2 * iPXE driver for Marvell Yukon 2 chipset. Derived from Linux sky2 driver
3 * (v1.22), which was based on earlier sk98lin and skge drivers.
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 * Modified for iPXE, April 2009 by Joshua Oreman
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
28 FILE_LICENCE ( GPL2_ONLY );
34 #include <ipxe/ethernet.h>
35 #include <ipxe/if_ether.h>
36 #include <ipxe/iobuf.h>
37 #include <ipxe/malloc.h>
44 #define DRV_NAME "sky2"
45 #define DRV_VERSION "1.22"
46 #define PFX DRV_NAME " "
49 * The Yukon II chipset takes 64 bit command blocks (called list elements)
50 * that are organized into three (receive, transmit, status) different rings
53 * Each ring start must be aligned to a 4k boundary. You will get mysterious
54 * "invalid LE" errors if they're not.
56 * The card silently forces each ring size to be at least 128. If you
57 * act as though one of them is smaller (by setting the below
58 * #defines) you'll get bad bugs.
61 #define RX_LE_SIZE 128
62 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
63 #define RX_RING_ALIGN 4096
64 #define RX_PENDING (RX_LE_SIZE/6 - 2)
66 #define TX_RING_SIZE 128
67 #define TX_PENDING (TX_RING_SIZE - 1)
68 #define TX_RING_ALIGN 4096
69 #define MAX_SKB_TX_LE 4
71 #define STATUS_RING_SIZE 512 /* 2 ports * (TX + RX) */
72 #define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
73 #define STATUS_RING_ALIGN 4096
74 #define PHY_RETRIES 1000
76 #define SKY2_EEPROM_MAGIC 0x9955aabb
79 #define RING_NEXT(x,s) (((x)+1) & ((s)-1))
81 static struct pci_device_id sky2_id_table[] = {
82 PCI_ROM(0x1148, 0x9000, "sk9sxx", "Syskonnect SK-9Sxx", 0),
83 PCI_ROM(0x1148, 0x9e00, "sk9exx", "Syskonnect SK-9Exx", 0),
84 PCI_ROM(0x1186, 0x4b00, "dge560t", "D-Link DGE-560T", 0),
85 PCI_ROM(0x1186, 0x4001, "dge550sx", "D-Link DGE-550SX", 0),
86 PCI_ROM(0x1186, 0x4b02, "dge560sx", "D-Link DGE-560SX", 0),
87 PCI_ROM(0x1186, 0x4b03, "dge550t", "D-Link DGE-550T", 0),
88 PCI_ROM(0x11ab, 0x4340, "m88e8021", "Marvell 88E8021", 0),
89 PCI_ROM(0x11ab, 0x4341, "m88e8022", "Marvell 88E8022", 0),
90 PCI_ROM(0x11ab, 0x4342, "m88e8061", "Marvell 88E8061", 0),
91 PCI_ROM(0x11ab, 0x4343, "m88e8062", "Marvell 88E8062", 0),
92 PCI_ROM(0x11ab, 0x4344, "m88e8021b", "Marvell 88E8021", 0),
93 PCI_ROM(0x11ab, 0x4345, "m88e8022b", "Marvell 88E8022", 0),
94 PCI_ROM(0x11ab, 0x4346, "m88e8061b", "Marvell 88E8061", 0),
95 PCI_ROM(0x11ab, 0x4347, "m88e8062b", "Marvell 88E8062", 0),
96 PCI_ROM(0x11ab, 0x4350, "m88e8035", "Marvell 88E8035", 0),
97 PCI_ROM(0x11ab, 0x4351, "m88e8036", "Marvell 88E8036", 0),
98 PCI_ROM(0x11ab, 0x4352, "m88e8038", "Marvell 88E8038", 0),
99 PCI_ROM(0x11ab, 0x4353, "m88e8039", "Marvell 88E8039", 0),
100 PCI_ROM(0x11ab, 0x4354, "m88e8040", "Marvell 88E8040", 0),
101 PCI_ROM(0x11ab, 0x4355, "m88e8040t", "Marvell 88E8040T", 0),
102 PCI_ROM(0x11ab, 0x4356, "m88ec033", "Marvel 88EC033", 0),
103 PCI_ROM(0x11ab, 0x4357, "m88e8042", "Marvell 88E8042", 0),
104 PCI_ROM(0x11ab, 0x435a, "m88e8048", "Marvell 88E8048", 0),
105 PCI_ROM(0x11ab, 0x4360, "m88e8052", "Marvell 88E8052", 0),
106 PCI_ROM(0x11ab, 0x4361, "m88e8050", "Marvell 88E8050", 0),
107 PCI_ROM(0x11ab, 0x4362, "m88e8053", "Marvell 88E8053", 0),
108 PCI_ROM(0x11ab, 0x4363, "m88e8055", "Marvell 88E8055", 0),
109 PCI_ROM(0x11ab, 0x4364, "m88e8056", "Marvell 88E8056", 0),
110 PCI_ROM(0x11ab, 0x4365, "m88e8070", "Marvell 88E8070", 0),
111 PCI_ROM(0x11ab, 0x4366, "m88ec036", "Marvell 88EC036", 0),
112 PCI_ROM(0x11ab, 0x4367, "m88ec032", "Marvell 88EC032", 0),
113 PCI_ROM(0x11ab, 0x4368, "m88ec034", "Marvell 88EC034", 0),
114 PCI_ROM(0x11ab, 0x4369, "m88ec042", "Marvell 88EC042", 0),
115 PCI_ROM(0x11ab, 0x436a, "m88e8058", "Marvell 88E8058", 0),
116 PCI_ROM(0x11ab, 0x436b, "m88e8071", "Marvell 88E8071", 0),
117 PCI_ROM(0x11ab, 0x436c, "m88e8072", "Marvell 88E8072", 0),
118 PCI_ROM(0x11ab, 0x436d, "m88e8055b", "Marvell 88E8055", 0),
119 PCI_ROM(0x11ab, 0x4370, "m88e8075", "Marvell 88E8075", 0),
120 PCI_ROM(0x11ab, 0x4380, "m88e8057", "Marvell 88E8057", 0)
123 /* Avoid conditionals by using array */
124 static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
125 static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
126 static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 };
128 static void sky2_set_multicast(struct net_device *dev);
130 /* Access to PHY via serial interconnect */
131 static int gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
135 gma_write16(hw, port, GM_SMI_DATA, val);
136 gma_write16(hw, port, GM_SMI_CTRL,
137 GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | GM_SMI_CT_REG_AD(reg));
139 for (i = 0; i < PHY_RETRIES; i++) {
140 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
144 if (!(ctrl & GM_SMI_CT_BUSY))
150 DBG(PFX "%s: phy write timeout\n", hw->dev[port]->name);
154 DBG(PFX "%s: phy I/O error\n", hw->dev[port]->name);
158 static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val)
162 gma_write16(hw, port, GM_SMI_CTRL, GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
163 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
165 for (i = 0; i < PHY_RETRIES; i++) {
166 u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL);
170 if (ctrl & GM_SMI_CT_RD_VAL) {
171 *val = gma_read16(hw, port, GM_SMI_DATA);
178 DBG(PFX "%s: phy read timeout\n", hw->dev[port]->name);
181 DBG(PFX "%s: phy I/O error\n", hw->dev[port]->name);
185 static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
188 __gm_phy_read(hw, port, reg, &v);
193 static void sky2_power_on(struct sky2_hw *hw)
195 /* switch power to VCC (WA for VAUX problem) */
196 sky2_write8(hw, B0_POWER_CTRL,
197 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
199 /* disable Core Clock Division, */
200 sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
202 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
203 /* enable bits are inverted */
204 sky2_write8(hw, B2_Y2_CLK_GATE,
205 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
206 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
207 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
209 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
211 if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
214 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
216 reg = sky2_pci_read32(hw, PCI_DEV_REG4);
217 /* set all bits to 0 except bits 15..12 and 8 */
218 reg &= P_ASPM_CONTROL_MSK;
219 sky2_pci_write32(hw, PCI_DEV_REG4, reg);
221 reg = sky2_pci_read32(hw, PCI_DEV_REG5);
222 /* set all bits to 0 except bits 28 & 27 */
223 reg &= P_CTL_TIM_VMAIN_AV_MSK;
224 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
226 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
228 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
229 reg = sky2_read32(hw, B2_GP_IO);
230 reg |= GLB_GPIO_STAT_RACE_DIS;
231 sky2_write32(hw, B2_GP_IO, reg);
233 sky2_read32(hw, B2_GP_IO);
237 static void sky2_power_aux(struct sky2_hw *hw)
239 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
240 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
242 /* enable bits are inverted */
243 sky2_write8(hw, B2_Y2_CLK_GATE,
244 Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
245 Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
246 Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
248 /* switch power to VAUX */
249 if (sky2_read16(hw, B0_CTST) & Y2_VAUX_AVAIL)
250 sky2_write8(hw, B0_POWER_CTRL,
251 (PC_VAUX_ENA | PC_VCC_ENA |
252 PC_VAUX_ON | PC_VCC_OFF));
255 static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port)
259 /* disable all GMAC IRQ's */
260 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
262 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
263 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
264 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
265 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
267 reg = gma_read16(hw, port, GM_RX_CTRL);
268 reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
269 gma_write16(hw, port, GM_RX_CTRL, reg);
272 /* flow control to advertise bits */
273 static const u16 copper_fc_adv[] = {
275 [FC_TX] = PHY_M_AN_ASP,
276 [FC_RX] = PHY_M_AN_PC,
277 [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP,
280 /* flow control to advertise bits when using 1000BaseX */
281 static const u16 fiber_fc_adv[] = {
282 [FC_NONE] = PHY_M_P_NO_PAUSE_X,
283 [FC_TX] = PHY_M_P_ASYM_MD_X,
284 [FC_RX] = PHY_M_P_SYM_MD_X,
285 [FC_BOTH] = PHY_M_P_BOTH_MD_X,
288 /* flow control to GMA disable bits */
289 static const u16 gm_fc_disable[] = {
290 [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS,
291 [FC_TX] = GM_GPCR_FC_RX_DIS,
292 [FC_RX] = GM_GPCR_FC_TX_DIS,
297 static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
299 struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
300 u16 ctrl, ct1000, adv, pg, ledctrl, ledover, reg;
302 if (sky2->autoneg == AUTONEG_ENABLE &&
303 !(hw->flags & SKY2_HW_NEWER_PHY)) {
304 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
306 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
308 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
310 /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */
311 if (hw->chip_id == CHIP_ID_YUKON_EC)
312 /* set downshift counter to 3x and enable downshift */
313 ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
315 /* set master & slave downshift counter to 1x */
316 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
318 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
321 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
322 if (sky2_is_copper(hw)) {
323 if (!(hw->flags & SKY2_HW_GIGABIT)) {
324 /* enable automatic crossover */
325 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
