Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Combined Ethernet driver for Motorola MPC8xx and MPC82xx. |
| 3 | * |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 4 | * Copyright (c) 2003 Intracom S.A. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 5 | * by Pantelis Antoniou <panto@intracom.gr> |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 6 | * |
| 7 | * 2005 (c) MontaVista Software, Inc. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 8 | * Vitaly Bordug <vbordug@ru.mvista.com> |
| 9 | * |
| 10 | * Heavily based on original FEC driver by Dan Malek <dan@embeddededge.com> |
| 11 | * and modifications by Joakim Tjernlund <joakim.tjernlund@lumentis.se> |
| 12 | * |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 13 | * This file is licensed under the terms of the GNU General Public License |
| 14 | * version 2. This program is licensed "as is" without any warranty of any |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 15 | * kind, whether express or implied. |
| 16 | */ |
| 17 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 18 | #include <linux/module.h> |
| 19 | #include <linux/kernel.h> |
| 20 | #include <linux/types.h> |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 21 | #include <linux/string.h> |
| 22 | #include <linux/ptrace.h> |
| 23 | #include <linux/errno.h> |
| 24 | #include <linux/ioport.h> |
| 25 | #include <linux/slab.h> |
| 26 | #include <linux/interrupt.h> |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 27 | #include <linux/init.h> |
| 28 | #include <linux/delay.h> |
| 29 | #include <linux/netdevice.h> |
| 30 | #include <linux/etherdevice.h> |
| 31 | #include <linux/skbuff.h> |
| 32 | #include <linux/spinlock.h> |
| 33 | #include <linux/mii.h> |
| 34 | #include <linux/ethtool.h> |
| 35 | #include <linux/bitops.h> |
| 36 | #include <linux/fs.h> |
Marcelo Tosatti | f7b9996 | 2005-11-09 11:00:16 -0200 | [diff] [blame] | 37 | #include <linux/platform_device.h> |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 38 | #include <linux/phy.h> |
Kumar Gala | b219108 | 2008-06-12 08:32:13 -0500 | [diff] [blame] | 39 | #include <linux/of_platform.h> |
Benjamin Herrenschmidt | 8725f25 | 2008-07-22 17:12:37 +1000 | [diff] [blame] | 40 | #include <linux/of_gpio.h> |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 41 | |
| 42 | #include <linux/vmalloc.h> |
| 43 | #include <asm/pgtable.h> |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 44 | #include <asm/irq.h> |
| 45 | #include <asm/uaccess.h> |
| 46 | |
| 47 | #include "fs_enet.h" |
| 48 | |
| 49 | /*************************************************/ |
| 50 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 51 | MODULE_AUTHOR("Pantelis Antoniou <panto@intracom.gr>"); |
| 52 | MODULE_DESCRIPTION("Freescale Ethernet Driver"); |
| 53 | MODULE_LICENSE("GPL"); |
| 54 | MODULE_VERSION(DRV_MODULE_VERSION); |
| 55 | |
Scott Wood | 31a5bb0 | 2007-10-01 14:20:58 -0500 | [diff] [blame] | 56 | static int fs_enet_debug = -1; /* -1 == use FS_ENET_DEF_MSG_ENABLE as value */ |
Rusty Russell | 8d3b33f | 2006-03-25 03:07:05 -0800 | [diff] [blame] | 57 | module_param(fs_enet_debug, int, 0); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 58 | MODULE_PARM_DESC(fs_enet_debug, |
| 59 | "Freescale bitmapped debugging message enable value"); |
| 60 | |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 61 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 62 | static void fs_enet_netpoll(struct net_device *dev); |
| 63 | #endif |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 64 | |
| 65 | static void fs_set_multicast_list(struct net_device *dev) |
| 66 | { |
| 67 | struct fs_enet_private *fep = netdev_priv(dev); |
| 68 | |
| 69 | (*fep->ops->set_multicast_list)(dev); |
| 70 | } |
| 71 | |
Scott Wood | 0d0d9c1 | 2007-10-01 14:20:52 -0500 | [diff] [blame] | 72 | static void skb_align(struct sk_buff *skb, int align) |
| 73 | { |
| 74 | int off = ((unsigned long)skb->data) & (align - 1); |
| 75 | |
| 76 | if (off) |
| 77 | skb_reserve(skb, align - off); |
| 78 | } |
| 79 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 80 | /* NAPI receive function */ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 81 | static int fs_enet_rx_napi(struct napi_struct *napi, int budget) |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 82 | { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 83 | struct fs_enet_private *fep = container_of(napi, struct fs_enet_private, napi); |
Scott Wood | f860f49 | 2007-10-17 12:42:43 -0500 | [diff] [blame] | 84 | struct net_device *dev = fep->ndev; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 85 | const struct fs_platform_info *fpi = fep->fpi; |
Scott Wood | 31a5bb0 | 2007-10-01 14:20:58 -0500 | [diff] [blame] | 86 | cbd_t __iomem *bdp; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 87 | struct sk_buff *skb, *skbn, *skbt; |
| 88 | int received = 0; |
| 89 | u16 pkt_len, sc; |
| 90 | int curidx; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 91 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 92 | /* |
| 93 | * First, grab all of the stats for the incoming packet. |
| 94 | * These get messed up if we get called due to a busy condition. |
| 95 | */ |
| 96 | bdp = fep->cur_rx; |
| 97 | |
| 98 | /* clear RX status bits for napi*/ |
| 99 | (*fep->ops->napi_clear_rx_event)(dev); |
| 100 | |
| 101 | while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 102 | curidx = bdp - fep->rx_bd_base; |
| 103 | |
| 104 | /* |
| 105 | * Since we have allocated space to hold a complete frame, |
| 106 | * the last indicator should be set. |
| 107 | */ |
| 108 | if ((sc & BD_ENET_RX_LAST) == 0) |
| 109 | printk(KERN_WARNING DRV_MODULE_NAME |
| 110 | ": %s rcv is not +last\n", |
| 111 | dev->name); |
| 112 | |
| 113 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 114 | * Check for errors. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 115 | */ |
| 116 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL | |
| 117 | BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) { |
| 118 | fep->stats.rx_errors++; |
| 119 | /* Frame too long or too short. */ |
| 120 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH)) |
| 121 | fep->stats.rx_length_errors++; |
| 122 | /* Frame alignment */ |
| 123 | if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL)) |
