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>
35 #include <linux/interrupt.h>
37 #include <linux/slab.h>
39 #include <linux/tcp.h>
41 #include <linux/delay.h>
42 #include <linux/workqueue.h>
43 #include <linux/if_vlan.h>
44 #include <linux/prefetch.h>
45 #include <linux/debugfs.h>
46 #include <linux/mii.h>
52 #define DRV_NAME "sky2"
53 #define DRV_VERSION "1.30"
56 * The Yukon II chipset takes 64 bit command blocks (called list elements)
57 * that are organized into three (receive, transmit, status) different rings
61 #define RX_LE_SIZE 1024
62 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
63 #define RX_MAX_PENDING (RX_LE_SIZE/6 - 2)
64 #define RX_DEF_PENDING RX_MAX_PENDING
66 /* This is the worst case number of transmit list elements for a single skb:
67 VLAN:GSO + CKSUM + Data + skb_frags * DMA */
68 #define MAX_SKB_TX_LE (2 + (sizeof(dma_addr_t)/sizeof(u32))*(MAX_SKB_FRAGS+1))
69 #define TX_MIN_PENDING (MAX_SKB_TX_LE+1)
70 #define TX_MAX_PENDING 1024
71 #define TX_DEF_PENDING 63
73 #define TX_WATCHDOG (5 * HZ)
74 #define NAPI_WEIGHT 64
75 #define PHY_RETRIES 1000
77 #define SKY2_EEPROM_MAGIC 0x9955aabb
79 #define RING_NEXT(x, s) (((x)+1) & ((s)-1))
81 static const u32 default_msg =
82 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
83 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
84 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
86 static int debug = -1; /* defaults above */
87 module_param(debug, int, 0);
88 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
90 static int copybreak __read_mostly = 128;
91 module_param(copybreak, int, 0);
92 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
94 static int disable_msi = 0;
95 module_param(disable_msi, int, 0);
96 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
98 static int legacy_pme = 0;
99 module_param(legacy_pme, int, 0);
100 MODULE_PARM_DESC(legacy_pme, "Legacy power management");
102 static DEFINE_PCI_DEVICE_TABLE(sky2_id_table) = {
103 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
104 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
105 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E01) }, /* SK-9E21M */
106 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
107 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
108 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
109 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B03) }, /* DGE-550T */
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4354) }, /* 88E8040 */
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4355) }, /* 88E8040T */
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4356) }, /* 88EC033 */
125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4357) }, /* 88E8042 */
126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x435A) }, /* 88E8048 */
127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) }, /* 88E8052 */
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) }, /* 88E8050 */
129 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) }, /* 88E8053 */
130 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) }, /* 88E8055 */
131 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) }, /* 88E8056 */
132 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4365) }, /* 88E8070 */
133 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) }, /* 88EC036 */
134 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) }, /* 88EC032 */
135 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) }, /* 88EC034 */
136 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4369) }, /* 88EC042 */
137 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436A) }, /* 88E8058 */
138 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436B) }, /* 88E8071 */
139 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436C) }, /* 88E8072 */
140 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436D) }, /* 88E8055 */
141 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4370) }, /* 88E8075 */
142 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4380) }, /* 88E8057 */
143 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4381) }, /* 88E8059 */
147 MODULE_DEVICE_TABLE(pci, sky2_id_table);
149 /* Avoid conditionals by using array */
150 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
151 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
152 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
154 static void sky2_set_multicast(struct net_device *dev);
155 static irqreturn_t sky2_intr(int irq, void *dev_id);
157 /* Access to PHY via serial interconnect */
158 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
162 gma_write16(hw, port, GM_SMI_DATA, val);
163 gma_write16(hw, port, GM_SMI_CTRL,
164 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
166 for (i = 0; i < PHY_RETRIES; i++) {
167 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
171 if (!(ctrl & GM_SMI_CT_BUSY))
177 dev_warn(&hw->pdev->dev, "%s: phy write timeout\n", hw->dev[port]->name);
181 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
185 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
189 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
190 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
192 for (i = 0; i < PHY_RETRIES; i++) {
193 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
197 if (ctrl & GM_SMI_CT_RD_VAL) {
198 *val = gma_read16(hw, port, GM_SMI_DATA);
205 dev_warn(&hw->pdev->dev, "%s: phy read timeout\n", hw->dev[port]->name);
208 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
212 static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
215 __gm_phy_read(hw, port, reg, &v);
220 static void sky2_power_on(struct sky2_hw *hw)
222 /* switch power to VCC (WA for VAUX problem) */
223 sky2_write8(hw, B0_POWER_CTRL,
224 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
226 /* disable Core Clock Division, */
227 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
229 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
230 /* enable bits are inverted */
231 sky2_write8(hw, B2_Y2_CLK_GATE,
232 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
233 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
234 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
236 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
238 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
241 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
243 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
244 /* set all bits to 0 except bits 15..12 and 8 */
245 reg &= P_ASPM_CONTROL_MSK;
246 sky2_pci_write32(hw, PCI_DEV_REG4, reg);
248 reg = sky2_pci_read32(hw, PCI_DEV_REG5);
249 /* set all bits to 0 except bits 28 & 27 */
250 reg &= P_CTL_TIM_VMAIN_AV_MSK;
251 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
253 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
255 sky2_write16(hw, B0_CTST, Y2_HW_WOL_ON);
257 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
258 reg = sky2_read32(hw, B2_GP_IO);
259 reg |= GLB_GPIO_STAT_RACE_DIS;
260 sky2_write32(hw, B2_GP_IO, reg);
262 sky2_read32(hw, B2_GP_IO);
265 /* Turn on "driver loaded" LED */
266 sky2_write16(hw, B0_CTST, Y2_LED_STAT_ON);
269 static void sky2_power_aux(struct sky2_hw *hw)
271 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
272 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
274 /* enable bits are inverted */
275 sky2_write8(hw, B2_Y2_CLK_GATE,
276 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
277 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
278 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
280 /* switch power to VAUX if supported and PME from D3cold */
281 if ( (sky2_read32(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
282 pci_pme_capable(hw->pdev, PCI_D3cold))
283 sky2_write8(hw, B0_POWER_CTRL,
284 (PC_VAUX_ENA | PC_VCC_ENA |
285 PC_VAUX_ON | PC_VCC_OFF));
287 /* turn off "driver loaded LED" */
288 sky2_write16(hw, B0_CTST, Y2_LED_STAT_OFF);
291 static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
295 /* disable all GMAC IRQ's */
296 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
298 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
299 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
300 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
301 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
303 reg = gma_read16(hw, port, GM_RX_CTRL);
304 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
305 gma_write16(hw, port, GM_RX_CTRL, reg);
308 /* flow control to advertise bits */
309 static const u16 copper_fc_adv[] = {
311 [FC_TX] = PHY_M_AN_ASP,
312 [FC_RX] = PHY_M_AN_PC,
313 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
316 /* flow control to advertise bits when using 1000BaseX */
317 static const u16 fiber_fc_adv[] = {
318 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
319 [FC_TX] = PHY_M_P_ASYM_MD_X,
320 [FC_RX] = PHY_M_P_SYM_MD_X,
321 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
324 /* flow control to GMA disable bits */
325 static const u16 gm_fc_disable[] = {
326 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
327 [FC_TX] = GM_GPCR_FC_RX_DIS,
328 [FC_RX] = GM_GPCR_FC_TX_DIS,
333 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
335 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
336 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
338 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
339 !(hw->flags & SKY2_HW_NEWER_PHY)) {
340 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
342 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
344 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
346 /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
347 if (hw->chip_id == CHIP_ID_YUKON_EC)
348 /* set downshift counter to 3x and enable downshift */
349 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
351 /* set master & slave downshift counter to 1x */
352 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
354 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
357 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
358 if (sky2_is_copper(hw)) {
359 if (!(hw->flags & SKY2_HW_GIGABIT)) {
360 /* enable automatic crossover */
361 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
363 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
364 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
367 /* Enable Class A driver for FE+ A0 */
368 spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2);
369 spec |= PHY_M_FESC_SEL_CL_A;
370 gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec);
373 /* disable energy detect */
374 ctrl &= ~PHY_M_PC_EN_DET_MSK;
376 /* enable automatic crossover */
377 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
379 /* downshift on PHY 88E1112 and 88E1149 is changed */
380 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
381 (hw->flags & SKY2_HW_NEWER_PHY)) {
382 /* set downshift counter to 3x and enable downshift */
383 ctrl &= ~PHY_M_PC_DSC_MSK;
384 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
388 /* workaround for deviation #4.88 (CRC errors) */
389 /* disable Automatic Crossover */
391 ctrl &= ~PHY_M_PC_MDIX_MSK;
394 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
396 /* special setup for PHY 88E1112 Fiber */
397 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
398 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
400 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
401 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
402 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
403 ctrl &= ~PHY_M_MAC_MD_MSK;
404 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
405 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
407 if (hw->pmd_type == 'P') {
408 /* select page 1 to access Fiber registers */
409 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
411 /* for SFP-module set SIGDET polarity to low */
412 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
413 ctrl |= PHY_M_FIB_SIGD_POL;
414 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
417 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
425 if (sky2->flags & SKY2_FLAG_AUTO_SPEED) {
426 if (sky2_is_copper(hw)) {
427 if (sky2->advertising & ADVERTISED_1000baseT_Full)
428 ct1000 |= PHY_M_1000C_AFD;
429 if (sky2->advertising & ADVERTISED_1000baseT_Half)
430 ct1000 |= PHY_M_1000C_AHD;
431 if (sky2->advertising & ADVERTISED_100baseT_Full)
432 adv |= PHY_M_AN_100_FD;
433 if (sky2->advertising & ADVERTISED_100baseT_Half)
434 adv |= PHY_M_AN_100_HD;
435 if (sky2->advertising & ADVERTISED_10baseT_Full)
436 adv |= PHY_M_AN_10_FD;
437 if (sky2->advertising & ADVERTISED_10baseT_Half)
438 adv |= PHY_M_AN_10_HD;
440 } else { /* special defines for FIBER (88E1040S only) */
441 if (sky2->advertising & ADVERTISED_1000baseT_Full)
442 adv |= PHY_M_AN_1000X_AFD;
443 if (sky2->advertising & ADVERTISED_1000baseT_Half)
444 adv |= PHY_M_AN_1000X_AHD;
447 /* Restart Auto-negotiation */
448 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
450 /* forced speed/duplex settings */
451 ct1000 = PHY_M_1000C_MSE;
453 /* Disable auto update for duplex flow control and duplex */
454 reg |= GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_SPD_DIS;
456 switch (sky2->speed) {
458 ctrl |= PHY_CT_SP1000;
459 reg |= GM_GPCR_SPEED_1000;
462 ctrl |= PHY_CT_SP100;
463 reg |= GM_GPCR_SPEED_100;
467 if (sky2->duplex == DUPLEX_FULL) {
468 reg |= GM_GPCR_DUP_FULL;
469 ctrl |= PHY_CT_DUP_MD;
470 } else if (sky2->speed < SPEED_1000)
471 sky2->flow_mode = FC_NONE;
474 if (sky2->flags & SKY2_FLAG_AUTO_PAUSE) {
475 if (sky2_is_copper(hw))
476 adv |= copper_fc_adv[sky2->flow_mode];
478 adv |= fiber_fc_adv[sky2->flow_mode];
480 reg |= GM_GPCR_AU_FCT_DIS;
481 reg |= gm_fc_disable[sky2->flow_mode];
483 /* Forward pause packets to GMAC? */
484 if (sky2->flow_mode & FC_RX)
485 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
487 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
490 gma_write16(hw, port, GM_GP_CTRL, reg);
492 if (hw->flags & SKY2_HW_GIGABIT)
493 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
495 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
496 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
498 /* Setup Phy LED's */
499 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
502 switch (hw->chip_id) {
503 case CHIP_ID_YUKON_FE:
504 /* on 88E3082 these bits are at 11..9 (shifted left) */
505 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
507 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
509 /* delete ACT LED control bits */
510 ctrl &= ~PHY_M_FELP_LED1_MSK;
511 /* change ACT LED control to blink mode */
512 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
513 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
516 case CHIP_ID_YUKON_FE_P:
517 /* Enable Link Partner Next Page */
518 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
519 ctrl |= PHY_M_PC_ENA_LIP_NP;
521 /* disable Energy Detect and enable scrambler */
522 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
523 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
525 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
526 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
527 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
528 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
530 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
533 case CHIP_ID_YUKON_XL:
534 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
536 /* select page 3 to access LED control register */
537 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
539 /* set LED Function Control register */
540 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
541 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
542 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
543 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
544 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
546 /* set Polarity Control register */
547 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
548 (PHY_M_POLC_LS1_P_MIX(4) |
549 PHY_M_POLC_IS0_P_MIX(4) |
550 PHY_M_POLC_LOS_CTRL(2) |
551 PHY_M_POLC_INIT_CTRL(2) |
552 PHY_M_POLC_STA1_CTRL(2) |
553 PHY_M_POLC_STA0_CTRL(2)));
555 /* restore page register */
556 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
559 case CHIP_ID_YUKON_EC_U:
560 case CHIP_ID_YUKON_EX:
561 case CHIP_ID_YUKON_SUPR:
562 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
564 /* select page 3 to access LED control register */
565 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
567 /* set LED Function Control register */
568 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
569 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
570 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
571 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
572 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
574 /* set Blink Rate in LED Timer Control Register */
575 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
576 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
577 /* restore page register */
578 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
582 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
583 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
585 /* turn off the Rx LED (LED_RX) */
586 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
589 if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_UL_2) {
590 /* apply fixes in PHY AFE */
591 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
593 /* increase differential signal amplitude in 10BASE-T */
594 gm_phy_write(hw, port, 0x18, 0xaa99);
595 gm_phy_write(hw, port, 0x17, 0x2011);
597 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
598 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
599 gm_phy_write(hw, port, 0x18, 0xa204);
600 gm_phy_write(hw, port, 0x17, 0x2002);
603 /* set page register to 0 */
604 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
605 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
606 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
607 /* apply workaround for integrated resistors calibration */
608 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
609 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
610 } else if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
611 /* apply fixes in PHY AFE */
612 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00ff);
614 /* apply RDAC termination workaround */
615 gm_phy_write(hw, port, 24, 0x2800);
616 gm_phy_write(hw, port, 23, 0x2001);
618 /* set page register back to 0 */
619 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
620 } else if (hw->chip_id != CHIP_ID_YUKON_EX &&
621 hw->chip_id < CHIP_ID_YUKON_SUPR) {
622 /* no effect on Yukon-XL */
623 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
625 if (!(sky2->flags & SKY2_FLAG_AUTO_SPEED) ||
626 sky2->speed == SPEED_100) {
627 /* turn on 100 Mbps LED (LED_LINK100) */
628 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
632 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
634 } else if (hw->chip_id == CHIP_ID_YUKON_PRM &&
635 (sky2_read8(hw, B2_MAC_CFG) & 0xf) == 0x7) {
637 /* This a phy register setup workaround copied from vendor driver. */
638 static const struct {
644 /* { 0x155, 0x130b },*/
650 /* { 0x154, 0x2f39 },*/
654 /* { 0x158, 0x1223 },*/
661 /* Start Workaround for OptimaEEE Rev.Z0 */
662 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00fb);
664 gm_phy_write(hw, port, 1, 0x4099);
665 gm_phy_write(hw, port, 3, 0x1120);
666 gm_phy_write(hw, port, 11, 0x113c);
667 gm_phy_write(hw, port, 14, 0x8100);
668 gm_phy_write(hw, port, 15, 0x112a);
669 gm_phy_write(hw, port, 17, 0x1008);
671 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00fc);
672 gm_phy_write(hw, port, 1, 0x20b0);
674 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00ff);
676 for (i = 0; i < ARRAY_SIZE(eee_afe); i++) {
677 /* apply AFE settings */
678 gm_phy_write(hw, port, 17, eee_afe[i].val);
679 gm_phy_write(hw, port, 16, eee_afe[i].reg | 1u<<13);
682 /* End Workaround for OptimaEEE */
683 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
685 /* Enable 10Base-Te (EEE) */
686 if (hw->chip_id >= CHIP_ID_YUKON_PRM) {
687 reg = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
688 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL,
689 reg | PHY_M_10B_TE_ENABLE);
693 /* Enable phy interrupt on auto-negotiation complete (or link up) */
694 if (sky2->flags & SKY2_FLAG_AUTO_SPEED)
695 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
697 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
700 static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
701 static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
703 static void sky2_phy_power_up(struct sky2_hw *hw, unsigned port)
707 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
708 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
709 reg1 &= ~phy_power[port];
711 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
712 reg1 |= coma_mode[port];
714 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
715 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
