Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 239 insertions, 0 deletions

diff --git a/include/xen/xen-ops.h b/include/xen/xen-ops.h
new file mode 100644
index 000000000..39a5580f8
--- /dev/null
+++ b/include/xen/xen-ops.h
@@ -0,0 +1,239 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef INCLUDE_XEN_OPS_H
+#define INCLUDE_XEN_OPS_H
+
+#include <linux/percpu.h>
+#include <linux/notifier.h>
+#include <linux/efi.h>
+#include <xen/features.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_manage_runstate_time(int action);
+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;
+
+#if defined(CONFIG_XEN_PV) || defined(CONFIG_ARM) || defined(CONFIG_ARM64)
+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
+
+#if defined(CONFIG_XEN_PV)
+int xen_remap_pfn(struct vm_area_struct *vma, unsigned long addr,
+		  xen_pfn_t *pfn, int nr, int *err_ptr, pgprot_t prot,
+		  unsigned int domid, bool no_translate, struct page **pages);
+#else
+static inline int xen_remap_pfn(struct vm_area_struct *vma, unsigned long addr,
+				xen_pfn_t *pfn, int nr, int *err_ptr,
+				pgprot_t prot,  unsigned int domid,
+				bool no_translate, struct page **pages)
+{
+	BUG();
+	return 0;
+}
+#endif
+
+struct vm_area_struct;
+
+#ifdef CONFIG_XEN_AUTO_XLATE
+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 int domid,
+			      struct page **pages);
+int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
+			      int nr, struct page **pages);
+#else
+/*
+ * These two functions are called from arch/x86/xen/mmu.c and so stubs
+ * are needed for a configuration not specifying CONFIG_XEN_AUTO_XLATE.
+ */
+static inline 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 int domid,
+					    struct page **pages)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
+					    int nr, struct page **pages)
+{
+	return -EOPNOTSUPP;
+}
+#endif
+
+int xen_remap_vma_range(struct vm_area_struct *vma, unsigned long addr,
+			unsigned long len);
+
+/*
+ * xen_remap_domain_gfn_array() - map an array of foreign frames by gfn
+ * @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.
+ */
+static inline 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 int domid,
+					     struct page **pages)
+{
+	if (xen_feature(XENFEAT_auto_translated_physmap))
+		return xen_xlate_remap_gfn_array(vma, addr, gfn, nr, err_ptr,
+						 prot, domid, pages);
+
+	/* We BUG_ON because it's a programmer error to pass a NULL err_ptr,
+	 * and the consequences later is quite hard to detect what the actual
+	 * cause of "wrong memory was mapped in".
+	 */
+	BUG_ON(err_ptr == NULL);
+	return xen_remap_pfn(vma, addr, gfn, nr, err_ptr, prot, domid,
+			     false, pages);
+}
+
+/*
+ * xen_remap_domain_mfn_array() - map an array of foreign frames by mfn
+ * @vma:     VMA to map the pages into
+ * @addr:    Address at which to map the pages
+ * @mfn:     Array of MFNs to map
+ * @nr:      Number entries in the MFN array
+ * @err_ptr: Returns per-MFN error status.
+ * @prot:    page protection mask
+ * @domid:   Domain owning the pages
+ * @pages:   Array of pages if this domain has an auto-translated physmap
+ *
+ * @mfn and @err_ptr may point to the same buffer, the MFNs will be
+ * overwritten by the error codes after they are mapped.
+ *
+ * Returns the number of successfully mapped frames, or a -ve error
+ * code.
+ */
+static inline int xen_remap_domain_mfn_array(struct vm_area_struct *vma,
+					     unsigned long addr, xen_pfn_t *mfn,
+					     int nr, int *err_ptr,
+					     pgprot_t prot, unsigned int domid,
+					     struct page **pages)
+{
+	if (xen_feature(XENFEAT_auto_translated_physmap))
+		return -EOPNOTSUPP;
+
+	return xen_remap_pfn(vma, addr, mfn, nr, err_ptr, prot, domid,
+			     true, 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.
+ */
+static inline int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
+					     unsigned long addr,
+					     xen_pfn_t gfn, int nr,
+					     pgprot_t prot, unsigned int domid,
+					     struct page **pages)
+{
+	if (xen_feature(XENFEAT_auto_translated_physmap))
+		return -EOPNOTSUPP;
+
+	return xen_remap_pfn(vma, addr, &gfn, nr, NULL, prot, domid, false,
+			     pages);
+}
+
+int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
+			       int numpgs, 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);
+
+void xen_efi_runtime_setup(void);
+
+
+#if defined(CONFIG_XEN_PV) && !defined(CONFIG_PREEMPTION)
+
+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);
+}
+
+#else
+
+static inline void xen_preemptible_hcall_begin(void) { }
+static inline void xen_preemptible_hcall_end(void) { }
+
+#endif /* CONFIG_XEN_PV && !CONFIG_PREEMPTION */
+
+#endif /* INCLUDE_XEN_OPS_H */