arm/arm64: xen: Move shared architecture headers to include/xen/arm
ARM and arm64 Xen ports share a number of headers, leading to packaging issues when these headers needs to be exported, as it breaks the reasonable requirement that an architecture port has self-contained headers. Fix the issue by moving the 5 header files to include/xen/arm, and keep local placeholders to include the relevant files. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
This commit is contained in:
Marc Zyngier
Stefano Stabellini
parent
b36585a0a3
commit
2fbadc3002
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@ -1,87 +1 @@
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/******************************************************************************
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#include <xen/arm/hypercall.h>
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* hypercall.h
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*
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* Linux-specific hypervisor handling.
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*
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* Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Citrix, 2012
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation; or, when distributed
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* separately from the Linux kernel or incorporated into other
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* software packages, subject to the following license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this source file (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy, modify,
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* merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef _ASM_ARM_XEN_HYPERCALL_H
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#define _ASM_ARM_XEN_HYPERCALL_H
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#include <linux/bug.h>
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#include <xen/interface/xen.h>
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#include <xen/interface/sched.h>
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#include <xen/interface/platform.h>
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long privcmd_call(unsigned call, unsigned long a1,
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unsigned long a2, unsigned long a3,
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unsigned long a4, unsigned long a5);
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int HYPERVISOR_xen_version(int cmd, void *arg);
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int HYPERVISOR_console_io(int cmd, int count, char *str);
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int HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count);
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int HYPERVISOR_sched_op(int cmd, void *arg);
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int HYPERVISOR_event_channel_op(int cmd, void *arg);
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unsigned long HYPERVISOR_hvm_op(int op, void *arg);
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int HYPERVISOR_memory_op(unsigned int cmd, void *arg);
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int HYPERVISOR_physdev_op(int cmd, void *arg);
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int HYPERVISOR_vcpu_op(int cmd, int vcpuid, void *extra_args);
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int HYPERVISOR_tmem_op(void *arg);
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int HYPERVISOR_vm_assist(unsigned int cmd, unsigned int type);
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int HYPERVISOR_platform_op_raw(void *arg);
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static inline int HYPERVISOR_platform_op(struct xen_platform_op *op)
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{
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op->interface_version = XENPF_INTERFACE_VERSION;
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return HYPERVISOR_platform_op_raw(op);
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}
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int HYPERVISOR_multicall(struct multicall_entry *calls, uint32_t nr);
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static inline int
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HYPERVISOR_suspend(unsigned long start_info_mfn)
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{
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struct sched_shutdown r = { .reason = SHUTDOWN_suspend };
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/* start_info_mfn is unused on ARM */
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return HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
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}
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static inline void
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MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va,
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unsigned int new_val, unsigned long flags)
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{
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BUG();
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}
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static inline void
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MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req,
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int count, int *success_count, domid_t domid)
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{
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BUG();
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}
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#endif /* _ASM_ARM_XEN_HYPERCALL_H */
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#ifndef _ASM_ARM_XEN_HYPERVISOR_H
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#include <xen/arm/hypervisor.h>
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#define _ASM_ARM_XEN_HYPERVISOR_H
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#include <linux/init.h>
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extern struct shared_info *HYPERVISOR_shared_info;
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extern struct start_info *xen_start_info;
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/* Lazy mode for batching updates / context switch */
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enum paravirt_lazy_mode {
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PARAVIRT_LAZY_NONE,
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PARAVIRT_LAZY_MMU,
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PARAVIRT_LAZY_CPU,
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};
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static inline enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
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{
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return PARAVIRT_LAZY_NONE;
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}
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extern struct dma_map_ops *xen_dma_ops;
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#ifdef CONFIG_XEN
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void __init xen_early_init(void);
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#else
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static inline void xen_early_init(void) { return; }
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#endif
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#ifdef CONFIG_HOTPLUG_CPU
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static inline void xen_arch_register_cpu(int num)
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{
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}
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static inline void xen_arch_unregister_cpu(int num)
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{
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}
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#endif
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#endif /* _ASM_ARM_XEN_HYPERVISOR_H */
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@ -1,85 +1 @@
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/******************************************************************************
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#include <xen/arm/interface.h>
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* Guest OS interface to ARM Xen.
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*
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* Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Citrix, 2012
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*/
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#ifndef _ASM_ARM_XEN_INTERFACE_H
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#define _ASM_ARM_XEN_INTERFACE_H
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#include <linux/types.h>
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#define uint64_aligned_t uint64_t __attribute__((aligned(8)))
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#define __DEFINE_GUEST_HANDLE(name, type) \
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typedef struct { union { type *p; uint64_aligned_t q; }; } \
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__guest_handle_ ## name
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#define DEFINE_GUEST_HANDLE_STRUCT(name) \
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__DEFINE_GUEST_HANDLE(name, struct name)
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#define DEFINE_GUEST_HANDLE(name) __DEFINE_GUEST_HANDLE(name, name)
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#define GUEST_HANDLE(name) __guest_handle_ ## name
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#define set_xen_guest_handle(hnd, val) \
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do { \
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if (sizeof(hnd) == 8) \
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*(uint64_t *)&(hnd) = 0; \
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(hnd).p = val; \
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} while (0)
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#define __HYPERVISOR_platform_op_raw __HYPERVISOR_platform_op
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#ifndef __ASSEMBLY__
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/* Explicitly size integers that represent pfns in the interface with
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* Xen so that we can have one ABI that works for 32 and 64 bit guests.
