Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1997-2000 LAN Media Corporation (LMC) |
| 3 | * All rights reserved. www.lanmedia.com |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 4 | * Generic HDLC port Copyright (C) 2008 Krzysztof Halasa <khc@pm.waw.pl> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * |
| 6 | * This code is written by: |
| 7 | * Andrew Stanley-Jones (asj@cban.com) |
| 8 | * Rob Braun (bbraun@vix.com), |
| 9 | * Michael Graff (explorer@vix.com) and |
| 10 | * Matt Thomas (matt@3am-software.com). |
| 11 | * |
| 12 | * With Help By: |
| 13 | * David Boggs |
| 14 | * Ron Crane |
| 15 | * Alan Cox |
| 16 | * |
| 17 | * This software may be used and distributed according to the terms |
| 18 | * of the GNU General Public License version 2, incorporated herein by reference. |
| 19 | * |
| 20 | * Driver for the LanMedia LMC5200, LMC5245, LMC1000, LMC1200 cards. |
| 21 | * |
| 22 | * To control link specific options lmcctl is required. |
| 23 | * It can be obtained from ftp.lanmedia.com. |
| 24 | * |
| 25 | * Linux driver notes: |
| 26 | * Linux uses the device struct lmc_private to pass private information |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 27 | * around. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | * |
| 29 | * The initialization portion of this driver (the lmc_reset() and the |
| 30 | * lmc_dec_reset() functions, as well as the led controls and the |
| 31 | * lmc_initcsrs() functions. |
| 32 | * |
| 33 | * The watchdog function runs every second and checks to see if |
| 34 | * we still have link, and that the timing source is what we expected |
| 35 | * it to be. If link is lost, the interface is marked down, and |
| 36 | * we no longer can transmit. |
| 37 | * |
| 38 | */ |
| 39 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <linux/kernel.h> |
| 41 | #include <linux/module.h> |
| 42 | #include <linux/string.h> |
| 43 | #include <linux/timer.h> |
| 44 | #include <linux/ptrace.h> |
| 45 | #include <linux/errno.h> |
| 46 | #include <linux/ioport.h> |
| 47 | #include <linux/slab.h> |
| 48 | #include <linux/interrupt.h> |
| 49 | #include <linux/pci.h> |
| 50 | #include <linux/delay.h> |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 51 | #include <linux/hdlc.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #include <linux/in.h> |
| 53 | #include <linux/if_arp.h> |
| 54 | #include <linux/netdevice.h> |
| 55 | #include <linux/etherdevice.h> |
| 56 | #include <linux/skbuff.h> |
| 57 | #include <linux/inet.h> |
| 58 | #include <linux/bitops.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | #include <asm/processor.h> /* Processor type for cache alignment. */ |
| 60 | #include <asm/io.h> |
| 61 | #include <asm/dma.h> |
| 62 | #include <asm/uaccess.h> |
| 63 | //#include <asm/spinlock.h> |
| 64 | |
| 65 | #define DRIVER_MAJOR_VERSION 1 |
| 66 | #define DRIVER_MINOR_VERSION 34 |
| 67 | #define DRIVER_SUB_VERSION 0 |
| 68 | |
| 69 | #define DRIVER_VERSION ((DRIVER_MAJOR_VERSION << 8) + DRIVER_MINOR_VERSION) |
| 70 | |
| 71 | #include "lmc.h" |
| 72 | #include "lmc_var.h" |
| 73 | #include "lmc_ioctl.h" |
| 74 | #include "lmc_debug.h" |
| 75 | #include "lmc_proto.h" |
| 76 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | static int LMC_PKT_BUF_SZ = 1542; |
| 78 | |
Benoit Taine | 9baa3c3 | 2014-08-08 15:56:03 +0200 | [diff] [blame] | 79 | static const struct pci_device_id lmc_pci_tbl[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_FAST, |
| 81 | PCI_VENDOR_ID_LMC, PCI_ANY_ID }, |
| 82 | { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_FAST, |
| 83 | PCI_ANY_ID, PCI_VENDOR_ID_LMC }, |
| 84 | { 0 } |
| 85 | }; |
| 86 | |
| 87 | MODULE_DEVICE_TABLE(pci, lmc_pci_tbl); |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 88 | MODULE_LICENSE("GPL v2"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | |
| 90 | |
Stephen Hemminger | d71a674 | 2009-08-31 19:50:47 +0000 | [diff] [blame] | 91 | static netdev_tx_t lmc_start_xmit(struct sk_buff *skb, |
| 92 | struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | static int lmc_rx (struct net_device *dev); |
| 94 | static int lmc_open(struct net_device *dev); |
| 95 | static int lmc_close(struct net_device *dev); |
| 96 | static struct net_device_stats *lmc_get_stats(struct net_device *dev); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 97 | static irqreturn_t lmc_interrupt(int irq, void *dev_instance); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | static void lmc_initcsrs(lmc_softc_t * const sc, lmc_csrptr_t csr_base, size_t csr_size); |
| 99 | static void lmc_softreset(lmc_softc_t * const); |
| 100 | static void lmc_running_reset(struct net_device *dev); |
| 101 | static int lmc_ifdown(struct net_device * const); |
| 102 | static void lmc_watchdog(unsigned long data); |
| 103 | static void lmc_reset(lmc_softc_t * const sc); |
| 104 | static void lmc_dec_reset(lmc_softc_t * const sc); |
| 105 | static void lmc_driver_timeout(struct net_device *dev); |
| 106 | |
| 107 | /* |
| 108 | * linux reserves 16 device specific IOCTLs. We call them |
| 109 | * LMCIOC* to control various bits of our world. |
| 110 | */ |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 111 | int lmc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | { |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 113 | lmc_softc_t *sc = dev_to_sc(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | lmc_ctl_t ctl; |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 115 | int ret = -EOPNOTSUPP; |
| 116 | u16 regVal; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | unsigned long flags; |
| 118 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | lmc_trace(dev, "lmc_ioctl in"); |
| 120 | |
| 121 | /* |
| 122 | * Most functions mess with the structure |
| 123 | * Disable interrupts while we do the polling |
| 124 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | |
| 126 | switch (cmd) { |
| 127 | /* |
| 128 | * Return current driver state. Since we keep this up |
| 129 | * To date internally, just copy this out to the user. |
| 130 | */ |
| 131 | case LMCIOCGINFO: /*fold01*/ |
Roel Kluin | e3376dc | 2007-10-30 01:11:46 -0700 | [diff] [blame] | 132 | if (copy_to_user(ifr->ifr_data, &sc->ictl, sizeof(lmc_ctl_t))) |
| 133 | ret = -EFAULT; |
| 134 | else |
| 135 | ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | break; |
| 137 | |
| 138 | case LMCIOCSINFO: /*fold01*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | if (!capable(CAP_NET_ADMIN)) { |
| 140 | ret = -EPERM; |
| 141 | break; |
| 142 | } |
| 143 | |
| 144 | if(dev->flags & IFF_UP){ |
| 145 | ret = -EBUSY; |
| 146 | break; |
| 147 | } |
| 148 | |
Roel Kluin | e3376dc | 2007-10-30 01:11:46 -0700 | [diff] [blame] | 149 | if (copy_from_user(&ctl, ifr->ifr_data, sizeof(lmc_ctl_t))) { |
| 150 | ret = -EFAULT; |
| 151 | break; |
| 152 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 154 | spin_lock_irqsave(&sc->lmc_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | sc->lmc_media->set_status (sc, &ctl); |
| 156 | |
| 157 | if(ctl.crc_length != sc->ictl.crc_length) { |
| 158 | sc->lmc_media->set_crc_length(sc, ctl.crc_length); |
| 159 | if (sc->ictl.crc_length == LMC_CTL_CRC_LENGTH_16) |
| 160 | sc->TxDescriptControlInit |= LMC_TDES_ADD_CRC_DISABLE; |
| 161 | else |
| 162 | sc->TxDescriptControlInit &= ~LMC_TDES_ADD_CRC_DISABLE; |
| 163 | } |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 164 | spin_unlock_irqrestore(&sc->lmc_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | ret = 0; |
| 167 | break; |
| 168 | |
| 169 | case LMCIOCIFTYPE: /*fold01*/ |
| 170 | { |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 171 | u16 old_type = sc->if_type; |
| 172 | u16 new_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | |
| 174 | if (!capable(CAP_NET_ADMIN)) { |
| 175 | ret = -EPERM; |
| 176 | break; |
| 177 | } |
| 178 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 179 | if (copy_from_user(&new_type, ifr->ifr_data, sizeof(u16))) { |
Roel Kluin | e3376dc | 2007-10-30 01:11:46 -0700 | [diff] [blame] | 180 | ret = -EFAULT; |
| 181 | break; |
| 182 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | |
| 184 | |
| 185 | if (new_type == old_type) |
| 186 | { |
| 187 | ret = 0 ; |
| 188 | break; /* no change */ |
| 189 | } |
| 190 | |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 191 | spin_lock_irqsave(&sc->lmc_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | lmc_proto_close(sc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | |
| 194 | sc->if_type = new_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | lmc_proto_attach(sc); |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 196 | ret = lmc_proto_open(sc); |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 197 | spin_unlock_irqrestore(&sc->lmc_lock, flags); |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 198 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | } |
| 200 | |
| 201 | case LMCIOCGETXINFO: /*fold01*/ |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 202 | spin_lock_irqsave(&sc->lmc_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | sc->lmc_xinfo.Magic0 = 0xBEEFCAFE; |
| 204 | |
| 205 | sc->lmc_xinfo.PciCardType = sc->lmc_cardtype; |
| 206 | sc->lmc_xinfo.PciSlotNumber = 0; |
| 207 | sc->lmc_xinfo.DriverMajorVersion = DRIVER_MAJOR_VERSION; |
| 208 | sc->lmc_xinfo.DriverMinorVersion = DRIVER_MINOR_VERSION; |
| 209 | sc->lmc_xinfo.DriverSubVersion = DRIVER_SUB_VERSION; |
| 210 | sc->lmc_xinfo.XilinxRevisionNumber = |
| 211 | lmc_mii_readreg (sc, 0, 3) & 0xf; |
| 212 | sc->lmc_xinfo.MaxFrameSize = LMC_PKT_BUF_SZ; |
| 213 | sc->lmc_xinfo.link_status = sc->lmc_media->get_link_status (sc); |
| 214 | sc->lmc_xinfo.mii_reg16 = lmc_mii_readreg (sc, 0, 16); |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 215 | spin_unlock_irqrestore(&sc->lmc_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | |
| 217 | sc->lmc_xinfo.Magic1 = 0xDEADBEEF; |
| 218 | |
| 219 | if (copy_to_user(ifr->ifr_data, &sc->lmc_xinfo, |
Adrian Bunk | 5c41542 | 2007-10-30 15:34:34 -0700 | [diff] [blame] | 220 | sizeof(struct lmc_xinfo))) |
Roel Kluin | e3376dc | 2007-10-30 01:11:46 -0700 | [diff] [blame] | 221 | ret = -EFAULT; |
| 222 | else |
| 223 | ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | |
| 225 | break; |
| 226 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 227 | case LMCIOCGETLMCSTATS: |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 228 | spin_lock_irqsave(&sc->lmc_lock, flags); |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 229 | if (sc->lmc_cardtype == LMC_CARDTYPE_T1) { |
| 230 | lmc_mii_writereg(sc, 0, 17, T1FRAMER_FERR_LSB); |
| 231 | sc->extra_stats.framingBitErrorCount += |
| 232 | lmc_mii_readreg(sc, 0, 18) & 0xff; |
| 233 | lmc_mii_writereg(sc, 0, 17, T1FRAMER_FERR_MSB); |
| 234 | sc->extra_stats.framingBitErrorCount += |
