Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2005-2006 Atmel Corporation |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 17 | */ |
| 18 | #include <common.h> |
| 19 | |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 20 | /* |
| 21 | * The u-boot networking stack is a little weird. It seems like the |
| 22 | * networking core allocates receive buffers up front without any |
| 23 | * regard to the hardware that's supposed to actually receive those |
| 24 | * packets. |
| 25 | * |
| 26 | * The MACB receives packets into 128-byte receive buffers, so the |
| 27 | * buffers allocated by the core isn't very practical to use. We'll |
| 28 | * allocate our own, but we need one such buffer in case a packet |
| 29 | * wraps around the DMA ring so that we have to copy it. |
| 30 | * |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 31 | * Therefore, define CONFIG_SYS_RX_ETH_BUFFER to 1 in the board-specific |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 32 | * configuration header. This way, the core allocates one RX buffer |
| 33 | * and one TX buffer, each of which can hold a ethernet packet of |
| 34 | * maximum size. |
| 35 | * |
| 36 | * For some reason, the networking core unconditionally specifies a |
| 37 | * 32-byte packet "alignment" (which really should be called |
| 38 | * "padding"). MACB shouldn't need that, but we'll refrain from any |
| 39 | * core modifications here... |
| 40 | */ |
| 41 | |
| 42 | #include <net.h> |
Ben Warren | 2f2b6b6 | 2008-08-31 22:22:04 -0700 | [diff] [blame] | 43 | #include <netdev.h> |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 44 | #include <malloc.h> |
Semih Hazar | 790088e | 2009-12-17 15:07:15 +0200 | [diff] [blame] | 45 | #include <miiphy.h> |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 46 | |
| 47 | #include <linux/mii.h> |
| 48 | #include <asm/io.h> |
| 49 | #include <asm/dma-mapping.h> |
| 50 | #include <asm/arch/clk.h> |
| 51 | |
| 52 | #include "macb.h" |
| 53 | |
Haavard Skinnemoen | 996e147 | 2007-05-02 13:22:38 +0200 | [diff] [blame] | 54 | #define barrier() asm volatile("" ::: "memory") |
| 55 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 56 | #define CONFIG_SYS_MACB_RX_BUFFER_SIZE 4096 |
| 57 | #define CONFIG_SYS_MACB_RX_RING_SIZE (CONFIG_SYS_MACB_RX_BUFFER_SIZE / 128) |
| 58 | #define CONFIG_SYS_MACB_TX_RING_SIZE 16 |
| 59 | #define CONFIG_SYS_MACB_TX_TIMEOUT 1000 |
| 60 | #define CONFIG_SYS_MACB_AUTONEG_TIMEOUT 5000000 |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 61 | |
| 62 | struct macb_dma_desc { |
| 63 | u32 addr; |
| 64 | u32 ctrl; |
| 65 | }; |
| 66 | |
| 67 | #define RXADDR_USED 0x00000001 |
| 68 | #define RXADDR_WRAP 0x00000002 |
| 69 | |
| 70 | #define RXBUF_FRMLEN_MASK 0x00000fff |
| 71 | #define RXBUF_FRAME_START 0x00004000 |
| 72 | #define RXBUF_FRAME_END 0x00008000 |
| 73 | #define RXBUF_TYPEID_MATCH 0x00400000 |
| 74 | #define RXBUF_ADDR4_MATCH 0x00800000 |
| 75 | #define RXBUF_ADDR3_MATCH 0x01000000 |
| 76 | #define RXBUF_ADDR2_MATCH 0x02000000 |
| 77 | #define RXBUF_ADDR1_MATCH 0x04000000 |