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* Note that this means that the xen_pfn_t type may be capable of
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* representing pfn's which the guest cannot represent in its own pfn
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* type. However since pfn space is controlled by the guest this is
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* fine since it simply wouldn't be able to create any sure pfns in
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* the first place.
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*/
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typedef uint64_t xen_pfn_t;
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#define PRI_xen_pfn "llx"
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typedef uint64_t xen_ulong_t;
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#define PRI_xen_ulong "llx"
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typedef int64_t xen_long_t;
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#define PRI_xen_long "llx"
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/* Guest handles for primitive C types. */
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__DEFINE_GUEST_HANDLE(uchar, unsigned char);
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__DEFINE_GUEST_HANDLE(uint, unsigned int);
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DEFINE_GUEST_HANDLE(char);
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DEFINE_GUEST_HANDLE(int);
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DEFINE_GUEST_HANDLE(void);
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DEFINE_GUEST_HANDLE(uint64_t);
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DEFINE_GUEST_HANDLE(uint32_t);
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DEFINE_GUEST_HANDLE(xen_pfn_t);
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DEFINE_GUEST_HANDLE(xen_ulong_t);
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/* Maximum number of virtual CPUs in multi-processor guests. */
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#define MAX_VIRT_CPUS 1
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struct arch_vcpu_info { };
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struct arch_shared_info { };
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/* TODO: Move pvclock definitions some place arch independent */
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struct pvclock_vcpu_time_info {
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u32 version;
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u32 pad0;
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u64 tsc_timestamp;
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u64 system_time;
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u32 tsc_to_system_mul;
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s8 tsc_shift;
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u8 flags;
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u8 pad[2];
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} __attribute__((__packed__)); /* 32 bytes */
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/* It is OK to have a 12 bytes struct with no padding because it is packed */
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struct pvclock_wall_clock {
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u32 version;
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u32 sec;
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u32 nsec;
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u32 sec_hi;
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} __attribute__((__packed__));
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#endif
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#endif /* _ASM_ARM_XEN_INTERFACE_H */
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#ifndef _ASM_ARM_XEN_PAGE_COHERENT_H
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#include <xen/arm/page-coherent.h>
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#define _ASM_ARM_XEN_PAGE_COHERENT_H
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#include <asm/page.h>
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#include <linux/dma-mapping.h>
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void __xen_dma_map_page(struct device *hwdev, struct page *page,
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dma_addr_t dev_addr, unsigned long offset, size_t size,
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enum dma_data_direction dir, unsigned long attrs);
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void __xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
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size_t size, enum dma_data_direction dir,
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unsigned long attrs);
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void __xen_dma_sync_single_for_cpu(struct device *hwdev,
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dma_addr_t handle, size_t size, enum dma_data_direction dir);
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void __xen_dma_sync_single_for_device(struct device *hwdev,
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dma_addr_t handle, size_t size, enum dma_data_direction dir);
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static inline void *xen_alloc_coherent_pages(struct device *hwdev, size_t size,
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dma_addr_t *dma_handle, gfp_t flags, unsigned long attrs)
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{
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return __generic_dma_ops(hwdev)->alloc(hwdev, size, dma_handle, flags, attrs);
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}
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static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
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void *cpu_addr, dma_addr_t dma_handle, unsigned long attrs)
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{
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__generic_dma_ops(hwdev)->free(hwdev, size, cpu_addr, dma_handle, attrs);
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}
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static inline void xen_dma_map_page(struct device *hwdev, struct page *page,
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dma_addr_t dev_addr, unsigned long offset, size_t size,
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enum dma_data_direction dir, unsigned long attrs)
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{
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unsigned long page_pfn = page_to_xen_pfn(page);
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unsigned long dev_pfn = XEN_PFN_DOWN(dev_addr);
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unsigned long compound_pages =
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(1<<compound_order(page)) * XEN_PFN_PER_PAGE;
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bool local = (page_pfn <= dev_pfn) &&
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(dev_pfn - page_pfn < compound_pages);
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/*
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* Dom0 is mapped 1:1, while the Linux page can span across
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* multiple Xen pages, it's not possible for it to contain a
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* mix of local and foreign Xen pages. So if the first xen_pfn
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* == mfn the page is local otherwise it's a foreign page
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* grant-mapped in dom0. If the page is local we can safely
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* call the native dma_ops function, otherwise we call the xen
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* specific function.
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*/
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if (local)
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__generic_dma_ops(hwdev)->map_page(hwdev, page, offset, size, dir, attrs);
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else
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__xen_dma_map_page(hwdev, page, dev_addr, offset, size, dir, attrs);
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}
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static inline void xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
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size_t size, enum dma_data_direction dir, unsigned long attrs)
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{
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unsigned long pfn = PFN_DOWN(handle);
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/*
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* Dom0 is mapped 1:1, while the Linux page can be spanned accross
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* multiple Xen page, it's not possible to have a mix of local and
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* foreign Xen page. Dom0 is mapped 1:1, so calling pfn_valid on a
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* foreign mfn will always return false. If the page is local we can
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* safely call the native dma_ops function, otherwise we call the xen
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* specific function.
