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);
1293 /* Enable/disable receive hash calculation (RSS) */
1294 static void rx_set_rss(struct net_device *dev, netdev_features_t features)
1296 struct sky2_port *sky2 = netdev_priv(dev);
1297 struct sky2_hw *hw = sky2->hw;
1300 /* Supports IPv6 and other modes */
1301 if (hw->flags & SKY2_HW_NEW_LE) {
1303 sky2_write32(hw, SK_REG(sky2->port, RSS_CFG), HASH_ALL);
1306 /* Program RSS initial values */
1307 if (features & NETIF_F_RXHASH) {
1310 netdev_rss_key_fill(rss_key, sizeof(rss_key));
1311 for (i = 0; i < nkeys; i++)
1312 sky2_write32(hw, SK_REG(sky2->port, RSS_KEY + i * 4),
1315 /* Need to turn on (undocumented) flag to make hashing work */
1316 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T),
1319 sky2_write32(hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1320 BMU_ENA_RX_RSS_HASH);
1322 sky2_write32(hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1323 BMU_DIS_RX_RSS_HASH);
1327 * The RX Stop command will not work for Yukon-2 if the BMU does not
1328 * reach the end of packet and since we can't make sure that we have
1329 * incoming data, we must reset the BMU while it is not doing a DMA
1330 * transfer. Since it is possible that the RX path is still active,
1331 * the RX RAM buffer will be stopped first, so any possible incoming
1332 * data will not trigger a DMA. After the RAM buffer is stopped, the
1333 * BMU is polled until any DMA in progress is ended and only then it
1336 static void sky2_rx_stop(struct sky2_port *sky2)
1338 struct sky2_hw *hw = sky2->hw;
1339 unsigned rxq = rxqaddr[sky2->port];
1342 /* disable the RAM Buffer receive queue */
1343 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1345 for (i = 0; i < 0xffff; i++)
1346 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1347 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1350 netdev_warn(sky2->netdev, "receiver stop failed\n");
1352 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1354 /* reset the Rx prefetch unit */
1355 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1359 /* Clean out receive buffer area, assumes receiver hardware stopped */
1360 static void sky2_rx_clean(struct sky2_port *sky2)
1364 memset(sky2->rx_le, 0, RX_LE_BYTES);
1365 for (i = 0; i < sky2->rx_pending; i++) {
1366 struct rx_ring_info *re = sky2->rx_ring + i;
1369 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1376 /* Basic MII support */
1377 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1379 struct mii_ioctl_data *data = if_mii(ifr);
1380 struct sky2_port *sky2 = netdev_priv(dev);
1381 struct sky2_hw *hw = sky2->hw;
1382 int err = -EOPNOTSUPP;
1384 if (!netif_running(dev))
1385 return -ENODEV; /* Phy still in reset */
1389 data->phy_id = PHY_ADDR_MARV;
1395 spin_lock_bh(&sky2->phy_lock);
1396 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1397 spin_unlock_bh(&sky2->phy_lock);
1399 data->val_out = val;
1404 spin_lock_bh(&sky2->phy_lock);
1405 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1407 spin_unlock_bh(&sky2->phy_lock);
1413 #define SKY2_VLAN_OFFLOADS (NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO)
1415 static void sky2_vlan_mode(struct net_device *dev, netdev_features_t features)
1417 struct sky2_port *sky2 = netdev_priv(dev);
1418 struct sky2_hw *hw = sky2->hw;
1419 u16 port = sky2->port;
1421 if (features & NETIF_F_HW_VLAN_CTAG_RX)
1422 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1425 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1428 if (features & NETIF_F_HW_VLAN_CTAG_TX) {
1429 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1432 dev->vlan_features |= SKY2_VLAN_OFFLOADS;
1434 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1437 /* Can't do transmit offload of vlan without hw vlan */
1438 dev->vlan_features &= ~SKY2_VLAN_OFFLOADS;
1442 /* Amount of required worst case padding in rx buffer */
1443 static inline unsigned sky2_rx_pad(const struct sky2_hw *hw)
1445 return (hw->flags & SKY2_HW_RAM_BUFFER) ? 8 : 2;
1449 * Allocate an skb for receiving. If the MTU is large enough
1450 * make the skb non-linear with a fragment list of pages.
1452 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2, gfp_t gfp)
1454 struct sk_buff *skb;
1457 skb = __netdev_alloc_skb(sky2->netdev,
1458 sky2->rx_data_size + sky2_rx_pad(sky2->hw),
1463 if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) {
1464 unsigned char *start;
1466 * Workaround for a bug in FIFO that cause hang
1467 * if the FIFO if the receive buffer is not 64 byte aligned.
1468 * The buffer returned from netdev_alloc_skb is
1469 * aligned except if slab debugging is enabled.
1471 start = PTR_ALIGN(skb->data, 8);
1472 skb_reserve(skb, start - skb->data);
1474 skb_reserve(skb, NET_IP_ALIGN);
1476 for (i = 0; i < sky2->rx_nfrags; i++) {
1477 struct page *page = alloc_page(gfp);
1481 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1491 static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1493 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1496 static int sky2_alloc_rx_skbs(struct sky2_port *sky2)
1498 struct sky2_hw *hw = sky2->hw;
1501 sky2->rx_data_size = sky2_get_rx_data_size(sky2);
1504 for (i = 0; i < sky2->rx_pending; i++) {
1505 struct rx_ring_info *re = sky2->rx_ring + i;
1507 re->skb = sky2_rx_alloc(sky2, GFP_KERNEL);
1511 if (sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size)) {
1512 dev_kfree_skb(re->skb);
1521 * Setup receiver buffer pool.
1522 * Normal case this ends up creating one list element for skb
1523 * in the receive ring. Worst case if using large MTU and each
1524 * allocation falls on a different 64 bit region, that results
1525 * in 6 list elements per ring entry.
1526 * One element is used for checksum enable/disable, and one
1527 * extra to avoid wrap.
1529 static void sky2_rx_start(struct sky2_port *sky2)
1531 struct sky2_hw *hw = sky2->hw;
1532 struct rx_ring_info *re;
1533 unsigned rxq = rxqaddr[sky2->port];
1536 sky2->rx_put = sky2->rx_next = 0;
1539 /* On PCI express lowering the watermark gives better performance */
1540 if (pci_is_pcie(hw->pdev))
1541 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1543 /* These chips have no ram buffer?
1544 * MAC Rx RAM Read is controlled by hardware */
1545 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1546 hw->chip_rev > CHIP_REV_YU_EC_U_A0)
1547 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1549 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1551 if (!(hw->flags & SKY2_HW_NEW_LE))
1552 rx_set_checksum(sky2);
1554 if (!(hw->flags & SKY2_HW_RSS_BROKEN))
1555 rx_set_rss(sky2->netdev, sky2->netdev->features);
1557 /* submit Rx ring */
1558 for (i = 0; i < sky2->rx_pending; i++) {
1559 re = sky2->rx_ring + i;
1560 sky2_rx_submit(sky2, re);
1564 * The receiver hangs if it receives frames larger than the
1565 * packet buffer. As a workaround, truncate oversize frames, but
1566 * the register is limited to 9 bits, so if you do frames > 2052
1567 * you better get the MTU right!
1569 thresh = sky2_get_rx_threshold(sky2);
1571 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1573 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1574 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1577 /* Tell chip about available buffers */
1578 sky2_rx_update(sky2, rxq);
1580 if (hw->chip_id == CHIP_ID_YUKON_EX ||
1581 hw->chip_id == CHIP_ID_YUKON_SUPR) {
1583 * Disable flushing of non ASF packets;
1584 * must be done after initializing the BMUs;
1585 * drivers without ASF support should do this too, otherwise
1586 * it may happen that they cannot run on ASF devices;
1587 * remember that the MAC FIFO isn't reset during initialization.
1589 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_MACSEC_FLUSH_OFF);
1592 if (hw->chip_id >= CHIP_ID_YUKON_SUPR) {
1593 /* Enable RX Home Address & Routing Header checksum fix */
1594 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_FL_CTRL),
1595 RX_IPV6_SA_MOB_ENA | RX_IPV6_DA_MOB_ENA);
1597 /* Enable TX Home Address & Routing Header checksum fix */
1598 sky2_write32(hw, Q_ADDR(txqaddr[sky2->port], Q_TEST),
1599 TBMU_TEST_HOME_ADD_FIX_EN | TBMU_TEST_ROUTING_ADD_FIX_EN);
1603 static int sky2_alloc_buffers(struct sky2_port *sky2)
1605 struct sky2_hw *hw = sky2->hw;
1607 /* must be power of 2 */
1608 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1609 sky2->tx_ring_size *
1610 sizeof(struct sky2_tx_le),
1615 sky2->tx_ring = kcalloc(sky2->tx_ring_size, sizeof(struct tx_ring_info),
1620 sky2->rx_le = pci_zalloc_consistent(hw->pdev, RX_LE_BYTES,
1625 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1630 return sky2_alloc_rx_skbs(sky2);
1635 static void sky2_free_buffers(struct sky2_port *sky2)
1637 struct sky2_hw *hw = sky2->hw;
1639 sky2_rx_clean(sky2);
1642 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1643 sky2->rx_le, sky2->rx_le_map);
1647 pci_free_consistent(hw->pdev,
1648 sky2->tx_ring_size * sizeof(struct sky2_tx_le),
1649 sky2->tx_le, sky2->tx_le_map);
1652 kfree(sky2->tx_ring);
1653 kfree(sky2->rx_ring);
1655 sky2->tx_ring = NULL;
1656 sky2->rx_ring = NULL;
1659 static void sky2_hw_up(struct sky2_port *sky2)
1661 struct sky2_hw *hw = sky2->hw;
1662 unsigned port = sky2->port;
1665 struct net_device *otherdev = hw->dev[sky2->port^1];
1670 * On dual port PCI-X card, there is an problem where status
1671 * can be received out of order due to split transactions
1673 if (otherdev && netif_running(otherdev) &&
1674 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1677 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1678 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1679 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1682 sky2_mac_init(hw, port);
1684 /* Register is number of 4K blocks on internal RAM buffer. */
1685 ramsize = sky2_read8(hw, B2_E_0) * 4;
1689 netdev_dbg(sky2->netdev, "ram buffer %dK\n", ramsize);
1691 rxspace = ramsize / 2;
1693 rxspace = 8 + (2*(ramsize - 16))/3;
1695 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1696 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1698 /* Make sure SyncQ is disabled */
1699 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1703 sky2_qset(hw, txqaddr[port]);
1705 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1706 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1707 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1709 /* Set almost empty threshold */
1710 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1711 hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1712 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1714 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1715 sky2->tx_ring_size - 1);
1717 sky2_vlan_mode(sky2->netdev, sky2->netdev->features);
1718 netdev_update_features(sky2->netdev);
1720 sky2_rx_start(sky2);
1723 /* Setup device IRQ and enable napi to process */
1724 static int sky2_setup_irq(struct sky2_hw *hw, const char *name)
1726 struct pci_dev *pdev = hw->pdev;
1729 err = request_irq(pdev->irq, sky2_intr,
1730 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
1733 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
1735 hw->flags |= SKY2_HW_IRQ_SETUP;
1737 napi_enable(&hw->napi);
1738 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
1739 sky2_read32(hw, B0_IMSK);
1746 /* Bring up network interface. */
1747 static int sky2_open(struct net_device *dev)
1749 struct sky2_port *sky2 = netdev_priv(dev);
1750 struct sky2_hw *hw = sky2->hw;
1751 unsigned port = sky2->port;
1755 netif_carrier_off(dev);
1757 err = sky2_alloc_buffers(sky2);
1761 /* With single port, IRQ is setup when device is brought up */
1762 if (hw->ports == 1 && (err = sky2_setup_irq(hw, dev->name)))
1767 /* Enable interrupts from phy/mac for port */
1768 imask = sky2_read32(hw, B0_IMSK);
1770 if (hw->chip_id == CHIP_ID_YUKON_OPT ||
1771 hw->chip_id == CHIP_ID_YUKON_PRM ||
1772 hw->chip_id == CHIP_ID_YUKON_OP_2)
1773 imask |= Y2_IS_PHY_QLNK; /* enable PHY Quick Link */
1775 imask |= portirq_msk[port];
1776 sky2_write32(hw, B0_IMSK, imask);
1777 sky2_read32(hw, B0_IMSK);
1779 netif_info(sky2, ifup, dev, "enabling interface\n");
1784 sky2_free_buffers(sky2);
1788 /* Modular subtraction in ring */
1789 static inline int tx_inuse(const struct sky2_port *sky2)
1791 return (sky2->tx_prod - sky2->tx_cons) & (sky2->tx_ring_size - 1);
1794 /* Number of list elements available for next tx */
1795 static inline int tx_avail(const struct sky2_port *sky2)
1797 return sky2->tx_pending - tx_inuse(sky2);
1800 /* Estimate of number of transmit list elements required */
1801 static unsigned tx_le_req(const struct sk_buff *skb)
1805 count = (skb_shinfo(skb)->nr_frags + 1)
1806 * (sizeof(dma_addr_t) / sizeof(u32));
1808 if (skb_is_gso(skb))
1810 else if (sizeof(dma_addr_t) == sizeof(u32))
1811 ++count; /* possible vlan */
1813 if (skb->ip_summed == CHECKSUM_PARTIAL)
1819 static void sky2_tx_unmap(struct pci_dev *pdev, struct tx_ring_info *re)
1821 if (re->flags & TX_MAP_SINGLE)
1822 pci_unmap_single(pdev, dma_unmap_addr(re, mapaddr),
1823 dma_unmap_len(re, maplen),
1825 else if (re->flags & TX_MAP_PAGE)
1826 pci_unmap_page(pdev, dma_unmap_addr(re, mapaddr),
1827 dma_unmap_len(re, maplen),
1833 * Put one packet in ring for transmit.
