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ixgbe: Fix netpoll to be properly multiqueue aware
[linux-2.6/x86.git] / drivers / net / sky2.c
blob3550c5dcd93c599ed2e91f4424821c87523c76fb
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/module.h>
28 #include <linux/netdevice.h>
29 #include <linux/dma-mapping.h>
30 #include <linux/etherdevice.h>
31 #include <linux/ethtool.h>
32 #include <linux/pci.h>
33 #include <linux/ip.h>
34 #include <net/ip.h>
35 #include <linux/tcp.h>
36 #include <linux/in.h>
37 #include <linux/delay.h>
38 #include <linux/workqueue.h>
39 #include <linux/if_vlan.h>
40 #include <linux/prefetch.h>
41 #include <linux/debugfs.h>
42 #include <linux/mii.h>
43
44 #include <asm/irq.h>
45
46 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
47 #define SKY2_VLAN_TAG_USED 1
48 #endif
49
50 #include "sky2.h"
51
52 #define DRV_NAME "sky2"
53 #define DRV_VERSION "1.23"
54 #define PFX DRV_NAME " "
55
56 /*
57 * The Yukon II chipset takes 64 bit command blocks (called list elements)
58 * that are organized into three (receive, transmit, status) different rings
59 * similar to Tigon3.
60 */
61
62 #define RX_LE_SIZE 1024
63 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
64 #define RX_MAX_PENDING (RX_LE_SIZE/6 - 2)
65 #define RX_DEF_PENDING RX_MAX_PENDING
66
67 #define TX_RING_SIZE 512
68 #define TX_DEF_PENDING 128
69 #define MAX_SKB_TX_LE (4 + (sizeof(dma_addr_t)/sizeof(u32))*MAX_SKB_FRAGS)
70 #define TX_MIN_PENDING (MAX_SKB_TX_LE+1)
71
72 #define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
73 #define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
74 #define TX_WATCHDOG (5 * HZ)
75 #define NAPI_WEIGHT 64
76 #define PHY_RETRIES 1000
77
78 #define SKY2_EEPROM_MAGIC 0x9955aabb
79
80
81 #define RING_NEXT(x,s) (((x)+1) & ((s)-1))
82
83 static const u32 default_msg =
84 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
85 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
86 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
87
88 static int debug = -1; /* defaults above */
89 module_param(debug, int, 0);
90 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
91
92 static int copybreak __read_mostly = 128;
93 module_param(copybreak, int, 0);
94 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
95
96 static int disable_msi = 0;
97 module_param(disable_msi, int, 0);
98 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
99
100 static DEFINE_PCI_DEVICE_TABLE(sky2_id_table) = {
101 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
102 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
103 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
104 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
105 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
106 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B03) }, /* DGE-550T */
107 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
108 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
109 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4354) }, /* 88E8040 */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4355) }, /* 88E8040T */
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 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4380) }, /* 88E8057 */
140 { 0 }
141 };
142
143 MODULE_DEVICE_TABLE(pci, sky2_id_table);
144
145 /* Avoid conditionals by using array */
146 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
147 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
148 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
149
150 static void sky2_set_multicast(struct net_device *dev);
151
152 /* Access to PHY via serial interconnect */
153 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
154 {
155 int i;
156
157 gma_write16(hw, port, GM_SMI_DATA, val);
158 gma_write16(hw, port, GM_SMI_CTRL,
159 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
160
161 for (i = 0; i < PHY_RETRIES; i++) {
162 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
163 if (ctrl == 0xffff)
164 goto io_error;
165
166 if (!(ctrl & GM_SMI_CT_BUSY))
167 return 0;
168
169 udelay(10);
170 }
171
172 dev_warn(&hw->pdev->dev,"%s: phy write timeout\n", hw->dev[port]->name);
173 return -ETIMEDOUT;
174
175 io_error:
176 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
177 return -EIO;
178 }
179
180 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
181 {
182 int i;
183
184 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
185 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
186
187 for (i = 0; i < PHY_RETRIES; i++) {
188 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
189 if (ctrl == 0xffff)
190 goto io_error;
191
192 if (ctrl & GM_SMI_CT_RD_VAL) {
193 *val = gma_read16(hw, port, GM_SMI_DATA);
194 return 0;
195 }
196
197 udelay(10);
198 }
199
200 dev_warn(&hw->pdev->dev, "%s: phy read timeout\n", hw->dev[port]->name);
201 return -ETIMEDOUT;
202 io_error:
203 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
204 return -EIO;
205 }
206
207 static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
208 {
209 u16 v;
210 __gm_phy_read(hw, port, reg, &v);
211 return v;
212 }
213
214
215 static void sky2_power_on(struct sky2_hw *hw)
216 {
217 /* switch power to VCC (WA for VAUX problem) */
218 sky2_write8(hw, B0_POWER_CTRL,
219 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
220
221 /* disable Core Clock Division, */
222 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
223
224 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
225 /* enable bits are inverted */
226 sky2_write8(hw, B2_Y2_CLK_GATE,
227 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
228 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
229 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
230 else
231 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
232
233 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
234 u32 reg;
235
236 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
237
238 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
239 /* set all bits to 0 except bits 15..12 and 8 */
240 reg &= P_ASPM_CONTROL_MSK;
241 sky2_pci_write32(hw, PCI_DEV_REG4, reg);
242
243 reg = sky2_pci_read32(hw, PCI_DEV_REG5);
244 /* set all bits to 0 except bits 28 & 27 */
245 reg &= P_CTL_TIM_VMAIN_AV_MSK;
246 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
247
248 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
249
250 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
251 reg = sky2_read32(hw, B2_GP_IO);
252 reg |= GLB_GPIO_STAT_RACE_DIS;
253 sky2_write32(hw, B2_GP_IO, reg);
254
255 sky2_read32(hw, B2_GP_IO);
256 }
257 }
258
259 static void sky2_power_aux(struct sky2_hw *hw)
260 {
261 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
262 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
263 else
264 /* enable bits are inverted */
265 sky2_write8(hw, B2_Y2_CLK_GATE,
266 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
267 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
268 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
269
270 /* switch power to VAUX */
271 if (sky2_read16(hw, B0_CTST) & Y2_VAUX_AVAIL)
272 sky2_write8(hw, B0_POWER_CTRL,
273 (PC_VAUX_ENA | PC_VCC_ENA |
274 PC_VAUX_ON | PC_VCC_OFF));
275 }
276
277 static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
278 {
279 u16 reg;
280
281 /* disable all GMAC IRQ's */
282 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
283
284 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
285 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
286 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
287 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
288
289 reg = gma_read16(hw, port, GM_RX_CTRL);
290 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
291 gma_write16(hw, port, GM_RX_CTRL, reg);
292 }
293
294 /* flow control to advertise bits */
295 static const u16 copper_fc_adv[] = {
296 [FC_NONE] = 0,
297 [FC_TX] = PHY_M_AN_ASP,
298 [FC_RX] = PHY_M_AN_PC,
299 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
300 };
301
302 /* flow control to advertise bits when using 1000BaseX */
303 static const u16 fiber_fc_adv[] = {
304 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
305 [FC_TX] = PHY_M_P_ASYM_MD_X,
306 [FC_RX] = PHY_M_P_SYM_MD_X,
307 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
308 };
309
310 /* flow control to GMA disable bits */
311 static const u16 gm_fc_disable[] = {
312 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
313 [FC_TX] = GM_GPCR_FC_RX_DIS,
314 [FC_RX] = GM_GPCR_FC_TX_DIS,
315 [FC_BOTH] = 0,
316 };
317
318
319 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
320 {
321 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
322 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
323
324 if (sky2->autoneg == AUTONEG_ENABLE &&
325 !(hw->flags & SKY2_HW_NEWER_PHY)) {
326 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
327
328 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
329 PHY_M_EC_MAC_S_MSK);
330 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
331
332 /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
333 if (hw->chip_id == CHIP_ID_YUKON_EC)
334 /* set downshift counter to 3x and enable downshift */
335 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
336 else
337 /* set master & slave downshift counter to 1x */
338 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
339
340 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
341 }
342
343 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
344 if (sky2_is_copper(hw)) {
345 if (!(hw->flags & SKY2_HW_GIGABIT)) {
346 /* enable automatic crossover */
347 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
348
349 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
350 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
351 u16 spec;
352
353 /* Enable Class A driver for FE+ A0 */
354 spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2);
355 spec |= PHY_M_FESC_SEL_CL_A;
356 gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec);
357 }
358 } else {
359 /* disable energy detect */
360 ctrl &= ~PHY_M_PC_EN_DET_MSK;
361
362 /* enable automatic crossover */
363 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
364
365 /* downshift on PHY 88E1112 and 88E1149 is changed */
366 if (sky2->autoneg == AUTONEG_ENABLE
367 && (hw->flags & SKY2_HW_NEWER_PHY)) {
368 /* set downshift counter to 3x and enable downshift */
369 ctrl &= ~PHY_M_PC_DSC_MSK;
370 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
371 }
372 }
373 } else {
374 /* workaround for deviation #4.88 (CRC errors) */
375 /* disable Automatic Crossover */
376
377 ctrl &= ~PHY_M_PC_MDIX_MSK;
378 }
379
380 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
381
382 /* special setup for PHY 88E1112 Fiber */
383 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
384 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
385
386 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
387 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
388 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
389 ctrl &= ~PHY_M_MAC_MD_MSK;
390 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
391 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
392
393 if (hw->pmd_type == 'P') {
394 /* select page 1 to access Fiber registers */
395 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
396
397 /* for SFP-module set SIGDET polarity to low */
398 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
399 ctrl |= PHY_M_FIB_SIGD_POL;
400 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
401 }
402
403 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
404 }
405
406 ctrl = PHY_CT_RESET;
407 ct1000 = 0;
408 adv = PHY_AN_CSMA;
409 reg = 0;
410
411 if (sky2->autoneg == AUTONEG_ENABLE) {
412 if (sky2_is_copper(hw)) {
413 if (sky2->advertising & ADVERTISED_1000baseT_Full)
414 ct1000 |= PHY_M_1000C_AFD;
415 if (sky2->advertising & ADVERTISED_1000baseT_Half)
416 ct1000 |= PHY_M_1000C_AHD;
417 if (sky2->advertising & ADVERTISED_100baseT_Full)
418 adv |= PHY_M_AN_100_FD;
419 if (sky2->advertising & ADVERTISED_100baseT_Half)
420 adv |= PHY_M_AN_100_HD;
421 if (sky2->advertising & ADVERTISED_10baseT_Full)
422 adv |= PHY_M_AN_10_FD;
423 if (sky2->advertising & ADVERTISED_10baseT_Half)
424 adv |= PHY_M_AN_10_HD;
425
426 adv |= copper_fc_adv[sky2->flow_mode];
427 } else { /* special defines for FIBER (88E1040S only) */
428 if (sky2->advertising & ADVERTISED_1000baseT_Full)
429 adv |= PHY_M_AN_1000X_AFD;
430 if (sky2->advertising & ADVERTISED_1000baseT_Half)
431 adv |= PHY_M_AN_1000X_AHD;
432
433 adv |= fiber_fc_adv[sky2->flow_mode];
434 }
435
436 /* Restart Auto-negotiation */
437 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
438 } else {
439 /* forced speed/duplex settings */
440 ct1000 = PHY_M_1000C_MSE;
441
442 /* Disable auto update for duplex flow control and speed */
443 reg |= GM_GPCR_AU_ALL_DIS;
444
445 switch (sky2->speed) {
446 case SPEED_1000:
447 ctrl |= PHY_CT_SP1000;
448 reg |= GM_GPCR_SPEED_1000;
449 break;
450 case SPEED_100:
451 ctrl |= PHY_CT_SP100;
452 reg |= GM_GPCR_SPEED_100;
453 break;
454 }
455
456 if (sky2->duplex == DUPLEX_FULL) {
457 reg |= GM_GPCR_DUP_FULL;
458 ctrl |= PHY_CT_DUP_MD;
459 } else if (sky2->speed < SPEED_1000)
460 sky2->flow_mode = FC_NONE;
461
462
463 reg |= gm_fc_disable[sky2->flow_mode];
464
465 /* Forward pause packets to GMAC? */
466 if (sky2->flow_mode & FC_RX)
467 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
468 else
469 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
470 }
471
472 gma_write16(hw, port, GM_GP_CTRL, reg);
473
474 if (hw->flags & SKY2_HW_GIGABIT)
475 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
476
477 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
478 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
479
480 /* Setup Phy LED's */
481 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
482 ledover = 0;
483
484 switch (hw->chip_id) {
485 case CHIP_ID_YUKON_FE:
486 /* on 88E3082 these bits are at 11..9 (shifted left) */
487 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
488
489 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
490
491 /* delete ACT LED control bits */
492 ctrl &= ~PHY_M_FELP_LED1_MSK;
493 /* change ACT LED control to blink mode */
494 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
495 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
496 break;
497
498 case CHIP_ID_YUKON_FE_P:
499 /* Enable Link Partner Next Page */
500 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
501 ctrl |= PHY_M_PC_ENA_LIP_NP;
502
503 /* disable Energy Detect and enable scrambler */
504 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
505 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
506
507 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
508 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
509 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
510 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
511
512 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
513 break;
514
515 case CHIP_ID_YUKON_XL:
516 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
517
518 /* select page 3 to access LED control register */
519 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
520
521 /* set LED Function Control register */
522 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
523 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
524 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
525 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
526 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
527
528 /* set Polarity Control register */
529 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
530 (PHY_M_POLC_LS1_P_MIX(4) |
531 PHY_M_POLC_IS0_P_MIX(4) |
532 PHY_M_POLC_LOS_CTRL(2) |
533 PHY_M_POLC_INIT_CTRL(2) |
534 PHY_M_POLC_STA1_CTRL(2) |
535 PHY_M_POLC_STA0_CTRL(2)));
536
537 /* restore page register */
538 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
539 break;
540
541 case CHIP_ID_YUKON_EC_U:
542 case CHIP_ID_YUKON_EX:
543 case CHIP_ID_YUKON_SUPR:
544 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
545
546 /* select page 3 to access LED control register */
547 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
548
549 /* set LED Function Control register */
550 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
551 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
552 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
553 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
554 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
555
556 /* set Blink Rate in LED Timer Control Register */
557 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
558 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
559 /* restore page register */
560 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
561 break;
562
563 default:
564 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
565 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
566
567 /* turn off the Rx LED (LED_RX) */
568 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
569 }
570
571 if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_UL_2) {
572 /* apply fixes in PHY AFE */
573 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
574
575 /* increase differential signal amplitude in 10BASE-T */
576 gm_phy_write(hw, port, 0x18, 0xaa99);
577 gm_phy_write(hw, port, 0x17, 0x2011);
578
579 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
580 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
581 gm_phy_write(hw, port, 0x18, 0xa204);
582 gm_phy_write(hw, port, 0x17, 0x2002);
583 }
584
585 /* set page register to 0 */
586 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
587 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
588 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
589 /* apply workaround for integrated resistors calibration */
590 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
591 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
592 } else if (hw->chip_id != CHIP_ID_YUKON_EX &&
593 hw->chip_id < CHIP_ID_YUKON_SUPR) {
594 /* no effect on Yukon-XL */
595 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
596
597 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
598 /* turn on 100 Mbps LED (LED_LINK100) */
599 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
600 }
601
602 if (ledover)
603 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
604
605 }
606
607 /* Enable phy interrupt on auto-negotiation complete (or link up) */
608 if (sky2->autoneg == AUTONEG_ENABLE)
609 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
610 else
611 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
612 }
613
614 static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
615 static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
616
617 static void sky2_phy_power_up(struct sky2_hw *hw, unsigned port)
618 {
619 u32 reg1;
620
621 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
622 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
623 reg1 &= ~phy_power[port];
624
625 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
626 reg1 |= coma_mode[port];
627
628 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
629 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
630 sky2_pci_read32(hw, PCI_DEV_REG1);
631
632 if (hw->chip_id == CHIP_ID_YUKON_FE)
633 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_ANE);
634 else if (hw->flags & SKY2_HW_ADV_POWER_CTL)
635 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
636 }
637
638 static void sky2_phy_power_down(struct sky2_hw *hw, unsigned port)
639 {
640 u32 reg1;
641 u16 ctrl;
642
643 /* release GPHY Control reset */
644 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
645
646 /* release GMAC reset */
647 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
648
649 if (hw->flags & SKY2_HW_NEWER_PHY) {
650 /* select page 2 to access MAC control register */
651 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
652
653 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
654 /* allow GMII Power Down */
655 ctrl &= ~PHY_M_MAC_GMIF_PUP;
656 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
657
658 /* set page register back to 0 */
659 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
660 }
661
662 /* setup General Purpose Control Register */
663 gma_write16(hw, port, GM_GP_CTRL,
664 GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 | GM_GPCR_AU_ALL_DIS);
665
666 if (hw->chip_id != CHIP_ID_YUKON_EC) {
667 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
668 /* select page 2 to access MAC control register */
669 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
670
671 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
672 /* enable Power Down */
673 ctrl |= PHY_M_PC_POW_D_ENA;
674 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
675
676 /* set page register back to 0 */
677 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
678 }
679
680 /* set IEEE compatible Power Down Mode (dev. #4.99) */
681 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_PDOWN);
682 }
683
684 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
685 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
686 reg1 |= phy_power[port]; /* set PHY to PowerDown/COMA Mode */
687 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
688 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
689 }
690
691 /* Force a renegotiation */
692 static void sky2_phy_reinit(struct sky2_port *sky2)
693 {
694 spin_lock_bh(&sky2->phy_lock);
695 sky2_phy_init(sky2->hw, sky2->port);
696 spin_unlock_bh(&sky2->phy_lock);
697 }
698