327 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
328 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
331 /* Enable Class A driver for FE+ A0 */
332 spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2);
333 spec |= PHY_M_FESC_SEL_CL_A;
334 gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec);
337 /* disable energy detect */
338 ctrl &= ~PHY_M_PC_EN_DET_MSK;
340 /* enable automatic crossover */
341 ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
343 /* downshift on PHY 88E1112 and 88E1149 is changed */
344 if (sky2->autoneg == AUTONEG_ENABLE
345 && (hw->flags & SKY2_HW_NEWER_PHY)) {
346 /* set downshift counter to 3x and enable downshift */
347 ctrl &= ~PHY_M_PC_DSC_MSK;
348 ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
352 /* workaround for deviation #4.88 (CRC errors) */
353 /* disable Automatic Crossover */
355 ctrl &= ~PHY_M_PC_MDIX_MSK;
358 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
360 /* special setup for PHY 88E1112 Fiber */
361 if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) {
362 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
364 /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
365 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
366 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
367 ctrl &= ~PHY_M_MAC_MD_MSK;
368 ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
369 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
371 if (hw->pmd_type == 'P') {
372 /* select page 1 to access Fiber registers */
373 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
375 /* for SFP-module set SIGDET polarity to low */
376 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
377 ctrl |= PHY_M_FIB_SIGD_POL;
378 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
381 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
389 if (sky2->autoneg == AUTONEG_ENABLE) {
390 if (sky2_is_copper(hw)) {
391 if (sky2->advertising & ADVERTISED_1000baseT_Full)
392 ct1000 |= PHY_M_1000C_AFD;
393 if (sky2->advertising & ADVERTISED_1000baseT_Half)
394 ct1000 |= PHY_M_1000C_AHD;
395 if (sky2->advertising & ADVERTISED_100baseT_Full)
396 adv |= PHY_M_AN_100_FD;
397 if (sky2->advertising & ADVERTISED_100baseT_Half)
398 adv |= PHY_M_AN_100_HD;
399 if (sky2->advertising & ADVERTISED_10baseT_Full)
400 adv |= PHY_M_AN_10_FD;
401 if (sky2->advertising & ADVERTISED_10baseT_Half)
402 adv |= PHY_M_AN_10_HD;
404 adv |= copper_fc_adv[sky2->flow_mode];
405 } else { /* special defines for FIBER (88E1040S only) */
406 if (sky2->advertising & ADVERTISED_1000baseT_Full)
407 adv |= PHY_M_AN_1000X_AFD;
408 if (sky2->advertising & ADVERTISED_1000baseT_Half)
409 adv |= PHY_M_AN_1000X_AHD;
411 adv |= fiber_fc_adv[sky2->flow_mode];
414 /* Restart Auto-negotiation */
415 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
417 /* forced speed/duplex settings */
418 ct1000 = PHY_M_1000C_MSE;
420 /* Disable auto update for duplex flow control and speed */
421 reg |= GM_GPCR_AU_ALL_DIS;
423 switch (sky2->speed) {
425 ctrl |= PHY_CT_SP1000;
426 reg |= GM_GPCR_SPEED_1000;
429 ctrl |= PHY_CT_SP100;
430 reg |= GM_GPCR_SPEED_100;
434 if (sky2->duplex == DUPLEX_FULL) {
435 reg |= GM_GPCR_DUP_FULL;
436 ctrl |= PHY_CT_DUP_MD;
437 } else if (sky2->speed < SPEED_1000)
438 sky2->flow_mode = FC_NONE;
441 reg |= gm_fc_disable[sky2->flow_mode];
443 /* Forward pause packets to GMAC? */
444 if (sky2->flow_mode & FC_RX)
445 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
447 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
450 gma_write16(hw, port, GM_GP_CTRL, reg);
452 if (hw->flags & SKY2_HW_GIGABIT)
453 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
455 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
456 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
458 /* Setup Phy LED's */
459 ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
462 switch (hw->chip_id) {
463 case CHIP_ID_YUKON_FE:
464 /* on 88E3082 these bits are at 11..9 (shifted left) */
465 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
467 ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
469 /* delete ACT LED control bits */
470 ctrl &= ~PHY_M_FELP_LED1_MSK;
471 /* change ACT LED control to blink mode */
472 ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
473 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
476 case CHIP_ID_YUKON_FE_P:
477 /* Enable Link Partner Next Page */
478 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
479 ctrl |= PHY_M_PC_ENA_LIP_NP;
481 /* disable Energy Detect and enable scrambler */
482 ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB);
483 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
485 /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */
486 ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) |
487 PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) |
488 PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED);
490 gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
493 case CHIP_ID_YUKON_XL:
494 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
496 /* select page 3 to access LED control register */
497 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
499 /* set LED Function Control register */
500 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
501 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
502 PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
503 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
504 PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
506 /* set Polarity Control register */
507 gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
508 (PHY_M_POLC_LS1_P_MIX(4) |
509 PHY_M_POLC_IS0_P_MIX(4) |
510 PHY_M_POLC_LOS_CTRL(2) |
511 PHY_M_POLC_INIT_CTRL(2) |
512 PHY_M_POLC_STA1_CTRL(2) |
513 PHY_M_POLC_STA0_CTRL(2)));
515 /* restore page register */
516 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
519 case CHIP_ID_YUKON_EC_U:
520 case CHIP_ID_YUKON_EX:
521 case CHIP_ID_YUKON_SUPR:
522 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
524 /* select page 3 to access LED control register */
525 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
527 /* set LED Function Control register */
528 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
529 (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
530 PHY_M_LEDC_INIT_CTRL(8) | /* 10 Mbps */
531 PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
532 PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */
534 /* set Blink Rate in LED Timer Control Register */
535 gm_phy_write(hw, port, PHY_MARV_INT_MASK,
536 ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS));
537 /* restore page register */
538 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg);
542 /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
543 ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
545 /* turn off the Rx LED (LED_RX) */
546 ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
549 if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_UL_2) {
550 /* apply fixes in PHY AFE */
551 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255);
553 /* increase differential signal amplitude in 10BASE-T */
554 gm_phy_write(hw, port, 0x18, 0xaa99);
555 gm_phy_write(hw, port, 0x17, 0x2011);
557 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
558 /* fix for IEEE A/B Symmetry failure in 1000BASE-T */
559 gm_phy_write(hw, port, 0x18, 0xa204);
560 gm_phy_write(hw, port, 0x17, 0x2002);
563 /* set page register to 0 */
564 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
565 } else if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
566 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
567 /* apply workaround for integrated resistors calibration */
568 gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17);
569 gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60);
570 } else if (hw->chip_id != CHIP_ID_YUKON_EX &&
571 hw->chip_id < CHIP_ID_YUKON_SUPR) {
572 /* no effect on Yukon-XL */
573 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
575 if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
576 /* turn on 100 Mbps LED (LED_LINK100) */
577 ledover |= PHY_M_LED_MO_100(MO_LED_ON);
581 gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
585 /* Enable phy interrupt on auto-negotiation complete (or link up) */
586 if (sky2->autoneg == AUTONEG_ENABLE)
587 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
589 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
592 static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
593 static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA };
595 static void sky2_phy_power_up(struct sky2_hw *hw, unsigned port)
599 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
600 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
601 reg1 &= ~phy_power[port];
603 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
604 reg1 |= coma_mode[port];
606 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
607 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
608 sky2_pci_read32(hw, PCI_DEV_REG1);
610 if (hw->chip_id == CHIP_ID_YUKON_FE)
611 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_ANE);
612 else if (hw->flags & SKY2_HW_ADV_POWER_CTL)
613 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
616 static void sky2_phy_power_down(struct sky2_hw *hw, unsigned port)
621 /* release GPHY Control reset */
622 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
624 /* release GMAC reset */
625 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
627 if (hw->flags & SKY2_HW_NEWER_PHY) {
628 /* select page 2 to access MAC control register */
629 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
