2 * New driver for Marvell Yukon 2 chipset.
3 * Based on earlier sk98lin, and skge driver.
5 * This driver intentionally does not support all the features
6 * of the original driver such as link fail-over and link management because
7 * those should be done at higher levels.
9 * Copyright (C) 2005 Stephen Hemminger <shemminger@osdl.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
27 #include <linux/crc32.h>
28 #include <linux/kernel.h>
29 #include <linux/module.h>
30 #include <linux/netdevice.h>
31 #include <linux/dma-mapping.h>
32 #include <linux/etherdevice.h>
33 #include <linux/ethtool.h>
34 #include <linux/pci.h>
36 #include <linux/slab.h>
38 #include <linux/tcp.h>
40 #include <linux/delay.h>
41 #include <linux/workqueue.h>
42 #include <linux/if_vlan.h>
43 #include <linux/prefetch.h>
44 #include <linux/debugfs.h>
45 #include <linux/mii.h>
51 #define DRV_NAME "sky2"
52 #define DRV_VERSION "1.28"
55 * The Yukon II chipset takes 64 bit command blocks (called list elements)
56 * that are organized into three (receive, transmit, status) different rings
60 #define RX_LE_SIZE 1024
61 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
62 #define RX_MAX_PENDING (RX_LE_SIZE/6 - 2)
63 #define RX_DEF_PENDING RX_MAX_PENDING
65 /* This is the worst case number of transmit list elements for a single skb:
66 VLAN:GSO + CKSUM + Data + skb_frags * DMA */
67 #define MAX_SKB_TX_LE (2 + (sizeof(dma_addr_t)/sizeof(u32))*(MAX_SKB_FRAGS+1))
68 #define TX_MIN_PENDING (MAX_SKB_TX_LE+1)
69 #define TX_MAX_PENDING 1024
70 #define TX_DEF_PENDING 127
72 #define TX_WATCHDOG (5 * HZ)
73 #define NAPI_WEIGHT 64
74 #define PHY_RETRIES 1000
76 #define SKY2_EEPROM_MAGIC 0x9955aabb
78 #define RING_NEXT(x, s) (((x)+1) & ((s)-1))
80 static const u32 default_msg =
81 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
82 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
83 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
85 static int debug = -1; /* defaults above */
86 module_param(debug, int, 0);
87 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
89 static int copybreak __read_mostly = 128;
90 module_param(copybreak, int, 0);
91 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
93 static int disable_msi = 0;
94 module_param(disable_msi, int, 0);
95 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
97 static int legacy_pme = 0;
98 module_param(legacy_pme, int, 0);
99 MODULE_PARM_DESC(legacy_pme, "Legacy power management");
101 static DEFINE_PCI_DEVICE_TABLE(sky2_id_table) = {
102 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
103 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
104 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E01) }, /* SK-9E21M */
105 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
106 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
107 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
108 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B03) }, /* DGE-550T */
109 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4354) }, /* 88E8040 */
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4355) }, /* 88E8040T */
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4356) }, /* 88EC033 */
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4357) }, /* 88E8042 */
125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x435A) }, /* 88E8048 */
126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) }, /* 88E8052 */
127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) }, /* 88E8050 */
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) }, /* 88E8053 */
129 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) }, /* 88E8055 */
130 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) }, /* 88E8056 */
131 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4365) }, /* 88E8070 */
132 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) }, /* 88EC036 */
133 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) }, /* 88EC032 */
134 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) }, /* 88EC034 */
135 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4369) }, /* 88EC042 */
136 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436A) }, /* 88E8058 */
137 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436B) }, /* 88E8071 */
138 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436C) }, /* 88E8072 */
139 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436D) }, /* 88E8055 */
140 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4370) }, /* 88E8075 */
141 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4380) }, /* 88E8057 */
142 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4381) }, /* 88E8059 */
146 MODULE_DEVICE_TABLE(pci, sky2_id_table);
148 /* Avoid conditionals by using array */
149 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
150 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
151 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
153 static void sky2_set_multicast(struct net_device *dev);
155 /* Access to PHY via serial interconnect */
156 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
160 gma_write16(hw, port, GM_SMI_DATA, val);
161 gma_write16(hw, port, GM_SMI_CTRL,
162 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
164 for (i = 0; i < PHY_RETRIES; i++) {
165 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
169 if (!(ctrl & GM_SMI_CT_BUSY))
175 dev_warn(&hw->pdev->dev, "%s: phy write timeout\n", hw->dev[port]->name);
179 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
183 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
187 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
188 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
190 for (i = 0; i < PHY_RETRIES; i++) {
191 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
195 if (ctrl & GM_SMI_CT_RD_VAL) {
196 *val = gma_read16(hw, port, GM_SMI_DATA);
203 dev_warn(&hw->pdev->dev, "%s: phy read timeout\n", hw->dev[port]->name);
206 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
210 static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
213 __gm_phy_read(hw, port, reg, &v);
218 static void sky2_power_on(struct sky2_hw *hw)
220 /* switch power to VCC (WA for VAUX problem) */
221 sky2_write8(hw, B0_POWER_CTRL,
222 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
224 /* disable Core Clock Division, */
225 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
227 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
228 /* enable bits are inverted */
229 sky2_write8(hw, B2_Y2_CLK_GATE,
230 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
231 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
232 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
234 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
236 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
239 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
241 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
242 /* set all bits to 0 except bits 15..12 and 8 */
243 reg &= P_ASPM_CONTROL_MSK;
244 sky2_pci_write32(hw, PCI_DEV_REG4, reg);
246 reg = sky2_pci_read32(hw, PCI_DEV_REG5);
247 /* set all bits to 0 except bits 28 & 27 */
248 reg &= P_CTL_TIM_VMAIN_AV_MSK;
249 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
251 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
253 sky2_write16(hw, B0_CTST, Y2_HW_WOL_ON);
255 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
256 reg = sky2_read32(hw, B2_GP_IO);
257 reg |= GLB_GPIO_STAT_RACE_DIS;
258 sky2_write32(hw, B2_GP_IO, reg);
260 sky2_read32(hw, B2_GP_IO);
263 /* Turn on "driver loaded" LED */
264 sky2_write16(hw, B0_CTST, Y2_LED_STAT_ON);
267 static void sky2_power_aux(struct sky2_hw *hw)
269 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
270 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
272 /* enable bits are inverted */
273 sky2_write8(hw, B2_Y2_CLK_GATE,
274 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
275 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
276 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
278 /* switch power to VAUX if supported and PME from D3cold */
279 if ( (sky2_read32(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
280 pci_pme_capable(hw->pdev, PCI_D3cold))
281 sky2_write8(hw, B0_POWER_CTRL,
282 (PC_VAUX_ENA | PC_VCC_ENA |
283 PC_VAUX_ON | PC_VCC_OFF));
285 /* turn off "driver loaded LED" */
286 sky2_write16(hw, B0_CTST, Y2_LED_STAT_OFF);
289 static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
293 /* disable all GMAC IRQ's */
294 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
296 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
297 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
298 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
299 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
301 reg = gma_read16(hw, port, GM_RX_CTRL);
302 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
303 gma_write16(hw, port, GM_RX_CTRL, reg);
306 /* flow control to advertise bits */
307 static const u16 copper_fc_adv[] = {
309 [FC_TX] = PHY_M_AN_ASP,
310 [FC_RX] = PHY_M_AN_PC,
311 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
314 /* flow control to advertise bits when using 1000BaseX */
315 static const u16 fiber_fc_adv[] = {
316 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
317 [FC_TX] = PHY_M_P_ASYM_MD_X,
318 [FC_RX] = PHY_M_P_SYM_MD_X,
319 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
322 /* flow control to GMA disable bits */
323 static const u16 gm_fc_disable[] = {
324 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
325 [FC_TX] = GM_GPCR_FC_RX_DIS,
326 [FC_RX] = GM_GPCR_FC_TX_DIS,
331 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
333 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
334 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
336 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
337 !(hw->flags & SKY2_HW_NEWER_PHY)) {
338 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
340 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
342 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
344 /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
345 if (hw->chip_id == CHIP_ID_YUKON_EC)
346 /* set downshift counter to 3x and enable downshift */
347 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
349 /* set master & slave downshift counter to 1x */
350 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
352 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
355 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
356 if (sky2_is_copper(hw)) {
357 if (!(hw->flags & SKY2_HW_GIGABIT)) {
358 /* enable automatic crossover */
359 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
361 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
362 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
365 /* Enable Class A driver for FE+ A0 */
366 spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2);
367 spec |= PHY_M_FESC_SEL_CL_A;
368 gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec);
371 /* disable energy detect */
372 ctrl &= ~PHY_M_PC_EN_DET_MSK;
374 /* enable automatic crossover */
375 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
377 /* downshift on PHY 88E1112 and 88E1149 is changed */
378 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
379 (hw->flags & SKY2_HW_NEWER_PHY)) {
380 /* set downshift counter to 3x and enable downshift */
381 ctrl &= ~PHY_M_PC_DSC_MSK;
382 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
386 /* workaround for deviation #4.88 (CRC errors) */
387 /* disable Automatic Crossover */
389 ctrl &= ~PHY_M_PC_MDIX_MSK;
392 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
394 /* special setup for PHY 88E1112 Fiber */
395 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
396 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
398 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
399 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
400 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
401 ctrl &= ~PHY_M_MAC_MD_MSK;
402 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
403 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
405 if (hw->pmd_type == 'P') {
406 /* select page 1 to access Fiber registers */
407 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
409 /* for SFP-module set SIGDET polarity to low */
410 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
411 ctrl |= PHY_M_FIB_SIGD_POL;
412 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
415 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
423 if (sky2->flags & SKY2_FLAG_AUTO_SPEED) {
424 if (sky2_is_copper(hw)) {
425 if (sky2->advertising & ADVERTISED_1000baseT_Full)
426 ct1000 |= PHY_M_1000C_AFD;
427 if (sky2->advertising & ADVERTISED_1000baseT_Half)
428 ct1000 |= PHY_M_1000C_AHD;
429 if (sky2->advertising & ADVERTISED_100baseT_Full)
430 adv |= PHY_M_AN_100_FD;
431 if (sky2->advertising & ADVERTISED_100baseT_Half)
432 adv |= PHY_M_AN_100_HD;
433 if (sky2->advertising & ADVERTISED_10baseT_Full)
434 adv |= PHY_M_AN_10_FD;
435 if (sky2->advertising & ADVERTISED_10baseT_Half)
436 adv |= PHY_M_AN_10_HD;
438 } else { /* special defines for FIBER (88E1040S only) */
439 if (sky2->advertising & ADVERTISED_1000baseT_Full)
440 adv |= PHY_M_AN_1000X_AFD;
441 if (sky2->advertising & ADVERTISED_1000baseT_Half)
442 adv |= PHY_M_AN_1000X_AHD;
445 /* Restart Auto-negotiation */
446 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
448 /* forced speed/duplex settings */
449 ct1000 = PHY_M_1000C_MSE;
451 /* Disable auto update for duplex flow control and duplex */
452 reg |= GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_SPD_DIS;
454 switch (sky2->speed) {
456 ctrl |= PHY_CT_SP1000;
457 reg |= GM_GPCR_SPEED_1000;
460 ctrl |= PHY_CT_SP100;
461 reg |= GM_GPCR_SPEED_100;
465 if (sky2->duplex == DUPLEX_FULL) {
466 reg |= GM_GPCR_DUP_FULL;
467 ctrl |= PHY_CT_DUP_MD;
468 } else if (sky2->speed < SPEED_1000)
469 sky2->flow_mode = FC_NONE;
472 if (sky2->flags & SKY2_FLAG_AUTO_PAUSE) {
473 if (sky2_is_copper(hw))
474 adv |= copper_fc_adv[sky2->flow_mode];
476 adv |= fiber_fc_adv[sky2->flow_mode];
478 reg |= GM_GPCR_AU_FCT_DIS;
479 reg |= gm_fc_disable[sky2->flow_mode];
481 /* Forward pause packets to GMAC? */
482 if (sky2->flow_mode & FC_RX)
483 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
485 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
488 gma_write16(hw, port, GM_GP_CTRL, reg);
490 if (hw->flags & SKY2_HW_GIGABIT)
491 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
493 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
494 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
496 /* Setup Phy LED's */
497 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
500 switch (hw->chip_id) {
501 case CHIP_ID_YUKON_FE:
502 /* on 88E3082 these bits are at 11..9 (shifted left) */
503 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
505 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
507 /* delete ACT LED control bits */
508 ctrl &= ~PHY_M_FELP_LED1_MSK;
509 /* change ACT LED control to blink mode */
510 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
511 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
514 case CHIP_ID_YUKON_FE_P:
515 /* Enable Link Partner Next Page */
516 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
517 ctrl |= PHY_M_PC_ENA_LIP_NP;
519 /* disable Energy Detect and enable scrambler */
520 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
521 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
523 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
524 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
525 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
526 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
528 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
531 case CHIP_ID_YUKON_XL:
532 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
534 /* select page 3 to access LED control register */
535 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
537 /* set LED Function Control register */
538 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
539 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
540 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
541 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
542 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
544 /* set Polarity Control register */
545 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
546 (PHY_M_POLC_LS1_P_MIX(4) |
547 PHY_M_POLC_IS0_P_MIX(4) |
548 PHY_M_POLC_LOS_CTRL(2) |
549 PHY_M_POLC_INIT_CTRL(2) |
550 PHY_M_POLC_STA1_CTRL(2) |
551 PHY_M_POLC_STA0_CTRL(2)));
553 /* restore page register */
554 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
557 case CHIP_ID_YUKON_EC_U:
558 case CHIP_ID_YUKON_EX:
559 case CHIP_ID_YUKON_SUPR:
560 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
562 /* select page 3 to access LED control register */
563 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
565 /* set LED Function Control register */
566 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
567 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
568 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
569 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
570 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
572 /* set Blink Rate in LED Timer Control Register */
573 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
574 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
575 /* restore page register */
576 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
580 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
581 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
583 /* turn off the Rx LED (LED_RX) */
584 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
587 if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_UL_2) {
588 /* apply fixes in PHY AFE */
589 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
591 /* increase differential signal amplitude in 10BASE-T */
592 gm_phy_write(hw, port, 0x18, 0xaa99);
593 gm_phy_write(hw, port, 0x17, 0x2011);
595 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
596 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
597 gm_phy_write(hw, port, 0x18, 0xa204);
598 gm_phy_write(hw, port, 0x17, 0x2002);
601 /* set page register to 0 */
602 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
603 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
604 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
605 /* apply workaround for integrated resistors calibration */
606 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
607 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
608 } else if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
609 /* apply fixes in PHY AFE */
610 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00ff);
612 /* apply RDAC termination workaround */
613 gm_phy_write(hw, port, 24, 0x2800);
614 gm_phy_write(hw, port, 23, 0x2001);
616 /* set page register back to 0 */
617 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
618 } else if (hw->chip_id != CHIP_ID_YUKON_EX &&
619 hw->chip_id < CHIP_ID_YUKON_SUPR) {
620 /* no effect on Yukon-XL */
621 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
623 if (!(sky2->flags & SKY2_FLAG_AUTO_SPEED) ||
624 sky2->speed == SPEED_100) {
625 /* turn on 100 Mbps LED (LED_LINK100) */
626 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
630 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
634 /* Enable phy interrupt on auto-negotiation complete (or link up) */
635 if (sky2->flags & SKY2_FLAG_AUTO_SPEED)
636 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
638 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
641 static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
642 static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
644 static void sky2_phy_power_up(struct sky2_hw *hw, unsigned port)
648 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
649 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
650 reg1 &= ~phy_power[port];
652 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > CHIP_REV_YU_XL_A1)
653 reg1 |= coma_mode[port];
655 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
656 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
657 sky2_pci_read32(hw, PCI_DEV_REG1);
