[mirror_ubuntu-artful-kernel.git] / include / xen / xen-ops.h

#ifndef INCLUDE_XEN_OPS_H
#define INCLUDE_XEN_OPS_H

#include <linux/percpu.h>
#include <linux/notifier.h>
#include <linux/efi.h>
#include <asm/xen/interface.h>
#include <xen/interface/vcpu.h>

DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);

DECLARE_PER_CPU(uint32_t, xen_vcpu_id);
static inline uint32_t xen_vcpu_nr(int cpu)
{
	return per_cpu(xen_vcpu_id, cpu);
}

#define XEN_VCPU_ID_INVALID U32_MAX

void xen_arch_pre_suspend(void);
void xen_arch_post_suspend(int suspend_cancelled);

void xen_timer_resume(void);
void xen_arch_resume(void);
void xen_arch_suspend(void);

void xen_reboot(int reason);

void xen_resume_notifier_register(struct notifier_block *nb);
void xen_resume_notifier_unregister(struct notifier_block *nb);

bool xen_vcpu_stolen(int vcpu);
void xen_setup_runstate_info(int cpu);
void xen_time_setup_guest(void);
void xen_get_runstate_snapshot(struct vcpu_runstate_info *res);
u64 xen_steal_clock(int cpu);

int xen_setup_shutdown_event(void);

extern unsigned long *xen_contiguous_bitmap;

#ifdef CONFIG_XEN_PV
int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
				unsigned int address_bits,
				dma_addr_t *dma_handle);

void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order);
#else
static inline int xen_create_contiguous_region(phys_addr_t pstart,
					       unsigned int order,
					       unsigned int address_bits,
					       dma_addr_t *dma_handle)
{
	return 0;
}

static inline void xen_destroy_contiguous_region(phys_addr_t pstart,
						 unsigned int order) { }
#endif

struct vm_area_struct;

/*
 * xen_remap_domain_gfn_array() - map an array of foreign frames
 * @vma:     VMA to map the pages into
 * @addr:    Address at which to map the pages
 * @gfn:     Array of GFNs to map
 * @nr:      Number entries in the GFN array
 * @err_ptr: Returns per-GFN error status.
 * @prot:    page protection mask
 * @domid:   Domain owning the pages
 * @pages:   Array of pages if this domain has an auto-translated physmap
 *
 * @gfn and @err_ptr may point to the same buffer, the GFNs will be
 * overwritten by the error codes after they are mapped.
 *
 * Returns the number of successfully mapped frames, or a -ve error
 * code.
 */
int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
			       unsigned long addr,
			       xen_pfn_t *gfn, int nr,
			       int *err_ptr, pgprot_t prot,
			       unsigned domid,
			       struct page **pages);

/* xen_remap_domain_gfn_range() - map a range of foreign frames
 * @vma:     VMA to map the pages into
 * @addr:    Address at which to map the pages
 * @gfn:     First GFN to map.
 * @nr:      Number frames to map
 * @prot:    page protection mask
 * @domid:   Domain owning the pages
 * @pages:   Array of pages if this domain has an auto-translated physmap
 *
 * Returns the number of successfully mapped frames, or a -ve error
 * code.
 */
int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
			       unsigned long addr,
			       xen_pfn_t gfn, int nr,
			       pgprot_t prot, unsigned domid,
			       struct page **pages);
int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
			       int numpgs, struct page **pages);
int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
			      unsigned long addr,
			      xen_pfn_t *gfn, int nr,
			      int *err_ptr, pgprot_t prot,
			      unsigned domid,
			      struct page **pages);
int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
			      int nr, struct page **pages);
int xen_xlate_map_ballooned_pages(xen_pfn_t **pfns, void **vaddr,
				  unsigned long nr_grant_frames);

bool xen_running_on_version_or_later(unsigned int major, unsigned int minor);

efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc);
efi_status_t xen_efi_set_time(efi_time_t *tm);
efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending,
				     efi_time_t *tm);
efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm);
efi_status_t xen_efi_get_variable(efi_char16_t *name, efi_guid_t *vendor,
				  u32 *attr, unsigned long *data_size,
				  void *data);
efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
				       efi_char16_t *name, efi_guid_t *vendor);
efi_status_t xen_efi_set_variable(efi_char16_t *name, efi_guid_t *vendor,
				  u32 attr, unsigned long data_size,
				  void *data);
efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space,
					 u64 *remaining_space,
					 u64 *max_variable_size);
efi_status_t xen_efi_get_next_high_mono_count(u32 *count);
efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
				    unsigned long count, unsigned long sg_list);
efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
					unsigned long count, u64 *max_size,
					int *reset_type);
void xen_efi_reset_system(int reset_type, efi_status_t status,
			  unsigned long data_size, efi_char16_t *data);