| 78 | #define RXBUF_BROADCAST 0x80000000 |
| 79 | |
| 80 | #define TXBUF_FRMLEN_MASK 0x000007ff |
| 81 | #define TXBUF_FRAME_END 0x00008000 |
| 82 | #define TXBUF_NOCRC 0x00010000 |
| 83 | #define TXBUF_EXHAUSTED 0x08000000 |
| 84 | #define TXBUF_UNDERRUN 0x10000000 |
| 85 | #define TXBUF_MAXRETRY 0x20000000 |
| 86 | #define TXBUF_WRAP 0x40000000 |
| 87 | #define TXBUF_USED 0x80000000 |
| 88 | |
| 89 | struct macb_device { |
| 90 | void *regs; |
| 91 | |
| 92 | unsigned int rx_tail; |
| 93 | unsigned int tx_head; |
| 94 | unsigned int tx_tail; |
| 95 | |
| 96 | void *rx_buffer; |
| 97 | void *tx_buffer; |
| 98 | struct macb_dma_desc *rx_ring; |
| 99 | struct macb_dma_desc *tx_ring; |
| 100 | |
| 101 | unsigned long rx_buffer_dma; |
| 102 | unsigned long rx_ring_dma; |
| 103 | unsigned long tx_ring_dma; |
| 104 | |
| 105 | const struct device *dev; |
| 106 | struct eth_device netdev; |
| 107 | unsigned short phy_addr; |
| 108 | }; |
| 109 | #define to_macb(_nd) container_of(_nd, struct macb_device, netdev) |
| 110 | |
| 111 | static void macb_mdio_write(struct macb_device *macb, u8 reg, u16 value) |
| 112 | { |
| 113 | unsigned long netctl; |
| 114 | unsigned long netstat; |
| 115 | unsigned long frame; |
| 116 | |
| 117 | netctl = macb_readl(macb, NCR); |
| 118 | netctl |= MACB_BIT(MPE); |
| 119 | macb_writel(macb, NCR, netctl); |
| 120 | |
| 121 | frame = (MACB_BF(SOF, 1) |
| 122 | | MACB_BF(RW, 1) |
| 123 | | MACB_BF(PHYA, macb->phy_addr) |
| 124 | | MACB_BF(REGA, reg) |
| 125 | | MACB_BF(CODE, 2) |
| 126 | | MACB_BF(DATA, value)); |
| 127 | macb_writel(macb, MAN, frame); |
| 128 | |
| 129 | do { |
| 130 | netstat = macb_readl(macb, NSR); |
| 131 | } while (!(netstat & MACB_BIT(IDLE))); |
| 132 | |
| 133 | netctl = macb_readl(macb, NCR); |
| 134 | netctl &= ~MACB_BIT(MPE); |
| 135 | macb_writel(macb, NCR, netctl); |
| 136 | } |
| 137 | |
| 138 | static u16 macb_mdio_read(struct macb_device *macb, u8 reg) |
| 139 | { |
| 140 | unsigned long netctl; |
| 141 | unsigned long netstat; |
| 142 | unsigned long frame; |
| 143 | |
| 144 | netctl = macb_readl(macb, NCR); |
| 145 | netctl |= MACB_BIT(MPE); |
| 146 | macb_writel(macb, NCR, netctl); |
| 147 | |
| 148 | frame = (MACB_BF(SOF, 1) |
| 149 | | MACB_BF(RW, 2) |
| 150 | | MACB_BF(PHYA, macb->phy_addr) |
| 151 | | MACB_BF(REGA, reg) |
| 152 | | MACB_BF(CODE, 2)); |
| 153 | macb_writel(macb, MAN, frame); |
| 154 | |
| 155 | do { |
| 156 | netstat = macb_readl(macb, NSR); |
| 157 | } while (!(netstat & MACB_BIT(IDLE))); |
| 158 | |
| 159 | frame = macb_readl(macb, MAN); |
| 160 | |
| 161 | netctl = macb_readl(macb, NCR); |
| 162 | netctl &= ~MACB_BIT(MPE); |
| 163 | macb_writel(macb, NCR, netctl); |
| 164 | |
| 165 | return MACB_BFEXT(DATA, frame); |
| 166 | } |
| 167 | |
Semih Hazar | 790088e | 2009-12-17 15:07:15 +0200 | [diff] [blame] | 168 | #if defined(CONFIG_CMD_MII) |
| 169 | |
| 170 | int macb_miiphy_read(char *devname, u8 phy_adr, u8 reg, u16 *value) |
| 171 | { |
| 172 | struct eth_device *dev = eth_get_dev_by_name(devname); |
| 173 | struct macb_device *macb = to_macb(dev); |
