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> |
| 45 | |
| 46 | #include <linux/mii.h> |
| 47 | #include <asm/io.h> |
| 48 | #include <asm/dma-mapping.h> |
| 49 | #include <asm/arch/clk.h> |
| 50 | |
| 51 | #include "macb.h" |
| 52 | |
Haavard Skinnemoen | 996e147 | 2007-05-02 13:22:38 +0200 | [diff] [blame] | 53 | #define barrier() asm volatile("" ::: "memory") |
| 54 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 55 | #define CONFIG_SYS_MACB_RX_BUFFER_SIZE 4096 |
| 56 | #define CONFIG_SYS_MACB_RX_RING_SIZE (CONFIG_SYS_MACB_RX_BUFFER_SIZE / 128) |
| 57 | #define CONFIG_SYS_MACB_TX_RING_SIZE 16 |
| 58 | #define CONFIG_SYS_MACB_TX_TIMEOUT 1000 |
| 59 | #define CONFIG_SYS_MACB_AUTONEG_TIMEOUT 5000000 |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 60 | |
| 61 | struct macb_dma_desc { |
| 62 | u32 addr; |
| 63 | u32 ctrl; |
| 64 | }; |
| 65 | |
| 66 | #define RXADDR_USED 0x00000001 |
| 67 | #define RXADDR_WRAP 0x00000002 |
| 68 | |
| 69 | #define RXBUF_FRMLEN_MASK 0x00000fff |
| 70 | #define RXBUF_FRAME_START 0x00004000 |
| 71 | #define RXBUF_FRAME_END 0x00008000 |
| 72 | #define RXBUF_TYPEID_MATCH 0x00400000 |
| 73 | #define RXBUF_ADDR4_MATCH 0x00800000 |
| 74 | #define RXBUF_ADDR3_MATCH 0x01000000 |
| 75 | #define RXBUF_ADDR2_MATCH 0x02000000 |
| 76 | #define RXBUF_ADDR1_MATCH 0x04000000 |
| 77 | #define RXBUF_BROADCAST 0x80000000 |
| 78 | |
| 79 | #define TXBUF_FRMLEN_MASK 0x000007ff |
| 80 | #define TXBUF_FRAME_END 0x00008000 |
| 81 | #define TXBUF_NOCRC 0x00010000 |
| 82 | #define TXBUF_EXHAUSTED 0x08000000 |
| 83 | #define TXBUF_UNDERRUN 0x10000000 |
| 84 | #define TXBUF_MAXRETRY 0x20000000 |
| 85 | #define TXBUF_WRAP 0x40000000 |
| 86 | #define TXBUF_USED 0x80000000 |
| 87 | |
| 88 | struct macb_device { |
| 89 | void *regs; |
| 90 | |
| 91 | unsigned int rx_tail; |
| 92 | unsigned int tx_head; |
| 93 | unsigned int tx_tail; |
| 94 | |
| 95 | void *rx_buffer; |
| 96 | void *tx_buffer; |
| 97 | struct macb_dma_desc *rx_ring; |
| 98 | struct macb_dma_desc *tx_ring; |
| 99 | |
| 100 | unsigned long rx_buffer_dma; |
| 101 | unsigned long rx_ring_dma; |
| 102 | unsigned long tx_ring_dma; |
| 103 | |
| 104 | const struct device *dev; |
| 105 | struct eth_device netdev; |
| 106 | unsigned short phy_addr; |
| 107 | }; |
| 108 | #define to_macb(_nd) container_of(_nd, struct macb_device, netdev) |
| 109 | |
| 110 | static void macb_mdio_write(struct macb_device *macb, u8 reg, u16 value) |
| 111 | { |
| 112 | unsigned long netctl; |
| 113 | unsigned long netstat; |
| 114 | unsigned long frame; |
| 115 | |
| 116 | netctl = macb_readl(macb, NCR); |
| 117 | netctl |= MACB_BIT(MPE); |
| 118 | macb_writel(macb, NCR, netctl); |
| 119 | |
| 120 | frame = (MACB_BF(SOF, 1) |
| 121 | | MACB_BF(RW, 1) |
| 122 | | MACB_BF(PHYA, macb->phy_addr) |
| 123 | | MACB_BF(REGA, reg) |
| 124 | | MACB_BF(CODE, 2) |
| 125 | | MACB_BF(DATA, value)); |
| 126 | macb_writel(macb, MAN, frame); |