#ifdef CONFIG_PREEMPT

static inline void xen_preemptible_hcall_begin(void)
{
}

static inline void xen_preemptible_hcall_end(void)
{
}

#else

DECLARE_PER_CPU(bool, xen_in_preemptible_hcall);

static inline void xen_preemptible_hcall_begin(void)
{
	__this_cpu_write(xen_in_preemptible_hcall, true);
}

static inline void xen_preemptible_hcall_end(void)
{
	__this_cpu_write(xen_in_preemptible_hcall, false);
}

#endif /* CONFIG_PREEMPT */

#endif /* INCLUDE_XEN_OPS_H */
Commit	Line	Data
e04d0d07 IY	1	#ifndef INCLUDE_XEN_OPS_H
	2	#define INCLUDE_XEN_OPS_H
	3
	4	#include <linux/percpu.h>
cd979883	5	#include <linux/notifier.h>
be81c8a1	6	#include <linux/efi.h>
7892f692	7	#include <asm/xen/interface.h>
4ccefbe5	8	#include <xen/interface/vcpu.h>
e04d0d07 IY	9
	10	DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);
	11
55467dea VK	12	DECLARE_PER_CPU(uint32_t, xen_vcpu_id);
55467dea VK	13	static inline uint32_t xen_vcpu_nr(int cpu)
88e957d6 VK	14	{
	15	return per_cpu(xen_vcpu_id, cpu);
	16	}
	17
0b64ffb8 AA	18	#define XEN_VCPU_ID_INVALID U32_MAX
0b64ffb8 AA	19
03c8142b IC	20	void xen_arch_pre_suspend(void);
03c8142b IC	21	void xen_arch_post_suspend(int suspend_cancelled);
0e91398f	22
ad55db9f IY	23	void xen_timer_resume(void);
ad55db9f IY	24	void xen_arch_resume(void);
2b953a5e	25	void xen_arch_suspend(void);
ad55db9f	26
5d9404e1 JG	27	void xen_reboot(int reason);
5d9404e1 JG	28
cd979883 SG	29	void xen_resume_notifier_register(struct notifier_block *nb);
	30	void xen_resume_notifier_unregister(struct notifier_block *nb);
	31
4ccefbe5 SS	32	bool xen_vcpu_stolen(int vcpu);
4ccefbe5 SS	33	void xen_setup_runstate_info(int cpu);
ecb23dc6	34	void xen_time_setup_guest(void);
4ccefbe5	35	void xen_get_runstate_snapshot(struct vcpu_runstate_info *res);
d34c30cc	36	u64 xen_steal_clock(int cpu);
4ccefbe5	37
016b6f5f SS	38	int xen_setup_shutdown_event(void);
016b6f5f SS	39
08bbc9da	40	extern unsigned long *xen_contiguous_bitmap;
16624390 VK	41
16624390 VK	42	#ifdef CONFIG_XEN_PV
1b65c4e5	43	int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
69908907 SS	44	unsigned int address_bits,
69908907 SS	45	dma_addr_t *dma_handle);
08bbc9da	46
1b65c4e5	47	void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order);
16624390 VK	48	#else
	49	static inline int xen_create_contiguous_region(phys_addr_t pstart,
	50	unsigned int order,
	51	unsigned int address_bits,
	52	dma_addr_t *dma_handle)
	53	{
	54	return 0;
	55	}
	56
	57	static inline void xen_destroy_contiguous_region(phys_addr_t pstart,
	58	unsigned int order) { }
	59	#endif
08bbc9da	60
c140d879	61	struct vm_area_struct;
4e8c0c8c DV	62
4e8c0c8c DV	63	/*
a13d7201	64	* xen_remap_domain_gfn_array() - map an array of foreign frames
4e8c0c8c DV	65	* @vma: VMA to map the pages into
	66	* @addr: Address at which to map the pages
	67	* @gfn: Array of GFNs to map
	68	* @nr: Number entries in the GFN array
	69	* @err_ptr: Returns per-GFN error status.
	70	* @prot: page protection mask
	71	* @domid: Domain owning the pages
	72	* @pages: Array of pages if this domain has an auto-translated physmap
	73	*
	74	* @gfn and @err_ptr may point to the same buffer, the GFNs will be
	75	* overwritten by the error codes after they are mapped.
	76	*
	77	* Returns the number of successfully mapped frames, or a -ve error
	78	* code.
	79	*/
a13d7201	80	int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
4e8c0c8c DV	81	unsigned long addr,
