Pull vtd-iommu into release branch
[linux-2.6.git] / arch / ia64 / include / asm / machvec.h
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 struct msi_desc;
25 struct dma_attrs;
26
27 typedef void ia64_mv_setup_t (char **);
28 typedef void ia64_mv_cpu_init_t (void);
29 typedef void ia64_mv_irq_init_t (void);
30 typedef void ia64_mv_send_ipi_t (int, int, int, int);
31 typedef void ia64_mv_timer_interrupt_t (int, void *);
32 typedef void ia64_mv_global_tlb_purge_t (struct mm_struct *, unsigned long, unsigned long, unsigned long);
33 typedef void ia64_mv_tlb_migrate_finish_t (struct mm_struct *);
34 typedef u8 ia64_mv_irq_to_vector (int);
35 typedef unsigned int ia64_mv_local_vector_to_irq (u8);
36 typedef char *ia64_mv_pci_get_legacy_mem_t (struct pci_bus *);
37 typedef int ia64_mv_pci_legacy_read_t (struct pci_bus *, u16 port, u32 *val,
38                                        u8 size);
39 typedef int ia64_mv_pci_legacy_write_t (struct pci_bus *, u16 port, u32 val,
40                                         u8 size);
41 typedef void ia64_mv_migrate_t(struct task_struct * task);
42 typedef void ia64_mv_pci_fixup_bus_t (struct pci_bus *);
43 typedef void ia64_mv_kernel_launch_event_t(void);
44
45 /* DMA-mapping interface: */
46 typedef void ia64_mv_dma_init (void);
47 typedef void *ia64_mv_dma_alloc_coherent (struct device *, size_t, dma_addr_t *, gfp_t);
48 typedef void ia64_mv_dma_free_coherent (struct device *, size_t, void *, dma_addr_t);
49 typedef dma_addr_t ia64_mv_dma_map_single (struct device *, void *, size_t, int);
50 typedef void ia64_mv_dma_unmap_single (struct device *, dma_addr_t, size_t, int);
51 typedef int ia64_mv_dma_map_sg (struct device *, struct scatterlist *, int, int);
52 typedef void ia64_mv_dma_unmap_sg (struct device *, struct scatterlist *, int, int);
53 typedef void ia64_mv_dma_sync_single_for_cpu (struct device *, dma_addr_t, size_t, int);
54 typedef void ia64_mv_dma_sync_sg_for_cpu (struct device *, struct scatterlist *, int, int);
55 typedef void ia64_mv_dma_sync_single_for_device (struct device *, dma_addr_t, size_t, int);
56 typedef void ia64_mv_dma_sync_sg_for_device (struct device *, struct scatterlist *, int, int);
57 typedef int ia64_mv_dma_mapping_error(struct device *, dma_addr_t dma_addr);
58 typedef int ia64_mv_dma_supported (struct device *, u64);
59
60 typedef dma_addr_t ia64_mv_dma_map_single_attrs (struct device *, void *, size_t, int, struct dma_attrs *);
61 typedef void ia64_mv_dma_unmap_single_attrs (struct device *, dma_addr_t, size_t, int, struct dma_attrs *);
62 typedef int ia64_mv_dma_map_sg_attrs (struct device *, struct scatterlist *, int, int, struct dma_attrs *);
63 typedef void ia64_mv_dma_unmap_sg_attrs (struct device *, struct scatterlist *, int, int, struct dma_attrs *);
64
65 /*
66  * WARNING: The legacy I/O space is _architected_.  Platforms are
67  * expected to follow this architected model (see Section 10.7 in the
68  * IA-64 Architecture Software Developer's Manual).  Unfortunately,
69  * some broken machines do not follow that model, which is why we have
70  * to make the inX/outX operations part of the machine vector.
71  * Platform designers should follow the architected model whenever
72  * possible.
