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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v2 05/10] arm: compile libxc
On Fri, 2012-02-10 at 12:02 +0000, Stefano Stabellini wrote:
> 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>
> ---
> 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 e6fd488..3ee8c59 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
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