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