716 sky2_pci_read32(hw, PCI_DEV_REG1);
718 if (hw->chip_id == CHIP_ID_YUKON_FE)
719 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_ANE);
720 else if (hw->flags & SKY2_HW_ADV_POWER_CTL)
721 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
724 static void sky2_phy_power_down(struct sky2_hw *hw, unsigned port)
729 /* release GPHY Control reset */
730 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
732 /* release GMAC reset */
733 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
735 if (hw->flags & SKY2_HW_NEWER_PHY) {
736 /* select page 2 to access MAC control register */
737 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
739 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
740 /* allow GMII Power Down */
741 ctrl &= ~PHY_M_MAC_GMIF_PUP;
742 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
744 /* set page register back to 0 */
745 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
748 /* setup General Purpose Control Register */
749 gma_write16(hw, port, GM_GP_CTRL,
750 GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 |
751 GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_FCT_DIS |
754 if (hw->chip_id != CHIP_ID_YUKON_EC) {
755 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
756 /* select page 2 to access MAC control register */
757 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
759 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
760 /* enable Power Down */
761 ctrl |= PHY_M_PC_POW_D_ENA;
762 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
764 /* set page register back to 0 */
765 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
768 /* set IEEE compatible Power Down Mode (dev. #4.99) */
769 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_PDOWN);
772 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
773 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
774 reg1 |= phy_power[port]; /* set PHY to PowerDown/COMA Mode */
775 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
776 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
779 /* configure IPG according to used link speed */
780 static void sky2_set_ipg(struct sky2_port *sky2)
784 reg = gma_read16(sky2->hw, sky2->port, GM_SERIAL_MODE);
785 reg &= ~GM_SMOD_IPG_MSK;
786 if (sky2->speed > SPEED_100)
787 reg |= IPG_DATA_VAL(IPG_DATA_DEF_1000);
789 reg |= IPG_DATA_VAL(IPG_DATA_DEF_10_100);
790 gma_write16(sky2->hw, sky2->port, GM_SERIAL_MODE, reg);
794 static void sky2_enable_rx_tx(struct sky2_port *sky2)
796 struct sky2_hw *hw = sky2->hw;
797 unsigned port = sky2->port;
800 reg = gma_read16(hw, port, GM_GP_CTRL);
801 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
802 gma_write16(hw, port, GM_GP_CTRL, reg);
805 /* Force a renegotiation */
806 static void sky2_phy_reinit(struct sky2_port *sky2)
808 spin_lock_bh(&sky2->phy_lock);
809 sky2_phy_init(sky2->hw, sky2->port);
810 sky2_enable_rx_tx(sky2);
811 spin_unlock_bh(&sky2->phy_lock);
814 /* Put device in state to listen for Wake On Lan */
815 static void sky2_wol_init(struct sky2_port *sky2)
817 struct sky2_hw *hw = sky2->hw;
818 unsigned port = sky2->port;
819 enum flow_control save_mode;
822 /* Bring hardware out of reset */
823 sky2_write16(hw, B0_CTST, CS_RST_CLR);
824 sky2_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
826 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
827 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
830 * sky2_reset will re-enable on resume
832 save_mode = sky2->flow_mode;
833 ctrl = sky2->advertising;
835 sky2->advertising &= ~(ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full);
836 sky2->flow_mode = FC_NONE;
838 spin_lock_bh(&sky2->phy_lock);
839 sky2_phy_power_up(hw, port);
840 sky2_phy_init(hw, port);
841 spin_unlock_bh(&sky2->phy_lock);
843 sky2->flow_mode = save_mode;
844 sky2->advertising = ctrl;
846 /* Set GMAC to no flow control and auto update for speed/duplex */
847 gma_write16(hw, port, GM_GP_CTRL,
848 GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
849 GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
851 /* Set WOL address */
852 memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
853 sky2->netdev->dev_addr, ETH_ALEN);
855 /* Turn on appropriate WOL control bits */
856 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
858 if (sky2->wol & WAKE_PHY)
859 ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
861 ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
863 if (sky2->wol & WAKE_MAGIC)
864 ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
866 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;
868 ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
869 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
871 /* Disable PiG firmware */
872 sky2_write16(hw, B0_CTST, Y2_HW_WOL_OFF);
874 /* Needed by some broken BIOSes, use PCI rather than PCI-e for WOL */
876 u32 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
877 reg1 |= PCI_Y2_PME_LEGACY;
878 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
882 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
883 sky2_read32(hw, B0_CTST);
886 static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
888 struct net_device *dev = hw->dev[port];
890 if ( (hw->chip_id == CHIP_ID_YUKON_EX &&
891 hw->chip_rev != CHIP_REV_YU_EX_A0) ||
892 hw->chip_id >= CHIP_ID_YUKON_FE_P) {
893 /* Yukon-Extreme B0 and further Extreme devices */
894 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
895 } else if (dev->mtu > ETH_DATA_LEN) {
896 /* set Tx GMAC FIFO Almost Empty Threshold */
897 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
898 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
900 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
902 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
905 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
907 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
911 const u8 *addr = hw->dev[port]->dev_addr;
913 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
914 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
916 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
918 if (hw->chip_id == CHIP_ID_YUKON_XL &&
919 hw->chip_rev == CHIP_REV_YU_XL_A0 &&
921 /* WA DEV_472 -- looks like crossed wires on port 2 */
922 /* clear GMAC 1 Control reset */
923 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
925 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
926 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
927 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
928 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
929 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
932 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
934 /* Enable Transmit FIFO Underrun */
935 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
937 spin_lock_bh(&sky2->phy_lock);
938 sky2_phy_power_up(hw, port);
939 sky2_phy_init(hw, port);
940 spin_unlock_bh(&sky2->phy_lock);
943 reg = gma_read16(hw, port, GM_PHY_ADDR);
944 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
946 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
947 gma_read16(hw, port, i);
948 gma_write16(hw, port, GM_PHY_ADDR, reg);
950 /* transmit control */
951 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
953 /* receive control reg: unicast + multicast + no FCS */
954 gma_write16(hw, port, GM_RX_CTRL,
955 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
957 /* transmit flow control */
958 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
960 /* transmit parameter */
961 gma_write16(hw, port, GM_TX_PARAM,
962 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
963 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
964 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
965 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
967 /* serial mode register */
968 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
969 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF_1000);
971 if (hw->dev[port]->mtu > ETH_DATA_LEN)
972 reg |= GM_SMOD_JUMBO_ENA;
974 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
975 hw->chip_rev == CHIP_REV_YU_EC_U_B1)
976 reg |= GM_NEW_FLOW_CTRL;
978 gma_write16(hw, port, GM_SERIAL_MODE, reg);
980 /* virtual address for data */
981 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
983 /* physical address: used for pause frames */
984 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
986 /* ignore counter overflows */
987 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
988 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
989 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
991 /* Configure Rx MAC FIFO */
992 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
993 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
994 if (hw->chip_id == CHIP_ID_YUKON_EX ||
995 hw->chip_id == CHIP_ID_YUKON_FE_P)
996 rx_reg |= GMF_RX_OVER_ON;
998 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
1000 if (hw->chip_id == CHIP_ID_YUKON_XL) {
1001 /* Hardware errata - clear flush mask */
1002 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0);
1004 /* Flush Rx MAC FIFO on any flow control or error */
1005 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
1008 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
1009 reg = RX_GMF_FL_THR_DEF + 1;
1010 /* Another magic mystery workaround from sk98lin */
1011 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
1012 hw->chip_rev == CHIP_REV_YU_FE2_A0)
1014 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
1016 /* Configure Tx MAC FIFO */
1017 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
1018 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
1020 /* On chips without ram buffer, pause is controlled by MAC level */
1021 if (!(hw->flags & SKY2_HW_RAM_BUFFER)) {
1022 /* Pause threshold is scaled by 8 in bytes */
1023 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
1024 hw->chip_rev == CHIP_REV_YU_FE2_A0)
1028 sky2_write16(hw, SK_REG(port, RX_GMF_UP_THR), reg);
1029 sky2_write16(hw, SK_REG(port, RX_GMF_LP_THR), 768 / 8);
1031 sky2_set_tx_stfwd(hw, port);
1034 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
1035 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
1036 /* disable dynamic watermark */
1037 reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA));
1038 reg &= ~TX_DYN_WM_ENA;
1039 sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg);
1043 /* Assign Ram Buffer allocation to queue */
1044 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
1048 /* convert from K bytes to qwords used for hw register */
1051 end = start + space - 1;
1053 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
1054 sky2_write32(hw, RB_ADDR(q, RB_START), start);
1055 sky2_write32(hw, RB_ADDR(q, RB_END), end);
1056 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
1057 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
1059 if (q == Q_R1 || q == Q_R2) {
1060 u32 tp = space - space/4;
1062 /* On receive queue's set the thresholds
1063 * give receiver priority when > 3/4 full
1064 * send pause when down to 2K
1066 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
1067 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
1069 tp = space - 2048/8;
1070 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
1071 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
1073 /* Enable store & forward on Tx queue's because
1074 * Tx FIFO is only 1K on Yukon
1076 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
1079 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
1080 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
1083 /* Setup Bus Memory Interface */
1084 static void sky2_qset(struct sky2_hw *hw, u16 q)
1086 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
1087 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
1088 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
1089 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
1092 /* Setup prefetch unit registers. This is the interface between
1093 * hardware and driver list elements
1095 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
1096 dma_addr_t addr, u32 last)
1098 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1099 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
1100 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), upper_32_bits(addr));
1101 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), lower_32_bits(addr));
1102 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
1103 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
1105 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
1108 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2, u16 *slot)
1110 struct sky2_tx_le *le = sky2->tx_le + *slot;
1112 *slot = RING_NEXT(*slot, sky2->tx_ring_size);
1117 static void tx_init(struct sky2_port *sky2)
1119 struct sky2_tx_le *le;
1121 sky2->tx_prod = sky2->tx_cons = 0;
1122 sky2->tx_tcpsum = 0;
1123 sky2->tx_last_mss = 0;
1125 le = get_tx_le(sky2, &sky2->tx_prod);
1127 le->opcode = OP_ADDR64 | HW_OWNER;
1128 sky2->tx_last_upper = 0;
1131 /* Update chip's next pointer */
1132 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
1134 /* Make sure write' to descriptors are complete before we tell hardware */
1136 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
1138 /* Synchronize I/O on since next processor may write to tail */
1143 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
1145 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
1146 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
1151 static unsigned sky2_get_rx_threshold(struct sky2_port *sky2)
1155 /* Space needed for frame data + headers rounded up */
1156 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1158 /* Stopping point for hardware truncation */
1159 return (size - 8) / sizeof(u32);
1162 static unsigned sky2_get_rx_data_size(struct sky2_port *sky2)
1164 struct rx_ring_info *re;
1167 /* Space needed for frame data + headers rounded up */
1168 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1170 sky2->rx_nfrags = size >> PAGE_SHIFT;
1171 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1173 /* Compute residue after pages */
1174 size -= sky2->rx_nfrags << PAGE_SHIFT;
1176 /* Optimize to handle small packets and headers */
1177 if (size < copybreak)
1179 if (size < ETH_HLEN)
1185 /* Build description to hardware for one receive segment */
1186 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
1187 dma_addr_t map, unsigned len)
1189 struct sky2_rx_le *le;
1191 if (sizeof(dma_addr_t) > sizeof(u32)) {
1192 le = sky2_next_rx(sky2);
1193 le->addr = cpu_to_le32(upper_32_bits(map));
1194 le->opcode = OP_ADDR64 | HW_OWNER;
1197 le = sky2_next_rx(sky2);
1198 le->addr = cpu_to_le32(lower_32_bits(map));
1199 le->length = cpu_to_le16(len);
1200 le->opcode = op | HW_OWNER;
1203 /* Build description to hardware for one possibly fragmented skb */
1204 static void sky2_rx_submit(struct sky2_port *sky2,
1205 const struct rx_ring_info *re)
1209 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
1211 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
1212 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
1216 static int sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
1219 struct sk_buff *skb = re->skb;
1222 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
1223 if (pci_dma_mapping_error(pdev, re->data_addr))
1226 dma_unmap_len_set(re, data_size, size);
1228 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1229 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1231 re->frag_addr[i] = skb_frag_dma_map(&pdev->dev, frag, 0,
1232 skb_frag_size(frag),
1235 if (dma_mapping_error(&pdev->dev, re->frag_addr[i]))
1236 goto map_page_error;
1242 pci_unmap_page(pdev, re->frag_addr[i],
1243 skb_frag_size(&skb_shinfo(skb)->frags[i]),
1244 PCI_DMA_FROMDEVICE);
1247 pci_unmap_single(pdev, re->data_addr, dma_unmap_len(re, data_size),
1248 PCI_DMA_FROMDEVICE);
1251 if (net_ratelimit())
1252 dev_warn(&pdev->dev, "%s: rx mapping error\n",
1257 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1259 struct sk_buff *skb = re->skb;
1262 pci_unmap_single(pdev, re->data_addr, dma_unmap_len(re, data_size),
1263 PCI_DMA_FROMDEVICE);
1265 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1266 pci_unmap_page(pdev, re->frag_addr[i],
1267 skb_frag_size(&skb_shinfo(skb)->frags[i]),
1268 PCI_DMA_FROMDEVICE);
1271 /* Tell chip where to start receive checksum.
1272 * Actually has two checksums, but set both same to avoid possible byte
1275 static void rx_set_checksum(struct sky2_port *sky2)
1277 struct sky2_rx_le *le = sky2_next_rx(sky2);
1279 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1281 le->opcode = OP_TCPSTART | HW_OWNER;
1283 sky2_write32(sky2->hw,
1284 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1285 (sky2->netdev->features & NETIF_F_RXCSUM)
1286 ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
1290 * Fixed initial key as seed to RSS.
1292 static const uint32_t rss_init_key[10] = {
1293 0x7c3351da, 0x51c5cf4e, 0x44adbdd1, 0xe8d38d18, 0x48897c43,
1294 0xb1d60e7e, 0x6a3dd760, 0x01a2e453, 0x16f46f13, 0x1a0e7b30
1297 /* Enable/disable receive hash calculation (RSS) */
1298 static void rx_set_rss(struct net_device *dev, u32 features)
1300 struct sky2_port *sky2 = netdev_priv(dev);
1301 struct sky2_hw *hw = sky2->hw;
1304 /* Supports IPv6 and other modes */
1305 if (hw->flags & SKY2_HW_NEW_LE) {
1307 sky2_write32(hw, SK_REG(sky2->port, RSS_CFG), HASH_ALL);
1310 /* Program RSS initial values */
1311 if (features & NETIF_F_RXHASH) {
1312 for (i = 0; i < nkeys; i++)
1313 sky2_write32(hw, SK_REG(sky2->port, RSS_KEY + i * 4),
1316 /* Need to turn on (undocumented) flag to make hashing work */
1317 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T),
1320 sky2_write32(hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1321 BMU_ENA_RX_RSS_HASH);
1323 sky2_write32(hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1324 BMU_DIS_RX_RSS_HASH);
1328 * The RX Stop command will not work for Yukon-2 if the BMU does not
1329 * reach the end of packet and since we can't make sure that we have
1330 * incoming data, we must reset the BMU while it is not doing a DMA
1331 * transfer. Since it is possible that the RX path is still active,
1332 * the RX RAM buffer will be stopped first, so any possible incoming
1333 * data will not trigger a DMA. After the RAM buffer is stopped, the
1334 * BMU is polled until any DMA in progress is ended and only then it
1337 static void sky2_rx_stop(struct sky2_port *sky2)
1339 struct sky2_hw *hw = sky2->hw;
1340 unsigned rxq = rxqaddr[sky2->port];
1343 /* disable the RAM Buffer receive queue */
1344 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1346 for (i = 0; i < 0xffff; i++)
1347 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1348 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1351 netdev_warn(sky2->netdev, "receiver stop failed\n");
1353 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1355 /* reset the Rx prefetch unit */
1356 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1360 /* Clean out receive buffer area, assumes receiver hardware stopped */
1361 static void sky2_rx_clean(struct sky2_port *sky2)
1365 memset(sky2->rx_le, 0, RX_LE_BYTES);
1366 for (i = 0; i < sky2->rx_pending; i++) {
1367 struct rx_ring_info *re = sky2->rx_ring + i;
1370 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1377 /* Basic MII support */
1378 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1380 struct mii_ioctl_data *data = if_mii(ifr);
1381 struct sky2_port *sky2 = netdev_priv(dev);
1382 struct sky2_hw *hw = sky2->hw;
1383 int err = -EOPNOTSUPP;
1385 if (!netif_running(dev))
1386 return -ENODEV; /* Phy still in reset */
1390 data->phy_id = PHY_ADDR_MARV;
1396 spin_lock_bh(&sky2->phy_lock);
1397 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1398 spin_unlock_bh(&sky2->phy_lock);
1400 data->val_out = val;
1405 spin_lock_bh(&sky2->phy_lock);
1406 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1408 spin_unlock_bh(&sky2->phy_lock);
1414 #define SKY2_VLAN_OFFLOADS (NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO)
1416 static void sky2_vlan_mode(struct net_device *dev, u32 features)
1418 struct sky2_port *sky2 = netdev_priv(dev);
1419 struct sky2_hw *hw = sky2->hw;
1420 u16 port = sky2->port;
1422 if (features & NETIF_F_HW_VLAN_RX)
1423 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1426 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1429 if (features & NETIF_F_HW_VLAN_TX) {
1430 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1433 dev->vlan_features |= SKY2_VLAN_OFFLOADS;
1435 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1438 /* Can't do transmit offload of vlan without hw vlan */
1439 dev->vlan_features &= ~SKY2_VLAN_OFFLOADS;
1443 /* Amount of required worst case padding in rx buffer */
1444 static inline unsigned sky2_rx_pad(const struct sky2_hw *hw)
1446 return (hw->flags & SKY2_HW_RAM_BUFFER) ? 8 : 2;
1450 * Allocate an skb for receiving. If the MTU is large enough
1451 * make the skb non-linear with a fragment list of pages.
