ACPI: processor: mv processor_pdc.c processor_core.c
authorAlex Chiang <achiang@hp.com>
Mon, 22 Feb 2010 19:11:14 +0000 (12:11 -0700)
committerLen Brown <len.brown@intel.com>
Mon, 15 Mar 2010 01:17:17 +0000 (21:17 -0400)
We've renamed the old processor_core.c to processor_driver.c, to
convey the idea that it can be built modular and has driver-like
bits.

Now let's re-create a processor_core.c for the bits needed
statically by the rest of the kernel. The contents of processor_pdc.c
are a good starting spot, so let's just rename that file and
complete our three card monte.

Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
drivers/acpi/Makefile
drivers/acpi/processor_core.c [new file with mode: 0644]
drivers/acpi/processor_pdc.c [deleted file]
include/acpi/processor.h

index 6b363a50d18b0ad4ab73ff99978eb170fac56d7c..a8d8998dd5c5bbdf9faa25c289a627de38d9198a 100644 (file)
@@ -32,7 +32,7 @@ acpi-$(CONFIG_ACPI_SLEEP)     += proc.o
 #
 acpi-y                         += bus.o glue.o
 acpi-y                         += scan.o
-acpi-y                         += processor_pdc.o
+acpi-y                         += processor_core.o
 acpi-y                         += ec.o
 acpi-$(CONFIG_ACPI_DOCK)       += dock.o
 acpi-y                         += pci_root.o pci_link.o pci_irq.o pci_bind.o
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
new file mode 100644 (file)
index 0000000..6f376bf
--- /dev/null
@@ -0,0 +1,209 @@
+/*
+ * Copyright (C) 2005 Intel Corporation
+ * Copyright (C) 2009 Hewlett-Packard Development Company, L.P.
+ *
+ *     Alex Chiang <achiang@hp.com>
+ *     - Unified x86/ia64 implementations
+ *     Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
+ *     - Added _PDC for platforms with Intel CPUs
+ */
+#include <linux/dmi.h>
+
+#include <acpi/acpi_drivers.h>
+#include <acpi/processor.h>
+
+#include "internal.h"
+
+#define PREFIX                 "ACPI: "
+#define _COMPONENT             ACPI_PROCESSOR_COMPONENT
+ACPI_MODULE_NAME("processor_core");
+
+static int set_no_mwait(const struct dmi_system_id *id)
+{
+       printk(KERN_NOTICE PREFIX "%s detected - "
+               "disabling mwait for CPU C-states\n", id->ident);
+       idle_nomwait = 1;
+       return 0;
+}
+
+static struct dmi_system_id __cpuinitdata processor_idle_dmi_table[] = {
+       {
+       set_no_mwait, "IFL91 board", {
+       DMI_MATCH(DMI_BIOS_VENDOR, "COMPAL"),
+       DMI_MATCH(DMI_SYS_VENDOR, "ZEPTO"),
+       DMI_MATCH(DMI_PRODUCT_VERSION, "3215W"),
+       DMI_MATCH(DMI_BOARD_NAME, "IFL91") }, NULL},
+       {
+       set_no_mwait, "Extensa 5220", {
+       DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
+       DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+       DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
+       DMI_MATCH(DMI_BOARD_NAME, "Columbia") }, NULL},
+       {},
+};
+
+static void acpi_set_pdc_bits(u32 *buf)
+{
+       buf[0] = ACPI_PDC_REVISION_ID;
+       buf[1] = 1;
+
+       /* Enable coordination with firmware's _TSD info */
+       buf[2] = ACPI_PDC_SMP_T_SWCOORD;
+
+       /* Twiddle arch-specific bits needed for _PDC */
+       arch_acpi_set_pdc_bits(buf);
+}
+
+static struct acpi_object_list *acpi_processor_alloc_pdc(void)
+{
+       struct acpi_object_list *obj_list;
+       union acpi_object *obj;
+       u32 *buf;
+
+       /* allocate and initialize pdc. It will be used later. */
+       obj_list = kmalloc(sizeof(struct acpi_object_list), GFP_KERNEL);
+       if (!obj_list) {
+               printk(KERN_ERR "Memory allocation error\n");
+               return NULL;
+       }
+
+       obj = kmalloc(sizeof(union acpi_object), GFP_KERNEL);
+       if (!obj) {
+               printk(KERN_ERR "Memory allocation error\n");
+               kfree(obj_list);
+               return NULL;
+       }
+
+       buf = kmalloc(12, GFP_KERNEL);
+       if (!buf) {
+               printk(KERN_ERR "Memory allocation error\n");
+               kfree(obj);
+               kfree(obj_list);
+               return NULL;
+       }
+
+       acpi_set_pdc_bits(buf);
+
+       obj->type = ACPI_TYPE_BUFFER;
+       obj->buffer.length = 12;
+       obj->buffer.pointer = (u8 *) buf;
+       obj_list->count = 1;
+       obj_list->pointer = obj;
+
+       return obj_list;
+}
+
+/*
+ * _PDC is required for a BIOS-OS handshake for most of the newer
+ * ACPI processor features.
