X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_eal%2Fcommon%2Finclude%2Frte_pci.h;h=067e084e4f27027d070ce98c9175a8e1b71a168d;hb=756ce64b1ecdf107acfa45fc3f31359ca338649e;hp=1508ea935e12f379848944c3892e9f41791cdaf4;hpb=7a66c72d6cd6617888d1e20082d923a80abff836;p=dpdk.git

diff --git a/lib/librte_eal/common/include/rte_pci.h b/lib/librte_eal/common/include/rte_pci.h
index 1508ea935e..067e084e4f 100644
--- a/lib/librte_eal/common/include/rte_pci.h
+++ b/lib/librte_eal/common/include/rte_pci.h
@@ -512,6 +512,71 @@ int rte_eal_pci_read_config(const struct rte_pci_device *device,
 int rte_eal_pci_write_config(const struct rte_pci_device *device,
 			     const void *buf, size_t len, off_t offset);
 
+/**
+ * A structure used to access io resources for a pci device.
+ * rte_pci_ioport is arch, os, driver specific, and should not be used outside
+ * of pci ioport api.
+ */
+struct rte_pci_ioport {
+	struct rte_pci_device *dev;
+	uint64_t base;
+};
+
+/**
+ * Initialises a rte_pci_ioport object for a pci device io resource.
+ * This object is then used to gain access to those io resources (see below).
+ *
+ * @param dev
+ *   A pointer to a rte_pci_device structure describing the device.
+ *   to use
+ * @param bar
+ *   Index of the io pci resource we want to access.
+ * @param p
+ *   The rte_pci_ioport object to be initialized.
+ * @return
+ *  0 on success, negative on error.
+ */
+int rte_eal_pci_ioport_map(struct rte_pci_device *dev, int bar,
+			   struct rte_pci_ioport *p);
+
+/**
+ * Release any resources used in a rte_pci_ioport object.
+ *
+ * @param p
+ *   The rte_pci_ioport object to be uninitialized.
+ */
+int rte_eal_pci_ioport_unmap(struct rte_pci_ioport *p);
+
+/**
+ * Read from a io pci resource.
+ *
+ * @param p
+ *   The rte_pci_ioport object from which we want to read.
+ * @param data
+ *   A data buffer where the bytes should be read into
+ * @param len
+ *   The length of the data buffer.
+ * @param offset
+ *   The offset into the pci io resource.
+ */
+void rte_eal_pci_ioport_read(struct rte_pci_ioport *p,
+			     void *data, size_t len, off_t offset);
+
+/**
+ * Write to a io pci resource.
+ *
+ * @param p
+ *   The rte_pci_ioport object to which we want to write.
+ * @param data
+ *   A data buffer where the bytes should be read into
+ * @param len
+ *   The length of the data buffer.
+ * @param offset
+ *   The offset into the pci io resource.
+ */
+void rte_eal_pci_ioport_write(struct rte_pci_ioport *p,
+			      const void *data, size_t len, off_t offset);
+
 #ifdef RTE_PCI_CONFIG
 /**
  * Set special config space registers for performance purpose.