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/version.h>
28 #include <linux/module.h>
29 #include <linux/netdevice.h>
30 #include <linux/dma-mapping.h>
31 #include <linux/etherdevice.h>
32 #include <linux/ethtool.h>
33 #include <linux/pci.h>
36 #include <linux/tcp.h>
38 #include <linux/delay.h>
39 #include <linux/workqueue.h>
40 #include <linux/if_vlan.h>
41 #include <linux/prefetch.h>
42 #include <linux/debugfs.h>
43 #include <linux/mii.h>
47 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
48 #define SKY2_VLAN_TAG_USED 1
53 #define DRV_NAME "sky2"
54 #define DRV_VERSION "1.18"
55 #define PFX DRV_NAME " "
58 * The Yukon II chipset takes 64 bit command blocks (called list elements)
59 * that are organized into three (receive, transmit, status) different rings
63 #define RX_LE_SIZE 1024
64 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
65 #define RX_MAX_PENDING (RX_LE_SIZE/6 - 2)
66 #define RX_DEF_PENDING RX_MAX_PENDING
67 #define RX_SKB_ALIGN 8
69 #define TX_RING_SIZE 512
70 #define TX_DEF_PENDING (TX_RING_SIZE - 1)
71 #define TX_MIN_PENDING 64
72 #define MAX_SKB_TX_LE (4 + (sizeof(dma_addr_t)/sizeof(u32))*MAX_SKB_FRAGS)
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 const struct pci_device_id 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_DLINK, 0x4b00) }, /* DGE-560T */
106 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
107 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
108 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B03) }, /* DGE-550T */
109 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4354) }, /* 88E8040 */
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4356) }, /* 88EC033 */
123 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x435A) }, /* 88E8048 */
124 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) }, /* 88E8052 */
125 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) }, /* 88E8050 */
126 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) }, /* 88E8053 */
127 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) }, /* 88E8055 */
128 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4364) }, /* 88E8056 */
129 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4365) }, /* 88E8070 */
130 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4366) }, /* 88EC036 */
131 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4367) }, /* 88EC032 */
132 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4368) }, /* 88EC034 */
133 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4369) }, /* 88EC042 */
134 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436A) }, /* 88E8058 */
135 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436B) }, /* 88E8071 */
139 MODULE_DEVICE_TABLE(pci, sky2_id_table);
141 /* Avoid conditionals by using array */
142 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
143 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
144 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
146 /* This driver supports yukon2 chipset only */
147 static const char *yukon2_name[] = {
149 "EC Ultra", /* 0xb4 */
150 "Extreme", /* 0xb5 */
156 static void sky2_set_multicast(struct net_device *dev);
158 /* Access to external PHY */
159 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
163 gma_write16(hw, port, GM_SMI_DATA, val);
164 gma_write16(hw, port, GM_SMI_CTRL,
165 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
167 for (i = 0; i < PHY_RETRIES; i++) {
168 if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
173 printk(KERN_WARNING PFX "%s: phy write timeout\n", hw->dev[port]->name);
177 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
181 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
182 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
184 for (i = 0; i < PHY_RETRIES; i++) {
185 if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL) {
186 *val = gma_read16(hw, port, GM_SMI_DATA);
196 static u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
200 if (__gm_phy_read(hw, port, reg, &v) != 0)
201 printk(KERN_WARNING PFX "%s: phy read timeout\n", hw->dev[port]->name);
206 static void sky2_power_on(struct sky2_hw *hw)
208 /* switch power to VCC (WA for VAUX problem) */
209 sky2_write8(hw, B0_POWER_CTRL,
210 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
212 /* disable Core Clock Division, */
213 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
215 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
216 /* enable bits are inverted */
217 sky2_write8(hw, B2_Y2_CLK_GATE,
218 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
219 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
220 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
222 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
224 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
227 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
229 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
230 /* set all bits to 0 except bits 15..12 and 8 */
231 reg &= P_ASPM_CONTROL_MSK;
232 sky2_pci_write32(hw, PCI_DEV_REG4, reg);
234 reg = sky2_pci_read32(hw, PCI_DEV_REG5);
235 /* set all bits to 0 except bits 28 & 27 */
236 reg &= P_CTL_TIM_VMAIN_AV_MSK;
237 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
239 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
241 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
242 reg = sky2_read32(hw, B2_GP_IO);
243 reg |= GLB_GPIO_STAT_RACE_DIS;
244 sky2_write32(hw, B2_GP_IO, reg);
246 sky2_read32(hw, B2_GP_IO);
250 static void sky2_power_aux(struct sky2_hw *hw)
252 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
253 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
255 /* enable bits are inverted */
256 sky2_write8(hw, B2_Y2_CLK_GATE,
257 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
258 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
259 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
261 /* switch power to VAUX */
262 if (sky2_read16(hw, B0_CTST) & Y2_VAUX_AVAIL)
263 sky2_write8(hw, B0_POWER_CTRL,
264 (PC_VAUX_ENA | PC_VCC_ENA |
265 PC_VAUX_ON | PC_VCC_OFF));
268 static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
272 /* disable all GMAC IRQ's */
273 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
274 /* disable PHY IRQs */
275 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
277 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
278 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
279 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
280 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
282 reg = gma_read16(hw, port, GM_RX_CTRL);
283 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
284 gma_write16(hw, port, GM_RX_CTRL, reg);
287 /* flow control to advertise bits */
288 static const u16 copper_fc_adv[] = {
290 [FC_TX] = PHY_M_AN_ASP,
291 [FC_RX] = PHY_M_AN_PC,
292 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
295 /* flow control to advertise bits when using 1000BaseX */
296 static const u16 fiber_fc_adv[] = {
297 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
298 [FC_TX] = PHY_M_P_ASYM_MD_X,
299 [FC_RX] = PHY_M_P_SYM_MD_X,
300 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
303 /* flow control to GMA disable bits */
304 static const u16 gm_fc_disable[] = {
305 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
306 [FC_TX] = GM_GPCR_FC_RX_DIS,
307 [FC_RX] = GM_GPCR_FC_TX_DIS,
312 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
314 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
315 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
317 if (sky2->autoneg == AUTONEG_ENABLE &&
318 !(hw->flags & SKY2_HW_NEWER_PHY)) {
319 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
321 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
323 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
325 /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
326 if (hw->chip_id == CHIP_ID_YUKON_EC)
327 /* set downshift counter to 3x and enable downshift */
328 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
330 /* set master & slave downshift counter to 1x */
331 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
333 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
336 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
337 if (sky2_is_copper(hw)) {
338 if (!(hw->flags & SKY2_HW_GIGABIT)) {
339 /* enable automatic crossover */
340 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
342 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
343 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
346 /* Enable Class A driver for FE+ A0 */
347 spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2);
348 spec |= PHY_M_FESC_SEL_CL_A;
349 gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec);
352 /* disable energy detect */
353 ctrl &= ~PHY_M_PC_EN_DET_MSK;
355 /* enable automatic crossover */
356 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
358 /* downshift on PHY 88E1112 and 88E1149 is changed */
359 if (sky2->autoneg == AUTONEG_ENABLE
360 && (hw->flags & SKY2_HW_NEWER_PHY)) {
361 /* set downshift counter to 3x and enable downshift */
362 ctrl &= ~PHY_M_PC_DSC_MSK;
363 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
367 /* workaround for deviation #4.88 (CRC errors) */
368 /* disable Automatic Crossover */
370 ctrl &= ~PHY_M_PC_MDIX_MSK;
373 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
375 /* special setup for PHY 88E1112 Fiber */
376 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
377 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
379 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
380 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
381 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
382 ctrl &= ~PHY_M_MAC_MD_MSK;
383 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
384 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
386 if (hw->pmd_type == 'P') {
387 /* select page 1 to access Fiber registers */
388 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
390 /* for SFP-module set SIGDET polarity to low */
391 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
392 ctrl |= PHY_M_FIB_SIGD_POL;
393 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
396 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
404 if (sky2->autoneg == AUTONEG_ENABLE) {
405 if (sky2_is_copper(hw)) {
406 if (sky2->advertising & ADVERTISED_1000baseT_Full)
407 ct1000 |= PHY_M_1000C_AFD;
408 if (sky2->advertising & ADVERTISED_1000baseT_Half)
409 ct1000 |= PHY_M_1000C_AHD;
410 if (sky2->advertising & ADVERTISED_100baseT_Full)
411 adv |= PHY_M_AN_100_FD;
412 if (sky2->advertising & ADVERTISED_100baseT_Half)
413 adv |= PHY_M_AN_100_HD;
414 if (sky2->advertising & ADVERTISED_10baseT_Full)
415 adv |= PHY_M_AN_10_FD;
416 if (sky2->advertising & ADVERTISED_10baseT_Half)
417 adv |= PHY_M_AN_10_HD;
419 adv |= copper_fc_adv[sky2->flow_mode];
420 } else { /* special defines for FIBER (88E1040S only) */
421 if (sky2->advertising & ADVERTISED_1000baseT_Full)
422 adv |= PHY_M_AN_1000X_AFD;
423 if (sky2->advertising & ADVERTISED_1000baseT_Half)
424 adv |= PHY_M_AN_1000X_AHD;
426 adv |= fiber_fc_adv[sky2->flow_mode];
429 /* Restart Auto-negotiation */
430 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
432 /* forced speed/duplex settings */
433 ct1000 = PHY_M_1000C_MSE;
435 /* Disable auto update for duplex flow control and speed */
436 reg |= GM_GPCR_AU_ALL_DIS;
438 switch (sky2->speed) {
440 ctrl |= PHY_CT_SP1000;
441 reg |= GM_GPCR_SPEED_1000;
444 ctrl |= PHY_CT_SP100;
445 reg |= GM_GPCR_SPEED_100;
449 if (sky2->duplex == DUPLEX_FULL) {
450 reg |= GM_GPCR_DUP_FULL;
451 ctrl |= PHY_CT_DUP_MD;
452 } else if (sky2->speed < SPEED_1000)
453 sky2->flow_mode = FC_NONE;
456 reg |= gm_fc_disable[sky2->flow_mode];
458 /* Forward pause packets to GMAC? */
459 if (sky2->flow_mode & FC_RX)
460 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
462 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
465 gma_write16(hw, port, GM_GP_CTRL, reg);
467 if (hw->flags & SKY2_HW_GIGABIT)
468 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
470 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
471 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
473 /* Setup Phy LED's */
474 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
477 switch (hw->chip_id) {
478 case CHIP_ID_YUKON_FE:
479 /* on 88E3082 these bits are at 11..9 (shifted left) */
480 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
482 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
484 /* delete ACT LED control bits */
485 ctrl &= ~PHY_M_FELP_LED1_MSK;
486 /* change ACT LED control to blink mode */
487 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
488 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
491 case CHIP_ID_YUKON_FE_P:
492 /* Enable Link Partner Next Page */
493 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
494 ctrl |= PHY_M_PC_ENA_LIP_NP;
496 /* disable Energy Detect and enable scrambler */
497 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
498 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
500 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
501 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
502 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
503 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
505 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
508 case CHIP_ID_YUKON_XL:
509 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
511 /* select page 3 to access LED control register */
512 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
514 /* set LED Function Control register */
515 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
516 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
517 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
518 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
519 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
521 /* set Polarity Control register */
522 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
523 (PHY_M_POLC_LS1_P_MIX(4) |
524 PHY_M_POLC_IS0_P_MIX(4) |
525 PHY_M_POLC_LOS_CTRL(2) |
526 PHY_M_POLC_INIT_CTRL(2) |
527 PHY_M_POLC_STA1_CTRL(2) |
528 PHY_M_POLC_STA0_CTRL(2)));
530 /* restore page register */
531 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
534 case CHIP_ID_YUKON_EC_U:
535 case CHIP_ID_YUKON_EX:
536 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
538 /* select page 3 to access LED control register */
539 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
541 /* set LED Function Control register */
542 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
543 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
544 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
545 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
546 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
548 /* set Blink Rate in LED Timer Control Register */
549 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
550 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
551 /* restore page register */
552 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
556 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
557 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
558 /* turn off the Rx LED (LED_RX) */
559 ledover &= ~PHY_M_LED_MO_RX;
562 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
563 hw->chip_rev == CHIP_REV_YU_EC_U_A1) {
564 /* apply fixes in PHY AFE */
565 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
567 /* increase differential signal amplitude in 10BASE-T */
568 gm_phy_write(hw, port, 0x18, 0xaa99);
569 gm_phy_write(hw, port, 0x17, 0x2011);
571 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
572 gm_phy_write(hw, port, 0x18, 0xa204);
573 gm_phy_write(hw, port, 0x17, 0x2002);
575 /* set page register to 0 */
576 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
577 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
578 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
579 /* apply workaround for integrated resistors calibration */
580 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
581 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
582 } else if (hw->chip_id != CHIP_ID_YUKON_EX) {
583 /* no effect on Yukon-XL */
584 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
586 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
587 /* turn on 100 Mbps LED (LED_LINK100) */
588 ledover |= PHY_M_LED_MO_100;
592 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
596 /* Enable phy interrupt on auto-negotiation complete (or link up) */
597 if (sky2->autoneg == AUTONEG_ENABLE)
598 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
