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 #include <linux/crc32.h>
26 #include <linux/kernel.h>
27 #include <linux/module.h>
28 #include <linux/netdevice.h>
29 #include <linux/dma-mapping.h>
30 #include <linux/etherdevice.h>
31 #include <linux/ethtool.h>
32 #include <linux/pci.h>
35 #include <linux/tcp.h>
37 #include <linux/delay.h>
38 #include <linux/workqueue.h>
39 #include <linux/if_vlan.h>
40 #include <linux/prefetch.h>
41 #include <linux/debugfs.h>
42 #include <linux/mii.h>
46 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
47 #define SKY2_VLAN_TAG_USED 1
52 #define DRV_NAME "sky2"
53 #define DRV_VERSION "1.26"
54 #define PFX DRV_NAME " "
57 * The Yukon II chipset takes 64 bit command blocks (called list elements)
58 * that are organized into three (receive, transmit, status) different rings
62 #define RX_LE_SIZE 1024
63 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
64 #define RX_MAX_PENDING (RX_LE_SIZE/6 - 2)
65 #define RX_DEF_PENDING RX_MAX_PENDING
67 /* This is the worst case number of transmit list elements for a single skb:
68 VLAN:GSO + CKSUM + Data + skb_frags * DMA */
69 #define MAX_SKB_TX_LE (2 + (sizeof(dma_addr_t)/sizeof(u32))*(MAX_SKB_FRAGS+1))
70 #define TX_MIN_PENDING (MAX_SKB_TX_LE+1)
71 #define TX_MAX_PENDING 4096
72 #define TX_DEF_PENDING 127
74 #define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
75 #define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
76 #define TX_WATCHDOG (5 * HZ)
77 #define NAPI_WEIGHT 64
78 #define PHY_RETRIES 1000
80 #define SKY2_EEPROM_MAGIC 0x9955aabb
83 #define RING_NEXT(x,s) (((x)+1) & ((s)-1))
85 static const u32 default_msg =
86 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
87 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
88 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
90 static int debug = -1; /* defaults above */
91 module_param(debug, int, 0);
92 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
94 static int copybreak __read_mostly = 128;
95 module_param(copybreak, int, 0);
96 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
98 static int disable_msi = 0;
99 module_param(disable_msi, int, 0);
100 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
102 static DEFINE_PCI_DEVICE_TABLE(sky2_id_table) = {
103 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
104 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
105 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E01) }, /* SK-9E21M */
106 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
107 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
108 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
109 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B03) }, /* DGE-550T */
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4354) }, /* 88E8040 */
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4355) }, /* 88E8040T */
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4356) }, /* 88EC033 */
125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4357) }, /* 88E8042 */
126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x435A) }, /* 88E8048 */
127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) }, /* 88E8052 */
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) }, /* 88E8050 */
129 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) }, /* 88E8053 */
130 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) }, /* 88E8055 */
131 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) }, /* 88E8056 */
132 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4365) }, /* 88E8070 */
133 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) }, /* 88EC036 */
134 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) }, /* 88EC032 */
135 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) }, /* 88EC034 */
136 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4369) }, /* 88EC042 */
137 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436A) }, /* 88E8058 */
138 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436B) }, /* 88E8071 */
139 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436C) }, /* 88E8072 */
140 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436D) }, /* 88E8055 */
141 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4370) }, /* 88E8075 */
142 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4380) }, /* 88E8057 */
143 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4381) }, /* 88E8059 */
147 MODULE_DEVICE_TABLE(pci, sky2_id_table);
149 /* Avoid conditionals by using array */
150 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
151 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
152 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
154 static void sky2_set_multicast(struct net_device *dev);
156 /* Access to PHY via serial interconnect */
157 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
161 gma_write16(hw, port, GM_SMI_DATA, val);
162 gma_write16(hw, port, GM_SMI_CTRL,
163 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
165 for (i = 0; i < PHY_RETRIES; i++) {
166 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
170 if (!(ctrl & GM_SMI_CT_BUSY))
176 dev_warn(&hw->pdev->dev,"%s: phy write timeout\n", hw->dev[port]->name);
180 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
184 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
188 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
189 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
191 for (i = 0; i < PHY_RETRIES; i++) {
192 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
196 if (ctrl & GM_SMI_CT_RD_VAL) {
197 *val = gma_read16(hw, port, GM_SMI_DATA);
204 dev_warn(&hw->pdev->dev, "%s: phy read timeout\n", hw->dev[port]->name);
207 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
211 static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
214 __gm_phy_read(hw, port, reg, &v);
219 static void sky2_power_on(struct sky2_hw *hw)
221 /* switch power to VCC (WA for VAUX problem) */
222 sky2_write8(hw, B0_POWER_CTRL,
223 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
225 /* disable Core Clock Division, */
226 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
228 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
229 /* enable bits are inverted */
230 sky2_write8(hw, B2_Y2_CLK_GATE,
231 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
232 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
233 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
235 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
237 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
240 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
242 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
243 /* set all bits to 0 except bits 15..12 and 8 */
244 reg &= P_ASPM_CONTROL_MSK;
245 sky2_pci_write32(hw, PCI_DEV_REG4, reg);
247 reg = sky2_pci_read32(hw, PCI_DEV_REG5);
248 /* set all bits to 0 except bits 28 & 27 */
249 reg &= P_CTL_TIM_VMAIN_AV_MSK;
250 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
252 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
254 sky2_write16(hw, B0_CTST, Y2_HW_WOL_ON);
256 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
257 reg = sky2_read32(hw, B2_GP_IO);
258 reg |= GLB_GPIO_STAT_RACE_DIS;
259 sky2_write32(hw, B2_GP_IO, reg);
261 sky2_read32(hw, B2_GP_IO);
264 /* Turn on "driver loaded" LED */
265 sky2_write16(hw, B0_CTST, Y2_LED_STAT_ON);
268 static void sky2_power_aux(struct sky2_hw *hw)
270 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
271 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
273 /* enable bits are inverted */
274 sky2_write8(hw, B2_Y2_CLK_GATE,
275 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
276 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
277 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
279 /* switch power to VAUX if supported and PME from D3cold */
280 if ( (sky2_read32(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
281 pci_pme_capable(hw->pdev, PCI_D3cold))
282 sky2_write8(hw, B0_POWER_CTRL,
283 (PC_VAUX_ENA | PC_VCC_ENA |
284 PC_VAUX_ON | PC_VCC_OFF));
286 /* turn off "driver loaded LED" */
287 sky2_write16(hw, B0_CTST, Y2_LED_STAT_OFF);
290 static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
294 /* disable all GMAC IRQ's */
295 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
297 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
298 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
299 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
300 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
302 reg = gma_read16(hw, port, GM_RX_CTRL);
303 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
304 gma_write16(hw, port, GM_RX_CTRL, reg);
307 /* flow control to advertise bits */
308 static const u16 copper_fc_adv[] = {
310 [FC_TX] = PHY_M_AN_ASP,
311 [FC_RX] = PHY_M_AN_PC,
312 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
315 /* flow control to advertise bits when using 1000BaseX */
316 static const u16 fiber_fc_adv[] = {
317 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
318 [FC_TX] = PHY_M_P_ASYM_MD_X,
319 [FC_RX] = PHY_M_P_SYM_MD_X,
320 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
323 /* flow control to GMA disable bits */
324 static const u16 gm_fc_disable[] = {
325 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
326 [FC_TX] = GM_GPCR_FC_RX_DIS,
327 [FC_RX] = GM_GPCR_FC_TX_DIS,
332 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
334 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
335 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
337 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
338 !(hw->flags & SKY2_HW_NEWER_PHY)) {
339 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
341 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
343 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
345 /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
346 if (hw->chip_id == CHIP_ID_YUKON_EC)
347 /* set downshift counter to 3x and enable downshift */
348 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
350 /* set master & slave downshift counter to 1x */
351 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
353 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
356 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
357 if (sky2_is_copper(hw)) {
358 if (!(hw->flags & SKY2_HW_GIGABIT)) {
359 /* enable automatic crossover */
360 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
362 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
363 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
366 /* Enable Class A driver for FE+ A0 */
367 spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2);
368 spec |= PHY_M_FESC_SEL_CL_A;
369 gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec);
372 /* disable energy detect */
373 ctrl &= ~PHY_M_PC_EN_DET_MSK;
375 /* enable automatic crossover */
376 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
378 /* downshift on PHY 88E1112 and 88E1149 is changed */
379 if ( (sky2->flags & SKY2_FLAG_AUTO_SPEED) &&
380 (hw->flags & SKY2_HW_NEWER_PHY)) {
381 /* set downshift counter to 3x and enable downshift */
382 ctrl &= ~PHY_M_PC_DSC_MSK;
383 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
387 /* workaround for deviation #4.88 (CRC errors) */
388 /* disable Automatic Crossover */
390 ctrl &= ~PHY_M_PC_MDIX_MSK;
393 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
395 /* special setup for PHY 88E1112 Fiber */
396 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
397 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
399 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
400 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
401 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
402 ctrl &= ~PHY_M_MAC_MD_MSK;
403 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
404 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
406 if (hw->pmd_type == 'P') {
407 /* select page 1 to access Fiber registers */
408 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
410 /* for SFP-module set SIGDET polarity to low */
411 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
412 ctrl |= PHY_M_FIB_SIGD_POL;
413 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
416 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
424 if (sky2->flags & SKY2_FLAG_AUTO_SPEED) {
425 if (sky2_is_copper(hw)) {
426 if (sky2->advertising & ADVERTISED_1000baseT_Full)
427 ct1000 |= PHY_M_1000C_AFD;
428 if (sky2->advertising & ADVERTISED_1000baseT_Half)
429 ct1000 |= PHY_M_1000C_AHD;
430 if (sky2->advertising & ADVERTISED_100baseT_Full)
431 adv |= PHY_M_AN_100_FD;
432 if (sky2->advertising & ADVERTISED_100baseT_Half)
433 adv |= PHY_M_AN_100_HD;
434 if (sky2->advertising & ADVERTISED_10baseT_Full)
435 adv |= PHY_M_AN_10_FD;
436 if (sky2->advertising & ADVERTISED_10baseT_Half)
437 adv |= PHY_M_AN_10_HD;
439 } else { /* special defines for FIBER (88E1040S only) */
440 if (sky2->advertising & ADVERTISED_1000baseT_Full)
441 adv |= PHY_M_AN_1000X_AFD;
442 if (sky2->advertising & ADVERTISED_1000baseT_Half)
443 adv |= PHY_M_AN_1000X_AHD;
446 /* Restart Auto-negotiation */
447 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
449 /* forced speed/duplex settings */
450 ct1000 = PHY_M_1000C_MSE;
452 /* Disable auto update for duplex flow control and duplex */
453 reg |= GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_SPD_DIS;
455 switch (sky2->speed) {
457 ctrl |= PHY_CT_SP1000;
458 reg |= GM_GPCR_SPEED_1000;
461 ctrl |= PHY_CT_SP100;
462 reg |= GM_GPCR_SPEED_100;
466 if (sky2->duplex == DUPLEX_FULL) {
467 reg |= GM_GPCR_DUP_FULL;
468 ctrl |= PHY_CT_DUP_MD;
469 } else if (sky2->speed < SPEED_1000)
470 sky2->flow_mode = FC_NONE;
473 if (sky2->flags & SKY2_FLAG_AUTO_PAUSE) {
474 if (sky2_is_copper(hw))
475 adv |= copper_fc_adv[sky2->flow_mode];
477 adv |= fiber_fc_adv[sky2->flow_mode];
479 reg |= GM_GPCR_AU_FCT_DIS;
480 reg |= gm_fc_disable[sky2->flow_mode];
482 /* Forward pause packets to GMAC? */
483 if (sky2->flow_mode & FC_RX)
484 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
486 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
489 gma_write16(hw, port, GM_GP_CTRL, reg);
491 if (hw->flags & SKY2_HW_GIGABIT)
492 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
494 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
495 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
497 /* Setup Phy LED's */
498 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
501 switch (hw->chip_id) {
502 case CHIP_ID_YUKON_FE:
503 /* on 88E3082 these bits are at 11..9 (shifted left) */
504 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
506 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
508 /* delete ACT LED control bits */
509 ctrl &= ~PHY_M_FELP_LED1_MSK;
510 /* change ACT LED control to blink mode */
511 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
512 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
515 case CHIP_ID_YUKON_FE_P:
516 /* Enable Link Partner Next Page */
517 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
518 ctrl |= PHY_M_PC_ENA_LIP_NP;
520 /* disable Energy Detect and enable scrambler */
521 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
522 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
524 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
525 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
526 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
527 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
529 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
532 case CHIP_ID_YUKON_XL:
533 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
535 /* select page 3 to access LED control register */
536 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
538 /* set LED Function Control register */
539 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
540 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
541 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
542 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
543 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
545 /* set Polarity Control register */
546 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
547 (PHY_M_POLC_LS1_P_MIX(4) |
548 PHY_M_POLC_IS0_P_MIX(4) |
549 PHY_M_POLC_LOS_CTRL(2) |
550 PHY_M_POLC_INIT_CTRL(2) |
551 PHY_M_POLC_STA1_CTRL(2) |
552 PHY_M_POLC_STA0_CTRL(2)));
554 /* restore page register */
555 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
558 case CHIP_ID_YUKON_EC_U:
559 case CHIP_ID_YUKON_EX:
560 case CHIP_ID_YUKON_SUPR:
561 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
563 /* select page 3 to access LED control register */
564 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
566 /* set LED Function Control register */
567 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
568 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
569 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
570 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
571 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
573 /* set Blink Rate in LED Timer Control Register */
574 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
575 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
576 /* restore page register */
577 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
581 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
582 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
584 /* turn off the Rx LED (LED_RX) */
585 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
588 if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_UL_2) {
589 /* apply fixes in PHY AFE */
590 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
592 /* increase differential signal amplitude in 10BASE-T */
593 gm_phy_write(hw, port, 0x18, 0xaa99);
594 gm_phy_write(hw, port, 0x17, 0x2011);
596 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
597 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
598 gm_phy_write(hw, port, 0x18, 0xa204);
599 gm_phy_write(hw, port, 0x17, 0x2002);
602 /* set page register to 0 */
603 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
604 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
605 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
606 /* apply workaround for integrated resistors calibration */
607 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
608 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
609 } else if (hw->chip_id == CHIP_ID_YUKON_OPT && hw->chip_rev == 0) {
610 /* apply fixes in PHY AFE */
611 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0x00ff);
613 /* apply RDAC termination workaround */
614 gm_phy_write(hw, port, 24, 0x2800);
615 gm_phy_write(hw, port, 23, 0x2001);
617 /* set page register back to 0 */
618 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
619 } else if (hw->chip_id != CHIP_ID_YUKON_EX &&
620 hw->chip_id < CHIP_ID_YUKON_SUPR) {
621 /* no effect on Yukon-XL */
622 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
624 if (!(sky2->flags & SKY2_FLAG_AUTO_SPEED) ||
625 sky2->speed == SPEED_100) {
626 /* turn on 100 Mbps LED (LED_LINK100) */
627 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
631 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
635 /* Enable phy interrupt on auto-negotiation complete (or link up) */
636 if (sky2->flags & SKY2_FLAG_AUTO_SPEED)
637 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