| 127 | |
| 128 | do { |
| 129 | netstat = macb_readl(macb, NSR); |
| 130 | } while (!(netstat & MACB_BIT(IDLE))); |
| 131 | |
| 132 | netctl = macb_readl(macb, NCR); |
| 133 | netctl &= ~MACB_BIT(MPE); |
| 134 | macb_writel(macb, NCR, netctl); |
| 135 | } |
| 136 | |
| 137 | static u16 macb_mdio_read(struct macb_device *macb, u8 reg) |
| 138 | { |
| 139 | unsigned long netctl; |
| 140 | unsigned long netstat; |
| 141 | unsigned long frame; |
| 142 | |
| 143 | netctl = macb_readl(macb, NCR); |
| 144 | netctl |= MACB_BIT(MPE); |
| 145 | macb_writel(macb, NCR, netctl); |
| 146 | |
| 147 | frame = (MACB_BF(SOF, 1) |
| 148 | | MACB_BF(RW, 2) |
| 149 | | MACB_BF(PHYA, macb->phy_addr) |
| 150 | | MACB_BF(REGA, reg) |
| 151 | | MACB_BF(CODE, 2)); |
| 152 | macb_writel(macb, MAN, frame); |
| 153 | |
| 154 | do { |
| 155 | netstat = macb_readl(macb, NSR); |
| 156 | } while (!(netstat & MACB_BIT(IDLE))); |
| 157 | |
| 158 | frame = macb_readl(macb, MAN); |
| 159 | |
| 160 | netctl = macb_readl(macb, NCR); |
| 161 | netctl &= ~MACB_BIT(MPE); |
| 162 | macb_writel(macb, NCR, netctl); |
| 163 | |
| 164 | return MACB_BFEXT(DATA, frame); |
| 165 | } |
| 166 | |
Jon Loeliger | b1d408a | 2007-07-09 17:30:01 -0500 | [diff] [blame] | 167 | #if defined(CONFIG_CMD_NET) |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 168 | |
| 169 | static int macb_send(struct eth_device *netdev, volatile void *packet, |
| 170 | int length) |
| 171 | { |
| 172 | struct macb_device *macb = to_macb(netdev); |
| 173 | unsigned long paddr, ctrl; |
| 174 | unsigned int tx_head = macb->tx_head; |
| 175 | int i; |
| 176 | |
| 177 | paddr = dma_map_single(packet, length, DMA_TO_DEVICE); |
| 178 | |
| 179 | ctrl = length & TXBUF_FRMLEN_MASK; |
| 180 | ctrl |= TXBUF_FRAME_END; |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 181 | if (tx_head == (CONFIG_SYS_MACB_TX_RING_SIZE - 1)) { |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 182 | ctrl |= TXBUF_WRAP; |
| 183 | macb->tx_head = 0; |
| 184 | } else |
| 185 | macb->tx_head++; |
| 186 | |
| 187 | macb->tx_ring[tx_head].ctrl = ctrl; |
| 188 | macb->tx_ring[tx_head].addr = paddr; |
Haavard Skinnemoen | 996e147 | 2007-05-02 13:22:38 +0200 | [diff] [blame] | 189 | barrier(); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 190 | macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE) | MACB_BIT(TSTART)); |
| 191 | |
| 192 | /* |
| 193 | * I guess this is necessary because the networking core may |
| 194 | * re-use the transmit buffer as soon as we return... |
| 195 | */ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 196 | for (i = 0; i <= CONFIG_SYS_MACB_TX_TIMEOUT; i++) { |
Haavard Skinnemoen | 996e147 | 2007-05-02 13:22:38 +0200 | [diff] [blame] | 197 | barrier(); |
| 198 | ctrl = macb->tx_ring[tx_head].ctrl; |
