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sky2: hand receive DMA mapping failures
[linux-2.6-block.git] / drivers / net / sky2.c
CommitLineData
cd28ab6a
SH		 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
798b6b19 13 * the Free Software Foundation; either version 2 of the License.
cd28ab6a
SH		 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
793b883e 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
cd28ab6a
SH		 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
793b883e 25#include <linux/crc32.h>
cd28ab6a 26#include <linux/kernel.h>
cd28ab6a
SH		 27#include <linux/module.h>
28#include <linux/netdevice.h>
d0bbccfa 29#include <linux/dma-mapping.h>
cd28ab6a
SH		 30#include <linux/etherdevice.h>
31#include <linux/ethtool.h>
32#include <linux/pci.h>
33#include <linux/ip.h>
c9bdd4b5 34#include <net/ip.h>
cd28ab6a
SH		 35#include <linux/tcp.h>
36#include <linux/in.h>
37#include <linux/delay.h>
91c86df5 38#include <linux/workqueue.h>
d1f13708 39#include <linux/if_vlan.h>
d70cd51a 40#include <linux/prefetch.h>
3cf26753 41#include <linux/debugfs.h>
ef743d33 42#include <linux/mii.h>
cd28ab6a
SH		 43
44#include <asm/irq.h>
45
d1f13708 46#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
47#define SKY2_VLAN_TAG_USED 1
48#endif
49
cd28ab6a
SH		 50#include "sky2.h"
51
52#define DRV_NAME "sky2"
ac958154 53#define DRV_VERSION "1.26"
cd28ab6a
SH		 54#define PFX DRV_NAME " "
55
56/*
57 * The Yukon II chipset takes 64 bit command blocks (called list elements)
58 * that are organized into three (receive, transmit, status) different rings
14d0263f 59 * similar to Tigon3.
cd28ab6a
SH		 60 */
61
14d0263f 62#define RX_LE_SIZE 1024
cd28ab6a 63#define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
14d0263f 64#define RX_MAX_PENDING (RX_LE_SIZE/6 - 2)
13210ce5 65#define RX_DEF_PENDING RX_MAX_PENDING
793b883e 66
ee5f68fe 67/* This is the worst case number of transmit list elements for a single skb:
07e31637
SH		 68 VLAN:GSO + CKSUM + Data + skb_frags * DMA */
69#define MAX_SKB_TX_LE (2 + (sizeof(dma_addr_t)/sizeof(u32))*(MAX_SKB_FRAGS+1))
e9c1be80 70#define TX_MIN_PENDING (MAX_SKB_TX_LE+1)
ee5f68fe
SH		 71#define TX_MAX_PENDING 4096
72#define TX_DEF_PENDING 127
cd28ab6a 73
793b883e 74#define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
cd28ab6a 75#define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
cd28ab6a
SH		 76#define TX_WATCHDOG (5 * HZ)
77#define NAPI_WEIGHT 64
78#define PHY_RETRIES 1000
79
f4331a6d
SH		 80#define SKY2_EEPROM_MAGIC 0x9955aabb
81
82
cb5d9547
SH		 83#define RING_NEXT(x,s) (((x)+1) & ((s)-1))
84
cd28ab6a 85static const u32 default_msg =
793b883e
SH		 86 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
87 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
3be92a70 88 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
cd28ab6a 89
793b883e 90static int debug = -1; /* defaults above */
cd28ab6a
SH		 91module_param(debug, int, 0);
92MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
93
14d0263f 94static int copybreak __read_mostly = 128;
bdb5c58e
SH		 95module_param(copybreak, int, 0);
96MODULE_PARM_DESC(copybreak, "Receive copy threshold");
97
fb2690a9
SH		 98static int disable_msi = 0;
99module_param(disable_msi, int, 0);
100MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
101
e6cac9ba 102static DEFINE_PCI_DEVICE_TABLE(sky2_id_table) = {
e5b74c7d
SH		 103 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
104 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
e30a4ac2 105 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E01) }, /* SK-9E21M */
2d2a3871 106 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
2f4a66ad 107 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
508f89e7 108 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
f1a0b6f5 109 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B03) }, /* DGE-550T */
e5b74c7d
SH		 110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
05745c4a 122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4354) }, /* 88E8040 */
a3b4fced 123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4355) }, /* 88E8040T */
e5b74c7d 124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4356) }, /* 88EC033 */
5a37a68d 125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4357) }, /* 88E8042 */
05745c4a 126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x435A) }, /* 88E8048 */
e5b74c7d
SH		 127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) }, /* 88E8052 */
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) }, /* 88E8050 */
129 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) }, /* 88E8053 */
130 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) }, /* 88E8055 */
131 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) }, /* 88E8056 */
05745c4a 132 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4365) }, /* 88E8070 */
e5b74c7d
SH		 133 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) }, /* 88EC036 */
134 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) }, /* 88EC032 */
135 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) }, /* 88EC034 */
f1a0b6f5
SH		 136 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4369) }, /* 88EC042 */
137 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436A) }, /* 88E8058 */
69161611 138 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436B) }, /* 88E8071 */
5a37a68d 139 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436C) }, /* 88E8072 */
ed4d4161
SH		 140 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436D) }, /* 88E8055 */
141 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4370) }, /* 88E8075 */
0ce8b98d 142 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4380) }, /* 88E8057 */
0f5aac70 143 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4381) }, /* 88E8059 */
cd28ab6a
SH		 144 { 0 }
145};
793b883e 146
cd28ab6a
SH		 147MODULE_DEVICE_TABLE(pci, sky2_id_table);
148
149/* Avoid conditionals by using array */
150static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
151static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
f4ea431b 152static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
cd28ab6a 153
d1b139c0
SH		 154static void sky2_set_multicast(struct net_device *dev);
155
af043aa5 156/* Access to PHY via serial interconnect */
ef743d33 157static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
cd28ab6a
SH		 158{
159 int i;
160
161 gma_write16(hw, port, GM_SMI_DATA, val);
162 gma_write16(hw, port, GM_SMI_CTRL,
163 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
164
165 for (i = 0; i < PHY_RETRIES; i++) {
af043aa5
SH		 166 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
167 if (ctrl == 0xffff)
168 goto io_error;
169
170 if (!(ctrl & GM_SMI_CT_BUSY))
ef743d33 171 return 0;
af043aa5
SH		 172
173 udelay(10);
cd28ab6a 174 }
ef743d33 175
af043aa5 176 dev_warn(&hw->pdev->dev,"%s: phy write timeout\n", hw->dev[port]->name);
ef743d33 177 return -ETIMEDOUT;
af043aa5
SH		 178
179io_error:
180 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
181 return -EIO;
cd28ab6a
SH		 182}
183
ef743d33 184static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
cd28ab6a
SH		 185{
186 int i;
187
793b883e 188 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
cd28ab6a
SH		 189 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
190
191 for (i = 0; i < PHY_RETRIES; i++) {
af043aa5
SH		 192 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
193 if (ctrl == 0xffff)
194 goto io_error;
195
196 if (ctrl & GM_SMI_CT_RD_VAL) {
ef743d33 197 *val = gma_read16(hw, port, GM_SMI_DATA);
198 return 0;
199 }
200
af043aa5 201 udelay(10);
cd28ab6a
SH		 202 }
203
af043aa5 204 dev_warn(&hw->pdev->dev, "%s: phy read timeout\n", hw->dev[port]->name);
ef743d33 205 return -ETIMEDOUT;
af043aa5
SH		 206io_error:
207 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
208 return -EIO;
ef743d33 209}
210
af043aa5 211static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
ef743d33 212{
213 u16 v;
af043aa5 214 __gm_phy_read(hw, port, reg, &v);
ef743d33 215 return v;
cd28ab6a
SH		 216}
217
5afa0a9c 218
ae306cca
SH		 219static void sky2_power_on(struct sky2_hw *hw)
220{
221 /* switch power to VCC (WA for VAUX problem) */
222 sky2_write8(hw, B0_POWER_CTRL,
223 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
5afa0a9c 224
ae306cca
SH		 225 /* disable Core Clock Division, */
226 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
d3bcfbeb 227
ae306cca
SH		 228 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
229 /* enable bits are inverted */
230 sky2_write8(hw, B2_Y2_CLK_GATE,
231 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
232 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
233 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
234 else
235 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
977bdf06 236
ea76e635 237 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
fc99fe06 238 u32 reg;
5afa0a9c 239
b32f40c4 240 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
b2345773 241
b32f40c4 242 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
fc99fe06
SH		 243 /* set all bits to 0 except bits 15..12 and 8 */
244 reg &= P_ASPM_CONTROL_MSK;
b32f40c4 245 sky2_pci_write32(hw, PCI_DEV_REG4, reg);
fc99fe06 246
b32f40c4 247 reg = sky2_pci_read32(hw, PCI_DEV_REG5);
fc99fe06
SH		 248 /* set all bits to 0 except bits 28 & 27 */
249 reg &= P_CTL_TIM_VMAIN_AV_MSK;
b32f40c4 250 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
fc99fe06 251
b32f40c4 252 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
8f70920f
SH		 253
254 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
255 reg = sky2_read32(hw, B2_GP_IO);
256 reg |= GLB_GPIO_STAT_RACE_DIS;
257 sky2_write32(hw, B2_GP_IO, reg);
b2345773
SH		 258
259 sky2_read32(hw, B2_GP_IO);
5afa0a9c 260 }
10547ae2
SH		 261
262 /* Turn on "driver loaded" LED */
263 sky2_write16(hw, B0_CTST, Y2_LED_STAT_ON);
ae306cca 264}
5afa0a9c 265
ae306cca
SH		 266static void sky2_power_aux(struct sky2_hw *hw)
267{
268 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
269 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
270 else
271 /* enable bits are inverted */
272 sky2_write8(hw, B2_Y2_CLK_GATE,
273 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
274 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
275 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
276
c23ddf8f
SH		 277 /* switch power to VAUX if supported and PME from D3cold */
278 if ( (sky2_read32(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
279 pci_pme_capable(hw->pdev, PCI_D3cold))
ae306cca
SH		 280 sky2_write8(hw, B0_POWER_CTRL,
281 (PC_VAUX_ENA | PC_VCC_ENA |
282 PC_VAUX_ON | PC_VCC_OFF));
10547ae2
SH		 283
284 /* turn off "driver loaded LED" */
285 sky2_write16(hw, B0_CTST, Y2_LED_STAT_OFF);
5afa0a9c 286}
287
d3bcfbeb 288static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
cd28ab6a
SH		 289{
290 u16 reg;
291
292 /* disable all GMAC IRQ's */
293 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
793b883e 294
cd28ab6a
SH		 295 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
296 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
297 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
298 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
299
300 reg = gma_read16(hw, port, GM_RX_CTRL);
301 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
302 gma_write16(hw, port, GM_RX_CTRL, reg);
303}
304
16ad91e1
SH		 305/* flow control to advertise bits */
306static const u16 copper_fc_adv[] = {
307 [FC_NONE] = 0,
308 [FC_TX] = PHY_M_AN_ASP,
309 [FC_RX] = PHY_M_AN_PC,
310 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
311};
312
313/* flow control to advertise bits when using 1000BaseX */
314static const u16 fiber_fc_adv[] = {
df3fe1f3 315 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
16ad91e1
SH		 316 [FC_TX] = PHY_M_P_ASYM_MD_X,
317 [FC_RX] = PHY_M_P_SYM_MD_X,
df3fe1f3 318 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
16ad91e1
SH		 319};
320
321/* flow control to GMA disable bits */
322static const u16 gm_fc_disable[] = {
323 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
324 [FC_TX] = GM_GPCR_FC_RX_DIS,
325 [FC_RX] = GM_GPCR_FC_TX_DIS,
326 [FC_BOTH] = 0,
327};
328
329
cd28ab6a
SH		 330static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
331{
332 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
2eaba1a2 333 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
cd28ab6a 334
0ea065e5 335 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
ea76e635 336 !(hw->flags & SKY2_HW_NEWER_PHY)) {
cd28ab6a
SH		 337 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
338
339 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
793b883e 340 PHY_M_EC_MAC_S_MSK);
cd28ab6a
SH		 341 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
342
53419c68 343 /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
cd28ab6a 344 if (hw->chip_id == CHIP_ID_YUKON_EC)
53419c68 345 /* set downshift counter to 3x and enable downshift */
cd28ab6a
SH		 346 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
347 else
53419c68
SH		 348 /* set master & slave downshift counter to 1x */
349 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
cd28ab6a
SH		 350
351 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
352 }
353
354 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
b89165f2 355 if (sky2_is_copper(hw)) {
05745c4a 356 if (!(hw->flags & SKY2_HW_GIGABIT)) {
cd28ab6a
SH		 357 /* enable automatic crossover */
358 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
6d3105d5
SH		 359
360 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
361 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
362 u16 spec;
363
364 /* Enable Class A driver for FE+ A0 */
365 spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2);
366 spec |= PHY_M_FESC_SEL_CL_A;
367 gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec);
368 }
cd28ab6a
SH		 369 } else {
370 /* disable energy detect */
371 ctrl &= ~PHY_M_PC_EN_DET_MSK;
372
373 /* enable automatic crossover */
374 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
375
53419c68 376 /* downshift on PHY 88E1112 and 88E1149 is changed */
8e95a202
JP		 377 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
378 (hw->flags & SKY2_HW_NEWER_PHY)) {
53419c68 379 /* set downshift counter to 3x and enable downshift */
cd28ab6a
SH		 380 ctrl &= ~PHY_M_PC_DSC_MSK;
381 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
382 }
383 }
cd28ab6a
SH		 384 } else {
385 /* workaround for deviation #4.88 (CRC errors) */
386 /* disable Automatic Crossover */
387
388 ctrl &= ~PHY_M_PC_MDIX_MSK;
b89165f2 389 }
cd28ab6a 390
b89165f2
SH		 391 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
392
393 /* special setup for PHY 88E1112 Fiber */
ea76e635 394 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
b89165f2 395 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
cd28ab6a 396
b89165f2
SH		 397 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
398 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
399 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
400 ctrl &= ~PHY_M_MAC_MD_MSK;
401 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
402 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
403
404 if (hw->pmd_type == 'P') {
cd28ab6a
SH		 405 /* select page 1 to access Fiber registers */
406 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
b89165f2
SH		 407
408 /* for SFP-module set SIGDET polarity to low */
409 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
410 ctrl |= PHY_M_FIB_SIGD_POL;
34dd962b 411 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
cd28ab6a 412 }
b89165f2
SH		 413
414 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
cd28ab6a
SH		 415 }
416
7800fddc 417 ctrl = PHY_CT_RESET;
cd28ab6a
SH		 418 ct1000 = 0;
419 adv = PHY_AN_CSMA;
2eaba1a2 420 reg = 0;
cd28ab6a 421
0ea065e5 422 if (sky2->flags & SKY2_FLAG_AUTO_SPEED) {
b89165f2 423 if (sky2_is_copper(hw)) {
cd28ab6a
SH		 424 if (sky2->advertising & ADVERTISED_1000baseT_Full)
425 ct1000 |= PHY_M_1000C_AFD;
426 if (sky2->advertising & ADVERTISED_1000baseT_Half)
427 ct1000 |= PHY_M_1000C_AHD;
428 if (sky2->advertising & ADVERTISED_100baseT_Full)
429 adv |= PHY_M_AN_100_FD;
430 if (sky2->advertising & ADVERTISED_100baseT_Half)
431 adv |= PHY_M_AN_100_HD;
432 if (sky2->advertising & ADVERTISED_10baseT_Full)
433 adv |= PHY_M_AN_10_FD;
434 if (sky2->advertising & ADVERTISED_10baseT_Half)
435 adv |= PHY_M_AN_10_HD;
709c6e7b 436
b89165f2
SH		 437 } else { /* special defines for FIBER (88E1040S only) */
438 if (sky2->advertising & ADVERTISED_1000baseT_Full)
439 adv |= PHY_M_AN_1000X_AFD;
440 if (sky2->advertising & ADVERTISED_1000baseT_Half)
441 adv |= PHY_M_AN_1000X_AHD;
709c6e7b 442 }
cd28ab6a
SH		 443
444 /* Restart Auto-negotiation */
445 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
446 } else {
447 /* forced speed/duplex settings */
448 ct1000 = PHY_M_1000C_MSE;
449
0ea065e5
SH		 450 /* Disable auto update for duplex flow control and duplex */
451 reg |= GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_SPD_DIS;
cd28ab6a
SH		 452
453 switch (sky2->speed) {
454 case SPEED_1000:
455 ctrl |= PHY_CT_SP1000;
2eaba1a2 456 reg |= GM_GPCR_SPEED_1000;
cd28ab6a
SH		 457 break;
458 case SPEED_100:
459 ctrl |= PHY_CT_SP100;
2eaba1a2 460 reg |= GM_GPCR_SPEED_100;
cd28ab6a
SH		 461 break;
462 }
463
2eaba1a2
SH		 464 if (sky2->duplex == DUPLEX_FULL) {
465 reg |= GM_GPCR_DUP_FULL;
466 ctrl |= PHY_CT_DUP_MD;
16ad91e1
SH		 467 } else if (sky2->speed < SPEED_1000)
468 sky2->flow_mode = FC_NONE;
0ea065e5 469 }
2eaba1a2 470
0ea065e5
SH		 471 if (sky2->flags & SKY2_FLAG_AUTO_PAUSE) {
472 if (sky2_is_copper(hw))
473 adv |= copper_fc_adv[sky2->flow_mode];
474 else
475 adv |= fiber_fc_adv[sky2->flow_mode];
476 } else {
477 reg |= GM_GPCR_AU_FCT_DIS;
16ad91e1 478 reg |= gm_fc_disable[sky2->flow_mode];
2eaba1a2
SH		 479
480 /* Forward pause packets to GMAC? */
16ad91e1 481 if (sky2->flow_mode & FC_RX)
2eaba1a2
SH		 482 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
483 else
484 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
cd28ab6a
SH		 485 }
486
2eaba1a2
SH		 487 gma_write16(hw, port, GM_GP_CTRL, reg);
488
05745c4a 489 if (hw->flags & SKY2_HW_GIGABIT)
cd28ab6a
SH		 490 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
491
492 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
493 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
494
495 /* Setup Phy LED's */
496 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
497 ledover = 0;
498
499 switch (hw->chip_id) {
500 case CHIP_ID_YUKON_FE:
501 /* on 88E3082 these bits are at 11..9 (shifted left) */
502 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
503
504 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
505
506 /* delete ACT LED control bits */
507 ctrl &= ~PHY_M_FELP_LED1_MSK;
508 /* change ACT LED control to blink mode */
509 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
510 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
511 break;
512
05745c4a
SH		 513 case CHIP_ID_YUKON_FE_P:
514 /* Enable Link Partner Next Page */
515 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
516 ctrl |= PHY_M_PC_ENA_LIP_NP;
517
518 /* disable Energy Detect and enable scrambler */
519 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
520 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
521
522 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
523 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
524 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
525 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
526
527 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
528 break;
529
cd28ab6a 530 case CHIP_ID_YUKON_XL:
793b883e 531 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
cd28ab6a
SH		 532
533 /* select page 3 to access LED control register */
534 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
535
536 /* set LED Function Control register */
ed6d32c7
SH		 537 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
538 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
539 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
540 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
541 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
cd28ab6a
SH		 542
543 /* set Polarity Control register */
544 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
793b883e
SH		 545 (PHY_M_POLC_LS1_P_MIX(4) |
546 PHY_M_POLC_IS0_P_MIX(4) |
547 PHY_M_POLC_LOS_CTRL(2) |
548 PHY_M_POLC_INIT_CTRL(2) |
549 PHY_M_POLC_STA1_CTRL(2) |
550 PHY_M_POLC_STA0_CTRL(2)));
cd28ab6a
SH		 551
552 /* restore page register */
793b883e 553 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
cd28ab6a 554 break;
93745494 555
ed6d32c7 556 case CHIP_ID_YUKON_EC_U:
93745494 557 case CHIP_ID_YUKON_EX:
ed4d4161 558 case CHIP_ID_YUKON_SUPR:
ed6d32c7
SH		 559 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
560
561 /* select page 3 to access LED control register */
562 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
563
564 /* set LED Function Control register */
565 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
566 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
567 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
568 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
569 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
570
571 /* set Blink Rate in LED Timer Control Register */
572 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
573 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
574 /* restore page register */
575 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
576 break;
cd28ab6a
SH		 577
578 default:
579 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
580 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
a84d0a3d 581
cd28ab6a 582 /* turn off the Rx LED (LED_RX) */
a84d0a3d 583 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
cd28ab6a
SH		 584 }
585
0ce8b98d 586 if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_UL_2) {
977bdf06 587 /* apply fixes in PHY AFE */
ed6d32c7
SH		 588 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
589
977bdf06 590 /* increase differential signal amplitude in 10BASE-T */
ed6d32c7
SH		 591 gm_phy_write(hw, port, 0x18, 0xaa99);
592 gm_phy_write(hw, port, 0x17, 0x2011);
cd28ab6a 593
0ce8b98d
SH		 594 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
595 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
596 gm_phy_write(hw, port, 0x18, 0xa204);
597 gm_phy_write(hw, port, 0x17, 0x2002);
598 }
977bdf06
SH		 599
600 /* set page register to 0 */
9467a8fc 601 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
05745c4a
SH		 602 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
603 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
604 /* apply workaround for integrated resistors calibration */
605 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
606 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
0f5aac70
SH		 607 } else if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
608 /* apply fixes in PHY AFE */
609 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00ff);
610
611 /* apply RDAC termination workaround */
612 gm_phy_write(hw, port, 24, 0x2800);
613 gm_phy_write(hw, port, 23, 0x2001);
614
615 /* set page register back to 0 */
616 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
e1a74b37
SH		 617 } else if (hw->chip_id != CHIP_ID_YUKON_EX &&
618 hw->chip_id < CHIP_ID_YUKON_SUPR) {
05745c4a 619 /* no effect on Yukon-XL */
977bdf06 620 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
cd28ab6a 621
8e95a202
JP		 622 if (!(sky2->flags & SKY2_FLAG_AUTO_SPEED) ||
623 sky2->speed == SPEED_100) {
977bdf06 624 /* turn on 100 Mbps LED (LED_LINK100) */
a84d0a3d 625 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
977bdf06 626 }
cd28ab6a 627
977bdf06
SH		 628 if (ledover)
629 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
630
631 }
2eaba1a2 632
d571b694 633 /* Enable phy interrupt on auto-negotiation complete (or link up) */
0ea065e5 634 if (sky2->flags & SKY2_FLAG_AUTO_SPEED)
cd28ab6a
SH		 635 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
636 else
637 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
638}
639
b96936da
SH		 640static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
641static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
642
643static void sky2_phy_power_up(struct sky2_hw *hw, unsigned port)
d3bcfbeb 644{
645 u32 reg1;
d3bcfbeb 646
a40ccc68 647 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
