wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 1 | /* Only eth0 supported for now |
| 2 | * |
| 3 | * (C) Copyright 2003 |
| 4 | * Thomas.Lange@corelatus.se |
| 5 | * |
| 6 | * See file CREDITS for list of people who contributed to this |
| 7 | * project. |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU General Public License as |
| 11 | * published by the Free Software Foundation; either version 2 of |
| 12 | * the License, or (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
Wolfgang Denk | 265817c | 2005-09-25 00:53:22 +0200 | [diff] [blame] | 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 22 | * MA 02111-1307 USA |
| 23 | */ |
| 24 | #include <config.h> |
| 25 | |
| 26 | #ifdef CONFIG_AU1X00 |
| 27 | |
Wolfgang Denk | 265817c | 2005-09-25 00:53:22 +0200 | [diff] [blame] | 28 | #if defined(CFG_DISCOVER_PHY) |
| 29 | #error "PHY not supported yet" |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 30 | /* We just assume that we are running 100FD for now */ |
| 31 | /* We all use switches, right? ;-) */ |
| 32 | #endif |
| 33 | |
wdenk | a2663ea | 2003-12-07 18:32:37 +0000 | [diff] [blame] | 34 | /* I assume ethernet behaves like au1000 */ |
| 35 | |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 36 | #ifdef CONFIG_AU1000 |
| 37 | /* Base address differ between cpu:s */ |
| 38 | #define ETH0_BASE AU1000_ETH0_BASE |
| 39 | #define MAC0_ENABLE AU1000_MAC0_ENABLE |
| 40 | #else |
wdenk | a2663ea | 2003-12-07 18:32:37 +0000 | [diff] [blame] | 41 | #ifdef CONFIG_AU1100 |
| 42 | #define ETH0_BASE AU1100_ETH0_BASE |
| 43 | #define MAC0_ENABLE AU1100_MAC0_ENABLE |
| 44 | #else |
| 45 | #ifdef CONFIG_AU1500 |
| 46 | #define ETH0_BASE AU1500_ETH0_BASE |
| 47 | #define MAC0_ENABLE AU1500_MAC0_ENABLE |
| 48 | #else |
wdenk | ff36fd8 | 2005-01-09 22:28:56 +0000 | [diff] [blame] | 49 | #ifdef CONFIG_AU1550 |
| 50 | #define ETH0_BASE AU1550_ETH0_BASE |
| 51 | #define MAC0_ENABLE AU1550_MAC0_ENABLE |
| 52 | #else |
wdenk | a2663ea | 2003-12-07 18:32:37 +0000 | [diff] [blame] | 53 | #error "No valid cpu set" |
| 54 | #endif |
| 55 | #endif |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 56 | #endif |
wdenk | ff36fd8 | 2005-01-09 22:28:56 +0000 | [diff] [blame] | 57 | #endif |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 58 | |
| 59 | #include <common.h> |
| 60 | #include <malloc.h> |
| 61 | #include <net.h> |
| 62 | #include <command.h> |
| 63 | #include <asm/io.h> |
| 64 | #include <asm/au1x00.h> |
| 65 | |
Jon Loeliger | 4431283 | 2007-07-09 19:06:00 -0500 | [diff] [blame] | 66 | #if defined(CONFIG_CMD_MII) |
Marian Balakowicz | 63ff004 | 2005-10-28 22:30:33 +0200 | [diff] [blame] | 67 | #include <miiphy.h> |
| 68 | #endif |
| 69 | |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 70 | /* Ethernet Transmit and Receive Buffers */ |
| 71 | #define DBUF_LENGTH 1520 |
| 72 | #define PKT_MAXBUF_SIZE 1518 |
| 73 | |
| 74 | static char txbuf[DBUF_LENGTH]; |
| 75 | |
| 76 | static int next_tx; |
