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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 #include <linux/swiotlb.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 struct pci_dev;
  25 struct msi_desc;
  26 struct dma_attrs;
  27
  28 typedef void ia64_mv_setup_t (char **);
  29 typedef void ia64_mv_cpu_init_t (void);
  30 typedef void ia64_mv_irq_init_t (void);
  31 typedef void ia64_mv_send_ipi_t (int, int, int, int);
  32 typedef void ia64_mv_timer_interrupt_t (int, void *);
  33 typedef void ia64_mv_global_tlb_purge_t (struct mm_struct *, unsigned long, unsigned long, unsigned long);
  34 typedef void ia64_mv_tlb_migrate_finish_t (struct mm_struct *);
  35 typedef u8 ia64_mv_irq_to_vector (int);
  36 typedef unsigned int ia64_mv_local_vector_to_irq (u8);
  37 typedef char *ia64_mv_pci_get_legacy_mem_t (struct pci_bus *);
  38 typedef int ia64_mv_pci_legacy_read_t (struct pci_bus *, u16 port, u32 *val,
  39                                        u8 size);
  40 typedef int ia64_mv_pci_legacy_write_t (struct pci_bus *, u16 port, u32 val,
  41                                         u8 size);
  42 typedef void ia64_mv_migrate_t(struct task_struct * task);
  43 typedef void ia64_mv_pci_fixup_bus_t (struct pci_bus *);
  44 typedef void ia64_mv_kernel_launch_event_t(void);
  45
  46 /* DMA-mapping interface: */
  47 typedef void ia64_mv_dma_init (void);
  48 typedef void *ia64_mv_dma_alloc_coherent (struct device *, size_t, dma_addr_t *, gfp_t);
  49 typedef void ia64_mv_dma_free_coherent (struct device *, size_t, void *, dma_addr_t);
  50 typedef dma_addr_t ia64_mv_dma_map_single (struct device *, void *, size_t, int);
  51 typedef void ia64_mv_dma_unmap_single (struct device *, dma_addr_t, size_t, int);
  52 typedef int ia64_mv_dma_map_sg (struct device *, struct scatterlist *, int, int);
  53 typedef void ia64_mv_dma_unmap_sg (struct device *, struct scatterlist *, int, int);
  54 typedef void ia64_mv_dma_sync_single_for_cpu (struct device *, dma_addr_t, size_t, int);
  55 typedef void ia64_mv_dma_sync_sg_for_cpu (struct device *, struct scatterlist *, int, int);
  56 typedef void ia64_mv_dma_sync_single_for_device (struct device *, dma_addr_t, size_t, int);
  57 typedef void ia64_mv_dma_sync_sg_for_device (struct device *, struct scatterlist *, int, int);
  58 typedef int ia64_mv_dma_mapping_error(struct device *, dma_addr_t dma_addr);
  59 typedef int ia64_mv_dma_supported (struct device *, u64);
  60
  61 typedef dma_addr_t ia64_mv_dma_map_single_attrs (struct device *, void *, size_t, int, struct dma_attrs *);
  62 typedef void ia64_mv_dma_unmap_single_attrs (struct device *, dma_addr_t, size_t, int, struct dma_attrs *);
  63 typedef int ia64_mv_dma_map_sg_attrs (struct device *, struct scatterlist *, int, int, struct dma_attrs *);
  64 typedef void ia64_mv_dma_unmap_sg_attrs (struct device *, struct scatterlist *, int, int, struct dma_attrs *);
  65 typedef u64 ia64_mv_dma_get_required_mask (struct device *);
  66
  67 /*
  68  * WARNING: The legacy I/O space is _architected_.  Platforms are
  69  * expected to follow this architected model (see Section 10.7 in the
  70  * IA-64 Architecture Software Developer's Manual).  Unfortunately,
  71  * some broken machines do not follow that model, which is why we have
  72  * to make the inX/outX operations part of the machine vector.
  73  * Platform designers should follow the architected model whenever
  74  * possible.
