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Sascha Hauerde1b6862008-04-15 00:08:20 -04001/*
2 * SMSC LAN9[12]1[567] Network driver
3 *
Stelian Popcce9cfd2008-05-08 22:52:09 +02004 * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
Sascha Hauerde1b6862008-04-15 00:08:20 -04005 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02006 * SPDX-License-Identifier: GPL-2.0+
Sascha Hauerde1b6862008-04-15 00:08:20 -04007 */
8
9#include <common.h>
Sascha Hauerde1b6862008-04-15 00:08:20 -040010#include <command.h>
Ben Warren736fead2009-07-20 22:01:11 -070011#include <malloc.h>
Sascha Hauerde1b6862008-04-15 00:08:20 -040012#include <net.h>
13#include <miiphy.h>
14
Mike Frysinger75ba6d62009-02-23 10:29:47 -050015#include "smc911x.h"
Sascha Hauerde1b6862008-04-15 00:08:20 -040016
Ben Warren736fead2009-07-20 22:01:11 -070017u32 pkt_data_pull(struct eth_device *dev, u32 addr) \
Stefan Roese890a02e2008-11-12 13:31:02 +010018 __attribute__ ((weak, alias ("smc911x_reg_read")));
Ben Warren736fead2009-07-20 22:01:11 -070019void pkt_data_push(struct eth_device *dev, u32 addr, u32 val) \
Stefan Roese890a02e2008-11-12 13:31:02 +010020 __attribute__ ((weak, alias ("smc911x_reg_write")));
Nobuhiro Iwamatsu33314472008-08-28 13:40:44 +090021
Mike Rapoport45b6b652009-11-11 10:03:09 +020022static void smc911x_handle_mac_address(struct eth_device *dev)
Sascha Hauerde1b6862008-04-15 00:08:20 -040023{
24 unsigned long addrh, addrl;
Ben Warren736fead2009-07-20 22:01:11 -070025 uchar *m = dev->enetaddr;
Sascha Hauerde1b6862008-04-15 00:08:20 -040026
Ben Warren736fead2009-07-20 22:01:11 -070027 addrl = m[0] | (m[1] << 8) | (m[2] << 16) | (m[3] << 24);
28 addrh = m[4] | (m[5] << 8);
29 smc911x_set_mac_csr(dev, ADDRL, addrl);
30 smc911x_set_mac_csr(dev, ADDRH, addrh);
Sascha Hauerde1b6862008-04-15 00:08:20 -040031
Mike Frysinger03f3d8d2009-02-11 19:09:54 -050032 printf(DRIVERNAME ": MAC %pM\n", m);
Ben Warren736fead2009-07-20 22:01:11 -070033}
34
Helmut Raiger6af1d412011-06-29 00:12:14 +000035static int smc911x_eth_phy_read(struct eth_device *dev,
Ben Warren736fead2009-07-20 22:01:11 -070036 u8 phy, u8 reg, u16 *val)
37{
38 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
39 ;
40
41 smc911x_set_mac_csr(dev, MII_ACC, phy << 11 | reg << 6 |
42 MII_ACC_MII_BUSY);
43
44 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
45 ;
46
47 *val = smc911x_get_mac_csr(dev, MII_DATA);
Sascha Hauerde1b6862008-04-15 00:08:20 -040048
49 return 0;
50}
51
Helmut Raiger6af1d412011-06-29 00:12:14 +000052static int smc911x_eth_phy_write(struct eth_device *dev,
Ben Warren736fead2009-07-20 22:01:11 -070053 u8 phy, u8 reg, u16 val)
Sascha Hauerde1b6862008-04-15 00:08:20 -040054{
Ben Warren736fead2009-07-20 22:01:11 -070055 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
Guennadi Liakhovetski3e0f3312008-04-29 12:35:08 +000056 ;
Sascha Hauerde1b6862008-04-15 00:08:20 -040057
Ben Warren736fead2009-07-20 22:01:11 -070058 smc911x_set_mac_csr(dev, MII_DATA, val);
59 smc911x_set_mac_csr(dev, MII_ACC,
Sascha Hauerde1b6862008-04-15 00:08:20 -040060 phy << 11 | reg << 6 | MII_ACC_MII_BUSY | MII_ACC_MII_WRITE);
61
Ben Warren736fead2009-07-20 22:01:11 -070062 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
Guennadi Liakhovetski3e0f3312008-04-29 12:35:08 +000063 ;
Sascha Hauerde1b6862008-04-15 00:08:20 -040064 return 0;
