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sky2: enable PCI config writes
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / sky2.c
blob4f41a9445961a915aa9b7dc943785de20a32df3f
1 /*
2 * New driver for Marvell Yukon 2 chipset.
3 * Based on earlier sk98lin, and skge driver.
4 *
5 * This driver intentionally does not support all the features
6 * of the original driver such as link fail-over and link management because
7 * those should be done at higher levels.
8 *
9 * Copyright (C) 2005 Stephen Hemminger <shemminger@osdl.org>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25 #include <linux/crc32.h>
26 #include <linux/kernel.h>
27 #include <linux/version.h>
28 #include <linux/module.h>
29 #include <linux/netdevice.h>
30 #include <linux/dma-mapping.h>
31 #include <linux/etherdevice.h>
32 #include <linux/ethtool.h>
33 #include <linux/pci.h>
34 #include <linux/aer.h>
35 #include <linux/ip.h>
36 #include <net/ip.h>
37 #include <linux/tcp.h>
38 #include <linux/in.h>
39 #include <linux/delay.h>
40 #include <linux/workqueue.h>
41 #include <linux/if_vlan.h>
42 #include <linux/prefetch.h>
43 #include <linux/debugfs.h>
44 #include <linux/mii.h>
45
46 #include <asm/irq.h>
47
48 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
49 #define SKY2_VLAN_TAG_USED 1
50 #endif
51
52 #include "sky2.h"
53
54 #define DRV_NAME "sky2"
55 #define DRV_VERSION "1.19"
56 #define PFX DRV_NAME " "
57
58 /*
59 * The Yukon II chipset takes 64 bit command blocks (called list elements)
60 * that are organized into three (receive, transmit, status) different rings
61 * similar to Tigon3.
62 */
63
64 #define RX_LE_SIZE 1024
65 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
66 #define RX_MAX_PENDING (RX_LE_SIZE/6 - 2)
67 #define RX_DEF_PENDING RX_MAX_PENDING
68 #define RX_SKB_ALIGN 8
69
70 #define TX_RING_SIZE 512
71 #define TX_DEF_PENDING (TX_RING_SIZE - 1)
72 #define TX_MIN_PENDING 64
73 #define MAX_SKB_TX_LE (4 + (sizeof(dma_addr_t)/sizeof(u32))*MAX_SKB_FRAGS)
74
75 #define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
76 #define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
77 #define TX_WATCHDOG (5 * HZ)
78 #define NAPI_WEIGHT 64
79 #define PHY_RETRIES 1000
80
81 #define SKY2_EEPROM_MAGIC 0x9955aabb
82
83
84 #define RING_NEXT(x,s) (((x)+1) & ((s)-1))
85
86 static const u32 default_msg =
87 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
88 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
89 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
90
91 static int debug = -1; /* defaults above */
92 module_param(debug, int, 0);
93 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
94
95 static int copybreak __read_mostly = 128;
96 module_param(copybreak, int, 0);
97 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
98
99 static int disable_msi = 0;
100 module_param(disable_msi, int, 0);
101 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
102
103 static const struct pci_device_id sky2_id_table[] = {
104 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
105 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
106 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
107 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
108 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
109 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B03) }, /* DGE-550T */
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4354) }, /* 88E8040 */
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4356) }, /* 88EC033 */
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x435A) }, /* 88E8048 */
125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) }, /* 88E8052 */
126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) }, /* 88E8050 */
127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) }, /* 88E8053 */
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) }, /* 88E8055 */
129 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) }, /* 88E8056 */
130 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4365) }, /* 88E8070 */
131 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) }, /* 88EC036 */
132 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) }, /* 88EC032 */
133 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) }, /* 88EC034 */
134 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4369) }, /* 88EC042 */
135 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436A) }, /* 88E8058 */
136 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436B) }, /* 88E8071 */
137 { 0 }
138 };
139
140 MODULE_DEVICE_TABLE(pci, sky2_id_table);
141
142 /* Avoid conditionals by using array */
143 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
144 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
145 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
146
147 /* This driver supports yukon2 chipset only */
148 static const char *yukon2_name[] = {
149 "XL", /* 0xb3 */
150 "EC Ultra", /* 0xb4 */
151 "Extreme", /* 0xb5 */
152 "EC", /* 0xb6 */
153 "FE", /* 0xb7 */
154 "FE+", /* 0xb8 */
155 };
156
157 static void sky2_set_multicast(struct net_device *dev);
158
159 /* Access to external PHY */
160 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
161 {
162 int i;
163
164 gma_write16(hw, port, GM_SMI_DATA, val);
165 gma_write16(hw, port, GM_SMI_CTRL,
166 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
167
168 for (i = 0; i < PHY_RETRIES; i++) {
169 if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
170 return 0;
171 udelay(1);
172 }
173
174 printk(KERN_WARNING PFX "%s: phy write timeout\n", hw->dev[port]->name);
175 return -ETIMEDOUT;
176 }
177
178 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
179 {
180 int i;
181
182 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
183 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
184
185 for (i = 0; i < PHY_RETRIES; i++) {
186 if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL) {
187 *val = gma_read16(hw, port, GM_SMI_DATA);
188 return 0;
189 }
190
191 udelay(1);
192 }
193
194 return -ETIMEDOUT;
195 }
196
197 static u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
198 {
199 u16 v;
200
201 if (__gm_phy_read(hw, port, reg, &v) != 0)
202 printk(KERN_WARNING PFX "%s: phy read timeout\n", hw->dev[port]->name);
203 return v;
204 }
205
206
207 static void sky2_power_on(struct sky2_hw *hw)
208 {
209 /* switch power to VCC (WA for VAUX problem) */
210 sky2_write8(hw, B0_POWER_CTRL,
211 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
212
213 /* disable Core Clock Division, */
214 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
215
216 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
217 /* enable bits are inverted */
218 sky2_write8(hw, B2_Y2_CLK_GATE,
219 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
220 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
221 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
222 else
223 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
224
225 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
226 struct pci_dev *pdev = hw->pdev;
227 u32 reg;
228
229 pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
230
231 pci_read_config_dword(pdev, PCI_DEV_REG4, &reg);
232 /* set all bits to 0 except bits 15..12 and 8 */
233 reg &= P_ASPM_CONTROL_MSK;
234 pci_write_config_dword(pdev, PCI_DEV_REG4, reg);
235
236 pci_read_config_dword(pdev, PCI_DEV_REG5, &reg);
237 /* set all bits to 0 except bits 28 & 27 */
238 reg &= P_CTL_TIM_VMAIN_AV_MSK;
239 pci_write_config_dword(pdev, PCI_DEV_REG5, reg);
240
241 pci_write_config_dword(pdev, PCI_CFG_REG_1, 0);
242
243 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
244 reg = sky2_read32(hw, B2_GP_IO);
245 reg |= GLB_GPIO_STAT_RACE_DIS;
246 sky2_write32(hw, B2_GP_IO, reg);
247
248 sky2_read32(hw, B2_GP_IO);
249 }
250 }
251
252 static void sky2_power_aux(struct sky2_hw *hw)
253 {
254 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
255 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
256 else
257 /* enable bits are inverted */
258 sky2_write8(hw, B2_Y2_CLK_GATE,
259 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
260 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
261 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
262
263 /* switch power to VAUX */
264 if (sky2_read16(hw, B0_CTST) & Y2_VAUX_AVAIL)
265 sky2_write8(hw, B0_POWER_CTRL,
266 (PC_VAUX_ENA | PC_VCC_ENA |
267 PC_VAUX_ON | PC_VCC_OFF));
268 }
269
270 static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
271 {
272 u16 reg;
273
274 /* disable all GMAC IRQ's */
275 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
276 /* disable PHY IRQs */
277 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
278
279 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
280 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
281 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
282 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
283
284 reg = gma_read16(hw, port, GM_RX_CTRL);
285 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
286 gma_write16(hw, port, GM_RX_CTRL, reg);
287 }
288
289 /* flow control to advertise bits */
290 static const u16 copper_fc_adv[] = {
291 [FC_NONE] = 0,
292 [FC_TX] = PHY_M_AN_ASP,
293 [FC_RX] = PHY_M_AN_PC,
294 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
295 };
296
297 /* flow control to advertise bits when using 1000BaseX */
298 static const u16 fiber_fc_adv[] = {
299 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
300 [FC_TX] = PHY_M_P_ASYM_MD_X,
301 [FC_RX] = PHY_M_P_SYM_MD_X,
302 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
303 };
304
305 /* flow control to GMA disable bits */
306 static const u16 gm_fc_disable[] = {
307 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
308 [FC_TX] = GM_GPCR_FC_RX_DIS,
309 [FC_RX] = GM_GPCR_FC_TX_DIS,
310 [FC_BOTH] = 0,
311 };
312
313
314 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
315 {
316 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
317 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
318
319 if (sky2->autoneg == AUTONEG_ENABLE &&
320 !(hw->flags & SKY2_HW_NEWER_PHY)) {
321 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
322
323 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
324 PHY_M_EC_MAC_S_MSK);
325 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
326
327 /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
328 if (hw->chip_id == CHIP_ID_YUKON_EC)
329 /* set downshift counter to 3x and enable downshift */
330 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
331 else
332 /* set master & slave downshift counter to 1x */
333 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
334
335 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
336 }
337
338 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
339 if (sky2_is_copper(hw)) {
340 if (!(hw->flags & SKY2_HW_GIGABIT)) {
341 /* enable automatic crossover */
342 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
343
344 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
345 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
346 u16 spec;
347
348 /* Enable Class A driver for FE+ A0 */
349 spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2);
350 spec |= PHY_M_FESC_SEL_CL_A;
351 gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec);
352 }
353 } else {
354 /* disable energy detect */
355 ctrl &= ~PHY_M_PC_EN_DET_MSK;
356
357 /* enable automatic crossover */
358 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
359
360 /* downshift on PHY 88E1112 and 88E1149 is changed */
361 if (sky2->autoneg == AUTONEG_ENABLE
362 && (hw->flags & SKY2_HW_NEWER_PHY)) {
363 /* set downshift counter to 3x and enable downshift */
364 ctrl &= ~PHY_M_PC_DSC_MSK;
365 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
366 }
367 }
368 } else {
369 /* workaround for deviation #4.88 (CRC errors) */
370 /* disable Automatic Crossover */
371
372 ctrl &= ~PHY_M_PC_MDIX_MSK;
373 }
374
375 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
376
377 /* special setup for PHY 88E1112 Fiber */
378 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
379 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
380
381 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
382 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
383 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
384 ctrl &= ~PHY_M_MAC_MD_MSK;
385 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
386 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
387
388 if (hw->pmd_type == 'P') {
389 /* select page 1 to access Fiber registers */
390 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
391
392 /* for SFP-module set SIGDET polarity to low */
393 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
394 ctrl |= PHY_M_FIB_SIGD_POL;
395 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
396 }
397
398 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
399 }
400
401 ctrl = PHY_CT_RESET;
402 ct1000 = 0;
403 adv = PHY_AN_CSMA;
404 reg = 0;
405
406 if (sky2->autoneg == AUTONEG_ENABLE) {
407 if (sky2_is_copper(hw)) {
408 if (sky2->advertising & ADVERTISED_1000baseT_Full)
409 ct1000 |= PHY_M_1000C_AFD;
410 if (sky2->advertising & ADVERTISED_1000baseT_Half)
411 ct1000 |= PHY_M_1000C_AHD;
412 if (sky2->advertising & ADVERTISED_100baseT_Full)
413 adv |= PHY_M_AN_100_FD;
414 if (sky2->advertising & ADVERTISED_100baseT_Half)
415 adv |= PHY_M_AN_100_HD;
416 if (sky2->advertising & ADVERTISED_10baseT_Full)
417 adv |= PHY_M_AN_10_FD;
418 if (sky2->advertising & ADVERTISED_10baseT_Half)
419 adv |= PHY_M_AN_10_HD;
420
421 adv |= copper_fc_adv[sky2->flow_mode];
422 } else { /* special defines for FIBER (88E1040S only) */
423 if (sky2->advertising & ADVERTISED_1000baseT_Full)
424 adv |= PHY_M_AN_1000X_AFD;
425 if (sky2->advertising & ADVERTISED_1000baseT_Half)
426 adv |= PHY_M_AN_1000X_AHD;
427
428 adv |= fiber_fc_adv[sky2->flow_mode];
429 }
430
431 /* Restart Auto-negotiation */
432 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
433 } else {
434 /* forced speed/duplex settings */
435 ct1000 = PHY_M_1000C_MSE;
436
437 /* Disable auto update for duplex flow control and speed */
438 reg |= GM_GPCR_AU_ALL_DIS;
439
440 switch (sky2->speed) {
441 case SPEED_1000:
442 ctrl |= PHY_CT_SP1000;
443 reg |= GM_GPCR_SPEED_1000;
444 break;
445 case SPEED_100:
446 ctrl |= PHY_CT_SP100;
447 reg |= GM_GPCR_SPEED_100;
448 break;
449 }
450
451 if (sky2->duplex == DUPLEX_FULL) {
452 reg |= GM_GPCR_DUP_FULL;
453 ctrl |= PHY_CT_DUP_MD;
454 } else if (sky2->speed < SPEED_1000)
455 sky2->flow_mode = FC_NONE;
456
457
458 reg |= gm_fc_disable[sky2->flow_mode];
459
460 /* Forward pause packets to GMAC? */
461 if (sky2->flow_mode & FC_RX)
462 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
463 else
464 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
465 }
466
467 gma_write16(hw, port, GM_GP_CTRL, reg);
468
469 if (hw->flags & SKY2_HW_GIGABIT)
470 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
471
472 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
473 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
474
475 /* Setup Phy LED's */
476 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
477 ledover = 0;
478
479 switch (hw->chip_id) {
480 case CHIP_ID_YUKON_FE:
481 /* on 88E3082 these bits are at 11..9 (shifted left) */
482 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
483
484 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
485
486 /* delete ACT LED control bits */
487 ctrl &= ~PHY_M_FELP_LED1_MSK;
488 /* change ACT LED control to blink mode */
489 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
490 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
491 break;
492
493 case CHIP_ID_YUKON_FE_P:
494 /* Enable Link Partner Next Page */
495 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
496 ctrl |= PHY_M_PC_ENA_LIP_NP;
497
498 /* disable Energy Detect and enable scrambler */
499 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
500 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
501
502 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
503 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
504 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
505 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
506
507 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
508 break;
509
510 case CHIP_ID_YUKON_XL:
511 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
512
513 /* select page 3 to access LED control register */
514 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
515
516 /* set LED Function Control register */
517 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
518 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
519 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
520 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
521 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
522
523 /* set Polarity Control register */
524 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
525 (PHY_M_POLC_LS1_P_MIX(4) |
526 PHY_M_POLC_IS0_P_MIX(4) |
527 PHY_M_POLC_LOS_CTRL(2) |
528 PHY_M_POLC_INIT_CTRL(2) |
529 PHY_M_POLC_STA1_CTRL(2) |
530 PHY_M_POLC_STA0_CTRL(2)));
531
532 /* restore page register */
533 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
534 break;
535
536 case CHIP_ID_YUKON_EC_U:
537 case CHIP_ID_YUKON_EX:
538 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
539
540 /* select page 3 to access LED control register */
541 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
542
543 /* set LED Function Control register */
544 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
545 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
546 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
547 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
548 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
549
550 /* set Blink Rate in LED Timer Control Register */
551 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
552 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
553 /* restore page register */
554 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
555 break;
556
557 default:
558 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
559 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
560 /* turn off the Rx LED (LED_RX) */
561 ledover &= ~PHY_M_LED_MO_RX;
562 }
563
564 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
565 hw->chip_rev == CHIP_REV_YU_EC_U_A1) {
566 /* apply fixes in PHY AFE */
567 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
568
569 /* increase differential signal amplitude in 10BASE-T */
570 gm_phy_write(hw, port, 0x18, 0xaa99);
571 gm_phy_write(hw, port, 0x17, 0x2011);
572
573 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
574 gm_phy_write(hw, port, 0x18, 0xa204);
575 gm_phy_write(hw, port, 0x17, 0x2002);
576
577 /* set page register to 0 */
578 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
579 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
580 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
581 /* apply workaround for integrated resistors calibration */
582 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
583 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
584 } else if (hw->chip_id != CHIP_ID_YUKON_EX) {
585 /* no effect on Yukon-XL */
586 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
587
588 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
589 /* turn on 100 Mbps LED (LED_LINK100) */
590 ledover |= PHY_M_LED_MO_100;
591 }
592
593 if (ledover)
594 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
595
596 }
