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   1 /*
   2  * Machine vector for IA-64.
   3  *
   4  * Copyright (C) 1999 Silicon Graphics, Inc.
   5  * Copyright (C) Srinivasa Thirumalachar <sprasad@engr.sgi.com>
   6  * Copyright (C) Vijay Chander <vijay@engr.sgi.com>
   7  * Copyright (C) 1999-2001, 2003-2004 Hewlett-Packard Co.
   8  *      David Mosberger-Tang <davidm@hpl.hp.com>
   9  */
  10 #ifndef _ASM_IA64_MACHVEC_H
  11 #define _ASM_IA64_MACHVEC_H
  12
  13 #include <linux/types.h>
  14
  15 /* forward declarations: */
  16 struct device;
  17 struct pt_regs;
  18 struct scatterlist;
  19 struct page;
  20 struct mm_struct;
  21 struct pci_bus;
  22 struct task_struct;
  23 struct pci_dev;
  24
  25 typedef void ia64_mv_setup_t (char **);
  26 typedef void ia64_mv_cpu_init_t (void);
  27 typedef void ia64_mv_irq_init_t (void);
  28 typedef void ia64_mv_send_ipi_t (int, int, int, int);
  29 typedef void ia64_mv_timer_interrupt_t (int, void *);
  30 typedef void ia64_mv_global_tlb_purge_t (struct mm_struct *, unsigned long, unsigned long, unsigned long);
  31 typedef void ia64_mv_tlb_migrate_finish_t (struct mm_struct *);
  32 typedef unsigned int ia64_mv_local_vector_to_irq (u8);
  33 typedef char *ia64_mv_pci_get_legacy_mem_t (struct pci_bus *);
  34 typedef int ia64_mv_pci_legacy_read_t (struct pci_bus *, u16 port, u32 *val,
  35                                        u8 size);
  36 typedef int ia64_mv_pci_legacy_write_t (struct pci_bus *, u16 port, u32 val,
  37                                         u8 size);
  38 typedef void ia64_mv_migrate_t(struct task_struct * task);
  39 typedef void ia64_mv_pci_fixup_bus_t (struct pci_bus *);
  40
  41 /* DMA-mapping interface: */
  42 typedef void ia64_mv_dma_init (void);
  43 typedef void *ia64_mv_dma_alloc_coherent (struct device *, size_t, dma_addr_t *, gfp_t);
  44 typedef void ia64_mv_dma_free_coherent (struct device *, size_t, void *, dma_addr_t);
  45 typedef dma_addr_t ia64_mv_dma_map_single (struct device *, void *, size_t, int);
  46 typedef void ia64_mv_dma_unmap_single (struct device *, dma_addr_t, size_t, int);
  47 typedef int ia64_mv_dma_map_sg (struct device *, struct scatterlist *, int, int);
  48 typedef void ia64_mv_dma_unmap_sg (struct device *, struct scatterlist *, int, int);
  49 typedef void ia64_mv_dma_sync_single_for_cpu (struct device *, dma_addr_t, size_t, int);
  50 typedef void ia64_mv_dma_sync_sg_for_cpu (struct device *, struct scatterlist *, int, int);
  51 typedef void ia64_mv_dma_sync_single_for_device (struct device *, dma_addr_t, size_t, int);
  52 typedef void ia64_mv_dma_sync_sg_for_device (struct device *, struct scatterlist *, int, int);
  53 typedef int ia64_mv_dma_mapping_error (dma_addr_t dma_addr);
  54 typedef int ia64_mv_dma_supported (struct device *, u64);
  55
  56 /*
  57  * WARNING: The legacy I/O space is _architected_.  Platforms are
  58  * expected to follow this architected model (see Section 10.7 in the
  59  * IA-64 Architecture Software Developer's Manual).  Unfortunately,
  60  * some broken machines do not follow that model, which is why we have
  61  * to make the inX/outX operations part of the machine vector.