659 if (hw->chip_id == CHIP_ID_YUKON_FE)
660 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_ANE);
661 else if (hw->flags & SKY2_HW_ADV_POWER_CTL)
662 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
665 static void sky2_phy_power_down(struct sky2_hw *hw, unsigned port)
670 /* release GPHY Control reset */
671 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
673 /* release GMAC reset */
674 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
676 if (hw->flags & SKY2_HW_NEWER_PHY) {
677 /* select page 2 to access MAC control register */
678 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
680 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
681 /* allow GMII Power Down */
682 ctrl &= ~PHY_M_MAC_GMIF_PUP;
683 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
685 /* set page register back to 0 */
686 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
689 /* setup General Purpose Control Register */
690 gma_write16(hw, port, GM_GP_CTRL,
691 GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 |
692 GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_FCT_DIS |
695 if (hw->chip_id != CHIP_ID_YUKON_EC) {
696 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
697 /* select page 2 to access MAC control register */
698 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
700 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
701 /* enable Power Down */
702 ctrl |= PHY_M_PC_POW_D_ENA;
703 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
705 /* set page register back to 0 */
706 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
709 /* set IEEE compatible Power Down Mode (dev. #4.99) */
710 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_PDOWN);
713 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
714 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
715 reg1 |= phy_power[port]; /* set PHY to PowerDown/COMA Mode */
716 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
717 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
721 static void sky2_enable_rx_tx(struct sky2_port *sky2)
723 struct sky2_hw *hw = sky2->hw;
724 unsigned port = sky2->port;
727 reg = gma_read16(hw, port, GM_GP_CTRL);
728 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
729 gma_write16(hw, port, GM_GP_CTRL, reg);
732 /* Force a renegotiation */
733 static void sky2_phy_reinit(struct sky2_port *sky2)
735 spin_lock_bh(&sky2->phy_lock);
736 sky2_phy_init(sky2->hw, sky2->port);
737 sky2_enable_rx_tx(sky2);
738 spin_unlock_bh(&sky2->phy_lock);
741 /* Put device in state to listen for Wake On Lan */
742 static void sky2_wol_init(struct sky2_port *sky2)
744 struct sky2_hw *hw = sky2->hw;
745 unsigned port = sky2->port;
746 enum flow_control save_mode;
749 /* Bring hardware out of reset */
750 sky2_write16(hw, B0_CTST, CS_RST_CLR);
751 sky2_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
753 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
754 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
757 * sky2_reset will re-enable on resume
759 save_mode = sky2->flow_mode;
760 ctrl = sky2->advertising;
762 sky2->advertising &= ~(ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full);
763 sky2->flow_mode = FC_NONE;
765 spin_lock_bh(&sky2->phy_lock);
766 sky2_phy_power_up(hw, port);
767 sky2_phy_init(hw, port);
768 spin_unlock_bh(&sky2->phy_lock);
770 sky2->flow_mode = save_mode;
771 sky2->advertising = ctrl;
773 /* Set GMAC to no flow control and auto update for speed/duplex */
774 gma_write16(hw, port, GM_GP_CTRL,
775 GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
776 GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
778 /* Set WOL address */
779 memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
780 sky2->netdev->dev_addr, ETH_ALEN);
782 /* Turn on appropriate WOL control bits */
783 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
785 if (sky2->wol & WAKE_PHY)
786 ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
788 ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
790 if (sky2->wol & WAKE_MAGIC)
791 ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
793 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;
795 ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
796 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
798 /* Disable PiG firmware */
799 sky2_write16(hw, B0_CTST, Y2_HW_WOL_OFF);
801 /* Needed by some broken BIOSes, use PCI rather than PCI-e for WOL */
803 u32 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
804 reg1 |= PCI_Y2_PME_LEGACY;
805 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
809 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
812 static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
814 struct net_device *dev = hw->dev[port];
816 if ( (hw->chip_id == CHIP_ID_YUKON_EX &&
817 hw->chip_rev != CHIP_REV_YU_EX_A0) ||
818 hw->chip_id >= CHIP_ID_YUKON_FE_P) {
819 /* Yukon-Extreme B0 and further Extreme devices */
820 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
821 } else if (dev->mtu > ETH_DATA_LEN) {
822 /* set Tx GMAC FIFO Almost Empty Threshold */
823 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
824 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
826 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
828 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
831 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
833 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
837 const u8 *addr = hw->dev[port]->dev_addr;
839 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
840 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
842 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
844 if (hw->chip_id == CHIP_ID_YUKON_XL &&
845 hw->chip_rev == CHIP_REV_YU_XL_A0 &&
847 /* WA DEV_472 -- looks like crossed wires on port 2 */
848 /* clear GMAC 1 Control reset */
849 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
851 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
852 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
853 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
854 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
855 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
858 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
860 /* Enable Transmit FIFO Underrun */
861 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
863 spin_lock_bh(&sky2->phy_lock);
864 sky2_phy_power_up(hw, port);
865 sky2_phy_init(hw, port);
866 spin_unlock_bh(&sky2->phy_lock);
869 reg = gma_read16(hw, port, GM_PHY_ADDR);
870 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
872 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
873 gma_read16(hw, port, i);
874 gma_write16(hw, port, GM_PHY_ADDR, reg);
876 /* transmit control */
877 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
879 /* receive control reg: unicast + multicast + no FCS */
880 gma_write16(hw, port, GM_RX_CTRL,
881 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
883 /* transmit flow control */
884 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
886 /* transmit parameter */
887 gma_write16(hw, port, GM_TX_PARAM,
888 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
889 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
890 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
891 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
893 /* serial mode register */
894 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
895 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
897 if (hw->dev[port]->mtu > ETH_DATA_LEN)
898 reg |= GM_SMOD_JUMBO_ENA;
900 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
901 hw->chip_rev == CHIP_REV_YU_EC_U_B1)
902 reg |= GM_NEW_FLOW_CTRL;
904 gma_write16(hw, port, GM_SERIAL_MODE, reg);
906 /* virtual address for data */
907 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
909 /* physical address: used for pause frames */
910 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
912 /* ignore counter overflows */
913 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
914 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
915 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
917 /* Configure Rx MAC FIFO */
918 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
919 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
920 if (hw->chip_id == CHIP_ID_YUKON_EX ||
921 hw->chip_id == CHIP_ID_YUKON_FE_P)
922 rx_reg |= GMF_RX_OVER_ON;
924 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
926 if (hw->chip_id == CHIP_ID_YUKON_XL) {
927 /* Hardware errata - clear flush mask */
928 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0);
930 /* Flush Rx MAC FIFO on any flow control or error */
931 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
934 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
935 reg = RX_GMF_FL_THR_DEF + 1;
936 /* Another magic mystery workaround from sk98lin */
937 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
938 hw->chip_rev == CHIP_REV_YU_FE2_A0)
940 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
942 /* Configure Tx MAC FIFO */
943 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
944 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
946 /* On chips without ram buffer, pause is controlled by MAC level */
947 if (!(hw->flags & SKY2_HW_RAM_BUFFER)) {
948 /* Pause threshold is scaled by 8 in bytes */
949 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
950 hw->chip_rev == CHIP_REV_YU_FE2_A0)
954 sky2_write16(hw, SK_REG(port, RX_GMF_UP_THR), reg);
955 sky2_write16(hw, SK_REG(port, RX_GMF_LP_THR), 768 / 8);
957 sky2_set_tx_stfwd(hw, port);
960 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
961 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
962 /* disable dynamic watermark */
963 reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA));
964 reg &= ~TX_DYN_WM_ENA;
965 sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg);
969 /* Assign Ram Buffer allocation to queue */
970 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
974 /* convert from K bytes to qwords used for hw register */
977 end = start + space - 1;
979 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
980 sky2_write32(hw, RB_ADDR(q, RB_START), start);
981 sky2_write32(hw, RB_ADDR(q, RB_END), end);
982 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
983 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
985 if (q == Q_R1 || q == Q_R2) {
986 u32 tp = space - space/4;
988 /* On receive queue's set the thresholds
989 * give receiver priority when > 3/4 full
990 * send pause when down to 2K
992 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
993 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
996 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
997 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
999 /* Enable store & forward on Tx queue's because
1000 * Tx FIFO is only 1K on Yukon
1002 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
1005 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
1006 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
1009 /* Setup Bus Memory Interface */
1010 static void sky2_qset(struct sky2_hw *hw, u16 q)
1012 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
1013 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
1014 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
1015 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
1018 /* Setup prefetch unit registers. This is the interface between
1019 * hardware and driver list elements
1021 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
1022 dma_addr_t addr, u32 last)
1024 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1025 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
1026 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), upper_32_bits(addr));
1027 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), lower_32_bits(addr));
1028 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
1029 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
1031 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
1034 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2, u16 *slot)
1036 struct sky2_tx_le *le = sky2->tx_le + *slot;
1038 *slot = RING_NEXT(*slot, sky2->tx_ring_size);
1043 static void tx_init(struct sky2_port *sky2)
1045 struct sky2_tx_le *le;
1047 sky2->tx_prod = sky2->tx_cons = 0;
1048 sky2->tx_tcpsum = 0;
1049 sky2->tx_last_mss = 0;
1051 le = get_tx_le(sky2, &sky2->tx_prod);
1053 le->opcode = OP_ADDR64 | HW_OWNER;
1054 sky2->tx_last_upper = 0;
1057 /* Update chip's next pointer */
1058 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
1060 /* Make sure write' to descriptors are complete before we tell hardware */
1062 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
1064 /* Synchronize I/O on since next processor may write to tail */
1069 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
1071 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
1072 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
1077 static unsigned sky2_get_rx_threshold(struct sky2_port *sky2)
1081 /* Space needed for frame data + headers rounded up */
1082 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1084 /* Stopping point for hardware truncation */
1085 return (size - 8) / sizeof(u32);
1088 static unsigned sky2_get_rx_data_size(struct sky2_port *sky2)
1090 struct rx_ring_info *re;
1093 /* Space needed for frame data + headers rounded up */
1094 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1096 sky2->rx_nfrags = size >> PAGE_SHIFT;
1097 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1099 /* Compute residue after pages */
1100 size -= sky2->rx_nfrags << PAGE_SHIFT;
1102 /* Optimize to handle small packets and headers */
1103 if (size < copybreak)
1105 if (size < ETH_HLEN)
1111 /* Build description to hardware for one receive segment */
1112 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
1113 dma_addr_t map, unsigned len)
1115 struct sky2_rx_le *le;
1117 if (sizeof(dma_addr_t) > sizeof(u32)) {
1118 le = sky2_next_rx(sky2);
1119 le->addr = cpu_to_le32(upper_32_bits(map));
1120 le->opcode = OP_ADDR64 | HW_OWNER;
1123 le = sky2_next_rx(sky2);
1124 le->addr = cpu_to_le32(lower_32_bits(map));
1125 le->length = cpu_to_le16(len);
1126 le->opcode = op | HW_OWNER;
1129 /* Build description to hardware for one possibly fragmented skb */
1130 static void sky2_rx_submit(struct sky2_port *sky2,
1131 const struct rx_ring_info *re)
1135 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
1137 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
1138 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
1142 static int sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
1145 struct sk_buff *skb = re->skb;
1148 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
1149 if (pci_dma_mapping_error(pdev, re->data_addr))
1152 dma_unmap_len_set(re, data_size, size);
1154 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1155 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1157 re->frag_addr[i] = pci_map_page(pdev, frag->page,
1160 PCI_DMA_FROMDEVICE);
1162 if (pci_dma_mapping_error(pdev, re->frag_addr[i]))
1163 goto map_page_error;
1169 pci_unmap_page(pdev, re->frag_addr[i],
1170 skb_shinfo(skb)->frags[i].size,
1171 PCI_DMA_FROMDEVICE);
1174 pci_unmap_single(pdev, re->data_addr, dma_unmap_len(re, data_size),
1175 PCI_DMA_FROMDEVICE);
1178 if (net_ratelimit())
1179 dev_warn(&pdev->dev, "%s: rx mapping error\n",
1184 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1186 struct sk_buff *skb = re->skb;
1189 pci_unmap_single(pdev, re->data_addr, dma_unmap_len(re, data_size),
1190 PCI_DMA_FROMDEVICE);
1192 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1193 pci_unmap_page(pdev, re->frag_addr[i],
1194 skb_shinfo(skb)->frags[i].size,
1195 PCI_DMA_FROMDEVICE);
1198 /* Tell chip where to start receive checksum.
1199 * Actually has two checksums, but set both same to avoid possible byte
1202 static void rx_set_checksum(struct sky2_port *sky2)
1204 struct sky2_rx_le *le = sky2_next_rx(sky2);
1206 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1208 le->opcode = OP_TCPSTART | HW_OWNER;
1210 sky2_write32(sky2->hw,
1211 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1212 (sky2->netdev->features & NETIF_F_RXCSUM)
1213 ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
1216 /* Enable/disable receive hash calculation (RSS) */
1217 static void rx_set_rss(struct net_device *dev, u32 features)
1219 struct sky2_port *sky2 = netdev_priv(dev);
1220 struct sky2_hw *hw = sky2->hw;
1223 /* Supports IPv6 and other modes */
1224 if (hw->flags & SKY2_HW_NEW_LE) {
1226 sky2_write32(hw, SK_REG(sky2->port, RSS_CFG), HASH_ALL);
1229 /* Program RSS initial values */
1230 if (features & NETIF_F_RXHASH) {
1233 get_random_bytes(key, nkeys * sizeof(u32));
1234 for (i = 0; i < nkeys; i++)
1235 sky2_write32(hw, SK_REG(sky2->port, RSS_KEY + i * 4),
1238 /* Need to turn on (undocumented) flag to make hashing work */
1239 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T),
1242 sky2_write32(hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1243 BMU_ENA_RX_RSS_HASH);
1245 sky2_write32(hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1246 BMU_DIS_RX_RSS_HASH);
1250 * The RX Stop command will not work for Yukon-2 if the BMU does not
1251 * reach the end of packet and since we can't make sure that we have
1252 * incoming data, we must reset the BMU while it is not doing a DMA
1253 * transfer. Since it is possible that the RX path is still active,
1254 * the RX RAM buffer will be stopped first, so any possible incoming
1255 * data will not trigger a DMA. After the RAM buffer is stopped, the
1256 * BMU is polled until any DMA in progress is ended and only then it
1259 static void sky2_rx_stop(struct sky2_port *sky2)
1261 struct sky2_hw *hw = sky2->hw;
1262 unsigned rxq = rxqaddr[sky2->port];
1265 /* disable the RAM Buffer receive queue */
1266 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1268 for (i = 0; i < 0xffff; i++)
1269 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1270 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1273 netdev_warn(sky2->netdev, "receiver stop failed\n");
1275 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1277 /* reset the Rx prefetch unit */
1278 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1282 /* Clean out receive buffer area, assumes receiver hardware stopped */
1283 static void sky2_rx_clean(struct sky2_port *sky2)
1287 memset(sky2->rx_le, 0, RX_LE_BYTES);
1288 for (i = 0; i < sky2->rx_pending; i++) {
1289 struct rx_ring_info *re = sky2->rx_ring + i;
1292 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1299 /* Basic MII support */
1300 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1302 struct mii_ioctl_data *data = if_mii(ifr);
1303 struct sky2_port *sky2 = netdev_priv(dev);
1304 struct sky2_hw *hw = sky2->hw;
1305 int err = -EOPNOTSUPP;
1307 if (!netif_running(dev))
1308 return -ENODEV; /* Phy still in reset */
1312 data->phy_id = PHY_ADDR_MARV;
1318 spin_lock_bh(&sky2->phy_lock);
1319 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1320 spin_unlock_bh(&sky2->phy_lock);
1322 data->val_out = val;
1327 spin_lock_bh(&sky2->phy_lock);
1328 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1330 spin_unlock_bh(&sky2->phy_lock);
1336 #define SKY2_VLAN_OFFLOADS (NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO)
1338 static void sky2_vlan_mode(struct net_device *dev, u32 features)
1340 struct sky2_port *sky2 = netdev_priv(dev);
1341 struct sky2_hw *hw = sky2->hw;
1342 u16 port = sky2->port;
1344 if (features & NETIF_F_HW_VLAN_RX)
1345 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1348 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1351 if (features & NETIF_F_HW_VLAN_TX) {
1352 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1355 dev->vlan_features |= SKY2_VLAN_OFFLOADS;
1357 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1360 /* Can't do transmit offload of vlan without hw vlan */
1361 dev->vlan_features &= ~SKY2_VLAN_OFFLOADS;
1365 /* Amount of required worst case padding in rx buffer */
1366 static inline unsigned sky2_rx_pad(const struct sky2_hw *hw)
1368 return (hw->flags & SKY2_HW_RAM_BUFFER) ? 8 : 2;
1372 * Allocate an skb for receiving. If the MTU is large enough
1373 * make the skb non-linear with a fragment list of pages.