| 77 | static int next_rx; |
| 78 | |
| 79 | /* 4 rx and 4 tx fifos */ |
| 80 | #define NO_OF_FIFOS 4 |
| 81 | |
| 82 | typedef struct{ |
| 83 | u32 status; |
| 84 | u32 addr; |
| 85 | u32 len; /* Only used for tx */ |
| 86 | u32 not_used; |
| 87 | } mac_fifo_t; |
| 88 | |
| 89 | mac_fifo_t mac_fifo[NO_OF_FIFOS]; |
| 90 | |
| 91 | #define MAX_WAIT 1000 |
| 92 | |
Shinya Kuribayashi | f013204 | 2007-10-27 15:00:25 +0900 | [diff] [blame] | 93 | #if defined(CONFIG_CMD_MII) |
| 94 | int au1x00_miiphy_read(char *devname, unsigned char addr, |
| 95 | unsigned char reg, unsigned short * value) |
| 96 | { |
| 97 | volatile u32 *mii_control_reg = (volatile u32*)(ETH0_BASE+MAC_MII_CNTRL); |
| 98 | volatile u32 *mii_data_reg = (volatile u32*)(ETH0_BASE+MAC_MII_DATA); |
| 99 | u32 mii_control; |
| 100 | unsigned int timedout = 20; |
| 101 | |
| 102 | while (*mii_control_reg & MAC_MII_BUSY) { |
| 103 | udelay(1000); |
| 104 | if (--timedout == 0) { |
| 105 | printf("au1x00_eth: miiphy_read busy timeout!!\n"); |
| 106 | return -1; |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | mii_control = MAC_SET_MII_SELECT_REG(reg) | |
| 111 | MAC_SET_MII_SELECT_PHY(addr) | MAC_MII_READ; |
| 112 | |
| 113 | *mii_control_reg = mii_control; |
| 114 | |
| 115 | timedout = 20; |
| 116 | while (*mii_control_reg & MAC_MII_BUSY) { |
| 117 | udelay(1000); |
| 118 | if (--timedout == 0) { |
| 119 | printf("au1x00_eth: miiphy_read busy timeout!!\n"); |
| 120 | return -1; |
| 121 | } |
| 122 | } |
| 123 | *value = *mii_data_reg; |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | int au1x00_miiphy_write(char *devname, unsigned char addr, |
| 128 | unsigned char reg, unsigned short value) |
| 129 | { |
| 130 | volatile u32 *mii_control_reg = (volatile u32*)(ETH0_BASE+MAC_MII_CNTRL); |
| 131 | volatile u32 *mii_data_reg = (volatile u32*)(ETH0_BASE+MAC_MII_DATA); |
| 132 | u32 mii_control; |
| 133 | unsigned int timedout = 20; |
| 134 | |
| 135 | while (*mii_control_reg & MAC_MII_BUSY) { |
| 136 | udelay(1000); |
| 137 | if (--timedout == 0) { |
| 138 | printf("au1x00_eth: miiphy_write busy timeout!!\n"); |
Shinya Kuribayashi | 4fbd074 | 2007-10-27 15:22:33 +0900 | [diff] [blame^] | 139 | return -1; |
Shinya Kuribayashi | f013204 | 2007-10-27 15:00:25 +0900 | [diff] [blame] | 140 | } |
| 141 | } |
| 142 | |
| 143 | mii_control = MAC_SET_MII_SELECT_REG(reg) | |
| 144 | MAC_SET_MII_SELECT_PHY(addr) | MAC_MII_WRITE; |
| 145 | |
| 146 | *mii_data_reg = value; |
| 147 | *mii_control_reg = mii_control; |
| 148 | return 0; |
| 149 | } |
| 150 | #endif |
| 151 | |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 152 | static int au1x00_send(struct eth_device* dev, volatile void *packet, int length){ |
| 153 | volatile mac_fifo_t *fifo_tx = |
| 154 | (volatile mac_fifo_t*)(MAC0_TX_DMA_ADDR+MAC_TX_BUFF0_STATUS); |
| 155 | int i; |
| 156 | int res; |
| 157 | |
| 158 | /* tx fifo should always be idle */ |
| 159 | fifo_tx[next_tx].len = length; |