639 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
642 static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
643 static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
645 static void sky2_phy_power_up(struct sky2_hw *hw, unsigned port)
649 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
650 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
651 reg1 &= ~phy_power[port];
653 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
654 reg1 |= coma_mode[port];
656 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
657 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
658 sky2_pci_read32(hw, PCI_DEV_REG1);
660 if (hw->chip_id == CHIP_ID_YUKON_FE)
661 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_ANE);
662 else if (hw->flags & SKY2_HW_ADV_POWER_CTL)
663 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
666 static void sky2_phy_power_down(struct sky2_hw *hw, unsigned port)
671 /* release GPHY Control reset */
672 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
674 /* release GMAC reset */
675 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
677 if (hw->flags & SKY2_HW_NEWER_PHY) {
678 /* select page 2 to access MAC control register */
679 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
681 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
682 /* allow GMII Power Down */
683 ctrl &= ~PHY_M_MAC_GMIF_PUP;
684 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
686 /* set page register back to 0 */
687 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
690 /* setup General Purpose Control Register */
691 gma_write16(hw, port, GM_GP_CTRL,
692 GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 |
693 GM_GPCR_AU_DUP_DIS | GM_GPCR_AU_FCT_DIS |
696 if (hw->chip_id != CHIP_ID_YUKON_EC) {
697 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
698 /* select page 2 to access MAC control register */
699 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
701 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
702 /* enable Power Down */
703 ctrl |= PHY_M_PC_POW_D_ENA;
704 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
706 /* set page register back to 0 */
707 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
710 /* set IEEE compatible Power Down Mode (dev. #4.99) */
711 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_PDOWN);
714 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
715 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
716 reg1 |= phy_power[port]; /* set PHY to PowerDown/COMA Mode */
717 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
718 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
721 /* Force a renegotiation */
722 static void sky2_phy_reinit(struct sky2_port *sky2)
724 spin_lock_bh(&sky2->phy_lock);
725 sky2_phy_init(sky2->hw, sky2->port);
726 spin_unlock_bh(&sky2->phy_lock);
729 /* Put device in state to listen for Wake On Lan */
730 static void sky2_wol_init(struct sky2_port *sky2)
732 struct sky2_hw *hw = sky2->hw;
733 unsigned port = sky2->port;
734 enum flow_control save_mode;
737 /* Bring hardware out of reset */
738 sky2_write16(hw, B0_CTST, CS_RST_CLR);
739 sky2_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
741 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
742 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
745 * sky2_reset will re-enable on resume
747 save_mode = sky2->flow_mode;
748 ctrl = sky2->advertising;
750 sky2->advertising &= ~(ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full);
751 sky2->flow_mode = FC_NONE;
753 spin_lock_bh(&sky2->phy_lock);
754 sky2_phy_power_up(hw, port);
755 sky2_phy_init(hw, port);
756 spin_unlock_bh(&sky2->phy_lock);
758 sky2->flow_mode = save_mode;
759 sky2->advertising = ctrl;
761 /* Set GMAC to no flow control and auto update for speed/duplex */
762 gma_write16(hw, port, GM_GP_CTRL,
763 GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
764 GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
766 /* Set WOL address */
767 memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
768 sky2->netdev->dev_addr, ETH_ALEN);
770 /* Turn on appropriate WOL control bits */
771 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
773 if (sky2->wol & WAKE_PHY)
774 ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
776 ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
778 if (sky2->wol & WAKE_MAGIC)
779 ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
781 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;
783 ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
784 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
786 /* Disable PiG firmware */
787 sky2_write16(hw, B0_CTST, Y2_HW_WOL_OFF);
790 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
793 static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
795 struct net_device *dev = hw->dev[port];
797 if ( (hw->chip_id == CHIP_ID_YUKON_EX &&
798 hw->chip_rev != CHIP_REV_YU_EX_A0) ||
799 hw->chip_id >= CHIP_ID_YUKON_FE_P) {
800 /* Yukon-Extreme B0 and further Extreme devices */
801 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
802 } else if (dev->mtu > ETH_DATA_LEN) {
803 /* set Tx GMAC FIFO Almost Empty Threshold */
804 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
805 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
807 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
809 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
812 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
814 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
818 const u8 *addr = hw->dev[port]->dev_addr;
820 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
821 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
823 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
825 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
826 /* WA DEV_472 -- looks like crossed wires on port 2 */
827 /* clear GMAC 1 Control reset */
828 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
830 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
831 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
832 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
833 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
834 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
837 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
839 /* Enable Transmit FIFO Underrun */
840 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
842 spin_lock_bh(&sky2->phy_lock);
843 sky2_phy_power_up(hw, port);
844 sky2_phy_init(hw, port);
845 spin_unlock_bh(&sky2->phy_lock);
848 reg = gma_read16(hw, port, GM_PHY_ADDR);
849 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
851 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
852 gma_read16(hw, port, i);
853 gma_write16(hw, port, GM_PHY_ADDR, reg);
855 /* transmit control */
856 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
858 /* receive control reg: unicast + multicast + no FCS */
859 gma_write16(hw, port, GM_RX_CTRL,
860 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
862 /* transmit flow control */
863 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
865 /* transmit parameter */
866 gma_write16(hw, port, GM_TX_PARAM,
867 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
868 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
869 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
870 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
872 /* serial mode register */
873 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
874 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
876 if (hw->dev[port]->mtu > ETH_DATA_LEN)
877 reg |= GM_SMOD_JUMBO_ENA;
879 gma_write16(hw, port, GM_SERIAL_MODE, reg);
881 /* virtual address for data */
882 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
884 /* physical address: used for pause frames */
885 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
887 /* ignore counter overflows */
888 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
889 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
890 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
892 /* Configure Rx MAC FIFO */
893 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
894 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
895 if (hw->chip_id == CHIP_ID_YUKON_EX ||
896 hw->chip_id == CHIP_ID_YUKON_FE_P)
897 rx_reg |= GMF_RX_OVER_ON;
899 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
901 if (hw->chip_id == CHIP_ID_YUKON_XL) {
902 /* Hardware errata - clear flush mask */
903 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0);
905 /* Flush Rx MAC FIFO on any flow control or error */
906 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
909 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
910 reg = RX_GMF_FL_THR_DEF + 1;
911 /* Another magic mystery workaround from sk98lin */
912 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
913 hw->chip_rev == CHIP_REV_YU_FE2_A0)
915 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
917 /* Configure Tx MAC FIFO */
918 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
919 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
921 /* On chips without ram buffer, pause is controled by MAC level */
922 if (!(hw->flags & SKY2_HW_RAM_BUFFER)) {
923 /* Pause threshold is scaled by 8 in bytes */
924 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
925 hw->chip_rev == CHIP_REV_YU_FE2_A0)
929 sky2_write16(hw, SK_REG(port, RX_GMF_UP_THR), reg);
930 sky2_write16(hw, SK_REG(port, RX_GMF_LP_THR), 768 / 8);
932 sky2_set_tx_stfwd(hw, port);
935 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
936 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
937 /* disable dynamic watermark */
938 reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA));
939 reg &= ~TX_DYN_WM_ENA;
940 sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg);
944 /* Assign Ram Buffer allocation to queue */
945 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
949 /* convert from K bytes to qwords used for hw register */
952 end = start + space - 1;
954 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
955 sky2_write32(hw, RB_ADDR(q, RB_START), start);
956 sky2_write32(hw, RB_ADDR(q, RB_END), end);
957 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
958 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
960 if (q == Q_R1 || q == Q_R2) {
961 u32 tp = space - space/4;
963 /* On receive queue's set the thresholds
964 * give receiver priority when > 3/4 full
965 * send pause when down to 2K
967 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
968 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
971 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
972 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
974 /* Enable store & forward on Tx queue's because
975 * Tx FIFO is only 1K on Yukon
977 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
980 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
981 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
984 /* Setup Bus Memory Interface */
985 static void sky2_qset(struct sky2_hw *hw, u16 q)
987 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
988 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
989 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
990 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
993 /* Setup prefetch unit registers. This is the interface between
994 * hardware and driver list elements
996 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
997 dma_addr_t addr, u32 last)
999 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1000 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
1001 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), upper_32_bits(addr));
1002 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), lower_32_bits(addr));
1003 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
1004 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
1006 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
1009 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2, u16 *slot)
1011 struct sky2_tx_le *le = sky2->tx_le + *slot;
1013 *slot = RING_NEXT(*slot, sky2->tx_ring_size);
1018 static void tx_init(struct sky2_port *sky2)
1020 struct sky2_tx_le *le;
1022 sky2->tx_prod = sky2->tx_cons = 0;
1023 sky2->tx_tcpsum = 0;
1024 sky2->tx_last_mss = 0;
1026 le = get_tx_le(sky2, &sky2->tx_prod);
1028 le->opcode = OP_ADDR64 | HW_OWNER;
1029 sky2->tx_last_upper = 0;
1032 /* Update chip's next pointer */
1033 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
1035 /* Make sure write' to descriptors are complete before we tell hardware */
1037 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
1039 /* Synchronize I/O on since next processor may write to tail */
1044 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
1046 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
1047 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
1052 static unsigned sky2_get_rx_threshold(struct sky2_port* sky2)
1056 /* Space needed for frame data + headers rounded up */
1057 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1059 /* Stopping point for hardware truncation */
1060 return (size - 8) / sizeof(u32);
1063 static unsigned sky2_get_rx_data_size(struct sky2_port* sky2)
1065 struct rx_ring_info *re;
1068 /* Space needed for frame data + headers rounded up */
1069 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1071 sky2->rx_nfrags = size >> PAGE_SHIFT;
1072 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1074 /* Compute residue after pages */
1075 size -= sky2->rx_nfrags << PAGE_SHIFT;
1077 /* Optimize to handle small packets and headers */
1078 if (size < copybreak)
1080 if (size < ETH_HLEN)
1086 /* Build description to hardware for one receive segment */
1087 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
1088 dma_addr_t map, unsigned len)
1090 struct sky2_rx_le *le;
1092 if (sizeof(dma_addr_t) > sizeof(u32)) {
1093 le = sky2_next_rx(sky2);
1094 le->addr = cpu_to_le32(upper_32_bits(map));
1095 le->opcode = OP_ADDR64 | HW_OWNER;
1098 le = sky2_next_rx(sky2);
1099 le->addr = cpu_to_le32(lower_32_bits(map));
1100 le->length = cpu_to_le16(len);
1101 le->opcode = op | HW_OWNER;
1104 /* Build description to hardware for one possibly fragmented skb */
1105 static void sky2_rx_submit(struct sky2_port *sky2,
1106 const struct rx_ring_info *re)
1110 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
1112 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
1113 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
1117 static int sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
1120 struct sk_buff *skb = re->skb;
1123 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
1124 if (pci_dma_mapping_error(pdev, re->data_addr))
1127 pci_unmap_len_set(re, data_size, size);
1129 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1130 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1132 re->frag_addr[i] = pci_map_page(pdev, frag->page,
1135 PCI_DMA_FROMDEVICE);
1137 if (pci_dma_mapping_error(pdev, re->frag_addr[i]))
1138 goto map_page_error;
1144 pci_unmap_page(pdev, re->frag_addr[i],
1145 skb_shinfo(skb)->frags[i].size,
1146 PCI_DMA_FROMDEVICE);
1149 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
1150 PCI_DMA_FROMDEVICE);
1153 if (net_ratelimit())
1154 dev_warn(&pdev->dev, "%s: rx mapping error\n",
1159 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1161 struct sk_buff *skb = re->skb;
1164 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
1165 PCI_DMA_FROMDEVICE);
1167 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1168 pci_unmap_page(pdev, re->frag_addr[i],
1169 skb_shinfo(skb)->frags[i].size,
1170 PCI_DMA_FROMDEVICE);
1173 /* Tell chip where to start receive checksum.
1174 * Actually has two checksums, but set both same to avoid possible byte
1177 static void rx_set_checksum(struct sky2_port *sky2)
1179 struct sky2_rx_le *le = sky2_next_rx(sky2);
1181 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1183 le->opcode = OP_TCPSTART | HW_OWNER;
1185 sky2_write32(sky2->hw,
1186 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1187 (sky2->flags & SKY2_FLAG_RX_CHECKSUM)
1188 ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
1192 * The RX Stop command will not work for Yukon-2 if the BMU does not
1193 * reach the end of packet and since we can't make sure that we have
1194 * incoming data, we must reset the BMU while it is not doing a DMA
1195 * transfer. Since it is possible that the RX path is still active,
1196 * the RX RAM buffer will be stopped first, so any possible incoming
1197 * data will not trigger a DMA. After the RAM buffer is stopped, the
1198 * BMU is polled until any DMA in progress is ended and only then it
1201 static void sky2_rx_stop(struct sky2_port *sky2)
1203 struct sky2_hw *hw = sky2->hw;
1204 unsigned rxq = rxqaddr[sky2->port];
1207 /* disable the RAM Buffer receive queue */
1208 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1210 for (i = 0; i < 0xffff; i++)
1211 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1212 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1215 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
1216 sky2->netdev->name);
1218 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1220 /* reset the Rx prefetch unit */
1221 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1225 /* Clean out receive buffer area, assumes receiver hardware stopped */
1226 static void sky2_rx_clean(struct sky2_port *sky2)
1230 memset(sky2->rx_le, 0, RX_LE_BYTES);
1231 for (i = 0; i < sky2->rx_pending; i++) {
1232 struct rx_ring_info *re = sky2->rx_ring + i;
1235 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1242 /* Basic MII support */
1243 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1245 struct mii_ioctl_data *data = if_mii(ifr);
1246 struct sky2_port *sky2 = netdev_priv(dev);
1247 struct sky2_hw *hw = sky2->hw;
1248 int err = -EOPNOTSUPP;
1250 if (!netif_running(dev))
1251 return -ENODEV; /* Phy still in reset */
1255 data->phy_id = PHY_ADDR_MARV;
1261 spin_lock_bh(&sky2->phy_lock);
1262 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1263 spin_unlock_bh(&sky2->phy_lock);
1265 data->val_out = val;
1270 spin_lock_bh(&sky2->phy_lock);
1271 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1273 spin_unlock_bh(&sky2->phy_lock);
1279 #ifdef SKY2_VLAN_TAG_USED
1280 static void sky2_set_vlan_mode(struct sky2_hw *hw, u16 port, bool onoff)
1283 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1285 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1288 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1290 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1295 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
1297 struct sky2_port *sky2 = netdev_priv(dev);
1298 struct sky2_hw *hw = sky2->hw;
1299 u16 port = sky2->port;
1301 netif_tx_lock_bh(dev);
1302 napi_disable(&hw->napi);
1305 sky2_set_vlan_mode(hw, port, grp != NULL);
1307 sky2_read32(hw, B0_Y2_SP_LISR);
1308 napi_enable(&hw->napi);
1309 netif_tx_unlock_bh(dev);
1313 /* Amount of required worst case padding in rx buffer */
1314 static inline unsigned sky2_rx_pad(const struct sky2_hw *hw)
1316 return (hw->flags & SKY2_HW_RAM_BUFFER) ? 8 : 2;
1320 * Allocate an skb for receiving. If the MTU is large enough
1321 * make the skb non-linear with a fragment list of pages.
