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> |
Grant Likely | aa73832 | 2009-04-25 12:53:33 +0000 | [diff] [blame] | 39 | #include <linux/of.h> |
| 40 | #include <linux/of_mdio.h> |
Kumar Gala | b219108 | 2008-06-12 08:32:13 -0500 | [diff] [blame] | 41 | #include <linux/of_platform.h> |
Benjamin Herrenschmidt | 8725f25 | 2008-07-22 17:12:37 +1000 | [diff] [blame] | 42 | #include <linux/of_gpio.h> |
David Daney | 4b6ba8a | 2010-10-26 15:07:13 -0700 | [diff] [blame] | 43 | #include <linux/of_net.h> |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 44 | |
| 45 | #include <linux/vmalloc.h> |
| 46 | #include <asm/pgtable.h> |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 47 | #include <asm/irq.h> |
| 48 | #include <asm/uaccess.h> |
| 49 | |
| 50 | #include "fs_enet.h" |
| 51 | |
| 52 | /*************************************************/ |
| 53 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 54 | MODULE_AUTHOR("Pantelis Antoniou <panto@intracom.gr>"); |
| 55 | MODULE_DESCRIPTION("Freescale Ethernet Driver"); |
| 56 | MODULE_LICENSE("GPL"); |
| 57 | MODULE_VERSION(DRV_MODULE_VERSION); |
| 58 | |
Scott Wood | 31a5bb0 | 2007-10-01 14:20:58 -0500 | [diff] [blame] | 59 | 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] | 60 | module_param(fs_enet_debug, int, 0); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 61 | MODULE_PARM_DESC(fs_enet_debug, |
| 62 | "Freescale bitmapped debugging message enable value"); |
| 63 | |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 64 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 65 | static void fs_enet_netpoll(struct net_device *dev); |
| 66 | #endif |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 67 | |
| 68 | static void fs_set_multicast_list(struct net_device *dev) |
| 69 | { |
| 70 | struct fs_enet_private *fep = netdev_priv(dev); |
| 71 | |
| 72 | (*fep->ops->set_multicast_list)(dev); |
| 73 | } |
| 74 | |
Scott Wood | 0d0d9c1 | 2007-10-01 14:20:52 -0500 | [diff] [blame] | 75 | static void skb_align(struct sk_buff *skb, int align) |
| 76 | { |
| 77 | int off = ((unsigned long)skb->data) & (align - 1); |
| 78 | |
| 79 | if (off) |
| 80 | skb_reserve(skb, align - off); |
| 81 | } |
| 82 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 83 | /* NAPI receive function */ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 84 | static int fs_enet_rx_napi(struct napi_struct *napi, int budget) |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 85 | { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 86 | 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] | 87 | struct net_device *dev = fep->ndev; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 88 | const struct fs_platform_info *fpi = fep->fpi; |
Scott Wood | 31a5bb0 | 2007-10-01 14:20:58 -0500 | [diff] [blame] | 89 | cbd_t __iomem *bdp; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 90 | struct sk_buff *skb, *skbn, *skbt; |
| 91 | int received = 0; |
| 92 | u16 pkt_len, sc; |
| 93 | int curidx; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 94 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 95 | /* |
| 96 | * First, grab all of the stats for the incoming packet. |
| 97 | * These get messed up if we get called due to a busy condition. |
| 98 | */ |
| 99 | bdp = fep->cur_rx; |
| 100 | |
| 101 | /* clear RX status bits for napi*/ |
| 102 | (*fep->ops->napi_clear_rx_event)(dev); |
| 103 | |
| 104 | while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 105 | curidx = bdp - fep->rx_bd_base; |
| 106 | |
| 107 | /* |
| 108 | * Since we have allocated space to hold a complete frame, |
| 109 | * the last indicator should be set. |
| 110 | */ |
| 111 | if ((sc & BD_ENET_RX_LAST) == 0) |
Anatolij Gustschin | fcb6a1c | 2010-02-26 12:00:47 +0000 | [diff] [blame] | 112 | dev_warn(fep->dev, "rcv is not +last\n"); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 113 | |
| 114 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 115 | * Check for errors. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 116 | */ |
| 117 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL | |
| 118 | BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) { |
| 119 | fep->stats.rx_errors++; |
| 120 | /* Frame too long or too short. */ |
| 121 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH)) |
| 122 | fep->stats.rx_length_errors++; |
| 123 | /* Frame alignment */ |
| 124 | if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL)) |
| 125 | fep->stats.rx_frame_errors++; |
| 126 | /* CRC Error */ |
| 127 | if (sc & BD_ENET_RX_CR) |
| 128 | fep->stats.rx_crc_errors++; |
| 129 | /* FIFO overrun */ |
| 130 | if (sc & BD_ENET_RX_OV) |
| 131 | fep->stats.rx_crc_errors++; |
| 132 | |
| 133 | skb = fep->rx_skbuff[curidx]; |
| 134 | |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 135 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 136 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
| 137 | DMA_FROM_DEVICE); |
| 138 | |
| 139 | skbn = skb; |
| 140 | |
| 141 | } else { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 142 | skb = fep->rx_skbuff[curidx]; |
| 143 | |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 144 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 145 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
| 146 | DMA_FROM_DEVICE); |
| 147 | |
| 148 | /* |
| 149 | * Process the incoming frame. |
| 150 | */ |
| 151 | fep->stats.rx_packets++; |
| 152 | pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */ |
| 153 | fep->stats.rx_bytes += pkt_len + 4; |
| 154 | |
| 155 | if (pkt_len <= fpi->rx_copybreak) { |
| 156 | /* +2 to make IP header L1 cache aligned */ |
| 157 | skbn = dev_alloc_skb(pkt_len + 2); |
| 158 | if (skbn != NULL) { |
| 159 | skb_reserve(skbn, 2); /* align IP header */ |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 160 | skb_copy_from_linear_data(skb, |
| 161 | skbn->data, pkt_len); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 162 | /* swap */ |
| 163 | skbt = skb; |
| 164 | skb = skbn; |
| 165 | skbn = skbt; |
| 166 | } |
Scott Wood | 0d0d9c1 | 2007-10-01 14:20:52 -0500 | [diff] [blame] | 167 | } else { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 168 | skbn = dev_alloc_skb(ENET_RX_FRSIZE); |