1453 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2, gfp_t gfp)
1455 struct sk_buff *skb;
1458 skb = __netdev_alloc_skb(sky2->netdev,
1459 sky2->rx_data_size + sky2_rx_pad(sky2->hw),
1464 if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) {
1465 unsigned char *start;
1467 * Workaround for a bug in FIFO that cause hang
1468 * if the FIFO if the receive buffer is not 64 byte aligned.
1469 * The buffer returned from netdev_alloc_skb is
1470 * aligned except if slab debugging is enabled.
1472 start = PTR_ALIGN(skb->data, 8);
1473 skb_reserve(skb, start - skb->data);
1475 skb_reserve(skb, NET_IP_ALIGN);
1477 for (i = 0; i < sky2->rx_nfrags; i++) {
1478 struct page *page = alloc_page(gfp);
1482 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1492 static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1494 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1497 static int sky2_alloc_rx_skbs(struct sky2_port *sky2)
1499 struct sky2_hw *hw = sky2->hw;
1502 sky2->rx_data_size = sky2_get_rx_data_size(sky2);
1505 for (i = 0; i < sky2->rx_pending; i++) {
1506 struct rx_ring_info *re = sky2->rx_ring + i;
1508 re->skb = sky2_rx_alloc(sky2, GFP_KERNEL);
1512 if (sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size)) {
1513 dev_kfree_skb(re->skb);
1522 * Setup receiver buffer pool.
1523 * Normal case this ends up creating one list element for skb
1524 * in the receive ring. Worst case if using large MTU and each
1525 * allocation falls on a different 64 bit region, that results
1526 * in 6 list elements per ring entry.
1527 * One element is used for checksum enable/disable, and one
1528 * extra to avoid wrap.
1530 static void sky2_rx_start(struct sky2_port *sky2)
1532 struct sky2_hw *hw = sky2->hw;
1533 struct rx_ring_info *re;
1534 unsigned rxq = rxqaddr[sky2->port];
1537 sky2->rx_put = sky2->rx_next = 0;
1540 /* On PCI express lowering the watermark gives better performance */
1541 if (pci_is_pcie(hw->pdev))
1542 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1544 /* These chips have no ram buffer?
1545 * MAC Rx RAM Read is controlled by hardware */
1546 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1547 hw->chip_rev > CHIP_REV_YU_EC_U_A0)
1548 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1550 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1552 if (!(hw->flags & SKY2_HW_NEW_LE))
1553 rx_set_checksum(sky2);
1555 if (!(hw->flags & SKY2_HW_RSS_BROKEN))
1556 rx_set_rss(sky2->netdev, sky2->netdev->features);
1558 /* submit Rx ring */
1559 for (i = 0; i < sky2->rx_pending; i++) {
1560 re = sky2->rx_ring + i;
1561 sky2_rx_submit(sky2, re);
1565 * The receiver hangs if it receives frames larger than the
1566 * packet buffer. As a workaround, truncate oversize frames, but
1567 * the register is limited to 9 bits, so if you do frames > 2052
1568 * you better get the MTU right!
1570 thresh = sky2_get_rx_threshold(sky2);
1572 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1574 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1575 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1578 /* Tell chip about available buffers */
1579 sky2_rx_update(sky2, rxq);
1581 if (hw->chip_id == CHIP_ID_YUKON_EX ||
1582 hw->chip_id == CHIP_ID_YUKON_SUPR) {
1584 * Disable flushing of non ASF packets;
1585 * must be done after initializing the BMUs;
1586 * drivers without ASF support should do this too, otherwise
1587 * it may happen that they cannot run on ASF devices;
1588 * remember that the MAC FIFO isn't reset during initialization.
1590 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_MACSEC_FLUSH_OFF);
1593 if (hw->chip_id >= CHIP_ID_YUKON_SUPR) {
1594 /* Enable RX Home Address & Routing Header checksum fix */
1595 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_FL_CTRL),
1596 RX_IPV6_SA_MOB_ENA | RX_IPV6_DA_MOB_ENA);
1598 /* Enable TX Home Address & Routing Header checksum fix */
1599 sky2_write32(hw, Q_ADDR(txqaddr[sky2->port], Q_TEST),
1600 TBMU_TEST_HOME_ADD_FIX_EN | TBMU_TEST_ROUTING_ADD_FIX_EN);
1604 static int sky2_alloc_buffers(struct sky2_port *sky2)
1606 struct sky2_hw *hw = sky2->hw;
1608 /* must be power of 2 */
1609 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1610 sky2->tx_ring_size *
1611 sizeof(struct sky2_tx_le),
1616 sky2->tx_ring = kcalloc(sky2->tx_ring_size, sizeof(struct tx_ring_info),
1621 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1625 memset(sky2->rx_le, 0, RX_LE_BYTES);
1627 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1632 return sky2_alloc_rx_skbs(sky2);
1637 static void sky2_free_buffers(struct sky2_port *sky2)
1639 struct sky2_hw *hw = sky2->hw;
1641 sky2_rx_clean(sky2);
1644 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1645 sky2->rx_le, sky2->rx_le_map);
1649 pci_free_consistent(hw->pdev,
1650 sky2->tx_ring_size * sizeof(struct sky2_tx_le),
1651 sky2->tx_le, sky2->tx_le_map);
1654 kfree(sky2->tx_ring);
1655 kfree(sky2->rx_ring);
1657 sky2->tx_ring = NULL;
1658 sky2->rx_ring = NULL;
1661 static void sky2_hw_up(struct sky2_port *sky2)
1663 struct sky2_hw *hw = sky2->hw;
1664 unsigned port = sky2->port;
1667 struct net_device *otherdev = hw->dev[sky2->port^1];
1672 * On dual port PCI-X card, there is an problem where status
1673 * can be received out of order due to split transactions
1675 if (otherdev && netif_running(otherdev) &&
1676 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1679 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1680 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1681 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1684 sky2_mac_init(hw, port);
1686 /* Register is number of 4K blocks on internal RAM buffer. */
1687 ramsize = sky2_read8(hw, B2_E_0) * 4;
1691 netdev_dbg(sky2->netdev, "ram buffer %dK\n", ramsize);
1693 rxspace = ramsize / 2;
1695 rxspace = 8 + (2*(ramsize - 16))/3;
1697 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1698 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1700 /* Make sure SyncQ is disabled */
1701 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1705 sky2_qset(hw, txqaddr[port]);
1707 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1708 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1709 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1711 /* Set almost empty threshold */
1712 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1713 hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1714 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1716 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1717 sky2->tx_ring_size - 1);
1719 sky2_vlan_mode(sky2->netdev, sky2->netdev->features);
1720 netdev_update_features(sky2->netdev);
1722 sky2_rx_start(sky2);
1725 /* Setup device IRQ and enable napi to process */
1726 static int sky2_setup_irq(struct sky2_hw *hw, const char *name)
1728 struct pci_dev *pdev = hw->pdev;
1731 err = request_irq(pdev->irq, sky2_intr,
1732 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
1735 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
1737 hw->flags |= SKY2_HW_IRQ_SETUP;
1739 napi_enable(&hw->napi);
1740 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
1741 sky2_read32(hw, B0_IMSK);
1748 /* Bring up network interface. */
1749 static int sky2_open(struct net_device *dev)
1751 struct sky2_port *sky2 = netdev_priv(dev);
1752 struct sky2_hw *hw = sky2->hw;
1753 unsigned port = sky2->port;
1757 netif_carrier_off(dev);
1759 err = sky2_alloc_buffers(sky2);
1763 /* With single port, IRQ is setup when device is brought up */
1764 if (hw->ports == 1 && (err = sky2_setup_irq(hw, dev->name)))
1769 /* Enable interrupts from phy/mac for port */
1770 imask = sky2_read32(hw, B0_IMSK);
1772 if (hw->chip_id == CHIP_ID_YUKON_OPT ||
1773 hw->chip_id == CHIP_ID_YUKON_PRM ||
1774 hw->chip_id == CHIP_ID_YUKON_OP_2)
1775 imask |= Y2_IS_PHY_QLNK; /* enable PHY Quick Link */
1777 imask |= portirq_msk[port];
1778 sky2_write32(hw, B0_IMSK, imask);
1779 sky2_read32(hw, B0_IMSK);
1781 netif_info(sky2, ifup, dev, "enabling interface\n");
1786 sky2_free_buffers(sky2);
1790 /* Modular subtraction in ring */
1791 static inline int tx_inuse(const struct sky2_port *sky2)
1793 return (sky2->tx_prod - sky2->tx_cons) & (sky2->tx_ring_size - 1);
1796 /* Number of list elements available for next tx */
1797 static inline int tx_avail(const struct sky2_port *sky2)
1799 return sky2->tx_pending - tx_inuse(sky2);
1802 /* Estimate of number of transmit list elements required */
1803 static unsigned tx_le_req(const struct sk_buff *skb)
1807 count = (skb_shinfo(skb)->nr_frags + 1)
1808 * (sizeof(dma_addr_t) / sizeof(u32));
1810 if (skb_is_gso(skb))
1812 else if (sizeof(dma_addr_t) == sizeof(u32))
1813 ++count; /* possible vlan */
1815 if (skb->ip_summed == CHECKSUM_PARTIAL)
1821 static void sky2_tx_unmap(struct pci_dev *pdev, struct tx_ring_info *re)
1823 if (re->flags & TX_MAP_SINGLE)
1824 pci_unmap_single(pdev, dma_unmap_addr(re, mapaddr),
1825 dma_unmap_len(re, maplen),
1827 else if (re->flags & TX_MAP_PAGE)
1828 pci_unmap_page(pdev, dma_unmap_addr(re, mapaddr),
1829 dma_unmap_len(re, maplen),
1835 * Put one packet in ring for transmit.
1836 * A single packet can generate multiple list elements, and
1837 * the number of ring elements will probably be less than the number
1838 * of list elements used.
1840 static netdev_tx_t sky2_xmit_frame(struct sk_buff *skb,
1841 struct net_device *dev)
1843 struct sky2_port *sky2 = netdev_priv(dev);
1844 struct sky2_hw *hw = sky2->hw;
1845 struct sky2_tx_le *le = NULL;
1846 struct tx_ring_info *re;
1854 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1855 return NETDEV_TX_BUSY;
1857 len = skb_headlen(skb);
1858 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1860 if (pci_dma_mapping_error(hw->pdev, mapping))
1863 slot = sky2->tx_prod;
1864 netif_printk(sky2, tx_queued, KERN_DEBUG, dev,
1865 "tx queued, slot %u, len %d\n", slot, skb->len);
1867 /* Send high bits if needed */
1868 upper = upper_32_bits(mapping);
1869 if (upper != sky2->tx_last_upper) {
1870 le = get_tx_le(sky2, &slot);
1871 le->addr = cpu_to_le32(upper);
1872 sky2->tx_last_upper = upper;
1873 le->opcode = OP_ADDR64 | HW_OWNER;
1876 /* Check for TCP Segmentation Offload */
1877 mss = skb_shinfo(skb)->gso_size;
1880 if (!(hw->flags & SKY2_HW_NEW_LE))
1881 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1883 if (mss != sky2->tx_last_mss) {
1884 le = get_tx_le(sky2, &slot);
1885 le->addr = cpu_to_le32(mss);
1887 if (hw->flags & SKY2_HW_NEW_LE)
1888 le->opcode = OP_MSS | HW_OWNER;
1890 le->opcode = OP_LRGLEN | HW_OWNER;
1891 sky2->tx_last_mss = mss;
1897 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1898 if (vlan_tx_tag_present(skb)) {
1900 le = get_tx_le(sky2, &slot);
1902 le->opcode = OP_VLAN|HW_OWNER;
1904 le->opcode |= OP_VLAN;
1905 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1909 /* Handle TCP checksum offload */
1910 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1911 /* On Yukon EX (some versions) encoding change. */
1912 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1913 ctrl |= CALSUM; /* auto checksum */
1915 const unsigned offset = skb_transport_offset(skb);
1918 tcpsum = offset << 16; /* sum start */
1919 tcpsum |= offset + skb->csum_offset; /* sum write */
1921 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1922 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1925 if (tcpsum != sky2->tx_tcpsum) {
1926 sky2->tx_tcpsum = tcpsum;
1928 le = get_tx_le(sky2, &slot);
1929 le->addr = cpu_to_le32(tcpsum);
1930 le->length = 0; /* initial checksum value */
1931 le->ctrl = 1; /* one packet */
1932 le->opcode = OP_TCPLISW | HW_OWNER;
1937 re = sky2->tx_ring + slot;
1938 re->flags = TX_MAP_SINGLE;
1939 dma_unmap_addr_set(re, mapaddr, mapping);
1940 dma_unmap_len_set(re, maplen, len);
1942 le = get_tx_le(sky2, &slot);
1943 le->addr = cpu_to_le32(lower_32_bits(mapping));
1944 le->length = cpu_to_le16(len);
1946 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1949 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1950 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1952 mapping = skb_frag_dma_map(&hw->pdev->dev, frag, 0,
1953 skb_frag_size(frag), DMA_TO_DEVICE);
1955 if (dma_mapping_error(&hw->pdev->dev, mapping))
1956 goto mapping_unwind;
1958 upper = upper_32_bits(mapping);
1959 if (upper != sky2->tx_last_upper) {
1960 le = get_tx_le(sky2, &slot);
1961 le->addr = cpu_to_le32(upper);
1962 sky2->tx_last_upper = upper;
1963 le->opcode = OP_ADDR64 | HW_OWNER;
1966 re = sky2->tx_ring + slot;
1967 re->flags = TX_MAP_PAGE;
1968 dma_unmap_addr_set(re, mapaddr, mapping);
1969 dma_unmap_len_set(re, maplen, skb_frag_size(frag));
1971 le = get_tx_le(sky2, &slot);
1972 le->addr = cpu_to_le32(lower_32_bits(mapping));
1973 le->length = cpu_to_le16(skb_frag_size(frag));
1975 le->opcode = OP_BUFFER | HW_OWNER;
1981 sky2->tx_prod = slot;
1983 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1984 netif_stop_queue(dev);
1986 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1988 return NETDEV_TX_OK;
1991 for (i = sky2->tx_prod; i != slot; i = RING_NEXT(i, sky2->tx_ring_size)) {
1992 re = sky2->tx_ring + i;
1994 sky2_tx_unmap(hw->pdev, re);
1998 if (net_ratelimit())
1999 dev_warn(&hw->pdev->dev, "%s: tx mapping error\n", dev->name);
2001 return NETDEV_TX_OK;
2005 * Free ring elements from starting at tx_cons until "done"
2008 * 1. The hardware will tell us about partial completion of multi-part
2009 * buffers so make sure not to free skb to early.
