[linux.git] / lib / devres.c

#include <linux/pci.h>
#include <linux/io.h>
#include <linux/gfp.h>
#include <linux/export.h>

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;
}

/**
 * devm_ioremap - Managed ioremap()
 * @dev: Generic device to remap IO address for
 * @offset: BUS offset 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,
			   unsigned long size)
{
	void __iomem **ptr, *addr;

	ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
	if (!ptr)
		return NULL;

	addr = ioremap(offset, size);
	if (addr) {
		*ptr = addr;
		devres_add(dev, ptr);
	} else
		devres_free(ptr);

	return addr;
}
EXPORT_SYMBOL(devm_ioremap);

/**
 * devm_ioremap_nocache - Managed ioremap_nocache()
 * @dev: Generic device to remap IO address for
 * @offset: BUS offset to map
 * @size: Size of map
 *
 * Managed ioremap_nocache().  Map is automatically unmapped on driver
 * detach.
 */
void __iomem *devm_ioremap_nocache(struct device *dev, resource_size_t offset,
				   unsigned long size)
{
	void __iomem **ptr, *addr;

	ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
	if (!ptr)
		return NULL;

	addr = ioremap_nocache(offset, size);
	if (addr) {
		*ptr = addr;
		devres_add(dev, ptr);
	} else
		devres_free(ptr);

	return addr;
}
EXPORT_SYMBOL(devm_ioremap_nocache);

/**
 * 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,
			       (void *)addr));
	iounmap(addr);
}
EXPORT_SYMBOL(devm_iounmap);

/**
 * devm_request_and_ioremap() - Check, request region, and ioremap resource
 * @dev: Generic device to handle the resource for
 * @res: resource to be handled
 *
 * Takes all necessary steps to ioremap a mem resource. Uses managed device, so
 * everything is undone on driver detach. Checks arguments, so you can feed
 * it the result from e.g. platform_get_resource() directly. Returns the
 * remapped pointer or NULL on error. Usage example:
 *
 *	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 *	base = devm_request_and_ioremap(&pdev->dev, res);
 *	if (!base)
 *		return -EADDRNOTAVAIL;
 */
void __iomem *devm_request_and_ioremap(struct device *dev,
			struct resource *res)
{
	resource_size_t size;
	const char *name;
	void __iomem *dest_ptr;

	BUG_ON(!dev);

	if (!res || resource_type(res) != IORESOURCE_MEM) {
		dev_err(dev, "invalid resource\n");
		return NULL;
	}

	size = resource_size(res);
	name = res->name ?: dev_name(dev);

	if (!devm_request_mem_region(dev, res->start, size, name)) {
		dev_err(dev, "can't request region for resource %pR\n", res);
		return NULL;
	}

	if (res->flags & IORESOURCE_CACHEABLE)
		dest_ptr = devm_ioremap(dev, res->start, size);
	else
		dest_ptr = devm_ioremap_nocache(dev, res->start, size);

	if (!dest_ptr) {
		dev_err(dev, "ioremap failed for resource %pR\n", res);
		devm_release_mem_region(dev, res->start, size);
	}

	return dest_ptr;
}
EXPORT_SYMBOL(devm_request_and_ioremap);

#ifdef CONFIG_HAS_IOPORT
/*
 * 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.
 */
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, (void *)addr));
}
EXPORT_SYMBOL(devm_ioport_unmap);

#ifdef CONFIG_PCI
/*
 * PCI iomap devres
 */
#define PCIM_IOMAP_MAX	PCI_ROM_RESOURCE

struct pcim_iomap_devres {
	void __iomem *table[PCIM_IOMAP_MAX];
};

static void pcim_iomap_release(struct device *gendev, void *res)
{
	struct pci_dev *dev = container_of(gendev, struct pci_dev, dev);
	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 < DEVICE_COUNT_RESOURCE; i++) {
		if (!(mask & (1 << i)))
			continue;

