// SPDX-License-Identifier: GPL-2.0
+#include <linux/device.h>
#include <linux/err.h>
-#include <linux/pci.h>
#include <linux/io.h>
#include <linux/gfp.h>
#include <linux/export.h>
EXPORT_SYMBOL(devm_ioport_unmap);
#endif /* CONFIG_HAS_IOPORT_MAP */
-#ifdef CONFIG_PCI
-/*
- * PCI iomap devres
- */
-#define PCIM_IOMAP_MAX PCI_STD_NUM_BARS
-
-struct pcim_iomap_devres {
- void __iomem *table[PCIM_IOMAP_MAX];
-};
-
-static void pcim_iomap_release(struct device *gendev, void *res)
-{
- struct pci_dev *dev = to_pci_dev(gendev);
- 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 succeed 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_node(pcim_iomap_release, sizeof(*new_dr), GFP_KERNEL,
- dev_to_node(&pdev->dev));
- 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 < PCIM_IOMAP_MAX; i++) {
- if (!(mask & (1 << i)))
- continue;
-
- pcim_iounmap(pdev, iomap[i]);
- pci_release_region(pdev, i);
- }
-}
-EXPORT_SYMBOL(pcim_iounmap_regions);
-#endif /* CONFIG_PCI */
-
static void devm_arch_phys_ac_add_release(struct device *dev, void *res)
{
arch_phys_wc_del(*((int *)res));
projects / linux-2.6-block.git / blobdiff