drivers/atm/nicstar.h

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   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * nicstar.h
   4  *
   5  * Header file for the nicstar device driver.
   6  *
   7  * Author: Rui Prior (rprior@inescn.pt)
   8  * PowerPC support by Jay Talbott (jay_talbott@mcg.mot.com) April 1999
   9  *
  10  * (C) INESC 1998
  11  */
  12 
  13 #ifndef _LINUX_NICSTAR_H_
  14 #define _LINUX_NICSTAR_H_
  15 
  16 /* Includes */
  17 
  18 #include <linux/types.h>
  19 #include <linux/pci.h>
  20 #include <linux/idr.h>
  21 #include <linux/uio.h>
  22 #include <linux/skbuff.h>
  23 #include <linux/atmdev.h>
  24 #include <linux/atm_nicstar.h>
  25 
  26 /* Options */
  27 
  28 #define NS_MAX_CARDS 4          /* Maximum number of NICStAR based cards
  29                                    controlled by the device driver. Must
  30                                    be <= 5 */
  31 
  32 #undef RCQ_SUPPORT              /* Do not define this for now */
  33 
  34 #define NS_TST_NUM_ENTRIES 2340 /* + 1 for return */
  35 #define NS_TST_RESERVED 340     /* N. entries reserved for UBR/ABR/VBR */
  36 
  37 #define NS_SMBUFSIZE 48         /* 48, 96, 240 or 2048 */
  38 #define NS_LGBUFSIZE 16384      /* 2048, 4096, 8192 or 16384 */
  39 #define NS_RSQSIZE 8192         /* 2048, 4096 or 8192 */
  40 #define NS_VPIBITS 2            /* 0, 1, 2, or 8 */
  41 
  42 #define NS_MAX_RCTSIZE 4096     /* Number of entries. 4096 or 16384.
  43                                    Define 4096 only if (all) your card(s)
  44                                    have 32K x 32bit SRAM, in which case
  45                                    setting this to 16384 will just waste a
  46                                    lot of memory.
  47                                    Setting this to 4096 for a card with
  48                                    128K x 32bit SRAM will limit the maximum
  49                                    VCI. */
  50 
  51                                 /*#define NS_PCI_LATENCY 64*//* Must be a multiple of 32 */
  52 
  53         /* Number of buffers initially allocated */
  54 #define NUM_SB 32               /* Must be even */
  55 #define NUM_LB 24               /* Must be even */
  56 #define NUM_HB 8                /* Pre-allocated huge buffers */
  57 #define NUM_IOVB 48             /* Iovec buffers */
  58 
  59         /* Lower level for count of buffers */
  60 #define MIN_SB 8                /* Must be even */
  61 #define MIN_LB 8                /* Must be even */
  62 #define MIN_HB 6
  63 #define MIN_IOVB 8
  64 
  65         /* Upper level for count of buffers */
  66 #define MAX_SB 64               /* Must be even, <= 508 */
  67 #define MAX_LB 48               /* Must be even, <= 508 */
  68 #define MAX_HB 10
  69 #define MAX_IOVB 80
  70 
  71         /* These are the absolute maximum allowed for the ioctl() */
  72 #define TOP_SB 256              /* Must be even, <= 508 */
  73 #define TOP_LB 128              /* Must be even, <= 508 */
  74 #define TOP_HB 64
  75 #define TOP_IOVB 256
  76 
  77 #define MAX_TBD_PER_VC 1        /* Number of TBDs before a TSR */
  78 #define MAX_TBD_PER_SCQ 10      /* Only meaningful for variable rate SCQs */
  79 
  80 #undef ENABLE_TSQFIE
  81 
  82 #define SCQFULL_TIMEOUT (5 * HZ)
  83 
  84 #define NS_POLL_PERIOD (HZ)
  85 
  86 #define PCR_TOLERANCE (1.0001)
  87 
  88 /* ESI stuff */
  89 
  90 #define NICSTAR_EPROM_MAC_ADDR_OFFSET 0x6C
  91 #define NICSTAR_EPROM_MAC_ADDR_OFFSET_ALT 0xF6
  92 
  93 /* #defines */
  94 
  95 #define NS_IOREMAP_SIZE 4096
  96 
  97 /*
  98  * BUF_XX distinguish the Rx buffers depending on their (small/large) size.
  99  * BUG_SM and BUG_LG are both used by the driver and the device.
 100  * BUF_NONE is only used by the driver.