  62  * Platform designers should follow the architected model whenever
  63  * possible.
  64  */
  65 typedef unsigned int ia64_mv_inb_t (unsigned long);
  66 typedef unsigned int ia64_mv_inw_t (unsigned long);
  67 typedef unsigned int ia64_mv_inl_t (unsigned long);
  68 typedef void ia64_mv_outb_t (unsigned char, unsigned long);
  69 typedef void ia64_mv_outw_t (unsigned short, unsigned long);
  70 typedef void ia64_mv_outl_t (unsigned int, unsigned long);
  71 typedef void ia64_mv_mmiowb_t (void);
  72 typedef unsigned char ia64_mv_readb_t (const volatile void __iomem *);
  73 typedef unsigned short ia64_mv_readw_t (const volatile void __iomem *);
  74 typedef unsigned int ia64_mv_readl_t (const volatile void __iomem *);
  75 typedef unsigned long ia64_mv_readq_t (const volatile void __iomem *);
  76 typedef unsigned char ia64_mv_readb_relaxed_t (const volatile void __iomem *);
  77 typedef unsigned short ia64_mv_readw_relaxed_t (const volatile void __iomem *);
  78 typedef unsigned int ia64_mv_readl_relaxed_t (const volatile void __iomem *);
  79 typedef unsigned long ia64_mv_readq_relaxed_t (const volatile void __iomem *);
  80
  81 typedef int ia64_mv_setup_msi_irq_t (unsigned int irq, struct pci_dev *pdev);
  82 typedef void ia64_mv_teardown_msi_irq_t (unsigned int irq);
  83
  84 static inline void
  85 machvec_noop (void)
  86 {
  87 }
  88
  89 static inline void
  90 machvec_noop_mm (struct mm_struct *mm)
  91 {
  92 }
  93
  94 static inline void
  95 machvec_noop_task (struct task_struct *task)
  96 {
  97 }
  98
  99 static inline void
 100 machvec_noop_bus (struct pci_bus *bus)
 101 {
 102 }
 103
 104 extern void machvec_setup (char **);
 105 extern void machvec_timer_interrupt (int, void *);
 106 extern void machvec_dma_sync_single (struct device *, dma_addr_t, size_t, int);
 107 extern void machvec_dma_sync_sg (struct device *, struct scatterlist *, int, int);
 108 extern void machvec_tlb_migrate_finish (struct mm_struct *);
 109
 110 # if defined (CONFIG_IA64_HP_SIM)
 111 #  include <asm/machvec_hpsim.h>
 112 # elif defined (CONFIG_IA64_DIG)
 113 #  include <asm/machvec_dig.h>
 114 # elif defined (CONFIG_IA64_HP_ZX1)
 115 #  include <asm/machvec_hpzx1.h>
 116 # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
 117 #  include <asm/machvec_hpzx1_swiotlb.h>
 118 # elif defined (CONFIG_IA64_SGI_SN2)
 119 #  include <asm/machvec_sn2.h>
 120 # elif defined (CONFIG_IA64_GENERIC)
 121
 122 # ifdef MACHVEC_PLATFORM_HEADER
 123 #  include MACHVEC_PLATFORM_HEADER
 124 # else
 125 #  define platform_name         ia64_mv.name
 126 #  define platform_setup        ia64_mv.setup
 127 #  define platform_cpu_init     ia64_mv.cpu_init
 128 #  define platform_irq_init     ia64_mv.irq_init
 129 #  define platform_send_ipi     ia64_mv.send_ipi