| 174 | |
| 175 | if ( macb->phy_addr != phy_adr ) |
| 176 | return -1; |
| 177 | |
| 178 | *value = macb_mdio_read(macb, reg); |
| 179 | |
| 180 | return 0; |
| 181 | } |
| 182 | |
| 183 | int macb_miiphy_write(char *devname, u8 phy_adr, u8 reg, u16 value) |
| 184 | { |
| 185 | struct eth_device *dev = eth_get_dev_by_name(devname); |
| 186 | struct macb_device *macb = to_macb(dev); |
| 187 | |
| 188 | if ( macb->phy_addr != phy_adr ) |
| 189 | return -1; |
| 190 | |
| 191 | macb_mdio_write(macb, reg, value); |
| 192 | |
| 193 | return 0; |
| 194 | } |
| 195 | #endif |
| 196 | |
| 197 | |
Jon Loeliger | b1d408a | 2007-07-09 17:30:01 -0500 | [diff] [blame] | 198 | #if defined(CONFIG_CMD_NET) |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 199 | |
| 200 | static int macb_send(struct eth_device *netdev, volatile void *packet, |
| 201 | int length) |
| 202 | { |
| 203 | struct macb_device *macb = to_macb(netdev); |
| 204 | unsigned long paddr, ctrl; |
| 205 | unsigned int tx_head = macb->tx_head; |
| 206 | int i; |
| 207 | |
| 208 | paddr = dma_map_single(packet, length, DMA_TO_DEVICE); |
| 209 | |
| 210 | ctrl = length & TXBUF_FRMLEN_MASK; |
| 211 | ctrl |= TXBUF_FRAME_END; |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 212 | if (tx_head == (CONFIG_SYS_MACB_TX_RING_SIZE - 1)) { |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 213 | ctrl |= TXBUF_WRAP; |
| 214 | macb->tx_head = 0; |
| 215 | } else |
| 216 | macb->tx_head++; |
| 217 | |
| 218 | macb->tx_ring[tx_head].ctrl = ctrl; |
| 219 | macb->tx_ring[tx_head].addr = paddr; |
Haavard Skinnemoen | 996e147 | 2007-05-02 13:22:38 +0200 | [diff] [blame] | 220 | barrier(); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 221 | macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE) | MACB_BIT(TSTART)); |
| 222 | |
| 223 | /* |
| 224 | * I guess this is necessary because the networking core may |
| 225 | * re-use the transmit buffer as soon as we return... |
| 226 | */ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 227 | for (i = 0; i <= CONFIG_SYS_MACB_TX_TIMEOUT; i++) { |
Haavard Skinnemoen | 996e147 | 2007-05-02 13:22:38 +0200 | [diff] [blame] | 228 | barrier(); |
| 229 | ctrl = macb->tx_ring[tx_head].ctrl; |
| 230 | if (ctrl & TXBUF_USED) |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 231 | break; |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 232 | udelay(1); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 233 | } |
| 234 | |
| 235 | dma_unmap_single(packet, length, paddr); |
| 236 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 237 | if (i <= CONFIG_SYS_MACB_TX_TIMEOUT) { |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 238 | if (ctrl & TXBUF_UNDERRUN) |
| 239 | printf("%s: TX underrun\n", netdev->name); |
| 240 | if (ctrl & TXBUF_EXHAUSTED) |
| 241 | printf("%s: TX buffers exhausted in mid frame\n", |
| 242 | netdev->name); |
Haavard Skinnemoen | 996e147 | 2007-05-02 13:22:38 +0200 | [diff] [blame] | 243 | } else { |
| 244 | printf("%s: TX timeout\n", netdev->name); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 245 | } |
