mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-23 00:00:01 +01:00
84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
/** Linux PCI helpers
|
|
*
|
|
* @file
|
|
* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
|
|
* @copyright 2017-2018, Steffen Vogel
|
|
**********************************************************************************/
|
|
|
|
/** @addtogroup fpga Kernel @{ */
|
|
|
|
#pragma once
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <villas/list.h>
|
|
|
|
#define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f)
|
|
#define PCI_FUNC(devfn) ((devfn) & 0x07)
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
struct pci_device {
|
|
struct {
|
|
int vendor;
|
|
int device;
|
|
int class_code;
|
|
} id;
|
|
|
|
struct {
|
|
int domain;
|
|
int bus;
|
|
int device;
|
|
int function;
|
|
} slot; /**< Bus, Device, Function (BDF) */
|
|
};
|
|
|
|
struct pci_region {
|
|
int num;
|
|
uintptr_t start;
|
|
uintptr_t end;
|
|
unsigned long long flags;
|
|
};
|
|
|
|
struct pci {
|
|
struct list devices; /**< List of available PCI devices in the system (struct pci_device) */
|
|
};
|
|
|
|
/** Initialize Linux PCI handle.
|
|
*
|
|
* This search for all available PCI devices under /sys/bus/pci
|
|
*
|
|
* @retval 0 Success. Everything went well.
|
|
* @retval <0 Error. Something went wrong.
|
|
*/
|
|
int pci_init(struct pci *p);
|
|
|
|
/** Destroy handle. */
|
|
int pci_destroy(struct pci *p);
|
|
|
|
int pci_device_parse_slot(struct pci_device *f, const char *str, const char **error);
|
|
|
|
int pci_device_parse_id(struct pci_device *f, const char *str, const char **error);
|
|
|
|
int pci_device_compare(const struct pci_device *d, const struct pci_device *f);
|
|
|
|
struct pci_device * pci_lookup_device(struct pci *p, struct pci_device *filter);
|
|
|
|
/** Get currently loaded driver for device */
|
|
int pci_get_driver(const struct pci_device *d, char *buf, size_t buflen);
|
|
|
|
/** Bind a new LKM to the PCI device */
|
|
int pci_attach_driver(const struct pci_device *d, const char *driver);
|
|
|
|
/** Return the IOMMU group of this PCI device or -1 if the device is not in a group. */
|
|
int pci_get_iommu_group(const struct pci_device *d);
|
|
|
|
size_t pci_get_regions(const struct pci_device *d, struct pci_region** regions);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
/** @} */
|