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-rw-r--r--arch/arm/include/asm/xen/events.h18
-rw-r--r--arch/arm/include/asm/xen/hypercall.h69
-rw-r--r--arch/arm/include/asm/xen/hypervisor.h19
-rw-r--r--arch/arm/include/asm/xen/interface.h73
-rw-r--r--arch/arm/include/asm/xen/page.h82
5 files changed, 261 insertions, 0 deletions
diff --git a/arch/arm/include/asm/xen/events.h b/arch/arm/include/asm/xen/events.h
new file mode 100644
index 000000000000..94b4e9020b02
--- /dev/null
+++ b/arch/arm/include/asm/xen/events.h
@@ -0,0 +1,18 @@
1#ifndef _ASM_ARM_XEN_EVENTS_H
2#define _ASM_ARM_XEN_EVENTS_H
3
4#include <asm/ptrace.h>
5
6enum ipi_vector {
7 XEN_PLACEHOLDER_VECTOR,
8
9 /* Xen IPIs go here */
10 XEN_NR_IPIS,
11};
12
13static inline int xen_irqs_disabled(struct pt_regs *regs)
14{
15 return raw_irqs_disabled_flags(regs->ARM_cpsr);
16}
17
18#endif /* _ASM_ARM_XEN_EVENTS_H */
diff --git a/arch/arm/include/asm/xen/hypercall.h b/arch/arm/include/asm/xen/hypercall.h
new file mode 100644
index 000000000000..8a823253d775
--- /dev/null
+++ b/arch/arm/include/asm/xen/hypercall.h
@@ -0,0 +1,69 @@
1/******************************************************************************
2 * hypercall.h
3 *
4 * Linux-specific hypervisor handling.
5 *
6 * Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Citrix, 2012
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License version 2
10 * as published by the Free Software Foundation; or, when distributed
11 * separately from the Linux kernel or incorporated into other
12 * software packages, subject to the following license:
13 *
14 * Permission is hereby granted, free of charge, to any person obtaining a copy
15 * of this source file (the "Software"), to deal in the Software without
16 * restriction, including without limitation the rights to use, copy, modify,
17 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
18 * and to permit persons to whom the Software is furnished to do so, subject to
19 * the following conditions:
20 *
21 * The above copyright notice and this permission notice shall be included in
22 * all copies or substantial portions of the Software.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
27 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
28 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
29 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
30 * IN THE SOFTWARE.
31 */
32
33#ifndef _ASM_ARM_XEN_HYPERCALL_H
34#define _ASM_ARM_XEN_HYPERCALL_H
35
36#include <xen/interface/xen.h>
37
38long privcmd_call(unsigned call, unsigned long a1,
39 unsigned long a2, unsigned long a3,
40 unsigned long a4, unsigned long a5);
41int HYPERVISOR_xen_version(int cmd, void *arg);
42int HYPERVISOR_console_io(int cmd, int count, char *str);
43int HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count);
44int HYPERVISOR_sched_op(int cmd, void *arg);
45int HYPERVISOR_event_channel_op(int cmd, void *arg);
46unsigned long HYPERVISOR_hvm_op(int op, void *arg);
47int HYPERVISOR_memory_op(unsigned int cmd, void *arg);
48int HYPERVISOR_physdev_op(int cmd, void *arg);
49
50static inline void
51MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va,
52 unsigned int new_val, unsigned long flags)
53{
54 BUG();
55}
56
57static inline void
58MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req,
59 int count, int *success_count, domid_t domid)
60{
61 BUG();
62}
63
64static inline int
65HYPERVISOR_multicall(void *call_list, int nr_calls)
66{
67 BUG();
68}
69#endif /* _ASM_ARM_XEN_HYPERCALL_H */
diff --git a/arch/arm/include/asm/xen/hypervisor.h b/arch/arm/include/asm/xen/hypervisor.h
new file mode 100644
index 000000000000..d7ab99a0c9eb
--- /dev/null
+++ b/arch/arm/include/asm/xen/hypervisor.h
@@ -0,0 +1,19 @@
1#ifndef _ASM_ARM_XEN_HYPERVISOR_H
2#define _ASM_ARM_XEN_HYPERVISOR_H
3
4extern struct shared_info *HYPERVISOR_shared_info;
5extern struct start_info *xen_start_info;
6
7/* Lazy mode for batching updates / context switch */
8enum paravirt_lazy_mode {
9 PARAVIRT_LAZY_NONE,
10 PARAVIRT_LAZY_MMU,
11 PARAVIRT_LAZY_CPU,
12};
13
14static inline enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
15{
16 return PARAVIRT_LAZY_NONE;
17}
18
19#endif /* _ASM_ARM_XEN_HYPERVISOR_H */
diff --git a/arch/arm/include/asm/xen/interface.h b/arch/arm/include/asm/xen/interface.h
new file mode 100644
index 000000000000..ae05e56dd17d
--- /dev/null
+++ b/arch/arm/include/asm/xen/interface.h
@@ -0,0 +1,73 @@
1/******************************************************************************
2 * Guest OS interface to ARM Xen.