65}
66
Ben Warren736fead2009-07-20 22:01:11 -070067static int smc911x_phy_reset(struct eth_device *dev)
Sascha Hauerde1b6862008-04-15 00:08:20 -040068{
69 u32 reg;
70
Ben Warren736fead2009-07-20 22:01:11 -070071 reg = smc911x_reg_read(dev, PMT_CTRL);
Sascha Hauerde1b6862008-04-15 00:08:20 -040072 reg &= ~0xfffff030;
73 reg |= PMT_CTRL_PHY_RST;
Ben Warren736fead2009-07-20 22:01:11 -070074 smc911x_reg_write(dev, PMT_CTRL, reg);
Sascha Hauerde1b6862008-04-15 00:08:20 -040075
76 mdelay(100);
77
78 return 0;
79}
80
Ben Warren736fead2009-07-20 22:01:11 -070081static void smc911x_phy_configure(struct eth_device *dev)
Sascha Hauerde1b6862008-04-15 00:08:20 -040082{
83 int timeout;
84 u16 status;
85
Ben Warren736fead2009-07-20 22:01:11 -070086 smc911x_phy_reset(dev);
Sascha Hauerde1b6862008-04-15 00:08:20 -040087
Helmut Raiger6af1d412011-06-29 00:12:14 +000088 smc911x_eth_phy_write(dev, 1, MII_BMCR, BMCR_RESET);
Sascha Hauerde1b6862008-04-15 00:08:20 -040089 mdelay(1);
Helmut Raiger6af1d412011-06-29 00:12:14 +000090 smc911x_eth_phy_write(dev, 1, MII_ADVERTISE, 0x01e1);
91 smc911x_eth_phy_write(dev, 1, MII_BMCR, BMCR_ANENABLE |
Mike Frysinger8ef583a2010-12-23 15:40:12 -050092 BMCR_ANRESTART);
Sascha Hauerde1b6862008-04-15 00:08:20 -040093
94 timeout = 5000;
95 do {
96 mdelay(1);
97 if ((timeout--) == 0)
98 goto err_out;
99
Helmut Raiger6af1d412011-06-29 00:12:14 +0000100 if (smc911x_eth_phy_read(dev, 1, MII_BMSR, &status) != 0)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400101 goto err_out;
Mike Frysinger8ef583a2010-12-23 15:40:12 -0500102 } while (!(status & BMSR_LSTATUS));
Sascha Hauerde1b6862008-04-15 00:08:20 -0400103
104 printf(DRIVERNAME ": phy initialized\n");
105
106 return;
107
108err_out:
109 printf(DRIVERNAME ": autonegotiation timed out\n");
110}
111
Ben Warren736fead2009-07-20 22:01:11 -0700112static void smc911x_enable(struct eth_device *dev)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400113{
114 /* Enable TX */
Ben Warren736fead2009-07-20 22:01:11 -0700115 smc911x_reg_write(dev, HW_CFG, 8 << 16 | HW_CFG_SF);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400116
Ben Warren736fead2009-07-20 22:01:11 -0700117 smc911x_reg_write(dev, GPT_CFG, GPT_CFG_TIMER_EN | 10000);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400118
Ben Warren736fead2009-07-20 22:01:11 -0700119 smc911x_reg_write(dev, TX_CFG, TX_CFG_TX_ON);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400120
121 /* no padding to start of packets */
Ben Warren736fead2009-07-20 22:01:11 -0700122 smc911x_reg_write(dev, RX_CFG, 0);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400123
Ben Warren736fead2009-07-20 22:01:11 -0700124 smc911x_set_mac_csr(dev, MAC_CR, MAC_CR_TXEN | MAC_CR_RXEN |
125 MAC_CR_HBDIS);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400126
127}
128
Ben Warren736fead2009-07-20 22:01:11 -0700129static int smc911x_init(struct eth_device *dev, bd_t * bd)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400130{
Olof Johansson2a6cc972009-09-29 10:21:29 -0400131 struct chip_id *id = dev->priv;
Sascha Hauerde1b6862008-04-15 00:08:20 -0400132
Wolfgang Denk49467752009-10-28 00:49:47 +0100133 printf(DRIVERNAME ": detected %s controller\n", id->name);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400134