1323 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2)
1325 struct sk_buff *skb;
1328 skb = netdev_alloc_skb(sky2->netdev,
1329 sky2->rx_data_size + sky2_rx_pad(sky2->hw));
1333 if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) {
1334 unsigned char *start;
1336 * Workaround for a bug in FIFO that cause hang
1337 * if the FIFO if the receive buffer is not 64 byte aligned.
1338 * The buffer returned from netdev_alloc_skb is
1339 * aligned except if slab debugging is enabled.
1341 start = PTR_ALIGN(skb->data, 8);
1342 skb_reserve(skb, start - skb->data);
1344 skb_reserve(skb, NET_IP_ALIGN);
1346 for (i = 0; i < sky2->rx_nfrags; i++) {
1347 struct page *page = alloc_page(GFP_ATOMIC);
1351 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1361 static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1363 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1367 * Allocate and setup receiver buffer pool.
1368 * Normal case this ends up creating one list element for skb
1369 * in the receive ring. Worst case if using large MTU and each
1370 * allocation falls on a different 64 bit region, that results
1371 * in 6 list elements per ring entry.
1372 * One element is used for checksum enable/disable, and one
1373 * extra to avoid wrap.
1375 static int sky2_rx_start(struct sky2_port *sky2)
1377 struct sky2_hw *hw = sky2->hw;
1378 struct rx_ring_info *re;
1379 unsigned rxq = rxqaddr[sky2->port];
1382 sky2->rx_put = sky2->rx_next = 0;
1385 /* On PCI express lowering the watermark gives better performance */
1386 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
1387 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1389 /* These chips have no ram buffer?
1390 * MAC Rx RAM Read is controlled by hardware */
1391 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1392 (hw->chip_rev == CHIP_REV_YU_EC_U_A1 ||
1393 hw->chip_rev == CHIP_REV_YU_EC_U_B0))
1394 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1396 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1398 if (!(hw->flags & SKY2_HW_NEW_LE))
1399 rx_set_checksum(sky2);
1401 sky2->rx_data_size = sky2_get_rx_data_size(sky2);
1404 for (i = 0; i < sky2->rx_pending; i++) {
1405 re = sky2->rx_ring + i;
1407 re->skb = sky2_rx_alloc(sky2);
1411 if (sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size)) {
1412 dev_kfree_skb(re->skb);
1417 sky2_rx_submit(sky2, re);
1421 * The receiver hangs if it receives frames larger than the
1422 * packet buffer. As a workaround, truncate oversize frames, but
1423 * the register is limited to 9 bits, so if you do frames > 2052
1424 * you better get the MTU right!
1426 thresh = sky2_get_rx_threshold(sky2);
1428 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1430 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1431 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1434 /* Tell chip about available buffers */
1435 sky2_rx_update(sky2, rxq);
1437 if (hw->chip_id == CHIP_ID_YUKON_EX ||
1438 hw->chip_id == CHIP_ID_YUKON_SUPR) {
1440 * Disable flushing of non ASF packets;
1441 * must be done after initializing the BMUs;
1442 * drivers without ASF support should do this too, otherwise
1443 * it may happen that they cannot run on ASF devices;
1444 * remember that the MAC FIFO isn't reset during initialization.
1446 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_MACSEC_FLUSH_OFF);
1449 if (hw->chip_id >= CHIP_ID_YUKON_SUPR) {
1450 /* Enable RX Home Address & Routing Header checksum fix */
1451 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_FL_CTRL),
1452 RX_IPV6_SA_MOB_ENA | RX_IPV6_DA_MOB_ENA);
1454 /* Enable TX Home Address & Routing Header checksum fix */
1455 sky2_write32(hw, Q_ADDR(txqaddr[sky2->port], Q_TEST),
1456 TBMU_TEST_HOME_ADD_FIX_EN | TBMU_TEST_ROUTING_ADD_FIX_EN);
1463 sky2_rx_clean(sky2);
1467 static int sky2_alloc_buffers(struct sky2_port *sky2)
1469 struct sky2_hw *hw = sky2->hw;
1471 /* must be power of 2 */
1472 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1473 sky2->tx_ring_size *
1474 sizeof(struct sky2_tx_le),
1479 sky2->tx_ring = kcalloc(sky2->tx_ring_size, sizeof(struct tx_ring_info),
1484 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1488 memset(sky2->rx_le, 0, RX_LE_BYTES);
1490 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1500 static void sky2_free_buffers(struct sky2_port *sky2)
1502 struct sky2_hw *hw = sky2->hw;
1505 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1506 sky2->rx_le, sky2->rx_le_map);
1510 pci_free_consistent(hw->pdev,
1511 sky2->tx_ring_size * sizeof(struct sky2_tx_le),
1512 sky2->tx_le, sky2->tx_le_map);
1515 kfree(sky2->tx_ring);
1516 kfree(sky2->rx_ring);
1518 sky2->tx_ring = NULL;
1519 sky2->rx_ring = NULL;
1522 /* Bring up network interface. */
1523 static int sky2_up(struct net_device *dev)
1525 struct sky2_port *sky2 = netdev_priv(dev);
1526 struct sky2_hw *hw = sky2->hw;
1527 unsigned port = sky2->port;
1530 struct net_device *otherdev = hw->dev[sky2->port^1];
1533 * On dual port PCI-X card, there is an problem where status
1534 * can be received out of order due to split transactions
1536 if (otherdev && netif_running(otherdev) &&
1537 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1540 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1541 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1542 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1546 netif_carrier_off(dev);
1548 err = sky2_alloc_buffers(sky2);
1554 sky2_mac_init(hw, port);
1556 /* Register is number of 4K blocks on internal RAM buffer. */
1557 ramsize = sky2_read8(hw, B2_E_0) * 4;
1561 pr_debug(PFX "%s: ram buffer %dK\n", dev->name, ramsize);
1563 rxspace = ramsize / 2;
1565 rxspace = 8 + (2*(ramsize - 16))/3;
1567 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1568 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1570 /* Make sure SyncQ is disabled */
1571 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1575 sky2_qset(hw, txqaddr[port]);
1577 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1578 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1579 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1581 /* Set almost empty threshold */
1582 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1583 hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1584 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1586 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1587 sky2->tx_ring_size - 1);
1589 #ifdef SKY2_VLAN_TAG_USED
1590 sky2_set_vlan_mode(hw, port, sky2->vlgrp != NULL);
1593 err = sky2_rx_start(sky2);
1597 /* Enable interrupts from phy/mac for port */
1598 imask = sky2_read32(hw, B0_IMSK);
1599 imask |= portirq_msk[port];
1600 sky2_write32(hw, B0_IMSK, imask);
1601 sky2_read32(hw, B0_IMSK);
1603 if (netif_msg_ifup(sky2))
1604 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
1609 sky2_free_buffers(sky2);
1613 /* Modular subtraction in ring */
1614 static inline int tx_inuse(const struct sky2_port *sky2)
1616 return (sky2->tx_prod - sky2->tx_cons) & (sky2->tx_ring_size - 1);
1619 /* Number of list elements available for next tx */
1620 static inline int tx_avail(const struct sky2_port *sky2)
1622 return sky2->tx_pending - tx_inuse(sky2);
1625 /* Estimate of number of transmit list elements required */
1626 static unsigned tx_le_req(const struct sk_buff *skb)
1630 count = (skb_shinfo(skb)->nr_frags + 1)
1631 * (sizeof(dma_addr_t) / sizeof(u32));
1633 if (skb_is_gso(skb))
1635 else if (sizeof(dma_addr_t) == sizeof(u32))
1636 ++count; /* possible vlan */
1638 if (skb->ip_summed == CHECKSUM_PARTIAL)
1644 static void sky2_tx_unmap(struct pci_dev *pdev, struct tx_ring_info *re)
1646 if (re->flags & TX_MAP_SINGLE)
1647 pci_unmap_single(pdev, pci_unmap_addr(re, mapaddr),
1648 pci_unmap_len(re, maplen),
1650 else if (re->flags & TX_MAP_PAGE)
1651 pci_unmap_page(pdev, pci_unmap_addr(re, mapaddr),
1652 pci_unmap_len(re, maplen),
1658 * Put one packet in ring for transmit.
1659 * A single packet can generate multiple list elements, and
1660 * the number of ring elements will probably be less than the number
1661 * of list elements used.
1663 static netdev_tx_t sky2_xmit_frame(struct sk_buff *skb,
1664 struct net_device *dev)
1666 struct sky2_port *sky2 = netdev_priv(dev);
1667 struct sky2_hw *hw = sky2->hw;
1668 struct sky2_tx_le *le = NULL;
1669 struct tx_ring_info *re;
1677 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1678 return NETDEV_TX_BUSY;
1680 len = skb_headlen(skb);
1681 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1683 if (pci_dma_mapping_error(hw->pdev, mapping))
1686 slot = sky2->tx_prod;
1687 if (unlikely(netif_msg_tx_queued(sky2)))
1688 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1689 dev->name, slot, skb->len);
1691 /* Send high bits if needed */
1692 upper = upper_32_bits(mapping);
1693 if (upper != sky2->tx_last_upper) {
1694 le = get_tx_le(sky2, &slot);
1695 le->addr = cpu_to_le32(upper);
1696 sky2->tx_last_upper = upper;
1697 le->opcode = OP_ADDR64 | HW_OWNER;
1700 /* Check for TCP Segmentation Offload */
1701 mss = skb_shinfo(skb)->gso_size;
1704 if (!(hw->flags & SKY2_HW_NEW_LE))
1705 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1707 if (mss != sky2->tx_last_mss) {
1708 le = get_tx_le(sky2, &slot);
1709 le->addr = cpu_to_le32(mss);
1711 if (hw->flags & SKY2_HW_NEW_LE)
1712 le->opcode = OP_MSS | HW_OWNER;
1714 le->opcode = OP_LRGLEN | HW_OWNER;
1715 sky2->tx_last_mss = mss;
1720 #ifdef SKY2_VLAN_TAG_USED
1721 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1722 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1724 le = get_tx_le(sky2, &slot);
1726 le->opcode = OP_VLAN|HW_OWNER;
1728 le->opcode |= OP_VLAN;
1729 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1734 /* Handle TCP checksum offload */
1735 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1736 /* On Yukon EX (some versions) encoding change. */
1737 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1738 ctrl |= CALSUM; /* auto checksum */
1740 const unsigned offset = skb_transport_offset(skb);
1743 tcpsum = offset << 16; /* sum start */
1744 tcpsum |= offset + skb->csum_offset; /* sum write */
1746 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1747 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1750 if (tcpsum != sky2->tx_tcpsum) {
1751 sky2->tx_tcpsum = tcpsum;
1753 le = get_tx_le(sky2, &slot);
1754 le->addr = cpu_to_le32(tcpsum);
1755 le->length = 0; /* initial checksum value */
1756 le->ctrl = 1; /* one packet */
1757 le->opcode = OP_TCPLISW | HW_OWNER;
1762 re = sky2->tx_ring + slot;
1763 re->flags = TX_MAP_SINGLE;
1764 pci_unmap_addr_set(re, mapaddr, mapping);
1765 pci_unmap_len_set(re, maplen, len);
1767 le = get_tx_le(sky2, &slot);
1768 le->addr = cpu_to_le32(lower_32_bits(mapping));
1769 le->length = cpu_to_le16(len);
1771 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1774 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1775 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1777 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1778 frag->size, PCI_DMA_TODEVICE);
1780 if (pci_dma_mapping_error(hw->pdev, mapping))
1781 goto mapping_unwind;
1783 upper = upper_32_bits(mapping);
1784 if (upper != sky2->tx_last_upper) {
1785 le = get_tx_le(sky2, &slot);
1786 le->addr = cpu_to_le32(upper);
1787 sky2->tx_last_upper = upper;
1788 le->opcode = OP_ADDR64 | HW_OWNER;
1791 re = sky2->tx_ring + slot;
1792 re->flags = TX_MAP_PAGE;
1793 pci_unmap_addr_set(re, mapaddr, mapping);
1794 pci_unmap_len_set(re, maplen, frag->size);
1796 le = get_tx_le(sky2, &slot);
1797 le->addr = cpu_to_le32(lower_32_bits(mapping));
1798 le->length = cpu_to_le16(frag->size);
1800 le->opcode = OP_BUFFER | HW_OWNER;
1806 sky2->tx_prod = slot;
1808 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1809 netif_stop_queue(dev);
1811 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1813 return NETDEV_TX_OK;
1816 for (i = sky2->tx_prod; i != slot; i = RING_NEXT(i, sky2->tx_ring_size)) {
1817 re = sky2->tx_ring + i;
1819 sky2_tx_unmap(hw->pdev, re);
1823 if (net_ratelimit())
1824 dev_warn(&hw->pdev->dev, "%s: tx mapping error\n", dev->name);
1826 return NETDEV_TX_OK;
1830 * Free ring elements from starting at tx_cons until "done"
1833 * 1. The hardware will tell us about partial completion of multi-part
1834 * buffers so make sure not to free skb to early.
