PCI: Add ability to mmap legacy_io on some platforms

This adds the ability to mmap legacy IO space to the legacy_io files
in sysfs on platforms that support it. This will allow to clean up
X to use this instead of /dev/mem for legacy IO accesses such as
those performed by Int10.

While at it I moved pci_create/remove_legacy_files() to pci-sysfs.c
where I think they belong, thus making more things statis in there
and cleaned up some spurrious prototypes in the ia64 pci.h file

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 0 insertions, 66 deletions

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index afb9f1c..aaaf0a1 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -42,72 +42,6 @@ int no_pci_devices(void)
 }
 EXPORT_SYMBOL(no_pci_devices);
 
-#ifdef HAVE_PCI_LEGACY
-/**
- * pci_create_legacy_files - create legacy I/O port and memory files
- * @b: bus to create files under
- *
- * Some platforms allow access to legacy I/O port and ISA memory space on
- * a per-bus basis.  This routine creates the files and ties them into
- * their associated read, write and mmap files from pci-sysfs.c
- *
- * On error unwind, but don't propogate the error to the caller
- * as it is ok to set up the PCI bus without these files.
- */
-static void pci_create_legacy_files(struct pci_bus *b)
-{
-	int error;
-
-	b->legacy_io = kzalloc(sizeof(struct bin_attribute) * 2,
-			       GFP_ATOMIC);
-	if (!b->legacy_io)
-		goto kzalloc_err;
-
-	b->legacy_io->attr.name = "legacy_io";
-	b->legacy_io->size = 0xffff;
-	b->legacy_io->attr.mode = S_IRUSR | S_IWUSR;
-	b->legacy_io->read = pci_read_legacy_io;
-	b->legacy_io->write = pci_write_legacy_io;
-	error = device_create_bin_file(&b->dev, b->legacy_io);
-	if (error)
-		goto legacy_io_err;
-
-	/* Allocated above after the legacy_io struct */
-	b->legacy_mem = b->legacy_io + 1;
-	b->legacy_mem->attr.name = "legacy_mem";
-	b->legacy_mem->size = 1024*1024;
-	b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR;
-	b->legacy_mem->mmap = pci_mmap_legacy_mem;
-	error = device_create_bin_file(&b->dev, b->legacy_mem);
-	if (error)
-		goto legacy_mem_err;
-
-	return;
-
-legacy_mem_err:
-	device_remove_bin_file(&b->dev, b->legacy_io);
-legacy_io_err:
-	kfree(b->legacy_io);
-	b->legacy_io = NULL;
-kzalloc_err:
-	printk(KERN_WARNING "pci: warning: could not create legacy I/O port "
-	       "and ISA memory resources to sysfs\n");
-	return;
-}
-
-void pci_remove_legacy_files(struct pci_bus *b)
-{
-	if (b->legacy_io) {
-		device_remove_bin_file(&b->dev, b->legacy_io);
-		device_remove_bin_file(&b->dev, b->legacy_mem);
-		kfree(b->legacy_io); /* both are allocated here */
-	}
-}
-#else /* !HAVE_PCI_LEGACY */
-static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
-void pci_remove_legacy_files(struct pci_bus *bus) { return; }
-#endif /* HAVE_PCI_LEGACY */
-
 /*
  * PCI Bus Class Devices
  */