b32f40c4 648 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
b96936da 649 reg1 &= ~phy_power[port];
d3bcfbeb 650
b96936da 651 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
ff35164e
SH		 652 reg1 |= coma_mode[port];
653
b32f40c4 654 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
a40ccc68 655 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
82637e80 656 sky2_pci_read32(hw, PCI_DEV_REG1);
f71eb1a2
SH		 657
658 if (hw->chip_id == CHIP_ID_YUKON_FE)
659 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_ANE);
660 else if (hw->flags & SKY2_HW_ADV_POWER_CTL)
661 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
b96936da 662}
167f53d0 663
b96936da
SH		 664static void sky2_phy_power_down(struct sky2_hw *hw, unsigned port)
665{
666 u32 reg1;
db99b988
SH		 667 u16 ctrl;
668
669 /* release GPHY Control reset */
670 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
671
672 /* release GMAC reset */
673 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
674
675 if (hw->flags & SKY2_HW_NEWER_PHY) {
676 /* select page 2 to access MAC control register */
677 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
678
679 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
680 /* allow GMII Power Down */
681 ctrl &= ~PHY_M_MAC_GMIF_PUP;
682 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
683
684 /* set page register back to 0 */
685 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
686 }
687
688 /* setup General Purpose Control Register */
689 gma_write16(hw, port, GM_GP_CTRL,
0ea065e5
SH		 690 GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 |
691 GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_FCT_DIS |
692 GM_GPCR_AU_SPD_DIS);
db99b988
SH		 693
694 if (hw->chip_id != CHIP_ID_YUKON_EC) {
695 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
e484d5f5
RW		 696 /* select page 2 to access MAC control register */
697 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
db99b988 698
e484d5f5 699 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
db99b988
SH		 700 /* enable Power Down */
701 ctrl |= PHY_M_PC_POW_D_ENA;
702 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
e484d5f5
RW		 703
704 /* set page register back to 0 */
705 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
db99b988
SH		 706 }
707
708 /* set IEEE compatible Power Down Mode (dev. #4.99) */
709 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_PDOWN);
710 }
b96936da 711
a40ccc68 712 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
b96936da 713 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
db99b988 714 reg1 |= phy_power[port]; /* set PHY to PowerDown/COMA Mode */
b96936da 715 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
a40ccc68 716 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
d3bcfbeb 717}
718
1b537565
SH		 719/* Force a renegotiation */
720static void sky2_phy_reinit(struct sky2_port *sky2)
721{
e07b1aa8 722 spin_lock_bh(&sky2->phy_lock);
1b537565 723 sky2_phy_init(sky2->hw, sky2->port);
e07b1aa8 724 spin_unlock_bh(&sky2->phy_lock);
1b537565
SH		 725}
726
e3173832
SH		 727/* Put device in state to listen for Wake On Lan */
728static void sky2_wol_init(struct sky2_port *sky2)
729{
730 struct sky2_hw *hw = sky2->hw;
731 unsigned port = sky2->port;
732 enum flow_control save_mode;
733 u16 ctrl;
734 u32 reg1;
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;
b96936da
SH		 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);
e3173832
SH		 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
a419aef8 780 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;
e3173832
SH		 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 /* Turn on legacy PCI-Express PME mode */
b32f40c4 786 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
e3173832 787 reg1 |= PCI_Y2_PME_LEGACY;
b32f40c4 788 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
e3173832
SH		 789
790 /* block receiver */
791 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
792
793}
794
69161611
SH		 795static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
796{
05745c4a
SH		 797 struct net_device *dev = hw->dev[port];
798
ed4d4161
SH		 799 if ( (hw->chip_id == CHIP_ID_YUKON_EX &&
800 hw->chip_rev != CHIP_REV_YU_EX_A0) ||
877c8570 801 hw->chip_id >= CHIP_ID_YUKON_FE_P) {
ed4d4161
SH		 802 /* Yukon-Extreme B0 and further Extreme devices */
803 /* enable Store & Forward mode for TX */
05745c4a 804
ed4d4161
SH		 805 if (dev->mtu <= ETH_DATA_LEN)
806 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
807 TX_JUMBO_DIS | TX_STFW_ENA);
69161611 808
ed4d4161
SH		 809 else
810 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
811 TX_JUMBO_ENA| TX_STFW_ENA);
812 } else {
813 if (dev->mtu <= ETH_DATA_LEN)
814 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
815 else {
816 /* set Tx GMAC FIFO Almost Empty Threshold */
817 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
818 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
69161611 819
ed4d4161
SH		 820 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
821
822 /* Can't do offload because of lack of store/forward */
823 dev->features &= ~(NETIF_F_TSO | NETIF_F_SG | NETIF_F_ALL_CSUM);
824 }
69161611
SH		 825 }
826}
827
cd28ab6a
SH		 828static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
829{
830 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
831 u16 reg;
25cccecc 832 u32 rx_reg;
cd28ab6a
SH		 833 int i;
834 const u8 *addr = hw->dev[port]->dev_addr;
835
f350339c
SH		 836 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
837 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
cd28ab6a
SH		 838
839 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
840
793b883e 841 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
cd28ab6a
SH		 842 /* WA DEV_472 -- looks like crossed wires on port 2 */
843 /* clear GMAC 1 Control reset */
844 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
845 do {
846 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
847 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
848 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
849 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
850 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
851 }
852
793b883e 853 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
cd28ab6a 854
2eaba1a2
SH		 855 /* Enable Transmit FIFO Underrun */
856 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
857
e07b1aa8 858 spin_lock_bh(&sky2->phy_lock);
b96936da 859 sky2_phy_power_up(hw, port);
cd28ab6a 860 sky2_phy_init(hw, port);
e07b1aa8 861 spin_unlock_bh(&sky2->phy_lock);
cd28ab6a
SH		 862
863 /* MIB clear */
864 reg = gma_read16(hw, port, GM_PHY_ADDR);
865 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
866
43f2f104
SH		 867 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
868 gma_read16(hw, port, i);
cd28ab6a
SH		 869 gma_write16(hw, port, GM_PHY_ADDR, reg);
870
871 /* transmit control */
872 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
873
874 /* receive control reg: unicast + multicast + no FCS */
875 gma_write16(hw, port, GM_RX_CTRL,
793b883e 876 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
cd28ab6a
SH		 877
878 /* transmit flow control */
879 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
880
881 /* transmit parameter */
882 gma_write16(hw, port, GM_TX_PARAM,
883 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
884 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
885 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
886 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
887
888 /* serial mode register */
889 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
6b1a3aef 890 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
cd28ab6a 891
6b1a3aef 892 if (hw->dev[port]->mtu > ETH_DATA_LEN)
cd28ab6a
SH		 893 reg |= GM_SMOD_JUMBO_ENA;
894
895 gma_write16(hw, port, GM_SERIAL_MODE, reg);
896
cd28ab6a
SH		 897 /* virtual address for data */
898 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
899
793b883e
SH		 900 /* physical address: used for pause frames */
901 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
902
903 /* ignore counter overflows */
cd28ab6a
SH		 904 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
905 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
906 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
907
908 /* Configure Rx MAC FIFO */
909 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
25cccecc 910 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
05745c4a
SH		 911 if (hw->chip_id == CHIP_ID_YUKON_EX ||
912 hw->chip_id == CHIP_ID_YUKON_FE_P)
25cccecc 913 rx_reg |= GMF_RX_OVER_ON;
69161611 914
25cccecc 915 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
cd28ab6a 916
798fdd07
SH		 917 if (hw->chip_id == CHIP_ID_YUKON_XL) {
918 /* Hardware errata - clear flush mask */
919 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0);
920 } else {
921 /* Flush Rx MAC FIFO on any flow control or error */
922 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
923 }
cd28ab6a 924
8df9a876 925 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
05745c4a
SH		 926 reg = RX_GMF_FL_THR_DEF + 1;
927 /* Another magic mystery workaround from sk98lin */
928 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
929 hw->chip_rev == CHIP_REV_YU_FE2_A0)
930 reg = 0x178;
931 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
cd28ab6a
SH		 932
933 /* Configure Tx MAC FIFO */
934 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
935 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
5a5b1ea0 936
e0c28116 937 /* On chips without ram buffer, pause is controled by MAC level */
39dbd958 938 if (!(hw->flags & SKY2_HW_RAM_BUFFER)) {
d6b54d24 939 /* Pause threshold is scaled by 8 in bytes */
8e95a202
JP		 940 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
941 hw->chip_rev == CHIP_REV_YU_FE2_A0)
d6b54d24
SH		 942 reg = 1568 / 8;
943 else
944 reg = 1024 / 8;
945 sky2_write16(hw, SK_REG(port, RX_GMF_UP_THR), reg);
946 sky2_write16(hw, SK_REG(port, RX_GMF_LP_THR), 768 / 8);
b628ed98 947
69161611 948 sky2_set_tx_stfwd(hw, port);
5a5b1ea0 949 }
950
e970d1f8
SH		 951 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
952 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
953 /* disable dynamic watermark */
954 reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA));
955 reg &= ~TX_DYN_WM_ENA;
956 sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg);
957 }
cd28ab6a
SH		 958}
959
67712901
SH		 960/* Assign Ram Buffer allocation to queue */
961static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
cd28ab6a 962{
67712901
SH		 963 u32 end;
964
965 /* convert from K bytes to qwords used for hw register */
966 start *= 1024/8;
967 space *= 1024/8;
968 end = start + space - 1;
793b883e 969
cd28ab6a
SH		 970 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
971 sky2_write32(hw, RB_ADDR(q, RB_START), start);
972 sky2_write32(hw, RB_ADDR(q, RB_END), end);
973 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
974 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
975
976 if (q == Q_R1 || q == Q_R2) {
1c28f6ba 977 u32 tp = space - space/4;
793b883e 978
1c28f6ba
SH		 979 /* On receive queue's set the thresholds
980 * give receiver priority when > 3/4 full
981 * send pause when down to 2K
982 */
983 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
984 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
793b883e 985
1c28f6ba
SH		 986 tp = space - 2048/8;
987 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
988 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
cd28ab6a
SH		 989 } else {
990 /* Enable store & forward on Tx queue's because
991 * Tx FIFO is only 1K on Yukon
992 */
993 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
994 }
995
996 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
793b883e 997 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
cd28ab6a
SH		 998}
999
cd28ab6a 1000/* Setup Bus Memory Interface */
af4ed7e6 1001static void sky2_qset(struct sky2_hw *hw, u16 q)
cd28ab6a
SH		 1002{
1003 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
1004 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
1005 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
af4ed7e6 1006 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
cd28ab6a
SH		 1007}
1008
cd28ab6a
SH		 1009/* Setup prefetch unit registers. This is the interface between
1010 * hardware and driver list elements
1011 */
8cc048e3 1012static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
d6e74b6b 1013 dma_addr_t addr, u32 last)
cd28ab6a 1014{
cd28ab6a
SH		 1015 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1016 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
d6e74b6b
SH		 1017 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), upper_32_bits(addr));
1018 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), lower_32_bits(addr));
cd28ab6a
SH		 1019 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
1020 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
793b883e
SH		 1021
1022 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
cd28ab6a
SH		 1023}
1024
9b289c33 1025static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2, u16 *slot)
793b883e 1026{
9b289c33 1027 struct sky2_tx_le *le = sky2->tx_le + *slot;
793b883e 1028
ee5f68fe 1029 *slot = RING_NEXT(*slot, sky2->tx_ring_size);
291ea614 1030 le->ctrl = 0;
793b883e
SH		 1031 return le;
1032}
cd28ab6a 1033
88f5f0ca
SH		 1034static void tx_init(struct sky2_port *sky2)
1035{
1036 struct sky2_tx_le *le;
1037
1038 sky2->tx_prod = sky2->tx_cons = 0;
1039 sky2->tx_tcpsum = 0;
1040 sky2->tx_last_mss = 0;
1041
9b289c33 1042 le = get_tx_le(sky2, &sky2->tx_prod);
88f5f0ca
SH		 1043 le->addr = 0;
1044 le->opcode = OP_ADDR64 | HW_OWNER;
5dce95e5 1045 sky2->tx_last_upper = 0;
88f5f0ca
SH		 1046}
1047
290d4de5
SH		 1048/* Update chip's next pointer */
1049static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
cd28ab6a 1050{
50432cb5 1051 /* Make sure write' to descriptors are complete before we tell hardware */
762c2de2 1052 wmb();
50432cb5
SH		 1053 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
1054
1055 /* Synchronize I/O on since next processor may write to tail */
1056 mmiowb();
cd28ab6a
SH		 1057}
1058
793b883e 1059
cd28ab6a
SH		 1060static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
1061{
1062 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
cb5d9547 1063 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
291ea614 1064 le->ctrl = 0;
cd28ab6a
SH		 1065 return le;
1066}
1067
14d0263f
SH		 1068/* Build description to hardware for one receive segment */
1069static void sky2_rx_add(struct sky2_port *sky2, u8 op,
1070 dma_addr_t map, unsigned len)
cd28ab6a
SH		 1071{
1072 struct sky2_rx_le *le;
1073
86c6887e 1074 if (sizeof(dma_addr_t) > sizeof(u32)) {
cd28ab6a 1075 le = sky2_next_rx(sky2);
86c6887e 1076 le->addr = cpu_to_le32(upper_32_bits(map));
cd28ab6a
SH		 1077 le->opcode = OP_ADDR64 | HW_OWNER;
1078 }
793b883e 1079
cd28ab6a 1080 le = sky2_next_rx(sky2);
d6e74b6b 1081 le->addr = cpu_to_le32(lower_32_bits(map));
734d1868 1082 le->length = cpu_to_le16(len);
14d0263f 1083 le->opcode = op | HW_OWNER;
cd28ab6a
SH		 1084}
1085
14d0263f
SH		 1086/* Build description to hardware for one possibly fragmented skb */
1087static void sky2_rx_submit(struct sky2_port *sky2,
1088 const struct rx_ring_info *re)
1089{
1090 int i;
1091
1092 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
1093
1094 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
1095 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
1096}
1097
1098
454e6cb6 1099static int sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
14d0263f
SH		 1100 unsigned size)
1101{
1102 struct sk_buff *skb = re->skb;
1103 int i;
1104
1105 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
3fbd9187 1106 if (pci_dma_mapping_error(pdev, re->data_addr))
1107 goto mapping_error;
454e6cb6 1108
14d0263f
SH		 1109 pci_unmap_len_set(re, data_size, size);
1110
3fbd9187 1111 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1112 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1113
1114 re->frag_addr[i] = pci_map_page(pdev, frag->page,
1115 frag->page_offset,
1116 frag->size,
14d0263f 1117 PCI_DMA_FROMDEVICE);
3fbd9187 1118
1119 if (pci_dma_mapping_error(pdev, re->frag_addr[i]))
1120 goto map_page_error;
1121 }
454e6cb6 1122 return 0;
3fbd9187 1123
1124map_page_error:
1125 while (--i >= 0) {
1126 pci_unmap_page(pdev, re->frag_addr[i],
1127 skb_shinfo(skb)->frags[i].size,
1128 PCI_DMA_FROMDEVICE);
1129 }
1130
1131 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
1132 PCI_DMA_FROMDEVICE);
1133
1134mapping_error:
1135 if (net_ratelimit())
1136 dev_warn(&pdev->dev, "%s: rx mapping error\n",
1137 skb->dev->name);
1138 return -EIO;
14d0263f
SH		 1139}
1140
1141static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1142{
1143 struct sk_buff *skb = re->skb;
1144 int i;
1145
1146 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
1147 PCI_DMA_FROMDEVICE);
1148
1149 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1150 pci_unmap_page(pdev, re->frag_addr[i],
1151 skb_shinfo(skb)->frags[i].size,
1152 PCI_DMA_FROMDEVICE);
1153}
793b883e 1154
cd28ab6a
SH		 1155/* Tell chip where to start receive checksum.
1156 * Actually has two checksums, but set both same to avoid possible byte
1157 * order problems.
1158 */
793b883e 1159static void rx_set_checksum(struct sky2_port *sky2)
cd28ab6a 1160{
ea76e635 1161 struct sky2_rx_le *le = sky2_next_rx(sky2);
793b883e 1162
ea76e635
SH		 1163 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1164 le->ctrl = 0;
1165 le->opcode = OP_TCPSTART | HW_OWNER;
cd28ab6a 1166
ea76e635
SH		 1167 sky2_write32(sky2->hw,
1168 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
0ea065e5
SH		 1169 (sky2->flags & SKY2_FLAG_RX_CHECKSUM)
1170 ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
cd28ab6a
SH		 1171}
1172
6b1a3aef 1173/*
1174 * The RX Stop command will not work for Yukon-2 if the BMU does not
1175 * reach the end of packet and since we can't make sure that we have
1176 * incoming data, we must reset the BMU while it is not doing a DMA
1177 * transfer. Since it is possible that the RX path is still active,
1178 * the RX RAM buffer will be stopped first, so any possible incoming
1179 * data will not trigger a DMA. After the RAM buffer is stopped, the
1180 * BMU is polled until any DMA in progress is ended and only then it
1181 * will be reset.
1182 */
1183static void sky2_rx_stop(struct sky2_port *sky2)
1184{
1185 struct sky2_hw *hw = sky2->hw;
1186 unsigned rxq = rxqaddr[sky2->port];
1187 int i;
1188
1189 /* disable the RAM Buffer receive queue */
1190 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1191
1192 for (i = 0; i < 0xffff; i++)
1193 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1194 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1195 goto stopped;
1196
1197 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
1198 sky2->netdev->name);
1199stopped:
1200 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1201
1202 /* reset the Rx prefetch unit */
1203 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
3d1454dd 1204 mmiowb();
6b1a3aef 1205}
793b883e 1206
d571b694 1207/* Clean out receive buffer area, assumes receiver hardware stopped */
cd28ab6a
SH		 1208static void sky2_rx_clean(struct sky2_port *sky2)
1209{
1210 unsigned i;
1211
1212 memset(sky2->rx_le, 0, RX_LE_BYTES);
793b883e 1213 for (i = 0; i < sky2->rx_pending; i++) {
291ea614 1214 struct rx_ring_info *re = sky2->rx_ring + i;
cd28ab6a
SH		 1215
1216 if (re->skb) {
14d0263f 1217 sky2_rx_unmap_skb(sky2->hw->pdev, re);
cd28ab6a
SH		 1218 kfree_skb(re->skb);
1219 re->skb = NULL;
1220 }
1221 }
1222}
1223
ef743d33 1224/* Basic MII support */
1225static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1226{
1227 struct mii_ioctl_data *data = if_mii(ifr);
1228 struct sky2_port *sky2 = netdev_priv(dev);
1229 struct sky2_hw *hw = sky2->hw;
1230 int err = -EOPNOTSUPP;
1231
1232 if (!netif_running(dev))
1233 return -ENODEV; /* Phy still in reset */
1234
d89e1343 1235 switch (cmd) {
ef743d33 1236 case SIOCGMIIPHY:
1237 data->phy_id = PHY_ADDR_MARV;
1238
1239 /* fallthru */
1240 case SIOCGMIIREG: {
1241 u16 val = 0;
91c86df5 1242
e07b1aa8 1243 spin_lock_bh(&sky2->phy_lock);
ef743d33 1244 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
e07b1aa8 1245 spin_unlock_bh(&sky2->phy_lock);
91c86df5 1246
ef743d33 1247 data->val_out = val;
1248 break;
1249 }
1250
1251 case SIOCSMIIREG:
e07b1aa8 1252 spin_lock_bh(&sky2->phy_lock);
ef743d33 1253 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1254 data->val_in);
e07b1aa8 1255 spin_unlock_bh(&sky2->phy_lock);
ef743d33 1256 break;
1257 }
1258 return err;
1259}
1260
d1f13708 1261#ifdef SKY2_VLAN_TAG_USED
d494eacd 1262static void sky2_set_vlan_mode(struct sky2_hw *hw, u16 port, bool onoff)
d1f13708 1263{
d494eacd 1264 if (onoff) {
3d4e66f5
SH		 1265 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1266 RX_VLAN_STRIP_ON);
1267 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1268 TX_VLAN_TAG_ON);
1269 } else {
1270 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1271 RX_VLAN_STRIP_OFF);
1272 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1273 TX_VLAN_TAG_OFF);
1274 }
d494eacd
SH		 1275}
1276
1277static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
1278{
1279 struct sky2_port *sky2 = netdev_priv(dev);
1280 struct sky2_hw *hw = sky2->hw;
1281 u16 port = sky2->port;
1282
1283 netif_tx_lock_bh(dev);
1284 napi_disable(&hw->napi);
1285
1286 sky2->vlgrp = grp;
1287 sky2_set_vlan_mode(hw, port, grp != NULL);
d1f13708 1288
d1d08d12 1289 sky2_read32(hw, B0_Y2_SP_LISR);
bea3348e 1290 napi_enable(&hw->napi);
2bb8c262 1291 netif_tx_unlock_bh(dev);
d1f13708 1292}
1293#endif
1294
bd1c6869
SH		 1295/* Amount of required worst case padding in rx buffer */
1296static inline unsigned sky2_rx_pad(const struct sky2_hw *hw)
1297{
1298 return (hw->flags & SKY2_HW_RAM_BUFFER) ? 8 : 2;
1299}
1300
82788c7a 1301/*
14d0263f
SH		 1302 * Allocate an skb for receiving. If the MTU is large enough
1303 * make the skb non-linear with a fragment list of pages.
82788c7a 1304 */
14d0263f 1305static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2)
82788c7a
SH		 1306{
1307 struct sk_buff *skb;
14d0263f 1308 int i;
82788c7a 1309
724b6942
SH		 1310 skb = netdev_alloc_skb(sky2->netdev,
1311 sky2->rx_data_size + sky2_rx_pad(sky2->hw));
bd1c6869
SH		 1312 if (!skb)
1313 goto nomem;
1314
39dbd958 1315 if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) {
f03b8654
SH		 1316 unsigned char *start;
1317 /*
1318 * Workaround for a bug in FIFO that cause hang
1319 * if the FIFO if the receive buffer is not 64 byte aligned.
1320 * The buffer returned from netdev_alloc_skb is
1321 * aligned except if slab debugging is enabled.
1322 */
f03b8654
SH		 1323 start = PTR_ALIGN(skb->data, 8);
1324 skb_reserve(skb, start - skb->data);
bd1c6869 1325 } else
f03b8654 1326 skb_reserve(skb, NET_IP_ALIGN);
14d0263f
SH		 1327
1328 for (i = 0; i < sky2->rx_nfrags; i++) {
1329 struct page *page = alloc_page(GFP_ATOMIC);
1330
1331 if (!page)
1332 goto free_partial;
1333 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
82788c7a
SH		 1334 }
1335
1336 return skb;
14d0263f
SH		 1337free_partial:
1338 kfree_skb(skb);
1339nomem:
1340 return NULL;
82788c7a
SH		 1341}
1342
55c9dd35
SH		 1343static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1344{
1345 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1346}
1347
cd28ab6a
SH		 1348/*
1349 * Allocate and setup receiver buffer pool.
14d0263f
SH		 1350 * Normal case this ends up creating one list element for skb
1351 * in the receive ring. Worst case if using large MTU and each
1352 * allocation falls on a different 64 bit region, that results
1353 * in 6 list elements per ring entry.
1354 * One element is used for checksum enable/disable, and one
1355 * extra to avoid wrap.
cd28ab6a 1356 */
6b1a3aef 1357static int sky2_rx_start(struct sky2_port *sky2)
cd28ab6a 1358{
6b1a3aef 1359 struct sky2_hw *hw = sky2->hw;
14d0263f 1360 struct rx_ring_info *re;
6b1a3aef 1361 unsigned rxq = rxqaddr[sky2->port];
5f06eba4 1362 unsigned i, size, thresh;
cd28ab6a 1363
6b1a3aef 1364 sky2->rx_put = sky2->rx_next = 0;
af4ed7e6 1365 sky2_qset(hw, rxq);
977bdf06 1366
c3905bc4
SH		 1367 /* On PCI express lowering the watermark gives better performance */
1368 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
1369 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1370
1371 /* These chips have no ram buffer?
