include/asm-ia64/sn/addrs.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (c) 1992-1999,2001-2005 Silicon Graphics, Inc. All rights reserved.
   7  */
   8
   9 #ifndef _ASM_IA64_SN_ADDRS_H
  10 #define _ASM_IA64_SN_ADDRS_H
  11
  12 #include <asm/percpu.h>
  13 #include <asm/sn/types.h>
  14 #include <asm/sn/arch.h>
  15 #include <asm/sn/pda.h>
  16
  17 /*
  18  *  Memory/SHUB Address Format:
  19  *  +-+---------+--+--------------+
  20  *  |0|  NASID  |AS| NodeOffset   |
  21  *  +-+---------+--+--------------+
  22  *
  23  *  NASID: (low NASID bit is 0) Memory and SHUB MMRs
  24  *   AS: 2-bit Address Space Identifier. Used only if low NASID bit is 0
  25  *     00: Local Resources and MMR space
  26  *           Top bit of NodeOffset
  27  *               0: Local resources space
  28  *                  node id:
  29  *                        0: IA64/NT compatibility space
  30  *                        2: Local MMR Space
  31  *                        4: Local memory, regardless of local node id
  32  *               1: Global MMR space
  33  *     01: GET space.
  34  *     10: AMO space.
  35  *     11: Cacheable memory space.
  36  *
  37  *   NodeOffset: byte offset
  38  *
  39  *
  40  *  TIO address format:
  41  *  +-+----------+--+--------------+
  42  *  |0|  NASID   |AS| Nodeoffset   |
  43  *  +-+----------+--+--------------+
  44  *
  45  *  NASID: (low NASID bit is 1) TIO
  46  *   AS: 2-bit Chiplet Identifier
  47  *     00: TIO LB (Indicates TIO MMR access.)
  48  *     01: TIO ICE (indicates coretalk space access.)
  49  *
  50  *   NodeOffset: top bit must be set.
  51  *
  52  *
  53  * Note that in both of the above address formats, the low
  54  * NASID bit indicates if the reference is to the SHUB or TIO MMRs.
  55  */
  56
  57
  58 /*
  59  * Define basic shift & mask constants for manipulating NASIDs and AS values.
  60  */
  61 #define NASID_BITMASK           (sn_hub_info->nasid_bitmask)
  62 #define NASID_SHIFT             (sn_hub_info->nasid_shift)
  63 #define AS_SHIFT                (sn_hub_info->as_shift)
  64 #define AS_BITMASK              0x3UL
  65
  66 #define NASID_MASK              ((u64)NASID_BITMASK << NASID_SHIFT)
  67 #define AS_MASK                 ((u64)AS_BITMASK << AS_SHIFT)
  68
  69
  70 /*
  71  * AS values. These are the same on both SHUB1 & SHUB2.
  72  */
  73 #define AS_GET_VAL              1UL
  74 #define AS_AMO_VAL              2UL
  75 #define AS_CAC_VAL              3UL
  76 #define AS_GET_SPACE            (AS_GET_VAL << AS_SHIFT)
  77 #define AS_AMO_SPACE            (AS_AMO_VAL << AS_SHIFT)
  78 #define AS_CAC_SPACE            (AS_CAC_VAL << AS_SHIFT)
  79
  80
  81 /*
  82  * Virtual Mode Local & Global MMR space.
  83  */
  84 #define SH1_LOCAL_MMR_OFFSET    0x8000000000UL
  85 #define SH2_LOCAL_MMR_OFFSET    0x0200000000UL
  86 #define LOCAL_MMR_OFFSET        (is_shub2() ? SH2_LOCAL_MMR_OFFSET : SH1_LOCAL_MMR_OFFSET)
  87 #define LOCAL_MMR_SPACE         (__IA64_UNCACHED_OFFSET | LOCAL_MMR_OFFSET)
  88 #define LOCAL_PHYS_MMR_SPACE    (RGN_BASE(RGN_HPAGE) | LOCAL_MMR_OFFSET)
  89
  90 #define SH1_GLOBAL_MMR_OFFSET   0x0800000000UL
  91 #define SH2_GLOBAL_MMR_OFFSET   0x0300000000UL
  92 #define GLOBAL_MMR_OFFSET       (is_shub2() ? SH2_GLOBAL_MMR_OFFSET : SH1_GLOBAL_MMR_OFFSET)
  93 #define GLOBAL_MMR_SPACE        (__IA64_UNCACHED_OFFSET | GLOBAL_MMR_OFFSET)
  94
  95 /*
  96  * Physical mode addresses
  97  */
  98 #define GLOBAL_PHYS_MMR_SPACE   (RGN_BASE(RGN_HPAGE) | GLOBAL_MMR_OFFSET)
  99
 100
 101 /*
 102  * Clear region & AS bits.