73  */
74 typedef unsigned int ia64_mv_inb_t (unsigned long);
75 typedef unsigned int ia64_mv_inw_t (unsigned long);
76 typedef unsigned int ia64_mv_inl_t (unsigned long);
77 typedef void ia64_mv_outb_t (unsigned char, unsigned long);
78 typedef void ia64_mv_outw_t (unsigned short, unsigned long);
79 typedef void ia64_mv_outl_t (unsigned int, unsigned long);
80 typedef void ia64_mv_mmiowb_t (void);
81 typedef unsigned char ia64_mv_readb_t (const volatile void __iomem *);
82 typedef unsigned short ia64_mv_readw_t (const volatile void __iomem *);
83 typedef unsigned int ia64_mv_readl_t (const volatile void __iomem *);
84 typedef unsigned long ia64_mv_readq_t (const volatile void __iomem *);
85 typedef unsigned char ia64_mv_readb_relaxed_t (const volatile void __iomem *);
86 typedef unsigned short ia64_mv_readw_relaxed_t (const volatile void __iomem *);
87 typedef unsigned int ia64_mv_readl_relaxed_t (const volatile void __iomem *);
88 typedef unsigned long ia64_mv_readq_relaxed_t (const volatile void __iomem *);
89
90 typedef int ia64_mv_setup_msi_irq_t (struct pci_dev *pdev, struct msi_desc *);
91 typedef void ia64_mv_teardown_msi_irq_t (unsigned int irq);
92
93 static inline void
94 machvec_noop (void)
95 {
96 }
97
98 static inline void
99 machvec_noop_mm (struct mm_struct *mm)
100 {
101 }
102
103 static inline void
104 machvec_noop_task (struct task_struct *task)
105 {
106 }
107
108 static inline void
109 machvec_noop_bus (struct pci_bus *bus)
110 {
111 }
112
113 extern void machvec_setup (char **);
114 extern void machvec_timer_interrupt (int, void *);
115 extern void machvec_dma_sync_single (struct device *, dma_addr_t, size_t, int);
116 extern void machvec_dma_sync_sg (struct device *, struct scatterlist *, int, int);
117 extern void machvec_tlb_migrate_finish (struct mm_struct *);
118
119 # if defined (CONFIG_IA64_HP_SIM)
120 #  include <asm/machvec_hpsim.h>
121 # elif defined (CONFIG_IA64_DIG)
122 #  include <asm/machvec_dig.h>
123 # elif defined(CONFIG_IA64_DIG_VTD)
124 #  include <asm/machvec_dig_vtd.h>
125 # elif defined (CONFIG_IA64_HP_ZX1)
126 #  include <asm/machvec_hpzx1.h>
127 # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
128 #  include <asm/machvec_hpzx1_swiotlb.h>
129 # elif defined (CONFIG_IA64_SGI_SN2)
130 #  include <asm/machvec_sn2.h>
131 # elif defined (CONFIG_IA64_SGI_UV)
132 #  include <asm/machvec_uv.h>
133 # elif defined (CONFIG_IA64_XEN_GUEST)
134 #  include <asm/machvec_xen.h>
135 # elif defined (CONFIG_IA64_GENERIC)
136
137 # ifdef MACHVEC_PLATFORM_HEADER
138 #  include MACHVEC_PLATFORM_HEADER
139 # else
140 #  define platform_name         ia64_mv.name
141 #  define platform_setup        ia64_mv.setup
142 #  define platform_cpu_init     ia64_mv.cpu_init
143 #  define platform_irq_init     ia64_mv.irq_init
144 #  define platform_send_ipi     ia64_mv.send_ipi
145 #  define platform_timer_interrupt      ia64_mv.timer_interrupt
146 #  define platform_global_tlb_purge     ia64_mv.global_tlb_purge
147 #  define platform_tlb_migrate_finish   ia64_mv.tlb_migrate_finish
148 #  define platform_dma_init             ia64_mv.dma_init
149 #  define platform_dma_alloc_coherent   ia64_mv.dma_alloc_coherent
150 #  define platform_dma_free_coherent    ia64_mv.dma_free_coherent
151 #  define platform_dma_map_single_attrs ia64_mv.dma_map_single_attrs
152 #  define platform_dma_unmap_single_attrs       ia64_mv.dma_unmap_single_attrs
153 #  define platform_dma_map_sg_attrs     ia64_mv.dma_map_sg_attrs
154 #  define platform_dma_unmap_sg_attrs   ia64_mv.dma_unmap_sg_attrs
155 #  define platform_dma_sync_single_for_cpu ia64_mv.dma_sync_single_for_cpu
156 #  define platform_dma_sync_sg_for_cpu  ia64_mv.dma_sync_sg_for_cpu