  75  */
  76 typedef unsigned int ia64_mv_inb_t (unsigned long);
  77 typedef unsigned int ia64_mv_inw_t (unsigned long);
  78 typedef unsigned int ia64_mv_inl_t (unsigned long);
  79 typedef void ia64_mv_outb_t (unsigned char, unsigned long);
  80 typedef void ia64_mv_outw_t (unsigned short, unsigned long);
  81 typedef void ia64_mv_outl_t (unsigned int, unsigned long);
  82 typedef void ia64_mv_mmiowb_t (void);
  83 typedef unsigned char ia64_mv_readb_t (const volatile void __iomem *);
  84 typedef unsigned short ia64_mv_readw_t (const volatile void __iomem *);
  85 typedef unsigned int ia64_mv_readl_t (const volatile void __iomem *);
  86 typedef unsigned long ia64_mv_readq_t (const volatile void __iomem *);
  87 typedef unsigned char ia64_mv_readb_relaxed_t (const volatile void __iomem *);
  88 typedef unsigned short ia64_mv_readw_relaxed_t (const volatile void __iomem *);
  89 typedef unsigned int ia64_mv_readl_relaxed_t (const volatile void __iomem *);
  90 typedef unsigned long ia64_mv_readq_relaxed_t (const volatile void __iomem *);
  91
  92 typedef int ia64_mv_setup_msi_irq_t (struct pci_dev *pdev, struct msi_desc *);
  93 typedef void ia64_mv_teardown_msi_irq_t (unsigned int irq);
  94
  95 static inline void
  96 machvec_noop (void)
  97 {
  98 }
  99
 100 static inline void
 101 machvec_noop_mm (struct mm_struct *mm)
 102 {
 103 }
 104
 105 static inline void
 106 machvec_noop_task (struct task_struct *task)
 107 {
 108 }
 109
 110 static inline void
 111 machvec_noop_bus (struct pci_bus *bus)
 112 {
 113 }
 114
 115 extern void machvec_setup (char **);
 116 extern void machvec_timer_interrupt (int, void *);
 117 extern void machvec_dma_sync_single (struct device *, dma_addr_t, size_t, int);
 118 extern void machvec_dma_sync_sg (struct device *, struct scatterlist *, int, int);
 119 extern void machvec_tlb_migrate_finish (struct mm_struct *);
 120
 121 # if defined (CONFIG_IA64_HP_SIM)
 122 #  include <asm/machvec_hpsim.h>
 123 # elif defined (CONFIG_IA64_DIG)
 124 #  include <asm/machvec_dig.h>
 125 # elif defined(CONFIG_IA64_DIG_VTD)
 126 #  include <asm/machvec_dig_vtd.h>
 127 # elif defined (CONFIG_IA64_HP_ZX1)
 128 #  include <asm/machvec_hpzx1.h>
 129 # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
 130 #  include <asm/machvec_hpzx1_swiotlb.h>
 131 # elif defined (CONFIG_IA64_SGI_SN2)
 132 #  include <asm/machvec_sn2.h>
 133 # elif defined (CONFIG_IA64_SGI_UV)
 134 #  include <asm/machvec_uv.h>
 135 # elif defined (CONFIG_IA64_XEN_GUEST)
 136 #  include <asm/machvec_xen.h>
 137 # elif defined (CONFIG_IA64_GENERIC)
 138
 139 # ifdef MACHVEC_PLATFORM_HEADER
 140 #  include MACHVEC_PLATFORM_HEADER
 141 # else
 142 #  define platform_name         ia64_mv.name
 143 #  define platform_setup        ia64_mv.setup
 144 #  define platform_cpu_init     ia64_mv.cpu_init
 145 #  define platform_irq_init     ia64_mv.irq_init
 146 #  define platform_send_ipi     ia64_mv.send_ipi
