vfio: expose functions

[dpdk.git] / lib / librte_eal / linuxapp / eal / eal_pci_init.h

diff --git a/lib/librte_eal/linuxapp/eal/eal_pci_init.h b/lib/librte_eal/linuxapp/eal/eal_pci_init.h
index 1070eb8..a20783d 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/eal_pci_init.h
+++ b/lib/librte_eal/linuxapp/eal/eal_pci_init.h
@@ -34,30 +34,11 @@
 #ifndef EAL_PCI_INIT_H_
 #define EAL_PCI_INIT_H_
 
-#include "eal_vfio.h"
+#include <rte_vfio.h>
 
-struct pci_map {
-       void *addr;
-       uint64_t offset;
-       uint64_t size;
-       uint64_t phaddr;
-};
-
-/*
- * For multi-process we need to reproduce all PCI mappings in secondary
- * processes, so save them in a tailq.
- */
-struct mapped_pci_resource {
-       TAILQ_ENTRY(mapped_pci_resource) next;
-
-       struct rte_pci_addr pci_addr;
-       char path[PATH_MAX];
-       int nb_maps;
-       struct pci_map maps[PCI_MAX_RESOURCE];
-};
-
-TAILQ_HEAD(mapped_pci_res_list, mapped_pci_resource);
-extern struct mapped_pci_res_list *pci_res_list;
+/** IO resource type: */
+#define IORESOURCE_IO         0x00000100
+#define IORESOURCE_MEM        0x00000200
 
 /*
  * Helper function to map PCI resources right after hugepages in virtual memory
@@ -65,57 +46,51 @@ extern struct mapped_pci_res_list *pci_res_list;
 extern void *pci_map_addr;
 void *pci_find_max_end_va(void);
 
-void *pci_map_resource(void *requested_addr, int fd, off_t offset,
-               size_t size);
-
-/* map IGB_UIO resource prototype */
-int pci_uio_map_resource(struct rte_pci_device *dev);
-
-#ifdef VFIO_PRESENT
-
-#define VFIO_MAX_GROUPS 64
-
-int pci_vfio_enable(void);
-int pci_vfio_is_enabled(void);
-int pci_vfio_mp_sync_setup(void);
-
-/* map VFIO resource prototype */
-int pci_vfio_map_resource(struct rte_pci_device *dev);
-int pci_vfio_get_group_fd(int iommu_group_fd);
-int pci_vfio_get_container_fd(void);
-
-/*
- * Function prototypes for VFIO multiprocess sync functions
+/* parse one line of the "resource" sysfs file (note that the 'line'
+ * string is modified)
  */
-int vfio_mp_sync_send_request(int socket, int req);
-int vfio_mp_sync_receive_request(int socket);
-int vfio_mp_sync_send_fd(int socket, int fd);
-int vfio_mp_sync_receive_fd(int socket);
-int vfio_mp_sync_connect_to_primary(void);
-
-/* socket comm protocol definitions */
-#define SOCKET_REQ_CONTAINER 0x100
-#define SOCKET_REQ_GROUP 0x200
-#define SOCKET_OK 0x0
-#define SOCKET_NO_FD 0x1
-#define SOCKET_ERR 0xFF
-
-/*
- * we don't need to store device fd's anywhere since they can be obtained from
- * the group fd via an ioctl() call.
- */
-struct vfio_group {
-       int group_no;
-       int fd;
-};
-
-struct vfio_config {
-       int vfio_enabled;
-       int vfio_container_fd;
-       int vfio_container_has_dma;
-       int vfio_group_idx;
-       struct vfio_group vfio_groups[VFIO_MAX_GROUPS];
-};
+int pci_parse_one_sysfs_resource(char *line, size_t len, uint64_t *phys_addr,
+       uint64_t *end_addr, uint64_t *flags);
+
+int pci_uio_alloc_resource(struct rte_pci_device *dev,
+               struct mapped_pci_resource **uio_res);
+void pci_uio_free_resource(struct rte_pci_device *dev,
+               struct mapped_pci_resource *uio_res);
+int pci_uio_map_resource_by_index(struct rte_pci_device *dev, int res_idx,
+               struct mapped_pci_resource *uio_res, int map_idx);
+
+int pci_uio_read_config(const struct rte_intr_handle *intr_handle,
+                       void *buf, size_t len, off_t offs);
+int pci_uio_write_config(const struct rte_intr_handle *intr_handle,
+                        const void *buf, size_t len, off_t offs);
+
+int pci_uio_ioport_map(struct rte_pci_device *dev, int bar,
+                      struct rte_pci_ioport *p);
+void pci_uio_ioport_read(struct rte_pci_ioport *p,
+                        void *data, size_t len, off_t offset);
+void pci_uio_ioport_write(struct rte_pci_ioport *p,
+                         const void *data, size_t len, off_t offset);
+int pci_uio_ioport_unmap(struct rte_pci_ioport *p);
+
+#ifdef RTE_EAL_VFIO
+
+/* access config space */
+int pci_vfio_read_config(const struct rte_intr_handle *intr_handle,
+                        void *buf, size_t len, off_t offs);
+int pci_vfio_write_config(const struct rte_intr_handle *intr_handle,
+                         const void *buf, size_t len, off_t offs);
+
+int pci_vfio_ioport_map(struct rte_pci_device *dev, int bar,
+                       struct rte_pci_ioport *p);
+void pci_vfio_ioport_read(struct rte_pci_ioport *p,
+                         void *data, size_t len, off_t offset);
+void pci_vfio_ioport_write(struct rte_pci_ioport *p,
+                          const void *data, size_t len, off_t offset);
+int pci_vfio_ioport_unmap(struct rte_pci_ioport *p);
+
+/* map/unmap VFIO resource prototype */
+int pci_vfio_map_resource(struct rte_pci_device *dev);
+int pci_vfio_unmap_resource(struct rte_pci_device *dev);
 
 #endif