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 /* enable Store & Forward mode for TX */
803 if (dev->mtu <= ETH_DATA_LEN)
804 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
805 TX_JUMBO_DIS | TX_STFW_ENA);
808 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
809 TX_JUMBO_ENA| TX_STFW_ENA);
811 if (dev->mtu <= ETH_DATA_LEN)
812 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
814 /* set Tx GMAC FIFO Almost Empty Threshold */
815 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
816 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
818 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
820 /* Can't do offload because of lack of store/forward */
821 dev->features &= ~(NETIF_F_TSO | NETIF_F_SG | NETIF_F_ALL_CSUM);
826 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
828 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
832 const u8 *addr = hw->dev[port]->dev_addr;
834 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
835 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
837 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
839 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
840 /* WA DEV_472 -- looks like crossed wires on port 2 */
841 /* clear GMAC 1 Control reset */
842 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
844 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
845 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
846 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
847 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
848 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
851 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
853 /* Enable Transmit FIFO Underrun */
854 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
856 spin_lock_bh(&sky2->phy_lock);
857 sky2_phy_power_up(hw, port);
858 sky2_phy_init(hw, port);
859 spin_unlock_bh(&sky2->phy_lock);
862 reg = gma_read16(hw, port, GM_PHY_ADDR);
863 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
865 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
866 gma_read16(hw, port, i);
867 gma_write16(hw, port, GM_PHY_ADDR, reg);
869 /* transmit control */
870 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
872 /* receive control reg: unicast + multicast + no FCS */
873 gma_write16(hw, port, GM_RX_CTRL,
874 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
876 /* transmit flow control */
877 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
879 /* transmit parameter */
880 gma_write16(hw, port, GM_TX_PARAM,
881 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
882 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
883 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
884 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
886 /* serial mode register */
887 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
888 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
890 if (hw->dev[port]->mtu > ETH_DATA_LEN)
891 reg |= GM_SMOD_JUMBO_ENA;
893 gma_write16(hw, port, GM_SERIAL_MODE, reg);
895 /* virtual address for data */
896 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
898 /* physical address: used for pause frames */
899 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
901 /* ignore counter overflows */
902 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
903 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
904 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
906 /* Configure Rx MAC FIFO */
907 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
908 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
909 if (hw->chip_id == CHIP_ID_YUKON_EX ||
910 hw->chip_id == CHIP_ID_YUKON_FE_P)
911 rx_reg |= GMF_RX_OVER_ON;
913 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
915 if (hw->chip_id == CHIP_ID_YUKON_XL) {
916 /* Hardware errata - clear flush mask */
917 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0);
919 /* Flush Rx MAC FIFO on any flow control or error */
920 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
923 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
924 reg = RX_GMF_FL_THR_DEF + 1;
925 /* Another magic mystery workaround from sk98lin */
926 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
927 hw->chip_rev == CHIP_REV_YU_FE2_A0)
929 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
931 /* Configure Tx MAC FIFO */
932 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
933 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
935 /* On chips without ram buffer, pause is controled by MAC level */
936 if (!(hw->flags & SKY2_HW_RAM_BUFFER)) {
937 /* Pause threshold is scaled by 8 in bytes */
938 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
939 hw->chip_rev == CHIP_REV_YU_FE2_A0)
943 sky2_write16(hw, SK_REG(port, RX_GMF_UP_THR), reg);
944 sky2_write16(hw, SK_REG(port, RX_GMF_LP_THR), 768 / 8);
946 sky2_set_tx_stfwd(hw, port);
949 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
950 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
951 /* disable dynamic watermark */
952 reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA));
953 reg &= ~TX_DYN_WM_ENA;
954 sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg);
958 /* Assign Ram Buffer allocation to queue */
959 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
963 /* convert from K bytes to qwords used for hw register */
966 end = start + space - 1;
968 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
969 sky2_write32(hw, RB_ADDR(q, RB_START), start);
970 sky2_write32(hw, RB_ADDR(q, RB_END), end);
971 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
972 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
974 if (q == Q_R1 || q == Q_R2) {
975 u32 tp = space - space/4;
977 /* On receive queue's set the thresholds
978 * give receiver priority when > 3/4 full
979 * send pause when down to 2K
981 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
982 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
985 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
986 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
988 /* Enable store & forward on Tx queue's because
989 * Tx FIFO is only 1K on Yukon
991 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
994 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
995 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
998 /* Setup Bus Memory Interface */
999 static void sky2_qset(struct sky2_hw *hw, u16 q)
1001 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
1002 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
1003 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
1004 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
1007 /* Setup prefetch unit registers. This is the interface between
1008 * hardware and driver list elements
1010 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
1011 dma_addr_t addr, u32 last)
1013 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1014 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
1015 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), upper_32_bits(addr));
1016 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), lower_32_bits(addr));
1017 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
1018 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
1020 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
1023 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2, u16 *slot)
1025 struct sky2_tx_le *le = sky2->tx_le + *slot;
1027 *slot = RING_NEXT(*slot, sky2->tx_ring_size);
1032 static void tx_init(struct sky2_port *sky2)
1034 struct sky2_tx_le *le;
1036 sky2->tx_prod = sky2->tx_cons = 0;
1037 sky2->tx_tcpsum = 0;
1038 sky2->tx_last_mss = 0;
1040 le = get_tx_le(sky2, &sky2->tx_prod);
1042 le->opcode = OP_ADDR64 | HW_OWNER;
1043 sky2->tx_last_upper = 0;
1046 /* Update chip's next pointer */
1047 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
1049 /* Make sure write' to descriptors are complete before we tell hardware */
1051 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
1053 /* Synchronize I/O on since next processor may write to tail */
1058 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
1060 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
1061 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
1066 /* Build description to hardware for one receive segment */
1067 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
1068 dma_addr_t map, unsigned len)
1070 struct sky2_rx_le *le;
1072 if (sizeof(dma_addr_t) > sizeof(u32)) {
1073 le = sky2_next_rx(sky2);
1074 le->addr = cpu_to_le32(upper_32_bits(map));
1075 le->opcode = OP_ADDR64 | HW_OWNER;
1078 le = sky2_next_rx(sky2);
1079 le->addr = cpu_to_le32(lower_32_bits(map));
1080 le->length = cpu_to_le16(len);
1081 le->opcode = op | HW_OWNER;
1084 /* Build description to hardware for one possibly fragmented skb */
1085 static void sky2_rx_submit(struct sky2_port *sky2,
1086 const struct rx_ring_info *re)
1090 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
1092 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
1093 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
1097 static int sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
1100 struct sk_buff *skb = re->skb;
1103 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
1104 if (pci_dma_mapping_error(pdev, re->data_addr))
1107 pci_unmap_len_set(re, data_size, size);
1109 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1110 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1112 re->frag_addr[i] = pci_map_page(pdev, frag->page,
1115 PCI_DMA_FROMDEVICE);
1117 if (pci_dma_mapping_error(pdev, re->frag_addr[i]))
1118 goto map_page_error;
1124 pci_unmap_page(pdev, re->frag_addr[i],
1125 skb_shinfo(skb)->frags[i].size,
1126 PCI_DMA_FROMDEVICE);
1129 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
1130 PCI_DMA_FROMDEVICE);
1133 if (net_ratelimit())
1134 dev_warn(&pdev->dev, "%s: rx mapping error\n",
1139 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1141 struct sk_buff *skb = re->skb;
1144 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
1145 PCI_DMA_FROMDEVICE);
1147 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1148 pci_unmap_page(pdev, re->frag_addr[i],
1149 skb_shinfo(skb)->frags[i].size,
1150 PCI_DMA_FROMDEVICE);
1153 /* Tell chip where to start receive checksum.
1154 * Actually has two checksums, but set both same to avoid possible byte
1157 static void rx_set_checksum(struct sky2_port *sky2)
1159 struct sky2_rx_le *le = sky2_next_rx(sky2);
1161 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1163 le->opcode = OP_TCPSTART | HW_OWNER;
1165 sky2_write32(sky2->hw,
1166 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1167 (sky2->flags & SKY2_FLAG_RX_CHECKSUM)
1168 ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
1172 * The RX Stop command will not work for Yukon-2 if the BMU does not
1173 * reach the end of packet and since we can't make sure that we have
1174 * incoming data, we must reset the BMU while it is not doing a DMA
1175 * transfer. Since it is possible that the RX path is still active,
1176 * the RX RAM buffer will be stopped first, so any possible incoming
1177 * data will not trigger a DMA. After the RAM buffer is stopped, the
1178 * BMU is polled until any DMA in progress is ended and only then it
1181 static void sky2_rx_stop(struct sky2_port *sky2)
1183 struct sky2_hw *hw = sky2->hw;
1184 unsigned rxq = rxqaddr[sky2->port];
1187 /* disable the RAM Buffer receive queue */
1188 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1190 for (i = 0; i < 0xffff; i++)
1191 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1192 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1195 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
1196 sky2->netdev->name);
1198 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1200 /* reset the Rx prefetch unit */
1201 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1205 /* Clean out receive buffer area, assumes receiver hardware stopped */
1206 static void sky2_rx_clean(struct sky2_port *sky2)
1210 memset(sky2->rx_le, 0, RX_LE_BYTES);
1211 for (i = 0; i < sky2->rx_pending; i++) {
1212 struct rx_ring_info *re = sky2->rx_ring + i;
1215 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1222 /* Basic MII support */
1223 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1225 struct mii_ioctl_data *data = if_mii(ifr);
1226 struct sky2_port *sky2 = netdev_priv(dev);
1227 struct sky2_hw *hw = sky2->hw;
1228 int err = -EOPNOTSUPP;
1230 if (!netif_running(dev))
1231 return -ENODEV; /* Phy still in reset */
1235 data->phy_id = PHY_ADDR_MARV;
1241 spin_lock_bh(&sky2->phy_lock);
1242 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1243 spin_unlock_bh(&sky2->phy_lock);
1245 data->val_out = val;
1250 spin_lock_bh(&sky2->phy_lock);
1251 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1253 spin_unlock_bh(&sky2->phy_lock);
1259 #ifdef SKY2_VLAN_TAG_USED
1260 static void sky2_set_vlan_mode(struct sky2_hw *hw, u16 port, bool onoff)
1263 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1265 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1268 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1270 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1275 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
1277 struct sky2_port *sky2 = netdev_priv(dev);
1278 struct sky2_hw *hw = sky2->hw;
1279 u16 port = sky2->port;
1281 netif_tx_lock_bh(dev);
1282 napi_disable(&hw->napi);
1285 sky2_set_vlan_mode(hw, port, grp != NULL);
1287 sky2_read32(hw, B0_Y2_SP_LISR);
1288 napi_enable(&hw->napi);
1289 netif_tx_unlock_bh(dev);
1293 /* Amount of required worst case padding in rx buffer */
1294 static inline unsigned sky2_rx_pad(const struct sky2_hw *hw)
1296 return (hw->flags & SKY2_HW_RAM_BUFFER) ? 8 : 2;
1300 * Allocate an skb for receiving. If the MTU is large enough
1301 * make the skb non-linear with a fragment list of pages.
1303 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2)
1305 struct sk_buff *skb;
1308 skb = netdev_alloc_skb(sky2->netdev,
1309 sky2->rx_data_size + sky2_rx_pad(sky2->hw));
1313 if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) {
1314 unsigned char *start;
1316 * Workaround for a bug in FIFO that cause hang
1317 * if the FIFO if the receive buffer is not 64 byte aligned.
1318 * The buffer returned from netdev_alloc_skb is
1319 * aligned except if slab debugging is enabled.
1321 start = PTR_ALIGN(skb->data, 8);
1322 skb_reserve(skb, start - skb->data);
1324 skb_reserve(skb, NET_IP_ALIGN);
1326 for (i = 0; i < sky2->rx_nfrags; i++) {
1327 struct page *page = alloc_page(GFP_ATOMIC);
1331 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1341 static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1343 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1347 * Allocate and setup receiver buffer pool.
1348 * Normal case this ends up creating one list element for skb
1349 * in the receive ring. Worst case if using large MTU and each
1350 * allocation falls on a different 64 bit region, that results
1351 * in 6 list elements per ring entry.
1352 * One element is used for checksum enable/disable, and one
1353 * extra to avoid wrap.
1355 static int sky2_rx_start(struct sky2_port *sky2)
1357 struct sky2_hw *hw = sky2->hw;
1358 struct rx_ring_info *re;
1359 unsigned rxq = rxqaddr[sky2->port];
1360 unsigned i, size, thresh;
1362 sky2->rx_put = sky2->rx_next = 0;
1365 /* On PCI express lowering the watermark gives better performance */
1366 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
1367 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1369 /* These chips have no ram buffer?