1834 * A single packet can generate multiple list elements, and
1835 * the number of ring elements will probably be less than the number
1836 * of list elements used.
1838 static netdev_tx_t sky2_xmit_frame(struct sk_buff *skb,
1839 struct net_device *dev)
1841 struct sky2_port *sky2 = netdev_priv(dev);
1842 struct sky2_hw *hw = sky2->hw;
1843 struct sky2_tx_le *le = NULL;
1844 struct tx_ring_info *re;
1852 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1853 return NETDEV_TX_BUSY;
1855 len = skb_headlen(skb);
1856 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1858 if (pci_dma_mapping_error(hw->pdev, mapping))
1861 slot = sky2->tx_prod;
1862 netif_printk(sky2, tx_queued, KERN_DEBUG, dev,
1863 "tx queued, slot %u, len %d\n", slot, skb->len);
1865 /* Send high bits if needed */
1866 upper = upper_32_bits(mapping);
1867 if (upper != sky2->tx_last_upper) {
1868 le = get_tx_le(sky2, &slot);
1869 le->addr = cpu_to_le32(upper);
1870 sky2->tx_last_upper = upper;
1871 le->opcode = OP_ADDR64 | HW_OWNER;
1874 /* Check for TCP Segmentation Offload */
1875 mss = skb_shinfo(skb)->gso_size;
1878 if (!(hw->flags & SKY2_HW_NEW_LE))
1879 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1881 if (mss != sky2->tx_last_mss) {
1882 le = get_tx_le(sky2, &slot);
1883 le->addr = cpu_to_le32(mss);
1885 if (hw->flags & SKY2_HW_NEW_LE)
1886 le->opcode = OP_MSS | HW_OWNER;
1888 le->opcode = OP_LRGLEN | HW_OWNER;
1889 sky2->tx_last_mss = mss;
1895 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1896 if (vlan_tx_tag_present(skb)) {
1898 le = get_tx_le(sky2, &slot);
1900 le->opcode = OP_VLAN|HW_OWNER;
1902 le->opcode |= OP_VLAN;
1903 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1907 /* Handle TCP checksum offload */
1908 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1909 /* On Yukon EX (some versions) encoding change. */
1910 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1911 ctrl |= CALSUM; /* auto checksum */
1913 const unsigned offset = skb_transport_offset(skb);
1916 tcpsum = offset << 16; /* sum start */
1917 tcpsum |= offset + skb->csum_offset; /* sum write */
1919 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1920 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1923 if (tcpsum != sky2->tx_tcpsum) {
1924 sky2->tx_tcpsum = tcpsum;
1926 le = get_tx_le(sky2, &slot);
1927 le->addr = cpu_to_le32(tcpsum);
1928 le->length = 0; /* initial checksum value */
1929 le->ctrl = 1; /* one packet */
1930 le->opcode = OP_TCPLISW | HW_OWNER;
1935 re = sky2->tx_ring + slot;
1936 re->flags = TX_MAP_SINGLE;
1937 dma_unmap_addr_set(re, mapaddr, mapping);
1938 dma_unmap_len_set(re, maplen, len);
1940 le = get_tx_le(sky2, &slot);
1941 le->addr = cpu_to_le32(lower_32_bits(mapping));
1942 le->length = cpu_to_le16(len);
1944 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1947 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1948 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1950 mapping = skb_frag_dma_map(&hw->pdev->dev, frag, 0,
1951 skb_frag_size(frag), DMA_TO_DEVICE);
1953 if (dma_mapping_error(&hw->pdev->dev, mapping))
1954 goto mapping_unwind;
1956 upper = upper_32_bits(mapping);
1957 if (upper != sky2->tx_last_upper) {
1958 le = get_tx_le(sky2, &slot);
1959 le->addr = cpu_to_le32(upper);
1960 sky2->tx_last_upper = upper;
1961 le->opcode = OP_ADDR64 | HW_OWNER;
1964 re = sky2->tx_ring + slot;
1965 re->flags = TX_MAP_PAGE;
1966 dma_unmap_addr_set(re, mapaddr, mapping);
1967 dma_unmap_len_set(re, maplen, skb_frag_size(frag));
1969 le = get_tx_le(sky2, &slot);
1970 le->addr = cpu_to_le32(lower_32_bits(mapping));
1971 le->length = cpu_to_le16(skb_frag_size(frag));
1973 le->opcode = OP_BUFFER | HW_OWNER;
1979 sky2->tx_prod = slot;
1981 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1982 netif_stop_queue(dev);
1984 netdev_sent_queue(dev, skb->len);
1985 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1987 return NETDEV_TX_OK;
1990 for (i = sky2->tx_prod; i != slot; i = RING_NEXT(i, sky2->tx_ring_size)) {
1991 re = sky2->tx_ring + i;
1993 sky2_tx_unmap(hw->pdev, re);
1997 if (net_ratelimit())
1998 dev_warn(&hw->pdev->dev, "%s: tx mapping error\n", dev->name);
1999 dev_kfree_skb_any(skb);
2000 return NETDEV_TX_OK;
2004 * Free ring elements from starting at tx_cons until "done"
2007 * 1. The hardware will tell us about partial completion of multi-part
2008 * buffers so make sure not to free skb to early.
2009 * 2. This may run in parallel start_xmit because the it only
2010 * looks at the tail of the queue of FIFO (tx_cons), not
2011 * the head (tx_prod)
2013 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
2015 struct net_device *dev = sky2->netdev;
2017 unsigned int bytes_compl = 0, pkts_compl = 0;
2019 BUG_ON(done >= sky2->tx_ring_size);
2021 for (idx = sky2->tx_cons; idx != done;
2022 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
2023 struct tx_ring_info *re = sky2->tx_ring + idx;
2024 struct sk_buff *skb = re->skb;
2026 sky2_tx_unmap(sky2->hw->pdev, re);
2029 netif_printk(sky2, tx_done, KERN_DEBUG, dev,
2030 "tx done %u\n", idx);
2033 bytes_compl += skb->len;
2036 dev_kfree_skb_any(skb);
2038 sky2->tx_next = RING_NEXT(idx, sky2->tx_ring_size);
2042 sky2->tx_cons = idx;
2045 netdev_completed_queue(dev, pkts_compl, bytes_compl);
2047 u64_stats_update_begin(&sky2->tx_stats.syncp);
2048 sky2->tx_stats.packets += pkts_compl;
2049 sky2->tx_stats.bytes += bytes_compl;
2050 u64_stats_update_end(&sky2->tx_stats.syncp);
2053 static void sky2_tx_reset(struct sky2_hw *hw, unsigned port)
2055 /* Disable Force Sync bit and Enable Alloc bit */
2056 sky2_write8(hw, SK_REG(port, TXA_CTRL),
2057 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
2059 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
2060 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
2061 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
2063 /* Reset the PCI FIFO of the async Tx queue */
2064 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
2065 BMU_RST_SET | BMU_FIFO_RST);
2067 /* Reset the Tx prefetch units */
2068 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
2071 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
2072 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
2074 sky2_read32(hw, B0_CTST);
2077 static void sky2_hw_down(struct sky2_port *sky2)
2079 struct sky2_hw *hw = sky2->hw;
2080 unsigned port = sky2->port;
2083 /* Force flow control off */
2084 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2086 /* Stop transmitter */
2087 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
2088 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
2090 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
2091 RB_RST_SET | RB_DIS_OP_MD);
2093 ctrl = gma_read16(hw, port, GM_GP_CTRL);
2094 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
2095 gma_write16(hw, port, GM_GP_CTRL, ctrl);
2097 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
2099 /* Workaround shared GMAC reset */
2100 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 &&
2101 port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
2102 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
2104 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
2106 /* Force any delayed status interrupt and NAPI */
2107 sky2_write32(hw, STAT_LEV_TIMER_CNT, 0);
2108 sky2_write32(hw, STAT_TX_TIMER_CNT, 0);
2109 sky2_write32(hw, STAT_ISR_TIMER_CNT, 0);
2110 sky2_read8(hw, STAT_ISR_TIMER_CTRL);
2114 spin_lock_bh(&sky2->phy_lock);
2115 sky2_phy_power_down(hw, port);
2116 spin_unlock_bh(&sky2->phy_lock);
2118 sky2_tx_reset(hw, port);
2120 /* Free any pending frames stuck in HW queue */
2121 sky2_tx_complete(sky2, sky2->tx_prod);
2124 /* Network shutdown */
2125 static int sky2_close(struct net_device *dev)
2127 struct sky2_port *sky2 = netdev_priv(dev);
2128 struct sky2_hw *hw = sky2->hw;
2130 /* Never really got started! */
2134 netif_info(sky2, ifdown, dev, "disabling interface\n");
2136 if (hw->ports == 1) {
2137 sky2_write32(hw, B0_IMSK, 0);
2138 sky2_read32(hw, B0_IMSK);
2140 napi_disable(&hw->napi);
2141 free_irq(hw->pdev->irq, hw);
2142 hw->flags &= ~SKY2_HW_IRQ_SETUP;
2146 /* Disable port IRQ */
2147 imask = sky2_read32(hw, B0_IMSK);
2148 imask &= ~portirq_msk[sky2->port];
2149 sky2_write32(hw, B0_IMSK, imask);
2150 sky2_read32(hw, B0_IMSK);
2152 synchronize_irq(hw->pdev->irq);
2153 napi_synchronize(&hw->napi);
2158 sky2_free_buffers(sky2);
2163 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
2165 if (hw->flags & SKY2_HW_FIBRE_PHY)
2168 if (!(hw->flags & SKY2_HW_GIGABIT)) {
2169 if (aux & PHY_M_PS_SPEED_100)
2175 switch (aux & PHY_M_PS_SPEED_MSK) {
2176 case PHY_M_PS_SPEED_1000:
2178 case PHY_M_PS_SPEED_100:
2185 static void sky2_link_up(struct sky2_port *sky2)
2187 struct sky2_hw *hw = sky2->hw;
2188 unsigned port = sky2->port;
2189 static const char *fc_name[] = {
2198 sky2_enable_rx_tx(sky2);
2200 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
2202 netif_carrier_on(sky2->netdev);
2204 mod_timer(&hw->watchdog_timer, jiffies + 1);
2206 /* Turn on link LED */
2207 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
2208 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
2210 netif_info(sky2, link, sky2->netdev,
2211 "Link is up at %d Mbps, %s duplex, flow control %s\n",
2213 sky2->duplex == DUPLEX_FULL ? "full" : "half",
2214 fc_name[sky2->flow_status]);
2217 static void sky2_link_down(struct sky2_port *sky2)
2219 struct sky2_hw *hw = sky2->hw;
2220 unsigned port = sky2->port;
2223 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
2225 reg = gma_read16(hw, port, GM_GP_CTRL);
2226 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
2227 gma_write16(hw, port, GM_GP_CTRL, reg);
2229 netif_carrier_off(sky2->netdev);
2231 /* Turn off link LED */
2232 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
2234 netif_info(sky2, link, sky2->netdev, "Link is down\n");
2236 sky2_phy_init(hw, port);
2239 static enum flow_control sky2_flow(int rx, int tx)
2242 return tx ? FC_BOTH : FC_RX;
2244 return tx ? FC_TX : FC_NONE;
2247 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
2249 struct sky2_hw *hw = sky2->hw;
2250 unsigned port = sky2->port;
2253 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
2254 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
2255 if (lpa & PHY_M_AN_RF) {
2256 netdev_err(sky2->netdev, "remote fault\n");
2260 if (!(aux & PHY_M_PS_SPDUP_RES)) {
2261 netdev_err(sky2->netdev, "speed/duplex mismatch\n");
2265 sky2->speed = sky2_phy_speed(hw, aux);
2266 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2268 /* Since the pause result bits seem to in different positions on
2269 * different chips. look at registers.
