include/asm-s390/qdio.h

   1 /*
   2  * linux/include/asm-s390/qdio.h
   3  *
   4  * Linux for S/390 QDIO base support, Hipersocket base support
   5  * version 2
   6  *
   7  * Copyright 2000,2002 IBM Corporation
   8  * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
   9  *
  10  */
  11 #ifndef __QDIO_H__
  12 #define __QDIO_H__
  13
  14 /* note, that most of the typedef's are from ingo. */
  15
  16 #include <linux/interrupt.h>
  17 #include <asm/cio.h>
  18 #include <asm/ccwdev.h>
  19
  20 #define QDIO_NAME "qdio "
  21
  22 #ifndef __s390x__
  23 #define QDIO_32_BIT
  24 #endif /* __s390x__ */
  25
  26 /**** CONSTANTS, that are relied on without using these symbols *****/
  27 #define QDIO_MAX_QUEUES_PER_IRQ 32 /* used in width of unsigned int */
  28 /************************ END of CONSTANTS **************************/
  29 #define QDIO_MAX_BUFFERS_PER_Q 128 /* must be a power of 2 (%x=&(x-1)*/
  30 #define QDIO_BUF_ORDER 7 /* 2**this == number of pages used for sbals in 1 q */
  31 #define QDIO_MAX_ELEMENTS_PER_BUFFER 16
  32 #define SBAL_SIZE 256
  33
  34 #define QDIO_QETH_QFMT 0
  35 #define QDIO_ZFCP_QFMT 1
  36 #define QDIO_IQDIO_QFMT 2
  37 #define QDIO_IQDIO_QFMT_ASYNCH 3
  38
  39 struct qdio_buffer_element{
  40         unsigned int flags;
  41         unsigned int length;
  42 #ifdef QDIO_32_BIT
  43         void *reserved;
  44 #endif /* QDIO_32_BIT */
  45         void *addr;
  46 } __attribute__ ((packed,aligned(16)));
  47
  48 struct qdio_buffer{
  49         volatile struct qdio_buffer_element element[16];
  50 } __attribute__ ((packed,aligned(256)));
  51
  52
  53 /* params are: ccw_device, status, qdio_error, siga_error,
  54    queue_number, first element processed, number of elements processed,
  55    int_parm */
  56 typedef void qdio_handler_t(struct ccw_device *,unsigned int,unsigned int,
  57                             unsigned int,unsigned int,int,int,unsigned long);
  58
  59
  60 #define QDIO_STATUS_INBOUND_INT 0x01
  61 #define QDIO_STATUS_OUTBOUND_INT 0x02
  62 #define QDIO_STATUS_LOOK_FOR_ERROR 0x04
  63 #define QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR 0x08
  64 #define QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR 0x10
  65 #define QDIO_STATUS_ACTIVATE_CHECK_CONDITION 0x20
  66
  67 #define QDIO_SIGA_ERROR_ACCESS_EXCEPTION 0x10
  68 #define QDIO_SIGA_ERROR_B_BIT_SET 0x20
  69
  70 /* for qdio_initialize */
  71 #define QDIO_INBOUND_0COPY_SBALS 0x01
  72 #define QDIO_OUTBOUND_0COPY_SBALS 0x02
  73 #define QDIO_USE_OUTBOUND_PCIS 0x04
  74
  75 /* for qdio_cleanup */
  76 #define QDIO_FLAG_CLEANUP_USING_CLEAR 0x01
  77 #define QDIO_FLAG_CLEANUP_USING_HALT 0x02
  78
  79 struct qdio_initialize {
  80         struct ccw_device *cdev;
  81         unsigned char q_format;
  82         unsigned char adapter_name[8];
  83         unsigned int qib_param_field_format; /*adapter dependent*/
  84         /* pointer to 128 bytes or NULL, if no param field */
  85         unsigned char *qib_param_field; /* adapter dependent */
  86         /* pointer to no_queues*128 words of data or NULL */
  87         unsigned long *input_slib_elements;
  88         unsigned long *output_slib_elements;
  89         unsigned int min_input_threshold;
  90         unsigned int max_input_threshold;
  91         unsigned int min_output_threshold;
  92         unsigned int max_output_threshold;
  93         unsigned int no_input_qs;
  94         unsigned int no_output_qs;
  95         qdio_handler_t *input_handler;
  96         qdio_handler_t *output_handler;
  97         unsigned long int_parm;
  98         unsigned long flags;
  99         void **input_sbal_addr_array; /* addr of n*128 void ptrs */
 100         void **output_sbal_addr_array; /* addr of n*128 void ptrs */
 101 };
 102
 103 extern int qdio_initialize(struct qdio_initialize *init_data);
 104 extern int qdio_allocate(struct qdio_initialize *init_data);
 105 extern int qdio_establish(struct qdio_initialize *init_data);
 106
 107 extern int qdio_activate(struct ccw_device *,int flags);
 108
 109 #define QDIO_STATE_MUST_USE_OUTB_PCI    0x00000001