600 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
603 static void sky2_phy_power(struct sky2_hw *hw, unsigned port, int onoff)
606 static const u32 phy_power[]
607 = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
609 /* looks like this XL is back asswards .. */
610 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
613 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
614 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
616 /* Turn off phy power saving */
617 reg1 &= ~phy_power[port];
619 reg1 |= phy_power[port];
621 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
622 sky2_pci_read32(hw, PCI_DEV_REG1);
623 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
627 /* Force a renegotiation */
628 static void sky2_phy_reinit(struct sky2_port *sky2)
630 spin_lock_bh(&sky2->phy_lock);
631 sky2_phy_init(sky2->hw, sky2->port);
632 spin_unlock_bh(&sky2->phy_lock);
635 /* Put device in state to listen for Wake On Lan */
636 static void sky2_wol_init(struct sky2_port *sky2)
638 struct sky2_hw *hw = sky2->hw;
639 unsigned port = sky2->port;
640 enum flow_control save_mode;
644 /* Bring hardware out of reset */
645 sky2_write16(hw, B0_CTST, CS_RST_CLR);
646 sky2_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
648 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
649 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
652 * sky2_reset will re-enable on resume
654 save_mode = sky2->flow_mode;
655 ctrl = sky2->advertising;
657 sky2->advertising &= ~(ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full);
658 sky2->flow_mode = FC_NONE;
659 sky2_phy_power(hw, port, 1);
660 sky2_phy_reinit(sky2);
662 sky2->flow_mode = save_mode;
663 sky2->advertising = ctrl;
665 /* Set GMAC to no flow control and auto update for speed/duplex */
666 gma_write16(hw, port, GM_GP_CTRL,
667 GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
668 GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
670 /* Set WOL address */
671 memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
672 sky2->netdev->dev_addr, ETH_ALEN);
674 /* Turn on appropriate WOL control bits */
675 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
677 if (sky2->wol & WAKE_PHY)
678 ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
680 ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
682 if (sky2->wol & WAKE_MAGIC)
683 ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
685 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;;
687 ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
688 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
690 /* Turn on legacy PCI-Express PME mode */
691 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
692 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
693 reg1 |= PCI_Y2_PME_LEGACY;
694 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
695 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
698 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
702 static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
704 struct net_device *dev = hw->dev[port];
706 if (dev->mtu <= ETH_DATA_LEN)
707 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
708 TX_JUMBO_DIS | TX_STFW_ENA);
710 else if (hw->chip_id != CHIP_ID_YUKON_EC_U)
711 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
712 TX_STFW_ENA | TX_JUMBO_ENA);
714 /* set Tx GMAC FIFO Almost Empty Threshold */
715 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
716 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
718 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
719 TX_JUMBO_ENA | TX_STFW_DIS);
721 /* Can't do offload because of lack of store/forward */
722 dev->features &= ~(NETIF_F_TSO | NETIF_F_SG | NETIF_F_ALL_CSUM);
726 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
728 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
732 const u8 *addr = hw->dev[port]->dev_addr;
734 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
735 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
737 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
739 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
740 /* WA DEV_472 -- looks like crossed wires on port 2 */
741 /* clear GMAC 1 Control reset */
742 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
744 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
745 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
746 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
747 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
748 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
751 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
753 /* Enable Transmit FIFO Underrun */
754 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
756 spin_lock_bh(&sky2->phy_lock);
757 sky2_phy_init(hw, port);
758 spin_unlock_bh(&sky2->phy_lock);
761 reg = gma_read16(hw, port, GM_PHY_ADDR);
762 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
764 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
765 gma_read16(hw, port, i);
766 gma_write16(hw, port, GM_PHY_ADDR, reg);
768 /* transmit control */
769 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
771 /* receive control reg: unicast + multicast + no FCS */
772 gma_write16(hw, port, GM_RX_CTRL,
773 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
775 /* transmit flow control */
776 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
778 /* transmit parameter */
779 gma_write16(hw, port, GM_TX_PARAM,
780 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
781 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
782 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
783 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
785 /* serial mode register */
786 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
787 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
789 if (hw->dev[port]->mtu > ETH_DATA_LEN)
790 reg |= GM_SMOD_JUMBO_ENA;
792 gma_write16(hw, port, GM_SERIAL_MODE, reg);
794 /* virtual address for data */
795 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
797 /* physical address: used for pause frames */
798 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
800 /* ignore counter overflows */
801 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
802 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
803 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
805 /* Configure Rx MAC FIFO */
806 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
807 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
808 if (hw->chip_id == CHIP_ID_YUKON_EX ||
809 hw->chip_id == CHIP_ID_YUKON_FE_P)
810 rx_reg |= GMF_RX_OVER_ON;
812 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
814 /* Flush Rx MAC FIFO on any flow control or error */
815 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
817 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
818 reg = RX_GMF_FL_THR_DEF + 1;
819 /* Another magic mystery workaround from sk98lin */
820 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
821 hw->chip_rev == CHIP_REV_YU_FE2_A0)
823 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
825 /* Configure Tx MAC FIFO */
826 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
827 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
829 /* On chips without ram buffer, pause is controled by MAC level */
830 if (sky2_read8(hw, B2_E_0) == 0) {
831 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
832 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
834 sky2_set_tx_stfwd(hw, port);
839 /* Assign Ram Buffer allocation to queue */
840 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
844 /* convert from K bytes to qwords used for hw register */
847 end = start + space - 1;
849 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
850 sky2_write32(hw, RB_ADDR(q, RB_START), start);
851 sky2_write32(hw, RB_ADDR(q, RB_END), end);
852 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
853 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
855 if (q == Q_R1 || q == Q_R2) {
856 u32 tp = space - space/4;
858 /* On receive queue's set the thresholds
859 * give receiver priority when > 3/4 full
860 * send pause when down to 2K
862 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
863 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
866 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
867 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
869 /* Enable store & forward on Tx queue's because
870 * Tx FIFO is only 1K on Yukon
872 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
875 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
876 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
879 /* Setup Bus Memory Interface */
880 static void sky2_qset(struct sky2_hw *hw, u16 q)
882 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
883 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
884 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
885 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
888 /* Setup prefetch unit registers. This is the interface between
889 * hardware and driver list elements
891 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
894 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
895 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
896 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
897 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
898 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
899 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
901 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
904 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
906 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
908 sky2->tx_prod = RING_NEXT(sky2->tx_prod, TX_RING_SIZE);
913 static void tx_init(struct sky2_port *sky2)
915 struct sky2_tx_le *le;
917 sky2->tx_prod = sky2->tx_cons = 0;
919 sky2->tx_last_mss = 0;
921 le = get_tx_le(sky2);
923 le->opcode = OP_ADDR64 | HW_OWNER;
927 static inline struct tx_ring_info *tx_le_re(struct sky2_port *sky2,
928 struct sky2_tx_le *le)
930 return sky2->tx_ring + (le - sky2->tx_le);
933 /* Update chip's next pointer */
934 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
936 /* Make sure write' to descriptors are complete before we tell hardware */
938 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
940 /* Synchronize I/O on since next processor may write to tail */
945 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
947 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
948 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
953 /* Build description to hardware for one receive segment */
954 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
955 dma_addr_t map, unsigned len)
957 struct sky2_rx_le *le;
958 u32 hi = upper_32_bits(map);
960 if (sky2->rx_addr64 != hi) {
961 le = sky2_next_rx(sky2);
962 le->addr = cpu_to_le32(hi);
963 le->opcode = OP_ADDR64 | HW_OWNER;
964 sky2->rx_addr64 = upper_32_bits(map + len);
967 le = sky2_next_rx(sky2);
968 le->addr = cpu_to_le32((u32) map);
969 le->length = cpu_to_le16(len);
970 le->opcode = op | HW_OWNER;
973 /* Build description to hardware for one possibly fragmented skb */
974 static void sky2_rx_submit(struct sky2_port *sky2,
975 const struct rx_ring_info *re)
979 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
981 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
982 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
986 static void sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
989 struct sk_buff *skb = re->skb;
992 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
993 pci_unmap_len_set(re, data_size, size);
995 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
996 re->frag_addr[i] = pci_map_page(pdev,
997 skb_shinfo(skb)->frags[i].page,
998 skb_shinfo(skb)->frags[i].page_offset,
999 skb_shinfo(skb)->frags[i].size,
1000 PCI_DMA_FROMDEVICE);
1003 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1005 struct sk_buff *skb = re->skb;
1008 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
1009 PCI_DMA_FROMDEVICE);
1011 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1012 pci_unmap_page(pdev, re->frag_addr[i],
1013 skb_shinfo(skb)->frags[i].size,
1014 PCI_DMA_FROMDEVICE);
1017 /* Tell chip where to start receive checksum.
1018 * Actually has two checksums, but set both same to avoid possible byte
1021 static void rx_set_checksum(struct sky2_port *sky2)
1023 struct sky2_rx_le *le = sky2_next_rx(sky2);
1025 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1027 le->opcode = OP_TCPSTART | HW_OWNER;
1029 sky2_write32(sky2->hw,
1030 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1031 sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
1035 * The RX Stop command will not work for Yukon-2 if the BMU does not
1036 * reach the end of packet and since we can't make sure that we have
1037 * incoming data, we must reset the BMU while it is not doing a DMA
1038 * transfer. Since it is possible that the RX path is still active,
1039 * the RX RAM buffer will be stopped first, so any possible incoming
1040 * data will not trigger a DMA. After the RAM buffer is stopped, the
1041 * BMU is polled until any DMA in progress is ended and only then it
1044 static void sky2_rx_stop(struct sky2_port *sky2)
1046 struct sky2_hw *hw = sky2->hw;
1047 unsigned rxq = rxqaddr[sky2->port];
1050 /* disable the RAM Buffer receive queue */
1051 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1053 for (i = 0; i < 0xffff; i++)
1054 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1055 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1058 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
1059 sky2->netdev->name);
1061 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1063 /* reset the Rx prefetch unit */
1064 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1068 /* Clean out receive buffer area, assumes receiver hardware stopped */
1069 static void sky2_rx_clean(struct sky2_port *sky2)
1073 memset(sky2->rx_le, 0, RX_LE_BYTES);
1074 for (i = 0; i < sky2->rx_pending; i++) {
1075 struct rx_ring_info *re = sky2->rx_ring + i;
1078 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1085 /* Basic MII support */
1086 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1088 struct mii_ioctl_data *data = if_mii(ifr);
1089 struct sky2_port *sky2 = netdev_priv(dev);
1090 struct sky2_hw *hw = sky2->hw;
1091 int err = -EOPNOTSUPP;
1093 if (!netif_running(dev))
1094 return -ENODEV; /* Phy still in reset */
1098 data->phy_id = PHY_ADDR_MARV;
1104 spin_lock_bh(&sky2->phy_lock);
1105 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1106 spin_unlock_bh(&sky2->phy_lock);
1108 data->val_out = val;
1113 if (!capable(CAP_NET_ADMIN))
1116 spin_lock_bh(&sky2->phy_lock);
1117 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1119 spin_unlock_bh(&sky2->phy_lock);
1125 #ifdef SKY2_VLAN_TAG_USED
1126 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
1128 struct sky2_port *sky2 = netdev_priv(dev);
1129 struct sky2_hw *hw = sky2->hw;
1130 u16 port = sky2->port;
1132 netif_tx_lock_bh(dev);
1133 netif_poll_disable(sky2->hw->dev[0]);
1137 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1139 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1142 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1144 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1148 netif_poll_enable(sky2->hw->dev[0]);
1149 netif_tx_unlock_bh(dev);
1154 * Allocate an skb for receiving. If the MTU is large enough
1155 * make the skb non-linear with a fragment list of pages.
1157 * It appears the hardware has a bug in the FIFO logic that
1158 * cause it to hang if the FIFO gets overrun and the receive buffer
1159 * is not 64 byte aligned. The buffer returned from netdev_alloc_skb is
1160 * aligned except if slab debugging is enabled.
1162 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2)
1164 struct sk_buff *skb;
1168 skb = netdev_alloc_skb(sky2->netdev, sky2->rx_data_size + RX_SKB_ALIGN);
1172 p = (unsigned long) skb->data;
1173 skb_reserve(skb, ALIGN(p, RX_SKB_ALIGN) - p);
1175 for (i = 0; i < sky2->rx_nfrags; i++) {
1176 struct page *page = alloc_page(GFP_ATOMIC);
1180 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1190 static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1192 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1196 * Allocate and setup receiver buffer pool.
1197 * Normal case this ends up creating one list element for skb
1198 * in the receive ring. Worst case if using large MTU and each
1199 * allocation falls on a different 64 bit region, that results
1200 * in 6 list elements per ring entry.
1201 * One element is used for checksum enable/disable, and one
1202 * extra to avoid wrap.
