drivers/staging/sxg/sxg_ethtool.c

   1 /**************************************************************************
   2  *
   3  * Copyright (C) 2000-2008 Alacritech, Inc.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above
  12  *    copyright notice, this list of conditions and the following
  13  *    disclaimer in the documentation and/or other materials provided
  14  *    with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY ALACRITECH, INC. ``AS IS'' AND ANY
  17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ALACRITECH, INC. OR
  20  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  23  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  25  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  26  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * The views and conclusions contained in the software and documentation
  30  * are those of the authors and should not be interpreted as representing
  31  * official policies, either expressed or implied, of Alacritech, Inc.
  32  *
  33  **************************************************************************/
  34
  35 /*
  36  * FILENAME: sxg_ethtool.c
  37  *
  38  * The ethtool support for SXG driver for Alacritech's 10Gbe products.
  39  *
  40  * NOTE: This is the standard, non-accelerated version of Alacritech's
  41  *       IS-NIC driver.
  42  */
  43 #include <linux/kernel.h>
  44 #include <linux/errno.h>
  45 #include <linux/module.h>
  46 #include <linux/netdevice.h>
  47 #include <linux/etherdevice.h>
  48 #include <linux/ethtool.h>
  49 #include <linux/skbuff.h>
  50 #include <linux/pci.h>
  51
  52 #include "sxg_os.h"
  53 #include "sxghw.h"
  54 #include "sxghif.h"
  55 #include "sxg.h"
  56
  57 struct sxg_nic_stats {
  58         char stat_string[ETH_GSTRING_LEN];
  59         int sizeof_stat;
  60         int stat_offset;
  61 };
  62
  63 #define SXG_NIC_STATS(m) sizeof(((struct adapter_t *)0)->m), \
  64                                 offsetof(struct adapter_t, m)
  65
  66 #define USER_VIEWABLE_EEPROM_SIZE       28
  67
  68 static struct sxg_nic_stats sxg_nic_gstrings_stats[] = {
  69         {"xmit_ring_0_full", SXG_NIC_STATS(Stats.XmtZeroFull)},
  70
  71         /* May be will need in future */
  72 /*      {"dumb_xmit_broadcast_packets", SXG_NIC_STATS(Stats.DumbXmtBcastPkts)},
  73         {"dumb_xmit_broadcast_bytes", SXG_NIC_STATS(Stats.DumbXmtBcastBytes)},
  74         {"dumb_xmit_unicast_packets", SXG_NIC_STATS(Stats.DumbXmtUcastPkts)},
  75         {"dumb_xmit_unicast_bytes", SXG_NIC_STATS(Stats.DumbXmtUcastBytes)},
  76 */
  77         {"xmit_queue_length", SXG_NIC_STATS(Stats.XmtQLen)},
  78         {"memory_allocation_failure", SXG_NIC_STATS(Stats.NoMem)},
  79         {"Interrupts", SXG_NIC_STATS(Stats.NumInts)},
  80         {"false_interrupts", SXG_NIC_STATS(Stats.FalseInts)},
  81         {"processed_data_queue_full", SXG_NIC_STATS(Stats.PdqFull)},
  82         {"event_ring_full", SXG_NIC_STATS(Stats.EventRingFull)},
  83         {"transport_checksum_error", SXG_NIC_STATS(Stats.TransportCsum)},
