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()
552  * void __iomem \*mappy = pcim_iomap(pdev, bar, length);
573  * still get a BAR's mapping address through pcim_iomap_table().
576 					    void __iomem *mapping, int bar)  in pcim_add_mapping_to_legacy_table()  argument
580 	if (!pci_bar_index_is_valid(bar))  in pcim_add_mapping_to_legacy_table()
588 	WARN_ON(legacy_iomap_table[bar]);  in pcim_add_mapping_to_legacy_table()
590 	legacy_iomap_table[bar] = mapping;  in pcim_add_mapping_to_legacy_table()
596  * Remove a mapping. The table only contains whole-BAR mappings, so this will
602 	int bar;  in pcim_remove_mapping_from_legacy_table()  local
609 	for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {  in pcim_remove_mapping_from_legacy_table()
610 		if (legacy_iomap_table[bar] == addr) {  in pcim_remove_mapping_from_legacy_table()
611 			legacy_iomap_table[bar] = NULL;  in pcim_remove_mapping_from_legacy_table()
619  * mapping by its BAR index.
621 static void pcim_remove_bar_from_legacy_table(struct pci_dev *pdev, int bar)  in pcim_remove_bar_from_legacy_table()  argument
625 	if (!pci_bar_index_is_valid(bar))  in pcim_remove_bar_from_legacy_table()
632 	legacy_iomap_table[bar] = NULL;  in pcim_remove_bar_from_legacy_table()
638  * @bar: BAR to iomap
646  * This SHOULD only be used once per BAR.
653 void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen)  in pcim_iomap()  argument
658 	if (!pci_bar_index_is_valid(bar))  in pcim_iomap()
666 	mapping = pci_iomap(pdev, bar, maxlen);  in pcim_iomap()
671 	if (pcim_add_mapping_to_legacy_table(pdev, mapping, bar) != 0)  in pcim_iomap()
712  * pcim_iomap_region - Request and iomap a PCI BAR
714  * @bar: Index of a BAR to map
722 void __iomem *pcim_iomap_region(struct pci_dev *pdev, int bar,  in pcim_iomap_region()  argument
728 	if (!pci_bar_index_is_valid(bar))  in pcim_iomap_region()
736 	res->bar = bar;  in pcim_iomap_region()
738 	ret = __pcim_request_region(pdev, bar, name, 0);  in pcim_iomap_region()
742 	res->baseaddr = pci_iomap(pdev, bar, 0);  in pcim_iomap_region()
752 	__pcim_release_region(pdev, bar);  in pcim_iomap_region()
761  * pcim_iounmap_region - Unmap and release a PCI BAR
763  * @bar: Index of BAR to unmap and release
765  * Unmap a BAR and release its region manually. Only pass BARs that were
768 void pcim_iounmap_region(struct pci_dev *pdev, int bar)  in pcim_iounmap_region()  argument
774 	res_searched.bar = bar;  in pcim_iounmap_region()
797 	int bar;  in pcim_iomap_regions()  local
800 	for (bar = 0; bar < DEVICE_COUNT_RESOURCE; bar++) {  in pcim_iomap_regions()
801 		if (!mask_contains_bar(mask, bar))  in pcim_iomap_regions()
804 		mapping = pcim_iomap_region(pdev, bar, name);  in pcim_iomap_regions()
809 		ret = pcim_add_mapping_to_legacy_table(pdev, mapping, bar);  in pcim_iomap_regions()
817 	while (--bar >= 0) {  in pcim_iomap_regions()
818 		pcim_iounmap_region(pdev, bar);  in pcim_iomap_regions()
819 		pcim_remove_bar_from_legacy_table(pdev, bar);  in pcim_iomap_regions()
826 static int _pcim_request_region(struct pci_dev *pdev, int bar, const char *name,  in _pcim_request_region()  argument
832 	if (!pci_bar_index_is_valid(bar))  in _pcim_request_region()
839 	res->bar = bar;  in _pcim_request_region()
841 	ret = __pcim_request_region(pdev, bar, name, request_flags);  in _pcim_request_region()
852  * pcim_request_region - Request a PCI BAR
854  * @bar: Index of BAR to request
859  * Request region specified by @bar.
864 int pcim_request_region(struct pci_dev *pdev, int bar, const char *name)  in pcim_request_region()  argument
866 	return _pcim_request_region(pdev, bar, name, 0);  in pcim_request_region()
871  * pcim_request_region_exclusive - Request a PCI BAR exclusively
873  * @bar: Index of BAR to request
878  * Request region specified by @bar exclusively.
883 int pcim_request_region_exclusive(struct pci_dev *pdev, int bar, const char *name)  in pcim_request_region_exclusive()  argument
885 	return _pcim_request_region(pdev, bar, name, IORESOURCE_EXCLUSIVE);  in pcim_request_region_exclusive()
889  * pcim_release_region - Release a PCI BAR
891  * @bar: Index of BAR to release
896 void pcim_release_region(struct pci_dev *pdev, int bar)  in pcim_release_region()  argument
902 	res_searched.bar = bar;  in pcim_release_region()
921 	int bar;  in pcim_release_all_regions()  local
923 	for (bar = 0; bar < PCI_STD_NUM_BARS; bar++)  in pcim_release_all_regions()
924 		pcim_release_region(pdev, bar);  in pcim_release_all_regions()
941 	int bar;  in pcim_request_all_regions()  local
943 	for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {  in pcim_request_all_regions()
944 		ret = pcim_request_region(pdev, bar, name);  in pcim_request_all_regions()
983  * pcim_iomap_range - Create a ranged __iomap mapping within a PCI BAR
985  * @bar: Index of the BAR
986  * @offset: Offset from the begin of the BAR
991  * Creates a new IO-Mapping within the specified @bar, ranging from @offset to
997 void __iomem *pcim_iomap_range(struct pci_dev *pdev, int bar,  in pcim_iomap_range()  argument
1003 	if (!pci_bar_index_is_valid(bar))  in pcim_iomap_range()
1010 	mapping = pci_iomap_range(pdev, bar, offset, len);  in pcim_iomap_range()