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>
36 #include <linux/slab.h>
38 #include <linux/tcp.h>
40 #include <linux/delay.h>
41 #include <linux/workqueue.h>
42 #include <linux/if_vlan.h>
43 #include <linux/prefetch.h>
44 #include <linux/debugfs.h>
45 #include <linux/mii.h>
49 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
50 #define SKY2_VLAN_TAG_USED 1
55 #define DRV_NAME "sky2"
56 #define DRV_VERSION "1.27"
59 * The Yukon II chipset takes 64 bit command blocks (called list elements)
60 * that are organized into three (receive, transmit, status) different rings
64 #define RX_LE_SIZE 1024
65 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
66 #define RX_MAX_PENDING (RX_LE_SIZE/6 - 2)
67 #define RX_DEF_PENDING RX_MAX_PENDING
69 /* This is the worst case number of transmit list elements for a single skb:
70 VLAN:GSO + CKSUM + Data + skb_frags * DMA */
71 #define MAX_SKB_TX_LE (2 + (sizeof(dma_addr_t)/sizeof(u32))*(MAX_SKB_FRAGS+1))
72 #define TX_MIN_PENDING (MAX_SKB_TX_LE+1)
73 #define TX_MAX_PENDING 4096
74 #define TX_DEF_PENDING 127
76 #define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
77 #define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
78 #define TX_WATCHDOG (5 * HZ)
79 #define NAPI_WEIGHT 64
80 #define PHY_RETRIES 1000
82 #define SKY2_EEPROM_MAGIC 0x9955aabb
85 #define RING_NEXT(x,s) (((x)+1) & ((s)-1))
87 static const u32 default_msg =
88 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
89 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
90 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
92 static int debug = -1; /* defaults above */
93 module_param(debug, int, 0);
94 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
96 static int copybreak __read_mostly = 128;
97 module_param(copybreak, int, 0);
98 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
100 static int disable_msi = 0;
101 module_param(disable_msi, int, 0);
102 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
104 static DEFINE_PCI_DEVICE_TABLE(sky2_id_table) = {
105 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
106 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
107 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E01) }, /* SK-9E21M */
108 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
109 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
110 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
111 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B03) }, /* DGE-550T */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4354) }, /* 88E8040 */
125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4355) }, /* 88E8040T */
126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4356) }, /* 88EC033 */
127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4357) }, /* 88E8042 */
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x435A) }, /* 88E8048 */
129 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) }, /* 88E8052 */
130 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) }, /* 88E8050 */
131 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) }, /* 88E8053 */
132 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) }, /* 88E8055 */
133 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) }, /* 88E8056 */
134 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4365) }, /* 88E8070 */
135 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) }, /* 88EC036 */
136 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) }, /* 88EC032 */
137 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) }, /* 88EC034 */
138 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4369) }, /* 88EC042 */
139 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436A) }, /* 88E8058 */
140 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436B) }, /* 88E8071 */
141 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436C) }, /* 88E8072 */
142 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436D) }, /* 88E8055 */
143 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4370) }, /* 88E8075 */
144 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4380) }, /* 88E8057 */
145 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4381) }, /* 88E8059 */
149 MODULE_DEVICE_TABLE(pci, sky2_id_table);
151 /* Avoid conditionals by using array */
152 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
153 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
154 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
156 static void sky2_set_multicast(struct net_device *dev);
158 /* Access to PHY via serial interconnect */
159 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
163 gma_write16(hw, port, GM_SMI_DATA, val);
164 gma_write16(hw, port, GM_SMI_CTRL,
165 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
167 for (i = 0; i < PHY_RETRIES; i++) {
168 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
172 if (!(ctrl & GM_SMI_CT_BUSY))
178 dev_warn(&hw->pdev->dev,"%s: phy write timeout\n", hw->dev[port]->name);
182 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
186 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
190 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
191 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
193 for (i = 0; i < PHY_RETRIES; i++) {
194 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
198 if (ctrl & GM_SMI_CT_RD_VAL) {
199 *val = gma_read16(hw, port, GM_SMI_DATA);
206 dev_warn(&hw->pdev->dev, "%s: phy read timeout\n", hw->dev[port]->name);
209 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
213 static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
216 __gm_phy_read(hw, port, reg, &v);
221 static void sky2_power_on(struct sky2_hw *hw)
223 /* switch power to VCC (WA for VAUX problem) */
224 sky2_write8(hw, B0_POWER_CTRL,
225 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
227 /* disable Core Clock Division, */
228 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
230 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
231 /* enable bits are inverted */
232 sky2_write8(hw, B2_Y2_CLK_GATE,
233 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
234 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
235 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
237 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
239 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
242 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
244 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
245 /* set all bits to 0 except bits 15..12 and 8 */
246 reg &= P_ASPM_CONTROL_MSK;
247 sky2_pci_write32(hw, PCI_DEV_REG4, reg);
249 reg = sky2_pci_read32(hw, PCI_DEV_REG5);
250 /* set all bits to 0 except bits 28 & 27 */
251 reg &= P_CTL_TIM_VMAIN_AV_MSK;
252 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
254 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
256 sky2_write16(hw, B0_CTST, Y2_HW_WOL_ON);
258 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
259 reg = sky2_read32(hw, B2_GP_IO);
260 reg |= GLB_GPIO_STAT_RACE_DIS;
261 sky2_write32(hw, B2_GP_IO, reg);
263 sky2_read32(hw, B2_GP_IO);
266 /* Turn on "driver loaded" LED */
267 sky2_write16(hw, B0_CTST, Y2_LED_STAT_ON);
270 static void sky2_power_aux(struct sky2_hw *hw)
272 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
273 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
275 /* enable bits are inverted */
276 sky2_write8(hw, B2_Y2_CLK_GATE,
277 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
278 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
279 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
281 /* switch power to VAUX if supported and PME from D3cold */
282 if ( (sky2_read32(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
283 pci_pme_capable(hw->pdev, PCI_D3cold))
284 sky2_write8(hw, B0_POWER_CTRL,
285 (PC_VAUX_ENA | PC_VCC_ENA |
286 PC_VAUX_ON | PC_VCC_OFF));
288 /* turn off "driver loaded LED" */
289 sky2_write16(hw, B0_CTST, Y2_LED_STAT_OFF);
292 static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
296 /* disable all GMAC IRQ's */
297 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
299 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
300 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
301 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
302 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
304 reg = gma_read16(hw, port, GM_RX_CTRL);
305 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
306 gma_write16(hw, port, GM_RX_CTRL, reg);
309 /* flow control to advertise bits */
310 static const u16 copper_fc_adv[] = {
312 [FC_TX] = PHY_M_AN_ASP,
313 [FC_RX] = PHY_M_AN_PC,
314 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
317 /* flow control to advertise bits when using 1000BaseX */
318 static const u16 fiber_fc_adv[] = {
319 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
320 [FC_TX] = PHY_M_P_ASYM_MD_X,
321 [FC_RX] = PHY_M_P_SYM_MD_X,
322 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
325 /* flow control to GMA disable bits */
326 static const u16 gm_fc_disable[] = {
327 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
328 [FC_TX] = GM_GPCR_FC_RX_DIS,
329 [FC_RX] = GM_GPCR_FC_TX_DIS,
334 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
336 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
337 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
339 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
340 !(hw->flags & SKY2_HW_NEWER_PHY)) {
341 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
343 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
345 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
347 /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
348 if (hw->chip_id == CHIP_ID_YUKON_EC)
349 /* set downshift counter to 3x and enable downshift */
350 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
352 /* set master & slave downshift counter to 1x */
353 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
355 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
358 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
359 if (sky2_is_copper(hw)) {
360 if (!(hw->flags & SKY2_HW_GIGABIT)) {
361 /* enable automatic crossover */
362 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
364 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
365 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
368 /* Enable Class A driver for FE+ A0 */
369 spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2);
370 spec |= PHY_M_FESC_SEL_CL_A;
371 gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec);
374 /* disable energy detect */
375 ctrl &= ~PHY_M_PC_EN_DET_MSK;
377 /* enable automatic crossover */
378 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
380 /* downshift on PHY 88E1112 and 88E1149 is changed */
381 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
382 (hw->flags & SKY2_HW_NEWER_PHY)) {
383 /* set downshift counter to 3x and enable downshift */
384 ctrl &= ~PHY_M_PC_DSC_MSK;
385 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
389 /* workaround for deviation #4.88 (CRC errors) */
390 /* disable Automatic Crossover */
392 ctrl &= ~PHY_M_PC_MDIX_MSK;
395 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
397 /* special setup for PHY 88E1112 Fiber */
398 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
399 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
401 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
402 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
403 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
404 ctrl &= ~PHY_M_MAC_MD_MSK;
405 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
406 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
408 if (hw->pmd_type == 'P') {
409 /* select page 1 to access Fiber registers */
410 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
412 /* for SFP-module set SIGDET polarity to low */
413 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
414 ctrl |= PHY_M_FIB_SIGD_POL;
415 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
418 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
426 if (sky2->flags & SKY2_FLAG_AUTO_SPEED) {
427 if (sky2_is_copper(hw)) {
428 if (sky2->advertising & ADVERTISED_1000baseT_Full)
429 ct1000 |= PHY_M_1000C_AFD;
430 if (sky2->advertising & ADVERTISED_1000baseT_Half)
431 ct1000 |= PHY_M_1000C_AHD;
432 if (sky2->advertising & ADVERTISED_100baseT_Full)
433 adv |= PHY_M_AN_100_FD;
434 if (sky2->advertising & ADVERTISED_100baseT_Half)
435 adv |= PHY_M_AN_100_HD;
436 if (sky2->advertising & ADVERTISED_10baseT_Full)
437 adv |= PHY_M_AN_10_FD;
438 if (sky2->advertising & ADVERTISED_10baseT_Half)
439 adv |= PHY_M_AN_10_HD;
441 } else { /* special defines for FIBER (88E1040S only) */
442 if (sky2->advertising & ADVERTISED_1000baseT_Full)
443 adv |= PHY_M_AN_1000X_AFD;
444 if (sky2->advertising & ADVERTISED_1000baseT_Half)
445 adv |= PHY_M_AN_1000X_AHD;
448 /* Restart Auto-negotiation */
449 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
451 /* forced speed/duplex settings */
452 ct1000 = PHY_M_1000C_MSE;
454 /* Disable auto update for duplex flow control and duplex */
455 reg |= GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_SPD_DIS;
457 switch (sky2->speed) {
459 ctrl |= PHY_CT_SP1000;
460 reg |= GM_GPCR_SPEED_1000;
463 ctrl |= PHY_CT_SP100;
464 reg |= GM_GPCR_SPEED_100;
468 if (sky2->duplex == DUPLEX_FULL) {
469 reg |= GM_GPCR_DUP_FULL;
470 ctrl |= PHY_CT_DUP_MD;
471 } else if (sky2->speed < SPEED_1000)
472 sky2->flow_mode = FC_NONE;
475 if (sky2->flags & SKY2_FLAG_AUTO_PAUSE) {
476 if (sky2_is_copper(hw))
477 adv |= copper_fc_adv[sky2->flow_mode];
479 adv |= fiber_fc_adv[sky2->flow_mode];
481 reg |= GM_GPCR_AU_FCT_DIS;
482 reg |= gm_fc_disable[sky2->flow_mode];
484 /* Forward pause packets to GMAC? */
485 if (sky2->flow_mode & FC_RX)
486 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
488 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
491 gma_write16(hw, port, GM_GP_CTRL, reg);
493 if (hw->flags & SKY2_HW_GIGABIT)
494 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
496 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
497 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
499 /* Setup Phy LED's */
500 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
503 switch (hw->chip_id) {
504 case CHIP_ID_YUKON_FE:
505 /* on 88E3082 these bits are at 11..9 (shifted left) */
506 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
508 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
510 /* delete ACT LED control bits */
511 ctrl &= ~PHY_M_FELP_LED1_MSK;
512 /* change ACT LED control to blink mode */
513 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
514 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
517 case CHIP_ID_YUKON_FE_P:
518 /* Enable Link Partner Next Page */
519 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
520 ctrl |= PHY_M_PC_ENA_LIP_NP;
522 /* disable Energy Detect and enable scrambler */
523 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
524 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
526 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
527 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
528 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
529 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
531 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
534 case CHIP_ID_YUKON_XL:
535 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
537 /* select page 3 to access LED control register */
538 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
540 /* set LED Function Control register */
541 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
542 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
543 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
544 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
545 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
547 /* set Polarity Control register */
548 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
549 (PHY_M_POLC_LS1_P_MIX(4) |
550 PHY_M_POLC_IS0_P_MIX(4) |
551 PHY_M_POLC_LOS_CTRL(2) |
552 PHY_M_POLC_INIT_CTRL(2) |
553 PHY_M_POLC_STA1_CTRL(2) |
554 PHY_M_POLC_STA0_CTRL(2)));
556 /* restore page register */
557 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
560 case CHIP_ID_YUKON_EC_U:
561 case CHIP_ID_YUKON_EX:
562 case CHIP_ID_YUKON_SUPR:
563 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
565 /* select page 3 to access LED control register */
566 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
568 /* set LED Function Control register */
569 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
570 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
571 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
572 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
573 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
575 /* set Blink Rate in LED Timer Control Register */
576 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
577 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
578 /* restore page register */
579 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
583 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
584 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
586 /* turn off the Rx LED (LED_RX) */
587 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
590 if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_UL_2) {
591 /* apply fixes in PHY AFE */
592 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
594 /* increase differential signal amplitude in 10BASE-T */
595 gm_phy_write(hw, port, 0x18, 0xaa99);
596 gm_phy_write(hw, port, 0x17, 0x2011);
598 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
599 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
600 gm_phy_write(hw, port, 0x18, 0xa204);
601 gm_phy_write(hw, port, 0x17, 0x2002);
604 /* set page register to 0 */
605 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
606 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
607 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
608 /* apply workaround for integrated resistors calibration */
609 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
610 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
611 } else if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
612 /* apply fixes in PHY AFE */
613 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00ff);
615 /* apply RDAC termination workaround */
616 gm_phy_write(hw, port, 24, 0x2800);
617 gm_phy_write(hw, port, 23, 0x2001);
619 /* set page register back to 0 */
620 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
621 } else if (hw->chip_id != CHIP_ID_YUKON_EX &&
622 hw->chip_id < CHIP_ID_YUKON_SUPR) {
623 /* no effect on Yukon-XL */
624 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
626 if (!(sky2->flags & SKY2_FLAG_AUTO_SPEED) ||
627 sky2->speed == SPEED_100) {
628 /* turn on 100 Mbps LED (LED_LINK100) */
629 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
633 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
637 /* Enable phy interrupt on auto-negotiation complete (or link up) */
638 if (sky2->flags & SKY2_FLAG_AUTO_SPEED)
639 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
641 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
644 static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
645 static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
647 static void sky2_phy_power_up(struct sky2_hw *hw, unsigned port)
651 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
652 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