 110 #define QDIO_STATE_INACTIVE             0x00000002 /* after qdio_cleanup */
 111 #define QDIO_STATE_ESTABLISHED          0x00000004 /* after qdio_initialize */
 112 #define QDIO_STATE_ACTIVE               0x00000008 /* after qdio_activate */
 113 #define QDIO_STATE_STOPPED              0x00000010 /* after queues went down */
 114 extern unsigned long qdio_get_status(int irq);
 115
 116
 117 #define QDIO_FLAG_SYNC_INPUT     0x01
 118 #define QDIO_FLAG_SYNC_OUTPUT    0x02
 119 #define QDIO_FLAG_UNDER_INTERRUPT 0x04
 120 #define QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT 0x08 /* no effect on
 121                                                      adapter interrupts */
 122 #define QDIO_FLAG_DONT_SIGA 0x10
 123 #define QDIO_FLAG_PCI_OUT   0x20
 124
 125 extern int do_QDIO(struct ccw_device*, unsigned int flags,
 126                    unsigned int queue_number,
 127                    unsigned int qidx,unsigned int count,
 128                    struct qdio_buffer *buffers);
 129
 130 extern int qdio_synchronize(struct ccw_device*, unsigned int flags,
 131                             unsigned int queue_number);
 132
 133 extern int qdio_cleanup(struct ccw_device*, int how);
 134 extern int qdio_shutdown(struct ccw_device*, int how);
 135 extern int qdio_free(struct ccw_device*);
 136
 137 unsigned char qdio_get_slsb_state(struct ccw_device*, unsigned int flag,
 138                                   unsigned int queue_number,
 139                                   unsigned int qidx);
 140
 141 extern void qdio_init_scrubber(void);
 142
 143 struct qdesfmt0 {
 144 #ifdef QDIO_32_BIT
 145         unsigned long res1;             /* reserved */
 146 #endif /* QDIO_32_BIT */
 147         unsigned long sliba;            /* storage-list-information-block
 148                                            address */
 149 #ifdef QDIO_32_BIT
 150         unsigned long res2;             /* reserved */
 151 #endif /* QDIO_32_BIT */
 152         unsigned long sla;              /* storage-list address */
 153 #ifdef QDIO_32_BIT
 154         unsigned long res3;             /* reserved */
 155 #endif /* QDIO_32_BIT */
 156         unsigned long slsba;            /* storage-list-state-block address */
 157         unsigned int  res4;             /* reserved */
 158         unsigned int  akey  :  4;       /* access key for DLIB */
 159         unsigned int  bkey  :  4;       /* access key for SL */
 160         unsigned int  ckey  :  4;       /* access key for SBALs */
 161         unsigned int  dkey  :  4;       /* access key for SLSB */
 162         unsigned int  res5  : 16;       /* reserved */
 163 } __attribute__ ((packed));
 164
 165 /*
 166  * Queue-Description record (QDR)
 167  */
 168 struct qdr {
 169         unsigned int  qfmt    :  8;     /* queue format */
 170         unsigned int  pfmt    :  8;     /* impl. dep. parameter format */
 171         unsigned int  res1    :  8;     /* reserved */
 172         unsigned int  ac      :  8;     /* adapter characteristics */
 173         unsigned int  res2    :  8;     /* reserved */
 174         unsigned int  iqdcnt  :  8;     /* input-queue-descriptor count */
 175         unsigned int  res3    :  8;     /* reserved */
 176         unsigned int  oqdcnt  :  8;     /* output-queue-descriptor count */
 177         unsigned int  res4    :  8;     /* reserved */
 178         unsigned int  iqdsz   :  8;     /* input-queue-descriptor size */
 179         unsigned int  res5    :  8;     /* reserved */
 180         unsigned int  oqdsz   :  8;     /* output-queue-descriptor size */
 181         unsigned int  res6[9];          /* reserved */
 182 #ifdef QDIO_32_BIT
 183         unsigned long res7;             /* reserved */
 184 #endif /* QDIO_32_BIT */
 185         unsigned long qiba;             /* queue-information-block address */
 186         unsigned int  res8;             /* reserved */
 187         unsigned int  qkey    :  4;     /* queue-information-block key */
 188         unsigned int  res9    : 28;     /* reserved */
 189 /*      union _qd {*/ /* why this? */