631 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
632 /* allow GMII Power Down */
633 ctrl &= ~PHY_M_MAC_GMIF_PUP;
634 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
636 /* set page register back to 0 */
637 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
640 /* setup General Purpose Control Register */
641 gma_write16(hw, port, GM_GP_CTRL,
642 GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 | GM_GPCR_AU_ALL_DIS);
644 if (hw->chip_id != CHIP_ID_YUKON_EC) {
645 if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
646 /* select page 2 to access MAC control register */
647 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
649 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
650 /* enable Power Down */
651 ctrl |= PHY_M_PC_POW_D_ENA;
652 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
654 /* set page register back to 0 */
655 gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0);
658 /* set IEEE compatible Power Down Mode (dev. #4.99) */
659 gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_PDOWN);
662 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
663 reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
664 reg1 |= phy_power[port]; /* set PHY to PowerDown/COMA Mode */
665 sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
666 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
669 static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
671 if ( (hw->chip_id == CHIP_ID_YUKON_EX &&
672 hw->chip_rev != CHIP_REV_YU_EX_A0) ||
673 hw->chip_id == CHIP_ID_YUKON_FE_P ||
674 hw->chip_id == CHIP_ID_YUKON_SUPR) {
675 /* disable jumbo frames on devices that support them */
676 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
677 TX_JUMBO_DIS | TX_STFW_ENA);
679 sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA);
683 static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
688 const u8 *addr = hw->dev[port]->ll_addr;
690 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
691 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
693 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
695 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0 && port == 1) {
696 /* WA DEV_472 -- looks like crossed wires on port 2 */
697 /* clear GMAC 1 Control reset */
698 sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
700 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
701 sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
702 } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
703 gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
704 gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
707 sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
709 /* Enable Transmit FIFO Underrun */
710 sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
712 sky2_phy_power_up(hw, port);
713 sky2_phy_init(hw, port);
716 reg = gma_read16(hw, port, GM_PHY_ADDR);
717 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
719 for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
720 gma_read16(hw, port, i);
721 gma_write16(hw, port, GM_PHY_ADDR, reg);
723 /* transmit control */
724 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
726 /* receive control reg: unicast + multicast + no FCS */
727 gma_write16(hw, port, GM_RX_CTRL,
728 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
730 /* transmit flow control */
731 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
733 /* transmit parameter */
734 gma_write16(hw, port, GM_TX_PARAM,
735 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
736 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
737 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF) |
738 TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
740 /* serial mode register */
741 reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
742 GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
744 gma_write16(hw, port, GM_SERIAL_MODE, reg);
746 /* virtual address for data */
747 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
749 /* physical address: used for pause frames */
750 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
752 /* ignore counter overflows */
753 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
754 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
755 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
757 /* Configure Rx MAC FIFO */
758 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
759 rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
760 if (hw->chip_id == CHIP_ID_YUKON_EX ||
761 hw->chip_id == CHIP_ID_YUKON_FE_P)
762 rx_reg |= GMF_RX_OVER_ON;
764 sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg);
766 if (hw->chip_id == CHIP_ID_YUKON_XL) {
767 /* Hardware errata - clear flush mask */
768 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0);
770 /* Flush Rx MAC FIFO on any flow control or error */
771 sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
774 /* Set threshold to 0xa (64 bytes) + 1 to workaround pause bug */
775 reg = RX_GMF_FL_THR_DEF + 1;
776 /* Another magic mystery workaround from sk98lin */
777 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
778 hw->chip_rev == CHIP_REV_YU_FE2_A0)
780 sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg);
782 /* Configure Tx MAC FIFO */
783 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
784 sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
786 /* On chips without ram buffer, pause is controlled by MAC level */
787 if (!(hw->flags & SKY2_HW_RAM_BUFFER)) {
788 sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
789 sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
791 sky2_set_tx_stfwd(hw, port);
794 if (hw->chip_id == CHIP_ID_YUKON_FE_P &&
795 hw->chip_rev == CHIP_REV_YU_FE2_A0) {
796 /* disable dynamic watermark */
797 reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA));
798 reg &= ~TX_DYN_WM_ENA;
799 sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg);
803 /* Assign Ram Buffer allocation to queue */
804 static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space)
808 /* convert from K bytes to qwords used for hw register */
811 end = start + space - 1;
813 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
814 sky2_write32(hw, RB_ADDR(q, RB_START), start);
815 sky2_write32(hw, RB_ADDR(q, RB_END), end);
816 sky2_write32(hw, RB_ADDR(q, RB_WP), start);
817 sky2_write32(hw, RB_ADDR(q, RB_RP), start);
819 if (q == Q_R1 || q == Q_R2) {
820 u32 tp = space - space/4;
822 /* On receive queue's set the thresholds
823 * give receiver priority when > 3/4 full
824 * send pause when down to 2K
826 sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp);
827 sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2);
830 sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
831 sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
833 /* Enable store & forward on Tx queue's because
834 * Tx FIFO is only 1K on Yukon
836 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
839 sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
840 sky2_read8(hw, RB_ADDR(q, RB_CTRL));
843 /* Setup Bus Memory Interface */
844 static void sky2_qset(struct sky2_hw *hw, u16 q)
846 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
847 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
848 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
849 sky2_write32(hw, Q_ADDR(q, Q_WM), BMU_WM_DEFAULT);
852 /* Setup prefetch unit registers. This is the interface between
853 * hardware and driver list elements
855 static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
858 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
859 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
860 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
861 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
862 sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
863 sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
865 sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL));
868 static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
870 struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
872 sky2->tx_prod = RING_NEXT(sky2->tx_prod, TX_RING_SIZE);
877 static void tx_init(struct sky2_port *sky2)
879 struct sky2_tx_le *le;
881 sky2->tx_prod = sky2->tx_cons = 0;
883 le = get_tx_le(sky2);
885 le->opcode = OP_ADDR64 | HW_OWNER;
888 static inline struct tx_ring_info *tx_le_re(struct sky2_port *sky2,
889 struct sky2_tx_le *le)
891 return sky2->tx_ring + (le - sky2->tx_le);
894 /* Update chip's next pointer */
895 static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
897 /* Make sure write' to descriptors are complete before we tell hardware */
899 sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
900 DBGIO(PFX "queue %#x idx <- %d\n", q, idx);
904 static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
906 struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
908 sky2->rx_put = RING_NEXT(sky2->rx_put, RX_LE_SIZE);
913 /* Build description to hardware for one receive segment */
914 static void sky2_rx_add(struct sky2_port *sky2, u8 op,
915 u32 map, unsigned len)
917 struct sky2_rx_le *le;
919 le = sky2_next_rx(sky2);
920 le->addr = cpu_to_le32(map);
921 le->length = cpu_to_le16(len);
922 le->opcode = op | HW_OWNER;
925 /* Build description to hardware for one possibly fragmented skb */
926 static void sky2_rx_submit(struct sky2_port *sky2,
927 const struct rx_ring_info *re)
929 sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size);
933 static void sky2_rx_map_iob(struct pci_device *pdev __unused,
934 struct rx_ring_info *re,
935 unsigned size __unused)
937 struct io_buffer *iob = re->iob;
938 re->data_addr = virt_to_bus(iob->data);
941 /* Diable the checksum offloading.