1204 static int sky2_rx_start(struct sky2_port *sky2)
1206 struct sky2_hw *hw = sky2->hw;
1207 struct rx_ring_info *re;
1208 unsigned rxq = rxqaddr[sky2->port];
1209 unsigned i, size, space, thresh;
1211 sky2->rx_put = sky2->rx_next = 0;
1214 /* On PCI express lowering the watermark gives better performance */
1215 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
1216 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1218 /* These chips have no ram buffer?
1219 * MAC Rx RAM Read is controlled by hardware */
1220 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1221 (hw->chip_rev == CHIP_REV_YU_EC_U_A1
1222 || hw->chip_rev == CHIP_REV_YU_EC_U_B0))
1223 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1225 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1227 if (!(hw->flags & SKY2_HW_NEW_LE))
1228 rx_set_checksum(sky2);
1230 /* Space needed for frame data + headers rounded up */
1231 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1233 /* Stopping point for hardware truncation */
1234 thresh = (size - 8) / sizeof(u32);
1236 /* Account for overhead of skb - to avoid order > 0 allocation */
1237 space = SKB_DATA_ALIGN(size) + NET_SKB_PAD
1238 + sizeof(struct skb_shared_info);
1240 sky2->rx_nfrags = space >> PAGE_SHIFT;
1241 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1243 if (sky2->rx_nfrags != 0) {
1244 /* Compute residue after pages */
1245 space = sky2->rx_nfrags << PAGE_SHIFT;
1252 /* Optimize to handle small packets and headers */
1253 if (size < copybreak)
1255 if (size < ETH_HLEN)
1258 sky2->rx_data_size = size;
1261 for (i = 0; i < sky2->rx_pending; i++) {
1262 re = sky2->rx_ring + i;
1264 re->skb = sky2_rx_alloc(sky2);
1268 sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size);
1269 sky2_rx_submit(sky2, re);
1273 * The receiver hangs if it receives frames larger than the
1274 * packet buffer. As a workaround, truncate oversize frames, but
1275 * the register is limited to 9 bits, so if you do frames > 2052
1276 * you better get the MTU right!
1279 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1281 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1282 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1285 /* Tell chip about available buffers */
1286 sky2_rx_update(sky2, rxq);
1289 sky2_rx_clean(sky2);
1293 /* Bring up network interface. */
1294 static int sky2_up(struct net_device *dev)
1296 struct sky2_port *sky2 = netdev_priv(dev);
1297 struct sky2_hw *hw = sky2->hw;
1298 unsigned port = sky2->port;
1300 int cap, err = -ENOMEM;
1301 struct net_device *otherdev = hw->dev[sky2->port^1];
1304 * On dual port PCI-X card, there is an problem where status
1305 * can be received out of order due to split transactions
1307 if (otherdev && netif_running(otherdev) &&
1308 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1309 struct sky2_port *osky2 = netdev_priv(otherdev);
1312 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1313 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1314 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1320 if (netif_msg_ifup(sky2))
1321 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
1323 netif_carrier_off(dev);
1325 /* must be power of 2 */
1326 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1328 sizeof(struct sky2_tx_le),
1333 sky2->tx_ring = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info),
1340 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1344 memset(sky2->rx_le, 0, RX_LE_BYTES);
1346 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1351 sky2_phy_power(hw, port, 1);
1353 sky2_mac_init(hw, port);
1355 /* Register is number of 4K blocks on internal RAM buffer. */
1356 ramsize = sky2_read8(hw, B2_E_0) * 4;
1360 pr_debug(PFX "%s: ram buffer %dK\n", dev->name, ramsize);
1362 rxspace = ramsize / 2;
1364 rxspace = 8 + (2*(ramsize - 16))/3;
1366 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1367 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1369 /* Make sure SyncQ is disabled */
1370 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1374 sky2_qset(hw, txqaddr[port]);
1376 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1377 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1378 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1380 /* Set almost empty threshold */
1381 if (hw->chip_id == CHIP_ID_YUKON_EC_U
1382 && hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1383 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1385 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1388 err = sky2_rx_start(sky2);
1392 /* Enable interrupts from phy/mac for port */
1393 imask = sky2_read32(hw, B0_IMSK);
1394 imask |= portirq_msk[port];
1395 sky2_write32(hw, B0_IMSK, imask);
1401 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1402 sky2->rx_le, sky2->rx_le_map);
1406 pci_free_consistent(hw->pdev,
1407 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1408 sky2->tx_le, sky2->tx_le_map);
1411 kfree(sky2->tx_ring);
1412 kfree(sky2->rx_ring);
1414 sky2->tx_ring = NULL;
1415 sky2->rx_ring = NULL;
1419 /* Modular subtraction in ring */
1420 static inline int tx_dist(unsigned tail, unsigned head)
1422 return (head - tail) & (TX_RING_SIZE - 1);
1425 /* Number of list elements available for next tx */
1426 static inline int tx_avail(const struct sky2_port *sky2)
1428 return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
1431 /* Estimate of number of transmit list elements required */
1432 static unsigned tx_le_req(const struct sk_buff *skb)
1436 count = sizeof(dma_addr_t) / sizeof(u32);
1437 count += skb_shinfo(skb)->nr_frags * count;
1439 if (skb_is_gso(skb))
1442 if (skb->ip_summed == CHECKSUM_PARTIAL)
1449 * Put one packet in ring for transmit.
1450 * A single packet can generate multiple list elements, and
1451 * the number of ring elements will probably be less than the number
1452 * of list elements used.
1454 static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1456 struct sky2_port *sky2 = netdev_priv(dev);
1457 struct sky2_hw *hw = sky2->hw;
1458 struct sky2_tx_le *le = NULL;
1459 struct tx_ring_info *re;
1466 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1467 return NETDEV_TX_BUSY;
1469 if (unlikely(netif_msg_tx_queued(sky2)))
1470 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1471 dev->name, sky2->tx_prod, skb->len);
1473 len = skb_headlen(skb);
1474 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1475 addr64 = upper_32_bits(mapping);
1477 /* Send high bits if changed or crosses boundary */
1478 if (addr64 != sky2->tx_addr64 ||
1479 upper_32_bits(mapping + len) != sky2->tx_addr64) {
1480 le = get_tx_le(sky2);
1481 le->addr = cpu_to_le32(addr64);
1482 le->opcode = OP_ADDR64 | HW_OWNER;
1483 sky2->tx_addr64 = upper_32_bits(mapping + len);
1486 /* Check for TCP Segmentation Offload */
1487 mss = skb_shinfo(skb)->gso_size;
1490 if (!(hw->flags & SKY2_HW_NEW_LE))
1491 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1493 if (mss != sky2->tx_last_mss) {
1494 le = get_tx_le(sky2);
1495 le->addr = cpu_to_le32(mss);
1497 if (hw->flags & SKY2_HW_NEW_LE)
1498 le->opcode = OP_MSS | HW_OWNER;
1500 le->opcode = OP_LRGLEN | HW_OWNER;
1501 sky2->tx_last_mss = mss;
1506 #ifdef SKY2_VLAN_TAG_USED
1507 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1508 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1510 le = get_tx_le(sky2);
1512 le->opcode = OP_VLAN|HW_OWNER;
1514 le->opcode |= OP_VLAN;
1515 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1520 /* Handle TCP checksum offload */
1521 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1522 /* On Yukon EX (some versions) encoding change. */
1523 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1524 ctrl |= CALSUM; /* auto checksum */
1526 const unsigned offset = skb_transport_offset(skb);
1529 tcpsum = offset << 16; /* sum start */
1530 tcpsum |= offset + skb->csum_offset; /* sum write */
1532 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1533 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1536 if (tcpsum != sky2->tx_tcpsum) {
1537 sky2->tx_tcpsum = tcpsum;
1539 le = get_tx_le(sky2);
1540 le->addr = cpu_to_le32(tcpsum);
1541 le->length = 0; /* initial checksum value */
1542 le->ctrl = 1; /* one packet */
1543 le->opcode = OP_TCPLISW | HW_OWNER;
1548 le = get_tx_le(sky2);
1549 le->addr = cpu_to_le32((u32) mapping);
1550 le->length = cpu_to_le16(len);
1552 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1554 re = tx_le_re(sky2, le);
1556 pci_unmap_addr_set(re, mapaddr, mapping);
1557 pci_unmap_len_set(re, maplen, len);
1559 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1560 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1562 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1563 frag->size, PCI_DMA_TODEVICE);
1564 addr64 = upper_32_bits(mapping);
1565 if (addr64 != sky2->tx_addr64) {
1566 le = get_tx_le(sky2);
1567 le->addr = cpu_to_le32(addr64);
1569 le->opcode = OP_ADDR64 | HW_OWNER;
1570 sky2->tx_addr64 = addr64;
1573 le = get_tx_le(sky2);
1574 le->addr = cpu_to_le32((u32) mapping);
1575 le->length = cpu_to_le16(frag->size);
1577 le->opcode = OP_BUFFER | HW_OWNER;
1579 re = tx_le_re(sky2, le);
1581 pci_unmap_addr_set(re, mapaddr, mapping);
1582 pci_unmap_len_set(re, maplen, frag->size);
1587 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1588 netif_stop_queue(dev);
1590 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1592 dev->trans_start = jiffies;
1593 return NETDEV_TX_OK;
1597 * Free ring elements from starting at tx_cons until "done"
1599 * NB: the hardware will tell us about partial completion of multi-part
1600 * buffers so make sure not to free skb to early.
1602 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1604 struct net_device *dev = sky2->netdev;
1605 struct pci_dev *pdev = sky2->hw->pdev;
1608 BUG_ON(done >= TX_RING_SIZE);
1610 for (idx = sky2->tx_cons; idx != done;
1611 idx = RING_NEXT(idx, TX_RING_SIZE)) {
1612 struct sky2_tx_le *le = sky2->tx_le + idx;
1613 struct tx_ring_info *re = sky2->tx_ring + idx;
1615 switch(le->opcode & ~HW_OWNER) {
1618 pci_unmap_single(pdev,
1619 pci_unmap_addr(re, mapaddr),
1620 pci_unmap_len(re, maplen),
1624 pci_unmap_page(pdev, pci_unmap_addr(re, mapaddr),
1625 pci_unmap_len(re, maplen),
1630 if (le->ctrl & EOP) {
1631 if (unlikely(netif_msg_tx_done(sky2)))
1632 printk(KERN_DEBUG "%s: tx done %u\n",
1635 sky2->net_stats.tx_packets++;
1636 sky2->net_stats.tx_bytes += re->skb->len;
1638 dev_kfree_skb_any(re->skb);
1639 sky2->tx_next = RING_NEXT(idx, TX_RING_SIZE);
1643 sky2->tx_cons = idx;
1646 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
1647 netif_wake_queue(dev);
1650 /* Cleanup all untransmitted buffers, assume transmitter not running */
1651 static void sky2_tx_clean(struct net_device *dev)
1653 struct sky2_port *sky2 = netdev_priv(dev);
1655 netif_tx_lock_bh(dev);
1656 sky2_tx_complete(sky2, sky2->tx_prod);
1657 netif_tx_unlock_bh(dev);
1660 /* Network shutdown */
1661 static int sky2_down(struct net_device *dev)
1663 struct sky2_port *sky2 = netdev_priv(dev);
1664 struct sky2_hw *hw = sky2->hw;
1665 unsigned port = sky2->port;
1669 /* Never really got started! */
1673 if (netif_msg_ifdown(sky2))
1674 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1676 /* Stop more packets from being queued */
1677 netif_stop_queue(dev);
1679 /* Disable port IRQ */
1680 imask = sky2_read32(hw, B0_IMSK);
1681 imask &= ~portirq_msk[port];
1682 sky2_write32(hw, B0_IMSK, imask);
1684 sky2_gmac_reset(hw, port);
1686 /* Stop transmitter */
1687 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1688 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1690 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1691 RB_RST_SET | RB_DIS_OP_MD);
1693 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1694 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1695 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1697 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1699 /* Workaround shared GMAC reset */
1700 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1701 && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1702 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1704 /* Disable Force Sync bit and Enable Alloc bit */
1705 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1706 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1708 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1709 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1710 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1712 /* Reset the PCI FIFO of the async Tx queue */
1713 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1714 BMU_RST_SET | BMU_FIFO_RST);
1716 /* Reset the Tx prefetch units */
1717 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1720 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1724 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1725 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1727 sky2_phy_power(hw, port, 0);
1729 netif_carrier_off(dev);
1731 /* turn off LED's */
1732 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1734 synchronize_irq(hw->pdev->irq);
1737 sky2_rx_clean(sky2);
1739 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1740 sky2->rx_le, sky2->rx_le_map);
1741 kfree(sky2->rx_ring);
1743 pci_free_consistent(hw->pdev,
1744 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1745 sky2->tx_le, sky2->tx_le_map);
1746 kfree(sky2->tx_ring);
1751 sky2->rx_ring = NULL;
1752 sky2->tx_ring = NULL;
1757 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1759 if (hw->flags & SKY2_HW_FIBRE_PHY)
1762 if (!(hw->flags & SKY2_HW_GIGABIT)) {
1763 if (aux & PHY_M_PS_SPEED_100)
1769 switch (aux & PHY_M_PS_SPEED_MSK) {
1770 case PHY_M_PS_SPEED_1000:
1772 case PHY_M_PS_SPEED_100:
1779 static void sky2_link_up(struct sky2_port *sky2)
1781 struct sky2_hw *hw = sky2->hw;
1782 unsigned port = sky2->port;
1784 static const char *fc_name[] = {
1792 reg = gma_read16(hw, port, GM_GP_CTRL);
1793 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1794 gma_write16(hw, port, GM_GP_CTRL, reg);
1796 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1798 netif_carrier_on(sky2->netdev);
1800 mod_timer(&hw->watchdog_timer, jiffies + 1);
1802 /* Turn on link LED */
1803 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1804 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1806 if (hw->flags & SKY2_HW_NEWER_PHY) {
1807 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
1808 u16 led = PHY_M_LEDC_LOS_CTRL(1); /* link active */
1810 switch(sky2->speed) {
1812 led |= PHY_M_LEDC_INIT_CTRL(7);
1816 led |= PHY_M_LEDC_STA1_CTRL(7);
1820 led |= PHY_M_LEDC_STA0_CTRL(7);
1824 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
1825 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, led);
1826 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
1829 if (netif_msg_link(sky2))
1830 printk(KERN_INFO PFX
1831 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1832 sky2->netdev->name, sky2->speed,
1833 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1834 fc_name[sky2->flow_status]);
1837 static void sky2_link_down(struct sky2_port *sky2)
1839 struct sky2_hw *hw = sky2->hw;
1840 unsigned port = sky2->port;
1843 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1845 reg = gma_read16(hw, port, GM_GP_CTRL);
1846 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1847 gma_write16(hw, port, GM_GP_CTRL, reg);
1849 netif_carrier_off(sky2->netdev);
1851 /* Turn on link LED */
1852 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1854 if (netif_msg_link(sky2))
1855 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
1857 sky2_phy_init(hw, port);
1860 static enum flow_control sky2_flow(int rx, int tx)
1863 return tx ? FC_BOTH : FC_RX;
1865 return tx ? FC_TX : FC_NONE;
1868 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
1870 struct sky2_hw *hw = sky2->hw;
1871 unsigned port = sky2->port;
1874 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
1875 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
1876 if (lpa & PHY_M_AN_RF) {
1877 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
1881 if (!(aux & PHY_M_PS_SPDUP_RES)) {
1882 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
1883 sky2->netdev->name);
1887 sky2->speed = sky2_phy_speed(hw, aux);
1888 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1890 /* Since the pause result bits seem to in different positions on
1891 * different chips. look at registers.
