drivers/net/3c505.h

   1 /*****************************************************************
   2  *
   3  *  defines for 3Com Etherlink Plus adapter
   4  *
   5  *****************************************************************/
   6
   7 #define ELP_DMA       6
   8 #define ELP_RX_PCBS   4
   9 #define ELP_MAX_CARDS 4
  10
  11 /*
  12  * I/O register offsets
  13  */
  14 #define PORT_COMMAND    0x00    /* read/write, 8-bit */
  15 #define PORT_STATUS     0x02    /* read only, 8-bit */
  16 #define PORT_AUXDMA     0x02    /* write only, 8-bit */
  17 #define PORT_DATA       0x04    /* read/write, 16-bit */
  18 #define PORT_CONTROL    0x06    /* read/write, 8-bit */
  19
  20 #define ELP_IO_EXTENT   0x10    /* size of used IO registers */
  21
  22 /*
  23  * host control registers bits
  24  */
  25 #define ATTN    0x80    /* attention */
  26 #define FLSH    0x40    /* flush data register */
  27 #define DMAE    0x20    /* DMA enable */
  28 #define DIR     0x10    /* direction */
  29 #define TCEN    0x08    /* terminal count interrupt enable */
  30 #define CMDE    0x04    /* command register interrupt enable */
  31 #define HSF2    0x02    /* host status flag 2 */
  32 #define HSF1    0x01    /* host status flag 1 */
  33
  34 /*
  35  * combinations of HSF flags used for PCB transmission
  36  */
  37 #define HSF_PCB_ACK     HSF1
  38 #define HSF_PCB_NAK     HSF2
  39 #define HSF_PCB_END     (HSF2|HSF1)
  40 #define HSF_PCB_MASK    (HSF2|HSF1)
  41
  42 /*
  43  * host status register bits
  44  */
  45 #define HRDY    0x80    /* data register ready */
  46 #define HCRE    0x40    /* command register empty */
  47 #define ACRF    0x20    /* adapter command register full */
  48 /* #define DIR  0x10    direction - same as in control register */
  49 #define DONE    0x08    /* DMA done */
  50 #define ASF3    0x04    /* adapter status flag 3 */
  51 #define ASF2    0x02    /* adapter status flag 2 */
  52 #define ASF1    0x01    /* adapter status flag 1 */
  53
  54 /*
  55  * combinations of ASF flags used for PCB reception
  56  */
  57 #define ASF_PCB_ACK     ASF1
  58 #define ASF_PCB_NAK     ASF2
  59 #define ASF_PCB_END     (ASF2|ASF1)
  60 #define ASF_PCB_MASK    (ASF2|ASF1)
  61
  62 /*
  63  * host aux DMA register bits
  64  */
  65 #define DMA_BRST        0x01    /* DMA burst */
  66
  67 /*
  68  * maximum amount of data allowed in a PCB
  69  */
  70 #define MAX_PCB_DATA    62
  71
  72 /*****************************************************************
  73  *
  74  *  timeout value
  75  *      this is a rough value used for loops to stop them from
  76  *      locking up the whole machine in the case of failure or
  77  *      error conditions
  78  *
  79  *****************************************************************/
  80
  81 #define TIMEOUT 300
  82
  83 /*****************************************************************
  84  *
  85  * PCB commands
  86  *
  87  *****************************************************************/
  88
  89 enum {
  90   /*
  91    * host PCB commands
  92    */
  93   CMD_CONFIGURE_ADAPTER_MEMORY  = 0x01,
  94   CMD_CONFIGURE_82586           = 0x02,
  95   CMD_STATION_ADDRESS           = 0x03,
  96   CMD_DMA_DOWNLOAD              = 0x04,
  97   CMD_DMA_UPLOAD                = 0x05,
  98   CMD_PIO_DOWNLOAD              = 0x06,
  99   CMD_PIO_UPLOAD                = 0x07,
 100   CMD_RECEIVE_PACKET            = 0x08,
 101   CMD_TRANSMIT_PACKET           = 0x09,
 102   CMD_NETWORK_STATISTICS        = 0x0a,
 103   CMD_LOAD_MULTICAST_LIST       = 0x0b,
 104   CMD_CLEAR_PROGRAM             = 0x0c,
 105   CMD_DOWNLOAD_PROGRAM          = 0x0d,
 106   CMD_EXECUTE_PROGRAM           = 0x0e,
 107   CMD_SELF_TEST                 = 0x0f,
 108   CMD_SET_STATION_ADDRESS       = 0x10,
 109   CMD_ADAPTER_INFO              = 0x11,
 110   NUM_TRANSMIT_CMDS,
 111
 112   /*
 113    * adapter PCB commands
 114    */
 115   CMD_CONFIGURE_ADAPTER_RESPONSE        = 0x31,
 116   CMD_CONFIGURE_82586_RESPONSE          = 0x32,
 117   CMD_ADDRESS_RESPONSE                  = 0x33,
 118   CMD_DOWNLOAD_DATA_REQUEST             = 0x34,
 119   CMD_UPLOAD_DATA_REQUEST               = 0x35,
 120   CMD_RECEIVE_PACKET_COMPLETE           = 0x38,
 121   CMD_TRANSMIT_PACKET_COMPLETE          = 0x39,
 122   CMD_NETWORK_STATISTICS_RESPONSE       = 0x3a,
 123   CMD_LOAD_MULTICAST_RESPONSE           = 0x3b,
 124   CMD_CLEAR_PROGRAM_RESPONSE            = 0x3c,
 125   CMD_DOWNLOAD_PROGRAM_RESPONSE         = 0x3d,
 126   CMD_EXECUTE_RESPONSE                  = 0x3e,
 127   CMD_SELF_TEST_RESPONSE                = 0x3f,
 128   CMD_SET_ADDRESS_RESPONSE              = 0x40,
 129   CMD_ADAPTER_INFO_RESPONSE             = 0x41
 130 };
 131
 132 /* Definitions for the PCB data structure */
 133
 134 /* Data units */
 135 typedef unsigned char         byte;
 136 typedef unsigned short int    word;
