drivers/s390/net/lcs.h

   1 /*lcs.h*/
   2
   3 #include <linux/interrupt.h>
   4 #include <linux/netdevice.h>
   5 #include <linux/skbuff.h>
   6 #include <linux/workqueue.h>
   7 #include <asm/ccwdev.h>
   8
   9 #define LCS_DBF_TEXT(level, name, text) \
  10         do { \
  11                 debug_text_event(lcs_dbf_##name, level, text); \
  12         } while (0)
  13
  14 #define LCS_DBF_HEX(level,name,addr,len) \
  15 do { \
  16         debug_event(lcs_dbf_##name,level,(void*)(addr),len); \
  17 } while (0)
  18
  19 #define LCS_DBF_TEXT_(level,name,text...) \
  20         do { \
  21                 if (debug_level_enabled(lcs_dbf_##name, level)) { \
  22                         sprintf(debug_buffer, text); \
  23                         debug_text_event(lcs_dbf_##name, level, debug_buffer); \
  24                 } \
  25         } while (0)
  26
  27 /**
  28  *      sysfs related stuff
  29  */
  30 #define CARD_FROM_DEV(cdev) \
  31         (struct lcs_card *) dev_get_drvdata( \
  32                 &((struct ccwgroup_device *)dev_get_drvdata(&cdev->dev))->dev);
  33
  34 /**
  35  * Enum for classifying detected devices.
  36  */
  37 enum lcs_channel_types {
  38         /* Device is not a channel  */
  39         lcs_channel_type_none,
  40
  41         /* Device is a 2216 channel */
  42         lcs_channel_type_parallel,
  43
  44         /* Device is a 2216 channel */
  45         lcs_channel_type_2216,
  46
  47         /* Device is a OSA2 card */
  48         lcs_channel_type_osa2
  49 };
  50
  51 /**
  52  * CCW commands used in this driver
  53  */
  54 #define LCS_CCW_WRITE           0x01
  55 #define LCS_CCW_READ            0x02
  56 #define LCS_CCW_TRANSFER        0x08
  57
  58 /**
  59  * LCS device status primitives
  60  */
  61 #define LCS_CMD_STARTLAN        0x01
  62 #define LCS_CMD_STOPLAN         0x02
  63 #define LCS_CMD_LANSTAT         0x04
  64 #define LCS_CMD_STARTUP         0x07
  65 #define LCS_CMD_SHUTDOWN        0x08
  66 #define LCS_CMD_QIPASSIST       0xb2
  67 #define LCS_CMD_SETIPM          0xb4
  68 #define LCS_CMD_DELIPM          0xb5
  69
  70 #define LCS_INITIATOR_TCPIP     0x00
  71 #define LCS_INITIATOR_LGW       0x01
  72 #define LCS_STD_CMD_SIZE        16
  73 #define LCS_MULTICAST_CMD_SIZE  404
  74
  75 /**
  76  * LCS IPASSIST MASKS,only used when multicast is switched on
  77  */
  78 /* Not supported by LCS */
  79 #define LCS_IPASS_ARP_PROCESSING        0x0001
  80 #define LCS_IPASS_IN_CHECKSUM_SUPPORT   0x0002
  81 #define LCS_IPASS_OUT_CHECKSUM_SUPPORT  0x0004
  82 #define LCS_IPASS_IP_FRAG_REASSEMBLY    0x0008
  83 #define LCS_IPASS_IP_FILTERING          0x0010
  84 /* Supported by lcs 3172 */
  85 #define LCS_IPASS_IPV6_SUPPORT          0x0020
  86 #define LCS_IPASS_MULTICAST_SUPPORT     0x0040
  87
  88 /**
  89  * LCS sense byte definitions
  90  */
  91 #define LCS_SENSE_BYTE_0                0
  92 #define LCS_SENSE_BYTE_1                1
  93 #define LCS_SENSE_BYTE_2                2
  94 #define LCS_SENSE_BYTE_3                3
  95 #define LCS_SENSE_INTERFACE_DISCONNECT  0x01
  96 #define LCS_SENSE_EQUIPMENT_CHECK       0x10
  97 #define LCS_SENSE_BUS_OUT_CHECK         0x20
  98 #define LCS_SENSE_INTERVENTION_REQUIRED 0x40
  99 #define LCS_SENSE_CMD_REJECT            0x80
 100 #define LCS_SENSE_RESETTING_EVENT       0x80
 101 #define LCS_SENSE_DEVICE_ONLINE         0x20
 102
 103 /**
 104  * LCS packet type definitions
 105  */
 106 #define LCS_FRAME_TYPE_CONTROL          0
 107 #define LCS_FRAME_TYPE_ENET             1
 108 #define LCS_FRAME_TYPE_TR               2
 109 #define LCS_FRAME_TYPE_FDDI             7
 110 #define LCS_FRAME_TYPE_AUTO             -1
 111
 112 /**
 113  * some more definitions,we will sort them later
 114  */