1372 * MAC Rx RAM Read is controlled by hardware */
8df9a876 1373 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
8e95a202
JP		 1374 (hw->chip_rev == CHIP_REV_YU_EC_U_A1 ||
1375 hw->chip_rev == CHIP_REV_YU_EC_U_B0))
f449c7c1 1376 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
977bdf06 1377
6b1a3aef 1378 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1379
ea76e635
SH		 1380 if (!(hw->flags & SKY2_HW_NEW_LE))
1381 rx_set_checksum(sky2);
14d0263f
SH		 1382
1383 /* Space needed for frame data + headers rounded up */
f957da2a 1384 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
14d0263f
SH		 1385
1386 /* Stopping point for hardware truncation */
1387 thresh = (size - 8) / sizeof(u32);
1388
5f06eba4 1389 sky2->rx_nfrags = size >> PAGE_SHIFT;
14d0263f
SH		 1390 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1391
5f06eba4
SH		 1392 /* Compute residue after pages */
1393 size -= sky2->rx_nfrags << PAGE_SHIFT;
14d0263f 1394
5f06eba4
SH		 1395 /* Optimize to handle small packets and headers */
1396 if (size < copybreak)
1397 size = copybreak;
1398 if (size < ETH_HLEN)
1399 size = ETH_HLEN;
14d0263f 1400
14d0263f
SH		 1401 sky2->rx_data_size = size;
1402
1403 /* Fill Rx ring */
793b883e 1404 for (i = 0; i < sky2->rx_pending; i++) {
14d0263f 1405 re = sky2->rx_ring + i;
cd28ab6a 1406
14d0263f 1407 re->skb = sky2_rx_alloc(sky2);
cd28ab6a
SH		 1408 if (!re->skb)
1409 goto nomem;
1410
454e6cb6
SH		 1411 if (sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size)) {
1412 dev_kfree_skb(re->skb);
1413 re->skb = NULL;
1414 goto nomem;
1415 }
1416
14d0263f 1417 sky2_rx_submit(sky2, re);
cd28ab6a
SH		 1418 }
1419
a1433ac4
SH		 1420 /*
1421 * The receiver hangs if it receives frames larger than the
1422 * packet buffer. As a workaround, truncate oversize frames, but
1423 * the register is limited to 9 bits, so if you do frames > 2052
1424 * you better get the MTU right!
1425 */
a1433ac4
SH		 1426 if (thresh > 0x1ff)
1427 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1428 else {
1429 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1430 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1431 }
1432
6b1a3aef 1433 /* Tell chip about available buffers */
55c9dd35 1434 sky2_rx_update(sky2, rxq);
877c8570
SH		 1435
1436 if (hw->chip_id == CHIP_ID_YUKON_EX ||
1437 hw->chip_id == CHIP_ID_YUKON_SUPR) {
1438 /*
1439 * Disable flushing of non ASF packets;
1440 * must be done after initializing the BMUs;
1441 * drivers without ASF support should do this too, otherwise
1442 * it may happen that they cannot run on ASF devices;
1443 * remember that the MAC FIFO isn't reset during initialization.
1444 */
1445 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_MACSEC_FLUSH_OFF);
1446 }
1447
1448 if (hw->chip_id >= CHIP_ID_YUKON_SUPR) {
1449 /* Enable RX Home Address & Routing Header checksum fix */
1450 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_FL_CTRL),
1451 RX_IPV6_SA_MOB_ENA | RX_IPV6_DA_MOB_ENA);
1452
1453 /* Enable TX Home Address & Routing Header checksum fix */
1454 sky2_write32(hw, Q_ADDR(txqaddr[sky2->port], Q_TEST),
1455 TBMU_TEST_HOME_ADD_FIX_EN | TBMU_TEST_ROUTING_ADD_FIX_EN);
1456 }
1457
1458
1459
cd28ab6a
SH		 1460 return 0;
1461nomem:
1462 sky2_rx_clean(sky2);
1463 return -ENOMEM;
1464}
1465
90bbebb4
MM		 1466static int sky2_alloc_buffers(struct sky2_port *sky2)
1467{
1468 struct sky2_hw *hw = sky2->hw;
1469
1470 /* must be power of 2 */
1471 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1472 sky2->tx_ring_size *
1473 sizeof(struct sky2_tx_le),
1474 &sky2->tx_le_map);
1475 if (!sky2->tx_le)
1476 goto nomem;
1477
1478 sky2->tx_ring = kcalloc(sky2->tx_ring_size, sizeof(struct tx_ring_info),
1479 GFP_KERNEL);
1480 if (!sky2->tx_ring)
1481 goto nomem;
1482
1483 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1484 &sky2->rx_le_map);
1485 if (!sky2->rx_le)
1486 goto nomem;
1487 memset(sky2->rx_le, 0, RX_LE_BYTES);
1488
1489 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1490 GFP_KERNEL);
1491 if (!sky2->rx_ring)
1492 goto nomem;
1493
1494 return 0;
1495nomem:
1496 return -ENOMEM;
1497}
1498
1499static void sky2_free_buffers(struct sky2_port *sky2)
1500{
1501 struct sky2_hw *hw = sky2->hw;
1502
1503 if (sky2->rx_le) {
1504 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1505 sky2->rx_le, sky2->rx_le_map);
1506 sky2->rx_le = NULL;
1507 }
1508 if (sky2->tx_le) {
1509 pci_free_consistent(hw->pdev,
1510 sky2->tx_ring_size * sizeof(struct sky2_tx_le),
1511 sky2->tx_le, sky2->tx_le_map);
1512 sky2->tx_le = NULL;
1513 }
1514 kfree(sky2->tx_ring);
1515 kfree(sky2->rx_ring);
1516
1517 sky2->tx_ring = NULL;
1518 sky2->rx_ring = NULL;
1519}
1520
cd28ab6a
SH		 1521/* Bring up network interface. */
1522static int sky2_up(struct net_device *dev)
1523{
1524 struct sky2_port *sky2 = netdev_priv(dev);
1525 struct sky2_hw *hw = sky2->hw;
1526 unsigned port = sky2->port;
e0c28116 1527 u32 imask, ramsize;
90bbebb4 1528 int cap, err;
843a46f4 1529 struct net_device *otherdev = hw->dev[sky2->port^1];
cd28ab6a 1530
ee7abb04
SH		 1531 /*
1532 * On dual port PCI-X card, there is an problem where status
1533 * can be received out of order due to split transactions
843a46f4 1534 */
ee7abb04
SH		 1535 if (otherdev && netif_running(otherdev) &&
1536 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
ee7abb04
SH		 1537 u16 cmd;
1538
b32f40c4 1539 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
ee7abb04 1540 cmd &= ~PCI_X_CMD_MAX_SPLIT;
b32f40c4
SH		 1541 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1542
ee7abb04 1543 }
843a46f4 1544
55d7b4e6
SH		 1545 netif_carrier_off(dev);
1546
90bbebb4
MM		 1547 err = sky2_alloc_buffers(sky2);
1548 if (err)
cd28ab6a 1549 goto err_out;
88f5f0ca
SH		 1550
1551 tx_init(sky2);
cd28ab6a 1552
cd28ab6a
SH		 1553 sky2_mac_init(hw, port);
1554
e0c28116
SH		 1555 /* Register is number of 4K blocks on internal RAM buffer. */
1556 ramsize = sky2_read8(hw, B2_E_0) * 4;
1557 if (ramsize > 0) {
67712901 1558 u32 rxspace;
cd28ab6a 1559
e0c28116 1560 pr_debug(PFX "%s: ram buffer %dK\n", dev->name, ramsize);
67712901
SH		 1561 if (ramsize < 16)
1562 rxspace = ramsize / 2;
1563 else
1564 rxspace = 8 + (2*(ramsize - 16))/3;
cd28ab6a 1565
67712901
SH		 1566 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1567 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1568
1569 /* Make sure SyncQ is disabled */
1570 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1571 RB_RST_SET);
1572 }
793b883e 1573
af4ed7e6 1574 sky2_qset(hw, txqaddr[port]);
5a5b1ea0 1575
69161611
SH		 1576 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1577 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1578 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1579
977bdf06 1580 /* Set almost empty threshold */
8e95a202
JP		 1581 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1582 hw->chip_rev == CHIP_REV_YU_EC_U_A0)
b628ed98 1583 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
5a5b1ea0 1584
6b1a3aef 1585 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
ee5f68fe 1586 sky2->tx_ring_size - 1);
cd28ab6a 1587
d494eacd
SH		 1588#ifdef SKY2_VLAN_TAG_USED
1589 sky2_set_vlan_mode(hw, port, sky2->vlgrp != NULL);
1590#endif
1591
6b1a3aef 1592 err = sky2_rx_start(sky2);
6de16237 1593 if (err)
cd28ab6a
SH		 1594 goto err_out;
1595
cd28ab6a 1596 /* Enable interrupts from phy/mac for port */
e07b1aa8 1597 imask = sky2_read32(hw, B0_IMSK);
f4ea431b 1598 imask |= portirq_msk[port];
e07b1aa8 1599 sky2_write32(hw, B0_IMSK, imask);
1fd82f3c 1600 sky2_read32(hw, B0_IMSK);
e07b1aa8 1601
a11da890
AD		 1602 if (netif_msg_ifup(sky2))
1603 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
af18d8b8 1604
cd28ab6a
SH		 1605 return 0;
1606
1607err_out:
90bbebb4 1608 sky2_free_buffers(sky2);
cd28ab6a
SH		 1609 return err;
1610}
1611
793b883e 1612/* Modular subtraction in ring */
ee5f68fe 1613static inline int tx_inuse(const struct sky2_port *sky2)
793b883e 1614{
ee5f68fe 1615 return (sky2->tx_prod - sky2->tx_cons) & (sky2->tx_ring_size - 1);
793b883e 1616}
cd28ab6a 1617
793b883e
SH		 1618/* Number of list elements available for next tx */
1619static inline int tx_avail(const struct sky2_port *sky2)
cd28ab6a 1620{
ee5f68fe 1621 return sky2->tx_pending - tx_inuse(sky2);
cd28ab6a
SH		 1622}
1623
793b883e 1624/* Estimate of number of transmit list elements required */
28bd181a 1625static unsigned tx_le_req(const struct sk_buff *skb)
cd28ab6a 1626{
793b883e
SH		 1627 unsigned count;
1628
07e31637
SH		 1629 count = (skb_shinfo(skb)->nr_frags + 1)
1630 * (sizeof(dma_addr_t) / sizeof(u32));
793b883e 1631
89114afd 1632 if (skb_is_gso(skb))
793b883e 1633 ++count;
07e31637
SH		 1634 else if (sizeof(dma_addr_t) == sizeof(u32))
1635 ++count; /* possible vlan */
793b883e 1636
84fa7933 1637 if (skb->ip_summed == CHECKSUM_PARTIAL)
793b883e
SH		 1638 ++count;
1639
1640 return count;
cd28ab6a
SH		 1641}
1642
f6815077 1643static void sky2_tx_unmap(struct pci_dev *pdev, struct tx_ring_info *re)
6b84daca
SH		 1644{
1645 if (re->flags & TX_MAP_SINGLE)
1646 pci_unmap_single(pdev, pci_unmap_addr(re, mapaddr),
1647 pci_unmap_len(re, maplen),
1648 PCI_DMA_TODEVICE);
1649 else if (re->flags & TX_MAP_PAGE)
1650 pci_unmap_page(pdev, pci_unmap_addr(re, mapaddr),
1651 pci_unmap_len(re, maplen),
1652 PCI_DMA_TODEVICE);
f6815077 1653 re->flags = 0;
6b84daca
SH		 1654}
1655
793b883e
SH		 1656/*
1657 * Put one packet in ring for transmit.
1658 * A single packet can generate multiple list elements, and
1659 * the number of ring elements will probably be less than the number
1660 * of list elements used.
1661 */
61357325
SH		 1662static netdev_tx_t sky2_xmit_frame(struct sk_buff *skb,
1663 struct net_device *dev)
cd28ab6a
SH		 1664{
1665 struct sky2_port *sky2 = netdev_priv(dev);
1666 struct sky2_hw *hw = sky2->hw;
d1f13708 1667 struct sky2_tx_le *le = NULL;
6cdbbdf3 1668 struct tx_ring_info *re;
9b289c33 1669 unsigned i, len;
cd28ab6a 1670 dma_addr_t mapping;
5dce95e5
SH		 1671 u32 upper;
1672 u16 slot;
cd28ab6a
SH		 1673 u16 mss;
1674 u8 ctrl;
1675
2bb8c262
SH		 1676 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1677 return NETDEV_TX_BUSY;
cd28ab6a 1678
cd28ab6a
SH		 1679 len = skb_headlen(skb);
1680 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
793b883e 1681
454e6cb6
SH		 1682 if (pci_dma_mapping_error(hw->pdev, mapping))
1683 goto mapping_error;
1684
9b289c33 1685 slot = sky2->tx_prod;
454e6cb6
SH		 1686 if (unlikely(netif_msg_tx_queued(sky2)))
1687 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
9b289c33 1688 dev->name, slot, skb->len);
454e6cb6 1689
86c6887e 1690 /* Send high bits if needed */
5dce95e5
SH		 1691 upper = upper_32_bits(mapping);
1692 if (upper != sky2->tx_last_upper) {
9b289c33 1693 le = get_tx_le(sky2, &slot);
5dce95e5
SH		 1694 le->addr = cpu_to_le32(upper);
1695 sky2->tx_last_upper = upper;
793b883e 1696 le->opcode = OP_ADDR64 | HW_OWNER;
793b883e 1697 }
cd28ab6a
SH		 1698
1699 /* Check for TCP Segmentation Offload */
7967168c 1700 mss = skb_shinfo(skb)->gso_size;
793b883e 1701 if (mss != 0) {
ea76e635
SH		 1702
1703 if (!(hw->flags & SKY2_HW_NEW_LE))
69161611
SH		 1704 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1705
1706 if (mss != sky2->tx_last_mss) {
9b289c33 1707 le = get_tx_le(sky2, &slot);
69161611 1708 le->addr = cpu_to_le32(mss);
ea76e635
SH		 1709
1710 if (hw->flags & SKY2_HW_NEW_LE)
69161611
SH		 1711 le->opcode = OP_MSS | HW_OWNER;
1712 else
1713 le->opcode = OP_LRGLEN | HW_OWNER;
e07560cd 1714 sky2->tx_last_mss = mss;
1715 }
cd28ab6a
SH		 1716 }
1717
cd28ab6a 1718 ctrl = 0;
d1f13708 1719#ifdef SKY2_VLAN_TAG_USED
1720 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1721 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1722 if (!le) {
9b289c33 1723 le = get_tx_le(sky2, &slot);
f65b138c 1724 le->addr = 0;
d1f13708 1725 le->opcode = OP_VLAN|HW_OWNER;
d1f13708 1726 } else
1727 le->opcode |= OP_VLAN;
1728 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1729 ctrl |= INS_VLAN;
1730 }
1731#endif
1732
1733 /* Handle TCP checksum offload */
84fa7933 1734 if (skb->ip_summed == CHECKSUM_PARTIAL) {
69161611 1735 /* On Yukon EX (some versions) encoding change. */
ea76e635 1736 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
69161611
SH		 1737 ctrl |= CALSUM; /* auto checksum */
1738 else {
1739 const unsigned offset = skb_transport_offset(skb);
1740 u32 tcpsum;
1741
1742 tcpsum = offset << 16; /* sum start */
1743 tcpsum |= offset + skb->csum_offset; /* sum write */
1744
1745 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1746 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1747 ctrl |= UDPTCP;
1748
1749 if (tcpsum != sky2->tx_tcpsum) {
1750 sky2->tx_tcpsum = tcpsum;
1751
9b289c33 1752 le = get_tx_le(sky2, &slot);
69161611
SH		 1753 le->addr = cpu_to_le32(tcpsum);
1754 le->length = 0; /* initial checksum value */
1755 le->ctrl = 1; /* one packet */
1756 le->opcode = OP_TCPLISW | HW_OWNER;
1757 }
1d179332 1758 }
cd28ab6a
SH		 1759 }
1760
6b84daca
SH		 1761 re = sky2->tx_ring + slot;
1762 re->flags = TX_MAP_SINGLE;
1763 pci_unmap_addr_set(re, mapaddr, mapping);
1764 pci_unmap_len_set(re, maplen, len);
1765
9b289c33 1766 le = get_tx_le(sky2, &slot);
d6e74b6b 1767 le->addr = cpu_to_le32(lower_32_bits(mapping));
cd28ab6a
SH		 1768 le->length = cpu_to_le16(len);
1769 le->ctrl = ctrl;
793b883e 1770 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
cd28ab6a 1771
cd28ab6a
SH		 1772
1773 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
291ea614 1774 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
cd28ab6a
SH		 1775
1776 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1777 frag->size, PCI_DMA_TODEVICE);
86c6887e 1778
454e6cb6
SH		 1779 if (pci_dma_mapping_error(hw->pdev, mapping))
1780 goto mapping_unwind;
1781
5dce95e5
SH		 1782 upper = upper_32_bits(mapping);
1783 if (upper != sky2->tx_last_upper) {
9b289c33 1784 le = get_tx_le(sky2, &slot);
5dce95e5
SH		 1785 le->addr = cpu_to_le32(upper);
1786 sky2->tx_last_upper = upper;
793b883e 1787 le->opcode = OP_ADDR64 | HW_OWNER;
cd28ab6a
SH		 1788 }
1789
6b84daca
SH		 1790 re = sky2->tx_ring + slot;
1791 re->flags = TX_MAP_PAGE;
1792 pci_unmap_addr_set(re, mapaddr, mapping);
1793 pci_unmap_len_set(re, maplen, frag->size);
1794
9b289c33 1795 le = get_tx_le(sky2, &slot);
d6e74b6b 1796 le->addr = cpu_to_le32(lower_32_bits(mapping));
cd28ab6a
SH		 1797 le->length = cpu_to_le16(frag->size);
1798 le->ctrl = ctrl;
793b883e 1799 le->opcode = OP_BUFFER | HW_OWNER;
cd28ab6a 1800 }
6cdbbdf3 1801
6b84daca 1802 re->skb = skb;
cd28ab6a
SH		 1803 le->ctrl |= EOP;
1804
9b289c33
MM		 1805 sky2->tx_prod = slot;
1806
97bda706 1807 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1808 netif_stop_queue(dev);
b19666d9 1809
290d4de5 1810 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
cd28ab6a 1811
cd28ab6a 1812 return NETDEV_TX_OK;
454e6cb6
SH		 1813
1814mapping_unwind:
ee5f68fe 1815 for (i = sky2->tx_prod; i != slot; i = RING_NEXT(i, sky2->tx_ring_size)) {
454e6cb6
SH		 1816 re = sky2->tx_ring + i;
1817
6b84daca 1818 sky2_tx_unmap(hw->pdev, re);
454e6cb6
SH		 1819 }
1820
454e6cb6
SH		 1821mapping_error:
1822 if (net_ratelimit())
1823 dev_warn(&hw->pdev->dev, "%s: tx mapping error\n", dev->name);
1824 dev_kfree_skb(skb);
1825 return NETDEV_TX_OK;
cd28ab6a
SH		 1826}
1827
cd28ab6a 1828/*
793b883e
SH		 1829 * Free ring elements from starting at tx_cons until "done"
1830 *
481cea4a
SH		 1831 * NB:
1832 * 1. The hardware will tell us about partial completion of multi-part
291ea614 1833 * buffers so make sure not to free skb to early.