 147 #  define platform_timer_interrupt      ia64_mv.timer_interrupt
 148 #  define platform_global_tlb_purge     ia64_mv.global_tlb_purge
 149 #  define platform_tlb_migrate_finish   ia64_mv.tlb_migrate_finish
 150 #  define platform_dma_init             ia64_mv.dma_init
 151 #  define platform_dma_alloc_coherent   ia64_mv.dma_alloc_coherent
 152 #  define platform_dma_free_coherent    ia64_mv.dma_free_coherent
 153 #  define platform_dma_map_single_attrs ia64_mv.dma_map_single_attrs
 154 #  define platform_dma_unmap_single_attrs       ia64_mv.dma_unmap_single_attrs
 155 #  define platform_dma_map_sg_attrs     ia64_mv.dma_map_sg_attrs
 156 #  define platform_dma_unmap_sg_attrs   ia64_mv.dma_unmap_sg_attrs
 157 #  define platform_dma_sync_single_for_cpu ia64_mv.dma_sync_single_for_cpu
 158 #  define platform_dma_sync_sg_for_cpu  ia64_mv.dma_sync_sg_for_cpu
 159 #  define platform_dma_sync_single_for_device ia64_mv.dma_sync_single_for_device
 160 #  define platform_dma_sync_sg_for_device ia64_mv.dma_sync_sg_for_device
 161 #  define platform_dma_mapping_error            ia64_mv.dma_mapping_error
 162 #  define platform_dma_supported        ia64_mv.dma_supported
 163 #  define platform_dma_get_required_mask ia64_mv.dma_get_required_mask
 164 #  define platform_irq_to_vector        ia64_mv.irq_to_vector
 165 #  define platform_local_vector_to_irq  ia64_mv.local_vector_to_irq
 166 #  define platform_pci_get_legacy_mem   ia64_mv.pci_get_legacy_mem
 167 #  define platform_pci_legacy_read      ia64_mv.pci_legacy_read
 168 #  define platform_pci_legacy_write     ia64_mv.pci_legacy_write
 169 #  define platform_inb          ia64_mv.inb
 170 #  define platform_inw          ia64_mv.inw
 171 #  define platform_inl          ia64_mv.inl
 172 #  define platform_outb         ia64_mv.outb
 173 #  define platform_outw         ia64_mv.outw
 174 #  define platform_outl         ia64_mv.outl
 175 #  define platform_mmiowb       ia64_mv.mmiowb
 176 #  define platform_readb        ia64_mv.readb
 177 #  define platform_readw        ia64_mv.readw
 178 #  define platform_readl        ia64_mv.readl
 179 #  define platform_readq        ia64_mv.readq
 180 #  define platform_readb_relaxed        ia64_mv.readb_relaxed
 181 #  define platform_readw_relaxed        ia64_mv.readw_relaxed
 182 #  define platform_readl_relaxed        ia64_mv.readl_relaxed
 183 #  define platform_readq_relaxed        ia64_mv.readq_relaxed
 184 #  define platform_migrate              ia64_mv.migrate
 185 #  define platform_setup_msi_irq        ia64_mv.setup_msi_irq
 186 #  define platform_teardown_msi_irq     ia64_mv.teardown_msi_irq
 187 #  define platform_pci_fixup_bus        ia64_mv.pci_fixup_bus
 188 #  define platform_kernel_launch_event  ia64_mv.kernel_launch_event
 189 # endif
 190
 191 /* __attribute__((__aligned__(16))) is required to make size of the
 192  * structure multiple of 16 bytes.
 193  * This will fillup the holes created because of section 3.3.1 in
 194  * Software Conventions guide.