597
598 /* Enable phy interrupt on auto-negotiation complete (or link up) */
599 if (sky2->autoneg == AUTONEG_ENABLE)
600 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
601 else
602 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
603 }
604
605 static void sky2_phy_power(struct sky2_hw *hw, unsigned port, int onoff)
606 {
607 struct pci_dev *pdev = hw->pdev;
608 u32 reg1;
609 static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
610 static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
611
612 pci_read_config_dword(pdev, PCI_DEV_REG1, &reg1);
613 /* Turn on/off phy power saving */
614 if (onoff)
615 reg1 &= ~phy_power[port];
616 else
617 reg1 |= phy_power[port];
618
619 if (onoff && hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
620 reg1 |= coma_mode[port];
621
622 pci_write_config_dword(pdev, PCI_DEV_REG1, reg1);
623 pci_read_config_dword(pdev, PCI_DEV_REG1, &reg1);
624
625 udelay(100);
626 }
627
628 /* Force a renegotiation */
629 static void sky2_phy_reinit(struct sky2_port *sky2)
630 {
631 spin_lock_bh(&sky2->phy_lock);
632 sky2_phy_init(sky2->hw, sky2->port);
633 spin_unlock_bh(&sky2->phy_lock);
634 }
635
636 /* Put device in state to listen for Wake On Lan */
637 static void sky2_wol_init(struct sky2_port *sky2)
638 {
639 struct sky2_hw *hw = sky2->hw;
640 unsigned port = sky2->port;
641 enum flow_control save_mode;
642 u16 ctrl;
643 u32 reg1;
644
645 /* Bring hardware out of reset */
646 sky2_write16(hw, B0_CTST, CS_RST_CLR);
647 sky2_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
648
649 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
650 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
651
652 /* Force to 10/100
653 * sky2_reset will re-enable on resume
654 */
655 save_mode = sky2->flow_mode;
656 ctrl = sky2->advertising;
657
658 sky2->advertising &= ~(ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full);
659 sky2->flow_mode = FC_NONE;
660 sky2_phy_power(hw, port, 1);
661 sky2_phy_reinit(sky2);
662
663 sky2->flow_mode = save_mode;
664 sky2->advertising = ctrl;
665
666 /* Set GMAC to no flow control and auto update for speed/duplex */
667 gma_write16(hw, port, GM_GP_CTRL,
668 GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
669 GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
670
671 /* Set WOL address */
672 memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
673 sky2->netdev->dev_addr, ETH_ALEN);
674
675 /* Turn on appropriate WOL control bits */
676 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
677 ctrl = 0;
678 if (sky2->wol & WAKE_PHY)
679 ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
680 else
681 ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
682
683 if (sky2->wol & WAKE_MAGIC)
684 ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
685 else
686 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;;
687
688 ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
689 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
690
691 /* Turn on legacy PCI-Express PME mode */
692 pci_read_config_dword(hw->pdev, PCI_DEV_REG1, &reg1);
693 reg1 |= PCI_Y2_PME_LEGACY;
694 pci_write_config_dword(hw->pdev, PCI_DEV_REG1, reg1);
695
696 /* block receiver */
697 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
698
699 }
700
701 static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
702 {
703 struct net_device *dev = hw->dev[port];
704
705 if (dev->mtu <= ETH_DATA_LEN)
706 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
707 TX_JUMBO_DIS | TX_STFW_ENA);
708
709 else if (hw->chip_id != CHIP_ID_YUKON_EC_U)
710 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
711 TX_STFW_ENA | TX_JUMBO_ENA);
712 else {
713 /* set Tx GMAC FIFO Almost Empty Threshold */
714 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
715 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
716
717 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
718 TX_JUMBO_ENA | TX_STFW_DIS);
719
720 /* Can't do offload because of lack of store/forward */
721 dev->features &= ~(NETIF_F_TSO | NETIF_F_SG | NETIF_F_ALL_CSUM);
722 }
723 }
724
725 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
726 {
727 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
728 u16 reg;
729 u32 rx_reg;
730 int i;
731 const u8 *addr = hw->dev[port]->dev_addr;
732
733 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
734 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
735
736 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
737
738 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
739 /* WA DEV_472 -- looks like crossed wires on port 2 */
740 /* clear GMAC 1 Control reset */
741 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
742 do {
743 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
744 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
745 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
746 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
747 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
748 }
749
750 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
751
752 /* Enable Transmit FIFO Underrun */
753 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
754
755 spin_lock_bh(&sky2->phy_lock);
756 sky2_phy_init(hw, port);
757 spin_unlock_bh(&sky2->phy_lock);
758
759 /* MIB clear */
760 reg = gma_read16(hw, port, GM_PHY_ADDR);
761 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
762
763 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
764 gma_read16(hw, port, i);
765 gma_write16(hw, port, GM_PHY_ADDR, reg);
766
767 /* transmit control */
768 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
769
770 /* receive control reg: unicast + multicast + no FCS */
771 gma_write16(hw, port, GM_RX_CTRL,
772 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
773
774 /* transmit flow control */
775 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
776
777 /* transmit parameter */
778 gma_write16(hw, port, GM_TX_PARAM,
779 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
780 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
781 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
782 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
783
784 /* serial mode register */
785 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
786 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
787
788 if (hw->dev[port]->mtu > ETH_DATA_LEN)
789 reg |= GM_SMOD_JUMBO_ENA;
790
791 gma_write16(hw, port, GM_SERIAL_MODE, reg);
792
793 /* virtual address for data */
794 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
795
796 /* physical address: used for pause frames */
797 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
798
799 /* ignore counter overflows */
800 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
801 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
802 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
803
804 /* Configure Rx MAC FIFO */
805 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
806 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
807 if (hw->chip_id == CHIP_ID_YUKON_EX ||
808 hw->chip_id == CHIP_ID_YUKON_FE_P)
809 rx_reg |= GMF_RX_OVER_ON;
810
811 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
812
813 /* Flush Rx MAC FIFO on any flow control or error */
814 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
815
816 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
817 reg = RX_GMF_FL_THR_DEF + 1;
818 /* Another magic mystery workaround from sk98lin */
819 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
820 hw->chip_rev == CHIP_REV_YU_FE2_A0)
821 reg = 0x178;
822 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
823
824 /* Configure Tx MAC FIFO */
825 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
826 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
827
828 /* On chips without ram buffer, pause is controled by MAC level */
829 if (sky2_read8(hw, B2_E_0) == 0) {
830 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
831 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
832
833 sky2_set_tx_stfwd(hw, port);
834 }
835
836 }
837
838 /* Assign Ram Buffer allocation to queue */
839 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
840 {
841 u32 end;
842
843 /* convert from K bytes to qwords used for hw register */
844 start *= 1024/8;
845 space *= 1024/8;
846 end = start + space - 1;
847
848 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
849 sky2_write32(hw, RB_ADDR(q, RB_START), start);
850 sky2_write32(hw, RB_ADDR(q, RB_END), end);
851 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
852 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
853
854 if (q == Q_R1 || q == Q_R2) {
855 u32 tp = space - space/4;
856
857 /* On receive queue's set the thresholds
858 * give receiver priority when > 3/4 full
859 * send pause when down to 2K
860 */
861 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
862 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
863
864 tp = space - 2048/8;
865 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
866 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
867 } else {
868 /* Enable store & forward on Tx queue's because
869 * Tx FIFO is only 1K on Yukon
870 */
871 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
872 }
873
874 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
875 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
876 }
877
878 /* Setup Bus Memory Interface */
879 static void sky2_qset(struct sky2_hw *hw, u16 q)
880 {
881 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
882 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
883 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
884 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
885 }
886
887 /* Setup prefetch unit registers. This is the interface between
888 * hardware and driver list elements
889 */
890 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
891 u64 addr, u32 last)
892 {
893 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
894 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
895 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
896 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
897 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
898 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
899
900 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
901 }
902
903 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
904 {
905 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
906
907 sky2->tx_prod = RING_NEXT(sky2->tx_prod, TX_RING_SIZE);
908 le->ctrl = 0;
909 return le;
910 }
911
912 static void tx_init(struct sky2_port *sky2)
913 {
914 struct sky2_tx_le *le;
915
916 sky2->tx_prod = sky2->tx_cons = 0;
917 sky2->tx_tcpsum = 0;
918 sky2->tx_last_mss = 0;
919
920 le = get_tx_le(sky2);
921 le->addr = 0;
922 le->opcode = OP_ADDR64 | HW_OWNER;
923 sky2->tx_addr64 = 0;
924 }
925
926 static inline struct tx_ring_info *tx_le_re(struct sky2_port *sky2,
927 struct sky2_tx_le *le)
928 {
929 return sky2->tx_ring + (le - sky2->tx_le);
930 }
931
932 /* Update chip's next pointer */
933 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
934 {
935 /* Make sure write' to descriptors are complete before we tell hardware */
936 wmb();
937 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
938
939 /* Synchronize I/O on since next processor may write to tail */
940 mmiowb();
941 }
942
943
944 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
945 {
946 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
947 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
948 le->ctrl = 0;
949 return le;
950 }
951
952 /* Build description to hardware for one receive segment */
953 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
954 dma_addr_t map, unsigned len)
955 {
956 struct sky2_rx_le *le;
957 u32 hi = upper_32_bits(map);
958
959 if (sky2->rx_addr64 != hi) {
960 le = sky2_next_rx(sky2);
961 le->addr = cpu_to_le32(hi);
962 le->opcode = OP_ADDR64 | HW_OWNER;
963 sky2->rx_addr64 = upper_32_bits(map + len);
964 }
965
966 le = sky2_next_rx(sky2);
967 le->addr = cpu_to_le32((u32) map);
968 le->length = cpu_to_le16(len);
969 le->opcode = op | HW_OWNER;
970 }
971
972 /* Build description to hardware for one possibly fragmented skb */
973 static void sky2_rx_submit(struct sky2_port *sky2,
974 const struct rx_ring_info *re)
975 {
976 int i;
977
978 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
979
980 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
981 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
982 }
983
984
985 static void sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
986 unsigned size)
987 {
988 struct sk_buff *skb = re->skb;
989 int i;
990
991 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
992 pci_unmap_len_set(re, data_size, size);
993
994 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
995 re->frag_addr[i] = pci_map_page(pdev,
996 skb_shinfo(skb)->frags[i].page,
997 skb_shinfo(skb)->frags[i].page_offset,
998 skb_shinfo(skb)->frags[i].size,
999 PCI_DMA_FROMDEVICE);
1000 }
1001
1002 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1003 {
1004 struct sk_buff *skb = re->skb;
1005 int i;
1006
1007 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
1008 PCI_DMA_FROMDEVICE);
1009
1010 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1011 pci_unmap_page(pdev, re->frag_addr[i],
1012 skb_shinfo(skb)->frags[i].size,
1013 PCI_DMA_FROMDEVICE);
1014 }
1015
1016 /* Tell chip where to start receive checksum.
1017 * Actually has two checksums, but set both same to avoid possible byte
1018 * order problems.
1019 */
1020 static void rx_set_checksum(struct sky2_port *sky2)
1021 {
1022 struct sky2_rx_le *le = sky2_next_rx(sky2);
1023
1024 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1025 le->ctrl = 0;
1026 le->opcode = OP_TCPSTART | HW_OWNER;
1027
1028 sky2_write32(sky2->hw,
1029 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1030 sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
1031 }
1032
1033 /*
1034 * The RX Stop command will not work for Yukon-2 if the BMU does not
1035 * reach the end of packet and since we can't make sure that we have
1036 * incoming data, we must reset the BMU while it is not doing a DMA
1037 * transfer. Since it is possible that the RX path is still active,
1038 * the RX RAM buffer will be stopped first, so any possible incoming
1039 * data will not trigger a DMA. After the RAM buffer is stopped, the
1040 * BMU is polled until any DMA in progress is ended and only then it
1041 * will be reset.
1042 */
1043 static void sky2_rx_stop(struct sky2_port *sky2)
1044 {
1045 struct sky2_hw *hw = sky2->hw;
1046 unsigned rxq = rxqaddr[sky2->port];
1047 int i;
1048
1049 /* disable the RAM Buffer receive queue */
1050 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1051
1052 for (i = 0; i < 0xffff; i++)
1053 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1054 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1055 goto stopped;
1056
1057 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
1058 sky2->netdev->name);
1059 stopped:
1060 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1061
1062 /* reset the Rx prefetch unit */
1063 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1064 mmiowb();
1065 }
1066
1067 /* Clean out receive buffer area, assumes receiver hardware stopped */
1068 static void sky2_rx_clean(struct sky2_port *sky2)
1069 {
1070 unsigned i;
1071
1072 memset(sky2->rx_le, 0, RX_LE_BYTES);
1073 for (i = 0; i < sky2->rx_pending; i++) {
1074 struct rx_ring_info *re = sky2->rx_ring + i;
1075
1076 if (re->skb) {
1077 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1078 kfree_skb(re->skb);
1079 re->skb = NULL;
1080 }
1081 }
1082 }
1083
1084 /* Basic MII support */
1085 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1086 {
1087 struct mii_ioctl_data *data = if_mii(ifr);
1088 struct sky2_port *sky2 = netdev_priv(dev);
1089 struct sky2_hw *hw = sky2->hw;
1090 int err = -EOPNOTSUPP;
1091
1092 if (!netif_running(dev))
1093 return -ENODEV; /* Phy still in reset */
1094
1095 switch (cmd) {
1096 case SIOCGMIIPHY:
1097 data->phy_id = PHY_ADDR_MARV;
1098
1099 /* fallthru */
1100 case SIOCGMIIREG: {
1101 u16 val = 0;
1102
1103 spin_lock_bh(&sky2->phy_lock);
1104 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1105 spin_unlock_bh(&sky2->phy_lock);
1106
1107 data->val_out = val;
1108 break;
1109 }
1110
1111 case SIOCSMIIREG:
1112 if (!capable(CAP_NET_ADMIN))
1113 return -EPERM;
1114
1115 spin_lock_bh(&sky2->phy_lock);
1116 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1117 data->val_in);
1118 spin_unlock_bh(&sky2->phy_lock);
1119 break;
1120 }
1121 return err;
1122 }
1123
1124 #ifdef SKY2_VLAN_TAG_USED
1125 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
1126 {
1127 struct sky2_port *sky2 = netdev_priv(dev);
1128 struct sky2_hw *hw = sky2->hw;
1129 u16 port = sky2->port;
1130
1131 netif_tx_lock_bh(dev);
1132 napi_disable(&hw->napi);
1133
1134 sky2->vlgrp = grp;
1135 if (grp) {
1136 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1137 RX_VLAN_STRIP_ON);
1138 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1139 TX_VLAN_TAG_ON);
1140 } else {
1141 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1142 RX_VLAN_STRIP_OFF);
1143 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1144 TX_VLAN_TAG_OFF);
1145 }
1146
1147 napi_enable(&hw->napi);
1148 netif_tx_unlock_bh(dev);
1149 }
1150 #endif
1151
1152 /*
1153 * Allocate an skb for receiving. If the MTU is large enough
1154 * make the skb non-linear with a fragment list of pages.
1155 *
1156 * It appears the hardware has a bug in the FIFO logic that
1157 * cause it to hang if the FIFO gets overrun and the receive buffer
1158 * is not 64 byte aligned. The buffer returned from netdev_alloc_skb is
1159 * aligned except if slab debugging is enabled.
1160 */
1161 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2)
1162 {
1163 struct sk_buff *skb;
1164 unsigned long p;
1165 int i;
1166
1167 skb = netdev_alloc_skb(sky2->netdev, sky2->rx_data_size + RX_SKB_ALIGN);
1168 if (!skb)
1169 goto nomem;
1170
1171 p = (unsigned long) skb->data;
1172 skb_reserve(skb, ALIGN(p, RX_SKB_ALIGN) - p);
1173
1174 for (i = 0; i < sky2->rx_nfrags; i++) {
1175 struct page *page = alloc_page(GFP_ATOMIC);
1176
1177 if (!page)
1178 goto free_partial;
1179 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1180 }
1181
1182 return skb;
1183 free_partial:
1184 kfree_skb(skb);
1185 nomem:
1186 return NULL;
1187 }
1188
1189 static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1190 {
1191 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1192 }
1193
1194 /*
1195 * Allocate and setup receiver buffer pool.
1196 * Normal case this ends up creating one list element for skb
1197 * in the receive ring. Worst case if using large MTU and each
1198 * allocation falls on a different 64 bit region, that results
1199 * in 6 list elements per ring entry.
1200 * One element is used for checksum enable/disable, and one
1201 * extra to avoid wrap.
1202 */
1203 static int sky2_rx_start(struct sky2_port *sky2)
1204 {
1205 struct sky2_hw *hw = sky2->hw;
1206 struct rx_ring_info *re;
1207 unsigned rxq = rxqaddr[sky2->port];
1208 unsigned i, size, space, thresh;
1209
1210 sky2->rx_put = sky2->rx_next = 0;
1211 sky2_qset(hw, rxq);
1212
1213 /* On PCI express lowering the watermark gives better performance */
1214 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
1215 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1216
1217 /* These chips have no ram buffer?
