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>
47 #include <linux/of_device.h>
48 #include <linux/of_net.h>
54 #define DRV_NAME "sky2"
55 #define DRV_VERSION "1.30"
58 * The Yukon II chipset takes 64 bit command blocks (called list elements)
59 * that are organized into three (receive, transmit, status) different rings
63 #define RX_LE_SIZE 1024
64 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
65 #define RX_MAX_PENDING (RX_LE_SIZE/6 - 2)
66 #define RX_DEF_PENDING RX_MAX_PENDING
68 /* This is the worst case number of transmit list elements for a single skb:
69 VLAN:GSO + CKSUM + Data + skb_frags * DMA */
70 #define MAX_SKB_TX_LE (2 + (sizeof(dma_addr_t)/sizeof(u32))*(MAX_SKB_FRAGS+1))
71 #define TX_MIN_PENDING (MAX_SKB_TX_LE+1)
72 #define TX_MAX_PENDING 1024
73 #define TX_DEF_PENDING 63
75 #define TX_WATCHDOG (5 * HZ)
76 #define NAPI_WEIGHT 64
77 #define PHY_RETRIES 1000
79 #define SKY2_EEPROM_MAGIC 0x9955aabb
81 #define RING_NEXT(x, s) (((x)+1) & ((s)-1))
83 static const u32 default_msg =
84 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
85 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
86 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
88 static int debug = -1; /* defaults above */
89 module_param(debug, int, 0);
90 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
92 static int copybreak __read_mostly = 128;
93 module_param(copybreak, int, 0);
94 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
96 static int disable_msi = 0;
97 module_param(disable_msi, int, 0);
98 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
100 static int legacy_pme = 0;
101 module_param(legacy_pme, int, 0);
102 MODULE_PARM_DESC(legacy_pme, "Legacy power management");
104 static const struct pci_device_id sky2_id_table[] = {
105 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
106 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
107 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E01) }, /* SK-9E21M */
108 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
109 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
110 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
111 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B03) }, /* DGE-550T */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4354) }, /* 88E8040 */
125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4355) }, /* 88E8040T */
126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4356) }, /* 88EC033 */
127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4357) }, /* 88E8042 */
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x435A) }, /* 88E8048 */
129 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) }, /* 88E8052 */
130 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) }, /* 88E8050 */
131 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) }, /* 88E8053 */
132 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) }, /* 88E8055 */
133 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) }, /* 88E8056 */
134 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4365) }, /* 88E8070 */
135 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) }, /* 88EC036 */
136 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) }, /* 88EC032 */
137 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) }, /* 88EC034 */
138 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4369) }, /* 88EC042 */
139 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436A) }, /* 88E8058 */
140 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436B) }, /* 88E8071 */
141 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436C) }, /* 88E8072 */
142 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436D) }, /* 88E8055 */
143 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4370) }, /* 88E8075 */
144 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4380) }, /* 88E8057 */
145 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4381) }, /* 88E8059 */
146 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4382) }, /* 88E8079 */
150 MODULE_DEVICE_TABLE(pci, sky2_id_table);
152 /* Avoid conditionals by using array */
153 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
154 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
155 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
157 static void sky2_set_multicast(struct net_device *dev);
158 static irqreturn_t sky2_intr(int irq, void *dev_id);
160 /* Access to PHY via serial interconnect */
161 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
165 gma_write16(hw, port, GM_SMI_DATA, val);
166 gma_write16(hw, port, GM_SMI_CTRL,
167 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
169 for (i = 0; i < PHY_RETRIES; i++) {
170 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
174 if (!(ctrl & GM_SMI_CT_BUSY))
180 dev_warn(&hw->pdev->dev, "%s: phy write timeout\n", hw->dev[port]->name);
184 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
188 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
192 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
193 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
195 for (i = 0; i < PHY_RETRIES; i++) {
196 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
200 if (ctrl & GM_SMI_CT_RD_VAL) {
201 *val = gma_read16(hw, port, GM_SMI_DATA);
208 dev_warn(&hw->pdev->dev, "%s: phy read timeout\n", hw->dev[port]->name);
211 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
215 static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
218 __gm_phy_read(hw, port, reg, &v);
223 static void sky2_power_on(struct sky2_hw *hw)
225 /* switch power to VCC (WA for VAUX problem) */
226 sky2_write8(hw, B0_POWER_CTRL,
227 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
229 /* disable Core Clock Division, */
230 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
232 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
233 /* enable bits are inverted */
234 sky2_write8(hw, B2_Y2_CLK_GATE,
235 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
236 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
237 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
239 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
241 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
244 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
246 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
247 /* set all bits to 0 except bits 15..12 and 8 */
248 reg &= P_ASPM_CONTROL_MSK;
249 sky2_pci_write32(hw, PCI_DEV_REG4, reg);
251 reg = sky2_pci_read32(hw, PCI_DEV_REG5);
252 /* set all bits to 0 except bits 28 & 27 */
253 reg &= P_CTL_TIM_VMAIN_AV_MSK;
254 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
256 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
258 sky2_write16(hw, B0_CTST, Y2_HW_WOL_ON);
260 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
261 reg = sky2_read32(hw, B2_GP_IO);
262 reg |= GLB_GPIO_STAT_RACE_DIS;
263 sky2_write32(hw, B2_GP_IO, reg);
265 sky2_read32(hw, B2_GP_IO);
268 /* Turn on "driver loaded" LED */
269 sky2_write16(hw, B0_CTST, Y2_LED_STAT_ON);
272 static void sky2_power_aux(struct sky2_hw *hw)
274 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
275 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
277 /* enable bits are inverted */
278 sky2_write8(hw, B2_Y2_CLK_GATE,
279 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
280 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
281 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
283 /* switch power to VAUX if supported and PME from D3cold */
284 if ( (sky2_read32(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
285 pci_pme_capable(hw->pdev, PCI_D3cold))
286 sky2_write8(hw, B0_POWER_CTRL,
287 (PC_VAUX_ENA | PC_VCC_ENA |
288 PC_VAUX_ON | PC_VCC_OFF));
290 /* turn off "driver loaded LED" */
291 sky2_write16(hw, B0_CTST, Y2_LED_STAT_OFF);
294 static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
298 /* disable all GMAC IRQ's */
299 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
301 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
302 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
303 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
304 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
306 reg = gma_read16(hw, port, GM_RX_CTRL);
307 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
308 gma_write16(hw, port, GM_RX_CTRL, reg);
311 /* flow control to advertise bits */
312 static const u16 copper_fc_adv[] = {
314 [FC_TX] = PHY_M_AN_ASP,
315 [FC_RX] = PHY_M_AN_PC,
316 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
319 /* flow control to advertise bits when using 1000BaseX */
320 static const u16 fiber_fc_adv[] = {
321 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
322 [FC_TX] = PHY_M_P_ASYM_MD_X,
323 [FC_RX] = PHY_M_P_SYM_MD_X,
324 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
327 /* flow control to GMA disable bits */
328 static const u16 gm_fc_disable[] = {
329 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
330 [FC_TX] = GM_GPCR_FC_RX_DIS,
331 [FC_RX] = GM_GPCR_FC_TX_DIS,
336 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
338 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
339 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
341 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
342 !(hw->flags & SKY2_HW_NEWER_PHY)) {
343 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
345 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
347 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
349 /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
350 if (hw->chip_id == CHIP_ID_YUKON_EC)
351 /* set downshift counter to 3x and enable downshift */
352 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
354 /* set master & slave downshift counter to 1x */
355 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
357 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
360 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
361 if (sky2_is_copper(hw)) {
362 if (!(hw->flags & SKY2_HW_GIGABIT)) {
363 /* enable automatic crossover */
364 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
366 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
367 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
370 /* Enable Class A driver for FE+ A0 */
371 spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2);
372 spec |= PHY_M_FESC_SEL_CL_A;
373 gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec);
376 /* disable energy detect */
377 ctrl &= ~PHY_M_PC_EN_DET_MSK;
379 /* enable automatic crossover */
380 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
382 /* downshift on PHY 88E1112 and 88E1149 is changed */
383 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
384 (hw->flags & SKY2_HW_NEWER_PHY)) {
385 /* set downshift counter to 3x and enable downshift */
386 ctrl &= ~PHY_M_PC_DSC_MSK;
387 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
391 /* workaround for deviation #4.88 (CRC errors) */
392 /* disable Automatic Crossover */
394 ctrl &= ~PHY_M_PC_MDIX_MSK;
397 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
399 /* special setup for PHY 88E1112 Fiber */
400 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
401 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
403 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
404 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
405 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
406 ctrl &= ~PHY_M_MAC_MD_MSK;
407 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
408 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
410 if (hw->pmd_type == 'P') {
411 /* select page 1 to access Fiber registers */
412 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
414 /* for SFP-module set SIGDET polarity to low */
415 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
416 ctrl |= PHY_M_FIB_SIGD_POL;
417 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
420 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
428 if (sky2->flags & SKY2_FLAG_AUTO_SPEED) {
429 if (sky2_is_copper(hw)) {
430 if (sky2->advertising & ADVERTISED_1000baseT_Full)
431 ct1000 |= PHY_M_1000C_AFD;
432 if (sky2->advertising & ADVERTISED_1000baseT_Half)
433 ct1000 |= PHY_M_1000C_AHD;
434 if (sky2->advertising & ADVERTISED_100baseT_Full)
435 adv |= PHY_M_AN_100_FD;
436 if (sky2->advertising & ADVERTISED_100baseT_Half)
437 adv |= PHY_M_AN_100_HD;
438 if (sky2->advertising & ADVERTISED_10baseT_Full)
439 adv |= PHY_M_AN_10_FD;
440 if (sky2->advertising & ADVERTISED_10baseT_Half)
441 adv |= PHY_M_AN_10_HD;
443 } else { /* special defines for FIBER (88E1040S only) */
444 if (sky2->advertising & ADVERTISED_1000baseT_Full)
445 adv |= PHY_M_AN_1000X_AFD;
446 if (sky2->advertising & ADVERTISED_1000baseT_Half)
447 adv |= PHY_M_AN_1000X_AHD;
450 /* Restart Auto-negotiation */
451 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
453 /* forced speed/duplex settings */
454 ct1000 = PHY_M_1000C_MSE;
456 /* Disable auto update for duplex flow control and duplex */
457 reg |= GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_SPD_DIS;
459 switch (sky2->speed) {
461 ctrl |= PHY_CT_SP1000;
462 reg |= GM_GPCR_SPEED_1000;
465 ctrl |= PHY_CT_SP100;
466 reg |= GM_GPCR_SPEED_100;
470 if (sky2->duplex == DUPLEX_FULL) {
471 reg |= GM_GPCR_DUP_FULL;
472 ctrl |= PHY_CT_DUP_MD;
473 } else if (sky2->speed < SPEED_1000)
474 sky2->flow_mode = FC_NONE;
477 if (sky2->flags & SKY2_FLAG_AUTO_PAUSE) {
478 if (sky2_is_copper(hw))
479 adv |= copper_fc_adv[sky2->flow_mode];
481 adv |= fiber_fc_adv[sky2->flow_mode];
483 reg |= GM_GPCR_AU_FCT_DIS;
484 reg |= gm_fc_disable[sky2->flow_mode];
486 /* Forward pause packets to GMAC? */
487 if (sky2->flow_mode & FC_RX)
488 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
490 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
493 gma_write16(hw, port, GM_GP_CTRL, reg);
495 if (hw->flags & SKY2_HW_GIGABIT)
496 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
498 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
499 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
501 /* Setup Phy LED's */
502 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
505 switch (hw->chip_id) {
506 case CHIP_ID_YUKON_FE:
507 /* on 88E3082 these bits are at 11..9 (shifted left) */
508 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
510 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
512 /* delete ACT LED control bits */
513 ctrl &= ~PHY_M_FELP_LED1_MSK;
514 /* change ACT LED control to blink mode */
515 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
516 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
519 case CHIP_ID_YUKON_FE_P:
520 /* Enable Link Partner Next Page */
521 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
522 ctrl |= PHY_M_PC_ENA_LIP_NP;
524 /* disable Energy Detect and enable scrambler */
525 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
526 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
528 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
529 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
530 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
531 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
533 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
536 case CHIP_ID_YUKON_XL:
537 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
539 /* select page 3 to access LED control register */
540 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
542 /* set LED Function Control register */
543 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
544 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
545 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
546 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
547 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
549 /* set Polarity Control register */
550 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
551 (PHY_M_POLC_LS1_P_MIX(4) |
552 PHY_M_POLC_IS0_P_MIX(4) |
553 PHY_M_POLC_LOS_CTRL(2) |
554 PHY_M_POLC_INIT_CTRL(2) |
555 PHY_M_POLC_STA1_CTRL(2) |
556 PHY_M_POLC_STA0_CTRL(2)));
558 /* restore page register */
559 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
562 case CHIP_ID_YUKON_EC_U:
563 case CHIP_ID_YUKON_EX:
564 case CHIP_ID_YUKON_SUPR:
565 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
567 /* select page 3 to access LED control register */
568 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
570 /* set LED Function Control register */
571 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
572 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
573 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
574 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
575 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
577 /* set Blink Rate in LED Timer Control Register */
578 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
579 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
580 /* restore page register */
581 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
585 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
586 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
588 /* turn off the Rx LED (LED_RX) */
589 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
592 if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_UL_2) {
593 /* apply fixes in PHY AFE */
594 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
596 /* increase differential signal amplitude in 10BASE-T */
597 gm_phy_write(hw, port, 0x18, 0xaa99);
598 gm_phy_write(hw, port, 0x17, 0x2011);
600 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
601 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
602 gm_phy_write(hw, port, 0x18, 0xa204);
603 gm_phy_write(hw, port, 0x17, 0x2002);
606 /* set page register to 0 */
607 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
608 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
609 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
610 /* apply workaround for integrated resistors calibration */
611 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
612 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
613 } else if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
614 /* apply fixes in PHY AFE */
615 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00ff);
617 /* apply RDAC termination workaround */
618 gm_phy_write(hw, port, 24, 0x2800);
619 gm_phy_write(hw, port, 23, 0x2001);
621 /* set page register back to 0 */
622 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
623 } else if (hw->chip_id != CHIP_ID_YUKON_EX &&
624 hw->chip_id < CHIP_ID_YUKON_SUPR) {
625 /* no effect on Yukon-XL */
626 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
628 if (!(sky2->flags & SKY2_FLAG_AUTO_SPEED) ||
629 sky2->speed == SPEED_100) {
630 /* turn on 100 Mbps LED (LED_LINK100) */
631 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
635 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
637 } else if (hw->chip_id == CHIP_ID_YUKON_PRM &&
638 (sky2_read8(hw, B2_MAC_CFG) & 0xf) == 0x7) {
640 /* This a phy register setup workaround copied from vendor driver. */
641 static const struct {
647 /* { 0x155, 0x130b },*/
653 /* { 0x154, 0x2f39 },*/
657 /* { 0x158, 0x1223 },*/
664 /* Start Workaround for OptimaEEE Rev.Z0 */
665 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00fb);
667 gm_phy_write(hw, port, 1, 0x4099);
668 gm_phy_write(hw, port, 3, 0x1120);
669 gm_phy_write(hw, port, 11, 0x113c);
670 gm_phy_write(hw, port, 14, 0x8100);
671 gm_phy_write(hw, port, 15, 0x112a);
672 gm_phy_write(hw, port, 17, 0x1008);
674 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00fc);
675 gm_phy_write(hw, port, 1, 0x20b0);
677 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00ff);
679 for (i = 0; i < ARRAY_SIZE(eee_afe); i++) {
680 /* apply AFE settings */
681 gm_phy_write(hw, port, 17, eee_afe[i].val);
682 gm_phy_write(hw, port, 16, eee_afe[i].reg | 1u<<13);
685 /* End Workaround for OptimaEEE */
686 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
688 /* Enable 10Base-Te (EEE) */
689 if (hw->chip_id >= CHIP_ID_YUKON_PRM) {
690 reg = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
691 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL,
692 reg | PHY_M_10B_TE_ENABLE);
696 /* Enable phy interrupt on auto-negotiation complete (or link up) */
697 if (sky2->flags & SKY2_FLAG_AUTO_SPEED)
698 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
700 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
703 static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
704 static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
706 static void sky2_phy_power_up(struct sky2_hw *hw, unsigned port)
710 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
711 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
712 reg1 &= ~phy_power[port];
714 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
715 reg1 |= coma_mode[port];
717 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
718 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
719 sky2_pci_read32(hw, PCI_DEV_REG1);
721 if (hw->chip_id == CHIP_ID_YUKON_FE)
