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 "1.21"
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
68 #define TX_RING_SIZE 512
69 #define TX_DEF_PENDING (TX_RING_SIZE - 1)
70 #define TX_MIN_PENDING 64
71 #define MAX_SKB_TX_LE (4 + (sizeof(dma_addr_t)/sizeof(u32))*MAX_SKB_FRAGS)
73 #define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
74 #define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
75 #define TX_WATCHDOG (5 * HZ)
76 #define NAPI_WEIGHT 64
77 #define PHY_RETRIES 1000
79 #define SKY2_EEPROM_MAGIC 0x9955aabb
82 #define RING_NEXT(x,s) (((x)+1) & ((s)-1))
84 static const u32 default_msg =
85 NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
86 | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
87 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
89 static int debug = -1; /* defaults above */
90 module_param(debug, int, 0);
91 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
93 static int copybreak __read_mostly = 128;
94 module_param(copybreak, int, 0);
95 MODULE_PARM_DESC(copybreak, "Receive copy threshold");
97 static int disable_msi = 0;
98 module_param(disable_msi, int, 0);
99 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
101 static DEFINE_PCI_DEVICE_TABLE(sky2_id_table) = {
102 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
103 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
104 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) }, /* DGE-560T */
105 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4001) }, /* DGE-550SX */
106 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B02) }, /* DGE-560SX */
107 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4B03) }, /* DGE-550T */
108 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) }, /* 88E8021 */
109 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) }, /* 88E8022 */
110 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) }, /* 88E8061 */
111 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) }, /* 88E8062 */
112 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) }, /* 88E8021 */
113 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) }, /* 88E8022 */
114 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) }, /* 88E8061 */
115 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) }, /* 88E8062 */
116 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) }, /* 88E8035 */
117 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) }, /* 88E8036 */
118 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4352) }, /* 88E8038 */
119 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4353) }, /* 88E8039 */
120 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4354) }, /* 88E8040 */
121 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4356) }, /* 88EC033 */
122 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4357) }, /* 88E8042 */
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 */
136 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436C) }, /* 88E8072 */
137 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x436D) }, /* 88E8055 */
138 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4370) }, /* 88E8075 */
139 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4380) }, /* 88E8057 */
143 MODULE_DEVICE_TABLE(pci, sky2_id_table);
145 /* Avoid conditionals by using array */
146 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
147 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
148 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
150 static void sky2_set_multicast(struct net_device *dev);
152 /* Access to PHY via serial interconnect */
153 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
157 gma_write16(hw, port, GM_SMI_DATA, val);
158 gma_write16(hw, port, GM_SMI_CTRL,
159 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
161 for (i = 0; i < PHY_RETRIES; i++) {
162 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
166 if (!(ctrl & GM_SMI_CT_BUSY))
172 dev_warn(&hw->pdev->dev,"%s: phy write timeout\n", hw->dev[port]->name);
176 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
180 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
184 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
185 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
187 for (i = 0; i < PHY_RETRIES; i++) {
188 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
192 if (ctrl & GM_SMI_CT_RD_VAL) {
193 *val = gma_read16(hw, port, GM_SMI_DATA);
200 dev_warn(&hw->pdev->dev, "%s: phy read timeout\n", hw->dev[port]->name);
203 dev_err(&hw->pdev->dev, "%s: phy I/O error\n", hw->dev[port]->name);
207 static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
210 __gm_phy_read(hw, port, reg, &v);
215 static void sky2_power_on(struct sky2_hw *hw)
217 /* switch power to VCC (WA for VAUX problem) */
218 sky2_write8(hw, B0_POWER_CTRL,
219 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
221 /* disable Core Clock Division, */
222 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
224 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
225 /* enable bits are inverted */
226 sky2_write8(hw, B2_Y2_CLK_GATE,
227 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
228 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
229 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
231 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
233 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
236 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
238 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
239 /* set all bits to 0 except bits 15..12 and 8 */
240 reg &= P_ASPM_CONTROL_MSK;
241 sky2_pci_write32(hw, PCI_DEV_REG4, reg);
243 reg = sky2_pci_read32(hw, PCI_DEV_REG5);
244 /* set all bits to 0 except bits 28 & 27 */
245 reg &= P_CTL_TIM_VMAIN_AV_MSK;
246 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
248 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
250 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
251 reg = sky2_read32(hw, B2_GP_IO);
252 reg |= GLB_GPIO_STAT_RACE_DIS;
253 sky2_write32(hw, B2_GP_IO, reg);
255 sky2_read32(hw, B2_GP_IO);
259 static void sky2_power_aux(struct sky2_hw *hw)
261 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
262 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
264 /* enable bits are inverted */
265 sky2_write8(hw, B2_Y2_CLK_GATE,
266 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
267 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
268 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
270 /* switch power to VAUX */
271 if (sky2_read16(hw, B0_CTST) & Y2_VAUX_AVAIL)
272 sky2_write8(hw, B0_POWER_CTRL,
273 (PC_VAUX_ENA | PC_VCC_ENA |
274 PC_VAUX_ON | PC_VCC_OFF));
277 static void sky2_power_state(struct sky2_hw *hw, pci_power_t state)
279 u16 power_control = sky2_pci_read16(hw, hw->pm_cap + PCI_PM_CTRL);
280 int pex = pci_find_capability(hw->pdev, PCI_CAP_ID_EXP);
283 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
300 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
301 /* additional power saving measurements */
302 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
304 /* set gating core clock for LTSSM in L1 state */
305 reg |= P_PEX_LTSSM_STAT(P_PEX_LTSSM_L1_STAT) |
306 /* auto clock gated scheme controlled by CLKREQ */
307 P_ASPM_A1_MODE_SELECT |
308 /* enable Gate Root Core Clock */
309 P_CLK_GATE_ROOT_COR_ENA;
311 if (pex && (hw->flags & SKY2_HW_CLK_POWER)) {
312 /* enable Clock Power Management (CLKREQ) */
313 u16 ctrl = sky2_pci_read16(hw, pex + PCI_EXP_DEVCTL);
315 ctrl |= PCI_EXP_DEVCTL_AUX_PME;
316 sky2_pci_write16(hw, pex + PCI_EXP_DEVCTL, ctrl);
318 /* force CLKREQ Enable in Our4 (A1b only) */
319 reg |= P_ASPM_FORCE_CLKREQ_ENA;
321 /* set Mask Register for Release/Gate Clock */
322 sky2_pci_write32(hw, PCI_DEV_REG5,
323 P_REL_PCIE_EXIT_L1_ST | P_GAT_PCIE_ENTER_L1_ST |
324 P_REL_PCIE_RX_EX_IDLE | P_GAT_PCIE_RX_EL_IDLE |
325 P_REL_GPHY_LINK_UP | P_GAT_GPHY_LINK_DOWN);
327 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_CLK_HALT);
329 /* put CPU into reset state */
330 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, HCU_CCSR_ASF_RESET);
331 if (hw->chip_id == CHIP_ID_YUKON_SUPR && hw->chip_rev == CHIP_REV_YU_SU_A0)
332 /* put CPU into halt state */
333 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, HCU_CCSR_ASF_HALTED);
335 if (pex && !(hw->flags & SKY2_HW_RAM_BUFFER)) {
336 reg = sky2_pci_read32(hw, PCI_DEV_REG1);
337 /* force to PCIe L1 */
338 reg |= PCI_FORCE_PEX_L1;
339 sky2_pci_write32(hw, PCI_DEV_REG1, reg);
344 dev_warn(&hw->pdev->dev, PFX "Invalid power state (%d) ",
349 power_control |= PCI_PM_CTRL_PME_ENABLE;
350 /* Finally, set the new power state. */
351 sky2_pci_write32(hw, hw->pm_cap + PCI_PM_CTRL, power_control);
353 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
354 sky2_pci_read32(hw, B0_CTST);
357 static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
361 /* disable all GMAC IRQ's */
362 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
364 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
365 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
366 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
367 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
369 reg = gma_read16(hw, port, GM_RX_CTRL);
370 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
371 gma_write16(hw, port, GM_RX_CTRL, reg);
374 /* flow control to advertise bits */
375 static const u16 copper_fc_adv[] = {
377 [FC_TX] = PHY_M_AN_ASP,
378 [FC_RX] = PHY_M_AN_PC,
379 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
382 /* flow control to advertise bits when using 1000BaseX */
383 static const u16 fiber_fc_adv[] = {
384 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
385 [FC_TX] = PHY_M_P_ASYM_MD_X,
386 [FC_RX] = PHY_M_P_SYM_MD_X,
387 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
390 /* flow control to GMA disable bits */
391 static const u16 gm_fc_disable[] = {
392 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
393 [FC_TX] = GM_GPCR_FC_RX_DIS,
394 [FC_RX] = GM_GPCR_FC_TX_DIS,
399 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
401 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
402 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
404 if (sky2->autoneg == AUTONEG_ENABLE &&
405 !(hw->flags & SKY2_HW_NEWER_PHY)) {
406 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
408 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
410 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
412 /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
413 if (hw->chip_id == CHIP_ID_YUKON_EC)
414 /* set downshift counter to 3x and enable downshift */
415 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
417 /* set master & slave downshift counter to 1x */
418 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
420 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
423 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
424 if (sky2_is_copper(hw)) {
425 if (!(hw->flags & SKY2_HW_GIGABIT)) {
426 /* enable automatic crossover */
427 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
429 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
430 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
433 /* Enable Class A driver for FE+ A0 */
434 spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2);
435 spec |= PHY_M_FESC_SEL_CL_A;
436 gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec);
439 /* disable energy detect */
440 ctrl &= ~PHY_M_PC_EN_DET_MSK;
442 /* enable automatic crossover */
443 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
445 /* downshift on PHY 88E1112 and 88E1149 is changed */
446 if (sky2->autoneg == AUTONEG_ENABLE
447 && (hw->flags & SKY2_HW_NEWER_PHY)) {
448 /* set downshift counter to 3x and enable downshift */
449 ctrl &= ~PHY_M_PC_DSC_MSK;
450 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
454 /* workaround for deviation #4.88 (CRC errors) */
455 /* disable Automatic Crossover */
457 ctrl &= ~PHY_M_PC_MDIX_MSK;
460 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
462 /* special setup for PHY 88E1112 Fiber */
463 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
464 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
466 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
467 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
468 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
469 ctrl &= ~PHY_M_MAC_MD_MSK;
470 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
471 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
473 if (hw->pmd_type == 'P') {
474 /* select page 1 to access Fiber registers */
475 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
477 /* for SFP-module set SIGDET polarity to low */
478 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
479 ctrl |= PHY_M_FIB_SIGD_POL;
480 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
483 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
491 if (sky2->autoneg == AUTONEG_ENABLE) {
492 if (sky2_is_copper(hw)) {
493 if (sky2->advertising & ADVERTISED_1000baseT_Full)
494 ct1000 |= PHY_M_1000C_AFD;
495 if (sky2->advertising & ADVERTISED_1000baseT_Half)
496 ct1000 |= PHY_M_1000C_AHD;
497 if (sky2->advertising & ADVERTISED_100baseT_Full)
498 adv |= PHY_M_AN_100_FD;
499 if (sky2->advertising & ADVERTISED_100baseT_Half)
500 adv |= PHY_M_AN_100_HD;
501 if (sky2->advertising & ADVERTISED_10baseT_Full)
502 adv |= PHY_M_AN_10_FD;
503 if (sky2->advertising & ADVERTISED_10baseT_Half)
504 adv |= PHY_M_AN_10_HD;
506 adv |= copper_fc_adv[sky2->flow_mode];
507 } else { /* special defines for FIBER (88E1040S only) */
508 if (sky2->advertising & ADVERTISED_1000baseT_Full)
509 adv |= PHY_M_AN_1000X_AFD;
510 if (sky2->advertising & ADVERTISED_1000baseT_Half)
511 adv |= PHY_M_AN_1000X_AHD;
513 adv |= fiber_fc_adv[sky2->flow_mode];
516 /* Restart Auto-negotiation */
517 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
519 /* forced speed/duplex settings */
520 ct1000 = PHY_M_1000C_MSE;
522 /* Disable auto update for duplex flow control and speed */
523 reg |= GM_GPCR_AU_ALL_DIS;
525 switch (sky2->speed) {
527 ctrl |= PHY_CT_SP1000;
528 reg |= GM_GPCR_SPEED_1000;
531 ctrl |= PHY_CT_SP100;
532 reg |= GM_GPCR_SPEED_100;
536 if (sky2->duplex == DUPLEX_FULL) {
537 reg |= GM_GPCR_DUP_FULL;
538 ctrl |= PHY_CT_DUP_MD;
539 } else if (sky2->speed < SPEED_1000)
540 sky2->flow_mode = FC_NONE;
543 reg |= gm_fc_disable[sky2->flow_mode];
545 /* Forward pause packets to GMAC? */
546 if (sky2->flow_mode & FC_RX)
547 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
549 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
552 gma_write16(hw, port, GM_GP_CTRL, reg);
554 if (hw->flags & SKY2_HW_GIGABIT)
555 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
557 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
558 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
560 /* Setup Phy LED's */
561 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
564 switch (hw->chip_id) {
565 case CHIP_ID_YUKON_FE:
566 /* on 88E3082 these bits are at 11..9 (shifted left) */
567 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
569 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
571 /* delete ACT LED control bits */
572 ctrl &= ~PHY_M_FELP_LED1_MSK;
573 /* change ACT LED control to blink mode */
574 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
575 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
578 case CHIP_ID_YUKON_FE_P:
579 /* Enable Link Partner Next Page */
580 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
581 ctrl |= PHY_M_PC_ENA_LIP_NP;
583 /* disable Energy Detect and enable scrambler */
584 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
585 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
587 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
588 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
589 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
590 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
592 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
595 case CHIP_ID_YUKON_XL:
596 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
598 /* select page 3 to access LED control register */
599 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
601 /* set LED Function Control register */
602 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
603 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
604 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
605 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
606 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
608 /* set Polarity Control register */
609 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
610 (PHY_M_POLC_LS1_P_MIX(4) |
611 PHY_M_POLC_IS0_P_MIX(4) |
612 PHY_M_POLC_LOS_CTRL(2) |
613 PHY_M_POLC_INIT_CTRL(2) |
614 PHY_M_POLC_STA1_CTRL(2) |
615 PHY_M_POLC_STA0_CTRL(2)));
617 /* restore page register */
618 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
621 case CHIP_ID_YUKON_EC_U:
622 case CHIP_ID_YUKON_EX:
623 case CHIP_ID_YUKON_SUPR:
624 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
626 /* select page 3 to access LED control register */
627 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
629 /* set LED Function Control register */
630 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
631 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
632 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
633 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
634 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
636 /* set Blink Rate in LED Timer Control Register */
637 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
638 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
639 /* restore page register */
640 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
644 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
645 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
647 /* turn off the Rx LED (LED_RX) */
648 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
651 if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_UL_2) {
652 /* apply fixes in PHY AFE */
653 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
655 /* increase differential signal amplitude in 10BASE-T */
656 gm_phy_write(hw, port, 0x18, 0xaa99);
657 gm_phy_write(hw, port, 0x17, 0x2011);
659 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
660 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
661 gm_phy_write(hw, port, 0x18, 0xa204);
662 gm_phy_write(hw, port, 0x17, 0x2002);
665 /* set page register to 0 */
666 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
667 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
668 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
669 /* apply workaround for integrated resistors calibration */