+ */
+static int
+acpi_processor_eval_pdc(acpi_handle handle, struct acpi_object_list *pdc_in)
+{
+       acpi_status status = AE_OK;
+
+       if (idle_nomwait) {
+               /*
+                * If mwait is disabled for CPU C-states, the C2C3_FFH access
+                * mode will be disabled in the parameter of _PDC object.
+                * Of course C1_FFH access mode will also be disabled.
+                */
+               union acpi_object *obj;
+               u32 *buffer = NULL;
+
+               obj = pdc_in->pointer;
+               buffer = (u32 *)(obj->buffer.pointer);
+               buffer[2] &= ~(ACPI_PDC_C_C2C3_FFH | ACPI_PDC_C_C1_FFH);
+
+       }
+       status = acpi_evaluate_object(handle, "_PDC", pdc_in, NULL);
+
+       if (ACPI_FAILURE(status))
+               ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                   "Could not evaluate _PDC, using legacy perf. control.\n"));
+
+       return status;
+}
+
+static int early_pdc_done;
+
+void acpi_processor_set_pdc(acpi_handle handle)
+{
+       struct acpi_object_list *obj_list;
+
+       if (arch_has_acpi_pdc() == false)
+               return;
+
+       if (early_pdc_done)
+               return;
+
+       obj_list = acpi_processor_alloc_pdc();
+       if (!obj_list)
+               return;
+
+       acpi_processor_eval_pdc(handle, obj_list);
+
+       kfree(obj_list->pointer->buffer.pointer);
+       kfree(obj_list->pointer);
+       kfree(obj_list);
+}
+EXPORT_SYMBOL_GPL(acpi_processor_set_pdc);
+
+static int early_pdc_optin;
+static int set_early_pdc_optin(const struct dmi_system_id *id)
+{
+       early_pdc_optin = 1;
+       return 0;
+}
+
+static int param_early_pdc_optin(char *s)
+{
+       early_pdc_optin = 1;
+       return 1;
+}
+__setup("acpi_early_pdc_eval", param_early_pdc_optin);
+
+static struct dmi_system_id __cpuinitdata early_pdc_optin_table[] = {
+       {
+       set_early_pdc_optin, "HP Envy", {
+       DMI_MATCH(DMI_BIOS_VENDOR, "Hewlett-Packard"),
+       DMI_MATCH(DMI_PRODUCT_NAME, "HP Envy") }, NULL},
+       {
+       set_early_pdc_optin, "HP Pavilion dv6", {
+       DMI_MATCH(DMI_BIOS_VENDOR, "Hewlett-Packard"),
+       DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv6") }, NULL},
+       {
+       set_early_pdc_optin, "HP Pavilion dv7", {
+       DMI_MATCH(DMI_BIOS_VENDOR, "Hewlett-Packard"),
+       DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv7") }, NULL},
+       {},
+};
+
+static acpi_status
+early_init_pdc(acpi_handle handle, u32 lvl, void *context, void **rv)
+{
+       acpi_processor_set_pdc(handle);
+       return AE_OK;
+}
+
+void __init acpi_early_processor_set_pdc(void)
+{
+       /*
+        * Check whether the system is DMI table. If yes, OSPM
+        * should not use mwait for CPU-states.