699 /* Put device in state to listen for Wake On Lan */
700 static void sky2_wol_init(struct sky2_port *sky2)
701 {
702 struct sky2_hw *hw = sky2->hw;
703 unsigned port = sky2->port;
704 enum flow_control save_mode;
705 u16 ctrl;
706 u32 reg1;
707
708 /* Bring hardware out of reset */
709 sky2_write16(hw, B0_CTST, CS_RST_CLR);
710 sky2_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
711
712 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
713 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
714
715 /* Force to 10/100
716 * sky2_reset will re-enable on resume
717 */
718 save_mode = sky2->flow_mode;
719 ctrl = sky2->advertising;
720
721 sky2->advertising &= ~(ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full);
722 sky2->flow_mode = FC_NONE;
723
724 spin_lock_bh(&sky2->phy_lock);
725 sky2_phy_power_up(hw, port);
726 sky2_phy_init(hw, port);
727 spin_unlock_bh(&sky2->phy_lock);
728
729 sky2->flow_mode = save_mode;
730 sky2->advertising = ctrl;
731
732 /* Set GMAC to no flow control and auto update for speed/duplex */
733 gma_write16(hw, port, GM_GP_CTRL,
734 GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
735 GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
736
737 /* Set WOL address */
738 memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
739 sky2->netdev->dev_addr, ETH_ALEN);
740
741 /* Turn on appropriate WOL control bits */
742 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
743 ctrl = 0;
744 if (sky2->wol & WAKE_PHY)
745 ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
746 else
747 ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
748
749 if (sky2->wol & WAKE_MAGIC)
750 ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
751 else
752 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;;
753
754 ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
755 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
756
757 /* Turn on legacy PCI-Express PME mode */
758 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
759 reg1 |= PCI_Y2_PME_LEGACY;
760 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
761
762 /* block receiver */
763 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
764
765 }
766
767 static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
768 {
769 struct net_device *dev = hw->dev[port];
770
771 if ( (hw->chip_id == CHIP_ID_YUKON_EX &&
772 hw->chip_rev != CHIP_REV_YU_EX_A0) ||
773 hw->chip_id == CHIP_ID_YUKON_FE_P ||
774 hw->chip_id == CHIP_ID_YUKON_SUPR) {
775 /* Yukon-Extreme B0 and further Extreme devices */
776 /* enable Store & Forward mode for TX */
777
778 if (dev->mtu <= ETH_DATA_LEN)
779 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
780 TX_JUMBO_DIS | TX_STFW_ENA);
781
782 else
783 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
784 TX_JUMBO_ENA| TX_STFW_ENA);
785 } else {
786 if (dev->mtu <= ETH_DATA_LEN)
787 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
788 else {
789 /* set Tx GMAC FIFO Almost Empty Threshold */
790 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
791 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
792
793 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
794
795 /* Can't do offload because of lack of store/forward */
796 dev->features &= ~(NETIF_F_TSO | NETIF_F_SG | NETIF_F_ALL_CSUM);
797 }
798 }
799 }
800
801 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
802 {
803 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
804 u16 reg;
805 u32 rx_reg;
806 int i;
807 const u8 *addr = hw->dev[port]->dev_addr;
808
809 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
810 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
811
812 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
813
814 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
815 /* WA DEV_472 -- looks like crossed wires on port 2 */
816 /* clear GMAC 1 Control reset */
817 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
818 do {
819 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
820 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
821 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
822 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
823 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
824 }
825
826 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
827
828 /* Enable Transmit FIFO Underrun */
829 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
830
831 spin_lock_bh(&sky2->phy_lock);
832 sky2_phy_power_up(hw, port);
833 sky2_phy_init(hw, port);
834 spin_unlock_bh(&sky2->phy_lock);
835
836 /* MIB clear */
837 reg = gma_read16(hw, port, GM_PHY_ADDR);
838 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
839
840 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
841 gma_read16(hw, port, i);
842 gma_write16(hw, port, GM_PHY_ADDR, reg);
843
844 /* transmit control */
845 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
846
847 /* receive control reg: unicast + multicast + no FCS */
848 gma_write16(hw, port, GM_RX_CTRL,
849 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
850
851 /* transmit flow control */
852 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
853
854 /* transmit parameter */
855 gma_write16(hw, port, GM_TX_PARAM,
856 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
857 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
858 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
859 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
860
861 /* serial mode register */
862 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
863 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
864
865 if (hw->dev[port]->mtu > ETH_DATA_LEN)
866 reg |= GM_SMOD_JUMBO_ENA;
867
868 gma_write16(hw, port, GM_SERIAL_MODE, reg);
869
870 /* virtual address for data */
871 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
872
873 /* physical address: used for pause frames */
874 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
875
876 /* ignore counter overflows */
877 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
878 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
879 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
880
881 /* Configure Rx MAC FIFO */
882 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
883 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
884 if (hw->chip_id == CHIP_ID_YUKON_EX ||
885 hw->chip_id == CHIP_ID_YUKON_FE_P)
886 rx_reg |= GMF_RX_OVER_ON;
887
888 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
889
890 if (hw->chip_id == CHIP_ID_YUKON_XL) {
891 /* Hardware errata - clear flush mask */
892 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0);
893 } else {
894 /* Flush Rx MAC FIFO on any flow control or error */
895 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
896 }
897
898 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
899 reg = RX_GMF_FL_THR_DEF + 1;
900 /* Another magic mystery workaround from sk98lin */
901 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
902 hw->chip_rev == CHIP_REV_YU_FE2_A0)
903 reg = 0x178;
904 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
905
906 /* Configure Tx MAC FIFO */
907 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
908 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
909
910 /* On chips without ram buffer, pause is controled by MAC level */
911 if (!(hw->flags & SKY2_HW_RAM_BUFFER)) {
912 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
913 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
914
915 sky2_set_tx_stfwd(hw, port);
916 }
917
918 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
919 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
920 /* disable dynamic watermark */
921 reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA));
922 reg &= ~TX_DYN_WM_ENA;
923 sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg);
924 }
925 }
926
927 /* Assign Ram Buffer allocation to queue */
928 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
929 {
930 u32 end;
931
932 /* convert from K bytes to qwords used for hw register */
933 start *= 1024/8;
934 space *= 1024/8;
935 end = start + space - 1;
936
937 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
938 sky2_write32(hw, RB_ADDR(q, RB_START), start);
939 sky2_write32(hw, RB_ADDR(q, RB_END), end);
940 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
941 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
942
943 if (q == Q_R1 || q == Q_R2) {
944 u32 tp = space - space/4;
945
946 /* On receive queue's set the thresholds
947 * give receiver priority when > 3/4 full
948 * send pause when down to 2K
949 */
950 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
951 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
952
953 tp = space - 2048/8;
954 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
955 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
956 } else {
957 /* Enable store & forward on Tx queue's because
958 * Tx FIFO is only 1K on Yukon
959 */
960 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
961 }
962
963 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
964 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
965 }
966
967 /* Setup Bus Memory Interface */
968 static void sky2_qset(struct sky2_hw *hw, u16 q)
969 {
970 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
971 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
972 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
973 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
974 }
975
976 /* Setup prefetch unit registers. This is the interface between
977 * hardware and driver list elements
978 */
979 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
980 u64 addr, u32 last)
981 {
982 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
983 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
984 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
985 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
986 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
987 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
988
989 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
990 }
991
992 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
993 {
994 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
995
996 sky2->tx_prod = RING_NEXT(sky2->tx_prod, TX_RING_SIZE);
997 le->ctrl = 0;
998 return le;
999 }
1000
1001 static void tx_init(struct sky2_port *sky2)
1002 {
1003 struct sky2_tx_le *le;
1004
1005 sky2->tx_prod = sky2->tx_cons = 0;
1006 sky2->tx_tcpsum = 0;
1007 sky2->tx_last_mss = 0;
1008
1009 le = get_tx_le(sky2);
1010 le->addr = 0;
1011 le->opcode = OP_ADDR64 | HW_OWNER;
1012 }
1013
1014 static inline struct tx_ring_info *tx_le_re(struct sky2_port *sky2,
1015 struct sky2_tx_le *le)
1016 {
1017 return sky2->tx_ring + (le - sky2->tx_le);
1018 }
1019
1020 /* Update chip's next pointer */
1021 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
1022 {
1023 /* Make sure write' to descriptors are complete before we tell hardware */
1024 wmb();
1025 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
1026
1027 /* Synchronize I/O on since next processor may write to tail */
1028 mmiowb();
1029 }
1030
1031
1032 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
1033 {
1034 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
1035 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
1036 le->ctrl = 0;
1037 return le;
1038 }
1039
1040 /* Build description to hardware for one receive segment */
1041 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
1042 dma_addr_t map, unsigned len)
1043 {
1044 struct sky2_rx_le *le;
1045
1046 if (sizeof(dma_addr_t) > sizeof(u32)) {
1047 le = sky2_next_rx(sky2);
1048 le->addr = cpu_to_le32(upper_32_bits(map));
1049 le->opcode = OP_ADDR64 | HW_OWNER;
1050 }
1051
1052 le = sky2_next_rx(sky2);
1053 le->addr = cpu_to_le32((u32) map);
1054 le->length = cpu_to_le16(len);
1055 le->opcode = op | HW_OWNER;
1056 }
1057
1058 /* Build description to hardware for one possibly fragmented skb */
1059 static void sky2_rx_submit(struct sky2_port *sky2,
1060 const struct rx_ring_info *re)
1061 {
1062 int i;
1063
1064 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
1065
1066 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
1067 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
1068 }
1069
1070
1071 static int sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
1072 unsigned size)
1073 {
1074 struct sk_buff *skb = re->skb;
1075 int i;
1076
1077 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
1078 if (unlikely(pci_dma_mapping_error(pdev, re->data_addr)))
1079 return -EIO;
1080
1081 pci_unmap_len_set(re, data_size, size);
1082
1083 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1084 re->frag_addr[i] = pci_map_page(pdev,
1085 skb_shinfo(skb)->frags[i].page,
1086 skb_shinfo(skb)->frags[i].page_offset,
1087 skb_shinfo(skb)->frags[i].size,
1088 PCI_DMA_FROMDEVICE);
1089 return 0;
1090 }
1091
1092 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1093 {
1094 struct sk_buff *skb = re->skb;
1095 int i;
1096
1097 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
1098 PCI_DMA_FROMDEVICE);
1099
1100 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1101 pci_unmap_page(pdev, re->frag_addr[i],
1102 skb_shinfo(skb)->frags[i].size,
1103 PCI_DMA_FROMDEVICE);
1104 }
1105
1106 /* Tell chip where to start receive checksum.
1107 * Actually has two checksums, but set both same to avoid possible byte
1108 * order problems.
1109 */
1110 static void rx_set_checksum(struct sky2_port *sky2)
1111 {
1112 struct sky2_rx_le *le = sky2_next_rx(sky2);
1113
1114 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1115 le->ctrl = 0;
1116 le->opcode = OP_TCPSTART | HW_OWNER;
1117
1118 sky2_write32(sky2->hw,
1119 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1120 sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
1121 }
1122
1123 /*
1124 * The RX Stop command will not work for Yukon-2 if the BMU does not
1125 * reach the end of packet and since we can't make sure that we have
1126 * incoming data, we must reset the BMU while it is not doing a DMA
1127 * transfer. Since it is possible that the RX path is still active,
1128 * the RX RAM buffer will be stopped first, so any possible incoming
1129 * data will not trigger a DMA. After the RAM buffer is stopped, the
1130 * BMU is polled until any DMA in progress is ended and only then it
1131 * will be reset.
1132 */
1133 static void sky2_rx_stop(struct sky2_port *sky2)
1134 {
1135 struct sky2_hw *hw = sky2->hw;
1136 unsigned rxq = rxqaddr[sky2->port];
1137 int i;
1138
1139 /* disable the RAM Buffer receive queue */
1140 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1141
1142 for (i = 0; i < 0xffff; i++)
1143 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1144 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1145 goto stopped;
1146
1147 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
1148 sky2->netdev->name);
1149 stopped:
1150 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1151
1152 /* reset the Rx prefetch unit */
1153 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1154 mmiowb();
1155 }
1156
1157 /* Clean out receive buffer area, assumes receiver hardware stopped */
1158 static void sky2_rx_clean(struct sky2_port *sky2)
1159 {
1160 unsigned i;
1161
1162 memset(sky2->rx_le, 0, RX_LE_BYTES);
1163 for (i = 0; i < sky2->rx_pending; i++) {
1164 struct rx_ring_info *re = sky2->rx_ring + i;
1165
1166 if (re->skb) {
1167 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1168 kfree_skb(re->skb);
1169 re->skb = NULL;
1170 }
1171 }
1172 skb_queue_purge(&sky2->rx_recycle);
1173 }
1174
1175 /* Basic MII support */
1176 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1177 {
1178 struct mii_ioctl_data *data = if_mii(ifr);
1179 struct sky2_port *sky2 = netdev_priv(dev);
1180 struct sky2_hw *hw = sky2->hw;
1181 int err = -EOPNOTSUPP;
1182
1183 if (!netif_running(dev))
1184 return -ENODEV; /* Phy still in reset */
1185
1186 switch (cmd) {
1187 case SIOCGMIIPHY:
1188 data->phy_id = PHY_ADDR_MARV;
1189
1190 /* fallthru */
1191 case SIOCGMIIREG: {
1192 u16 val = 0;
1193
1194 spin_lock_bh(&sky2->phy_lock);
1195 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1196 spin_unlock_bh(&sky2->phy_lock);
1197
1198 data->val_out = val;
1199 break;
1200 }
1201
1202 case SIOCSMIIREG:
1203 if (!capable(CAP_NET_ADMIN))
1204 return -EPERM;
1205
1206 spin_lock_bh(&sky2->phy_lock);
1207 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1208 data->val_in);
1209 spin_unlock_bh(&sky2->phy_lock);
1210 break;
1211 }
1212 return err;
1213 }
1214
1215 #ifdef SKY2_VLAN_TAG_USED
1216 static void sky2_set_vlan_mode(struct sky2_hw *hw, u16 port, bool onoff)
1217 {
1218 if (onoff) {
1219 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1220 RX_VLAN_STRIP_ON);
1221 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1222 TX_VLAN_TAG_ON);
1223 } else {
1224 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1225 RX_VLAN_STRIP_OFF);
1226 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1227 TX_VLAN_TAG_OFF);
1228 }
1229 }
1230
1231 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
1232 {
1233 struct sky2_port *sky2 = netdev_priv(dev);
1234 struct sky2_hw *hw = sky2->hw;
1235 u16 port = sky2->port;
1236
1237 netif_tx_lock_bh(dev);
1238 napi_disable(&hw->napi);
1239
1240 sky2->vlgrp = grp;
1241 sky2_set_vlan_mode(hw, port, grp != NULL);
1242
1243 sky2_read32(hw, B0_Y2_SP_LISR);
1244 napi_enable(&hw->napi);
1245 netif_tx_unlock_bh(dev);
1246 }
1247 #endif
1248
1249 /* Amount of required worst case padding in rx buffer */
1250 static inline unsigned sky2_rx_pad(const struct sky2_hw *hw)
1251 {
1252 return (hw->flags & SKY2_HW_RAM_BUFFER) ? 8 : 2;
1253 }
1254
1255 /*
1256 * Allocate an skb for receiving. If the MTU is large enough
1257 * make the skb non-linear with a fragment list of pages.
1258 */
1259 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2)
1260 {
1261 struct sk_buff *skb;
1262 int i;
1263
1264 skb = __skb_dequeue(&sky2->rx_recycle);
1265 if (!skb)
1266 skb = netdev_alloc_skb(sky2->netdev, sky2->rx_data_size
1267 + sky2_rx_pad(sky2->hw));
1268 if (!skb)
1269 goto nomem;
1270
1271 if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) {
1272 unsigned char *start;
1273 /*
1274 * Workaround for a bug in FIFO that cause hang
1275 * if the FIFO if the receive buffer is not 64 byte aligned.
1276 * The buffer returned from netdev_alloc_skb is
1277 * aligned except if slab debugging is enabled.
1278 */
1279 start = PTR_ALIGN(skb->data, 8);
1280 skb_reserve(skb, start - skb->data);
1281 } else
1282 skb_reserve(skb, NET_IP_ALIGN);
1283
1284 for (i = 0; i < sky2->rx_nfrags; i++) {
1285 struct page *page = alloc_page(GFP_ATOMIC);
1286
1287 if (!page)
1288 goto free_partial;
1289 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1290 }
1291
1292 return skb;
1293 free_partial:
1294 kfree_skb(skb);
1295 nomem:
1296 return NULL;
1297 }
1298
1299 static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1300 {
1301 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1302 }
1303
1304 /*
1305 * Allocate and setup receiver buffer pool.
1306 * Normal case this ends up creating one list element for skb
1307 * in the receive ring. Worst case if using large MTU and each
1308 * allocation falls on a different 64 bit region, that results
1309 * in 6 list elements per ring entry.
1310 * One element is used for checksum enable/disable, and one
1311 * extra to avoid wrap.
1312 */
1313 static int sky2_rx_start(struct sky2_port *sky2)
1314 {
1315 struct sky2_hw *hw = sky2->hw;
1316 struct rx_ring_info *re;
1317 unsigned rxq = rxqaddr[sky2->port];
1318 unsigned i, size, thresh;
1319
1320 sky2->rx_put = sky2->rx_next = 0;
1321 sky2_qset(hw, rxq);
1322
1323 /* On PCI express lowering the watermark gives better performance */
1324 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
1325 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1326
1327 /* These chips have no ram buffer?
1328 * MAC Rx RAM Read is controlled by hardware */
1329 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1330 (hw->chip_rev == CHIP_REV_YU_EC_U_A1
1331 || hw->chip_rev == CHIP_REV_YU_EC_U_B0))
1332 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1333
1334 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1335
1336 if (!(hw->flags & SKY2_HW_NEW_LE))
1337 rx_set_checksum(sky2);
1338
1339 /* Space needed for frame data + headers rounded up */
1340 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1341
1342 /* Stopping point for hardware truncation */
1343 thresh = (size - 8) / sizeof(u32);
1344
1345 sky2->rx_nfrags = size >> PAGE_SHIFT;
1346 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1347
1348 /* Compute residue after pages */
1349 size -= sky2->rx_nfrags << PAGE_SHIFT;
1350
1351 /* Optimize to handle small packets and headers */
1352 if (size < copybreak)
1353 size = copybreak;
1354 if (size < ETH_HLEN)
1355 size = ETH_HLEN;
1356
1357 sky2->rx_data_size = size;
1358
1359 skb_queue_head_init(&sky2->rx_recycle);
1360
1361 /* Fill Rx ring */
1362 for (i = 0; i < sky2->rx_pending; i++) {
1363 re = sky2->rx_ring + i;
1364
1365 re->skb = sky2_rx_alloc(sky2);
1366 if (!re->skb)
1367 goto nomem;
1368
1369 if (sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size)) {
1370 dev_kfree_skb(re->skb);
1371 re->skb = NULL;
1372 goto nomem;
1373 }
1374
1375 sky2_rx_submit(sky2, re);
1376 }
1377
1378 /*
1379 * The receiver hangs if it receives frames larger than the
1380 * packet buffer. As a workaround, truncate oversize frames, but
1381 * the register is limited to 9 bits, so if you do frames > 2052
1382 * you better get the MTU right!