157 #  define platform_dma_sync_single_for_device ia64_mv.dma_sync_single_for_device
158 #  define platform_dma_sync_sg_for_device ia64_mv.dma_sync_sg_for_device
159 #  define platform_dma_mapping_error            ia64_mv.dma_mapping_error
160 #  define platform_dma_supported        ia64_mv.dma_supported
161 #  define platform_irq_to_vector        ia64_mv.irq_to_vector
162 #  define platform_local_vector_to_irq  ia64_mv.local_vector_to_irq
163 #  define platform_pci_get_legacy_mem   ia64_mv.pci_get_legacy_mem
164 #  define platform_pci_legacy_read      ia64_mv.pci_legacy_read
165 #  define platform_pci_legacy_write     ia64_mv.pci_legacy_write
166 #  define platform_inb          ia64_mv.inb
167 #  define platform_inw          ia64_mv.inw
168 #  define platform_inl          ia64_mv.inl
169 #  define platform_outb         ia64_mv.outb
170 #  define platform_outw         ia64_mv.outw
171 #  define platform_outl         ia64_mv.outl
172 #  define platform_mmiowb       ia64_mv.mmiowb
173 #  define platform_readb        ia64_mv.readb
174 #  define platform_readw        ia64_mv.readw
175 #  define platform_readl        ia64_mv.readl
176 #  define platform_readq        ia64_mv.readq
177 #  define platform_readb_relaxed        ia64_mv.readb_relaxed
178 #  define platform_readw_relaxed        ia64_mv.readw_relaxed
179 #  define platform_readl_relaxed        ia64_mv.readl_relaxed
180 #  define platform_readq_relaxed        ia64_mv.readq_relaxed
181 #  define platform_migrate              ia64_mv.migrate
182 #  define platform_setup_msi_irq        ia64_mv.setup_msi_irq
183 #  define platform_teardown_msi_irq     ia64_mv.teardown_msi_irq
184 #  define platform_pci_fixup_bus        ia64_mv.pci_fixup_bus
185 #  define platform_kernel_launch_event  ia64_mv.kernel_launch_event
186 # endif
187
188 /* __attribute__((__aligned__(16))) is required to make size of the
189  * structure multiple of 16 bytes.
190  * This will fillup the holes created because of section 3.3.1 in
191  * Software Conventions guide.
192  */
193 struct ia64_machine_vector {
194         const char *name;
195         ia64_mv_setup_t *setup;
196         ia64_mv_cpu_init_t *cpu_init;
197         ia64_mv_irq_init_t *irq_init;
198         ia64_mv_send_ipi_t *send_ipi;
199         ia64_mv_timer_interrupt_t *timer_interrupt;
200         ia64_mv_global_tlb_purge_t *global_tlb_purge;
201         ia64_mv_tlb_migrate_finish_t *tlb_migrate_finish;
202         ia64_mv_dma_init *dma_init;
203         ia64_mv_dma_alloc_coherent *dma_alloc_coherent;
204         ia64_mv_dma_free_coherent *dma_free_coherent;
205         ia64_mv_dma_map_single_attrs *dma_map_single_attrs;
206         ia64_mv_dma_unmap_single_attrs *dma_unmap_single_attrs;
207         ia64_mv_dma_map_sg_attrs *dma_map_sg_attrs;
208         ia64_mv_dma_unmap_sg_attrs *dma_unmap_sg_attrs;
209         ia64_mv_dma_sync_single_for_cpu *dma_sync_single_for_cpu;
210         ia64_mv_dma_sync_sg_for_cpu *dma_sync_sg_for_cpu;
211         ia64_mv_dma_sync_single_for_device *dma_sync_single_for_device;
212         ia64_mv_dma_sync_sg_for_device *dma_sync_sg_for_device;
213         ia64_mv_dma_mapping_error *dma_mapping_error;
214         ia64_mv_dma_supported *dma_supported;
215         ia64_mv_irq_to_vector *irq_to_vector;
216         ia64_mv_local_vector_to_irq *local_vector_to_irq;
217         ia64_mv_pci_get_legacy_mem_t *pci_get_legacy_mem;
218         ia64_mv_pci_legacy_read_t *pci_legacy_read;
219         ia64_mv_pci_legacy_write_t *pci_legacy_write;
220         ia64_mv_inb_t *inb;
221         ia64_mv_inw_t *inw;
222         ia64_mv_inl_t *inl;
223         ia64_mv_outb_t *outb;