2010 * 2. This may run in parallel start_xmit because the it only
2011 * looks at the tail of the queue of FIFO (tx_cons), not
2012 * the head (tx_prod)
2014 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
2016 struct net_device *dev = sky2->netdev;
2019 BUG_ON(done >= sky2->tx_ring_size);
2021 for (idx = sky2->tx_cons; idx != done;
2022 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
2023 struct tx_ring_info *re = sky2->tx_ring + idx;
2024 struct sk_buff *skb = re->skb;
2026 sky2_tx_unmap(sky2->hw->pdev, re);
2029 netif_printk(sky2, tx_done, KERN_DEBUG, dev,
2030 "tx done %u\n", idx);
2032 u64_stats_update_begin(&sky2->tx_stats.syncp);
2033 ++sky2->tx_stats.packets;
2034 sky2->tx_stats.bytes += skb->len;
2035 u64_stats_update_end(&sky2->tx_stats.syncp);
2038 dev_kfree_skb_any(skb);
2040 sky2->tx_next = RING_NEXT(idx, sky2->tx_ring_size);
2044 sky2->tx_cons = idx;
2048 static void sky2_tx_reset(struct sky2_hw *hw, unsigned port)
2050 /* Disable Force Sync bit and Enable Alloc bit */
2051 sky2_write8(hw, SK_REG(port, TXA_CTRL),
2052 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
2054 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
2055 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
2056 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
2058 /* Reset the PCI FIFO of the async Tx queue */
2059 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
2060 BMU_RST_SET | BMU_FIFO_RST);
2062 /* Reset the Tx prefetch units */
2063 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
2066 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
2067 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
2069 sky2_read32(hw, B0_CTST);
2072 static void sky2_hw_down(struct sky2_port *sky2)
2074 struct sky2_hw *hw = sky2->hw;
2075 unsigned port = sky2->port;
2078 /* Force flow control off */
2079 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2081 /* Stop transmitter */
2082 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
2083 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
2085 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
2086 RB_RST_SET | RB_DIS_OP_MD);
2088 ctrl = gma_read16(hw, port, GM_GP_CTRL);
2089 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
2090 gma_write16(hw, port, GM_GP_CTRL, ctrl);
2092 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
2094 /* Workaround shared GMAC reset */
2095 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 &&
2096 port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
2097 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
2099 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
2101 /* Force any delayed status interrupt and NAPI */
2102 sky2_write32(hw, STAT_LEV_TIMER_CNT, 0);
2103 sky2_write32(hw, STAT_TX_TIMER_CNT, 0);
2104 sky2_write32(hw, STAT_ISR_TIMER_CNT, 0);
2105 sky2_read8(hw, STAT_ISR_TIMER_CTRL);
2109 spin_lock_bh(&sky2->phy_lock);
2110 sky2_phy_power_down(hw, port);
2111 spin_unlock_bh(&sky2->phy_lock);
2113 sky2_tx_reset(hw, port);
2115 /* Free any pending frames stuck in HW queue */
2116 sky2_tx_complete(sky2, sky2->tx_prod);
2119 /* Network shutdown */
2120 static int sky2_close(struct net_device *dev)
2122 struct sky2_port *sky2 = netdev_priv(dev);
2123 struct sky2_hw *hw = sky2->hw;
2125 /* Never really got started! */
2129 netif_info(sky2, ifdown, dev, "disabling interface\n");
2131 if (hw->ports == 1) {
2132 sky2_write32(hw, B0_IMSK, 0);
2133 sky2_read32(hw, B0_IMSK);
2135 napi_disable(&hw->napi);
2136 free_irq(hw->pdev->irq, hw);
2137 hw->flags &= ~SKY2_HW_IRQ_SETUP;
2141 /* Disable port IRQ */
2142 imask = sky2_read32(hw, B0_IMSK);
2143 imask &= ~portirq_msk[sky2->port];
2144 sky2_write32(hw, B0_IMSK, imask);
2145 sky2_read32(hw, B0_IMSK);
2147 synchronize_irq(hw->pdev->irq);
2148 napi_synchronize(&hw->napi);
2153 sky2_free_buffers(sky2);
2158 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
2160 if (hw->flags & SKY2_HW_FIBRE_PHY)
2163 if (!(hw->flags & SKY2_HW_GIGABIT)) {
2164 if (aux & PHY_M_PS_SPEED_100)
2170 switch (aux & PHY_M_PS_SPEED_MSK) {
2171 case PHY_M_PS_SPEED_1000:
2173 case PHY_M_PS_SPEED_100:
2180 static void sky2_link_up(struct sky2_port *sky2)
2182 struct sky2_hw *hw = sky2->hw;
2183 unsigned port = sky2->port;
2184 static const char *fc_name[] = {
2193 sky2_enable_rx_tx(sky2);
2195 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
2197 netif_carrier_on(sky2->netdev);
2199 mod_timer(&hw->watchdog_timer, jiffies + 1);
2201 /* Turn on link LED */
2202 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
2203 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
2205 netif_info(sky2, link, sky2->netdev,
2206 "Link is up at %d Mbps, %s duplex, flow control %s\n",
2208 sky2->duplex == DUPLEX_FULL ? "full" : "half",
2209 fc_name[sky2->flow_status]);
2212 static void sky2_link_down(struct sky2_port *sky2)
2214 struct sky2_hw *hw = sky2->hw;
2215 unsigned port = sky2->port;
2218 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
2220 reg = gma_read16(hw, port, GM_GP_CTRL);
2221 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
2222 gma_write16(hw, port, GM_GP_CTRL, reg);
2224 netif_carrier_off(sky2->netdev);
2226 /* Turn off link LED */
2227 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
2229 netif_info(sky2, link, sky2->netdev, "Link is down\n");
2231 sky2_phy_init(hw, port);
2234 static enum flow_control sky2_flow(int rx, int tx)
2237 return tx ? FC_BOTH : FC_RX;
2239 return tx ? FC_TX : FC_NONE;
2242 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
2244 struct sky2_hw *hw = sky2->hw;
2245 unsigned port = sky2->port;
2248 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
2249 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
2250 if (lpa & PHY_M_AN_RF) {
2251 netdev_err(sky2->netdev, "remote fault\n");
2255 if (!(aux & PHY_M_PS_SPDUP_RES)) {
2256 netdev_err(sky2->netdev, "speed/duplex mismatch\n");
2260 sky2->speed = sky2_phy_speed(hw, aux);
2261 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2263 /* Since the pause result bits seem to in different positions on
2264 * different chips. look at registers.
2266 if (hw->flags & SKY2_HW_FIBRE_PHY) {
2267 /* Shift for bits in fiber PHY */
2268 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
2269 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
2271 if (advert & ADVERTISE_1000XPAUSE)
2272 advert |= ADVERTISE_PAUSE_CAP;
2273 if (advert & ADVERTISE_1000XPSE_ASYM)
2274 advert |= ADVERTISE_PAUSE_ASYM;
2275 if (lpa & LPA_1000XPAUSE)
2276 lpa |= LPA_PAUSE_CAP;
2277 if (lpa & LPA_1000XPAUSE_ASYM)
2278 lpa |= LPA_PAUSE_ASYM;
2281 sky2->flow_status = FC_NONE;
2282 if (advert & ADVERTISE_PAUSE_CAP) {
2283 if (lpa & LPA_PAUSE_CAP)
2284 sky2->flow_status = FC_BOTH;
2285 else if (advert & ADVERTISE_PAUSE_ASYM)
2286 sky2->flow_status = FC_RX;
2287 } else if (advert & ADVERTISE_PAUSE_ASYM) {
2288 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
2289 sky2->flow_status = FC_TX;
2292 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000 &&
2293 !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
2294 sky2->flow_status = FC_NONE;
2296 if (sky2->flow_status & FC_TX)
2297 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2299 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2304 /* Interrupt from PHY */
2305 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
2307 struct net_device *dev = hw->dev[port];
2308 struct sky2_port *sky2 = netdev_priv(dev);
2309 u16 istatus, phystat;
2311 if (!netif_running(dev))
2314 spin_lock(&sky2->phy_lock);
2315 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2316 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2318 netif_info(sky2, intr, sky2->netdev, "phy interrupt status 0x%x 0x%x\n",
2321 if (istatus & PHY_M_IS_AN_COMPL) {
2322 if (sky2_autoneg_done(sky2, phystat) == 0 &&
2323 !netif_carrier_ok(dev))
2328 if (istatus & PHY_M_IS_LSP_CHANGE)
2329 sky2->speed = sky2_phy_speed(hw, phystat);
2331 if (istatus & PHY_M_IS_DUP_CHANGE)
2333 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2335 if (istatus & PHY_M_IS_LST_CHANGE) {
2336 if (phystat & PHY_M_PS_LINK_UP)
2339 sky2_link_down(sky2);
2342 spin_unlock(&sky2->phy_lock);
2345 /* Special quick link interrupt (Yukon-2 Optima only) */
2346 static void sky2_qlink_intr(struct sky2_hw *hw)
2348 struct sky2_port *sky2 = netdev_priv(hw->dev[0]);
2353 imask = sky2_read32(hw, B0_IMSK);
2354 imask &= ~Y2_IS_PHY_QLNK;
2355 sky2_write32(hw, B0_IMSK, imask);
2357 /* reset PHY Link Detect */
2358 phy = sky2_pci_read16(hw, PSM_CONFIG_REG4);
2359 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2360 sky2_pci_write16(hw, PSM_CONFIG_REG4, phy | 1);
2361 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2366 /* Transmit timeout is only called if we are running, carrier is up
2367 * and tx queue is full (stopped).
2369 static void sky2_tx_timeout(struct net_device *dev)
2371 struct sky2_port *sky2 = netdev_priv(dev);
2372 struct sky2_hw *hw = sky2->hw;
2374 netif_err(sky2, timer, dev, "tx timeout\n");
2376 netdev_printk(KERN_DEBUG, dev, "transmit ring %u .. %u report=%u done=%u\n",
2377 sky2->tx_cons, sky2->tx_prod,
2378 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
2379 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
2381 /* can't restart safely under softirq */
2382 schedule_work(&hw->restart_work);
2385 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
2387 struct sky2_port *sky2 = netdev_priv(dev);
2388 struct sky2_hw *hw = sky2->hw;
2389 unsigned port = sky2->port;
2394 /* MTU size outside the spec */
2395 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2398 /* MTU > 1500 on yukon FE and FE+ not allowed */
2399 if (new_mtu > ETH_DATA_LEN &&
2400 (hw->chip_id == CHIP_ID_YUKON_FE ||
2401 hw->chip_id == CHIP_ID_YUKON_FE_P))
2404 if (!netif_running(dev)) {
2406 netdev_update_features(dev);
2410 imask = sky2_read32(hw, B0_IMSK);
2411 sky2_write32(hw, B0_IMSK, 0);
2413 dev->trans_start = jiffies; /* prevent tx timeout */
2414 napi_disable(&hw->napi);
2415 netif_tx_disable(dev);
2417 synchronize_irq(hw->pdev->irq);
2419 if (!(hw->flags & SKY2_HW_RAM_BUFFER))
2420 sky2_set_tx_stfwd(hw, port);
2422 ctl = gma_read16(hw, port, GM_GP_CTRL);
2423 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2425 sky2_rx_clean(sky2);
2428 netdev_update_features(dev);
2430 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) | GM_SMOD_VLAN_ENA;
2431 if (sky2->speed > SPEED_100)
2432 mode |= IPG_DATA_VAL(IPG_DATA_DEF_1000);
2434 mode |= IPG_DATA_VAL(IPG_DATA_DEF_10_100);
2436 if (dev->mtu > ETH_DATA_LEN)
2437 mode |= GM_SMOD_JUMBO_ENA;
2439 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2441 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2443 err = sky2_alloc_rx_skbs(sky2);
2445 sky2_rx_start(sky2);
2447 sky2_rx_clean(sky2);
2448 sky2_write32(hw, B0_IMSK, imask);
2450 sky2_read32(hw, B0_Y2_SP_LISR);
2451 napi_enable(&hw->napi);
2456 gma_write16(hw, port, GM_GP_CTRL, ctl);
2458 netif_wake_queue(dev);
2464 /* For small just reuse existing skb for next receive */
2465 static struct sk_buff *receive_copy(struct sky2_port *sky2,
2466 const struct rx_ring_info *re,
2469 struct sk_buff *skb;
2471 skb = netdev_alloc_skb_ip_align(sky2->netdev, length);
2473 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2474 length, PCI_DMA_FROMDEVICE);
2475 skb_copy_from_linear_data(re->skb, skb->data, length);
2476 skb->ip_summed = re->skb->ip_summed;
2477 skb->csum = re->skb->csum;
2478 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2479 length, PCI_DMA_FROMDEVICE);
2480 re->skb->ip_summed = CHECKSUM_NONE;
2481 skb_put(skb, length);
2486 /* Adjust length of skb with fragments to match received data */
2487 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2488 unsigned int length)
2493 /* put header into skb */
2494 size = min(length, hdr_space);
2499 num_frags = skb_shinfo(skb)->nr_frags;
2500 for (i = 0; i < num_frags; i++) {
2501 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2504 /* don't need this page */
2505 __skb_frag_unref(frag);
2506 --skb_shinfo(skb)->nr_frags;
2508 size = min(length, (unsigned) PAGE_SIZE);
2510 skb_frag_size_set(frag, size);
2511 skb->data_len += size;
2512 skb->truesize += PAGE_SIZE;
2519 /* Normal packet - take skb from ring element and put in a new one */
2520 static struct sk_buff *receive_new(struct sky2_port *sky2,
2521 struct rx_ring_info *re,
2522 unsigned int length)
2524 struct sk_buff *skb;
2525 struct rx_ring_info nre;
2526 unsigned hdr_space = sky2->rx_data_size;
2528 nre.skb = sky2_rx_alloc(sky2, GFP_ATOMIC);
2529 if (unlikely(!nre.skb))
2532 if (sky2_rx_map_skb(sky2->hw->pdev, &nre, hdr_space))
2536 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2537 prefetch(skb->data);
2540 if (skb_shinfo(skb)->nr_frags)
2541 skb_put_frags(skb, hdr_space, length);
2543 skb_put(skb, length);
2547 dev_kfree_skb(nre.skb);
2553 * Receive one packet.
2554 * For larger packets, get new buffer.
2556 static struct sk_buff *sky2_receive(struct net_device *dev,
2557 u16 length, u32 status)
2559 struct sky2_port *sky2 = netdev_priv(dev);
2560 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2561 struct sk_buff *skb = NULL;
2562 u16 count = (status & GMR_FS_LEN) >> 16;
2564 if (status & GMR_FS_VLAN)
2565 count -= VLAN_HLEN; /* Account for vlan tag */
2567 netif_printk(sky2, rx_status, KERN_DEBUG, dev,
2568 "rx slot %u status 0x%x len %d\n",
2569 sky2->rx_next, status, length);
2571 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2572 prefetch(sky2->rx_ring + sky2->rx_next);
2574 /* This chip has hardware problems that generates bogus status.
2575 * So do only marginal checking and expect higher level protocols
2576 * to handle crap frames.
2578 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2579 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2583 if (status & GMR_FS_ANY_ERR)
2586 if (!(status & GMR_FS_RX_OK))
2589 /* if length reported by DMA does not match PHY, packet was truncated */
2590 if (length != count)
2594 if (length < copybreak)
2595 skb = receive_copy(sky2, re, length);
2597 skb = receive_new(sky2, re, length);
2599 dev->stats.rx_dropped += (skb == NULL);
2602 sky2_rx_submit(sky2, re);
2607 ++dev->stats.rx_errors;
2609 if (net_ratelimit())
2610 netif_info(sky2, rx_err, dev,
2611 "rx error, status 0x%x length %d\n", status, length);
2616 /* Transmit complete */
2617 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2619 struct sky2_port *sky2 = netdev_priv(dev);
2621 if (netif_running(dev)) {
2622 sky2_tx_complete(sky2, last);
2624 /* Wake unless it's detached, and called e.g. from sky2_close() */
2625 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
2626 netif_wake_queue(dev);
2630 static inline void sky2_skb_rx(const struct sky2_port *sky2,
2631 u32 status, struct sk_buff *skb)
2633 if (status & GMR_FS_VLAN)
2634 __vlan_hwaccel_put_tag(skb, be16_to_cpu(sky2->rx_tag));
2636 if (skb->ip_summed == CHECKSUM_NONE)
2637 netif_receive_skb(skb);
2639 napi_gro_receive(&sky2->hw->napi, skb);
2642 static inline void sky2_rx_done(struct sky2_hw *hw, unsigned port,
2643 unsigned packets, unsigned bytes)
2645 struct net_device *dev = hw->dev[port];
2646 struct sky2_port *sky2 = netdev_priv(dev);
2651 u64_stats_update_begin(&sky2->rx_stats.syncp);
2652 sky2->rx_stats.packets += packets;
2653 sky2->rx_stats.bytes += bytes;
2654 u64_stats_update_end(&sky2->rx_stats.syncp);
2656 dev->last_rx = jiffies;
2657 sky2_rx_update(netdev_priv(dev), rxqaddr[port]);
2660 static void sky2_rx_checksum(struct sky2_port *sky2, u32 status)
2662 /* If this happens then driver assuming wrong format for chip type */
2663 BUG_ON(sky2->hw->flags & SKY2_HW_NEW_LE);
2665 /* Both checksum counters are programmed to start at
2666 * the same offset, so unless there is a problem they
2667 * should match. This failure is an early indication that
2668 * hardware receive checksumming won't work.