| 169 | |
Scott Wood | 0d0d9c1 | 2007-10-01 14:20:52 -0500 | [diff] [blame] | 170 | if (skbn) |
| 171 | skb_align(skbn, ENET_RX_ALIGN); |
| 172 | } |
| 173 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 174 | if (skbn != NULL) { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 175 | skb_put(skb, pkt_len); /* Make room */ |
| 176 | skb->protocol = eth_type_trans(skb, dev); |
| 177 | received++; |
| 178 | netif_receive_skb(skb); |
| 179 | } else { |
Anatolij Gustschin | fcb6a1c | 2010-02-26 12:00:47 +0000 | [diff] [blame] | 180 | dev_warn(fep->dev, |
| 181 | "Memory squeeze, dropping packet.\n"); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 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 */ |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 212 | napi_complete(napi); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 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) |
Anatolij Gustschin | fcb6a1c | 2010-02-26 12:00:47 +0000 | [diff] [blame] | 243 | dev_warn(fep->dev, "rcv is not +last\n"); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 244 | |
| 245 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 246 | * Check for errors. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 247 | */ |
| 248 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL | |
| 249 | BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) { |
| 250 | fep->stats.rx_errors++; |
| 251 | /* Frame too long or too short. */ |
| 252 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH)) |
| 253 | fep->stats.rx_length_errors++; |
| 254 | /* Frame alignment */ |
| 255 | if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL)) |
| 256 | fep->stats.rx_frame_errors++; |
| 257 | /* CRC Error */ |
| 258 | if (sc & BD_ENET_RX_CR) |
| 259 | fep->stats.rx_crc_errors++; |
| 260 | /* FIFO overrun */ |
| 261 | if (sc & BD_ENET_RX_OV) |
| 262 | fep->stats.rx_crc_errors++; |
| 263 | |
| 264 | skb = fep->rx_skbuff[curidx]; |
| 265 | |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 266 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 267 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
| 268 | DMA_FROM_DEVICE); |
| 269 | |
| 270 | skbn = skb; |
| 271 | |
| 272 | } else { |
| 273 | |
| 274 | skb = fep->rx_skbuff[curidx]; |
| 275 | |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 276 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 277 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
| 278 | DMA_FROM_DEVICE); |
| 279 | |
| 280 | /* |
| 281 | * Process the incoming frame. |
| 282 | */ |
| 283 | fep->stats.rx_packets++; |
| 284 | pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */ |
| 285 | fep->stats.rx_bytes += pkt_len + 4; |
| 286 | |
| 287 | if (pkt_len <= fpi->rx_copybreak) { |
| 288 | /* +2 to make IP header L1 cache aligned */ |
| 289 | skbn = dev_alloc_skb(pkt_len + 2); |
| 290 | if (skbn != NULL) { |
| 291 | skb_reserve(skbn, 2); /* align IP header */ |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 292 | skb_copy_from_linear_data(skb, |
| 293 | skbn->data, pkt_len); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 294 | /* swap */ |
| 295 | skbt = skb; |
| 296 | skb = skbn; |
| 297 | skbn = skbt; |
| 298 | } |
Scott Wood | 0d0d9c1 | 2007-10-01 14:20:52 -0500 | [diff] [blame] | 299 | } else { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 300 | skbn = dev_alloc_skb(ENET_RX_FRSIZE); |
| 301 | |
Scott Wood | 0d0d9c1 | 2007-10-01 14:20:52 -0500 | [diff] [blame] | 302 | if (skbn) |
| 303 | skb_align(skbn, ENET_RX_ALIGN); |
| 304 | } |
| 305 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 306 | if (skbn != NULL) { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 307 | skb_put(skb, pkt_len); /* Make room */ |
| 308 | skb->protocol = eth_type_trans(skb, dev); |
| 309 | received++; |
| 310 | netif_rx(skb); |
| 311 | } else { |
Anatolij Gustschin | fcb6a1c | 2010-02-26 12:00:47 +0000 | [diff] [blame] | 312 | dev_warn(fep->dev, |
| 313 | "Memory squeeze, dropping packet.\n"); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 314 | fep->stats.rx_dropped++; |
| 315 | skbn = skb; |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | fep->rx_skbuff[curidx] = skbn; |
| 320 | CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data, |
| 321 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
| 322 | DMA_FROM_DEVICE)); |
| 323 | CBDW_DATLEN(bdp, 0); |
| 324 | CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY); |
| 325 | |
| 326 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 327 | * Update BD pointer to next entry. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 328 | */ |
| 329 | if ((sc & BD_ENET_RX_WRAP) == 0) |
| 330 | bdp++; |
| 331 | else |
| 332 | bdp = fep->rx_bd_base; |
| 333 | |
| 334 | (*fep->ops->rx_bd_done)(dev); |
| 335 | } |
| 336 | |
| 337 | fep->cur_rx = bdp; |
| 338 | |
| 339 | return 0; |
| 340 | } |
| 341 | |
| 342 | static void fs_enet_tx(struct net_device *dev) |
| 343 | { |
| 344 | struct fs_enet_private *fep = netdev_priv(dev); |
Scott Wood | 31a5bb0 | 2007-10-01 14:20:58 -0500 | [diff] [blame] | 345 | cbd_t __iomem *bdp; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 346 | struct sk_buff *skb; |
| 347 | int dirtyidx, do_wake, do_restart; |
| 348 | u16 sc; |
| 349 | |
Vitaly Bordug | aa90f50 | 2007-09-18 20:05:27 +0400 | [diff] [blame] | 350 | spin_lock(&fep->tx_lock); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 351 | bdp = fep->dirty_tx; |
| 352 | |
| 353 | do_wake = do_restart = 0; |
| 354 | while (((sc = CBDR_SC(bdp)) & BD_ENET_TX_READY) == 0) { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 355 | dirtyidx = bdp - fep->tx_bd_base; |
| 356 | |
| 357 | if (fep->tx_free == fep->tx_ring) |
| 358 | break; |
| 359 | |
| 360 | skb = fep->tx_skbuff[dirtyidx]; |
| 361 | |
| 362 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 363 | * Check for errors. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 364 | */ |
| 365 | if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC | |
| 366 | BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) { |
| 367 | |
