2013-01-22 14:24:46 -07:00
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#include <linux/err.h>
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2007-02-11 08:41:31 -07:00
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#include <linux/pci.h>
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#include <linux/io.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 02:04:11 -06:00
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#include <linux/gfp.h>
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2011-11-16 19:29:17 -07:00
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#include <linux/export.h>
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2007-02-11 08:41:31 -07:00
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2008-05-02 14:34:04 -06:00
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void devm_ioremap_release(struct device *dev, void *res)
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2007-02-11 08:41:31 -07:00
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{
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iounmap(*(void __iomem **)res);
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}
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static int devm_ioremap_match(struct device *dev, void *res, void *match_data)
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{
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return *(void **)res == match_data;
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}
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/**
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* devm_ioremap - Managed ioremap()
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* @dev: Generic device to remap IO address for
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* @offset: BUS offset to map
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* @size: Size of map
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*
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* Managed ioremap(). Map is automatically unmapped on driver detach.
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*/
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2008-04-29 09:25:48 -06:00
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void __iomem *devm_ioremap(struct device *dev, resource_size_t offset,
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2007-02-11 08:41:31 -07:00
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unsigned long size)
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{
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void __iomem **ptr, *addr;
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ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
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if (!ptr)
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return NULL;
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addr = ioremap(offset, size);
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if (addr) {
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*ptr = addr;
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devres_add(dev, ptr);
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} else
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devres_free(ptr);
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return addr;
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}
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EXPORT_SYMBOL(devm_ioremap);
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/**
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* devm_ioremap_nocache - Managed ioremap_nocache()
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* @dev: Generic device to remap IO address for
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* @offset: BUS offset to map
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* @size: Size of map
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*
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* Managed ioremap_nocache(). Map is automatically unmapped on driver
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* detach.
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*/
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2008-04-29 09:25:48 -06:00
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void __iomem *devm_ioremap_nocache(struct device *dev, resource_size_t offset,
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2007-02-11 08:41:31 -07:00
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unsigned long size)
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{
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void __iomem **ptr, *addr;
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ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
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if (!ptr)
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return NULL;
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addr = ioremap_nocache(offset, size);
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if (addr) {
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*ptr = addr;
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devres_add(dev, ptr);
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} else
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devres_free(ptr);
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return addr;
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}
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EXPORT_SYMBOL(devm_ioremap_nocache);
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/**
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* devm_iounmap - Managed iounmap()
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* @dev: Generic device to unmap for
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* @addr: Address to unmap
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*
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* Managed iounmap(). @addr must have been mapped using devm_ioremap*().
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*/
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void devm_iounmap(struct device *dev, void __iomem *addr)
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{
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WARN_ON(devres_destroy(dev, devm_ioremap_release, devm_ioremap_match,
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2014-04-03 15:49:07 -06:00
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(__force void *)addr));
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2011-07-25 18:12:59 -06:00
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iounmap(addr);
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2007-02-11 08:41:31 -07:00
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}
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EXPORT_SYMBOL(devm_iounmap);
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2014-04-03 15:49:07 -06:00
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#define IOMEM_ERR_PTR(err) (__force void __iomem *)ERR_PTR(err)
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2011-10-25 07:16:47 -06:00
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/**
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2013-01-21 03:08:54 -07:00
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* devm_ioremap_resource() - check, request region, and ioremap resource
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* @dev: generic device to handle the resource for
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2011-10-25 07:16:47 -06:00
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* @res: resource to be handled
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*
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2013-01-21 03:08:54 -07:00
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* Checks that a resource is a valid memory region, requests the memory region
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* and ioremaps it either as cacheable or as non-cacheable memory depending on
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* the resource's flags. All operations are managed and will be undone on
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* driver detach.
