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   1 /*
   2  * csr1212.h -- IEEE 1212 Control and Status Register support for Linux
   3  *
   4  * Copyright (C) 2003 Francois Retief <fgretief@sun.ac.za>
   5  *                    Steve Kinneberg <kinnebergsteve@acmsystems.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions are met:
   9  *
  10  *    1. Redistributions of source code must retain the above copyright notice,
  11  *       this list of conditions and the following disclaimer.
  12  *    2. Redistributions in binary form must reproduce the above copyright
  13  *       notice, this list of conditions and the following disclaimer in the
  14  *       documentation and/or other materials provided with the distribution.
  15  *    3. The name of the author may not be used to endorse or promote products
  16  *       derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  19  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  20  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
  21  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  24  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  25  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  26  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  27  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #ifndef __CSR1212_H__
  31 #define __CSR1212_H__
  32
  33
  34 /* Compatibility layer */
  35 #ifdef __KERNEL__
  36
  37 #include <linux/types.h>
  38 #include <linux/slab.h>
  39 #include <linux/interrupt.h>
  40 #include <linux/vmalloc.h>
  41 #include <asm/pgalloc.h>
  42
  43 #define CSR1212_MALLOC(size)            vmalloc((size))
  44 #define CSR1212_FREE(ptr)               vfree(ptr)
  45 #define CSR1212_BE16_TO_CPU(quad)       be16_to_cpu(quad)
  46 #define CSR1212_CPU_TO_BE16(quad)       cpu_to_be16(quad)
  47 #define CSR1212_BE32_TO_CPU(quad)       be32_to_cpu(quad)
  48 #define CSR1212_CPU_TO_BE32(quad)       cpu_to_be32(quad)
  49 #define CSR1212_BE64_TO_CPU(quad)       be64_to_cpu(quad)
  50 #define CSR1212_CPU_TO_BE64(quad)       cpu_to_be64(quad)
  51
  52 #define CSR1212_LE16_TO_CPU(quad)       le16_to_cpu(quad)
  53 #define CSR1212_CPU_TO_LE16(quad)       cpu_to_le16(quad)
  54 #define CSR1212_LE32_TO_CPU(quad)       le32_to_cpu(quad)
  55 #define CSR1212_CPU_TO_LE32(quad)       cpu_to_le32(quad)
  56 #define CSR1212_LE64_TO_CPU(quad)       le64_to_cpu(quad)
  57 #define CSR1212_CPU_TO_LE64(quad)       cpu_to_le64(quad)
  58
  59 #include <linux/errno.h>
  60 #define CSR1212_SUCCESS (0)
  61 #define CSR1212_EINVAL  (-EINVAL)
  62 #define CSR1212_ENOMEM  (-ENOMEM)
  63 #define CSR1212_ENOENT  (-ENOENT)
  64 #define CSR1212_EIO     (-EIO)
  65 #define CSR1212_EBUSY   (-EBUSY)
  66
  67 #else   /* Userspace */
  68
  69 #include <sys/types.h>
  70 #include <malloc.h>
  71 #define CSR1212_MALLOC(size)            malloc(size)
  72 #define CSR1212_FREE(ptr)               free(ptr)
  73 #include <endian.h>
  74 #if __BYTE_ORDER == __LITTLE_ENDIAN
  75 #include <byteswap.h>
  76 #define CSR1212_BE16_TO_CPU(quad)       bswap_16(quad)
  77 #define CSR1212_CPU_TO_BE16(quad)       bswap_16(quad)
  78 #define CSR1212_BE32_TO_CPU(quad)       bswap_32(quad)
  79 #define CSR1212_CPU_TO_BE32(quad)       bswap_32(quad)
  80 #define CSR1212_BE64_TO_CPU(quad)       bswap_64(quad)
  81 #define CSR1212_CPU_TO_BE64(quad)       bswap_64(quad)
  82
  83 #define CSR1212_LE16_TO_CPU(quad)       (quad)
  84 #define CSR1212_CPU_TO_LE16(quad)       (quad)
  85 #define CSR1212_LE32_TO_CPU(quad)       (quad)
  86 #define CSR1212_CPU_TO_LE32(quad)       (quad)
  87 #define CSR1212_LE64_TO_CPU(quad)       (quad)
  88 #define CSR1212_CPU_TO_LE64(quad)       (quad)
  89 #else
  90 #define CSR1212_BE16_TO_CPU(quad)       (quad)
  91 #define CSR1212_CPU_TO_BE16(quad)       (quad)
  92 #define CSR1212_BE32_TO_CPU(quad)       (quad)
  93 #define CSR1212_CPU_TO_BE32(quad)       (quad)
  94 #define CSR1212_BE64_TO_CPU(quad)       (quad)
  95 #define CSR1212_CPU_TO_BE64(quad)       (quad)
  96
  97 #define CSR1212_LE16_TO_CPU(quad)       bswap_16(quad)
  98 #define CSR1212_CPU_TO_LE16(quad)       bswap_16(quad)
  99 #define CSR1212_LE32_TO_CPU(quad)       bswap_32(quad)
 100 #define CSR1212_CPU_TO_LE32(quad)       bswap_32(quad)
 101 #define CSR1212_LE64_TO_CPU(quad)       bswap_64(quad)
 102 #define CSR1212_CPU_TO_LE64(quad)       bswap_64(quad)
 103 #endif
 104
 105 #include <errno.h>
 106 #define CSR1212_SUCCESS (0)
 107 #define CSR1212_EINVAL  (EINVAL)
 108 #define CSR1212_ENOMEM  (ENOMEM)
 109 #define CSR1212_ENOENT  (ENOENT)