| 246 | |
| 247 | /* No one cares anyway */ |
| 248 | return 0; |
| 249 | } |
| 250 | |
| 251 | static void reclaim_rx_buffers(struct macb_device *macb, |
| 252 | unsigned int new_tail) |
| 253 | { |
| 254 | unsigned int i; |
| 255 | |
| 256 | i = macb->rx_tail; |
| 257 | while (i > new_tail) { |
| 258 | macb->rx_ring[i].addr &= ~RXADDR_USED; |
| 259 | i++; |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 260 | if (i > CONFIG_SYS_MACB_RX_RING_SIZE) |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 261 | i = 0; |
| 262 | } |
| 263 | |
| 264 | while (i < new_tail) { |
| 265 | macb->rx_ring[i].addr &= ~RXADDR_USED; |
| 266 | i++; |
| 267 | } |
| 268 | |
Haavard Skinnemoen | 996e147 | 2007-05-02 13:22:38 +0200 | [diff] [blame] | 269 | barrier(); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 270 | macb->rx_tail = new_tail; |
| 271 | } |
| 272 | |
| 273 | static int macb_recv(struct eth_device *netdev) |
| 274 | { |
| 275 | struct macb_device *macb = to_macb(netdev); |
| 276 | unsigned int rx_tail = macb->rx_tail; |
| 277 | void *buffer; |
| 278 | int length; |
| 279 | int wrapped = 0; |
| 280 | u32 status; |
| 281 | |
| 282 | for (;;) { |
| 283 | if (!(macb->rx_ring[rx_tail].addr & RXADDR_USED)) |
| 284 | return -1; |
| 285 | |
| 286 | status = macb->rx_ring[rx_tail].ctrl; |
| 287 | if (status & RXBUF_FRAME_START) { |
| 288 | if (rx_tail != macb->rx_tail) |
| 289 | reclaim_rx_buffers(macb, rx_tail); |
| 290 | wrapped = 0; |
| 291 | } |
| 292 | |
| 293 | if (status & RXBUF_FRAME_END) { |
| 294 | buffer = macb->rx_buffer + 128 * macb->rx_tail; |
| 295 | length = status & RXBUF_FRMLEN_MASK; |
| 296 | if (wrapped) { |
| 297 | unsigned int headlen, taillen; |
| 298 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 299 | headlen = 128 * (CONFIG_SYS_MACB_RX_RING_SIZE |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 300 | - macb->rx_tail); |
| 301 | taillen = length - headlen; |
| 302 | memcpy((void *)NetRxPackets[0], |
| 303 | buffer, headlen); |
| 304 | memcpy((void *)NetRxPackets[0] + headlen, |
| 305 | macb->rx_buffer, taillen); |
| 306 | buffer = (void *)NetRxPackets[0]; |
| 307 | } |
| 308 | |
| 309 | NetReceive(buffer, length); |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 310 | if (++rx_tail >= CONFIG_SYS_MACB_RX_RING_SIZE) |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 311 | rx_tail = 0; |
| 312 | reclaim_rx_buffers(macb, rx_tail); |
| 313 | } else { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 314 | if (++rx_tail >= CONFIG_SYS_MACB_RX_RING_SIZE) { |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 315 | wrapped = 1; |
| 316 | rx_tail = 0; |
| 317 | } |
| 318 | } |
Haavard Skinnemoen | 996e147 | 2007-05-02 13:22:38 +0200 | [diff] [blame] | 319 | barrier(); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 320 | } |
| 321 | |
| 322 | return 0; |
| 323 | } |
| 324 | |
Haavard Skinnemoen | b3ad772 | 2007-05-02 13:31:53 +0200 | [diff] [blame] | 325 | static void macb_phy_reset(struct macb_device *macb) |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 326 | { |