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*/
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if (pfn_valid(pfn)) {
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if (__generic_dma_ops(hwdev)->unmap_page)
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__generic_dma_ops(hwdev)->unmap_page(hwdev, handle, size, dir, attrs);
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} else
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__xen_dma_unmap_page(hwdev, handle, size, dir, attrs);
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}
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static inline void xen_dma_sync_single_for_cpu(struct device *hwdev,
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dma_addr_t handle, size_t size, enum dma_data_direction dir)
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{
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unsigned long pfn = PFN_DOWN(handle);
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if (pfn_valid(pfn)) {
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if (__generic_dma_ops(hwdev)->sync_single_for_cpu)
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__generic_dma_ops(hwdev)->sync_single_for_cpu(hwdev, handle, size, dir);
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} else
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__xen_dma_sync_single_for_cpu(hwdev, handle, size, dir);
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}
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static inline void xen_dma_sync_single_for_device(struct device *hwdev,
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dma_addr_t handle, size_t size, enum dma_data_direction dir)
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{
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unsigned long pfn = PFN_DOWN(handle);
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if (pfn_valid(pfn)) {
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if (__generic_dma_ops(hwdev)->sync_single_for_device)
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__generic_dma_ops(hwdev)->sync_single_for_device(hwdev, handle, size, dir);
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} else
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__xen_dma_sync_single_for_device(hwdev, handle, size, dir);
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}
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#endif /* _ASM_ARM_XEN_PAGE_COHERENT_H */
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#ifndef _ASM_ARM_XEN_PAGE_H
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#include <xen/arm/page.h>
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#define _ASM_ARM_XEN_PAGE_H
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <linux/pfn.h>
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#include <linux/types.h>
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#include <linux/dma-mapping.h>
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#include <xen/xen.h>
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#include <xen/interface/grant_table.h>
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#define phys_to_machine_mapping_valid(pfn) (1)
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/* Xen machine address */
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typedef struct xmaddr {
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phys_addr_t maddr;
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} xmaddr_t;
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/* Xen pseudo-physical address */
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typedef struct xpaddr {
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phys_addr_t paddr;
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} xpaddr_t;
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#define XMADDR(x) ((xmaddr_t) { .maddr = (x) })
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#define XPADDR(x) ((xpaddr_t) { .paddr = (x) })
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#define INVALID_P2M_ENTRY (~0UL)
|
|
||||||
|
|
||||||
/*
|
|
||||||
* The pseudo-physical frame (pfn) used in all the helpers is always based
|
|
||||||
* on Xen page granularity (i.e 4KB).
|
|
||||||
*
|
|
||||||
* A Linux page may be split across multiple non-contiguous Xen page so we
|
|
||||||
* have to keep track with frame based on 4KB page granularity.
|
|
||||||
*
|
|
||||||
* PV drivers should never make a direct usage of those helpers (particularly
|
|
||||||
* pfn_to_gfn and gfn_to_pfn).
|
|
||||||
*/
|
|
||||||
|
|
||||||
unsigned long __pfn_to_mfn(unsigned long pfn);
|
|
||||||
extern struct rb_root phys_to_mach;
|
|
||||||
|
|
||||||
/* Pseudo-physical <-> Guest conversion */
|
|
||||||
static inline unsigned long pfn_to_gfn(unsigned long pfn)
|
|
||||||
{
|
|
||||||
return pfn;
|
|
||||||
}
|
|
||||||
|
|
||||||
static inline unsigned long gfn_to_pfn(unsigned long gfn)
|
|
||||||
{
|
|
||||||
return gfn;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Pseudo-physical <-> BUS conversion */
|
|
||||||
static inline unsigned long pfn_to_bfn(unsigned long pfn)
|
|
||||||
{
|
|
||||||
unsigned long mfn;
|
|
||||||
|
|
||||||
if (phys_to_mach.rb_node != NULL) {
|
|
||||||
mfn = __pfn_to_mfn(pfn);
|
|
||||||
if (mfn != INVALID_P2M_ENTRY)
|
|
||||||
return mfn;
|
|
||||||
}
|
|
||||||
|
|
||||||
return pfn;
|
|
||||||
}
|
|
||||||
|
|
||||||
static inline unsigned long bfn_to_pfn(unsigned long bfn)
|
|
||||||
{
|
|
||||||
return bfn;
|
|
||||||
}
|
|
||||||
|
|
||||||
#define bfn_to_local_pfn(bfn) bfn_to_pfn(bfn)
|
|
||||||
|
|
||||||
/* VIRT <-> GUEST conversion */
|
|
||||||
#define virt_to_gfn(v) (pfn_to_gfn(virt_to_phys(v) >> XEN_PAGE_SHIFT))
|
|
||||||
#define gfn_to_virt(m) (__va(gfn_to_pfn(m) << XEN_PAGE_SHIFT))
|
|
||||||
|
|
||||||
/* Only used in PV code. But ARM guests are always HVM. */
|
|
||||||
static inline xmaddr_t arbitrary_virt_to_machine(void *vaddr)
|
|
||||||
{
|
|
||||||
BUG();
|
|
||||||
}
|
|
||||||
|
|
||||||
/* TODO: this shouldn't be here but it is because the frontend drivers
|
|
||||||
* are using it (its rolled in headers) even though we won't hit the code path.