722 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_ANE);
723 else if (hw->flags & SKY2_HW_ADV_POWER_CTL)
724 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
727 static void sky2_phy_power_down(struct sky2_hw *hw, unsigned port)
732 /* release GPHY Control reset */
733 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
735 /* release GMAC reset */
736 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
738 if (hw->flags & SKY2_HW_NEWER_PHY) {
739 /* select page 2 to access MAC control register */
740 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
742 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
743 /* allow GMII Power Down */
744 ctrl &= ~PHY_M_MAC_GMIF_PUP;
745 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
747 /* set page register back to 0 */
748 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
751 /* setup General Purpose Control Register */
752 gma_write16(hw, port, GM_GP_CTRL,
753 GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 |
754 GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_FCT_DIS |
757 if (hw->chip_id != CHIP_ID_YUKON_EC) {
758 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
759 /* select page 2 to access MAC control register */
760 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
762 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
763 /* enable Power Down */
764 ctrl |= PHY_M_PC_POW_D_ENA;
765 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
767 /* set page register back to 0 */
768 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
771 /* set IEEE compatible Power Down Mode (dev. #4.99) */
772 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_PDOWN);
775 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
776 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
777 reg1 |= phy_power[port]; /* set PHY to PowerDown/COMA Mode */
778 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
779 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
782 /* configure IPG according to used link speed */
783 static void sky2_set_ipg(struct sky2_port *sky2)
787 reg = gma_read16(sky2->hw, sky2->port, GM_SERIAL_MODE);
788 reg &= ~GM_SMOD_IPG_MSK;
789 if (sky2->speed > SPEED_100)
790 reg |= IPG_DATA_VAL(IPG_DATA_DEF_1000);
792 reg |= IPG_DATA_VAL(IPG_DATA_DEF_10_100);
793 gma_write16(sky2->hw, sky2->port, GM_SERIAL_MODE, reg);
797 static void sky2_enable_rx_tx(struct sky2_port *sky2)
799 struct sky2_hw *hw = sky2->hw;
800 unsigned port = sky2->port;
803 reg = gma_read16(hw, port, GM_GP_CTRL);
804 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
805 gma_write16(hw, port, GM_GP_CTRL, reg);
808 /* Force a renegotiation */
809 static void sky2_phy_reinit(struct sky2_port *sky2)
811 spin_lock_bh(&sky2->phy_lock);
812 sky2_phy_init(sky2->hw, sky2->port);
813 sky2_enable_rx_tx(sky2);
814 spin_unlock_bh(&sky2->phy_lock);
817 /* Put device in state to listen for Wake On Lan */
818 static void sky2_wol_init(struct sky2_port *sky2)
820 struct sky2_hw *hw = sky2->hw;
821 unsigned port = sky2->port;
822 enum flow_control save_mode;
825 /* Bring hardware out of reset */
826 sky2_write16(hw, B0_CTST, CS_RST_CLR);
827 sky2_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
829 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
830 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
833 * sky2_reset will re-enable on resume
835 save_mode = sky2->flow_mode;
836 ctrl = sky2->advertising;
838 sky2->advertising &= ~(ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full);
839 sky2->flow_mode = FC_NONE;
841 spin_lock_bh(&sky2->phy_lock);
842 sky2_phy_power_up(hw, port);
843 sky2_phy_init(hw, port);
844 spin_unlock_bh(&sky2->phy_lock);
846 sky2->flow_mode = save_mode;
847 sky2->advertising = ctrl;
849 /* Set GMAC to no flow control and auto update for speed/duplex */
850 gma_write16(hw, port, GM_GP_CTRL,
851 GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
852 GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
854 /* Set WOL address */
855 memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
856 sky2->netdev->dev_addr, ETH_ALEN);
858 /* Turn on appropriate WOL control bits */
859 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
861 if (sky2->wol & WAKE_PHY)
862 ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
864 ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
866 if (sky2->wol & WAKE_MAGIC)
867 ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
869 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;
871 ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
872 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
874 /* Disable PiG firmware */
875 sky2_write16(hw, B0_CTST, Y2_HW_WOL_OFF);
877 /* Needed by some broken BIOSes, use PCI rather than PCI-e for WOL */
879 u32 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
880 reg1 |= PCI_Y2_PME_LEGACY;
881 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
885 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
886 sky2_read32(hw, B0_CTST);
889 static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
891 struct net_device *dev = hw->dev[port];
893 if ( (hw->chip_id == CHIP_ID_YUKON_EX &&
894 hw->chip_rev != CHIP_REV_YU_EX_A0) ||
895 hw->chip_id >= CHIP_ID_YUKON_FE_P) {
896 /* Yukon-Extreme B0 and further Extreme devices */
897 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
898 } else if (dev->mtu > ETH_DATA_LEN) {
899 /* set Tx GMAC FIFO Almost Empty Threshold */
900 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
901 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
903 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
905 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
908 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
910 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
914 const u8 *addr = hw->dev[port]->dev_addr;
916 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
917 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
919 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
921 if (hw->chip_id == CHIP_ID_YUKON_XL &&
922 hw->chip_rev == CHIP_REV_YU_XL_A0 &&
924 /* WA DEV_472 -- looks like crossed wires on port 2 */
925 /* clear GMAC 1 Control reset */
926 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
928 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
929 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
930 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
931 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
932 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
935 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
937 /* Enable Transmit FIFO Underrun */
938 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
940 spin_lock_bh(&sky2->phy_lock);
941 sky2_phy_power_up(hw, port);
942 sky2_phy_init(hw, port);
943 spin_unlock_bh(&sky2->phy_lock);
946 reg = gma_read16(hw, port, GM_PHY_ADDR);
947 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
949 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
950 gma_read16(hw, port, i);
951 gma_write16(hw, port, GM_PHY_ADDR, reg);
953 /* transmit control */
954 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
956 /* receive control reg: unicast + multicast + no FCS */
957 gma_write16(hw, port, GM_RX_CTRL,
958 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
960 /* transmit flow control */
961 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
963 /* transmit parameter */
964 gma_write16(hw, port, GM_TX_PARAM,
965 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
966 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
967 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
968 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
970 /* serial mode register */
971 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
972 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF_1000);
974 if (hw->dev[port]->mtu > ETH_DATA_LEN)
975 reg |= GM_SMOD_JUMBO_ENA;
977 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
978 hw->chip_rev == CHIP_REV_YU_EC_U_B1)
979 reg |= GM_NEW_FLOW_CTRL;
981 gma_write16(hw, port, GM_SERIAL_MODE, reg);
983 /* virtual address for data */
984 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
986 /* physical address: used for pause frames */
987 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
989 /* ignore counter overflows */
990 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
991 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
992 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
994 /* Configure Rx MAC FIFO */
995 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
996 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
997 if (hw->chip_id == CHIP_ID_YUKON_EX ||
998 hw->chip_id == CHIP_ID_YUKON_FE_P)
999 rx_reg |= GMF_RX_OVER_ON;
1001 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
1003 if (hw->chip_id == CHIP_ID_YUKON_XL) {
1004 /* Hardware errata - clear flush mask */
1005 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0);
1007 /* Flush Rx MAC FIFO on any flow control or error */
1008 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
1011 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
1012 reg = RX_GMF_FL_THR_DEF + 1;
1013 /* Another magic mystery workaround from sk98lin */
1014 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
1015 hw->chip_rev == CHIP_REV_YU_FE2_A0)
1017 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
1019 /* Configure Tx MAC FIFO */
1020 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
1021 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
1023 /* On chips without ram buffer, pause is controlled by MAC level */
1024 if (!(hw->flags & SKY2_HW_RAM_BUFFER)) {
1025 /* Pause threshold is scaled by 8 in bytes */
1026 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
1027 hw->chip_rev == CHIP_REV_YU_FE2_A0)
1031 sky2_write16(hw, SK_REG(port, RX_GMF_UP_THR), reg);
1032 sky2_write16(hw, SK_REG(port, RX_GMF_LP_THR), 768 / 8);
1034 sky2_set_tx_stfwd(hw, port);
1037 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
1038 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
1039 /* disable dynamic watermark */
1040 reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA));
1041 reg &= ~TX_DYN_WM_ENA;
1042 sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg);
1046 /* Assign Ram Buffer allocation to queue */
1047 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
1051 /* convert from K bytes to qwords used for hw register */
1054 end = start + space - 1;
1056 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
1057 sky2_write32(hw, RB_ADDR(q, RB_START), start);
1058 sky2_write32(hw, RB_ADDR(q, RB_END), end);
1059 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
1060 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
1062 if (q == Q_R1 || q == Q_R2) {
1063 u32 tp = space - space/4;
1065 /* On receive queue's set the thresholds
1066 * give receiver priority when > 3/4 full
1067 * send pause when down to 2K
1069 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
1070 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
1072 tp = space - 8192/8;
1073 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
1074 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
1076 /* Enable store & forward on Tx queue's because
1077 * Tx FIFO is only 1K on Yukon
1079 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
1082 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
1083 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
1086 /* Setup Bus Memory Interface */
1087 static void sky2_qset(struct sky2_hw *hw, u16 q)
1089 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
1090 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
1091 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
1092 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
1095 /* Setup prefetch unit registers. This is the interface between
1096 * hardware and driver list elements
1098 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
1099 dma_addr_t addr, u32 last)
1101 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1102 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
1103 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), upper_32_bits(addr));
1104 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), lower_32_bits(addr));
1105 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
1106 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
1108 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
1111 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2, u16 *slot)
1113 struct sky2_tx_le *le = sky2->tx_le + *slot;
1115 *slot = RING_NEXT(*slot, sky2->tx_ring_size);
1120 static void tx_init(struct sky2_port *sky2)
1122 struct sky2_tx_le *le;
1124 sky2->tx_prod = sky2->tx_cons = 0;
1125 sky2->tx_tcpsum = 0;
1126 sky2->tx_last_mss = 0;
1127 netdev_reset_queue(sky2->netdev);
1129 le = get_tx_le(sky2, &sky2->tx_prod);
1131 le->opcode = OP_ADDR64 | HW_OWNER;
1132 sky2->tx_last_upper = 0;
1135 /* Update chip's next pointer */
1136 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
1138 /* Make sure write' to descriptors are complete before we tell hardware */
1140 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
1142 /* Synchronize I/O on since next processor may write to tail */
1147 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
1149 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
1150 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
1155 static unsigned sky2_get_rx_threshold(struct sky2_port *sky2)
1159 /* Space needed for frame data + headers rounded up */
1160 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1162 /* Stopping point for hardware truncation */
1163 return (size - 8) / sizeof(u32);
1166 static unsigned sky2_get_rx_data_size(struct sky2_port *sky2)
1168 struct rx_ring_info *re;
1171 /* Space needed for frame data + headers rounded up */
1172 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1174 sky2->rx_nfrags = size >> PAGE_SHIFT;
1175 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1177 /* Compute residue after pages */
1178 size -= sky2->rx_nfrags << PAGE_SHIFT;
1180 /* Optimize to handle small packets and headers */
1181 if (size < copybreak)
1183 if (size < ETH_HLEN)
1189 /* Build description to hardware for one receive segment */
1190 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
1191 dma_addr_t map, unsigned len)
1193 struct sky2_rx_le *le;
1195 if (sizeof(dma_addr_t) > sizeof(u32)) {
1196 le = sky2_next_rx(sky2);
1197 le->addr = cpu_to_le32(upper_32_bits(map));
1198 le->opcode = OP_ADDR64 | HW_OWNER;
1201 le = sky2_next_rx(sky2);
1202 le->addr = cpu_to_le32(lower_32_bits(map));
1203 le->length = cpu_to_le16(len);
1204 le->opcode = op | HW_OWNER;
1207 /* Build description to hardware for one possibly fragmented skb */
1208 static void sky2_rx_submit(struct sky2_port *sky2,
1209 const struct rx_ring_info *re)
1213 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
1215 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
1216 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
1220 static int sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
1223 struct sk_buff *skb = re->skb;
1226 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
1227 if (pci_dma_mapping_error(pdev, re->data_addr))
1230 dma_unmap_len_set(re, data_size, size);
1232 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1233 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1235 re->frag_addr[i] = skb_frag_dma_map(&pdev->dev, frag, 0,
1236 skb_frag_size(frag),
1239 if (dma_mapping_error(&pdev->dev, re->frag_addr[i]))
1240 goto map_page_error;
1246 pci_unmap_page(pdev, re->frag_addr[i],
1247 skb_frag_size(&skb_shinfo(skb)->frags[i]),
1248 PCI_DMA_FROMDEVICE);
1251 pci_unmap_single(pdev, re->data_addr, dma_unmap_len(re, data_size),
1252 PCI_DMA_FROMDEVICE);
1255 if (net_ratelimit())
1256 dev_warn(&pdev->dev, "%s: rx mapping error\n",
1261 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1263 struct sk_buff *skb = re->skb;
1266 pci_unmap_single(pdev, re->data_addr, dma_unmap_len(re, data_size),
1267 PCI_DMA_FROMDEVICE);
1269 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1270 pci_unmap_page(pdev, re->frag_addr[i],
1271 skb_frag_size(&skb_shinfo(skb)->frags[i]),
1272 PCI_DMA_FROMDEVICE);
1275 /* Tell chip where to start receive checksum.
1276 * Actually has two checksums, but set both same to avoid possible byte
1279 static void rx_set_checksum(struct sky2_port *sky2)
1281 struct sky2_rx_le *le = sky2_next_rx(sky2);
1283 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1285 le->opcode = OP_TCPSTART | HW_OWNER;
1287 sky2_write32(sky2->hw,
1288 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1289 (sky2->netdev->features & NETIF_F_RXCSUM)
1290 ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
1294 * Fixed initial key as seed to RSS.
1296 static const uint32_t rss_init_key[10] = {
1297 0x7c3351da, 0x51c5cf4e, 0x44adbdd1, 0xe8d38d18, 0x48897c43,
1298 0xb1d60e7e, 0x6a3dd760, 0x01a2e453, 0x16f46f13, 0x1a0e7b30
1301 /* Enable/disable receive hash calculation (RSS) */
1302 static void rx_set_rss(struct net_device *dev, netdev_features_t features)
1304 struct sky2_port *sky2 = netdev_priv(dev);
1305 struct sky2_hw *hw = sky2->hw;
1308 /* Supports IPv6 and other modes */
1309 if (hw->flags & SKY2_HW_NEW_LE) {
1311 sky2_write32(hw, SK_REG(sky2->port, RSS_CFG), HASH_ALL);
1314 /* Program RSS initial values */
1315 if (features & NETIF_F_RXHASH) {
1316 for (i = 0; i < nkeys; i++)
1317 sky2_write32(hw, SK_REG(sky2->port, RSS_KEY + i * 4),
1320 /* Need to turn on (undocumented) flag to make hashing work */
1321 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T),
1324 sky2_write32(hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1325 BMU_ENA_RX_RSS_HASH);
1327 sky2_write32(hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1328 BMU_DIS_RX_RSS_HASH);
1332 * The RX Stop command will not work for Yukon-2 if the BMU does not
1333 * reach the end of packet and since we can't make sure that we have
1334 * incoming data, we must reset the BMU while it is not doing a DMA
1335 * transfer. Since it is possible that the RX path is still active,
1336 * the RX RAM buffer will be stopped first, so any possible incoming
1337 * data will not trigger a DMA. After the RAM buffer is stopped, the
1338 * BMU is polled until any DMA in progress is ended and only then it
1341 static void sky2_rx_stop(struct sky2_port *sky2)
1343 struct sky2_hw *hw = sky2->hw;
1344 unsigned rxq = rxqaddr[sky2->port];
1347 /* disable the RAM Buffer receive queue */
1348 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1350 for (i = 0; i < 0xffff; i++)
1351 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1352 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1355 netdev_warn(sky2->netdev, "receiver stop failed\n");
1357 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1359 /* reset the Rx prefetch unit */
1360 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1364 /* Clean out receive buffer area, assumes receiver hardware stopped */
1365 static void sky2_rx_clean(struct sky2_port *sky2)
1369 memset(sky2->rx_le, 0, RX_LE_BYTES);
1370 for (i = 0; i < sky2->rx_pending; i++) {
1371 struct rx_ring_info *re = sky2->rx_ring + i;
1374 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1381 /* Basic MII support */
1382 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1384 struct mii_ioctl_data *data = if_mii(ifr);
1385 struct sky2_port *sky2 = netdev_priv(dev);
1386 struct sky2_hw *hw = sky2->hw;
1387 int err = -EOPNOTSUPP;
1389 if (!netif_running(dev))
1390 return -ENODEV; /* Phy still in reset */
1394 data->phy_id = PHY_ADDR_MARV;
1400 spin_lock_bh(&sky2->phy_lock);
1401 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1402 spin_unlock_bh(&sky2->phy_lock);
1404 data->val_out = val;
1409 spin_lock_bh(&sky2->phy_lock);
1410 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1412 spin_unlock_bh(&sky2->phy_lock);
1418 #define SKY2_VLAN_OFFLOADS (NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO)
1420 static void sky2_vlan_mode(struct net_device *dev, netdev_features_t features)
1422 struct sky2_port *sky2 = netdev_priv(dev);
1423 struct sky2_hw *hw = sky2->hw;
1424 u16 port = sky2->port;
1426 if (features & NETIF_F_HW_VLAN_CTAG_RX)
1427 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1430 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1433 if (features & NETIF_F_HW_VLAN_CTAG_TX) {
1434 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1437 dev->vlan_features |= SKY2_VLAN_OFFLOADS;
1439 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1442 /* Can't do transmit offload of vlan without hw vlan */
1443 dev->vlan_features &= ~SKY2_VLAN_OFFLOADS;
1447 /* Amount of required worst case padding in rx buffer */
1448 static inline unsigned sky2_rx_pad(const struct sky2_hw *hw)
1450 return (hw->flags & SKY2_HW_RAM_BUFFER) ? 8 : 2;
1454 * Allocate an skb for receiving. If the MTU is large enough
1455 * make the skb non-linear with a fragment list of pages.