653 reg1 &= ~phy_power[port];
655 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
656 reg1 |= coma_mode[port];
658 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
659 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
660 sky2_pci_read32(hw, PCI_DEV_REG1);
662 if (hw->chip_id == CHIP_ID_YUKON_FE)
663 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_ANE);
664 else if (hw->flags & SKY2_HW_ADV_POWER_CTL)
665 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
668 static void sky2_phy_power_down(struct sky2_hw *hw, unsigned port)
673 /* release GPHY Control reset */
674 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
676 /* release GMAC reset */
677 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
679 if (hw->flags & SKY2_HW_NEWER_PHY) {
680 /* select page 2 to access MAC control register */
681 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
683 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
684 /* allow GMII Power Down */
685 ctrl &= ~PHY_M_MAC_GMIF_PUP;
686 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
688 /* set page register back to 0 */
689 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
692 /* setup General Purpose Control Register */
693 gma_write16(hw, port, GM_GP_CTRL,
694 GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 |
695 GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_FCT_DIS |
698 if (hw->chip_id != CHIP_ID_YUKON_EC) {
699 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
700 /* select page 2 to access MAC control register */
701 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
703 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
704 /* enable Power Down */
705 ctrl |= PHY_M_PC_POW_D_ENA;
706 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
708 /* set page register back to 0 */
709 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
712 /* set IEEE compatible Power Down Mode (dev. #4.99) */
713 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_PDOWN);
716 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
717 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
718 reg1 |= phy_power[port]; /* set PHY to PowerDown/COMA Mode */
719 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
720 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
723 /* Force a renegotiation */
724 static void sky2_phy_reinit(struct sky2_port *sky2)
726 spin_lock_bh(&sky2->phy_lock);
727 sky2_phy_init(sky2->hw, sky2->port);
728 spin_unlock_bh(&sky2->phy_lock);
731 /* Put device in state to listen for Wake On Lan */
732 static void sky2_wol_init(struct sky2_port *sky2)
734 struct sky2_hw *hw = sky2->hw;
735 unsigned port = sky2->port;
736 enum flow_control save_mode;
739 /* Bring hardware out of reset */
740 sky2_write16(hw, B0_CTST, CS_RST_CLR);
741 sky2_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
743 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
744 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
747 * sky2_reset will re-enable on resume
749 save_mode = sky2->flow_mode;
750 ctrl = sky2->advertising;
752 sky2->advertising &= ~(ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full);
753 sky2->flow_mode = FC_NONE;
755 spin_lock_bh(&sky2->phy_lock);
756 sky2_phy_power_up(hw, port);
757 sky2_phy_init(hw, port);
758 spin_unlock_bh(&sky2->phy_lock);
760 sky2->flow_mode = save_mode;
761 sky2->advertising = ctrl;
763 /* Set GMAC to no flow control and auto update for speed/duplex */
764 gma_write16(hw, port, GM_GP_CTRL,
765 GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
766 GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
768 /* Set WOL address */
769 memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
770 sky2->netdev->dev_addr, ETH_ALEN);
772 /* Turn on appropriate WOL control bits */
773 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
775 if (sky2->wol & WAKE_PHY)
776 ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
778 ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
780 if (sky2->wol & WAKE_MAGIC)
781 ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
783 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;
785 ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
786 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
788 /* Disable PiG firmware */
789 sky2_write16(hw, B0_CTST, Y2_HW_WOL_OFF);
792 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
795 static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
797 struct net_device *dev = hw->dev[port];
799 if ( (hw->chip_id == CHIP_ID_YUKON_EX &&
800 hw->chip_rev != CHIP_REV_YU_EX_A0) ||
801 hw->chip_id >= CHIP_ID_YUKON_FE_P) {
802 /* Yukon-Extreme B0 and further Extreme devices */
803 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
804 } else if (dev->mtu > ETH_DATA_LEN) {
805 /* set Tx GMAC FIFO Almost Empty Threshold */
806 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
807 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
809 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
811 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
814 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
816 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
820 const u8 *addr = hw->dev[port]->dev_addr;
822 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
823 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
825 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
827 if (hw->chip_id == CHIP_ID_YUKON_XL &&
828 hw->chip_rev == CHIP_REV_YU_XL_A0 &&
830 /* WA DEV_472 -- looks like crossed wires on port 2 */
831 /* clear GMAC 1 Control reset */
832 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
834 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
835 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
836 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
837 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
838 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
841 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
843 /* Enable Transmit FIFO Underrun */
844 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
846 spin_lock_bh(&sky2->phy_lock);
847 sky2_phy_power_up(hw, port);
848 sky2_phy_init(hw, port);
849 spin_unlock_bh(&sky2->phy_lock);
852 reg = gma_read16(hw, port, GM_PHY_ADDR);
853 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
855 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
856 gma_read16(hw, port, i);
857 gma_write16(hw, port, GM_PHY_ADDR, reg);
859 /* transmit control */
860 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
862 /* receive control reg: unicast + multicast + no FCS */
863 gma_write16(hw, port, GM_RX_CTRL,
864 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
866 /* transmit flow control */
867 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
869 /* transmit parameter */
870 gma_write16(hw, port, GM_TX_PARAM,
871 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
872 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
873 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
874 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
876 /* serial mode register */
877 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
878 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
880 if (hw->dev[port]->mtu > ETH_DATA_LEN)
881 reg |= GM_SMOD_JUMBO_ENA;
883 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
884 hw->chip_rev == CHIP_REV_YU_EC_U_B1)
885 reg |= GM_NEW_FLOW_CTRL;
887 gma_write16(hw, port, GM_SERIAL_MODE, reg);
889 /* virtual address for data */
890 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
892 /* physical address: used for pause frames */
893 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
895 /* ignore counter overflows */
896 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
897 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
898 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
900 /* Configure Rx MAC FIFO */
901 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
902 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
903 if (hw->chip_id == CHIP_ID_YUKON_EX ||
904 hw->chip_id == CHIP_ID_YUKON_FE_P)
905 rx_reg |= GMF_RX_OVER_ON;
907 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
909 if (hw->chip_id == CHIP_ID_YUKON_XL) {
910 /* Hardware errata - clear flush mask */
911 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0);
913 /* Flush Rx MAC FIFO on any flow control or error */
914 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
917 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
918 reg = RX_GMF_FL_THR_DEF + 1;
919 /* Another magic mystery workaround from sk98lin */
920 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
921 hw->chip_rev == CHIP_REV_YU_FE2_A0)
923 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
925 /* Configure Tx MAC FIFO */
926 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
927 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
929 /* On chips without ram buffer, pause is controled by MAC level */
930 if (!(hw->flags & SKY2_HW_RAM_BUFFER)) {
931 /* Pause threshold is scaled by 8 in bytes */
932 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
933 hw->chip_rev == CHIP_REV_YU_FE2_A0)
937 sky2_write16(hw, SK_REG(port, RX_GMF_UP_THR), reg);
938 sky2_write16(hw, SK_REG(port, RX_GMF_LP_THR), 768 / 8);
940 sky2_set_tx_stfwd(hw, port);
943 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
944 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
945 /* disable dynamic watermark */
946 reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA));
947 reg &= ~TX_DYN_WM_ENA;
948 sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg);
952 /* Assign Ram Buffer allocation to queue */
953 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
957 /* convert from K bytes to qwords used for hw register */
960 end = start + space - 1;
962 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
963 sky2_write32(hw, RB_ADDR(q, RB_START), start);
964 sky2_write32(hw, RB_ADDR(q, RB_END), end);
965 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
966 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
968 if (q == Q_R1 || q == Q_R2) {
969 u32 tp = space - space/4;
971 /* On receive queue's set the thresholds
972 * give receiver priority when > 3/4 full
973 * send pause when down to 2K
975 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
976 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
979 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
980 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
982 /* Enable store & forward on Tx queue's because
983 * Tx FIFO is only 1K on Yukon
985 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
988 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
989 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
992 /* Setup Bus Memory Interface */
993 static void sky2_qset(struct sky2_hw *hw, u16 q)
995 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
996 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
997 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
998 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
1001 /* Setup prefetch unit registers. This is the interface between
1002 * hardware and driver list elements
1004 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
1005 dma_addr_t addr, u32 last)
1007 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1008 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
1009 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), upper_32_bits(addr));
1010 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), lower_32_bits(addr));
1011 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
1012 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
1014 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
1017 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2, u16 *slot)
1019 struct sky2_tx_le *le = sky2->tx_le + *slot;
1021 *slot = RING_NEXT(*slot, sky2->tx_ring_size);
1026 static void tx_init(struct sky2_port *sky2)
1028 struct sky2_tx_le *le;
1030 sky2->tx_prod = sky2->tx_cons = 0;
1031 sky2->tx_tcpsum = 0;
1032 sky2->tx_last_mss = 0;
1034 le = get_tx_le(sky2, &sky2->tx_prod);
1036 le->opcode = OP_ADDR64 | HW_OWNER;
1037 sky2->tx_last_upper = 0;
1040 /* Update chip's next pointer */
1041 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
1043 /* Make sure write' to descriptors are complete before we tell hardware */
1045 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
1047 /* Synchronize I/O on since next processor may write to tail */
1052 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
1054 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
1055 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
1060 static unsigned sky2_get_rx_threshold(struct sky2_port* sky2)
1064 /* Space needed for frame data + headers rounded up */
1065 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1067 /* Stopping point for hardware truncation */
1068 return (size - 8) / sizeof(u32);
1071 static unsigned sky2_get_rx_data_size(struct sky2_port* sky2)
1073 struct rx_ring_info *re;
1076 /* Space needed for frame data + headers rounded up */
1077 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1079 sky2->rx_nfrags = size >> PAGE_SHIFT;
1080 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1082 /* Compute residue after pages */
1083 size -= sky2->rx_nfrags << PAGE_SHIFT;
1085 /* Optimize to handle small packets and headers */
1086 if (size < copybreak)
1088 if (size < ETH_HLEN)
1094 /* Build description to hardware for one receive segment */
1095 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
1096 dma_addr_t map, unsigned len)
1098 struct sky2_rx_le *le;
1100 if (sizeof(dma_addr_t) > sizeof(u32)) {
1101 le = sky2_next_rx(sky2);
1102 le->addr = cpu_to_le32(upper_32_bits(map));
1103 le->opcode = OP_ADDR64 | HW_OWNER;
1106 le = sky2_next_rx(sky2);
1107 le->addr = cpu_to_le32(lower_32_bits(map));
1108 le->length = cpu_to_le16(len);
1109 le->opcode = op | HW_OWNER;
1112 /* Build description to hardware for one possibly fragmented skb */
1113 static void sky2_rx_submit(struct sky2_port *sky2,
1114 const struct rx_ring_info *re)
1118 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
1120 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
1121 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
1125 static int sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
1128 struct sk_buff *skb = re->skb;
1131 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
1132 if (pci_dma_mapping_error(pdev, re->data_addr))
1135 pci_unmap_len_set(re, data_size, size);
1137 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1138 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1140 re->frag_addr[i] = pci_map_page(pdev, frag->page,
1143 PCI_DMA_FROMDEVICE);
1145 if (pci_dma_mapping_error(pdev, re->frag_addr[i]))
1146 goto map_page_error;
1152 pci_unmap_page(pdev, re->frag_addr[i],
1153 skb_shinfo(skb)->frags[i].size,
1154 PCI_DMA_FROMDEVICE);
1157 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
1158 PCI_DMA_FROMDEVICE);
1161 if (net_ratelimit())
1162 dev_warn(&pdev->dev, "%s: rx mapping error\n",
1167 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1169 struct sk_buff *skb = re->skb;
1172 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
1173 PCI_DMA_FROMDEVICE);
1175 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1176 pci_unmap_page(pdev, re->frag_addr[i],
1177 skb_shinfo(skb)->frags[i].size,
1178 PCI_DMA_FROMDEVICE);
1181 /* Tell chip where to start receive checksum.
1182 * Actually has two checksums, but set both same to avoid possible byte
1185 static void rx_set_checksum(struct sky2_port *sky2)
1187 struct sky2_rx_le *le = sky2_next_rx(sky2);
1189 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1191 le->opcode = OP_TCPSTART | HW_OWNER;
1193 sky2_write32(sky2->hw,
1194 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1195 (sky2->flags & SKY2_FLAG_RX_CHECKSUM)
1196 ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
1200 * The RX Stop command will not work for Yukon-2 if the BMU does not
1201 * reach the end of packet and since we can't make sure that we have
1202 * incoming data, we must reset the BMU while it is not doing a DMA
1203 * transfer. Since it is possible that the RX path is still active,
1204 * the RX RAM buffer will be stopped first, so any possible incoming
1205 * data will not trigger a DMA. After the RAM buffer is stopped, the
1206 * BMU is polled until any DMA in progress is ended and only then it
1209 static void sky2_rx_stop(struct sky2_port *sky2)
1211 struct sky2_hw *hw = sky2->hw;
1212 unsigned rxq = rxqaddr[sky2->port];
1215 /* disable the RAM Buffer receive queue */
1216 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1218 for (i = 0; i < 0xffff; i++)
1219 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1220 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1223 netdev_warn(sky2->netdev, "receiver stop failed\n");
1225 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1227 /* reset the Rx prefetch unit */
1228 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1232 /* Clean out receive buffer area, assumes receiver hardware stopped */
1233 static void sky2_rx_clean(struct sky2_port *sky2)
1237 memset(sky2->rx_le, 0, RX_LE_BYTES);
1238 for (i = 0; i < sky2->rx_pending; i++) {
1239 struct rx_ring_info *re = sky2->rx_ring + i;
1242 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1249 /* Basic MII support */
1250 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1252 struct mii_ioctl_data *data = if_mii(ifr);
1253 struct sky2_port *sky2 = netdev_priv(dev);
1254 struct sky2_hw *hw = sky2->hw;
1255 int err = -EOPNOTSUPP;
1257 if (!netif_running(dev))
1258 return -ENODEV; /* Phy still in reset */
1262 data->phy_id = PHY_ADDR_MARV;
1268 spin_lock_bh(&sky2->phy_lock);
1269 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1270 spin_unlock_bh(&sky2->phy_lock);
1272 data->val_out = val;
1277 spin_lock_bh(&sky2->phy_lock);
1278 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1280 spin_unlock_bh(&sky2->phy_lock);
1286 #ifdef SKY2_VLAN_TAG_USED
1287 static void sky2_set_vlan_mode(struct sky2_hw *hw, u16 port, bool onoff)
1290 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1292 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1295 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1297 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1302 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
1304 struct sky2_port *sky2 = netdev_priv(dev);
1305 struct sky2_hw *hw = sky2->hw;
1306 u16 port = sky2->port;
1308 netif_tx_lock_bh(dev);
1309 napi_disable(&hw->napi);
1312 sky2_set_vlan_mode(hw, port, grp != NULL);
1314 sky2_read32(hw, B0_Y2_SP_LISR);
1315 napi_enable(&hw->napi);
1316 netif_tx_unlock_bh(dev);
1320 /* Amount of required worst case padding in rx buffer */
1321 static inline unsigned sky2_rx_pad(const struct sky2_hw *hw)
1323 return (hw->flags & SKY2_HW_RAM_BUFFER) ? 8 : 2;
1327 * Allocate an skb for receiving. If the MTU is large enough
1328 * make the skb non-linear with a fragment list of pages.
1330 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2)
1332 struct sk_buff *skb;
1335 skb = netdev_alloc_skb(sky2->netdev,
1336 sky2->rx_data_size + sky2_rx_pad(sky2->hw));
1340 if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) {
1341 unsigned char *start;
1343 * Workaround for a bug in FIFO that cause hang
1344 * if the FIFO if the receive buffer is not 64 byte aligned.