		pcim_iounmap(pdev, iomap[i]);
		pci_release_region(pdev, i);
	}
}
EXPORT_SYMBOL(pcim_iounmap_regions);
#endif /* CONFIG_PCI */
#endif /* CONFIG_HAS_IOPORT */
Commit	Line	Data
5ea81769 AV	1	#include <linux/pci.h>
5ea81769 AV	2	#include <linux/io.h>
5a0e3ad6	3	#include <linux/gfp.h>
8bc3bcc9	4	#include <linux/export.h>
5ea81769	5
b41e5fff	6	void devm_ioremap_release(struct device dev, void res)
5ea81769 AV	7	{
	8	iounmap((void __iomem *)res);
	9	}
	10
	11	static int devm_ioremap_match(struct device dev, void res, void *match_data)
	12	{
	13	return (void *)res == match_data;
	14	}
	15
	16	/**
	17	* devm_ioremap - Managed ioremap()
	18	* @dev: Generic device to remap IO address for
	19	* @offset: BUS offset to map
	20	* @size: Size of map
	21	*
	22	* Managed ioremap(). Map is automatically unmapped on driver detach.
	23	*/
4f452e8a	24	void __iomem devm_ioremap(struct device dev, resource_size_t offset,
5ea81769 AV	25	unsigned long size)
	26	{
	27	void __iomem *ptr, addr;
	28
	29	ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
	30	if (!ptr)
	31	return NULL;
	32
	33	addr = ioremap(offset, size);
	34	if (addr) {
	35	*ptr = addr;
	36	devres_add(dev, ptr);
	37	} else
	38	devres_free(ptr);
	39
	40	return addr;
	41	}
	42	EXPORT_SYMBOL(devm_ioremap);
	43
	44	/**
	45	* devm_ioremap_nocache - Managed ioremap_nocache()
	46	* @dev: Generic device to remap IO address for
	47	* @offset: BUS offset to map
	48	* @size: Size of map
	49	*
	50	* Managed ioremap_nocache(). Map is automatically unmapped on driver
	51	* detach.
	52	*/
4f452e8a	53	void __iomem devm_ioremap_nocache(struct device dev, resource_size_t offset,
5ea81769 AV	54	unsigned long size)
	55	{
	56	void __iomem *ptr, addr;
	57
	58	ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
	59	if (!ptr)
	60	return NULL;
	61
	62	addr = ioremap_nocache(offset, size);
	63	if (addr) {
	64	*ptr = addr;
	65	devres_add(dev, ptr);
	66	} else
	67	devres_free(ptr);
	68
	69	return addr;
	70	}
	71	EXPORT_SYMBOL(devm_ioremap_nocache);
	72
	73	/**
	74	* devm_iounmap - Managed iounmap()
	75	* @dev: Generic device to unmap for
	76	* @addr: Address to unmap
	77	*
	78	* Managed iounmap(). @addr must have been mapped using devm_ioremap*().
	79	*/
	80	void devm_iounmap(struct device dev, void __iomem addr)
	81	{
5ea81769 AV	82	WARN_ON(devres_destroy(dev, devm_ioremap_release, devm_ioremap_match,
5ea81769 AV	83	(void *)addr));
ae891a1b	84	iounmap(addr);
5ea81769 AV	85	}
	86	EXPORT_SYMBOL(devm_iounmap);
	87
72f8c0bf WS	88	/**
	89	* devm_request_and_ioremap() - Check, request region, and ioremap resource
	90	* @dev: Generic device to handle the resource for
	91	* @res: resource to be handled
	92	*
	93	* Takes all necessary steps to ioremap a mem resource. Uses managed device, so
	94	* everything is undone on driver detach. Checks arguments, so you can feed
	95	* it the result from e.g. platform_get_resource() directly. Returns the
	96	* remapped pointer or NULL on error. Usage example:
	97	*
	98	* res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	99	* base = devm_request_and_ioremap(&pdev->dev, res);
	100	* if (!base)
	101	* return -EADDRNOTAVAIL;
	102	*/
	103	void __iomem devm_request_and_ioremap(struct device dev,
	104	struct resource *res)
	105	{
	106	resource_size_t size;
	107	const char *name;
	108	void __iomem *dest_ptr;
	109
	110	BUG_ON(!dev);
	111
	112	if (!res \|\| resource_type(res) != IORESOURCE_MEM) {
	113	dev_err(dev, "invalid resource\n");
	114	return NULL;
	115	}
	116
	117	size = resource_size(res);
	118	name = res->name ?: dev_name(dev);
	119
	120	if (!devm_request_mem_region(dev, res->start, size, name)) {
	121	dev_err(dev, "can't request region for resource %pR\n", res);
	122	return NULL;
	123	}
	124
	125	if (res->flags & IORESOURCE_CACHEABLE)