1457 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2, gfp_t gfp)
1459 struct sk_buff *skb;
1462 skb = __netdev_alloc_skb(sky2->netdev,
1463 sky2->rx_data_size + sky2_rx_pad(sky2->hw),
1468 if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) {
1469 unsigned char *start;
1471 * Workaround for a bug in FIFO that cause hang
1472 * if the FIFO if the receive buffer is not 64 byte aligned.
1473 * The buffer returned from netdev_alloc_skb is
1474 * aligned except if slab debugging is enabled.
1476 start = PTR_ALIGN(skb->data, 8);
1477 skb_reserve(skb, start - skb->data);
1479 skb_reserve(skb, NET_IP_ALIGN);
1481 for (i = 0; i < sky2->rx_nfrags; i++) {
1482 struct page *page = alloc_page(gfp);
1486 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1496 static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1498 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1501 static int sky2_alloc_rx_skbs(struct sky2_port *sky2)
1503 struct sky2_hw *hw = sky2->hw;
1506 sky2->rx_data_size = sky2_get_rx_data_size(sky2);
1509 for (i = 0; i < sky2->rx_pending; i++) {
1510 struct rx_ring_info *re = sky2->rx_ring + i;
1512 re->skb = sky2_rx_alloc(sky2, GFP_KERNEL);
1516 if (sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size)) {
1517 dev_kfree_skb(re->skb);
1526 * Setup receiver buffer pool.
1527 * Normal case this ends up creating one list element for skb
1528 * in the receive ring. Worst case if using large MTU and each
1529 * allocation falls on a different 64 bit region, that results
1530 * in 6 list elements per ring entry.
1531 * One element is used for checksum enable/disable, and one
1532 * extra to avoid wrap.
1534 static void sky2_rx_start(struct sky2_port *sky2)
1536 struct sky2_hw *hw = sky2->hw;
1537 struct rx_ring_info *re;
1538 unsigned rxq = rxqaddr[sky2->port];
1541 sky2->rx_put = sky2->rx_next = 0;
1544 /* On PCI express lowering the watermark gives better performance */
1545 if (pci_is_pcie(hw->pdev))
1546 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1548 /* These chips have no ram buffer?
1549 * MAC Rx RAM Read is controlled by hardware */
1550 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1551 hw->chip_rev > CHIP_REV_YU_EC_U_A0)
1552 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1554 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1556 if (!(hw->flags & SKY2_HW_NEW_LE))
1557 rx_set_checksum(sky2);
1559 if (!(hw->flags & SKY2_HW_RSS_BROKEN))
1560 rx_set_rss(sky2->netdev, sky2->netdev->features);
1562 /* submit Rx ring */
1563 for (i = 0; i < sky2->rx_pending; i++) {
1564 re = sky2->rx_ring + i;
1565 sky2_rx_submit(sky2, re);
1569 * The receiver hangs if it receives frames larger than the
1570 * packet buffer. As a workaround, truncate oversize frames, but
1571 * the register is limited to 9 bits, so if you do frames > 2052
1572 * you better get the MTU right!
1574 thresh = sky2_get_rx_threshold(sky2);
1576 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1578 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1579 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1582 /* Tell chip about available buffers */
1583 sky2_rx_update(sky2, rxq);
1585 if (hw->chip_id == CHIP_ID_YUKON_EX ||
1586 hw->chip_id == CHIP_ID_YUKON_SUPR) {
1588 * Disable flushing of non ASF packets;
1589 * must be done after initializing the BMUs;
1590 * drivers without ASF support should do this too, otherwise
1591 * it may happen that they cannot run on ASF devices;
1592 * remember that the MAC FIFO isn't reset during initialization.
1594 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_MACSEC_FLUSH_OFF);
1597 if (hw->chip_id >= CHIP_ID_YUKON_SUPR) {
1598 /* Enable RX Home Address & Routing Header checksum fix */
1599 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_FL_CTRL),
1600 RX_IPV6_SA_MOB_ENA | RX_IPV6_DA_MOB_ENA);
1602 /* Enable TX Home Address & Routing Header checksum fix */
1603 sky2_write32(hw, Q_ADDR(txqaddr[sky2->port], Q_TEST),
1604 TBMU_TEST_HOME_ADD_FIX_EN | TBMU_TEST_ROUTING_ADD_FIX_EN);
1608 static int sky2_alloc_buffers(struct sky2_port *sky2)
1610 struct sky2_hw *hw = sky2->hw;
1612 /* must be power of 2 */
1613 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1614 sky2->tx_ring_size *
1615 sizeof(struct sky2_tx_le),
1620 sky2->tx_ring = kcalloc(sky2->tx_ring_size, sizeof(struct tx_ring_info),
1625 sky2->rx_le = pci_zalloc_consistent(hw->pdev, RX_LE_BYTES,
1630 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1635 return sky2_alloc_rx_skbs(sky2);
1640 static void sky2_free_buffers(struct sky2_port *sky2)
1642 struct sky2_hw *hw = sky2->hw;
1644 sky2_rx_clean(sky2);
1647 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1648 sky2->rx_le, sky2->rx_le_map);
1652 pci_free_consistent(hw->pdev,
1653 sky2->tx_ring_size * sizeof(struct sky2_tx_le),
1654 sky2->tx_le, sky2->tx_le_map);
1657 kfree(sky2->tx_ring);
1658 kfree(sky2->rx_ring);
1660 sky2->tx_ring = NULL;
1661 sky2->rx_ring = NULL;
1664 static void sky2_hw_up(struct sky2_port *sky2)
1666 struct sky2_hw *hw = sky2->hw;
1667 unsigned port = sky2->port;
1670 struct net_device *otherdev = hw->dev[sky2->port^1];
1675 * On dual port PCI-X card, there is an problem where status
1676 * can be received out of order due to split transactions
1678 if (otherdev && netif_running(otherdev) &&
1679 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1682 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1683 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1684 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1687 sky2_mac_init(hw, port);
1689 /* Register is number of 4K blocks on internal RAM buffer. */
1690 ramsize = sky2_read8(hw, B2_E_0) * 4;
1694 netdev_dbg(sky2->netdev, "ram buffer %dK\n", ramsize);
1696 rxspace = ramsize / 2;
1698 rxspace = 8 + (2*(ramsize - 16))/3;
1700 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1701 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1703 /* Make sure SyncQ is disabled */
1704 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1708 sky2_qset(hw, txqaddr[port]);
1710 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1711 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1712 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1714 /* Set almost empty threshold */
1715 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1716 hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1717 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1719 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1720 sky2->tx_ring_size - 1);
1722 sky2_vlan_mode(sky2->netdev, sky2->netdev->features);
1723 netdev_update_features(sky2->netdev);
1725 sky2_rx_start(sky2);
1728 /* Setup device IRQ and enable napi to process */
1729 static int sky2_setup_irq(struct sky2_hw *hw, const char *name)
1731 struct pci_dev *pdev = hw->pdev;
1734 err = request_irq(pdev->irq, sky2_intr,
1735 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
1738 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
1740 hw->flags |= SKY2_HW_IRQ_SETUP;
1742 napi_enable(&hw->napi);
1743 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
1744 sky2_read32(hw, B0_IMSK);
1751 /* Bring up network interface. */
1752 static int sky2_open(struct net_device *dev)
1754 struct sky2_port *sky2 = netdev_priv(dev);
1755 struct sky2_hw *hw = sky2->hw;
1756 unsigned port = sky2->port;
1760 netif_carrier_off(dev);
1762 err = sky2_alloc_buffers(sky2);
1766 /* With single port, IRQ is setup when device is brought up */
1767 if (hw->ports == 1 && (err = sky2_setup_irq(hw, dev->name)))
1772 /* Enable interrupts from phy/mac for port */
1773 imask = sky2_read32(hw, B0_IMSK);
1775 if (hw->chip_id == CHIP_ID_YUKON_OPT ||
1776 hw->chip_id == CHIP_ID_YUKON_PRM ||
1777 hw->chip_id == CHIP_ID_YUKON_OP_2)
1778 imask |= Y2_IS_PHY_QLNK; /* enable PHY Quick Link */
1780 imask |= portirq_msk[port];
1781 sky2_write32(hw, B0_IMSK, imask);
1782 sky2_read32(hw, B0_IMSK);
1784 netif_info(sky2, ifup, dev, "enabling interface\n");
1789 sky2_free_buffers(sky2);
1793 /* Modular subtraction in ring */
1794 static inline int tx_inuse(const struct sky2_port *sky2)
1796 return (sky2->tx_prod - sky2->tx_cons) & (sky2->tx_ring_size - 1);
1799 /* Number of list elements available for next tx */
1800 static inline int tx_avail(const struct sky2_port *sky2)
1802 return sky2->tx_pending - tx_inuse(sky2);
1805 /* Estimate of number of transmit list elements required */
1806 static unsigned tx_le_req(const struct sk_buff *skb)
1810 count = (skb_shinfo(skb)->nr_frags + 1)
1811 * (sizeof(dma_addr_t) / sizeof(u32));
1813 if (skb_is_gso(skb))
1815 else if (sizeof(dma_addr_t) == sizeof(u32))
1816 ++count; /* possible vlan */
1818 if (skb->ip_summed == CHECKSUM_PARTIAL)
1824 static void sky2_tx_unmap(struct pci_dev *pdev, struct tx_ring_info *re)
1826 if (re->flags & TX_MAP_SINGLE)
1827 pci_unmap_single(pdev, dma_unmap_addr(re, mapaddr),
1828 dma_unmap_len(re, maplen),
1830 else if (re->flags & TX_MAP_PAGE)
1831 pci_unmap_page(pdev, dma_unmap_addr(re, mapaddr),
1832 dma_unmap_len(re, maplen),
1838 * Put one packet in ring for transmit.
1839 * A single packet can generate multiple list elements, and
1840 * the number of ring elements will probably be less than the number
1841 * of list elements used.
1843 static netdev_tx_t sky2_xmit_frame(struct sk_buff *skb,
1844 struct net_device *dev)
1846 struct sky2_port *sky2 = netdev_priv(dev);
1847 struct sky2_hw *hw = sky2->hw;
1848 struct sky2_tx_le *le = NULL;
1849 struct tx_ring_info *re;
1857 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1858 return NETDEV_TX_BUSY;
1860 len = skb_headlen(skb);
1861 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1863 if (pci_dma_mapping_error(hw->pdev, mapping))
1866 slot = sky2->tx_prod;
1867 netif_printk(sky2, tx_queued, KERN_DEBUG, dev,
1868 "tx queued, slot %u, len %d\n", slot, skb->len);
1870 /* Send high bits if needed */
1871 upper = upper_32_bits(mapping);
1872 if (upper != sky2->tx_last_upper) {
1873 le = get_tx_le(sky2, &slot);
1874 le->addr = cpu_to_le32(upper);
1875 sky2->tx_last_upper = upper;
1876 le->opcode = OP_ADDR64 | HW_OWNER;
1879 /* Check for TCP Segmentation Offload */
1880 mss = skb_shinfo(skb)->gso_size;
1883 if (!(hw->flags & SKY2_HW_NEW_LE))
1884 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1886 if (mss != sky2->tx_last_mss) {
1887 le = get_tx_le(sky2, &slot);
1888 le->addr = cpu_to_le32(mss);
1890 if (hw->flags & SKY2_HW_NEW_LE)
1891 le->opcode = OP_MSS | HW_OWNER;
1893 le->opcode = OP_LRGLEN | HW_OWNER;
1894 sky2->tx_last_mss = mss;
1900 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1901 if (vlan_tx_tag_present(skb)) {
1903 le = get_tx_le(sky2, &slot);
1905 le->opcode = OP_VLAN|HW_OWNER;
1907 le->opcode |= OP_VLAN;
1908 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1912 /* Handle TCP checksum offload */
1913 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1914 /* On Yukon EX (some versions) encoding change. */
1915 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1916 ctrl |= CALSUM; /* auto checksum */
1918 const unsigned offset = skb_transport_offset(skb);
1921 tcpsum = offset << 16; /* sum start */
1922 tcpsum |= offset + skb->csum_offset; /* sum write */
1924 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1925 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1928 if (tcpsum != sky2->tx_tcpsum) {
1929 sky2->tx_tcpsum = tcpsum;
1931 le = get_tx_le(sky2, &slot);
1932 le->addr = cpu_to_le32(tcpsum);
1933 le->length = 0; /* initial checksum value */
1934 le->ctrl = 1; /* one packet */
1935 le->opcode = OP_TCPLISW | HW_OWNER;
1940 re = sky2->tx_ring + slot;
1941 re->flags = TX_MAP_SINGLE;
1942 dma_unmap_addr_set(re, mapaddr, mapping);
1943 dma_unmap_len_set(re, maplen, len);
1945 le = get_tx_le(sky2, &slot);
1946 le->addr = cpu_to_le32(lower_32_bits(mapping));
1947 le->length = cpu_to_le16(len);
1949 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1952 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1953 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1955 mapping = skb_frag_dma_map(&hw->pdev->dev, frag, 0,
1956 skb_frag_size(frag), DMA_TO_DEVICE);
1958 if (dma_mapping_error(&hw->pdev->dev, mapping))
1959 goto mapping_unwind;
1961 upper = upper_32_bits(mapping);
1962 if (upper != sky2->tx_last_upper) {
1963 le = get_tx_le(sky2, &slot);
1964 le->addr = cpu_to_le32(upper);
1965 sky2->tx_last_upper = upper;
1966 le->opcode = OP_ADDR64 | HW_OWNER;
1969 re = sky2->tx_ring + slot;
1970 re->flags = TX_MAP_PAGE;
1971 dma_unmap_addr_set(re, mapaddr, mapping);
1972 dma_unmap_len_set(re, maplen, skb_frag_size(frag));
1974 le = get_tx_le(sky2, &slot);
1975 le->addr = cpu_to_le32(lower_32_bits(mapping));
1976 le->length = cpu_to_le16(skb_frag_size(frag));
1978 le->opcode = OP_BUFFER | HW_OWNER;
1984 sky2->tx_prod = slot;
1986 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1987 netif_stop_queue(dev);
1989 netdev_sent_queue(dev, skb->len);
1990 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1992 return NETDEV_TX_OK;
1995 for (i = sky2->tx_prod; i != slot; i = RING_NEXT(i, sky2->tx_ring_size)) {
1996 re = sky2->tx_ring + i;
1998 sky2_tx_unmap(hw->pdev, re);
2002 if (net_ratelimit())
2003 dev_warn(&hw->pdev->dev, "%s: tx mapping error\n", dev->name);
2004 dev_kfree_skb_any(skb);
2005 return NETDEV_TX_OK;
2009 * Free ring elements from starting at tx_cons until "done"
2012 * 1. The hardware will tell us about partial completion of multi-part
2013 * buffers so make sure not to free skb to early.
