1 /***************************************************************************
3 * Copyright (C) 2004-2008 SMSC
4 * Copyright (C) 2005-2008 ARM
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 ***************************************************************************
21 * Rewritten, heavily based on smsc911x simple driver by SMSC.
22 * Partly uses io macros from smc91x.c by Nicolas Pitre
25 * LAN9115, LAN9116, LAN9117, LAN9118
26 * LAN9215, LAN9216, LAN9217, LAN9218
33 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
35 #include <linux/crc32.h>
36 #include <linux/clk.h>
37 #include <linux/delay.h>
38 #include <linux/errno.h>
39 #include <linux/etherdevice.h>
40 #include <linux/ethtool.h>
41 #include <linux/init.h>
42 #include <linux/interrupt.h>
43 #include <linux/ioport.h>
44 #include <linux/kernel.h>
45 #include <linux/module.h>
46 #include <linux/netdevice.h>
47 #include <linux/platform_device.h>
48 #include <linux/regulator/consumer.h>
49 #include <linux/sched.h>
50 #include <linux/timer.h>
51 #include <linux/bug.h>
52 #include <linux/bitops.h>
53 #include <linux/irq.h>
55 #include <linux/swab.h>
56 #include <linux/phy.h>
57 #include <linux/smsc911x.h>
58 #include <linux/device.h>
60 #include <linux/of_device.h>
61 #include <linux/of_gpio.h>
62 #include <linux/of_net.h>
65 #define SMSC_CHIPNAME "smsc911x"
66 #define SMSC_MDIONAME "smsc911x-mdio"
67 #define SMSC_DRV_VERSION "2008-10-21"
69 MODULE_LICENSE("GPL");
70 MODULE_VERSION(SMSC_DRV_VERSION
);
71 MODULE_ALIAS("platform:smsc911x");
74 static int debug
= 16;
79 module_param(debug
, int, 0);
80 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
85 u32 (*reg_read
)(struct smsc911x_data
*pdata
, u32 reg
);
86 void (*reg_write
)(struct smsc911x_data
*pdata
, u32 reg
, u32 val
);
87 void (*rx_readfifo
)(struct smsc911x_data
*pdata
,
88 unsigned int *buf
, unsigned int wordcount
);
89 void (*tx_writefifo
)(struct smsc911x_data
*pdata
,
90 unsigned int *buf
, unsigned int wordcount
);
93 #define SMSC911X_NUM_SUPPLIES 2
95 struct smsc911x_data
{
100 /* used to decide which workarounds apply */
101 unsigned int generation
;
103 /* device configuration (copied from platform_data during probe) */
104 struct smsc911x_platform_config config
;
106 /* This needs to be acquired before calling any of below:
107 * smsc911x_mac_read(), smsc911x_mac_write()
111 /* spinlock to ensure register accesses are serialised */
114 struct phy_device
*phy_dev
;
115 struct mii_bus
*mii_bus
;
116 int phy_irq
[PHY_MAX_ADDR
];
117 unsigned int using_extphy
;
122 unsigned int gpio_setting
;
123 unsigned int gpio_orig_setting
;
124 struct net_device
*dev
;
125 struct napi_struct napi
;
127 unsigned int software_irq_signal
;
129 #ifdef USE_PHY_WORK_AROUND
130 #define MIN_PACKET_SIZE (64)
131 char loopback_tx_pkt
[MIN_PACKET_SIZE
];
132 char loopback_rx_pkt
[MIN_PACKET_SIZE
];
133 unsigned int resetcount
;
136 /* Members for Multicast filter workaround */
137 unsigned int multicast_update_pending
;
138 unsigned int set_bits_mask
;
139 unsigned int clear_bits_mask
;
143 /* register access functions */
144 const struct smsc911x_ops
*ops
;
147 struct regulator_bulk_data supplies
[SMSC911X_NUM_SUPPLIES
];
153 /* Easy access to information */
154 #define __smsc_shift(pdata, reg) ((reg) << ((pdata)->config.shift))
156 static inline u32
__smsc911x_reg_read(struct smsc911x_data
*pdata
, u32 reg
)
158 if (pdata
->config
.flags
& SMSC911X_USE_32BIT
)
159 return readl(pdata
->ioaddr
+ reg
);
161 if (pdata
->config
.flags
& SMSC911X_USE_16BIT
)
162 return ((readw(pdata
->ioaddr
+ reg
) & 0xFFFF) |
163 ((readw(pdata
->ioaddr
+ reg
+ 2) & 0xFFFF) << 16));
170 __smsc911x_reg_read_shift(struct smsc911x_data
*pdata
, u32 reg
)
172 if (pdata
->config
.flags
& SMSC911X_USE_32BIT
)
173 return readl(pdata
->ioaddr
+ __smsc_shift(pdata
, reg
));
175 if (pdata
->config
.flags
& SMSC911X_USE_16BIT
)
176 return (readw(pdata
->ioaddr
+
177 __smsc_shift(pdata
, reg
)) & 0xFFFF) |
178 ((readw(pdata
->ioaddr
+
179 __smsc_shift(pdata
, reg
+ 2)) & 0xFFFF) << 16);
185 static inline u32
smsc911x_reg_read(struct smsc911x_data
*pdata
, u32 reg
)
190 spin_lock_irqsave(&pdata
->dev_lock
, flags
);
191 data
= pdata
->ops
->reg_read(pdata
, reg
);
192 spin_unlock_irqrestore(&pdata
->dev_lock
, flags
);
197 static inline void __smsc911x_reg_write(struct smsc911x_data
*pdata
, u32 reg
,
200 if (pdata
->config
.flags
& SMSC911X_USE_32BIT
) {
201 writel(val
, pdata
->ioaddr
+ reg
);
205 if (pdata
->config
.flags
& SMSC911X_USE_16BIT
) {
206 writew(val
& 0xFFFF, pdata
->ioaddr
+ reg
);
207 writew((val
>> 16) & 0xFFFF, pdata
->ioaddr
+ reg
+ 2);
215 __smsc911x_reg_write_shift(struct smsc911x_data
*pdata
, u32 reg
, u32 val
)
217 if (pdata
->config
.flags
& SMSC911X_USE_32BIT
) {
218 writel(val
, pdata
->ioaddr
+ __smsc_shift(pdata
, reg
));
222 if (pdata
->config
.flags
& SMSC911X_USE_16BIT
) {
224 pdata
->ioaddr
+ __smsc_shift(pdata
, reg
));
225 writew((val
>> 16) & 0xFFFF,
226 pdata
->ioaddr
+ __smsc_shift(pdata
, reg
+ 2));
233 static inline void smsc911x_reg_write(struct smsc911x_data
*pdata
, u32 reg
,
238 spin_lock_irqsave(&pdata
->dev_lock
, flags
);
239 pdata
->ops
->reg_write(pdata
, reg
, val
);
240 spin_unlock_irqrestore(&pdata
->dev_lock
, flags
);
243 /* Writes a packet to the TX_DATA_FIFO */
245 smsc911x_tx_writefifo(struct smsc911x_data
*pdata
, unsigned int *buf
,
246 unsigned int wordcount
)
250 spin_lock_irqsave(&pdata
->dev_lock
, flags
);
252 if (pdata
->config
.flags
& SMSC911X_SWAP_FIFO
) {
254 __smsc911x_reg_write(pdata
, TX_DATA_FIFO
,
259 if (pdata
->config
.flags
& SMSC911X_USE_32BIT
) {
260 iowrite32_rep(pdata
->ioaddr
+ TX_DATA_FIFO
, buf
, wordcount
);
264 if (pdata
->config
.flags
& SMSC911X_USE_16BIT
) {
266 __smsc911x_reg_write(pdata
, TX_DATA_FIFO
, *buf
++);
272 spin_unlock_irqrestore(&pdata
->dev_lock
, flags
);
275 /* Writes a packet to the TX_DATA_FIFO - shifted version */
277 smsc911x_tx_writefifo_shift(struct smsc911x_data
*pdata
, unsigned int *buf
,
278 unsigned int wordcount
)
282 spin_lock_irqsave(&pdata
->dev_lock
, flags
);
284 if (pdata
->config
.flags
& SMSC911X_SWAP_FIFO
) {
286 __smsc911x_reg_write_shift(pdata
, TX_DATA_FIFO
,
291 if (pdata
->config
.flags
& SMSC911X_USE_32BIT
) {
292 iowrite32_rep(pdata
->ioaddr
+ __smsc_shift(pdata
,
293 TX_DATA_FIFO
), buf
, wordcount
);
297 if (pdata
->config
.flags
& SMSC911X_USE_16BIT
) {
299 __smsc911x_reg_write_shift(pdata
,
300 TX_DATA_FIFO
, *buf
++);
306 spin_unlock_irqrestore(&pdata
->dev_lock
, flags
);
309 /* Reads a packet out of the RX_DATA_FIFO */
311 smsc911x_rx_readfifo(struct smsc911x_data
*pdata
, unsigned int *buf
,
312 unsigned int wordcount
)
316 spin_lock_irqsave(&pdata
->dev_lock
, flags
);
318 if (pdata
->config
.flags
& SMSC911X_SWAP_FIFO
) {
320 *buf
++ = swab32(__smsc911x_reg_read(pdata
,
325 if (pdata
->config
.flags
& SMSC911X_USE_32BIT
) {
326 ioread32_rep(pdata
->ioaddr
+ RX_DATA_FIFO
, buf
, wordcount
);
330 if (pdata
->config
.flags
& SMSC911X_USE_16BIT
) {
332 *buf
++ = __smsc911x_reg_read(pdata
, RX_DATA_FIFO
);
338 spin_unlock_irqrestore(&pdata
->dev_lock
, flags
);
341 /* Reads a packet out of the RX_DATA_FIFO - shifted version */
343 smsc911x_rx_readfifo_shift(struct smsc911x_data
*pdata
, unsigned int *buf
,
344 unsigned int wordcount
)
348 spin_lock_irqsave(&pdata
->dev_lock
, flags
);
350 if (pdata
->config
.flags
& SMSC911X_SWAP_FIFO
) {
352 *buf
++ = swab32(__smsc911x_reg_read_shift(pdata
,
357 if (pdata
->config
.flags
& SMSC911X_USE_32BIT
) {
358 ioread32_rep(pdata
->ioaddr
+ __smsc_shift(pdata
,
359 RX_DATA_FIFO
), buf
, wordcount
);
363 if (pdata
->config
.flags
& SMSC911X_USE_16BIT
) {
365 *buf
++ = __smsc911x_reg_read_shift(pdata
,
372 spin_unlock_irqrestore(&pdata
->dev_lock
, flags
);
376 * enable regulator and clock resources.
378 static int smsc911x_enable_resources(struct platform_device
*pdev
)
380 struct net_device
*ndev
= platform_get_drvdata(pdev
);
381 struct smsc911x_data
*pdata
= netdev_priv(ndev
);
384 ret
= regulator_bulk_enable(ARRAY_SIZE(pdata
->supplies
),
387 netdev_err(ndev
, "failed to enable regulators %d\n",
390 if (!IS_ERR(pdata
->clk
)) {
391 ret
= clk_prepare_enable(pdata
->clk
);
393 netdev_err(ndev
, "failed to enable clock %d\n", ret
);
400 * disable resources, currently just regulators.
402 static int smsc911x_disable_resources(struct platform_device
*pdev
)
404 struct net_device
*ndev
= platform_get_drvdata(pdev
);
405 struct smsc911x_data
*pdata
= netdev_priv(ndev
);
408 ret
= regulator_bulk_disable(ARRAY_SIZE(pdata
->supplies
),
411 if (!IS_ERR(pdata
->clk
))
412 clk_disable_unprepare(pdata
->clk
);
418 * Request resources, currently just regulators.
