2 * New driver for Marvell Yukon 2 chipset.
3 * Based on earlier sk98lin, and skge driver.
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.
9 * Copyright (C) 2005 Stephen Hemminger <shemminger@osdl.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
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.
25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
27 #include <linux/crc32.h>
28 #include <linux/kernel.h>
29 #include <linux/module.h>
30 #include <linux/netdevice.h>
31 #include <linux/dma-mapping.h>
32 #include <linux/etherdevice.h>
33 #include <linux/ethtool.h>
34 #include <linux/pci.h>
37 #include <linux/tcp.h>
39 #include <linux/delay.h>
40 #include <linux/workqueue.h>
41 #include <linux/if_vlan.h>
42 #include <linux/prefetch.h>
43 #include <linux/debugfs.h>
44 #include <linux/mii.h>
48 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
49 #define SKY2_VLAN_TAG_USED 1
54 #define DRV_NAME "sky2"
55 #define DRV_VERSION "1.27"
58 * The Yukon II chipset takes 64 bit command blocks (called list elements)
59 * that are organized into three (receive, transmit, status) different rings
63 #define RX_LE_SIZE 1024
64 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
65 #define RX_MAX_PENDING (RX_LE_SIZE/6 - 2)
66 #define RX_DEF_PENDING RX_MAX_PENDING
68 /* This is the worst case number of transmit list elements for a single skb:
69 VLAN:GSO + CKSUM + Data + skb_frags * DMA */
70 #define MAX_SKB_TX_LE (2 + (sizeof(dma_addr_t)/sizeof(u32))*(MAX_SKB_FRAGS+1))
71 #define TX_MIN_PENDING (MAX_SKB_TX_LE+1)
72 #define TX_MAX_PENDING 4096
73 #define TX_DEF_PENDING 127
75 #define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
76 #define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
77 #define TX_WATCHDOG (5 * HZ)
78 #define NAPI_WEIGHT 64
79 #define PHY_RETRIES 1000
81 #define SKY2_EEPROM_MAGIC 0x9955aabb
84 #define RING_NEXT(x,s) (((x)+1) & ((s)-1))
86 static const u32 default_msg =
87 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
88 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
89 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
91 static int debug = -1; /* defaults above */
92 module_param(debug, int, 0);
93 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
95 static int copybreak __read_mostly = 128;
96 module_param(copybreak, int, 0);
97 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
99 static int disable_msi = 0;
100 module_param(disable_msi, int, 0);
101 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
103 static DEFINE_PCI_DEVICE_TABLE(sky2_id_table) = {
104 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
105 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
106 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E01) }, /* SK-9E21M */
107 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
108 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
109 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
110 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B03) }, /* DGE-550T */
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4354) }, /* 88E8040 */
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4355) }, /* 88E8040T */
125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4356) }, /* 88EC033 */
126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4357) }, /* 88E8042 */
127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x435A) }, /* 88E8048 */
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) }, /* 88E8052 */
129 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) }, /* 88E8050 */
130 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) }, /* 88E8053 */
131 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) }, /* 88E8055 */
132 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) }, /* 88E8056 */
133 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4365) }, /* 88E8070 */
134 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) }, /* 88EC036 */
135 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) }, /* 88EC032 */
136 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) }, /* 88EC034 */
137 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4369) }, /* 88EC042 */
138 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436A) }, /* 88E8058 */
139 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436B) }, /* 88E8071 */
140 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436C) }, /* 88E8072 */
141 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436D) }, /* 88E8055 */
142 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4370) }, /* 88E8075 */
143 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4380) }, /* 88E8057 */
144 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4381) }, /* 88E8059 */
148 MODULE_DEVICE_TABLE(pci, sky2_id_table);
150 /* Avoid conditionals by using array */
151 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
152 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
153 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
155 static void sky2_set_multicast(struct net_device *dev);
157 /* Access to PHY via serial interconnect */
158 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
162 gma_write16(hw, port, GM_SMI_DATA, val);
163 gma_write16(hw, port, GM_SMI_CTRL,
164 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
166 for (i = 0; i < PHY_RETRIES; i++) {
167 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
171 if (!(ctrl & GM_SMI_CT_BUSY))
177 dev_warn(&hw->pdev->dev,"%s: phy write timeout\n", hw->dev[port]->name);
181 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
185 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
189 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
190 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
192 for (i = 0; i < PHY_RETRIES; i++) {
193 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
197 if (ctrl & GM_SMI_CT_RD_VAL) {
198 *val = gma_read16(hw, port, GM_SMI_DATA);
205 dev_warn(&hw->pdev->dev, "%s: phy read timeout\n", hw->dev[port]->name);
208 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
212 static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
215 __gm_phy_read(hw, port, reg, &v);
220 static void sky2_power_on(struct sky2_hw *hw)
222 /* switch power to VCC (WA for VAUX problem) */
223 sky2_write8(hw, B0_POWER_CTRL,
224 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
226 /* disable Core Clock Division, */
227 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
229 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
230 /* enable bits are inverted */
231 sky2_write8(hw, B2_Y2_CLK_GATE,
232 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
233 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
234 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
236 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
238 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
241 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
243 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
244 /* set all bits to 0 except bits 15..12 and 8 */
245 reg &= P_ASPM_CONTROL_MSK;
246 sky2_pci_write32(hw, PCI_DEV_REG4, reg);
248 reg = sky2_pci_read32(hw, PCI_DEV_REG5);
249 /* set all bits to 0 except bits 28 & 27 */
250 reg &= P_CTL_TIM_VMAIN_AV_MSK;
251 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
253 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
255 sky2_write16(hw, B0_CTST, Y2_HW_WOL_ON);
257 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
258 reg = sky2_read32(hw, B2_GP_IO);
259 reg |= GLB_GPIO_STAT_RACE_DIS;
260 sky2_write32(hw, B2_GP_IO, reg);
262 sky2_read32(hw, B2_GP_IO);
265 /* Turn on "driver loaded" LED */
266 sky2_write16(hw, B0_CTST, Y2_LED_STAT_ON);
269 static void sky2_power_aux(struct sky2_hw *hw)
271 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
272 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
274 /* enable bits are inverted */
275 sky2_write8(hw, B2_Y2_CLK_GATE,
276 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
277 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
278 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
280 /* switch power to VAUX if supported and PME from D3cold */
281 if ( (sky2_read32(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
282 pci_pme_capable(hw->pdev, PCI_D3cold))
283 sky2_write8(hw, B0_POWER_CTRL,
284 (PC_VAUX_ENA | PC_VCC_ENA |
285 PC_VAUX_ON | PC_VCC_OFF));
287 /* turn off "driver loaded LED" */
288 sky2_write16(hw, B0_CTST, Y2_LED_STAT_OFF);
291 static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
295 /* disable all GMAC IRQ's */
296 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
298 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
299 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
300 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
301 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
303 reg = gma_read16(hw, port, GM_RX_CTRL);
304 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
305 gma_write16(hw, port, GM_RX_CTRL, reg);
308 /* flow control to advertise bits */
309 static const u16 copper_fc_adv[] = {
311 [FC_TX] = PHY_M_AN_ASP,
312 [FC_RX] = PHY_M_AN_PC,
313 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
316 /* flow control to advertise bits when using 1000BaseX */
317 static const u16 fiber_fc_adv[] = {
318 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
319 [FC_TX] = PHY_M_P_ASYM_MD_X,
320 [FC_RX] = PHY_M_P_SYM_MD_X,
321 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
324 /* flow control to GMA disable bits */
325 static const u16 gm_fc_disable[] = {
326 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
327 [FC_TX] = GM_GPCR_FC_RX_DIS,
328 [FC_RX] = GM_GPCR_FC_TX_DIS,
333 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
335 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
336 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
338 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
339 !(hw->flags & SKY2_HW_NEWER_PHY)) {
340 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
342 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
344 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
346 /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
347 if (hw->chip_id == CHIP_ID_YUKON_EC)
348 /* set downshift counter to 3x and enable downshift */
349 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
351 /* set master & slave downshift counter to 1x */
352 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
354 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
357 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
358 if (sky2_is_copper(hw)) {
359 if (!(hw->flags & SKY2_HW_GIGABIT)) {
360 /* enable automatic crossover */
361 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
363 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
364 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
367 /* Enable Class A driver for FE+ A0 */
368 spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2);
369 spec |= PHY_M_FESC_SEL_CL_A;
370 gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec);
373 /* disable energy detect */
374 ctrl &= ~PHY_M_PC_EN_DET_MSK;
376 /* enable automatic crossover */
377 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
379 /* downshift on PHY 88E1112 and 88E1149 is changed */
380 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
381 (hw->flags & SKY2_HW_NEWER_PHY)) {
382 /* set downshift counter to 3x and enable downshift */
383 ctrl &= ~PHY_M_PC_DSC_MSK;
384 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
388 /* workaround for deviation #4.88 (CRC errors) */
389 /* disable Automatic Crossover */
391 ctrl &= ~PHY_M_PC_MDIX_MSK;
394 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
396 /* special setup for PHY 88E1112 Fiber */
397 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
398 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
400 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
401 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
402 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
403 ctrl &= ~PHY_M_MAC_MD_MSK;
404 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
405 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
407 if (hw->pmd_type == 'P') {
408 /* select page 1 to access Fiber registers */
409 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
411 /* for SFP-module set SIGDET polarity to low */
412 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
413 ctrl |= PHY_M_FIB_SIGD_POL;
414 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
417 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
425 if (sky2->flags & SKY2_FLAG_AUTO_SPEED) {
426 if (sky2_is_copper(hw)) {
427 if (sky2->advertising & ADVERTISED_1000baseT_Full)
428 ct1000 |= PHY_M_1000C_AFD;
429 if (sky2->advertising & ADVERTISED_1000baseT_Half)
430 ct1000 |= PHY_M_1000C_AHD;
431 if (sky2->advertising & ADVERTISED_100baseT_Full)
432 adv |= PHY_M_AN_100_FD;
433 if (sky2->advertising & ADVERTISED_100baseT_Half)
434 adv |= PHY_M_AN_100_HD;
435 if (sky2->advertising & ADVERTISED_10baseT_Full)
436 adv |= PHY_M_AN_10_FD;
437 if (sky2->advertising & ADVERTISED_10baseT_Half)
438 adv |= PHY_M_AN_10_HD;
440 } else { /* special defines for FIBER (88E1040S only) */
441 if (sky2->advertising & ADVERTISED_1000baseT_Full)
442 adv |= PHY_M_AN_1000X_AFD;
443 if (sky2->advertising & ADVERTISED_1000baseT_Half)
444 adv |= PHY_M_AN_1000X_AHD;
447 /* Restart Auto-negotiation */
448 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
450 /* forced speed/duplex settings */
451 ct1000 = PHY_M_1000C_MSE;
453 /* Disable auto update for duplex flow control and duplex */
454 reg |= GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_SPD_DIS;
456 switch (sky2->speed) {
458 ctrl |= PHY_CT_SP1000;
459 reg |= GM_GPCR_SPEED_1000;
462 ctrl |= PHY_CT_SP100;
463 reg |= GM_GPCR_SPEED_100;
467 if (sky2->duplex == DUPLEX_FULL) {
468 reg |= GM_GPCR_DUP_FULL;
469 ctrl |= PHY_CT_DUP_MD;
470 } else if (sky2->speed < SPEED_1000)
471 sky2->flow_mode = FC_NONE;
474 if (sky2->flags & SKY2_FLAG_AUTO_PAUSE) {
475 if (sky2_is_copper(hw))
476 adv |= copper_fc_adv[sky2->flow_mode];
478 adv |= fiber_fc_adv[sky2->flow_mode];
480 reg |= GM_GPCR_AU_FCT_DIS;
481 reg |= gm_fc_disable[sky2->flow_mode];
483 /* Forward pause packets to GMAC? */
484 if (sky2->flow_mode & FC_RX)
485 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
487 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
490 gma_write16(hw, port, GM_GP_CTRL, reg);
492 if (hw->flags & SKY2_HW_GIGABIT)
493 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
495 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
496 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
498 /* Setup Phy LED's */
499 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
502 switch (hw->chip_id) {
503 case CHIP_ID_YUKON_FE:
504 /* on 88E3082 these bits are at 11..9 (shifted left) */
505 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
507 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
509 /* delete ACT LED control bits */
510 ctrl &= ~PHY_M_FELP_LED1_MSK;
511 /* change ACT LED control to blink mode */
512 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
513 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
516 case CHIP_ID_YUKON_FE_P:
517 /* Enable Link Partner Next Page */
518 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
519 ctrl |= PHY_M_PC_ENA_LIP_NP;
521 /* disable Energy Detect and enable scrambler */
522 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
523 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
525 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
526 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
527 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
528 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
530 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
533 case CHIP_ID_YUKON_XL:
534 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
536 /* select page 3 to access LED control register */
537 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
539 /* set LED Function Control register */
540 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
541 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
542 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
543 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
544 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
546 /* set Polarity Control register */
547 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
548 (PHY_M_POLC_LS1_P_MIX(4) |
549 PHY_M_POLC_IS0_P_MIX(4) |
550 PHY_M_POLC_LOS_CTRL(2) |
551 PHY_M_POLC_INIT_CTRL(2) |
552 PHY_M_POLC_STA1_CTRL(2) |
553 PHY_M_POLC_STA0_CTRL(2)));
555 /* restore page register */
556 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
559 case CHIP_ID_YUKON_EC_U:
560 case CHIP_ID_YUKON_EX:
561 case CHIP_ID_YUKON_SUPR:
562 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
564 /* select page 3 to access LED control register */
565 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
567 /* set LED Function Control register */
568 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
569 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
570 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
571 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
572 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
574 /* set Blink Rate in LED Timer Control Register */
575 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
576 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
577 /* restore page register */
578 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
582 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
583 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
585 /* turn off the Rx LED (LED_RX) */
586 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
589 if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_UL_2) {
590 /* apply fixes in PHY AFE */
591 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
593 /* increase differential signal amplitude in 10BASE-T */
594 gm_phy_write(hw, port, 0x18, 0xaa99);
595 gm_phy_write(hw, port, 0x17, 0x2011);
597 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
598 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
599 gm_phy_write(hw, port, 0x18, 0xa204);
600 gm_phy_write(hw, port, 0x17, 0x2002);
603 /* set page register to 0 */
604 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
605 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
606 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
607 /* apply workaround for integrated resistors calibration */
608 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
609 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
610 } else if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
611 /* apply fixes in PHY AFE */
612 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00ff);
614 /* apply RDAC termination workaround */
615 gm_phy_write(hw, port, 24, 0x2800);
616 gm_phy_write(hw, port, 23, 0x2001);
618 /* set page register back to 0 */
619 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
620 } else if (hw->chip_id != CHIP_ID_YUKON_EX &&
621 hw->chip_id < CHIP_ID_YUKON_SUPR) {
622 /* no effect on Yukon-XL */
623 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
625 if (!(sky2->flags & SKY2_FLAG_AUTO_SPEED) ||
626 sky2->speed == SPEED_100) {
627 /* turn on 100 Mbps LED (LED_LINK100) */
628 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
632 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
636 /* Enable phy interrupt on auto-negotiation complete (or link up) */