2014 * 2. This may run in parallel start_xmit because the it only
2015 * looks at the tail of the queue of FIFO (tx_cons), not
2016 * the head (tx_prod)
2018 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
2020 struct net_device *dev = sky2->netdev;
2022 unsigned int bytes_compl = 0, pkts_compl = 0;
2024 BUG_ON(done >= sky2->tx_ring_size);
2026 for (idx = sky2->tx_cons; idx != done;
2027 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
2028 struct tx_ring_info *re = sky2->tx_ring + idx;
2029 struct sk_buff *skb = re->skb;
2031 sky2_tx_unmap(sky2->hw->pdev, re);
2034 netif_printk(sky2, tx_done, KERN_DEBUG, dev,
2035 "tx done %u\n", idx);
2038 bytes_compl += skb->len;
2041 dev_kfree_skb_any(skb);
2043 sky2->tx_next = RING_NEXT(idx, sky2->tx_ring_size);
2047 sky2->tx_cons = idx;
2050 netdev_completed_queue(dev, pkts_compl, bytes_compl);
2052 u64_stats_update_begin(&sky2->tx_stats.syncp);
2053 sky2->tx_stats.packets += pkts_compl;
2054 sky2->tx_stats.bytes += bytes_compl;
2055 u64_stats_update_end(&sky2->tx_stats.syncp);
2058 static void sky2_tx_reset(struct sky2_hw *hw, unsigned port)
2060 /* Disable Force Sync bit and Enable Alloc bit */
2061 sky2_write8(hw, SK_REG(port, TXA_CTRL),
2062 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
2064 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
2065 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
2066 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
2068 /* Reset the PCI FIFO of the async Tx queue */
2069 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
2070 BMU_RST_SET | BMU_FIFO_RST);
2072 /* Reset the Tx prefetch units */
2073 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
2076 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
2077 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
2079 sky2_read32(hw, B0_CTST);
2082 static void sky2_hw_down(struct sky2_port *sky2)
2084 struct sky2_hw *hw = sky2->hw;
2085 unsigned port = sky2->port;
2088 /* Force flow control off */
2089 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2091 /* Stop transmitter */
2092 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
2093 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
2095 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
2096 RB_RST_SET | RB_DIS_OP_MD);
2098 ctrl = gma_read16(hw, port, GM_GP_CTRL);
2099 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
2100 gma_write16(hw, port, GM_GP_CTRL, ctrl);
2102 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
2104 /* Workaround shared GMAC reset */
2105 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 &&
2106 port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
2107 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
2109 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
2111 /* Force any delayed status interrupt and NAPI */
2112 sky2_write32(hw, STAT_LEV_TIMER_CNT, 0);
2113 sky2_write32(hw, STAT_TX_TIMER_CNT, 0);
2114 sky2_write32(hw, STAT_ISR_TIMER_CNT, 0);
2115 sky2_read8(hw, STAT_ISR_TIMER_CTRL);
2119 spin_lock_bh(&sky2->phy_lock);
2120 sky2_phy_power_down(hw, port);
2121 spin_unlock_bh(&sky2->phy_lock);
2123 sky2_tx_reset(hw, port);
2125 /* Free any pending frames stuck in HW queue */
2126 sky2_tx_complete(sky2, sky2->tx_prod);
2129 /* Network shutdown */
2130 static int sky2_close(struct net_device *dev)
2132 struct sky2_port *sky2 = netdev_priv(dev);
2133 struct sky2_hw *hw = sky2->hw;
2135 /* Never really got started! */
2139 netif_info(sky2, ifdown, dev, "disabling interface\n");
2141 if (hw->ports == 1) {
2142 sky2_write32(hw, B0_IMSK, 0);
2143 sky2_read32(hw, B0_IMSK);
2145 napi_disable(&hw->napi);
2146 free_irq(hw->pdev->irq, hw);
2147 hw->flags &= ~SKY2_HW_IRQ_SETUP;
2151 /* Disable port IRQ */
2152 imask = sky2_read32(hw, B0_IMSK);
2153 imask &= ~portirq_msk[sky2->port];
2154 sky2_write32(hw, B0_IMSK, imask);
2155 sky2_read32(hw, B0_IMSK);
2157 synchronize_irq(hw->pdev->irq);
2158 napi_synchronize(&hw->napi);
2163 sky2_free_buffers(sky2);
2168 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
2170 if (hw->flags & SKY2_HW_FIBRE_PHY)
2173 if (!(hw->flags & SKY2_HW_GIGABIT)) {
2174 if (aux & PHY_M_PS_SPEED_100)
2180 switch (aux & PHY_M_PS_SPEED_MSK) {
2181 case PHY_M_PS_SPEED_1000:
2183 case PHY_M_PS_SPEED_100:
2190 static void sky2_link_up(struct sky2_port *sky2)
2192 struct sky2_hw *hw = sky2->hw;
2193 unsigned port = sky2->port;
2194 static const char *fc_name[] = {
2203 sky2_enable_rx_tx(sky2);
2205 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
2207 netif_carrier_on(sky2->netdev);
2209 mod_timer(&hw->watchdog_timer, jiffies + 1);
2211 /* Turn on link LED */
2212 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
2213 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
2215 netif_info(sky2, link, sky2->netdev,
2216 "Link is up at %d Mbps, %s duplex, flow control %s\n",
2218 sky2->duplex == DUPLEX_FULL ? "full" : "half",
2219 fc_name[sky2->flow_status]);
2222 static void sky2_link_down(struct sky2_port *sky2)
2224 struct sky2_hw *hw = sky2->hw;
2225 unsigned port = sky2->port;
2228 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
2230 reg = gma_read16(hw, port, GM_GP_CTRL);
2231 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
2232 gma_write16(hw, port, GM_GP_CTRL, reg);
2234 netif_carrier_off(sky2->netdev);
2236 /* Turn off link LED */
2237 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
2239 netif_info(sky2, link, sky2->netdev, "Link is down\n");
2241 sky2_phy_init(hw, port);
2244 static enum flow_control sky2_flow(int rx, int tx)
2247 return tx ? FC_BOTH : FC_RX;
2249 return tx ? FC_TX : FC_NONE;
2252 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
2254 struct sky2_hw *hw = sky2->hw;
2255 unsigned port = sky2->port;
2258 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
2259 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
2260 if (lpa & PHY_M_AN_RF) {
2261 netdev_err(sky2->netdev, "remote fault\n");
2265 if (!(aux & PHY_M_PS_SPDUP_RES)) {
2266 netdev_err(sky2->netdev, "speed/duplex mismatch\n");
2270 sky2->speed = sky2_phy_speed(hw, aux);
2271 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2273 /* Since the pause result bits seem to in different positions on
2274 * different chips. look at registers.
2276 if (hw->flags & SKY2_HW_FIBRE_PHY) {
2277 /* Shift for bits in fiber PHY */
2278 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
2279 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
2281 if (advert & ADVERTISE_1000XPAUSE)
2282 advert |= ADVERTISE_PAUSE_CAP;
2283 if (advert & ADVERTISE_1000XPSE_ASYM)
2284 advert |= ADVERTISE_PAUSE_ASYM;
2285 if (lpa & LPA_1000XPAUSE)
2286 lpa |= LPA_PAUSE_CAP;
2287 if (lpa & LPA_1000XPAUSE_ASYM)
2288 lpa |= LPA_PAUSE_ASYM;
2291 sky2->flow_status = FC_NONE;
2292 if (advert & ADVERTISE_PAUSE_CAP) {
2293 if (lpa & LPA_PAUSE_CAP)
2294 sky2->flow_status = FC_BOTH;
2295 else if (advert & ADVERTISE_PAUSE_ASYM)
2296 sky2->flow_status = FC_RX;
2297 } else if (advert & ADVERTISE_PAUSE_ASYM) {
2298 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
2299 sky2->flow_status = FC_TX;
2302 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000 &&
2303 !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
2304 sky2->flow_status = FC_NONE;
2306 if (sky2->flow_status & FC_TX)
2307 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2309 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2314 /* Interrupt from PHY */
2315 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
2317 struct net_device *dev = hw->dev[port];
2318 struct sky2_port *sky2 = netdev_priv(dev);
2319 u16 istatus, phystat;
2321 if (!netif_running(dev))
2324 spin_lock(&sky2->phy_lock);
2325 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2326 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2328 netif_info(sky2, intr, sky2->netdev, "phy interrupt status 0x%x 0x%x\n",
2331 if (istatus & PHY_M_IS_AN_COMPL) {
2332 if (sky2_autoneg_done(sky2, phystat) == 0 &&
2333 !netif_carrier_ok(dev))
2338 if (istatus & PHY_M_IS_LSP_CHANGE)
2339 sky2->speed = sky2_phy_speed(hw, phystat);
2341 if (istatus & PHY_M_IS_DUP_CHANGE)
2343 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2345 if (istatus & PHY_M_IS_LST_CHANGE) {
2346 if (phystat & PHY_M_PS_LINK_UP)
2349 sky2_link_down(sky2);
2352 spin_unlock(&sky2->phy_lock);
2355 /* Special quick link interrupt (Yukon-2 Optima only) */
2356 static void sky2_qlink_intr(struct sky2_hw *hw)
2358 struct sky2_port *sky2 = netdev_priv(hw->dev[0]);
2363 imask = sky2_read32(hw, B0_IMSK);
2364 imask &= ~Y2_IS_PHY_QLNK;
2365 sky2_write32(hw, B0_IMSK, imask);
2367 /* reset PHY Link Detect */
2368 phy = sky2_pci_read16(hw, PSM_CONFIG_REG4);
2369 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2370 sky2_pci_write16(hw, PSM_CONFIG_REG4, phy | 1);
2371 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2376 /* Transmit timeout is only called if we are running, carrier is up
2377 * and tx queue is full (stopped).
2379 static void sky2_tx_timeout(struct net_device *dev)
2381 struct sky2_port *sky2 = netdev_priv(dev);
2382 struct sky2_hw *hw = sky2->hw;
2384 netif_err(sky2, timer, dev, "tx timeout\n");
2386 netdev_printk(KERN_DEBUG, dev, "transmit ring %u .. %u report=%u done=%u\n",
2387 sky2->tx_cons, sky2->tx_prod,
2388 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
2389 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
2391 /* can't restart safely under softirq */
2392 schedule_work(&hw->restart_work);
2395 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
2397 struct sky2_port *sky2 = netdev_priv(dev);
2398 struct sky2_hw *hw = sky2->hw;
2399 unsigned port = sky2->port;
2404 /* MTU size outside the spec */
2405 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2408 /* MTU > 1500 on yukon FE and FE+ not allowed */
2409 if (new_mtu > ETH_DATA_LEN &&
2410 (hw->chip_id == CHIP_ID_YUKON_FE ||
2411 hw->chip_id == CHIP_ID_YUKON_FE_P))
2414 if (!netif_running(dev)) {
2416 netdev_update_features(dev);
2420 imask = sky2_read32(hw, B0_IMSK);
2421 sky2_write32(hw, B0_IMSK, 0);
2422 sky2_read32(hw, B0_IMSK);
2424 dev->trans_start = jiffies; /* prevent tx timeout */
2425 napi_disable(&hw->napi);
2426 netif_tx_disable(dev);
2428 synchronize_irq(hw->pdev->irq);
2430 if (!(hw->flags & SKY2_HW_RAM_BUFFER))
2431 sky2_set_tx_stfwd(hw, port);
2433 ctl = gma_read16(hw, port, GM_GP_CTRL);
2434 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2436 sky2_rx_clean(sky2);
2439 netdev_update_features(dev);
2441 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) | GM_SMOD_VLAN_ENA;
2442 if (sky2->speed > SPEED_100)
2443 mode |= IPG_DATA_VAL(IPG_DATA_DEF_1000);
2445 mode |= IPG_DATA_VAL(IPG_DATA_DEF_10_100);
2447 if (dev->mtu > ETH_DATA_LEN)
2448 mode |= GM_SMOD_JUMBO_ENA;
2450 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2452 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2454 err = sky2_alloc_rx_skbs(sky2);
2456 sky2_rx_start(sky2);
2458 sky2_rx_clean(sky2);
2459 sky2_write32(hw, B0_IMSK, imask);
2461 sky2_read32(hw, B0_Y2_SP_LISR);
2462 napi_enable(&hw->napi);
2467 gma_write16(hw, port, GM_GP_CTRL, ctl);
2469 netif_wake_queue(dev);
2475 static inline bool needs_copy(const struct rx_ring_info *re,
2478 #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
2479 /* Some architectures need the IP header to be aligned */
2480 if (!IS_ALIGNED(re->data_addr + ETH_HLEN, sizeof(u32)))
2483 return length < copybreak;
2486 /* For small just reuse existing skb for next receive */
2487 static struct sk_buff *receive_copy(struct sky2_port *sky2,
2488 const struct rx_ring_info *re,
2491 struct sk_buff *skb;
2493 skb = netdev_alloc_skb_ip_align(sky2->netdev, length);
2495 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2496 length, PCI_DMA_FROMDEVICE);
2497 skb_copy_from_linear_data(re->skb, skb->data, length);
2498 skb->ip_summed = re->skb->ip_summed;
2499 skb->csum = re->skb->csum;
2500 skb_copy_hash(skb, re->skb);
2501 skb->vlan_proto = re->skb->vlan_proto;
2502 skb->vlan_tci = re->skb->vlan_tci;
2504 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2505 length, PCI_DMA_FROMDEVICE);
2506 re->skb->vlan_proto = 0;
2507 re->skb->vlan_tci = 0;
2508 skb_clear_hash(re->skb);
2509 re->skb->ip_summed = CHECKSUM_NONE;
2510 skb_put(skb, length);
2515 /* Adjust length of skb with fragments to match received data */
2516 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2517 unsigned int length)
2522 /* put header into skb */
2523 size = min(length, hdr_space);
2528 num_frags = skb_shinfo(skb)->nr_frags;
2529 for (i = 0; i < num_frags; i++) {
2530 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2533 /* don't need this page */
2534 __skb_frag_unref(frag);
2535 --skb_shinfo(skb)->nr_frags;
2537 size = min(length, (unsigned) PAGE_SIZE);
2539 skb_frag_size_set(frag, size);
2540 skb->data_len += size;
2541 skb->truesize += PAGE_SIZE;
2548 /* Normal packet - take skb from ring element and put in a new one */
2549 static struct sk_buff *receive_new(struct sky2_port *sky2,
2550 struct rx_ring_info *re,
2551 unsigned int length)
2553 struct sk_buff *skb;
2554 struct rx_ring_info nre;
2555 unsigned hdr_space = sky2->rx_data_size;
2557 nre.skb = sky2_rx_alloc(sky2, GFP_ATOMIC);
2558 if (unlikely(!nre.skb))
2561 if (sky2_rx_map_skb(sky2->hw->pdev, &nre, hdr_space))
2565 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2566 prefetch(skb->data);
2569 if (skb_shinfo(skb)->nr_frags)
2570 skb_put_frags(skb, hdr_space, length);
2572 skb_put(skb, length);
2576 dev_kfree_skb(nre.skb);
2582 * Receive one packet.
2583 * For larger packets, get new buffer.
2585 static struct sk_buff *sky2_receive(struct net_device *dev,
2586 u16 length, u32 status)
2588 struct sky2_port *sky2 = netdev_priv(dev);
2589 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2590 struct sk_buff *skb = NULL;
2591 u16 count = (status & GMR_FS_LEN) >> 16;
2593 netif_printk(sky2, rx_status, KERN_DEBUG, dev,
2594 "rx slot %u status 0x%x len %d\n",
2595 sky2->rx_next, status, length);
2597 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2598 prefetch(sky2->rx_ring + sky2->rx_next);
2600 if (vlan_tx_tag_present(re->skb))
2601 count -= VLAN_HLEN; /* Account for vlan tag */
2603 /* This chip has hardware problems that generates bogus status.
2604 * So do only marginal checking and expect higher level protocols
2605 * to handle crap frames.
2607 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2608 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2612 if (status & GMR_FS_ANY_ERR)
2615 if (!(status & GMR_FS_RX_OK))
2618 /* if length reported by DMA does not match PHY, packet was truncated */
2619 if (length != count)
2623 if (needs_copy(re, length))
2624 skb = receive_copy(sky2, re, length);
2626 skb = receive_new(sky2, re, length);
2628 dev->stats.rx_dropped += (skb == NULL);
2631 sky2_rx_submit(sky2, re);
2636 ++dev->stats.rx_errors;
2638 if (net_ratelimit())
2639 netif_info(sky2, rx_err, dev,
2640 "rx error, status 0x%x length %d\n", status, length);
2645 /* Transmit complete */
2646 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2648 struct sky2_port *sky2 = netdev_priv(dev);
2650 if (netif_running(dev)) {
2651 sky2_tx_complete(sky2, last);
2653 /* Wake unless it's detached, and called e.g. from sky2_close() */
2654 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
2655 netif_wake_queue(dev);
2659 static inline void sky2_skb_rx(const struct sky2_port *sky2,
2660 struct sk_buff *skb)
2662 if (skb->ip_summed == CHECKSUM_NONE)
2663 netif_receive_skb(skb);
2665 napi_gro_receive(&sky2->hw->napi, skb);
2668 static inline void sky2_rx_done(struct sky2_hw *hw, unsigned port,
2669 unsigned packets, unsigned bytes)
2671 struct net_device *dev = hw->dev[port];
2672 struct sky2_port *sky2 = netdev_priv(dev);
2677 u64_stats_update_begin(&sky2->rx_stats.syncp);
2678 sky2->rx_stats.packets += packets;
2679 sky2->rx_stats.bytes += bytes;
2680 u64_stats_update_end(&sky2->rx_stats.syncp);
2682 dev->last_rx = jiffies;
2683 sky2_rx_update(netdev_priv(dev), rxqaddr[port]);
2686 static void sky2_rx_checksum(struct sky2_port *sky2, u32 status)
2688 /* If this happens then driver assuming wrong format for chip type */
2689 BUG_ON(sky2->hw->flags & SKY2_HW_NEW_LE);
2691 /* Both checksum counters are programmed to start at
2692 * the same offset, so unless there is a problem they
2693 * should match. This failure is an early indication that
2694 * hardware receive checksumming won't work.