| 124 | fep->stats.rx_frame_errors++; |
| 125 | /* CRC Error */ |
| 126 | if (sc & BD_ENET_RX_CR) |
| 127 | fep->stats.rx_crc_errors++; |
| 128 | /* FIFO overrun */ |
| 129 | if (sc & BD_ENET_RX_OV) |
| 130 | fep->stats.rx_crc_errors++; |
| 131 | |
| 132 | skb = fep->rx_skbuff[curidx]; |
| 133 | |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 134 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 135 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
| 136 | DMA_FROM_DEVICE); |
| 137 | |
| 138 | skbn = skb; |
| 139 | |
| 140 | } else { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 141 | skb = fep->rx_skbuff[curidx]; |
| 142 | |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 143 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 144 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
| 145 | DMA_FROM_DEVICE); |
| 146 | |
| 147 | /* |
| 148 | * Process the incoming frame. |
| 149 | */ |
| 150 | fep->stats.rx_packets++; |
| 151 | pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */ |
| 152 | fep->stats.rx_bytes += pkt_len + 4; |
| 153 | |
| 154 | if (pkt_len <= fpi->rx_copybreak) { |
| 155 | /* +2 to make IP header L1 cache aligned */ |
| 156 | skbn = dev_alloc_skb(pkt_len + 2); |
| 157 | if (skbn != NULL) { |
| 158 | skb_reserve(skbn, 2); /* align IP header */ |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 159 | skb_copy_from_linear_data(skb, |
| 160 | skbn->data, pkt_len); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 161 | /* swap */ |
| 162 | skbt = skb; |
| 163 | skb = skbn; |
| 164 | skbn = skbt; |
| 165 | } |
Scott Wood | 0d0d9c1 | 2007-10-01 14:20:52 -0500 | [diff] [blame] | 166 | } else { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 167 | skbn = dev_alloc_skb(ENET_RX_FRSIZE); |
| 168 | |
Scott Wood | 0d0d9c1 | 2007-10-01 14:20:52 -0500 | [diff] [blame] | 169 | if (skbn) |
| 170 | skb_align(skbn, ENET_RX_ALIGN); |
| 171 | } |
| 172 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 173 | if (skbn != NULL) { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 174 | skb_put(skb, pkt_len); /* Make room */ |
| 175 | skb->protocol = eth_type_trans(skb, dev); |
| 176 | received++; |
| 177 | netif_receive_skb(skb); |
| 178 | } else { |
| 179 | printk(KERN_WARNING DRV_MODULE_NAME |
| 180 | ": %s Memory squeeze, dropping packet.\n", |
| 181 | dev->name); |
| 182 | fep->stats.rx_dropped++; |
| 183 | skbn = skb; |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | fep->rx_skbuff[curidx] = skbn; |
| 188 | CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data, |
| 189 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
| 190 | DMA_FROM_DEVICE)); |
| 191 | CBDW_DATLEN(bdp, 0); |
| 192 | CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY); |
| 193 | |
| 194 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 195 | * Update BD pointer to next entry. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 196 | */ |
| 197 | if ((sc & BD_ENET_RX_WRAP) == 0) |
| 198 | bdp++; |
| 199 | else |
| 200 | bdp = fep->rx_bd_base; |
| 201 | |
| 202 | (*fep->ops->rx_bd_done)(dev); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 203 | |
| 204 | if (received >= budget) |
| 205 | break; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 206 | } |
| 207 | |
| 208 | fep->cur_rx = bdp; |
| 209 | |
Scott Wood | f860f49 | 2007-10-17 12:42:43 -0500 | [diff] [blame] | 210 | if (received < budget) { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 211 | /* done */ |
| 212 | netif_rx_complete(dev, napi); |
| 213 | (*fep->ops->napi_enable_rx)(dev); |
| 214 | } |
| 215 | return received; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 216 | } |
| 217 | |
| 218 | /* non NAPI receive function */ |
| 219 | static int fs_enet_rx_non_napi(struct net_device *dev) |
| 220 | { |
| 221 | struct fs_enet_private *fep = netdev_priv(dev); |
| 222 | const struct fs_platform_info *fpi = fep->fpi; |
Scott Wood | 31a5bb0 | 2007-10-01 14:20:58 -0500 | [diff] [blame] | 223 | cbd_t __iomem *bdp; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 224 | struct sk_buff *skb, *skbn, *skbt; |
| 225 | int received = 0; |
| 226 | u16 pkt_len, sc; |
| 227 | int curidx; |
| 228 | /* |
| 229 | * First, grab all of the stats for the incoming packet. |
| 230 | * These get messed up if we get called due to a busy condition. |
| 231 | */ |
| 232 | bdp = fep->cur_rx; |
| 233 | |
| 234 | while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) { |
| 235 | |
| 236 | curidx = bdp - fep->rx_bd_base; |
| 237 | |
| 238 | /* |
| 239 | * Since we have allocated space to hold a complete frame, |
| 240 | * the last indicator should be set. |
| 241 | */ |
| 242 | if ((sc & BD_ENET_RX_LAST) == 0) |
| 243 | printk(KERN_WARNING DRV_MODULE_NAME |
| 244 | ": %s rcv is not +last\n", |
| 245 | dev->name); |
| 246 | |
| 247 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 248 | * Check for errors. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 249 | */ |
| 250 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL | |
| 251 | BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) { |
| 252 | fep->stats.rx_errors++; |
| 253 | /* Frame too long or too short. */ |
| 254 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH)) |
| 255 | fep->stats.rx_length_errors++; |
| 256 | /* Frame alignment */ |
| 257 | if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL)) |
| 258 | fep->stats.rx_frame_errors++; |
| 259 | /* CRC Error */ |
| 260 | if (sc & BD_ENET_RX_CR) |
| 261 | fep->stats.rx_crc_errors++; |
| 262 | /* FIFO overrun */ |
| 263 | if (sc & BD_ENET_RX_OV) |
| 264 | fep->stats.rx_crc_errors++; |
| 265 | |
| 266 | skb = fep->rx_skbuff[curidx]; |
| 267 | |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 268 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 269 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
| 270 | DMA_FROM_DEVICE); |
| 271 | |
| 272 | skbn = skb; |
| 273 | |
| 274 | } else { |
| 275 | |
| 276 | skb = fep->rx_skbuff[curidx]; |
| 277 | |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 278 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 279 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
| 280 | DMA_FROM_DEVICE); |
| 281 | |
| 282 | /* |
| 283 | * Process the incoming frame. |
| 284 | */ |