420 * The SMSC911x has two power pins: vddvario and vdd33a, in designs where
421 * these are not always-on we need to request regulators to be turned on
422 * before we can try to access the device registers.
424 static int smsc911x_request_resources(struct platform_device
*pdev
)
426 struct net_device
*ndev
= platform_get_drvdata(pdev
);
427 struct smsc911x_data
*pdata
= netdev_priv(ndev
);
430 /* Request regulators */
431 pdata
->supplies
[0].supply
= "vdd33a";
432 pdata
->supplies
[1].supply
= "vddvario";
433 ret
= regulator_bulk_get(&pdev
->dev
,
434 ARRAY_SIZE(pdata
->supplies
),
437 netdev_err(ndev
, "couldn't get regulators %d\n",
441 pdata
->clk
= clk_get(&pdev
->dev
, NULL
);
442 if (IS_ERR(pdata
->clk
))
443 netdev_warn(ndev
, "couldn't get clock %li\n", PTR_ERR(pdata
->clk
));
449 * Free resources, currently just regulators.
452 static void smsc911x_free_resources(struct platform_device
*pdev
)
454 struct net_device
*ndev
= platform_get_drvdata(pdev
);
455 struct smsc911x_data
*pdata
= netdev_priv(ndev
);
457 /* Free regulators */
458 regulator_bulk_free(ARRAY_SIZE(pdata
->supplies
),
462 if (!IS_ERR(pdata
->clk
)) {
468 /* waits for MAC not busy, with timeout. Only called by smsc911x_mac_read
469 * and smsc911x_mac_write, so assumes mac_lock is held */
470 static int smsc911x_mac_complete(struct smsc911x_data
*pdata
)
475 SMSC_ASSERT_MAC_LOCK(pdata
);
477 for (i
= 0; i
< 40; i
++) {
478 val
= smsc911x_reg_read(pdata
, MAC_CSR_CMD
);
479 if (!(val
& MAC_CSR_CMD_CSR_BUSY_
))
482 SMSC_WARN(pdata
, hw
, "Timed out waiting for MAC not BUSY. "
483 "MAC_CSR_CMD: 0x%08X", val
);
487 /* Fetches a MAC register value. Assumes mac_lock is acquired */
488 static u32
smsc911x_mac_read(struct smsc911x_data
*pdata
, unsigned int offset
)
492 SMSC_ASSERT_MAC_LOCK(pdata
);
494 temp
= smsc911x_reg_read(pdata
, MAC_CSR_CMD
);
495 if (unlikely(temp
& MAC_CSR_CMD_CSR_BUSY_
)) {
496 SMSC_WARN(pdata
, hw
, "MAC busy at entry");
500 /* Send the MAC cmd */
501 smsc911x_reg_write(pdata
, MAC_CSR_CMD
, ((offset
& 0xFF) |
502 MAC_CSR_CMD_CSR_BUSY_
| MAC_CSR_CMD_R_NOT_W_
));
504 /* Workaround for hardware read-after-write restriction */
505 temp
= smsc911x_reg_read(pdata
, BYTE_TEST
);
507 /* Wait for the read to complete */
508 if (likely(smsc911x_mac_complete(pdata
) == 0))
509 return smsc911x_reg_read(pdata
, MAC_CSR_DATA
);
511 SMSC_WARN(pdata
, hw
, "MAC busy after read");
515 /* Set a mac register, mac_lock must be acquired before calling */
516 static void smsc911x_mac_write(struct smsc911x_data
*pdata
,
517 unsigned int offset
, u32 val
)
521 SMSC_ASSERT_MAC_LOCK(pdata
);
523 temp
= smsc911x_reg_read(pdata
, MAC_CSR_CMD
);
524 if (unlikely(temp
& MAC_CSR_CMD_CSR_BUSY_
)) {
526 "smsc911x_mac_write failed, MAC busy at entry");
530 /* Send data to write */
531 smsc911x_reg_write(pdata
, MAC_CSR_DATA
, val
);
533 /* Write the actual data */
534 smsc911x_reg_write(pdata
, MAC_CSR_CMD
, ((offset
& 0xFF) |
535 MAC_CSR_CMD_CSR_BUSY_
));
537 /* Workaround for hardware read-after-write restriction */
538 temp
= smsc911x_reg_read(pdata
, BYTE_TEST
);
540 /* Wait for the write to complete */
541 if (likely(smsc911x_mac_complete(pdata
) == 0))
544 SMSC_WARN(pdata
, hw
, "smsc911x_mac_write failed, MAC busy after write");
547 /* Get a phy register */
548 static int smsc911x_mii_read(struct mii_bus
*bus
, int phyaddr
, int regidx
)
550 struct smsc911x_data
*pdata
= (struct smsc911x_data
*)bus
->priv
;
555 spin_lock_irqsave(&pdata
->mac_lock
, flags
);
557 /* Confirm MII not busy */
558 if (unlikely(smsc911x_mac_read(pdata
, MII_ACC
) & MII_ACC_MII_BUSY_
)) {
559 SMSC_WARN(pdata
, hw
, "MII is busy in smsc911x_mii_read???");
564 /* Set the address, index & direction (read from PHY) */
565 addr
= ((phyaddr
& 0x1F) << 11) | ((regidx
& 0x1F) << 6);
566 smsc911x_mac_write(pdata
, MII_ACC
, addr
);
568 /* Wait for read to complete w/ timeout */
569 for (i
= 0; i
< 100; i
++)
570 if (!(smsc911x_mac_read(pdata
, MII_ACC
) & MII_ACC_MII_BUSY_
)) {
571 reg
= smsc911x_mac_read(pdata
, MII_DATA
);
575 SMSC_WARN(pdata
, hw
, "Timed out waiting for MII read to finish");
579 spin_unlock_irqrestore(&pdata
->mac_lock
, flags
);
583 /* Set a phy register */
584 static int smsc911x_mii_write(struct mii_bus
*bus
, int phyaddr
, int regidx
,
587 struct smsc911x_data
*pdata
= (struct smsc911x_data
*)bus
->priv
;
592 spin_lock_irqsave(&pdata
->mac_lock
, flags
);
594 /* Confirm MII not busy */
595 if (unlikely(smsc911x_mac_read(pdata
, MII_ACC
) & MII_ACC_MII_BUSY_
)) {
596 SMSC_WARN(pdata
, hw
, "MII is busy in smsc911x_mii_write???");
601 /* Put the data to write in the MAC */
602 smsc911x_mac_write(pdata
, MII_DATA
, val
);
604 /* Set the address, index & direction (write to PHY) */
605 addr
= ((phyaddr
& 0x1F) << 11) | ((regidx
& 0x1F) << 6) |
607 smsc911x_mac_write(pdata
, MII_ACC
, addr
);
609 /* Wait for write to complete w/ timeout */
610 for (i
= 0; i
< 100; i
++)
611 if (!(smsc911x_mac_read(pdata
, MII_ACC
) & MII_ACC_MII_BUSY_
)) {
616 SMSC_WARN(pdata
, hw
, "Timed out waiting for MII write to finish");
620 spin_unlock_irqrestore(&pdata
->mac_lock
, flags
);
624 /* Switch to external phy. Assumes tx and rx are stopped. */
625 static void smsc911x_phy_enable_external(struct smsc911x_data
*pdata
)
627 unsigned int hwcfg
= smsc911x_reg_read(pdata
, HW_CFG
);
629 /* Disable phy clocks to the MAC */
630 hwcfg
&= (~HW_CFG_PHY_CLK_SEL_
);
631 hwcfg
|= HW_CFG_PHY_CLK_SEL_CLK_DIS_
;
632 smsc911x_reg_write(pdata
, HW_CFG
, hwcfg
);
633 udelay(10); /* Enough time for clocks to stop */
635 /* Switch to external phy */
636 hwcfg
|= HW_CFG_EXT_PHY_EN_
;
637 smsc911x_reg_write(pdata
, HW_CFG
, hwcfg
);
639 /* Enable phy clocks to the MAC */
640 hwcfg
&= (~HW_CFG_PHY_CLK_SEL_
);
641 hwcfg
|= HW_CFG_PHY_CLK_SEL_EXT_PHY_
;
642 smsc911x_reg_write(pdata
, HW_CFG
, hwcfg
);
643 udelay(10); /* Enough time for clocks to restart */
645 hwcfg
|= HW_CFG_SMI_SEL_
;
646 smsc911x_reg_write(pdata
, HW_CFG
, hwcfg
);
649 /* Autodetects and enables external phy if present on supported chips.