1370 * MAC Rx RAM Read is controlled by hardware */
1371 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1372 (hw->chip_rev == CHIP_REV_YU_EC_U_A1 ||
1373 hw->chip_rev == CHIP_REV_YU_EC_U_B0))
1374 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1376 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1378 if (!(hw->flags & SKY2_HW_NEW_LE))
1379 rx_set_checksum(sky2);
1381 /* Space needed for frame data + headers rounded up */
1382 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1384 /* Stopping point for hardware truncation */
1385 thresh = (size - 8) / sizeof(u32);
1387 sky2->rx_nfrags = size >> PAGE_SHIFT;
1388 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1390 /* Compute residue after pages */
1391 size -= sky2->rx_nfrags << PAGE_SHIFT;
1393 /* Optimize to handle small packets and headers */
1394 if (size < copybreak)
1396 if (size < ETH_HLEN)
1399 sky2->rx_data_size = size;
1402 for (i = 0; i < sky2->rx_pending; i++) {
1403 re = sky2->rx_ring + i;
1405 re->skb = sky2_rx_alloc(sky2);
1409 if (sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size)) {
1410 dev_kfree_skb(re->skb);
1415 sky2_rx_submit(sky2, re);
1419 * The receiver hangs if it receives frames larger than the
1420 * packet buffer. As a workaround, truncate oversize frames, but
1421 * the register is limited to 9 bits, so if you do frames > 2052
1422 * you better get the MTU right!
1425 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1427 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1428 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1431 /* Tell chip about available buffers */
1432 sky2_rx_update(sky2, rxq);
1434 if (hw->chip_id == CHIP_ID_YUKON_EX ||
1435 hw->chip_id == CHIP_ID_YUKON_SUPR) {
1437 * Disable flushing of non ASF packets;
1438 * must be done after initializing the BMUs;
1439 * drivers without ASF support should do this too, otherwise
1440 * it may happen that they cannot run on ASF devices;
1441 * remember that the MAC FIFO isn't reset during initialization.
1443 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_MACSEC_FLUSH_OFF);
1446 if (hw->chip_id >= CHIP_ID_YUKON_SUPR) {
1447 /* Enable RX Home Address & Routing Header checksum fix */
1448 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_FL_CTRL),
1449 RX_IPV6_SA_MOB_ENA | RX_IPV6_DA_MOB_ENA);
1451 /* Enable TX Home Address & Routing Header checksum fix */
1452 sky2_write32(hw, Q_ADDR(txqaddr[sky2->port], Q_TEST),
1453 TBMU_TEST_HOME_ADD_FIX_EN | TBMU_TEST_ROUTING_ADD_FIX_EN);
1460 sky2_rx_clean(sky2);
1464 static int sky2_alloc_buffers(struct sky2_port *sky2)
1466 struct sky2_hw *hw = sky2->hw;
1468 /* must be power of 2 */
1469 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1470 sky2->tx_ring_size *
1471 sizeof(struct sky2_tx_le),
1476 sky2->tx_ring = kcalloc(sky2->tx_ring_size, sizeof(struct tx_ring_info),
1481 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1485 memset(sky2->rx_le, 0, RX_LE_BYTES);
1487 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1497 static void sky2_free_buffers(struct sky2_port *sky2)
1499 struct sky2_hw *hw = sky2->hw;
1502 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1503 sky2->rx_le, sky2->rx_le_map);
1507 pci_free_consistent(hw->pdev,
1508 sky2->tx_ring_size * sizeof(struct sky2_tx_le),
1509 sky2->tx_le, sky2->tx_le_map);
1512 kfree(sky2->tx_ring);
1513 kfree(sky2->rx_ring);
1515 sky2->tx_ring = NULL;
1516 sky2->rx_ring = NULL;
1519 /* Bring up network interface. */
1520 static int sky2_up(struct net_device *dev)
1522 struct sky2_port *sky2 = netdev_priv(dev);
1523 struct sky2_hw *hw = sky2->hw;
1524 unsigned port = sky2->port;
1527 struct net_device *otherdev = hw->dev[sky2->port^1];
1530 * On dual port PCI-X card, there is an problem where status
1531 * can be received out of order due to split transactions
1533 if (otherdev && netif_running(otherdev) &&
1534 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1537 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1538 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1539 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1543 netif_carrier_off(dev);
1545 err = sky2_alloc_buffers(sky2);
1551 sky2_mac_init(hw, port);
1553 /* Register is number of 4K blocks on internal RAM buffer. */
1554 ramsize = sky2_read8(hw, B2_E_0) * 4;
1558 pr_debug(PFX "%s: ram buffer %dK\n", dev->name, ramsize);
1560 rxspace = ramsize / 2;
1562 rxspace = 8 + (2*(ramsize - 16))/3;
1564 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1565 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1567 /* Make sure SyncQ is disabled */
1568 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1572 sky2_qset(hw, txqaddr[port]);
1574 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1575 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1576 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1578 /* Set almost empty threshold */
1579 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1580 hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1581 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1583 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1584 sky2->tx_ring_size - 1);
1586 #ifdef SKY2_VLAN_TAG_USED
1587 sky2_set_vlan_mode(hw, port, sky2->vlgrp != NULL);
1590 err = sky2_rx_start(sky2);
1594 /* Enable interrupts from phy/mac for port */
1595 imask = sky2_read32(hw, B0_IMSK);
1596 imask |= portirq_msk[port];
1597 sky2_write32(hw, B0_IMSK, imask);
1598 sky2_read32(hw, B0_IMSK);
1600 if (netif_msg_ifup(sky2))
1601 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
1606 sky2_free_buffers(sky2);
1610 /* Modular subtraction in ring */
1611 static inline int tx_inuse(const struct sky2_port *sky2)
1613 return (sky2->tx_prod - sky2->tx_cons) & (sky2->tx_ring_size - 1);
1616 /* Number of list elements available for next tx */
1617 static inline int tx_avail(const struct sky2_port *sky2)
1619 return sky2->tx_pending - tx_inuse(sky2);
1622 /* Estimate of number of transmit list elements required */
1623 static unsigned tx_le_req(const struct sk_buff *skb)
1627 count = (skb_shinfo(skb)->nr_frags + 1)
1628 * (sizeof(dma_addr_t) / sizeof(u32));
1630 if (skb_is_gso(skb))
1632 else if (sizeof(dma_addr_t) == sizeof(u32))
1633 ++count; /* possible vlan */
1635 if (skb->ip_summed == CHECKSUM_PARTIAL)
1641 static void sky2_tx_unmap(struct pci_dev *pdev, struct tx_ring_info *re)
1643 if (re->flags & TX_MAP_SINGLE)
1644 pci_unmap_single(pdev, pci_unmap_addr(re, mapaddr),
1645 pci_unmap_len(re, maplen),
1647 else if (re->flags & TX_MAP_PAGE)
1648 pci_unmap_page(pdev, pci_unmap_addr(re, mapaddr),
1649 pci_unmap_len(re, maplen),
1655 * Put one packet in ring for transmit.
1656 * A single packet can generate multiple list elements, and
1657 * the number of ring elements will probably be less than the number
1658 * of list elements used.
1660 static netdev_tx_t sky2_xmit_frame(struct sk_buff *skb,
1661 struct net_device *dev)
1663 struct sky2_port *sky2 = netdev_priv(dev);
1664 struct sky2_hw *hw = sky2->hw;
1665 struct sky2_tx_le *le = NULL;
1666 struct tx_ring_info *re;
1674 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1675 return NETDEV_TX_BUSY;
1677 len = skb_headlen(skb);
1678 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1680 if (pci_dma_mapping_error(hw->pdev, mapping))
1683 slot = sky2->tx_prod;
1684 if (unlikely(netif_msg_tx_queued(sky2)))
1685 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1686 dev->name, slot, skb->len);
1688 /* Send high bits if needed */
1689 upper = upper_32_bits(mapping);
1690 if (upper != sky2->tx_last_upper) {
1691 le = get_tx_le(sky2, &slot);
1692 le->addr = cpu_to_le32(upper);
1693 sky2->tx_last_upper = upper;
1694 le->opcode = OP_ADDR64 | HW_OWNER;
1697 /* Check for TCP Segmentation Offload */
1698 mss = skb_shinfo(skb)->gso_size;
1701 if (!(hw->flags & SKY2_HW_NEW_LE))
1702 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1704 if (mss != sky2->tx_last_mss) {
1705 le = get_tx_le(sky2, &slot);
1706 le->addr = cpu_to_le32(mss);
1708 if (hw->flags & SKY2_HW_NEW_LE)
1709 le->opcode = OP_MSS | HW_OWNER;
1711 le->opcode = OP_LRGLEN | HW_OWNER;
1712 sky2->tx_last_mss = mss;
1717 #ifdef SKY2_VLAN_TAG_USED
1718 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1719 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1721 le = get_tx_le(sky2, &slot);
1723 le->opcode = OP_VLAN|HW_OWNER;
1725 le->opcode |= OP_VLAN;
1726 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1731 /* Handle TCP checksum offload */
1732 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1733 /* On Yukon EX (some versions) encoding change. */
1734 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1735 ctrl |= CALSUM; /* auto checksum */
1737 const unsigned offset = skb_transport_offset(skb);
1740 tcpsum = offset << 16; /* sum start */
1741 tcpsum |= offset + skb->csum_offset; /* sum write */
1743 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1744 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1747 if (tcpsum != sky2->tx_tcpsum) {
1748 sky2->tx_tcpsum = tcpsum;
1750 le = get_tx_le(sky2, &slot);
1751 le->addr = cpu_to_le32(tcpsum);
1752 le->length = 0; /* initial checksum value */
1753 le->ctrl = 1; /* one packet */
1754 le->opcode = OP_TCPLISW | HW_OWNER;
1759 re = sky2->tx_ring + slot;
1760 re->flags = TX_MAP_SINGLE;
1761 pci_unmap_addr_set(re, mapaddr, mapping);
1762 pci_unmap_len_set(re, maplen, len);
1764 le = get_tx_le(sky2, &slot);
1765 le->addr = cpu_to_le32(lower_32_bits(mapping));
1766 le->length = cpu_to_le16(len);
1768 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1771 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1772 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1774 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1775 frag->size, PCI_DMA_TODEVICE);
1777 if (pci_dma_mapping_error(hw->pdev, mapping))
1778 goto mapping_unwind;
1780 upper = upper_32_bits(mapping);
1781 if (upper != sky2->tx_last_upper) {
1782 le = get_tx_le(sky2, &slot);
1783 le->addr = cpu_to_le32(upper);
1784 sky2->tx_last_upper = upper;
1785 le->opcode = OP_ADDR64 | HW_OWNER;
1788 re = sky2->tx_ring + slot;
1789 re->flags = TX_MAP_PAGE;
1790 pci_unmap_addr_set(re, mapaddr, mapping);
1791 pci_unmap_len_set(re, maplen, frag->size);
1793 le = get_tx_le(sky2, &slot);
1794 le->addr = cpu_to_le32(lower_32_bits(mapping));
1795 le->length = cpu_to_le16(frag->size);
1797 le->opcode = OP_BUFFER | HW_OWNER;
1803 sky2->tx_prod = slot;
1805 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1806 netif_stop_queue(dev);
1808 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1810 return NETDEV_TX_OK;
1813 for (i = sky2->tx_prod; i != slot; i = RING_NEXT(i, sky2->tx_ring_size)) {
1814 re = sky2->tx_ring + i;
1816 sky2_tx_unmap(hw->pdev, re);
1820 if (net_ratelimit())
1821 dev_warn(&hw->pdev->dev, "%s: tx mapping error\n", dev->name);
1823 return NETDEV_TX_OK;
1827 * Free ring elements from starting at tx_cons until "done"
1830 * 1. The hardware will tell us about partial completion of multi-part
1831 * buffers so make sure not to free skb to early.