| 368 | if (sc & BD_ENET_TX_HB) /* No heartbeat */ |
| 369 | fep->stats.tx_heartbeat_errors++; |
| 370 | if (sc & BD_ENET_TX_LC) /* Late collision */ |
| 371 | fep->stats.tx_window_errors++; |
| 372 | if (sc & BD_ENET_TX_RL) /* Retrans limit */ |
| 373 | fep->stats.tx_aborted_errors++; |
| 374 | if (sc & BD_ENET_TX_UN) /* Underrun */ |
| 375 | fep->stats.tx_fifo_errors++; |
| 376 | if (sc & BD_ENET_TX_CSL) /* Carrier lost */ |
| 377 | fep->stats.tx_carrier_errors++; |
| 378 | |
| 379 | if (sc & (BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) { |
| 380 | fep->stats.tx_errors++; |
| 381 | do_restart = 1; |
| 382 | } |
| 383 | } else |
| 384 | fep->stats.tx_packets++; |
| 385 | |
Anatolij Gustschin | fcb6a1c | 2010-02-26 12:00:47 +0000 | [diff] [blame] | 386 | if (sc & BD_ENET_TX_READY) { |
| 387 | dev_warn(fep->dev, |
| 388 | "HEY! Enet xmit interrupt and TX_READY.\n"); |
| 389 | } |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 390 | |
| 391 | /* |
| 392 | * Deferred means some collisions occurred during transmit, |
| 393 | * but we eventually sent the packet OK. |
| 394 | */ |
| 395 | if (sc & BD_ENET_TX_DEF) |
| 396 | fep->stats.collisions++; |
| 397 | |
| 398 | /* unmap */ |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 399 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
| 400 | skb->len, DMA_TO_DEVICE); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 401 | |
| 402 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 403 | * Free the sk buffer associated with this last transmit. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 404 | */ |
| 405 | dev_kfree_skb_irq(skb); |
| 406 | fep->tx_skbuff[dirtyidx] = NULL; |
| 407 | |
| 408 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 409 | * Update pointer to next buffer descriptor to be transmitted. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 410 | */ |
| 411 | if ((sc & BD_ENET_TX_WRAP) == 0) |
| 412 | bdp++; |
| 413 | else |
| 414 | bdp = fep->tx_bd_base; |
| 415 | |
| 416 | /* |
| 417 | * Since we have freed up a buffer, the ring is no longer |
| 418 | * full. |
| 419 | */ |
| 420 | if (!fep->tx_free++) |
| 421 | do_wake = 1; |
| 422 | } |
| 423 | |
| 424 | fep->dirty_tx = bdp; |
| 425 | |
| 426 | if (do_restart) |
| 427 | (*fep->ops->tx_restart)(dev); |
| 428 | |
Vitaly Bordug | aa90f50 | 2007-09-18 20:05:27 +0400 | [diff] [blame] | 429 | spin_unlock(&fep->tx_lock); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 430 | |
| 431 | if (do_wake) |
| 432 | netif_wake_queue(dev); |
| 433 | } |
| 434 | |
| 435 | /* |
| 436 | * The interrupt handler. |
| 437 | * This is called from the MPC core interrupt. |
| 438 | */ |
| 439 | static irqreturn_t |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 440 | fs_enet_interrupt(int irq, void *dev_id) |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 441 | { |
| 442 | struct net_device *dev = dev_id; |
| 443 | struct fs_enet_private *fep; |
| 444 | const struct fs_platform_info *fpi; |
| 445 | u32 int_events; |
| 446 | u32 int_clr_events; |
| 447 | int nr, napi_ok; |
| 448 | int handled; |
| 449 | |
| 450 | fep = netdev_priv(dev); |
| 451 | fpi = fep->fpi; |
| 452 | |
| 453 | nr = 0; |
| 454 | while ((int_events = (*fep->ops->get_int_events)(dev)) != 0) { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 455 | nr++; |
| 456 | |
| 457 | int_clr_events = int_events; |
| 458 | if (fpi->use_napi) |
| 459 | int_clr_events &= ~fep->ev_napi_rx; |
| 460 | |
| 461 | (*fep->ops->clear_int_events)(dev, int_clr_events); |
| 462 | |
| 463 | if (int_events & fep->ev_err) |
| 464 | (*fep->ops->ev_error)(dev, int_events); |
| 465 | |
| 466 | if (int_events & fep->ev_rx) { |
| 467 | if (!fpi->use_napi) |
| 468 | fs_enet_rx_non_napi(dev); |
| 469 | else { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 470 | napi_ok = napi_schedule_prep(&fep->napi); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 471 | |
| 472 | (*fep->ops->napi_disable_rx)(dev); |
| 473 | (*fep->ops->clear_int_events)(dev, fep->ev_napi_rx); |
| 474 | |
| 475 | /* NOTE: it is possible for FCCs in NAPI mode */ |
| 476 | /* to submit a spurious interrupt while in poll */ |
| 477 | if (napi_ok) |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 478 | __napi_schedule(&fep->napi); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 479 | } |
| 480 | } |
| 481 | |
| 482 | if (int_events & fep->ev_tx) |
| 483 | fs_enet_tx(dev); |
| 484 | } |
| 485 | |
| 486 | handled = nr > 0; |
| 487 | return IRQ_RETVAL(handled); |
| 488 | } |
| 489 | |
| 490 | void fs_init_bds(struct net_device *dev) |
| 491 | { |
| 492 | struct fs_enet_private *fep = netdev_priv(dev); |
Scott Wood | 31a5bb0 | 2007-10-01 14:20:58 -0500 | [diff] [blame] | 493 | cbd_t __iomem *bdp; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 494 | struct sk_buff *skb; |
| 495 | int i; |
| 496 | |
| 497 | fs_cleanup_bds(dev); |
| 498 | |
| 499 | fep->dirty_tx = fep->cur_tx = fep->tx_bd_base; |
| 500 | fep->tx_free = fep->tx_ring; |
| 501 | fep->cur_rx = fep->rx_bd_base; |
| 502 | |
| 503 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 504 | * Initialize the receive buffer descriptors. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 505 | */ |
| 506 | for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) { |
| 507 | skb = dev_alloc_skb(ENET_RX_FRSIZE); |
| 508 | if (skb == NULL) { |
Anatolij Gustschin | fcb6a1c | 2010-02-26 12:00:47 +0000 | [diff] [blame] | 509 | dev_warn(fep->dev, |
| 510 | "Memory squeeze, unable to allocate skb\n"); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 511 | break; |
| 512 | } |
Scott Wood | 0d0d9c1 | 2007-10-01 14:20:52 -0500 | [diff] [blame] | 513 | skb_align(skb, ENET_RX_ALIGN); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 514 | fep->rx_skbuff[i] = skb; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 515 | CBDW_BUFADDR(bdp, |
| 516 | dma_map_single(fep->dev, skb->data, |
| 517 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
| 518 | DMA_FROM_DEVICE)); |
| 519 | CBDW_DATLEN(bdp, 0); /* zero */ |
| 520 | CBDW_SC(bdp, BD_ENET_RX_EMPTY | |
| 521 | ((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP)); |
| 522 | } |