| 235 | (lmc_mii_readreg(sc, 0, 18) & 0xff) << 8; |
| 236 | lmc_mii_writereg(sc, 0, 17, T1FRAMER_LCV_LSB); |
| 237 | sc->extra_stats.lineCodeViolationCount += |
| 238 | lmc_mii_readreg(sc, 0, 18) & 0xff; |
| 239 | lmc_mii_writereg(sc, 0, 17, T1FRAMER_LCV_MSB); |
| 240 | sc->extra_stats.lineCodeViolationCount += |
| 241 | (lmc_mii_readreg(sc, 0, 18) & 0xff) << 8; |
| 242 | lmc_mii_writereg(sc, 0, 17, T1FRAMER_AERR); |
| 243 | regVal = lmc_mii_readreg(sc, 0, 18) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 245 | sc->extra_stats.lossOfFrameCount += |
| 246 | (regVal & T1FRAMER_LOF_MASK) >> 4; |
| 247 | sc->extra_stats.changeOfFrameAlignmentCount += |
| 248 | (regVal & T1FRAMER_COFA_MASK) >> 2; |
| 249 | sc->extra_stats.severelyErroredFrameCount += |
| 250 | regVal & T1FRAMER_SEF_MASK; |
| 251 | } |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 252 | spin_unlock_irqrestore(&sc->lmc_lock, flags); |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 253 | if (copy_to_user(ifr->ifr_data, &sc->lmc_device->stats, |
| 254 | sizeof(sc->lmc_device->stats)) || |
| 255 | copy_to_user(ifr->ifr_data + sizeof(sc->lmc_device->stats), |
| 256 | &sc->extra_stats, sizeof(sc->extra_stats))) |
| 257 | ret = -EFAULT; |
| 258 | else |
| 259 | ret = 0; |
| 260 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 262 | case LMCIOCCLEARLMCSTATS: |
| 263 | if (!capable(CAP_NET_ADMIN)) { |
| 264 | ret = -EPERM; |
| 265 | break; |
| 266 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 268 | spin_lock_irqsave(&sc->lmc_lock, flags); |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 269 | memset(&sc->lmc_device->stats, 0, sizeof(sc->lmc_device->stats)); |
| 270 | memset(&sc->extra_stats, 0, sizeof(sc->extra_stats)); |
| 271 | sc->extra_stats.check = STATCHECK; |
| 272 | sc->extra_stats.version_size = (DRIVER_VERSION << 16) + |
| 273 | sizeof(sc->lmc_device->stats) + sizeof(sc->extra_stats); |
| 274 | sc->extra_stats.lmc_cardtype = sc->lmc_cardtype; |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 275 | spin_unlock_irqrestore(&sc->lmc_lock, flags); |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 276 | ret = 0; |
| 277 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | |
| 279 | case LMCIOCSETCIRCUIT: /*fold01*/ |
| 280 | if (!capable(CAP_NET_ADMIN)){ |
| 281 | ret = -EPERM; |
| 282 | break; |
| 283 | } |
| 284 | |
| 285 | if(dev->flags & IFF_UP){ |
| 286 | ret = -EBUSY; |
| 287 | break; |
| 288 | } |
| 289 | |
Roel Kluin | e3376dc | 2007-10-30 01:11:46 -0700 | [diff] [blame] | 290 | if (copy_from_user(&ctl, ifr->ifr_data, sizeof(lmc_ctl_t))) { |
| 291 | ret = -EFAULT; |
| 292 | break; |
| 293 | } |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 294 | spin_lock_irqsave(&sc->lmc_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | sc->lmc_media->set_circuit_type(sc, ctl.circuit_type); |
| 296 | sc->ictl.circuit_type = ctl.circuit_type; |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 297 | spin_unlock_irqrestore(&sc->lmc_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | ret = 0; |
| 299 | |
| 300 | break; |
| 301 | |
| 302 | case LMCIOCRESET: /*fold01*/ |
| 303 | if (!capable(CAP_NET_ADMIN)){ |
| 304 | ret = -EPERM; |
| 305 | break; |
| 306 | } |
| 307 | |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 308 | spin_lock_irqsave(&sc->lmc_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | /* Reset driver and bring back to current state */ |
| 310 | printk (" REG16 before reset +%04x\n", lmc_mii_readreg (sc, 0, 16)); |
| 311 | lmc_running_reset (dev); |
| 312 | printk (" REG16 after reset +%04x\n", lmc_mii_readreg (sc, 0, 16)); |
| 313 | |
| 314 | LMC_EVENT_LOG(LMC_EVENT_FORCEDRESET, LMC_CSR_READ (sc, csr_status), lmc_mii_readreg (sc, 0, 16)); |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 315 | spin_unlock_irqrestore(&sc->lmc_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | |
| 317 | ret = 0; |
| 318 | break; |
| 319 | |
| 320 | #ifdef DEBUG |
| 321 | case LMCIOCDUMPEVENTLOG: |
Roel Kluin | e3376dc | 2007-10-30 01:11:46 -0700 | [diff] [blame] | 322 | if (copy_to_user(ifr->ifr_data, &lmcEventLogIndex, sizeof(u32))) { |
| 323 | ret = -EFAULT; |
| 324 | break; |
| 325 | } |
Krzysztof Hałasa | 867240f | 2008-07-03 00:39:46 +0200 | [diff] [blame] | 326 | if (copy_to_user(ifr->ifr_data + sizeof(u32), lmcEventLogBuf, |
| 327 | sizeof(lmcEventLogBuf))) |
Roel Kluin | e3376dc | 2007-10-30 01:11:46 -0700 | [diff] [blame] | 328 | ret = -EFAULT; |
| 329 | else |
| 330 | ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | break; |
| 333 | #endif /* end ifdef _DBG_EVENTLOG */ |
| 334 | case LMCIOCT1CONTROL: /*fold01*/ |
| 335 | if (sc->lmc_cardtype != LMC_CARDTYPE_T1){ |
| 336 | ret = -EOPNOTSUPP; |
| 337 | break; |
| 338 | } |
| 339 | break; |
| 340 | case LMCIOCXILINX: /*fold01*/ |
| 341 | { |
| 342 | struct lmc_xilinx_control xc; /*fold02*/ |
| 343 | |
| 344 | if (!capable(CAP_NET_ADMIN)){ |
| 345 | ret = -EPERM; |
| 346 | break; |
| 347 | } |
| 348 | |
| 349 | /* |
| 350 | * Stop the xwitter whlie we restart the hardware |
| 351 | */ |
| 352 | netif_stop_queue(dev); |
| 353 | |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 354 | if (copy_from_user(&xc, ifr->ifr_data, sizeof(struct lmc_xilinx_control))) { |
Roel Kluin | e3376dc | 2007-10-30 01:11:46 -0700 | [diff] [blame] | 355 | ret = -EFAULT; |
| 356 | break; |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 357 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | switch(xc.command){ |
| 359 | case lmc_xilinx_reset: /*fold02*/ |
| 360 | { |
| 361 | u16 mii; |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 362 | spin_lock_irqsave(&sc->lmc_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | mii = lmc_mii_readreg (sc, 0, 16); |
| 364 | |
| 365 | /* |
| 366 | * Make all of them 0 and make input |
| 367 | */ |
| 368 | lmc_gpio_mkinput(sc, 0xff); |
| 369 | |
| 370 | /* |
| 371 | * make the reset output |
| 372 | */ |
| 373 | lmc_gpio_mkoutput(sc, LMC_GEP_RESET); |
| 374 | |
| 375 | /* |
| 376 | * RESET low to force configuration. This also forces |
| 377 | * the transmitter clock to be internal, but we expect to reset |
| 378 | * that later anyway. |
| 379 | */ |
| 380 | |
| 381 | sc->lmc_gpio &= ~LMC_GEP_RESET; |
| 382 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); |
| 383 | |
| 384 | |
| 385 | /* |
| 386 | * hold for more than 10 microseconds |
| 387 | */ |
| 388 | udelay(50); |
| 389 | |
| 390 | sc->lmc_gpio |= LMC_GEP_RESET; |
| 391 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); |
| 392 | |
| 393 | |
| 394 | /* |
| 395 | * stop driving Xilinx-related signals |
| 396 | */ |
| 397 | lmc_gpio_mkinput(sc, 0xff); |
| 398 | |
| 399 | /* Reset the frammer hardware */ |
| 400 | sc->lmc_media->set_link_status (sc, 1); |
| 401 | sc->lmc_media->set_status (sc, NULL); |
| 402 | // lmc_softreset(sc); |
| 403 | |
| 404 | { |
| 405 | int i; |
| 406 | for(i = 0; i < 5; i++){ |
| 407 | lmc_led_on(sc, LMC_DS3_LED0); |
| 408 | mdelay(100); |
| 409 | lmc_led_off(sc, LMC_DS3_LED0); |
| 410 | lmc_led_on(sc, LMC_DS3_LED1); |
| 411 | mdelay(100); |
| 412 | lmc_led_off(sc, LMC_DS3_LED1); |
| 413 | lmc_led_on(sc, LMC_DS3_LED3); |
| 414 | mdelay(100); |
| 415 | lmc_led_off(sc, LMC_DS3_LED3); |
| 416 | lmc_led_on(sc, LMC_DS3_LED2); |
| 417 | mdelay(100); |
| 418 | lmc_led_off(sc, LMC_DS3_LED2); |
| 419 | } |
| 420 | } |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 421 | spin_unlock_irqrestore(&sc->lmc_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | |
| 423 | |
| 424 | |
| 425 | ret = 0x0; |
| 426 | |
| 427 | } |
| 428 | |
| 429 | break; |
| 430 | case lmc_xilinx_load_prom: /*fold02*/ |
| 431 | { |
| 432 | u16 mii; |
| 433 | int timeout = 500000; |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 434 | spin_lock_irqsave(&sc->lmc_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | mii = lmc_mii_readreg (sc, 0, 16); |
| 436 | |
| 437 | /* |
| 438 | * Make all of them 0 and make input |
| 439 | */ |
| 440 | lmc_gpio_mkinput(sc, 0xff); |
| 441 | |
| 442 | /* |
| 443 | * make the reset output |
| 444 | */ |
| 445 | lmc_gpio_mkoutput(sc, LMC_GEP_DP | LMC_GEP_RESET); |
| 446 | |
| 447 | /* |
| 448 | * RESET low to force configuration. This also forces |
| 449 | * the transmitter clock to be internal, but we expect to reset |
| 450 | * that later anyway. |
| 451 | */ |
| 452 | |
| 453 | sc->lmc_gpio &= ~(LMC_GEP_RESET | LMC_GEP_DP); |
| 454 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); |
| 455 | |
| 456 | |
| 457 | /* |
| 458 | * hold for more than 10 microseconds |
| 459 | */ |
| 460 | udelay(50); |
| 461 | |
| 462 | sc->lmc_gpio |= LMC_GEP_DP | LMC_GEP_RESET; |
| 463 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); |
| 464 | |
| 465 | /* |
| 466 | * busy wait for the chip to reset |
| 467 | */ |
| 468 | while( (LMC_CSR_READ(sc, csr_gp) & LMC_GEP_INIT) == 0 && |
| 469 | (timeout-- > 0)) |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 470 | cpu_relax(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | |
| 472 | |
| 473 | /* |
| 474 | * stop driving Xilinx-related signals |
| 475 | */ |
| 476 | lmc_gpio_mkinput(sc, 0xff); |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 477 | spin_unlock_irqrestore(&sc->lmc_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | |
| 479 | ret = 0x0; |
| 480 | |
| 481 | |
| 482 | break; |
| 483 | |
| 484 | } |
| 485 | |
| 486 | case lmc_xilinx_load: /*fold02*/ |
| 487 | { |
| 488 | char *data; |
| 489 | int pos; |
| 490 | int timeout = 500000; |
| 491 | |
Al Viro | 79ea13c | 2008-01-24 02:06:46 -0800 | [diff] [blame] | 492 | if (!xc.data) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | ret = -EINVAL; |
| 494 | break; |
| 495 | } |
| 496 | |
| 497 | data = kmalloc(xc.len, GFP_KERNEL); |
Al Viro | 79ea13c | 2008-01-24 02:06:46 -0800 | [diff] [blame] | 498 | if (!data) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | ret = -ENOMEM; |
| 500 | break; |
| 501 | } |
| 502 | |
| 503 | if(copy_from_user(data, xc.data, xc.len)) |
| 504 | { |
| 505 | kfree(data); |
| 506 | ret = -ENOMEM; |
| 507 | break; |
| 508 | } |
| 509 | |
| 510 | printk("%s: Starting load of data Len: %d at 0x%p == 0x%p\n", dev->name, xc.len, xc.data, data); |
| 511 | |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 512 | spin_lock_irqsave(&sc->lmc_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | lmc_gpio_mkinput(sc, 0xff); |
| 514 | |
| 515 | /* |
| 516 | * Clear the Xilinx and start prgramming from the DEC |
| 517 | */ |
| 518 | |
| 519 | /* |
| 520 | * Set ouput as: |
| 521 | * Reset: 0 (active) |
| 522 | * DP: 0 (active) |
| 523 | * Mode: 1 |
| 524 | * |
| 525 | */ |
| 526 | sc->lmc_gpio = 0x00; |
| 527 | sc->lmc_gpio &= ~LMC_GEP_DP; |
| 528 | sc->lmc_gpio &= ~LMC_GEP_RESET; |
| 529 | sc->lmc_gpio |= LMC_GEP_MODE; |
| 530 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); |
| 531 | |