 195  */
 196 struct ia64_machine_vector {
 197         const char *name;
 198         ia64_mv_setup_t *setup;
 199         ia64_mv_cpu_init_t *cpu_init;
 200         ia64_mv_irq_init_t *irq_init;
 201         ia64_mv_send_ipi_t *send_ipi;
 202         ia64_mv_timer_interrupt_t *timer_interrupt;
 203         ia64_mv_global_tlb_purge_t *global_tlb_purge;
 204         ia64_mv_tlb_migrate_finish_t *tlb_migrate_finish;
 205         ia64_mv_dma_init *dma_init;
 206         ia64_mv_dma_alloc_coherent *dma_alloc_coherent;
 207         ia64_mv_dma_free_coherent *dma_free_coherent;
 208         ia64_mv_dma_map_single_attrs *dma_map_single_attrs;
 209         ia64_mv_dma_unmap_single_attrs *dma_unmap_single_attrs;
 210         ia64_mv_dma_map_sg_attrs *dma_map_sg_attrs;
 211         ia64_mv_dma_unmap_sg_attrs *dma_unmap_sg_attrs;
 212         ia64_mv_dma_sync_single_for_cpu *dma_sync_single_for_cpu;
 213         ia64_mv_dma_sync_sg_for_cpu *dma_sync_sg_for_cpu;
 214         ia64_mv_dma_sync_single_for_device *dma_sync_single_for_device;
 215         ia64_mv_dma_sync_sg_for_device *dma_sync_sg_for_device;
 216         ia64_mv_dma_mapping_error *dma_mapping_error;
 217         ia64_mv_dma_supported *dma_supported;
 218         ia64_mv_dma_get_required_mask *dma_get_required_mask;
 219         ia64_mv_irq_to_vector *irq_to_vector;
 220         ia64_mv_local_vector_to_irq *local_vector_to_irq;
 221         ia64_mv_pci_get_legacy_mem_t *pci_get_legacy_mem;
 222         ia64_mv_pci_legacy_read_t *pci_legacy_read;
 223         ia64_mv_pci_legacy_write_t *pci_legacy_write;
 224         ia64_mv_inb_t *inb;
 225         ia64_mv_inw_t *inw;
 226         ia64_mv_inl_t *inl;
 227         ia64_mv_outb_t *outb;
 228         ia64_mv_outw_t *outw;
 229         ia64_mv_outl_t *outl;
 230         ia64_mv_mmiowb_t *mmiowb;
 231         ia64_mv_readb_t *readb;
 232         ia64_mv_readw_t *readw;
 233         ia64_mv_readl_t *readl;
 234         ia64_mv_readq_t *readq;
 235         ia64_mv_readb_relaxed_t *readb_relaxed;
 236         ia64_mv_readw_relaxed_t *readw_relaxed;
 237         ia64_mv_readl_relaxed_t *readl_relaxed;
 238         ia64_mv_readq_relaxed_t *readq_relaxed;
 239         ia64_mv_migrate_t *migrate;
 240         ia64_mv_setup_msi_irq_t *setup_msi_irq;
 241         ia64_mv_teardown_msi_irq_t *teardown_msi_irq;
 242         ia64_mv_pci_fixup_bus_t *pci_fixup_bus;
 243         ia64_mv_kernel_launch_event_t *kernel_launch_event;
 244 } __attribute__((__aligned__(16))); /* align attrib? see above comment */
 245
 246 #define MACHVEC_INIT(name)                      \
 247 {                                               \
 248         #name,                                  \
 249         platform_setup,                         \
 250         platform_cpu_init,                      \
 251         platform_irq_init,                      \
 252         platform_send_ipi,                      \
 253         platform_timer_interrupt,               \
 254         platform_global_tlb_purge,              \
 255         platform_tlb_migrate_finish,            \
 256         platform_dma_init,                      \
 257         platform_dma_alloc_coherent,            \
 258         platform_dma_free_coherent,             \
 259         platform_dma_map_single_attrs,          \
 260         platform_dma_unmap_single_attrs,        \
 261         platform_dma_map_sg_attrs,              \
 262         platform_dma_unmap_sg_attrs,            \
 263         platform_dma_sync_single_for_cpu,       \
 264         platform_dma_sync_sg_for_cpu,           \
 265         platform_dma_sync_single_for_device,    \
 266         platform_dma_sync_sg_for_device,        \
