6  *	Copyright 1997--1999 Martin Mares <mj@ucw.cz>
23  * The PCI interface treats multi-function devices as independent
39 #define PCIIOC_WRITE_COMBINE	(PCIIOC_BASE | 0x03)	/* Enable/disable write-combining. */
65 	unsigned char number;		/* PCI_SLOT(pci_dev->devfn) */
71 	return kobject_name(&slot->kobj);  in pci_slot_name()
90 	/* #0-5: standard PCI resources */
100 	PCI_IOV_RESOURCE_END = PCI_IOV_RESOURCES + PCI_SRIOV_NUM_BARS - 1,
108 				  PCI_BRIDGE_RESOURCE_NUM - 1,
125 #define PCI_POWER_ERROR	((pci_power_t __force) -1)
162 	/* Use #PERST to reset PCI-E device */
165 	/* Use PCI-E Hot Reset to reset device */
239 	struct list_head bus_list;	/* node in per-bus list */
243 	void		*sysdata;	/* hook for sys-specific extension */
252 	unsigned int	class;		/* 3 bytes: (base,sub,prog-if) */
255 	u8		pcie_cap;	/* PCI-E capability offset */
256 	u8		pcie_type:4;	/* PCI-E device/port type */
257 	u8		pcie_mpss:3;	/* PCI-E Max Payload Size Supported */
266 					   or supports 64-bit transfers.  */
270 	pci_power_t     current_state;  /* Current operating state. In ACPI-speak,
271 					   this is D0-D3, D0 being fully functional,
285 	unsigned int	d3_delay;	/* D3->D0 transition time in ms */
302 	resource_size_t	fw_addr[DEVICE_COUNT_RESOURCE]; /* FW-assigned addr */
306 	unsigned int	multifunction:1;/* Part of multi-function device */
344 		struct pci_sriov *sriov;	/* SR-IOV capability related */
354 	if (dev->is_virtfn)  in pci_physfn()
355 		dev = dev->physfn;  in pci_physfn()
369 	return (pdev->error_state != pci_channel_io_normal);  in pci_channel_offline()
378 	hlist_for_each_entry(tmp, pos, &pci_dev->saved_cap_space, next) {  in pci_find_saved_cap()
379 		if (tmp->cap.cap_nr == cap)  in pci_find_saved_cap()
388 	hlist_add_head(&new_cap->next, &pci_dev->saved_cap_space);  in pci_add_saved_cap()
401  * This does not apply to ACPI _CRS windows, even with the _DEC subtractive-
425 	void		*sysdata;	/* hook for sys-specific extension */
450  * Returns true if the pci bus is root (behind host-pci bridge),
455 	return !(pbus->parent);  in pci_is_root_bus()
461 	return pci_dev->msi_enabled || pci_dev->msix_enabled;  in pci_dev_msi_enabled()
478 /* Low-level architecture-dependent routines */
490 			unsigned int devfn, int reg, int len, u32 *val);
492 			unsigned int devfn, int reg, int len, u32 val);
504 /* ---------------------------------------------------------------- */
505 /** PCI Error Recovery System (PCI-ERS).  If a PCI device driver provides
536 	/* MMIO has been re-enabled, but not DMA */
549 /* ---------------------------------------------------------------- */
555 	const struct pci_device_id *id_table;	/* must be non-NULL for probe to be called */
557 	void (*remove) (struct pci_dev *dev);	/* Device removed (NULL if not a hot-plug capable driver) */
571  * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table
581  * PCI_DEVICE - macro used to describe a specific pci device
594  * PCI_DEVICE_CLASS - macro used to describe a specific pci device class
595  * @dev_class: the class, subclass, prog-if triple for this device
608  * PCI_VDEVICE - macro used to describe a specific pci device in short form
697 #define dev_is_pci(d) ((d)->bus == &pci_bus_type)
698 #define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false))
751 	return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val);  in pci_read_config_byte()