1345 * The buffer returned from netdev_alloc_skb is
1346 * aligned except if slab debugging is enabled.
1348 start = PTR_ALIGN(skb->data, 8);
1349 skb_reserve(skb, start - skb->data);
1351 skb_reserve(skb, NET_IP_ALIGN);
1353 for (i = 0; i < sky2->rx_nfrags; i++) {
1354 struct page *page = alloc_page(GFP_ATOMIC);
1358 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1368 static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1370 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1373 static int sky2_alloc_rx_skbs(struct sky2_port *sky2)
1375 struct sky2_hw *hw = sky2->hw;
1378 sky2->rx_data_size = sky2_get_rx_data_size(sky2);
1381 for (i = 0; i < sky2->rx_pending; i++) {
1382 struct rx_ring_info *re = sky2->rx_ring + i;
1384 re->skb = sky2_rx_alloc(sky2);
1388 if (sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size)) {
1389 dev_kfree_skb(re->skb);
1398 * Setup receiver buffer pool.
1399 * Normal case this ends up creating one list element for skb
1400 * in the receive ring. Worst case if using large MTU and each
1401 * allocation falls on a different 64 bit region, that results
1402 * in 6 list elements per ring entry.
1403 * One element is used for checksum enable/disable, and one
1404 * extra to avoid wrap.
1406 static void sky2_rx_start(struct sky2_port *sky2)
1408 struct sky2_hw *hw = sky2->hw;
1409 struct rx_ring_info *re;
1410 unsigned rxq = rxqaddr[sky2->port];
1413 sky2->rx_put = sky2->rx_next = 0;
1416 /* On PCI express lowering the watermark gives better performance */
1417 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
1418 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1420 /* These chips have no ram buffer?
1421 * MAC Rx RAM Read is controlled by hardware */
1422 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1423 hw->chip_rev > CHIP_REV_YU_EC_U_A0)
1424 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1426 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1428 if (!(hw->flags & SKY2_HW_NEW_LE))
1429 rx_set_checksum(sky2);
1431 /* submit Rx ring */
1432 for (i = 0; i < sky2->rx_pending; i++) {
1433 re = sky2->rx_ring + i;
1434 sky2_rx_submit(sky2, re);
1438 * The receiver hangs if it receives frames larger than the
1439 * packet buffer. As a workaround, truncate oversize frames, but
1440 * the register is limited to 9 bits, so if you do frames > 2052
1441 * you better get the MTU right!
1443 thresh = sky2_get_rx_threshold(sky2);
1445 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1447 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1448 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1451 /* Tell chip about available buffers */
1452 sky2_rx_update(sky2, rxq);
1454 if (hw->chip_id == CHIP_ID_YUKON_EX ||
1455 hw->chip_id == CHIP_ID_YUKON_SUPR) {
1457 * Disable flushing of non ASF packets;
1458 * must be done after initializing the BMUs;
1459 * drivers without ASF support should do this too, otherwise
1460 * it may happen that they cannot run on ASF devices;
1461 * remember that the MAC FIFO isn't reset during initialization.
1463 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_MACSEC_FLUSH_OFF);
1466 if (hw->chip_id >= CHIP_ID_YUKON_SUPR) {
1467 /* Enable RX Home Address & Routing Header checksum fix */
1468 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_FL_CTRL),
1469 RX_IPV6_SA_MOB_ENA | RX_IPV6_DA_MOB_ENA);
1471 /* Enable TX Home Address & Routing Header checksum fix */
1472 sky2_write32(hw, Q_ADDR(txqaddr[sky2->port], Q_TEST),
1473 TBMU_TEST_HOME_ADD_FIX_EN | TBMU_TEST_ROUTING_ADD_FIX_EN);
1477 static int sky2_alloc_buffers(struct sky2_port *sky2)
1479 struct sky2_hw *hw = sky2->hw;
1481 /* must be power of 2 */
1482 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1483 sky2->tx_ring_size *
1484 sizeof(struct sky2_tx_le),
1489 sky2->tx_ring = kcalloc(sky2->tx_ring_size, sizeof(struct tx_ring_info),
1494 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1498 memset(sky2->rx_le, 0, RX_LE_BYTES);
1500 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1505 return sky2_alloc_rx_skbs(sky2);
1510 static void sky2_free_buffers(struct sky2_port *sky2)
1512 struct sky2_hw *hw = sky2->hw;
1514 sky2_rx_clean(sky2);
1517 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1518 sky2->rx_le, sky2->rx_le_map);
1522 pci_free_consistent(hw->pdev,
1523 sky2->tx_ring_size * sizeof(struct sky2_tx_le),
1524 sky2->tx_le, sky2->tx_le_map);
1527 kfree(sky2->tx_ring);
1528 kfree(sky2->rx_ring);
1530 sky2->tx_ring = NULL;
1531 sky2->rx_ring = NULL;
1534 static void sky2_hw_up(struct sky2_port *sky2)
1536 struct sky2_hw *hw = sky2->hw;
1537 unsigned port = sky2->port;
1540 struct net_device *otherdev = hw->dev[sky2->port^1];
1545 * On dual port PCI-X card, there is an problem where status
1546 * can be received out of order due to split transactions
1548 if (otherdev && netif_running(otherdev) &&
1549 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1552 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1553 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1554 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1557 sky2_mac_init(hw, port);
1559 /* Register is number of 4K blocks on internal RAM buffer. */
1560 ramsize = sky2_read8(hw, B2_E_0) * 4;
1564 netdev_dbg(sky2->netdev, "ram buffer %dK\n", ramsize);
1566 rxspace = ramsize / 2;
1568 rxspace = 8 + (2*(ramsize - 16))/3;
1570 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1571 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1573 /* Make sure SyncQ is disabled */
1574 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1578 sky2_qset(hw, txqaddr[port]);
1580 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1581 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1582 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1584 /* Set almost empty threshold */
1585 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1586 hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1587 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1589 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1590 sky2->tx_ring_size - 1);
1592 #ifdef SKY2_VLAN_TAG_USED
1593 sky2_set_vlan_mode(hw, port, sky2->vlgrp != NULL);
1596 sky2_rx_start(sky2);
1599 /* Bring up network interface. */
1600 static int sky2_up(struct net_device *dev)
1602 struct sky2_port *sky2 = netdev_priv(dev);
1603 struct sky2_hw *hw = sky2->hw;
1604 unsigned port = sky2->port;
1608 netif_carrier_off(dev);
1610 err = sky2_alloc_buffers(sky2);
1616 /* Enable interrupts from phy/mac for port */
1617 imask = sky2_read32(hw, B0_IMSK);
1618 imask |= portirq_msk[port];
1619 sky2_write32(hw, B0_IMSK, imask);
1620 sky2_read32(hw, B0_IMSK);
1622 netif_info(sky2, ifup, dev, "enabling interface\n");
1627 sky2_free_buffers(sky2);
1631 /* Modular subtraction in ring */
1632 static inline int tx_inuse(const struct sky2_port *sky2)
1634 return (sky2->tx_prod - sky2->tx_cons) & (sky2->tx_ring_size - 1);
1637 /* Number of list elements available for next tx */
1638 static inline int tx_avail(const struct sky2_port *sky2)
1640 return sky2->tx_pending - tx_inuse(sky2);
1643 /* Estimate of number of transmit list elements required */
1644 static unsigned tx_le_req(const struct sk_buff *skb)
1648 count = (skb_shinfo(skb)->nr_frags + 1)
1649 * (sizeof(dma_addr_t) / sizeof(u32));
1651 if (skb_is_gso(skb))
1653 else if (sizeof(dma_addr_t) == sizeof(u32))
1654 ++count; /* possible vlan */
1656 if (skb->ip_summed == CHECKSUM_PARTIAL)
1662 static void sky2_tx_unmap(struct pci_dev *pdev, struct tx_ring_info *re)
1664 if (re->flags & TX_MAP_SINGLE)
1665 pci_unmap_single(pdev, pci_unmap_addr(re, mapaddr),
1666 pci_unmap_len(re, maplen),
1668 else if (re->flags & TX_MAP_PAGE)
1669 pci_unmap_page(pdev, pci_unmap_addr(re, mapaddr),
1670 pci_unmap_len(re, maplen),
1676 * Put one packet in ring for transmit.
1677 * A single packet can generate multiple list elements, and
1678 * the number of ring elements will probably be less than the number
1679 * of list elements used.
1681 static netdev_tx_t sky2_xmit_frame(struct sk_buff *skb,
1682 struct net_device *dev)
1684 struct sky2_port *sky2 = netdev_priv(dev);
1685 struct sky2_hw *hw = sky2->hw;
1686 struct sky2_tx_le *le = NULL;
1687 struct tx_ring_info *re;
1695 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1696 return NETDEV_TX_BUSY;
1698 len = skb_headlen(skb);
1699 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1701 if (pci_dma_mapping_error(hw->pdev, mapping))
1704 slot = sky2->tx_prod;
1705 netif_printk(sky2, tx_queued, KERN_DEBUG, dev,
1706 "tx queued, slot %u, len %d\n", slot, skb->len);
1708 /* Send high bits if needed */
1709 upper = upper_32_bits(mapping);
1710 if (upper != sky2->tx_last_upper) {
1711 le = get_tx_le(sky2, &slot);
1712 le->addr = cpu_to_le32(upper);
1713 sky2->tx_last_upper = upper;
1714 le->opcode = OP_ADDR64 | HW_OWNER;
1717 /* Check for TCP Segmentation Offload */
1718 mss = skb_shinfo(skb)->gso_size;
1721 if (!(hw->flags & SKY2_HW_NEW_LE))
1722 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1724 if (mss != sky2->tx_last_mss) {
1725 le = get_tx_le(sky2, &slot);
1726 le->addr = cpu_to_le32(mss);
1728 if (hw->flags & SKY2_HW_NEW_LE)
1729 le->opcode = OP_MSS | HW_OWNER;
1731 le->opcode = OP_LRGLEN | HW_OWNER;
1732 sky2->tx_last_mss = mss;
1737 #ifdef SKY2_VLAN_TAG_USED
1738 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1739 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1741 le = get_tx_le(sky2, &slot);
1743 le->opcode = OP_VLAN|HW_OWNER;
1745 le->opcode |= OP_VLAN;
1746 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1751 /* Handle TCP checksum offload */
1752 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1753 /* On Yukon EX (some versions) encoding change. */
1754 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1755 ctrl |= CALSUM; /* auto checksum */
1757 const unsigned offset = skb_transport_offset(skb);
1760 tcpsum = offset << 16; /* sum start */
1761 tcpsum |= offset + skb->csum_offset; /* sum write */
1763 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1764 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1767 if (tcpsum != sky2->tx_tcpsum) {
1768 sky2->tx_tcpsum = tcpsum;
1770 le = get_tx_le(sky2, &slot);
1771 le->addr = cpu_to_le32(tcpsum);
1772 le->length = 0; /* initial checksum value */
1773 le->ctrl = 1; /* one packet */
1774 le->opcode = OP_TCPLISW | HW_OWNER;
1779 re = sky2->tx_ring + slot;
1780 re->flags = TX_MAP_SINGLE;
1781 pci_unmap_addr_set(re, mapaddr, mapping);
1782 pci_unmap_len_set(re, maplen, len);
1784 le = get_tx_le(sky2, &slot);
1785 le->addr = cpu_to_le32(lower_32_bits(mapping));
1786 le->length = cpu_to_le16(len);
1788 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1791 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1792 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1794 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1795 frag->size, PCI_DMA_TODEVICE);
1797 if (pci_dma_mapping_error(hw->pdev, mapping))
1798 goto mapping_unwind;
1800 upper = upper_32_bits(mapping);
1801 if (upper != sky2->tx_last_upper) {
1802 le = get_tx_le(sky2, &slot);
1803 le->addr = cpu_to_le32(upper);
1804 sky2->tx_last_upper = upper;
1805 le->opcode = OP_ADDR64 | HW_OWNER;
1808 re = sky2->tx_ring + slot;
1809 re->flags = TX_MAP_PAGE;
1810 pci_unmap_addr_set(re, mapaddr, mapping);
1811 pci_unmap_len_set(re, maplen, frag->size);
1813 le = get_tx_le(sky2, &slot);
1814 le->addr = cpu_to_le32(lower_32_bits(mapping));
1815 le->length = cpu_to_le16(frag->size);
1817 le->opcode = OP_BUFFER | HW_OWNER;
1823 sky2->tx_prod = slot;
1825 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1826 netif_stop_queue(dev);
1828 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1830 return NETDEV_TX_OK;
1833 for (i = sky2->tx_prod; i != slot; i = RING_NEXT(i, sky2->tx_ring_size)) {
1834 re = sky2->tx_ring + i;
1836 sky2_tx_unmap(hw->pdev, re);
1840 if (net_ratelimit())
1841 dev_warn(&hw->pdev->dev, "%s: tx mapping error\n", dev->name);
1843 return NETDEV_TX_OK;
1847 * Free ring elements from starting at tx_cons until "done"
1850 * 1. The hardware will tell us about partial completion of multi-part
1851 * buffers so make sure not to free skb to early.