1832 * 2. This may run in parallel start_xmit because the it only
1833 * looks at the tail of the queue of FIFO (tx_cons), not
1834 * the head (tx_prod)
1836 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1838 struct net_device *dev = sky2->netdev;
1841 BUG_ON(done >= sky2->tx_ring_size);
1843 for (idx = sky2->tx_cons; idx != done;
1844 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
1845 struct tx_ring_info *re = sky2->tx_ring + idx;
1846 struct sk_buff *skb = re->skb;
1848 sky2_tx_unmap(sky2->hw->pdev, re);
1851 if (unlikely(netif_msg_tx_done(sky2)))
1852 printk(KERN_DEBUG "%s: tx done %u\n",
1855 dev->stats.tx_packets++;
1856 dev->stats.tx_bytes += skb->len;
1859 dev_kfree_skb_any(skb);
1861 sky2->tx_next = RING_NEXT(idx, sky2->tx_ring_size);
1865 sky2->tx_cons = idx;
1868 /* Wake unless it's detached, and called e.g. from sky2_down() */
1869 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4 && netif_device_present(dev))
1870 netif_wake_queue(dev);
1873 static void sky2_tx_reset(struct sky2_hw *hw, unsigned port)
1875 /* Disable Force Sync bit and Enable Alloc bit */
1876 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1877 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1879 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1880 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1881 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1883 /* Reset the PCI FIFO of the async Tx queue */
1884 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1885 BMU_RST_SET | BMU_FIFO_RST);
1887 /* Reset the Tx prefetch units */
1888 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1891 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1892 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1895 /* Network shutdown */
1896 static int sky2_down(struct net_device *dev)
1898 struct sky2_port *sky2 = netdev_priv(dev);
1899 struct sky2_hw *hw = sky2->hw;
1900 unsigned port = sky2->port;
1904 /* Never really got started! */
1908 if (netif_msg_ifdown(sky2))
1909 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1911 /* Force flow control off */
1912 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1914 /* Stop transmitter */
1915 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1916 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1918 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1919 RB_RST_SET | RB_DIS_OP_MD);
1921 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1922 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1923 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1925 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1927 /* Workaround shared GMAC reset */
1928 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 &&
1929 port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1930 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1932 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1934 /* Force any delayed status interrrupt and NAPI */
1935 sky2_write32(hw, STAT_LEV_TIMER_CNT, 0);
1936 sky2_write32(hw, STAT_TX_TIMER_CNT, 0);
1937 sky2_write32(hw, STAT_ISR_TIMER_CNT, 0);
1938 sky2_read8(hw, STAT_ISR_TIMER_CTRL);
1942 /* Disable port IRQ */
1943 imask = sky2_read32(hw, B0_IMSK);
1944 imask &= ~portirq_msk[port];
1945 sky2_write32(hw, B0_IMSK, imask);
1946 sky2_read32(hw, B0_IMSK);
1948 synchronize_irq(hw->pdev->irq);
1949 napi_synchronize(&hw->napi);
1951 spin_lock_bh(&sky2->phy_lock);
1952 sky2_phy_power_down(hw, port);
1953 spin_unlock_bh(&sky2->phy_lock);
1955 sky2_tx_reset(hw, port);
1957 /* Free any pending frames stuck in HW queue */
1958 sky2_tx_complete(sky2, sky2->tx_prod);
1960 sky2_rx_clean(sky2);
1962 sky2_free_buffers(sky2);
1967 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1969 if (hw->flags & SKY2_HW_FIBRE_PHY)
1972 if (!(hw->flags & SKY2_HW_GIGABIT)) {
1973 if (aux & PHY_M_PS_SPEED_100)
1979 switch (aux & PHY_M_PS_SPEED_MSK) {
1980 case PHY_M_PS_SPEED_1000:
1982 case PHY_M_PS_SPEED_100:
1989 static void sky2_link_up(struct sky2_port *sky2)
1991 struct sky2_hw *hw = sky2->hw;
1992 unsigned port = sky2->port;
1994 static const char *fc_name[] = {
2002 reg = gma_read16(hw, port, GM_GP_CTRL);
2003 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
2004 gma_write16(hw, port, GM_GP_CTRL, reg);
2006 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
2008 netif_carrier_on(sky2->netdev);
2010 mod_timer(&hw->watchdog_timer, jiffies + 1);
2012 /* Turn on link LED */
2013 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
2014 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
2016 if (netif_msg_link(sky2))
2017 printk(KERN_INFO PFX
2018 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
2019 sky2->netdev->name, sky2->speed,
2020 sky2->duplex == DUPLEX_FULL ? "full" : "half",
2021 fc_name[sky2->flow_status]);
2024 static void sky2_link_down(struct sky2_port *sky2)
2026 struct sky2_hw *hw = sky2->hw;
2027 unsigned port = sky2->port;
2030 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
2032 reg = gma_read16(hw, port, GM_GP_CTRL);
2033 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
2034 gma_write16(hw, port, GM_GP_CTRL, reg);
2036 netif_carrier_off(sky2->netdev);
2038 /* Turn off link LED */
2039 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
2041 if (netif_msg_link(sky2))
2042 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
2044 sky2_phy_init(hw, port);
2047 static enum flow_control sky2_flow(int rx, int tx)
2050 return tx ? FC_BOTH : FC_RX;
2052 return tx ? FC_TX : FC_NONE;
2055 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
2057 struct sky2_hw *hw = sky2->hw;
2058 unsigned port = sky2->port;
2061 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
2062 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
2063 if (lpa & PHY_M_AN_RF) {
2064 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
2068 if (!(aux & PHY_M_PS_SPDUP_RES)) {
2069 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
2070 sky2->netdev->name);
2074 sky2->speed = sky2_phy_speed(hw, aux);
2075 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2077 /* Since the pause result bits seem to in different positions on
2078 * different chips. look at registers.
2080 if (hw->flags & SKY2_HW_FIBRE_PHY) {
2081 /* Shift for bits in fiber PHY */
2082 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
2083 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
2085 if (advert & ADVERTISE_1000XPAUSE)
2086 advert |= ADVERTISE_PAUSE_CAP;
2087 if (advert & ADVERTISE_1000XPSE_ASYM)
2088 advert |= ADVERTISE_PAUSE_ASYM;
2089 if (lpa & LPA_1000XPAUSE)
2090 lpa |= LPA_PAUSE_CAP;
2091 if (lpa & LPA_1000XPAUSE_ASYM)
2092 lpa |= LPA_PAUSE_ASYM;
2095 sky2->flow_status = FC_NONE;
2096 if (advert & ADVERTISE_PAUSE_CAP) {
2097 if (lpa & LPA_PAUSE_CAP)
2098 sky2->flow_status = FC_BOTH;
2099 else if (advert & ADVERTISE_PAUSE_ASYM)
2100 sky2->flow_status = FC_RX;
2101 } else if (advert & ADVERTISE_PAUSE_ASYM) {
2102 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
2103 sky2->flow_status = FC_TX;
2106 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000 &&
2107 !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
2108 sky2->flow_status = FC_NONE;
2110 if (sky2->flow_status & FC_TX)
2111 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2113 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2118 /* Interrupt from PHY */
2119 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
2121 struct net_device *dev = hw->dev[port];
2122 struct sky2_port *sky2 = netdev_priv(dev);
2123 u16 istatus, phystat;
2125 if (!netif_running(dev))
2128 spin_lock(&sky2->phy_lock);
2129 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2130 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2132 if (netif_msg_intr(sky2))
2133 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
2134 sky2->netdev->name, istatus, phystat);
2136 if (istatus & PHY_M_IS_AN_COMPL) {
2137 if (sky2_autoneg_done(sky2, phystat) == 0)
2142 if (istatus & PHY_M_IS_LSP_CHANGE)
2143 sky2->speed = sky2_phy_speed(hw, phystat);
2145 if (istatus & PHY_M_IS_DUP_CHANGE)
2147 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2149 if (istatus & PHY_M_IS_LST_CHANGE) {
2150 if (phystat & PHY_M_PS_LINK_UP)
2153 sky2_link_down(sky2);
2156 spin_unlock(&sky2->phy_lock);
2159 /* Special quick link interrupt (Yukon-2 Optima only) */
2160 static void sky2_qlink_intr(struct sky2_hw *hw)
2162 struct sky2_port *sky2 = netdev_priv(hw->dev[0]);
2167 imask = sky2_read32(hw, B0_IMSK);
2168 imask &= ~Y2_IS_PHY_QLNK;
2169 sky2_write32(hw, B0_IMSK, imask);
2171 /* reset PHY Link Detect */
2172 phy = sky2_pci_read16(hw, PSM_CONFIG_REG4);
2173 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2174 sky2_pci_write16(hw, PSM_CONFIG_REG4, phy | 1);
2175 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2180 /* Transmit timeout is only called if we are running, carrier is up
2181 * and tx queue is full (stopped).
2183 static void sky2_tx_timeout(struct net_device *dev)
2185 struct sky2_port *sky2 = netdev_priv(dev);
2186 struct sky2_hw *hw = sky2->hw;
2188 if (netif_msg_timer(sky2))
2189 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
2191 printk(KERN_DEBUG PFX "%s: transmit ring %u .. %u report=%u done=%u\n",
2192 dev->name, sky2->tx_cons, sky2->tx_prod,
2193 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
2194 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
2196 /* can't restart safely under softirq */
2197 schedule_work(&hw->restart_work);
2200 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
2202 struct sky2_port *sky2 = netdev_priv(dev);
2203 struct sky2_hw *hw = sky2->hw;
2204 unsigned port = sky2->port;
2209 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2212 if (new_mtu > ETH_DATA_LEN &&
2213 (hw->chip_id == CHIP_ID_YUKON_FE ||
2214 hw->chip_id == CHIP_ID_YUKON_FE_P))
2217 if (!netif_running(dev)) {
2222 imask = sky2_read32(hw, B0_IMSK);
2223 sky2_write32(hw, B0_IMSK, 0);
2225 dev->trans_start = jiffies; /* prevent tx timeout */
2226 netif_stop_queue(dev);
2227 napi_disable(&hw->napi);
2229 synchronize_irq(hw->pdev->irq);
2231 if (!(hw->flags & SKY2_HW_RAM_BUFFER))
2232 sky2_set_tx_stfwd(hw, port);
2234 ctl = gma_read16(hw, port, GM_GP_CTRL);
2235 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2237 sky2_rx_clean(sky2);
2241 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
2242 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
2244 if (dev->mtu > ETH_DATA_LEN)
2245 mode |= GM_SMOD_JUMBO_ENA;
2247 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2249 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2251 err = sky2_rx_start(sky2);
2252 sky2_write32(hw, B0_IMSK, imask);
2254 sky2_read32(hw, B0_Y2_SP_LISR);
2255 napi_enable(&hw->napi);
2260 gma_write16(hw, port, GM_GP_CTRL, ctl);
2262 netif_wake_queue(dev);
2268 /* For small just reuse existing skb for next receive */
2269 static struct sk_buff *receive_copy(struct sky2_port *sky2,
2270 const struct rx_ring_info *re,
2273 struct sk_buff *skb;
2275 skb = netdev_alloc_skb_ip_align(sky2->netdev, length);
2277 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2278 length, PCI_DMA_FROMDEVICE);
2279 skb_copy_from_linear_data(re->skb, skb->data, length);
2280 skb->ip_summed = re->skb->ip_summed;
2281 skb->csum = re->skb->csum;
2282 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2283 length, PCI_DMA_FROMDEVICE);
2284 re->skb->ip_summed = CHECKSUM_NONE;
2285 skb_put(skb, length);
2290 /* Adjust length of skb with fragments to match received data */
2291 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2292 unsigned int length)
2297 /* put header into skb */
2298 size = min(length, hdr_space);
2303 num_frags = skb_shinfo(skb)->nr_frags;
2304 for (i = 0; i < num_frags; i++) {
2305 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2308 /* don't need this page */
2309 __free_page(frag->page);
2310 --skb_shinfo(skb)->nr_frags;
2312 size = min(length, (unsigned) PAGE_SIZE);
2315 skb->data_len += size;
2316 skb->truesize += size;
2323 /* Normal packet - take skb from ring element and put in a new one */
2324 static struct sk_buff *receive_new(struct sky2_port *sky2,
2325 struct rx_ring_info *re,
2326 unsigned int length)
2328 struct sk_buff *skb;
2329 struct rx_ring_info nre;
2330 unsigned hdr_space = sky2->rx_data_size;
2332 nre.skb = sky2_rx_alloc(sky2);
2333 if (unlikely(!nre.skb))
2336 if (sky2_rx_map_skb(sky2->hw->pdev, &nre, hdr_space))
2340 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2341 prefetch(skb->data);
2344 if (skb_shinfo(skb)->nr_frags)
2345 skb_put_frags(skb, hdr_space, length);
2347 skb_put(skb, length);
2351 dev_kfree_skb(nre.skb);
2357 * Receive one packet.
2358 * For larger packets, get new buffer.
2360 static struct sk_buff *sky2_receive(struct net_device *dev,
2361 u16 length, u32 status)
2363 struct sky2_port *sky2 = netdev_priv(dev);
2364 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2365 struct sk_buff *skb = NULL;
2366 u16 count = (status & GMR_FS_LEN) >> 16;
2368 #ifdef SKY2_VLAN_TAG_USED
2369 /* Account for vlan tag */
2370 if (sky2->vlgrp && (status & GMR_FS_VLAN))
2374 if (unlikely(netif_msg_rx_status(sky2)))
2375 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
2376 dev->name, sky2->rx_next, status, length);
2378 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2379 prefetch(sky2->rx_ring + sky2->rx_next);
2381 /* This chip has hardware problems that generates bogus status.
2382 * So do only marginal checking and expect higher level protocols
2383 * to handle crap frames.