2271 if (hw->flags & SKY2_HW_FIBRE_PHY) {
2272 /* Shift for bits in fiber PHY */
2273 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
2274 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
2276 if (advert & ADVERTISE_1000XPAUSE)
2277 advert |= ADVERTISE_PAUSE_CAP;
2278 if (advert & ADVERTISE_1000XPSE_ASYM)
2279 advert |= ADVERTISE_PAUSE_ASYM;
2280 if (lpa & LPA_1000XPAUSE)
2281 lpa |= LPA_PAUSE_CAP;
2282 if (lpa & LPA_1000XPAUSE_ASYM)
2283 lpa |= LPA_PAUSE_ASYM;
2286 sky2->flow_status = FC_NONE;
2287 if (advert & ADVERTISE_PAUSE_CAP) {
2288 if (lpa & LPA_PAUSE_CAP)
2289 sky2->flow_status = FC_BOTH;
2290 else if (advert & ADVERTISE_PAUSE_ASYM)
2291 sky2->flow_status = FC_RX;
2292 } else if (advert & ADVERTISE_PAUSE_ASYM) {
2293 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
2294 sky2->flow_status = FC_TX;
2297 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000 &&
2298 !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
2299 sky2->flow_status = FC_NONE;
2301 if (sky2->flow_status & FC_TX)
2302 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2304 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2309 /* Interrupt from PHY */
2310 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
2312 struct net_device *dev = hw->dev[port];
2313 struct sky2_port *sky2 = netdev_priv(dev);
2314 u16 istatus, phystat;
2316 if (!netif_running(dev))
2319 spin_lock(&sky2->phy_lock);
2320 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2321 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2323 netif_info(sky2, intr, sky2->netdev, "phy interrupt status 0x%x 0x%x\n",
2326 if (istatus & PHY_M_IS_AN_COMPL) {
2327 if (sky2_autoneg_done(sky2, phystat) == 0 &&
2328 !netif_carrier_ok(dev))
2333 if (istatus & PHY_M_IS_LSP_CHANGE)
2334 sky2->speed = sky2_phy_speed(hw, phystat);
2336 if (istatus & PHY_M_IS_DUP_CHANGE)
2338 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2340 if (istatus & PHY_M_IS_LST_CHANGE) {
2341 if (phystat & PHY_M_PS_LINK_UP)
2344 sky2_link_down(sky2);
2347 spin_unlock(&sky2->phy_lock);
2350 /* Special quick link interrupt (Yukon-2 Optima only) */
2351 static void sky2_qlink_intr(struct sky2_hw *hw)
2353 struct sky2_port *sky2 = netdev_priv(hw->dev[0]);
2358 imask = sky2_read32(hw, B0_IMSK);
2359 imask &= ~Y2_IS_PHY_QLNK;
2360 sky2_write32(hw, B0_IMSK, imask);
2362 /* reset PHY Link Detect */
2363 phy = sky2_pci_read16(hw, PSM_CONFIG_REG4);
2364 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2365 sky2_pci_write16(hw, PSM_CONFIG_REG4, phy | 1);
2366 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2371 /* Transmit timeout is only called if we are running, carrier is up
2372 * and tx queue is full (stopped).
2374 static void sky2_tx_timeout(struct net_device *dev)
2376 struct sky2_port *sky2 = netdev_priv(dev);
2377 struct sky2_hw *hw = sky2->hw;
2379 netif_err(sky2, timer, dev, "tx timeout\n");
2381 netdev_printk(KERN_DEBUG, dev, "transmit ring %u .. %u report=%u done=%u\n",
2382 sky2->tx_cons, sky2->tx_prod,
2383 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
2384 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
2386 /* can't restart safely under softirq */
2387 schedule_work(&hw->restart_work);
2390 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
2392 struct sky2_port *sky2 = netdev_priv(dev);
2393 struct sky2_hw *hw = sky2->hw;
2394 unsigned port = sky2->port;
2399 /* MTU size outside the spec */
2400 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2403 /* MTU > 1500 on yukon FE and FE+ not allowed */
2404 if (new_mtu > ETH_DATA_LEN &&
2405 (hw->chip_id == CHIP_ID_YUKON_FE ||
2406 hw->chip_id == CHIP_ID_YUKON_FE_P))
2409 if (!netif_running(dev)) {
2411 netdev_update_features(dev);
2415 imask = sky2_read32(hw, B0_IMSK);
2416 sky2_write32(hw, B0_IMSK, 0);
2418 dev->trans_start = jiffies; /* prevent tx timeout */
2419 napi_disable(&hw->napi);
2420 netif_tx_disable(dev);
2422 synchronize_irq(hw->pdev->irq);
2424 if (!(hw->flags & SKY2_HW_RAM_BUFFER))
2425 sky2_set_tx_stfwd(hw, port);
2427 ctl = gma_read16(hw, port, GM_GP_CTRL);
2428 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2430 sky2_rx_clean(sky2);
2433 netdev_update_features(dev);
2435 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) | GM_SMOD_VLAN_ENA;
2436 if (sky2->speed > SPEED_100)
2437 mode |= IPG_DATA_VAL(IPG_DATA_DEF_1000);
2439 mode |= IPG_DATA_VAL(IPG_DATA_DEF_10_100);
2441 if (dev->mtu > ETH_DATA_LEN)
2442 mode |= GM_SMOD_JUMBO_ENA;
2444 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2446 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2448 err = sky2_alloc_rx_skbs(sky2);
2450 sky2_rx_start(sky2);
2452 sky2_rx_clean(sky2);
2453 sky2_write32(hw, B0_IMSK, imask);
2455 sky2_read32(hw, B0_Y2_SP_LISR);
2456 napi_enable(&hw->napi);
2461 gma_write16(hw, port, GM_GP_CTRL, ctl);
2463 netif_wake_queue(dev);
2469 static inline bool needs_copy(const struct rx_ring_info *re,
2472 #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
2473 /* Some architectures need the IP header to be aligned */
2474 if (!IS_ALIGNED(re->data_addr + ETH_HLEN, sizeof(u32)))
2477 return length < copybreak;
2480 /* For small just reuse existing skb for next receive */
2481 static struct sk_buff *receive_copy(struct sky2_port *sky2,
2482 const struct rx_ring_info *re,
2485 struct sk_buff *skb;
2487 skb = netdev_alloc_skb_ip_align(sky2->netdev, length);
2489 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2490 length, PCI_DMA_FROMDEVICE);
2491 skb_copy_from_linear_data(re->skb, skb->data, length);
2492 skb->ip_summed = re->skb->ip_summed;
2493 skb->csum = re->skb->csum;
2494 skb_copy_hash(skb, re->skb);
2495 skb->vlan_proto = re->skb->vlan_proto;
2496 skb->vlan_tci = re->skb->vlan_tci;
2498 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2499 length, PCI_DMA_FROMDEVICE);
2500 re->skb->vlan_proto = 0;
2501 re->skb->vlan_tci = 0;
2502 skb_clear_hash(re->skb);
2503 re->skb->ip_summed = CHECKSUM_NONE;
2504 skb_put(skb, length);
2509 /* Adjust length of skb with fragments to match received data */
2510 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2511 unsigned int length)
2516 /* put header into skb */
2517 size = min(length, hdr_space);
2522 num_frags = skb_shinfo(skb)->nr_frags;
2523 for (i = 0; i < num_frags; i++) {
2524 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2527 /* don't need this page */
2528 __skb_frag_unref(frag);
2529 --skb_shinfo(skb)->nr_frags;
2531 size = min(length, (unsigned) PAGE_SIZE);
2533 skb_frag_size_set(frag, size);
2534 skb->data_len += size;
2535 skb->truesize += PAGE_SIZE;
2542 /* Normal packet - take skb from ring element and put in a new one */
2543 static struct sk_buff *receive_new(struct sky2_port *sky2,
2544 struct rx_ring_info *re,
2545 unsigned int length)
2547 struct sk_buff *skb;
2548 struct rx_ring_info nre;
2549 unsigned hdr_space = sky2->rx_data_size;
2551 nre.skb = sky2_rx_alloc(sky2, GFP_ATOMIC);
2552 if (unlikely(!nre.skb))
2555 if (sky2_rx_map_skb(sky2->hw->pdev, &nre, hdr_space))
2559 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2560 prefetch(skb->data);
2563 if (skb_shinfo(skb)->nr_frags)
2564 skb_put_frags(skb, hdr_space, length);
2566 skb_put(skb, length);
2570 dev_kfree_skb(nre.skb);
2576 * Receive one packet.
2577 * For larger packets, get new buffer.
2579 static struct sk_buff *sky2_receive(struct net_device *dev,
2580 u16 length, u32 status)
2582 struct sky2_port *sky2 = netdev_priv(dev);
2583 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2584 struct sk_buff *skb = NULL;
2585 u16 count = (status & GMR_FS_LEN) >> 16;
2587 netif_printk(sky2, rx_status, KERN_DEBUG, dev,
2588 "rx slot %u status 0x%x len %d\n",
2589 sky2->rx_next, status, length);
2591 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2592 prefetch(sky2->rx_ring + sky2->rx_next);
2594 if (vlan_tx_tag_present(re->skb))
2595 count -= VLAN_HLEN; /* Account for vlan tag */
2597 /* This chip has hardware problems that generates bogus status.
2598 * So do only marginal checking and expect higher level protocols
2599 * to handle crap frames.
2601 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2602 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2606 if (status & GMR_FS_ANY_ERR)
2609 if (!(status & GMR_FS_RX_OK))
2612 /* if length reported by DMA does not match PHY, packet was truncated */
2613 if (length != count)
2617 if (needs_copy(re, length))
2618 skb = receive_copy(sky2, re, length);
2620 skb = receive_new(sky2, re, length);
2622 dev->stats.rx_dropped += (skb == NULL);
2625 sky2_rx_submit(sky2, re);
2630 ++dev->stats.rx_errors;
2632 if (net_ratelimit())
2633 netif_info(sky2, rx_err, dev,
2634 "rx error, status 0x%x length %d\n", status, length);
2639 /* Transmit complete */
2640 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2642 struct sky2_port *sky2 = netdev_priv(dev);
2644 if (netif_running(dev)) {
2645 sky2_tx_complete(sky2, last);
2647 /* Wake unless it's detached, and called e.g. from sky2_close() */
2648 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
2649 netif_wake_queue(dev);
2653 static inline void sky2_skb_rx(const struct sky2_port *sky2,
2654 struct sk_buff *skb)
2656 if (skb->ip_summed == CHECKSUM_NONE)
2657 netif_receive_skb(skb);
2659 napi_gro_receive(&sky2->hw->napi, skb);
2662 static inline void sky2_rx_done(struct sky2_hw *hw, unsigned port,
2663 unsigned packets, unsigned bytes)
2665 struct net_device *dev = hw->dev[port];
2666 struct sky2_port *sky2 = netdev_priv(dev);
2671 u64_stats_update_begin(&sky2->rx_stats.syncp);
2672 sky2->rx_stats.packets += packets;
2673 sky2->rx_stats.bytes += bytes;
2674 u64_stats_update_end(&sky2->rx_stats.syncp);
2676 dev->last_rx = jiffies;
2677 sky2_rx_update(netdev_priv(dev), rxqaddr[port]);
2680 static void sky2_rx_checksum(struct sky2_port *sky2, u32 status)
2682 /* If this happens then driver assuming wrong format for chip type */
2683 BUG_ON(sky2->hw->flags & SKY2_HW_NEW_LE);
2685 /* Both checksum counters are programmed to start at
2686 * the same offset, so unless there is a problem they
2687 * should match. This failure is an early indication that
2688 * hardware receive checksumming won't work.
