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cpusets: new round-robin rotor for SLAB allocations
[linux-2.6/kvm.git] / drivers / net / sky2.c
blob2111c7bbf57831209b689871ceea4cb48a82de87
1 /*
2 * New driver for Marvell Yukon 2 chipset.
3 * Based on earlier sk98lin, and skge driver.
4 *
5 * This driver intentionally does not support all the features
6 * of the original driver such as link fail-over and link management because
7 * those should be done at higher levels.
8 *
9 * Copyright (C) 2005 Stephen Hemminger <shemminger@osdl.org>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
26
27 #include <linux/crc32.h>
28 #include <linux/kernel.h>
29 #include <linux/module.h>
30 #include <linux/netdevice.h>
31 #include <linux/dma-mapping.h>
32 #include <linux/etherdevice.h>
33 #include <linux/ethtool.h>
34 #include <linux/pci.h>
35 #include <linux/ip.h>
36 #include <linux/slab.h>
37 #include <net/ip.h>
38 #include <linux/tcp.h>
39 #include <linux/in.h>
40 #include <linux/delay.h>
41 #include <linux/workqueue.h>
42 #include <linux/if_vlan.h>
43 #include <linux/prefetch.h>
44 #include <linux/debugfs.h>
45 #include <linux/mii.h>
46
47 #include <asm/irq.h>
48
49 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
50 #define SKY2_VLAN_TAG_USED 1
51 #endif
52
53 #include "sky2.h"
54
55 #define DRV_NAME "sky2"
56 #define DRV_VERSION "1.28"
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
69 /* This is the worst case number of transmit list elements for a single skb:
70 VLAN:GSO + CKSUM + Data + skb_frags * DMA */
71 #define MAX_SKB_TX_LE (2 + (sizeof(dma_addr_t)/sizeof(u32))*(MAX_SKB_FRAGS+1))
72 #define TX_MIN_PENDING (MAX_SKB_TX_LE+1)
73 #define TX_MAX_PENDING 1024
74 #define TX_DEF_PENDING 127
75
76 #define TX_WATCHDOG (5 * HZ)
77 #define NAPI_WEIGHT 64
78 #define PHY_RETRIES 1000
79
80 #define SKY2_EEPROM_MAGIC 0x9955aabb
81
82 #define RING_NEXT(x,s) (((x)+1) & ((s)-1))
83
84 static const u32 default_msg =
85 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
86 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
87 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
88
89 static int debug = -1; /* defaults above */
90 module_param(debug, int, 0);
91 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
92
93 static int copybreak __read_mostly = 128;
94 module_param(copybreak, int, 0);
95 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
96
97 static int disable_msi = 0;
98 module_param(disable_msi, int, 0);
99 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
100
101 static DEFINE_PCI_DEVICE_TABLE(sky2_id_table) = {
102 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
103 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
104 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E01) }, /* SK-9E21M */
105 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
106 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
107 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
108 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B03) }, /* DGE-550T */
109 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4354) }, /* 88E8040 */
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4355) }, /* 88E8040T */
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4356) }, /* 88EC033 */
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4357) }, /* 88E8042 */
125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x435A) }, /* 88E8048 */
126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) }, /* 88E8052 */
127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) }, /* 88E8050 */
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) }, /* 88E8053 */
129 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) }, /* 88E8055 */
130 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) }, /* 88E8056 */
131 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4365) }, /* 88E8070 */
132 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) }, /* 88EC036 */
133 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) }, /* 88EC032 */
134 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) }, /* 88EC034 */
135 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4369) }, /* 88EC042 */
136 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436A) }, /* 88E8058 */
137 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436B) }, /* 88E8071 */
138 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436C) }, /* 88E8072 */
139 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436D) }, /* 88E8055 */
140 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4370) }, /* 88E8075 */
141 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4380) }, /* 88E8057 */
142 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4381) }, /* 88E8059 */
143 { 0 }
144 };
145
146 MODULE_DEVICE_TABLE(pci, sky2_id_table);
147
148 /* Avoid conditionals by using array */
149 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
150 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
151 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
152
153 static void sky2_set_multicast(struct net_device *dev);
154
155 /* Access to PHY via serial interconnect */
156 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
157 {
158 int i;
159
160 gma_write16(hw, port, GM_SMI_DATA, val);
161 gma_write16(hw, port, GM_SMI_CTRL,
162 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
163
164 for (i = 0; i < PHY_RETRIES; i++) {
165 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
166 if (ctrl == 0xffff)
167 goto io_error;
168
169 if (!(ctrl & GM_SMI_CT_BUSY))
170 return 0;
171
172 udelay(10);
173 }
174
175 dev_warn(&hw->pdev->dev,"%s: phy write timeout\n", hw->dev[port]->name);
176 return -ETIMEDOUT;
177
178 io_error:
179 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
180 return -EIO;
181 }
182
183 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
184 {
185 int i;
186
187 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
188 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
189
190 for (i = 0; i < PHY_RETRIES; i++) {
191 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
192 if (ctrl == 0xffff)
193 goto io_error;
194
195 if (ctrl & GM_SMI_CT_RD_VAL) {
196 *val = gma_read16(hw, port, GM_SMI_DATA);
197 return 0;
198 }
199
200 udelay(10);
201 }
202
203 dev_warn(&hw->pdev->dev, "%s: phy read timeout\n", hw->dev[port]->name);
204 return -ETIMEDOUT;
205 io_error:
206 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
207 return -EIO;
208 }
209
210 static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
211 {
212 u16 v;
213 __gm_phy_read(hw, port, reg, &v);
214 return v;
215 }
216
217
218 static void sky2_power_on(struct sky2_hw *hw)
219 {
220 /* switch power to VCC (WA for VAUX problem) */
221 sky2_write8(hw, B0_POWER_CTRL,
222 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
223
224 /* disable Core Clock Division, */
225 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
226
227 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
228 /* enable bits are inverted */
229 sky2_write8(hw, B2_Y2_CLK_GATE,
230 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
231 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
232 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
233 else
234 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
235
236 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
237 u32 reg;
238
239 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
240
241 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
242 /* set all bits to 0 except bits 15..12 and 8 */
243 reg &= P_ASPM_CONTROL_MSK;
244 sky2_pci_write32(hw, PCI_DEV_REG4, reg);
245
246 reg = sky2_pci_read32(hw, PCI_DEV_REG5);
247 /* set all bits to 0 except bits 28 & 27 */
248 reg &= P_CTL_TIM_VMAIN_AV_MSK;
249 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
250
251 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
252
253 sky2_write16(hw, B0_CTST, Y2_HW_WOL_ON);
254
255 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
256 reg = sky2_read32(hw, B2_GP_IO);
257 reg |= GLB_GPIO_STAT_RACE_DIS;
258 sky2_write32(hw, B2_GP_IO, reg);
259
260 sky2_read32(hw, B2_GP_IO);
261 }
262
263 /* Turn on "driver loaded" LED */
264 sky2_write16(hw, B0_CTST, Y2_LED_STAT_ON);
265 }
266
267 static void sky2_power_aux(struct sky2_hw *hw)
268 {
269 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
270 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
271 else
272 /* enable bits are inverted */
273 sky2_write8(hw, B2_Y2_CLK_GATE,
274 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
275 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
276 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
277
278 /* switch power to VAUX if supported and PME from D3cold */
279 if ( (sky2_read32(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
280 pci_pme_capable(hw->pdev, PCI_D3cold))
281 sky2_write8(hw, B0_POWER_CTRL,
282 (PC_VAUX_ENA | PC_VCC_ENA |
283 PC_VAUX_ON | PC_VCC_OFF));
284
285 /* turn off "driver loaded LED" */
286 sky2_write16(hw, B0_CTST, Y2_LED_STAT_OFF);
287 }
288
289 static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
290 {
291 u16 reg;
292
293 /* disable all GMAC IRQ's */
294 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
295
296 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
297 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
298 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
299 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
300
301 reg = gma_read16(hw, port, GM_RX_CTRL);
302 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
303 gma_write16(hw, port, GM_RX_CTRL, reg);
304 }
305
306 /* flow control to advertise bits */
307 static const u16 copper_fc_adv[] = {
308 [FC_NONE] = 0,
309 [FC_TX] = PHY_M_AN_ASP,
310 [FC_RX] = PHY_M_AN_PC,
311 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
312 };
313
314 /* flow control to advertise bits when using 1000BaseX */
315 static const u16 fiber_fc_adv[] = {
316 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
317 [FC_TX] = PHY_M_P_ASYM_MD_X,
318 [FC_RX] = PHY_M_P_SYM_MD_X,
319 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
320 };
321
322 /* flow control to GMA disable bits */
323 static const u16 gm_fc_disable[] = {
324 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
325 [FC_TX] = GM_GPCR_FC_RX_DIS,
326 [FC_RX] = GM_GPCR_FC_TX_DIS,
327 [FC_BOTH] = 0,
328 };
329
330
331 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
332 {
333 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
334 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
335
336 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
337 !(hw->flags & SKY2_HW_NEWER_PHY)) {
338 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
339
340 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
341 PHY_M_EC_MAC_S_MSK);
342 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
343
344 /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
345 if (hw->chip_id == CHIP_ID_YUKON_EC)
346 /* set downshift counter to 3x and enable downshift */
347 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
348 else
349 /* set master & slave downshift counter to 1x */
350 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
351
352 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
353 }
354
355 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
356 if (sky2_is_copper(hw)) {
357 if (!(hw->flags & SKY2_HW_GIGABIT)) {
358 /* enable automatic crossover */
359 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
360
361 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
362 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
363 u16 spec;
364
365 /* Enable Class A driver for FE+ A0 */
366 spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2);
367 spec |= PHY_M_FESC_SEL_CL_A;
368 gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec);
369 }
370 } else {
371 /* disable energy detect */
372 ctrl &= ~PHY_M_PC_EN_DET_MSK;
373
374 /* enable automatic crossover */
375 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
376
377 /* downshift on PHY 88E1112 and 88E1149 is changed */
378 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
379 (hw->flags & SKY2_HW_NEWER_PHY)) {
380 /* set downshift counter to 3x and enable downshift */
381 ctrl &= ~PHY_M_PC_DSC_MSK;
382 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
383 }
384 }
385 } else {
386 /* workaround for deviation #4.88 (CRC errors) */
387 /* disable Automatic Crossover */
388
389 ctrl &= ~PHY_M_PC_MDIX_MSK;
390 }
391
392 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
393
394 /* special setup for PHY 88E1112 Fiber */
395 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
396 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
397
398 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
399 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
400 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
401 ctrl &= ~PHY_M_MAC_MD_MSK;
402 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
403 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
404
405 if (hw->pmd_type == 'P') {
406 /* select page 1 to access Fiber registers */
407 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
408
409 /* for SFP-module set SIGDET polarity to low */
410 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
411 ctrl |= PHY_M_FIB_SIGD_POL;
412 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
413 }
414
415 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
416 }
417
418 ctrl = PHY_CT_RESET;
419 ct1000 = 0;
420 adv = PHY_AN_CSMA;
421 reg = 0;
422
423 if (sky2->flags & SKY2_FLAG_AUTO_SPEED) {
424 if (sky2_is_copper(hw)) {
425 if (sky2->advertising & ADVERTISED_1000baseT_Full)
426 ct1000 |= PHY_M_1000C_AFD;
427 if (sky2->advertising & ADVERTISED_1000baseT_Half)
428 ct1000 |= PHY_M_1000C_AHD;
429 if (sky2->advertising & ADVERTISED_100baseT_Full)
430 adv |= PHY_M_AN_100_FD;
431 if (sky2->advertising & ADVERTISED_100baseT_Half)
432 adv |= PHY_M_AN_100_HD;
433 if (sky2->advertising & ADVERTISED_10baseT_Full)
434 adv |= PHY_M_AN_10_FD;
435 if (sky2->advertising & ADVERTISED_10baseT_Half)
436 adv |= PHY_M_AN_10_HD;
437
438 } else { /* special defines for FIBER (88E1040S only) */
439 if (sky2->advertising & ADVERTISED_1000baseT_Full)
440 adv |= PHY_M_AN_1000X_AFD;
441 if (sky2->advertising & ADVERTISED_1000baseT_Half)
442 adv |= PHY_M_AN_1000X_AHD;
443 }
444
445 /* Restart Auto-negotiation */
446 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
447 } else {
448 /* forced speed/duplex settings */
449 ct1000 = PHY_M_1000C_MSE;
450
451 /* Disable auto update for duplex flow control and duplex */
452 reg |= GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_SPD_DIS;
453
454 switch (sky2->speed) {
455 case SPEED_1000:
456 ctrl |= PHY_CT_SP1000;
457 reg |= GM_GPCR_SPEED_1000;
458 break;
459 case SPEED_100:
460 ctrl |= PHY_CT_SP100;
461 reg |= GM_GPCR_SPEED_100;
462 break;
463 }
464
465 if (sky2->duplex == DUPLEX_FULL) {
466 reg |= GM_GPCR_DUP_FULL;
467 ctrl |= PHY_CT_DUP_MD;
468 } else if (sky2->speed < SPEED_1000)
469 sky2->flow_mode = FC_NONE;
470 }
471
472 if (sky2->flags & SKY2_FLAG_AUTO_PAUSE) {
473 if (sky2_is_copper(hw))
474 adv |= copper_fc_adv[sky2->flow_mode];
475 else
476 adv |= fiber_fc_adv[sky2->flow_mode];
477 } else {
478 reg |= GM_GPCR_AU_FCT_DIS;
479 reg |= gm_fc_disable[sky2->flow_mode];
480
481 /* Forward pause packets to GMAC? */
482 if (sky2->flow_mode & FC_RX)
483 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
484 else
485 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
486 }
487
488 gma_write16(hw, port, GM_GP_CTRL, reg);
489
490 if (hw->flags & SKY2_HW_GIGABIT)
491 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
492
493 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
494 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
495
496 /* Setup Phy LED's */
497 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
498 ledover = 0;
499
500 switch (hw->chip_id) {
501 case CHIP_ID_YUKON_FE:
502 /* on 88E3082 these bits are at 11..9 (shifted left) */
503 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
504
505 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
506
507 /* delete ACT LED control bits */
508 ctrl &= ~PHY_M_FELP_LED1_MSK;
509 /* change ACT LED control to blink mode */
510 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
511 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
512 break;
513
514 case CHIP_ID_YUKON_FE_P:
515 /* Enable Link Partner Next Page */
516 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
517 ctrl |= PHY_M_PC_ENA_LIP_NP;
518
519 /* disable Energy Detect and enable scrambler */
520 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
521 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
522
523 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
524 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
525 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
526 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
527
528 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
529 break;
530
531 case CHIP_ID_YUKON_XL:
532 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
533
534 /* select page 3 to access LED control register */
535 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
536
537 /* set LED Function Control register */
538 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
539 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
540 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
541 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
542 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
543
544 /* set Polarity Control register */
545 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
546 (PHY_M_POLC_LS1_P_MIX(4) |
547 PHY_M_POLC_IS0_P_MIX(4) |
548 PHY_M_POLC_LOS_CTRL(2) |
549 PHY_M_POLC_INIT_CTRL(2) |
550 PHY_M_POLC_STA1_CTRL(2) |
551 PHY_M_POLC_STA0_CTRL(2)));
552
553 /* restore page register */
554 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
555 break;
556
557 case CHIP_ID_YUKON_EC_U:
558 case CHIP_ID_YUKON_EX:
559 case CHIP_ID_YUKON_SUPR:
560 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
561
562 /* select page 3 to access LED control register */
563 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
564
565 /* set LED Function Control register */
566 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
567 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
568 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
569 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
570 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
571
572 /* set Blink Rate in LED Timer Control Register */
573 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
574 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
575 /* restore page register */
576 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
577 break;
578
579 default:
580 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
581 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
582
583 /* turn off the Rx LED (LED_RX) */
584 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
585 }
586
587 if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_UL_2) {
588 /* apply fixes in PHY AFE */
589 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
590
591 /* increase differential signal amplitude in 10BASE-T */
592 gm_phy_write(hw, port, 0x18, 0xaa99);
593 gm_phy_write(hw, port, 0x17, 0x2011);
594
595 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
596 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
597 gm_phy_write(hw, port, 0x18, 0xa204);
598 gm_phy_write(hw, port, 0x17, 0x2002);
599 }
600
601 /* set page register to 0 */
602 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
603 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
604 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
605 /* apply workaround for integrated resistors calibration */
606 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
607 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
608 } else if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
609 /* apply fixes in PHY AFE */
610 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00ff);
611
612 /* apply RDAC termination workaround */
613 gm_phy_write(hw, port, 24, 0x2800);
614 gm_phy_write(hw, port, 23, 0x2001);
615
616 /* set page register back to 0 */
617 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
618 } else if (hw->chip_id != CHIP_ID_YUKON_EX &&
619 hw->chip_id < CHIP_ID_YUKON_SUPR) {
620 /* no effect on Yukon-XL */
621 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
622
623 if (!(sky2->flags & SKY2_FLAG_AUTO_SPEED) ||
624 sky2->speed == SPEED_100) {
625 /* turn on 100 Mbps LED (LED_LINK100) */
626 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
627 }
628
629 if (ledover)
630 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
631
632 }
633
634 /* Enable phy interrupt on auto-negotiation complete (or link up) */
635 if (sky2->flags & SKY2_FLAG_AUTO_SPEED)
636 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
637 else
638 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
639 }
640
641 static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
642 static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
643
644 static void sky2_phy_power_up(struct sky2_hw *hw, unsigned port)
645 {
646 u32 reg1;
647
648 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
649 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
650 reg1 &= ~phy_power[port];
651
652 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
653 reg1 |= coma_mode[port];
654
655 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
656 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
657 sky2_pci_read32(hw, PCI_DEV_REG1);
658
659 if (hw->chip_id == CHIP_ID_YUKON_FE)
660 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_ANE);
661 else if (hw->flags & SKY2_HW_ADV_POWER_CTL)
662 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
663 }
664
665 static void sky2_phy_power_down(struct sky2_hw *hw, unsigned port)
666 {
667 u32 reg1;
668 u16 ctrl;
669
670 /* release GPHY Control reset */
671 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
672
673 /* release GMAC reset */
674 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
675
676 if (hw->flags & SKY2_HW_NEWER_PHY) {
677 /* select page 2 to access MAC control register */
678 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
679
680 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
681 /* allow GMII Power Down */
682 ctrl &= ~PHY_M_MAC_GMIF_PUP;
683 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
684
685 /* set page register back to 0 */
686 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
687 }
688
689 /* setup General Purpose Control Register */
690 gma_write16(hw, port, GM_GP_CTRL,
691 GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 |
692 GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_FCT_DIS |
693 GM_GPCR_AU_SPD_DIS);
694