637 if (sky2->flags & SKY2_FLAG_AUTO_SPEED)
638 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
640 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
643 static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
644 static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
646 static void sky2_phy_power_up(struct sky2_hw *hw, unsigned port)
650 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
651 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
652 reg1 &= ~phy_power[port];
654 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
655 reg1 |= coma_mode[port];
657 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
658 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
659 sky2_pci_read32(hw, PCI_DEV_REG1);
661 if (hw->chip_id == CHIP_ID_YUKON_FE)
662 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_ANE);
663 else if (hw->flags & SKY2_HW_ADV_POWER_CTL)
664 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
667 static void sky2_phy_power_down(struct sky2_hw *hw, unsigned port)
672 /* release GPHY Control reset */
673 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
675 /* release GMAC reset */
676 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
678 if (hw->flags & SKY2_HW_NEWER_PHY) {
679 /* select page 2 to access MAC control register */
680 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
682 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
683 /* allow GMII Power Down */
684 ctrl &= ~PHY_M_MAC_GMIF_PUP;
685 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
687 /* set page register back to 0 */
688 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
691 /* setup General Purpose Control Register */
692 gma_write16(hw, port, GM_GP_CTRL,
693 GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 |
694 GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_FCT_DIS |
697 if (hw->chip_id != CHIP_ID_YUKON_EC) {
698 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
699 /* select page 2 to access MAC control register */
700 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
702 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
703 /* enable Power Down */
704 ctrl |= PHY_M_PC_POW_D_ENA;
705 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
707 /* set page register back to 0 */
708 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
711 /* set IEEE compatible Power Down Mode (dev. #4.99) */
712 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_PDOWN);
715 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
716 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
717 reg1 |= phy_power[port]; /* set PHY to PowerDown/COMA Mode */
718 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
719 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
722 /* Force a renegotiation */
723 static void sky2_phy_reinit(struct sky2_port *sky2)
725 spin_lock_bh(&sky2->phy_lock);
726 sky2_phy_init(sky2->hw, sky2->port);
727 spin_unlock_bh(&sky2->phy_lock);
730 /* Put device in state to listen for Wake On Lan */
731 static void sky2_wol_init(struct sky2_port *sky2)
733 struct sky2_hw *hw = sky2->hw;
734 unsigned port = sky2->port;
735 enum flow_control save_mode;
738 /* Bring hardware out of reset */
739 sky2_write16(hw, B0_CTST, CS_RST_CLR);
740 sky2_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
742 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
743 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
746 * sky2_reset will re-enable on resume
748 save_mode = sky2->flow_mode;
749 ctrl = sky2->advertising;
751 sky2->advertising &= ~(ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full);
752 sky2->flow_mode = FC_NONE;
754 spin_lock_bh(&sky2->phy_lock);
755 sky2_phy_power_up(hw, port);
756 sky2_phy_init(hw, port);
757 spin_unlock_bh(&sky2->phy_lock);
759 sky2->flow_mode = save_mode;
760 sky2->advertising = ctrl;
762 /* Set GMAC to no flow control and auto update for speed/duplex */
763 gma_write16(hw, port, GM_GP_CTRL,
764 GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
765 GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
767 /* Set WOL address */
768 memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
769 sky2->netdev->dev_addr, ETH_ALEN);
771 /* Turn on appropriate WOL control bits */
772 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
774 if (sky2->wol & WAKE_PHY)
775 ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
777 ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
779 if (sky2->wol & WAKE_MAGIC)
780 ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
782 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;
784 ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
785 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
787 /* Disable PiG firmware */
788 sky2_write16(hw, B0_CTST, Y2_HW_WOL_OFF);
791 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
794 static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
796 struct net_device *dev = hw->dev[port];
798 if ( (hw->chip_id == CHIP_ID_YUKON_EX &&
799 hw->chip_rev != CHIP_REV_YU_EX_A0) ||
800 hw->chip_id >= CHIP_ID_YUKON_FE_P) {
801 /* Yukon-Extreme B0 and further Extreme devices */
802 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
803 } else if (dev->mtu > ETH_DATA_LEN) {
804 /* set Tx GMAC FIFO Almost Empty Threshold */
805 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
806 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
808 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
810 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
813 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
815 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
819 const u8 *addr = hw->dev[port]->dev_addr;
821 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
822 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
824 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
826 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
827 /* WA DEV_472 -- looks like crossed wires on port 2 */
828 /* clear GMAC 1 Control reset */
829 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
831 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
832 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
833 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
834 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
835 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
838 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
840 /* Enable Transmit FIFO Underrun */
841 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
843 spin_lock_bh(&sky2->phy_lock);
844 sky2_phy_power_up(hw, port);
845 sky2_phy_init(hw, port);
846 spin_unlock_bh(&sky2->phy_lock);
849 reg = gma_read16(hw, port, GM_PHY_ADDR);
850 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
852 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
853 gma_read16(hw, port, i);
854 gma_write16(hw, port, GM_PHY_ADDR, reg);
856 /* transmit control */
857 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
859 /* receive control reg: unicast + multicast + no FCS */
860 gma_write16(hw, port, GM_RX_CTRL,
861 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
863 /* transmit flow control */
864 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
866 /* transmit parameter */
867 gma_write16(hw, port, GM_TX_PARAM,
868 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
869 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
870 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
871 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
873 /* serial mode register */
874 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
875 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
877 if (hw->dev[port]->mtu > ETH_DATA_LEN)
878 reg |= GM_SMOD_JUMBO_ENA;
880 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
881 hw->chip_rev == CHIP_REV_YU_EC_U_B1)
882 reg |= GM_NEW_FLOW_CTRL;
884 gma_write16(hw, port, GM_SERIAL_MODE, reg);
886 /* virtual address for data */
887 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
889 /* physical address: used for pause frames */
890 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
892 /* ignore counter overflows */
893 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
894 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
895 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
897 /* Configure Rx MAC FIFO */
898 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
899 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
900 if (hw->chip_id == CHIP_ID_YUKON_EX ||
901 hw->chip_id == CHIP_ID_YUKON_FE_P)
902 rx_reg |= GMF_RX_OVER_ON;
904 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
906 if (hw->chip_id == CHIP_ID_YUKON_XL) {
907 /* Hardware errata - clear flush mask */
908 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0);
910 /* Flush Rx MAC FIFO on any flow control or error */
911 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
914 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
915 reg = RX_GMF_FL_THR_DEF + 1;
916 /* Another magic mystery workaround from sk98lin */
917 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
918 hw->chip_rev == CHIP_REV_YU_FE2_A0)
920 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
922 /* Configure Tx MAC FIFO */
923 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
924 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
926 /* On chips without ram buffer, pause is controled by MAC level */
927 if (!(hw->flags & SKY2_HW_RAM_BUFFER)) {
928 /* Pause threshold is scaled by 8 in bytes */
929 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
930 hw->chip_rev == CHIP_REV_YU_FE2_A0)
934 sky2_write16(hw, SK_REG(port, RX_GMF_UP_THR), reg);
935 sky2_write16(hw, SK_REG(port, RX_GMF_LP_THR), 768 / 8);
937 sky2_set_tx_stfwd(hw, port);
940 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
941 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
942 /* disable dynamic watermark */
943 reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA));
944 reg &= ~TX_DYN_WM_ENA;
945 sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg);
949 /* Assign Ram Buffer allocation to queue */
950 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
954 /* convert from K bytes to qwords used for hw register */
957 end = start + space - 1;
959 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
960 sky2_write32(hw, RB_ADDR(q, RB_START), start);
961 sky2_write32(hw, RB_ADDR(q, RB_END), end);
962 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
963 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
965 if (q == Q_R1 || q == Q_R2) {
966 u32 tp = space - space/4;
968 /* On receive queue's set the thresholds
969 * give receiver priority when > 3/4 full
970 * send pause when down to 2K
972 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
973 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
976 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
977 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
979 /* Enable store & forward on Tx queue's because
980 * Tx FIFO is only 1K on Yukon
982 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
985 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
986 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
989 /* Setup Bus Memory Interface */
990 static void sky2_qset(struct sky2_hw *hw, u16 q)
992 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
993 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
994 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
995 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
998 /* Setup prefetch unit registers. This is the interface between
999 * hardware and driver list elements
1001 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
1002 dma_addr_t addr, u32 last)
1004 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1005 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
1006 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), upper_32_bits(addr));
1007 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), lower_32_bits(addr));
1008 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
1009 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
1011 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
1014 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2, u16 *slot)
1016 struct sky2_tx_le *le = sky2->tx_le + *slot;
1018 *slot = RING_NEXT(*slot, sky2->tx_ring_size);
1023 static void tx_init(struct sky2_port *sky2)
1025 struct sky2_tx_le *le;
1027 sky2->tx_prod = sky2->tx_cons = 0;
1028 sky2->tx_tcpsum = 0;
1029 sky2->tx_last_mss = 0;
1031 le = get_tx_le(sky2, &sky2->tx_prod);
1033 le->opcode = OP_ADDR64 | HW_OWNER;
1034 sky2->tx_last_upper = 0;
1037 /* Update chip's next pointer */
1038 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
1040 /* Make sure write' to descriptors are complete before we tell hardware */
1042 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
1044 /* Synchronize I/O on since next processor may write to tail */
1049 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
1051 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
1052 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
1057 static unsigned sky2_get_rx_threshold(struct sky2_port* sky2)
1061 /* Space needed for frame data + headers rounded up */
1062 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1064 /* Stopping point for hardware truncation */
1065 return (size - 8) / sizeof(u32);
1068 static unsigned sky2_get_rx_data_size(struct sky2_port* sky2)
1070 struct rx_ring_info *re;
1073 /* Space needed for frame data + headers rounded up */
1074 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1076 sky2->rx_nfrags = size >> PAGE_SHIFT;
1077 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1079 /* Compute residue after pages */
1080 size -= sky2->rx_nfrags << PAGE_SHIFT;
1082 /* Optimize to handle small packets and headers */
1083 if (size < copybreak)
1085 if (size < ETH_HLEN)
1091 /* Build description to hardware for one receive segment */
1092 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
1093 dma_addr_t map, unsigned len)
1095 struct sky2_rx_le *le;
1097 if (sizeof(dma_addr_t) > sizeof(u32)) {
1098 le = sky2_next_rx(sky2);
1099 le->addr = cpu_to_le32(upper_32_bits(map));
1100 le->opcode = OP_ADDR64 | HW_OWNER;
1103 le = sky2_next_rx(sky2);
1104 le->addr = cpu_to_le32(lower_32_bits(map));
1105 le->length = cpu_to_le16(len);
1106 le->opcode = op | HW_OWNER;
1109 /* Build description to hardware for one possibly fragmented skb */
1110 static void sky2_rx_submit(struct sky2_port *sky2,
1111 const struct rx_ring_info *re)
1115 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
1117 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
1118 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
1122 static int sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
1125 struct sk_buff *skb = re->skb;
1128 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
1129 if (pci_dma_mapping_error(pdev, re->data_addr))
1132 pci_unmap_len_set(re, data_size, size);
1134 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1135 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1137 re->frag_addr[i] = pci_map_page(pdev, frag->page,
1140 PCI_DMA_FROMDEVICE);
1142 if (pci_dma_mapping_error(pdev, re->frag_addr[i]))
1143 goto map_page_error;
1149 pci_unmap_page(pdev, re->frag_addr[i],
1150 skb_shinfo(skb)->frags[i].size,
1151 PCI_DMA_FROMDEVICE);
1154 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
1155 PCI_DMA_FROMDEVICE);
1158 if (net_ratelimit())
1159 dev_warn(&pdev->dev, "%s: rx mapping error\n",
1164 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1166 struct sk_buff *skb = re->skb;
1169 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
1170 PCI_DMA_FROMDEVICE);
1172 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1173 pci_unmap_page(pdev, re->frag_addr[i],
1174 skb_shinfo(skb)->frags[i].size,
1175 PCI_DMA_FROMDEVICE);
1178 /* Tell chip where to start receive checksum.
1179 * Actually has two checksums, but set both same to avoid possible byte
1182 static void rx_set_checksum(struct sky2_port *sky2)
1184 struct sky2_rx_le *le = sky2_next_rx(sky2);
1186 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1188 le->opcode = OP_TCPSTART | HW_OWNER;
1190 sky2_write32(sky2->hw,
1191 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1192 (sky2->flags & SKY2_FLAG_RX_CHECKSUM)
1193 ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
1197 * The RX Stop command will not work for Yukon-2 if the BMU does not
1198 * reach the end of packet and since we can't make sure that we have
1199 * incoming data, we must reset the BMU while it is not doing a DMA
1200 * transfer. Since it is possible that the RX path is still active,
1201 * the RX RAM buffer will be stopped first, so any possible incoming
1202 * data will not trigger a DMA. After the RAM buffer is stopped, the
1203 * BMU is polled until any DMA in progress is ended and only then it
1206 static void sky2_rx_stop(struct sky2_port *sky2)
1208 struct sky2_hw *hw = sky2->hw;
1209 unsigned rxq = rxqaddr[sky2->port];
1212 /* disable the RAM Buffer receive queue */
1213 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1215 for (i = 0; i < 0xffff; i++)
1216 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1217 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1220 netdev_warn(sky2->netdev, "receiver stop failed\n");
1222 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1224 /* reset the Rx prefetch unit */
1225 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1229 /* Clean out receive buffer area, assumes receiver hardware stopped */
1230 static void sky2_rx_clean(struct sky2_port *sky2)
1234 memset(sky2->rx_le, 0, RX_LE_BYTES);
1235 for (i = 0; i < sky2->rx_pending; i++) {
1236 struct rx_ring_info *re = sky2->rx_ring + i;
1239 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1246 /* Basic MII support */
1247 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1249 struct mii_ioctl_data *data = if_mii(ifr);
1250 struct sky2_port *sky2 = netdev_priv(dev);
1251 struct sky2_hw *hw = sky2->hw;
1252 int err = -EOPNOTSUPP;
1254 if (!netif_running(dev))
1255 return -ENODEV; /* Phy still in reset */
1259 data->phy_id = PHY_ADDR_MARV;
1265 spin_lock_bh(&sky2->phy_lock);
1266 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1267 spin_unlock_bh(&sky2->phy_lock);
1269 data->val_out = val;
1274 spin_lock_bh(&sky2->phy_lock);
1275 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1277 spin_unlock_bh(&sky2->phy_lock);
1283 #ifdef SKY2_VLAN_TAG_USED
1284 static void sky2_set_vlan_mode(struct sky2_hw *hw, u16 port, bool onoff)
1287 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1289 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1292 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1294 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1299 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
1301 struct sky2_port *sky2 = netdev_priv(dev);
1302 struct sky2_hw *hw = sky2->hw;
1303 u16 port = sky2->port;
1305 netif_tx_lock_bh(dev);
1306 napi_disable(&hw->napi);
1309 sky2_set_vlan_mode(hw, port, grp != NULL);
1311 sky2_read32(hw, B0_Y2_SP_LISR);
1312 napi_enable(&hw->napi);
1313 netif_tx_unlock_bh(dev);
1317 /* Amount of required worst case padding in rx buffer */
1318 static inline unsigned sky2_rx_pad(const struct sky2_hw *hw)
1320 return (hw->flags & SKY2_HW_RAM_BUFFER) ? 8 : 2;
1324 * Allocate an skb for receiving. If the MTU is large enough
1325 * make the skb non-linear with a fragment list of pages.
