[dpdk-dev] [PATCH v4 10/14] virtio: pci: add dummy func definition for in/outb for non-x86 arch

[Santosh Shukla]

For non-x86 arch, Compiler will throw build error for in/out apis. Including
dummy api function so to pass build.

Note that: For virtio to work for non-x86 arch - RTE_EAL_VFIO is the only
supported method. RTE_EAL_IGB_UIO is not supported for non-x86 arch.

So, Virtio support for arch and supported interface by that arch:

ARCH       IGB_UIO 	VFIO
x86		Y	Y
ARM64		N/A	Y
PPC_64		N/A	Y	(Not tested but likely should work, as vfio is
arch independent)

Signed-off-by: Santosh Shukla <sshukla at mvista.com>
---
v4:
- dummy inb/outb function useful for non-x86 archs, Intent to get-rid of build
  error. 

drivers/net/virtio/virtio_pci.h |   42 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/drivers/net/virtio/virtio_pci.h b/drivers/net/virtio/virtio_pci.h
index 8526c07..600260a 100644
--- a/drivers/net/virtio/virtio_pci.h
+++ b/drivers/net/virtio/virtio_pci.h
@@ -239,6 +239,48 @@ outl_p(unsigned int data, unsigned int port)
 }
 #endif
 
+#if !defined(RTE_ARCH_X86_64) && !defined(RTE_ARCH_I686) && \
+		defined(RTE_EXEC_ENV_LINUXAPP)
+static inline uint8_t inb(unsigned long addr __rte_unused)
+{
+	PMD_INIT_LOG(ERR, "inb() not supported for this RTE_ARCH\n");
+	return 0;
+}
+
+static inline uint16_t inw(unsigned long addr __rte_unused)
+{
+	PMD_INIT_LOG(ERR, "inw() not supported for this RTE_ARCH\n");
+	return 0;
+}
+
+static inline uint32_t inl(unsigned long addr __rte_unused)
+{
+	PMD_INIT_LOG(ERR, "in() not supported for this RTE_ARCH\n");
+	return 0;
+}
+
+static inline void
+outb_p(unsigned char data __rte_unused, unsigned int port __rte_unused)
+{
+	PMD_INIT_LOG(ERR, "outb_p() not supported for this RTE_ARCH\n");
+	return;
+}
+
+static inline void
+outw_p(unsigned short data __rte_unused, unsigned int port __rte_unused)
+{
+	PMD_INIT_LOG(ERR, "outw_p() not supported for this RTE_ARCH\n");
+	return;
+}
+
+static inline void
+outl_p(unsigned int data __rte_unused, unsigned int port __rte_unused)
+{
+	PMD_INIT_LOG(ERR, "outl_p() not supported for this RTE_ARCH\n");
+	return;
+}
+#endif
+
 #define VIRTIO_PCI_REG_ADDR(hw, reg) \
 	(unsigned short)((hw)->io_base + (reg))
 
-- 
1.7.9.5