695 if (hw->chip_id != CHIP_ID_YUKON_EC) {
696 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
697 /* select page 2 to access MAC control register */
698 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
699
700 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
701 /* enable Power Down */
702 ctrl |= PHY_M_PC_POW_D_ENA;
703 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
704
705 /* set page register back to 0 */
706 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
707 }
708
709 /* set IEEE compatible Power Down Mode (dev. #4.99) */
710 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_PDOWN);
711 }
712
713 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
714 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
715 reg1 |= phy_power[port]; /* set PHY to PowerDown/COMA Mode */
716 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
717 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
718 }
719
720 /* Force a renegotiation */
721 static void sky2_phy_reinit(struct sky2_port *sky2)
722 {
723 spin_lock_bh(&sky2->phy_lock);
724 sky2_phy_init(sky2->hw, sky2->port);
725 spin_unlock_bh(&sky2->phy_lock);
726 }
727
728 /* Put device in state to listen for Wake On Lan */
729 static void sky2_wol_init(struct sky2_port *sky2)
730 {
731 struct sky2_hw *hw = sky2->hw;
732 unsigned port = sky2->port;
733 enum flow_control save_mode;
734 u16 ctrl;
735
736 /* Bring hardware out of reset */
737 sky2_write16(hw, B0_CTST, CS_RST_CLR);
738 sky2_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
739
740 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
741 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
742
743 /* Force to 10/100
744 * sky2_reset will re-enable on resume
745 */
746 save_mode = sky2->flow_mode;
747 ctrl = sky2->advertising;
748
749 sky2->advertising &= ~(ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full);
750 sky2->flow_mode = FC_NONE;
751
752 spin_lock_bh(&sky2->phy_lock);
753 sky2_phy_power_up(hw, port);
754 sky2_phy_init(hw, port);
755 spin_unlock_bh(&sky2->phy_lock);
756
757 sky2->flow_mode = save_mode;
758 sky2->advertising = ctrl;
759
760 /* Set GMAC to no flow control and auto update for speed/duplex */
761 gma_write16(hw, port, GM_GP_CTRL,
762 GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
763 GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
764
765 /* Set WOL address */
766 memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
767 sky2->netdev->dev_addr, ETH_ALEN);
768
769 /* Turn on appropriate WOL control bits */
770 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
771 ctrl = 0;
772 if (sky2->wol & WAKE_PHY)
773 ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
774 else
775 ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
776
777 if (sky2->wol & WAKE_MAGIC)
778 ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
779 else
780 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;
781
782 ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
783 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
784
785 /* Disable PiG firmware */
786 sky2_write16(hw, B0_CTST, Y2_HW_WOL_OFF);
787
788 /* block receiver */
789 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
790 }
791
792 static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
793 {
794 struct net_device *dev = hw->dev[port];
795
796 if ( (hw->chip_id == CHIP_ID_YUKON_EX &&
797 hw->chip_rev != CHIP_REV_YU_EX_A0) ||
798 hw->chip_id >= CHIP_ID_YUKON_FE_P) {
799 /* Yukon-Extreme B0 and further Extreme devices */
800 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
801 } else if (dev->mtu > ETH_DATA_LEN) {
802 /* set Tx GMAC FIFO Almost Empty Threshold */
803 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
804 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
805
806 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
807 } else
808 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
809 }
810
811 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
812 {
813 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
814 u16 reg;
815 u32 rx_reg;
816 int i;
817 const u8 *addr = hw->dev[port]->dev_addr;
818
819 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
820 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
821
822 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
823
824 if (hw->chip_id == CHIP_ID_YUKON_XL &&
825 hw->chip_rev == CHIP_REV_YU_XL_A0 &&
826 port == 1) {
827 /* WA DEV_472 -- looks like crossed wires on port 2 */
828 /* clear GMAC 1 Control reset */
829 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
830 do {
831 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
832 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
833 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
834 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
835 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
836 }
837
838 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
839
840 /* Enable Transmit FIFO Underrun */
841 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
842
843 spin_lock_bh(&sky2->phy_lock);
844 sky2_phy_power_up(hw, port);
845 sky2_phy_init(hw, port);
846 spin_unlock_bh(&sky2->phy_lock);
847
848 /* MIB clear */
849 reg = gma_read16(hw, port, GM_PHY_ADDR);
850 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
851
852 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
853 gma_read16(hw, port, i);
854 gma_write16(hw, port, GM_PHY_ADDR, reg);
855
856 /* transmit control */
857 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
858
859 /* receive control reg: unicast + multicast + no FCS */
860 gma_write16(hw, port, GM_RX_CTRL,
861 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
862
863 /* transmit flow control */
864 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
865
866 /* transmit parameter */
867 gma_write16(hw, port, GM_TX_PARAM,
868 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
869 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
870 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
871 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
872
873 /* serial mode register */
874 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
875 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
876
877 if (hw->dev[port]->mtu > ETH_DATA_LEN)
878 reg |= GM_SMOD_JUMBO_ENA;
879
880 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
881 hw->chip_rev == CHIP_REV_YU_EC_U_B1)
882 reg |= GM_NEW_FLOW_CTRL;
883
884 gma_write16(hw, port, GM_SERIAL_MODE, reg);
885
886 /* virtual address for data */
887 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
888
889 /* physical address: used for pause frames */
890 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
891
892 /* ignore counter overflows */
893 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
894 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
895 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
896
897 /* Configure Rx MAC FIFO */
898 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
899 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
900 if (hw->chip_id == CHIP_ID_YUKON_EX ||
901 hw->chip_id == CHIP_ID_YUKON_FE_P)
902 rx_reg |= GMF_RX_OVER_ON;
903
904 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
905
906 if (hw->chip_id == CHIP_ID_YUKON_XL) {
907 /* Hardware errata - clear flush mask */
908 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0);
909 } else {
910 /* Flush Rx MAC FIFO on any flow control or error */
911 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
912 }
913
914 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
915 reg = RX_GMF_FL_THR_DEF + 1;
916 /* Another magic mystery workaround from sk98lin */
917 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
918 hw->chip_rev == CHIP_REV_YU_FE2_A0)
919 reg = 0x178;
920 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
921
922 /* Configure Tx MAC FIFO */
923 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
924 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
925
926 /* On chips without ram buffer, pause is controled by MAC level */
927 if (!(hw->flags & SKY2_HW_RAM_BUFFER)) {
928 /* Pause threshold is scaled by 8 in bytes */
929 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
930 hw->chip_rev == CHIP_REV_YU_FE2_A0)
931 reg = 1568 / 8;
932 else
933 reg = 1024 / 8;
934 sky2_write16(hw, SK_REG(port, RX_GMF_UP_THR), reg);
935 sky2_write16(hw, SK_REG(port, RX_GMF_LP_THR), 768 / 8);
936
937 sky2_set_tx_stfwd(hw, port);
938 }
939
940 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
941 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
942 /* disable dynamic watermark */
943 reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA));
944 reg &= ~TX_DYN_WM_ENA;
945 sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg);
946 }
947 }
948
949 /* Assign Ram Buffer allocation to queue */
950 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
951 {
952 u32 end;
953
954 /* convert from K bytes to qwords used for hw register */
955 start *= 1024/8;
956 space *= 1024/8;
957 end = start + space - 1;
958
959 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
960 sky2_write32(hw, RB_ADDR(q, RB_START), start);
961 sky2_write32(hw, RB_ADDR(q, RB_END), end);
962 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
963 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
964
965 if (q == Q_R1 || q == Q_R2) {
966 u32 tp = space - space/4;
967
968 /* On receive queue's set the thresholds
969 * give receiver priority when > 3/4 full
970 * send pause when down to 2K
971 */
972 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
973 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
974
975 tp = space - 2048/8;
976 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
977 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
978 } else {
979 /* Enable store & forward on Tx queue's because
980 * Tx FIFO is only 1K on Yukon
981 */
982 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
983 }
984
985 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
986 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
987 }
988
989 /* Setup Bus Memory Interface */
990 static void sky2_qset(struct sky2_hw *hw, u16 q)
991 {
992 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
993 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
994 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
995 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
996 }
997
998 /* Setup prefetch unit registers. This is the interface between
999 * hardware and driver list elements
1000 */
1001 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
1002 dma_addr_t addr, u32 last)
1003 {
1004 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1005 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
1006 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), upper_32_bits(addr));
1007 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), lower_32_bits(addr));
1008 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
1009 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
1010
1011 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
1012 }
1013
1014 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2, u16 *slot)
1015 {
1016 struct sky2_tx_le *le = sky2->tx_le + *slot;
1017
1018 *slot = RING_NEXT(*slot, sky2->tx_ring_size);
1019 le->ctrl = 0;
1020 return le;
1021 }
1022
1023 static void tx_init(struct sky2_port *sky2)
1024 {
1025 struct sky2_tx_le *le;
1026
1027 sky2->tx_prod = sky2->tx_cons = 0;
1028 sky2->tx_tcpsum = 0;
1029 sky2->tx_last_mss = 0;
1030
1031 le = get_tx_le(sky2, &sky2->tx_prod);
1032 le->addr = 0;
1033 le->opcode = OP_ADDR64 | HW_OWNER;
1034 sky2->tx_last_upper = 0;
1035 }
1036
1037 /* Update chip's next pointer */
1038 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
1039 {
1040 /* Make sure write' to descriptors are complete before we tell hardware */
1041 wmb();
1042 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
1043
1044 /* Synchronize I/O on since next processor may write to tail */
1045 mmiowb();
1046 }
1047
1048
1049 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
1050 {
1051 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
1052 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
1053 le->ctrl = 0;
1054 return le;
1055 }
1056
1057 static unsigned sky2_get_rx_threshold(struct sky2_port* sky2)
1058 {
1059 unsigned size;
1060
1061 /* Space needed for frame data + headers rounded up */
1062 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1063
1064 /* Stopping point for hardware truncation */
1065 return (size - 8) / sizeof(u32);
1066 }
1067
1068 static unsigned sky2_get_rx_data_size(struct sky2_port* sky2)
1069 {
1070 struct rx_ring_info *re;
1071 unsigned size;
1072
1073 /* Space needed for frame data + headers rounded up */
1074 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1075
1076 sky2->rx_nfrags = size >> PAGE_SHIFT;
1077 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1078
1079 /* Compute residue after pages */
1080 size -= sky2->rx_nfrags << PAGE_SHIFT;
1081
1082 /* Optimize to handle small packets and headers */
1083 if (size < copybreak)
1084 size = copybreak;
1085 if (size < ETH_HLEN)
1086 size = ETH_HLEN;
1087
1088 return size;
1089 }
1090
1091 /* Build description to hardware for one receive segment */
1092 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
1093 dma_addr_t map, unsigned len)
1094 {
1095 struct sky2_rx_le *le;
1096
1097 if (sizeof(dma_addr_t) > sizeof(u32)) {
1098 le = sky2_next_rx(sky2);
1099 le->addr = cpu_to_le32(upper_32_bits(map));
1100 le->opcode = OP_ADDR64 | HW_OWNER;
1101 }
1102
1103 le = sky2_next_rx(sky2);
1104 le->addr = cpu_to_le32(lower_32_bits(map));
1105 le->length = cpu_to_le16(len);
1106 le->opcode = op | HW_OWNER;
1107 }
1108
1109 /* Build description to hardware for one possibly fragmented skb */
1110 static void sky2_rx_submit(struct sky2_port *sky2,
1111 const struct rx_ring_info *re)
1112 {
1113 int i;
1114
1115 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
1116
1117 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
1118 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
1119 }
1120
1121
1122 static int sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
1123 unsigned size)
1124 {
1125 struct sk_buff *skb = re->skb;
1126 int i;
1127
1128 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
1129 if (pci_dma_mapping_error(pdev, re->data_addr))
1130 goto mapping_error;
1131
1132 dma_unmap_len_set(re, data_size, size);
1133
1134 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1135 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1136
1137 re->frag_addr[i] = pci_map_page(pdev, frag->page,
1138 frag->page_offset,
1139 frag->size,
1140 PCI_DMA_FROMDEVICE);
1141
1142 if (pci_dma_mapping_error(pdev, re->frag_addr[i]))
1143 goto map_page_error;
1144 }
1145 return 0;
1146
1147 map_page_error:
1148 while (--i >= 0) {
1149 pci_unmap_page(pdev, re->frag_addr[i],
1150 skb_shinfo(skb)->frags[i].size,
1151 PCI_DMA_FROMDEVICE);
1152 }
1153
1154 pci_unmap_single(pdev, re->data_addr, dma_unmap_len(re, data_size),
1155 PCI_DMA_FROMDEVICE);
1156
1157 mapping_error:
1158 if (net_ratelimit())
1159 dev_warn(&pdev->dev, "%s: rx mapping error\n",
1160 skb->dev->name);
1161 return -EIO;
1162 }
1163
1164 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1165 {
1166 struct sk_buff *skb = re->skb;
1167 int i;
1168
1169 pci_unmap_single(pdev, re->data_addr, dma_unmap_len(re, data_size),
1170 PCI_DMA_FROMDEVICE);
1171
1172 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1173 pci_unmap_page(pdev, re->frag_addr[i],
1174 skb_shinfo(skb)->frags[i].size,
1175 PCI_DMA_FROMDEVICE);
1176 }
1177
1178 /* Tell chip where to start receive checksum.
1179 * Actually has two checksums, but set both same to avoid possible byte
1180 * order problems.
1181 */
1182 static void rx_set_checksum(struct sky2_port *sky2)
1183 {
1184 struct sky2_rx_le *le = sky2_next_rx(sky2);
1185
1186 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1187 le->ctrl = 0;
1188 le->opcode = OP_TCPSTART | HW_OWNER;
1189
1190 sky2_write32(sky2->hw,
1191 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1192 (sky2->flags & SKY2_FLAG_RX_CHECKSUM)
1193 ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
1194 }
1195
1196 /* Enable/disable receive hash calculation (RSS) */
1197 static void rx_set_rss(struct net_device *dev)
1198 {
1199 struct sky2_port *sky2 = netdev_priv(dev);
1200 struct sky2_hw *hw = sky2->hw;
1201 int i, nkeys = 4;
1202
1203 /* Supports IPv6 and other modes */
1204 if (hw->flags & SKY2_HW_NEW_LE) {
1205 nkeys = 10;
1206 sky2_write32(hw, SK_REG(sky2->port, RSS_CFG), HASH_ALL);
1207 }
1208
1209 /* Program RSS initial values */
1210 if (dev->features & NETIF_F_RXHASH) {
1211 u32 key[nkeys];
1212
1213 get_random_bytes(key, nkeys * sizeof(u32));
1214 for (i = 0; i < nkeys; i++)
1215 sky2_write32(hw, SK_REG(sky2->port, RSS_KEY + i * 4),
1216 key[i]);
1217
1218 /* Need to turn on (undocumented) flag to make hashing work */
1219 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T),
1220 RX_STFW_ENA);
1221
1222 sky2_write32(hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1223 BMU_ENA_RX_RSS_HASH);
1224 } else
1225 sky2_write32(hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1226 BMU_DIS_RX_RSS_HASH);
1227 }
1228
1229 /*
1230 * The RX Stop command will not work for Yukon-2 if the BMU does not
1231 * reach the end of packet and since we can't make sure that we have
1232 * incoming data, we must reset the BMU while it is not doing a DMA
1233 * transfer. Since it is possible that the RX path is still active,
1234 * the RX RAM buffer will be stopped first, so any possible incoming
1235 * data will not trigger a DMA. After the RAM buffer is stopped, the
1236 * BMU is polled until any DMA in progress is ended and only then it
1237 * will be reset.
1238 */
1239 static void sky2_rx_stop(struct sky2_port *sky2)
1240 {
1241 struct sky2_hw *hw = sky2->hw;
1242 unsigned rxq = rxqaddr[sky2->port];
1243 int i;
1244
1245 /* disable the RAM Buffer receive queue */
1246 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1247
1248 for (i = 0; i < 0xffff; i++)
1249 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1250 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1251 goto stopped;
1252
1253 netdev_warn(sky2->netdev, "receiver stop failed\n");
1254 stopped:
1255 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1256
1257 /* reset the Rx prefetch unit */
1258 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1259 mmiowb();
1260 }
1261
1262 /* Clean out receive buffer area, assumes receiver hardware stopped */
1263 static void sky2_rx_clean(struct sky2_port *sky2)
1264 {
1265 unsigned i;
1266
1267 memset(sky2->rx_le, 0, RX_LE_BYTES);
1268 for (i = 0; i < sky2->rx_pending; i++) {
1269 struct rx_ring_info *re = sky2->rx_ring + i;
1270
1271 if (re->skb) {
1272 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1273 kfree_skb(re->skb);
1274 re->skb = NULL;
1275 }
1276 }
1277 }
1278
1279 /* Basic MII support */
1280 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1281 {
1282 struct mii_ioctl_data *data = if_mii(ifr);
1283 struct sky2_port *sky2 = netdev_priv(dev);
1284 struct sky2_hw *hw = sky2->hw;
1285 int err = -EOPNOTSUPP;
1286
1287 if (!netif_running(dev))
1288 return -ENODEV; /* Phy still in reset */
1289
1290 switch (cmd) {
1291 case SIOCGMIIPHY:
1292 data->phy_id = PHY_ADDR_MARV;
1293
1294 /* fallthru */
1295 case SIOCGMIIREG: {
1296 u16 val = 0;
1297
1298 spin_lock_bh(&sky2->phy_lock);
1299 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1300 spin_unlock_bh(&sky2->phy_lock);
1301
1302 data->val_out = val;
1303 break;
1304 }
1305
1306 case SIOCSMIIREG:
1307 spin_lock_bh(&sky2->phy_lock);
1308 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1309 data->val_in);
1310 spin_unlock_bh(&sky2->phy_lock);
1311 break;
1312 }
1313 return err;
1314 }
1315
1316 #ifdef SKY2_VLAN_TAG_USED
1317 static void sky2_set_vlan_mode(struct sky2_hw *hw, u16 port, bool onoff)
1318 {
1319 if (onoff) {
1320 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1321 RX_VLAN_STRIP_ON);
1322 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1323 TX_VLAN_TAG_ON);
1324 } else {
1325 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1326 RX_VLAN_STRIP_OFF);
1327 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1328 TX_VLAN_TAG_OFF);
1329 }
1330 }
1331
1332 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
1333 {
1334 struct sky2_port *sky2 = netdev_priv(dev);
1335 struct sky2_hw *hw = sky2->hw;
1336 u16 port = sky2->port;
1337
1338 netif_tx_lock_bh(dev);
1339 napi_disable(&hw->napi);
1340
1341 sky2->vlgrp = grp;
1342 sky2_set_vlan_mode(hw, port, grp != NULL);
1343
1344 sky2_read32(hw, B0_Y2_SP_LISR);
1345 napi_enable(&hw->napi);
1346 netif_tx_unlock_bh(dev);
1347 }
1348 #endif
1349
1350 /* Amount of required worst case padding in rx buffer */
1351 static inline unsigned sky2_rx_pad(const struct sky2_hw *hw)
1352 {
1353 return (hw->flags & SKY2_HW_RAM_BUFFER) ? 8 : 2;
1354 }
1355
1356 /*
1357 * Allocate an skb for receiving. If the MTU is large enough
1358 * make the skb non-linear with a fragment list of pages.
1359 */
1360 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2)
1361 {
1362 struct sk_buff *skb;
1363 int i;
1364
1365 skb = netdev_alloc_skb(sky2->netdev,
1366 sky2->rx_data_size + sky2_rx_pad(sky2->hw));
1367 if (!skb)
1368 goto nomem;
1369
1370 if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) {
1371 unsigned char *start;
1372 /*
1373 * Workaround for a bug in FIFO that cause hang
1374 * if the FIFO if the receive buffer is not 64 byte aligned.
1375 * The buffer returned from netdev_alloc_skb is
1376 * aligned except if slab debugging is enabled.
1377 */
1378 start = PTR_ALIGN(skb->data, 8);
1379 skb_reserve(skb, start - skb->data);
1380 } else
1381 skb_reserve(skb, NET_IP_ALIGN);
1382
1383 for (i = 0; i < sky2->rx_nfrags; i++) {
1384 struct page *page = alloc_page(GFP_ATOMIC);
1385
1386 if (!page)
1387 goto free_partial;
1388 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1389 }
1390
1391 return skb;
1392 free_partial:
1393 kfree_skb(skb);
1394 nomem:
1395 return NULL;
1396 }
1397
1398 static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1399 {
1400 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1401 }
1402
1403 static int sky2_alloc_rx_skbs(struct sky2_port *sky2)
1404 {
1405 struct sky2_hw *hw = sky2->hw;
1406 unsigned i;
1407
1408 sky2->rx_data_size = sky2_get_rx_data_size(sky2);
1409
1410 /* Fill Rx ring */
1411 for (i = 0; i < sky2->rx_pending; i++) {
1412 struct rx_ring_info *re = sky2->rx_ring + i;
1413
1414 re->skb = sky2_rx_alloc(sky2);
1415 if (!re->skb)
1416 return -ENOMEM;
1417
1418 if (sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size)) {
1419 dev_kfree_skb(re->skb);
1420 re->skb = NULL;
1421 return -ENOMEM;
1422 }
1423 }
1424 return 0;
1425 }
1426
1427 /*
1428 * Setup receiver buffer pool.
