#include <linux/stat.h>
#include <linux/topology.h>
#include <linux/mm.h>
-
+#include <linux/capability.h>
+#include <linux/pci-aspm.h>
#include "pci.h"
static int sysfs_initialized; /* = 0 */
mask = pcibus_to_cpumask(to_pci_dev(dev)->bus);
len = cpumask_scnprintf(buf, PAGE_SIZE-2, mask);
- strcat(buf,"\n");
- return 1+len;
+ buf[len++] = '\n';
+ buf[len] = '\0';
+ return len;
+}
+
+
+static ssize_t local_cpulist_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ cpumask_t mask;
+ int len;
+
+ mask = pcibus_to_cpumask(to_pci_dev(dev)->bus);
+ len = cpulist_scnprintf(buf, PAGE_SIZE-2, mask);
+ buf[len++] = '\n';
+ buf[len] = '\0';
+ return len;
}
/* show resources */
__ATTR_RO(class),
__ATTR_RO(irq),
__ATTR_RO(local_cpus),
+ __ATTR_RO(local_cpulist),
__ATTR_RO(modalias),
#ifdef CONFIG_NUMA
__ATTR_RO(numa_node),
};
static ssize_t
-pci_read_config(struct kobject *kobj, char *buf, loff_t off, size_t count)
+pci_read_config(struct kobject *kobj, struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
{
struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj));
unsigned int size = 64;
}
static ssize_t
-pci_write_config(struct kobject *kobj, char *buf, loff_t off, size_t count)
+pci_write_config(struct kobject *kobj, struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
{
struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj));
unsigned int size = count;
return count;
}
+static ssize_t
+pci_read_vpd(struct kobject *kobj, struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct pci_dev *dev =
+ to_pci_dev(container_of(kobj, struct device, kobj));
+ int end;
+ int ret;
+
+ if (off > bin_attr->size)
+ count = 0;
+ else if (count > bin_attr->size - off)
+ count = bin_attr->size - off;
+ end = off + count;
+
+ while (off < end) {
+ ret = dev->vpd->ops->read(dev, off, end - off, buf);
+ if (ret < 0)
+ return ret;
+ buf += ret;
+ off += ret;
+ }
+
+ return count;
+}
+
+static ssize_t
+pci_write_vpd(struct kobject *kobj, struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct pci_dev *dev =
+ to_pci_dev(container_of(kobj, struct device, kobj));
+ int end;
+ int ret;
+
+ if (off > bin_attr->size)
+ count = 0;
+ else if (count > bin_attr->size - off)
+ count = bin_attr->size - off;
+ end = off + count;
+
+ while (off < end) {
+ ret = dev->vpd->ops->write(dev, off, end - off, buf);
+ if (ret < 0)
+ return ret;
+ buf += ret;
+ off += ret;
+ }
+
+ return count;
+}
+
#ifdef HAVE_PCI_LEGACY
/**
* pci_read_legacy_io - read byte(s) from legacy I/O port space
* callback routine (pci_legacy_read).
*/
ssize_t
-pci_read_legacy_io(struct kobject *kobj, char *buf, loff_t off, size_t count)
+pci_read_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
{
struct pci_bus *bus = to_pci_bus(container_of(kobj,
- struct class_device,
+ struct device,
kobj));
/* Only support 1, 2 or 4 byte accesses */
* callback routine (pci_legacy_write).
*/
ssize_t
-pci_write_legacy_io(struct kobject *kobj, char *buf, loff_t off, size_t count)
+pci_write_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
{
struct pci_bus *bus = to_pci_bus(container_of(kobj,
- struct class_device,
+ struct device,
kobj));
/* Only support 1, 2 or 4 byte accesses */
if (count != 1 && count != 2 && count != 4)
struct vm_area_struct *vma)
{
struct pci_bus *bus = to_pci_bus(container_of(kobj,
- struct class_device,
+ struct device,
kobj));
return pci_mmap_legacy_page_range(bus, vma);
* @kobj: kobject for mapping
* @attr: struct bin_attribute for the file being mapped
* @vma: struct vm_area_struct passed into the mmap
+ * @write_combine: 1 for write_combine mapping
*
* Use the regular PCI mapping routines to map a PCI resource into userspace.
- * FIXME: write combining? maybe automatic for prefetchable regions?