481cea4a
SH		 1834 * 2. This may run in parallel start_xmit because the it only
1835 * looks at the tail of the queue of FIFO (tx_cons), not
1836 * the head (tx_prod)
cd28ab6a 1837 */
d11c13e7 1838static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
cd28ab6a 1839{
d11c13e7 1840 struct net_device *dev = sky2->netdev;
291ea614 1841 unsigned idx;
cd28ab6a 1842
ee5f68fe 1843 BUG_ON(done >= sky2->tx_ring_size);
2224795d 1844
291ea614 1845 for (idx = sky2->tx_cons; idx != done;
ee5f68fe 1846 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
291ea614 1847 struct tx_ring_info *re = sky2->tx_ring + idx;
6b84daca 1848 struct sk_buff *skb = re->skb;
291ea614 1849
6b84daca 1850 sky2_tx_unmap(sky2->hw->pdev, re);
bd1c6869 1851
6b84daca 1852 if (skb) {
291ea614
SH		 1853 if (unlikely(netif_msg_tx_done(sky2)))
1854 printk(KERN_DEBUG "%s: tx done %u\n",
1855 dev->name, idx);
3cf26753 1856
7138a0f5 1857 dev->stats.tx_packets++;
bd1c6869
SH		 1858 dev->stats.tx_bytes += skb->len;
1859
f6815077 1860 re->skb = NULL;
724b6942 1861 dev_kfree_skb_any(skb);
2bf56fe2 1862
ee5f68fe 1863 sky2->tx_next = RING_NEXT(idx, sky2->tx_ring_size);
cd28ab6a 1864 }
793b883e 1865 }
793b883e 1866
291ea614 1867 sky2->tx_cons = idx;
50432cb5
SH		 1868 smp_mb();
1869
9db2f1be
JP		 1870 /* Wake unless it's detached, and called e.g. from sky2_down() */
1871 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4 && netif_device_present(dev))
cd28ab6a 1872 netif_wake_queue(dev);
cd28ab6a
SH		 1873}
1874
264bb4fa 1875static void sky2_tx_reset(struct sky2_hw *hw, unsigned port)
a510996b 1876{
a510996b
MM		 1877 /* Disable Force Sync bit and Enable Alloc bit */
1878 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1879 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1880
1881 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1882 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1883 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1884
1885 /* Reset the PCI FIFO of the async Tx queue */
1886 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1887 BMU_RST_SET | BMU_FIFO_RST);
1888
1889 /* Reset the Tx prefetch units */
1890 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1891 PREF_UNIT_RST_SET);
1892
1893 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1894 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1895}
1896
cd28ab6a
SH		 1897/* Network shutdown */
1898static int sky2_down(struct net_device *dev)
1899{
1900 struct sky2_port *sky2 = netdev_priv(dev);
1901 struct sky2_hw *hw = sky2->hw;
1902 unsigned port = sky2->port;
1903 u16 ctrl;
e07b1aa8 1904 u32 imask;
cd28ab6a 1905
1b537565
SH		 1906 /* Never really got started! */
1907 if (!sky2->tx_le)
1908 return 0;
1909
cd28ab6a
SH		 1910 if (netif_msg_ifdown(sky2))
1911 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1912
d104acaf
SH		 1913 /* Force flow control off */
1914 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
793b883e 1915
cd28ab6a
SH		 1916 /* Stop transmitter */
1917 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1918 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1919
1920 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
793b883e 1921 RB_RST_SET | RB_DIS_OP_MD);
cd28ab6a
SH		 1922
1923 ctrl = gma_read16(hw, port, GM_GP_CTRL);
793b883e 1924 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
cd28ab6a
SH		 1925 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1926
1927 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1928
1929 /* Workaround shared GMAC reset */
8e95a202
JP		 1930 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 &&
1931 port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
cd28ab6a
SH		 1932 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1933
cd28ab6a 1934 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
cd28ab6a 1935
6c83504f
SH		 1936 /* Force any delayed status interrrupt and NAPI */
1937 sky2_write32(hw, STAT_LEV_TIMER_CNT, 0);
1938 sky2_write32(hw, STAT_TX_TIMER_CNT, 0);
1939 sky2_write32(hw, STAT_ISR_TIMER_CNT, 0);
1940 sky2_read8(hw, STAT_ISR_TIMER_CTRL);
1941
a947a39d
MM		 1942 sky2_rx_stop(sky2);
1943
1944 /* Disable port IRQ */
1945 imask = sky2_read32(hw, B0_IMSK);
1946 imask &= ~portirq_msk[port];
1947 sky2_write32(hw, B0_IMSK, imask);
1948 sky2_read32(hw, B0_IMSK);
1949
6c83504f
SH		 1950 synchronize_irq(hw->pdev->irq);
1951 napi_synchronize(&hw->napi);
1952
0da6d7b3 1953 spin_lock_bh(&sky2->phy_lock);
b96936da 1954 sky2_phy_power_down(hw, port);
0da6d7b3 1955 spin_unlock_bh(&sky2->phy_lock);
d3bcfbeb 1956
264bb4fa
MM		 1957 sky2_tx_reset(hw, port);
1958
481cea4a
SH		 1959 /* Free any pending frames stuck in HW queue */
1960 sky2_tx_complete(sky2, sky2->tx_prod);
1961
cd28ab6a
SH		 1962 sky2_rx_clean(sky2);
1963
90bbebb4 1964 sky2_free_buffers(sky2);
1b537565 1965
cd28ab6a
SH		 1966 return 0;
1967}
1968
1969static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1970{
ea76e635 1971 if (hw->flags & SKY2_HW_FIBRE_PHY)
793b883e
SH		 1972 return SPEED_1000;
1973
05745c4a
SH		 1974 if (!(hw->flags & SKY2_HW_GIGABIT)) {
1975 if (aux & PHY_M_PS_SPEED_100)
1976 return SPEED_100;
1977 else
1978 return SPEED_10;
1979 }
cd28ab6a
SH		 1980
1981 switch (aux & PHY_M_PS_SPEED_MSK) {
1982 case PHY_M_PS_SPEED_1000:
1983 return SPEED_1000;
1984 case PHY_M_PS_SPEED_100:
1985 return SPEED_100;
1986 default:
1987 return SPEED_10;
1988 }
1989}
1990
1991static void sky2_link_up(struct sky2_port *sky2)
1992{
1993 struct sky2_hw *hw = sky2->hw;
1994 unsigned port = sky2->port;
1995 u16 reg;
16ad91e1
SH		 1996 static const char *fc_name[] = {
1997 [FC_NONE] = "none",
1998 [FC_TX] = "tx",
1999 [FC_RX] = "rx",
2000 [FC_BOTH] = "both",
2001 };
cd28ab6a 2002
cd28ab6a 2003 /* enable Rx/Tx */
2eaba1a2 2004 reg = gma_read16(hw, port, GM_GP_CTRL);
cd28ab6a
SH		 2005 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
2006 gma_write16(hw, port, GM_GP_CTRL, reg);
cd28ab6a
SH		 2007
2008 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
2009
2010 netif_carrier_on(sky2->netdev);
cd28ab6a 2011
75e80683 2012 mod_timer(&hw->watchdog_timer, jiffies + 1);
32c2c300 2013
cd28ab6a 2014 /* Turn on link LED */
793b883e 2015 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
cd28ab6a
SH		 2016 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
2017
2018 if (netif_msg_link(sky2))
2019 printk(KERN_INFO PFX
d571b694 2020 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
cd28ab6a
SH		 2021 sky2->netdev->name, sky2->speed,
2022 sky2->duplex == DUPLEX_FULL ? "full" : "half",
16ad91e1 2023 fc_name[sky2->flow_status]);
cd28ab6a
SH		 2024}
2025
2026static void sky2_link_down(struct sky2_port *sky2)
2027{
2028 struct sky2_hw *hw = sky2->hw;
2029 unsigned port = sky2->port;
2030 u16 reg;
2031
2032 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
2033
2034 reg = gma_read16(hw, port, GM_GP_CTRL);
2035 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
2036 gma_write16(hw, port, GM_GP_CTRL, reg);
cd28ab6a 2037
cd28ab6a 2038 netif_carrier_off(sky2->netdev);
cd28ab6a 2039
809aaaae 2040 /* Turn off link LED */
cd28ab6a
SH		 2041 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
2042
2043 if (netif_msg_link(sky2))
2044 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
2eaba1a2 2045
cd28ab6a
SH		 2046 sky2_phy_init(hw, port);
2047}
2048
16ad91e1
SH		 2049static enum flow_control sky2_flow(int rx, int tx)
2050{
2051 if (rx)
2052 return tx ? FC_BOTH : FC_RX;
2053 else
2054 return tx ? FC_TX : FC_NONE;
2055}
2056
793b883e
SH		 2057static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
2058{
2059 struct sky2_hw *hw = sky2->hw;
2060 unsigned port = sky2->port;
da4c1ff4 2061 u16 advert, lpa;
793b883e 2062
da4c1ff4 2063 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
793b883e 2064 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
793b883e
SH		 2065 if (lpa & PHY_M_AN_RF) {
2066 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
2067 return -1;
2068 }
2069
793b883e
SH		 2070 if (!(aux & PHY_M_PS_SPDUP_RES)) {
2071 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
2072 sky2->netdev->name);
2073 return -1;
2074 }
2075
793b883e 2076 sky2->speed = sky2_phy_speed(hw, aux);
7c74ac1c 2077 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
793b883e 2078
da4c1ff4
SH		 2079 /* Since the pause result bits seem to in different positions on
2080 * different chips. look at registers.
2081 */
ea76e635 2082 if (hw->flags & SKY2_HW_FIBRE_PHY) {
da4c1ff4
SH		 2083 /* Shift for bits in fiber PHY */
2084 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
2085 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
2086
2087 if (advert & ADVERTISE_1000XPAUSE)
2088 advert |= ADVERTISE_PAUSE_CAP;
2089 if (advert & ADVERTISE_1000XPSE_ASYM)
2090 advert |= ADVERTISE_PAUSE_ASYM;
2091 if (lpa & LPA_1000XPAUSE)
2092 lpa |= LPA_PAUSE_CAP;
2093 if (lpa & LPA_1000XPAUSE_ASYM)
2094 lpa |= LPA_PAUSE_ASYM;
2095 }
793b883e 2096
da4c1ff4
SH		 2097 sky2->flow_status = FC_NONE;
2098 if (advert & ADVERTISE_PAUSE_CAP) {
2099 if (lpa & LPA_PAUSE_CAP)
2100 sky2->flow_status = FC_BOTH;
2101 else if (advert & ADVERTISE_PAUSE_ASYM)
2102 sky2->flow_status = FC_RX;
2103 } else if (advert & ADVERTISE_PAUSE_ASYM) {
2104 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
2105 sky2->flow_status = FC_TX;
2106 }
793b883e 2107
8e95a202
JP		 2108 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000 &&
2109 !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
16ad91e1 2110 sky2->flow_status = FC_NONE;
2eaba1a2 2111
da4c1ff4 2112 if (sky2->flow_status & FC_TX)
793b883e
SH		 2113 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2114 else
2115 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2116
2117 return 0;
2118}
cd28ab6a 2119
e07b1aa8
SH		 2120/* Interrupt from PHY */
2121static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
cd28ab6a 2122{
e07b1aa8
SH		 2123 struct net_device *dev = hw->dev[port];
2124 struct sky2_port *sky2 = netdev_priv(dev);
cd28ab6a
SH		 2125 u16 istatus, phystat;
2126
ebc646f6
SH		 2127 if (!netif_running(dev))
2128 return;
2129
e07b1aa8
SH		 2130 spin_lock(&sky2->phy_lock);
2131 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2132 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2133
cd28ab6a
SH		 2134 if (netif_msg_intr(sky2))
2135 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
2136 sky2->netdev->name, istatus, phystat);
2137
0ea065e5 2138 if (istatus & PHY_M_IS_AN_COMPL) {
793b883e
SH		 2139 if (sky2_autoneg_done(sky2, phystat) == 0)
2140 sky2_link_up(sky2);
2141 goto out;
2142 }
cd28ab6a 2143
793b883e
SH		 2144 if (istatus & PHY_M_IS_LSP_CHANGE)
2145 sky2->speed = sky2_phy_speed(hw, phystat);
cd28ab6a 2146
793b883e
SH		 2147 if (istatus & PHY_M_IS_DUP_CHANGE)
2148 sky2->duplex =
2149 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
cd28ab6a 2150
793b883e
SH		 2151 if (istatus & PHY_M_IS_LST_CHANGE) {
2152 if (phystat & PHY_M_PS_LINK_UP)
cd28ab6a 2153 sky2_link_up(sky2);
793b883e
SH		 2154 else
2155 sky2_link_down(sky2);
cd28ab6a 2156 }
793b883e 2157out:
e07b1aa8 2158 spin_unlock(&sky2->phy_lock);
cd28ab6a
SH		 2159}
2160
0f5aac70
SH		 2161/* Special quick link interrupt (Yukon-2 Optima only) */
2162static void sky2_qlink_intr(struct sky2_hw *hw)
2163{
2164 struct sky2_port *sky2 = netdev_priv(hw->dev[0]);
2165 u32 imask;
2166 u16 phy;
2167
2168 /* disable irq */
2169 imask = sky2_read32(hw, B0_IMSK);
2170 imask &= ~Y2_IS_PHY_QLNK;
2171 sky2_write32(hw, B0_IMSK, imask);
2172
2173 /* reset PHY Link Detect */
2174 phy = sky2_pci_read16(hw, PSM_CONFIG_REG4);
a40ccc68 2175 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
0f5aac70 2176 sky2_pci_write16(hw, PSM_CONFIG_REG4, phy | 1);
a40ccc68 2177 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
0f5aac70
SH		 2178
2179 sky2_link_up(sky2);
2180}
2181
62335ab0 2182/* Transmit timeout is only called if we are running, carrier is up
302d1252
SH		 2183 * and tx queue is full (stopped).
2184 */
cd28ab6a
SH		 2185static void sky2_tx_timeout(struct net_device *dev)
2186{
2187 struct sky2_port *sky2 = netdev_priv(dev);
8cc048e3 2188 struct sky2_hw *hw = sky2->hw;
cd28ab6a
SH		 2189
2190 if (netif_msg_timer(sky2))
2191 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
2192
8f24664d 2193 printk(KERN_DEBUG PFX "%s: transmit ring %u .. %u report=%u done=%u\n",
62335ab0
SH		 2194 dev->name, sky2->tx_cons, sky2->tx_prod,
2195 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
2196 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
8f24664d 2197
81906791
SH		 2198 /* can't restart safely under softirq */
2199 schedule_work(&hw->restart_work);
cd28ab6a
SH		 2200}
2201
2202static int sky2_change_mtu(struct net_device *dev, int new_mtu)
2203{
6b1a3aef 2204 struct sky2_port *sky2 = netdev_priv(dev);
2205 struct sky2_hw *hw = sky2->hw;
b628ed98 2206 unsigned port = sky2->port;
6b1a3aef 2207 int err;
2208 u16 ctl, mode;
e07b1aa8 2209 u32 imask;
cd28ab6a
SH		 2210
2211 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2212 return -EINVAL;
2213
05745c4a
SH		 2214 if (new_mtu > ETH_DATA_LEN &&
2215 (hw->chip_id == CHIP_ID_YUKON_FE ||
2216 hw->chip_id == CHIP_ID_YUKON_FE_P))
d2adf4f6
SH		 2217 return -EINVAL;
2218
6b1a3aef 2219 if (!netif_running(dev)) {
2220 dev->mtu = new_mtu;
2221 return 0;
2222 }
2223
e07b1aa8 2224 imask = sky2_read32(hw, B0_IMSK);
6b1a3aef 2225 sky2_write32(hw, B0_IMSK, 0);
2226
018d1c66 2227 dev->trans_start = jiffies; /* prevent tx timeout */
2228 netif_stop_queue(dev);
bea3348e 2229 napi_disable(&hw->napi);
018d1c66 2230
e07b1aa8
SH		 2231 synchronize_irq(hw->pdev->irq);
2232
39dbd958 2233 if (!(hw->flags & SKY2_HW_RAM_BUFFER))
69161611 2234 sky2_set_tx_stfwd(hw, port);
b628ed98
SH		 2235
2236 ctl = gma_read16(hw, port, GM_GP_CTRL);
2237 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
6b1a3aef 2238 sky2_rx_stop(sky2);
2239 sky2_rx_clean(sky2);
cd28ab6a
SH		 2240
2241 dev->mtu = new_mtu;
14d0263f 2242
6b1a3aef 2243 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
2244 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
2245
2246 if (dev->mtu > ETH_DATA_LEN)
2247 mode |= GM_SMOD_JUMBO_ENA;
2248
b628ed98 2249 gma_write16(hw, port, GM_SERIAL_MODE, mode);
cd28ab6a 2250
b628ed98 2251 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
cd28ab6a 2252
6b1a3aef 2253 err = sky2_rx_start(sky2);
e07b1aa8 2254 sky2_write32(hw, B0_IMSK, imask);
018d1c66 2255
d1d08d12 2256 sky2_read32(hw, B0_Y2_SP_LISR);
bea3348e
SH		 2257 napi_enable(&hw->napi);
2258
1b537565
SH		 2259 if (err)
2260 dev_close(dev);
2261 else {
b628ed98 2262 gma_write16(hw, port, GM_GP_CTRL, ctl);
1b537565 2263
1b537565
SH		 2264 netif_wake_queue(dev);
2265 }
2266
cd28ab6a
SH		 2267 return err;
2268}
2269
14d0263f
SH		 2270/* For small just reuse existing skb for next receive */
2271static struct sk_buff *receive_copy(struct sky2_port *sky2,
2272 const struct rx_ring_info *re,
2273 unsigned length)
2274{
2275 struct sk_buff *skb;
2276
89d71a66 2277 skb = netdev_alloc_skb_ip_align(sky2->netdev, length);
14d0263f 2278 if (likely(skb)) {
14d0263f
SH		 2279 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2280 length, PCI_DMA_FROMDEVICE);
d626f62b 2281 skb_copy_from_linear_data(re->skb, skb->data, length);
14d0263f
SH		 2282 skb->ip_summed = re->skb->ip_summed;
2283 skb->csum = re->skb->csum;
2284 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2285 length, PCI_DMA_FROMDEVICE);
2286 re->skb->ip_summed = CHECKSUM_NONE;
489b10c1 2287 skb_put(skb, length);
14d0263f
SH		 2288 }
2289 return skb;
2290}
2291
2292/* Adjust length of skb with fragments to match received data */
2293static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2294 unsigned int length)
2295{
2296 int i, num_frags;
2297 unsigned int size;
2298
2299 /* put header into skb */
2300 size = min(length, hdr_space);
2301 skb->tail += size;
2302 skb->len += size;
2303 length -= size;
2304
2305 num_frags = skb_shinfo(skb)->nr_frags;
2306 for (i = 0; i < num_frags; i++) {
2307 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2308
2309 if (length == 0) {
2310 /* don't need this page */
2311 __free_page(frag->page);
2312 --skb_shinfo(skb)->nr_frags;
2313 } else {
2314 size = min(length, (unsigned) PAGE_SIZE);
2315
2316 frag->size = size;
2317 skb->data_len += size;
2318 skb->truesize += size;
2319 skb->len += size;
2320 length -= size;
2321 }
2322 }
2323}
2324
2325/* Normal packet - take skb from ring element and put in a new one */
2326static struct sk_buff *receive_new(struct sky2_port *sky2,
2327 struct rx_ring_info *re,
2328 unsigned int length)
2329{
3fbd9187 2330 struct sk_buff *skb;
2331 struct rx_ring_info nre;
14d0263f
SH		 2332 unsigned hdr_space = sky2->rx_data_size;
2333
3fbd9187 2334 nre.skb = sky2_rx_alloc(sky2);
2335 if (unlikely(!nre.skb))
2336 goto nobuf;
2337
2338 if (sky2_rx_map_skb(sky2->hw->pdev, &nre, hdr_space))
2339 goto nomap;
14d0263f
SH		 2340
2341 skb = re->skb;
2342 sky2_rx_unmap_skb(sky2->hw->pdev, re);
14d0263f 2343 prefetch(skb->data);
3fbd9187 2344 *re = nre;
14d0263f
SH		 2345
2346 if (skb_shinfo(skb)->nr_frags)
2347 skb_put_frags(skb, hdr_space, length);
2348 else
489b10c1 2349 skb_put(skb, length);
14d0263f 2350 return skb;
3fbd9187 2351
2352nomap:
2353 dev_kfree_skb(nre.skb);
2354nobuf:
2355 return NULL;
14d0263f
SH		 2356}
2357
cd28ab6a
SH		 2358/*
2359 * Receive one packet.
d571b694 2360 * For larger packets, get new buffer.
cd28ab6a 2361 */
497d7c86 2362static struct sk_buff *sky2_receive(struct net_device *dev,
cd28ab6a
SH		 2363 u16 length, u32 status)
2364{
497d7c86 2365 struct sky2_port *sky2 = netdev_priv(dev);
291ea614 2366 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
79e57d32 2367 struct sk_buff *skb = NULL;
d6532232
SH		 2368 u16 count = (status & GMR_FS_LEN) >> 16;
2369
2370#ifdef SKY2_VLAN_TAG_USED
2371 /* Account for vlan tag */
2372 if (sky2->vlgrp && (status & GMR_FS_VLAN))
2373 count -= VLAN_HLEN;
2374#endif
cd28ab6a
SH		 2375
2376 if (unlikely(netif_msg_rx_status(sky2)))
2377 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
497d7c86 2378 dev->name, sky2->rx_next, status, length);
cd28ab6a 2379
793b883e 2380 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
d70cd51a 2381 prefetch(sky2->rx_ring + sky2->rx_next);
cd28ab6a 2382
3b12e014
SH		 2383 /* This chip has hardware problems that generates bogus status.
2384 * So do only marginal checking and expect higher level protocols
2385 * to handle crap frames.
2386 */
2387 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2388 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2389 length != count)
2390 goto okay;
2391
42eeea01 2392 if (status & GMR_FS_ANY_ERR)
cd28ab6a
SH		 2393 goto error;
2394
42eeea01 2395 if (!(status & GMR_FS_RX_OK))
2396 goto resubmit;
2397
d6532232
SH		 2398 /* if length reported by DMA does not match PHY, packet was truncated */
2399 if (length != count)
3b12e014 2400 goto len_error;
71749531 2401
3b12e014 2402okay:
14d0263f
SH		 2403 if (length < copybreak)
2404 skb = receive_copy(sky2, re, length);
2405 else
2406 skb = receive_new(sky2, re, length);
793b883e 2407resubmit:
14d0263f 2408 sky2_rx_submit(sky2, re);
79e57d32 2409
cd28ab6a
SH		 2410 return skb;
2411
3b12e014 2412len_error:
71749531
SH		 2413 /* Truncation of overlength packets
2414 causes PHY length to not match MAC length */
7138a0f5 2415 ++dev->stats.rx_length_errors;
d6532232 2416 if (netif_msg_rx_err(sky2) && net_ratelimit())
3b12e014
SH		 2417 pr_info(PFX "%s: rx length error: status %#x length %d\n",
2418 dev->name, status, length);
d6532232 2419 goto resubmit;
71749531 2420
cd28ab6a 2421error:
7138a0f5 2422 ++dev->stats.rx_errors;
b6d77734 2423 if (status & GMR_FS_RX_FF_OV) {
7138a0f5 2424 dev->stats.rx_over_errors++;
b6d77734
SH		 2425 goto resubmit;
2426 }
6e15b712 2427
3be92a70 2428 if (netif_msg_rx_err(sky2) && net_ratelimit())
cd28ab6a 2429 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
497d7c86 2430 dev->name, status, length);
793b883e
SH		 2431
2432 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
7138a0f5 2433 dev->stats.rx_length_errors++;
cd28ab6a 2434 if (status & GMR_FS_FRAGMENT)
7138a0f5 2435 dev->stats.rx_frame_errors++;
cd28ab6a 2436 if (status & GMR_FS_CRC_ERR)
7138a0f5 2437 dev->stats.rx_crc_errors++;
79e57d32 2438
793b883e 2439 goto resubmit;
cd28ab6a
SH		 2440}
2441
e07b1aa8
SH		 2442/* Transmit complete */
2443static inline void sky2_tx_done(struct net_device *dev, u16 last)
13b97b74 2444{
e07b1aa8 2445 struct sky2_port *sky2 = netdev_priv(dev);
302d1252 2446
49d4b8ba 2447 if (netif_running(dev))
e07b1aa8 2448 sky2_tx_complete(sky2, last);
cd28ab6a
SH		 2449}
2450
37e5a243
SH		 2451static inline void sky2_skb_rx(const struct sky2_port *sky2,
2452 u32 status, struct sk_buff *skb)
2453{
2454#ifdef SKY2_VLAN_TAG_USED
2455 u16 vlan_tag = be16_to_cpu(sky2->rx_tag);
2456 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
2457 if (skb->ip_summed == CHECKSUM_NONE)
2458 vlan_hwaccel_receive_skb(skb, sky2->vlgrp, vlan_tag);
2459 else
2460 vlan_gro_receive(&sky2->hw->napi, sky2->vlgrp,
2461 vlan_tag, skb);
2462 return;
2463 }
2464#endif
2465 if (skb->ip_summed == CHECKSUM_NONE)
2466 netif_receive_skb(skb);
2467 else
2468 napi_gro_receive(&sky2->hw->napi, skb);
2469}
2470
bf15fe99
SH		 2471static inline void sky2_rx_done(struct sky2_hw *hw, unsigned port,
2472 unsigned packets, unsigned bytes)
2473{
2474 if (packets) {
2475 struct net_device *dev = hw->dev[port];
2476
2477 dev->stats.rx_packets += packets;
2478 dev->stats.rx_bytes += bytes;
2479 dev->last_rx = jiffies;
2480 sky2_rx_update(netdev_priv(dev), rxqaddr[port]);
2481 }
2482}
2483
e07b1aa8 2484/* Process status response ring */
26691830 2485static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
cd28ab6a 2486{
e07b1aa8 2487 int work_done = 0;
bf15fe99
SH		 2488 unsigned int total_bytes[2] = { 0 };
2489 unsigned int total_packets[2] = { 0 };
a8fd6266 2490
af2a58ac 2491 rmb();
26691830 2492 do {
55c9dd35 2493 struct sky2_port *sky2;
13210ce5 2494 struct sky2_status_le *le = hw->st_le + hw->st_idx;
ab5adecb 2495 unsigned port;
13210ce5 2496 struct net_device *dev;
cd28ab6a 2497 struct sk_buff *skb;
cd28ab6a
SH		 2498 u32 status;
2499 u16 length;
ab5adecb
SH		 2500 u8 opcode = le->opcode;
2501
2502 if (!(opcode & HW_OWNER))
2503 break;
cd28ab6a 2504
cb5d9547 2505 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
bea86103 2506
ab5adecb 2507 port = le->css & CSS_LINK_BIT;
69161611 2508 dev = hw->dev[port];
13210ce5 2509 sky2 = netdev_priv(dev);
f65b138c
SH		 2510 length = le16_to_cpu(le->length);
2511 status = le32_to_cpu(le->status);
cd28ab6a 2512
ab5adecb
SH		 2513 le->opcode = 0;
2514 switch (opcode & ~HW_OWNER) {
cd28ab6a 2515 case OP_RXSTAT:
bf15fe99
SH		 2516 total_packets[port]++;
2517 total_bytes[port] += length;
497d7c86 2518 skb = sky2_receive(dev, length, status);
3225b919 2519 if (unlikely(!skb)) {
7138a0f5 2520 dev->stats.rx_dropped++;
55c9dd35 2521 break;
3225b919 2522 }
13210ce5 2523
69161611 2524 /* This chip reports checksum status differently */
05745c4a 2525 if (hw->flags & SKY2_HW_NEW_LE) {
0ea065e5 2526 if ((sky2->flags & SKY2_FLAG_RX_CHECKSUM) &&
69161611
SH		 2527 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2528 (le->css & CSS_TCPUDPCSOK))
2529 skb->ip_summed = CHECKSUM_UNNECESSARY;
2530 else
2531 skb->ip_summed = CHECKSUM_NONE;
2532 }
2533
13210ce5 2534 skb->protocol = eth_type_trans(skb, dev);
13210ce5 2535
37e5a243 2536 sky2_skb_rx(sky2, status, skb);
13210ce5 2537
22e11703 2538 /* Stop after net poll weight */
13210ce5 2539 if (++work_done >= to_do)
2540 goto exit_loop;
cd28ab6a
SH		 2541 break;
2542
d1f13708 2543#ifdef SKY2_VLAN_TAG_USED
2544 case OP_RXVLAN:
2545 sky2->rx_tag = length;
2546 break;
2547
2548 case OP_RXCHKSVLAN:
2549 sky2->rx_tag = length;
2550 /* fall through */
2551#endif
cd28ab6a 2552 case OP_RXCHKS:
0ea065e5 2553 if (!(sky2->flags & SKY2_FLAG_RX_CHECKSUM))
87418307
SH		 2554 break;
2555
05745c4a
SH		 2556 /* If this happens then driver assuming wrong format */
2557 if (unlikely(hw->flags & SKY2_HW_NEW_LE)) {
2558 if (net_ratelimit())
2559 printk(KERN_NOTICE "%s: unexpected"
2560 " checksum status\n",
2561 dev->name);
69161611 2562 break;
05745c4a 2563 }
69161611 2564
87418307
SH		 2565 /* Both checksum counters are programmed to start at
2566 * the same offset, so unless there is a problem they
2567 * should match. This failure is an early indication that
2568 * hardware receive checksumming won't work.
