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62 lines
No EOL
1.5 KiB
C
62 lines
No EOL
1.5 KiB
C
/** Linux PCI helpers
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*
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* @file
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2017, Steffen Vogel
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**********************************************************************************/
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/** @addtogroup fpga Kernel @{ */
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#pragma once
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#include "list.h"
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#define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f)
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#define PCI_FUNC(devfn) ((devfn) & 0x07)
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struct pci_device {
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struct {
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int vendor;
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int device;
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int class;
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} id;
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struct {
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int domain;
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int bus;
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int device;
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int function;
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} slot; /**< Bus, Device, Function (BDF) */
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};
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struct pci {
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struct list devices; /**< List of available PCI devices in the system (struct pci_device) */
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};
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/** Initialize Linux PCI handle.
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*
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* This search for all available PCI devices under /sys/bus/pci
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*
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* @retval 0 Success. Everything went well.
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* @retval <0 Error. Something went wrong.
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*/
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int pci_init(struct pci *p);
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/** Destroy handle. */
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int pci_destroy(struct pci *p);
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int pci_device_parse_slot(struct pci_device *f, const char *str, const char **error);
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int pci_device_parse_id(struct pci_device *f, const char *str, const char **error);
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int pci_device_compare(const struct pci_device *d, const struct pci_device *f);
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struct pci_device * pci_lookup_device(struct pci *p, struct pci_device *filter);
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/** Bind a new LKM to the PCI device */
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int pci_attach_driver(struct pci_device *d, const char *driver);
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/** Return the IOMMU group of this PCI device or -1 if the device is not in a group. */
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int pci_get_iommu_group(struct pci_device *d);
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/** @} */ |