 101  */
 102 #define BUF_SM          0x00000000      /* These two are used for push_rxbufs() */
 103 #define BUF_LG          0x00000001      /* CMD, Write_FreeBufQ, LBUF bit */
 104 #define BUF_NONE        0xffffffff      /* Software only: */
 105 
 106 #define NS_HBUFSIZE 65568       /* Size of max. AAL5 PDU */
 107 #define NS_MAX_IOVECS (2 + (65568 - NS_SMBUFSIZE) / \
 108                        (NS_LGBUFSIZE - (NS_LGBUFSIZE % 48)))
 109 #define NS_IOVBUFSIZE (NS_MAX_IOVECS * (sizeof(struct iovec)))
 110 
 111 #define NS_SMBUFSIZE_USABLE (NS_SMBUFSIZE - NS_SMBUFSIZE % 48)
 112 #define NS_LGBUFSIZE_USABLE (NS_LGBUFSIZE - NS_LGBUFSIZE % 48)
 113 
 114 #define NS_AAL0_HEADER (ATM_AAL0_SDU - ATM_CELL_PAYLOAD)        /* 4 bytes */
 115 
 116 #define NS_SMSKBSIZE (NS_SMBUFSIZE + NS_AAL0_HEADER)
 117 #define NS_LGSKBSIZE (NS_SMBUFSIZE + NS_LGBUFSIZE)
 118 
 119 /* NICStAR structures located in host memory */
 120 
 121 /*
 122  * RSQ - Receive Status Queue
 123  *
 124  * Written by the NICStAR, read by the device driver.
 125  */
 126 
 127 typedef struct ns_rsqe {
 128         u32 word_1;
 129         u32 buffer_handle;
 130         u32 final_aal5_crc32;
 131         u32 word_4;
 132 } ns_rsqe;
 133 
 134 #define ns_rsqe_vpi(ns_rsqep) \
 135         ((le32_to_cpu((ns_rsqep)->word_1) & 0x00FF0000) >> 16)
 136 #define ns_rsqe_vci(ns_rsqep) \
 137         (le32_to_cpu((ns_rsqep)->word_1) & 0x0000FFFF)
 138 
 139 #define NS_RSQE_VALID      0x80000000
 140 #define NS_RSQE_NZGFC      0x00004000
 141 #define NS_RSQE_EOPDU      0x00002000
 142 #define NS_RSQE_BUFSIZE    0x00001000
 143 #define NS_RSQE_CONGESTION 0x00000800
 144 #define NS_RSQE_CLP        0x00000400
 145 #define NS_RSQE_CRCERR     0x00000200
 146 
 147 #define NS_RSQE_BUFSIZE_SM 0x00000000
 148 #define NS_RSQE_BUFSIZE_LG 0x00001000
 149 
 150 #define ns_rsqe_valid(ns_rsqep) \
 151         (le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_VALID)
 152 #define ns_rsqe_nzgfc(ns_rsqep) \
 153         (le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_NZGFC)
 154 #define ns_rsqe_eopdu(ns_rsqep) \
 155         (le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_EOPDU)
 156 #define ns_rsqe_bufsize(ns_rsqep) \
 157         (le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_BUFSIZE)
 158 #define ns_rsqe_congestion(ns_rsqep) \
 159         (le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_CONGESTION)
 160 #define ns_rsqe_clp(ns_rsqep) \
 161         (le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_CLP)
 162 #define ns_rsqe_crcerr(ns_rsqep) \
 163         (le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_CRCERR)
 164 
 165 #define ns_rsqe_cellcount(ns_rsqep) \
 166         (le32_to_cpu((ns_rsqep)->word_4) & 0x000001FF)
 167 #define ns_rsqe_init(ns_rsqep) \
 168         ((ns_rsqep)->word_4 = cpu_to_le32(0x00000000))
 169 
 170 #define NS_RSQ_NUM_ENTRIES (NS_RSQSIZE / 16)
 171 #define NS_RSQ_ALIGNMENT NS_RSQSIZE
 172 
 173 /*
 174  * RCQ - Raw Cell Queue
 175  *
 176  * Written by the NICStAR, read by the device driver.
 177  */
 178 
 179 typedef struct cell_payload {
 180         u32 word[12];
 181 } cell_payload;
 182 
 183 typedef struct ns_rcqe {
 184         u32 word_1;
 185         u32 word_2;
 186         u32 word_3;
 187         u32 word_4;
 188         cell_payload payload;
 189 } ns_rcqe;
 190 
 191 #define NS_RCQE_SIZE 64         /* bytes */
 192 
 193 #define ns_rcqe_islast(ns_rcqep) \
 194         (le32_to_cpu((ns_rcqep)->word_2) != 0x00000000)
 195 #define ns_rcqe_cellheader(ns_rcqep) \
 196         (le32_to_cpu((ns_rcqep)->word_1))
 197 #define ns_rcqe_nextbufhandle(ns_rcqep) \
 198         (le32_to_cpu((ns_rcqep)->word_2))
 199 
 200 /*
 201  * SCQ - Segmentation Channel Queue
 202  *
 203  * Written by the device driver, read by the NICStAR.