 137 typedef unsigned long int     dword;
 138
 139 /* Data structures */
 140 struct Memconf {
 141         word    cmd_q,
 142                 rcv_q,
 143                 mcast,
 144                 frame,
 145                 rcv_b,
 146                 progs;
 147 };
 148
 149 struct Rcv_pkt {
 150         word    buf_ofs,
 151                 buf_seg,
 152                 buf_len,
 153                 timeout;
 154 };
 155
 156 struct Xmit_pkt {
 157         word    buf_ofs,
 158                 buf_seg,
 159                 pkt_len;
 160 };
 161
 162 struct Rcv_resp {
 163         word    buf_ofs,
 164                 buf_seg,
 165                 buf_len,
 166                 pkt_len,
 167                 timeout,
 168                 status;
 169         dword   timetag;
 170 };
 171
 172 struct Xmit_resp {
 173         word    buf_ofs,
 174                 buf_seg,
 175                 c_stat,
 176                 status;
 177 };
 178
 179
 180 struct Netstat {
 181         dword   tot_recv,
 182                 tot_xmit;
 183         word    err_CRC,
 184                 err_align,
 185                 err_res,
 186                 err_ovrrun;
 187 };
 188
 189
 190 struct Selftest {
 191         word    error;
 192         union {
 193                 word ROM_cksum;
 194                 struct {
 195                         word ofs, seg;
 196                 } RAM;
 197                 word i82586;
 198         } failure;
 199 };
 200
 201 struct Info {
 202         byte    minor_vers,
 203                 major_vers;
 204         word    ROM_cksum,
 205                 RAM_sz,
 206                 free_ofs,
 207                 free_seg;
 208 };
 209
 210 struct Memdump {
 211        word size,
 212             off,
 213             seg;
 214 };
 215
 216 /*
 217 Primary Command Block. The most important data structure. All communication
 218 between the host and the adapter is done with these. (Except for the actual
 219 Ethernet data, which has different packaging.)
 220 */
 221 typedef struct {
 222         byte    command;
 223         byte    length;
 224         union   {
 225                 struct Memconf          memconf;
 226                 word                    configure;
 227                 struct Rcv_pkt          rcv_pkt;
 228                 struct Xmit_pkt         xmit_pkt;
 229                 byte                    multicast[10][6];
 230                 byte                    eth_addr[6];
 231                 byte                    failed;
 232                 struct Rcv_resp         rcv_resp;
 233                 struct Xmit_resp        xmit_resp;
 234                 struct Netstat          netstat;
 235                 struct Selftest         selftest;
 236                 struct Info             info;
 237                 struct Memdump          memdump;
 238                 byte                    raw[62];
 239         } data;
 240 } pcb_struct;
 241
 242 /* These defines for 'configure' */
 243 #define RECV_STATION    0x00
 244 #define RECV_BROAD      0x01
 245 #define RECV_MULTI      0x02
 246 #define RECV_PROMISC    0x04
 247 #define NO_LOOPBACK     0x00
 248 #define INT_LOOPBACK    0x08
 249 #define EXT_LOOPBACK    0x10
 250
 251 /*****************************************************************
 252  *
 253  *  structure to hold context information for adapter
 254  *
 255  *****************************************************************/
 256
 257 #define DMA_BUFFER_SIZE  1600
 258 #define BACKLOG_SIZE      4
 259
 260 typedef struct {
 261         volatile short got[NUM_TRANSMIT_CMDS];  /* flags for
 262                                                    command completion */
 263         pcb_struct tx_pcb;      /* PCB for foreground sending */
 264         pcb_struct rx_pcb;      /* PCB for foreground receiving */
 265         pcb_struct itx_pcb;     /* PCB for background sending */
 266         pcb_struct irx_pcb;     /* PCB for background receiving */
 267         struct net_device_stats stats;
 268
 269         void *dma_buffer;
 270
 271         struct {
 272                 unsigned int length[BACKLOG_SIZE];
 273                 unsigned int in;
 274                 unsigned int out;
 275         } rx_backlog;
 276
 277         struct {
 278                 unsigned int direction;
 279                 unsigned int length;
 280                 struct sk_buff *skb;
 281                 void *target;
 282                 unsigned long start_time;
 283         } current_dma;
 284
 285         /* flags */
 286         unsigned long send_pcb_semaphore;
 287         unsigned long dmaing;
 288         unsigned long busy;
 289
 290         unsigned int rx_active;  /* number of receive PCBs */
 291         volatile unsigned char hcr_val;  /* what we think the HCR contains */
 292         spinlock_t lock;        /* Interrupt v tx lock */
 293 } elp_device;