2690 if (likely((u16)(status >> 16) == (u16)status)) {
2691 struct sk_buff *skb = sky2->rx_ring[sky2->rx_next].skb;
2692 skb->ip_summed = CHECKSUM_COMPLETE;
2693 skb->csum = le16_to_cpu(status);
2695 dev_notice(&sky2->hw->pdev->dev,
2696 "%s: receive checksum problem (status = %#x)\n",
2697 sky2->netdev->name, status);
2699 /* Disable checksum offload
2700 * It will be reenabled on next ndo_set_features, but if it's
2701 * really broken, will get disabled again
2703 sky2->netdev->features &= ~NETIF_F_RXCSUM;
2704 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2709 static void sky2_rx_tag(struct sky2_port *sky2, u16 length)
2711 struct sk_buff *skb;
2713 skb = sky2->rx_ring[sky2->rx_next].skb;
2714 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), be16_to_cpu(length));
2717 static void sky2_rx_hash(struct sky2_port *sky2, u32 status)
2719 struct sk_buff *skb;
2721 skb = sky2->rx_ring[sky2->rx_next].skb;
2722 skb_set_hash(skb, le32_to_cpu(status), PKT_HASH_TYPE_L3);
2725 /* Process status response ring */
2726 static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
2729 unsigned int total_bytes[2] = { 0 };
2730 unsigned int total_packets[2] = { 0 };
2737 struct sky2_port *sky2;
2738 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2740 struct net_device *dev;
2741 struct sk_buff *skb;
2744 u8 opcode = le->opcode;
2746 if (!(opcode & HW_OWNER))
2749 hw->st_idx = RING_NEXT(hw->st_idx, hw->st_size);
2751 port = le->css & CSS_LINK_BIT;
2752 dev = hw->dev[port];
2753 sky2 = netdev_priv(dev);
2754 length = le16_to_cpu(le->length);
2755 status = le32_to_cpu(le->status);
2758 switch (opcode & ~HW_OWNER) {
2760 total_packets[port]++;
2761 total_bytes[port] += length;
2763 skb = sky2_receive(dev, length, status);
2767 /* This chip reports checksum status differently */
2768 if (hw->flags & SKY2_HW_NEW_LE) {
2769 if ((dev->features & NETIF_F_RXCSUM) &&
2770 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2771 (le->css & CSS_TCPUDPCSOK))
2772 skb->ip_summed = CHECKSUM_UNNECESSARY;
2774 skb->ip_summed = CHECKSUM_NONE;
2777 skb->protocol = eth_type_trans(skb, dev);
2778 sky2_skb_rx(sky2, skb);
2780 /* Stop after net poll weight */
2781 if (++work_done >= to_do)
2786 sky2_rx_tag(sky2, length);
2790 sky2_rx_tag(sky2, length);
2793 if (likely(dev->features & NETIF_F_RXCSUM))
2794 sky2_rx_checksum(sky2, status);
2798 sky2_rx_hash(sky2, status);
2802 /* TX index reports status for both ports */
2803 sky2_tx_done(hw->dev[0], status & 0xfff);
2805 sky2_tx_done(hw->dev[1],
2806 ((status >> 24) & 0xff)
2807 | (u16)(length & 0xf) << 8);
2811 if (net_ratelimit())
2812 pr_warn("unknown status opcode 0x%x\n", opcode);
2814 } while (hw->st_idx != idx);
2816 /* Fully processed status ring so clear irq */
2817 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2820 sky2_rx_done(hw, 0, total_packets[0], total_bytes[0]);
2821 sky2_rx_done(hw, 1, total_packets[1], total_bytes[1]);
2826 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2828 struct net_device *dev = hw->dev[port];
2830 if (net_ratelimit())
2831 netdev_info(dev, "hw error interrupt status 0x%x\n", status);
2833 if (status & Y2_IS_PAR_RD1) {
2834 if (net_ratelimit())
2835 netdev_err(dev, "ram data read parity error\n");
2837 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2840 if (status & Y2_IS_PAR_WR1) {
2841 if (net_ratelimit())
2842 netdev_err(dev, "ram data write parity error\n");
2844 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2847 if (status & Y2_IS_PAR_MAC1) {
2848 if (net_ratelimit())
2849 netdev_err(dev, "MAC parity error\n");
2850 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2853 if (status & Y2_IS_PAR_RX1) {
2854 if (net_ratelimit())
2855 netdev_err(dev, "RX parity error\n");
2856 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2859 if (status & Y2_IS_TCP_TXA1) {
2860 if (net_ratelimit())
2861 netdev_err(dev, "TCP segmentation error\n");
2862 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2866 static void sky2_hw_intr(struct sky2_hw *hw)
2868 struct pci_dev *pdev = hw->pdev;
2869 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2870 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2874 if (status & Y2_IS_TIST_OV)
2875 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2877 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2880 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2881 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2882 if (net_ratelimit())
2883 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
2886 sky2_pci_write16(hw, PCI_STATUS,
2887 pci_err | PCI_STATUS_ERROR_BITS);
2888 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2891 if (status & Y2_IS_PCI_EXP) {
2892 /* PCI-Express uncorrectable Error occurred */
2895 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2896 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2897 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2899 if (net_ratelimit())
2900 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
2902 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2903 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2906 if (status & Y2_HWE_L1_MASK)
2907 sky2_hw_error(hw, 0, status);
2909 if (status & Y2_HWE_L1_MASK)
2910 sky2_hw_error(hw, 1, status);
2913 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2915 struct net_device *dev = hw->dev[port];
2916 struct sky2_port *sky2 = netdev_priv(dev);
2917 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2919 netif_info(sky2, intr, dev, "mac interrupt status 0x%x\n", status);
2921 if (status & GM_IS_RX_CO_OV)
2922 gma_read16(hw, port, GM_RX_IRQ_SRC);
2924 if (status & GM_IS_TX_CO_OV)
2925 gma_read16(hw, port, GM_TX_IRQ_SRC);
2927 if (status & GM_IS_RX_FF_OR) {
2928 ++dev->stats.rx_fifo_errors;
2929 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2932 if (status & GM_IS_TX_FF_UR) {
2933 ++dev->stats.tx_fifo_errors;
2934 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2938 /* This should never happen it is a bug. */
2939 static void sky2_le_error(struct sky2_hw *hw, unsigned port, u16 q)
2941 struct net_device *dev = hw->dev[port];
2942 u16 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2944 dev_err(&hw->pdev->dev, "%s: descriptor error q=%#x get=%u put=%u\n",
2945 dev->name, (unsigned) q, (unsigned) idx,
2946 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2948 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2951 static int sky2_rx_hung(struct net_device *dev)
2953 struct sky2_port *sky2 = netdev_priv(dev);
2954 struct sky2_hw *hw = sky2->hw;
2955 unsigned port = sky2->port;
2956 unsigned rxq = rxqaddr[port];
2957 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2958 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2959 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2960 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2962 /* If idle and MAC or PCI is stuck */
2963 if (sky2->check.last == dev->last_rx &&
2964 ((mac_rp == sky2->check.mac_rp &&
2965 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2966 /* Check if the PCI RX hang */
2967 (fifo_rp == sky2->check.fifo_rp &&
2968 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2969 netdev_printk(KERN_DEBUG, dev,
2970 "hung mac %d:%d fifo %d (%d:%d)\n",
2971 mac_lev, mac_rp, fifo_lev,
2972 fifo_rp, sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2975 sky2->check.last = dev->last_rx;
2976 sky2->check.mac_rp = mac_rp;
2977 sky2->check.mac_lev = mac_lev;
2978 sky2->check.fifo_rp = fifo_rp;
2979 sky2->check.fifo_lev = fifo_lev;
2984 static void sky2_watchdog(unsigned long arg)
2986 struct sky2_hw *hw = (struct sky2_hw *) arg;
2988 /* Check for lost IRQ once a second */
2989 if (sky2_read32(hw, B0_ISRC)) {
2990 napi_schedule(&hw->napi);
2994 for (i = 0; i < hw->ports; i++) {
2995 struct net_device *dev = hw->dev[i];
2996 if (!netif_running(dev))
3000 /* For chips with Rx FIFO, check if stuck */
3001 if ((hw->flags & SKY2_HW_RAM_BUFFER) &&
3002 sky2_rx_hung(dev)) {
3003 netdev_info(dev, "receiver hang detected\n");
3004 schedule_work(&hw->restart_work);
3013 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
3016 /* Hardware/software error handling */
3017 static void sky2_err_intr(struct sky2_hw *hw, u32 status)
3019 if (net_ratelimit())
3020 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
3022 if (status & Y2_IS_HW_ERR)
3025 if (status & Y2_IS_IRQ_MAC1)
3026 sky2_mac_intr(hw, 0);
3028 if (status & Y2_IS_IRQ_MAC2)
3029 sky2_mac_intr(hw, 1);
3031 if (status & Y2_IS_CHK_RX1)
3032 sky2_le_error(hw, 0, Q_R1);
3034 if (status & Y2_IS_CHK_RX2)
3035 sky2_le_error(hw, 1, Q_R2);
3037 if (status & Y2_IS_CHK_TXA1)
3038 sky2_le_error(hw, 0, Q_XA1);
3040 if (status & Y2_IS_CHK_TXA2)
3041 sky2_le_error(hw, 1, Q_XA2);
3044 static int sky2_poll(struct napi_struct *napi, int work_limit)
3046 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
3047 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
3051 if (unlikely(status & Y2_IS_ERROR))
3052 sky2_err_intr(hw, status);
3054 if (status & Y2_IS_IRQ_PHY1)
3055 sky2_phy_intr(hw, 0);
3057 if (status & Y2_IS_IRQ_PHY2)
3058 sky2_phy_intr(hw, 1);
3060 if (status & Y2_IS_PHY_QLNK)
3061 sky2_qlink_intr(hw);
3063 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
3064 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
3066 if (work_done >= work_limit)
3070 napi_complete(napi);
3071 sky2_read32(hw, B0_Y2_SP_LISR);
3077 static irqreturn_t sky2_intr(int irq, void *dev_id)
3079 struct sky2_hw *hw = dev_id;
3082 /* Reading this mask interrupts as side effect */
3083 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
3084 if (status == 0 || status == ~0) {
3085 sky2_write32(hw, B0_Y2_SP_ICR, 2);
3089 prefetch(&hw->st_le[hw->st_idx]);
3091 napi_schedule(&hw->napi);
3096 #ifdef CONFIG_NET_POLL_CONTROLLER
3097 static void sky2_netpoll(struct net_device *dev)
3099 struct sky2_port *sky2 = netdev_priv(dev);
3101 napi_schedule(&sky2->hw->napi);
3105 /* Chip internal frequency for clock calculations */
3106 static u32 sky2_mhz(const struct sky2_hw *hw)
3108 switch (hw->chip_id) {
3109 case CHIP_ID_YUKON_EC:
3110 case CHIP_ID_YUKON_EC_U:
3111 case CHIP_ID_YUKON_EX:
3112 case CHIP_ID_YUKON_SUPR:
3113 case CHIP_ID_YUKON_UL_2:
3114 case CHIP_ID_YUKON_OPT:
3115 case CHIP_ID_YUKON_PRM:
3116 case CHIP_ID_YUKON_OP_2:
3119 case CHIP_ID_YUKON_FE:
3122 case CHIP_ID_YUKON_FE_P:
3125 case CHIP_ID_YUKON_XL:
3133 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
3135 return sky2_mhz(hw) * us;
3138 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
3140 return clk / sky2_mhz(hw);
3144 static int sky2_init(struct sky2_hw *hw)
3148 /* Enable all clocks and check for bad PCI access */
3149 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
3151 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3153 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
3154 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
3156 switch (hw->chip_id) {
3157 case CHIP_ID_YUKON_XL:
3158 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
3159 if (hw->chip_rev < CHIP_REV_YU_XL_A2)
3160 hw->flags |= SKY2_HW_RSS_BROKEN;
3163 case CHIP_ID_YUKON_EC_U:
3164 hw->flags = SKY2_HW_GIGABIT
3166 | SKY2_HW_ADV_POWER_CTL;
3169 case CHIP_ID_YUKON_EX:
3170 hw->flags = SKY2_HW_GIGABIT
3173 | SKY2_HW_ADV_POWER_CTL
3174 | SKY2_HW_RSS_CHKSUM;
3176 /* New transmit checksum */
3177 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
3178 hw->flags |= SKY2_HW_AUTO_TX_SUM;
3181 case CHIP_ID_YUKON_EC:
3182 /* This rev is really old, and requires untested workarounds */
3183 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
3184 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
3187 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_RSS_BROKEN;
3190 case CHIP_ID_YUKON_FE:
3191 hw->flags = SKY2_HW_RSS_BROKEN;
3194 case CHIP_ID_YUKON_FE_P:
3195 hw->flags = SKY2_HW_NEWER_PHY
3197 | SKY2_HW_AUTO_TX_SUM
3198 | SKY2_HW_ADV_POWER_CTL;
3200 /* The workaround for status conflicts VLAN tag detection. */
3201 if (hw->chip_rev == CHIP_REV_YU_FE2_A0)
3202 hw->flags |= SKY2_HW_VLAN_BROKEN | SKY2_HW_RSS_CHKSUM;
3205 case CHIP_ID_YUKON_SUPR:
3206 hw->flags = SKY2_HW_GIGABIT
3209 | SKY2_HW_AUTO_TX_SUM
3210 | SKY2_HW_ADV_POWER_CTL;
3212 if (hw->chip_rev == CHIP_REV_YU_SU_A0)
3213 hw->flags |= SKY2_HW_RSS_CHKSUM;
3216 case CHIP_ID_YUKON_UL_2:
3217 hw->flags = SKY2_HW_GIGABIT
3218 | SKY2_HW_ADV_POWER_CTL;
3221 case CHIP_ID_YUKON_OPT:
3222 case CHIP_ID_YUKON_PRM:
3223 case CHIP_ID_YUKON_OP_2:
3224 hw->flags = SKY2_HW_GIGABIT
3226 | SKY2_HW_ADV_POWER_CTL;
3230 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
3235 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
3236 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
3237 hw->flags |= SKY2_HW_FIBRE_PHY;