2385 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2386 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2390 if (status & GMR_FS_ANY_ERR)
2393 if (!(status & GMR_FS_RX_OK))
2396 /* if length reported by DMA does not match PHY, packet was truncated */
2397 if (length != count)
2401 if (length < copybreak)
2402 skb = receive_copy(sky2, re, length);
2404 skb = receive_new(sky2, re, length);
2406 dev->stats.rx_dropped += (skb == NULL);
2409 sky2_rx_submit(sky2, re);
2414 /* Truncation of overlength packets
2415 causes PHY length to not match MAC length */
2416 ++dev->stats.rx_length_errors;
2417 if (netif_msg_rx_err(sky2) && net_ratelimit())
2418 pr_info(PFX "%s: rx length error: status %#x length %d\n",
2419 dev->name, status, length);
2423 ++dev->stats.rx_errors;
2424 if (status & GMR_FS_RX_FF_OV) {
2425 dev->stats.rx_over_errors++;
2429 if (netif_msg_rx_err(sky2) && net_ratelimit())
2430 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
2431 dev->name, status, length);
2433 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
2434 dev->stats.rx_length_errors++;
2435 if (status & GMR_FS_FRAGMENT)
2436 dev->stats.rx_frame_errors++;
2437 if (status & GMR_FS_CRC_ERR)
2438 dev->stats.rx_crc_errors++;
2443 /* Transmit complete */
2444 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2446 struct sky2_port *sky2 = netdev_priv(dev);
2448 if (netif_running(dev))
2449 sky2_tx_complete(sky2, last);
2452 static inline void sky2_skb_rx(const struct sky2_port *sky2,
2453 u32 status, struct sk_buff *skb)
2455 #ifdef SKY2_VLAN_TAG_USED
2456 u16 vlan_tag = be16_to_cpu(sky2->rx_tag);
2457 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
2458 if (skb->ip_summed == CHECKSUM_NONE)
2459 vlan_hwaccel_receive_skb(skb, sky2->vlgrp, vlan_tag);
2461 vlan_gro_receive(&sky2->hw->napi, sky2->vlgrp,
2466 if (skb->ip_summed == CHECKSUM_NONE)
2467 netif_receive_skb(skb);
2469 napi_gro_receive(&sky2->hw->napi, skb);
2472 static inline void sky2_rx_done(struct sky2_hw *hw, unsigned port,
2473 unsigned packets, unsigned bytes)
2476 struct net_device *dev = hw->dev[port];
2478 dev->stats.rx_packets += packets;
2479 dev->stats.rx_bytes += bytes;
2480 dev->last_rx = jiffies;
2481 sky2_rx_update(netdev_priv(dev), rxqaddr[port]);
2485 static void sky2_rx_checksum(struct sky2_port *sky2, u32 status)
2487 /* If this happens then driver assuming wrong format for chip type */
2488 BUG_ON(sky2->hw->flags & SKY2_HW_NEW_LE);
2490 /* Both checksum counters are programmed to start at
2491 * the same offset, so unless there is a problem they
2492 * should match. This failure is an early indication that
2493 * hardware receive checksumming won't work.
2495 if (likely((u16)(status >> 16) == (u16)status)) {
2496 struct sk_buff *skb = sky2->rx_ring[sky2->rx_next].skb;
2497 skb->ip_summed = CHECKSUM_COMPLETE;
2498 skb->csum = le16_to_cpu(status);
2500 dev_notice(&sky2->hw->pdev->dev,
2501 "%s: receive checksum problem (status = %#x)\n",
2502 sky2->netdev->name, status);
2504 /* Disable checksum offload */
2505 sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM;
2506 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
2511 /* Process status response ring */
2512 static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
2515 unsigned int total_bytes[2] = { 0 };
2516 unsigned int total_packets[2] = { 0 };
2520 struct sky2_port *sky2;
2521 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2523 struct net_device *dev;
2524 struct sk_buff *skb;
2527 u8 opcode = le->opcode;
2529 if (!(opcode & HW_OWNER))
2532 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
2534 port = le->css & CSS_LINK_BIT;
2535 dev = hw->dev[port];
2536 sky2 = netdev_priv(dev);
2537 length = le16_to_cpu(le->length);
2538 status = le32_to_cpu(le->status);
2541 switch (opcode & ~HW_OWNER) {
2543 total_packets[port]++;
2544 total_bytes[port] += length;
2546 skb = sky2_receive(dev, length, status);
2550 /* This chip reports checksum status differently */
2551 if (hw->flags & SKY2_HW_NEW_LE) {
2552 if ((sky2->flags & SKY2_FLAG_RX_CHECKSUM) &&
2553 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2554 (le->css & CSS_TCPUDPCSOK))
2555 skb->ip_summed = CHECKSUM_UNNECESSARY;
2557 skb->ip_summed = CHECKSUM_NONE;
2560 skb->protocol = eth_type_trans(skb, dev);
2562 sky2_skb_rx(sky2, status, skb);
2564 /* Stop after net poll weight */
2565 if (++work_done >= to_do)
2569 #ifdef SKY2_VLAN_TAG_USED
2571 sky2->rx_tag = length;
2575 sky2->rx_tag = length;
2579 if (likely(sky2->flags & SKY2_FLAG_RX_CHECKSUM))
2580 sky2_rx_checksum(sky2, status);
2584 /* TX index reports status for both ports */
2585 sky2_tx_done(hw->dev[0], status & 0xfff);
2587 sky2_tx_done(hw->dev[1],
2588 ((status >> 24) & 0xff)
2589 | (u16)(length & 0xf) << 8);
2593 if (net_ratelimit())
2594 printk(KERN_WARNING PFX
2595 "unknown status opcode 0x%x\n", opcode);
2597 } while (hw->st_idx != idx);
2599 /* Fully processed status ring so clear irq */
2600 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2603 sky2_rx_done(hw, 0, total_packets[0], total_bytes[0]);
2604 sky2_rx_done(hw, 1, total_packets[1], total_bytes[1]);
2609 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2611 struct net_device *dev = hw->dev[port];
2613 if (net_ratelimit())
2614 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
2617 if (status & Y2_IS_PAR_RD1) {
2618 if (net_ratelimit())
2619 printk(KERN_ERR PFX "%s: ram data read parity error\n",
2622 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2625 if (status & Y2_IS_PAR_WR1) {
2626 if (net_ratelimit())
2627 printk(KERN_ERR PFX "%s: ram data write parity error\n",
2630 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2633 if (status & Y2_IS_PAR_MAC1) {
2634 if (net_ratelimit())
2635 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
2636 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2639 if (status & Y2_IS_PAR_RX1) {
2640 if (net_ratelimit())
2641 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
2642 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2645 if (status & Y2_IS_TCP_TXA1) {
2646 if (net_ratelimit())
2647 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
2649 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2653 static void sky2_hw_intr(struct sky2_hw *hw)
2655 struct pci_dev *pdev = hw->pdev;
2656 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2657 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2661 if (status & Y2_IS_TIST_OV)
2662 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2664 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2667 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2668 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2669 if (net_ratelimit())
2670 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
2673 sky2_pci_write16(hw, PCI_STATUS,
2674 pci_err | PCI_STATUS_ERROR_BITS);
2675 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2678 if (status & Y2_IS_PCI_EXP) {
2679 /* PCI-Express uncorrectable Error occurred */
2682 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2683 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2684 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2686 if (net_ratelimit())
2687 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
2689 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2690 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2693 if (status & Y2_HWE_L1_MASK)
2694 sky2_hw_error(hw, 0, status);
2696 if (status & Y2_HWE_L1_MASK)
2697 sky2_hw_error(hw, 1, status);
2700 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2702 struct net_device *dev = hw->dev[port];
2703 struct sky2_port *sky2 = netdev_priv(dev);
2704 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2706 if (netif_msg_intr(sky2))
2707 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2710 if (status & GM_IS_RX_CO_OV)
2711 gma_read16(hw, port, GM_RX_IRQ_SRC);
2713 if (status & GM_IS_TX_CO_OV)
2714 gma_read16(hw, port, GM_TX_IRQ_SRC);
2716 if (status & GM_IS_RX_FF_OR) {
2717 ++dev->stats.rx_fifo_errors;
2718 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2721 if (status & GM_IS_TX_FF_UR) {
2722 ++dev->stats.tx_fifo_errors;
2723 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2727 /* This should never happen it is a bug. */
2728 static void sky2_le_error(struct sky2_hw *hw, unsigned port, u16 q)
2730 struct net_device *dev = hw->dev[port];
2731 u16 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2733 dev_err(&hw->pdev->dev, PFX
2734 "%s: descriptor error q=%#x get=%u put=%u\n",
2735 dev->name, (unsigned) q, (unsigned) idx,
2736 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2738 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2741 static int sky2_rx_hung(struct net_device *dev)
2743 struct sky2_port *sky2 = netdev_priv(dev);
2744 struct sky2_hw *hw = sky2->hw;
2745 unsigned port = sky2->port;
2746 unsigned rxq = rxqaddr[port];
2747 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2748 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2749 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2750 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2752 /* If idle and MAC or PCI is stuck */
2753 if (sky2->check.last == dev->last_rx &&
2754 ((mac_rp == sky2->check.mac_rp &&
2755 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2756 /* Check if the PCI RX hang */
2757 (fifo_rp == sky2->check.fifo_rp &&
2758 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2759 printk(KERN_DEBUG PFX "%s: hung mac %d:%d fifo %d (%d:%d)\n",
2760 dev->name, mac_lev, mac_rp, fifo_lev, fifo_rp,
2761 sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2764 sky2->check.last = dev->last_rx;
2765 sky2->check.mac_rp = mac_rp;
2766 sky2->check.mac_lev = mac_lev;
2767 sky2->check.fifo_rp = fifo_rp;
2768 sky2->check.fifo_lev = fifo_lev;
2773 static void sky2_watchdog(unsigned long arg)
2775 struct sky2_hw *hw = (struct sky2_hw *) arg;
2777 /* Check for lost IRQ once a second */
2778 if (sky2_read32(hw, B0_ISRC)) {
2779 napi_schedule(&hw->napi);
2783 for (i = 0; i < hw->ports; i++) {
2784 struct net_device *dev = hw->dev[i];
2785 if (!netif_running(dev))
2789 /* For chips with Rx FIFO, check if stuck */
2790 if ((hw->flags & SKY2_HW_RAM_BUFFER) &&
2791 sky2_rx_hung(dev)) {
2792 pr_info(PFX "%s: receiver hang detected\n",
2794 schedule_work(&hw->restart_work);
2803 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
2806 /* Hardware/software error handling */
2807 static void sky2_err_intr(struct sky2_hw *hw, u32 status)
2809 if (net_ratelimit())
2810 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
2812 if (status & Y2_IS_HW_ERR)
2815 if (status & Y2_IS_IRQ_MAC1)
2816 sky2_mac_intr(hw, 0);
2818 if (status & Y2_IS_IRQ_MAC2)
2819 sky2_mac_intr(hw, 1);
2821 if (status & Y2_IS_CHK_RX1)
2822 sky2_le_error(hw, 0, Q_R1);
2824 if (status & Y2_IS_CHK_RX2)
2825 sky2_le_error(hw, 1, Q_R2);
2827 if (status & Y2_IS_CHK_TXA1)
2828 sky2_le_error(hw, 0, Q_XA1);
2830 if (status & Y2_IS_CHK_TXA2)
2831 sky2_le_error(hw, 1, Q_XA2);
2834 static int sky2_poll(struct napi_struct *napi, int work_limit)
2836 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
2837 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2841 if (unlikely(status & Y2_IS_ERROR))
2842 sky2_err_intr(hw, status);
2844 if (status & Y2_IS_IRQ_PHY1)
2845 sky2_phy_intr(hw, 0);
2847 if (status & Y2_IS_IRQ_PHY2)
2848 sky2_phy_intr(hw, 1);
2850 if (status & Y2_IS_PHY_QLNK)
2851 sky2_qlink_intr(hw);
2853 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
2854 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
2856 if (work_done >= work_limit)
2860 napi_complete(napi);
2861 sky2_read32(hw, B0_Y2_SP_LISR);
2867 static irqreturn_t sky2_intr(int irq, void *dev_id)
2869 struct sky2_hw *hw = dev_id;
2872 /* Reading this mask interrupts as side effect */
2873 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2874 if (status == 0 || status == ~0)
2877 prefetch(&hw->st_le[hw->st_idx]);
2879 napi_schedule(&hw->napi);
2884 #ifdef CONFIG_NET_POLL_CONTROLLER
2885 static void sky2_netpoll(struct net_device *dev)
2887 struct sky2_port *sky2 = netdev_priv(dev);
2889 napi_schedule(&sky2->hw->napi);
2893 /* Chip internal frequency for clock calculations */
2894 static u32 sky2_mhz(const struct sky2_hw *hw)
2896 switch (hw->chip_id) {
2897 case CHIP_ID_YUKON_EC:
2898 case CHIP_ID_YUKON_EC_U:
2899 case CHIP_ID_YUKON_EX:
2900 case CHIP_ID_YUKON_SUPR:
2901 case CHIP_ID_YUKON_UL_2:
2902 case CHIP_ID_YUKON_OPT:
2905 case CHIP_ID_YUKON_FE:
2908 case CHIP_ID_YUKON_FE_P:
2911 case CHIP_ID_YUKON_XL:
2919 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2921 return sky2_mhz(hw) * us;
2924 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2926 return clk / sky2_mhz(hw);
2930 static int __devinit sky2_init(struct sky2_hw *hw)
2934 /* Enable all clocks and check for bad PCI access */
2935 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
2937 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2939 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2940 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2942 switch(hw->chip_id) {
2943 case CHIP_ID_YUKON_XL:
2944 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
2947 case CHIP_ID_YUKON_EC_U:
2948 hw->flags = SKY2_HW_GIGABIT
2950 | SKY2_HW_ADV_POWER_CTL;
2953 case CHIP_ID_YUKON_EX:
2954 hw->flags = SKY2_HW_GIGABIT
2957 | SKY2_HW_ADV_POWER_CTL;
2959 /* New transmit checksum */
2960 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
2961 hw->flags |= SKY2_HW_AUTO_TX_SUM;
2964 case CHIP_ID_YUKON_EC:
2965 /* This rev is really old, and requires untested workarounds */
2966 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
2967 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
2970 hw->flags = SKY2_HW_GIGABIT;
2973 case CHIP_ID_YUKON_FE:
2976 case CHIP_ID_YUKON_FE_P:
2977 hw->flags = SKY2_HW_NEWER_PHY
2979 | SKY2_HW_AUTO_TX_SUM
2980 | SKY2_HW_ADV_POWER_CTL;
2983 case CHIP_ID_YUKON_SUPR:
2984 hw->flags = SKY2_HW_GIGABIT
2987 | SKY2_HW_AUTO_TX_SUM
2988 | SKY2_HW_ADV_POWER_CTL;
2991 case CHIP_ID_YUKON_UL_2:
2992 hw->flags = SKY2_HW_GIGABIT
2993 | SKY2_HW_ADV_POWER_CTL;
2996 case CHIP_ID_YUKON_OPT:
2997 hw->flags = SKY2_HW_GIGABIT
2999 | SKY2_HW_ADV_POWER_CTL;
3003 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
3008 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
3009 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
3010 hw->flags |= SKY2_HW_FIBRE_PHY;
3013 t8 = sky2_read8(hw, B2_Y2_HW_RES);
3014 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
3015 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
3019 if (sky2_read8(hw, B2_E_0))
3020 hw->flags |= SKY2_HW_RAM_BUFFER;
3025 static void sky2_reset(struct sky2_hw *hw)
3027 struct pci_dev *pdev = hw->pdev;
3030 u32 hwe_mask = Y2_HWE_ALL_MASK;
3033 if (hw->chip_id == CHIP_ID_YUKON_EX
3034 || hw->chip_id == CHIP_ID_YUKON_SUPR) {
3035 sky2_write32(hw, CPU_WDOG, 0);
3036 status = sky2_read16(hw, HCU_CCSR);
3037 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
3038 HCU_CCSR_UC_STATE_MSK);
3040 * CPU clock divider shouldn't be used because
3041 * - ASF firmware may malfunction
3042 * - Yukon-Supreme: Parallel FLASH doesn't support divided clocks
3044 status &= ~HCU_CCSR_CPU_CLK_DIVIDE_MSK;
3045 sky2_write16(hw, HCU_CCSR, status);
3046 sky2_write32(hw, CPU_WDOG, 0);
3048 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
3049 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
3052 sky2_write8(hw, B0_CTST, CS_RST_SET);
3053 sky2_write8(hw, B0_CTST, CS_RST_CLR);
3055 /* allow writes to PCI config */
3056 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3058 /* clear PCI errors, if any */
3059 status = sky2_pci_read16(hw, PCI_STATUS);
3060 status |= PCI_STATUS_ERROR_BITS;
3061 sky2_pci_write16(hw, PCI_STATUS, status);
3063 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
3065 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3067 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
3070 /* If error bit is stuck on ignore it */
3071 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
3072 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
3074 hwe_mask |= Y2_IS_PCI_EXP;
3078 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3080 for (i = 0; i < hw->ports; i++) {
3081 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
3082 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
3084 if (hw->chip_id == CHIP_ID_YUKON_EX ||
3085 hw->chip_id == CHIP_ID_YUKON_SUPR)
3086 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
3087 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
3092 if (hw->chip_id == CHIP_ID_YUKON_SUPR && hw->chip_rev > CHIP_REV_YU_SU_B0) {
3093 /* enable MACSec clock gating */
3094 sky2_pci_write32(hw, PCI_DEV_REG3, P_CLK_MACSEC_DIS);
3097 if (hw->chip_id == CHIP_ID_YUKON_OPT) {
3101 if (hw->chip_rev == 0) {
3102 /* disable PCI-E PHY power down (set PHY reg 0x80, bit 7 */
3103 sky2_write32(hw, Y2_PEX_PHY_DATA, (0x80UL << 16) | (1 << 7));
3105 /* set PHY Link Detect Timer to 1.1 second (11x 100ms) */
3108 /* set PHY Link Detect Timer to 0.4 second (4x 100ms) */
3112 reg <<= PSM_CONFIG_REG4_TIMER_PHY_LINK_DETECT_BASE;
3114 /* reset PHY Link Detect */
3115 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3116 sky2_pci_write16(hw, PSM_CONFIG_REG4,
3117 reg | PSM_CONFIG_REG4_RST_PHY_LINK_DETECT);
3118 sky2_pci_write16(hw, PSM_CONFIG_REG4, reg);
3121 /* enable PHY Quick Link */
3122 msk = sky2_read32(hw, B0_IMSK);
3123 msk |= Y2_IS_PHY_QLNK;
3124 sky2_write32(hw, B0_IMSK, msk);
3126 /* check if PSMv2 was running before */
3127 reg = sky2_pci_read16(hw, PSM_CONFIG_REG3);
3128 if (reg & PCI_EXP_LNKCTL_ASPMC) {
3129 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3130 /* restore the PCIe Link Control register */
3131 sky2_pci_write16(hw, cap + PCI_EXP_LNKCTL, reg);
3133 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3135 /* re-enable PEX PM in PEX PHY debug reg. 8 (clear bit 12) */
3136 sky2_write32(hw, Y2_PEX_PHY_DATA, PEX_DB_ACCESS | (0x08UL << 16));
3139 /* Clear I2C IRQ noise */
3140 sky2_write32(hw, B2_I2C_IRQ, 1);
3142 /* turn off hardware timer (unused) */
3143 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
3144 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
3146 /* Turn off descriptor polling */
3147 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
3149 /* Turn off receive timestamp */
3150 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
3151 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
3153 /* enable the Tx Arbiters */
3154 for (i = 0; i < hw->ports; i++)
3155 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3157 /* Initialize ram interface */
3158 for (i = 0; i < hw->ports; i++) {
3159 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
3161 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
3162 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
3163 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
3164 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
3165 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
3166 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
3167 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
3168 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
3169 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
3170 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
3171 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
3172 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
3175 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
3177 for (i = 0; i < hw->ports; i++)
3178 sky2_gmac_reset(hw, i);
3180 memset(hw->st_le, 0, STATUS_LE_BYTES);
3183 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
3184 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
3186 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
3187 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
3189 /* Set the list last index */
3190 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
3192 sky2_write16(hw, STAT_TX_IDX_TH, 10);
3193 sky2_write8(hw, STAT_FIFO_WM, 16);
3195 /* set Status-FIFO ISR watermark */
3196 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
3197 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
3199 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
3201 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
3202 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
3203 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
3205 /* enable status unit */
3206 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
3208 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3209 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3210 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3213 /* Take device down (offline).
3214 * Equivalent to doing dev_stop() but this does not
3215 * inform upper layers of the transistion.
3217 static void sky2_detach(struct net_device *dev)
3219 if (netif_running(dev)) {
3221 netif_device_detach(dev); /* stop txq */
3222 netif_tx_unlock(dev);
3227 /* Bring device back after doing sky2_detach */
3228 static int sky2_reattach(struct net_device *dev)
3232 if (netif_running(dev)) {
3235 printk(KERN_INFO PFX "%s: could not restart %d\n",
3239 netif_device_attach(dev);
3240 sky2_set_multicast(dev);
3247 static void sky2_restart(struct work_struct *work)
3249 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
3253 for (i = 0; i < hw->ports; i++)
3254 sky2_detach(hw->dev[i]);
3256 napi_disable(&hw->napi);
3257 sky2_write32(hw, B0_IMSK, 0);
3259 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3260 napi_enable(&hw->napi);
3262 for (i = 0; i < hw->ports; i++)
3263 sky2_reattach(hw->dev[i]);
3268 static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
3270 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
3273 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3275 const struct sky2_port *sky2 = netdev_priv(dev);
3277 wol->supported = sky2_wol_supported(sky2->hw);
3278 wol->wolopts = sky2->wol;
3281 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3283 struct sky2_port *sky2 = netdev_priv(dev);
3284 struct sky2_hw *hw = sky2->hw;
3286 if ((wol->wolopts & ~sky2_wol_supported(sky2->hw)) ||
3287 !device_can_wakeup(&hw->pdev->dev))
3290 sky2->wol = wol->wolopts;
3294 static u32 sky2_supported_modes(const struct sky2_hw *hw)
3296 if (sky2_is_copper(hw)) {
3297 u32 modes = SUPPORTED_10baseT_Half
3298 | SUPPORTED_10baseT_Full
3299 | SUPPORTED_100baseT_Half
3300 | SUPPORTED_100baseT_Full
3301 | SUPPORTED_Autoneg | SUPPORTED_TP;
3303 if (hw->flags & SKY2_HW_GIGABIT)
3304 modes |= SUPPORTED_1000baseT_Half
3305 | SUPPORTED_1000baseT_Full;
3308 return SUPPORTED_1000baseT_Half
3309 | SUPPORTED_1000baseT_Full
3314 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3316 struct sky2_port *sky2 = netdev_priv(dev);
3317 struct sky2_hw *hw = sky2->hw;
3319 ecmd->transceiver = XCVR_INTERNAL;
3320 ecmd->supported = sky2_supported_modes(hw);
3321 ecmd->phy_address = PHY_ADDR_MARV;
3322 if (sky2_is_copper(hw)) {
3323 ecmd->port = PORT_TP;
3324 ecmd->speed = sky2->speed;
3326 ecmd->speed = SPEED_1000;
3327 ecmd->port = PORT_FIBRE;
3330 ecmd->advertising = sky2->advertising;
3331 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_SPEED)
3332 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3333 ecmd->duplex = sky2->duplex;
3337 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3339 struct sky2_port *sky2 = netdev_priv(dev);
3340 const struct sky2_hw *hw = sky2->hw;
3341 u32 supported = sky2_supported_modes(hw);
3343 if (ecmd->autoneg == AUTONEG_ENABLE) {
3344 sky2->flags |= SKY2_FLAG_AUTO_SPEED;
3345 ecmd->advertising = supported;
3351 switch (ecmd->speed) {
3353 if (ecmd->duplex == DUPLEX_FULL)
3354 setting = SUPPORTED_1000baseT_Full;
3355 else if (ecmd->duplex == DUPLEX_HALF)
3356 setting = SUPPORTED_1000baseT_Half;
3361 if (ecmd->duplex == DUPLEX_FULL)
3362 setting = SUPPORTED_100baseT_Full;
3363 else if (ecmd->duplex == DUPLEX_HALF)
3364 setting = SUPPORTED_100baseT_Half;
3370 if (ecmd->duplex == DUPLEX_FULL)
3371 setting = SUPPORTED_10baseT_Full;
3372 else if (ecmd->duplex == DUPLEX_HALF)
3373 setting = SUPPORTED_10baseT_Half;
3381 if ((setting & supported) == 0)
3384 sky2->speed = ecmd->speed;
3385 sky2->duplex = ecmd->duplex;
3386 sky2->flags &= ~SKY2_FLAG_AUTO_SPEED;
3389 sky2->advertising = ecmd->advertising;
3391 if (netif_running(dev)) {
3392 sky2_phy_reinit(sky2);
3393 sky2_set_multicast(dev);
3399 static void sky2_get_drvinfo(struct net_device *dev,
3400 struct ethtool_drvinfo *info)
3402 struct sky2_port *sky2 = netdev_priv(dev);
3404 strcpy(info->driver, DRV_NAME);
3405 strcpy(info->version, DRV_VERSION);
3406 strcpy(info->fw_version, "N/A");
3407 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
3410 static const struct sky2_stat {
3411 char name[ETH_GSTRING_LEN];
3414 { "tx_bytes", GM_TXO_OK_HI },
3415 { "rx_bytes", GM_RXO_OK_HI },