943 static void rx_set_checksum(struct sky2_port *sky2)
945 struct sky2_rx_le *le = sky2_next_rx(sky2);
947 le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
949 le->opcode = OP_TCPSTART | HW_OWNER;
951 sky2_write32(sky2->hw,
952 Q_ADDR(rxqaddr[sky2->port], Q_CSR),
957 * The RX Stop command will not work for Yukon-2 if the BMU does not
958 * reach the end of packet and since we can't make sure that we have
959 * incoming data, we must reset the BMU while it is not doing a DMA
960 * transfer. Since it is possible that the RX path is still active,
961 * the RX RAM buffer will be stopped first, so any possible incoming
962 * data will not trigger a DMA. After the RAM buffer is stopped, the
963 * BMU is polled until any DMA in progress is ended and only then it
966 static void sky2_rx_stop(struct sky2_port *sky2)
968 struct sky2_hw *hw = sky2->hw;
969 unsigned rxq = rxqaddr[sky2->port];
972 /* disable the RAM Buffer receive queue */
973 sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD);
975 for (i = 0; i < 0xffff; i++)
976 if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL))
977 == sky2_read8(hw, RB_ADDR(rxq, Q_RL)))
980 DBG(PFX "%s: receiver stop failed\n", sky2->netdev->name);
982 sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
984 /* reset the Rx prefetch unit */
985 sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
989 /* Clean out receive buffer area, assumes receiver hardware stopped */
990 static void sky2_rx_clean(struct sky2_port *sky2)
994 memset(sky2->rx_le, 0, RX_LE_BYTES);
995 for (i = 0; i < RX_PENDING; i++) {
996 struct rx_ring_info *re = sky2->rx_ring + i;
1006 * Allocate an iob for receiving.
1008 static struct io_buffer *sky2_rx_alloc(struct sky2_port *sky2)
1010 struct io_buffer *iob;
1012 iob = alloc_iob(sky2->rx_data_size + ETH_DATA_ALIGN);
1017 * Cards with a RAM buffer hang in the rx FIFO if the
1018 * receive buffer isn't aligned to (Linux module comments say
1019 * 64 bytes, Linux module code says 8 bytes). Since io_buffers
1020 * are always 2kb-aligned under iPXE, just leave it be
1021 * without ETH_DATA_ALIGN in those cases.
1023 * XXX This causes unaligned access to the IP header,
1024 * which is undesirable, but it's less undesirable than the
1027 if (!(sky2->hw->flags & SKY2_HW_RAM_BUFFER)) {
1028 iob_reserve(iob, ETH_DATA_ALIGN);
1034 static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq)
1036 sky2_put_idx(sky2->hw, rxq, sky2->rx_put);
1040 * Allocate and setup receiver buffer pool.
1041 * Normal case this ends up creating one list element for skb
1042 * in the receive ring. One element is used for checksum
1043 * enable/disable, and one extra to avoid wrap.
1045 static int sky2_rx_start(struct sky2_port *sky2)
1047 struct sky2_hw *hw = sky2->hw;
1048 struct rx_ring_info *re;
1049 unsigned rxq = rxqaddr[sky2->port];
1050 unsigned i, size, thresh;
1052 sky2->rx_put = sky2->rx_next = 0;
1055 /* On PCI express lowering the watermark gives better performance */
1056 if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
1057 sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX);
1059 /* These chips have no ram buffer?
1060 * MAC Rx RAM Read is controlled by hardware */
1061 if (hw->chip_id == CHIP_ID_YUKON_EC_U &&
1062 (hw->chip_rev == CHIP_REV_YU_EC_U_A1
1063 || hw->chip_rev == CHIP_REV_YU_EC_U_B0))
1064 sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS);
1066 sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
1068 if (!(hw->flags & SKY2_HW_NEW_LE))
1069 rx_set_checksum(sky2);
1071 /* Space needed for frame data + headers rounded up */
1072 size = (ETH_FRAME_LEN + 8) & ~7;
1074 /* Stopping point for hardware truncation */
1075 thresh = (size - 8) / sizeof(u32);
1077 sky2->rx_data_size = size;
1080 for (i = 0; i < RX_PENDING; i++) {
1081 re = sky2->rx_ring + i;
1083 re->iob = sky2_rx_alloc(sky2);
1087 sky2_rx_map_iob(hw->pdev, re, sky2->rx_data_size);
1088 sky2_rx_submit(sky2, re);
1092 * The receiver hangs if it receives frames larger than the
1093 * packet buffer. As a workaround, truncate oversize frames, but
1094 * the register is limited to 9 bits, so if you do frames > 2052
1095 * you better get the MTU right!
1098 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF);
1100 sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh);
1101 sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
1104 /* Tell chip about available buffers */
1105 sky2_rx_update(sky2, rxq);
1108 sky2_rx_clean(sky2);
1112 /* Free the le and ring buffers */
1113 static void sky2_free_rings(struct sky2_port *sky2)
1115 free_dma(sky2->rx_le, RX_LE_BYTES);
1116 free(sky2->rx_ring);
1118 free_dma(sky2->tx_le, TX_RING_SIZE * sizeof(struct sky2_tx_le));
1119 free(sky2->tx_ring);
1124 sky2->rx_ring = NULL;
1125 sky2->tx_ring = NULL;
1128 /* Bring up network interface. */
1129 static int sky2_up(struct net_device *dev)
1131 struct sky2_port *sky2 = netdev_priv(dev);
1132 struct sky2_hw *hw = sky2->hw;
1133 unsigned port = sky2->port;
1137 netdev_link_down(dev);
1139 /* must be power of 2 */
1140 sky2->tx_le = malloc_dma(TX_RING_SIZE * sizeof(struct sky2_tx_le), TX_RING_ALIGN);
1141 sky2->tx_le_map = virt_to_bus(sky2->tx_le);
1144 memset(sky2->tx_le, 0, TX_RING_SIZE * sizeof(struct sky2_tx_le));
1146 sky2->tx_ring = zalloc(TX_RING_SIZE * sizeof(struct tx_ring_info));
1152 sky2->rx_le = malloc_dma(RX_LE_BYTES, RX_RING_ALIGN);
1153 sky2->rx_le_map = virt_to_bus(sky2->rx_le);
1156 memset(sky2->rx_le, 0, RX_LE_BYTES);
1158 sky2->rx_ring = zalloc(RX_PENDING * sizeof(struct rx_ring_info));
1162 sky2_mac_init(hw, port);
1164 /* Register is number of 4K blocks on internal RAM buffer. */
1165 ramsize = sky2_read8(hw, B2_E_0) * 4;
1169 hw->flags |= SKY2_HW_RAM_BUFFER;
1170 DBG2(PFX "%s: ram buffer %dK\n", dev->name, ramsize);
1172 rxspace = ramsize / 2;
1174 rxspace = 8 + (2*(ramsize - 16))/3;
1176 sky2_ramset(hw, rxqaddr[port], 0, rxspace);
1177 sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
1179 /* Make sure SyncQ is disabled */
1180 sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
1184 sky2_qset(hw, txqaddr[port]);
1186 /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */
1187 if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0)
1188 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF);
1190 /* Set almost empty threshold */
1191 if (hw->chip_id == CHIP_ID_YUKON_EC_U
1192 && hw->chip_rev == CHIP_REV_YU_EC_U_A0)
1193 sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV);
1195 sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
1198 err = sky2_rx_start(sky2);
1202 /* Enable interrupts from phy/mac for port */
1203 imask = sky2_read32(hw, B0_IMSK);
1204 imask |= portirq_msk[port];
1205 sky2_write32(hw, B0_IMSK, imask);
1207 DBGIO(PFX "%s: le bases: st %p [%x], rx %p [%x], tx %p [%x]\n",
1208 dev->name, hw->st_le, hw->st_dma, sky2->rx_le, sky2->rx_le_map,
1209 sky2->tx_le, sky2->tx_le_map);
1211 sky2_set_multicast(dev);
1215 sky2_free_rings(sky2);
1219 /* Modular subtraction in ring */
1220 static inline int tx_dist(unsigned tail, unsigned head)
1222 return (head - tail) & (TX_RING_SIZE - 1);
1225 /* Number of list elements available for next tx */
1226 static inline int tx_avail(const struct sky2_port *sky2)
1228 return TX_PENDING - tx_dist(sky2->tx_cons, sky2->tx_prod);
1233 * Put one packet in ring for transmit.