| 532 | lmc_gpio_mkoutput(sc, LMC_GEP_MODE | LMC_GEP_DP | LMC_GEP_RESET); |
| 533 | |
| 534 | /* |
| 535 | * Wait at least 10 us 20 to be safe |
| 536 | */ |
| 537 | udelay(50); |
| 538 | |
| 539 | /* |
| 540 | * Clear reset and activate programming lines |
| 541 | * Reset: Input |
| 542 | * DP: Input |
| 543 | * Clock: Output |
| 544 | * Data: Output |
| 545 | * Mode: Output |
| 546 | */ |
| 547 | lmc_gpio_mkinput(sc, LMC_GEP_DP | LMC_GEP_RESET); |
| 548 | |
| 549 | /* |
| 550 | * Set LOAD, DATA, Clock to 1 |
| 551 | */ |
| 552 | sc->lmc_gpio = 0x00; |
| 553 | sc->lmc_gpio |= LMC_GEP_MODE; |
| 554 | sc->lmc_gpio |= LMC_GEP_DATA; |
| 555 | sc->lmc_gpio |= LMC_GEP_CLK; |
| 556 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); |
| 557 | |
| 558 | lmc_gpio_mkoutput(sc, LMC_GEP_DATA | LMC_GEP_CLK | LMC_GEP_MODE ); |
| 559 | |
| 560 | /* |
| 561 | * busy wait for the chip to reset |
| 562 | */ |
| 563 | while( (LMC_CSR_READ(sc, csr_gp) & LMC_GEP_INIT) == 0 && |
| 564 | (timeout-- > 0)) |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 565 | cpu_relax(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | |
| 567 | printk(KERN_DEBUG "%s: Waited %d for the Xilinx to clear it's memory\n", dev->name, 500000-timeout); |
| 568 | |
| 569 | for(pos = 0; pos < xc.len; pos++){ |
| 570 | switch(data[pos]){ |
| 571 | case 0: |
| 572 | sc->lmc_gpio &= ~LMC_GEP_DATA; /* Data is 0 */ |
| 573 | break; |
| 574 | case 1: |
| 575 | sc->lmc_gpio |= LMC_GEP_DATA; /* Data is 1 */ |
| 576 | break; |
| 577 | default: |
| 578 | printk(KERN_WARNING "%s Bad data in xilinx programming data at %d, got %d wanted 0 or 1\n", dev->name, pos, data[pos]); |
| 579 | sc->lmc_gpio |= LMC_GEP_DATA; /* Assume it's 1 */ |
| 580 | } |
| 581 | sc->lmc_gpio &= ~LMC_GEP_CLK; /* Clock to zero */ |
| 582 | sc->lmc_gpio |= LMC_GEP_MODE; |
| 583 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); |
| 584 | udelay(1); |
| 585 | |
| 586 | sc->lmc_gpio |= LMC_GEP_CLK; /* Put the clack back to one */ |
| 587 | sc->lmc_gpio |= LMC_GEP_MODE; |
| 588 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); |
| 589 | udelay(1); |
| 590 | } |
| 591 | if((LMC_CSR_READ(sc, csr_gp) & LMC_GEP_INIT) == 0){ |
| 592 | printk(KERN_WARNING "%s: Reprogramming FAILED. Needs to be reprogrammed. (corrupted data)\n", dev->name); |
| 593 | } |
| 594 | else if((LMC_CSR_READ(sc, csr_gp) & LMC_GEP_DP) == 0){ |
| 595 | printk(KERN_WARNING "%s: Reprogramming FAILED. Needs to be reprogrammed. (done)\n", dev->name); |
| 596 | } |
| 597 | else { |
| 598 | printk(KERN_DEBUG "%s: Done reprogramming Xilinx, %d bits, good luck!\n", dev->name, pos); |
| 599 | } |
| 600 | |
| 601 | lmc_gpio_mkinput(sc, 0xff); |
| 602 | |
| 603 | sc->lmc_miireg16 |= LMC_MII16_FIFO_RESET; |
| 604 | lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); |
| 605 | |
| 606 | sc->lmc_miireg16 &= ~LMC_MII16_FIFO_RESET; |
| 607 | lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); |
Alan Cox | 8ab7b66 | 2008-10-15 11:50:42 +0100 | [diff] [blame] | 608 | spin_unlock_irqrestore(&sc->lmc_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | |
| 610 | kfree(data); |
| 611 | |
| 612 | ret = 0; |
| 613 | |
| 614 | break; |
| 615 | } |
| 616 | default: /*fold02*/ |
| 617 | ret = -EBADE; |
| 618 | break; |
| 619 | } |
| 620 | |
| 621 | netif_wake_queue(dev); |
| 622 | sc->lmc_txfull = 0; |
| 623 | |
| 624 | } |
| 625 | break; |
| 626 | default: /*fold01*/ |
| 627 | /* If we don't know what to do, give the protocol a shot. */ |
| 628 | ret = lmc_proto_ioctl (sc, ifr, cmd); |
| 629 | break; |
| 630 | } |
| 631 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | lmc_trace(dev, "lmc_ioctl out"); |
| 633 | |
| 634 | return ret; |
| 635 | } |
| 636 | |
| 637 | |
| 638 | /* the watchdog process that cruises around */ |
| 639 | static void lmc_watchdog (unsigned long data) /*fold00*/ |
| 640 | { |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 641 | struct net_device *dev = (struct net_device *)data; |
| 642 | lmc_softc_t *sc = dev_to_sc(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | int link_status; |
Krzysztof Hałasa | 867240f | 2008-07-03 00:39:46 +0200 | [diff] [blame] | 644 | u32 ticks; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | unsigned long flags; |
| 646 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | lmc_trace(dev, "lmc_watchdog in"); |
| 648 | |
| 649 | spin_lock_irqsave(&sc->lmc_lock, flags); |
| 650 | |
| 651 | if(sc->check != 0xBEAFCAFE){ |
Alexey Dobriyan | 32357988 | 2006-01-15 02:12:54 +0100 | [diff] [blame] | 652 | printk("LMC: Corrupt net_device struct, breaking out\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | spin_unlock_irqrestore(&sc->lmc_lock, flags); |
| 654 | return; |
| 655 | } |
| 656 | |
| 657 | |
| 658 | /* Make sure the tx jabber and rx watchdog are off, |
| 659 | * and the transmit and receive processes are running. |
| 660 | */ |
| 661 | |
| 662 | LMC_CSR_WRITE (sc, csr_15, 0x00000011); |
| 663 | sc->lmc_cmdmode |= TULIP_CMD_TXRUN | TULIP_CMD_RXRUN; |
| 664 | LMC_CSR_WRITE (sc, csr_command, sc->lmc_cmdmode); |
| 665 | |
| 666 | if (sc->lmc_ok == 0) |
| 667 | goto kick_timer; |
| 668 | |
| 669 | LMC_EVENT_LOG(LMC_EVENT_WATCHDOG, LMC_CSR_READ (sc, csr_status), lmc_mii_readreg (sc, 0, 16)); |
| 670 | |
| 671 | /* --- begin time out check ----------------------------------- |
| 672 | * check for a transmit interrupt timeout |
| 673 | * Has the packet xmt vs xmt serviced threshold been exceeded */ |
| 674 | if (sc->lmc_taint_tx == sc->lastlmc_taint_tx && |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 675 | sc->lmc_device->stats.tx_packets > sc->lasttx_packets && |
| 676 | sc->tx_TimeoutInd == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | { |
| 678 | |
| 679 | /* wait for the watchdog to come around again */ |
| 680 | sc->tx_TimeoutInd = 1; |
| 681 | } |
| 682 | else if (sc->lmc_taint_tx == sc->lastlmc_taint_tx && |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 683 | sc->lmc_device->stats.tx_packets > sc->lasttx_packets && |
| 684 | sc->tx_TimeoutInd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | { |
| 686 | |
| 687 | LMC_EVENT_LOG(LMC_EVENT_XMTINTTMO, LMC_CSR_READ (sc, csr_status), 0); |
| 688 | |
| 689 | sc->tx_TimeoutDisplay = 1; |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 690 | sc->extra_stats.tx_TimeoutCnt++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | |
| 692 | /* DEC chip is stuck, hit it with a RESET!!!! */ |
| 693 | lmc_running_reset (dev); |
| 694 | |
| 695 | |
| 696 | /* look at receive & transmit process state to make sure they are running */ |
| 697 | LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0); |
| 698 | |
| 699 | /* look at: DSR - 02 for Reg 16 |
| 700 | * CTS - 08 |
| 701 | * DCD - 10 |
| 702 | * RI - 20 |
| 703 | * for Reg 17 |
| 704 | */ |
| 705 | LMC_EVENT_LOG(LMC_EVENT_RESET2, lmc_mii_readreg (sc, 0, 16), lmc_mii_readreg (sc, 0, 17)); |
| 706 | |
| 707 | /* reset the transmit timeout detection flag */ |
| 708 | sc->tx_TimeoutInd = 0; |
| 709 | sc->lastlmc_taint_tx = sc->lmc_taint_tx; |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 710 | sc->lasttx_packets = sc->lmc_device->stats.tx_packets; |
| 711 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | sc->tx_TimeoutInd = 0; |
| 713 | sc->lastlmc_taint_tx = sc->lmc_taint_tx; |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 714 | sc->lasttx_packets = sc->lmc_device->stats.tx_packets; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | } |
| 716 | |
| 717 | /* --- end time out check ----------------------------------- */ |
| 718 | |
| 719 | |
| 720 | link_status = sc->lmc_media->get_link_status (sc); |
| 721 | |
| 722 | /* |
| 723 | * hardware level link lost, but the interface is marked as up. |
| 724 | * Mark it as down. |
| 725 | */ |
| 726 | if ((link_status == 0) && (sc->last_link_status != 0)) { |
| 727 | printk(KERN_WARNING "%s: hardware/physical link down\n", dev->name); |
| 728 | sc->last_link_status = 0; |
| 729 | /* lmc_reset (sc); Why reset??? The link can go down ok */ |
| 730 | |
| 731 | /* Inform the world that link has been lost */ |
| 7d17c1d | 2005-05-12 19:45:25 -0400 | [diff] [blame] | 732 | netif_carrier_off(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | } |
| 734 | |
| 735 | /* |
| 736 | * hardware link is up, but the interface is marked as down. |
| 737 | * Bring it back up again. |
| 738 | */ |
| 739 | if (link_status != 0 && sc->last_link_status == 0) { |
| 740 | printk(KERN_WARNING "%s: hardware/physical link up\n", dev->name); |
| 741 | sc->last_link_status = 1; |
| 742 | /* lmc_reset (sc); Again why reset??? */ |
| 743 | |
| 7d17c1d | 2005-05-12 19:45:25 -0400 | [diff] [blame] | 744 | netif_carrier_on(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | } |
| 746 | |
| 747 | /* Call media specific watchdog functions */ |
| 748 | sc->lmc_media->watchdog(sc); |
| 749 | |
| 750 | /* |
| 751 | * Poke the transmitter to make sure it |
| 752 | * never stops, even if we run out of mem |
| 753 | */ |
| 754 | LMC_CSR_WRITE(sc, csr_rxpoll, 0); |
| 755 | |
| 756 | /* |
| 757 | * Check for code that failed |
| 758 | * and try and fix it as appropriate |
| 759 | */ |
| 760 | if(sc->failed_ring == 1){ |
| 761 | /* |
| 762 | * Failed to setup the recv/xmit rin |
| 763 | * Try again |
| 764 | */ |
| 765 | sc->failed_ring = 0; |
| 766 | lmc_softreset(sc); |
| 767 | } |
| 768 | if(sc->failed_recv_alloc == 1){ |
| 769 | /* |
| 770 | * We failed to alloc mem in the |
| 771 | * interrupt handler, go through the rings |
| 772 | * and rebuild them |
| 773 | */ |
| 774 | sc->failed_recv_alloc = 0; |
| 775 | lmc_softreset(sc); |
| 776 | } |
| 777 | |
| 778 | |
| 779 | /* |
| 780 | * remember the timer value |
| 781 | */ |
| 782 | kick_timer: |
| 783 | |
| 784 | ticks = LMC_CSR_READ (sc, csr_gp_timer); |
| 785 | LMC_CSR_WRITE (sc, csr_gp_timer, 0xffffffffUL); |
| 786 | sc->ictl.ticks = 0x0000ffff - (ticks & 0x0000ffff); |
| 787 | |
| 788 | /* |
| 789 | * restart this timer. |
| 790 | */ |
| 791 | sc->timer.expires = jiffies + (HZ); |
| 792 | add_timer (&sc->timer); |
| 793 | |
| 794 | spin_unlock_irqrestore(&sc->lmc_lock, flags); |
| 795 | |
| 796 | lmc_trace(dev, "lmc_watchdog out"); |
| 797 | |
| 798 | } |
| 799 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 800 | static int lmc_attach(struct net_device *dev, unsigned short encoding, |
| 801 | unsigned short parity) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | { |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 803 | if (encoding == ENCODING_NRZ && parity == PARITY_CRC16_PR1_CCITT) |
| 804 | return 0; |
| 805 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | } |
| 807 | |
Krzysztof Hałasa | 991990a | 2009-01-08 22:52:11 +0100 | [diff] [blame] | 808 | static const struct net_device_ops lmc_ops = { |
| 809 | .ndo_open = lmc_open, |
| 810 | .ndo_stop = lmc_close, |