Ben Warren736fead2009-07-20 22:01:11 -0700135 smc911x_reset(dev);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400136
137 /* Configure the PHY, initialize the link state */
Ben Warren736fead2009-07-20 22:01:11 -0700138 smc911x_phy_configure(dev);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400139
Mike Rapoport45b6b652009-11-11 10:03:09 +0200140 smc911x_handle_mac_address(dev);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400141
142 /* Turn on Tx + Rx */
Ben Warren736fead2009-07-20 22:01:11 -0700143 smc911x_enable(dev);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400144
145 return 0;
Sascha Hauerde1b6862008-04-15 00:08:20 -0400146}
147
Anatolij Gustschinfd89b612012-05-20 12:22:55 +0000148static int smc911x_send(struct eth_device *dev, void *packet, int length)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400149{
150 u32 *data = (u32*)packet;
151 u32 tmplen;
152 u32 status;
153
Ben Warren736fead2009-07-20 22:01:11 -0700154 smc911x_reg_write(dev, TX_DATA_FIFO, TX_CMD_A_INT_FIRST_SEG |
155 TX_CMD_A_INT_LAST_SEG | length);
156 smc911x_reg_write(dev, TX_DATA_FIFO, length);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400157
158 tmplen = (length + 3) / 4;
159
Guennadi Liakhovetski3e0f3312008-04-29 12:35:08 +0000160 while (tmplen--)
Ben Warren736fead2009-07-20 22:01:11 -0700161 pkt_data_push(dev, TX_DATA_FIFO, *data++);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400162
163 /* wait for transmission */
Ben Warren736fead2009-07-20 22:01:11 -0700164 while (!((smc911x_reg_read(dev, TX_FIFO_INF) &
165 TX_FIFO_INF_TSUSED) >> 16));
Sascha Hauerde1b6862008-04-15 00:08:20 -0400166
167 /* get status. Ignore 'no carrier' error, it has no meaning for
168 * full duplex operation
169 */
Ben Warren736fead2009-07-20 22:01:11 -0700170 status = smc911x_reg_read(dev, TX_STATUS_FIFO) &
171 (TX_STS_LOC | TX_STS_LATE_COLL | TX_STS_MANY_COLL |
172 TX_STS_MANY_DEFER | TX_STS_UNDERRUN);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400173
Guennadi Liakhovetski3e0f3312008-04-29 12:35:08 +0000174 if (!status)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400175 return 0;
176
177 printf(DRIVERNAME ": failed to send packet: %s%s%s%s%s\n",
178 status & TX_STS_LOC ? "TX_STS_LOC " : "",
179 status & TX_STS_LATE_COLL ? "TX_STS_LATE_COLL " : "",
180 status & TX_STS_MANY_COLL ? "TX_STS_MANY_COLL " : "",
181 status & TX_STS_MANY_DEFER ? "TX_STS_MANY_DEFER " : "",
182 status & TX_STS_UNDERRUN ? "TX_STS_UNDERRUN" : "");
183
184 return -1;
185}
186
Ben Warren736fead2009-07-20 22:01:11 -0700187static void smc911x_halt(struct eth_device *dev)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400188{
Ben Warren736fead2009-07-20 22:01:11 -0700189 smc911x_reset(dev);
Marek Vasut99dd6ab2014-10-11 18:42:58 +0200190 smc911x_handle_mac_address(dev);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400191}
192
Ben Warren736fead2009-07-20 22:01:11 -0700193static int smc911x_rx(struct eth_device *dev)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400194{
195 u32 *data = (u32 *)NetRxPackets[0];
196 u32 pktlen, tmplen;
197 u32 status;
198
Ben Warren736fead2009-07-20 22:01:11 -0700199 if ((smc911x_reg_read(dev, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED) >> 16) {
200 status = smc911x_reg_read(dev, RX_STATUS_FIFO);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400201 pktlen = (status & RX_STS_PKT_LEN) >> 16;