650 * autodetection can be overridden by specifying SMSC911X_FORCE_INTERNAL_PHY
651 * or SMSC911X_FORCE_EXTERNAL_PHY in the platform_data flags. */
652 static void smsc911x_phy_initialise_external(struct smsc911x_data
*pdata
)
654 unsigned int hwcfg
= smsc911x_reg_read(pdata
, HW_CFG
);
656 if (pdata
->config
.flags
& SMSC911X_FORCE_INTERNAL_PHY
) {
657 SMSC_TRACE(pdata
, hw
, "Forcing internal PHY");
658 pdata
->using_extphy
= 0;
659 } else if (pdata
->config
.flags
& SMSC911X_FORCE_EXTERNAL_PHY
) {
660 SMSC_TRACE(pdata
, hw
, "Forcing external PHY");
661 smsc911x_phy_enable_external(pdata
);
662 pdata
->using_extphy
= 1;
663 } else if (hwcfg
& HW_CFG_EXT_PHY_DET_
) {
664 SMSC_TRACE(pdata
, hw
,
665 "HW_CFG EXT_PHY_DET set, using external PHY");
666 smsc911x_phy_enable_external(pdata
);
667 pdata
->using_extphy
= 1;
669 SMSC_TRACE(pdata
, hw
,
670 "HW_CFG EXT_PHY_DET clear, using internal PHY");
671 pdata
->using_extphy
= 0;
675 /* Fetches a tx status out of the status fifo */
676 static unsigned int smsc911x_tx_get_txstatus(struct smsc911x_data
*pdata
)
678 unsigned int result
=
679 smsc911x_reg_read(pdata
, TX_FIFO_INF
) & TX_FIFO_INF_TSUSED_
;
682 result
= smsc911x_reg_read(pdata
, TX_STATUS_FIFO
);
687 /* Fetches the next rx status */
688 static unsigned int smsc911x_rx_get_rxstatus(struct smsc911x_data
*pdata
)
690 unsigned int result
=
691 smsc911x_reg_read(pdata
, RX_FIFO_INF
) & RX_FIFO_INF_RXSUSED_
;
694 result
= smsc911x_reg_read(pdata
, RX_STATUS_FIFO
);
699 #ifdef USE_PHY_WORK_AROUND
700 static int smsc911x_phy_check_loopbackpkt(struct smsc911x_data
*pdata
)
707 for (tries
= 0; tries
< 10; tries
++) {
708 unsigned int txcmd_a
;
709 unsigned int txcmd_b
;
711 unsigned int pktlength
;
714 /* Zero-out rx packet memory */
715 memset(pdata
->loopback_rx_pkt
, 0, MIN_PACKET_SIZE
);
717 /* Write tx packet to 118 */
718 txcmd_a
= (u32
)((ulong
)pdata
->loopback_tx_pkt
& 0x03) << 16;
719 txcmd_a
|= TX_CMD_A_FIRST_SEG_
| TX_CMD_A_LAST_SEG_
;
720 txcmd_a
|= MIN_PACKET_SIZE
;
722 txcmd_b
= MIN_PACKET_SIZE
<< 16 | MIN_PACKET_SIZE
;
724 smsc911x_reg_write(pdata
, TX_DATA_FIFO
, txcmd_a
);
725 smsc911x_reg_write(pdata
, TX_DATA_FIFO
, txcmd_b
);
727 bufp
= (ulong
)pdata
->loopback_tx_pkt
& (~0x3);
728 wrsz
= MIN_PACKET_SIZE
+ 3;
729 wrsz
+= (u32
)((ulong
)pdata
->loopback_tx_pkt
& 0x3);
732 pdata
->ops
->tx_writefifo(pdata
, (unsigned int *)bufp
, wrsz
);
734 /* Wait till transmit is done */
738 status
= smsc911x_tx_get_txstatus(pdata
);
739 } while ((i
--) && (!status
));
743 "Failed to transmit during loopback test");
746 if (status
& TX_STS_ES_
) {
748 "Transmit encountered errors during loopback test");
752 /* Wait till receive is done */
756 status
= smsc911x_rx_get_rxstatus(pdata
);
757 } while ((i
--) && (!status
));
761 "Failed to receive during loopback test");
764 if (status
& RX_STS_ES_
) {
766 "Receive encountered errors during loopback test");
770 pktlength
= ((status
& 0x3FFF0000UL
) >> 16);
771 bufp
= (ulong
)pdata
->loopback_rx_pkt
;
772 rdsz
= pktlength
+ 3;
773 rdsz
+= (u32
)((ulong
)pdata
->loopback_rx_pkt
& 0x3);
776 pdata
->ops
->rx_readfifo(pdata
, (unsigned int *)bufp
, rdsz
);
778 if (pktlength
!= (MIN_PACKET_SIZE
+ 4)) {
779 SMSC_WARN(pdata
, hw
, "Unexpected packet size "
780 "during loop back test, size=%d, will retry",
785 for (j
= 0; j
< MIN_PACKET_SIZE
; j
++) {
786 if (pdata
->loopback_tx_pkt
[j
]
787 != pdata
->loopback_rx_pkt
[j
]) {
793 SMSC_TRACE(pdata
, hw
, "Successfully verified "
797 SMSC_WARN(pdata
, hw
, "Data mismatch "
798 "during loop back test, will retry");
806 static int smsc911x_phy_reset(struct smsc911x_data
*pdata
)
808 struct phy_device
*phy_dev
= pdata
->phy_dev
;
810 unsigned int i
= 100000;
813 BUG_ON(!phy_dev
->bus
);
815 SMSC_TRACE(pdata
, hw
, "Performing PHY BCR Reset");
816 smsc911x_mii_write(phy_dev
->bus
, phy_dev
->addr
, MII_BMCR
, BMCR_RESET
);
819 temp
= smsc911x_mii_read(phy_dev
->bus
, phy_dev
->addr
,
821 } while ((i
--) && (temp
& BMCR_RESET
));
823 if (temp
& BMCR_RESET
) {
824 SMSC_WARN(pdata
, hw
, "PHY reset failed to complete");
827 /* Extra delay required because the phy may not be completed with
828 * its reset when BMCR_RESET is cleared. Specs say 256 uS is
829 * enough delay but using 1ms here to be safe */
835 static int smsc911x_phy_loopbacktest(struct net_device
*dev
)
837 struct smsc911x_data
*pdata
= netdev_priv(dev
);
838 struct phy_device
*phy_dev
= pdata
->phy_dev
;
843 /* Initialise tx packet using broadcast destination address */
844 memset(pdata
->loopback_tx_pkt
, 0xff, ETH_ALEN
);
846 /* Use incrementing source address */
847 for (i
= 6; i
< 12; i
++)
848 pdata
->loopback_tx_pkt
[i
] = (char)i
;
850 /* Set length type field */
851 pdata
->loopback_tx_pkt
[12] = 0x00;
852 pdata
->loopback_tx_pkt
[13] = 0x00;
854 for (i
= 14; i
< MIN_PACKET_SIZE
; i
++)
855 pdata
->loopback_tx_pkt
[i
] = (char)i
;
857 val
= smsc911x_reg_read(pdata
, HW_CFG
);
858 val
&= HW_CFG_TX_FIF_SZ_
;
860 smsc911x_reg_write(pdata
, HW_CFG
, val
);
862 smsc911x_reg_write(pdata
, TX_CFG
, TX_CFG_TX_ON_
);
863 smsc911x_reg_write(pdata
, RX_CFG
,
864 (u32
)((ulong
)pdata
->loopback_rx_pkt
& 0x03) << 8);
866 for (i
= 0; i
< 10; i
++) {
867 /* Set PHY to 10/FD, no ANEG, and loopback mode */
868 smsc911x_mii_write(phy_dev
->bus
, phy_dev
->addr
, MII_BMCR
,
869 BMCR_LOOPBACK
| BMCR_FULLDPLX
);
871 /* Enable MAC tx/rx, FD */
872 spin_lock_irqsave(&pdata
->mac_lock
, flags
);
873 smsc911x_mac_write(pdata
, MAC_CR
, MAC_CR_FDPX_
874 | MAC_CR_TXEN_
| MAC_CR_RXEN_
);
875 spin_unlock_irqrestore(&pdata
->mac_lock
, flags
);
877 if (smsc911x_phy_check_loopbackpkt(pdata
) == 0) {
884 spin_lock_irqsave(&pdata
->mac_lock
, flags
);
885 smsc911x_mac_write(pdata
, MAC_CR
, 0);
886 spin_unlock_irqrestore(&pdata
->mac_lock
, flags
);
888 smsc911x_phy_reset(pdata
);
892 spin_lock_irqsave(&pdata
->mac_lock
, flags
);
893 smsc911x_mac_write(pdata
, MAC_CR
, 0);
894 spin_unlock_irqrestore(&pdata
->mac_lock
, flags
);
896 /* Cancel PHY loopback mode */
897 smsc911x_mii_write(phy_dev
->bus
, phy_dev
->addr
, MII_BMCR
, 0);
899 smsc911x_reg_write(pdata
, TX_CFG
, 0);
900 smsc911x_reg_write(pdata
, RX_CFG
, 0);
904 #endif /* USE_PHY_WORK_AROUND */
906 static void smsc911x_phy_update_flowcontrol(struct smsc911x_data
*pdata
)
908 struct phy_device
*phy_dev
= pdata
->phy_dev
;
909 u32 afc
= smsc911x_reg_read(pdata
, AFC_CFG
);
913 if (phy_dev
->duplex
== DUPLEX_FULL
) {
914 u16 lcladv
= phy_read(phy_dev
, MII_ADVERTISE
);
915 u16 rmtadv
= phy_read(phy_dev
, MII_LPA
);
916 u8 cap
= mii_resolve_flowctrl_fdx(lcladv
, rmtadv
);
918 if (cap
& FLOW_CTRL_RX
)
923 if (cap
& FLOW_CTRL_TX
)
928 SMSC_TRACE(pdata
, hw
, "rx pause %s, tx pause %s",
929 (cap
& FLOW_CTRL_RX
? "enabled" : "disabled"),
930 (cap
& FLOW_CTRL_TX
? "enabled" : "disabled"));
932 SMSC_TRACE(pdata
, hw
, "half duplex");
937 spin_lock_irqsave(&pdata
->mac_lock
, flags
);
938 smsc911x_mac_write(pdata
, FLOW
, flow
);
939 spin_unlock_irqrestore(&pdata
->mac_lock
, flags
);
941 smsc911x_reg_write(pdata
, AFC_CFG
, afc
);
944 /* Update link mode if anything has changed. Called periodically when the
945 * PHY is in polling mode, even if nothing has changed. */
946 static void smsc911x_phy_adjust_link(struct net_device
*dev
)
948 struct smsc911x_data
*pdata
= netdev_priv(dev
);
949 struct phy_device
*phy_dev
= pdata
->phy_dev
;
953 if (phy_dev
->duplex
!= pdata
->last_duplex
) {
955 SMSC_TRACE(pdata
, hw
, "duplex state has changed");
957 spin_lock_irqsave(&pdata
->mac_lock
, flags
);
958 mac_cr
= smsc911x_mac_read(pdata
, MAC_CR
);
959 if (phy_dev
->duplex
) {
960 SMSC_TRACE(pdata
, hw
,
961 "configuring for full duplex mode");
962 mac_cr
|= MAC_CR_FDPX_
;
964 SMSC_TRACE(pdata
, hw
,
965 "configuring for half duplex mode");
966 mac_cr
&= ~MAC_CR_FDPX_
;
968 smsc911x_mac_write(pdata
, MAC_CR
, mac_cr
);
969 spin_unlock_irqrestore(&pdata
->mac_lock
, flags
);
971 smsc911x_phy_update_flowcontrol(pdata
);
972 pdata
->last_duplex
= phy_dev
->duplex
;
975 carrier
= netif_carrier_ok(dev
);
976 if (carrier
!= pdata
->last_carrier
) {
977 SMSC_TRACE(pdata
, hw
, "carrier state has changed");
979 SMSC_TRACE(pdata
, hw
, "configuring for carrier OK");
980 if ((pdata
->gpio_orig_setting
& GPIO_CFG_LED1_EN_
) &&
981 (!pdata
->using_extphy
)) {
982 /* Restore original GPIO configuration */
983 pdata
->gpio_setting
= pdata
->gpio_orig_setting
;
984 smsc911x_reg_write(pdata
, GPIO_CFG
,
985 pdata
->gpio_setting
);
988 SMSC_TRACE(pdata
, hw
, "configuring for no carrier");
989 /* Check global setting that LED1
990 * usage is 10/100 indicator */
991 pdata
->gpio_setting
= smsc911x_reg_read(pdata
,
993 if ((pdata
->gpio_setting
& GPIO_CFG_LED1_EN_
) &&
994 (!pdata
->using_extphy
)) {
995 /* Force 10/100 LED off, after saving
996 * original GPIO configuration */
997 pdata
->gpio_orig_setting
= pdata
->gpio_setting
;
999 pdata
->gpio_setting
&= ~GPIO_CFG_LED1_EN_
;
1000 pdata
->gpio_setting
|= (GPIO_CFG_GPIOBUF0_
1001 | GPIO_CFG_GPIODIR0_
1002 | GPIO_CFG_GPIOD0_
);
1003 smsc911x_reg_write(pdata
, GPIO_CFG
,
1004 pdata
->gpio_setting
);
1007 pdata
->last_carrier
= carrier
;
1011 static int smsc911x_mii_probe(struct net_device
*dev
)
1013 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1014 struct phy_device
*phydev
= NULL
;
1017 /* find the first phy */
1018 phydev
= phy_find_first(pdata
->mii_bus
);
1020 netdev_err(dev
, "no PHY found\n");
1024 SMSC_TRACE(pdata
, probe
, "PHY: addr %d, phy_id 0x%08X",
1025 phydev
->addr
, phydev
->phy_id
);
1027 ret
= phy_connect_direct(dev
, phydev
, &smsc911x_phy_adjust_link
,
1028 pdata
->config
.phy_interface
);
1031 netdev_err(dev
, "Could not attach to PHY\n");
1036 "attached PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n",
1037 phydev
->drv
->name
, dev_name(&phydev
->dev
), phydev
->irq
);
1039 /* mask with MAC supported features */
1040 phydev
->supported
&= (PHY_BASIC_FEATURES
| SUPPORTED_Pause
|
1041 SUPPORTED_Asym_Pause
);
1042 phydev
->advertising
= phydev
->supported
;
1044 pdata
->phy_dev
= phydev
;
1045 pdata
->last_duplex
= -1;
1046 pdata
->last_carrier
= -1;
1048 #ifdef USE_PHY_WORK_AROUND
1049 if (smsc911x_phy_loopbacktest(dev
) < 0) {
1050 SMSC_WARN(pdata
, hw
, "Failed Loop Back Test");
1053 SMSC_TRACE(pdata
, hw
, "Passed Loop Back Test");
1054 #endif /* USE_PHY_WORK_AROUND */
1056 SMSC_TRACE(pdata
, hw
, "phy initialised successfully");
1060 static int smsc911x_mii_init(struct platform_device
*pdev
,
1061 struct net_device
*dev
)
1063 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1064 int err
= -ENXIO
, i
;
1066 pdata
->mii_bus
= mdiobus_alloc();
1067 if (!pdata
->mii_bus
) {
1072 pdata
->mii_bus
->name
= SMSC_MDIONAME
;
1073 snprintf(pdata
->mii_bus
->id
, MII_BUS_ID_SIZE
, "%s-%x",
1074 pdev
->name
, pdev
->id
);
1075 pdata
->mii_bus
->priv
= pdata
;
1076 pdata
->mii_bus
->read
= smsc911x_mii_read
;
1077 pdata
->mii_bus
->write
= smsc911x_mii_write
;
1078 pdata
->mii_bus
->irq
= pdata
->phy_irq
;
1079 for (i
= 0; i
< PHY_MAX_ADDR
; ++i
)
1080 pdata
->mii_bus
->irq
[i
] = PHY_POLL
;
1082 pdata
->mii_bus
->parent
= &pdev
->dev
;
1084 switch (pdata
->idrev
& 0xFFFF0000) {
1089 /* External PHY supported, try to autodetect */
1090 smsc911x_phy_initialise_external(pdata
);
1093 SMSC_TRACE(pdata
, hw
, "External PHY is not supported, "
1094 "using internal PHY");
1095 pdata
->using_extphy
= 0;
1099 if (!pdata
->using_extphy
) {
1100 /* Mask all PHYs except ID 1 (internal) */
1101 pdata
->mii_bus
->phy_mask
= ~(1 << 1);
1104 if (mdiobus_register(pdata
->mii_bus
)) {
1105 SMSC_WARN(pdata
, probe
, "Error registering mii bus");
1106 goto err_out_free_bus_2
;
1109 if (smsc911x_mii_probe(dev
) < 0) {
1110 SMSC_WARN(pdata
, probe
, "Error registering mii bus");
1111 goto err_out_unregister_bus_3
;
1116 err_out_unregister_bus_3
:
1117 mdiobus_unregister(pdata
->mii_bus
);
1119 mdiobus_free(pdata
->mii_bus
);
1124 /* Gets the number of tx statuses in the fifo */
1125 static unsigned int smsc911x_tx_get_txstatcount(struct smsc911x_data
*pdata
)
1127 return (smsc911x_reg_read(pdata
, TX_FIFO_INF
)
1128 & TX_FIFO_INF_TSUSED_
) >> 16;
1131 /* Reads tx statuses and increments counters where necessary */
1132 static void smsc911x_tx_update_txcounters(struct net_device
*dev
)
1134 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1135 unsigned int tx_stat
;
1137 while ((tx_stat
= smsc911x_tx_get_txstatus(pdata
)) != 0) {
1138 if (unlikely(tx_stat
& 0x80000000)) {
1139 /* In this driver the packet tag is used as the packet
1140 * length. Since a packet length can never reach the
1141 * size of 0x8000, this bit is reserved. It is worth
1142 * noting that the "reserved bit" in the warning above
1143 * does not reference a hardware defined reserved bit
1144 * but rather a driver defined one.