1218 * MAC Rx RAM Read is controlled by hardware */
1219 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1220 (hw->chip_rev == CHIP_REV_YU_EC_U_A1
1221 || hw->chip_rev == CHIP_REV_YU_EC_U_B0))
1222 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1223
1224 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1225
1226 if (!(hw->flags & SKY2_HW_NEW_LE))
1227 rx_set_checksum(sky2);
1228
1229 /* Space needed for frame data + headers rounded up */
1230 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1231
1232 /* Stopping point for hardware truncation */
1233 thresh = (size - 8) / sizeof(u32);
1234
1235 /* Account for overhead of skb - to avoid order > 0 allocation */
1236 space = SKB_DATA_ALIGN(size) + NET_SKB_PAD
1237 + sizeof(struct skb_shared_info);
1238
1239 sky2->rx_nfrags = space >> PAGE_SHIFT;
1240 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1241
1242 if (sky2->rx_nfrags != 0) {
1243 /* Compute residue after pages */
1244 space = sky2->rx_nfrags << PAGE_SHIFT;
1245
1246 if (space < size)
1247 size -= space;
1248 else
1249 size = 0;
1250
1251 /* Optimize to handle small packets and headers */
1252 if (size < copybreak)
1253 size = copybreak;
1254 if (size < ETH_HLEN)
1255 size = ETH_HLEN;
1256 }
1257 sky2->rx_data_size = size;
1258
1259 /* Fill Rx ring */
1260 for (i = 0; i < sky2->rx_pending; i++) {
1261 re = sky2->rx_ring + i;
1262
1263 re->skb = sky2_rx_alloc(sky2);
1264 if (!re->skb)
1265 goto nomem;
1266
1267 sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size);
1268 sky2_rx_submit(sky2, re);
1269 }
1270
1271 /*
1272 * The receiver hangs if it receives frames larger than the
1273 * packet buffer. As a workaround, truncate oversize frames, but
1274 * the register is limited to 9 bits, so if you do frames > 2052
1275 * you better get the MTU right!
1276 */
1277 if (thresh > 0x1ff)
1278 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1279 else {
1280 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1281 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1282 }
1283
1284 /* Tell chip about available buffers */
1285 sky2_rx_update(sky2, rxq);
1286 return 0;
1287 nomem:
1288 sky2_rx_clean(sky2);
1289 return -ENOMEM;
1290 }
1291
1292 /* Bring up network interface. */
1293 static int sky2_up(struct net_device *dev)
1294 {
1295 struct sky2_port *sky2 = netdev_priv(dev);
1296 struct sky2_hw *hw = sky2->hw;
1297 unsigned port = sky2->port;
1298 u32 imask, ramsize;
1299 int cap, err = -ENOMEM;
1300 struct net_device *otherdev = hw->dev[sky2->port^1];
1301
1302 /*
1303 * On dual port PCI-X card, there is an problem where status
1304 * can be received out of order due to split transactions
1305 */
1306 if (otherdev && netif_running(otherdev) &&
1307 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1308 struct sky2_port *osky2 = netdev_priv(otherdev);
1309 u16 cmd;
1310
1311 pci_read_config_word(hw->pdev, cap + PCI_X_CMD, &cmd);
1312 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1313 pci_write_config_word(hw->pdev, cap + PCI_X_CMD, cmd);
1314
1315 sky2->rx_csum = 0;
1316 osky2->rx_csum = 0;
1317 }
1318
1319 if (netif_msg_ifup(sky2))
1320 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
1321
1322 netif_carrier_off(dev);
1323
1324 /* must be power of 2 */
1325 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1326 TX_RING_SIZE *
1327 sizeof(struct sky2_tx_le),
1328 &sky2->tx_le_map);
1329 if (!sky2->tx_le)
1330 goto err_out;
1331
1332 sky2->tx_ring = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info),
1333 GFP_KERNEL);
1334 if (!sky2->tx_ring)
1335 goto err_out;
1336
1337 tx_init(sky2);
1338
1339 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1340 &sky2->rx_le_map);
1341 if (!sky2->rx_le)
1342 goto err_out;
1343 memset(sky2->rx_le, 0, RX_LE_BYTES);
1344
1345 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1346 GFP_KERNEL);
1347 if (!sky2->rx_ring)
1348 goto err_out;
1349
1350 sky2_phy_power(hw, port, 1);
1351
1352 sky2_mac_init(hw, port);
1353
1354 /* Register is number of 4K blocks on internal RAM buffer. */
1355 ramsize = sky2_read8(hw, B2_E_0) * 4;
1356 if (ramsize > 0) {
1357 u32 rxspace;
1358
1359 pr_debug(PFX "%s: ram buffer %dK\n", dev->name, ramsize);
1360 if (ramsize < 16)
1361 rxspace = ramsize / 2;
1362 else
1363 rxspace = 8 + (2*(ramsize - 16))/3;
1364
1365 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1366 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1367
1368 /* Make sure SyncQ is disabled */
1369 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1370 RB_RST_SET);
1371 }
1372
1373 sky2_qset(hw, txqaddr[port]);
1374
1375 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1376 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1377 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1378
1379 /* Set almost empty threshold */
1380 if (hw->chip_id == CHIP_ID_YUKON_EC_U
1381 && hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1382 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1383
1384 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1385 TX_RING_SIZE - 1);
1386
1387 err = sky2_rx_start(sky2);
1388 if (err)
1389 goto err_out;
1390
1391 /* Enable interrupts from phy/mac for port */
1392 imask = sky2_read32(hw, B0_IMSK);
1393 imask |= portirq_msk[port];
1394 sky2_write32(hw, B0_IMSK, imask);
1395
1396 return 0;
1397
1398 err_out:
1399 if (sky2->rx_le) {
1400 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1401 sky2->rx_le, sky2->rx_le_map);
1402 sky2->rx_le = NULL;
1403 }
1404 if (sky2->tx_le) {
1405 pci_free_consistent(hw->pdev,
1406 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1407 sky2->tx_le, sky2->tx_le_map);
1408 sky2->tx_le = NULL;
1409 }
1410 kfree(sky2->tx_ring);
1411 kfree(sky2->rx_ring);
1412
1413 sky2->tx_ring = NULL;
1414 sky2->rx_ring = NULL;
1415 return err;
1416 }
1417
1418 /* Modular subtraction in ring */
1419 static inline int tx_dist(unsigned tail, unsigned head)
1420 {
1421 return (head - tail) & (TX_RING_SIZE - 1);
1422 }
1423
1424 /* Number of list elements available for next tx */
1425 static inline int tx_avail(const struct sky2_port *sky2)
1426 {
1427 return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
1428 }
1429
1430 /* Estimate of number of transmit list elements required */
1431 static unsigned tx_le_req(const struct sk_buff *skb)
1432 {
1433 unsigned count;
1434
1435 count = sizeof(dma_addr_t) / sizeof(u32);
1436 count += skb_shinfo(skb)->nr_frags * count;
1437
1438 if (skb_is_gso(skb))
1439 ++count;
1440
1441 if (skb->ip_summed == CHECKSUM_PARTIAL)
1442 ++count;
1443
1444 return count;
1445 }
1446
1447 /*
1448 * Put one packet in ring for transmit.
1449 * A single packet can generate multiple list elements, and
1450 * the number of ring elements will probably be less than the number
1451 * of list elements used.
1452 */
1453 static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1454 {
1455 struct sky2_port *sky2 = netdev_priv(dev);
1456 struct sky2_hw *hw = sky2->hw;
1457 struct sky2_tx_le *le = NULL;
1458 struct tx_ring_info *re;
1459 unsigned i, len;
1460 dma_addr_t mapping;
1461 u32 addr64;
1462 u16 mss;
1463 u8 ctrl;
1464
1465 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1466 return NETDEV_TX_BUSY;
1467
1468 if (unlikely(netif_msg_tx_queued(sky2)))
1469 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1470 dev->name, sky2->tx_prod, skb->len);
1471
1472 len = skb_headlen(skb);
1473 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1474 addr64 = upper_32_bits(mapping);
1475
1476 /* Send high bits if changed or crosses boundary */
1477 if (addr64 != sky2->tx_addr64 ||
1478 upper_32_bits(mapping + len) != sky2->tx_addr64) {
1479 le = get_tx_le(sky2);
1480 le->addr = cpu_to_le32(addr64);
1481 le->opcode = OP_ADDR64 | HW_OWNER;
1482 sky2->tx_addr64 = upper_32_bits(mapping + len);
1483 }
1484
1485 /* Check for TCP Segmentation Offload */
1486 mss = skb_shinfo(skb)->gso_size;
1487 if (mss != 0) {
1488
1489 if (!(hw->flags & SKY2_HW_NEW_LE))
1490 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1491
1492 if (mss != sky2->tx_last_mss) {
1493 le = get_tx_le(sky2);
1494 le->addr = cpu_to_le32(mss);
1495
1496 if (hw->flags & SKY2_HW_NEW_LE)
1497 le->opcode = OP_MSS | HW_OWNER;
1498 else
1499 le->opcode = OP_LRGLEN | HW_OWNER;
1500 sky2->tx_last_mss = mss;
1501 }
1502 }
1503
1504 ctrl = 0;
1505 #ifdef SKY2_VLAN_TAG_USED
1506 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1507 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1508 if (!le) {
1509 le = get_tx_le(sky2);
1510 le->addr = 0;
1511 le->opcode = OP_VLAN|HW_OWNER;
1512 } else
1513 le->opcode |= OP_VLAN;
1514 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1515 ctrl |= INS_VLAN;
1516 }
1517 #endif
1518
1519 /* Handle TCP checksum offload */
1520 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1521 /* On Yukon EX (some versions) encoding change. */
1522 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1523 ctrl |= CALSUM; /* auto checksum */
1524 else {
1525 const unsigned offset = skb_transport_offset(skb);
1526 u32 tcpsum;
1527
1528 tcpsum = offset << 16; /* sum start */
1529 tcpsum |= offset + skb->csum_offset; /* sum write */
1530
1531 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1532 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1533 ctrl |= UDPTCP;
1534
1535 if (tcpsum != sky2->tx_tcpsum) {
1536 sky2->tx_tcpsum = tcpsum;
1537
1538 le = get_tx_le(sky2);
1539 le->addr = cpu_to_le32(tcpsum);
1540 le->length = 0; /* initial checksum value */
1541 le->ctrl = 1; /* one packet */
1542 le->opcode = OP_TCPLISW | HW_OWNER;
1543 }
1544 }
1545 }
1546
1547 le = get_tx_le(sky2);
1548 le->addr = cpu_to_le32((u32) mapping);
1549 le->length = cpu_to_le16(len);
1550 le->ctrl = ctrl;
1551 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1552
1553 re = tx_le_re(sky2, le);
1554 re->skb = skb;
1555 pci_unmap_addr_set(re, mapaddr, mapping);
1556 pci_unmap_len_set(re, maplen, len);
1557
1558 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1559 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1560
1561 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1562 frag->size, PCI_DMA_TODEVICE);
1563 addr64 = upper_32_bits(mapping);
1564 if (addr64 != sky2->tx_addr64) {
1565 le = get_tx_le(sky2);
1566 le->addr = cpu_to_le32(addr64);
1567 le->ctrl = 0;
1568 le->opcode = OP_ADDR64 | HW_OWNER;
1569 sky2->tx_addr64 = addr64;
1570 }
1571
1572 le = get_tx_le(sky2);
1573 le->addr = cpu_to_le32((u32) mapping);
1574 le->length = cpu_to_le16(frag->size);
1575 le->ctrl = ctrl;
1576 le->opcode = OP_BUFFER | HW_OWNER;
1577
1578 re = tx_le_re(sky2, le);
1579 re->skb = skb;
1580 pci_unmap_addr_set(re, mapaddr, mapping);
1581 pci_unmap_len_set(re, maplen, frag->size);
1582 }
1583
1584 le->ctrl |= EOP;
1585
1586 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1587 netif_stop_queue(dev);
1588
1589 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1590
1591 dev->trans_start = jiffies;
1592 return NETDEV_TX_OK;
1593 }
1594
1595 /*
1596 * Free ring elements from starting at tx_cons until "done"
1597 *
1598 * NB: the hardware will tell us about partial completion of multi-part
1599 * buffers so make sure not to free skb to early.
1600 */
1601 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1602 {
1603 struct net_device *dev = sky2->netdev;
1604 struct pci_dev *pdev = sky2->hw->pdev;
1605 unsigned idx;
1606
1607 BUG_ON(done >= TX_RING_SIZE);
1608
1609 for (idx = sky2->tx_cons; idx != done;
1610 idx = RING_NEXT(idx, TX_RING_SIZE)) {
1611 struct sky2_tx_le *le = sky2->tx_le + idx;
1612 struct tx_ring_info *re = sky2->tx_ring + idx;
1613
1614 switch(le->opcode & ~HW_OWNER) {
1615 case OP_LARGESEND:
1616 case OP_PACKET:
1617 pci_unmap_single(pdev,
1618 pci_unmap_addr(re, mapaddr),
1619 pci_unmap_len(re, maplen),
1620 PCI_DMA_TODEVICE);
1621 break;
1622 case OP_BUFFER:
1623 pci_unmap_page(pdev, pci_unmap_addr(re, mapaddr),
1624 pci_unmap_len(re, maplen),
1625 PCI_DMA_TODEVICE);
1626 break;
1627 }
1628
1629 if (le->ctrl & EOP) {
1630 if (unlikely(netif_msg_tx_done(sky2)))
1631 printk(KERN_DEBUG "%s: tx done %u\n",
1632 dev->name, idx);
1633
1634 dev->stats.tx_packets++;
1635 dev->stats.tx_bytes += re->skb->len;
1636
1637 dev_kfree_skb_any(re->skb);
1638 sky2->tx_next = RING_NEXT(idx, TX_RING_SIZE);
1639 }
1640 }
1641
1642 sky2->tx_cons = idx;
1643 smp_mb();
1644
1645 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
1646 netif_wake_queue(dev);
1647 }
1648
1649 /* Cleanup all untransmitted buffers, assume transmitter not running */
1650 static void sky2_tx_clean(struct net_device *dev)
1651 {
1652 struct sky2_port *sky2 = netdev_priv(dev);
1653
1654 netif_tx_lock_bh(dev);
1655 sky2_tx_complete(sky2, sky2->tx_prod);
1656 netif_tx_unlock_bh(dev);
1657 }
1658
1659 /* Network shutdown */
1660 static int sky2_down(struct net_device *dev)
1661 {
1662 struct sky2_port *sky2 = netdev_priv(dev);
1663 struct sky2_hw *hw = sky2->hw;
1664 unsigned port = sky2->port;
1665 u16 ctrl;
1666 u32 imask;
1667
1668 /* Never really got started! */
1669 if (!sky2->tx_le)
1670 return 0;
1671
1672 if (netif_msg_ifdown(sky2))
1673 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1674
1675 /* Stop more packets from being queued */
1676 netif_stop_queue(dev);
1677
1678 /* Disable port IRQ */
1679 imask = sky2_read32(hw, B0_IMSK);
1680 imask &= ~portirq_msk[port];
1681 sky2_write32(hw, B0_IMSK, imask);
1682
1683 synchronize_irq(hw->pdev->irq);
1684
1685 sky2_gmac_reset(hw, port);
1686
1687 /* Stop transmitter */
1688 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1689 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1690
1691 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1692 RB_RST_SET | RB_DIS_OP_MD);
1693
1694 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1695 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1696 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1697
1698 /* Make sure no packets are pending */
1699 napi_synchronize(&hw->napi);
1700
1701 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1702
1703 /* Workaround shared GMAC reset */
1704 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1705 && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1706 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1707
1708 /* Disable Force Sync bit and Enable Alloc bit */
1709 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1710 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1711
1712 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1713 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1714 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1715
1716 /* Reset the PCI FIFO of the async Tx queue */
1717 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1718 BMU_RST_SET | BMU_FIFO_RST);
1719
1720 /* Reset the Tx prefetch units */
1721 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1722 PREF_UNIT_RST_SET);
1723
1724 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1725
1726 sky2_rx_stop(sky2);
1727
1728 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1729 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1730
1731 sky2_phy_power(hw, port, 0);
1732
1733 netif_carrier_off(dev);
1734
1735 /* turn off LED's */
1736 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1737
1738 sky2_tx_clean(dev);
1739 sky2_rx_clean(sky2);
1740
1741 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1742 sky2->rx_le, sky2->rx_le_map);
1743 kfree(sky2->rx_ring);
1744
1745 pci_free_consistent(hw->pdev,
1746 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1747 sky2->tx_le, sky2->tx_le_map);
1748 kfree(sky2->tx_ring);
1749
1750 sky2->tx_le = NULL;
1751 sky2->rx_le = NULL;
1752
1753 sky2->rx_ring = NULL;
1754 sky2->tx_ring = NULL;
1755
1756 return 0;
1757 }
1758
1759 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1760 {
1761 if (hw->flags & SKY2_HW_FIBRE_PHY)
1762 return SPEED_1000;
1763
1764 if (!(hw->flags & SKY2_HW_GIGABIT)) {
1765 if (aux & PHY_M_PS_SPEED_100)
1766 return SPEED_100;
1767 else
1768 return SPEED_10;
1769 }
1770
1771 switch (aux & PHY_M_PS_SPEED_MSK) {
1772 case PHY_M_PS_SPEED_1000:
1773 return SPEED_1000;
1774 case PHY_M_PS_SPEED_100:
1775 return SPEED_100;
1776 default:
1777 return SPEED_10;
1778 }
1779 }
1780
1781 static void sky2_link_up(struct sky2_port *sky2)
1782 {
1783 struct sky2_hw *hw = sky2->hw;
1784 unsigned port = sky2->port;
1785 u16 reg;
1786 static const char *fc_name[] = {
1787 [FC_NONE] = "none",
1788 [FC_TX] = "tx",
1789 [FC_RX] = "rx",
1790 [FC_BOTH] = "both",
1791 };
1792
1793 /* enable Rx/Tx */
1794 reg = gma_read16(hw, port, GM_GP_CTRL);
1795 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1796 gma_write16(hw, port, GM_GP_CTRL, reg);
1797
1798 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1799
1800 netif_carrier_on(sky2->netdev);
1801
1802 mod_timer(&hw->watchdog_timer, jiffies + 1);
1803
1804 /* Turn on link LED */
1805 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1806 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1807
1808 if (hw->flags & SKY2_HW_NEWER_PHY) {
1809 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
1810 u16 led = PHY_M_LEDC_LOS_CTRL(1); /* link active */
1811
1812 switch(sky2->speed) {
1813 case SPEED_10:
1814 led |= PHY_M_LEDC_INIT_CTRL(7);
1815 break;
1816
1817 case SPEED_100:
1818 led |= PHY_M_LEDC_STA1_CTRL(7);
1819 break;
1820
1821 case SPEED_1000:
1822 led |= PHY_M_LEDC_STA0_CTRL(7);
1823 break;
1824 }
1825
1826 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
1827 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, led);
1828 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
1829 }
1830
1831 if (netif_msg_link(sky2))
1832 printk(KERN_INFO PFX
1833 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1834 sky2->netdev->name, sky2->speed,
1835 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1836 fc_name[sky2->flow_status]);
1837 }
1838
1839 static void sky2_link_down(struct sky2_port *sky2)
1840 {
1841 struct sky2_hw *hw = sky2->hw;
1842 unsigned port = sky2->port;
1843 u16 reg;
1844
1845 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1846
1847 reg = gma_read16(hw, port, GM_GP_CTRL);
1848 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1849 gma_write16(hw, port, GM_GP_CTRL, reg);
1850
1851 netif_carrier_off(sky2->netdev);
1852
1853 /* Turn on link LED */
1854 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1855
1856 if (netif_msg_link(sky2))
1857 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
1858
1859 sky2_phy_init(hw, port);
1860 }
1861
1862 static enum flow_control sky2_flow(int rx, int tx)
1863 {
1864 if (rx)
1865 return tx ? FC_BOTH : FC_RX;
1866 else
1867 return tx ? FC_TX : FC_NONE;
1868 }
1869
1870 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
1871 {
1872 struct sky2_hw *hw = sky2->hw;
1873 unsigned port = sky2->port;
1874 u16 advert, lpa;
1875
1876 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
1877 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
1878 if (lpa & PHY_M_AN_RF) {
1879 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
1880 return -1;
1881 }
1882
1883 if (!(aux & PHY_M_PS_SPDUP_RES)) {
1884 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
1885 sky2->netdev->name);
1886 return -1;
1887 }
1888
1889 sky2->speed = sky2_phy_speed(hw, aux);
1890 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1891
1892 /* Since the pause result bits seem to in different positions on
1893 * different chips. look at registers.