1375 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2)
1377 struct sk_buff *skb;
1380 skb = netdev_alloc_skb(sky2->netdev,
1381 sky2->rx_data_size + sky2_rx_pad(sky2->hw));
1385 if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) {
1386 unsigned char *start;
1388 * Workaround for a bug in FIFO that cause hang
1389 * if the FIFO if the receive buffer is not 64 byte aligned.
1390 * The buffer returned from netdev_alloc_skb is
1391 * aligned except if slab debugging is enabled.
1393 start = PTR_ALIGN(skb->data, 8);
1394 skb_reserve(skb, start - skb->data);
1396 skb_reserve(skb, NET_IP_ALIGN);
1398 for (i = 0; i < sky2->rx_nfrags; i++) {
1399 struct page *page = alloc_page(GFP_ATOMIC);
1403 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1413 static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1415 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1418 static int sky2_alloc_rx_skbs(struct sky2_port *sky2)
1420 struct sky2_hw *hw = sky2->hw;
1423 sky2->rx_data_size = sky2_get_rx_data_size(sky2);
1426 for (i = 0; i < sky2->rx_pending; i++) {
1427 struct rx_ring_info *re = sky2->rx_ring + i;
1429 re->skb = sky2_rx_alloc(sky2);
1433 if (sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size)) {
1434 dev_kfree_skb(re->skb);
1443 * Setup receiver buffer pool.
1444 * Normal case this ends up creating one list element for skb
1445 * in the receive ring. Worst case if using large MTU and each
1446 * allocation falls on a different 64 bit region, that results
1447 * in 6 list elements per ring entry.
1448 * One element is used for checksum enable/disable, and one
1449 * extra to avoid wrap.
1451 static void sky2_rx_start(struct sky2_port *sky2)
1453 struct sky2_hw *hw = sky2->hw;
1454 struct rx_ring_info *re;
1455 unsigned rxq = rxqaddr[sky2->port];
1458 sky2->rx_put = sky2->rx_next = 0;
1461 /* On PCI express lowering the watermark gives better performance */
1462 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
1463 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1465 /* These chips have no ram buffer?
1466 * MAC Rx RAM Read is controlled by hardware */
1467 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1468 hw->chip_rev > CHIP_REV_YU_EC_U_A0)
1469 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1471 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1473 if (!(hw->flags & SKY2_HW_NEW_LE))
1474 rx_set_checksum(sky2);
1476 if (!(hw->flags & SKY2_HW_RSS_BROKEN))
1477 rx_set_rss(sky2->netdev, sky2->netdev->features);
1479 /* submit Rx ring */
1480 for (i = 0; i < sky2->rx_pending; i++) {
1481 re = sky2->rx_ring + i;
1482 sky2_rx_submit(sky2, re);
1486 * The receiver hangs if it receives frames larger than the
1487 * packet buffer. As a workaround, truncate oversize frames, but
1488 * the register is limited to 9 bits, so if you do frames > 2052
1489 * you better get the MTU right!
1491 thresh = sky2_get_rx_threshold(sky2);
1493 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1495 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1496 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1499 /* Tell chip about available buffers */
1500 sky2_rx_update(sky2, rxq);
1502 if (hw->chip_id == CHIP_ID_YUKON_EX ||
1503 hw->chip_id == CHIP_ID_YUKON_SUPR) {
1505 * Disable flushing of non ASF packets;
1506 * must be done after initializing the BMUs;
1507 * drivers without ASF support should do this too, otherwise
1508 * it may happen that they cannot run on ASF devices;
1509 * remember that the MAC FIFO isn't reset during initialization.
1511 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_MACSEC_FLUSH_OFF);
1514 if (hw->chip_id >= CHIP_ID_YUKON_SUPR) {
1515 /* Enable RX Home Address & Routing Header checksum fix */
1516 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_FL_CTRL),
1517 RX_IPV6_SA_MOB_ENA | RX_IPV6_DA_MOB_ENA);
1519 /* Enable TX Home Address & Routing Header checksum fix */
1520 sky2_write32(hw, Q_ADDR(txqaddr[sky2->port], Q_TEST),
1521 TBMU_TEST_HOME_ADD_FIX_EN | TBMU_TEST_ROUTING_ADD_FIX_EN);
1525 static int sky2_alloc_buffers(struct sky2_port *sky2)
1527 struct sky2_hw *hw = sky2->hw;
1529 /* must be power of 2 */
1530 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1531 sky2->tx_ring_size *
1532 sizeof(struct sky2_tx_le),
1537 sky2->tx_ring = kcalloc(sky2->tx_ring_size, sizeof(struct tx_ring_info),
1542 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1546 memset(sky2->rx_le, 0, RX_LE_BYTES);
1548 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1553 return sky2_alloc_rx_skbs(sky2);
1558 static void sky2_free_buffers(struct sky2_port *sky2)
1560 struct sky2_hw *hw = sky2->hw;
1562 sky2_rx_clean(sky2);
1565 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1566 sky2->rx_le, sky2->rx_le_map);
1570 pci_free_consistent(hw->pdev,
1571 sky2->tx_ring_size * sizeof(struct sky2_tx_le),
1572 sky2->tx_le, sky2->tx_le_map);
1575 kfree(sky2->tx_ring);
1576 kfree(sky2->rx_ring);
1578 sky2->tx_ring = NULL;
1579 sky2->rx_ring = NULL;
1582 static void sky2_hw_up(struct sky2_port *sky2)
1584 struct sky2_hw *hw = sky2->hw;
1585 unsigned port = sky2->port;
1588 struct net_device *otherdev = hw->dev[sky2->port^1];
1593 * On dual port PCI-X card, there is an problem where status
1594 * can be received out of order due to split transactions
1596 if (otherdev && netif_running(otherdev) &&
1597 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1600 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1601 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1602 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1605 sky2_mac_init(hw, port);
1607 /* Register is number of 4K blocks on internal RAM buffer. */
1608 ramsize = sky2_read8(hw, B2_E_0) * 4;
1612 netdev_dbg(sky2->netdev, "ram buffer %dK\n", ramsize);
1614 rxspace = ramsize / 2;
1616 rxspace = 8 + (2*(ramsize - 16))/3;
1618 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1619 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1621 /* Make sure SyncQ is disabled */
1622 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1626 sky2_qset(hw, txqaddr[port]);
1628 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1629 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1630 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1632 /* Set almost empty threshold */
1633 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1634 hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1635 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1637 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1638 sky2->tx_ring_size - 1);
1640 sky2_vlan_mode(sky2->netdev, sky2->netdev->features);
1641 netdev_update_features(sky2->netdev);
1643 sky2_rx_start(sky2);
1646 /* Bring up network interface. */
1647 static int sky2_up(struct net_device *dev)
1649 struct sky2_port *sky2 = netdev_priv(dev);
1650 struct sky2_hw *hw = sky2->hw;
1651 unsigned port = sky2->port;
1655 netif_carrier_off(dev);
1657 err = sky2_alloc_buffers(sky2);
1663 /* Enable interrupts from phy/mac for port */
1664 imask = sky2_read32(hw, B0_IMSK);
1665 imask |= portirq_msk[port];
1666 sky2_write32(hw, B0_IMSK, imask);
1667 sky2_read32(hw, B0_IMSK);
1669 netif_info(sky2, ifup, dev, "enabling interface\n");
1674 sky2_free_buffers(sky2);
1678 /* Modular subtraction in ring */
1679 static inline int tx_inuse(const struct sky2_port *sky2)
1681 return (sky2->tx_prod - sky2->tx_cons) & (sky2->tx_ring_size - 1);
1684 /* Number of list elements available for next tx */
1685 static inline int tx_avail(const struct sky2_port *sky2)
1687 return sky2->tx_pending - tx_inuse(sky2);
1690 /* Estimate of number of transmit list elements required */
1691 static unsigned tx_le_req(const struct sk_buff *skb)
1695 count = (skb_shinfo(skb)->nr_frags + 1)
1696 * (sizeof(dma_addr_t) / sizeof(u32));
1698 if (skb_is_gso(skb))
1700 else if (sizeof(dma_addr_t) == sizeof(u32))
1701 ++count; /* possible vlan */
1703 if (skb->ip_summed == CHECKSUM_PARTIAL)
1709 static void sky2_tx_unmap(struct pci_dev *pdev, struct tx_ring_info *re)
1711 if (re->flags & TX_MAP_SINGLE)
1712 pci_unmap_single(pdev, dma_unmap_addr(re, mapaddr),
1713 dma_unmap_len(re, maplen),
1715 else if (re->flags & TX_MAP_PAGE)
1716 pci_unmap_page(pdev, dma_unmap_addr(re, mapaddr),
1717 dma_unmap_len(re, maplen),
1723 * Put one packet in ring for transmit.
1724 * A single packet can generate multiple list elements, and
1725 * the number of ring elements will probably be less than the number
1726 * of list elements used.
1728 static netdev_tx_t sky2_xmit_frame(struct sk_buff *skb,
1729 struct net_device *dev)
1731 struct sky2_port *sky2 = netdev_priv(dev);
1732 struct sky2_hw *hw = sky2->hw;
1733 struct sky2_tx_le *le = NULL;
1734 struct tx_ring_info *re;
1742 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1743 return NETDEV_TX_BUSY;
1745 len = skb_headlen(skb);
1746 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1748 if (pci_dma_mapping_error(hw->pdev, mapping))
1751 slot = sky2->tx_prod;
1752 netif_printk(sky2, tx_queued, KERN_DEBUG, dev,
1753 "tx queued, slot %u, len %d\n", slot, skb->len);
1755 /* Send high bits if needed */
1756 upper = upper_32_bits(mapping);
1757 if (upper != sky2->tx_last_upper) {
1758 le = get_tx_le(sky2, &slot);
1759 le->addr = cpu_to_le32(upper);
1760 sky2->tx_last_upper = upper;
1761 le->opcode = OP_ADDR64 | HW_OWNER;
1764 /* Check for TCP Segmentation Offload */
1765 mss = skb_shinfo(skb)->gso_size;
1768 if (!(hw->flags & SKY2_HW_NEW_LE))
1769 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1771 if (mss != sky2->tx_last_mss) {
1772 le = get_tx_le(sky2, &slot);
1773 le->addr = cpu_to_le32(mss);
1775 if (hw->flags & SKY2_HW_NEW_LE)
1776 le->opcode = OP_MSS | HW_OWNER;
1778 le->opcode = OP_LRGLEN | HW_OWNER;
1779 sky2->tx_last_mss = mss;
1785 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1786 if (vlan_tx_tag_present(skb)) {
1788 le = get_tx_le(sky2, &slot);
1790 le->opcode = OP_VLAN|HW_OWNER;
1792 le->opcode |= OP_VLAN;
1793 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1797 /* Handle TCP checksum offload */
1798 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1799 /* On Yukon EX (some versions) encoding change. */
1800 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1801 ctrl |= CALSUM; /* auto checksum */
1803 const unsigned offset = skb_transport_offset(skb);
1806 tcpsum = offset << 16; /* sum start */
1807 tcpsum |= offset + skb->csum_offset; /* sum write */
1809 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1810 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1813 if (tcpsum != sky2->tx_tcpsum) {
1814 sky2->tx_tcpsum = tcpsum;
1816 le = get_tx_le(sky2, &slot);
1817 le->addr = cpu_to_le32(tcpsum);
1818 le->length = 0; /* initial checksum value */
1819 le->ctrl = 1; /* one packet */
1820 le->opcode = OP_TCPLISW | HW_OWNER;
1825 re = sky2->tx_ring + slot;
1826 re->flags = TX_MAP_SINGLE;
1827 dma_unmap_addr_set(re, mapaddr, mapping);
1828 dma_unmap_len_set(re, maplen, len);
1830 le = get_tx_le(sky2, &slot);
1831 le->addr = cpu_to_le32(lower_32_bits(mapping));
1832 le->length = cpu_to_le16(len);
1834 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1837 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1838 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1840 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1841 frag->size, PCI_DMA_TODEVICE);
1843 if (pci_dma_mapping_error(hw->pdev, mapping))
1844 goto mapping_unwind;
1846 upper = upper_32_bits(mapping);
1847 if (upper != sky2->tx_last_upper) {
1848 le = get_tx_le(sky2, &slot);
1849 le->addr = cpu_to_le32(upper);
1850 sky2->tx_last_upper = upper;
1851 le->opcode = OP_ADDR64 | HW_OWNER;
1854 re = sky2->tx_ring + slot;
1855 re->flags = TX_MAP_PAGE;
1856 dma_unmap_addr_set(re, mapaddr, mapping);
1857 dma_unmap_len_set(re, maplen, frag->size);
1859 le = get_tx_le(sky2, &slot);
1860 le->addr = cpu_to_le32(lower_32_bits(mapping));
1861 le->length = cpu_to_le16(frag->size);
1863 le->opcode = OP_BUFFER | HW_OWNER;
1869 sky2->tx_prod = slot;
1871 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1872 netif_stop_queue(dev);
1874 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1876 return NETDEV_TX_OK;
1879 for (i = sky2->tx_prod; i != slot; i = RING_NEXT(i, sky2->tx_ring_size)) {
1880 re = sky2->tx_ring + i;
1882 sky2_tx_unmap(hw->pdev, re);
1886 if (net_ratelimit())
1887 dev_warn(&hw->pdev->dev, "%s: tx mapping error\n", dev->name);
1889 return NETDEV_TX_OK;
1893 * Free ring elements from starting at tx_cons until "done"
1896 * 1. The hardware will tell us about partial completion of multi-part
1897 * buffers so make sure not to free skb to early.