1383 */
1384 if (thresh > 0x1ff)
1385 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1386 else {
1387 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1388 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1389 }
1390
1391 /* Tell chip about available buffers */
1392 sky2_rx_update(sky2, rxq);
1393 return 0;
1394 nomem:
1395 sky2_rx_clean(sky2);
1396 return -ENOMEM;
1397 }
1398
1399 /* Bring up network interface. */
1400 static int sky2_up(struct net_device *dev)
1401 {
1402 struct sky2_port *sky2 = netdev_priv(dev);
1403 struct sky2_hw *hw = sky2->hw;
1404 unsigned port = sky2->port;
1405 u32 imask, ramsize;
1406 int cap, err = -ENOMEM;
1407 struct net_device *otherdev = hw->dev[sky2->port^1];
1408
1409 /*
1410 * On dual port PCI-X card, there is an problem where status
1411 * can be received out of order due to split transactions
1412 */
1413 if (otherdev && netif_running(otherdev) &&
1414 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1415 u16 cmd;
1416
1417 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1418 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1419 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1420
1421 }
1422
1423 netif_carrier_off(dev);
1424
1425 /* must be power of 2 */
1426 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1427 TX_RING_SIZE *
1428 sizeof(struct sky2_tx_le),
1429 &sky2->tx_le_map);
1430 if (!sky2->tx_le)
1431 goto err_out;
1432
1433 sky2->tx_ring = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info),
1434 GFP_KERNEL);
1435 if (!sky2->tx_ring)
1436 goto err_out;
1437
1438 tx_init(sky2);
1439
1440 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1441 &sky2->rx_le_map);
1442 if (!sky2->rx_le)
1443 goto err_out;
1444 memset(sky2->rx_le, 0, RX_LE_BYTES);
1445
1446 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1447 GFP_KERNEL);
1448 if (!sky2->rx_ring)
1449 goto err_out;
1450
1451 sky2_mac_init(hw, port);
1452
1453 /* Register is number of 4K blocks on internal RAM buffer. */
1454 ramsize = sky2_read8(hw, B2_E_0) * 4;
1455 if (ramsize > 0) {
1456 u32 rxspace;
1457
1458 hw->flags |= SKY2_HW_RAM_BUFFER;
1459 pr_debug(PFX "%s: ram buffer %dK\n", dev->name, ramsize);
1460 if (ramsize < 16)
1461 rxspace = ramsize / 2;
1462 else
1463 rxspace = 8 + (2*(ramsize - 16))/3;
1464
1465 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1466 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1467
1468 /* Make sure SyncQ is disabled */
1469 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1470 RB_RST_SET);
1471 }
1472
1473 sky2_qset(hw, txqaddr[port]);
1474
1475 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1476 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1477 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1478
1479 /* Set almost empty threshold */
1480 if (hw->chip_id == CHIP_ID_YUKON_EC_U
1481 && hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1482 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1483
1484 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1485 TX_RING_SIZE - 1);
1486
1487 #ifdef SKY2_VLAN_TAG_USED
1488 sky2_set_vlan_mode(hw, port, sky2->vlgrp != NULL);
1489 #endif
1490
1491 err = sky2_rx_start(sky2);
1492 if (err)
1493 goto err_out;
1494
1495 /* Enable interrupts from phy/mac for port */
1496 imask = sky2_read32(hw, B0_IMSK);
1497 imask |= portirq_msk[port];
1498 sky2_write32(hw, B0_IMSK, imask);
1499 sky2_read32(hw, B0_IMSK);
1500
1501 sky2_set_multicast(dev);
1502
1503 if (netif_msg_ifup(sky2))
1504 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
1505 return 0;
1506
1507 err_out:
1508 if (sky2->rx_le) {
1509 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1510 sky2->rx_le, sky2->rx_le_map);
1511 sky2->rx_le = NULL;
1512 }
1513 if (sky2->tx_le) {
1514 pci_free_consistent(hw->pdev,
1515 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1516 sky2->tx_le, sky2->tx_le_map);
1517 sky2->tx_le = NULL;
1518 }
1519 kfree(sky2->tx_ring);
1520 kfree(sky2->rx_ring);
1521
1522 sky2->tx_ring = NULL;
1523 sky2->rx_ring = NULL;
1524 return err;
1525 }
1526
1527 /* Modular subtraction in ring */
1528 static inline int tx_dist(unsigned tail, unsigned head)
1529 {
1530 return (head - tail) & (TX_RING_SIZE - 1);
1531 }
1532
1533 /* Number of list elements available for next tx */
1534 static inline int tx_avail(const struct sky2_port *sky2)
1535 {
1536 return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
1537 }
1538
1539 /* Estimate of number of transmit list elements required */
1540 static unsigned tx_le_req(const struct sk_buff *skb)
1541 {
1542 unsigned count;
1543
1544 count = sizeof(dma_addr_t) / sizeof(u32);
1545 count += skb_shinfo(skb)->nr_frags * count;
1546
1547 if (skb_is_gso(skb))
1548 ++count;
1549
1550 if (skb->ip_summed == CHECKSUM_PARTIAL)
1551 ++count;
1552
1553 return count;
1554 }
1555
1556 /*
1557 * Put one packet in ring for transmit.
1558 * A single packet can generate multiple list elements, and
1559 * the number of ring elements will probably be less than the number
1560 * of list elements used.
1561 */
1562 static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1563 {
1564 struct sky2_port *sky2 = netdev_priv(dev);
1565 struct sky2_hw *hw = sky2->hw;
1566 struct sky2_tx_le *le = NULL;
1567 struct tx_ring_info *re;
1568 unsigned i, len, first_slot;
1569 dma_addr_t mapping;
1570 u16 mss;
1571 u8 ctrl;
1572
1573 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1574 return NETDEV_TX_BUSY;
1575
1576 len = skb_headlen(skb);
1577 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1578
1579 if (pci_dma_mapping_error(hw->pdev, mapping))
1580 goto mapping_error;
1581
1582 first_slot = sky2->tx_prod;
1583 if (unlikely(netif_msg_tx_queued(sky2)))
1584 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1585 dev->name, first_slot, skb->len);
1586
1587 /* Send high bits if needed */
1588 if (sizeof(dma_addr_t) > sizeof(u32)) {
1589 le = get_tx_le(sky2);
1590 le->addr = cpu_to_le32(upper_32_bits(mapping));
1591 le->opcode = OP_ADDR64 | HW_OWNER;
1592 }
1593
1594 /* Check for TCP Segmentation Offload */
1595 mss = skb_shinfo(skb)->gso_size;
1596 if (mss != 0) {
1597
1598 if (!(hw->flags & SKY2_HW_NEW_LE))
1599 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1600
1601 if (mss != sky2->tx_last_mss) {
1602 le = get_tx_le(sky2);
1603 le->addr = cpu_to_le32(mss);
1604
1605 if (hw->flags & SKY2_HW_NEW_LE)
1606 le->opcode = OP_MSS | HW_OWNER;
1607 else
1608 le->opcode = OP_LRGLEN | HW_OWNER;
1609 sky2->tx_last_mss = mss;
1610 }
1611 }
1612
1613 ctrl = 0;
1614 #ifdef SKY2_VLAN_TAG_USED
1615 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1616 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1617 if (!le) {
1618 le = get_tx_le(sky2);
1619 le->addr = 0;
1620 le->opcode = OP_VLAN|HW_OWNER;
1621 } else
1622 le->opcode |= OP_VLAN;
1623 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1624 ctrl |= INS_VLAN;
1625 }
1626 #endif
1627
1628 /* Handle TCP checksum offload */
1629 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1630 /* On Yukon EX (some versions) encoding change. */
1631 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1632 ctrl |= CALSUM; /* auto checksum */
1633 else {
1634 const unsigned offset = skb_transport_offset(skb);
1635 u32 tcpsum;
1636
1637 tcpsum = offset << 16; /* sum start */
1638 tcpsum |= offset + skb->csum_offset; /* sum write */
1639
1640 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1641 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1642 ctrl |= UDPTCP;
1643
1644 if (tcpsum != sky2->tx_tcpsum) {
1645 sky2->tx_tcpsum = tcpsum;
1646
1647 le = get_tx_le(sky2);
1648 le->addr = cpu_to_le32(tcpsum);
1649 le->length = 0; /* initial checksum value */
1650 le->ctrl = 1; /* one packet */
1651 le->opcode = OP_TCPLISW | HW_OWNER;
1652 }
1653 }
1654 }
1655
1656 le = get_tx_le(sky2);
1657 le->addr = cpu_to_le32((u32) mapping);
1658 le->length = cpu_to_le16(len);
1659 le->ctrl = ctrl;
1660 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1661
1662 re = tx_le_re(sky2, le);
1663 re->skb = skb;
1664 pci_unmap_addr_set(re, mapaddr, mapping);
1665 pci_unmap_len_set(re, maplen, len);
1666
1667 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1668 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1669
1670 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1671 frag->size, PCI_DMA_TODEVICE);
1672
1673 if (pci_dma_mapping_error(hw->pdev, mapping))
1674 goto mapping_unwind;
1675
1676 if (sizeof(dma_addr_t) > sizeof(u32)) {
1677 le = get_tx_le(sky2);
1678 le->addr = cpu_to_le32(upper_32_bits(mapping));
1679 le->ctrl = 0;
1680 le->opcode = OP_ADDR64 | HW_OWNER;
1681 }
1682
1683 le = get_tx_le(sky2);
1684 le->addr = cpu_to_le32((u32) mapping);
1685 le->length = cpu_to_le16(frag->size);
1686 le->ctrl = ctrl;
1687 le->opcode = OP_BUFFER | HW_OWNER;
1688
1689 re = tx_le_re(sky2, le);
1690 re->skb = skb;
1691 pci_unmap_addr_set(re, mapaddr, mapping);
1692 pci_unmap_len_set(re, maplen, frag->size);
1693 }
1694
1695 le->ctrl |= EOP;
1696
1697 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1698 netif_stop_queue(dev);
1699
1700 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1701
1702 return NETDEV_TX_OK;
1703
1704 mapping_unwind:
1705 for (i = first_slot; i != sky2->tx_prod; i = RING_NEXT(i, TX_RING_SIZE)) {
1706 le = sky2->tx_le + i;
1707 re = sky2->tx_ring + i;
1708
1709 switch(le->opcode & ~HW_OWNER) {
1710 case OP_LARGESEND:
1711 case OP_PACKET:
1712 pci_unmap_single(hw->pdev,
1713 pci_unmap_addr(re, mapaddr),
1714 pci_unmap_len(re, maplen),
1715 PCI_DMA_TODEVICE);
1716 break;
1717 case OP_BUFFER:
1718 pci_unmap_page(hw->pdev, pci_unmap_addr(re, mapaddr),
1719 pci_unmap_len(re, maplen),
1720 PCI_DMA_TODEVICE);
1721 break;
1722 }
1723 }
1724
1725 sky2->tx_prod = first_slot;
1726 mapping_error:
1727 if (net_ratelimit())
1728 dev_warn(&hw->pdev->dev, "%s: tx mapping error\n", dev->name);
1729 dev_kfree_skb(skb);
1730 return NETDEV_TX_OK;
1731 }
1732
1733 /*
1734 * Free ring elements from starting at tx_cons until "done"
1735 *
1736 * NB: the hardware will tell us about partial completion of multi-part
1737 * buffers so make sure not to free skb to early.
1738 */
1739 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1740 {
1741 struct net_device *dev = sky2->netdev;
1742 struct pci_dev *pdev = sky2->hw->pdev;
1743 unsigned idx;
1744
1745 BUG_ON(done >= TX_RING_SIZE);
1746
1747 for (idx = sky2->tx_cons; idx != done;
1748 idx = RING_NEXT(idx, TX_RING_SIZE)) {
1749 struct sky2_tx_le *le = sky2->tx_le + idx;
1750 struct tx_ring_info *re = sky2->tx_ring + idx;
1751
1752 switch(le->opcode & ~HW_OWNER) {
1753 case OP_LARGESEND:
1754 case OP_PACKET:
1755 pci_unmap_single(pdev,
1756 pci_unmap_addr(re, mapaddr),
1757 pci_unmap_len(re, maplen),
1758 PCI_DMA_TODEVICE);
1759 break;
1760 case OP_BUFFER:
1761 pci_unmap_page(pdev, pci_unmap_addr(re, mapaddr),
1762 pci_unmap_len(re, maplen),
1763 PCI_DMA_TODEVICE);
1764 break;
1765 }
1766
1767 if (le->ctrl & EOP) {
1768 struct sk_buff *skb = re->skb;
1769
1770 if (unlikely(netif_msg_tx_done(sky2)))
1771 printk(KERN_DEBUG "%s: tx done %u\n",
1772 dev->name, idx);
1773
1774 dev->stats.tx_packets++;
1775 dev->stats.tx_bytes += skb->len;
1776
1777 if (skb_queue_len(&sky2->rx_recycle) < sky2->rx_pending
1778 && skb_recycle_check(skb, sky2->rx_data_size
1779 + sky2_rx_pad(sky2->hw)))
1780 __skb_queue_head(&sky2->rx_recycle, skb);
1781 else
1782 dev_kfree_skb_any(skb);
1783
1784 sky2->tx_next = RING_NEXT(idx, TX_RING_SIZE);
1785 }
1786 }
1787
1788 sky2->tx_cons = idx;
1789 smp_mb();
1790
1791 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
1792 netif_wake_queue(dev);
1793 }
1794
1795 /* Cleanup all untransmitted buffers, assume transmitter not running */
1796 static void sky2_tx_clean(struct net_device *dev)
1797 {
1798 struct sky2_port *sky2 = netdev_priv(dev);
1799
1800 netif_tx_lock_bh(dev);
1801 sky2_tx_complete(sky2, sky2->tx_prod);
1802 netif_tx_unlock_bh(dev);
1803 }
1804
1805 /* Network shutdown */
1806 static int sky2_down(struct net_device *dev)
1807 {
1808 struct sky2_port *sky2 = netdev_priv(dev);
1809 struct sky2_hw *hw = sky2->hw;
1810 unsigned port = sky2->port;
1811 u16 ctrl;
1812 u32 imask;
1813
1814 /* Never really got started! */
1815 if (!sky2->tx_le)
1816 return 0;
1817
1818 if (netif_msg_ifdown(sky2))
1819 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1820
1821 /* Force flow control off */
1822 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1823
1824 /* Stop transmitter */
1825 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1826 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1827
1828 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1829 RB_RST_SET | RB_DIS_OP_MD);
1830
1831 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1832 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1833 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1834
1835 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1836
1837 /* Workaround shared GMAC reset */
1838 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1839 && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1840 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1841
1842 /* Disable Force Sync bit and Enable Alloc bit */
1843 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1844 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1845
1846 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1847 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1848 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1849
1850 /* Reset the PCI FIFO of the async Tx queue */
1851 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1852 BMU_RST_SET | BMU_FIFO_RST);
1853
1854 /* Reset the Tx prefetch units */
1855 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1856 PREF_UNIT_RST_SET);
1857
1858 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1859
1860 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1861 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1862
1863 /* Force any delayed status interrrupt and NAPI */
1864 sky2_write32(hw, STAT_LEV_TIMER_CNT, 0);
1865 sky2_write32(hw, STAT_TX_TIMER_CNT, 0);
1866 sky2_write32(hw, STAT_ISR_TIMER_CNT, 0);
1867 sky2_read8(hw, STAT_ISR_TIMER_CTRL);
1868
1869 sky2_rx_stop(sky2);
1870
1871 /* Disable port IRQ */
1872 imask = sky2_read32(hw, B0_IMSK);
1873 imask &= ~portirq_msk[port];
1874 sky2_write32(hw, B0_IMSK, imask);
1875 sky2_read32(hw, B0_IMSK);
1876
1877 synchronize_irq(hw->pdev->irq);
1878 napi_synchronize(&hw->napi);
1879
1880 sky2_phy_power_down(hw, port);
1881
1882 /* turn off LED's */
1883 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1884
1885 sky2_tx_clean(dev);
1886 sky2_rx_clean(sky2);
1887
1888 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1889 sky2->rx_le, sky2->rx_le_map);
1890 kfree(sky2->rx_ring);
1891
1892 pci_free_consistent(hw->pdev,
1893 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1894 sky2->tx_le, sky2->tx_le_map);
1895 kfree(sky2->tx_ring);
1896
1897 sky2->tx_le = NULL;
1898 sky2->rx_le = NULL;
1899
1900 sky2->rx_ring = NULL;
1901 sky2->tx_ring = NULL;
1902
1903 return 0;
1904 }
1905
1906 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1907 {
1908 if (hw->flags & SKY2_HW_FIBRE_PHY)
1909 return SPEED_1000;
1910
1911 if (!(hw->flags & SKY2_HW_GIGABIT)) {
1912 if (aux & PHY_M_PS_SPEED_100)
1913 return SPEED_100;
1914 else
1915 return SPEED_10;
1916 }
1917
1918 switch (aux & PHY_M_PS_SPEED_MSK) {
1919 case PHY_M_PS_SPEED_1000:
1920 return SPEED_1000;
1921 case PHY_M_PS_SPEED_100:
1922 return SPEED_100;
1923 default:
1924 return SPEED_10;
1925 }
1926 }
1927
1928 static void sky2_link_up(struct sky2_port *sky2)
1929 {
1930 struct sky2_hw *hw = sky2->hw;
1931 unsigned port = sky2->port;
1932 u16 reg;
1933 static const char *fc_name[] = {
1934 [FC_NONE] = "none",
1935 [FC_TX] = "tx",
1936 [FC_RX] = "rx",
1937 [FC_BOTH] = "both",
1938 };
1939
1940 /* enable Rx/Tx */
1941 reg = gma_read16(hw, port, GM_GP_CTRL);
1942 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1943 gma_write16(hw, port, GM_GP_CTRL, reg);
1944
1945 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1946
1947 netif_carrier_on(sky2->netdev);
1948
1949 mod_timer(&hw->watchdog_timer, jiffies + 1);
1950
1951 /* Turn on link LED */
1952 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1953 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1954
1955 if (netif_msg_link(sky2))
1956 printk(KERN_INFO PFX
1957 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1958 sky2->netdev->name, sky2->speed,
1959 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1960 fc_name[sky2->flow_status]);
1961 }
1962
1963 static void sky2_link_down(struct sky2_port *sky2)
1964 {
1965 struct sky2_hw *hw = sky2->hw;
1966 unsigned port = sky2->port;
1967 u16 reg;
1968
1969 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1970
1971 reg = gma_read16(hw, port, GM_GP_CTRL);
1972 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1973 gma_write16(hw, port, GM_GP_CTRL, reg);
1974
1975 netif_carrier_off(sky2->netdev);
1976
1977 /* Turn on link LED */
1978 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1979
1980 if (netif_msg_link(sky2))
1981 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
1982
1983 sky2_phy_init(hw, port);
1984 }
1985
1986 static enum flow_control sky2_flow(int rx, int tx)
1987 {
1988 if (rx)
1989 return tx ? FC_BOTH : FC_RX;
1990 else
1991 return tx ? FC_TX : FC_NONE;
1992 }
1993
1994 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
1995 {
1996 struct sky2_hw *hw = sky2->hw;
1997 unsigned port = sky2->port;
1998 u16 advert, lpa;
1999
2000 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
2001 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
2002 if (lpa & PHY_M_AN_RF) {
2003 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
2004 return -1;
2005 }
2006
2007 if (!(aux & PHY_M_PS_SPDUP_RES)) {
2008 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
2009 sky2->netdev->name);
2010 return -1;
2011 }
2012
2013 sky2->speed = sky2_phy_speed(hw, aux);
2014 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2015
2016 /* Since the pause result bits seem to in different positions on
2017 * different chips. look at registers.