1429 * Normal case this ends up creating one list element for skb
1430 * in the receive ring. Worst case if using large MTU and each
1431 * allocation falls on a different 64 bit region, that results
1432 * in 6 list elements per ring entry.
1433 * One element is used for checksum enable/disable, and one
1434 * extra to avoid wrap.
1435 */
1436 static void sky2_rx_start(struct sky2_port *sky2)
1437 {
1438 struct sky2_hw *hw = sky2->hw;
1439 struct rx_ring_info *re;
1440 unsigned rxq = rxqaddr[sky2->port];
1441 unsigned i, thresh;
1442
1443 sky2->rx_put = sky2->rx_next = 0;
1444 sky2_qset(hw, rxq);
1445
1446 /* On PCI express lowering the watermark gives better performance */
1447 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
1448 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1449
1450 /* These chips have no ram buffer?
1451 * MAC Rx RAM Read is controlled by hardware */
1452 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1453 hw->chip_rev > CHIP_REV_YU_EC_U_A0)
1454 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1455
1456 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1457
1458 if (!(hw->flags & SKY2_HW_NEW_LE))
1459 rx_set_checksum(sky2);
1460
1461 if (!(hw->flags & SKY2_HW_RSS_BROKEN))
1462 rx_set_rss(sky2->netdev);
1463
1464 /* submit Rx ring */
1465 for (i = 0; i < sky2->rx_pending; i++) {
1466 re = sky2->rx_ring + i;
1467 sky2_rx_submit(sky2, re);
1468 }
1469
1470 /*
1471 * The receiver hangs if it receives frames larger than the
1472 * packet buffer. As a workaround, truncate oversize frames, but
1473 * the register is limited to 9 bits, so if you do frames > 2052
1474 * you better get the MTU right!
1475 */
1476 thresh = sky2_get_rx_threshold(sky2);
1477 if (thresh > 0x1ff)
1478 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1479 else {
1480 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1481 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1482 }
1483
1484 /* Tell chip about available buffers */
1485 sky2_rx_update(sky2, rxq);
1486
1487 if (hw->chip_id == CHIP_ID_YUKON_EX ||
1488 hw->chip_id == CHIP_ID_YUKON_SUPR) {
1489 /*
1490 * Disable flushing of non ASF packets;
1491 * must be done after initializing the BMUs;
1492 * drivers without ASF support should do this too, otherwise
1493 * it may happen that they cannot run on ASF devices;
1494 * remember that the MAC FIFO isn't reset during initialization.
1495 */
1496 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_MACSEC_FLUSH_OFF);
1497 }
1498
1499 if (hw->chip_id >= CHIP_ID_YUKON_SUPR) {
1500 /* Enable RX Home Address & Routing Header checksum fix */
1501 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_FL_CTRL),
1502 RX_IPV6_SA_MOB_ENA | RX_IPV6_DA_MOB_ENA);
1503
1504 /* Enable TX Home Address & Routing Header checksum fix */
1505 sky2_write32(hw, Q_ADDR(txqaddr[sky2->port], Q_TEST),
1506 TBMU_TEST_HOME_ADD_FIX_EN | TBMU_TEST_ROUTING_ADD_FIX_EN);
1507 }
1508 }
1509
1510 static int sky2_alloc_buffers(struct sky2_port *sky2)
1511 {
1512 struct sky2_hw *hw = sky2->hw;
1513
1514 /* must be power of 2 */
1515 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1516 sky2->tx_ring_size *
1517 sizeof(struct sky2_tx_le),
1518 &sky2->tx_le_map);
1519 if (!sky2->tx_le)
1520 goto nomem;
1521
1522 sky2->tx_ring = kcalloc(sky2->tx_ring_size, sizeof(struct tx_ring_info),
1523 GFP_KERNEL);
1524 if (!sky2->tx_ring)
1525 goto nomem;
1526
1527 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1528 &sky2->rx_le_map);
1529 if (!sky2->rx_le)
1530 goto nomem;
1531 memset(sky2->rx_le, 0, RX_LE_BYTES);
1532
1533 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1534 GFP_KERNEL);
1535 if (!sky2->rx_ring)
1536 goto nomem;
1537
1538 return sky2_alloc_rx_skbs(sky2);
1539 nomem:
1540 return -ENOMEM;
1541 }
1542
1543 static void sky2_free_buffers(struct sky2_port *sky2)
1544 {
1545 struct sky2_hw *hw = sky2->hw;
1546
1547 sky2_rx_clean(sky2);
1548
1549 if (sky2->rx_le) {
1550 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1551 sky2->rx_le, sky2->rx_le_map);
1552 sky2->rx_le = NULL;
1553 }
1554 if (sky2->tx_le) {
1555 pci_free_consistent(hw->pdev,
1556 sky2->tx_ring_size * sizeof(struct sky2_tx_le),
1557 sky2->tx_le, sky2->tx_le_map);
1558 sky2->tx_le = NULL;
1559 }
1560 kfree(sky2->tx_ring);
1561 kfree(sky2->rx_ring);
1562
1563 sky2->tx_ring = NULL;
1564 sky2->rx_ring = NULL;
1565 }
1566
1567 static void sky2_hw_up(struct sky2_port *sky2)
1568 {
1569 struct sky2_hw *hw = sky2->hw;
1570 unsigned port = sky2->port;
1571 u32 ramsize;
1572 int cap;
1573 struct net_device *otherdev = hw->dev[sky2->port^1];
1574
1575 tx_init(sky2);
1576
1577 /*
1578 * On dual port PCI-X card, there is an problem where status
1579 * can be received out of order due to split transactions
1580 */
1581 if (otherdev && netif_running(otherdev) &&
1582 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1583 u16 cmd;
1584
1585 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1586 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1587 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1588 }
1589
1590 sky2_mac_init(hw, port);
1591
1592 /* Register is number of 4K blocks on internal RAM buffer. */
1593 ramsize = sky2_read8(hw, B2_E_0) * 4;
1594 if (ramsize > 0) {
1595 u32 rxspace;
1596
1597 netdev_dbg(sky2->netdev, "ram buffer %dK\n", ramsize);
1598 if (ramsize < 16)
1599 rxspace = ramsize / 2;
1600 else
1601 rxspace = 8 + (2*(ramsize - 16))/3;
1602
1603 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1604 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1605
1606 /* Make sure SyncQ is disabled */
1607 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1608 RB_RST_SET);
1609 }
1610
1611 sky2_qset(hw, txqaddr[port]);
1612
1613 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1614 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1615 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1616
1617 /* Set almost empty threshold */
1618 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1619 hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1620 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1621
1622 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1623 sky2->tx_ring_size - 1);
1624
1625 #ifdef SKY2_VLAN_TAG_USED
1626 sky2_set_vlan_mode(hw, port, sky2->vlgrp != NULL);
1627 #endif
1628
1629 sky2_rx_start(sky2);
1630 }
1631
1632 /* Bring up network interface. */
1633 static int sky2_up(struct net_device *dev)
1634 {
1635 struct sky2_port *sky2 = netdev_priv(dev);
1636 struct sky2_hw *hw = sky2->hw;
1637 unsigned port = sky2->port;
1638 u32 imask;
1639 int err;
1640
1641 netif_carrier_off(dev);
1642
1643 err = sky2_alloc_buffers(sky2);
1644 if (err)
1645 goto err_out;
1646
1647 sky2_hw_up(sky2);
1648
1649 /* Enable interrupts from phy/mac for port */
1650 imask = sky2_read32(hw, B0_IMSK);
1651 imask |= portirq_msk[port];
1652 sky2_write32(hw, B0_IMSK, imask);
1653 sky2_read32(hw, B0_IMSK);
1654
1655 netif_info(sky2, ifup, dev, "enabling interface\n");
1656
1657 return 0;
1658
1659 err_out:
1660 sky2_free_buffers(sky2);
1661 return err;
1662 }
1663
1664 /* Modular subtraction in ring */
1665 static inline int tx_inuse(const struct sky2_port *sky2)
1666 {
1667 return (sky2->tx_prod - sky2->tx_cons) & (sky2->tx_ring_size - 1);
1668 }
1669
1670 /* Number of list elements available for next tx */
1671 static inline int tx_avail(const struct sky2_port *sky2)
1672 {
1673 return sky2->tx_pending - tx_inuse(sky2);
1674 }
1675
1676 /* Estimate of number of transmit list elements required */
1677 static unsigned tx_le_req(const struct sk_buff *skb)
1678 {
1679 unsigned count;
1680
1681 count = (skb_shinfo(skb)->nr_frags + 1)
1682 * (sizeof(dma_addr_t) / sizeof(u32));
1683
1684 if (skb_is_gso(skb))
1685 ++count;
1686 else if (sizeof(dma_addr_t) == sizeof(u32))
1687 ++count; /* possible vlan */
1688
1689 if (skb->ip_summed == CHECKSUM_PARTIAL)
1690 ++count;
1691
1692 return count;
1693 }
1694
1695 static void sky2_tx_unmap(struct pci_dev *pdev, struct tx_ring_info *re)
1696 {
1697 if (re->flags & TX_MAP_SINGLE)
1698 pci_unmap_single(pdev, dma_unmap_addr(re, mapaddr),
1699 dma_unmap_len(re, maplen),
1700 PCI_DMA_TODEVICE);
1701 else if (re->flags & TX_MAP_PAGE)
1702 pci_unmap_page(pdev, dma_unmap_addr(re, mapaddr),
1703 dma_unmap_len(re, maplen),
1704 PCI_DMA_TODEVICE);
1705 re->flags = 0;
1706 }
1707
1708 /*
1709 * Put one packet in ring for transmit.
1710 * A single packet can generate multiple list elements, and
1711 * the number of ring elements will probably be less than the number
1712 * of list elements used.
1713 */
1714 static netdev_tx_t sky2_xmit_frame(struct sk_buff *skb,
1715 struct net_device *dev)
1716 {
1717 struct sky2_port *sky2 = netdev_priv(dev);
1718 struct sky2_hw *hw = sky2->hw;
1719 struct sky2_tx_le *le = NULL;
1720 struct tx_ring_info *re;
1721 unsigned i, len;
1722 dma_addr_t mapping;
1723 u32 upper;
1724 u16 slot;
1725 u16 mss;
1726 u8 ctrl;
1727
1728 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1729 return NETDEV_TX_BUSY;
1730
1731 len = skb_headlen(skb);
1732 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1733
1734 if (pci_dma_mapping_error(hw->pdev, mapping))
1735 goto mapping_error;
1736
1737 slot = sky2->tx_prod;
1738 netif_printk(sky2, tx_queued, KERN_DEBUG, dev,
1739 "tx queued, slot %u, len %d\n", slot, skb->len);
1740
1741 /* Send high bits if needed */
1742 upper = upper_32_bits(mapping);
1743 if (upper != sky2->tx_last_upper) {
1744 le = get_tx_le(sky2, &slot);
1745 le->addr = cpu_to_le32(upper);
1746 sky2->tx_last_upper = upper;
1747 le->opcode = OP_ADDR64 | HW_OWNER;
1748 }
1749
1750 /* Check for TCP Segmentation Offload */
1751 mss = skb_shinfo(skb)->gso_size;
1752 if (mss != 0) {
1753
1754 if (!(hw->flags & SKY2_HW_NEW_LE))
1755 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1756
1757 if (mss != sky2->tx_last_mss) {
1758 le = get_tx_le(sky2, &slot);
1759 le->addr = cpu_to_le32(mss);
1760
1761 if (hw->flags & SKY2_HW_NEW_LE)
1762 le->opcode = OP_MSS | HW_OWNER;
1763 else
1764 le->opcode = OP_LRGLEN | HW_OWNER;
1765 sky2->tx_last_mss = mss;
1766 }
1767 }
1768
1769 ctrl = 0;
1770 #ifdef SKY2_VLAN_TAG_USED
1771 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1772 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1773 if (!le) {
1774 le = get_tx_le(sky2, &slot);
1775 le->addr = 0;
1776 le->opcode = OP_VLAN|HW_OWNER;
1777 } else
1778 le->opcode |= OP_VLAN;
1779 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1780 ctrl |= INS_VLAN;
1781 }
1782 #endif
1783
1784 /* Handle TCP checksum offload */
1785 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1786 /* On Yukon EX (some versions) encoding change. */
1787 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1788 ctrl |= CALSUM; /* auto checksum */
1789 else {
1790 const unsigned offset = skb_transport_offset(skb);
1791 u32 tcpsum;
1792
1793 tcpsum = offset << 16; /* sum start */
1794 tcpsum |= offset + skb->csum_offset; /* sum write */
1795
1796 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1797 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1798 ctrl |= UDPTCP;
1799
1800 if (tcpsum != sky2->tx_tcpsum) {
1801 sky2->tx_tcpsum = tcpsum;
1802
1803 le = get_tx_le(sky2, &slot);
1804 le->addr = cpu_to_le32(tcpsum);
1805 le->length = 0; /* initial checksum value */
1806 le->ctrl = 1; /* one packet */
1807 le->opcode = OP_TCPLISW | HW_OWNER;
1808 }
1809 }
1810 }
1811
1812 re = sky2->tx_ring + slot;
1813 re->flags = TX_MAP_SINGLE;
1814 dma_unmap_addr_set(re, mapaddr, mapping);
1815 dma_unmap_len_set(re, maplen, len);
1816
1817 le = get_tx_le(sky2, &slot);
1818 le->addr = cpu_to_le32(lower_32_bits(mapping));
1819 le->length = cpu_to_le16(len);
1820 le->ctrl = ctrl;
1821 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1822
1823
1824 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1825 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1826
1827 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1828 frag->size, PCI_DMA_TODEVICE);
1829
1830 if (pci_dma_mapping_error(hw->pdev, mapping))
1831 goto mapping_unwind;
1832
1833 upper = upper_32_bits(mapping);
1834 if (upper != sky2->tx_last_upper) {
1835 le = get_tx_le(sky2, &slot);
1836 le->addr = cpu_to_le32(upper);
1837 sky2->tx_last_upper = upper;
1838 le->opcode = OP_ADDR64 | HW_OWNER;
1839 }
1840
1841 re = sky2->tx_ring + slot;
1842 re->flags = TX_MAP_PAGE;
1843 dma_unmap_addr_set(re, mapaddr, mapping);
1844 dma_unmap_len_set(re, maplen, frag->size);
1845
1846 le = get_tx_le(sky2, &slot);
1847 le->addr = cpu_to_le32(lower_32_bits(mapping));
1848 le->length = cpu_to_le16(frag->size);
1849 le->ctrl = ctrl;
1850 le->opcode = OP_BUFFER | HW_OWNER;
1851 }
1852
1853 re->skb = skb;
1854 le->ctrl |= EOP;
1855
1856 sky2->tx_prod = slot;
1857
1858 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1859 netif_stop_queue(dev);
1860
1861 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1862
1863 return NETDEV_TX_OK;
1864
1865 mapping_unwind:
1866 for (i = sky2->tx_prod; i != slot; i = RING_NEXT(i, sky2->tx_ring_size)) {
1867 re = sky2->tx_ring + i;
1868
1869 sky2_tx_unmap(hw->pdev, re);
1870 }
1871
1872 mapping_error:
1873 if (net_ratelimit())
1874 dev_warn(&hw->pdev->dev, "%s: tx mapping error\n", dev->name);
1875 dev_kfree_skb(skb);
1876 return NETDEV_TX_OK;
1877 }
1878
1879 /*
1880 * Free ring elements from starting at tx_cons until "done"
1881 *
1882 * NB:
1883 * 1. The hardware will tell us about partial completion of multi-part
1884 * buffers so make sure not to free skb to early.