 190                 struct qdesfmt0 qdf0[126];
 191 /*      } qd;*/
 192 } __attribute__ ((packed,aligned(4096)));
 193
 194
 195 /*
 196  * queue information block (QIB)
 197  */
 198 #define QIB_AC_INBOUND_PCI_SUPPORTED    0x80
 199 #define QIB_AC_OUTBOUND_PCI_SUPPORTED   0x40
 200 #define QIB_RFLAGS_ENABLE_QEBSM         0x80
 201
 202 struct qib {
 203         unsigned int  qfmt    :  8;     /* queue format */
 204         unsigned int  pfmt    :  8;     /* impl. dep. parameter format */
 205         unsigned int  rflags  :  8;     /* QEBSM */
 206         unsigned int  ac      :  8;     /* adapter characteristics */
 207         unsigned int  res2;             /* reserved */
 208 #ifdef QDIO_32_BIT
 209         unsigned long res3;             /* reserved */
 210 #endif /* QDIO_32_BIT */
 211         unsigned long isliba;           /* absolute address of 1st
 212                                            input SLIB */
 213 #ifdef QDIO_32_BIT
 214         unsigned long res4;             /* reserved */
 215 #endif /* QDIO_32_BIT */
 216         unsigned long osliba;           /* absolute address of 1st
 217                                            output SLIB */
 218         unsigned int  res5;             /* reserved */
 219         unsigned int  res6;             /* reserved */
 220         unsigned char ebcnam[8];        /* adapter identifier in EBCDIC */
 221         unsigned char res7[88];         /* reserved */
 222         unsigned char parm[QDIO_MAX_BUFFERS_PER_Q];
 223                                         /* implementation dependent
 224                                            parameters */
 225 } __attribute__ ((packed,aligned(256)));
 226
 227
 228 /*
 229  * storage-list-information block element (SLIBE)
 230  */
 231 struct slibe {
 232 #ifdef QDIO_32_BIT
 233         unsigned long res;              /* reserved */
 234 #endif /* QDIO_32_BIT */
 235         unsigned long parms;            /* implementation dependent
 236                                            parameters */
 237 };
 238
 239 /*
 240  * storage-list-information block (SLIB)
 241  */
 242 struct slib {
 243 #ifdef QDIO_32_BIT
 244         unsigned long res1;             /* reserved */
 245 #endif /* QDIO_32_BIT */
 246         unsigned long nsliba;           /* next SLIB address (if any) */
 247 #ifdef QDIO_32_BIT
 248         unsigned long res2;             /* reserved */
 249 #endif /* QDIO_32_BIT */
 250         unsigned long sla;              /* SL address */
 251 #ifdef QDIO_32_BIT
 252         unsigned long res3;             /* reserved */
 253 #endif /* QDIO_32_BIT */
 254         unsigned long slsba;            /* SLSB address */
 255         unsigned char res4[1000];       /* reserved */
 256         struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q];    /* SLIB elements */
 257 } __attribute__ ((packed,aligned(2048)));
 258
 259 struct sbal_flags {
 260         unsigned char res1  : 1;   /* reserved */
 261         unsigned char last  : 1;   /* last entry */
 262         unsigned char cont  : 1;   /* contiguous storage */
 263         unsigned char res2  : 1;   /* reserved */
 264         unsigned char frag  : 2;   /* fragmentation (s.below) */
 265         unsigned char res3  : 2;   /* reserved */
 266 } __attribute__ ((packed));
 267
 268 #define SBAL_FLAGS_FIRST_FRAG        0x04000000UL
 269 #define SBAL_FLAGS_MIDDLE_FRAG       0x08000000UL
 270 #define SBAL_FLAGS_LAST_FRAG         0x0c000000UL
 271 #define SBAL_FLAGS_LAST_ENTRY        0x40000000UL
 272 #define SBAL_FLAGS_CONTIGUOUS        0x20000000UL
 273
 274 #define SBAL_FLAGS0_DATA_CONTINUATION 0x20UL
 275
 276 /* Awesome OpenFCP extensions */
 277 #define SBAL_FLAGS0_TYPE_STATUS       0x00UL
 278 #define SBAL_FLAGS0_TYPE_WRITE        0x08UL
 279 #define SBAL_FLAGS0_TYPE_READ         0x10UL
 280 #define SBAL_FLAGS0_TYPE_WRITE_READ   0x18UL
 281 #define SBAL_FLAGS0_MORE_SBALS        0x04UL
 282 #define SBAL_FLAGS0_COMMAND           0x02UL
 283 #define SBAL_FLAGS0_LAST_SBAL         0x00UL
 284 #define SBAL_FLAGS0_ONLY_SBAL         SBAL_FLAGS0_COMMAND