 267         platform_dma_mapping_error,                     \
 268         platform_dma_supported,                 \
 269         platform_dma_get_required_mask,         \
 270         platform_irq_to_vector,                 \
 271         platform_local_vector_to_irq,           \
 272         platform_pci_get_legacy_mem,            \
 273         platform_pci_legacy_read,               \
 274         platform_pci_legacy_write,              \
 275         platform_inb,                           \
 276         platform_inw,                           \
 277         platform_inl,                           \
 278         platform_outb,                          \
 279         platform_outw,                          \
 280         platform_outl,                          \
 281         platform_mmiowb,                        \
 282         platform_readb,                         \
 283         platform_readw,                         \
 284         platform_readl,                         \
 285         platform_readq,                         \
 286         platform_readb_relaxed,                 \
 287         platform_readw_relaxed,                 \
 288         platform_readl_relaxed,                 \
 289         platform_readq_relaxed,                 \
 290         platform_migrate,                       \
 291         platform_setup_msi_irq,                 \
 292         platform_teardown_msi_irq,              \
 293         platform_pci_fixup_bus,                 \
 294         platform_kernel_launch_event            \
 295 }
 296
 297 extern struct ia64_machine_vector ia64_mv;
 298 extern void machvec_init (const char *name);
 299 extern void machvec_init_from_cmdline(const char *cmdline);
 300
 301 # else
 302 #  error Unknown configuration.  Update arch/ia64/include/asm/machvec.h.
 303 # endif /* CONFIG_IA64_GENERIC */
 304
 305 /*
 306  * Define default versions so we can extend machvec for new platforms without having
 307  * to update the machvec files for all existing platforms.
 308  */
 309 #ifndef platform_setup
 310 # define platform_setup                 machvec_setup
 311 #endif
 312 #ifndef platform_cpu_init
 313 # define platform_cpu_init              machvec_noop
 314 #endif
 315 #ifndef platform_irq_init
 316 # define platform_irq_init              machvec_noop
 317 #endif
 318
 319 #ifndef platform_send_ipi
 320 # define platform_send_ipi              ia64_send_ipi   /* default to architected version */
 321 #endif
 322 #ifndef platform_timer_interrupt
 323 # define platform_timer_interrupt       machvec_timer_interrupt
 324 #endif
 325 #ifndef platform_global_tlb_purge
 326 # define platform_global_tlb_purge      ia64_global_tlb_purge /* default to architected version */
 327 #endif
 328 #ifndef platform_tlb_migrate_finish
 329 # define platform_tlb_migrate_finish    machvec_noop_mm
 330 #endif
 331 #ifndef platform_kernel_launch_event
 332 # define platform_kernel_launch_event   machvec_noop
 333 #endif
 334 #ifndef platform_dma_init
 335 # define platform_dma_init              swiotlb_init
 336 #endif
 337 #ifndef platform_dma_alloc_coherent
 338 # define platform_dma_alloc_coherent    swiotlb_alloc_coherent
 339 #endif
 340 #ifndef platform_dma_free_coherent
 341 # define platform_dma_free_coherent     swiotlb_free_coherent
 342 #endif
 343 #ifndef platform_dma_map_single_attrs
 344 # define platform_dma_map_single_attrs  swiotlb_map_single_attrs
 345 #endif
 346 #ifndef platform_dma_unmap_single_attrs
 347 # define platform_dma_unmap_single_attrs        swiotlb_unmap_single_attrs
 348 #endif
 349 #ifndef platform_dma_map_sg_attrs
 350 # define platform_dma_map_sg_attrs      swiotlb_map_sg_attrs
 351 #endif
