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path: root/drivers/pci/hotplug/shpchprm_acpi.c
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Diffstat (limited to 'drivers/pci/hotplug/shpchprm_acpi.c')
-rw-r--r--drivers/pci/hotplug/shpchprm_acpi.c186
1 files changed, 0 insertions, 186 deletions
diff --git a/drivers/pci/hotplug/shpchprm_acpi.c b/drivers/pci/hotplug/shpchprm_acpi.c
deleted file mode 100644
index 17145e52223a..000000000000
--- a/drivers/pci/hotplug/shpchprm_acpi.c
+++ /dev/null
@@ -1,186 +0,0 @@
-/*
- * SHPCHPRM ACPI: PHP Resource Manager for ACPI platform
- *
- * Copyright (C) 2003-2004 Intel Corporation
- *
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Send feedback to <kristen.c.accardi@intel.com>
- *
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <acpi/acpi.h>
-#include <acpi/acpi_bus.h>
-#include <acpi/actypes.h>
-#include "shpchp.h"
-
-#define METHOD_NAME__SUN "_SUN"
-#define METHOD_NAME__HPP "_HPP"
-#define METHOD_NAME_OSHP "OSHP"
-
-static u8 * acpi_path_name( acpi_handle handle)
-{
- acpi_status status;
- static u8 path_name[ACPI_PATHNAME_MAX];
- struct acpi_buffer ret_buf = { ACPI_PATHNAME_MAX, path_name };
-
- memset(path_name, 0, sizeof (path_name));
- status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &ret_buf);
-
- if (ACPI_FAILURE(status))
- return NULL;
- else
- return path_name;
-}
-
-static acpi_status
-acpi_run_hpp(acpi_handle handle, struct hotplug_params *hpp)
-{
- acpi_status status;
- u8 nui[4];
- struct acpi_buffer ret_buf = { 0, NULL};
- union acpi_object *ext_obj, *package;
- u8 *path_name = acpi_path_name(handle);
- int i, len = 0;
-
- /* get _hpp */
- status = acpi_evaluate_object(handle, METHOD_NAME__HPP, NULL, &ret_buf);
- switch (status) {
- case AE_BUFFER_OVERFLOW:
- ret_buf.pointer = kmalloc (ret_buf.length, GFP_KERNEL);
- if (!ret_buf.pointer) {
- err ("%s:%s alloc for _HPP fail\n", __FUNCTION__,
- path_name);
- return AE_NO_MEMORY;
- }
- status = acpi_evaluate_object(handle, METHOD_NAME__HPP,
- NULL, &ret_buf);
- if (ACPI_SUCCESS(status))
- break;
- default:
- if (ACPI_FAILURE(status)) {
- dbg("%s:%s _HPP fail=0x%x\n", __FUNCTION__,
- path_name, status);
- return status;
- }
- }
-
- ext_obj = (union acpi_object *) ret_buf.pointer;
- if (ext_obj->type != ACPI_TYPE_PACKAGE) {
- err ("%s:%s _HPP obj not a package\n", __FUNCTION__,
- path_name);
- status = AE_ERROR;
- goto free_and_return;
- }
-
- len = ext_obj->package.count;
- package = (union acpi_object *) ret_buf.pointer;
- for ( i = 0; (i < len) || (i < 4); i++) {
- ext_obj = (union acpi_object *) &package->package.elements[i];
- switch (ext_obj->type) {
- case ACPI_TYPE_INTEGER:
- nui[i] = (u8)ext_obj->integer.value;
- break;
- default:
- err ("%s:%s _HPP obj type incorrect\n", __FUNCTION__,
- path_name);
- status = AE_ERROR;
- goto free_and_return;
- }
- }
-
- hpp->cache_line_size = nui[0];
- hpp->latency_timer = nui[1];
- hpp->enable_serr = nui[2];
- hpp->enable_perr = nui[3];
-
- dbg(" _HPP: cache_line_size=0x%x\n", hpp->cache_line_size);
- dbg(" _HPP: latency timer =0x%x\n", hpp->latency_timer);
- dbg(" _HPP: enable SERR =0x%x\n", hpp->enable_serr);
- dbg(" _HPP: enable PERR =0x%x\n", hpp->enable_perr);
-
-free_and_return:
- kfree(ret_buf.pointer);
- return status;
-}
-
-static void acpi_run_oshp(acpi_handle handle)
-{
- acpi_status status;
- u8 *path_name = acpi_path_name(handle);
-
- /* run OSHP */
- status = acpi_evaluate_object(handle, METHOD_NAME_OSHP, NULL, NULL);
- if (ACPI_FAILURE(status)) {
- err("%s:%s OSHP fails=0x%x\n", __FUNCTION__, path_name,
- status);
- } else {
- dbg("%s:%s OSHP passes\n", __FUNCTION__, path_name);
- }
-}
-
-int shpchprm_get_physical_slot_number(struct controller *ctrl, u32 *sun, u8 busnum, u8 devnum)
-{
- int offset = devnum - ctrl->slot_device_offset;
-
- dbg("%s: ctrl->slot_num_inc %d, offset %d\n", __FUNCTION__, ctrl->slot_num_inc, offset);
- *sun = (u8) (ctrl->first_slot + ctrl->slot_num_inc *offset);
- return 0;
-}
-
-void get_hp_hw_control_from_firmware(struct pci_dev *dev)
-{
- /*
- * OSHP is an optional ACPI firmware control method. If present,
- * we need to run it to inform BIOS that we will control SHPC
- * hardware from now on.
- */
- acpi_handle handle = DEVICE_ACPI_HANDLE(&(dev->dev));
- if (!handle)
- return;
- acpi_run_oshp(handle);
-}
-
-void get_hp_params_from_firmware(struct pci_dev *dev,
- struct hotplug_params *hpp)
-{
- acpi_status status = AE_NOT_FOUND;
- struct pci_dev *pdev = dev;
-
- /*
- * _HPP settings apply to all child buses, until another _HPP is
- * encountered. If we don't find an _HPP for the input pci dev,
- * look for it in the parent device scope since that would apply to
- * this pci dev. If we don't find any _HPP, use hardcoded defaults
- */
- while (pdev && (ACPI_FAILURE(status))) {
- acpi_handle handle = DEVICE_ACPI_HANDLE(&(pdev->dev));
- if (!handle)
- break;
- status = acpi_run_hpp(handle, hpp);
- if (!(pdev->bus->parent))
- break;
- /* Check if a parent object supports _HPP */
- pdev = pdev->bus->parent->self;
- }
-}
-