 110 #define CSR1212_EIO     (EIO)
 111 #define CSR1212_EBUSY   (EBUSY)
 112
 113 #endif
 114
 115
 116 #define CSR1212_KV_VAL_MASK                     0xffffff
 117 #define CSR1212_KV_KEY_SHIFT                    24
 118 #define CSR1212_KV_KEY_TYPE_SHIFT               6
 119 #define CSR1212_KV_KEY_ID_MASK                  0x3f
 120 #define CSR1212_KV_KEY_TYPE_MASK                0x3             /* After shift */
 121
 122
 123 /* CSR 1212 key types */
 124 #define CSR1212_KV_TYPE_IMMEDIATE               0
 125 #define CSR1212_KV_TYPE_CSR_OFFSET              1
 126 #define CSR1212_KV_TYPE_LEAF                    2
 127 #define CSR1212_KV_TYPE_DIRECTORY               3
 128
 129
 130 /* CSR 1212 key ids */
 131 #define CSR1212_KV_ID_DESCRIPTOR                0x01
 132 #define CSR1212_KV_ID_BUS_DEPENDENT_INFO        0x02
 133 #define CSR1212_KV_ID_VENDOR                    0x03
 134 #define CSR1212_KV_ID_HARDWARE_VERSION          0x04
 135 #define CSR1212_KV_ID_MODULE                    0x07
 136 #define CSR1212_KV_ID_NODE_CAPABILITIES         0x0C
 137 #define CSR1212_KV_ID_EUI_64                    0x0D
 138 #define CSR1212_KV_ID_UNIT                      0x11
 139 #define CSR1212_KV_ID_SPECIFIER_ID              0x12
 140 #define CSR1212_KV_ID_VERSION                   0x13
 141 #define CSR1212_KV_ID_DEPENDENT_INFO            0x14
 142 #define CSR1212_KV_ID_UNIT_LOCATION             0x15
 143 #define CSR1212_KV_ID_MODEL                     0x17
 144 #define CSR1212_KV_ID_INSTANCE                  0x18
 145 #define CSR1212_KV_ID_KEYWORD                   0x19
 146 #define CSR1212_KV_ID_FEATURE                   0x1A
 147 #define CSR1212_KV_ID_EXTENDED_ROM              0x1B
 148 #define CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID 0x1C
 149 #define CSR1212_KV_ID_EXTENDED_KEY              0x1D
 150 #define CSR1212_KV_ID_EXTENDED_DATA             0x1E
 151 #define CSR1212_KV_ID_MODIFIABLE_DESCRIPTOR     0x1F
 152 #define CSR1212_KV_ID_DIRECTORY_ID              0x20
 153 #define CSR1212_KV_ID_REVISION                  0x21
 154
 155
 156 /* IEEE 1212 Address space map */
 157 #define CSR1212_ALL_SPACE_BASE                  (0x000000000000ULL)
 158 #define CSR1212_ALL_SPACE_SIZE                  (1ULL << 48)
 159 #define CSR1212_ALL_SPACE_END                   (CSR1212_ALL_SPACE_BASE + CSR1212_ALL_SPACE_SIZE)
 160
 161 #define  CSR1212_MEMORY_SPACE_BASE              (0x000000000000ULL)
 162 #define  CSR1212_MEMORY_SPACE_SIZE              ((256ULL * (1ULL << 40)) - (512ULL * (1ULL << 20)))
 163 #define  CSR1212_MEMORY_SPACE_END               (CSR1212_MEMORY_SPACE_BASE + CSR1212_MEMORY_SPACE_SIZE)
 164
 165 #define  CSR1212_PRIVATE_SPACE_BASE             (0xffffe0000000ULL)
 166 #define  CSR1212_PRIVATE_SPACE_SIZE             (256ULL * (1ULL << 20))
 167 #define  CSR1212_PRIVATE_SPACE_END              (CSR1212_PRIVATE_SPACE_BASE + CSR1212_PRIVATE_SPACE_SIZE)
 168
 169 #define  CSR1212_REGISTER_SPACE_BASE            (0xfffff0000000ULL)
 170 #define  CSR1212_REGISTER_SPACE_SIZE            (256ULL * (1ULL << 20))
 171 #define  CSR1212_REGISTER_SPACE_END             (CSR1212_REGISTER_SPACE_BASE + CSR1212_REGISTER_SPACE_SIZE)
 172
 173 #define  CSR1212_CSR_ARCH_REG_SPACE_BASE        (0xfffff0000000ULL)
 174 #define  CSR1212_CSR_ARCH_REG_SPACE_SIZE        (512)
 175 #define  CSR1212_CSR_ARCH_REG_SPACE_END         (CSR1212_CSR_ARCH_REG_SPACE_BASE + CSR1212_CSR_ARCH_REG_SPACE_SIZE)
 176 #define  CSR1212_CSR_ARCH_REG_SPACE_OFFSET      (CSR1212_CSR_ARCH_REG_SPACE_BASE - CSR1212_REGISTER_SPACE_BASE)
 177
 178 #define  CSR1212_CSR_BUS_DEP_REG_SPACE_BASE     (0xfffff0000200ULL)
 179 #define  CSR1212_CSR_BUS_DEP_REG_SPACE_SIZE     (512)
 180 #define  CSR1212_CSR_BUS_DEP_REG_SPACE_END      (CSR1212_CSR_BUS_DEP_REG_SPACE_BASE + CSR1212_CSR_BUS_DEP_REG_SPACE_SIZE)
 181 #define  CSR1212_CSR_BUS_DEP_REG_SPACE_OFFSET   (CSR1212_CSR_BUS_DEP_REG_SPACE_BASE - CSR1212_REGISTER_SPACE_BASE)
 182
 183 #define  CSR1212_CONFIG_ROM_SPACE_BASE          (0xfffff0000400ULL)
 184 #define  CSR1212_CONFIG_ROM_SPACE_SIZE          (1024)
 185 #define  CSR1212_CONFIG_ROM_SPACE_END           (CSR1212_CONFIG_ROM_SPACE_BASE + CSR1212_CONFIG_ROM_SPACE_SIZE)
 186 #define  CSR1212_CONFIG_ROM_SPACE_OFFSET        (CSR1212_CONFIG_ROM_SPACE_BASE - CSR1212_REGISTER_SPACE_BASE)
 187
 188 #define  CSR1212_UNITS_SPACE_BASE               (0xfffff0000800ULL)
 189 #define  CSR1212_UNITS_SPACE_SIZE               ((256ULL * (1ULL << 20)) - 2048)
 190 #define  CSR1212_UNITS_SPACE_END                (CSR1212_UNITS_SPACE_BASE + CSR1212_UNITS_SPACE_SIZE)