 285 #define SBAL_FLAGS0_MIDDLE_SBAL       SBAL_FLAGS0_MORE_SBALS
 286 #define SBAL_FLAGS0_FIRST_SBAL        SBAL_FLAGS0_MORE_SBALS | SBAL_FLAGS0_COMMAND
 287 /* Naught of interest beyond this point */
 288
 289 #define SBAL_FLAGS0_PCI         0x40
 290 struct sbal_sbalf_0 {
 291         unsigned char res1  : 1;   /* reserved */
 292         unsigned char pci   : 1;   /* PCI indicator */
 293         unsigned char cont  : 1;   /* data continuation */
 294         unsigned char sbtype: 2;   /* storage-block type (OpenFCP) */
 295         unsigned char res2  : 3;   /* reserved */
 296 } __attribute__ ((packed));
 297
 298 struct sbal_sbalf_1 {
 299         unsigned char res1  : 4;   /* reserved */
 300         unsigned char key   : 4;   /* storage key */
 301 } __attribute__ ((packed));
 302
 303 struct sbal_sbalf_14 {
 304         unsigned char res1   : 4;  /* reserved */
 305         unsigned char erridx : 4;  /* error index */
 306 } __attribute__ ((packed));
 307
 308 struct sbal_sbalf_15 {
 309         unsigned char reason;      /* reserved */
 310 } __attribute__ ((packed));
 311
 312 union sbal_sbalf {
 313         struct sbal_sbalf_0  i0;
 314         struct sbal_sbalf_1  i1;
 315         struct sbal_sbalf_14 i14;
 316         struct sbal_sbalf_15 i15;
 317         unsigned char value;
 318 };
 319
 320 struct sbal_element {
 321         union {
 322                 struct sbal_flags  bits;       /* flags */
 323                 unsigned char value;
 324         } flags;
 325         unsigned int  res1  : 16;   /* reserved */
 326         union sbal_sbalf  sbalf;       /* SBAL flags */
 327         unsigned int  res2  : 16;  /* reserved */
 328         unsigned int  count : 16;  /* data count */
 329 #ifdef QDIO_32_BIT
 330         unsigned long res3;        /* reserved */
 331 #endif /* QDIO_32_BIT */
 332         unsigned long addr;        /* absolute data address */
 333 } __attribute__ ((packed,aligned(16)));
 334
 335 /*
 336  * strorage-block access-list (SBAL)
 337  */
 338 struct sbal {
 339         struct sbal_element element[QDIO_MAX_ELEMENTS_PER_BUFFER];
 340 } __attribute__ ((packed,aligned(256)));
 341
 342 /*
 343  * storage-list (SL)
 344  */
 345 struct sl_element {
 346 #ifdef QDIO_32_BIT
 347         unsigned long res;     /* reserved */
 348 #endif /* QDIO_32_BIT */
 349         unsigned long sbal;    /* absolute SBAL address */
 350 } __attribute__ ((packed));
 351
 352 struct sl {
 353         struct sl_element element[QDIO_MAX_BUFFERS_PER_Q];
 354 } __attribute__ ((packed,aligned(1024)));
 355
 356 /*
 357  * storage-list-state block (SLSB)
 358  */
 359 struct slsb_flags {
 360         unsigned char owner  : 2;   /* SBAL owner */
 361         unsigned char type   : 1;   /* buffer type */
 362         unsigned char state  : 5;   /* processing state */
 363 } __attribute__ ((packed));
 364
 365
 366 struct slsb {
 367         union {
 368                 unsigned char val[QDIO_MAX_BUFFERS_PER_Q];
 369                 struct slsb_flags flags[QDIO_MAX_BUFFERS_PER_Q];
 370         } acc;
 371 } __attribute__ ((packed,aligned(256)));
 372
 373 /*
 374  * SLSB values
 375  */
 376 #define SLSB_OWNER_PROG              1
 377 #define SLSB_OWNER_CU                2
 378
 379 #define SLSB_TYPE_INPUT              0
 380 #define SLSB_TYPE_OUTPUT             1
 381
 382 #define SLSB_STATE_NOT_INIT          0
 383 #define SLSB_STATE_EMPTY             1
 384 #define SLSB_STATE_PRIMED            2
 385 #define SLSB_STATE_HALTED          0xe
 386 #define SLSB_STATE_ERROR           0xf
 387
 388 #define SLSB_P_INPUT_NOT_INIT     0x80
 389 #define SLSB_P_INPUT_PROCESSING   0x81
 390 #define SLSB_CU_INPUT_EMPTY       0x41
 391 #define SLSB_P_INPUT_PRIMED       0x82
 392 #define SLSB_P_INPUT_HALTED       0x8E
 393 #define SLSB_P_INPUT_ERROR        0x8F
 394
 395 #define SLSB_P_OUTPUT_NOT_INIT    0xA0
 396 #define SLSB_P_OUTPUT_EMPTY       0xA1
 397 #define SLSB_CU_OUTPUT_PRIMED     0x62
 398 #define SLSB_P_OUTPUT_HALTED      0xAE
 399 #define SLSB_P_OUTPUT_ERROR       0xAF
 400
 401 #define SLSB_ERROR_DURING_LOOKUP  0xFF
 402
 403 #endif /* __QDIO_H__ */