1898 * 2. This may run in parallel start_xmit because the it only
1899 * looks at the tail of the queue of FIFO (tx_cons), not
1900 * the head (tx_prod)
1902 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1904 struct net_device *dev = sky2->netdev;
1907 BUG_ON(done >= sky2->tx_ring_size);
1909 for (idx = sky2->tx_cons; idx != done;
1910 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
1911 struct tx_ring_info *re = sky2->tx_ring + idx;
1912 struct sk_buff *skb = re->skb;
1914 sky2_tx_unmap(sky2->hw->pdev, re);
1917 netif_printk(sky2, tx_done, KERN_DEBUG, dev,
1918 "tx done %u\n", idx);
1920 u64_stats_update_begin(&sky2->tx_stats.syncp);
1921 ++sky2->tx_stats.packets;
1922 sky2->tx_stats.bytes += skb->len;
1923 u64_stats_update_end(&sky2->tx_stats.syncp);
1926 dev_kfree_skb_any(skb);
1928 sky2->tx_next = RING_NEXT(idx, sky2->tx_ring_size);
1932 sky2->tx_cons = idx;
1936 static void sky2_tx_reset(struct sky2_hw *hw, unsigned port)
1938 /* Disable Force Sync bit and Enable Alloc bit */
1939 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1940 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1942 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1943 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1944 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1946 /* Reset the PCI FIFO of the async Tx queue */
1947 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1948 BMU_RST_SET | BMU_FIFO_RST);
1950 /* Reset the Tx prefetch units */
1951 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1954 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1955 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1958 static void sky2_hw_down(struct sky2_port *sky2)
1960 struct sky2_hw *hw = sky2->hw;
1961 unsigned port = sky2->port;
1964 /* Force flow control off */
1965 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1967 /* Stop transmitter */
1968 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1969 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1971 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1972 RB_RST_SET | RB_DIS_OP_MD);
1974 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1975 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1976 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1978 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1980 /* Workaround shared GMAC reset */
1981 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 &&
1982 port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1983 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1985 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1987 /* Force any delayed status interrrupt and NAPI */
1988 sky2_write32(hw, STAT_LEV_TIMER_CNT, 0);
1989 sky2_write32(hw, STAT_TX_TIMER_CNT, 0);
1990 sky2_write32(hw, STAT_ISR_TIMER_CNT, 0);
1991 sky2_read8(hw, STAT_ISR_TIMER_CTRL);
1995 spin_lock_bh(&sky2->phy_lock);
1996 sky2_phy_power_down(hw, port);
1997 spin_unlock_bh(&sky2->phy_lock);
1999 sky2_tx_reset(hw, port);
2001 /* Free any pending frames stuck in HW queue */
2002 sky2_tx_complete(sky2, sky2->tx_prod);
2005 /* Network shutdown */
2006 static int sky2_down(struct net_device *dev)
2008 struct sky2_port *sky2 = netdev_priv(dev);
2009 struct sky2_hw *hw = sky2->hw;
2011 /* Never really got started! */
2015 netif_info(sky2, ifdown, dev, "disabling interface\n");
2017 /* Disable port IRQ */
2018 sky2_write32(hw, B0_IMSK,
2019 sky2_read32(hw, B0_IMSK) & ~portirq_msk[sky2->port]);
2020 sky2_read32(hw, B0_IMSK);
2022 synchronize_irq(hw->pdev->irq);
2023 napi_synchronize(&hw->napi);
2027 sky2_free_buffers(sky2);
2032 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
2034 if (hw->flags & SKY2_HW_FIBRE_PHY)
2037 if (!(hw->flags & SKY2_HW_GIGABIT)) {
2038 if (aux & PHY_M_PS_SPEED_100)
2044 switch (aux & PHY_M_PS_SPEED_MSK) {
2045 case PHY_M_PS_SPEED_1000:
2047 case PHY_M_PS_SPEED_100:
2054 static void sky2_link_up(struct sky2_port *sky2)
2056 struct sky2_hw *hw = sky2->hw;
2057 unsigned port = sky2->port;
2058 static const char *fc_name[] = {
2065 sky2_enable_rx_tx(sky2);
2067 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
2069 netif_carrier_on(sky2->netdev);
2071 mod_timer(&hw->watchdog_timer, jiffies + 1);
2073 /* Turn on link LED */
2074 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
2075 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
2077 netif_info(sky2, link, sky2->netdev,
2078 "Link is up at %d Mbps, %s duplex, flow control %s\n",
2080 sky2->duplex == DUPLEX_FULL ? "full" : "half",
2081 fc_name[sky2->flow_status]);
2084 static void sky2_link_down(struct sky2_port *sky2)
2086 struct sky2_hw *hw = sky2->hw;
2087 unsigned port = sky2->port;
2090 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
2092 reg = gma_read16(hw, port, GM_GP_CTRL);
2093 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
2094 gma_write16(hw, port, GM_GP_CTRL, reg);
2096 netif_carrier_off(sky2->netdev);
2098 /* Turn off link LED */
2099 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
2101 netif_info(sky2, link, sky2->netdev, "Link is down\n");
2103 sky2_phy_init(hw, port);
2106 static enum flow_control sky2_flow(int rx, int tx)
2109 return tx ? FC_BOTH : FC_RX;
2111 return tx ? FC_TX : FC_NONE;
2114 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
2116 struct sky2_hw *hw = sky2->hw;
2117 unsigned port = sky2->port;
2120 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
2121 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
2122 if (lpa & PHY_M_AN_RF) {
2123 netdev_err(sky2->netdev, "remote fault\n");
2127 if (!(aux & PHY_M_PS_SPDUP_RES)) {
2128 netdev_err(sky2->netdev, "speed/duplex mismatch\n");
2132 sky2->speed = sky2_phy_speed(hw, aux);
2133 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2135 /* Since the pause result bits seem to in different positions on
2136 * different chips. look at registers.
2138 if (hw->flags & SKY2_HW_FIBRE_PHY) {
2139 /* Shift for bits in fiber PHY */
2140 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
2141 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
2143 if (advert & ADVERTISE_1000XPAUSE)
2144 advert |= ADVERTISE_PAUSE_CAP;
2145 if (advert & ADVERTISE_1000XPSE_ASYM)
2146 advert |= ADVERTISE_PAUSE_ASYM;
2147 if (lpa & LPA_1000XPAUSE)
2148 lpa |= LPA_PAUSE_CAP;
2149 if (lpa & LPA_1000XPAUSE_ASYM)
2150 lpa |= LPA_PAUSE_ASYM;
2153 sky2->flow_status = FC_NONE;
2154 if (advert & ADVERTISE_PAUSE_CAP) {
2155 if (lpa & LPA_PAUSE_CAP)
2156 sky2->flow_status = FC_BOTH;
2157 else if (advert & ADVERTISE_PAUSE_ASYM)
2158 sky2->flow_status = FC_RX;
2159 } else if (advert & ADVERTISE_PAUSE_ASYM) {
2160 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
2161 sky2->flow_status = FC_TX;
2164 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000 &&
2165 !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
2166 sky2->flow_status = FC_NONE;
2168 if (sky2->flow_status & FC_TX)
2169 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2171 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2176 /* Interrupt from PHY */
2177 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
2179 struct net_device *dev = hw->dev[port];
2180 struct sky2_port *sky2 = netdev_priv(dev);
2181 u16 istatus, phystat;
2183 if (!netif_running(dev))
2186 spin_lock(&sky2->phy_lock);
2187 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2188 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2190 netif_info(sky2, intr, sky2->netdev, "phy interrupt status 0x%x 0x%x\n",
2193 if (istatus & PHY_M_IS_AN_COMPL) {
2194 if (sky2_autoneg_done(sky2, phystat) == 0 &&
2195 !netif_carrier_ok(dev))
2200 if (istatus & PHY_M_IS_LSP_CHANGE)
2201 sky2->speed = sky2_phy_speed(hw, phystat);
2203 if (istatus & PHY_M_IS_DUP_CHANGE)
2205 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2207 if (istatus & PHY_M_IS_LST_CHANGE) {
2208 if (phystat & PHY_M_PS_LINK_UP)
2211 sky2_link_down(sky2);
2214 spin_unlock(&sky2->phy_lock);
2217 /* Special quick link interrupt (Yukon-2 Optima only) */
2218 static void sky2_qlink_intr(struct sky2_hw *hw)
2220 struct sky2_port *sky2 = netdev_priv(hw->dev[0]);
2225 imask = sky2_read32(hw, B0_IMSK);
2226 imask &= ~Y2_IS_PHY_QLNK;
2227 sky2_write32(hw, B0_IMSK, imask);
2229 /* reset PHY Link Detect */
2230 phy = sky2_pci_read16(hw, PSM_CONFIG_REG4);
2231 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2232 sky2_pci_write16(hw, PSM_CONFIG_REG4, phy | 1);
2233 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2238 /* Transmit timeout is only called if we are running, carrier is up
2239 * and tx queue is full (stopped).
2241 static void sky2_tx_timeout(struct net_device *dev)
2243 struct sky2_port *sky2 = netdev_priv(dev);
2244 struct sky2_hw *hw = sky2->hw;
2246 netif_err(sky2, timer, dev, "tx timeout\n");
2248 netdev_printk(KERN_DEBUG, dev, "transmit ring %u .. %u report=%u done=%u\n",
2249 sky2->tx_cons, sky2->tx_prod,
2250 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
2251 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
2253 /* can't restart safely under softirq */
2254 schedule_work(&hw->restart_work);
2257 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
2259 struct sky2_port *sky2 = netdev_priv(dev);
2260 struct sky2_hw *hw = sky2->hw;
2261 unsigned port = sky2->port;
2266 /* MTU size outside the spec */
2267 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2270 /* MTU > 1500 on yukon FE and FE+ not allowed */
2271 if (new_mtu > ETH_DATA_LEN &&
2272 (hw->chip_id == CHIP_ID_YUKON_FE ||
2273 hw->chip_id == CHIP_ID_YUKON_FE_P))
2276 if (!netif_running(dev)) {
2278 netdev_update_features(dev);
2282 imask = sky2_read32(hw, B0_IMSK);
2283 sky2_write32(hw, B0_IMSK, 0);
2285 dev->trans_start = jiffies; /* prevent tx timeout */
2286 napi_disable(&hw->napi);
2287 netif_tx_disable(dev);
2289 synchronize_irq(hw->pdev->irq);
2291 if (!(hw->flags & SKY2_HW_RAM_BUFFER))
2292 sky2_set_tx_stfwd(hw, port);
2294 ctl = gma_read16(hw, port, GM_GP_CTRL);
2295 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2297 sky2_rx_clean(sky2);
2300 netdev_update_features(dev);
2302 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
2303 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
2305 if (dev->mtu > ETH_DATA_LEN)
2306 mode |= GM_SMOD_JUMBO_ENA;
2308 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2310 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2312 err = sky2_alloc_rx_skbs(sky2);
2314 sky2_rx_start(sky2);
2316 sky2_rx_clean(sky2);
2317 sky2_write32(hw, B0_IMSK, imask);
2319 sky2_read32(hw, B0_Y2_SP_LISR);
2320 napi_enable(&hw->napi);
2325 gma_write16(hw, port, GM_GP_CTRL, ctl);
2327 netif_wake_queue(dev);
2333 /* For small just reuse existing skb for next receive */
2334 static struct sk_buff *receive_copy(struct sky2_port *sky2,
2335 const struct rx_ring_info *re,
2338 struct sk_buff *skb;
2340 skb = netdev_alloc_skb_ip_align(sky2->netdev, length);
2342 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2343 length, PCI_DMA_FROMDEVICE);
2344 skb_copy_from_linear_data(re->skb, skb->data, length);
2345 skb->ip_summed = re->skb->ip_summed;
2346 skb->csum = re->skb->csum;
2347 skb->rxhash = re->skb->rxhash;
2349 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2350 length, PCI_DMA_FROMDEVICE);
2351 re->skb->rxhash = 0;
2352 re->skb->ip_summed = CHECKSUM_NONE;
2353 skb_put(skb, length);
2358 /* Adjust length of skb with fragments to match received data */
2359 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2360 unsigned int length)
2365 /* put header into skb */
2366 size = min(length, hdr_space);
2371 num_frags = skb_shinfo(skb)->nr_frags;
2372 for (i = 0; i < num_frags; i++) {
2373 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2376 /* don't need this page */
2377 __free_page(frag->page);
2378 --skb_shinfo(skb)->nr_frags;
2380 size = min(length, (unsigned) PAGE_SIZE);
2383 skb->data_len += size;
2384 skb->truesize += size;
2391 /* Normal packet - take skb from ring element and put in a new one */
2392 static struct sk_buff *receive_new(struct sky2_port *sky2,
2393 struct rx_ring_info *re,
2394 unsigned int length)
2396 struct sk_buff *skb;
2397 struct rx_ring_info nre;
2398 unsigned hdr_space = sky2->rx_data_size;
2400 nre.skb = sky2_rx_alloc(sky2);
2401 if (unlikely(!nre.skb))
2404 if (sky2_rx_map_skb(sky2->hw->pdev, &nre, hdr_space))
2408 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2409 prefetch(skb->data);
2412 if (skb_shinfo(skb)->nr_frags)
2413 skb_put_frags(skb, hdr_space, length);
2415 skb_put(skb, length);
2419 dev_kfree_skb(nre.skb);
2425 * Receive one packet.
2426 * For larger packets, get new buffer.
2428 static struct sk_buff *sky2_receive(struct net_device *dev,
2429 u16 length, u32 status)
2431 struct sky2_port *sky2 = netdev_priv(dev);
2432 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2433 struct sk_buff *skb = NULL;
2434 u16 count = (status & GMR_FS_LEN) >> 16;
2436 if (status & GMR_FS_VLAN)
2437 count -= VLAN_HLEN; /* Account for vlan tag */
2439 netif_printk(sky2, rx_status, KERN_DEBUG, dev,
2440 "rx slot %u status 0x%x len %d\n",
2441 sky2->rx_next, status, length);
2443 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2444 prefetch(sky2->rx_ring + sky2->rx_next);
2446 /* This chip has hardware problems that generates bogus status.
2447 * So do only marginal checking and expect higher level protocols
2448 * to handle crap frames.
2450 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2451 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2455 if (status & GMR_FS_ANY_ERR)
2458 if (!(status & GMR_FS_RX_OK))
2461 /* if length reported by DMA does not match PHY, packet was truncated */
2462 if (length != count)
2466 if (length < copybreak)
2467 skb = receive_copy(sky2, re, length);
2469 skb = receive_new(sky2, re, length);
2471 dev->stats.rx_dropped += (skb == NULL);
2474 sky2_rx_submit(sky2, re);
2479 ++dev->stats.rx_errors;
2481 if (net_ratelimit())
2482 netif_info(sky2, rx_err, dev,
2483 "rx error, status 0x%x length %d\n", status, length);
2488 /* Transmit complete */
2489 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2491 struct sky2_port *sky2 = netdev_priv(dev);
2493 if (netif_running(dev)) {
2494 sky2_tx_complete(sky2, last);
2496 /* Wake unless it's detached, and called e.g. from sky2_down() */
2497 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
2498 netif_wake_queue(dev);
2502 static inline void sky2_skb_rx(const struct sky2_port *sky2,
2503 u32 status, struct sk_buff *skb)
2505 if (status & GMR_FS_VLAN)
2506 __vlan_hwaccel_put_tag(skb, be16_to_cpu(sky2->rx_tag));
2508 if (skb->ip_summed == CHECKSUM_NONE)
2509 netif_receive_skb(skb);
2511 napi_gro_receive(&sky2->hw->napi, skb);
2514 static inline void sky2_rx_done(struct sky2_hw *hw, unsigned port,
2515 unsigned packets, unsigned bytes)
2517 struct net_device *dev = hw->dev[port];
2518 struct sky2_port *sky2 = netdev_priv(dev);
2523 u64_stats_update_begin(&sky2->rx_stats.syncp);
2524 sky2->rx_stats.packets += packets;
2525 sky2->rx_stats.bytes += bytes;
2526 u64_stats_update_end(&sky2->rx_stats.syncp);
2528 dev->last_rx = jiffies;
2529 sky2_rx_update(netdev_priv(dev), rxqaddr[port]);
2532 static void sky2_rx_checksum(struct sky2_port *sky2, u32 status)
2534 /* If this happens then driver assuming wrong format for chip type */
2535 BUG_ON(sky2->hw->flags & SKY2_HW_NEW_LE);
2537 /* Both checksum counters are programmed to start at
2538 * the same offset, so unless there is a problem they
2539 * should match. This failure is an early indication that
2540 * hardware receive checksumming won't work.