| 523 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 524 | * if we failed, fillup remainder |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 525 | */ |
| 526 | for (; i < fep->rx_ring; i++, bdp++) { |
| 527 | fep->rx_skbuff[i] = NULL; |
| 528 | CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP); |
| 529 | } |
| 530 | |
| 531 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 532 | * ...and the same for transmit. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 533 | */ |
| 534 | for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) { |
| 535 | fep->tx_skbuff[i] = NULL; |
| 536 | CBDW_BUFADDR(bdp, 0); |
| 537 | CBDW_DATLEN(bdp, 0); |
| 538 | CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP); |
| 539 | } |
| 540 | } |
| 541 | |
| 542 | void fs_cleanup_bds(struct net_device *dev) |
| 543 | { |
| 544 | struct fs_enet_private *fep = netdev_priv(dev); |
| 545 | struct sk_buff *skb; |
Scott Wood | 31a5bb0 | 2007-10-01 14:20:58 -0500 | [diff] [blame] | 546 | cbd_t __iomem *bdp; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 547 | int i; |
| 548 | |
| 549 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 550 | * Reset SKB transmit buffers. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 551 | */ |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 552 | 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] | 553 | if ((skb = fep->tx_skbuff[i]) == NULL) |
| 554 | continue; |
| 555 | |
| 556 | /* unmap */ |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 557 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
| 558 | skb->len, DMA_TO_DEVICE); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 559 | |
| 560 | fep->tx_skbuff[i] = NULL; |
| 561 | dev_kfree_skb(skb); |
| 562 | } |
| 563 | |
| 564 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 565 | * Reset SKB receive buffers |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 566 | */ |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 567 | 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] | 568 | if ((skb = fep->rx_skbuff[i]) == NULL) |
| 569 | continue; |
| 570 | |
| 571 | /* unmap */ |
Pantelis Antoniou | 34e30d6 | 2005-10-30 01:22:40 +0300 | [diff] [blame] | 572 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 573 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
| 574 | DMA_FROM_DEVICE); |
| 575 | |
| 576 | fep->rx_skbuff[i] = NULL; |
| 577 | |
| 578 | dev_kfree_skb(skb); |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | /**********************************************************************************/ |
| 583 | |
Anatolij Gustschin | cb395ea | 2010-02-26 12:00:49 +0000 | [diff] [blame] | 584 | #ifdef CONFIG_FS_ENET_MPC5121_FEC |
| 585 | /* |
| 586 | * MPC5121 FEC requeries 4-byte alignment for TX data buffer! |
| 587 | */ |
| 588 | static struct sk_buff *tx_skb_align_workaround(struct net_device *dev, |
| 589 | struct sk_buff *skb) |
| 590 | { |
| 591 | struct sk_buff *new_skb; |
| 592 | struct fs_enet_private *fep = netdev_priv(dev); |
| 593 | |
| 594 | /* Alloc new skb */ |
| 595 | new_skb = dev_alloc_skb(skb->len + 4); |
| 596 | if (!new_skb) { |
| 597 | if (net_ratelimit()) { |
| 598 | dev_warn(fep->dev, |
| 599 | "Memory squeeze, dropping tx packet.\n"); |
| 600 | } |
| 601 | return NULL; |
| 602 | } |
| 603 | |
| 604 | /* Make sure new skb is properly aligned */ |
| 605 | skb_align(new_skb, 4); |
| 606 | |
| 607 | /* Copy data to new skb ... */ |
| 608 | skb_copy_from_linear_data(skb, new_skb->data, skb->len); |
| 609 | skb_put(new_skb, skb->len); |
| 610 | |
| 611 | /* ... and free an old one */ |
| 612 | dev_kfree_skb_any(skb); |
| 613 | |
| 614 | return new_skb; |
| 615 | } |
| 616 | #endif |
| 617 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 618 | static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 619 | { |
| 620 | struct fs_enet_private *fep = netdev_priv(dev); |
Scott Wood | 31a5bb0 | 2007-10-01 14:20:58 -0500 | [diff] [blame] | 621 | cbd_t __iomem *bdp; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 622 | int curidx; |
| 623 | u16 sc; |
| 624 | unsigned long flags; |
| 625 | |
Anatolij Gustschin | cb395ea | 2010-02-26 12:00:49 +0000 | [diff] [blame] | 626 | #ifdef CONFIG_FS_ENET_MPC5121_FEC |
| 627 | if (((unsigned long)skb->data) & 0x3) { |
| 628 | skb = tx_skb_align_workaround(dev, skb); |
| 629 | if (!skb) { |
| 630 | /* |
| 631 | * We have lost packet due to memory allocation error |
| 632 | * in tx_skb_align_workaround(). Hopefully original |
| 633 | * skb is still valid, so try transmit it later. |
| 634 | */ |
| 635 | return NETDEV_TX_BUSY; |
| 636 | } |
| 637 | } |
| 638 | #endif |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 639 | spin_lock_irqsave(&fep->tx_lock, flags); |
| 640 | |
| 641 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 642 | * Fill in a Tx ring entry |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 643 | */ |
| 644 | bdp = fep->cur_tx; |
| 645 | |
| 646 | if (!fep->tx_free || (CBDR_SC(bdp) & BD_ENET_TX_READY)) { |
| 647 | netif_stop_queue(dev); |
| 648 | spin_unlock_irqrestore(&fep->tx_lock, flags); |
| 649 | |
| 650 | /* |
| 651 | * Ooops. All transmit buffers are full. Bail out. |
| 652 | * This should not happen, since the tx queue should be stopped. |
| 653 | */ |
Anatolij Gustschin | fcb6a1c | 2010-02-26 12:00:47 +0000 | [diff] [blame] | 654 | dev_warn(fep->dev, "tx queue full!.\n"); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 655 | return NETDEV_TX_BUSY; |
| 656 | } |
| 657 | |
| 658 | curidx = bdp - fep->tx_bd_base; |
| 659 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 660 | * Clear all of the status flags. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 661 | */ |
| 662 | CBDC_SC(bdp, BD_ENET_TX_STATS); |
| 663 | |
| 664 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 665 | * Save skb pointer. |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 666 | */ |
| 667 | fep->tx_skbuff[curidx] = skb; |
| 668 | |
| 669 | fep->stats.tx_bytes += skb->len; |
| 670 | |
| 671 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 672 | * 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] | 673 | */ |