1885 * 2. This may run in parallel start_xmit because the it only
1886 * looks at the tail of the queue of FIFO (tx_cons), not
1887 * the head (tx_prod)
1888 */
1889 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1890 {
1891 struct net_device *dev = sky2->netdev;
1892 unsigned idx;
1893
1894 BUG_ON(done >= sky2->tx_ring_size);
1895
1896 for (idx = sky2->tx_cons; idx != done;
1897 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
1898 struct tx_ring_info *re = sky2->tx_ring + idx;
1899 struct sk_buff *skb = re->skb;
1900
1901 sky2_tx_unmap(sky2->hw->pdev, re);
1902
1903 if (skb) {
1904 netif_printk(sky2, tx_done, KERN_DEBUG, dev,
1905 "tx done %u\n", idx);
1906
1907 dev->stats.tx_packets++;
1908 dev->stats.tx_bytes += skb->len;
1909
1910 re->skb = NULL;
1911 dev_kfree_skb_any(skb);
1912
1913 sky2->tx_next = RING_NEXT(idx, sky2->tx_ring_size);
1914 }
1915 }
1916
1917 sky2->tx_cons = idx;
1918 smp_mb();
1919 }
1920
1921 static void sky2_tx_reset(struct sky2_hw *hw, unsigned port)
1922 {
1923 /* Disable Force Sync bit and Enable Alloc bit */
1924 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1925 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1926
1927 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1928 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1929 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1930
1931 /* Reset the PCI FIFO of the async Tx queue */
1932 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1933 BMU_RST_SET | BMU_FIFO_RST);
1934
1935 /* Reset the Tx prefetch units */
1936 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1937 PREF_UNIT_RST_SET);
1938
1939 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1940 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1941 }
1942
1943 static void sky2_hw_down(struct sky2_port *sky2)
1944 {
1945 struct sky2_hw *hw = sky2->hw;
1946 unsigned port = sky2->port;
1947 u16 ctrl;
1948
1949 /* Force flow control off */
1950 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1951
1952 /* Stop transmitter */
1953 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1954 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1955
1956 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1957 RB_RST_SET | RB_DIS_OP_MD);
1958
1959 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1960 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1961 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1962
1963 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1964
1965 /* Workaround shared GMAC reset */
1966 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 &&
1967 port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1968 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1969
1970 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1971
1972 /* Force any delayed status interrrupt and NAPI */
1973 sky2_write32(hw, STAT_LEV_TIMER_CNT, 0);
1974 sky2_write32(hw, STAT_TX_TIMER_CNT, 0);
1975 sky2_write32(hw, STAT_ISR_TIMER_CNT, 0);
1976 sky2_read8(hw, STAT_ISR_TIMER_CTRL);
1977
1978 sky2_rx_stop(sky2);
1979
1980 spin_lock_bh(&sky2->phy_lock);
1981 sky2_phy_power_down(hw, port);
1982 spin_unlock_bh(&sky2->phy_lock);
1983
1984 sky2_tx_reset(hw, port);
1985
1986 /* Free any pending frames stuck in HW queue */
1987 sky2_tx_complete(sky2, sky2->tx_prod);
1988 }
1989
1990 /* Network shutdown */
1991 static int sky2_down(struct net_device *dev)
1992 {
1993 struct sky2_port *sky2 = netdev_priv(dev);
1994 struct sky2_hw *hw = sky2->hw;
1995
1996 /* Never really got started! */
1997 if (!sky2->tx_le)
1998 return 0;
1999
2000 netif_info(sky2, ifdown, dev, "disabling interface\n");
2001
2002 /* Disable port IRQ */
2003 sky2_write32(hw, B0_IMSK,
2004 sky2_read32(hw, B0_IMSK) & ~portirq_msk[sky2->port]);
2005 sky2_read32(hw, B0_IMSK);
2006
2007 synchronize_irq(hw->pdev->irq);
2008 napi_synchronize(&hw->napi);
2009
2010 sky2_hw_down(sky2);
2011
2012 sky2_free_buffers(sky2);
2013
2014 return 0;
2015 }
2016
2017 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
2018 {
2019 if (hw->flags & SKY2_HW_FIBRE_PHY)
2020 return SPEED_1000;
2021
2022 if (!(hw->flags & SKY2_HW_GIGABIT)) {
2023 if (aux & PHY_M_PS_SPEED_100)
2024 return SPEED_100;
2025 else
2026 return SPEED_10;
2027 }
2028
2029 switch (aux & PHY_M_PS_SPEED_MSK) {
2030 case PHY_M_PS_SPEED_1000:
2031 return SPEED_1000;
2032 case PHY_M_PS_SPEED_100:
2033 return SPEED_100;
2034 default:
2035 return SPEED_10;
2036 }
2037 }
2038
2039 static void sky2_link_up(struct sky2_port *sky2)
2040 {
2041 struct sky2_hw *hw = sky2->hw;
2042 unsigned port = sky2->port;
2043 u16 reg;
2044 static const char *fc_name[] = {
2045 [FC_NONE] = "none",
2046 [FC_TX] = "tx",
2047 [FC_RX] = "rx",
2048 [FC_BOTH] = "both",
2049 };
2050
2051 /* enable Rx/Tx */
2052 reg = gma_read16(hw, port, GM_GP_CTRL);
2053 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
2054 gma_write16(hw, port, GM_GP_CTRL, reg);
2055
2056 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
2057
2058 netif_carrier_on(sky2->netdev);
2059
2060 mod_timer(&hw->watchdog_timer, jiffies + 1);
2061
2062 /* Turn on link LED */
2063 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
2064 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
2065
2066 netif_info(sky2, link, sky2->netdev,
2067 "Link is up at %d Mbps, %s duplex, flow control %s\n",
2068 sky2->speed,
2069 sky2->duplex == DUPLEX_FULL ? "full" : "half",
2070 fc_name[sky2->flow_status]);
2071 }
2072
2073 static void sky2_link_down(struct sky2_port *sky2)
2074 {
2075 struct sky2_hw *hw = sky2->hw;
2076 unsigned port = sky2->port;
2077 u16 reg;
2078
2079 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
2080
2081 reg = gma_read16(hw, port, GM_GP_CTRL);
2082 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
2083 gma_write16(hw, port, GM_GP_CTRL, reg);
2084
2085 netif_carrier_off(sky2->netdev);
2086
2087 /* Turn off link LED */
2088 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
2089
2090 netif_info(sky2, link, sky2->netdev, "Link is down\n");
2091
2092 sky2_phy_init(hw, port);
2093 }
2094
2095 static enum flow_control sky2_flow(int rx, int tx)
2096 {
2097 if (rx)
2098 return tx ? FC_BOTH : FC_RX;
2099 else
2100 return tx ? FC_TX : FC_NONE;
2101 }
2102
2103 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
2104 {
2105 struct sky2_hw *hw = sky2->hw;
2106 unsigned port = sky2->port;
2107 u16 advert, lpa;
2108
2109 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
2110 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
2111 if (lpa & PHY_M_AN_RF) {
2112 netdev_err(sky2->netdev, "remote fault\n");
2113 return -1;
2114 }
2115
2116 if (!(aux & PHY_M_PS_SPDUP_RES)) {
2117 netdev_err(sky2->netdev, "speed/duplex mismatch\n");
2118 return -1;
2119 }
2120
2121 sky2->speed = sky2_phy_speed(hw, aux);
2122 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2123
2124 /* Since the pause result bits seem to in different positions on
2125 * different chips. look at registers.
2126 */
2127 if (hw->flags & SKY2_HW_FIBRE_PHY) {
2128 /* Shift for bits in fiber PHY */
2129 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
2130 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
2131
2132 if (advert & ADVERTISE_1000XPAUSE)
2133 advert |= ADVERTISE_PAUSE_CAP;
2134 if (advert & ADVERTISE_1000XPSE_ASYM)
2135 advert |= ADVERTISE_PAUSE_ASYM;
2136 if (lpa & LPA_1000XPAUSE)
2137 lpa |= LPA_PAUSE_CAP;
2138 if (lpa & LPA_1000XPAUSE_ASYM)
2139 lpa |= LPA_PAUSE_ASYM;
2140 }
2141
2142 sky2->flow_status = FC_NONE;
2143 if (advert & ADVERTISE_PAUSE_CAP) {
2144 if (lpa & LPA_PAUSE_CAP)
2145 sky2->flow_status = FC_BOTH;
2146 else if (advert & ADVERTISE_PAUSE_ASYM)
2147 sky2->flow_status = FC_RX;
2148 } else if (advert & ADVERTISE_PAUSE_ASYM) {
2149 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
2150 sky2->flow_status = FC_TX;
2151 }
2152
2153 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000 &&
2154 !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
2155 sky2->flow_status = FC_NONE;
2156
2157 if (sky2->flow_status & FC_TX)
2158 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2159 else
2160 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2161
2162 return 0;
2163 }
2164
2165 /* Interrupt from PHY */
2166 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
2167 {
2168 struct net_device *dev = hw->dev[port];
2169 struct sky2_port *sky2 = netdev_priv(dev);
2170 u16 istatus, phystat;
2171
2172 if (!netif_running(dev))
2173 return;
2174
2175 spin_lock(&sky2->phy_lock);
2176 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2177 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2178
2179 netif_info(sky2, intr, sky2->netdev, "phy interrupt status 0x%x 0x%x\n",
2180 istatus, phystat);
2181
2182 if (istatus & PHY_M_IS_AN_COMPL) {
2183 if (sky2_autoneg_done(sky2, phystat) == 0 &&
2184 !netif_carrier_ok(dev))
2185 sky2_link_up(sky2);
2186 goto out;
2187 }
2188
2189 if (istatus & PHY_M_IS_LSP_CHANGE)
2190 sky2->speed = sky2_phy_speed(hw, phystat);
2191
2192 if (istatus & PHY_M_IS_DUP_CHANGE)
2193 sky2->duplex =
2194 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2195
2196 if (istatus & PHY_M_IS_LST_CHANGE) {
2197 if (phystat & PHY_M_PS_LINK_UP)
2198 sky2_link_up(sky2);
2199 else
2200 sky2_link_down(sky2);
2201 }
2202 out:
2203 spin_unlock(&sky2->phy_lock);
2204 }
2205
2206 /* Special quick link interrupt (Yukon-2 Optima only) */
2207 static void sky2_qlink_intr(struct sky2_hw *hw)
2208 {
2209 struct sky2_port *sky2 = netdev_priv(hw->dev[0]);
2210 u32 imask;
2211 u16 phy;
2212
2213 /* disable irq */
2214 imask = sky2_read32(hw, B0_IMSK);
2215 imask &= ~Y2_IS_PHY_QLNK;
2216 sky2_write32(hw, B0_IMSK, imask);
2217
2218 /* reset PHY Link Detect */
2219 phy = sky2_pci_read16(hw, PSM_CONFIG_REG4);
2220 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2221 sky2_pci_write16(hw, PSM_CONFIG_REG4, phy | 1);
2222 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2223
2224 sky2_link_up(sky2);
2225 }
2226
2227 /* Transmit timeout is only called if we are running, carrier is up
2228 * and tx queue is full (stopped).
2229 */
2230 static void sky2_tx_timeout(struct net_device *dev)
2231 {
2232 struct sky2_port *sky2 = netdev_priv(dev);
2233 struct sky2_hw *hw = sky2->hw;
2234
2235 netif_err(sky2, timer, dev, "tx timeout\n");
2236
2237 netdev_printk(KERN_DEBUG, dev, "transmit ring %u .. %u report=%u done=%u\n",
2238 sky2->tx_cons, sky2->tx_prod,
2239 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
2240 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
2241
2242 /* can't restart safely under softirq */
2243 schedule_work(&hw->restart_work);
2244 }
2245
2246 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
2247 {
2248 struct sky2_port *sky2 = netdev_priv(dev);
2249 struct sky2_hw *hw = sky2->hw;
2250 unsigned port = sky2->port;
2251 int err;
2252 u16 ctl, mode;
2253 u32 imask;
2254
2255 /* MTU size outside the spec */
2256 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2257 return -EINVAL;
2258
2259 /* MTU > 1500 on yukon FE and FE+ not allowed */
2260 if (new_mtu > ETH_DATA_LEN &&
2261 (hw->chip_id == CHIP_ID_YUKON_FE ||
2262 hw->chip_id == CHIP_ID_YUKON_FE_P))
2263 return -EINVAL;
2264
2265 /* TSO, etc on Yukon Ultra and MTU > 1500 not supported */
2266 if (new_mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U)
2267 dev->features &= ~(NETIF_F_TSO|NETIF_F_SG|NETIF_F_ALL_CSUM);
2268
2269 if (!netif_running(dev)) {
2270 dev->mtu = new_mtu;
2271 return 0;
2272 }
2273
2274 imask = sky2_read32(hw, B0_IMSK);
2275 sky2_write32(hw, B0_IMSK, 0);
2276
2277 dev->trans_start = jiffies; /* prevent tx timeout */
2278 napi_disable(&hw->napi);
2279 netif_tx_disable(dev);
2280
2281 synchronize_irq(hw->pdev->irq);
2282
2283 if (!(hw->flags & SKY2_HW_RAM_BUFFER))
2284 sky2_set_tx_stfwd(hw, port);
2285
2286 ctl = gma_read16(hw, port, GM_GP_CTRL);
2287 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2288 sky2_rx_stop(sky2);
2289 sky2_rx_clean(sky2);
2290
2291 dev->mtu = new_mtu;
2292
2293 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
2294 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
2295
2296 if (dev->mtu > ETH_DATA_LEN)
2297 mode |= GM_SMOD_JUMBO_ENA;
2298
2299 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2300
2301 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2302
2303 err = sky2_alloc_rx_skbs(sky2);
2304 if (!err)
2305 sky2_rx_start(sky2);
2306 else
2307 sky2_rx_clean(sky2);
2308 sky2_write32(hw, B0_IMSK, imask);
2309
2310 sky2_read32(hw, B0_Y2_SP_LISR);
2311 napi_enable(&hw->napi);
2312
2313 if (err)
2314 dev_close(dev);
2315 else {
2316 gma_write16(hw, port, GM_GP_CTRL, ctl);
2317
2318 netif_wake_queue(dev);
2319 }
2320
2321 return err;
2322 }
2323
2324 /* For small just reuse existing skb for next receive */
2325 static struct sk_buff *receive_copy(struct sky2_port *sky2,
2326 const struct rx_ring_info *re,
2327 unsigned length)
2328 {
2329 struct sk_buff *skb;
2330
2331 skb = netdev_alloc_skb_ip_align(sky2->netdev, length);
2332 if (likely(skb)) {
2333 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2334 length, PCI_DMA_FROMDEVICE);
2335 skb_copy_from_linear_data(re->skb, skb->data, length);
2336 skb->ip_summed = re->skb->ip_summed;
2337 skb->csum = re->skb->csum;
2338 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2339 length, PCI_DMA_FROMDEVICE);
2340 re->skb->ip_summed = CHECKSUM_NONE;
2341 skb_put(skb, length);
2342 }
2343 return skb;
2344 }
2345
2346 /* Adjust length of skb with fragments to match received data */
2347 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2348 unsigned int length)
2349 {
2350 int i, num_frags;
2351 unsigned int size;
2352
2353 /* put header into skb */
2354 size = min(length, hdr_space);
2355 skb->tail += size;
2356 skb->len += size;
2357 length -= size;
2358
2359 num_frags = skb_shinfo(skb)->nr_frags;
2360 for (i = 0; i < num_frags; i++) {
2361 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2362
2363 if (length == 0) {
2364 /* don't need this page */
2365 __free_page(frag->page);
2366 --skb_shinfo(skb)->nr_frags;
2367 } else {
2368 size = min(length, (unsigned) PAGE_SIZE);
2369
2370 frag->size = size;
2371 skb->data_len += size;
2372 skb->truesize += size;
2373 skb->len += size;
2374 length -= size;
2375 }
2376 }
2377 }
2378
2379 /* Normal packet - take skb from ring element and put in a new one */
2380 static struct sk_buff *receive_new(struct sky2_port *sky2,
2381 struct rx_ring_info *re,
2382 unsigned int length)
2383 {
2384 struct sk_buff *skb;
2385 struct rx_ring_info nre;
2386 unsigned hdr_space = sky2->rx_data_size;
2387
2388 nre.skb = sky2_rx_alloc(sky2);
2389 if (unlikely(!nre.skb))
2390 goto nobuf;
2391
2392 if (sky2_rx_map_skb(sky2->hw->pdev, &nre, hdr_space))
2393 goto nomap;
2394
2395 skb = re->skb;
2396 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2397 prefetch(skb->data);
2398 *re = nre;
2399
2400 if (skb_shinfo(skb)->nr_frags)
2401 skb_put_frags(skb, hdr_space, length);
2402 else
2403 skb_put(skb, length);
2404 return skb;
2405
2406 nomap:
2407 dev_kfree_skb(nre.skb);
2408 nobuf:
2409 return NULL;
2410 }
2411
2412 /*
2413 * Receive one packet.
2414 * For larger packets, get new buffer.
2415 */
2416 static struct sk_buff *sky2_receive(struct net_device *dev,
2417 u16 length, u32 status)
2418 {
2419 struct sky2_port *sky2 = netdev_priv(dev);
2420 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2421 struct sk_buff *skb = NULL;
2422 u16 count = (status & GMR_FS_LEN) >> 16;
2423
2424 #ifdef SKY2_VLAN_TAG_USED
2425 /* Account for vlan tag */
2426 if (sky2->vlgrp && (status & GMR_FS_VLAN))
2427 count -= VLAN_HLEN;
2428 #endif
2429
2430 netif_printk(sky2, rx_status, KERN_DEBUG, dev,
2431 "rx slot %u status 0x%x len %d\n",
2432 sky2->rx_next, status, length);
2433
2434 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2435 prefetch(sky2->rx_ring + sky2->rx_next);
2436
2437 /* This chip has hardware problems that generates bogus status.
2438 * So do only marginal checking and expect higher level protocols
2439 * to handle crap frames.
2440 */
2441 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2442 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2443 length != count)
2444 goto okay;
2445
2446 if (status & GMR_FS_ANY_ERR)
2447 goto error;
2448
2449 if (!(status & GMR_FS_RX_OK))
2450 goto resubmit;
2451
2452 /* if length reported by DMA does not match PHY, packet was truncated */
2453 if (length != count)
2454 goto len_error;
2455
2456 okay:
2457 if (length < copybreak)
2458 skb = receive_copy(sky2, re, length);
2459 else
2460 skb = receive_new(sky2, re, length);
2461
2462 dev->stats.rx_dropped += (skb == NULL);
2463
2464 resubmit:
2465 sky2_rx_submit(sky2, re);
2466
2467 return skb;
2468
2469 len_error:
2470 /* Truncation of overlength packets
2471 causes PHY length to not match MAC length */
2472 ++dev->stats.rx_length_errors;
2473 if (net_ratelimit())
2474 netif_info(sky2, rx_err, dev,
2475 "rx length error: status %#x length %d\n",
2476 status, length);
2477 goto resubmit;
2478
2479 error:
2480 ++dev->stats.rx_errors;
2481 if (status & GMR_FS_RX_FF_OV) {
2482 dev->stats.rx_over_errors++;
2483 goto resubmit;
2484 }
2485
2486 if (net_ratelimit())
2487 netif_info(sky2, rx_err, dev,
2488 "rx error, status 0x%x length %d\n", status, length);
2489
2490 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
2491 dev->stats.rx_length_errors++;
2492 if (status & GMR_FS_FRAGMENT)
2493 dev->stats.rx_frame_errors++;
2494 if (status & GMR_FS_CRC_ERR)
2495 dev->stats.rx_crc_errors++;
2496
2497 goto resubmit;
2498 }
2499
2500 /* Transmit complete */
2501 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2502 {
2503 struct sky2_port *sky2 = netdev_priv(dev);
2504
2505 if (netif_running(dev)) {
2506 sky2_tx_complete(sky2, last);
2507
2508 /* Wake unless it's detached, and called e.g. from sky2_down() */
2509 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
2510 netif_wake_queue(dev);
2511 }
2512 }
2513
2514 static inline void sky2_skb_rx(const struct sky2_port *sky2,
2515 u32 status, struct sk_buff *skb)
2516 {
2517 #ifdef SKY2_VLAN_TAG_USED
2518 u16 vlan_tag = be16_to_cpu(sky2->rx_tag);
2519 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
2520 if (skb->ip_summed == CHECKSUM_NONE)
2521 vlan_hwaccel_receive_skb(skb, sky2->vlgrp, vlan_tag);
2522 else
2523 vlan_gro_receive(&sky2->hw->napi, sky2->vlgrp,
2524 vlan_tag, skb);
2525 return;
2526 }
2527 #endif
2528 if (skb->ip_summed == CHECKSUM_NONE)
2529 netif_receive_skb(skb);
2530 else
2531 napi_gro_receive(&sky2->hw->napi, skb);
2532 }
2533
2534 static inline void sky2_rx_done(struct sky2_hw *hw, unsigned port,
2535 unsigned packets, unsigned bytes)
2536 {
2537 if (packets) {
2538 struct net_device *dev = hw->dev[port];
2539
2540 dev->stats.rx_packets += packets;
2541 dev->stats.rx_bytes += bytes;
2542 dev->last_rx = jiffies;
2543 sky2_rx_update(netdev_priv(dev), rxqaddr[port]);
2544 }
2545 }
2546
2547 static void sky2_rx_checksum(struct sky2_port *sky2, u32 status)
2548 {
2549 /* If this happens then driver assuming wrong format for chip type */
2550 BUG_ON(sky2->hw->flags & SKY2_HW_NEW_LE);
2551
2552 /* Both checksum counters are programmed to start at
2553 * the same offset, so unless there is a problem they
2554 * should match. This failure is an early indication that
2555 * hardware receive checksumming won't work.
