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