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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Minios-devel] [UNIKRAFT PATCH v3 3/3] plat/common: virt to phys addr conversion
Platform drivers need a way to get the virtual address coverted to the
physical address. We provide an common interface to enable such
conversion.
Signed-off-by: Sharan Santhanam <sharan.santhanam@xxxxxxxxx>
---
include/uk/arch/arm/intsizes.h | 1 +
include/uk/arch/types.h | 19 ++++++++++++++++++
include/uk/arch/x86_64/intsizes.h | 1 +
plat/common/include/io.h | 41 +++++++++++++++++++++++++++++++++++++++
plat/drivers/virtio/virtio_ring.c | 7 +++++--
plat/kvm/Makefile.uk | 1 +
plat/kvm/io.c | 40 ++++++++++++++++++++++++++++++++++++++
7 files changed, 108 insertions(+), 2 deletions(-)
create mode 100644 plat/common/include/io.h
create mode 100644 plat/kvm/io.c
diff --git a/include/uk/arch/arm/intsizes.h b/include/uk/arch/arm/intsizes.h
index 5b36c4b..0051c0a 100644
--- a/include/uk/arch/arm/intsizes.h
+++ b/include/uk/arch/arm/intsizes.h
@@ -43,3 +43,4 @@
#define __L_IS_32 /* long */
#define __LL_IS_64 /* long long */
#define __PTR_IS_32 /* void * */
+#define __PHY_ADDR_IS_32 /* phys_addr */
diff --git a/include/uk/arch/types.h b/include/uk/arch/types.h
index e8d7726..a69dc49 100644
--- a/include/uk/arch/types.h
+++ b/include/uk/arch/types.h
@@ -211,6 +211,20 @@ typedef __uptr __sz; /* size_t equivalent */
typedef __sptr __ssz; /* ssize_t equivalent */
typedef __sptr __off; /* off_t equivalent */
+#if (defined __PHY_ADDR_IS_16)
+typedef __u16 __phys_addr;
+#define __PRIpaddr __PRIx16
+#define __HAVE_PHYS_ADDR__
+#elif (defined __PHY_ADDR_IS_32)
+typedef __u32 __phys_addr;
+#define __PRIpaddr __PRIx32
+#define __HAVE_PHYS_ADDR__
+#elif (defined __PHY_ADDR_IS_64)
+typedef __u64 __phys_addr;
+#define __PRIpaddr __PRIx64
+#define __HAVE_PHYS_ADDR__
+#endif
+
/* Sanity check */
#ifndef __HAVE_INT8__
#error Missing 8-bit integer definitions
@@ -237,6 +251,11 @@ typedef __sptr __off; /* off_t equivalent */
#else
#undef __HAVE_PTR__
#endif
+#ifndef __HAVE_PHYS_ADDR__
+#error Missing physical address definitions
+#else
+#undef __HAVE_PHYS_ADDR__
+#endif
#ifndef __NULL
#define __NULL ((void *) 0)
diff --git a/include/uk/arch/x86_64/intsizes.h
b/include/uk/arch/x86_64/intsizes.h
index e3ef510..946ceca 100644
--- a/include/uk/arch/x86_64/intsizes.h
+++ b/include/uk/arch/x86_64/intsizes.h
@@ -43,3 +43,4 @@
#define __L_IS_64 /* long */
#define __LL_IS_64 /* long long */
#define __PTR_IS_64 /* void * */
+#define __PHY_ADDR_IS_64 /* phys_addr */
diff --git a/plat/common/include/io.h b/plat/common/include/io.h
new file mode 100644
index 0000000..6a92186
--- /dev/null
+++ b/plat/common/include/io.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+/*
+ *
+ *
+ * Copyright (c) 2018, NEC Europe Ltd., NEC Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
+ */
+#ifndef __UKPLAT_IO_H__
+#define __UKPLAT_IO_H__
+
+#include <uk/arch/types.h>
+
+__phys_addr ukplat_virt_to_phys(const volatile void *address);
+
+#endif /* __UKPLAT_IO_H__ */
diff --git a/plat/drivers/virtio/virtio_ring.c
b/plat/drivers/virtio/virtio_ring.c
index 098c324..790f0bb 100644
--- a/plat/drivers/virtio/virtio_ring.c
+++ b/plat/drivers/virtio/virtio_ring.c
@@ -28,6 +28,7 @@
#include <string.h>
#include <uk/print.h>
#include <cpu.h>
+#include <io.h>
#include <pci/virtio/virtio_pci.h>
#include <pci/virtio/virtio_ring.h>
#include <uk/arch/atomic.h>
@@ -106,6 +107,7 @@ int virtq_rings_init(struct virtq *vq, __u16 pci_base,
__u8 *data = NULL;
__u16 vq_num;
__sz vq_size;
+ __phys_addr pa;
UK_ASSERT(vq != NULL);
UK_ASSERT(a != NULL);
@@ -141,9 +143,10 @@ int virtq_rings_init(struct virtq *vq, __u16 pci_base,
/* set queue memory */
outw(pci_base + VIRTIO_PCI_QUEUE_SEL, queue_select);
- /* TODO use physical address */
+ /* use physical address */
+ pa = ukplat_virt_to_phys(data);
outl(pci_base + VIRTIO_PCI_QUEUE_PFN,
- (__u64) data >> VIRTIO_PCI_QUEUE_ADDR_SHIFT);
+ (pa >> VIRTIO_PCI_QUEUE_ADDR_SHIFT));
return 0;
}
diff --git a/plat/kvm/Makefile.uk b/plat/kvm/Makefile.uk
index 1ae1b08..e379c83 100644
--- a/plat/kvm/Makefile.uk
+++ b/plat/kvm/Makefile.uk
@@ -38,6 +38,7 @@ LIBKVMPLAT_SRCS-y += $(LIBKVMPLAT_BASE)/memory.c
LIBKVMPLAT_SRCS-y += $(LIBKVMPLAT_BASE)/irq.c
LIBKVMPLAT_SRCS-y += $(LIBKVMPLAT_BASE)/time.c
LIBKVMPLAT_SRCS-y += $(LIBKVMPLAT_BASE)/tscclock.c
+LIBKVMPLAT_SRCS-y += $(LIBKVMPLAT_BASE)/io.c
LIBKVMPLAT_SRCS-y += $(UK_PLAT_COMMON_BASE)/lcpu.c|common
LIBKVMPLAT_SRCS-y += $(UK_PLAT_COMMON_BASE)/memory.c|common
diff --git a/plat/kvm/io.c b/plat/kvm/io.c
new file mode 100644
index 0000000..ca83e44
--- /dev/null
+++ b/plat/kvm/io.c
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+/*
+ * Authors: Sharan Santhanam <sharan.santhanam@xxxxxxxxx>
+ *
+ * Copyright (c) 2018, NEC Europe Ltd., NEC Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
+ */
+
+#include <io.h>
+
+__phys_addr ukplat_virt_to_phys(const volatile void *address)
+{
+ return (__phys_addr)address;
+}
--
2.7.4
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