For vfio case - Use pread/pwrite api to access virtio
ioport space.
Applicable for virtio 0.95 spec.
Signed-off-by: Santosh Shukla <sshukla at mvista.com>
Signed-off-by: Rizwan Ansari <ransari at mvista.com>
Signed-off-by: Rakesh Krishnamurthy <rakeshk at mvista.com>
---
v4 --> v5:
- Removed unnecessary type casting.
drivers/net/virtio/virtio_vfio_rw.h | 104 +++++++++++++++++++++++++++++++++++
1 file changed, 104 insertions(+)
create mode 100644 drivers/net/virtio/virtio_vfio_rw.h
diff --git a/drivers/net/virtio/virtio_vfio_rw.h
b/drivers/net/virtio/virtio_vfio_rw.h
new file mode 100644
index 0000000..a9ab04d
--- /dev/null
+++ b/drivers/net/virtio/virtio_vfio_rw.h
@@ -0,0 +1,104 @@
+/*
+ * BSD LICENSE
+ *
+ * Copyright(c) 2016 Cavium Networks. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * 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.
+ * * Neither the name of Intel Corporation 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
+ * OWNER 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.
+ *
+ */
+#ifndef _VIRTIO_VFIO_RW_H_
+#define _VIRTIO_VFIO_RW_H_
+
+#if defined(RTE_EAL_VFIO) && defined(RTE_LIBRTE_EAL_LINUXAPP)
+
+#include <stdint.h>
+#include <rte_pci.h>
+#include "virtio_logs.h"
+
+/* vfio rd/rw virtio apis */
+static inline void
+ioport_inb(const struct rte_pci_device *pci_dev, uint8_t reg, uint8_t *val)
+{
+ if (rte_eal_pci_read_bar(pci_dev, val, sizeof(uint8_t), reg, 0) <= 0) {
+ PMD_DRV_LOG(ERR, "Can't read from PCI bar space");
+ return;
+ }
+}
+
+static inline void
+ioport_inw(const struct rte_pci_device *pci_dev, uint16_t reg, uint16_t *val)
+{
+ if (rte_eal_pci_read_bar(pci_dev, val, sizeof(uint16_t), reg, 0) <= 0) {
+ PMD_DRV_LOG(ERR, "Can't read from PCI bar space");
+ return;
+ }
+}
+
+static inline void
+ioport_inl(const struct rte_pci_device *pci_dev, uint32_t reg, uint32_t *val)
+{
+ if (rte_eal_pci_read_bar(pci_dev, val, sizeof(uint32_t), reg, 0) <= 0) {
+ PMD_DRV_LOG(ERR, "Can't read from PCI bar space");
+ return;
+ }
+}
+
+static inline void
+ioport_outb_p(const struct rte_pci_device *pci_dev, uint8_t reg, uint8_t val)
+{
+ if (rte_eal_pci_write_bar(pci_dev, &val, sizeof(uint8_t),
+ reg, 0) <= 0) {
+ PMD_DRV_LOG(ERR, "Can't write to PCI bar space");
+ return;
+ }
+}
+
+
+static inline void
+ioport_outw_p(const struct rte_pci_device *pci_dev, uint16_t reg, uint16_t val)
+{
+ if (rte_eal_pci_write_bar(pci_dev, &val, sizeof(uint16_t),
+ reg, 0) <= 0) {
+ PMD_DRV_LOG(ERR, "Can't write to PCI bar space");
+ return;
+ }
+}
+
+
+static inline void
+ioport_outl_p(const struct rte_pci_device *pci_dev, uint32_t reg, uint32_t val)
+{
+ if (rte_eal_pci_write_bar(pci_dev, &val, sizeof(uint32_t),
+ reg, 0) <= 0) {
+ PMD_DRV_LOG(ERR, "Can't write to PCI bar space");
+ return;
+ }
+}
+
+#endif /* RTE_EAL_VFIO && RTE_XX_EAL_LINUXAPP */
+#endif /* _VIRTIO_VFIO_RW_H_ */
--
1.7.9.5