| 160 | fifo_tx[next_tx].addr = (virt_to_phys(packet))|TX_DMA_ENABLE; |
| 161 | au_sync(); |
| 162 | |
| 163 | udelay(1); |
| 164 | i=0; |
| 165 | while(!(fifo_tx[next_tx].addr&TX_T_DONE)){ |
| 166 | if(i>MAX_WAIT){ |
| 167 | printf("TX timeout\n"); |
| 168 | break; |
| 169 | } |
| 170 | udelay(1); |
| 171 | i++; |
| 172 | } |
| 173 | |
| 174 | /* Clear done bit */ |
| 175 | fifo_tx[next_tx].addr = 0; |
| 176 | fifo_tx[next_tx].len = 0; |
| 177 | au_sync(); |
| 178 | |
| 179 | res = fifo_tx[next_tx].status; |
| 180 | |
| 181 | next_tx++; |
| 182 | if(next_tx>=NO_OF_FIFOS){ |
| 183 | next_tx=0; |
| 184 | } |
| 185 | return(res); |
| 186 | } |
| 187 | |
| 188 | static int au1x00_recv(struct eth_device* dev){ |
| 189 | volatile mac_fifo_t *fifo_rx = |
| 190 | (volatile mac_fifo_t*)(MAC0_RX_DMA_ADDR+MAC_RX_BUFF0_STATUS); |
| 191 | |
| 192 | int length; |
| 193 | u32 status; |
| 194 | |
| 195 | for(;;){ |
| 196 | if(!(fifo_rx[next_rx].addr&RX_T_DONE)){ |
| 197 | /* Nothing has been received */ |
| 198 | return(-1); |
| 199 | } |
| 200 | |
| 201 | status = fifo_rx[next_rx].status; |
| 202 | |
| 203 | length = status&0x3FFF; |
| 204 | |
| 205 | if(status&RX_ERROR){ |
| 206 | printf("Rx error 0x%x\n", status); |
| 207 | } |
| 208 | else{ |
| 209 | /* Pass the packet up to the protocol layers. */ |
| 210 | NetReceive(NetRxPackets[next_rx], length - 4); |
| 211 | } |
| 212 | |
| 213 | fifo_rx[next_rx].addr = (virt_to_phys(NetRxPackets[next_rx]))|RX_DMA_ENABLE; |
| 214 | |
| 215 | next_rx++; |
| 216 | if(next_rx>=NO_OF_FIFOS){ |
| 217 | next_rx=0; |
| 218 | } |
| 219 | } /* for */ |
| 220 | |
| 221 | return(0); /* Does anyone use this? */ |
| 222 | } |
| 223 | |
| 224 | static int au1x00_init(struct eth_device* dev, bd_t * bd){ |
| 225 | |
| 226 | volatile u32 *macen = (volatile u32*)MAC0_ENABLE; |
| 227 | volatile u32 *mac_ctrl = (volatile u32*)(ETH0_BASE+MAC_CONTROL); |
| 228 | volatile u32 *mac_addr_high = (volatile u32*)(ETH0_BASE+MAC_ADDRESS_HIGH); |
| 229 | volatile u32 *mac_addr_low = (volatile u32*)(ETH0_BASE+MAC_ADDRESS_LOW); |
| 230 | volatile u32 *mac_mcast_high = (volatile u32*)(ETH0_BASE+MAC_MCAST_HIGH); |
| 231 | volatile u32 *mac_mcast_low = (volatile u32*)(ETH0_BASE+MAC_MCAST_LOW); |
| 232 | volatile mac_fifo_t *fifo_tx = |
| 233 | (volatile mac_fifo_t*)(MAC0_TX_DMA_ADDR+MAC_TX_BUFF0_STATUS); |
| 234 | volatile mac_fifo_t *fifo_rx = |
| 235 | (volatile mac_fifo_t*)(MAC0_RX_DMA_ADDR+MAC_RX_BUFF0_STATUS); |
| 236 | int i; |
| 237 | |
Wolfgang Denk | 4bc12f1 | 2005-09-24 22:05:40 +0200 | [diff] [blame] | 238 | next_tx = TX_GET_DMA_BUFFER(fifo_tx[0].addr); |
| 239 | next_rx = RX_GET_DMA_BUFFER(fifo_rx[0].addr); |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 240 | |
| 241 | /* We have to enable clocks before releasing reset */ |
| 242 | *macen = MAC_EN_CLOCK_ENABLE; |
| 243 | udelay(10); |
| 244 | |
| 245 | /* Enable MAC0 */ |
| 246 | /* We have to release reset before accessing registers */ |