| 199 | if (ctrl & TXBUF_USED) |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 200 | break; |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 201 | udelay(1); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | dma_unmap_single(packet, length, paddr); |
| 205 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 206 | if (i <= CONFIG_SYS_MACB_TX_TIMEOUT) { |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 207 | if (ctrl & TXBUF_UNDERRUN) |
| 208 | printf("%s: TX underrun\n", netdev->name); |
| 209 | if (ctrl & TXBUF_EXHAUSTED) |
| 210 | printf("%s: TX buffers exhausted in mid frame\n", |
| 211 | netdev->name); |
Haavard Skinnemoen | 996e147 | 2007-05-02 13:22:38 +0200 | [diff] [blame] | 212 | } else { |
| 213 | printf("%s: TX timeout\n", netdev->name); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 214 | } |
| 215 | |
| 216 | /* No one cares anyway */ |
| 217 | return 0; |
| 218 | } |
| 219 | |
| 220 | static void reclaim_rx_buffers(struct macb_device *macb, |
| 221 | unsigned int new_tail) |
| 222 | { |
| 223 | unsigned int i; |
| 224 | |
| 225 | i = macb->rx_tail; |
| 226 | while (i > new_tail) { |
| 227 | macb->rx_ring[i].addr &= ~RXADDR_USED; |
| 228 | i++; |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 229 | if (i > CONFIG_SYS_MACB_RX_RING_SIZE) |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 230 | i = 0; |
| 231 | } |
| 232 | |
| 233 | while (i < new_tail) { |
| 234 | macb->rx_ring[i].addr &= ~RXADDR_USED; |
| 235 | i++; |
| 236 | } |
| 237 | |
Haavard Skinnemoen | 996e147 | 2007-05-02 13:22:38 +0200 | [diff] [blame] | 238 | barrier(); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 239 | macb->rx_tail = new_tail; |
| 240 | } |
| 241 | |
| 242 | static int macb_recv(struct eth_device *netdev) |
| 243 | { |
| 244 | struct macb_device *macb = to_macb(netdev); |
| 245 | unsigned int rx_tail = macb->rx_tail; |
| 246 | void *buffer; |
| 247 | int length; |
| 248 | int wrapped = 0; |
| 249 | u32 status; |
| 250 | |
| 251 | for (;;) { |
| 252 | if (!(macb->rx_ring[rx_tail].addr & RXADDR_USED)) |
| 253 | return -1; |
| 254 | |
| 255 | status = macb->rx_ring[rx_tail].ctrl; |
| 256 | if (status & RXBUF_FRAME_START) { |
| 257 | if (rx_tail != macb->rx_tail) |
| 258 | reclaim_rx_buffers(macb, rx_tail); |
| 259 | wrapped = 0; |
| 260 | } |
| 261 | |
| 262 | if (status & RXBUF_FRAME_END) { |
| 263 | buffer = macb->rx_buffer + 128 * macb->rx_tail; |
| 264 | length = status & RXBUF_FRMLEN_MASK; |
| 265 | if (wrapped) { |
| 266 | unsigned int headlen, taillen; |
| 267 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 268 | headlen = 128 * (CONFIG_SYS_MACB_RX_RING_SIZE |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 269 | - macb->rx_tail); |
| 270 | taillen = length - headlen; |
| 271 | memcpy((void *)NetRxPackets[0], |
| 272 | buffer, headlen); |
| 273 | memcpy((void *)NetRxPackets[0] + headlen, |
| 274 | macb->rx_buffer, taillen); |
| 275 | buffer = (void *)NetRxPackets[0]; |
| 276 | } |
| 277 | |