1327 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2)
1329 struct sk_buff *skb;
1332 skb = netdev_alloc_skb(sky2->netdev,
1333 sky2->rx_data_size + sky2_rx_pad(sky2->hw));
1337 if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) {
1338 unsigned char *start;
1340 * Workaround for a bug in FIFO that cause hang
1341 * if the FIFO if the receive buffer is not 64 byte aligned.
1342 * The buffer returned from netdev_alloc_skb is
1343 * aligned except if slab debugging is enabled.
1345 start = PTR_ALIGN(skb->data, 8);
1346 skb_reserve(skb, start - skb->data);
1348 skb_reserve(skb, NET_IP_ALIGN);
1350 for (i = 0; i < sky2->rx_nfrags; i++) {
1351 struct page *page = alloc_page(GFP_ATOMIC);
1355 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1365 static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1367 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1370 static int sky2_alloc_rx_skbs(struct sky2_port *sky2)
1372 struct sky2_hw *hw = sky2->hw;
1375 sky2->rx_data_size = sky2_get_rx_data_size(sky2);
1378 for (i = 0; i < sky2->rx_pending; i++) {
1379 struct rx_ring_info *re = sky2->rx_ring + i;
1381 re->skb = sky2_rx_alloc(sky2);
1385 if (sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size)) {
1386 dev_kfree_skb(re->skb);
1395 * Setup receiver buffer pool.
1396 * Normal case this ends up creating one list element for skb
1397 * in the receive ring. Worst case if using large MTU and each
1398 * allocation falls on a different 64 bit region, that results
1399 * in 6 list elements per ring entry.
1400 * One element is used for checksum enable/disable, and one
1401 * extra to avoid wrap.
1403 static void sky2_rx_start(struct sky2_port *sky2)
1405 struct sky2_hw *hw = sky2->hw;
1406 struct rx_ring_info *re;
1407 unsigned rxq = rxqaddr[sky2->port];
1410 sky2->rx_put = sky2->rx_next = 0;
1413 /* On PCI express lowering the watermark gives better performance */
1414 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
1415 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1417 /* These chips have no ram buffer?
1418 * MAC Rx RAM Read is controlled by hardware */
1419 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1420 hw->chip_rev > CHIP_REV_YU_EC_U_A0)
1421 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1423 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1425 if (!(hw->flags & SKY2_HW_NEW_LE))
1426 rx_set_checksum(sky2);
1428 /* submit Rx ring */
1429 for (i = 0; i < sky2->rx_pending; i++) {
1430 re = sky2->rx_ring + i;
1431 sky2_rx_submit(sky2, re);
1435 * The receiver hangs if it receives frames larger than the
1436 * packet buffer. As a workaround, truncate oversize frames, but
1437 * the register is limited to 9 bits, so if you do frames > 2052
1438 * you better get the MTU right!
1440 thresh = sky2_get_rx_threshold(sky2);
1442 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1444 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1445 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1448 /* Tell chip about available buffers */
1449 sky2_rx_update(sky2, rxq);
1451 if (hw->chip_id == CHIP_ID_YUKON_EX ||
1452 hw->chip_id == CHIP_ID_YUKON_SUPR) {
1454 * Disable flushing of non ASF packets;
1455 * must be done after initializing the BMUs;
1456 * drivers without ASF support should do this too, otherwise
1457 * it may happen that they cannot run on ASF devices;
1458 * remember that the MAC FIFO isn't reset during initialization.
1460 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_MACSEC_FLUSH_OFF);
1463 if (hw->chip_id >= CHIP_ID_YUKON_SUPR) {
1464 /* Enable RX Home Address & Routing Header checksum fix */
1465 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_FL_CTRL),
1466 RX_IPV6_SA_MOB_ENA | RX_IPV6_DA_MOB_ENA);
1468 /* Enable TX Home Address & Routing Header checksum fix */
1469 sky2_write32(hw, Q_ADDR(txqaddr[sky2->port], Q_TEST),
1470 TBMU_TEST_HOME_ADD_FIX_EN | TBMU_TEST_ROUTING_ADD_FIX_EN);
1474 static int sky2_alloc_buffers(struct sky2_port *sky2)
1476 struct sky2_hw *hw = sky2->hw;
1478 /* must be power of 2 */
1479 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1480 sky2->tx_ring_size *
1481 sizeof(struct sky2_tx_le),
1486 sky2->tx_ring = kcalloc(sky2->tx_ring_size, sizeof(struct tx_ring_info),
1491 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1495 memset(sky2->rx_le, 0, RX_LE_BYTES);
1497 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1502 return sky2_alloc_rx_skbs(sky2);
1507 static void sky2_free_buffers(struct sky2_port *sky2)
1509 struct sky2_hw *hw = sky2->hw;
1511 sky2_rx_clean(sky2);
1514 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1515 sky2->rx_le, sky2->rx_le_map);
1519 pci_free_consistent(hw->pdev,
1520 sky2->tx_ring_size * sizeof(struct sky2_tx_le),
1521 sky2->tx_le, sky2->tx_le_map);
1524 kfree(sky2->tx_ring);
1525 kfree(sky2->rx_ring);
1527 sky2->tx_ring = NULL;
1528 sky2->rx_ring = NULL;
1531 static void sky2_hw_up(struct sky2_port *sky2)
1533 struct sky2_hw *hw = sky2->hw;
1534 unsigned port = sky2->port;
1537 struct net_device *otherdev = hw->dev[sky2->port^1];
1542 * On dual port PCI-X card, there is an problem where status
1543 * can be received out of order due to split transactions
1545 if (otherdev && netif_running(otherdev) &&
1546 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1549 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1550 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1551 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1554 sky2_mac_init(hw, port);
1556 /* Register is number of 4K blocks on internal RAM buffer. */
1557 ramsize = sky2_read8(hw, B2_E_0) * 4;
1561 netdev_dbg(sky2->netdev, "ram buffer %dK\n", ramsize);
1563 rxspace = ramsize / 2;
1565 rxspace = 8 + (2*(ramsize - 16))/3;
1567 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1568 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1570 /* Make sure SyncQ is disabled */
1571 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1575 sky2_qset(hw, txqaddr[port]);
1577 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1578 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1579 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1581 /* Set almost empty threshold */
1582 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1583 hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1584 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1586 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1587 sky2->tx_ring_size - 1);
1589 #ifdef SKY2_VLAN_TAG_USED
1590 sky2_set_vlan_mode(hw, port, sky2->vlgrp != NULL);
1593 sky2_rx_start(sky2);
1596 /* Bring up network interface. */
1597 static int sky2_up(struct net_device *dev)
1599 struct sky2_port *sky2 = netdev_priv(dev);
1600 struct sky2_hw *hw = sky2->hw;
1601 unsigned port = sky2->port;
1605 netif_carrier_off(dev);
1607 err = sky2_alloc_buffers(sky2);
1613 /* Enable interrupts from phy/mac for port */
1614 imask = sky2_read32(hw, B0_IMSK);
1615 imask |= portirq_msk[port];
1616 sky2_write32(hw, B0_IMSK, imask);
1617 sky2_read32(hw, B0_IMSK);
1619 netif_info(sky2, ifup, dev, "enabling interface\n");
1624 sky2_free_buffers(sky2);
1628 /* Modular subtraction in ring */
1629 static inline int tx_inuse(const struct sky2_port *sky2)
1631 return (sky2->tx_prod - sky2->tx_cons) & (sky2->tx_ring_size - 1);
1634 /* Number of list elements available for next tx */
1635 static inline int tx_avail(const struct sky2_port *sky2)
1637 return sky2->tx_pending - tx_inuse(sky2);
1640 /* Estimate of number of transmit list elements required */
1641 static unsigned tx_le_req(const struct sk_buff *skb)
1645 count = (skb_shinfo(skb)->nr_frags + 1)
1646 * (sizeof(dma_addr_t) / sizeof(u32));
1648 if (skb_is_gso(skb))
1650 else if (sizeof(dma_addr_t) == sizeof(u32))
1651 ++count; /* possible vlan */
1653 if (skb->ip_summed == CHECKSUM_PARTIAL)
1659 static void sky2_tx_unmap(struct pci_dev *pdev, struct tx_ring_info *re)
1661 if (re->flags & TX_MAP_SINGLE)
1662 pci_unmap_single(pdev, pci_unmap_addr(re, mapaddr),
1663 pci_unmap_len(re, maplen),
1665 else if (re->flags & TX_MAP_PAGE)
1666 pci_unmap_page(pdev, pci_unmap_addr(re, mapaddr),
1667 pci_unmap_len(re, maplen),
1673 * Put one packet in ring for transmit.
1674 * A single packet can generate multiple list elements, and
1675 * the number of ring elements will probably be less than the number
1676 * of list elements used.
1678 static netdev_tx_t sky2_xmit_frame(struct sk_buff *skb,
1679 struct net_device *dev)
1681 struct sky2_port *sky2 = netdev_priv(dev);
1682 struct sky2_hw *hw = sky2->hw;
1683 struct sky2_tx_le *le = NULL;
1684 struct tx_ring_info *re;
1692 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1693 return NETDEV_TX_BUSY;
1695 len = skb_headlen(skb);
1696 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1698 if (pci_dma_mapping_error(hw->pdev, mapping))
1701 slot = sky2->tx_prod;
1702 netif_printk(sky2, tx_queued, KERN_DEBUG, dev,
1703 "tx queued, slot %u, len %d\n", slot, skb->len);
1705 /* Send high bits if needed */
1706 upper = upper_32_bits(mapping);
1707 if (upper != sky2->tx_last_upper) {
1708 le = get_tx_le(sky2, &slot);
1709 le->addr = cpu_to_le32(upper);
1710 sky2->tx_last_upper = upper;
1711 le->opcode = OP_ADDR64 | HW_OWNER;
1714 /* Check for TCP Segmentation Offload */
1715 mss = skb_shinfo(skb)->gso_size;
1718 if (!(hw->flags & SKY2_HW_NEW_LE))
1719 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1721 if (mss != sky2->tx_last_mss) {
1722 le = get_tx_le(sky2, &slot);
1723 le->addr = cpu_to_le32(mss);
1725 if (hw->flags & SKY2_HW_NEW_LE)
1726 le->opcode = OP_MSS | HW_OWNER;
1728 le->opcode = OP_LRGLEN | HW_OWNER;
1729 sky2->tx_last_mss = mss;
1734 #ifdef SKY2_VLAN_TAG_USED
1735 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1736 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1738 le = get_tx_le(sky2, &slot);
1740 le->opcode = OP_VLAN|HW_OWNER;
1742 le->opcode |= OP_VLAN;
1743 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1748 /* Handle TCP checksum offload */
1749 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1750 /* On Yukon EX (some versions) encoding change. */
1751 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1752 ctrl |= CALSUM; /* auto checksum */
1754 const unsigned offset = skb_transport_offset(skb);
1757 tcpsum = offset << 16; /* sum start */
1758 tcpsum |= offset + skb->csum_offset; /* sum write */
1760 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1761 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1764 if (tcpsum != sky2->tx_tcpsum) {
1765 sky2->tx_tcpsum = tcpsum;
1767 le = get_tx_le(sky2, &slot);
1768 le->addr = cpu_to_le32(tcpsum);
1769 le->length = 0; /* initial checksum value */
1770 le->ctrl = 1; /* one packet */
1771 le->opcode = OP_TCPLISW | HW_OWNER;
1776 re = sky2->tx_ring + slot;
1777 re->flags = TX_MAP_SINGLE;
1778 pci_unmap_addr_set(re, mapaddr, mapping);
1779 pci_unmap_len_set(re, maplen, len);
1781 le = get_tx_le(sky2, &slot);
1782 le->addr = cpu_to_le32(lower_32_bits(mapping));
1783 le->length = cpu_to_le16(len);
1785 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1788 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1789 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1791 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1792 frag->size, PCI_DMA_TODEVICE);
1794 if (pci_dma_mapping_error(hw->pdev, mapping))
1795 goto mapping_unwind;
1797 upper = upper_32_bits(mapping);
1798 if (upper != sky2->tx_last_upper) {
1799 le = get_tx_le(sky2, &slot);
1800 le->addr = cpu_to_le32(upper);
1801 sky2->tx_last_upper = upper;
1802 le->opcode = OP_ADDR64 | HW_OWNER;
1805 re = sky2->tx_ring + slot;
1806 re->flags = TX_MAP_PAGE;
1807 pci_unmap_addr_set(re, mapaddr, mapping);
1808 pci_unmap_len_set(re, maplen, frag->size);
1810 le = get_tx_le(sky2, &slot);
1811 le->addr = cpu_to_le32(lower_32_bits(mapping));
1812 le->length = cpu_to_le16(frag->size);
1814 le->opcode = OP_BUFFER | HW_OWNER;
1820 sky2->tx_prod = slot;
1822 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1823 netif_stop_queue(dev);
1825 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1827 return NETDEV_TX_OK;
1830 for (i = sky2->tx_prod; i != slot; i = RING_NEXT(i, sky2->tx_ring_size)) {
1831 re = sky2->tx_ring + i;
1833 sky2_tx_unmap(hw->pdev, re);
1837 if (net_ratelimit())
1838 dev_warn(&hw->pdev->dev, "%s: tx mapping error\n", dev->name);
1840 return NETDEV_TX_OK;
1844 * Free ring elements from starting at tx_cons until "done"
1847 * 1. The hardware will tell us about partial completion of multi-part
1848 * buffers so make sure not to free skb to early.