1894 */
1895 if (hw->flags & SKY2_HW_FIBRE_PHY) {
1896 /* Shift for bits in fiber PHY */
1897 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
1898 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
1899
1900 if (advert & ADVERTISE_1000XPAUSE)
1901 advert |= ADVERTISE_PAUSE_CAP;
1902 if (advert & ADVERTISE_1000XPSE_ASYM)
1903 advert |= ADVERTISE_PAUSE_ASYM;
1904 if (lpa & LPA_1000XPAUSE)
1905 lpa |= LPA_PAUSE_CAP;
1906 if (lpa & LPA_1000XPAUSE_ASYM)
1907 lpa |= LPA_PAUSE_ASYM;
1908 }
1909
1910 sky2->flow_status = FC_NONE;
1911 if (advert & ADVERTISE_PAUSE_CAP) {
1912 if (lpa & LPA_PAUSE_CAP)
1913 sky2->flow_status = FC_BOTH;
1914 else if (advert & ADVERTISE_PAUSE_ASYM)
1915 sky2->flow_status = FC_RX;
1916 } else if (advert & ADVERTISE_PAUSE_ASYM) {
1917 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
1918 sky2->flow_status = FC_TX;
1919 }
1920
1921 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000
1922 && !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
1923 sky2->flow_status = FC_NONE;
1924
1925 if (sky2->flow_status & FC_TX)
1926 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
1927 else
1928 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1929
1930 return 0;
1931 }
1932
1933 /* Interrupt from PHY */
1934 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
1935 {
1936 struct net_device *dev = hw->dev[port];
1937 struct sky2_port *sky2 = netdev_priv(dev);
1938 u16 istatus, phystat;
1939
1940 if (!netif_running(dev))
1941 return;
1942
1943 spin_lock(&sky2->phy_lock);
1944 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
1945 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
1946
1947 if (netif_msg_intr(sky2))
1948 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
1949 sky2->netdev->name, istatus, phystat);
1950
1951 if (sky2->autoneg == AUTONEG_ENABLE && (istatus & PHY_M_IS_AN_COMPL)) {
1952 if (sky2_autoneg_done(sky2, phystat) == 0)
1953 sky2_link_up(sky2);
1954 goto out;
1955 }
1956
1957 if (istatus & PHY_M_IS_LSP_CHANGE)
1958 sky2->speed = sky2_phy_speed(hw, phystat);
1959
1960 if (istatus & PHY_M_IS_DUP_CHANGE)
1961 sky2->duplex =
1962 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1963
1964 if (istatus & PHY_M_IS_LST_CHANGE) {
1965 if (phystat & PHY_M_PS_LINK_UP)
1966 sky2_link_up(sky2);
1967 else
1968 sky2_link_down(sky2);
1969 }
1970 out:
1971 spin_unlock(&sky2->phy_lock);
1972 }
1973
1974 /* Transmit timeout is only called if we are running, carrier is up
1975 * and tx queue is full (stopped).
1976 */
1977 static void sky2_tx_timeout(struct net_device *dev)
1978 {
1979 struct sky2_port *sky2 = netdev_priv(dev);
1980 struct sky2_hw *hw = sky2->hw;
1981
1982 if (netif_msg_timer(sky2))
1983 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
1984
1985 printk(KERN_DEBUG PFX "%s: transmit ring %u .. %u report=%u done=%u\n",
1986 dev->name, sky2->tx_cons, sky2->tx_prod,
1987 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
1988 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
1989
1990 /* can't restart safely under softirq */
1991 schedule_work(&hw->restart_work);
1992 }
1993
1994 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
1995 {
1996 struct sky2_port *sky2 = netdev_priv(dev);
1997 struct sky2_hw *hw = sky2->hw;
1998 unsigned port = sky2->port;
1999 int err;
2000 u16 ctl, mode;
2001 u32 imask;
2002
2003 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2004 return -EINVAL;
2005
2006 if (new_mtu > ETH_DATA_LEN &&
2007 (hw->chip_id == CHIP_ID_YUKON_FE ||
2008 hw->chip_id == CHIP_ID_YUKON_FE_P))
2009 return -EINVAL;
2010
2011 if (!netif_running(dev)) {
2012 dev->mtu = new_mtu;
2013 return 0;
2014 }
2015
2016 imask = sky2_read32(hw, B0_IMSK);
2017 sky2_write32(hw, B0_IMSK, 0);
2018
2019 dev->trans_start = jiffies; /* prevent tx timeout */
2020 netif_stop_queue(dev);
2021 napi_disable(&hw->napi);
2022
2023 synchronize_irq(hw->pdev->irq);
2024
2025 if (sky2_read8(hw, B2_E_0) == 0)
2026 sky2_set_tx_stfwd(hw, port);
2027
2028 ctl = gma_read16(hw, port, GM_GP_CTRL);
2029 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2030 sky2_rx_stop(sky2);
2031 sky2_rx_clean(sky2);
2032
2033 dev->mtu = new_mtu;
2034
2035 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
2036 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
2037
2038 if (dev->mtu > ETH_DATA_LEN)
2039 mode |= GM_SMOD_JUMBO_ENA;
2040
2041 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2042
2043 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2044
2045 err = sky2_rx_start(sky2);
2046 sky2_write32(hw, B0_IMSK, imask);
2047
2048 napi_enable(&hw->napi);
2049
2050 if (err)
2051 dev_close(dev);
2052 else {
2053 gma_write16(hw, port, GM_GP_CTRL, ctl);
2054
2055 netif_wake_queue(dev);
2056 }
2057
2058 return err;
2059 }
2060
2061 /* For small just reuse existing skb for next receive */
2062 static struct sk_buff *receive_copy(struct sky2_port *sky2,
2063 const struct rx_ring_info *re,
2064 unsigned length)
2065 {
2066 struct sk_buff *skb;
2067
2068 skb = netdev_alloc_skb(sky2->netdev, length + 2);
2069 if (likely(skb)) {
2070 skb_reserve(skb, 2);
2071 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2072 length, PCI_DMA_FROMDEVICE);
2073 skb_copy_from_linear_data(re->skb, skb->data, length);
2074 skb->ip_summed = re->skb->ip_summed;
2075 skb->csum = re->skb->csum;
2076 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2077 length, PCI_DMA_FROMDEVICE);
2078 re->skb->ip_summed = CHECKSUM_NONE;
2079 skb_put(skb, length);
2080 }
2081 return skb;
2082 }
2083
2084 /* Adjust length of skb with fragments to match received data */
2085 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2086 unsigned int length)
2087 {
2088 int i, num_frags;
2089 unsigned int size;
2090
2091 /* put header into skb */
2092 size = min(length, hdr_space);
2093 skb->tail += size;
2094 skb->len += size;
2095 length -= size;
2096
2097 num_frags = skb_shinfo(skb)->nr_frags;
2098 for (i = 0; i < num_frags; i++) {
2099 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2100
2101 if (length == 0) {
2102 /* don't need this page */
2103 __free_page(frag->page);
2104 --skb_shinfo(skb)->nr_frags;
2105 } else {
2106 size = min(length, (unsigned) PAGE_SIZE);
2107
2108 frag->size = size;
2109 skb->data_len += size;
2110 skb->truesize += size;
2111 skb->len += size;
2112 length -= size;
2113 }
2114 }
2115 }
2116
2117 /* Normal packet - take skb from ring element and put in a new one */
2118 static struct sk_buff *receive_new(struct sky2_port *sky2,
2119 struct rx_ring_info *re,
2120 unsigned int length)
2121 {
2122 struct sk_buff *skb, *nskb;
2123 unsigned hdr_space = sky2->rx_data_size;
2124
2125 /* Don't be tricky about reusing pages (yet) */
2126 nskb = sky2_rx_alloc(sky2);
2127 if (unlikely(!nskb))
2128 return NULL;
2129
2130 skb = re->skb;
2131 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2132
2133 prefetch(skb->data);
2134 re->skb = nskb;
2135 sky2_rx_map_skb(sky2->hw->pdev, re, hdr_space);
2136
2137 if (skb_shinfo(skb)->nr_frags)
2138 skb_put_frags(skb, hdr_space, length);
2139 else
2140 skb_put(skb, length);
2141 return skb;
2142 }
2143
2144 /*
2145 * Receive one packet.
2146 * For larger packets, get new buffer.
2147 */
2148 static struct sk_buff *sky2_receive(struct net_device *dev,
2149 u16 length, u32 status)
2150 {
2151 struct sky2_port *sky2 = netdev_priv(dev);
2152 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2153 struct sk_buff *skb = NULL;
2154 u16 count = (status & GMR_FS_LEN) >> 16;
2155
2156 #ifdef SKY2_VLAN_TAG_USED
2157 /* Account for vlan tag */
2158 if (sky2->vlgrp && (status & GMR_FS_VLAN))
2159 count -= VLAN_HLEN;
2160 #endif
2161
2162 if (unlikely(netif_msg_rx_status(sky2)))
2163 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
2164 dev->name, sky2->rx_next, status, length);
2165
2166 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2167 prefetch(sky2->rx_ring + sky2->rx_next);
2168
2169 /* This chip has hardware problems that generates bogus status.
2170 * So do only marginal checking and expect higher level protocols
2171 * to handle crap frames.
2172 */
2173 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2174 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2175 length != count)
2176 goto okay;
2177
2178 if (status & GMR_FS_ANY_ERR)
2179 goto error;
2180
2181 if (!(status & GMR_FS_RX_OK))
2182 goto resubmit;
2183
2184 /* if length reported by DMA does not match PHY, packet was truncated */
2185 if (length != count)
2186 goto len_error;
2187
2188 okay:
2189 if (length < copybreak)
2190 skb = receive_copy(sky2, re, length);
2191 else
2192 skb = receive_new(sky2, re, length);
2193 resubmit:
2194 sky2_rx_submit(sky2, re);
2195
2196 return skb;
2197
2198 len_error:
2199 /* Truncation of overlength packets
2200 causes PHY length to not match MAC length */
2201 ++dev->stats.rx_length_errors;
2202 if (netif_msg_rx_err(sky2) && net_ratelimit())
2203 pr_info(PFX "%s: rx length error: status %#x length %d\n",
2204 dev->name, status, length);
2205 goto resubmit;
2206
2207 error:
2208 ++dev->stats.rx_errors;
2209 if (status & GMR_FS_RX_FF_OV) {
2210 dev->stats.rx_over_errors++;
2211 goto resubmit;
2212 }
2213
2214 if (netif_msg_rx_err(sky2) && net_ratelimit())
2215 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
2216 dev->name, status, length);
2217
2218 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
2219 dev->stats.rx_length_errors++;
2220 if (status & GMR_FS_FRAGMENT)
2221 dev->stats.rx_frame_errors++;
2222 if (status & GMR_FS_CRC_ERR)
2223 dev->stats.rx_crc_errors++;
2224
2225 goto resubmit;
2226 }
2227
2228 /* Transmit complete */
2229 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2230 {
2231 struct sky2_port *sky2 = netdev_priv(dev);
2232
2233 if (netif_running(dev)) {
2234 netif_tx_lock(dev);
2235 sky2_tx_complete(sky2, last);
2236 netif_tx_unlock(dev);
2237 }
2238 }
2239
2240 /* Process status response ring */
2241 static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
2242 {
2243 int work_done = 0;
2244 unsigned rx[2] = { 0, 0 };
2245
2246 rmb();
2247 do {
2248 struct sky2_port *sky2;
2249 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2250 unsigned port = le->css & CSS_LINK_BIT;
2251 struct net_device *dev;
2252 struct sk_buff *skb;
2253 u32 status;
2254 u16 length;
2255
2256 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
2257
2258 dev = hw->dev[port];
2259 sky2 = netdev_priv(dev);
2260 length = le16_to_cpu(le->length);
2261 status = le32_to_cpu(le->status);
2262
2263 switch (le->opcode & ~HW_OWNER) {
2264 case OP_RXSTAT:
2265 ++rx[port];
2266 skb = sky2_receive(dev, length, status);
2267 if (unlikely(!skb)) {
2268 dev->stats.rx_dropped++;
2269 break;
2270 }
2271
2272 /* This chip reports checksum status differently */
2273 if (hw->flags & SKY2_HW_NEW_LE) {
2274 if (sky2->rx_csum &&
2275 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2276 (le->css & CSS_TCPUDPCSOK))
2277 skb->ip_summed = CHECKSUM_UNNECESSARY;
2278 else
2279 skb->ip_summed = CHECKSUM_NONE;
2280 }
2281
2282 skb->protocol = eth_type_trans(skb, dev);
2283 dev->stats.rx_packets++;
2284 dev->stats.rx_bytes += skb->len;
2285 dev->last_rx = jiffies;
2286
2287 #ifdef SKY2_VLAN_TAG_USED
2288 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
2289 vlan_hwaccel_receive_skb(skb,
2290 sky2->vlgrp,
2291 be16_to_cpu(sky2->rx_tag));
2292 } else
2293 #endif
2294 netif_receive_skb(skb);
2295
2296 /* Stop after net poll weight */
2297 if (++work_done >= to_do)
2298 goto exit_loop;
2299 break;
2300
2301 #ifdef SKY2_VLAN_TAG_USED
2302 case OP_RXVLAN:
2303 sky2->rx_tag = length;
2304 break;
2305
2306 case OP_RXCHKSVLAN:
2307 sky2->rx_tag = length;
2308 /* fall through */
2309 #endif
2310 case OP_RXCHKS:
2311 if (!sky2->rx_csum)
2312 break;
2313
2314 /* If this happens then driver assuming wrong format */
2315 if (unlikely(hw->flags & SKY2_HW_NEW_LE)) {
2316 if (net_ratelimit())
2317 printk(KERN_NOTICE "%s: unexpected"
2318 " checksum status\n",
2319 dev->name);
2320 break;
2321 }
2322
2323 /* Both checksum counters are programmed to start at
2324 * the same offset, so unless there is a problem they
2325 * should match. This failure is an early indication that
2326 * hardware receive checksumming won't work.