3240 t8 = sky2_read8(hw, B2_Y2_HW_RES);
3241 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
3242 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
3246 if (sky2_read8(hw, B2_E_0))
3247 hw->flags |= SKY2_HW_RAM_BUFFER;
3252 static void sky2_reset(struct sky2_hw *hw)
3254 struct pci_dev *pdev = hw->pdev;
3257 u32 hwe_mask = Y2_HWE_ALL_MASK;
3260 if (hw->chip_id == CHIP_ID_YUKON_EX
3261 || hw->chip_id == CHIP_ID_YUKON_SUPR) {
3262 sky2_write32(hw, CPU_WDOG, 0);
3263 status = sky2_read16(hw, HCU_CCSR);
3264 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
3265 HCU_CCSR_UC_STATE_MSK);
3267 * CPU clock divider shouldn't be used because
3268 * - ASF firmware may malfunction
3269 * - Yukon-Supreme: Parallel FLASH doesn't support divided clocks
3271 status &= ~HCU_CCSR_CPU_CLK_DIVIDE_MSK;
3272 sky2_write16(hw, HCU_CCSR, status);
3273 sky2_write32(hw, CPU_WDOG, 0);
3275 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
3276 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
3279 sky2_write8(hw, B0_CTST, CS_RST_SET);
3280 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3282 /* allow writes to PCI config */
3283 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3285 /* clear PCI errors, if any */
3286 status = sky2_pci_read16(hw, PCI_STATUS);
3287 status |= PCI_STATUS_ERROR_BITS;
3288 sky2_pci_write16(hw, PCI_STATUS, status);
3290 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
3292 if (pci_is_pcie(pdev)) {
3293 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
3296 /* If error bit is stuck on ignore it */
3297 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
3298 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
3300 hwe_mask |= Y2_IS_PCI_EXP;
3304 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3306 for (i = 0; i < hw->ports; i++) {
3307 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
3308 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
3310 if (hw->chip_id == CHIP_ID_YUKON_EX ||
3311 hw->chip_id == CHIP_ID_YUKON_SUPR)
3312 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
3313 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
3318 if (hw->chip_id == CHIP_ID_YUKON_SUPR && hw->chip_rev > CHIP_REV_YU_SU_B0) {
3319 /* enable MACSec clock gating */
3320 sky2_pci_write32(hw, PCI_DEV_REG3, P_CLK_MACSEC_DIS);
3323 if (hw->chip_id == CHIP_ID_YUKON_OPT ||
3324 hw->chip_id == CHIP_ID_YUKON_PRM ||
3325 hw->chip_id == CHIP_ID_YUKON_OP_2) {
3328 if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
3329 /* disable PCI-E PHY power down (set PHY reg 0x80, bit 7 */
3330 sky2_write32(hw, Y2_PEX_PHY_DATA, (0x80UL << 16) | (1 << 7));
3332 /* set PHY Link Detect Timer to 1.1 second (11x 100ms) */
3335 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3336 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3338 /* set PHY Link Detect Timer to 0.4 second (4x 100ms) */
3342 reg <<= PSM_CONFIG_REG4_TIMER_PHY_LINK_DETECT_BASE;
3343 reg |= PSM_CONFIG_REG4_RST_PHY_LINK_DETECT;
3345 /* reset PHY Link Detect */
3346 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3347 sky2_pci_write16(hw, PSM_CONFIG_REG4, reg);
3349 /* check if PSMv2 was running before */
3350 reg = sky2_pci_read16(hw, PSM_CONFIG_REG3);
3351 if (reg & PCI_EXP_LNKCTL_ASPMC)
3352 /* restore the PCIe Link Control register */
3353 sky2_pci_write16(hw, pdev->pcie_cap + PCI_EXP_LNKCTL,
3356 if (hw->chip_id == CHIP_ID_YUKON_PRM &&
3357 hw->chip_rev == CHIP_REV_YU_PRM_A0) {
3358 /* change PHY Interrupt polarity to low active */
3359 reg = sky2_read16(hw, GPHY_CTRL);
3360 sky2_write16(hw, GPHY_CTRL, reg | GPC_INTPOL);
3362 /* adapt HW for low active PHY Interrupt */
3363 reg = sky2_read16(hw, Y2_CFG_SPC + PCI_LDO_CTRL);
3364 sky2_write16(hw, Y2_CFG_SPC + PCI_LDO_CTRL, reg | PHY_M_UNDOC1);
3367 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3369 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3370 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3373 /* Clear I2C IRQ noise */
3374 sky2_write32(hw, B2_I2C_IRQ, 1);
3376 /* turn off hardware timer (unused) */
3377 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
3378 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
3380 /* Turn off descriptor polling */
3381 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
3383 /* Turn off receive timestamp */
3384 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
3385 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
3387 /* enable the Tx Arbiters */
3388 for (i = 0; i < hw->ports; i++)
3389 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3391 /* Initialize ram interface */
3392 for (i = 0; i < hw->ports; i++) {
3393 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
3395 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
3396 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
3397 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
3398 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
3399 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
3400 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
3401 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
3402 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
3403 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
3404 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
3405 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
3406 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
3409 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
3411 for (i = 0; i < hw->ports; i++)
3412 sky2_gmac_reset(hw, i);
3414 memset(hw->st_le, 0, hw->st_size * sizeof(struct sky2_status_le));
3417 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
3418 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
3420 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
3421 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
3423 /* Set the list last index */
3424 sky2_write16(hw, STAT_LAST_IDX, hw->st_size - 1);
3426 sky2_write16(hw, STAT_TX_IDX_TH, 10);
3427 sky2_write8(hw, STAT_FIFO_WM, 16);
3429 /* set Status-FIFO ISR watermark */
3430 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
3431 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
3433 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
3435 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
3436 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
3437 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
3439 /* enable status unit */
3440 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
3442 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3443 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3444 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3447 /* Take device down (offline).
3448 * Equivalent to doing dev_stop() but this does not
3449 * inform upper layers of the transition.
3451 static void sky2_detach(struct net_device *dev)
3453 if (netif_running(dev)) {
3455 netif_device_detach(dev); /* stop txq */
3456 netif_tx_unlock(dev);
3461 /* Bring device back after doing sky2_detach */
3462 static int sky2_reattach(struct net_device *dev)
3466 if (netif_running(dev)) {
3467 err = sky2_open(dev);
3469 netdev_info(dev, "could not restart %d\n", err);
3472 netif_device_attach(dev);
3473 sky2_set_multicast(dev);
3480 static void sky2_all_down(struct sky2_hw *hw)
3484 if (hw->flags & SKY2_HW_IRQ_SETUP) {
3485 sky2_read32(hw, B0_IMSK);
3486 sky2_write32(hw, B0_IMSK, 0);
3488 synchronize_irq(hw->pdev->irq);
3489 napi_disable(&hw->napi);
3492 for (i = 0; i < hw->ports; i++) {
3493 struct net_device *dev = hw->dev[i];
3494 struct sky2_port *sky2 = netdev_priv(dev);
3496 if (!netif_running(dev))
3499 netif_carrier_off(dev);
3500 netif_tx_disable(dev);
3505 static void sky2_all_up(struct sky2_hw *hw)
3507 u32 imask = Y2_IS_BASE;
3510 for (i = 0; i < hw->ports; i++) {
3511 struct net_device *dev = hw->dev[i];
3512 struct sky2_port *sky2 = netdev_priv(dev);
3514 if (!netif_running(dev))
3518 sky2_set_multicast(dev);
3519 imask |= portirq_msk[i];
3520 netif_wake_queue(dev);
3523 if (hw->flags & SKY2_HW_IRQ_SETUP) {
3524 sky2_write32(hw, B0_IMSK, imask);
3525 sky2_read32(hw, B0_IMSK);
3526 sky2_read32(hw, B0_Y2_SP_LISR);
3527 napi_enable(&hw->napi);
3531 static void sky2_restart(struct work_struct *work)
3533 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
3544 static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
3546 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
3549 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3551 const struct sky2_port *sky2 = netdev_priv(dev);
3553 wol->supported = sky2_wol_supported(sky2->hw);
3554 wol->wolopts = sky2->wol;
3557 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3559 struct sky2_port *sky2 = netdev_priv(dev);
3560 struct sky2_hw *hw = sky2->hw;
3561 bool enable_wakeup = false;
3564 if ((wol->wolopts & ~sky2_wol_supported(sky2->hw)) ||
3565 !device_can_wakeup(&hw->pdev->dev))
3568 sky2->wol = wol->wolopts;
3570 for (i = 0; i < hw->ports; i++) {
3571 struct net_device *dev = hw->dev[i];
3572 struct sky2_port *sky2 = netdev_priv(dev);
3575 enable_wakeup = true;
3577 device_set_wakeup_enable(&hw->pdev->dev, enable_wakeup);
3582 static u32 sky2_supported_modes(const struct sky2_hw *hw)
3584 if (sky2_is_copper(hw)) {
3585 u32 modes = SUPPORTED_10baseT_Half
3586 | SUPPORTED_10baseT_Full
3587 | SUPPORTED_100baseT_Half
3588 | SUPPORTED_100baseT_Full;
3590 if (hw->flags & SKY2_HW_GIGABIT)
3591 modes |= SUPPORTED_1000baseT_Half
3592 | SUPPORTED_1000baseT_Full;
3595 return SUPPORTED_1000baseT_Half
3596 | SUPPORTED_1000baseT_Full;
3599 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3601 struct sky2_port *sky2 = netdev_priv(dev);
3602 struct sky2_hw *hw = sky2->hw;
3604 ecmd->transceiver = XCVR_INTERNAL;
3605 ecmd->supported = sky2_supported_modes(hw);
3606 ecmd->phy_address = PHY_ADDR_MARV;
3607 if (sky2_is_copper(hw)) {
3608 ecmd->port = PORT_TP;
3609 ethtool_cmd_speed_set(ecmd, sky2->speed);
3610 ecmd->supported |= SUPPORTED_Autoneg | SUPPORTED_TP;
3612 ethtool_cmd_speed_set(ecmd, SPEED_1000);
3613 ecmd->port = PORT_FIBRE;
3614 ecmd->supported |= SUPPORTED_Autoneg | SUPPORTED_FIBRE;
3617 ecmd->advertising = sky2->advertising;
3618 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_SPEED)
3619 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3620 ecmd->duplex = sky2->duplex;
3624 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3626 struct sky2_port *sky2 = netdev_priv(dev);
3627 const struct sky2_hw *hw = sky2->hw;
3628 u32 supported = sky2_supported_modes(hw);
3630 if (ecmd->autoneg == AUTONEG_ENABLE) {
3631 if (ecmd->advertising & ~supported)
3634 if (sky2_is_copper(hw))
3635 sky2->advertising = ecmd->advertising |
3639 sky2->advertising = ecmd->advertising |
3643 sky2->flags |= SKY2_FLAG_AUTO_SPEED;
3648 u32 speed = ethtool_cmd_speed(ecmd);
3652 if (ecmd->duplex == DUPLEX_FULL)
3653 setting = SUPPORTED_1000baseT_Full;
3654 else if (ecmd->duplex == DUPLEX_HALF)
3655 setting = SUPPORTED_1000baseT_Half;
3660 if (ecmd->duplex == DUPLEX_FULL)
3661 setting = SUPPORTED_100baseT_Full;
3662 else if (ecmd->duplex == DUPLEX_HALF)
3663 setting = SUPPORTED_100baseT_Half;
3669 if (ecmd->duplex == DUPLEX_FULL)
3670 setting = SUPPORTED_10baseT_Full;
3671 else if (ecmd->duplex == DUPLEX_HALF)
3672 setting = SUPPORTED_10baseT_Half;
3680 if ((setting & supported) == 0)
3683 sky2->speed = speed;
3684 sky2->duplex = ecmd->duplex;
3685 sky2->flags &= ~SKY2_FLAG_AUTO_SPEED;
3688 if (netif_running(dev)) {
3689 sky2_phy_reinit(sky2);
3690 sky2_set_multicast(dev);
3696 static void sky2_get_drvinfo(struct net_device *dev,
3697 struct ethtool_drvinfo *info)
3699 struct sky2_port *sky2 = netdev_priv(dev);
3701 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
3702 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
3703 strlcpy(info->bus_info, pci_name(sky2->hw->pdev),
3704 sizeof(info->bus_info));
3707 static const struct sky2_stat {
3708 char name[ETH_GSTRING_LEN];
3711 { "tx_bytes", GM_TXO_OK_HI },
3712 { "rx_bytes", GM_RXO_OK_HI },
3713 { "tx_broadcast", GM_TXF_BC_OK },
3714 { "rx_broadcast", GM_RXF_BC_OK },
3715 { "tx_multicast", GM_TXF_MC_OK },
3716 { "rx_multicast", GM_RXF_MC_OK },
3717 { "tx_unicast", GM_TXF_UC_OK },
3718 { "rx_unicast", GM_RXF_UC_OK },
3719 { "tx_mac_pause", GM_TXF_MPAUSE },
3720 { "rx_mac_pause", GM_RXF_MPAUSE },
3721 { "collisions", GM_TXF_COL },
3722 { "late_collision",GM_TXF_LAT_COL },
3723 { "aborted", GM_TXF_ABO_COL },
3724 { "single_collisions", GM_TXF_SNG_COL },
3725 { "multi_collisions", GM_TXF_MUL_COL },
3727 { "rx_short", GM_RXF_SHT },
3728 { "rx_runt", GM_RXE_FRAG },
3729 { "rx_64_byte_packets", GM_RXF_64B },