1146 SMSC_WARN(pdata
, hw
, "Packet tag reserved bit is high");
1148 if (unlikely(tx_stat
& TX_STS_ES_
)) {
1149 dev
->stats
.tx_errors
++;
1151 dev
->stats
.tx_packets
++;
1152 dev
->stats
.tx_bytes
+= (tx_stat
>> 16);
1154 if (unlikely(tx_stat
& TX_STS_EXCESS_COL_
)) {
1155 dev
->stats
.collisions
+= 16;
1156 dev
->stats
.tx_aborted_errors
+= 1;
1158 dev
->stats
.collisions
+=
1159 ((tx_stat
>> 3) & 0xF);
1161 if (unlikely(tx_stat
& TX_STS_LOST_CARRIER_
))
1162 dev
->stats
.tx_carrier_errors
+= 1;
1163 if (unlikely(tx_stat
& TX_STS_LATE_COL_
)) {
1164 dev
->stats
.collisions
++;
1165 dev
->stats
.tx_aborted_errors
++;
1171 /* Increments the Rx error counters */
1173 smsc911x_rx_counterrors(struct net_device
*dev
, unsigned int rxstat
)
1177 if (unlikely(rxstat
& RX_STS_ES_
)) {
1178 dev
->stats
.rx_errors
++;
1179 if (unlikely(rxstat
& RX_STS_CRC_ERR_
)) {
1180 dev
->stats
.rx_crc_errors
++;
1184 if (likely(!crc_err
)) {
1185 if (unlikely((rxstat
& RX_STS_FRAME_TYPE_
) &&
1186 (rxstat
& RX_STS_LENGTH_ERR_
)))
1187 dev
->stats
.rx_length_errors
++;
1188 if (rxstat
& RX_STS_MCAST_
)
1189 dev
->stats
.multicast
++;
1193 /* Quickly dumps bad packets */
1195 smsc911x_rx_fastforward(struct smsc911x_data
*pdata
, unsigned int pktwords
)
1197 if (likely(pktwords
>= 4)) {
1198 unsigned int timeout
= 500;
1200 smsc911x_reg_write(pdata
, RX_DP_CTRL
, RX_DP_CTRL_RX_FFWD_
);
1203 val
= smsc911x_reg_read(pdata
, RX_DP_CTRL
);
1204 } while ((val
& RX_DP_CTRL_RX_FFWD_
) && --timeout
);
1206 if (unlikely(timeout
== 0))
1207 SMSC_WARN(pdata
, hw
, "Timed out waiting for "
1208 "RX FFWD to finish, RX_DP_CTRL: 0x%08X", val
);
1212 temp
= smsc911x_reg_read(pdata
, RX_DATA_FIFO
);
1216 /* NAPI poll function */
1217 static int smsc911x_poll(struct napi_struct
*napi
, int budget
)
1219 struct smsc911x_data
*pdata
=
1220 container_of(napi
, struct smsc911x_data
, napi
);
1221 struct net_device
*dev
= pdata
->dev
;
1224 while (npackets
< budget
) {
1225 unsigned int pktlength
;
1226 unsigned int pktwords
;
1227 struct sk_buff
*skb
;
1228 unsigned int rxstat
= smsc911x_rx_get_rxstatus(pdata
);
1232 /* We processed all packets available. Tell NAPI it can
1233 * stop polling then re-enable rx interrupts */
1234 smsc911x_reg_write(pdata
, INT_STS
, INT_STS_RSFL_
);
1235 napi_complete(napi
);
1236 temp
= smsc911x_reg_read(pdata
, INT_EN
);
1237 temp
|= INT_EN_RSFL_EN_
;
1238 smsc911x_reg_write(pdata
, INT_EN
, temp
);
1242 /* Count packet for NAPI scheduling, even if it has an error.
1243 * Error packets still require cycles to discard */
1246 pktlength
= ((rxstat
& 0x3FFF0000) >> 16);
1247 pktwords
= (pktlength
+ NET_IP_ALIGN
+ 3) >> 2;
1248 smsc911x_rx_counterrors(dev
, rxstat
);
1250 if (unlikely(rxstat
& RX_STS_ES_
)) {
1251 SMSC_WARN(pdata
, rx_err
,
1252 "Discarding packet with error bit set");
1253 /* Packet has an error, discard it and continue with
1255 smsc911x_rx_fastforward(pdata
, pktwords
);
1256 dev
->stats
.rx_dropped
++;
1260 skb
= netdev_alloc_skb(dev
, pktwords
<< 2);
1261 if (unlikely(!skb
)) {
1262 SMSC_WARN(pdata
, rx_err
,
1263 "Unable to allocate skb for rx packet");
1264 /* Drop the packet and stop this polling iteration */
1265 smsc911x_rx_fastforward(pdata
, pktwords
);
1266 dev
->stats
.rx_dropped
++;
1270 pdata
->ops
->rx_readfifo(pdata
,
1271 (unsigned int *)skb
->data
, pktwords
);
1273 /* Align IP on 16B boundary */
1274 skb_reserve(skb
, NET_IP_ALIGN
);
1275 skb_put(skb
, pktlength
- 4);
1276 skb
->protocol
= eth_type_trans(skb
, dev
);
1277 skb_checksum_none_assert(skb
);
1278 netif_receive_skb(skb
);
1280 /* Update counters */
1281 dev
->stats
.rx_packets
++;
1282 dev
->stats
.rx_bytes
+= (pktlength
- 4);
1285 /* Return total received packets */
1289 /* Returns hash bit number for given MAC address
1291 * 01 00 5E 00 00 01 -> returns bit number 31 */
1292 static unsigned int smsc911x_hash(char addr
[ETH_ALEN
])
1294 return (ether_crc(ETH_ALEN
, addr
) >> 26) & 0x3f;
1297 static void smsc911x_rx_multicast_update(struct smsc911x_data
*pdata
)
1299 /* Performs the multicast & mac_cr update. This is called when
1300 * safe on the current hardware, and with the mac_lock held */
1301 unsigned int mac_cr
;
1303 SMSC_ASSERT_MAC_LOCK(pdata
);
1305 mac_cr
= smsc911x_mac_read(pdata
, MAC_CR
);
1306 mac_cr
|= pdata
->set_bits_mask
;
1307 mac_cr
&= ~(pdata
->clear_bits_mask
);
1308 smsc911x_mac_write(pdata
, MAC_CR
, mac_cr
);
1309 smsc911x_mac_write(pdata
, HASHH
, pdata
->hashhi
);
1310 smsc911x_mac_write(pdata
, HASHL
, pdata
->hashlo
);
1311 SMSC_TRACE(pdata
, hw
, "maccr 0x%08X, HASHH 0x%08X, HASHL 0x%08X",
1312 mac_cr
, pdata
->hashhi
, pdata
->hashlo
);
1315 static void smsc911x_rx_multicast_update_workaround(struct smsc911x_data
*pdata
)
1317 unsigned int mac_cr
;
1319 /* This function is only called for older LAN911x devices
1320 * (revA or revB), where MAC_CR, HASHH and HASHL should not
1321 * be modified during Rx - newer devices immediately update the
1324 * This is called from interrupt context */
1326 spin_lock(&pdata
->mac_lock
);
1328 /* Check Rx has stopped */
1329 if (smsc911x_mac_read(pdata
, MAC_CR
) & MAC_CR_RXEN_
)
1330 SMSC_WARN(pdata
, drv
, "Rx not stopped");
1332 /* Perform the update - safe to do now Rx has stopped */
1333 smsc911x_rx_multicast_update(pdata
);
1336 mac_cr
= smsc911x_mac_read(pdata
, MAC_CR
);
1337 mac_cr
|= MAC_CR_RXEN_
;
1338 smsc911x_mac_write(pdata
, MAC_CR
, mac_cr
);
1340 pdata
->multicast_update_pending
= 0;
1342 spin_unlock(&pdata
->mac_lock
);
1345 static int smsc911x_phy_disable_energy_detect(struct smsc911x_data
*pdata
)
1349 if (!pdata
->phy_dev
)
1352 rc
= phy_read(pdata
->phy_dev
, MII_LAN83C185_CTRL_STATUS
);
1355 SMSC_WARN(pdata
, drv
, "Failed reading PHY control reg");
1360 * If energy is detected the PHY is already awake so is not necessary
1361 * to disable the energy detect power-down mode.