1835 * 2. This may run in parallel start_xmit because the it only
1836 * looks at the tail of the queue of FIFO (tx_cons), not
1837 * the head (tx_prod)
1839 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1841 struct net_device *dev = sky2->netdev;
1844 BUG_ON(done >= sky2->tx_ring_size);
1846 for (idx = sky2->tx_cons; idx != done;
1847 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
1848 struct tx_ring_info *re = sky2->tx_ring + idx;
1849 struct sk_buff *skb = re->skb;
1851 sky2_tx_unmap(sky2->hw->pdev, re);
1854 if (unlikely(netif_msg_tx_done(sky2)))
1855 printk(KERN_DEBUG "%s: tx done %u\n",
1858 dev->stats.tx_packets++;
1859 dev->stats.tx_bytes += skb->len;
1862 dev_kfree_skb_any(skb);
1864 sky2->tx_next = RING_NEXT(idx, sky2->tx_ring_size);
1868 sky2->tx_cons = idx;
1871 /* Wake unless it's detached, and called e.g. from sky2_down() */
1872 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4 && netif_device_present(dev))
1873 netif_wake_queue(dev);
1876 static void sky2_tx_reset(struct sky2_hw *hw, unsigned port)
1878 /* Disable Force Sync bit and Enable Alloc bit */
1879 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1880 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1882 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1883 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1884 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1886 /* Reset the PCI FIFO of the async Tx queue */
1887 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1888 BMU_RST_SET | BMU_FIFO_RST);
1890 /* Reset the Tx prefetch units */
1891 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1894 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1895 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1898 /* Network shutdown */
1899 static int sky2_down(struct net_device *dev)
1901 struct sky2_port *sky2 = netdev_priv(dev);
1902 struct sky2_hw *hw = sky2->hw;
1903 unsigned port = sky2->port;
1907 /* Never really got started! */
1911 if (netif_msg_ifdown(sky2))
1912 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1914 /* Force flow control off */
1915 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1917 /* Stop transmitter */
1918 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1919 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1921 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1922 RB_RST_SET | RB_DIS_OP_MD);
1924 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1925 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1926 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1928 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1930 /* Workaround shared GMAC reset */
1931 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 &&
1932 port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1933 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1935 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1937 /* Force any delayed status interrrupt and NAPI */
1938 sky2_write32(hw, STAT_LEV_TIMER_CNT, 0);
1939 sky2_write32(hw, STAT_TX_TIMER_CNT, 0);
1940 sky2_write32(hw, STAT_ISR_TIMER_CNT, 0);
1941 sky2_read8(hw, STAT_ISR_TIMER_CTRL);
1945 /* Disable port IRQ */
1946 imask = sky2_read32(hw, B0_IMSK);
1947 imask &= ~portirq_msk[port];
1948 sky2_write32(hw, B0_IMSK, imask);
1949 sky2_read32(hw, B0_IMSK);
1951 synchronize_irq(hw->pdev->irq);
1952 napi_synchronize(&hw->napi);
1954 spin_lock_bh(&sky2->phy_lock);
1955 sky2_phy_power_down(hw, port);
1956 spin_unlock_bh(&sky2->phy_lock);
1958 sky2_tx_reset(hw, port);
1960 /* Free any pending frames stuck in HW queue */
1961 sky2_tx_complete(sky2, sky2->tx_prod);
1963 sky2_rx_clean(sky2);
1965 sky2_free_buffers(sky2);
1970 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1972 if (hw->flags & SKY2_HW_FIBRE_PHY)
1975 if (!(hw->flags & SKY2_HW_GIGABIT)) {
1976 if (aux & PHY_M_PS_SPEED_100)
1982 switch (aux & PHY_M_PS_SPEED_MSK) {
1983 case PHY_M_PS_SPEED_1000:
1985 case PHY_M_PS_SPEED_100:
1992 static void sky2_link_up(struct sky2_port *sky2)
1994 struct sky2_hw *hw = sky2->hw;
1995 unsigned port = sky2->port;
1997 static const char *fc_name[] = {
2005 reg = gma_read16(hw, port, GM_GP_CTRL);
2006 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
2007 gma_write16(hw, port, GM_GP_CTRL, reg);
2009 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
2011 netif_carrier_on(sky2->netdev);
2013 mod_timer(&hw->watchdog_timer, jiffies + 1);
2015 /* Turn on link LED */
2016 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
2017 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
2019 if (netif_msg_link(sky2))
2020 printk(KERN_INFO PFX
2021 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
2022 sky2->netdev->name, sky2->speed,
2023 sky2->duplex == DUPLEX_FULL ? "full" : "half",
2024 fc_name[sky2->flow_status]);
2027 static void sky2_link_down(struct sky2_port *sky2)
2029 struct sky2_hw *hw = sky2->hw;
2030 unsigned port = sky2->port;
2033 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
2035 reg = gma_read16(hw, port, GM_GP_CTRL);
2036 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
2037 gma_write16(hw, port, GM_GP_CTRL, reg);
2039 netif_carrier_off(sky2->netdev);
2041 /* Turn off link LED */
2042 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
2044 if (netif_msg_link(sky2))
2045 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
2047 sky2_phy_init(hw, port);
2050 static enum flow_control sky2_flow(int rx, int tx)
2053 return tx ? FC_BOTH : FC_RX;
2055 return tx ? FC_TX : FC_NONE;
2058 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
2060 struct sky2_hw *hw = sky2->hw;
2061 unsigned port = sky2->port;
2064 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
2065 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
2066 if (lpa & PHY_M_AN_RF) {
2067 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
2071 if (!(aux & PHY_M_PS_SPDUP_RES)) {
2072 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
2073 sky2->netdev->name);
2077 sky2->speed = sky2_phy_speed(hw, aux);
2078 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2080 /* Since the pause result bits seem to in different positions on
2081 * different chips. look at registers.
2083 if (hw->flags & SKY2_HW_FIBRE_PHY) {
2084 /* Shift for bits in fiber PHY */
2085 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
2086 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
2088 if (advert & ADVERTISE_1000XPAUSE)
2089 advert |= ADVERTISE_PAUSE_CAP;
2090 if (advert & ADVERTISE_1000XPSE_ASYM)
2091 advert |= ADVERTISE_PAUSE_ASYM;
2092 if (lpa & LPA_1000XPAUSE)
2093 lpa |= LPA_PAUSE_CAP;
2094 if (lpa & LPA_1000XPAUSE_ASYM)
2095 lpa |= LPA_PAUSE_ASYM;
2098 sky2->flow_status = FC_NONE;
2099 if (advert & ADVERTISE_PAUSE_CAP) {
2100 if (lpa & LPA_PAUSE_CAP)
2101 sky2->flow_status = FC_BOTH;
2102 else if (advert & ADVERTISE_PAUSE_ASYM)
2103 sky2->flow_status = FC_RX;
2104 } else if (advert & ADVERTISE_PAUSE_ASYM) {
2105 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
2106 sky2->flow_status = FC_TX;
2109 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000 &&
2110 !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
2111 sky2->flow_status = FC_NONE;
2113 if (sky2->flow_status & FC_TX)
2114 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2116 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2121 /* Interrupt from PHY */
2122 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
2124 struct net_device *dev = hw->dev[port];
2125 struct sky2_port *sky2 = netdev_priv(dev);
2126 u16 istatus, phystat;
2128 if (!netif_running(dev))
2131 spin_lock(&sky2->phy_lock);
2132 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2133 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2135 if (netif_msg_intr(sky2))
2136 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
2137 sky2->netdev->name, istatus, phystat);
2139 if (istatus & PHY_M_IS_AN_COMPL) {
2140 if (sky2_autoneg_done(sky2, phystat) == 0)
2145 if (istatus & PHY_M_IS_LSP_CHANGE)
2146 sky2->speed = sky2_phy_speed(hw, phystat);
2148 if (istatus & PHY_M_IS_DUP_CHANGE)
2150 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2152 if (istatus & PHY_M_IS_LST_CHANGE) {
2153 if (phystat & PHY_M_PS_LINK_UP)
2156 sky2_link_down(sky2);
2159 spin_unlock(&sky2->phy_lock);
2162 /* Special quick link interrupt (Yukon-2 Optima only) */
2163 static void sky2_qlink_intr(struct sky2_hw *hw)
2165 struct sky2_port *sky2 = netdev_priv(hw->dev[0]);
2170 imask = sky2_read32(hw, B0_IMSK);
2171 imask &= ~Y2_IS_PHY_QLNK;
2172 sky2_write32(hw, B0_IMSK, imask);
2174 /* reset PHY Link Detect */
2175 phy = sky2_pci_read16(hw, PSM_CONFIG_REG4);
2176 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2177 sky2_pci_write16(hw, PSM_CONFIG_REG4, phy | 1);
2178 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2183 /* Transmit timeout is only called if we are running, carrier is up
2184 * and tx queue is full (stopped).
2186 static void sky2_tx_timeout(struct net_device *dev)
2188 struct sky2_port *sky2 = netdev_priv(dev);
2189 struct sky2_hw *hw = sky2->hw;
2191 if (netif_msg_timer(sky2))
2192 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
2194 printk(KERN_DEBUG PFX "%s: transmit ring %u .. %u report=%u done=%u\n",
2195 dev->name, sky2->tx_cons, sky2->tx_prod,
2196 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
2197 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
2199 /* can't restart safely under softirq */
2200 schedule_work(&hw->restart_work);
2203 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
2205 struct sky2_port *sky2 = netdev_priv(dev);
2206 struct sky2_hw *hw = sky2->hw;
2207 unsigned port = sky2->port;
2212 /* MTU size outside the spec */
2213 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2216 /* MTU > 1500 on yukon FE and FE+ not allowed */
2217 if (new_mtu > ETH_DATA_LEN &&
2218 (hw->chip_id == CHIP_ID_YUKON_FE ||
2219 hw->chip_id == CHIP_ID_YUKON_FE_P))
2222 /* TSO, etc on Yukon Ultra and MTU > 1500 not supported */
2223 if (new_mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U)
2224 dev->features &= ~(NETIF_F_TSO|NETIF_F_SG|NETIF_F_ALL_CSUM);
2226 if (!netif_running(dev)) {
2231 imask = sky2_read32(hw, B0_IMSK);
2232 sky2_write32(hw, B0_IMSK, 0);
2234 dev->trans_start = jiffies; /* prevent tx timeout */
2235 netif_stop_queue(dev);
2236 napi_disable(&hw->napi);
2238 synchronize_irq(hw->pdev->irq);
2240 if (!(hw->flags & SKY2_HW_RAM_BUFFER))
2241 sky2_set_tx_stfwd(hw, port);
2243 ctl = gma_read16(hw, port, GM_GP_CTRL);
2244 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2246 sky2_rx_clean(sky2);
2250 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
2251 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
2253 if (dev->mtu > ETH_DATA_LEN)
2254 mode |= GM_SMOD_JUMBO_ENA;
2256 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2258 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2260 err = sky2_rx_start(sky2);
2261 sky2_write32(hw, B0_IMSK, imask);
2263 sky2_read32(hw, B0_Y2_SP_LISR);
2264 napi_enable(&hw->napi);
2269 gma_write16(hw, port, GM_GP_CTRL, ctl);
2271 netif_wake_queue(dev);
2277 /* For small just reuse existing skb for next receive */
2278 static struct sk_buff *receive_copy(struct sky2_port *sky2,
2279 const struct rx_ring_info *re,
2282 struct sk_buff *skb;
2284 skb = netdev_alloc_skb_ip_align(sky2->netdev, length);
2286 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2287 length, PCI_DMA_FROMDEVICE);
2288 skb_copy_from_linear_data(re->skb, skb->data, length);
2289 skb->ip_summed = re->skb->ip_summed;
2290 skb->csum = re->skb->csum;
2291 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2292 length, PCI_DMA_FROMDEVICE);
2293 re->skb->ip_summed = CHECKSUM_NONE;
2294 skb_put(skb, length);
2299 /* Adjust length of skb with fragments to match received data */
2300 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2301 unsigned int length)
2306 /* put header into skb */
2307 size = min(length, hdr_space);
2312 num_frags = skb_shinfo(skb)->nr_frags;
2313 for (i = 0; i < num_frags; i++) {
2314 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2317 /* don't need this page */
2318 __free_page(frag->page);
2319 --skb_shinfo(skb)->nr_frags;
2321 size = min(length, (unsigned) PAGE_SIZE);
2324 skb->data_len += size;
2325 skb->truesize += size;
2332 /* Normal packet - take skb from ring element and put in a new one */
2333 static struct sk_buff *receive_new(struct sky2_port *sky2,
2334 struct rx_ring_info *re,
2335 unsigned int length)
2337 struct sk_buff *skb;
2338 struct rx_ring_info nre;
2339 unsigned hdr_space = sky2->rx_data_size;
2341 nre.skb = sky2_rx_alloc(sky2);
2342 if (unlikely(!nre.skb))
2345 if (sky2_rx_map_skb(sky2->hw->pdev, &nre, hdr_space))
2349 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2350 prefetch(skb->data);
2353 if (skb_shinfo(skb)->nr_frags)
2354 skb_put_frags(skb, hdr_space, length);
2356 skb_put(skb, length);
2360 dev_kfree_skb(nre.skb);
2366 * Receive one packet.
2367 * For larger packets, get new buffer.
2369 static struct sk_buff *sky2_receive(struct net_device *dev,
2370 u16 length, u32 status)
2372 struct sky2_port *sky2 = netdev_priv(dev);
2373 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2374 struct sk_buff *skb = NULL;
2375 u16 count = (status & GMR_FS_LEN) >> 16;
2377 #ifdef SKY2_VLAN_TAG_USED
2378 /* Account for vlan tag */
2379 if (sky2->vlgrp && (status & GMR_FS_VLAN))
2383 if (unlikely(netif_msg_rx_status(sky2)))
2384 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
2385 dev->name, sky2->rx_next, status, length);
2387 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2388 prefetch(sky2->rx_ring + sky2->rx_next);
2390 /* This chip has hardware problems that generates bogus status.
2391 * So do only marginal checking and expect higher level protocols
2392 * to handle crap frames.
2394 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2395 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2399 if (status & GMR_FS_ANY_ERR)
2402 if (!(status & GMR_FS_RX_OK))
2405 /* if length reported by DMA does not match PHY, packet was truncated */
2406 if (length != count)
2410 if (length < copybreak)
2411 skb = receive_copy(sky2, re, length);
2413 skb = receive_new(sky2, re, length);
2415 dev->stats.rx_dropped += (skb == NULL);
2418 sky2_rx_submit(sky2, re);
2423 /* Truncation of overlength packets
2424 causes PHY length to not match MAC length */
2425 ++dev->stats.rx_length_errors;
2426 if (netif_msg_rx_err(sky2) && net_ratelimit())
2427 pr_info(PFX "%s: rx length error: status %#x length %d\n",
2428 dev->name, status, length);
2432 ++dev->stats.rx_errors;
2433 if (status & GMR_FS_RX_FF_OV) {
2434 dev->stats.rx_over_errors++;
2438 if (netif_msg_rx_err(sky2) && net_ratelimit())
2439 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
2440 dev->name, status, length);
2442 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
2443 dev->stats.rx_length_errors++;
2444 if (status & GMR_FS_FRAGMENT)
2445 dev->stats.rx_frame_errors++;
2446 if (status & GMR_FS_CRC_ERR)
2447 dev->stats.rx_crc_errors++;
2452 /* Transmit complete */
2453 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2455 struct sky2_port *sky2 = netdev_priv(dev);
2457 if (netif_running(dev))
2458 sky2_tx_complete(sky2, last);
2461 static inline void sky2_skb_rx(const struct sky2_port *sky2,
2462 u32 status, struct sk_buff *skb)
2464 #ifdef SKY2_VLAN_TAG_USED
2465 u16 vlan_tag = be16_to_cpu(sky2->rx_tag);
2466 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
2467 if (skb->ip_summed == CHECKSUM_NONE)
2468 vlan_hwaccel_receive_skb(skb, sky2->vlgrp, vlan_tag);
2470 vlan_gro_receive(&sky2->hw->napi, sky2->vlgrp,
2475 if (skb->ip_summed == CHECKSUM_NONE)
2476 netif_receive_skb(skb);
2478 napi_gro_receive(&sky2->hw->napi, skb);
2481 static inline void sky2_rx_done(struct sky2_hw *hw, unsigned port,
2482 unsigned packets, unsigned bytes)
2485 struct net_device *dev = hw->dev[port];
2487 dev->stats.rx_packets += packets;
2488 dev->stats.rx_bytes += bytes;
2489 dev->last_rx = jiffies;
2490 sky2_rx_update(netdev_priv(dev), rxqaddr[port]);
2494 static void sky2_rx_checksum(struct sky2_port *sky2, u32 status)
2496 /* If this happens then driver assuming wrong format for chip type */
2497 BUG_ON(sky2->hw->flags & SKY2_HW_NEW_LE);
2499 /* Both checksum counters are programmed to start at
2500 * the same offset, so unless there is a problem they
2501 * should match. This failure is an early indication that
2502 * hardware receive checksumming won't work.