| 327 | struct eth_device *netdev = &macb->netdev; |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 328 | int i; |
Haavard Skinnemoen | b3ad772 | 2007-05-02 13:31:53 +0200 | [diff] [blame] | 329 | u16 status, adv; |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 330 | |
| 331 | adv = ADVERTISE_CSMA | ADVERTISE_ALL; |
| 332 | macb_mdio_write(macb, MII_ADVERTISE, adv); |
| 333 | printf("%s: Starting autonegotiation...\n", netdev->name); |
| 334 | macb_mdio_write(macb, MII_BMCR, (BMCR_ANENABLE |
| 335 | | BMCR_ANRESTART)); |
| 336 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 337 | for (i = 0; i < CONFIG_SYS_MACB_AUTONEG_TIMEOUT / 100; i++) { |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 338 | status = macb_mdio_read(macb, MII_BMSR); |
| 339 | if (status & BMSR_ANEGCOMPLETE) |
| 340 | break; |
| 341 | udelay(100); |
| 342 | } |
| 343 | |
| 344 | if (status & BMSR_ANEGCOMPLETE) |
| 345 | printf("%s: Autonegotiation complete\n", netdev->name); |
| 346 | else |
| 347 | printf("%s: Autonegotiation timed out (status=0x%04x)\n", |
| 348 | netdev->name, status); |
Haavard Skinnemoen | b3ad772 | 2007-05-02 13:31:53 +0200 | [diff] [blame] | 349 | } |
| 350 | |
Gunnar Rangoy | 6dd74f3 | 2009-01-23 12:56:31 +0100 | [diff] [blame] | 351 | #ifdef CONFIG_MACB_SEARCH_PHY |
| 352 | static int macb_phy_find(struct macb_device *macb) |
| 353 | { |
| 354 | int i; |
| 355 | u16 phy_id; |
| 356 | |
| 357 | /* Search for PHY... */ |
| 358 | for (i = 0; i < 32; i++) { |
| 359 | macb->phy_addr = i; |
| 360 | phy_id = macb_mdio_read(macb, MII_PHYSID1); |
| 361 | if (phy_id != 0xffff) { |
| 362 | printf("%s: PHY present at %d\n", macb->netdev.name, i); |
| 363 | return 1; |
| 364 | } |
| 365 | } |
| 366 | |
| 367 | /* PHY isn't up to snuff */ |
| 368 | printf("%s: PHY not found", macb->netdev.name); |
| 369 | |
| 370 | return 0; |
| 371 | } |
| 372 | #endif /* CONFIG_MACB_SEARCH_PHY */ |
| 373 | |
| 374 | |
Haavard Skinnemoen | b3ad772 | 2007-05-02 13:31:53 +0200 | [diff] [blame] | 375 | static int macb_phy_init(struct macb_device *macb) |
| 376 | { |
| 377 | struct eth_device *netdev = &macb->netdev; |
| 378 | u32 ncfgr; |
| 379 | u16 phy_id, status, adv, lpa; |
| 380 | int media, speed, duplex; |
| 381 | int i; |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 382 | |
Gunnar Rangoy | 6dd74f3 | 2009-01-23 12:56:31 +0100 | [diff] [blame] | 383 | #ifdef CONFIG_MACB_SEARCH_PHY |
| 384 | /* Auto-detect phy_addr */ |
| 385 | if (!macb_phy_find(macb)) { |
| 386 | return 0; |
| 387 | } |
| 388 | #endif /* CONFIG_MACB_SEARCH_PHY */ |
| 389 | |
Haavard Skinnemoen | b3ad772 | 2007-05-02 13:31:53 +0200 | [diff] [blame] | 390 | /* Check if the PHY is up to snuff... */ |
| 391 | phy_id = macb_mdio_read(macb, MII_PHYSID1); |
| 392 | if (phy_id == 0xffff) { |
| 393 | printf("%s: No PHY present\n", netdev->name); |
| 394 | return 0; |
| 395 | } |
| 396 | |
| 397 | status = macb_mdio_read(macb, MII_BMSR); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 398 | if (!(status & BMSR_LSTATUS)) { |