1849 * 2. This may run in parallel start_xmit because the it only
1850 * looks at the tail of the queue of FIFO (tx_cons), not
1851 * the head (tx_prod)
1853 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1855 struct net_device *dev = sky2->netdev;
1858 BUG_ON(done >= sky2->tx_ring_size);
1860 for (idx = sky2->tx_cons; idx != done;
1861 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
1862 struct tx_ring_info *re = sky2->tx_ring + idx;
1863 struct sk_buff *skb = re->skb;
1865 sky2_tx_unmap(sky2->hw->pdev, re);
1868 netif_printk(sky2, tx_done, KERN_DEBUG, dev,
1869 "tx done %u\n", idx);
1871 dev->stats.tx_packets++;
1872 dev->stats.tx_bytes += skb->len;
1875 dev_kfree_skb_any(skb);
1877 sky2->tx_next = RING_NEXT(idx, sky2->tx_ring_size);
1881 sky2->tx_cons = idx;
1885 static void sky2_tx_reset(struct sky2_hw *hw, unsigned port)
1887 /* Disable Force Sync bit and Enable Alloc bit */
1888 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1889 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1891 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1892 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1893 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1895 /* Reset the PCI FIFO of the async Tx queue */
1896 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1897 BMU_RST_SET | BMU_FIFO_RST);
1899 /* Reset the Tx prefetch units */
1900 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1903 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1904 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1907 static void sky2_hw_down(struct sky2_port *sky2)
1909 struct sky2_hw *hw = sky2->hw;
1910 unsigned port = sky2->port;
1913 /* Force flow control off */
1914 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
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));
1920 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1921 RB_RST_SET | RB_DIS_OP_MD);
1923 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1924 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1925 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1927 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1929 /* Workaround shared GMAC reset */
1930 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 &&
1931 port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1932 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1934 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
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);
1944 spin_lock_bh(&sky2->phy_lock);
1945 sky2_phy_power_down(hw, port);
1946 spin_unlock_bh(&sky2->phy_lock);
1948 sky2_tx_reset(hw, port);
1950 /* Free any pending frames stuck in HW queue */
1951 sky2_tx_complete(sky2, sky2->tx_prod);
1954 /* Network shutdown */
1955 static int sky2_down(struct net_device *dev)
1957 struct sky2_port *sky2 = netdev_priv(dev);
1958 struct sky2_hw *hw = sky2->hw;
1960 /* Never really got started! */
1964 netif_info(sky2, ifdown, dev, "disabling interface\n");
1966 /* Disable port IRQ */
1967 sky2_write32(hw, B0_IMSK,
1968 sky2_read32(hw, B0_IMSK) & ~portirq_msk[sky2->port]);
1969 sky2_read32(hw, B0_IMSK);
1971 synchronize_irq(hw->pdev->irq);
1972 napi_synchronize(&hw->napi);
1976 sky2_free_buffers(sky2);
1981 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1983 if (hw->flags & SKY2_HW_FIBRE_PHY)
1986 if (!(hw->flags & SKY2_HW_GIGABIT)) {
1987 if (aux & PHY_M_PS_SPEED_100)
1993 switch (aux & PHY_M_PS_SPEED_MSK) {
1994 case PHY_M_PS_SPEED_1000:
1996 case PHY_M_PS_SPEED_100:
2003 static void sky2_link_up(struct sky2_port *sky2)
2005 struct sky2_hw *hw = sky2->hw;
2006 unsigned port = sky2->port;
2008 static const char *fc_name[] = {
2016 reg = gma_read16(hw, port, GM_GP_CTRL);
2017 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
2018 gma_write16(hw, port, GM_GP_CTRL, reg);
2020 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
2022 netif_carrier_on(sky2->netdev);
2024 mod_timer(&hw->watchdog_timer, jiffies + 1);
2026 /* Turn on link LED */
2027 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
2028 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
2030 netif_info(sky2, link, sky2->netdev,
2031 "Link is up at %d Mbps, %s duplex, flow control %s\n",
2033 sky2->duplex == DUPLEX_FULL ? "full" : "half",
2034 fc_name[sky2->flow_status]);
2037 static void sky2_link_down(struct sky2_port *sky2)
2039 struct sky2_hw *hw = sky2->hw;
2040 unsigned port = sky2->port;
2043 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
2045 reg = gma_read16(hw, port, GM_GP_CTRL);
2046 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
2047 gma_write16(hw, port, GM_GP_CTRL, reg);
2049 netif_carrier_off(sky2->netdev);
2051 /* Turn off link LED */
2052 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
2054 netif_info(sky2, link, sky2->netdev, "Link is down\n");
2056 sky2_phy_init(hw, port);
2059 static enum flow_control sky2_flow(int rx, int tx)
2062 return tx ? FC_BOTH : FC_RX;
2064 return tx ? FC_TX : FC_NONE;
2067 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
2069 struct sky2_hw *hw = sky2->hw;
2070 unsigned port = sky2->port;
2073 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
2074 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
2075 if (lpa & PHY_M_AN_RF) {
2076 netdev_err(sky2->netdev, "remote fault\n");
2080 if (!(aux & PHY_M_PS_SPDUP_RES)) {
2081 netdev_err(sky2->netdev, "speed/duplex mismatch\n");
2085 sky2->speed = sky2_phy_speed(hw, aux);
2086 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2088 /* Since the pause result bits seem to in different positions on
2089 * different chips. look at registers.
2091 if (hw->flags & SKY2_HW_FIBRE_PHY) {
2092 /* Shift for bits in fiber PHY */
2093 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
2094 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
2096 if (advert & ADVERTISE_1000XPAUSE)
2097 advert |= ADVERTISE_PAUSE_CAP;
2098 if (advert & ADVERTISE_1000XPSE_ASYM)
2099 advert |= ADVERTISE_PAUSE_ASYM;
2100 if (lpa & LPA_1000XPAUSE)
2101 lpa |= LPA_PAUSE_CAP;
2102 if (lpa & LPA_1000XPAUSE_ASYM)
2103 lpa |= LPA_PAUSE_ASYM;
2106 sky2->flow_status = FC_NONE;
2107 if (advert & ADVERTISE_PAUSE_CAP) {
2108 if (lpa & LPA_PAUSE_CAP)
2109 sky2->flow_status = FC_BOTH;
2110 else if (advert & ADVERTISE_PAUSE_ASYM)
2111 sky2->flow_status = FC_RX;
2112 } else if (advert & ADVERTISE_PAUSE_ASYM) {
2113 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
2114 sky2->flow_status = FC_TX;
2117 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000 &&
2118 !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
2119 sky2->flow_status = FC_NONE;
2121 if (sky2->flow_status & FC_TX)
2122 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2124 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2129 /* Interrupt from PHY */
2130 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
2132 struct net_device *dev = hw->dev[port];
2133 struct sky2_port *sky2 = netdev_priv(dev);
2134 u16 istatus, phystat;
2136 if (!netif_running(dev))
2139 spin_lock(&sky2->phy_lock);
2140 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2141 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2143 netif_info(sky2, intr, sky2->netdev, "phy interrupt status 0x%x 0x%x\n",
2146 if (istatus & PHY_M_IS_AN_COMPL) {
2147 if (sky2_autoneg_done(sky2, phystat) == 0)
2152 if (istatus & PHY_M_IS_LSP_CHANGE)
2153 sky2->speed = sky2_phy_speed(hw, phystat);
2155 if (istatus & PHY_M_IS_DUP_CHANGE)
2157 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2159 if (istatus & PHY_M_IS_LST_CHANGE) {
2160 if (phystat & PHY_M_PS_LINK_UP)
2163 sky2_link_down(sky2);
2166 spin_unlock(&sky2->phy_lock);
2169 /* Special quick link interrupt (Yukon-2 Optima only) */
2170 static void sky2_qlink_intr(struct sky2_hw *hw)
2172 struct sky2_port *sky2 = netdev_priv(hw->dev[0]);
2177 imask = sky2_read32(hw, B0_IMSK);
2178 imask &= ~Y2_IS_PHY_QLNK;
2179 sky2_write32(hw, B0_IMSK, imask);
2181 /* reset PHY Link Detect */
2182 phy = sky2_pci_read16(hw, PSM_CONFIG_REG4);
2183 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2184 sky2_pci_write16(hw, PSM_CONFIG_REG4, phy | 1);
2185 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2190 /* Transmit timeout is only called if we are running, carrier is up
2191 * and tx queue is full (stopped).
2193 static void sky2_tx_timeout(struct net_device *dev)
2195 struct sky2_port *sky2 = netdev_priv(dev);
2196 struct sky2_hw *hw = sky2->hw;
2198 netif_err(sky2, timer, dev, "tx timeout\n");
2200 netdev_printk(KERN_DEBUG, dev, "transmit ring %u .. %u report=%u done=%u\n",
2201 sky2->tx_cons, sky2->tx_prod,
2202 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
2203 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
2205 /* can't restart safely under softirq */
2206 schedule_work(&hw->restart_work);
2209 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
2211 struct sky2_port *sky2 = netdev_priv(dev);
2212 struct sky2_hw *hw = sky2->hw;
2213 unsigned port = sky2->port;
2218 /* MTU size outside the spec */
2219 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2222 /* MTU > 1500 on yukon FE and FE+ not allowed */
2223 if (new_mtu > ETH_DATA_LEN &&
2224 (hw->chip_id == CHIP_ID_YUKON_FE ||
2225 hw->chip_id == CHIP_ID_YUKON_FE_P))
2228 /* TSO, etc on Yukon Ultra and MTU > 1500 not supported */
2229 if (new_mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U)
2230 dev->features &= ~(NETIF_F_TSO|NETIF_F_SG|NETIF_F_ALL_CSUM);
2232 if (!netif_running(dev)) {
2237 imask = sky2_read32(hw, B0_IMSK);
2238 sky2_write32(hw, B0_IMSK, 0);
2240 dev->trans_start = jiffies; /* prevent tx timeout */
2241 netif_stop_queue(dev);
2242 napi_disable(&hw->napi);
2244 synchronize_irq(hw->pdev->irq);
2246 if (!(hw->flags & SKY2_HW_RAM_BUFFER))
2247 sky2_set_tx_stfwd(hw, port);
2249 ctl = gma_read16(hw, port, GM_GP_CTRL);
2250 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2252 sky2_rx_clean(sky2);
2256 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
2257 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
2259 if (dev->mtu > ETH_DATA_LEN)
2260 mode |= GM_SMOD_JUMBO_ENA;
2262 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2264 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2266 err = sky2_alloc_rx_skbs(sky2);
2268 sky2_rx_start(sky2);
2270 sky2_rx_clean(sky2);
2271 sky2_write32(hw, B0_IMSK, imask);
2273 sky2_read32(hw, B0_Y2_SP_LISR);
2274 napi_enable(&hw->napi);
2279 gma_write16(hw, port, GM_GP_CTRL, ctl);
2281 netif_wake_queue(dev);
2287 /* For small just reuse existing skb for next receive */
2288 static struct sk_buff *receive_copy(struct sky2_port *sky2,
2289 const struct rx_ring_info *re,
2292 struct sk_buff *skb;
2294 skb = netdev_alloc_skb_ip_align(sky2->netdev, length);
2296 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2297 length, PCI_DMA_FROMDEVICE);
2298 skb_copy_from_linear_data(re->skb, skb->data, length);
2299 skb->ip_summed = re->skb->ip_summed;
2300 skb->csum = re->skb->csum;
2301 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2302 length, PCI_DMA_FROMDEVICE);
2303 re->skb->ip_summed = CHECKSUM_NONE;
2304 skb_put(skb, length);
2309 /* Adjust length of skb with fragments to match received data */
2310 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2311 unsigned int length)
2316 /* put header into skb */
2317 size = min(length, hdr_space);
2322 num_frags = skb_shinfo(skb)->nr_frags;
2323 for (i = 0; i < num_frags; i++) {
2324 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2327 /* don't need this page */
2328 __free_page(frag->page);
2329 --skb_shinfo(skb)->nr_frags;
2331 size = min(length, (unsigned) PAGE_SIZE);
2334 skb->data_len += size;
2335 skb->truesize += size;
2342 /* Normal packet - take skb from ring element and put in a new one */
2343 static struct sk_buff *receive_new(struct sky2_port *sky2,
2344 struct rx_ring_info *re,
2345 unsigned int length)
2347 struct sk_buff *skb;
2348 struct rx_ring_info nre;
2349 unsigned hdr_space = sky2->rx_data_size;
2351 nre.skb = sky2_rx_alloc(sky2);
2352 if (unlikely(!nre.skb))
2355 if (sky2_rx_map_skb(sky2->hw->pdev, &nre, hdr_space))
2359 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2360 prefetch(skb->data);
2363 if (skb_shinfo(skb)->nr_frags)
2364 skb_put_frags(skb, hdr_space, length);
2366 skb_put(skb, length);
2370 dev_kfree_skb(nre.skb);
2376 * Receive one packet.
2377 * For larger packets, get new buffer.
2379 static struct sk_buff *sky2_receive(struct net_device *dev,
2380 u16 length, u32 status)
2382 struct sky2_port *sky2 = netdev_priv(dev);
2383 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2384 struct sk_buff *skb = NULL;
2385 u16 count = (status & GMR_FS_LEN) >> 16;
2387 #ifdef SKY2_VLAN_TAG_USED
2388 /* Account for vlan tag */
2389 if (sky2->vlgrp && (status & GMR_FS_VLAN))
2393 netif_printk(sky2, rx_status, KERN_DEBUG, dev,
2394 "rx slot %u status 0x%x len %d\n",
2395 sky2->rx_next, status, length);
2397 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2398 prefetch(sky2->rx_ring + sky2->rx_next);
2400 /* This chip has hardware problems that generates bogus status.
2401 * So do only marginal checking and expect higher level protocols
2402 * to handle crap frames.
2404 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2405 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2409 if (status & GMR_FS_ANY_ERR)
2412 if (!(status & GMR_FS_RX_OK))
2415 /* if length reported by DMA does not match PHY, packet was truncated */
2416 if (length != count)
2420 if (length < copybreak)
2421 skb = receive_copy(sky2, re, length);
2423 skb = receive_new(sky2, re, length);
2425 dev->stats.rx_dropped += (skb == NULL);
2428 sky2_rx_submit(sky2, re);
2433 /* Truncation of overlength packets
2434 causes PHY length to not match MAC length */
2435 ++dev->stats.rx_length_errors;
2436 if (net_ratelimit())
2437 netif_info(sky2, rx_err, dev,
2438 "rx length error: status %#x length %d\n",
2443 ++dev->stats.rx_errors;
2444 if (status & GMR_FS_RX_FF_OV) {
2445 dev->stats.rx_over_errors++;
2449 if (net_ratelimit())
2450 netif_info(sky2, rx_err, dev,
2451 "rx error, status 0x%x length %d\n", status, length);
2453 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
2454 dev->stats.rx_length_errors++;
2455 if (status & GMR_FS_FRAGMENT)
2456 dev->stats.rx_frame_errors++;
2457 if (status & GMR_FS_CRC_ERR)
2458 dev->stats.rx_crc_errors++;
2463 /* Transmit complete */
2464 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2466 struct sky2_port *sky2 = netdev_priv(dev);
2468 if (netif_running(dev)) {
2469 sky2_tx_complete(sky2, last);
2471 /* Wake unless it's detached, and called e.g. from sky2_down() */
2472 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
2473 netif_wake_queue(dev);
2477 static inline void sky2_skb_rx(const struct sky2_port *sky2,
2478 u32 status, struct sk_buff *skb)
2480 #ifdef SKY2_VLAN_TAG_USED
2481 u16 vlan_tag = be16_to_cpu(sky2->rx_tag);
2482 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
2483 if (skb->ip_summed == CHECKSUM_NONE)
2484 vlan_hwaccel_receive_skb(skb, sky2->vlgrp, vlan_tag);
2486 vlan_gro_receive(&sky2->hw->napi, sky2->vlgrp,
2491 if (skb->ip_summed == CHECKSUM_NONE)
2492 netif_receive_skb(skb);
2494 napi_gro_receive(&sky2->hw->napi, skb);
2497 static inline void sky2_rx_done(struct sky2_hw *hw, unsigned port,
2498 unsigned packets, unsigned bytes)
2501 struct net_device *dev = hw->dev[port];
2503 dev->stats.rx_packets += packets;
2504 dev->stats.rx_bytes += bytes;
2505 dev->last_rx = jiffies;
2506 sky2_rx_update(netdev_priv(dev), rxqaddr[port]);
2510 static void sky2_rx_checksum(struct sky2_port *sky2, u32 status)
2512 /* If this happens then driver assuming wrong format for chip type */
2513 BUG_ON(sky2->hw->flags & SKY2_HW_NEW_LE);
2515 /* Both checksum counters are programmed to start at
2516 * the same offset, so unless there is a problem they
2517 * should match. This failure is an early indication that
2518 * hardware receive checksumming won't work.