2569 */
2570 if (likely(status >> 16 == (status & 0xffff))) {
2571 skb = sky2->rx_ring[sky2->rx_next].skb;
2572 skb->ip_summed = CHECKSUM_COMPLETE;
b9389796 2573 skb->csum = le16_to_cpu(status);
87418307
SH		 2574 } else {
2575 printk(KERN_NOTICE PFX "%s: hardware receive "
2576 "checksum problem (status = %#x)\n",
2577 dev->name, status);
0ea065e5
SH		 2578 sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM;
2579
87418307 2580 sky2_write32(sky2->hw,
69161611 2581 Q_ADDR(rxqaddr[port], Q_CSR),
87418307
SH		 2582 BMU_DIS_RX_CHKSUM);
2583 }
cd28ab6a
SH		 2584 break;
2585
2586 case OP_TXINDEXLE:
13b97b74 2587 /* TX index reports status for both ports */
f55925d7 2588 sky2_tx_done(hw->dev[0], status & 0xfff);
e07b1aa8
SH		 2589 if (hw->dev[1])
2590 sky2_tx_done(hw->dev[1],
2591 ((status >> 24) & 0xff)
2592 | (u16)(length & 0xf) << 8);
cd28ab6a
SH		 2593 break;
2594
cd28ab6a
SH		 2595 default:
2596 if (net_ratelimit())
793b883e 2597 printk(KERN_WARNING PFX
ab5adecb 2598 "unknown status opcode 0x%x\n", opcode);
cd28ab6a 2599 }
26691830 2600 } while (hw->st_idx != idx);
cd28ab6a 2601
fe2a24df
SH		 2602 /* Fully processed status ring so clear irq */
2603 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2604
13210ce5 2605exit_loop:
bf15fe99
SH		 2606 sky2_rx_done(hw, 0, total_packets[0], total_bytes[0]);
2607 sky2_rx_done(hw, 1, total_packets[1], total_bytes[1]);
22e11703 2608
e07b1aa8 2609 return work_done;
cd28ab6a
SH		 2610}
2611
2612static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2613{
2614 struct net_device *dev = hw->dev[port];
2615
3be92a70
SH		 2616 if (net_ratelimit())
2617 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
2618 dev->name, status);
cd28ab6a
SH		 2619
2620 if (status & Y2_IS_PAR_RD1) {
3be92a70
SH		 2621 if (net_ratelimit())
2622 printk(KERN_ERR PFX "%s: ram data read parity error\n",
2623 dev->name);
cd28ab6a
SH		 2624 /* Clear IRQ */
2625 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2626 }
2627
2628 if (status & Y2_IS_PAR_WR1) {
3be92a70
SH		 2629 if (net_ratelimit())
2630 printk(KERN_ERR PFX "%s: ram data write parity error\n",
2631 dev->name);
cd28ab6a
SH		 2632
2633 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2634 }
2635
2636 if (status & Y2_IS_PAR_MAC1) {
3be92a70
SH		 2637 if (net_ratelimit())
2638 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
cd28ab6a
SH		 2639 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2640 }
2641
2642 if (status & Y2_IS_PAR_RX1) {
3be92a70
SH		 2643 if (net_ratelimit())
2644 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
cd28ab6a
SH		 2645 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2646 }
2647
2648 if (status & Y2_IS_TCP_TXA1) {
3be92a70
SH		 2649 if (net_ratelimit())
2650 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
2651 dev->name);
cd28ab6a
SH		 2652 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2653 }
2654}
2655
2656static void sky2_hw_intr(struct sky2_hw *hw)
2657{
555382cb 2658 struct pci_dev *pdev = hw->pdev;
cd28ab6a 2659 u32 status = sky2_read32(hw, B0_HWE_ISRC);
555382cb
SH		 2660 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2661
2662 status &= hwmsk;
cd28ab6a 2663
793b883e 2664 if (status & Y2_IS_TIST_OV)
cd28ab6a 2665 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
cd28ab6a
SH		 2666
2667 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
793b883e
SH		 2668 u16 pci_err;
2669
a40ccc68 2670 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
b32f40c4 2671 pci_err = sky2_pci_read16(hw, PCI_STATUS);
3be92a70 2672 if (net_ratelimit())
555382cb 2673 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
b02a9258 2674 pci_err);
cd28ab6a 2675
b32f40c4 2676 sky2_pci_write16(hw, PCI_STATUS,
167f53d0 2677 pci_err | PCI_STATUS_ERROR_BITS);
a40ccc68 2678 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
cd28ab6a
SH		 2679 }
2680
2681 if (status & Y2_IS_PCI_EXP) {
d571b694 2682 /* PCI-Express uncorrectable Error occurred */
555382cb 2683 u32 err;
cd28ab6a 2684
a40ccc68 2685 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
7782c8c4
SH		 2686 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2687 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2688 0xfffffffful);
3be92a70 2689 if (net_ratelimit())
555382cb 2690 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
cf06ffb4 2691
7782c8c4 2692 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
a40ccc68 2693 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
cd28ab6a
SH		 2694 }
2695
2696 if (status & Y2_HWE_L1_MASK)
2697 sky2_hw_error(hw, 0, status);
2698 status >>= 8;
2699 if (status & Y2_HWE_L1_MASK)
2700 sky2_hw_error(hw, 1, status);
2701}
2702
2703static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2704{
2705 struct net_device *dev = hw->dev[port];
2706 struct sky2_port *sky2 = netdev_priv(dev);
2707 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2708
2709 if (netif_msg_intr(sky2))
2710 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2711 dev->name, status);
2712
a3caeada
SH		 2713 if (status & GM_IS_RX_CO_OV)
2714 gma_read16(hw, port, GM_RX_IRQ_SRC);
2715
2716 if (status & GM_IS_TX_CO_OV)
2717 gma_read16(hw, port, GM_TX_IRQ_SRC);
2718
cd28ab6a 2719 if (status & GM_IS_RX_FF_OR) {
7138a0f5 2720 ++dev->stats.rx_fifo_errors;
cd28ab6a
SH		 2721 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2722 }
2723
2724 if (status & GM_IS_TX_FF_UR) {
7138a0f5 2725 ++dev->stats.tx_fifo_errors;
cd28ab6a
SH		 2726 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2727 }
cd28ab6a
SH		 2728}
2729
40b01727 2730/* This should never happen it is a bug. */
c119731d 2731static void sky2_le_error(struct sky2_hw *hw, unsigned port, u16 q)
d257924e
SH		 2732{
2733 struct net_device *dev = hw->dev[port];
c119731d 2734 u16 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
d257924e 2735
c119731d
SH		 2736 dev_err(&hw->pdev->dev, PFX
2737 "%s: descriptor error q=%#x get=%u put=%u\n",
2738 dev->name, (unsigned) q, (unsigned) idx,
2739 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
d257924e 2740
40b01727 2741 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
d257924e 2742}
cd28ab6a 2743
75e80683
SH		 2744static int sky2_rx_hung(struct net_device *dev)
2745{
2746 struct sky2_port *sky2 = netdev_priv(dev);
2747 struct sky2_hw *hw = sky2->hw;
2748 unsigned port = sky2->port;
2749 unsigned rxq = rxqaddr[port];
2750 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2751 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2752 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2753 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2754
2755 /* If idle and MAC or PCI is stuck */
2756 if (sky2->check.last == dev->last_rx &&
2757 ((mac_rp == sky2->check.mac_rp &&
2758 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2759 /* Check if the PCI RX hang */
2760 (fifo_rp == sky2->check.fifo_rp &&
2761 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2762 printk(KERN_DEBUG PFX "%s: hung mac %d:%d fifo %d (%d:%d)\n",
2763 dev->name, mac_lev, mac_rp, fifo_lev, fifo_rp,
2764 sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2765 return 1;
2766 } else {
2767 sky2->check.last = dev->last_rx;
2768 sky2->check.mac_rp = mac_rp;
2769 sky2->check.mac_lev = mac_lev;
2770 sky2->check.fifo_rp = fifo_rp;
2771 sky2->check.fifo_lev = fifo_lev;
2772 return 0;
2773 }
2774}
2775
32c2c300 2776static void sky2_watchdog(unsigned long arg)
d27ed387 2777{
01bd7564 2778 struct sky2_hw *hw = (struct sky2_hw *) arg;
d27ed387 2779
75e80683 2780 /* Check for lost IRQ once a second */
32c2c300 2781 if (sky2_read32(hw, B0_ISRC)) {
bea3348e 2782 napi_schedule(&hw->napi);
75e80683
SH		 2783 } else {
2784 int i, active = 0;
2785
2786 for (i = 0; i < hw->ports; i++) {
bea3348e 2787 struct net_device *dev = hw->dev[i];
75e80683
SH		 2788 if (!netif_running(dev))
2789 continue;
2790 ++active;
2791
2792 /* For chips with Rx FIFO, check if stuck */
39dbd958 2793 if ((hw->flags & SKY2_HW_RAM_BUFFER) &&
75e80683
SH		 2794 sky2_rx_hung(dev)) {
2795 pr_info(PFX "%s: receiver hang detected\n",
2796 dev->name);
2797 schedule_work(&hw->restart_work);
2798 return;
2799 }
2800 }
2801
2802 if (active == 0)
2803 return;
32c2c300 2804 }
01bd7564 2805
75e80683 2806 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
d27ed387
SH		 2807}
2808
40b01727
SH		 2809/* Hardware/software error handling */
2810static void sky2_err_intr(struct sky2_hw *hw, u32 status)
cd28ab6a 2811{
40b01727
SH		 2812 if (net_ratelimit())
2813 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
cd28ab6a 2814
1e5f1283
SH		 2815 if (status & Y2_IS_HW_ERR)
2816 sky2_hw_intr(hw);
d257924e 2817
1e5f1283
SH		 2818 if (status & Y2_IS_IRQ_MAC1)
2819 sky2_mac_intr(hw, 0);
cd28ab6a 2820
1e5f1283
SH		 2821 if (status & Y2_IS_IRQ_MAC2)
2822 sky2_mac_intr(hw, 1);
cd28ab6a 2823
1e5f1283 2824 if (status & Y2_IS_CHK_RX1)
c119731d 2825 sky2_le_error(hw, 0, Q_R1);
d257924e 2826
1e5f1283 2827 if (status & Y2_IS_CHK_RX2)
c119731d 2828 sky2_le_error(hw, 1, Q_R2);
d257924e 2829
1e5f1283 2830 if (status & Y2_IS_CHK_TXA1)
c119731d 2831 sky2_le_error(hw, 0, Q_XA1);
d257924e 2832
1e5f1283 2833 if (status & Y2_IS_CHK_TXA2)
c119731d 2834 sky2_le_error(hw, 1, Q_XA2);
40b01727
SH		 2835}
2836
bea3348e 2837static int sky2_poll(struct napi_struct *napi, int work_limit)
40b01727 2838{
bea3348e 2839 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
40b01727 2840 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
6f535763 2841 int work_done = 0;
26691830 2842 u16 idx;
40b01727
SH		 2843
2844 if (unlikely(status & Y2_IS_ERROR))
2845 sky2_err_intr(hw, status);
2846
2847 if (status & Y2_IS_IRQ_PHY1)
2848 sky2_phy_intr(hw, 0);
2849
2850 if (status & Y2_IS_IRQ_PHY2)
2851 sky2_phy_intr(hw, 1);
cd28ab6a 2852
0f5aac70
SH		 2853 if (status & Y2_IS_PHY_QLNK)
2854 sky2_qlink_intr(hw);
2855
26691830
SH		 2856 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
2857 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
6f535763
DM		 2858
2859 if (work_done >= work_limit)
26691830
SH		 2860 goto done;
2861 }
6f535763 2862
26691830
SH		 2863 napi_complete(napi);
2864 sky2_read32(hw, B0_Y2_SP_LISR);
2865done:
6f535763 2866
bea3348e 2867 return work_done;
e07b1aa8
SH		 2868}
2869
7d12e780 2870static irqreturn_t sky2_intr(int irq, void *dev_id)
e07b1aa8
SH		 2871{
2872 struct sky2_hw *hw = dev_id;
e07b1aa8
SH		 2873 u32 status;
2874
2875 /* Reading this mask interrupts as side effect */
2876 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2877 if (status == 0 || status == ~0)
2878 return IRQ_NONE;
793b883e 2879
e07b1aa8 2880 prefetch(&hw->st_le[hw->st_idx]);
bea3348e
SH		 2881
2882 napi_schedule(&hw->napi);
793b883e 2883
cd28ab6a
SH		 2884 return IRQ_HANDLED;
2885}
2886
2887#ifdef CONFIG_NET_POLL_CONTROLLER
2888static void sky2_netpoll(struct net_device *dev)
2889{
2890 struct sky2_port *sky2 = netdev_priv(dev);
2891
bea3348e 2892 napi_schedule(&sky2->hw->napi);
cd28ab6a
SH		 2893}
2894#endif
2895
2896/* Chip internal frequency for clock calculations */
05745c4a 2897static u32 sky2_mhz(const struct sky2_hw *hw)
cd28ab6a 2898{
793b883e 2899 switch (hw->chip_id) {
cd28ab6a 2900 case CHIP_ID_YUKON_EC:
5a5b1ea0 2901 case CHIP_ID_YUKON_EC_U:
93745494 2902 case CHIP_ID_YUKON_EX:
ed4d4161 2903 case CHIP_ID_YUKON_SUPR:
0ce8b98d 2904 case CHIP_ID_YUKON_UL_2:
0f5aac70 2905 case CHIP_ID_YUKON_OPT:
05745c4a
SH		 2906 return 125;
2907
cd28ab6a 2908 case CHIP_ID_YUKON_FE:
05745c4a
SH		 2909 return 100;
2910
2911 case CHIP_ID_YUKON_FE_P:
2912 return 50;
2913
2914 case CHIP_ID_YUKON_XL:
2915 return 156;
2916
2917 default:
2918 BUG();
cd28ab6a
SH		 2919 }
2920}
2921
fb17358f 2922static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
cd28ab6a 2923{
fb17358f 2924 return sky2_mhz(hw) * us;
cd28ab6a
SH		 2925}
2926
fb17358f 2927static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
cd28ab6a 2928{
fb17358f 2929 return clk / sky2_mhz(hw);
cd28ab6a
SH		 2930}
2931
fb17358f 2932
e3173832 2933static int __devinit sky2_init(struct sky2_hw *hw)
cd28ab6a 2934{
b89165f2 2935 u8 t8;
cd28ab6a 2936
167f53d0 2937 /* Enable all clocks and check for bad PCI access */
b32f40c4 2938 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
451af335 2939
cd28ab6a 2940 sky2_write8(hw, B0_CTST, CS_RST_CLR);
08c06d8a 2941
cd28ab6a 2942 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
ea76e635
SH		 2943 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2944
2945 switch(hw->chip_id) {
2946 case CHIP_ID_YUKON_XL:
39dbd958 2947 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
ea76e635
SH		 2948 break;
2949
2950 case CHIP_ID_YUKON_EC_U:
2951 hw->flags = SKY2_HW_GIGABIT
2952 | SKY2_HW_NEWER_PHY
2953 | SKY2_HW_ADV_POWER_CTL;
2954 break;
2955
2956 case CHIP_ID_YUKON_EX:
2957 hw->flags = SKY2_HW_GIGABIT
2958 | SKY2_HW_NEWER_PHY
2959 | SKY2_HW_NEW_LE
2960 | SKY2_HW_ADV_POWER_CTL;
2961
2962 /* New transmit checksum */
2963 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
2964 hw->flags |= SKY2_HW_AUTO_TX_SUM;
2965 break;
2966
2967 case CHIP_ID_YUKON_EC:
2968 /* This rev is really old, and requires untested workarounds */
2969 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
2970 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
2971 return -EOPNOTSUPP;
2972 }
39dbd958 2973 hw->flags = SKY2_HW_GIGABIT;
ea76e635
SH		 2974 break;
2975
2976 case CHIP_ID_YUKON_FE:
ea76e635
SH		 2977 break;
2978
05745c4a
SH		 2979 case CHIP_ID_YUKON_FE_P:
2980 hw->flags = SKY2_HW_NEWER_PHY
2981 | SKY2_HW_NEW_LE
2982 | SKY2_HW_AUTO_TX_SUM
2983 | SKY2_HW_ADV_POWER_CTL;
2984 break;
ed4d4161
SH		 2985
2986 case CHIP_ID_YUKON_SUPR:
2987 hw->flags = SKY2_HW_GIGABIT
2988 | SKY2_HW_NEWER_PHY
2989 | SKY2_HW_NEW_LE
2990 | SKY2_HW_AUTO_TX_SUM
2991 | SKY2_HW_ADV_POWER_CTL;
2992 break;
2993
0ce8b98d 2994 case CHIP_ID_YUKON_UL_2:
b338682d
TI		 2995 hw->flags = SKY2_HW_GIGABIT
2996 | SKY2_HW_ADV_POWER_CTL;
2997 break;
2998
0f5aac70 2999 case CHIP_ID_YUKON_OPT:
0ce8b98d 3000 hw->flags = SKY2_HW_GIGABIT
b338682d 3001 | SKY2_HW_NEW_LE
0ce8b98d
SH		 3002 | SKY2_HW_ADV_POWER_CTL;
3003 break;
3004
ea76e635 3005 default:
b02a9258
SH		 3006 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
3007 hw->chip_id);
cd28ab6a
SH		 3008 return -EOPNOTSUPP;
3009 }
3010
ea76e635
SH		 3011 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
3012 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
3013 hw->flags |= SKY2_HW_FIBRE_PHY;
290d4de5 3014
e3173832
SH		 3015 hw->ports = 1;
3016 t8 = sky2_read8(hw, B2_Y2_HW_RES);
3017 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
3018 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
3019 ++hw->ports;
3020 }
3021
74a61ebf
MM		 3022 if (sky2_read8(hw, B2_E_0))
3023 hw->flags |= SKY2_HW_RAM_BUFFER;
3024
e3173832
SH		 3025 return 0;
3026}
3027
3028static void sky2_reset(struct sky2_hw *hw)
3029{
555382cb 3030 struct pci_dev *pdev = hw->pdev;
e3173832 3031 u16 status;
555382cb
SH		 3032 int i, cap;
3033 u32 hwe_mask = Y2_HWE_ALL_MASK;
e3173832 3034
cd28ab6a 3035 /* disable ASF */
4f44d8ba
SH		 3036 if (hw->chip_id == CHIP_ID_YUKON_EX) {
3037 status = sky2_read16(hw, HCU_CCSR);
3038 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
3039 HCU_CCSR_UC_STATE_MSK);
3040 sky2_write16(hw, HCU_CCSR, status);
3041 } else
3042 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
3043 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
cd28ab6a
SH		 3044
3045 /* do a SW reset */
3046 sky2_write8(hw, B0_CTST, CS_RST_SET);
3047 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3048
ac93a394
SH		 3049 /* allow writes to PCI config */
3050 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3051
cd28ab6a 3052 /* clear PCI errors, if any */
b32f40c4 3053 status = sky2_pci_read16(hw, PCI_STATUS);
167f53d0 3054 status |= PCI_STATUS_ERROR_BITS;
b32f40c4 3055 sky2_pci_write16(hw, PCI_STATUS, status);
cd28ab6a
SH		 3056
3057 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
3058
555382cb
SH		 3059 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3060 if (cap) {
7782c8c4
SH		 3061 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
3062 0xfffffffful);
555382cb
SH		 3063
3064 /* If error bit is stuck on ignore it */
3065 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
3066 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
7782c8c4 3067 else
555382cb
SH		 3068 hwe_mask |= Y2_IS_PCI_EXP;
3069 }
cd28ab6a 3070
ae306cca 3071 sky2_power_on(hw);
a40ccc68 3072 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
cd28ab6a
SH		 3073
3074 for (i = 0; i < hw->ports; i++) {
3075 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
3076 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
69161611 3077
ed4d4161
SH		 3078 if (hw->chip_id == CHIP_ID_YUKON_EX ||
3079 hw->chip_id == CHIP_ID_YUKON_SUPR)
69161611
SH		 3080 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
3081 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
3082 | GMC_BYP_RETR_ON);
877c8570
SH		 3083
3084 }
3085
3086 if (hw->chip_id == CHIP_ID_YUKON_SUPR && hw->chip_rev > CHIP_REV_YU_SU_B0) {
3087 /* enable MACSec clock gating */
3088 sky2_pci_write32(hw, PCI_DEV_REG3, P_CLK_MACSEC_DIS);
cd28ab6a
SH		 3089 }
3090
0f5aac70
SH		 3091 if (hw->chip_id == CHIP_ID_YUKON_OPT) {
3092 u16 reg;
3093 u32 msk;
3094
3095 if (hw->chip_rev == 0) {
3096 /* disable PCI-E PHY power down (set PHY reg 0x80, bit 7 */
3097 sky2_write32(hw, Y2_PEX_PHY_DATA, (0x80UL << 16) | (1 << 7));
3098
3099 /* set PHY Link Detect Timer to 1.1 second (11x 100ms) */
3100 reg = 10;
3101 } else {
3102 /* set PHY Link Detect Timer to 0.4 second (4x 100ms) */
3103 reg = 3;
3104 }
3105
3106 reg <<= PSM_CONFIG_REG4_TIMER_PHY_LINK_DETECT_BASE;
3107
3108 /* reset PHY Link Detect */
a40ccc68 3109 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
0f5aac70
SH		 3110 sky2_pci_write16(hw, PSM_CONFIG_REG4,
3111 reg | PSM_CONFIG_REG4_RST_PHY_LINK_DETECT);
3112 sky2_pci_write16(hw, PSM_CONFIG_REG4, reg);
3113
3114
3115 /* enable PHY Quick Link */
3116 msk = sky2_read32(hw, B0_IMSK);
3117 msk |= Y2_IS_PHY_QLNK;
3118 sky2_write32(hw, B0_IMSK, msk);
3119
3120 /* check if PSMv2 was running before */
3121 reg = sky2_pci_read16(hw, PSM_CONFIG_REG3);
3122 if (reg & PCI_EXP_LNKCTL_ASPMC) {
3123 int cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3124 /* restore the PCIe Link Control register */
3125 sky2_pci_write16(hw, cap + PCI_EXP_LNKCTL, reg);
3126 }
a40ccc68 3127 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
0f5aac70
SH		 3128
3129 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3130 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3131 }
3132
793b883e
SH		 3133 /* Clear I2C IRQ noise */
3134 sky2_write32(hw, B2_I2C_IRQ, 1);
cd28ab6a
SH		 3135
3136 /* turn off hardware timer (unused) */
3137 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
3138 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
793b883e 3139
69634ee7
SH		 3140 /* Turn off descriptor polling */
3141 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
cd28ab6a
SH		 3142
3143 /* Turn off receive timestamp */
3144 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
793b883e 3145 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
cd28ab6a
SH		 3146
3147 /* enable the Tx Arbiters */
3148 for (i = 0; i < hw->ports; i++)
3149 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3150
3151 /* Initialize ram interface */
3152 for (i = 0; i < hw->ports; i++) {
793b883e 3153 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
cd28ab6a
SH		 3154
3155 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
3156 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
3157 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
3158 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
3159 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
3160 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
3161 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
3162 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
3163 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
3164 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
3165 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
3166 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
3167 }
3168
555382cb 3169 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
cd28ab6a 3170
cd28ab6a 3171 for (i = 0; i < hw->ports; i++)
d3bcfbeb 3172 sky2_gmac_reset(hw, i);
cd28ab6a 3173
cd28ab6a
SH		 3174 memset(hw->st_le, 0, STATUS_LE_BYTES);
3175 hw->st_idx = 0;
3176
3177 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
3178 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
3179
3180 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
793b883e 3181 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
cd28ab6a
SH		 3182
3183 /* Set the list last index */
793b883e 3184 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
cd28ab6a 3185
290d4de5
SH		 3186 sky2_write16(hw, STAT_TX_IDX_TH, 10);
3187 sky2_write8(hw, STAT_FIFO_WM, 16);
cd28ab6a 3188
290d4de5
SH		 3189 /* set Status-FIFO ISR watermark */
3190 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
3191 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
3192 else
3193 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
cd28ab6a 3194
290d4de5 3195 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
77b3d6a2
SH		 3196 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
3197 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
cd28ab6a 3198
793b883e 3199 /* enable status unit */
cd28ab6a
SH		 3200 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
3201
3202 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3203 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3204 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
e3173832
SH		 3205}
3206
af18d8b8
SH		 3207/* Take device down (offline).