  84         {"transport_underflow_error", SXG_NIC_STATS(Stats.TransportUflow)},
  85         {"transport_header_length_error", SXG_NIC_STATS(Stats.TransportHdrLen)},
  86         {"network_checksum_error", SXG_NIC_STATS(Stats.NetworkCsum)},
  87         {"network_underflow_error", SXG_NIC_STATS(Stats.NetworkUflow)},
  88         {"network_header_length_error", SXG_NIC_STATS(Stats.NetworkHdrLen)},
  89         {"receive_parity_error", SXG_NIC_STATS(Stats.Parity)},
  90         {"link_parity_error", SXG_NIC_STATS(Stats.LinkParity)},
  91         {"link/data early_error", SXG_NIC_STATS(Stats.LinkEarly)},
  92         {"buffer_overflow_error", SXG_NIC_STATS(Stats.LinkBufOflow)},
  93         {"link_code_error", SXG_NIC_STATS(Stats.LinkCode)},
  94         {"dribble nibble", SXG_NIC_STATS(Stats.LinkDribble)},
  95         {"CRC_error", SXG_NIC_STATS(Stats.LinkCrc)},
  96         {"link_overflow_error", SXG_NIC_STATS(Stats.LinkOflow)},
  97         {"link_underflow_error", SXG_NIC_STATS(Stats.LinkUflow)},
  98
  99         /* May be need in future */
 100 /*      {"dumb_rcv_broadcast_packets", SXG_NIC_STATS(Stats.DumbRcvBcastPkts)},
 101         {"dumb_rcv_broadcast_bytes", SXG_NIC_STATS(Stats.DumbRcvBcastBytes)},
 102 */      {"dumb_rcv_multicast_packets", SXG_NIC_STATS(Stats.DumbRcvMcastPkts)},
 103         {"dumb_rcv_multicast_bytes", SXG_NIC_STATS(Stats.DumbRcvMcastBytes)},
 104 /*      {"dumb_rcv_unicast_packets", SXG_NIC_STATS(Stats.DumbRcvUcastPkts)},
 105         {"dumb_rcv_unicast_bytes", SXG_NIC_STATS(Stats.DumbRcvUcastBytes)},
 106 */
 107         {"no_sgl_buffer", SXG_NIC_STATS(Stats.NoSglBuf)},
 108 };
 109
 110 #define SXG_NIC_STATS_LEN       ARRAY_SIZE(sxg_nic_gstrings_stats)
 111
 112 static inline void sxg_reg32_write(void __iomem *reg, u32 value, bool flush)
 113 {
 114         writel(value, reg);
 115         if (flush)
 116                 mb();
 117 }
 118
 119 static inline void sxg_reg64_write(struct adapter_t *adapter, void __iomem *reg,
 120                                    u64 value, u32 cpu)
 121 {
 122         u32 value_high = (u32) (value >> 32);
 123         u32 value_low = (u32) (value & 0x00000000FFFFFFFF);
 124         unsigned long flags;
 125
 126         spin_lock_irqsave(&adapter->Bit64RegLock, flags);
 127         writel(value_high, (void __iomem *)(&adapter->UcodeRegs[cpu].Upper));
 128         writel(value_low, reg);
 129         spin_unlock_irqrestore(&adapter->Bit64RegLock, flags);
 130 }
 131
 132 static void
 133 sxg_nic_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo)
 134 {
 135         struct adapter_t *adapter = netdev_priv(dev);
 136         strncpy(drvinfo->driver, sxg_driver_name, 32);
 137         strncpy(drvinfo->version, SXG_DRV_VERSION, 32);
 138 //      strncpy(drvinfo->fw_version, SAHARA_UCODE_VERS_STRING, 32);
 139         strncpy(drvinfo->bus_info, pci_name(adapter->pcidev), 32);
 140         /* TODO : Read the major and minor number of firmware. Is this
 141          * from the FLASH/EEPROM or download file ?