|
|
||||||
* So for right now just punt with this.
|
|
||||||
*/
|
|
||||||
static inline pte_t *lookup_address(unsigned long address, unsigned int *level)
|
|
||||||
{
|
|
||||||
BUG();
|
|
||||||
return NULL;
|
|
||||||
}
|
|
||||||
|
|
||||||
extern int set_foreign_p2m_mapping(struct gnttab_map_grant_ref *map_ops,
|
|
||||||
struct gnttab_map_grant_ref *kmap_ops,
|
|
||||||
struct page **pages, unsigned int count);
|
|
||||||
|
|
||||||
extern int clear_foreign_p2m_mapping(struct gnttab_unmap_grant_ref *unmap_ops,
|
|
||||||
struct gnttab_unmap_grant_ref *kunmap_ops,
|
|
||||||
struct page **pages, unsigned int count);
|
|
||||||
|
|
||||||
bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn);
|
|
||||||
bool __set_phys_to_machine_multi(unsigned long pfn, unsigned long mfn,
|
|
||||||
unsigned long nr_pages);
|
|
||||||
|
|
||||||
static inline bool set_phys_to_machine(unsigned long pfn, unsigned long mfn)
|
|
||||||
{
|
|
||||||
return __set_phys_to_machine(pfn, mfn);
|
|
||||||
}
|
|
||||||
|
|
||||||
#define xen_remap(cookie, size) ioremap_cache((cookie), (size))
|
|
||||||
#define xen_unmap(cookie) iounmap((cookie))
|
|
||||||
|
|
||||||
bool xen_arch_need_swiotlb(struct device *dev,
|
|
||||||
phys_addr_t phys,
|
|
||||||
dma_addr_t dev_addr);
|
|
||||||
unsigned long xen_get_swiotlb_free_pages(unsigned int order);
|
|
||||||
|
|
||||||
#endif /* _ASM_ARM_XEN_PAGE_H */
|
|
||||||
|
|
|
||||||
|
|
@ -1 +1 @@
|
||||||
#include <../../arm/include/asm/xen/hypercall.h>
|
#include <xen/arm/hypercall.h>
|
||||||
|
|
|
||||||
|
|
@ -1 +1 @@
|
||||||
#include <../../arm/include/asm/xen/hypervisor.h>
|
#include <xen/arm/hypervisor.h>
|
||||||
|
|
|
||||||
|
|
@ -1 +1 @@
|
||||||
#include <../../arm/include/asm/xen/interface.h>
|
#include <xen/arm/interface.h>
|
||||||
|
|
|
||||||
|
|
@ -1 +1 @@
|
||||||
#include <../../arm/include/asm/xen/page-coherent.h>
|
#include <xen/arm/page-coherent.h>
|
||||||
|
|
|
||||||
|
|
@ -1 +1 @@
|
||||||
#include <../../arm/include/asm/xen/page.h>
|
#include <xen/arm/page.h>
|
||||||
|
|
|
||||||
|
|
@ -0,0 +1,87 @@
|
||||||
|
/******************************************************************************
|
||||||
|
* hypercall.h
|
||||||
|
*
|
||||||
|
* Linux-specific hypervisor handling.
|
||||||
|
*
|
||||||
|
* Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Citrix, 2012
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU General Public License version 2
|
||||||
|
* as published by the Free Software Foundation; or, when distributed
|
||||||
|
* separately from the Linux kernel or incorporated into other
|
||||||
|
* software packages, subject to the following license:
|
||||||
|
*
|
||||||
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
* of this source file (the "Software"), to deal in the Software without
|
||||||
|
* restriction, including without limitation the rights to use, copy, modify,
|
||||||
|
* merge, publish, distribute, sublicense, and/or sell copies of the Software,
|
||||||
|
* and to permit persons to whom the Software is furnished to do so, subject to
|
||||||
|
* the following conditions:
|
||||||
|
*
|
||||||
|
* The above copyright notice and this permission notice shall be included in
|
||||||
|
* all copies or substantial portions of the Software.