| 278 | NetReceive(buffer, length); |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 279 | if (++rx_tail >= CONFIG_SYS_MACB_RX_RING_SIZE) |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 280 | rx_tail = 0; |
| 281 | reclaim_rx_buffers(macb, rx_tail); |
| 282 | } else { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 283 | if (++rx_tail >= CONFIG_SYS_MACB_RX_RING_SIZE) { |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 284 | wrapped = 1; |
| 285 | rx_tail = 0; |
| 286 | } |
| 287 | } |
Haavard Skinnemoen | 996e147 | 2007-05-02 13:22:38 +0200 | [diff] [blame] | 288 | barrier(); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 289 | } |
| 290 | |
| 291 | return 0; |
| 292 | } |
| 293 | |
Haavard Skinnemoen | b3ad772 | 2007-05-02 13:31:53 +0200 | [diff] [blame] | 294 | static void macb_phy_reset(struct macb_device *macb) |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 295 | { |
| 296 | struct eth_device *netdev = &macb->netdev; |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 297 | int i; |
Haavard Skinnemoen | b3ad772 | 2007-05-02 13:31:53 +0200 | [diff] [blame] | 298 | u16 status, adv; |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 299 | |
| 300 | adv = ADVERTISE_CSMA | ADVERTISE_ALL; |
| 301 | macb_mdio_write(macb, MII_ADVERTISE, adv); |
| 302 | printf("%s: Starting autonegotiation...\n", netdev->name); |
| 303 | macb_mdio_write(macb, MII_BMCR, (BMCR_ANENABLE |
| 304 | | BMCR_ANRESTART)); |
| 305 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 306 | for (i = 0; i < CONFIG_SYS_MACB_AUTONEG_TIMEOUT / 100; i++) { |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 307 | status = macb_mdio_read(macb, MII_BMSR); |
| 308 | if (status & BMSR_ANEGCOMPLETE) |
| 309 | break; |
| 310 | udelay(100); |
| 311 | } |
| 312 | |
| 313 | if (status & BMSR_ANEGCOMPLETE) |
| 314 | printf("%s: Autonegotiation complete\n", netdev->name); |
| 315 | else |
| 316 | printf("%s: Autonegotiation timed out (status=0x%04x)\n", |
| 317 | netdev->name, status); |
Haavard Skinnemoen | b3ad772 | 2007-05-02 13:31:53 +0200 | [diff] [blame] | 318 | } |
| 319 | |
Gunnar Rangoy | 6dd74f3 | 2009-01-23 12:56:31 +0100 | [diff] [blame^] | 320 | #ifdef CONFIG_MACB_SEARCH_PHY |
| 321 | static int macb_phy_find(struct macb_device *macb) |
| 322 | { |
| 323 | int i; |
| 324 | u16 phy_id; |
| 325 | |
| 326 | /* Search for PHY... */ |
| 327 | for (i = 0; i < 32; i++) { |
| 328 | macb->phy_addr = i; |
| 329 | phy_id = macb_mdio_read(macb, MII_PHYSID1); |
| 330 | if (phy_id != 0xffff) { |
| 331 | printf("%s: PHY present at %d\n", macb->netdev.name, i); |
| 332 | return 1; |
| 333 | } |
| 334 | } |
| 335 | |
| 336 | /* PHY isn't up to snuff */ |
| 337 | printf("%s: PHY not found", macb->netdev.name); |
| 338 | |
| 339 | return 0; |
| 340 | } |
| 341 | #endif /* CONFIG_MACB_SEARCH_PHY */ |
| 342 | |
| 343 | |
Haavard Skinnemoen | b3ad772 | 2007-05-02 13:31:53 +0200 | [diff] [blame] | 344 | static int macb_phy_init(struct macb_device *macb) |
