// SPDX-License-Identifier: GPL-2.0#include <linux/err.h>#include <linux/pci.h>#include <linux/io.h>#include <linux/gfp.h>#include <linux/export.h>#include <linux/of_address.h> enum devm_ioremap_type { DEVM_IOREMAP = 0, DEVM_IOREMAP_UC, DEVM_IOREMAP_WC,}; void devm_ioremap_release(struct device *dev, void *res){ iounmap(*(void __iomem **)res);} static int devm_ioremap_match(struct device *dev, void *res, void *match_data){ return *(void **)res == match_data;} static void __iomem *__devm_ioremap(struct device *dev, resource_size_t offset, resource_size_t size, enum devm_ioremap_type type){ void __iomem **ptr, *addr = NULL; ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL); if (!ptr) return NULL; switch (type) { case DEVM_IOREMAP: addr = ioremap(offset, size); break; case DEVM_IOREMAP_UC: addr = ioremap_uc(offset, size); break; case DEVM_IOREMAP_WC: addr = ioremap_wc(offset, size); break; } if (addr) { *ptr = addr; devres_add(dev, ptr); } else devres_free(ptr); return addr;} /** * devm_ioremap - Managed ioremap() * @dev: Generic device to remap IO address for * @offset: Resource address to map * @size: Size of map * * Managed ioremap(). Map is automatically unmapped on driver detach. */void __iomem *devm_ioremap(struct device *dev, resource_size_t offset, resource_size_t size){ return __devm_ioremap(dev, offset, size, DEVM_IOREMAP);}EXPORT_SYMBOL(devm_ioremap); /** * devm_ioremap_uc - Managed ioremap_uc() * @dev: Generic device to remap IO address for * @offset: Resource address to map * @size: Size of map * * Managed ioremap_uc(). Map is automatically unmapped on driver detach. */void __iomem *devm_ioremap_uc(struct device *dev, resource_size_t offset, resource_size_t size){ return __devm_ioremap(dev, offset, size, DEVM_IOREMAP_UC);}EXPORT_SYMBOL_GPL(devm_ioremap_uc); /** * devm_ioremap_wc - Managed ioremap_wc() * @dev: Generic device to remap IO address for * @offset: Resource address to map * @size: Size of map * * Managed ioremap_wc(). Map is automatically unmapped on driver detach. */void __iomem *devm_ioremap_wc(struct device *dev, resource_size_t offset, resource_size_t size){ return __devm_ioremap(dev, offset, size, DEVM_IOREMAP_WC);}EXPORT_SYMBOL(devm_ioremap_wc); /** * devm_iounmap - Managed iounmap() * @dev: Generic device to unmap for * @addr: Address to unmap * * Managed iounmap(). @addr must have been mapped using devm_ioremap*(). */void devm_iounmap(struct device *dev, void __iomem *addr){ WARN_ON(devres_destroy(dev, devm_ioremap_release, devm_ioremap_match, (__force void *)addr)); iounmap(addr);}EXPORT_SYMBOL(devm_iounmap); static void __iomem *__devm_ioremap_resource(struct device *dev, const struct resource *res, enum devm_ioremap_type type){ resource_size_t size; void __iomem *dest_ptr; char *pretty_name; BUG_ON(!dev); if (!res || resource_type(res) != IORESOURCE_MEM) { dev_err(dev, "invalid resource\n"); return IOMEM_ERR_PTR(-EINVAL); } size = resource_size(res); if (res->name) pretty_name = devm_kasprintf(dev, GFP_KERNEL, "%s %s", dev_name(dev), res->name); else pretty_name = devm_kstrdup(dev, dev_name(dev), GFP_KERNEL); if (!pretty_name) return IOMEM_ERR_PTR(-ENOMEM); if (!devm_request_mem_region(dev, res->start, size, pretty_name)) { dev_err(dev, "can't request region for resource %pR\n", res); return IOMEM_ERR_PTR(-EBUSY); } dest_ptr = __devm_ioremap(dev, res->start, size, type); if (!dest_ptr) { dev_err(dev, "ioremap failed for resource %pR\n", res); devm_release_mem_region(dev, res->start, size); dest_ptr = IOMEM_ERR_PTR(-ENOMEM); } return dest_ptr;} /** * devm_ioremap_resource() - check, request region, and ioremap resource * @dev: generic device to handle the resource for * @res: resource to be handled * * Checks that a resource is a valid memory region, requests the memory * region and ioremaps it. All operations are managed and will be undone * on driver detach. * * Usage example: * * res = platform_get_resource(pdev, IORESOURCE_MEM, 0); * base = devm_ioremap_resource(&pdev->dev, res); * if (IS_ERR(base)) * return PTR_ERR(base); * * Return: a pointer to the remapped memory or an ERR_PTR() encoded error code * on failure. */void __iomem *devm_ioremap_resource(struct device *dev, const struct resource *res){ return __devm_ioremap_resource(dev, res, DEVM_IOREMAP);}EXPORT_SYMBOL(devm_ioremap_resource); /** * devm_ioremap_resource_wc() - write-combined variant of * devm_ioremap_resource() * @dev: generic device to handle the resource for * @res: resource to be handled * * Return: a pointer to the remapped memory or an ERR_PTR() encoded error code * on failure. */void __iomem *devm_ioremap_resource_wc(struct device *dev, const struct resource *res){ return __devm_ioremap_resource(dev, res, DEVM_IOREMAP_WC);} /* * devm_of_iomap - Requests a resource and maps the memory mapped IO * for a given device_node managed by a given device * * Checks that a resource is a valid memory region, requests the memory * region and ioremaps it. All operations are managed and will be undone * on driver detach of the device. * * This is to be used when a device requests/maps resources described * by other device tree nodes (children or otherwise). * * @dev: The device "managing" the resource * @node: The device-tree node where the resource resides * @index: index of the MMIO range in the "reg" property * @size: Returns the size of the resource (pass NULL if not needed) * * Usage example: * * base = devm_of_iomap(&pdev->dev, node, 0, NULL); * if (IS_ERR(base)) * return PTR_ERR(base); * * Please Note: This is not a one-to-one replacement for of_iomap() because the * of_iomap() function does not track whether the region is already mapped. If * two drivers try to map the same memory, the of_iomap() function will succeed * but the devm_of_iomap() function will return -EBUSY. * * Return: a pointer to the requested and mapped memory or an ERR_PTR() encoded * error code on failure. */void __iomem *devm_of_iomap(struct device *dev, struct device_node *node, int index, resource_size_t *size){ struct resource res; if (of_address_to_resource(node, index, &res)) return IOMEM_ERR_PTR(-EINVAL); if (size) *size = resource_size(&res); return devm_ioremap_resource(dev, &res);}EXPORT_SYMBOL(devm_of_iomap); #ifdef CONFIG_HAS_IOPORT_MAP/* * Generic iomap devres */static void devm_ioport_map_release(struct device *dev, void *res){ ioport_unmap(*(void __iomem **)res);} static int devm_ioport_map_match(struct device *dev, void *res, void *match_data){ return *(void **)res == match_data;} /** * devm_ioport_map - Managed ioport_map() * @dev: Generic device to map ioport for * @port: Port to map * @nr: Number of ports to map * * Managed ioport_map(). Map is automatically unmapped on driver * detach. * * Return: a pointer to the remapped memory or NULL on failure. */void __iomem *devm_ioport_map(struct device *dev, unsigned long port, unsigned int nr){ void __iomem **ptr, *addr; ptr = devres_alloc(devm_ioport_map_release, sizeof(*ptr), GFP_KERNEL); if (!ptr) return NULL; addr = ioport_map(port, nr); if (addr) { *ptr = addr; devres_add(dev, ptr); } else devres_free(ptr); return addr;}EXPORT_SYMBOL(devm_ioport_map); /** * devm_ioport_unmap - Managed ioport_unmap() * @dev: Generic device to unmap for * @addr: Address to unmap * * Managed ioport_unmap(). @addr must have been mapped using * devm_ioport_map(). */void devm_ioport_unmap(struct device *dev, void __iomem *addr){ ioport_unmap(addr); WARN_ON(devres_destroy(dev, devm_ioport_map_release, devm_ioport_map_match, (__force void *)addr));}EXPORT_SYMBOL(devm_ioport_unmap);#endif /* CONFIG_HAS_IOPORT_MAP */ #ifdef CONFIG_PCI/* * PCI iomap devres */#define PCIM_IOMAP_MAX PCI_STD_NUM_BARS struct pcim_iomap_devres { void __iomem *table[PCIM_IOMAP_MAX];}; static void pcim_iomap_release(struct device *gendev, void *res){ struct pci_dev *dev = to_pci_dev(gendev); struct pcim_iomap_devres *this = res; int i; for (i = 0; i < PCIM_IOMAP_MAX; i++) if (this->table[i]) pci_iounmap(dev, this->table[i]);} /** * pcim_iomap_table - access iomap allocation table * @pdev: PCI device to access iomap table for * * Access iomap allocation table for @dev. If iomap table doesn't * exist and @pdev is managed, it will be allocated. All iomaps * recorded in the iomap table are automatically unmapped on driver * detach. * * This function might sleep when the table is first allocated but can * be safely called without context and guaranteed to succed once * allocated. */void __iomem * const *pcim_iomap_table(struct pci_dev *pdev){ struct pcim_iomap_devres *dr, *new_dr; dr = devres_find(&pdev->dev, pcim_iomap_release, NULL, NULL); if (dr) return dr->table; new_dr = devres_alloc(pcim_iomap_release, sizeof(*new_dr), GFP_KERNEL); if (!new_dr) return NULL; dr = devres_get(&pdev->dev, new_dr, NULL, NULL); return dr->table;}EXPORT_SYMBOL(pcim_iomap_table); /** * pcim_iomap - Managed pcim_iomap() * @pdev: PCI device to iomap for * @bar: BAR to iomap * @maxlen: Maximum length of iomap * * Managed pci_iomap(). Map is automatically unmapped on driver * detach. */void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen){ void __iomem **tbl; BUG_ON(bar >= PCIM_IOMAP_MAX); tbl = (void __iomem **)pcim_iomap_table(pdev); if (!tbl || tbl[bar]) /* duplicate mappings not allowed */ return NULL; tbl[bar] = pci_iomap(pdev, bar, maxlen); return tbl[bar];}EXPORT_SYMBOL(pcim_iomap); /** * pcim_iounmap - Managed pci_iounmap() * @pdev: PCI device to iounmap for * @addr: Address to unmap * * Managed pci_iounmap(). @addr must have been mapped using pcim_iomap(). */void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr){ void __iomem **tbl; int i; pci_iounmap(pdev, addr); tbl = (void __iomem **)pcim_iomap_table(pdev); BUG_ON(!tbl); for (i = 0; i < PCIM_IOMAP_MAX; i++) if (tbl[i] == addr) { tbl[i] = NULL; return; } WARN_ON(1);}EXPORT_SYMBOL(pcim_iounmap); /** * pcim_iomap_regions - Request and iomap PCI BARs * @pdev: PCI device to map IO resources for * @mask: Mask of BARs to request and iomap * @name: Name used when requesting regions * * Request and iomap regions specified by @mask. */int pcim_iomap_regions(struct pci_dev *pdev, int mask, const char *name){ void __iomem * const *iomap; int i, rc; iomap = pcim_iomap_table(pdev); if (!iomap) return -ENOMEM; for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { unsigned long len; if (!(mask & (1 << i))) continue; rc = -EINVAL; len = pci_resource_len(pdev, i); if (!len) goto err_inval; rc = pci_request_region(pdev, i, name); if (rc) goto err_inval; rc = -ENOMEM; if (!pcim_iomap(pdev, i, 0)) goto err_region; } return 0; err_region: pci_release_region(pdev, i); err_inval: while (--i >= 0) { if (!(mask & (1 << i))) continue; pcim_iounmap(pdev, iomap[i]); pci_release_region(pdev, i); } return rc;}EXPORT_SYMBOL(pcim_iomap_regions); /** * pcim_iomap_regions_request_all - Request all BARs and iomap specified ones * @pdev: PCI device to map IO resources for * @mask: Mask of BARs to iomap * @name: Name used when requesting regions * * Request all PCI BARs and iomap regions specified by @mask. */int pcim_iomap_regions_request_all(struct pci_dev *pdev, int mask, const char *name){ int request_mask = ((1 << 6) - 1) & ~mask; int rc; rc = pci_request_selected_regions(pdev, request_mask, name); if (rc) return rc; rc = pcim_iomap_regions(pdev, mask, name); if (rc) pci_release_selected_regions(pdev, request_mask); return rc;}EXPORT_SYMBOL(pcim_iomap_regions_request_all); /** * pcim_iounmap_regions - Unmap and release PCI BARs * @pdev: PCI device to map IO resources for * @mask: Mask of BARs to unmap and release * * Unmap and release regions specified by @mask. */void pcim_iounmap_regions(struct pci_dev *pdev, int mask){ void __iomem * const *iomap; int i; iomap = pcim_iomap_table(pdev); if (!iomap) return; for (i = 0; i < PCIM_IOMAP_MAX; i++) { if (!(mask & (1 << i))) continue; Lines 1–500 of 506. 