2504 if (likely((u16)(status >> 16) == (u16)status)) {
2505 struct sk_buff *skb = sky2->rx_ring[sky2->rx_next].skb;
2506 skb->ip_summed = CHECKSUM_COMPLETE;
2507 skb->csum = le16_to_cpu(status);
2509 dev_notice(&sky2->hw->pdev->dev,
2510 "%s: receive checksum problem (status = %#x)\n",
2511 sky2->netdev->name, status);
2513 /* Disable checksum offload */
2514 sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM;
2515 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2520 /* Process status response ring */
2521 static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
2524 unsigned int total_bytes[2] = { 0 };
2525 unsigned int total_packets[2] = { 0 };
2529 struct sky2_port *sky2;
2530 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2532 struct net_device *dev;
2533 struct sk_buff *skb;
2536 u8 opcode = le->opcode;
2538 if (!(opcode & HW_OWNER))
2541 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
2543 port = le->css & CSS_LINK_BIT;
2544 dev = hw->dev[port];
2545 sky2 = netdev_priv(dev);
2546 length = le16_to_cpu(le->length);
2547 status = le32_to_cpu(le->status);
2550 switch (opcode & ~HW_OWNER) {
2552 total_packets[port]++;
2553 total_bytes[port] += length;
2555 skb = sky2_receive(dev, length, status);
2559 /* This chip reports checksum status differently */
2560 if (hw->flags & SKY2_HW_NEW_LE) {
2561 if ((sky2->flags & SKY2_FLAG_RX_CHECKSUM) &&
2562 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2563 (le->css & CSS_TCPUDPCSOK))
2564 skb->ip_summed = CHECKSUM_UNNECESSARY;
2566 skb->ip_summed = CHECKSUM_NONE;
2569 skb->protocol = eth_type_trans(skb, dev);
2571 sky2_skb_rx(sky2, status, skb);
2573 /* Stop after net poll weight */
2574 if (++work_done >= to_do)
2578 #ifdef SKY2_VLAN_TAG_USED
2580 sky2->rx_tag = length;
2584 sky2->rx_tag = length;
2588 if (likely(sky2->flags & SKY2_FLAG_RX_CHECKSUM))
2589 sky2_rx_checksum(sky2, status);
2593 /* TX index reports status for both ports */
2594 sky2_tx_done(hw->dev[0], status & 0xfff);
2596 sky2_tx_done(hw->dev[1],
2597 ((status >> 24) & 0xff)
2598 | (u16)(length & 0xf) << 8);
2602 if (net_ratelimit())
2603 printk(KERN_WARNING PFX
2604 "unknown status opcode 0x%x\n", opcode);
2606 } while (hw->st_idx != idx);
2608 /* Fully processed status ring so clear irq */
2609 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2612 sky2_rx_done(hw, 0, total_packets[0], total_bytes[0]);
2613 sky2_rx_done(hw, 1, total_packets[1], total_bytes[1]);
2618 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2620 struct net_device *dev = hw->dev[port];
2622 if (net_ratelimit())
2623 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
2626 if (status & Y2_IS_PAR_RD1) {
2627 if (net_ratelimit())
2628 printk(KERN_ERR PFX "%s: ram data read parity error\n",
2631 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2634 if (status & Y2_IS_PAR_WR1) {
2635 if (net_ratelimit())
2636 printk(KERN_ERR PFX "%s: ram data write parity error\n",
2639 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2642 if (status & Y2_IS_PAR_MAC1) {
2643 if (net_ratelimit())
2644 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
2645 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2648 if (status & Y2_IS_PAR_RX1) {
2649 if (net_ratelimit())
2650 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
2651 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2654 if (status & Y2_IS_TCP_TXA1) {
2655 if (net_ratelimit())
2656 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
2658 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2662 static void sky2_hw_intr(struct sky2_hw *hw)
2664 struct pci_dev *pdev = hw->pdev;
2665 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2666 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2670 if (status & Y2_IS_TIST_OV)
2671 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2673 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2676 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2677 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2678 if (net_ratelimit())
2679 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
2682 sky2_pci_write16(hw, PCI_STATUS,
2683 pci_err | PCI_STATUS_ERROR_BITS);
2684 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2687 if (status & Y2_IS_PCI_EXP) {
2688 /* PCI-Express uncorrectable Error occurred */
2691 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2692 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2693 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2695 if (net_ratelimit())
2696 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
2698 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2699 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2702 if (status & Y2_HWE_L1_MASK)
2703 sky2_hw_error(hw, 0, status);
2705 if (status & Y2_HWE_L1_MASK)
2706 sky2_hw_error(hw, 1, status);
2709 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2711 struct net_device *dev = hw->dev[port];
2712 struct sky2_port *sky2 = netdev_priv(dev);
2713 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2715 if (netif_msg_intr(sky2))
2716 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2719 if (status & GM_IS_RX_CO_OV)
2720 gma_read16(hw, port, GM_RX_IRQ_SRC);
2722 if (status & GM_IS_TX_CO_OV)
2723 gma_read16(hw, port, GM_TX_IRQ_SRC);
2725 if (status & GM_IS_RX_FF_OR) {
2726 ++dev->stats.rx_fifo_errors;
2727 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2730 if (status & GM_IS_TX_FF_UR) {
2731 ++dev->stats.tx_fifo_errors;
2732 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2736 /* This should never happen it is a bug. */
2737 static void sky2_le_error(struct sky2_hw *hw, unsigned port, u16 q)
2739 struct net_device *dev = hw->dev[port];
2740 u16 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2742 dev_err(&hw->pdev->dev, PFX
2743 "%s: descriptor error q=%#x get=%u put=%u\n",
2744 dev->name, (unsigned) q, (unsigned) idx,
2745 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2747 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2750 static int sky2_rx_hung(struct net_device *dev)
2752 struct sky2_port *sky2 = netdev_priv(dev);
2753 struct sky2_hw *hw = sky2->hw;
2754 unsigned port = sky2->port;
2755 unsigned rxq = rxqaddr[port];
2756 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2757 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2758 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2759 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2761 /* If idle and MAC or PCI is stuck */
2762 if (sky2->check.last == dev->last_rx &&
2763 ((mac_rp == sky2->check.mac_rp &&
2764 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2765 /* Check if the PCI RX hang */
2766 (fifo_rp == sky2->check.fifo_rp &&
2767 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2768 printk(KERN_DEBUG PFX "%s: hung mac %d:%d fifo %d (%d:%d)\n",
2769 dev->name, mac_lev, mac_rp, fifo_lev, fifo_rp,
2770 sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2773 sky2->check.last = dev->last_rx;
2774 sky2->check.mac_rp = mac_rp;
2775 sky2->check.mac_lev = mac_lev;
2776 sky2->check.fifo_rp = fifo_rp;
2777 sky2->check.fifo_lev = fifo_lev;
2782 static void sky2_watchdog(unsigned long arg)
2784 struct sky2_hw *hw = (struct sky2_hw *) arg;
2786 /* Check for lost IRQ once a second */
2787 if (sky2_read32(hw, B0_ISRC)) {
2788 napi_schedule(&hw->napi);
2792 for (i = 0; i < hw->ports; i++) {
2793 struct net_device *dev = hw->dev[i];
2794 if (!netif_running(dev))
2798 /* For chips with Rx FIFO, check if stuck */
2799 if ((hw->flags & SKY2_HW_RAM_BUFFER) &&
2800 sky2_rx_hung(dev)) {
2801 pr_info(PFX "%s: receiver hang detected\n",
2803 schedule_work(&hw->restart_work);
2812 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
2815 /* Hardware/software error handling */
2816 static void sky2_err_intr(struct sky2_hw *hw, u32 status)
2818 if (net_ratelimit())
2819 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
2821 if (status & Y2_IS_HW_ERR)
2824 if (status & Y2_IS_IRQ_MAC1)
2825 sky2_mac_intr(hw, 0);
2827 if (status & Y2_IS_IRQ_MAC2)
2828 sky2_mac_intr(hw, 1);
2830 if (status & Y2_IS_CHK_RX1)
2831 sky2_le_error(hw, 0, Q_R1);
2833 if (status & Y2_IS_CHK_RX2)
2834 sky2_le_error(hw, 1, Q_R2);
2836 if (status & Y2_IS_CHK_TXA1)
2837 sky2_le_error(hw, 0, Q_XA1);
2839 if (status & Y2_IS_CHK_TXA2)
2840 sky2_le_error(hw, 1, Q_XA2);
2843 static int sky2_poll(struct napi_struct *napi, int work_limit)
2845 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
2846 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2850 if (unlikely(status & Y2_IS_ERROR))
2851 sky2_err_intr(hw, status);
2853 if (status & Y2_IS_IRQ_PHY1)
2854 sky2_phy_intr(hw, 0);
2856 if (status & Y2_IS_IRQ_PHY2)
2857 sky2_phy_intr(hw, 1);
2859 if (status & Y2_IS_PHY_QLNK)
2860 sky2_qlink_intr(hw);
2862 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
2863 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
2865 if (work_done >= work_limit)
2869 napi_complete(napi);
2870 sky2_read32(hw, B0_Y2_SP_LISR);
2876 static irqreturn_t sky2_intr(int irq, void *dev_id)
2878 struct sky2_hw *hw = dev_id;
2881 /* Reading this mask interrupts as side effect */
2882 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2883 if (status == 0 || status == ~0)
2886 prefetch(&hw->st_le[hw->st_idx]);
2888 napi_schedule(&hw->napi);
2893 #ifdef CONFIG_NET_POLL_CONTROLLER
2894 static void sky2_netpoll(struct net_device *dev)
2896 struct sky2_port *sky2 = netdev_priv(dev);
2898 napi_schedule(&sky2->hw->napi);
2902 /* Chip internal frequency for clock calculations */
2903 static u32 sky2_mhz(const struct sky2_hw *hw)
2905 switch (hw->chip_id) {
2906 case CHIP_ID_YUKON_EC:
2907 case CHIP_ID_YUKON_EC_U:
2908 case CHIP_ID_YUKON_EX:
2909 case CHIP_ID_YUKON_SUPR:
2910 case CHIP_ID_YUKON_UL_2:
2911 case CHIP_ID_YUKON_OPT:
2914 case CHIP_ID_YUKON_FE:
2917 case CHIP_ID_YUKON_FE_P:
2920 case CHIP_ID_YUKON_XL:
2928 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2930 return sky2_mhz(hw) * us;
2933 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2935 return clk / sky2_mhz(hw);
2939 static int __devinit sky2_init(struct sky2_hw *hw)
2943 /* Enable all clocks and check for bad PCI access */
2944 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
2946 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2948 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2949 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2951 switch(hw->chip_id) {
2952 case CHIP_ID_YUKON_XL:
2953 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
2956 case CHIP_ID_YUKON_EC_U:
2957 hw->flags = SKY2_HW_GIGABIT
2959 | SKY2_HW_ADV_POWER_CTL;
2962 case CHIP_ID_YUKON_EX:
2963 hw->flags = SKY2_HW_GIGABIT
2966 | SKY2_HW_ADV_POWER_CTL;
2968 /* New transmit checksum */
2969 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
2970 hw->flags |= SKY2_HW_AUTO_TX_SUM;
2973 case CHIP_ID_YUKON_EC:
2974 /* This rev is really old, and requires untested workarounds */
2975 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
2976 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
2979 hw->flags = SKY2_HW_GIGABIT;
2982 case CHIP_ID_YUKON_FE:
2985 case CHIP_ID_YUKON_FE_P:
2986 hw->flags = SKY2_HW_NEWER_PHY
2988 | SKY2_HW_AUTO_TX_SUM
2989 | SKY2_HW_ADV_POWER_CTL;
2992 case CHIP_ID_YUKON_SUPR:
2993 hw->flags = SKY2_HW_GIGABIT
2996 | SKY2_HW_AUTO_TX_SUM
2997 | SKY2_HW_ADV_POWER_CTL;
3000 case CHIP_ID_YUKON_UL_2:
3001 hw->flags = SKY2_HW_GIGABIT
3002 | SKY2_HW_ADV_POWER_CTL;
3005 case CHIP_ID_YUKON_OPT:
3006 hw->flags = SKY2_HW_GIGABIT
3008 | SKY2_HW_ADV_POWER_CTL;
3012 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
3017 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
3018 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
3019 hw->flags |= SKY2_HW_FIBRE_PHY;
3022 t8 = sky2_read8(hw, B2_Y2_HW_RES);
3023 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
3024 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
3028 if (sky2_read8(hw, B2_E_0))
3029 hw->flags |= SKY2_HW_RAM_BUFFER;
3034 static void sky2_reset(struct sky2_hw *hw)
3036 struct pci_dev *pdev = hw->pdev;
3039 u32 hwe_mask = Y2_HWE_ALL_MASK;
3042 if (hw->chip_id == CHIP_ID_YUKON_EX
3043 || hw->chip_id == CHIP_ID_YUKON_SUPR) {
3044 sky2_write32(hw, CPU_WDOG, 0);
3045 status = sky2_read16(hw, HCU_CCSR);
3046 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
3047 HCU_CCSR_UC_STATE_MSK);
3049 * CPU clock divider shouldn't be used because
3050 * - ASF firmware may malfunction
3051 * - Yukon-Supreme: Parallel FLASH doesn't support divided clocks
3053 status &= ~HCU_CCSR_CPU_CLK_DIVIDE_MSK;
3054 sky2_write16(hw, HCU_CCSR, status);
3055 sky2_write32(hw, CPU_WDOG, 0);
3057 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
3058 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
3061 sky2_write8(hw, B0_CTST, CS_RST_SET);
3062 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3064 /* allow writes to PCI config */
3065 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3067 /* clear PCI errors, if any */
3068 status = sky2_pci_read16(hw, PCI_STATUS);
3069 status |= PCI_STATUS_ERROR_BITS;
3070 sky2_pci_write16(hw, PCI_STATUS, status);
3072 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
3074 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3076 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
3079 /* If error bit is stuck on ignore it */
3080 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
3081 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
3083 hwe_mask |= Y2_IS_PCI_EXP;
3087 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3089 for (i = 0; i < hw->ports; i++) {
3090 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
3091 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
3093 if (hw->chip_id == CHIP_ID_YUKON_EX ||
3094 hw->chip_id == CHIP_ID_YUKON_SUPR)
3095 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
3096 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
3101 if (hw->chip_id == CHIP_ID_YUKON_SUPR && hw->chip_rev > CHIP_REV_YU_SU_B0) {
3102 /* enable MACSec clock gating */
3103 sky2_pci_write32(hw, PCI_DEV_REG3, P_CLK_MACSEC_DIS);
3106 if (hw->chip_id == CHIP_ID_YUKON_OPT) {
3110 if (hw->chip_rev == 0) {
3111 /* disable PCI-E PHY power down (set PHY reg 0x80, bit 7 */
3112 sky2_write32(hw, Y2_PEX_PHY_DATA, (0x80UL << 16) | (1 << 7));
3114 /* set PHY Link Detect Timer to 1.1 second (11x 100ms) */
3117 /* set PHY Link Detect Timer to 0.4 second (4x 100ms) */
3121 reg <<= PSM_CONFIG_REG4_TIMER_PHY_LINK_DETECT_BASE;
3123 /* reset PHY Link Detect */
3124 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3125 sky2_pci_write16(hw, PSM_CONFIG_REG4,
3126 reg | PSM_CONFIG_REG4_RST_PHY_LINK_DETECT);
3127 sky2_pci_write16(hw, PSM_CONFIG_REG4, reg);
3130 /* enable PHY Quick Link */
3131 msk = sky2_read32(hw, B0_IMSK);
3132 msk |= Y2_IS_PHY_QLNK;
3133 sky2_write32(hw, B0_IMSK, msk);
3135 /* check if PSMv2 was running before */
3136 reg = sky2_pci_read16(hw, PSM_CONFIG_REG3);
3137 if (reg & PCI_EXP_LNKCTL_ASPMC) {
3138 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3139 /* restore the PCIe Link Control register */
3140 sky2_pci_write16(hw, cap + PCI_EXP_LNKCTL, reg);
3142 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3144 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3145 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3148 /* Clear I2C IRQ noise */
3149 sky2_write32(hw, B2_I2C_IRQ, 1);
3151 /* turn off hardware timer (unused) */
3152 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
3153 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
3155 /* Turn off descriptor polling */
3156 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
3158 /* Turn off receive timestamp */
3159 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
3160 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
3162 /* enable the Tx Arbiters */
3163 for (i = 0; i < hw->ports; i++)
3164 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3166 /* Initialize ram interface */
3167 for (i = 0; i < hw->ports; i++) {
3168 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
3170 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
3171 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
3172 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
3173 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
3174 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
3175 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
3176 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
3177 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
3178 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
3179 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
3180 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
3181 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
3184 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
3186 for (i = 0; i < hw->ports; i++)
3187 sky2_gmac_reset(hw, i);
3189 memset(hw->st_le, 0, STATUS_LE_BYTES);
3192 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
3193 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
3195 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
3196 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
3198 /* Set the list last index */
3199 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
3201 sky2_write16(hw, STAT_TX_IDX_TH, 10);
3202 sky2_write8(hw, STAT_FIFO_WM, 16);
3204 /* set Status-FIFO ISR watermark */
3205 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
3206 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
3208 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
3210 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
3211 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
3212 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
3214 /* enable status unit */
3215 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
3217 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3218 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3219 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3222 /* Take device down (offline).