1852 * 2. This may run in parallel start_xmit because the it only
1853 * looks at the tail of the queue of FIFO (tx_cons), not
1854 * the head (tx_prod)
1856 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1858 struct net_device *dev = sky2->netdev;
1861 BUG_ON(done >= sky2->tx_ring_size);
1863 for (idx = sky2->tx_cons; idx != done;
1864 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
1865 struct tx_ring_info *re = sky2->tx_ring + idx;
1866 struct sk_buff *skb = re->skb;
1868 sky2_tx_unmap(sky2->hw->pdev, re);
1871 netif_printk(sky2, tx_done, KERN_DEBUG, dev,
1872 "tx done %u\n", idx);
1874 dev->stats.tx_packets++;
1875 dev->stats.tx_bytes += skb->len;
1878 dev_kfree_skb_any(skb);
1880 sky2->tx_next = RING_NEXT(idx, sky2->tx_ring_size);
1884 sky2->tx_cons = idx;
1888 static void sky2_tx_reset(struct sky2_hw *hw, unsigned port)
1890 /* Disable Force Sync bit and Enable Alloc bit */
1891 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1892 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1894 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1895 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1896 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1898 /* Reset the PCI FIFO of the async Tx queue */
1899 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1900 BMU_RST_SET | BMU_FIFO_RST);
1902 /* Reset the Tx prefetch units */
1903 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1906 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1907 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1910 static void sky2_hw_down(struct sky2_port *sky2)
1912 struct sky2_hw *hw = sky2->hw;
1913 unsigned port = sky2->port;
1916 /* Force flow control off */
1917 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1919 /* Stop transmitter */
1920 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1921 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1923 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1924 RB_RST_SET | RB_DIS_OP_MD);
1926 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1927 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1928 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1930 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1932 /* Workaround shared GMAC reset */
1933 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 &&
1934 port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1935 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1937 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1939 /* Force any delayed status interrrupt and NAPI */
1940 sky2_write32(hw, STAT_LEV_TIMER_CNT, 0);
1941 sky2_write32(hw, STAT_TX_TIMER_CNT, 0);
1942 sky2_write32(hw, STAT_ISR_TIMER_CNT, 0);
1943 sky2_read8(hw, STAT_ISR_TIMER_CTRL);
1947 spin_lock_bh(&sky2->phy_lock);
1948 sky2_phy_power_down(hw, port);
1949 spin_unlock_bh(&sky2->phy_lock);
1951 sky2_tx_reset(hw, port);
1953 /* Free any pending frames stuck in HW queue */
1954 sky2_tx_complete(sky2, sky2->tx_prod);
1957 /* Network shutdown */
1958 static int sky2_down(struct net_device *dev)
1960 struct sky2_port *sky2 = netdev_priv(dev);
1961 struct sky2_hw *hw = sky2->hw;
1963 /* Never really got started! */
1967 netif_info(sky2, ifdown, dev, "disabling interface\n");
1969 /* Disable port IRQ */
1970 sky2_write32(hw, B0_IMSK,
1971 sky2_read32(hw, B0_IMSK) & ~portirq_msk[sky2->port]);
1972 sky2_read32(hw, B0_IMSK);
1974 synchronize_irq(hw->pdev->irq);
1975 napi_synchronize(&hw->napi);
1979 sky2_free_buffers(sky2);
1984 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1986 if (hw->flags & SKY2_HW_FIBRE_PHY)
1989 if (!(hw->flags & SKY2_HW_GIGABIT)) {
1990 if (aux & PHY_M_PS_SPEED_100)
1996 switch (aux & PHY_M_PS_SPEED_MSK) {
1997 case PHY_M_PS_SPEED_1000:
1999 case PHY_M_PS_SPEED_100:
2006 static void sky2_link_up(struct sky2_port *sky2)
2008 struct sky2_hw *hw = sky2->hw;
2009 unsigned port = sky2->port;
2011 static const char *fc_name[] = {
2019 reg = gma_read16(hw, port, GM_GP_CTRL);
2020 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
2021 gma_write16(hw, port, GM_GP_CTRL, reg);
2023 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
2025 netif_carrier_on(sky2->netdev);
2027 mod_timer(&hw->watchdog_timer, jiffies + 1);
2029 /* Turn on link LED */
2030 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
2031 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
2033 netif_info(sky2, link, sky2->netdev,
2034 "Link is up at %d Mbps, %s duplex, flow control %s\n",
2036 sky2->duplex == DUPLEX_FULL ? "full" : "half",
2037 fc_name[sky2->flow_status]);
2040 static void sky2_link_down(struct sky2_port *sky2)
2042 struct sky2_hw *hw = sky2->hw;
2043 unsigned port = sky2->port;
2046 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
2048 reg = gma_read16(hw, port, GM_GP_CTRL);
2049 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
2050 gma_write16(hw, port, GM_GP_CTRL, reg);
2052 netif_carrier_off(sky2->netdev);
2054 /* Turn off link LED */
2055 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
2057 netif_info(sky2, link, sky2->netdev, "Link is down\n");
2059 sky2_phy_init(hw, port);
2062 static enum flow_control sky2_flow(int rx, int tx)
2065 return tx ? FC_BOTH : FC_RX;
2067 return tx ? FC_TX : FC_NONE;
2070 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
2072 struct sky2_hw *hw = sky2->hw;
2073 unsigned port = sky2->port;
2076 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
2077 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
2078 if (lpa & PHY_M_AN_RF) {
2079 netdev_err(sky2->netdev, "remote fault\n");
2083 if (!(aux & PHY_M_PS_SPDUP_RES)) {
2084 netdev_err(sky2->netdev, "speed/duplex mismatch\n");
2088 sky2->speed = sky2_phy_speed(hw, aux);
2089 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2091 /* Since the pause result bits seem to in different positions on
2092 * different chips. look at registers.
2094 if (hw->flags & SKY2_HW_FIBRE_PHY) {
2095 /* Shift for bits in fiber PHY */
2096 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
2097 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
2099 if (advert & ADVERTISE_1000XPAUSE)
2100 advert |= ADVERTISE_PAUSE_CAP;
2101 if (advert & ADVERTISE_1000XPSE_ASYM)
2102 advert |= ADVERTISE_PAUSE_ASYM;
2103 if (lpa & LPA_1000XPAUSE)
2104 lpa |= LPA_PAUSE_CAP;
2105 if (lpa & LPA_1000XPAUSE_ASYM)
2106 lpa |= LPA_PAUSE_ASYM;
2109 sky2->flow_status = FC_NONE;
2110 if (advert & ADVERTISE_PAUSE_CAP) {
2111 if (lpa & LPA_PAUSE_CAP)
2112 sky2->flow_status = FC_BOTH;
2113 else if (advert & ADVERTISE_PAUSE_ASYM)
2114 sky2->flow_status = FC_RX;
2115 } else if (advert & ADVERTISE_PAUSE_ASYM) {
2116 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
2117 sky2->flow_status = FC_TX;
2120 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000 &&
2121 !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
2122 sky2->flow_status = FC_NONE;
2124 if (sky2->flow_status & FC_TX)
2125 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2127 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2132 /* Interrupt from PHY */
2133 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
2135 struct net_device *dev = hw->dev[port];
2136 struct sky2_port *sky2 = netdev_priv(dev);
2137 u16 istatus, phystat;
2139 if (!netif_running(dev))
2142 spin_lock(&sky2->phy_lock);
2143 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2144 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2146 netif_info(sky2, intr, sky2->netdev, "phy interrupt status 0x%x 0x%x\n",
2149 if (istatus & PHY_M_IS_AN_COMPL) {
2150 if (sky2_autoneg_done(sky2, phystat) == 0 &&
2151 !netif_carrier_ok(dev))
2156 if (istatus & PHY_M_IS_LSP_CHANGE)
2157 sky2->speed = sky2_phy_speed(hw, phystat);
2159 if (istatus & PHY_M_IS_DUP_CHANGE)
2161 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2163 if (istatus & PHY_M_IS_LST_CHANGE) {
2164 if (phystat & PHY_M_PS_LINK_UP)
2167 sky2_link_down(sky2);
2170 spin_unlock(&sky2->phy_lock);
2173 /* Special quick link interrupt (Yukon-2 Optima only) */
2174 static void sky2_qlink_intr(struct sky2_hw *hw)
2176 struct sky2_port *sky2 = netdev_priv(hw->dev[0]);
2181 imask = sky2_read32(hw, B0_IMSK);
2182 imask &= ~Y2_IS_PHY_QLNK;
2183 sky2_write32(hw, B0_IMSK, imask);
2185 /* reset PHY Link Detect */
2186 phy = sky2_pci_read16(hw, PSM_CONFIG_REG4);
2187 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2188 sky2_pci_write16(hw, PSM_CONFIG_REG4, phy | 1);
2189 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2194 /* Transmit timeout is only called if we are running, carrier is up
2195 * and tx queue is full (stopped).
2197 static void sky2_tx_timeout(struct net_device *dev)
2199 struct sky2_port *sky2 = netdev_priv(dev);
2200 struct sky2_hw *hw = sky2->hw;
2202 netif_err(sky2, timer, dev, "tx timeout\n");
2204 netdev_printk(KERN_DEBUG, dev, "transmit ring %u .. %u report=%u done=%u\n",
2205 sky2->tx_cons, sky2->tx_prod,
2206 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
2207 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
2209 /* can't restart safely under softirq */
2210 schedule_work(&hw->restart_work);
2213 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
2215 struct sky2_port *sky2 = netdev_priv(dev);
2216 struct sky2_hw *hw = sky2->hw;
2217 unsigned port = sky2->port;
2222 /* MTU size outside the spec */
2223 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2226 /* MTU > 1500 on yukon FE and FE+ not allowed */
2227 if (new_mtu > ETH_DATA_LEN &&
2228 (hw->chip_id == CHIP_ID_YUKON_FE ||
2229 hw->chip_id == CHIP_ID_YUKON_FE_P))
2232 /* TSO, etc on Yukon Ultra and MTU > 1500 not supported */
2233 if (new_mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U)
2234 dev->features &= ~(NETIF_F_TSO|NETIF_F_SG|NETIF_F_ALL_CSUM);
2236 if (!netif_running(dev)) {
2241 imask = sky2_read32(hw, B0_IMSK);
2242 sky2_write32(hw, B0_IMSK, 0);
2244 dev->trans_start = jiffies; /* prevent tx timeout */
2245 netif_stop_queue(dev);
2246 napi_disable(&hw->napi);
2248 synchronize_irq(hw->pdev->irq);
2250 if (!(hw->flags & SKY2_HW_RAM_BUFFER))
2251 sky2_set_tx_stfwd(hw, port);
2253 ctl = gma_read16(hw, port, GM_GP_CTRL);
2254 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2256 sky2_rx_clean(sky2);
2260 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
2261 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
2263 if (dev->mtu > ETH_DATA_LEN)
2264 mode |= GM_SMOD_JUMBO_ENA;
2266 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2268 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2270 err = sky2_alloc_rx_skbs(sky2);
2272 sky2_rx_start(sky2);
2274 sky2_rx_clean(sky2);
2275 sky2_write32(hw, B0_IMSK, imask);
2277 sky2_read32(hw, B0_Y2_SP_LISR);
2278 napi_enable(&hw->napi);
2283 gma_write16(hw, port, GM_GP_CTRL, ctl);
2285 netif_wake_queue(dev);
2291 /* For small just reuse existing skb for next receive */
2292 static struct sk_buff *receive_copy(struct sky2_port *sky2,
2293 const struct rx_ring_info *re,
2296 struct sk_buff *skb;
2298 skb = netdev_alloc_skb_ip_align(sky2->netdev, length);
2300 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2301 length, PCI_DMA_FROMDEVICE);
2302 skb_copy_from_linear_data(re->skb, skb->data, length);
2303 skb->ip_summed = re->skb->ip_summed;
2304 skb->csum = re->skb->csum;
2305 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2306 length, PCI_DMA_FROMDEVICE);
2307 re->skb->ip_summed = CHECKSUM_NONE;
2308 skb_put(skb, length);
2313 /* Adjust length of skb with fragments to match received data */
2314 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2315 unsigned int length)
2320 /* put header into skb */
2321 size = min(length, hdr_space);
2326 num_frags = skb_shinfo(skb)->nr_frags;
2327 for (i = 0; i < num_frags; i++) {
2328 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2331 /* don't need this page */
2332 __free_page(frag->page);
2333 --skb_shinfo(skb)->nr_frags;
2335 size = min(length, (unsigned) PAGE_SIZE);
2338 skb->data_len += size;
2339 skb->truesize += size;
2346 /* Normal packet - take skb from ring element and put in a new one */
2347 static struct sk_buff *receive_new(struct sky2_port *sky2,
2348 struct rx_ring_info *re,
2349 unsigned int length)
2351 struct sk_buff *skb;
2352 struct rx_ring_info nre;
2353 unsigned hdr_space = sky2->rx_data_size;
2355 nre.skb = sky2_rx_alloc(sky2);
2356 if (unlikely(!nre.skb))
2359 if (sky2_rx_map_skb(sky2->hw->pdev, &nre, hdr_space))
2363 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2364 prefetch(skb->data);
2367 if (skb_shinfo(skb)->nr_frags)
2368 skb_put_frags(skb, hdr_space, length);
2370 skb_put(skb, length);
2374 dev_kfree_skb(nre.skb);
2380 * Receive one packet.
2381 * For larger packets, get new buffer.
2383 static struct sk_buff *sky2_receive(struct net_device *dev,
2384 u16 length, u32 status)
2386 struct sky2_port *sky2 = netdev_priv(dev);
2387 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2388 struct sk_buff *skb = NULL;
2389 u16 count = (status & GMR_FS_LEN) >> 16;
2391 #ifdef SKY2_VLAN_TAG_USED
2392 /* Account for vlan tag */
2393 if (sky2->vlgrp && (status & GMR_FS_VLAN))
2397 netif_printk(sky2, rx_status, KERN_DEBUG, dev,
2398 "rx slot %u status 0x%x len %d\n",
2399 sky2->rx_next, status, length);
2401 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2402 prefetch(sky2->rx_ring + sky2->rx_next);
2404 /* This chip has hardware problems that generates bogus status.
2405 * So do only marginal checking and expect higher level protocols
2406 * to handle crap frames.
2408 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2409 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2413 if (status & GMR_FS_ANY_ERR)
2416 if (!(status & GMR_FS_RX_OK))
2419 /* if length reported by DMA does not match PHY, packet was truncated */
2420 if (length != count)
2424 if (length < copybreak)
2425 skb = receive_copy(sky2, re, length);
2427 skb = receive_new(sky2, re, length);
2429 dev->stats.rx_dropped += (skb == NULL);
2432 sky2_rx_submit(sky2, re);
2437 /* Truncation of overlength packets
2438 causes PHY length to not match MAC length */
2439 ++dev->stats.rx_length_errors;
2440 if (net_ratelimit())
2441 netif_info(sky2, rx_err, dev,
2442 "rx length error: status %#x length %d\n",
2447 ++dev->stats.rx_errors;
2448 if (status & GMR_FS_RX_FF_OV) {
2449 dev->stats.rx_over_errors++;
2453 if (net_ratelimit())
2454 netif_info(sky2, rx_err, dev,
2455 "rx error, status 0x%x length %d\n", status, length);
2457 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
2458 dev->stats.rx_length_errors++;
2459 if (status & GMR_FS_FRAGMENT)
2460 dev->stats.rx_frame_errors++;
2461 if (status & GMR_FS_CRC_ERR)
2462 dev->stats.rx_crc_errors++;
2467 /* Transmit complete */
2468 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2470 struct sky2_port *sky2 = netdev_priv(dev);
2472 if (netif_running(dev)) {
2473 sky2_tx_complete(sky2, last);
2475 /* Wake unless it's detached, and called e.g. from sky2_down() */
2476 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
2477 netif_wake_queue(dev);
2481 static inline void sky2_skb_rx(const struct sky2_port *sky2,
2482 u32 status, struct sk_buff *skb)
2484 #ifdef SKY2_VLAN_TAG_USED
2485 u16 vlan_tag = be16_to_cpu(sky2->rx_tag);
2486 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
2487 if (skb->ip_summed == CHECKSUM_NONE)
2488 vlan_hwaccel_receive_skb(skb, sky2->vlgrp, vlan_tag);
2490 vlan_gro_receive(&sky2->hw->napi, sky2->vlgrp,
2495 if (skb->ip_summed == CHECKSUM_NONE)
2496 netif_receive_skb(skb);
2498 napi_gro_receive(&sky2->hw->napi, skb);
2501 static inline void sky2_rx_done(struct sky2_hw *hw, unsigned port,
2502 unsigned packets, unsigned bytes)
2505 struct net_device *dev = hw->dev[port];
2507 dev->stats.rx_packets += packets;
2508 dev->stats.rx_bytes += bytes;
2509 dev->last_rx = jiffies;
2510 sky2_rx_update(netdev_priv(dev), rxqaddr[port]);
2514 static void sky2_rx_checksum(struct sky2_port *sky2, u32 status)
2516 /* If this happens then driver assuming wrong format for chip type */
2517 BUG_ON(sky2->hw->flags & SKY2_HW_NEW_LE);
2519 /* Both checksum counters are programmed to start at
2520 * the same offset, so unless there is a problem they
2521 * should match. This failure is an early indication that
2522 * hardware receive checksumming won't work.