1893 if (hw->flags & SKY2_HW_FIBRE_PHY) {
1894 /* Shift for bits in fiber PHY */
1895 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
1896 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
1898 if (advert & ADVERTISE_1000XPAUSE)
1899 advert |= ADVERTISE_PAUSE_CAP;
1900 if (advert & ADVERTISE_1000XPSE_ASYM)
1901 advert |= ADVERTISE_PAUSE_ASYM;
1902 if (lpa & LPA_1000XPAUSE)
1903 lpa |= LPA_PAUSE_CAP;
1904 if (lpa & LPA_1000XPAUSE_ASYM)
1905 lpa |= LPA_PAUSE_ASYM;
1908 sky2->flow_status = FC_NONE;
1909 if (advert & ADVERTISE_PAUSE_CAP) {
1910 if (lpa & LPA_PAUSE_CAP)
1911 sky2->flow_status = FC_BOTH;
1912 else if (advert & ADVERTISE_PAUSE_ASYM)
1913 sky2->flow_status = FC_RX;
1914 } else if (advert & ADVERTISE_PAUSE_ASYM) {
1915 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
1916 sky2->flow_status = FC_TX;
1919 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000
1920 && !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
1921 sky2->flow_status = FC_NONE;
1923 if (sky2->flow_status & FC_TX)
1924 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
1926 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1931 /* Interrupt from PHY */
1932 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
1934 struct net_device *dev = hw->dev[port];
1935 struct sky2_port *sky2 = netdev_priv(dev);
1936 u16 istatus, phystat;
1938 if (!netif_running(dev))
1941 spin_lock(&sky2->phy_lock);
1942 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
1943 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
1945 if (netif_msg_intr(sky2))
1946 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
1947 sky2->netdev->name, istatus, phystat);
1949 if (sky2->autoneg == AUTONEG_ENABLE && (istatus & PHY_M_IS_AN_COMPL)) {
1950 if (sky2_autoneg_done(sky2, phystat) == 0)
1955 if (istatus & PHY_M_IS_LSP_CHANGE)
1956 sky2->speed = sky2_phy_speed(hw, phystat);
1958 if (istatus & PHY_M_IS_DUP_CHANGE)
1960 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1962 if (istatus & PHY_M_IS_LST_CHANGE) {
1963 if (phystat & PHY_M_PS_LINK_UP)
1966 sky2_link_down(sky2);
1969 spin_unlock(&sky2->phy_lock);
1972 /* Transmit timeout is only called if we are running, carrier is up
1973 * and tx queue is full (stopped).
1975 static void sky2_tx_timeout(struct net_device *dev)
1977 struct sky2_port *sky2 = netdev_priv(dev);
1978 struct sky2_hw *hw = sky2->hw;
1980 if (netif_msg_timer(sky2))
1981 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
1983 printk(KERN_DEBUG PFX "%s: transmit ring %u .. %u report=%u done=%u\n",
1984 dev->name, sky2->tx_cons, sky2->tx_prod,
1985 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
1986 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
1988 /* can't restart safely under softirq */
1989 schedule_work(&hw->restart_work);
1992 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
1994 struct sky2_port *sky2 = netdev_priv(dev);
1995 struct sky2_hw *hw = sky2->hw;
1996 unsigned port = sky2->port;
2001 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2004 if (new_mtu > ETH_DATA_LEN &&
2005 (hw->chip_id == CHIP_ID_YUKON_FE ||
2006 hw->chip_id == CHIP_ID_YUKON_FE_P))
2009 if (!netif_running(dev)) {
2014 imask = sky2_read32(hw, B0_IMSK);
2015 sky2_write32(hw, B0_IMSK, 0);
2017 dev->trans_start = jiffies; /* prevent tx timeout */
2018 netif_stop_queue(dev);
2019 netif_poll_disable(hw->dev[0]);
2021 synchronize_irq(hw->pdev->irq);
2023 if (sky2_read8(hw, B2_E_0) == 0)
2024 sky2_set_tx_stfwd(hw, port);
2026 ctl = gma_read16(hw, port, GM_GP_CTRL);
2027 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2029 sky2_rx_clean(sky2);
2033 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
2034 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
2036 if (dev->mtu > ETH_DATA_LEN)
2037 mode |= GM_SMOD_JUMBO_ENA;
2039 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2041 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2043 err = sky2_rx_start(sky2);
2044 sky2_write32(hw, B0_IMSK, imask);
2049 gma_write16(hw, port, GM_GP_CTRL, ctl);
2051 netif_poll_enable(hw->dev[0]);
2052 netif_wake_queue(dev);
2058 /* For small just reuse existing skb for next receive */
2059 static struct sk_buff *receive_copy(struct sky2_port *sky2,
2060 const struct rx_ring_info *re,
2063 struct sk_buff *skb;
2065 skb = netdev_alloc_skb(sky2->netdev, length + 2);
2067 skb_reserve(skb, 2);
2068 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2069 length, PCI_DMA_FROMDEVICE);
2070 skb_copy_from_linear_data(re->skb, skb->data, length);
2071 skb->ip_summed = re->skb->ip_summed;
2072 skb->csum = re->skb->csum;
2073 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2074 length, PCI_DMA_FROMDEVICE);
2075 re->skb->ip_summed = CHECKSUM_NONE;
2076 skb_put(skb, length);
2081 /* Adjust length of skb with fragments to match received data */
2082 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2083 unsigned int length)
2088 /* put header into skb */
2089 size = min(length, hdr_space);
2094 num_frags = skb_shinfo(skb)->nr_frags;
2095 for (i = 0; i < num_frags; i++) {
2096 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2099 /* don't need this page */
2100 __free_page(frag->page);
2101 --skb_shinfo(skb)->nr_frags;
2103 size = min(length, (unsigned) PAGE_SIZE);
2106 skb->data_len += size;
2107 skb->truesize += size;
2114 /* Normal packet - take skb from ring element and put in a new one */
2115 static struct sk_buff *receive_new(struct sky2_port *sky2,
2116 struct rx_ring_info *re,
2117 unsigned int length)
2119 struct sk_buff *skb, *nskb;
2120 unsigned hdr_space = sky2->rx_data_size;
2122 /* Don't be tricky about reusing pages (yet) */
2123 nskb = sky2_rx_alloc(sky2);
2124 if (unlikely(!nskb))
2128 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2130 prefetch(skb->data);
2132 sky2_rx_map_skb(sky2->hw->pdev, re, hdr_space);
2134 if (skb_shinfo(skb)->nr_frags)
2135 skb_put_frags(skb, hdr_space, length);
2137 skb_put(skb, length);
2142 * Receive one packet.
2143 * For larger packets, get new buffer.
2145 static struct sk_buff *sky2_receive(struct net_device *dev,
2146 u16 length, u32 status)
2148 struct sky2_port *sky2 = netdev_priv(dev);
2149 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2150 struct sk_buff *skb = NULL;
2151 u16 count = (status & GMR_FS_LEN) >> 16;
2153 #ifdef SKY2_VLAN_TAG_USED
2154 /* Account for vlan tag */
2155 if (sky2->vlgrp && (status & GMR_FS_VLAN))
2159 if (unlikely(netif_msg_rx_status(sky2)))
2160 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
2161 dev->name, sky2->rx_next, status, length);
2163 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2164 prefetch(sky2->rx_ring + sky2->rx_next);
2166 if (length < ETH_ZLEN || length > sky2->rx_data_size)
2169 /* This chip has hardware problems that generates bogus status.
2170 * So do only marginal checking and expect higher level protocols
2171 * to handle crap frames.
2173 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2174 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2178 if (status & GMR_FS_ANY_ERR)
2181 if (!(status & GMR_FS_RX_OK))
2184 /* if length reported by DMA does not match PHY, packet was truncated */
2185 if (length != count)
2189 if (length < copybreak)
2190 skb = receive_copy(sky2, re, length);
2192 skb = receive_new(sky2, re, length);
2194 sky2_rx_submit(sky2, re);
2199 /* Truncation of overlength packets
2200 causes PHY length to not match MAC length */
2201 ++sky2->net_stats.rx_length_errors;
2202 if (netif_msg_rx_err(sky2) && net_ratelimit())
2203 pr_info(PFX "%s: rx length error: status %#x length %d\n",
2204 dev->name, status, length);
2208 ++sky2->net_stats.rx_errors;
2209 if (status & GMR_FS_RX_FF_OV) {
2210 sky2->net_stats.rx_over_errors++;
2214 if (netif_msg_rx_err(sky2) && net_ratelimit())
2215 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
2216 dev->name, status, length);
2218 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
2219 sky2->net_stats.rx_length_errors++;
2220 if (status & GMR_FS_FRAGMENT)
2221 sky2->net_stats.rx_frame_errors++;
2222 if (status & GMR_FS_CRC_ERR)
2223 sky2->net_stats.rx_crc_errors++;
2228 /* Transmit complete */
2229 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2231 struct sky2_port *sky2 = netdev_priv(dev);
2233 if (netif_running(dev)) {
2235 sky2_tx_complete(sky2, last);
2236 netif_tx_unlock(dev);
2240 /* Process status response ring */
2241 static int sky2_status_intr(struct sky2_hw *hw, int to_do)
2244 unsigned rx[2] = { 0, 0 };
2245 u16 hwidx = sky2_read16(hw, STAT_PUT_IDX);
2249 while (hw->st_idx != hwidx) {
2250 struct sky2_port *sky2;
2251 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2252 unsigned port = le->css & CSS_LINK_BIT;
2253 struct net_device *dev;
2254 struct sk_buff *skb;
2258 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
2260 dev = hw->dev[port];
2261 sky2 = netdev_priv(dev);
2262 length = le16_to_cpu(le->length);
2263 status = le32_to_cpu(le->status);
2265 switch (le->opcode & ~HW_OWNER) {
2268 skb = sky2_receive(dev, length, status);
2269 if (unlikely(!skb)) {
2270 sky2->net_stats.rx_dropped++;
2274 /* This chip reports checksum status differently */
2275 if (hw->flags & SKY2_HW_NEW_LE) {
2276 if (sky2->rx_csum &&
2277 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2278 (le->css & CSS_TCPUDPCSOK))
2279 skb->ip_summed = CHECKSUM_UNNECESSARY;
2281 skb->ip_summed = CHECKSUM_NONE;
2284 skb->protocol = eth_type_trans(skb, dev);
2285 sky2->net_stats.rx_packets++;
2286 sky2->net_stats.rx_bytes += skb->len;
2287 dev->last_rx = jiffies;
2289 #ifdef SKY2_VLAN_TAG_USED
2290 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
2291 vlan_hwaccel_receive_skb(skb,
2293 be16_to_cpu(sky2->rx_tag));
2296 netif_receive_skb(skb);
2298 /* Stop after net poll weight */
2299 if (++work_done >= to_do)
2303 #ifdef SKY2_VLAN_TAG_USED
2305 sky2->rx_tag = length;
2309 sky2->rx_tag = length;
2316 /* If this happens then driver assuming wrong format */
2317 if (unlikely(hw->flags & SKY2_HW_NEW_LE)) {
2318 if (net_ratelimit())
2319 printk(KERN_NOTICE "%s: unexpected"
2320 " checksum status\n",
2325 /* Both checksum counters are programmed to start at
2326 * the same offset, so unless there is a problem they
2327 * should match. This failure is an early indication that
2328 * hardware receive checksumming won't work.