*/
static int
pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
- struct vm_area_struct *vma)
+ struct vm_area_struct *vma, int write_combine)
{
struct pci_dev *pdev = to_pci_dev(container_of(kobj,
struct device, kobj));
vma->vm_pgoff += start >> PAGE_SHIFT;
mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io;
- return pci_mmap_page_range(pdev, vma, mmap_type, 0);
+ return pci_mmap_page_range(pdev, vma, mmap_type, write_combine);
+}
+
+static int
+pci_mmap_resource_uc(struct kobject *kobj, struct bin_attribute *attr,
+ struct vm_area_struct *vma)
+{
+ return pci_mmap_resource(kobj, attr, vma, 0);
+}
+
+static int
+pci_mmap_resource_wc(struct kobject *kobj, struct bin_attribute *attr,
+ struct vm_area_struct *vma)
+{
+ return pci_mmap_resource(kobj, attr, vma, 1);
}
/**
sysfs_remove_bin_file(&pdev->dev.kobj, res_attr);
kfree(res_attr);
}
+
+ res_attr = pdev->res_attr_wc[i];
+ if (res_attr) {
+ sysfs_remove_bin_file(&pdev->dev.kobj, res_attr);
+ kfree(res_attr);
+ }
}
}
+static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine)
+{
+ /* allocate attribute structure, piggyback attribute name */
+ int name_len = write_combine ? 13 : 10;
+ struct bin_attribute *res_attr;
+ int retval;
+
+ res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC);
+ if (res_attr) {
+ char *res_attr_name = (char *)(res_attr + 1);
+
+ if (write_combine) {
+ pdev->res_attr_wc[num] = res_attr;
+ sprintf(res_attr_name, "resource%d_wc", num);
+ res_attr->mmap = pci_mmap_resource_wc;
+ } else {
+ pdev->res_attr[num] = res_attr;
+ sprintf(res_attr_name, "resource%d", num);
+ res_attr->mmap = pci_mmap_resource_uc;
+ }
+ res_attr->attr.name = res_attr_name;
+ res_attr->attr.mode = S_IRUSR | S_IWUSR;
+ res_attr->size = pci_resource_len(pdev, num);
+ res_attr->private = &pdev->resource[num];
+ retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr);
+ } else
+ retval = -ENOMEM;
+
+ return retval;
+}
+
/**
* pci_create_resource_files - create resource files in sysfs for @dev
* @dev: dev in question
/* Expose the PCI resources from this device as files */
for (i = 0; i < PCI_ROM_RESOURCE; i++) {
- struct bin_attribute *res_attr;
/* skip empty resources */
if (!pci_resource_len(pdev, i))
continue;
- /* allocate attribute structure, piggyback attribute name */
- res_attr = kzalloc(sizeof(*res_attr) + 10, GFP_ATOMIC);
- if (res_attr) {
- char *res_attr_name = (char *)(res_attr + 1);
-
- pdev->res_attr[i] = res_attr;
- sprintf(res_attr_name, "resource%d", i);
- res_attr->attr.name = res_attr_name;
- res_attr->attr.mode = S_IRUSR | S_IWUSR;
- res_attr->size = pci_resource_len(pdev, i);
- res_attr->mmap = pci_mmap_resource;
- res_attr->private = &pdev->resource[i];
- retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr);
- if (retval) {
- pci_remove_resource_files(pdev);
- return retval;
- }
- } else {
- return -ENOMEM;
+ retval = pci_create_attr(pdev, i, 0);
+ /* for prefetchable resources, create a WC mappable file */
+ if (!retval && pdev->resource[i].flags & IORESOURCE_PREFETCH)
+ retval = pci_create_attr(pdev, i, 1);
+
+ if (retval) {
+ pci_remove_resource_files(pdev);
+ return retval;
}
}
return 0;
* writing anything except 0 enables it
*/
static ssize_t
-pci_write_rom(struct kobject *kobj, char *buf, loff_t off, size_t count)
+pci_write_rom(struct kobject *kobj, struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
{
struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj));
* device corresponding to @kobj.
*/
static ssize_t
-pci_read_rom(struct kobject *kobj, char *buf, loff_t off, size_t count)
+pci_read_rom(struct kobject *kobj, struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
{
struct pci_dev *pdev = to_pci_dev(container_of(kobj, struct device, kobj));
void __iomem *rom;
.write = pci_write_config,
};
+int __attribute__ ((weak)) pcibios_add_platform_entries(struct pci_dev *dev)
+{
+ return 0;
+}
+
int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
{
- struct bin_attribute *rom_attr = NULL;
+ struct bin_attribute *attr = NULL;
int retval;
if (!sysfs_initialized)
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->ops->get_size(pdev);
+ 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_bin_file;
+ goto err_vpd_file;
/* 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)) {
- rom_attr = kzalloc(sizeof(*rom_attr), GFP_ATOMIC);
- if (rom_attr) {
- pdev->rom_attr = rom_attr;
- rom_attr->size = pci_resource_len(pdev, PCI_ROM_RESOURCE);
- rom_attr->attr.name = "rom";
- rom_attr->attr.mode = S_IRUSR;
- rom_attr->read = pci_read_rom;
- rom_attr->write = pci_write_rom;
- retval = sysfs_create_bin_file(&pdev->dev.kobj, rom_attr);
+ 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 {
}
}
/* add platform-specific attributes */
- pcibios_add_platform_entries(pdev);
+ if (pcibios_add_platform_entries(pdev))
+ goto err_rom_file;
+
+ pcie_aspm_create_sysfs_dev_files(pdev);
return 0;
+err_rom_file:
+ if (pci_resource_len(pdev, PCI_ROM_RESOURCE))
+ sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr);
err_rom:
- kfree(rom_attr);
+ kfree(pdev->rom_attr);
err_resource_files:
pci_remove_resource_files(pdev);
-err_bin_file:
+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)
sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
else
if (!sysfs_initialized)
return;
+ pcie_aspm_remove_sysfs_dev_files(pdev);
+
+ if (pdev->vpd) {
+ sysfs_remove_bin_file(&pdev->dev.kobj, pdev->vpd->attr);
+ kfree(pdev->vpd->attr);
+ }
if (pdev->cfg_size < 4096)
sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
else
sysfs_initialized = 1;
for_each_pci_dev(pdev) {
retval = pci_create_sysfs_dev_files(pdev);
- if (retval)
+ if (retval) {
+ pci_dev_put(pdev);
return retval;
+ }
}
return 0;
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