	82	xen_pfn_t *gfn, int nr,
	83	int *err_ptr, pgprot_t prot,
	84	unsigned domid,
	85	struct page **pages);
	86
a13d7201	87	/* xen_remap_domain_gfn_range() - map a range of foreign frames
4e8c0c8c DV	88	* @vma: VMA to map the pages into
	89	* @addr: Address at which to map the pages
	90	* @gfn: First GFN to map.
	91	* @nr: Number frames to map
	92	* @prot: page protection mask
	93	* @domid: Domain owning the pages
	94	* @pages: Array of pages if this domain has an auto-translated physmap
	95	*
	96	* Returns the number of successfully mapped frames, or a -ve error
	97	* code.
	98	*/
a13d7201	99	int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
de1ef206	100	unsigned long addr,
4e8c0c8c	101	xen_pfn_t gfn, int nr,
9a032e39 IC	102	pgprot_t prot, unsigned domid,
9a032e39 IC	103	struct page **pages);
a13d7201	104	int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
9a032e39	105	int numpgs, struct page **pages);
4e8c0c8c	106	int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
628c28ee	107	unsigned long addr,
4e8c0c8c DV	108	xen_pfn_t *gfn, int nr,
4e8c0c8c DV	109	int *err_ptr, pgprot_t prot,
628c28ee DV	110	unsigned domid,
	111	struct page **pages);
	112	int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
	113	int nr, struct page **pages);
243848fc SZ	114	int xen_xlate_map_ballooned_pages(xen_pfn_t pfns, void vaddr,
243848fc SZ	115	unsigned long nr_grant_frames);
de1ef206	116
394b40f6	117	bool xen_running_on_version_or_later(unsigned int major, unsigned int minor);
be81c8a1	118
a62ed500 SZ	119	efi_status_t xen_efi_get_time(efi_time_t tm, efi_time_cap_t tc);
	120	efi_status_t xen_efi_set_time(efi_time_t *tm);
	121	efi_status_t xen_efi_get_wakeup_time(efi_bool_t enabled, efi_bool_t pending,
	122	efi_time_t *tm);
	123	efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm);
	124	efi_status_t xen_efi_get_variable(efi_char16_t name, efi_guid_t vendor,
	125	u32 attr, unsigned long data_size,
	126	void *data);
	127	efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
	128	efi_char16_t name, efi_guid_t vendor);
	129	efi_status_t xen_efi_set_variable(efi_char16_t name, efi_guid_t vendor,
	130	u32 attr, unsigned long data_size,
	131	void *data);
	132	efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space,
	133	u64 *remaining_space,
	134	u64 *max_variable_size);
	135	efi_status_t xen_efi_get_next_high_mono_count(u32 *count);
	136	efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
	137	unsigned long count, unsigned long sg_list);
	138	efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
	139	unsigned long count, u64 *max_size,
	140	int *reset_type);
e371fd76 JG	141	void xen_efi_reset_system(int reset_type, efi_status_t status,
	142	unsigned long data_size, efi_char16_t *data);
	143
be81c8a1	144
fdfd811d DV	145	#ifdef CONFIG_PREEMPT
	146
	147	static inline void xen_preemptible_hcall_begin(void)
	148	{
	149	}
	150
	151	static inline void xen_preemptible_hcall_end(void)
	152	{
	153	}
	154
	155	#else
	156
	157	DECLARE_PER_CPU(bool, xen_in_preemptible_hcall);
	158
	159	static inline void xen_preemptible_hcall_begin(void)
	160	{
	161	__this_cpu_write(xen_in_preemptible_hcall, true);
	162	}
	163
	164	static inline void xen_preemptible_hcall_end(void)
	165	{
	166	__this_cpu_write(xen_in_preemptible_hcall, false);
	167	}
	168
	169	#endif /* CONFIG_PREEMPT */
	170
e04d0d07	171	#endif /* INCLUDE_XEN_OPS_H */