670 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
671 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
672 } else if (hw->chip_id != CHIP_ID_YUKON_EX &&
673 hw->chip_id < CHIP_ID_YUKON_SUPR) {
674 /* no effect on Yukon-XL */
675 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
677 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
678 /* turn on 100 Mbps LED (LED_LINK100) */
679 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
683 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
687 /* Enable phy interrupt on auto-negotiation complete (or link up) */
688 if (sky2->autoneg == AUTONEG_ENABLE)
689 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
691 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
694 static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
695 static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
697 static void sky2_phy_power_up(struct sky2_hw *hw, unsigned port)
701 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
702 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
703 reg1 &= ~phy_power[port];
705 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
706 reg1 |= coma_mode[port];
708 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
709 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
710 sky2_pci_read32(hw, PCI_DEV_REG1);
713 static void sky2_phy_power_down(struct sky2_hw *hw, unsigned port)
718 /* release GPHY Control reset */
719 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
721 /* release GMAC reset */
722 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
724 if (hw->flags & SKY2_HW_NEWER_PHY) {
725 /* select page 2 to access MAC control register */
726 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
728 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
729 /* allow GMII Power Down */
730 ctrl &= ~PHY_M_MAC_GMIF_PUP;
731 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
733 /* set page register back to 0 */
734 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
737 /* setup General Purpose Control Register */
738 gma_write16(hw, port, GM_GP_CTRL,
739 GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 | GM_GPCR_AU_ALL_DIS);
741 if (hw->chip_id != CHIP_ID_YUKON_EC) {
742 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
743 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
745 /* enable Power Down */
746 ctrl |= PHY_M_PC_POW_D_ENA;
747 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
750 /* set IEEE compatible Power Down Mode (dev. #4.99) */
751 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_PDOWN);
754 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
755 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
756 reg1 |= phy_power[port]; /* set PHY to PowerDown/COMA Mode */
757 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
758 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
761 /* Force a renegotiation */
762 static void sky2_phy_reinit(struct sky2_port *sky2)
764 spin_lock_bh(&sky2->phy_lock);
765 sky2_phy_init(sky2->hw, sky2->port);
766 spin_unlock_bh(&sky2->phy_lock);
769 /* Put device in state to listen for Wake On Lan */
770 static void sky2_wol_init(struct sky2_port *sky2)
772 struct sky2_hw *hw = sky2->hw;
773 unsigned port = sky2->port;
774 enum flow_control save_mode;
778 /* Bring hardware out of reset */
779 sky2_write16(hw, B0_CTST, CS_RST_CLR);
780 sky2_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
782 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
783 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
786 * sky2_reset will re-enable on resume
788 save_mode = sky2->flow_mode;
789 ctrl = sky2->advertising;
791 sky2->advertising &= ~(ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full);
792 sky2->flow_mode = FC_NONE;
794 spin_lock_bh(&sky2->phy_lock);
795 sky2_phy_power_up(hw, port);
796 sky2_phy_init(hw, port);
797 spin_unlock_bh(&sky2->phy_lock);
799 sky2->flow_mode = save_mode;
800 sky2->advertising = ctrl;
802 /* Set GMAC to no flow control and auto update for speed/duplex */
803 gma_write16(hw, port, GM_GP_CTRL,
804 GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
805 GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
807 /* Set WOL address */
808 memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
809 sky2->netdev->dev_addr, ETH_ALEN);
811 /* Turn on appropriate WOL control bits */
812 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
814 if (sky2->wol & WAKE_PHY)
815 ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
817 ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
819 if (sky2->wol & WAKE_MAGIC)
820 ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
822 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;;
824 ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
825 sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
827 /* Turn on legacy PCI-Express PME mode */
828 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
829 reg1 |= PCI_Y2_PME_LEGACY;
830 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
833 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
837 static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
839 struct net_device *dev = hw->dev[port];
841 if ( (hw->chip_id == CHIP_ID_YUKON_EX &&
842 hw->chip_rev != CHIP_REV_YU_EX_A0) ||
843 hw->chip_id == CHIP_ID_YUKON_FE_P ||
844 hw->chip_id == CHIP_ID_YUKON_SUPR) {
845 /* Yukon-Extreme B0 and further Extreme devices */
846 /* enable Store & Forward mode for TX */
848 if (dev->mtu <= ETH_DATA_LEN)
849 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
850 TX_JUMBO_DIS | TX_STFW_ENA);
853 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
854 TX_JUMBO_ENA| TX_STFW_ENA);
856 if (dev->mtu <= ETH_DATA_LEN)
857 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
859 /* set Tx GMAC FIFO Almost Empty Threshold */
860 sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR),
861 (ECU_JUMBO_WM << 16) | ECU_AE_THR);
863 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS);
865 /* Can't do offload because of lack of store/forward */
866 dev->features &= ~(NETIF_F_TSO | NETIF_F_SG | NETIF_F_ALL_CSUM);
871 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
873 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
877 const u8 *addr = hw->dev[port]->dev_addr;
879 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
880 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
882 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
884 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
885 /* WA DEV_472 -- looks like crossed wires on port 2 */
886 /* clear GMAC 1 Control reset */
887 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
889 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
890 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
891 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
892 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
893 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
896 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
898 /* Enable Transmit FIFO Underrun */
899 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
901 spin_lock_bh(&sky2->phy_lock);
902 sky2_phy_power_up(hw, port);
903 sky2_phy_init(hw, port);
904 spin_unlock_bh(&sky2->phy_lock);
907 reg = gma_read16(hw, port, GM_PHY_ADDR);
908 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
910 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
911 gma_read16(hw, port, i);
912 gma_write16(hw, port, GM_PHY_ADDR, reg);
914 /* transmit control */
915 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
917 /* receive control reg: unicast + multicast + no FCS */
918 gma_write16(hw, port, GM_RX_CTRL,
919 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
921 /* transmit flow control */
922 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
924 /* transmit parameter */
925 gma_write16(hw, port, GM_TX_PARAM,
926 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
927 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
928 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
929 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
931 /* serial mode register */
932 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
933 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
935 if (hw->dev[port]->mtu > ETH_DATA_LEN)
936 reg |= GM_SMOD_JUMBO_ENA;
938 gma_write16(hw, port, GM_SERIAL_MODE, reg);
940 /* virtual address for data */
941 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
943 /* physical address: used for pause frames */
944 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
946 /* ignore counter overflows */
947 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
948 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
949 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
951 /* Configure Rx MAC FIFO */
952 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
953 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
954 if (hw->chip_id == CHIP_ID_YUKON_EX ||
955 hw->chip_id == CHIP_ID_YUKON_FE_P)
956 rx_reg |= GMF_RX_OVER_ON;
958 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
960 if (hw->chip_id == CHIP_ID_YUKON_XL) {
961 /* Hardware errata - clear flush mask */
962 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0);
964 /* Flush Rx MAC FIFO on any flow control or error */
965 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
968 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
969 reg = RX_GMF_FL_THR_DEF + 1;
970 /* Another magic mystery workaround from sk98lin */
971 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
972 hw->chip_rev == CHIP_REV_YU_FE2_A0)
974 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
976 /* Configure Tx MAC FIFO */
977 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
978 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
980 /* On chips without ram buffer, pause is controled by MAC level */
981 if (!(hw->flags & SKY2_HW_RAM_BUFFER)) {
982 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
983 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
985 sky2_set_tx_stfwd(hw, port);
988 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
989 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
990 /* disable dynamic watermark */
991 reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA));
992 reg &= ~TX_DYN_WM_ENA;
993 sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg);
997 /* Assign Ram Buffer allocation to queue */
998 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
1002 /* convert from K bytes to qwords used for hw register */
1005 end = start + space - 1;
1007 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
1008 sky2_write32(hw, RB_ADDR(q, RB_START), start);
1009 sky2_write32(hw, RB_ADDR(q, RB_END), end);
1010 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
1011 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
1013 if (q == Q_R1 || q == Q_R2) {
1014 u32 tp = space - space/4;
1016 /* On receive queue's set the thresholds
1017 * give receiver priority when > 3/4 full
1018 * send pause when down to 2K
1020 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
1021 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
1023 tp = space - 2048/8;
1024 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
1025 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
1027 /* Enable store & forward on Tx queue's because
1028 * Tx FIFO is only 1K on Yukon
1030 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
1033 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
1034 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
1037 /* Setup Bus Memory Interface */
1038 static void sky2_qset(struct sky2_hw *hw, u16 q)
1040 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
1041 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
1042 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
1043 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
1046 /* Setup prefetch unit registers. This is the interface between
1047 * hardware and driver list elements
1049 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
1052 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1053 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
1054 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
1055 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
1056 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
1057 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
1059 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
1062 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
1064 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
1066 sky2->tx_prod = RING_NEXT(sky2->tx_prod, TX_RING_SIZE);
1071 static void tx_init(struct sky2_port *sky2)
1073 struct sky2_tx_le *le;
1075 sky2->tx_prod = sky2->tx_cons = 0;
1076 sky2->tx_tcpsum = 0;
1077 sky2->tx_last_mss = 0;
1079 le = get_tx_le(sky2);
1081 le->opcode = OP_ADDR64 | HW_OWNER;
1084 static inline struct tx_ring_info *tx_le_re(struct sky2_port *sky2,
1085 struct sky2_tx_le *le)
1087 return sky2->tx_ring + (le - sky2->tx_le);
1090 /* Update chip's next pointer */
1091 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
1093 /* Make sure write' to descriptors are complete before we tell hardware */
1095 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
1097 /* Synchronize I/O on since next processor may write to tail */
1102 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
1104 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
1105 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
1110 /* Build description to hardware for one receive segment */
1111 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
1112 dma_addr_t map, unsigned len)
1114 struct sky2_rx_le *le;
1116 if (sizeof(dma_addr_t) > sizeof(u32)) {
1117 le = sky2_next_rx(sky2);
1118 le->addr = cpu_to_le32(upper_32_bits(map));
1119 le->opcode = OP_ADDR64 | HW_OWNER;
1122 le = sky2_next_rx(sky2);
1123 le->addr = cpu_to_le32((u32) map);
1124 le->length = cpu_to_le16(len);
1125 le->opcode = op | HW_OWNER;
1128 /* Build description to hardware for one possibly fragmented skb */
1129 static void sky2_rx_submit(struct sky2_port *sky2,
1130 const struct rx_ring_info *re)
1134 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
1136 for (i = 0; i < skb_shinfo(re->skb)->nr_frags; i++)
1137 sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
1141 static void sky2_rx_map_skb(struct pci_dev *pdev, struct rx_ring_info *re,
1144 struct sk_buff *skb = re->skb;
1147 re->data_addr = pci_map_single(pdev, skb->data, size, PCI_DMA_FROMDEVICE);
1148 pci_unmap_len_set(re, data_size, size);
1150 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1151 re->frag_addr[i] = pci_map_page(pdev,
1152 skb_shinfo(skb)->frags[i].page,
1153 skb_shinfo(skb)->frags[i].page_offset,
1154 skb_shinfo(skb)->frags[i].size,
1155 PCI_DMA_FROMDEVICE);
1158 static void sky2_rx_unmap_skb(struct pci_dev *pdev, struct rx_ring_info *re)
1160 struct sk_buff *skb = re->skb;
1163 pci_unmap_single(pdev, re->data_addr, pci_unmap_len(re, data_size),
1164 PCI_DMA_FROMDEVICE);
1166 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
1167 pci_unmap_page(pdev, re->frag_addr[i],
1168 skb_shinfo(skb)->frags[i].size,
1169 PCI_DMA_FROMDEVICE);
1172 /* Tell chip where to start receive checksum.
1173 * Actually has two checksums, but set both same to avoid possible byte
1176 static void rx_set_checksum(struct sky2_port *sky2)
1178 struct sky2_rx_le *le = sky2_next_rx(sky2);
1180 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
1182 le->opcode = OP_TCPSTART | HW_OWNER;
1184 sky2_write32(sky2->hw,
1185 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
1186 sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
1190 * The RX Stop command will not work for Yukon-2 if the BMU does not
1191 * reach the end of packet and since we can't make sure that we have
1192 * incoming data, we must reset the BMU while it is not doing a DMA
1193 * transfer. Since it is possible that the RX path is still active,
1194 * the RX RAM buffer will be stopped first, so any possible incoming
1195 * data will not trigger a DMA. After the RAM buffer is stopped, the
1196 * BMU is polled until any DMA in progress is ended and only then it
1199 static void sky2_rx_stop(struct sky2_port *sky2)
1201 struct sky2_hw *hw = sky2->hw;
1202 unsigned rxq = rxqaddr[sky2->port];
1205 /* disable the RAM Buffer receive queue */
1206 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
1208 for (i = 0; i < 0xffff; i++)
1209 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
1210 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
1213 printk(KERN_WARNING PFX "%s: receiver stop failed\n",
1214 sky2->netdev->name);
1216 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
1218 /* reset the Rx prefetch unit */
1219 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
1223 /* Clean out receive buffer area, assumes receiver hardware stopped */
1224 static void sky2_rx_clean(struct sky2_port *sky2)
1228 memset(sky2->rx_le, 0, RX_LE_BYTES);
1229 for (i = 0; i < sky2->rx_pending; i++) {
1230 struct rx_ring_info *re = sky2->rx_ring + i;
1233 sky2_rx_unmap_skb(sky2->hw->pdev, re);
1240 /* Basic MII support */
1241 static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1243 struct mii_ioctl_data *data = if_mii(ifr);
1244 struct sky2_port *sky2 = netdev_priv(dev);
1245 struct sky2_hw *hw = sky2->hw;
1246 int err = -EOPNOTSUPP;
1248 if (!netif_running(dev))
1249 return -ENODEV; /* Phy still in reset */
1253 data->phy_id = PHY_ADDR_MARV;
1259 spin_lock_bh(&sky2->phy_lock);
1260 err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val);
1261 spin_unlock_bh(&sky2->phy_lock);
1263 data->val_out = val;
1268 if (!capable(CAP_NET_ADMIN))
1271 spin_lock_bh(&sky2->phy_lock);
1272 err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f,
1274 spin_unlock_bh(&sky2->phy_lock);
1280 #ifdef SKY2_VLAN_TAG_USED
1281 static void sky2_set_vlan_mode(struct sky2_hw *hw, u16 port, bool onoff)
1284 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1286 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1289 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
1291 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
1296 static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
1298 struct sky2_port *sky2 = netdev_priv(dev);
1299 struct sky2_hw *hw = sky2->hw;
1300 u16 port = sky2->port;
1302 netif_tx_lock_bh(dev);
1303 napi_disable(&hw->napi);
1306 sky2_set_vlan_mode(hw, port, grp != NULL);
1308 sky2_read32(hw, B0_Y2_SP_LISR);
1309 napi_enable(&hw->napi);
1310 netif_tx_unlock_bh(dev);
1315 * Allocate an skb for receiving. If the MTU is large enough
1316 * make the skb non-linear with a fragment list of pages.