|
||||||
|
*
|
||||||
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
||||||
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
||||||
|
* IN THE SOFTWARE.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef _ASM_ARM_XEN_HYPERCALL_H
|
||||||
|
#define _ASM_ARM_XEN_HYPERCALL_H
|
||||||
|
|
||||||
|
#include <linux/bug.h>
|
||||||
|
|
||||||
|
#include <xen/interface/xen.h>
|
||||||
|
#include <xen/interface/sched.h>
|
||||||
|
#include <xen/interface/platform.h>
|
||||||
|
|
||||||
|
long privcmd_call(unsigned call, unsigned long a1,
|
||||||
|
unsigned long a2, unsigned long a3,
|
||||||
|
unsigned long a4, unsigned long a5);
|
||||||
|
int HYPERVISOR_xen_version(int cmd, void *arg);
|
||||||
|
int HYPERVISOR_console_io(int cmd, int count, char *str);
|
||||||
|
int HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count);
|
||||||
|
int HYPERVISOR_sched_op(int cmd, void *arg);
|
||||||
|
int HYPERVISOR_event_channel_op(int cmd, void *arg);
|
||||||
|
unsigned long HYPERVISOR_hvm_op(int op, void *arg);
|
||||||
|
int HYPERVISOR_memory_op(unsigned int cmd, void *arg);
|
||||||
|
int HYPERVISOR_physdev_op(int cmd, void *arg);
|
||||||
|
int HYPERVISOR_vcpu_op(int cmd, int vcpuid, void *extra_args);
|
||||||
|
int HYPERVISOR_tmem_op(void *arg);
|
||||||
|
int HYPERVISOR_vm_assist(unsigned int cmd, unsigned int type);
|
||||||
|
int HYPERVISOR_platform_op_raw(void *arg);
|
||||||
|
static inline int HYPERVISOR_platform_op(struct xen_platform_op *op)
|
||||||
|
{
|
||||||
|
op->interface_version = XENPF_INTERFACE_VERSION;
|
||||||
|
return HYPERVISOR_platform_op_raw(op);
|
||||||
|
}
|
||||||
|
int HYPERVISOR_multicall(struct multicall_entry *calls, uint32_t nr);
|
||||||
|
|
||||||
|
static inline int
|
||||||
|
HYPERVISOR_suspend(unsigned long start_info_mfn)
|
||||||
|
{
|
||||||
|
struct sched_shutdown r = { .reason = SHUTDOWN_suspend };
|
||||||
|
|
||||||
|
/* start_info_mfn is unused on ARM */
|
||||||
|
return HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void
|
||||||
|
MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va,
|
||||||
|
unsigned int new_val, unsigned long flags)
|
||||||
|
{
|
||||||
|
BUG();
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void
|
||||||
|
MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req,
|
||||||
|
int count, int *success_count, domid_t domid)
|
||||||
|
{
|
||||||
|
BUG();
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif /* _ASM_ARM_XEN_HYPERCALL_H */
|
||||||
|
|
@ -0,0 +1,39 @@
|
||||||
|
#ifndef _ASM_ARM_XEN_HYPERVISOR_H
|
||||||
|
#define _ASM_ARM_XEN_HYPERVISOR_H
|
||||||
|
|
||||||
|
#include <linux/init.h>
|
||||||
|
|
||||||
|
extern struct shared_info *HYPERVISOR_shared_info;
|
||||||
|
extern struct start_info *xen_start_info;
|
||||||
|
|
||||||
|
/* Lazy mode for batching updates / context switch */
|
||||||
|
enum paravirt_lazy_mode {
|
||||||
|
PARAVIRT_LAZY_NONE,
|
||||||
|
PARAVIRT_LAZY_MMU,
|
||||||
|
PARAVIRT_LAZY_CPU,
|
||||||
|
};
|
||||||
|
|
||||||
|
static inline enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
|
||||||
|
{
|
||||||
|
return PARAVIRT_LAZY_NONE;
|
||||||
|
}
|
||||||
|
|
||||||
|
extern struct dma_map_ops *xen_dma_ops;
|
||||||
|
|
||||||
|
#ifdef CONFIG_XEN
|
||||||
|
void __init xen_early_init(void);
|
||||||
|
#else
|
||||||
|
static inline void xen_early_init(void) { return; }
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef CONFIG_HOTPLUG_CPU
|
||||||
|
static inline void xen_arch_register_cpu(int num)
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void xen_arch_unregister_cpu(int num)
|
||||||
|
{
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#endif /* _ASM_ARM_XEN_HYPERVISOR_H */
|
||||||
|
|
@ -0,0 +1,85 @@
|
||||||
|
/******************************************************************************
|
||||||
|
* Guest OS interface to ARM Xen.
|
||||||
|
*
|
||||||
|
* Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Citrix, 2012
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef _ASM_ARM_XEN_INTERFACE_H
|
||||||
|
#define _ASM_ARM_XEN_INTERFACE_H
|
||||||
|
|
||||||
|
#include <linux/types.h>
|
||||||
|
|
||||||
|
#define uint64_aligned_t uint64_t __attribute__((aligned(8)))
|
||||||
|
|
||||||
|
#define __DEFINE_GUEST_HANDLE(name, type) \
|
||||||
|
typedef struct { union { type *p; uint64_aligned_t q; }; } \
|
||||||
|
__guest_handle_ ## name
|
||||||
|
|
||||||
|
#define DEFINE_GUEST_HANDLE_STRUCT(name) \
|
||||||
|
__DEFINE_GUEST_HANDLE(name, struct name)
|
||||||
|
#define DEFINE_GUEST_HANDLE(name) __DEFINE_GUEST_HANDLE(name, name)
|
||||||
|
#define GUEST_HANDLE(name) __guest_handle_ ## name
|
||||||
|
|
||||||
|
#define set_xen_guest_handle(hnd, val) \
|
||||||
|
do { \
|
||||||
|
if (sizeof(hnd) == 8) \
|
||||||
|
*(uint64_t *)&(hnd) = 0; \
|
||||||
|
(hnd).p = val; \
|
||||||
|
} while (0)
|
||||||
|
|
||||||
|
#define __HYPERVISOR_platform_op_raw __HYPERVISOR_platform_op
|
||||||
|
|
||||||
|
#ifndef __ASSEMBLY__
|
||||||
|
/* Explicitly size integers that represent pfns in the interface with
|
||||||
|
* Xen so that we can have one ABI that works for 32 and 64 bit guests.