2696 if (likely((u16)(status >> 16) == (u16)status)) {
2697 struct sk_buff *skb = sky2->rx_ring[sky2->rx_next].skb;
2698 skb->ip_summed = CHECKSUM_COMPLETE;
2699 skb->csum = le16_to_cpu(status);
2701 dev_notice(&sky2->hw->pdev->dev,
2702 "%s: receive checksum problem (status = %#x)\n",
2703 sky2->netdev->name, status);
2705 /* Disable checksum offload
2706 * It will be reenabled on next ndo_set_features, but if it's
2707 * really broken, will get disabled again
2709 sky2->netdev->features &= ~NETIF_F_RXCSUM;
2710 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2715 static void sky2_rx_tag(struct sky2_port *sky2, u16 length)
2717 struct sk_buff *skb;
2719 skb = sky2->rx_ring[sky2->rx_next].skb;
2720 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), be16_to_cpu(length));
2723 static void sky2_rx_hash(struct sky2_port *sky2, u32 status)
2725 struct sk_buff *skb;
2727 skb = sky2->rx_ring[sky2->rx_next].skb;
2728 skb_set_hash(skb, le32_to_cpu(status), PKT_HASH_TYPE_L3);
2731 /* Process status response ring */
2732 static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
2735 unsigned int total_bytes[2] = { 0 };
2736 unsigned int total_packets[2] = { 0 };
2743 struct sky2_port *sky2;
2744 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2746 struct net_device *dev;
2747 struct sk_buff *skb;
2750 u8 opcode = le->opcode;
2752 if (!(opcode & HW_OWNER))
2755 hw->st_idx = RING_NEXT(hw->st_idx, hw->st_size);
2757 port = le->css & CSS_LINK_BIT;
2758 dev = hw->dev[port];
2759 sky2 = netdev_priv(dev);
2760 length = le16_to_cpu(le->length);
2761 status = le32_to_cpu(le->status);
2764 switch (opcode & ~HW_OWNER) {
2766 total_packets[port]++;
2767 total_bytes[port] += length;
2769 skb = sky2_receive(dev, length, status);
2773 /* This chip reports checksum status differently */
2774 if (hw->flags & SKY2_HW_NEW_LE) {
2775 if ((dev->features & NETIF_F_RXCSUM) &&
2776 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2777 (le->css & CSS_TCPUDPCSOK))
2778 skb->ip_summed = CHECKSUM_UNNECESSARY;
2780 skb->ip_summed = CHECKSUM_NONE;
2783 skb->protocol = eth_type_trans(skb, dev);
2784 sky2_skb_rx(sky2, skb);
2786 /* Stop after net poll weight */
2787 if (++work_done >= to_do)
2792 sky2_rx_tag(sky2, length);
2796 sky2_rx_tag(sky2, length);
2799 if (likely(dev->features & NETIF_F_RXCSUM))
2800 sky2_rx_checksum(sky2, status);
2804 sky2_rx_hash(sky2, status);
2808 /* TX index reports status for both ports */
2809 sky2_tx_done(hw->dev[0], status & 0xfff);
2811 sky2_tx_done(hw->dev[1],
2812 ((status >> 24) & 0xff)
2813 | (u16)(length & 0xf) << 8);
2817 if (net_ratelimit())
2818 pr_warn("unknown status opcode 0x%x\n", opcode);
2820 } while (hw->st_idx != idx);
2822 /* Fully processed status ring so clear irq */
2823 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2826 sky2_rx_done(hw, 0, total_packets[0], total_bytes[0]);
2827 sky2_rx_done(hw, 1, total_packets[1], total_bytes[1]);
2832 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2834 struct net_device *dev = hw->dev[port];
2836 if (net_ratelimit())
2837 netdev_info(dev, "hw error interrupt status 0x%x\n", status);
2839 if (status & Y2_IS_PAR_RD1) {
2840 if (net_ratelimit())
2841 netdev_err(dev, "ram data read parity error\n");
2843 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2846 if (status & Y2_IS_PAR_WR1) {
2847 if (net_ratelimit())
2848 netdev_err(dev, "ram data write parity error\n");
2850 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2853 if (status & Y2_IS_PAR_MAC1) {
2854 if (net_ratelimit())
2855 netdev_err(dev, "MAC parity error\n");
2856 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2859 if (status & Y2_IS_PAR_RX1) {
2860 if (net_ratelimit())
2861 netdev_err(dev, "RX parity error\n");
2862 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2865 if (status & Y2_IS_TCP_TXA1) {
2866 if (net_ratelimit())
2867 netdev_err(dev, "TCP segmentation error\n");
2868 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2872 static void sky2_hw_intr(struct sky2_hw *hw)
2874 struct pci_dev *pdev = hw->pdev;
2875 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2876 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2880 if (status & Y2_IS_TIST_OV)
2881 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2883 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2886 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2887 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2888 if (net_ratelimit())
2889 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
2892 sky2_pci_write16(hw, PCI_STATUS,
2893 pci_err | PCI_STATUS_ERROR_BITS);
2894 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2897 if (status & Y2_IS_PCI_EXP) {
2898 /* PCI-Express uncorrectable Error occurred */
2901 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2902 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2903 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2905 if (net_ratelimit())
2906 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
2908 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2909 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2912 if (status & Y2_HWE_L1_MASK)
2913 sky2_hw_error(hw, 0, status);
2915 if (status & Y2_HWE_L1_MASK)
2916 sky2_hw_error(hw, 1, status);
2919 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2921 struct net_device *dev = hw->dev[port];
2922 struct sky2_port *sky2 = netdev_priv(dev);
2923 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2925 netif_info(sky2, intr, dev, "mac interrupt status 0x%x\n", status);
2927 if (status & GM_IS_RX_CO_OV)
2928 gma_read16(hw, port, GM_RX_IRQ_SRC);
2930 if (status & GM_IS_TX_CO_OV)
2931 gma_read16(hw, port, GM_TX_IRQ_SRC);
2933 if (status & GM_IS_RX_FF_OR) {
2934 ++dev->stats.rx_fifo_errors;
2935 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2938 if (status & GM_IS_TX_FF_UR) {
2939 ++dev->stats.tx_fifo_errors;
2940 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2944 /* This should never happen it is a bug. */
2945 static void sky2_le_error(struct sky2_hw *hw, unsigned port, u16 q)
2947 struct net_device *dev = hw->dev[port];
2948 u16 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2950 dev_err(&hw->pdev->dev, "%s: descriptor error q=%#x get=%u put=%u\n",
2951 dev->name, (unsigned) q, (unsigned) idx,
2952 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2954 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2957 static int sky2_rx_hung(struct net_device *dev)
2959 struct sky2_port *sky2 = netdev_priv(dev);
2960 struct sky2_hw *hw = sky2->hw;
2961 unsigned port = sky2->port;
2962 unsigned rxq = rxqaddr[port];
2963 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2964 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2965 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2966 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2968 /* If idle and MAC or PCI is stuck */
2969 if (sky2->check.last == dev->last_rx &&
2970 ((mac_rp == sky2->check.mac_rp &&
2971 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2972 /* Check if the PCI RX hang */
2973 (fifo_rp == sky2->check.fifo_rp &&
2974 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2975 netdev_printk(KERN_DEBUG, dev,
2976 "hung mac %d:%d fifo %d (%d:%d)\n",
2977 mac_lev, mac_rp, fifo_lev,
2978 fifo_rp, sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2981 sky2->check.last = dev->last_rx;
2982 sky2->check.mac_rp = mac_rp;
2983 sky2->check.mac_lev = mac_lev;
2984 sky2->check.fifo_rp = fifo_rp;
2985 sky2->check.fifo_lev = fifo_lev;
2990 static void sky2_watchdog(unsigned long arg)
2992 struct sky2_hw *hw = (struct sky2_hw *) arg;
2994 /* Check for lost IRQ once a second */
2995 if (sky2_read32(hw, B0_ISRC)) {
2996 napi_schedule(&hw->napi);
3000 for (i = 0; i < hw->ports; i++) {
3001 struct net_device *dev = hw->dev[i];
3002 if (!netif_running(dev))
3006 /* For chips with Rx FIFO, check if stuck */
3007 if ((hw->flags & SKY2_HW_RAM_BUFFER) &&
3008 sky2_rx_hung(dev)) {
3009 netdev_info(dev, "receiver hang detected\n");
3010 schedule_work(&hw->restart_work);
3019 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
3022 /* Hardware/software error handling */
3023 static void sky2_err_intr(struct sky2_hw *hw, u32 status)
3025 if (net_ratelimit())
3026 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
3028 if (status & Y2_IS_HW_ERR)
3031 if (status & Y2_IS_IRQ_MAC1)
3032 sky2_mac_intr(hw, 0);
3034 if (status & Y2_IS_IRQ_MAC2)
3035 sky2_mac_intr(hw, 1);
3037 if (status & Y2_IS_CHK_RX1)
3038 sky2_le_error(hw, 0, Q_R1);
3040 if (status & Y2_IS_CHK_RX2)
3041 sky2_le_error(hw, 1, Q_R2);
3043 if (status & Y2_IS_CHK_TXA1)
3044 sky2_le_error(hw, 0, Q_XA1);
3046 if (status & Y2_IS_CHK_TXA2)
3047 sky2_le_error(hw, 1, Q_XA2);
3050 static int sky2_poll(struct napi_struct *napi, int work_limit)
3052 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
3053 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
3057 if (unlikely(status & Y2_IS_ERROR))
3058 sky2_err_intr(hw, status);
3060 if (status & Y2_IS_IRQ_PHY1)
3061 sky2_phy_intr(hw, 0);
3063 if (status & Y2_IS_IRQ_PHY2)
3064 sky2_phy_intr(hw, 1);
3066 if (status & Y2_IS_PHY_QLNK)
3067 sky2_qlink_intr(hw);
3069 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
3070 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
3072 if (work_done >= work_limit)
3076 napi_complete(napi);
3077 sky2_read32(hw, B0_Y2_SP_LISR);
3083 static irqreturn_t sky2_intr(int irq, void *dev_id)
3085 struct sky2_hw *hw = dev_id;
3088 /* Reading this mask interrupts as side effect */
3089 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
3090 if (status == 0 || status == ~0) {
3091 sky2_write32(hw, B0_Y2_SP_ICR, 2);
3095 prefetch(&hw->st_le[hw->st_idx]);
3097 napi_schedule(&hw->napi);
3102 #ifdef CONFIG_NET_POLL_CONTROLLER
3103 static void sky2_netpoll(struct net_device *dev)
3105 struct sky2_port *sky2 = netdev_priv(dev);
3107 napi_schedule(&sky2->hw->napi);
3111 /* Chip internal frequency for clock calculations */
3112 static u32 sky2_mhz(const struct sky2_hw *hw)
3114 switch (hw->chip_id) {
3115 case CHIP_ID_YUKON_EC:
3116 case CHIP_ID_YUKON_EC_U:
3117 case CHIP_ID_YUKON_EX:
3118 case CHIP_ID_YUKON_SUPR:
3119 case CHIP_ID_YUKON_UL_2:
3120 case CHIP_ID_YUKON_OPT:
3121 case CHIP_ID_YUKON_PRM:
3122 case CHIP_ID_YUKON_OP_2:
3125 case CHIP_ID_YUKON_FE:
3128 case CHIP_ID_YUKON_FE_P:
3131 case CHIP_ID_YUKON_XL:
3139 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
3141 return sky2_mhz(hw) * us;
3144 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
3146 return clk / sky2_mhz(hw);
3150 static int sky2_init(struct sky2_hw *hw)
3154 /* Enable all clocks and check for bad PCI access */
3155 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
3157 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3159 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
3160 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
3162 switch (hw->chip_id) {
3163 case CHIP_ID_YUKON_XL:
3164 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
3165 if (hw->chip_rev < CHIP_REV_YU_XL_A2)
3166 hw->flags |= SKY2_HW_RSS_BROKEN;
3169 case CHIP_ID_YUKON_EC_U:
3170 hw->flags = SKY2_HW_GIGABIT
3172 | SKY2_HW_ADV_POWER_CTL;
3175 case CHIP_ID_YUKON_EX:
3176 hw->flags = SKY2_HW_GIGABIT
3179 | SKY2_HW_ADV_POWER_CTL
3180 | SKY2_HW_RSS_CHKSUM;
3182 /* New transmit checksum */
3183 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
3184 hw->flags |= SKY2_HW_AUTO_TX_SUM;
3187 case CHIP_ID_YUKON_EC:
3188 /* This rev is really old, and requires untested workarounds */
3189 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
3190 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
3193 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_RSS_BROKEN;
3196 case CHIP_ID_YUKON_FE:
3197 hw->flags = SKY2_HW_RSS_BROKEN;
3200 case CHIP_ID_YUKON_FE_P:
3201 hw->flags = SKY2_HW_NEWER_PHY
3203 | SKY2_HW_AUTO_TX_SUM
3204 | SKY2_HW_ADV_POWER_CTL;
3206 /* The workaround for status conflicts VLAN tag detection. */
3207 if (hw->chip_rev == CHIP_REV_YU_FE2_A0)
3208 hw->flags |= SKY2_HW_VLAN_BROKEN | SKY2_HW_RSS_CHKSUM;
3211 case CHIP_ID_YUKON_SUPR:
3212 hw->flags = SKY2_HW_GIGABIT
3215 | SKY2_HW_AUTO_TX_SUM
3216 | SKY2_HW_ADV_POWER_CTL;
3218 if (hw->chip_rev == CHIP_REV_YU_SU_A0)
3219 hw->flags |= SKY2_HW_RSS_CHKSUM;
3222 case CHIP_ID_YUKON_UL_2:
3223 hw->flags = SKY2_HW_GIGABIT
3224 | SKY2_HW_ADV_POWER_CTL;
3227 case CHIP_ID_YUKON_OPT:
3228 case CHIP_ID_YUKON_PRM:
3229 case CHIP_ID_YUKON_OP_2:
3230 hw->flags = SKY2_HW_GIGABIT
3232 | SKY2_HW_ADV_POWER_CTL;
3236 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
3241 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
3242 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
3243 hw->flags |= SKY2_HW_FIBRE_PHY;
3246 t8 = sky2_read8(hw, B2_Y2_HW_RES);
3247 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
3248 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
3252 if (sky2_read8(hw, B2_E_0))
3253 hw->flags |= SKY2_HW_RAM_BUFFER;
3258 static void sky2_reset(struct sky2_hw *hw)
3260 struct pci_dev *pdev = hw->pdev;
3263 u32 hwe_mask = Y2_HWE_ALL_MASK;
3266 if (hw->chip_id == CHIP_ID_YUKON_EX
3267 || hw->chip_id == CHIP_ID_YUKON_SUPR) {
3268 sky2_write32(hw, CPU_WDOG, 0);
3269 status = sky2_read16(hw, HCU_CCSR);
3270 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
3271 HCU_CCSR_UC_STATE_MSK);
3273 * CPU clock divider shouldn't be used because
3274 * - ASF firmware may malfunction
3275 * - Yukon-Supreme: Parallel FLASH doesn't support divided clocks
3277 status &= ~HCU_CCSR_CPU_CLK_DIVIDE_MSK;
3278 sky2_write16(hw, HCU_CCSR, status);
3279 sky2_write32(hw, CPU_WDOG, 0);
3281 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
3282 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
3285 sky2_write8(hw, B0_CTST, CS_RST_SET);
3286 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3288 /* allow writes to PCI config */
3289 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3291 /* clear PCI errors, if any */
3292 status = sky2_pci_read16(hw, PCI_STATUS);
3293 status |= PCI_STATUS_ERROR_BITS;
3294 sky2_pci_write16(hw, PCI_STATUS, status);
3296 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
3298 if (pci_is_pcie(pdev)) {
3299 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
3302 /* If error bit is stuck on ignore it */
3303 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
3304 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
3306 hwe_mask |= Y2_IS_PCI_EXP;
3310 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3312 for (i = 0; i < hw->ports; i++) {
3313 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
3314 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
3316 if (hw->chip_id == CHIP_ID_YUKON_EX ||
3317 hw->chip_id == CHIP_ID_YUKON_SUPR)
3318 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
3319 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
3324 if (hw->chip_id == CHIP_ID_YUKON_SUPR && hw->chip_rev > CHIP_REV_YU_SU_B0) {
3325 /* enable MACSec clock gating */
3326 sky2_pci_write32(hw, PCI_DEV_REG3, P_CLK_MACSEC_DIS);
3329 if (hw->chip_id == CHIP_ID_YUKON_OPT ||
3330 hw->chip_id == CHIP_ID_YUKON_PRM ||
3331 hw->chip_id == CHIP_ID_YUKON_OP_2) {
3334 if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
3335 /* disable PCI-E PHY power down (set PHY reg 0x80, bit 7 */
3336 sky2_write32(hw, Y2_PEX_PHY_DATA, (0x80UL << 16) | (1 << 7));
3338 /* set PHY Link Detect Timer to 1.1 second (11x 100ms) */
3341 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3342 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3344 /* set PHY Link Detect Timer to 0.4 second (4x 100ms) */
3348 reg <<= PSM_CONFIG_REG4_TIMER_PHY_LINK_DETECT_BASE;
3349 reg |= PSM_CONFIG_REG4_RST_PHY_LINK_DETECT;
3351 /* reset PHY Link Detect */
3352 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3353 sky2_pci_write16(hw, PSM_CONFIG_REG4, reg);
3355 /* check if PSMv2 was running before */
3356 reg = sky2_pci_read16(hw, PSM_CONFIG_REG3);
3357 if (reg & PCI_EXP_LNKCTL_ASPMC)
3358 /* restore the PCIe Link Control register */
3359 sky2_pci_write16(hw, pdev->pcie_cap + PCI_EXP_LNKCTL,
3362 if (hw->chip_id == CHIP_ID_YUKON_PRM &&
3363 hw->chip_rev == CHIP_REV_YU_PRM_A0) {
3364 /* change PHY Interrupt polarity to low active */
3365 reg = sky2_read16(hw, GPHY_CTRL);
3366 sky2_write16(hw, GPHY_CTRL, reg | GPC_INTPOL);
3368 /* adapt HW for low active PHY Interrupt */
3369 reg = sky2_read16(hw, Y2_CFG_SPC + PCI_LDO_CTRL);
3370 sky2_write16(hw, Y2_CFG_SPC + PCI_LDO_CTRL, reg | PHY_M_UNDOC1);
3373 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3375 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3376 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3379 /* Clear I2C IRQ noise */
3380 sky2_write32(hw, B2_I2C_IRQ, 1);
3382 /* turn off hardware timer (unused) */
3383 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
3384 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
3386 /* Turn off descriptor polling */
3387 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
3389 /* Turn off receive timestamp */
3390 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
3391 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
3393 /* enable the Tx Arbiters */
3394 for (i = 0; i < hw->ports; i++)
3395 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3397 /* Initialize ram interface */
3398 for (i = 0; i < hw->ports; i++) {
3399 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
3401 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
3402 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
3403 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
3404 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
3405 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
3406 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
3407 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
3408 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
3409 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
3410 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
3411 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
3412 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
3415 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
3417 for (i = 0; i < hw->ports; i++)
3418 sky2_gmac_reset(hw, i);
3420 memset(hw->st_le, 0, hw->st_size * sizeof(struct sky2_status_le));
3423 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
3424 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
3426 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
3427 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
3429 /* Set the list last index */
3430 sky2_write16(hw, STAT_LAST_IDX, hw->st_size - 1);
3432 sky2_write16(hw, STAT_TX_IDX_TH, 10);
3433 sky2_write8(hw, STAT_FIFO_WM, 16);
3435 /* set Status-FIFO ISR watermark */
3436 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
3437 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
3439 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
3441 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
3442 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
3443 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
3445 /* enable status unit */
3446 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
3448 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3449 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3450 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3453 /* Take device down (offline).