1318 static struct sk_buff *sky2_rx_alloc(struct sky2_port *sky2)
1320 struct sk_buff *skb;
1323 if (sky2->hw->flags & SKY2_HW_RAM_BUFFER) {
1324 unsigned char *start;
1326 * Workaround for a bug in FIFO that cause hang
1327 * if the FIFO if the receive buffer is not 64 byte aligned.
1328 * The buffer returned from netdev_alloc_skb is
1329 * aligned except if slab debugging is enabled.
1331 skb = netdev_alloc_skb(sky2->netdev, sky2->rx_data_size + 8);
1334 start = PTR_ALIGN(skb->data, 8);
1335 skb_reserve(skb, start - skb->data);
1337 skb = netdev_alloc_skb(sky2->netdev,
1338 sky2->rx_data_size + NET_IP_ALIGN);
1341 skb_reserve(skb, NET_IP_ALIGN);
1344 for (i = 0; i < sky2->rx_nfrags; i++) {
1345 struct page *page = alloc_page(GFP_ATOMIC);
1349 skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
1359 static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1361 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1365 * Allocate and setup receiver buffer pool.
1366 * Normal case this ends up creating one list element for skb
1367 * in the receive ring. Worst case if using large MTU and each
1368 * allocation falls on a different 64 bit region, that results
1369 * in 6 list elements per ring entry.
1370 * One element is used for checksum enable/disable, and one
1371 * extra to avoid wrap.
1373 static int sky2_rx_start(struct sky2_port *sky2)
1375 struct sky2_hw *hw = sky2->hw;
1376 struct rx_ring_info *re;
1377 unsigned rxq = rxqaddr[sky2->port];
1378 unsigned i, size, thresh;
1380 sky2->rx_put = sky2->rx_next = 0;
1383 /* On PCI express lowering the watermark gives better performance */
1384 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
1385 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1387 /* These chips have no ram buffer?
1388 * MAC Rx RAM Read is controlled by hardware */
1389 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1390 (hw->chip_rev == CHIP_REV_YU_EC_U_A1
1391 || hw->chip_rev == CHIP_REV_YU_EC_U_B0))
1392 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1394 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1396 if (!(hw->flags & SKY2_HW_NEW_LE))
1397 rx_set_checksum(sky2);
1399 /* Space needed for frame data + headers rounded up */
1400 size = roundup(sky2->netdev->mtu + ETH_HLEN + VLAN_HLEN, 8);
1402 /* Stopping point for hardware truncation */
1403 thresh = (size - 8) / sizeof(u32);
1405 sky2->rx_nfrags = size >> PAGE_SHIFT;
1406 BUG_ON(sky2->rx_nfrags > ARRAY_SIZE(re->frag_addr));
1408 /* Compute residue after pages */
1409 size -= sky2->rx_nfrags << PAGE_SHIFT;
1411 /* Optimize to handle small packets and headers */
1412 if (size < copybreak)
1414 if (size < ETH_HLEN)
1417 sky2->rx_data_size = size;
1420 for (i = 0; i < sky2->rx_pending; i++) {
1421 re = sky2->rx_ring + i;
1423 re->skb = sky2_rx_alloc(sky2);
1427 sky2_rx_map_skb(hw->pdev, re, sky2->rx_data_size);
1428 sky2_rx_submit(sky2, re);
1432 * The receiver hangs if it receives frames larger than the
1433 * packet buffer. As a workaround, truncate oversize frames, but
1434 * the register is limited to 9 bits, so if you do frames > 2052
1435 * you better get the MTU right!
1438 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1440 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1441 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1444 /* Tell chip about available buffers */
1445 sky2_rx_update(sky2, rxq);
1448 sky2_rx_clean(sky2);
1452 /* Bring up network interface. */
1453 static int sky2_up(struct net_device *dev)
1455 struct sky2_port *sky2 = netdev_priv(dev);
1456 struct sky2_hw *hw = sky2->hw;
1457 unsigned port = sky2->port;
1459 int cap, err = -ENOMEM;
1460 struct net_device *otherdev = hw->dev[sky2->port^1];
1463 * On dual port PCI-X card, there is an problem where status
1464 * can be received out of order due to split transactions
1466 if (otherdev && netif_running(otherdev) &&
1467 (cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PCIX))) {
1470 cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
1471 cmd &= ~PCI_X_CMD_MAX_SPLIT;
1472 sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
1476 if (netif_msg_ifup(sky2))
1477 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
1479 netif_carrier_off(dev);
1481 /* must be power of 2 */
1482 sky2->tx_le = pci_alloc_consistent(hw->pdev,
1484 sizeof(struct sky2_tx_le),
1489 sky2->tx_ring = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info),
1496 sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
1500 memset(sky2->rx_le, 0, RX_LE_BYTES);
1502 sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info),
1507 sky2_mac_init(hw, port);
1509 /* Register is number of 4K blocks on internal RAM buffer. */
1510 ramsize = sky2_read8(hw, B2_E_0) * 4;
1514 hw->flags |= SKY2_HW_RAM_BUFFER;
1515 pr_debug(PFX "%s: ram buffer %dK\n", dev->name, ramsize);
1517 rxspace = ramsize / 2;
1519 rxspace = 8 + (2*(ramsize - 16))/3;
1521 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1522 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1524 /* Make sure SyncQ is disabled */
1525 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1529 sky2_qset(hw, txqaddr[port]);
1531 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1532 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1533 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1535 /* Set almost empty threshold */
1536 if (hw->chip_id == CHIP_ID_YUKON_EC_U
1537 && hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1538 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1540 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1543 #ifdef SKY2_VLAN_TAG_USED
1544 sky2_set_vlan_mode(hw, port, sky2->vlgrp != NULL);
1547 err = sky2_rx_start(sky2);
1551 /* Enable interrupts from phy/mac for port */
1552 imask = sky2_read32(hw, B0_IMSK);
1553 imask |= portirq_msk[port];
1554 sky2_write32(hw, B0_IMSK, imask);
1556 sky2_set_multicast(dev);
1561 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1562 sky2->rx_le, sky2->rx_le_map);
1566 pci_free_consistent(hw->pdev,
1567 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1568 sky2->tx_le, sky2->tx_le_map);
1571 kfree(sky2->tx_ring);
1572 kfree(sky2->rx_ring);
1574 sky2->tx_ring = NULL;
1575 sky2->rx_ring = NULL;
1579 /* Modular subtraction in ring */
1580 static inline int tx_dist(unsigned tail, unsigned head)
1582 return (head - tail) & (TX_RING_SIZE - 1);
1585 /* Number of list elements available for next tx */
1586 static inline int tx_avail(const struct sky2_port *sky2)
1588 return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
1591 /* Estimate of number of transmit list elements required */
1592 static unsigned tx_le_req(const struct sk_buff *skb)
1596 count = sizeof(dma_addr_t) / sizeof(u32);
1597 count += skb_shinfo(skb)->nr_frags * count;
1599 if (skb_is_gso(skb))
1602 if (skb->ip_summed == CHECKSUM_PARTIAL)
1609 * Put one packet in ring for transmit.
1610 * A single packet can generate multiple list elements, and
1611 * the number of ring elements will probably be less than the number
1612 * of list elements used.
1614 static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1616 struct sky2_port *sky2 = netdev_priv(dev);
1617 struct sky2_hw *hw = sky2->hw;
1618 struct sky2_tx_le *le = NULL;
1619 struct tx_ring_info *re;
1625 if (unlikely(tx_avail(sky2) < tx_le_req(skb)))
1626 return NETDEV_TX_BUSY;
1628 if (unlikely(netif_msg_tx_queued(sky2)))
1629 printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
1630 dev->name, sky2->tx_prod, skb->len);
1632 len = skb_headlen(skb);
1633 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1635 /* Send high bits if needed */
1636 if (sizeof(dma_addr_t) > sizeof(u32)) {
1637 le = get_tx_le(sky2);
1638 le->addr = cpu_to_le32(upper_32_bits(mapping));
1639 le->opcode = OP_ADDR64 | HW_OWNER;
1642 /* Check for TCP Segmentation Offload */
1643 mss = skb_shinfo(skb)->gso_size;
1646 if (!(hw->flags & SKY2_HW_NEW_LE))
1647 mss += ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1649 if (mss != sky2->tx_last_mss) {
1650 le = get_tx_le(sky2);
1651 le->addr = cpu_to_le32(mss);
1653 if (hw->flags & SKY2_HW_NEW_LE)
1654 le->opcode = OP_MSS | HW_OWNER;
1656 le->opcode = OP_LRGLEN | HW_OWNER;
1657 sky2->tx_last_mss = mss;
1662 #ifdef SKY2_VLAN_TAG_USED
1663 /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */
1664 if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
1666 le = get_tx_le(sky2);
1668 le->opcode = OP_VLAN|HW_OWNER;
1670 le->opcode |= OP_VLAN;
1671 le->length = cpu_to_be16(vlan_tx_tag_get(skb));
1676 /* Handle TCP checksum offload */
1677 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1678 /* On Yukon EX (some versions) encoding change. */
1679 if (hw->flags & SKY2_HW_AUTO_TX_SUM)
1680 ctrl |= CALSUM; /* auto checksum */
1682 const unsigned offset = skb_transport_offset(skb);
1685 tcpsum = offset << 16; /* sum start */
1686 tcpsum |= offset + skb->csum_offset; /* sum write */
1688 ctrl |= CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
1689 if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1692 if (tcpsum != sky2->tx_tcpsum) {
1693 sky2->tx_tcpsum = tcpsum;
1695 le = get_tx_le(sky2);
1696 le->addr = cpu_to_le32(tcpsum);
1697 le->length = 0; /* initial checksum value */
1698 le->ctrl = 1; /* one packet */
1699 le->opcode = OP_TCPLISW | HW_OWNER;
1704 le = get_tx_le(sky2);
1705 le->addr = cpu_to_le32((u32) mapping);
1706 le->length = cpu_to_le16(len);
1708 le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
1710 re = tx_le_re(sky2, le);
1712 pci_unmap_addr_set(re, mapaddr, mapping);
1713 pci_unmap_len_set(re, maplen, len);
1715 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1716 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1718 mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
1719 frag->size, PCI_DMA_TODEVICE);
1721 if (sizeof(dma_addr_t) > sizeof(u32)) {
1722 le = get_tx_le(sky2);
1723 le->addr = cpu_to_le32(upper_32_bits(mapping));
1725 le->opcode = OP_ADDR64 | HW_OWNER;
1728 le = get_tx_le(sky2);
1729 le->addr = cpu_to_le32((u32) mapping);
1730 le->length = cpu_to_le16(frag->size);
1732 le->opcode = OP_BUFFER | HW_OWNER;
1734 re = tx_le_re(sky2, le);
1736 pci_unmap_addr_set(re, mapaddr, mapping);
1737 pci_unmap_len_set(re, maplen, frag->size);
1742 if (tx_avail(sky2) <= MAX_SKB_TX_LE)
1743 netif_stop_queue(dev);
1745 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1747 dev->trans_start = jiffies;
1748 return NETDEV_TX_OK;
1752 * Free ring elements from starting at tx_cons until "done"
1754 * NB: the hardware will tell us about partial completion of multi-part
1755 * buffers so make sure not to free skb to early.
1757 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1759 struct net_device *dev = sky2->netdev;
1760 struct pci_dev *pdev = sky2->hw->pdev;
1763 BUG_ON(done >= TX_RING_SIZE);
1765 for (idx = sky2->tx_cons; idx != done;
1766 idx = RING_NEXT(idx, TX_RING_SIZE)) {
1767 struct sky2_tx_le *le = sky2->tx_le + idx;
1768 struct tx_ring_info *re = sky2->tx_ring + idx;
1770 switch(le->opcode & ~HW_OWNER) {
1773 pci_unmap_single(pdev,
1774 pci_unmap_addr(re, mapaddr),
1775 pci_unmap_len(re, maplen),
1779 pci_unmap_page(pdev, pci_unmap_addr(re, mapaddr),
1780 pci_unmap_len(re, maplen),
1785 if (le->ctrl & EOP) {
1786 if (unlikely(netif_msg_tx_done(sky2)))
1787 printk(KERN_DEBUG "%s: tx done %u\n",
1790 dev->stats.tx_packets++;
1791 dev->stats.tx_bytes += re->skb->len;
1793 dev_kfree_skb_any(re->skb);
1794 sky2->tx_next = RING_NEXT(idx, TX_RING_SIZE);
1798 sky2->tx_cons = idx;
1801 if (tx_avail(sky2) > MAX_SKB_TX_LE + 4)
1802 netif_wake_queue(dev);
1805 /* Cleanup all untransmitted buffers, assume transmitter not running */
1806 static void sky2_tx_clean(struct net_device *dev)
1808 struct sky2_port *sky2 = netdev_priv(dev);
1810 netif_tx_lock_bh(dev);
1811 sky2_tx_complete(sky2, sky2->tx_prod);
1812 netif_tx_unlock_bh(dev);
1815 /* Network shutdown */
1816 static int sky2_down(struct net_device *dev)
1818 struct sky2_port *sky2 = netdev_priv(dev);
1819 struct sky2_hw *hw = sky2->hw;
1820 unsigned port = sky2->port;
1824 /* Never really got started! */
1828 if (netif_msg_ifdown(sky2))
1829 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
1831 /* Stop more packets from being queued */
1832 netif_stop_queue(dev);
1834 /* Disable port IRQ */
1835 imask = sky2_read32(hw, B0_IMSK);
1836 imask &= ~portirq_msk[port];
1837 sky2_write32(hw, B0_IMSK, imask);
1839 synchronize_irq(hw->pdev->irq);
1841 sky2_gmac_reset(hw, port);
1843 /* Stop transmitter */
1844 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1845 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1847 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1848 RB_RST_SET | RB_DIS_OP_MD);
1850 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1851 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1852 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1854 /* Make sure no packets are pending */
1855 napi_synchronize(&hw->napi);
1857 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1859 /* Workaround shared GMAC reset */
1860 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1861 && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
1862 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1864 /* Disable Force Sync bit and Enable Alloc bit */
1865 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1866 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1868 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1869 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1870 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1872 /* Reset the PCI FIFO of the async Tx queue */
1873 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1874 BMU_RST_SET | BMU_FIFO_RST);
1876 /* Reset the Tx prefetch units */
1877 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1880 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1884 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1885 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1887 sky2_phy_power_down(hw, port);
1889 netif_carrier_off(dev);
1891 /* turn off LED's */
1892 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1895 sky2_rx_clean(sky2);
1897 pci_free_consistent(hw->pdev, RX_LE_BYTES,
1898 sky2->rx_le, sky2->rx_le_map);
1899 kfree(sky2->rx_ring);
1901 pci_free_consistent(hw->pdev,
1902 TX_RING_SIZE * sizeof(struct sky2_tx_le),
1903 sky2->tx_le, sky2->tx_le_map);
1904 kfree(sky2->tx_ring);
1909 sky2->rx_ring = NULL;
1910 sky2->tx_ring = NULL;
1915 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1917 if (hw->flags & SKY2_HW_FIBRE_PHY)
1920 if (!(hw->flags & SKY2_HW_GIGABIT)) {
1921 if (aux & PHY_M_PS_SPEED_100)
1927 switch (aux & PHY_M_PS_SPEED_MSK) {
1928 case PHY_M_PS_SPEED_1000:
1930 case PHY_M_PS_SPEED_100:
1937 static void sky2_link_up(struct sky2_port *sky2)
1939 struct sky2_hw *hw = sky2->hw;
1940 unsigned port = sky2->port;
1942 static const char *fc_name[] = {
1950 reg = gma_read16(hw, port, GM_GP_CTRL);
1951 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1952 gma_write16(hw, port, GM_GP_CTRL, reg);
1954 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1956 netif_carrier_on(sky2->netdev);
1958 mod_timer(&hw->watchdog_timer, jiffies + 1);
1960 /* Turn on link LED */
1961 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1962 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1964 if (netif_msg_link(sky2))
1965 printk(KERN_INFO PFX
1966 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1967 sky2->netdev->name, sky2->speed,
1968 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1969 fc_name[sky2->flow_status]);
1972 static void sky2_link_down(struct sky2_port *sky2)
1974 struct sky2_hw *hw = sky2->hw;
1975 unsigned port = sky2->port;
1978 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1980 reg = gma_read16(hw, port, GM_GP_CTRL);
1981 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1982 gma_write16(hw, port, GM_GP_CTRL, reg);
1984 netif_carrier_off(sky2->netdev);
1986 /* Turn on link LED */
1987 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1989 if (netif_msg_link(sky2))
1990 printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
1992 sky2_phy_init(hw, port);
1995 static enum flow_control sky2_flow(int rx, int tx)
1998 return tx ? FC_BOTH : FC_RX;
2000 return tx ? FC_TX : FC_NONE;
2003 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
2005 struct sky2_hw *hw = sky2->hw;
2006 unsigned port = sky2->port;
2009 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
2010 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
2011 if (lpa & PHY_M_AN_RF) {
2012 printk(KERN_ERR PFX "%s: remote fault", sky2->netdev->name);
2016 if (!(aux & PHY_M_PS_SPDUP_RES)) {
2017 printk(KERN_ERR PFX "%s: speed/duplex mismatch",
2018 sky2->netdev->name);
2022 sky2->speed = sky2_phy_speed(hw, aux);
2023 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2025 /* Since the pause result bits seem to in different positions on
2026 * different chips. look at registers.