224         ia64_mv_outw_t *outw;
225         ia64_mv_outl_t *outl;
226         ia64_mv_mmiowb_t *mmiowb;
227         ia64_mv_readb_t *readb;
228         ia64_mv_readw_t *readw;
229         ia64_mv_readl_t *readl;
230         ia64_mv_readq_t *readq;
231         ia64_mv_readb_relaxed_t *readb_relaxed;
232         ia64_mv_readw_relaxed_t *readw_relaxed;
233         ia64_mv_readl_relaxed_t *readl_relaxed;
234         ia64_mv_readq_relaxed_t *readq_relaxed;
235         ia64_mv_migrate_t *migrate;
236         ia64_mv_setup_msi_irq_t *setup_msi_irq;
237         ia64_mv_teardown_msi_irq_t *teardown_msi_irq;
238         ia64_mv_pci_fixup_bus_t *pci_fixup_bus;
239         ia64_mv_kernel_launch_event_t *kernel_launch_event;
240 } __attribute__((__aligned__(16))); /* align attrib? see above comment */
241
242 #define MACHVEC_INIT(name)                      \
243 {                                               \
244         #name,                                  \
245         platform_setup,                         \
246         platform_cpu_init,                      \
247         platform_irq_init,                      \
248         platform_send_ipi,                      \
249         platform_timer_interrupt,               \
250         platform_global_tlb_purge,              \
251         platform_tlb_migrate_finish,            \
252         platform_dma_init,                      \
253         platform_dma_alloc_coherent,            \
254         platform_dma_free_coherent,             \
255         platform_dma_map_single_attrs,          \
256         platform_dma_unmap_single_attrs,        \
257         platform_dma_map_sg_attrs,              \
258         platform_dma_unmap_sg_attrs,            \
259         platform_dma_sync_single_for_cpu,       \
260         platform_dma_sync_sg_for_cpu,           \
261         platform_dma_sync_single_for_device,    \
262         platform_dma_sync_sg_for_device,        \
263         platform_dma_mapping_error,                     \
264         platform_dma_supported,                 \
265         platform_irq_to_vector,                 \
266         platform_local_vector_to_irq,           \
267         platform_pci_get_legacy_mem,            \
268         platform_pci_legacy_read,               \
269         platform_pci_legacy_write,              \
270         platform_inb,                           \
271         platform_inw,                           \
272         platform_inl,                           \
273         platform_outb,                          \
274         platform_outw,                          \
275         platform_outl,                          \
276         platform_mmiowb,                        \
277         platform_readb,                         \
278         platform_readw,                         \
279         platform_readl,                         \
280         platform_readq,                         \
281         platform_readb_relaxed,                 \
282         platform_readw_relaxed,                 \
283         platform_readl_relaxed,                 \
284         platform_readq_relaxed,                 \
285         platform_migrate,                       \
286         platform_setup_msi_irq,                 \
287         platform_teardown_msi_irq,              \
288         platform_pci_fixup_bus,                 \
289         platform_kernel_launch_event            \
290 }
291
292 extern struct ia64_machine_vector ia64_mv;
293 extern void machvec_init (const char *name);
294 extern void machvec_init_from_cmdline(const char *cmdline);
295
296 # else
297 #  error Unknown configuration.  Update arch/ia64/include/asm/machvec.h.