| 674 | CBDW_BUFADDR(bdp, dma_map_single(fep->dev, |
| 675 | skb->data, skb->len, DMA_TO_DEVICE)); |
| 676 | CBDW_DATLEN(bdp, skb->len); |
| 677 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 678 | /* |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 679 | * 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] | 680 | */ |
| 681 | if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0) |
| 682 | fep->cur_tx++; |
| 683 | else |
| 684 | fep->cur_tx = fep->tx_bd_base; |
| 685 | |
| 686 | if (!--fep->tx_free) |
| 687 | netif_stop_queue(dev); |
| 688 | |
| 689 | /* Trigger transmission start */ |
| 690 | sc = BD_ENET_TX_READY | BD_ENET_TX_INTR | |
| 691 | BD_ENET_TX_LAST | BD_ENET_TX_TC; |
| 692 | |
| 693 | /* note that while FEC does not have this bit |
| 694 | * it marks it as available for software use |
| 695 | * yay for hw reuse :) */ |
| 696 | if (skb->len <= 60) |
| 697 | sc |= BD_ENET_TX_PAD; |
| 698 | CBDS_SC(bdp, sc); |
| 699 | |
Richard Cochran | e309721 | 2011-06-19 21:51:29 +0000 | [diff] [blame] | 700 | skb_tx_timestamp(skb); |
| 701 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 702 | (*fep->ops->tx_kickstart)(dev); |
| 703 | |
| 704 | spin_unlock_irqrestore(&fep->tx_lock, flags); |
| 705 | |
| 706 | return NETDEV_TX_OK; |
| 707 | } |
| 708 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 709 | static void fs_timeout(struct net_device *dev) |
| 710 | { |
| 711 | struct fs_enet_private *fep = netdev_priv(dev); |
| 712 | unsigned long flags; |
| 713 | int wake = 0; |
| 714 | |
| 715 | fep->stats.tx_errors++; |
| 716 | |
| 717 | spin_lock_irqsave(&fep->lock, flags); |
| 718 | |
| 719 | if (dev->flags & IFF_UP) { |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 720 | phy_stop(fep->phydev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 721 | (*fep->ops->stop)(dev); |
| 722 | (*fep->ops->restart)(dev); |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 723 | phy_start(fep->phydev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 724 | } |
| 725 | |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 726 | phy_start(fep->phydev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 727 | wake = fep->tx_free && !(CBDR_SC(fep->cur_tx) & BD_ENET_TX_READY); |
| 728 | spin_unlock_irqrestore(&fep->lock, flags); |
| 729 | |
| 730 | if (wake) |
| 731 | netif_wake_queue(dev); |
| 732 | } |
| 733 | |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 734 | /*----------------------------------------------------------------------------- |
| 735 | * generic link-change handler - should be sufficient for most cases |
| 736 | *-----------------------------------------------------------------------------*/ |
| 737 | static void generic_adjust_link(struct net_device *dev) |
| 738 | { |
Scott Wood | 0fb300f | 2007-10-01 14:20:17 -0500 | [diff] [blame] | 739 | struct fs_enet_private *fep = netdev_priv(dev); |
| 740 | struct phy_device *phydev = fep->phydev; |
| 741 | int new_state = 0; |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 742 | |
Scott Wood | 0fb300f | 2007-10-01 14:20:17 -0500 | [diff] [blame] | 743 | if (phydev->link) { |
| 744 | /* adjust to duplex mode */ |
| 745 | if (phydev->duplex != fep->oldduplex) { |
| 746 | new_state = 1; |
| 747 | fep->oldduplex = phydev->duplex; |
| 748 | } |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 749 | |
Scott Wood | 0fb300f | 2007-10-01 14:20:17 -0500 | [diff] [blame] | 750 | if (phydev->speed != fep->oldspeed) { |
| 751 | new_state = 1; |
| 752 | fep->oldspeed = phydev->speed; |
| 753 | } |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 754 | |
Scott Wood | 0fb300f | 2007-10-01 14:20:17 -0500 | [diff] [blame] | 755 | if (!fep->oldlink) { |
| 756 | new_state = 1; |
| 757 | fep->oldlink = 1; |
Scott Wood | 0fb300f | 2007-10-01 14:20:17 -0500 | [diff] [blame] | 758 | } |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 759 | |
Scott Wood | 0fb300f | 2007-10-01 14:20:17 -0500 | [diff] [blame] | 760 | if (new_state) |
| 761 | fep->ops->restart(dev); |
| 762 | } else if (fep->oldlink) { |
| 763 | new_state = 1; |
| 764 | fep->oldlink = 0; |
| 765 | fep->oldspeed = 0; |
| 766 | fep->oldduplex = -1; |
Scott Wood | 0fb300f | 2007-10-01 14:20:17 -0500 | [diff] [blame] | 767 | } |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 768 | |
Scott Wood | 0fb300f | 2007-10-01 14:20:17 -0500 | [diff] [blame] | 769 | if (new_state && netif_msg_link(fep)) |
| 770 | phy_print_status(phydev); |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 771 | } |
| 772 | |
| 773 | |
| 774 | static void fs_adjust_link(struct net_device *dev) |
| 775 | { |
| 776 | struct fs_enet_private *fep = netdev_priv(dev); |
| 777 | unsigned long flags; |
| 778 | |
| 779 | spin_lock_irqsave(&fep->lock, flags); |
| 780 | |
| 781 | if(fep->ops->adjust_link) |
| 782 | fep->ops->adjust_link(dev); |
| 783 | else |
| 784 | generic_adjust_link(dev); |
| 785 | |
| 786 | spin_unlock_irqrestore(&fep->lock, flags); |
| 787 | } |
| 788 | |
| 789 | static int fs_init_phy(struct net_device *dev) |
| 790 | { |
| 791 | struct fs_enet_private *fep = netdev_priv(dev); |
| 792 | struct phy_device *phydev; |
| 793 | |
| 794 | fep->oldlink = 0; |
| 795 | fep->oldspeed = 0; |
| 796 | fep->oldduplex = -1; |
Anton Vorontsov | eedbc70 | 2009-07-16 21:31:36 +0000 | [diff] [blame] | 797 | |
| 798 | phydev = of_phy_connect(dev, fep->fpi->phy_node, &fs_adjust_link, 0, |
| 799 | PHY_INTERFACE_MODE_MII); |
| 800 | if (!phydev) { |
| 801 | phydev = of_phy_connect_fixed_link(dev, &fs_adjust_link, |
| 802 | PHY_INTERFACE_MODE_MII); |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 803 | } |
Anton Vorontsov | eedbc70 | 2009-07-16 21:31:36 +0000 | [diff] [blame] | 804 | if (!phydev) { |
| 805 | dev_err(&dev->dev, "Could not attach to PHY\n"); |
| 806 | return -ENODEV; |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 807 | } |
| 808 | |
| 809 | fep->phydev = phydev; |
| 810 | |
| 811 | return 0; |
| 812 | } |
| 813 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 814 | static int fs_enet_open(struct net_device *dev) |
| 815 | { |