2670 if (likely((u16)(status >> 16) == (u16)status)) {
2671 struct sk_buff *skb = sky2->rx_ring[sky2->rx_next].skb;
2672 skb->ip_summed = CHECKSUM_COMPLETE;
2673 skb->csum = le16_to_cpu(status);
2675 dev_notice(&sky2->hw->pdev->dev,
2676 "%s: receive checksum problem (status = %#x)\n",
2677 sky2->netdev->name, status);
2679 /* Disable checksum offload
2680 * It will be reenabled on next ndo_set_features, but if it's
2681 * really broken, will get disabled again
2683 sky2->netdev->features &= ~NETIF_F_RXCSUM;
2684 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2689 static void sky2_rx_hash(struct sky2_port *sky2, u32 status)
2691 struct sk_buff *skb;
2693 skb = sky2->rx_ring[sky2->rx_next].skb;
2694 skb->rxhash = le32_to_cpu(status);
2697 /* Process status response ring */
2698 static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
2701 unsigned int total_bytes[2] = { 0 };
2702 unsigned int total_packets[2] = { 0 };
2706 struct sky2_port *sky2;
2707 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2709 struct net_device *dev;
2710 struct sk_buff *skb;
2713 u8 opcode = le->opcode;
2715 if (!(opcode & HW_OWNER))
2718 hw->st_idx = RING_NEXT(hw->st_idx, hw->st_size);
2720 port = le->css & CSS_LINK_BIT;
2721 dev = hw->dev[port];
2722 sky2 = netdev_priv(dev);
2723 length = le16_to_cpu(le->length);
2724 status = le32_to_cpu(le->status);
2727 switch (opcode & ~HW_OWNER) {
2729 total_packets[port]++;
2730 total_bytes[port] += length;
2732 skb = sky2_receive(dev, length, status);
2736 /* This chip reports checksum status differently */
2737 if (hw->flags & SKY2_HW_NEW_LE) {
2738 if ((dev->features & NETIF_F_RXCSUM) &&
2739 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2740 (le->css & CSS_TCPUDPCSOK))
2741 skb->ip_summed = CHECKSUM_UNNECESSARY;
2743 skb->ip_summed = CHECKSUM_NONE;
2746 skb->protocol = eth_type_trans(skb, dev);
2748 sky2_skb_rx(sky2, status, skb);
2750 /* Stop after net poll weight */
2751 if (++work_done >= to_do)
2756 sky2->rx_tag = length;
2760 sky2->rx_tag = length;
2763 if (likely(dev->features & NETIF_F_RXCSUM))
2764 sky2_rx_checksum(sky2, status);
2768 sky2_rx_hash(sky2, status);
2772 /* TX index reports status for both ports */
2773 sky2_tx_done(hw->dev[0], status & 0xfff);
2775 sky2_tx_done(hw->dev[1],
2776 ((status >> 24) & 0xff)
2777 | (u16)(length & 0xf) << 8);
2781 if (net_ratelimit())
2782 pr_warning("unknown status opcode 0x%x\n", opcode);
2784 } while (hw->st_idx != idx);
2786 /* Fully processed status ring so clear irq */
2787 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2790 sky2_rx_done(hw, 0, total_packets[0], total_bytes[0]);
2791 sky2_rx_done(hw, 1, total_packets[1], total_bytes[1]);
2796 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2798 struct net_device *dev = hw->dev[port];
2800 if (net_ratelimit())
2801 netdev_info(dev, "hw error interrupt status 0x%x\n", status);
2803 if (status & Y2_IS_PAR_RD1) {
2804 if (net_ratelimit())
2805 netdev_err(dev, "ram data read parity error\n");
2807 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2810 if (status & Y2_IS_PAR_WR1) {
2811 if (net_ratelimit())
2812 netdev_err(dev, "ram data write parity error\n");
2814 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2817 if (status & Y2_IS_PAR_MAC1) {
2818 if (net_ratelimit())
2819 netdev_err(dev, "MAC parity error\n");
2820 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2823 if (status & Y2_IS_PAR_RX1) {
2824 if (net_ratelimit())
2825 netdev_err(dev, "RX parity error\n");
2826 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2829 if (status & Y2_IS_TCP_TXA1) {
2830 if (net_ratelimit())
2831 netdev_err(dev, "TCP segmentation error\n");
2832 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2836 static void sky2_hw_intr(struct sky2_hw *hw)
2838 struct pci_dev *pdev = hw->pdev;
2839 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2840 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2844 if (status & Y2_IS_TIST_OV)
2845 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2847 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2850 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2851 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2852 if (net_ratelimit())
2853 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
2856 sky2_pci_write16(hw, PCI_STATUS,
2857 pci_err | PCI_STATUS_ERROR_BITS);
2858 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2861 if (status & Y2_IS_PCI_EXP) {
2862 /* PCI-Express uncorrectable Error occurred */
2865 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2866 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2867 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2869 if (net_ratelimit())
2870 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
2872 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2873 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2876 if (status & Y2_HWE_L1_MASK)
2877 sky2_hw_error(hw, 0, status);
2879 if (status & Y2_HWE_L1_MASK)
2880 sky2_hw_error(hw, 1, status);
2883 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2885 struct net_device *dev = hw->dev[port];
2886 struct sky2_port *sky2 = netdev_priv(dev);
2887 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2889 netif_info(sky2, intr, dev, "mac interrupt status 0x%x\n", status);
2891 if (status & GM_IS_RX_CO_OV)
2892 gma_read16(hw, port, GM_RX_IRQ_SRC);
2894 if (status & GM_IS_TX_CO_OV)
2895 gma_read16(hw, port, GM_TX_IRQ_SRC);
2897 if (status & GM_IS_RX_FF_OR) {
2898 ++dev->stats.rx_fifo_errors;
2899 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2902 if (status & GM_IS_TX_FF_UR) {
2903 ++dev->stats.tx_fifo_errors;
2904 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2908 /* This should never happen it is a bug. */
2909 static void sky2_le_error(struct sky2_hw *hw, unsigned port, u16 q)
2911 struct net_device *dev = hw->dev[port];
2912 u16 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2914 dev_err(&hw->pdev->dev, "%s: descriptor error q=%#x get=%u put=%u\n",
2915 dev->name, (unsigned) q, (unsigned) idx,
2916 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2918 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2921 static int sky2_rx_hung(struct net_device *dev)
2923 struct sky2_port *sky2 = netdev_priv(dev);
2924 struct sky2_hw *hw = sky2->hw;
2925 unsigned port = sky2->port;
2926 unsigned rxq = rxqaddr[port];
2927 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2928 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2929 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2930 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2932 /* If idle and MAC or PCI is stuck */
2933 if (sky2->check.last == dev->last_rx &&
2934 ((mac_rp == sky2->check.mac_rp &&
2935 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2936 /* Check if the PCI RX hang */
2937 (fifo_rp == sky2->check.fifo_rp &&
2938 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2939 netdev_printk(KERN_DEBUG, dev,
2940 "hung mac %d:%d fifo %d (%d:%d)\n",
2941 mac_lev, mac_rp, fifo_lev,
2942 fifo_rp, sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2945 sky2->check.last = dev->last_rx;
2946 sky2->check.mac_rp = mac_rp;
2947 sky2->check.mac_lev = mac_lev;
2948 sky2->check.fifo_rp = fifo_rp;
2949 sky2->check.fifo_lev = fifo_lev;
2954 static void sky2_watchdog(unsigned long arg)
2956 struct sky2_hw *hw = (struct sky2_hw *) arg;
2958 /* Check for lost IRQ once a second */
2959 if (sky2_read32(hw, B0_ISRC)) {
2960 napi_schedule(&hw->napi);
2964 for (i = 0; i < hw->ports; i++) {
2965 struct net_device *dev = hw->dev[i];
2966 if (!netif_running(dev))
2970 /* For chips with Rx FIFO, check if stuck */
2971 if ((hw->flags & SKY2_HW_RAM_BUFFER) &&
2972 sky2_rx_hung(dev)) {
2973 netdev_info(dev, "receiver hang detected\n");
2974 schedule_work(&hw->restart_work);
2983 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
2986 /* Hardware/software error handling */
2987 static void sky2_err_intr(struct sky2_hw *hw, u32 status)
2989 if (net_ratelimit())
2990 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
2992 if (status & Y2_IS_HW_ERR)
2995 if (status & Y2_IS_IRQ_MAC1)
2996 sky2_mac_intr(hw, 0);
2998 if (status & Y2_IS_IRQ_MAC2)
2999 sky2_mac_intr(hw, 1);
3001 if (status & Y2_IS_CHK_RX1)
3002 sky2_le_error(hw, 0, Q_R1);
3004 if (status & Y2_IS_CHK_RX2)
3005 sky2_le_error(hw, 1, Q_R2);
3007 if (status & Y2_IS_CHK_TXA1)
3008 sky2_le_error(hw, 0, Q_XA1);
3010 if (status & Y2_IS_CHK_TXA2)
3011 sky2_le_error(hw, 1, Q_XA2);
3014 static int sky2_poll(struct napi_struct *napi, int work_limit)
3016 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
3017 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
3021 if (unlikely(status & Y2_IS_ERROR))
3022 sky2_err_intr(hw, status);
3024 if (status & Y2_IS_IRQ_PHY1)
3025 sky2_phy_intr(hw, 0);
3027 if (status & Y2_IS_IRQ_PHY2)
3028 sky2_phy_intr(hw, 1);
3030 if (status & Y2_IS_PHY_QLNK)
3031 sky2_qlink_intr(hw);
3033 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
3034 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
3036 if (work_done >= work_limit)
3040 napi_complete(napi);
3041 sky2_read32(hw, B0_Y2_SP_LISR);
3047 static irqreturn_t sky2_intr(int irq, void *dev_id)
3049 struct sky2_hw *hw = dev_id;
3052 /* Reading this mask interrupts as side effect */
3053 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
3054 if (status == 0 || status == ~0)
3057 prefetch(&hw->st_le[hw->st_idx]);
3059 napi_schedule(&hw->napi);
3064 #ifdef CONFIG_NET_POLL_CONTROLLER
3065 static void sky2_netpoll(struct net_device *dev)
3067 struct sky2_port *sky2 = netdev_priv(dev);
3069 napi_schedule(&sky2->hw->napi);
3073 /* Chip internal frequency for clock calculations */
3074 static u32 sky2_mhz(const struct sky2_hw *hw)
3076 switch (hw->chip_id) {
3077 case CHIP_ID_YUKON_EC:
3078 case CHIP_ID_YUKON_EC_U:
3079 case CHIP_ID_YUKON_EX:
3080 case CHIP_ID_YUKON_SUPR:
3081 case CHIP_ID_YUKON_UL_2:
3082 case CHIP_ID_YUKON_OPT:
3083 case CHIP_ID_YUKON_PRM:
3084 case CHIP_ID_YUKON_OP_2:
3087 case CHIP_ID_YUKON_FE:
3090 case CHIP_ID_YUKON_FE_P:
3093 case CHIP_ID_YUKON_XL:
3101 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
3103 return sky2_mhz(hw) * us;
3106 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
3108 return clk / sky2_mhz(hw);
3112 static int __devinit sky2_init(struct sky2_hw *hw)
3116 /* Enable all clocks and check for bad PCI access */
3117 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
3119 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3121 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
3122 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
3124 switch (hw->chip_id) {
3125 case CHIP_ID_YUKON_XL:
3126 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
3127 if (hw->chip_rev < CHIP_REV_YU_XL_A2)
3128 hw->flags |= SKY2_HW_RSS_BROKEN;
3131 case CHIP_ID_YUKON_EC_U:
3132 hw->flags = SKY2_HW_GIGABIT
3134 | SKY2_HW_ADV_POWER_CTL;
3137 case CHIP_ID_YUKON_EX:
3138 hw->flags = SKY2_HW_GIGABIT
3141 | SKY2_HW_ADV_POWER_CTL
3142 | SKY2_HW_RSS_CHKSUM;
3144 /* New transmit checksum */
3145 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
3146 hw->flags |= SKY2_HW_AUTO_TX_SUM;
3149 case CHIP_ID_YUKON_EC:
3150 /* This rev is really old, and requires untested workarounds */
3151 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
3152 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
3155 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_RSS_BROKEN;
3158 case CHIP_ID_YUKON_FE:
3159 hw->flags = SKY2_HW_RSS_BROKEN;
3162 case CHIP_ID_YUKON_FE_P:
3163 hw->flags = SKY2_HW_NEWER_PHY
3165 | SKY2_HW_AUTO_TX_SUM
3166 | SKY2_HW_ADV_POWER_CTL;
3168 /* The workaround for status conflicts VLAN tag detection. */
3169 if (hw->chip_rev == CHIP_REV_YU_FE2_A0)
3170 hw->flags |= SKY2_HW_VLAN_BROKEN | SKY2_HW_RSS_CHKSUM;
3173 case CHIP_ID_YUKON_SUPR:
3174 hw->flags = SKY2_HW_GIGABIT
3177 | SKY2_HW_AUTO_TX_SUM
3178 | SKY2_HW_ADV_POWER_CTL;
3180 if (hw->chip_rev == CHIP_REV_YU_SU_A0)
3181 hw->flags |= SKY2_HW_RSS_CHKSUM;
3184 case CHIP_ID_YUKON_UL_2:
3185 hw->flags = SKY2_HW_GIGABIT
3186 | SKY2_HW_ADV_POWER_CTL;
3189 case CHIP_ID_YUKON_OPT:
3190 case CHIP_ID_YUKON_PRM:
3191 case CHIP_ID_YUKON_OP_2:
3192 hw->flags = SKY2_HW_GIGABIT
3194 | SKY2_HW_ADV_POWER_CTL;
3198 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
3203 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
3204 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
3205 hw->flags |= SKY2_HW_FIBRE_PHY;
3208 t8 = sky2_read8(hw, B2_Y2_HW_RES);
3209 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
3210 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
3214 if (sky2_read8(hw, B2_E_0))
3215 hw->flags |= SKY2_HW_RAM_BUFFER;
3220 static void sky2_reset(struct sky2_hw *hw)
3222 struct pci_dev *pdev = hw->pdev;
3225 u32 hwe_mask = Y2_HWE_ALL_MASK;
3228 if (hw->chip_id == CHIP_ID_YUKON_EX
3229 || hw->chip_id == CHIP_ID_YUKON_SUPR) {
3230 sky2_write32(hw, CPU_WDOG, 0);
3231 status = sky2_read16(hw, HCU_CCSR);
3232 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
3233 HCU_CCSR_UC_STATE_MSK);
3235 * CPU clock divider shouldn't be used because
3236 * - ASF firmware may malfunction
3237 * - Yukon-Supreme: Parallel FLASH doesn't support divided clocks
3239 status &= ~HCU_CCSR_CPU_CLK_DIVIDE_MSK;
3240 sky2_write16(hw, HCU_CCSR, status);
3241 sky2_write32(hw, CPU_WDOG, 0);
3243 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
3244 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
3247 sky2_write8(hw, B0_CTST, CS_RST_SET);
3248 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3250 /* allow writes to PCI config */
3251 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3253 /* clear PCI errors, if any */
3254 status = sky2_pci_read16(hw, PCI_STATUS);
3255 status |= PCI_STATUS_ERROR_BITS;
3256 sky2_pci_write16(hw, PCI_STATUS, status);
3258 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
3260 if (pci_is_pcie(pdev)) {
3261 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
3264 /* If error bit is stuck on ignore it */
3265 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
3266 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
3268 hwe_mask |= Y2_IS_PCI_EXP;
3272 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3274 for (i = 0; i < hw->ports; i++) {
3275 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
3276 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
3278 if (hw->chip_id == CHIP_ID_YUKON_EX ||
3279 hw->chip_id == CHIP_ID_YUKON_SUPR)
3280 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
3281 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
3286 if (hw->chip_id == CHIP_ID_YUKON_SUPR && hw->chip_rev > CHIP_REV_YU_SU_B0) {
3287 /* enable MACSec clock gating */
3288 sky2_pci_write32(hw, PCI_DEV_REG3, P_CLK_MACSEC_DIS);
3291 if (hw->chip_id == CHIP_ID_YUKON_OPT ||
3292 hw->chip_id == CHIP_ID_YUKON_PRM ||
3293 hw->chip_id == CHIP_ID_YUKON_OP_2) {
3296 if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
3297 /* disable PCI-E PHY power down (set PHY reg 0x80, bit 7 */
3298 sky2_write32(hw, Y2_PEX_PHY_DATA, (0x80UL << 16) | (1 << 7));
3300 /* set PHY Link Detect Timer to 1.1 second (11x 100ms) */
3303 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3304 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3306 /* set PHY Link Detect Timer to 0.4 second (4x 100ms) */
3310 reg <<= PSM_CONFIG_REG4_TIMER_PHY_LINK_DETECT_BASE;
3311 reg |= PSM_CONFIG_REG4_RST_PHY_LINK_DETECT;
3313 /* reset PHY Link Detect */
3314 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3315 sky2_pci_write16(hw, PSM_CONFIG_REG4, reg);
3317 /* check if PSMv2 was running before */
3318 reg = sky2_pci_read16(hw, PSM_CONFIG_REG3);
3319 if (reg & PCI_EXP_LNKCTL_ASPMC)
3320 /* restore the PCIe Link Control register */
3321 sky2_pci_write16(hw, pdev->pcie_cap + PCI_EXP_LNKCTL,
3324 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3326 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3327 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3330 /* Clear I2C IRQ noise */
3331 sky2_write32(hw, B2_I2C_IRQ, 1);
3333 /* turn off hardware timer (unused) */
3334 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
3335 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
3337 /* Turn off descriptor polling */
3338 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
3340 /* Turn off receive timestamp */
3341 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
3342 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
3344 /* enable the Tx Arbiters */
3345 for (i = 0; i < hw->ports; i++)
3346 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3348 /* Initialize ram interface */
3349 for (i = 0; i < hw->ports; i++) {
3350 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
3352 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
3353 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
3354 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
3355 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
3356 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
3357 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
3358 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
3359 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
3360 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
3361 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
3362 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
3363 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
3366 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
3368 for (i = 0; i < hw->ports; i++)
3369 sky2_gmac_reset(hw, i);
3371 memset(hw->st_le, 0, hw->st_size * sizeof(struct sky2_status_le));
3374 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
3375 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
3377 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
3378 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
3380 /* Set the list last index */
3381 sky2_write16(hw, STAT_LAST_IDX, hw->st_size - 1);
3383 sky2_write16(hw, STAT_TX_IDX_TH, 10);
3384 sky2_write8(hw, STAT_FIFO_WM, 16);
3386 /* set Status-FIFO ISR watermark */
3387 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
3388 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
3390 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
3392 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
3393 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
3394 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
3396 /* enable status unit */
3397 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
3399 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3400 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3401 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3404 /* Take device down (offline).
