55 	/* A requested region spanning an entire BAR. */
59 	 * A requested region spanning an entire BAR, and a mapping for
60 	 * the entire BAR.
65 	 * A mapping within a BAR, either spanning the whole BAR or just a
81 	int bar;  member
87 	res->bar = -1;  in pcim_addr_devres_clear()
101  * @bar: BAR the range is within
102  * @offset: offset from the BAR's start address
109  * Request a range within a device's PCI BAR.  Sanity check the input.
111 static int __pcim_request_region_range(struct pci_dev *pdev, int bar,  in __pcim_request_region_range()  argument
116 	resource_size_t start = pci_resource_start(pdev, bar);  in __pcim_request_region_range()
117 	resource_size_t len = pci_resource_len(pdev, bar);  in __pcim_request_region_range()
118 	unsigned long dev_flags = pci_resource_flags(pdev, bar);  in __pcim_request_region_range()
120 	if (start == 0 || len == 0) /* Unused BAR. */  in __pcim_request_region_range()
145 static void __pcim_release_region_range(struct pci_dev *pdev, int bar,  in __pcim_release_region_range()  argument
149 	resource_size_t start = pci_resource_start(pdev, bar);  in __pcim_release_region_range()
150 	resource_size_t len = pci_resource_len(pdev, bar);  in __pcim_release_region_range()
151 	unsigned long flags = pci_resource_flags(pdev, bar);  in __pcim_release_region_range()
156 	if (len == 0 || maxlen == 0) /* This an unused BAR. Do nothing. */  in __pcim_release_region_range()
171 static int __pcim_request_region(struct pci_dev *pdev, int bar,  in __pcim_request_region()  argument
175 	unsigned long len = pci_resource_len(pdev, bar);  in __pcim_request_region()
177 	return __pcim_request_region_range(pdev, bar, offset, len, name, flags);  in __pcim_request_region()
180 static void __pcim_release_region(struct pci_dev *pdev, int bar)  in __pcim_release_region()  argument
183 	unsigned long len = pci_resource_len(pdev, bar);  in __pcim_release_region()
185 	__pcim_release_region_range(pdev, bar, offset, len);  in __pcim_release_region()
195 		__pcim_release_region(pdev, res->bar);  in pcim_addr_resource_release()
199 		__pcim_release_region(pdev, res->bar);  in pcim_addr_resource_release()
243 		return a->bar == b->bar;  in pcim_addr_resources_match()
409 static inline bool mask_contains_bar(int mask, int bar)  in mask_contains_bar()  argument
411 	return mask & BIT(bar);  in mask_contains_bar()
566  * void __iomem \*mappy = pcim_iomap(pdev, bar, length);
587  * still get a BAR's mapping address through pcim_iomap_table().
590 					    void __iomem *mapping, int bar)  in pcim_add_mapping_to_legacy_table()  argument
594 	if (bar >= PCI_STD_NUM_BARS)  in pcim_add_mapping_to_legacy_table()
602 	WARN_ON(legacy_iomap_table[bar]);  in pcim_add_mapping_to_legacy_table()
604 	legacy_iomap_table[bar] = mapping;  in pcim_add_mapping_to_legacy_table()
610  * Remove a mapping. The table only contains whole-BAR mappings, so this will
616 	int bar;  in pcim_remove_mapping_from_legacy_table()  local
623 	for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {  in pcim_remove_mapping_from_legacy_table()
624 		if (legacy_iomap_table[bar] == addr) {  in pcim_remove_mapping_from_legacy_table()
625 			legacy_iomap_table[bar] = NULL;  in pcim_remove_mapping_from_legacy_table()
633  * mapping by its BAR index.
635 static void pcim_remove_bar_from_legacy_table(struct pci_dev *pdev, int bar)  in pcim_remove_bar_from_legacy_table()  argument
639 	if (bar >= PCI_STD_NUM_BARS)  in pcim_remove_bar_from_legacy_table()
646 	legacy_iomap_table[bar] = NULL;  in pcim_remove_bar_from_legacy_table()
652  * @bar: BAR to iomap
660  * This SHOULD only be used once per BAR.