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// SPDX-License-Identifier: GPL-2.0 #include <linux/err.h> #include <linux/pci.h> #include <linux/io.h> #include <linux/gfp.h> #include <linux/export.h> #include <linux/of_address.h> enum devm_ioremap_type { DEVM_IOREMAP = 0, DEVM_IOREMAP_UC, DEVM_IOREMAP_WC, }; void devm_ioremap_release(struct device *dev, void *res) { iounmap(*(void __iomem **)res); } static int devm_ioremap_match(struct device *dev, void *res, void *match_data) { return *(void **)res == match_data; } static void __iomem *__devm_ioremap(struct device *dev, resource_size_t offset, resource_size_t size, enum devm_ioremap_type type) { void __iomem **ptr, *addr = NULL; ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL); if (!ptr) return NULL; switch (type) { case DEVM_IOREMAP: addr = ioremap(offset, size); break; case DEVM_IOREMAP_UC: addr = ioremap_uc(offset, size); break; case DEVM_IOREMAP_WC: addr = ioremap_wc(offset, size); break; } if (addr) { *ptr = addr; devres_add(dev, ptr); } else devres_free(ptr); return addr; } /** * devm_ioremap - Managed ioremap() * @dev: Generic device to remap IO address for * @offset: Resource address to map * @size: Size of map * * Managed ioremap(). Map is automatically unmapped on driver detach. */ void __iomem *devm_ioremap(struct device *dev, resource_size_t offset, resource_size_t size) { return __devm_ioremap(dev, offset, size, DEVM_IOREMAP); } EXPORT_SYMBOL(devm_ioremap); /** * devm_ioremap_uc - Managed ioremap_uc() * @dev: Generic device to remap IO address for * @offset: Resource address to map * @size: Size of map * * Managed ioremap_uc(). Map is automatically unmapped on driver detach. */ void __iomem *devm_ioremap_uc(struct device *dev, resource_size_t offset, resource_size_t size) { return __devm_ioremap(dev, offset, size, DEVM_IOREMAP_UC); } EXPORT_SYMBOL_GPL(devm_ioremap_uc); /** * devm_ioremap_wc - Managed ioremap_wc() * @dev: Generic device to remap IO address for * @offset: Resource address to map * @size: Size of map * * Managed ioremap_wc(). Map is automatically unmapped on driver detach. */ void __iomem *devm_ioremap_wc(struct device *dev, resource_size_t offset, resource_size_t size) { return __devm_ioremap(dev, offset, size, DEVM_IOREMAP_WC); } EXPORT_SYMBOL(devm_ioremap_wc); /** * devm_iounmap - Managed iounmap() * @dev: Generic device to unmap for * @addr: Address to unmap * * Managed iounmap(). @addr must have been mapped using devm_ioremap*(). */ void devm_iounmap(struct device *dev, void __iomem *addr) { WARN_ON(devres_destroy(dev, devm_ioremap_release, devm_ioremap_match, (__force void *)addr)); iounmap(addr); } EXPORT_SYMBOL(devm_iounmap); static void __iomem * __devm_ioremap_resource(struct device *dev, const struct resource *res, enum devm_ioremap_type type) { resource_size_t size; void __iomem *dest_ptr; char *pretty_name; BUG_ON(!dev); if (!res || resource_type(res) != IORESOURCE_MEM) { dev_err(dev, "invalid resource\n"); return IOMEM_ERR_PTR(-EINVAL); } size = resource_size(res); if (res->name) pretty_name = devm_kasprintf(dev, GFP_KERNEL, "%s %s", dev_name(dev), res->name); else pretty_name = devm_kstrdup(dev, dev_name(dev), GFP_KERNEL); if (!pretty_name) return IOMEM_ERR_PTR(-ENOMEM); if (!devm_request_mem_region(dev, res->start, size, pretty_name)) { dev_err(dev, "can't request region for resource %pR\n", res); return IOMEM_ERR_PTR(-EBUSY); } dest_ptr = __devm_ioremap(dev, res->start, size, type); if (!dest_ptr) { dev_err(dev, "ioremap failed for resource %pR\n", res); devm_release_mem_region(dev, res->start, size); dest_ptr = IOMEM_ERR_PTR(-ENOMEM); } return dest_ptr; } /** * devm_ioremap_resource() - check, request region, and ioremap resource * @dev: generic device to handle the resource for * @res: resource to be handled * * Checks that a resource is a valid memory region, requests the memory * region and ioremaps it. All operations are managed and will be undone * on driver detach. * * Usage example: * * res = platform_get_resource(pdev, IORESOURCE_MEM, 