3223 * Equivalent to doing dev_stop() but this does not
3224 * inform upper layers of the transistion.
3226 static void sky2_detach(struct net_device *dev)
3228 if (netif_running(dev)) {
3230 netif_device_detach(dev); /* stop txq */
3231 netif_tx_unlock(dev);
3236 /* Bring device back after doing sky2_detach */
3237 static int sky2_reattach(struct net_device *dev)
3241 if (netif_running(dev)) {
3244 printk(KERN_INFO PFX "%s: could not restart %d\n",
3248 netif_device_attach(dev);
3249 sky2_set_multicast(dev);
3256 static void sky2_restart(struct work_struct *work)
3258 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
3262 for (i = 0; i < hw->ports; i++)
3263 sky2_detach(hw->dev[i]);
3265 napi_disable(&hw->napi);
3266 sky2_write32(hw, B0_IMSK, 0);
3268 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3269 napi_enable(&hw->napi);
3271 for (i = 0; i < hw->ports; i++)
3272 sky2_reattach(hw->dev[i]);
3277 static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
3279 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
3282 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3284 const struct sky2_port *sky2 = netdev_priv(dev);
3286 wol->supported = sky2_wol_supported(sky2->hw);
3287 wol->wolopts = sky2->wol;
3290 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3292 struct sky2_port *sky2 = netdev_priv(dev);
3293 struct sky2_hw *hw = sky2->hw;
3295 if ((wol->wolopts & ~sky2_wol_supported(sky2->hw)) ||
3296 !device_can_wakeup(&hw->pdev->dev))
3299 sky2->wol = wol->wolopts;
3303 static u32 sky2_supported_modes(const struct sky2_hw *hw)
3305 if (sky2_is_copper(hw)) {
3306 u32 modes = SUPPORTED_10baseT_Half
3307 | SUPPORTED_10baseT_Full
3308 | SUPPORTED_100baseT_Half
3309 | SUPPORTED_100baseT_Full
3310 | SUPPORTED_Autoneg | SUPPORTED_TP;
3312 if (hw->flags & SKY2_HW_GIGABIT)
3313 modes |= SUPPORTED_1000baseT_Half
3314 | SUPPORTED_1000baseT_Full;
3317 return SUPPORTED_1000baseT_Half
3318 | SUPPORTED_1000baseT_Full
3323 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3325 struct sky2_port *sky2 = netdev_priv(dev);
3326 struct sky2_hw *hw = sky2->hw;
3328 ecmd->transceiver = XCVR_INTERNAL;
3329 ecmd->supported = sky2_supported_modes(hw);
3330 ecmd->phy_address = PHY_ADDR_MARV;
3331 if (sky2_is_copper(hw)) {
3332 ecmd->port = PORT_TP;
3333 ecmd->speed = sky2->speed;
3335 ecmd->speed = SPEED_1000;
3336 ecmd->port = PORT_FIBRE;
3339 ecmd->advertising = sky2->advertising;
3340 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_SPEED)
3341 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3342 ecmd->duplex = sky2->duplex;
3346 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3348 struct sky2_port *sky2 = netdev_priv(dev);
3349 const struct sky2_hw *hw = sky2->hw;
3350 u32 supported = sky2_supported_modes(hw);
3352 if (ecmd->autoneg == AUTONEG_ENABLE) {
3353 sky2->flags |= SKY2_FLAG_AUTO_SPEED;
3354 ecmd->advertising = supported;
3360 switch (ecmd->speed) {
3362 if (ecmd->duplex == DUPLEX_FULL)
3363 setting = SUPPORTED_1000baseT_Full;
3364 else if (ecmd->duplex == DUPLEX_HALF)
3365 setting = SUPPORTED_1000baseT_Half;
3370 if (ecmd->duplex == DUPLEX_FULL)
3371 setting = SUPPORTED_100baseT_Full;
3372 else if (ecmd->duplex == DUPLEX_HALF)
3373 setting = SUPPORTED_100baseT_Half;
3379 if (ecmd->duplex == DUPLEX_FULL)
3380 setting = SUPPORTED_10baseT_Full;
3381 else if (ecmd->duplex == DUPLEX_HALF)
3382 setting = SUPPORTED_10baseT_Half;
3390 if ((setting & supported) == 0)
3393 sky2->speed = ecmd->speed;
3394 sky2->duplex = ecmd->duplex;
3395 sky2->flags &= ~SKY2_FLAG_AUTO_SPEED;
3398 sky2->advertising = ecmd->advertising;
3400 if (netif_running(dev)) {
3401 sky2_phy_reinit(sky2);
3402 sky2_set_multicast(dev);
3408 static void sky2_get_drvinfo(struct net_device *dev,
3409 struct ethtool_drvinfo *info)
3411 struct sky2_port *sky2 = netdev_priv(dev);
3413 strcpy(info->driver, DRV_NAME);
3414 strcpy(info->version, DRV_VERSION);
3415 strcpy(info->fw_version, "N/A");
3416 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
3419 static const struct sky2_stat {
3420 char name[ETH_GSTRING_LEN];
3423 { "tx_bytes", GM_TXO_OK_HI },
3424 { "rx_bytes", GM_RXO_OK_HI },
3425 { "tx_broadcast", GM_TXF_BC_OK },
3426 { "rx_broadcast", GM_RXF_BC_OK },
3427 { "tx_multicast", GM_TXF_MC_OK },
3428 { "rx_multicast", GM_RXF_MC_OK },
3429 { "tx_unicast", GM_TXF_UC_OK },
3430 { "rx_unicast", GM_RXF_UC_OK },
3431 { "tx_mac_pause", GM_TXF_MPAUSE },
3432 { "rx_mac_pause", GM_RXF_MPAUSE },
3433 { "collisions", GM_TXF_COL },
3434 { "late_collision",GM_TXF_LAT_COL },
3435 { "aborted", GM_TXF_ABO_COL },
3436 { "single_collisions", GM_TXF_SNG_COL },
3437 { "multi_collisions", GM_TXF_MUL_COL },
3439 { "rx_short", GM_RXF_SHT },
3440 { "rx_runt", GM_RXE_FRAG },
3441 { "rx_64_byte_packets", GM_RXF_64B },
3442 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3443 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3444 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3445 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3446 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3447 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3448 { "rx_too_long", GM_RXF_LNG_ERR },
3449 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3450 { "rx_jabber", GM_RXF_JAB_PKT },
3451 { "rx_fcs_error", GM_RXF_FCS_ERR },
3453 { "tx_64_byte_packets", GM_TXF_64B },
3454 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3455 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3456 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3457 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3458 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3459 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3460 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3463 static u32 sky2_get_rx_csum(struct net_device *dev)
3465 struct sky2_port *sky2 = netdev_priv(dev);
3467 return !!(sky2->flags & SKY2_FLAG_RX_CHECKSUM);
3470 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
3472 struct sky2_port *sky2 = netdev_priv(dev);
3475 sky2->flags |= SKY2_FLAG_RX_CHECKSUM;
3477 sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM;
3479 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
3480 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
3485 static u32 sky2_get_msglevel(struct net_device *netdev)
3487 struct sky2_port *sky2 = netdev_priv(netdev);
3488 return sky2->msg_enable;
3491 static int sky2_nway_reset(struct net_device *dev)
3493 struct sky2_port *sky2 = netdev_priv(dev);
3495 if (!netif_running(dev) || !(sky2->flags & SKY2_FLAG_AUTO_SPEED))
3498 sky2_phy_reinit(sky2);
3499 sky2_set_multicast(dev);
3504 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3506 struct sky2_hw *hw = sky2->hw;
3507 unsigned port = sky2->port;
3510 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
3511 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
3512 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
3513 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
3515 for (i = 2; i < count; i++)
3516 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
3519 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3521 struct sky2_port *sky2 = netdev_priv(netdev);
3522 sky2->msg_enable = value;
3525 static int sky2_get_sset_count(struct net_device *dev, int sset)
3529 return ARRAY_SIZE(sky2_stats);
3535 static void sky2_get_ethtool_stats(struct net_device *dev,
3536 struct ethtool_stats *stats, u64 * data)
3538 struct sky2_port *sky2 = netdev_priv(dev);
3540 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3543 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3547 switch (stringset) {
3549 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3550 memcpy(data + i * ETH_GSTRING_LEN,
3551 sky2_stats[i].name, ETH_GSTRING_LEN);
3556 static int sky2_set_mac_address(struct net_device *dev, void *p)
3558 struct sky2_port *sky2 = netdev_priv(dev);
3559 struct sky2_hw *hw = sky2->hw;
3560 unsigned port = sky2->port;
3561 const struct sockaddr *addr = p;
3563 if (!is_valid_ether_addr(addr->sa_data))
3564 return -EADDRNOTAVAIL;
3566 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3567 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3568 dev->dev_addr, ETH_ALEN);
3569 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3570 dev->dev_addr, ETH_ALEN);
3572 /* virtual address for data */
3573 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3575 /* physical address: used for pause frames */
3576 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3581 static void inline sky2_add_filter(u8 filter[8], const u8 *addr)
3585 bit = ether_crc(ETH_ALEN, addr) & 63;
3586 filter[bit >> 3] |= 1 << (bit & 7);
3589 static void sky2_set_multicast(struct net_device *dev)
3591 struct sky2_port *sky2 = netdev_priv(dev);
3592 struct sky2_hw *hw = sky2->hw;
3593 unsigned port = sky2->port;
3594 struct dev_mc_list *list = dev->mc_list;
3598 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3600 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3601 memset(filter, 0, sizeof(filter));
3603 reg = gma_read16(hw, port, GM_RX_CTRL);
3604 reg |= GM_RXCR_UCF_ENA;
3606 if (dev->flags & IFF_PROMISC) /* promiscuous */
3607 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3608 else if (dev->flags & IFF_ALLMULTI)
3609 memset(filter, 0xff, sizeof(filter));
3610 else if (netdev_mc_empty(dev) && !rx_pause)
3611 reg &= ~GM_RXCR_MCF_ENA;
3614 reg |= GM_RXCR_MCF_ENA;
3617 sky2_add_filter(filter, pause_mc_addr);
3619 for (i = 0; list && i < netdev_mc_count(dev); i++, list = list->next)
3620 sky2_add_filter(filter, list->dmi_addr);
3623 gma_write16(hw, port, GM_MC_ADDR_H1,
3624 (u16) filter[0] | ((u16) filter[1] << 8));
3625 gma_write16(hw, port, GM_MC_ADDR_H2,
3626 (u16) filter[2] | ((u16) filter[3] << 8));
3627 gma_write16(hw, port, GM_MC_ADDR_H3,
3628 (u16) filter[4] | ((u16) filter[5] << 8));
3629 gma_write16(hw, port, GM_MC_ADDR_H4,
3630 (u16) filter[6] | ((u16) filter[7] << 8));
3632 gma_write16(hw, port, GM_RX_CTRL, reg);
3635 /* Can have one global because blinking is controlled by
3636 * ethtool and that is always under RTNL mutex
3638 static void sky2_led(struct sky2_port *sky2, enum led_mode mode)
3640 struct sky2_hw *hw = sky2->hw;
3641 unsigned port = sky2->port;
3643 spin_lock_bh(&sky2->phy_lock);
3644 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3645 hw->chip_id == CHIP_ID_YUKON_EX ||
3646 hw->chip_id == CHIP_ID_YUKON_SUPR) {
3648 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3649 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3653 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3654 PHY_M_LEDC_LOS_CTRL(8) |
3655 PHY_M_LEDC_INIT_CTRL(8) |
3656 PHY_M_LEDC_STA1_CTRL(8) |
3657 PHY_M_LEDC_STA0_CTRL(8));
3660 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3661 PHY_M_LEDC_LOS_CTRL(9) |
3662 PHY_M_LEDC_INIT_CTRL(9) |
3663 PHY_M_LEDC_STA1_CTRL(9) |
3664 PHY_M_LEDC_STA0_CTRL(9));
3667 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3668 PHY_M_LEDC_LOS_CTRL(0xa) |
3669 PHY_M_LEDC_INIT_CTRL(0xa) |
3670 PHY_M_LEDC_STA1_CTRL(0xa) |
3671 PHY_M_LEDC_STA0_CTRL(0xa));
3674 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3675 PHY_M_LEDC_LOS_CTRL(1) |
3676 PHY_M_LEDC_INIT_CTRL(8) |
3677 PHY_M_LEDC_STA1_CTRL(7) |
3678 PHY_M_LEDC_STA0_CTRL(7));
3681 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3683 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3684 PHY_M_LED_MO_DUP(mode) |
3685 PHY_M_LED_MO_10(mode) |
3686 PHY_M_LED_MO_100(mode) |
3687 PHY_M_LED_MO_1000(mode) |
3688 PHY_M_LED_MO_RX(mode) |
3689 PHY_M_LED_MO_TX(mode));
3691 spin_unlock_bh(&sky2->phy_lock);
3694 /* blink LED's for finding board */
3695 static int sky2_phys_id(struct net_device *dev, u32 data)
3697 struct sky2_port *sky2 = netdev_priv(dev);
3703 for (i = 0; i < data; i++) {
3704 sky2_led(sky2, MO_LED_ON);
3705 if (msleep_interruptible(500))
3707 sky2_led(sky2, MO_LED_OFF);
3708 if (msleep_interruptible(500))
3711 sky2_led(sky2, MO_LED_NORM);
3716 static void sky2_get_pauseparam(struct net_device *dev,
3717 struct ethtool_pauseparam *ecmd)
3719 struct sky2_port *sky2 = netdev_priv(dev);
3721 switch (sky2->flow_mode) {
3723 ecmd->tx_pause = ecmd->rx_pause = 0;
3726 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
3729 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
3732 ecmd->tx_pause = ecmd->rx_pause = 1;
3735 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_PAUSE)
3736 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3739 static int sky2_set_pauseparam(struct net_device *dev,
3740 struct ethtool_pauseparam *ecmd)
3742 struct sky2_port *sky2 = netdev_priv(dev);
3744 if (ecmd->autoneg == AUTONEG_ENABLE)
3745 sky2->flags |= SKY2_FLAG_AUTO_PAUSE;
3747 sky2->flags &= ~SKY2_FLAG_AUTO_PAUSE;
3749 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
3751 if (netif_running(dev))
3752 sky2_phy_reinit(sky2);
3757 static int sky2_get_coalesce(struct net_device *dev,
3758 struct ethtool_coalesce *ecmd)
