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 - 1997, 1999, 2000 Silicon Graphics, Inc. 7 * Copyright (C) 1999, 2000 by Ralf Baechle 8 */ 9 #ifndef _ASM_SN_ADDRS_H 10 #define _ASM_SN_ADDRS_H 11 12 13 #ifndef __ASSEMBLY__ 14 #include <linux/smp.h> 15 #include <linux/types.h> 16 #endif /* !__ASSEMBLY__ */ 17 18 #include <asm/addrspace.h> 19 #include <asm/sn/kldir.h> 20 21 #if defined(CONFIG_SGI_IP27) 22 #include <asm/sn/sn0/addrs.h> 23 #elif defined(CONFIG_SGI_IP35) 24 #include <asm/sn/sn1/addrs.h> 25 #endif 26 27 28 #ifndef __ASSEMBLY__ 29 30 #define UINT64_CAST (unsigned long) 31 32 #else /* __ASSEMBLY__ */ 33 34 #define UINT64_CAST 35 36 #endif /* __ASSEMBLY__ */ 37 38 39 #define NASID_GET_META(_n) ((_n) >> NASID_LOCAL_BITS) 40 #ifdef CONFIG_SGI_IP27 41 #define NASID_GET_LOCAL(_n) ((_n) & 0xf) 42 #endif 43 #define NASID_MAKE(_m, _l) (((_m) << NASID_LOCAL_BITS) | (_l)) 44 45 #define NODE_ADDRSPACE_MASK (NODE_ADDRSPACE_SIZE - 1) 46 #define TO_NODE_ADDRSPACE(_pa) (UINT64_CAST (_pa) & NODE_ADDRSPACE_MASK) 47 48 #define CHANGE_ADDR_NASID(_pa, _nasid) \ 49 ((UINT64_CAST(_pa) & ~NASID_MASK) | \ 50 (UINT64_CAST(_nasid) << NASID_SHFT)) 51 52 53 /* 54 * The following macros are used to index to the beginning of a specific 55 * node's address space. 56 */ 57 58 #define NODE_OFFSET(_n) (UINT64_CAST (_n) << NODE_SIZE_BITS) 59 60 #define NODE_CAC_BASE(_n) (CAC_BASE + NODE_OFFSET(_n)) 61 #define NODE_HSPEC_BASE(_n) (HSPEC_BASE + NODE_OFFSET(_n)) 62 #define NODE_IO_BASE(_n) (IO_BASE + NODE_OFFSET(_n)) 63 #define NODE_MSPEC_BASE(_n) (MSPEC_BASE + NODE_OFFSET(_n)) 64 #define NODE_UNCAC_BASE(_n) (UNCAC_BASE + NODE_OFFSET(_n)) 65 66 #define TO_NODE(_n, _x) (NODE_OFFSET(_n) | ((_x) )) 67 #define TO_NODE_CAC(_n, _x) (NODE_CAC_BASE(_n) | ((_x) & TO_PHYS_MASK)) 68 #define TO_NODE_UNCAC(_n, _x) (NODE_UNCAC_BASE(_n) | ((_x) & TO_PHYS_MASK)) 69 #define TO_NODE_MSPEC(_n, _x) (NODE_MSPEC_BASE(_n) | ((_x) & TO_PHYS_MASK)) 70 #define TO_NODE_HSPEC(_n, _x) (NODE_HSPEC_BASE(_n) | ((_x) & TO_PHYS_MASK)) 71 72 73 #define RAW_NODE_SWIN_BASE(nasid, widget) \ 74 (NODE_IO_BASE(nasid) + (UINT64_CAST(widget) << SWIN_SIZE_BITS)) 75 76 #define WIDGETID_GET(addr) ((unsigned char)((addr >> SWIN_SIZE_BITS) & 0xff)) 77 78 /* 79 * The following definitions pertain to the IO special address 80 * space. They define the location of the big and little windows 81 * of any given node. 82 */ 83 84 #define SWIN_SIZE_BITS 24 85 #define SWIN_SIZE (UINT64_CAST 1 << 24) 86 #define SWIN_SIZEMASK (SWIN_SIZE - 1) 87 #define SWIN_WIDGET_MASK 0xF 88 89 /* 90 * Convert smallwindow address to xtalk address. 