+        */
+       dmi_check_system(processor_idle_dmi_table);
+
+       /*
+        * Allow systems to opt-in to early _PDC evaluation.
+        */
+       dmi_check_system(early_pdc_optin_table);
+       if (!early_pdc_optin)
+               return;
+
+       acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT,
+                           ACPI_UINT32_MAX,
+                           early_init_pdc, NULL, NULL, NULL);
+
+       early_pdc_done = 1;
+}
diff --git a/drivers/acpi/processor_pdc.c b/drivers/acpi/processor_pdc.c
deleted file mode 100644 (file)
index e306ba9..0000000
+++ /dev/null
@@ -1,209 +0,0 @@
-/*
- * Copyright (C) 2005 Intel Corporation
- * Copyright (C) 2009 Hewlett-Packard Development Company, L.P.
- *
- *     Alex Chiang <achiang@hp.com>
- *     - Unified x86/ia64 implementations
- *     Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
- *     - Added _PDC for platforms with Intel CPUs
- */
-#include <linux/dmi.h>
-
-#include <acpi/acpi_drivers.h>
-#include <acpi/processor.h>
-
-#include "internal.h"
-
-#define PREFIX                 "ACPI: "
-#define _COMPONENT             ACPI_PROCESSOR_COMPONENT
-ACPI_MODULE_NAME("processor_pdc");
-
-static int set_no_mwait(const struct dmi_system_id *id)
-{
-       printk(KERN_NOTICE PREFIX "%s detected - "
-               "disabling mwait for CPU C-states\n", id->ident);
-       idle_nomwait = 1;
-       return 0;
-}
-
-static struct dmi_system_id __cpuinitdata processor_idle_dmi_table[] = {
-       {
-       set_no_mwait, "IFL91 board", {
-       DMI_MATCH(DMI_BIOS_VENDOR, "COMPAL"),
-       DMI_MATCH(DMI_SYS_VENDOR, "ZEPTO"),
-       DMI_MATCH(DMI_PRODUCT_VERSION, "3215W"),
-       DMI_MATCH(DMI_BOARD_NAME, "IFL91") }, NULL},
-       {
-       set_no_mwait, "Extensa 5220", {
-       DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
-       DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
-       DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
-       DMI_MATCH(DMI_BOARD_NAME, "Columbia") }, NULL},
-       {},
-};
-
-static void acpi_set_pdc_bits(u32 *buf)
-{
-       buf[0] = ACPI_PDC_REVISION_ID;
-       buf[1] = 1;
-
-       /* Enable coordination with firmware's _TSD info */
-       buf[2] = ACPI_PDC_SMP_T_SWCOORD;
-
-       /* Twiddle arch-specific bits needed for _PDC */
-       arch_acpi_set_pdc_bits(buf);
-}
-
-static struct acpi_object_list *acpi_processor_alloc_pdc(void)
-{
-       struct acpi_object_list *obj_list;
-       union acpi_object *obj;
-       u32 *buf;
-
-       /* allocate and initialize pdc. It will be used later. */
-       obj_list = kmalloc(sizeof(struct acpi_object_list), GFP_KERNEL);
-       if (!obj_list) {
-               printk(KERN_ERR "Memory allocation error\n");
-               return NULL;
-       }
-
-       obj = kmalloc(sizeof(union acpi_object), GFP_KERNEL);
-       if (!obj) {
-               printk(KERN_ERR "Memory allocation error\n");
-               kfree(obj_list);
-               return NULL;
-       }
-
-       buf = kmalloc(12, GFP_KERNEL);
-       if (!buf) {
-               printk(KERN_ERR "Memory allocation error\n");
-               kfree(obj);
-               kfree(obj_list);
-               return NULL;
-       }
-
-       acpi_set_pdc_bits(buf);
-
-       obj->type = ACPI_TYPE_BUFFER;
-       obj->buffer.length = 12;
-       obj->buffer.pointer = (u8 *) buf;
-       obj_list->count = 1;
-       obj_list->pointer = obj;
-
-       return obj_list;
-}
-
-/*
- * _PDC is required for a BIOS-OS handshake for most of the newer
- * ACPI processor features.