2327 */
2328 if (likely(status >> 16 == (status & 0xffff))) {
2329 skb = sky2->rx_ring[sky2->rx_next].skb;
2330 skb->ip_summed = CHECKSUM_COMPLETE;
2331 skb->csum = status & 0xffff;
2332 } else {
2333 printk(KERN_NOTICE PFX "%s: hardware receive "
2334 "checksum problem (status = %#x)\n",
2335 dev->name, status);
2336 sky2->rx_csum = 0;
2337 sky2_write32(sky2->hw,
2338 Q_ADDR(rxqaddr[port], Q_CSR),
2339 BMU_DIS_RX_CHKSUM);
2340 }
2341 break;
2342
2343 case OP_TXINDEXLE:
2344 /* TX index reports status for both ports */
2345 BUILD_BUG_ON(TX_RING_SIZE > 0x1000);
2346 sky2_tx_done(hw->dev[0], status & 0xfff);
2347 if (hw->dev[1])
2348 sky2_tx_done(hw->dev[1],
2349 ((status >> 24) & 0xff)
2350 | (u16)(length & 0xf) << 8);
2351 break;
2352
2353 default:
2354 if (net_ratelimit())
2355 printk(KERN_WARNING PFX
2356 "unknown status opcode 0x%x\n", le->opcode);
2357 }
2358 } while (hw->st_idx != idx);
2359
2360 /* Fully processed status ring so clear irq */
2361 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2362
2363 exit_loop:
2364 if (rx[0])
2365 sky2_rx_update(netdev_priv(hw->dev[0]), Q_R1);
2366
2367 if (rx[1])
2368 sky2_rx_update(netdev_priv(hw->dev[1]), Q_R2);
2369
2370 return work_done;
2371 }
2372
2373 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2374 {
2375 struct net_device *dev = hw->dev[port];
2376
2377 if (net_ratelimit())
2378 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
2379 dev->name, status);
2380
2381 if (status & Y2_IS_PAR_RD1) {
2382 if (net_ratelimit())
2383 printk(KERN_ERR PFX "%s: ram data read parity error\n",
2384 dev->name);
2385 /* Clear IRQ */
2386 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2387 }
2388
2389 if (status & Y2_IS_PAR_WR1) {
2390 if (net_ratelimit())
2391 printk(KERN_ERR PFX "%s: ram data write parity error\n",
2392 dev->name);
2393
2394 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2395 }
2396
2397 if (status & Y2_IS_PAR_MAC1) {
2398 if (net_ratelimit())
2399 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
2400 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2401 }
2402
2403 if (status & Y2_IS_PAR_RX1) {
2404 if (net_ratelimit())
2405 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
2406 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2407 }
2408
2409 if (status & Y2_IS_TCP_TXA1) {
2410 if (net_ratelimit())
2411 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
2412 dev->name);
2413 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2414 }
2415 }
2416
2417 static void sky2_hw_intr(struct sky2_hw *hw)
2418 {
2419 struct pci_dev *pdev = hw->pdev;
2420 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2421 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2422
2423 status &= hwmsk;
2424
2425 if (status & Y2_IS_TIST_OV)
2426 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2427
2428 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2429 u16 pci_err;
2430
2431 pci_read_config_word(pdev, PCI_STATUS, &pci_err);
2432 if (net_ratelimit())
2433 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
2434 pci_err);
2435
2436 pci_write_config_word(pdev, PCI_STATUS,
2437 pci_err | PCI_STATUS_ERROR_BITS);
2438 }
2439
2440 if (status & Y2_IS_PCI_EXP) {
2441 /* PCI-Express uncorrectable Error occurred */
2442 int pos = pci_find_aer_capability(hw->pdev);
2443 u32 err;
2444
2445 pci_read_config_dword(pdev, pos + PCI_ERR_UNCOR_STATUS, &err);
2446 if (net_ratelimit())
2447 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
2448 pci_cleanup_aer_uncorrect_error_status(pdev);
2449 }
2450
2451 if (status & Y2_HWE_L1_MASK)
2452 sky2_hw_error(hw, 0, status);
2453 status >>= 8;
2454 if (status & Y2_HWE_L1_MASK)
2455 sky2_hw_error(hw, 1, status);
2456 }
2457
2458 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2459 {
2460 struct net_device *dev = hw->dev[port];
2461 struct sky2_port *sky2 = netdev_priv(dev);
2462 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2463
2464 if (netif_msg_intr(sky2))
2465 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2466 dev->name, status);
2467
2468 if (status & GM_IS_RX_CO_OV)
2469 gma_read16(hw, port, GM_RX_IRQ_SRC);
2470
2471 if (status & GM_IS_TX_CO_OV)
2472 gma_read16(hw, port, GM_TX_IRQ_SRC);
2473
2474 if (status & GM_IS_RX_FF_OR) {
2475 ++dev->stats.rx_fifo_errors;
2476 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2477 }
2478
2479 if (status & GM_IS_TX_FF_UR) {
2480 ++dev->stats.tx_fifo_errors;
2481 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2482 }
2483 }
2484
2485 /* This should never happen it is a bug. */
2486 static void sky2_le_error(struct sky2_hw *hw, unsigned port,
2487 u16 q, unsigned ring_size)
2488 {
2489 struct net_device *dev = hw->dev[port];
2490 struct sky2_port *sky2 = netdev_priv(dev);
2491 unsigned idx;
2492 const u64 *le = (q == Q_R1 || q == Q_R2)
2493 ? (u64 *) sky2->rx_le : (u64 *) sky2->tx_le;
2494
2495 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2496 printk(KERN_ERR PFX "%s: descriptor error q=%#x get=%u [%llx] put=%u\n",
2497 dev->name, (unsigned) q, idx, (unsigned long long) le[idx],
2498 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2499
2500 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2501 }
2502
2503 static int sky2_rx_hung(struct net_device *dev)
2504 {
2505 struct sky2_port *sky2 = netdev_priv(dev);
2506 struct sky2_hw *hw = sky2->hw;
2507 unsigned port = sky2->port;
2508 unsigned rxq = rxqaddr[port];
2509 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2510 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2511 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2512 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2513
2514 /* If idle and MAC or PCI is stuck */
2515 if (sky2->check.last == dev->last_rx &&
2516 ((mac_rp == sky2->check.mac_rp &&
2517 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2518 /* Check if the PCI RX hang */
2519 (fifo_rp == sky2->check.fifo_rp &&
2520 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2521 printk(KERN_DEBUG PFX "%s: hung mac %d:%d fifo %d (%d:%d)\n",
2522 dev->name, mac_lev, mac_rp, fifo_lev, fifo_rp,
2523 sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2524 return 1;
2525 } else {
2526 sky2->check.last = dev->last_rx;
2527 sky2->check.mac_rp = mac_rp;
2528 sky2->check.mac_lev = mac_lev;
2529 sky2->check.fifo_rp = fifo_rp;
2530 sky2->check.fifo_lev = fifo_lev;
2531 return 0;
2532 }
2533 }
2534
2535 static void sky2_watchdog(unsigned long arg)
2536 {
2537 struct sky2_hw *hw = (struct sky2_hw *) arg;
2538
2539 /* Check for lost IRQ once a second */
2540 if (sky2_read32(hw, B0_ISRC)) {
2541 napi_schedule(&hw->napi);
2542 } else {
2543 int i, active = 0;
2544
2545 for (i = 0; i < hw->ports; i++) {
2546 struct net_device *dev = hw->dev[i];
2547 if (!netif_running(dev))
2548 continue;
2549 ++active;
2550
2551 /* For chips with Rx FIFO, check if stuck */
2552 if ((hw->flags & SKY2_HW_FIFO_HANG_CHECK) &&
2553 sky2_rx_hung(dev)) {
2554 pr_info(PFX "%s: receiver hang detected\n",
2555 dev->name);
2556 schedule_work(&hw->restart_work);
2557 return;
2558 }
2559 }
2560
2561 if (active == 0)
2562 return;
2563 }
2564
2565 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
2566 }
2567
2568 /* Hardware/software error handling */
2569 static void sky2_err_intr(struct sky2_hw *hw, u32 status)
2570 {
2571 if (net_ratelimit())
2572 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
2573
2574 if (status & Y2_IS_HW_ERR)
2575 sky2_hw_intr(hw);
2576
2577 if (status & Y2_IS_IRQ_MAC1)
2578 sky2_mac_intr(hw, 0);
2579
2580 if (status & Y2_IS_IRQ_MAC2)
2581 sky2_mac_intr(hw, 1);
2582
2583 if (status & Y2_IS_CHK_RX1)
2584 sky2_le_error(hw, 0, Q_R1, RX_LE_SIZE);
2585
2586 if (status & Y2_IS_CHK_RX2)
2587 sky2_le_error(hw, 1, Q_R2, RX_LE_SIZE);
2588
2589 if (status & Y2_IS_CHK_TXA1)
2590 sky2_le_error(hw, 0, Q_XA1, TX_RING_SIZE);
2591
2592 if (status & Y2_IS_CHK_TXA2)
2593 sky2_le_error(hw, 1, Q_XA2, TX_RING_SIZE);
2594 }
2595
2596 static int sky2_poll(struct napi_struct *napi, int work_limit)
2597 {
2598 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
2599 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2600 int work_done = 0;
2601 u16 idx;
2602
2603 if (unlikely(status & Y2_IS_ERROR))
2604 sky2_err_intr(hw, status);
2605
2606 if (status & Y2_IS_IRQ_PHY1)
2607 sky2_phy_intr(hw, 0);
2608
2609 if (status & Y2_IS_IRQ_PHY2)
2610 sky2_phy_intr(hw, 1);
2611
2612 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
2613 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
2614
2615 if (work_done >= work_limit)
2616 goto done;
2617 }
2618
2619 /* Bug/Errata workaround?
2620 * Need to kick the TX irq moderation timer.
2621 */
2622 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_START) {
2623 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
2624 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2625 }
2626 napi_complete(napi);
2627 sky2_read32(hw, B0_Y2_SP_LISR);
2628 done:
2629
2630 return work_done;
2631 }
2632
2633 static irqreturn_t sky2_intr(int irq, void *dev_id)
2634 {
2635 struct sky2_hw *hw = dev_id;
2636 u32 status;
2637
2638 /* Reading this mask interrupts as side effect */
2639 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2640 if (status == 0 || status == ~0)
2641 return IRQ_NONE;
2642
2643 prefetch(&hw->st_le[hw->st_idx]);
2644
2645 napi_schedule(&hw->napi);
2646
2647 return IRQ_HANDLED;
2648 }
2649
2650 #ifdef CONFIG_NET_POLL_CONTROLLER
2651 static void sky2_netpoll(struct net_device *dev)
2652 {
2653 struct sky2_port *sky2 = netdev_priv(dev);
2654
2655 napi_schedule(&sky2->hw->napi);
2656 }
2657 #endif
2658
2659 /* Chip internal frequency for clock calculations */
2660 static u32 sky2_mhz(const struct sky2_hw *hw)
2661 {
2662 switch (hw->chip_id) {
2663 case CHIP_ID_YUKON_EC:
2664 case CHIP_ID_YUKON_EC_U:
2665 case CHIP_ID_YUKON_EX:
2666 return 125;
2667
2668 case CHIP_ID_YUKON_FE:
2669 return 100;
2670
2671 case CHIP_ID_YUKON_FE_P:
2672 return 50;
2673
2674 case CHIP_ID_YUKON_XL:
2675 return 156;
2676
2677 default:
2678 BUG();
2679 }
2680 }
2681
2682 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2683 {
2684 return sky2_mhz(hw) * us;
2685 }
2686
2687 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2688 {
2689 return clk / sky2_mhz(hw);
2690 }
2691
2692
2693 static int __devinit sky2_init(struct sky2_hw *hw)
2694 {
2695 int rc;
2696 u8 t8;
2697
2698 /* Enable all clocks and check for bad PCI access */
2699 rc = pci_write_config_dword(hw->pdev, PCI_DEV_REG3, 0);
2700 if (rc)
2701 return rc;
2702
2703 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2704
2705 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2706 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2707
2708 switch(hw->chip_id) {
2709 case CHIP_ID_YUKON_XL:
2710 hw->flags = SKY2_HW_GIGABIT
2711 | SKY2_HW_NEWER_PHY;
2712 if (hw->chip_rev < 3)
2713 hw->flags |= SKY2_HW_FIFO_HANG_CHECK;
2714
2715 break;
2716
2717 case CHIP_ID_YUKON_EC_U:
2718 hw->flags = SKY2_HW_GIGABIT
2719 | SKY2_HW_NEWER_PHY
2720 | SKY2_HW_ADV_POWER_CTL;
2721 break;
2722
2723 case CHIP_ID_YUKON_EX:
2724 hw->flags = SKY2_HW_GIGABIT
2725 | SKY2_HW_NEWER_PHY
2726 | SKY2_HW_NEW_LE
2727 | SKY2_HW_ADV_POWER_CTL;
2728
2729 /* New transmit checksum */
2730 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
2731 hw->flags |= SKY2_HW_AUTO_TX_SUM;
2732 break;
2733
2734 case CHIP_ID_YUKON_EC:
2735 /* This rev is really old, and requires untested workarounds */
2736 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
2737 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
2738 return -EOPNOTSUPP;
2739 }
2740 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_FIFO_HANG_CHECK;
2741 break;
2742
2743 case CHIP_ID_YUKON_FE:
2744 break;
2745
2746 case CHIP_ID_YUKON_FE_P:
2747 hw->flags = SKY2_HW_NEWER_PHY
2748 | SKY2_HW_NEW_LE
2749 | SKY2_HW_AUTO_TX_SUM
2750 | SKY2_HW_ADV_POWER_CTL;
2751 break;
2752 default:
2753 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
2754 hw->chip_id);
2755 return -EOPNOTSUPP;
2756 }
2757
2758 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
2759 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
2760 hw->flags |= SKY2_HW_FIBRE_PHY;
2761
2762
2763 hw->ports = 1;
2764 t8 = sky2_read8(hw, B2_Y2_HW_RES);
2765 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
2766 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2767 ++hw->ports;
2768 }
2769
2770 return 0;
2771 }
2772
2773 static void sky2_reset(struct sky2_hw *hw)
2774 {
2775 struct pci_dev *pdev = hw->pdev;
2776 u16 status;
2777 int i, cap;
2778 u32 hwe_mask = Y2_HWE_ALL_MASK;
2779
2780 /* disable ASF */
2781 if (hw->chip_id == CHIP_ID_YUKON_EX) {
2782 status = sky2_read16(hw, HCU_CCSR);
2783 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
2784 HCU_CCSR_UC_STATE_MSK);
2785 sky2_write16(hw, HCU_CCSR, status);
2786 } else
2787 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2788 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2789
2790 /* do a SW reset */
2791 sky2_write8(hw, B0_CTST, CS_RST_SET);
2792 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2793
2794 /* allow writes to PCI config */
2795 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2796
2797 /* clear PCI errors, if any */
2798 pci_read_config_word(pdev, PCI_STATUS, &status);
2799 status |= PCI_STATUS_ERROR_BITS;
2800 pci_write_config_word(pdev, PCI_STATUS, status);
2801
2802 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2803
2804 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
2805 if (cap) {
2806 /* Check for advanced error reporting */
2807 pci_cleanup_aer_uncorrect_error_status(pdev);
2808 pci_cleanup_aer_correct_error_status(pdev);
2809
2810 /* If error bit is stuck on ignore it */
2811 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
2812 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
2813
2814 else if (pci_enable_pcie_error_reporting(pdev))
2815 hwe_mask |= Y2_IS_PCI_EXP;
2816 }
2817
2818 sky2_power_on(hw);
2819
2820 for (i = 0; i < hw->ports; i++) {
2821 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2822 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2823
2824 if (hw->chip_id == CHIP_ID_YUKON_EX)
2825 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
2826 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
2827 | GMC_BYP_RETR_ON);
2828 }
2829
2830 /* Clear I2C IRQ noise */
2831 sky2_write32(hw, B2_I2C_IRQ, 1);
2832
2833 /* turn off hardware timer (unused) */
2834 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2835 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
2836
2837 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
2838
2839 /* Turn off descriptor polling */
2840 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
2841
2842 /* Turn off receive timestamp */
2843 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
2844 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2845
2846 /* enable the Tx Arbiters */
2847 for (i = 0; i < hw->ports; i++)
2848 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
2849
2850 /* Initialize ram interface */
2851 for (i = 0; i < hw->ports; i++) {
2852 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
2853