 204  */
 205 
 206 typedef struct ns_scqe {
 207         u32 word_1;
 208         u32 word_2;
 209         u32 word_3;
 210         u32 word_4;
 211 } ns_scqe;
 212 
 213    /* NOTE: SCQ entries can be either a TBD (Transmit Buffer Descriptors)
 214       or TSR (Transmit Status Requests) */
 215 
 216 #define NS_SCQE_TYPE_TBD 0x00000000
 217 #define NS_SCQE_TYPE_TSR 0x80000000
 218 
 219 #define NS_TBD_EOPDU 0x40000000
 220 #define NS_TBD_AAL0  0x00000000
 221 #define NS_TBD_AAL34 0x04000000
 222 #define NS_TBD_AAL5  0x08000000
 223 
 224 #define NS_TBD_VPI_MASK 0x0FF00000
 225 #define NS_TBD_VCI_MASK 0x000FFFF0
 226 #define NS_TBD_VC_MASK (NS_TBD_VPI_MASK | NS_TBD_VCI_MASK)
 227 
 228 #define NS_TBD_VPI_SHIFT 20
 229 #define NS_TBD_VCI_SHIFT 4
 230 
 231 #define ns_tbd_mkword_1(flags, m, n, buflen) \
 232       (cpu_to_le32((flags) | (m) << 23 | (n) << 16 | (buflen)))
 233 #define ns_tbd_mkword_1_novbr(flags, buflen) \
 234       (cpu_to_le32((flags) | (buflen) | 0x00810000))
 235 #define ns_tbd_mkword_3(control, pdulen) \
 236       (cpu_to_le32((control) << 16 | (pdulen)))
 237 #define ns_tbd_mkword_4(gfc, vpi, vci, pt, clp) \
 238       (cpu_to_le32((gfc) << 28 | (vpi) << 20 | (vci) << 4 | (pt) << 1 | (clp)))
 239 
 240 #define NS_TSR_INTENABLE 0x20000000
 241 
 242 #define NS_TSR_SCDISVBR 0xFFFF  /* Use as scdi for VBR SCD */
 243 
 244 #define ns_tsr_mkword_1(flags) \
 245         (cpu_to_le32(NS_SCQE_TYPE_TSR | (flags)))
 246 #define ns_tsr_mkword_2(scdi, scqi) \
 247         (cpu_to_le32((scdi) << 16 | 0x00008000 | (scqi)))
 248 
 249 #define ns_scqe_is_tsr(ns_scqep) \
 250         (le32_to_cpu((ns_scqep)->word_1) & NS_SCQE_TYPE_TSR)
 251 
 252 #define VBR_SCQ_NUM_ENTRIES 512
 253 #define VBR_SCQSIZE 8192
 254 #define CBR_SCQ_NUM_ENTRIES 64
 255 #define CBR_SCQSIZE 1024
 256 
 257 #define NS_SCQE_SIZE 16
 258 
 259 /*
 260  * TSQ - Transmit Status Queue
 261  *
 262  * Written by the NICStAR, read by the device driver.
 263  */
 264 
 265 typedef struct ns_tsi {
 266         u32 word_1;
 267         u32 word_2;
 268 } ns_tsi;
 269 
 270    /* NOTE: The first word can be a status word copied from the TSR which
 271       originated the TSI, or a timer overflow indicator. In this last
 272       case, the value of the first word is all zeroes. */
 273 
 274 #define NS_TSI_EMPTY          0x80000000
 275 #define NS_TSI_TIMESTAMP_MASK 0x00FFFFFF
 276 
 277 #define ns_tsi_isempty(ns_tsip) \
 278         (le32_to_cpu((ns_tsip)->word_2) & NS_TSI_EMPTY)
 279 #define ns_tsi_gettimestamp(ns_tsip) \
 280         (le32_to_cpu((ns_tsip)->word_2) & NS_TSI_TIMESTAMP_MASK)
 281 
 282 #define ns_tsi_init(ns_tsip) \
 283         ((ns_tsip)->word_2 = cpu_to_le32(NS_TSI_EMPTY))
 284 
 285 #define NS_TSQSIZE 8192
 286 #define NS_TSQ_NUM_ENTRIES 1024
 287 #define NS_TSQ_ALIGNMENT 8192
 288 
 289 #define NS_TSI_SCDISVBR NS_TSR_SCDISVBR
 290 
 291 #define ns_tsi_tmrof(ns_tsip) \
 292         (le32_to_cpu((ns_tsip)->word_1) == 0x00000000)
 293 #define ns_tsi_getscdindex(ns_tsip) \
 294         ((le32_to_cpu((ns_tsip)->word_1) & 0xFFFF0000) >> 16)
 295 #define ns_tsi_getscqpos(ns_tsip) \
 296         (le32_to_cpu((ns_tsip)->word_1) & 0x00007FFF)
 297 
 298 /* NICStAR structures located in local SRAM */
 299 
 300 /*
 301  * RCT - Receive Connection Table
 302  *
 303  * Written by both the NICStAR and the device driver.