3730 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3731 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3732 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3733 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3734 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3735 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3736 { "rx_too_long", GM_RXF_LNG_ERR },
3737 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3738 { "rx_jabber", GM_RXF_JAB_PKT },
3739 { "rx_fcs_error", GM_RXF_FCS_ERR },
3741 { "tx_64_byte_packets", GM_TXF_64B },
3742 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3743 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3744 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3745 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3746 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3747 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3748 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3751 static u32 sky2_get_msglevel(struct net_device *netdev)
3753 struct sky2_port *sky2 = netdev_priv(netdev);
3754 return sky2->msg_enable;
3757 static int sky2_nway_reset(struct net_device *dev)
3759 struct sky2_port *sky2 = netdev_priv(dev);
3761 if (!netif_running(dev) || !(sky2->flags & SKY2_FLAG_AUTO_SPEED))
3764 sky2_phy_reinit(sky2);
3765 sky2_set_multicast(dev);
3770 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3772 struct sky2_hw *hw = sky2->hw;
3773 unsigned port = sky2->port;
3776 data[0] = get_stats64(hw, port, GM_TXO_OK_LO);
3777 data[1] = get_stats64(hw, port, GM_RXO_OK_LO);
3779 for (i = 2; i < count; i++)
3780 data[i] = get_stats32(hw, port, sky2_stats[i].offset);
3783 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3785 struct sky2_port *sky2 = netdev_priv(netdev);
3786 sky2->msg_enable = value;
3789 static int sky2_get_sset_count(struct net_device *dev, int sset)
3793 return ARRAY_SIZE(sky2_stats);
3799 static void sky2_get_ethtool_stats(struct net_device *dev,
3800 struct ethtool_stats *stats, u64 * data)
3802 struct sky2_port *sky2 = netdev_priv(dev);
3804 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3807 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3811 switch (stringset) {
3813 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3814 memcpy(data + i * ETH_GSTRING_LEN,
3815 sky2_stats[i].name, ETH_GSTRING_LEN);
3820 static int sky2_set_mac_address(struct net_device *dev, void *p)
3822 struct sky2_port *sky2 = netdev_priv(dev);
3823 struct sky2_hw *hw = sky2->hw;
3824 unsigned port = sky2->port;
3825 const struct sockaddr *addr = p;
3827 if (!is_valid_ether_addr(addr->sa_data))
3828 return -EADDRNOTAVAIL;
3830 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3831 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3832 dev->dev_addr, ETH_ALEN);
3833 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3834 dev->dev_addr, ETH_ALEN);
3836 /* virtual address for data */
3837 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3839 /* physical address: used for pause frames */
3840 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3845 static inline void sky2_add_filter(u8 filter[8], const u8 *addr)
3849 bit = ether_crc(ETH_ALEN, addr) & 63;
3850 filter[bit >> 3] |= 1 << (bit & 7);
3853 static void sky2_set_multicast(struct net_device *dev)
3855 struct sky2_port *sky2 = netdev_priv(dev);
3856 struct sky2_hw *hw = sky2->hw;
3857 unsigned port = sky2->port;
3858 struct netdev_hw_addr *ha;
3862 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3864 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3865 memset(filter, 0, sizeof(filter));
3867 reg = gma_read16(hw, port, GM_RX_CTRL);
3868 reg |= GM_RXCR_UCF_ENA;
3870 if (dev->flags & IFF_PROMISC) /* promiscuous */
3871 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3872 else if (dev->flags & IFF_ALLMULTI)
3873 memset(filter, 0xff, sizeof(filter));
3874 else if (netdev_mc_empty(dev) && !rx_pause)
3875 reg &= ~GM_RXCR_MCF_ENA;
3877 reg |= GM_RXCR_MCF_ENA;
3880 sky2_add_filter(filter, pause_mc_addr);
3882 netdev_for_each_mc_addr(ha, dev)
3883 sky2_add_filter(filter, ha->addr);
3886 gma_write16(hw, port, GM_MC_ADDR_H1,
3887 (u16) filter[0] | ((u16) filter[1] << 8));
3888 gma_write16(hw, port, GM_MC_ADDR_H2,
3889 (u16) filter[2] | ((u16) filter[3] << 8));
3890 gma_write16(hw, port, GM_MC_ADDR_H3,
3891 (u16) filter[4] | ((u16) filter[5] << 8));
3892 gma_write16(hw, port, GM_MC_ADDR_H4,
3893 (u16) filter[6] | ((u16) filter[7] << 8));
3895 gma_write16(hw, port, GM_RX_CTRL, reg);
3898 static struct rtnl_link_stats64 *sky2_get_stats(struct net_device *dev,
3899 struct rtnl_link_stats64 *stats)
3901 struct sky2_port *sky2 = netdev_priv(dev);
3902 struct sky2_hw *hw = sky2->hw;
3903 unsigned port = sky2->port;
3905 u64 _bytes, _packets;
3908 start = u64_stats_fetch_begin_irq(&sky2->rx_stats.syncp);
3909 _bytes = sky2->rx_stats.bytes;
3910 _packets = sky2->rx_stats.packets;
3911 } while (u64_stats_fetch_retry_irq(&sky2->rx_stats.syncp, start));
3913 stats->rx_packets = _packets;
3914 stats->rx_bytes = _bytes;
3917 start = u64_stats_fetch_begin_irq(&sky2->tx_stats.syncp);
3918 _bytes = sky2->tx_stats.bytes;
3919 _packets = sky2->tx_stats.packets;
3920 } while (u64_stats_fetch_retry_irq(&sky2->tx_stats.syncp, start));
3922 stats->tx_packets = _packets;
3923 stats->tx_bytes = _bytes;
3925 stats->multicast = get_stats32(hw, port, GM_RXF_MC_OK)
3926 + get_stats32(hw, port, GM_RXF_BC_OK);
3928 stats->collisions = get_stats32(hw, port, GM_TXF_COL);
3930 stats->rx_length_errors = get_stats32(hw, port, GM_RXF_LNG_ERR);
3931 stats->rx_crc_errors = get_stats32(hw, port, GM_RXF_FCS_ERR);
3932 stats->rx_frame_errors = get_stats32(hw, port, GM_RXF_SHT)
3933 + get_stats32(hw, port, GM_RXE_FRAG);
3934 stats->rx_over_errors = get_stats32(hw, port, GM_RXE_FIFO_OV);
3936 stats->rx_dropped = dev->stats.rx_dropped;
3937 stats->rx_fifo_errors = dev->stats.rx_fifo_errors;
3938 stats->tx_fifo_errors = dev->stats.tx_fifo_errors;
3943 /* Can have one global because blinking is controlled by
3944 * ethtool and that is always under RTNL mutex
3946 static void sky2_led(struct sky2_port *sky2, enum led_mode mode)
3948 struct sky2_hw *hw = sky2->hw;
3949 unsigned port = sky2->port;
3951 spin_lock_bh(&sky2->phy_lock);
3952 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3953 hw->chip_id == CHIP_ID_YUKON_EX ||
3954 hw->chip_id == CHIP_ID_YUKON_SUPR) {
3956 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3957 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3961 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3962 PHY_M_LEDC_LOS_CTRL(8) |
3963 PHY_M_LEDC_INIT_CTRL(8) |
3964 PHY_M_LEDC_STA1_CTRL(8) |
3965 PHY_M_LEDC_STA0_CTRL(8));
3968 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3969 PHY_M_LEDC_LOS_CTRL(9) |
3970 PHY_M_LEDC_INIT_CTRL(9) |
3971 PHY_M_LEDC_STA1_CTRL(9) |
3972 PHY_M_LEDC_STA0_CTRL(9));
3975 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3976 PHY_M_LEDC_LOS_CTRL(0xa) |
3977 PHY_M_LEDC_INIT_CTRL(0xa) |
3978 PHY_M_LEDC_STA1_CTRL(0xa) |
3979 PHY_M_LEDC_STA0_CTRL(0xa));
3982 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3983 PHY_M_LEDC_LOS_CTRL(1) |
3984 PHY_M_LEDC_INIT_CTRL(8) |
3985 PHY_M_LEDC_STA1_CTRL(7) |
3986 PHY_M_LEDC_STA0_CTRL(7));
3989 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3991 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3992 PHY_M_LED_MO_DUP(mode) |
3993 PHY_M_LED_MO_10(mode) |
3994 PHY_M_LED_MO_100(mode) |
3995 PHY_M_LED_MO_1000(mode) |
3996 PHY_M_LED_MO_RX(mode) |
3997 PHY_M_LED_MO_TX(mode));
3999 spin_unlock_bh(&sky2->phy_lock);
4002 /* blink LED's for finding board */
4003 static int sky2_set_phys_id(struct net_device *dev,
4004 enum ethtool_phys_id_state state)
4006 struct sky2_port *sky2 = netdev_priv(dev);
4009 case ETHTOOL_ID_ACTIVE:
4010 return 1; /* cycle on/off once per second */
4011 case ETHTOOL_ID_INACTIVE:
4012 sky2_led(sky2, MO_LED_NORM);
4015 sky2_led(sky2, MO_LED_ON);
4017 case ETHTOOL_ID_OFF:
4018 sky2_led(sky2, MO_LED_OFF);
4025 static void sky2_get_pauseparam(struct net_device *dev,
4026 struct ethtool_pauseparam *ecmd)
4028 struct sky2_port *sky2 = netdev_priv(dev);
4030 switch (sky2->flow_mode) {
4032 ecmd->tx_pause = ecmd->rx_pause = 0;
4035 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
4038 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
4041 ecmd->tx_pause = ecmd->rx_pause = 1;
4044 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_PAUSE)
4045 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
4048 static int sky2_set_pauseparam(struct net_device *dev,
4049 struct ethtool_pauseparam *ecmd)
4051 struct sky2_port *sky2 = netdev_priv(dev);
4053 if (ecmd->autoneg == AUTONEG_ENABLE)
4054 sky2->flags |= SKY2_FLAG_AUTO_PAUSE;
4056 sky2->flags &= ~SKY2_FLAG_AUTO_PAUSE;
4058 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
4060 if (netif_running(dev))
4061 sky2_phy_reinit(sky2);
4066 static int sky2_get_coalesce(struct net_device *dev,
4067 struct ethtool_coalesce *ecmd)
4069 struct sky2_port *sky2 = netdev_priv(dev);
4070 struct sky2_hw *hw = sky2->hw;
4072 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
4073 ecmd->tx_coalesce_usecs = 0;
4075 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
4076 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
4078 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
4080 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
4081 ecmd->rx_coalesce_usecs = 0;
4083 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
4084 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
4086 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
4088 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
4089 ecmd->rx_coalesce_usecs_irq = 0;
4091 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
4092 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
4095 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
4100 /* Note: this affect both ports */
4101 static int sky2_set_coalesce(struct net_device *dev,
4102 struct ethtool_coalesce *ecmd)
4104 struct sky2_port *sky2 = netdev_priv(dev);
4105 struct sky2_hw *hw = sky2->hw;
4106 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
4108 if (ecmd->tx_coalesce_usecs > tmax ||
4109 ecmd->rx_coalesce_usecs > tmax ||
4110 ecmd->rx_coalesce_usecs_irq > tmax)
4113 if (ecmd->tx_max_coalesced_frames >= sky2->tx_ring_size-1)
4115 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
4117 if (ecmd->rx_max_coalesced_frames_irq > RX_MAX_PENDING)
4120 if (ecmd->tx_coalesce_usecs == 0)
4121 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
4123 sky2_write32(hw, STAT_TX_TIMER_INI,
4124 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
4125 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
4127 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
4129 if (ecmd->rx_coalesce_usecs == 0)
4130 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
4132 sky2_write32(hw, STAT_LEV_TIMER_INI,
4133 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
4134 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
4136 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
4138 if (ecmd->rx_coalesce_usecs_irq == 0)
4139 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
4141 sky2_write32(hw, STAT_ISR_TIMER_INI,
4142 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
4143 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
4145 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
4150 * Hardware is limited to min of 128 and max of 2048 for ring size
4151 * and rounded up to next power of two
4152 * to avoid division in modulus calclation
4154 static unsigned long roundup_ring_size(unsigned long pending)
4156 return max(128ul, roundup_pow_of_two(pending+1));
4159 static void sky2_get_ringparam(struct net_device *dev,
4160 struct ethtool_ringparam *ering)
4162 struct sky2_port *sky2 = netdev_priv(dev);
4164 ering->rx_max_pending = RX_MAX_PENDING;
4165 ering->tx_max_pending = TX_MAX_PENDING;
4167 ering->rx_pending = sky2->rx_pending;
4168 ering->tx_pending = sky2->tx_pending;
4171 static int sky2_set_ringparam(struct net_device *dev,
4172 struct ethtool_ringparam *ering)
4174 struct sky2_port *sky2 = netdev_priv(dev);
4176 if (ering->rx_pending > RX_MAX_PENDING ||
4177 ering->rx_pending < 8 ||
4178 ering->tx_pending < TX_MIN_PENDING ||
4179 ering->tx_pending > TX_MAX_PENDING)
4184 sky2->rx_pending = ering->rx_pending;
4185 sky2->tx_pending = ering->tx_pending;
4186 sky2->tx_ring_size = roundup_ring_size(sky2->tx_pending);
4188 return sky2_reattach(dev);
4191 static int sky2_get_regs_len(struct net_device *dev)
4196 static int sky2_reg_access_ok(struct sky2_hw *hw, unsigned int b)
4198 /* This complicated switch statement is to make sure and
4199 * only access regions that are unreserved.
4200 * Some blocks are only valid on dual port cards.