| 285 | fep->stats.rx_packets++; |
| 286 | pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */ |
| 287 | fep->stats.rx_bytes += pkt_len + 4; |
| 288 | |
| 289 | if (pkt_len <= fpi->rx_copybreak) { |
| 290 | /* +2 to make IP header L1 cache aligned */ |
| 291 | skbn = dev_alloc_skb(pkt_len + 2); |
| 292 | if (skbn != NULL) { |
| 293 | skb_reserve(skbn, 2); /* align IP header */ |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 294 | skb_copy_from_linear_data(skb, |
| 295 | skbn->data, pkt_len); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 296 | /* swap */ |
| 297 | skbt = skb; |
| 298 | skb = skbn; |
| 299 | skbn = skbt; |
| 300 | } |
Scott Wood | 0d0d9c1 | 2007-10-01 14:20:52 -0500 | [diff] [blame] | 301 | } else { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 302 | skbn = dev_alloc_skb(ENET_RX_FRSIZE); |
| 303 | |
Scott Wood | 0d0d9c1 | 2007-10-01 14:20:52 -0500 | [diff] [blame] | 304 | if (skbn) |
| 305 | skb_align(skbn, ENET_RX_ALIGN); |
| 306 | } |
| 307 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 308 | if (skbn != NULL) { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 309 | skb_put(skb, pkt_len); /* Make room */ |
| 310 | skb->protocol = eth_type_trans(skb, dev); |
| 311 | received++; |
| 312 | netif_rx(skb); |
| 313 | } else { |
| 314 | printk(KERN_WARNING DRV_MODULE_NAME |
| 315 | ": %s Memory squeeze, dropping packet.\n", |
| 316 | dev->name); |
| 317 | fep->stats.rx_dropped++; |
| 318 | skbn = skb; |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | fep->rx_skbuff[curidx] = skbn; |
| 323 | CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data, |
| 324 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
| 325 | DMA_FROM_DEVICE)); |
| 326 | CBDW_DATLEN(bdp, 0); |
| 327 | CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY); |
| 328 | |
| 329 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 330 | * Update BD pointer to next entry. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 331 | */ |
| 332 | if ((sc & BD_ENET_RX_WRAP) == 0) |
| 333 | bdp++; |
| 334 | else |
| 335 | bdp = fep->rx_bd_base; |
| 336 | |
| 337 | (*fep->ops->rx_bd_done)(dev); |
| 338 | } |
| 339 | |
| 340 | fep->cur_rx = bdp; |
| 341 | |
| 342 | return 0; |
| 343 | } |
| 344 | |
| 345 | static void fs_enet_tx(struct net_device *dev) |
| 346 | { |
| 347 | struct fs_enet_private *fep = netdev_priv(dev); |
Scott Wood | 31a5bb0 | 2007-10-01 14:20:58 -0500 | [diff] [blame] | 348 | cbd_t __iomem *bdp; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 349 | struct sk_buff *skb; |
| 350 | int dirtyidx, do_wake, do_restart; |
| 351 | u16 sc; |
| 352 | |
Vitaly Bordug | aa90f50 | 2007-09-18 20:05:27 +0400 | [diff] [blame] | 353 | spin_lock(&fep->tx_lock); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 354 | bdp = fep->dirty_tx; |
| 355 | |
| 356 | do_wake = do_restart = 0; |
| 357 | while (((sc = CBDR_SC(bdp)) & BD_ENET_TX_READY) == 0) { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 358 | dirtyidx = bdp - fep->tx_bd_base; |
| 359 | |
| 360 | if (fep->tx_free == fep->tx_ring) |
| 361 | break; |
| 362 | |
| 363 | skb = fep->tx_skbuff[dirtyidx]; |
| 364 | |
| 365 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 366 | * Check for errors. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 367 | */ |
| 368 | if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC | |
| 369 | BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) { |
| 370 | |
| 371 | if (sc & BD_ENET_TX_HB) /* No heartbeat */ |
| 372 | fep->stats.tx_heartbeat_errors++; |
| 373 | if (sc & BD_ENET_TX_LC) /* Late collision */ |
| 374 | fep->stats.tx_window_errors++; |
| 375 | if (sc & BD_ENET_TX_RL) /* Retrans limit */ |
| 376 | fep->stats.tx_aborted_errors++; |
| 377 | if (sc & BD_ENET_TX_UN) /* Underrun */ |
| 378 | fep->stats.tx_fifo_errors++; |
| 379 | if (sc & BD_ENET_TX_CSL) /* Carrier lost */ |
| 380 | fep->stats.tx_carrier_errors++; |
| 381 | |
| 382 | if (sc & (BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) { |
| 383 | fep->stats.tx_errors++; |
| 384 | do_restart = 1; |
| 385 | } |
| 386 | } else |
| 387 | fep->stats.tx_packets++; |
| 388 | |
| 389 | if (sc & BD_ENET_TX_READY) |
| 390 | printk(KERN_WARNING DRV_MODULE_NAME |
| 391 | ": %s HEY! Enet xmit interrupt and TX_READY.\n", |
| 392 | dev->name); |
| 393 | |
| 394 | /* |
| 395 | * Deferred means some collisions occurred during transmit, |
| 396 | * but we eventually sent the packet OK. |
| 397 | */ |
| 398 | if (sc & BD_ENET_TX_DEF) |
| 399 | fep->stats.collisions++; |
| 400 | |
| 401 | /* unmap */ |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 402 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
| 403 | skb->len, DMA_TO_DEVICE); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 404 | |
| 405 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 406 | * Free the sk buffer associated with this last transmit. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 407 | */ |
| 408 | dev_kfree_skb_irq(skb); |
| 409 | fep->tx_skbuff[dirtyidx] = NULL; |
| 410 | |
| 411 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 412 | * Update pointer to next buffer descriptor to be transmitted. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 413 | */ |
| 414 | if ((sc & BD_ENET_TX_WRAP) == 0) |
| 415 | bdp++; |
| 416 | else |
| 417 | bdp = fep->tx_bd_base; |
| 418 | |
| 419 | /* |
| 420 | * Since we have freed up a buffer, the ring is no longer |
| 421 | * full. |
| 422 | */ |
| 423 | if (!fep->tx_free++) |
| 424 | do_wake = 1; |
| 425 | } |
| 426 | |
| 427 | fep->dirty_tx = bdp; |
| 428 | |
| 429 | if (do_restart) |
| 430 | (*fep->ops->tx_restart)(dev); |
| 431 | |
Vitaly Bordug | aa90f50 | 2007-09-18 20:05:27 +0400 | [diff] [blame] | 432 | spin_unlock(&fep->tx_lock); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 433 | |
| 434 | if (do_wake) |
| 435 | netif_wake_queue(dev); |
| 436 | } |
| 437 | |
| 438 | /* |
| 439 | * The interrupt handler. |
| 440 | * This is called from the MPC core interrupt. |
| 441 | */ |
| 442 | static irqreturn_t |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 443 | fs_enet_interrupt(int irq, void *dev_id) |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 444 | { |
| 445 | struct net_device *dev = dev_id; |
| 446 | struct fs_enet_private *fep; |
| 447 | const struct fs_platform_info *fpi; |