 304  */
 305 
 306 typedef struct ns_rcte {
 307         u32 word_1;
 308         u32 buffer_handle;
 309         u32 dma_address;
 310         u32 aal5_crc32;
 311 } ns_rcte;
 312 
 313 #define NS_RCTE_BSFB            0x00200000      /* Rev. D only */
 314 #define NS_RCTE_NZGFC           0x00100000
 315 #define NS_RCTE_CONNECTOPEN     0x00080000
 316 #define NS_RCTE_AALMASK         0x00070000
 317 #define NS_RCTE_AAL0            0x00000000
 318 #define NS_RCTE_AAL34           0x00010000
 319 #define NS_RCTE_AAL5            0x00020000
 320 #define NS_RCTE_RCQ             0x00030000
 321 #define NS_RCTE_RAWCELLINTEN    0x00008000
 322 #define NS_RCTE_RXCONSTCELLADDR 0x00004000
 323 #define NS_RCTE_BUFFVALID       0x00002000
 324 #define NS_RCTE_FBDSIZE         0x00001000
 325 #define NS_RCTE_EFCI            0x00000800
 326 #define NS_RCTE_CLP             0x00000400
 327 #define NS_RCTE_CRCERROR        0x00000200
 328 #define NS_RCTE_CELLCOUNT_MASK  0x000001FF
 329 
 330 #define NS_RCTE_FBDSIZE_SM 0x00000000
 331 #define NS_RCTE_FBDSIZE_LG 0x00001000
 332 
 333 #define NS_RCT_ENTRY_SIZE 4     /* Number of dwords */
 334 
 335    /* NOTE: We could make macros to contruct the first word of the RCTE,
 336       but that doesn't seem to make much sense... */
 337 
 338 /*
 339  * FBD - Free Buffer Descriptor
 340  *
 341  * Written by the device driver using via the command register.
 342  */
 343 
 344 typedef struct ns_fbd {
 345         u32 buffer_handle;
 346         u32 dma_address;
 347 } ns_fbd;
 348 
 349 /*
 350  * TST - Transmit Schedule Table
 351  *
 352  * Written by the device driver.
 353  */
 354 
 355 typedef u32 ns_tste;
 356 
 357 #define NS_TST_OPCODE_MASK 0x60000000
 358 
 359 #define NS_TST_OPCODE_NULL     0x00000000       /* Insert null cell */
 360 #define NS_TST_OPCODE_FIXED    0x20000000       /* Cell from a fixed rate channel */
 361 #define NS_TST_OPCODE_VARIABLE 0x40000000
 362 #define NS_TST_OPCODE_END      0x60000000       /* Jump */
 363 
 364 #define ns_tste_make(opcode, sramad) (opcode | sramad)
 365 
 366    /* NOTE:
 367 
 368       - When the opcode is FIXED, sramad specifies the SRAM address of the
 369       SCD for that fixed rate channel.
 370       - When the opcode is END, sramad specifies the SRAM address of the
 371       location of the next TST entry to read.
 372     */
 373 
 374 /*
 375  * SCD - Segmentation Channel Descriptor
 376  *
 377  * Written by both the device driver and the NICStAR
 378  */
 379 
 380 typedef struct ns_scd {
 381         u32 word_1;
 382         u32 word_2;
 383         u32 partial_aal5_crc;
 384         u32 reserved;
 385         ns_scqe cache_a;
 386         ns_scqe cache_b;
 387 } ns_scd;
 388 
 389 #define NS_SCD_BASE_MASK_VAR 0xFFFFE000 /* Variable rate */
 390 #define NS_SCD_BASE_MASK_FIX 0xFFFFFC00 /* Fixed rate */
 391 #define NS_SCD_TAIL_MASK_VAR 0x00001FF0
 392 #define NS_SCD_TAIL_MASK_FIX 0x000003F0
 393 #define NS_SCD_HEAD_MASK_VAR 0x00001FF0
 394 #define NS_SCD_HEAD_MASK_FIX 0x000003F0
 395 #define NS_SCD_XMITFOREVER   0x02000000
 396 
 397    /* NOTE: There are other fields in word 2 of the SCD, but as they should
 398       not be needed in the device driver they are not defined here. */
 399 
 400 /* NICStAR local SRAM memory map */
 401 
 402 #define NS_RCT           0x00000
 403 #define NS_RCT_32_END    0x03FFF
 404 #define NS_RCT_128_END   0x0FFFF
 405 #define NS_UNUSED_32     0x04000
 406 #define NS_UNUSED_128    0x10000
 407 #define NS_UNUSED_END    0x1BFFF
 408 #define NS_TST_FRSCD     0x1C000
 409 #define NS_TST_FRSCD_END 0x1E7DB
 410 #define NS_VRSCD2        0x1E7DC
 411 #define NS_VRSCD2_END    0x1E7E7
 412 #define NS_VRSCD1        0x1E7E8
 413 #define NS_VRSCD1_END    0x1E7F3
 414 #define NS_VRSCD0        0x1E7F4