|
||||||
|
* Note that this means that the xen_pfn_t type may be capable of
|
||||||
|
* representing pfn's which the guest cannot represent in its own pfn
|
||||||
|
* type. However since pfn space is controlled by the guest this is
|
||||||
|
* fine since it simply wouldn't be able to create any sure pfns in
|
||||||
|
* the first place.
|
||||||
|
*/
|
||||||
|
typedef uint64_t xen_pfn_t;
|
||||||
|
#define PRI_xen_pfn "llx"
|
||||||
|
typedef uint64_t xen_ulong_t;
|
||||||
|
#define PRI_xen_ulong "llx"
|
||||||
|
typedef int64_t xen_long_t;
|
||||||
|
#define PRI_xen_long "llx"
|
||||||
|
/* Guest handles for primitive C types. */
|
||||||
|
__DEFINE_GUEST_HANDLE(uchar, unsigned char);
|
||||||
|
__DEFINE_GUEST_HANDLE(uint, unsigned int);
|
||||||
|
DEFINE_GUEST_HANDLE(char);
|
||||||
|
DEFINE_GUEST_HANDLE(int);
|
||||||
|
DEFINE_GUEST_HANDLE(void);
|
||||||
|
DEFINE_GUEST_HANDLE(uint64_t);
|
||||||
|
DEFINE_GUEST_HANDLE(uint32_t);
|
||||||
|
DEFINE_GUEST_HANDLE(xen_pfn_t);
|
||||||
|
DEFINE_GUEST_HANDLE(xen_ulong_t);
|
||||||
|
|
||||||
|
/* Maximum number of virtual CPUs in multi-processor guests. */
|
||||||
|
#define MAX_VIRT_CPUS 1
|
||||||
|
|
||||||
|
struct arch_vcpu_info { };
|
||||||
|
struct arch_shared_info { };
|
||||||
|
|
||||||
|
/* TODO: Move pvclock definitions some place arch independent */
|
||||||
|
struct pvclock_vcpu_time_info {
|
||||||
|
u32 version;
|
||||||
|
u32 pad0;
|
||||||
|
u64 tsc_timestamp;
|
||||||
|
u64 system_time;
|
||||||
|
u32 tsc_to_system_mul;
|
||||||
|
s8 tsc_shift;
|
||||||
|
u8 flags;
|
||||||
|
u8 pad[2];
|
||||||
|
} __attribute__((__packed__)); /* 32 bytes */
|
||||||
|
|
||||||
|
/* It is OK to have a 12 bytes struct with no padding because it is packed */
|
||||||
|
struct pvclock_wall_clock {
|
||||||
|
u32 version;
|
||||||
|
u32 sec;
|
||||||
|
u32 nsec;
|
||||||
|
u32 sec_hi;
|
||||||
|
} __attribute__((__packed__));
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#endif /* _ASM_ARM_XEN_INTERFACE_H */
|
||||||
|
|
@ -0,0 +1,98 @@
|
||||||
|
#ifndef _ASM_ARM_XEN_PAGE_COHERENT_H
|
||||||
|
#define _ASM_ARM_XEN_PAGE_COHERENT_H
|
||||||
|
|
||||||
|
#include <asm/page.h>
|
||||||
|
#include <linux/dma-mapping.h>
|
||||||
|
|
||||||
|
void __xen_dma_map_page(struct device *hwdev, struct page *page,
|
||||||
|
dma_addr_t dev_addr, unsigned long offset, size_t size,
|
||||||
|
enum dma_data_direction dir, unsigned long attrs);
|
||||||
|
void __xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
|
||||||
|
size_t size, enum dma_data_direction dir,
|
||||||
|
unsigned long attrs);
|
||||||
|
void __xen_dma_sync_single_for_cpu(struct device *hwdev,
|
||||||
|
dma_addr_t handle, size_t size, enum dma_data_direction dir);
|
||||||
|
|
||||||
|
void __xen_dma_sync_single_for_device(struct device *hwdev,
|
||||||
|
dma_addr_t handle, size_t size, enum dma_data_direction dir);
|
||||||
|
|
||||||
|
static inline void *xen_alloc_coherent_pages(struct device *hwdev, size_t size,
|
||||||
|
dma_addr_t *dma_handle, gfp_t flags, unsigned long attrs)
|
||||||
|
{
|
||||||
|
return __generic_dma_ops(hwdev)->alloc(hwdev, size, dma_handle, flags, attrs);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
|
||||||
|
void *cpu_addr, dma_addr_t dma_handle, unsigned long attrs)
|
||||||
|
{
|
||||||
|
__generic_dma_ops(hwdev)->free(hwdev, size, cpu_addr, dma_handle, attrs);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void xen_dma_map_page(struct device *hwdev, struct page *page,
|
||||||
|
dma_addr_t dev_addr, unsigned long offset, size_t size,
|
||||||
|
enum dma_data_direction dir, unsigned long attrs)
|
||||||
|
{
|
||||||
|
unsigned long page_pfn = page_to_xen_pfn(page);
|
||||||
|
unsigned long dev_pfn = XEN_PFN_DOWN(dev_addr);
|
||||||
|
unsigned long compound_pages =
|
||||||
|
(1<<compound_order(page)) * XEN_PFN_PER_PAGE;
|
||||||
|
bool local = (page_pfn <= dev_pfn) &&
|
||||||
|
(dev_pfn - page_pfn < compound_pages);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Dom0 is mapped 1:1, while the Linux page can span across
|
||||||
|
* multiple Xen pages, it's not possible for it to contain a
|
||||||
|
* mix of local and foreign Xen pages. So if the first xen_pfn
|
||||||
|
* == mfn the page is local otherwise it's a foreign page
|
||||||
|
* grant-mapped in dom0. If the page is local we can safely
|
||||||
|
* call the native dma_ops function, otherwise we call the xen
|
||||||
|
* specific function.
