We will introduce the hypercall xc_reserved_device_memory_map
approach to libxc. This helps us get rdm entry info according to
different parameters. If flag == PCI_DEV_RDM_ALL, all entries
should be exposed. Or we just expose that rdm entry specific to
a SBDF.
CC: Ian Jackson
CC: Stefano Stabellini
CC: Ian Campbell
CC: Wei Liu
Signed-off-by: Tiejun Chen
Reviewed-by: Kevin Tian
---
v4:
* Nothing is changed.
tools/libxc/include/xenctrl.h | 8
tools/libxc/xc_domain.c | 36
2 files changed, 44 insertions(+)
diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include/xenctrl.h
index d1d2ab3..9160623 100644
--- a/tools/libxc/include/xenctrl.h
+++ b/tools/libxc/include/xenctrl.h
@@ -1326,6 +1326,14 @@ int xc_domain_set_memory_map(xc_interface *xch,
int xc_get_machine_memory_map(xc_interface *xch,
struct e820entry entries[],
uint32_t max_entries);
+
+int xc_reserved_device_memory_map(xc_interface *xch,
+ uint32_t flag,
+ uint16_t seg,
+ uint8_t bus,
+ uint8_t devfn,
+ struct xen_reserved_device_memory entries[],
+ uint32_t *max_entries);
#endif
int xc_domain_set_time_offset(xc_interface *xch,
uint32_t domid,
diff --git a/tools/libxc/xc_domain.c b/tools/libxc/xc_domain.c
index ce51e69..0951291 100644
--- a/tools/libxc/xc_domain.c
+++ b/tools/libxc/xc_domain.c
@@ -684,6 +684,42 @@ int xc_domain_set_memory_map(xc_interface *xch,
return rc;
}
+
+int xc_reserved_device_memory_map(xc_interface *xch,
+ uint32_t flag,
+ uint16_t seg,
+ uint8_t bus,
+ uint8_t devfn,
+ struct xen_reserved_device_memory entries[],
+ uint32_t *max_entries)
+{
+int rc;
+struct xen_reserved_device_memory_map xrdmmap = {
+.flag = flag,
+.seg = seg,
+.bus = bus,
+.devfn = devfn,
+.nr_entries = *max_entries
+};
+DECLARE_HYPERCALL_BOUNCE(entries,
+ sizeof(struct xen_reserved_device_memory) *
+ *max_entries, XC_HYPERCALL_BUFFER_BOUNCE_OUT);
+
+if ( xc_hypercall_bounce_pre(xch, entries) )
+return -1;
+
+set_xen_guest_handle(xrdmmap.buffer, entries);
+
+rc = do_memory_op(xch, XENMEM_reserved_device_memory_map,
+ &xrdmmap, sizeof(xrdmmap));
+
+xc_hypercall_bounce_post(xch, entries);
+
+*max_entries = xrdmmap.nr_entries;
+
+return rc;
+}
+
int xc_get_machine_memory_map(xc_interface *xch,
struct e820entry entries[],
uint32_t max_entries)
--
1.9.1
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