2330 if (likely(status >> 16 == (status & 0xffff))) {
2331 skb = sky2->rx_ring[sky2->rx_next].skb;
2332 skb->ip_summed = CHECKSUM_COMPLETE;
2333 skb->csum = status & 0xffff;
2335 printk(KERN_NOTICE PFX "%s: hardware receive "
2336 "checksum problem (status = %#x)\n",
2339 sky2_write32(sky2->hw,
2340 Q_ADDR(rxqaddr[port], Q_CSR),
2346 /* TX index reports status for both ports */
2347 BUILD_BUG_ON(TX_RING_SIZE > 0x1000);
2348 sky2_tx_done(hw->dev[0], status & 0xfff);
2350 sky2_tx_done(hw->dev[1],
2351 ((status >> 24) & 0xff)
2352 | (u16)(length & 0xf) << 8);
2356 if (net_ratelimit())
2357 printk(KERN_WARNING PFX
2358 "unknown status opcode 0x%x\n", le->opcode);
2362 /* Fully processed status ring so clear irq */
2363 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2367 sky2_rx_update(netdev_priv(hw->dev[0]), Q_R1);
2370 sky2_rx_update(netdev_priv(hw->dev[1]), Q_R2);
2375 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2377 struct net_device *dev = hw->dev[port];
2379 if (net_ratelimit())
2380 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
2383 if (status & Y2_IS_PAR_RD1) {
2384 if (net_ratelimit())
2385 printk(KERN_ERR PFX "%s: ram data read parity error\n",
2388 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2391 if (status & Y2_IS_PAR_WR1) {
2392 if (net_ratelimit())
2393 printk(KERN_ERR PFX "%s: ram data write parity error\n",
2396 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2399 if (status & Y2_IS_PAR_MAC1) {
2400 if (net_ratelimit())
2401 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
2402 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2405 if (status & Y2_IS_PAR_RX1) {
2406 if (net_ratelimit())
2407 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
2408 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2411 if (status & Y2_IS_TCP_TXA1) {
2412 if (net_ratelimit())
2413 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
2415 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2419 static void sky2_hw_intr(struct sky2_hw *hw)
2421 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2423 if (status & Y2_IS_TIST_OV)
2424 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2426 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2429 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2430 if (net_ratelimit())
2431 dev_err(&hw->pdev->dev, "PCI hardware error (0x%x)\n",
2434 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2435 sky2_pci_write16(hw, PCI_STATUS,
2436 pci_err | PCI_STATUS_ERROR_BITS);
2437 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2440 if (status & Y2_IS_PCI_EXP) {
2441 /* PCI-Express uncorrectable Error occurred */
2444 pex_err = sky2_pci_read32(hw, PEX_UNC_ERR_STAT);
2446 if (net_ratelimit())
2447 dev_err(&hw->pdev->dev, "PCI Express error (0x%x)\n",
2450 /* clear the interrupt */
2451 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2452 sky2_pci_write32(hw, PEX_UNC_ERR_STAT,
2454 sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2456 if (pex_err & PEX_FATAL_ERRORS) {
2457 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2458 hwmsk &= ~Y2_IS_PCI_EXP;
2459 sky2_write32(hw, B0_HWE_IMSK, hwmsk);
2463 if (status & Y2_HWE_L1_MASK)
2464 sky2_hw_error(hw, 0, status);
2466 if (status & Y2_HWE_L1_MASK)
2467 sky2_hw_error(hw, 1, status);
2470 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2472 struct net_device *dev = hw->dev[port];
2473 struct sky2_port *sky2 = netdev_priv(dev);
2474 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2476 if (netif_msg_intr(sky2))
2477 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2480 if (status & GM_IS_RX_CO_OV)
2481 gma_read16(hw, port, GM_RX_IRQ_SRC);
2483 if (status & GM_IS_TX_CO_OV)
2484 gma_read16(hw, port, GM_TX_IRQ_SRC);
2486 if (status & GM_IS_RX_FF_OR) {
2487 ++sky2->net_stats.rx_fifo_errors;
2488 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2491 if (status & GM_IS_TX_FF_UR) {
2492 ++sky2->net_stats.tx_fifo_errors;
2493 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2497 /* This should never happen it is a bug. */
2498 static void sky2_le_error(struct sky2_hw *hw, unsigned port,
2499 u16 q, unsigned ring_size)
2501 struct net_device *dev = hw->dev[port];
2502 struct sky2_port *sky2 = netdev_priv(dev);
2504 const u64 *le = (q == Q_R1 || q == Q_R2)
2505 ? (u64 *) sky2->rx_le : (u64 *) sky2->tx_le;
2507 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2508 printk(KERN_ERR PFX "%s: descriptor error q=%#x get=%u [%llx] put=%u\n",
2509 dev->name, (unsigned) q, idx, (unsigned long long) le[idx],
2510 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2512 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2515 static int sky2_rx_hung(struct net_device *dev)
2517 struct sky2_port *sky2 = netdev_priv(dev);
2518 struct sky2_hw *hw = sky2->hw;
2519 unsigned port = sky2->port;
2520 unsigned rxq = rxqaddr[port];
2521 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2522 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2523 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2524 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2526 /* If idle and MAC or PCI is stuck */
2527 if (sky2->check.last == dev->last_rx &&
2528 ((mac_rp == sky2->check.mac_rp &&
2529 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2530 /* Check if the PCI RX hang */
2531 (fifo_rp == sky2->check.fifo_rp &&
2532 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2533 printk(KERN_DEBUG PFX "%s: hung mac %d:%d fifo %d (%d:%d)\n",
2534 dev->name, mac_lev, mac_rp, fifo_lev, fifo_rp,
2535 sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2538 sky2->check.last = dev->last_rx;
2539 sky2->check.mac_rp = mac_rp;
2540 sky2->check.mac_lev = mac_lev;
2541 sky2->check.fifo_rp = fifo_rp;
2542 sky2->check.fifo_lev = fifo_lev;
2547 static void sky2_watchdog(unsigned long arg)
2549 struct sky2_hw *hw = (struct sky2_hw *) arg;
2550 struct net_device *dev;
2552 /* Check for lost IRQ once a second */
2553 if (sky2_read32(hw, B0_ISRC)) {
2555 if (__netif_rx_schedule_prep(dev))
2556 __netif_rx_schedule(dev);
2560 for (i = 0; i < hw->ports; i++) {
2562 if (!netif_running(dev))
2566 /* For chips with Rx FIFO, check if stuck */
2567 if ((hw->flags & SKY2_HW_FIFO_HANG_CHECK) &&
2568 sky2_rx_hung(dev)) {
2569 pr_info(PFX "%s: receiver hang detected\n",
2571 schedule_work(&hw->restart_work);
2580 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
2583 /* Hardware/software error handling */
2584 static void sky2_err_intr(struct sky2_hw *hw, u32 status)
2586 if (net_ratelimit())
2587 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
2589 if (status & Y2_IS_HW_ERR)
2592 if (status & Y2_IS_IRQ_MAC1)
2593 sky2_mac_intr(hw, 0);
2595 if (status & Y2_IS_IRQ_MAC2)
2596 sky2_mac_intr(hw, 1);
2598 if (status & Y2_IS_CHK_RX1)
2599 sky2_le_error(hw, 0, Q_R1, RX_LE_SIZE);
2601 if (status & Y2_IS_CHK_RX2)
2602 sky2_le_error(hw, 1, Q_R2, RX_LE_SIZE);
2604 if (status & Y2_IS_CHK_TXA1)
2605 sky2_le_error(hw, 0, Q_XA1, TX_RING_SIZE);
2607 if (status & Y2_IS_CHK_TXA2)
2608 sky2_le_error(hw, 1, Q_XA2, TX_RING_SIZE);
2611 static int sky2_poll(struct net_device *dev0, int *budget)
2613 struct sky2_hw *hw = ((struct sky2_port *) netdev_priv(dev0))->hw;
2615 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2617 if (unlikely(status & Y2_IS_ERROR))
2618 sky2_err_intr(hw, status);
2620 if (status & Y2_IS_IRQ_PHY1)
2621 sky2_phy_intr(hw, 0);
2623 if (status & Y2_IS_IRQ_PHY2)
2624 sky2_phy_intr(hw, 1);
2626 work_done = sky2_status_intr(hw, min(dev0->quota, *budget));
2627 *budget -= work_done;
2628 dev0->quota -= work_done;
2631 if (hw->st_idx != sky2_read16(hw, STAT_PUT_IDX))
2634 /* Bug/Errata workaround?
2635 * Need to kick the TX irq moderation timer.