| 816 | struct fs_enet_private *fep = netdev_priv(dev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 817 | int r; |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 818 | int err; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 819 | |
Heiko Schocher | f4f6230 | 2008-08-25 20:20:53 -0500 | [diff] [blame] | 820 | /* to initialize the fep->cur_rx,... */ |
| 821 | /* not doing this, will cause a crash in fs_enet_rx_napi */ |
| 822 | fs_init_bds(fep->ndev); |
| 823 | |
Scott Wood | f860f49 | 2007-10-17 12:42:43 -0500 | [diff] [blame] | 824 | if (fep->fpi->use_napi) |
| 825 | napi_enable(&fep->napi); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 826 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 827 | /* Install our interrupt handler. */ |
Kumar Gala | 31578140 | 2008-09-22 14:52:18 -0700 | [diff] [blame] | 828 | r = request_irq(fep->interrupt, fs_enet_interrupt, IRQF_SHARED, |
| 829 | "fs_enet-mac", dev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 830 | if (r != 0) { |
Anatolij Gustschin | fcb6a1c | 2010-02-26 12:00:47 +0000 | [diff] [blame] | 831 | dev_err(fep->dev, "Could not allocate FS_ENET IRQ!"); |
Scott Wood | f860f49 | 2007-10-17 12:42:43 -0500 | [diff] [blame] | 832 | if (fep->fpi->use_napi) |
| 833 | napi_disable(&fep->napi); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 834 | return -EINVAL; |
| 835 | } |
| 836 | |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 837 | err = fs_init_phy(dev); |
Scott Wood | f860f49 | 2007-10-17 12:42:43 -0500 | [diff] [blame] | 838 | if (err) { |
Mike Ditto | d7e094d | 2009-01-14 20:43:43 -0800 | [diff] [blame] | 839 | free_irq(fep->interrupt, dev); |
Scott Wood | f860f49 | 2007-10-17 12:42:43 -0500 | [diff] [blame] | 840 | if (fep->fpi->use_napi) |
| 841 | napi_disable(&fep->napi); |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 842 | return err; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 843 | } |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 844 | phy_start(fep->phydev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 845 | |
Anton Vorontsov | c8f1568 | 2008-07-22 15:41:24 -0700 | [diff] [blame] | 846 | netif_start_queue(dev); |
| 847 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 848 | return 0; |
| 849 | } |
| 850 | |
| 851 | static int fs_enet_close(struct net_device *dev) |
| 852 | { |
| 853 | struct fs_enet_private *fep = netdev_priv(dev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 854 | unsigned long flags; |
| 855 | |
| 856 | netif_stop_queue(dev); |
| 857 | netif_carrier_off(dev); |
Laurent Pinchart | 9a3c243 | 2008-04-11 14:05:50 +0200 | [diff] [blame] | 858 | if (fep->fpi->use_napi) |
| 859 | napi_disable(&fep->napi); |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 860 | phy_stop(fep->phydev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 861 | |
| 862 | spin_lock_irqsave(&fep->lock, flags); |
Vitaly Bordug | aa90f50 | 2007-09-18 20:05:27 +0400 | [diff] [blame] | 863 | spin_lock(&fep->tx_lock); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 864 | (*fep->ops->stop)(dev); |
Vitaly Bordug | aa90f50 | 2007-09-18 20:05:27 +0400 | [diff] [blame] | 865 | spin_unlock(&fep->tx_lock); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 866 | spin_unlock_irqrestore(&fep->lock, flags); |
| 867 | |
| 868 | /* release any irqs */ |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 869 | phy_disconnect(fep->phydev); |
| 870 | fep->phydev = NULL; |
Kumar Gala | 31578140 | 2008-09-22 14:52:18 -0700 | [diff] [blame] | 871 | free_irq(fep->interrupt, dev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 872 | |
| 873 | return 0; |
| 874 | } |
| 875 | |
| 876 | static struct net_device_stats *fs_enet_get_stats(struct net_device *dev) |
| 877 | { |
| 878 | struct fs_enet_private *fep = netdev_priv(dev); |
| 879 | return &fep->stats; |
| 880 | } |
| 881 | |
| 882 | /*************************************************************************/ |
| 883 | |
| 884 | static void fs_get_drvinfo(struct net_device *dev, |
| 885 | struct ethtool_drvinfo *info) |
| 886 | { |
| 887 | strcpy(info->driver, DRV_MODULE_NAME); |
| 888 | strcpy(info->version, DRV_MODULE_VERSION); |
| 889 | } |
| 890 | |
| 891 | static int fs_get_regs_len(struct net_device *dev) |
| 892 | { |
| 893 | struct fs_enet_private *fep = netdev_priv(dev); |
| 894 | |
| 895 | return (*fep->ops->get_regs_len)(dev); |
| 896 | } |
| 897 | |
| 898 | static void fs_get_regs(struct net_device *dev, struct ethtool_regs *regs, |
| 899 | void *p) |
| 900 | { |
| 901 | struct fs_enet_private *fep = netdev_priv(dev); |
| 902 | unsigned long flags; |
| 903 | int r, len; |
| 904 | |
| 905 | len = regs->len; |
| 906 | |
| 907 | spin_lock_irqsave(&fep->lock, flags); |
| 908 | r = (*fep->ops->get_regs)(dev, p, &len); |
| 909 | spin_unlock_irqrestore(&fep->lock, flags); |
| 910 | |
| 911 | if (r == 0) |
| 912 | regs->version = 0; |
| 913 | } |
| 914 | |
| 915 | static int fs_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 916 | { |
| 917 | struct fs_enet_private *fep = netdev_priv(dev); |
Anton Vorontsov | dfd9a42 | 2008-01-08 22:05:55 +0300 | [diff] [blame] | 918 | |
| 919 | if (!fep->phydev) |
| 920 | return -ENODEV; |
| 921 | |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 922 | return phy_ethtool_gset(fep->phydev, cmd); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 923 | } |
| 924 | |
| 925 | static int fs_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 926 | { |
| 927 | struct fs_enet_private *fep = netdev_priv(dev); |
Anton Vorontsov | dfd9a42 | 2008-01-08 22:05:55 +0300 | [diff] [blame] | 928 | |
| 929 | if (!fep->phydev) |
| 930 | return -ENODEV; |
| 931 | |
| 932 | return phy_ethtool_sset(fep->phydev, cmd); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 933 | } |
| 934 | |
| 935 | static int fs_nway_reset(struct net_device *dev) |
| 936 | { |
Vitaly Bordug | 5b4b845 | 2006-08-14 23:00:30 -0700 | [diff] [blame] | 937 | return 0; |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 938 | } |
| 939 | |
| 940 | static u32 fs_get_msglevel(struct net_device *dev) |
| 941 | { |
| 942 | struct fs_enet_private *fep = netdev_priv(dev); |
| 943 | return fep->msg_enable; |
| 944 | } |
| 945 | |