1363 if ((rc
& MII_LAN83C185_EDPWRDOWN
) &&
1364 !(rc
& MII_LAN83C185_ENERGYON
)) {
1365 /* Disable energy detect mode for this SMSC Transceivers */
1366 rc
= phy_write(pdata
->phy_dev
, MII_LAN83C185_CTRL_STATUS
,
1367 rc
& (~MII_LAN83C185_EDPWRDOWN
));
1370 SMSC_WARN(pdata
, drv
, "Failed writing PHY control reg");
1380 static int smsc911x_phy_enable_energy_detect(struct smsc911x_data
*pdata
)
1384 if (!pdata
->phy_dev
)
1387 rc
= phy_read(pdata
->phy_dev
, MII_LAN83C185_CTRL_STATUS
);
1390 SMSC_WARN(pdata
, drv
, "Failed reading PHY control reg");
1394 /* Only enable if energy detect mode is already disabled */
1395 if (!(rc
& MII_LAN83C185_EDPWRDOWN
)) {
1397 /* Enable energy detect mode for this SMSC Transceivers */
1398 rc
= phy_write(pdata
->phy_dev
, MII_LAN83C185_CTRL_STATUS
,
1399 rc
| MII_LAN83C185_EDPWRDOWN
);
1402 SMSC_WARN(pdata
, drv
, "Failed writing PHY control reg");
1411 static int smsc911x_soft_reset(struct smsc911x_data
*pdata
)
1413 unsigned int timeout
;
1418 * LAN9210/LAN9211/LAN9220/LAN9221 chips have an internal PHY that
1419 * are initialized in a Energy Detect Power-Down mode that prevents
1420 * the MAC chip to be software reseted. So we have to wakeup the PHY
1423 if (pdata
->generation
== 4) {
1424 ret
= smsc911x_phy_disable_energy_detect(pdata
);
1427 SMSC_WARN(pdata
, drv
, "Failed to wakeup the PHY chip");
1432 /* Reset the LAN911x */
1433 smsc911x_reg_write(pdata
, HW_CFG
, HW_CFG_SRST_
);
1437 temp
= smsc911x_reg_read(pdata
, HW_CFG
);
1438 } while ((--timeout
) && (temp
& HW_CFG_SRST_
));
1440 if (unlikely(temp
& HW_CFG_SRST_
)) {
1441 SMSC_WARN(pdata
, drv
, "Failed to complete reset");
1445 if (pdata
->generation
== 4) {
1446 ret
= smsc911x_phy_enable_energy_detect(pdata
);
1449 SMSC_WARN(pdata
, drv
, "Failed to wakeup the PHY chip");
1457 /* Sets the device MAC address to dev_addr, called with mac_lock held */
1459 smsc911x_set_hw_mac_address(struct smsc911x_data
*pdata
, u8 dev_addr
[6])
1461 u32 mac_high16
= (dev_addr
[5] << 8) | dev_addr
[4];
1462 u32 mac_low32
= (dev_addr
[3] << 24) | (dev_addr
[2] << 16) |
1463 (dev_addr
[1] << 8) | dev_addr
[0];
1465 SMSC_ASSERT_MAC_LOCK(pdata
);
1467 smsc911x_mac_write(pdata
, ADDRH
, mac_high16
);
1468 smsc911x_mac_write(pdata
, ADDRL
, mac_low32
);
1471 static void smsc911x_disable_irq_chip(struct net_device
*dev
)
1473 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1475 smsc911x_reg_write(pdata
, INT_EN
, 0);
1476 smsc911x_reg_write(pdata
, INT_STS
, 0xFFFFFFFF);
1479 static int smsc911x_open(struct net_device
*dev
)
1481 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1482 unsigned int timeout
;
1484 unsigned int intcfg
;
1486 /* if the phy is not yet registered, retry later*/
1487 if (!pdata
->phy_dev
) {
1488 SMSC_WARN(pdata
, hw
, "phy_dev is NULL");
1492 /* Reset the LAN911x */
1493 if (smsc911x_soft_reset(pdata
)) {
1494 SMSC_WARN(pdata
, hw
, "soft reset failed");
1498 smsc911x_reg_write(pdata
, HW_CFG
, 0x00050000);
1499 smsc911x_reg_write(pdata
, AFC_CFG
, 0x006E3740);
1501 /* Increase the legal frame size of VLAN tagged frames to 1522 bytes */
1502 spin_lock_irq(&pdata
->mac_lock
);
1503 smsc911x_mac_write(pdata
, VLAN1
, ETH_P_8021Q
);
1504 spin_unlock_irq(&pdata
->mac_lock
);
1506 /* Make sure EEPROM has finished loading before setting GPIO_CFG */
1508 while ((smsc911x_reg_read(pdata
, E2P_CMD
) & E2P_CMD_EPC_BUSY_
) &&
1513 if (unlikely(timeout
== 0))
1514 SMSC_WARN(pdata
, ifup
,
1515 "Timed out waiting for EEPROM busy bit to clear");
1517 smsc911x_reg_write(pdata
, GPIO_CFG
, 0x70070000);
1519 /* The soft reset above cleared the device's MAC address,
1520 * restore it from local copy (set in probe) */
1521 spin_lock_irq(&pdata
->mac_lock
);
1522 smsc911x_set_hw_mac_address(pdata
, dev
->dev_addr
);
1523 spin_unlock_irq(&pdata
->mac_lock
);
1525 /* Initialise irqs, but leave all sources disabled */
1526 smsc911x_disable_irq_chip(dev
);
1528 /* Set interrupt deassertion to 100uS */
1529 intcfg
= ((10 << 24) | INT_CFG_IRQ_EN_
);
1531 if (pdata
->config
.irq_polarity
) {
1532 SMSC_TRACE(pdata
, ifup
, "irq polarity: active high");
1533 intcfg
|= INT_CFG_IRQ_POL_
;
1535 SMSC_TRACE(pdata
, ifup
, "irq polarity: active low");
1538 if (pdata
->config
.irq_type
) {
1539 SMSC_TRACE(pdata
, ifup
, "irq type: push-pull");
1540 intcfg
|= INT_CFG_IRQ_TYPE_
;
1542 SMSC_TRACE(pdata
, ifup
, "irq type: open drain");
1545 smsc911x_reg_write(pdata
, INT_CFG
, intcfg
);
1547 SMSC_TRACE(pdata
, ifup
, "Testing irq handler using IRQ %d", dev
->irq
);
1548 pdata
->software_irq_signal
= 0;
1551 temp
= smsc911x_reg_read(pdata
, INT_EN
);
1552 temp
|= INT_EN_SW_INT_EN_
;
1553 smsc911x_reg_write(pdata
, INT_EN
, temp
);
1557 if (pdata
->software_irq_signal
)
1562 if (!pdata
->software_irq_signal
) {
1563 netdev_warn(dev
, "ISR failed signaling test (IRQ %d)\n",
1567 SMSC_TRACE(pdata
, ifup
, "IRQ handler passed test using IRQ %d",
1570 netdev_info(dev
, "SMSC911x/921x identified at %#08lx, IRQ: %d\n",
1571 (unsigned long)pdata
->ioaddr
, dev
->irq
);
1573 /* Reset the last known duplex and carrier */
1574 pdata
->last_duplex
= -1;
1575 pdata
->last_carrier
= -1;
1577 /* Bring the PHY up */
1578 phy_start(pdata
->phy_dev
);
1580 temp
= smsc911x_reg_read(pdata
, HW_CFG
);
1581 /* Preserve TX FIFO size and external PHY configuration */
1582 temp
&= (HW_CFG_TX_FIF_SZ_
|0x00000FFF);
1584 smsc911x_reg_write(pdata
, HW_CFG
, temp
);
1586 temp
= smsc911x_reg_read(pdata
, FIFO_INT
);
1587 temp
|= FIFO_INT_TX_AVAIL_LEVEL_
;
1588 temp
&= ~(FIFO_INT_RX_STS_LEVEL_
);
1589 smsc911x_reg_write(pdata
, FIFO_INT
, temp
);
1591 /* set RX Data offset to 2 bytes for alignment */
1592 smsc911x_reg_write(pdata
, RX_CFG
, (NET_IP_ALIGN
<< 8));
1594 /* enable NAPI polling before enabling RX interrupts */
1595 napi_enable(&pdata
->napi
);
1597 temp
= smsc911x_reg_read(pdata
, INT_EN
);
1598 temp
|= (INT_EN_TDFA_EN_
| INT_EN_RSFL_EN_
| INT_EN_RXSTOP_INT_EN_
);
1599 smsc911x_reg_write(pdata
, INT_EN
, temp
);
1601 spin_lock_irq(&pdata
->mac_lock
);
1602 temp
= smsc911x_mac_read(pdata
, MAC_CR
);
1603 temp
|= (MAC_CR_TXEN_
| MAC_CR_RXEN_
| MAC_CR_HBDIS_
);
1604 smsc911x_mac_write(pdata
, MAC_CR
, temp
);
1605 spin_unlock_irq(&pdata
->mac_lock
);
1607 smsc911x_reg_write(pdata
, TX_CFG
, TX_CFG_TX_ON_
);
1609 netif_start_queue(dev
);
1613 /* Entry point for stopping the interface */
1614 static int smsc911x_stop(struct net_device
*dev
)
1616 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1619 /* Disable all device interrupts */
1620 temp
= smsc911x_reg_read(pdata
, INT_CFG
);
1621 temp
&= ~INT_CFG_IRQ_EN_
;
1622 smsc911x_reg_write(pdata
, INT_CFG
, temp
);
1624 /* Stop Tx and Rx polling */
1625 netif_stop_queue(dev
);
1626 napi_disable(&pdata
->napi
);
1628 /* At this point all Rx and Tx activity is stopped */
1629 dev
->stats
.rx_dropped
+= smsc911x_reg_read(pdata
, RX_DROP
);
1630 smsc911x_tx_update_txcounters(dev
);
1632 /* Bring the PHY down */
1634 phy_stop(pdata
->phy_dev
);
1636 SMSC_TRACE(pdata
, ifdown
, "Interface stopped");
1640 /* Entry point for transmitting a packet */
1641 static int smsc911x_hard_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
1643 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1644 unsigned int freespace
;
1645 unsigned int tx_cmd_a
;
1646 unsigned int tx_cmd_b
;
1651 freespace
= smsc911x_reg_read(pdata
, TX_FIFO_INF
) & TX_FIFO_INF_TDFREE_
;
1653 if (unlikely(freespace
< TX_FIFO_LOW_THRESHOLD
))
1654 SMSC_WARN(pdata
, tx_err
,
1655 "Tx data fifo low, space available: %d", freespace
);
1657 /* Word alignment adjustment */
1658 tx_cmd_a
= (u32
)((ulong
)skb
->data
& 0x03) << 16;
1659 tx_cmd_a
|= TX_CMD_A_FIRST_SEG_
| TX_CMD_A_LAST_SEG_
;
1660 tx_cmd_a
|= (unsigned int)skb
->len
;
1662 tx_cmd_b
= ((unsigned int)skb
->len
) << 16;
1663 tx_cmd_b
|= (unsigned int)skb
->len
;
1665 smsc911x_reg_write(pdata
, TX_DATA_FIFO
, tx_cmd_a
);
1666 smsc911x_reg_write(pdata
, TX_DATA_FIFO
, tx_cmd_b
);
1668 bufp
= (ulong
)skb
->data
& (~0x3);
1669 wrsz
= (u32
)skb
->len
+ 3;
1670 wrsz
+= (u32
)((ulong
)skb
->data
& 0x3);
1673 pdata
->ops
->tx_writefifo(pdata
, (unsigned int *)bufp
, wrsz
);
1674 freespace
-= (skb
->len
+ 32);
1675 skb_tx_timestamp(skb
);
1678 if (unlikely(smsc911x_tx_get_txstatcount(pdata
) >= 30))
1679 smsc911x_tx_update_txcounters(dev
);
1681 if (freespace
< TX_FIFO_LOW_THRESHOLD
) {
1682 netif_stop_queue(dev
);
1683 temp
= smsc911x_reg_read(pdata
, FIFO_INT
);
1686 smsc911x_reg_write(pdata
, FIFO_INT
, temp
);
1689 return NETDEV_TX_OK
;
1692 /* Entry point for getting status counters */