91 * 92 * 'addr' can be physical or virtual address, but will be converted 93 * to Xtalk address in the range 0 -> SWINZ_SIZEMASK 94 */ 95 #define SWIN_WIDGETADDR(addr) ((addr) & SWIN_SIZEMASK) 96 #define SWIN_WIDGETNUM(addr) (((addr) >> SWIN_SIZE_BITS) & SWIN_WIDGET_MASK) 97 /* 98 * Verify if addr belongs to small window address on node with "nasid" 99 * 100 * 101 * NOTE: "addr" is expected to be XKPHYS address, and NOT physical 102 * address 103 * 104 * 105 */ 106 #define NODE_SWIN_ADDR(nasid, addr) \ 107 (((addr) >= NODE_SWIN_BASE(nasid, 0)) && \ 108 ((addr) < (NODE_SWIN_BASE(nasid, HUB_NUM_WIDGET) + SWIN_SIZE)\ 109 )) 110 111 /* 112 * The following define the major position-independent aliases used 113 * in SN. 114 * UALIAS -- 256MB in size, reads in the UALIAS result in 115 * uncached references to the memory of the reader's node. 116 * CPU_UALIAS -- 128kb in size, the bottom part of UALIAS is flipped 117 * depending on which CPU does the access to provide 118 * all CPUs with unique uncached memory at low addresses. 119 * LBOOT -- 256MB in size, reads in the LBOOT area result in 120 * uncached references to the local hub's boot prom and 121 * other directory-bus connected devices. 122 * IALIAS -- 8MB in size, reads in the IALIAS result in uncached 123 * references to the local hub's registers. 124 */ 125 126 #define UALIAS_BASE HSPEC_BASE 127 #define UALIAS_SIZE 0x10000000 /* 256 Megabytes */ 128 #define UALIAS_LIMIT (UALIAS_BASE + UALIAS_SIZE) 129 130 /* 131 * The bottom of ualias space is flipped depending on whether you're 132 * processor 0 or 1 within a node. 133 */ 134 #ifdef CONFIG_SGI_IP27 135 #define UALIAS_FLIP_BASE UALIAS_BASE 136 #define UALIAS_FLIP_SIZE 0x20000 137 #define UALIAS_FLIP_BIT 0x10000 138 #define UALIAS_FLIP_ADDR(_x) (cputoslice(smp_processor_id()) ? \ 139 (_x) ^ UALIAS_FLIP_BIT : (_x)) 140 141 #define LBOOT_BASE (HSPEC_BASE + 0x10000000) 142 #define LBOOT_SIZE 0x10000000 143 #define LBOOT_LIMIT (LBOOT_BASE + LBOOT_SIZE) 144 #define LBOOT_STRIDE 0 /* IP27 has only one CPU PROM */ 145 146 #endif 147 148 #define HUB_REGISTER_WIDGET 1 149 #define IALIAS_BASE NODE_SWIN_BASE(0, HUB_REGISTER_WIDGET) 150 #define IALIAS_SIZE 0x800000 /* 8 Megabytes */ 151 #define IS_IALIAS(_a) (((_a) >= IALIAS_BASE) && \ 152 ((_a) < (IALIAS_BASE + IALIAS_SIZE))) 153 154 /* 155 * Macro for referring to Hub's RBOOT space 156 */ 157 158 #ifdef CONFIG_SGI_IP27 159 #define RBOOT_SIZE 0x10000000 /* 256 Megabytes */ 160 #define NODE_RBOOT_BASE(_n) (NODE_HSPEC_BASE(_n) + 0x30000000) 161 #define NODE_RBOOT_LIMIT(_n) (NODE_RBOOT_BASE(_n) + RBOOT_SIZE) 162 163 #endif 164 165 /* 166 * Macros for referring the Hub's back door space 167 * 168 * These macros correctly process addresses in any node's space. 169 * WARNING: They won't work in assembler. 