2520 if (likely((u16)(status >> 16) == (u16)status)) {
2521 struct sk_buff *skb = sky2->rx_ring[sky2->rx_next].skb;
2522 skb->ip_summed = CHECKSUM_COMPLETE;
2523 skb->csum = le16_to_cpu(status);
2525 dev_notice(&sky2->hw->pdev->dev,
2526 "%s: receive checksum problem (status = %#x)\n",
2527 sky2->netdev->name, status);
2529 /* Disable checksum offload */
2530 sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM;
2531 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2536 /* Process status response ring */
2537 static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
2540 unsigned int total_bytes[2] = { 0 };
2541 unsigned int total_packets[2] = { 0 };
2545 struct sky2_port *sky2;
2546 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2548 struct net_device *dev;
2549 struct sk_buff *skb;
2552 u8 opcode = le->opcode;
2554 if (!(opcode & HW_OWNER))
2557 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
2559 port = le->css & CSS_LINK_BIT;
2560 dev = hw->dev[port];
2561 sky2 = netdev_priv(dev);
2562 length = le16_to_cpu(le->length);
2563 status = le32_to_cpu(le->status);
2566 switch (opcode & ~HW_OWNER) {
2568 total_packets[port]++;
2569 total_bytes[port] += length;
2571 skb = sky2_receive(dev, length, status);
2575 /* This chip reports checksum status differently */
2576 if (hw->flags & SKY2_HW_NEW_LE) {
2577 if ((sky2->flags & SKY2_FLAG_RX_CHECKSUM) &&
2578 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2579 (le->css & CSS_TCPUDPCSOK))
2580 skb->ip_summed = CHECKSUM_UNNECESSARY;
2582 skb->ip_summed = CHECKSUM_NONE;
2585 skb->protocol = eth_type_trans(skb, dev);
2587 sky2_skb_rx(sky2, status, skb);
2589 /* Stop after net poll weight */
2590 if (++work_done >= to_do)
2594 #ifdef SKY2_VLAN_TAG_USED
2596 sky2->rx_tag = length;
2600 sky2->rx_tag = length;
2604 if (likely(sky2->flags & SKY2_FLAG_RX_CHECKSUM))
2605 sky2_rx_checksum(sky2, status);
2609 /* TX index reports status for both ports */
2610 sky2_tx_done(hw->dev[0], status & 0xfff);
2612 sky2_tx_done(hw->dev[1],
2613 ((status >> 24) & 0xff)
2614 | (u16)(length & 0xf) << 8);
2618 if (net_ratelimit())
2619 pr_warning("unknown status opcode 0x%x\n", opcode);
2621 } while (hw->st_idx != idx);
2623 /* Fully processed status ring so clear irq */
2624 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2627 sky2_rx_done(hw, 0, total_packets[0], total_bytes[0]);
2628 sky2_rx_done(hw, 1, total_packets[1], total_bytes[1]);
2633 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2635 struct net_device *dev = hw->dev[port];
2637 if (net_ratelimit())
2638 netdev_info(dev, "hw error interrupt status 0x%x\n", status);
2640 if (status & Y2_IS_PAR_RD1) {
2641 if (net_ratelimit())
2642 netdev_err(dev, "ram data read parity error\n");
2644 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2647 if (status & Y2_IS_PAR_WR1) {
2648 if (net_ratelimit())
2649 netdev_err(dev, "ram data write parity error\n");
2651 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2654 if (status & Y2_IS_PAR_MAC1) {
2655 if (net_ratelimit())
2656 netdev_err(dev, "MAC parity error\n");
2657 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2660 if (status & Y2_IS_PAR_RX1) {
2661 if (net_ratelimit())
2662 netdev_err(dev, "RX parity error\n");
2663 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2666 if (status & Y2_IS_TCP_TXA1) {
2667 if (net_ratelimit())
2668 netdev_err(dev, "TCP segmentation error\n");
2669 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2673 static void sky2_hw_intr(struct sky2_hw *hw)
2675 struct pci_dev *pdev = hw->pdev;
2676 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2677 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2681 if (status & Y2_IS_TIST_OV)
2682 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2684 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2687 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2688 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2689 if (net_ratelimit())
2690 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
2693 sky2_pci_write16(hw, PCI_STATUS,
2694 pci_err | PCI_STATUS_ERROR_BITS);
2695 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2698 if (status & Y2_IS_PCI_EXP) {
2699 /* PCI-Express uncorrectable Error occurred */
2702 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2703 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2704 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2706 if (net_ratelimit())
2707 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
2709 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2710 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2713 if (status & Y2_HWE_L1_MASK)
2714 sky2_hw_error(hw, 0, status);
2716 if (status & Y2_HWE_L1_MASK)
2717 sky2_hw_error(hw, 1, status);
2720 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2722 struct net_device *dev = hw->dev[port];
2723 struct sky2_port *sky2 = netdev_priv(dev);
2724 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2726 netif_info(sky2, intr, dev, "mac interrupt status 0x%x\n", status);
2728 if (status & GM_IS_RX_CO_OV)
2729 gma_read16(hw, port, GM_RX_IRQ_SRC);
2731 if (status & GM_IS_TX_CO_OV)
2732 gma_read16(hw, port, GM_TX_IRQ_SRC);
2734 if (status & GM_IS_RX_FF_OR) {
2735 ++dev->stats.rx_fifo_errors;
2736 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2739 if (status & GM_IS_TX_FF_UR) {
2740 ++dev->stats.tx_fifo_errors;
2741 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2745 /* This should never happen it is a bug. */
2746 static void sky2_le_error(struct sky2_hw *hw, unsigned port, u16 q)
2748 struct net_device *dev = hw->dev[port];
2749 u16 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2751 dev_err(&hw->pdev->dev, "%s: descriptor error q=%#x get=%u put=%u\n",
2752 dev->name, (unsigned) q, (unsigned) idx,
2753 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2755 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2758 static int sky2_rx_hung(struct net_device *dev)
2760 struct sky2_port *sky2 = netdev_priv(dev);
2761 struct sky2_hw *hw = sky2->hw;
2762 unsigned port = sky2->port;
2763 unsigned rxq = rxqaddr[port];
2764 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2765 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2766 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2767 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2769 /* If idle and MAC or PCI is stuck */
2770 if (sky2->check.last == dev->last_rx &&
2771 ((mac_rp == sky2->check.mac_rp &&
2772 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2773 /* Check if the PCI RX hang */
2774 (fifo_rp == sky2->check.fifo_rp &&
2775 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2776 netdev_printk(KERN_DEBUG, dev,
2777 "hung mac %d:%d fifo %d (%d:%d)\n",
2778 mac_lev, mac_rp, fifo_lev,
2779 fifo_rp, sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2782 sky2->check.last = dev->last_rx;
2783 sky2->check.mac_rp = mac_rp;
2784 sky2->check.mac_lev = mac_lev;
2785 sky2->check.fifo_rp = fifo_rp;
2786 sky2->check.fifo_lev = fifo_lev;
2791 static void sky2_watchdog(unsigned long arg)
2793 struct sky2_hw *hw = (struct sky2_hw *) arg;
2795 /* Check for lost IRQ once a second */
2796 if (sky2_read32(hw, B0_ISRC)) {
2797 napi_schedule(&hw->napi);
2801 for (i = 0; i < hw->ports; i++) {
2802 struct net_device *dev = hw->dev[i];
2803 if (!netif_running(dev))
2807 /* For chips with Rx FIFO, check if stuck */
2808 if ((hw->flags & SKY2_HW_RAM_BUFFER) &&
2809 sky2_rx_hung(dev)) {
2810 netdev_info(dev, "receiver hang detected\n");
2811 schedule_work(&hw->restart_work);
2820 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
2823 /* Hardware/software error handling */
2824 static void sky2_err_intr(struct sky2_hw *hw, u32 status)
2826 if (net_ratelimit())
2827 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
2829 if (status & Y2_IS_HW_ERR)
2832 if (status & Y2_IS_IRQ_MAC1)
2833 sky2_mac_intr(hw, 0);
2835 if (status & Y2_IS_IRQ_MAC2)
2836 sky2_mac_intr(hw, 1);
2838 if (status & Y2_IS_CHK_RX1)
2839 sky2_le_error(hw, 0, Q_R1);
2841 if (status & Y2_IS_CHK_RX2)
2842 sky2_le_error(hw, 1, Q_R2);
2844 if (status & Y2_IS_CHK_TXA1)
2845 sky2_le_error(hw, 0, Q_XA1);
2847 if (status & Y2_IS_CHK_TXA2)
2848 sky2_le_error(hw, 1, Q_XA2);
2851 static int sky2_poll(struct napi_struct *napi, int work_limit)
2853 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
2854 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2858 if (unlikely(status & Y2_IS_ERROR))
2859 sky2_err_intr(hw, status);
2861 if (status & Y2_IS_IRQ_PHY1)
2862 sky2_phy_intr(hw, 0);
2864 if (status & Y2_IS_IRQ_PHY2)
2865 sky2_phy_intr(hw, 1);
2867 if (status & Y2_IS_PHY_QLNK)
2868 sky2_qlink_intr(hw);
2870 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
2871 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
2873 if (work_done >= work_limit)
2877 napi_complete(napi);
2878 sky2_read32(hw, B0_Y2_SP_LISR);
2884 static irqreturn_t sky2_intr(int irq, void *dev_id)
2886 struct sky2_hw *hw = dev_id;
2889 /* Reading this mask interrupts as side effect */
2890 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2891 if (status == 0 || status == ~0)
2894 prefetch(&hw->st_le[hw->st_idx]);
2896 napi_schedule(&hw->napi);
2901 #ifdef CONFIG_NET_POLL_CONTROLLER
2902 static void sky2_netpoll(struct net_device *dev)
2904 struct sky2_port *sky2 = netdev_priv(dev);
2906 napi_schedule(&sky2->hw->napi);
2910 /* Chip internal frequency for clock calculations */
2911 static u32 sky2_mhz(const struct sky2_hw *hw)
2913 switch (hw->chip_id) {
2914 case CHIP_ID_YUKON_EC:
2915 case CHIP_ID_YUKON_EC_U:
2916 case CHIP_ID_YUKON_EX:
2917 case CHIP_ID_YUKON_SUPR:
2918 case CHIP_ID_YUKON_UL_2:
2919 case CHIP_ID_YUKON_OPT:
2922 case CHIP_ID_YUKON_FE:
2925 case CHIP_ID_YUKON_FE_P:
2928 case CHIP_ID_YUKON_XL:
2936 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2938 return sky2_mhz(hw) * us;
2941 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2943 return clk / sky2_mhz(hw);
2947 static int __devinit sky2_init(struct sky2_hw *hw)
2951 /* Enable all clocks and check for bad PCI access */
2952 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
2954 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2956 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2957 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2959 switch(hw->chip_id) {
2960 case CHIP_ID_YUKON_XL:
2961 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
2964 case CHIP_ID_YUKON_EC_U:
2965 hw->flags = SKY2_HW_GIGABIT
2967 | SKY2_HW_ADV_POWER_CTL;
2970 case CHIP_ID_YUKON_EX:
2971 hw->flags = SKY2_HW_GIGABIT
2974 | SKY2_HW_ADV_POWER_CTL;
2976 /* New transmit checksum */
2977 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
2978 hw->flags |= SKY2_HW_AUTO_TX_SUM;
2981 case CHIP_ID_YUKON_EC:
2982 /* This rev is really old, and requires untested workarounds */
2983 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
2984 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
2987 hw->flags = SKY2_HW_GIGABIT;
2990 case CHIP_ID_YUKON_FE:
2993 case CHIP_ID_YUKON_FE_P:
2994 hw->flags = SKY2_HW_NEWER_PHY
2996 | SKY2_HW_AUTO_TX_SUM
2997 | SKY2_HW_ADV_POWER_CTL;
3000 case CHIP_ID_YUKON_SUPR:
3001 hw->flags = SKY2_HW_GIGABIT
3004 | SKY2_HW_AUTO_TX_SUM
3005 | SKY2_HW_ADV_POWER_CTL;
3008 case CHIP_ID_YUKON_UL_2:
3009 hw->flags = SKY2_HW_GIGABIT
3010 | SKY2_HW_ADV_POWER_CTL;
3013 case CHIP_ID_YUKON_OPT:
3014 hw->flags = SKY2_HW_GIGABIT
3016 | SKY2_HW_ADV_POWER_CTL;
3020 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
3025 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
3026 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
3027 hw->flags |= SKY2_HW_FIBRE_PHY;
3030 t8 = sky2_read8(hw, B2_Y2_HW_RES);
3031 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
3032 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
3036 if (sky2_read8(hw, B2_E_0))
3037 hw->flags |= SKY2_HW_RAM_BUFFER;
3042 static void sky2_reset(struct sky2_hw *hw)
3044 struct pci_dev *pdev = hw->pdev;
3047 u32 hwe_mask = Y2_HWE_ALL_MASK;
3050 if (hw->chip_id == CHIP_ID_YUKON_EX
3051 || hw->chip_id == CHIP_ID_YUKON_SUPR) {
3052 sky2_write32(hw, CPU_WDOG, 0);
3053 status = sky2_read16(hw, HCU_CCSR);
3054 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
3055 HCU_CCSR_UC_STATE_MSK);
3057 * CPU clock divider shouldn't be used because
3058 * - ASF firmware may malfunction
3059 * - Yukon-Supreme: Parallel FLASH doesn't support divided clocks
3061 status &= ~HCU_CCSR_CPU_CLK_DIVIDE_MSK;
3062 sky2_write16(hw, HCU_CCSR, status);
3063 sky2_write32(hw, CPU_WDOG, 0);
3065 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
3066 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
3069 sky2_write8(hw, B0_CTST, CS_RST_SET);
3070 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3072 /* allow writes to PCI config */
3073 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3075 /* clear PCI errors, if any */
3076 status = sky2_pci_read16(hw, PCI_STATUS);
3077 status |= PCI_STATUS_ERROR_BITS;
3078 sky2_pci_write16(hw, PCI_STATUS, status);
3080 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
3082 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3084 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
3087 /* If error bit is stuck on ignore it */
3088 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
3089 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
3091 hwe_mask |= Y2_IS_PCI_EXP;
3095 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3097 for (i = 0; i < hw->ports; i++) {
3098 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
3099 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
3101 if (hw->chip_id == CHIP_ID_YUKON_EX ||
3102 hw->chip_id == CHIP_ID_YUKON_SUPR)
3103 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
3104 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
3109 if (hw->chip_id == CHIP_ID_YUKON_SUPR && hw->chip_rev > CHIP_REV_YU_SU_B0) {
3110 /* enable MACSec clock gating */
3111 sky2_pci_write32(hw, PCI_DEV_REG3, P_CLK_MACSEC_DIS);
3114 if (hw->chip_id == CHIP_ID_YUKON_OPT) {
3118 if (hw->chip_rev == 0) {
3119 /* disable PCI-E PHY power down (set PHY reg 0x80, bit 7 */
3120 sky2_write32(hw, Y2_PEX_PHY_DATA, (0x80UL << 16) | (1 << 7));
3122 /* set PHY Link Detect Timer to 1.1 second (11x 100ms) */
3125 /* set PHY Link Detect Timer to 0.4 second (4x 100ms) */
3129 reg <<= PSM_CONFIG_REG4_TIMER_PHY_LINK_DETECT_BASE;
3131 /* reset PHY Link Detect */
3132 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3133 sky2_pci_write16(hw, PSM_CONFIG_REG4,
3134 reg | PSM_CONFIG_REG4_RST_PHY_LINK_DETECT);
3135 sky2_pci_write16(hw, PSM_CONFIG_REG4, reg);
3138 /* enable PHY Quick Link */
3139 msk = sky2_read32(hw, B0_IMSK);
3140 msk |= Y2_IS_PHY_QLNK;
3141 sky2_write32(hw, B0_IMSK, msk);
3143 /* check if PSMv2 was running before */
3144 reg = sky2_pci_read16(hw, PSM_CONFIG_REG3);
3145 if (reg & PCI_EXP_LNKCTL_ASPMC) {
3146 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3147 /* restore the PCIe Link Control register */
3148 sky2_pci_write16(hw, cap + PCI_EXP_LNKCTL, reg);
3150 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3152 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3153 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3156 /* Clear I2C IRQ noise */
3157 sky2_write32(hw, B2_I2C_IRQ, 1);
3159 /* turn off hardware timer (unused) */
3160 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
3161 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
3163 /* Turn off descriptor polling */
3164 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
3166 /* Turn off receive timestamp */
3167 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
3168 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
3170 /* enable the Tx Arbiters */
3171 for (i = 0; i < hw->ports; i++)
3172 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3174 /* Initialize ram interface */
3175 for (i = 0; i < hw->ports; i++) {
3176 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
3178 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
3179 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
3180 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
3181 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
3182 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
3183 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
3184 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
3185 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
3186 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
3187 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
3188 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
3189 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
3192 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
3194 for (i = 0; i < hw->ports; i++)
3195 sky2_gmac_reset(hw, i);
3197 memset(hw->st_le, 0, STATUS_LE_BYTES);
3200 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
3201 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
3203 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
3204 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
3206 /* Set the list last index */
3207 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
3209 sky2_write16(hw, STAT_TX_IDX_TH, 10);
3210 sky2_write8(hw, STAT_FIFO_WM, 16);
3212 /* set Status-FIFO ISR watermark */
3213 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
3214 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
3216 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
3218 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
3219 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
3220 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
3222 /* enable status unit */
3223 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
3225 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3226 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3227 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3230 /* Take device down (offline).
