/*
* The PCI Library
*
- * Copyright (c) 1997--2015 Martin Mares <mj@ucw.cz>
+ * Copyright (c) 1997--2020 Martin Mares <mj@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include "header.h"
#include "types.h"
-#define PCI_LIB_VERSION 0x030301
+#define PCI_LIB_VERSION 0x030604
#ifndef PCI_ABI
#define PCI_ABI
struct pci_methods;
enum pci_access_type {
- /* Known access methods, remember to update access.c as well */
+ /* Known access methods, remember to update init.c as well */
PCI_ACCESS_AUTO, /* Autodetection */
PCI_ACCESS_SYS_BUS_PCI, /* Linux /sys/bus/pci */
PCI_ACCESS_PROC_BUS_PCI, /* Linux /proc/bus/pci */
PCI_ACCESS_OBSD_DEVICE, /* OpenBSD /dev/pci */
PCI_ACCESS_DUMP, /* Dump file */
PCI_ACCESS_DARWIN, /* Darwin */
+ PCI_ACCESS_SYLIXOS_DEVICE, /* SylixOS pci */
+ PCI_ACCESS_HURD, /* GNU/Hurd */
PCI_ACCESS_MAX
};
struct pci_dev {
struct pci_dev *next; /* Next device in the chain */
- u16 domain; /* PCI domain (host bridge) */
+ u16 domain_16; /* 16-bit version of the PCI domain for backward compatibility */
+ /* 0xffff if the real domain doesn't fit in 16 bits */
u8 bus, dev, func; /* Bus inside domain, device and function */
/* These fields are set by pci_fill_info() */
- int known_fields; /* Set of info fields already known */
+ unsigned int known_fields; /* Set of info fields already known (see pci_fill_info()) */
u16 vendor_id, device_id; /* Identity of the device */
u16 device_class; /* PCI device class */
int irq; /* IRQ number */
char *module_alias; /* Linux kernel module alias */
char *label; /* Device name as exported by BIOS */
int numa_node; /* NUMA node */
+ pciaddr_t flags[6]; /* PCI_IORESOURCE_* flags for regions */
+ pciaddr_t rom_flags; /* PCI_IORESOURCE_* flags for expansion ROM */
+ int domain; /* PCI domain (host bridge) */
- /* Fields used internally: */
+ /* Fields used internally */
struct pci_access *access;
struct pci_methods *methods;
u8 *cache; /* Cached config registers */
int cache_len;
int hdrtype; /* Cached low 7 bits of header type, -1 if unknown */
- void *aux; /* Auxillary data */
+ void *aux; /* Auxiliary data for use by the back-end */
+ struct pci_property *properties; /* A linked list of extra properties */
+ struct pci_cap *last_cap; /* Last capability in the list */
};
#define PCI_ADDR_IO_MASK (~(pciaddr_t) 0x3)
int pci_write_long(struct pci_dev *, int pos, u32 data) PCI_ABI;
int pci_write_block(struct pci_dev *, int pos, u8 *buf, int len) PCI_ABI;
-int pci_fill_info(struct pci_dev *, int flags) PCI_ABI; /* Fill in device information */
+/*
+ * Most device properties take some effort to obtain, so libpci does not
+ * initialize them during default bus scan. Instead, you have to call
+ * pci_fill_info() with the proper PCI_FILL_xxx constants OR'ed together.
+ *
+ * Some properties are stored directly in the pci_dev structure.
+ * The remaining ones can be accessed through pci_get_string_property().
+ *
+ * pci_fill_info() returns the current value of pci_dev->known_fields.
+ * This is a bit mask of all fields, which were already obtained during
+ * the lifetime of the device. This includes fields which are not supported
+ * by the particular device -- in that case, the field is left at its default
+ * value, which is 0 for integer fields and NULL for pointers. On the other
+ * hand, we never consider known fields unsupported by the current back-end;
+ * such fields always contain the default value.
+ *
+ * XXX: flags and the result should be unsigned, but we do not want to break the ABI.
+ */
+
+int pci_fill_info(struct pci_dev *, int flags) PCI_ABI;
+char *pci_get_string_property(struct pci_dev *d, u32 prop) PCI_ABI;
#define PCI_FILL_IDENT 0x0001
#define PCI_FILL_IRQ 0x0002
#define PCI_FILL_MODULE_ALIAS 0x0200
#define PCI_FILL_LABEL 0x0400
#define PCI_FILL_NUMA_NODE 0x0800
+#define PCI_FILL_IO_FLAGS 0x1000
+#define PCI_FILL_DT_NODE 0x2000 /* Device tree node */
+#define PCI_FILL_IOMMU_GROUP 0x4000
#define PCI_FILL_RESCAN 0x00010000
void pci_setup_cache(struct pci_dev *, u8 *cache, int len) PCI_ABI;
#define PCI_CAP_EXTENDED 2 /* PCIe extended capabilities */
struct pci_cap *pci_find_cap(struct pci_dev *, unsigned int id, unsigned int type) PCI_ABI;
+struct pci_cap *pci_find_cap_nr(struct pci_dev *, unsigned int id, unsigned int type,
+ unsigned int *cap_number) PCI_ABI;
/*
* Filters