2028 if (hw->flags & SKY2_HW_FIBRE_PHY) {
2029 /* Shift for bits in fiber PHY */
2030 advert &= ~(ADVERTISE_PAUSE_CAP|ADVERTISE_PAUSE_ASYM);
2031 lpa &= ~(LPA_PAUSE_CAP|LPA_PAUSE_ASYM);
2033 if (advert & ADVERTISE_1000XPAUSE)
2034 advert |= ADVERTISE_PAUSE_CAP;
2035 if (advert & ADVERTISE_1000XPSE_ASYM)
2036 advert |= ADVERTISE_PAUSE_ASYM;
2037 if (lpa & LPA_1000XPAUSE)
2038 lpa |= LPA_PAUSE_CAP;
2039 if (lpa & LPA_1000XPAUSE_ASYM)
2040 lpa |= LPA_PAUSE_ASYM;
2043 sky2->flow_status = FC_NONE;
2044 if (advert & ADVERTISE_PAUSE_CAP) {
2045 if (lpa & LPA_PAUSE_CAP)
2046 sky2->flow_status = FC_BOTH;
2047 else if (advert & ADVERTISE_PAUSE_ASYM)
2048 sky2->flow_status = FC_RX;
2049 } else if (advert & ADVERTISE_PAUSE_ASYM) {
2050 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
2051 sky2->flow_status = FC_TX;
2054 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000
2055 && !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
2056 sky2->flow_status = FC_NONE;
2058 if (sky2->flow_status & FC_TX)
2059 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2061 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2066 /* Interrupt from PHY */
2067 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
2069 struct net_device *dev = hw->dev[port];
2070 struct sky2_port *sky2 = netdev_priv(dev);
2071 u16 istatus, phystat;
2073 if (!netif_running(dev))
2076 spin_lock(&sky2->phy_lock);
2077 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2078 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2080 if (netif_msg_intr(sky2))
2081 printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
2082 sky2->netdev->name, istatus, phystat);
2084 if (sky2->autoneg == AUTONEG_ENABLE && (istatus & PHY_M_IS_AN_COMPL)) {
2085 if (sky2_autoneg_done(sky2, phystat) == 0)
2090 if (istatus & PHY_M_IS_LSP_CHANGE)
2091 sky2->speed = sky2_phy_speed(hw, phystat);
2093 if (istatus & PHY_M_IS_DUP_CHANGE)
2095 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2097 if (istatus & PHY_M_IS_LST_CHANGE) {
2098 if (phystat & PHY_M_PS_LINK_UP)
2101 sky2_link_down(sky2);
2104 spin_unlock(&sky2->phy_lock);
2107 /* Transmit timeout is only called if we are running, carrier is up
2108 * and tx queue is full (stopped).
2110 static void sky2_tx_timeout(struct net_device *dev)
2112 struct sky2_port *sky2 = netdev_priv(dev);
2113 struct sky2_hw *hw = sky2->hw;
2115 if (netif_msg_timer(sky2))
2116 printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
2118 printk(KERN_DEBUG PFX "%s: transmit ring %u .. %u report=%u done=%u\n",
2119 dev->name, sky2->tx_cons, sky2->tx_prod,
2120 sky2_read16(hw, sky2->port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
2121 sky2_read16(hw, Q_ADDR(txqaddr[sky2->port], Q_DONE)));
2123 /* can't restart safely under softirq */
2124 schedule_work(&hw->restart_work);
2127 static int sky2_change_mtu(struct net_device *dev, int new_mtu)
2129 struct sky2_port *sky2 = netdev_priv(dev);
2130 struct sky2_hw *hw = sky2->hw;
2131 unsigned port = sky2->port;
2136 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2139 if (new_mtu > ETH_DATA_LEN &&
2140 (hw->chip_id == CHIP_ID_YUKON_FE ||
2141 hw->chip_id == CHIP_ID_YUKON_FE_P))
2144 if (!netif_running(dev)) {
2149 imask = sky2_read32(hw, B0_IMSK);
2150 sky2_write32(hw, B0_IMSK, 0);
2152 dev->trans_start = jiffies; /* prevent tx timeout */
2153 netif_stop_queue(dev);
2154 napi_disable(&hw->napi);
2156 synchronize_irq(hw->pdev->irq);
2158 if (!(hw->flags & SKY2_HW_RAM_BUFFER))
2159 sky2_set_tx_stfwd(hw, port);
2161 ctl = gma_read16(hw, port, GM_GP_CTRL);
2162 gma_write16(hw, port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA);
2164 sky2_rx_clean(sky2);
2168 mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
2169 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
2171 if (dev->mtu > ETH_DATA_LEN)
2172 mode |= GM_SMOD_JUMBO_ENA;
2174 gma_write16(hw, port, GM_SERIAL_MODE, mode);
2176 sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_ENA_OP_MD);
2178 err = sky2_rx_start(sky2);
2179 sky2_write32(hw, B0_IMSK, imask);
2181 sky2_read32(hw, B0_Y2_SP_LISR);
2182 napi_enable(&hw->napi);
2187 gma_write16(hw, port, GM_GP_CTRL, ctl);
2189 netif_wake_queue(dev);
2195 /* For small just reuse existing skb for next receive */
2196 static struct sk_buff *receive_copy(struct sky2_port *sky2,
2197 const struct rx_ring_info *re,
2200 struct sk_buff *skb;
2202 skb = netdev_alloc_skb(sky2->netdev, length + 2);
2204 skb_reserve(skb, 2);
2205 pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
2206 length, PCI_DMA_FROMDEVICE);
2207 skb_copy_from_linear_data(re->skb, skb->data, length);
2208 skb->ip_summed = re->skb->ip_summed;
2209 skb->csum = re->skb->csum;
2210 pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
2211 length, PCI_DMA_FROMDEVICE);
2212 re->skb->ip_summed = CHECKSUM_NONE;
2213 skb_put(skb, length);
2218 /* Adjust length of skb with fragments to match received data */
2219 static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
2220 unsigned int length)
2225 /* put header into skb */
2226 size = min(length, hdr_space);
2231 num_frags = skb_shinfo(skb)->nr_frags;
2232 for (i = 0; i < num_frags; i++) {
2233 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2236 /* don't need this page */
2237 __free_page(frag->page);
2238 --skb_shinfo(skb)->nr_frags;
2240 size = min(length, (unsigned) PAGE_SIZE);
2243 skb->data_len += size;
2244 skb->truesize += size;
2251 /* Normal packet - take skb from ring element and put in a new one */
2252 static struct sk_buff *receive_new(struct sky2_port *sky2,
2253 struct rx_ring_info *re,
2254 unsigned int length)
2256 struct sk_buff *skb, *nskb;
2257 unsigned hdr_space = sky2->rx_data_size;
2259 /* Don't be tricky about reusing pages (yet) */
2260 nskb = sky2_rx_alloc(sky2);
2261 if (unlikely(!nskb))
2265 sky2_rx_unmap_skb(sky2->hw->pdev, re);
2267 prefetch(skb->data);
2269 sky2_rx_map_skb(sky2->hw->pdev, re, hdr_space);
2271 if (skb_shinfo(skb)->nr_frags)
2272 skb_put_frags(skb, hdr_space, length);
2274 skb_put(skb, length);
2279 * Receive one packet.
2280 * For larger packets, get new buffer.
2282 static struct sk_buff *sky2_receive(struct net_device *dev,
2283 u16 length, u32 status)
2285 struct sky2_port *sky2 = netdev_priv(dev);
2286 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
2287 struct sk_buff *skb = NULL;
2288 u16 count = (status & GMR_FS_LEN) >> 16;
2290 #ifdef SKY2_VLAN_TAG_USED
2291 /* Account for vlan tag */
2292 if (sky2->vlgrp && (status & GMR_FS_VLAN))
2296 if (unlikely(netif_msg_rx_status(sky2)))
2297 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
2298 dev->name, sky2->rx_next, status, length);
2300 sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
2301 prefetch(sky2->rx_ring + sky2->rx_next);
2303 /* This chip has hardware problems that generates bogus status.
2304 * So do only marginal checking and expect higher level protocols
2305 * to handle crap frames.
2307 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
2308 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
2312 if (status & GMR_FS_ANY_ERR)
2315 if (!(status & GMR_FS_RX_OK))
2318 /* if length reported by DMA does not match PHY, packet was truncated */
2319 if (length != count)
2323 if (length < copybreak)
2324 skb = receive_copy(sky2, re, length);
2326 skb = receive_new(sky2, re, length);
2328 sky2_rx_submit(sky2, re);
2333 /* Truncation of overlength packets
2334 causes PHY length to not match MAC length */
2335 ++dev->stats.rx_length_errors;
2336 if (netif_msg_rx_err(sky2) && net_ratelimit())
2337 pr_info(PFX "%s: rx length error: status %#x length %d\n",
2338 dev->name, status, length);
2342 ++dev->stats.rx_errors;
2343 if (status & GMR_FS_RX_FF_OV) {
2344 dev->stats.rx_over_errors++;
2348 if (netif_msg_rx_err(sky2) && net_ratelimit())
2349 printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
2350 dev->name, status, length);
2352 if (status & (GMR_FS_LONG_ERR | GMR_FS_UN_SIZE))
2353 dev->stats.rx_length_errors++;
2354 if (status & GMR_FS_FRAGMENT)
2355 dev->stats.rx_frame_errors++;
2356 if (status & GMR_FS_CRC_ERR)
2357 dev->stats.rx_crc_errors++;
2362 /* Transmit complete */
2363 static inline void sky2_tx_done(struct net_device *dev, u16 last)
2365 struct sky2_port *sky2 = netdev_priv(dev);
2367 if (netif_running(dev)) {
2369 sky2_tx_complete(sky2, last);
2370 netif_tx_unlock(dev);
2374 /* Process status response ring */
2375 static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
2378 unsigned rx[2] = { 0, 0 };
2382 struct sky2_port *sky2;
2383 struct sky2_status_le *le = hw->st_le + hw->st_idx;
2385 struct net_device *dev;
2386 struct sk_buff *skb;
2389 u8 opcode = le->opcode;
2391 if (!(opcode & HW_OWNER))
2394 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
2396 port = le->css & CSS_LINK_BIT;
2397 dev = hw->dev[port];
2398 sky2 = netdev_priv(dev);
2399 length = le16_to_cpu(le->length);
2400 status = le32_to_cpu(le->status);
2403 switch (opcode & ~HW_OWNER) {
2406 skb = sky2_receive(dev, length, status);
2407 if (unlikely(!skb)) {
2408 dev->stats.rx_dropped++;
2412 /* This chip reports checksum status differently */
2413 if (hw->flags & SKY2_HW_NEW_LE) {
2414 if (sky2->rx_csum &&
2415 (le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
2416 (le->css & CSS_TCPUDPCSOK))
2417 skb->ip_summed = CHECKSUM_UNNECESSARY;
2419 skb->ip_summed = CHECKSUM_NONE;
2422 skb->protocol = eth_type_trans(skb, dev);
2423 dev->stats.rx_packets++;
2424 dev->stats.rx_bytes += skb->len;
2425 dev->last_rx = jiffies;
2427 #ifdef SKY2_VLAN_TAG_USED
2428 if (sky2->vlgrp && (status & GMR_FS_VLAN)) {
2429 vlan_hwaccel_receive_skb(skb,
2431 be16_to_cpu(sky2->rx_tag));
2434 netif_receive_skb(skb);
2436 /* Stop after net poll weight */
2437 if (++work_done >= to_do)
2441 #ifdef SKY2_VLAN_TAG_USED
2443 sky2->rx_tag = length;
2447 sky2->rx_tag = length;
2454 /* If this happens then driver assuming wrong format */
2455 if (unlikely(hw->flags & SKY2_HW_NEW_LE)) {
2456 if (net_ratelimit())
2457 printk(KERN_NOTICE "%s: unexpected"
2458 " checksum status\n",
2463 /* Both checksum counters are programmed to start at
2464 * the same offset, so unless there is a problem they
2465 * should match. This failure is an early indication that
2466 * hardware receive checksumming won't work.
