driver = {
4438 .name = DRV_NAME,
4439 .id_table = sky2_id_table,
4440 .probe = sky2_probe,
4441 .remove = __devexit_p(sky2_remove),
4442 #ifdef CONFIG_PM
4443 .suspend = sky2_suspend,
4444 .resume = sky2_resume,
4445 #endif
4446 .shutdown = sky2_shutdown,
4447 };
4448
4449 static int __init sky2_init_module(void)
4450 {
4451 sky2_debug_init();
4452 return pci_register_driver(&sky2_driver);
4453 }
4454
4455 static void __exit sky2_cleanup_module(void)
4456 {
4457 pci_unregister_driver(&sky2_driver);
4458 sky2_debug_cleanup();
4459 }
4460
4461 module_init(sky2_init_module);
4462 module_exit(sky2_cleanup_module);
4463
4464 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
4465 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
4466 MODULE_LICENSE("GPL");
4467 MODULE_VERSION(DRV_VERSION);
WRT350N Kernel Patches