* Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific
* callback routine (pci_legacy_read).
*/
-ssize_t
+static ssize_t
pci_read_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
* Writes 1, 2, or 4 bytes from legacy I/O port space using an arch specific
* callback routine (pci_legacy_write).
*/
-ssize_t
+static ssize_t
pci_write_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
* @attr: struct bin_attribute for this file
* @vma: struct vm_area_struct passed to mmap
*
- * Uses an arch specific callback, pci_mmap_legacy_page_range, to mmap
+ * Uses an arch specific callback, pci_mmap_legacy_mem_page_range, to mmap
* legacy memory space (first meg of bus space) into application virtual
* memory space.
*/
-int
+static int
pci_mmap_legacy_mem(struct kobject *kobj, struct bin_attribute *attr,
struct vm_area_struct *vma)
{
struct device,
kobj));
- return pci_mmap_legacy_page_range(bus, vma);
+ return pci_mmap_legacy_page_range(bus, vma, pci_mmap_mem);
+}
+
+/**
+ * pci_mmap_legacy_io - map legacy PCI IO into user memory space
+ * @kobj: kobject corresponding to device to be mapped
+ * @attr: struct bin_attribute for this file
+ * @vma: struct vm_area_struct passed to mmap
+ *
+ * Uses an arch specific callback, pci_mmap_legacy_io_page_range, to mmap
+ * legacy IO space (first meg of bus space) into application virtual
+ * memory space. Returns -ENOSYS if the operation isn't supported
+ */
+static int
+pci_mmap_legacy_io(struct kobject *kobj, struct bin_attribute *attr,
+ struct vm_area_struct *vma)
+{
+ struct pci_bus *bus = to_pci_bus(container_of(kobj,
+ struct device,
+ kobj));
+
+ return pci_mmap_legacy_page_range(bus, vma, pci_mmap_io);
+}
+
+/**
+ * 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.
+ */
+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;
+ b->legacy_io->mmap = pci_mmap_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 */
+ }
}
#endif /* HAVE_PCI_LEGACY */
nr = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
start = vma->vm_pgoff;
- size = pci_resource_len(pdev, resno) >> PAGE_SHIFT;
+ size = ((pci_resource_len(pdev, resno) - 1) >> PAGE_SHIFT) + 1;
if (start < size && size - start >= nr)
return 1;
WARN(1, "process \"%s\" tried to map 0x%08lx-0x%08lx on %s BAR %d (size 0x%08lx)\n",
.name = "config",
.mode = S_IRUGO | S_IWUSR,
},
- .size = 256,
+ .size = PCI_CFG_SPACE_SIZE,
.read = pci_read_config,
.write = pci_write_config,
};
.name = "config",
.mode = S_IRUGO | S_IWUSR,
},
- .size = 4096,
+ .size = PCI_CFG_SPACE_EXP_SIZE,
.read = pci_read_config,
.write = pci_write_config,
};
return 0;
}
+static int pci_create_capabilities_sysfs(struct pci_dev *dev)
+{
+ int retval;
+ struct bin_attribute *attr;
+
+ /* If the device has VPD, try to expose it in sysfs. */
+ if (dev->vpd) {
+ attr = kzalloc(sizeof(*attr), GFP_ATOMIC);
+ if (!attr)
+ return -ENOMEM;
+
+ attr->size = dev->vpd->len;
+ attr->attr.name = "vpd";
+ attr->attr.mode = S_IRUSR | S_IWUSR;
+ attr->read = pci_read_vpd;
+ attr->write = pci_write_vpd;
+ retval = sysfs_create_bin_file(&dev->dev.kobj, attr);
+ if (retval) {
+ kfree(dev->vpd->attr);
+ return retval;
+ }
+ dev->vpd->attr = attr;
+ }
+
+ /* Active State Power Management */
+ pcie_aspm_create_sysfs_dev_files(dev);
+
+ return 0;
+}
+
int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
{
- struct bin_attribute *attr = NULL;
int retval;
+ int rom_size = 0;
+ struct bin_attribute *attr;
if (!sysfs_initialized)
return -EACCES;
- if (pdev->cfg_size < 4096)
+ if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)
retval = sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr);
else
retval = sysfs_create_bin_file(&pdev->dev.kobj, &pcie_config_attr);
if (retval)
goto err;
- /* If the device has VPD, try to expose it in sysfs. */
- if (pdev->vpd) {
- attr = kzalloc(sizeof(*attr), GFP_ATOMIC);
- if (attr) {
- pdev->vpd->attr = attr;
- attr->size = pdev->vpd->len;