1693 static struct net_device_stats
*smsc911x_get_stats(struct net_device
*dev
)
1695 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1696 smsc911x_tx_update_txcounters(dev
);
1697 dev
->stats
.rx_dropped
+= smsc911x_reg_read(pdata
, RX_DROP
);
1701 /* Entry point for setting addressing modes */
1702 static void smsc911x_set_multicast_list(struct net_device
*dev
)
1704 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1705 unsigned long flags
;
1707 if (dev
->flags
& IFF_PROMISC
) {
1708 /* Enabling promiscuous mode */
1709 pdata
->set_bits_mask
= MAC_CR_PRMS_
;
1710 pdata
->clear_bits_mask
= (MAC_CR_MCPAS_
| MAC_CR_HPFILT_
);
1713 } else if (dev
->flags
& IFF_ALLMULTI
) {
1714 /* Enabling all multicast mode */
1715 pdata
->set_bits_mask
= MAC_CR_MCPAS_
;
1716 pdata
->clear_bits_mask
= (MAC_CR_PRMS_
| MAC_CR_HPFILT_
);
1719 } else if (!netdev_mc_empty(dev
)) {
1720 /* Enabling specific multicast addresses */
1721 unsigned int hash_high
= 0;
1722 unsigned int hash_low
= 0;
1723 struct netdev_hw_addr
*ha
;
1725 pdata
->set_bits_mask
= MAC_CR_HPFILT_
;
1726 pdata
->clear_bits_mask
= (MAC_CR_PRMS_
| MAC_CR_MCPAS_
);
1728 netdev_for_each_mc_addr(ha
, dev
) {
1729 unsigned int bitnum
= smsc911x_hash(ha
->addr
);
1730 unsigned int mask
= 0x01 << (bitnum
& 0x1F);
1738 pdata
->hashhi
= hash_high
;
1739 pdata
->hashlo
= hash_low
;
1741 /* Enabling local MAC address only */
1742 pdata
->set_bits_mask
= 0;
1743 pdata
->clear_bits_mask
=
1744 (MAC_CR_PRMS_
| MAC_CR_MCPAS_
| MAC_CR_HPFILT_
);
1749 spin_lock_irqsave(&pdata
->mac_lock
, flags
);
1751 if (pdata
->generation
<= 1) {
1752 /* Older hardware revision - cannot change these flags while
1754 if (!pdata
->multicast_update_pending
) {
1756 SMSC_TRACE(pdata
, hw
, "scheduling mcast update");
1757 pdata
->multicast_update_pending
= 1;
1759 /* Request the hardware to stop, then perform the
1760 * update when we get an RX_STOP interrupt */
1761 temp
= smsc911x_mac_read(pdata
, MAC_CR
);
1762 temp
&= ~(MAC_CR_RXEN_
);
1763 smsc911x_mac_write(pdata
, MAC_CR
, temp
);
1765 /* There is another update pending, this should now
1766 * use the newer values */
1769 /* Newer hardware revision - can write immediately */
1770 smsc911x_rx_multicast_update(pdata
);
1773 spin_unlock_irqrestore(&pdata
->mac_lock
, flags
);
1776 static irqreturn_t
smsc911x_irqhandler(int irq
, void *dev_id
)
1778 struct net_device
*dev
= dev_id
;
1779 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1780 u32 intsts
= smsc911x_reg_read(pdata
, INT_STS
);
1781 u32 inten
= smsc911x_reg_read(pdata
, INT_EN
);
1782 int serviced
= IRQ_NONE
;
1785 if (unlikely(intsts
& inten
& INT_STS_SW_INT_
)) {
1786 temp
= smsc911x_reg_read(pdata
, INT_EN
);
1787 temp
&= (~INT_EN_SW_INT_EN_
);
1788 smsc911x_reg_write(pdata
, INT_EN
, temp
);
1789 smsc911x_reg_write(pdata
, INT_STS
, INT_STS_SW_INT_
);
1790 pdata
->software_irq_signal
= 1;
1792 serviced
= IRQ_HANDLED
;
1795 if (unlikely(intsts
& inten
& INT_STS_RXSTOP_INT_
)) {
1796 /* Called when there is a multicast update scheduled and
1797 * it is now safe to complete the update */
1798 SMSC_TRACE(pdata
, intr
, "RX Stop interrupt");
1799 smsc911x_reg_write(pdata
, INT_STS
, INT_STS_RXSTOP_INT_
);
1800 if (pdata
->multicast_update_pending
)
1801 smsc911x_rx_multicast_update_workaround(pdata
);
1802 serviced
= IRQ_HANDLED
;
1805 if (intsts
& inten
& INT_STS_TDFA_
) {
1806 temp
= smsc911x_reg_read(pdata
, FIFO_INT
);
1807 temp
|= FIFO_INT_TX_AVAIL_LEVEL_
;
1808 smsc911x_reg_write(pdata
, FIFO_INT
, temp
);
1809 smsc911x_reg_write(pdata
, INT_STS
, INT_STS_TDFA_
);
1810 netif_wake_queue(dev
);
1811 serviced
= IRQ_HANDLED
;
1814 if (unlikely(intsts
& inten
& INT_STS_RXE_
)) {
1815 SMSC_TRACE(pdata
, intr
, "RX Error interrupt");
1816 smsc911x_reg_write(pdata
, INT_STS
, INT_STS_RXE_
);
1817 serviced
= IRQ_HANDLED
;
1820 if (likely(intsts
& inten
& INT_STS_RSFL_
)) {
1821 if (likely(napi_schedule_prep(&pdata
->napi
))) {
1822 /* Disable Rx interrupts */
1823 temp
= smsc911x_reg_read(pdata
, INT_EN
);
1824 temp
&= (~INT_EN_RSFL_EN_
);
1825 smsc911x_reg_write(pdata
, INT_EN
, temp
);
1826 /* Schedule a NAPI poll */
1827 __napi_schedule(&pdata
->napi
);
1829 SMSC_WARN(pdata
, rx_err
, "napi_schedule_prep failed");
1831 serviced
= IRQ_HANDLED
;
1837 #ifdef CONFIG_NET_POLL_CONTROLLER
1838 static void smsc911x_poll_controller(struct net_device
*dev
)
1840 disable_irq(dev
->irq
);
1841 smsc911x_irqhandler(0, dev
);
1842 enable_irq(dev
->irq
);
1844 #endif /* CONFIG_NET_POLL_CONTROLLER */
1846 static int smsc911x_set_mac_address(struct net_device
*dev
, void *p
)
1848 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1849 struct sockaddr
*addr
= p
;
1851 /* On older hardware revisions we cannot change the mac address
1852 * registers while receiving data. Newer devices can safely change
1853 * this at any time. */
1854 if (pdata
->generation
<= 1 && netif_running(dev
))
1857 if (!is_valid_ether_addr(addr
->sa_data
))
1858 return -EADDRNOTAVAIL
;
1860 memcpy(dev
->dev_addr
, addr
->sa_data
, ETH_ALEN
);
1862 spin_lock_irq(&pdata
->mac_lock
);
1863 smsc911x_set_hw_mac_address(pdata
, dev
->dev_addr
);
1864 spin_unlock_irq(&pdata
->mac_lock
);
1866 netdev_info(dev
, "MAC Address: %pM\n", dev
->dev_addr
);
1871 /* Standard ioctls for mii-tool */
1872 static int smsc911x_do_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
1874 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1876 if (!netif_running(dev
) || !pdata
->phy_dev
)
1879 return phy_mii_ioctl(pdata
->phy_dev
, ifr
, cmd
);
1883 smsc911x_ethtool_getsettings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
1885 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1889 return phy_ethtool_gset(pdata
->phy_dev
, cmd
);
1893 smsc911x_ethtool_setsettings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
1895 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1897 return phy_ethtool_sset(pdata
->phy_dev
, cmd
);
1900 static void smsc911x_ethtool_getdrvinfo(struct net_device
*dev
,
1901 struct ethtool_drvinfo
*info
)
1903 strlcpy(info
->driver
, SMSC_CHIPNAME
, sizeof(info
->driver
));
1904 strlcpy(info
->version
, SMSC_DRV_VERSION
, sizeof(info
->version
));
1905 strlcpy(info
->bus_info
, dev_name(dev
->dev
.parent
),
1906 sizeof(info
->bus_info
));
1909 static int smsc911x_ethtool_nwayreset(struct net_device
*dev
)
1911 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1913 return phy_start_aneg(pdata
->phy_dev
);
1916 static u32
smsc911x_ethtool_getmsglevel(struct net_device
*dev
)
1918 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1919 return pdata
->msg_enable
;
1922 static void smsc911x_ethtool_setmsglevel(struct net_device
*dev
, u32 level
)
1924 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1925 pdata
->msg_enable
= level
;
1928 static int smsc911x_ethtool_getregslen(struct net_device
*dev
)
1930 return (((E2P_DATA
- ID_REV
) / 4 + 1) + (WUCSR
- MAC_CR
) + 1 + 32) *
1935 smsc911x_ethtool_getregs(struct net_device
*dev
, struct ethtool_regs
*regs
,
1938 struct smsc911x_data
*pdata
= netdev_priv(dev
);
1939 struct phy_device
*phy_dev
= pdata
->phy_dev
;
1940 unsigned long flags
;
1945 regs
->version
= pdata
->idrev
;
1946 for (i
= ID_REV
; i
<= E2P_DATA
; i
+= (sizeof(u32
)))
1947 data
[j
++] = smsc911x_reg_read(pdata
, i
);
1949 for (i
= MAC_CR
; i
<= WUCSR
; i
++) {
1950 spin_lock_irqsave(&pdata
->mac_lock
, flags
);
1951 data
[j
++] = smsc911x_mac_read(pdata
, i
);
1952 spin_unlock_irqrestore(&pdata
->mac_lock
, flags
);
1955 for (i
= 0; i
<= 31; i
++)
1956 data
[j
++] = smsc911x_mii_read(phy_dev
->bus
, phy_dev
->addr
, i
);
1959 static void smsc911x_eeprom_enable_access(struct smsc911x_data
*pdata
)
1961 unsigned int temp
= smsc911x_reg_read(pdata
, GPIO_CFG
);
1962 temp
&= ~GPIO_CFG_EEPR_EN_
;
1963 smsc911x_reg_write(pdata
, GPIO_CFG
, temp
);
1967 static int smsc911x_eeprom_send_cmd(struct smsc911x_data
*pdata
, u32 op
)
1972 SMSC_TRACE(pdata
, drv
, "op 0x%08x", op
);
1973 if (smsc911x_reg_read(pdata
, E2P_CMD
) & E2P_CMD_EPC_BUSY_
) {
1974 SMSC_WARN(pdata
, drv
, "Busy at start");
1978 e2cmd
= op
| E2P_CMD_EPC_BUSY_
;
1979 smsc911x_reg_write(pdata
, E2P_CMD
, e2cmd
);
1983 e2cmd
= smsc911x_reg_read(pdata
, E2P_CMD
);
1984 } while ((e2cmd
& E2P_CMD_EPC_BUSY_
) && (--timeout
));
1987 SMSC_TRACE(pdata
, drv
, "TIMED OUT");
1991 if (e2cmd
& E2P_CMD_EPC_TIMEOUT_
) {
1992 SMSC_TRACE(pdata
, drv
, "Error occurred during eeprom operation");
1999 static int smsc911x_eeprom_read_location(struct smsc911x_data
*pdata
,