2468 if (likely(status >> 16 == (status & 0xffff))) {
2469 skb = sky2->rx_ring[sky2->rx_next].skb;
2470 skb->ip_summed = CHECKSUM_COMPLETE;
2471 skb->csum = status & 0xffff;
2473 printk(KERN_NOTICE PFX "%s: hardware receive "
2474 "checksum problem (status = %#x)\n",
2477 sky2_write32(sky2->hw,
2478 Q_ADDR(rxqaddr[port], Q_CSR),
2484 /* TX index reports status for both ports */
2485 BUILD_BUG_ON(TX_RING_SIZE > 0x1000);
2486 sky2_tx_done(hw->dev[0], status & 0xfff);
2488 sky2_tx_done(hw->dev[1],
2489 ((status >> 24) & 0xff)
2490 | (u16)(length & 0xf) << 8);
2494 if (net_ratelimit())
2495 printk(KERN_WARNING PFX
2496 "unknown status opcode 0x%x\n", opcode);
2498 } while (hw->st_idx != idx);
2500 /* Fully processed status ring so clear irq */
2501 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
2505 sky2_rx_update(netdev_priv(hw->dev[0]), Q_R1);
2508 sky2_rx_update(netdev_priv(hw->dev[1]), Q_R2);
2513 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
2515 struct net_device *dev = hw->dev[port];
2517 if (net_ratelimit())
2518 printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
2521 if (status & Y2_IS_PAR_RD1) {
2522 if (net_ratelimit())
2523 printk(KERN_ERR PFX "%s: ram data read parity error\n",
2526 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
2529 if (status & Y2_IS_PAR_WR1) {
2530 if (net_ratelimit())
2531 printk(KERN_ERR PFX "%s: ram data write parity error\n",
2534 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
2537 if (status & Y2_IS_PAR_MAC1) {
2538 if (net_ratelimit())
2539 printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
2540 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
2543 if (status & Y2_IS_PAR_RX1) {
2544 if (net_ratelimit())
2545 printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
2546 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
2549 if (status & Y2_IS_TCP_TXA1) {
2550 if (net_ratelimit())
2551 printk(KERN_ERR PFX "%s: TCP segmentation error\n",
2553 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
2557 static void sky2_hw_intr(struct sky2_hw *hw)
2559 struct pci_dev *pdev = hw->pdev;
2560 u32 status = sky2_read32(hw, B0_HWE_ISRC);
2561 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
2565 if (status & Y2_IS_TIST_OV)
2566 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2568 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
2571 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2572 pci_err = sky2_pci_read16(hw, PCI_STATUS);
2573 if (net_ratelimit())
2574 dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
2577 sky2_pci_write16(hw, PCI_STATUS,
2578 pci_err | PCI_STATUS_ERROR_BITS);
2579 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2582 if (status & Y2_IS_PCI_EXP) {
2583 /* PCI-Express uncorrectable Error occurred */
2586 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2587 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2588 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2590 if (net_ratelimit())
2591 dev_err(&pdev->dev, "PCI Express error (0x%x)\n", err);
2593 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
2594 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2597 if (status & Y2_HWE_L1_MASK)
2598 sky2_hw_error(hw, 0, status);
2600 if (status & Y2_HWE_L1_MASK)
2601 sky2_hw_error(hw, 1, status);
2604 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
2606 struct net_device *dev = hw->dev[port];
2607 struct sky2_port *sky2 = netdev_priv(dev);
2608 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2610 if (netif_msg_intr(sky2))
2611 printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
2614 if (status & GM_IS_RX_CO_OV)
2615 gma_read16(hw, port, GM_RX_IRQ_SRC);
2617 if (status & GM_IS_TX_CO_OV)
2618 gma_read16(hw, port, GM_TX_IRQ_SRC);
2620 if (status & GM_IS_RX_FF_OR) {
2621 ++dev->stats.rx_fifo_errors;
2622 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2625 if (status & GM_IS_TX_FF_UR) {
2626 ++dev->stats.tx_fifo_errors;
2627 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2631 /* This should never happen it is a bug. */
2632 static void sky2_le_error(struct sky2_hw *hw, unsigned port,
2633 u16 q, unsigned ring_size)
2635 struct net_device *dev = hw->dev[port];
2636 struct sky2_port *sky2 = netdev_priv(dev);
2638 const u64 *le = (q == Q_R1 || q == Q_R2)
2639 ? (u64 *) sky2->rx_le : (u64 *) sky2->tx_le;
2641 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
2642 printk(KERN_ERR PFX "%s: descriptor error q=%#x get=%u [%llx] put=%u\n",
2643 dev->name, (unsigned) q, idx, (unsigned long long) le[idx],
2644 (unsigned) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)));
2646 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
2649 static int sky2_rx_hung(struct net_device *dev)
2651 struct sky2_port *sky2 = netdev_priv(dev);
2652 struct sky2_hw *hw = sky2->hw;
2653 unsigned port = sky2->port;
2654 unsigned rxq = rxqaddr[port];
2655 u32 mac_rp = sky2_read32(hw, SK_REG(port, RX_GMF_RP));
2656 u8 mac_lev = sky2_read8(hw, SK_REG(port, RX_GMF_RLEV));
2657 u8 fifo_rp = sky2_read8(hw, Q_ADDR(rxq, Q_RP));
2658 u8 fifo_lev = sky2_read8(hw, Q_ADDR(rxq, Q_RL));
2660 /* If idle and MAC or PCI is stuck */
2661 if (sky2->check.last == dev->last_rx &&
2662 ((mac_rp == sky2->check.mac_rp &&
2663 mac_lev != 0 && mac_lev >= sky2->check.mac_lev) ||
2664 /* Check if the PCI RX hang */
2665 (fifo_rp == sky2->check.fifo_rp &&
2666 fifo_lev != 0 && fifo_lev >= sky2->check.fifo_lev))) {
2667 printk(KERN_DEBUG PFX "%s: hung mac %d:%d fifo %d (%d:%d)\n",
2668 dev->name, mac_lev, mac_rp, fifo_lev, fifo_rp,
2669 sky2_read8(hw, Q_ADDR(rxq, Q_WP)));
2672 sky2->check.last = dev->last_rx;
2673 sky2->check.mac_rp = mac_rp;
2674 sky2->check.mac_lev = mac_lev;
2675 sky2->check.fifo_rp = fifo_rp;
2676 sky2->check.fifo_lev = fifo_lev;
2681 static void sky2_watchdog(unsigned long arg)
2683 struct sky2_hw *hw = (struct sky2_hw *) arg;
2685 /* Check for lost IRQ once a second */
2686 if (sky2_read32(hw, B0_ISRC)) {
2687 napi_schedule(&hw->napi);
2691 for (i = 0; i < hw->ports; i++) {
2692 struct net_device *dev = hw->dev[i];
2693 if (!netif_running(dev))
2697 /* For chips with Rx FIFO, check if stuck */
2698 if ((hw->flags & SKY2_HW_RAM_BUFFER) &&
2699 sky2_rx_hung(dev)) {
2700 pr_info(PFX "%s: receiver hang detected\n",
2702 schedule_work(&hw->restart_work);
2711 mod_timer(&hw->watchdog_timer, round_jiffies(jiffies + HZ));
2714 /* Hardware/software error handling */
2715 static void sky2_err_intr(struct sky2_hw *hw, u32 status)
2717 if (net_ratelimit())
2718 dev_warn(&hw->pdev->dev, "error interrupt status=%#x\n", status);
2720 if (status & Y2_IS_HW_ERR)
2723 if (status & Y2_IS_IRQ_MAC1)
2724 sky2_mac_intr(hw, 0);
2726 if (status & Y2_IS_IRQ_MAC2)
2727 sky2_mac_intr(hw, 1);
2729 if (status & Y2_IS_CHK_RX1)
2730 sky2_le_error(hw, 0, Q_R1, RX_LE_SIZE);
2732 if (status & Y2_IS_CHK_RX2)
2733 sky2_le_error(hw, 1, Q_R2, RX_LE_SIZE);
2735 if (status & Y2_IS_CHK_TXA1)
2736 sky2_le_error(hw, 0, Q_XA1, TX_RING_SIZE);
2738 if (status & Y2_IS_CHK_TXA2)
2739 sky2_le_error(hw, 1, Q_XA2, TX_RING_SIZE);
2742 static int sky2_poll(struct napi_struct *napi, int work_limit)
2744 struct sky2_hw *hw = container_of(napi, struct sky2_hw, napi);
2745 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
2749 if (unlikely(status & Y2_IS_ERROR))
2750 sky2_err_intr(hw, status);
2752 if (status & Y2_IS_IRQ_PHY1)
2753 sky2_phy_intr(hw, 0);
2755 if (status & Y2_IS_IRQ_PHY2)
2756 sky2_phy_intr(hw, 1);
2758 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
2759 work_done += sky2_status_intr(hw, work_limit - work_done, idx);
2761 if (work_done >= work_limit)
2765 /* Bug/Errata workaround?
2766 * Need to kick the TX irq moderation timer.
2768 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_START) {
2769 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
2770 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2772 napi_complete(napi);
2773 sky2_read32(hw, B0_Y2_SP_LISR);
2779 static irqreturn_t sky2_intr(int irq, void *dev_id)
2781 struct sky2_hw *hw = dev_id;
2784 /* Reading this mask interrupts as side effect */
2785 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
2786 if (status == 0 || status == ~0)
2789 prefetch(&hw->st_le[hw->st_idx]);
2791 napi_schedule(&hw->napi);
2796 #ifdef CONFIG_NET_POLL_CONTROLLER
2797 static void sky2_netpoll(struct net_device *dev)
2799 struct sky2_port *sky2 = netdev_priv(dev);
2801 napi_schedule(&sky2->hw->napi);
2805 /* Chip internal frequency for clock calculations */
2806 static u32 sky2_mhz(const struct sky2_hw *hw)
2808 switch (hw->chip_id) {
2809 case CHIP_ID_YUKON_EC:
2810 case CHIP_ID_YUKON_EC_U:
2811 case CHIP_ID_YUKON_EX:
2812 case CHIP_ID_YUKON_SUPR:
2813 case CHIP_ID_YUKON_UL_2:
2816 case CHIP_ID_YUKON_FE:
2819 case CHIP_ID_YUKON_FE_P:
2822 case CHIP_ID_YUKON_XL:
2830 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
2832 return sky2_mhz(hw) * us;
2835 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
2837 return clk / sky2_mhz(hw);
2841 static int __devinit sky2_init(struct sky2_hw *hw)
2845 /* Enable all clocks and check for bad PCI access */
2846 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
2848 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2850 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
2851 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
2853 switch(hw->chip_id) {
2854 case CHIP_ID_YUKON_XL:
2855 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
2858 case CHIP_ID_YUKON_EC_U:
2859 hw->flags = SKY2_HW_GIGABIT
2861 | SKY2_HW_ADV_POWER_CTL;
2863 /* check for Rev. A1 dev 4200 */
2864 if (sky2_read16(hw, Q_ADDR(Q_XA1, Q_WM)) == 0)
2865 hw->flags |= SKY2_HW_CLK_POWER;
2868 case CHIP_ID_YUKON_EX:
2869 hw->flags = SKY2_HW_GIGABIT
2872 | SKY2_HW_ADV_POWER_CTL;
2874 /* New transmit checksum */
2875 if (hw->chip_rev != CHIP_REV_YU_EX_B0)
2876 hw->flags |= SKY2_HW_AUTO_TX_SUM;
2879 case CHIP_ID_YUKON_EC:
2880 /* This rev is really old, and requires untested workarounds */
2881 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
2882 dev_err(&hw->pdev->dev, "unsupported revision Yukon-EC rev A1\n");
2885 hw->flags = SKY2_HW_GIGABIT;
2888 case CHIP_ID_YUKON_FE:
2891 case CHIP_ID_YUKON_FE_P:
2892 hw->flags = SKY2_HW_NEWER_PHY
2894 | SKY2_HW_AUTO_TX_SUM
2895 | SKY2_HW_ADV_POWER_CTL;
2898 case CHIP_ID_YUKON_SUPR:
2899 hw->flags = SKY2_HW_GIGABIT
2902 | SKY2_HW_AUTO_TX_SUM
2903 | SKY2_HW_ADV_POWER_CTL;
2906 case CHIP_ID_YUKON_UL_2:
2907 hw->flags = SKY2_HW_GIGABIT
2908 | SKY2_HW_ADV_POWER_CTL;
2912 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
2917 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
2918 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
2919 hw->flags |= SKY2_HW_FIBRE_PHY;
2921 hw->pm_cap = pci_find_capability(hw->pdev, PCI_CAP_ID_PM);
2922 if (hw->pm_cap == 0) {
2923 dev_err(&hw->pdev->dev, "cannot find PowerManagement capability\n");
2928 t8 = sky2_read8(hw, B2_Y2_HW_RES);
2929 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
2930 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2937 static void sky2_reset(struct sky2_hw *hw)
2939 struct pci_dev *pdev = hw->pdev;
2942 u32 hwe_mask = Y2_HWE_ALL_MASK;
2945 if (hw->chip_id == CHIP_ID_YUKON_EX) {
2946 status = sky2_read16(hw, HCU_CCSR);
2947 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
2948 HCU_CCSR_UC_STATE_MSK);
2949 sky2_write16(hw, HCU_CCSR, status);
2951 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2952 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2955 sky2_write8(hw, B0_CTST, CS_RST_SET);
2956 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2958 /* allow writes to PCI config */
2959 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2961 /* clear PCI errors, if any */
2962 status = sky2_pci_read16(hw, PCI_STATUS);
2963 status |= PCI_STATUS_ERROR_BITS;
2964 sky2_pci_write16(hw, PCI_STATUS, status);
2966 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2968 cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
2970 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2973 /* If error bit is stuck on ignore it */
2974 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
2975 dev_info(&pdev->dev, "ignoring stuck error report bit\n");
2977 hwe_mask |= Y2_IS_PCI_EXP;
2981 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2983 for (i = 0; i < hw->ports; i++) {
2984 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2985 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2987 if (hw->chip_id == CHIP_ID_YUKON_EX ||
2988 hw->chip_id == CHIP_ID_YUKON_SUPR)
2989 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
2990 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
2994 /* Clear I2C IRQ noise */
2995 sky2_write32(hw, B2_I2C_IRQ, 1);
2997 /* turn off hardware timer (unused) */