- */
-static int
-acpi_processor_eval_pdc(acpi_handle handle, struct acpi_object_list *pdc_in)
-{
-       acpi_status status = AE_OK;
-
-       if (idle_nomwait) {
-               /*
-                * If mwait is disabled for CPU C-states, the C2C3_FFH access
-                * mode will be disabled in the parameter of _PDC object.
-                * Of course C1_FFH access mode will also be disabled.
-                */
-               union acpi_object *obj;
-               u32 *buffer = NULL;
-
-               obj = pdc_in->pointer;
-               buffer = (u32 *)(obj->buffer.pointer);
-               buffer[2] &= ~(ACPI_PDC_C_C2C3_FFH | ACPI_PDC_C_C1_FFH);
-
-       }
-       status = acpi_evaluate_object(handle, "_PDC", pdc_in, NULL);
-
-       if (ACPI_FAILURE(status))
-               ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                   "Could not evaluate _PDC, using legacy perf. control.\n"));
-
-       return status;
-}
-
-static int early_pdc_done;
-
-void acpi_processor_set_pdc(acpi_handle handle)
-{
-       struct acpi_object_list *obj_list;
-
-       if (arch_has_acpi_pdc() == false)
-               return;
-
-       if (early_pdc_done)
-               return;
-
-       obj_list = acpi_processor_alloc_pdc();
-       if (!obj_list)
-               return;
-
-       acpi_processor_eval_pdc(handle, obj_list);
-
-       kfree(obj_list->pointer->buffer.pointer);
-       kfree(obj_list->pointer);
-       kfree(obj_list);
-}
-EXPORT_SYMBOL_GPL(acpi_processor_set_pdc);
-
-static int early_pdc_optin;
-static int set_early_pdc_optin(const struct dmi_system_id *id)
-{
-       early_pdc_optin = 1;
-       return 0;
-}
-
-static int param_early_pdc_optin(char *s)
-{
-       early_pdc_optin = 1;
-       return 1;
-}
-__setup("acpi_early_pdc_eval", param_early_pdc_optin);
-
-static struct dmi_system_id __cpuinitdata early_pdc_optin_table[] = {
-       {
-       set_early_pdc_optin, "HP Envy", {
-       DMI_MATCH(DMI_BIOS_VENDOR, "Hewlett-Packard"),
-       DMI_MATCH(DMI_PRODUCT_NAME, "HP Envy") }, NULL},
-       {
-       set_early_pdc_optin, "HP Pavilion dv6", {
-       DMI_MATCH(DMI_BIOS_VENDOR, "Hewlett-Packard"),
-       DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv6") }, NULL},
-       {
-       set_early_pdc_optin, "HP Pavilion dv7", {
-       DMI_MATCH(DMI_BIOS_VENDOR, "Hewlett-Packard"),
-       DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv7") }, NULL},
-       {},
-};
-
-static acpi_status
-early_init_pdc(acpi_handle handle, u32 lvl, void *context, void **rv)
-{
-       acpi_processor_set_pdc(handle);
-       return AE_OK;
-}
-
-void __init acpi_early_processor_set_pdc(void)
-{
-       /*
-        * Check whether the system is DMI table. If yes, OSPM
-        * should not use mwait for CPU-states.
-        */
-       dmi_check_system(processor_idle_dmi_table);
-
-       /*
-        * Allow systems to opt-in to early _PDC evaluation.
-        */
-       dmi_check_system(early_pdc_optin_table);
-       if (!early_pdc_optin)
-               return;
-
-       acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT,
-                           ACPI_UINT32_MAX,
-                           early_init_pdc, NULL, NULL, NULL);
-
-       early_pdc_done = 1;
-}
index 1172c27adadff5d0de2f963ef576b59df807be4c..7bb0b8b9332e69317bdf6067dba99dab1e2836ff 100644 (file)
@@ -320,7 +320,7 @@ static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit)
 
 #endif                         /* CONFIG_CPU_FREQ */
 
-/* in processor_pdc.c */
+/* in processor_core.c */
 void acpi_processor_set_pdc(acpi_handle handle);
 
 /* in processor_throttling.c */