202
Ben Warren736fead2009-07-20 22:01:11 -0700203 smc911x_reg_write(dev, RX_CFG, 0);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400204
Valentin Yakovenkovbd75db32010-04-23 09:40:23 +0400205 tmplen = (pktlen + 3) / 4;
Guennadi Liakhovetski3e0f3312008-04-29 12:35:08 +0000206 while (tmplen--)
Ben Warren736fead2009-07-20 22:01:11 -0700207 *data++ = pkt_data_pull(dev, RX_DATA_FIFO);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400208
Guennadi Liakhovetski3e0f3312008-04-29 12:35:08 +0000209 if (status & RX_STS_ES)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400210 printf(DRIVERNAME
211 ": dropped bad packet. Status: 0x%08x\n",
212 status);
213 else
214 NetReceive(NetRxPackets[0], pktlen);
215 }
216
217 return 0;
218}
Ben Warren736fead2009-07-20 22:01:11 -0700219
Helmut Raiger6af1d412011-06-29 00:12:14 +0000220#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
221/* wrapper for smc911x_eth_phy_read */
Wolfgang Denk24e16642011-09-08 01:04:27 +0000222static int smc911x_miiphy_read(const char *devname, u8 phy, u8 reg, u16 *val)
Helmut Raiger6af1d412011-06-29 00:12:14 +0000223{
224 struct eth_device *dev = eth_get_dev_by_name(devname);
225 if (dev)
226 return smc911x_eth_phy_read(dev, phy, reg, val);
227 return -1;
228}
229/* wrapper for smc911x_eth_phy_write */
Wolfgang Denk24e16642011-09-08 01:04:27 +0000230static int smc911x_miiphy_write(const char *devname, u8 phy, u8 reg, u16 val)
Helmut Raiger6af1d412011-06-29 00:12:14 +0000231{
232 struct eth_device *dev = eth_get_dev_by_name(devname);
233 if (dev)
234 return smc911x_eth_phy_write(dev, phy, reg, val);
235 return -1;
236}
237#endif
238
Ben Warren736fead2009-07-20 22:01:11 -0700239int smc911x_initialize(u8 dev_num, int base_addr)
240{
241 unsigned long addrl, addrh;
242 struct eth_device *dev;
243
244 dev = malloc(sizeof(*dev));
245 if (!dev) {
Mike Rapoportfbd47b62009-11-12 15:35:08 +0200246 return -1;
Ben Warren736fead2009-07-20 22:01:11 -0700247 }
248 memset(dev, 0, sizeof(*dev));
249
250 dev->iobase = base_addr;
251
Steve Sakoman4bc3d2a2009-10-20 18:21:18 +0200252 /* Try to detect chip. Will fail if not present. */
253 if (smc911x_detect_chip(dev)) {
254 free(dev);
255 return 0;
256 }
257
Ben Warren736fead2009-07-20 22:01:11 -0700258 addrh = smc911x_get_mac_csr(dev, ADDRH);
259 addrl = smc911x_get_mac_csr(dev, ADDRL);
Seunghyeon Rhee76771e52009-11-02 00:00:00 -0800260 if (!(addrl == 0xffffffff && addrh == 0x0000ffff)) {
261 /* address is obtained from optional eeprom */
262 dev->enetaddr[0] = addrl;
263 dev->enetaddr[1] = addrl >> 8;
264 dev->enetaddr[2] = addrl >> 16;
265 dev->enetaddr[3] = addrl >> 24;
266 dev->enetaddr[4] = addrh;
267 dev->enetaddr[5] = addrh >> 8;
268 }
Ben Warren736fead2009-07-20 22:01:11 -0700269
270 dev->init = smc911x_init;
271 dev->halt = smc911x_halt;
272 dev->send = smc911x_send;
273 dev->recv = smc911x_rx;
274 sprintf(dev->name, "%s-%hu", DRIVERNAME, dev_num);
275
276 eth_register(dev);
Helmut Raiger6af1d412011-06-29 00:12:14 +0000277
278#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
279 miiphy_register(dev->name, smc911x_miiphy_read, smc911x_miiphy_write);
280#endif
281
Mike Rapoportfbd47b62009-11-12 15:35:08 +0200282 return 1;
Ben Warren736fead2009-07-20 22:01:11 -0700283}