 191 #define  CSR1212_UNITS_SPACE_OFFSET             (CSR1212_UNITS_SPACE_BASE - CSR1212_REGISTER_SPACE_BASE)
 192
 193 #define  CSR1212_EXTENDED_ROM_SIZE              (0x10000 * sizeof(u_int32_t))
 194
 195
 196 /* Config ROM image structures */
 197 struct csr1212_bus_info_block_img {
 198         u_int8_t length;
 199         u_int8_t crc_length;
 200         u_int16_t crc;
 201
 202         /* Must be last */
 203         u_int32_t data[0];      /* older gcc can't handle [] which is standard */
 204 };
 205
 206 #define CSR1212_KV_KEY(quad)            (CSR1212_BE32_TO_CPU(quad) >> CSR1212_KV_KEY_SHIFT)
 207 #define CSR1212_KV_KEY_TYPE(quad)       (CSR1212_KV_KEY(quad) >> CSR1212_KV_KEY_TYPE_SHIFT)
 208 #define CSR1212_KV_KEY_ID(quad)         (CSR1212_KV_KEY(quad) & CSR1212_KV_KEY_ID_MASK)
 209 #define CSR1212_KV_VAL(quad)            (CSR1212_BE32_TO_CPU(quad) & CSR1212_KV_VAL_MASK)
 210
 211 #define CSR1212_SET_KV_KEY(quad, key)   ((quad) = \
 212         CSR1212_CPU_TO_BE32(CSR1212_KV_VAL(quad) | ((key) << CSR1212_KV_KEY_SHIFT)))
 213 #define CSR1212_SET_KV_VAL(quad, val)   ((quad) = \
 214         CSR1212_CPU_TO_BE32((CSR1212_KV_KEY(quad) << CSR1212_KV_KEY_SHIFT) | (val)))
 215 #define CSR1212_SET_KV_TYPEID(quad, type, id)   ((quad) = \
 216         CSR1212_CPU_TO_BE32(CSR1212_KV_VAL(quad) | \
 217         (((((type) & CSR1212_KV_KEY_TYPE_MASK) << CSR1212_KV_KEY_TYPE_SHIFT) | \
 218           ((id) & CSR1212_KV_KEY_ID_MASK)) << CSR1212_KV_KEY_SHIFT)))
 219
 220 typedef u_int32_t csr1212_quad_t;
 221
 222
 223 struct csr1212_keyval_img {
 224         u_int16_t length;
 225         u_int16_t crc;
 226
 227         /* Must be last */
 228         csr1212_quad_t data[0]; /* older gcc can't handle [] which is standard */
 229 };
 230
 231 struct csr1212_leaf {
 232         int len;
 233         u_int32_t *data;
 234 };
 235
 236 struct csr1212_dentry {
 237         struct csr1212_dentry *next, *prev;
 238         struct csr1212_keyval *kv;
 239 };
 240
 241 struct csr1212_directory {
 242         int len;
 243         struct csr1212_dentry *dentries_head, *dentries_tail;
 244 };
 245
 246 struct csr1212_keyval {
 247         struct {
 248                 u_int8_t type;
 249                 u_int8_t id;
 250         } key;
 251         union {
 252                 u_int32_t immediate;
 253                 u_int32_t csr_offset;
 254                 struct csr1212_leaf leaf;
 255                 struct csr1212_directory directory;
 256         } value;
 257         struct csr1212_keyval *associate;
 258         int refcnt;
 259
 260         /* used in generating and/or parsing CSR image */
 261         struct csr1212_keyval *next, *prev;     /* flat list of CSR elements */
 262         u_int32_t offset;       /* position in CSR from 0xffff f000 0000 */
 263         u_int8_t valid;         /* flag indicating keyval has valid data*/
 264 };
 265
 266
 267 struct csr1212_cache_region {
 268         struct csr1212_cache_region *next, *prev;
 269         u_int32_t offset_start;         /* inclusive */
 270         u_int32_t offset_end;           /* exclusive */
 271 };
 272
 273 struct csr1212_csr_rom_cache {
 274         struct csr1212_csr_rom_cache *next, *prev;
 275         struct csr1212_cache_region *filled_head, *filled_tail;
 276         struct csr1212_keyval *layout_head, *layout_tail;
 277         size_t size;
 278         u_int32_t offset;
 279         struct csr1212_keyval *ext_rom;
 280         size_t len;
 281
 282         /* Must be last */
 283         u_int32_t data[0];      /* older gcc can't handle [] which is standard */
 284 };
 285
 286 struct csr1212_csr {
 287         size_t bus_info_len;    /* bus info block length in bytes */
 288         size_t crc_len;         /* crc length in bytes */
 289         u_int32_t *bus_info_data;       /* bus info data incl bus name and EUI */
 290
 291         void *private;          /* private, bus specific data */
 292         struct csr1212_bus_ops *ops;
 293
 294         struct csr1212_keyval *root_kv;
 295
 296         int max_rom;            /* max bytes readable in Config ROM region */
 297
 298         /* Items below used for image parsing and generation */
 299         struct csr1212_csr_rom_cache *cache_head, *cache_tail;
 300 };
 301
 302 struct csr1212_bus_ops {
 303         /* This function is used by csr1212 to read additional information
 304          * from remote nodes when parsing a Config ROM (i.e., read Config ROM
 305          * entries located in the Units Space.  Must return 0 on success
 306          * anything else indicates an error. */