| 811 | .ndo_change_mtu = hdlc_change_mtu, |
| 812 | .ndo_start_xmit = hdlc_start_xmit, |
| 813 | .ndo_do_ioctl = lmc_ioctl, |
| 814 | .ndo_tx_timeout = lmc_driver_timeout, |
| 815 | .ndo_get_stats = lmc_get_stats, |
| 816 | }; |
| 817 | |
Greg Kroah-Hartman | 1dd06ae | 2012-12-06 14:30:56 +0000 | [diff] [blame] | 818 | static int lmc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | { |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 820 | lmc_softc_t *sc; |
| 821 | struct net_device *dev; |
| 822 | u16 subdevice; |
| 823 | u16 AdapModelNum; |
| 824 | int err; |
| 825 | static int cards_found; |
| 826 | |
| 827 | /* lmc_trace(dev, "lmc_init_one in"); */ |
| 828 | |
Amitoj Kaur Chawla | 7cb43be | 2016-02-27 22:34:16 +0530 | [diff] [blame] | 829 | err = pcim_enable_device(pdev); |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 830 | if (err) { |
| 831 | printk(KERN_ERR "lmc: pci enable failed: %d\n", err); |
| 832 | return err; |
| 833 | } |
| 834 | |
| 835 | err = pci_request_regions(pdev, "lmc"); |
| 836 | if (err) { |
| 837 | printk(KERN_ERR "lmc: pci_request_region failed\n"); |
Amitoj Kaur Chawla | 7cb43be | 2016-02-27 22:34:16 +0530 | [diff] [blame] | 838 | return err; |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 839 | } |
| 840 | |
| 841 | /* |
| 842 | * Allocate our own device structure |
| 843 | */ |
Amitoj Kaur Chawla | 7cb43be | 2016-02-27 22:34:16 +0530 | [diff] [blame] | 844 | sc = devm_kzalloc(&pdev->dev, sizeof(lmc_softc_t), GFP_KERNEL); |
| 845 | if (!sc) |
| 846 | return -ENOMEM; |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 847 | |
| 848 | dev = alloc_hdlcdev(sc); |
| 849 | if (!dev) { |
| 850 | printk(KERN_ERR "lmc:alloc_netdev for device failed\n"); |
Amitoj Kaur Chawla | 7cb43be | 2016-02-27 22:34:16 +0530 | [diff] [blame] | 851 | return -ENOMEM; |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 852 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | |
| 854 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 855 | dev->type = ARPHRD_HDLC; |
| 856 | dev_to_hdlc(dev)->xmit = lmc_start_xmit; |
| 857 | dev_to_hdlc(dev)->attach = lmc_attach; |
Krzysztof Hałasa | 991990a | 2009-01-08 22:52:11 +0100 | [diff] [blame] | 858 | dev->netdev_ops = &lmc_ops; |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 859 | dev->watchdog_timeo = HZ; /* 1 second */ |
| 860 | dev->tx_queue_len = 100; |
| 861 | sc->lmc_device = dev; |
| 862 | sc->name = dev->name; |
| 863 | sc->if_type = LMC_PPP; |
| 864 | sc->check = 0xBEAFCAFE; |
| 865 | dev->base_addr = pci_resource_start(pdev, 0); |
| 866 | dev->irq = pdev->irq; |
| 867 | pci_set_drvdata(pdev, dev); |
| 868 | SET_NETDEV_DEV(dev, &pdev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 870 | /* |
| 871 | * This will get the protocol layer ready and do any 1 time init's |
| 872 | * Must have a valid sc and dev structure |
| 873 | */ |
| 874 | lmc_proto_attach(sc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 876 | /* Init the spin lock so can call it latter */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 878 | spin_lock_init(&sc->lmc_lock); |
| 879 | pci_set_master(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 881 | printk(KERN_INFO "%s: detected at %lx, irq %d\n", dev->name, |
| 882 | dev->base_addr, dev->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 884 | err = register_hdlc_device(dev); |
| 885 | if (err) { |
| 886 | printk(KERN_ERR "%s: register_netdev failed.\n", dev->name); |
| 887 | free_netdev(dev); |
Amitoj Kaur Chawla | 7cb43be | 2016-02-27 22:34:16 +0530 | [diff] [blame] | 888 | return err; |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 889 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | |
| 891 | sc->lmc_cardtype = LMC_CARDTYPE_UNKNOWN; |
| 892 | sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT; |
| 893 | |
| 894 | /* |
| 895 | * |
| 896 | * Check either the subvendor or the subdevice, some systems reverse |
| 897 | * the setting in the bois, seems to be version and arch dependent? |
| 898 | * Fix the error, exchange the two values |
| 899 | */ |
| 900 | if ((subdevice = pdev->subsystem_device) == PCI_VENDOR_ID_LMC) |
| 901 | subdevice = pdev->subsystem_vendor; |
| 902 | |
| 903 | switch (subdevice) { |
| 904 | case PCI_DEVICE_ID_LMC_HSSI: |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 905 | printk(KERN_INFO "%s: LMC HSSI\n", dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | sc->lmc_cardtype = LMC_CARDTYPE_HSSI; |
| 907 | sc->lmc_media = &lmc_hssi_media; |
| 908 | break; |
| 909 | case PCI_DEVICE_ID_LMC_DS3: |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 910 | printk(KERN_INFO "%s: LMC DS3\n", dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | sc->lmc_cardtype = LMC_CARDTYPE_DS3; |
| 912 | sc->lmc_media = &lmc_ds3_media; |
| 913 | break; |
| 914 | case PCI_DEVICE_ID_LMC_SSI: |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 915 | printk(KERN_INFO "%s: LMC SSI\n", dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | sc->lmc_cardtype = LMC_CARDTYPE_SSI; |
| 917 | sc->lmc_media = &lmc_ssi_media; |
| 918 | break; |
| 919 | case PCI_DEVICE_ID_LMC_T1: |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 920 | printk(KERN_INFO "%s: LMC T1\n", dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | sc->lmc_cardtype = LMC_CARDTYPE_T1; |
| 922 | sc->lmc_media = &lmc_t1_media; |
| 923 | break; |
| 924 | default: |
André Goddard Rosa | af901ca | 2009-11-14 13:09:05 -0200 | [diff] [blame] | 925 | printk(KERN_WARNING "%s: LMC UNKNOWN CARD!\n", dev->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | break; |
| 927 | } |
| 928 | |
| 929 | lmc_initcsrs (sc, dev->base_addr, 8); |
| 930 | |
| 931 | lmc_gpio_mkinput (sc, 0xff); |
| 932 | sc->lmc_gpio = 0; /* drive no signals yet */ |
| 933 | |
| 934 | sc->lmc_media->defaults (sc); |
| 935 | |
| 936 | sc->lmc_media->set_link_status (sc, LMC_LINK_UP); |
| 937 | |
| 938 | /* verify that the PCI Sub System ID matches the Adapter Model number |
| 939 | * from the MII register |
| 940 | */ |
| 941 | AdapModelNum = (lmc_mii_readreg (sc, 0, 3) & 0x3f0) >> 4; |
| 942 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 943 | if ((AdapModelNum != LMC_ADAP_T1 || /* detect LMC1200 */ |
| 944 | subdevice != PCI_DEVICE_ID_LMC_T1) && |
| 945 | (AdapModelNum != LMC_ADAP_SSI || /* detect LMC1000 */ |
| 946 | subdevice != PCI_DEVICE_ID_LMC_SSI) && |
| 947 | (AdapModelNum != LMC_ADAP_DS3 || /* detect LMC5245 */ |
| 948 | subdevice != PCI_DEVICE_ID_LMC_DS3) && |
| 949 | (AdapModelNum != LMC_ADAP_HSSI || /* detect LMC5200 */ |
| 950 | subdevice != PCI_DEVICE_ID_LMC_HSSI)) |
| 951 | printk(KERN_WARNING "%s: Model number (%d) miscompare for PCI" |
| 952 | " Subsystem ID = 0x%04x\n", |
| 953 | dev->name, AdapModelNum, subdevice); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | /* |
| 956 | * reset clock |
| 957 | */ |
| 958 | LMC_CSR_WRITE (sc, csr_gp_timer, 0xFFFFFFFFUL); |
| 959 | |
| 960 | sc->board_idx = cards_found++; |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 961 | sc->extra_stats.check = STATCHECK; |
| 962 | sc->extra_stats.version_size = (DRIVER_VERSION << 16) + |
| 963 | sizeof(sc->lmc_device->stats) + sizeof(sc->extra_stats); |
| 964 | sc->extra_stats.lmc_cardtype = sc->lmc_cardtype; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | |
| 966 | sc->lmc_ok = 0; |
| 967 | sc->last_link_status = 0; |
| 968 | |
| 969 | lmc_trace(dev, "lmc_init_one out"); |
| 970 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | } |
| 972 | |
| 973 | /* |
| 974 | * Called from pci when removing module. |
| 975 | */ |
Bill Pemberton | a46182e | 2012-12-03 09:24:21 -0500 | [diff] [blame] | 976 | static void lmc_remove_one(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | { |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 978 | struct net_device *dev = pci_get_drvdata(pdev); |
| 979 | |
| 980 | if (dev) { |
| 981 | printk(KERN_DEBUG "%s: removing...\n", dev->name); |
| 982 | unregister_hdlc_device(dev); |
| 983 | free_netdev(dev); |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 984 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | } |
| 986 | |
| 987 | /* After this is called, packets can be sent. |
| 988 | * Does not initialize the addresses |
| 989 | */ |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 990 | static int lmc_open(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | { |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 992 | lmc_softc_t *sc = dev_to_sc(dev); |
| 993 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | |
| 995 | lmc_trace(dev, "lmc_open in"); |
| 996 | |
| 997 | lmc_led_on(sc, LMC_DS3_LED0); |
| 998 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 999 | lmc_dec_reset(sc); |
| 1000 | lmc_reset(sc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1002 | LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ(sc, csr_status), 0); |
| 1003 | LMC_EVENT_LOG(LMC_EVENT_RESET2, lmc_mii_readreg(sc, 0, 16), |
| 1004 | lmc_mii_readreg(sc, 0, 17)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | |
| 1006 | if (sc->lmc_ok){ |
| 1007 | lmc_trace(dev, "lmc_open lmc_ok out"); |
Eric Dumazet | 807540b | 2010-09-23 05:40:09 +0000 | [diff] [blame] | 1008 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | } |
| 1010 | |
| 1011 | lmc_softreset (sc); |
| 1012 | |
| 1013 | /* Since we have to use PCI bus, this should work on x86,alpha,ppc */ |
Joe Perches | a0607fd | 2009-11-18 23:29:17 -0800 | [diff] [blame] | 1014 | if (request_irq (dev->irq, lmc_interrupt, IRQF_SHARED, dev->name, dev)){ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | printk(KERN_WARNING "%s: could not get irq: %d\n", dev->name, dev->irq); |
| 1016 | lmc_trace(dev, "lmc_open irq failed out"); |
| 1017 | return -EAGAIN; |
| 1018 | } |
| 1019 | sc->got_irq = 1; |
| 1020 | |
| 1021 | /* Assert Terminal Active */ |
| 1022 | sc->lmc_miireg16 |= LMC_MII16_LED_ALL; |
| 1023 | sc->lmc_media->set_link_status (sc, LMC_LINK_UP); |
| 1024 | |
| 1025 | /* |
| 1026 | * reset to last state. |
| 1027 | */ |
| 1028 | sc->lmc_media->set_status (sc, NULL); |
| 1029 | |
| 1030 | /* setup default bits to be used in tulip_desc_t transmit descriptor |
| 1031 | * -baz */ |
| 1032 | sc->TxDescriptControlInit = ( |
| 1033 | LMC_TDES_INTERRUPT_ON_COMPLETION |
| 1034 | | LMC_TDES_FIRST_SEGMENT |
| 1035 | | LMC_TDES_LAST_SEGMENT |
| 1036 | | LMC_TDES_SECOND_ADDR_CHAINED |
| 1037 | | LMC_TDES_DISABLE_PADDING |
| 1038 | ); |
| 1039 | |
| 1040 | if (sc->ictl.crc_length == LMC_CTL_CRC_LENGTH_16) { |
| 1041 | /* disable 32 bit CRC generated by ASIC */ |
| 1042 | sc->TxDescriptControlInit |= LMC_TDES_ADD_CRC_DISABLE; |
| 1043 | } |
| 1044 | sc->lmc_media->set_crc_length(sc, sc->ictl.crc_length); |
| 1045 | /* Acknoledge the Terminal Active and light LEDs */ |
| 1046 | |
| 1047 | /* dev->flags |= IFF_UP; */ |