 130 #  define platform_timer_interrupt      ia64_mv.timer_interrupt
 131 #  define platform_global_tlb_purge     ia64_mv.global_tlb_purge
 132 #  define platform_tlb_migrate_finish   ia64_mv.tlb_migrate_finish
 133 #  define platform_dma_init             ia64_mv.dma_init
 134 #  define platform_dma_alloc_coherent   ia64_mv.dma_alloc_coherent
 135 #  define platform_dma_free_coherent    ia64_mv.dma_free_coherent
 136 #  define platform_dma_map_single       ia64_mv.dma_map_single
 137 #  define platform_dma_unmap_single     ia64_mv.dma_unmap_single
 138 #  define platform_dma_map_sg           ia64_mv.dma_map_sg
 139 #  define platform_dma_unmap_sg         ia64_mv.dma_unmap_sg
 140 #  define platform_dma_sync_single_for_cpu ia64_mv.dma_sync_single_for_cpu
 141 #  define platform_dma_sync_sg_for_cpu  ia64_mv.dma_sync_sg_for_cpu
 142 #  define platform_dma_sync_single_for_device ia64_mv.dma_sync_single_for_device
 143 #  define platform_dma_sync_sg_for_device ia64_mv.dma_sync_sg_for_device
 144 #  define platform_dma_mapping_error            ia64_mv.dma_mapping_error
 145 #  define platform_dma_supported        ia64_mv.dma_supported
 146 #  define platform_local_vector_to_irq  ia64_mv.local_vector_to_irq
 147 #  define platform_pci_get_legacy_mem   ia64_mv.pci_get_legacy_mem
 148 #  define platform_pci_legacy_read      ia64_mv.pci_legacy_read
 149 #  define platform_pci_legacy_write     ia64_mv.pci_legacy_write
 150 #  define platform_inb          ia64_mv.inb
 151 #  define platform_inw          ia64_mv.inw
 152 #  define platform_inl          ia64_mv.inl
 153 #  define platform_outb         ia64_mv.outb
 154 #  define platform_outw         ia64_mv.outw
 155 #  define platform_outl         ia64_mv.outl
 156 #  define platform_mmiowb       ia64_mv.mmiowb
 157 #  define platform_readb        ia64_mv.readb
 158 #  define platform_readw        ia64_mv.readw
 159 #  define platform_readl        ia64_mv.readl
 160 #  define platform_readq        ia64_mv.readq
 161 #  define platform_readb_relaxed        ia64_mv.readb_relaxed
 162 #  define platform_readw_relaxed        ia64_mv.readw_relaxed
 163 #  define platform_readl_relaxed        ia64_mv.readl_relaxed
 164 #  define platform_readq_relaxed        ia64_mv.readq_relaxed
 165 #  define platform_migrate              ia64_mv.migrate
 166 #  define platform_setup_msi_irq        ia64_mv.setup_msi_irq
 167 #  define platform_teardown_msi_irq     ia64_mv.teardown_msi_irq
 168 #  define platform_pci_fixup_bus        ia64_mv.pci_fixup_bus
 169 # endif
 170
 171 /* __attribute__((__aligned__(16))) is required to make size of the
 172  * structure multiple of 16 bytes.
 173  * This will fillup the holes created because of section 3.3.1 in
 174  * Software Conventions guide.