 115 #define LCS_ILLEGAL_OFFSET              0xffff
 116 #define LCS_IOBUFFERSIZE                0x5000
 117 #define LCS_NUM_BUFFS                   32      /* needs to be power of 2 */
 118 #define LCS_MAC_LENGTH                  6
 119 #define LCS_INVALID_PORT_NO             -1
 120 #define LCS_LANCMD_TIMEOUT_DEFAULT      5
 121
 122 /**
 123  * Multicast state
 124  */
 125 #define  LCS_IPM_STATE_SET_REQUIRED     0
 126 #define  LCS_IPM_STATE_DEL_REQUIRED     1
 127 #define  LCS_IPM_STATE_ON_CARD          2
 128
 129 /**
 130  * LCS IP Assist declarations
 131  * seems to be only used for multicast
 132  */
 133 #define  LCS_IPASS_ARP_PROCESSING       0x0001
 134 #define  LCS_IPASS_INBOUND_CSUM_SUPP    0x0002
 135 #define  LCS_IPASS_OUTBOUND_CSUM_SUPP   0x0004
 136 #define  LCS_IPASS_IP_FRAG_REASSEMBLY   0x0008
 137 #define  LCS_IPASS_IP_FILTERING         0x0010
 138 #define  LCS_IPASS_IPV6_SUPPORT         0x0020
 139 #define  LCS_IPASS_MULTICAST_SUPPORT    0x0040
 140
 141 /**
 142  * LCS Buffer states
 143  */
 144 enum lcs_buffer_states {
 145         LCS_BUF_STATE_EMPTY,    /* buffer is empty */
 146         LCS_BUF_STATE_LOCKED,   /* buffer is locked, don't touch */
 147         LCS_BUF_STATE_READY,    /* buffer is ready for read/write */
 148         LCS_BUF_STATE_PROCESSED,
 149 };
 150
 151 /**
 152  * LCS Channel State Machine declarations
 153  */
 154 enum lcs_channel_states {
 155         LCS_CH_STATE_INIT,
 156         LCS_CH_STATE_HALTED,
 157         LCS_CH_STATE_STOPPED,
 158         LCS_CH_STATE_RUNNING,
 159         LCS_CH_STATE_SUSPENDED,
 160         LCS_CH_STATE_CLEARED,
 161         LCS_CH_STATE_ERROR,
 162 };
 163
 164 /**
 165  * LCS device state machine
 166  */
 167 enum lcs_dev_states {
 168         DEV_STATE_DOWN,
 169         DEV_STATE_UP,
 170         DEV_STATE_RECOVER,
 171 };
 172
 173 enum lcs_threads {
 174         LCS_SET_MC_THREAD       = 1,
 175         LCS_RECOVERY_THREAD     = 2,
 176 };
 177
 178 /**
 179  * LCS struct declarations
 180  */
 181 struct lcs_header {
 182         __u16  offset;
 183         __u8   type;
 184         __u8   slot;
 185 }  __attribute__ ((packed));
 186
 187 struct lcs_ip_mac_pair {
 188         __be32  ip_addr;
 189         __u8   mac_addr[LCS_MAC_LENGTH];
 190         __u8   reserved[2];
 191 }  __attribute__ ((packed));
 192
 193 struct lcs_ipm_list {
 194         struct list_head list;
 195         struct lcs_ip_mac_pair ipm;
 196         __u8 ipm_state;
 197 };
 198
 199 struct lcs_cmd {
 200         __u16  offset;
 201         __u8   type;
 202         __u8   slot;
 203         __u8   cmd_code;
 204         __u8   initiator;
 205         __u16  sequence_no;
 206         __u16  return_code;
 207         union {
 208                 struct {
 209                         __u8   lan_type;
 210                         __u8   portno;
 211                         __u16  parameter_count;
 212                         __u8   operator_flags[3];
 213                         __u8   reserved[3];
 214                 } lcs_std_cmd;
 215                 struct {
 216                         __u16  unused1;
 217                         __u16  buff_size;
 218                         __u8   unused2[6];
 219                 } lcs_startup;
 220                 struct {
 221                         __u8   lan_type;
 222                         __u8   portno;
 223                         __u8   unused[10];
 224                         __u8   mac_addr[LCS_MAC_LENGTH];
 225                         __u32  num_packets_deblocked;
 226                         __u32  num_packets_blocked;
 227                         __u32  num_packets_tx_on_lan;
 228                         __u32  num_tx_errors_detected;
 229                         __u32  num_tx_packets_disgarded;