 307         int (*bus_read) (struct csr1212_csr *csr, u_int64_t addr,
 308                          u_int16_t length, void *buffer, void *private);
 309
 310         /* This function is used by csr1212 to allocate a region in units space
 311          * in the event that Config ROM entries don't all fit in the predefined
 312          * 1K region.  The void *private parameter is private member of struct
 313          * csr1212_csr. */
 314         u_int64_t (*allocate_addr_range) (u_int64_t size, u_int32_t alignment,
 315                                           void *private);
 316
 317
 318         /* This function is used by csr1212 to release a region in units space
 319          * that is no longer needed. */
 320         void (*release_addr) (u_int64_t addr, void *private);
 321
 322         /* This function is used by csr1212 to determine the max read request
 323          * supported by a remote node when reading the ConfigROM space.  Must
 324          * return 0, 1, or 2 per IEEE 1212.  */
 325         int (*get_max_rom) (u_int32_t *bus_info, void *private);
 326 };
 327
 328
 329
 330
 331 /* Descriptor Leaf manipulation macros */
 332 #define CSR1212_DESCRIPTOR_LEAF_TYPE_SHIFT 24
 333 #define CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID_MASK 0xffffff
 334 #define CSR1212_DESCRIPTOR_LEAF_OVERHEAD (1 * sizeof(u_int32_t))
 335
 336 #define CSR1212_DESCRIPTOR_LEAF_TYPE(kv) \
 337         (CSR1212_BE32_TO_CPU((kv)->value.leaf.data[0]) >> CSR1212_DESCRIPTOR_LEAF_TYPE_SHIFT)
 338 #define CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID(kv) \
 339         (CSR1212_BE32_TO_CPU((kv)->value.leaf.data[0]) & \
 340          CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID_MASK)
 341 #define CSR1212_DESCRIPTOR_LEAF_DATA(kv) \
 342         (&((kv)->value.leaf.data[1]))
 343
 344 #define CSR1212_DESCRIPTOR_LEAF_SET_TYPE(kv, type) \
 345         ((kv)->value.leaf.data[0] = \
 346          CSR1212_CPU_TO_BE32(CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID(kv) | \
 347                              ((type) << CSR1212_DESCRIPTOR_LEAF_TYPE_SHIFT)))
 348 #define CSR1212_DESCRIPTOR_LEAF_SET_SPECIFIER_ID(kv, spec_id) \
 349         ((kv)->value.leaf.data[0] = \
 350          CSR1212_CPU_TO_BE32((CSR1212_DESCRIPTOR_LEAF_TYPE(kv) << \
 351                               CSR1212_DESCRIPTOR_LEAF_TYPE_SHIFT) | \
 352                              ((spec_id) & CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID_MASK)))
 353
 354 /* Text Descriptor Leaf manipulation macros */
 355 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_SHIFT 28
 356 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_MASK 0xf /* after shift */
 357 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_SHIFT 16
 358 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_MASK 0xfff  /* after shift */
 359 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE_MASK 0xffff
 360 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_OVERHEAD (1 * sizeof(u_int32_t))
 361
 362 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH(kv) \
 363         (CSR1212_BE32_TO_CPU((kv)->value.leaf.data[1]) >> \
 364          CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_SHIFT)
 365 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET(kv) \
 366         ((CSR1212_BE32_TO_CPU((kv)->value.leaf.data[1]) >> \
 367                              CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_SHIFT) & \
 368                             CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_MASK)
 369 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE(kv) \
 370         (CSR1212_BE32_TO_CPU((kv)->value.leaf.data[1]) & \
 371          CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE_MASK)
 372 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_DATA(kv) \
 373         (&((kv)->value.leaf.data[2]))
 374
 375 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_SET_WIDTH(kv, width) \
 376         ((kv)->value.leaf.data[1] = \
 377          ((kv)->value.leaf.data[1] & \
 378           CSR1212_CPU_TO_BE32(~(CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_MASK << \
 379                                 CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_SHIFT))) | \
 380          CSR1212_CPU_TO_BE32(((width) & \
 381                               CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_MASK) << \
 382                              CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_SHIFT))
 383 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_SET_CHAR_SET(kv, char_set) \