2542 if (likely((u16)(status >> 16) == (u16)status)) {
2543 struct sk_buff *skb = sky2->rx_ring[sky2->rx_next].skb;
2544 skb->ip_summed = CHECKSUM_COMPLETE;
2545 skb->csum = le16_to_cpu(status);
2547 dev_notice(&sky2->hw->pdev->dev,
2548 "%s: receive checksum problem (status = %#x)\n",
2549 sky2->netdev->name, status);
2551 /* Disable checksum offload
2552 * It will be reenabled on next ndo_set_features, but if it's
2553 * really broken, will get disabled again
2555 sky2->netdev->features &= ~NETIF_F_RXCSUM;
2556 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2561 static void sky2_rx_hash(struct sky2_port *sky2, u32 status)
2563 struct sk_buff *skb;
2565 skb = sky2->rx_ring[sky2->rx_next].skb;
2566 skb->rxhash = le32_to_cpu(status);
2569 /* Process status response ring */
2570 static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
2573 unsigned int total_bytes[2] = { 0 };
2574 unsigned int total_packets[2] = { 0 };
2578 struct sky2_port *sky2;
2579 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2581 struct net_device *dev;
2582 struct sk_buff *skb;
2585 u8 opcode = le->opcode;
2587 if (!(opcode & HW_OWNER))
2590 hw->st_idx = RING_NEXT(hw->st_idx, hw->st_size);
2592 port = le->css & CSS_LINK_BIT;
2593 dev = hw->dev[port];
2594 sky2 = netdev_priv(dev);
2595 length = le16_to_cpu(le->length);
2596 status = le32_to_cpu(le->status);
2599 switch (opcode & ~HW_OWNER) {
2601 total_packets[port]++;
2602 total_bytes[port] += length;
2604 skb = sky2_receive(dev, length, status);
2608 /* This chip reports checksum status differently */
2609 if (hw->flags & SKY2_HW_NEW_LE) {
2610 if ((dev->features & NETIF_F_RXCSUM) &&
2611 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2612 (le->css & CSS_TCPUDPCSOK))
2613 skb->ip_summed = CHECKSUM_UNNECESSARY;
2615 skb->ip_summed = CHECKSUM_NONE;
2618 skb->protocol = eth_type_trans(skb, dev);
2620 sky2_skb_rx(sky2, status, skb);
2622 /* Stop after net poll weight */
2623 if (++work_done >= to_do)
2628 sky2->rx_tag = length;
2632 sky2->rx_tag = length;
2635 if (likely(dev->features & NETIF_F_RXCSUM))
2636 sky2_rx_checksum(sky2, status);
2640 sky2_rx_hash(sky2, status);
2644 /* TX index reports status for both ports */
2645 sky2_tx_done(hw->dev[0], status & 0xfff);
2647 sky2_tx_done(hw->dev[1],
2648 ((status >> 24) & 0xff)
2649 | (u16)(length & 0xf) << 8);
2653 if (net_ratelimit())
2654 pr_warning("unknown status opcode 0x%x\n", opcode);
2656 } while (hw->st_idx != idx);
2658 /* Fully processed status ring so clear irq */
2659 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2662 sky2_rx_done(hw, 0, total_packets[0], total_bytes[0]);
2663 sky2_rx_done(hw, 1, total_packets[1], total_bytes[1]);
2668 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2670 struct net_device *dev = hw->dev[port];
2672 if (net_ratelimit())
2673 netdev_info(dev, "hw error interrupt status 0x%x\n", status);
2675 if (status & Y2_IS_PAR_RD1) {
2676 if (net_ratelimit())
2677 netdev_err(dev, "ram data read parity error\n");
2679 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2682 if (status & Y2_IS_PAR_WR1) {
2683 if (net_ratelimit())
2684 netdev_err(dev, "ram data write parity error\n");
2686 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2689 if (status & Y2_IS_PAR_MAC1) {
2690 if (net_ratelimit())
2691 netdev_err(dev, "MAC parity error\n");
2692 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2695 if (status & Y2_IS_PAR_RX1) {
2696 if (net_ratelimit())
2697 netdev_err(dev, "RX parity error\n");
2698 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2701 if (status & Y2_IS_TCP_TXA1) {
2702 if (net_ratelimit())
2703 netdev_err(dev, "TCP segmentation error\n");
2704 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2708 static void sky2_hw_intr(struct sky2_hw *hw)
2710 struct pci_dev *pdev = hw->pdev;
2711 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2712 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2716 if (status & Y2_IS_TIST_OV)
2717 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2719 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2722 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2723 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2724 if (net_ratelimit())
2725 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
2728 sky2_pci_write16(hw, PCI_STATUS,
2729 pci_err | PCI_STATUS_ERROR_BITS);
2730 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2733 if (status & Y2_IS_PCI_EXP) {
2734 /* PCI-Express uncorrectable Error occurred */
2737 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2738 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2739 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2741 if (net_ratelimit())
2742 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
2744 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2745 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2748 if (status & Y2_HWE_L1_MASK)
2749 sky2_hw_error(hw, 0, status);
2751 if (status & Y2_HWE_L1_MASK)
2752 sky2_hw_error(hw, 1, status);
2755 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2757 struct net_device *dev = hw->dev[port];
2758 struct sky2_port *sky2 = netdev_priv(dev);
2759 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2761 netif_info(sky2, intr, dev, "mac interrupt status 0x%x\n", status);
2763 if (status & GM_IS_RX_CO_OV)
2764 gma_read16(hw, port, GM_RX_IRQ_SRC);
2766 if (status & GM_IS_TX_CO_OV)
2767 gma_read16(hw, port, GM_TX_IRQ_SRC);
2769 if (status & GM_IS_RX_FF_OR) {
2770 ++dev->stats.rx_fifo_errors;
2771 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2774 if (status & GM_IS_TX_FF_UR) {
2775 ++dev->stats.tx_fifo_errors;
2776 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2780 /* This should never happen it is a bug. */
2781 static void sky2_le_error(struct sky2_hw *hw, unsigned port, u16 q)
2783 struct net_device *dev = hw->dev[port];
2784 u16 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2786 dev_err(&hw->pdev->dev, "%s: descriptor error q=%#x get=%u put=%u\n",
2787 dev->name, (unsigned) q, (unsigned) idx,
2788 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2790 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2793 static int sky2_rx_hung(struct net_device *dev)
2795 struct sky2_port *sky2 = netdev_priv(dev);
2796 struct sky2_hw *hw = sky2->hw;
2797 unsigned port = sky2->port;
2798 unsigned rxq = rxqaddr[port];
2799 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2800 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2801 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2802 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2804 /* If idle and MAC or PCI is stuck */
2805 if (sky2->check.last == dev->last_rx &&
2806 ((mac_rp == sky2->check.mac_rp &&
2807 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2808 /* Check if the PCI RX hang */
2809 (fifo_rp == sky2->check.fifo_rp &&
2810 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2811 netdev_printk(KERN_DEBUG, dev,
2812 "hung mac %d:%d fifo %d (%d:%d)\n",
2813 mac_lev, mac_rp, fifo_lev,
2814 fifo_rp, sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2817 sky2->check.last = dev->last_rx;
2818 sky2->check.mac_rp = mac_rp;
2819 sky2->check.mac_lev = mac_lev;
2820 sky2->check.fifo_rp = fifo_rp;
2821 sky2->check.fifo_lev = fifo_lev;
2826 static void sky2_watchdog(unsigned long arg)
2828 struct sky2_hw *hw = (struct sky2_hw *) arg;
2830 /* Check for lost IRQ once a second */
2831 if (sky2_read32(hw, B0_ISRC)) {
2832 napi_schedule(&hw->napi);
2836 for (i = 0; i < hw->ports; i++) {
2837 struct net_device *dev = hw->dev[i];
2838 if (!netif_running(dev))
2842 /* For chips with Rx FIFO, check if stuck */
2843 if ((hw->flags & SKY2_HW_RAM_BUFFER) &&
2844 sky2_rx_hung(dev)) {
2845 netdev_info(dev, "receiver hang detected\n");
2846 schedule_work(&hw->restart_work);
2855 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
2858 /* Hardware/software error handling */
2859 static void sky2_err_intr(struct sky2_hw *hw, u32 status)
2861 if (net_ratelimit())
2862 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
2864 if (status & Y2_IS_HW_ERR)
2867 if (status & Y2_IS_IRQ_MAC1)
2868 sky2_mac_intr(hw, 0);
2870 if (status & Y2_IS_IRQ_MAC2)
2871 sky2_mac_intr(hw, 1);
2873 if (status & Y2_IS_CHK_RX1)
2874 sky2_le_error(hw, 0, Q_R1);
2876 if (status & Y2_IS_CHK_RX2)
2877 sky2_le_error(hw, 1, Q_R2);
2879 if (status & Y2_IS_CHK_TXA1)
2880 sky2_le_error(hw, 0, Q_XA1);
2882 if (status & Y2_IS_CHK_TXA2)
2883 sky2_le_error(hw, 1, Q_XA2);
2886 static int sky2_poll(struct napi_struct *napi, int work_limit)
2888 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
2889 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2893 if (unlikely(status & Y2_IS_ERROR))
2894 sky2_err_intr(hw, status);
2896 if (status & Y2_IS_IRQ_PHY1)
2897 sky2_phy_intr(hw, 0);
2899 if (status & Y2_IS_IRQ_PHY2)
2900 sky2_phy_intr(hw, 1);
2902 if (status & Y2_IS_PHY_QLNK)
2903 sky2_qlink_intr(hw);
2905 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
2906 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
2908 if (work_done >= work_limit)
2912 napi_complete(napi);
2913 sky2_read32(hw, B0_Y2_SP_LISR);
2919 static irqreturn_t sky2_intr(int irq, void *dev_id)
2921 struct sky2_hw *hw = dev_id;
2924 /* Reading this mask interrupts as side effect */
2925 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2926 if (status == 0 || status == ~0)
2929 prefetch(&hw->st_le[hw->st_idx]);
2931 napi_schedule(&hw->napi);
2936 #ifdef CONFIG_NET_POLL_CONTROLLER
2937 static void sky2_netpoll(struct net_device *dev)
2939 struct sky2_port *sky2 = netdev_priv(dev);
2941 napi_schedule(&sky2->hw->napi);
2945 /* Chip internal frequency for clock calculations */
2946 static u32 sky2_mhz(const struct sky2_hw *hw)
2948 switch (hw->chip_id) {
2949 case CHIP_ID_YUKON_EC:
2950 case CHIP_ID_YUKON_EC_U:
2951 case CHIP_ID_YUKON_EX:
2952 case CHIP_ID_YUKON_SUPR:
2953 case CHIP_ID_YUKON_UL_2:
2954 case CHIP_ID_YUKON_OPT:
2957 case CHIP_ID_YUKON_FE:
2960 case CHIP_ID_YUKON_FE_P:
2963 case CHIP_ID_YUKON_XL:
2971 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2973 return sky2_mhz(hw) * us;
2976 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2978 return clk / sky2_mhz(hw);
2982 static int __devinit sky2_init(struct sky2_hw *hw)
2986 /* Enable all clocks and check for bad PCI access */
2987 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
2989 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2991 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2992 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2994 switch (hw->chip_id) {
2995 case CHIP_ID_YUKON_XL:
2996 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
2997 if (hw->chip_rev < CHIP_REV_YU_XL_A2)
2998 hw->flags |= SKY2_HW_RSS_BROKEN;
3001 case CHIP_ID_YUKON_EC_U:
3002 hw->flags = SKY2_HW_GIGABIT
3004 | SKY2_HW_ADV_POWER_CTL;
3007 case CHIP_ID_YUKON_EX:
3008 hw->flags = SKY2_HW_GIGABIT
3011 | SKY2_HW_ADV_POWER_CTL;
3013 /* New transmit checksum */
3014 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
3015 hw->flags |= SKY2_HW_AUTO_TX_SUM;
3018 case CHIP_ID_YUKON_EC:
3019 /* This rev is really old, and requires untested workarounds */
3020 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
3021 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
3024 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_RSS_BROKEN;
3027 case CHIP_ID_YUKON_FE:
3028 hw->flags = SKY2_HW_RSS_BROKEN;
3031 case CHIP_ID_YUKON_FE_P:
3032 hw->flags = SKY2_HW_NEWER_PHY
3034 | SKY2_HW_AUTO_TX_SUM
3035 | SKY2_HW_ADV_POWER_CTL;
3037 /* The workaround for status conflicts VLAN tag detection. */
3038 if (hw->chip_rev == CHIP_REV_YU_FE2_A0)
3039 hw->flags |= SKY2_HW_VLAN_BROKEN;
3042 case CHIP_ID_YUKON_SUPR:
3043 hw->flags = SKY2_HW_GIGABIT
3046 | SKY2_HW_AUTO_TX_SUM
3047 | SKY2_HW_ADV_POWER_CTL;
3050 case CHIP_ID_YUKON_UL_2:
3051 hw->flags = SKY2_HW_GIGABIT
3052 | SKY2_HW_ADV_POWER_CTL;
3055 case CHIP_ID_YUKON_OPT:
3056 hw->flags = SKY2_HW_GIGABIT
3058 | SKY2_HW_ADV_POWER_CTL;
3062 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
3067 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
3068 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
3069 hw->flags |= SKY2_HW_FIBRE_PHY;
3072 t8 = sky2_read8(hw, B2_Y2_HW_RES);
3073 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
3074 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
3078 if (sky2_read8(hw, B2_E_0))
3079 hw->flags |= SKY2_HW_RAM_BUFFER;
3084 static void sky2_reset(struct sky2_hw *hw)
3086 struct pci_dev *pdev = hw->pdev;
3089 u32 hwe_mask = Y2_HWE_ALL_MASK;
3092 if (hw->chip_id == CHIP_ID_YUKON_EX
3093 || hw->chip_id == CHIP_ID_YUKON_SUPR) {
3094 sky2_write32(hw, CPU_WDOG, 0);
3095 status = sky2_read16(hw, HCU_CCSR);
3096 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
3097 HCU_CCSR_UC_STATE_MSK);
3099 * CPU clock divider shouldn't be used because
3100 * - ASF firmware may malfunction
3101 * - Yukon-Supreme: Parallel FLASH doesn't support divided clocks
3103 status &= ~HCU_CCSR_CPU_CLK_DIVIDE_MSK;
3104 sky2_write16(hw, HCU_CCSR, status);
3105 sky2_write32(hw, CPU_WDOG, 0);
3107 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
3108 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
3111 sky2_write8(hw, B0_CTST, CS_RST_SET);
3112 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3114 /* allow writes to PCI config */
3115 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3117 /* clear PCI errors, if any */
3118 status = sky2_pci_read16(hw, PCI_STATUS);
3119 status |= PCI_STATUS_ERROR_BITS;
3120 sky2_pci_write16(hw, PCI_STATUS, status);
3122 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
3124 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3126 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
3129 /* If error bit is stuck on ignore it */
3130 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
3131 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
3133 hwe_mask |= Y2_IS_PCI_EXP;
3137 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3139 for (i = 0; i < hw->ports; i++) {
3140 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
3141 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
3143 if (hw->chip_id == CHIP_ID_YUKON_EX ||
3144 hw->chip_id == CHIP_ID_YUKON_SUPR)
3145 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
3146 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
3151 if (hw->chip_id == CHIP_ID_YUKON_SUPR && hw->chip_rev > CHIP_REV_YU_SU_B0) {
3152 /* enable MACSec clock gating */
3153 sky2_pci_write32(hw, PCI_DEV_REG3, P_CLK_MACSEC_DIS);
3156 if (hw->chip_id == CHIP_ID_YUKON_OPT) {
3160 if (hw->chip_rev == 0) {
3161 /* disable PCI-E PHY power down (set PHY reg 0x80, bit 7 */
3162 sky2_write32(hw, Y2_PEX_PHY_DATA, (0x80UL << 16) | (1 << 7));
3164 /* set PHY Link Detect Timer to 1.1 second (11x 100ms) */
3167 /* set PHY Link Detect Timer to 0.4 second (4x 100ms) */
3171 reg <<= PSM_CONFIG_REG4_TIMER_PHY_LINK_DETECT_BASE;
3173 /* reset PHY Link Detect */
3174 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3175 sky2_pci_write16(hw, PSM_CONFIG_REG4,
3176 reg | PSM_CONFIG_REG4_RST_PHY_LINK_DETECT);
3177 sky2_pci_write16(hw, PSM_CONFIG_REG4, reg);
3180 /* enable PHY Quick Link */
3181 msk = sky2_read32(hw, B0_IMSK);
3182 msk |= Y2_IS_PHY_QLNK;
3183 sky2_write32(hw, B0_IMSK, msk);
3185 /* check if PSMv2 was running before */
3186 reg = sky2_pci_read16(hw, PSM_CONFIG_REG3);
3187 if (reg & PCI_EXP_LNKCTL_ASPMC) {
3188 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3189 /* restore the PCIe Link Control register */
3190 sky2_pci_write16(hw, cap + PCI_EXP_LNKCTL, reg);
3192 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3194 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3195 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3198 /* Clear I2C IRQ noise */
3199 sky2_write32(hw, B2_I2C_IRQ, 1);
3201 /* turn off hardware timer (unused) */
3202 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
3203 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
3205 /* Turn off descriptor polling */
3206 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
3208 /* Turn off receive timestamp */
3209 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
3210 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
3212 /* enable the Tx Arbiters */
3213 for (i = 0; i < hw->ports; i++)
3214 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3216 /* Initialize ram interface */
3217 for (i = 0; i < hw->ports; i++) {
3218 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
3220 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
3221 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
3222 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
3223 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
3224 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
3225 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
3226 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
3227 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
3228 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
3229 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
3230 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
3231 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
3234 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
3236 for (i = 0; i < hw->ports; i++)
3237 sky2_gmac_reset(hw, i);
3239 memset(hw->st_le, 0, hw->st_size * sizeof(struct sky2_status_le));
3242 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
3243 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
3245 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
3246 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
3248 /* Set the list last index */
3249 sky2_write16(hw, STAT_LAST_IDX, hw->st_size - 1);
3251 sky2_write16(hw, STAT_TX_IDX_TH, 10);
3252 sky2_write8(hw, STAT_FIFO_WM, 16);
3254 /* set Status-FIFO ISR watermark */
3255 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
3256 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
3258 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
3260 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
3261 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
3262 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
3264 /* enable status unit */
3265 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
3267 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3268 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3269 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3272 /* Take device down (offline).