3760 struct sky2_port *sky2 = netdev_priv(dev);
3761 struct sky2_hw *hw = sky2->hw;
3763 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
3764 ecmd->tx_coalesce_usecs = 0;
3766 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
3767 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
3769 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
3771 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
3772 ecmd->rx_coalesce_usecs = 0;
3774 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
3775 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
3777 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
3779 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
3780 ecmd->rx_coalesce_usecs_irq = 0;
3782 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
3783 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
3786 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
3791 /* Note: this affect both ports */
3792 static int sky2_set_coalesce(struct net_device *dev,
3793 struct ethtool_coalesce *ecmd)
3795 struct sky2_port *sky2 = netdev_priv(dev);
3796 struct sky2_hw *hw = sky2->hw;
3797 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
3799 if (ecmd->tx_coalesce_usecs > tmax ||
3800 ecmd->rx_coalesce_usecs > tmax ||
3801 ecmd->rx_coalesce_usecs_irq > tmax)
3804 if (ecmd->tx_max_coalesced_frames >= sky2->tx_ring_size-1)
3806 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
3808 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
3811 if (ecmd->tx_coalesce_usecs == 0)
3812 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
3814 sky2_write32(hw, STAT_TX_TIMER_INI,
3815 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
3816 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3818 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
3820 if (ecmd->rx_coalesce_usecs == 0)
3821 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
3823 sky2_write32(hw, STAT_LEV_TIMER_INI,
3824 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
3825 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3827 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
3829 if (ecmd->rx_coalesce_usecs_irq == 0)
3830 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
3832 sky2_write32(hw, STAT_ISR_TIMER_INI,
3833 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
3834 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3836 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
3840 static void sky2_get_ringparam(struct net_device *dev,
3841 struct ethtool_ringparam *ering)
3843 struct sky2_port *sky2 = netdev_priv(dev);
3845 ering->rx_max_pending = RX_MAX_PENDING;
3846 ering->rx_mini_max_pending = 0;
3847 ering->rx_jumbo_max_pending = 0;
3848 ering->tx_max_pending = TX_MAX_PENDING;
3850 ering->rx_pending = sky2->rx_pending;
3851 ering->rx_mini_pending = 0;
3852 ering->rx_jumbo_pending = 0;
3853 ering->tx_pending = sky2->tx_pending;
3856 static int sky2_set_ringparam(struct net_device *dev,
3857 struct ethtool_ringparam *ering)
3859 struct sky2_port *sky2 = netdev_priv(dev);
3861 if (ering->rx_pending > RX_MAX_PENDING ||
3862 ering->rx_pending < 8 ||
3863 ering->tx_pending < TX_MIN_PENDING ||
3864 ering->tx_pending > TX_MAX_PENDING)
3869 sky2->rx_pending = ering->rx_pending;
3870 sky2->tx_pending = ering->tx_pending;
3871 sky2->tx_ring_size = roundup_pow_of_two(sky2->tx_pending+1);
3873 return sky2_reattach(dev);
3876 static int sky2_get_regs_len(struct net_device *dev)
3881 static int sky2_reg_access_ok(struct sky2_hw *hw, unsigned int b)
3883 /* This complicated switch statement is to make sure and
3884 * only access regions that are unreserved.
3885 * Some blocks are only valid on dual port cards.
3889 case 5: /* Tx Arbiter 2 */
3891 case 14 ... 15: /* TX2 */
3892 case 17: case 19: /* Ram Buffer 2 */
3893 case 22 ... 23: /* Tx Ram Buffer 2 */
3894 case 25: /* Rx MAC Fifo 1 */
3895 case 27: /* Tx MAC Fifo 2 */
3896 case 31: /* GPHY 2 */
3897 case 40 ... 47: /* Pattern Ram 2 */
3898 case 52: case 54: /* TCP Segmentation 2 */
3899 case 112 ... 116: /* GMAC 2 */
3900 return hw->ports > 1;
3902 case 0: /* Control */
3903 case 2: /* Mac address */
3904 case 4: /* Tx Arbiter 1 */
3905 case 7: /* PCI express reg */
3907 case 12 ... 13: /* TX1 */
3908 case 16: case 18:/* Rx Ram Buffer 1 */
3909 case 20 ... 21: /* Tx Ram Buffer 1 */
3910 case 24: /* Rx MAC Fifo 1 */
3911 case 26: /* Tx MAC Fifo 1 */
3912 case 28 ... 29: /* Descriptor and status unit */
3913 case 30: /* GPHY 1*/
3914 case 32 ... 39: /* Pattern Ram 1 */
3915 case 48: case 50: /* TCP Segmentation 1 */
3916 case 56 ... 60: /* PCI space */
3917 case 80 ... 84: /* GMAC 1 */
3926 * Returns copy of control register region
3927 * Note: ethtool_get_regs always provides full size (16k) buffer
3929 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
3932 const struct sky2_port *sky2 = netdev_priv(dev);
3933 const void __iomem *io = sky2->hw->regs;
3938 for (b = 0; b < 128; b++) {
3939 /* skip poisonous diagnostic ram region in block 3 */
3941 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
3942 else if (sky2_reg_access_ok(sky2->hw, b))
3943 memcpy_fromio(p, io, 128);
3952 /* In order to do Jumbo packets on these chips, need to turn off the
3953 * transmit store/forward. Therefore checksum offload won't work.
3955 static int no_tx_offload(struct net_device *dev)
3957 const struct sky2_port *sky2 = netdev_priv(dev);
3958 const struct sky2_hw *hw = sky2->hw;
3960 return dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U;
3963 static int sky2_set_tx_csum(struct net_device *dev, u32 data)
3965 if (data && no_tx_offload(dev))
3968 return ethtool_op_set_tx_csum(dev, data);
3972 static int sky2_set_tso(struct net_device *dev, u32 data)
3974 if (data && no_tx_offload(dev))
3977 return ethtool_op_set_tso(dev, data);
3980 static int sky2_get_eeprom_len(struct net_device *dev)
3982 struct sky2_port *sky2 = netdev_priv(dev);
3983 struct sky2_hw *hw = sky2->hw;
3986 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
3987 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
3990 static int sky2_vpd_wait(const struct sky2_hw *hw, int cap, u16 busy)
3992 unsigned long start = jiffies;
3994 while ( (sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F) == busy) {
3995 /* Can take up to 10.6 ms for write */
3996 if (time_after(jiffies, start + HZ/4)) {
3997 dev_err(&hw->pdev->dev, PFX "VPD cycle timed out");
4006 static int sky2_vpd_read(struct sky2_hw *hw, int cap, void *data,
4007 u16 offset, size_t length)
4011 while (length > 0) {
4014 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
4015 rc = sky2_vpd_wait(hw, cap, 0);
4019 val = sky2_pci_read32(hw, cap + PCI_VPD_DATA);
4021 memcpy(data, &val, min(sizeof(val), length));
4022 offset += sizeof(u32);
4023 data += sizeof(u32);
4024 length -= sizeof(u32);
4030 static int sky2_vpd_write(struct sky2_hw *hw, int cap, const void *data,
4031 u16 offset, unsigned int length)
4036 for (i = 0; i < length; i += sizeof(u32)) {
4037 u32 val = *(u32 *)(data + i);
4039 sky2_pci_write32(hw, cap + PCI_VPD_DATA, val);
4040 sky2_pci_write32(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
4042 rc = sky2_vpd_wait(hw, cap, PCI_VPD_ADDR_F);
4049 static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4052 struct sky2_port *sky2 = netdev_priv(dev);
4053 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4058 eeprom->magic = SKY2_EEPROM_MAGIC;
4060 return sky2_vpd_read(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4063 static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4066 struct sky2_port *sky2 = netdev_priv(dev);
4067 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4072 if (eeprom->magic != SKY2_EEPROM_MAGIC)
4075 /* Partial writes not supported */
4076 if ((eeprom->offset & 3) || (eeprom->len & 3))
4079 return sky2_vpd_write(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4083 static const struct ethtool_ops sky2_ethtool_ops = {
4084 .get_settings = sky2_get_settings,
4085 .set_settings = sky2_set_settings,
4086 .get_drvinfo = sky2_get_drvinfo,
4087 .get_wol = sky2_get_wol,
4088 .set_wol = sky2_set_wol,
4089 .get_msglevel = sky2_get_msglevel,
4090 .set_msglevel = sky2_set_msglevel,
4091 .nway_reset = sky2_nway_reset,
4092 .get_regs_len = sky2_get_regs_len,
4093 .get_regs = sky2_get_regs,
4094 .get_link = ethtool_op_get_link,
4095 .get_eeprom_len = sky2_get_eeprom_len,
4096 .get_eeprom = sky2_get_eeprom,
4097 .set_eeprom = sky2_set_eeprom,
4098 .set_sg = ethtool_op_set_sg,
4099 .set_tx_csum = sky2_set_tx_csum,
4100 .set_tso = sky2_set_tso,
4101 .get_rx_csum = sky2_get_rx_csum,
4102 .set_rx_csum = sky2_set_rx_csum,
4103 .get_strings = sky2_get_strings,
4104 .get_coalesce = sky2_get_coalesce,
4105 .set_coalesce = sky2_set_coalesce,
4106 .get_ringparam = sky2_get_ringparam,
4107 .set_ringparam = sky2_set_ringparam,
4108 .get_pauseparam = sky2_get_pauseparam,
4109 .set_pauseparam = sky2_set_pauseparam,
4110 .phys_id = sky2_phys_id,
4111 .get_sset_count = sky2_get_sset_count,
4112 .get_ethtool_stats = sky2_get_ethtool_stats,
4115 #ifdef CONFIG_SKY2_DEBUG
4117 static struct dentry *sky2_debug;
4121 * Read and parse the first part of Vital Product Data
4123 #define VPD_SIZE 128
4124 #define VPD_MAGIC 0x82
4126 static const struct vpd_tag {
4130 { "PN", "Part Number" },
4131 { "EC", "Engineering Level" },
4132 { "MN", "Manufacturer" },
4133 { "SN", "Serial Number" },
4134 { "YA", "Asset Tag" },
4135 { "VL", "First Error Log Message" },
4136 { "VF", "Second Error Log Message" },
4137 { "VB", "Boot Agent ROM Configuration" },
4138 { "VE", "EFI UNDI Configuration" },
4141 static void sky2_show_vpd(struct seq_file *seq, struct sky2_hw *hw)
4149 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4150 vpd_size = 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4152 seq_printf(seq, "%s Product Data\n", pci_name(hw->pdev));
4153 buf = kmalloc(vpd_size, GFP_KERNEL);
4155 seq_puts(seq, "no memory!\n");
4159 if (pci_read_vpd(hw->pdev, 0, vpd_size, buf) < 0) {
4160 seq_puts(seq, "VPD read failed\n");
4164 if (buf[0] != VPD_MAGIC) {
4165 seq_printf(seq, "VPD tag mismatch: %#x\n", buf[0]);
4169 if (len == 0 || len > vpd_size - 4) {
4170 seq_printf(seq, "Invalid id length: %d\n", len);
4174 seq_printf(seq, "%.*s\n", len, buf + 3);
4177 while (offs < vpd_size - 4) {
4180 if (!memcmp("RW", buf + offs, 2)) /* end marker */
4182 len = buf[offs + 2];
4183 if (offs + len + 3 >= vpd_size)
4186 for (i = 0; i < ARRAY_SIZE(vpd_tags); i++) {
4187 if (!memcmp(vpd_tags[i].tag, buf + offs, 2)) {
4188 seq_printf(seq, " %s: %.*s\n",
4189 vpd_tags[i].label, len, buf + offs + 3);
4199 static int sky2_debug_show(struct seq_file *seq, void *v)
4201 struct net_device *dev = seq->private;
4202 const struct sky2_port *sky2 = netdev_priv(dev);
4203 struct sky2_hw *hw = sky2->hw;
4204 unsigned port = sky2->port;
4208 sky2_show_vpd(seq, hw);
4210 seq_printf(seq, "\nIRQ src=%x mask=%x control=%x\n",
4211 sky2_read32(hw, B0_ISRC),
4212 sky2_read32(hw, B0_IMSK),
4213 sky2_read32(hw, B0_Y2_SP_ICR));
4215 if (!netif_running(dev)) {
4216 seq_printf(seq, "network not running\n");
4220 napi_disable(&hw->napi);
4221 last = sky2_read16(hw, STAT_PUT_IDX);
4223 if (hw->st_idx == last)
4224 seq_puts(seq, "Status ring (empty)\n");
4226 seq_puts(seq, "Status ring\n");
4227 for (idx = hw->st_idx; idx != last && idx < STATUS_RING_SIZE;
4228 idx = RING_NEXT(idx, STATUS_RING_SIZE)) {
4229 const struct sky2_status_le *le = hw->st_le + idx;
4230 seq_printf(seq, "[%d] %#x %d %#x\n",
4231 idx, le->opcode, le->length, le->status);
4233 seq_puts(seq, "\n");
4236 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
4237 sky2->tx_cons, sky2->tx_prod,
4238 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
4239 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
4241 /* Dump contents of tx ring */
4243 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < sky2->tx_ring_size;
4244 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
4245 const struct sky2_tx_le *le = sky2->tx_le + idx;
4246 u32 a = le32_to_cpu(le->addr);
4249 seq_printf(seq, "%u:", idx);
4252 switch(le->opcode & ~HW_OWNER) {
4254 seq_printf(seq, " %#x:", a);
4257 seq_printf(seq, " mtu=%d", a);
4260 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
4263 seq_printf(seq, " csum=%#x", a);
4266 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
4269 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
4272 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
4275 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
4276 a, le16_to_cpu(le->length));
4279 if (le->ctrl & EOP) {
4280 seq_putc(seq, '\n');
4285 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
4286 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
4287 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
4288 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
4290 sky2_read32(hw, B0_Y2_SP_LISR);
4291 napi_enable(&hw->napi);