170 * 171 * BDDIR_ENTRY_LO returns the address of the low double-word of the dir 172 * entry corresponding to a physical (Cac or Uncac) address. 173 * BDDIR_ENTRY_HI returns the address of the high double-word of the entry. 174 * BDPRT_ENTRY returns the address of the double-word protection entry 175 * corresponding to the page containing the physical address. 176 * BDPRT_ENTRY_S Stores the value into the protection entry. 177 * BDPRT_ENTRY_L Load the value from the protection entry. 178 * BDECC_ENTRY returns the address of the ECC byte corresponding to a 179 * double-word at a specified physical address. 180 * BDECC_ENTRY_H returns the address of the two ECC bytes corresponding to a 181 * quad-word at a specified physical address. 182 */ 183 #define NODE_BDOOR_BASE(_n) (NODE_HSPEC_BASE(_n) + (NODE_ADDRSPACE_SIZE/2)) 184 185 #define NODE_BDECC_BASE(_n) (NODE_BDOOR_BASE(_n)) 186 #define NODE_BDDIR_BASE(_n) (NODE_BDOOR_BASE(_n) + (NODE_ADDRSPACE_SIZE/4)) 187 #ifdef CONFIG_SGI_IP27 188 #define BDDIR_ENTRY_LO(_pa) ((HSPEC_BASE + \ 189 NODE_ADDRSPACE_SIZE * 3 / 4 + \ 190 0x200) | \ 191 UINT64_CAST(_pa) & NASID_MASK | \ 192 UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK | \ 193 UINT64_CAST(_pa) >> 3 & 0x1f << 4) 194 195 #define BDDIR_ENTRY_HI(_pa) ((HSPEC_BASE + \ 196 NODE_ADDRSPACE_SIZE * 3 / 4 + \ 197 0x208) | \ 198 UINT64_CAST(_pa) & NASID_MASK | \ 199 UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK | \ 200 UINT64_CAST(_pa) >> 3 & 0x1f << 4) 201 202 #define BDPRT_ENTRY(_pa, _rgn) ((HSPEC_BASE + \ 203 NODE_ADDRSPACE_SIZE * 3 / 4) | \ 204 UINT64_CAST(_pa) & NASID_MASK | \ 205 UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK | \ 206 (_rgn) << 3) 207 #define BDPRT_ENTRY_ADDR(_pa, _rgn) (BDPRT_ENTRY((_pa), (_rgn))) 208 #define BDPRT_ENTRY_S(_pa, _rgn, _val) (*(__psunsigned_t *)BDPRT_ENTRY((_pa), (_rgn))=(_val)) 209 #define BDPRT_ENTRY_L(_pa, _rgn) (*(__psunsigned_t *)BDPRT_ENTRY((_pa), (_rgn))) 210 211 #define BDECC_ENTRY(_pa) ((HSPEC_BASE + \ 212 NODE_ADDRSPACE_SIZE / 2) | \ 213 UINT64_CAST(_pa) & NASID_MASK | \ 214 UINT64_CAST(_pa) >> 2 & BDECC_UPPER_MASK | \ 215 UINT64_CAST(_pa) >> 3 & 3) 216 217 /* 218 * Macro to convert a back door directory or protection address into the 219 * raw physical address of the associated cache line or protection page. 220 */ 221 #define BDADDR_IS_DIR(_ba) ((UINT64_CAST (_ba) & 0x200) != 0) 222 #define BDADDR_IS_PRT(_ba) ((UINT64_CAST (_ba) & 0x200) == 0) 223 224 #define BDDIR_TO_MEM(_ba) (UINT64_CAST (_ba) & NASID_MASK | \ 225 (UINT64_CAST(_ba) & BDDIR_UPPER_MASK)<<2 | \ 226 (UINT64_CAST(_ba) & 0x1f << 4) << 3) 227 228 #define BDPRT_TO_MEM(_ba) (UINT64_CAST (_ba) & NASID_MASK | \ 229 (UINT64_CAST(_ba) & BDDIR_UPPER_MASK)<<2) 230 231 #define BDECC_TO_MEM(_ba) (UINT64_CAST (_ba) & NASID_MASK | \ 232 (UINT64_CAST(_ba) & BDECC_UPPER_MASK)<<2 | \ 233 (UINT64_CAST(_ba) & 3) << 3) 234 #endif /* CONFIG_SGI_IP27 */ 235 236 237 /* 238 * The following macros produce the correct base virtual address for 239 * the hub registers. The LOCAL_HUB_* macros produce the appropriate 240 * address for the local registers. The REMOTE_HUB_* macro produce 241 * the address for the specified hub's registers. The intent is 242 * that the appropriate PI, MD, NI, or II register would be substituted 243 * for _x. 244 */ 245 246 /* 247 * WARNING: 248 * When certain Hub chip workaround are defined, it's not sufficient 249 * to dereference the *_HUB_ADDR() macros. You should instead use 250 * HUB_L() and HUB_S() if you must deal with pointers to hub registers. 251 * Otherwise, the recommended approach is to use *_HUB_L() and *_HUB_S(). 252 * They're always safe. 253 */ 254 #define LOCAL_HUB_ADDR(_x) (IALIAS_BASE + (_x)) 255 #define REMOTE_HUB_ADDR(_n, _x) ((NODE_SWIN_BASE(_n, 1) + 0x800000 + (_x))) 256 257 #ifndef __ASSEMBLY__ 258 259 #define LOCAL_HUB_PTR(_x) ((u64 *)LOCAL_HUB_ADDR((_x))) 260 #define REMOTE_HUB_PTR(_n, _x) ((u64 *)REMOTE_HUB_ADDR((_n), (_x))) 261 262 #define LOCAL_HUB_L(_r) __raw_readq(LOCAL_HUB_PTR(_r)) 263 #define LOCAL_HUB_S(_r, _d) __raw_writeq((_d), LOCAL_HUB_PTR(_r)) 264 #define REMOTE_HUB_L(_n, _r) __raw_readq(REMOTE_HUB_PTR((_n), (_r))) 265 #define REMOTE_HUB_S(_n, _r, _d) __raw_writeq((_d), \ 266 REMOTE_HUB_PTR((_n), (_r))) 267 268 #endif /* !__ASSEMBLY__ */ 269 270 /* 271 * Software structure locations -- permanently fixed 272 * See diagram in kldir.h 273 */ 274 275 #define PHYS_RAMBASE 0x0 276 #define K0_RAMBASE PHYS_TO_K0(PHYS_RAMBASE) 277 278 #define EX_HANDLER_OFFSET(slice) ((slice) << 16) 279 #define EX_HANDLER_ADDR(nasid, slice) \ 280 PHYS_TO_K0(NODE_OFFSET(nasid) | EX_HANDLER_OFFSET(slice)) 281 #define EX_HANDLER_SIZE 0x0400 282 283 #define EX_FRAME_OFFSET(slice) ((slice) << 16 | 0x400) 284 #define EX_FRAME_ADDR(nasid, slice) \ 285 PHYS_TO_K0(NODE_OFFSET(nasid) | EX_FRAME_OFFSET(slice)) 286 #define EX_FRAME_SIZE 0x0c00 287 288 #define ARCS_SPB_OFFSET 0x1000 289 #define ARCS_SPB_ADDR(nasid) \ 290 PHYS_TO_K0(NODE_OFFSET(nasid) | ARCS_SPB_OFFSET) 291 #define ARCS_SPB_SIZE 0x0400 292 293 #define KLDIR_OFFSET 0x2000 294 #define KLDIR_ADDR(nasid) \ 295 TO_NODE_UNCAC((nasid), KLDIR_OFFSET) 296 #define KLDIR_SIZE 0x0400 297 298 299 /* 300 * Software structure locations -- indirected through KLDIR 301 * See diagram in kldir.h 302 * 303 * Important: All low memory structures must only be accessed 304 * uncached, except for the symmon stacks. 