3273 * Equivalent to doing dev_stop() but this does not
3274 * inform upper layers of the transition.
3276 static void sky2_detach(struct net_device *dev)
3278 if (netif_running(dev)) {
3280 netif_device_detach(dev); /* stop txq */
3281 netif_tx_unlock(dev);
3286 /* Bring device back after doing sky2_detach */
3287 static int sky2_reattach(struct net_device *dev)
3291 if (netif_running(dev)) {
3294 netdev_info(dev, "could not restart %d\n", err);
3297 netif_device_attach(dev);
3298 sky2_set_multicast(dev);
3305 static void sky2_all_down(struct sky2_hw *hw)
3309 sky2_read32(hw, B0_IMSK);
3310 sky2_write32(hw, B0_IMSK, 0);
3311 synchronize_irq(hw->pdev->irq);
3312 napi_disable(&hw->napi);
3314 for (i = 0; i < hw->ports; i++) {
3315 struct net_device *dev = hw->dev[i];
3316 struct sky2_port *sky2 = netdev_priv(dev);
3318 if (!netif_running(dev))
3321 netif_carrier_off(dev);
3322 netif_tx_disable(dev);
3327 static void sky2_all_up(struct sky2_hw *hw)
3329 u32 imask = Y2_IS_BASE;
3332 for (i = 0; i < hw->ports; i++) {
3333 struct net_device *dev = hw->dev[i];
3334 struct sky2_port *sky2 = netdev_priv(dev);
3336 if (!netif_running(dev))
3340 sky2_set_multicast(dev);
3341 imask |= portirq_msk[i];
3342 netif_wake_queue(dev);
3345 sky2_write32(hw, B0_IMSK, imask);
3346 sky2_read32(hw, B0_IMSK);
3348 sky2_read32(hw, B0_Y2_SP_LISR);
3349 napi_enable(&hw->napi);
3352 static void sky2_restart(struct work_struct *work)
3354 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
3365 static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
3367 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
3370 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3372 const struct sky2_port *sky2 = netdev_priv(dev);
3374 wol->supported = sky2_wol_supported(sky2->hw);
3375 wol->wolopts = sky2->wol;
3378 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3380 struct sky2_port *sky2 = netdev_priv(dev);
3381 struct sky2_hw *hw = sky2->hw;
3382 bool enable_wakeup = false;
3385 if ((wol->wolopts & ~sky2_wol_supported(sky2->hw)) ||
3386 !device_can_wakeup(&hw->pdev->dev))
3389 sky2->wol = wol->wolopts;
3391 for (i = 0; i < hw->ports; i++) {
3392 struct net_device *dev = hw->dev[i];
3393 struct sky2_port *sky2 = netdev_priv(dev);
3396 enable_wakeup = true;
3398 device_set_wakeup_enable(&hw->pdev->dev, enable_wakeup);
3403 static u32 sky2_supported_modes(const struct sky2_hw *hw)
3405 if (sky2_is_copper(hw)) {
3406 u32 modes = SUPPORTED_10baseT_Half
3407 | SUPPORTED_10baseT_Full
3408 | SUPPORTED_100baseT_Half
3409 | SUPPORTED_100baseT_Full;
3411 if (hw->flags & SKY2_HW_GIGABIT)
3412 modes |= SUPPORTED_1000baseT_Half
3413 | SUPPORTED_1000baseT_Full;
3416 return SUPPORTED_1000baseT_Half
3417 | SUPPORTED_1000baseT_Full;
3420 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3422 struct sky2_port *sky2 = netdev_priv(dev);
3423 struct sky2_hw *hw = sky2->hw;
3425 ecmd->transceiver = XCVR_INTERNAL;
3426 ecmd->supported = sky2_supported_modes(hw);
3427 ecmd->phy_address = PHY_ADDR_MARV;
3428 if (sky2_is_copper(hw)) {
3429 ecmd->port = PORT_TP;
3430 ethtool_cmd_speed_set(ecmd, sky2->speed);
3431 ecmd->supported |= SUPPORTED_Autoneg | SUPPORTED_TP;
3433 ethtool_cmd_speed_set(ecmd, SPEED_1000);
3434 ecmd->port = PORT_FIBRE;
3435 ecmd->supported |= SUPPORTED_Autoneg | SUPPORTED_FIBRE;
3438 ecmd->advertising = sky2->advertising;
3439 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_SPEED)
3440 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3441 ecmd->duplex = sky2->duplex;
3445 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3447 struct sky2_port *sky2 = netdev_priv(dev);
3448 const struct sky2_hw *hw = sky2->hw;
3449 u32 supported = sky2_supported_modes(hw);
3451 if (ecmd->autoneg == AUTONEG_ENABLE) {
3452 if (ecmd->advertising & ~supported)
3455 if (sky2_is_copper(hw))
3456 sky2->advertising = ecmd->advertising |
3460 sky2->advertising = ecmd->advertising |
3464 sky2->flags |= SKY2_FLAG_AUTO_SPEED;
3469 u32 speed = ethtool_cmd_speed(ecmd);
3473 if (ecmd->duplex == DUPLEX_FULL)
3474 setting = SUPPORTED_1000baseT_Full;
3475 else if (ecmd->duplex == DUPLEX_HALF)
3476 setting = SUPPORTED_1000baseT_Half;
3481 if (ecmd->duplex == DUPLEX_FULL)
3482 setting = SUPPORTED_100baseT_Full;
3483 else if (ecmd->duplex == DUPLEX_HALF)
3484 setting = SUPPORTED_100baseT_Half;
3490 if (ecmd->duplex == DUPLEX_FULL)
3491 setting = SUPPORTED_10baseT_Full;
3492 else if (ecmd->duplex == DUPLEX_HALF)
3493 setting = SUPPORTED_10baseT_Half;
3501 if ((setting & supported) == 0)
3504 sky2->speed = speed;
3505 sky2->duplex = ecmd->duplex;
3506 sky2->flags &= ~SKY2_FLAG_AUTO_SPEED;
3509 if (netif_running(dev)) {
3510 sky2_phy_reinit(sky2);
3511 sky2_set_multicast(dev);
3517 static void sky2_get_drvinfo(struct net_device *dev,
3518 struct ethtool_drvinfo *info)
3520 struct sky2_port *sky2 = netdev_priv(dev);
3522 strcpy(info->driver, DRV_NAME);
3523 strcpy(info->version, DRV_VERSION);
3524 strcpy(info->fw_version, "N/A");
3525 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
3528 static const struct sky2_stat {
3529 char name[ETH_GSTRING_LEN];
3532 { "tx_bytes", GM_TXO_OK_HI },
3533 { "rx_bytes", GM_RXO_OK_HI },
3534 { "tx_broadcast", GM_TXF_BC_OK },
3535 { "rx_broadcast", GM_RXF_BC_OK },
3536 { "tx_multicast", GM_TXF_MC_OK },
3537 { "rx_multicast", GM_RXF_MC_OK },
3538 { "tx_unicast", GM_TXF_UC_OK },
3539 { "rx_unicast", GM_RXF_UC_OK },
3540 { "tx_mac_pause", GM_TXF_MPAUSE },
3541 { "rx_mac_pause", GM_RXF_MPAUSE },
3542 { "collisions", GM_TXF_COL },
3543 { "late_collision",GM_TXF_LAT_COL },
3544 { "aborted", GM_TXF_ABO_COL },
3545 { "single_collisions", GM_TXF_SNG_COL },
3546 { "multi_collisions", GM_TXF_MUL_COL },
3548 { "rx_short", GM_RXF_SHT },
3549 { "rx_runt", GM_RXE_FRAG },
3550 { "rx_64_byte_packets", GM_RXF_64B },
3551 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3552 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3553 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3554 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3555 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3556 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3557 { "rx_too_long", GM_RXF_LNG_ERR },
3558 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3559 { "rx_jabber", GM_RXF_JAB_PKT },
3560 { "rx_fcs_error", GM_RXF_FCS_ERR },
3562 { "tx_64_byte_packets", GM_TXF_64B },
3563 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3564 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3565 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3566 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3567 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3568 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3569 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3572 static u32 sky2_get_msglevel(struct net_device *netdev)
3574 struct sky2_port *sky2 = netdev_priv(netdev);
3575 return sky2->msg_enable;
3578 static int sky2_nway_reset(struct net_device *dev)
3580 struct sky2_port *sky2 = netdev_priv(dev);
3582 if (!netif_running(dev) || !(sky2->flags & SKY2_FLAG_AUTO_SPEED))
3585 sky2_phy_reinit(sky2);
3586 sky2_set_multicast(dev);
3591 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3593 struct sky2_hw *hw = sky2->hw;
3594 unsigned port = sky2->port;
3597 data[0] = get_stats64(hw, port, GM_TXO_OK_LO);
3598 data[1] = get_stats64(hw, port, GM_RXO_OK_LO);
3600 for (i = 2; i < count; i++)
3601 data[i] = get_stats32(hw, port, sky2_stats[i].offset);
3604 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3606 struct sky2_port *sky2 = netdev_priv(netdev);
3607 sky2->msg_enable = value;
3610 static int sky2_get_sset_count(struct net_device *dev, int sset)
3614 return ARRAY_SIZE(sky2_stats);
3620 static void sky2_get_ethtool_stats(struct net_device *dev,
3621 struct ethtool_stats *stats, u64 * data)
3623 struct sky2_port *sky2 = netdev_priv(dev);
3625 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3628 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3632 switch (stringset) {
3634 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3635 memcpy(data + i * ETH_GSTRING_LEN,
3636 sky2_stats[i].name, ETH_GSTRING_LEN);
3641 static int sky2_set_mac_address(struct net_device *dev, void *p)
3643 struct sky2_port *sky2 = netdev_priv(dev);
3644 struct sky2_hw *hw = sky2->hw;
3645 unsigned port = sky2->port;
3646 const struct sockaddr *addr = p;
3648 if (!is_valid_ether_addr(addr->sa_data))
3649 return -EADDRNOTAVAIL;
3651 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3652 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3653 dev->dev_addr, ETH_ALEN);
3654 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3655 dev->dev_addr, ETH_ALEN);
3657 /* virtual address for data */
3658 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3660 /* physical address: used for pause frames */
3661 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3666 static inline void sky2_add_filter(u8 filter[8], const u8 *addr)
3670 bit = ether_crc(ETH_ALEN, addr) & 63;
3671 filter[bit >> 3] |= 1 << (bit & 7);
3674 static void sky2_set_multicast(struct net_device *dev)
3676 struct sky2_port *sky2 = netdev_priv(dev);
3677 struct sky2_hw *hw = sky2->hw;
3678 unsigned port = sky2->port;
3679 struct netdev_hw_addr *ha;
3683 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3685 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3686 memset(filter, 0, sizeof(filter));
3688 reg = gma_read16(hw, port, GM_RX_CTRL);
3689 reg |= GM_RXCR_UCF_ENA;
3691 if (dev->flags & IFF_PROMISC) /* promiscuous */
3692 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3693 else if (dev->flags & IFF_ALLMULTI)
3694 memset(filter, 0xff, sizeof(filter));
3695 else if (netdev_mc_empty(dev) && !rx_pause)
3696 reg &= ~GM_RXCR_MCF_ENA;
3698 reg |= GM_RXCR_MCF_ENA;
3701 sky2_add_filter(filter, pause_mc_addr);
3703 netdev_for_each_mc_addr(ha, dev)
3704 sky2_add_filter(filter, ha->addr);
3707 gma_write16(hw, port, GM_MC_ADDR_H1,
3708 (u16) filter[0] | ((u16) filter[1] << 8));
3709 gma_write16(hw, port, GM_MC_ADDR_H2,
3710 (u16) filter[2] | ((u16) filter[3] << 8));
3711 gma_write16(hw, port, GM_MC_ADDR_H3,
3712 (u16) filter[4] | ((u16) filter[5] << 8));
3713 gma_write16(hw, port, GM_MC_ADDR_H4,
3714 (u16) filter[6] | ((u16) filter[7] << 8));
3716 gma_write16(hw, port, GM_RX_CTRL, reg);
3719 static struct rtnl_link_stats64 *sky2_get_stats(struct net_device *dev,
3720 struct rtnl_link_stats64 *stats)
3722 struct sky2_port *sky2 = netdev_priv(dev);
3723 struct sky2_hw *hw = sky2->hw;
3724 unsigned port = sky2->port;
3726 u64 _bytes, _packets;
3729 start = u64_stats_fetch_begin_bh(&sky2->rx_stats.syncp);
3730 _bytes = sky2->rx_stats.bytes;
3731 _packets = sky2->rx_stats.packets;
3732 } while (u64_stats_fetch_retry_bh(&sky2->rx_stats.syncp, start));
3734 stats->rx_packets = _packets;
3735 stats->rx_bytes = _bytes;
3738 start = u64_stats_fetch_begin_bh(&sky2->tx_stats.syncp);
3739 _bytes = sky2->tx_stats.bytes;
3740 _packets = sky2->tx_stats.packets;
3741 } while (u64_stats_fetch_retry_bh(&sky2->tx_stats.syncp, start));
3743 stats->tx_packets = _packets;
3744 stats->tx_bytes = _bytes;
3746 stats->multicast = get_stats32(hw, port, GM_RXF_MC_OK)
3747 + get_stats32(hw, port, GM_RXF_BC_OK);
3749 stats->collisions = get_stats32(hw, port, GM_TXF_COL);
3751 stats->rx_length_errors = get_stats32(hw, port, GM_RXF_LNG_ERR);
3752 stats->rx_crc_errors = get_stats32(hw, port, GM_RXF_FCS_ERR);
3753 stats->rx_frame_errors = get_stats32(hw, port, GM_RXF_SHT)
3754 + get_stats32(hw, port, GM_RXE_FRAG);
3755 stats->rx_over_errors = get_stats32(hw, port, GM_RXE_FIFO_OV);
3757 stats->rx_dropped = dev->stats.rx_dropped;
3758 stats->rx_fifo_errors = dev->stats.rx_fifo_errors;
3759 stats->tx_fifo_errors = dev->stats.tx_fifo_errors;
3764 /* Can have one global because blinking is controlled by
3765 * ethtool and that is always under RTNL mutex
3767 static void sky2_led(struct sky2_port *sky2, enum led_mode mode)
3769 struct sky2_hw *hw = sky2->hw;
3770 unsigned port = sky2->port;
3772 spin_lock_bh(&sky2->phy_lock);
3773 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3774 hw->chip_id == CHIP_ID_YUKON_EX ||
3775 hw->chip_id == CHIP_ID_YUKON_SUPR) {
3777 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3778 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3782 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3783 PHY_M_LEDC_LOS_CTRL(8) |
3784 PHY_M_LEDC_INIT_CTRL(8) |
3785 PHY_M_LEDC_STA1_CTRL(8) |
3786 PHY_M_LEDC_STA0_CTRL(8));
3789 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3790 PHY_M_LEDC_LOS_CTRL(9) |
3791 PHY_M_LEDC_INIT_CTRL(9) |
3792 PHY_M_LEDC_STA1_CTRL(9) |
3793 PHY_M_LEDC_STA0_CTRL(9));
3796 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3797 PHY_M_LEDC_LOS_CTRL(0xa) |
3798 PHY_M_LEDC_INIT_CTRL(0xa) |
3799 PHY_M_LEDC_STA1_CTRL(0xa) |
3800 PHY_M_LEDC_STA0_CTRL(0xa));
3803 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3804 PHY_M_LEDC_LOS_CTRL(1) |
3805 PHY_M_LEDC_INIT_CTRL(8) |
3806 PHY_M_LEDC_STA1_CTRL(7) |
3807 PHY_M_LEDC_STA0_CTRL(7));
3810 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3812 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3813 PHY_M_LED_MO_DUP(mode) |
3814 PHY_M_LED_MO_10(mode) |
3815 PHY_M_LED_MO_100(mode) |
3816 PHY_M_LED_MO_1000(mode) |
3817 PHY_M_LED_MO_RX(mode) |
3818 PHY_M_LED_MO_TX(mode));
3820 spin_unlock_bh(&sky2->phy_lock);
3823 /* blink LED's for finding board */
3824 static int sky2_set_phys_id(struct net_device *dev,
3825 enum ethtool_phys_id_state state)
3827 struct sky2_port *sky2 = netdev_priv(dev);
3830 case ETHTOOL_ID_ACTIVE:
3831 return 1; /* cycle on/off once per second */
3832 case ETHTOOL_ID_INACTIVE:
3833 sky2_led(sky2, MO_LED_NORM);
3836 sky2_led(sky2, MO_LED_ON);
3838 case ETHTOOL_ID_OFF:
3839 sky2_led(sky2, MO_LED_OFF);
3846 static void sky2_get_pauseparam(struct net_device *dev,
3847 struct ethtool_pauseparam *ecmd)
3849 struct sky2_port *sky2 = netdev_priv(dev);
3851 switch (sky2->flow_mode) {
3853 ecmd->tx_pause = ecmd->rx_pause = 0;
3856 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
3859 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
3862 ecmd->tx_pause = ecmd->rx_pause = 1;
3865 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_PAUSE)
3866 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3869 static int sky2_set_pauseparam(struct net_device *dev,
3870 struct ethtool_pauseparam *ecmd)
3872 struct sky2_port *sky2 = netdev_priv(dev);
3874 if (ecmd->autoneg == AUTONEG_ENABLE)
3875 sky2->flags |= SKY2_FLAG_AUTO_PAUSE;
3877 sky2->flags &= ~SKY2_FLAG_AUTO_PAUSE;
3879 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
3881 if (netif_running(dev))
3882 sky2_phy_reinit(sky2);
3887 static int sky2_get_coalesce(struct net_device *dev,
3888 struct ethtool_coalesce *ecmd)
3890 struct sky2_port *sky2 = netdev_priv(dev);
3891 struct sky2_hw *hw = sky2->hw;
3893 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
3894 ecmd->tx_coalesce_usecs = 0;
3896 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
3897 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
3899 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
3901 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
3902 ecmd->rx_coalesce_usecs = 0;
3904 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
3905 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
3907 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
3909 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
3910 ecmd->rx_coalesce_usecs_irq = 0;
3912 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
3913 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
3916 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
3921 /* Note: this affect both ports */
3922 static int sky2_set_coalesce(struct net_device *dev,
3923 struct ethtool_coalesce *ecmd)
3925 struct sky2_port *sky2 = netdev_priv(dev);
3926 struct sky2_hw *hw = sky2->hw;
3927 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
3929 if (ecmd->tx_coalesce_usecs > tmax ||
3930 ecmd->rx_coalesce_usecs > tmax ||
3931 ecmd->rx_coalesce_usecs_irq > tmax)
3934 if (ecmd->tx_max_coalesced_frames >= sky2->tx_ring_size-1)
3936 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
3938 if (ecmd->rx_max_coalesced_frames_irq > RX_MAX_PENDING)
3941 if (ecmd->tx_coalesce_usecs == 0)
3942 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
3944 sky2_write32(hw, STAT_TX_TIMER_INI,
3945 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
3946 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3948 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
3950 if (ecmd->rx_coalesce_usecs == 0)
3951 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
3953 sky2_write32(hw, STAT_LEV_TIMER_INI,
3954 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
3955 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3957 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
3959 if (ecmd->rx_coalesce_usecs_irq == 0)
3960 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
3962 sky2_write32(hw, STAT_ISR_TIMER_INI,
3963 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
3964 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3966 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
3970 static void sky2_get_ringparam(struct net_device *dev,
3971 struct ethtool_ringparam *ering)
3973 struct sky2_port *sky2 = netdev_priv(dev);
3975 ering->rx_max_pending = RX_MAX_PENDING;
3976 ering->rx_mini_max_pending = 0;
3977 ering->rx_jumbo_max_pending = 0;
3978 ering->tx_max_pending = TX_MAX_PENDING;
3980 ering->rx_pending = sky2->rx_pending;
3981 ering->rx_mini_pending = 0;
3982 ering->rx_jumbo_pending = 0;
3983 ering->tx_pending = sky2->tx_pending;
3986 static int sky2_set_ringparam(struct net_device *dev,
3987 struct ethtool_ringparam *ering)
3989 struct sky2_port *sky2 = netdev_priv(dev);
3991 if (ering->rx_pending > RX_MAX_PENDING ||
3992 ering->rx_pending < 8 ||
3993 ering->tx_pending < TX_MIN_PENDING ||
3994 ering->tx_pending > TX_MAX_PENDING)
3999 sky2->rx_pending = ering->rx_pending;
4000 sky2->tx_pending = ering->tx_pending;
4001 sky2->tx_ring_size = roundup_pow_of_two(sky2->tx_pending+1);
4003 return sky2_reattach(dev);
4006 static int sky2_get_regs_len(struct net_device *dev)
4011 static int sky2_reg_access_ok(struct sky2_hw *hw, unsigned int b)
4013 /* This complicated switch statement is to make sure and
4014 * only access regions that are unreserved.
4015 * Some blocks are only valid on dual port cards.
4019 case 5: /* Tx Arbiter 2 */
4021 case 14 ... 15: /* TX2 */
4022 case 17: case 19: /* Ram Buffer 2 */
4023 case 22 ... 23: /* Tx Ram Buffer 2 */
4024 case 25: /* Rx MAC Fifo 1 */
4025 case 27: /* Tx MAC Fifo 2 */
4026 case 31: /* GPHY 2 */
4027 case 40 ... 47: /* Pattern Ram 2 */
4028 case 52: case 54: /* TCP Segmentation 2 */
4029 case 112 ... 116: /* GMAC 2 */
4030 return hw->ports > 1;
4032 case 0: /* Control */
4033 case 2: /* Mac address */
4034 case 4: /* Tx Arbiter 1 */
4035 case 7: /* PCI express reg */
4037 case 12 ... 13: /* TX1 */
4038 case 16: case 18:/* Rx Ram Buffer 1 */
4039 case 20 ... 21: /* Tx Ram Buffer 1 */
4040 case 24: /* Rx MAC Fifo 1 */
4041 case 26: /* Tx MAC Fifo 1 */
4042 case 28 ... 29: /* Descriptor and status unit */
4043 case 30: /* GPHY 1*/
4044 case 32 ... 39: /* Pattern Ram 1 */
4045 case 48: case 50: /* TCP Segmentation 1 */
4046 case 56 ... 60: /* PCI space */
4047 case 80 ... 84: /* GMAC 1 */
4056 * Returns copy of control register region
4057 * Note: ethtool_get_regs always provides full size (16k) buffer
4059 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
4062 const struct sky2_port *sky2 = netdev_priv(dev);
4063 const void __iomem *io = sky2->hw->regs;
4068 for (b = 0; b < 128; b++) {
4069 /* skip poisonous diagnostic ram region in block 3 */
4071 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
4072 else if (sky2_reg_access_ok(sky2->hw, b))
4073 memcpy_fromio(p, io, 128);
4082 static int sky2_get_eeprom_len(struct net_device *dev)
4084 struct sky2_port *sky2 = netdev_priv(dev);
4085 struct sky2_hw *hw = sky2->hw;
4088 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4089 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4092 static int sky2_vpd_wait(const struct sky2_hw *hw, int cap, u16 busy)
4094 unsigned long start = jiffies;
4096 while ( (sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F) == busy) {
4097 /* Can take up to 10.6 ms for write */
4098 if (time_after(jiffies, start + HZ/4)) {
4099 dev_err(&hw->pdev->dev, "VPD cycle timed out\n");
4108 static int sky2_vpd_read(struct sky2_hw *hw, int cap, void *data,
4109 u16 offset, size_t length)
4113 while (length > 0) {
4116 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
4117 rc = sky2_vpd_wait(hw, cap, 0);
4121 val = sky2_pci_read32(hw, cap + PCI_VPD_DATA);
4123 memcpy(data, &val, min(sizeof(val), length));
4124 offset += sizeof(u32);
4125 data += sizeof(u32);
4126 length -= sizeof(u32);
4132 static int sky2_vpd_write(struct sky2_hw *hw, int cap, const void *data,
4133 u16 offset, unsigned int length)
4138 for (i = 0; i < length; i += sizeof(u32)) {
4139 u32 val = *(u32 *)(data + i);
4141 sky2_pci_write32(hw, cap + PCI_VPD_DATA, val);
4142 sky2_pci_write32(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
4144 rc = sky2_vpd_wait(hw, cap, PCI_VPD_ADDR_F);
4151 static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4154 struct sky2_port *sky2 = netdev_priv(dev);
4155 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4160 eeprom->magic = SKY2_EEPROM_MAGIC;
4162 return sky2_vpd_read(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4165 static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4168 struct sky2_port *sky2 = netdev_priv(dev);
4169 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4174 if (eeprom->magic != SKY2_EEPROM_MAGIC)
4177 /* Partial writes not supported */
4178 if ((eeprom->offset & 3) || (eeprom->len & 3))
4181 return sky2_vpd_write(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4184 static u32 sky2_fix_features(struct net_device *dev, u32 features)
4186 const struct sky2_port *sky2 = netdev_priv(dev);
4187 const struct sky2_hw *hw = sky2->hw;
4189 /* In order to do Jumbo packets on these chips, need to turn off the
4190 * transmit store/forward. Therefore checksum offload won't work.
4192 if (dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U)
4193 features &= ~(NETIF_F_TSO|NETIF_F_SG|NETIF_F_ALL_CSUM);
4198 static int sky2_set_features(struct net_device *dev, u32 features)
4200 struct sky2_port *sky2 = netdev_priv(dev);
4201 u32 changed = dev->features ^ features;
4203 if (changed & NETIF_F_RXCSUM) {
4204 u32 on = features & NETIF_F_RXCSUM;
4205 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
4206 on ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
4209 if (changed & NETIF_F_RXHASH)
4210 rx_set_rss(dev, features);
4212 if (changed & (NETIF_F_HW_VLAN_TX|NETIF_F_HW_VLAN_RX))
4213 sky2_vlan_mode(dev, features);
4218 static const struct ethtool_ops sky2_ethtool_ops = {
4219 .get_settings = sky2_get_settings,
4220 .set_settings = sky2_set_settings,
4221 .get_drvinfo = sky2_get_drvinfo,
4222 .get_wol = sky2_get_wol,
4223 .set_wol = sky2_set_wol,
4224 .get_msglevel = sky2_get_msglevel,
4225 .set_msglevel = sky2_set_msglevel,
4226 .nway_reset = sky2_nway_reset,
4227 .get_regs_len = sky2_get_regs_len,
4228 .get_regs = sky2_get_regs,
4229 .get_link = ethtool_op_get_link,
4230 .get_eeprom_len = sky2_get_eeprom_len,
4231 .get_eeprom = sky2_get_eeprom,
4232 .set_eeprom = sky2_set_eeprom,
4233 .get_strings = sky2_get_strings,
4234 .get_coalesce = sky2_get_coalesce,
4235 .set_coalesce = sky2_set_coalesce,
4236 .get_ringparam = sky2_get_ringparam,
4237 .set_ringparam = sky2_set_ringparam,
4238 .get_pauseparam = sky2_get_pauseparam,
4239 .set_pauseparam = sky2_set_pauseparam,
4240 .set_phys_id = sky2_set_phys_id,
4241 .get_sset_count = sky2_get_sset_count,
4242 .get_ethtool_stats = sky2_get_ethtool_stats,
4245 #ifdef CONFIG_SKY2_DEBUG
4247 static struct dentry *sky2_debug;
4251 * Read and parse the first part of Vital Product Data
4253 #define VPD_SIZE 128
4254 #define VPD_MAGIC 0x82
4256 static const struct vpd_tag {
4260 { "PN", "Part Number" },
4261 { "EC", "Engineering Level" },
4262 { "MN", "Manufacturer" },
4263 { "SN", "Serial Number" },
4264 { "YA", "Asset Tag" },
4265 { "VL", "First Error Log Message" },
4266 { "VF", "Second Error Log Message" },
4267 { "VB", "Boot Agent ROM Configuration" },
4268 { "VE", "EFI UNDI Configuration" },
4271 static void sky2_show_vpd(struct seq_file *seq, struct sky2_hw *hw)
4279 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4280 vpd_size = 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4282 seq_printf(seq, "%s Product Data\n", pci_name(hw->pdev));
4283 buf = kmalloc(vpd_size, GFP_KERNEL);
4285 seq_puts(seq, "no memory!\n");
4289 if (pci_read_vpd(hw->pdev, 0, vpd_size, buf) < 0) {
4290 seq_puts(seq, "VPD read failed\n");
4294 if (buf[0] != VPD_MAGIC) {
4295 seq_printf(seq, "VPD tag mismatch: %#x\n", buf[0]);
4299 if (len == 0 || len > vpd_size - 4) {
4300 seq_printf(seq, "Invalid id length: %d\n", len);
4304 seq_printf(seq, "%.*s\n", len, buf + 3);
4307 while (offs < vpd_size - 4) {
4310 if (!memcmp("RW", buf + offs, 2)) /* end marker */
4312 len = buf[offs + 2];
4313 if (offs + len + 3 >= vpd_size)
4316 for (i = 0; i < ARRAY_SIZE(vpd_tags); i++) {
4317 if (!memcmp(vpd_tags[i].tag, buf + offs, 2)) {
4318 seq_printf(seq, " %s: %.*s\n",
4319 vpd_tags[i].label, len, buf + offs + 3);
4329 static int sky2_debug_show(struct seq_file *seq, void *v)
4331 struct net_device *dev = seq->private;
4332 const struct sky2_port *sky2 = netdev_priv(dev);
4333 struct sky2_hw *hw = sky2->hw;
4334 unsigned port = sky2->port;
4338 sky2_show_vpd(seq, hw);
4340 seq_printf(seq, "\nIRQ src=%x mask=%x control=%x\n",
4341 sky2_read32(hw, B0_ISRC),
4342 sky2_read32(hw, B0_IMSK),
4343 sky2_read32(hw, B0_Y2_SP_ICR));
4345 if (!netif_running(dev)) {
4346 seq_printf(seq, "network not running\n");
4350 napi_disable(&hw->napi);
4351 last = sky2_read16(hw, STAT_PUT_IDX);
4353 seq_printf(seq, "Status ring %u\n", hw->st_size);
4354 if (hw->st_idx == last)
4355 seq_puts(seq, "Status ring (empty)\n");
4357 seq_puts(seq, "Status ring\n");
4358 for (idx = hw->st_idx; idx != last && idx < hw->st_size;
4359 idx = RING_NEXT(idx, hw->st_size)) {
4360 const struct sky2_status_le *le = hw->st_le + idx;
4361 seq_printf(seq, "[%d] %#x %d %#x\n",
4362 idx, le->opcode, le->length, le->status);
4364 seq_puts(seq, "\n");
4367 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
4368 sky2->tx_cons, sky2->tx_prod,
4369 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
4370 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
4372 /* Dump contents of tx ring */
4374 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < sky2->tx_ring_size;
4375 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
4376 const struct sky2_tx_le *le = sky2->tx_le + idx;
4377 u32 a = le32_to_cpu(le->addr);
4380 seq_printf(seq, "%u:", idx);
4383 switch (le->opcode & ~HW_OWNER) {
4385 seq_printf(seq, " %#x:", a);
4388 seq_printf(seq, " mtu=%d", a);
4391 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
4394 seq_printf(seq, " csum=%#x", a);