| 448 | u32 int_events; |
| 449 | u32 int_clr_events; |
| 450 | int nr, napi_ok; |
| 451 | int handled; |
| 452 | |
| 453 | fep = netdev_priv(dev); |
| 454 | fpi = fep->fpi; |
| 455 | |
| 456 | nr = 0; |
| 457 | while ((int_events = (*fep->ops->get_int_events)(dev)) != 0) { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 458 | nr++; |
| 459 | |
| 460 | int_clr_events = int_events; |
| 461 | if (fpi->use_napi) |
| 462 | int_clr_events &= ~fep->ev_napi_rx; |
| 463 | |
| 464 | (*fep->ops->clear_int_events)(dev, int_clr_events); |
| 465 | |
| 466 | if (int_events & fep->ev_err) |
| 467 | (*fep->ops->ev_error)(dev, int_events); |
| 468 | |
| 469 | if (int_events & fep->ev_rx) { |
| 470 | if (!fpi->use_napi) |
| 471 | fs_enet_rx_non_napi(dev); |
| 472 | else { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 473 | napi_ok = napi_schedule_prep(&fep->napi); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 474 | |
| 475 | (*fep->ops->napi_disable_rx)(dev); |
| 476 | (*fep->ops->clear_int_events)(dev, fep->ev_napi_rx); |
| 477 | |
| 478 | /* NOTE: it is possible for FCCs in NAPI mode */ |
| 479 | /* to submit a spurious interrupt while in poll */ |
| 480 | if (napi_ok) |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 481 | __netif_rx_schedule(dev, &fep->napi); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 482 | } |
| 483 | } |
| 484 | |
| 485 | if (int_events & fep->ev_tx) |
| 486 | fs_enet_tx(dev); |
| 487 | } |
| 488 | |
| 489 | handled = nr > 0; |
| 490 | return IRQ_RETVAL(handled); |
| 491 | } |
| 492 | |
| 493 | void fs_init_bds(struct net_device *dev) |
| 494 | { |
| 495 | struct fs_enet_private *fep = netdev_priv(dev); |
Scott Wood | 31a5bb0 | 2007-10-01 14:20:58 -0500 | [diff] [blame] | 496 | cbd_t __iomem *bdp; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 497 | struct sk_buff *skb; |
| 498 | int i; |
| 499 | |
| 500 | fs_cleanup_bds(dev); |
| 501 | |
| 502 | fep->dirty_tx = fep->cur_tx = fep->tx_bd_base; |
| 503 | fep->tx_free = fep->tx_ring; |
| 504 | fep->cur_rx = fep->rx_bd_base; |
| 505 | |
| 506 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 507 | * Initialize the receive buffer descriptors. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 508 | */ |
| 509 | for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) { |
| 510 | skb = dev_alloc_skb(ENET_RX_FRSIZE); |
| 511 | if (skb == NULL) { |
| 512 | printk(KERN_WARNING DRV_MODULE_NAME |
| 513 | ": %s Memory squeeze, unable to allocate skb\n", |
| 514 | dev->name); |
| 515 | break; |
| 516 | } |
Scott Wood | 0d0d9c1 | 2007-10-01 14:20:52 -0500 | [diff] [blame] | 517 | skb_align(skb, ENET_RX_ALIGN); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 518 | fep->rx_skbuff[i] = skb; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 519 | CBDW_BUFADDR(bdp, |
| 520 | dma_map_single(fep->dev, skb->data, |
| 521 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
| 522 | DMA_FROM_DEVICE)); |
| 523 | CBDW_DATLEN(bdp, 0); /* zero */ |
| 524 | CBDW_SC(bdp, BD_ENET_RX_EMPTY | |
| 525 | ((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP)); |
| 526 | } |
| 527 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 528 | * if we failed, fillup remainder |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 529 | */ |
| 530 | for (; i < fep->rx_ring; i++, bdp++) { |
| 531 | fep->rx_skbuff[i] = NULL; |
| 532 | CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP); |
| 533 | } |
| 534 | |
| 535 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 536 | * ...and the same for transmit. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 537 | */ |
| 538 | for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) { |
| 539 | fep->tx_skbuff[i] = NULL; |
| 540 | CBDW_BUFADDR(bdp, 0); |
| 541 | CBDW_DATLEN(bdp, 0); |
| 542 | CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP); |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | void fs_cleanup_bds(struct net_device *dev) |
| 547 | { |
| 548 | struct fs_enet_private *fep = netdev_priv(dev); |
| 549 | struct sk_buff *skb; |
Scott Wood | 31a5bb0 | 2007-10-01 14:20:58 -0500 | [diff] [blame] | 550 | cbd_t __iomem *bdp; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 551 | int i; |
| 552 | |
| 553 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 554 | * Reset SKB transmit buffers. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 555 | */ |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 556 | for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 557 | if ((skb = fep->tx_skbuff[i]) == NULL) |
| 558 | continue; |
| 559 | |
| 560 | /* unmap */ |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 561 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
| 562 | skb->len, DMA_TO_DEVICE); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 563 | |
| 564 | fep->tx_skbuff[i] = NULL; |
| 565 | dev_kfree_skb(skb); |
| 566 | } |
| 567 | |
| 568 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 569 | * Reset SKB receive buffers |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 570 | */ |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 571 | for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 572 | if ((skb = fep->rx_skbuff[i]) == NULL) |
| 573 | continue; |
| 574 | |
| 575 | /* unmap */ |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 576 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 577 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
| 578 | DMA_FROM_DEVICE); |
| 579 | |
| 580 | fep->rx_skbuff[i] = NULL; |
| 581 | |
| 582 | dev_kfree_skb(skb); |
| 583 | } |
| 584 | } |
| 585 | |
| 586 | /**********************************************************************************/ |
| 587 | |
| 588 | static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 589 | { |
| 590 | struct fs_enet_private *fep = netdev_priv(dev); |
Scott Wood | 31a5bb0 | 2007-10-01 14:20:58 -0500 | [diff] [blame] | 591 | cbd_t __iomem *bdp; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 592 | int curidx; |
| 593 | u16 sc; |
| 594 | unsigned long flags; |
| 595 | |
| 596 | spin_lock_irqsave(&fep->tx_lock, flags); |
| 597 | |
| 598 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 599 | * Fill in a Tx ring entry |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 600 | */ |
| 601 | bdp = fep->cur_tx; |
| 602 | |
