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