2018 */
2019 if (hw->flags & SKY2_HW_FIBRE_PHY) {
2020 /* Shift for bits in fiber PHY */
2021 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
2022 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
2023
2024 if (advert & ADVERTISE_1000XPAUSE)
2025 advert |= ADVERTISE_PAUSE_CAP;
2026 if (advert & ADVERTISE_1000XPSE_ASYM)
2027 advert |= ADVERTISE_PAUSE_ASYM;
2028 if (lpa & LPA_1000XPAUSE)
2029 lpa |= LPA_PAUSE_CAP;
2030 if (lpa & LPA_1000XPAUSE_ASYM)
2031 lpa |= LPA_PAUSE_ASYM;
2032 }
2033
2034 sky2->flow_status = FC_NONE;
2035 if (advert & ADVERTISE_PAUSE_CAP) {
2036 if (lpa & LPA_PAUSE_CAP)
2037 sky2->flow_status = FC_BOTH;
2038 else if (advert & ADVERTISE_PAUSE_ASYM)
2039 sky2->flow_status = FC_RX;
2040 } else if (advert & ADVERTISE_PAUSE_ASYM) {
2041 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
2042 sky2->flow_status = FC_TX;
2043 }
2044
2045 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000
2046 && !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
2047 sky2->flow_status = FC_NONE;
2048
2049 if (sky2->flow_status & FC_TX)
2050 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2051 else
2052 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2053
2054 return 0;
2055 }
2056
2057 /* Interrupt from PHY */
2058 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
2059 {
2060 struct net_device *dev = hw->dev[port];
2061 struct sky2_port *sky2 = netdev_priv(dev);
2062 u16 istatus, phystat;
2063
2064 if (!netif_running(dev))
2065 return;
2066
2067 spin_lock(&sky2->phy_lock);
2068 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2069 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2070
2071 if (netif_msg_intr(sky2))
2072 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
2073 sky2->netdev->name, istatus, phystat);
2074
2075 if (sky2->autoneg == AUTONEG_ENABLE && (istatus & PHY_M_IS_AN_COMPL)) {
2076 if (sky2_autoneg_done(sky2, phystat) == 0)
2077 sky2_link_up(sky2);
2078 goto out;
2079 }
2080
2081 if (istatus & PHY_M_IS_LSP_CHANGE)
2082 sky2->speed = sky2_phy_speed(hw, phystat);
2083
2084 if (istatus & PHY_M_IS_DUP_CHANGE)
2085 sky2->duplex =
2086 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2087
2088 if (istatus & PHY_M_IS_LST_CHANGE) {
2089 if (phystat & PHY_M_PS_LINK_UP)
2090 sky2_link_up(sky2);
2091 else
2092 sky2_link_down(sky2);
2093 }
2094 out:
2095 spin_unlock(&sky2->phy_lock);
2096 }
2097
2098 /* Transmit timeout is only called if we are running, carrier is up
2099 * and tx queue is full (stopped).
2100 */
2101 static void sky2_tx_timeout(struct net_device *dev)
2102 {
2103 struct sky2_port *sky2 = netdev_priv(dev);
2104 struct sky2_hw *hw = sky2->hw;
2105
2106 if (netif_msg_timer(sky2))
2107 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
2108
2109 printk(KERN_DEBUG PFX "%s: transmit ring %u .. %u report=%u done=%u\n",
2110 dev->name, sky2->tx_cons, sky2->tx_prod,
2111 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
2112 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
2113
2114 /* can't restart safely under softirq */
2115 schedule_work(&hw->restart_work);
2116 }
2117
2118 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
2119 {
2120 struct sky2_port *sky2 = netdev_priv(dev);
2121 struct sky2_hw *hw = sky2->hw;
2122 unsigned port = sky2->port;
2123 int err;
2124 u16 ctl, mode;
2125 u32 imask;
2126
2127 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2128 return -EINVAL;
2129
2130 if (new_mtu > ETH_DATA_LEN &&
2131 (hw->chip_id == CHIP_ID_YUKON_FE ||
2132 hw->chip_id == CHIP_ID_YUKON_FE_P))
2133 return -EINVAL;
2134
2135 if (!netif_running(dev)) {
2136 dev->mtu = new_mtu;
2137 return 0;
2138 }
2139
2140 imask = sky2_read32(hw, B0_IMSK);
2141 sky2_write32(hw, B0_IMSK, 0);
2142
2143 dev->trans_start = jiffies; /* prevent tx timeout */
2144 netif_stop_queue(dev);
2145 napi_disable(&hw->napi);
2146
2147 synchronize_irq(hw->pdev->irq);
2148
2149 if (!(hw->flags & SKY2_HW_RAM_BUFFER))
2150 sky2_set_tx_stfwd(hw, port);
2151
2152 ctl = gma_read16(hw, port, GM_GP_CTRL);
2153 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2154 sky2_rx_stop(sky2);
2155 sky2_rx_clean(sky2);
2156
2157 dev->mtu = new_mtu;
2158
2159 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
2160 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
2161
2162 if (dev->mtu > ETH_DATA_LEN)
2163 mode |= GM_SMOD_JUMBO_ENA;
2164
2165 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2166
2167 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2168
2169 err = sky2_rx_start(sky2);
2170 sky2_write32(hw, B0_IMSK, imask);
2171
2172 sky2_read32(hw, B0_Y2_SP_LISR);
2173 napi_enable(&hw->napi);
2174
2175 if (err)
2176 dev_close(dev);
2177 else {
2178 gma_write16(hw, port, GM_GP_CTRL, ctl);
2179
2180 netif_wake_queue(dev);
2181 }
2182
2183 return err;
2184 }
2185
2186 /* For small just reuse existing skb for next receive */
2187 static struct sk_buff *receive_copy(struct sky2_port *sky2,
2188 const struct rx_ring_info *re,
2189 unsigned length)
2190 {
2191 struct sk_buff *skb;
2192
2193 skb = netdev_alloc_skb(sky2->netdev, length + 2);
2194 if (likely(skb)) {
2195 skb_reserve(skb, 2);
2196 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2197 length, PCI_DMA_FROMDEVICE);
2198 skb_copy_from_linear_data(re->skb, skb->data, length);
2199 skb->ip_summed = re->skb->ip_summed;
2200 skb->csum = re->skb->csum;
2201 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2202 length, PCI_DMA_FROMDEVICE);
2203 re->skb->ip_summed = CHECKSUM_NONE;
2204 skb_put(skb, length);
2205 }
2206 return skb;
2207 }
2208
2209 /* Adjust length of skb with fragments to match received data */
2210 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2211 unsigned int length)
2212 {
2213 int i, num_frags;
2214 unsigned int size;
2215
2216 /* put header into skb */
2217 size = min(length, hdr_space);
2218 skb->tail += size;
2219 skb->len += size;
2220 length -= size;
2221
2222 num_frags = skb_shinfo(skb)->nr_frags;
2223 for (i = 0; i < num_frags; i++) {
2224 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2225
2226 if (length == 0) {
2227 /* don't need this page */
2228 __free_page(frag->page);
2229 --skb_shinfo(skb)->nr_frags;
2230 } else {
2231 size = min(length, (unsigned) PAGE_SIZE);
2232
2233 frag->size = size;
2234 skb->data_len += size;
2235 skb->truesize += size;
2236 skb->len += size;
2237 length -= size;
2238 }
2239 }
2240 }
2241
2242 /* Normal packet - take skb from ring element and put in a new one */
2243 static struct sk_buff *receive_new(struct sky2_port *sky2,
2244 struct rx_ring_info *re,
2245 unsigned int length)
2246 {
2247 struct sk_buff *skb, *nskb;
2248 unsigned hdr_space = sky2->rx_data_size;
2249
2250 /* Don't be tricky about reusing pages (yet) */
2251 nskb = sky2_rx_alloc(sky2);
2252 if (unlikely(!nskb))
2253 return NULL;
2254
2255 skb = re->skb;
2256 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2257
2258 prefetch(skb->data);
2259 re->skb = nskb;
2260 if (sky2_rx_map_skb(sky2->hw->pdev, re, hdr_space)) {
2261 dev_kfree_skb(nskb);
2262 re->skb = skb;
2263 return NULL;
2264 }
2265
2266 if (skb_shinfo(skb)->nr_frags)
2267 skb_put_frags(skb, hdr_space, length);
2268 else
2269 skb_put(skb, length);
2270 return skb;
2271 }
2272
2273 /*
2274 * Receive one packet.
2275 * For larger packets, get new buffer.
2276 */
2277 static struct sk_buff *sky2_receive(struct net_device *dev,
2278 u16 length, u32 status)
2279 {
2280 struct sky2_port *sky2 = netdev_priv(dev);
2281 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2282 struct sk_buff *skb = NULL;
2283 u16 count = (status & GMR_FS_LEN) >> 16;
2284
2285 #ifdef SKY2_VLAN_TAG_USED
2286 /* Account for vlan tag */
2287 if (sky2->vlgrp && (status & GMR_FS_VLAN))
2288 count -= VLAN_HLEN;
2289 #endif
2290
2291 if (unlikely(netif_msg_rx_status(sky2)))
2292 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
2293 dev->name, sky2->rx_next, status, length);
2294
2295 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2296 prefetch(sky2->rx_ring + sky2->rx_next);
2297
2298 /* This chip has hardware problems that generates bogus status.
2299 * So do only marginal checking and expect higher level protocols
2300 * to handle crap frames.
2301 */
2302 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2303 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2304 length != count)
2305 goto okay;
2306
2307 if (status & GMR_FS_ANY_ERR)
2308 goto error;
2309
2310 if (!(status & GMR_FS_RX_OK))
2311 goto resubmit;
2312
2313 /* if length reported by DMA does not match PHY, packet was truncated */
2314 if (length != count)
2315 goto len_error;
2316
2317 okay:
2318 if (length < copybreak)
2319 skb = receive_copy(sky2, re, length);
2320 else
2321 skb = receive_new(sky2, re, length);
2322 resubmit:
2323 sky2_rx_submit(sky2, re);
2324
2325 return skb;
2326
2327 len_error:
2328 /* Truncation of overlength packets
2329 causes PHY length to not match MAC length */
2330 ++dev->stats.rx_length_errors;
2331 if (netif_msg_rx_err(sky2) && net_ratelimit())
2332 pr_info(PFX "%s: rx length error: status %#x length %d\n",
2333 dev->name, status, length);
2334 goto resubmit;
2335
2336 error:
2337 ++dev->stats.rx_errors;
2338 if (status & GMR_FS_RX_FF_OV) {
2339 dev->stats.rx_over_errors++;
2340 goto resubmit;
2341 }
2342
2343 if (netif_msg_rx_err(sky2) && net_ratelimit())
2344 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
2345 dev->name, status, length);
2346
2347 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
2348 dev->stats.rx_length_errors++;
2349 if (status & GMR_FS_FRAGMENT)
2350 dev->stats.rx_frame_errors++;
2351 if (status & GMR_FS_CRC_ERR)
2352 dev->stats.rx_crc_errors++;
2353
2354 goto resubmit;
2355 }
2356
2357 /* Transmit complete */
2358 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2359 {
2360 struct sky2_port *sky2 = netdev_priv(dev);
2361
2362 if (netif_running(dev)) {
2363 netif_tx_lock(dev);
2364 sky2_tx_complete(sky2, last);
2365 netif_tx_unlock(dev);
2366 }
2367 }
2368
2369 static inline void sky2_skb_rx(const struct sky2_port *sky2,
2370 u32 status, struct sk_buff *skb)
2371 {
2372 #ifdef SKY2_VLAN_TAG_USED
2373 u16 vlan_tag = be16_to_cpu(sky2->rx_tag);
2374 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
2375 if (skb->ip_summed == CHECKSUM_NONE)
2376 vlan_hwaccel_receive_skb(skb, sky2->vlgrp, vlan_tag);
2377 else
2378 vlan_gro_receive(&sky2->hw->napi, sky2->vlgrp,
2379 vlan_tag, skb);
2380 return;
2381 }
2382 #endif
2383 if (skb->ip_summed == CHECKSUM_NONE)
2384 netif_receive_skb(skb);
2385 else
2386 napi_gro_receive(&sky2->hw->napi, skb);
2387 }
2388
2389 static inline void sky2_rx_done(struct sky2_hw *hw, unsigned port,
2390 unsigned packets, unsigned bytes)
2391 {
2392 if (packets) {
2393 struct net_device *dev = hw->dev[port];
2394
2395 dev->stats.rx_packets += packets;
2396 dev->stats.rx_bytes += bytes;
2397 dev->last_rx = jiffies;
2398 sky2_rx_update(netdev_priv(dev), rxqaddr[port]);
2399 }
2400 }
2401
2402 /* Process status response ring */
2403 static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
2404 {
2405 int work_done = 0;
2406 unsigned int total_bytes[2] = { 0 };
2407 unsigned int total_packets[2] = { 0 };
2408
2409 rmb();
2410 do {
2411 struct sky2_port *sky2;
2412 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2413 unsigned port;
2414 struct net_device *dev;
2415 struct sk_buff *skb;
2416 u32 status;
2417 u16 length;
2418 u8 opcode = le->opcode;
2419
2420 if (!(opcode & HW_OWNER))
2421 break;
2422
2423 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
2424
2425 port = le->css & CSS_LINK_BIT;
2426 dev = hw->dev[port];
2427 sky2 = netdev_priv(dev);
2428 length = le16_to_cpu(le->length);
2429 status = le32_to_cpu(le->status);
2430
2431 le->opcode = 0;
2432 switch (opcode & ~HW_OWNER) {
2433 case OP_RXSTAT:
2434 total_packets[port]++;
2435 total_bytes[port] += length;
2436 skb = sky2_receive(dev, length, status);
2437 if (unlikely(!skb)) {
2438 dev->stats.rx_dropped++;
2439 break;
2440 }
2441
2442 /* This chip reports checksum status differently */
2443 if (hw->flags & SKY2_HW_NEW_LE) {
2444 if (sky2->rx_csum &&
2445 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2446 (le->css & CSS_TCPUDPCSOK))
2447 skb->ip_summed = CHECKSUM_UNNECESSARY;
2448 else
2449 skb->ip_summed = CHECKSUM_NONE;
2450 }
2451
2452 skb->protocol = eth_type_trans(skb, dev);
2453
2454 sky2_skb_rx(sky2, status, skb);
2455
2456 /* Stop after net poll weight */
2457 if (++work_done >= to_do)
2458 goto exit_loop;
2459 break;
2460
2461 #ifdef SKY2_VLAN_TAG_USED
2462 case OP_RXVLAN:
2463 sky2->rx_tag = length;
2464 break;
2465
2466 case OP_RXCHKSVLAN:
2467 sky2->rx_tag = length;
2468 /* fall through */
2469 #endif
2470 case OP_RXCHKS:
2471 if (!sky2->rx_csum)
2472 break;
2473
2474 /* If this happens then driver assuming wrong format */
2475 if (unlikely(hw->flags & SKY2_HW_NEW_LE)) {
2476 if (net_ratelimit())
2477 printk(KERN_NOTICE "%s: unexpected"
2478 " checksum status\n",
2479 dev->name);
2480 break;
2481 }
2482
2483 /* Both checksum counters are programmed to start at
2484 * the same offset, so unless there is a problem they
2485 * should match. This failure is an early indication that
2486 * hardware receive checksumming won't work.
