Jiandong Zheng | c36e42e | 2014-08-01 20:37:16 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 Broadcom Corporation. |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0+ |
| 5 | */ |
| 6 | |
| 7 | #include <common.h> |
| 8 | #include <malloc.h> |
| 9 | #include <net.h> |
| 10 | #include <config.h> |
| 11 | |
| 12 | #include <phy.h> |
| 13 | #include <miiphy.h> |
| 14 | |
| 15 | #include <asm/io.h> |
| 16 | |
| 17 | #include <netdev.h> |
| 18 | #include "bcm-sf2-eth.h" |
| 19 | |
| 20 | #if defined(CONFIG_BCM_SF2_ETH_GMAC) |
| 21 | #include "bcm-sf2-eth-gmac.h" |
| 22 | #else |
| 23 | #error "bcm_sf2_eth: NEED to define a MAC!" |
| 24 | #endif |
| 25 | |
| 26 | #define BCM_NET_MODULE_DESCRIPTION "Broadcom Starfighter2 Ethernet driver" |
| 27 | #define BCM_NET_MODULE_VERSION "0.1" |
| 28 | #define BCM_SF2_ETH_DEV_NAME "bcm_sf2" |
| 29 | |
| 30 | static const char banner[] = |
| 31 | BCM_NET_MODULE_DESCRIPTION " " BCM_NET_MODULE_VERSION "\n"; |
| 32 | |
| 33 | static int bcm_sf2_eth_init(struct eth_device *dev) |
| 34 | { |
| 35 | struct eth_info *eth = (struct eth_info *)(dev->priv); |
| 36 | struct eth_dma *dma = &(eth->dma); |
| 37 | struct phy_device *phydev; |
| 38 | int rc = 0; |
| 39 | int i; |
| 40 | |
| 41 | rc = eth->mac_init(dev); |
| 42 | if (rc) { |
Masahiro Yamada | 81e1042 | 2017-09-16 14:10:41 +0900 | [diff] [blame] | 43 | pr_err("%s: Couldn't cofigure MAC!\n", __func__); |
Jiandong Zheng | c36e42e | 2014-08-01 20:37:16 -0700 | [diff] [blame] | 44 | return rc; |
| 45 | } |
| 46 | |
| 47 | /* disable DMA */ |
| 48 | dma->disable_dma(dma, MAC_DMA_RX); |
| 49 | dma->disable_dma(dma, MAC_DMA_TX); |
| 50 | |
| 51 | eth->port_num = 0; |
| 52 | debug("Connecting PHY 0...\n"); |
| 53 | phydev = phy_connect(miiphy_get_dev_by_name(dev->name), |
| 54 | 0, dev, eth->phy_interface); |
| 55 | if (phydev != NULL) { |
| 56 | eth->port[0] = phydev; |
| 57 | eth->port_num += 1; |
| 58 | } else { |
| 59 | debug("No PHY found for port 0\n"); |
| 60 | } |
| 61 | |
| 62 | for (i = 0; i < eth->port_num; i++) |
| 63 | phy_config(eth->port[i]); |
| 64 | |
| 65 | return rc; |
| 66 | } |
| 67 | |
| 68 | /* |
| 69 | * u-boot net functions |
| 70 | */ |
| 71 | |
| 72 | static int bcm_sf2_eth_send(struct eth_device *dev, void *packet, int length) |
| 73 | { |
| 74 | struct eth_dma *dma = &(((struct eth_info *)(dev->priv))->dma); |
| 75 | uint8_t *buf = (uint8_t *)packet; |
| 76 | int rc = 0; |
| 77 | int i = 0; |
| 78 | |
| 79 | debug("%s enter\n", __func__); |
| 80 | |
| 81 | /* load buf and start transmit */ |
| 82 | rc = dma->tx_packet(dma, buf, length); |
| 83 | if (rc) { |
| 84 | debug("ERROR - Tx failed\n"); |
| 85 | return rc; |
| 86 | } |
| 87 | |
| 88 | while (!(dma->check_tx_done(dma))) { |
| 89 | udelay(100); |
| 90 | debug("."); |
| 91 | i++; |
| 92 | if (i > 20) { |
Masahiro Yamada | 81e1042 | 2017-09-16 14:10:41 +0900 | [diff] [blame] | 93 | pr_err("%s: Tx timeout: retried 20 times\n", __func__); |
Jiandong Zheng | c36e42e | 2014-08-01 20:37:16 -0700 | [diff] [blame] | 94 | rc = -1; |
| 95 | break; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | debug("%s exit rc(0x%x)\n", __func__, rc); |
| 100 | return rc; |
| 101 | } |
| 102 | |
| 103 | static int bcm_sf2_eth_receive(struct eth_device *dev) |
| 104 | { |
| 105 | struct eth_dma *dma = &(((struct eth_info *)(dev->priv))->dma); |