2637 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_START) {
2638 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
2639 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2641 netif_rx_complete(dev0);
2643 sky2_read32(hw, B0_Y2_SP_LISR);
2647 static irqreturn_t sky2_intr(int irq, void *dev_id)
2649 struct sky2_hw *hw = dev_id;
2650 struct net_device *dev0 = hw->dev[0];
2653 /* Reading this mask interrupts as side effect */
2654 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2655 if (status == 0 || status == ~0)
2658 prefetch(&hw->st_le[hw->st_idx]);
2659 if (likely(__netif_rx_schedule_prep(dev0)))
2660 __netif_rx_schedule(dev0);
2665 #ifdef CONFIG_NET_POLL_CONTROLLER
2666 static void sky2_netpoll(struct net_device *dev)
2668 struct sky2_port *sky2 = netdev_priv(dev);
2669 struct net_device *dev0 = sky2->hw->dev[0];
2671 if (netif_running(dev) && __netif_rx_schedule_prep(dev0))
2672 __netif_rx_schedule(dev0);
2676 /* Chip internal frequency for clock calculations */
2677 static u32 sky2_mhz(const struct sky2_hw *hw)
2679 switch (hw->chip_id) {
2680 case CHIP_ID_YUKON_EC:
2681 case CHIP_ID_YUKON_EC_U:
2682 case CHIP_ID_YUKON_EX:
2685 case CHIP_ID_YUKON_FE:
2688 case CHIP_ID_YUKON_FE_P:
2691 case CHIP_ID_YUKON_XL:
2699 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2701 return sky2_mhz(hw) * us;
2704 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2706 return clk / sky2_mhz(hw);
2710 static int __devinit sky2_init(struct sky2_hw *hw)
2714 /* Enable all clocks */
2715 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
2717 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2719 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2720 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2722 switch(hw->chip_id) {
2723 case CHIP_ID_YUKON_XL:
2724 hw->flags = SKY2_HW_GIGABIT
2725 | SKY2_HW_NEWER_PHY;
2726 if (hw->chip_rev < 3)
2727 hw->flags |= SKY2_HW_FIFO_HANG_CHECK;
2731 case CHIP_ID_YUKON_EC_U:
2732 hw->flags = SKY2_HW_GIGABIT
2734 | SKY2_HW_ADV_POWER_CTL;
2737 case CHIP_ID_YUKON_EX:
2738 hw->flags = SKY2_HW_GIGABIT
2741 | SKY2_HW_ADV_POWER_CTL;
2743 /* New transmit checksum */
2744 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
2745 hw->flags |= SKY2_HW_AUTO_TX_SUM;
2748 case CHIP_ID_YUKON_EC:
2749 /* This rev is really old, and requires untested workarounds */
2750 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
2751 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
2754 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_FIFO_HANG_CHECK;
2757 case CHIP_ID_YUKON_FE:
2760 case CHIP_ID_YUKON_FE_P:
2761 hw->flags = SKY2_HW_NEWER_PHY
2763 | SKY2_HW_AUTO_TX_SUM
2764 | SKY2_HW_ADV_POWER_CTL;
2767 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
2772 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
2773 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
2774 hw->flags |= SKY2_HW_FIBRE_PHY;
2778 t8 = sky2_read8(hw, B2_Y2_HW_RES);
2779 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
2780 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2787 static void sky2_reset(struct sky2_hw *hw)
2793 if (hw->chip_id == CHIP_ID_YUKON_EX) {
2794 status = sky2_read16(hw, HCU_CCSR);
2795 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
2796 HCU_CCSR_UC_STATE_MSK);
2797 sky2_write16(hw, HCU_CCSR, status);
2799 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2800 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2803 sky2_write8(hw, B0_CTST, CS_RST_SET);
2804 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2806 /* clear PCI errors, if any */
2807 status = sky2_pci_read16(hw, PCI_STATUS);
2809 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2810 sky2_pci_write16(hw, PCI_STATUS, status | PCI_STATUS_ERROR_BITS);
2813 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2815 /* clear any PEX errors */
2816 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
2817 sky2_pci_write32(hw, PEX_UNC_ERR_STAT, 0xffffffffUL);
2822 for (i = 0; i < hw->ports; i++) {
2823 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2824 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2826 if (hw->chip_id == CHIP_ID_YUKON_EX)
2827 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
2828 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
2832 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2834 /* Clear I2C IRQ noise */
2835 sky2_write32(hw, B2_I2C_IRQ, 1);
2837 /* turn off hardware timer (unused) */
2838 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2839 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
2841 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
2843 /* Turn off descriptor polling */
2844 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
2846 /* Turn off receive timestamp */
2847 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
2848 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2850 /* enable the Tx Arbiters */
2851 for (i = 0; i < hw->ports; i++)
2852 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
2854 /* Initialize ram interface */
2855 for (i = 0; i < hw->ports; i++) {
2856 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
2858 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
2859 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
2860 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
2861 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
2862 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
2863 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
2864 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
2865 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
2866 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
2867 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
2868 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
2869 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
2872 sky2_write32(hw, B0_HWE_IMSK, Y2_HWE_ALL_MASK);
2874 for (i = 0; i < hw->ports; i++)
2875 sky2_gmac_reset(hw, i);
2877 memset(hw->st_le, 0, STATUS_LE_BYTES);
2880 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
2881 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
2883 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
2884 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
2886 /* Set the list last index */
2887 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
2889 sky2_write16(hw, STAT_TX_IDX_TH, 10);
2890 sky2_write8(hw, STAT_FIFO_WM, 16);
2892 /* set Status-FIFO ISR watermark */
2893 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
2894 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
2896 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
2898 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
2899 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
2900 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
2902 /* enable status unit */
2903 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
2905 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2906 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2907 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2910 static void sky2_restart(struct work_struct *work)
2912 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
2913 struct net_device *dev;
2917 sky2_write32(hw, B0_IMSK, 0);
2918 sky2_read32(hw, B0_IMSK);
2920 netif_poll_disable(hw->dev[0]);
2922 for (i = 0; i < hw->ports; i++) {
2924 if (netif_running(dev))
2929 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
2930 netif_poll_enable(hw->dev[0]);
2932 for (i = 0; i < hw->ports; i++) {
2934 if (netif_running(dev)) {
2937 printk(KERN_INFO PFX "%s: could not restart %d\n",
2947 static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
2949 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
2952 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2954 const struct sky2_port *sky2 = netdev_priv(dev);
2956 wol->supported = sky2_wol_supported(sky2->hw);
2957 wol->wolopts = sky2->wol;
2960 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2962 struct sky2_port *sky2 = netdev_priv(dev);
2963 struct sky2_hw *hw = sky2->hw;
2965 if (wol->wolopts & ~sky2_wol_supported(sky2->hw))
2968 sky2->wol = wol->wolopts;
2970 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
2971 hw->chip_id == CHIP_ID_YUKON_EX ||
2972 hw->chip_id == CHIP_ID_YUKON_FE_P)
2973 sky2_write32(hw, B0_CTST, sky2->wol
2974 ? Y2_HW_WOL_ON : Y2_HW_WOL_OFF);
2976 if (!netif_running(dev))
2977 sky2_wol_init(sky2);
2981 static u32 sky2_supported_modes(const struct sky2_hw *hw)
2983 if (sky2_is_copper(hw)) {
2984 u32 modes = SUPPORTED_10baseT_Half
2985 | SUPPORTED_10baseT_Full
2986 | SUPPORTED_100baseT_Half
2987 | SUPPORTED_100baseT_Full
2988 | SUPPORTED_Autoneg | SUPPORTED_TP;
2990 if (hw->flags & SKY2_HW_GIGABIT)
2991 modes |= SUPPORTED_1000baseT_Half
2992 | SUPPORTED_1000baseT_Full;
2995 return SUPPORTED_1000baseT_Half
2996 | SUPPORTED_1000baseT_Full
3001 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3003 struct sky2_port *sky2 = netdev_priv(dev);
3004 struct sky2_hw *hw = sky2->hw;
3006 ecmd->transceiver = XCVR_INTERNAL;
3007 ecmd->supported = sky2_supported_modes(hw);
3008 ecmd->phy_address = PHY_ADDR_MARV;
3009 if (sky2_is_copper(hw)) {
3010 ecmd->port = PORT_TP;
3011 ecmd->speed = sky2->speed;
3013 ecmd->speed = SPEED_1000;
3014 ecmd->port = PORT_FIBRE;
3017 ecmd->advertising = sky2->advertising;
3018 ecmd->autoneg = sky2->autoneg;
3019 ecmd->duplex = sky2->duplex;
3023 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3025 struct sky2_port *sky2 = netdev_priv(dev);
3026 const struct sky2_hw *hw = sky2->hw;
3027 u32 supported = sky2_supported_modes(hw);
3029 if (ecmd->autoneg == AUTONEG_ENABLE) {
3030 ecmd->advertising = supported;
3036 switch (ecmd->speed) {
3038 if (ecmd->duplex == DUPLEX_FULL)
3039 setting = SUPPORTED_1000baseT_Full;
3040 else if (ecmd->duplex == DUPLEX_HALF)
3041 setting = SUPPORTED_1000baseT_Half;
3046 if (ecmd->duplex == DUPLEX_FULL)
3047 setting = SUPPORTED_100baseT_Full;
3048 else if (ecmd->duplex == DUPLEX_HALF)
3049 setting = SUPPORTED_100baseT_Half;
3055 if (ecmd->duplex == DUPLEX_FULL)
3056 setting = SUPPORTED_10baseT_Full;
3057 else if (ecmd->duplex == DUPLEX_HALF)
3058 setting = SUPPORTED_10baseT_Half;
3066 if ((setting & supported) == 0)
3069 sky2->speed = ecmd->speed;
3070 sky2->duplex = ecmd->duplex;
3073 sky2->autoneg = ecmd->autoneg;
3074 sky2->advertising = ecmd->advertising;
3076 if (netif_running(dev)) {
3077 sky2_phy_reinit(sky2);
3078 sky2_set_multicast(dev);
3084 static void sky2_get_drvinfo(struct net_device *dev,
3085 struct ethtool_drvinfo *info)
3087 struct sky2_port *sky2 = netdev_priv(dev);
3089 strcpy(info->driver, DRV_NAME);
3090 strcpy(info->version, DRV_VERSION);
3091 strcpy(info->fw_version, "N/A");
3092 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
3095 static const struct sky2_stat {
3096 char name[ETH_GSTRING_LEN];
3099 { "tx_bytes", GM_TXO_OK_HI },
3100 { "rx_bytes", GM_RXO_OK_HI },
3101 { "tx_broadcast", GM_TXF_BC_OK },
3102 { "rx_broadcast", GM_RXF_BC_OK },
3103 { "tx_multicast", GM_TXF_MC_OK },
3104 { "rx_multicast", GM_RXF_MC_OK },
3105 { "tx_unicast", GM_TXF_UC_OK },
3106 { "rx_unicast", GM_RXF_UC_OK },
3107 { "tx_mac_pause", GM_TXF_MPAUSE },
3108 { "rx_mac_pause", GM_RXF_MPAUSE },
3109 { "collisions", GM_TXF_COL },
3110 { "late_collision",GM_TXF_LAT_COL },
3111 { "aborted", GM_TXF_ABO_COL },
3112 { "single_collisions", GM_TXF_SNG_COL },
3113 { "multi_collisions", GM_TXF_MUL_COL },
3115 { "rx_short", GM_RXF_SHT },
3116 { "rx_runt", GM_RXE_FRAG },
3117 { "rx_64_byte_packets", GM_RXF_64B },
3118 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3119 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3120 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3121 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3122 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3123 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3124 { "rx_too_long", GM_RXF_LNG_ERR },
3125 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3126 { "rx_jabber", GM_RXF_JAB_PKT },
3127 { "rx_fcs_error", GM_RXF_FCS_ERR },
3129 { "tx_64_byte_packets", GM_TXF_64B },
3130 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3131 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3132 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3133 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3134 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3135 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3136 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3139 static u32 sky2_get_rx_csum(struct net_device *dev)
3141 struct sky2_port *sky2 = netdev_priv(dev);
3143 return sky2->rx_csum;
3146 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
3148 struct sky2_port *sky2 = netdev_priv(dev);
3150 sky2->rx_csum = data;
3152 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
3153 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
3158 static u32 sky2_get_msglevel(struct net_device *netdev)
3160 struct sky2_port *sky2 = netdev_priv(netdev);
3161 return sky2->msg_enable;
3164 static int sky2_nway_reset(struct net_device *dev)
3166 struct sky2_port *sky2 = netdev_priv(dev);
3168 if (!netif_running(dev) || sky2->autoneg != AUTONEG_ENABLE)
3171 sky2_phy_reinit(sky2);
3172 sky2_set_multicast(dev);
3177 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3179 struct sky2_hw *hw = sky2->hw;
3180 unsigned port = sky2->port;
3183 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
3184 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
3185 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
3186 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
3188 for (i = 2; i < count; i++)
3189 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
3192 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3194 struct sky2_port *sky2 = netdev_priv(netdev);
3195 sky2->msg_enable = value;
3198 static int sky2_get_stats_count(struct net_device *dev)
3200 return ARRAY_SIZE(sky2_stats);