2556 */
2557 if (likely((u16)(status >> 16) == (u16)status)) {
2558 struct sk_buff *skb = sky2->rx_ring[sky2->rx_next].skb;
2559 skb->ip_summed = CHECKSUM_COMPLETE;
2560 skb->csum = le16_to_cpu(status);
2561 } else {
2562 dev_notice(&sky2->hw->pdev->dev,
2563 "%s: receive checksum problem (status = %#x)\n",
2564 sky2->netdev->name, status);
2565
2566 /* Disable checksum offload */
2567 sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM;
2568 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2569 BMU_DIS_RX_CHKSUM);
2570 }
2571 }
2572
2573 static void sky2_rx_hash(struct sky2_port *sky2, u32 status)
2574 {
2575 struct sk_buff *skb;
2576
2577 skb = sky2->rx_ring[sky2->rx_next].skb;
2578 skb->rxhash = le32_to_cpu(status);
2579 }
2580
2581 /* Process status response ring */
2582 static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
2583 {
2584 int work_done = 0;
2585 unsigned int total_bytes[2] = { 0 };
2586 unsigned int total_packets[2] = { 0 };
2587
2588 rmb();
2589 do {
2590 struct sky2_port *sky2;
2591 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2592 unsigned port;
2593 struct net_device *dev;
2594 struct sk_buff *skb;
2595 u32 status;
2596 u16 length;
2597 u8 opcode = le->opcode;
2598
2599 if (!(opcode & HW_OWNER))
2600 break;
2601
2602 hw->st_idx = RING_NEXT(hw->st_idx, hw->st_size);
2603
2604 port = le->css & CSS_LINK_BIT;
2605 dev = hw->dev[port];
2606 sky2 = netdev_priv(dev);
2607 length = le16_to_cpu(le->length);
2608 status = le32_to_cpu(le->status);
2609
2610 le->opcode = 0;
2611 switch (opcode & ~HW_OWNER) {
2612 case OP_RXSTAT:
2613 total_packets[port]++;
2614 total_bytes[port] += length;
2615
2616 skb = sky2_receive(dev, length, status);
2617 if (!skb)
2618 break;
2619
2620 /* This chip reports checksum status differently */
2621 if (hw->flags & SKY2_HW_NEW_LE) {
2622 if ((sky2->flags & SKY2_FLAG_RX_CHECKSUM) &&
2623 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2624 (le->css & CSS_TCPUDPCSOK))
2625 skb->ip_summed = CHECKSUM_UNNECESSARY;
2626 else
2627 skb->ip_summed = CHECKSUM_NONE;
2628 }
2629
2630 skb->protocol = eth_type_trans(skb, dev);
2631
2632 sky2_skb_rx(sky2, status, skb);
2633
2634 /* Stop after net poll weight */
2635 if (++work_done >= to_do)
2636 goto exit_loop;
2637 break;
2638
2639 #ifdef SKY2_VLAN_TAG_USED
2640 case OP_RXVLAN:
2641 sky2->rx_tag = length;
2642 break;
2643
2644 case OP_RXCHKSVLAN:
2645 sky2->rx_tag = length;
2646 /* fall through */
2647 #endif
2648 case OP_RXCHKS:
2649 if (likely(sky2->flags & SKY2_FLAG_RX_CHECKSUM))
2650 sky2_rx_checksum(sky2, status);
2651 break;
2652
2653 case OP_RSS_HASH:
2654 sky2_rx_hash(sky2, status);
2655 break;
2656
2657 case OP_TXINDEXLE:
2658 /* TX index reports status for both ports */
2659 sky2_tx_done(hw->dev[0], status & 0xfff);
2660 if (hw->dev[1])
2661 sky2_tx_done(hw->dev[1],
2662 ((status >> 24) & 0xff)
2663 | (u16)(length & 0xf) << 8);
2664 break;
2665
2666 default:
2667 if (net_ratelimit())
2668 pr_warning("unknown status opcode 0x%x\n", opcode);
2669 }
2670 } while (hw->st_idx != idx);
2671
2672 /* Fully processed status ring so clear irq */
2673 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2674
2675 exit_loop:
2676 sky2_rx_done(hw, 0, total_packets[0], total_bytes[0]);
2677 sky2_rx_done(hw, 1, total_packets[1], total_bytes[1]);
2678
2679 return work_done;
2680 }
2681
2682 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2683 {
2684 struct net_device *dev = hw->dev[port];
2685
2686 if (net_ratelimit())
2687 netdev_info(dev, "hw error interrupt status 0x%x\n", status);
2688
2689 if (status & Y2_IS_PAR_RD1) {
2690 if (net_ratelimit())
2691 netdev_err(dev, "ram data read parity error\n");
2692 /* Clear IRQ */
2693 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2694 }
2695
2696 if (status & Y2_IS_PAR_WR1) {
2697 if (net_ratelimit())
2698 netdev_err(dev, "ram data write parity error\n");
2699
2700 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2701 }
2702
2703 if (status & Y2_IS_PAR_MAC1) {
2704 if (net_ratelimit())
2705 netdev_err(dev, "MAC parity error\n");
2706 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2707 }
2708
2709 if (status & Y2_IS_PAR_RX1) {
2710 if (net_ratelimit())
2711 netdev_err(dev, "RX parity error\n");
2712 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2713 }
2714
2715 if (status & Y2_IS_TCP_TXA1) {
2716 if (net_ratelimit())
2717 netdev_err(dev, "TCP segmentation error\n");
2718 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2719 }
2720 }
2721
2722 static void sky2_hw_intr(struct sky2_hw *hw)
2723 {
2724 struct pci_dev *pdev = hw->pdev;
2725 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2726 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2727
2728 status &= hwmsk;
2729
2730 if (status & Y2_IS_TIST_OV)
2731 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2732
2733 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2734 u16 pci_err;
2735
2736 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2737 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2738 if (net_ratelimit())
2739 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
2740 pci_err);
2741
2742 sky2_pci_write16(hw, PCI_STATUS,
2743 pci_err | PCI_STATUS_ERROR_BITS);
2744 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2745 }
2746
2747 if (status & Y2_IS_PCI_EXP) {
2748 /* PCI-Express uncorrectable Error occurred */
2749 u32 err;
2750
2751 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2752 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2753 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2754 0xfffffffful);
2755 if (net_ratelimit())
2756 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
2757
2758 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2759 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2760 }
2761
2762 if (status & Y2_HWE_L1_MASK)
2763 sky2_hw_error(hw, 0, status);
2764 status >>= 8;
2765 if (status & Y2_HWE_L1_MASK)
2766 sky2_hw_error(hw, 1, status);
2767 }
2768
2769 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2770 {
2771 struct net_device *dev = hw->dev[port];
2772 struct sky2_port *sky2 = netdev_priv(dev);
2773 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2774
2775 netif_info(sky2, intr, dev, "mac interrupt status 0x%x\n", status);
2776
2777 if (status & GM_IS_RX_CO_OV)
2778 gma_read16(hw, port, GM_RX_IRQ_SRC);
2779
2780 if (status & GM_IS_TX_CO_OV)
2781 gma_read16(hw, port, GM_TX_IRQ_SRC);
2782
2783 if (status & GM_IS_RX_FF_OR) {
2784 ++dev->stats.rx_fifo_errors;
2785 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2786 }
2787
2788 if (status & GM_IS_TX_FF_UR) {
2789 ++dev->stats.tx_fifo_errors;
2790 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2791 }
2792 }
2793
2794 /* This should never happen it is a bug. */
2795 static void sky2_le_error(struct sky2_hw *hw, unsigned port, u16 q)
2796 {
2797 struct net_device *dev = hw->dev[port];
2798 u16 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2799
2800 dev_err(&hw->pdev->dev, "%s: descriptor error q=%#x get=%u put=%u\n",
2801 dev->name, (unsigned) q, (unsigned) idx,
2802 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2803
2804 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2805 }
2806
2807 static int sky2_rx_hung(struct net_device *dev)
2808 {
2809 struct sky2_port *sky2 = netdev_priv(dev);
2810 struct sky2_hw *hw = sky2->hw;
2811 unsigned port = sky2->port;
2812 unsigned rxq = rxqaddr[port];
2813 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2814 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2815 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2816 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2817
2818 /* If idle and MAC or PCI is stuck */
2819 if (sky2->check.last == dev->last_rx &&
2820 ((mac_rp == sky2->check.mac_rp &&
2821 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2822 /* Check if the PCI RX hang */
2823 (fifo_rp == sky2->check.fifo_rp &&
2824 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2825 netdev_printk(KERN_DEBUG, dev,
2826 "hung mac %d:%d fifo %d (%d:%d)\n",
2827 mac_lev, mac_rp, fifo_lev,
2828 fifo_rp, sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2829 return 1;
2830 } else {
2831 sky2->check.last = dev->last_rx;
2832 sky2->check.mac_rp = mac_rp;
2833 sky2->check.mac_lev = mac_lev;
2834 sky2->check.fifo_rp = fifo_rp;
2835 sky2->check.fifo_lev = fifo_lev;
2836 return 0;
2837 }
2838 }
2839
2840 static void sky2_watchdog(unsigned long arg)
2841 {
2842 struct sky2_hw *hw = (struct sky2_hw *) arg;
2843
2844 /* Check for lost IRQ once a second */
2845 if (sky2_read32(hw, B0_ISRC)) {
2846 napi_schedule(&hw->napi);
2847 } else {
2848 int i, active = 0;
2849
2850 for (i = 0; i < hw->ports; i++) {
2851 struct net_device *dev = hw->dev[i];
2852 if (!netif_running(dev))
2853 continue;
2854 ++active;
2855
2856 /* For chips with Rx FIFO, check if stuck */
2857 if ((hw->flags & SKY2_HW_RAM_BUFFER) &&
2858 sky2_rx_hung(dev)) {
2859 netdev_info(dev, "receiver hang detected\n");
2860 schedule_work(&hw->restart_work);
2861 return;
2862 }
2863 }
2864
2865 if (active == 0)
2866 return;
2867 }
2868
2869 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
2870 }
2871
2872 /* Hardware/software error handling */
2873 static void sky2_err_intr(struct sky2_hw *hw, u32 status)
2874 {
2875 if (net_ratelimit())
2876 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
2877
2878 if (status & Y2_IS_HW_ERR)
2879 sky2_hw_intr(hw);
2880
2881 if (status & Y2_IS_IRQ_MAC1)
2882 sky2_mac_intr(hw, 0);
2883
2884 if (status & Y2_IS_IRQ_MAC2)
2885 sky2_mac_intr(hw, 1);
2886
2887 if (status & Y2_IS_CHK_RX1)
2888 sky2_le_error(hw, 0, Q_R1);
2889
2890 if (status & Y2_IS_CHK_RX2)
2891 sky2_le_error(hw, 1, Q_R2);
2892
2893 if (status & Y2_IS_CHK_TXA1)
2894 sky2_le_error(hw, 0, Q_XA1);
2895
2896 if (status & Y2_IS_CHK_TXA2)
2897 sky2_le_error(hw, 1, Q_XA2);
2898 }
2899
2900 static int sky2_poll(struct napi_struct *napi, int work_limit)
2901 {
2902 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
2903 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2904 int work_done = 0;
2905 u16 idx;
2906
2907 if (unlikely(status & Y2_IS_ERROR))
2908 sky2_err_intr(hw, status);
2909
2910 if (status & Y2_IS_IRQ_PHY1)
2911 sky2_phy_intr(hw, 0);
2912
2913 if (status & Y2_IS_IRQ_PHY2)
2914 sky2_phy_intr(hw, 1);
2915
2916 if (status & Y2_IS_PHY_QLNK)
2917 sky2_qlink_intr(hw);
2918
2919 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
2920 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
2921
2922 if (work_done >= work_limit)
2923 goto done;
2924 }
2925
2926 napi_complete(napi);
2927 sky2_read32(hw, B0_Y2_SP_LISR);
2928 done:
2929
2930 return work_done;
2931 }
2932
2933 static irqreturn_t sky2_intr(int irq, void *dev_id)
2934 {
2935 struct sky2_hw *hw = dev_id;
2936 u32 status;
2937
2938 /* Reading this mask interrupts as side effect */
2939 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2940 if (status == 0 || status == ~0)
2941 return IRQ_NONE;
2942
2943 prefetch(&hw->st_le[hw->st_idx]);
2944
2945 napi_schedule(&hw->napi);
2946
2947 return IRQ_HANDLED;
2948 }
2949
2950 #ifdef CONFIG_NET_POLL_CONTROLLER
2951 static void sky2_netpoll(struct net_device *dev)
2952 {
2953 struct sky2_port *sky2 = netdev_priv(dev);
2954
2955 napi_schedule(&sky2->hw->napi);
2956 }
2957 #endif
2958
2959 /* Chip internal frequency for clock calculations */
2960 static u32 sky2_mhz(const struct sky2_hw *hw)
2961 {
2962 switch (hw->chip_id) {
2963 case CHIP_ID_YUKON_EC:
2964 case CHIP_ID_YUKON_EC_U:
2965 case CHIP_ID_YUKON_EX:
2966 case CHIP_ID_YUKON_SUPR:
2967 case CHIP_ID_YUKON_UL_2:
2968 case CHIP_ID_YUKON_OPT:
2969 return 125;
2970
2971 case CHIP_ID_YUKON_FE:
2972 return 100;
2973
2974 case CHIP_ID_YUKON_FE_P:
2975 return 50;
2976
2977 case CHIP_ID_YUKON_XL:
2978 return 156;
2979
2980 default:
2981 BUG();
2982 }
2983 }
2984
2985 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2986 {
2987 return sky2_mhz(hw) * us;
2988 }
2989
2990 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2991 {
2992 return clk / sky2_mhz(hw);
2993 }
2994
2995
2996 static int __devinit sky2_init(struct sky2_hw *hw)
2997 {
2998 u8 t8;
2999
3000 /* Enable all clocks and check for bad PCI access */
3001 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
3002
3003 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3004
3005 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
3006 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
3007
3008 switch(hw->chip_id) {
3009 case CHIP_ID_YUKON_XL:
3010 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
3011 if (hw->chip_rev < CHIP_REV_YU_XL_A2)
3012 hw->flags |= SKY2_HW_RSS_BROKEN;
3013 break;
3014
3015 case CHIP_ID_YUKON_EC_U:
3016 hw->flags = SKY2_HW_GIGABIT
3017 | SKY2_HW_NEWER_PHY
3018 | SKY2_HW_ADV_POWER_CTL;
3019 break;
3020
3021 case CHIP_ID_YUKON_EX:
3022 hw->flags = SKY2_HW_GIGABIT
3023 | SKY2_HW_NEWER_PHY
3024 | SKY2_HW_NEW_LE
3025 | SKY2_HW_ADV_POWER_CTL;
3026
3027 /* New transmit checksum */
3028 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
3029 hw->flags |= SKY2_HW_AUTO_TX_SUM;
3030 break;
3031
3032 case CHIP_ID_YUKON_EC:
3033 /* This rev is really old, and requires untested workarounds */
3034 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
3035 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
3036 return -EOPNOTSUPP;
3037 }
3038 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_RSS_BROKEN;
3039 break;
3040
3041 case CHIP_ID_YUKON_FE:
3042 hw->flags = SKY2_HW_RSS_BROKEN;
3043 break;
3044
3045 case CHIP_ID_YUKON_FE_P:
3046 hw->flags = SKY2_HW_NEWER_PHY
3047 | SKY2_HW_NEW_LE
3048 | SKY2_HW_AUTO_TX_SUM
3049 | SKY2_HW_ADV_POWER_CTL;
3050 break;
3051
3052 case CHIP_ID_YUKON_SUPR:
3053 hw->flags = SKY2_HW_GIGABIT
3054 | SKY2_HW_NEWER_PHY
3055 | SKY2_HW_NEW_LE
3056 | SKY2_HW_AUTO_TX_SUM
3057 | SKY2_HW_ADV_POWER_CTL;
3058 break;
3059
3060 case CHIP_ID_YUKON_UL_2:
3061 hw->flags = SKY2_HW_GIGABIT
3062 | SKY2_HW_ADV_POWER_CTL;
3063 break;
3064
3065 case CHIP_ID_YUKON_OPT:
3066 hw->flags = SKY2_HW_GIGABIT
3067 | SKY2_HW_NEW_LE
3068 | SKY2_HW_ADV_POWER_CTL;
3069 break;
3070
3071 default:
3072 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
3073 hw->chip_id);
3074 return -EOPNOTSUPP;
3075 }
3076
3077 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
3078 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
3079 hw->flags |= SKY2_HW_FIBRE_PHY;
3080
3081 hw->ports = 1;
3082 t8 = sky2_read8(hw, B2_Y2_HW_RES);
3083 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
3084 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
3085 ++hw->ports;
3086 }
3087
3088 if (sky2_read8(hw, B2_E_0))
3089 hw->flags |= SKY2_HW_RAM_BUFFER;
3090
3091 return 0;
3092 }
3093
3094 static void sky2_reset(struct sky2_hw *hw)
3095 {
3096 struct pci_dev *pdev = hw->pdev;
3097 u16 status;
3098 int i, cap;
3099 u32 hwe_mask = Y2_HWE_ALL_MASK;
3100
3101 /* disable ASF */
3102 if (hw->chip_id == CHIP_ID_YUKON_EX
3103 || hw->chip_id == CHIP_ID_YUKON_SUPR) {
3104 sky2_write32(hw, CPU_WDOG, 0);
3105 status = sky2_read16(hw, HCU_CCSR);
3106 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
3107 HCU_CCSR_UC_STATE_MSK);
3108 /*
3109 * CPU clock divider shouldn't be used because
3110 * - ASF firmware may malfunction
3111 * - Yukon-Supreme: Parallel FLASH doesn't support divided clocks
3112 */
3113 status &= ~HCU_CCSR_CPU_CLK_DIVIDE_MSK;
3114 sky2_write16(hw, HCU_CCSR, status);
3115 sky2_write32(hw, CPU_WDOG, 0);
3116 } else
3117 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
3118 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
3119
3120 /* do a SW reset */
3121 sky2_write8(hw, B0_CTST, CS_RST_SET);
3122 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3123
3124 /* allow writes to PCI config */
3125 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3126
3127 /* clear PCI errors, if any */
3128 status = sky2_pci_read16(hw, PCI_STATUS);
3129 status |= PCI_STATUS_ERROR_BITS;
3130 sky2_pci_write16(hw, PCI_STATUS, status);
3131
3132 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
3133
3134 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3135 if (cap) {
3136 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
3137 0xfffffffful);
3138
3139 /* If error bit is stuck on ignore it */
3140 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
3141 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
3142 else
3143 hwe_mask |= Y2_IS_PCI_EXP;
3144 }
3145
3146 sky2_power_on(hw);
3147 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3148
3149 for (i = 0; i < hw->ports; i++) {
3150 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
3151 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
3152
3153 if (hw->chip_id == CHIP_ID_YUKON_EX ||
3154 hw->chip_id == CHIP_ID_YUKON_SUPR)
3155 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
3156 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
3157 | GMC_BYP_RETR_ON);
3158
3159 }
3160
3161 if (hw->chip_id == CHIP_ID_YUKON_SUPR && hw->chip_rev > CHIP_REV_YU_SU_B0) {
3162 /* enable MACSec clock gating */
3163 sky2_pci_write32(hw, PCI_DEV_REG3, P_CLK_MACSEC_DIS);
3164 }
3165
3166 if (hw->chip_id == CHIP_ID_YUKON_OPT) {
3167 u16 reg;
3168 u32 msk;
3169
3170 if (hw->chip_rev == 0) {
3171 /* disable PCI-E PHY power down (set PHY reg 0x80, bit 7 */
3172 sky2_write32(hw, Y2_PEX_PHY_DATA, (0x80UL << 16) | (1 << 7));
3173
3174 /* set PHY Link Detect Timer to 1.1 second (11x 100ms) */
3175 reg = 10;
3176 } else {
3177 /* set PHY Link Detect Timer to 0.4 second (4x 100ms) */
3178 reg = 3;
3179 }
3180
3181 reg <<= PSM_CONFIG_REG4_TIMER_PHY_LINK_DETECT_BASE;
3182
3183 /* reset PHY Link Detect */
3184 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3185 sky2_pci_write16(hw, PSM_CONFIG_REG4,
3186 reg | PSM_CONFIG_REG4_RST_PHY_LINK_DETECT);
3187 sky2_pci_write16(hw, PSM_CONFIG_REG4, reg);
3188
3189
3190 /* enable PHY Quick Link */
3191 msk = sky2_read32(hw, B0_IMSK);
3192 msk |= Y2_IS_PHY_QLNK;
3193 sky2_write32(hw, B0_IMSK, msk);
3194
3195 /* check if PSMv2 was running before */
3196 reg = sky2_pci_read16(hw, PSM_CONFIG_REG3);
3197 if (reg & PCI_EXP_LNKCTL_ASPMC) {
3198 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3199 /* restore the PCIe Link Control register */
3200 sky2_pci_write16(hw, cap + PCI_EXP_LNKCTL, reg);
3201 }
3202 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3203
3204 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3205 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3206 }
3207
3208 /* Clear I2C IRQ noise */
3209 sky2_write32(hw, B2_I2C_IRQ, 1);
3210
3211 /* turn off hardware timer (unused) */
3212 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
3213 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
3214
3215 /* Turn off descriptor polling */
3216 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
3217
3218 /* Turn off receive timestamp */
3219 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
3220 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
3221
3222 /* enable the Tx Arbiters */
3223 for (i = 0; i < hw->ports; i++)
3224 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3225
3226 /* Initialize ram interface */
3227 for (i = 0; i < hw->ports; i++) {
3228 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
3229
3230 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
3231 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
3232 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
3233 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
3234 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
3235 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
3236 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
3237 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
3238 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
3239 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
3240 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
3241 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
3242 }
3243
3244 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
3245
3246 for (i = 0; i < hw->ports; i++)
3247 sky2_gmac_reset(hw, i);
3248
3249 memset(hw->st_le, 0, hw->st_size * sizeof(struct sky2_status_le));
3250 hw->st_idx = 0;
3251
3252 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
3253 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
3254
3255 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
3256 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
3257
3258 /* Set the list last index */
3259 sky2_write16(hw, STAT_LAST_IDX, hw->st_size - 1);
3260
3261 sky2_write16(hw, STAT_TX_IDX_TH, 10);
3262 sky2_write8(hw, STAT_FIFO_WM, 16);
3263
3264 /* set Status-FIFO ISR watermark */
3265 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
3266 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
3267 else
3268 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
3269
3270 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
3271 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
3272 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
3273
3274 /* enable status unit */
3275 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
3276
3277 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3278 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3279 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3280 }
3281
3282 /* Take device down (offline).