 415 #define NS_VRSCD0_END    0x1E7FF
 416 #define NS_RXFIFO        0x1E800
 417 #define NS_RXFIFO_END    0x1F7FF
 418 #define NS_SMFBQ         0x1F800
 419 #define NS_SMFBQ_END     0x1FBFF
 420 #define NS_LGFBQ         0x1FC00
 421 #define NS_LGFBQ_END     0x1FFFF
 422 
 423 /* NISCtAR operation registers */
 424 
 425 /* See Section 3.4 of `IDT77211 NICStAR User Manual' from www.idt.com */
 426 
 427 enum ns_regs {
 428         DR0 = 0x00,             /* Data Register 0 R/W */
 429         DR1 = 0x04,             /* Data Register 1 W */
 430         DR2 = 0x08,             /* Data Register 2 W */
 431         DR3 = 0x0C,             /* Data Register 3 W */
 432         CMD = 0x10,             /* Command W */
 433         CFG = 0x14,             /* Configuration R/W */
 434         STAT = 0x18,            /* Status R/W */
 435         RSQB = 0x1C,            /* Receive Status Queue Base W */
 436         RSQT = 0x20,            /* Receive Status Queue Tail R */
 437         RSQH = 0x24,            /* Receive Status Queue Head W */
 438         CDC = 0x28,             /* Cell Drop Counter R/clear */
 439         VPEC = 0x2C,            /* VPI/VCI Lookup Error Count R/clear */
 440         ICC = 0x30,             /* Invalid Cell Count R/clear */
 441         RAWCT = 0x34,           /* Raw Cell Tail R */
 442         TMR = 0x38,             /* Timer R */
 443         TSTB = 0x3C,            /* Transmit Schedule Table Base R/W */
 444         TSQB = 0x40,            /* Transmit Status Queue Base W */
 445         TSQT = 0x44,            /* Transmit Status Queue Tail R */
 446         TSQH = 0x48,            /* Transmit Status Queue Head W */
 447         GP = 0x4C,              /* General Purpose R/W */
 448         VPM = 0x50              /* VPI/VCI Mask W */
 449 };
 450 
 451 /* NICStAR commands issued to the CMD register */
 452 
 453 /* Top 4 bits are command opcode, lower 28 are parameters. */
 454 
 455 #define NS_CMD_NO_OPERATION         0x00000000
 456         /* params always 0 */
 457 
 458 #define NS_CMD_OPENCLOSE_CONNECTION 0x20000000
 459         /* b19{1=open,0=close} b18-2{SRAM addr} */
 460 
 461 #define NS_CMD_WRITE_SRAM           0x40000000
 462         /* b18-2{SRAM addr} b1-0{burst size} */
 463 
 464 #define NS_CMD_READ_SRAM            0x50000000
 465         /* b18-2{SRAM addr} */
 466 
 467 #define NS_CMD_WRITE_FREEBUFQ       0x60000000
 468         /* b0{large buf indicator} */
 469 
 470 #define NS_CMD_READ_UTILITY         0x80000000
 471         /* b8{1=select UTL_CS1} b9{1=select UTL_CS0} b7-0{bus addr} */
 472 
 473 #define NS_CMD_WRITE_UTILITY        0x90000000
 474         /* b8{1=select UTL_CS1} b9{1=select UTL_CS0} b7-0{bus addr} */
 475 
 476 #define NS_CMD_OPEN_CONNECTION (NS_CMD_OPENCLOSE_CONNECTION | 0x00080000)
 477 #define NS_CMD_CLOSE_CONNECTION NS_CMD_OPENCLOSE_CONNECTION
 478 
 479 /* NICStAR configuration bits */
 480 
 481 #define NS_CFG_SWRST          0x80000000        /* Software Reset */
 482 #define NS_CFG_RXPATH         0x20000000        /* Receive Path Enable */
 483 #define NS_CFG_SMBUFSIZE_MASK 0x18000000        /* Small Receive Buffer Size */
 484 #define NS_CFG_LGBUFSIZE_MASK 0x06000000        /* Large Receive Buffer Size */
 485 #define NS_CFG_EFBIE          0x01000000        /* Empty Free Buffer Queue
 486                                                    Interrupt Enable */
 487 #define NS_CFG_RSQSIZE_MASK   0x00C00000        /* Receive Status Queue Size */
 488 #define NS_CFG_ICACCEPT       0x00200000        /* Invalid Cell Accept */
 489 #define NS_CFG_IGNOREGFC      0x00100000        /* Ignore General Flow Control */
 490 #define NS_CFG_VPIBITS_MASK   0x000C0000        /* VPI/VCI Bits Size Select */
 491 #define NS_CFG_RCTSIZE_MASK   0x00030000        /* Receive Connection Table Size */
