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 VERSION_LCS_H "$Revision: 1.19 $"
  10
  11 #define LCS_DBF_TEXT(level, name, text) \
  12         do { \
  13                 debug_text_event(lcs_dbf_##name, level, text); \
  14         } while (0)
  15
  16 #define LCS_DBF_HEX(level,name,addr,len) \
  17 do { \
  18         debug_event(lcs_dbf_##name,level,(void*)(addr),len); \
  19 } while (0)
  20
  21 #define LCS_DBF_TEXT_(level,name,text...) \
  22 do {                                       \
  23         sprintf(debug_buffer, text);  \
  24                 debug_text_event(lcs_dbf_##name,level, debug_buffer);\
  25 } while (0)
  26
  27 /**
  28  * some more definitions for debug or output stuff
  29  */
  30 #define PRINTK_HEADER           " lcs: "
  31
  32 /**
  33  *      sysfs related stuff
  34  */
  35 #define CARD_FROM_DEV(cdev) \
  36         (struct lcs_card *) \
  37         ((struct ccwgroup_device *)cdev->dev.driver_data)->dev.driver_data;
  38 /**
  39  * CCW commands used in this driver
  40  */
  41 #define LCS_CCW_WRITE           0x01
  42 #define LCS_CCW_READ            0x02
  43 #define LCS_CCW_TRANSFER        0x08
  44
  45 /**
  46  * LCS device status primitives
  47  */
  48 #define LCS_CMD_STARTLAN        0x01
  49 #define LCS_CMD_STOPLAN         0x02
  50 #define LCS_CMD_LANSTAT         0x04
  51 #define LCS_CMD_STARTUP         0x07
  52 #define LCS_CMD_SHUTDOWN        0x08
  53 #define LCS_CMD_QIPASSIST       0xb2
  54 #define LCS_CMD_SETIPM          0xb4
  55 #define LCS_CMD_DELIPM          0xb5
  56
  57 #define LCS_INITIATOR_TCPIP     0x00
  58 #define LCS_INITIATOR_LGW       0x01
  59 #define LCS_STD_CMD_SIZE        16
  60 #define LCS_MULTICAST_CMD_SIZE  404
  61
  62 /**
  63  * LCS IPASSIST MASKS,only used when multicast is switched on
  64  */
  65 /* Not supported by LCS */
  66 #define LCS_IPASS_ARP_PROCESSING        0x0001
  67 #define LCS_IPASS_IN_CHECKSUM_SUPPORT   0x0002
  68 #define LCS_IPASS_OUT_CHECKSUM_SUPPORT  0x0004
  69 #define LCS_IPASS_IP_FRAG_REASSEMBLY    0x0008
  70 #define LCS_IPASS_IP_FILTERING          0x0010
  71 /* Supported by lcs 3172 */
  72 #define LCS_IPASS_IPV6_SUPPORT          0x0020
  73 #define LCS_IPASS_MULTICAST_SUPPORT     0x0040
  74
  75 /**
  76  * LCS sense byte definitions
  77  */
  78 #define LCS_SENSE_INTERFACE_DISCONNECT  0x01
  79 #define LCS_SENSE_EQUIPMENT_CHECK       0x10
  80 #define LCS_SENSE_BUS_OUT_CHECK         0x20
  81 #define LCS_SENSE_INTERVENTION_REQUIRED 0x40
  82 #define LCS_SENSE_CMD_REJECT            0x80
  83 #define LCS_SENSE_RESETTING_EVENT       0x0080
  84 #define LCS_SENSE_DEVICE_ONLINE         0x0020
  85
  86 /**
  87  * LCS packet type definitions
  88  */
  89 #define LCS_FRAME_TYPE_CONTROL          0
  90 #define LCS_FRAME_TYPE_ENET             1
  91 #define LCS_FRAME_TYPE_TR               2
  92 #define LCS_FRAME_TYPE_FDDI             7
  93 #define LCS_FRAME_TYPE_AUTO             -1
  94
  95 /**
  96  * some more definitions,we will sort them later
  97  */
  98 #define LCS_ILLEGAL_OFFSET              0xffff
  99 #define LCS_IOBUFFERSIZE                0x5000
 100 #define LCS_NUM_BUFFS                   8       /* needs to be power of 2 */
 101 #define LCS_MAC_LENGTH                  6
 102 #define LCS_INVALID_PORT_NO             -1
 103 #define LCS_LANCMD_TIMEOUT_DEFAULT      5
 104
 105 /**
 106  * Multicast state
 107  */
 108 #define  LCS_IPM_STATE_SET_REQUIRED     0
 109 #define  LCS_IPM_STATE_DEL_REQUIRED     1
 110 #define  LCS_IPM_STATE_ON_CARD          2