| 247 | *macen = MAC_EN_CLOCK_ENABLE|MAC_EN_RESET0| |
| 248 | MAC_EN_RESET1|MAC_EN_RESET2; |
| 249 | udelay(10); |
| 250 | |
| 251 | for(i=0;i<NO_OF_FIFOS;i++){ |
| 252 | fifo_tx[i].len = 0; |
| 253 | fifo_tx[i].addr = virt_to_phys(&txbuf[0]); |
| 254 | fifo_rx[i].addr = (virt_to_phys(NetRxPackets[i]))|RX_DMA_ENABLE; |
| 255 | } |
| 256 | |
| 257 | /* Put mac addr in little endian */ |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 258 | #define ea eth_get_dev()->enetaddr |
Wolfgang Denk | 265817c | 2005-09-25 00:53:22 +0200 | [diff] [blame] | 259 | *mac_addr_high = (ea[5] << 8) | (ea[4] ) ; |
| 260 | *mac_addr_low = (ea[3] << 24) | (ea[2] << 16) | |
| 261 | (ea[1] << 8) | (ea[0] ) ; |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 262 | #undef ea |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 263 | *mac_mcast_low = 0; |
| 264 | *mac_mcast_high = 0; |
| 265 | |
wdenk | 63f3491 | 2004-01-02 15:01:32 +0000 | [diff] [blame] | 266 | /* Make sure the MAC buffer is in the correct endian mode */ |
| 267 | #ifdef __LITTLE_ENDIAN |
| 268 | *mac_ctrl = MAC_FULL_DUPLEX; |
| 269 | udelay(1); |
| 270 | *mac_ctrl = MAC_FULL_DUPLEX|MAC_RX_ENABLE|MAC_TX_ENABLE; |
| 271 | #else |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 272 | *mac_ctrl = MAC_BIG_ENDIAN|MAC_FULL_DUPLEX; |
| 273 | udelay(1); |
| 274 | *mac_ctrl = MAC_BIG_ENDIAN|MAC_FULL_DUPLEX|MAC_RX_ENABLE|MAC_TX_ENABLE; |
wdenk | 63f3491 | 2004-01-02 15:01:32 +0000 | [diff] [blame] | 275 | #endif |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 276 | |
| 277 | return(1); |
| 278 | } |
| 279 | |
| 280 | static void au1x00_halt(struct eth_device* dev){ |
| 281 | } |
| 282 | |
| 283 | int au1x00_enet_initialize(bd_t *bis){ |
| 284 | struct eth_device* dev; |
| 285 | |
Wolfgang Denk | 9551530 | 2006-03-13 01:00:22 +0100 | [diff] [blame] | 286 | if ((dev = (struct eth_device*)malloc(sizeof *dev)) == NULL) { |
| 287 | puts ("malloc failed\n"); |
| 288 | return 0; |
| 289 | } |
| 290 | |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 291 | memset(dev, 0, sizeof *dev); |
| 292 | |
Wolfgang Denk | 9551530 | 2006-03-13 01:00:22 +0100 | [diff] [blame] | 293 | sprintf(dev->name, "Au1X00 ethernet"); |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 294 | dev->iobase = 0; |
| 295 | dev->priv = 0; |
| 296 | dev->init = au1x00_init; |
| 297 | dev->halt = au1x00_halt; |
| 298 | dev->send = au1x00_send; |
| 299 | dev->recv = au1x00_recv; |
| 300 | |
| 301 | eth_register(dev); |
| 302 | |
Jon Loeliger | 4431283 | 2007-07-09 19:06:00 -0500 | [diff] [blame] | 303 | #if defined(CONFIG_CMD_MII) |
Marian Balakowicz | 63ff004 | 2005-10-28 22:30:33 +0200 | [diff] [blame] | 304 | miiphy_register(dev->name, |
| 305 | au1x00_miiphy_read, au1x00_miiphy_write); |
| 306 | #endif |
| 307 | |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 308 | return 1; |
| 309 | } |
| 310 | |
wdenk | 5da627a | 2003-10-09 20:09:04 +0000 | [diff] [blame] | 311 | #endif /* CONFIG_AU1X00 */ |