| 1048 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1049 | if ((err = lmc_proto_open(sc)) != 0) |
| 1050 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | netif_start_queue(dev); |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1053 | sc->extra_stats.tx_tbusy0++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | |
| 1055 | /* |
| 1056 | * select what interrupts we want to get |
| 1057 | */ |
| 1058 | sc->lmc_intrmask = 0; |
| 1059 | /* Should be using the default interrupt mask defined in the .h file. */ |
| 1060 | sc->lmc_intrmask |= (TULIP_STS_NORMALINTR |
| 1061 | | TULIP_STS_RXINTR |
| 1062 | | TULIP_STS_TXINTR |
| 1063 | | TULIP_STS_ABNRMLINTR |
| 1064 | | TULIP_STS_SYSERROR |
| 1065 | | TULIP_STS_TXSTOPPED |
| 1066 | | TULIP_STS_TXUNDERFLOW |
| 1067 | | TULIP_STS_RXSTOPPED |
| 1068 | | TULIP_STS_RXNOBUF |
| 1069 | ); |
| 1070 | LMC_CSR_WRITE (sc, csr_intr, sc->lmc_intrmask); |
| 1071 | |
| 1072 | sc->lmc_cmdmode |= TULIP_CMD_TXRUN; |
| 1073 | sc->lmc_cmdmode |= TULIP_CMD_RXRUN; |
| 1074 | LMC_CSR_WRITE (sc, csr_command, sc->lmc_cmdmode); |
| 1075 | |
| 1076 | sc->lmc_ok = 1; /* Run watchdog */ |
| 1077 | |
| 1078 | /* |
| 1079 | * Set the if up now - pfb |
| 1080 | */ |
| 1081 | |
| 1082 | sc->last_link_status = 1; |
| 1083 | |
| 1084 | /* |
| 1085 | * Setup a timer for the watchdog on probe, and start it running. |
| 1086 | * Since lmc_ok == 0, it will be a NOP for now. |
| 1087 | */ |
| 1088 | init_timer (&sc->timer); |
| 1089 | sc->timer.expires = jiffies + HZ; |
| 1090 | sc->timer.data = (unsigned long) dev; |
Joe Perches | c061b18 | 2010-08-23 18:20:03 +0000 | [diff] [blame] | 1091 | sc->timer.function = lmc_watchdog; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | add_timer (&sc->timer); |
| 1093 | |
| 1094 | lmc_trace(dev, "lmc_open out"); |
| 1095 | |
Eric Dumazet | 807540b | 2010-09-23 05:40:09 +0000 | [diff] [blame] | 1096 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1097 | } |
| 1098 | |
| 1099 | /* Total reset to compensate for the AdTran DSU doing bad things |
| 1100 | * under heavy load |
| 1101 | */ |
| 1102 | |
| 1103 | static void lmc_running_reset (struct net_device *dev) /*fold00*/ |
| 1104 | { |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1105 | lmc_softc_t *sc = dev_to_sc(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | |
Masanari Iida | fd9071e | 2012-04-13 04:33:20 +0000 | [diff] [blame] | 1107 | lmc_trace(dev, "lmc_running_reset in"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | |
| 1109 | /* stop interrupts */ |
| 1110 | /* Clear the interrupt mask */ |
| 1111 | LMC_CSR_WRITE (sc, csr_intr, 0x00000000); |
| 1112 | |
| 1113 | lmc_dec_reset (sc); |
| 1114 | lmc_reset (sc); |
| 1115 | lmc_softreset (sc); |
| 1116 | /* sc->lmc_miireg16 |= LMC_MII16_LED_ALL; */ |
| 1117 | sc->lmc_media->set_link_status (sc, 1); |
| 1118 | sc->lmc_media->set_status (sc, NULL); |
| 1119 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | netif_wake_queue(dev); |
| 1121 | |
| 1122 | sc->lmc_txfull = 0; |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1123 | sc->extra_stats.tx_tbusy0++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | |
| 1125 | sc->lmc_intrmask = TULIP_DEFAULT_INTR_MASK; |
| 1126 | LMC_CSR_WRITE (sc, csr_intr, sc->lmc_intrmask); |
| 1127 | |
| 1128 | sc->lmc_cmdmode |= (TULIP_CMD_TXRUN | TULIP_CMD_RXRUN); |
| 1129 | LMC_CSR_WRITE (sc, csr_command, sc->lmc_cmdmode); |
| 1130 | |
| 1131 | lmc_trace(dev, "lmc_runnin_reset_out"); |
| 1132 | } |
| 1133 | |
| 1134 | |
| 1135 | /* This is what is called when you ifconfig down a device. |
| 1136 | * This disables the timer for the watchdog and keepalives, |
| 1137 | * and disables the irq for dev. |
| 1138 | */ |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1139 | static int lmc_close(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | { |
| 1141 | /* not calling release_region() as we should */ |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1142 | lmc_softc_t *sc = dev_to_sc(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | |
| 1144 | lmc_trace(dev, "lmc_close in"); |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1145 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | sc->lmc_ok = 0; |
| 1147 | sc->lmc_media->set_link_status (sc, 0); |
| 1148 | del_timer (&sc->timer); |
| 1149 | lmc_proto_close(sc); |
| 1150 | lmc_ifdown (dev); |
| 1151 | |
| 1152 | lmc_trace(dev, "lmc_close out"); |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1153 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | return 0; |
| 1155 | } |
| 1156 | |
| 1157 | /* Ends the transfer of packets */ |
| 1158 | /* When the interface goes down, this is called */ |
| 1159 | static int lmc_ifdown (struct net_device *dev) /*fold00*/ |
| 1160 | { |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1161 | lmc_softc_t *sc = dev_to_sc(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | u32 csr6; |
| 1163 | int i; |
| 1164 | |
| 1165 | lmc_trace(dev, "lmc_ifdown in"); |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1166 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | /* Don't let anything else go on right now */ |
| 1168 | // dev->start = 0; |
| 1169 | netif_stop_queue(dev); |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1170 | sc->extra_stats.tx_tbusy1++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | |
| 1172 | /* stop interrupts */ |
| 1173 | /* Clear the interrupt mask */ |
| 1174 | LMC_CSR_WRITE (sc, csr_intr, 0x00000000); |
| 1175 | |
| 1176 | /* Stop Tx and Rx on the chip */ |
| 1177 | csr6 = LMC_CSR_READ (sc, csr_command); |
| 1178 | csr6 &= ~LMC_DEC_ST; /* Turn off the Transmission bit */ |
| 1179 | csr6 &= ~LMC_DEC_SR; /* Turn off the Receive bit */ |
| 1180 | LMC_CSR_WRITE (sc, csr_command, csr6); |
| 1181 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1182 | sc->lmc_device->stats.rx_missed_errors += |
| 1183 | LMC_CSR_READ(sc, csr_missed_frames) & 0xffff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | |
| 1185 | /* release the interrupt */ |
| 1186 | if(sc->got_irq == 1){ |
| 1187 | free_irq (dev->irq, dev); |
| 1188 | sc->got_irq = 0; |
| 1189 | } |
| 1190 | |
| 1191 | /* free skbuffs in the Rx queue */ |
| 1192 | for (i = 0; i < LMC_RXDESCS; i++) |
| 1193 | { |
| 1194 | struct sk_buff *skb = sc->lmc_rxq[i]; |
| 1195 | sc->lmc_rxq[i] = NULL; |
| 1196 | sc->lmc_rxring[i].status = 0; |
| 1197 | sc->lmc_rxring[i].length = 0; |
| 1198 | sc->lmc_rxring[i].buffer1 = 0xDEADBEEF; |
| 1199 | if (skb != NULL) |
| 1200 | dev_kfree_skb(skb); |
| 1201 | sc->lmc_rxq[i] = NULL; |
| 1202 | } |
| 1203 | |
| 1204 | for (i = 0; i < LMC_TXDESCS; i++) |
| 1205 | { |
| 1206 | if (sc->lmc_txq[i] != NULL) |
| 1207 | dev_kfree_skb(sc->lmc_txq[i]); |
| 1208 | sc->lmc_txq[i] = NULL; |
| 1209 | } |
| 1210 | |
| 1211 | lmc_led_off (sc, LMC_MII16_LED_ALL); |
| 1212 | |
| 1213 | netif_wake_queue(dev); |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1214 | sc->extra_stats.tx_tbusy0++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | |
| 1216 | lmc_trace(dev, "lmc_ifdown out"); |
| 1217 | |
| 1218 | return 0; |
| 1219 | } |
| 1220 | |
| 1221 | /* Interrupt handling routine. This will take an incoming packet, or clean |
| 1222 | * up after a trasmit. |
| 1223 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1224 | static irqreturn_t lmc_interrupt (int irq, void *dev_instance) /*fold00*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | { |
| 1226 | struct net_device *dev = (struct net_device *) dev_instance; |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1227 | lmc_softc_t *sc = dev_to_sc(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1228 | u32 csr; |
| 1229 | int i; |
| 1230 | s32 stat; |
| 1231 | unsigned int badtx; |
| 1232 | u32 firstcsr; |
| 1233 | int max_work = LMC_RXDESCS; |
| 1234 | int handled = 0; |
| 1235 | |
| 1236 | lmc_trace(dev, "lmc_interrupt in"); |
| 1237 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | spin_lock(&sc->lmc_lock); |
| 1239 | |
| 1240 | /* |
| 1241 | * Read the csr to find what interrupts we have (if any) |
| 1242 | */ |
| 1243 | csr = LMC_CSR_READ (sc, csr_status); |
| 1244 | |
| 1245 | /* |
| 1246 | * Make sure this is our interrupt |
| 1247 | */ |
| 1248 | if ( ! (csr & sc->lmc_intrmask)) { |
| 1249 | goto lmc_int_fail_out; |
| 1250 | } |
| 1251 | |
| 1252 | firstcsr = csr; |
| 1253 | |
| 1254 | /* always go through this loop at least once */ |
| 1255 | while (csr & sc->lmc_intrmask) { |
| 1256 | handled = 1; |
| 1257 | |
| 1258 | /* |
| 1259 | * Clear interrupt bits, we handle all case below |
| 1260 | */ |
| 1261 | LMC_CSR_WRITE (sc, csr_status, csr); |
| 1262 | |
| 1263 | /* |
| 1264 | * One of |
| 1265 | * - Transmit process timed out CSR5<1> |
| 1266 | * - Transmit jabber timeout CSR5<3> |
| 1267 | * - Transmit underflow CSR5<5> |
| 1268 | * - Transmit Receiver buffer unavailable CSR5<7> |
| 1269 | * - Receive process stopped CSR5<8> |
| 1270 | * - Receive watchdog timeout CSR5<9> |
| 1271 | * - Early transmit interrupt CSR5<10> |
| 1272 | * |
| 1273 | * Is this really right? Should we do a running reset for jabber? |
| 1274 | * (being a WAN card and all) |
| 1275 | */ |
| 1276 | if (csr & TULIP_STS_ABNRMLINTR){ |
| 1277 | lmc_running_reset (dev); |
| 1278 | break; |
| 1279 | } |
| 1280 | |
| 1281 | if (csr & TULIP_STS_RXINTR){ |
| 1282 | lmc_trace(dev, "rx interrupt"); |
| 1283 | lmc_rx (dev); |
| 1284 | |
| 1285 | } |
| 1286 | if (csr & (TULIP_STS_TXINTR | TULIP_STS_TXNOBUF | TULIP_STS_TXSTOPPED)) { |
| 1287 | |
| 1288 | int n_compl = 0 ; |
| 1289 | /* reset the transmit timeout detection flag -baz */ |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1290 | sc->extra_stats.tx_NoCompleteCnt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1291 | |
| 1292 | badtx = sc->lmc_taint_tx; |
| 1293 | i = badtx % LMC_TXDESCS; |
| 1294 | |
| 1295 | while ((badtx < sc->lmc_next_tx)) { |
| 1296 | stat = sc->lmc_txring[i].status; |
| 1297 | |
| 1298 | LMC_EVENT_LOG (LMC_EVENT_XMTINT, stat, |
| 1299 | sc->lmc_txring[i].length); |
| 1300 | /* |
| 1301 | * If bit 31 is 1 the tulip owns it break out of the loop |
| 1302 | */ |
| 1303 | if (stat & 0x80000000) |
| 1304 | break; |
| 1305 | |
| 1306 | n_compl++ ; /* i.e., have an empty slot in ring */ |
| 1307 | /* |
| 1308 | * If we have no skbuff or have cleared it |
| 1309 | * Already continue to the next buffer |
| 1310 | */ |
| 1311 | if (sc->lmc_txq[i] == NULL) |
| 1312 | continue; |
| 1313 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1314 | /* |
| 1315 | * Check the total error summary to look for any errors |
| 1316 | */ |
| 1317 | if (stat & 0x8000) { |
| 1318 | sc->lmc_device->stats.tx_errors++; |
| 1319 | if (stat & 0x4104) |
| 1320 | sc->lmc_device->stats.tx_aborted_errors++; |
| 1321 | if (stat & 0x0C00) |
| 1322 | sc->lmc_device->stats.tx_carrier_errors++; |
| 1323 | if (stat & 0x0200) |