3231 * Equivalent to doing dev_stop() but this does not
3232 * inform upper layers of the transistion.
3234 static void sky2_detach(struct net_device *dev)
3236 if (netif_running(dev)) {
3238 netif_device_detach(dev); /* stop txq */
3239 netif_tx_unlock(dev);
3244 /* Bring device back after doing sky2_detach */
3245 static int sky2_reattach(struct net_device *dev)
3249 if (netif_running(dev)) {
3252 netdev_info(dev, "could not restart %d\n", err);
3255 netif_device_attach(dev);
3256 sky2_set_multicast(dev);
3263 static void sky2_restart(struct work_struct *work)
3265 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
3271 napi_disable(&hw->napi);
3272 synchronize_irq(hw->pdev->irq);
3273 imask = sky2_read32(hw, B0_IMSK);
3274 sky2_write32(hw, B0_IMSK, 0);
3276 for (i = 0; i < hw->ports; i++) {
3277 struct net_device *dev = hw->dev[i];
3278 struct sky2_port *sky2 = netdev_priv(dev);
3280 if (!netif_running(dev))
3283 netif_carrier_off(dev);
3284 netif_tx_disable(dev);
3290 for (i = 0; i < hw->ports; i++) {
3291 struct net_device *dev = hw->dev[i];
3292 struct sky2_port *sky2 = netdev_priv(dev);
3294 if (!netif_running(dev))
3298 netif_wake_queue(dev);
3301 sky2_write32(hw, B0_IMSK, imask);
3302 sky2_read32(hw, B0_IMSK);
3304 sky2_read32(hw, B0_Y2_SP_LISR);
3305 napi_enable(&hw->napi);
3310 static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
3312 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
3315 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3317 const struct sky2_port *sky2 = netdev_priv(dev);
3319 wol->supported = sky2_wol_supported(sky2->hw);
3320 wol->wolopts = sky2->wol;
3323 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3325 struct sky2_port *sky2 = netdev_priv(dev);
3326 struct sky2_hw *hw = sky2->hw;
3328 if ((wol->wolopts & ~sky2_wol_supported(sky2->hw)) ||
3329 !device_can_wakeup(&hw->pdev->dev))
3332 sky2->wol = wol->wolopts;
3336 static u32 sky2_supported_modes(const struct sky2_hw *hw)
3338 if (sky2_is_copper(hw)) {
3339 u32 modes = SUPPORTED_10baseT_Half
3340 | SUPPORTED_10baseT_Full
3341 | SUPPORTED_100baseT_Half
3342 | SUPPORTED_100baseT_Full
3343 | SUPPORTED_Autoneg | SUPPORTED_TP;
3345 if (hw->flags & SKY2_HW_GIGABIT)
3346 modes |= SUPPORTED_1000baseT_Half
3347 | SUPPORTED_1000baseT_Full;
3350 return SUPPORTED_1000baseT_Half
3351 | SUPPORTED_1000baseT_Full
3356 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3358 struct sky2_port *sky2 = netdev_priv(dev);
3359 struct sky2_hw *hw = sky2->hw;
3361 ecmd->transceiver = XCVR_INTERNAL;
3362 ecmd->supported = sky2_supported_modes(hw);
3363 ecmd->phy_address = PHY_ADDR_MARV;
3364 if (sky2_is_copper(hw)) {
3365 ecmd->port = PORT_TP;
3366 ecmd->speed = sky2->speed;
3368 ecmd->speed = SPEED_1000;
3369 ecmd->port = PORT_FIBRE;
3372 ecmd->advertising = sky2->advertising;
3373 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_SPEED)
3374 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3375 ecmd->duplex = sky2->duplex;
3379 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3381 struct sky2_port *sky2 = netdev_priv(dev);
3382 const struct sky2_hw *hw = sky2->hw;
3383 u32 supported = sky2_supported_modes(hw);
3385 if (ecmd->autoneg == AUTONEG_ENABLE) {
3386 sky2->flags |= SKY2_FLAG_AUTO_SPEED;
3387 ecmd->advertising = supported;
3393 switch (ecmd->speed) {
3395 if (ecmd->duplex == DUPLEX_FULL)
3396 setting = SUPPORTED_1000baseT_Full;
3397 else if (ecmd->duplex == DUPLEX_HALF)
3398 setting = SUPPORTED_1000baseT_Half;
3403 if (ecmd->duplex == DUPLEX_FULL)
3404 setting = SUPPORTED_100baseT_Full;
3405 else if (ecmd->duplex == DUPLEX_HALF)
3406 setting = SUPPORTED_100baseT_Half;
3412 if (ecmd->duplex == DUPLEX_FULL)
3413 setting = SUPPORTED_10baseT_Full;
3414 else if (ecmd->duplex == DUPLEX_HALF)
3415 setting = SUPPORTED_10baseT_Half;
3423 if ((setting & supported) == 0)
3426 sky2->speed = ecmd->speed;
3427 sky2->duplex = ecmd->duplex;
3428 sky2->flags &= ~SKY2_FLAG_AUTO_SPEED;
3431 sky2->advertising = ecmd->advertising;
3433 if (netif_running(dev)) {
3434 sky2_phy_reinit(sky2);
3435 sky2_set_multicast(dev);
3441 static void sky2_get_drvinfo(struct net_device *dev,
3442 struct ethtool_drvinfo *info)
3444 struct sky2_port *sky2 = netdev_priv(dev);
3446 strcpy(info->driver, DRV_NAME);
3447 strcpy(info->version, DRV_VERSION);
3448 strcpy(info->fw_version, "N/A");
3449 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
3452 static const struct sky2_stat {
3453 char name[ETH_GSTRING_LEN];
3456 { "tx_bytes", GM_TXO_OK_HI },
3457 { "rx_bytes", GM_RXO_OK_HI },
3458 { "tx_broadcast", GM_TXF_BC_OK },
3459 { "rx_broadcast", GM_RXF_BC_OK },
3460 { "tx_multicast", GM_TXF_MC_OK },
3461 { "rx_multicast", GM_RXF_MC_OK },
3462 { "tx_unicast", GM_TXF_UC_OK },
3463 { "rx_unicast", GM_RXF_UC_OK },
3464 { "tx_mac_pause", GM_TXF_MPAUSE },
3465 { "rx_mac_pause", GM_RXF_MPAUSE },
3466 { "collisions", GM_TXF_COL },
3467 { "late_collision",GM_TXF_LAT_COL },
3468 { "aborted", GM_TXF_ABO_COL },
3469 { "single_collisions", GM_TXF_SNG_COL },
3470 { "multi_collisions", GM_TXF_MUL_COL },
3472 { "rx_short", GM_RXF_SHT },
3473 { "rx_runt", GM_RXE_FRAG },
3474 { "rx_64_byte_packets", GM_RXF_64B },
3475 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3476 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3477 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3478 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3479 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3480 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3481 { "rx_too_long", GM_RXF_LNG_ERR },
3482 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3483 { "rx_jabber", GM_RXF_JAB_PKT },
3484 { "rx_fcs_error", GM_RXF_FCS_ERR },
3486 { "tx_64_byte_packets", GM_TXF_64B },
3487 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3488 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3489 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3490 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3491 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3492 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3493 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3496 static u32 sky2_get_rx_csum(struct net_device *dev)
3498 struct sky2_port *sky2 = netdev_priv(dev);
3500 return !!(sky2->flags & SKY2_FLAG_RX_CHECKSUM);
3503 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
3505 struct sky2_port *sky2 = netdev_priv(dev);
3508 sky2->flags |= SKY2_FLAG_RX_CHECKSUM;
3510 sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM;
3512 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
3513 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
3518 static u32 sky2_get_msglevel(struct net_device *netdev)
3520 struct sky2_port *sky2 = netdev_priv(netdev);
3521 return sky2->msg_enable;
3524 static int sky2_nway_reset(struct net_device *dev)
3526 struct sky2_port *sky2 = netdev_priv(dev);
3528 if (!netif_running(dev) || !(sky2->flags & SKY2_FLAG_AUTO_SPEED))
3531 sky2_phy_reinit(sky2);
3532 sky2_set_multicast(dev);
3537 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3539 struct sky2_hw *hw = sky2->hw;
3540 unsigned port = sky2->port;
3543 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
3544 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
3545 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
3546 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
3548 for (i = 2; i < count; i++)
3549 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
3552 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3554 struct sky2_port *sky2 = netdev_priv(netdev);
3555 sky2->msg_enable = value;
3558 static int sky2_get_sset_count(struct net_device *dev, int sset)
3562 return ARRAY_SIZE(sky2_stats);
3568 static void sky2_get_ethtool_stats(struct net_device *dev,
3569 struct ethtool_stats *stats, u64 * data)
3571 struct sky2_port *sky2 = netdev_priv(dev);
3573 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3576 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3580 switch (stringset) {
3582 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3583 memcpy(data + i * ETH_GSTRING_LEN,
3584 sky2_stats[i].name, ETH_GSTRING_LEN);
3589 static int sky2_set_mac_address(struct net_device *dev, void *p)
3591 struct sky2_port *sky2 = netdev_priv(dev);
3592 struct sky2_hw *hw = sky2->hw;
3593 unsigned port = sky2->port;
3594 const struct sockaddr *addr = p;
3596 if (!is_valid_ether_addr(addr->sa_data))
3597 return -EADDRNOTAVAIL;
3599 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3600 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3601 dev->dev_addr, ETH_ALEN);
3602 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3603 dev->dev_addr, ETH_ALEN);
3605 /* virtual address for data */
3606 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3608 /* physical address: used for pause frames */
3609 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3614 static void inline sky2_add_filter(u8 filter[8], const u8 *addr)
3618 bit = ether_crc(ETH_ALEN, addr) & 63;
3619 filter[bit >> 3] |= 1 << (bit & 7);
3622 static void sky2_set_multicast(struct net_device *dev)
3624 struct sky2_port *sky2 = netdev_priv(dev);
3625 struct sky2_hw *hw = sky2->hw;
3626 unsigned port = sky2->port;
3627 struct dev_mc_list *list;
3631 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3633 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3634 memset(filter, 0, sizeof(filter));
3636 reg = gma_read16(hw, port, GM_RX_CTRL);
3637 reg |= GM_RXCR_UCF_ENA;
3639 if (dev->flags & IFF_PROMISC) /* promiscuous */
3640 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3641 else if (dev->flags & IFF_ALLMULTI)
3642 memset(filter, 0xff, sizeof(filter));
3643 else if (netdev_mc_empty(dev) && !rx_pause)
3644 reg &= ~GM_RXCR_MCF_ENA;
3646 reg |= GM_RXCR_MCF_ENA;
3649 sky2_add_filter(filter, pause_mc_addr);
3651 netdev_for_each_mc_addr(list, dev)
3652 sky2_add_filter(filter, list->dmi_addr);
3655 gma_write16(hw, port, GM_MC_ADDR_H1,
3656 (u16) filter[0] | ((u16) filter[1] << 8));
3657 gma_write16(hw, port, GM_MC_ADDR_H2,
3658 (u16) filter[2] | ((u16) filter[3] << 8));
3659 gma_write16(hw, port, GM_MC_ADDR_H3,
3660 (u16) filter[4] | ((u16) filter[5] << 8));
3661 gma_write16(hw, port, GM_MC_ADDR_H4,
3662 (u16) filter[6] | ((u16) filter[7] << 8));
3664 gma_write16(hw, port, GM_RX_CTRL, reg);
3667 /* Can have one global because blinking is controlled by
3668 * ethtool and that is always under RTNL mutex
3670 static void sky2_led(struct sky2_port *sky2, enum led_mode mode)
3672 struct sky2_hw *hw = sky2->hw;
3673 unsigned port = sky2->port;
3675 spin_lock_bh(&sky2->phy_lock);
3676 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3677 hw->chip_id == CHIP_ID_YUKON_EX ||
3678 hw->chip_id == CHIP_ID_YUKON_SUPR) {
3680 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3681 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3685 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3686 PHY_M_LEDC_LOS_CTRL(8) |
3687 PHY_M_LEDC_INIT_CTRL(8) |
3688 PHY_M_LEDC_STA1_CTRL(8) |
3689 PHY_M_LEDC_STA0_CTRL(8));
3692 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3693 PHY_M_LEDC_LOS_CTRL(9) |
3694 PHY_M_LEDC_INIT_CTRL(9) |
3695 PHY_M_LEDC_STA1_CTRL(9) |
3696 PHY_M_LEDC_STA0_CTRL(9));
3699 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3700 PHY_M_LEDC_LOS_CTRL(0xa) |
3701 PHY_M_LEDC_INIT_CTRL(0xa) |
3702 PHY_M_LEDC_STA1_CTRL(0xa) |
3703 PHY_M_LEDC_STA0_CTRL(0xa));
3706 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3707 PHY_M_LEDC_LOS_CTRL(1) |
3708 PHY_M_LEDC_INIT_CTRL(8) |
3709 PHY_M_LEDC_STA1_CTRL(7) |
3710 PHY_M_LEDC_STA0_CTRL(7));
3713 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3715 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3716 PHY_M_LED_MO_DUP(mode) |
3717 PHY_M_LED_MO_10(mode) |
3718 PHY_M_LED_MO_100(mode) |
3719 PHY_M_LED_MO_1000(mode) |
3720 PHY_M_LED_MO_RX(mode) |
3721 PHY_M_LED_MO_TX(mode));
3723 spin_unlock_bh(&sky2->phy_lock);
3726 /* blink LED's for finding board */
3727 static int sky2_phys_id(struct net_device *dev, u32 data)
3729 struct sky2_port *sky2 = netdev_priv(dev);
3735 for (i = 0; i < data; i++) {
3736 sky2_led(sky2, MO_LED_ON);
3737 if (msleep_interruptible(500))
3739 sky2_led(sky2, MO_LED_OFF);
3740 if (msleep_interruptible(500))
3743 sky2_led(sky2, MO_LED_NORM);
3748 static void sky2_get_pauseparam(struct net_device *dev,
3749 struct ethtool_pauseparam *ecmd)
3751 struct sky2_port *sky2 = netdev_priv(dev);
3753 switch (sky2->flow_mode) {
3755 ecmd->tx_pause = ecmd->rx_pause = 0;
3758 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
3761 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
3764 ecmd->tx_pause = ecmd->rx_pause = 1;
3767 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_PAUSE)
3768 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3771 static int sky2_set_pauseparam(struct net_device *dev,
3772 struct ethtool_pauseparam *ecmd)
3774 struct sky2_port *sky2 = netdev_priv(dev);
3776 if (ecmd->autoneg == AUTONEG_ENABLE)
3777 sky2->flags |= SKY2_FLAG_AUTO_PAUSE;