| 345 | { |
| 346 | struct eth_device *netdev = &macb->netdev; |
| 347 | u32 ncfgr; |
| 348 | u16 phy_id, status, adv, lpa; |
| 349 | int media, speed, duplex; |
| 350 | int i; |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 351 | |
Gunnar Rangoy | 6dd74f3 | 2009-01-23 12:56:31 +0100 | [diff] [blame^] | 352 | #ifdef CONFIG_MACB_SEARCH_PHY |
| 353 | /* Auto-detect phy_addr */ |
| 354 | if (!macb_phy_find(macb)) { |
| 355 | return 0; |
| 356 | } |
| 357 | #endif /* CONFIG_MACB_SEARCH_PHY */ |
| 358 | |
Haavard Skinnemoen | b3ad772 | 2007-05-02 13:31:53 +0200 | [diff] [blame] | 359 | /* Check if the PHY is up to snuff... */ |
| 360 | phy_id = macb_mdio_read(macb, MII_PHYSID1); |
| 361 | if (phy_id == 0xffff) { |
| 362 | printf("%s: No PHY present\n", netdev->name); |
| 363 | return 0; |
| 364 | } |
| 365 | |
| 366 | status = macb_mdio_read(macb, MII_BMSR); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 367 | if (!(status & BMSR_LSTATUS)) { |
Haavard Skinnemoen | b3ad772 | 2007-05-02 13:31:53 +0200 | [diff] [blame] | 368 | /* Try to re-negotiate if we don't have link already. */ |
| 369 | macb_phy_reset(macb); |
| 370 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 371 | for (i = 0; i < CONFIG_SYS_MACB_AUTONEG_TIMEOUT / 100; i++) { |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 372 | status = macb_mdio_read(macb, MII_BMSR); |
| 373 | if (status & BMSR_LSTATUS) |
| 374 | break; |
Haavard Skinnemoen | b3ad772 | 2007-05-02 13:31:53 +0200 | [diff] [blame] | 375 | udelay(100); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 376 | } |
| 377 | } |
| 378 | |
| 379 | if (!(status & BMSR_LSTATUS)) { |
| 380 | printf("%s: link down (status: 0x%04x)\n", |
| 381 | netdev->name, status); |
| 382 | return 0; |
| 383 | } else { |
Haavard Skinnemoen | b3ad772 | 2007-05-02 13:31:53 +0200 | [diff] [blame] | 384 | adv = macb_mdio_read(macb, MII_ADVERTISE); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 385 | lpa = macb_mdio_read(macb, MII_LPA); |
| 386 | media = mii_nway_result(lpa & adv); |
| 387 | speed = (media & (ADVERTISE_100FULL | ADVERTISE_100HALF) |
| 388 | ? 1 : 0); |
| 389 | duplex = (media & ADVERTISE_FULL) ? 1 : 0; |
| 390 | printf("%s: link up, %sMbps %s-duplex (lpa: 0x%04x)\n", |
| 391 | netdev->name, |
| 392 | speed ? "100" : "10", |
| 393 | duplex ? "full" : "half", |
| 394 | lpa); |
| 395 | |
| 396 | ncfgr = macb_readl(macb, NCFGR); |
| 397 | ncfgr &= ~(MACB_BIT(SPD) | MACB_BIT(FD)); |
| 398 | if (speed) |
| 399 | ncfgr |= MACB_BIT(SPD); |
| 400 | if (duplex) |
| 401 | ncfgr |= MACB_BIT(FD); |
| 402 | macb_writel(macb, NCFGR, ncfgr); |
| 403 | return 1; |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | static int macb_init(struct eth_device *netdev, bd_t *bd) |
| 408 | { |
| 409 | struct macb_device *macb = to_macb(netdev); |
| 410 | unsigned long paddr; |
