-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
- * Copyright 2013-2014 6WIND S.A.
- * 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.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2015 Intel Corporation.
+ * Copyright 2013-2014 6WIND S.A.
*/
#ifndef _RTE_BUS_PCI_H_
#include <rte_pci.h>
/** Pathname of PCI devices directory. */
-const char *pci_get_sysfs_path(void);
+const char *rte_pci_get_sysfs_path(void);
/* Forward declarations */
struct rte_pci_device;
struct rte_mem_resource mem_resource[PCI_MAX_RESOURCE];
/**< PCI Memory Resource */
struct rte_intr_handle intr_handle; /**< Interrupt handle */
- struct rte_pci_driver *driver; /**< Associated driver */
+ struct rte_pci_driver *driver; /**< PCI driver used in probing */
uint16_t max_vfs; /**< sriov enable if not zero */
enum rte_kernel_driver kdrv; /**< Kernel driver passthrough */
char name[PCI_PRI_STR_SIZE+1]; /**< PCI location (ASCII) */
+ struct rte_intr_handle vfio_req_intr_handle;
+ /**< Handler of VFIO request interrupt */
};
/**
*/
#define RTE_DEV_TO_PCI(ptr) container_of(ptr, struct rte_pci_device, device)
+#define RTE_DEV_TO_PCI_CONST(ptr) \
+ container_of(ptr, const struct rte_pci_device, device)
+
#define RTE_ETH_DEV_TO_PCI(eth_dev) RTE_DEV_TO_PCI((eth_dev)->device)
/** Any PCI device identifier (vendor, device, ...) */
*/
typedef int (pci_remove_t)(struct rte_pci_device *);
+/**
+ * Driver-specific DMA mapping. After a successful call the device
+ * will be able to read/write from/to this segment.
+ *
+ * @param dev
+ * Pointer to the PCI device.
+ * @param addr
+ * Starting virtual address of memory to be mapped.
+ * @param iova
+ * Starting IOVA address of memory to be mapped.
+ * @param len
+ * Length of memory segment being mapped.
+ * @return
+ * - 0 On success.
+ * - Negative value and rte_errno is set otherwise.
+ */
+typedef int (pci_dma_map_t)(struct rte_pci_device *dev, void *addr,
+ uint64_t iova, size_t len);
+
+/**
+ * Driver-specific DMA un-mapping. After a successful call the device
+ * will not be able to read/write from/to this segment.
+ *
+ * @param dev
+ * Pointer to the PCI device.
+ * @param addr
+ * Starting virtual address of memory to be unmapped.
+ * @param iova
+ * Starting IOVA address of memory to be unmapped.
+ * @param len
+ * Length of memory segment being unmapped.
+ * @return
+ * - 0 On success.
+ * - Negative value and rte_errno is set otherwise.
+ */
+typedef int (pci_dma_unmap_t)(struct rte_pci_device *dev, void *addr,
+ uint64_t iova, size_t len);
+
/**
* A structure describing a PCI driver.
*/
struct rte_pci_bus *bus; /**< PCI bus reference. */
pci_probe_t *probe; /**< Device Probe function. */
pci_remove_t *remove; /**< Device Remove function. */
+ pci_dma_map_t *dma_map; /**< device dma map function. */
+ pci_dma_unmap_t *dma_unmap; /**< device dma unmap function. */
const struct rte_pci_id *id_table; /**< ID table, NULL terminated. */
- uint32_t drv_flags; /**< Flags contolling handling of device. */
+ uint32_t drv_flags; /**< Flags RTE_PCI_DRV_*. */
};
/**
/** Device needs PCI BAR mapping (done with either IGB_UIO or VFIO) */
#define RTE_PCI_DRV_NEED_MAPPING 0x0001
+/** Device needs PCI BAR mapping with enabled write combining (wc) */
+#define RTE_PCI_DRV_WC_ACTIVATE 0x0002
+/** Device already probed can be probed again to check for new ports. */
+#define RTE_PCI_DRV_PROBE_AGAIN 0x0004
/** Device driver supports link state interrupt */
#define RTE_PCI_DRV_INTR_LSC 0x0008
/** Device driver supports device removal interrupt */
#define RTE_PCI_DRV_INTR_RMV 0x0010
/** Device driver needs to keep mapped resources if unsupported dev detected */
#define RTE_PCI_DRV_KEEP_MAPPED_RES 0x0020
-/** Device driver supports IOVA as VA */
-#define RTE_PCI_DRV_IOVA_AS_VA 0X0040
+/** Device driver needs IOVA as VA and cannot work with IOVA as PA */
+#define RTE_PCI_DRV_NEED_IOVA_AS_VA 0x0040
/**
* Map the PCI device resources in user space virtual memory address
/** Helper for PCI device registration from driver (eth, crypto) instance */
#define RTE_PMD_REGISTER_PCI(nm, pci_drv) \
-RTE_INIT(pciinitfn_ ##nm); \
-static void pciinitfn_ ##nm(void) \
+RTE_INIT(pciinitfn_ ##nm) \
{\
(pci_drv).driver.name = RTE_STR(nm);\
rte_pci_register(&pci_drv); \
* The length of the data buffer.
* @param offset
* The offset into PCI config space
+ * @return
+ * Number of bytes read on success, negative on error.
*/
int rte_pci_read_config(const struct rte_pci_device *device,
void *buf, size_t len, off_t offset);
git.droids-corp.org / dpdk.git / blobdiff