| 1324 | sc->lmc_device->stats.tx_window_errors++; |
| 1325 | if (stat & 0x0002) |
| 1326 | sc->lmc_device->stats.tx_fifo_errors++; |
| 1327 | } else { |
| 1328 | sc->lmc_device->stats.tx_bytes += sc->lmc_txring[i].length & 0x7ff; |
| 1329 | |
| 1330 | sc->lmc_device->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | } |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1332 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | // dev_kfree_skb(sc->lmc_txq[i]); |
| 1334 | dev_kfree_skb_irq(sc->lmc_txq[i]); |
| 1335 | sc->lmc_txq[i] = NULL; |
| 1336 | |
| 1337 | badtx++; |
| 1338 | i = badtx % LMC_TXDESCS; |
| 1339 | } |
| 1340 | |
| 1341 | if (sc->lmc_next_tx - badtx > LMC_TXDESCS) |
| 1342 | { |
| 1343 | printk ("%s: out of sync pointer\n", dev->name); |
| 1344 | badtx += LMC_TXDESCS; |
| 1345 | } |
| 1346 | LMC_EVENT_LOG(LMC_EVENT_TBUSY0, n_compl, 0); |
| 1347 | sc->lmc_txfull = 0; |
| 1348 | netif_wake_queue(dev); |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1349 | sc->extra_stats.tx_tbusy0++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | |
| 1351 | |
| 1352 | #ifdef DEBUG |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1353 | sc->extra_stats.dirtyTx = badtx; |
| 1354 | sc->extra_stats.lmc_next_tx = sc->lmc_next_tx; |
| 1355 | sc->extra_stats.lmc_txfull = sc->lmc_txfull; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | #endif |
| 1357 | sc->lmc_taint_tx = badtx; |
| 1358 | |
| 1359 | /* |
| 1360 | * Why was there a break here??? |
| 1361 | */ |
| 1362 | } /* end handle transmit interrupt */ |
| 1363 | |
| 1364 | if (csr & TULIP_STS_SYSERROR) { |
| 1365 | u32 error; |
| 1366 | printk (KERN_WARNING "%s: system bus error csr: %#8.8x\n", dev->name, csr); |
| 1367 | error = csr>>23 & 0x7; |
| 1368 | switch(error){ |
| 1369 | case 0x000: |
| 1370 | printk(KERN_WARNING "%s: Parity Fault (bad)\n", dev->name); |
| 1371 | break; |
| 1372 | case 0x001: |
| 1373 | printk(KERN_WARNING "%s: Master Abort (naughty)\n", dev->name); |
| 1374 | break; |
| 1375 | case 0x010: |
| 1376 | printk(KERN_WARNING "%s: Target Abort (not so naughty)\n", dev->name); |
| 1377 | break; |
| 1378 | default: |
| 1379 | printk(KERN_WARNING "%s: This bus error code was supposed to be reserved!\n", dev->name); |
| 1380 | } |
| 1381 | lmc_dec_reset (sc); |
| 1382 | lmc_reset (sc); |
| 1383 | LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0); |
| 1384 | LMC_EVENT_LOG(LMC_EVENT_RESET2, |
| 1385 | lmc_mii_readreg (sc, 0, 16), |
| 1386 | lmc_mii_readreg (sc, 0, 17)); |
| 1387 | |
| 1388 | } |
| 1389 | |
| 1390 | |
| 1391 | if(max_work-- <= 0) |
| 1392 | break; |
| 1393 | |
| 1394 | /* |
| 1395 | * Get current csr status to make sure |
| 1396 | * we've cleared all interrupts |
| 1397 | */ |
| 1398 | csr = LMC_CSR_READ (sc, csr_status); |
| 1399 | } /* end interrupt loop */ |
| 1400 | LMC_EVENT_LOG(LMC_EVENT_INT, firstcsr, csr); |
| 1401 | |
| 1402 | lmc_int_fail_out: |
| 1403 | |
| 1404 | spin_unlock(&sc->lmc_lock); |
| 1405 | |
| 1406 | lmc_trace(dev, "lmc_interrupt out"); |
| 1407 | return IRQ_RETVAL(handled); |
| 1408 | } |
| 1409 | |
Stephen Hemminger | d71a674 | 2009-08-31 19:50:47 +0000 | [diff] [blame] | 1410 | static netdev_tx_t lmc_start_xmit(struct sk_buff *skb, |
| 1411 | struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | { |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1413 | lmc_softc_t *sc = dev_to_sc(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1414 | u32 flag; |
| 1415 | int entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | unsigned long flags; |
| 1417 | |
| 1418 | lmc_trace(dev, "lmc_start_xmit in"); |
| 1419 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1420 | spin_lock_irqsave(&sc->lmc_lock, flags); |
| 1421 | |
| 1422 | /* normal path, tbusy known to be zero */ |
| 1423 | |
| 1424 | entry = sc->lmc_next_tx % LMC_TXDESCS; |
| 1425 | |
| 1426 | sc->lmc_txq[entry] = skb; |
| 1427 | sc->lmc_txring[entry].buffer1 = virt_to_bus (skb->data); |
| 1428 | |
| 1429 | LMC_CONSOLE_LOG("xmit", skb->data, skb->len); |
| 1430 | |
| 1431 | #ifndef GCOM |
| 1432 | /* If the queue is less than half full, don't interrupt */ |
| 1433 | if (sc->lmc_next_tx - sc->lmc_taint_tx < LMC_TXDESCS / 2) |
| 1434 | { |
| 1435 | /* Do not interrupt on completion of this packet */ |
| 1436 | flag = 0x60000000; |
| 1437 | netif_wake_queue(dev); |
| 1438 | } |
| 1439 | else if (sc->lmc_next_tx - sc->lmc_taint_tx == LMC_TXDESCS / 2) |
| 1440 | { |
| 1441 | /* This generates an interrupt on completion of this packet */ |
| 1442 | flag = 0xe0000000; |
| 1443 | netif_wake_queue(dev); |
| 1444 | } |
| 1445 | else if (sc->lmc_next_tx - sc->lmc_taint_tx < LMC_TXDESCS - 1) |
| 1446 | { |
| 1447 | /* Do not interrupt on completion of this packet */ |
| 1448 | flag = 0x60000000; |
| 1449 | netif_wake_queue(dev); |
| 1450 | } |
| 1451 | else |
| 1452 | { |
| 1453 | /* This generates an interrupt on completion of this packet */ |
| 1454 | flag = 0xe0000000; |
| 1455 | sc->lmc_txfull = 1; |
| 1456 | netif_stop_queue(dev); |
| 1457 | } |
| 1458 | #else |
| 1459 | flag = LMC_TDES_INTERRUPT_ON_COMPLETION; |
| 1460 | |
| 1461 | if (sc->lmc_next_tx - sc->lmc_taint_tx >= LMC_TXDESCS - 1) |
| 1462 | { /* ring full, go busy */ |
| 1463 | sc->lmc_txfull = 1; |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1464 | netif_stop_queue(dev); |
| 1465 | sc->extra_stats.tx_tbusy1++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | LMC_EVENT_LOG(LMC_EVENT_TBUSY1, entry, 0); |
| 1467 | } |
| 1468 | #endif |
| 1469 | |
| 1470 | |
| 1471 | if (entry == LMC_TXDESCS - 1) /* last descriptor in ring */ |
| 1472 | flag |= LMC_TDES_END_OF_RING; /* flag as such for Tulip */ |
| 1473 | |
| 1474 | /* don't pad small packets either */ |
| 1475 | flag = sc->lmc_txring[entry].length = (skb->len) | flag | |
| 1476 | sc->TxDescriptControlInit; |
| 1477 | |
| 1478 | /* set the transmit timeout flag to be checked in |
| 1479 | * the watchdog timer handler. -baz |
| 1480 | */ |
| 1481 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1482 | sc->extra_stats.tx_NoCompleteCnt++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | sc->lmc_next_tx++; |
| 1484 | |
| 1485 | /* give ownership to the chip */ |
| 1486 | LMC_EVENT_LOG(LMC_EVENT_XMT, flag, entry); |
| 1487 | sc->lmc_txring[entry].status = 0x80000000; |
| 1488 | |
| 1489 | /* send now! */ |
| 1490 | LMC_CSR_WRITE (sc, csr_txpoll, 0); |
| 1491 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1492 | spin_unlock_irqrestore(&sc->lmc_lock, flags); |
| 1493 | |
| 1494 | lmc_trace(dev, "lmc_start_xmit_out"); |
Stephen Hemminger | d71a674 | 2009-08-31 19:50:47 +0000 | [diff] [blame] | 1495 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1496 | } |
| 1497 | |
| 1498 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1499 | static int lmc_rx(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1500 | { |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1501 | lmc_softc_t *sc = dev_to_sc(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | int i; |
| 1503 | int rx_work_limit = LMC_RXDESCS; |
| 1504 | unsigned int next_rx; |
| 1505 | int rxIntLoopCnt; /* debug -baz */ |
| 1506 | int localLengthErrCnt = 0; |
| 1507 | long stat; |
| 1508 | struct sk_buff *skb, *nsb; |
| 1509 | u16 len; |
| 1510 | |
| 1511 | lmc_trace(dev, "lmc_rx in"); |
| 1512 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1513 | lmc_led_on(sc, LMC_DS3_LED3); |
| 1514 | |
| 1515 | rxIntLoopCnt = 0; /* debug -baz */ |
| 1516 | |
| 1517 | i = sc->lmc_next_rx % LMC_RXDESCS; |
| 1518 | next_rx = sc->lmc_next_rx; |
| 1519 | |
| 1520 | while (((stat = sc->lmc_rxring[i].status) & LMC_RDES_OWN_BIT) != DESC_OWNED_BY_DC21X4) |
| 1521 | { |
| 1522 | rxIntLoopCnt++; /* debug -baz */ |
| 1523 | len = ((stat & LMC_RDES_FRAME_LENGTH) >> RDES_FRAME_LENGTH_BIT_NUMBER); |
| 1524 | if ((stat & 0x0300) != 0x0300) { /* Check first segment and last segment */ |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1525 | if ((stat & 0x0000ffff) != 0x7fff) { |
| 1526 | /* Oversized frame */ |
| 1527 | sc->lmc_device->stats.rx_length_errors++; |
| 1528 | goto skip_packet; |
| 1529 | } |
| 1530 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1531 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1532 | if (stat & 0x00000008) { /* Catch a dribbling bit error */ |
| 1533 | sc->lmc_device->stats.rx_errors++; |
| 1534 | sc->lmc_device->stats.rx_frame_errors++; |
| 1535 | goto skip_packet; |
| 1536 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1537 | |
| 1538 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1539 | if (stat & 0x00000004) { /* Catch a CRC error by the Xilinx */ |
| 1540 | sc->lmc_device->stats.rx_errors++; |
| 1541 | sc->lmc_device->stats.rx_crc_errors++; |
| 1542 | goto skip_packet; |
| 1543 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1544 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1545 | if (len > LMC_PKT_BUF_SZ) { |
| 1546 | sc->lmc_device->stats.rx_length_errors++; |
| 1547 | localLengthErrCnt++; |
| 1548 | goto skip_packet; |
| 1549 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1550 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1551 | if (len < sc->lmc_crcSize + 2) { |
| 1552 | sc->lmc_device->stats.rx_length_errors++; |
| 1553 | sc->extra_stats.rx_SmallPktCnt++; |
| 1554 | localLengthErrCnt++; |
| 1555 | goto skip_packet; |
| 1556 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | |
| 1558 | if(stat & 0x00004000){ |
| 1559 | printk(KERN_WARNING "%s: Receiver descriptor error, receiver out of sync?\n", dev->name); |
| 1560 | } |
| 1561 | |
| 1562 | len -= sc->lmc_crcSize; |
| 1563 | |
| 1564 | skb = sc->lmc_rxq[i]; |
| 1565 | |
| 1566 | /* |
| 1567 | * We ran out of memory at some point |
| 1568 | * just allocate an skb buff and continue. |
| 1569 | */ |
| 1570 | |
Al Viro | 79ea13c | 2008-01-24 02:06:46 -0800 | [diff] [blame] | 1571 | if (!skb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | nsb = dev_alloc_skb (LMC_PKT_BUF_SZ + 2); |
| 1573 | if (nsb) { |
| 1574 | sc->lmc_rxq[i] = nsb; |
| 1575 | nsb->dev = dev; |
Arnaldo Carvalho de Melo | 27a884d | 2007-04-19 20:29:13 -0700 | [diff] [blame] | 1576 | sc->lmc_rxring[i].buffer1 = virt_to_bus(skb_tail_pointer(nsb)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | } |
| 1578 | sc->failed_recv_alloc = 1; |
| 1579 | goto skip_packet; |
| 1580 | } |
| 1581 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1582 | sc->lmc_device->stats.rx_packets++; |
| 1583 | sc->lmc_device->stats.rx_bytes += len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1584 | |
| 1585 | LMC_CONSOLE_LOG("recv", skb->data, len); |
| 1586 | |
| 1587 | /* |
| 1588 | * I'm not sure of the sanity of this |
| 1589 | * Packets could be arriving at a constant |
| 1590 | * 44.210mbits/sec and we're going to copy |
| 1591 | * them into a new buffer?? |
| 1592 | */ |
| 1593 | |