2524 if (likely((u16)(status >> 16) == (u16)status)) {
2525 struct sk_buff *skb = sky2->rx_ring[sky2->rx_next].skb;
2526 skb->ip_summed = CHECKSUM_COMPLETE;
2527 skb->csum = le16_to_cpu(status);
2529 dev_notice(&sky2->hw->pdev->dev,
2530 "%s: receive checksum problem (status = %#x)\n",
2531 sky2->netdev->name, status);
2533 /* Disable checksum offload */
2534 sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM;
2535 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2540 /* Process status response ring */
2541 static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
2544 unsigned int total_bytes[2] = { 0 };
2545 unsigned int total_packets[2] = { 0 };
2549 struct sky2_port *sky2;
2550 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2552 struct net_device *dev;
2553 struct sk_buff *skb;
2556 u8 opcode = le->opcode;
2558 if (!(opcode & HW_OWNER))
2561 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
2563 port = le->css & CSS_LINK_BIT;
2564 dev = hw->dev[port];
2565 sky2 = netdev_priv(dev);
2566 length = le16_to_cpu(le->length);
2567 status = le32_to_cpu(le->status);
2570 switch (opcode & ~HW_OWNER) {
2572 total_packets[port]++;
2573 total_bytes[port] += length;
2575 skb = sky2_receive(dev, length, status);
2579 /* This chip reports checksum status differently */
2580 if (hw->flags & SKY2_HW_NEW_LE) {
2581 if ((sky2->flags & SKY2_FLAG_RX_CHECKSUM) &&
2582 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2583 (le->css & CSS_TCPUDPCSOK))
2584 skb->ip_summed = CHECKSUM_UNNECESSARY;
2586 skb->ip_summed = CHECKSUM_NONE;
2589 skb->protocol = eth_type_trans(skb, dev);
2591 sky2_skb_rx(sky2, status, skb);
2593 /* Stop after net poll weight */
2594 if (++work_done >= to_do)
2598 #ifdef SKY2_VLAN_TAG_USED
2600 sky2->rx_tag = length;
2604 sky2->rx_tag = length;
2608 if (likely(sky2->flags & SKY2_FLAG_RX_CHECKSUM))
2609 sky2_rx_checksum(sky2, status);
2613 /* TX index reports status for both ports */
2614 sky2_tx_done(hw->dev[0], status & 0xfff);
2616 sky2_tx_done(hw->dev[1],
2617 ((status >> 24) & 0xff)
2618 | (u16)(length & 0xf) << 8);
2622 if (net_ratelimit())
2623 pr_warning("unknown status opcode 0x%x\n", opcode);
2625 } while (hw->st_idx != idx);
2627 /* Fully processed status ring so clear irq */
2628 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2631 sky2_rx_done(hw, 0, total_packets[0], total_bytes[0]);
2632 sky2_rx_done(hw, 1, total_packets[1], total_bytes[1]);
2637 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2639 struct net_device *dev = hw->dev[port];
2641 if (net_ratelimit())
2642 netdev_info(dev, "hw error interrupt status 0x%x\n", status);
2644 if (status & Y2_IS_PAR_RD1) {
2645 if (net_ratelimit())
2646 netdev_err(dev, "ram data read parity error\n");
2648 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2651 if (status & Y2_IS_PAR_WR1) {
2652 if (net_ratelimit())
2653 netdev_err(dev, "ram data write parity error\n");
2655 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2658 if (status & Y2_IS_PAR_MAC1) {
2659 if (net_ratelimit())
2660 netdev_err(dev, "MAC parity error\n");
2661 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2664 if (status & Y2_IS_PAR_RX1) {
2665 if (net_ratelimit())
2666 netdev_err(dev, "RX parity error\n");
2667 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2670 if (status & Y2_IS_TCP_TXA1) {
2671 if (net_ratelimit())
2672 netdev_err(dev, "TCP segmentation error\n");
2673 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2677 static void sky2_hw_intr(struct sky2_hw *hw)
2679 struct pci_dev *pdev = hw->pdev;
2680 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2681 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2685 if (status & Y2_IS_TIST_OV)
2686 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2688 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2691 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2692 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2693 if (net_ratelimit())
2694 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
2697 sky2_pci_write16(hw, PCI_STATUS,
2698 pci_err | PCI_STATUS_ERROR_BITS);
2699 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2702 if (status & Y2_IS_PCI_EXP) {
2703 /* PCI-Express uncorrectable Error occurred */
2706 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2707 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2708 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2710 if (net_ratelimit())
2711 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
2713 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2714 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2717 if (status & Y2_HWE_L1_MASK)
2718 sky2_hw_error(hw, 0, status);
2720 if (status & Y2_HWE_L1_MASK)
2721 sky2_hw_error(hw, 1, status);
2724 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2726 struct net_device *dev = hw->dev[port];
2727 struct sky2_port *sky2 = netdev_priv(dev);
2728 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2730 netif_info(sky2, intr, dev, "mac interrupt status 0x%x\n", status);
2732 if (status & GM_IS_RX_CO_OV)
2733 gma_read16(hw, port, GM_RX_IRQ_SRC);
2735 if (status & GM_IS_TX_CO_OV)
2736 gma_read16(hw, port, GM_TX_IRQ_SRC);
2738 if (status & GM_IS_RX_FF_OR) {
2739 ++dev->stats.rx_fifo_errors;
2740 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2743 if (status & GM_IS_TX_FF_UR) {
2744 ++dev->stats.tx_fifo_errors;
2745 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2749 /* This should never happen it is a bug. */
2750 static void sky2_le_error(struct sky2_hw *hw, unsigned port, u16 q)
2752 struct net_device *dev = hw->dev[port];
2753 u16 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2755 dev_err(&hw->pdev->dev, "%s: descriptor error q=%#x get=%u put=%u\n",
2756 dev->name, (unsigned) q, (unsigned) idx,
2757 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2759 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2762 static int sky2_rx_hung(struct net_device *dev)
2764 struct sky2_port *sky2 = netdev_priv(dev);
2765 struct sky2_hw *hw = sky2->hw;
2766 unsigned port = sky2->port;
2767 unsigned rxq = rxqaddr[port];
2768 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2769 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2770 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2771 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2773 /* If idle and MAC or PCI is stuck */
2774 if (sky2->check.last == dev->last_rx &&
2775 ((mac_rp == sky2->check.mac_rp &&
2776 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2777 /* Check if the PCI RX hang */
2778 (fifo_rp == sky2->check.fifo_rp &&
2779 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2780 netdev_printk(KERN_DEBUG, dev,
2781 "hung mac %d:%d fifo %d (%d:%d)\n",
2782 mac_lev, mac_rp, fifo_lev,
2783 fifo_rp, sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2786 sky2->check.last = dev->last_rx;
2787 sky2->check.mac_rp = mac_rp;
2788 sky2->check.mac_lev = mac_lev;
2789 sky2->check.fifo_rp = fifo_rp;
2790 sky2->check.fifo_lev = fifo_lev;
2795 static void sky2_watchdog(unsigned long arg)
2797 struct sky2_hw *hw = (struct sky2_hw *) arg;
2799 /* Check for lost IRQ once a second */
2800 if (sky2_read32(hw, B0_ISRC)) {
2801 napi_schedule(&hw->napi);
2805 for (i = 0; i < hw->ports; i++) {
2806 struct net_device *dev = hw->dev[i];
2807 if (!netif_running(dev))
2811 /* For chips with Rx FIFO, check if stuck */
2812 if ((hw->flags & SKY2_HW_RAM_BUFFER) &&
2813 sky2_rx_hung(dev)) {
2814 netdev_info(dev, "receiver hang detected\n");
2815 schedule_work(&hw->restart_work);
2824 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
2827 /* Hardware/software error handling */
2828 static void sky2_err_intr(struct sky2_hw *hw, u32 status)
2830 if (net_ratelimit())
2831 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
2833 if (status & Y2_IS_HW_ERR)
2836 if (status & Y2_IS_IRQ_MAC1)
2837 sky2_mac_intr(hw, 0);
2839 if (status & Y2_IS_IRQ_MAC2)
2840 sky2_mac_intr(hw, 1);
2842 if (status & Y2_IS_CHK_RX1)
2843 sky2_le_error(hw, 0, Q_R1);
2845 if (status & Y2_IS_CHK_RX2)
2846 sky2_le_error(hw, 1, Q_R2);
2848 if (status & Y2_IS_CHK_TXA1)
2849 sky2_le_error(hw, 0, Q_XA1);
2851 if (status & Y2_IS_CHK_TXA2)
2852 sky2_le_error(hw, 1, Q_XA2);
2855 static int sky2_poll(struct napi_struct *napi, int work_limit)
2857 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
2858 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2862 if (unlikely(status & Y2_IS_ERROR))
2863 sky2_err_intr(hw, status);
2865 if (status & Y2_IS_IRQ_PHY1)
2866 sky2_phy_intr(hw, 0);
2868 if (status & Y2_IS_IRQ_PHY2)
2869 sky2_phy_intr(hw, 1);
2871 if (status & Y2_IS_PHY_QLNK)
2872 sky2_qlink_intr(hw);
2874 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
2875 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
2877 if (work_done >= work_limit)
2881 napi_complete(napi);
2882 sky2_read32(hw, B0_Y2_SP_LISR);
2888 static irqreturn_t sky2_intr(int irq, void *dev_id)
2890 struct sky2_hw *hw = dev_id;
2893 /* Reading this mask interrupts as side effect */
2894 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2895 if (status == 0 || status == ~0)
2898 prefetch(&hw->st_le[hw->st_idx]);
2900 napi_schedule(&hw->napi);
2905 #ifdef CONFIG_NET_POLL_CONTROLLER
2906 static void sky2_netpoll(struct net_device *dev)
2908 struct sky2_port *sky2 = netdev_priv(dev);
2910 napi_schedule(&sky2->hw->napi);
2914 /* Chip internal frequency for clock calculations */
2915 static u32 sky2_mhz(const struct sky2_hw *hw)
2917 switch (hw->chip_id) {
2918 case CHIP_ID_YUKON_EC:
2919 case CHIP_ID_YUKON_EC_U:
2920 case CHIP_ID_YUKON_EX:
2921 case CHIP_ID_YUKON_SUPR:
2922 case CHIP_ID_YUKON_UL_2:
2923 case CHIP_ID_YUKON_OPT:
2926 case CHIP_ID_YUKON_FE:
2929 case CHIP_ID_YUKON_FE_P:
2932 case CHIP_ID_YUKON_XL:
2940 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2942 return sky2_mhz(hw) * us;
2945 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2947 return clk / sky2_mhz(hw);
2951 static int __devinit sky2_init(struct sky2_hw *hw)
2955 /* Enable all clocks and check for bad PCI access */
2956 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
2958 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2960 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2961 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2963 switch(hw->chip_id) {
2964 case CHIP_ID_YUKON_XL:
2965 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
2968 case CHIP_ID_YUKON_EC_U:
2969 hw->flags = SKY2_HW_GIGABIT
2971 | SKY2_HW_ADV_POWER_CTL;
2974 case CHIP_ID_YUKON_EX:
2975 hw->flags = SKY2_HW_GIGABIT
2978 | SKY2_HW_ADV_POWER_CTL;
2980 /* New transmit checksum */
2981 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
2982 hw->flags |= SKY2_HW_AUTO_TX_SUM;
2985 case CHIP_ID_YUKON_EC:
2986 /* This rev is really old, and requires untested workarounds */
2987 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
2988 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
2991 hw->flags = SKY2_HW_GIGABIT;
2994 case CHIP_ID_YUKON_FE:
2997 case CHIP_ID_YUKON_FE_P:
2998 hw->flags = SKY2_HW_NEWER_PHY
3000 | SKY2_HW_AUTO_TX_SUM
3001 | SKY2_HW_ADV_POWER_CTL;
3004 case CHIP_ID_YUKON_SUPR:
3005 hw->flags = SKY2_HW_GIGABIT
3008 | SKY2_HW_AUTO_TX_SUM
3009 | SKY2_HW_ADV_POWER_CTL;
3012 case CHIP_ID_YUKON_UL_2:
3013 hw->flags = SKY2_HW_GIGABIT
3014 | SKY2_HW_ADV_POWER_CTL;
3017 case CHIP_ID_YUKON_OPT:
3018 hw->flags = SKY2_HW_GIGABIT
3020 | SKY2_HW_ADV_POWER_CTL;
3024 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
3029 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
3030 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
3031 hw->flags |= SKY2_HW_FIBRE_PHY;
3034 t8 = sky2_read8(hw, B2_Y2_HW_RES);
3035 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
3036 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
3040 if (sky2_read8(hw, B2_E_0))
3041 hw->flags |= SKY2_HW_RAM_BUFFER;
3046 static void sky2_reset(struct sky2_hw *hw)
3048 struct pci_dev *pdev = hw->pdev;
3051 u32 hwe_mask = Y2_HWE_ALL_MASK;
3054 if (hw->chip_id == CHIP_ID_YUKON_EX
3055 || hw->chip_id == CHIP_ID_YUKON_SUPR) {
3056 sky2_write32(hw, CPU_WDOG, 0);
3057 status = sky2_read16(hw, HCU_CCSR);
3058 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
3059 HCU_CCSR_UC_STATE_MSK);
3061 * CPU clock divider shouldn't be used because
3062 * - ASF firmware may malfunction
3063 * - Yukon-Supreme: Parallel FLASH doesn't support divided clocks
3065 status &= ~HCU_CCSR_CPU_CLK_DIVIDE_MSK;
3066 sky2_write16(hw, HCU_CCSR, status);
3067 sky2_write32(hw, CPU_WDOG, 0);
3069 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
3070 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
3073 sky2_write8(hw, B0_CTST, CS_RST_SET);
3074 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3076 /* allow writes to PCI config */
3077 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3079 /* clear PCI errors, if any */
3080 status = sky2_pci_read16(hw, PCI_STATUS);
3081 status |= PCI_STATUS_ERROR_BITS;
3082 sky2_pci_write16(hw, PCI_STATUS, status);
3084 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
3086 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3088 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
3091 /* If error bit is stuck on ignore it */
3092 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
3093 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
3095 hwe_mask |= Y2_IS_PCI_EXP;
3099 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3101 for (i = 0; i < hw->ports; i++) {
3102 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
3103 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
3105 if (hw->chip_id == CHIP_ID_YUKON_EX ||
3106 hw->chip_id == CHIP_ID_YUKON_SUPR)
3107 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
3108 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
3113 if (hw->chip_id == CHIP_ID_YUKON_SUPR && hw->chip_rev > CHIP_REV_YU_SU_B0) {
3114 /* enable MACSec clock gating */
3115 sky2_pci_write32(hw, PCI_DEV_REG3, P_CLK_MACSEC_DIS);
3118 if (hw->chip_id == CHIP_ID_YUKON_OPT) {
3122 if (hw->chip_rev == 0) {
3123 /* disable PCI-E PHY power down (set PHY reg 0x80, bit 7 */
3124 sky2_write32(hw, Y2_PEX_PHY_DATA, (0x80UL << 16) | (1 << 7));
3126 /* set PHY Link Detect Timer to 1.1 second (11x 100ms) */
3129 /* set PHY Link Detect Timer to 0.4 second (4x 100ms) */
3133 reg <<= PSM_CONFIG_REG4_TIMER_PHY_LINK_DETECT_BASE;
3135 /* reset PHY Link Detect */
3136 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3137 sky2_pci_write16(hw, PSM_CONFIG_REG4,
3138 reg | PSM_CONFIG_REG4_RST_PHY_LINK_DETECT);
3139 sky2_pci_write16(hw, PSM_CONFIG_REG4, reg);
3142 /* enable PHY Quick Link */
3143 msk = sky2_read32(hw, B0_IMSK);
3144 msk |= Y2_IS_PHY_QLNK;
3145 sky2_write32(hw, B0_IMSK, msk);
3147 /* check if PSMv2 was running before */
3148 reg = sky2_pci_read16(hw, PSM_CONFIG_REG3);
3149 if (reg & PCI_EXP_LNKCTL_ASPMC) {
3150 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3151 /* restore the PCIe Link Control register */
3152 sky2_pci_write16(hw, cap + PCI_EXP_LNKCTL, reg);
3154 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3156 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3157 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3160 /* Clear I2C IRQ noise */
3161 sky2_write32(hw, B2_I2C_IRQ, 1);
3163 /* turn off hardware timer (unused) */
3164 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
3165 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
3167 /* Turn off descriptor polling */
3168 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
3170 /* Turn off receive timestamp */
3171 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
3172 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
3174 /* enable the Tx Arbiters */
3175 for (i = 0; i < hw->ports; i++)
3176 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3178 /* Initialize ram interface */
3179 for (i = 0; i < hw->ports; i++) {
3180 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
3182 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
3183 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
3184 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
3185 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
3186 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
3187 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
3188 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
3189 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
3190 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
3191 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
3192 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
3193 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
3196 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
3198 for (i = 0; i < hw->ports; i++)
3199 sky2_gmac_reset(hw, i);
3201 memset(hw->st_le, 0, STATUS_LE_BYTES);
3204 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
3205 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
3207 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
3208 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
3210 /* Set the list last index */
3211 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
3213 sky2_write16(hw, STAT_TX_IDX_TH, 10);
3214 sky2_write8(hw, STAT_FIFO_WM, 16);
3216 /* set Status-FIFO ISR watermark */
3217 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
3218 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
3220 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
3222 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
3223 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
3224 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
3226 /* enable status unit */
3227 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
3229 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3230 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3231 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3234 /* Take device down (offline).