3283 * Equivalent to doing dev_stop() but this does not
3284 * inform upper layers of the transistion.
3285 */
3286 static void sky2_detach(struct net_device *dev)
3287 {
3288 if (netif_running(dev)) {
3289 netif_tx_lock(dev);
3290 netif_device_detach(dev); /* stop txq */
3291 netif_tx_unlock(dev);
3292 sky2_down(dev);
3293 }
3294 }
3295
3296 /* Bring device back after doing sky2_detach */
3297 static int sky2_reattach(struct net_device *dev)
3298 {
3299 int err = 0;
3300
3301 if (netif_running(dev)) {
3302 err = sky2_up(dev);
3303 if (err) {
3304 netdev_info(dev, "could not restart %d\n", err);
3305 dev_close(dev);
3306 } else {
3307 netif_device_attach(dev);
3308 sky2_set_multicast(dev);
3309 }
3310 }
3311
3312 return err;
3313 }
3314
3315 static void sky2_all_down(struct sky2_hw *hw)
3316 {
3317 int i;
3318
3319 sky2_read32(hw, B0_IMSK);
3320 sky2_write32(hw, B0_IMSK, 0);
3321 synchronize_irq(hw->pdev->irq);
3322 napi_disable(&hw->napi);
3323
3324 for (i = 0; i < hw->ports; i++) {
3325 struct net_device *dev = hw->dev[i];
3326 struct sky2_port *sky2 = netdev_priv(dev);
3327
3328 if (!netif_running(dev))
3329 continue;
3330
3331 netif_carrier_off(dev);
3332 netif_tx_disable(dev);
3333 sky2_hw_down(sky2);
3334 }
3335 }
3336
3337 static void sky2_all_up(struct sky2_hw *hw)
3338 {
3339 u32 imask = Y2_IS_BASE;
3340 int i;
3341
3342 for (i = 0; i < hw->ports; i++) {
3343 struct net_device *dev = hw->dev[i];
3344 struct sky2_port *sky2 = netdev_priv(dev);
3345
3346 if (!netif_running(dev))
3347 continue;
3348
3349 sky2_hw_up(sky2);
3350 sky2_set_multicast(dev);
3351 imask |= portirq_msk[i];
3352 netif_wake_queue(dev);
3353 }
3354
3355 sky2_write32(hw, B0_IMSK, imask);
3356 sky2_read32(hw, B0_IMSK);
3357
3358 sky2_read32(hw, B0_Y2_SP_LISR);
3359 napi_enable(&hw->napi);
3360 }
3361
3362 static void sky2_restart(struct work_struct *work)
3363 {
3364 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
3365
3366 rtnl_lock();
3367
3368 sky2_all_down(hw);
3369 sky2_reset(hw);
3370 sky2_all_up(hw);
3371
3372 rtnl_unlock();
3373 }
3374
3375 static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
3376 {
3377 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
3378 }
3379
3380 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3381 {
3382 const struct sky2_port *sky2 = netdev_priv(dev);
3383
3384 wol->supported = sky2_wol_supported(sky2->hw);
3385 wol->wolopts = sky2->wol;
3386 }
3387
3388 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3389 {
3390 struct sky2_port *sky2 = netdev_priv(dev);
3391 struct sky2_hw *hw = sky2->hw;
3392
3393 if ((wol->wolopts & ~sky2_wol_supported(sky2->hw)) ||
3394 !device_can_wakeup(&hw->pdev->dev))
3395 return -EOPNOTSUPP;
3396
3397 sky2->wol = wol->wolopts;
3398 return 0;
3399 }
3400
3401 static u32 sky2_supported_modes(const struct sky2_hw *hw)
3402 {
3403 if (sky2_is_copper(hw)) {
3404 u32 modes = SUPPORTED_10baseT_Half
3405 | SUPPORTED_10baseT_Full
3406 | SUPPORTED_100baseT_Half
3407 | SUPPORTED_100baseT_Full
3408 | SUPPORTED_Autoneg | SUPPORTED_TP;
3409
3410 if (hw->flags & SKY2_HW_GIGABIT)
3411 modes |= SUPPORTED_1000baseT_Half
3412 | SUPPORTED_1000baseT_Full;
3413 return modes;
3414 } else
3415 return SUPPORTED_1000baseT_Half
3416 | SUPPORTED_1000baseT_Full
3417 | SUPPORTED_Autoneg
3418 | SUPPORTED_FIBRE;
3419 }
3420
3421 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3422 {
3423 struct sky2_port *sky2 = netdev_priv(dev);
3424 struct sky2_hw *hw = sky2->hw;
3425
3426 ecmd->transceiver = XCVR_INTERNAL;
3427 ecmd->supported = sky2_supported_modes(hw);
3428 ecmd->phy_address = PHY_ADDR_MARV;
3429 if (sky2_is_copper(hw)) {
3430 ecmd->port = PORT_TP;
3431 ecmd->speed = sky2->speed;
3432 } else {
3433 ecmd->speed = SPEED_1000;
3434 ecmd->port = PORT_FIBRE;
3435 }
3436
3437 ecmd->advertising = sky2->advertising;
3438 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_SPEED)
3439 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3440 ecmd->duplex = sky2->duplex;
3441 return 0;
3442 }
3443
3444 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3445 {
3446 struct sky2_port *sky2 = netdev_priv(dev);
3447 const struct sky2_hw *hw = sky2->hw;
3448 u32 supported = sky2_supported_modes(hw);
3449
3450 if (ecmd->autoneg == AUTONEG_ENABLE) {
3451 sky2->flags |= SKY2_FLAG_AUTO_SPEED;
3452 ecmd->advertising = supported;
3453 sky2->duplex = -1;
3454 sky2->speed = -1;
3455 } else {
3456 u32 setting;
3457
3458 switch (ecmd->speed) {
3459 case SPEED_1000:
3460 if (ecmd->duplex == DUPLEX_FULL)
3461 setting = SUPPORTED_1000baseT_Full;
3462 else if (ecmd->duplex == DUPLEX_HALF)
3463 setting = SUPPORTED_1000baseT_Half;
3464 else
3465 return -EINVAL;
3466 break;
3467 case SPEED_100:
3468 if (ecmd->duplex == DUPLEX_FULL)
3469 setting = SUPPORTED_100baseT_Full;
3470 else if (ecmd->duplex == DUPLEX_HALF)
3471 setting = SUPPORTED_100baseT_Half;
3472 else
3473 return -EINVAL;
3474 break;
3475
3476 case SPEED_10:
3477 if (ecmd->duplex == DUPLEX_FULL)
3478 setting = SUPPORTED_10baseT_Full;
3479 else if (ecmd->duplex == DUPLEX_HALF)
3480 setting = SUPPORTED_10baseT_Half;
3481 else
3482 return -EINVAL;
3483 break;
3484 default:
3485 return -EINVAL;
3486 }
3487
3488 if ((setting & supported) == 0)
3489 return -EINVAL;
3490
3491 sky2->speed = ecmd->speed;
3492 sky2->duplex = ecmd->duplex;
3493 sky2->flags &= ~SKY2_FLAG_AUTO_SPEED;
3494 }
3495
3496 sky2->advertising = ecmd->advertising;
3497
3498 if (netif_running(dev)) {
3499 sky2_phy_reinit(sky2);
3500 sky2_set_multicast(dev);
3501 }
3502
3503 return 0;
3504 }
3505
3506 static void sky2_get_drvinfo(struct net_device *dev,
3507 struct ethtool_drvinfo *info)
3508 {
3509 struct sky2_port *sky2 = netdev_priv(dev);
3510
3511 strcpy(info->driver, DRV_NAME);
3512 strcpy(info->version, DRV_VERSION);
3513 strcpy(info->fw_version, "N/A");
3514 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
3515 }
3516
3517 static const struct sky2_stat {
3518 char name[ETH_GSTRING_LEN];
3519 u16 offset;
3520 } sky2_stats[] = {
3521 { "tx_bytes", GM_TXO_OK_HI },
3522 { "rx_bytes", GM_RXO_OK_HI },
3523 { "tx_broadcast", GM_TXF_BC_OK },
3524 { "rx_broadcast", GM_RXF_BC_OK },
3525 { "tx_multicast", GM_TXF_MC_OK },
3526 { "rx_multicast", GM_RXF_MC_OK },
3527 { "tx_unicast", GM_TXF_UC_OK },
3528 { "rx_unicast", GM_RXF_UC_OK },
3529 { "tx_mac_pause", GM_TXF_MPAUSE },
3530 { "rx_mac_pause", GM_RXF_MPAUSE },
3531 { "collisions", GM_TXF_COL },
3532 { "late_collision",GM_TXF_LAT_COL },
3533 { "aborted", GM_TXF_ABO_COL },
3534 { "single_collisions", GM_TXF_SNG_COL },
3535 { "multi_collisions", GM_TXF_MUL_COL },
3536
3537 { "rx_short", GM_RXF_SHT },
3538 { "rx_runt", GM_RXE_FRAG },
3539 { "rx_64_byte_packets", GM_RXF_64B },
3540 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3541 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3542 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3543 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3544 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3545 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3546 { "rx_too_long", GM_RXF_LNG_ERR },
3547 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3548 { "rx_jabber", GM_RXF_JAB_PKT },
3549 { "rx_fcs_error", GM_RXF_FCS_ERR },
3550
3551 { "tx_64_byte_packets", GM_TXF_64B },
3552 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3553 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3554 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3555 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3556 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3557 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3558 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3559 };
3560
3561 static u32 sky2_get_rx_csum(struct net_device *dev)
3562 {
3563 struct sky2_port *sky2 = netdev_priv(dev);
3564
3565 return !!(sky2->flags & SKY2_FLAG_RX_CHECKSUM);
3566 }
3567
3568 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
3569 {
3570 struct sky2_port *sky2 = netdev_priv(dev);
3571
3572 if (data)
3573 sky2->flags |= SKY2_FLAG_RX_CHECKSUM;
3574 else
3575 sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM;
3576
3577 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
3578 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
3579
3580 return 0;
3581 }
3582
3583 static u32 sky2_get_msglevel(struct net_device *netdev)
3584 {
3585 struct sky2_port *sky2 = netdev_priv(netdev);
3586 return sky2->msg_enable;
3587 }
3588
3589 static int sky2_nway_reset(struct net_device *dev)
3590 {
3591 struct sky2_port *sky2 = netdev_priv(dev);
3592
3593 if (!netif_running(dev) || !(sky2->flags & SKY2_FLAG_AUTO_SPEED))
3594 return -EINVAL;
3595
3596 sky2_phy_reinit(sky2);
3597 sky2_set_multicast(dev);
3598
3599 return 0;
3600 }
3601
3602 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3603 {
3604 struct sky2_hw *hw = sky2->hw;
3605 unsigned port = sky2->port;
3606 int i;
3607
3608 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
3609 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
3610 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
3611 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
3612
3613 for (i = 2; i < count; i++)
3614 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
3615 }
3616
3617 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3618 {
3619 struct sky2_port *sky2 = netdev_priv(netdev);
3620 sky2->msg_enable = value;
3621 }
3622
3623 static int sky2_get_sset_count(struct net_device *dev, int sset)
3624 {
3625 switch (sset) {
3626 case ETH_SS_STATS:
3627 return ARRAY_SIZE(sky2_stats);
3628 default:
3629 return -EOPNOTSUPP;
3630 }
3631 }
3632
3633 static void sky2_get_ethtool_stats(struct net_device *dev,
3634 struct ethtool_stats *stats, u64 * data)
3635 {
3636 struct sky2_port *sky2 = netdev_priv(dev);
3637
3638 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3639 }
3640
3641 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3642 {
3643 int i;
3644
3645 switch (stringset) {
3646 case ETH_SS_STATS:
3647 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3648 memcpy(data + i * ETH_GSTRING_LEN,
3649 sky2_stats[i].name, ETH_GSTRING_LEN);
3650 break;
3651 }
3652 }
3653
3654 static int sky2_set_mac_address(struct net_device *dev, void *p)
3655 {
3656 struct sky2_port *sky2 = netdev_priv(dev);
3657 struct sky2_hw *hw = sky2->hw;
3658 unsigned port = sky2->port;
3659 const struct sockaddr *addr = p;
3660
3661 if (!is_valid_ether_addr(addr->sa_data))
3662 return -EADDRNOTAVAIL;
3663
3664 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3665 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3666 dev->dev_addr, ETH_ALEN);
3667 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3668 dev->dev_addr, ETH_ALEN);
3669
3670 /* virtual address for data */
3671 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3672
3673 /* physical address: used for pause frames */
3674 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3675
3676 return 0;
3677 }
3678
3679 static void inline sky2_add_filter(u8 filter[8], const u8 *addr)
3680 {
3681 u32 bit;
3682
3683 bit = ether_crc(ETH_ALEN, addr) & 63;
3684 filter[bit >> 3] |= 1 << (bit & 7);
3685 }
3686
3687 static void sky2_set_multicast(struct net_device *dev)
3688 {
3689 struct sky2_port *sky2 = netdev_priv(dev);
3690 struct sky2_hw *hw = sky2->hw;
3691 unsigned port = sky2->port;
3692 struct netdev_hw_addr *ha;
3693 u16 reg;
3694 u8 filter[8];
3695 int rx_pause;
3696 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3697
3698 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3699 memset(filter, 0, sizeof(filter));
3700
3701 reg = gma_read16(hw, port, GM_RX_CTRL);
3702 reg |= GM_RXCR_UCF_ENA;
3703
3704 if (dev->flags & IFF_PROMISC) /* promiscuous */
3705 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3706 else if (dev->flags & IFF_ALLMULTI)
3707 memset(filter, 0xff, sizeof(filter));
3708 else if (netdev_mc_empty(dev) && !rx_pause)
3709 reg &= ~GM_RXCR_MCF_ENA;
3710 else {
3711 reg |= GM_RXCR_MCF_ENA;
3712
3713 if (rx_pause)
3714 sky2_add_filter(filter, pause_mc_addr);
3715
3716 netdev_for_each_mc_addr(ha, dev)
3717 sky2_add_filter(filter, ha->addr);
3718 }
3719
3720 gma_write16(hw, port, GM_MC_ADDR_H1,
3721 (u16) filter[0] | ((u16) filter[1] << 8));
3722 gma_write16(hw, port, GM_MC_ADDR_H2,
3723 (u16) filter[2] | ((u16) filter[3] << 8));
3724 gma_write16(hw, port, GM_MC_ADDR_H3,
3725 (u16) filter[4] | ((u16) filter[5] << 8));
3726 gma_write16(hw, port, GM_MC_ADDR_H4,
3727 (u16) filter[6] | ((u16) filter[7] << 8));
3728
3729 gma_write16(hw, port, GM_RX_CTRL, reg);
3730 }
3731
3732 /* Can have one global because blinking is controlled by
3733 * ethtool and that is always under RTNL mutex
3734 */
3735 static void sky2_led(struct sky2_port *sky2, enum led_mode mode)
3736 {
3737 struct sky2_hw *hw = sky2->hw;
3738 unsigned port = sky2->port;
3739
3740 spin_lock_bh(&sky2->phy_lock);
3741 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3742 hw->chip_id == CHIP_ID_YUKON_EX ||
3743 hw->chip_id == CHIP_ID_YUKON_SUPR) {
3744 u16 pg;
3745 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3746 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3747
3748 switch (mode) {
3749 case MO_LED_OFF:
3750 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3751 PHY_M_LEDC_LOS_CTRL(8) |
3752 PHY_M_LEDC_INIT_CTRL(8) |
3753 PHY_M_LEDC_STA1_CTRL(8) |
3754 PHY_M_LEDC_STA0_CTRL(8));
3755 break;
3756 case MO_LED_ON:
3757 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3758 PHY_M_LEDC_LOS_CTRL(9) |
3759 PHY_M_LEDC_INIT_CTRL(9) |
3760 PHY_M_LEDC_STA1_CTRL(9) |
3761 PHY_M_LEDC_STA0_CTRL(9));
3762 break;
3763 case MO_LED_BLINK:
3764 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3765 PHY_M_LEDC_LOS_CTRL(0xa) |
3766 PHY_M_LEDC_INIT_CTRL(0xa) |
3767 PHY_M_LEDC_STA1_CTRL(0xa) |
3768 PHY_M_LEDC_STA0_CTRL(0xa));
3769 break;
3770 case MO_LED_NORM:
3771 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3772 PHY_M_LEDC_LOS_CTRL(1) |
3773 PHY_M_LEDC_INIT_CTRL(8) |
3774 PHY_M_LEDC_STA1_CTRL(7) |
3775 PHY_M_LEDC_STA0_CTRL(7));
3776 }
3777
3778 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3779 } else
3780 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3781 PHY_M_LED_MO_DUP(mode) |
3782 PHY_M_LED_MO_10(mode) |
3783 PHY_M_LED_MO_100(mode) |
3784 PHY_M_LED_MO_1000(mode) |
3785 PHY_M_LED_MO_RX(mode) |
3786 PHY_M_LED_MO_TX(mode));
3787
3788 spin_unlock_bh(&sky2->phy_lock);
3789 }
3790
3791 /* blink LED's for finding board */
3792 static int sky2_phys_id(struct net_device *dev, u32 data)
3793 {
3794 struct sky2_port *sky2 = netdev_priv(dev);
3795 unsigned int i;
3796
3797 if (data == 0)
3798 data = UINT_MAX;
3799
3800 for (i = 0; i < data; i++) {
3801 sky2_led(sky2, MO_LED_ON);
3802 if (msleep_interruptible(500))
3803 break;
3804 sky2_led(sky2, MO_LED_OFF);
3805 if (msleep_interruptible(500))
3806 break;
3807 }
3808 sky2_led(sky2, MO_LED_NORM);
3809
3810 return 0;
3811 }
3812
3813 static void sky2_get_pauseparam(struct net_device *dev,
3814 struct ethtool_pauseparam *ecmd)
3815 {
3816 struct sky2_port *sky2 = netdev_priv(dev);
3817
3818 switch (sky2->flow_mode) {
3819 case FC_NONE:
3820 ecmd->tx_pause = ecmd->rx_pause = 0;
3821 break;
3822 case FC_TX:
3823 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
3824 break;
3825 case FC_RX:
3826 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
3827 break;
3828 case FC_BOTH:
3829 ecmd->tx_pause = ecmd->rx_pause = 1;
3830 }
3831
3832 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_PAUSE)
3833 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3834 }
3835
3836 static int sky2_set_pauseparam(struct net_device *dev,
3837 struct ethtool_pauseparam *ecmd)
3838 {
3839 struct sky2_port *sky2 = netdev_priv(dev);
3840
3841 if (ecmd->autoneg == AUTONEG_ENABLE)
3842 sky2->flags |= SKY2_FLAG_AUTO_PAUSE;
3843 else
3844 sky2->flags &= ~SKY2_FLAG_AUTO_PAUSE;
3845
3846 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
3847
3848 if (netif_running(dev))
3849 sky2_phy_reinit(sky2);
3850
3851 return 0;
3852 }
3853
3854 static int sky2_get_coalesce(struct net_device *dev,
3855 struct ethtool_coalesce *ecmd)
3856 {
3857 struct sky2_port *sky2 = netdev_priv(dev);
3858 struct sky2_hw *hw = sky2->hw;
3859
3860 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
3861 ecmd->tx_coalesce_usecs = 0;
3862 else {
3863 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
3864 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
3865 }
3866 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
3867
3868 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
3869 ecmd->rx_coalesce_usecs = 0;
3870 else {
3871 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
3872 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
3873 }
3874 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
3875
3876 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
3877 ecmd->rx_coalesce_usecs_irq = 0;
3878 else {
3879 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
3880 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
3881 }
3882
3883 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
3884
3885 return 0;
3886 }
3887
3888 /* Note: this affect both ports */
3889 static int sky2_set_coalesce(struct net_device *dev,
3890 struct ethtool_coalesce *ecmd)
3891 {
3892 struct sky2_port *sky2 = netdev_priv(dev);
3893 struct sky2_hw *hw = sky2->hw;
3894 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
3895
3896 if (ecmd->tx_coalesce_usecs > tmax ||
3897 ecmd->rx_coalesce_usecs > tmax ||
3898 ecmd->rx_coalesce_usecs_irq > tmax)
3899 return -EINVAL;
3900
3901 if (ecmd->tx_max_coalesced_frames >= sky2->tx_ring_size-1)
3902 return -EINVAL;
3903 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
3904 return -EINVAL;
3905 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
3906 return -EINVAL;
3907
3908 if (ecmd->tx_coalesce_usecs == 0)
3909 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
3910 else {
3911 sky2_write32(hw, STAT_TX_TIMER_INI,
3912 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
3913 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3914 }
3915 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
3916
3917 if (ecmd->rx_coalesce_usecs == 0)
3918 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
3919 else {
3920 sky2_write32(hw, STAT_LEV_TIMER_INI,
3921 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
3922 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3923 }
3924 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
3925
3926 if (ecmd->rx_coalesce_usecs_irq == 0)
3927 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
3928 else {
3929 sky2_write32(hw, STAT_ISR_TIMER_INI,
3930 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
3931 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3932 }
3933 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
3934 return 0;
3935 }
3936
3937 static void sky2_get_ringparam(struct net_device *dev,
3938 struct ethtool_ringparam *ering)
3939 {
3940 struct sky2_port *sky2 = netdev_priv(dev);
3941
3942 ering->rx_max_pending = RX_MAX_PENDING;
3943 ering->rx_mini_max_pending = 0;
3944 ering->rx_jumbo_max_pending = 0;
3945 ering->tx_max_pending = TX_MAX_PENDING;
3946
3947 ering->rx_pending = sky2->rx_pending;
3948 ering->rx_mini_pending = 0;
3949 ering->rx_jumbo_pending = 0;
3950 ering->tx_pending = sky2->tx_pending;
3951 }
3952
3953 static int sky2_set_ringparam(struct net_device *dev,
3954 struct ethtool_ringparam *ering)
3955 {
3956 struct sky2_port *sky2 = netdev_priv(dev);
3957
3958 if (ering->rx_pending > RX_MAX_PENDING ||
3959 ering->rx_pending < 8 ||
3960 ering->tx_pending < TX_MIN_PENDING ||
3961 ering->tx_pending > TX_MAX_PENDING)
3962 return -EINVAL;
3963
3964 sky2_detach(dev);
3965
3966 sky2->rx_pending = ering->rx_pending;
3967 sky2->tx_pending = ering->tx_pending;
3968 sky2->tx_ring_size = roundup_pow_of_two(sky2->tx_pending+1);
3969
3970 return sky2_reattach(dev);
3971 }
3972
3973 static int sky2_get_regs_len(struct net_device *dev)
3974 {
3975 return 0x4000;
3976 }
3977
3978 static int sky2_reg_access_ok(struct sky2_hw *hw, unsigned int b)
3979 {
3980 /* This complicated switch statement is to make sure and
3981 * only access regions that are unreserved.