Joe Hershberger | 9f09a36 | 2015-04-08 01:41:06 -0500 | [diff] [blame] | 106 | uint8_t *buf = (uint8_t *)net_rx_packets[0]; |
Jiandong Zheng | c36e42e | 2014-08-01 20:37:16 -0700 | [diff] [blame] | 107 | int rcvlen; |
| 108 | int rc = 0; |
| 109 | int i = 0; |
| 110 | |
| 111 | while (1) { |
| 112 | /* Poll Rx queue to get a packet */ |
| 113 | rcvlen = dma->check_rx_done(dma, buf); |
| 114 | if (rcvlen < 0) { |
| 115 | /* No packet received */ |
| 116 | rc = -1; |
| 117 | debug("\nNO More Rx\n"); |
| 118 | break; |
| 119 | } else if ((rcvlen == 0) || (rcvlen > RX_BUF_SIZE)) { |
Masahiro Yamada | 81e1042 | 2017-09-16 14:10:41 +0900 | [diff] [blame] | 120 | pr_err("%s: Wrong Ethernet packet size (%d B), skip!\n", |
Jiandong Zheng | c36e42e | 2014-08-01 20:37:16 -0700 | [diff] [blame] | 121 | __func__, rcvlen); |
| 122 | break; |
| 123 | } else { |
| 124 | debug("recieved\n"); |
| 125 | |
| 126 | /* Forward received packet to uboot network handler */ |
Joe Hershberger | 9f09a36 | 2015-04-08 01:41:06 -0500 | [diff] [blame] | 127 | net_process_received_packet(buf, rcvlen); |
Jiandong Zheng | c36e42e | 2014-08-01 20:37:16 -0700 | [diff] [blame] | 128 | |
| 129 | if (++i >= PKTBUFSRX) |
| 130 | i = 0; |
Joe Hershberger | 9f09a36 | 2015-04-08 01:41:06 -0500 | [diff] [blame] | 131 | buf = net_rx_packets[i]; |
Jiandong Zheng | c36e42e | 2014-08-01 20:37:16 -0700 | [diff] [blame] | 132 | } |
| 133 | } |
| 134 | |
| 135 | return rc; |
| 136 | } |
| 137 | |
| 138 | static int bcm_sf2_eth_write_hwaddr(struct eth_device *dev) |
| 139 | { |
| 140 | struct eth_info *eth = (struct eth_info *)(dev->priv); |
| 141 | |
| 142 | printf(" ETH MAC: %02x:%02x:%02x:%02x:%02x:%02x\n", |
| 143 | dev->enetaddr[0], dev->enetaddr[1], dev->enetaddr[2], |
| 144 | dev->enetaddr[3], dev->enetaddr[4], dev->enetaddr[5]); |
| 145 | |
| 146 | return eth->set_mac_addr(dev->enetaddr); |
| 147 | } |
| 148 | |
| 149 | static int bcm_sf2_eth_open(struct eth_device *dev, bd_t *bt) |
| 150 | { |
| 151 | struct eth_info *eth = (struct eth_info *)(dev->priv); |
| 152 | struct eth_dma *dma = &(eth->dma); |
| 153 | int i; |
| 154 | |
| 155 | debug("Enabling BCM SF2 Ethernet.\n"); |
| 156 | |
Jiandong Zheng | c36e42e | 2014-08-01 20:37:16 -0700 | [diff] [blame] | 157 | eth->enable_mac(); |
| 158 | |
| 159 | /* enable tx and rx DMA */ |
| 160 | dma->enable_dma(dma, MAC_DMA_RX); |
| 161 | dma->enable_dma(dma, MAC_DMA_TX); |
| 162 | |
| 163 | /* |
| 164 | * Need to start PHY here because link speed can change |
| 165 | * before each ethernet operation |
| 166 | */ |
| 167 | for (i = 0; i < eth->port_num; i++) { |
| 168 | if (phy_startup(eth->port[i])) { |
Masahiro Yamada | 81e1042 | 2017-09-16 14:10:41 +0900 | [diff] [blame] | 169 | pr_err("%s: PHY %d startup failed!\n", __func__, i); |
Jiandong Zheng | c36e42e | 2014-08-01 20:37:16 -0700 | [diff] [blame] | 170 | if (i == CONFIG_BCM_SF2_ETH_DEFAULT_PORT) { |
Masahiro Yamada | 81e1042 | 2017-09-16 14:10:41 +0900 | [diff] [blame] | 171 | pr_err("%s: No default port %d!\n", __func__, i); |
Jiandong Zheng | c36e42e | 2014-08-01 20:37:16 -0700 | [diff] [blame] | 172 | return -1; |
| 173 | } |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | /* Set MAC speed using default port */ |
| 178 | i = CONFIG_BCM_SF2_ETH_DEFAULT_PORT; |
| 179 | debug("PHY %d: speed:%d, duplex:%d, link:%d\n", i, |
| 180 | eth->port[i]->speed, eth->port[i]->duplex, eth->port[i]->link); |
| 181 | eth->set_mac_speed(eth->port[i]->speed, eth->port[i]->duplex); |