3779 sky2->flags &= ~SKY2_FLAG_AUTO_PAUSE;
3781 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
3783 if (netif_running(dev))
3784 sky2_phy_reinit(sky2);
3789 static int sky2_get_coalesce(struct net_device *dev,
3790 struct ethtool_coalesce *ecmd)
3792 struct sky2_port *sky2 = netdev_priv(dev);
3793 struct sky2_hw *hw = sky2->hw;
3795 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
3796 ecmd->tx_coalesce_usecs = 0;
3798 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
3799 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
3801 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
3803 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
3804 ecmd->rx_coalesce_usecs = 0;
3806 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
3807 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
3809 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
3811 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
3812 ecmd->rx_coalesce_usecs_irq = 0;
3814 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
3815 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
3818 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
3823 /* Note: this affect both ports */
3824 static int sky2_set_coalesce(struct net_device *dev,
3825 struct ethtool_coalesce *ecmd)
3827 struct sky2_port *sky2 = netdev_priv(dev);
3828 struct sky2_hw *hw = sky2->hw;
3829 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
3831 if (ecmd->tx_coalesce_usecs > tmax ||
3832 ecmd->rx_coalesce_usecs > tmax ||
3833 ecmd->rx_coalesce_usecs_irq > tmax)
3836 if (ecmd->tx_max_coalesced_frames >= sky2->tx_ring_size-1)
3838 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
3840 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
3843 if (ecmd->tx_coalesce_usecs == 0)
3844 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
3846 sky2_write32(hw, STAT_TX_TIMER_INI,
3847 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
3848 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3850 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
3852 if (ecmd->rx_coalesce_usecs == 0)
3853 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
3855 sky2_write32(hw, STAT_LEV_TIMER_INI,
3856 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
3857 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3859 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
3861 if (ecmd->rx_coalesce_usecs_irq == 0)
3862 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
3864 sky2_write32(hw, STAT_ISR_TIMER_INI,
3865 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
3866 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3868 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
3872 static void sky2_get_ringparam(struct net_device *dev,
3873 struct ethtool_ringparam *ering)
3875 struct sky2_port *sky2 = netdev_priv(dev);
3877 ering->rx_max_pending = RX_MAX_PENDING;
3878 ering->rx_mini_max_pending = 0;
3879 ering->rx_jumbo_max_pending = 0;
3880 ering->tx_max_pending = TX_MAX_PENDING;
3882 ering->rx_pending = sky2->rx_pending;
3883 ering->rx_mini_pending = 0;
3884 ering->rx_jumbo_pending = 0;
3885 ering->tx_pending = sky2->tx_pending;
3888 static int sky2_set_ringparam(struct net_device *dev,
3889 struct ethtool_ringparam *ering)
3891 struct sky2_port *sky2 = netdev_priv(dev);
3893 if (ering->rx_pending > RX_MAX_PENDING ||
3894 ering->rx_pending < 8 ||
3895 ering->tx_pending < TX_MIN_PENDING ||
3896 ering->tx_pending > TX_MAX_PENDING)
3901 sky2->rx_pending = ering->rx_pending;
3902 sky2->tx_pending = ering->tx_pending;
3903 sky2->tx_ring_size = roundup_pow_of_two(sky2->tx_pending+1);
3905 return sky2_reattach(dev);
3908 static int sky2_get_regs_len(struct net_device *dev)
3913 static int sky2_reg_access_ok(struct sky2_hw *hw, unsigned int b)
3915 /* This complicated switch statement is to make sure and
3916 * only access regions that are unreserved.
3917 * Some blocks are only valid on dual port cards.
3921 case 5: /* Tx Arbiter 2 */
3923 case 14 ... 15: /* TX2 */
3924 case 17: case 19: /* Ram Buffer 2 */
3925 case 22 ... 23: /* Tx Ram Buffer 2 */
3926 case 25: /* Rx MAC Fifo 1 */
3927 case 27: /* Tx MAC Fifo 2 */
3928 case 31: /* GPHY 2 */
3929 case 40 ... 47: /* Pattern Ram 2 */
3930 case 52: case 54: /* TCP Segmentation 2 */
3931 case 112 ... 116: /* GMAC 2 */
3932 return hw->ports > 1;
3934 case 0: /* Control */
3935 case 2: /* Mac address */
3936 case 4: /* Tx Arbiter 1 */
3937 case 7: /* PCI express reg */
3939 case 12 ... 13: /* TX1 */
3940 case 16: case 18:/* Rx Ram Buffer 1 */
3941 case 20 ... 21: /* Tx Ram Buffer 1 */
3942 case 24: /* Rx MAC Fifo 1 */
3943 case 26: /* Tx MAC Fifo 1 */
3944 case 28 ... 29: /* Descriptor and status unit */
3945 case 30: /* GPHY 1*/
3946 case 32 ... 39: /* Pattern Ram 1 */
3947 case 48: case 50: /* TCP Segmentation 1 */
3948 case 56 ... 60: /* PCI space */
3949 case 80 ... 84: /* GMAC 1 */
3958 * Returns copy of control register region
3959 * Note: ethtool_get_regs always provides full size (16k) buffer
3961 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
3964 const struct sky2_port *sky2 = netdev_priv(dev);
3965 const void __iomem *io = sky2->hw->regs;
3970 for (b = 0; b < 128; b++) {
3971 /* skip poisonous diagnostic ram region in block 3 */
3973 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
3974 else if (sky2_reg_access_ok(sky2->hw, b))
3975 memcpy_fromio(p, io, 128);
3984 /* In order to do Jumbo packets on these chips, need to turn off the
3985 * transmit store/forward. Therefore checksum offload won't work.
3987 static int no_tx_offload(struct net_device *dev)
3989 const struct sky2_port *sky2 = netdev_priv(dev);
3990 const struct sky2_hw *hw = sky2->hw;
3992 return dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U;
3995 static int sky2_set_tx_csum(struct net_device *dev, u32 data)
3997 if (data && no_tx_offload(dev))
4000 return ethtool_op_set_tx_csum(dev, data);
4004 static int sky2_set_tso(struct net_device *dev, u32 data)
4006 if (data && no_tx_offload(dev))
4009 return ethtool_op_set_tso(dev, data);
4012 static int sky2_get_eeprom_len(struct net_device *dev)
4014 struct sky2_port *sky2 = netdev_priv(dev);
4015 struct sky2_hw *hw = sky2->hw;
4018 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4019 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4022 static int sky2_vpd_wait(const struct sky2_hw *hw, int cap, u16 busy)
4024 unsigned long start = jiffies;
4026 while ( (sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F) == busy) {
4027 /* Can take up to 10.6 ms for write */
4028 if (time_after(jiffies, start + HZ/4)) {
4029 dev_err(&hw->pdev->dev, "VPD cycle timed out\n");
4038 static int sky2_vpd_read(struct sky2_hw *hw, int cap, void *data,
4039 u16 offset, size_t length)
4043 while (length > 0) {
4046 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
4047 rc = sky2_vpd_wait(hw, cap, 0);
4051 val = sky2_pci_read32(hw, cap + PCI_VPD_DATA);
4053 memcpy(data, &val, min(sizeof(val), length));
4054 offset += sizeof(u32);
4055 data += sizeof(u32);
4056 length -= sizeof(u32);
4062 static int sky2_vpd_write(struct sky2_hw *hw, int cap, const void *data,
4063 u16 offset, unsigned int length)
4068 for (i = 0; i < length; i += sizeof(u32)) {
4069 u32 val = *(u32 *)(data + i);
4071 sky2_pci_write32(hw, cap + PCI_VPD_DATA, val);
4072 sky2_pci_write32(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
4074 rc = sky2_vpd_wait(hw, cap, PCI_VPD_ADDR_F);
4081 static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4084 struct sky2_port *sky2 = netdev_priv(dev);
4085 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4090 eeprom->magic = SKY2_EEPROM_MAGIC;
4092 return sky2_vpd_read(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4095 static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4098 struct sky2_port *sky2 = netdev_priv(dev);
4099 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4104 if (eeprom->magic != SKY2_EEPROM_MAGIC)
4107 /* Partial writes not supported */
4108 if ((eeprom->offset & 3) || (eeprom->len & 3))
4111 return sky2_vpd_write(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4115 static const struct ethtool_ops sky2_ethtool_ops = {
4116 .get_settings = sky2_get_settings,
4117 .set_settings = sky2_set_settings,
4118 .get_drvinfo = sky2_get_drvinfo,
4119 .get_wol = sky2_get_wol,
4120 .set_wol = sky2_set_wol,
4121 .get_msglevel = sky2_get_msglevel,
4122 .set_msglevel = sky2_set_msglevel,
4123 .nway_reset = sky2_nway_reset,
4124 .get_regs_len = sky2_get_regs_len,
4125 .get_regs = sky2_get_regs,
4126 .get_link = ethtool_op_get_link,
4127 .get_eeprom_len = sky2_get_eeprom_len,
4128 .get_eeprom = sky2_get_eeprom,
4129 .set_eeprom = sky2_set_eeprom,
4130 .set_sg = ethtool_op_set_sg,
4131 .set_tx_csum = sky2_set_tx_csum,
4132 .set_tso = sky2_set_tso,
4133 .get_rx_csum = sky2_get_rx_csum,
4134 .set_rx_csum = sky2_set_rx_csum,
4135 .get_strings = sky2_get_strings,
4136 .get_coalesce = sky2_get_coalesce,
4137 .set_coalesce = sky2_set_coalesce,
4138 .get_ringparam = sky2_get_ringparam,
4139 .set_ringparam = sky2_set_ringparam,
4140 .get_pauseparam = sky2_get_pauseparam,
4141 .set_pauseparam = sky2_set_pauseparam,
4142 .phys_id = sky2_phys_id,
4143 .get_sset_count = sky2_get_sset_count,
4144 .get_ethtool_stats = sky2_get_ethtool_stats,
4147 #ifdef CONFIG_SKY2_DEBUG
4149 static struct dentry *sky2_debug;
4153 * Read and parse the first part of Vital Product Data
4155 #define VPD_SIZE 128
4156 #define VPD_MAGIC 0x82
4158 static const struct vpd_tag {
4162 { "PN", "Part Number" },
4163 { "EC", "Engineering Level" },
4164 { "MN", "Manufacturer" },
4165 { "SN", "Serial Number" },
4166 { "YA", "Asset Tag" },
4167 { "VL", "First Error Log Message" },
4168 { "VF", "Second Error Log Message" },
4169 { "VB", "Boot Agent ROM Configuration" },
4170 { "VE", "EFI UNDI Configuration" },
4173 static void sky2_show_vpd(struct seq_file *seq, struct sky2_hw *hw)
4181 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4182 vpd_size = 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4184 seq_printf(seq, "%s Product Data\n", pci_name(hw->pdev));
4185 buf = kmalloc(vpd_size, GFP_KERNEL);
4187 seq_puts(seq, "no memory!\n");
4191 if (pci_read_vpd(hw->pdev, 0, vpd_size, buf) < 0) {
4192 seq_puts(seq, "VPD read failed\n");
4196 if (buf[0] != VPD_MAGIC) {
4197 seq_printf(seq, "VPD tag mismatch: %#x\n", buf[0]);
4201 if (len == 0 || len > vpd_size - 4) {
4202 seq_printf(seq, "Invalid id length: %d\n", len);
4206 seq_printf(seq, "%.*s\n", len, buf + 3);
4209 while (offs < vpd_size - 4) {
4212 if (!memcmp("RW", buf + offs, 2)) /* end marker */
4214 len = buf[offs + 2];
4215 if (offs + len + 3 >= vpd_size)
4218 for (i = 0; i < ARRAY_SIZE(vpd_tags); i++) {
4219 if (!memcmp(vpd_tags[i].tag, buf + offs, 2)) {
4220 seq_printf(seq, " %s: %.*s\n",
4221 vpd_tags[i].label, len, buf + offs + 3);
4231 static int sky2_debug_show(struct seq_file *seq, void *v)
4233 struct net_device *dev = seq->private;
4234 const struct sky2_port *sky2 = netdev_priv(dev);
4235 struct sky2_hw *hw = sky2->hw;
4236 unsigned port = sky2->port;
4240 sky2_show_vpd(seq, hw);
4242 seq_printf(seq, "\nIRQ src=%x mask=%x control=%x\n",
4243 sky2_read32(hw, B0_ISRC),
4244 sky2_read32(hw, B0_IMSK),
4245 sky2_read32(hw, B0_Y2_SP_ICR));
4247 if (!netif_running(dev)) {
4248 seq_printf(seq, "network not running\n");
4252 napi_disable(&hw->napi);
4253 last = sky2_read16(hw, STAT_PUT_IDX);
4255 if (hw->st_idx == last)
4256 seq_puts(seq, "Status ring (empty)\n");
4258 seq_puts(seq, "Status ring\n");
4259 for (idx = hw->st_idx; idx != last && idx < STATUS_RING_SIZE;
4260 idx = RING_NEXT(idx, STATUS_RING_SIZE)) {
4261 const struct sky2_status_le *le = hw->st_le + idx;
4262 seq_printf(seq, "[%d] %#x %d %#x\n",
4263 idx, le->opcode, le->length, le->status);
4265 seq_puts(seq, "\n");
4268 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
4269 sky2->tx_cons, sky2->tx_prod,
4270 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
4271 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
4273 /* Dump contents of tx ring */
4275 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < sky2->tx_ring_size;
4276 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
4277 const struct sky2_tx_le *le = sky2->tx_le + idx;
4278 u32 a = le32_to_cpu(le->addr);
4281 seq_printf(seq, "%u:", idx);
4284 switch(le->opcode & ~HW_OWNER) {
4286 seq_printf(seq, " %#x:", a);
4289 seq_printf(seq, " mtu=%d", a);
4292 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
4295 seq_printf(seq, " csum=%#x", a);
4298 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
4301 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
4304 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
4307 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
4308 a, le16_to_cpu(le->length));
4311 if (le->ctrl & EOP) {
4312 seq_putc(seq, '\n');
4317 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
4318 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
4319 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
