1 files changed, 68 insertions, 29 deletions

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 57ae1e5cde0a..0f6f3bcbc8eb 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -36,6 +36,7 @@
 #include <linux/delay.h>
 #include <linux/workqueue.h>
 #include <linux/nmi.h>
+#include <linux/acpi.h>
 #include <acpi/acpi.h>
 #include <asm/io.h>
 #include <acpi/acpi_bus.h>
@@ -75,6 +76,54 @@ static acpi_osd_handler acpi_irq_handler;
 static void *acpi_irq_context;
 static struct workqueue_struct *kacpid_wq;
 
+static void __init acpi_request_region (struct acpi_generic_address *addr,
+        unsigned int length, char *desc)
+{
+        struct resource *res;
+
+        if (!addr->address || !length)
+                return;
+
+        if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_IO)
+                res = request_region(addr->address, length, desc);
+        else if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
+                res = request_mem_region(addr->address, length, desc);
+}
+
+static int __init acpi_reserve_resources(void)
+{
+        acpi_request_region(&acpi_gbl_FADT.xpm1a_event_block, acpi_gbl_FADT.pm1_event_length,
+                "ACPI PM1a_EVT_BLK");
+
+        acpi_request_region(&acpi_gbl_FADT.xpm1b_event_block, acpi_gbl_FADT.pm1_event_length,
+                "ACPI PM1b_EVT_BLK");
+
+        acpi_request_region(&acpi_gbl_FADT.xpm1a_control_block, acpi_gbl_FADT.pm1_control_length,
+                "ACPI PM1a_CNT_BLK");
+
+        acpi_request_region(&acpi_gbl_FADT.xpm1b_control_block, acpi_gbl_FADT.pm1_control_length,
+                "ACPI PM1b_CNT_BLK");
+
+        if (acpi_gbl_FADT.pm_timer_length == 4)
+                acpi_request_region(&acpi_gbl_FADT.xpm_timer_block, 4, "ACPI PM_TMR");
+
+        acpi_request_region(&acpi_gbl_FADT.xpm2_control_block, acpi_gbl_FADT.pm2_control_length,
+                "ACPI PM2_CNT_BLK");
+
+        /* Length of GPE blocks must be a non-negative multiple of 2 */
+
+        if (!(acpi_gbl_FADT.gpe0_block_length & 0x1))
+                acpi_request_region(&acpi_gbl_FADT.xgpe0_block,
+                               acpi_gbl_FADT.gpe0_block_length, "ACPI GPE0_BLK");
+
+        if (!(acpi_gbl_FADT.gpe1_block_length & 0x1))
+                acpi_request_region(&acpi_gbl_FADT.xgpe1_block,
+                               acpi_gbl_FADT.gpe1_block_length, "ACPI GPE1_BLK");
+
+        return 0;
+}
+device_initcall(acpi_reserve_resources);
+
 acpi_status acpi_os_initialize(void)
 {
         return AE_OK;
@@ -136,53 +185,43 @@ void acpi_os_vprintf(const char *fmt, va_list args)
 #endif
 }
 
-acpi_status acpi_os_get_root_pointer(u32 flags, struct acpi_pointer *addr)
+acpi_physical_address __init acpi_os_get_root_pointer(void)
 {
         if (efi_enabled) {
-                addr->pointer_type = ACPI_PHYSICAL_POINTER;
                 if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
-                        addr->pointer.physical = efi.acpi20;
+                        return efi.acpi20;
                 else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
-                        addr->pointer.physical = efi.acpi;
+                        return efi.acpi;
                 else {
                         printk(KERN_ERR PREFIX
                                "System description tables not found\n");
-                        return AE_NOT_FOUND;
+                        return 0;
                 }
-        } else {
-                if (ACPI_FAILURE(acpi_find_root_pointer(flags, addr))) {
-                        printk(KERN_ERR PREFIX
-                               "System description tables not found\n");
-                        return AE_NOT_FOUND;
-                }
-        }
-
-        return AE_OK;
+        } else
+                return acpi_find_rsdp();
 }
 
-acpi_status
-acpi_os_map_memory(acpi_physical_address phys, acpi_size size,
-                   void __iomem ** virt)
+void __iomem *acpi_os_map_memory(acpi_physical_address phys, acpi_size size)
 {
         if (phys > ULONG_MAX) {
                 printk(KERN_ERR PREFIX "Cannot map memory that high\n");
-                return AE_BAD_PARAMETER;
+                return 0;
         }
-        /*
-         * ioremap checks to ensure this is in reserved space
-         */
-        *virt = ioremap((unsigned long)phys, size);
-
-        if (!*virt)
-                return AE_NO_MEMORY;
-
-        return AE_OK;
+        if (acpi_gbl_permanent_mmap)
+                /*
+                * ioremap checks to ensure this is in reserved space
+                */
+                return ioremap((unsigned long)phys, size);
+        else
+                return __acpi_map_table((unsigned long)phys, size);
 }
 EXPORT_SYMBOL_GPL(acpi_os_map_memory);
 
 void acpi_os_unmap_memory(void __iomem * virt, acpi_size size)
 {
-        iounmap(virt);
+        if (acpi_gbl_permanent_mmap) {
+                iounmap(virt);
+        }
 }
 EXPORT_SYMBOL_GPL(acpi_os_unmap_memory);
 
@@ -254,7 +293,7 @@ acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler,
          * FADT. It may not be the same if an interrupt source override exists
          * for the SCI.
          */
-        gsi = acpi_fadt.sci_int;
+        gsi = acpi_gbl_FADT.sci_interrupt;
         if (acpi_gsi_to_irq(gsi, &irq) < 0) {
                 printk(KERN_ERR PREFIX "SCI (ACPI GSI %d) not registered\n",
                        gsi);