3208 * Equivalent to doing dev_stop() but this does not
3209 * inform upper layers of the transistion.
3210 */
3211static void sky2_detach(struct net_device *dev)
3212{
3213 if (netif_running(dev)) {
c36531b9 3214 netif_tx_lock(dev);
af18d8b8 3215 netif_device_detach(dev); /* stop txq */
c36531b9 3216 netif_tx_unlock(dev);
af18d8b8
SH		 3217 sky2_down(dev);
3218 }
3219}
3220
3221/* Bring device back after doing sky2_detach */
3222static int sky2_reattach(struct net_device *dev)
3223{
3224 int err = 0;
3225
3226 if (netif_running(dev)) {
3227 err = sky2_up(dev);
3228 if (err) {
3229 printk(KERN_INFO PFX "%s: could not restart %d\n",
3230 dev->name, err);
3231 dev_close(dev);
3232 } else {
3233 netif_device_attach(dev);
3234 sky2_set_multicast(dev);
3235 }
3236 }
3237
3238 return err;
3239}
3240
81906791
SH		 3241static void sky2_restart(struct work_struct *work)
3242{
3243 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
af18d8b8 3244 int i;
81906791 3245
81906791 3246 rtnl_lock();
af18d8b8
SH		 3247 for (i = 0; i < hw->ports; i++)
3248 sky2_detach(hw->dev[i]);
81906791 3249
8cfcbe99
SH		 3250 napi_disable(&hw->napi);
3251 sky2_write32(hw, B0_IMSK, 0);
81906791
SH		 3252 sky2_reset(hw);
3253 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
6de16237 3254 napi_enable(&hw->napi);
81906791 3255
af18d8b8
SH		 3256 for (i = 0; i < hw->ports; i++)
3257 sky2_reattach(hw->dev[i]);
81906791 3258
81906791
SH		 3259 rtnl_unlock();
3260}
3261
e3173832
SH		 3262static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
3263{
3264 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
3265}
3266
2ca4231d
MM		 3267static void sky2_hw_set_wol(struct sky2_hw *hw)
3268{
3269 int wol = 0;
3270 int i;
3271
3272 for (i = 0; i < hw->ports; i++) {
3273 struct net_device *dev = hw->dev[i];
3274 struct sky2_port *sky2 = netdev_priv(dev);
3275
3276 if (sky2->wol)
3277 wol = 1;
3278 }
3279
3280 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3281 hw->chip_id == CHIP_ID_YUKON_EX ||
3282 hw->chip_id == CHIP_ID_YUKON_FE_P)
3283 sky2_write32(hw, B0_CTST, wol ? Y2_HW_WOL_ON : Y2_HW_WOL_OFF);
3284
3285 device_set_wakeup_enable(&hw->pdev->dev, wol);
3286}
3287
e3173832
SH		 3288static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3289{
3290 const struct sky2_port *sky2 = netdev_priv(dev);
3291
3292 wol->supported = sky2_wol_supported(sky2->hw);
3293 wol->wolopts = sky2->wol;
3294}
3295
3296static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3297{
3298 struct sky2_port *sky2 = netdev_priv(dev);
3299 struct sky2_hw *hw = sky2->hw;
cd28ab6a 3300
8e95a202
JP		 3301 if ((wol->wolopts & ~sky2_wol_supported(sky2->hw)) ||
3302 !device_can_wakeup(&hw->pdev->dev))
e3173832
SH		 3303 return -EOPNOTSUPP;
3304
3305 sky2->wol = wol->wolopts;
3306
2ca4231d 3307 sky2_hw_set_wol(hw);
9d731d77 3308
e3173832
SH		 3309 if (!netif_running(dev))
3310 sky2_wol_init(sky2);
cd28ab6a
SH		 3311 return 0;
3312}
3313
28bd181a 3314static u32 sky2_supported_modes(const struct sky2_hw *hw)
cd28ab6a 3315{
b89165f2
SH		 3316 if (sky2_is_copper(hw)) {
3317 u32 modes = SUPPORTED_10baseT_Half
3318 | SUPPORTED_10baseT_Full
3319 | SUPPORTED_100baseT_Half
3320 | SUPPORTED_100baseT_Full
3321 | SUPPORTED_Autoneg | SUPPORTED_TP;
cd28ab6a 3322
ea76e635 3323 if (hw->flags & SKY2_HW_GIGABIT)
cd28ab6a 3324 modes |= SUPPORTED_1000baseT_Half
b89165f2
SH		 3325 | SUPPORTED_1000baseT_Full;
3326 return modes;
cd28ab6a 3327 } else
b89165f2
SH		 3328 return SUPPORTED_1000baseT_Half
3329 | SUPPORTED_1000baseT_Full
3330 | SUPPORTED_Autoneg
3331 | SUPPORTED_FIBRE;
cd28ab6a
SH		 3332}
3333
793b883e 3334static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
cd28ab6a
SH		 3335{
3336 struct sky2_port *sky2 = netdev_priv(dev);
3337 struct sky2_hw *hw = sky2->hw;
3338
3339 ecmd->transceiver = XCVR_INTERNAL;
3340 ecmd->supported = sky2_supported_modes(hw);
3341 ecmd->phy_address = PHY_ADDR_MARV;
b89165f2 3342 if (sky2_is_copper(hw)) {
cd28ab6a 3343 ecmd->port = PORT_TP;
b89165f2
SH		 3344 ecmd->speed = sky2->speed;
3345 } else {
3346 ecmd->speed = SPEED_1000;
cd28ab6a 3347 ecmd->port = PORT_FIBRE;
b89165f2 3348 }
cd28ab6a
SH		 3349
3350 ecmd->advertising = sky2->advertising;
0ea065e5
SH		 3351 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_SPEED)
3352 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
cd28ab6a
SH		 3353 ecmd->duplex = sky2->duplex;
3354 return 0;
3355}
3356
3357static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3358{
3359 struct sky2_port *sky2 = netdev_priv(dev);
3360 const struct sky2_hw *hw = sky2->hw;
3361 u32 supported = sky2_supported_modes(hw);
3362
3363 if (ecmd->autoneg == AUTONEG_ENABLE) {
0ea065e5 3364 sky2->flags |= SKY2_FLAG_AUTO_SPEED;
cd28ab6a
SH		 3365 ecmd->advertising = supported;
3366 sky2->duplex = -1;
3367 sky2->speed = -1;
3368 } else {
3369 u32 setting;
3370
793b883e 3371 switch (ecmd->speed) {
cd28ab6a
SH		 3372 case SPEED_1000:
3373 if (ecmd->duplex == DUPLEX_FULL)
3374 setting = SUPPORTED_1000baseT_Full;
3375 else if (ecmd->duplex == DUPLEX_HALF)
3376 setting = SUPPORTED_1000baseT_Half;
3377 else
3378 return -EINVAL;
3379 break;
3380 case SPEED_100:
3381 if (ecmd->duplex == DUPLEX_FULL)
3382 setting = SUPPORTED_100baseT_Full;
3383 else if (ecmd->duplex == DUPLEX_HALF)
3384 setting = SUPPORTED_100baseT_Half;
3385 else
3386 return -EINVAL;
3387 break;
3388
3389 case SPEED_10:
3390 if (ecmd->duplex == DUPLEX_FULL)
3391 setting = SUPPORTED_10baseT_Full;
3392 else if (ecmd->duplex == DUPLEX_HALF)
3393 setting = SUPPORTED_10baseT_Half;
3394 else
3395 return -EINVAL;
3396 break;
3397 default:
3398 return -EINVAL;
3399 }
3400
3401 if ((setting & supported) == 0)
3402 return -EINVAL;
3403
3404 sky2->speed = ecmd->speed;
3405 sky2->duplex = ecmd->duplex;
0ea065e5 3406 sky2->flags &= ~SKY2_FLAG_AUTO_SPEED;
cd28ab6a
SH		 3407 }
3408
cd28ab6a
SH		 3409 sky2->advertising = ecmd->advertising;
3410
d1b139c0 3411 if (netif_running(dev)) {
1b537565 3412 sky2_phy_reinit(sky2);
d1b139c0
SH		 3413 sky2_set_multicast(dev);
3414 }
cd28ab6a
SH		 3415
3416 return 0;
3417}
3418
3419static void sky2_get_drvinfo(struct net_device *dev,
3420 struct ethtool_drvinfo *info)
3421{
3422 struct sky2_port *sky2 = netdev_priv(dev);
3423
3424 strcpy(info->driver, DRV_NAME);
3425 strcpy(info->version, DRV_VERSION);
3426 strcpy(info->fw_version, "N/A");
3427 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
3428}
3429
3430static const struct sky2_stat {
793b883e
SH		 3431 char name[ETH_GSTRING_LEN];
3432 u16 offset;
cd28ab6a
SH		 3433} sky2_stats[] = {
3434 { "tx_bytes", GM_TXO_OK_HI },
3435 { "rx_bytes", GM_RXO_OK_HI },
3436 { "tx_broadcast", GM_TXF_BC_OK },
3437 { "rx_broadcast", GM_RXF_BC_OK },
3438 { "tx_multicast", GM_TXF_MC_OK },
3439 { "rx_multicast", GM_RXF_MC_OK },
3440 { "tx_unicast", GM_TXF_UC_OK },
3441 { "rx_unicast", GM_RXF_UC_OK },
3442 { "tx_mac_pause", GM_TXF_MPAUSE },
3443 { "rx_mac_pause", GM_RXF_MPAUSE },
eadfa7dd 3444 { "collisions", GM_TXF_COL },
cd28ab6a
SH		 3445 { "late_collision",GM_TXF_LAT_COL },
3446 { "aborted", GM_TXF_ABO_COL },
eadfa7dd 3447 { "single_collisions", GM_TXF_SNG_COL },
cd28ab6a 3448 { "multi_collisions", GM_TXF_MUL_COL },
eadfa7dd 3449
d2604540 3450 { "rx_short", GM_RXF_SHT },
cd28ab6a 3451 { "rx_runt", GM_RXE_FRAG },
eadfa7dd
SH		 3452 { "rx_64_byte_packets", GM_RXF_64B },
3453 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3454 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3455 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3456 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3457 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3458 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
cd28ab6a 3459 { "rx_too_long", GM_RXF_LNG_ERR },
eadfa7dd
SH		 3460 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3461 { "rx_jabber", GM_RXF_JAB_PKT },
cd28ab6a 3462 { "rx_fcs_error", GM_RXF_FCS_ERR },
eadfa7dd
SH		 3463
3464 { "tx_64_byte_packets", GM_TXF_64B },
3465 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3466 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3467 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3468 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3469 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3470 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3471 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
cd28ab6a
SH		 3472};
3473
cd28ab6a
SH		 3474static u32 sky2_get_rx_csum(struct net_device *dev)
3475{
3476 struct sky2_port *sky2 = netdev_priv(dev);
3477
0ea065e5 3478 return !!(sky2->flags & SKY2_FLAG_RX_CHECKSUM);
cd28ab6a
SH		 3479}
3480
3481static int sky2_set_rx_csum(struct net_device *dev, u32 data)
3482{
3483 struct sky2_port *sky2 = netdev_priv(dev);
3484
0ea065e5
SH		 3485 if (data)
3486 sky2->flags |= SKY2_FLAG_RX_CHECKSUM;
3487 else
3488 sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM;
793b883e 3489
cd28ab6a
SH		 3490 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
3491 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
3492
3493 return 0;
3494}
3495
3496static u32 sky2_get_msglevel(struct net_device *netdev)
3497{
3498 struct sky2_port *sky2 = netdev_priv(netdev);
3499 return sky2->msg_enable;
3500}
3501
9a7ae0a9
SH		 3502static int sky2_nway_reset(struct net_device *dev)
3503{
3504 struct sky2_port *sky2 = netdev_priv(dev);
9a7ae0a9 3505
0ea065e5 3506 if (!netif_running(dev) || !(sky2->flags & SKY2_FLAG_AUTO_SPEED))
9a7ae0a9
SH		 3507 return -EINVAL;
3508
1b537565 3509 sky2_phy_reinit(sky2);
d1b139c0 3510 sky2_set_multicast(dev);
9a7ae0a9
SH		 3511
3512 return 0;
3513}
3514
793b883e 3515static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
cd28ab6a
SH		 3516{
3517 struct sky2_hw *hw = sky2->hw;
3518 unsigned port = sky2->port;
3519 int i;
3520
3521 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
793b883e 3522 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
cd28ab6a 3523 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
793b883e 3524 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
cd28ab6a 3525
793b883e 3526 for (i = 2; i < count; i++)
cd28ab6a
SH		 3527 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
3528}
3529
cd28ab6a
SH		 3530static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3531{
3532 struct sky2_port *sky2 = netdev_priv(netdev);
3533 sky2->msg_enable = value;
3534}
3535
b9f2c044 3536static int sky2_get_sset_count(struct net_device *dev, int sset)
cd28ab6a 3537{
b9f2c044
JG		 3538 switch (sset) {
3539 case ETH_SS_STATS:
3540 return ARRAY_SIZE(sky2_stats);
3541 default:
3542 return -EOPNOTSUPP;
3543 }
cd28ab6a
SH		 3544}
3545
3546static void sky2_get_ethtool_stats(struct net_device *dev,
793b883e 3547 struct ethtool_stats *stats, u64 * data)
cd28ab6a
SH		 3548{
3549 struct sky2_port *sky2 = netdev_priv(dev);
3550
793b883e 3551 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
cd28ab6a
SH		 3552}
3553
793b883e 3554static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
cd28ab6a
SH		 3555{
3556 int i;
3557
3558 switch (stringset) {
3559 case ETH_SS_STATS:
3560 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3561 memcpy(data + i * ETH_GSTRING_LEN,
3562 sky2_stats[i].name, ETH_GSTRING_LEN);
3563 break;
3564 }
3565}
3566
cd28ab6a
SH		 3567static int sky2_set_mac_address(struct net_device *dev, void *p)
3568{
3569 struct sky2_port *sky2 = netdev_priv(dev);
a8ab1ec0
SH		 3570 struct sky2_hw *hw = sky2->hw;
3571 unsigned port = sky2->port;
3572 const struct sockaddr *addr = p;
cd28ab6a
SH		 3573
3574 if (!is_valid_ether_addr(addr->sa_data))
3575 return -EADDRNOTAVAIL;
3576
cd28ab6a 3577 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
a8ab1ec0 3578 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
cd28ab6a 3579 dev->dev_addr, ETH_ALEN);
a8ab1ec0 3580 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
cd28ab6a 3581 dev->dev_addr, ETH_ALEN);
1b537565 3582
a8ab1ec0
SH		 3583 /* virtual address for data */
3584 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3585
3586 /* physical address: used for pause frames */
3587 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
1b537565
SH		 3588
3589 return 0;
cd28ab6a
SH		 3590}
3591
a052b52f
SH		 3592static void inline sky2_add_filter(u8 filter[8], const u8 *addr)
3593{
3594 u32 bit;
3595
3596 bit = ether_crc(ETH_ALEN, addr) & 63;
3597 filter[bit >> 3] |= 1 << (bit & 7);
3598}
3599
cd28ab6a
SH		 3600static void sky2_set_multicast(struct net_device *dev)
3601{
3602 struct sky2_port *sky2 = netdev_priv(dev);
3603 struct sky2_hw *hw = sky2->hw;
3604 unsigned port = sky2->port;
3605 struct dev_mc_list *list = dev->mc_list;
3606 u16 reg;
3607 u8 filter[8];
a052b52f
SH		 3608 int rx_pause;
3609 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
cd28ab6a 3610
a052b52f 3611 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
cd28ab6a
SH		 3612 memset(filter, 0, sizeof(filter));
3613
3614 reg = gma_read16(hw, port, GM_RX_CTRL);
3615 reg |= GM_RXCR_UCF_ENA;
3616
d571b694 3617 if (dev->flags & IFF_PROMISC) /* promiscuous */
cd28ab6a 3618 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
a052b52f 3619 else if (dev->flags & IFF_ALLMULTI)
cd28ab6a 3620 memset(filter, 0xff, sizeof(filter));
a052b52f 3621 else if (dev->mc_count == 0 && !rx_pause)
cd28ab6a
SH		 3622 reg &= ~GM_RXCR_MCF_ENA;
3623 else {
3624 int i;
3625 reg |= GM_RXCR_MCF_ENA;
3626
a052b52f
SH		 3627 if (rx_pause)
3628 sky2_add_filter(filter, pause_mc_addr);
3629
3630 for (i = 0; list && i < dev->mc_count; i++, list = list->next)
3631 sky2_add_filter(filter, list->dmi_addr);
cd28ab6a
SH		 3632 }
3633
cd28ab6a 3634 gma_write16(hw, port, GM_MC_ADDR_H1,
793b883e 3635 (u16) filter[0] | ((u16) filter[1] << 8));
cd28ab6a 3636 gma_write16(hw, port, GM_MC_ADDR_H2,
793b883e 3637 (u16) filter[2] | ((u16) filter[3] << 8));
cd28ab6a 3638 gma_write16(hw, port, GM_MC_ADDR_H3,
793b883e 3639 (u16) filter[4] | ((u16) filter[5] << 8));
cd28ab6a 3640 gma_write16(hw, port, GM_MC_ADDR_H4,
793b883e 3641 (u16) filter[6] | ((u16) filter[7] << 8));
cd28ab6a
SH		 3642
3643 gma_write16(hw, port, GM_RX_CTRL, reg);
3644}
3645
3646/* Can have one global because blinking is controlled by
3647 * ethtool and that is always under RTNL mutex
3648 */
a84d0a3d 3649static void sky2_led(struct sky2_port *sky2, enum led_mode mode)
cd28ab6a 3650{
a84d0a3d
SH		 3651 struct sky2_hw *hw = sky2->hw;
3652 unsigned port = sky2->port;
793b883e 3653
a84d0a3d
SH		 3654 spin_lock_bh(&sky2->phy_lock);
3655 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3656 hw->chip_id == CHIP_ID_YUKON_EX ||
3657 hw->chip_id == CHIP_ID_YUKON_SUPR) {
3658 u16 pg;
793b883e
SH		 3659 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3660 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
793b883e 3661
a84d0a3d
SH		 3662 switch (mode) {
3663 case MO_LED_OFF:
3664 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3665 PHY_M_LEDC_LOS_CTRL(8) |
3666 PHY_M_LEDC_INIT_CTRL(8) |
3667 PHY_M_LEDC_STA1_CTRL(8) |
3668 PHY_M_LEDC_STA0_CTRL(8));
3669 break;
3670 case MO_LED_ON:
3671 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3672 PHY_M_LEDC_LOS_CTRL(9) |
3673 PHY_M_LEDC_INIT_CTRL(9) |
3674 PHY_M_LEDC_STA1_CTRL(9) |
3675 PHY_M_LEDC_STA0_CTRL(9));
3676 break;
3677 case MO_LED_BLINK:
3678 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3679 PHY_M_LEDC_LOS_CTRL(0xa) |
3680 PHY_M_LEDC_INIT_CTRL(0xa) |
3681 PHY_M_LEDC_STA1_CTRL(0xa) |
3682 PHY_M_LEDC_STA0_CTRL(0xa));
3683 break;
3684 case MO_LED_NORM:
3685 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3686 PHY_M_LEDC_LOS_CTRL(1) |
3687 PHY_M_LEDC_INIT_CTRL(8) |
3688 PHY_M_LEDC_STA1_CTRL(7) |
3689 PHY_M_LEDC_STA0_CTRL(7));
3690 }
793b883e 3691
a84d0a3d
SH		 3692 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3693 } else
7d2e3cb7 3694 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
a84d0a3d
SH		 3695 PHY_M_LED_MO_DUP(mode) |
3696 PHY_M_LED_MO_10(mode) |
3697 PHY_M_LED_MO_100(mode) |
3698 PHY_M_LED_MO_1000(mode) |
3699 PHY_M_LED_MO_RX(mode) |
3700 PHY_M_LED_MO_TX(mode));
3701
3702 spin_unlock_bh(&sky2->phy_lock);
cd28ab6a
SH		 3703}
3704
3705/* blink LED's for finding board */
3706static int sky2_phys_id(struct net_device *dev, u32 data)
3707{
3708 struct sky2_port *sky2 = netdev_priv(dev);
a84d0a3d 3709 unsigned int i;
cd28ab6a 3710
a84d0a3d
SH		 3711 if (data == 0)
3712 data = UINT_MAX;
cd28ab6a 3713
a84d0a3d
SH		 3714 for (i = 0; i < data; i++) {
3715 sky2_led(sky2, MO_LED_ON);
3716 if (msleep_interruptible(500))
3717 break;
3718 sky2_led(sky2, MO_LED_OFF);
3719 if (msleep_interruptible(500))
3720 break;
793b883e 3721 }
a84d0a3d 3722 sky2_led(sky2, MO_LED_NORM);
cd28ab6a
SH		 3723
3724 return 0;
3725}
3726
3727static void sky2_get_pauseparam(struct net_device *dev,
3728 struct ethtool_pauseparam *ecmd)
3729{
3730 struct sky2_port *sky2 = netdev_priv(dev);
3731
16ad91e1
SH		 3732 switch (sky2->flow_mode) {
3733 case FC_NONE:
3734 ecmd->tx_pause = ecmd->rx_pause = 0;
3735 break;
3736 case FC_TX:
3737 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
3738 break;
3739 case FC_RX:
3740 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
3741 break;
3742 case FC_BOTH:
3743 ecmd->tx_pause = ecmd->rx_pause = 1;
3744 }
3745
0ea065e5
SH		 3746 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_PAUSE)
3747 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
cd28ab6a
SH		 3748}
3749
3750static int sky2_set_pauseparam(struct net_device *dev,
3751 struct ethtool_pauseparam *ecmd)
3752{
3753 struct sky2_port *sky2 = netdev_priv(dev);
cd28ab6a 3754
0ea065e5
SH		 3755 if (ecmd->autoneg == AUTONEG_ENABLE)
3756 sky2->flags |= SKY2_FLAG_AUTO_PAUSE;
3757 else
3758 sky2->flags &= ~SKY2_FLAG_AUTO_PAUSE;
3759
16ad91e1 3760 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
cd28ab6a 3761
16ad91e1
SH		 3762 if (netif_running(dev))
3763 sky2_phy_reinit(sky2);
cd28ab6a 3764
2eaba1a2 3765 return 0;
cd28ab6a
SH		 3766}
3767
fb17358f
SH		 3768static int sky2_get_coalesce(struct net_device *dev,
3769 struct ethtool_coalesce *ecmd)
3770{
3771 struct sky2_port *sky2 = netdev_priv(dev);
3772 struct sky2_hw *hw = sky2->hw;
3773
3774 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
3775 ecmd->tx_coalesce_usecs = 0;
3776 else {
3777 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
3778 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
3779 }
3780 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
3781
3782 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
3783 ecmd->rx_coalesce_usecs = 0;
3784 else {
3785 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
3786 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
3787 }
3788 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
3789
3790 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
3791 ecmd->rx_coalesce_usecs_irq = 0;
3792 else {
3793 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
3794 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
3795 }
3796
3797 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
3798
3799 return 0;
3800}
3801
3802/* Note: this affect both ports */
3803static int sky2_set_coalesce(struct net_device *dev,
3804 struct ethtool_coalesce *ecmd)
3805{
3806 struct sky2_port *sky2 = netdev_priv(dev);
3807 struct sky2_hw *hw = sky2->hw;
77b3d6a2 3808 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
fb17358f 3809
77b3d6a2
SH		 3810 if (ecmd->tx_coalesce_usecs > tmax ||
3811 ecmd->rx_coalesce_usecs > tmax ||
3812 ecmd->rx_coalesce_usecs_irq > tmax)
fb17358f
SH		 3813 return -EINVAL;
3814
ee5f68fe 3815 if (ecmd->tx_max_coalesced_frames >= sky2->tx_ring_size-1)
fb17358f 3816 return -EINVAL;
ff81fbbe 3817 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
fb17358f 3818 return -EINVAL;
ff81fbbe 3819 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
fb17358f
SH		 3820 return -EINVAL;
3821
3822 if (ecmd->tx_coalesce_usecs == 0)
3823 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
3824 else {
3825 sky2_write32(hw, STAT_TX_TIMER_INI,
3826 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
3827 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3828 }
3829 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
3830
3831 if (ecmd->rx_coalesce_usecs == 0)
3832 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
3833 else {
3834 sky2_write32(hw, STAT_LEV_TIMER_INI,
3835 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
3836 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3837 }
3838 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
3839
3840 if (ecmd->rx_coalesce_usecs_irq == 0)
3841 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
3842 else {
d28d4870 3843 sky2_write32(hw, STAT_ISR_TIMER_INI,
fb17358f
SH		 3844 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
3845 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3846 }
3847 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
3848 return 0;
3849}
3850
793b883e
SH		 3851static void sky2_get_ringparam(struct net_device *dev,
3852 struct ethtool_ringparam *ering)
3853{
3854 struct sky2_port *sky2 = netdev_priv(dev);
3855
3856 ering->rx_max_pending = RX_MAX_PENDING;
3857 ering->rx_mini_max_pending = 0;
3858 ering->rx_jumbo_max_pending = 0;
ee5f68fe 3859 ering->tx_max_pending = TX_MAX_PENDING;
793b883e
SH		 3860
3861 ering->rx_pending = sky2->rx_pending;
3862 ering->rx_mini_pending = 0;
3863 ering->rx_jumbo_pending = 0;
3864 ering->tx_pending = sky2->tx_pending;
3865}
3866
3867static int sky2_set_ringparam(struct net_device *dev,
3868 struct ethtool_ringparam *ering)
3869{
3870 struct sky2_port *sky2 = netdev_priv(dev);
793b883e
SH		 3871
3872 if (ering->rx_pending > RX_MAX_PENDING ||
3873 ering->rx_pending < 8 ||
ee5f68fe
SH		 3874 ering->tx_pending < TX_MIN_PENDING ||
3875 ering->tx_pending > TX_MAX_PENDING)
793b883e
SH		 3876 return -EINVAL;
3877
af18d8b8 3878 sky2_detach(dev);
793b883e
SH		 3879
3880 sky2->rx_pending = ering->rx_pending;
3881 sky2->tx_pending = ering->tx_pending;
ee5f68fe 3882 sky2->tx_ring_size = roundup_pow_of_two(sky2->tx_pending+1);
793b883e 3883
af18d8b8 3884 return sky2_reattach(dev);
793b883e
SH		 3885}
3886
793b883e
SH		 3887static int sky2_get_regs_len(struct net_device *dev)
3888{
6e4cbb34 3889 return 0x4000;
793b883e
SH		 3890}
3891
c32bbff8
MM		 3892static int sky2_reg_access_ok(struct sky2_hw *hw, unsigned int b)
3893{
3894 /* This complicated switch statement is to make sure and
3895 * only access regions that are unreserved.