| 1594 | if(len > (LMC_MTU - (LMC_MTU>>2))){ /* len > LMC_MTU * 0.75 */ |
| 1595 | /* |
| 1596 | * If it's a large packet don't copy it just hand it up |
| 1597 | */ |
| 1598 | give_it_anyways: |
| 1599 | |
| 1600 | sc->lmc_rxq[i] = NULL; |
| 1601 | sc->lmc_rxring[i].buffer1 = 0x0; |
| 1602 | |
| 1603 | skb_put (skb, len); |
| 1604 | skb->protocol = lmc_proto_type(sc, skb); |
Arnaldo Carvalho de Melo | 459a98e | 2007-03-19 15:30:44 -0700 | [diff] [blame] | 1605 | skb_reset_mac_header(skb); |
Arnaldo Carvalho de Melo | c1d2bbe | 2007-04-10 20:45:18 -0700 | [diff] [blame] | 1606 | /* skb_reset_network_header(skb); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1607 | skb->dev = dev; |
| 1608 | lmc_proto_netif(sc, skb); |
| 1609 | |
| 1610 | /* |
| 1611 | * This skb will be destroyed by the upper layers, make a new one |
| 1612 | */ |
| 1613 | nsb = dev_alloc_skb (LMC_PKT_BUF_SZ + 2); |
| 1614 | if (nsb) { |
| 1615 | sc->lmc_rxq[i] = nsb; |
| 1616 | nsb->dev = dev; |
Arnaldo Carvalho de Melo | 27a884d | 2007-04-19 20:29:13 -0700 | [diff] [blame] | 1617 | sc->lmc_rxring[i].buffer1 = virt_to_bus(skb_tail_pointer(nsb)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1618 | /* Transferred to 21140 below */ |
| 1619 | } |
| 1620 | else { |
| 1621 | /* |
| 1622 | * We've run out of memory, stop trying to allocate |
| 1623 | * memory and exit the interrupt handler |
| 1624 | * |
| 1625 | * The chip may run out of receivers and stop |
| 1626 | * in which care we'll try to allocate the buffer |
| 1627 | * again. (once a second) |
| 1628 | */ |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1629 | sc->extra_stats.rx_BuffAllocErr++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1630 | LMC_EVENT_LOG(LMC_EVENT_RCVINT, stat, len); |
| 1631 | sc->failed_recv_alloc = 1; |
| 1632 | goto skip_out_of_mem; |
| 1633 | } |
| 1634 | } |
| 1635 | else { |
| 1636 | nsb = dev_alloc_skb(len); |
| 1637 | if(!nsb) { |
| 1638 | goto give_it_anyways; |
| 1639 | } |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 1640 | skb_copy_from_linear_data(skb, skb_put(nsb, len), len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1641 | |
Krzysztof Halasa | 38edb5b | 2009-08-19 23:56:20 +0000 | [diff] [blame] | 1642 | nsb->protocol = lmc_proto_type(sc, nsb); |
Arnaldo Carvalho de Melo | 459a98e | 2007-03-19 15:30:44 -0700 | [diff] [blame] | 1643 | skb_reset_mac_header(nsb); |
Arnaldo Carvalho de Melo | c1d2bbe | 2007-04-10 20:45:18 -0700 | [diff] [blame] | 1644 | /* skb_reset_network_header(nsb); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1645 | nsb->dev = dev; |
| 1646 | lmc_proto_netif(sc, nsb); |
| 1647 | } |
| 1648 | |
| 1649 | skip_packet: |
| 1650 | LMC_EVENT_LOG(LMC_EVENT_RCVINT, stat, len); |
| 1651 | sc->lmc_rxring[i].status = DESC_OWNED_BY_DC21X4; |
| 1652 | |
| 1653 | sc->lmc_next_rx++; |
| 1654 | i = sc->lmc_next_rx % LMC_RXDESCS; |
| 1655 | rx_work_limit--; |
| 1656 | if (rx_work_limit < 0) |
| 1657 | break; |
| 1658 | } |
| 1659 | |
| 1660 | /* detect condition for LMC1000 where DSU cable attaches and fills |
| 1661 | * descriptors with bogus packets |
| 1662 | * |
| 1663 | if (localLengthErrCnt > LMC_RXDESCS - 3) { |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1664 | sc->extra_stats.rx_BadPktSurgeCnt++; |
| 1665 | LMC_EVENT_LOG(LMC_EVENT_BADPKTSURGE, localLengthErrCnt, |
| 1666 | sc->extra_stats.rx_BadPktSurgeCnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | } */ |
| 1668 | |
| 1669 | /* save max count of receive descriptors serviced */ |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1670 | if (rxIntLoopCnt > sc->extra_stats.rxIntLoopCnt) |
| 1671 | sc->extra_stats.rxIntLoopCnt = rxIntLoopCnt; /* debug -baz */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | |
| 1673 | #ifdef DEBUG |
| 1674 | if (rxIntLoopCnt == 0) |
| 1675 | { |
| 1676 | for (i = 0; i < LMC_RXDESCS; i++) |
| 1677 | { |
| 1678 | if ((sc->lmc_rxring[i].status & LMC_RDES_OWN_BIT) |
| 1679 | != DESC_OWNED_BY_DC21X4) |
| 1680 | { |
| 1681 | rxIntLoopCnt++; |
| 1682 | } |
| 1683 | } |
| 1684 | LMC_EVENT_LOG(LMC_EVENT_RCVEND, rxIntLoopCnt, 0); |
| 1685 | } |
| 1686 | #endif |
| 1687 | |
| 1688 | |
| 1689 | lmc_led_off(sc, LMC_DS3_LED3); |
| 1690 | |
| 1691 | skip_out_of_mem: |
| 1692 | |
| 1693 | lmc_trace(dev, "lmc_rx out"); |
| 1694 | |
| 1695 | return 0; |
| 1696 | } |
| 1697 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1698 | static struct net_device_stats *lmc_get_stats(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1699 | { |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1700 | lmc_softc_t *sc = dev_to_sc(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | unsigned long flags; |
| 1702 | |
| 1703 | lmc_trace(dev, "lmc_get_stats in"); |
| 1704 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1705 | spin_lock_irqsave(&sc->lmc_lock, flags); |
| 1706 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1707 | sc->lmc_device->stats.rx_missed_errors += LMC_CSR_READ(sc, csr_missed_frames) & 0xffff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1708 | |
| 1709 | spin_unlock_irqrestore(&sc->lmc_lock, flags); |
| 1710 | |
| 1711 | lmc_trace(dev, "lmc_get_stats out"); |
| 1712 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1713 | return &sc->lmc_device->stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1714 | } |
| 1715 | |
| 1716 | static struct pci_driver lmc_driver = { |
| 1717 | .name = "lmc", |
| 1718 | .id_table = lmc_pci_tbl, |
| 1719 | .probe = lmc_init_one, |
Bill Pemberton | a46182e | 2012-12-03 09:24:21 -0500 | [diff] [blame] | 1720 | .remove = lmc_remove_one, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1721 | }; |
| 1722 | |
Axel Lin | eff98db | 2012-04-13 18:41:21 +0000 | [diff] [blame] | 1723 | module_pci_driver(lmc_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1724 | |
| 1725 | unsigned lmc_mii_readreg (lmc_softc_t * const sc, unsigned devaddr, unsigned regno) /*fold00*/ |
| 1726 | { |
| 1727 | int i; |
| 1728 | int command = (0xf6 << 10) | (devaddr << 5) | regno; |
| 1729 | int retval = 0; |
| 1730 | |
| 1731 | lmc_trace(sc->lmc_device, "lmc_mii_readreg in"); |
| 1732 | |
| 1733 | LMC_MII_SYNC (sc); |
| 1734 | |
| 1735 | lmc_trace(sc->lmc_device, "lmc_mii_readreg: done sync"); |
| 1736 | |
| 1737 | for (i = 15; i >= 0; i--) |
| 1738 | { |
| 1739 | int dataval = (command & (1 << i)) ? 0x20000 : 0; |
| 1740 | |
| 1741 | LMC_CSR_WRITE (sc, csr_9, dataval); |
| 1742 | lmc_delay (); |
| 1743 | /* __SLOW_DOWN_IO; */ |
| 1744 | LMC_CSR_WRITE (sc, csr_9, dataval | 0x10000); |
| 1745 | lmc_delay (); |
| 1746 | /* __SLOW_DOWN_IO; */ |
| 1747 | } |
| 1748 | |
| 1749 | lmc_trace(sc->lmc_device, "lmc_mii_readreg: done1"); |
| 1750 | |
| 1751 | for (i = 19; i > 0; i--) |
| 1752 | { |
| 1753 | LMC_CSR_WRITE (sc, csr_9, 0x40000); |
| 1754 | lmc_delay (); |
| 1755 | /* __SLOW_DOWN_IO; */ |
| 1756 | retval = (retval << 1) | ((LMC_CSR_READ (sc, csr_9) & 0x80000) ? 1 : 0); |
| 1757 | LMC_CSR_WRITE (sc, csr_9, 0x40000 | 0x10000); |
| 1758 | lmc_delay (); |
| 1759 | /* __SLOW_DOWN_IO; */ |
| 1760 | } |
| 1761 | |
| 1762 | lmc_trace(sc->lmc_device, "lmc_mii_readreg out"); |
| 1763 | |
| 1764 | return (retval >> 1) & 0xffff; |
| 1765 | } |
| 1766 | |
| 1767 | void lmc_mii_writereg (lmc_softc_t * const sc, unsigned devaddr, unsigned regno, unsigned data) /*fold00*/ |
| 1768 | { |
| 1769 | int i = 32; |
| 1770 | int command = (0x5002 << 16) | (devaddr << 23) | (regno << 18) | data; |
| 1771 | |
| 1772 | lmc_trace(sc->lmc_device, "lmc_mii_writereg in"); |
| 1773 | |
| 1774 | LMC_MII_SYNC (sc); |
| 1775 | |
| 1776 | i = 31; |
| 1777 | while (i >= 0) |
| 1778 | { |
| 1779 | int datav; |
| 1780 | |
| 1781 | if (command & (1 << i)) |
| 1782 | datav = 0x20000; |
| 1783 | else |
| 1784 | datav = 0x00000; |
| 1785 | |
| 1786 | LMC_CSR_WRITE (sc, csr_9, datav); |
| 1787 | lmc_delay (); |
| 1788 | /* __SLOW_DOWN_IO; */ |
| 1789 | LMC_CSR_WRITE (sc, csr_9, (datav | 0x10000)); |
| 1790 | lmc_delay (); |
| 1791 | /* __SLOW_DOWN_IO; */ |
| 1792 | i--; |
| 1793 | } |
| 1794 | |
| 1795 | i = 2; |
| 1796 | while (i > 0) |
| 1797 | { |
| 1798 | LMC_CSR_WRITE (sc, csr_9, 0x40000); |
| 1799 | lmc_delay (); |
| 1800 | /* __SLOW_DOWN_IO; */ |
| 1801 | LMC_CSR_WRITE (sc, csr_9, 0x50000); |
| 1802 | lmc_delay (); |
| 1803 | /* __SLOW_DOWN_IO; */ |
| 1804 | i--; |
| 1805 | } |
| 1806 | |
| 1807 | lmc_trace(sc->lmc_device, "lmc_mii_writereg out"); |
| 1808 | } |
| 1809 | |
| 1810 | static void lmc_softreset (lmc_softc_t * const sc) /*fold00*/ |
| 1811 | { |
| 1812 | int i; |
| 1813 | |
| 1814 | lmc_trace(sc->lmc_device, "lmc_softreset in"); |
| 1815 | |
| 1816 | /* Initialize the receive rings and buffers. */ |
| 1817 | sc->lmc_txfull = 0; |
| 1818 | sc->lmc_next_rx = 0; |
| 1819 | sc->lmc_next_tx = 0; |
| 1820 | sc->lmc_taint_rx = 0; |
| 1821 | sc->lmc_taint_tx = 0; |
| 1822 | |
| 1823 | /* |
| 1824 | * Setup each one of the receiver buffers |
| 1825 | * allocate an skbuff for each one, setup the descriptor table |
| 1826 | * and point each buffer at the next one |
| 1827 | */ |
| 1828 | |
| 1829 | for (i = 0; i < LMC_RXDESCS; i++) |
| 1830 | { |
| 1831 | struct sk_buff *skb; |
| 1832 | |
| 1833 | if (sc->lmc_rxq[i] == NULL) |
| 1834 | { |
| 1835 | skb = dev_alloc_skb (LMC_PKT_BUF_SZ + 2); |
| 1836 | if(skb == NULL){ |
| 1837 | printk(KERN_WARNING "%s: Failed to allocate receiver ring, will try again\n", sc->name); |
| 1838 | sc->failed_ring = 1; |
| 1839 | break; |
| 1840 | } |
| 1841 | else{ |
| 1842 | sc->lmc_rxq[i] = skb; |
| 1843 | } |
| 1844 | } |
| 1845 | else |
| 1846 | { |
| 1847 | skb = sc->lmc_rxq[i]; |
| 1848 | } |
| 1849 | |
| 1850 | skb->dev = sc->lmc_device; |
| 1851 | |
| 1852 | /* owned by 21140 */ |
| 1853 | sc->lmc_rxring[i].status = 0x80000000; |
| 1854 | |
| 1855 | /* used to be PKT_BUF_SZ now uses skb since we lose some to head room */ |
Arnaldo Carvalho de Melo | d004b8d | 2007-03-20 12:00:44 -0300 | [diff] [blame] | 1856 | sc->lmc_rxring[i].length = skb_tailroom(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1857 | |
| 1858 | /* use to be tail which is dumb since you're thinking why write |
| 1859 | * to the end of the packj,et but since there's nothing there tail == data |
| 1860 | */ |
| 1861 | sc->lmc_rxring[i].buffer1 = virt_to_bus (skb->data); |
| 1862 | |
| 1863 | /* This is fair since the structure is static and we have the next address */ |
| 1864 | sc->lmc_rxring[i].buffer2 = virt_to_bus (&sc->lmc_rxring[i + 1]); |
| 1865 | |
| 1866 | } |
| 1867 | |
| 1868 | /* |
| 1869 | * Sets end of ring |
| 1870 | */ |
roel kluin | 8dd0708 | 2009-08-10 01:29:52 +0000 | [diff] [blame] | 1871 | if (i != 0) { |
| 1872 | sc->lmc_rxring[i - 1].length |= 0x02000000; /* Set end of buffers flag */ |
| 1873 | sc->lmc_rxring[i - 1].buffer2 = virt_to_bus(&sc->lmc_rxring[0]); /* Point back to the start */ |
