1 /*
2 * This library is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU Lesser General Public
4 * License as published by the Free Software Foundation; either
5 * version 2.1 of the License, or (at your option) any later version.
6 *
7 * This library is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
10 * Lesser General Public License for more details.
11 *
12 * You should have received a copy of the GNU Lesser General Public
13 * License along with this library; If not, see <http://www.gnu.org/licenses/>.
14 *
15 * Copyright (c) 2011 Citrix Systems
16 *
17 */
18
19 #include "xg_private.h"
20 #include "xc_core.h"
21
22 #include <xen-tools/libs.h>
23
24 int
xc_core_arch_gpfn_may_present(struct xc_core_arch_context * arch_ctxt,unsigned long pfn)25 xc_core_arch_gpfn_may_present(struct xc_core_arch_context *arch_ctxt,
26 unsigned long pfn)
27 {
28 /* TODO: memory from DT */
29 if (pfn >= 0x80000 && pfn < 0x88000)
30 return 1;
31 return 0;
32 }
33
34 int
xc_core_arch_auto_translated_physmap(const xc_dominfo_t * info)35 xc_core_arch_auto_translated_physmap(const xc_dominfo_t *info)
36 {
37 return 1;
38 }
39
40 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)41 xc_core_arch_memory_map_get(xc_interface *xch, struct xc_core_arch_context *unused,
42 xc_dominfo_t *info, shared_info_any_t *live_shinfo,
43 xc_core_memory_map_t **mapp,
44 unsigned int *nr_entries)
45 {
46 xen_pfn_t p2m_size = 0;
47 xc_core_memory_map_t *map;
48
49 if ( xc_domain_nr_gpfns(xch, info->domid, &p2m_size) < 0 )
50 return -1;
51
52 map = malloc(sizeof(*map));
53 if ( map == NULL )
54 {
55 PERROR("Could not allocate memory");
56 return -1;
57 }
58
59 map->addr = 0;
60 map->size = ((uint64_t)p2m_size) << PAGE_SHIFT;
61
62 *mapp = map;
63 *nr_entries = 1;
64 return 0;
65 }
66
67 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)68 xc_core_arch_map_p2m_rw(xc_interface *xch, struct domain_info_context *dinfo, xc_dominfo_t *info,
69 shared_info_any_t *live_shinfo, xen_pfn_t **live_p2m,
70 unsigned long *pfnp, int rw)
71 {
72 errno = ENOSYS;
73 return -1;
74 }
75
76 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)77 xc_core_arch_map_p2m(xc_interface *xch, unsigned int guest_width, xc_dominfo_t *info,
78 shared_info_any_t *live_shinfo, xen_pfn_t **live_p2m,
79 unsigned long *pfnp)
80 {
81 struct domain_info_context _dinfo = { .guest_width = guest_width };
82 struct domain_info_context *dinfo = &_dinfo;
83 return xc_core_arch_map_p2m_rw(xch, dinfo, info,
84 live_shinfo, live_p2m, pfnp, 0);
85 }
86
87 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)88 xc_core_arch_map_p2m_writable(xc_interface *xch, unsigned int guest_width, xc_dominfo_t *info,
89 shared_info_any_t *live_shinfo, xen_pfn_t **live_p2m,
90 unsigned long *pfnp)
91 {
92 struct domain_info_context _dinfo = { .guest_width = guest_width };
93 struct domain_info_context *dinfo = &_dinfo;
94 return xc_core_arch_map_p2m_rw(xch, dinfo, info,
95 live_shinfo, live_p2m, pfnp, 1);
96 }
97
98 int
xc_core_arch_get_scratch_gpfn(xc_interface * xch,uint32_t domid,xen_pfn_t * gpfn)99 xc_core_arch_get_scratch_gpfn(xc_interface *xch, uint32_t domid,
100 xen_pfn_t *gpfn)
101 {
102 /*
103 * The Grant Table region space is not used until the guest is
104 * booting. Use the first page for the scratch pfn.
105 */
106 BUILD_BUG_ON(GUEST_GNTTAB_SIZE < XC_PAGE_SIZE);
107
108 *gpfn = GUEST_GNTTAB_BASE >> XC_PAGE_SHIFT;
109
110 return 0;
111 }
112
113
114 /*
115 * Local variables:
116 * mode: C
117 * c-file-style: "BSD"
118 * c-basic-offset: 4
119 * tab-width: 4
120 * indent-tabs-mode: nil
121 * End:
122 */
123