2487 */
2488 if (likely(status >> 16 == (status & 0xffff))) {
2489 skb = sky2->rx_ring[sky2->rx_next].skb;
2490 skb->ip_summed = CHECKSUM_COMPLETE;
2491 skb->csum = le16_to_cpu(status);
2492 } else {
2493 printk(KERN_NOTICE PFX "%s: hardware receive "
2494 "checksum problem (status = %#x)\n",
2495 dev->name, status);
2496 sky2->rx_csum = 0;
2497 sky2_write32(sky2->hw,
2498 Q_ADDR(rxqaddr[port], Q_CSR),
2499 BMU_DIS_RX_CHKSUM);
2500 }
2501 break;
2502
2503 case OP_TXINDEXLE:
2504 /* TX index reports status for both ports */
2505 BUILD_BUG_ON(TX_RING_SIZE > 0x1000);
2506 sky2_tx_done(hw->dev[0], status & 0xfff);
2507 if (hw->dev[1])
2508 sky2_tx_done(hw->dev[1],
2509 ((status >> 24) & 0xff)
2510 | (u16)(length & 0xf) << 8);
2511 break;
2512
2513 default:
2514 if (net_ratelimit())
2515 printk(KERN_WARNING PFX
2516 "unknown status opcode 0x%x\n", opcode);
2517 }
2518 } while (hw->st_idx != idx);
2519
2520 /* Fully processed status ring so clear irq */
2521 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2522
2523 exit_loop:
2524 sky2_rx_done(hw, 0, total_packets[0], total_bytes[0]);
2525 sky2_rx_done(hw, 1, total_packets[1], total_bytes[1]);
2526
2527 return work_done;
2528 }
2529
2530 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2531 {
2532 struct net_device *dev = hw->dev[port];
2533
2534 if (net_ratelimit())
2535 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
2536 dev->name, status);
2537
2538 if (status & Y2_IS_PAR_RD1) {
2539 if (net_ratelimit())
2540 printk(KERN_ERR PFX "%s: ram data read parity error\n",
2541 dev->name);
2542 /* Clear IRQ */
2543 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2544 }
2545
2546 if (status & Y2_IS_PAR_WR1) {
2547 if (net_ratelimit())
2548 printk(KERN_ERR PFX "%s: ram data write parity error\n",
2549 dev->name);
2550
2551 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2552 }
2553
2554 if (status & Y2_IS_PAR_MAC1) {
2555 if (net_ratelimit())
2556 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
2557 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2558 }
2559
2560 if (status & Y2_IS_PAR_RX1) {
2561 if (net_ratelimit())
2562 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
2563 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2564 }
2565
2566 if (status & Y2_IS_TCP_TXA1) {
2567 if (net_ratelimit())
2568 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
2569 dev->name);
2570 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2571 }
2572 }
2573
2574 static void sky2_hw_intr(struct sky2_hw *hw)
2575 {
2576 struct pci_dev *pdev = hw->pdev;
2577 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2578 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2579
2580 status &= hwmsk;
2581
2582 if (status & Y2_IS_TIST_OV)
2583 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2584
2585 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2586 u16 pci_err;
2587
2588 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2589 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2590 if (net_ratelimit())
2591 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
2592 pci_err);
2593
2594 sky2_pci_write16(hw, PCI_STATUS,
2595 pci_err | PCI_STATUS_ERROR_BITS);
2596 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2597 }
2598
2599 if (status & Y2_IS_PCI_EXP) {
2600 /* PCI-Express uncorrectable Error occurred */
2601 u32 err;
2602
2603 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2604 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2605 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2606 0xfffffffful);
2607 if (net_ratelimit())
2608 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
2609
2610 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2611 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2612 }
2613
2614 if (status & Y2_HWE_L1_MASK)
2615 sky2_hw_error(hw, 0, status);
2616 status >>= 8;
2617 if (status & Y2_HWE_L1_MASK)
2618 sky2_hw_error(hw, 1, status);
2619 }
2620
2621 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2622 {
2623 struct net_device *dev = hw->dev[port];
2624 struct sky2_port *sky2 = netdev_priv(dev);
2625 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2626
2627 if (netif_msg_intr(sky2))
2628 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2629 dev->name, status);
2630
2631 if (status & GM_IS_RX_CO_OV)
2632 gma_read16(hw, port, GM_RX_IRQ_SRC);
2633
2634 if (status & GM_IS_TX_CO_OV)
2635 gma_read16(hw, port, GM_TX_IRQ_SRC);
2636
2637 if (status & GM_IS_RX_FF_OR) {
2638 ++dev->stats.rx_fifo_errors;
2639 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2640 }
2641
2642 if (status & GM_IS_TX_FF_UR) {
2643 ++dev->stats.tx_fifo_errors;
2644 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2645 }
2646 }
2647
2648 /* This should never happen it is a bug. */
2649 static void sky2_le_error(struct sky2_hw *hw, unsigned port,
2650 u16 q, unsigned ring_size)
2651 {
2652 struct net_device *dev = hw->dev[port];
2653 struct sky2_port *sky2 = netdev_priv(dev);
2654 unsigned idx;
2655 const u64 *le = (q == Q_R1 || q == Q_R2)
2656 ? (u64 *) sky2->rx_le : (u64 *) sky2->tx_le;
2657
2658 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2659 printk(KERN_ERR PFX "%s: descriptor error q=%#x get=%u [%llx] put=%u\n",
2660 dev->name, (unsigned) q, idx, (unsigned long long) le[idx],
2661 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2662
2663 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2664 }
2665
2666 static int sky2_rx_hung(struct net_device *dev)
2667 {
2668 struct sky2_port *sky2 = netdev_priv(dev);
2669 struct sky2_hw *hw = sky2->hw;
2670 unsigned port = sky2->port;
2671 unsigned rxq = rxqaddr[port];
2672 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2673 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2674 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2675 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2676
2677 /* If idle and MAC or PCI is stuck */
2678 if (sky2->check.last == dev->last_rx &&
2679 ((mac_rp == sky2->check.mac_rp &&
2680 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2681 /* Check if the PCI RX hang */
2682 (fifo_rp == sky2->check.fifo_rp &&
2683 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2684 printk(KERN_DEBUG PFX "%s: hung mac %d:%d fifo %d (%d:%d)\n",
2685 dev->name, mac_lev, mac_rp, fifo_lev, fifo_rp,
2686 sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2687 return 1;
2688 } else {
2689 sky2->check.last = dev->last_rx;
2690 sky2->check.mac_rp = mac_rp;
2691 sky2->check.mac_lev = mac_lev;
2692 sky2->check.fifo_rp = fifo_rp;
2693 sky2->check.fifo_lev = fifo_lev;
2694 return 0;
2695 }
2696 }
2697
2698 static void sky2_watchdog(unsigned long arg)
2699 {
2700 struct sky2_hw *hw = (struct sky2_hw *) arg;
2701
2702 /* Check for lost IRQ once a second */
2703 if (sky2_read32(hw, B0_ISRC)) {
2704 napi_schedule(&hw->napi);
2705 } else {
2706 int i, active = 0;
2707
2708 for (i = 0; i < hw->ports; i++) {
2709 struct net_device *dev = hw->dev[i];
2710 if (!netif_running(dev))
2711 continue;
2712 ++active;
2713
2714 /* For chips with Rx FIFO, check if stuck */
2715 if ((hw->flags & SKY2_HW_RAM_BUFFER) &&
2716 sky2_rx_hung(dev)) {
2717 pr_info(PFX "%s: receiver hang detected\n",
2718 dev->name);
2719 schedule_work(&hw->restart_work);
2720 return;
2721 }
2722 }
2723
2724 if (active == 0)
2725 return;
2726 }
2727
2728 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
2729 }
2730
2731 /* Hardware/software error handling */
2732 static void sky2_err_intr(struct sky2_hw *hw, u32 status)
2733 {
2734 if (net_ratelimit())
2735 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
2736
2737 if (status & Y2_IS_HW_ERR)
2738 sky2_hw_intr(hw);
2739
2740 if (status & Y2_IS_IRQ_MAC1)
2741 sky2_mac_intr(hw, 0);
2742
2743 if (status & Y2_IS_IRQ_MAC2)
2744 sky2_mac_intr(hw, 1);
2745
2746 if (status & Y2_IS_CHK_RX1)
2747 sky2_le_error(hw, 0, Q_R1, RX_LE_SIZE);
2748
2749 if (status & Y2_IS_CHK_RX2)
2750 sky2_le_error(hw, 1, Q_R2, RX_LE_SIZE);
2751
2752 if (status & Y2_IS_CHK_TXA1)
2753 sky2_le_error(hw, 0, Q_XA1, TX_RING_SIZE);
2754
2755 if (status & Y2_IS_CHK_TXA2)
2756 sky2_le_error(hw, 1, Q_XA2, TX_RING_SIZE);
2757 }
2758
2759 static int sky2_poll(struct napi_struct *napi, int work_limit)
2760 {
2761 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
2762 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2763 int work_done = 0;
2764 u16 idx;
2765
2766 if (unlikely(status & Y2_IS_ERROR))
2767 sky2_err_intr(hw, status);
2768
2769 if (status & Y2_IS_IRQ_PHY1)
2770 sky2_phy_intr(hw, 0);
2771
2772 if (status & Y2_IS_IRQ_PHY2)
2773 sky2_phy_intr(hw, 1);
2774
2775 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
2776 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
2777
2778 if (work_done >= work_limit)
2779 goto done;
2780 }
2781
2782 napi_complete(napi);
2783 sky2_read32(hw, B0_Y2_SP_LISR);
2784 done:
2785
2786 return work_done;
2787 }
2788
2789 static irqreturn_t sky2_intr(int irq, void *dev_id)
2790 {
2791 struct sky2_hw *hw = dev_id;
2792 u32 status;
2793
2794 /* Reading this mask interrupts as side effect */
2795 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2796 if (status == 0 || status == ~0)
2797 return IRQ_NONE;
2798
2799 prefetch(&hw->st_le[hw->st_idx]);
2800
2801 napi_schedule(&hw->napi);
2802
2803 return IRQ_HANDLED;
2804 }
2805
2806 #ifdef CONFIG_NET_POLL_CONTROLLER
2807 static void sky2_netpoll(struct net_device *dev)
2808 {
2809 struct sky2_port *sky2 = netdev_priv(dev);
2810
2811 napi_schedule(&sky2->hw->napi);
2812 }
2813 #endif
2814
2815 /* Chip internal frequency for clock calculations */
2816 static u32 sky2_mhz(const struct sky2_hw *hw)
2817 {
2818 switch (hw->chip_id) {
2819 case CHIP_ID_YUKON_EC:
2820 case CHIP_ID_YUKON_EC_U:
2821 case CHIP_ID_YUKON_EX:
2822 case CHIP_ID_YUKON_SUPR:
2823 case CHIP_ID_YUKON_UL_2:
2824 return 125;
2825
2826 case CHIP_ID_YUKON_FE:
2827 return 100;
2828
2829 case CHIP_ID_YUKON_FE_P:
2830 return 50;
2831
2832 case CHIP_ID_YUKON_XL:
2833 return 156;
2834
2835 default:
2836 BUG();
2837 }
2838 }
2839
2840 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2841 {
2842 return sky2_mhz(hw) * us;
2843 }
2844
2845 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2846 {
2847 return clk / sky2_mhz(hw);
2848 }
2849
2850
2851 static int __devinit sky2_init(struct sky2_hw *hw)
2852 {
2853 u8 t8;
2854
2855 /* Enable all clocks and check for bad PCI access */
2856 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
2857
2858 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2859
2860 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2861 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2862
2863 switch(hw->chip_id) {
2864 case CHIP_ID_YUKON_XL:
2865 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
2866 break;
2867
2868 case CHIP_ID_YUKON_EC_U:
2869 hw->flags = SKY2_HW_GIGABIT
2870 | SKY2_HW_NEWER_PHY
2871 | SKY2_HW_ADV_POWER_CTL;
2872 break;
2873
2874 case CHIP_ID_YUKON_EX:
2875 hw->flags = SKY2_HW_GIGABIT
2876 | SKY2_HW_NEWER_PHY
2877 | SKY2_HW_NEW_LE
2878 | SKY2_HW_ADV_POWER_CTL;
2879
2880 /* New transmit checksum */
2881 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
2882 hw->flags |= SKY2_HW_AUTO_TX_SUM;
2883 break;
2884
2885 case CHIP_ID_YUKON_EC:
2886 /* This rev is really old, and requires untested workarounds */
2887 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
2888 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
2889 return -EOPNOTSUPP;
2890 }
2891 hw->flags = SKY2_HW_GIGABIT;
2892 break;
2893
2894 case CHIP_ID_YUKON_FE:
2895 break;
2896
2897 case CHIP_ID_YUKON_FE_P:
2898 hw->flags = SKY2_HW_NEWER_PHY
2899 | SKY2_HW_NEW_LE
2900 | SKY2_HW_AUTO_TX_SUM
2901 | SKY2_HW_ADV_POWER_CTL;
2902 break;
2903
2904 case CHIP_ID_YUKON_SUPR:
2905 hw->flags = SKY2_HW_GIGABIT
2906 | SKY2_HW_NEWER_PHY
2907 | SKY2_HW_NEW_LE
2908 | SKY2_HW_AUTO_TX_SUM
2909 | SKY2_HW_ADV_POWER_CTL;
2910 break;
2911
2912 case CHIP_ID_YUKON_UL_2:
2913 hw->flags = SKY2_HW_GIGABIT
2914 | SKY2_HW_ADV_POWER_CTL;
2915 break;
2916
2917 default:
2918 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
2919 hw->chip_id);
2920 return -EOPNOTSUPP;
2921 }
2922
2923 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
2924 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
2925 hw->flags |= SKY2_HW_FIBRE_PHY;
2926
2927 hw->ports = 1;
2928 t8 = sky2_read8(hw, B2_Y2_HW_RES);
2929 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
2930 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2931 ++hw->ports;
2932 }
2933
2934 return 0;
2935 }
2936
2937 static void sky2_reset(struct sky2_hw *hw)
2938 {
2939 struct pci_dev *pdev = hw->pdev;
2940 u16 status;
2941 int i, cap;
2942 u32 hwe_mask = Y2_HWE_ALL_MASK;
2943
2944 /* disable ASF */
2945 if (hw->chip_id == CHIP_ID_YUKON_EX) {
2946 status = sky2_read16(hw, HCU_CCSR);
2947 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
2948 HCU_CCSR_UC_STATE_MSK);
2949 sky2_write16(hw, HCU_CCSR, status);
2950 } else
2951 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2952 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2953
2954 /* do a SW reset */
2955 sky2_write8(hw, B0_CTST, CS_RST_SET);
2956 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2957
2958 /* allow writes to PCI config */
2959 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2960
2961 /* clear PCI errors, if any */
2962 status = sky2_pci_read16(hw, PCI_STATUS);
2963 status |= PCI_STATUS_ERROR_BITS;
2964 sky2_pci_write16(hw, PCI_STATUS, status);
2965
2966 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2967
2968 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
2969 if (cap) {
2970 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2971 0xfffffffful);
2972
2973 /* If error bit is stuck on ignore it */
2974 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
2975 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
2976 else
2977 hwe_mask |= Y2_IS_PCI_EXP;
2978 }
2979
2980 sky2_power_on(hw);
2981 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2982
2983 for (i = 0; i < hw->ports; i++) {
2984 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2985 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2986
2987 if (hw->chip_id == CHIP_ID_YUKON_EX ||
2988 hw->chip_id == CHIP_ID_YUKON_SUPR)
2989 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
2990 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
2991 | GMC_BYP_RETR_ON);
2992 }
2993
2994 /* Clear I2C IRQ noise */
2995 sky2_write32(hw, B2_I2C_IRQ, 1);
2996
2997 /* turn off hardware timer (unused) */
2998 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2999 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
3000
3001 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
3002
3003 /* Turn off descriptor polling */
3004 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
3005
3006 /* Turn off receive timestamp */
3007 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
3008 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
3009
3010 /* enable the Tx Arbiters */
3011 for (i = 0; i < hw->ports; i++)
3012 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3013
3014 /* Initialize ram interface */
3015 for (i = 0; i < hw->ports; i++) {
3016 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
3017
3018 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
3019 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
3020 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
3021 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
3022 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
3023 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
3024 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
3025 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
3026 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
3027 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
3028 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
3029 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
3030 }
3031
3032 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
3033
3034 for (i = 0; i < hw->ports; i++)
3035 sky2_gmac_reset(hw, i);
3036
3037 memset(hw->st_le, 0, STATUS_LE_BYTES);
3038 hw->st_idx = 0;
3039
3040 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
3041 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
3042
3043 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
3044 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
3045
3046 /* Set the list last index */
3047 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
3048
3049 sky2_write16(hw, STAT_TX_IDX_TH, 10);
3050 sky2_write8(hw, STAT_FIFO_WM, 16);
3051
3052 /* set Status-FIFO ISR watermark */
3053 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
3054 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
3055 else
3056 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
3057
3058 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
3059 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
3060 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
3061
3062 /* enable status unit */
3063 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
3064
3065 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3066 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3067 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3068 }
3069
3070 static void sky2_restart(struct work_struct *work)
3071 {
3072 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
3073 struct net_device *dev;
3074 int i, err;
3075
3076 rtnl_lock();
3077 for (i = 0; i < hw->ports; i++) {
3078 dev = hw->dev[i];
3079 if (netif_running(dev))
3080 sky2_down(dev);
3081 }
3082
3083 napi_disable(&hw->napi);
3084 sky2_write32(hw, B0_IMSK, 0);
3085 sky2_reset(hw);
3086 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3087 napi_enable(&hw->napi);
3088
3089 for (i = 0; i < hw->ports; i++) {
3090 dev = hw->dev[i];
3091 if (netif_running(dev)) {
3092 err = sky2_up(dev);
3093 if (err) {
3094 printk(KERN_INFO PFX "%s: could not restart %d\n",
3095 dev->name, err);
3096 dev_close(dev);
3097 }
3098 }
3099 }
3100
3101 rtnl_unlock();
3102 }
3103
3104 static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
3105 {
3106 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
3107 }
3108
3109 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3110 {