| 603 | if (!fep->tx_free || (CBDR_SC(bdp) & BD_ENET_TX_READY)) { |
| 604 | netif_stop_queue(dev); |
| 605 | spin_unlock_irqrestore(&fep->tx_lock, flags); |
| 606 | |
| 607 | /* |
| 608 | * Ooops. All transmit buffers are full. Bail out. |
| 609 | * This should not happen, since the tx queue should be stopped. |
| 610 | */ |
| 611 | printk(KERN_WARNING DRV_MODULE_NAME |
| 612 | ": %s tx queue full!.\n", dev->name); |
| 613 | return NETDEV_TX_BUSY; |
| 614 | } |
| 615 | |
| 616 | curidx = bdp - fep->tx_bd_base; |
| 617 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 618 | * Clear all of the status flags. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 619 | */ |
| 620 | CBDC_SC(bdp, BD_ENET_TX_STATS); |
| 621 | |
| 622 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 623 | * Save skb pointer. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 624 | */ |
| 625 | fep->tx_skbuff[curidx] = skb; |
| 626 | |
| 627 | fep->stats.tx_bytes += skb->len; |
| 628 | |
| 629 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 630 | * Push the data cache so the CPM does not get stale memory data. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 631 | */ |
| 632 | CBDW_BUFADDR(bdp, dma_map_single(fep->dev, |
| 633 | skb->data, skb->len, DMA_TO_DEVICE)); |
| 634 | CBDW_DATLEN(bdp, skb->len); |
| 635 | |
| 636 | dev->trans_start = jiffies; |
| 637 | |
| 638 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 639 | * If this was the last BD in the ring, start at the beginning again. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 640 | */ |
| 641 | if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0) |
| 642 | fep->cur_tx++; |
| 643 | else |
| 644 | fep->cur_tx = fep->tx_bd_base; |
| 645 | |
| 646 | if (!--fep->tx_free) |
| 647 | netif_stop_queue(dev); |
| 648 | |
| 649 | /* Trigger transmission start */ |
| 650 | sc = BD_ENET_TX_READY | BD_ENET_TX_INTR | |
| 651 | BD_ENET_TX_LAST | BD_ENET_TX_TC; |
| 652 | |
| 653 | /* note that while FEC does not have this bit |
| 654 | * it marks it as available for software use |
| 655 | * yay for hw reuse :) */ |
| 656 | if (skb->len <= 60) |
| 657 | sc |= BD_ENET_TX_PAD; |
| 658 | CBDS_SC(bdp, sc); |
| 659 | |
| 660 | (*fep->ops->tx_kickstart)(dev); |
| 661 | |
| 662 | spin_unlock_irqrestore(&fep->tx_lock, flags); |
| 663 | |
| 664 | return NETDEV_TX_OK; |
| 665 | } |
| 666 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 667 | static void fs_timeout(struct net_device *dev) |
| 668 | { |
| 669 | struct fs_enet_private *fep = netdev_priv(dev); |
| 670 | unsigned long flags; |
| 671 | int wake = 0; |
| 672 | |
| 673 | fep->stats.tx_errors++; |
| 674 | |
| 675 | spin_lock_irqsave(&fep->lock, flags); |
| 676 | |
| 677 | if (dev->flags & IFF_UP) { |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 678 | phy_stop(fep->phydev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 679 | (*fep->ops->stop)(dev); |
| 680 | (*fep->ops->restart)(dev); |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 681 | phy_start(fep->phydev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 682 | } |
| 683 | |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 684 | phy_start(fep->phydev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 685 | wake = fep->tx_free && !(CBDR_SC(fep->cur_tx) & BD_ENET_TX_READY); |
| 686 | spin_unlock_irqrestore(&fep->lock, flags); |
| 687 | |
| 688 | if (wake) |
| 689 | netif_wake_queue(dev); |
| 690 | } |
| 691 | |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 692 | /*----------------------------------------------------------------------------- |
| 693 | * generic link-change handler - should be sufficient for most cases |
| 694 | *-----------------------------------------------------------------------------*/ |
| 695 | static void generic_adjust_link(struct net_device *dev) |
| 696 | { |
Scott Wood | 0fb300f | 2007-10-01 14:20:17 -0500 | [diff] [blame] | 697 | struct fs_enet_private *fep = netdev_priv(dev); |
| 698 | struct phy_device *phydev = fep->phydev; |
| 699 | int new_state = 0; |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 700 | |
Scott Wood | 0fb300f | 2007-10-01 14:20:17 -0500 | [diff] [blame] | 701 | if (phydev->link) { |
| 702 | /* adjust to duplex mode */ |
| 703 | if (phydev->duplex != fep->oldduplex) { |
| 704 | new_state = 1; |
| 705 | fep->oldduplex = phydev->duplex; |
| 706 | } |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 707 | |
Scott Wood | 0fb300f | 2007-10-01 14:20:17 -0500 | [diff] [blame] | 708 | if (phydev->speed != fep->oldspeed) { |
| 709 | new_state = 1; |
| 710 | fep->oldspeed = phydev->speed; |
| 711 | } |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 712 | |
Scott Wood | 0fb300f | 2007-10-01 14:20:17 -0500 | [diff] [blame] | 713 | if (!fep->oldlink) { |
| 714 | new_state = 1; |
| 715 | fep->oldlink = 1; |
Scott Wood | 0fb300f | 2007-10-01 14:20:17 -0500 | [diff] [blame] | 716 | } |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 717 | |
Scott Wood | 0fb300f | 2007-10-01 14:20:17 -0500 | [diff] [blame] | 718 | if (new_state) |
| 719 | fep->ops->restart(dev); |
| 720 | } else if (fep->oldlink) { |
| 721 | new_state = 1; |
| 722 | fep->oldlink = 0; |
| 723 | fep->oldspeed = 0; |
| 724 | fep->oldduplex = -1; |
Scott Wood | 0fb300f | 2007-10-01 14:20:17 -0500 | [diff] [blame] | 725 | } |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 726 | |
Scott Wood | 0fb300f | 2007-10-01 14:20:17 -0500 | [diff] [blame] | 727 | if (new_state && netif_msg_link(fep)) |
| 728 | phy_print_status(phydev); |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 729 | } |
| 730 | |
| 731 | |
| 732 | static void fs_adjust_link(struct net_device *dev) |
| 733 | { |
| 734 | struct fs_enet_private *fep = netdev_priv(dev); |
| 735 | unsigned long flags; |
| 736 | |
| 737 | spin_lock_irqsave(&fep->lock, flags); |
| 738 | |
| 739 | if(fep->ops->adjust_link) |
| 740 | fep->ops->adjust_link(dev); |
| 741 | else |
| 742 | generic_adjust_link(dev); |
| 743 | |
| 744 | spin_unlock_irqrestore(&fep->lock, flags); |
| 745 | } |
| 746 | |
| 747 | static int fs_init_phy(struct net_device *dev) |
| 748 | { |
| 749 | struct fs_enet_private *fep = netdev_priv(dev); |
| 750 | struct phy_device *phydev; |
| 751 | |
| 752 | fep->oldlink = 0; |
| 753 | fep->oldspeed = 0; |
| 754 | fep->oldduplex = -1; |