 384         ((kv)->value.leaf.data[1] = \
 385          ((kv)->value.leaf.data[1] & \
 386           CSR1212_CPU_TO_BE32(~(CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_MASK << \
 387                                 CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_SHIFT))) | \
 388          CSR1212_CPU_TO_BE32(((char_set) & \
 389                               CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_MASK) << \
 390                              CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_SHIFT))
 391 #define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_SET_LANGUAGE(kv, language) \
 392         ((kv)->value.leaf.data[1] = \
 393          ((kv)->value.leaf.data[1] & \
 394           CSR1212_CPU_TO_BE32(~(CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE_MASK))) | \
 395          CSR1212_CPU_TO_BE32(((language) & \
 396                               CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE_MASK)))
 397
 398
 399 /* Icon Descriptor Leaf manipulation macros */
 400 #define CSR1212_ICON_DESCRIPTOR_LEAF_VERSION_MASK 0xffffff
 401 #define CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_SHIFT 30
 402 #define CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_MASK 0x3 /* after shift */
 403 #define CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_SHIFT 16
 404 #define CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_MASK 0xf /* after shift */
 405 #define CSR1212_ICON_DESCRIPTOR_LEAF_LANGUAGE_MASK 0xffff
 406 #define CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_SHIFT 16
 407 #define CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_MASK 0xffff /* after shift */
 408 #define CSR1212_ICON_DESCRIPTOR_LEAF_VSCAN_MASK 0xffff
 409 #define CSR1212_ICON_DESCRIPTOR_LEAF_OVERHEAD (3 * sizeof(u_int32_t))
 410
 411 #define CSR1212_ICON_DESCRIPTOR_LEAF_VERSION(kv) \
 412         (CSR1212_BE32_TO_CPU((kv)->value.leaf.data[2]) & \
 413          CSR1212_ICON_DESCRIPTOR_LEAF_VERSION_MASK)
 414
 415 #define CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH(kv) \
 416         (CSR1212_BE32_TO_CPU((kv)->value.leaf.data[3]) >> \
 417          CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_SHIFT)
 418
 419 #define CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE(kv) \
 420         ((CSR1212_BE32_TO_CPU((kv)->value.leaf.data[3]) >> \
 421           CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_SHIFT) & \
 422          CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_MASK)
 423
 424 #define CSR1212_ICON_DESCRIPTOR_LEAF_LANGUAGE(kv) \
 425         (CSR1212_BE32_TO_CPU((kv)->value.leaf.data[3]) & \
 426          CSR1212_ICON_DESCRIPTOR_LEAF_LANGUAGE_MASK)
 427
 428 #define CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN(kv) \
 429         ((CSR1212_BE32_TO_CPU((kv)->value.leaf.data[4]) >> \
 430           CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_HSCAN_SHIFT) & \
 431          CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_HSCAN_MASK)
 432
 433 #define CSR1212_ICON_DESCRIPTOR_LEAF_VSCAN(kv) \
 434         (CSR1212_BE32_TO_CPU((kv)->value.leaf.data[4]) & \
 435          CSR1212_ICON_DESCRIPTOR_LEAF_VSCAN_MASK)
 436
 437 #define CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE(kv) \
 438         (&((kv)->value.leaf.data[5]))
 439
 440 static inline u_int32_t *CSR1212_ICON_DESCRIPTOR_LEAF_PIXELS(struct csr1212_keyval *kv)
 441 {
 442         static const int pd[4] = { 0, 4, 16, 256 };
 443         static const int cs[16] = { 4, 2 };
 444         int ps = pd[CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH(kv)];
 445
 446         return &kv->value.leaf.data[5 +
 447                                     (ps * cs[CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE(kv)]) /
 448                            sizeof(u_int32_t)];
 449 }
 450
 451 #define CSR1212_ICON_DESCRIPTOR_LEAF_SET_VERSION(kv, version) \
 452         ((kv)->value.leaf.data[2] = \
 453          ((kv)->value.leaf.data[2] & \
 454           CSR1212_CPU_TO_BE32(~(CSR1212_ICON_DESCRIPTOR_LEAF_VERSION_MASK))) | \
 455          CSR1212_CPU_TO_BE32(((version) & \
 456                               CSR1212_ICON_DESCRIPTOR_LEAF_VERSION_MASK)))
 457
 458 #define CSR1212_ICON_DESCRIPTOR_LEAF_SET_PALETTE_DEPTH(kv, palette_depth) \
 459         ((kv)->value.leaf.data[3] = \
 460          ((kv)->value.leaf.data[3] & \
 461           CSR1212_CPU_TO_BE32(~(CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_MASK << \
 462                                 CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_SHIFT))) | \