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*
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* Returns a pointer to the remapped memory or an ERR_PTR() encoded error code
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* on failure. Usage example:
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2011-10-25 07:16:47 -06:00
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*
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* res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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2013-01-21 03:08:54 -07:00
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* base = devm_ioremap_resource(&pdev->dev, res);
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* if (IS_ERR(base))
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* return PTR_ERR(base);
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2011-10-25 07:16:47 -06:00
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*/
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2013-01-21 03:08:54 -07:00
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void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res)
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2011-10-25 07:16:47 -06:00
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{
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resource_size_t size;
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const char *name;
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void __iomem *dest_ptr;
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BUG_ON(!dev);
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if (!res || resource_type(res) != IORESOURCE_MEM) {
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dev_err(dev, "invalid resource\n");
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2014-04-03 15:49:07 -06:00
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return IOMEM_ERR_PTR(-EINVAL);
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2011-10-25 07:16:47 -06:00
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}
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size = resource_size(res);
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name = res->name ?: dev_name(dev);
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if (!devm_request_mem_region(dev, res->start, size, name)) {
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dev_err(dev, "can't request region for resource %pR\n", res);
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2014-04-03 15:49:07 -06:00
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return IOMEM_ERR_PTR(-EBUSY);
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2011-10-25 07:16:47 -06:00
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}
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if (res->flags & IORESOURCE_CACHEABLE)
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dest_ptr = devm_ioremap(dev, res->start, size);
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else
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dest_ptr = devm_ioremap_nocache(dev, res->start, size);
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if (!dest_ptr) {
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dev_err(dev, "ioremap failed for resource %pR\n", res);
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devm_release_mem_region(dev, res->start, size);
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2014-04-03 15:49:07 -06:00
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dest_ptr = IOMEM_ERR_PTR(-ENOMEM);
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2011-10-25 07:16:47 -06:00
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}
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return dest_ptr;
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}
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2013-01-21 03:08:54 -07:00
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EXPORT_SYMBOL(devm_ioremap_resource);
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/**
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* devm_request_and_ioremap() - Check, request region, and ioremap resource
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* @dev: Generic device to handle the resource for
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* @res: resource to be handled
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*
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* Takes all necessary steps to ioremap a mem resource. Uses managed device, so
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* everything is undone on driver detach. Checks arguments, so you can feed
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* it the result from e.g. platform_get_resource() directly. Returns the
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* remapped pointer or NULL on error. Usage example:
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*
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* res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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* base = devm_request_and_ioremap(&pdev->dev, res);
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* if (!base)
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* return -EADDRNOTAVAIL;
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*/
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void __iomem *devm_request_and_ioremap(struct device *device,
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struct resource *res)
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{
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void __iomem *dest_ptr;
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dest_ptr = devm_ioremap_resource(device, res);
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if (IS_ERR(dest_ptr))
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return NULL;
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return dest_ptr;
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}
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2011-10-25 07:16:47 -06:00
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EXPORT_SYMBOL(devm_request_and_ioremap);
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2014-04-07 16:39:19 -06:00
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#ifdef CONFIG_HAS_IOPORT_MAP
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2007-02-11 08:41:31 -07:00
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/*
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* Generic iomap devres
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*/
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static void devm_ioport_map_release(struct device *dev, void *res)
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{
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ioport_unmap(*(void __iomem **)res);
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}
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static int devm_ioport_map_match(struct device *dev, void *res,
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void *match_data)
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{
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return *(void **)res == match_data;
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}
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/**
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* devm_ioport_map - Managed ioport_map()
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* @dev: Generic device to map ioport for
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* @port: Port to map
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* @nr: Number of ports to map
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*
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* Managed ioport_map(). Map is automatically unmapped on driver
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* detach.
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*/
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void __iomem * devm_ioport_map(struct device *dev, unsigned long port,
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unsigned int nr)
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{
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void __iomem **ptr, *addr;
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ptr = devres_alloc(devm_ioport_map_release, sizeof(*ptr), GFP_KERNEL);
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if (!ptr)
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return NULL;
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addr = ioport_map(port, nr);
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if (addr) {
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*ptr = addr;
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devres_add(dev, ptr);
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} else
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devres_free(ptr);
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return addr;
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}
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EXPORT_SYMBOL(devm_ioport_map);
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/**
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* devm_ioport_unmap - Managed ioport_unmap()
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* @dev: Generic device to unmap for
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* @addr: Address to unmap
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*
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* Managed ioport_unmap(). @addr must have been mapped using
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* devm_ioport_map().