3405 * Equivalent to doing dev_stop() but this does not
3406 * inform upper layers of the transition.
3408 static void sky2_detach(struct net_device *dev)
3410 if (netif_running(dev)) {
3412 netif_device_detach(dev); /* stop txq */
3413 netif_tx_unlock(dev);
3418 /* Bring device back after doing sky2_detach */
3419 static int sky2_reattach(struct net_device *dev)
3423 if (netif_running(dev)) {
3424 err = sky2_open(dev);
3426 netdev_info(dev, "could not restart %d\n", err);
3429 netif_device_attach(dev);
3430 sky2_set_multicast(dev);
3437 static void sky2_all_down(struct sky2_hw *hw)
3441 if (hw->flags & SKY2_HW_IRQ_SETUP) {
3442 sky2_read32(hw, B0_IMSK);
3443 sky2_write32(hw, B0_IMSK, 0);
3445 synchronize_irq(hw->pdev->irq);
3446 napi_disable(&hw->napi);
3449 for (i = 0; i < hw->ports; i++) {
3450 struct net_device *dev = hw->dev[i];
3451 struct sky2_port *sky2 = netdev_priv(dev);
3453 if (!netif_running(dev))
3456 netif_carrier_off(dev);
3457 netif_tx_disable(dev);
3462 static void sky2_all_up(struct sky2_hw *hw)
3464 u32 imask = Y2_IS_BASE;
3467 for (i = 0; i < hw->ports; i++) {
3468 struct net_device *dev = hw->dev[i];
3469 struct sky2_port *sky2 = netdev_priv(dev);
3471 if (!netif_running(dev))
3475 sky2_set_multicast(dev);
3476 imask |= portirq_msk[i];
3477 netif_wake_queue(dev);
3480 if (hw->flags & SKY2_HW_IRQ_SETUP) {
3481 sky2_write32(hw, B0_IMSK, imask);
3482 sky2_read32(hw, B0_IMSK);
3483 sky2_read32(hw, B0_Y2_SP_LISR);
3484 napi_enable(&hw->napi);
3488 static void sky2_restart(struct work_struct *work)
3490 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
3501 static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
3503 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
3506 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3508 const struct sky2_port *sky2 = netdev_priv(dev);
3510 wol->supported = sky2_wol_supported(sky2->hw);
3511 wol->wolopts = sky2->wol;
3514 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3516 struct sky2_port *sky2 = netdev_priv(dev);
3517 struct sky2_hw *hw = sky2->hw;
3518 bool enable_wakeup = false;
3521 if ((wol->wolopts & ~sky2_wol_supported(sky2->hw)) ||
3522 !device_can_wakeup(&hw->pdev->dev))
3525 sky2->wol = wol->wolopts;
3527 for (i = 0; i < hw->ports; i++) {
3528 struct net_device *dev = hw->dev[i];
3529 struct sky2_port *sky2 = netdev_priv(dev);
3532 enable_wakeup = true;
3534 device_set_wakeup_enable(&hw->pdev->dev, enable_wakeup);
3539 static u32 sky2_supported_modes(const struct sky2_hw *hw)
3541 if (sky2_is_copper(hw)) {
3542 u32 modes = SUPPORTED_10baseT_Half
3543 | SUPPORTED_10baseT_Full
3544 | SUPPORTED_100baseT_Half
3545 | SUPPORTED_100baseT_Full;
3547 if (hw->flags & SKY2_HW_GIGABIT)
3548 modes |= SUPPORTED_1000baseT_Half
3549 | SUPPORTED_1000baseT_Full;
3552 return SUPPORTED_1000baseT_Half
3553 | SUPPORTED_1000baseT_Full;
3556 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3558 struct sky2_port *sky2 = netdev_priv(dev);
3559 struct sky2_hw *hw = sky2->hw;
3561 ecmd->transceiver = XCVR_INTERNAL;
3562 ecmd->supported = sky2_supported_modes(hw);
3563 ecmd->phy_address = PHY_ADDR_MARV;
3564 if (sky2_is_copper(hw)) {
3565 ecmd->port = PORT_TP;
3566 ethtool_cmd_speed_set(ecmd, sky2->speed);
3567 ecmd->supported |= SUPPORTED_Autoneg | SUPPORTED_TP;
3569 ethtool_cmd_speed_set(ecmd, SPEED_1000);
3570 ecmd->port = PORT_FIBRE;
3571 ecmd->supported |= SUPPORTED_Autoneg | SUPPORTED_FIBRE;
3574 ecmd->advertising = sky2->advertising;
3575 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_SPEED)
3576 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3577 ecmd->duplex = sky2->duplex;
3581 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3583 struct sky2_port *sky2 = netdev_priv(dev);
3584 const struct sky2_hw *hw = sky2->hw;
3585 u32 supported = sky2_supported_modes(hw);
3587 if (ecmd->autoneg == AUTONEG_ENABLE) {
3588 if (ecmd->advertising & ~supported)
3591 if (sky2_is_copper(hw))
3592 sky2->advertising = ecmd->advertising |
3596 sky2->advertising = ecmd->advertising |
3600 sky2->flags |= SKY2_FLAG_AUTO_SPEED;
3605 u32 speed = ethtool_cmd_speed(ecmd);
3609 if (ecmd->duplex == DUPLEX_FULL)
3610 setting = SUPPORTED_1000baseT_Full;
3611 else if (ecmd->duplex == DUPLEX_HALF)
3612 setting = SUPPORTED_1000baseT_Half;
3617 if (ecmd->duplex == DUPLEX_FULL)
3618 setting = SUPPORTED_100baseT_Full;
3619 else if (ecmd->duplex == DUPLEX_HALF)
3620 setting = SUPPORTED_100baseT_Half;
3626 if (ecmd->duplex == DUPLEX_FULL)
3627 setting = SUPPORTED_10baseT_Full;
3628 else if (ecmd->duplex == DUPLEX_HALF)
3629 setting = SUPPORTED_10baseT_Half;
3637 if ((setting & supported) == 0)
3640 sky2->speed = speed;
3641 sky2->duplex = ecmd->duplex;
3642 sky2->flags &= ~SKY2_FLAG_AUTO_SPEED;
3645 if (netif_running(dev)) {
3646 sky2_phy_reinit(sky2);
3647 sky2_set_multicast(dev);
3653 static void sky2_get_drvinfo(struct net_device *dev,
3654 struct ethtool_drvinfo *info)
3656 struct sky2_port *sky2 = netdev_priv(dev);
3658 strcpy(info->driver, DRV_NAME);
3659 strcpy(info->version, DRV_VERSION);
3660 strcpy(info->fw_version, "N/A");
3661 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
3664 static const struct sky2_stat {
3665 char name[ETH_GSTRING_LEN];
3668 { "tx_bytes", GM_TXO_OK_HI },
3669 { "rx_bytes", GM_RXO_OK_HI },
3670 { "tx_broadcast", GM_TXF_BC_OK },
3671 { "rx_broadcast", GM_RXF_BC_OK },
3672 { "tx_multicast", GM_TXF_MC_OK },
3673 { "rx_multicast", GM_RXF_MC_OK },
3674 { "tx_unicast", GM_TXF_UC_OK },
3675 { "rx_unicast", GM_RXF_UC_OK },
3676 { "tx_mac_pause", GM_TXF_MPAUSE },
3677 { "rx_mac_pause", GM_RXF_MPAUSE },
3678 { "collisions", GM_TXF_COL },
3679 { "late_collision",GM_TXF_LAT_COL },
3680 { "aborted", GM_TXF_ABO_COL },
3681 { "single_collisions", GM_TXF_SNG_COL },
3682 { "multi_collisions", GM_TXF_MUL_COL },
3684 { "rx_short", GM_RXF_SHT },
3685 { "rx_runt", GM_RXE_FRAG },
3686 { "rx_64_byte_packets", GM_RXF_64B },
3687 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3688 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3689 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3690 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3691 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3692 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3693 { "rx_too_long", GM_RXF_LNG_ERR },
3694 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3695 { "rx_jabber", GM_RXF_JAB_PKT },
3696 { "rx_fcs_error", GM_RXF_FCS_ERR },
3698 { "tx_64_byte_packets", GM_TXF_64B },
3699 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3700 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3701 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3702 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3703 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3704 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3705 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3708 static u32 sky2_get_msglevel(struct net_device *netdev)
3710 struct sky2_port *sky2 = netdev_priv(netdev);
3711 return sky2->msg_enable;
3714 static int sky2_nway_reset(struct net_device *dev)
3716 struct sky2_port *sky2 = netdev_priv(dev);
3718 if (!netif_running(dev) || !(sky2->flags & SKY2_FLAG_AUTO_SPEED))
3721 sky2_phy_reinit(sky2);
3722 sky2_set_multicast(dev);
3727 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3729 struct sky2_hw *hw = sky2->hw;
3730 unsigned port = sky2->port;
3733 data[0] = get_stats64(hw, port, GM_TXO_OK_LO);
3734 data[1] = get_stats64(hw, port, GM_RXO_OK_LO);
3736 for (i = 2; i < count; i++)
3737 data[i] = get_stats32(hw, port, sky2_stats[i].offset);
3740 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3742 struct sky2_port *sky2 = netdev_priv(netdev);
3743 sky2->msg_enable = value;
3746 static int sky2_get_sset_count(struct net_device *dev, int sset)
3750 return ARRAY_SIZE(sky2_stats);
3756 static void sky2_get_ethtool_stats(struct net_device *dev,
3757 struct ethtool_stats *stats, u64 * data)
3759 struct sky2_port *sky2 = netdev_priv(dev);
3761 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3764 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3768 switch (stringset) {
3770 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3771 memcpy(data + i * ETH_GSTRING_LEN,
3772 sky2_stats[i].name, ETH_GSTRING_LEN);
3777 static int sky2_set_mac_address(struct net_device *dev, void *p)
3779 struct sky2_port *sky2 = netdev_priv(dev);
3780 struct sky2_hw *hw = sky2->hw;
3781 unsigned port = sky2->port;
3782 const struct sockaddr *addr = p;
3784 if (!is_valid_ether_addr(addr->sa_data))
3785 return -EADDRNOTAVAIL;
3787 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3788 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3789 dev->dev_addr, ETH_ALEN);
3790 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3791 dev->dev_addr, ETH_ALEN);
3793 /* virtual address for data */
3794 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3796 /* physical address: used for pause frames */
3797 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3802 static inline void sky2_add_filter(u8 filter[8], const u8 *addr)
3806 bit = ether_crc(ETH_ALEN, addr) & 63;
3807 filter[bit >> 3] |= 1 << (bit & 7);
3810 static void sky2_set_multicast(struct net_device *dev)
3812 struct sky2_port *sky2 = netdev_priv(dev);
3813 struct sky2_hw *hw = sky2->hw;
3814 unsigned port = sky2->port;
3815 struct netdev_hw_addr *ha;
3819 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3821 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3822 memset(filter, 0, sizeof(filter));
3824 reg = gma_read16(hw, port, GM_RX_CTRL);
3825 reg |= GM_RXCR_UCF_ENA;
3827 if (dev->flags & IFF_PROMISC) /* promiscuous */
3828 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3829 else if (dev->flags & IFF_ALLMULTI)
3830 memset(filter, 0xff, sizeof(filter));
3831 else if (netdev_mc_empty(dev) && !rx_pause)
3832 reg &= ~GM_RXCR_MCF_ENA;
3834 reg |= GM_RXCR_MCF_ENA;
3837 sky2_add_filter(filter, pause_mc_addr);
3839 netdev_for_each_mc_addr(ha, dev)
3840 sky2_add_filter(filter, ha->addr);
3843 gma_write16(hw, port, GM_MC_ADDR_H1,
3844 (u16) filter[0] | ((u16) filter[1] << 8));
3845 gma_write16(hw, port, GM_MC_ADDR_H2,
3846 (u16) filter[2] | ((u16) filter[3] << 8));
3847 gma_write16(hw, port, GM_MC_ADDR_H3,
3848 (u16) filter[4] | ((u16) filter[5] << 8));
3849 gma_write16(hw, port, GM_MC_ADDR_H4,
3850 (u16) filter[6] | ((u16) filter[7] << 8));
3852 gma_write16(hw, port, GM_RX_CTRL, reg);
3855 static struct rtnl_link_stats64 *sky2_get_stats(struct net_device *dev,
3856 struct rtnl_link_stats64 *stats)
3858 struct sky2_port *sky2 = netdev_priv(dev);
3859 struct sky2_hw *hw = sky2->hw;
3860 unsigned port = sky2->port;
3862 u64 _bytes, _packets;
3865 start = u64_stats_fetch_begin_bh(&sky2->rx_stats.syncp);
3866 _bytes = sky2->rx_stats.bytes;
3867 _packets = sky2->rx_stats.packets;
3868 } while (u64_stats_fetch_retry_bh(&sky2->rx_stats.syncp, start));
3870 stats->rx_packets = _packets;
3871 stats->rx_bytes = _bytes;
3874 start = u64_stats_fetch_begin_bh(&sky2->tx_stats.syncp);
3875 _bytes = sky2->tx_stats.bytes;
3876 _packets = sky2->tx_stats.packets;
3877 } while (u64_stats_fetch_retry_bh(&sky2->tx_stats.syncp, start));
3879 stats->tx_packets = _packets;
3880 stats->tx_bytes = _bytes;
3882 stats->multicast = get_stats32(hw, port, GM_RXF_MC_OK)
3883 + get_stats32(hw, port, GM_RXF_BC_OK);
3885 stats->collisions = get_stats32(hw, port, GM_TXF_COL);
3887 stats->rx_length_errors = get_stats32(hw, port, GM_RXF_LNG_ERR);
3888 stats->rx_crc_errors = get_stats32(hw, port, GM_RXF_FCS_ERR);
3889 stats->rx_frame_errors = get_stats32(hw, port, GM_RXF_SHT)
3890 + get_stats32(hw, port, GM_RXE_FRAG);
3891 stats->rx_over_errors = get_stats32(hw, port, GM_RXE_FIFO_OV);
3893 stats->rx_dropped = dev->stats.rx_dropped;
3894 stats->rx_fifo_errors = dev->stats.rx_fifo_errors;
3895 stats->tx_fifo_errors = dev->stats.tx_fifo_errors;
3900 /* Can have one global because blinking is controlled by
3901 * ethtool and that is always under RTNL mutex
3903 static void sky2_led(struct sky2_port *sky2, enum led_mode mode)
3905 struct sky2_hw *hw = sky2->hw;
3906 unsigned port = sky2->port;
3908 spin_lock_bh(&sky2->phy_lock);
3909 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3910 hw->chip_id == CHIP_ID_YUKON_EX ||
3911 hw->chip_id == CHIP_ID_YUKON_SUPR) {
3913 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3914 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3918 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3919 PHY_M_LEDC_LOS_CTRL(8) |
3920 PHY_M_LEDC_INIT_CTRL(8) |
3921 PHY_M_LEDC_STA1_CTRL(8) |
3922 PHY_M_LEDC_STA0_CTRL(8));
3925 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3926 PHY_M_LEDC_LOS_CTRL(9) |
3927 PHY_M_LEDC_INIT_CTRL(9) |
3928 PHY_M_LEDC_STA1_CTRL(9) |
3929 PHY_M_LEDC_STA0_CTRL(9));
3932 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3933 PHY_M_LEDC_LOS_CTRL(0xa) |
3934 PHY_M_LEDC_INIT_CTRL(0xa) |
3935 PHY_M_LEDC_STA1_CTRL(0xa) |
3936 PHY_M_LEDC_STA0_CTRL(0xa));
3939 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3940 PHY_M_LEDC_LOS_CTRL(1) |
3941 PHY_M_LEDC_INIT_CTRL(8) |
3942 PHY_M_LEDC_STA1_CTRL(7) |
3943 PHY_M_LEDC_STA0_CTRL(7));
3946 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3948 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3949 PHY_M_LED_MO_DUP(mode) |
3950 PHY_M_LED_MO_10(mode) |
3951 PHY_M_LED_MO_100(mode) |
3952 PHY_M_LED_MO_1000(mode) |
3953 PHY_M_LED_MO_RX(mode) |
3954 PHY_M_LED_MO_TX(mode));
3956 spin_unlock_bh(&sky2->phy_lock);
3959 /* blink LED's for finding board */
3960 static int sky2_set_phys_id(struct net_device *dev,
3961 enum ethtool_phys_id_state state)
3963 struct sky2_port *sky2 = netdev_priv(dev);
3966 case ETHTOOL_ID_ACTIVE:
3967 return 1; /* cycle on/off once per second */
3968 case ETHTOOL_ID_INACTIVE:
3969 sky2_led(sky2, MO_LED_NORM);
