+
+ error:
+ if (fd >= 0)
+ close(fd);
+ return -1;
+}
+
+int
+rte_pci_ioport_map(struct rte_pci_device *dev, int bar,
+ struct rte_pci_ioport *p)
+{
+ int ret;
+
+ switch (dev->kdrv) {
+#if defined(RTE_ARCH_X86)
+ case RTE_KDRV_NIC_UIO:
+ if ((uintptr_t) dev->mem_resource[bar].addr <= UINT16_MAX) {
+ p->base = (uintptr_t)dev->mem_resource[bar].addr;
+ ret = 0;
+ } else
+ ret = -1;
+ break;
+#endif
+ default:
+ ret = -1;
+ break;
+ }
+
+ if (!ret)
+ p->dev = dev;
+
+ return ret;
+}
+
+static void
+pci_uio_ioport_read(struct rte_pci_ioport *p,
+ void *data, size_t len, off_t offset)
+{
+#if defined(RTE_ARCH_X86)
+ uint8_t *d;
+ int size;
+ unsigned short reg = p->base + offset;
+
+ for (d = data; len > 0; d += size, reg += size, len -= size) {
+ if (len >= 4) {
+ size = 4;
+ *(uint32_t *)d = inl(reg);
+ } else if (len >= 2) {
+ size = 2;
+ *(uint16_t *)d = inw(reg);
+ } else {
+ size = 1;
+ *d = inb(reg);
+ }
+ }
+#else
+ RTE_SET_USED(p);
+ RTE_SET_USED(data);
+ RTE_SET_USED(len);
+ RTE_SET_USED(offset);
+#endif
+}
+
+void
+rte_pci_ioport_read(struct rte_pci_ioport *p,
+ void *data, size_t len, off_t offset)
+{
+ switch (p->dev->kdrv) {
+ case RTE_KDRV_NIC_UIO:
+ pci_uio_ioport_read(p, data, len, offset);
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+pci_uio_ioport_write(struct rte_pci_ioport *p,
+ const void *data, size_t len, off_t offset)
+{
+#if defined(RTE_ARCH_X86)
+ const uint8_t *s;
+ int size;
+ unsigned short reg = p->base + offset;
+
+ for (s = data; len > 0; s += size, reg += size, len -= size) {
+ if (len >= 4) {
+ size = 4;
+ outl(*(const uint32_t *)s, reg);
+ } else if (len >= 2) {
+ size = 2;
+ outw(*(const uint16_t *)s, reg);
+ } else {
+ size = 1;
+ outb(*s, reg);
+ }
+ }
+#else
+ RTE_SET_USED(p);
+ RTE_SET_USED(data);
+ RTE_SET_USED(len);
+ RTE_SET_USED(offset);
+#endif
+}
+
+void
+rte_pci_ioport_write(struct rte_pci_ioport *p,
+ const void *data, size_t len, off_t offset)
+{
+ switch (p->dev->kdrv) {
+ case RTE_KDRV_NIC_UIO:
+ pci_uio_ioport_write(p, data, len, offset);
+ break;
+ default:
+ break;
+ }
+}
+
+int
+rte_pci_ioport_unmap(struct rte_pci_ioport *p)
+{
+ int ret;
+
+ switch (p->dev->kdrv) {
+#if defined(RTE_ARCH_X86)
+ case RTE_KDRV_NIC_UIO:
+ ret = 0;
+ break;
+#endif
+ default:
+ ret = -1;
+ break;
+ }
+
+ return ret;