1234 * A single packet can generate multiple list elements, and
1235 * the number of ring elements will probably be less than the number
1236 * of list elements used.
1238 static int sky2_xmit_frame(struct net_device *dev, struct io_buffer *iob)
1240 struct sky2_port *sky2 = netdev_priv(dev);
1241 struct sky2_hw *hw = sky2->hw;
1242 struct sky2_tx_le *le = NULL;
1243 struct tx_ring_info *re;
1248 if (tx_avail(sky2) < 1)
1252 mapping = virt_to_bus(iob->data);
1254 DBGIO(PFX "%s: tx queued, slot %d, len %d\n", dev->name,
1255 sky2->tx_prod, len);
1259 le = get_tx_le(sky2);
1260 le->addr = cpu_to_le32((u32) mapping);
1261 le->length = cpu_to_le16(len);
1263 le->opcode = (OP_PACKET | HW_OWNER);
1265 re = tx_le_re(sky2, le);
1270 sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod);
1276 * Free ring elements from starting at tx_cons until "done"
1278 * NB: the hardware will tell us about partial completion of multi-part
1279 * buffers so make sure not to free iob too early.
1281 static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
1283 struct net_device *dev = sky2->netdev;
1286 assert(done < TX_RING_SIZE);
1288 for (idx = sky2->tx_cons; idx != done;
1289 idx = RING_NEXT(idx, TX_RING_SIZE)) {
1290 struct sky2_tx_le *le = sky2->tx_le + idx;
1291 struct tx_ring_info *re = sky2->tx_ring + idx;
1293 if (le->ctrl & EOP) {
1294 DBGIO(PFX "%s: tx done %d\n", dev->name, idx);
1295 netdev_tx_complete(dev, re->iob);
1299 sky2->tx_cons = idx;
1303 /* Cleanup all untransmitted buffers, assume transmitter not running */
1304 static void sky2_tx_clean(struct net_device *dev)
1306 struct sky2_port *sky2 = netdev_priv(dev);
1308 sky2_tx_complete(sky2, sky2->tx_prod);
1311 /* Network shutdown */
1312 static void sky2_down(struct net_device *dev)
1314 struct sky2_port *sky2 = netdev_priv(dev);
1315 struct sky2_hw *hw = sky2->hw;
1316 unsigned port = sky2->port;
1320 /* Never really got started! */
1324 DBG2(PFX "%s: disabling interface\n", dev->name);
1326 /* Disable port IRQ */
1327 imask = sky2_read32(hw, B0_IMSK);
1328 imask &= ~portirq_msk[port];
1329 sky2_write32(hw, B0_IMSK, imask);
1331 sky2_gmac_reset(hw, port);
1333 /* Stop transmitter */
1334 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
1335 sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
1337 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
1338 RB_RST_SET | RB_DIS_OP_MD);
1340 ctrl = gma_read16(hw, port, GM_GP_CTRL);
1341 ctrl &= ~(GM_GPCR_TX_ENA | GM_GPCR_RX_ENA);
1342 gma_write16(hw, port, GM_GP_CTRL, ctrl);
1344 sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1346 /* Workaround shared GMAC reset */
1347 if (!(hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
1348 && port == 0 && hw->dev[1]))
1349 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1351 /* Disable Force Sync bit and Enable Alloc bit */
1352 sky2_write8(hw, SK_REG(port, TXA_CTRL),
1353 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
1355 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
1356 sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
1357 sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
1359 /* Reset the PCI FIFO of the async Tx queue */
1360 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR),
1361 BMU_RST_SET | BMU_FIFO_RST);
1363 /* Reset the Tx prefetch units */
1364 sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
1367 sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
1371 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
1372 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
1374 sky2_phy_power_down(hw, port);
1376 /* turn off LED's */
1377 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
1380 sky2_rx_clean(sky2);
1382 sky2_free_rings(sky2);
1387 static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
1389 if (hw->flags & SKY2_HW_FIBRE_PHY)
1392 if (!(hw->flags & SKY2_HW_GIGABIT)) {
1393 if (aux & PHY_M_PS_SPEED_100)
1399 switch (aux & PHY_M_PS_SPEED_MSK) {
1400 case PHY_M_PS_SPEED_1000:
1402 case PHY_M_PS_SPEED_100:
1409 static void sky2_link_up(struct sky2_port *sky2)
1411 struct sky2_hw *hw = sky2->hw;
1412 unsigned port = sky2->port;
1414 static const char *fc_name[] = {
1422 reg = gma_read16(hw, port, GM_GP_CTRL);
1423 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
1424 gma_write16(hw, port, GM_GP_CTRL, reg);
1426 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
1428 netdev_link_up(sky2->netdev);
1430 /* Turn on link LED */
1431 sky2_write8(hw, SK_REG(port, LNK_LED_REG),
1432 LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
1434 DBG(PFX "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1435 sky2->netdev->name, sky2->speed,
1436 sky2->duplex == DUPLEX_FULL ? "full" : "half",
1437 fc_name[sky2->flow_status]);
1440 static void sky2_link_down(struct sky2_port *sky2)
1442 struct sky2_hw *hw = sky2->hw;
1443 unsigned port = sky2->port;
1446 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
1448 reg = gma_read16(hw, port, GM_GP_CTRL);
1449 reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
1450 gma_write16(hw, port, GM_GP_CTRL, reg);
1452 netdev_link_down(sky2->netdev);
1454 /* Turn on link LED */
1455 sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
1457 DBG(PFX "%s: Link is down.\n", sky2->netdev->name);
1459 sky2_phy_init(hw, port);
1462 static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux)
1464 struct sky2_hw *hw = sky2->hw;
1465 unsigned port = sky2->port;
1468 advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
1469 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
1470 if (lpa & PHY_M_AN_RF) {
1471 DBG(PFX "%s: remote fault\n", sky2->netdev->name);
1475 if (!(aux & PHY_M_PS_SPDUP_RES)) {
1476 DBG(PFX "%s: speed/duplex mismatch\n", sky2->netdev->name);
1480 sky2->speed = sky2_phy_speed(hw, aux);
1481 sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1483 /* Since the pause result bits seem to in different positions on
1484 * different chips. look at registers.