305 */ 306 307 #define KLI_LAUNCH 0 /* Dir. entries */ 308 #define KLI_KLCONFIG 1 309 #define KLI_NMI 2 310 #define KLI_GDA 3 311 #define KLI_FREEMEM 4 312 #define KLI_SYMMON_STK 5 313 #define KLI_PI_ERROR 6 314 #define KLI_KERN_VARS 7 315 #define KLI_KERN_XP 8 316 #define KLI_KERN_PARTID 9 317 318 #ifndef __ASSEMBLY__ 319 320 #define KLD_BASE(nasid) ((kldir_ent_t *) KLDIR_ADDR(nasid)) 321 #define KLD_LAUNCH(nasid) (KLD_BASE(nasid) + KLI_LAUNCH) 322 #define KLD_NMI(nasid) (KLD_BASE(nasid) + KLI_NMI) 323 #define KLD_KLCONFIG(nasid) (KLD_BASE(nasid) + KLI_KLCONFIG) 324 #define KLD_PI_ERROR(nasid) (KLD_BASE(nasid) + KLI_PI_ERROR) 325 #define KLD_GDA(nasid) (KLD_BASE(nasid) + KLI_GDA) 326 #define KLD_SYMMON_STK(nasid) (KLD_BASE(nasid) + KLI_SYMMON_STK) 327 #define KLD_FREEMEM(nasid) (KLD_BASE(nasid) + KLI_FREEMEM) 328 #define KLD_KERN_VARS(nasid) (KLD_BASE(nasid) + KLI_KERN_VARS) 329 #define KLD_KERN_XP(nasid) (KLD_BASE(nasid) + KLI_KERN_XP) 330 #define KLD_KERN_PARTID(nasid) (KLD_BASE(nasid) + KLI_KERN_PARTID) 331 332 #define LAUNCH_OFFSET(nasid, slice) \ 333 (KLD_LAUNCH(nasid)->offset + \ 334 KLD_LAUNCH(nasid)->stride * (slice)) 335 #define LAUNCH_ADDR(nasid, slice) \ 336 TO_NODE_UNCAC((nasid), LAUNCH_OFFSET(nasid, slice)) 337 #define LAUNCH_SIZE(nasid) KLD_LAUNCH(nasid)->size 338 339 #define SN_NMI_OFFSET(nasid, slice) \ 340 (KLD_NMI(nasid)->offset + \ 341 KLD_NMI(nasid)->stride * (slice)) 342 #define NMI_ADDR(nasid, slice) \ 343 TO_NODE_UNCAC((nasid), SN_NMI_OFFSET(nasid, slice)) 344 #define NMI_SIZE(nasid) KLD_NMI(nasid)->size 345 346 #define KLCONFIG_OFFSET(nasid) KLD_KLCONFIG(nasid)->offset 347 #define KLCONFIG_ADDR(nasid) \ 348 TO_NODE_UNCAC((nasid), KLCONFIG_OFFSET(nasid)) 349 #define KLCONFIG_SIZE(nasid) KLD_KLCONFIG(nasid)->size 350 351 #define GDA_ADDR(nasid) KLD_GDA(nasid)->pointer 352 #define GDA_SIZE(nasid) KLD_GDA(nasid)->size 353 354 #define SYMMON_STK_OFFSET(nasid, slice) \ 355 (KLD_SYMMON_STK(nasid)->offset + \ 356 KLD_SYMMON_STK(nasid)->stride * (slice)) 357 #define SYMMON_STK_STRIDE(nasid) KLD_SYMMON_STK(nasid)->stride 358 359 #define SYMMON_STK_ADDR(nasid, slice) \ 360 TO_NODE_CAC((nasid), SYMMON_STK_OFFSET(nasid, slice)) 361 362 #define SYMMON_STK_SIZE(nasid) KLD_SYMMON_STK(nasid)->stride 363 364 #define SYMMON_STK_END(nasid) (SYMMON_STK_ADDR(nasid, 0) + KLD_SYMMON_STK(nasid)->size) 365 366 #define NODE_OFFSET_TO_K0(_nasid, _off) \ 367 PHYS_TO_K0((NODE_OFFSET(_nasid) + (_off)) | CAC_BASE) 368 #define NODE_OFFSET_TO_K1(_nasid, _off) \ 369 TO_UNCAC((NODE_OFFSET(_nasid) + (_off)) | UNCAC_BASE) 370 371 #define KERN_VARS_ADDR(nasid) KLD_KERN_VARS(nasid)->pointer 372 #define KERN_VARS_SIZE(nasid) KLD_KERN_VARS(nasid)->size 373 374 #endif /* !__ASSEMBLY__ */ 375 376 377 #endif /* _ASM_SN_ADDRS_H */ 378