| 755 | if(fep->fpi->bus_id) |
Andy Fleming | e8a2b6a | 2006-12-01 12:01:06 -0600 | [diff] [blame] | 756 | phydev = phy_connect(dev, fep->fpi->bus_id, &fs_adjust_link, 0, |
| 757 | PHY_INTERFACE_MODE_MII); |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 758 | else { |
| 759 | printk("No phy bus ID specified in BSP code\n"); |
| 760 | return -EINVAL; |
| 761 | } |
| 762 | if (IS_ERR(phydev)) { |
| 763 | printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name); |
| 764 | return PTR_ERR(phydev); |
| 765 | } |
| 766 | |
| 767 | fep->phydev = phydev; |
| 768 | |
| 769 | return 0; |
| 770 | } |
| 771 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 772 | static int fs_enet_open(struct net_device *dev) |
| 773 | { |
| 774 | struct fs_enet_private *fep = netdev_priv(dev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 775 | int r; |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 776 | int err; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 777 | |
Heiko Schocher | f4f6230 | 2008-08-25 20:20:53 -0500 | [diff] [blame] | 778 | /* to initialize the fep->cur_rx,... */ |
| 779 | /* not doing this, will cause a crash in fs_enet_rx_napi */ |
| 780 | fs_init_bds(fep->ndev); |
| 781 | |
Scott Wood | f860f49 | 2007-10-17 12:42:43 -0500 | [diff] [blame] | 782 | if (fep->fpi->use_napi) |
| 783 | napi_enable(&fep->napi); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 784 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 785 | /* Install our interrupt handler. */ |
Kumar Gala | 31578140 | 2008-09-22 14:52:18 -0700 | [diff] [blame] | 786 | r = request_irq(fep->interrupt, fs_enet_interrupt, IRQF_SHARED, |
| 787 | "fs_enet-mac", dev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 788 | if (r != 0) { |
| 789 | printk(KERN_ERR DRV_MODULE_NAME |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 790 | ": %s Could not allocate FS_ENET IRQ!", dev->name); |
Scott Wood | f860f49 | 2007-10-17 12:42:43 -0500 | [diff] [blame] | 791 | if (fep->fpi->use_napi) |
| 792 | napi_disable(&fep->napi); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 793 | return -EINVAL; |
| 794 | } |
| 795 | |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 796 | err = fs_init_phy(dev); |
Scott Wood | f860f49 | 2007-10-17 12:42:43 -0500 | [diff] [blame] | 797 | if (err) { |
| 798 | if (fep->fpi->use_napi) |
| 799 | napi_disable(&fep->napi); |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 800 | return err; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 801 | } |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 802 | phy_start(fep->phydev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 803 | |
Anton Vorontsov | c8f1568 | 2008-07-22 15:41:24 -0700 | [diff] [blame] | 804 | netif_start_queue(dev); |
| 805 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 806 | return 0; |
| 807 | } |
| 808 | |
| 809 | static int fs_enet_close(struct net_device *dev) |
| 810 | { |
| 811 | struct fs_enet_private *fep = netdev_priv(dev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 812 | unsigned long flags; |
| 813 | |
| 814 | netif_stop_queue(dev); |
| 815 | netif_carrier_off(dev); |
Laurent Pinchart | 9a3c243 | 2008-04-11 14:05:50 +0200 | [diff] [blame] | 816 | if (fep->fpi->use_napi) |
| 817 | napi_disable(&fep->napi); |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 818 | phy_stop(fep->phydev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 819 | |
| 820 | spin_lock_irqsave(&fep->lock, flags); |
Vitaly Bordug | aa90f50 | 2007-09-18 20:05:27 +0400 | [diff] [blame] | 821 | spin_lock(&fep->tx_lock); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 822 | (*fep->ops->stop)(dev); |
Vitaly Bordug | aa90f50 | 2007-09-18 20:05:27 +0400 | [diff] [blame] | 823 | spin_unlock(&fep->tx_lock); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 824 | spin_unlock_irqrestore(&fep->lock, flags); |
| 825 | |
| 826 | /* release any irqs */ |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 827 | phy_disconnect(fep->phydev); |
| 828 | fep->phydev = NULL; |
Kumar Gala | 31578140 | 2008-09-22 14:52:18 -0700 | [diff] [blame] | 829 | free_irq(fep->interrupt, dev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 830 | |
| 831 | return 0; |
| 832 | } |
| 833 | |
| 834 | static struct net_device_stats *fs_enet_get_stats(struct net_device *dev) |
| 835 | { |
| 836 | struct fs_enet_private *fep = netdev_priv(dev); |
| 837 | return &fep->stats; |
| 838 | } |
| 839 | |
| 840 | /*************************************************************************/ |
| 841 | |
| 842 | static void fs_get_drvinfo(struct net_device *dev, |
| 843 | struct ethtool_drvinfo *info) |
| 844 | { |
| 845 | strcpy(info->driver, DRV_MODULE_NAME); |
| 846 | strcpy(info->version, DRV_MODULE_VERSION); |
| 847 | } |
| 848 | |
| 849 | static int fs_get_regs_len(struct net_device *dev) |
| 850 | { |
| 851 | struct fs_enet_private *fep = netdev_priv(dev); |
| 852 | |
| 853 | return (*fep->ops->get_regs_len)(dev); |
| 854 | } |
| 855 | |
| 856 | static void fs_get_regs(struct net_device *dev, struct ethtool_regs *regs, |
| 857 | void *p) |
| 858 | { |
| 859 | struct fs_enet_private *fep = netdev_priv(dev); |
| 860 | unsigned long flags; |
| 861 | int r, len; |
| 862 | |
| 863 | len = regs->len; |
| 864 | |
| 865 | spin_lock_irqsave(&fep->lock, flags); |
| 866 | r = (*fep->ops->get_regs)(dev, p, &len); |
| 867 | spin_unlock_irqrestore(&fep->lock, flags); |
| 868 | |
| 869 | if (r == 0) |
| 870 | regs->version = 0; |
| 871 | } |
| 872 | |
| 873 | static int fs_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 874 | { |
| 875 | struct fs_enet_private *fep = netdev_priv(dev); |
Anton Vorontsov | dfd9a421 | 2008-01-08 22:05:55 +0300 | [diff] [blame] | 876 | |
| 877 | if (!fep->phydev) |
| 878 | return -ENODEV; |
| 879 | |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 880 | return phy_ethtool_gset(fep->phydev, cmd); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 881 | } |
| 882 | |
| 883 | static int fs_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 884 | { |
| 885 | struct fs_enet_private *fep = netdev_priv(dev); |
Anton Vorontsov | dfd9a421 | 2008-01-08 22:05:55 +0300 | [diff] [blame] | 886 | |
| 887 | if (!fep->phydev) |
| 888 | return -ENODEV; |
| 889 | |