|
||||||
|
*/
|
||||||
|
if (local)
|
||||||
|
__generic_dma_ops(hwdev)->map_page(hwdev, page, offset, size, dir, attrs);
|
||||||
|
else
|
||||||
|
__xen_dma_map_page(hwdev, page, dev_addr, offset, size, dir, attrs);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
|
||||||
|
size_t size, enum dma_data_direction dir, unsigned long attrs)
|
||||||
|
{
|
||||||
|
unsigned long pfn = PFN_DOWN(handle);
|
||||||
|
/*
|
||||||
|
* Dom0 is mapped 1:1, while the Linux page can be spanned accross
|
||||||
|
* multiple Xen page, it's not possible to have a mix of local and
|
||||||
|
* foreign Xen page. Dom0 is mapped 1:1, so calling pfn_valid on a
|
||||||
|
* foreign mfn will always return false. If the page is local we can
|
||||||
|
* safely call the native dma_ops function, otherwise we call the xen
|
||||||
|
* specific function.
|
||||||
|
*/
|
||||||
|
if (pfn_valid(pfn)) {
|
||||||
|
if (__generic_dma_ops(hwdev)->unmap_page)
|
||||||
|
__generic_dma_ops(hwdev)->unmap_page(hwdev, handle, size, dir, attrs);
|
||||||
|
} else
|
||||||
|
__xen_dma_unmap_page(hwdev, handle, size, dir, attrs);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void xen_dma_sync_single_for_cpu(struct device *hwdev,
|
||||||
|
dma_addr_t handle, size_t size, enum dma_data_direction dir)
|
||||||
|
{
|
||||||
|
unsigned long pfn = PFN_DOWN(handle);
|
||||||
|
if (pfn_valid(pfn)) {
|
||||||
|
if (__generic_dma_ops(hwdev)->sync_single_for_cpu)
|
||||||
|
__generic_dma_ops(hwdev)->sync_single_for_cpu(hwdev, handle, size, dir);
|
||||||
|
} else
|
||||||
|
__xen_dma_sync_single_for_cpu(hwdev, handle, size, dir);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline void xen_dma_sync_single_for_device(struct device *hwdev,
|
||||||
|
dma_addr_t handle, size_t size, enum dma_data_direction dir)
|
||||||
|
{
|
||||||
|
unsigned long pfn = PFN_DOWN(handle);
|
||||||
|
if (pfn_valid(pfn)) {
|
||||||
|
if (__generic_dma_ops(hwdev)->sync_single_for_device)
|
||||||
|
__generic_dma_ops(hwdev)->sync_single_for_device(hwdev, handle, size, dir);
|
||||||
|
} else
|
||||||
|
__xen_dma_sync_single_for_device(hwdev, handle, size, dir);
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif /* _ASM_ARM_XEN_PAGE_COHERENT_H */
|
||||||
|
|
@ -0,0 +1,122 @@
|
||||||
|
#ifndef _ASM_ARM_XEN_PAGE_H
|
||||||
|
#define _ASM_ARM_XEN_PAGE_H
|
||||||
|
|
||||||
|
#include <asm/page.h>
|
||||||
|
#include <asm/pgtable.h>
|
||||||
|
|
||||||
|
#include <linux/pfn.h>
|
||||||
|
#include <linux/types.h>
|
||||||
|
#include <linux/dma-mapping.h>
|
||||||
|
|
||||||
|
#include <xen/xen.h>
|
||||||
|
#include <xen/interface/grant_table.h>
|
||||||
|
|
||||||
|
#define phys_to_machine_mapping_valid(pfn) (1)
|
||||||
|
|
||||||
|
/* Xen machine address */
|
||||||
|
typedef struct xmaddr {
|
||||||
|
phys_addr_t maddr;
|
||||||
|
} xmaddr_t;
|
||||||
|
|
||||||
|
/* Xen pseudo-physical address */
|
||||||
|
typedef struct xpaddr {
|
||||||
|
phys_addr_t paddr;
|
||||||
|
} xpaddr_t;
|
||||||
|
|
||||||
|
#define XMADDR(x) ((xmaddr_t) { .maddr = (x) })
|
||||||
|
#define XPADDR(x) ((xpaddr_t) { .paddr = (x) })
|
||||||
|
|
||||||
|
#define INVALID_P2M_ENTRY (~0UL)
|
||||||
|
|
||||||
|
/*
|
||||||
|
* The pseudo-physical frame (pfn) used in all the helpers is always based
|
||||||
|
* on Xen page granularity (i.e 4KB).