4295 static int sky2_debug_open(struct inode *inode, struct file *file)
4297 return single_open(file, sky2_debug_show, inode->i_private);
4300 static const struct file_operations sky2_debug_fops = {
4301 .owner = THIS_MODULE,
4302 .open = sky2_debug_open,
4304 .llseek = seq_lseek,
4305 .release = single_release,
4309 * Use network device events to create/remove/rename
4310 * debugfs file entries
4312 static int sky2_device_event(struct notifier_block *unused,
4313 unsigned long event, void *ptr)
4315 struct net_device *dev = ptr;
4316 struct sky2_port *sky2 = netdev_priv(dev);
4318 if (dev->netdev_ops->ndo_open != sky2_up || !sky2_debug)
4322 case NETDEV_CHANGENAME:
4323 if (sky2->debugfs) {
4324 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
4325 sky2_debug, dev->name);
4329 case NETDEV_GOING_DOWN:
4330 if (sky2->debugfs) {
4331 printk(KERN_DEBUG PFX "%s: remove debugfs\n",
4333 debugfs_remove(sky2->debugfs);
4334 sky2->debugfs = NULL;
4339 sky2->debugfs = debugfs_create_file(dev->name, S_IRUGO,
4342 if (IS_ERR(sky2->debugfs))
4343 sky2->debugfs = NULL;
4349 static struct notifier_block sky2_notifier = {
4350 .notifier_call = sky2_device_event,
4354 static __init void sky2_debug_init(void)
4358 ent = debugfs_create_dir("sky2", NULL);
4359 if (!ent || IS_ERR(ent))
4363 register_netdevice_notifier(&sky2_notifier);
4366 static __exit void sky2_debug_cleanup(void)
4369 unregister_netdevice_notifier(&sky2_notifier);
4370 debugfs_remove(sky2_debug);
4376 #define sky2_debug_init()
4377 #define sky2_debug_cleanup()
4380 /* Two copies of network device operations to handle special case of
4381 not allowing netpoll on second port */
4382 static const struct net_device_ops sky2_netdev_ops[2] = {
4384 .ndo_open = sky2_up,
4385 .ndo_stop = sky2_down,
4386 .ndo_start_xmit = sky2_xmit_frame,
4387 .ndo_do_ioctl = sky2_ioctl,
4388 .ndo_validate_addr = eth_validate_addr,
4389 .ndo_set_mac_address = sky2_set_mac_address,
4390 .ndo_set_multicast_list = sky2_set_multicast,
4391 .ndo_change_mtu = sky2_change_mtu,
4392 .ndo_tx_timeout = sky2_tx_timeout,
4393 #ifdef SKY2_VLAN_TAG_USED
4394 .ndo_vlan_rx_register = sky2_vlan_rx_register,
4396 #ifdef CONFIG_NET_POLL_CONTROLLER
4397 .ndo_poll_controller = sky2_netpoll,
4401 .ndo_open = sky2_up,
4402 .ndo_stop = sky2_down,
4403 .ndo_start_xmit = sky2_xmit_frame,
4404 .ndo_do_ioctl = sky2_ioctl,
4405 .ndo_validate_addr = eth_validate_addr,
4406 .ndo_set_mac_address = sky2_set_mac_address,
4407 .ndo_set_multicast_list = sky2_set_multicast,
4408 .ndo_change_mtu = sky2_change_mtu,
4409 .ndo_tx_timeout = sky2_tx_timeout,
4410 #ifdef SKY2_VLAN_TAG_USED
4411 .ndo_vlan_rx_register = sky2_vlan_rx_register,
4416 /* Initialize network device */
4417 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
4419 int highmem, int wol)
4421 struct sky2_port *sky2;
4422 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
4425 dev_err(&hw->pdev->dev, "etherdev alloc failed\n");
4429 SET_NETDEV_DEV(dev, &hw->pdev->dev);
4430 dev->irq = hw->pdev->irq;
4431 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
4432 dev->watchdog_timeo = TX_WATCHDOG;
4433 dev->netdev_ops = &sky2_netdev_ops[port];
4435 sky2 = netdev_priv(dev);
4438 sky2->msg_enable = netif_msg_init(debug, default_msg);
4440 /* Auto speed and flow control */
4441 sky2->flags = SKY2_FLAG_AUTO_SPEED | SKY2_FLAG_AUTO_PAUSE;
4442 if (hw->chip_id != CHIP_ID_YUKON_XL)
4443 sky2->flags |= SKY2_FLAG_RX_CHECKSUM;
4445 sky2->flow_mode = FC_BOTH;
4449 sky2->advertising = sky2_supported_modes(hw);
4452 spin_lock_init(&sky2->phy_lock);
4454 sky2->tx_pending = TX_DEF_PENDING;
4455 sky2->tx_ring_size = roundup_pow_of_two(TX_DEF_PENDING+1);
4456 sky2->rx_pending = RX_DEF_PENDING;
4458 hw->dev[port] = dev;
4462 dev->features |= NETIF_F_TSO | NETIF_F_IP_CSUM | NETIF_F_SG;
4464 dev->features |= NETIF_F_HIGHDMA;
4466 #ifdef SKY2_VLAN_TAG_USED
4467 /* The workaround for FE+ status conflicts with VLAN tag detection. */
4468 if (!(sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
4469 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0)) {
4470 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
4474 /* read the mac address */
4475 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
4476 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
4481 static void __devinit sky2_show_addr(struct net_device *dev)
4483 const struct sky2_port *sky2 = netdev_priv(dev);
4485 if (netif_msg_probe(sky2))
4486 printk(KERN_INFO PFX "%s: addr %pM\n",
4487 dev->name, dev->dev_addr);
4490 /* Handle software interrupt used during MSI test */
4491 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
4493 struct sky2_hw *hw = dev_id;
4494 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4499 if (status & Y2_IS_IRQ_SW) {
4500 hw->flags |= SKY2_HW_USE_MSI;
4501 wake_up(&hw->msi_wait);
4502 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4504 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4509 /* Test interrupt path by forcing a a software IRQ */
4510 static int __devinit sky2_test_msi(struct sky2_hw *hw)
4512 struct pci_dev *pdev = hw->pdev;
4515 init_waitqueue_head (&hw->msi_wait);
4517 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4519 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4521 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4525 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4526 sky2_read8(hw, B0_CTST);
4528 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4530 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4531 /* MSI test failed, go back to INTx mode */
4532 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4533 "switching to INTx mode.\n");
4536 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4539 sky2_write32(hw, B0_IMSK, 0);
4540 sky2_read32(hw, B0_IMSK);
4542 free_irq(pdev->irq, hw);
4547 /* This driver supports yukon2 chipset only */
4548 static const char *sky2_name(u8 chipid, char *buf, int sz)
4550 const char *name[] = {
4552 "EC Ultra", /* 0xb4 */
4553 "Extreme", /* 0xb5 */
4557 "Supreme", /* 0xb9 */
4559 "Unknown", /* 0xbb */
4560 "Optima", /* 0xbc */
4563 if (chipid >= CHIP_ID_YUKON_XL && chipid <= CHIP_ID_YUKON_OPT)
4564 strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
4566 snprintf(buf, sz, "(chip %#x)", chipid);
4570 static int __devinit sky2_probe(struct pci_dev *pdev,
4571 const struct pci_device_id *ent)
4573 struct net_device *dev;
4575 int err, using_dac = 0, wol_default;
4579 err = pci_enable_device(pdev);
4581 dev_err(&pdev->dev, "cannot enable PCI device\n");
4585 /* Get configuration information
4586 * Note: only regular PCI config access once to test for HW issues
4587 * other PCI access through shared memory for speed and to
4588 * avoid MMCONFIG problems.
4590 err = pci_read_config_dword(pdev, PCI_DEV_REG2, ®);
4592 dev_err(&pdev->dev, "PCI read config failed\n");
4597 dev_err(&pdev->dev, "PCI configuration read error\n");
4601 err = pci_request_regions(pdev, DRV_NAME);
4603 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4604 goto err_out_disable;
4607 pci_set_master(pdev);
4609 if (sizeof(dma_addr_t) > sizeof(u32) &&
4610 !(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))) {
4612 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4614 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4615 "for consistent allocations\n");
4616 goto err_out_free_regions;
4619 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4621 dev_err(&pdev->dev, "no usable DMA configuration\n");
4622 goto err_out_free_regions;
4628 /* The sk98lin vendor driver uses hardware byte swapping but
4629 * this driver uses software swapping.
4631 reg &= ~PCI_REV_DESC;
4632 err = pci_write_config_dword(pdev,PCI_DEV_REG2, reg);
4634 dev_err(&pdev->dev, "PCI write config failed\n");
4635 goto err_out_free_regions;
4639 wol_default = device_may_wakeup(&pdev->dev) ? WAKE_MAGIC : 0;
4643 hw = kzalloc(sizeof(*hw) + strlen(DRV_NAME "@pci:")
4644 + strlen(pci_name(pdev)) + 1, GFP_KERNEL);
4646 dev_err(&pdev->dev, "cannot allocate hardware struct\n");
4647 goto err_out_free_regions;
4651 sprintf(hw->irq_name, DRV_NAME "@pci:%s", pci_name(pdev));
4653 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
4655 dev_err(&pdev->dev, "cannot map device registers\n");
4656 goto err_out_free_hw;
4659 /* ring for status responses */
4660 hw->st_le = pci_alloc_consistent(pdev, STATUS_LE_BYTES, &hw->st_dma);
4662 goto err_out_iounmap;
4664 err = sky2_init(hw);
4666 goto err_out_iounmap;
4668 dev_info(&pdev->dev, "Yukon-2 %s chip revision %d\n",
4669 sky2_name(hw->chip_id, buf1, sizeof(buf1)), hw->chip_rev);
4673 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
4676 goto err_out_free_pci;
4679 if (!disable_msi && pci_enable_msi(pdev) == 0) {
4680 err = sky2_test_msi(hw);
4681 if (err == -EOPNOTSUPP)
4682 pci_disable_msi(pdev);
4684 goto err_out_free_netdev;
4687 err = register_netdev(dev);
4689 dev_err(&pdev->dev, "cannot register net device\n");
4690 goto err_out_free_netdev;
4693 netif_carrier_off(dev);
4695 netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
4697 err = request_irq(pdev->irq, sky2_intr,
4698 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
4701 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4702 goto err_out_unregister;
4704 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4705 napi_enable(&hw->napi);
4707 sky2_show_addr(dev);
4709 if (hw->ports > 1) {
4710 struct net_device *dev1;
4713 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
4714 if (dev1 && (err = register_netdev(dev1)) == 0)
4715 sky2_show_addr(dev1);
4717 dev_warn(&pdev->dev,
4718 "register of second port failed (%d)\n", err);
4726 setup_timer(&hw->watchdog_timer, sky2_watchdog, (unsigned long) hw);
4727 INIT_WORK(&hw->restart_work, sky2_restart);
4729 pci_set_drvdata(pdev, hw);
4730 pdev->d3_delay = 150;
4735 if (hw->flags & SKY2_HW_USE_MSI)
4736 pci_disable_msi(pdev);
4737 unregister_netdev(dev);
4738 err_out_free_netdev:
4741 sky2_write8(hw, B0_CTST, CS_RST_SET);
4742 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4747 err_out_free_regions:
4748 pci_release_regions(pdev);
4750 pci_disable_device(pdev);
4752 pci_set_drvdata(pdev, NULL);
4756 static void __devexit sky2_remove(struct pci_dev *pdev)
4758 struct sky2_hw *hw = pci_get_drvdata(pdev);
4764 del_timer_sync(&hw->watchdog_timer);
4765 cancel_work_sync(&hw->restart_work);
4767 for (i = hw->ports-1; i >= 0; --i)
4768 unregister_netdev(hw->dev[i]);
4770 sky2_write32(hw, B0_IMSK, 0);
4774 sky2_write8(hw, B0_CTST, CS_RST_SET);
4775 sky2_read8(hw, B0_CTST);
4777 free_irq(pdev->irq, hw);
4778 if (hw->flags & SKY2_HW_USE_MSI)
4779 pci_disable_msi(pdev);
4780 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4781 pci_release_regions(pdev);
4782 pci_disable_device(pdev);
4784 for (i = hw->ports-1; i >= 0; --i)
4785 free_netdev(hw->dev[i]);
4790 pci_set_drvdata(pdev, NULL);
4793 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
4795 struct sky2_hw *hw = pci_get_drvdata(pdev);
4801 del_timer_sync(&hw->watchdog_timer);
4802 cancel_work_sync(&hw->restart_work);
4805 for (i = 0; i < hw->ports; i++) {
4806 struct net_device *dev = hw->dev[i];
4807 struct sky2_port *sky2 = netdev_priv(dev);
4812 sky2_wol_init(sky2);
4817 device_set_wakeup_enable(&pdev->dev, wol != 0);
4819 sky2_write32(hw, B0_IMSK, 0);
4820 napi_disable(&hw->napi);
4824 pci_save_state(pdev);
4825 pci_enable_wake(pdev, pci_choose_state(pdev, state), wol);
4826 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4832 static int sky2_resume(struct pci_dev *pdev)
4834 struct sky2_hw *hw = pci_get_drvdata(pdev);
4840 err = pci_set_power_state(pdev, PCI_D0);
4844 err = pci_restore_state(pdev);
4848 pci_enable_wake(pdev, PCI_D0, 0);
4850 /* Re-enable all clocks */
4851 err = pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
4853 dev_err(&pdev->dev, "PCI write config failed\n");
4858 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4859 napi_enable(&hw->napi);
4862 for (i = 0; i < hw->ports; i++) {
4863 err = sky2_reattach(hw->dev[i]);
4873 dev_err(&pdev->dev, "resume failed (%d)\n", err);
4874 pci_disable_device(pdev);
4879 static void sky2_shutdown(struct pci_dev *pdev)
4881 sky2_suspend(pdev, PMSG_SUSPEND);
4884 static struct pci_driver sky2_driver = {
4886 .id_table = sky2_id_table,
4887 .probe = sky2_probe,
4888 .remove = __devexit_p(sky2_remove),
4890 .suspend = sky2_suspend,
4891 .resume = sky2_resume,
4893 .shutdown = sky2_shutdown,
4896 static int __init sky2_init_module(void)
4898 pr_info(PFX "driver version " DRV_VERSION "\n");
4901 return pci_register_driver(&sky2_driver);
4904 static void __exit sky2_cleanup_module(void)
4906 pci_unregister_driver(&sky2_driver);
4907 sky2_debug_cleanup();
4910 module_init(sky2_init_module);
4911 module_exit(sky2_cleanup_module);
4913 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
4914 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
4915 MODULE_LICENSE("GPL");
4916 MODULE_VERSION(DRV_VERSION);