3982 * Some blocks are only valid on dual port cards.
3983 */
3984 switch (b) {
3985 /* second port */
3986 case 5: /* Tx Arbiter 2 */
3987 case 9: /* RX2 */
3988 case 14 ... 15: /* TX2 */
3989 case 17: case 19: /* Ram Buffer 2 */
3990 case 22 ... 23: /* Tx Ram Buffer 2 */
3991 case 25: /* Rx MAC Fifo 1 */
3992 case 27: /* Tx MAC Fifo 2 */
3993 case 31: /* GPHY 2 */
3994 case 40 ... 47: /* Pattern Ram 2 */
3995 case 52: case 54: /* TCP Segmentation 2 */
3996 case 112 ... 116: /* GMAC 2 */
3997 return hw->ports > 1;
3998
3999 case 0: /* Control */
4000 case 2: /* Mac address */
4001 case 4: /* Tx Arbiter 1 */
4002 case 7: /* PCI express reg */
4003 case 8: /* RX1 */
4004 case 12 ... 13: /* TX1 */
4005 case 16: case 18:/* Rx Ram Buffer 1 */
4006 case 20 ... 21: /* Tx Ram Buffer 1 */
4007 case 24: /* Rx MAC Fifo 1 */
4008 case 26: /* Tx MAC Fifo 1 */
4009 case 28 ... 29: /* Descriptor and status unit */
4010 case 30: /* GPHY 1*/
4011 case 32 ... 39: /* Pattern Ram 1 */
4012 case 48: case 50: /* TCP Segmentation 1 */
4013 case 56 ... 60: /* PCI space */
4014 case 80 ... 84: /* GMAC 1 */
4015 return 1;
4016
4017 default:
4018 return 0;
4019 }
4020 }
4021
4022 /*
4023 * Returns copy of control register region
4024 * Note: ethtool_get_regs always provides full size (16k) buffer
4025 */
4026 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
4027 void *p)
4028 {
4029 const struct sky2_port *sky2 = netdev_priv(dev);
4030 const void __iomem *io = sky2->hw->regs;
4031 unsigned int b;
4032
4033 regs->version = 1;
4034
4035 for (b = 0; b < 128; b++) {
4036 /* skip poisonous diagnostic ram region in block 3 */
4037 if (b == 3)
4038 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
4039 else if (sky2_reg_access_ok(sky2->hw, b))
4040 memcpy_fromio(p, io, 128);
4041 else
4042 memset(p, 0, 128);
4043
4044 p += 128;
4045 io += 128;
4046 }
4047 }
4048
4049 /* In order to do Jumbo packets on these chips, need to turn off the
4050 * transmit store/forward. Therefore checksum offload won't work.
4051 */
4052 static int no_tx_offload(struct net_device *dev)
4053 {
4054 const struct sky2_port *sky2 = netdev_priv(dev);
4055 const struct sky2_hw *hw = sky2->hw;
4056
4057 return dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U;
4058 }
4059
4060 static int sky2_set_tx_csum(struct net_device *dev, u32 data)
4061 {
4062 if (data && no_tx_offload(dev))
4063 return -EINVAL;
4064
4065 return ethtool_op_set_tx_csum(dev, data);
4066 }
4067
4068
4069 static int sky2_set_tso(struct net_device *dev, u32 data)
4070 {
4071 if (data && no_tx_offload(dev))
4072 return -EINVAL;
4073
4074 return ethtool_op_set_tso(dev, data);
4075 }
4076
4077 static int sky2_get_eeprom_len(struct net_device *dev)
4078 {
4079 struct sky2_port *sky2 = netdev_priv(dev);
4080 struct sky2_hw *hw = sky2->hw;
4081 u16 reg2;
4082
4083 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4084 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4085 }
4086
4087 static int sky2_vpd_wait(const struct sky2_hw *hw, int cap, u16 busy)
4088 {
4089 unsigned long start = jiffies;
4090
4091 while ( (sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F) == busy) {
4092 /* Can take up to 10.6 ms for write */
4093 if (time_after(jiffies, start + HZ/4)) {
4094 dev_err(&hw->pdev->dev, "VPD cycle timed out\n");
4095 return -ETIMEDOUT;
4096 }
4097 mdelay(1);
4098 }
4099
4100 return 0;
4101 }
4102
4103 static int sky2_vpd_read(struct sky2_hw *hw, int cap, void *data,
4104 u16 offset, size_t length)
4105 {
4106 int rc = 0;
4107
4108 while (length > 0) {
4109 u32 val;
4110
4111 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
4112 rc = sky2_vpd_wait(hw, cap, 0);
4113 if (rc)
4114 break;
4115
4116 val = sky2_pci_read32(hw, cap + PCI_VPD_DATA);
4117
4118 memcpy(data, &val, min(sizeof(val), length));
4119 offset += sizeof(u32);
4120 data += sizeof(u32);
4121 length -= sizeof(u32);
4122 }
4123
4124 return rc;
4125 }
4126
4127 static int sky2_vpd_write(struct sky2_hw *hw, int cap, const void *data,
4128 u16 offset, unsigned int length)
4129 {
4130 unsigned int i;
4131 int rc = 0;
4132
4133 for (i = 0; i < length; i += sizeof(u32)) {
4134 u32 val = *(u32 *)(data + i);
4135
4136 sky2_pci_write32(hw, cap + PCI_VPD_DATA, val);
4137 sky2_pci_write32(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
4138
4139 rc = sky2_vpd_wait(hw, cap, PCI_VPD_ADDR_F);
4140 if (rc)
4141 break;
4142 }
4143 return rc;
4144 }
4145
4146 static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4147 u8 *data)
4148 {
4149 struct sky2_port *sky2 = netdev_priv(dev);
4150 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4151
4152 if (!cap)
4153 return -EINVAL;
4154
4155 eeprom->magic = SKY2_EEPROM_MAGIC;
4156
4157 return sky2_vpd_read(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4158 }
4159
4160 static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4161 u8 *data)
4162 {
4163 struct sky2_port *sky2 = netdev_priv(dev);
4164 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4165
4166 if (!cap)
4167 return -EINVAL;
4168
4169 if (eeprom->magic != SKY2_EEPROM_MAGIC)
4170 return -EINVAL;
4171
4172 /* Partial writes not supported */
4173 if ((eeprom->offset & 3) || (eeprom->len & 3))
4174 return -EINVAL;
4175
4176 return sky2_vpd_write(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4177 }
4178
4179 static int sky2_set_flags(struct net_device *dev, u32 data)
4180 {
4181 struct sky2_port *sky2 = netdev_priv(dev);
4182
4183 if (data & ~ETH_FLAG_RXHASH)
4184 return -EOPNOTSUPP;
4185
4186 if (data & ETH_FLAG_RXHASH) {
4187 if (sky2->hw->flags & SKY2_HW_RSS_BROKEN)
4188 return -EINVAL;
4189
4190 dev->features |= NETIF_F_RXHASH;
4191 } else
4192 dev->features &= ~NETIF_F_RXHASH;
4193
4194 rx_set_rss(dev);
4195
4196 return 0;
4197 }
4198
4199 static const struct ethtool_ops sky2_ethtool_ops = {
4200 .get_settings = sky2_get_settings,
4201 .set_settings = sky2_set_settings,
4202 .get_drvinfo = sky2_get_drvinfo,
4203 .get_wol = sky2_get_wol,
4204 .set_wol = sky2_set_wol,
4205 .get_msglevel = sky2_get_msglevel,
4206 .set_msglevel = sky2_set_msglevel,
4207 .nway_reset = sky2_nway_reset,
4208 .get_regs_len = sky2_get_regs_len,
4209 .get_regs = sky2_get_regs,
4210 .get_link = ethtool_op_get_link,
4211 .get_eeprom_len = sky2_get_eeprom_len,
4212 .get_eeprom = sky2_get_eeprom,
4213 .set_eeprom = sky2_set_eeprom,
4214 .set_sg = ethtool_op_set_sg,
4215 .set_tx_csum = sky2_set_tx_csum,
4216 .set_tso = sky2_set_tso,
4217 .get_rx_csum = sky2_get_rx_csum,
4218 .set_rx_csum = sky2_set_rx_csum,
4219 .get_strings = sky2_get_strings,
4220 .get_coalesce = sky2_get_coalesce,
4221 .set_coalesce = sky2_set_coalesce,
4222 .get_ringparam = sky2_get_ringparam,
4223 .set_ringparam = sky2_set_ringparam,
4224 .get_pauseparam = sky2_get_pauseparam,
4225 .set_pauseparam = sky2_set_pauseparam,
4226 .phys_id = sky2_phys_id,
4227 .get_sset_count = sky2_get_sset_count,
4228 .get_ethtool_stats = sky2_get_ethtool_stats,
4229 .set_flags = sky2_set_flags,
4230 };
4231
4232 #ifdef CONFIG_SKY2_DEBUG
4233
4234 static struct dentry *sky2_debug;
4235
4236
4237 /*
4238 * Read and parse the first part of Vital Product Data
4239 */
4240 #define VPD_SIZE 128
4241 #define VPD_MAGIC 0x82
4242
4243 static const struct vpd_tag {
4244 char tag[2];
4245 char *label;
4246 } vpd_tags[] = {
4247 { "PN", "Part Number" },
4248 { "EC", "Engineering Level" },
4249 { "MN", "Manufacturer" },
4250 { "SN", "Serial Number" },
4251 { "YA", "Asset Tag" },
4252 { "VL", "First Error Log Message" },
4253 { "VF", "Second Error Log Message" },
4254 { "VB", "Boot Agent ROM Configuration" },
4255 { "VE", "EFI UNDI Configuration" },
4256 };
4257
4258 static void sky2_show_vpd(struct seq_file *seq, struct sky2_hw *hw)
4259 {
4260 size_t vpd_size;
4261 loff_t offs;
4262 u8 len;
4263 unsigned char *buf;
4264 u16 reg2;
4265
4266 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4267 vpd_size = 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4268
4269 seq_printf(seq, "%s Product Data\n", pci_name(hw->pdev));
4270 buf = kmalloc(vpd_size, GFP_KERNEL);
4271 if (!buf) {
4272 seq_puts(seq, "no memory!\n");
4273 return;
4274 }
4275
4276 if (pci_read_vpd(hw->pdev, 0, vpd_size, buf) < 0) {
4277 seq_puts(seq, "VPD read failed\n");
4278 goto out;
4279 }
4280
4281 if (buf[0] != VPD_MAGIC) {
4282 seq_printf(seq, "VPD tag mismatch: %#x\n", buf[0]);
4283 goto out;
4284 }
4285 len = buf[1];
4286 if (len == 0 || len > vpd_size - 4) {
4287 seq_printf(seq, "Invalid id length: %d\n", len);
4288 goto out;
4289 }
4290
4291 seq_printf(seq, "%.*s\n", len, buf + 3);
4292 offs = len + 3;
4293
4294 while (offs < vpd_size - 4) {
4295 int i;
4296
4297 if (!memcmp("RW", buf + offs, 2)) /* end marker */
4298 break;
4299 len = buf[offs + 2];
4300 if (offs + len + 3 >= vpd_size)
4301 break;
4302
4303 for (i = 0; i < ARRAY_SIZE(vpd_tags); i++) {
4304 if (!memcmp(vpd_tags[i].tag, buf + offs, 2)) {
4305 seq_printf(seq, " %s: %.*s\n",
4306 vpd_tags[i].label, len, buf + offs + 3);
4307 break;
4308 }
4309 }
4310 offs += len + 3;
4311 }
4312 out:
4313 kfree(buf);
4314 }
4315
4316 static int sky2_debug_show(struct seq_file *seq, void *v)
4317 {
4318 struct net_device *dev = seq->private;
4319 const struct sky2_port *sky2 = netdev_priv(dev);
4320 struct sky2_hw *hw = sky2->hw;
4321 unsigned port = sky2->port;
4322 unsigned idx, last;
4323 int sop;
4324
4325 sky2_show_vpd(seq, hw);
4326
4327 seq_printf(seq, "\nIRQ src=%x mask=%x control=%x\n",
4328 sky2_read32(hw, B0_ISRC),
4329 sky2_read32(hw, B0_IMSK),
4330 sky2_read32(hw, B0_Y2_SP_ICR));
4331
4332 if (!netif_running(dev)) {
4333 seq_printf(seq, "network not running\n");
4334 return 0;
4335 }
4336
4337 napi_disable(&hw->napi);
4338 last = sky2_read16(hw, STAT_PUT_IDX);
4339
4340 seq_printf(seq, "Status ring %u\n", hw->st_size);
4341 if (hw->st_idx == last)
4342 seq_puts(seq, "Status ring (empty)\n");
4343 else {
4344 seq_puts(seq, "Status ring\n");
4345 for (idx = hw->st_idx; idx != last && idx < hw->st_size;
4346 idx = RING_NEXT(idx, hw->st_size)) {
4347 const struct sky2_status_le *le = hw->st_le + idx;
4348 seq_printf(seq, "[%d] %#x %d %#x\n",
4349 idx, le->opcode, le->length, le->status);
4350 }
4351 seq_puts(seq, "\n");
4352 }
4353
4354 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
4355 sky2->tx_cons, sky2->tx_prod,
4356 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
4357 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
4358
4359 /* Dump contents of tx ring */
4360 sop = 1;
4361 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < sky2->tx_ring_size;
4362 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
4363 const struct sky2_tx_le *le = sky2->tx_le + idx;
4364 u32 a = le32_to_cpu(le->addr);
4365
4366 if (sop)
4367 seq_printf(seq, "%u:", idx);
4368 sop = 0;
4369
4370 switch(le->opcode & ~HW_OWNER) {
4371 case OP_ADDR64:
4372 seq_printf(seq, " %#x:", a);
4373 break;
4374 case OP_LRGLEN:
4375 seq_printf(seq, " mtu=%d", a);
4376 break;
4377 case OP_VLAN:
4378 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
4379 break;
4380 case OP_TCPLISW:
4381 seq_printf(seq, " csum=%#x", a);
4382 break;
4383 case OP_LARGESEND:
4384 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
4385 break;
4386 case OP_PACKET:
4387 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
4388 break;
4389 case OP_BUFFER:
4390 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
4391 break;
4392 default:
4393 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
4394 a, le16_to_cpu(le->length));
4395 }
4396
4397 if (le->ctrl & EOP) {
4398 seq_putc(seq, '\n');
4399 sop = 1;
4400 }
4401 }
4402
4403 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
4404 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
4405 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
4406 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
4407
4408 sky2_read32(hw, B0_Y2_SP_LISR);
4409 napi_enable(&hw->napi);
4410 return 0;
4411 }
4412
4413 static int sky2_debug_open(struct inode *inode, struct file *file)
4414 {
4415 return single_open(file, sky2_debug_show, inode->i_private);
4416 }
4417
4418 static const struct file_operations sky2_debug_fops = {
4419 .owner = THIS_MODULE,
4420 .open = sky2_debug_open,
4421 .read = seq_read,
4422 .llseek = seq_lseek,
4423 .release = single_release,
4424 };
4425
4426 /*
4427 * Use network device events to create/remove/rename
4428 * debugfs file entries
4429 */
4430 static int sky2_device_event(struct notifier_block *unused,
4431 unsigned long event, void *ptr)
4432 {
4433 struct net_device *dev = ptr;
4434 struct sky2_port *sky2 = netdev_priv(dev);
4435
4436 if (dev->netdev_ops->ndo_open != sky2_up || !sky2_debug)
4437 return NOTIFY_DONE;
4438
4439 switch(event) {
4440 case NETDEV_CHANGENAME:
4441 if (sky2->debugfs) {
4442 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
4443 sky2_debug, dev->name);
4444 }
4445 break;
4446
4447 case NETDEV_GOING_DOWN:
4448 if (sky2->debugfs) {
4449 netdev_printk(KERN_DEBUG, dev, "remove debugfs\n");
4450 debugfs_remove(sky2->debugfs);
4451 sky2->debugfs = NULL;
4452 }
4453 break;
4454
4455 case NETDEV_UP:
4456 sky2->debugfs = debugfs_create_file(dev->name, S_IRUGO,
4457 sky2_debug, dev,
4458 &sky2_debug_fops);
4459 if (IS_ERR(sky2->debugfs))
4460 sky2->debugfs = NULL;
4461 }
4462
4463 return NOTIFY_DONE;
4464 }
4465
4466 static struct notifier_block sky2_notifier = {
4467 .notifier_call = sky2_device_event,
4468 };
4469
4470
4471 static __init void sky2_debug_init(void)
4472 {
4473 struct dentry *ent;
4474
4475 ent = debugfs_create_dir("sky2", NULL);
4476 if (!ent || IS_ERR(ent))
4477 return;
4478
4479 sky2_debug = ent;
4480 register_netdevice_notifier(&sky2_notifier);
4481 }
4482
4483 static __exit void sky2_debug_cleanup(void)
4484 {
4485 if (sky2_debug) {
4486 unregister_netdevice_notifier(&sky2_notifier);
4487 debugfs_remove(sky2_debug);
4488 sky2_debug = NULL;
4489 }
4490 }
4491
4492 #else
4493 #define sky2_debug_init()
4494 #define sky2_debug_cleanup()
4495 #endif
4496
4497 /* Two copies of network device operations to handle special case of
4498 not allowing netpoll on second port */
4499 static const struct net_device_ops sky2_netdev_ops[2] = {
4500 {
4501 .ndo_open = sky2_up,
4502 .ndo_stop = sky2_down,
4503 .ndo_start_xmit = sky2_xmit_frame,
4504 .ndo_do_ioctl = sky2_ioctl,