 111
 112 /**
 113  * LCS IP Assist declarations
 114  * seems to be only used for multicast
 115  */
 116 #define  LCS_IPASS_ARP_PROCESSING       0x0001
 117 #define  LCS_IPASS_INBOUND_CSUM_SUPP    0x0002
 118 #define  LCS_IPASS_OUTBOUND_CSUM_SUPP   0x0004
 119 #define  LCS_IPASS_IP_FRAG_REASSEMBLY   0x0008
 120 #define  LCS_IPASS_IP_FILTERING         0x0010
 121 #define  LCS_IPASS_IPV6_SUPPORT         0x0020
 122 #define  LCS_IPASS_MULTICAST_SUPPORT    0x0040
 123
 124 /**
 125  * LCS Buffer states
 126  */
 127 enum lcs_buffer_states {
 128         BUF_STATE_EMPTY,        /* buffer is empty */
 129         BUF_STATE_LOCKED,       /* buffer is locked, don't touch */
 130         BUF_STATE_READY,        /* buffer is ready for read/write */
 131         BUF_STATE_PROCESSED,
 132 };
 133
 134 /**
 135  * LCS Channel State Machine declarations
 136  */
 137 enum lcs_channel_states {
 138         CH_STATE_INIT,
 139         CH_STATE_HALTED,
 140         CH_STATE_STOPPED,
 141         CH_STATE_RUNNING,
 142         CH_STATE_SUSPENDED,
 143         CH_STATE_CLEARED,
 144 };
 145
 146 /**
 147  * LCS device state machine
 148  */
 149 enum lcs_dev_states {
 150         DEV_STATE_DOWN,
 151         DEV_STATE_UP,
 152         DEV_STATE_RECOVER,
 153 };
 154
 155 enum lcs_threads {
 156         LCS_SET_MC_THREAD       = 1,
 157         LCS_STARTLAN_THREAD     = 2,
 158         LCS_STOPLAN_THREAD      = 4,
 159         LCS_STARTUP_THREAD      = 8,
 160 };
 161 /**
 162  * LCS struct declarations
 163  */
 164 struct lcs_header {
 165         __u16  offset;
 166         __u8   type;
 167         __u8   slot;
 168 }  __attribute__ ((packed));
 169
 170 struct lcs_ip_mac_pair {
 171         __u32  ip_addr;
 172         __u8   mac_addr[LCS_MAC_LENGTH];
 173         __u8   reserved[2];
 174 }  __attribute__ ((packed));
 175
 176 struct lcs_ipm_list {
 177         struct list_head list;
 178         struct lcs_ip_mac_pair ipm;
 179         __u8 ipm_state;
 180 };
 181
 182 struct lcs_cmd {
 183         __u16  offset;
 184         __u8   type;
 185         __u8   slot;
 186         __u8   cmd_code;
 187         __u8   initiator;
 188         __u16  sequence_no;
 189         __u16  return_code;
 190         union {
 191                 struct {
 192                         __u8   lan_type;
 193                         __u8   portno;
 194                         __u16  parameter_count;
 195                         __u8   operator_flags[3];
 196                         __u8   reserved[3];
 197                 } lcs_std_cmd;
 198                 struct {
 199                         __u16  unused1;
 200                         __u16  buff_size;
 201                         __u8   unused2[6];
 202                 } lcs_startup;
 203                 struct {
 204                         __u8   lan_type;
 205                         __u8   portno;
 206                         __u8   unused[10];
 207                         __u8   mac_addr[LCS_MAC_LENGTH];
 208                         __u32  num_packets_deblocked;
 209                         __u32  num_packets_blocked;
 210                         __u32  num_packets_tx_on_lan;
 211                         __u32  num_tx_errors_detected;
 212                         __u32  num_tx_packets_disgarded;
 213                         __u32  num_packets_rx_from_lan;
 214                         __u32  num_rx_errors_detected;
 215                         __u32  num_rx_discarded_nobuffs_avail;
 216                         __u32  num_rx_packets_too_large;