 103  */
 104 #define TO_PHYS_MASK            (~(RGN_BITS | AS_MASK))
 105
 106
 107 /*
 108  * Misc NASID manipulation.
 109  */
 110 #define NASID_SPACE(n)          ((u64)(n) << NASID_SHIFT)
 111 #define REMOTE_ADDR(n,a)        (NASID_SPACE(n) | (a))
 112 #define NODE_OFFSET(x)          ((x) & (NODE_ADDRSPACE_SIZE - 1))
 113 #define NODE_ADDRSPACE_SIZE     (1UL << AS_SHIFT)
 114 #define NASID_GET(x)            (int) (((u64) (x) >> NASID_SHIFT) & NASID_BITMASK)
 115 #define LOCAL_MMR_ADDR(a)       (LOCAL_MMR_SPACE | (a))
 116 #define GLOBAL_MMR_ADDR(n,a)    (GLOBAL_MMR_SPACE | REMOTE_ADDR(n,a))
 117 #define GLOBAL_MMR_PHYS_ADDR(n,a) (GLOBAL_PHYS_MMR_SPACE | REMOTE_ADDR(n,a))
 118 #define GLOBAL_CAC_ADDR(n,a)    (CAC_BASE | REMOTE_ADDR(n,a))
 119 #define CHANGE_NASID(n,x)       ((void *)(((u64)(x) & ~NASID_MASK) | NASID_SPACE(n)))
 120 #define IS_TIO_NASID(n)         ((n) & 1)
 121
 122
 123 /* non-II mmr's start at top of big window space (4G) */
 124 #define BWIN_TOP                0x0000000100000000UL
 125
 126 /*
 127  * general address defines
 128  */
 129 #define CAC_BASE                (PAGE_OFFSET | AS_CAC_SPACE)
 130 #define AMO_BASE                (__IA64_UNCACHED_OFFSET | AS_AMO_SPACE)
 131 #define AMO_PHYS_BASE           (RGN_BASE(RGN_HPAGE) | AS_AMO_SPACE)
 132 #define GET_BASE                (PAGE_OFFSET | AS_GET_SPACE)
 133
 134 /*
 135  * Convert Memory addresses between various addressing modes.
 136  */
 137 #define TO_PHYS(x)              (TO_PHYS_MASK & (x))
 138 #define TO_CAC(x)               (CAC_BASE     | TO_PHYS(x))
 139 #ifdef CONFIG_SGI_SN
 140 #define TO_AMO(x)               (AMO_BASE     | TO_PHYS(x))
 141 #define TO_GET(x)               (GET_BASE     | TO_PHYS(x))
 142 #else
 143 #define TO_AMO(x)               ({ BUG(); x; })
 144 #define TO_GET(x)               ({ BUG(); x; })
 145 #endif
 146
 147 /*
 148  * Covert from processor physical address to II/TIO physical address:
 149  *      II - squeeze out the AS bits
 150  *      TIO- requires a chiplet id in bits 38-39.  For DMA to memory,
 151  *           the chiplet id is zero.  If we implement TIO-TIO dma, we might need
 152  *           to insert a chiplet id into this macro.  However, it is our belief
 153  *           right now that this chiplet id will be ICE, which is also zero.