4204 case 5: /* Tx Arbiter 2 */
4206 case 14 ... 15: /* TX2 */
4207 case 17: case 19: /* Ram Buffer 2 */
4208 case 22 ... 23: /* Tx Ram Buffer 2 */
4209 case 25: /* Rx MAC Fifo 1 */
4210 case 27: /* Tx MAC Fifo 2 */
4211 case 31: /* GPHY 2 */
4212 case 40 ... 47: /* Pattern Ram 2 */
4213 case 52: case 54: /* TCP Segmentation 2 */
4214 case 112 ... 116: /* GMAC 2 */
4215 return hw->ports > 1;
4217 case 0: /* Control */
4218 case 2: /* Mac address */
4219 case 4: /* Tx Arbiter 1 */
4220 case 7: /* PCI express reg */
4222 case 12 ... 13: /* TX1 */
4223 case 16: case 18:/* Rx Ram Buffer 1 */
4224 case 20 ... 21: /* Tx Ram Buffer 1 */
4225 case 24: /* Rx MAC Fifo 1 */
4226 case 26: /* Tx MAC Fifo 1 */
4227 case 28 ... 29: /* Descriptor and status unit */
4228 case 30: /* GPHY 1*/
4229 case 32 ... 39: /* Pattern Ram 1 */
4230 case 48: case 50: /* TCP Segmentation 1 */
4231 case 56 ... 60: /* PCI space */
4232 case 80 ... 84: /* GMAC 1 */
4241 * Returns copy of control register region
4242 * Note: ethtool_get_regs always provides full size (16k) buffer
4244 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
4247 const struct sky2_port *sky2 = netdev_priv(dev);
4248 const void __iomem *io = sky2->hw->regs;
4253 for (b = 0; b < 128; b++) {
4254 /* skip poisonous diagnostic ram region in block 3 */
4256 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
4257 else if (sky2_reg_access_ok(sky2->hw, b))
4258 memcpy_fromio(p, io, 128);
4267 static int sky2_get_eeprom_len(struct net_device *dev)
4269 struct sky2_port *sky2 = netdev_priv(dev);
4270 struct sky2_hw *hw = sky2->hw;
4273 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4274 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4277 static int sky2_vpd_wait(const struct sky2_hw *hw, int cap, u16 busy)
4279 unsigned long start = jiffies;
4281 while ( (sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F) == busy) {
4282 /* Can take up to 10.6 ms for write */
4283 if (time_after(jiffies, start + HZ/4)) {
4284 dev_err(&hw->pdev->dev, "VPD cycle timed out\n");
4293 static int sky2_vpd_read(struct sky2_hw *hw, int cap, void *data,
4294 u16 offset, size_t length)
4298 while (length > 0) {
4301 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
4302 rc = sky2_vpd_wait(hw, cap, 0);
4306 val = sky2_pci_read32(hw, cap + PCI_VPD_DATA);
4308 memcpy(data, &val, min(sizeof(val), length));
4309 offset += sizeof(u32);
4310 data += sizeof(u32);
4311 length -= sizeof(u32);
4317 static int sky2_vpd_write(struct sky2_hw *hw, int cap, const void *data,
4318 u16 offset, unsigned int length)
4323 for (i = 0; i < length; i += sizeof(u32)) {
4324 u32 val = *(u32 *)(data + i);
4326 sky2_pci_write32(hw, cap + PCI_VPD_DATA, val);
4327 sky2_pci_write32(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
4329 rc = sky2_vpd_wait(hw, cap, PCI_VPD_ADDR_F);
4336 static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4339 struct sky2_port *sky2 = netdev_priv(dev);
4340 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4345 eeprom->magic = SKY2_EEPROM_MAGIC;
4347 return sky2_vpd_read(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4350 static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4353 struct sky2_port *sky2 = netdev_priv(dev);
4354 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4359 if (eeprom->magic != SKY2_EEPROM_MAGIC)
4362 /* Partial writes not supported */
4363 if ((eeprom->offset & 3) || (eeprom->len & 3))
4366 return sky2_vpd_write(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4369 static netdev_features_t sky2_fix_features(struct net_device *dev,
4370 netdev_features_t features)
4372 const struct sky2_port *sky2 = netdev_priv(dev);
4373 const struct sky2_hw *hw = sky2->hw;
4375 /* In order to do Jumbo packets on these chips, need to turn off the
4376 * transmit store/forward. Therefore checksum offload won't work.
4378 if (dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U) {
4379 netdev_info(dev, "checksum offload not possible with jumbo frames\n");
4380 features &= ~(NETIF_F_TSO|NETIF_F_SG|NETIF_F_ALL_CSUM);
4383 /* Some hardware requires receive checksum for RSS to work. */
4384 if ( (features & NETIF_F_RXHASH) &&
4385 !(features & NETIF_F_RXCSUM) &&
4386 (sky2->hw->flags & SKY2_HW_RSS_CHKSUM)) {
4387 netdev_info(dev, "receive hashing forces receive checksum\n");
4388 features |= NETIF_F_RXCSUM;
4394 static int sky2_set_features(struct net_device *dev, netdev_features_t features)
4396 struct sky2_port *sky2 = netdev_priv(dev);
4397 netdev_features_t changed = dev->features ^ features;
4399 if ((changed & NETIF_F_RXCSUM) &&
4400 !(sky2->hw->flags & SKY2_HW_NEW_LE)) {
4401 sky2_write32(sky2->hw,
4402 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
4403 (features & NETIF_F_RXCSUM)
4404 ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
4407 if (changed & NETIF_F_RXHASH)
4408 rx_set_rss(dev, features);
4410 if (changed & (NETIF_F_HW_VLAN_CTAG_TX|NETIF_F_HW_VLAN_CTAG_RX))
4411 sky2_vlan_mode(dev, features);
4416 static const struct ethtool_ops sky2_ethtool_ops = {
4417 .get_settings = sky2_get_settings,
4418 .set_settings = sky2_set_settings,
4419 .get_drvinfo = sky2_get_drvinfo,
4420 .get_wol = sky2_get_wol,
4421 .set_wol = sky2_set_wol,
4422 .get_msglevel = sky2_get_msglevel,
4423 .set_msglevel = sky2_set_msglevel,
4424 .nway_reset = sky2_nway_reset,
4425 .get_regs_len = sky2_get_regs_len,
4426 .get_regs = sky2_get_regs,
4427 .get_link = ethtool_op_get_link,
4428 .get_eeprom_len = sky2_get_eeprom_len,
4429 .get_eeprom = sky2_get_eeprom,
4430 .set_eeprom = sky2_set_eeprom,
4431 .get_strings = sky2_get_strings,
4432 .get_coalesce = sky2_get_coalesce,
4433 .set_coalesce = sky2_set_coalesce,
4434 .get_ringparam = sky2_get_ringparam,
4435 .set_ringparam = sky2_set_ringparam,
4436 .get_pauseparam = sky2_get_pauseparam,
4437 .set_pauseparam = sky2_set_pauseparam,
4438 .set_phys_id = sky2_set_phys_id,
4439 .get_sset_count = sky2_get_sset_count,
4440 .get_ethtool_stats = sky2_get_ethtool_stats,
4443 #ifdef CONFIG_SKY2_DEBUG
4445 static struct dentry *sky2_debug;
4449 * Read and parse the first part of Vital Product Data
4451 #define VPD_SIZE 128
4452 #define VPD_MAGIC 0x82
4454 static const struct vpd_tag {
4458 { "PN", "Part Number" },
4459 { "EC", "Engineering Level" },
4460 { "MN", "Manufacturer" },
4461 { "SN", "Serial Number" },
4462 { "YA", "Asset Tag" },
4463 { "VL", "First Error Log Message" },
4464 { "VF", "Second Error Log Message" },
4465 { "VB", "Boot Agent ROM Configuration" },
4466 { "VE", "EFI UNDI Configuration" },
4469 static void sky2_show_vpd(struct seq_file *seq, struct sky2_hw *hw)
4477 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4478 vpd_size = 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4480 seq_printf(seq, "%s Product Data\n", pci_name(hw->pdev));
4481 buf = kmalloc(vpd_size, GFP_KERNEL);
4483 seq_puts(seq, "no memory!\n");
4487 if (pci_read_vpd(hw->pdev, 0, vpd_size, buf) < 0) {
4488 seq_puts(seq, "VPD read failed\n");
4492 if (buf[0] != VPD_MAGIC) {
4493 seq_printf(seq, "VPD tag mismatch: %#x\n", buf[0]);
4497 if (len == 0 || len > vpd_size - 4) {
4498 seq_printf(seq, "Invalid id length: %d\n", len);
4502 seq_printf(seq, "%.*s\n", len, buf + 3);
4505 while (offs < vpd_size - 4) {
4508 if (!memcmp("RW", buf + offs, 2)) /* end marker */
4510 len = buf[offs + 2];
4511 if (offs + len + 3 >= vpd_size)
4514 for (i = 0; i < ARRAY_SIZE(vpd_tags); i++) {
4515 if (!memcmp(vpd_tags[i].tag, buf + offs, 2)) {
4516 seq_printf(seq, " %s: %.*s\n",
4517 vpd_tags[i].label, len, buf + offs + 3);
4527 static int sky2_debug_show(struct seq_file *seq, void *v)
4529 struct net_device *dev = seq->private;
4530 const struct sky2_port *sky2 = netdev_priv(dev);
4531 struct sky2_hw *hw = sky2->hw;
4532 unsigned port = sky2->port;
4536 sky2_show_vpd(seq, hw);
4538 seq_printf(seq, "\nIRQ src=%x mask=%x control=%x\n",
4539 sky2_read32(hw, B0_ISRC),
4540 sky2_read32(hw, B0_IMSK),
4541 sky2_read32(hw, B0_Y2_SP_ICR));
4543 if (!netif_running(dev)) {
4544 seq_printf(seq, "network not running\n");
4548 napi_disable(&hw->napi);
4549 last = sky2_read16(hw, STAT_PUT_IDX);
4551 seq_printf(seq, "Status ring %u\n", hw->st_size);
4552 if (hw->st_idx == last)
4553 seq_puts(seq, "Status ring (empty)\n");
4555 seq_puts(seq, "Status ring\n");
4556 for (idx = hw->st_idx; idx != last && idx < hw->st_size;
4557 idx = RING_NEXT(idx, hw->st_size)) {
4558 const struct sky2_status_le *le = hw->st_le + idx;
4559 seq_printf(seq, "[%d] %#x %d %#x\n",
4560 idx, le->opcode, le->length, le->status);
4562 seq_puts(seq, "\n");
4565 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
4566 sky2->tx_cons, sky2->tx_prod,
4567 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
4568 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
4570 /* Dump contents of tx ring */
4572 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < sky2->tx_ring_size;
4573 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
4574 const struct sky2_tx_le *le = sky2->tx_le + idx;
4575 u32 a = le32_to_cpu(le->addr);
4578 seq_printf(seq, "%u:", idx);
4581 switch (le->opcode & ~HW_OWNER) {
4583 seq_printf(seq, " %#x:", a);
4586 seq_printf(seq, " mtu=%d", a);
4589 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
4592 seq_printf(seq, " csum=%#x", a);
4595 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
4598 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
4601 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
4604 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
4605 a, le16_to_cpu(le->length));
4608 if (le->ctrl & EOP) {
4609 seq_putc(seq, '\n');
4614 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
4615 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
4616 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
4617 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
4619 sky2_read32(hw, B0_Y2_SP_LISR);
4620 napi_enable(&hw->napi);
4624 static int sky2_debug_open(struct inode *inode, struct file *file)
4626 return single_open(file, sky2_debug_show, inode->i_private);
4629 static const struct file_operations sky2_debug_fops = {
4630 .owner = THIS_MODULE,
4631 .open = sky2_debug_open,
4633 .llseek = seq_lseek,
4634 .release = single_release,
4638 * Use network device events to create/remove/rename
4639 * debugfs file entries
4641 static int sky2_device_event(struct notifier_block *unused,
4642 unsigned long event, void *ptr)
4644 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
4645 struct sky2_port *sky2 = netdev_priv(dev);
4647 if (dev->netdev_ops->ndo_open != sky2_open || !sky2_debug)
4651 case NETDEV_CHANGENAME:
4652 if (sky2->debugfs) {
4653 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
4654 sky2_debug, dev->name);
4658 case NETDEV_GOING_DOWN:
4659 if (sky2->debugfs) {
4660 netdev_printk(KERN_DEBUG, dev, "remove debugfs\n");
4661 debugfs_remove(sky2->debugfs);
4662 sky2->debugfs = NULL;
4667 sky2->debugfs = debugfs_create_file(dev->name, S_IRUGO,
4670 if (IS_ERR(sky2->debugfs))
4671 sky2->debugfs = NULL;
4677 static struct notifier_block sky2_notifier = {
4678 .notifier_call = sky2_device_event,
4682 static __init void sky2_debug_init(void)
4686 ent = debugfs_create_dir("sky2", NULL);
4687 if (!ent || IS_ERR(ent))
4691 register_netdevice_notifier(&sky2_notifier);
4694 static __exit void sky2_debug_cleanup(void)
4697 unregister_netdevice_notifier(&sky2_notifier);
4698 debugfs_remove(sky2_debug);
4704 #define sky2_debug_init()
4705 #define sky2_debug_cleanup()