 492 #define NS_CFG_VCERRACCEPT    0x00008000        /* VPI/VCI Error Cell Accept */
 493 #define NS_CFG_RXINT_MASK     0x00007000        /* End of Receive PDU Interrupt
 494                                                    Handling */
 495 #define NS_CFG_RAWIE          0x00000800        /* Raw Cell Qu' Interrupt Enable */
 496 #define NS_CFG_RSQAFIE        0x00000400        /* Receive Queue Almost Full
 497                                                    Interrupt Enable */
 498 #define NS_CFG_RXRM           0x00000200        /* Receive RM Cells */
 499 #define NS_CFG_TMRROIE        0x00000080        /* Timer Roll Over Interrupt
 500                                                    Enable */
 501 #define NS_CFG_TXEN           0x00000020        /* Transmit Operation Enable */
 502 #define NS_CFG_TXIE           0x00000010        /* Transmit Status Interrupt
 503                                                    Enable */
 504 #define NS_CFG_TXURIE         0x00000008        /* Transmit Under-run Interrupt
 505                                                    Enable */
 506 #define NS_CFG_UMODE          0x00000004        /* Utopia Mode (cell/byte) Select */
 507 #define NS_CFG_TSQFIE         0x00000002        /* Transmit Status Queue Full
 508                                                    Interrupt Enable */
 509 #define NS_CFG_PHYIE          0x00000001        /* PHY Interrupt Enable */
 510 
 511 #define NS_CFG_SMBUFSIZE_48    0x00000000
 512 #define NS_CFG_SMBUFSIZE_96    0x08000000
 513 #define NS_CFG_SMBUFSIZE_240   0x10000000
 514 #define NS_CFG_SMBUFSIZE_2048  0x18000000
 515 
 516 #define NS_CFG_LGBUFSIZE_2048  0x00000000
 517 #define NS_CFG_LGBUFSIZE_4096  0x02000000
 518 #define NS_CFG_LGBUFSIZE_8192  0x04000000
 519 #define NS_CFG_LGBUFSIZE_16384 0x06000000
 520 
 521 #define NS_CFG_RSQSIZE_2048 0x00000000
 522 #define NS_CFG_RSQSIZE_4096 0x00400000
 523 #define NS_CFG_RSQSIZE_8192 0x00800000
 524 
 525 #define NS_CFG_VPIBITS_0 0x00000000
 526 #define NS_CFG_VPIBITS_1 0x00040000
 527 #define NS_CFG_VPIBITS_2 0x00080000
 528 #define NS_CFG_VPIBITS_8 0x000C0000
 529 
 530 #define NS_CFG_RCTSIZE_4096_ENTRIES  0x00000000
 531 #define NS_CFG_RCTSIZE_8192_ENTRIES  0x00010000
 532 #define NS_CFG_RCTSIZE_16384_ENTRIES 0x00020000
 533 
 534 #define NS_CFG_RXINT_NOINT   0x00000000
 535 #define NS_CFG_RXINT_NODELAY 0x00001000
 536 #define NS_CFG_RXINT_314US   0x00002000
 537 #define NS_CFG_RXINT_624US   0x00003000
 538 #define NS_CFG_RXINT_899US   0x00004000
 539 
 540 /* NICStAR STATus bits */
 541 
 542 #define NS_STAT_SFBQC_MASK 0xFF000000   /* hi 8 bits Small Buffer Queue Count */
 543 #define NS_STAT_LFBQC_MASK 0x00FF0000   /* hi 8 bits Large Buffer Queue Count */
 544 #define NS_STAT_TSIF       0x00008000   /* Transmit Status Queue Indicator */
 545 #define NS_STAT_TXICP      0x00004000   /* Transmit Incomplete PDU */
 546 #define NS_STAT_TSQF       0x00001000   /* Transmit Status Queue Full */
 547 #define NS_STAT_TMROF      0x00000800   /* Timer Overflow */
 548 #define NS_STAT_PHYI       0x00000400   /* PHY Device Interrupt */
 549 #define NS_STAT_CMDBZ      0x00000200   /* Command Busy */
 550 #define NS_STAT_SFBQF      0x00000100   /* Small Buffer Queue Full */
 551 #define NS_STAT_LFBQF      0x00000080   /* Large Buffer Queue Full */
 552 #define NS_STAT_RSQF       0x00000040   /* Receive Status Queue Full */
 553 #define NS_STAT_EOPDU      0x00000020   /* End of PDU */
 554 #define NS_STAT_RAWCF      0x00000010   /* Raw Cell Flag */
 555 #define NS_STAT_SFBQE      0x00000008   /* Small Buffer Queue Empty */
 556 #define NS_STAT_LFBQE      0x00000004   /* Large Buffer Queue Empty */
 557 #define NS_STAT_RSQAF      0x00000002   /* Receive Status Queue Almost Full */
 558 