 352 #ifndef platform_dma_unmap_sg_attrs
 353 # define platform_dma_unmap_sg_attrs    swiotlb_unmap_sg_attrs
 354 #endif
 355 #ifndef platform_dma_sync_single_for_cpu
 356 # define platform_dma_sync_single_for_cpu       swiotlb_sync_single_for_cpu
 357 #endif
 358 #ifndef platform_dma_sync_sg_for_cpu
 359 # define platform_dma_sync_sg_for_cpu           swiotlb_sync_sg_for_cpu
 360 #endif
 361 #ifndef platform_dma_sync_single_for_device
 362 # define platform_dma_sync_single_for_device    swiotlb_sync_single_for_device
 363 #endif
 364 #ifndef platform_dma_sync_sg_for_device
 365 # define platform_dma_sync_sg_for_device        swiotlb_sync_sg_for_device
 366 #endif
 367 #ifndef platform_dma_mapping_error
 368 # define platform_dma_mapping_error             swiotlb_dma_mapping_error
 369 #endif
 370 #ifndef platform_dma_supported
 371 # define  platform_dma_supported        swiotlb_dma_supported
 372 #endif
 373 #ifndef platform_dma_get_required_mask
 374 # define  platform_dma_get_required_mask        ia64_dma_get_required_mask
 375 #endif
 376 #ifndef platform_irq_to_vector
 377 # define platform_irq_to_vector         __ia64_irq_to_vector
 378 #endif
 379 #ifndef platform_local_vector_to_irq
 380 # define platform_local_vector_to_irq   __ia64_local_vector_to_irq
 381 #endif
 382 #ifndef platform_pci_get_legacy_mem
 383 # define platform_pci_get_legacy_mem    ia64_pci_get_legacy_mem
 384 #endif
 385 #ifndef platform_pci_legacy_read
 386 # define platform_pci_legacy_read       ia64_pci_legacy_read
 387 extern int ia64_pci_legacy_read(struct pci_bus *bus, u16 port, u32 *val, u8 size);
 388 #endif
 389 #ifndef platform_pci_legacy_write
 390 # define platform_pci_legacy_write      ia64_pci_legacy_write
 391 extern int ia64_pci_legacy_write(struct pci_bus *bus, u16 port, u32 val, u8 size);
 392 #endif
 393 #ifndef platform_inb
 394 # define platform_inb           __ia64_inb
 395 #endif
 396 #ifndef platform_inw
 397 # define platform_inw           __ia64_inw
 398 #endif
 399 #ifndef platform_inl
 400 # define platform_inl           __ia64_inl
 401 #endif
 402 #ifndef platform_outb
 403 # define platform_outb          __ia64_outb
 404 #endif
 405 #ifndef platform_outw
 406 # define platform_outw          __ia64_outw
 407 #endif
 408 #ifndef platform_outl
 409 # define platform_outl          __ia64_outl
 410 #endif
 411 #ifndef platform_mmiowb
 412 # define platform_mmiowb        __ia64_mmiowb
 413 #endif
 414 #ifndef platform_readb
 415 # define platform_readb         __ia64_readb
 416 #endif
 417 #ifndef platform_readw
 418 # define platform_readw         __ia64_readw
 419 #endif
 420 #ifndef platform_readl
 421 # define platform_readl         __ia64_readl
 422 #endif
 423 #ifndef platform_readq
 424 # define platform_readq         __ia64_readq
 425 #endif
 426 #ifndef platform_readb_relaxed
 427 # define platform_readb_relaxed __ia64_readb_relaxed
 428 #endif
 429 #ifndef platform_readw_relaxed
 430 # define platform_readw_relaxed __ia64_readw_relaxed
 431 #endif
 432 #ifndef platform_readl_relaxed
 433 # define platform_readl_relaxed __ia64_readl_relaxed
 434 #endif
 435 #ifndef platform_readq_relaxed
 436 # define platform_readq_relaxed __ia64_readq_relaxed
 437 #endif
 438 #ifndef platform_migrate
 439 # define platform_migrate machvec_noop_task
 440 #endif
 441 #ifndef platform_setup_msi_irq
 442 # define platform_setup_msi_irq         ((ia64_mv_setup_msi_irq_t*)NULL)
 443 #endif
 444 #ifndef platform_teardown_msi_irq
 445 # define platform_teardown_msi_irq      ((ia64_mv_teardown_msi_irq_t*)NULL)
 446 #endif
 447 #ifndef platform_pci_fixup_bus
 448 # define platform_pci_fixup_bus machvec_noop_bus
 449 #endif
 450
 451 #endif /* _ASM_IA64_MACHVEC_H */