| 411 | u32 hwaddr_bottom; |
| 412 | u16 hwaddr_top; |
| 413 | int i; |
| 414 | |
| 415 | /* |
| 416 | * macb_halt should have been called at some point before now, |
| 417 | * so we'll assume the controller is idle. |
| 418 | */ |
| 419 | |
| 420 | /* initialize DMA descriptors */ |
| 421 | paddr = macb->rx_buffer_dma; |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 422 | for (i = 0; i < CONFIG_SYS_MACB_RX_RING_SIZE; i++) { |
| 423 | if (i == (CONFIG_SYS_MACB_RX_RING_SIZE - 1)) |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 424 | paddr |= RXADDR_WRAP; |
| 425 | macb->rx_ring[i].addr = paddr; |
| 426 | macb->rx_ring[i].ctrl = 0; |
| 427 | paddr += 128; |
| 428 | } |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 429 | for (i = 0; i < CONFIG_SYS_MACB_TX_RING_SIZE; i++) { |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 430 | macb->tx_ring[i].addr = 0; |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 431 | if (i == (CONFIG_SYS_MACB_TX_RING_SIZE - 1)) |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 432 | macb->tx_ring[i].ctrl = TXBUF_USED | TXBUF_WRAP; |
| 433 | else |
| 434 | macb->tx_ring[i].ctrl = TXBUF_USED; |
| 435 | } |
| 436 | macb->rx_tail = macb->tx_head = macb->tx_tail = 0; |
| 437 | |
| 438 | macb_writel(macb, RBQP, macb->rx_ring_dma); |
| 439 | macb_writel(macb, TBQP, macb->tx_ring_dma); |
| 440 | |
| 441 | /* set hardware address */ |
| 442 | hwaddr_bottom = cpu_to_le32(*((u32 *)netdev->enetaddr)); |
| 443 | macb_writel(macb, SA1B, hwaddr_bottom); |
| 444 | hwaddr_top = cpu_to_le16(*((u16 *)(netdev->enetaddr + 4))); |
| 445 | macb_writel(macb, SA1T, hwaddr_top); |
| 446 | |
| 447 | /* choose RMII or MII mode. This depends on the board */ |
| 448 | #ifdef CONFIG_RMII |
Stelian Pop | 69c925f | 2008-05-08 18:52:23 +0200 | [diff] [blame] | 449 | #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \ |
| 450 | defined(CONFIG_AT91SAM9263) |
Stelian Pop | 87a8254 | 2008-01-03 21:15:56 +0000 | [diff] [blame] | 451 | macb_writel(macb, USRIO, MACB_BIT(RMII) | MACB_BIT(CLKEN)); |
| 452 | #else |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 453 | macb_writel(macb, USRIO, 0); |
Stelian Pop | 87a8254 | 2008-01-03 21:15:56 +0000 | [diff] [blame] | 454 | #endif |
| 455 | #else |
Stelian Pop | 69c925f | 2008-05-08 18:52:23 +0200 | [diff] [blame] | 456 | #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \ |
| 457 | defined(CONFIG_AT91SAM9263) |
Stelian Pop | 87a8254 | 2008-01-03 21:15:56 +0000 | [diff] [blame] | 458 | macb_writel(macb, USRIO, MACB_BIT(CLKEN)); |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 459 | #else |
| 460 | macb_writel(macb, USRIO, MACB_BIT(MII)); |
| 461 | #endif |
Stelian Pop | 87a8254 | 2008-01-03 21:15:56 +0000 | [diff] [blame] | 462 | #endif /* CONFIG_RMII */ |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 463 | |
| 464 | if (!macb_phy_init(macb)) |