3203 static void sky2_get_ethtool_stats(struct net_device *dev,
3204 struct ethtool_stats *stats, u64 * data)
3206 struct sky2_port *sky2 = netdev_priv(dev);
3208 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3211 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3215 switch (stringset) {
3217 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3218 memcpy(data + i * ETH_GSTRING_LEN,
3219 sky2_stats[i].name, ETH_GSTRING_LEN);
3224 static struct net_device_stats *sky2_get_stats(struct net_device *dev)
3226 struct sky2_port *sky2 = netdev_priv(dev);
3227 return &sky2->net_stats;
3230 static int sky2_set_mac_address(struct net_device *dev, void *p)
3232 struct sky2_port *sky2 = netdev_priv(dev);
3233 struct sky2_hw *hw = sky2->hw;
3234 unsigned port = sky2->port;
3235 const struct sockaddr *addr = p;
3237 if (!is_valid_ether_addr(addr->sa_data))
3238 return -EADDRNOTAVAIL;
3240 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3241 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3242 dev->dev_addr, ETH_ALEN);
3243 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3244 dev->dev_addr, ETH_ALEN);
3246 /* virtual address for data */
3247 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3249 /* physical address: used for pause frames */
3250 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3255 static void inline sky2_add_filter(u8 filter[8], const u8 *addr)
3259 bit = ether_crc(ETH_ALEN, addr) & 63;
3260 filter[bit >> 3] |= 1 << (bit & 7);
3263 static void sky2_set_multicast(struct net_device *dev)
3265 struct sky2_port *sky2 = netdev_priv(dev);
3266 struct sky2_hw *hw = sky2->hw;
3267 unsigned port = sky2->port;
3268 struct dev_mc_list *list = dev->mc_list;
3272 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3274 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3275 memset(filter, 0, sizeof(filter));
3277 reg = gma_read16(hw, port, GM_RX_CTRL);
3278 reg |= GM_RXCR_UCF_ENA;
3280 if (dev->flags & IFF_PROMISC) /* promiscuous */
3281 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3282 else if (dev->flags & IFF_ALLMULTI)
3283 memset(filter, 0xff, sizeof(filter));
3284 else if (dev->mc_count == 0 && !rx_pause)
3285 reg &= ~GM_RXCR_MCF_ENA;
3288 reg |= GM_RXCR_MCF_ENA;
3291 sky2_add_filter(filter, pause_mc_addr);
3293 for (i = 0; list && i < dev->mc_count; i++, list = list->next)
3294 sky2_add_filter(filter, list->dmi_addr);
3297 gma_write16(hw, port, GM_MC_ADDR_H1,
3298 (u16) filter[0] | ((u16) filter[1] << 8));
3299 gma_write16(hw, port, GM_MC_ADDR_H2,
3300 (u16) filter[2] | ((u16) filter[3] << 8));
3301 gma_write16(hw, port, GM_MC_ADDR_H3,
3302 (u16) filter[4] | ((u16) filter[5] << 8));
3303 gma_write16(hw, port, GM_MC_ADDR_H4,
3304 (u16) filter[6] | ((u16) filter[7] << 8));
3306 gma_write16(hw, port, GM_RX_CTRL, reg);
3309 /* Can have one global because blinking is controlled by
3310 * ethtool and that is always under RTNL mutex
3312 static void sky2_led(struct sky2_hw *hw, unsigned port, int on)
3316 switch (hw->chip_id) {
3317 case CHIP_ID_YUKON_XL:
3318 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3319 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3320 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3321 on ? (PHY_M_LEDC_LOS_CTRL(1) |
3322 PHY_M_LEDC_INIT_CTRL(7) |
3323 PHY_M_LEDC_STA1_CTRL(7) |
3324 PHY_M_LEDC_STA0_CTRL(7))
3327 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3331 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
3332 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3333 on ? PHY_M_LED_ALL : 0);
3337 /* blink LED's for finding board */
3338 static int sky2_phys_id(struct net_device *dev, u32 data)
3340 struct sky2_port *sky2 = netdev_priv(dev);
3341 struct sky2_hw *hw = sky2->hw;
3342 unsigned port = sky2->port;
3343 u16 ledctrl, ledover = 0;
3348 if (!data || data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ))
3349 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT);
3353 /* save initial values */
3354 spin_lock_bh(&sky2->phy_lock);
3355 if (hw->chip_id == CHIP_ID_YUKON_XL) {
3356 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3357 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3358 ledctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
3359 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3361 ledctrl = gm_phy_read(hw, port, PHY_MARV_LED_CTRL);
3362 ledover = gm_phy_read(hw, port, PHY_MARV_LED_OVER);
3366 while (!interrupted && ms > 0) {
3367 sky2_led(hw, port, onoff);
3370 spin_unlock_bh(&sky2->phy_lock);
3371 interrupted = msleep_interruptible(250);
3372 spin_lock_bh(&sky2->phy_lock);
3377 /* resume regularly scheduled programming */
3378 if (hw->chip_id == CHIP_ID_YUKON_XL) {
3379 u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3380 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3381 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ledctrl);
3382 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3384 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
3385 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
3387 spin_unlock_bh(&sky2->phy_lock);
3392 static void sky2_get_pauseparam(struct net_device *dev,
3393 struct ethtool_pauseparam *ecmd)
3395 struct sky2_port *sky2 = netdev_priv(dev);
3397 switch (sky2->flow_mode) {
3399 ecmd->tx_pause = ecmd->rx_pause = 0;
3402 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
3405 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
3408 ecmd->tx_pause = ecmd->rx_pause = 1;
3411 ecmd->autoneg = sky2->autoneg;
3414 static int sky2_set_pauseparam(struct net_device *dev,
3415 struct ethtool_pauseparam *ecmd)
3417 struct sky2_port *sky2 = netdev_priv(dev);
3419 sky2->autoneg = ecmd->autoneg;
3420 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
3422 if (netif_running(dev))
3423 sky2_phy_reinit(sky2);
3428 static int sky2_get_coalesce(struct net_device *dev,
3429 struct ethtool_coalesce *ecmd)
3431 struct sky2_port *sky2 = netdev_priv(dev);
3432 struct sky2_hw *hw = sky2->hw;
3434 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
3435 ecmd->tx_coalesce_usecs = 0;
3437 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
3438 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
3440 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
3442 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
3443 ecmd->rx_coalesce_usecs = 0;
3445 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
3446 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
3448 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
3450 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
3451 ecmd->rx_coalesce_usecs_irq = 0;
3453 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
3454 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
3457 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
3462 /* Note: this affect both ports */
3463 static int sky2_set_coalesce(struct net_device *dev,
3464 struct ethtool_coalesce *ecmd)
3466 struct sky2_port *sky2 = netdev_priv(dev);
3467 struct sky2_hw *hw = sky2->hw;
3468 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
3470 if (ecmd->tx_coalesce_usecs > tmax ||
3471 ecmd->rx_coalesce_usecs > tmax ||
3472 ecmd->rx_coalesce_usecs_irq > tmax)
3475 if (ecmd->tx_max_coalesced_frames >= TX_RING_SIZE-1)
3477 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
3479 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
3482 if (ecmd->tx_coalesce_usecs == 0)
3483 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
3485 sky2_write32(hw, STAT_TX_TIMER_INI,
3486 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
3487 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3489 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
3491 if (ecmd->rx_coalesce_usecs == 0)
3492 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
3494 sky2_write32(hw, STAT_LEV_TIMER_INI,
3495 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
3496 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3498 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
3500 if (ecmd->rx_coalesce_usecs_irq == 0)
3501 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
3503 sky2_write32(hw, STAT_ISR_TIMER_INI,
3504 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
3505 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3507 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
3511 static void sky2_get_ringparam(struct net_device *dev,
3512 struct ethtool_ringparam *ering)
3514 struct sky2_port *sky2 = netdev_priv(dev);
3516 ering->rx_max_pending = RX_MAX_PENDING;
3517 ering->rx_mini_max_pending = 0;
3518 ering->rx_jumbo_max_pending = 0;
3519 ering->tx_max_pending = TX_RING_SIZE - 1;
3521 ering->rx_pending = sky2->rx_pending;
3522 ering->rx_mini_pending = 0;
3523 ering->rx_jumbo_pending = 0;
3524 ering->tx_pending = sky2->tx_pending;
3527 static int sky2_set_ringparam(struct net_device *dev,
3528 struct ethtool_ringparam *ering)
3530 struct sky2_port *sky2 = netdev_priv(dev);
3533 if (ering->rx_pending > RX_MAX_PENDING ||
3534 ering->rx_pending < 8 ||
3535 ering->tx_pending < MAX_SKB_TX_LE ||
3536 ering->tx_pending > TX_RING_SIZE - 1)
3539 if (netif_running(dev))
3542 sky2->rx_pending = ering->rx_pending;
3543 sky2->tx_pending = ering->tx_pending;
3545 if (netif_running(dev)) {
3550 sky2_set_multicast(dev);
3556 static int sky2_get_regs_len(struct net_device *dev)
3562 * Returns copy of control register region
3563 * Note: ethtool_get_regs always provides full size (16k) buffer
3565 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
3568 const struct sky2_port *sky2 = netdev_priv(dev);
3569 const void __iomem *io = sky2->hw->regs;
3572 memset(p, 0, regs->len);
3574 memcpy_fromio(p, io, B3_RAM_ADDR);
3576 /* skip diagnostic ram region */
3577 memcpy_fromio(p + B3_RI_WTO_R1, io + B3_RI_WTO_R1, 0x2000 - B3_RI_WTO_R1);
3579 /* copy GMAC registers */
3580 memcpy_fromio(p + BASE_GMAC_1, io + BASE_GMAC_1, 0x1000);
3581 if (sky2->hw->ports > 1)
3582 memcpy_fromio(p + BASE_GMAC_2, io + BASE_GMAC_2, 0x1000);
3586 /* In order to do Jumbo packets on these chips, need to turn off the
3587 * transmit store/forward. Therefore checksum offload won't work.
3589 static int no_tx_offload(struct net_device *dev)
3591 const struct sky2_port *sky2 = netdev_priv(dev);
3592 const struct sky2_hw *hw = sky2->hw;
3594 return dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U;
3597 static int sky2_set_tx_csum(struct net_device *dev, u32 data)
3599 if (data && no_tx_offload(dev))
3602 return ethtool_op_set_tx_csum(dev, data);
3606 static int sky2_set_tso(struct net_device *dev, u32 data)
3608 if (data && no_tx_offload(dev))
3611 return ethtool_op_set_tso(dev, data);
3614 static int sky2_get_eeprom_len(struct net_device *dev)
3616 struct sky2_port *sky2 = netdev_priv(dev);
3619 reg2 = sky2_pci_read32(sky2->hw, PCI_DEV_REG2);
3620 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
3623 static u32 sky2_vpd_read(struct sky2_hw *hw, int cap, u16 offset)
3625 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
3627 while (!(sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F))
3629 return sky2_pci_read32(hw, cap + PCI_VPD_DATA);
3632 static void sky2_vpd_write(struct sky2_hw *hw, int cap, u16 offset, u32 val)
3634 sky2_pci_write32(hw, cap + PCI_VPD_DATA, val);
3635 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
3638 } while (sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F);
3641 static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
3644 struct sky2_port *sky2 = netdev_priv(dev);
3645 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
3646 int length = eeprom->len;
3647 u16 offset = eeprom->offset;
3652 eeprom->magic = SKY2_EEPROM_MAGIC;
3654 while (length > 0) {
3655 u32 val = sky2_vpd_read(sky2->hw, cap, offset);
3656 int n = min_t(int, length, sizeof(val));
3658 memcpy(data, &val, n);
3666 static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
3669 struct sky2_port *sky2 = netdev_priv(dev);
3670 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
3671 int length = eeprom->len;
3672 u16 offset = eeprom->offset;
3677 if (eeprom->magic != SKY2_EEPROM_MAGIC)
3680 while (length > 0) {
3682 int n = min_t(int, length, sizeof(val));
3684 if (n < sizeof(val))
3685 val = sky2_vpd_read(sky2->hw, cap, offset);
3686 memcpy(&val, data, n);
3688 sky2_vpd_write(sky2->hw, cap, offset, val);
3698 static const struct ethtool_ops sky2_ethtool_ops = {
3699 .get_settings = sky2_get_settings,
3700 .set_settings = sky2_set_settings,
3701 .get_drvinfo = sky2_get_drvinfo,
3702 .get_wol = sky2_get_wol,
3703 .set_wol = sky2_set_wol,
3704 .get_msglevel = sky2_get_msglevel,
3705 .set_msglevel = sky2_set_msglevel,
3706 .nway_reset = sky2_nway_reset,
3707 .get_regs_len = sky2_get_regs_len,
3708 .get_regs = sky2_get_regs,
3709 .get_link = ethtool_op_get_link,
3710 .get_eeprom_len = sky2_get_eeprom_len,
3711 .get_eeprom = sky2_get_eeprom,
3712 .set_eeprom = sky2_set_eeprom,
3713 .get_sg = ethtool_op_get_sg,
3714 .set_sg = ethtool_op_set_sg,
3715 .get_tx_csum = ethtool_op_get_tx_csum,
3716 .set_tx_csum = sky2_set_tx_csum,
3717 .get_tso = ethtool_op_get_tso,
3718 .set_tso = sky2_set_tso,
3719 .get_rx_csum = sky2_get_rx_csum,
3720 .set_rx_csum = sky2_set_rx_csum,
3721 .get_strings = sky2_get_strings,
3722 .get_coalesce = sky2_get_coalesce,
3723 .set_coalesce = sky2_set_coalesce,
3724 .get_ringparam = sky2_get_ringparam,
3725 .set_ringparam = sky2_set_ringparam,
3726 .get_pauseparam = sky2_get_pauseparam,
3727 .set_pauseparam = sky2_set_pauseparam,
3728 .phys_id = sky2_phys_id,
3729 .get_stats_count = sky2_get_stats_count,
3730 .get_ethtool_stats = sky2_get_ethtool_stats,
3733 #ifdef CONFIG_SKY2_DEBUG
3735 static struct dentry *sky2_debug;
3737 static int sky2_debug_show(struct seq_file *seq, void *v)
3739 struct net_device *dev = seq->private;
3740 const struct sky2_port *sky2 = netdev_priv(dev);
3741 const struct sky2_hw *hw = sky2->hw;
3742 unsigned port = sky2->port;
3746 if (!netif_running(dev))