1487 sky2->flow_status = FC_NONE;
1488 if (advert & ADVERTISE_PAUSE_CAP) {
1489 if (lpa & LPA_PAUSE_CAP)
1490 sky2->flow_status = FC_BOTH;
1491 else if (advert & ADVERTISE_PAUSE_ASYM)
1492 sky2->flow_status = FC_RX;
1493 } else if (advert & ADVERTISE_PAUSE_ASYM) {
1494 if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM))
1495 sky2->flow_status = FC_TX;
1498 if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000
1499 && !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX))
1500 sky2->flow_status = FC_NONE;
1502 if (sky2->flow_status & FC_TX)
1503 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
1505 sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1510 /* Interrupt from PHY */
1511 static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
1513 struct net_device *dev = hw->dev[port];
1514 struct sky2_port *sky2 = netdev_priv(dev);
1515 u16 istatus, phystat;
1517 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
1518 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
1520 DBGIO(PFX "%s: phy interrupt status 0x%x 0x%x\n",
1521 sky2->netdev->name, istatus, phystat);
1523 if (sky2->autoneg == AUTONEG_ENABLE && (istatus & PHY_M_IS_AN_COMPL)) {
1524 if (sky2_autoneg_done(sky2, phystat) == 0)
1529 if (istatus & PHY_M_IS_LSP_CHANGE)
1530 sky2->speed = sky2_phy_speed(hw, phystat);
1532 if (istatus & PHY_M_IS_DUP_CHANGE)
1534 (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
1536 if (istatus & PHY_M_IS_LST_CHANGE) {
1537 if (phystat & PHY_M_PS_LINK_UP)
1540 sky2_link_down(sky2);
1544 /* Normal packet - take iob from ring element and put in a new one */
1545 static struct io_buffer *receive_new(struct sky2_port *sky2,
1546 struct rx_ring_info *re,
1547 unsigned int length)
1549 struct io_buffer *iob, *niob;
1550 unsigned hdr_space = sky2->rx_data_size;
1552 /* Don't be tricky about reusing pages (yet) */
1553 niob = sky2_rx_alloc(sky2);
1560 sky2_rx_map_iob(sky2->hw->pdev, re, hdr_space);
1562 iob_put(iob, length);
1567 * Receive one packet.
1568 * For larger packets, get new buffer.
1570 static struct io_buffer *sky2_receive(struct net_device *dev,
1571 u16 length, u32 status)
1573 struct sky2_port *sky2 = netdev_priv(dev);
1574 struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
1575 struct io_buffer *iob = NULL;
1576 u16 count = (status & GMR_FS_LEN) >> 16;
1578 DBGIO(PFX "%s: rx slot %d status 0x%x len %d\n",
1579 dev->name, sky2->rx_next, status, length);
1581 sky2->rx_next = (sky2->rx_next + 1) % RX_PENDING;
1583 /* This chip has hardware problems that generates bogus status.
1584 * So do only marginal checking and expect higher level protocols
1585 * to handle crap frames.
1587 if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P &&
1588 sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 &&
1592 if (status & GMR_FS_ANY_ERR)
1595 if (!(status & GMR_FS_RX_OK))
1598 /* if length reported by DMA does not match PHY, packet was truncated */
1599 if (length != count)
1603 iob = receive_new(sky2, re, length);
1605 sky2_rx_submit(sky2, re);
1610 /* Truncation of overlength packets
1611 causes PHY length to not match MAC length */
1612 DBG2(PFX "%s: rx length error: status %#x length %d\n",
1613 dev->name, status, length);
1615 /* Pass NULL as iob because we want to keep our iob in the
1616 ring for the next packet. */
1617 netdev_rx_err(dev, NULL, -EINVAL);
1621 if (status & GMR_FS_RX_FF_OV) {
1622 DBG2(PFX "%s: FIFO overflow error\n", dev->name);
1623 netdev_rx_err(dev, NULL, -EBUSY);
1627 DBG2(PFX "%s: rx error, status 0x%x length %d\n",
1628 dev->name, status, length);
1629 netdev_rx_err(dev, NULL, -EIO);
1634 /* Transmit complete */
1635 static inline void sky2_tx_done(struct net_device *dev, u16 last)
1637 struct sky2_port *sky2 = netdev_priv(dev);
1639 sky2_tx_complete(sky2, last);
1642 /* Process status response ring */
1643 static void sky2_status_intr(struct sky2_hw *hw, u16 idx)
1645 unsigned rx[2] = { 0, 0 };
1649 struct sky2_status_le *le = hw->st_le + hw->st_idx;
1651 struct net_device *dev;
1652 struct io_buffer *iob;
1655 u8 opcode = le->opcode;
1657 if (!(opcode & HW_OWNER))
1660 port = le->css & CSS_LINK_BIT;
1661 dev = hw->dev[port];
1662 length = le16_to_cpu(le->length);
1663 status = le32_to_cpu(le->status);
1665 hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE);
1668 switch (opcode & ~HW_OWNER) {
1671 iob = sky2_receive(dev, length, status);
1673 netdev_rx_err(dev, NULL, -ENOMEM);
1677 netdev_rx(dev, iob);
1681 DBG2(PFX "status OP_RXCHKS but checksum offloading disabled\n");
1685 /* TX index reports status for both ports */
1686 assert(TX_RING_SIZE <= 0x1000);
1687 sky2_tx_done(hw->dev[0], status & 0xfff);
1689 sky2_tx_done(hw->dev[1],
1690 ((status >> 24) & 0xff)
1691 | (u16)(length & 0xf) << 8);
1695 DBG(PFX "unknown status opcode 0x%x\n", opcode);
1697 } while (hw->st_idx != idx);
1699 /* Fully processed status ring so clear irq */
1700 sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
1703 sky2_rx_update(netdev_priv(hw->dev[0]), Q_R1);
1706 sky2_rx_update(netdev_priv(hw->dev[1]), Q_R2);
1709 static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
1711 struct net_device *dev = hw->dev[port];
1713 DBGIO(PFX "%s: hw error interrupt status 0x%x\n", dev->name, status);
1715 if (status & Y2_IS_PAR_RD1) {
1716 DBG(PFX "%s: ram data read parity error\n", dev->name);
1718 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
1721 if (status & Y2_IS_PAR_WR1) {
1722 DBG(PFX "%s: ram data write parity error\n", dev->name);
1723 sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
1726 if (status & Y2_IS_PAR_MAC1) {
1727 DBG(PFX "%s: MAC parity error\n", dev->name);
1728 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
1731 if (status & Y2_IS_PAR_RX1) {
1732 DBG(PFX "%s: RX parity error\n", dev->name);
1733 sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
1736 if (status & Y2_IS_TCP_TXA1) {
1737 DBG(PFX "%s: TCP segmentation error\n", dev->name);
1738 sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
1742 static void sky2_hw_intr(struct sky2_hw *hw)
1744 u32 status = sky2_read32(hw, B0_HWE_ISRC);
1745 u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
1749 if (status & Y2_IS_TIST_OV)
1750 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
1752 if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
1755 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
1756 pci_err = sky2_pci_read16(hw, PCI_STATUS);
1757 DBG(PFX "PCI hardware error (0x%x)\n", pci_err);
1759 sky2_pci_write16(hw, PCI_STATUS,
1760 pci_err | PCI_STATUS_ERROR_BITS);
1761 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
1764 if (status & Y2_IS_PCI_EXP) {
1765 /* PCI-Express uncorrectable Error occurred */
1768 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
1769 err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
1770 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
1772 DBG(PFX "PCI-Express error (0x%x)\n", err);
1774 sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS);
1775 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
1778 if (status & Y2_HWE_L1_MASK)
1779 sky2_hw_error(hw, 0, status);
1781 if (status & Y2_HWE_L1_MASK)
1782 sky2_hw_error(hw, 1, status);