3972 sky2_led(sky2, MO_LED_ON);
3974 case ETHTOOL_ID_OFF:
3975 sky2_led(sky2, MO_LED_OFF);
3982 static void sky2_get_pauseparam(struct net_device *dev,
3983 struct ethtool_pauseparam *ecmd)
3985 struct sky2_port *sky2 = netdev_priv(dev);
3987 switch (sky2->flow_mode) {
3989 ecmd->tx_pause = ecmd->rx_pause = 0;
3992 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
3995 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
3998 ecmd->tx_pause = ecmd->rx_pause = 1;
4001 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_PAUSE)
4002 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
4005 static int sky2_set_pauseparam(struct net_device *dev,
4006 struct ethtool_pauseparam *ecmd)
4008 struct sky2_port *sky2 = netdev_priv(dev);
4010 if (ecmd->autoneg == AUTONEG_ENABLE)
4011 sky2->flags |= SKY2_FLAG_AUTO_PAUSE;
4013 sky2->flags &= ~SKY2_FLAG_AUTO_PAUSE;
4015 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
4017 if (netif_running(dev))
4018 sky2_phy_reinit(sky2);
4023 static int sky2_get_coalesce(struct net_device *dev,
4024 struct ethtool_coalesce *ecmd)
4026 struct sky2_port *sky2 = netdev_priv(dev);
4027 struct sky2_hw *hw = sky2->hw;
4029 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
4030 ecmd->tx_coalesce_usecs = 0;
4032 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
4033 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
4035 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
4037 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
4038 ecmd->rx_coalesce_usecs = 0;
4040 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
4041 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
4043 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
4045 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
4046 ecmd->rx_coalesce_usecs_irq = 0;
4048 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
4049 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
4052 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
4057 /* Note: this affect both ports */
4058 static int sky2_set_coalesce(struct net_device *dev,
4059 struct ethtool_coalesce *ecmd)
4061 struct sky2_port *sky2 = netdev_priv(dev);
4062 struct sky2_hw *hw = sky2->hw;
4063 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
4065 if (ecmd->tx_coalesce_usecs > tmax ||
4066 ecmd->rx_coalesce_usecs > tmax ||
4067 ecmd->rx_coalesce_usecs_irq > tmax)
4070 if (ecmd->tx_max_coalesced_frames >= sky2->tx_ring_size-1)
4072 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
4074 if (ecmd->rx_max_coalesced_frames_irq > RX_MAX_PENDING)
4077 if (ecmd->tx_coalesce_usecs == 0)
4078 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
4080 sky2_write32(hw, STAT_TX_TIMER_INI,
4081 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
4082 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
4084 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
4086 if (ecmd->rx_coalesce_usecs == 0)
4087 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
4089 sky2_write32(hw, STAT_LEV_TIMER_INI,
4090 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
4091 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
4093 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
4095 if (ecmd->rx_coalesce_usecs_irq == 0)
4096 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
4098 sky2_write32(hw, STAT_ISR_TIMER_INI,
4099 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
4100 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
4102 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
4107 * Hardware is limited to min of 128 and max of 2048 for ring size
4108 * and rounded up to next power of two
4109 * to avoid division in modulus calclation
4111 static unsigned long roundup_ring_size(unsigned long pending)
4113 return max(128ul, roundup_pow_of_two(pending+1));
4116 static void sky2_get_ringparam(struct net_device *dev,
4117 struct ethtool_ringparam *ering)
4119 struct sky2_port *sky2 = netdev_priv(dev);
4121 ering->rx_max_pending = RX_MAX_PENDING;
4122 ering->tx_max_pending = TX_MAX_PENDING;
4124 ering->rx_pending = sky2->rx_pending;
4125 ering->tx_pending = sky2->tx_pending;
4128 static int sky2_set_ringparam(struct net_device *dev,
4129 struct ethtool_ringparam *ering)
4131 struct sky2_port *sky2 = netdev_priv(dev);
4133 if (ering->rx_pending > RX_MAX_PENDING ||
4134 ering->rx_pending < 8 ||
4135 ering->tx_pending < TX_MIN_PENDING ||
4136 ering->tx_pending > TX_MAX_PENDING)
4141 sky2->rx_pending = ering->rx_pending;
4142 sky2->tx_pending = ering->tx_pending;
4143 sky2->tx_ring_size = roundup_ring_size(sky2->tx_pending);
4145 return sky2_reattach(dev);
4148 static int sky2_get_regs_len(struct net_device *dev)
4153 static int sky2_reg_access_ok(struct sky2_hw *hw, unsigned int b)
4155 /* This complicated switch statement is to make sure and
4156 * only access regions that are unreserved.
4157 * Some blocks are only valid on dual port cards.
4161 case 5: /* Tx Arbiter 2 */
4163 case 14 ... 15: /* TX2 */
4164 case 17: case 19: /* Ram Buffer 2 */
4165 case 22 ... 23: /* Tx Ram Buffer 2 */
4166 case 25: /* Rx MAC Fifo 1 */
4167 case 27: /* Tx MAC Fifo 2 */
4168 case 31: /* GPHY 2 */
4169 case 40 ... 47: /* Pattern Ram 2 */
4170 case 52: case 54: /* TCP Segmentation 2 */
4171 case 112 ... 116: /* GMAC 2 */
4172 return hw->ports > 1;
4174 case 0: /* Control */
4175 case 2: /* Mac address */
4176 case 4: /* Tx Arbiter 1 */
4177 case 7: /* PCI express reg */
4179 case 12 ... 13: /* TX1 */
4180 case 16: case 18:/* Rx Ram Buffer 1 */
4181 case 20 ... 21: /* Tx Ram Buffer 1 */
4182 case 24: /* Rx MAC Fifo 1 */
4183 case 26: /* Tx MAC Fifo 1 */
4184 case 28 ... 29: /* Descriptor and status unit */
4185 case 30: /* GPHY 1*/
4186 case 32 ... 39: /* Pattern Ram 1 */
4187 case 48: case 50: /* TCP Segmentation 1 */
4188 case 56 ... 60: /* PCI space */
4189 case 80 ... 84: /* GMAC 1 */
4198 * Returns copy of control register region
4199 * Note: ethtool_get_regs always provides full size (16k) buffer
4201 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
4204 const struct sky2_port *sky2 = netdev_priv(dev);
4205 const void __iomem *io = sky2->hw->regs;
4210 for (b = 0; b < 128; b++) {
4211 /* skip poisonous diagnostic ram region in block 3 */
4213 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
4214 else if (sky2_reg_access_ok(sky2->hw, b))
4215 memcpy_fromio(p, io, 128);
4224 static int sky2_get_eeprom_len(struct net_device *dev)
4226 struct sky2_port *sky2 = netdev_priv(dev);
4227 struct sky2_hw *hw = sky2->hw;
4230 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4231 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4234 static int sky2_vpd_wait(const struct sky2_hw *hw, int cap, u16 busy)
4236 unsigned long start = jiffies;
4238 while ( (sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F) == busy) {
4239 /* Can take up to 10.6 ms for write */
4240 if (time_after(jiffies, start + HZ/4)) {
4241 dev_err(&hw->pdev->dev, "VPD cycle timed out\n");
4250 static int sky2_vpd_read(struct sky2_hw *hw, int cap, void *data,
4251 u16 offset, size_t length)
4255 while (length > 0) {
4258 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
4259 rc = sky2_vpd_wait(hw, cap, 0);
4263 val = sky2_pci_read32(hw, cap + PCI_VPD_DATA);
4265 memcpy(data, &val, min(sizeof(val), length));
4266 offset += sizeof(u32);
4267 data += sizeof(u32);
4268 length -= sizeof(u32);
4274 static int sky2_vpd_write(struct sky2_hw *hw, int cap, const void *data,
4275 u16 offset, unsigned int length)
4280 for (i = 0; i < length; i += sizeof(u32)) {
4281 u32 val = *(u32 *)(data + i);
4283 sky2_pci_write32(hw, cap + PCI_VPD_DATA, val);
4284 sky2_pci_write32(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
4286 rc = sky2_vpd_wait(hw, cap, PCI_VPD_ADDR_F);
4293 static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4296 struct sky2_port *sky2 = netdev_priv(dev);
4297 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4302 eeprom->magic = SKY2_EEPROM_MAGIC;
4304 return sky2_vpd_read(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4307 static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4310 struct sky2_port *sky2 = netdev_priv(dev);
4311 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4316 if (eeprom->magic != SKY2_EEPROM_MAGIC)
4319 /* Partial writes not supported */
4320 if ((eeprom->offset & 3) || (eeprom->len & 3))
4323 return sky2_vpd_write(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4326 static u32 sky2_fix_features(struct net_device *dev, u32 features)
4328 const struct sky2_port *sky2 = netdev_priv(dev);
4329 const struct sky2_hw *hw = sky2->hw;
4331 /* In order to do Jumbo packets on these chips, need to turn off the
4332 * transmit store/forward. Therefore checksum offload won't work.
4334 if (dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U) {
4335 netdev_info(dev, "checksum offload not possible with jumbo frames\n");
4336 features &= ~(NETIF_F_TSO|NETIF_F_SG|NETIF_F_ALL_CSUM);
4339 /* Some hardware requires receive checksum for RSS to work. */
4340 if ( (features & NETIF_F_RXHASH) &&
4341 !(features & NETIF_F_RXCSUM) &&
4342 (sky2->hw->flags & SKY2_HW_RSS_CHKSUM)) {
4343 netdev_info(dev, "receive hashing forces receive checksum\n");
4344 features |= NETIF_F_RXCSUM;
4350 static int sky2_set_features(struct net_device *dev, u32 features)
4352 struct sky2_port *sky2 = netdev_priv(dev);
4353 u32 changed = dev->features ^ features;
4355 if (changed & NETIF_F_RXCSUM) {
4356 u32 on = features & NETIF_F_RXCSUM;
4357 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
4358 on ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
4361 if (changed & NETIF_F_RXHASH)
4362 rx_set_rss(dev, features);
4364 if (changed & (NETIF_F_HW_VLAN_TX|NETIF_F_HW_VLAN_RX))
4365 sky2_vlan_mode(dev, features);
4370 static const struct ethtool_ops sky2_ethtool_ops = {
4371 .get_settings = sky2_get_settings,
4372 .set_settings = sky2_set_settings,
4373 .get_drvinfo = sky2_get_drvinfo,
4374 .get_wol = sky2_get_wol,
4375 .set_wol = sky2_set_wol,
4376 .get_msglevel = sky2_get_msglevel,
4377 .set_msglevel = sky2_set_msglevel,
4378 .nway_reset = sky2_nway_reset,
4379 .get_regs_len = sky2_get_regs_len,
4380 .get_regs = sky2_get_regs,
4381 .get_link = ethtool_op_get_link,
4382 .get_eeprom_len = sky2_get_eeprom_len,
4383 .get_eeprom = sky2_get_eeprom,
4384 .set_eeprom = sky2_set_eeprom,
4385 .get_strings = sky2_get_strings,
4386 .get_coalesce = sky2_get_coalesce,
4387 .set_coalesce = sky2_set_coalesce,
4388 .get_ringparam = sky2_get_ringparam,
4389 .set_ringparam = sky2_set_ringparam,
4390 .get_pauseparam = sky2_get_pauseparam,
4391 .set_pauseparam = sky2_set_pauseparam,
4392 .set_phys_id = sky2_set_phys_id,
4393 .get_sset_count = sky2_get_sset_count,
4394 .get_ethtool_stats = sky2_get_ethtool_stats,
4397 #ifdef CONFIG_SKY2_DEBUG
4399 static struct dentry *sky2_debug;
4403 * Read and parse the first part of Vital Product Data
4405 #define VPD_SIZE 128
4406 #define VPD_MAGIC 0x82
4408 static const struct vpd_tag {
4412 { "PN", "Part Number" },
4413 { "EC", "Engineering Level" },
4414 { "MN", "Manufacturer" },
4415 { "SN", "Serial Number" },
4416 { "YA", "Asset Tag" },
4417 { "VL", "First Error Log Message" },
4418 { "VF", "Second Error Log Message" },
4419 { "VB", "Boot Agent ROM Configuration" },
4420 { "VE", "EFI UNDI Configuration" },
4423 static void sky2_show_vpd(struct seq_file *seq, struct sky2_hw *hw)
4431 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4432 vpd_size = 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4434 seq_printf(seq, "%s Product Data\n", pci_name(hw->pdev));
4435 buf = kmalloc(vpd_size, GFP_KERNEL);
4437 seq_puts(seq, "no memory!\n");
4441 if (pci_read_vpd(hw->pdev, 0, vpd_size, buf) < 0) {
4442 seq_puts(seq, "VPD read failed\n");
4446 if (buf[0] != VPD_MAGIC) {
4447 seq_printf(seq, "VPD tag mismatch: %#x\n", buf[0]);
4451 if (len == 0 || len > vpd_size - 4) {
4452 seq_printf(seq, "Invalid id length: %d\n", len);
4456 seq_printf(seq, "%.*s\n", len, buf + 3);
4459 while (offs < vpd_size - 4) {
4462 if (!memcmp("RW", buf + offs, 2)) /* end marker */
4464 len = buf[offs + 2];
4465 if (offs + len + 3 >= vpd_size)
4468 for (i = 0; i < ARRAY_SIZE(vpd_tags); i++) {
4469 if (!memcmp(vpd_tags[i].tag, buf + offs, 2)) {
4470 seq_printf(seq, " %s: %.*s\n",
4471 vpd_tags[i].label, len, buf + offs + 3);
4481 static int sky2_debug_show(struct seq_file *seq, void *v)
4483 struct net_device *dev = seq->private;
4484 const struct sky2_port *sky2 = netdev_priv(dev);
4485 struct sky2_hw *hw = sky2->hw;
4486 unsigned port = sky2->port;
4490 sky2_show_vpd(seq, hw);
4492 seq_printf(seq, "\nIRQ src=%x mask=%x control=%x\n",
4493 sky2_read32(hw, B0_ISRC),
4494 sky2_read32(hw, B0_IMSK),
4495 sky2_read32(hw, B0_Y2_SP_ICR));
4497 if (!netif_running(dev)) {
4498 seq_printf(seq, "network not running\n");
4502 napi_disable(&hw->napi);
4503 last = sky2_read16(hw, STAT_PUT_IDX);
4505 seq_printf(seq, "Status ring %u\n", hw->st_size);
4506 if (hw->st_idx == last)
4507 seq_puts(seq, "Status ring (empty)\n");
4509 seq_puts(seq, "Status ring\n");
4510 for (idx = hw->st_idx; idx != last && idx < hw->st_size;
4511 idx = RING_NEXT(idx, hw->st_size)) {
4512 const struct sky2_status_le *le = hw->st_le + idx;
4513 seq_printf(seq, "[%d] %#x %d %#x\n",
4514 idx, le->opcode, le->length, le->status);
4516 seq_puts(seq, "\n");
4519 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
4520 sky2->tx_cons, sky2->tx_prod,
4521 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
4522 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
4524 /* Dump contents of tx ring */
4526 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < sky2->tx_ring_size;
4527 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
4528 const struct sky2_tx_le *le = sky2->tx_le + idx;
4529 u32 a = le32_to_cpu(le->addr);