| 946 | static void fs_set_msglevel(struct net_device *dev, u32 value) |
| 947 | { |
| 948 | struct fs_enet_private *fep = netdev_priv(dev); |
| 949 | fep->msg_enable = value; |
| 950 | } |
| 951 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 952 | static const struct ethtool_ops fs_ethtool_ops = { |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 953 | .get_drvinfo = fs_get_drvinfo, |
| 954 | .get_regs_len = fs_get_regs_len, |
| 955 | .get_settings = fs_get_settings, |
| 956 | .set_settings = fs_set_settings, |
| 957 | .nway_reset = fs_nway_reset, |
| 958 | .get_link = ethtool_op_get_link, |
| 959 | .get_msglevel = fs_get_msglevel, |
| 960 | .set_msglevel = fs_set_msglevel, |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 961 | .get_regs = fs_get_regs, |
| 962 | }; |
| 963 | |
| 964 | static int fs_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 965 | { |
| 966 | struct fs_enet_private *fep = netdev_priv(dev); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 967 | |
| 968 | if (!netif_running(dev)) |
| 969 | return -EINVAL; |
| 970 | |
Richard Cochran | 28b0411 | 2010-07-17 08:48:55 +0000 | [diff] [blame] | 971 | return phy_mii_ioctl(fep->phydev, rq, cmd); |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 972 | } |
| 973 | |
| 974 | extern int fs_mii_connect(struct net_device *dev); |
| 975 | extern void fs_mii_disconnect(struct net_device *dev); |
| 976 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 977 | /**************************************************************************************/ |
| 978 | |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 979 | #ifdef CONFIG_FS_ENET_HAS_FEC |
| 980 | #define IS_FEC(match) ((match)->data == &fs_fec_ops) |
| 981 | #else |
| 982 | #define IS_FEC(match) 0 |
| 983 | #endif |
| 984 | |
Alexander Beregalov | 8c02acd | 2009-04-09 04:46:53 +0000 | [diff] [blame] | 985 | static const struct net_device_ops fs_enet_netdev_ops = { |
| 986 | .ndo_open = fs_enet_open, |
| 987 | .ndo_stop = fs_enet_close, |
| 988 | .ndo_get_stats = fs_enet_get_stats, |
| 989 | .ndo_start_xmit = fs_enet_start_xmit, |
| 990 | .ndo_tx_timeout = fs_timeout, |
| 991 | .ndo_set_multicast_list = fs_set_multicast_list, |
| 992 | .ndo_do_ioctl = fs_ioctl, |
| 993 | .ndo_validate_addr = eth_validate_addr, |
| 994 | .ndo_set_mac_address = eth_mac_addr, |
| 995 | .ndo_change_mtu = eth_change_mtu, |
| 996 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 997 | .ndo_poll_controller = fs_enet_netpoll, |
| 998 | #endif |
| 999 | }; |
| 1000 | |
Grant Likely | b1608d6 | 2011-05-18 11:19:24 -0600 | [diff] [blame] | 1001 | static struct of_device_id fs_enet_match[]; |
Grant Likely | 7488876 | 2011-02-22 21:05:51 -0700 | [diff] [blame] | 1002 | static int __devinit fs_enet_probe(struct platform_device *ofdev) |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1003 | { |
Grant Likely | b1608d6 | 2011-05-18 11:19:24 -0600 | [diff] [blame] | 1004 | const struct of_device_id *match; |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1005 | struct net_device *ndev; |
| 1006 | struct fs_enet_private *fep; |
| 1007 | struct fs_platform_info *fpi; |
| 1008 | const u32 *data; |
| 1009 | const u8 *mac_addr; |
| 1010 | int privsize, len, ret = -ENODEV; |
| 1011 | |
Grant Likely | b1608d6 | 2011-05-18 11:19:24 -0600 | [diff] [blame] | 1012 | match = of_match_device(fs_enet_match, &ofdev->dev); |
| 1013 | if (!match) |
Grant Likely | 7488876 | 2011-02-22 21:05:51 -0700 | [diff] [blame] | 1014 | return -EINVAL; |
| 1015 | |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1016 | fpi = kzalloc(sizeof(*fpi), GFP_KERNEL); |
| 1017 | if (!fpi) |
| 1018 | return -ENOMEM; |
| 1019 | |
Grant Likely | b1608d6 | 2011-05-18 11:19:24 -0600 | [diff] [blame] | 1020 | if (!IS_FEC(match)) { |
Grant Likely | 61c7a08 | 2010-04-13 16:12:29 -0700 | [diff] [blame] | 1021 | data = of_get_property(ofdev->dev.of_node, "fsl,cpm-command", &len); |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1022 | if (!data || len != 4) |
| 1023 | goto out_free_fpi; |
| 1024 | |
| 1025 | fpi->cp_command = *data; |
| 1026 | } |
| 1027 | |
| 1028 | fpi->rx_ring = 32; |
| 1029 | fpi->tx_ring = 32; |
| 1030 | fpi->rx_copybreak = 240; |
Scott Wood | f860f49 | 2007-10-17 12:42:43 -0500 | [diff] [blame] | 1031 | fpi->use_napi = 1; |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1032 | fpi->napi_weight = 17; |
Grant Likely | 61c7a08 | 2010-04-13 16:12:29 -0700 | [diff] [blame] | 1033 | fpi->phy_node = of_parse_phandle(ofdev->dev.of_node, "phy-handle", 0); |
| 1034 | if ((!fpi->phy_node) && (!of_get_property(ofdev->dev.of_node, "fixed-link", |
Grant Likely | aa73832 | 2009-04-25 12:53:33 +0000 | [diff] [blame] | 1035 | NULL))) |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1036 | goto out_free_fpi; |
| 1037 | |
| 1038 | privsize = sizeof(*fep) + |
| 1039 | sizeof(struct sk_buff **) * |
| 1040 | (fpi->rx_ring + fpi->tx_ring); |
| 1041 | |
| 1042 | ndev = alloc_etherdev(privsize); |
| 1043 | if (!ndev) { |
| 1044 | ret = -ENOMEM; |
Julia Lawall | e8f7f43 | 2010-09-04 00:12:43 +0000 | [diff] [blame] | 1045 | goto out_put; |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1046 | } |
| 1047 | |
Anton Vorontsov | eedbc70 | 2009-07-16 21:31:36 +0000 | [diff] [blame] | 1048 | SET_NETDEV_DEV(ndev, &ofdev->dev); |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1049 | dev_set_drvdata(&ofdev->dev, ndev); |
| 1050 | |
| 1051 | fep = netdev_priv(ndev); |
| 1052 | fep->dev = &ofdev->dev; |
Scott Wood | f860f49 | 2007-10-17 12:42:43 -0500 | [diff] [blame] | 1053 | fep->ndev = ndev; |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1054 | fep->fpi = fpi; |
Grant Likely | b1608d6 | 2011-05-18 11:19:24 -0600 | [diff] [blame] | 1055 | fep->ops = match->data; |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1056 | |
| 1057 | ret = fep->ops->setup_data(ndev); |
| 1058 | if (ret) |
| 1059 | goto out_free_dev; |
| 1060 | |
| 1061 | fep->rx_skbuff = (struct sk_buff **)&fep[1]; |
| 1062 | fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring; |
| 1063 | |
| 1064 | spin_lock_init(&fep->lock); |
| 1065 | spin_lock_init(&fep->tx_lock); |
| 1066 | |