	126	dest_ptr = devm_ioremap(dev, res->start, size);
	127	else
	128	dest_ptr = devm_ioremap_nocache(dev, res->start, size);
	129
	130	if (!dest_ptr) {
	131	dev_err(dev, "ioremap failed for resource %pR\n", res);
	132	devm_release_mem_region(dev, res->start, size);
	133	}
	134
	135	return dest_ptr;
	136	}
	137	EXPORT_SYMBOL(devm_request_and_ioremap);
	138
5ea81769 AV	139	#ifdef CONFIG_HAS_IOPORT
	140	/*
	141	* Generic iomap devres
	142	*/
	143	static void devm_ioport_map_release(struct device dev, void res)
	144	{
	145	ioport_unmap((void __iomem *)res);
	146	}
	147
	148	static int devm_ioport_map_match(struct device dev, void res,
	149	void *match_data)
	150	{
	151	return (void *)res == match_data;
	152	}
	153
	154	/**
	155	* devm_ioport_map - Managed ioport_map()
	156	* @dev: Generic device to map ioport for
	157	* @port: Port to map
	158	* @nr: Number of ports to map
	159	*
	160	* Managed ioport_map(). Map is automatically unmapped on driver
	161	* detach.
	162	*/
	163	void __iomem * devm_ioport_map(struct device *dev, unsigned long port,
	164	unsigned int nr)
	165	{
	166	void __iomem *ptr, addr;
	167
	168	ptr = devres_alloc(devm_ioport_map_release, sizeof(*ptr), GFP_KERNEL);
	169	if (!ptr)
	170	return NULL;
	171
	172	addr = ioport_map(port, nr);
	173	if (addr) {
	174	*ptr = addr;
	175	devres_add(dev, ptr);
	176	} else
	177	devres_free(ptr);
	178
	179	return addr;
	180	}
	181	EXPORT_SYMBOL(devm_ioport_map);
	182
	183	/**
	184	* devm_ioport_unmap - Managed ioport_unmap()
	185	* @dev: Generic device to unmap for
	186	* @addr: Address to unmap
	187	*
	188	* Managed ioport_unmap(). @addr must have been mapped using
	189	* devm_ioport_map().
	190	*/
	191	void devm_ioport_unmap(struct device dev, void __iomem addr)
	192	{
	193	ioport_unmap(addr);
	194	WARN_ON(devres_destroy(dev, devm_ioport_map_release,
	195	devm_ioport_map_match, (void *)addr));
	196	}
	197	EXPORT_SYMBOL(devm_ioport_unmap);
	198
	199	#ifdef CONFIG_PCI
	200	/*
	201	* PCI iomap devres
	202	*/
203	#define PCIM_IOMAP_MAX PCI_ROM_RESOURCE
204
205	struct pcim_iomap_devres {
206	void __iomem *table[PCIM_IOMAP_MAX];
207	};
208
209	static void pcim_iomap_release(struct device gendev, void res)
210	{
211	struct pci_dev *dev = container_of(gendev, struct pci_dev, dev);
212	struct pcim_iomap_devres *this = res;
213	int i;
214
215	for (i = 0; i < PCIM_IOMAP_MAX; i++)
216	if (this->table[i])
217	pci_iounmap(dev, this->table[i]);
218	}
219
220	/**
221	* pcim_iomap_table - access iomap allocation table
222	* @pdev: PCI device to access iomap table for
223	*
224	* Access iomap allocation table for @dev. If iomap table doesn't
225	* exist and @pdev is managed, it will be allocated. All iomaps
226	* recorded in the iomap table are automatically unmapped on driver
227	* detach.
228	*
229	* This function might sleep when the table is first allocated but can
230	* be safely called without context and guaranteed to succed once
231	* allocated.
232	*/
233	void __iomem * const * pcim_iomap_table(struct pci_dev *pdev)
234	{
235	struct pcim_iomap_devres dr, new_dr;
236
237	dr = devres_find(&pdev->dev, pcim_iomap_release, NULL, NULL);
238	if (dr)
239	return dr->table;
240
241	new_dr = devres_alloc(pcim_iomap_release, sizeof(*new_dr), GFP_KERNEL);
242	if (!new_dr)
243	return NULL;
244	dr = devres_get(&pdev->dev, new_dr, NULL, NULL);
245	return dr->table;
246	}
247	EXPORT_SYMBOL(pcim_iomap_table);
248
249	/**
250	* pcim_iomap - Managed pcim_iomap()
251	* @pdev: PCI device to iomap for
252	* @bar: BAR to iomap
253	* @maxlen: Maximum length of iomap
254	*
255	* Managed pci_iomap(). Map is automatically unmapped on driver
256	* detach.
257	*/
258	void __iomem * pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen)
259	{
260	void __iomem **tbl;
261
