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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v3 2/7] arm: compile libxc
Introduce an empty implementation of the arch specific ARM functions in
xc_core_arm.c and xc_core_arm.h; define barriers on ARM.
Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
---
tools/libxc/Makefile | 1 +
tools/libxc/xc_core.h | 2 +
tools/libxc/xc_core_arm.c | 106 +++++++++++++++++++++++++++++++++++++++++++++
tools/libxc/xc_core_arm.h | 60 +++++++++++++++++++++++++
tools/libxc/xenctrl.h | 4 ++
5 files changed, 173 insertions(+), 0 deletions(-)
create mode 100644 tools/libxc/xc_core_arm.c
create mode 100644 tools/libxc/xc_core_arm.h
diff --git a/tools/libxc/Makefile b/tools/libxc/Makefile
index b5e7022..f2e1ba7 100644
--- a/tools/libxc/Makefile
+++ b/tools/libxc/Makefile
@@ -8,6 +8,7 @@ CTRL_SRCS-y :=
CTRL_SRCS-y += xc_core.c
CTRL_SRCS-$(CONFIG_X86) += xc_core_x86.c
CTRL_SRCS-$(CONFIG_IA64) += xc_core_ia64.c
+CTRL_SRCS-$(CONFIG_ARM) += xc_core_arm.c
CTRL_SRCS-y += xc_cpupool.c
CTRL_SRCS-y += xc_domain.c
CTRL_SRCS-y += xc_evtchn.c
diff --git a/tools/libxc/xc_core.h b/tools/libxc/xc_core.h
index 1e88a75..358a8c1 100644
--- a/tools/libxc/xc_core.h
+++ b/tools/libxc/xc_core.h
@@ -155,6 +155,8 @@ int xc_core_arch_map_p2m_writable(xc_interface *xch,
unsigned int guest_width,
# include "xc_core_x86.h"
#elif defined (__ia64__)
# include "xc_core_ia64.h"
+#elif defined (__arm__)
+# include "xc_core_arm.h"
#else
# error "unsupported architecture"
#endif
diff --git a/tools/libxc/xc_core_arm.c b/tools/libxc/xc_core_arm.c
new file mode 100644
index 0000000..b1482ec
--- /dev/null
+++ b/tools/libxc/xc_core_arm.c
@@ -0,0 +1,106 @@
+/*
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
USA
+ *
+ * Copyright (c) 2011 Citrix Systems
+ *
+ */
+
+#include "xg_private.h"
+#include "xc_core.h"
+
+int
+xc_core_arch_gpfn_may_present(struct xc_core_arch_context *arch_ctxt,
+ unsigned long pfn)
+{
+ /* TODO: memory from DT */
+ if (pfn >= 0x80000 && pfn < 0x88000)
+ return 1;
+ return 0;
+}
+
+
+static int nr_gpfns(xc_interface *xch, domid_t domid)
+{
+ return xc_domain_maximum_gpfn(xch, domid) + 1;
+}
+
+int
+xc_core_arch_auto_translated_physmap(const xc_dominfo_t *info)
+{
+ return 1;
+}
+
+int
+xc_core_arch_memory_map_get(xc_interface *xch, struct xc_core_arch_context
*unused,
+ xc_dominfo_t *info, shared_info_any_t *live_shinfo,
+ xc_core_memory_map_t **mapp,
+ unsigned int *nr_entries)
+{
+ unsigned long p2m_size = nr_gpfns(xch, info->domid);
+ xc_core_memory_map_t *map;
+
+ map = malloc(sizeof(*map));
+ if ( map == NULL )
+ {
+ PERROR("Could not allocate memory");
+ return -1;
+ }
+
+ map->addr = 0;
+ map->size = ((uint64_t)p2m_size) << PAGE_SHIFT;
+
+ *mapp = map;
+ *nr_entries = 1;
+ return 0;
+}
+
+static int
+xc_core_arch_map_p2m_rw(xc_interface *xch, struct domain_info_context *dinfo,
xc_dominfo_t *info,
+ shared_info_any_t *live_shinfo, xen_pfn_t **live_p2m,
+ unsigned long *pfnp, int rw)
+{
+ return -ENOSYS;
+}
+
+int
+xc_core_arch_map_p2m(xc_interface *xch, unsigned int guest_width, xc_dominfo_t
*info,
+ shared_info_any_t *live_shinfo, xen_pfn_t **live_p2m,
+ unsigned long *pfnp)
+{
+ struct domain_info_context _dinfo = { .guest_width = guest_width };
+ struct domain_info_context *dinfo = &_dinfo;
+ return xc_core_arch_map_p2m_rw(xch, dinfo, info,
+ live_shinfo, live_p2m, pfnp, 0);
+}
+
+int
+xc_core_arch_map_p2m_writable(xc_interface *xch, unsigned int guest_width,
xc_dominfo_t *info,
+ shared_info_any_t *live_shinfo, xen_pfn_t
**live_p2m,
+ unsigned long *pfnp)
+{
+ struct domain_info_context _dinfo = { .guest_width = guest_width };
+ struct domain_info_context *dinfo = &_dinfo;
+ return xc_core_arch_map_p2m_rw(xch, dinfo, info,
+ live_shinfo, live_p2m, pfnp, 1);
+}
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libxc/xc_core_arm.h b/tools/libxc/xc_core_arm.h
new file mode 100644
index 0000000..3a6be2a
--- /dev/null
+++ b/tools/libxc/xc_core_arm.h
@@ -0,0 +1,60 @@
+/*
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
USA
+ *
+ * Copyright (c) 2012 Citrix Systems
+ *
+ */
+
+#ifndef XC_CORE_ARM_H
+#define XC_CORE_ARM_H
+
+#define ELF_ARCH_DATA ELFDATA2LSB
+#define ELF_ARCH_MACHINE EM_ARM
+
+struct xc_core_arch_context {
+ /* nothing */
+};
+
+#define xc_core_arch_context_init(arch_ctxt) do {} while (0)
+#define xc_core_arch_context_free(arch_ctxt) do {} while (0)
+#define xc_core_arch_context_get(arch_ctxt, ctxt, xch, domid) \
+ (0)
+#define xc_core_arch_context_dump(xch, arch_ctxt, args, dump_rtn) (0)
+
+int
+xc_core_arch_gpfn_may_present(struct xc_core_arch_context *arch_ctxt,
+ unsigned long pfn);
+static inline int
+xc_core_arch_context_get_shdr(xc_interface *xch,
+ struct xc_core_arch_context *arch_ctxt,
+ struct xc_core_section_headers *sheaders,
+ struct xc_core_strtab *strtab,
+ uint64_t *filesz, uint64_t offset)
+{
+ *filesz = 0;
+ return 0;
+}
+
+#endif /* XC_CORE_ARM_H */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libxc/xenctrl.h b/tools/libxc/xenctrl.h
index 73d24e5..29c13a7 100644
--- a/tools/libxc/xenctrl.h
+++ b/tools/libxc/xenctrl.h
@@ -83,6 +83,10 @@
#define xen_mb() asm volatile ("mf" ::: "memory")
#define xen_rmb() asm volatile ("mf" ::: "memory")
#define xen_wmb() asm volatile ("mf" ::: "memory")
+#elif defined(__arm__)
+#define xen_mb() asm volatile ("dmb" : : : "memory")
+#define xen_rmb() asm volatile ("dmb" : : : "memory")
+#define xen_wmb() asm volatile ("dmb" : : : "memory")
#else
#error "Define barriers"
#endif
--
1.7.8.3
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