1785 static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
1787 struct net_device *dev = hw->dev[port];
1788 u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
1790 DBGIO(PFX "%s: mac interrupt status 0x%x\n", dev->name, status);
1792 if (status & GM_IS_RX_CO_OV)
1793 gma_read16(hw, port, GM_RX_IRQ_SRC);
1795 if (status & GM_IS_TX_CO_OV)
1796 gma_read16(hw, port, GM_TX_IRQ_SRC);
1798 if (status & GM_IS_RX_FF_OR) {
1799 sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
1802 if (status & GM_IS_TX_FF_UR) {
1803 sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
1807 /* This should never happen it is a bug. */
1808 static void sky2_le_error(struct sky2_hw *hw, unsigned port,
1809 u16 q, unsigned ring_size __unused)
1811 struct net_device *dev = hw->dev[port];
1812 struct sky2_port *sky2 = netdev_priv(dev);
1814 const u64 *le = (q == Q_R1 || q == Q_R2)
1815 ? (u64 *) sky2->rx_le : (u64 *) sky2->tx_le;
1817 idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
1818 DBG(PFX "%s: descriptor error q=%#x get=%d [%llx] last=%d put=%d should be %d\n",
1819 dev->name, (unsigned) q, idx, (unsigned long long) le[idx],
1820 (int) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_LAST_IDX)),
1821 (int) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)),
1822 le == (u64 *)sky2->rx_le? sky2->rx_put : sky2->tx_prod);
1824 sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK);
1827 /* Hardware/software error handling */
1828 static void sky2_err_intr(struct sky2_hw *hw, u32 status)
1830 DBG(PFX "error interrupt status=%#x\n", status);
1832 if (status & Y2_IS_HW_ERR)
1835 if (status & Y2_IS_IRQ_MAC1)
1836 sky2_mac_intr(hw, 0);
1838 if (status & Y2_IS_IRQ_MAC2)
1839 sky2_mac_intr(hw, 1);
1841 if (status & Y2_IS_CHK_RX1)
1842 sky2_le_error(hw, 0, Q_R1, RX_LE_SIZE);
1844 if (status & Y2_IS_CHK_RX2)
1845 sky2_le_error(hw, 1, Q_R2, RX_LE_SIZE);
1847 if (status & Y2_IS_CHK_TXA1)
1848 sky2_le_error(hw, 0, Q_XA1, TX_RING_SIZE);
1850 if (status & Y2_IS_CHK_TXA2)
1851 sky2_le_error(hw, 1, Q_XA2, TX_RING_SIZE);
1854 static void sky2_poll(struct net_device *dev)
1856 struct sky2_port *sky2 = netdev_priv(dev);
1857 struct sky2_hw *hw = sky2->hw;
1858 u32 status = sky2_read32(hw, B0_Y2_SP_EISR);
1861 if (status & Y2_IS_ERROR)
1862 sky2_err_intr(hw, status);
1864 if (status & Y2_IS_IRQ_PHY1)
1865 sky2_phy_intr(hw, 0);
1867 if (status & Y2_IS_IRQ_PHY2)
1868 sky2_phy_intr(hw, 1);
1870 while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) {
1871 sky2_status_intr(hw, idx);
1874 /* Bug/Errata workaround?
1875 * Need to kick the TX irq moderation timer.
1877 if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_START) {
1878 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
1879 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
1881 sky2_read32(hw, B0_Y2_SP_LISR);
1884 /* Chip internal frequency for clock calculations */
1885 static u32 sky2_mhz(const struct sky2_hw *hw)
1887 switch (hw->chip_id) {
1888 case CHIP_ID_YUKON_EC:
1889 case CHIP_ID_YUKON_EC_U:
1890 case CHIP_ID_YUKON_EX:
1891 case CHIP_ID_YUKON_SUPR:
1892 case CHIP_ID_YUKON_UL_2:
1895 case CHIP_ID_YUKON_FE:
1898 case CHIP_ID_YUKON_FE_P:
1901 case CHIP_ID_YUKON_XL:
1905 DBG(PFX "unknown chip ID!\n");
1906 return 100; /* bogus */
1910 static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
1912 return sky2_mhz(hw) * us;
1915 static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
1917 return clk / sky2_mhz(hw);
1920 static int sky2_init(struct sky2_hw *hw)
1924 /* Enable all clocks and check for bad PCI access */
1925 sky2_pci_write32(hw, PCI_DEV_REG3, 0);
1927 sky2_write8(hw, B0_CTST, CS_RST_CLR);
1929 hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
1930 hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
1932 switch(hw->chip_id) {
1933 case CHIP_ID_YUKON_XL:
1934 hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY;
1937 case CHIP_ID_YUKON_EC_U:
1938 hw->flags = SKY2_HW_GIGABIT
1940 | SKY2_HW_ADV_POWER_CTL;
1943 case CHIP_ID_YUKON_EX:
1944 hw->flags = SKY2_HW_GIGABIT
1947 | SKY2_HW_ADV_POWER_CTL;
1950 case CHIP_ID_YUKON_EC:
1951 /* This rev is really old, and requires untested workarounds */
1952 if (hw->chip_rev == CHIP_REV_YU_EC_A1) {
1953 DBG(PFX "unsupported revision Yukon-EC rev A1\n");
1956 hw->flags = SKY2_HW_GIGABIT;
1959 case CHIP_ID_YUKON_FE:
1962 case CHIP_ID_YUKON_FE_P:
1963 hw->flags = SKY2_HW_NEWER_PHY
1965 | SKY2_HW_AUTO_TX_SUM
1966 | SKY2_HW_ADV_POWER_CTL;
1969 case CHIP_ID_YUKON_SUPR:
1970 hw->flags = SKY2_HW_GIGABIT
1973 | SKY2_HW_AUTO_TX_SUM
1974 | SKY2_HW_ADV_POWER_CTL;
1977 case CHIP_ID_YUKON_UL_2:
1978 hw->flags = SKY2_HW_GIGABIT
1979 | SKY2_HW_ADV_POWER_CTL;
1983 DBG(PFX "unsupported chip type 0x%x\n", hw->chip_id);
1987 hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
1988 if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P')
1989 hw->flags |= SKY2_HW_FIBRE_PHY;
1992 t8 = sky2_read8(hw, B2_Y2_HW_RES);
1993 if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
1994 if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
2001 static void sky2_reset(struct sky2_hw *hw)
2005 u32 hwe_mask = Y2_HWE_ALL_MASK;
2008 if (hw->chip_id == CHIP_ID_YUKON_EX) {
2009 status = sky2_read16(hw, HCU_CCSR);
2010 status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
2011 HCU_CCSR_UC_STATE_MSK);
2012 sky2_write16(hw, HCU_CCSR, status);
2014 sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
2015 sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
2018 sky2_write8(hw, B0_CTST, CS_RST_SET);
2019 sky2_write8(hw, B0_CTST, CS_RST_CLR);
2021 /* allow writes to PCI config */
2022 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
2024 /* clear PCI errors, if any */
2025 status = sky2_pci_read16(hw, PCI_STATUS);
2026 status |= PCI_STATUS_ERROR_BITS;
2027 sky2_pci_write16(hw, PCI_STATUS, status);
2029 sky2_write8(hw, B0_CTST, CS_MRST_CLR);
2031 cap = pci_find_capability(hw->pdev, PCI_CAP_ID_EXP);
2033 sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS,
2036 /* If an error bit is stuck on ignore it */
2037 if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP)
2038 DBG(PFX "ignoring stuck error report bit\n");
2040 hwe_mask |= Y2_IS_PCI_EXP;
2044 sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
2046 for (i = 0; i < hw->ports; i++) {
2047 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
2048 sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
2050 if (hw->chip_id == CHIP_ID_YUKON_EX ||
2051 hw->chip_id == CHIP_ID_YUKON_SUPR)
2052 sky2_write16(hw, SK_REG(i, GMAC_CTRL),
2053 GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
2057 /* Clear I2C IRQ noise */
2058 sky2_write32(hw, B2_I2C_IRQ, 1);
2060 /* turn off hardware timer (unused) */
2061 sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
2062 sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
2064 sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
2066 /* Turn off descriptor polling */
2067 sky2_write32(hw, B28_DPT_CTRL, DPT_STOP);
2069 /* Turn off receive timestamp */
2070 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
2071 sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
2073 /* enable the Tx Arbiters */
2074 for (i = 0; i < hw->ports; i++)