4505 .ndo_validate_addr = eth_validate_addr,
4506 .ndo_set_mac_address = sky2_set_mac_address,
4507 .ndo_set_multicast_list = sky2_set_multicast,
4508 .ndo_change_mtu = sky2_change_mtu,
4509 .ndo_tx_timeout = sky2_tx_timeout,
4510 #ifdef SKY2_VLAN_TAG_USED
4511 .ndo_vlan_rx_register = sky2_vlan_rx_register,
4512 #endif
4513 #ifdef CONFIG_NET_POLL_CONTROLLER
4514 .ndo_poll_controller = sky2_netpoll,
4515 #endif
4516 },
4517 {
4518 .ndo_open = sky2_up,
4519 .ndo_stop = sky2_down,
4520 .ndo_start_xmit = sky2_xmit_frame,
4521 .ndo_do_ioctl = sky2_ioctl,
4522 .ndo_validate_addr = eth_validate_addr,
4523 .ndo_set_mac_address = sky2_set_mac_address,
4524 .ndo_set_multicast_list = sky2_set_multicast,
4525 .ndo_change_mtu = sky2_change_mtu,
4526 .ndo_tx_timeout = sky2_tx_timeout,
4527 #ifdef SKY2_VLAN_TAG_USED
4528 .ndo_vlan_rx_register = sky2_vlan_rx_register,
4529 #endif
4530 },
4531 };
4532
4533 /* Initialize network device */
4534 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
4535 unsigned port,
4536 int highmem, int wol)
4537 {
4538 struct sky2_port *sky2;
4539 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
4540
4541 if (!dev) {
4542 dev_err(&hw->pdev->dev, "etherdev alloc failed\n");
4543 return NULL;
4544 }
4545
4546 SET_NETDEV_DEV(dev, &hw->pdev->dev);
4547 dev->irq = hw->pdev->irq;
4548 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
4549 dev->watchdog_timeo = TX_WATCHDOG;
4550 dev->netdev_ops = &sky2_netdev_ops[port];
4551
4552 sky2 = netdev_priv(dev);
4553 sky2->netdev = dev;
4554 sky2->hw = hw;
4555 sky2->msg_enable = netif_msg_init(debug, default_msg);
4556
4557 /* Auto speed and flow control */
4558 sky2->flags = SKY2_FLAG_AUTO_SPEED | SKY2_FLAG_AUTO_PAUSE;
4559 if (hw->chip_id != CHIP_ID_YUKON_XL)
4560 sky2->flags |= SKY2_FLAG_RX_CHECKSUM;
4561
4562 sky2->flow_mode = FC_BOTH;
4563
4564 sky2->duplex = -1;
4565 sky2->speed = -1;
4566 sky2->advertising = sky2_supported_modes(hw);
4567 sky2->wol = wol;
4568
4569 spin_lock_init(&sky2->phy_lock);
4570
4571 sky2->tx_pending = TX_DEF_PENDING;
4572 sky2->tx_ring_size = roundup_pow_of_two(TX_DEF_PENDING+1);
4573 sky2->rx_pending = RX_DEF_PENDING;
4574
4575 hw->dev[port] = dev;
4576
4577 sky2->port = port;
4578
4579 dev->features |= NETIF_F_TSO | NETIF_F_IP_CSUM | NETIF_F_SG;
4580 if (highmem)
4581 dev->features |= NETIF_F_HIGHDMA;
4582
4583 /* Enable receive hashing unless hardware is known broken */
4584 if (!(hw->flags & SKY2_HW_RSS_BROKEN))
4585 dev->features |= NETIF_F_RXHASH;
4586
4587 #ifdef SKY2_VLAN_TAG_USED
4588 /* The workaround for FE+ status conflicts with VLAN tag detection. */
4589 if (!(sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
4590 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0)) {
4591 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
4592 }
4593 #endif
4594
4595 /* read the mac address */
4596 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
4597 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
4598
4599 return dev;
4600 }
4601
4602 static void __devinit sky2_show_addr(struct net_device *dev)
4603 {
4604 const struct sky2_port *sky2 = netdev_priv(dev);
4605
4606 netif_info(sky2, probe, dev, "addr %pM\n", dev->dev_addr);
4607 }
4608
4609 /* Handle software interrupt used during MSI test */
4610 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
4611 {
4612 struct sky2_hw *hw = dev_id;
4613 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4614
4615 if (status == 0)
4616 return IRQ_NONE;
4617
4618 if (status & Y2_IS_IRQ_SW) {
4619 hw->flags |= SKY2_HW_USE_MSI;
4620 wake_up(&hw->msi_wait);
4621 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4622 }
4623 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4624
4625 return IRQ_HANDLED;
4626 }
4627
4628 /* Test interrupt path by forcing a a software IRQ */
4629 static int __devinit sky2_test_msi(struct sky2_hw *hw)
4630 {
4631 struct pci_dev *pdev = hw->pdev;
4632 int err;
4633
4634 init_waitqueue_head (&hw->msi_wait);
4635
4636 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4637
4638 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4639 if (err) {
4640 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4641 return err;
4642 }
4643
4644 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4645 sky2_read8(hw, B0_CTST);
4646
4647 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4648
4649 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4650 /* MSI test failed, go back to INTx mode */
4651 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4652 "switching to INTx mode.\n");
4653
4654 err = -EOPNOTSUPP;
4655 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4656 }
4657
4658 sky2_write32(hw, B0_IMSK, 0);
4659 sky2_read32(hw, B0_IMSK);
4660
4661 free_irq(pdev->irq, hw);
4662
4663 return err;
4664 }
4665
4666 /* This driver supports yukon2 chipset only */
4667 static const char *sky2_name(u8 chipid, char *buf, int sz)
4668 {
4669 const char *name[] = {
4670 "XL", /* 0xb3 */
4671 "EC Ultra", /* 0xb4 */
4672 "Extreme", /* 0xb5 */
4673 "EC", /* 0xb6 */
4674 "FE", /* 0xb7 */
4675 "FE+", /* 0xb8 */
4676 "Supreme", /* 0xb9 */
4677 "UL 2", /* 0xba */
4678 "Unknown", /* 0xbb */
4679 "Optima", /* 0xbc */
4680 };
4681
4682 if (chipid >= CHIP_ID_YUKON_XL && chipid <= CHIP_ID_YUKON_OPT)
4683 strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
4684 else
4685 snprintf(buf, sz, "(chip %#x)", chipid);
4686 return buf;
4687 }
4688
4689 static int __devinit sky2_probe(struct pci_dev *pdev,
4690 const struct pci_device_id *ent)
4691 {
4692 struct net_device *dev;
4693 struct sky2_hw *hw;
4694 int err, using_dac = 0, wol_default;
4695 u32 reg;
4696 char buf1[16];
4697
4698 err = pci_enable_device(pdev);
4699 if (err) {
4700 dev_err(&pdev->dev, "cannot enable PCI device\n");
4701 goto err_out;
4702 }
4703
4704 /* Get configuration information
4705 * Note: only regular PCI config access once to test for HW issues
4706 * other PCI access through shared memory for speed and to
4707 * avoid MMCONFIG problems.
4708 */
4709 err = pci_read_config_dword(pdev, PCI_DEV_REG2, &reg);
4710 if (err) {
4711 dev_err(&pdev->dev, "PCI read config failed\n");
4712 goto err_out;
4713 }
4714
4715 if (~reg == 0) {
4716 dev_err(&pdev->dev, "PCI configuration read error\n");
4717 goto err_out;
4718 }
4719
4720 err = pci_request_regions(pdev, DRV_NAME);
4721 if (err) {
4722 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4723 goto err_out_disable;
4724 }
4725
4726 pci_set_master(pdev);
4727
4728 if (sizeof(dma_addr_t) > sizeof(u32) &&
4729 !(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))) {
4730 using_dac = 1;
4731 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4732 if (err < 0) {
4733 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4734 "for consistent allocations\n");
4735 goto err_out_free_regions;
4736 }
4737 } else {
4738 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4739 if (err) {
4740 dev_err(&pdev->dev, "no usable DMA configuration\n");
4741 goto err_out_free_regions;
4742 }
4743 }
4744
4745
4746 #ifdef __BIG_ENDIAN
4747 /* The sk98lin vendor driver uses hardware byte swapping but
4748 * this driver uses software swapping.
4749 */
4750 reg &= ~PCI_REV_DESC;
4751 err = pci_write_config_dword(pdev,PCI_DEV_REG2, reg);
4752 if (err) {
4753 dev_err(&pdev->dev, "PCI write config failed\n");
4754 goto err_out_free_regions;
4755 }
4756 #endif
4757
4758 wol_default = device_may_wakeup(&pdev->dev) ? WAKE_MAGIC : 0;
4759
4760 err = -ENOMEM;
4761
4762 hw = kzalloc(sizeof(*hw) + strlen(DRV_NAME "@pci:")
4763 + strlen(pci_name(pdev)) + 1, GFP_KERNEL);
4764 if (!hw) {
4765 dev_err(&pdev->dev, "cannot allocate hardware struct\n");
4766 goto err_out_free_regions;
4767 }
4768
4769 hw->pdev = pdev;
4770 sprintf(hw->irq_name, DRV_NAME "@pci:%s", pci_name(pdev));
4771
4772 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
4773 if (!hw->regs) {
4774 dev_err(&pdev->dev, "cannot map device registers\n");
4775 goto err_out_free_hw;
4776 }
4777
4778 err = sky2_init(hw);
4779 if (err)
4780 goto err_out_iounmap;
4781
4782 /* ring for status responses */
4783 hw->st_size = hw->ports * roundup_pow_of_two(3*RX_MAX_PENDING + TX_MAX_PENDING);
4784 hw->st_le = pci_alloc_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
4785 &hw->st_dma);
4786 if (!hw->st_le)
4787 goto err_out_reset;
4788
4789 dev_info(&pdev->dev, "Yukon-2 %s chip revision %d\n",
4790 sky2_name(hw->chip_id, buf1, sizeof(buf1)), hw->chip_rev);
4791
4792 sky2_reset(hw);
4793
4794 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
4795 if (!dev) {
4796 err = -ENOMEM;
4797 goto err_out_free_pci;
4798 }
4799
4800 if (!disable_msi && pci_enable_msi(pdev) == 0) {
4801 err = sky2_test_msi(hw);
4802 if (err == -EOPNOTSUPP)
4803 pci_disable_msi(pdev);
4804 else if (err)
4805 goto err_out_free_netdev;
4806 }
4807
4808 err = register_netdev(dev);
4809 if (err) {
4810 dev_err(&pdev->dev, "cannot register net device\n");
4811 goto err_out_free_netdev;
4812 }
4813
4814 netif_carrier_off(dev);
4815
4816 netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
4817
4818 err = request_irq(pdev->irq, sky2_intr,
4819 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
4820 hw->irq_name, hw);
4821 if (err) {
4822 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4823 goto err_out_unregister;
4824 }
4825 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4826 napi_enable(&hw->napi);
4827
4828 sky2_show_addr(dev);
4829
4830 if (hw->ports > 1) {
4831 struct net_device *dev1;
4832
4833 err = -ENOMEM;
4834 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
4835 if (dev1 && (err = register_netdev(dev1)) == 0)
4836 sky2_show_addr(dev1);
4837 else {
4838 dev_warn(&pdev->dev,
4839 "register of second port failed (%d)\n", err);
4840 hw->dev[1] = NULL;
4841 hw->ports = 1;
4842 if (dev1)
4843 free_netdev(dev1);
4844 }
4845 }
4846
4847 setup_timer(&hw->watchdog_timer, sky2_watchdog, (unsigned long) hw);
4848 INIT_WORK(&hw->restart_work, sky2_restart);
4849
4850 pci_set_drvdata(pdev, hw);
4851 pdev->d3_delay = 150;
4852
4853 return 0;
4854
4855 err_out_unregister:
4856 if (hw->flags & SKY2_HW_USE_MSI)
4857 pci_disable_msi(pdev);
4858 unregister_netdev(dev);
4859 err_out_free_netdev:
4860 free_netdev(dev);
4861 err_out_free_pci:
4862 pci_free_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
4863 hw->st_le, hw->st_dma);
4864 err_out_reset:
4865 sky2_write8(hw, B0_CTST, CS_RST_SET);
4866 err_out_iounmap:
4867 iounmap(hw->regs);
4868 err_out_free_hw:
4869 kfree(hw);
4870 err_out_free_regions:
4871 pci_release_regions(pdev);
4872 err_out_disable:
4873 pci_disable_device(pdev);
4874 err_out:
4875 pci_set_drvdata(pdev, NULL);
4876 return err;
4877 }
4878
4879 static void __devexit sky2_remove(struct pci_dev *pdev)
4880 {
4881 struct sky2_hw *hw = pci_get_drvdata(pdev);
4882 int i;
4883
4884 if (!hw)
4885 return;
4886
4887 del_timer_sync(&hw->watchdog_timer);
4888 cancel_work_sync(&hw->restart_work);
4889
4890 for (i = hw->ports-1; i >= 0; --i)
4891 unregister_netdev(hw->dev[i]);
4892
4893 sky2_write32(hw, B0_IMSK, 0);
4894
4895 sky2_power_aux(hw);
4896
4897 sky2_write8(hw, B0_CTST, CS_RST_SET);
4898 sky2_read8(hw, B0_CTST);
4899
4900 free_irq(pdev->irq, hw);
4901 if (hw->flags & SKY2_HW_USE_MSI)
4902 pci_disable_msi(pdev);
4903 pci_free_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
4904 hw->st_le, hw->st_dma);
4905 pci_release_regions(pdev);
4906 pci_disable_device(pdev);
4907
4908 for (i = hw->ports-1; i >= 0; --i)
4909 free_netdev(hw->dev[i]);
4910
4911 iounmap(hw->regs);
4912 kfree(hw);
4913
4914 pci_set_drvdata(pdev, NULL);
4915 }
4916
4917 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
4918 {
4919 struct sky2_hw *hw = pci_get_drvdata(pdev);
4920 int i, wol = 0;
4921
4922 if (!hw)
4923 return 0;
4924
4925 del_timer_sync(&hw->watchdog_timer);
4926 cancel_work_sync(&hw->restart_work);
4927
4928 rtnl_lock();
4929
4930 sky2_all_down(hw);
4931 for (i = 0; i < hw->ports; i++) {
4932 struct net_device *dev = hw->dev[i];
4933 struct sky2_port *sky2 = netdev_priv(dev);
4934
4935 if (sky2->wol)
4936 sky2_wol_init(sky2);
4937
4938 wol |= sky2->wol;
4939 }
4940
4941 device_set_wakeup_enable(&pdev->dev, wol != 0);
4942
4943 sky2_power_aux(hw);
4944 rtnl_unlock();
4945
4946 pci_save_state(pdev);
4947 pci_enable_wake(pdev, pci_choose_state(pdev, state), wol);
4948 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4949
4950 return 0;
4951 }
4952
4953 #ifdef CONFIG_PM
4954 static int sky2_resume(struct pci_dev *pdev)
4955 {
4956 struct sky2_hw *hw = pci_get_drvdata(pdev);
4957 int err;
4958
4959 if (!hw)
4960 return 0;
4961
4962 err = pci_set_power_state(pdev, PCI_D0);
4963 if (err)
4964 goto out;
4965
4966 err = pci_restore_state(pdev);
4967 if (err)
4968 goto out;
4969
4970 pci_enable_wake(pdev, PCI_D0, 0);
4971
4972 /* Re-enable all clocks */
4973 err = pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
4974 if (err) {
4975 dev_err(&pdev->dev, "PCI write config failed\n");
4976 goto out;
4977 }
4978
4979 rtnl_lock();
4980 sky2_reset(hw);
4981 sky2_all_up(hw);
4982 rtnl_unlock();
4983
4984 return 0;
4985 out:
4986
4987 dev_err(&pdev->dev, "resume failed (%d)\n", err);
4988 pci_disable_device(pdev);
4989 return err;
4990 }
4991 #endif
4992
4993 static void sky2_shutdown(struct pci_dev *pdev)
4994 {
4995 sky2_suspend(pdev, PMSG_SUSPEND);
4996 }
4997
4998 static struct pci_driver sky2_driver = {
4999 .name = DRV_NAME,
5000 .id_table = sky2_id_table,
5001 .probe = sky2_probe,
5002 .remove = __devexit_p(sky2_remove),
5003 #ifdef CONFIG_PM
5004 .suspend = sky2_suspend,
5005 .resume = sky2_resume,
5006 #endif
5007 .shutdown = sky2_shutdown,
5008 };
5009
5010 static int __init sky2_init_module(void)
5011 {
5012 pr_info("driver version " DRV_VERSION "\n");
5013
5014 sky2_debug_init();
5015 return pci_register_driver(&sky2_driver);
5016 }
5017
5018 static void __exit sky2_cleanup_module(void)
5019 {
5020 pci_unregister_driver(&sky2_driver);
5021 sky2_debug_cleanup();
5022 }
5023
5024 module_init(sky2_init_module);
5025 module_exit(sky2_cleanup_module);
5026
5027 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
5028 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
5029 MODULE_LICENSE("GPL");
5030 MODULE_VERSION(DRV_VERSION);
kernel-based virtual machine