4532 seq_printf(seq, "%u:", idx);
4535 switch (le->opcode & ~HW_OWNER) {
4537 seq_printf(seq, " %#x:", a);
4540 seq_printf(seq, " mtu=%d", a);
4543 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
4546 seq_printf(seq, " csum=%#x", a);
4549 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
4552 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
4555 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
4558 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
4559 a, le16_to_cpu(le->length));
4562 if (le->ctrl & EOP) {
4563 seq_putc(seq, '\n');
4568 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
4569 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
4570 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
4571 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
4573 sky2_read32(hw, B0_Y2_SP_LISR);
4574 napi_enable(&hw->napi);
4578 static int sky2_debug_open(struct inode *inode, struct file *file)
4580 return single_open(file, sky2_debug_show, inode->i_private);
4583 static const struct file_operations sky2_debug_fops = {
4584 .owner = THIS_MODULE,
4585 .open = sky2_debug_open,
4587 .llseek = seq_lseek,
4588 .release = single_release,
4592 * Use network device events to create/remove/rename
4593 * debugfs file entries
4595 static int sky2_device_event(struct notifier_block *unused,
4596 unsigned long event, void *ptr)
4598 struct net_device *dev = ptr;
4599 struct sky2_port *sky2 = netdev_priv(dev);
4601 if (dev->netdev_ops->ndo_open != sky2_open || !sky2_debug)
4605 case NETDEV_CHANGENAME:
4606 if (sky2->debugfs) {
4607 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
4608 sky2_debug, dev->name);
4612 case NETDEV_GOING_DOWN:
4613 if (sky2->debugfs) {
4614 netdev_printk(KERN_DEBUG, dev, "remove debugfs\n");
4615 debugfs_remove(sky2->debugfs);
4616 sky2->debugfs = NULL;
4621 sky2->debugfs = debugfs_create_file(dev->name, S_IRUGO,
4624 if (IS_ERR(sky2->debugfs))
4625 sky2->debugfs = NULL;
4631 static struct notifier_block sky2_notifier = {
4632 .notifier_call = sky2_device_event,
4636 static __init void sky2_debug_init(void)
4640 ent = debugfs_create_dir("sky2", NULL);
4641 if (!ent || IS_ERR(ent))
4645 register_netdevice_notifier(&sky2_notifier);
4648 static __exit void sky2_debug_cleanup(void)
4651 unregister_netdevice_notifier(&sky2_notifier);
4652 debugfs_remove(sky2_debug);
4658 #define sky2_debug_init()
4659 #define sky2_debug_cleanup()
4662 /* Two copies of network device operations to handle special case of
4663 not allowing netpoll on second port */
4664 static const struct net_device_ops sky2_netdev_ops[2] = {
4666 .ndo_open = sky2_open,
4667 .ndo_stop = sky2_close,
4668 .ndo_start_xmit = sky2_xmit_frame,
4669 .ndo_do_ioctl = sky2_ioctl,
4670 .ndo_validate_addr = eth_validate_addr,
4671 .ndo_set_mac_address = sky2_set_mac_address,
4672 .ndo_set_rx_mode = sky2_set_multicast,
4673 .ndo_change_mtu = sky2_change_mtu,
4674 .ndo_fix_features = sky2_fix_features,
4675 .ndo_set_features = sky2_set_features,
4676 .ndo_tx_timeout = sky2_tx_timeout,
4677 .ndo_get_stats64 = sky2_get_stats,
4678 #ifdef CONFIG_NET_POLL_CONTROLLER
4679 .ndo_poll_controller = sky2_netpoll,
4683 .ndo_open = sky2_open,
4684 .ndo_stop = sky2_close,
4685 .ndo_start_xmit = sky2_xmit_frame,
4686 .ndo_do_ioctl = sky2_ioctl,
4687 .ndo_validate_addr = eth_validate_addr,
4688 .ndo_set_mac_address = sky2_set_mac_address,
4689 .ndo_set_rx_mode = sky2_set_multicast,
4690 .ndo_change_mtu = sky2_change_mtu,
4691 .ndo_fix_features = sky2_fix_features,
4692 .ndo_set_features = sky2_set_features,
4693 .ndo_tx_timeout = sky2_tx_timeout,
4694 .ndo_get_stats64 = sky2_get_stats,
4698 /* Initialize network device */
4699 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
4701 int highmem, int wol)
4703 struct sky2_port *sky2;
4704 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
4707 dev_err(&hw->pdev->dev, "etherdev alloc failed\n");
4711 SET_NETDEV_DEV(dev, &hw->pdev->dev);
4712 dev->irq = hw->pdev->irq;
4713 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
4714 dev->watchdog_timeo = TX_WATCHDOG;
4715 dev->netdev_ops = &sky2_netdev_ops[port];
4717 sky2 = netdev_priv(dev);
4720 sky2->msg_enable = netif_msg_init(debug, default_msg);
4722 /* Auto speed and flow control */
4723 sky2->flags = SKY2_FLAG_AUTO_SPEED | SKY2_FLAG_AUTO_PAUSE;
4724 if (hw->chip_id != CHIP_ID_YUKON_XL)
4725 dev->hw_features |= NETIF_F_RXCSUM;
4727 sky2->flow_mode = FC_BOTH;
4731 sky2->advertising = sky2_supported_modes(hw);
4734 spin_lock_init(&sky2->phy_lock);
4736 sky2->tx_pending = TX_DEF_PENDING;
4737 sky2->tx_ring_size = roundup_ring_size(TX_DEF_PENDING);
4738 sky2->rx_pending = RX_DEF_PENDING;
4740 hw->dev[port] = dev;
4744 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO;
4747 dev->features |= NETIF_F_HIGHDMA;
4749 /* Enable receive hashing unless hardware is known broken */
4750 if (!(hw->flags & SKY2_HW_RSS_BROKEN))
4751 dev->hw_features |= NETIF_F_RXHASH;
4753 if (!(hw->flags & SKY2_HW_VLAN_BROKEN)) {
4754 dev->hw_features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
4755 dev->vlan_features |= SKY2_VLAN_OFFLOADS;
4758 dev->features |= dev->hw_features;
4760 /* read the mac address */
4761 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
4762 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
4767 static void __devinit sky2_show_addr(struct net_device *dev)
4769 const struct sky2_port *sky2 = netdev_priv(dev);
4771 netif_info(sky2, probe, dev, "addr %pM\n", dev->dev_addr);
4774 /* Handle software interrupt used during MSI test */
4775 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
4777 struct sky2_hw *hw = dev_id;
4778 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4783 if (status & Y2_IS_IRQ_SW) {
4784 hw->flags |= SKY2_HW_USE_MSI;
4785 wake_up(&hw->msi_wait);
4786 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4788 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4793 /* Test interrupt path by forcing a a software IRQ */
4794 static int __devinit sky2_test_msi(struct sky2_hw *hw)
4796 struct pci_dev *pdev = hw->pdev;
4799 init_waitqueue_head(&hw->msi_wait);
4801 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4803 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4805 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4809 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4810 sky2_read8(hw, B0_CTST);
4812 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4814 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4815 /* MSI test failed, go back to INTx mode */
4816 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4817 "switching to INTx mode.\n");
4820 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4823 sky2_write32(hw, B0_IMSK, 0);
4824 sky2_read32(hw, B0_IMSK);
4826 free_irq(pdev->irq, hw);
4831 /* This driver supports yukon2 chipset only */
4832 static const char *sky2_name(u8 chipid, char *buf, int sz)
4834 const char *name[] = {
4836 "EC Ultra", /* 0xb4 */
4837 "Extreme", /* 0xb5 */
4841 "Supreme", /* 0xb9 */
4843 "Unknown", /* 0xbb */
4844 "Optima", /* 0xbc */
4845 "Optima Prime", /* 0xbd */
4846 "Optima 2", /* 0xbe */
4849 if (chipid >= CHIP_ID_YUKON_XL && chipid <= CHIP_ID_YUKON_OP_2)
4850 strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
4852 snprintf(buf, sz, "(chip %#x)", chipid);
4856 static int __devinit sky2_probe(struct pci_dev *pdev,
4857 const struct pci_device_id *ent)
4859 struct net_device *dev, *dev1;
4861 int err, using_dac = 0, wol_default;
4865 err = pci_enable_device(pdev);
4867 dev_err(&pdev->dev, "cannot enable PCI device\n");
4871 /* Get configuration information
4872 * Note: only regular PCI config access once to test for HW issues
4873 * other PCI access through shared memory for speed and to
4874 * avoid MMCONFIG problems.
4876 err = pci_read_config_dword(pdev, PCI_DEV_REG2, ®);
4878 dev_err(&pdev->dev, "PCI read config failed\n");
4883 dev_err(&pdev->dev, "PCI configuration read error\n");
4887 err = pci_request_regions(pdev, DRV_NAME);
4889 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4890 goto err_out_disable;
4893 pci_set_master(pdev);
4895 if (sizeof(dma_addr_t) > sizeof(u32) &&
4896 !(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))) {
4898 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4900 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4901 "for consistent allocations\n");
4902 goto err_out_free_regions;
4905 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4907 dev_err(&pdev->dev, "no usable DMA configuration\n");
4908 goto err_out_free_regions;
4914 /* The sk98lin vendor driver uses hardware byte swapping but
4915 * this driver uses software swapping.
4917 reg &= ~PCI_REV_DESC;
4918 err = pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
4920 dev_err(&pdev->dev, "PCI write config failed\n");
4921 goto err_out_free_regions;
4925 wol_default = device_may_wakeup(&pdev->dev) ? WAKE_MAGIC : 0;
4929 hw = kzalloc(sizeof(*hw) + strlen(DRV_NAME "@pci:")
4930 + strlen(pci_name(pdev)) + 1, GFP_KERNEL);
4932 dev_err(&pdev->dev, "cannot allocate hardware struct\n");
4933 goto err_out_free_regions;
4937 sprintf(hw->irq_name, DRV_NAME "@pci:%s", pci_name(pdev));
4939 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
4941 dev_err(&pdev->dev, "cannot map device registers\n");
4942 goto err_out_free_hw;
4945 err = sky2_init(hw);
4947 goto err_out_iounmap;
4949 /* ring for status responses */
4950 hw->st_size = hw->ports * roundup_pow_of_two(3*RX_MAX_PENDING + TX_MAX_PENDING);
4951 hw->st_le = pci_alloc_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
4956 dev_info(&pdev->dev, "Yukon-2 %s chip revision %d\n",
4957 sky2_name(hw->chip_id, buf1, sizeof(buf1)), hw->chip_rev);
4961 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
4964 goto err_out_free_pci;
4967 if (!disable_msi && pci_enable_msi(pdev) == 0) {
4968 err = sky2_test_msi(hw);
4969 if (err == -EOPNOTSUPP)
4970 pci_disable_msi(pdev);
4972 goto err_out_free_netdev;
4975 err = register_netdev(dev);
4977 dev_err(&pdev->dev, "cannot register net device\n");
4978 goto err_out_free_netdev;
4981 netif_carrier_off(dev);
4983 netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
4985 sky2_show_addr(dev);
4987 if (hw->ports > 1) {
4988 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
4991 goto err_out_unregister;
4994 err = register_netdev(dev1);
4996 dev_err(&pdev->dev, "cannot register second net device\n");
4997 goto err_out_free_dev1;
5000 err = sky2_setup_irq(hw, hw->irq_name);
5002 goto err_out_unregister_dev1;
5004 sky2_show_addr(dev1);
5007 setup_timer(&hw->watchdog_timer, sky2_watchdog, (unsigned long) hw);
5008 INIT_WORK(&hw->restart_work, sky2_restart);
5010 pci_set_drvdata(pdev, hw);
5011 pdev->d3_delay = 150;
5015 err_out_unregister_dev1:
5016 unregister_netdev(dev1);
5020 if (hw->flags & SKY2_HW_USE_MSI)
5021 pci_disable_msi(pdev);
5022 unregister_netdev(dev);
5023 err_out_free_netdev:
5026 pci_free_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
5027 hw->st_le, hw->st_dma);
5029 sky2_write8(hw, B0_CTST, CS_RST_SET);
5034 err_out_free_regions:
5035 pci_release_regions(pdev);
5037 pci_disable_device(pdev);
5039 pci_set_drvdata(pdev, NULL);
5043 static void __devexit sky2_remove(struct pci_dev *pdev)
5045 struct sky2_hw *hw = pci_get_drvdata(pdev);
5051 del_timer_sync(&hw->watchdog_timer);
5052 cancel_work_sync(&hw->restart_work);
5054 for (i = hw->ports-1; i >= 0; --i)
5055 unregister_netdev(hw->dev[i]);
5057 sky2_write32(hw, B0_IMSK, 0);
5058 sky2_read32(hw, B0_IMSK);
5062 sky2_write8(hw, B0_CTST, CS_RST_SET);
5063 sky2_read8(hw, B0_CTST);
5065 if (hw->ports > 1) {
5066 napi_disable(&hw->napi);
5067 free_irq(pdev->irq, hw);
5070 if (hw->flags & SKY2_HW_USE_MSI)
5071 pci_disable_msi(pdev);
5072 pci_free_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
5073 hw->st_le, hw->st_dma);
5074 pci_release_regions(pdev);
5075 pci_disable_device(pdev);
5077 for (i = hw->ports-1; i >= 0; --i)
5078 free_netdev(hw->dev[i]);
5083 pci_set_drvdata(pdev, NULL);
5086 static int sky2_suspend(struct device *dev)
5088 struct pci_dev *pdev = to_pci_dev(dev);
5089 struct sky2_hw *hw = pci_get_drvdata(pdev);
5095 del_timer_sync(&hw->watchdog_timer);
5096 cancel_work_sync(&hw->restart_work);
5101 for (i = 0; i < hw->ports; i++) {
5102 struct net_device *dev = hw->dev[i];
5103 struct sky2_port *sky2 = netdev_priv(dev);
5106 sky2_wol_init(sky2);
5115 #ifdef CONFIG_PM_SLEEP
5116 static int sky2_resume(struct device *dev)
5118 struct pci_dev *pdev = to_pci_dev(dev);
5119 struct sky2_hw *hw = pci_get_drvdata(pdev);
5125 /* Re-enable all clocks */
5126 err = pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
5128 dev_err(&pdev->dev, "PCI write config failed\n");
5140 dev_err(&pdev->dev, "resume failed (%d)\n", err);
5141 pci_disable_device(pdev);
5145 static SIMPLE_DEV_PM_OPS(sky2_pm_ops, sky2_suspend, sky2_resume);
5146 #define SKY2_PM_OPS (&sky2_pm_ops)
5150 #define SKY2_PM_OPS NULL
5153 static void sky2_shutdown(struct pci_dev *pdev)
5155 sky2_suspend(&pdev->dev);
5156 pci_wake_from_d3(pdev, device_may_wakeup(&pdev->dev));
5157 pci_set_power_state(pdev, PCI_D3hot);
5160 static struct pci_driver sky2_driver = {
5162 .id_table = sky2_id_table,
5163 .probe = sky2_probe,
5164 .remove = __devexit_p(sky2_remove),
5165 .shutdown = sky2_shutdown,
5166 .driver.pm = SKY2_PM_OPS,
5169 static int __init sky2_init_module(void)
5171 pr_info("driver version " DRV_VERSION "\n");
5174 return pci_register_driver(&sky2_driver);
5177 static void __exit sky2_cleanup_module(void)
5179 pci_unregister_driver(&sky2_driver);
5180 sky2_debug_cleanup();
5183 module_init(sky2_init_module);
5184 module_exit(sky2_cleanup_module);
5186 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
5187 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
5188 MODULE_LICENSE("GPL");
5189 MODULE_VERSION(DRV_VERSION);