4397 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
4400 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
4403 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
4406 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
4407 a, le16_to_cpu(le->length));
4410 if (le->ctrl & EOP) {
4411 seq_putc(seq, '\n');
4416 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
4417 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
4418 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
4419 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
4421 sky2_read32(hw, B0_Y2_SP_LISR);
4422 napi_enable(&hw->napi);
4426 static int sky2_debug_open(struct inode *inode, struct file *file)
4428 return single_open(file, sky2_debug_show, inode->i_private);
4431 static const struct file_operations sky2_debug_fops = {
4432 .owner = THIS_MODULE,
4433 .open = sky2_debug_open,
4435 .llseek = seq_lseek,
4436 .release = single_release,
4440 * Use network device events to create/remove/rename
4441 * debugfs file entries
4443 static int sky2_device_event(struct notifier_block *unused,
4444 unsigned long event, void *ptr)
4446 struct net_device *dev = ptr;
4447 struct sky2_port *sky2 = netdev_priv(dev);
4449 if (dev->netdev_ops->ndo_open != sky2_up || !sky2_debug)
4453 case NETDEV_CHANGENAME:
4454 if (sky2->debugfs) {
4455 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
4456 sky2_debug, dev->name);
4460 case NETDEV_GOING_DOWN:
4461 if (sky2->debugfs) {
4462 netdev_printk(KERN_DEBUG, dev, "remove debugfs\n");
4463 debugfs_remove(sky2->debugfs);
4464 sky2->debugfs = NULL;
4469 sky2->debugfs = debugfs_create_file(dev->name, S_IRUGO,
4472 if (IS_ERR(sky2->debugfs))
4473 sky2->debugfs = NULL;
4479 static struct notifier_block sky2_notifier = {
4480 .notifier_call = sky2_device_event,
4484 static __init void sky2_debug_init(void)
4488 ent = debugfs_create_dir("sky2", NULL);
4489 if (!ent || IS_ERR(ent))
4493 register_netdevice_notifier(&sky2_notifier);
4496 static __exit void sky2_debug_cleanup(void)
4499 unregister_netdevice_notifier(&sky2_notifier);
4500 debugfs_remove(sky2_debug);
4506 #define sky2_debug_init()
4507 #define sky2_debug_cleanup()
4510 /* Two copies of network device operations to handle special case of
4511 not allowing netpoll on second port */
4512 static const struct net_device_ops sky2_netdev_ops[2] = {
4514 .ndo_open = sky2_up,
4515 .ndo_stop = sky2_down,
4516 .ndo_start_xmit = sky2_xmit_frame,
4517 .ndo_do_ioctl = sky2_ioctl,
4518 .ndo_validate_addr = eth_validate_addr,
4519 .ndo_set_mac_address = sky2_set_mac_address,
4520 .ndo_set_multicast_list = sky2_set_multicast,
4521 .ndo_change_mtu = sky2_change_mtu,
4522 .ndo_fix_features = sky2_fix_features,
4523 .ndo_set_features = sky2_set_features,
4524 .ndo_tx_timeout = sky2_tx_timeout,
4525 .ndo_get_stats64 = sky2_get_stats,
4526 #ifdef CONFIG_NET_POLL_CONTROLLER
4527 .ndo_poll_controller = sky2_netpoll,
4531 .ndo_open = sky2_up,
4532 .ndo_stop = sky2_down,
4533 .ndo_start_xmit = sky2_xmit_frame,
4534 .ndo_do_ioctl = sky2_ioctl,
4535 .ndo_validate_addr = eth_validate_addr,
4536 .ndo_set_mac_address = sky2_set_mac_address,
4537 .ndo_set_multicast_list = sky2_set_multicast,
4538 .ndo_change_mtu = sky2_change_mtu,
4539 .ndo_fix_features = sky2_fix_features,
4540 .ndo_set_features = sky2_set_features,
4541 .ndo_tx_timeout = sky2_tx_timeout,
4542 .ndo_get_stats64 = sky2_get_stats,
4546 /* Initialize network device */
4547 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
4549 int highmem, int wol)
4551 struct sky2_port *sky2;
4552 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
4555 dev_err(&hw->pdev->dev, "etherdev alloc failed\n");
4559 SET_NETDEV_DEV(dev, &hw->pdev->dev);
4560 dev->irq = hw->pdev->irq;
4561 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
4562 dev->watchdog_timeo = TX_WATCHDOG;
4563 dev->netdev_ops = &sky2_netdev_ops[port];
4565 sky2 = netdev_priv(dev);
4568 sky2->msg_enable = netif_msg_init(debug, default_msg);
4570 /* Auto speed and flow control */
4571 sky2->flags = SKY2_FLAG_AUTO_SPEED | SKY2_FLAG_AUTO_PAUSE;
4572 if (hw->chip_id != CHIP_ID_YUKON_XL)
4573 dev->hw_features |= NETIF_F_RXCSUM;
4575 sky2->flow_mode = FC_BOTH;
4579 sky2->advertising = sky2_supported_modes(hw);
4582 spin_lock_init(&sky2->phy_lock);
4584 sky2->tx_pending = TX_DEF_PENDING;
4585 sky2->tx_ring_size = roundup_pow_of_two(TX_DEF_PENDING+1);
4586 sky2->rx_pending = RX_DEF_PENDING;
4588 hw->dev[port] = dev;
4592 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO;
4595 dev->features |= NETIF_F_HIGHDMA;
4597 /* Enable receive hashing unless hardware is known broken */
4598 if (!(hw->flags & SKY2_HW_RSS_BROKEN))
4599 dev->hw_features |= NETIF_F_RXHASH;
4601 if (!(hw->flags & SKY2_HW_VLAN_BROKEN)) {
4602 dev->hw_features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
4603 dev->vlan_features |= SKY2_VLAN_OFFLOADS;
4606 dev->features |= dev->hw_features;
4608 /* read the mac address */
4609 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
4610 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
4615 static void __devinit sky2_show_addr(struct net_device *dev)
4617 const struct sky2_port *sky2 = netdev_priv(dev);
4619 netif_info(sky2, probe, dev, "addr %pM\n", dev->dev_addr);
4622 /* Handle software interrupt used during MSI test */
4623 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
4625 struct sky2_hw *hw = dev_id;
4626 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4631 if (status & Y2_IS_IRQ_SW) {
4632 hw->flags |= SKY2_HW_USE_MSI;
4633 wake_up(&hw->msi_wait);
4634 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4636 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4641 /* Test interrupt path by forcing a a software IRQ */
4642 static int __devinit sky2_test_msi(struct sky2_hw *hw)
4644 struct pci_dev *pdev = hw->pdev;
4647 init_waitqueue_head(&hw->msi_wait);
4649 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4651 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4653 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4657 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4658 sky2_read8(hw, B0_CTST);
4660 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4662 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4663 /* MSI test failed, go back to INTx mode */
4664 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4665 "switching to INTx mode.\n");
4668 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4671 sky2_write32(hw, B0_IMSK, 0);
4672 sky2_read32(hw, B0_IMSK);
4674 free_irq(pdev->irq, hw);
4679 /* This driver supports yukon2 chipset only */
4680 static const char *sky2_name(u8 chipid, char *buf, int sz)
4682 const char *name[] = {
4684 "EC Ultra", /* 0xb4 */
4685 "Extreme", /* 0xb5 */
4689 "Supreme", /* 0xb9 */
4691 "Unknown", /* 0xbb */
4692 "Optima", /* 0xbc */
4695 if (chipid >= CHIP_ID_YUKON_XL && chipid <= CHIP_ID_YUKON_OPT)
4696 strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
4698 snprintf(buf, sz, "(chip %#x)", chipid);
4702 static int __devinit sky2_probe(struct pci_dev *pdev,
4703 const struct pci_device_id *ent)
4705 struct net_device *dev;
4707 int err, using_dac = 0, wol_default;
4711 err = pci_enable_device(pdev);
4713 dev_err(&pdev->dev, "cannot enable PCI device\n");
4717 /* Get configuration information
4718 * Note: only regular PCI config access once to test for HW issues
4719 * other PCI access through shared memory for speed and to
4720 * avoid MMCONFIG problems.
4722 err = pci_read_config_dword(pdev, PCI_DEV_REG2, ®);
4724 dev_err(&pdev->dev, "PCI read config failed\n");
4729 dev_err(&pdev->dev, "PCI configuration read error\n");
4733 err = pci_request_regions(pdev, DRV_NAME);
4735 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4736 goto err_out_disable;
4739 pci_set_master(pdev);
4741 if (sizeof(dma_addr_t) > sizeof(u32) &&
4742 !(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))) {
4744 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4746 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4747 "for consistent allocations\n");
4748 goto err_out_free_regions;
4751 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4753 dev_err(&pdev->dev, "no usable DMA configuration\n");
4754 goto err_out_free_regions;
4760 /* The sk98lin vendor driver uses hardware byte swapping but
4761 * this driver uses software swapping.
4763 reg &= ~PCI_REV_DESC;
4764 err = pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
4766 dev_err(&pdev->dev, "PCI write config failed\n");
4767 goto err_out_free_regions;
4771 wol_default = device_may_wakeup(&pdev->dev) ? WAKE_MAGIC : 0;
4775 hw = kzalloc(sizeof(*hw) + strlen(DRV_NAME "@pci:")
4776 + strlen(pci_name(pdev)) + 1, GFP_KERNEL);
4778 dev_err(&pdev->dev, "cannot allocate hardware struct\n");
4779 goto err_out_free_regions;
4783 sprintf(hw->irq_name, DRV_NAME "@pci:%s", pci_name(pdev));
4785 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
4787 dev_err(&pdev->dev, "cannot map device registers\n");
4788 goto err_out_free_hw;
4791 err = sky2_init(hw);
4793 goto err_out_iounmap;
4795 /* ring for status responses */
4796 hw->st_size = hw->ports * roundup_pow_of_two(3*RX_MAX_PENDING + TX_MAX_PENDING);
4797 hw->st_le = pci_alloc_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
4802 dev_info(&pdev->dev, "Yukon-2 %s chip revision %d\n",
4803 sky2_name(hw->chip_id, buf1, sizeof(buf1)), hw->chip_rev);
4807 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
4810 goto err_out_free_pci;
4813 if (!disable_msi && pci_enable_msi(pdev) == 0) {
4814 err = sky2_test_msi(hw);
4815 if (err == -EOPNOTSUPP)
4816 pci_disable_msi(pdev);
4818 goto err_out_free_netdev;
4821 err = register_netdev(dev);
4823 dev_err(&pdev->dev, "cannot register net device\n");
4824 goto err_out_free_netdev;
4827 netif_carrier_off(dev);
4829 netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
4831 err = request_irq(pdev->irq, sky2_intr,
4832 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
4835 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4836 goto err_out_unregister;
4838 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4839 napi_enable(&hw->napi);
4841 sky2_show_addr(dev);
4843 if (hw->ports > 1) {
4844 struct net_device *dev1;
4847 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
4848 if (dev1 && (err = register_netdev(dev1)) == 0)
4849 sky2_show_addr(dev1);
4851 dev_warn(&pdev->dev,
4852 "register of second port failed (%d)\n", err);
4860 setup_timer(&hw->watchdog_timer, sky2_watchdog, (unsigned long) hw);
4861 INIT_WORK(&hw->restart_work, sky2_restart);
4863 pci_set_drvdata(pdev, hw);
4864 pdev->d3_delay = 150;
4869 if (hw->flags & SKY2_HW_USE_MSI)
4870 pci_disable_msi(pdev);
4871 unregister_netdev(dev);
4872 err_out_free_netdev:
4875 pci_free_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
4876 hw->st_le, hw->st_dma);
4878 sky2_write8(hw, B0_CTST, CS_RST_SET);
4883 err_out_free_regions:
4884 pci_release_regions(pdev);
4886 pci_disable_device(pdev);
4888 pci_set_drvdata(pdev, NULL);
4892 static void __devexit sky2_remove(struct pci_dev *pdev)
4894 struct sky2_hw *hw = pci_get_drvdata(pdev);
4900 del_timer_sync(&hw->watchdog_timer);
4901 cancel_work_sync(&hw->restart_work);
4903 for (i = hw->ports-1; i >= 0; --i)
4904 unregister_netdev(hw->dev[i]);
4906 sky2_write32(hw, B0_IMSK, 0);
4910 sky2_write8(hw, B0_CTST, CS_RST_SET);
4911 sky2_read8(hw, B0_CTST);
4913 free_irq(pdev->irq, hw);
4914 if (hw->flags & SKY2_HW_USE_MSI)
4915 pci_disable_msi(pdev);
4916 pci_free_consistent(pdev, hw->st_size * sizeof(struct sky2_status_le),
4917 hw->st_le, hw->st_dma);
4918 pci_release_regions(pdev);
4919 pci_disable_device(pdev);
4921 for (i = hw->ports-1; i >= 0; --i)
4922 free_netdev(hw->dev[i]);
4927 pci_set_drvdata(pdev, NULL);
4930 static int sky2_suspend(struct device *dev)
4932 struct pci_dev *pdev = to_pci_dev(dev);
4933 struct sky2_hw *hw = pci_get_drvdata(pdev);
4939 del_timer_sync(&hw->watchdog_timer);
4940 cancel_work_sync(&hw->restart_work);
4945 for (i = 0; i < hw->ports; i++) {
4946 struct net_device *dev = hw->dev[i];
4947 struct sky2_port *sky2 = netdev_priv(dev);
4950 sky2_wol_init(sky2);
4959 #ifdef CONFIG_PM_SLEEP
4960 static int sky2_resume(struct device *dev)
4962 struct pci_dev *pdev = to_pci_dev(dev);
4963 struct sky2_hw *hw = pci_get_drvdata(pdev);
4969 /* Re-enable all clocks */
4970 err = pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
4972 dev_err(&pdev->dev, "PCI write config failed\n");
4984 dev_err(&pdev->dev, "resume failed (%d)\n", err);
4985 pci_disable_device(pdev);
4989 static SIMPLE_DEV_PM_OPS(sky2_pm_ops, sky2_suspend, sky2_resume);
4990 #define SKY2_PM_OPS (&sky2_pm_ops)
4994 #define SKY2_PM_OPS NULL
4997 static void sky2_shutdown(struct pci_dev *pdev)
4999 sky2_suspend(&pdev->dev);
5000 pci_wake_from_d3(pdev, device_may_wakeup(&pdev->dev));
5001 pci_set_power_state(pdev, PCI_D3hot);
5004 static struct pci_driver sky2_driver = {
5006 .id_table = sky2_id_table,
5007 .probe = sky2_probe,
5008 .remove = __devexit_p(sky2_remove),
5009 .shutdown = sky2_shutdown,
5010 .driver.pm = SKY2_PM_OPS,
5013 static int __init sky2_init_module(void)
5015 pr_info("driver version " DRV_VERSION "\n");
5018 return pci_register_driver(&sky2_driver);
5021 static void __exit sky2_cleanup_module(void)
5023 pci_unregister_driver(&sky2_driver);
5024 sky2_debug_cleanup();
5027 module_init(sky2_init_module);
5028 module_exit(sky2_cleanup_module);
5030 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
5031 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
5032 MODULE_LICENSE("GPL");
5033 MODULE_VERSION(DRV_VERSION);