 559 #define ns_stat_sfbqc_get(stat) (((stat) & NS_STAT_SFBQC_MASK) >> 23)
 560 #define ns_stat_lfbqc_get(stat) (((stat) & NS_STAT_LFBQC_MASK) >> 15)
 561 
 562 /* #defines which depend on other #defines */
 563 
 564 #define NS_TST0 NS_TST_FRSCD
 565 #define NS_TST1 (NS_TST_FRSCD + NS_TST_NUM_ENTRIES + 1)
 566 
 567 #define NS_FRSCD (NS_TST1 + NS_TST_NUM_ENTRIES + 1)
 568 #define NS_FRSCD_SIZE 12        /* 12 dwords */
 569 #define NS_FRSCD_NUM ((NS_TST_FRSCD_END + 1 - NS_FRSCD) / NS_FRSCD_SIZE)
 570 
 571 #if (NS_SMBUFSIZE == 48)
 572 #define NS_CFG_SMBUFSIZE NS_CFG_SMBUFSIZE_48
 573 #elif (NS_SMBUFSIZE == 96)
 574 #define NS_CFG_SMBUFSIZE NS_CFG_SMBUFSIZE_96
 575 #elif (NS_SMBUFSIZE == 240)
 576 #define NS_CFG_SMBUFSIZE NS_CFG_SMBUFSIZE_240
 577 #elif (NS_SMBUFSIZE == 2048)
 578 #define NS_CFG_SMBUFSIZE NS_CFG_SMBUFSIZE_2048
 579 #else
 580 #error NS_SMBUFSIZE is incorrect in nicstar.h
 581 #endif /* NS_SMBUFSIZE */
 582 
 583 #if (NS_LGBUFSIZE == 2048)
 584 #define NS_CFG_LGBUFSIZE NS_CFG_LGBUFSIZE_2048
 585 #elif (NS_LGBUFSIZE == 4096)
 586 #define NS_CFG_LGBUFSIZE NS_CFG_LGBUFSIZE_4096
 587 #elif (NS_LGBUFSIZE == 8192)
 588 #define NS_CFG_LGBUFSIZE NS_CFG_LGBUFSIZE_8192
 589 #elif (NS_LGBUFSIZE == 16384)
 590 #define NS_CFG_LGBUFSIZE NS_CFG_LGBUFSIZE_16384
 591 #else
 592 #error NS_LGBUFSIZE is incorrect in nicstar.h
 593 #endif /* NS_LGBUFSIZE */
 594 
 595 #if (NS_RSQSIZE == 2048)
 596 #define NS_CFG_RSQSIZE NS_CFG_RSQSIZE_2048
 597 #elif (NS_RSQSIZE == 4096)
 598 #define NS_CFG_RSQSIZE NS_CFG_RSQSIZE_4096
 599 #elif (NS_RSQSIZE == 8192)
 600 #define NS_CFG_RSQSIZE NS_CFG_RSQSIZE_8192
 601 #else
 602 #error NS_RSQSIZE is incorrect in nicstar.h
 603 #endif /* NS_RSQSIZE */
 604 
 605 #if (NS_VPIBITS == 0)
 606 #define NS_CFG_VPIBITS NS_CFG_VPIBITS_0
 607 #elif (NS_VPIBITS == 1)
 608 #define NS_CFG_VPIBITS NS_CFG_VPIBITS_1
 609 #elif (NS_VPIBITS == 2)
 610 #define NS_CFG_VPIBITS NS_CFG_VPIBITS_2
 611 #elif (NS_VPIBITS == 8)
 612 #define NS_CFG_VPIBITS NS_CFG_VPIBITS_8
 613 #else
 614 #error NS_VPIBITS is incorrect in nicstar.h
 615 #endif /* NS_VPIBITS */
 616 
 617 #ifdef RCQ_SUPPORT
 618 #define NS_CFG_RAWIE_OPT NS_CFG_RAWIE
 619 #else
 620 #define NS_CFG_RAWIE_OPT 0x00000000
 621 #endif /* RCQ_SUPPORT */
 622 
 623 #ifdef ENABLE_TSQFIE
 624 #define NS_CFG_TSQFIE_OPT NS_CFG_TSQFIE
 625 #else
 626 #define NS_CFG_TSQFIE_OPT 0x00000000
 627 #endif /* ENABLE_TSQFIE */
 628 
 629 /* PCI stuff */
 630 
 631 #ifndef PCI_VENDOR_ID_IDT
 632 #define PCI_VENDOR_ID_IDT 0x111D
 633 #endif /* PCI_VENDOR_ID_IDT */
 634 
 635 #ifndef PCI_DEVICE_ID_IDT_IDT77201
 636 #define PCI_DEVICE_ID_IDT_IDT77201 0x0001
 637 #endif /* PCI_DEVICE_ID_IDT_IDT77201 */
 638 
 639 /* Device driver structures */
 640 
 641 struct ns_skb_prv {
 642         u32 buf_type;           /* BUF_SM/BUF_LG/BUF_NONE */
 643         u32 dma;
 644         int iovcnt;
 645 };
 646 
 647 #define NS_PRV_BUFTYPE(skb)   \
 648         (((struct ns_skb_prv *)(ATM_SKB(skb)+1))->buf_type)
 649 #define NS_PRV_DMA(skb) \
 650         (((struct ns_skb_prv *)(ATM_SKB(skb)+1))->dma)
 651 #define NS_PRV_IOVCNT(skb) \
 652         (((struct ns_skb_prv *)(ATM_SKB(skb)+1))->iovcnt)
 653 
 654 typedef struct tsq_info {
 655         void *org;
 656         dma_addr_t dma;
 657         ns_tsi *base;
 658         ns_tsi *next;
 659         ns_tsi *last;
 660 } tsq_info;
 661 
 662 typedef struct scq_info {
 663         void *org;
 664         dma_addr_t dma;
 665         ns_scqe *base;
 666         ns_scqe *last;
 667         ns_scqe *next;
 668         volatile ns_scqe *tail; /* Not related to the nicstar register */
 669         unsigned num_entries;
 670         struct sk_buff **skb;   /* Pointer to an array of pointers
 671                                    to the sk_buffs used for tx */