2998 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2999 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
3001 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
3003 /* Turn off descriptor polling */
3004 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
3006 /* Turn off receive timestamp */
3007 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
3008 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
3010 /* enable the Tx Arbiters */
3011 for (i = 0; i < hw->ports; i++)
3012 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3014 /* Initialize ram interface */
3015 for (i = 0; i < hw->ports; i++) {
3016 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
3018 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
3019 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
3020 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
3021 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
3022 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
3023 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
3024 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
3025 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
3026 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
3027 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
3028 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
3029 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
3032 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
3034 for (i = 0; i < hw->ports; i++)
3035 sky2_gmac_reset(hw, i);
3037 memset(hw->st_le, 0, STATUS_LE_BYTES);
3040 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
3041 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
3043 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
3044 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
3046 /* Set the list last index */
3047 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
3049 sky2_write16(hw, STAT_TX_IDX_TH, 10);
3050 sky2_write8(hw, STAT_FIFO_WM, 16);
3052 /* set Status-FIFO ISR watermark */
3053 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
3054 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
3056 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
3058 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
3059 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
3060 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
3062 /* enable status unit */
3063 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
3065 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3066 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3067 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3070 static void sky2_restart(struct work_struct *work)
3072 struct sky2_hw *hw = container_of(work, struct sky2_hw, restart_work);
3073 struct net_device *dev;
3077 for (i = 0; i < hw->ports; i++) {
3079 if (netif_running(dev))
3083 napi_disable(&hw->napi);
3084 sky2_write32(hw, B0_IMSK, 0);
3086 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
3087 napi_enable(&hw->napi);
3089 for (i = 0; i < hw->ports; i++) {
3091 if (netif_running(dev)) {
3094 printk(KERN_INFO PFX "%s: could not restart %d\n",
3104 static inline u8 sky2_wol_supported(const struct sky2_hw *hw)
3106 return sky2_is_copper(hw) ? (WAKE_PHY | WAKE_MAGIC) : 0;
3109 static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3111 const struct sky2_port *sky2 = netdev_priv(dev);
3113 wol->supported = sky2_wol_supported(sky2->hw);
3114 wol->wolopts = sky2->wol;
3117 static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3119 struct sky2_port *sky2 = netdev_priv(dev);
3120 struct sky2_hw *hw = sky2->hw;
3122 if (wol->wolopts & ~sky2_wol_supported(sky2->hw))
3125 sky2->wol = wol->wolopts;
3127 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3128 hw->chip_id == CHIP_ID_YUKON_EX ||
3129 hw->chip_id == CHIP_ID_YUKON_FE_P)
3130 sky2_write32(hw, B0_CTST, sky2->wol
3131 ? Y2_HW_WOL_ON : Y2_HW_WOL_OFF);
3133 if (!netif_running(dev))
3134 sky2_wol_init(sky2);
3138 static u32 sky2_supported_modes(const struct sky2_hw *hw)
3140 if (sky2_is_copper(hw)) {
3141 u32 modes = SUPPORTED_10baseT_Half
3142 | SUPPORTED_10baseT_Full
3143 | SUPPORTED_100baseT_Half
3144 | SUPPORTED_100baseT_Full
3145 | SUPPORTED_Autoneg | SUPPORTED_TP;
3147 if (hw->flags & SKY2_HW_GIGABIT)
3148 modes |= SUPPORTED_1000baseT_Half
3149 | SUPPORTED_1000baseT_Full;
3152 return SUPPORTED_1000baseT_Half
3153 | SUPPORTED_1000baseT_Full
3158 static int sky2_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3160 struct sky2_port *sky2 = netdev_priv(dev);
3161 struct sky2_hw *hw = sky2->hw;
3163 ecmd->transceiver = XCVR_INTERNAL;
3164 ecmd->supported = sky2_supported_modes(hw);
3165 ecmd->phy_address = PHY_ADDR_MARV;
3166 if (sky2_is_copper(hw)) {
3167 ecmd->port = PORT_TP;
3168 ecmd->speed = sky2->speed;
3170 ecmd->speed = SPEED_1000;
3171 ecmd->port = PORT_FIBRE;
3174 ecmd->advertising = sky2->advertising;
3175 ecmd->autoneg = sky2->autoneg;
3176 ecmd->duplex = sky2->duplex;
3180 static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
3182 struct sky2_port *sky2 = netdev_priv(dev);
3183 const struct sky2_hw *hw = sky2->hw;
3184 u32 supported = sky2_supported_modes(hw);
3186 if (ecmd->autoneg == AUTONEG_ENABLE) {
3187 ecmd->advertising = supported;
3193 switch (ecmd->speed) {
3195 if (ecmd->duplex == DUPLEX_FULL)
3196 setting = SUPPORTED_1000baseT_Full;
3197 else if (ecmd->duplex == DUPLEX_HALF)
3198 setting = SUPPORTED_1000baseT_Half;
3203 if (ecmd->duplex == DUPLEX_FULL)
3204 setting = SUPPORTED_100baseT_Full;
3205 else if (ecmd->duplex == DUPLEX_HALF)
3206 setting = SUPPORTED_100baseT_Half;
3212 if (ecmd->duplex == DUPLEX_FULL)
3213 setting = SUPPORTED_10baseT_Full;
3214 else if (ecmd->duplex == DUPLEX_HALF)
3215 setting = SUPPORTED_10baseT_Half;
3223 if ((setting & supported) == 0)
3226 sky2->speed = ecmd->speed;
3227 sky2->duplex = ecmd->duplex;
3230 sky2->autoneg = ecmd->autoneg;
3231 sky2->advertising = ecmd->advertising;
3233 if (netif_running(dev)) {
3234 sky2_phy_reinit(sky2);
3235 sky2_set_multicast(dev);
3241 static void sky2_get_drvinfo(struct net_device *dev,
3242 struct ethtool_drvinfo *info)
3244 struct sky2_port *sky2 = netdev_priv(dev);
3246 strcpy(info->driver, DRV_NAME);
3247 strcpy(info->version, DRV_VERSION);
3248 strcpy(info->fw_version, "N/A");
3249 strcpy(info->bus_info, pci_name(sky2->hw->pdev));
3252 static const struct sky2_stat {
3253 char name[ETH_GSTRING_LEN];
3256 { "tx_bytes", GM_TXO_OK_HI },
3257 { "rx_bytes", GM_RXO_OK_HI },
3258 { "tx_broadcast", GM_TXF_BC_OK },
3259 { "rx_broadcast", GM_RXF_BC_OK },
3260 { "tx_multicast", GM_TXF_MC_OK },
3261 { "rx_multicast", GM_RXF_MC_OK },
3262 { "tx_unicast", GM_TXF_UC_OK },
3263 { "rx_unicast", GM_RXF_UC_OK },
3264 { "tx_mac_pause", GM_TXF_MPAUSE },
3265 { "rx_mac_pause", GM_RXF_MPAUSE },
3266 { "collisions", GM_TXF_COL },
3267 { "late_collision",GM_TXF_LAT_COL },
3268 { "aborted", GM_TXF_ABO_COL },
3269 { "single_collisions", GM_TXF_SNG_COL },
3270 { "multi_collisions", GM_TXF_MUL_COL },
3272 { "rx_short", GM_RXF_SHT },
3273 { "rx_runt", GM_RXE_FRAG },
3274 { "rx_64_byte_packets", GM_RXF_64B },
3275 { "rx_65_to_127_byte_packets", GM_RXF_127B },
3276 { "rx_128_to_255_byte_packets", GM_RXF_255B },
3277 { "rx_256_to_511_byte_packets", GM_RXF_511B },
3278 { "rx_512_to_1023_byte_packets", GM_RXF_1023B },
3279 { "rx_1024_to_1518_byte_packets", GM_RXF_1518B },
3280 { "rx_1518_to_max_byte_packets", GM_RXF_MAX_SZ },
3281 { "rx_too_long", GM_RXF_LNG_ERR },
3282 { "rx_fifo_overflow", GM_RXE_FIFO_OV },
3283 { "rx_jabber", GM_RXF_JAB_PKT },
3284 { "rx_fcs_error", GM_RXF_FCS_ERR },
3286 { "tx_64_byte_packets", GM_TXF_64B },
3287 { "tx_65_to_127_byte_packets", GM_TXF_127B },
3288 { "tx_128_to_255_byte_packets", GM_TXF_255B },
3289 { "tx_256_to_511_byte_packets", GM_TXF_511B },
3290 { "tx_512_to_1023_byte_packets", GM_TXF_1023B },
3291 { "tx_1024_to_1518_byte_packets", GM_TXF_1518B },
3292 { "tx_1519_to_max_byte_packets", GM_TXF_MAX_SZ },
3293 { "tx_fifo_underrun", GM_TXE_FIFO_UR },
3296 static u32 sky2_get_rx_csum(struct net_device *dev)
3298 struct sky2_port *sky2 = netdev_priv(dev);
3300 return sky2->rx_csum;
3303 static int sky2_set_rx_csum(struct net_device *dev, u32 data)
3305 struct sky2_port *sky2 = netdev_priv(dev);
3307 sky2->rx_csum = data;
3309 sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
3310 data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
3315 static u32 sky2_get_msglevel(struct net_device *netdev)
3317 struct sky2_port *sky2 = netdev_priv(netdev);
3318 return sky2->msg_enable;
3321 static int sky2_nway_reset(struct net_device *dev)
3323 struct sky2_port *sky2 = netdev_priv(dev);
3325 if (!netif_running(dev) || sky2->autoneg != AUTONEG_ENABLE)
3328 sky2_phy_reinit(sky2);
3329 sky2_set_multicast(dev);
3334 static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count)
3336 struct sky2_hw *hw = sky2->hw;
3337 unsigned port = sky2->port;
3340 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
3341 | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
3342 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
3343 | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
3345 for (i = 2; i < count; i++)
3346 data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
3349 static void sky2_set_msglevel(struct net_device *netdev, u32 value)
3351 struct sky2_port *sky2 = netdev_priv(netdev);
3352 sky2->msg_enable = value;
3355 static int sky2_get_sset_count(struct net_device *dev, int sset)
3359 return ARRAY_SIZE(sky2_stats);
3365 static void sky2_get_ethtool_stats(struct net_device *dev,
3366 struct ethtool_stats *stats, u64 * data)
3368 struct sky2_port *sky2 = netdev_priv(dev);
3370 sky2_phy_stats(sky2, data, ARRAY_SIZE(sky2_stats));
3373 static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 * data)
3377 switch (stringset) {
3379 for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
3380 memcpy(data + i * ETH_GSTRING_LEN,
3381 sky2_stats[i].name, ETH_GSTRING_LEN);
3386 static int sky2_set_mac_address(struct net_device *dev, void *p)
3388 struct sky2_port *sky2 = netdev_priv(dev);
3389 struct sky2_hw *hw = sky2->hw;
3390 unsigned port = sky2->port;
3391 const struct sockaddr *addr = p;
3393 if (!is_valid_ether_addr(addr->sa_data))
3394 return -EADDRNOTAVAIL;
3396 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3397 memcpy_toio(hw->regs + B2_MAC_1 + port * 8,
3398 dev->dev_addr, ETH_ALEN);
3399 memcpy_toio(hw->regs + B2_MAC_2 + port * 8,
3400 dev->dev_addr, ETH_ALEN);
3402 /* virtual address for data */
3403 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3405 /* physical address: used for pause frames */
3406 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3411 static void inline sky2_add_filter(u8 filter[8], const u8 *addr)
3415 bit = ether_crc(ETH_ALEN, addr) & 63;
3416 filter[bit >> 3] |= 1 << (bit & 7);
3419 static void sky2_set_multicast(struct net_device *dev)
3421 struct sky2_port *sky2 = netdev_priv(dev);
3422 struct sky2_hw *hw = sky2->hw;
3423 unsigned port = sky2->port;
3424 struct dev_mc_list *list = dev->mc_list;
3428 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
3430 rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
3431 memset(filter, 0, sizeof(filter));
3433 reg = gma_read16(hw, port, GM_RX_CTRL);
3434 reg |= GM_RXCR_UCF_ENA;
3436 if (dev->flags & IFF_PROMISC) /* promiscuous */
3437 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
3438 else if (dev->flags & IFF_ALLMULTI)
3439 memset(filter, 0xff, sizeof(filter));
3440 else if (dev->mc_count == 0 && !rx_pause)
3441 reg &= ~GM_RXCR_MCF_ENA;
3444 reg |= GM_RXCR_MCF_ENA;
3447 sky2_add_filter(filter, pause_mc_addr);
3449 for (i = 0; list && i < dev->mc_count; i++, list = list->next)
3450 sky2_add_filter(filter, list->dmi_addr);
3453 gma_write16(hw, port, GM_MC_ADDR_H1,
3454 (u16) filter[0] | ((u16) filter[1] << 8));
3455 gma_write16(hw, port, GM_MC_ADDR_H2,
3456 (u16) filter[2] | ((u16) filter[3] << 8));
3457 gma_write16(hw, port, GM_MC_ADDR_H3,
3458 (u16) filter[4] | ((u16) filter[5] << 8));
3459 gma_write16(hw, port, GM_MC_ADDR_H4,
3460 (u16) filter[6] | ((u16) filter[7] << 8));
3462 gma_write16(hw, port, GM_RX_CTRL, reg);
3465 /* Can have one global because blinking is controlled by
3466 * ethtool and that is always under RTNL mutex
3468 static void sky2_led(struct sky2_port *sky2, enum led_mode mode)
3470 struct sky2_hw *hw = sky2->hw;
3471 unsigned port = sky2->port;
3473 spin_lock_bh(&sky2->phy_lock);
3474 if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
3475 hw->chip_id == CHIP_ID_YUKON_EX ||
3476 hw->chip_id == CHIP_ID_YUKON_SUPR) {
3478 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
3479 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
3483 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3484 PHY_M_LEDC_LOS_CTRL(8) |