 154  */
 155 #define SH1_TIO_PHYS_TO_DMA(x)                                          \
 156         ((((u64)(NASID_GET(x))) << 40) | NODE_OFFSET(x))
 157
 158 #define SH2_NETWORK_BANK_OFFSET(x)                                      \
 159         ((u64)(x) & ((1UL << (sn_hub_info->nasid_shift - 4)) -1))
 160
 161 #define SH2_NETWORK_BANK_SELECT(x)                                      \
 162         ((((u64)(x) & (0x3UL << (sn_hub_info->nasid_shift - 4)))        \
 163                 >> (sn_hub_info->nasid_shift - 4)) << 36)
 164
 165 #define SH2_NETWORK_ADDRESS(x)                                          \
 166         (SH2_NETWORK_BANK_OFFSET(x) | SH2_NETWORK_BANK_SELECT(x))
 167
 168 #define SH2_TIO_PHYS_TO_DMA(x)                                          \
 169         (((u64)(NASID_GET(x)) << 40) |  SH2_NETWORK_ADDRESS(x))
 170
 171 #define PHYS_TO_TIODMA(x)                                               \
 172         (is_shub1() ? SH1_TIO_PHYS_TO_DMA(x) : SH2_TIO_PHYS_TO_DMA(x))
 173
 174 #define PHYS_TO_DMA(x)                                                  \
 175         ((((u64)(x) & NASID_MASK) >> 2) | NODE_OFFSET(x))
 176
 177
 178 /*
 179  * Macros to test for address type.
 180  */
 181 #define IS_AMO_ADDRESS(x)       (((u64)(x) & (RGN_BITS | AS_MASK)) == AMO_BASE)
 182 #define IS_AMO_PHYS_ADDRESS(x)  (((u64)(x) & (RGN_BITS | AS_MASK)) == AMO_PHYS_BASE)
 183
 184
 185 /*
 186  * The following definitions pertain to the IO special address
 187  * space.  They define the location of the big and little windows
 188  * of any given node.
 189  */
 190 #define BWIN_SIZE_BITS                  29      /* big window size: 512M */
 191 #define TIO_BWIN_SIZE_BITS              30      /* big window size: 1G */
 192 #define NODE_SWIN_BASE(n, w)            ((w == 0) ? NODE_BWIN_BASE((n), SWIN0_BIGWIN) \
 193                 : RAW_NODE_SWIN_BASE(n, w))
 194 #define TIO_SWIN_BASE(n, w)             (TIO_IO_BASE(n) + \
 195                                             ((u64) (w) << TIO_SWIN_SIZE_BITS))
 196 #define NODE_IO_BASE(n)                 (GLOBAL_MMR_SPACE | NASID_SPACE(n))
 197 #define TIO_IO_BASE(n)                  (__IA64_UNCACHED_OFFSET | NASID_SPACE(n))
 198 #define BWIN_SIZE                       (1UL << BWIN_SIZE_BITS)
 199 #define NODE_BWIN_BASE0(n)              (NODE_IO_BASE(n) + BWIN_SIZE)
 200 #define NODE_BWIN_BASE(n, w)            (NODE_BWIN_BASE0(n) + ((u64) (w) << BWIN_SIZE_BITS))
 201 #define RAW_NODE_SWIN_BASE(n, w)        (NODE_IO_BASE(n) + ((u64) (w) << SWIN_SIZE_BITS))
 202 #define BWIN_WIDGET_MASK                0x7
 203 #define BWIN_WINDOWNUM(x)               (((x) >> BWIN_SIZE_BITS) & BWIN_WIDGET_MASK)
 204 #define SH1_IS_BIG_WINDOW_ADDR(x)       ((x) & BWIN_TOP)
 205
 206 #define TIO_BWIN_WINDOW_SELECT_MASK     0x7
 207 #define TIO_BWIN_WINDOWNUM(x)           (((x) >> TIO_BWIN_SIZE_BITS) & TIO_BWIN_WINDOW_SELECT_MASK)
 208
 209 #define TIO_HWIN_SHIFT_BITS             33
 210 #define TIO_HWIN(x)                     (NODE_OFFSET(x) >> TIO_HWIN_SHIFT_BITS)
 211
 212 /*
 213  * The following definitions pertain to the IO special address
 214  * space.  They define the location of the big and little windows
 215  * of any given node.
 216  */
 217
 218 #define SWIN_SIZE_BITS                  24
 219 #define SWIN_WIDGET_MASK                0xF
 220
 221 #define TIO_SWIN_SIZE_BITS              28
 222 #define TIO_SWIN_SIZE                   (1UL << TIO_SWIN_SIZE_BITS)
 223 #define TIO_SWIN_WIDGET_MASK            0x3
 224
 225 /*
 226  * Convert smallwindow address to xtalk address.