0); * base = devm_ioremap_resource(&pdev->dev, res); * if (IS_ERR(base)) * return PTR_ERR(base); * * Return: a pointer to the remapped memory or an ERR_PTR() encoded error code * on failure. */ void __iomem *devm_ioremap_resource(struct device *dev, const struct resource *res) { return __devm_ioremap_resource(dev, res, DEVM_IOREMAP); } EXPORT_SYMBOL(devm_ioremap_resource); /** * devm_ioremap_resource_wc() - write-combined variant of * devm_ioremap_resource() * @dev: generic device to handle the resource for * @res: resource to be handled * * Return: a pointer to the remapped memory or an ERR_PTR() encoded error code * on failure. */ void __iomem *devm_ioremap_resource_wc(struct device *dev, const struct resource *res) { return __devm_ioremap_resource(dev, res, DEVM_IOREMAP_WC); } /* * devm_of_iomap - Requests a resource and maps the memory mapped IO * for a given device_node managed by a given device * * Checks that a resource is a valid memory region, requests the memory * region and ioremaps it. All operations are managed and will be undone * on driver detach of the device. * * This is to be used when a device requests/maps resources described * by other device tree nodes (children or otherwise). * * @dev: The device "managing" the resource * @node: The device-tree node where the resource resides * @index: index of the MMIO range in the "reg" property * @size: Returns the size of the resource (pass NULL if not needed) * * Usage example: * * base = devm_of_iomap(&pdev->dev, node, 0, NULL); * if (IS_ERR(base)) * return PTR_ERR(base); * * Please Note: This is not a one-to-one replacement for of_iomap() because the * of_iomap() function does not track whether the region is already mapped. If * two drivers try to map the same memory, the of_iomap() function will succeed * but the devm_of_iomap() function will return -EBUSY. * * Return: a pointer to the requested and mapped memory or an ERR_PTR() encoded * error code on failure. */ void __iomem *devm_of_iomap(struct device *dev, struct device_node *node, int index, resource_size_t *size) { struct resource res; if (of_address_to_resource(node, index, &res)) return IOMEM_ERR_PTR(-EINVAL); if (size) *size = resource_size(&res); return devm_ioremap_resource(dev, &res); } EXPORT_SYMBOL(devm_of_iomap); #ifdef CONFIG_HAS_IOPORT_MAP /* * Generic iomap devres */ static void devm_ioport_map_release(struct device *dev, void *res) { ioport_unmap(*(void __iomem **)res); } static int devm_ioport_map_match(struct device *dev, void *res, void *match_data) { return *(void **)res == match_data; } /** * devm_ioport_map - Managed ioport_map() * @dev: Generic device to map ioport for * @port: Port to map * @nr: Number of ports to map * * Managed ioport_map(). Map is automatically unmapped on driver * detach. * * Return: a pointer to the remapped memory or NULL on failure. */ void __iomem *devm_ioport_map(struct device *dev, unsigned long port, unsigned int nr) { void __iomem **ptr, *addr; ptr = devres_alloc(devm_ioport_map_release, sizeof(*ptr), GFP_KERNEL); if (!ptr) return NULL; addr = ioport_map(port, nr); if (addr) { *ptr = addr; devres_add(dev, ptr); } else devres_free(ptr); return addr; } EXPORT_SYMBOL(devm_ioport_map); /** * devm_ioport_unmap - Managed ioport_unmap() * @dev: Generic device to unmap for * @addr: Address to unmap * * Managed ioport_unmap(). @addr must have been mapped using * devm_ioport_map(). */ void devm_ioport_unmap(struct device *dev, void __iomem *addr) { ioport_unmap(addr); WARN_ON(devres_destroy(dev, devm_ioport_map_release, devm_ioport_map_match, (__force void *)addr)); } EXPORT_SYMBOL(devm_ioport_unmap); #endif /* CONFIG_HAS_IOPORT_MAP */ #ifdef CONFIG_PCI /* * PCI iomap devres */ #define PCIM_IOMAP_MAX PCI_STD_NUM_BARS struct pcim_iomap_devres { void __iomem *table[PCIM_IOMAP_MAX]; }; static void pcim_iomap_release(struct device *gendev, void *res) { struct pci_dev *dev = to_pci_dev(gendev); struct pcim_iomap_devres *this = res; int