| 890 | return phy_ethtool_sset(fep->phydev, cmd); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 891 | } |
| 892 | |
| 893 | static int fs_nway_reset(struct net_device *dev) |
| 894 | { |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 895 | return 0; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 896 | } |
| 897 | |
| 898 | static u32 fs_get_msglevel(struct net_device *dev) |
| 899 | { |
| 900 | struct fs_enet_private *fep = netdev_priv(dev); |
| 901 | return fep->msg_enable; |
| 902 | } |
| 903 | |
| 904 | static void fs_set_msglevel(struct net_device *dev, u32 value) |
| 905 | { |
| 906 | struct fs_enet_private *fep = netdev_priv(dev); |
| 907 | fep->msg_enable = value; |
| 908 | } |
| 909 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 910 | static const struct ethtool_ops fs_ethtool_ops = { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 911 | .get_drvinfo = fs_get_drvinfo, |
| 912 | .get_regs_len = fs_get_regs_len, |
| 913 | .get_settings = fs_get_settings, |
| 914 | .set_settings = fs_set_settings, |
| 915 | .nway_reset = fs_nway_reset, |
| 916 | .get_link = ethtool_op_get_link, |
| 917 | .get_msglevel = fs_get_msglevel, |
| 918 | .set_msglevel = fs_set_msglevel, |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 919 | .set_tx_csum = ethtool_op_set_tx_csum, /* local! */ |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 920 | .set_sg = ethtool_op_set_sg, |
| 921 | .get_regs = fs_get_regs, |
| 922 | }; |
| 923 | |
| 924 | static int fs_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 925 | { |
| 926 | struct fs_enet_private *fep = netdev_priv(dev); |
| 927 | struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&rq->ifr_data; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 928 | |
| 929 | if (!netif_running(dev)) |
| 930 | return -EINVAL; |
| 931 | |
Scott Wood | 5bd3670 | 2008-02-15 15:08:04 -0600 | [diff] [blame] | 932 | return phy_mii_ioctl(fep->phydev, mii, cmd); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 933 | } |
| 934 | |
| 935 | extern int fs_mii_connect(struct net_device *dev); |
| 936 | extern void fs_mii_disconnect(struct net_device *dev); |
| 937 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 938 | /**************************************************************************************/ |
| 939 | |
| 940 | /* handy pointer to the immap */ |
Scott Wood | 31a5bb0 | 2007-10-01 14:20:58 -0500 | [diff] [blame] | 941 | void __iomem *fs_enet_immap = NULL; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 942 | |
| 943 | static int setup_immap(void) |
| 944 | { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 945 | #ifdef CONFIG_CPM1 |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 946 | fs_enet_immap = ioremap(IMAP_ADDR, 0x4000); |
| 947 | WARN_ON(!fs_enet_immap); |
| 948 | #elif defined(CONFIG_CPM2) |
| 949 | fs_enet_immap = cpm2_immr; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 950 | #endif |
| 951 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 952 | return 0; |
| 953 | } |
| 954 | |
| 955 | static void cleanup_immap(void) |
| 956 | { |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 957 | #if defined(CONFIG_CPM1) |
| 958 | iounmap(fs_enet_immap); |
| 959 | #endif |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 960 | } |
| 961 | |
| 962 | /**************************************************************************************/ |
| 963 | |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 964 | static int __devinit find_phy(struct device_node *np, |
| 965 | struct fs_platform_info *fpi) |
| 966 | { |
| 967 | struct device_node *phynode, *mdionode; |
Laurent Pinchart | d8b35fa | 2008-05-26 11:53:45 +0200 | [diff] [blame] | 968 | int ret = 0, len, bus_id; |
Jochen Friedrich | 70f782e | 2007-12-18 16:25:43 +0100 | [diff] [blame] | 969 | const u32 *data; |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 970 | |
Jochen Friedrich | 70f782e | 2007-12-18 16:25:43 +0100 | [diff] [blame] | 971 | data = of_get_property(np, "fixed-link", NULL); |
| 972 | if (data) { |
Andy Fleming | 9d9326d | 2008-04-09 19:38:13 -0500 | [diff] [blame] | 973 | snprintf(fpi->bus_id, 16, "%x:%02x", 0, *data); |
Jochen Friedrich | 70f782e | 2007-12-18 16:25:43 +0100 | [diff] [blame] | 974 | return 0; |
| 975 | } |
| 976 | |
| 977 | data = of_get_property(np, "phy-handle", &len); |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 978 | if (!data || len != 4) |
| 979 | return -EINVAL; |
| 980 | |
| 981 | phynode = of_find_node_by_phandle(*data); |
| 982 | if (!phynode) |
| 983 | return -EINVAL; |
| 984 | |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 985 | data = of_get_property(phynode, "reg", &len); |
Laurent Pinchart | d8b35fa | 2008-05-26 11:53:45 +0200 | [diff] [blame] | 986 | if (!data || len != 4) { |
| 987 | ret = -EINVAL; |
| 988 | goto out_put_phy; |
| 989 | } |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 990 | |
Laurent Pinchart | d8b35fa | 2008-05-26 11:53:45 +0200 | [diff] [blame] | 991 | mdionode = of_get_parent(phynode); |
| 992 | if (!mdionode) { |
| 993 | ret = -EINVAL; |
| 994 | goto out_put_phy; |
| 995 | } |
| 996 | |
| 997 | bus_id = of_get_gpio(mdionode, 0); |
| 998 | if (bus_id < 0) { |
| 999 | struct resource res; |
| 1000 | ret = of_address_to_resource(mdionode, 0, &res); |
| 1001 | if (ret) |
| 1002 | goto out_put_mdio; |
| 1003 | bus_id = res.start; |
| 1004 | } |
| 1005 | |
| 1006 | snprintf(fpi->bus_id, 16, "%x:%02x", bus_id, *data); |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1007 | |
| 1008 | out_put_mdio: |
| 1009 | of_node_put(mdionode); |
| 1010 | out_put_phy: |
| 1011 | of_node_put(phynode); |
| 1012 | return ret; |
| 1013 | } |
| 1014 | |
| 1015 | #ifdef CONFIG_FS_ENET_HAS_FEC |
| 1016 | #define IS_FEC(match) ((match)->data == &fs_fec_ops) |
| 1017 | #else |
| 1018 | #define IS_FEC(match) 0 |
| 1019 | #endif |
| 1020 | |
| 1021 | static int __devinit fs_enet_probe(struct of_device *ofdev, |
| 1022 | const struct of_device_id *match) |
| 1023 | { |
| 1024 | struct net_device *ndev; |
| 1025 | struct fs_enet_private *fep; |
| 1026 | struct fs_platform_info *fpi; |
| 1027 | const u32 *data; |
| 1028 | const u8 *mac_addr; |
| 1029 | int privsize, len, ret = -ENODEV; |
| 1030 | |
| 1031 | fpi = kzalloc(sizeof(*fpi), GFP_KERNEL); |
| 1032 | if (!fpi) |
| 1033 | return -ENOMEM; |
| 1034 | |