Grant Likely | 61c7a08 | 2010-04-13 16:12:29 -0700 | [diff] [blame] | 1067 | mac_addr = of_get_mac_address(ofdev->dev.of_node); |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1068 | if (mac_addr) |
| 1069 | memcpy(ndev->dev_addr, mac_addr, 6); |
| 1070 | |
| 1071 | ret = fep->ops->allocate_bd(ndev); |
| 1072 | if (ret) |
| 1073 | goto out_cleanup_data; |
| 1074 | |
| 1075 | fep->rx_bd_base = fep->ring_base; |
| 1076 | fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring; |
| 1077 | |
| 1078 | fep->tx_ring = fpi->tx_ring; |
| 1079 | fep->rx_ring = fpi->rx_ring; |
| 1080 | |
Alexander Beregalov | 8c02acd | 2009-04-09 04:46:53 +0000 | [diff] [blame] | 1081 | ndev->netdev_ops = &fs_enet_netdev_ops; |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1082 | ndev->watchdog_timeo = 2 * HZ; |
Scott Wood | f860f49 | 2007-10-17 12:42:43 -0500 | [diff] [blame] | 1083 | if (fpi->use_napi) |
| 1084 | netif_napi_add(ndev, &fep->napi, fs_enet_rx_napi, |
| 1085 | fpi->napi_weight); |
| 1086 | |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1087 | ndev->ethtool_ops = &fs_ethtool_ops; |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1088 | |
| 1089 | init_timer(&fep->phy_timer_list); |
| 1090 | |
| 1091 | netif_carrier_off(ndev); |
| 1092 | |
| 1093 | ret = register_netdev(ndev); |
| 1094 | if (ret) |
| 1095 | goto out_free_bd; |
| 1096 | |
Anatolij Gustschin | fcb6a1c | 2010-02-26 12:00:47 +0000 | [diff] [blame] | 1097 | pr_info("%s: fs_enet: %pM\n", ndev->name, ndev->dev_addr); |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1098 | |
| 1099 | return 0; |
| 1100 | |
| 1101 | out_free_bd: |
| 1102 | fep->ops->free_bd(ndev); |
| 1103 | out_cleanup_data: |
| 1104 | fep->ops->cleanup_data(ndev); |
| 1105 | out_free_dev: |
| 1106 | free_netdev(ndev); |
| 1107 | dev_set_drvdata(&ofdev->dev, NULL); |
Julia Lawall | e8f7f43 | 2010-09-04 00:12:43 +0000 | [diff] [blame] | 1108 | out_put: |
Grant Likely | aa73832 | 2009-04-25 12:53:33 +0000 | [diff] [blame] | 1109 | of_node_put(fpi->phy_node); |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1110 | out_free_fpi: |
| 1111 | kfree(fpi); |
| 1112 | return ret; |
| 1113 | } |
| 1114 | |
Grant Likely | 2dc1158 | 2010-08-06 09:25:50 -0600 | [diff] [blame] | 1115 | static int fs_enet_remove(struct platform_device *ofdev) |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1116 | { |
| 1117 | struct net_device *ndev = dev_get_drvdata(&ofdev->dev); |
| 1118 | struct fs_enet_private *fep = netdev_priv(ndev); |
| 1119 | |
| 1120 | unregister_netdev(ndev); |
| 1121 | |
| 1122 | fep->ops->free_bd(ndev); |
| 1123 | fep->ops->cleanup_data(ndev); |
| 1124 | dev_set_drvdata(fep->dev, NULL); |
Grant Likely | aa73832 | 2009-04-25 12:53:33 +0000 | [diff] [blame] | 1125 | of_node_put(fep->fpi->phy_node); |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1126 | free_netdev(ndev); |
| 1127 | return 0; |
| 1128 | } |
| 1129 | |
| 1130 | static struct of_device_id fs_enet_match[] = { |
| 1131 | #ifdef CONFIG_FS_ENET_HAS_SCC |
| 1132 | { |
| 1133 | .compatible = "fsl,cpm1-scc-enet", |
| 1134 | .data = (void *)&fs_scc_ops, |
| 1135 | }, |
Heiko Schocher | f4f6230 | 2008-08-25 20:20:53 -0500 | [diff] [blame] | 1136 | { |
| 1137 | .compatible = "fsl,cpm2-scc-enet", |
| 1138 | .data = (void *)&fs_scc_ops, |
| 1139 | }, |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1140 | #endif |
| 1141 | #ifdef CONFIG_FS_ENET_HAS_FCC |
| 1142 | { |
| 1143 | .compatible = "fsl,cpm2-fcc-enet", |
| 1144 | .data = (void *)&fs_fcc_ops, |
| 1145 | }, |
| 1146 | #endif |
| 1147 | #ifdef CONFIG_FS_ENET_HAS_FEC |
Anatolij Gustschin | 60ab436 | 2010-02-26 12:00:48 +0000 | [diff] [blame] | 1148 | #ifdef CONFIG_FS_ENET_MPC5121_FEC |
| 1149 | { |
| 1150 | .compatible = "fsl,mpc5121-fec", |
| 1151 | .data = (void *)&fs_fec_ops, |
| 1152 | }, |
| 1153 | #else |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1154 | { |
| 1155 | .compatible = "fsl,pq1-fec-enet", |
| 1156 | .data = (void *)&fs_fec_ops, |
| 1157 | }, |
| 1158 | #endif |
Anatolij Gustschin | 60ab436 | 2010-02-26 12:00:48 +0000 | [diff] [blame] | 1159 | #endif |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1160 | {} |
| 1161 | }; |
Anton Vorontsov | e72701a | 2009-10-14 14:54:52 -0700 | [diff] [blame] | 1162 | MODULE_DEVICE_TABLE(of, fs_enet_match); |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1163 | |
Grant Likely | 7488876 | 2011-02-22 21:05:51 -0700 | [diff] [blame] | 1164 | static struct platform_driver fs_enet_driver = { |
Grant Likely | 4018294 | 2010-04-13 16:13:02 -0700 | [diff] [blame] | 1165 | .driver = { |
| 1166 | .owner = THIS_MODULE, |
| 1167 | .name = "fs_enet", |
| 1168 | .of_match_table = fs_enet_match, |
| 1169 | }, |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1170 | .probe = fs_enet_probe, |
| 1171 | .remove = fs_enet_remove, |
| 1172 | }; |
| 1173 | |
| 1174 | static int __init fs_init(void) |
| 1175 | { |
Grant Likely | 7488876 | 2011-02-22 21:05:51 -0700 | [diff] [blame] | 1176 | return platform_driver_register(&fs_enet_driver); |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1177 | } |
| 1178 | |
| 1179 | static void __exit fs_cleanup(void) |
| 1180 | { |
Grant Likely | 7488876 | 2011-02-22 21:05:51 -0700 | [diff] [blame] | 1181 | platform_driver_unregister(&fs_enet_driver); |
Scott Wood | 976de6a | 2007-10-02 10:55:58 -0500 | [diff] [blame] | 1182 | } |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 1183 | |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 1184 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1185 | static void fs_enet_netpoll(struct net_device *dev) |
| 1186 | { |
| 1187 | disable_irq(dev->irq); |
Alexey Dobriyan | 7385d59 | 2008-11-02 17:49:59 +0300 | [diff] [blame] | 1188 | fs_enet_interrupt(dev->irq, dev); |
Vitaly Bordug | 9b8ee8e | 2007-09-18 20:05:35 +0400 | [diff] [blame] | 1189 | enable_irq(dev->irq); |
| 1190 | } |
| 1191 | #endif |
| 1192 | |
Pantelis Antoniou | 48257c4 | 2005-10-28 16:25:58 -0400 | [diff] [blame] | 1193 | /**************************************************************************************/ |
| 1194 | |
| 1195 | module_init(fs_init); |
| 1196 | module_exit(fs_cleanup); |