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