3235 * Equivalent to doing dev_stop() but this does not
3236 * inform upper layers of the transistion.
3238 static void sky2_detach(struct net_device *dev)
3240 if (netif_running(dev)) {
3242 netif_device_detach(dev); /* stop txq */
3243 netif_tx_unlock(dev);
3248 /* Bring device back after doing sky2_detach */
3249 static int sky2_reattach(struct net_device *dev)
3253 if (netif_running(dev)) {
3256 netdev_info(dev, "could not restart %d\n", err);
3259 netif_device_attach(dev);
3260 sky2_set_multicast(dev);
3267 static void sky2_restart(struct work_struct *work)
3269 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
3275 napi_disable(&hw->napi);
3276 synchronize_irq(hw->pdev->irq);
3277 imask = sky2_read32(hw, B0_IMSK);
3278 sky2_write32(hw, B0_IMSK, 0);
3280 for (i = 0; i < hw->ports; i++) {
3281 struct net_device *dev = hw->dev[i];
3282 struct sky2_port *sky2 = netdev_priv(dev);
3284 if (!netif_running(dev))
3287 netif_carrier_off(dev);
3288 netif_tx_disable(dev);
3294 for (i = 0; i < hw->ports; i++) {
3295 struct net_device *dev = hw->dev[i];
3296 struct sky2_port *sky2 = netdev_priv(dev);
3298 if (!netif_running(dev))
3302 netif_wake_queue(dev);
3305 sky2_write32(hw, B0_IMSK, imask);
3306 sky2_read32(hw, B0_IMSK);
3308 sky2_read32(hw, B0_Y2_SP_LISR);
3309 napi_enable(&hw->napi);
3314 static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
3316 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
3319 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3321 const struct sky2_port *sky2 = netdev_priv(dev);
3323 wol->supported = sky2_wol_supported(sky2->hw);
3324 wol->wolopts = sky2->wol;
3327 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3329 struct sky2_port *sky2 = netdev_priv(dev);
3330 struct sky2_hw *hw = sky2->hw;
3332 if ((wol->wolopts & ~sky2_wol_supported(sky2->hw)) ||
3333 !device_can_wakeup(&hw->pdev->dev))
3336 sky2->wol = wol->wolopts;
3340 static u32 sky2_supported_modes(const struct sky2_hw *hw)
3342 if (sky2_is_copper(hw)) {
3343 u32 modes = SUPPORTED_10baseT_Half
3344 | SUPPORTED_10baseT_Full
3345 | SUPPORTED_100baseT_Half
3346 | SUPPORTED_100baseT_Full
3347 | SUPPORTED_Autoneg | SUPPORTED_TP;
3349 if (hw->flags & SKY2_HW_GIGABIT)
3350 modes |= SUPPORTED_1000baseT_Half
3351 | SUPPORTED_1000baseT_Full;
3354 return SUPPORTED_1000baseT_Half
3355 | SUPPORTED_1000baseT_Full
3360 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3362 struct sky2_port *sky2 = netdev_priv(dev);
3363 struct sky2_hw *hw = sky2->hw;
3365 ecmd->transceiver = XCVR_INTERNAL;
3366 ecmd->supported = sky2_supported_modes(hw);
3367 ecmd->phy_address = PHY_ADDR_MARV;
3368 if (sky2_is_copper(hw)) {
3369 ecmd->port = PORT_TP;
3370 ecmd->speed = sky2->speed;
3372 ecmd->speed = SPEED_1000;
3373 ecmd->port = PORT_FIBRE;
3376 ecmd->advertising = sky2->advertising;
3377 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_SPEED)
3378 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3379 ecmd->duplex = sky2->duplex;
3383 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3385 struct sky2_port *sky2 = netdev_priv(dev);
3386 const struct sky2_hw *hw = sky2->hw;
3387 u32 supported = sky2_supported_modes(hw);
3389 if (ecmd->autoneg == AUTONEG_ENABLE) {
3390 sky2->flags |= SKY2_FLAG_AUTO_SPEED;
3391 ecmd->advertising = supported;
3397 switch (ecmd->speed) {
3399 if (ecmd->duplex == DUPLEX_FULL)
3400 setting = SUPPORTED_1000baseT_Full;
3401 else if (ecmd->duplex == DUPLEX_HALF)
3402 setting = SUPPORTED_1000baseT_Half;
3407 if (ecmd->duplex == DUPLEX_FULL)
3408 setting = SUPPORTED_100baseT_Full;
3409 else if (ecmd->duplex == DUPLEX_HALF)
3410 setting = SUPPORTED_100baseT_Half;
3416 if (ecmd->duplex == DUPLEX_FULL)
3417 setting = SUPPORTED_10baseT_Full;
3418 else if (ecmd->duplex == DUPLEX_HALF)
3419 setting = SUPPORTED_10baseT_Half;
3427 if ((setting & supported) == 0)
3430 sky2->speed = ecmd->speed;
3431 sky2->duplex = ecmd->duplex;
3432 sky2->flags &= ~SKY2_FLAG_AUTO_SPEED;
3435 sky2->advertising = ecmd->advertising;
3437 if (netif_running(dev)) {
3438 sky2_phy_reinit(sky2);
3439 sky2_set_multicast(dev);
3445 static void sky2_get_drvinfo(struct net_device *dev,
3446 struct ethtool_drvinfo *info)
3448 struct sky2_port *sky2 = netdev_priv(dev);
3450 strcpy(info->driver, DRV_NAME);
3451 strcpy(info->version, DRV_VERSION);
3452 strcpy(info->fw_version, "N/A");
3453 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
3456 static const struct sky2_stat {
3457 char name[ETH_GSTRING_LEN];
3460 { "tx_bytes", GM_TXO_OK_HI },
3461 { "rx_bytes", GM_RXO_OK_HI },
3462 { "tx_broadcast", GM_TXF_BC_OK },
3463 { "rx_broadcast", GM_RXF_BC_OK },
3464 { "tx_multicast", GM_TXF_MC_OK },
3465 { "rx_multicast", GM_RXF_MC_OK },
3466 { "tx_unicast", GM_TXF_UC_OK },
3467 { "rx_unicast", GM_RXF_UC_OK },
3468 { "tx_mac_pause", GM_TXF_MPAUSE },
3469 { "rx_mac_pause", GM_RXF_MPAUSE },
3470 { "collisions", GM_TXF_COL },
3471 { "late_collision",GM_TXF_LAT_COL },
3472 { "aborted", GM_TXF_ABO_COL },
3473 { "single_collisions", GM_TXF_SNG_COL },
3474 { "multi_collisions", GM_TXF_MUL_COL },
3476 { "rx_short", GM_RXF_SHT },
3477 { "rx_runt", GM_RXE_FRAG },
3478 { "rx_64_byte_packets", GM_RXF_64B },
3479 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3480 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3481 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3482 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3483 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3484 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3485 { "rx_too_long", GM_RXF_LNG_ERR },
3486 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3487 { "rx_jabber", GM_RXF_JAB_PKT },
3488 { "rx_fcs_error", GM_RXF_FCS_ERR },
3490 { "tx_64_byte_packets", GM_TXF_64B },
3491 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3492 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3493 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3494 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3495 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3496 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3497 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3500 static u32 sky2_get_rx_csum(struct net_device *dev)
3502 struct sky2_port *sky2 = netdev_priv(dev);
3504 return !!(sky2->flags & SKY2_FLAG_RX_CHECKSUM);
3507 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
3509 struct sky2_port *sky2 = netdev_priv(dev);
3512 sky2->flags |= SKY2_FLAG_RX_CHECKSUM;
3514 sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM;
3516 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
3517 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
3522 static u32 sky2_get_msglevel(struct net_device *netdev)
3524 struct sky2_port *sky2 = netdev_priv(netdev);
3525 return sky2->msg_enable;
3528 static int sky2_nway_reset(struct net_device *dev)
3530 struct sky2_port *sky2 = netdev_priv(dev);
3532 if (!netif_running(dev) || !(sky2->flags & SKY2_FLAG_AUTO_SPEED))
3535 sky2_phy_reinit(sky2);
3536 sky2_set_multicast(dev);
3541 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3543 struct sky2_hw *hw = sky2->hw;
3544 unsigned port = sky2->port;
3547 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
3548 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
3549 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
3550 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
3552 for (i = 2; i < count; i++)
3553 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
3556 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3558 struct sky2_port *sky2 = netdev_priv(netdev);
3559 sky2->msg_enable = value;
3562 static int sky2_get_sset_count(struct net_device *dev, int sset)
3566 return ARRAY_SIZE(sky2_stats);
3572 static void sky2_get_ethtool_stats(struct net_device *dev,
3573 struct ethtool_stats *stats, u64 * data)
3575 struct sky2_port *sky2 = netdev_priv(dev);
3577 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3580 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3584 switch (stringset) {
3586 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3587 memcpy(data + i * ETH_GSTRING_LEN,
3588 sky2_stats[i].name, ETH_GSTRING_LEN);
3593 static int sky2_set_mac_address(struct net_device *dev, void *p)
3595 struct sky2_port *sky2 = netdev_priv(dev);
3596 struct sky2_hw *hw = sky2->hw;
3597 unsigned port = sky2->port;
3598 const struct sockaddr *addr = p;
3600 if (!is_valid_ether_addr(addr->sa_data))
3601 return -EADDRNOTAVAIL;
3603 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3604 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3605 dev->dev_addr, ETH_ALEN);
3606 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3607 dev->dev_addr, ETH_ALEN);
3609 /* virtual address for data */
3610 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3612 /* physical address: used for pause frames */
3613 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3618 static void inline sky2_add_filter(u8 filter[8], const u8 *addr)
3622 bit = ether_crc(ETH_ALEN, addr) & 63;
3623 filter[bit >> 3] |= 1 << (bit & 7);
3626 static void sky2_set_multicast(struct net_device *dev)
3628 struct sky2_port *sky2 = netdev_priv(dev);
3629 struct sky2_hw *hw = sky2->hw;
3630 unsigned port = sky2->port;
3631 struct netdev_hw_addr *ha;
3635 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3637 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3638 memset(filter, 0, sizeof(filter));
3640 reg = gma_read16(hw, port, GM_RX_CTRL);
3641 reg |= GM_RXCR_UCF_ENA;
3643 if (dev->flags & IFF_PROMISC) /* promiscuous */
3644 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3645 else if (dev->flags & IFF_ALLMULTI)
3646 memset(filter, 0xff, sizeof(filter));
3647 else if (netdev_mc_empty(dev) && !rx_pause)
3648 reg &= ~GM_RXCR_MCF_ENA;
3650 reg |= GM_RXCR_MCF_ENA;
3653 sky2_add_filter(filter, pause_mc_addr);
3655 netdev_for_each_mc_addr(ha, dev)
3656 sky2_add_filter(filter, ha->addr);
3659 gma_write16(hw, port, GM_MC_ADDR_H1,
3660 (u16) filter[0] | ((u16) filter[1] << 8));
3661 gma_write16(hw, port, GM_MC_ADDR_H2,
3662 (u16) filter[2] | ((u16) filter[3] << 8));
3663 gma_write16(hw, port, GM_MC_ADDR_H3,
3664 (u16) filter[4] | ((u16) filter[5] << 8));
3665 gma_write16(hw, port, GM_MC_ADDR_H4,
3666 (u16) filter[6] | ((u16) filter[7] << 8));
3668 gma_write16(hw, port, GM_RX_CTRL, reg);
3671 /* Can have one global because blinking is controlled by
3672 * ethtool and that is always under RTNL mutex
3674 static void sky2_led(struct sky2_port *sky2, enum led_mode mode)
3676 struct sky2_hw *hw = sky2->hw;
3677 unsigned port = sky2->port;
3679 spin_lock_bh(&sky2->phy_lock);
3680 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3681 hw->chip_id == CHIP_ID_YUKON_EX ||
3682 hw->chip_id == CHIP_ID_YUKON_SUPR) {
3684 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3685 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3689 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3690 PHY_M_LEDC_LOS_CTRL(8) |
3691 PHY_M_LEDC_INIT_CTRL(8) |
3692 PHY_M_LEDC_STA1_CTRL(8) |
3693 PHY_M_LEDC_STA0_CTRL(8));
3696 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3697 PHY_M_LEDC_LOS_CTRL(9) |
3698 PHY_M_LEDC_INIT_CTRL(9) |
3699 PHY_M_LEDC_STA1_CTRL(9) |
3700 PHY_M_LEDC_STA0_CTRL(9));
3703 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3704 PHY_M_LEDC_LOS_CTRL(0xa) |
3705 PHY_M_LEDC_INIT_CTRL(0xa) |
3706 PHY_M_LEDC_STA1_CTRL(0xa) |
3707 PHY_M_LEDC_STA0_CTRL(0xa));
3710 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3711 PHY_M_LEDC_LOS_CTRL(1) |
3712 PHY_M_LEDC_INIT_CTRL(8) |
3713 PHY_M_LEDC_STA1_CTRL(7) |
3714 PHY_M_LEDC_STA0_CTRL(7));
3717 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3719 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3720 PHY_M_LED_MO_DUP(mode) |
3721 PHY_M_LED_MO_10(mode) |
3722 PHY_M_LED_MO_100(mode) |
3723 PHY_M_LED_MO_1000(mode) |
3724 PHY_M_LED_MO_RX(mode) |
3725 PHY_M_LED_MO_TX(mode));
3727 spin_unlock_bh(&sky2->phy_lock);
3730 /* blink LED's for finding board */
3731 static int sky2_phys_id(struct net_device *dev, u32 data)
3733 struct sky2_port *sky2 = netdev_priv(dev);
3739 for (i = 0; i < data; i++) {
3740 sky2_led(sky2, MO_LED_ON);
3741 if (msleep_interruptible(500))
3743 sky2_led(sky2, MO_LED_OFF);
3744 if (msleep_interruptible(500))
3747 sky2_led(sky2, MO_LED_NORM);
3752 static void sky2_get_pauseparam(struct net_device *dev,
3753 struct ethtool_pauseparam *ecmd)
3755 struct sky2_port *sky2 = netdev_priv(dev);
3757 switch (sky2->flow_mode) {
3759 ecmd->tx_pause = ecmd->rx_pause = 0;
3762 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
3765 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
3768 ecmd->tx_pause = ecmd->rx_pause = 1;
3771 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_PAUSE)
3772 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3775 static int sky2_set_pauseparam(struct net_device *dev,
3776 struct ethtool_pauseparam *ecmd)
3778 struct sky2_port *sky2 = netdev_priv(dev);
3780 if (ecmd->autoneg == AUTONEG_ENABLE)
3781 sky2->flags |= SKY2_FLAG_AUTO_PAUSE;