3111 const struct sky2_port *sky2 = netdev_priv(dev);
3112
3113 wol->supported = sky2_wol_supported(sky2->hw);
3114 wol->wolopts = sky2->wol;
3115 }
3116
3117 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3118 {
3119 struct sky2_port *sky2 = netdev_priv(dev);
3120 struct sky2_hw *hw = sky2->hw;
3121
3122 if ((wol->wolopts & ~sky2_wol_supported(sky2->hw))
3123 || !device_can_wakeup(&hw->pdev->dev))
3124 return -EOPNOTSUPP;
3125
3126 sky2->wol = wol->wolopts;
3127
3128 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3129 hw->chip_id == CHIP_ID_YUKON_EX ||
3130 hw->chip_id == CHIP_ID_YUKON_FE_P)
3131 sky2_write32(hw, B0_CTST, sky2->wol
3132 ? Y2_HW_WOL_ON : Y2_HW_WOL_OFF);
3133
3134 device_set_wakeup_enable(&hw->pdev->dev, sky2->wol);
3135
3136 if (!netif_running(dev))
3137 sky2_wol_init(sky2);
3138 return 0;
3139 }
3140
3141 static u32 sky2_supported_modes(const struct sky2_hw *hw)
3142 {
3143 if (sky2_is_copper(hw)) {
3144 u32 modes = SUPPORTED_10baseT_Half
3145 | SUPPORTED_10baseT_Full
3146 | SUPPORTED_100baseT_Half
3147 | SUPPORTED_100baseT_Full
3148 | SUPPORTED_Autoneg | SUPPORTED_TP;
3149
3150 if (hw->flags & SKY2_HW_GIGABIT)
3151 modes |= SUPPORTED_1000baseT_Half
3152 | SUPPORTED_1000baseT_Full;
3153 return modes;
3154 } else
3155 return SUPPORTED_1000baseT_Half
3156 | SUPPORTED_1000baseT_Full
3157 | SUPPORTED_Autoneg
3158 | SUPPORTED_FIBRE;
3159 }
3160
3161 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3162 {
3163 struct sky2_port *sky2 = netdev_priv(dev);
3164 struct sky2_hw *hw = sky2->hw;
3165
3166 ecmd->transceiver = XCVR_INTERNAL;
3167 ecmd->supported = sky2_supported_modes(hw);
3168 ecmd->phy_address = PHY_ADDR_MARV;
3169 if (sky2_is_copper(hw)) {
3170 ecmd->port = PORT_TP;
3171 ecmd->speed = sky2->speed;
3172 } else {
3173 ecmd->speed = SPEED_1000;
3174 ecmd->port = PORT_FIBRE;
3175 }
3176
3177 ecmd->advertising = sky2->advertising;
3178 ecmd->autoneg = sky2->autoneg;
3179 ecmd->duplex = sky2->duplex;
3180 return 0;
3181 }
3182
3183 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3184 {
3185 struct sky2_port *sky2 = netdev_priv(dev);
3186 const struct sky2_hw *hw = sky2->hw;
3187 u32 supported = sky2_supported_modes(hw);
3188
3189 if (ecmd->autoneg == AUTONEG_ENABLE) {
3190 ecmd->advertising = supported;
3191 sky2->duplex = -1;
3192 sky2->speed = -1;
3193 } else {
3194 u32 setting;
3195
3196 switch (ecmd->speed) {
3197 case SPEED_1000:
3198 if (ecmd->duplex == DUPLEX_FULL)
3199 setting = SUPPORTED_1000baseT_Full;
3200 else if (ecmd->duplex == DUPLEX_HALF)
3201 setting = SUPPORTED_1000baseT_Half;
3202 else
3203 return -EINVAL;
3204 break;
3205 case SPEED_100:
3206 if (ecmd->duplex == DUPLEX_FULL)
3207 setting = SUPPORTED_100baseT_Full;
3208 else if (ecmd->duplex == DUPLEX_HALF)
3209 setting = SUPPORTED_100baseT_Half;
3210 else
3211 return -EINVAL;
3212 break;
3213
3214 case SPEED_10:
3215 if (ecmd->duplex == DUPLEX_FULL)
3216 setting = SUPPORTED_10baseT_Full;
3217 else if (ecmd->duplex == DUPLEX_HALF)
3218 setting = SUPPORTED_10baseT_Half;
3219 else
3220 return -EINVAL;
3221 break;
3222 default:
3223 return -EINVAL;
3224 }
3225
3226 if ((setting & supported) == 0)
3227 return -EINVAL;
3228
3229 sky2->speed = ecmd->speed;
3230 sky2->duplex = ecmd->duplex;
3231 }
3232
3233 sky2->autoneg = ecmd->autoneg;
3234 sky2->advertising = ecmd->advertising;
3235
3236 if (netif_running(dev)) {
3237 sky2_phy_reinit(sky2);
3238 sky2_set_multicast(dev);
3239 }
3240
3241 return 0;
3242 }
3243
3244 static void sky2_get_drvinfo(struct net_device *dev,
3245 struct ethtool_drvinfo *info)
3246 {
3247 struct sky2_port *sky2 = netdev_priv(dev);
3248
3249 strcpy(info->driver, DRV_NAME);
3250 strcpy(info->version, DRV_VERSION);
3251 strcpy(info->fw_version, "N/A");
3252 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
3253 }
3254
3255 static const struct sky2_stat {
3256 char name[ETH_GSTRING_LEN];
3257 u16 offset;
3258 } sky2_stats[] = {
3259 { "tx_bytes", GM_TXO_OK_HI },
3260 { "rx_bytes", GM_RXO_OK_HI },
3261 { "tx_broadcast", GM_TXF_BC_OK },
3262 { "rx_broadcast", GM_RXF_BC_OK },
3263 { "tx_multicast", GM_TXF_MC_OK },
3264 { "rx_multicast", GM_RXF_MC_OK },
3265 { "tx_unicast", GM_TXF_UC_OK },
3266 { "rx_unicast", GM_RXF_UC_OK },
3267 { "tx_mac_pause", GM_TXF_MPAUSE },
3268 { "rx_mac_pause", GM_RXF_MPAUSE },
3269 { "collisions", GM_TXF_COL },
3270 { "late_collision",GM_TXF_LAT_COL },
3271 { "aborted", GM_TXF_ABO_COL },
3272 { "single_collisions", GM_TXF_SNG_COL },
3273 { "multi_collisions", GM_TXF_MUL_COL },
3274
3275 { "rx_short", GM_RXF_SHT },
3276 { "rx_runt", GM_RXE_FRAG },
3277 { "rx_64_byte_packets", GM_RXF_64B },
3278 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3279 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3280 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3281 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3282 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3283 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3284 { "rx_too_long", GM_RXF_LNG_ERR },
3285 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3286 { "rx_jabber", GM_RXF_JAB_PKT },
3287 { "rx_fcs_error", GM_RXF_FCS_ERR },
3288
3289 { "tx_64_byte_packets", GM_TXF_64B },
3290 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3291 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3292 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3293 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3294 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3295 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3296 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3297 };
3298
3299 static u32 sky2_get_rx_csum(struct net_device *dev)
3300 {
3301 struct sky2_port *sky2 = netdev_priv(dev);
3302
3303 return sky2->rx_csum;
3304 }
3305
3306 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
3307 {
3308 struct sky2_port *sky2 = netdev_priv(dev);
3309
3310 sky2->rx_csum = data;
3311
3312 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
3313 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
3314
3315 return 0;
3316 }
3317
3318 static u32 sky2_get_msglevel(struct net_device *netdev)
3319 {
3320 struct sky2_port *sky2 = netdev_priv(netdev);
3321 return sky2->msg_enable;
3322 }
3323
3324 static int sky2_nway_reset(struct net_device *dev)
3325 {
3326 struct sky2_port *sky2 = netdev_priv(dev);
3327
3328 if (!netif_running(dev) || sky2->autoneg != AUTONEG_ENABLE)
3329 return -EINVAL;
3330
3331 sky2_phy_reinit(sky2);
3332 sky2_set_multicast(dev);
3333
3334 return 0;
3335 }
3336
3337 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3338 {
3339 struct sky2_hw *hw = sky2->hw;
3340 unsigned port = sky2->port;
3341 int i;
3342
3343 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
3344 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
3345 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
3346 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
3347
3348 for (i = 2; i < count; i++)
3349 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
3350 }
3351
3352 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3353 {
3354 struct sky2_port *sky2 = netdev_priv(netdev);
3355 sky2->msg_enable = value;
3356 }
3357
3358 static int sky2_get_sset_count(struct net_device *dev, int sset)
3359 {
3360 switch (sset) {
3361 case ETH_SS_STATS:
3362 return ARRAY_SIZE(sky2_stats);
3363 default:
3364 return -EOPNOTSUPP;
3365 }
3366 }
3367
3368 static void sky2_get_ethtool_stats(struct net_device *dev,
3369 struct ethtool_stats *stats, u64 * data)
3370 {
3371 struct sky2_port *sky2 = netdev_priv(dev);
3372
3373 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3374 }
3375
3376 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3377 {
3378 int i;
3379
3380 switch (stringset) {
3381 case ETH_SS_STATS:
3382 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3383 memcpy(data + i * ETH_GSTRING_LEN,
3384 sky2_stats[i].name, ETH_GSTRING_LEN);
3385 break;
3386 }
3387 }
3388
3389 static int sky2_set_mac_address(struct net_device *dev, void *p)
3390 {
3391 struct sky2_port *sky2 = netdev_priv(dev);
3392 struct sky2_hw *hw = sky2->hw;
3393 unsigned port = sky2->port;
3394 const struct sockaddr *addr = p;
3395
3396 if (!is_valid_ether_addr(addr->sa_data))
3397 return -EADDRNOTAVAIL;
3398
3399 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3400 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3401 dev->dev_addr, ETH_ALEN);
3402 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3403 dev->dev_addr, ETH_ALEN);
3404
3405 /* virtual address for data */
3406 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3407
3408 /* physical address: used for pause frames */
3409 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3410
3411 return 0;
3412 }
3413
3414 static void inline sky2_add_filter(u8 filter[8], const u8 *addr)
3415 {
3416 u32 bit;
3417
3418 bit = ether_crc(ETH_ALEN, addr) & 63;
3419 filter[bit >> 3] |= 1 << (bit & 7);
3420 }
3421
3422 static void sky2_set_multicast(struct net_device *dev)
3423 {
3424 struct sky2_port *sky2 = netdev_priv(dev);
3425 struct sky2_hw *hw = sky2->hw;
3426 unsigned port = sky2->port;
3427 struct dev_mc_list *list = dev->mc_list;
3428 u16 reg;
3429 u8 filter[8];
3430 int rx_pause;
3431 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3432
3433 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3434 memset(filter, 0, sizeof(filter));
3435
3436 reg = gma_read16(hw, port, GM_RX_CTRL);
3437 reg |= GM_RXCR_UCF_ENA;
3438
3439 if (dev->flags & IFF_PROMISC) /* promiscuous */
3440 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3441 else if (dev->flags & IFF_ALLMULTI)
3442 memset(filter, 0xff, sizeof(filter));
3443 else if (dev->mc_count == 0 && !rx_pause)
3444 reg &= ~GM_RXCR_MCF_ENA;
3445 else {
3446 int i;
3447 reg |= GM_RXCR_MCF_ENA;
3448
3449 if (rx_pause)
3450 sky2_add_filter(filter, pause_mc_addr);
3451
3452 for (i = 0; list && i < dev->mc_count; i++, list = list->next)
3453 sky2_add_filter(filter, list->dmi_addr);
3454 }
3455
3456 gma_write16(hw, port, GM_MC_ADDR_H1,
3457 (u16) filter[0] | ((u16) filter[1] << 8));
3458 gma_write16(hw, port, GM_MC_ADDR_H2,
3459 (u16) filter[2] | ((u16) filter[3] << 8));
3460 gma_write16(hw, port, GM_MC_ADDR_H3,
3461 (u16) filter[4] | ((u16) filter[5] << 8));
3462 gma_write16(hw, port, GM_MC_ADDR_H4,
3463 (u16) filter[6] | ((u16) filter[7] << 8));
3464
3465 gma_write16(hw, port, GM_RX_CTRL, reg);
3466 }
3467
3468 /* Can have one global because blinking is controlled by
3469 * ethtool and that is always under RTNL mutex
3470 */
3471 static void sky2_led(struct sky2_port *sky2, enum led_mode mode)
3472 {
3473 struct sky2_hw *hw = sky2->hw;
3474 unsigned port = sky2->port;
3475
3476 spin_lock_bh(&sky2->phy_lock);
3477 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3478 hw->chip_id == CHIP_ID_YUKON_EX ||
3479 hw->chip_id == CHIP_ID_YUKON_SUPR) {
3480 u16 pg;
3481 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3482 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3483
3484 switch (mode) {
3485 case MO_LED_OFF:
3486 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3487 PHY_M_LEDC_LOS_CTRL(8) |
3488 PHY_M_LEDC_INIT_CTRL(8) |
3489 PHY_M_LEDC_STA1_CTRL(8) |
3490 PHY_M_LEDC_STA0_CTRL(8));
3491 break;
3492 case MO_LED_ON:
3493 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3494 PHY_M_LEDC_LOS_CTRL(9) |
3495 PHY_M_LEDC_INIT_CTRL(9) |
3496 PHY_M_LEDC_STA1_CTRL(9) |
3497 PHY_M_LEDC_STA0_CTRL(9));
3498 break;
3499 case MO_LED_BLINK:
3500 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3501 PHY_M_LEDC_LOS_CTRL(0xa) |
3502 PHY_M_LEDC_INIT_CTRL(0xa) |
3503 PHY_M_LEDC_STA1_CTRL(0xa) |
3504 PHY_M_LEDC_STA0_CTRL(0xa));
3505 break;
3506 case MO_LED_NORM:
3507 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3508 PHY_M_LEDC_LOS_CTRL(1) |
3509 PHY_M_LEDC_INIT_CTRL(8) |
3510 PHY_M_LEDC_STA1_CTRL(7) |
3511 PHY_M_LEDC_STA0_CTRL(7));
3512 }
3513
3514 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3515 } else
3516 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3517 PHY_M_LED_MO_DUP(mode) |
3518 PHY_M_LED_MO_10(mode) |
3519 PHY_M_LED_MO_100(mode) |
3520 PHY_M_LED_MO_1000(mode) |
3521 PHY_M_LED_MO_RX(mode) |
3522 PHY_M_LED_MO_TX(mode));
3523
3524 spin_unlock_bh(&sky2->phy_lock);
3525 }
3526
3527 /* blink LED's for finding board */
3528 static int sky2_phys_id(struct net_device *dev, u32 data)
3529 {
3530 struct sky2_port *sky2 = netdev_priv(dev);
3531 unsigned int i;
3532
3533 if (data == 0)
3534 data = UINT_MAX;
3535
3536 for (i = 0; i < data; i++) {
3537 sky2_led(sky2, MO_LED_ON);
3538 if (msleep_interruptible(500))
3539 break;
3540 sky2_led(sky2, MO_LED_OFF);
3541 if (msleep_interruptible(500))
3542 break;
3543 }
3544 sky2_led(sky2, MO_LED_NORM);
3545
3546 return 0;
3547 }
3548
3549 static void sky2_get_pauseparam(struct net_device *dev,
3550 struct ethtool_pauseparam *ecmd)
3551 {
3552 struct sky2_port *sky2 = netdev_priv(dev);
3553
3554 switch (sky2->flow_mode) {
3555 case FC_NONE:
3556 ecmd->tx_pause = ecmd->rx_pause = 0;
3557 break;
3558 case FC_TX:
3559 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
3560 break;
3561 case FC_RX:
3562 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
3563 break;
3564 case FC_BOTH:
3565 ecmd->tx_pause = ecmd->rx_pause = 1;
3566 }
3567
3568 ecmd->autoneg = sky2->autoneg;
3569 }
3570
3571 static int sky2_set_pauseparam(struct net_device *dev,
3572 struct ethtool_pauseparam *ecmd)
3573 {
3574 struct sky2_port *sky2 = netdev_priv(dev);
3575
3576 sky2->autoneg = ecmd->autoneg;
3577 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
3578
3579 if (netif_running(dev))
3580 sky2_phy_reinit(sky2);
3581
3582 return 0;
3583 }
3584
3585 static int sky2_get_coalesce(struct net_device *dev,
3586 struct ethtool_coalesce *ecmd)
3587 {
3588 struct sky2_port *sky2 = netdev_priv(dev);
3589 struct sky2_hw *hw = sky2->hw;
3590
3591 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
3592 ecmd->tx_coalesce_usecs = 0;
3593 else {
3594 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
3595 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
3596 }
3597 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
3598
3599 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
3600 ecmd->rx_coalesce_usecs = 0;
3601 else {
3602 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
3603 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
3604 }
3605 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
3606
3607 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
3608 ecmd->rx_coalesce_usecs_irq = 0;
3609 else {
3610 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
3611 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
3612 }
3613
3614 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
3615
3616 return 0;
3617 }
3618
3619 /* Note: this affect both ports */
3620 static int sky2_set_coalesce(struct net_device *dev,
3621 struct ethtool_coalesce *ecmd)
3622 {
3623 struct sky2_port *sky2 = netdev_priv(dev);
3624 struct sky2_hw *hw = sky2->hw;
3625 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
3626
3627 if (ecmd->tx_coalesce_usecs > tmax ||
3628 ecmd->rx_coalesce_usecs > tmax ||
3629 ecmd->rx_coalesce_usecs_irq > tmax)
3630 return -EINVAL;
3631
3632 if (ecmd->tx_max_coalesced_frames >= TX_RING_SIZE-1)
3633 return -EINVAL;
3634 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
3635 return -EINVAL;
3636 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
3637 return -EINVAL;
3638
3639 if (ecmd->tx_coalesce_usecs == 0)
3640 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
3641 else {
3642 sky2_write32(hw, STAT_TX_TIMER_INI,
3643 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
3644 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3645 }
3646 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
3647
3648 if (ecmd->rx_coalesce_usecs == 0)
3649 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
3650 else {
3651 sky2_write32(hw, STAT_LEV_TIMER_INI,
3652 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
3653 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3654 }
3655 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
3656
3657 if (ecmd->rx_coalesce_usecs_irq == 0)
3658 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
3659 else {
3660 sky2_write32(hw, STAT_ISR_TIMER_INI,
3661 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
3662 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3663 }
3664 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
3665 return 0;
3666 }
3667
3668 static void sky2_get_ringparam(struct net_device *dev,
3669 struct ethtool_ringparam *ering)
3670 {
3671 struct sky2_port *sky2 = netdev_priv(dev);
3672
3673 ering->rx_max_pending = RX_MAX_PENDING;
3674 ering->rx_mini_max_pending = 0;
3675 ering->rx_jumbo_max_pending = 0;
3676 ering->tx_max_pending = TX_RING_SIZE - 1;
3677
3678 ering->rx_pending = sky2->rx_pending;
3679 ering->rx_mini_pending = 0;
3680 ering->rx_jumbo_pending = 0;
3681 ering->tx_pending = sky2->tx_pending;
3682 }
3683
3684 static int sky2_set_ringparam(struct net_device *dev,
3685 struct ethtool_ringparam *ering)
3686 {
3687 struct sky2_port *sky2 = netdev_priv(dev);
3688 int err = 0;
3689
3690 if (ering->rx_pending > RX_MAX_PENDING ||
3691 ering->rx_pending < 8 ||
3692 ering->tx_pending < MAX_SKB_TX_LE ||
3693 ering->tx_pending > TX_RING_SIZE - 1)
3694 return -EINVAL;
3695
3696 if (netif_running(dev))
3697 sky2_down(dev);
3698
3699 sky2->rx_pending = ering->rx_pending;
3700 sky2->tx_pending = ering->tx_pending;
3701
3702 if (netif_running(dev)) {
3703 err = sky2_up(dev);
3704 if (err)
3705 dev_close(dev);
3706 }
3707
3708 return err;
3709 }
3710
3711 static int sky2_get_regs_len(struct net_device *dev)
3712 {
3713 return 0x4000;
3714 }
3715
3716 /*
3717 * Returns copy of control register region
3718 * Note: ethtool_get_regs always provides full size (16k) buffer
3719 */
3720 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
3721 void *p)
3722 {
3723 const struct sky2_port *sky2 = netdev_priv(dev);
3724 const void __iomem *io = sky2->hw->regs;
3725 unsigned int b;
3726
3727 regs->version = 1;
3728
3729 for (b = 0; b < 128; b++) {
3730 /* This complicated switch statement is to make sure and
3731 * only access regions that are unreserved.