4320 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
4322 sky2_read32(hw, B0_Y2_SP_LISR);
4323 napi_enable(&hw->napi);
4327 static int sky2_debug_open(struct inode *inode, struct file *file)
4329 return single_open(file, sky2_debug_show, inode->i_private);
4332 static const struct file_operations sky2_debug_fops = {
4333 .owner = THIS_MODULE,
4334 .open = sky2_debug_open,
4336 .llseek = seq_lseek,
4337 .release = single_release,
4341 * Use network device events to create/remove/rename
4342 * debugfs file entries
4344 static int sky2_device_event(struct notifier_block *unused,
4345 unsigned long event, void *ptr)
4347 struct net_device *dev = ptr;
4348 struct sky2_port *sky2 = netdev_priv(dev);
4350 if (dev->netdev_ops->ndo_open != sky2_up || !sky2_debug)
4354 case NETDEV_CHANGENAME:
4355 if (sky2->debugfs) {
4356 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
4357 sky2_debug, dev->name);
4361 case NETDEV_GOING_DOWN:
4362 if (sky2->debugfs) {
4363 netdev_printk(KERN_DEBUG, dev, "remove debugfs\n");
4364 debugfs_remove(sky2->debugfs);
4365 sky2->debugfs = NULL;
4370 sky2->debugfs = debugfs_create_file(dev->name, S_IRUGO,
4373 if (IS_ERR(sky2->debugfs))
4374 sky2->debugfs = NULL;
4380 static struct notifier_block sky2_notifier = {
4381 .notifier_call = sky2_device_event,
4385 static __init void sky2_debug_init(void)
4389 ent = debugfs_create_dir("sky2", NULL);
4390 if (!ent || IS_ERR(ent))
4394 register_netdevice_notifier(&sky2_notifier);
4397 static __exit void sky2_debug_cleanup(void)
4400 unregister_netdevice_notifier(&sky2_notifier);
4401 debugfs_remove(sky2_debug);
4407 #define sky2_debug_init()
4408 #define sky2_debug_cleanup()
4411 /* Two copies of network device operations to handle special case of
4412 not allowing netpoll on second port */
4413 static const struct net_device_ops sky2_netdev_ops[2] = {
4415 .ndo_open = sky2_up,
4416 .ndo_stop = sky2_down,
4417 .ndo_start_xmit = sky2_xmit_frame,
4418 .ndo_do_ioctl = sky2_ioctl,
4419 .ndo_validate_addr = eth_validate_addr,
4420 .ndo_set_mac_address = sky2_set_mac_address,
4421 .ndo_set_multicast_list = sky2_set_multicast,
4422 .ndo_change_mtu = sky2_change_mtu,
4423 .ndo_tx_timeout = sky2_tx_timeout,
4424 #ifdef SKY2_VLAN_TAG_USED
4425 .ndo_vlan_rx_register = sky2_vlan_rx_register,
4427 #ifdef CONFIG_NET_POLL_CONTROLLER
4428 .ndo_poll_controller = sky2_netpoll,
4432 .ndo_open = sky2_up,
4433 .ndo_stop = sky2_down,
4434 .ndo_start_xmit = sky2_xmit_frame,
4435 .ndo_do_ioctl = sky2_ioctl,
4436 .ndo_validate_addr = eth_validate_addr,
4437 .ndo_set_mac_address = sky2_set_mac_address,
4438 .ndo_set_multicast_list = sky2_set_multicast,
4439 .ndo_change_mtu = sky2_change_mtu,
4440 .ndo_tx_timeout = sky2_tx_timeout,
4441 #ifdef SKY2_VLAN_TAG_USED
4442 .ndo_vlan_rx_register = sky2_vlan_rx_register,
4447 /* Initialize network device */
4448 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
4450 int highmem, int wol)
4452 struct sky2_port *sky2;
4453 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
4456 dev_err(&hw->pdev->dev, "etherdev alloc failed\n");
4460 SET_NETDEV_DEV(dev, &hw->pdev->dev);
4461 dev->irq = hw->pdev->irq;
4462 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
4463 dev->watchdog_timeo = TX_WATCHDOG;
4464 dev->netdev_ops = &sky2_netdev_ops[port];
4466 sky2 = netdev_priv(dev);
4469 sky2->msg_enable = netif_msg_init(debug, default_msg);
4471 /* Auto speed and flow control */
4472 sky2->flags = SKY2_FLAG_AUTO_SPEED | SKY2_FLAG_AUTO_PAUSE;
4473 if (hw->chip_id != CHIP_ID_YUKON_XL)
4474 sky2->flags |= SKY2_FLAG_RX_CHECKSUM;
4476 sky2->flow_mode = FC_BOTH;
4480 sky2->advertising = sky2_supported_modes(hw);
4483 spin_lock_init(&sky2->phy_lock);
4485 sky2->tx_pending = TX_DEF_PENDING;
4486 sky2->tx_ring_size = roundup_pow_of_two(TX_DEF_PENDING+1);
4487 sky2->rx_pending = RX_DEF_PENDING;
4489 hw->dev[port] = dev;
4493 dev->features |= NETIF_F_TSO | NETIF_F_IP_CSUM | NETIF_F_SG;
4495 dev->features |= NETIF_F_HIGHDMA;
4497 #ifdef SKY2_VLAN_TAG_USED
4498 /* The workaround for FE+ status conflicts with VLAN tag detection. */
4499 if (!(sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
4500 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0)) {
4501 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
4505 /* read the mac address */
4506 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
4507 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
4512 static void __devinit sky2_show_addr(struct net_device *dev)
4514 const struct sky2_port *sky2 = netdev_priv(dev);
4516 netif_info(sky2, probe, dev, "addr %pM\n", dev->dev_addr);
4519 /* Handle software interrupt used during MSI test */
4520 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
4522 struct sky2_hw *hw = dev_id;
4523 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4528 if (status & Y2_IS_IRQ_SW) {
4529 hw->flags |= SKY2_HW_USE_MSI;
4530 wake_up(&hw->msi_wait);
4531 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4533 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4538 /* Test interrupt path by forcing a a software IRQ */
4539 static int __devinit sky2_test_msi(struct sky2_hw *hw)
4541 struct pci_dev *pdev = hw->pdev;
4544 init_waitqueue_head (&hw->msi_wait);
4546 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4548 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4550 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4554 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4555 sky2_read8(hw, B0_CTST);
4557 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4559 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4560 /* MSI test failed, go back to INTx mode */
4561 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4562 "switching to INTx mode.\n");
4565 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4568 sky2_write32(hw, B0_IMSK, 0);
4569 sky2_read32(hw, B0_IMSK);
4571 free_irq(pdev->irq, hw);
4576 /* This driver supports yukon2 chipset only */
4577 static const char *sky2_name(u8 chipid, char *buf, int sz)
4579 const char *name[] = {
4581 "EC Ultra", /* 0xb4 */
4582 "Extreme", /* 0xb5 */
4586 "Supreme", /* 0xb9 */
4588 "Unknown", /* 0xbb */
4589 "Optima", /* 0xbc */
4592 if (chipid >= CHIP_ID_YUKON_XL && chipid <= CHIP_ID_YUKON_OPT)
4593 strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
4595 snprintf(buf, sz, "(chip %#x)", chipid);
4599 static int __devinit sky2_probe(struct pci_dev *pdev,
4600 const struct pci_device_id *ent)
4602 struct net_device *dev;
4604 int err, using_dac = 0, wol_default;
4608 err = pci_enable_device(pdev);
4610 dev_err(&pdev->dev, "cannot enable PCI device\n");
4614 /* Get configuration information
4615 * Note: only regular PCI config access once to test for HW issues
4616 * other PCI access through shared memory for speed and to
4617 * avoid MMCONFIG problems.
4619 err = pci_read_config_dword(pdev, PCI_DEV_REG2, ®);
4621 dev_err(&pdev->dev, "PCI read config failed\n");
4626 dev_err(&pdev->dev, "PCI configuration read error\n");
4630 err = pci_request_regions(pdev, DRV_NAME);
4632 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4633 goto err_out_disable;
4636 pci_set_master(pdev);
4638 if (sizeof(dma_addr_t) > sizeof(u32) &&
4639 !(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))) {
4641 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4643 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4644 "for consistent allocations\n");
4645 goto err_out_free_regions;
4648 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4650 dev_err(&pdev->dev, "no usable DMA configuration\n");
4651 goto err_out_free_regions;
4657 /* The sk98lin vendor driver uses hardware byte swapping but
4658 * this driver uses software swapping.
4660 reg &= ~PCI_REV_DESC;
4661 err = pci_write_config_dword(pdev,PCI_DEV_REG2, reg);
4663 dev_err(&pdev->dev, "PCI write config failed\n");
4664 goto err_out_free_regions;
4668 wol_default = device_may_wakeup(&pdev->dev) ? WAKE_MAGIC : 0;
4672 hw = kzalloc(sizeof(*hw) + strlen(DRV_NAME "@pci:")
4673 + strlen(pci_name(pdev)) + 1, GFP_KERNEL);
4675 dev_err(&pdev->dev, "cannot allocate hardware struct\n");
4676 goto err_out_free_regions;
4680 sprintf(hw->irq_name, DRV_NAME "@pci:%s", pci_name(pdev));
4682 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
4684 dev_err(&pdev->dev, "cannot map device registers\n");
4685 goto err_out_free_hw;
4688 /* ring for status responses */
4689 hw->st_le = pci_alloc_consistent(pdev, STATUS_LE_BYTES, &hw->st_dma);
4691 goto err_out_iounmap;
4693 err = sky2_init(hw);
4695 goto err_out_iounmap;
4697 dev_info(&pdev->dev, "Yukon-2 %s chip revision %d\n",
4698 sky2_name(hw->chip_id, buf1, sizeof(buf1)), hw->chip_rev);
4702 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
4705 goto err_out_free_pci;
4708 if (!disable_msi && pci_enable_msi(pdev) == 0) {
4709 err = sky2_test_msi(hw);
4710 if (err == -EOPNOTSUPP)
4711 pci_disable_msi(pdev);
4713 goto err_out_free_netdev;
4716 err = register_netdev(dev);
4718 dev_err(&pdev->dev, "cannot register net device\n");
4719 goto err_out_free_netdev;
4722 netif_carrier_off(dev);
4724 netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
4726 err = request_irq(pdev->irq, sky2_intr,
4727 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
4730 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4731 goto err_out_unregister;
4733 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4734 napi_enable(&hw->napi);
4736 sky2_show_addr(dev);
4738 if (hw->ports > 1) {
4739 struct net_device *dev1;
4742 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
4743 if (dev1 && (err = register_netdev(dev1)) == 0)
4744 sky2_show_addr(dev1);
4746 dev_warn(&pdev->dev,
4747 "register of second port failed (%d)\n", err);
4755 setup_timer(&hw->watchdog_timer, sky2_watchdog, (unsigned long) hw);
4756 INIT_WORK(&hw->restart_work, sky2_restart);
4758 pci_set_drvdata(pdev, hw);
4759 pdev->d3_delay = 150;
4764 if (hw->flags & SKY2_HW_USE_MSI)
4765 pci_disable_msi(pdev);
4766 unregister_netdev(dev);
4767 err_out_free_netdev:
4770 sky2_write8(hw, B0_CTST, CS_RST_SET);
4771 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4776 err_out_free_regions:
4777 pci_release_regions(pdev);
4779 pci_disable_device(pdev);
4781 pci_set_drvdata(pdev, NULL);
4785 static void __devexit sky2_remove(struct pci_dev *pdev)
4787 struct sky2_hw *hw = pci_get_drvdata(pdev);
4793 del_timer_sync(&hw->watchdog_timer);
4794 cancel_work_sync(&hw->restart_work);
4796 for (i = hw->ports-1; i >= 0; --i)
4797 unregister_netdev(hw->dev[i]);
4799 sky2_write32(hw, B0_IMSK, 0);
4803 sky2_write8(hw, B0_CTST, CS_RST_SET);
4804 sky2_read8(hw, B0_CTST);
4806 free_irq(pdev->irq, hw);
4807 if (hw->flags & SKY2_HW_USE_MSI)
4808 pci_disable_msi(pdev);
4809 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4810 pci_release_regions(pdev);
4811 pci_disable_device(pdev);
4813 for (i = hw->ports-1; i >= 0; --i)
4814 free_netdev(hw->dev[i]);
4819 pci_set_drvdata(pdev, NULL);
4822 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
4824 struct sky2_hw *hw = pci_get_drvdata(pdev);
4830 del_timer_sync(&hw->watchdog_timer);
4831 cancel_work_sync(&hw->restart_work);
4834 for (i = 0; i < hw->ports; i++) {
4835 struct net_device *dev = hw->dev[i];
4836 struct sky2_port *sky2 = netdev_priv(dev);
4841 sky2_wol_init(sky2);
4846 device_set_wakeup_enable(&pdev->dev, wol != 0);
4848 sky2_write32(hw, B0_IMSK, 0);
4849 napi_disable(&hw->napi);
4853 pci_save_state(pdev);
4854 pci_enable_wake(pdev, pci_choose_state(pdev, state), wol);
4855 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4861 static int sky2_resume(struct pci_dev *pdev)
4863 struct sky2_hw *hw = pci_get_drvdata(pdev);
4870 err = pci_set_power_state(pdev, PCI_D0);
4874 err = pci_restore_state(pdev);
4878 pci_enable_wake(pdev, PCI_D0, 0);
4880 /* Re-enable all clocks */
4881 err = pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
4883 dev_err(&pdev->dev, "PCI write config failed\n");
4888 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4889 napi_enable(&hw->napi);
4891 for (i = 0; i < hw->ports; i++) {
4892 err = sky2_reattach(hw->dev[i]);
4902 dev_err(&pdev->dev, "resume failed (%d)\n", err);
4903 pci_disable_device(pdev);
4908 static void sky2_shutdown(struct pci_dev *pdev)
4910 sky2_suspend(pdev, PMSG_SUSPEND);
4913 static struct pci_driver sky2_driver = {
4915 .id_table = sky2_id_table,
4916 .probe = sky2_probe,
4917 .remove = __devexit_p(sky2_remove),
4919 .suspend = sky2_suspend,
4920 .resume = sky2_resume,
4922 .shutdown = sky2_shutdown,
4925 static int __init sky2_init_module(void)
4927 pr_info("driver version " DRV_VERSION "\n");
4930 return pci_register_driver(&sky2_driver);
4933 static void __exit sky2_cleanup_module(void)
4935 pci_unregister_driver(&sky2_driver);
4936 sky2_debug_cleanup();
4939 module_init(sky2_init_module);
4940 module_exit(sky2_cleanup_module);
4942 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
4943 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
4944 MODULE_LICENSE("GPL");
4945 MODULE_VERSION(DRV_VERSION);