| 1035 | if (!IS_FEC(match)) { |
| 1036 | data = of_get_property(ofdev->node, "fsl,cpm-command", &len); |
| 1037 | if (!data || len != 4) |
| 1038 | goto out_free_fpi; |
| 1039 | |
| 1040 | fpi->cp_command = *data; |
| 1041 | } |
| 1042 | |
| 1043 | fpi->rx_ring = 32; |
| 1044 | fpi->tx_ring = 32; |
| 1045 | fpi->rx_copybreak = 240; |
Scott Wood | f860f49 | 2007-10-17 12:42:43 -0500 | [diff] [blame] | 1046 | fpi->use_napi = 1; |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1047 | fpi->napi_weight = 17; |
| 1048 | |
| 1049 | ret = find_phy(ofdev->node, fpi); |
| 1050 | if (ret) |
| 1051 | goto out_free_fpi; |
| 1052 | |
| 1053 | privsize = sizeof(*fep) + |
| 1054 | sizeof(struct sk_buff **) * |
| 1055 | (fpi->rx_ring + fpi->tx_ring); |
| 1056 | |
| 1057 | ndev = alloc_etherdev(privsize); |
| 1058 | if (!ndev) { |
| 1059 | ret = -ENOMEM; |
| 1060 | goto out_free_fpi; |
| 1061 | } |
| 1062 | |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1063 | dev_set_drvdata(&ofdev->dev, ndev); |
| 1064 | |
| 1065 | fep = netdev_priv(ndev); |
| 1066 | fep->dev = &ofdev->dev; |
Scott Wood | f860f49 | 2007-10-17 12:42:43 -0500 | [diff] [blame] | 1067 | fep->ndev = ndev; |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1068 | fep->fpi = fpi; |
| 1069 | fep->ops = match->data; |
| 1070 | |
| 1071 | ret = fep->ops->setup_data(ndev); |
| 1072 | if (ret) |
| 1073 | goto out_free_dev; |
| 1074 | |
| 1075 | fep->rx_skbuff = (struct sk_buff **)&fep[1]; |
| 1076 | fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring; |
| 1077 | |
| 1078 | spin_lock_init(&fep->lock); |
| 1079 | spin_lock_init(&fep->tx_lock); |
| 1080 | |
| 1081 | mac_addr = of_get_mac_address(ofdev->node); |
| 1082 | if (mac_addr) |
| 1083 | memcpy(ndev->dev_addr, mac_addr, 6); |
| 1084 | |
| 1085 | ret = fep->ops->allocate_bd(ndev); |
| 1086 | if (ret) |
| 1087 | goto out_cleanup_data; |
| 1088 | |
| 1089 | fep->rx_bd_base = fep->ring_base; |
| 1090 | fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring; |
| 1091 | |
| 1092 | fep->tx_ring = fpi->tx_ring; |
| 1093 | fep->rx_ring = fpi->rx_ring; |
| 1094 | |
| 1095 | ndev->open = fs_enet_open; |
| 1096 | ndev->hard_start_xmit = fs_enet_start_xmit; |
| 1097 | ndev->tx_timeout = fs_timeout; |
| 1098 | ndev->watchdog_timeo = 2 * HZ; |
| 1099 | ndev->stop = fs_enet_close; |
| 1100 | ndev->get_stats = fs_enet_get_stats; |
| 1101 | ndev->set_multicast_list = fs_set_multicast_list; |
Scott Wood | f860f49 | 2007-10-17 12:42:43 -0500 | [diff] [blame] | 1102 | |
| 1103 | if (fpi->use_napi) |
| 1104 | netif_napi_add(ndev, &fep->napi, fs_enet_rx_napi, |
| 1105 | fpi->napi_weight); |
| 1106 | |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1107 | ndev->ethtool_ops = &fs_ethtool_ops; |
| 1108 | ndev->do_ioctl = fs_ioctl; |
| 1109 | |
| 1110 | init_timer(&fep->phy_timer_list); |
| 1111 | |
| 1112 | netif_carrier_off(ndev); |
| 1113 | |
| 1114 | ret = register_netdev(ndev); |
| 1115 | if (ret) |
| 1116 | goto out_free_bd; |
| 1117 | |
| 1118 | printk(KERN_INFO "%s: fs_enet: %02x:%02x:%02x:%02x:%02x:%02x\n", |
| 1119 | ndev->name, |
| 1120 | ndev->dev_addr[0], ndev->dev_addr[1], ndev->dev_addr[2], |
| 1121 | ndev->dev_addr[3], ndev->dev_addr[4], ndev->dev_addr[5]); |
| 1122 | |
| 1123 | return 0; |
| 1124 | |
| 1125 | out_free_bd: |
| 1126 | fep->ops->free_bd(ndev); |
| 1127 | out_cleanup_data: |
| 1128 | fep->ops->cleanup_data(ndev); |
| 1129 | out_free_dev: |
| 1130 | free_netdev(ndev); |
| 1131 | dev_set_drvdata(&ofdev->dev, NULL); |
| 1132 | out_free_fpi: |
| 1133 | kfree(fpi); |
| 1134 | return ret; |
| 1135 | } |
| 1136 | |
| 1137 | static int fs_enet_remove(struct of_device *ofdev) |
| 1138 | { |
| 1139 | struct net_device *ndev = dev_get_drvdata(&ofdev->dev); |
| 1140 | struct fs_enet_private *fep = netdev_priv(ndev); |
| 1141 | |
| 1142 | unregister_netdev(ndev); |
| 1143 | |
| 1144 | fep->ops->free_bd(ndev); |
| 1145 | fep->ops->cleanup_data(ndev); |
| 1146 | dev_set_drvdata(fep->dev, NULL); |
| 1147 | |
| 1148 | free_netdev(ndev); |
| 1149 | return 0; |
| 1150 | } |
| 1151 | |
| 1152 | static struct of_device_id fs_enet_match[] = { |
| 1153 | #ifdef CONFIG_FS_ENET_HAS_SCC |
| 1154 | { |
| 1155 | .compatible = "fsl,cpm1-scc-enet", |
| 1156 | .data = (void *)&fs_scc_ops, |
| 1157 | }, |
Heiko Schocher | f4f6230 | 2008-08-25 20:20:53 -0500 | [diff] [blame] | 1158 | { |
| 1159 | .compatible = "fsl,cpm2-scc-enet", |
| 1160 | .data = (void *)&fs_scc_ops, |
| 1161 | }, |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1162 | #endif |
| 1163 | #ifdef CONFIG_FS_ENET_HAS_FCC |
| 1164 | { |
| 1165 | .compatible = "fsl,cpm2-fcc-enet", |
| 1166 | .data = (void *)&fs_fcc_ops, |
| 1167 | }, |
| 1168 | #endif |
| 1169 | #ifdef CONFIG_FS_ENET_HAS_FEC |
| 1170 | { |
| 1171 | .compatible = "fsl,pq1-fec-enet", |
| 1172 | .data = (void *)&fs_fec_ops, |
| 1173 | }, |
| 1174 | #endif |
| 1175 | {} |
| 1176 | }; |
| 1177 | |
| 1178 | static struct of_platform_driver fs_enet_driver = { |
| 1179 | .name = "fs_enet", |
| 1180 | .match_table = fs_enet_match, |
| 1181 | .probe = fs_enet_probe, |
| 1182 | .remove = fs_enet_remove, |
| 1183 | }; |
| 1184 | |
| 1185 | static int __init fs_init(void) |
| 1186 | { |
| 1187 | int r = setup_immap(); |
| 1188 | if (r != 0) |
| 1189 | return r; |
| 1190 | |
| 1191 | r = of_register_platform_driver(&fs_enet_driver); |
| 1192 | if (r != 0) |
| 1193 | goto out; |
| 1194 | |
| 1195 | return 0; |
| 1196 | |
| 1197 | out: |
| 1198 | cleanup_immap(); |
| 1199 | return r; |
| 1200 | } |
| 1201 | |
| 1202 | static void __exit fs_cleanup(void) |
| 1203 | { |
| 1204 | of_unregister_platform_driver(&fs_enet_driver); |
| 1205 | cleanup_immap(); |
| 1206 | } |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 1207 | |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 1208 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1209 | static void fs_enet_netpoll(struct net_device *dev) |
| 1210 | { |
| 1211 | disable_irq(dev->irq); |
| 1212 | fs_enet_interrupt(dev->irq, dev, NULL); |
| 1213 | enable_irq(dev->irq); |
| 1214 | } |
| 1215 | #endif |
| 1216 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 1217 | /**************************************************************************************/ |
| 1218 | |
| 1219 | module_init(fs_init); |
| 1220 | module_exit(fs_cleanup); |