- attr->attr.name = "vpd";
- attr->attr.mode = S_IRUSR | S_IWUSR;
- attr->read = pci_read_vpd;
- attr->write = pci_write_vpd;
- retval = sysfs_create_bin_file(&pdev->dev.kobj, attr);
- if (retval)
- goto err_vpd;
- } else {
- retval = -ENOMEM;
- goto err_config_file;
- }
- }
-
retval = pci_create_resource_files(pdev);
if (retval)
- goto err_vpd_file;
+ goto err_config_file;
+
+ if (pci_resource_len(pdev, PCI_ROM_RESOURCE))
+ rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE);
+ else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW)
+ rom_size = 0x20000;
/* If the device has a ROM, try to expose it in sysfs. */
- if (pci_resource_len(pdev, PCI_ROM_RESOURCE) ||
- (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW)) {
+ if (rom_size) {
attr = kzalloc(sizeof(*attr), GFP_ATOMIC);
- if (attr) {
- pdev->rom_attr = attr;
- attr->size = pci_resource_len(pdev, PCI_ROM_RESOURCE);
- attr->attr.name = "rom";
- attr->attr.mode = S_IRUSR;
- attr->read = pci_read_rom;
- attr->write = pci_write_rom;
- retval = sysfs_create_bin_file(&pdev->dev.kobj, attr);
- if (retval)
- goto err_rom;
- } else {
+ if (!attr) {
retval = -ENOMEM;
goto err_resource_files;
}
+ attr->size = rom_size;
+ attr->attr.name = "rom";
+ attr->attr.mode = S_IRUSR;
+ attr->read = pci_read_rom;
+ attr->write = pci_write_rom;
+ retval = sysfs_create_bin_file(&pdev->dev.kobj, attr);
+ if (retval) {
+ kfree(attr);
+ goto err_resource_files;
+ }
+ pdev->rom_attr = attr;
}
+
/* add platform-specific attributes */
- if (pcibios_add_platform_entries(pdev))
+ retval = pcibios_add_platform_entries(pdev);
+ if (retval)
goto err_rom_file;
- pcie_aspm_create_sysfs_dev_files(pdev);
+ /* add sysfs entries for various capabilities */
+ retval = pci_create_capabilities_sysfs(pdev);
+ if (retval)
+ goto err_rom_file;
return 0;
err_rom_file:
- if (pci_resource_len(pdev, PCI_ROM_RESOURCE))
+ if (rom_size) {
sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr);
-err_rom:
- kfree(pdev->rom_attr);
+ kfree(pdev->rom_attr);
+ pdev->rom_attr = NULL;
+ }
err_resource_files:
pci_remove_resource_files(pdev);
-err_vpd_file:
- if (pdev->vpd) {
- sysfs_remove_bin_file(&pdev->dev.kobj, pdev->vpd->attr);
-err_vpd:
- kfree(pdev->vpd->attr);
- }
err_config_file:
- if (pdev->cfg_size < 4096)
+ if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)
sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
else
sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr);
return retval;
}
+static void pci_remove_capabilities_sysfs(struct pci_dev *dev)
+{
+ if (dev->vpd && dev->vpd->attr) {
+ sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr);
+ kfree(dev->vpd->attr);
+ }
+
+ pcie_aspm_remove_sysfs_dev_files(dev);
+}
+
/**
* pci_remove_sysfs_dev_files - cleanup PCI specific sysfs files
* @pdev: device whose entries we should free
*/
void pci_remove_sysfs_dev_files(struct pci_dev *pdev)
{
+ int rom_size = 0;
+
if (!sysfs_initialized)
return;
- pcie_aspm_remove_sysfs_dev_files(pdev);
+ pci_remove_capabilities_sysfs(pdev);
- if (pdev->vpd) {
- sysfs_remove_bin_file(&pdev->dev.kobj, pdev->vpd->attr);
- kfree(pdev->vpd->attr);
- }
- if (pdev->cfg_size < 4096)
+ if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)
sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
else
sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr);
pci_remove_resource_files(pdev);
- if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) {
- if (pdev->rom_attr) {
- sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr);
- kfree(pdev->rom_attr);
- }
+ if (pci_resource_len(pdev, PCI_ROM_RESOURCE))
+ rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE);
+ else if (pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW)
+ rom_size = 0x20000;
+
+ if (rom_size && pdev->rom_attr) {
+ sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr);
+ kfree(pdev->rom_attr);
}
}
projects / linux-2.6-omap-h63xx.git / blobdiff