4 #include <linux/module.h>
6 void devm_ioremap_release(struct device *dev, void *res)
8 iounmap(*(void __iomem **)res);
11 static int devm_ioremap_match(struct device *dev, void *res, void *match_data)
13 return *(void **)res == match_data;
17 * devm_ioremap - Managed ioremap()
18 * @dev: Generic device to remap IO address for
19 * @offset: BUS offset to map
22 * Managed ioremap(). Map is automatically unmapped on driver detach.
24 void __iomem *devm_ioremap(struct device *dev, resource_size_t offset,
27 void __iomem **ptr, *addr;
29 ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
33 addr = ioremap(offset, size);
42 EXPORT_SYMBOL(devm_ioremap);
45 * devm_ioremap_nocache - Managed ioremap_nocache()
46 * @dev: Generic device to remap IO address for
47 * @offset: BUS offset to map
50 * Managed ioremap_nocache(). Map is automatically unmapped on driver
53 void __iomem *devm_ioremap_nocache(struct device *dev, resource_size_t offset,
56 void __iomem **ptr, *addr;
58 ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
62 addr = ioremap_nocache(offset, size);
71 EXPORT_SYMBOL(devm_ioremap_nocache);
74 * devm_iounmap - Managed iounmap()
75 * @dev: Generic device to unmap for
76 * @addr: Address to unmap
78 * Managed iounmap(). @addr must have been mapped using devm_ioremap*().
80 void devm_iounmap(struct device *dev, void __iomem *addr)
83 WARN_ON(devres_destroy(dev, devm_ioremap_release, devm_ioremap_match,
86 EXPORT_SYMBOL(devm_iounmap);
88 #ifdef CONFIG_HAS_IOPORT
90 * Generic iomap devres
92 static void devm_ioport_map_release(struct device *dev, void *res)
94 ioport_unmap(*(void __iomem **)res);
97 static int devm_ioport_map_match(struct device *dev, void *res,
100 return *(void **)res == match_data;
104 * devm_ioport_map - Managed ioport_map()
105 * @dev: Generic device to map ioport for
107 * @nr: Number of ports to map
109 * Managed ioport_map(). Map is automatically unmapped on driver
112 void __iomem * devm_ioport_map(struct device *dev, unsigned long port,
115 void __iomem **ptr, *addr;
117 ptr = devres_alloc(devm_ioport_map_release, sizeof(*ptr), GFP_KERNEL);
121 addr = ioport_map(port, nr);
124 devres_add(dev, ptr);
130 EXPORT_SYMBOL(devm_ioport_map);
133 * devm_ioport_unmap - Managed ioport_unmap()
134 * @dev: Generic device to unmap for
135 * @addr: Address to unmap
137 * Managed ioport_unmap(). @addr must have been mapped using
140 void devm_ioport_unmap(struct device *dev, void __iomem *addr)
143 WARN_ON(devres_destroy(dev, devm_ioport_map_release,
144 devm_ioport_map_match, (void *)addr));
146 EXPORT_SYMBOL(devm_ioport_unmap);
152 #define PCIM_IOMAP_MAX PCI_ROM_RESOURCE
154 struct pcim_iomap_devres {
155 void __iomem *table[PCIM_IOMAP_MAX];
158 static void pcim_iomap_release(struct device *gendev, void *res)
160 struct pci_dev *dev = container_of(gendev, struct pci_dev, dev);
161 struct pcim_iomap_devres *this = res;
164 for (i = 0; i < PCIM_IOMAP_MAX; i++)
166 pci_iounmap(dev, this->table[i]);
170 * pcim_iomap_table - access iomap allocation table
171 * @pdev: PCI device to access iomap table for
173 * Access iomap allocation table for @dev. If iomap table doesn't
174 * exist and @pdev is managed, it will be allocated. All iomaps
175 * recorded in the iomap table are automatically unmapped on driver
178 * This function might sleep when the table is first allocated but can
179 * be safely called without context and guaranteed to succed once
182 void __iomem * const * pcim_iomap_table(struct pci_dev *pdev)
184 struct pcim_iomap_devres *dr, *new_dr;
186 dr = devres_find(&pdev->dev, pcim_iomap_release, NULL, NULL);
190 new_dr = devres_alloc(pcim_iomap_release, sizeof(*new_dr), GFP_KERNEL);
193 dr = devres_get(&pdev->dev, new_dr, NULL, NULL);
196 EXPORT_SYMBOL(pcim_iomap_table);
199 * pcim_iomap - Managed pcim_iomap()
200 * @pdev: PCI device to iomap for
202 * @maxlen: Maximum length of iomap
204 * Managed pci_iomap(). Map is automatically unmapped on driver
207 void __iomem * pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen)
211 BUG_ON(bar >= PCIM_IOMAP_MAX);
213 tbl = (void __iomem **)pcim_iomap_table(pdev);
214 if (!tbl || tbl[bar]) /* duplicate mappings not allowed */
217 tbl[bar] = pci_iomap(pdev, bar, maxlen);
220 EXPORT_SYMBOL(pcim_iomap);
223 * pcim_iounmap - Managed pci_iounmap()
224 * @pdev: PCI device to iounmap for
225 * @addr: Address to unmap
227 * Managed pci_iounmap(). @addr must have been mapped using pcim_iomap().
229 void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr)
234 pci_iounmap(pdev, addr);
236 tbl = (void __iomem **)pcim_iomap_table(pdev);
239 for (i = 0; i < PCIM_IOMAP_MAX; i++)
240 if (tbl[i] == addr) {
246 EXPORT_SYMBOL(pcim_iounmap);
249 * pcim_iomap_regions - Request and iomap PCI BARs
250 * @pdev: PCI device to map IO resources for
251 * @mask: Mask of BARs to request and iomap
252 * @name: Name used when requesting regions
254 * Request and iomap regions specified by @mask.
256 int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name)
258 void __iomem * const *iomap;
261 iomap = pcim_iomap_table(pdev);
265 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
268 if (!(mask & (1 << i)))
272 len = pci_resource_len(pdev, i);
276 rc = pci_request_region(pdev, i, name);
281 if (!pcim_iomap(pdev, i, 0))
288 pci_release_region(pdev, i);
291 if (!(mask & (1 << i)))
293 pcim_iounmap(pdev, iomap[i]);
294 pci_release_region(pdev, i);
299 EXPORT_SYMBOL(pcim_iomap_regions);
302 * pcim_iomap_regions_request_all - Request all BARs and iomap specified ones
303 * @pdev: PCI device to map IO resources for
304 * @mask: Mask of BARs to iomap
305 * @name: Name used when requesting regions
307 * Request all PCI BARs and iomap regions specified by @mask.
309 int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask,
312 int request_mask = ((1 << 6) - 1) & ~mask;
315 rc = pci_request_selected_regions(pdev, request_mask, name);
319 rc = pcim_iomap_regions(pdev, mask, name);
321 pci_release_selected_regions(pdev, request_mask);
324 EXPORT_SYMBOL(pcim_iomap_regions_request_all);
327 * pcim_iounmap_regions - Unmap and release PCI BARs
328 * @pdev: PCI device to map IO resources for
329 * @mask: Mask of BARs to unmap and release
331 * Unamp and release regions specified by @mask.
333 void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask)
335 void __iomem * const *iomap;
338 iomap = pcim_iomap_table(pdev);
342 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
343 if (!(mask & (1 << i)))
346 pcim_iounmap(pdev, iomap[i]);
347 pci_release_region(pdev, i);
350 EXPORT_SYMBOL(pcim_iounmap_regions);