3732 * Some blocks are only valid on dual port cards.
3733 * and block 3 has some special diagnostic registers that
3734 * are poison.
3735 */
3736 switch (b) {
3737 case 3:
3738 /* skip diagnostic ram region */
3739 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
3740 break;
3741
3742 /* dual port cards only */
3743 case 5: /* Tx Arbiter 2 */
3744 case 9: /* RX2 */
3745 case 14 ... 15: /* TX2 */
3746 case 17: case 19: /* Ram Buffer 2 */
3747 case 22 ... 23: /* Tx Ram Buffer 2 */
3748 case 25: /* Rx MAC Fifo 1 */
3749 case 27: /* Tx MAC Fifo 2 */
3750 case 31: /* GPHY 2 */
3751 case 40 ... 47: /* Pattern Ram 2 */
3752 case 52: case 54: /* TCP Segmentation 2 */
3753 case 112 ... 116: /* GMAC 2 */
3754 if (sky2->hw->ports == 1)
3755 goto reserved;
3756 /* fall through */
3757 case 0: /* Control */
3758 case 2: /* Mac address */
3759 case 4: /* Tx Arbiter 1 */
3760 case 7: /* PCI express reg */
3761 case 8: /* RX1 */
3762 case 12 ... 13: /* TX1 */
3763 case 16: case 18:/* Rx Ram Buffer 1 */
3764 case 20 ... 21: /* Tx Ram Buffer 1 */
3765 case 24: /* Rx MAC Fifo 1 */
3766 case 26: /* Tx MAC Fifo 1 */
3767 case 28 ... 29: /* Descriptor and status unit */
3768 case 30: /* GPHY 1*/
3769 case 32 ... 39: /* Pattern Ram 1 */
3770 case 48: case 50: /* TCP Segmentation 1 */
3771 case 56 ... 60: /* PCI space */
3772 case 80 ... 84: /* GMAC 1 */
3773 memcpy_fromio(p, io, 128);
3774 break;
3775 default:
3776 reserved:
3777 memset(p, 0, 128);
3778 }
3779
3780 p += 128;
3781 io += 128;
3782 }
3783 }
3784
3785 /* In order to do Jumbo packets on these chips, need to turn off the
3786 * transmit store/forward. Therefore checksum offload won't work.
3787 */
3788 static int no_tx_offload(struct net_device *dev)
3789 {
3790 const struct sky2_port *sky2 = netdev_priv(dev);
3791 const struct sky2_hw *hw = sky2->hw;
3792
3793 return dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U;
3794 }
3795
3796 static int sky2_set_tx_csum(struct net_device *dev, u32 data)
3797 {
3798 if (data && no_tx_offload(dev))
3799 return -EINVAL;
3800
3801 return ethtool_op_set_tx_csum(dev, data);
3802 }
3803
3804
3805 static int sky2_set_tso(struct net_device *dev, u32 data)
3806 {
3807 if (data && no_tx_offload(dev))
3808 return -EINVAL;
3809
3810 return ethtool_op_set_tso(dev, data);
3811 }
3812
3813 static int sky2_get_eeprom_len(struct net_device *dev)
3814 {
3815 struct sky2_port *sky2 = netdev_priv(dev);
3816 struct sky2_hw *hw = sky2->hw;
3817 u16 reg2;
3818
3819 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
3820 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
3821 }
3822
3823 static int sky2_vpd_wait(const struct sky2_hw *hw, int cap, u16 busy)
3824 {
3825 unsigned long start = jiffies;
3826
3827 while ( (sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F) == busy) {
3828 /* Can take up to 10.6 ms for write */
3829 if (time_after(jiffies, start + HZ/4)) {
3830 dev_err(&hw->pdev->dev, PFX "VPD cycle timed out");
3831 return -ETIMEDOUT;
3832 }
3833 mdelay(1);
3834 }
3835
3836 return 0;
3837 }
3838
3839 static int sky2_vpd_read(struct sky2_hw *hw, int cap, void *data,
3840 u16 offset, size_t length)
3841 {
3842 int rc = 0;
3843
3844 while (length > 0) {
3845 u32 val;
3846
3847 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
3848 rc = sky2_vpd_wait(hw, cap, 0);
3849 if (rc)
3850 break;
3851
3852 val = sky2_pci_read32(hw, cap + PCI_VPD_DATA);
3853
3854 memcpy(data, &val, min(sizeof(val), length));
3855 offset += sizeof(u32);
3856 data += sizeof(u32);
3857 length -= sizeof(u32);
3858 }
3859
3860 return rc;
3861 }
3862
3863 static int sky2_vpd_write(struct sky2_hw *hw, int cap, const void *data,
3864 u16 offset, unsigned int length)
3865 {
3866 unsigned int i;
3867 int rc = 0;
3868
3869 for (i = 0; i < length; i += sizeof(u32)) {
3870 u32 val = *(u32 *)(data + i);
3871
3872 sky2_pci_write32(hw, cap + PCI_VPD_DATA, val);
3873 sky2_pci_write32(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
3874
3875 rc = sky2_vpd_wait(hw, cap, PCI_VPD_ADDR_F);
3876 if (rc)
3877 break;
3878 }
3879 return rc;
3880 }
3881
3882 static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
3883 u8 *data)
3884 {
3885 struct sky2_port *sky2 = netdev_priv(dev);
3886 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
3887
3888 if (!cap)
3889 return -EINVAL;
3890
3891 eeprom->magic = SKY2_EEPROM_MAGIC;
3892
3893 return sky2_vpd_read(sky2->hw, cap, data, eeprom->offset, eeprom->len);
3894 }
3895
3896 static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
3897 u8 *data)
3898 {
3899 struct sky2_port *sky2 = netdev_priv(dev);
3900 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
3901
3902 if (!cap)
3903 return -EINVAL;
3904
3905 if (eeprom->magic != SKY2_EEPROM_MAGIC)
3906 return -EINVAL;
3907
3908 /* Partial writes not supported */
3909 if ((eeprom->offset & 3) || (eeprom->len & 3))
3910 return -EINVAL;
3911
3912 return sky2_vpd_write(sky2->hw, cap, data, eeprom->offset, eeprom->len);
3913 }
3914
3915
3916 static const struct ethtool_ops sky2_ethtool_ops = {
3917 .get_settings = sky2_get_settings,
3918 .set_settings = sky2_set_settings,
3919 .get_drvinfo = sky2_get_drvinfo,
3920 .get_wol = sky2_get_wol,
3921 .set_wol = sky2_set_wol,
3922 .get_msglevel = sky2_get_msglevel,
3923 .set_msglevel = sky2_set_msglevel,
3924 .nway_reset = sky2_nway_reset,
3925 .get_regs_len = sky2_get_regs_len,
3926 .get_regs = sky2_get_regs,
3927 .get_link = ethtool_op_get_link,
3928 .get_eeprom_len = sky2_get_eeprom_len,
3929 .get_eeprom = sky2_get_eeprom,
3930 .set_eeprom = sky2_set_eeprom,
3931 .set_sg = ethtool_op_set_sg,
3932 .set_tx_csum = sky2_set_tx_csum,
3933 .set_tso = sky2_set_tso,
3934 .get_rx_csum = sky2_get_rx_csum,
3935 .set_rx_csum = sky2_set_rx_csum,
3936 .get_strings = sky2_get_strings,
3937 .get_coalesce = sky2_get_coalesce,
3938 .set_coalesce = sky2_set_coalesce,
3939 .get_ringparam = sky2_get_ringparam,
3940 .set_ringparam = sky2_set_ringparam,
3941 .get_pauseparam = sky2_get_pauseparam,
3942 .set_pauseparam = sky2_set_pauseparam,
3943 .phys_id = sky2_phys_id,
3944 .get_sset_count = sky2_get_sset_count,
3945 .get_ethtool_stats = sky2_get_ethtool_stats,
3946 };
3947
3948 #ifdef CONFIG_SKY2_DEBUG
3949
3950 static struct dentry *sky2_debug;
3951
3952
3953 /*
3954 * Read and parse the first part of Vital Product Data
3955 */
3956 #define VPD_SIZE 128
3957 #define VPD_MAGIC 0x82
3958
3959 static const struct vpd_tag {
3960 char tag[2];
3961 char *label;
3962 } vpd_tags[] = {
3963 { "PN", "Part Number" },
3964 { "EC", "Engineering Level" },
3965 { "MN", "Manufacturer" },
3966 { "SN", "Serial Number" },
3967 { "YA", "Asset Tag" },
3968 { "VL", "First Error Log Message" },
3969 { "VF", "Second Error Log Message" },
3970 { "VB", "Boot Agent ROM Configuration" },
3971 { "VE", "EFI UNDI Configuration" },
3972 };
3973
3974 static void sky2_show_vpd(struct seq_file *seq, struct sky2_hw *hw)
3975 {
3976 size_t vpd_size;
3977 loff_t offs;
3978 u8 len;
3979 unsigned char *buf;
3980 u16 reg2;
3981
3982 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
3983 vpd_size = 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
3984
3985 seq_printf(seq, "%s Product Data\n", pci_name(hw->pdev));
3986 buf = kmalloc(vpd_size, GFP_KERNEL);
3987 if (!buf) {
3988 seq_puts(seq, "no memory!\n");
3989 return;
3990 }
3991
3992 if (pci_read_vpd(hw->pdev, 0, vpd_size, buf) < 0) {
3993 seq_puts(seq, "VPD read failed\n");
3994 goto out;
3995 }
3996
3997 if (buf[0] != VPD_MAGIC) {
3998 seq_printf(seq, "VPD tag mismatch: %#x\n", buf[0]);
3999 goto out;
4000 }
4001 len = buf[1];
4002 if (len == 0 || len > vpd_size - 4) {
4003 seq_printf(seq, "Invalid id length: %d\n", len);
4004 goto out;
4005 }
4006
4007 seq_printf(seq, "%.*s\n", len, buf + 3);
4008 offs = len + 3;
4009
4010 while (offs < vpd_size - 4) {
4011 int i;
4012
4013 if (!memcmp("RW", buf + offs, 2)) /* end marker */
4014 break;
4015 len = buf[offs + 2];
4016 if (offs + len + 3 >= vpd_size)
4017 break;
4018
4019 for (i = 0; i < ARRAY_SIZE(vpd_tags); i++) {
4020 if (!memcmp(vpd_tags[i].tag, buf + offs, 2)) {
4021 seq_printf(seq, " %s: %.*s\n",
4022 vpd_tags[i].label, len, buf + offs + 3);
4023 break;
4024 }
4025 }
4026 offs += len + 3;
4027 }
4028 out:
4029 kfree(buf);
4030 }
4031
4032 static int sky2_debug_show(struct seq_file *seq, void *v)
4033 {
4034 struct net_device *dev = seq->private;
4035 const struct sky2_port *sky2 = netdev_priv(dev);
4036 struct sky2_hw *hw = sky2->hw;
4037 unsigned port = sky2->port;
4038 unsigned idx, last;
4039 int sop;
4040
4041 sky2_show_vpd(seq, hw);
4042
4043 seq_printf(seq, "\nIRQ src=%x mask=%x control=%x\n",
4044 sky2_read32(hw, B0_ISRC),
4045 sky2_read32(hw, B0_IMSK),
4046 sky2_read32(hw, B0_Y2_SP_ICR));
4047
4048 if (!netif_running(dev)) {
4049 seq_printf(seq, "network not running\n");
4050 return 0;
4051 }
4052
4053 napi_disable(&hw->napi);
4054 last = sky2_read16(hw, STAT_PUT_IDX);
4055
4056 if (hw->st_idx == last)
4057 seq_puts(seq, "Status ring (empty)\n");
4058 else {
4059 seq_puts(seq, "Status ring\n");
4060 for (idx = hw->st_idx; idx != last && idx < STATUS_RING_SIZE;
4061 idx = RING_NEXT(idx, STATUS_RING_SIZE)) {
4062 const struct sky2_status_le *le = hw->st_le + idx;
4063 seq_printf(seq, "[%d] %#x %d %#x\n",
4064 idx, le->opcode, le->length, le->status);
4065 }
4066 seq_puts(seq, "\n");
4067 }
4068
4069 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
4070 sky2->tx_cons, sky2->tx_prod,
4071 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
4072 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
4073
4074 /* Dump contents of tx ring */
4075 sop = 1;
4076 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < TX_RING_SIZE;
4077 idx = RING_NEXT(idx, TX_RING_SIZE)) {
4078 const struct sky2_tx_le *le = sky2->tx_le + idx;
4079 u32 a = le32_to_cpu(le->addr);
4080
4081 if (sop)
4082 seq_printf(seq, "%u:", idx);
4083 sop = 0;
4084
4085 switch(le->opcode & ~HW_OWNER) {
4086 case OP_ADDR64:
4087 seq_printf(seq, " %#x:", a);
4088 break;
4089 case OP_LRGLEN:
4090 seq_printf(seq, " mtu=%d", a);
4091 break;
4092 case OP_VLAN:
4093 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
4094 break;
4095 case OP_TCPLISW:
4096 seq_printf(seq, " csum=%#x", a);
4097 break;
4098 case OP_LARGESEND:
4099 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
4100 break;
4101 case OP_PACKET:
4102 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
4103 break;
4104 case OP_BUFFER:
4105 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
4106 break;
4107 default:
4108 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
4109 a, le16_to_cpu(le->length));
4110 }
4111
4112 if (le->ctrl & EOP) {
4113 seq_putc(seq, '\n');
4114 sop = 1;
4115 }
4116 }
4117
4118 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
4119 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
4120 last = sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
4121 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
4122
4123 sky2_read32(hw, B0_Y2_SP_LISR);
4124 napi_enable(&hw->napi);
4125 return 0;
4126 }
4127
4128 static int sky2_debug_open(struct inode *inode, struct file *file)
4129 {
4130 return single_open(file, sky2_debug_show, inode->i_private);
4131 }
4132
4133 static const struct file_operations sky2_debug_fops = {
4134 .owner = THIS_MODULE,
4135 .open = sky2_debug_open,
4136 .read = seq_read,
4137 .llseek = seq_lseek,
4138 .release = single_release,
4139 };
4140
4141 /*
4142 * Use network device events to create/remove/rename
4143 * debugfs file entries
4144 */
4145 static int sky2_device_event(struct notifier_block *unused,
4146 unsigned long event, void *ptr)
4147 {
4148 struct net_device *dev = ptr;
4149 struct sky2_port *sky2 = netdev_priv(dev);
4150
4151 if (dev->netdev_ops->ndo_open != sky2_up || !sky2_debug)
4152 return NOTIFY_DONE;
4153
4154 switch(event) {
4155 case NETDEV_CHANGENAME:
4156 if (sky2->debugfs) {
4157 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
4158 sky2_debug, dev->name);
4159 }
4160 break;
4161
4162 case NETDEV_GOING_DOWN:
4163 if (sky2->debugfs) {
4164 printk(KERN_DEBUG PFX "%s: remove debugfs\n",
4165 dev->name);
4166 debugfs_remove(sky2->debugfs);
4167 sky2->debugfs = NULL;
4168 }
4169 break;
4170
4171 case NETDEV_UP:
4172 sky2->debugfs = debugfs_create_file(dev->name, S_IRUGO,
4173 sky2_debug, dev,
4174 &sky2_debug_fops);
4175 if (IS_ERR(sky2->debugfs))
4176 sky2->debugfs = NULL;
4177 }
4178
4179 return NOTIFY_DONE;
4180 }
4181
4182 static struct notifier_block sky2_notifier = {
4183 .notifier_call = sky2_device_event,
4184 };
4185
4186
4187 static __init void sky2_debug_init(void)
4188 {
4189 struct dentry *ent;
4190
4191 ent = debugfs_create_dir("sky2", NULL);
4192 if (!ent || IS_ERR(ent))
4193 return;
4194
4195 sky2_debug = ent;
4196 register_netdevice_notifier(&sky2_notifier);
4197 }
4198
4199 static __exit void sky2_debug_cleanup(void)
4200 {
4201 if (sky2_debug) {
4202 unregister_netdevice_notifier(&sky2_notifier);
4203 debugfs_remove(sky2_debug);
4204 sky2_debug = NULL;
4205 }
4206 }
4207
4208 #else
4209 #define sky2_debug_init()
4210 #define sky2_debug_cleanup()
4211 #endif
4212
4213 /* Two copies of network device operations to handle special case of
4214 not allowing netpoll on second port */
4215 static const struct net_device_ops sky2_netdev_ops[2] = {
4216 {
4217 .ndo_open = sky2_up,
4218 .ndo_stop = sky2_down,
4219 .ndo_start_xmit = sky2_xmit_frame,
4220 .ndo_do_ioctl = sky2_ioctl,
4221 .ndo_validate_addr = eth_validate_addr,
4222 .ndo_set_mac_address = sky2_set_mac_address,
4223 .ndo_set_multicast_list = sky2_set_multicast,
4224 .ndo_change_mtu = sky2_change_mtu,
4225 .ndo_tx_timeout = sky2_tx_timeout,
4226 #ifdef SKY2_VLAN_TAG_USED
4227 .ndo_vlan_rx_register = sky2_vlan_rx_register,
4228 #endif
4229 #ifdef CONFIG_NET_POLL_CONTROLLER
4230 .ndo_poll_controller = sky2_netpoll,
4231 #endif
4232 },
4233 {
4234 .ndo_open = sky2_up,
4235 .ndo_stop = sky2_down,
4236 .ndo_start_xmit = sky2_xmit_frame,
4237 .ndo_do_ioctl = sky2_ioctl,
4238 .ndo_validate_addr = eth_validate_addr,