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*/
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void devm_ioport_unmap(struct device *dev, void __iomem *addr)
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{
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ioport_unmap(addr);
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WARN_ON(devres_destroy(dev, devm_ioport_map_release,
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2014-04-03 15:49:07 -06:00
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devm_ioport_map_match, (__force void *)addr));
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2007-02-11 08:41:31 -07:00
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}
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EXPORT_SYMBOL(devm_ioport_unmap);
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2014-04-07 16:39:19 -06:00
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#endif /* CONFIG_HAS_IOPORT_MAP */
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2007-02-11 08:41:31 -07:00
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#ifdef CONFIG_PCI
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/*
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* PCI iomap devres
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*/
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#define PCIM_IOMAP_MAX PCI_ROM_RESOURCE
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struct pcim_iomap_devres {
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void __iomem *table[PCIM_IOMAP_MAX];
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};
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static void pcim_iomap_release(struct device *gendev, void *res)
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{
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struct pci_dev *dev = container_of(gendev, struct pci_dev, dev);
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struct pcim_iomap_devres *this = res;
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int i;
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for (i = 0; i < PCIM_IOMAP_MAX; i++)
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if (this->table[i])
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pci_iounmap(dev, this->table[i]);
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}
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/**
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* pcim_iomap_table - access iomap allocation table
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* @pdev: PCI device to access iomap table for
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*
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* Access iomap allocation table for @dev. If iomap table doesn't
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* exist and @pdev is managed, it will be allocated. All iomaps
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* recorded in the iomap table are automatically unmapped on driver
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* detach.
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*
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* This function might sleep when the table is first allocated but can
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* be safely called without context and guaranteed to succed once
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* allocated.
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*/
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void __iomem * const * pcim_iomap_table(struct pci_dev *pdev)
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{
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struct pcim_iomap_devres *dr, *new_dr;
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dr = devres_find(&pdev->dev, pcim_iomap_release, NULL, NULL);
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if (dr)
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return dr->table;
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new_dr = devres_alloc(pcim_iomap_release, sizeof(*new_dr), GFP_KERNEL);
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if (!new_dr)
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return NULL;
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dr = devres_get(&pdev->dev, new_dr, NULL, NULL);
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return dr->table;
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}
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EXPORT_SYMBOL(pcim_iomap_table);
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/**
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* pcim_iomap - Managed pcim_iomap()
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* @pdev: PCI device to iomap for
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* @bar: BAR to iomap
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* @maxlen: Maximum length of iomap
|
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*
|
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|
|
* Managed pci_iomap(). Map is automatically unmapped on driver
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* detach.
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*/
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void __iomem * pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen)
|
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{
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|
|
void __iomem **tbl;
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|
|
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.
|
|
|
|
*/
|
2012-01-04 16:50:02 -07:00
|
|
|
int pcim_iomap_regions(struct pci_dev *pdev, int mask, const char *name)
|
2007-02-11 08:41:31 -07:00
|
|
|
{
|
|
|
|
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)
|
2007-02-16 02:27:15 -07:00
|
|
|
goto err_inval;
|
2007-02-11 08:41:31 -07:00
|
|
|
|
|
|
|
rc = -ENOMEM;
|
|
|
|
if (!pcim_iomap(pdev, i, 0))
|
2007-02-16 02:27:15 -07:00
|
|
|
goto err_region;
|
2007-02-11 08:41:31 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_region:
|
|
|
|
pci_release_region(pdev, i);
|
|
|
|
err_inval:
|
|
|
|
while (--i >= 0) {
|
2007-02-16 02:27:15 -07:00
|
|
|
if (!(mask & (1 << i)))
|
|
|
|
continue;
|
2007-02-11 08:41:31 -07:00
|
|
|
pcim_iounmap(pdev, iomap[i]);
|
|
|
|
pci_release_region(pdev, i);
|
|
|
|
}
|
|
|
|
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(pcim_iomap_regions);
|
2007-03-09 03:45:58 -07:00
|
|
|
|
2008-03-12 00:26:34 -06:00
|
|
|
/**
|
|
|
|
* 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.
|
|
|
|
*/
|
2012-01-04 16:50:02 -07:00
|
|
|
int pcim_iomap_regions_request_all(struct pci_dev *pdev, int mask,
|
2008-03-12 00:26:34 -06:00
|
|
|
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);
|
|
|
|
|
2007-03-09 03:45:58 -07:00
|
|
|
/**
|
|
|
|
* pcim_iounmap_regions - Unmap and release PCI BARs
|
|
|
|
* @pdev: PCI device to map IO resources for
|
|
|
|
* @mask: Mask of BARs to unmap and release
|
|
|
|
*
|
2010-07-10 04:07:41 -06:00
|
|
|
* Unmap and release regions specified by @mask.
|
2007-03-09 03:45:58 -07:00
|
|
|
*/
|
2012-01-04 16:50:02 -07:00
|
|
|
void pcim_iounmap_regions(struct pci_dev *pdev, int mask)
|
2007-03-09 03:45:58 -07:00
|
|
|
{
|
|
|
|
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);
|
2011-10-25 07:03:42 -06:00
|
|
|
#endif /* CONFIG_PCI */
|