755 	return pci_bus_read_config_word(dev->bus, dev->devfn, where, val);  in pci_read_config_word()
760 	return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val);  in pci_read_config_dword()
764 	return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val);  in pci_write_config_byte()
768 	return pci_bus_write_config_word(dev->bus, dev->devfn, where, val);  in pci_write_config_word()
773 	return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val);  in pci_write_config_dword()
785 	return (atomic_read(&pdev->enable_cnt) > 0);  in pci_is_enabled()
790 	return pdev->is_managed;  in pci_is_managed()
893 /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
938 /* Proper probing supporting hot-pluggable devices */
975 #include <linux/pci-dma.h>
980 		dma_pool_create(name, &pdev->dev, size, align, allocation)
1003 	return -1;  in pci_enable_msi_block()
1018 	return -1;  in pci_enable_msix()
1170 	return -EIO;  in pci_enable_device()
1178 	return -EIO;  in pci_set_dma_mask()
1183 	return -EIO;  in pci_set_consistent_dma_mask()
1189 	return -EIO;  in pci_set_dma_max_seg_size()
1195 	return -EIO;  in pci_set_dma_seg_boundary()
1200 	return -EBUSY;  in pci_assign_resource()
1283 	return -EIO;  in pci_request_regions()
1319 /* Include architecture-dependent settings and functions */
1324 #define PCIBIOS_MAX_MEM_32 (-1)
1329 #define pci_resource_start(dev, bar)	((dev)->resource[(bar)].start)
1330 #define pci_resource_end(dev, bar)	((dev)->resource[(bar)].end)
1331 #define pci_resource_flags(dev, bar)	((dev)->resource[(bar)].flags)
1337 	 (pci_resource_end((dev), (bar)) -		\
1340 /* Similar to the helpers above, these manipulate per-pci_dev
1341  * driver-specific data.  They are really just a wrapper around
1346 	return dev_get_drvdata(&pdev->dev);  in pci_get_drvdata()
1351 	dev_set_drvdata(&pdev->dev, data);  in pci_set_drvdata()
1359 	return dev_name(&pdev->dev);  in pci_name()
1363 /* Some archs don't want to expose struct resource to userland as-is
1371 	*start = rsrc->start;  in pci_resource_to_user()
1372 	*end = rsrc->end;  in pci_resource_to_user()
1379  *  For at least a part of these bugs we need a work-around, so both
1380  *  generic (drivers/pci/quirks.c) and per-architecture code can define
1484 	return -ENODEV;  in pci_enable_sriov()
1505  * pci_pcie_cap - get the saved PCIe capability offset
1517 	return dev->pcie_cap;  in pci_pcie_cap()
1521  * pci_is_pcie - check if the PCI device is PCI Express capable
1537 /* Large Resource Data Type Tag Item Names */
1539 #define PCI_VPD_LTIN_RO_DATA		0x10	/* Read-Only Data */
1540 #define PCI_VPD_LTIN_RW_DATA		0x11	/* Read-Write Data */
1546 /* Small Resource Data Type Tag Item Names */
1565  * pci_vpd_lrdt_size - Extracts the Large Resource Data Type length
1576  * pci_vpd_srdt_size - Extracts the Small Resource Data Type length
1587  * pci_vpd_info_field_size - Extracts the information field length
1598  * pci_vpd_find_tag - Locates the Resource Data Type tag provided
1605  * -ENOENT otherwise.
1610  * pci_vpd_find_info_keyword - Locates an information field keyword in the VPD
1617  * -ENOENT otherwise.
1622 /* PCI <-> OF binding helpers */
1635 	return pdev ? pdev->dev.of_node : NULL;  in pci_device_to_OF_node()
1640 	return bus ? bus->dev.of_node : NULL;  in pci_bus_to_OF_node()
1651  * pci_find_upstream_pcie_bridge - find upstream PCIe-to-PCI bridge of a device