[ACPI] Merge acpi-2.6.12 branch into 2.6.13-rc3

[firefly-linux-kernel-4.4.55.git] / arch / i386 / kernel / acpi / boot.c

diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c
index 9f63ae0f404b2586f4c24182b408b9fc1f944dba..55c0fbd689569a506b30eb61eb1cf341f7fb687d 100644 (file)
--- a/arch/i386/kernel/acpi/boot.c
+++ b/arch/i386/kernel/acpi/boot.c
@@ -159,9 +159,15 @@ char *__acpi_map_table(unsigned long phys, unsigned long size)
 #endif
 
 #ifdef CONFIG_PCI_MMCONFIG
-static int __init acpi_parse_mcfg(unsigned long phys_addr, unsigned long size)
+/* The physical address of the MMCONFIG aperture.  Set from ACPI tables. */
+struct acpi_table_mcfg_config *pci_mmcfg_config;
+int pci_mmcfg_config_num;
+
+int __init acpi_parse_mcfg(unsigned long phys_addr, unsigned long size)
 {
        struct acpi_table_mcfg *mcfg;
+       unsigned long i;
+       int config_size;
 
        if (!phys_addr || !size)
                return -EINVAL;
@@ -172,18 +178,38 @@ static int __init acpi_parse_mcfg(unsigned long phys_addr, unsigned long size)
                return -ENODEV;
        }
 
-       if (mcfg->base_reserved) {
-               printk(KERN_ERR PREFIX "MMCONFIG not in low 4GB of memory\n");
+       /* how many config structures do we have */
+       pci_mmcfg_config_num = 0;
+       i = size - sizeof(struct acpi_table_mcfg);
+       while (i >= sizeof(struct acpi_table_mcfg_config)) {
+               ++pci_mmcfg_config_num;
+               i -= sizeof(struct acpi_table_mcfg_config);
+       };
+       if (pci_mmcfg_config_num == 0) {
+               printk(KERN_ERR PREFIX "MMCONFIG has no entries\n");
                return -ENODEV;
        }
 
-       pci_mmcfg_base_addr = mcfg->base_address;
+       config_size = pci_mmcfg_config_num * sizeof(*pci_mmcfg_config);
+       pci_mmcfg_config = kmalloc(config_size, GFP_KERNEL);
+       if (!pci_mmcfg_config) {
+               printk(KERN_WARNING PREFIX
+                      "No memory for MCFG config tables\n");
+               return -ENOMEM;
+       }
+
+       memcpy(pci_mmcfg_config, &mcfg->config, config_size);
+       for (i = 0; i < pci_mmcfg_config_num; ++i) {
+               if (mcfg->config[i].base_reserved) {
+                       printk(KERN_ERR PREFIX
+                              "MMCONFIG not in low 4GB of memory\n");
+                       return -ENODEV;
+               }
+       }
 
        return 0;
 }
-#else
-#define        acpi_parse_mcfg NULL
-#endif /* !CONFIG_PCI_MMCONFIG */
+#endif /* CONFIG_PCI_MMCONFIG */
 
 #ifdef CONFIG_X86_LOCAL_APIC
 static int __init
@@ -458,7 +484,11 @@ int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
        return 0;
 }
 
-unsigned int acpi_register_gsi(u32 gsi, int edge_level, int active_high_low)
+/*
+ * success: return IRQ number (>=0)
+ * failure: return < 0
+ */
+int acpi_register_gsi(u32 gsi, int edge_level, int active_high_low)
 {
        unsigned int irq;
        unsigned int plat_gsi = gsi;
@@ -507,6 +537,22 @@ acpi_unmap_lsapic(int cpu)
 EXPORT_SYMBOL(acpi_unmap_lsapic);
 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
 
+int
+acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
+{
+       /* TBD */
+       return -EINVAL;
+}
+EXPORT_SYMBOL(acpi_register_ioapic);
+
+int
+acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
+{
+       /* TBD */
+       return -EINVAL;
+}
+EXPORT_SYMBOL(acpi_unregister_ioapic);
+
 static unsigned long __init
 acpi_scan_rsdp (
        unsigned long           start,
@@ -1123,7 +1169,6 @@ int __init acpi_boot_init(void)
        acpi_process_madt();
 
        acpi_table_parse(ACPI_HPET, acpi_parse_hpet);
-       acpi_table_parse(ACPI_MCFG, acpi_parse_mcfg);
 
        return 0;
 }