 175  */
 176 struct ia64_machine_vector {
 177         const char *name;
 178         ia64_mv_setup_t *setup;
 179         ia64_mv_cpu_init_t *cpu_init;
 180         ia64_mv_irq_init_t *irq_init;
 181         ia64_mv_send_ipi_t *send_ipi;
 182         ia64_mv_timer_interrupt_t *timer_interrupt;
 183         ia64_mv_global_tlb_purge_t *global_tlb_purge;
 184         ia64_mv_tlb_migrate_finish_t *tlb_migrate_finish;
 185         ia64_mv_dma_init *dma_init;
 186         ia64_mv_dma_alloc_coherent *dma_alloc_coherent;
 187         ia64_mv_dma_free_coherent *dma_free_coherent;
 188         ia64_mv_dma_map_single *dma_map_single;
 189         ia64_mv_dma_unmap_single *dma_unmap_single;
 190         ia64_mv_dma_map_sg *dma_map_sg;
 191         ia64_mv_dma_unmap_sg *dma_unmap_sg;
 192         ia64_mv_dma_sync_single_for_cpu *dma_sync_single_for_cpu;
 193         ia64_mv_dma_sync_sg_for_cpu *dma_sync_sg_for_cpu;
 194         ia64_mv_dma_sync_single_for_device *dma_sync_single_for_device;
 195         ia64_mv_dma_sync_sg_for_device *dma_sync_sg_for_device;
 196         ia64_mv_dma_mapping_error *dma_mapping_error;
 197         ia64_mv_dma_supported *dma_supported;
 198         ia64_mv_local_vector_to_irq *local_vector_to_irq;
 199         ia64_mv_pci_get_legacy_mem_t *pci_get_legacy_mem;
 200         ia64_mv_pci_legacy_read_t *pci_legacy_read;
 201         ia64_mv_pci_legacy_write_t *pci_legacy_write;
 202         ia64_mv_inb_t *inb;
 203         ia64_mv_inw_t *inw;
 204         ia64_mv_inl_t *inl;
 205         ia64_mv_outb_t *outb;
 206         ia64_mv_outw_t *outw;
 207         ia64_mv_outl_t *outl;
 208         ia64_mv_mmiowb_t *mmiowb;
 209         ia64_mv_readb_t *readb;
 210         ia64_mv_readw_t *readw;
 211         ia64_mv_readl_t *readl;
 212         ia64_mv_readq_t *readq;
 213         ia64_mv_readb_relaxed_t *readb_relaxed;
 214         ia64_mv_readw_relaxed_t *readw_relaxed;
 215         ia64_mv_readl_relaxed_t *readl_relaxed;
 216         ia64_mv_readq_relaxed_t *readq_relaxed;
 217         ia64_mv_migrate_t *migrate;
 218         ia64_mv_setup_msi_irq_t *setup_msi_irq;
 219         ia64_mv_teardown_msi_irq_t *teardown_msi_irq;
 220         ia64_mv_pci_fixup_bus_t *pci_fixup_bus;
 221 } __attribute__((__aligned__(16))); /* align attrib? see above comment */
 222
 223 #define MACHVEC_INIT(name)                      \
 224 {                                               \
 225         #name,                                  \
 226         platform_setup,                         \
 227         platform_cpu_init,                      \
 228         platform_irq_init,                      \
 229         platform_send_ipi,                      \
 230         platform_timer_interrupt,               \
 231         platform_global_tlb_purge,              \
 232         platform_tlb_migrate_finish,            \
 233         platform_dma_init,                      \
 234         platform_dma_alloc_coherent,            \
 235         platform_dma_free_coherent,             \
 236         platform_dma_map_single,                \
 237         platform_dma_unmap_single,              \
 238         platform_dma_map_sg,                    \
 239         platform_dma_unmap_sg,                  \
 240         platform_dma_sync_single_for_cpu,       \
 241         platform_dma_sync_sg_for_cpu,           \
 242         platform_dma_sync_single_for_device,    \
 243         platform_dma_sync_sg_for_device,        \
 244         platform_dma_mapping_error,                     \
 245         platform_dma_supported,                 \
 246         platform_local_vector_to_irq,           \
 247         platform_pci_get_legacy_mem,            \
 248         platform_pci_legacy_read,               \
 249         platform_pci_legacy_write,              \
 250         platform_inb,                           \
 251         platform_inw,                           \
 252         platform_inl,                           \
 253         platform_outb,                          \
 254         platform_outw,                          \
 255         platform_outl,                          \
 256         platform_mmiowb,                        \
 257         platform_readb,                         \
 258         platform_readw,                         \
 259         platform_readl,                         \
 260         platform_readq,                         \
 261         platform_readb_relaxed,                 \
 262         platform_readw_relaxed,                 \
 263         platform_readl_relaxed,                 \
 264         platform_readq_relaxed,                 \
 265         platform_migrate,                       \
 266         platform_setup_msi_irq,                 \
 267         platform_teardown_msi_irq,              \
 268         platform_pci_fixup_bus,                 \
 269 }
 270
 271 extern struct ia64_machine_vector ia64_mv;
 272 extern void machvec_init (const char *name);
 273
 274 # else
 275 #  error Unknown configuration.  Update asm-ia64/machvec.h.