2854 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
2855 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
2856 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
2857 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
2858 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
2859 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
2860 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
2861 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
2862 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
2863 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
2864 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
2865 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
2866 }
2867
2868 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
2869
2870 for (i = 0; i < hw->ports; i++)
2871 sky2_gmac_reset(hw, i);
2872
2873 memset(hw->st_le, 0, STATUS_LE_BYTES);
2874 hw->st_idx = 0;
2875
2876 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
2877 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
2878
2879 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
2880 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
2881
2882 /* Set the list last index */
2883 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
2884
2885 sky2_write16(hw, STAT_TX_IDX_TH, 10);
2886 sky2_write8(hw, STAT_FIFO_WM, 16);
2887
2888 /* set Status-FIFO ISR watermark */
2889 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
2890 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
2891 else
2892 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
2893
2894 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
2895 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
2896 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
2897
2898 /* enable status unit */
2899 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
2900
2901 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2902 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2903 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2904 }
2905
2906 static void sky2_restart(struct work_struct *work)
2907 {
2908 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
2909 struct net_device *dev;
2910 int i, err;
2911
2912 rtnl_lock();
2913 sky2_write32(hw, B0_IMSK, 0);
2914 sky2_read32(hw, B0_IMSK);
2915 napi_disable(&hw->napi);
2916
2917 for (i = 0; i < hw->ports; i++) {
2918 dev = hw->dev[i];
2919 if (netif_running(dev))
2920 sky2_down(dev);
2921 }
2922
2923 sky2_reset(hw);
2924 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
2925 napi_enable(&hw->napi);
2926
2927 for (i = 0; i < hw->ports; i++) {
2928 dev = hw->dev[i];
2929 if (netif_running(dev)) {
2930 err = sky2_up(dev);
2931 if (err) {
2932 printk(KERN_INFO PFX "%s: could not restart %d\n",
2933 dev->name, err);
2934 dev_close(dev);
2935 }
2936 }
2937 }
2938
2939 rtnl_unlock();
2940 }
2941
2942 static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
2943 {
2944 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
2945 }
2946
2947 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2948 {
2949 const struct sky2_port *sky2 = netdev_priv(dev);
2950
2951 wol->supported = sky2_wol_supported(sky2->hw);
2952 wol->wolopts = sky2->wol;
2953 }
2954
2955 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2956 {
2957 struct sky2_port *sky2 = netdev_priv(dev);
2958 struct sky2_hw *hw = sky2->hw;
2959
2960 if (wol->wolopts & ~sky2_wol_supported(sky2->hw))
2961 return -EOPNOTSUPP;
2962
2963 sky2->wol = wol->wolopts;
2964
2965 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
2966 hw->chip_id == CHIP_ID_YUKON_EX ||
2967 hw->chip_id == CHIP_ID_YUKON_FE_P)
2968 sky2_write32(hw, B0_CTST, sky2->wol
2969 ? Y2_HW_WOL_ON : Y2_HW_WOL_OFF);
2970
2971 if (!netif_running(dev))
2972 sky2_wol_init(sky2);
2973 return 0;
2974 }
2975
2976 static u32 sky2_supported_modes(const struct sky2_hw *hw)
2977 {
2978 if (sky2_is_copper(hw)) {
2979 u32 modes = SUPPORTED_10baseT_Half
2980 | SUPPORTED_10baseT_Full
2981 | SUPPORTED_100baseT_Half
2982 | SUPPORTED_100baseT_Full
2983 | SUPPORTED_Autoneg | SUPPORTED_TP;
2984
2985 if (hw->flags & SKY2_HW_GIGABIT)
2986 modes |= SUPPORTED_1000baseT_Half
2987 | SUPPORTED_1000baseT_Full;
2988 return modes;
2989 } else
2990 return SUPPORTED_1000baseT_Half
2991 | SUPPORTED_1000baseT_Full
2992 | SUPPORTED_Autoneg
2993 | SUPPORTED_FIBRE;
2994 }
2995
2996 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
2997 {
2998 struct sky2_port *sky2 = netdev_priv(dev);
2999 struct sky2_hw *hw = sky2->hw;
3000
3001 ecmd->transceiver = XCVR_INTERNAL;
3002 ecmd->supported = sky2_supported_modes(hw);
3003 ecmd->phy_address = PHY_ADDR_MARV;
3004 if (sky2_is_copper(hw)) {
3005 ecmd->port = PORT_TP;
3006 ecmd->speed = sky2->speed;
3007 } else {
3008 ecmd->speed = SPEED_1000;
3009 ecmd->port = PORT_FIBRE;
3010 }
3011
3012 ecmd->advertising = sky2->advertising;
3013 ecmd->autoneg = sky2->autoneg;
3014 ecmd->duplex = sky2->duplex;
3015 return 0;
3016 }
3017
3018 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3019 {
3020 struct sky2_port *sky2 = netdev_priv(dev);
3021 const struct sky2_hw *hw = sky2->hw;
3022 u32 supported = sky2_supported_modes(hw);
3023
3024 if (ecmd->autoneg == AUTONEG_ENABLE) {
3025 ecmd->advertising = supported;
3026 sky2->duplex = -1;
3027 sky2->speed = -1;
3028 } else {
3029 u32 setting;
3030
3031 switch (ecmd->speed) {
3032 case SPEED_1000:
3033 if (ecmd->duplex == DUPLEX_FULL)
3034 setting = SUPPORTED_1000baseT_Full;
3035 else if (ecmd->duplex == DUPLEX_HALF)
3036 setting = SUPPORTED_1000baseT_Half;
3037 else
3038 return -EINVAL;
3039 break;
3040 case SPEED_100:
3041 if (ecmd->duplex == DUPLEX_FULL)
3042 setting = SUPPORTED_100baseT_Full;
3043 else if (ecmd->duplex == DUPLEX_HALF)
3044 setting = SUPPORTED_100baseT_Half;
3045 else
3046 return -EINVAL;
3047 break;
3048
3049 case SPEED_10:
3050 if (ecmd->duplex == DUPLEX_FULL)
3051 setting = SUPPORTED_10baseT_Full;
3052 else if (ecmd->duplex == DUPLEX_HALF)
3053 setting = SUPPORTED_10baseT_Half;
3054 else
3055 return -EINVAL;
3056 break;
3057 default:
3058 return -EINVAL;
3059 }
3060
3061 if ((setting & supported) == 0)
3062 return -EINVAL;
3063
3064 sky2->speed = ecmd->speed;
3065 sky2->duplex = ecmd->duplex;
3066 }
3067
3068 sky2->autoneg = ecmd->autoneg;
3069 sky2->advertising = ecmd->advertising;
3070
3071 if (netif_running(dev)) {
3072 sky2_phy_reinit(sky2);
3073 sky2_set_multicast(dev);
3074 }
3075
3076 return 0;
3077 }
3078
3079 static void sky2_get_drvinfo(struct net_device *dev,
3080 struct ethtool_drvinfo *info)
3081 {
3082 struct sky2_port *sky2 = netdev_priv(dev);
3083
3084 strcpy(info->driver, DRV_NAME);
3085 strcpy(info->version, DRV_VERSION);
3086 strcpy(info->fw_version, "N/A");
3087 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
3088 }
3089
3090 static const struct sky2_stat {
3091 char name[ETH_GSTRING_LEN];
3092 u16 offset;
3093 } sky2_stats[] = {
3094 { "tx_bytes", GM_TXO_OK_HI },
3095 { "rx_bytes", GM_RXO_OK_HI },
3096 { "tx_broadcast", GM_TXF_BC_OK },
3097 { "rx_broadcast", GM_RXF_BC_OK },
3098 { "tx_multicast", GM_TXF_MC_OK },
3099 { "rx_multicast", GM_RXF_MC_OK },
3100 { "tx_unicast", GM_TXF_UC_OK },
3101 { "rx_unicast", GM_RXF_UC_OK },
3102 { "tx_mac_pause", GM_TXF_MPAUSE },
3103 { "rx_mac_pause", GM_RXF_MPAUSE },
3104 { "collisions", GM_TXF_COL },
3105 { "late_collision",GM_TXF_LAT_COL },
3106 { "aborted", GM_TXF_ABO_COL },
3107 { "single_collisions", GM_TXF_SNG_COL },
3108 { "multi_collisions", GM_TXF_MUL_COL },
3109
3110 { "rx_short", GM_RXF_SHT },
3111 { "rx_runt", GM_RXE_FRAG },
3112 { "rx_64_byte_packets", GM_RXF_64B },
3113 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3114 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3115 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3116 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3117 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3118 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3119 { "rx_too_long", GM_RXF_LNG_ERR },
3120 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3121 { "rx_jabber", GM_RXF_JAB_PKT },
3122 { "rx_fcs_error", GM_RXF_FCS_ERR },
3123
3124 { "tx_64_byte_packets", GM_TXF_64B },
3125 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3126 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3127 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3128 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3129 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3130 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3131 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3132 };
3133
3134 static u32 sky2_get_rx_csum(struct net_device *dev)
3135 {
3136 struct sky2_port *sky2 = netdev_priv(dev);
3137
3138 return sky2->rx_csum;
3139 }
3140
3141 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
3142 {
3143 struct sky2_port *sky2 = netdev_priv(dev);
3144
3145 sky2->rx_csum = data;
3146
3147 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
3148 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
3149
3150 return 0;
3151 }
3152
3153 static u32 sky2_get_msglevel(struct net_device *netdev)
3154 {
3155 struct sky2_port *sky2 = netdev_priv(netdev);
3156 return sky2->msg_enable;
3157 }
3158
3159 static int sky2_nway_reset(struct net_device *dev)
3160 {
3161 struct sky2_port *sky2 = netdev_priv(dev);
3162
3163 if (!netif_running(dev) || sky2->autoneg != AUTONEG_ENABLE)
3164 return -EINVAL;
3165
3166 sky2_phy_reinit(sky2);
3167 sky2_set_multicast(dev);
3168
3169 return 0;
3170 }
3171
3172 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3173 {
3174 struct sky2_hw *hw = sky2->hw;
3175 unsigned port = sky2->port;
3176 int i;
3177
3178 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
3179 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
3180 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
3181 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
3182
3183 for (i = 2; i < count; i++)
3184 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
3185 }
3186
3187 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3188 {
3189 struct sky2_port *sky2 = netdev_priv(netdev);
3190 sky2->msg_enable = value;
3191 }
3192
3193 static int sky2_get_sset_count(struct net_device *dev, int sset)
3194 {
3195 switch (sset) {
3196 case ETH_SS_STATS:
3197 return ARRAY_SIZE(sky2_stats);
3198 default:
3199 return -EOPNOTSUPP;
3200 }
3201 }
3202
3203 static void sky2_get_ethtool_stats(struct net_device *dev,
3204 struct ethtool_stats *stats, u64 * data)
3205 {
3206 struct sky2_port *sky2 = netdev_priv(dev);
3207
3208 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3209 }
3210
3211 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3212 {
3213 int i;
3214
3215 switch (stringset) {
3216 case ETH_SS_STATS:
3217 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3218 memcpy(data + i * ETH_GSTRING_LEN,
3219 sky2_stats[i].name, ETH_GSTRING_LEN);
3220 break;
3221 }
3222 }
3223
3224 static int sky2_set_mac_address(struct net_device *dev, void *p)
3225 {
3226 struct sky2_port *sky2 = netdev_priv(dev);
3227 struct sky2_hw *hw = sky2->hw;
3228 unsigned port = sky2->port;
3229 const struct sockaddr *addr = p;
3230
3231 if (!is_valid_ether_addr(addr->sa_data))
3232 return -EADDRNOTAVAIL;
3233
3234 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3235 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3236 dev->dev_addr, ETH_ALEN);
3237 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3238 dev->dev_addr, ETH_ALEN);
3239
3240 /* virtual address for data */
3241 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3242
3243 /* physical address: used for pause frames */
3244 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3245
3246 return 0;
3247 }
3248
3249 static void inline sky2_add_filter(u8 filter[8], const u8 *addr)
3250 {
3251 u32 bit;
3252
3253 bit = ether_crc(ETH_ALEN, addr) & 63;
3254 filter[bit >> 3] |= 1 << (bit & 7);
3255 }
3256
3257 static void sky2_set_multicast(struct net_device *dev)
3258 {
3259 struct sky2_port *sky2 = netdev_priv(dev);
3260 struct sky2_hw *hw = sky2->hw;
3261 unsigned port = sky2->port;
3262 struct dev_mc_list *list = dev->mc_list;
3263 u16 reg;
3264 u8 filter[8];
3265 int rx_pause;
3266 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3267
3268 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3269 memset(filter, 0, sizeof(filter));
3270
3271 reg = gma_read16(hw, port, GM_RX_CTRL);
3272 reg |= GM_RXCR_UCF_ENA;
3273
3274 if (dev->flags & IFF_PROMISC) /* promiscuous */
3275 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3276 else if (dev->flags & IFF_ALLMULTI)
3277 memset(filter, 0xff, sizeof(filter));
3278 else if (dev->mc_count == 0 && !rx_pause)
3279 reg &= ~GM_RXCR_MCF_ENA;
3280 else {
3281 int i;
3282 reg |= GM_RXCR_MCF_ENA;
3283
3284 if (rx_pause)
3285 sky2_add_filter(filter, pause_mc_addr);
3286
3287 for (i = 0; list && i < dev->mc_count; i++, list = list->next)
3288 sky2_add_filter(filter, list->dmi_addr);
3289 }
3290
3291 gma_write16(hw, port, GM_MC_ADDR_H1,
3292 (u16) filter[0] | ((u16) filter[1] << 8));
3293 gma_write16(hw, port, GM_MC_ADDR_H2,
3294 (u16) filter[2] | ((u16) filter[3] << 8));
3295 gma_write16(hw, port, GM_MC_ADDR_H3,
3296 (u16) filter[4] | ((u16) filter[5] << 8));
3297 gma_write16(hw, port, GM_MC_ADDR_H4,
3298 (u16) filter[6] | ((u16) filter[7] << 8));
3299
3300 gma_write16(hw, port, GM_RX_CTRL, reg);
3301 }
3302
3303 /* Can have one global because blinking is controlled by
3304 * ethtool and that is always under RTNL mutex
3305 */
3306 static void sky2_led(struct sky2_hw *hw, unsigned port, int on)
3307 {
3308 u16 pg;
3309
3310 switch (hw->chip_id) {
3311 case CHIP_ID_YUKON_XL:
3312 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3313 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3314 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3315 on ? (PHY_M_LEDC_LOS_CTRL(1) |
3316 PHY_M_LEDC_INIT_CTRL(7) |
3317 PHY_M_LEDC_STA1_CTRL(7) |
3318 PHY_M_LEDC_STA0_CTRL(7))
3319 : 0);
3320
3321 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3322 break;
3323
3324 default:
3325 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
3326 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3327 on ? PHY_M_LED_ALL : 0);
3328 }
3329 }
3330
3331 /* blink LED's for finding board */
3332 static int sky2_phys_id(struct net_device *dev, u32 data)
3333 {
3334 struct sky2_port *sky2 = netdev_priv(dev);
3335 struct sky2_hw *hw = sky2->hw;
3336 unsigned port = sky2->port;
3337 u16 ledctrl, ledover = 0;
3338 long ms;
3339 int interrupted;
3340 int onoff = 1;
3341
3342 if (!data || data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ))
3343 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT);
3344 else
3345 ms = data * 1000;
3346
3347 /* save initial values */
3348 spin_lock_bh(&sky2->phy_lock);
3349 if (hw->chip_id == CHIP_ID_YUKON_XL) {
3350 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3351 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3352 ledctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
3353 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3354 } else {
3355 ledctrl = gm_phy_read(hw, port, PHY_MARV_LED_CTRL);