3454 * Equivalent to doing dev_stop() but this does not
3455 * inform upper layers of the transition.
3457 static void sky2_detach(struct net_device *dev)
3459 if (netif_running(dev)) {
3461 netif_device_detach(dev); /* stop txq */
3462 netif_tx_unlock(dev);
3467 /* Bring device back after doing sky2_detach */
3468 static int sky2_reattach(struct net_device *dev)
3472 if (netif_running(dev)) {
3473 err = sky2_open(dev);
3475 netdev_info(dev, "could not restart %d\n", err);
3478 netif_device_attach(dev);
3479 sky2_set_multicast(dev);
3486 static void sky2_all_down(struct sky2_hw *hw)
3490 if (hw->flags & SKY2_HW_IRQ_SETUP) {
3491 sky2_write32(hw, B0_IMSK, 0);
3492 sky2_read32(hw, B0_IMSK);
3494 synchronize_irq(hw->pdev->irq);
3495 napi_disable(&hw->napi);
3498 for (i = 0; i < hw->ports; i++) {
3499 struct net_device *dev = hw->dev[i];
3500 struct sky2_port *sky2 = netdev_priv(dev);
3502 if (!netif_running(dev))
3505 netif_carrier_off(dev);
3506 netif_tx_disable(dev);
3511 static void sky2_all_up(struct sky2_hw *hw)
3513 u32 imask = Y2_IS_BASE;
3516 for (i = 0; i < hw->ports; i++) {
3517 struct net_device *dev = hw->dev[i];
3518 struct sky2_port *sky2 = netdev_priv(dev);
3520 if (!netif_running(dev))
3524 sky2_set_multicast(dev);
3525 imask |= portirq_msk[i];
3526 netif_wake_queue(dev);
3529 if (hw->flags & SKY2_HW_IRQ_SETUP) {
3530 sky2_write32(hw, B0_IMSK, imask);
3531 sky2_read32(hw, B0_IMSK);
3532 sky2_read32(hw, B0_Y2_SP_LISR);
3533 napi_enable(&hw->napi);
3537 static void sky2_restart(struct work_struct *work)
3539 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
3550 static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
3552 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
3555 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3557 const struct sky2_port *sky2 = netdev_priv(dev);
3559 wol->supported = sky2_wol_supported(sky2->hw);
3560 wol->wolopts = sky2->wol;
3563 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3565 struct sky2_port *sky2 = netdev_priv(dev);
3566 struct sky2_hw *hw = sky2->hw;
3567 bool enable_wakeup = false;
3570 if ((wol->wolopts & ~sky2_wol_supported(sky2->hw)) ||
3571 !device_can_wakeup(&hw->pdev->dev))
3574 sky2->wol = wol->wolopts;
3576 for (i = 0; i < hw->ports; i++) {
3577 struct net_device *dev = hw->dev[i];
3578 struct sky2_port *sky2 = netdev_priv(dev);
3581 enable_wakeup = true;
3583 device_set_wakeup_enable(&hw->pdev->dev, enable_wakeup);
3588 static u32 sky2_supported_modes(const struct sky2_hw *hw)
3590 if (sky2_is_copper(hw)) {
3591 u32 modes = SUPPORTED_10baseT_Half
3592 | SUPPORTED_10baseT_Full
3593 | SUPPORTED_100baseT_Half
3594 | SUPPORTED_100baseT_Full;
3596 if (hw->flags & SKY2_HW_GIGABIT)
3597 modes |= SUPPORTED_1000baseT_Half
3598 | SUPPORTED_1000baseT_Full;
3601 return SUPPORTED_1000baseT_Half
3602 | SUPPORTED_1000baseT_Full;
3605 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3607 struct sky2_port *sky2 = netdev_priv(dev);
3608 struct sky2_hw *hw = sky2->hw;
3610 ecmd->transceiver = XCVR_INTERNAL;
3611 ecmd->supported = sky2_supported_modes(hw);
3612 ecmd->phy_address = PHY_ADDR_MARV;
3613 if (sky2_is_copper(hw)) {
3614 ecmd->port = PORT_TP;
3615 ethtool_cmd_speed_set(ecmd, sky2->speed);
3616 ecmd->supported |= SUPPORTED_Autoneg | SUPPORTED_TP;
3618 ethtool_cmd_speed_set(ecmd, SPEED_1000);
3619 ecmd->port = PORT_FIBRE;
3620 ecmd->supported |= SUPPORTED_Autoneg | SUPPORTED_FIBRE;
3623 ecmd->advertising = sky2->advertising;
3624 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_SPEED)
3625 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3626 ecmd->duplex = sky2->duplex;
3630 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3632 struct sky2_port *sky2 = netdev_priv(dev);
3633 const struct sky2_hw *hw = sky2->hw;
3634 u32 supported = sky2_supported_modes(hw);
3636 if (ecmd->autoneg == AUTONEG_ENABLE) {
3637 if (ecmd->advertising & ~supported)
3640 if (sky2_is_copper(hw))
3641 sky2->advertising = ecmd->advertising |
3645 sky2->advertising = ecmd->advertising |
3649 sky2->flags |= SKY2_FLAG_AUTO_SPEED;
3654 u32 speed = ethtool_cmd_speed(ecmd);
3658 if (ecmd->duplex == DUPLEX_FULL)
3659 setting = SUPPORTED_1000baseT_Full;
3660 else if (ecmd->duplex == DUPLEX_HALF)
3661 setting = SUPPORTED_1000baseT_Half;
3666 if (ecmd->duplex == DUPLEX_FULL)
3667 setting = SUPPORTED_100baseT_Full;
3668 else if (ecmd->duplex == DUPLEX_HALF)
3669 setting = SUPPORTED_100baseT_Half;
3675 if (ecmd->duplex == DUPLEX_FULL)
3676 setting = SUPPORTED_10baseT_Full;
3677 else if (ecmd->duplex == DUPLEX_HALF)
3678 setting = SUPPORTED_10baseT_Half;
3686 if ((setting & supported) == 0)
3689 sky2->speed = speed;
3690 sky2->duplex = ecmd->duplex;
3691 sky2->flags &= ~SKY2_FLAG_AUTO_SPEED;
3694 if (netif_running(dev)) {
3695 sky2_phy_reinit(sky2);
3696 sky2_set_multicast(dev);
3702 static void sky2_get_drvinfo(struct net_device *dev,
3703 struct ethtool_drvinfo *info)
3705 struct sky2_port *sky2 = netdev_priv(dev);
3707 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
3708 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
3709 strlcpy(info->bus_info, pci_name(sky2->hw->pdev),
3710 sizeof(info->bus_info));
3713 static const struct sky2_stat {
3714 char name[ETH_GSTRING_LEN];
3717 { "tx_bytes", GM_TXO_OK_HI },
3718 { "rx_bytes", GM_RXO_OK_HI },
3719 { "tx_broadcast", GM_TXF_BC_OK },
3720 { "rx_broadcast", GM_RXF_BC_OK },
3721 { "tx_multicast", GM_TXF_MC_OK },
3722 { "rx_multicast", GM_RXF_MC_OK },
3723 { "tx_unicast", GM_TXF_UC_OK },
3724 { "rx_unicast", GM_RXF_UC_OK },
3725 { "tx_mac_pause", GM_TXF_MPAUSE },
3726 { "rx_mac_pause", GM_RXF_MPAUSE },
3727 { "collisions", GM_TXF_COL },
3728 { "late_collision",GM_TXF_LAT_COL },
3729 { "aborted", GM_TXF_ABO_COL },
3730 { "single_collisions", GM_TXF_SNG_COL },
3731 { "multi_collisions", GM_TXF_MUL_COL },
3733 { "rx_short", GM_RXF_SHT },
3734 { "rx_runt", GM_RXE_FRAG },
3735 { "rx_64_byte_packets", GM_RXF_64B },
3736 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3737 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3738 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3739 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3740 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3741 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3742 { "rx_too_long", GM_RXF_LNG_ERR },
3743 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3744 { "rx_jabber", GM_RXF_JAB_PKT },
3745 { "rx_fcs_error", GM_RXF_FCS_ERR },
3747 { "tx_64_byte_packets", GM_TXF_64B },
3748 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3749 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3750 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3751 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3752 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3753 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3754 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3757 static u32 sky2_get_msglevel(struct net_device *netdev)
3759 struct sky2_port *sky2 = netdev_priv(netdev);
3760 return sky2->msg_enable;
3763 static int sky2_nway_reset(struct net_device *dev)
3765 struct sky2_port *sky2 = netdev_priv(dev);
3767 if (!netif_running(dev) || !(sky2->flags & SKY2_FLAG_AUTO_SPEED))
3770 sky2_phy_reinit(sky2);
3771 sky2_set_multicast(dev);
3776 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3778 struct sky2_hw *hw = sky2->hw;
3779 unsigned port = sky2->port;
3782 data[0] = get_stats64(hw, port, GM_TXO_OK_LO);
3783 data[1] = get_stats64(hw, port, GM_RXO_OK_LO);
3785 for (i = 2; i < count; i++)
3786 data[i] = get_stats32(hw, port, sky2_stats[i].offset);
3789 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3791 struct sky2_port *sky2 = netdev_priv(netdev);
3792 sky2->msg_enable = value;
3795 static int sky2_get_sset_count(struct net_device *dev, int sset)
3799 return ARRAY_SIZE(sky2_stats);
3805 static void sky2_get_ethtool_stats(struct net_device *dev,
3806 struct ethtool_stats *stats, u64 * data)
3808 struct sky2_port *sky2 = netdev_priv(dev);
3810 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3813 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3817 switch (stringset) {
3819 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3820 memcpy(data + i * ETH_GSTRING_LEN,
3821 sky2_stats[i].name, ETH_GSTRING_LEN);
3826 static int sky2_set_mac_address(struct net_device *dev, void *p)
3828 struct sky2_port *sky2 = netdev_priv(dev);
3829 struct sky2_hw *hw = sky2->hw;
3830 unsigned port = sky2->port;
3831 const struct sockaddr *addr = p;
3833 if (!is_valid_ether_addr(addr->sa_data))
3834 return -EADDRNOTAVAIL;
3836 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3837 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3838 dev->dev_addr, ETH_ALEN);
3839 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3840 dev->dev_addr, ETH_ALEN);
3842 /* virtual address for data */
3843 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3845 /* physical address: used for pause frames */
3846 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3851 static inline void sky2_add_filter(u8 filter[8], const u8 *addr)
3855 bit = ether_crc(ETH_ALEN, addr) & 63;
3856 filter[bit >> 3] |= 1 << (bit & 7);
3859 static void sky2_set_multicast(struct net_device *dev)
3861 struct sky2_port *sky2 = netdev_priv(dev);
3862 struct sky2_hw *hw = sky2->hw;
3863 unsigned port = sky2->port;
3864 struct netdev_hw_addr *ha;
3868 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3870 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3871 memset(filter, 0, sizeof(filter));
3873 reg = gma_read16(hw, port, GM_RX_CTRL);
3874 reg |= GM_RXCR_UCF_ENA;
3876 if (dev->flags & IFF_PROMISC) /* promiscuous */
3877 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3878 else if (dev->flags & IFF_ALLMULTI)
3879 memset(filter, 0xff, sizeof(filter));
3880 else if (netdev_mc_empty(dev) && !rx_pause)
3881 reg &= ~GM_RXCR_MCF_ENA;
3883 reg |= GM_RXCR_MCF_ENA;
3886 sky2_add_filter(filter, pause_mc_addr);
3888 netdev_for_each_mc_addr(ha, dev)
3889 sky2_add_filter(filter, ha->addr);
3892 gma_write16(hw, port, GM_MC_ADDR_H1,
3893 (u16) filter[0] | ((u16) filter[1] << 8));
3894 gma_write16(hw, port, GM_MC_ADDR_H2,
3895 (u16) filter[2] | ((u16) filter[3] << 8));
3896 gma_write16(hw, port, GM_MC_ADDR_H3,
3897 (u16) filter[4] | ((u16) filter[5] << 8));
3898 gma_write16(hw, port, GM_MC_ADDR_H4,
3899 (u16) filter[6] | ((u16) filter[7] << 8));
3901 gma_write16(hw, port, GM_RX_CTRL, reg);
3904 static struct rtnl_link_stats64 *sky2_get_stats(struct net_device *dev,
3905 struct rtnl_link_stats64 *stats)
3907 struct sky2_port *sky2 = netdev_priv(dev);
3908 struct sky2_hw *hw = sky2->hw;
3909 unsigned port = sky2->port;
3911 u64 _bytes, _packets;
3914 start = u64_stats_fetch_begin_irq(&sky2->rx_stats.syncp);
3915 _bytes = sky2->rx_stats.bytes;
3916 _packets = sky2->rx_stats.packets;
3917 } while (u64_stats_fetch_retry_irq(&sky2->rx_stats.syncp, start));
3919 stats->rx_packets = _packets;
3920 stats->rx_bytes = _bytes;
3923 start = u64_stats_fetch_begin_irq(&sky2->tx_stats.syncp);
3924 _bytes = sky2->tx_stats.bytes;
3925 _packets = sky2->tx_stats.packets;
3926 } while (u64_stats_fetch_retry_irq(&sky2->tx_stats.syncp, start));
3928 stats->tx_packets = _packets;
3929 stats->tx_bytes = _bytes;
3931 stats->multicast = get_stats32(hw, port, GM_RXF_MC_OK)
3932 + get_stats32(hw, port, GM_RXF_BC_OK);
3934 stats->collisions = get_stats32(hw, port, GM_TXF_COL);
3936 stats->rx_length_errors = get_stats32(hw, port, GM_RXF_LNG_ERR);
3937 stats->rx_crc_errors = get_stats32(hw, port, GM_RXF_FCS_ERR);
3938 stats->rx_frame_errors = get_stats32(hw, port, GM_RXF_SHT)
3939 + get_stats32(hw, port, GM_RXE_FRAG);
3940 stats->rx_over_errors = get_stats32(hw, port, GM_RXE_FIFO_OV);
3942 stats->rx_dropped = dev->stats.rx_dropped;
3943 stats->rx_fifo_errors = dev->stats.rx_fifo_errors;
3944 stats->tx_fifo_errors = dev->stats.tx_fifo_errors;
3949 /* Can have one global because blinking is controlled by
3950 * ethtool and that is always under RTNL mutex
3952 static void sky2_led(struct sky2_port *sky2, enum led_mode mode)
3954 struct sky2_hw *hw = sky2->hw;
3955 unsigned port = sky2->port;
3957 spin_lock_bh(&sky2->phy_lock);
3958 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3959 hw->chip_id == CHIP_ID_YUKON_EX ||
3960 hw->chip_id == CHIP_ID_YUKON_SUPR) {
3962 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3963 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3967 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3968 PHY_M_LEDC_LOS_CTRL(8) |
3969 PHY_M_LEDC_INIT_CTRL(8) |
3970 PHY_M_LEDC_STA1_CTRL(8) |
3971 PHY_M_LEDC_STA0_CTRL(8));
3974 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3975 PHY_M_LEDC_LOS_CTRL(9) |
3976 PHY_M_LEDC_INIT_CTRL(9) |
3977 PHY_M_LEDC_STA1_CTRL(9) |
3978 PHY_M_LEDC_STA0_CTRL(9));
3981 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3982 PHY_M_LEDC_LOS_CTRL(0xa) |
3983 PHY_M_LEDC_INIT_CTRL(0xa) |
3984 PHY_M_LEDC_STA1_CTRL(0xa) |
3985 PHY_M_LEDC_STA0_CTRL(0xa));
3988 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3989 PHY_M_LEDC_LOS_CTRL(1) |
3990 PHY_M_LEDC_INIT_CTRL(8) |
3991 PHY_M_LEDC_STA1_CTRL(7) |
3992 PHY_M_LEDC_STA0_CTRL(7));
3995 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3997 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3998 PHY_M_LED_MO_DUP(mode) |
3999 PHY_M_LED_MO_10(mode) |
4000 PHY_M_LED_MO_100(mode) |
4001 PHY_M_LED_MO_1000(mode) |
4002 PHY_M_LED_MO_RX(mode) |
4003 PHY_M_LED_MO_TX(mode));
4005 spin_unlock_bh(&sky2->phy_lock);
4008 /* blink LED's for finding board */
4009 static int sky2_set_phys_id(struct net_device *dev,
4010 enum ethtool_phys_id_state state)
4012 struct sky2_port *sky2 = netdev_priv(dev);
4015 case ETHTOOL_ID_ACTIVE:
4016 return 1; /* cycle on/off once per second */
4017 case ETHTOOL_ID_INACTIVE:
4018 sky2_led(sky2, MO_LED_NORM);
4021 sky2_led(sky2, MO_LED_ON);
4023 case ETHTOOL_ID_OFF:
4024 sky2_led(sky2, MO_LED_OFF);
4031 static void sky2_get_pauseparam(struct net_device *dev,
4032 struct ethtool_pauseparam *ecmd)
4034 struct sky2_port *sky2 = netdev_priv(dev);
4036 switch (sky2->flow_mode) {
4038 ecmd->tx_pause = ecmd->rx_pause = 0;
4041 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
4044 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
4047 ecmd->tx_pause = ecmd->rx_pause = 1;
4050 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_PAUSE)
4051 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
4054 static int sky2_set_pauseparam(struct net_device *dev,
4055 struct ethtool_pauseparam *ecmd)
4057 struct sky2_port *sky2 = netdev_priv(dev);
4059 if (ecmd->autoneg == AUTONEG_ENABLE)
4060 sky2->flags |= SKY2_FLAG_AUTO_PAUSE;
4062 sky2->flags &= ~SKY2_FLAG_AUTO_PAUSE;
4064 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
4066 if (netif_running(dev))
4067 sky2_phy_reinit(sky2);
4072 static int sky2_get_coalesce(struct net_device *dev,
4073 struct ethtool_coalesce *ecmd)
4075 struct sky2_port *sky2 = netdev_priv(dev);
4076 struct sky2_hw *hw = sky2->hw;
4078 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
4079 ecmd->tx_coalesce_usecs = 0;
4081 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
4082 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
4084 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
4086 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
4087 ecmd->rx_coalesce_usecs = 0;
4089 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
4090 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
4092 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
4094 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
4095 ecmd->rx_coalesce_usecs_irq = 0;
4097 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
4098 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
4101 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
4106 /* Note: this affect both ports */
4107 static int sky2_set_coalesce(struct net_device *dev,
4108 struct ethtool_coalesce *ecmd)
4110 struct sky2_port *sky2 = netdev_priv(dev);
4111 struct sky2_hw *hw = sky2->hw;
4112 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
4114 if (ecmd->tx_coalesce_usecs > tmax ||
4115 ecmd->rx_coalesce_usecs > tmax ||
4116 ecmd->rx_coalesce_usecs_irq > tmax)
4119 if (ecmd->tx_max_coalesced_frames >= sky2->tx_ring_size-1)
4121 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
4123 if (ecmd->rx_max_coalesced_frames_irq > RX_MAX_PENDING)
4126 if (ecmd->tx_coalesce_usecs == 0)
4127 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
4129 sky2_write32(hw, STAT_TX_TIMER_INI,
4130 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
4131 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
4133 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
4135 if (ecmd->rx_coalesce_usecs == 0)
4136 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
4138 sky2_write32(hw, STAT_LEV_TIMER_INI,
4139 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
4140 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
4142 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
4144 if (ecmd->rx_coalesce_usecs_irq == 0)
4145 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
4147 sky2_write32(hw, STAT_ISR_TIMER_INI,
4148 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
4149 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
4151 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
4156 * Hardware is limited to min of 128 and max of 2048 for ring size
4157 * and rounded up to next power of two
4158 * to avoid division in modulus calclation
4160 static unsigned long roundup_ring_size(unsigned long pending)
4162 return max(128ul, roundup_pow_of_two(pending+1));
4165 static void sky2_get_ringparam(struct net_device *dev,
4166 struct ethtool_ringparam *ering)
4168 struct sky2_port *sky2 = netdev_priv(dev);
4170 ering->rx_max_pending = RX_MAX_PENDING;
4171 ering->tx_max_pending = TX_MAX_PENDING;
4173 ering->rx_pending = sky2->rx_pending;
4174 ering->tx_pending = sky2->tx_pending;
4177 static int sky2_set_ringparam(struct net_device *dev,
4178 struct ethtool_ringparam *ering)
4180 struct sky2_port *sky2 = netdev_priv(dev);
4182 if (ering->rx_pending > RX_MAX_PENDING ||
4183 ering->rx_pending < 8 ||
4184 ering->tx_pending < TX_MIN_PENDING ||
4185 ering->tx_pending > TX_MAX_PENDING)
4190 sky2->rx_pending = ering->rx_pending;
4191 sky2->tx_pending = ering->tx_pending;
4192 sky2->tx_ring_size = roundup_ring_size(sky2->tx_pending);
4194 return sky2_reattach(dev);
4197 static int sky2_get_regs_len(struct net_device *dev)
4202 static int sky2_reg_access_ok(struct sky2_hw *hw, unsigned int b)
4204 /* This complicated switch statement is to make sure and
4205 * only access regions that are unreserved.
4206 * Some blocks are only valid on dual port cards.
4210 case 5: /* Tx Arbiter 2 */
4212 case 14 ... 15: /* TX2 */
4213 case 17: case 19: /* Ram Buffer 2 */
4214 case 22 ... 23: /* Tx Ram Buffer 2 */
4215 case 25: /* Rx MAC Fifo 1 */
4216 case 27: /* Tx MAC Fifo 2 */
4217 case 31: /* GPHY 2 */
4218 case 40 ... 47: /* Pattern Ram 2 */
4219 case 52: case 54: /* TCP Segmentation 2 */
4220 case 112 ... 116: /* GMAC 2 */
4221 return hw->ports > 1;
4223 case 0: /* Control */
4224 case 2: /* Mac address */
4225 case 4: /* Tx Arbiter 1 */
4226 case 7: /* PCI express reg */
4228 case 12 ... 13: /* TX1 */
4229 case 16: case 18:/* Rx Ram Buffer 1 */
4230 case 20 ... 21: /* Tx Ram Buffer 1 */
4231 case 24: /* Rx MAC Fifo 1 */
4232 case 26: /* Tx MAC Fifo 1 */
4233 case 28 ... 29: /* Descriptor and status unit */
4234 case 30: /* GPHY 1*/
4235 case 32 ... 39: /* Pattern Ram 1 */
4236 case 48: case 50: /* TCP Segmentation 1 */
4237 case 56 ... 60: /* PCI space */
4238 case 80 ... 84: /* GMAC 1 */
4247 * Returns copy of control register region
4248 * Note: ethtool_get_regs always provides full size (16k) buffer
4250 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
4253 const struct sky2_port *sky2 = netdev_priv(dev);
4254 const void __iomem *io = sky2->hw->regs;
4259 for (b = 0; b < 128; b++) {
4260 /* skip poisonous diagnostic ram region in block 3 */
4262 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
4263 else if (sky2_reg_access_ok(sky2->hw, b))
4264 memcpy_fromio(p, io, 128);
4273 static int sky2_get_eeprom_len(struct net_device *dev)
4275 struct sky2_port *sky2 = netdev_priv(dev);
4276 struct sky2_hw *hw = sky2->hw;
4279 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4280 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4283 static int sky2_vpd_wait(const struct sky2_hw *hw, int cap, u16 busy)
4285 unsigned long start = jiffies;
4287 while ( (sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F) == busy) {
4288 /* Can take up to 10.6 ms for write */
4289 if (time_after(jiffies, start + HZ/4)) {
4290 dev_err(&hw->pdev->dev, "VPD cycle timed out\n");
4299 static int sky2_vpd_read(struct sky2_hw *hw, int cap, void *data,
4300 u16 offset, size_t length)
4304 while (length > 0) {
4307 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
4308 rc = sky2_vpd_wait(hw, cap, 0);
4312 val = sky2_pci_read32(hw, cap + PCI_VPD_DATA);
4314 memcpy(data, &val, min(sizeof(val), length));
4315 offset += sizeof(u32);
4316 data += sizeof(u32);
4317 length -= sizeof(u32);
4323 static int sky2_vpd_write(struct sky2_hw *hw, int cap, const void *data,
4324 u16 offset, unsigned int length)
4329 for (i = 0; i < length; i += sizeof(u32)) {
4330 u32 val = *(u32 *)(data + i);
4332 sky2_pci_write32(hw, cap + PCI_VPD_DATA, val);
4333 sky2_pci_write32(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
4335 rc = sky2_vpd_wait(hw, cap, PCI_VPD_ADDR_F);
4342 static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4345 struct sky2_port *sky2 = netdev_priv(dev);
4346 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4351 eeprom->magic = SKY2_EEPROM_MAGIC;
4353 return sky2_vpd_read(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4356 static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4359 struct sky2_port *sky2 = netdev_priv(dev);
4360 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4365 if (eeprom->magic != SKY2_EEPROM_MAGIC)
4368 /* Partial writes not supported */
4369 if ((eeprom->offset & 3) || (eeprom->len & 3))
4372 return sky2_vpd_write(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4375 static netdev_features_t sky2_fix_features(struct net_device *dev,
4376 netdev_features_t features)
4378 const struct sky2_port *sky2 = netdev_priv(dev);
4379 const struct sky2_hw *hw = sky2->hw;
4381 /* In order to do Jumbo packets on these chips, need to turn off the
4382 * transmit store/forward. Therefore checksum offload won't work.
4384 if (dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U) {
4385 netdev_info(dev, "checksum offload not possible with jumbo frames\n");
4386 features &= ~(NETIF_F_TSO|NETIF_F_SG|NETIF_F_ALL_CSUM);
4389 /* Some hardware requires receive checksum for RSS to work. */
4390 if ( (features & NETIF_F_RXHASH) &&
4391 !(features & NETIF_F_RXCSUM) &&
4392 (sky2->hw->flags & SKY2_HW_RSS_CHKSUM)) {
4393 netdev_info(dev, "receive hashing forces receive checksum\n");
4394 features |= NETIF_F_RXCSUM;
4400 static int sky2_set_features(struct net_device *dev, netdev_features_t features)
4402 struct sky2_port *sky2 = netdev_priv(dev);
4403 netdev_features_t changed = dev->features ^ features;
4405 if ((changed & NETIF_F_RXCSUM) &&
4406 !(sky2->hw->flags & SKY2_HW_NEW_LE)) {
4407 sky2_write32(sky2->hw,
4408 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
4409 (features & NETIF_F_RXCSUM)
4410 ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
4413 if (changed & NETIF_F_RXHASH)
4414 rx_set_rss(dev, features);
4416 if (changed & (NETIF_F_HW_VLAN_CTAG_TX|NETIF_F_HW_VLAN_CTAG_RX))
4417 sky2_vlan_mode(dev, features);
4422 static const struct ethtool_ops sky2_ethtool_ops = {
4423 .get_settings = sky2_get_settings,
4424 .set_settings = sky2_set_settings,
4425 .get_drvinfo = sky2_get_drvinfo,
4426 .get_wol = sky2_get_wol,
4427 .set_wol = sky2_set_wol,
4428 .get_msglevel = sky2_get_msglevel,
4429 .set_msglevel = sky2_set_msglevel,
4430 .nway_reset = sky2_nway_reset,
4431 .get_regs_len = sky2_get_regs_len,
4432 .get_regs = sky2_get_regs,
4433 .get_link = ethtool_op_get_link,
4434 .get_eeprom_len = sky2_get_eeprom_len,
4435 .get_eeprom = sky2_get_eeprom,
4436 .set_eeprom = sky2_set_eeprom,
4437 .get_strings = sky2_get_strings,
4438 .get_coalesce = sky2_get_coalesce,
4439 .set_coalesce = sky2_set_coalesce,
4440 .get_ringparam = sky2_get_ringparam,
4441 .set_ringparam = sky2_set_ringparam,
4442 .get_pauseparam = sky2_get_pauseparam,
4443 .set_pauseparam = sky2_set_pauseparam,
4444 .set_phys_id = sky2_set_phys_id,
4445 .get_sset_count = sky2_get_sset_count,
4446 .get_ethtool_stats = sky2_get_ethtool_stats,
4449 #ifdef CONFIG_SKY2_DEBUG
4451 static struct dentry *sky2_debug;
4455 * Read and parse the first part of Vital Product Data
4457 #define VPD_SIZE 128
4458 #define VPD_MAGIC 0x82
4460 static const struct vpd_tag {
4464 { "PN", "Part Number" },
4465 { "EC", "Engineering Level" },
4466 { "MN", "Manufacturer" },
4467 { "SN", "Serial Number" },
4468 { "YA", "Asset Tag" },
4469 { "VL", "First Error Log Message" },
4470 { "VF", "Second Error Log Message" },
4471 { "VB", "Boot Agent ROM Configuration" },
4472 { "VE", "EFI UNDI Configuration" },
4475 static void sky2_show_vpd(struct seq_file *seq, struct sky2_hw *hw)
4483 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4484 vpd_size = 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4486 seq_printf(seq, "%s Product Data\n", pci_name(hw->pdev));
4487 buf = kmalloc(vpd_size, GFP_KERNEL);
4489 seq_puts(seq, "no memory!\n");
4493 if (pci_read_vpd(hw->pdev, 0, vpd_size, buf) < 0) {
4494 seq_puts(seq, "VPD read failed\n");
4498 if (buf[0] != VPD_MAGIC) {
4499 seq_printf(seq, "VPD tag mismatch: %#x\n", buf[0]);
4503 if (len == 0 || len > vpd_size - 4) {
4504 seq_printf(seq, "Invalid id length: %d\n", len);
4508 seq_printf(seq, "%.*s\n", len, buf + 3);
4511 while (offs < vpd_size - 4) {
4514 if (!memcmp("RW", buf + offs, 2)) /* end marker */
4516 len = buf[offs + 2];
4517 if (offs + len + 3 >= vpd_size)
4520 for (i = 0; i < ARRAY_SIZE(vpd_tags); i++) {
4521 if (!memcmp(vpd_tags[i].tag, buf + offs, 2)) {
4522 seq_printf(seq, " %s: %.*s\n",
4523 vpd_tags[i].label, len, buf + offs + 3);
4533 static int sky2_debug_show(struct seq_file *seq, void *v)
4535 struct net_device *dev = seq->private;
4536 const struct sky2_port *sky2 = netdev_priv(dev);
4537 struct sky2_hw *hw = sky2->hw;
4538 unsigned port = sky2->port;
4542 sky2_show_vpd(seq, hw);
4544 seq_printf(seq, "\nIRQ src=%x mask=%x control=%x\n",
4545 sky2_read32(hw, B0_ISRC),
4546 sky2_read32(hw, B0_IMSK),
4547 sky2_read32(hw, B0_Y2_SP_ICR));
4549 if (!netif_running(dev)) {
4550 seq_printf(seq, "network not running\n");
4554 napi_disable(&hw->napi);
4555 last = sky2_read16(hw, STAT_PUT_IDX);
4557 seq_printf(seq, "Status ring %u\n", hw->st_size);
4558 if (hw->st_idx == last)
4559 seq_puts(seq, "Status ring (empty)\n");
4561 seq_puts(seq, "Status ring\n");
4562 for (idx = hw->st_idx; idx != last && idx < hw->st_size;
4563 idx = RING_NEXT(idx, hw->st_size)) {
4564 const struct sky2_status_le *le = hw->st_le + idx;
4565 seq_printf(seq, "[%d] %#x %d %#x\n",
4566 idx, le->opcode, le->length, le->status);
4568 seq_puts(seq, "\n");
4571 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
4572 sky2->tx_cons, sky2->tx_prod,
4573 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
4574 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
4576 /* Dump contents of tx ring */
4578 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < sky2->tx_ring_size;
4579 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
4580 const struct sky2_tx_le *le = sky2->tx_le + idx;
4581 u32 a = le32_to_cpu(le->addr);
4584 seq_printf(seq, "%u:", idx);