Haavard Skinnemoen | b3ad772 | 2007-05-02 13:31:53 +0200 | [diff] [blame] | 399 | /* Try to re-negotiate if we don't have link already. */ |
| 400 | macb_phy_reset(macb); |
| 401 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 402 | for (i = 0; i < CONFIG_SYS_MACB_AUTONEG_TIMEOUT / 100; i++) { |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 403 | status = macb_mdio_read(macb, MII_BMSR); |
| 404 | if (status & BMSR_LSTATUS) |
| 405 | break; |
Haavard Skinnemoen | b3ad772 | 2007-05-02 13:31:53 +0200 | [diff] [blame] | 406 | udelay(100); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 407 | } |
| 408 | } |
| 409 | |
| 410 | if (!(status & BMSR_LSTATUS)) { |
| 411 | printf("%s: link down (status: 0x%04x)\n", |
| 412 | netdev->name, status); |
| 413 | return 0; |
| 414 | } else { |
Haavard Skinnemoen | b3ad772 | 2007-05-02 13:31:53 +0200 | [diff] [blame] | 415 | adv = macb_mdio_read(macb, MII_ADVERTISE); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 416 | lpa = macb_mdio_read(macb, MII_LPA); |
| 417 | media = mii_nway_result(lpa & adv); |
| 418 | speed = (media & (ADVERTISE_100FULL | ADVERTISE_100HALF) |
| 419 | ? 1 : 0); |
| 420 | duplex = (media & ADVERTISE_FULL) ? 1 : 0; |
| 421 | printf("%s: link up, %sMbps %s-duplex (lpa: 0x%04x)\n", |
| 422 | netdev->name, |
| 423 | speed ? "100" : "10", |
| 424 | duplex ? "full" : "half", |
| 425 | lpa); |
| 426 | |
| 427 | ncfgr = macb_readl(macb, NCFGR); |
| 428 | ncfgr &= ~(MACB_BIT(SPD) | MACB_BIT(FD)); |
| 429 | if (speed) |
| 430 | ncfgr |= MACB_BIT(SPD); |
| 431 | if (duplex) |
| 432 | ncfgr |= MACB_BIT(FD); |
| 433 | macb_writel(macb, NCFGR, ncfgr); |
| 434 | return 1; |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | static int macb_init(struct eth_device *netdev, bd_t *bd) |
| 439 | { |
| 440 | struct macb_device *macb = to_macb(netdev); |
| 441 | unsigned long paddr; |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 442 | int i; |
| 443 | |
| 444 | /* |
| 445 | * macb_halt should have been called at some point before now, |
| 446 | * so we'll assume the controller is idle. |
| 447 | */ |
| 448 | |
| 449 | /* initialize DMA descriptors */ |
| 450 | paddr = macb->rx_buffer_dma; |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 451 | for (i = 0; i < CONFIG_SYS_MACB_RX_RING_SIZE; i++) { |
| 452 | if (i == (CONFIG_SYS_MACB_RX_RING_SIZE - 1)) |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 453 | paddr |= RXADDR_WRAP; |
| 454 | macb->rx_ring[i].addr = paddr; |
| 455 | macb->rx_ring[i].ctrl = 0; |
| 456 | paddr += 128; |
| 457 | } |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 458 | for (i = 0; i < CONFIG_SYS_MACB_TX_RING_SIZE; i++) { |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 459 | macb->tx_ring[i].addr = 0; |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 460 | if (i == (CONFIG_SYS_MACB_TX_RING_SIZE - 1)) |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 461 | macb->tx_ring[i].ctrl = TXBUF_USED | TXBUF_WRAP; |
| 462 | else |
| 463 | macb->tx_ring[i].ctrl = TXBUF_USED; |
| 464 | } |