 227  *
 228  * 'addr' can be physical or virtual address, but will be converted
 229  * to Xtalk address in the range 0 -> SWINZ_SIZEMASK
 230  */
 231 #define SWIN_WIDGETNUM(x)               (((x)  >> SWIN_SIZE_BITS) & SWIN_WIDGET_MASK)
 232 #define TIO_SWIN_WIDGETNUM(x)           (((x)  >> TIO_SWIN_SIZE_BITS) & TIO_SWIN_WIDGET_MASK)
 233
 234
 235 /*
 236  * The following macros produce the correct base virtual address for
 237  * the hub registers. The REMOTE_HUB_* macro produce
 238  * the address for the specified hub's registers.  The intent is
 239  * that the appropriate PI, MD, NI, or II register would be substituted
 240  * for x.
 241  *
 242  *   WARNING:
 243  *      When certain Hub chip workaround are defined, it's not sufficient
 244  *      to dereference the *_HUB_ADDR() macros.  You should instead use
 245  *      HUB_L() and HUB_S() if you must deal with pointers to hub registers.
 246  *      Otherwise, the recommended approach is to use *_HUB_L() and *_HUB_S().
 247  *      They're always safe.
 248  */
 249 /* Shub1 TIO & MMR addressing macros */
 250 #define SH1_TIO_IOSPACE_ADDR(n,x)                                       \
 251         GLOBAL_MMR_ADDR(n,x)
 252
 253 #define SH1_REMOTE_BWIN_MMR(n,x)                                        \
 254         GLOBAL_MMR_ADDR(n,x)
 255
 256 #define SH1_REMOTE_SWIN_MMR(n,x)                                        \
 257         (NODE_SWIN_BASE(n,1) + 0x800000UL + (x))
 258
 259 #define SH1_REMOTE_MMR(n,x)                                             \
 260         (SH1_IS_BIG_WINDOW_ADDR(x) ? SH1_REMOTE_BWIN_MMR(n,x) :         \
 261                 SH1_REMOTE_SWIN_MMR(n,x))
 262
 263 /* Shub1 TIO & MMR addressing macros */
 264 #define SH2_TIO_IOSPACE_ADDR(n,x)                                       \
 265         ((__IA64_UNCACHED_OFFSET | REMOTE_ADDR(n,x) | 1UL << (NASID_SHIFT - 2)))
 266
 267 #define SH2_REMOTE_MMR(n,x)                                             \
 268         GLOBAL_MMR_ADDR(n,x)
 269
 270
 271 /* TIO & MMR addressing macros that work on both shub1 & shub2 */
 272 #define TIO_IOSPACE_ADDR(n,x)                                           \
 273         ((u64 *)(is_shub1() ? SH1_TIO_IOSPACE_ADDR(n,x) :               \
 274                  SH2_TIO_IOSPACE_ADDR(n,x)))
 275
 276 #define SH_REMOTE_MMR(n,x)                                              \
 277         (is_shub1() ? SH1_REMOTE_MMR(n,x) : SH2_REMOTE_MMR(n,x))
 278
 279 #define REMOTE_HUB_ADDR(n,x)                                            \
 280         (IS_TIO_NASID(n) ?  ((volatile u64*)TIO_IOSPACE_ADDR(n,x)) :    \
 281          ((volatile u64*)SH_REMOTE_MMR(n,x)))
 282
 283
 284 #define HUB_L(x)                        (*((volatile typeof(*x) *)x))
 285 #define HUB_S(x,d)                      (*((volatile typeof(*x) *)x) = (d))
 286
 287 #define REMOTE_HUB_L(n, a)              HUB_L(REMOTE_HUB_ADDR((n), (a)))
 288 #define REMOTE_HUB_S(n, a, d)           HUB_S(REMOTE_HUB_ADDR((n), (a)), (d))
 289
 290 /*
 291  * Coretalk address breakdown
 292  */
 293 #define CTALK_NASID_SHFT                40
 294 #define CTALK_NASID_MASK                (0x3FFFULL << CTALK_NASID_SHFT)
 295 #define CTALK_CID_SHFT                  38
 296 #define CTALK_CID_MASK                  (0x3ULL << CTALK_CID_SHFT)
 297 #define CTALK_NODE_OFFSET               0x3FFFFFFFFF
 298
 299 #endif /* _ASM_IA64_SN_ADDRS_H */