3783 sky2->flags &= ~SKY2_FLAG_AUTO_PAUSE;
3785 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
3787 if (netif_running(dev))
3788 sky2_phy_reinit(sky2);
3793 static int sky2_get_coalesce(struct net_device *dev,
3794 struct ethtool_coalesce *ecmd)
3796 struct sky2_port *sky2 = netdev_priv(dev);
3797 struct sky2_hw *hw = sky2->hw;
3799 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
3800 ecmd->tx_coalesce_usecs = 0;
3802 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
3803 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
3805 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
3807 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
3808 ecmd->rx_coalesce_usecs = 0;
3810 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
3811 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
3813 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
3815 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
3816 ecmd->rx_coalesce_usecs_irq = 0;
3818 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
3819 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
3822 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
3827 /* Note: this affect both ports */
3828 static int sky2_set_coalesce(struct net_device *dev,
3829 struct ethtool_coalesce *ecmd)
3831 struct sky2_port *sky2 = netdev_priv(dev);
3832 struct sky2_hw *hw = sky2->hw;
3833 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
3835 if (ecmd->tx_coalesce_usecs > tmax ||
3836 ecmd->rx_coalesce_usecs > tmax ||
3837 ecmd->rx_coalesce_usecs_irq > tmax)
3840 if (ecmd->tx_max_coalesced_frames >= sky2->tx_ring_size-1)
3842 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
3844 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
3847 if (ecmd->tx_coalesce_usecs == 0)
3848 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
3850 sky2_write32(hw, STAT_TX_TIMER_INI,
3851 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
3852 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3854 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
3856 if (ecmd->rx_coalesce_usecs == 0)
3857 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
3859 sky2_write32(hw, STAT_LEV_TIMER_INI,
3860 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
3861 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3863 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
3865 if (ecmd->rx_coalesce_usecs_irq == 0)
3866 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
3868 sky2_write32(hw, STAT_ISR_TIMER_INI,
3869 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
3870 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3872 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
3876 static void sky2_get_ringparam(struct net_device *dev,
3877 struct ethtool_ringparam *ering)
3879 struct sky2_port *sky2 = netdev_priv(dev);
3881 ering->rx_max_pending = RX_MAX_PENDING;
3882 ering->rx_mini_max_pending = 0;
3883 ering->rx_jumbo_max_pending = 0;
3884 ering->tx_max_pending = TX_MAX_PENDING;
3886 ering->rx_pending = sky2->rx_pending;
3887 ering->rx_mini_pending = 0;
3888 ering->rx_jumbo_pending = 0;
3889 ering->tx_pending = sky2->tx_pending;
3892 static int sky2_set_ringparam(struct net_device *dev,
3893 struct ethtool_ringparam *ering)
3895 struct sky2_port *sky2 = netdev_priv(dev);
3897 if (ering->rx_pending > RX_MAX_PENDING ||
3898 ering->rx_pending < 8 ||
3899 ering->tx_pending < TX_MIN_PENDING ||
3900 ering->tx_pending > TX_MAX_PENDING)
3905 sky2->rx_pending = ering->rx_pending;
3906 sky2->tx_pending = ering->tx_pending;
3907 sky2->tx_ring_size = roundup_pow_of_two(sky2->tx_pending+1);
3909 return sky2_reattach(dev);
3912 static int sky2_get_regs_len(struct net_device *dev)
3917 static int sky2_reg_access_ok(struct sky2_hw *hw, unsigned int b)
3919 /* This complicated switch statement is to make sure and
3920 * only access regions that are unreserved.
3921 * Some blocks are only valid on dual port cards.
3925 case 5: /* Tx Arbiter 2 */
3927 case 14 ... 15: /* TX2 */
3928 case 17: case 19: /* Ram Buffer 2 */
3929 case 22 ... 23: /* Tx Ram Buffer 2 */
3930 case 25: /* Rx MAC Fifo 1 */
3931 case 27: /* Tx MAC Fifo 2 */
3932 case 31: /* GPHY 2 */
3933 case 40 ... 47: /* Pattern Ram 2 */
3934 case 52: case 54: /* TCP Segmentation 2 */
3935 case 112 ... 116: /* GMAC 2 */
3936 return hw->ports > 1;
3938 case 0: /* Control */
3939 case 2: /* Mac address */
3940 case 4: /* Tx Arbiter 1 */
3941 case 7: /* PCI express reg */
3943 case 12 ... 13: /* TX1 */
3944 case 16: case 18:/* Rx Ram Buffer 1 */
3945 case 20 ... 21: /* Tx Ram Buffer 1 */
3946 case 24: /* Rx MAC Fifo 1 */
3947 case 26: /* Tx MAC Fifo 1 */
3948 case 28 ... 29: /* Descriptor and status unit */
3949 case 30: /* GPHY 1*/
3950 case 32 ... 39: /* Pattern Ram 1 */
3951 case 48: case 50: /* TCP Segmentation 1 */
3952 case 56 ... 60: /* PCI space */
3953 case 80 ... 84: /* GMAC 1 */
3962 * Returns copy of control register region
3963 * Note: ethtool_get_regs always provides full size (16k) buffer
3965 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
3968 const struct sky2_port *sky2 = netdev_priv(dev);
3969 const void __iomem *io = sky2->hw->regs;
3974 for (b = 0; b < 128; b++) {
3975 /* skip poisonous diagnostic ram region in block 3 */
3977 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
3978 else if (sky2_reg_access_ok(sky2->hw, b))
3979 memcpy_fromio(p, io, 128);
3988 /* In order to do Jumbo packets on these chips, need to turn off the
3989 * transmit store/forward. Therefore checksum offload won't work.
3991 static int no_tx_offload(struct net_device *dev)
3993 const struct sky2_port *sky2 = netdev_priv(dev);
3994 const struct sky2_hw *hw = sky2->hw;
3996 return dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U;
3999 static int sky2_set_tx_csum(struct net_device *dev, u32 data)
4001 if (data && no_tx_offload(dev))
4004 return ethtool_op_set_tx_csum(dev, data);
4008 static int sky2_set_tso(struct net_device *dev, u32 data)
4010 if (data && no_tx_offload(dev))
4013 return ethtool_op_set_tso(dev, data);
4016 static int sky2_get_eeprom_len(struct net_device *dev)
4018 struct sky2_port *sky2 = netdev_priv(dev);
4019 struct sky2_hw *hw = sky2->hw;
4022 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4023 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4026 static int sky2_vpd_wait(const struct sky2_hw *hw, int cap, u16 busy)
4028 unsigned long start = jiffies;
4030 while ( (sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F) == busy) {
4031 /* Can take up to 10.6 ms for write */
4032 if (time_after(jiffies, start + HZ/4)) {
4033 dev_err(&hw->pdev->dev, "VPD cycle timed out\n");
4042 static int sky2_vpd_read(struct sky2_hw *hw, int cap, void *data,
4043 u16 offset, size_t length)
4047 while (length > 0) {
4050 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
4051 rc = sky2_vpd_wait(hw, cap, 0);
4055 val = sky2_pci_read32(hw, cap + PCI_VPD_DATA);
4057 memcpy(data, &val, min(sizeof(val), length));
4058 offset += sizeof(u32);
4059 data += sizeof(u32);
4060 length -= sizeof(u32);
4066 static int sky2_vpd_write(struct sky2_hw *hw, int cap, const void *data,
4067 u16 offset, unsigned int length)
4072 for (i = 0; i < length; i += sizeof(u32)) {
4073 u32 val = *(u32 *)(data + i);
4075 sky2_pci_write32(hw, cap + PCI_VPD_DATA, val);
4076 sky2_pci_write32(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
4078 rc = sky2_vpd_wait(hw, cap, PCI_VPD_ADDR_F);
4085 static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4088 struct sky2_port *sky2 = netdev_priv(dev);
4089 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4094 eeprom->magic = SKY2_EEPROM_MAGIC;
4096 return sky2_vpd_read(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4099 static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4102 struct sky2_port *sky2 = netdev_priv(dev);
4103 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4108 if (eeprom->magic != SKY2_EEPROM_MAGIC)
4111 /* Partial writes not supported */
4112 if ((eeprom->offset & 3) || (eeprom->len & 3))
4115 return sky2_vpd_write(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4119 static const struct ethtool_ops sky2_ethtool_ops = {
4120 .get_settings = sky2_get_settings,
4121 .set_settings = sky2_set_settings,
4122 .get_drvinfo = sky2_get_drvinfo,
4123 .get_wol = sky2_get_wol,
4124 .set_wol = sky2_set_wol,
4125 .get_msglevel = sky2_get_msglevel,
4126 .set_msglevel = sky2_set_msglevel,
4127 .nway_reset = sky2_nway_reset,
4128 .get_regs_len = sky2_get_regs_len,
4129 .get_regs = sky2_get_regs,
4130 .get_link = ethtool_op_get_link,
4131 .get_eeprom_len = sky2_get_eeprom_len,
4132 .get_eeprom = sky2_get_eeprom,
4133 .set_eeprom = sky2_set_eeprom,
4134 .set_sg = ethtool_op_set_sg,
4135 .set_tx_csum = sky2_set_tx_csum,
4136 .set_tso = sky2_set_tso,
4137 .get_rx_csum = sky2_get_rx_csum,
4138 .set_rx_csum = sky2_set_rx_csum,
4139 .get_strings = sky2_get_strings,
4140 .get_coalesce = sky2_get_coalesce,
4141 .set_coalesce = sky2_set_coalesce,
4142 .get_ringparam = sky2_get_ringparam,
4143 .set_ringparam = sky2_set_ringparam,
4144 .get_pauseparam = sky2_get_pauseparam,
4145 .set_pauseparam = sky2_set_pauseparam,
4146 .phys_id = sky2_phys_id,
4147 .get_sset_count = sky2_get_sset_count,
4148 .get_ethtool_stats = sky2_get_ethtool_stats,
4151 #ifdef CONFIG_SKY2_DEBUG
4153 static struct dentry *sky2_debug;
4157 * Read and parse the first part of Vital Product Data
4159 #define VPD_SIZE 128
4160 #define VPD_MAGIC 0x82
4162 static const struct vpd_tag {
4166 { "PN", "Part Number" },
4167 { "EC", "Engineering Level" },
4168 { "MN", "Manufacturer" },
4169 { "SN", "Serial Number" },
4170 { "YA", "Asset Tag" },
4171 { "VL", "First Error Log Message" },
4172 { "VF", "Second Error Log Message" },
4173 { "VB", "Boot Agent ROM Configuration" },
4174 { "VE", "EFI UNDI Configuration" },
4177 static void sky2_show_vpd(struct seq_file *seq, struct sky2_hw *hw)
4185 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4186 vpd_size = 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4188 seq_printf(seq, "%s Product Data\n", pci_name(hw->pdev));
4189 buf = kmalloc(vpd_size, GFP_KERNEL);
4191 seq_puts(seq, "no memory!\n");
4195 if (pci_read_vpd(hw->pdev, 0, vpd_size, buf) < 0) {
4196 seq_puts(seq, "VPD read failed\n");
4200 if (buf[0] != VPD_MAGIC) {
4201 seq_printf(seq, "VPD tag mismatch: %#x\n", buf[0]);
4205 if (len == 0 || len > vpd_size - 4) {
4206 seq_printf(seq, "Invalid id length: %d\n", len);
4210 seq_printf(seq, "%.*s\n", len, buf + 3);
4213 while (offs < vpd_size - 4) {
4216 if (!memcmp("RW", buf + offs, 2)) /* end marker */
4218 len = buf[offs + 2];
4219 if (offs + len + 3 >= vpd_size)
4222 for (i = 0; i < ARRAY_SIZE(vpd_tags); i++) {
4223 if (!memcmp(vpd_tags[i].tag, buf + offs, 2)) {
4224 seq_printf(seq, " %s: %.*s\n",
4225 vpd_tags[i].label, len, buf + offs + 3);
4235 static int sky2_debug_show(struct seq_file *seq, void *v)
4237 struct net_device *dev = seq->private;
4238 const struct sky2_port *sky2 = netdev_priv(dev);
4239 struct sky2_hw *hw = sky2->hw;
4240 unsigned port = sky2->port;
4244 sky2_show_vpd(seq, hw);
4246 seq_printf(seq, "\nIRQ src=%x mask=%x control=%x\n",
4247 sky2_read32(hw, B0_ISRC),
4248 sky2_read32(hw, B0_IMSK),
4249 sky2_read32(hw, B0_Y2_SP_ICR));
4251 if (!netif_running(dev)) {
4252 seq_printf(seq, "network not running\n");
4256 napi_disable(&hw->napi);
4257 last = sky2_read16(hw, STAT_PUT_IDX);
4259 if (hw->st_idx == last)
4260 seq_puts(seq, "Status ring (empty)\n");
4262 seq_puts(seq, "Status ring\n");
4263 for (idx = hw->st_idx; idx != last && idx < STATUS_RING_SIZE;
4264 idx = RING_NEXT(idx, STATUS_RING_SIZE)) {
4265 const struct sky2_status_le *le = hw->st_le + idx;
4266 seq_printf(seq, "[%d] %#x %d %#x\n",
4267 idx, le->opcode, le->length, le->status);
4269 seq_puts(seq, "\n");
4272 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
4273 sky2->tx_cons, sky2->tx_prod,
4274 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
4275 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
4277 /* Dump contents of tx ring */
4279 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < sky2->tx_ring_size;
4280 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
4281 const struct sky2_tx_le *le = sky2->tx_le + idx;
4282 u32 a = le32_to_cpu(le->addr);
4285 seq_printf(seq, "%u:", idx);
4288 switch(le->opcode & ~HW_OWNER) {
4290 seq_printf(seq, " %#x:", a);
4293 seq_printf(seq, " mtu=%d", a);
4296 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
4299 seq_printf(seq, " csum=%#x", a);
4302 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
4305 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
4308 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
4311 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
4312 a, le16_to_cpu(le->length));
4315 if (le->ctrl & EOP) {
4316 seq_putc(seq, '\n');
4321 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
4322 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
4323 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