3485 PHY_M_LEDC_INIT_CTRL(8) |
3486 PHY_M_LEDC_STA1_CTRL(8) |
3487 PHY_M_LEDC_STA0_CTRL(8));
3490 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3491 PHY_M_LEDC_LOS_CTRL(9) |
3492 PHY_M_LEDC_INIT_CTRL(9) |
3493 PHY_M_LEDC_STA1_CTRL(9) |
3494 PHY_M_LEDC_STA0_CTRL(9));
3497 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3498 PHY_M_LEDC_LOS_CTRL(0xa) |
3499 PHY_M_LEDC_INIT_CTRL(0xa) |
3500 PHY_M_LEDC_STA1_CTRL(0xa) |
3501 PHY_M_LEDC_STA0_CTRL(0xa));
3504 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
3505 PHY_M_LEDC_LOS_CTRL(1) |
3506 PHY_M_LEDC_INIT_CTRL(8) |
3507 PHY_M_LEDC_STA1_CTRL(7) |
3508 PHY_M_LEDC_STA0_CTRL(7));
3511 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
3513 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
3514 PHY_M_LED_MO_DUP(mode) |
3515 PHY_M_LED_MO_10(mode) |
3516 PHY_M_LED_MO_100(mode) |
3517 PHY_M_LED_MO_1000(mode) |
3518 PHY_M_LED_MO_RX(mode) |
3519 PHY_M_LED_MO_TX(mode));
3521 spin_unlock_bh(&sky2->phy_lock);
3524 /* blink LED's for finding board */
3525 static int sky2_phys_id(struct net_device *dev, u32 data)
3527 struct sky2_port *sky2 = netdev_priv(dev);
3533 for (i = 0; i < data; i++) {
3534 sky2_led(sky2, MO_LED_ON);
3535 if (msleep_interruptible(500))
3537 sky2_led(sky2, MO_LED_OFF);
3538 if (msleep_interruptible(500))
3541 sky2_led(sky2, MO_LED_NORM);
3546 static void sky2_get_pauseparam(struct net_device *dev,
3547 struct ethtool_pauseparam *ecmd)
3549 struct sky2_port *sky2 = netdev_priv(dev);
3551 switch (sky2->flow_mode) {
3553 ecmd->tx_pause = ecmd->rx_pause = 0;
3556 ecmd->tx_pause = 1, ecmd->rx_pause = 0;
3559 ecmd->tx_pause = 0, ecmd->rx_pause = 1;
3562 ecmd->tx_pause = ecmd->rx_pause = 1;
3565 ecmd->autoneg = sky2->autoneg;
3568 static int sky2_set_pauseparam(struct net_device *dev,
3569 struct ethtool_pauseparam *ecmd)
3571 struct sky2_port *sky2 = netdev_priv(dev);
3573 sky2->autoneg = ecmd->autoneg;
3574 sky2->flow_mode = sky2_flow(ecmd->rx_pause, ecmd->tx_pause);
3576 if (netif_running(dev))
3577 sky2_phy_reinit(sky2);
3582 static int sky2_get_coalesce(struct net_device *dev,
3583 struct ethtool_coalesce *ecmd)
3585 struct sky2_port *sky2 = netdev_priv(dev);
3586 struct sky2_hw *hw = sky2->hw;
3588 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP)
3589 ecmd->tx_coalesce_usecs = 0;
3591 u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI);
3592 ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
3594 ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH);
3596 if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP)
3597 ecmd->rx_coalesce_usecs = 0;
3599 u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI);
3600 ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
3602 ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM);
3604 if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP)
3605 ecmd->rx_coalesce_usecs_irq = 0;
3607 u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI);
3608 ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
3611 ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM);
3616 /* Note: this affect both ports */
3617 static int sky2_set_coalesce(struct net_device *dev,
3618 struct ethtool_coalesce *ecmd)
3620 struct sky2_port *sky2 = netdev_priv(dev);
3621 struct sky2_hw *hw = sky2->hw;
3622 const u32 tmax = sky2_clk2us(hw, 0x0ffffff);
3624 if (ecmd->tx_coalesce_usecs > tmax ||
3625 ecmd->rx_coalesce_usecs > tmax ||
3626 ecmd->rx_coalesce_usecs_irq > tmax)
3629 if (ecmd->tx_max_coalesced_frames >= TX_RING_SIZE-1)
3631 if (ecmd->rx_max_coalesced_frames > RX_MAX_PENDING)
3633 if (ecmd->rx_max_coalesced_frames_irq >RX_MAX_PENDING)
3636 if (ecmd->tx_coalesce_usecs == 0)
3637 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
3639 sky2_write32(hw, STAT_TX_TIMER_INI,
3640 sky2_us2clk(hw, ecmd->tx_coalesce_usecs));
3641 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
3643 sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames);
3645 if (ecmd->rx_coalesce_usecs == 0)
3646 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP);
3648 sky2_write32(hw, STAT_LEV_TIMER_INI,
3649 sky2_us2clk(hw, ecmd->rx_coalesce_usecs));
3650 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
3652 sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames);
3654 if (ecmd->rx_coalesce_usecs_irq == 0)
3655 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP);
3657 sky2_write32(hw, STAT_ISR_TIMER_INI,
3658 sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq));
3659 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
3661 sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq);
3665 static void sky2_get_ringparam(struct net_device *dev,
3666 struct ethtool_ringparam *ering)
3668 struct sky2_port *sky2 = netdev_priv(dev);
3670 ering->rx_max_pending = RX_MAX_PENDING;
3671 ering->rx_mini_max_pending = 0;
3672 ering->rx_jumbo_max_pending = 0;
3673 ering->tx_max_pending = TX_RING_SIZE - 1;
3675 ering->rx_pending = sky2->rx_pending;
3676 ering->rx_mini_pending = 0;
3677 ering->rx_jumbo_pending = 0;
3678 ering->tx_pending = sky2->tx_pending;
3681 static int sky2_set_ringparam(struct net_device *dev,
3682 struct ethtool_ringparam *ering)
3684 struct sky2_port *sky2 = netdev_priv(dev);
3687 if (ering->rx_pending > RX_MAX_PENDING ||
3688 ering->rx_pending < 8 ||
3689 ering->tx_pending < MAX_SKB_TX_LE ||
3690 ering->tx_pending > TX_RING_SIZE - 1)
3693 if (netif_running(dev))
3696 sky2->rx_pending = ering->rx_pending;
3697 sky2->tx_pending = ering->tx_pending;
3699 if (netif_running(dev)) {
3708 static int sky2_get_regs_len(struct net_device *dev)
3714 * Returns copy of control register region
3715 * Note: ethtool_get_regs always provides full size (16k) buffer
3717 static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
3720 const struct sky2_port *sky2 = netdev_priv(dev);
3721 const void __iomem *io = sky2->hw->regs;
3726 for (b = 0; b < 128; b++) {
3727 /* This complicated switch statement is to make sure and
3728 * only access regions that are unreserved.
3729 * Some blocks are only valid on dual port cards.
3730 * and block 3 has some special diagnostic registers that
3735 /* skip diagnostic ram region */
3736 memcpy_fromio(p + 0x10, io + 0x10, 128 - 0x10);
3739 /* dual port cards only */
3740 case 5: /* Tx Arbiter 2 */
3742 case 14 ... 15: /* TX2 */
3743 case 17: case 19: /* Ram Buffer 2 */
3744 case 22 ... 23: /* Tx Ram Buffer 2 */
3745 case 25: /* Rx MAC Fifo 1 */
3746 case 27: /* Tx MAC Fifo 2 */
3747 case 31: /* GPHY 2 */
3748 case 40 ... 47: /* Pattern Ram 2 */
3749 case 52: case 54: /* TCP Segmentation 2 */
3750 case 112 ... 116: /* GMAC 2 */
3751 if (sky2->hw->ports == 1)
3754 case 0: /* Control */
3755 case 2: /* Mac address */
3756 case 4: /* Tx Arbiter 1 */
3757 case 7: /* PCI express reg */
3759 case 12 ... 13: /* TX1 */
3760 case 16: case 18:/* Rx Ram Buffer 1 */
3761 case 20 ... 21: /* Tx Ram Buffer 1 */
3762 case 24: /* Rx MAC Fifo 1 */
3763 case 26: /* Tx MAC Fifo 1 */
3764 case 28 ... 29: /* Descriptor and status unit */
3765 case 30: /* GPHY 1*/
3766 case 32 ... 39: /* Pattern Ram 1 */
3767 case 48: case 50: /* TCP Segmentation 1 */
3768 case 56 ... 60: /* PCI space */
3769 case 80 ... 84: /* GMAC 1 */
3770 memcpy_fromio(p, io, 128);
3782 /* In order to do Jumbo packets on these chips, need to turn off the
3783 * transmit store/forward. Therefore checksum offload won't work.
3785 static int no_tx_offload(struct net_device *dev)
3787 const struct sky2_port *sky2 = netdev_priv(dev);
3788 const struct sky2_hw *hw = sky2->hw;
3790 return dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U;
3793 static int sky2_set_tx_csum(struct net_device *dev, u32 data)
3795 if (data && no_tx_offload(dev))
3798 return ethtool_op_set_tx_csum(dev, data);
3802 static int sky2_set_tso(struct net_device *dev, u32 data)
3804 if (data && no_tx_offload(dev))
3807 return ethtool_op_set_tso(dev, data);
3810 static int sky2_get_eeprom_len(struct net_device *dev)
3812 struct sky2_port *sky2 = netdev_priv(dev);
3813 struct sky2_hw *hw = sky2->hw;
3816 reg2 = sky2_pci_read16(hw, PCI_DEV_REG2);
3817 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
3820 static u32 sky2_vpd_read(struct sky2_hw *hw, int cap, u16 offset)
3824 sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
3827 offset = sky2_pci_read16(hw, cap + PCI_VPD_ADDR);
3828 } while (!(offset & PCI_VPD_ADDR_F));
3830 val = sky2_pci_read32(hw, cap + PCI_VPD_DATA);
3834 static void sky2_vpd_write(struct sky2_hw *hw, int cap, u16 offset, u32 val)
3836 sky2_pci_write16(hw, cap + PCI_VPD_DATA, val);
3837 sky2_pci_write32(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
3839 offset = sky2_pci_read16(hw, cap + PCI_VPD_ADDR);
3840 } while (offset & PCI_VPD_ADDR_F);
3843 static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
3846 struct sky2_port *sky2 = netdev_priv(dev);
3847 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
3848 int length = eeprom->len;
3849 u16 offset = eeprom->offset;
3854 eeprom->magic = SKY2_EEPROM_MAGIC;
3856 while (length > 0) {
3857 u32 val = sky2_vpd_read(sky2->hw, cap, offset);
3858 int n = min_t(int, length, sizeof(val));
3860 memcpy(data, &val, n);
3868 static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
3871 struct sky2_port *sky2 = netdev_priv(dev);
3872 int cap = pci_find_capability(sky2->hw->pdev, PCI_CAP_ID_VPD);
3873 int length = eeprom->len;
3874 u16 offset = eeprom->offset;
3879 if (eeprom->magic != SKY2_EEPROM_MAGIC)
3882 while (length > 0) {
3884 int n = min_t(int, length, sizeof(val));
3886 if (n < sizeof(val))
3887 val = sky2_vpd_read(sky2->hw, cap, offset);
3888 memcpy(&val, data, n);
3890 sky2_vpd_write(sky2->hw, cap, offset, val);
3900 static const struct ethtool_ops sky2_ethtool_ops = {
3901 .get_settings = sky2_get_settings,
3902 .set_settings = sky2_set_settings,
3903 .get_drvinfo = sky2_get_drvinfo,
3904 .get_wol = sky2_get_wol,
3905 .set_wol = sky2_set_wol,
3906 .get_msglevel = sky2_get_msglevel,
3907 .set_msglevel = sky2_set_msglevel,
3908 .nway_reset = sky2_nway_reset,
3909 .get_regs_len = sky2_get_regs_len,
3910 .get_regs = sky2_get_regs,
3911 .get_link = ethtool_op_get_link,
3912 .get_eeprom_len = sky2_get_eeprom_len,
3913 .get_eeprom = sky2_get_eeprom,
3914 .set_eeprom = sky2_set_eeprom,
3915 .set_sg = ethtool_op_set_sg,
3916 .set_tx_csum = sky2_set_tx_csum,
3917 .set_tso = sky2_set_tso,
3918 .get_rx_csum = sky2_get_rx_csum,
3919 .set_rx_csum = sky2_set_rx_csum,
3920 .get_strings = sky2_get_strings,
3921 .get_coalesce = sky2_get_coalesce,
3922 .set_coalesce = sky2_set_coalesce,
3923 .get_ringparam = sky2_get_ringparam,
3924 .set_ringparam = sky2_set_ringparam,
3925 .get_pauseparam = sky2_get_pauseparam,
3926 .set_pauseparam = sky2_set_pauseparam,
3927 .phys_id = sky2_phys_id,
3928 .get_sset_count = sky2_get_sset_count,
3929 .get_ethtool_stats = sky2_get_ethtool_stats,
3932 #ifdef CONFIG_SKY2_DEBUG
3934 static struct dentry *sky2_debug;
3936 static int sky2_debug_show(struct seq_file *seq, void *v)
3938 struct net_device *dev = seq->private;
3939 const struct sky2_port *sky2 = netdev_priv(dev);
3940 struct sky2_hw *hw = sky2->hw;
3941 unsigned port = sky2->port;
3945 if (!netif_running(dev))
3948 seq_printf(seq, "IRQ src=%x mask=%x control=%x\n",
3949 sky2_read32(hw, B0_ISRC),
3950 sky2_read32(hw, B0_IMSK),
3951 sky2_read32(hw, B0_Y2_SP_ICR));
3953 napi_disable(&hw->napi);
3954 last = sky2_read16(hw, STAT_PUT_IDX);
3956 if (hw->st_idx == last)
3957 seq_puts(seq, "Status ring (empty)\n");
3959 seq_puts(seq, "Status ring\n");
3960 for (idx = hw->st_idx; idx != last && idx < STATUS_RING_SIZE;
3961 idx = RING_NEXT(idx, STATUS_RING_SIZE)) {
3962 const struct sky2_status_le *le = hw->st_le + idx;
3963 seq_printf(seq, "[%d] %#x %d %#x\n",
3964 idx, le->opcode, le->length, le->status);
3966 seq_puts(seq, "\n");
3969 seq_printf(seq, "Tx ring pending=%u...%u report=%d done=%d\n",
3970 sky2->tx_cons, sky2->tx_prod,
3971 sky2_read16(hw, port == 0 ? STAT_TXA1_RIDX : STAT_TXA2_RIDX),
3972 sky2_read16(hw, Q_ADDR(txqaddr[port], Q_DONE)));
3974 /* Dump contents of tx ring */
3976 for (idx = sky2->tx_next; idx != sky2->tx_prod && idx < TX_RING_SIZE;
3977 idx = RING_NEXT(idx, TX_RING_SIZE)) {
3978 const struct sky2_tx_le *le = sky2->tx_le + idx;
3979 u32 a = le32_to_cpu(le->addr);
3982 seq_printf(seq, "%u:", idx);
3985 switch(le->opcode & ~HW_OWNER) {
3987 seq_printf(seq, " %#x:", a);
3990 seq_printf(seq, " mtu=%d", a);
3993 seq_printf(seq, " vlan=%d", be16_to_cpu(le->length));
3996 seq_printf(seq, " csum=%#x", a);
3999 seq_printf(seq, " tso=%#x(%d)", a, le16_to_cpu(le->length));
4002 seq_printf(seq, " %#x(%d)", a, le16_to_cpu(le->length));
4005 seq_printf(seq, " frag=%#x(%d)", a, le16_to_cpu(le->length));
4008 seq_printf(seq, " op=%#x,%#x(%d)", le->opcode,
4009 a, le16_to_cpu(le->length));
4012 if (le->ctrl & EOP) {