2000 u8 address
, u8
*data
)
2002 u32 op
= E2P_CMD_EPC_CMD_READ_
| address
;
2005 SMSC_TRACE(pdata
, drv
, "address 0x%x", address
);
2006 ret
= smsc911x_eeprom_send_cmd(pdata
, op
);
2009 data
[address
] = smsc911x_reg_read(pdata
, E2P_DATA
);
2014 static int smsc911x_eeprom_write_location(struct smsc911x_data
*pdata
,
2015 u8 address
, u8 data
)
2017 u32 op
= E2P_CMD_EPC_CMD_ERASE_
| address
;
2021 SMSC_TRACE(pdata
, drv
, "address 0x%x, data 0x%x", address
, data
);
2022 ret
= smsc911x_eeprom_send_cmd(pdata
, op
);
2025 op
= E2P_CMD_EPC_CMD_WRITE_
| address
;
2026 smsc911x_reg_write(pdata
, E2P_DATA
, (u32
)data
);
2028 /* Workaround for hardware read-after-write restriction */
2029 temp
= smsc911x_reg_read(pdata
, BYTE_TEST
);
2031 ret
= smsc911x_eeprom_send_cmd(pdata
, op
);
2037 static int smsc911x_ethtool_get_eeprom_len(struct net_device
*dev
)
2039 return SMSC911X_EEPROM_SIZE
;
2042 static int smsc911x_ethtool_get_eeprom(struct net_device
*dev
,
2043 struct ethtool_eeprom
*eeprom
, u8
*data
)
2045 struct smsc911x_data
*pdata
= netdev_priv(dev
);
2046 u8 eeprom_data
[SMSC911X_EEPROM_SIZE
];
2050 smsc911x_eeprom_enable_access(pdata
);
2052 len
= min(eeprom
->len
, SMSC911X_EEPROM_SIZE
);
2053 for (i
= 0; i
< len
; i
++) {
2054 int ret
= smsc911x_eeprom_read_location(pdata
, i
, eeprom_data
);
2061 memcpy(data
, &eeprom_data
[eeprom
->offset
], len
);
2066 static int smsc911x_ethtool_set_eeprom(struct net_device
*dev
,
2067 struct ethtool_eeprom
*eeprom
, u8
*data
)
2070 struct smsc911x_data
*pdata
= netdev_priv(dev
);
2072 smsc911x_eeprom_enable_access(pdata
);
2073 smsc911x_eeprom_send_cmd(pdata
, E2P_CMD_EPC_CMD_EWEN_
);
2074 ret
= smsc911x_eeprom_write_location(pdata
, eeprom
->offset
, *data
);
2075 smsc911x_eeprom_send_cmd(pdata
, E2P_CMD_EPC_CMD_EWDS_
);
2077 /* Single byte write, according to man page */
2083 static const struct ethtool_ops smsc911x_ethtool_ops
= {
2084 .get_settings
= smsc911x_ethtool_getsettings
,
2085 .set_settings
= smsc911x_ethtool_setsettings
,
2086 .get_link
= ethtool_op_get_link
,
2087 .get_drvinfo
= smsc911x_ethtool_getdrvinfo
,
2088 .nway_reset
= smsc911x_ethtool_nwayreset
,
2089 .get_msglevel
= smsc911x_ethtool_getmsglevel
,
2090 .set_msglevel
= smsc911x_ethtool_setmsglevel
,
2091 .get_regs_len
= smsc911x_ethtool_getregslen
,
2092 .get_regs
= smsc911x_ethtool_getregs
,
2093 .get_eeprom_len
= smsc911x_ethtool_get_eeprom_len
,
2094 .get_eeprom
= smsc911x_ethtool_get_eeprom
,
2095 .set_eeprom
= smsc911x_ethtool_set_eeprom
,
2096 .get_ts_info
= ethtool_op_get_ts_info
,
2099 static const struct net_device_ops smsc911x_netdev_ops
= {
2100 .ndo_open
= smsc911x_open
,
2101 .ndo_stop
= smsc911x_stop
,
2102 .ndo_start_xmit
= smsc911x_hard_start_xmit
,
2103 .ndo_get_stats
= smsc911x_get_stats
,
2104 .ndo_set_rx_mode
= smsc911x_set_multicast_list
,
2105 .ndo_do_ioctl
= smsc911x_do_ioctl
,
2106 .ndo_change_mtu
= eth_change_mtu
,
2107 .ndo_validate_addr
= eth_validate_addr
,
2108 .ndo_set_mac_address
= smsc911x_set_mac_address
,
2109 #ifdef CONFIG_NET_POLL_CONTROLLER
2110 .ndo_poll_controller
= smsc911x_poll_controller
,
2114 /* copies the current mac address from hardware to dev->dev_addr */
2115 static void smsc911x_read_mac_address(struct net_device
*dev
)
2117 struct smsc911x_data
*pdata
= netdev_priv(dev
);
2118 u32 mac_high16
= smsc911x_mac_read(pdata
, ADDRH
);
2119 u32 mac_low32
= smsc911x_mac_read(pdata
, ADDRL
);
2121 dev
->dev_addr
[0] = (u8
)(mac_low32
);
2122 dev
->dev_addr
[1] = (u8
)(mac_low32
>> 8);
2123 dev
->dev_addr
[2] = (u8
)(mac_low32
>> 16);
2124 dev
->dev_addr
[3] = (u8
)(mac_low32
>> 24);
2125 dev
->dev_addr
[4] = (u8
)(mac_high16
);
2126 dev
->dev_addr
[5] = (u8
)(mac_high16
>> 8);
2129 /* Initializing private device structures, only called from probe */
2130 static int smsc911x_init(struct net_device
*dev
)
2132 struct smsc911x_data
*pdata
= netdev_priv(dev
);
2133 unsigned int byte_test
, mask
;
2134 unsigned int to
= 100;
2136 SMSC_TRACE(pdata
, probe
, "Driver Parameters:");
2137 SMSC_TRACE(pdata
, probe
, "LAN base: 0x%08lX",
2138 (unsigned long)pdata
->ioaddr
);
2139 SMSC_TRACE(pdata
, probe
, "IRQ: %d", dev
->irq
);
2140 SMSC_TRACE(pdata
, probe
, "PHY will be autodetected.");
2142 spin_lock_init(&pdata
->dev_lock
);
2143 spin_lock_init(&pdata
->mac_lock
);
2145 if (pdata
->ioaddr
== NULL
) {
2146 SMSC_WARN(pdata
, probe
, "pdata->ioaddr: 0x00000000");
2151 * poll the READY bit in PMT_CTRL. Any other access to the device is
2152 * forbidden while this bit isn't set. Try for 100ms
2154 * Note that this test is done before the WORD_SWAP register is
2155 * programmed. So in some configurations the READY bit is at 16 before
2156 * WORD_SWAP is written to. This issue is worked around by waiting
2157 * until either bit 0 or bit 16 gets set in PMT_CTRL.
2159 * SMSC has confirmed that checking bit 16 (marked as reserved in
2160 * the datasheet) is fine since these bits "will either never be set
2161 * or can only go high after READY does (so also indicate the device
2165 mask
= PMT_CTRL_READY_
| swahw32(PMT_CTRL_READY_
);
2166 while (!(smsc911x_reg_read(pdata
, PMT_CTRL
) & mask
) && --to
)
2170 pr_err("Device not READY in 100ms aborting\n");
2174 /* Check byte ordering */
2175 byte_test
= smsc911x_reg_read(pdata
, BYTE_TEST
);
2176 SMSC_TRACE(pdata
, probe
, "BYTE_TEST: 0x%08X", byte_test
);
2177 if (byte_test
== 0x43218765) {
2178 SMSC_TRACE(pdata
, probe
, "BYTE_TEST looks swapped, "
2179 "applying WORD_SWAP");
2180 smsc911x_reg_write(pdata
, WORD_SWAP
, 0xffffffff);
2182 /* 1 dummy read of BYTE_TEST is needed after a write to
2183 * WORD_SWAP before its contents are valid */
2184 byte_test
= smsc911x_reg_read(pdata
, BYTE_TEST
);
2186 byte_test
= smsc911x_reg_read(pdata
, BYTE_TEST
);
2189 if (byte_test
!= 0x87654321) {
2190 SMSC_WARN(pdata
, drv
, "BYTE_TEST: 0x%08X", byte_test
);
2191 if (((byte_test
>> 16) & 0xFFFF) == (byte_test
& 0xFFFF)) {
2192 SMSC_WARN(pdata
, probe
,
2193 "top 16 bits equal to bottom 16 bits");
2194 SMSC_TRACE(pdata
, probe
,
2195 "This may mean the chip is set "
2196 "for 32 bit while the bus is reading 16 bit");
2201 /* Default generation to zero (all workarounds apply) */
2202 pdata
->generation
= 0;
2204 pdata
->idrev
= smsc911x_reg_read(pdata
, ID_REV
);
2205 switch (pdata
->idrev
& 0xFFFF0000) {
2211 /* LAN911[5678] family */
2212 pdata
->generation
= pdata
->idrev
& 0x0000FFFF;
2219 /* LAN921[5678] family */
2220 pdata
->generation
= 3;
2227 /* LAN9210/LAN9211/LAN9220/LAN9221 */
2228 pdata
->generation
= 4;
2232 SMSC_WARN(pdata
, probe
, "LAN911x not identified, idrev: 0x%08X",
2237 SMSC_TRACE(pdata
, probe
,
2238 "LAN911x identified, idrev: 0x%08X, generation: %d",
2239 pdata
->idrev
, pdata
->generation
);
2241 if (pdata
->generation
== 0)
2242 SMSC_WARN(pdata
, probe
,
2243 "This driver is not intended for this chip revision");
2245 /* workaround for platforms without an eeprom, where the mac address
2246 * is stored elsewhere and set by the bootloader. This saves the
2247 * mac address before resetting the device */
2248 if (pdata
->config
.flags
& SMSC911X_SAVE_MAC_ADDRESS
) {
2249 spin_lock_irq(&pdata
->mac_lock
);
2250 smsc911x_read_mac_address(dev
);
2251 spin_unlock_irq(&pdata
->mac_lock
);
2254 /* Reset the LAN911x */
2255 if (smsc911x_soft_reset(pdata
))
2259 dev
->flags
|= IFF_MULTICAST
;
2260 netif_napi_add(dev
, &pdata
->napi
, smsc911x_poll
, SMSC_NAPI_WEIGHT
);
2261 dev
->netdev_ops
= &smsc911x_netdev_ops
;
2262 dev
->ethtool_ops
= &smsc911x_ethtool_ops
;
2267 static int smsc911x_drv_remove(struct platform_device
*pdev
)
2269 struct net_device
*dev
;
2270 struct smsc911x_data
*pdata
;
2271 struct resource
*res
;
2273 dev
= platform_get_drvdata(pdev
);
2275 pdata
= netdev_priv(dev
);
2277 BUG_ON(!pdata
->ioaddr
);
2278 BUG_ON(!pdata
->phy_dev
);
2280 SMSC_TRACE(pdata
, ifdown
, "Stopping driver");
2282 phy_disconnect(pdata
->phy_dev
);
2283 pdata
->phy_dev
= NULL
;
2284 mdiobus_unregister(pdata
->mii_bus
);
2285 mdiobus_free(pdata
->mii_bus
);
2287 platform_set_drvdata(pdev
, NULL
);
2288 unregister_netdev(dev
);
2289 free_irq(dev
->irq
, dev
);
2290 res
= platform_get_resource_byname(pdev
, IORESOURCE_MEM
,
2293 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
2295 release_mem_region(res
->start
, resource_size(res
));
2297 iounmap(pdata
->ioaddr
);
2299 (void)smsc911x_disable_resources(pdev
);
2300 smsc911x_free_resources(pdev
);
2307 /* standard register acces */
2308 static const struct smsc911x_ops standard_smsc911x_ops
= {
2309 .reg_read
= __smsc911x_reg_read
,