 230                         __u32  num_packets_rx_from_lan;
 231                         __u32  num_rx_errors_detected;
 232                         __u32  num_rx_discarded_nobuffs_avail;
 233                         __u32  num_rx_packets_too_large;
 234                 } lcs_lanstat_cmd;
 235 #ifdef CONFIG_IP_MULTICAST
 236                 struct {
 237                         __u8   lan_type;
 238                         __u8   portno;
 239                         __u16  num_ip_pairs;
 240                         __u16  ip_assists_supported;
 241                         __u16  ip_assists_enabled;
 242                         __u16  version;
 243                         struct {
 244                                 struct lcs_ip_mac_pair
 245                                 ip_mac_pair[32];
 246                                 __u32     response_data;
 247                         } lcs_ipass_ctlmsg __attribute ((packed));
 248                 } lcs_qipassist __attribute__ ((packed));
 249 #endif /*CONFIG_IP_MULTICAST */
 250         } cmd __attribute__ ((packed));
 251 }  __attribute__ ((packed));
 252
 253 /**
 254  * Forward declarations.
 255  */
 256 struct lcs_card;
 257 struct lcs_channel;
 258
 259 /**
 260  * Definition of an lcs buffer.
 261  */
 262 struct lcs_buffer {
 263         enum lcs_buffer_states state;
 264         void *data;
 265         int count;
 266         /* Callback for completion notification. */
 267         void (*callback)(struct lcs_channel *, struct lcs_buffer *);
 268 };
 269
 270 struct lcs_reply {
 271         struct list_head list;
 272         __u16 sequence_no;
 273         atomic_t refcnt;
 274         /* Callback for completion notification. */
 275         void (*callback)(struct lcs_card *, struct lcs_cmd *);
 276         wait_queue_head_t wait_q;
 277         struct lcs_card *card;
 278         int received;
 279         int rc;
 280 };
 281
 282 /**
 283  * Definition of an lcs channel
 284  */
 285 struct lcs_channel {
 286         enum lcs_channel_states state;
 287         struct ccw_device *ccwdev;
 288         struct ccw1 ccws[LCS_NUM_BUFFS + 1];
 289         wait_queue_head_t wait_q;
 290         struct tasklet_struct irq_tasklet;
 291         struct lcs_buffer iob[LCS_NUM_BUFFS];
 292         int io_idx;
 293         int buf_idx;
 294 };
 295
 296
 297 /**
 298  * definition of the lcs card
 299  */
 300 struct lcs_card {
 301         spinlock_t lock;
 302         spinlock_t ipm_lock;
 303         enum lcs_dev_states state;
 304         struct net_device *dev;
 305         struct net_device_stats stats;
 306         __be16 (*lan_type_trans)(struct sk_buff *skb,
 307                                          struct net_device *dev);
 308         struct ccwgroup_device *gdev;
 309         struct lcs_channel read;
 310         struct lcs_channel write;
 311         struct lcs_buffer *tx_buffer;
 312         int tx_emitted;
 313         struct list_head lancmd_waiters;
 314         int lancmd_timeout;
 315
 316         struct work_struct kernel_thread_starter;
 317         spinlock_t mask_lock;
 318         unsigned long thread_start_mask;
 319         unsigned long thread_running_mask;
 320         unsigned long thread_allowed_mask;
 321         wait_queue_head_t wait_q;
 322
 323 #ifdef CONFIG_IP_MULTICAST
 324         struct list_head ipm_list;
 325 #endif
 326         __u8 mac[LCS_MAC_LENGTH];
 327         __u16 ip_assists_supported;
 328         __u16 ip_assists_enabled;
 329         __s8 lan_type;
 330         __u32 pkt_seq;
 331         __u16 sequence_no;
 332         __s16 portno;
 333         /* Some info copied from probeinfo */
 334         u8 device_forced;
 335         u8 max_port_no;
 336         u8 hint_port_no;
 337         s16 port_protocol_no;
 338 }  __attribute__ ((aligned(8)));
 339