298 # endif /* CONFIG_IA64_GENERIC */
299
300 /*
301  * Declare default routines which aren't declared anywhere else:
302  */
303 extern ia64_mv_dma_init                 swiotlb_init;
304 extern ia64_mv_dma_alloc_coherent       swiotlb_alloc_coherent;
305 extern ia64_mv_dma_free_coherent        swiotlb_free_coherent;
306 extern ia64_mv_dma_map_single           swiotlb_map_single;
307 extern ia64_mv_dma_map_single_attrs     swiotlb_map_single_attrs;
308 extern ia64_mv_dma_unmap_single         swiotlb_unmap_single;
309 extern ia64_mv_dma_unmap_single_attrs   swiotlb_unmap_single_attrs;
310 extern ia64_mv_dma_map_sg               swiotlb_map_sg;
311 extern ia64_mv_dma_map_sg_attrs         swiotlb_map_sg_attrs;
312 extern ia64_mv_dma_unmap_sg             swiotlb_unmap_sg;
313 extern ia64_mv_dma_unmap_sg_attrs       swiotlb_unmap_sg_attrs;
314 extern ia64_mv_dma_sync_single_for_cpu  swiotlb_sync_single_for_cpu;
315 extern ia64_mv_dma_sync_sg_for_cpu      swiotlb_sync_sg_for_cpu;
316 extern ia64_mv_dma_sync_single_for_device swiotlb_sync_single_for_device;
317 extern ia64_mv_dma_sync_sg_for_device   swiotlb_sync_sg_for_device;
318 extern ia64_mv_dma_mapping_error        swiotlb_dma_mapping_error;
319 extern ia64_mv_dma_supported            swiotlb_dma_supported;
320
321 /*
322  * Define default versions so we can extend machvec for new platforms without having
323  * to update the machvec files for all existing platforms.
324  */
325 #ifndef platform_setup
326 # define platform_setup                 machvec_setup
327 #endif
328 #ifndef platform_cpu_init
329 # define platform_cpu_init              machvec_noop
330 #endif
331 #ifndef platform_irq_init
332 # define platform_irq_init              machvec_noop
333 #endif
334
335 #ifndef platform_send_ipi
336 # define platform_send_ipi              ia64_send_ipi   /* default to architected version */
337 #endif
338 #ifndef platform_timer_interrupt
339 # define platform_timer_interrupt       machvec_timer_interrupt
340 #endif
341 #ifndef platform_global_tlb_purge
342 # define platform_global_tlb_purge      ia64_global_tlb_purge /* default to architected version */
343 #endif
344 #ifndef platform_tlb_migrate_finish
345 # define platform_tlb_migrate_finish    machvec_noop_mm
346 #endif
347 #ifndef platform_kernel_launch_event
348 # define platform_kernel_launch_event   machvec_noop
349 #endif
350 #ifndef platform_dma_init
351 # define platform_dma_init              swiotlb_init
352 #endif
353 #ifndef platform_dma_alloc_coherent
354 # define platform_dma_alloc_coherent    swiotlb_alloc_coherent
355 #endif
356 #ifndef platform_dma_free_coherent
357 # define platform_dma_free_coherent     swiotlb_free_coherent
358 #endif
359 #ifndef platform_dma_map_single_attrs
360 # define platform_dma_map_single_attrs  swiotlb_map_single_attrs
361 #endif
362 #ifndef platform_dma_unmap_single_attrs
363 # define platform_dma_unmap_single_attrs        swiotlb_unmap_single_attrs
364 #endif
365 #ifndef platform_dma_map_sg_attrs
366 # define platform_dma_map_sg_attrs      swiotlb_map_sg_attrs
367 #endif
368 #ifndef platform_dma_unmap_sg_attrs
369 # define platform_dma_unmap_sg_attrs    swiotlb_unmap_sg_attrs
370 #endif
371 #ifndef platform_dma_sync_single_for_cpu
372 # define platform_dma_sync_single_for_cpu       swiotlb_sync_single_for_cpu