| 1874 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | LMC_CSR_WRITE (sc, csr_rxlist, virt_to_bus (sc->lmc_rxring)); /* write base address */ |
| 1876 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1877 | /* Initialize the transmit rings and buffers */ |
| 1878 | for (i = 0; i < LMC_TXDESCS; i++) |
| 1879 | { |
| 1880 | if (sc->lmc_txq[i] != NULL){ /* have buffer */ |
| 1881 | dev_kfree_skb(sc->lmc_txq[i]); /* free it */ |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1882 | sc->lmc_device->stats.tx_dropped++; /* We just dropped a packet */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1883 | } |
| 1884 | sc->lmc_txq[i] = NULL; |
| 1885 | sc->lmc_txring[i].status = 0x00000000; |
| 1886 | sc->lmc_txring[i].buffer2 = virt_to_bus (&sc->lmc_txring[i + 1]); |
| 1887 | } |
| 1888 | sc->lmc_txring[i - 1].buffer2 = virt_to_bus (&sc->lmc_txring[0]); |
| 1889 | LMC_CSR_WRITE (sc, csr_txlist, virt_to_bus (sc->lmc_txring)); |
| 1890 | |
| 1891 | lmc_trace(sc->lmc_device, "lmc_softreset out"); |
| 1892 | } |
| 1893 | |
Krzysztof Hałasa | 867240f | 2008-07-03 00:39:46 +0200 | [diff] [blame] | 1894 | void lmc_gpio_mkinput(lmc_softc_t * const sc, u32 bits) /*fold00*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1895 | { |
| 1896 | lmc_trace(sc->lmc_device, "lmc_gpio_mkinput in"); |
| 1897 | sc->lmc_gpio_io &= ~bits; |
| 1898 | LMC_CSR_WRITE(sc, csr_gp, TULIP_GP_PINSET | (sc->lmc_gpio_io)); |
| 1899 | lmc_trace(sc->lmc_device, "lmc_gpio_mkinput out"); |
| 1900 | } |
| 1901 | |
Krzysztof Hałasa | 867240f | 2008-07-03 00:39:46 +0200 | [diff] [blame] | 1902 | void lmc_gpio_mkoutput(lmc_softc_t * const sc, u32 bits) /*fold00*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1903 | { |
| 1904 | lmc_trace(sc->lmc_device, "lmc_gpio_mkoutput in"); |
| 1905 | sc->lmc_gpio_io |= bits; |
| 1906 | LMC_CSR_WRITE(sc, csr_gp, TULIP_GP_PINSET | (sc->lmc_gpio_io)); |
| 1907 | lmc_trace(sc->lmc_device, "lmc_gpio_mkoutput out"); |
| 1908 | } |
| 1909 | |
Krzysztof Hałasa | 867240f | 2008-07-03 00:39:46 +0200 | [diff] [blame] | 1910 | void lmc_led_on(lmc_softc_t * const sc, u32 led) /*fold00*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1911 | { |
| 1912 | lmc_trace(sc->lmc_device, "lmc_led_on in"); |
| 1913 | if((~sc->lmc_miireg16) & led){ /* Already on! */ |
| 1914 | lmc_trace(sc->lmc_device, "lmc_led_on aon out"); |
| 1915 | return; |
| 1916 | } |
| 1917 | |
| 1918 | sc->lmc_miireg16 &= ~led; |
| 1919 | lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); |
| 1920 | lmc_trace(sc->lmc_device, "lmc_led_on out"); |
| 1921 | } |
| 1922 | |
Krzysztof Hałasa | 867240f | 2008-07-03 00:39:46 +0200 | [diff] [blame] | 1923 | void lmc_led_off(lmc_softc_t * const sc, u32 led) /*fold00*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1924 | { |
| 1925 | lmc_trace(sc->lmc_device, "lmc_led_off in"); |
| 1926 | if(sc->lmc_miireg16 & led){ /* Already set don't do anything */ |
| 1927 | lmc_trace(sc->lmc_device, "lmc_led_off aoff out"); |
| 1928 | return; |
| 1929 | } |
| 1930 | |
| 1931 | sc->lmc_miireg16 |= led; |
| 1932 | lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); |
| 1933 | lmc_trace(sc->lmc_device, "lmc_led_off out"); |
| 1934 | } |
| 1935 | |
| 1936 | static void lmc_reset(lmc_softc_t * const sc) /*fold00*/ |
| 1937 | { |
| 1938 | lmc_trace(sc->lmc_device, "lmc_reset in"); |
| 1939 | sc->lmc_miireg16 |= LMC_MII16_FIFO_RESET; |
| 1940 | lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); |
| 1941 | |
| 1942 | sc->lmc_miireg16 &= ~LMC_MII16_FIFO_RESET; |
| 1943 | lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); |
| 1944 | |
| 1945 | /* |
| 1946 | * make some of the GPIO pins be outputs |
| 1947 | */ |
| 1948 | lmc_gpio_mkoutput(sc, LMC_GEP_RESET); |
| 1949 | |
| 1950 | /* |
| 1951 | * RESET low to force state reset. This also forces |
| 1952 | * the transmitter clock to be internal, but we expect to reset |
| 1953 | * that later anyway. |
| 1954 | */ |
| 1955 | sc->lmc_gpio &= ~(LMC_GEP_RESET); |
| 1956 | LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); |
| 1957 | |
| 1958 | /* |
| 1959 | * hold for more than 10 microseconds |
| 1960 | */ |
| 1961 | udelay(50); |
| 1962 | |
| 1963 | /* |
| 1964 | * stop driving Xilinx-related signals |
| 1965 | */ |
| 1966 | lmc_gpio_mkinput(sc, LMC_GEP_RESET); |
| 1967 | |
| 1968 | /* |
| 1969 | * Call media specific init routine |
| 1970 | */ |
| 1971 | sc->lmc_media->init(sc); |
| 1972 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 1973 | sc->extra_stats.resetCount++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1974 | lmc_trace(sc->lmc_device, "lmc_reset out"); |
| 1975 | } |
| 1976 | |
| 1977 | static void lmc_dec_reset(lmc_softc_t * const sc) /*fold00*/ |
| 1978 | { |
Krzysztof Hałasa | 867240f | 2008-07-03 00:39:46 +0200 | [diff] [blame] | 1979 | u32 val; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1980 | lmc_trace(sc->lmc_device, "lmc_dec_reset in"); |
| 1981 | |
| 1982 | /* |
| 1983 | * disable all interrupts |
| 1984 | */ |
| 1985 | sc->lmc_intrmask = 0; |
| 1986 | LMC_CSR_WRITE(sc, csr_intr, sc->lmc_intrmask); |
| 1987 | |
| 1988 | /* |
| 1989 | * Reset the chip with a software reset command. |
| 1990 | * Wait 10 microseconds (actually 50 PCI cycles but at |
| 1991 | * 33MHz that comes to two microseconds but wait a |
| 1992 | * bit longer anyways) |
| 1993 | */ |
| 1994 | LMC_CSR_WRITE(sc, csr_busmode, TULIP_BUSMODE_SWRESET); |
| 1995 | udelay(25); |
| 1996 | #ifdef __sparc__ |
| 1997 | sc->lmc_busmode = LMC_CSR_READ(sc, csr_busmode); |
| 1998 | sc->lmc_busmode = 0x00100000; |
| 1999 | sc->lmc_busmode &= ~TULIP_BUSMODE_SWRESET; |
| 2000 | LMC_CSR_WRITE(sc, csr_busmode, sc->lmc_busmode); |
| 2001 | #endif |
| 2002 | sc->lmc_cmdmode = LMC_CSR_READ(sc, csr_command); |
| 2003 | |
| 2004 | /* |
| 2005 | * We want: |
| 2006 | * no ethernet address in frames we write |
| 2007 | * disable padding (txdesc, padding disable) |
| 2008 | * ignore runt frames (rdes0 bit 15) |
| 2009 | * no receiver watchdog or transmitter jabber timer |
| 2010 | * (csr15 bit 0,14 == 1) |
| 2011 | * if using 16-bit CRC, turn off CRC (trans desc, crc disable) |
| 2012 | */ |
| 2013 | |
| 2014 | sc->lmc_cmdmode |= ( TULIP_CMD_PROMISCUOUS |
| 2015 | | TULIP_CMD_FULLDUPLEX |
| 2016 | | TULIP_CMD_PASSBADPKT |
| 2017 | | TULIP_CMD_NOHEARTBEAT |
| 2018 | | TULIP_CMD_PORTSELECT |
| 2019 | | TULIP_CMD_RECEIVEALL |
| 2020 | | TULIP_CMD_MUSTBEONE |
| 2021 | ); |
| 2022 | sc->lmc_cmdmode &= ~( TULIP_CMD_OPERMODE |
| 2023 | | TULIP_CMD_THRESHOLDCTL |
| 2024 | | TULIP_CMD_STOREFWD |
| 2025 | | TULIP_CMD_TXTHRSHLDCTL |
| 2026 | ); |
| 2027 | |
| 2028 | LMC_CSR_WRITE(sc, csr_command, sc->lmc_cmdmode); |
| 2029 | |
| 2030 | /* |
| 2031 | * disable receiver watchdog and transmit jabber |
| 2032 | */ |
| 2033 | val = LMC_CSR_READ(sc, csr_sia_general); |
| 2034 | val |= (TULIP_WATCHDOG_TXDISABLE | TULIP_WATCHDOG_RXDISABLE); |
| 2035 | LMC_CSR_WRITE(sc, csr_sia_general, val); |
| 2036 | |
| 2037 | lmc_trace(sc->lmc_device, "lmc_dec_reset out"); |
| 2038 | } |
| 2039 | |
| 2040 | static void lmc_initcsrs(lmc_softc_t * const sc, lmc_csrptr_t csr_base, /*fold00*/ |
| 2041 | size_t csr_size) |
| 2042 | { |
| 2043 | lmc_trace(sc->lmc_device, "lmc_initcsrs in"); |
| 2044 | sc->lmc_csrs.csr_busmode = csr_base + 0 * csr_size; |
| 2045 | sc->lmc_csrs.csr_txpoll = csr_base + 1 * csr_size; |
| 2046 | sc->lmc_csrs.csr_rxpoll = csr_base + 2 * csr_size; |
| 2047 | sc->lmc_csrs.csr_rxlist = csr_base + 3 * csr_size; |
| 2048 | sc->lmc_csrs.csr_txlist = csr_base + 4 * csr_size; |
| 2049 | sc->lmc_csrs.csr_status = csr_base + 5 * csr_size; |
| 2050 | sc->lmc_csrs.csr_command = csr_base + 6 * csr_size; |
| 2051 | sc->lmc_csrs.csr_intr = csr_base + 7 * csr_size; |
| 2052 | sc->lmc_csrs.csr_missed_frames = csr_base + 8 * csr_size; |
| 2053 | sc->lmc_csrs.csr_9 = csr_base + 9 * csr_size; |
| 2054 | sc->lmc_csrs.csr_10 = csr_base + 10 * csr_size; |
| 2055 | sc->lmc_csrs.csr_11 = csr_base + 11 * csr_size; |
| 2056 | sc->lmc_csrs.csr_12 = csr_base + 12 * csr_size; |
| 2057 | sc->lmc_csrs.csr_13 = csr_base + 13 * csr_size; |
| 2058 | sc->lmc_csrs.csr_14 = csr_base + 14 * csr_size; |
| 2059 | sc->lmc_csrs.csr_15 = csr_base + 15 * csr_size; |
| 2060 | lmc_trace(sc->lmc_device, "lmc_initcsrs out"); |
| 2061 | } |
| 2062 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 2063 | static void lmc_driver_timeout(struct net_device *dev) |
| 2064 | { |
| 2065 | lmc_softc_t *sc = dev_to_sc(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2066 | u32 csr6; |
| 2067 | unsigned long flags; |
| 2068 | |
| 2069 | lmc_trace(dev, "lmc_driver_timeout in"); |
| 2070 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2071 | spin_lock_irqsave(&sc->lmc_lock, flags); |
| 2072 | |
| 2073 | printk("%s: Xmitter busy|\n", dev->name); |
| 2074 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 2075 | sc->extra_stats.tx_tbusy_calls++; |
Eric Dumazet | 1ae5dc3 | 2010-05-10 05:01:31 -0700 | [diff] [blame] | 2076 | if (jiffies - dev_trans_start(dev) < TX_TIMEOUT) |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 2077 | goto bug_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2078 | |
| 2079 | /* |
| 2080 | * Chip seems to have locked up |
| 2081 | * Reset it |
| 2082 | * This whips out all our decriptor |
| 2083 | * table and starts from scartch |
| 2084 | */ |
| 2085 | |
| 2086 | LMC_EVENT_LOG(LMC_EVENT_XMTPRCTMO, |
| 2087 | LMC_CSR_READ (sc, csr_status), |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 2088 | sc->extra_stats.tx_ProcTimeout); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2089 | |
| 2090 | lmc_running_reset (dev); |
| 2091 | |
| 2092 | LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0); |
| 2093 | LMC_EVENT_LOG(LMC_EVENT_RESET2, |
| 2094 | lmc_mii_readreg (sc, 0, 16), |
| 2095 | lmc_mii_readreg (sc, 0, 17)); |
| 2096 | |
| 2097 | /* restart the tx processes */ |
| 2098 | csr6 = LMC_CSR_READ (sc, csr_command); |
| 2099 | LMC_CSR_WRITE (sc, csr_command, csr6 | 0x0002); |
| 2100 | LMC_CSR_WRITE (sc, csr_command, csr6 | 0x2002); |
| 2101 | |
| 2102 | /* immediate transmit */ |
| 2103 | LMC_CSR_WRITE (sc, csr_txpoll, 0); |
| 2104 | |
Krzysztof Hałasa | 64bef76 | 2008-07-02 20:46:21 +0200 | [diff] [blame] | 2105 | sc->lmc_device->stats.tx_errors++; |
| 2106 | sc->extra_stats.tx_ProcTimeout++; /* -baz */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2107 | |
Florian Westphal | 860e953 | 2016-05-03 16:33:13 +0200 | [diff] [blame] | 2108 | netif_trans_update(dev); /* prevent tx timeout */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2109 | |
| 2110 | bug_out: |
| 2111 | |
| 2112 | spin_unlock_irqrestore(&sc->lmc_lock, flags); |
| 2113 | |
Masanari Iida | 8faaaea | 2014-01-07 21:58:06 +0900 | [diff] [blame] | 2114 | lmc_trace(dev, "lmc_driver_timeout out"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2115 | |
| 2116 | |
| 2117 | } |