3356 ledover = gm_phy_read(hw, port, PHY_MARV_LED_OVER);
3357 }
3358
3359 interrupted = 0;
3360 while (!interrupted && ms > 0) {
3361 sky2_led(hw, port, onoff);
3362 onoff = !onoff;
3363
3364 spin_unlock_bh(&sky2->phy_lock);
3365 interrupted = msleep_interruptible(250);
3366 spin_lock_bh(&sky2->phy_lock);
3367
3368 ms -= 250;
3369 }
3370
3371 /* resume regularly scheduled programming */
3372 if (hw->chip_id == CHIP_ID_YUKON_XL) {
3373 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3374 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3375 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ledctrl);
3376 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3377 } else {
3378 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
3379 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
3380 }
3381 spin_unlock_bh(&sky2->phy_lock);
3382
3383 return 0;
3384 }
3385
3386 static void sky2_get_pauseparam(struct net_device *dev,
3387 struct ethtool_pauseparam *ecmd)
3388 {
3389 struct sky2_port *sky2 = netdev_priv(dev);
3390
3391 switch (sky2->flow_mode) {
3392 case FC_NONE:
3393 ecmd->tx_pause = ecmd->rx_pause = 0;
3394 break;
3395 case FC_TX:
3396 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
3397 break;
3398 case FC_RX:
3399 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
3400 break;
3401 case FC_BOTH:
3402 ecmd->tx_pause = ecmd->rx_pause = 1;
3403 }
3404
3405 ecmd->autoneg = sky2->autoneg;
3406 }
3407
3408 static int sky2_set_pauseparam(struct net_device *dev,
3409 struct ethtool_pauseparam *ecmd)
3410 {
3411 struct sky2_port *sky2 = netdev_priv(dev);
3412
3413 sky2->autoneg = ecmd->autoneg;
3414 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
3415
3416 if (netif_running(dev))
3417 sky2_phy_reinit(sky2);
3418
3419 return 0;
3420 }
3421
3422 static int sky2_get_coalesce(struct net_device *dev,
3423 struct ethtool_coalesce *ecmd)
3424 {
3425 struct sky2_port *sky2 = netdev_priv(dev);
3426 struct sky2_hw *hw = sky2->hw;
3427
3428 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
3429 ecmd->tx_coalesce_usecs = 0;
3430 else {
3431 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
3432 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
3433 }
3434 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
3435
3436 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
3437 ecmd->rx_coalesce_usecs = 0;
3438 else {
3439 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
3440 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
3441 }
3442 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
3443
3444 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
3445 ecmd->rx_coalesce_usecs_irq = 0;
3446 else {
3447 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
3448 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
3449 }
3450
3451 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
3452
3453 return 0;
3454 }
3455
3456 /* Note: this affect both ports */
3457 static int sky2_set_coalesce(struct net_device *dev,
3458 struct ethtool_coalesce *ecmd)
3459 {
3460 struct sky2_port *sky2 = netdev_priv(dev);
3461 struct sky2_hw *hw = sky2->hw;
3462 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
3463
3464 if (ecmd->tx_coalesce_usecs > tmax ||
3465 ecmd->rx_coalesce_usecs > tmax ||
3466 ecmd->rx_coalesce_usecs_irq > tmax)
3467 return -EINVAL;
3468
3469 if (ecmd->tx_max_coalesced_frames >= TX_RING_SIZE-1)
3470 return -EINVAL;
3471 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
3472 return -EINVAL;
3473 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
3474 return -EINVAL;
3475
3476 if (ecmd->tx_coalesce_usecs == 0)
3477 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
3478 else {
3479 sky2_write32(hw, STAT_TX_TIMER_INI,
3480 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
3481 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3482 }
3483 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
3484
3485 if (ecmd->rx_coalesce_usecs == 0)
3486 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
3487 else {
3488 sky2_write32(hw, STAT_LEV_TIMER_INI,
3489 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
3490 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3491 }
3492 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
3493
3494 if (ecmd->rx_coalesce_usecs_irq == 0)
3495 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
3496 else {
3497 sky2_write32(hw, STAT_ISR_TIMER_INI,
3498 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
3499 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3500 }
3501 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
3502 return 0;
3503 }
3504
3505 static void sky2_get_ringparam(struct net_device *dev,
3506 struct ethtool_ringparam *ering)
3507 {
3508 struct sky2_port *sky2 = netdev_priv(dev);
3509
3510 ering->rx_max_pending = RX_MAX_PENDING;
3511 ering->rx_mini_max_pending = 0;
3512 ering->rx_jumbo_max_pending = 0;
3513 ering->tx_max_pending = TX_RING_SIZE - 1;
3514
3515 ering->rx_pending = sky2->rx_pending;
3516 ering->rx_mini_pending = 0;
3517 ering->rx_jumbo_pending = 0;
3518 ering->tx_pending = sky2->tx_pending;
3519 }
3520
3521 static int sky2_set_ringparam(struct net_device *dev,
3522 struct ethtool_ringparam *ering)
3523 {
3524 struct sky2_port *sky2 = netdev_priv(dev);
3525 int err = 0;
3526
3527 if (ering->rx_pending > RX_MAX_PENDING ||
3528 ering->rx_pending < 8 ||
3529 ering->tx_pending < MAX_SKB_TX_LE ||
3530 ering->tx_pending > TX_RING_SIZE - 1)
3531 return -EINVAL;
3532
3533 if (netif_running(dev))
3534 sky2_down(dev);
3535
3536 sky2->rx_pending = ering->rx_pending;
3537 sky2->tx_pending = ering->tx_pending;
3538
3539 if (netif_running(dev)) {
3540 err = sky2_up(dev);
3541 if (err)
3542 dev_close(dev);
3543 else
3544 sky2_set_multicast(dev);
3545 }
3546
3547 return err;
3548 }
3549
3550 static int sky2_get_regs_len(struct net_device *dev)
3551 {
3552 return 0x4000;
3553 }
3554
3555 /*
3556 * Returns copy of control register region
3557 * Note: ethtool_get_regs always provides full size (16k) buffer
3558 */
3559 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
3560 void *p)
3561 {
3562 const struct sky2_port *sky2 = netdev_priv(dev);
3563 const void __iomem *io = sky2->hw->regs;
3564 unsigned int b;
3565
3566 regs->version = 1;
3567
3568 for (b = 0; b < 128; b++) {
3569 /* This complicated switch statement is to make sure and
3570 * only access regions that are unreserved.
3571 * Some blocks are only valid on dual port cards.
3572 * and block 3 has some special diagnostic registers that
3573 * are poison.
3574 */
3575 switch (b) {
3576 case 3:
3577 /* skip diagnostic ram region */
3578 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
3579 break;
3580
3581 /* dual port cards only */
3582 case 5: /* Tx Arbiter 2 */
3583 case 9: /* RX2 */
3584 case 14 ... 15: /* TX2 */
3585 case 17: case 19: /* Ram Buffer 2 */
3586 case 22 ... 23: /* Tx Ram Buffer 2 */
3587 case 25: /* Rx MAC Fifo 1 */
3588 case 27: /* Tx MAC Fifo 2 */
3589 case 31: /* GPHY 2 */
3590 case 40 ... 47: /* Pattern Ram 2 */
3591 case 52: case 54: /* TCP Segmentation 2 */
3592 case 112 ... 116: /* GMAC 2 */
3593 if (sky2->hw->ports == 1)
3594 goto reserved;
3595 /* fall through */
3596 case 0: /* Control */
3597 case 2: /* Mac address */
3598 case 4: /* Tx Arbiter 1 */
3599 case 7: /* PCI express reg */
3600 case 8: /* RX1 */
3601 case 12 ... 13: /* TX1 */
3602 case 16: case 18:/* Rx Ram Buffer 1 */
3603 case 20 ... 21: /* Tx Ram Buffer 1 */
3604 case 24: /* Rx MAC Fifo 1 */
3605 case 26: /* Tx MAC Fifo 1 */
3606 case 28 ... 29: /* Descriptor and status unit */
3607 case 30: /* GPHY 1*/
3608 case 32 ... 39: /* Pattern Ram 1 */
3609 case 48: case 50: /* TCP Segmentation 1 */
3610 case 56 ... 60: /* PCI space */
3611 case 80 ... 84: /* GMAC 1 */
3612 memcpy_fromio(p, io, 128);
3613 break;
3614 default:
3615 reserved:
3616 memset(p, 0, 128);
3617 }
3618
3619 p += 128;
3620 io += 128;
3621 }
3622 }
3623
3624 /* In order to do Jumbo packets on these chips, need to turn off the
3625 * transmit store/forward. Therefore checksum offload won't work.
3626 */
3627 static int no_tx_offload(struct net_device *dev)
3628 {
3629 const struct sky2_port *sky2 = netdev_priv(dev);
3630 const struct sky2_hw *hw = sky2->hw;
3631
3632 return dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U;
3633 }
3634
3635 static int sky2_set_tx_csum(struct net_device *dev, u32 data)
3636 {
3637 if (data && no_tx_offload(dev))
3638 return -EINVAL;
3639
3640 return ethtool_op_set_tx_csum(dev, data);
3641 }
3642
3643
3644 static int sky2_set_tso(struct net_device *dev, u32 data)
3645 {
3646 if (data && no_tx_offload(dev))
3647 return -EINVAL;
3648
3649 return ethtool_op_set_tso(dev, data);
3650 }
3651
3652 static int sky2_get_eeprom_len(struct net_device *dev)
3653 {
3654 struct sky2_port *sky2 = netdev_priv(dev);
3655 u16 reg2;
3656
3657 pci_read_config_word(sky2->hw->pdev, PCI_DEV_REG2, &reg2);
3658 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
3659 }
3660
3661 static u32 sky2_vpd_read(struct pci_dev *pdev, int cap, u16 offset)
3662 {
3663 u32 val;
3664
3665 pci_write_config_word(pdev, cap + PCI_VPD_ADDR, offset);
3666
3667 do {
3668 pci_read_config_word(pdev, cap + PCI_VPD_ADDR, &offset);
3669 } while (!(offset & PCI_VPD_ADDR_F));
3670
3671 pci_read_config_dword(pdev, cap + PCI_VPD_DATA, &val);
3672 return val;
3673 }
3674
3675 static void sky2_vpd_write(struct pci_dev *pdev, int cap, u16 offset, u32 val)
3676 {
3677 pci_write_config_word(pdev, cap + PCI_VPD_DATA, val);
3678 pci_write_config_dword(pdev, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
3679 do {
3680 pci_read_config_word(pdev, cap + PCI_VPD_ADDR, &offset);
3681 } while (offset & PCI_VPD_ADDR_F);
3682 }
3683
3684 static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
3685 u8 *data)
3686 {
3687 struct sky2_port *sky2 = netdev_priv(dev);
3688 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
3689 int length = eeprom->len;
3690 u16 offset = eeprom->offset;
3691
3692 if (!cap)
3693 return -EINVAL;
3694
3695 eeprom->magic = SKY2_EEPROM_MAGIC;
3696
3697 while (length > 0) {
3698 u32 val = sky2_vpd_read(sky2->hw->pdev, cap, offset);
3699 int n = min_t(int, length, sizeof(val));
3700
3701 memcpy(data, &val, n);
3702 length -= n;
3703 data += n;
3704 offset += n;
3705 }
3706 return 0;
3707 }
3708
3709 static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
3710 u8 *data)
3711 {
3712 struct sky2_port *sky2 = netdev_priv(dev);
3713 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
3714 int length = eeprom->len;
3715 u16 offset = eeprom->offset;
3716
3717 if (!cap)
3718 return -EINVAL;
3719
3720 if (eeprom->magic != SKY2_EEPROM_MAGIC)
3721 return -EINVAL;
3722
3723 while (length > 0) {
3724 u32 val;
3725 int n = min_t(int, length, sizeof(val));
3726
3727 if (n < sizeof(val))
3728 val = sky2_vpd_read(sky2->hw->pdev, cap, offset);
3729 memcpy(&val, data, n);
3730
3731 sky2_vpd_write(sky2->hw->pdev, cap, offset, val);
3732
3733 length -= n;
3734 data += n;
3735 offset += n;
3736 }
3737 return 0;
3738 }
3739
3740
3741 static const struct ethtool_ops sky2_ethtool_ops = {
3742 .get_settings = sky2_get_settings,
3743 .set_settings = sky2_set_settings,
3744 .get_drvinfo = sky2_get_drvinfo,
3745 .get_wol = sky2_get_wol,
3746 .set_wol = sky2_set_wol,
3747 .get_msglevel = sky2_get_msglevel,
3748 .set_msglevel = sky2_set_msglevel,
3749 .nway_reset = sky2_nway_reset,
3750 .get_regs_len = sky2_get_regs_len,
3751 .get_regs = sky2_get_regs,
3752 .get_link = ethtool_op_get_link,
3753 .get_eeprom_len = sky2_get_eeprom_len,
3754 .get_eeprom = sky2_get_eeprom,
3755 .set_eeprom = sky2_set_eeprom,
3756 .set_sg = ethtool_op_set_sg,
3757 .set_tx_csum = sky2_set_tx_csum,
3758 .set_tso = sky2_set_tso,
3759 .get_rx_csum = sky2_get_rx_csum,
3760 .set_rx_csum = sky2_set_rx_csum,
3761 .get_strings = sky2_get_strings,
3762 .get_coalesce = sky2_get_coalesce,
3763 .set_coalesce = sky2_set_coalesce,
3764 .get_ringparam = sky2_get_ringparam,
3765 .set_ringparam = sky2_set_ringparam,
3766 .get_pauseparam = sky2_get_pauseparam,
3767 .set_pauseparam = sky2_set_pauseparam,
3768 .phys_id = sky2_phys_id,
3769 .get_sset_count = sky2_get_sset_count,
3770 .get_ethtool_stats = sky2_get_ethtool_stats,
3771 };
3772
3773 #ifdef CONFIG_SKY2_DEBUG
3774
3775 static struct dentry *sky2_debug;
3776
3777 static int sky2_debug_show(struct seq_file *seq, void *v)
3778 {
3779 struct net_device *dev = seq->private;
3780 const struct sky2_port *sky2 = netdev_priv(dev);
3781 struct sky2_hw *hw = sky2->hw;
3782 unsigned port = sky2->port;
3783 unsigned idx, last;
3784 int sop;
3785
3786 if (!netif_running(dev))
3787 return -ENETDOWN;
3788
3789 seq_printf(seq, "IRQ src=%x mask=%x control=%x\n",
3790 sky2_read32(hw, B0_ISRC),
3791 sky2_read32(hw, B0_IMSK),
3792 sky2_read32(hw, B0_Y2_SP_ICR));
3793
3794 napi_disable(&hw->napi);
3795 last = sky2_read16(hw, STAT_PUT_IDX);
3796
3797 if (hw->st_idx == last)
3798 seq_puts(seq, "Status ring (empty)\n");
3799 else {
3800 seq_puts(seq, "Status ring\n");
3801 for (idx = hw->st_idx; idx != last && idx < STATUS_RING_SIZE;
3802 idx = RING_NEXT(idx, STATUS_RING_SIZE)) {
3803 const struct sky2_status_le *le = hw->st_le + idx;
3804 seq_printf(seq, "[%d] %#x %d %#x\n",
3805 idx, le->opcode, le->length, le->status);
3806 }
3807 seq_puts(seq, "\n");
3808 }
3809
3810 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
3811 sky2->tx_cons, sky2->tx_prod,
3812 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
3813 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
3814
3815 /* Dump contents of tx ring */
3816 sop = 1;
3817 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < TX_RING_SIZE;
3818 idx = RING_NEXT(idx, TX_RING_SIZE)) {
3819 const struct sky2_tx_le *le = sky2->tx_le + idx;
3820 u32 a = le32_to_cpu(le->addr);
3821
3822 if (sop)
3823 seq_printf(seq, "%u:", idx);
3824 sop = 0;
3825
3826 switch(le->opcode & ~HW_OWNER) {
3827 case OP_ADDR64:
3828 seq_printf(seq, " %#x:", a);
3829 break;
3830 case OP_LRGLEN:
3831 seq_printf(seq, " mtu=%d", a);
3832 break;
3833 case OP_VLAN:
3834 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
3835 break;
3836 case OP_TCPLISW:
3837 seq_printf(seq, " csum=%#x", a);
3838 break;
3839 case OP_LARGESEND:
3840 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
3841 break;
3842 case OP_PACKET:
3843 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
3844 break;
3845 case OP_BUFFER:
3846 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
3847 break;
3848 default:
3849 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
3850 a, le16_to_cpu(le->length));
3851 }
3852
3853 if (le->ctrl & EOP) {
3854 seq_putc(seq, '\n');
3855 sop = 1;
3856 }
3857 }
3858
3859 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
3860 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
3861 last = sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
3862 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
3863
3864 napi_enable(&hw->napi);
3865 return 0;
3866 }
3867
3868 static int sky2_debug_open(struct inode *inode, struct file *file)
3869 {
3870 return single_open(file, sky2_debug_show, inode->i_private);
3871 }
3872