| 465 | macb->rx_tail = macb->tx_head = macb->tx_tail = 0; |
| 466 | |
| 467 | macb_writel(macb, RBQP, macb->rx_ring_dma); |
| 468 | macb_writel(macb, TBQP, macb->tx_ring_dma); |
| 469 | |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 470 | /* choose RMII or MII mode. This depends on the board */ |
| 471 | #ifdef CONFIG_RMII |
Stelian Pop | 69c925f | 2008-05-08 18:52:23 +0200 | [diff] [blame] | 472 | #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \ |
Sedji Gaouaou | 538566d | 2009-07-09 10:16:29 +0200 | [diff] [blame] | 473 | defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) || \ |
| 474 | defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45) |
Stelian Pop | 87a8254 | 2008-01-03 21:15:56 +0000 | [diff] [blame] | 475 | macb_writel(macb, USRIO, MACB_BIT(RMII) | MACB_BIT(CLKEN)); |
| 476 | #else |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 477 | macb_writel(macb, USRIO, 0); |
Stelian Pop | 87a8254 | 2008-01-03 21:15:56 +0000 | [diff] [blame] | 478 | #endif |
| 479 | #else |
Stelian Pop | 69c925f | 2008-05-08 18:52:23 +0200 | [diff] [blame] | 480 | #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \ |
Sedji Gaouaou | 538566d | 2009-07-09 10:16:29 +0200 | [diff] [blame] | 481 | defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) || \ |
| 482 | defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45) |
Stelian Pop | 87a8254 | 2008-01-03 21:15:56 +0000 | [diff] [blame] | 483 | macb_writel(macb, USRIO, MACB_BIT(CLKEN)); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 484 | #else |
| 485 | macb_writel(macb, USRIO, MACB_BIT(MII)); |
| 486 | #endif |
Stelian Pop | 87a8254 | 2008-01-03 21:15:56 +0000 | [diff] [blame] | 487 | #endif /* CONFIG_RMII */ |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 488 | |
| 489 | if (!macb_phy_init(macb)) |
Ben Warren | de9fcb5 | 2008-01-09 18:15:53 -0500 | [diff] [blame] | 490 | return -1; |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 491 | |
| 492 | /* Enable TX and RX */ |
| 493 | macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE)); |
| 494 | |
Ben Warren | de9fcb5 | 2008-01-09 18:15:53 -0500 | [diff] [blame] | 495 | return 0; |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 496 | } |
| 497 | |
| 498 | static void macb_halt(struct eth_device *netdev) |
| 499 | { |
| 500 | struct macb_device *macb = to_macb(netdev); |
| 501 | u32 ncr, tsr; |
| 502 | |
| 503 | /* Halt the controller and wait for any ongoing transmission to end. */ |
| 504 | ncr = macb_readl(macb, NCR); |
| 505 | ncr |= MACB_BIT(THALT); |
| 506 | macb_writel(macb, NCR, ncr); |
| 507 | |
| 508 | do { |
| 509 | tsr = macb_readl(macb, TSR); |
| 510 | } while (tsr & MACB_BIT(TGO)); |
| 511 | |
| 512 | /* Disable TX and RX, and clear statistics */ |
| 513 | macb_writel(macb, NCR, MACB_BIT(CLRSTAT)); |
| 514 | } |
| 515 | |
Ben Warren | 33f8431 | 2010-06-01 11:55:42 -0700 | [diff] [blame] | 516 | static int macb_write_hwaddr(struct eth_device *dev) |
| 517 | { |
| 518 | struct macb_device *macb = to_macb(dev); |
| 519 | u32 hwaddr_bottom; |
| 520 | u16 hwaddr_top; |