3416 { "tx_broadcast", GM_TXF_BC_OK },
3417 { "rx_broadcast", GM_RXF_BC_OK },
3418 { "tx_multicast", GM_TXF_MC_OK },
3419 { "rx_multicast", GM_RXF_MC_OK },
3420 { "tx_unicast", GM_TXF_UC_OK },
3421 { "rx_unicast", GM_RXF_UC_OK },
3422 { "tx_mac_pause", GM_TXF_MPAUSE },
3423 { "rx_mac_pause", GM_RXF_MPAUSE },
3424 { "collisions", GM_TXF_COL },
3425 { "late_collision",GM_TXF_LAT_COL },
3426 { "aborted", GM_TXF_ABO_COL },
3427 { "single_collisions", GM_TXF_SNG_COL },
3428 { "multi_collisions", GM_TXF_MUL_COL },
3430 { "rx_short", GM_RXF_SHT },
3431 { "rx_runt", GM_RXE_FRAG },
3432 { "rx_64_byte_packets", GM_RXF_64B },
3433 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3434 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3435 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3436 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3437 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3438 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3439 { "rx_too_long", GM_RXF_LNG_ERR },
3440 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3441 { "rx_jabber", GM_RXF_JAB_PKT },
3442 { "rx_fcs_error", GM_RXF_FCS_ERR },
3444 { "tx_64_byte_packets", GM_TXF_64B },
3445 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3446 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3447 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3448 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3449 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3450 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3451 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3454 static u32 sky2_get_rx_csum(struct net_device *dev)
3456 struct sky2_port *sky2 = netdev_priv(dev);
3458 return !!(sky2->flags & SKY2_FLAG_RX_CHECKSUM);
3461 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
3463 struct sky2_port *sky2 = netdev_priv(dev);
3466 sky2->flags |= SKY2_FLAG_RX_CHECKSUM;
3468 sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM;
3470 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
3471 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
3476 static u32 sky2_get_msglevel(struct net_device *netdev)
3478 struct sky2_port *sky2 = netdev_priv(netdev);
3479 return sky2->msg_enable;
3482 static int sky2_nway_reset(struct net_device *dev)
3484 struct sky2_port *sky2 = netdev_priv(dev);
3486 if (!netif_running(dev) || !(sky2->flags & SKY2_FLAG_AUTO_SPEED))
3489 sky2_phy_reinit(sky2);
3490 sky2_set_multicast(dev);
3495 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3497 struct sky2_hw *hw = sky2->hw;
3498 unsigned port = sky2->port;
3501 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
3502 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
3503 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
3504 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
3506 for (i = 2; i < count; i++)
3507 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
3510 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3512 struct sky2_port *sky2 = netdev_priv(netdev);
3513 sky2->msg_enable = value;
3516 static int sky2_get_sset_count(struct net_device *dev, int sset)
3520 return ARRAY_SIZE(sky2_stats);
3526 static void sky2_get_ethtool_stats(struct net_device *dev,
3527 struct ethtool_stats *stats, u64 * data)
3529 struct sky2_port *sky2 = netdev_priv(dev);
3531 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3534 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3538 switch (stringset) {
3540 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3541 memcpy(data + i * ETH_GSTRING_LEN,
3542 sky2_stats[i].name, ETH_GSTRING_LEN);
3547 static int sky2_set_mac_address(struct net_device *dev, void *p)
3549 struct sky2_port *sky2 = netdev_priv(dev);
3550 struct sky2_hw *hw = sky2->hw;
3551 unsigned port = sky2->port;
3552 const struct sockaddr *addr = p;
3554 if (!is_valid_ether_addr(addr->sa_data))
3555 return -EADDRNOTAVAIL;
3557 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3558 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3559 dev->dev_addr, ETH_ALEN);
3560 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3561 dev->dev_addr, ETH_ALEN);
3563 /* virtual address for data */
3564 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3566 /* physical address: used for pause frames */
3567 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3572 static void inline sky2_add_filter(u8 filter[8], const u8 *addr)
3576 bit = ether_crc(ETH_ALEN, addr) & 63;
3577 filter[bit >> 3] |= 1 << (bit & 7);
3580 static void sky2_set_multicast(struct net_device *dev)
3582 struct sky2_port *sky2 = netdev_priv(dev);
3583 struct sky2_hw *hw = sky2->hw;
3584 unsigned port = sky2->port;
3585 struct dev_mc_list *list = dev->mc_list;
3589 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3591 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3592 memset(filter, 0, sizeof(filter));
3594 reg = gma_read16(hw, port, GM_RX_CTRL);
3595 reg |= GM_RXCR_UCF_ENA;
3597 if (dev->flags & IFF_PROMISC) /* promiscuous */
3598 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3599 else if (dev->flags & IFF_ALLMULTI)
3600 memset(filter, 0xff, sizeof(filter));
3601 else if (netdev_mc_empty(dev) && !rx_pause)
3602 reg &= ~GM_RXCR_MCF_ENA;
3605 reg |= GM_RXCR_MCF_ENA;
3608 sky2_add_filter(filter, pause_mc_addr);
3610 for (i = 0; list && i < netdev_mc_count(dev); i++, list = list->next)
3611 sky2_add_filter(filter, list->dmi_addr);
3614 gma_write16(hw, port, GM_MC_ADDR_H1,
3615 (u16) filter[0] | ((u16) filter[1] << 8));
3616 gma_write16(hw, port, GM_MC_ADDR_H2,
3617 (u16) filter[2] | ((u16) filter[3] << 8));
3618 gma_write16(hw, port, GM_MC_ADDR_H3,
3619 (u16) filter[4] | ((u16) filter[5] << 8));
3620 gma_write16(hw, port, GM_MC_ADDR_H4,
3621 (u16) filter[6] | ((u16) filter[7] << 8));
3623 gma_write16(hw, port, GM_RX_CTRL, reg);
3626 /* Can have one global because blinking is controlled by
3627 * ethtool and that is always under RTNL mutex
3629 static void sky2_led(struct sky2_port *sky2, enum led_mode mode)
3631 struct sky2_hw *hw = sky2->hw;
3632 unsigned port = sky2->port;
3634 spin_lock_bh(&sky2->phy_lock);
3635 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3636 hw->chip_id == CHIP_ID_YUKON_EX ||
3637 hw->chip_id == CHIP_ID_YUKON_SUPR) {
3639 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3640 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3644 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3645 PHY_M_LEDC_LOS_CTRL(8) |
3646 PHY_M_LEDC_INIT_CTRL(8) |
3647 PHY_M_LEDC_STA1_CTRL(8) |
3648 PHY_M_LEDC_STA0_CTRL(8));
3651 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3652 PHY_M_LEDC_LOS_CTRL(9) |
3653 PHY_M_LEDC_INIT_CTRL(9) |
3654 PHY_M_LEDC_STA1_CTRL(9) |
3655 PHY_M_LEDC_STA0_CTRL(9));
3658 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3659 PHY_M_LEDC_LOS_CTRL(0xa) |
3660 PHY_M_LEDC_INIT_CTRL(0xa) |
3661 PHY_M_LEDC_STA1_CTRL(0xa) |
3662 PHY_M_LEDC_STA0_CTRL(0xa));
3665 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3666 PHY_M_LEDC_LOS_CTRL(1) |
3667 PHY_M_LEDC_INIT_CTRL(8) |
3668 PHY_M_LEDC_STA1_CTRL(7) |
3669 PHY_M_LEDC_STA0_CTRL(7));
3672 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3674 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3675 PHY_M_LED_MO_DUP(mode) |
3676 PHY_M_LED_MO_10(mode) |
3677 PHY_M_LED_MO_100(mode) |
3678 PHY_M_LED_MO_1000(mode) |
3679 PHY_M_LED_MO_RX(mode) |
3680 PHY_M_LED_MO_TX(mode));
3682 spin_unlock_bh(&sky2->phy_lock);
3685 /* blink LED's for finding board */
3686 static int sky2_phys_id(struct net_device *dev, u32 data)
3688 struct sky2_port *sky2 = netdev_priv(dev);
3694 for (i = 0; i < data; i++) {
3695 sky2_led(sky2, MO_LED_ON);
3696 if (msleep_interruptible(500))
3698 sky2_led(sky2, MO_LED_OFF);
3699 if (msleep_interruptible(500))
3702 sky2_led(sky2, MO_LED_NORM);
3707 static void sky2_get_pauseparam(struct net_device *dev,
3708 struct ethtool_pauseparam *ecmd)
3710 struct sky2_port *sky2 = netdev_priv(dev);
3712 switch (sky2->flow_mode) {
3714 ecmd->tx_pause = ecmd->rx_pause = 0;
3717 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
3720 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
3723 ecmd->tx_pause = ecmd->rx_pause = 1;
3726 ecmd->autoneg = (sky2->flags & SKY2_FLAG_AUTO_PAUSE)
3727 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3730 static int sky2_set_pauseparam(struct net_device *dev,
3731 struct ethtool_pauseparam *ecmd)
3733 struct sky2_port *sky2 = netdev_priv(dev);
3735 if (ecmd->autoneg == AUTONEG_ENABLE)
3736 sky2->flags |= SKY2_FLAG_AUTO_PAUSE;
3738 sky2->flags &= ~SKY2_FLAG_AUTO_PAUSE;
3740 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
3742 if (netif_running(dev))
3743 sky2_phy_reinit(sky2);
3748 static int sky2_get_coalesce(struct net_device *dev,
3749 struct ethtool_coalesce *ecmd)
3751 struct sky2_port *sky2 = netdev_priv(dev);
3752 struct sky2_hw *hw = sky2->hw;
3754 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
3755 ecmd->tx_coalesce_usecs = 0;
3757 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
3758 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
3760 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
3762 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
3763 ecmd->rx_coalesce_usecs = 0;
3765 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
3766 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
3768 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
3770 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
3771 ecmd->rx_coalesce_usecs_irq = 0;
3773 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
3774 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
3777 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
3782 /* Note: this affect both ports */
3783 static int sky2_set_coalesce(struct net_device *dev,
3784 struct ethtool_coalesce *ecmd)
3786 struct sky2_port *sky2 = netdev_priv(dev);
3787 struct sky2_hw *hw = sky2->hw;
3788 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
3790 if (ecmd->tx_coalesce_usecs > tmax ||
3791 ecmd->rx_coalesce_usecs > tmax ||
3792 ecmd->rx_coalesce_usecs_irq > tmax)
3795 if (ecmd->tx_max_coalesced_frames >= sky2->tx_ring_size-1)
3797 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
3799 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
3802 if (ecmd->tx_coalesce_usecs == 0)
3803 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
3805 sky2_write32(hw, STAT_TX_TIMER_INI,
3806 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
3807 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3809 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
3811 if (ecmd->rx_coalesce_usecs == 0)
3812 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
3814 sky2_write32(hw, STAT_LEV_TIMER_INI,
3815 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
3816 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3818 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
3820 if (ecmd->rx_coalesce_usecs_irq == 0)
3821 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
3823 sky2_write32(hw, STAT_ISR_TIMER_INI,
3824 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
3825 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3827 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
3831 static void sky2_get_ringparam(struct net_device *dev,
3832 struct ethtool_ringparam *ering)
3834 struct sky2_port *sky2 = netdev_priv(dev);
3836 ering->rx_max_pending = RX_MAX_PENDING;
3837 ering->rx_mini_max_pending = 0;
3838 ering->rx_jumbo_max_pending = 0;
3839 ering->tx_max_pending = TX_MAX_PENDING;
3841 ering->rx_pending = sky2->rx_pending;
3842 ering->rx_mini_pending = 0;
3843 ering->rx_jumbo_pending = 0;
3844 ering->tx_pending = sky2->tx_pending;
3847 static int sky2_set_ringparam(struct net_device *dev,
3848 struct ethtool_ringparam *ering)
3850 struct sky2_port *sky2 = netdev_priv(dev);
3852 if (ering->rx_pending > RX_MAX_PENDING ||
3853 ering->rx_pending < 8 ||
3854 ering->tx_pending < TX_MIN_PENDING ||
3855 ering->tx_pending > TX_MAX_PENDING)
3860 sky2->rx_pending = ering->rx_pending;
3861 sky2->tx_pending = ering->tx_pending;
3862 sky2->tx_ring_size = roundup_pow_of_two(sky2->tx_pending+1);
3864 return sky2_reattach(dev);
3867 static int sky2_get_regs_len(struct net_device *dev)
3872 static int sky2_reg_access_ok(struct sky2_hw *hw, unsigned int b)
3874 /* This complicated switch statement is to make sure and
3875 * only access regions that are unreserved.
3876 * Some blocks are only valid on dual port cards.