 217                 } lcs_lanstat_cmd;
 218 #ifdef CONFIG_IP_MULTICAST
 219                 struct {
 220                         __u8   lan_type;
 221                         __u8   portno;
 222                         __u16  num_ip_pairs;
 223                         __u16  ip_assists_supported;
 224                         __u16  ip_assists_enabled;
 225                         __u16  version;
 226                         struct {
 227                                 struct lcs_ip_mac_pair
 228                                 ip_mac_pair[32];
 229                                 __u32     response_data;
 230                         } lcs_ipass_ctlmsg __attribute ((packed));
 231                 } lcs_qipassist __attribute__ ((packed));
 232 #endif /*CONFIG_IP_MULTICAST */
 233         } cmd __attribute__ ((packed));
 234 }  __attribute__ ((packed));
 235
 236 /**
 237  * Forward declarations.
 238  */
 239 struct lcs_card;
 240 struct lcs_channel;
 241
 242 /**
 243  * Definition of an lcs buffer.
 244  */
 245 struct lcs_buffer {
 246         enum lcs_buffer_states state;
 247         void *data;
 248         int count;
 249         /* Callback for completion notification. */
 250         void (*callback)(struct lcs_channel *, struct lcs_buffer *);
 251 };
 252
 253 struct lcs_reply {
 254         struct list_head list;
 255         __u16 sequence_no;
 256         atomic_t refcnt;
 257         /* Callback for completion notification. */
 258         void (*callback)(struct lcs_card *, struct lcs_cmd *);
 259         wait_queue_head_t wait_q;
 260         struct lcs_card *card;
 261         int received;
 262         int rc;
 263 };
 264
 265 /**
 266  * Definition of an lcs channel
 267  */
 268 struct lcs_channel {
 269         enum lcs_channel_states state;
 270         struct ccw_device *ccwdev;
 271         struct ccw1 ccws[LCS_NUM_BUFFS + 1];
 272         wait_queue_head_t wait_q;
 273         struct tasklet_struct irq_tasklet;
 274         struct lcs_buffer iob[LCS_NUM_BUFFS];
 275         int io_idx;
 276         int buf_idx;
 277 };
 278
 279
 280 /**
 281  * definition of the lcs card
 282  */
 283 struct lcs_card {
 284         spinlock_t lock;
 285         spinlock_t ipm_lock;
 286         enum lcs_dev_states state;
 287         struct net_device *dev;
 288         struct net_device_stats stats;
 289         unsigned short (*lan_type_trans)(struct sk_buff *skb,
 290                                          struct net_device *dev);
 291         struct lcs_channel read;
 292         struct lcs_channel write;
 293         struct lcs_buffer *tx_buffer;
 294         int tx_emitted;
 295         struct list_head lancmd_waiters;
 296         int lancmd_timeout;
 297
 298         struct work_struct kernel_thread_starter;
 299         spinlock_t mask_lock;
 300         unsigned long thread_start_mask;
 301         unsigned long thread_running_mask;
 302         unsigned long thread_allowed_mask;
 303         wait_queue_head_t wait_q;
 304
 305 #ifdef CONFIG_IP_MULTICAST
 306         struct list_head ipm_list;
 307 #endif
 308         __u8 mac[LCS_MAC_LENGTH];
 309         __u16 ip_assists_supported;
 310         __u16 ip_assists_enabled;
 311         __s8 lan_type;
 312         __u32 pkt_seq;
 313         __u16 sequence_no;
 314         __s16 portno;
 315         /* Some info copied from probeinfo */
 316         u8 device_forced;
 317         u8 max_port_no;
 318         u8 hint_port_no;
 319         s16 port_protocol_no;
 320 }  __attribute__ ((aligned(8)));
 321