2075 sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
2077 /* Initialize ram interface */
2078 for (i = 0; i < hw->ports; i++) {
2079 sky2_write8(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
2081 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
2082 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
2083 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
2084 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
2085 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
2086 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
2087 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
2088 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
2089 sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
2090 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
2091 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
2092 sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
2095 sky2_write32(hw, B0_HWE_IMSK, hwe_mask);
2097 for (i = 0; i < hw->ports; i++)
2098 sky2_gmac_reset(hw, i);
2100 memset(hw->st_le, 0, STATUS_LE_BYTES);
2103 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
2104 sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
2106 sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
2107 sky2_write32(hw, STAT_LIST_ADDR_HI, (u64) hw->st_dma >> 32);
2109 /* Set the list last index */
2110 sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE - 1);
2112 sky2_write16(hw, STAT_TX_IDX_TH, 10);
2113 sky2_write8(hw, STAT_FIFO_WM, 16);
2115 /* set Status-FIFO ISR watermark */
2116 if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
2117 sky2_write8(hw, STAT_FIFO_ISR_WM, 4);
2119 sky2_write8(hw, STAT_FIFO_ISR_WM, 16);
2121 sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000));
2122 sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20));
2123 sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100));
2125 /* enable status unit */
2126 sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
2128 sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
2129 sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
2130 sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
2133 static u32 sky2_supported_modes(const struct sky2_hw *hw)
2135 if (sky2_is_copper(hw)) {
2136 u32 modes = SUPPORTED_10baseT_Half
2137 | SUPPORTED_10baseT_Full
2138 | SUPPORTED_100baseT_Half
2139 | SUPPORTED_100baseT_Full
2140 | SUPPORTED_Autoneg | SUPPORTED_TP;
2142 if (hw->flags & SKY2_HW_GIGABIT)
2143 modes |= SUPPORTED_1000baseT_Half
2144 | SUPPORTED_1000baseT_Full;
2147 return SUPPORTED_1000baseT_Half
2148 | SUPPORTED_1000baseT_Full
2153 static void sky2_set_multicast(struct net_device *dev)
2155 struct sky2_port *sky2 = netdev_priv(dev);
2156 struct sky2_hw *hw = sky2->hw;
2157 unsigned port = sky2->port;
2161 reg = gma_read16(hw, port, GM_RX_CTRL);
2162 reg |= GM_RXCR_UCF_ENA;
2164 memset(filter, 0xff, sizeof(filter));
2166 gma_write16(hw, port, GM_MC_ADDR_H1,
2167 (u16) filter[0] | ((u16) filter[1] << 8));
2168 gma_write16(hw, port, GM_MC_ADDR_H2,
2169 (u16) filter[2] | ((u16) filter[3] << 8));
2170 gma_write16(hw, port, GM_MC_ADDR_H3,
2171 (u16) filter[4] | ((u16) filter[5] << 8));
2172 gma_write16(hw, port, GM_MC_ADDR_H4,
2173 (u16) filter[6] | ((u16) filter[7] << 8));
2175 gma_write16(hw, port, GM_RX_CTRL, reg);
2178 /* Initialize network device */
2179 static struct net_device *sky2_init_netdev(struct sky2_hw *hw,
2182 struct sky2_port *sky2;
2183 struct net_device *dev = alloc_etherdev(sizeof(*sky2));
2186 DBG(PFX "etherdev alloc failed\n");
2190 dev->dev = &hw->pdev->dev;
2192 sky2 = netdev_priv(dev);
2196 /* Auto speed and flow control */
2197 sky2->autoneg = AUTONEG_ENABLE;
2198 sky2->flow_mode = FC_BOTH;
2202 sky2->advertising = sky2_supported_modes(hw);
2204 hw->dev[port] = dev;
2208 /* read the mac address */
2209 memcpy(dev->hw_addr, (void *)(hw->regs + B2_MAC_1 + port * 8), ETH_ALEN);
2214 static void sky2_show_addr(struct net_device *dev)
2216 DBG2(PFX "%s: addr %s\n", dev->name, netdev_addr(dev));
2220 /* This driver supports yukon2 chipset only */
2221 static const char *sky2_name(u8 chipid, char *buf, int sz)
2223 const char *name[] = {
2225 "EC Ultra", /* 0xb4 */
2226 "Extreme", /* 0xb5 */
2230 "Supreme", /* 0xb9 */
2234 if (chipid >= CHIP_ID_YUKON_XL && chipid <= CHIP_ID_YUKON_UL_2)
2235 strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
2237 snprintf(buf, sz, "(chip %#x)", chipid);
2242 static void sky2_net_irq(struct net_device *dev, int enable)
2244 struct sky2_port *sky2 = netdev_priv(dev);
2245 struct sky2_hw *hw = sky2->hw;
2247 u32 imask = sky2_read32(hw, B0_IMSK);
2249 imask |= portirq_msk[sky2->port];
2251 imask &= ~portirq_msk[sky2->port];
2252 sky2_write32(hw, B0_IMSK, imask);
2255 static struct net_device_operations sky2_operations = {
2258 .transmit = sky2_xmit_frame,
2263 static int sky2_probe(struct pci_device *pdev)
2265 struct net_device *dev;
2268 char buf1[16] __unused; /* only for debugging */
2270 adjust_pci_device(pdev);
2273 hw = zalloc(sizeof(*hw));
2275 DBG(PFX "cannot allocate hardware struct\n");
2281 hw->regs = (unsigned long)ioremap(pci_bar_start(pdev, PCI_BASE_ADDRESS_0), 0x4000);
2283 DBG(PFX "cannot map device registers\n");
2284 goto err_out_free_hw;
2287 /* ring for status responses */
2288 hw->st_le = malloc_dma(STATUS_LE_BYTES, STATUS_RING_ALIGN);
2290 goto err_out_iounmap;
2291 hw->st_dma = virt_to_bus(hw->st_le);
2292 memset(hw->st_le, 0, STATUS_LE_BYTES);
2294 err = sky2_init(hw);
2296 goto err_out_iounmap;
2299 DBG2(PFX "Yukon-2 %s chip revision %d\n",
2300 sky2_name(hw->chip_id, buf1, sizeof(buf1)), hw->chip_rev);
2305 dev = sky2_init_netdev(hw, 0);
2308 goto err_out_free_pci;
2311 netdev_init(dev, &sky2_operations);
2313 err = register_netdev(dev);
2315 DBG(PFX "cannot register net device\n");
2316 goto err_out_free_netdev;
2319 sky2_write32(hw, B0_IMSK, Y2_IS_BASE);
2321 sky2_show_addr(dev);
2323 if (hw->ports > 1) {
2324 struct net_device *dev1;
2326 dev1 = sky2_init_netdev(hw, 1);
2328 DBG(PFX "allocation for second device failed\n");
2329 else if ((err = register_netdev(dev1))) {
2330 DBG(PFX "register of second port failed (%d)\n", err);
2332 netdev_nullify(dev1);
2335 sky2_show_addr(dev1);
2338 pci_set_drvdata(pdev, hw);
2342 err_out_free_netdev:
2343 netdev_nullify(dev);
2346 sky2_write8(hw, B0_CTST, CS_RST_SET);
2347 free_dma(hw->st_le, STATUS_LE_BYTES);
2349 iounmap((void *)hw->regs);
2353 pci_set_drvdata(pdev, NULL);
2357 static void sky2_remove(struct pci_device *pdev)
2359 struct sky2_hw *hw = pci_get_drvdata(pdev);
2365 for (i = hw->ports-1; i >= 0; --i)
2366 unregister_netdev(hw->dev[i]);
2368 sky2_write32(hw, B0_IMSK, 0);
2372 sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
2373 sky2_write8(hw, B0_CTST, CS_RST_SET);
2374 sky2_read8(hw, B0_CTST);
2376 free_dma(hw->st_le, STATUS_LE_BYTES);
2378 for (i = hw->ports-1; i >= 0; --i) {
2379 netdev_nullify(hw->dev[i]);
2380 netdev_put(hw->dev[i]);
2383 iounmap((void *)hw->regs);
2386 pci_set_drvdata(pdev, NULL);
2389 struct pci_driver sky2_driver __pci_driver = {
2390 .ids = sky2_id_table,
2391 .id_count = (sizeof (sky2_id_table) / sizeof (sky2_id_table[0])),
2392 .probe = sky2_probe,
2393 .remove = sky2_remove