2310 .reg_write
= __smsc911x_reg_write
,
2311 .rx_readfifo
= smsc911x_rx_readfifo
,
2312 .tx_writefifo
= smsc911x_tx_writefifo
,
2315 /* shifted register access */
2316 static const struct smsc911x_ops shifted_smsc911x_ops
= {
2317 .reg_read
= __smsc911x_reg_read_shift
,
2318 .reg_write
= __smsc911x_reg_write_shift
,
2319 .rx_readfifo
= smsc911x_rx_readfifo_shift
,
2320 .tx_writefifo
= smsc911x_tx_writefifo_shift
,
2324 static int smsc911x_probe_config_dt(struct smsc911x_platform_config
*config
,
2325 struct device_node
*np
)
2333 config
->phy_interface
= of_get_phy_mode(np
);
2335 mac
= of_get_mac_address(np
);
2337 memcpy(config
->mac
, mac
, ETH_ALEN
);
2339 of_property_read_u32(np
, "reg-shift", &config
->shift
);
2341 of_property_read_u32(np
, "reg-io-width", &width
);
2343 config
->flags
|= SMSC911X_USE_32BIT
;
2345 config
->flags
|= SMSC911X_USE_16BIT
;
2347 if (of_get_property(np
, "smsc,irq-active-high", NULL
))
2348 config
->irq_polarity
= SMSC911X_IRQ_POLARITY_ACTIVE_HIGH
;
2350 if (of_get_property(np
, "smsc,irq-push-pull", NULL
))
2351 config
->irq_type
= SMSC911X_IRQ_TYPE_PUSH_PULL
;
2353 if (of_get_property(np
, "smsc,force-internal-phy", NULL
))
2354 config
->flags
|= SMSC911X_FORCE_INTERNAL_PHY
;
2356 if (of_get_property(np
, "smsc,force-external-phy", NULL
))
2357 config
->flags
|= SMSC911X_FORCE_EXTERNAL_PHY
;
2359 if (of_get_property(np
, "smsc,save-mac-address", NULL
))
2360 config
->flags
|= SMSC911X_SAVE_MAC_ADDRESS
;
2365 static inline int smsc911x_probe_config_dt(
2366 struct smsc911x_platform_config
*config
,
2367 struct device_node
*np
)
2371 #endif /* CONFIG_OF */
2373 static int smsc911x_drv_probe(struct platform_device
*pdev
)
2375 struct device_node
*np
= pdev
->dev
.of_node
;
2376 struct net_device
*dev
;
2377 struct smsc911x_data
*pdata
;
2378 struct smsc911x_platform_config
*config
= pdev
->dev
.platform_data
;
2379 struct resource
*res
, *irq_res
;
2380 unsigned int intcfg
= 0;
2381 int res_size
, irq_flags
;
2384 pr_info("Driver version %s\n", SMSC_DRV_VERSION
);
2386 res
= platform_get_resource_byname(pdev
, IORESOURCE_MEM
,
2389 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
2391 pr_warn("Could not allocate resource\n");
2395 res_size
= resource_size(res
);
2397 irq_res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, 0);
2399 pr_warn("Could not allocate irq resource\n");
2404 if (!request_mem_region(res
->start
, res_size
, SMSC_CHIPNAME
)) {
2409 dev
= alloc_etherdev(sizeof(struct smsc911x_data
));
2412 goto out_release_io_1
;
2415 SET_NETDEV_DEV(dev
, &pdev
->dev
);
2417 pdata
= netdev_priv(dev
);
2418 dev
->irq
= irq_res
->start
;
2419 irq_flags
= irq_res
->flags
& IRQF_TRIGGER_MASK
;
2420 pdata
->ioaddr
= ioremap_nocache(res
->start
, res_size
);
2423 pdata
->msg_enable
= ((1 << debug
) - 1);
2425 platform_set_drvdata(pdev
, dev
);
2427 retval
= smsc911x_request_resources(pdev
);
2429 goto out_request_resources_fail
;
2431 retval
= smsc911x_enable_resources(pdev
);
2433 goto out_enable_resources_fail
;
2435 if (pdata
->ioaddr
== NULL
) {
2436 SMSC_WARN(pdata
, probe
, "Error smsc911x base address invalid");
2438 goto out_disable_resources
;
2441 retval
= smsc911x_probe_config_dt(&pdata
->config
, np
);
2442 if (retval
&& config
) {
2443 /* copy config parameters across to pdata */
2444 memcpy(&pdata
->config
, config
, sizeof(pdata
->config
));
2449 SMSC_WARN(pdata
, probe
, "Error smsc911x config not found");
2450 goto out_disable_resources
;
2453 /* assume standard, non-shifted, access to HW registers */
2454 pdata
->ops
= &standard_smsc911x_ops
;
2455 /* apply the right access if shifting is needed */
2456 if (pdata
->config
.shift
)
2457 pdata
->ops
= &shifted_smsc911x_ops
;
2459 retval
= smsc911x_init(dev
);
2461 goto out_disable_resources
;
2463 /* configure irq polarity and type before connecting isr */
2464 if (pdata
->config
.irq_polarity
== SMSC911X_IRQ_POLARITY_ACTIVE_HIGH
)
2465 intcfg
|= INT_CFG_IRQ_POL_
;
2467 if (pdata
->config
.irq_type
== SMSC911X_IRQ_TYPE_PUSH_PULL
)
2468 intcfg
|= INT_CFG_IRQ_TYPE_
;
2470 smsc911x_reg_write(pdata
, INT_CFG
, intcfg
);
2472 /* Ensure interrupts are globally disabled before connecting ISR */
2473 smsc911x_disable_irq_chip(dev
);
2475 retval
= request_irq(dev
->irq
, smsc911x_irqhandler
,
2476 irq_flags
| IRQF_SHARED
, dev
->name
, dev
);
2478 SMSC_WARN(pdata
, probe
,
2479 "Unable to claim requested irq: %d", dev
->irq
);
2480 goto out_disable_resources
;
2483 retval
= register_netdev(dev
);
2485 SMSC_WARN(pdata
, probe
, "Error %i registering device", retval
);
2488 SMSC_TRACE(pdata
, probe
,
2489 "Network interface: \"%s\"", dev
->name
);
2492 retval
= smsc911x_mii_init(pdev
, dev
);
2494 SMSC_WARN(pdata
, probe
, "Error %i initialising mii", retval
);
2495 goto out_unregister_netdev_5
;
2498 spin_lock_irq(&pdata
->mac_lock
);
2500 /* Check if mac address has been specified when bringing interface up */
2501 if (is_valid_ether_addr(dev
->dev_addr
)) {
2502 smsc911x_set_hw_mac_address(pdata
, dev
->dev_addr
);
2503 SMSC_TRACE(pdata
, probe
,
2504 "MAC Address is specified by configuration");
2505 } else if (is_valid_ether_addr(pdata
->config
.mac
)) {
2506 memcpy(dev
->dev_addr
, pdata
->config
.mac
, 6);
2507 SMSC_TRACE(pdata
, probe
,
2508 "MAC Address specified by platform data");
2510 /* Try reading mac address from device. if EEPROM is present
2511 * it will already have been set */
2514 if (is_valid_ether_addr(dev
->dev_addr
)) {
2515 /* eeprom values are valid so use them */
2516 SMSC_TRACE(pdata
, probe
,
2517 "Mac Address is read from LAN911x EEPROM");
2519 /* eeprom values are invalid, generate random MAC */
2520 eth_hw_addr_random(dev
);
2521 smsc911x_set_hw_mac_address(pdata
, dev
->dev_addr
);
2522 SMSC_TRACE(pdata
, probe
,
2523 "MAC Address is set to eth_random_addr");
2527 spin_unlock_irq(&pdata
->mac_lock
);
2529 netdev_info(dev
, "MAC Address: %pM\n", dev
->dev_addr
);
2533 out_unregister_netdev_5
:
2534 unregister_netdev(dev
);
2536 free_irq(dev
->irq
, dev
);
2537 out_disable_resources
:
2538 (void)smsc911x_disable_resources(pdev
);
2539 out_enable_resources_fail
:
2540 smsc911x_free_resources(pdev
);
2541 out_request_resources_fail
:
2542 platform_set_drvdata(pdev
, NULL
);
2543 iounmap(pdata
->ioaddr
);
2546 release_mem_region(res
->start
, resource_size(res
));
2552 /* This implementation assumes the devices remains powered on its VDDVARIO
2553 * pins during suspend. */
2555 /* TODO: implement freeze/thaw callbacks for hibernation.*/
2557 static int smsc911x_suspend(struct device
*dev
)
2559 struct net_device
*ndev
= dev_get_drvdata(dev
);
2560 struct smsc911x_data
*pdata
= netdev_priv(ndev
);
2562 /* enable wake on LAN, energy detection and the external PME
2564 smsc911x_reg_write(pdata
, PMT_CTRL
,
2565 PMT_CTRL_PM_MODE_D1_
| PMT_CTRL_WOL_EN_
|
2566 PMT_CTRL_ED_EN_
| PMT_CTRL_PME_EN_
);
2571 static int smsc911x_resume(struct device
*dev
)
2573 struct net_device
*ndev
= dev_get_drvdata(dev
);
2574 struct smsc911x_data
*pdata
= netdev_priv(ndev
);
2575 unsigned int to
= 100;
2577 /* Note 3.11 from the datasheet:
2578 * "When the LAN9220 is in a power saving state, a write of any
2579 * data to the BYTE_TEST register will wake-up the device."
2581 smsc911x_reg_write(pdata
, BYTE_TEST
, 0);
2583 /* poll the READY bit in PMT_CTRL. Any other access to the device is
2584 * forbidden while this bit isn't set. Try for 100ms and return -EIO
2586 while (!(smsc911x_reg_read(pdata
, PMT_CTRL
) & PMT_CTRL_READY_
) && --to
)
2589 return (to
== 0) ? -EIO
: 0;
2592 static const struct dev_pm_ops smsc911x_pm_ops
= {
2593 .suspend
= smsc911x_suspend
,
2594 .resume
= smsc911x_resume
,
2597 #define SMSC911X_PM_OPS (&smsc911x_pm_ops)
2600 #define SMSC911X_PM_OPS NULL
2604 static const struct of_device_id smsc911x_dt_ids
[] = {
2605 { .compatible
= "smsc,lan9115", },
2608 MODULE_DEVICE_TABLE(of
, smsc911x_dt_ids
);
2611 static struct platform_driver smsc911x_driver
= {
2612 .probe
= smsc911x_drv_probe
,
2613 .remove
= smsc911x_drv_remove
,
2615 .name
= SMSC_CHIPNAME
,
2616 .owner
= THIS_MODULE
,
2617 .pm
= SMSC911X_PM_OPS
,
2618 .of_match_table
= of_match_ptr(smsc911x_dt_ids
),
2622 /* Entry point for loading the module */
2623 static int __init
smsc911x_init_module(void)
2626 return platform_driver_register(&smsc911x_driver
);
2629 /* entry point for unloading the module */
2630 static void __exit
smsc911x_cleanup_module(void)
2632 platform_driver_unregister(&smsc911x_driver
);
2635 module_init(smsc911x_init_module
);
2636 module_exit(smsc911x_cleanup_module
);