3880 case 5: /* Tx Arbiter 2 */
3882 case 14 ... 15: /* TX2 */
3883 case 17: case 19: /* Ram Buffer 2 */
3884 case 22 ... 23: /* Tx Ram Buffer 2 */
3885 case 25: /* Rx MAC Fifo 1 */
3886 case 27: /* Tx MAC Fifo 2 */
3887 case 31: /* GPHY 2 */
3888 case 40 ... 47: /* Pattern Ram 2 */
3889 case 52: case 54: /* TCP Segmentation 2 */
3890 case 112 ... 116: /* GMAC 2 */
3891 return hw->ports > 1;
3893 case 0: /* Control */
3894 case 2: /* Mac address */
3895 case 4: /* Tx Arbiter 1 */
3896 case 7: /* PCI express reg */
3898 case 12 ... 13: /* TX1 */
3899 case 16: case 18:/* Rx Ram Buffer 1 */
3900 case 20 ... 21: /* Tx Ram Buffer 1 */
3901 case 24: /* Rx MAC Fifo 1 */
3902 case 26: /* Tx MAC Fifo 1 */
3903 case 28 ... 29: /* Descriptor and status unit */
3904 case 30: /* GPHY 1*/
3905 case 32 ... 39: /* Pattern Ram 1 */
3906 case 48: case 50: /* TCP Segmentation 1 */
3907 case 56 ... 60: /* PCI space */
3908 case 80 ... 84: /* GMAC 1 */
3917 * Returns copy of control register region
3918 * Note: ethtool_get_regs always provides full size (16k) buffer
3920 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
3923 const struct sky2_port *sky2 = netdev_priv(dev);
3924 const void __iomem *io = sky2->hw->regs;
3929 for (b = 0; b < 128; b++) {
3930 /* skip poisonous diagnostic ram region in block 3 */
3932 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
3933 else if (sky2_reg_access_ok(sky2->hw, b))
3934 memcpy_fromio(p, io, 128);
3943 /* In order to do Jumbo packets on these chips, need to turn off the
3944 * transmit store/forward. Therefore checksum offload won't work.
3946 static int no_tx_offload(struct net_device *dev)
3948 const struct sky2_port *sky2 = netdev_priv(dev);
3949 const struct sky2_hw *hw = sky2->hw;
3951 return dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U;
3954 static int sky2_set_tx_csum(struct net_device *dev, u32 data)
3956 if (data && no_tx_offload(dev))
3959 return ethtool_op_set_tx_csum(dev, data);
3963 static int sky2_set_tso(struct net_device *dev, u32 data)
3965 if (data && no_tx_offload(dev))
3968 return ethtool_op_set_tso(dev, data);
3971 static int sky2_get_eeprom_len(struct net_device *dev)
3973 struct sky2_port *sky2 = netdev_priv(dev);
3974 struct sky2_hw *hw = sky2->hw;
3977 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
3978 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
3981 static int sky2_vpd_wait(const struct sky2_hw *hw, int cap, u16 busy)
3983 unsigned long start = jiffies;
3985 while ( (sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F) == busy) {
3986 /* Can take up to 10.6 ms for write */
3987 if (time_after(jiffies, start + HZ/4)) {
3988 dev_err(&hw->pdev->dev, PFX "VPD cycle timed out");
3997 static int sky2_vpd_read(struct sky2_hw *hw, int cap, void *data,
3998 u16 offset, size_t length)
4002 while (length > 0) {
4005 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
4006 rc = sky2_vpd_wait(hw, cap, 0);
4010 val = sky2_pci_read32(hw, cap + PCI_VPD_DATA);
4012 memcpy(data, &val, min(sizeof(val), length));
4013 offset += sizeof(u32);
4014 data += sizeof(u32);
4015 length -= sizeof(u32);
4021 static int sky2_vpd_write(struct sky2_hw *hw, int cap, const void *data,
4022 u16 offset, unsigned int length)
4027 for (i = 0; i < length; i += sizeof(u32)) {
4028 u32 val = *(u32 *)(data + i);
4030 sky2_pci_write32(hw, cap + PCI_VPD_DATA, val);
4031 sky2_pci_write32(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
4033 rc = sky2_vpd_wait(hw, cap, PCI_VPD_ADDR_F);
4040 static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4043 struct sky2_port *sky2 = netdev_priv(dev);
4044 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4049 eeprom->magic = SKY2_EEPROM_MAGIC;
4051 return sky2_vpd_read(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4054 static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
4057 struct sky2_port *sky2 = netdev_priv(dev);
4058 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
4063 if (eeprom->magic != SKY2_EEPROM_MAGIC)
4066 /* Partial writes not supported */
4067 if ((eeprom->offset & 3) || (eeprom->len & 3))
4070 return sky2_vpd_write(sky2->hw, cap, data, eeprom->offset, eeprom->len);
4074 static const struct ethtool_ops sky2_ethtool_ops = {
4075 .get_settings = sky2_get_settings,
4076 .set_settings = sky2_set_settings,
4077 .get_drvinfo = sky2_get_drvinfo,
4078 .get_wol = sky2_get_wol,
4079 .set_wol = sky2_set_wol,
4080 .get_msglevel = sky2_get_msglevel,
4081 .set_msglevel = sky2_set_msglevel,
4082 .nway_reset = sky2_nway_reset,
4083 .get_regs_len = sky2_get_regs_len,
4084 .get_regs = sky2_get_regs,
4085 .get_link = ethtool_op_get_link,
4086 .get_eeprom_len = sky2_get_eeprom_len,
4087 .get_eeprom = sky2_get_eeprom,
4088 .set_eeprom = sky2_set_eeprom,
4089 .set_sg = ethtool_op_set_sg,
4090 .set_tx_csum = sky2_set_tx_csum,
4091 .set_tso = sky2_set_tso,
4092 .get_rx_csum = sky2_get_rx_csum,
4093 .set_rx_csum = sky2_set_rx_csum,
4094 .get_strings = sky2_get_strings,
4095 .get_coalesce = sky2_get_coalesce,
4096 .set_coalesce = sky2_set_coalesce,
4097 .get_ringparam = sky2_get_ringparam,
4098 .set_ringparam = sky2_set_ringparam,
4099 .get_pauseparam = sky2_get_pauseparam,
4100 .set_pauseparam = sky2_set_pauseparam,
4101 .phys_id = sky2_phys_id,
4102 .get_sset_count = sky2_get_sset_count,
4103 .get_ethtool_stats = sky2_get_ethtool_stats,
4106 #ifdef CONFIG_SKY2_DEBUG
4108 static struct dentry *sky2_debug;
4112 * Read and parse the first part of Vital Product Data
4114 #define VPD_SIZE 128
4115 #define VPD_MAGIC 0x82
4117 static const struct vpd_tag {
4121 { "PN", "Part Number" },
4122 { "EC", "Engineering Level" },
4123 { "MN", "Manufacturer" },
4124 { "SN", "Serial Number" },
4125 { "YA", "Asset Tag" },
4126 { "VL", "First Error Log Message" },
4127 { "VF", "Second Error Log Message" },
4128 { "VB", "Boot Agent ROM Configuration" },
4129 { "VE", "EFI UNDI Configuration" },
4132 static void sky2_show_vpd(struct seq_file *seq, struct sky2_hw *hw)
4140 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
4141 vpd_size = 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
4143 seq_printf(seq, "%s Product Data\n", pci_name(hw->pdev));
4144 buf = kmalloc(vpd_size, GFP_KERNEL);
4146 seq_puts(seq, "no memory!\n");
4150 if (pci_read_vpd(hw->pdev, 0, vpd_size, buf) < 0) {
4151 seq_puts(seq, "VPD read failed\n");
4155 if (buf[0] != VPD_MAGIC) {
4156 seq_printf(seq, "VPD tag mismatch: %#x\n", buf[0]);
4160 if (len == 0 || len > vpd_size - 4) {
4161 seq_printf(seq, "Invalid id length: %d\n", len);
4165 seq_printf(seq, "%.*s\n", len, buf + 3);
4168 while (offs < vpd_size - 4) {
4171 if (!memcmp("RW", buf + offs, 2)) /* end marker */
4173 len = buf[offs + 2];
4174 if (offs + len + 3 >= vpd_size)
4177 for (i = 0; i < ARRAY_SIZE(vpd_tags); i++) {
4178 if (!memcmp(vpd_tags[i].tag, buf + offs, 2)) {
4179 seq_printf(seq, " %s: %.*s\n",
4180 vpd_tags[i].label, len, buf + offs + 3);
4190 static int sky2_debug_show(struct seq_file *seq, void *v)
4192 struct net_device *dev = seq->private;
4193 const struct sky2_port *sky2 = netdev_priv(dev);
4194 struct sky2_hw *hw = sky2->hw;
4195 unsigned port = sky2->port;
4199 sky2_show_vpd(seq, hw);
4201 seq_printf(seq, "\nIRQ src=%x mask=%x control=%x\n",
4202 sky2_read32(hw, B0_ISRC),
4203 sky2_read32(hw, B0_IMSK),
4204 sky2_read32(hw, B0_Y2_SP_ICR));
4206 if (!netif_running(dev)) {
4207 seq_printf(seq, "network not running\n");
4211 napi_disable(&hw->napi);
4212 last = sky2_read16(hw, STAT_PUT_IDX);
4214 if (hw->st_idx == last)
4215 seq_puts(seq, "Status ring (empty)\n");
4217 seq_puts(seq, "Status ring\n");
4218 for (idx = hw->st_idx; idx != last && idx < STATUS_RING_SIZE;
4219 idx = RING_NEXT(idx, STATUS_RING_SIZE)) {
4220 const struct sky2_status_le *le = hw->st_le + idx;
4221 seq_printf(seq, "[%d] %#x %d %#x\n",
4222 idx, le->opcode, le->length, le->status);
4224 seq_puts(seq, "\n");
4227 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
4228 sky2->tx_cons, sky2->tx_prod,
4229 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
4230 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
4232 /* Dump contents of tx ring */
4234 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < sky2->tx_ring_size;
4235 idx = RING_NEXT(idx, sky2->tx_ring_size)) {
4236 const struct sky2_tx_le *le = sky2->tx_le + idx;
4237 u32 a = le32_to_cpu(le->addr);
4240 seq_printf(seq, "%u:", idx);
4243 switch(le->opcode & ~HW_OWNER) {
4245 seq_printf(seq, " %#x:", a);
4248 seq_printf(seq, " mtu=%d", a);
4251 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
4254 seq_printf(seq, " csum=%#x", a);
4257 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
4260 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
4263 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
4266 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
4267 a, le16_to_cpu(le->length));
4270 if (le->ctrl & EOP) {
4271 seq_putc(seq, '\n');
4276 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
4277 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
4278 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
4279 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
4281 sky2_read32(hw, B0_Y2_SP_LISR);
4282 napi_enable(&hw->napi);
4286 static int sky2_debug_open(struct inode *inode, struct file *file)
4288 return single_open(file, sky2_debug_show, inode->i_private);
4291 static const struct file_operations sky2_debug_fops = {
4292 .owner = THIS_MODULE,
4293 .open = sky2_debug_open,
4295 .llseek = seq_lseek,
4296 .release = single_release,
4300 * Use network device events to create/remove/rename
4301 * debugfs file entries
4303 static int sky2_device_event(struct notifier_block *unused,
4304 unsigned long event, void *ptr)
4306 struct net_device *dev = ptr;
4307 struct sky2_port *sky2 = netdev_priv(dev);
4309 if (dev->netdev_ops->ndo_open != sky2_up || !sky2_debug)
4313 case NETDEV_CHANGENAME:
4314 if (sky2->debugfs) {
4315 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
4316 sky2_debug, dev->name);
4320 case NETDEV_GOING_DOWN:
4321 if (sky2->debugfs) {
4322 printk(KERN_DEBUG PFX "%s: remove debugfs\n",
4324 debugfs_remove(sky2->debugfs);
4325 sky2->debugfs = NULL;
4330 sky2->debugfs = debugfs_create_file(dev->name, S_IRUGO,
4333 if (IS_ERR(sky2->debugfs))
4334 sky2->debugfs = NULL;
4340 static struct notifier_block sky2_notifier = {
4341 .notifier_call = sky2_device_event,
4345 static __init void sky2_debug_init(void)
4349 ent = debugfs_create_dir("sky2", NULL);
4350 if (!ent || IS_ERR(ent))
4354 register_netdevice_notifier(&sky2_notifier);
4357 static __exit void sky2_debug_cleanup(void)
4360 unregister_netdevice_notifier(&sky2_notifier);
4361 debugfs_remove(sky2_debug);
4367 #define sky2_debug_init()
4368 #define sky2_debug_cleanup()
4371 /* Two copies of network device operations to handle special case of
4372 not allowing netpoll on second port */
4373 static const struct net_device_ops sky2_netdev_ops[2] = {
4375 .ndo_open = sky2_up,
4376 .ndo_stop = sky2_down,
4377 .ndo_start_xmit = sky2_xmit_frame,
4378 .ndo_do_ioctl = sky2_ioctl,