| 182 | |
| 183 | debug("Enable Ethernet Done.\n"); |
| 184 | |
| 185 | return 0; |
| 186 | } |
| 187 | |
| 188 | static void bcm_sf2_eth_close(struct eth_device *dev) |
| 189 | { |
| 190 | struct eth_info *eth = (struct eth_info *)(dev->priv); |
| 191 | struct eth_dma *dma = &(eth->dma); |
| 192 | |
| 193 | /* disable DMA */ |
| 194 | dma->disable_dma(dma, MAC_DMA_RX); |
| 195 | dma->disable_dma(dma, MAC_DMA_TX); |
| 196 | |
| 197 | eth->disable_mac(); |
| 198 | } |
| 199 | |
| 200 | int bcm_sf2_eth_register(bd_t *bis, u8 dev_num) |
| 201 | { |
| 202 | struct eth_device *dev; |
| 203 | struct eth_info *eth; |
| 204 | int rc; |
| 205 | |
| 206 | dev = (struct eth_device *)malloc(sizeof(struct eth_device)); |
| 207 | if (dev == NULL) { |
Masahiro Yamada | 81e1042 | 2017-09-16 14:10:41 +0900 | [diff] [blame] | 208 | pr_err("%s: Not enough memory!\n", __func__); |
Jiandong Zheng | c36e42e | 2014-08-01 20:37:16 -0700 | [diff] [blame] | 209 | return -1; |
| 210 | } |
| 211 | |
| 212 | eth = (struct eth_info *)malloc(sizeof(struct eth_info)); |
| 213 | if (eth == NULL) { |
Masahiro Yamada | 81e1042 | 2017-09-16 14:10:41 +0900 | [diff] [blame] | 214 | pr_err("%s: Not enough memory!\n", __func__); |
Jiandong Zheng | c36e42e | 2014-08-01 20:37:16 -0700 | [diff] [blame] | 215 | return -1; |
| 216 | } |
| 217 | |
| 218 | printf(banner); |
| 219 | |
| 220 | memset(dev, 0, sizeof(*dev)); |
| 221 | sprintf(dev->name, "%s_%s-%hu", BCM_SF2_ETH_DEV_NAME, |
| 222 | BCM_SF2_ETH_MAC_NAME, dev_num); |
| 223 | |
| 224 | dev->priv = (void *)eth; |
| 225 | dev->iobase = 0; |
| 226 | |
| 227 | dev->init = bcm_sf2_eth_open; |
| 228 | dev->halt = bcm_sf2_eth_close; |
| 229 | dev->send = bcm_sf2_eth_send; |
| 230 | dev->recv = bcm_sf2_eth_receive; |
| 231 | dev->write_hwaddr = bcm_sf2_eth_write_hwaddr; |
| 232 | |
| 233 | #ifdef CONFIG_BCM_SF2_ETH_GMAC |
| 234 | if (gmac_add(dev)) { |
| 235 | free(eth); |
| 236 | free(dev); |
Masahiro Yamada | 81e1042 | 2017-09-16 14:10:41 +0900 | [diff] [blame] | 237 | pr_err("%s: Adding GMAC failed!\n", __func__); |
Jiandong Zheng | c36e42e | 2014-08-01 20:37:16 -0700 | [diff] [blame] | 238 | return -1; |
| 239 | } |
| 240 | #else |
| 241 | #error "bcm_sf2_eth: NEED to register a MAC!" |
| 242 | #endif |
| 243 | |
| 244 | eth_register(dev); |
| 245 | |
| 246 | #ifdef CONFIG_CMD_MII |
Joe Hershberger | 0c33319 | 2016-08-08 11:28:39 -0500 | [diff] [blame] | 247 | int retval; |
| 248 | struct mii_dev *mdiodev = mdio_alloc(); |
| 249 | |
| 250 | if (!mdiodev) |
| 251 | return -ENOMEM; |
| 252 | strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN); |
| 253 | mdiodev->read = eth->miiphy_read; |
| 254 | mdiodev->write = eth->miiphy_write; |
| 255 | |
| 256 | retval = mdio_register(mdiodev); |
| 257 | if (retval < 0) |
| 258 | return retval; |
Jiandong Zheng | c36e42e | 2014-08-01 20:37:16 -0700 | [diff] [blame] | 259 | #endif |
| 260 | |
| 261 | /* Initialization */ |
| 262 | debug("Ethernet initialization ..."); |
| 263 | |
| 264 | rc = bcm_sf2_eth_init(dev); |
| 265 | if (rc != 0) { |
Masahiro Yamada | 81e1042 | 2017-09-16 14:10:41 +0900 | [diff] [blame] | 266 | pr_err("%s: configuration failed!\n", __func__); |
Jiandong Zheng | c36e42e | 2014-08-01 20:37:16 -0700 | [diff] [blame] | 267 | return -1; |
| 268 | } |
| 269 | |
| 270 | printf("Basic ethernet functionality initialized\n"); |
| 271 | |
| 272 | return 0; |
| 273 | } |