4239 .ndo_set_mac_address = sky2_set_mac_address,
4240 .ndo_set_multicast_list = sky2_set_multicast,
4241 .ndo_change_mtu = sky2_change_mtu,
4242 .ndo_tx_timeout = sky2_tx_timeout,
4243 #ifdef SKY2_VLAN_TAG_USED
4244 .ndo_vlan_rx_register = sky2_vlan_rx_register,
4245 #endif
4246 },
4247 };
4248
4249 /* Initialize network device */
4250 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
4251 unsigned port,
4252 int highmem, int wol)
4253 {
4254 struct sky2_port *sky2;
4255 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
4256
4257 if (!dev) {
4258 dev_err(&hw->pdev->dev, "etherdev alloc failed\n");
4259 return NULL;
4260 }
4261
4262 SET_NETDEV_DEV(dev, &hw->pdev->dev);
4263 dev->irq = hw->pdev->irq;
4264 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
4265 dev->watchdog_timeo = TX_WATCHDOG;
4266 dev->netdev_ops = &sky2_netdev_ops[port];
4267
4268 sky2 = netdev_priv(dev);
4269 sky2->netdev = dev;
4270 sky2->hw = hw;
4271 sky2->msg_enable = netif_msg_init(debug, default_msg);
4272
4273 /* Auto speed and flow control */
4274 sky2->autoneg = AUTONEG_ENABLE;
4275 sky2->flow_mode = FC_BOTH;
4276
4277 sky2->duplex = -1;
4278 sky2->speed = -1;
4279 sky2->advertising = sky2_supported_modes(hw);
4280 sky2->rx_csum = (hw->chip_id != CHIP_ID_YUKON_XL);
4281 sky2->wol = wol;
4282
4283 spin_lock_init(&sky2->phy_lock);
4284 sky2->tx_pending = TX_DEF_PENDING;
4285 sky2->rx_pending = RX_DEF_PENDING;
4286
4287 hw->dev[port] = dev;
4288
4289 sky2->port = port;
4290
4291 dev->features |= NETIF_F_TSO | NETIF_F_IP_CSUM | NETIF_F_SG;
4292 if (highmem)
4293 dev->features |= NETIF_F_HIGHDMA;
4294
4295 #ifdef SKY2_VLAN_TAG_USED
4296 /* The workaround for FE+ status conflicts with VLAN tag detection. */
4297 if (!(sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
4298 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0)) {
4299 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
4300 }
4301 #endif
4302
4303 /* read the mac address */
4304 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
4305 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
4306
4307 return dev;
4308 }
4309
4310 static void __devinit sky2_show_addr(struct net_device *dev)
4311 {
4312 const struct sky2_port *sky2 = netdev_priv(dev);
4313
4314 if (netif_msg_probe(sky2))
4315 printk(KERN_INFO PFX "%s: addr %pM\n",
4316 dev->name, dev->dev_addr);
4317 }
4318
4319 /* Handle software interrupt used during MSI test */
4320 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
4321 {
4322 struct sky2_hw *hw = dev_id;
4323 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4324
4325 if (status == 0)
4326 return IRQ_NONE;
4327
4328 if (status & Y2_IS_IRQ_SW) {
4329 hw->flags |= SKY2_HW_USE_MSI;
4330 wake_up(&hw->msi_wait);
4331 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4332 }
4333 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4334
4335 return IRQ_HANDLED;
4336 }
4337
4338 /* Test interrupt path by forcing a a software IRQ */
4339 static int __devinit sky2_test_msi(struct sky2_hw *hw)
4340 {
4341 struct pci_dev *pdev = hw->pdev;
4342 int err;
4343
4344 init_waitqueue_head (&hw->msi_wait);
4345
4346 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4347
4348 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4349 if (err) {
4350 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4351 return err;
4352 }
4353
4354 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4355 sky2_read8(hw, B0_CTST);
4356
4357 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4358
4359 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4360 /* MSI test failed, go back to INTx mode */
4361 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4362 "switching to INTx mode.\n");
4363
4364 err = -EOPNOTSUPP;
4365 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4366 }
4367
4368 sky2_write32(hw, B0_IMSK, 0);
4369 sky2_read32(hw, B0_IMSK);
4370
4371 free_irq(pdev->irq, hw);
4372
4373 return err;
4374 }
4375
4376 /* This driver supports yukon2 chipset only */
4377 static const char *sky2_name(u8 chipid, char *buf, int sz)
4378 {
4379 const char *name[] = {
4380 "XL", /* 0xb3 */
4381 "EC Ultra", /* 0xb4 */
4382 "Extreme", /* 0xb5 */
4383 "EC", /* 0xb6 */
4384 "FE", /* 0xb7 */
4385 "FE+", /* 0xb8 */
4386 "Supreme", /* 0xb9 */
4387 "UL 2", /* 0xba */
4388 };
4389
4390 if (chipid >= CHIP_ID_YUKON_XL && chipid < CHIP_ID_YUKON_UL_2)
4391 strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
4392 else
4393 snprintf(buf, sz, "(chip %#x)", chipid);
4394 return buf;
4395 }
4396
4397 static int __devinit sky2_probe(struct pci_dev *pdev,
4398 const struct pci_device_id *ent)
4399 {
4400 struct net_device *dev;
4401 struct sky2_hw *hw;
4402 int err, using_dac = 0, wol_default;
4403 u32 reg;
4404 char buf1[16];
4405
4406 err = pci_enable_device(pdev);
4407 if (err) {
4408 dev_err(&pdev->dev, "cannot enable PCI device\n");
4409 goto err_out;
4410 }
4411
4412 /* Get configuration information
4413 * Note: only regular PCI config access once to test for HW issues
4414 * other PCI access through shared memory for speed and to
4415 * avoid MMCONFIG problems.
4416 */
4417 err = pci_read_config_dword(pdev, PCI_DEV_REG2, &reg);
4418 if (err) {
4419 dev_err(&pdev->dev, "PCI read config failed\n");
4420 goto err_out;
4421 }
4422
4423 if (~reg == 0) {
4424 dev_err(&pdev->dev, "PCI configuration read error\n");
4425 goto err_out;
4426 }
4427
4428 err = pci_request_regions(pdev, DRV_NAME);
4429 if (err) {
4430 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4431 goto err_out_disable;
4432 }
4433
4434 pci_set_master(pdev);
4435
4436 if (sizeof(dma_addr_t) > sizeof(u32) &&
4437 !(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))) {
4438 using_dac = 1;
4439 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4440 if (err < 0) {
4441 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4442 "for consistent allocations\n");
4443 goto err_out_free_regions;
4444 }
4445 } else {
4446 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4447 if (err) {
4448 dev_err(&pdev->dev, "no usable DMA configuration\n");
4449 goto err_out_free_regions;
4450 }
4451 }
4452
4453
4454 #ifdef __BIG_ENDIAN
4455 /* The sk98lin vendor driver uses hardware byte swapping but
4456 * this driver uses software swapping.
4457 */
4458 reg &= ~PCI_REV_DESC;
4459 err = pci_write_config_dword(pdev,PCI_DEV_REG2, reg);
4460 if (err) {
4461 dev_err(&pdev->dev, "PCI write config failed\n");
4462 goto err_out_free_regions;
4463 }
4464 #endif
4465
4466 wol_default = device_may_wakeup(&pdev->dev) ? WAKE_MAGIC : 0;
4467
4468 err = -ENOMEM;
4469 hw = kzalloc(sizeof(*hw), GFP_KERNEL);
4470 if (!hw) {
4471 dev_err(&pdev->dev, "cannot allocate hardware struct\n");
4472 goto err_out_free_regions;
4473 }
4474
4475 hw->pdev = pdev;
4476
4477 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
4478 if (!hw->regs) {
4479 dev_err(&pdev->dev, "cannot map device registers\n");
4480 goto err_out_free_hw;
4481 }
4482
4483 /* ring for status responses */
4484 hw->st_le = pci_alloc_consistent(pdev, STATUS_LE_BYTES, &hw->st_dma);
4485 if (!hw->st_le)
4486 goto err_out_iounmap;
4487
4488 err = sky2_init(hw);
4489 if (err)
4490 goto err_out_iounmap;
4491
4492 dev_info(&pdev->dev, "Yukon-2 %s chip revision %d\n",
4493 sky2_name(hw->chip_id, buf1, sizeof(buf1)), hw->chip_rev);
4494
4495 sky2_reset(hw);
4496
4497 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
4498 if (!dev) {
4499 err = -ENOMEM;
4500 goto err_out_free_pci;
4501 }
4502
4503 if (!disable_msi && pci_enable_msi(pdev) == 0) {
4504 err = sky2_test_msi(hw);
4505 if (err == -EOPNOTSUPP)
4506 pci_disable_msi(pdev);
4507 else if (err)
4508 goto err_out_free_netdev;
4509 }
4510
4511 err = register_netdev(dev);
4512 if (err) {
4513 dev_err(&pdev->dev, "cannot register net device\n");
4514 goto err_out_free_netdev;
4515 }
4516
4517 netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
4518
4519 err = request_irq(pdev->irq, sky2_intr,
4520 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
4521 dev->name, hw);
4522 if (err) {
4523 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4524 goto err_out_unregister;
4525 }
4526 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4527 napi_enable(&hw->napi);
4528
4529 sky2_show_addr(dev);
4530
4531 if (hw->ports > 1) {
4532 struct net_device *dev1;
4533
4534 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
4535 if (!dev1)
4536 dev_warn(&pdev->dev, "allocation for second device failed\n");
4537 else if ((err = register_netdev(dev1))) {
4538 dev_warn(&pdev->dev,
4539 "register of second port failed (%d)\n", err);
4540 hw->dev[1] = NULL;
4541 free_netdev(dev1);
4542 } else
4543 sky2_show_addr(dev1);
4544 }
4545
4546 setup_timer(&hw->watchdog_timer, sky2_watchdog, (unsigned long) hw);
4547 INIT_WORK(&hw->restart_work, sky2_restart);
4548
4549 pci_set_drvdata(pdev, hw);
4550
4551 return 0;
4552
4553 err_out_unregister:
4554 if (hw->flags & SKY2_HW_USE_MSI)
4555 pci_disable_msi(pdev);
4556 unregister_netdev(dev);
4557 err_out_free_netdev:
4558 free_netdev(dev);
4559 err_out_free_pci:
4560 sky2_write8(hw, B0_CTST, CS_RST_SET);
4561 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4562 err_out_iounmap:
4563 iounmap(hw->regs);
4564 err_out_free_hw:
4565 kfree(hw);
4566 err_out_free_regions:
4567 pci_release_regions(pdev);
4568 err_out_disable:
4569 pci_disable_device(pdev);
4570 err_out:
4571 pci_set_drvdata(pdev, NULL);
4572 return err;
4573 }
4574
4575 static void __devexit sky2_remove(struct pci_dev *pdev)
4576 {
4577 struct sky2_hw *hw = pci_get_drvdata(pdev);
4578 int i;
4579
4580 if (!hw)
4581 return;
4582
4583 del_timer_sync(&hw->watchdog_timer);
4584 cancel_work_sync(&hw->restart_work);
4585
4586 for (i = hw->ports-1; i >= 0; --i)
4587 unregister_netdev(hw->dev[i]);
4588
4589 sky2_write32(hw, B0_IMSK, 0);
4590
4591 sky2_power_aux(hw);
4592
4593 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
4594 sky2_write8(hw, B0_CTST, CS_RST_SET);
4595 sky2_read8(hw, B0_CTST);
4596
4597 free_irq(pdev->irq, hw);
4598 if (hw->flags & SKY2_HW_USE_MSI)
4599 pci_disable_msi(pdev);
4600 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4601 pci_release_regions(pdev);
4602 pci_disable_device(pdev);
4603
4604 for (i = hw->ports-1; i >= 0; --i)
4605 free_netdev(hw->dev[i]);
4606
4607 iounmap(hw->regs);
4608 kfree(hw);
4609
4610 pci_set_drvdata(pdev, NULL);
4611 }
4612
4613 #ifdef CONFIG_PM
4614 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
4615 {
4616 struct sky2_hw *hw = pci_get_drvdata(pdev);
4617 int i, wol = 0;
4618
4619 if (!hw)
4620 return 0;
4621
4622 del_timer_sync(&hw->watchdog_timer);
4623 cancel_work_sync(&hw->restart_work);
4624
4625 for (i = 0; i < hw->ports; i++) {
4626 struct net_device *dev = hw->dev[i];
4627 struct sky2_port *sky2 = netdev_priv(dev);
4628
4629 netif_device_detach(dev);
4630 if (netif_running(dev))
4631 sky2_down(dev);
4632
4633 if (sky2->wol)
4634 sky2_wol_init(sky2);
4635
4636 wol |= sky2->wol;
4637 }
4638
4639 sky2_write32(hw, B0_IMSK, 0);
4640 napi_disable(&hw->napi);
4641 sky2_power_aux(hw);
4642
4643 pci_save_state(pdev);
4644 pci_enable_wake(pdev, pci_choose_state(pdev, state), wol);
4645 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4646
4647 return 0;
4648 }
4649
4650 static int sky2_resume(struct pci_dev *pdev)
4651 {
4652 struct sky2_hw *hw = pci_get_drvdata(pdev);
4653 int i, err;
4654
4655 if (!hw)
4656 return 0;
4657
4658 err = pci_set_power_state(pdev, PCI_D0);
4659 if (err)
4660 goto out;
4661
4662 err = pci_restore_state(pdev);
4663 if (err)
4664 goto out;
4665
4666 pci_enable_wake(pdev, PCI_D0, 0);
4667
4668 /* Re-enable all clocks */
4669 if (hw->chip_id == CHIP_ID_YUKON_EX ||
4670 hw->chip_id == CHIP_ID_YUKON_EC_U ||
4671 hw->chip_id == CHIP_ID_YUKON_FE_P)
4672 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
4673
4674 sky2_reset(hw);
4675 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4676 napi_enable(&hw->napi);
4677
4678 for (i = 0; i < hw->ports; i++) {
4679 struct net_device *dev = hw->dev[i];
4680
4681 netif_device_attach(dev);
4682 if (netif_running(dev)) {
4683 err = sky2_up(dev);
4684 if (err) {
4685 printk(KERN_ERR PFX "%s: could not up: %d\n",
4686 dev->name, err);
4687 rtnl_lock();
4688 dev_close(dev);
4689 rtnl_unlock();
4690 goto out;
4691 }
4692 }
4693 }
4694
4695 return 0;
4696 out:
4697 dev_err(&pdev->dev, "resume failed (%d)\n", err);
4698 pci_disable_device(pdev);
4699 return err;
4700 }
4701 #endif
4702
4703 static void sky2_shutdown(struct pci_dev *pdev)
4704 {
4705 struct sky2_hw *hw = pci_get_drvdata(pdev);
4706 int i, wol = 0;
4707
4708 if (!hw)
4709 return;
4710
4711 del_timer_sync(&hw->watchdog_timer);
4712
4713 for (i = 0; i < hw->ports; i++) {
4714 struct net_device *dev = hw->dev[i];
4715 struct sky2_port *sky2 = netdev_priv(dev);
4716
4717 if (sky2->wol) {
4718 wol = 1;
4719 sky2_wol_init(sky2);
4720 }
4721 }
4722
4723 if (wol)
4724 sky2_power_aux(hw);
4725
4726 pci_enable_wake(pdev, PCI_D3hot, wol);
4727 pci_enable_wake(pdev, PCI_D3cold, wol);
4728
4729 pci_disable_device(pdev);
4730 pci_set_power_state(pdev, PCI_D3hot);
4731 }
4732
4733 static struct pci_driver sky2_driver = {
4734 .name = DRV_NAME,
4735 .id_table = sky2_id_table,
4736 .probe = sky2_probe,
4737 .remove = __devexit_p(sky2_remove),
4738 #ifdef CONFIG_PM
4739 .suspend = sky2_suspend,
4740 .resume = sky2_resume,
4741 #endif
4742 .shutdown = sky2_shutdown,
4743 };
4744
4745 static int __init sky2_init_module(void)
4746 {
4747 pr_info(PFX "driver version " DRV_VERSION "\n");
4748
4749 sky2_debug_init();
4750 return pci_register_driver(&sky2_driver);
4751 }
4752
4753 static void __exit sky2_cleanup_module(void)
4754 {
4755 pci_unregister_driver(&sky2_driver);
4756 sky2_debug_cleanup();
4757 }
4758
4759 module_init(sky2_init_module);
4760 module_exit(sky2_cleanup_module);
4761
4762 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
4763 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
4764 MODULE_LICENSE("GPL");
4765 MODULE_VERSION(DRV_VERSION);
x86 "subsystem" repository