 463          CSR1212_CPU_TO_BE32(((palette_depth) & \
 464                               CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_MASK) << \
 465                              CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_SHIFT))
 466
 467 #define CSR1212_ICON_DESCRIPTOR_LEAF_SET_COLOR_SPACE(kv, color_space) \
 468         ((kv)->value.leaf.data[3] = \
 469          ((kv)->value.leaf.data[3] & \
 470           CSR1212_CPU_TO_BE32(~(CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_MASK << \
 471                                 CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_SHIFT))) | \
 472          CSR1212_CPU_TO_BE32(((color_space) & \
 473                               CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_MASK) << \
 474                              CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_SHIFT))
 475
 476 #define CSR1212_ICON_DESCRIPTOR_LEAF_SET_LANGUAGE(kv, language) \
 477         ((kv)->value.leaf.data[3] = \
 478          ((kv)->value.leaf.data[3] & \
 479           CSR1212_CPU_TO_BE32(~(CSR1212_ICON_DESCRIPTOR_LEAF_LANGUAGE_MASK))) | \
 480          CSR1212_CPU_TO_BE32(((language) & \
 481                               CSR1212_ICON_DESCRIPTOR_LEAF_LANGUAGE_MASK)))
 482
 483 #define CSR1212_ICON_DESCRIPTOR_LEAF_SET_HSCAN(kv, hscan) \
 484         ((kv)->value.leaf.data[4] = \
 485          ((kv)->value.leaf.data[4] & \
 486           CSR1212_CPU_TO_BE32(~(CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_MASK << \
 487                                 CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_SHIFT))) | \
 488          CSR1212_CPU_TO_BE32(((hscan) & \
 489                               CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_MASK) << \
 490                              CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_SHIFT))
 491
 492 #define CSR1212_ICON_DESCRIPTOR_LEAF_SET_VSCAN(kv, vscan) \
 493         ((kv)->value.leaf.data[4] = \
 494          (((kv)->value.leaf.data[4] & \
 495           CSR1212_CPU_TO_BE32(~CSR1212_ICON_DESCRIPTOR_LEAF_VSCAN_MASK))) | \
 496          CSR1212_CPU_TO_BE32(((vscan) & \
 497                               CSR1212_ICON_DESCRIPTOR_LEAF_VSCAN_MASK)))
 498
 499
 500 /* Modifiable Descriptor Leaf manipulation macros */
 501 #define CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_SHIFT 16
 502 #define CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_MASK 0xffff
 503 #define CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_HI_SHIFT 32
 504 #define CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_HI_MASK 0xffff
 505 #define CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_LO_MASK 0xffffffffULL
 506
 507 #define CSR1212_MODIFIABLE_DESCRIPTOR_MAX_SIZE(kv) \
 508         CSR1212_BE16_TO_CPU((kv)->value.leaf.data[0] >> CSR1212_MODIFIABLE_DESCRIPTOR_MAX_SIZE_SHIFT)
 509
 510 #define CSR1212_MODIFIABLE_DESCRIPTOR_ADDRESS(kv) \
 511         (CSR1212_BE16_TO_CPU(((u_int64_t)((kv)->value.leaf.data[0])) << \
 512                              CSR1212_MODIFIABLE_DESCRIPTOR_ADDR_HI_SHIFT) | \
 513          CSR1212_BE32_TO_CPU((kv)->value.leaf.data[1]))
 514
 515 #define CSR1212_MODIFIABLE_DESCRIPTOR_SET_MAX_SIZE(kv, size) \
 516         ((kv)->value.leaf.data[0] = \
 517          ((kv)->value.leaf.data[0] & \
 518           CSR1212_CPU_TO_BE32(~(CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_MASK << \
 519                                 CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_SHIFT))) | \
 520          CSR1212_CPU_TO_BE32(((size) & \
 521                               CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_MASK) << \
 522                              CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_SHIFT))
 523
 524 #define CSR1212_MODIFIABLE_DESCRIPTOR_SET_ADDRESS_HI(kv, addr) \
 525         ((kv)->value.leaf.data[0] = \
 526          ((kv)->value.leaf.data[0] & \
 527           CSR1212_CPU_TO_BE32(~(CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_HI_MASK))) | \
 528           CSR1212_CPU_TO_BE32(((addr) & \
 529                                CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_HI_MASK)))
 530
 531 #define CSR1212_MODIFIABLE_DESCRIPTOR_SET_ADDRESS_LO(kv, addr) \
 532         ((kv)->value.leaf.data[1] = \
 533          CSR1212_CPU_TO_BE32(addr & CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_LO_MASK))
 534
 535
 536
 537 /* The following 2 function are for creating new Configuration ROM trees.  The