Ben Warren | de9fcb5 | 2008-01-09 18:15:53 -0500 | [diff] [blame] | 465 | return -1; |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 466 | |
| 467 | /* Enable TX and RX */ |
| 468 | macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE)); |
| 469 | |
Ben Warren | de9fcb5 | 2008-01-09 18:15:53 -0500 | [diff] [blame] | 470 | return 0; |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 471 | } |
| 472 | |
| 473 | static void macb_halt(struct eth_device *netdev) |
| 474 | { |
| 475 | struct macb_device *macb = to_macb(netdev); |
| 476 | u32 ncr, tsr; |
| 477 | |
| 478 | /* Halt the controller and wait for any ongoing transmission to end. */ |
| 479 | ncr = macb_readl(macb, NCR); |
| 480 | ncr |= MACB_BIT(THALT); |
| 481 | macb_writel(macb, NCR, ncr); |
| 482 | |
| 483 | do { |
| 484 | tsr = macb_readl(macb, TSR); |
| 485 | } while (tsr & MACB_BIT(TGO)); |
| 486 | |
| 487 | /* Disable TX and RX, and clear statistics */ |
| 488 | macb_writel(macb, NCR, MACB_BIT(CLRSTAT)); |
| 489 | } |
| 490 | |
| 491 | int macb_eth_initialize(int id, void *regs, unsigned int phy_addr) |
| 492 | { |
| 493 | struct macb_device *macb; |
| 494 | struct eth_device *netdev; |
| 495 | unsigned long macb_hz; |
| 496 | u32 ncfgr; |
| 497 | |
| 498 | macb = malloc(sizeof(struct macb_device)); |
| 499 | if (!macb) { |
| 500 | printf("Error: Failed to allocate memory for MACB%d\n", id); |
| 501 | return -1; |
| 502 | } |
| 503 | memset(macb, 0, sizeof(struct macb_device)); |
| 504 | |
| 505 | netdev = &macb->netdev; |
| 506 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 507 | macb->rx_buffer = dma_alloc_coherent(CONFIG_SYS_MACB_RX_BUFFER_SIZE, |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 508 | &macb->rx_buffer_dma); |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 509 | macb->rx_ring = dma_alloc_coherent(CONFIG_SYS_MACB_RX_RING_SIZE |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 510 | * sizeof(struct macb_dma_desc), |
| 511 | &macb->rx_ring_dma); |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 512 | macb->tx_ring = dma_alloc_coherent(CONFIG_SYS_MACB_TX_RING_SIZE |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 513 | * sizeof(struct macb_dma_desc), |
| 514 | &macb->tx_ring_dma); |
| 515 | |
| 516 | macb->regs = regs; |
| 517 | macb->phy_addr = phy_addr; |
| 518 | |
| 519 | sprintf(netdev->name, "macb%d", id); |
| 520 | netdev->init = macb_init; |
| 521 | netdev->halt = macb_halt; |
| 522 | netdev->send = macb_send; |
| 523 | netdev->recv = macb_recv; |
| 524 | |
| 525 | /* |
| 526 | * Do some basic initialization so that we at least can talk |
| 527 | * to the PHY |
| 528 | */ |
| 529 | macb_hz = get_macb_pclk_rate(id); |
| 530 | if (macb_hz < 20000000) |
| 531 | ncfgr = MACB_BF(CLK, MACB_CLK_DIV8); |
| 532 | else if (macb_hz < 40000000) |
| 533 | ncfgr = MACB_BF(CLK, MACB_CLK_DIV16); |
| 534 | else if (macb_hz < 80000000) |
| 535 | ncfgr = MACB_BF(CLK, MACB_CLK_DIV32); |