262	BUG_ON(bar >= PCIM_IOMAP_MAX);
263
264	tbl = (void __iomem **)pcim_iomap_table(pdev);
265	if (!tbl \|\| tbl[bar]) /* duplicate mappings not allowed */
266	return NULL;
267
268	tbl[bar] = pci_iomap(pdev, bar, maxlen);
269	return tbl[bar];
270	}
271	EXPORT_SYMBOL(pcim_iomap);
272
273	/**
274	* pcim_iounmap - Managed pci_iounmap()
275	* @pdev: PCI device to iounmap for
276	* @addr: Address to unmap
277	*
278	* Managed pci_iounmap(). @addr must have been mapped using pcim_iomap().
279	*/
280	void pcim_iounmap(struct pci_dev pdev, void __iomem addr)
281	{
282	void __iomem **tbl;
283	int i;
284
285	pci_iounmap(pdev, addr);
286
287	tbl = (void __iomem **)pcim_iomap_table(pdev);
288	BUG_ON(!tbl);
289
290	for (i = 0; i < PCIM_IOMAP_MAX; i++)
291	if (tbl[i] == addr) {
292	tbl[i] = NULL;
293	return;
294	}
295	WARN_ON(1);
296	}
297	EXPORT_SYMBOL(pcim_iounmap);
298
299	/**
300	* pcim_iomap_regions - Request and iomap PCI BARs
301	* @pdev: PCI device to map IO resources for
302	* @mask: Mask of BARs to request and iomap
303	* @name: Name used when requesting regions
304	*
305	* Request and iomap regions specified by @mask.
306	*/
fb7ebfe4	307	int pcim_iomap_regions(struct pci_dev pdev, int mask, const char name)
5ea81769 AV	308	{
	309	void __iomem * const *iomap;
	310	int i, rc;
	311
	312	iomap = pcim_iomap_table(pdev);
	313	if (!iomap)
	314	return -ENOMEM;
	315
	316	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
	317	unsigned long len;
	318
	319	if (!(mask & (1 << i)))
	320	continue;
	321
	322	rc = -EINVAL;
	323	len = pci_resource_len(pdev, i);
	324	if (!len)
	325	goto err_inval;
	326
	327	rc = pci_request_region(pdev, i, name);
	328	if (rc)
fb4d64e7	329	goto err_inval;
5ea81769 AV	330
	331	rc = -ENOMEM;
	332	if (!pcim_iomap(pdev, i, 0))
fb4d64e7	333	goto err_region;
5ea81769 AV	334	}
	335
	336	return 0;
	337
5ea81769 AV	338	err_region:
	339	pci_release_region(pdev, i);
	340	err_inval:
	341	while (--i >= 0) {
fb4d64e7 FD	342	if (!(mask & (1 << i)))
fb4d64e7 FD	343	continue;
5ea81769 AV	344	pcim_iounmap(pdev, iomap[i]);
	345	pci_release_region(pdev, i);
	346	}
	347
	348	return rc;
	349	}
	350	EXPORT_SYMBOL(pcim_iomap_regions);
ec04b075	351
916fbfb7 TH	352	/**
	353	* pcim_iomap_regions_request_all - Request all BARs and iomap specified ones
	354	* @pdev: PCI device to map IO resources for
	355	* @mask: Mask of BARs to iomap
	356	* @name: Name used when requesting regions
	357	*
	358	* Request all PCI BARs and iomap regions specified by @mask.
	359	*/
fb7ebfe4	360	int pcim_iomap_regions_request_all(struct pci_dev *pdev, int mask,
916fbfb7 TH	361	const char *name)
	362	{
	363	int request_mask = ((1 << 6) - 1) & ~mask;
	364	int rc;
	365
	366	rc = pci_request_selected_regions(pdev, request_mask, name);
	367	if (rc)
	368	return rc;
	369
	370	rc = pcim_iomap_regions(pdev, mask, name);
	371	if (rc)
	372	pci_release_selected_regions(pdev, request_mask);
	373	return rc;
	374	}
	375	EXPORT_SYMBOL(pcim_iomap_regions_request_all);
	376
ec04b075 TH	377	/**
	378	* pcim_iounmap_regions - Unmap and release PCI BARs
	379	* @pdev: PCI device to map IO resources for
	380	* @mask: Mask of BARs to unmap and release
	381	*
4d45ada3	382	* Unmap and release regions specified by @mask.
ec04b075	383	*/
fb7ebfe4	384	void pcim_iounmap_regions(struct pci_dev *pdev, int mask)
ec04b075 TH	385	{
	386	void __iomem * const *iomap;
	387	int i;
	388
	389	iomap = pcim_iomap_table(pdev);
	390	if (!iomap)
	391	return;
	392
	393	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
	394	if (!(mask & (1 << i)))
	395	continue;
	396
	397	pcim_iounmap(pdev, iomap[i]);
	398	pci_release_region(pdev, i);
	399	}
	400	}
	401	EXPORT_SYMBOL(pcim_iounmap_regions);
571806a9 WS	402	#endif /* CONFIG_PCI */
571806a9 WS	403	#endif /* CONFIG_HAS_IOPORT */