 276 # endif /* CONFIG_IA64_GENERIC */
 277
 278 /*
 279  * Declare default routines which aren't declared anywhere else:
 280  */
 281 extern ia64_mv_dma_init                 swiotlb_init;
 282 extern ia64_mv_dma_alloc_coherent       swiotlb_alloc_coherent;
 283 extern ia64_mv_dma_free_coherent        swiotlb_free_coherent;
 284 extern ia64_mv_dma_map_single           swiotlb_map_single;
 285 extern ia64_mv_dma_unmap_single         swiotlb_unmap_single;
 286 extern ia64_mv_dma_map_sg               swiotlb_map_sg;
 287 extern ia64_mv_dma_unmap_sg             swiotlb_unmap_sg;
 288 extern ia64_mv_dma_sync_single_for_cpu  swiotlb_sync_single_for_cpu;
 289 extern ia64_mv_dma_sync_sg_for_cpu      swiotlb_sync_sg_for_cpu;
 290 extern ia64_mv_dma_sync_single_for_device swiotlb_sync_single_for_device;
 291 extern ia64_mv_dma_sync_sg_for_device   swiotlb_sync_sg_for_device;
 292 extern ia64_mv_dma_mapping_error        swiotlb_dma_mapping_error;
 293 extern ia64_mv_dma_supported            swiotlb_dma_supported;
 294
 295 /*
 296  * Define default versions so we can extend machvec for new platforms without having
 297  * to update the machvec files for all existing platforms.
 298  */
 299 #ifndef platform_setup
 300 # define platform_setup                 machvec_setup
 301 #endif
 302 #ifndef platform_cpu_init
 303 # define platform_cpu_init              machvec_noop
 304 #endif
 305 #ifndef platform_irq_init
 306 # define platform_irq_init              machvec_noop
 307 #endif
 308
 309 #ifndef platform_send_ipi
 310 # define platform_send_ipi              ia64_send_ipi   /* default to architected version */
 311 #endif
 312 #ifndef platform_timer_interrupt
 313 # define platform_timer_interrupt       machvec_timer_interrupt
 314 #endif
 315 #ifndef platform_global_tlb_purge
 316 # define platform_global_tlb_purge      ia64_global_tlb_purge /* default to architected version */
 317 #endif
 318 #ifndef platform_tlb_migrate_finish
 319 # define platform_tlb_migrate_finish    machvec_noop_mm
 320 #endif
 321 #ifndef platform_dma_init
 322 # define platform_dma_init              swiotlb_init
 323 #endif
 324 #ifndef platform_dma_alloc_coherent
 325 # define platform_dma_alloc_coherent    swiotlb_alloc_coherent
 326 #endif
 327 #ifndef platform_dma_free_coherent
 328 # define platform_dma_free_coherent     swiotlb_free_coherent
 329 #endif
 330 #ifndef platform_dma_map_single
 331 # define platform_dma_map_single        swiotlb_map_single
 332 #endif
 333 #ifndef platform_dma_unmap_single
 334 # define platform_dma_unmap_single      swiotlb_unmap_single
 335 #endif
 336 #ifndef platform_dma_map_sg
 337 # define platform_dma_map_sg            swiotlb_map_sg
 338 #endif
 339 #ifndef platform_dma_unmap_sg
 340 # define platform_dma_unmap_sg          swiotlb_unmap_sg
 341 #endif
 342 #ifndef platform_dma_sync_single_for_cpu
 343 # define platform_dma_sync_single_for_cpu       swiotlb_sync_single_for_cpu
 344 #endif
 345 #ifndef platform_dma_sync_sg_for_cpu
 346 # define platform_dma_sync_sg_for_cpu           swiotlb_sync_sg_for_cpu
 347 #endif