 538  * first function is used for both creating local trees and parsing remote
 539  * trees.  The second function adds pertinent information to local Configuration
 540  * ROM trees - namely data for the bus information block. */
 541 extern struct csr1212_csr *csr1212_create_csr(struct csr1212_bus_ops *ops,
 542                                               size_t bus_info_size,
 543                                               void *private);
 544 extern void csr1212_init_local_csr(struct csr1212_csr *csr,
 545                                    const u_int32_t *bus_info_data, int max_rom);
 546
 547
 548 /* The following function destroys a Configuration ROM tree and release all
 549  * memory taken by the tree. */
 550 extern void csr1212_destroy_csr(struct csr1212_csr *csr);
 551
 552
 553 /* The following set of functions are fore creating new keyvals for placement in
 554  * a Configuration ROM tree.  Code that creates new keyvals with these functions
 555  * must release those keyvals with csr1212_release_keyval() when they are no
 556  * longer needed. */
 557 extern struct csr1212_keyval *csr1212_new_immediate(u_int8_t key, u_int32_t value);
 558 extern struct csr1212_keyval *csr1212_new_leaf(u_int8_t key, const void *data,
 559                                                size_t data_len);
 560 extern struct csr1212_keyval *csr1212_new_csr_offset(u_int8_t key,
 561                                                      u_int32_t csr_offset);
 562 extern struct csr1212_keyval *csr1212_new_directory(u_int8_t key);
 563 extern struct csr1212_keyval *csr1212_new_extended_immediate(u_int32_t spec,
 564                                                              u_int32_t key,
 565                                                              u_int32_t value);
 566 extern struct csr1212_keyval *csr1212_new_extended_leaf(u_int32_t spec,
 567                                                         u_int32_t key,
 568                                                         const void *data,
 569                                                         size_t data_len);
 570 extern struct csr1212_keyval *csr1212_new_descriptor_leaf(u_int8_t dtype,
 571                                                           u_int32_t specifier_id,
 572                                                           const void *data,
 573                                                           size_t data_len);
 574 extern struct csr1212_keyval *csr1212_new_textual_descriptor_leaf(u_int8_t cwidth,
 575                                                                   u_int16_t cset,
 576                                                                   u_int16_t language,
 577                                                                   const void *data,
 578                                                                   size_t data_len);
 579 extern struct csr1212_keyval *csr1212_new_string_descriptor_leaf(const char *s);
 580 extern struct csr1212_keyval *csr1212_new_icon_descriptor_leaf(u_int32_t version,
 581                                                                u_int8_t palette_depth,
 582                                                                u_int8_t color_space,
 583                                                                u_int16_t language,
 584                                                                u_int16_t hscan,
 585                                                                u_int16_t vscan,
 586                                                                u_int32_t *palette,
 587                                                                u_int32_t *pixels);
 588 extern struct csr1212_keyval *csr1212_new_modifiable_descriptor_leaf(u_int16_t max_size,
 589                                                                      u_int64_t address);
 590 extern struct csr1212_keyval *csr1212_new_keyword_leaf(int strc,
 591                                                        const char *strv[]);
 592
 593
 594 /* The following functions manage association between keyvals.  Typically,
 595  * Descriptor Leaves and Directories will be associated with another keyval and
 596  * it is desirable for the Descriptor keyval to be place immediately after the
 597  * keyval that it is associated with.*/
 598 extern int csr1212_associate_keyval(struct csr1212_keyval *kv,
 599                                     struct csr1212_keyval *associate);
 600 extern void csr1212_disassociate_keyval(struct csr1212_keyval *kv);
 601
 602
 603 /* The following functions manage the association of a keyval and directories.