i; for (i = 0; i < PCIM_IOMAP_MAX; i++) if (this->table[i]) pci_iounmap(dev, this->table[i]); } /** * pcim_iomap_table - access iomap allocation table * @pdev: PCI device to access iomap table for * * Access iomap allocation table for @dev. If iomap table doesn't * exist and @pdev is managed, it will be allocated. All iomaps * recorded in the iomap table are automatically unmapped on driver * detach. * * This function might sleep when the table is first allocated but can * be safely called without context and guaranteed to succed once * allocated. */ void __iomem * const *pcim_iomap_table(struct pci_dev *pdev) { struct pcim_iomap_devres *dr, *new_dr; dr = devres_find(&pdev->dev, pcim_iomap_release, NULL, NULL); if (dr) return dr->table; new_dr = devres_alloc(pcim_iomap_release, sizeof(*new_dr), GFP_KERNEL); if (!new_dr) return NULL; dr = devres_get(&pdev->dev, new_dr, NULL, NULL); return dr->table; } EXPORT_SYMBOL(pcim_iomap_table); /** * pcim_iomap - Managed pcim_iomap() * @pdev: PCI device to iomap for * @bar: BAR to iomap * @maxlen: Maximum length of iomap * * Managed pci_iomap(). Map is automatically unmapped on driver * detach. */ void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen) { void __iomem **tbl; BUG_ON(bar >= PCIM_IOMAP_MAX); tbl = (void __iomem **)pcim_iomap_table(pdev); if (!tbl || tbl[bar]) /* duplicate mappings not allowed */ return NULL; tbl[bar] = pci_iomap(pdev, bar, maxlen); return tbl[bar]; } EXPORT_SYMBOL(pcim_iomap); /** * pcim_iounmap - Managed pci_iounmap() * @pdev: PCI device to iounmap for * @addr: Address to unmap * * Managed pci_iounmap(). @addr must have been mapped using pcim_iomap(). */ void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr) { void __iomem **tbl; int i; pci_iounmap(pdev, addr); tbl = (void __iomem **)pcim_iomap_table(pdev); BUG_ON(!tbl); for (i = 0; i < PCIM_IOMAP_MAX; i++) if (tbl[i] == addr) { tbl[i] = NULL; return; } WARN_ON(1); } EXPORT_SYMBOL(pcim_iounmap); /** * pcim_iomap_regions - Request and iomap PCI BARs * @pdev: PCI device to map IO resources for * @mask: Mask of BARs to request and iomap * @name: Name used when requesting regions * * Request and iomap regions specified by @mask. */ int pcim_iomap_regions(struct pci_dev *pdev, int mask, const char *name) { void __iomem * const *iomap; int i, rc; iomap = pcim_iomap_table(pdev); if (!iomap) return -ENOMEM; for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { unsigned long len; if (!(mask & (1 << i))) continue; rc = -EINVAL; len = pci_resource_len(pdev, i); if (!len) goto err_inval; rc = pci_request_region(pdev, i, name); if (rc) goto err_inval; rc = -ENOMEM; if (!pcim_iomap(pdev, i, 0)) goto err_region; } return 0; err_region: pci_release_region(pdev, i); err_inval: while (--i >= 0) { if (!(mask & (1 << i))) continue; pcim_iounmap(pdev, iomap[i]); pci_release_region(pdev, i); } return rc; } EXPORT_SYMBOL(pcim_iomap_regions); /** * pcim_iomap_regions_request_all - Request all BARs and iomap specified ones * @pdev: PCI device to map IO resources for * @mask: Mask of BARs to iomap * @name: Name used when requesting regions * * Request all PCI BARs and iomap regions specified by @mask. */ int pcim_iomap_regions_request_all(struct pci_dev *pdev, int mask, const char *name) { int request_mask = ((1 << 6) - 1) & ~mask; int rc; rc = pci_request_selected_regions(pdev, request_mask, name); if (rc) return rc; rc = pcim_iomap_regions(pdev, mask, name); if (rc) pci_release_selected_regions(pdev, request_mask); return rc; } EXPORT_SYMBOL(pcim_iomap_regions_request_all); /** * pcim_iounmap_regions - Unmap and release PCI BARs * @pdev: PCI device to map IO resources for * @mask: Mask of BARs to unmap and release * * Unmap and release regions specified by @mask. */ void pcim_iounmap_regions(struct pci_dev *pdev, int mask) { void __iomem * const *iomap; int i; iomap = pcim_iomap_table(pdev); if (!iomap) return; for (i = 0; i < PCIM_IOMAP_MAX; i++) { if (!(mask & (1 << i))) continue;