3 *
4 * Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Citrix, 2012
5 */
6
7#ifndef _ASM_ARM_XEN_INTERFACE_H
8#define _ASM_ARM_XEN_INTERFACE_H
9
10#include <linux/types.h>
11
12#define uint64_aligned_t uint64_t __attribute__((aligned(8)))
13
14#define __DEFINE_GUEST_HANDLE(name, type) \
15 typedef struct { union { type *p; uint64_aligned_t q; }; } \
16 __guest_handle_ ## name
17
18#define DEFINE_GUEST_HANDLE_STRUCT(name) \
19 __DEFINE_GUEST_HANDLE(name, struct name)
20#define DEFINE_GUEST_HANDLE(name) __DEFINE_GUEST_HANDLE(name, name)
21#define GUEST_HANDLE(name) __guest_handle_ ## name
22
23#define set_xen_guest_handle(hnd, val) \
24 do { \
25 if (sizeof(hnd) == 8) \
26 *(uint64_t *)&(hnd) = 0; \
27 (hnd).p = val; \
28 } while (0)
29
30#ifndef __ASSEMBLY__
31/* Explicitly size integers that represent pfns in the interface with
32 * Xen so that we can have one ABI that works for 32 and 64 bit guests. */
33typedef uint64_t xen_pfn_t;
34typedef uint64_t xen_ulong_t;
35/* Guest handles for primitive C types. */
36__DEFINE_GUEST_HANDLE(uchar, unsigned char);
37__DEFINE_GUEST_HANDLE(uint, unsigned int);
38__DEFINE_GUEST_HANDLE(ulong, unsigned long);
39DEFINE_GUEST_HANDLE(char);
40DEFINE_GUEST_HANDLE(int);
41DEFINE_GUEST_HANDLE(long);
42DEFINE_GUEST_HANDLE(void);
43DEFINE_GUEST_HANDLE(uint64_t);
44DEFINE_GUEST_HANDLE(uint32_t);
45DEFINE_GUEST_HANDLE(xen_pfn_t);
46
47/* Maximum number of virtual CPUs in multi-processor guests. */
48#define MAX_VIRT_CPUS 1
49
50struct arch_vcpu_info { };
51struct arch_shared_info { };
52
53/* TODO: Move pvclock definitions some place arch independent */
54struct pvclock_vcpu_time_info {
55 u32 version;
56 u32 pad0;
57 u64 tsc_timestamp;
58 u64 system_time;
59 u32 tsc_to_system_mul;
60 s8 tsc_shift;
61 u8 flags;
62 u8 pad[2];
63} __attribute__((__packed__)); /* 32 bytes */
64
65/* It is OK to have a 12 bytes struct with no padding because it is packed */
66struct pvclock_wall_clock {
67 u32 version;
68 u32 sec;
69 u32 nsec;
70} __attribute__((__packed__));
71#endif
72
73#endif /* _ASM_ARM_XEN_INTERFACE_H */
diff --git a/arch/arm/include/asm/xen/page.h b/arch/arm/include/asm/xen/page.h
new file mode 100644
index 000000000000..174202318dff
--- /dev/null
+++ b/arch/arm/include/asm/xen/page.h
@@ -0,0 +1,82 @@
1#ifndef _ASM_ARM_XEN_PAGE_H
2#define _ASM_ARM_XEN_PAGE_H
3
4#include <asm/page.h>
5#include <asm/pgtable.h>
6
7#include <linux/pfn.h>
8#include <linux/types.h>
9
10#include <xen/interface/grant_table.h>
11
12#define pfn_to_mfn(pfn) (pfn)
13#define phys_to_machine_mapping_valid (1)
14#define mfn_to_pfn(mfn) (mfn)
15#define mfn_to_virt(m) (__va(mfn_to_pfn(m) << PAGE_SHIFT))
16
17#define pte_mfn pte_pfn
18#define mfn_pte pfn_pte
19
20/* Xen machine address */
21typedef struct xmaddr {
22 phys_addr_t maddr;
23} xmaddr_t;
24
25/* Xen pseudo-physical address */
26typedef struct xpaddr {
27 phys_addr_t paddr;
28} xpaddr_t;
29
30#define XMADDR(x) ((xmaddr_t) { .maddr = (x) })
31#define XPADDR(x) ((xpaddr_t) { .paddr = (x) })
32
33static inline xmaddr_t phys_to_machine(xpaddr_t phys)
34{
35 unsigned offset = phys.paddr & ~PAGE_MASK;
36 return XMADDR(PFN_PHYS(pfn_to_mfn(PFN_DOWN(phys.paddr))) | offset);
37}
38
39static inline xpaddr_t machine_to_phys(xmaddr_t machine)
40{
41 unsigned offset = machine.maddr & ~PAGE_MASK;
42 return XPADDR(PFN_PHYS(mfn_to_pfn(PFN_DOWN(machine.maddr))) | offset);
43}
44/* VIRT <-> MACHINE conversion */
45#define virt_to_machine(v) (phys_to_machine(XPADDR(__pa(v))))
46#define virt_to_pfn(v) (PFN_DOWN(__pa(v)))
47#define virt_to_mfn(v) (pfn_to_mfn(virt_to_pfn(v)))
48#define mfn_to_virt(m) (__va(mfn_to_pfn(m) << PAGE_SHIFT))
49
50static inline xmaddr_t arbitrary_virt_to_machine(void *vaddr)
51{
52 /* TODO: assuming it is mapped in the kernel 1:1 */
53 return virt_to_machine(vaddr);
54}
55
56/* TODO: this shouldn't be here but it is because the frontend drivers
57 * are using it (its rolled in headers) even though we won't hit the code path.
58 * So for right now just punt with this.
59 */
60static inline pte_t *lookup_address(unsigned long address, unsigned int *level)
61{
62 BUG();
63 return NULL;
64}
65
66static inline int m2p_add_override(unsigned long mfn, struct page *page,
67 struct gnttab_map_grant_ref *kmap_op)
68{
69 return 0;
70}
71
72static inline int m2p_remove_override(struct page *page, bool clear_pte)
73{
74 return 0;
75}
76
77static inline bool set_phys_to_machine(unsigned long pfn, unsigned long mfn)
78{
79 BUG();
80 return false;
81}
82#endif /* _ASM_ARM_XEN_PAGE_H */
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-13 22:07:01 -0500