3896 * Some blocks are only valid on dual port cards.
3897 */
3898 switch (b) {
3899 /* second port */
3900 case 5: /* Tx Arbiter 2 */
3901 case 9: /* RX2 */
3902 case 14 ... 15: /* TX2 */
3903 case 17: case 19: /* Ram Buffer 2 */
3904 case 22 ... 23: /* Tx Ram Buffer 2 */
3905 case 25: /* Rx MAC Fifo 1 */
3906 case 27: /* Tx MAC Fifo 2 */
3907 case 31: /* GPHY 2 */
3908 case 40 ... 47: /* Pattern Ram 2 */
3909 case 52: case 54: /* TCP Segmentation 2 */
3910 case 112 ... 116: /* GMAC 2 */
3911 return hw->ports > 1;
3912
3913 case 0: /* Control */
3914 case 2: /* Mac address */
3915 case 4: /* Tx Arbiter 1 */
3916 case 7: /* PCI express reg */
3917 case 8: /* RX1 */
3918 case 12 ... 13: /* TX1 */
3919 case 16: case 18:/* Rx Ram Buffer 1 */
3920 case 20 ... 21: /* Tx Ram Buffer 1 */
3921 case 24: /* Rx MAC Fifo 1 */
3922 case 26: /* Tx MAC Fifo 1 */
3923 case 28 ... 29: /* Descriptor and status unit */
3924 case 30: /* GPHY 1*/
3925 case 32 ... 39: /* Pattern Ram 1 */
3926 case 48: case 50: /* TCP Segmentation 1 */
3927 case 56 ... 60: /* PCI space */
3928 case 80 ... 84: /* GMAC 1 */
3929 return 1;
3930
3931 default:
3932 return 0;
3933 }
3934}
3935
793b883e
SH		 3936/*
3937 * Returns copy of control register region
3ead5db7 3938 * Note: ethtool_get_regs always provides full size (16k) buffer
793b883e
SH		 3939 */
3940static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
3941 void *p)
3942{
3943 const struct sky2_port *sky2 = netdev_priv(dev);
793b883e 3944 const void __iomem *io = sky2->hw->regs;
295b54c4 3945 unsigned int b;
793b883e
SH		 3946
3947 regs->version = 1;
793b883e 3948
295b54c4 3949 for (b = 0; b < 128; b++) {
c32bbff8
MM		 3950 /* skip poisonous diagnostic ram region in block 3 */
3951 if (b == 3)
295b54c4 3952 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
c32bbff8 3953 else if (sky2_reg_access_ok(sky2->hw, b))
295b54c4 3954 memcpy_fromio(p, io, 128);
c32bbff8 3955 else
295b54c4 3956 memset(p, 0, 128);
3ead5db7 3957
295b54c4
SH		 3958 p += 128;
3959 io += 128;
3960 }
793b883e 3961}
cd28ab6a 3962
b628ed98
SH		 3963/* In order to do Jumbo packets on these chips, need to turn off the
3964 * transmit store/forward. Therefore checksum offload won't work.
3965 */
3966static int no_tx_offload(struct net_device *dev)
3967{
3968 const struct sky2_port *sky2 = netdev_priv(dev);
3969 const struct sky2_hw *hw = sky2->hw;
3970
69161611 3971 return dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U;
b628ed98
SH		 3972}
3973
3974static int sky2_set_tx_csum(struct net_device *dev, u32 data)
3975{
3976 if (data && no_tx_offload(dev))
3977 return -EINVAL;
3978
3979 return ethtool_op_set_tx_csum(dev, data);
3980}
3981
3982
3983static int sky2_set_tso(struct net_device *dev, u32 data)
3984{
3985 if (data && no_tx_offload(dev))
3986 return -EINVAL;
3987
3988 return ethtool_op_set_tso(dev, data);
3989}
3990
f4331a6d
SH		 3991static int sky2_get_eeprom_len(struct net_device *dev)
3992{
3993 struct sky2_port *sky2 = netdev_priv(dev);
b32f40c4 3994 struct sky2_hw *hw = sky2->hw;
f4331a6d
SH		 3995 u16 reg2;
3996
b32f40c4 3997 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
f4331a6d
SH		 3998 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
3999}
4000
1413235c 4001static int sky2_vpd_wait(const struct sky2_hw *hw, int cap, u16 busy)
f4331a6d 4002{
1413235c 4003 unsigned long start = jiffies;
f4331a6d 4004
1413235c
SH		 4005 while ( (sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F) == busy) {
4006 /* Can take up to 10.6 ms for write */
4007 if (time_after(jiffies, start + HZ/4)) {
4008 dev_err(&hw->pdev->dev, PFX "VPD cycle timed out");
4009 return -ETIMEDOUT;
4010 }
4011 mdelay(1);
4012 }
167f53d0 4013
1413235c
SH		 4014 return 0;
4015}
167f53d0 4016
1413235c
SH		 4017static int sky2_vpd_read(struct sky2_hw *hw, int cap, void *data,
4018 u16 offset, size_t length)
4019{
4020 int rc = 0;
4021
4022 while (length > 0) {
4023 u32 val;
4024
4025 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
4026 rc = sky2_vpd_wait(hw, cap, 0);
4027 if (rc)
4028 break;
4029
4030 val = sky2_pci_read32(hw, cap + PCI_VPD_DATA);
4031
4032 memcpy(data, &val, min(sizeof(val), length));
4033 offset += sizeof(u32);
4034 data += sizeof(u32);
4035 length -= sizeof(u32);
4036 }
4037
4038 return rc;
f4331a6d
SH		 4039}
4040
1413235c
SH		 4041static int sky2_vpd_write(struct sky2_hw *hw, int cap, const void *data,
4042 u16 offset, unsigned int length)
f4331a6d 4043{
1413235c
SH		 4044 unsigned int i;
4045 int rc = 0;
4046
4047 for (i = 0; i < length; i += sizeof(u32)) {
4048 u32 val = *(u32 *)(data + i);
4049
4050 sky2_pci_write32(hw, cap + PCI_VPD_DATA, val);
4051 sky2_pci_write32(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
4052
4053 rc = sky2_vpd_wait(hw, cap, PCI_VPD_ADDR_F);
4054 if (rc)
4055 break;
4056 }
4057 return rc;
f4331a6d
SH		 4058}
4059
4060static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4061 u8 *data)
4062{
4063 struct sky2_port *sky2 = netdev_priv(dev);
4064 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
f4331a6d
SH		 4065
4066 if (!cap)
4067 return -EINVAL;
4068
4069 eeprom->magic = SKY2_EEPROM_MAGIC;
4070
1413235c 4071 return sky2_vpd_read(sky2->hw, cap, data, eeprom->offset, eeprom->len);
f4331a6d
SH		 4072}
4073
4074static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4075 u8 *data)
4076{
4077 struct sky2_port *sky2 = netdev_priv(dev);
4078 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
f4331a6d
SH		 4079
4080 if (!cap)
4081 return -EINVAL;
4082
4083 if (eeprom->magic != SKY2_EEPROM_MAGIC)
4084 return -EINVAL;
4085
1413235c
SH		 4086 /* Partial writes not supported */
4087 if ((eeprom->offset & 3) || (eeprom->len & 3))
4088 return -EINVAL;
f4331a6d 4089
1413235c 4090 return sky2_vpd_write(sky2->hw, cap, data, eeprom->offset, eeprom->len);
f4331a6d
SH		 4091}
4092
4093
7282d491 4094static const struct ethtool_ops sky2_ethtool_ops = {
f4331a6d
SH		 4095 .get_settings = sky2_get_settings,
4096 .set_settings = sky2_set_settings,
4097 .get_drvinfo = sky2_get_drvinfo,
4098 .get_wol = sky2_get_wol,
4099 .set_wol = sky2_set_wol,
4100 .get_msglevel = sky2_get_msglevel,
4101 .set_msglevel = sky2_set_msglevel,
4102 .nway_reset = sky2_nway_reset,
4103 .get_regs_len = sky2_get_regs_len,
4104 .get_regs = sky2_get_regs,
4105 .get_link = ethtool_op_get_link,
4106 .get_eeprom_len = sky2_get_eeprom_len,
4107 .get_eeprom = sky2_get_eeprom,
4108 .set_eeprom = sky2_set_eeprom,
f4331a6d 4109 .set_sg = ethtool_op_set_sg,
f4331a6d 4110 .set_tx_csum = sky2_set_tx_csum,
f4331a6d
SH		 4111 .set_tso = sky2_set_tso,
4112 .get_rx_csum = sky2_get_rx_csum,
4113 .set_rx_csum = sky2_set_rx_csum,
4114 .get_strings = sky2_get_strings,
4115 .get_coalesce = sky2_get_coalesce,
4116 .set_coalesce = sky2_set_coalesce,
4117 .get_ringparam = sky2_get_ringparam,
4118 .set_ringparam = sky2_set_ringparam,
cd28ab6a
SH		 4119 .get_pauseparam = sky2_get_pauseparam,
4120 .set_pauseparam = sky2_set_pauseparam,
f4331a6d 4121 .phys_id = sky2_phys_id,
b9f2c044 4122 .get_sset_count = sky2_get_sset_count,
cd28ab6a
SH		 4123 .get_ethtool_stats = sky2_get_ethtool_stats,
4124};
4125
3cf26753
SH		 4126#ifdef CONFIG_SKY2_DEBUG
4127
4128static struct dentry *sky2_debug;
4129
e4c2abe2
SH		 4130
4131/*
4132 * Read and parse the first part of Vital Product Data
4133 */
4134#define VPD_SIZE 128
4135#define VPD_MAGIC 0x82
4136
4137static const struct vpd_tag {
4138 char tag[2];
4139 char *label;
4140} vpd_tags[] = {
4141 { "PN", "Part Number" },
4142 { "EC", "Engineering Level" },
4143 { "MN", "Manufacturer" },
4144 { "SN", "Serial Number" },
4145 { "YA", "Asset Tag" },
4146 { "VL", "First Error Log Message" },
4147 { "VF", "Second Error Log Message" },
4148 { "VB", "Boot Agent ROM Configuration" },
4149 { "VE", "EFI UNDI Configuration" },
4150};
4151
4152static void sky2_show_vpd(struct seq_file *seq, struct sky2_hw *hw)
4153{
4154 size_t vpd_size;
4155 loff_t offs;
4156 u8 len;
4157 unsigned char *buf;
4158 u16 reg2;
4159
4160 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4161 vpd_size = 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4162
4163 seq_printf(seq, "%s Product Data\n", pci_name(hw->pdev));
4164 buf = kmalloc(vpd_size, GFP_KERNEL);
4165 if (!buf) {
4166 seq_puts(seq, "no memory!\n");
4167 return;
4168 }
4169
4170 if (pci_read_vpd(hw->pdev, 0, vpd_size, buf) < 0) {
4171 seq_puts(seq, "VPD read failed\n");
4172 goto out;
4173 }
4174
4175 if (buf[0] != VPD_MAGIC) {
4176 seq_printf(seq, "VPD tag mismatch: %#x\n", buf[0]);
4177 goto out;
4178 }
4179 len = buf[1];
4180 if (len == 0 || len > vpd_size - 4) {
4181 seq_printf(seq, "Invalid id length: %d\n", len);
4182 goto out;
4183 }
4184
4185 seq_printf(seq, "%.*s\n", len, buf + 3);
4186 offs = len + 3;
4187
4188 while (offs < vpd_size - 4) {
4189 int i;
4190
4191 if (!memcmp("RW", buf + offs, 2)) /* end marker */
4192 break;
4193 len = buf[offs + 2];
4194 if (offs + len + 3 >= vpd_size)
4195 break;
4196
4197 for (i = 0; i < ARRAY_SIZE(vpd_tags); i++) {
4198 if (!memcmp(vpd_tags[i].tag, buf + offs, 2)) {
4199 seq_printf(seq, " %s: %.*s\n",
4200 vpd_tags[i].label, len, buf + offs + 3);
4201 break;
4202 }
4203 }
4204 offs += len + 3;
4205 }
4206out:
4207 kfree(buf);
4208}
4209
3cf26753
SH		 4210static int sky2_debug_show(struct seq_file *seq, void *v)
4211{
4212 struct net_device *dev = seq->private;
4213 const struct sky2_port *sky2 = netdev_priv(dev);
bea3348e 4214 struct sky2_hw *hw = sky2->hw;
3cf26753
SH		 4215 unsigned port = sky2->port;
4216 unsigned idx, last;
4217 int sop;
4218
e4c2abe2 4219 sky2_show_vpd(seq, hw);
3cf26753 4220
e4c2abe2 4221 seq_printf(seq, "\nIRQ src=%x mask=%x control=%x\n",
3cf26753
SH		 4222 sky2_read32(hw, B0_ISRC),
4223 sky2_read32(hw, B0_IMSK),
4224 sky2_read32(hw, B0_Y2_SP_ICR));
4225
e4c2abe2
SH		 4226 if (!netif_running(dev)) {
4227 seq_printf(seq, "network not running\n");
4228 return 0;
4229 }
4230
bea3348e 4231 napi_disable(&hw->napi);
3cf26753
SH		 4232 last = sky2_read16(hw, STAT_PUT_IDX);
4233
4234 if (hw->st_idx == last)
4235 seq_puts(seq, "Status ring (empty)\n");
4236 else {
4237 seq_puts(seq, "Status ring\n");
4238 for (idx = hw->st_idx; idx != last && idx < STATUS_RING_SIZE;
4239 idx = RING_NEXT(idx, STATUS_RING_SIZE)) {
4240 const struct sky2_status_le *le = hw->st_le + idx;
4241 seq_printf(seq, "[%d] %#x %d %#x\n",
4242 idx, le->opcode, le->length, le->status);
4243 }
4244 seq_puts(seq, "\n");
4245 }
4246
4247 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
4248 sky2->tx_cons, sky2->tx_prod,
4249 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
4250 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
4251
4252 /* Dump contents of tx ring */
4253 sop = 1;
ee5f68fe
SH		 4254 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < sky2->tx_ring_size;
4255 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
3cf26753
SH		 4256 const struct sky2_tx_le *le = sky2->tx_le + idx;
4257 u32 a = le32_to_cpu(le->addr);
4258
4259 if (sop)
4260 seq_printf(seq, "%u:", idx);
4261 sop = 0;
4262
4263 switch(le->opcode & ~HW_OWNER) {
4264 case OP_ADDR64:
4265 seq_printf(seq, " %#x:", a);
4266 break;
4267 case OP_LRGLEN:
4268 seq_printf(seq, " mtu=%d", a);
4269 break;
4270 case OP_VLAN:
4271 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
4272 break;
4273 case OP_TCPLISW:
4274 seq_printf(seq, " csum=%#x", a);
4275 break;
4276 case OP_LARGESEND:
4277 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
4278 break;
4279 case OP_PACKET:
4280 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
4281 break;
4282 case OP_BUFFER:
4283 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
4284 break;
4285 default:
4286 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
4287 a, le16_to_cpu(le->length));
4288 }
4289
4290 if (le->ctrl & EOP) {
4291 seq_putc(seq, '\n');
4292 sop = 1;
4293 }
4294 }
4295
4296 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
4297 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
c409c34b 4298 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
3cf26753
SH		 4299 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
4300
d1d08d12 4301 sky2_read32(hw, B0_Y2_SP_LISR);
bea3348e 4302 napi_enable(&hw->napi);
3cf26753
SH		 4303 return 0;
4304}
4305
4306static int sky2_debug_open(struct inode *inode, struct file *file)
4307{
4308 return single_open(file, sky2_debug_show, inode->i_private);
4309}
4310
4311static const struct file_operations sky2_debug_fops = {
4312 .owner = THIS_MODULE,
4313 .open = sky2_debug_open,
4314 .read = seq_read,
4315 .llseek = seq_lseek,
4316 .release = single_release,
4317};
4318
4319/*
4320 * Use network device events to create/remove/rename
4321 * debugfs file entries
4322 */
4323static int sky2_device_event(struct notifier_block *unused,
4324 unsigned long event, void *ptr)
4325{
4326 struct net_device *dev = ptr;
5b296bc9 4327 struct sky2_port *sky2 = netdev_priv(dev);
3cf26753 4328
1436b301 4329 if (dev->netdev_ops->ndo_open != sky2_up || !sky2_debug)
5b296bc9 4330 return NOTIFY_DONE;
3cf26753 4331
5b296bc9
SH		 4332 switch(event) {
4333 case NETDEV_CHANGENAME:
4334 if (sky2->debugfs) {
4335 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
4336 sky2_debug, dev->name);
4337 }
4338 break;
3cf26753 4339
5b296bc9
SH		 4340 case NETDEV_GOING_DOWN:
4341 if (sky2->debugfs) {
4342 printk(KERN_DEBUG PFX "%s: remove debugfs\n",
4343 dev->name);
4344 debugfs_remove(sky2->debugfs);
4345 sky2->debugfs = NULL;
3cf26753 4346 }
5b296bc9
SH		 4347 break;
4348
4349 case NETDEV_UP:
4350 sky2->debugfs = debugfs_create_file(dev->name, S_IRUGO,
4351 sky2_debug, dev,
4352 &sky2_debug_fops);
4353 if (IS_ERR(sky2->debugfs))
4354 sky2->debugfs = NULL;
3cf26753
SH		 4355 }
4356
4357 return NOTIFY_DONE;
4358}
4359
4360static struct notifier_block sky2_notifier = {
4361 .notifier_call = sky2_device_event,
4362};
4363
4364
4365static __init void sky2_debug_init(void)
4366{
4367 struct dentry *ent;
4368
4369 ent = debugfs_create_dir("sky2", NULL);
4370 if (!ent || IS_ERR(ent))
4371 return;
4372
4373 sky2_debug = ent;
4374 register_netdevice_notifier(&sky2_notifier);
4375}
4376
4377static __exit void sky2_debug_cleanup(void)
4378{
4379 if (sky2_debug) {
4380 unregister_netdevice_notifier(&sky2_notifier);
4381 debugfs_remove(sky2_debug);
4382 sky2_debug = NULL;
4383 }
4384}
4385
4386#else
4387#define sky2_debug_init()
4388#define sky2_debug_cleanup()
4389#endif
4390
1436b301
SH		 4391/* Two copies of network device operations to handle special case of
4392 not allowing netpoll on second port */
4393static const struct net_device_ops sky2_netdev_ops[2] = {
4394 {
4395 .ndo_open = sky2_up,
4396 .ndo_stop = sky2_down,
00829823 4397 .ndo_start_xmit = sky2_xmit_frame,
1436b301
SH		 4398 .ndo_do_ioctl = sky2_ioctl,
4399 .ndo_validate_addr = eth_validate_addr,
4400 .ndo_set_mac_address = sky2_set_mac_address,
4401 .ndo_set_multicast_list = sky2_set_multicast,
4402 .ndo_change_mtu = sky2_change_mtu,
4403 .ndo_tx_timeout = sky2_tx_timeout,
4404#ifdef SKY2_VLAN_TAG_USED
4405 .ndo_vlan_rx_register = sky2_vlan_rx_register,
4406#endif
4407#ifdef CONFIG_NET_POLL_CONTROLLER
4408 .ndo_poll_controller = sky2_netpoll,
4409#endif
4410 },
4411 {
4412 .ndo_open = sky2_up,
4413 .ndo_stop = sky2_down,
00829823 4414 .ndo_start_xmit = sky2_xmit_frame,
1436b301
SH		 4415 .ndo_do_ioctl = sky2_ioctl,
4416 .ndo_validate_addr = eth_validate_addr,
4417 .ndo_set_mac_address = sky2_set_mac_address,
4418 .ndo_set_multicast_list = sky2_set_multicast,
4419 .ndo_change_mtu = sky2_change_mtu,
4420 .ndo_tx_timeout = sky2_tx_timeout,
4421#ifdef SKY2_VLAN_TAG_USED
4422 .ndo_vlan_rx_register = sky2_vlan_rx_register,
4423#endif
4424 },
4425};
3cf26753 4426
cd28ab6a
SH		 4427/* Initialize network device */
4428static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
e3173832 4429 unsigned port,
be63a21c 4430 int highmem, int wol)
cd28ab6a
SH		 4431{
4432 struct sky2_port *sky2;
4433 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
4434
4435 if (!dev) {
898eb71c 4436 dev_err(&hw->pdev->dev, "etherdev alloc failed\n");
cd28ab6a
SH		 4437 return NULL;
4438 }
4439
cd28ab6a 4440 SET_NETDEV_DEV(dev, &hw->pdev->dev);
ef743d33 4441 dev->irq = hw->pdev->irq;