|
||||||
|
*
|
||||||
|
* A Linux page may be split across multiple non-contiguous Xen page so we
|
||||||
|
* have to keep track with frame based on 4KB page granularity.
|
||||||
|
*
|
||||||
|
* PV drivers should never make a direct usage of those helpers (particularly
|
||||||
|
* pfn_to_gfn and gfn_to_pfn).
|
||||||
|
*/
|
||||||
|
|
||||||
|
unsigned long __pfn_to_mfn(unsigned long pfn);
|
||||||
|
extern struct rb_root phys_to_mach;
|
||||||
|
|
||||||
|
/* Pseudo-physical <-> Guest conversion */
|
||||||
|
static inline unsigned long pfn_to_gfn(unsigned long pfn)
|
||||||
|
{
|
||||||
|
return pfn;
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline unsigned long gfn_to_pfn(unsigned long gfn)
|
||||||
|
{
|
||||||
|
return gfn;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Pseudo-physical <-> BUS conversion */
|
||||||
|
static inline unsigned long pfn_to_bfn(unsigned long pfn)
|
||||||
|
{
|
||||||
|
unsigned long mfn;
|
||||||
|
|
||||||
|
if (phys_to_mach.rb_node != NULL) {
|
||||||
|
mfn = __pfn_to_mfn(pfn);
|
||||||
|
if (mfn != INVALID_P2M_ENTRY)
|
||||||
|
return mfn;
|
||||||
|
}
|
||||||
|
|
||||||
|
return pfn;
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline unsigned long bfn_to_pfn(unsigned long bfn)
|
||||||
|
{
|
||||||
|
return bfn;
|
||||||
|
}
|
||||||
|
|
||||||
|
#define bfn_to_local_pfn(bfn) bfn_to_pfn(bfn)
|
||||||
|
|
||||||
|
/* VIRT <-> GUEST conversion */
|
||||||
|
#define virt_to_gfn(v) (pfn_to_gfn(virt_to_phys(v) >> XEN_PAGE_SHIFT))
|
||||||
|
#define gfn_to_virt(m) (__va(gfn_to_pfn(m) << XEN_PAGE_SHIFT))
|
||||||
|
|
||||||
|
/* Only used in PV code. But ARM guests are always HVM. */
|
||||||
|
static inline xmaddr_t arbitrary_virt_to_machine(void *vaddr)
|
||||||
|
{
|
||||||
|
BUG();
|
||||||
|
}
|
||||||
|
|
||||||
|
/* TODO: this shouldn't be here but it is because the frontend drivers
|
||||||
|
* are using it (its rolled in headers) even though we won't hit the code path.
|
||||||
|
* So for right now just punt with this.
|
||||||
|
*/
|
||||||
|
static inline pte_t *lookup_address(unsigned long address, unsigned int *level)
|
||||||
|
{
|
||||||
|
BUG();
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
extern int set_foreign_p2m_mapping(struct gnttab_map_grant_ref *map_ops,
|
||||||
|
struct gnttab_map_grant_ref *kmap_ops,
|
||||||
|
struct page **pages, unsigned int count);
|
||||||
|
|
||||||
|
extern int clear_foreign_p2m_mapping(struct gnttab_unmap_grant_ref *unmap_ops,
|
||||||
|
struct gnttab_unmap_grant_ref *kunmap_ops,
|
||||||
|
struct page **pages, unsigned int count);
|
||||||
|
|
||||||
|
bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn);
|
||||||
|
bool __set_phys_to_machine_multi(unsigned long pfn, unsigned long mfn,
|
||||||
|
unsigned long nr_pages);
|
||||||
|
|
||||||
|
static inline bool set_phys_to_machine(unsigned long pfn, unsigned long mfn)
|
||||||
|
{
|
||||||
|
return __set_phys_to_machine(pfn, mfn);
|
||||||
|
}
|
||||||
|
|
||||||
|
#define xen_remap(cookie, size) ioremap_cache((cookie), (size))
|
||||||
|
#define xen_unmap(cookie) iounmap((cookie))
|
||||||
|
|
||||||
|
bool xen_arch_need_swiotlb(struct device *dev,
|
||||||
|
phys_addr_t phys,
|
||||||
|
dma_addr_t dev_addr);
|
||||||
|
unsigned long xen_get_swiotlb_free_pages(unsigned int order);
|
||||||
|
|
||||||
|
#endif /* _ASM_ARM_XEN_PAGE_H */
|
||||||
Loading…
Reference in New Issue