{
memblock_mark_nomap(addr, size);
}
-
-#ifdef CONFIG_ACPI_FFH
-/*
- * Implements ARM64 specific callbacks to support ACPI FFH Operation Region as
- * specified in https://developer.arm.com/docs/den0048/latest
- */
-struct acpi_ffh_data {
- struct acpi_ffh_info info;
- void (*invoke_ffh_fn)(unsigned long a0, unsigned long a1,
- unsigned long a2, unsigned long a3,
- unsigned long a4, unsigned long a5,
- unsigned long a6, unsigned long a7,
- struct arm_smccc_res *args,
- struct arm_smccc_quirk *res);
- void (*invoke_ffh64_fn)(const struct arm_smccc_1_2_regs *args,
- struct arm_smccc_1_2_regs *res);
-};
-
-int acpi_ffh_address_space_arch_setup(void *handler_ctxt, void **region_ctxt)
-{
- enum arm_smccc_conduit conduit;
- struct acpi_ffh_data *ffh_ctxt;
-
- if (arm_smccc_get_version() < ARM_SMCCC_VERSION_1_2)
- return -EOPNOTSUPP;
-
- conduit = arm_smccc_1_1_get_conduit();
- if (conduit == SMCCC_CONDUIT_NONE) {
- pr_err("%s: invalid SMCCC conduit\n", __func__);
- return -EOPNOTSUPP;
- }
-
- ffh_ctxt = kzalloc(sizeof(*ffh_ctxt), GFP_KERNEL);
- if (!ffh_ctxt)
- return -ENOMEM;
-
- if (conduit == SMCCC_CONDUIT_SMC) {
- ffh_ctxt->invoke_ffh_fn = __arm_smccc_smc;
- ffh_ctxt->invoke_ffh64_fn = arm_smccc_1_2_smc;
- } else {
- ffh_ctxt->invoke_ffh_fn = __arm_smccc_hvc;
- ffh_ctxt->invoke_ffh64_fn = arm_smccc_1_2_hvc;
- }
-
- memcpy(ffh_ctxt, handler_ctxt, sizeof(ffh_ctxt->info));
-
- *region_ctxt = ffh_ctxt;
- return AE_OK;
-}
-
-static bool acpi_ffh_smccc_owner_allowed(u32 fid)
-{
- int owner = ARM_SMCCC_OWNER_NUM(fid);
-
- if (owner == ARM_SMCCC_OWNER_STANDARD ||
- owner == ARM_SMCCC_OWNER_SIP || owner == ARM_SMCCC_OWNER_OEM)
- return true;
-
- return false;
-}
-
-int acpi_ffh_address_space_arch_handler(acpi_integer *value, void *region_context)
-{
- int ret = 0;
- struct acpi_ffh_data *ffh_ctxt = region_context;
-
- if (ffh_ctxt->info.offset == 0) {
- /* SMC/HVC 32bit call */
- struct arm_smccc_res res;
- u32 a[8] = { 0 }, *ptr = (u32 *)value;
-
- if (!ARM_SMCCC_IS_FAST_CALL(*ptr) || ARM_SMCCC_IS_64(*ptr) ||
- !acpi_ffh_smccc_owner_allowed(*ptr) ||
- ffh_ctxt->info.length > 32) {
- ret = AE_ERROR;
- } else {
- int idx, len = ffh_ctxt->info.length >> 2;
-
- for (idx = 0; idx < len; idx++)
- a[idx] = *(ptr + idx);
-
- ffh_ctxt->invoke_ffh_fn(a[0], a[1], a[2], a[3], a[4],
- a[5], a[6], a[7], &res, NULL);
- memcpy(value, &res, sizeof(res));
- }
-
- } else if (ffh_ctxt->info.offset == 1) {
- /* SMC/HVC 64bit call */
- struct arm_smccc_1_2_regs *r = (struct arm_smccc_1_2_regs *)value;
-
- if (!ARM_SMCCC_IS_FAST_CALL(r->a0) || !ARM_SMCCC_IS_64(r->a0) ||
- !acpi_ffh_smccc_owner_allowed(r->a0) ||
- ffh_ctxt->info.length > sizeof(*r)) {
- ret = AE_ERROR;
- } else {
- ffh_ctxt->invoke_ffh64_fn(r, r);
- memcpy(value, r, ffh_ctxt->info.length);
- }
- } else {
- ret = AE_ERROR;
- }
-
- return ret;
-}
-#endif /* CONFIG_ACPI_FFH */
+
+ #ifdef CONFIG_ACPI_HOTPLUG_CPU
+ int acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, u32 apci_id,
+ int *pcpu)
+ {
+ /* If an error code is passed in this stub can't fix it */
+ if (*pcpu < 0) {
+ pr_warn_once("Unable to map CPU to valid ID\n");
+ return *pcpu;
+ }
+
+ return 0;
+ }
+ EXPORT_SYMBOL(acpi_map_cpu);
+
+ int acpi_unmap_cpu(int cpu)
+ {
+ return 0;
+ }
+ EXPORT_SYMBOL(acpi_unmap_cpu);
+ #endif /* CONFIG_ACPI_HOTPLUG_CPU */