373 #endif
374 #ifndef platform_dma_sync_sg_for_cpu
375 # define platform_dma_sync_sg_for_cpu           swiotlb_sync_sg_for_cpu
376 #endif
377 #ifndef platform_dma_sync_single_for_device
378 # define platform_dma_sync_single_for_device    swiotlb_sync_single_for_device
379 #endif
380 #ifndef platform_dma_sync_sg_for_device
381 # define platform_dma_sync_sg_for_device        swiotlb_sync_sg_for_device
382 #endif
383 #ifndef platform_dma_mapping_error
384 # define platform_dma_mapping_error             swiotlb_dma_mapping_error
385 #endif
386 #ifndef platform_dma_supported
387 # define  platform_dma_supported        swiotlb_dma_supported
388 #endif
389 #ifndef platform_irq_to_vector
390 # define platform_irq_to_vector         __ia64_irq_to_vector
391 #endif
392 #ifndef platform_local_vector_to_irq
393 # define platform_local_vector_to_irq   __ia64_local_vector_to_irq
394 #endif
395 #ifndef platform_pci_get_legacy_mem
396 # define platform_pci_get_legacy_mem    ia64_pci_get_legacy_mem
397 #endif
398 #ifndef platform_pci_legacy_read
399 # define platform_pci_legacy_read       ia64_pci_legacy_read
400 extern int ia64_pci_legacy_read(struct pci_bus *bus, u16 port, u32 *val, u8 size);
401 #endif
402 #ifndef platform_pci_legacy_write
403 # define platform_pci_legacy_write      ia64_pci_legacy_write
404 extern int ia64_pci_legacy_write(struct pci_bus *bus, u16 port, u32 val, u8 size);
405 #endif
406 #ifndef platform_inb
407 # define platform_inb           __ia64_inb
408 #endif
409 #ifndef platform_inw
410 # define platform_inw           __ia64_inw
411 #endif
412 #ifndef platform_inl
413 # define platform_inl           __ia64_inl
414 #endif
415 #ifndef platform_outb
416 # define platform_outb          __ia64_outb
417 #endif
418 #ifndef platform_outw
419 # define platform_outw          __ia64_outw
420 #endif
421 #ifndef platform_outl
422 # define platform_outl          __ia64_outl
423 #endif
424 #ifndef platform_mmiowb
425 # define platform_mmiowb        __ia64_mmiowb
426 #endif
427 #ifndef platform_readb
428 # define platform_readb         __ia64_readb
429 #endif
430 #ifndef platform_readw
431 # define platform_readw         __ia64_readw
432 #endif
433 #ifndef platform_readl
434 # define platform_readl         __ia64_readl
435 #endif
436 #ifndef platform_readq
437 # define platform_readq         __ia64_readq
438 #endif
439 #ifndef platform_readb_relaxed
440 # define platform_readb_relaxed __ia64_readb_relaxed
441 #endif
442 #ifndef platform_readw_relaxed
443 # define platform_readw_relaxed __ia64_readw_relaxed
444 #endif
445 #ifndef platform_readl_relaxed
446 # define platform_readl_relaxed __ia64_readl_relaxed
447 #endif
448 #ifndef platform_readq_relaxed
449 # define platform_readq_relaxed __ia64_readq_relaxed
450 #endif
451 #ifndef platform_migrate
452 # define platform_migrate machvec_noop_task
453 #endif
454 #ifndef platform_setup_msi_irq
455 # define platform_setup_msi_irq         ((ia64_mv_setup_msi_irq_t*)NULL)
456 #endif
457 #ifndef platform_teardown_msi_irq
458 # define platform_teardown_msi_irq      ((ia64_mv_teardown_msi_irq_t*)NULL)
459 #endif
460 #ifndef platform_pci_fixup_bus
461 # define platform_pci_fixup_bus machvec_noop_bus
462 #endif
463
464 #endif /* _ASM_IA64_MACHVEC_H */