4013 seq_putc(seq, '\n');
4018 seq_printf(seq, "\nRx ring hw get=%d put=%d last=%d\n",
4019 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_GET_IDX)),
4020 last = sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_PUT_IDX)),
4021 sky2_read16(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_LAST_IDX)));
4023 sky2_read32(hw, B0_Y2_SP_LISR);
4024 napi_enable(&hw->napi);
4028 static int sky2_debug_open(struct inode *inode, struct file *file)
4030 return single_open(file, sky2_debug_show, inode->i_private);
4033 static const struct file_operations sky2_debug_fops = {
4034 .owner = THIS_MODULE,
4035 .open = sky2_debug_open,
4037 .llseek = seq_lseek,
4038 .release = single_release,
4042 * Use network device events to create/remove/rename
4043 * debugfs file entries
4045 static int sky2_device_event(struct notifier_block *unused,
4046 unsigned long event, void *ptr)
4048 struct net_device *dev = ptr;
4049 struct sky2_port *sky2 = netdev_priv(dev);
4051 if (dev->open != sky2_up || !sky2_debug)
4055 case NETDEV_CHANGENAME:
4056 if (sky2->debugfs) {
4057 sky2->debugfs = debugfs_rename(sky2_debug, sky2->debugfs,
4058 sky2_debug, dev->name);
4062 case NETDEV_GOING_DOWN:
4063 if (sky2->debugfs) {
4064 printk(KERN_DEBUG PFX "%s: remove debugfs\n",
4066 debugfs_remove(sky2->debugfs);
4067 sky2->debugfs = NULL;
4072 sky2->debugfs = debugfs_create_file(dev->name, S_IRUGO,
4075 if (IS_ERR(sky2->debugfs))
4076 sky2->debugfs = NULL;
4082 static struct notifier_block sky2_notifier = {
4083 .notifier_call = sky2_device_event,
4087 static __init void sky2_debug_init(void)
4091 ent = debugfs_create_dir("sky2", NULL);
4092 if (!ent || IS_ERR(ent))
4096 register_netdevice_notifier(&sky2_notifier);
4099 static __exit void sky2_debug_cleanup(void)
4102 unregister_netdevice_notifier(&sky2_notifier);
4103 debugfs_remove(sky2_debug);
4109 #define sky2_debug_init()
4110 #define sky2_debug_cleanup()
4114 /* Initialize network device */
4115 static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
4117 int highmem, int wol)
4119 struct sky2_port *sky2;
4120 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
4123 dev_err(&hw->pdev->dev, "etherdev alloc failed\n");
4127 SET_NETDEV_DEV(dev, &hw->pdev->dev);
4128 dev->irq = hw->pdev->irq;
4129 dev->open = sky2_up;
4130 dev->stop = sky2_down;
4131 dev->do_ioctl = sky2_ioctl;
4132 dev->hard_start_xmit = sky2_xmit_frame;
4133 dev->set_multicast_list = sky2_set_multicast;
4134 dev->set_mac_address = sky2_set_mac_address;
4135 dev->change_mtu = sky2_change_mtu;
4136 SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
4137 dev->tx_timeout = sky2_tx_timeout;
4138 dev->watchdog_timeo = TX_WATCHDOG;
4139 #ifdef CONFIG_NET_POLL_CONTROLLER
4141 dev->poll_controller = sky2_netpoll;
4144 sky2 = netdev_priv(dev);
4147 sky2->msg_enable = netif_msg_init(debug, default_msg);
4149 /* Auto speed and flow control */
4150 sky2->autoneg = AUTONEG_ENABLE;
4151 sky2->flow_mode = FC_BOTH;
4155 sky2->advertising = sky2_supported_modes(hw);
4156 sky2->rx_csum = (hw->chip_id != CHIP_ID_YUKON_XL);
4159 spin_lock_init(&sky2->phy_lock);
4160 sky2->tx_pending = TX_DEF_PENDING;
4161 sky2->rx_pending = RX_DEF_PENDING;
4163 hw->dev[port] = dev;
4167 dev->features |= NETIF_F_TSO | NETIF_F_IP_CSUM | NETIF_F_SG;
4169 dev->features |= NETIF_F_HIGHDMA;
4171 #ifdef SKY2_VLAN_TAG_USED
4172 /* The workaround for FE+ status conflicts with VLAN tag detection. */
4173 if (!(sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
4174 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0)) {
4175 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
4176 dev->vlan_rx_register = sky2_vlan_rx_register;
4180 /* read the mac address */
4181 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
4182 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
4187 static void __devinit sky2_show_addr(struct net_device *dev)
4189 const struct sky2_port *sky2 = netdev_priv(dev);
4190 DECLARE_MAC_BUF(mac);
4192 if (netif_msg_probe(sky2))
4193 printk(KERN_INFO PFX "%s: addr %s\n",
4194 dev->name, print_mac(mac, dev->dev_addr));
4197 /* Handle software interrupt used during MSI test */
4198 static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id)
4200 struct sky2_hw *hw = dev_id;
4201 u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
4206 if (status & Y2_IS_IRQ_SW) {
4207 hw->flags |= SKY2_HW_USE_MSI;
4208 wake_up(&hw->msi_wait);
4209 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4211 sky2_write32(hw, B0_Y2_SP_ICR, 2);
4216 /* Test interrupt path by forcing a a software IRQ */
4217 static int __devinit sky2_test_msi(struct sky2_hw *hw)
4219 struct pci_dev *pdev = hw->pdev;
4222 init_waitqueue_head (&hw->msi_wait);
4224 sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
4226 err = request_irq(pdev->irq, sky2_test_intr, 0, DRV_NAME, hw);
4228 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4232 sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
4233 sky2_read8(hw, B0_CTST);
4235 wait_event_timeout(hw->msi_wait, (hw->flags & SKY2_HW_USE_MSI), HZ/10);
4237 if (!(hw->flags & SKY2_HW_USE_MSI)) {
4238 /* MSI test failed, go back to INTx mode */
4239 dev_info(&pdev->dev, "No interrupt generated using MSI, "
4240 "switching to INTx mode.\n");
4243 sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
4246 sky2_write32(hw, B0_IMSK, 0);
4247 sky2_read32(hw, B0_IMSK);
4249 free_irq(pdev->irq, hw);
4254 static int __devinit pci_wake_enabled(struct pci_dev *dev)
4256 int pm = pci_find_capability(dev, PCI_CAP_ID_PM);
4261 if (pci_read_config_word(dev, pm + PCI_PM_CTRL, &value))
4263 return value & PCI_PM_CTRL_PME_ENABLE;
4266 /* This driver supports yukon2 chipset only */
4267 static const char *sky2_name(u8 chipid, char *buf, int sz)
4269 const char *name[] = {
4271 "EC Ultra", /* 0xb4 */
4272 "Extreme", /* 0xb5 */
4276 "Supreme", /* 0xb9 */
4280 if (chipid >= CHIP_ID_YUKON_XL && chipid < CHIP_ID_YUKON_UL_2)
4281 strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
4283 snprintf(buf, sz, "(chip %#x)", chipid);
4287 static int __devinit sky2_probe(struct pci_dev *pdev,
4288 const struct pci_device_id *ent)
4290 struct net_device *dev;
4292 int err, using_dac = 0, wol_default;
4295 err = pci_enable_device(pdev);
4297 dev_err(&pdev->dev, "cannot enable PCI device\n");
4301 err = pci_request_regions(pdev, DRV_NAME);
4303 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
4304 goto err_out_disable;
4307 pci_set_master(pdev);
4309 if (sizeof(dma_addr_t) > sizeof(u32) &&
4310 !(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
4312 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4314 dev_err(&pdev->dev, "unable to obtain 64 bit DMA "
4315 "for consistent allocations\n");
4316 goto err_out_free_regions;
4319 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4321 dev_err(&pdev->dev, "no usable DMA configuration\n");
4322 goto err_out_free_regions;
4326 wol_default = pci_wake_enabled(pdev) ? WAKE_MAGIC : 0;
4329 hw = kzalloc(sizeof(*hw), GFP_KERNEL);
4331 dev_err(&pdev->dev, "cannot allocate hardware struct\n");
4332 goto err_out_free_regions;
4337 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
4339 dev_err(&pdev->dev, "cannot map device registers\n");
4340 goto err_out_free_hw;
4344 /* The sk98lin vendor driver uses hardware byte swapping but
4345 * this driver uses software swapping.
4349 reg = sky2_pci_read32(hw, PCI_DEV_REG2);
4350 reg &= ~PCI_REV_DESC;
4351 sky2_pci_write32(hw, PCI_DEV_REG2, reg);
4355 /* ring for status responses */
4356 hw->st_le = pci_alloc_consistent(pdev, STATUS_LE_BYTES, &hw->st_dma);
4358 goto err_out_iounmap;
4360 err = sky2_init(hw);
4362 goto err_out_iounmap;
4364 dev_info(&pdev->dev, "v%s addr 0x%llx irq %d Yukon-2 %s rev %d\n",
4365 DRV_VERSION, (unsigned long long)pci_resource_start(pdev, 0),
4366 pdev->irq, sky2_name(hw->chip_id, buf1, sizeof(buf1)),
4371 dev = sky2_init_netdev(hw, 0, using_dac, wol_default);
4374 goto err_out_free_pci;
4377 if (!disable_msi && pci_enable_msi(pdev) == 0) {
4378 err = sky2_test_msi(hw);
4379 if (err == -EOPNOTSUPP)
4380 pci_disable_msi(pdev);
4382 goto err_out_free_netdev;
4385 err = register_netdev(dev);
4387 dev_err(&pdev->dev, "cannot register net device\n");
4388 goto err_out_free_netdev;
4391 netif_napi_add(dev, &hw->napi, sky2_poll, NAPI_WEIGHT);
4393 err = request_irq(pdev->irq, sky2_intr,
4394 (hw->flags & SKY2_HW_USE_MSI) ? 0 : IRQF_SHARED,
4397 dev_err(&pdev->dev, "cannot assign irq %d\n", pdev->irq);
4398 goto err_out_unregister;
4400 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4401 napi_enable(&hw->napi);
4403 sky2_show_addr(dev);
4405 if (hw->ports > 1) {
4406 struct net_device *dev1;
4408 dev1 = sky2_init_netdev(hw, 1, using_dac, wol_default);
4410 dev_warn(&pdev->dev, "allocation for second device failed\n");
4411 else if ((err = register_netdev(dev1))) {
4412 dev_warn(&pdev->dev,
4413 "register of second port failed (%d)\n", err);
4417 sky2_show_addr(dev1);
4420 setup_timer(&hw->watchdog_timer, sky2_watchdog, (unsigned long) hw);
4421 INIT_WORK(&hw->restart_work, sky2_restart);
4423 pci_set_drvdata(pdev, hw);
4428 if (hw->flags & SKY2_HW_USE_MSI)
4429 pci_disable_msi(pdev);
4430 unregister_netdev(dev);
4431 err_out_free_netdev:
4434 sky2_write8(hw, B0_CTST, CS_RST_SET);
4435 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4440 err_out_free_regions:
4441 pci_release_regions(pdev);
4443 pci_disable_device(pdev);
4445 pci_set_drvdata(pdev, NULL);
4449 static void __devexit sky2_remove(struct pci_dev *pdev)
4451 struct sky2_hw *hw = pci_get_drvdata(pdev);
4457 del_timer_sync(&hw->watchdog_timer);
4458 cancel_work_sync(&hw->restart_work);
4460 for (i = hw->ports-1; i >= 0; --i)
4461 unregister_netdev(hw->dev[i]);
4463 sky2_write32(hw, B0_IMSK, 0);
4467 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
4468 sky2_write8(hw, B0_CTST, CS_RST_SET);
4469 sky2_read8(hw, B0_CTST);
4471 free_irq(pdev->irq, hw);
4472 if (hw->flags & SKY2_HW_USE_MSI)
4473 pci_disable_msi(pdev);
4474 pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
4475 pci_release_regions(pdev);
4476 pci_disable_device(pdev);
4478 for (i = hw->ports-1; i >= 0; --i)
4479 free_netdev(hw->dev[i]);
4484 pci_set_drvdata(pdev, NULL);
4488 static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
4490 struct sky2_hw *hw = pci_get_drvdata(pdev);
4496 del_timer_sync(&hw->watchdog_timer);
4497 cancel_work_sync(&hw->restart_work);
4499 for (i = 0; i < hw->ports; i++) {
4500 struct net_device *dev = hw->dev[i];
4501 struct sky2_port *sky2 = netdev_priv(dev);
4503 netif_device_detach(dev);
4504 if (netif_running(dev))
4508 sky2_wol_init(sky2);
4513 sky2_write32(hw, B0_IMSK, 0);
4514 napi_disable(&hw->napi);
4517 pci_save_state(pdev);
4518 pci_enable_wake(pdev, pci_choose_state(pdev, state), wol);
4519 sky2_power_state(hw, pci_choose_state(pdev, state));
4524 static int sky2_resume(struct pci_dev *pdev)
4526 struct sky2_hw *hw = pci_get_drvdata(pdev);
4532 sky2_power_state(hw, PCI_D0);
4534 err = pci_restore_state(pdev);
4538 pci_enable_wake(pdev, PCI_D0, 0);
4540 /* Re-enable all clocks */
4541 if (hw->chip_id == CHIP_ID_YUKON_EX ||
4542 hw->chip_id == CHIP_ID_YUKON_EC_U ||
4543 hw->chip_id == CHIP_ID_YUKON_FE_P)
4544 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
4547 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
4548 napi_enable(&hw->napi);
4550 for (i = 0; i < hw->ports; i++) {
4551 struct net_device *dev = hw->dev[i];
4553 netif_device_attach(dev);
4554 if (netif_running(dev)) {
4557 printk(KERN_ERR PFX "%s: could not up: %d\n",
4569 dev_err(&pdev->dev, "resume failed (%d)\n", err);
4570 pci_disable_device(pdev);
4575 static void sky2_shutdown(struct pci_dev *pdev)
4577 struct sky2_hw *hw = pci_get_drvdata(pdev);
4583 del_timer_sync(&hw->watchdog_timer);
4585 for (i = 0; i < hw->ports; i++) {
4586 struct net_device *dev = hw->dev[i];
4587 struct sky2_port *sky2 = netdev_priv(dev);
4591 sky2_wol_init(sky2);
4598 pci_enable_wake(pdev, PCI_D3hot, wol);
4599 pci_enable_wake(pdev, PCI_D3cold, wol);
4601 pci_disable_device(pdev);
4602 sky2_power_state(hw, PCI_D3hot);
4605 static struct pci_driver sky2_driver = {
4607 .id_table = sky2_id_table,
4608 .probe = sky2_probe,
4609 .remove = __devexit_p(sky2_remove),
4611 .suspend = sky2_suspend,
4612 .resume = sky2_resume,
4614 .shutdown = sky2_shutdown,
4617 static int __init sky2_init_module(void)
4620 return pci_register_driver(&sky2_driver);
4623 static void __exit sky2_cleanup_module(void)
4625 pci_unregister_driver(&sky2_driver);
4626 sky2_debug_cleanup();
4629 module_init(sky2_init_module);
4630 module_exit(sky2_cleanup_module);
4632 MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
4633 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
4634 MODULE_LICENSE("GPL");
4635 MODULE_VERSION(DRV_VERSION);