 672         u32 scd;                /* SRAM address of the corresponding
 673                                    SCD */
 674         int tbd_count;          /* Only meaningful on variable rate */
 675         wait_queue_head_t scqfull_waitq;
 676         volatile char full;     /* SCQ full indicator */
 677         spinlock_t lock;        /* SCQ spinlock */
 678 } scq_info;
 679 
 680 typedef struct rsq_info {
 681         void *org;
 682         dma_addr_t dma;
 683         ns_rsqe *base;
 684         ns_rsqe *next;
 685         ns_rsqe *last;
 686 } rsq_info;
 687 
 688 typedef struct skb_pool {
 689         volatile int count;     /* number of buffers in the queue */
 690         struct sk_buff_head queue;
 691 } skb_pool;
 692 
 693 /* NOTE: for small and large buffer pools, the count is not used, as the
 694          actual value used for buffer management is the one read from the
 695          card. */
 696 
 697 typedef struct vc_map {
 698         volatile unsigned int tx:1;     /* TX vc? */
 699         volatile unsigned int rx:1;     /* RX vc? */
 700         struct atm_vcc *tx_vcc, *rx_vcc;
 701         struct sk_buff *rx_iov; /* RX iovector skb */
 702         scq_info *scq;          /* To keep track of the SCQ */
 703         u32 cbr_scd;            /* SRAM address of the corresponding
 704                                    SCD. 0x00000000 for UBR/VBR/ABR */
 705         int tbd_count;
 706 } vc_map;
 707 
 708 typedef struct ns_dev {
 709         int index;              /* Card ID to the device driver */
 710         int sram_size;          /* In k x 32bit words. 32 or 128 */
 711         void __iomem *membase;  /* Card's memory base address */
 712         unsigned long max_pcr;
 713         int rct_size;           /* Number of entries */
 714         int vpibits;
 715         int vcibits;
 716         struct pci_dev *pcidev;
 717         struct idr idr;
 718         struct atm_dev *atmdev;
 719         tsq_info tsq;
 720         rsq_info rsq;
 721         scq_info *scq0, *scq1, *scq2;   /* VBR SCQs */
 722         skb_pool sbpool;        /* Small buffers */
 723         skb_pool lbpool;        /* Large buffers */
 724         skb_pool hbpool;        /* Pre-allocated huge buffers */
 725         skb_pool iovpool;       /* iovector buffers */
 726         volatile int efbie;     /* Empty free buf. queue int. enabled */
 727         volatile u32 tst_addr;  /* SRAM address of the TST in use */
 728         volatile int tst_free_entries;
 729         vc_map vcmap[NS_MAX_RCTSIZE];
 730         vc_map *tste2vc[NS_TST_NUM_ENTRIES];
 731         vc_map *scd2vc[NS_FRSCD_NUM];
 732         buf_nr sbnr;
 733         buf_nr lbnr;
 734         buf_nr hbnr;
 735         buf_nr iovnr;
 736         int sbfqc;
 737         int lbfqc;
 738         struct sk_buff *sm_handle;
 739         u32 sm_addr;
 740         struct sk_buff *lg_handle;
 741         u32 lg_addr;
 742         struct sk_buff *rcbuf;  /* Current raw cell buffer */
 743         struct ns_rcqe *rawcell;
 744         u32 rawch;              /* Raw cell queue head */
 745         unsigned intcnt;        /* Interrupt counter */
 746         spinlock_t int_lock;    /* Interrupt lock */
 747         spinlock_t res_lock;    /* Card resource lock */
 748 } ns_dev;
 749 
 750    /* NOTE: Each tste2vc entry relates a given TST entry to the corresponding
 751       CBR vc. If the entry is not allocated, it must be NULL.
 752 
 753       There are two TSTs so the driver can modify them on the fly
 754       without stopping the transmission.
 755 
 756       scd2vc allows us to find out unused fixed rate SCDs, because
 757       they must have a NULL pointer here. */
 758 
 759 #endif /* _LINUX_NICSTAR_H_ */
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root/drivers/atm/nicstar.h

INCLUDED FROM
