#include <linux/pci.h>
#include <linux/io.h>
-#ifdef CONFIG_GENERIC_IOMAP
#include <linux/module.h>
/*
#define PIO_RESERVED 0x40000UL
#endif
+static void bad_io_access(unsigned long port, const char *access)
+{
+ static int count = 10;
+ if (count) {
+ count--;
+ printk(KERN_ERR "Bad IO access at port %lx (%s)\n", port, access);
+ WARN_ON(1);
+ }
+}
+
/*
* Ugly macros are a way of life.
*/
-#define VERIFY_PIO(port) BUG_ON((port & ~PIO_MASK) != PIO_OFFSET)
-
#define IO_COND(addr, is_pio, is_mmio) do { \
unsigned long port = (unsigned long __force)addr; \
- if (port < PIO_RESERVED) { \
- VERIFY_PIO(port); \
+ if (port >= PIO_RESERVED) { \
+ is_mmio; \
+ } else if (port > PIO_OFFSET) { \
port &= PIO_MASK; \
is_pio; \
- } else { \
- is_mmio; \
- } \
+ } else \
+ bad_io_access(port, #is_pio ); \
} while (0)
#ifndef pio_read16be
unsigned int fastcall ioread8(void __iomem *addr)
{
IO_COND(addr, return inb(port), return readb(addr));
+ return 0xff;
}
unsigned int fastcall ioread16(void __iomem *addr)
{
IO_COND(addr, return inw(port), return readw(addr));
+ return 0xffff;
}
unsigned int fastcall ioread16be(void __iomem *addr)
{
IO_COND(addr, return pio_read16be(port), return mmio_read16be(addr));
+ return 0xffff;
}
unsigned int fastcall ioread32(void __iomem *addr)
{
IO_COND(addr, return inl(port), return readl(addr));
+ return 0xffffffff;
}
unsigned int fastcall ioread32be(void __iomem *addr)
{
IO_COND(addr, return pio_read32be(port), return mmio_read32be(addr));
+ return 0xffffffff;
}
EXPORT_SYMBOL(ioread8);
EXPORT_SYMBOL(ioread16);
}
EXPORT_SYMBOL(pci_iomap);
EXPORT_SYMBOL(pci_iounmap);
-
-#endif /* CONFIG_GENERIC_IOMAP */
-
-/*
- * 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);
-
-static 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, unsigned long 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, unsigned long 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)
-{
- iounmap(addr);
- WARN_ON(devres_destroy(dev, devm_ioremap_release, devm_ioremap_match,
- (void *)addr));
-}
-EXPORT_SYMBOL(devm_iounmap);
-
-/*
- * 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, u16 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_region;
-
- rc = -ENOMEM;
- if (!pcim_iomap(pdev, i, 0))
- goto err_iomap;
- }
-
- return 0;
-
- err_iomap:
- pcim_iounmap(pdev, iomap[i]);
- err_region:
- pci_release_region(pdev, i);
- err_inval:
- while (--i >= 0) {
- pcim_iounmap(pdev, iomap[i]);
- pci_release_region(pdev, i);
- }
-
- return rc;
-}
-EXPORT_SYMBOL(pcim_iomap_regions);
git.samba.org / sfrench / cifs-2.6.git / blobdiff