 142          */
 143         /* LINSYS : Check if this is correct or if not find the right value
 144          * Also check what is the right EEPROM length : EEPROM_SIZE_XFMR or EEPROM_SIZE_NO_XFMR
 145          */
 146 }
 147
 148 static int sxg_nic_set_settings(struct net_device *netdev,
 149                               struct ethtool_cmd *ecmd)
 150 {
 151         /* No settings are applicable as we support only 10Gb/FIBRE_media */
 152         return -EOPNOTSUPP;
 153 }
 154
 155 static void
 156 sxg_nic_get_strings(struct net_device *netdev, u32 stringset, u8 * data)
 157 {
 158         int index;
 159
 160         switch(stringset) {
 161         case ETH_SS_TEST:
 162                 break;
 163         case ETH_SS_STATS:
 164                 for (index = 0; index < SXG_NIC_STATS_LEN; index++) {
 165                         memcpy(data + index * ETH_GSTRING_LEN,
 166                                 sxg_nic_gstrings_stats[index].stat_string,
 167                                 ETH_GSTRING_LEN);
 168                 }
 169                 break;
 170         }
 171 }
 172
 173 static void
 174 sxg_nic_get_ethtool_stats(struct net_device *netdev,
 175                         struct ethtool_stats *stats, u64 * data)
 176 {
 177         struct adapter_t *adapter = netdev_priv(netdev);
 178         int index;
 179         for (index = 0; index < SXG_NIC_STATS_LEN; index++) {
 180                 char *p = (char *)adapter +
 181                                 sxg_nic_gstrings_stats[index].stat_offset;
 182                 data[index] = (sxg_nic_gstrings_stats[index].sizeof_stat ==
 183                                      sizeof(u64)) ? *(u64 *) p : *(u32 *) p;
 184         }
 185 }
 186
 187 static int sxg_nic_get_sset_count(struct net_device *netdev, int sset)
 188 {
 189         switch (sset) {
 190         case ETH_SS_STATS:
 191                 return SXG_NIC_STATS_LEN;
 192         default:
 193                 return -EOPNOTSUPP;
 194         }
 195 }
 196
 197 static int sxg_nic_get_settings(struct net_device *netdev,
 198                                 struct ethtool_cmd *ecmd)
 199 {
 200         struct adapter_t *adapter = netdev_priv(netdev);
 201
 202         ecmd->supported = SUPPORTED_10000baseT_Full;
 203         ecmd->autoneg = AUTONEG_ENABLE;         //VSS check This
 204         ecmd->transceiver = XCVR_EXTERNAL;      //VSS check This
 205
 206         /* For Fibre Channel */
 207         ecmd->supported |= SUPPORTED_FIBRE;
 208         ecmd->advertising = (ADVERTISED_10000baseT_Full |
 209                                 ADVERTISED_FIBRE);
 210         ecmd->port = PORT_FIBRE;
 211
 212
 213         /* Link Speed */
 214         if(adapter->LinkState & SXG_LINK_UP) {
 215                 ecmd->speed = SPEED_10000;      //adapter->LinkSpeed;
 216                 ecmd->duplex = DUPLEX_FULL;
 217         }
 218         return 0;
 219 }
 220
 221 static u32 sxg_nic_get_rx_csum(struct net_device *netdev)
 222 {
 223         struct adapter_t *adapter = netdev_priv(netdev);
 224         return ((adapter->flags & SXG_RCV_IP_CSUM_ENABLED) &&
 225                  (adapter->flags & SXG_RCV_TCP_CSUM_ENABLED));
 226 }
 227
 228 static int sxg_nic_set_rx_csum(struct net_device *netdev, u32 data)
 229 {
 230         struct adapter_t *adapter = netdev_priv(netdev);
 231         if (data)
 232                 adapter->flags |= SXG_RCV_IP_CSUM_ENABLED;
 233         else
 234                 adapter->flags &= ~SXG_RCV_IP_CSUM_ENABLED;
 235         /*
 236          * We dont need to write to the card to do checksums.
 237          * It does it anyways.