3749 seq_printf(seq, "IRQ src=%x mask=%x control=%x\n",
3750 sky2_read32(hw, B0_ISRC),
3751 sky2_read32(hw, B0_IMSK),
3752 sky2_read32(hw, B0_Y2_SP_ICR));
3754 netif_poll_disable(hw->dev[0]);
3755 last = sky2_read16(hw, STAT_PUT_IDX);
3757 if (hw->st_idx == last)
3758 seq_puts(seq, "Status ring (empty)\n");
3760 seq_puts(seq, "Status ring\n");
3761 for (idx = hw->st_idx; idx != last && idx < STATUS_RING_SIZE;
3762 idx = RING_NEXT(idx, STATUS_RING_SIZE)) {
3763 const struct sky2_status_le *le = hw->st_le + idx;
3764 seq_printf(seq, "[%d] %#x %d %#x\n",
3765 idx, le->opcode, le->length, le->status);
3767 seq_puts(seq, "\n");
3770 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
3771 sky2->tx_cons, sky2->tx_prod,
3772 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
3773 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
3775 /* Dump contents of tx ring */
3777 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < TX_RING_SIZE;
3778 idx = RING_NEXT(idx, TX_RING_SIZE)) {
3779 const struct sky2_tx_le *le = sky2->tx_le + idx;
3780 u32 a = le32_to_cpu(le->addr);
3783 seq_printf(seq, "%u:", idx);
3786 switch(le->opcode & ~HW_OWNER) {
3788 seq_printf(seq, " %#x:", a);
3791 seq_printf(seq, " mtu=%d", a);
3794 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
3797 seq_printf(seq, " csum=%#x", a);
3800 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
3803 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
3806 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
3809 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
3810 a, le16_to_cpu(le->length));
3813 if (le->ctrl & EOP) {
3814 seq_putc(seq, '\n');
3819 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
3820 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
3821 last = sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
3822 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
3824 netif_poll_enable(hw->dev[0]);
3828 static int sky2_debug_open(struct inode *inode, struct file *file)
3830 return single_open(file, sky2_debug_show, inode->i_private);
3833 static const struct file_operations sky2_debug_fops = {
3834 .owner = THIS_MODULE,
3835 .open = sky2_debug_open,
3837 .llseek = seq_lseek,
3838 .release = single_release,
3842 * Use network device events to create/remove/rename
3843 * debugfs file entries
3845 static int sky2_device_event(struct notifier_block *unused,
3846 unsigned long event, void *ptr)
3848 struct net_device *dev = ptr;
3850 if (dev->open == sky2_up) {
3851 struct sky2_port *sky2 = netdev_priv(dev);
3854 case NETDEV_CHANGENAME:
3855 if (!netif_running(dev))
3859 case NETDEV_GOING_DOWN:
3860 if (sky2->debugfs) {
3861 printk(KERN_DEBUG PFX "%s: remove debugfs\n",
3863 debugfs_remove(sky2->debugfs);
3864 sky2->debugfs = NULL;
3867 if (event != NETDEV_CHANGENAME)
3869 /* fallthrough for changename */
3873 d = debugfs_create_file(dev->name, S_IRUGO,
3876 if (d == NULL || IS_ERR(d))
3877 printk(KERN_INFO PFX
3878 "%s: debugfs create failed\n",
3890 static struct notifier_block sky2_notifier = {
3891 .notifier_call = sky2_device_event,
3895 static __init void sky2_debug_init(void)
3899 ent = debugfs_create_dir("sky2", NULL);
3900 if (!ent || IS_ERR(ent))
3904 register_netdevice_notifier(&sky2_notifier);
3907 static __exit void sky2_debug_cleanup(void)
3910 unregister_netdevice_notifier(&sky2_notifier);
3911 debugfs_remove(sky2_debug);
3917 #define sky2_debug_init()
3918 #define sky2_debug_cleanup()
3922 /* Initialize network device */
3923 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
3925 int highmem, int wol)
3927 struct sky2_port *sky2;
3928 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
3931 dev_err(&hw->pdev->dev, "etherdev alloc failed");
3935 SET_MODULE_OWNER(dev);
3936 SET_NETDEV_DEV(dev, &hw->pdev->dev);
3937 dev->irq = hw->pdev->irq;
3938 dev->open = sky2_up;
3939 dev->stop = sky2_down;
3940 dev->do_ioctl = sky2_ioctl;
3941 dev->hard_start_xmit = sky2_xmit_frame;
3942 dev->get_stats = sky2_get_stats;
3943 dev->set_multicast_list = sky2_set_multicast;
3944 dev->set_mac_address = sky2_set_mac_address;
3945 dev->change_mtu = sky2_change_mtu;
3946 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
3947 dev->tx_timeout = sky2_tx_timeout;
3948 dev->watchdog_timeo = TX_WATCHDOG;
3950 dev->poll = sky2_poll;
3951 dev->weight = NAPI_WEIGHT;
3952 #ifdef CONFIG_NET_POLL_CONTROLLER
3953 /* Network console (only works on port 0)
3954 * because netpoll makes assumptions about NAPI
3957 dev->poll_controller = sky2_netpoll;
3960 sky2 = netdev_priv(dev);
3963 sky2->msg_enable = netif_msg_init(debug, default_msg);
3965 /* Auto speed and flow control */
3966 sky2->autoneg = AUTONEG_ENABLE;
3967 sky2->flow_mode = FC_BOTH;
3971 sky2->advertising = sky2_supported_modes(hw);
3975 spin_lock_init(&sky2->phy_lock);
3976 sky2->tx_pending = TX_DEF_PENDING;
3977 sky2->rx_pending = RX_DEF_PENDING;
3979 hw->dev[port] = dev;
3983 dev->features |= NETIF_F_TSO | NETIF_F_IP_CSUM | NETIF_F_SG;
3985 dev->features |= NETIF_F_HIGHDMA;
3987 #ifdef SKY2_VLAN_TAG_USED
3988 /* The workaround for FE+ status conflicts with VLAN tag detection. */
3989 if (!(sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
3990 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0)) {
3991 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
3992 dev->vlan_rx_register = sky2_vlan_rx_register;
3996 /* read the mac address */
3997 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
3998 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
4003 static void __devinit sky2_show_addr(struct net_device *dev)
4005 const struct sky2_port *sky2 = netdev_priv(dev);
4007 if (netif_msg_probe(sky2))
4008 printk(KERN_INFO PFX "%s: addr %02x:%02x:%02x:%02x:%02x:%02x\n",
4010 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
4011 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
4014 /* Handle software interrupt used during MSI test */
4015 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
4017 struct sky2_hw *hw = dev_id;
4018 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4023 if (status & Y2_IS_IRQ_SW) {
4024 hw->flags |= SKY2_HW_USE_MSI;
4025 wake_up(&hw->msi_wait);
4026 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4028 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4033 /* Test interrupt path by forcing a a software IRQ */
4034 static int __devinit sky2_test_msi(struct sky2_hw *hw)
4036 struct pci_dev *pdev = hw->pdev;
4039 init_waitqueue_head (&hw->msi_wait);
4041 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4043 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4045 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4049 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4050 sky2_read8(hw, B0_CTST);
4052 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4054 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4055 /* MSI test failed, go back to INTx mode */
4056 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4057 "switching to INTx mode.\n");
4060 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4063 sky2_write32(hw, B0_IMSK, 0);
4064 sky2_read32(hw, B0_IMSK);
4066 free_irq(pdev->irq, hw);
4071 static int __devinit pci_wake_enabled(struct pci_dev *dev)
4073 int pm = pci_find_capability(dev, PCI_CAP_ID_PM);
4078 if (pci_read_config_word(dev, pm + PCI_PM_CTRL, &value))
4080 return value & PCI_PM_CTRL_PME_ENABLE;
4083 static int __devinit sky2_probe(struct pci_dev *pdev,
4084 const struct pci_device_id *ent)
4086 struct net_device *dev;
4088 int err, using_dac = 0, wol_default;
4090 err = pci_enable_device(pdev);
4092 dev_err(&pdev->dev, "cannot enable PCI device\n");
4096 err = pci_request_regions(pdev, DRV_NAME);
4098 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4099 goto err_out_disable;
4102 pci_set_master(pdev);
4104 if (sizeof(dma_addr_t) > sizeof(u32) &&
4105 !(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
4107 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4109 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4110 "for consistent allocations\n");
4111 goto err_out_free_regions;
4114 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4116 dev_err(&pdev->dev, "no usable DMA configuration\n");
4117 goto err_out_free_regions;
4121 wol_default = pci_wake_enabled(pdev) ? WAKE_MAGIC : 0;
4124 hw = kzalloc(sizeof(*hw), GFP_KERNEL);
4126 dev_err(&pdev->dev, "cannot allocate hardware struct\n");
4127 goto err_out_free_regions;
4132 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
4134 dev_err(&pdev->dev, "cannot map device registers\n");
4135 goto err_out_free_hw;
4139 /* The sk98lin vendor driver uses hardware byte swapping but
4140 * this driver uses software swapping.
4144 reg = sky2_pci_read32(hw, PCI_DEV_REG2);
4145 reg &= ~PCI_REV_DESC;
4146 sky2_pci_write32(hw, PCI_DEV_REG2, reg);
4150 /* ring for status responses */
4151 hw->st_le = pci_alloc_consistent(hw->pdev, STATUS_LE_BYTES,
4154 goto err_out_iounmap;
4156 err = sky2_init(hw);
4158 goto err_out_iounmap;
4160 dev_info(&pdev->dev, "v%s addr 0x%llx irq %d Yukon-%s (0x%x) rev %d\n",
4161 DRV_VERSION, (unsigned long long)pci_resource_start(pdev, 0),
4162 pdev->irq, yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL],
4163 hw->chip_id, hw->chip_rev);
4167 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
4170 goto err_out_free_pci;
4173 if (!disable_msi && pci_enable_msi(pdev) == 0) {
4174 err = sky2_test_msi(hw);
4175 if (err == -EOPNOTSUPP)
4176 pci_disable_msi(pdev);
4178 goto err_out_free_netdev;
4181 err = register_netdev(dev);
4183 dev_err(&pdev->dev, "cannot register net device\n");
4184 goto err_out_free_netdev;
4187 err = request_irq(pdev->irq, sky2_intr,
4188 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
4191 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4192 goto err_out_unregister;
4194 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4196 sky2_show_addr(dev);
4198 if (hw->ports > 1) {
4199 struct net_device *dev1;
4201 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
4203 dev_warn(&pdev->dev, "allocation for second device failed\n");
4204 else if ((err = register_netdev(dev1))) {
4205 dev_warn(&pdev->dev,
4206 "register of second port failed (%d)\n", err);
4210 sky2_show_addr(dev1);
4213 setup_timer(&hw->watchdog_timer, sky2_watchdog, (unsigned long) hw);
4214 INIT_WORK(&hw->restart_work, sky2_restart);
4216 pci_set_drvdata(pdev, hw);
4221 if (hw->flags & SKY2_HW_USE_MSI)
4222 pci_disable_msi(pdev);
4223 unregister_netdev(dev);
4224 err_out_free_netdev:
4227 sky2_write8(hw, B0_CTST, CS_RST_SET);
4228 pci_free_consistent(hw->pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4233 err_out_free_regions:
4234 pci_release_regions(pdev);
4236 pci_disable_device(pdev);
4238 pci_set_drvdata(pdev, NULL);
4242 static void __devexit sky2_remove(struct pci_dev *pdev)
4244 struct sky2_hw *hw = pci_get_drvdata(pdev);
4245 struct net_device *dev0, *dev1;
4250 del_timer_sync(&hw->watchdog_timer);
4252 flush_scheduled_work();
4254 sky2_write32(hw, B0_IMSK, 0);
4255 synchronize_irq(hw->pdev->irq);
4260 unregister_netdev(dev1);
4261 unregister_netdev(dev0);
4265 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
4266 sky2_write8(hw, B0_CTST, CS_RST_SET);
4267 sky2_read8(hw, B0_CTST);
4269 free_irq(pdev->irq, hw);
4270 if (hw->flags & SKY2_HW_USE_MSI)
4271 pci_disable_msi(pdev);
4272 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4273 pci_release_regions(pdev);
4274 pci_disable_device(pdev);
4282 pci_set_drvdata(pdev, NULL);
4286 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
4288 struct sky2_hw *hw = pci_get_drvdata(pdev);
4294 netif_poll_disable(hw->dev[0]);
4296 for (i = 0; i < hw->ports; i++) {
4297 struct net_device *dev = hw->dev[i];
4298 struct sky2_port *sky2 = netdev_priv(dev);
4300 if (netif_running(dev))
4304 sky2_wol_init(sky2);
4309 sky2_write32(hw, B0_IMSK, 0);
4312 pci_save_state(pdev);
4313 pci_enable_wake(pdev, pci_choose_state(pdev, state), wol);
4314 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4319 static int sky2_resume(struct pci_dev *pdev)
4321 struct sky2_hw *hw = pci_get_drvdata(pdev);
4327 err = pci_set_power_state(pdev, PCI_D0);
4331 err = pci_restore_state(pdev);
4335 pci_enable_wake(pdev, PCI_D0, 0);
4337 /* Re-enable all clocks */
4338 if (hw->chip_id == CHIP_ID_YUKON_EX ||
4339 hw->chip_id == CHIP_ID_YUKON_EC_U ||
4340 hw->chip_id == CHIP_ID_YUKON_FE_P)
4341 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
4345 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4347 for (i = 0; i < hw->ports; i++) {
4348 struct net_device *dev = hw->dev[i];
4349 if (netif_running(dev)) {
4352 printk(KERN_ERR PFX "%s: could not up: %d\n",
4358 sky2_set_multicast(dev);
4362 netif_poll_enable(hw->dev[0]);
4366 dev_err(&pdev->dev, "resume failed (%d)\n", err);
4367 pci_disable_device(pdev);
4372 static void sky2_shutdown(struct pci_dev *pdev)
4374 struct sky2_hw *hw = pci_get_drvdata(pdev);
4380 netif_poll_disable(hw->dev[0]);
4382 for (i = 0; i < hw->ports; i++) {
4383 struct net_device *dev = hw->dev[i];
4384 struct sky2_port *sky2 = netdev_priv(dev);
4388 sky2_wol_init(sky2);
4395 pci_enable_wake(pdev, PCI_D3hot, wol);
4396 pci_enable_wake(pdev, PCI_D3cold, wol);
4398 pci_disable_device(pdev);
4399 pci_set_power_state(pdev, PCI_D3hot);
4403 static struct pci_driver sky2_driver = {
4405 .id_table = sky2_id_table,
4406 .probe = sky2_probe,
4407 .remove = __devexit_p(sky2_remove),
4409 .suspend = sky2_suspend,
4410 .resume = sky2_resume,
4412 .shutdown = sky2_shutdown,
4415 static int __init sky2_init_module(void)
4418 return pci_register_driver(&sky2_driver);
4421 static void __exit sky2_cleanup_module(void)
4423 pci_unregister_driver(&sky2_driver);
4424 sky2_debug_cleanup();
4427 module_init(sky2_init_module);
4428 module_exit(sky2_cleanup_module);
4430 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
4431 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
4432 MODULE_LICENSE("GPL");
4433 MODULE_VERSION(DRV_VERSION);