 604  * A keyval may be attached to more than one directory. */
 605 extern int csr1212_attach_keyval_to_directory(struct csr1212_keyval *dir,
 606                                               struct csr1212_keyval *kv);
 607 extern void csr1212_detach_keyval_from_directory(struct csr1212_keyval *dir,
 608                                                  struct csr1212_keyval *kv);
 609
 610
 611 /* The following functions create a Configuration ROM image from the tree of
 612  * keyvals provided.  csr1212_generate_csr_image() creates a complete image in
 613  * the list of caches available via csr->cache_head.  The other functions are
 614  * provided should there be a need to create a flat image without restrictions
 615  * placed by IEEE 1212. */
 616 extern struct csr1212_keyval *csr1212_generate_positions(struct csr1212_csr_rom_cache *cache,
 617                                                          struct csr1212_keyval *start_kv,
 618                                                          int start_pos);
 619 extern size_t csr1212_generate_layout_order(struct csr1212_keyval *kv);
 620 extern void csr1212_fill_cache(struct csr1212_csr_rom_cache *cache);
 621 extern int csr1212_generate_csr_image(struct csr1212_csr *csr);
 622
 623
 624 /* This is a convience function for reading a block of data out of one of the
 625  * caches in the csr->cache_head list. */
 626 extern int csr1212_read(struct csr1212_csr *csr, u_int32_t offset, void *buffer,
 627                         u_int32_t len);
 628
 629
 630 /* The following functions are in place for parsing Configuration ROM images.
 631  * csr1212_parse_keyval() is used should there be a need to directly parse a
 632  * Configuration ROM directly. */
 633 extern int csr1212_parse_keyval(struct csr1212_keyval *kv,
 634                                 struct csr1212_csr_rom_cache *cache);
 635 extern int csr1212_parse_csr(struct csr1212_csr *csr);
 636
 637 /* These are internal functions referenced by inline functions below. */
 638 extern int _csr1212_read_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv);
 639 extern void _csr1212_destroy_keyval(struct csr1212_keyval *kv);
 640
 641
 642 /* This function allocates a new cache which may be used for either parsing or
 643  * generating sub-sets of Configuration ROM images. */
 644 static inline struct csr1212_csr_rom_cache *csr1212_rom_cache_malloc(u_int32_t offset,
 645                                                                      size_t size)
 646 {
 647         struct csr1212_csr_rom_cache *cache;
 648
 649         cache = CSR1212_MALLOC(sizeof(*cache) + size);
 650         if (!cache)
 651                 return NULL;
 652
 653         cache->next = NULL;
 654         cache->prev = NULL;
 655         cache->filled_head = NULL;
 656         cache->filled_tail = NULL;
 657         cache->layout_head = NULL;
 658         cache->layout_tail = NULL;
 659         cache->offset = offset;
 660         cache->size = size;
 661         cache->ext_rom = NULL;
 662
 663         return cache;
 664 }
 665
 666
 667 /* This function ensures that a keyval contains data when referencing a keyval
 668  * created by parsing a Configuration ROM. */
 669 static inline struct csr1212_keyval *csr1212_get_keyval(struct csr1212_csr *csr,
 670                                                         struct csr1212_keyval *kv)
 671 {
 672         if (!kv)
 673                 return NULL;
 674         if (!kv->valid)
 675                 if (_csr1212_read_keyval(csr, kv) != CSR1212_SUCCESS)
 676                         return NULL;
 677         return kv;
 678 }
 679
 680
 681 /* This function increments the reference count for a keyval should there be a
 682  * need for code to retain a keyval that has been parsed. */
 683 static inline void csr1212_keep_keyval(struct csr1212_keyval *kv)
 684 {
 685         kv->refcnt++;
 686 }
 687
 688
 689 /* This function decrements a keyval's reference count and will destroy the
 690  * keyval when there are no more users of the keyval.  This should be called by
 691  * any code that calls csr1212_keep_keyval() or any of the keyval creation
 692  * routines csr1212_new_*(). */
 693 static inline void csr1212_release_keyval(struct csr1212_keyval *kv)
 694 {
 695         if (kv->refcnt > 1)
 696                 kv->refcnt--;
 697         else
 698                 _csr1212_destroy_keyval(kv);
 699 }
 700
 701
 702 /*
 703  * This macro allows for looping over the keyval entries in a directory and it
 704  * ensures that keyvals from remote ConfigROMs are parsed properly.
 705  *
 706  * _csr is a struct csr1212_csr * that points to CSR associated with dir.
 707  * _kv is a struct csr1212_keyval * that'll point to the current keyval (loop index).
 708  * _dir is a struct csr1212_keyval * that points to the directory to be looped.
 709  * _pos is a struct csr1212_dentry * that is used internally for indexing.
 710  *
 711  * kv will be NULL upon exit of the loop.
 712  */
 713 #define csr1212_for_each_dir_entry(_csr, _kv, _dir, _pos)                       \
 714         for (csr1212_get_keyval((_csr), (_dir)),                                \
 715              _pos = (_dir)->value.directory.dentries_head,                      \
 716              _kv = (_pos) ? csr1212_get_keyval((_csr), _pos->kv) : NULL;        \
 717              (_kv) && (_pos);                                                   \
 718              (_kv->associate == NULL) ?                                         \
 719                      ((_pos = _pos->next),                                      \
 720                       (_kv = (_pos) ? csr1212_get_keyval((_csr), _pos->kv) :    \
 721                           NULL)) :                                              \
 722                      (_kv = csr1212_get_keyval((_csr), _kv->associate)))
 723
 724
 725
 726 #endif /* __CSR1212_H__ */