4324 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
4326 sky2_read32(hw, B0_Y2_SP_LISR);
4327 napi_enable(&hw->napi);
4331 static int sky2_debug_open(struct inode *inode, struct file *file)
4333 return single_open(file, sky2_debug_show, inode->i_private);
4336 static const struct file_operations sky2_debug_fops = {
4337 .owner = THIS_MODULE,
4338 .open = sky2_debug_open,
4340 .llseek = seq_lseek,
4341 .release = single_release,
4345 * Use network device events to create/remove/rename
4346 * debugfs file entries
4348 static int sky2_device_event(struct notifier_block *unused,
4349 unsigned long event, void *ptr)
4351 struct net_device *dev = ptr;
4352 struct sky2_port *sky2 = netdev_priv(dev);
4354 if (dev->netdev_ops->ndo_open != sky2_up || !sky2_debug)
4358 case NETDEV_CHANGENAME:
4359 if (sky2->debugfs) {
4360 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
4361 sky2_debug, dev->name);
4365 case NETDEV_GOING_DOWN:
4366 if (sky2->debugfs) {
4367 netdev_printk(KERN_DEBUG, dev, "remove debugfs\n");
4368 debugfs_remove(sky2->debugfs);
4369 sky2->debugfs = NULL;
4374 sky2->debugfs = debugfs_create_file(dev->name, S_IRUGO,
4377 if (IS_ERR(sky2->debugfs))
4378 sky2->debugfs = NULL;
4384 static struct notifier_block sky2_notifier = {
4385 .notifier_call = sky2_device_event,
4389 static __init void sky2_debug_init(void)
4393 ent = debugfs_create_dir("sky2", NULL);
4394 if (!ent || IS_ERR(ent))
4398 register_netdevice_notifier(&sky2_notifier);
4401 static __exit void sky2_debug_cleanup(void)
4404 unregister_netdevice_notifier(&sky2_notifier);
4405 debugfs_remove(sky2_debug);
4411 #define sky2_debug_init()
4412 #define sky2_debug_cleanup()
4415 /* Two copies of network device operations to handle special case of
4416 not allowing netpoll on second port */
4417 static const struct net_device_ops sky2_netdev_ops[2] = {
4419 .ndo_open = sky2_up,
4420 .ndo_stop = sky2_down,
4421 .ndo_start_xmit = sky2_xmit_frame,
4422 .ndo_do_ioctl = sky2_ioctl,
4423 .ndo_validate_addr = eth_validate_addr,
4424 .ndo_set_mac_address = sky2_set_mac_address,
4425 .ndo_set_multicast_list = sky2_set_multicast,
4426 .ndo_change_mtu = sky2_change_mtu,
4427 .ndo_tx_timeout = sky2_tx_timeout,
4428 #ifdef SKY2_VLAN_TAG_USED
4429 .ndo_vlan_rx_register = sky2_vlan_rx_register,
4431 #ifdef CONFIG_NET_POLL_CONTROLLER
4432 .ndo_poll_controller = sky2_netpoll,
4436 .ndo_open = sky2_up,
4437 .ndo_stop = sky2_down,
4438 .ndo_start_xmit = sky2_xmit_frame,
4439 .ndo_do_ioctl = sky2_ioctl,
4440 .ndo_validate_addr = eth_validate_addr,
4441 .ndo_set_mac_address = sky2_set_mac_address,
4442 .ndo_set_multicast_list = sky2_set_multicast,
4443 .ndo_change_mtu = sky2_change_mtu,
4444 .ndo_tx_timeout = sky2_tx_timeout,
4445 #ifdef SKY2_VLAN_TAG_USED
4446 .ndo_vlan_rx_register = sky2_vlan_rx_register,
4451 /* Initialize network device */
4452 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
4454 int highmem, int wol)
4456 struct sky2_port *sky2;
4457 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
4460 dev_err(&hw->pdev->dev, "etherdev alloc failed\n");
4464 SET_NETDEV_DEV(dev, &hw->pdev->dev);
4465 dev->irq = hw->pdev->irq;
4466 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
4467 dev->watchdog_timeo = TX_WATCHDOG;
4468 dev->netdev_ops = &sky2_netdev_ops[port];
4470 sky2 = netdev_priv(dev);
4473 sky2->msg_enable = netif_msg_init(debug, default_msg);
4475 /* Auto speed and flow control */
4476 sky2->flags = SKY2_FLAG_AUTO_SPEED | SKY2_FLAG_AUTO_PAUSE;
4477 if (hw->chip_id != CHIP_ID_YUKON_XL)
4478 sky2->flags |= SKY2_FLAG_RX_CHECKSUM;
4480 sky2->flow_mode = FC_BOTH;
4484 sky2->advertising = sky2_supported_modes(hw);
4487 spin_lock_init(&sky2->phy_lock);
4489 sky2->tx_pending = TX_DEF_PENDING;
4490 sky2->tx_ring_size = roundup_pow_of_two(TX_DEF_PENDING+1);
4491 sky2->rx_pending = RX_DEF_PENDING;
4493 hw->dev[port] = dev;
4497 dev->features |= NETIF_F_TSO | NETIF_F_IP_CSUM | NETIF_F_SG;
4499 dev->features |= NETIF_F_HIGHDMA;
4501 #ifdef SKY2_VLAN_TAG_USED
4502 /* The workaround for FE+ status conflicts with VLAN tag detection. */
4503 if (!(sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
4504 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0)) {
4505 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
4509 /* read the mac address */
4510 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
4511 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
4516 static void __devinit sky2_show_addr(struct net_device *dev)
4518 const struct sky2_port *sky2 = netdev_priv(dev);
4520 netif_info(sky2, probe, dev, "addr %pM\n", dev->dev_addr);
4523 /* Handle software interrupt used during MSI test */
4524 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
4526 struct sky2_hw *hw = dev_id;
4527 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4532 if (status & Y2_IS_IRQ_SW) {
4533 hw->flags |= SKY2_HW_USE_MSI;
4534 wake_up(&hw->msi_wait);
4535 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4537 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4542 /* Test interrupt path by forcing a a software IRQ */
4543 static int __devinit sky2_test_msi(struct sky2_hw *hw)
4545 struct pci_dev *pdev = hw->pdev;
4548 init_waitqueue_head (&hw->msi_wait);
4550 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4552 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4554 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4558 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4559 sky2_read8(hw, B0_CTST);
4561 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4563 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4564 /* MSI test failed, go back to INTx mode */
4565 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4566 "switching to INTx mode.\n");
4569 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4572 sky2_write32(hw, B0_IMSK, 0);
4573 sky2_read32(hw, B0_IMSK);
4575 free_irq(pdev->irq, hw);
4580 /* This driver supports yukon2 chipset only */
4581 static const char *sky2_name(u8 chipid, char *buf, int sz)
4583 const char *name[] = {
4585 "EC Ultra", /* 0xb4 */
4586 "Extreme", /* 0xb5 */
4590 "Supreme", /* 0xb9 */
4592 "Unknown", /* 0xbb */
4593 "Optima", /* 0xbc */
4596 if (chipid >= CHIP_ID_YUKON_XL && chipid <= CHIP_ID_YUKON_OPT)
4597 strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
4599 snprintf(buf, sz, "(chip %#x)", chipid);
4603 static int __devinit sky2_probe(struct pci_dev *pdev,
4604 const struct pci_device_id *ent)
4606 struct net_device *dev;
4608 int err, using_dac = 0, wol_default;
4612 err = pci_enable_device(pdev);
4614 dev_err(&pdev->dev, "cannot enable PCI device\n");
4618 /* Get configuration information
4619 * Note: only regular PCI config access once to test for HW issues
4620 * other PCI access through shared memory for speed and to
4621 * avoid MMCONFIG problems.
4623 err = pci_read_config_dword(pdev, PCI_DEV_REG2, ®);
4625 dev_err(&pdev->dev, "PCI read config failed\n");
4630 dev_err(&pdev->dev, "PCI configuration read error\n");
4634 err = pci_request_regions(pdev, DRV_NAME);
4636 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4637 goto err_out_disable;
4640 pci_set_master(pdev);
4642 if (sizeof(dma_addr_t) > sizeof(u32) &&
4643 !(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))) {
4645 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4647 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4648 "for consistent allocations\n");
4649 goto err_out_free_regions;
4652 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4654 dev_err(&pdev->dev, "no usable DMA configuration\n");
4655 goto err_out_free_regions;
4661 /* The sk98lin vendor driver uses hardware byte swapping but
4662 * this driver uses software swapping.
4664 reg &= ~PCI_REV_DESC;
4665 err = pci_write_config_dword(pdev,PCI_DEV_REG2, reg);
4667 dev_err(&pdev->dev, "PCI write config failed\n");
4668 goto err_out_free_regions;
4672 wol_default = device_may_wakeup(&pdev->dev) ? WAKE_MAGIC : 0;
4676 hw = kzalloc(sizeof(*hw) + strlen(DRV_NAME "@pci:")
4677 + strlen(pci_name(pdev)) + 1, GFP_KERNEL);
4679 dev_err(&pdev->dev, "cannot allocate hardware struct\n");
4680 goto err_out_free_regions;
4684 sprintf(hw->irq_name, DRV_NAME "@pci:%s", pci_name(pdev));
4686 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
4688 dev_err(&pdev->dev, "cannot map device registers\n");
4689 goto err_out_free_hw;
4692 /* ring for status responses */
4693 hw->st_le = pci_alloc_consistent(pdev, STATUS_LE_BYTES, &hw->st_dma);
4695 goto err_out_iounmap;
4697 err = sky2_init(hw);
4699 goto err_out_iounmap;
4701 dev_info(&pdev->dev, "Yukon-2 %s chip revision %d\n",
4702 sky2_name(hw->chip_id, buf1, sizeof(buf1)), hw->chip_rev);
4706 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
4709 goto err_out_free_pci;
4712 if (!disable_msi && pci_enable_msi(pdev) == 0) {
4713 err = sky2_test_msi(hw);
4714 if (err == -EOPNOTSUPP)
4715 pci_disable_msi(pdev);
4717 goto err_out_free_netdev;
4720 err = register_netdev(dev);
4722 dev_err(&pdev->dev, "cannot register net device\n");
4723 goto err_out_free_netdev;
4726 netif_carrier_off(dev);
4728 netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
4730 err = request_irq(pdev->irq, sky2_intr,
4731 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
4734 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4735 goto err_out_unregister;
4737 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4738 napi_enable(&hw->napi);
4740 sky2_show_addr(dev);
4742 if (hw->ports > 1) {
4743 struct net_device *dev1;
4746 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
4747 if (dev1 && (err = register_netdev(dev1)) == 0)
4748 sky2_show_addr(dev1);
4750 dev_warn(&pdev->dev,
4751 "register of second port failed (%d)\n", err);
4759 setup_timer(&hw->watchdog_timer, sky2_watchdog, (unsigned long) hw);
4760 INIT_WORK(&hw->restart_work, sky2_restart);
4762 pci_set_drvdata(pdev, hw);
4763 pdev->d3_delay = 150;
4768 if (hw->flags & SKY2_HW_USE_MSI)
4769 pci_disable_msi(pdev);
4770 unregister_netdev(dev);
4771 err_out_free_netdev:
4774 sky2_write8(hw, B0_CTST, CS_RST_SET);
4775 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4780 err_out_free_regions:
4781 pci_release_regions(pdev);
4783 pci_disable_device(pdev);
4785 pci_set_drvdata(pdev, NULL);
4789 static void __devexit sky2_remove(struct pci_dev *pdev)
4791 struct sky2_hw *hw = pci_get_drvdata(pdev);
4797 del_timer_sync(&hw->watchdog_timer);
4798 cancel_work_sync(&hw->restart_work);
4800 for (i = hw->ports-1; i >= 0; --i)
4801 unregister_netdev(hw->dev[i]);
4803 sky2_write32(hw, B0_IMSK, 0);
4807 sky2_write8(hw, B0_CTST, CS_RST_SET);
4808 sky2_read8(hw, B0_CTST);
4810 free_irq(pdev->irq, hw);
4811 if (hw->flags & SKY2_HW_USE_MSI)
4812 pci_disable_msi(pdev);
4813 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4814 pci_release_regions(pdev);
4815 pci_disable_device(pdev);
4817 for (i = hw->ports-1; i >= 0; --i)
4818 free_netdev(hw->dev[i]);
4823 pci_set_drvdata(pdev, NULL);
4826 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
4828 struct sky2_hw *hw = pci_get_drvdata(pdev);
4834 del_timer_sync(&hw->watchdog_timer);
4835 cancel_work_sync(&hw->restart_work);
4838 for (i = 0; i < hw->ports; i++) {
4839 struct net_device *dev = hw->dev[i];
4840 struct sky2_port *sky2 = netdev_priv(dev);
4845 sky2_wol_init(sky2);
4850 device_set_wakeup_enable(&pdev->dev, wol != 0);
4852 sky2_write32(hw, B0_IMSK, 0);
4853 napi_disable(&hw->napi);
4857 pci_save_state(pdev);
4858 pci_enable_wake(pdev, pci_choose_state(pdev, state), wol);
4859 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4865 static int sky2_resume(struct pci_dev *pdev)
4867 struct sky2_hw *hw = pci_get_drvdata(pdev);
4874 err = pci_set_power_state(pdev, PCI_D0);
4878 err = pci_restore_state(pdev);
4882 pci_enable_wake(pdev, PCI_D0, 0);
4884 /* Re-enable all clocks */
4885 err = pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
4887 dev_err(&pdev->dev, "PCI write config failed\n");
4892 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4893 napi_enable(&hw->napi);
4895 for (i = 0; i < hw->ports; i++) {
4896 err = sky2_reattach(hw->dev[i]);
4906 dev_err(&pdev->dev, "resume failed (%d)\n", err);
4907 pci_disable_device(pdev);
4912 static void sky2_shutdown(struct pci_dev *pdev)
4914 sky2_suspend(pdev, PMSG_SUSPEND);
4917 static struct pci_driver sky2_driver = {
4919 .id_table = sky2_id_table,
4920 .probe = sky2_probe,
4921 .remove = __devexit_p(sky2_remove),
4923 .suspend = sky2_suspend,
4924 .resume = sky2_resume,
4926 .shutdown = sky2_shutdown,
4929 static int __init sky2_init_module(void)
4931 pr_info("driver version " DRV_VERSION "\n");
4934 return pci_register_driver(&sky2_driver);
4937 static void __exit sky2_cleanup_module(void)
4939 pci_unregister_driver(&sky2_driver);
4940 sky2_debug_cleanup();
4943 module_init(sky2_init_module);
4944 module_exit(sky2_cleanup_module);
4946 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
4947 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
4948 MODULE_LICENSE("GPL");
4949 MODULE_VERSION(DRV_VERSION);