4587 switch (le->opcode & ~HW_OWNER) {
4589 seq_printf(seq, " %#x:", a);
4592 seq_printf(seq, " mtu=%d", a);
4595 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
4598 seq_printf(seq, " csum=%#x", a);
4601 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
4604 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
4607 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
4610 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
4611 a, le16_to_cpu(le->length));
4614 if (le->ctrl & EOP) {
4615 seq_putc(seq, '\n');
4620 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
4621 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
4622 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
4623 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
4625 sky2_read32(hw, B0_Y2_SP_LISR);
4626 napi_enable(&hw->napi);
4630 static int sky2_debug_open(struct inode *inode, struct file *file)
4632 return single_open(file, sky2_debug_show, inode->i_private);
4635 static const struct file_operations sky2_debug_fops = {
4636 .owner = THIS_MODULE,
4637 .open = sky2_debug_open,
4639 .llseek = seq_lseek,
4640 .release = single_release,
4644 * Use network device events to create/remove/rename
4645 * debugfs file entries
4647 static int sky2_device_event(struct notifier_block *unused,
4648 unsigned long event, void *ptr)
4650 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
4651 struct sky2_port *sky2 = netdev_priv(dev);
4653 if (dev->netdev_ops->ndo_open != sky2_open || !sky2_debug)
4657 case NETDEV_CHANGENAME:
4658 if (sky2->debugfs) {
4659 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
4660 sky2_debug, dev->name);
4664 case NETDEV_GOING_DOWN:
4665 if (sky2->debugfs) {
4666 netdev_printk(KERN_DEBUG, dev, "remove debugfs\n");
4667 debugfs_remove(sky2->debugfs);
4668 sky2->debugfs = NULL;
4673 sky2->debugfs = debugfs_create_file(dev->name, S_IRUGO,
4676 if (IS_ERR(sky2->debugfs))
4677 sky2->debugfs = NULL;
4683 static struct notifier_block sky2_notifier = {
4684 .notifier_call = sky2_device_event,
4688 static __init void sky2_debug_init(void)
4692 ent = debugfs_create_dir("sky2", NULL);
4693 if (!ent || IS_ERR(ent))
4697 register_netdevice_notifier(&sky2_notifier);
4700 static __exit void sky2_debug_cleanup(void)
4703 unregister_netdevice_notifier(&sky2_notifier);
4704 debugfs_remove(sky2_debug);
4710 #define sky2_debug_init()
4711 #define sky2_debug_cleanup()
4714 /* Two copies of network device operations to handle special case of
4715 not allowing netpoll on second port */
4716 static const struct net_device_ops sky2_netdev_ops[2] = {
4718 .ndo_open = sky2_open,
4719 .ndo_stop = sky2_close,
4720 .ndo_start_xmit = sky2_xmit_frame,
4721 .ndo_do_ioctl = sky2_ioctl,
4722 .ndo_validate_addr = eth_validate_addr,
4723 .ndo_set_mac_address = sky2_set_mac_address,
4724 .ndo_set_rx_mode = sky2_set_multicast,
4725 .ndo_change_mtu = sky2_change_mtu,
4726 .ndo_fix_features = sky2_fix_features,
4727 .ndo_set_features = sky2_set_features,
4728 .ndo_tx_timeout = sky2_tx_timeout,
4729 .ndo_get_stats64 = sky2_get_stats,
4730 #ifdef CONFIG_NET_POLL_CONTROLLER
4731 .ndo_poll_controller = sky2_netpoll,
4735 .ndo_open = sky2_open,
4736 .ndo_stop = sky2_close,
4737 .ndo_start_xmit = sky2_xmit_frame,
4738 .ndo_do_ioctl = sky2_ioctl,
4739 .ndo_validate_addr = eth_validate_addr,
4740 .ndo_set_mac_address = sky2_set_mac_address,
4741 .ndo_set_rx_mode = sky2_set_multicast,
4742 .ndo_change_mtu = sky2_change_mtu,
4743 .ndo_fix_features = sky2_fix_features,
4744 .ndo_set_features = sky2_set_features,
4745 .ndo_tx_timeout = sky2_tx_timeout,
4746 .ndo_get_stats64 = sky2_get_stats,
4750 /* Initialize network device */
4751 static struct net_device *sky2_init_netdev(struct sky2_hw *hw, unsigned port,
4752 int highmem, int wol)
4754 struct sky2_port *sky2;
4755 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
4761 SET_NETDEV_DEV(dev, &hw->pdev->dev);
4762 dev->irq = hw->pdev->irq;
4763 dev->ethtool_ops = &sky2_ethtool_ops;
4764 dev->watchdog_timeo = TX_WATCHDOG;
4765 dev->netdev_ops = &sky2_netdev_ops[port];
4767 sky2 = netdev_priv(dev);
4770 sky2->msg_enable = netif_msg_init(debug, default_msg);
4772 u64_stats_init(&sky2->tx_stats.syncp);
4773 u64_stats_init(&sky2->rx_stats.syncp);
4775 /* Auto speed and flow control */
4776 sky2->flags = SKY2_FLAG_AUTO_SPEED | SKY2_FLAG_AUTO_PAUSE;
4777 if (hw->chip_id != CHIP_ID_YUKON_XL)
4778 dev->hw_features |= NETIF_F_RXCSUM;
4780 sky2->flow_mode = FC_BOTH;
4784 sky2->advertising = sky2_supported_modes(hw);
4787 spin_lock_init(&sky2->phy_lock);
4789 sky2->tx_pending = TX_DEF_PENDING;
4790 sky2->tx_ring_size = roundup_ring_size(TX_DEF_PENDING);
4791 sky2->rx_pending = RX_DEF_PENDING;
4793 hw->dev[port] = dev;
4797 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO;
4800 dev->features |= NETIF_F_HIGHDMA;
4802 /* Enable receive hashing unless hardware is known broken */
4803 if (!(hw->flags & SKY2_HW_RSS_BROKEN))
4804 dev->hw_features |= NETIF_F_RXHASH;
4806 if (!(hw->flags & SKY2_HW_VLAN_BROKEN)) {
4807 dev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX |
4808 NETIF_F_HW_VLAN_CTAG_RX;
4809 dev->vlan_features |= SKY2_VLAN_OFFLOADS;
4812 dev->features |= dev->hw_features;
4814 /* try to get mac address in the following order:
4815 * 1) from device tree data
4816 * 2) from internal registers set by bootloader
4818 iap = of_get_mac_address(hw->pdev->dev.of_node);
4820 memcpy(dev->dev_addr, iap, ETH_ALEN);
4822 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8,
4828 static void sky2_show_addr(struct net_device *dev)
4830 const struct sky2_port *sky2 = netdev_priv(dev);
4832 netif_info(sky2, probe, dev, "addr %pM\n", dev->dev_addr);
4835 /* Handle software interrupt used during MSI test */
4836 static irqreturn_t sky2_test_intr(int irq, void *dev_id)
4838 struct sky2_hw *hw = dev_id;
4839 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4844 if (status & Y2_IS_IRQ_SW) {
4845 hw->flags |= SKY2_HW_USE_MSI;
4846 wake_up(&hw->msi_wait);
4847 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4849 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4854 /* Test interrupt path by forcing a a software IRQ */
4855 static int sky2_test_msi(struct sky2_hw *hw)
4857 struct pci_dev *pdev = hw->pdev;
4860 init_waitqueue_head(&hw->msi_wait);
4862 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4864 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4868 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4870 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4871 sky2_read8(hw, B0_CTST);
4873 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4875 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4876 /* MSI test failed, go back to INTx mode */
4877 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4878 "switching to INTx mode.\n");
4881 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4884 sky2_write32(hw, B0_IMSK, 0);
4885 sky2_read32(hw, B0_IMSK);
4887 free_irq(pdev->irq, hw);
4892 /* This driver supports yukon2 chipset only */
4893 static const char *sky2_name(u8 chipid, char *buf, int sz)
4895 const char *name[] = {
4897 "EC Ultra", /* 0xb4 */
4898 "Extreme", /* 0xb5 */
4902 "Supreme", /* 0xb9 */
4904 "Unknown", /* 0xbb */
4905 "Optima", /* 0xbc */
4906 "OptimaEEE", /* 0xbd */
4907 "Optima 2", /* 0xbe */
4910 if (chipid >= CHIP_ID_YUKON_XL && chipid <= CHIP_ID_YUKON_OP_2)
4911 strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
4913 snprintf(buf, sz, "(chip %#x)", chipid);
4917 static int sky2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4919 struct net_device *dev, *dev1;
4921 int err, using_dac = 0, wol_default;
4925 err = pci_enable_device(pdev);
4927 dev_err(&pdev->dev, "cannot enable PCI device\n");
4931 /* Get configuration information
4932 * Note: only regular PCI config access once to test for HW issues
4933 * other PCI access through shared memory for speed and to
4934 * avoid MMCONFIG problems.
4936 err = pci_read_config_dword(pdev, PCI_DEV_REG2, ®);
4938 dev_err(&pdev->dev, "PCI read config failed\n");
4939 goto err_out_disable;
4943 dev_err(&pdev->dev, "PCI configuration read error\n");
4945 goto err_out_disable;
4948 err = pci_request_regions(pdev, DRV_NAME);
4950 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4951 goto err_out_disable;
4954 pci_set_master(pdev);
4956 if (sizeof(dma_addr_t) > sizeof(u32) &&
4957 !(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))) {
4959 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4961 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4962 "for consistent allocations\n");
4963 goto err_out_free_regions;
4966 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4968 dev_err(&pdev->dev, "no usable DMA configuration\n");
4969 goto err_out_free_regions;
4975 /* The sk98lin vendor driver uses hardware byte swapping but
4976 * this driver uses software swapping.
4978 reg &= ~PCI_REV_DESC;
4979 err = pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
4981 dev_err(&pdev->dev, "PCI write config failed\n");
4982 goto err_out_free_regions;
4986 wol_default = device_may_wakeup(&pdev->dev) ? WAKE_MAGIC : 0;
4990 hw = kzalloc(sizeof(*hw) + strlen(DRV_NAME "@pci:")
4991 + strlen(pci_name(pdev)) + 1, GFP_KERNEL);
4993 goto err_out_free_regions;
4996 sprintf(hw->irq_name, DRV_NAME "@pci:%s", pci_name(pdev));
4998 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
5000 dev_err(&pdev->dev, "cannot map device registers\n");
5001 goto err_out_free_hw;
5004 err = sky2_init(hw);
5006 goto err_out_iounmap;
5008 /* ring for status responses */
5009 hw->st_size = hw->ports * roundup_pow_of_two(3*RX_MAX_PENDING + TX_MAX_PENDING);
5010 hw->st_le = pci_alloc_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
5017 dev_info(&pdev->dev, "Yukon-2 %s chip revision %d\n",
5018 sky2_name(hw->chip_id, buf1, sizeof(buf1)), hw->chip_rev);
5022 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
5025 goto err_out_free_pci;
5028 if (!disable_msi && pci_enable_msi(pdev) == 0) {
5029 err = sky2_test_msi(hw);
5031 pci_disable_msi(pdev);
5032 if (err != -EOPNOTSUPP)
5033 goto err_out_free_netdev;
5037 netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
5039 err = register_netdev(dev);
5041 dev_err(&pdev->dev, "cannot register net device\n");
5042 goto err_out_free_netdev;
5045 netif_carrier_off(dev);
5047 sky2_show_addr(dev);
5049 if (hw->ports > 1) {
5050 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
5053 goto err_out_unregister;
5056 err = register_netdev(dev1);
5058 dev_err(&pdev->dev, "cannot register second net device\n");
5059 goto err_out_free_dev1;
5062 err = sky2_setup_irq(hw, hw->irq_name);
5064 goto err_out_unregister_dev1;
5066 sky2_show_addr(dev1);
5069 setup_timer(&hw->watchdog_timer, sky2_watchdog, (unsigned long) hw);
5070 INIT_WORK(&hw->restart_work, sky2_restart);
5072 pci_set_drvdata(pdev, hw);
5073 pdev->d3_delay = 150;
5077 err_out_unregister_dev1:
5078 unregister_netdev(dev1);
5082 unregister_netdev(dev);
5083 err_out_free_netdev:
5084 if (hw->flags & SKY2_HW_USE_MSI)
5085 pci_disable_msi(pdev);
5088 pci_free_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
5089 hw->st_le, hw->st_dma);
5091 sky2_write8(hw, B0_CTST, CS_RST_SET);
5096 err_out_free_regions:
5097 pci_release_regions(pdev);
5099 pci_disable_device(pdev);
5104 static void sky2_remove(struct pci_dev *pdev)
5106 struct sky2_hw *hw = pci_get_drvdata(pdev);
5112 del_timer_sync(&hw->watchdog_timer);
5113 cancel_work_sync(&hw->restart_work);
5115 for (i = hw->ports-1; i >= 0; --i)
5116 unregister_netdev(hw->dev[i]);
5118 sky2_write32(hw, B0_IMSK, 0);
5119 sky2_read32(hw, B0_IMSK);
5123 sky2_write8(hw, B0_CTST, CS_RST_SET);
5124 sky2_read8(hw, B0_CTST);
5126 if (hw->ports > 1) {
5127 napi_disable(&hw->napi);
5128 free_irq(pdev->irq, hw);
5131 if (hw->flags & SKY2_HW_USE_MSI)
5132 pci_disable_msi(pdev);
5133 pci_free_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
5134 hw->st_le, hw->st_dma);
5135 pci_release_regions(pdev);
5136 pci_disable_device(pdev);
5138 for (i = hw->ports-1; i >= 0; --i)
5139 free_netdev(hw->dev[i]);
5145 static int sky2_suspend(struct device *dev)
5147 struct pci_dev *pdev = to_pci_dev(dev);
5148 struct sky2_hw *hw = pci_get_drvdata(pdev);
5154 del_timer_sync(&hw->watchdog_timer);
5155 cancel_work_sync(&hw->restart_work);
5160 for (i = 0; i < hw->ports; i++) {
5161 struct net_device *dev = hw->dev[i];
5162 struct sky2_port *sky2 = netdev_priv(dev);
5165 sky2_wol_init(sky2);
5174 #ifdef CONFIG_PM_SLEEP
5175 static int sky2_resume(struct device *dev)
5177 struct pci_dev *pdev = to_pci_dev(dev);
5178 struct sky2_hw *hw = pci_get_drvdata(pdev);
5184 /* Re-enable all clocks */
5185 err = pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
5187 dev_err(&pdev->dev, "PCI write config failed\n");
5199 dev_err(&pdev->dev, "resume failed (%d)\n", err);
5200 pci_disable_device(pdev);
5204 static SIMPLE_DEV_PM_OPS(sky2_pm_ops, sky2_suspend, sky2_resume);
5205 #define SKY2_PM_OPS (&sky2_pm_ops)
5209 #define SKY2_PM_OPS NULL
5212 static void sky2_shutdown(struct pci_dev *pdev)
5214 sky2_suspend(&pdev->dev);
5215 pci_wake_from_d3(pdev, device_may_wakeup(&pdev->dev));
5216 pci_set_power_state(pdev, PCI_D3hot);
5219 static struct pci_driver sky2_driver = {
5221 .id_table = sky2_id_table,
5222 .probe = sky2_probe,
5223 .remove = sky2_remove,
5224 .shutdown = sky2_shutdown,
5225 .driver.pm = SKY2_PM_OPS,
5228 static int __init sky2_init_module(void)
5230 pr_info("driver version " DRV_VERSION "\n");
5233 return pci_register_driver(&sky2_driver);
5236 static void __exit sky2_cleanup_module(void)
5238 pci_unregister_driver(&sky2_driver);
5239 sky2_debug_cleanup();
5242 module_init(sky2_init_module);
5243 module_exit(sky2_cleanup_module);
5245 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
5246 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
5247 MODULE_LICENSE("GPL");
5248 MODULE_VERSION(DRV_VERSION);