| 521 | |
| 522 | /* set hardware address */ |
| 523 | hwaddr_bottom = cpu_to_le32(*((u32 *)dev->enetaddr)); |
| 524 | macb_writel(macb, SA1B, hwaddr_bottom); |
| 525 | hwaddr_top = cpu_to_le16(*((u16 *)(dev->enetaddr + 4))); |
| 526 | macb_writel(macb, SA1T, hwaddr_top); |
| 527 | return 0; |
| 528 | } |
| 529 | |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 530 | int macb_eth_initialize(int id, void *regs, unsigned int phy_addr) |
| 531 | { |
| 532 | struct macb_device *macb; |
| 533 | struct eth_device *netdev; |
| 534 | unsigned long macb_hz; |
| 535 | u32 ncfgr; |
| 536 | |
| 537 | macb = malloc(sizeof(struct macb_device)); |
| 538 | if (!macb) { |
| 539 | printf("Error: Failed to allocate memory for MACB%d\n", id); |
| 540 | return -1; |
| 541 | } |
| 542 | memset(macb, 0, sizeof(struct macb_device)); |
| 543 | |
| 544 | netdev = &macb->netdev; |
| 545 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 546 | macb->rx_buffer = dma_alloc_coherent(CONFIG_SYS_MACB_RX_BUFFER_SIZE, |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 547 | &macb->rx_buffer_dma); |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 548 | macb->rx_ring = dma_alloc_coherent(CONFIG_SYS_MACB_RX_RING_SIZE |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 549 | * sizeof(struct macb_dma_desc), |
| 550 | &macb->rx_ring_dma); |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 551 | macb->tx_ring = dma_alloc_coherent(CONFIG_SYS_MACB_TX_RING_SIZE |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 552 | * sizeof(struct macb_dma_desc), |
| 553 | &macb->tx_ring_dma); |
| 554 | |
| 555 | macb->regs = regs; |
| 556 | macb->phy_addr = phy_addr; |
| 557 | |
| 558 | sprintf(netdev->name, "macb%d", id); |
| 559 | netdev->init = macb_init; |
| 560 | netdev->halt = macb_halt; |
| 561 | netdev->send = macb_send; |
| 562 | netdev->recv = macb_recv; |
Ben Warren | 33f8431 | 2010-06-01 11:55:42 -0700 | [diff] [blame] | 563 | netdev->write_hwaddr = macb_write_hwaddr; |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 564 | |
| 565 | /* |
| 566 | * Do some basic initialization so that we at least can talk |
| 567 | * to the PHY |
| 568 | */ |
| 569 | macb_hz = get_macb_pclk_rate(id); |
| 570 | if (macb_hz < 20000000) |
| 571 | ncfgr = MACB_BF(CLK, MACB_CLK_DIV8); |
| 572 | else if (macb_hz < 40000000) |
| 573 | ncfgr = MACB_BF(CLK, MACB_CLK_DIV16); |
| 574 | else if (macb_hz < 80000000) |
| 575 | ncfgr = MACB_BF(CLK, MACB_CLK_DIV32); |
| 576 | else |
| 577 | ncfgr = MACB_BF(CLK, MACB_CLK_DIV64); |
| 578 | |
| 579 | macb_writel(macb, NCFGR, ncfgr); |
| 580 | |
| 581 | eth_register(netdev); |
| 582 | |
Jon Loeliger | b1d408a | 2007-07-09 17:30:01 -0500 | [diff] [blame] | 583 | #if defined(CONFIG_CMD_MII) |
Semih Hazar | 790088e | 2009-12-17 15:07:15 +0200 | [diff] [blame] | 584 | miiphy_register(netdev->name, macb_miiphy_read, macb_miiphy_write); |
| 585 | #endif |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 586 | return 0; |
| 587 | } |
| 588 | |
Jon Loeliger | b1d408a | 2007-07-09 17:30:01 -0500 | [diff] [blame] | 589 | #endif |