4379 .ndo_validate_addr = eth_validate_addr,
4380 .ndo_set_mac_address = sky2_set_mac_address,
4381 .ndo_set_multicast_list = sky2_set_multicast,
4382 .ndo_change_mtu = sky2_change_mtu,
4383 .ndo_tx_timeout = sky2_tx_timeout,
4384 #ifdef SKY2_VLAN_TAG_USED
4385 .ndo_vlan_rx_register = sky2_vlan_rx_register,
4387 #ifdef CONFIG_NET_POLL_CONTROLLER
4388 .ndo_poll_controller = sky2_netpoll,
4392 .ndo_open = sky2_up,
4393 .ndo_stop = sky2_down,
4394 .ndo_start_xmit = sky2_xmit_frame,
4395 .ndo_do_ioctl = sky2_ioctl,
4396 .ndo_validate_addr = eth_validate_addr,
4397 .ndo_set_mac_address = sky2_set_mac_address,
4398 .ndo_set_multicast_list = sky2_set_multicast,
4399 .ndo_change_mtu = sky2_change_mtu,
4400 .ndo_tx_timeout = sky2_tx_timeout,
4401 #ifdef SKY2_VLAN_TAG_USED
4402 .ndo_vlan_rx_register = sky2_vlan_rx_register,
4407 /* Initialize network device */
4408 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
4410 int highmem, int wol)
4412 struct sky2_port *sky2;
4413 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
4416 dev_err(&hw->pdev->dev, "etherdev alloc failed\n");
4420 SET_NETDEV_DEV(dev, &hw->pdev->dev);
4421 dev->irq = hw->pdev->irq;
4422 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
4423 dev->watchdog_timeo = TX_WATCHDOG;
4424 dev->netdev_ops = &sky2_netdev_ops[port];
4426 sky2 = netdev_priv(dev);
4429 sky2->msg_enable = netif_msg_init(debug, default_msg);
4431 /* Auto speed and flow control */
4432 sky2->flags = SKY2_FLAG_AUTO_SPEED | SKY2_FLAG_AUTO_PAUSE;
4433 if (hw->chip_id != CHIP_ID_YUKON_XL)
4434 sky2->flags |= SKY2_FLAG_RX_CHECKSUM;
4436 sky2->flow_mode = FC_BOTH;
4440 sky2->advertising = sky2_supported_modes(hw);
4443 spin_lock_init(&sky2->phy_lock);
4445 sky2->tx_pending = TX_DEF_PENDING;
4446 sky2->tx_ring_size = roundup_pow_of_two(TX_DEF_PENDING+1);
4447 sky2->rx_pending = RX_DEF_PENDING;
4449 hw->dev[port] = dev;
4453 dev->features |= NETIF_F_TSO | NETIF_F_IP_CSUM | NETIF_F_SG;
4455 dev->features |= NETIF_F_HIGHDMA;
4457 #ifdef SKY2_VLAN_TAG_USED
4458 /* The workaround for FE+ status conflicts with VLAN tag detection. */
4459 if (!(sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
4460 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0)) {
4461 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
4465 /* read the mac address */
4466 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
4467 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
4472 static void __devinit sky2_show_addr(struct net_device *dev)
4474 const struct sky2_port *sky2 = netdev_priv(dev);
4476 if (netif_msg_probe(sky2))
4477 printk(KERN_INFO PFX "%s: addr %pM\n",
4478 dev->name, dev->dev_addr);
4481 /* Handle software interrupt used during MSI test */
4482 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
4484 struct sky2_hw *hw = dev_id;
4485 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4490 if (status & Y2_IS_IRQ_SW) {
4491 hw->flags |= SKY2_HW_USE_MSI;
4492 wake_up(&hw->msi_wait);
4493 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4495 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4500 /* Test interrupt path by forcing a a software IRQ */
4501 static int __devinit sky2_test_msi(struct sky2_hw *hw)
4503 struct pci_dev *pdev = hw->pdev;
4506 init_waitqueue_head (&hw->msi_wait);
4508 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4510 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4512 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4516 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4517 sky2_read8(hw, B0_CTST);
4519 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4521 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4522 /* MSI test failed, go back to INTx mode */
4523 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4524 "switching to INTx mode.\n");
4527 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4530 sky2_write32(hw, B0_IMSK, 0);
4531 sky2_read32(hw, B0_IMSK);
4533 free_irq(pdev->irq, hw);
4538 /* This driver supports yukon2 chipset only */
4539 static const char *sky2_name(u8 chipid, char *buf, int sz)
4541 const char *name[] = {
4543 "EC Ultra", /* 0xb4 */
4544 "Extreme", /* 0xb5 */
4548 "Supreme", /* 0xb9 */
4550 "Unknown", /* 0xbb */
4551 "Optima", /* 0xbc */
4554 if (chipid >= CHIP_ID_YUKON_XL && chipid <= CHIP_ID_YUKON_OPT)
4555 strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
4557 snprintf(buf, sz, "(chip %#x)", chipid);
4561 static int __devinit sky2_probe(struct pci_dev *pdev,
4562 const struct pci_device_id *ent)
4564 struct net_device *dev;
4566 int err, using_dac = 0, wol_default;
4570 err = pci_enable_device(pdev);
4572 dev_err(&pdev->dev, "cannot enable PCI device\n");
4576 /* Get configuration information
4577 * Note: only regular PCI config access once to test for HW issues
4578 * other PCI access through shared memory for speed and to
4579 * avoid MMCONFIG problems.
4581 err = pci_read_config_dword(pdev, PCI_DEV_REG2, ®);
4583 dev_err(&pdev->dev, "PCI read config failed\n");
4588 dev_err(&pdev->dev, "PCI configuration read error\n");
4592 err = pci_request_regions(pdev, DRV_NAME);
4594 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4595 goto err_out_disable;
4598 pci_set_master(pdev);
4600 if (sizeof(dma_addr_t) > sizeof(u32) &&
4601 !(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))) {
4603 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4605 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4606 "for consistent allocations\n");
4607 goto err_out_free_regions;
4610 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4612 dev_err(&pdev->dev, "no usable DMA configuration\n");
4613 goto err_out_free_regions;
4619 /* The sk98lin vendor driver uses hardware byte swapping but
4620 * this driver uses software swapping.
4622 reg &= ~PCI_REV_DESC;
4623 err = pci_write_config_dword(pdev,PCI_DEV_REG2, reg);
4625 dev_err(&pdev->dev, "PCI write config failed\n");
4626 goto err_out_free_regions;
4630 wol_default = device_may_wakeup(&pdev->dev) ? WAKE_MAGIC : 0;
4634 hw = kzalloc(sizeof(*hw) + strlen(DRV_NAME "@pci:")
4635 + strlen(pci_name(pdev)) + 1, GFP_KERNEL);
4637 dev_err(&pdev->dev, "cannot allocate hardware struct\n");
4638 goto err_out_free_regions;
4642 sprintf(hw->irq_name, DRV_NAME "@pci:%s", pci_name(pdev));
4644 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
4646 dev_err(&pdev->dev, "cannot map device registers\n");
4647 goto err_out_free_hw;
4650 /* ring for status responses */
4651 hw->st_le = pci_alloc_consistent(pdev, STATUS_LE_BYTES, &hw->st_dma);
4653 goto err_out_iounmap;
4655 err = sky2_init(hw);
4657 goto err_out_iounmap;
4659 dev_info(&pdev->dev, "Yukon-2 %s chip revision %d\n",
4660 sky2_name(hw->chip_id, buf1, sizeof(buf1)), hw->chip_rev);
4664 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
4667 goto err_out_free_pci;
4670 if (!disable_msi && pci_enable_msi(pdev) == 0) {
4671 err = sky2_test_msi(hw);
4672 if (err == -EOPNOTSUPP)
4673 pci_disable_msi(pdev);
4675 goto err_out_free_netdev;
4678 err = register_netdev(dev);
4680 dev_err(&pdev->dev, "cannot register net device\n");
4681 goto err_out_free_netdev;
4684 netif_carrier_off(dev);
4686 netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
4688 err = request_irq(pdev->irq, sky2_intr,
4689 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
4692 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4693 goto err_out_unregister;
4695 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4696 napi_enable(&hw->napi);
4698 sky2_show_addr(dev);
4700 if (hw->ports > 1) {
4701 struct net_device *dev1;
4704 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
4705 if (dev1 && (err = register_netdev(dev1)) == 0)
4706 sky2_show_addr(dev1);
4708 dev_warn(&pdev->dev,
4709 "register of second port failed (%d)\n", err);
4717 setup_timer(&hw->watchdog_timer, sky2_watchdog, (unsigned long) hw);
4718 INIT_WORK(&hw->restart_work, sky2_restart);
4720 pci_set_drvdata(pdev, hw);
4721 pdev->d3_delay = 150;
4726 if (hw->flags & SKY2_HW_USE_MSI)
4727 pci_disable_msi(pdev);
4728 unregister_netdev(dev);
4729 err_out_free_netdev:
4732 sky2_write8(hw, B0_CTST, CS_RST_SET);
4733 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4738 err_out_free_regions:
4739 pci_release_regions(pdev);
4741 pci_disable_device(pdev);
4743 pci_set_drvdata(pdev, NULL);
4747 static void __devexit sky2_remove(struct pci_dev *pdev)
4749 struct sky2_hw *hw = pci_get_drvdata(pdev);
4755 del_timer_sync(&hw->watchdog_timer);
4756 cancel_work_sync(&hw->restart_work);
4758 for (i = hw->ports-1; i >= 0; --i)
4759 unregister_netdev(hw->dev[i]);
4761 sky2_write32(hw, B0_IMSK, 0);
4765 sky2_write8(hw, B0_CTST, CS_RST_SET);
4766 sky2_read8(hw, B0_CTST);
4768 free_irq(pdev->irq, hw);
4769 if (hw->flags & SKY2_HW_USE_MSI)
4770 pci_disable_msi(pdev);
4771 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4772 pci_release_regions(pdev);
4773 pci_disable_device(pdev);
4775 for (i = hw->ports-1; i >= 0; --i)
4776 free_netdev(hw->dev[i]);
4781 pci_set_drvdata(pdev, NULL);
4784 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
4786 struct sky2_hw *hw = pci_get_drvdata(pdev);
4792 del_timer_sync(&hw->watchdog_timer);
4793 cancel_work_sync(&hw->restart_work);
4796 for (i = 0; i < hw->ports; i++) {
4797 struct net_device *dev = hw->dev[i];
4798 struct sky2_port *sky2 = netdev_priv(dev);
4803 sky2_wol_init(sky2);
4808 device_set_wakeup_enable(&pdev->dev, wol != 0);
4810 sky2_write32(hw, B0_IMSK, 0);
4811 napi_disable(&hw->napi);
4815 pci_save_state(pdev);
4816 pci_enable_wake(pdev, pci_choose_state(pdev, state), wol);
4817 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4823 static int sky2_resume(struct pci_dev *pdev)
4825 struct sky2_hw *hw = pci_get_drvdata(pdev);
4831 err = pci_set_power_state(pdev, PCI_D0);
4835 err = pci_restore_state(pdev);
4839 pci_enable_wake(pdev, PCI_D0, 0);
4841 /* Re-enable all clocks */
4842 err = pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
4844 dev_err(&pdev->dev, "PCI write config failed\n");
4849 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4850 napi_enable(&hw->napi);
4853 for (i = 0; i < hw->ports; i++) {
4854 err = sky2_reattach(hw->dev[i]);
4864 dev_err(&pdev->dev, "resume failed (%d)\n", err);
4865 pci_disable_device(pdev);
4870 static void sky2_shutdown(struct pci_dev *pdev)
4872 sky2_suspend(pdev, PMSG_SUSPEND);
4875 static struct pci_driver sky2_driver = {
4877 .id_table = sky2_id_table,
4878 .probe = sky2_probe,
4879 .remove = __devexit_p(sky2_remove),
4881 .suspend = sky2_suspend,
4882 .resume = sky2_resume,
4884 .shutdown = sky2_shutdown,
4887 static int __init sky2_init_module(void)
4889 pr_info(PFX "driver version " DRV_VERSION "\n");
4892 return pci_register_driver(&sky2_driver);
4895 static void __exit sky2_cleanup_module(void)
4897 pci_unregister_driver(&sky2_driver);
4898 sky2_debug_cleanup();
4901 module_init(sky2_init_module);
4902 module_exit(sky2_cleanup_module);
4904 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
4905 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
4906 MODULE_LICENSE("GPL");
4907 MODULE_VERSION(DRV_VERSION);