667 void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen)  in pcim_iomap()  argument
677 	mapping = pci_iomap(pdev, bar, maxlen);  in pcim_iomap()
682 	if (pcim_add_mapping_to_legacy_table(pdev, mapping, bar) != 0)  in pcim_iomap()
723  * pcim_iomap_region - Request and iomap a PCI BAR
725  * @bar: Index of a BAR to map
733 void __iomem *pcim_iomap_region(struct pci_dev *pdev, int bar,  in pcim_iomap_region()  argument
744 	res->bar = bar;  in pcim_iomap_region()
746 	ret = __pcim_request_region(pdev, bar, name, 0);  in pcim_iomap_region()
750 	res->baseaddr = pci_iomap(pdev, bar, 0);  in pcim_iomap_region()
760 	__pcim_release_region(pdev, bar);  in pcim_iomap_region()
769  * pcim_iounmap_region - Unmap and release a PCI BAR
771  * @bar: Index of BAR to unmap and release
773  * Unmap a BAR and release its region manually. Only pass BARs that were
776 static void pcim_iounmap_region(struct pci_dev *pdev, int bar)  in pcim_iounmap_region()  argument
782 	res_searched.bar = bar;  in pcim_iounmap_region()
804 	int bar;  in pcim_iomap_regions()  local
807 	for (bar = 0; bar < DEVICE_COUNT_RESOURCE; bar++) {  in pcim_iomap_regions()
808 		if (!mask_contains_bar(mask, bar))  in pcim_iomap_regions()
811 		mapping = pcim_iomap_region(pdev, bar, name);  in pcim_iomap_regions()
816 		ret = pcim_add_mapping_to_legacy_table(pdev, mapping, bar);  in pcim_iomap_regions()
824 	while (--bar >= 0) {  in pcim_iomap_regions()
825 		pcim_iounmap_region(pdev, bar);  in pcim_iomap_regions()
826 		pcim_remove_bar_from_legacy_table(pdev, bar);  in pcim_iomap_regions()
833 static int _pcim_request_region(struct pci_dev *pdev, int bar, const char *name,  in _pcim_request_region()  argument
843 	res->bar = bar;  in _pcim_request_region()
845 	ret = __pcim_request_region(pdev, bar, name, request_flags);  in _pcim_request_region()
856  * pcim_request_region - Request a PCI BAR
858  * @bar: Index of BAR to request
863  * Request region specified by @bar.
868 int pcim_request_region(struct pci_dev *pdev, int bar, const char *name)  in pcim_request_region()  argument
870 	return _pcim_request_region(pdev, bar, name, 0);  in pcim_request_region()
875  * pcim_request_region_exclusive - Request a PCI BAR exclusively
877  * @bar: Index of BAR to request
882  * Request region specified by @bar exclusively.
887 int pcim_request_region_exclusive(struct pci_dev *pdev, int bar, const char *name)  in pcim_request_region_exclusive()  argument
889 	return _pcim_request_region(pdev, bar, name, IORESOURCE_EXCLUSIVE);  in pcim_request_region_exclusive()
893  * pcim_release_region - Release a PCI BAR
895  * @bar: Index of BAR to release
900 void pcim_release_region(struct pci_dev *pdev, int bar)  in pcim_release_region()  argument
906 	res_searched.bar = bar;  in pcim_release_region()
925 	int bar;  in pcim_release_all_regions()  local
927 	for (bar = 0; bar < PCI_STD_NUM_BARS; bar++)  in pcim_release_all_regions()
928 		pcim_release_region(pdev, bar);  in pcim_release_all_regions()
945 	int bar;  in pcim_request_all_regions()  local
947 	for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {  in pcim_request_all_regions()
948 		ret = pcim_request_region(pdev, bar, name);  in pcim_request_all_regions()
982 	int bar;  in pcim_iomap_regions_request_all()  local
990 	for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {  in pcim_iomap_regions_request_all()
991 		if (!mask_contains_bar(mask, bar))  in pcim_iomap_regions_request_all()
993 		if (!pcim_iomap(pdev, bar, 0))  in pcim_iomap_regions_request_all()
1001 	 * If bar is larger than 0, then pcim_iomap() above has most likely  in pcim_iomap_regions_request_all()
1005 	ret = bar > 0 ? -EINVAL : -ENOMEM;  in pcim_iomap_regions_request_all()
1008 	while (--bar >= 0)  in pcim_iomap_regions_request_all()
1009 		pcim_iounmap(pdev, legacy_iomap_table[bar]);  in pcim_iomap_regions_request_all()
1039  * pcim_iomap_range - Create a ranged __iomap mapping within a PCI BAR
1041  * @bar: Index of the BAR
1042  * @offset: Offset from the begin of the BAR
1047  * Creates a new IO-Mapping within the specified @bar, ranging from @offset to
1053 void __iomem *pcim_iomap_range(struct pci_dev *pdev, int bar,  in pcim_iomap_range()  argument
1063 	mapping = pci_iomap_range(pdev, bar, offset, len);  in pcim_iomap_range()