4708 /* Two copies of network device operations to handle special case of
4709 not allowing netpoll on second port */
4710 static const struct net_device_ops sky2_netdev_ops[2] = {
4712 .ndo_open = sky2_open,
4713 .ndo_stop = sky2_close,
4714 .ndo_start_xmit = sky2_xmit_frame,
4715 .ndo_do_ioctl = sky2_ioctl,
4716 .ndo_validate_addr = eth_validate_addr,
4717 .ndo_set_mac_address = sky2_set_mac_address,
4718 .ndo_set_rx_mode = sky2_set_multicast,
4719 .ndo_change_mtu = sky2_change_mtu,
4720 .ndo_fix_features = sky2_fix_features,
4721 .ndo_set_features = sky2_set_features,
4722 .ndo_tx_timeout = sky2_tx_timeout,
4723 .ndo_get_stats64 = sky2_get_stats,
4724 #ifdef CONFIG_NET_POLL_CONTROLLER
4725 .ndo_poll_controller = sky2_netpoll,
4729 .ndo_open = sky2_open,
4730 .ndo_stop = sky2_close,
4731 .ndo_start_xmit = sky2_xmit_frame,
4732 .ndo_do_ioctl = sky2_ioctl,
4733 .ndo_validate_addr = eth_validate_addr,
4734 .ndo_set_mac_address = sky2_set_mac_address,
4735 .ndo_set_rx_mode = sky2_set_multicast,
4736 .ndo_change_mtu = sky2_change_mtu,
4737 .ndo_fix_features = sky2_fix_features,
4738 .ndo_set_features = sky2_set_features,
4739 .ndo_tx_timeout = sky2_tx_timeout,
4740 .ndo_get_stats64 = sky2_get_stats,
4744 /* Initialize network device */
4745 static struct net_device *sky2_init_netdev(struct sky2_hw *hw, unsigned port,
4746 int highmem, int wol)
4748 struct sky2_port *sky2;
4749 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
4755 SET_NETDEV_DEV(dev, &hw->pdev->dev);
4756 dev->irq = hw->pdev->irq;
4757 dev->ethtool_ops = &sky2_ethtool_ops;
4758 dev->watchdog_timeo = TX_WATCHDOG;
4759 dev->netdev_ops = &sky2_netdev_ops[port];
4761 sky2 = netdev_priv(dev);
4764 sky2->msg_enable = netif_msg_init(debug, default_msg);
4766 u64_stats_init(&sky2->tx_stats.syncp);
4767 u64_stats_init(&sky2->rx_stats.syncp);
4769 /* Auto speed and flow control */
4770 sky2->flags = SKY2_FLAG_AUTO_SPEED | SKY2_FLAG_AUTO_PAUSE;
4771 if (hw->chip_id != CHIP_ID_YUKON_XL)
4772 dev->hw_features |= NETIF_F_RXCSUM;
4774 sky2->flow_mode = FC_BOTH;
4778 sky2->advertising = sky2_supported_modes(hw);
4781 spin_lock_init(&sky2->phy_lock);
4783 sky2->tx_pending = TX_DEF_PENDING;
4784 sky2->tx_ring_size = roundup_ring_size(TX_DEF_PENDING);
4785 sky2->rx_pending = RX_DEF_PENDING;
4787 hw->dev[port] = dev;
4791 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO;
4794 dev->features |= NETIF_F_HIGHDMA;
4796 /* Enable receive hashing unless hardware is known broken */
4797 if (!(hw->flags & SKY2_HW_RSS_BROKEN))
4798 dev->hw_features |= NETIF_F_RXHASH;
4800 if (!(hw->flags & SKY2_HW_VLAN_BROKEN)) {
4801 dev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX |
4802 NETIF_F_HW_VLAN_CTAG_RX;
4803 dev->vlan_features |= SKY2_VLAN_OFFLOADS;
4806 dev->features |= dev->hw_features;
4808 /* try to get mac address in the following order:
4809 * 1) from device tree data
4810 * 2) from internal registers set by bootloader
4812 iap = of_get_mac_address(hw->pdev->dev.of_node);
4814 memcpy(dev->dev_addr, iap, ETH_ALEN);
4816 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8,
4822 static void sky2_show_addr(struct net_device *dev)
4824 const struct sky2_port *sky2 = netdev_priv(dev);
4826 netif_info(sky2, probe, dev, "addr %pM\n", dev->dev_addr);
4829 /* Handle software interrupt used during MSI test */
4830 static irqreturn_t sky2_test_intr(int irq, void *dev_id)
4832 struct sky2_hw *hw = dev_id;
4833 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4838 if (status & Y2_IS_IRQ_SW) {
4839 hw->flags |= SKY2_HW_USE_MSI;
4840 wake_up(&hw->msi_wait);
4841 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4843 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4848 /* Test interrupt path by forcing a a software IRQ */
4849 static int sky2_test_msi(struct sky2_hw *hw)
4851 struct pci_dev *pdev = hw->pdev;
4854 init_waitqueue_head(&hw->msi_wait);
4856 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4858 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4862 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4864 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4865 sky2_read8(hw, B0_CTST);
4867 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4869 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4870 /* MSI test failed, go back to INTx mode */
4871 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4872 "switching to INTx mode.\n");
4875 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4878 sky2_write32(hw, B0_IMSK, 0);
4879 sky2_read32(hw, B0_IMSK);
4881 free_irq(pdev->irq, hw);
4886 /* This driver supports yukon2 chipset only */
4887 static const char *sky2_name(u8 chipid, char *buf, int sz)
4889 const char *name[] = {
4891 "EC Ultra", /* 0xb4 */
4892 "Extreme", /* 0xb5 */
4896 "Supreme", /* 0xb9 */
4898 "Unknown", /* 0xbb */
4899 "Optima", /* 0xbc */
4900 "OptimaEEE", /* 0xbd */
4901 "Optima 2", /* 0xbe */
4904 if (chipid >= CHIP_ID_YUKON_XL && chipid <= CHIP_ID_YUKON_OP_2)
4905 strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
4907 snprintf(buf, sz, "(chip %#x)", chipid);
4911 static int sky2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4913 struct net_device *dev, *dev1;
4915 int err, using_dac = 0, wol_default;
4919 err = pci_enable_device(pdev);
4921 dev_err(&pdev->dev, "cannot enable PCI device\n");
4925 /* Get configuration information
4926 * Note: only regular PCI config access once to test for HW issues
4927 * other PCI access through shared memory for speed and to
4928 * avoid MMCONFIG problems.
4930 err = pci_read_config_dword(pdev, PCI_DEV_REG2, ®);
4932 dev_err(&pdev->dev, "PCI read config failed\n");
4933 goto err_out_disable;
4937 dev_err(&pdev->dev, "PCI configuration read error\n");
4939 goto err_out_disable;
4942 err = pci_request_regions(pdev, DRV_NAME);
4944 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4945 goto err_out_disable;
4948 pci_set_master(pdev);
4950 if (sizeof(dma_addr_t) > sizeof(u32) &&
4951 !(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))) {
4953 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4955 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4956 "for consistent allocations\n");
4957 goto err_out_free_regions;
4960 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4962 dev_err(&pdev->dev, "no usable DMA configuration\n");
4963 goto err_out_free_regions;
4969 /* The sk98lin vendor driver uses hardware byte swapping but
4970 * this driver uses software swapping.
4972 reg &= ~PCI_REV_DESC;
4973 err = pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
4975 dev_err(&pdev->dev, "PCI write config failed\n");
4976 goto err_out_free_regions;
4980 wol_default = device_may_wakeup(&pdev->dev) ? WAKE_MAGIC : 0;
4984 hw = kzalloc(sizeof(*hw) + strlen(DRV_NAME "@pci:")
4985 + strlen(pci_name(pdev)) + 1, GFP_KERNEL);
4987 goto err_out_free_regions;
4990 sprintf(hw->irq_name, DRV_NAME "@pci:%s", pci_name(pdev));
4992 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
4994 dev_err(&pdev->dev, "cannot map device registers\n");
4995 goto err_out_free_hw;
4998 err = sky2_init(hw);
5000 goto err_out_iounmap;
5002 /* ring for status responses */
5003 hw->st_size = hw->ports * roundup_pow_of_two(3*RX_MAX_PENDING + TX_MAX_PENDING);
5004 hw->st_le = pci_alloc_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
5011 dev_info(&pdev->dev, "Yukon-2 %s chip revision %d\n",
5012 sky2_name(hw->chip_id, buf1, sizeof(buf1)), hw->chip_rev);
5016 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
5019 goto err_out_free_pci;
5022 if (!disable_msi && pci_enable_msi(pdev) == 0) {
5023 err = sky2_test_msi(hw);
5025 pci_disable_msi(pdev);
5026 if (err != -EOPNOTSUPP)
5027 goto err_out_free_netdev;
5031 netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
5033 err = register_netdev(dev);
5035 dev_err(&pdev->dev, "cannot register net device\n");
5036 goto err_out_free_netdev;
5039 netif_carrier_off(dev);
5041 sky2_show_addr(dev);
5043 if (hw->ports > 1) {
5044 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
5047 goto err_out_unregister;
5050 err = register_netdev(dev1);
5052 dev_err(&pdev->dev, "cannot register second net device\n");
5053 goto err_out_free_dev1;
5056 err = sky2_setup_irq(hw, hw->irq_name);
5058 goto err_out_unregister_dev1;
5060 sky2_show_addr(dev1);
5063 setup_timer(&hw->watchdog_timer, sky2_watchdog, (unsigned long) hw);
5064 INIT_WORK(&hw->restart_work, sky2_restart);
5066 pci_set_drvdata(pdev, hw);
5067 pdev->d3_delay = 150;
5071 err_out_unregister_dev1:
5072 unregister_netdev(dev1);
5076 unregister_netdev(dev);
5077 err_out_free_netdev:
5078 if (hw->flags & SKY2_HW_USE_MSI)
5079 pci_disable_msi(pdev);
5082 pci_free_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
5083 hw->st_le, hw->st_dma);
5085 sky2_write8(hw, B0_CTST, CS_RST_SET);
5090 err_out_free_regions:
5091 pci_release_regions(pdev);
5093 pci_disable_device(pdev);
5098 static void sky2_remove(struct pci_dev *pdev)
5100 struct sky2_hw *hw = pci_get_drvdata(pdev);
5106 del_timer_sync(&hw->watchdog_timer);
5107 cancel_work_sync(&hw->restart_work);
5109 for (i = hw->ports-1; i >= 0; --i)
5110 unregister_netdev(hw->dev[i]);
5112 sky2_write32(hw, B0_IMSK, 0);
5113 sky2_read32(hw, B0_IMSK);
5117 sky2_write8(hw, B0_CTST, CS_RST_SET);
5118 sky2_read8(hw, B0_CTST);
5120 if (hw->ports > 1) {
5121 napi_disable(&hw->napi);
5122 free_irq(pdev->irq, hw);
5125 if (hw->flags & SKY2_HW_USE_MSI)
5126 pci_disable_msi(pdev);
5127 pci_free_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
5128 hw->st_le, hw->st_dma);
5129 pci_release_regions(pdev);
5130 pci_disable_device(pdev);
5132 for (i = hw->ports-1; i >= 0; --i)
5133 free_netdev(hw->dev[i]);
5139 static int sky2_suspend(struct device *dev)
5141 struct pci_dev *pdev = to_pci_dev(dev);
5142 struct sky2_hw *hw = pci_get_drvdata(pdev);
5148 del_timer_sync(&hw->watchdog_timer);
5149 cancel_work_sync(&hw->restart_work);
5154 for (i = 0; i < hw->ports; i++) {
5155 struct net_device *dev = hw->dev[i];
5156 struct sky2_port *sky2 = netdev_priv(dev);
5159 sky2_wol_init(sky2);
5168 #ifdef CONFIG_PM_SLEEP
5169 static int sky2_resume(struct device *dev)
5171 struct pci_dev *pdev = to_pci_dev(dev);
5172 struct sky2_hw *hw = pci_get_drvdata(pdev);
5178 /* Re-enable all clocks */
5179 err = pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
5181 dev_err(&pdev->dev, "PCI write config failed\n");
5193 dev_err(&pdev->dev, "resume failed (%d)\n", err);
5194 pci_disable_device(pdev);
5198 static SIMPLE_DEV_PM_OPS(sky2_pm_ops, sky2_suspend, sky2_resume);
5199 #define SKY2_PM_OPS (&sky2_pm_ops)
5203 #define SKY2_PM_OPS NULL
5206 static void sky2_shutdown(struct pci_dev *pdev)
5208 sky2_suspend(&pdev->dev);
5209 pci_wake_from_d3(pdev, device_may_wakeup(&pdev->dev));
5210 pci_set_power_state(pdev, PCI_D3hot);
5213 static struct pci_driver sky2_driver = {
5215 .id_table = sky2_id_table,
5216 .probe = sky2_probe,
5217 .remove = sky2_remove,
5218 .shutdown = sky2_shutdown,
5219 .driver.pm = SKY2_PM_OPS,
5222 static int __init sky2_init_module(void)
5224 pr_info("driver version " DRV_VERSION "\n");
5227 return pci_register_driver(&sky2_driver);
5230 static void __exit sky2_cleanup_module(void)
5232 pci_unregister_driver(&sky2_driver);
5233 sky2_debug_cleanup();
5236 module_init(sky2_init_module);
5237 module_exit(sky2_cleanup_module);
5239 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
5240 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
5241 MODULE_LICENSE("GPL");
5242 MODULE_VERSION(DRV_VERSION);