cd28ab6a 4442 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
cd28ab6a 4443 dev->watchdog_timeo = TX_WATCHDOG;
1436b301 4444 dev->netdev_ops = &sky2_netdev_ops[port];
cd28ab6a
SH		 4445
4446 sky2 = netdev_priv(dev);
4447 sky2->netdev = dev;
4448 sky2->hw = hw;
4449 sky2->msg_enable = netif_msg_init(debug, default_msg);
4450
cd28ab6a 4451 /* Auto speed and flow control */
0ea065e5
SH		 4452 sky2->flags = SKY2_FLAG_AUTO_SPEED | SKY2_FLAG_AUTO_PAUSE;
4453 if (hw->chip_id != CHIP_ID_YUKON_XL)
4454 sky2->flags |= SKY2_FLAG_RX_CHECKSUM;
4455
16ad91e1
SH		 4456 sky2->flow_mode = FC_BOTH;
4457
cd28ab6a
SH		 4458 sky2->duplex = -1;
4459 sky2->speed = -1;
4460 sky2->advertising = sky2_supported_modes(hw);
be63a21c 4461 sky2->wol = wol;
75d070c5 4462
e07b1aa8 4463 spin_lock_init(&sky2->phy_lock);
ee5f68fe 4464
793b883e 4465 sky2->tx_pending = TX_DEF_PENDING;
ee5f68fe 4466 sky2->tx_ring_size = roundup_pow_of_two(TX_DEF_PENDING+1);
290d4de5 4467 sky2->rx_pending = RX_DEF_PENDING;
cd28ab6a
SH		 4468
4469 hw->dev[port] = dev;
4470
4471 sky2->port = port;
4472
4a50a876 4473 dev->features |= NETIF_F_TSO | NETIF_F_IP_CSUM | NETIF_F_SG;
cd28ab6a
SH		 4474 if (highmem)
4475 dev->features |= NETIF_F_HIGHDMA;
cd28ab6a 4476
d1f13708 4477#ifdef SKY2_VLAN_TAG_USED
d6c9bc1e
SH		 4478 /* The workaround for FE+ status conflicts with VLAN tag detection. */
4479 if (!(sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
4480 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0)) {
4481 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
d6c9bc1e 4482 }
d1f13708 4483#endif
4484
cd28ab6a 4485 /* read the mac address */
793b883e 4486 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
2995bfb7 4487 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
cd28ab6a 4488
cd28ab6a
SH		 4489 return dev;
4490}
4491
28bd181a 4492static void __devinit sky2_show_addr(struct net_device *dev)
cd28ab6a
SH		 4493{
4494 const struct sky2_port *sky2 = netdev_priv(dev);
4495
4496 if (netif_msg_probe(sky2))
e174961c
JB		 4497 printk(KERN_INFO PFX "%s: addr %pM\n",
4498 dev->name, dev->dev_addr);
cd28ab6a
SH		 4499}
4500
fb2690a9 4501/* Handle software interrupt used during MSI test */
7d12e780 4502static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
fb2690a9
SH		 4503{
4504 struct sky2_hw *hw = dev_id;
4505 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4506
4507 if (status == 0)
4508 return IRQ_NONE;
4509
4510 if (status & Y2_IS_IRQ_SW) {
ea76e635 4511 hw->flags |= SKY2_HW_USE_MSI;
fb2690a9
SH		 4512 wake_up(&hw->msi_wait);
4513 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4514 }
4515 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4516
4517 return IRQ_HANDLED;
4518}
4519
4520/* Test interrupt path by forcing a a software IRQ */
4521static int __devinit sky2_test_msi(struct sky2_hw *hw)
4522{
4523 struct pci_dev *pdev = hw->pdev;
4524 int err;
4525
bb507fe1 4526 init_waitqueue_head (&hw->msi_wait);
4527
fb2690a9
SH		 4528 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4529
b0a20ded 4530 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
fb2690a9 4531 if (err) {
b02a9258 4532 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
fb2690a9
SH		 4533 return err;
4534 }
4535
fb2690a9 4536 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
bb507fe1 4537 sky2_read8(hw, B0_CTST);
fb2690a9 4538
ea76e635 4539 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
fb2690a9 4540
ea76e635 4541 if (!(hw->flags & SKY2_HW_USE_MSI)) {
fb2690a9 4542 /* MSI test failed, go back to INTx mode */
b02a9258
SH		 4543 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4544 "switching to INTx mode.\n");
fb2690a9
SH		 4545
4546 err = -EOPNOTSUPP;
4547 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4548 }
4549
4550 sky2_write32(hw, B0_IMSK, 0);
2bffc23a 4551 sky2_read32(hw, B0_IMSK);
fb2690a9
SH		 4552
4553 free_irq(pdev->irq, hw);
4554
4555 return err;
4556}
4557
c7127a34
SH		 4558/* This driver supports yukon2 chipset only */
4559static const char *sky2_name(u8 chipid, char *buf, int sz)
4560{
4561 const char *name[] = {
4562 "XL", /* 0xb3 */
4563 "EC Ultra", /* 0xb4 */
4564 "Extreme", /* 0xb5 */
4565 "EC", /* 0xb6 */
4566 "FE", /* 0xb7 */
4567 "FE+", /* 0xb8 */
4568 "Supreme", /* 0xb9 */
0ce8b98d 4569 "UL 2", /* 0xba */
0f5aac70
SH		 4570 "Unknown", /* 0xbb */
4571 "Optima", /* 0xbc */
c7127a34
SH		 4572 };
4573
dae3a511 4574 if (chipid >= CHIP_ID_YUKON_XL && chipid <= CHIP_ID_YUKON_OPT)
c7127a34
SH		 4575 strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
4576 else
4577 snprintf(buf, sz, "(chip %#x)", chipid);
4578 return buf;
4579}
4580
cd28ab6a
SH		 4581static int __devinit sky2_probe(struct pci_dev *pdev,
4582 const struct pci_device_id *ent)
4583{
7f60c64b 4584 struct net_device *dev;
cd28ab6a 4585 struct sky2_hw *hw;
be63a21c 4586 int err, using_dac = 0, wol_default;
3834507d 4587 u32 reg;
c7127a34 4588 char buf1[16];
cd28ab6a 4589
793b883e
SH		 4590 err = pci_enable_device(pdev);
4591 if (err) {
b02a9258 4592 dev_err(&pdev->dev, "cannot enable PCI device\n");
cd28ab6a
SH		 4593 goto err_out;
4594 }
4595
6cc90a5a
SH		 4596 /* Get configuration information
4597 * Note: only regular PCI config access once to test for HW issues
4598 * other PCI access through shared memory for speed and to
4599 * avoid MMCONFIG problems.
4600 */
4601 err = pci_read_config_dword(pdev, PCI_DEV_REG2, &reg);
4602 if (err) {
4603 dev_err(&pdev->dev, "PCI read config failed\n");
4604 goto err_out;
4605 }
4606
4607 if (~reg == 0) {
4608 dev_err(&pdev->dev, "PCI configuration read error\n");
4609 goto err_out;
4610 }
4611
793b883e
SH		 4612 err = pci_request_regions(pdev, DRV_NAME);
4613 if (err) {
b02a9258 4614 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
44a1d2e5 4615 goto err_out_disable;
cd28ab6a
SH		 4616 }
4617
4618 pci_set_master(pdev);
4619
d1f3d4dd 4620 if (sizeof(dma_addr_t) > sizeof(u32) &&
6a35528a 4621 !(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))) {
d1f3d4dd 4622 using_dac = 1;
6a35528a 4623 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
d1f3d4dd 4624 if (err < 0) {
b02a9258
SH		 4625 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4626 "for consistent allocations\n");
d1f3d4dd
SH		 4627 goto err_out_free_regions;
4628 }
d1f3d4dd 4629 } else {
284901a9 4630 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
cd28ab6a 4631 if (err) {
b02a9258 4632 dev_err(&pdev->dev, "no usable DMA configuration\n");
cd28ab6a
SH		 4633 goto err_out_free_regions;
4634 }
4635 }
d1f3d4dd 4636
3834507d
SH		 4637
4638#ifdef __BIG_ENDIAN
4639 /* The sk98lin vendor driver uses hardware byte swapping but
4640 * this driver uses software swapping.
4641 */
4642 reg &= ~PCI_REV_DESC;
4643 err = pci_write_config_dword(pdev,PCI_DEV_REG2, reg);
4644 if (err) {
4645 dev_err(&pdev->dev, "PCI write config failed\n");
4646 goto err_out_free_regions;
4647 }
4648#endif
4649
9d731d77 4650 wol_default = device_may_wakeup(&pdev->dev) ? WAKE_MAGIC : 0;
be63a21c 4651
cd28ab6a 4652 err = -ENOMEM;
66466797
SH		 4653
4654 hw = kzalloc(sizeof(*hw) + strlen(DRV_NAME "@pci:")
4655 + strlen(pci_name(pdev)) + 1, GFP_KERNEL);
cd28ab6a 4656 if (!hw) {
b02a9258 4657 dev_err(&pdev->dev, "cannot allocate hardware struct\n");
cd28ab6a
SH		 4658 goto err_out_free_regions;
4659 }
4660
cd28ab6a 4661 hw->pdev = pdev;
66466797 4662 sprintf(hw->irq_name, DRV_NAME "@pci:%s", pci_name(pdev));
cd28ab6a
SH		 4663
4664 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
4665 if (!hw->regs) {
b02a9258 4666 dev_err(&pdev->dev, "cannot map device registers\n");
cd28ab6a
SH		 4667 goto err_out_free_hw;
4668 }
4669
08c06d8a 4670 /* ring for status responses */
167f53d0 4671 hw->st_le = pci_alloc_consistent(pdev, STATUS_LE_BYTES, &hw->st_dma);
08c06d8a
SH		 4672 if (!hw->st_le)
4673 goto err_out_iounmap;
4674
e3173832 4675 err = sky2_init(hw);
cd28ab6a 4676 if (err)
793b883e 4677 goto err_out_iounmap;
cd28ab6a 4678
c844d483
SH		 4679 dev_info(&pdev->dev, "Yukon-2 %s chip revision %d\n",
4680 sky2_name(hw->chip_id, buf1, sizeof(buf1)), hw->chip_rev);
cd28ab6a 4681
e3173832
SH		 4682 sky2_reset(hw);
4683
be63a21c 4684 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
7f60c64b 4685 if (!dev) {
4686 err = -ENOMEM;
cd28ab6a 4687 goto err_out_free_pci;
7f60c64b 4688 }
cd28ab6a 4689
9fa1b1f3
SH		 4690 if (!disable_msi && pci_enable_msi(pdev) == 0) {
4691 err = sky2_test_msi(hw);
4692 if (err == -EOPNOTSUPP)
4693 pci_disable_msi(pdev);
4694 else if (err)
4695 goto err_out_free_netdev;
4696 }
4697
793b883e
SH		 4698 err = register_netdev(dev);
4699 if (err) {
b02a9258 4700 dev_err(&pdev->dev, "cannot register net device\n");
cd28ab6a
SH		 4701 goto err_out_free_netdev;
4702 }
4703
33cb7d33
BP		 4704 netif_carrier_off(dev);
4705
6de16237
SH		 4706 netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
4707
ea76e635
SH		 4708 err = request_irq(pdev->irq, sky2_intr,
4709 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
66466797 4710 hw->irq_name, hw);
9fa1b1f3 4711 if (err) {
b02a9258 4712 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
9fa1b1f3
SH		 4713 goto err_out_unregister;
4714 }
4715 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
6de16237 4716 napi_enable(&hw->napi);
9fa1b1f3 4717
cd28ab6a
SH		 4718 sky2_show_addr(dev);
4719
7f60c64b 4720 if (hw->ports > 1) {
4721 struct net_device *dev1;
4722
ca519274 4723 err = -ENOMEM;
be63a21c 4724 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
ca519274
SH		 4725 if (dev1 && (err = register_netdev(dev1)) == 0)
4726 sky2_show_addr(dev1);
4727 else {
b02a9258
SH		 4728 dev_warn(&pdev->dev,
4729 "register of second port failed (%d)\n", err);
cd28ab6a 4730 hw->dev[1] = NULL;
ca519274
SH		 4731 hw->ports = 1;
4732 if (dev1)
4733 free_netdev(dev1);
4734 }
cd28ab6a
SH		 4735 }
4736
32c2c300 4737 setup_timer(&hw->watchdog_timer, sky2_watchdog, (unsigned long) hw);
81906791
SH		 4738 INIT_WORK(&hw->restart_work, sky2_restart);
4739
793b883e 4740 pci_set_drvdata(pdev, hw);
1ae861e6 4741 pdev->d3_delay = 150;
793b883e 4742
cd28ab6a
SH		 4743 return 0;
4744
793b883e 4745err_out_unregister:
ea76e635 4746 if (hw->flags & SKY2_HW_USE_MSI)
b0a20ded 4747 pci_disable_msi(pdev);
793b883e 4748 unregister_netdev(dev);
cd28ab6a
SH		 4749err_out_free_netdev:
4750 free_netdev(dev);
cd28ab6a 4751err_out_free_pci:
793b883e 4752 sky2_write8(hw, B0_CTST, CS_RST_SET);
167f53d0 4753 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
cd28ab6a
SH		 4754err_out_iounmap:
4755 iounmap(hw->regs);
4756err_out_free_hw:
4757 kfree(hw);
4758err_out_free_regions:
4759 pci_release_regions(pdev);
44a1d2e5 4760err_out_disable:
cd28ab6a 4761 pci_disable_device(pdev);
cd28ab6a 4762err_out:
549a68c3 4763 pci_set_drvdata(pdev, NULL);
cd28ab6a
SH		 4764 return err;
4765}
4766
4767static void __devexit sky2_remove(struct pci_dev *pdev)
4768{
793b883e 4769 struct sky2_hw *hw = pci_get_drvdata(pdev);
6de16237 4770 int i;
cd28ab6a 4771
793b883e 4772 if (!hw)
cd28ab6a
SH		 4773 return;
4774
32c2c300 4775 del_timer_sync(&hw->watchdog_timer);
6de16237 4776 cancel_work_sync(&hw->restart_work);
d27ed387 4777
b877fe28 4778 for (i = hw->ports-1; i >= 0; --i)
6de16237 4779 unregister_netdev(hw->dev[i]);
81906791 4780
d27ed387 4781 sky2_write32(hw, B0_IMSK, 0);
cd28ab6a 4782
ae306cca
SH		 4783 sky2_power_aux(hw);
4784
793b883e 4785 sky2_write8(hw, B0_CTST, CS_RST_SET);
5afa0a9c 4786 sky2_read8(hw, B0_CTST);
cd28ab6a
SH		 4787
4788 free_irq(pdev->irq, hw);
ea76e635 4789 if (hw->flags & SKY2_HW_USE_MSI)
b0a20ded 4790 pci_disable_msi(pdev);
793b883e 4791 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
cd28ab6a
SH		 4792 pci_release_regions(pdev);
4793 pci_disable_device(pdev);
793b883e 4794
b877fe28 4795 for (i = hw->ports-1; i >= 0; --i)
6de16237
SH		 4796 free_netdev(hw->dev[i]);
4797
cd28ab6a
SH		 4798 iounmap(hw->regs);
4799 kfree(hw);
5afa0a9c 4800
cd28ab6a
SH		 4801 pci_set_drvdata(pdev, NULL);
4802}
4803
4804#ifdef CONFIG_PM
4805static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
4806{
793b883e 4807 struct sky2_hw *hw = pci_get_drvdata(pdev);
e3173832 4808 int i, wol = 0;
cd28ab6a 4809
549a68c3
SH		 4810 if (!hw)
4811 return 0;
4812
063a0b38
SH		 4813 del_timer_sync(&hw->watchdog_timer);
4814 cancel_work_sync(&hw->restart_work);
4815
19720737 4816 rtnl_lock();
f05267e7 4817 for (i = 0; i < hw->ports; i++) {
cd28ab6a 4818 struct net_device *dev = hw->dev[i];
e3173832 4819 struct sky2_port *sky2 = netdev_priv(dev);
cd28ab6a 4820
af18d8b8 4821 sky2_detach(dev);
e3173832
SH		 4822
4823 if (sky2->wol)
4824 sky2_wol_init(sky2);
4825
4826 wol |= sky2->wol;
cd28ab6a
SH		 4827 }
4828
8ab8fca2 4829 sky2_write32(hw, B0_IMSK, 0);
6de16237 4830 napi_disable(&hw->napi);
ae306cca 4831 sky2_power_aux(hw);
19720737 4832 rtnl_unlock();
e3173832 4833
d374c1c1 4834 pci_save_state(pdev);
e3173832 4835 pci_enable_wake(pdev, pci_choose_state(pdev, state), wol);
f71eb1a2 4836 pci_set_power_state(pdev, pci_choose_state(pdev, state));
ae306cca 4837
2ccc99b7 4838 return 0;
cd28ab6a
SH		 4839}
4840
4841static int sky2_resume(struct pci_dev *pdev)
4842{
793b883e 4843 struct sky2_hw *hw = pci_get_drvdata(pdev);
08c06d8a 4844 int i, err;
cd28ab6a 4845
549a68c3
SH		 4846 if (!hw)
4847 return 0;
4848
f71eb1a2
SH		 4849 err = pci_set_power_state(pdev, PCI_D0);
4850 if (err)
4851 goto out;
ae306cca
SH		 4852
4853 err = pci_restore_state(pdev);
4854 if (err)
4855 goto out;
4856
cd28ab6a 4857 pci_enable_wake(pdev, PCI_D0, 0);
1ad5b4a5
SH		 4858
4859 /* Re-enable all clocks */
05745c4a
SH		 4860 if (hw->chip_id == CHIP_ID_YUKON_EX ||
4861 hw->chip_id == CHIP_ID_YUKON_EC_U ||
4862 hw->chip_id == CHIP_ID_YUKON_FE_P)
b32f40c4 4863 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
1ad5b4a5 4864
e3173832 4865 sky2_reset(hw);
8ab8fca2 4866 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
6de16237 4867 napi_enable(&hw->napi);
8ab8fca2 4868
af18d8b8 4869 rtnl_lock();
f05267e7 4870 for (i = 0; i < hw->ports; i++) {
af18d8b8
SH		 4871 err = sky2_reattach(hw->dev[i]);
4872 if (err)
4873 goto out;
cd28ab6a 4874 }
af18d8b8 4875 rtnl_unlock();
eb35cf60 4876
ae306cca 4877 return 0;
08c06d8a 4878out:
af18d8b8
SH		 4879 rtnl_unlock();
4880
b02a9258 4881 dev_err(&pdev->dev, "resume failed (%d)\n", err);
ae306cca 4882 pci_disable_device(pdev);
08c06d8a 4883 return err;
cd28ab6a
SH		 4884}
4885#endif
4886
e3173832
SH		 4887static void sky2_shutdown(struct pci_dev *pdev)
4888{
4889 struct sky2_hw *hw = pci_get_drvdata(pdev);
4890 int i, wol = 0;
4891
549a68c3
SH		 4892 if (!hw)
4893 return;
4894
19720737 4895 rtnl_lock();
5c0d6b34 4896 del_timer_sync(&hw->watchdog_timer);
e3173832
SH		 4897
4898 for (i = 0; i < hw->ports; i++) {
4899 struct net_device *dev = hw->dev[i];
4900 struct sky2_port *sky2 = netdev_priv(dev);
4901
4902 if (sky2->wol) {
4903 wol = 1;
4904 sky2_wol_init(sky2);
4905 }
4906 }
4907
4908 if (wol)
4909 sky2_power_aux(hw);
19720737 4910 rtnl_unlock();
e3173832
SH		 4911
4912 pci_enable_wake(pdev, PCI_D3hot, wol);
4913 pci_enable_wake(pdev, PCI_D3cold, wol);
4914
4915 pci_disable_device(pdev);
f71eb1a2 4916 pci_set_power_state(pdev, PCI_D3hot);
e3173832
SH		 4917}
4918
cd28ab6a 4919static struct pci_driver sky2_driver = {
793b883e
SH		 4920 .name = DRV_NAME,
4921 .id_table = sky2_id_table,
4922 .probe = sky2_probe,
4923 .remove = __devexit_p(sky2_remove),
cd28ab6a 4924#ifdef CONFIG_PM
793b883e
SH		 4925 .suspend = sky2_suspend,
4926 .resume = sky2_resume,
cd28ab6a 4927#endif
e3173832 4928 .shutdown = sky2_shutdown,
cd28ab6a
SH		 4929};
4930
4931static int __init sky2_init_module(void)
4932{
c844d483
SH		 4933 pr_info(PFX "driver version " DRV_VERSION "\n");
4934
3cf26753 4935 sky2_debug_init();
50241c4c 4936 return pci_register_driver(&sky2_driver);
cd28ab6a
SH		 4937}
4938
4939static void __exit sky2_cleanup_module(void)
4940{
4941 pci_unregister_driver(&sky2_driver);
3cf26753 4942 sky2_debug_cleanup();
cd28ab6a
SH		 4943}
4944
4945module_init(sky2_init_module);
4946module_exit(sky2_cleanup_module);
4947
4948MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
65ebe634 4949MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
cd28ab6a 4950MODULE_LICENSE("GPL");
5f4f9dc1 4951MODULE_VERSION(DRV_VERSION);
Linux 6.x block layer and io_uring tree(s)