 348 #ifndef platform_dma_sync_single_for_device
 349 # define platform_dma_sync_single_for_device    swiotlb_sync_single_for_device
 350 #endif
 351 #ifndef platform_dma_sync_sg_for_device
 352 # define platform_dma_sync_sg_for_device        swiotlb_sync_sg_for_device
 353 #endif
 354 #ifndef platform_dma_mapping_error
 355 # define platform_dma_mapping_error             swiotlb_dma_mapping_error
 356 #endif
 357 #ifndef platform_dma_supported
 358 # define  platform_dma_supported        swiotlb_dma_supported
 359 #endif
 360 #ifndef platform_local_vector_to_irq
 361 # define platform_local_vector_to_irq   __ia64_local_vector_to_irq
 362 #endif
 363 #ifndef platform_pci_get_legacy_mem
 364 # define platform_pci_get_legacy_mem    ia64_pci_get_legacy_mem
 365 #endif
 366 #ifndef platform_pci_legacy_read
 367 # define platform_pci_legacy_read       ia64_pci_legacy_read
 368 extern int ia64_pci_legacy_read(struct pci_bus *bus, u16 port, u32 *val, u8 size);
 369 #endif
 370 #ifndef platform_pci_legacy_write
 371 # define platform_pci_legacy_write      ia64_pci_legacy_write
 372 extern int ia64_pci_legacy_write(struct pci_bus *bus, u16 port, u32 val, u8 size);
 373 #endif
 374 #ifndef platform_inb
 375 # define platform_inb           __ia64_inb
 376 #endif
 377 #ifndef platform_inw
 378 # define platform_inw           __ia64_inw
 379 #endif
 380 #ifndef platform_inl
 381 # define platform_inl           __ia64_inl
 382 #endif
 383 #ifndef platform_outb
 384 # define platform_outb          __ia64_outb
 385 #endif
 386 #ifndef platform_outw
 387 # define platform_outw          __ia64_outw
 388 #endif
 389 #ifndef platform_outl
 390 # define platform_outl          __ia64_outl
 391 #endif
 392 #ifndef platform_mmiowb
 393 # define platform_mmiowb        __ia64_mmiowb
 394 #endif
 395 #ifndef platform_readb
 396 # define platform_readb         __ia64_readb
 397 #endif
 398 #ifndef platform_readw
 399 # define platform_readw         __ia64_readw
 400 #endif
 401 #ifndef platform_readl
 402 # define platform_readl         __ia64_readl
 403 #endif
 404 #ifndef platform_readq
 405 # define platform_readq         __ia64_readq
 406 #endif
 407 #ifndef platform_readb_relaxed
 408 # define platform_readb_relaxed __ia64_readb_relaxed
 409 #endif
 410 #ifndef platform_readw_relaxed
 411 # define platform_readw_relaxed __ia64_readw_relaxed
 412 #endif
 413 #ifndef platform_readl_relaxed
 414 # define platform_readl_relaxed __ia64_readl_relaxed
 415 #endif
 416 #ifndef platform_readq_relaxed
 417 # define platform_readq_relaxed __ia64_readq_relaxed
 418 #endif
 419 #ifndef platform_migrate
 420 # define platform_migrate machvec_noop_task
 421 #endif
 422 #ifndef platform_setup_msi_irq
 423 # define platform_setup_msi_irq         ((ia64_mv_setup_msi_irq_t*)NULL)
 424 #endif
 425 #ifndef platform_teardown_msi_irq
 426 # define platform_teardown_msi_irq      ((ia64_mv_teardown_msi_irq_t*)NULL)
 427 #endif
 428 #ifndef platform_pci_fixup_bus
 429 # define platform_pci_fixup_bus machvec_noop_bus
 430 #endif
 431
 432 #endif /* _ASM_IA64_MACHVEC_H */