 238          */
 239         return 0;
 240 }
 241
 242 static int sxg_nic_get_regs_len(struct net_device *dev)
 243 {
 244         return (SXG_HWREG_MEMSIZE + SXG_UCODEREG_MEMSIZE);
 245 }
 246
 247 static void sxg_nic_get_regs(struct net_device *netdev,
 248                         struct ethtool_regs *regs, void *p)
 249 {
 250         struct adapter_t *adapter = netdev_priv(netdev);
 251         struct sxg_hw_regs *HwRegs = adapter->HwRegs;
 252         struct sxg_ucode_regs *UcodeRegs = adapter->UcodeRegs;
 253         u32 *buff = p;
 254
 255         memset(p, 0, (sizeof(struct sxg_hw_regs)+sizeof(struct sxg_ucode_regs)));
 256         memcpy(buff, HwRegs, sizeof(struct sxg_hw_regs));
 257         memcpy((buff+sizeof(struct sxg_hw_regs)), UcodeRegs, sizeof(struct sxg_ucode_regs));
 258 }
 259
 260 static int sxg_nic_get_eeprom_len(struct net_device *netdev)
 261 {
 262         return (USER_VIEWABLE_EEPROM_SIZE);
 263 }
 264
 265 static int sxg_nic_get_eeprom(struct net_device *netdev,
 266                                 struct ethtool_eeprom *eeprom, u8 *bytes)
 267 {
 268         struct adapter_t *adapter = netdev_priv(netdev);
 269         struct sw_cfg_data *data;
 270         unsigned long           i, status;
 271         dma_addr_t p_addr;
 272
 273         data = pci_alloc_consistent(adapter->pcidev, sizeof(struct sw_cfg_data),
 274                                          &p_addr);
 275         if(!data) {
 276                 /*
 277                  * We cant get even this much memory. Raise a hell
 278                  * Get out of here
 279                  */
 280                 printk(KERN_ERR"%s : Could not allocate memory for reading \
 281                                 EEPROM\n", __func__);
 282                 return -ENOMEM;
 283         }
 284
 285         WRITE_REG(adapter->UcodeRegs[0].ConfigStat, SXG_CFG_TIMEOUT, TRUE);
 286         WRITE_REG64(adapter, adapter->UcodeRegs[0].Config, p_addr, 0);
 287         for(i=0; i<1000; i++) {
 288                 READ_REG(adapter->UcodeRegs[0].ConfigStat, status);
 289                 if (status != SXG_CFG_TIMEOUT)
 290                         break;
 291                 mdelay(1);      /* Do we really need this */
 292         }
 293
 294         memset(bytes, 0, eeprom->len);
 295         memcpy(bytes, data->MacAddr[0].MacAddr, sizeof(struct sxg_config_mac));
 296         memcpy(bytes+6, data->AtkFru.PartNum, 6);
 297         memcpy(bytes+12, data->AtkFru.Revision, 2);
 298         memcpy(bytes+14, data->AtkFru.Serial, 14);
 299
 300         return 0;
 301 }
 302
 303 const struct ethtool_ops sxg_nic_ethtool_ops = {
 304         .get_settings = sxg_nic_get_settings,
 305         .set_settings = sxg_nic_set_settings,
 306         .get_drvinfo = sxg_nic_get_drvinfo,
 307         .get_regs_len = sxg_nic_get_regs_len,
 308         .get_regs = sxg_nic_get_regs,
 309         .get_link = ethtool_op_get_link,
 310 //      .get_wol = sxg_nic_get_wol,
 311         .get_eeprom_len = sxg_nic_get_eeprom_len,
 312         .get_eeprom = sxg_nic_get_eeprom,
 313 //      .get_pauseparam = sxg_nic_get_pauseparam,
 314 //      .set_pauseparam = sxg_nic_set_pauseparam,
 315         .set_tx_csum = ethtool_op_set_tx_csum,
 316         .get_sg = ethtool_op_get_sg,
 317         .set_sg = ethtool_op_set_sg,
 318 //      .get_tso = sxg_nic_get_tso,
 319 //      .set_tso = sxg_nic_set_tso,
 320 //      .self_test = sxg_nic_diag_test,
 321         .get_strings = sxg_nic_get_strings,
 322         .get_ethtool_stats = sxg_nic_get_ethtool_stats,
 323         .get_sset_count = sxg_nic_get_sset_count,
 324         .get_rx_csum = sxg_nic_get_rx_csum,
 325         .set_rx_csum = sxg_nic_set_rx_csum,
 326 //      .get_coalesce = sxg_nic_get_intr_coalesce,
 327 //      .set_coalesce = sxg_nic_set_intr_coalesce,
 328 };