| 536 | else |
| 537 | ncfgr = MACB_BF(CLK, MACB_CLK_DIV64); |
| 538 | |
| 539 | macb_writel(macb, NCFGR, ncfgr); |
| 540 | |
| 541 | eth_register(netdev); |
| 542 | |
| 543 | return 0; |
| 544 | } |
| 545 | |
Jon Loeliger | b1d408a | 2007-07-09 17:30:01 -0500 | [diff] [blame] | 546 | #endif |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 547 | |
Jon Loeliger | b1d408a | 2007-07-09 17:30:01 -0500 | [diff] [blame] | 548 | #if defined(CONFIG_CMD_MII) |
Haavard Skinnemoen | 51c8f24 | 2006-01-20 10:03:34 +0100 | [diff] [blame] | 549 | |
| 550 | int miiphy_read(unsigned char addr, unsigned char reg, unsigned short *value) |
| 551 | { |
| 552 | unsigned long netctl; |
| 553 | unsigned long netstat; |
| 554 | unsigned long frame; |
| 555 | int iflag; |
| 556 | |
| 557 | iflag = disable_interrupts(); |
| 558 | netctl = macb_readl(&macb, EMACB_NCR); |
| 559 | netctl |= MACB_BIT(MPE); |
| 560 | macb_writel(&macb, EMACB_NCR, netctl); |
| 561 | if (iflag) |
| 562 | enable_interrupts(); |
| 563 | |
| 564 | frame = (MACB_BF(SOF, 1) |
| 565 | | MACB_BF(RW, 2) |
| 566 | | MACB_BF(PHYA, addr) |
| 567 | | MACB_BF(REGA, reg) |
| 568 | | MACB_BF(CODE, 2)); |
| 569 | macb_writel(&macb, EMACB_MAN, frame); |
| 570 | |
| 571 | do { |
| 572 | netstat = macb_readl(&macb, EMACB_NSR); |
| 573 | } while (!(netstat & MACB_BIT(IDLE))); |
| 574 | |
| 575 | frame = macb_readl(&macb, EMACB_MAN); |
| 576 | *value = MACB_BFEXT(DATA, frame); |
| 577 | |
| 578 | iflag = disable_interrupts(); |
| 579 | netctl = macb_readl(&macb, EMACB_NCR); |
| 580 | netctl &= ~MACB_BIT(MPE); |
| 581 | macb_writel(&macb, EMACB_NCR, netctl); |
| 582 | if (iflag) |
| 583 | enable_interrupts(); |
| 584 | |
| 585 | return 0; |
| 586 | } |
| 587 | |
| 588 | int miiphy_write(unsigned char addr, unsigned char reg, unsigned short value) |
| 589 | { |
| 590 | unsigned long netctl; |
| 591 | unsigned long netstat; |
| 592 | unsigned long frame; |
| 593 | int iflag; |
| 594 | |
| 595 | iflag = disable_interrupts(); |
| 596 | netctl = macb_readl(&macb, EMACB_NCR); |
| 597 | netctl |= MACB_BIT(MPE); |
| 598 | macb_writel(&macb, EMACB_NCR, netctl); |
| 599 | if (iflag) |
| 600 | enable_interrupts(); |
| 601 | |
| 602 | frame = (MACB_BF(SOF, 1) |
| 603 | | MACB_BF(RW, 1) |
| 604 | | MACB_BF(PHYA, addr) |
| 605 | | MACB_BF(REGA, reg) |
| 606 | | MACB_BF(CODE, 2) |
| 607 | | MACB_BF(DATA, value)); |
| 608 | macb_writel(&macb, EMACB_MAN, frame); |
| 609 | |
| 610 | do { |
| 611 | netstat = macb_readl(&macb, EMACB_NSR); |
| 612 | } while (!(netstat & MACB_BIT(IDLE))); |
| 613 | |
| 614 | iflag = disable_interrupts(); |
| 615 | netctl = macb_readl(&macb, EMACB_NCR); |
| 616 | netctl &= ~MACB_BIT(MPE); |
| 617 | macb_writel(&macb, EMACB_NCR, netctl); |
| 618 | if (iflag) |
| 619 | enable_interrupts(); |
| 620 | |
| 621 | return 0; |
| 622 | } |
| 623 | |
Jon Loeliger | b1d408a | 2007-07-09 17:30:01 -0500 | [diff] [blame] | 624 | #endif |