}
}
-static void acpi_pci_root_remap_iospace(struct resource_entry *entry)
+static void acpi_pci_root_remap_iospace(struct fwnode_handle *fwnode,
+ struct resource_entry *entry)
{
#ifdef PCI_IOBASE
struct resource *res = entry->res;
resource_size_t length = resource_size(res);
unsigned long port;
- if (pci_register_io_range(cpu_addr, length))
+ if (pci_register_io_range(fwnode, cpu_addr, length))
goto err;
port = pci_address_to_pio(cpu_addr);
else {
resource_list_for_each_entry_safe(entry, tmp, list) {
if (entry->res->flags & IORESOURCE_IO)
- acpi_pci_root_remap_iospace(entry);
+ acpi_pci_root_remap_iospace(&device->fwnode,
+ entry);
if (entry->res->flags & IORESOURCE_DISABLED)
resource_list_destroy_entry(entry);
}
EXPORT_SYMBOL(pci_request_regions_exclusive);
-#ifdef PCI_IOBASE
-struct io_range {
- struct list_head list;
- phys_addr_t start;
- resource_size_t size;
-};
-
-static LIST_HEAD(io_range_list);
-static DEFINE_SPINLOCK(io_range_lock);
-#endif
-
/*
* Record the PCI IO range (expressed as CPU physical address + size).
* Return a negative value if an error has occured, zero otherwise
*/
-int __weak pci_register_io_range(phys_addr_t addr, resource_size_t size)
+int pci_register_io_range(struct fwnode_handle *fwnode, phys_addr_t addr,
+ resource_size_t size)
{
int err = 0;
#ifdef PCI_IOBASE
- struct io_range *range;
- resource_size_t allocated_size = 0;
-
- /* check if the range hasn't been previously recorded */
- spin_lock(&io_range_lock);
- list_for_each_entry(range, &io_range_list, list) {
- if (addr >= range->start && addr + size <= range->start + size) {
- /* range already registered, bail out */
- goto end_register;
- }
- allocated_size += range->size;
- }
-
- /* range not registed yet, check for available space */
- if (allocated_size + size - 1 > IO_SPACE_LIMIT) {
- /* if it's too big check if 64K space can be reserved */
- if (allocated_size + SZ_64K - 1 > IO_SPACE_LIMIT) {
- err = -E2BIG;
- goto end_register;
- }
+ struct libio_range *range, *tmprange;
- size = SZ_64K;
- pr_warn("Requested IO range too big, new size set to 64K\n");
- }
+ if (!size || addr + size < addr)
+ return -EINVAL;
- /* add the range to the list */
- range = kzalloc(sizeof(*range), GFP_ATOMIC);
- if (!range) {
- err = -ENOMEM;
- goto end_register;
- }
+ WARN_ON(!PAGE_ALIGNED(addr) || !PAGE_ALIGNED(size));
- range->start = addr;
+ range = kzalloc(sizeof(*range), GFP_KERNEL);
+ if (!range)
+ return -ENOMEM;
+ range->node = fwnode;
+ range->flags = IO_CPU_MMIO;
range->size = size;
+ range->hw_start = addr;
- list_add_tail(&range->list, &io_range_list);
-
-end_register:
- spin_unlock(&io_range_lock);
+ tmprange = register_libio_range(range);
+ if (tmprange != range) {
+ kfree(range);
+ if (IS_ERR(tmprange))
+ return -EFAULT;
+ }
#endif
return err;
phys_addr_t address = (phys_addr_t)OF_BAD_ADDR;
#ifdef PCI_IOBASE
- struct io_range *range;
- resource_size_t allocated_size = 0;
-
if (pio > IO_SPACE_LIMIT)
return address;
- spin_lock(&io_range_lock);
- list_for_each_entry(range, &io_range_list, list) {
- if (pio >= allocated_size && pio < allocated_size + range->size) {
- address = range->start + pio - allocated_size;
- break;
- }
- allocated_size += range->size;
- }
- spin_unlock(&io_range_lock);
+ address = libio_to_hwaddr(pio);
#endif
return address;
unsigned long __weak pci_address_to_pio(phys_addr_t address)
{
#ifdef PCI_IOBASE
- struct io_range *res;
- resource_size_t offset = 0;
- unsigned long addr = -1;
-
- spin_lock(&io_range_lock);
- list_for_each_entry(res, &io_range_list, list) {
- if (address >= res->start && address < res->start + res->size) {
- addr = address - res->start + offset;
- break;
- }
- offset += res->size;
- }
- spin_unlock(&io_range_lock);
-
- return addr;
+ return libio_translate_cpuaddr(address);
#else
- if (address > IO_SPACE_LIMIT)
- return (unsigned long)-1;
-
return (unsigned long) address;
#endif
}
*find_io_range_from_fwnode(struct fwnode_handle *fwnode);
extern unsigned long libio_translate_hwaddr(struct fwnode_handle *fwnode,
resource_size_t hw_addr);
+extern struct libio_range *register_libio_range(struct libio_range *newrange);
+extern resource_size_t libio_to_hwaddr(unsigned long pio);
+
+extern unsigned long libio_translate_cpuaddr(resource_size_t hw_addr);
#else
static inline struct libio_range
*find_io_range_from_fwnode(struct fwnode_handle *fwnode)
{
return -1;
}
-#endif
-extern struct libio_range *register_libio_range(struct libio_range *newrange);
-extern resource_size_t libio_to_hwaddr(unsigned long pio);
+static inline struct libio_range
+*register_libio_range(struct libio_range *newrange)
+{
+ return NULL;
+}
-extern unsigned long libio_translate_cpuaddr(resource_size_t hw_addr);
+static inline resource_size_t libio_to_hwaddr(unsigned long pio)
+{
+ return -1;
+}
+
+static inline unsigned long libio_translate_cpuaddr(resource_size_t hw_addr)
+{
+ return -1;
+}
+#endif
#ifdef CONFIG_ACPI
extern int acpi_set_libio_resource(struct device *child,