3873 static const struct file_operations sky2_debug_fops = {
3874 .owner = THIS_MODULE,
3875 .open = sky2_debug_open,
3876 .read = seq_read,
3877 .llseek = seq_lseek,
3878 .release = single_release,
3879 };
3880
3881 /*
3882 * Use network device events to create/remove/rename
3883 * debugfs file entries
3884 */
3885 static int sky2_device_event(struct notifier_block *unused,
3886 unsigned long event, void *ptr)
3887 {
3888 struct net_device *dev = ptr;
3889 struct sky2_port *sky2 = netdev_priv(dev);
3890
3891 if (dev->open != sky2_up || !sky2_debug)
3892 return NOTIFY_DONE;
3893
3894 switch(event) {
3895 case NETDEV_CHANGENAME:
3896 if (sky2->debugfs) {
3897 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
3898 sky2_debug, dev->name);
3899 }
3900 break;
3901
3902 case NETDEV_GOING_DOWN:
3903 if (sky2->debugfs) {
3904 printk(KERN_DEBUG PFX "%s: remove debugfs\n",
3905 dev->name);
3906 debugfs_remove(sky2->debugfs);
3907 sky2->debugfs = NULL;
3908 }
3909 break;
3910
3911 case NETDEV_UP:
3912 sky2->debugfs = debugfs_create_file(dev->name, S_IRUGO,
3913 sky2_debug, dev,
3914 &sky2_debug_fops);
3915 if (IS_ERR(sky2->debugfs))
3916 sky2->debugfs = NULL;
3917 }
3918
3919 return NOTIFY_DONE;
3920 }
3921
3922 static struct notifier_block sky2_notifier = {
3923 .notifier_call = sky2_device_event,
3924 };
3925
3926
3927 static __init void sky2_debug_init(void)
3928 {
3929 struct dentry *ent;
3930
3931 ent = debugfs_create_dir("sky2", NULL);
3932 if (!ent || IS_ERR(ent))
3933 return;
3934
3935 sky2_debug = ent;
3936 register_netdevice_notifier(&sky2_notifier);
3937 }
3938
3939 static __exit void sky2_debug_cleanup(void)
3940 {
3941 if (sky2_debug) {
3942 unregister_netdevice_notifier(&sky2_notifier);
3943 debugfs_remove(sky2_debug);
3944 sky2_debug = NULL;
3945 }
3946 }
3947
3948 #else
3949 #define sky2_debug_init()
3950 #define sky2_debug_cleanup()
3951 #endif
3952
3953
3954 /* Initialize network device */
3955 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
3956 unsigned port,
3957 int highmem, int wol)
3958 {
3959 struct sky2_port *sky2;
3960 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
3961
3962 if (!dev) {
3963 dev_err(&hw->pdev->dev, "etherdev alloc failed\n");
3964 return NULL;
3965 }
3966
3967 SET_NETDEV_DEV(dev, &hw->pdev->dev);
3968 dev->irq = hw->pdev->irq;
3969 dev->open = sky2_up;
3970 dev->stop = sky2_down;
3971 dev->do_ioctl = sky2_ioctl;
3972 dev->hard_start_xmit = sky2_xmit_frame;
3973 dev->set_multicast_list = sky2_set_multicast;
3974 dev->set_mac_address = sky2_set_mac_address;
3975 dev->change_mtu = sky2_change_mtu;
3976 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
3977 dev->tx_timeout = sky2_tx_timeout;
3978 dev->watchdog_timeo = TX_WATCHDOG;
3979 #ifdef CONFIG_NET_POLL_CONTROLLER
3980 dev->poll_controller = sky2_netpoll;
3981 #endif
3982
3983 sky2 = netdev_priv(dev);
3984 sky2->netdev = dev;
3985 sky2->hw = hw;
3986 sky2->msg_enable = netif_msg_init(debug, default_msg);
3987
3988 /* Auto speed and flow control */
3989 sky2->autoneg = AUTONEG_ENABLE;
3990 sky2->flow_mode = FC_BOTH;
3991
3992 sky2->duplex = -1;
3993 sky2->speed = -1;
3994 sky2->advertising = sky2_supported_modes(hw);
3995 sky2->rx_csum = 1;
3996 sky2->wol = wol;
3997
3998 spin_lock_init(&sky2->phy_lock);
3999 sky2->tx_pending = TX_DEF_PENDING;
4000 sky2->rx_pending = RX_DEF_PENDING;
4001
4002 hw->dev[port] = dev;
4003
4004 sky2->port = port;
4005
4006 dev->features |= NETIF_F_TSO | NETIF_F_IP_CSUM | NETIF_F_SG;
4007 if (highmem)
4008 dev->features |= NETIF_F_HIGHDMA;
4009
4010 #ifdef SKY2_VLAN_TAG_USED
4011 /* The workaround for FE+ status conflicts with VLAN tag detection. */
4012 if (!(sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
4013 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0)) {
4014 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
4015 dev->vlan_rx_register = sky2_vlan_rx_register;
4016 }
4017 #endif
4018
4019 /* read the mac address */
4020 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
4021 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
4022
4023 return dev;
4024 }
4025
4026 static void __devinit sky2_show_addr(struct net_device *dev)
4027 {
4028 const struct sky2_port *sky2 = netdev_priv(dev);
4029 DECLARE_MAC_BUF(mac);
4030
4031 if (netif_msg_probe(sky2))
4032 printk(KERN_INFO PFX "%s: addr %s\n",
4033 dev->name, print_mac(mac, dev->dev_addr));
4034 }
4035
4036 /* Handle software interrupt used during MSI test */
4037 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
4038 {
4039 struct sky2_hw *hw = dev_id;
4040 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4041
4042 if (status == 0)
4043 return IRQ_NONE;
4044
4045 if (status & Y2_IS_IRQ_SW) {
4046 hw->flags |= SKY2_HW_USE_MSI;
4047 wake_up(&hw->msi_wait);
4048 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4049 }
4050 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4051
4052 return IRQ_HANDLED;
4053 }
4054
4055 /* Test interrupt path by forcing a a software IRQ */
4056 static int __devinit sky2_test_msi(struct sky2_hw *hw)
4057 {
4058 struct pci_dev *pdev = hw->pdev;
4059 int err;
4060
4061 init_waitqueue_head (&hw->msi_wait);
4062
4063 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4064
4065 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4066 if (err) {
4067 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4068 return err;
4069 }
4070
4071 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4072 sky2_read8(hw, B0_CTST);
4073
4074 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4075
4076 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4077 /* MSI test failed, go back to INTx mode */
4078 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4079 "switching to INTx mode.\n");
4080
4081 err = -EOPNOTSUPP;
4082 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4083 }
4084
4085 sky2_write32(hw, B0_IMSK, 0);
4086 sky2_read32(hw, B0_IMSK);
4087
4088 free_irq(pdev->irq, hw);
4089
4090 return err;
4091 }
4092
4093 static int __devinit pci_wake_enabled(struct pci_dev *dev)
4094 {
4095 int pm = pci_find_capability(dev, PCI_CAP_ID_PM);
4096 u16 value;
4097
4098 if (!pm)
4099 return 0;
4100 if (pci_read_config_word(dev, pm + PCI_PM_CTRL, &value))
4101 return 0;
4102 return value & PCI_PM_CTRL_PME_ENABLE;
4103 }
4104
4105 static int __devinit sky2_probe(struct pci_dev *pdev,
4106 const struct pci_device_id *ent)
4107 {
4108 struct net_device *dev;
4109 struct sky2_hw *hw;
4110 int err, using_dac = 0, wol_default;
4111
4112 err = pci_enable_device(pdev);
4113 if (err) {
4114 dev_err(&pdev->dev, "cannot enable PCI device\n");
4115 goto err_out;
4116 }
4117
4118 err = pci_request_regions(pdev, DRV_NAME);
4119 if (err) {
4120 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4121 goto err_out_disable;
4122 }
4123
4124 pci_set_master(pdev);
4125
4126 if (sizeof(dma_addr_t) > sizeof(u32) &&
4127 !(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
4128 using_dac = 1;
4129 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4130 if (err < 0) {
4131 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4132 "for consistent allocations\n");
4133 goto err_out_free_regions;
4134 }
4135 } else {
4136 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4137 if (err) {
4138 dev_err(&pdev->dev, "no usable DMA configuration\n");
4139 goto err_out_free_regions;
4140 }
4141 }
4142
4143 wol_default = pci_wake_enabled(pdev) ? WAKE_MAGIC : 0;
4144
4145 err = -ENOMEM;
4146 hw = kzalloc(sizeof(*hw), GFP_KERNEL);
4147 if (!hw) {
4148 dev_err(&pdev->dev, "cannot allocate hardware struct\n");
4149 goto err_out_free_regions;
4150 }
4151
4152 hw->pdev = pdev;
4153
4154 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
4155 if (!hw->regs) {
4156 dev_err(&pdev->dev, "cannot map device registers\n");
4157 goto err_out_free_hw;
4158 }
4159
4160 #ifdef __BIG_ENDIAN
4161 /* The sk98lin vendor driver uses hardware byte swapping but
4162 * this driver uses software swapping.
4163 */
4164 {
4165 u32 reg;
4166 pci_read_config_dword(pdev,PCI_DEV_REG2, &reg);
4167 reg &= ~PCI_REV_DESC;
4168 pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
4169 }
4170 #endif
4171
4172 /* ring for status responses */
4173 hw->st_le = pci_alloc_consistent(pdev, STATUS_LE_BYTES, &hw->st_dma);
4174 if (!hw->st_le)
4175 goto err_out_iounmap;
4176
4177 err = sky2_init(hw);
4178 if (err)
4179 goto err_out_iounmap;
4180
4181 dev_info(&pdev->dev, "v%s addr 0x%llx irq %d Yukon-%s (0x%x) rev %d\n",
4182 DRV_VERSION, (unsigned long long)pci_resource_start(pdev, 0),
4183 pdev->irq, yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
4184 hw->chip_id, hw->chip_rev);
4185
4186 sky2_reset(hw);
4187
4188 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
4189 if (!dev) {
4190 err = -ENOMEM;
4191 goto err_out_free_pci;
4192 }
4193
4194 if (!disable_msi && pci_enable_msi(pdev) == 0) {
4195 err = sky2_test_msi(hw);
4196 if (err == -EOPNOTSUPP)
4197 pci_disable_msi(pdev);
4198 else if (err)
4199 goto err_out_free_netdev;
4200 }
4201
4202 err = register_netdev(dev);
4203 if (err) {
4204 dev_err(&pdev->dev, "cannot register net device\n");
4205 goto err_out_free_netdev;
4206 }
4207
4208 netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
4209
4210 err = request_irq(pdev->irq, sky2_intr,
4211 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
4212 dev->name, hw);
4213 if (err) {
4214 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4215 goto err_out_unregister;
4216 }
4217 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4218 napi_enable(&hw->napi);
4219
4220 sky2_show_addr(dev);
4221
4222 if (hw->ports > 1) {
4223 struct net_device *dev1;
4224
4225 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
4226 if (!dev1)
4227 dev_warn(&pdev->dev, "allocation for second device failed\n");
4228 else if ((err = register_netdev(dev1))) {
4229 dev_warn(&pdev->dev,
4230 "register of second port failed (%d)\n", err);
4231 hw->dev[1] = NULL;
4232 free_netdev(dev1);
4233 } else
4234 sky2_show_addr(dev1);
4235 }
4236
4237 setup_timer(&hw->watchdog_timer, sky2_watchdog, (unsigned long) hw);
4238 INIT_WORK(&hw->restart_work, sky2_restart);
4239
4240 pci_set_drvdata(pdev, hw);
4241
4242 return 0;
4243
4244 err_out_unregister:
4245 if (hw->flags & SKY2_HW_USE_MSI)
4246 pci_disable_msi(pdev);
4247 unregister_netdev(dev);
4248 err_out_free_netdev:
4249 free_netdev(dev);
4250 err_out_free_pci:
4251 sky2_write8(hw, B0_CTST, CS_RST_SET);
4252 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4253 err_out_iounmap:
4254 iounmap(hw->regs);
4255 err_out_free_hw:
4256 kfree(hw);
4257 err_out_free_regions:
4258 pci_release_regions(pdev);
4259 err_out_disable:
4260 pci_disable_device(pdev);
4261 err_out:
4262 pci_set_drvdata(pdev, NULL);
4263 return err;
4264 }
4265
4266 static void __devexit sky2_remove(struct pci_dev *pdev)
4267 {
4268 struct sky2_hw *hw = pci_get_drvdata(pdev);
4269 int i;
4270
4271 if (!hw)
4272 return;
4273
4274 del_timer_sync(&hw->watchdog_timer);
4275 cancel_work_sync(&hw->restart_work);
4276
4277 for (i = hw->ports-1; i >= 0; --i)
4278 unregister_netdev(hw->dev[i]);
4279
4280 sky2_write32(hw, B0_IMSK, 0);
4281
4282 sky2_power_aux(hw);
4283
4284 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
4285 sky2_write8(hw, B0_CTST, CS_RST_SET);
4286 sky2_read8(hw, B0_CTST);
4287
4288 free_irq(pdev->irq, hw);
4289 if (hw->flags & SKY2_HW_USE_MSI)
4290 pci_disable_msi(pdev);
4291 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4292 pci_release_regions(pdev);
4293 pci_disable_device(pdev);
4294
4295 for (i = hw->ports-1; i >= 0; --i)
4296 free_netdev(hw->dev[i]);
4297
4298 iounmap(hw->regs);
4299 kfree(hw);
4300
4301 pci_set_drvdata(pdev, NULL);
4302 }
4303
4304 #ifdef CONFIG_PM
4305 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
4306 {
4307 struct sky2_hw *hw = pci_get_drvdata(pdev);
4308 int i, wol = 0;
4309
4310 if (!hw)
4311 return 0;
4312
4313 for (i = 0; i < hw->ports; i++) {
4314 struct net_device *dev = hw->dev[i];
4315 struct sky2_port *sky2 = netdev_priv(dev);
4316
4317 if (netif_running(dev))
4318 sky2_down(dev);
4319
4320 if (sky2->wol)
4321 sky2_wol_init(sky2);
4322
4323 wol |= sky2->wol;
4324 }
4325
4326 sky2_write32(hw, B0_IMSK, 0);
4327 napi_disable(&hw->napi);
4328 sky2_power_aux(hw);
4329
4330 pci_save_state(pdev);
4331 pci_enable_wake(pdev, pci_choose_state(pdev, state), wol);
4332 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4333
4334 return 0;
4335 }
4336
4337 static int sky2_resume(struct pci_dev *pdev)
4338 {
4339 struct sky2_hw *hw = pci_get_drvdata(pdev);
4340 int i, err;
4341
4342 if (!hw)
4343 return 0;
4344
4345 err = pci_set_power_state(pdev, PCI_D0);
4346 if (err)
4347 goto out;
4348
4349 err = pci_restore_state(pdev);
4350 if (err)
4351 goto out;
4352
4353 pci_enable_wake(pdev, PCI_D0, 0);
4354
4355 /* Re-enable all clocks */
4356 if (hw->chip_id == CHIP_ID_YUKON_EX ||
4357 hw->chip_id == CHIP_ID_YUKON_EC_U ||
4358 hw->chip_id == CHIP_ID_YUKON_FE_P)
4359 pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
4360
4361 sky2_reset(hw);
4362 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4363 napi_enable(&hw->napi);
4364
4365 for (i = 0; i < hw->ports; i++) {
4366 struct net_device *dev = hw->dev[i];
4367 if (netif_running(dev)) {
4368 err = sky2_up(dev);
4369 if (err) {
4370 printk(KERN_ERR PFX "%s: could not up: %d\n",
4371 dev->name, err);
4372 dev_close(dev);
4373 goto out;
4374 }
4375
4376 sky2_set_multicast(dev);
4377 }
4378 }
4379
4380 return 0;
4381 out:
4382 dev_err(&pdev->dev, "resume failed (%d)\n", err);
4383 pci_disable_device(pdev);
4384 return err;
4385 }
4386 #endif
4387
4388 static void sky2_shutdown(struct pci_dev *pdev)
4389 {
4390 struct sky2_hw *hw = pci_get_drvdata(pdev);
4391 int i, wol = 0;
4392
4393 if (!hw)
4394 return;
4395
4396 del_timer_sync(&hw->watchdog_timer);
4397
4398 for (i = 0; i < hw->ports; i++) {
4399 struct net_device *dev = hw->dev[i];
4400 struct sky2_port *sky2 = netdev_priv(dev);
4401
4402 if (sky2->wol) {
4403 wol = 1;
4404 sky2_wol_init(sky2);
4405 }
4406 }
4407
4408 if (wol)
4409 sky2_power_aux(hw);
4410
4411 pci_enable_wake(pdev, PCI_D3hot, wol);
4412 pci_enable_wake(pdev, PCI_D3cold, wol);
4413
4414 pci_disable_device(pdev);
4415 pci_set_power_state(pdev, PCI_D3hot);
4416
4417 }
4418
4419 static struct pci_driver sky2_driver = {
4420 .name = DRV_NAME,
4421 .id_table = sky2_id_table,
4422 .probe = sky2_probe,
4423 .remove = __devexit_p(sky2_remove),
4424 #ifdef CONFIG_PM
4425 .suspend = sky2_suspend,
4426 .resume = sky2_resume,
4427 #endif
4428 .shutdown = sky2_shutdown,
4429 };
4430
4431 static int __init sky2_init_module(void)
4432 {
4433 sky2_debug_init();
4434 return pci_register_driver(&sky2_driver);
4435 }
4436
4437 static void __exit sky2_cleanup_module(void)
4438 {
4439 pci_unregister_driver(&sky2_driver);
4440 sky2_debug_cleanup();
4441 }
4442
4443 module_init(sky2_init_module);
4444 module_exit(sky2_cleanup_module);
4445
4446 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
4447 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
4448 MODULE_LICENSE("GPL");
4449 MODULE_VERSION(DRV_VERSION);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree