Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964845AbWCACod (ORCPT ); Tue, 28 Feb 2006 21:44:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964842AbWCACod (ORCPT ); Tue, 28 Feb 2006 21:44:33 -0500 Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]:55018 "EHLO fgwmail6.fujitsu.co.jp") by vger.kernel.org with ESMTP id S964845AbWCACoc (ORCPT ); Tue, 28 Feb 2006 21:44:32 -0500 Message-ID: <44050A17.9030506@jp.fujitsu.com> Date: Wed, 01 Mar 2006 11:42:31 +0900 From: Kenji Kaneshige User-Agent: Mozilla Thunderbird 1.0.7 (Windows/20050923) X-Accept-Language: ja, en-us, en MIME-Version: 1.0 To: Kristen Accardi CC: pcihpd-discuss@lists.sourceforge.net, linux-kernel@vger.kernel.org, greg@kroah.com Subject: Re: [Pcihpd-discuss] [patch] pci hotplug: add common acpi functions to core References: <1141174017.28842.6.camel@whizzy> In-Reply-To: <1141174017.28842.6.camel@whizzy> Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 38348 Lines: 1201 Hi Kristen, Here is one more comment. > +void acpi_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; > + } > +} > +EXPORT_SYMBOL_GPL(acpi_get_hp_params_from_firmware); I think the acpi_get_hp_params_from_firmware() function assumes that users set default hpp parameters into *hpp before calling this function. I think it is very hard for new users of the function to notice it, so I think this assumption should be removed. Thanks, Kenji Kaneshige Kristen Accardi wrote: > shpchprm_acpi.c and pciehprm_acpi.c are nearly identical. > In addition, there are functions in both these files that > are also in acpiphp_glue.c. This patch will remove duplicate > functions from shpchp, pciehp, and acpiphp and move this > functionality to pci_hotplug, as it is not hardware specific. > Get rid of shpchprm* and pciehprm* files since they are no longer needed. > shpchprm_nonacpi.c and pciehprm_nonacpi.c are identical, as well > as shpchprm_legacy.c and can be replaced with a macro. > > Signed-off-by: Kristen Carlson Accardi > --- > dev/null |binary > dev/null |binary > drivers/pci/hotplug/pciehprm_acpi.c | 257 --------------------------------- > drivers/pci/hotplug/pciehprm_nonacpi.c | 47 ------ > drivers/pci/hotplug/shpchprm_acpi.c | 186 ----------------------- > drivers/pci/hotplug/shpchprm_legacy.c | 54 ------ > drivers/pci/hotplug/shpchprm_nonacpi.c | 57 ------- > drivers/pci/hotplug/Makefile | 17 -- > drivers/pci/hotplug/acpi_pcihp.c | 201 +++++++++++++++++++++++++ > drivers/pci/hotplug/acpiphp_glue.c | 28 --- > drivers/pci/hotplug/pci_hotplug.h | 17 ++ > drivers/pci/hotplug/pciehp.h | 19 +- > drivers/pci/hotplug/pciehp_hpc.c | 69 ++++++++ > drivers/pci/hotplug/shpchp.h | 25 +-- > drivers/pci/hotplug/shpchp_core.c | 17 ++ > 13 files changed, 331 insertions(+), 663 deletions(-) > > --- 2.6-git-gregkh.orig/drivers/pci/hotplug/Makefile > +++ 2.6-git-gregkh/drivers/pci/hotplug/Makefile > @@ -22,6 +22,9 @@ ifdef CONFIG_HOTPLUG_PCI_CPCI > pci_hotplug-objs += cpci_hotplug_core.o \ > cpci_hotplug_pci.o > endif > +ifdef CONFIG_ACPI > +pci_hotplug-objs += acpi_pcihp.o > +endif > > cpqphp-objs := cpqphp_core.o \ > cpqphp_ctrl.o \ > @@ -51,23 +54,9 @@ pciehp-objs := pciehp_core.o \ > pciehp_ctrl.o \ > pciehp_pci.o \ > pciehp_hpc.o > -ifdef CONFIG_ACPI > - pciehp-objs += pciehprm_acpi.o > -else > - pciehp-objs += pciehprm_nonacpi.o > -endif > > shpchp-objs := shpchp_core.o \ > shpchp_ctrl.o \ > shpchp_pci.o \ > shpchp_sysfs.o \ > shpchp_hpc.o > -ifdef CONFIG_ACPI > - shpchp-objs += shpchprm_acpi.o > -else > - ifdef CONFIG_HOTPLUG_PCI_SHPC_PHPRM_LEGACY > - shpchp-objs += shpchprm_legacy.o > - else > - shpchp-objs += shpchprm_nonacpi.o > - endif > -endif > --- /dev/null > +++ 2.6-git-gregkh/drivers/pci/hotplug/acpi_pcihp.c > @@ -0,0 +1,201 @@ > +/* > + * ACPI related functions for PCI hotplug drivers > + * > + * Copyright (C) 2006 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 > + * > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include "pci_hotplug.h" > + > +#define METHOD_NAME__SUN "_SUN" > +#define METHOD_NAME__HPP "_HPP" > +#define METHOD_NAME_OSHP "OSHP" > + > +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; > +} > +EXPORT_SYMBOL_GPL(acpi_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) { > + printk(KERN_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)) { > + pr_debug("%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) { > + printk(KERN_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: > + printk(KERN_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]; > + > + pr_debug(" _HPP: cache_line_size=0x%x\n", hpp->cache_line_size); > + pr_debug(" _HPP: latency timer =0x%x\n", hpp->latency_timer); > + pr_debug(" _HPP: enable SERR =0x%x\n", hpp->enable_serr); > + pr_debug(" _HPP: enable PERR =0x%x\n", hpp->enable_perr); > + > +free_and_return: > + kfree(ret_buf.pointer); > + return status; > +} > + > +acpi_status 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)) { > + printk(KERN_ERR "%s:%s OSHP fails=0x%x\n", __FUNCTION__, > + path_name, status); > + } else { > + pr_debug("%s:%s OSHP passes\n", __FUNCTION__, path_name); > + } > + return status; > +} > +EXPORT_SYMBOL_GPL(acpi_run_oshp); > + > + > + > +void acpi_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; > + } > +} > +EXPORT_SYMBOL_GPL(acpi_get_hp_params_from_firmware); > + > + > + > +int is_root_bridge(acpi_handle handle) > +{ > + acpi_status status; > + struct acpi_device_info *info; > + struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; > + int i; > + > + status = acpi_get_object_info(handle, &buffer); > + if (ACPI_SUCCESS(status)) { > + info = buffer.pointer; > + if ((info->valid & ACPI_VALID_HID) && > + !strcmp(PCI_ROOT_HID_STRING, > + info->hardware_id.value)) { > + acpi_os_free(buffer.pointer); > + return 1; > + } > + if (info->valid & ACPI_VALID_CID) { > + for (i=0; i < info->compatibility_id.count; i++) { > + if (!strcmp(PCI_ROOT_HID_STRING, > + info->compatibility_id.id[i].value)) { > + acpi_os_free(buffer.pointer); > + return 1; > + } > + } > + } > + } > + return 0; > +} > +EXPORT_SYMBOL_GPL(is_root_bridge); > --- 2.6-git-gregkh.orig/drivers/pci/hotplug/acpiphp_glue.c > +++ 2.6-git-gregkh/drivers/pci/hotplug/acpiphp_glue.c > @@ -1408,34 +1408,6 @@ void handle_hotplug_event_func(acpi_hand > } > } > > -static int is_root_bridge(acpi_handle handle) > -{ > - acpi_status status; > - struct acpi_device_info *info; > - struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; > - int i; > - > - status = acpi_get_object_info(handle, &buffer); > - if (ACPI_SUCCESS(status)) { > - info = buffer.pointer; > - if ((info->valid & ACPI_VALID_HID) && > - !strcmp(PCI_ROOT_HID_STRING, > - info->hardware_id.value)) { > - acpi_os_free(buffer.pointer); > - return 1; > - } > - if (info->valid & ACPI_VALID_CID) { > - for (i=0; i < info->compatibility_id.count; i++) { > - if (!strcmp(PCI_ROOT_HID_STRING, > - info->compatibility_id.id[i].value)) { > - acpi_os_free(buffer.pointer); > - return 1; > - } > - } > - } > - } > - return 0; > -} > > static acpi_status > find_root_bridges(acpi_handle handle, u32 lvl, void *context, void **rv) > --- 2.6-git-gregkh.orig/drivers/pci/hotplug/pci_hotplug.h > +++ 2.6-git-gregkh/drivers/pci/hotplug/pci_hotplug.h > @@ -176,5 +176,22 @@ extern int pci_hp_change_slot_info (stru > struct hotplug_slot_info *info); > extern struct subsystem pci_hotplug_slots_subsys; > > +struct hotplug_params { > + u8 cache_line_size; > + u8 latency_timer; > + u8 enable_serr; > + u8 enable_perr; > +}; > + > +#ifdef CONFIG_ACPI > +#include > +#include > +#include > +extern acpi_status acpi_run_oshp(acpi_handle handle); > +extern void acpi_get_hp_params_from_firmware(struct pci_dev *dev, > + struct hotplug_params *hpp); > +extern u8 * acpi_path_name( acpi_handle handle); > +int is_root_bridge(acpi_handle handle); > +#endif > #endif > > --- 2.6-git-gregkh.orig/drivers/pci/hotplug/pciehp.h > +++ 2.6-git-gregkh/drivers/pci/hotplug/pciehp.h > @@ -50,12 +50,6 @@ extern int pciehp_force; > #define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME , ## arg) > #define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME , ## arg) > > -struct hotplug_params { > - u8 cache_line_size; > - u8 latency_timer; > - u8 enable_serr; > - u8 enable_perr; > -}; > > struct slot { > struct slot *next; > @@ -192,9 +186,6 @@ extern u8 pciehp_handle_power_fault (u8 > /* pci functions */ > extern int pciehp_configure_device (struct slot *p_slot); > extern int pciehp_unconfigure_device (struct slot *p_slot); > -extern int pciehp_get_hp_hw_control_from_firmware(struct pci_dev *dev); > -extern void pciehp_get_hp_params_from_firmware(struct pci_dev *dev, > - struct hotplug_params *hpp); > > > > @@ -286,4 +277,14 @@ struct hpc_ops { > int (*check_lnk_status) (struct controller *ctrl); > }; > > + > +#ifdef CONFIG_ACPI > +#define pciehp_get_hp_hw_control_from_firmware(dev) \ > + pciehp_acpi_get_hp_hw_control_from_firmware(dev) > +#define pciehp_get_hp_params_from_firmware(dev, hpp) \ > + acpi_get_hp_params_from_firmware(dev, hpp) > +#else > +#define pciehp_get_hp_hw_control_from_firmware(dev) 0 > +#define acpi_get_hp_params_from_firmware(dev, hpp) > +#endif /* CONFIG_ACPI */ > #endif /* _PCIEHP_H */ > --- 2.6-git-gregkh.orig/drivers/pci/hotplug/pciehp_hpc.c > +++ 2.6-git-gregkh/drivers/pci/hotplug/pciehp_hpc.c > @@ -38,6 +38,9 @@ > > #include "../pci.h" > #include "pciehp.h" > +#ifdef CONFIG_ACPI > +#include > +#endif > > #ifdef DEBUG > #define DBG_K_TRACE_ENTRY ((unsigned int)0x00000001) /* On function entry */ > @@ -1236,6 +1239,72 @@ static struct hpc_ops pciehp_hpc_ops = { > .check_lnk_status = hpc_check_lnk_status, > }; > > +#ifdef CONFIG_ACPI > +int pciehp_acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev) > +{ > + acpi_status status; > + acpi_handle chandle, handle = DEVICE_ACPI_HANDLE(&(dev->dev)); > + struct pci_dev *pdev = dev; > + struct pci_bus *parent; > + u8 *path_name; > + > + /* > + * Per PCI firmware specification, we should run the ACPI _OSC > + * method to get control of hotplug hardware before using it. > + * If an _OSC is missing, we look for an OSHP to do the same thing. > + * To handle different BIOS behavior, we look for _OSC and OSHP > + * within the scope of the hotplug controller and its parents, upto > + * the host bridge under which this controller exists. > + */ > + while (!handle) { > + /* > + * This hotplug controller was not listed in the ACPI name > + * space at all. Try to get acpi handle of parent pci bus. > + */ > + if (!pdev || !pdev->bus->parent) > + break; > + parent = pdev->bus->parent; > + dbg("Could not find %s in acpi namespace, trying parent\n", > + pci_name(pdev)); > + if (!parent->self) > + /* Parent must be a host bridge */ > + handle = acpi_get_pci_rootbridge_handle( > + pci_domain_nr(parent), > + parent->number); > + else > + handle = DEVICE_ACPI_HANDLE( > + &(parent->self->dev)); > + pdev = parent->self; > + } > + > + while (handle) { > + path_name = acpi_path_name(handle); > + dbg("Trying to get hotplug control for %s \n", path_name); > + status = pci_osc_control_set(handle, > + OSC_PCI_EXPRESS_NATIVE_HP_CONTROL); > + if (status == AE_NOT_FOUND) > + status = acpi_run_oshp(handle); > + if (ACPI_SUCCESS(status)) { > + dbg("Gained control for hotplug HW for pci %s (%s)\n", > + pci_name(dev), path_name); > + return 0; > + } > + if (is_root_bridge(handle)) > + break; > + chandle = handle; > + status = acpi_get_parent(chandle, &handle); > + if (ACPI_FAILURE(status)) > + break; > + } > + > + err("Cannot get control of hotplug hardware for pci %s\n", > + pci_name(dev)); > + return -1; > +} > +#endif > + > + > + > int pcie_init(struct controller * ctrl, struct pcie_device *dev) > { > struct php_ctlr_state_s *php_ctlr, *p; > --- 2.6-git-gregkh.orig/drivers/pci/hotplug/pciehprm_acpi.c > +++ /dev/null > @@ -1,257 +0,0 @@ > -/* > - * PCIEHPRM 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 > - * > - */ > - > -#include > -#include > -#include > -#include > -#include > -#include > -#include > -#include > -#include "pciehp.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 acpi_status 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)) { > - dbg("%s:%s OSHP fails=0x%x\n", __FUNCTION__, path_name, > - status); > - } else { > - dbg("%s:%s OSHP passes\n", __FUNCTION__, path_name); > - } > - return status; > -} > - > -static int is_root_bridge(acpi_handle handle) > -{ > - acpi_status status; > - struct acpi_device_info *info; > - struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; > - int i; > - > - status = acpi_get_object_info(handle, &buffer); > - if (ACPI_SUCCESS(status)) { > - info = buffer.pointer; > - if ((info->valid & ACPI_VALID_HID) && > - !strcmp(PCI_ROOT_HID_STRING, > - info->hardware_id.value)) { > - acpi_os_free(buffer.pointer); > - return 1; > - } > - if (info->valid & ACPI_VALID_CID) { > - for (i=0; i < info->compatibility_id.count; i++) { > - if (!strcmp(PCI_ROOT_HID_STRING, > - info->compatibility_id.id[i].value)) { > - acpi_os_free(buffer.pointer); > - return 1; > - } > - } > - } > - } > - return 0; > -} > - > -int pciehp_get_hp_hw_control_from_firmware(struct pci_dev *dev) > -{ > - acpi_status status; > - acpi_handle chandle, handle = DEVICE_ACPI_HANDLE(&(dev->dev)); > - struct pci_dev *pdev = dev; > - struct pci_bus *parent; > - u8 *path_name; > - > - /* > - * Per PCI firmware specification, we should run the ACPI _OSC > - * method to get control of hotplug hardware before using it. > - * If an _OSC is missing, we look for an OSHP to do the same thing. > - * To handle different BIOS behavior, we look for _OSC and OSHP > - * within the scope of the hotplug controller and its parents, upto > - * the host bridge under which this controller exists. > - */ > - while (!handle) { > - /* > - * This hotplug controller was not listed in the ACPI name > - * space at all. Try to get acpi handle of parent pci bus. > - */ > - if (!pdev || !pdev->bus->parent) > - break; > - parent = pdev->bus->parent; > - dbg("Could not find %s in acpi namespace, trying parent\n", > - pci_name(pdev)); > - if (!parent->self) > - /* Parent must be a host bridge */ > - handle = acpi_get_pci_rootbridge_handle( > - pci_domain_nr(parent), > - parent->number); > - else > - handle = DEVICE_ACPI_HANDLE( > - &(parent->self->dev)); > - pdev = parent->self; > - } > - > - while (handle) { > - path_name = acpi_path_name(handle); > - dbg("Trying to get hotplug control for %s \n", path_name); > - status = pci_osc_control_set(handle, > - OSC_PCI_EXPRESS_NATIVE_HP_CONTROL); > - if (status == AE_NOT_FOUND) > - status = acpi_run_oshp(handle); > - if (ACPI_SUCCESS(status)) { > - dbg("Gained control for hotplug HW for pci %s (%s)\n", > - pci_name(dev), path_name); > - return 0; > - } > - if (is_root_bridge(handle)) > - break; > - chandle = handle; > - status = acpi_get_parent(chandle, &handle); > - if (ACPI_FAILURE(status)) > - break; > - } > - > - err("Cannot get control of hotplug hardware for pci %s\n", > - pci_name(dev)); > - return -1; > -} > - > -void pciehp_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; > - } > -} > - > --- 2.6-git-gregkh.orig/drivers/pci/hotplug/pciehprm_nonacpi.c > +++ /dev/null > @@ -1,47 +0,0 @@ > -/* > - * PCIEHPRM NONACPI: PHP Resource Manager for Non-ACPI/Legacy platform > - * > - * Copyright (C) 1995,2001 Compaq Computer Corporation > - * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com) > - * Copyright (C) 2001 IBM Corp. > - * 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 , > - * > - */ > - > -#include > -#include > -#include > -#include > -#include > -#include > -#include "pciehp.h" > - > -void pciehp_get_hp_params_from_firmware(struct pci_dev *dev, > - struct hotplug_params *hpp) > -{ > - return; > -} > - > -int pciehp_get_hp_hw_control_from_firmware(struct pci_dev *dev) > -{ > - return 0; > -} > --- 2.6-git-gregkh.orig/drivers/pci/hotplug/shpchp.h > +++ 2.6-git-gregkh/drivers/pci/hotplug/shpchp.h > @@ -106,12 +106,6 @@ struct controller { > volatile int cmd_busy; > }; > > -struct hotplug_params { > - u8 cache_line_size; > - u8 latency_timer; > - u8 enable_serr; > - u8 enable_perr; > -}; > > /* Define AMD SHPC ID */ > #define PCI_DEVICE_ID_AMD_GOLAM_7450 0x7450 > @@ -193,15 +187,24 @@ extern u8 shpchp_handle_power_fault(u8 h > extern int shpchp_save_config(struct controller *ctrl, int busnumber, int num_ctlr_slots, int first_device_num); > extern int shpchp_configure_device(struct slot *p_slot); > extern int shpchp_unconfigure_device(struct slot *p_slot); > -extern void get_hp_hw_control_from_firmware(struct pci_dev *dev); > -extern void get_hp_params_from_firmware(struct pci_dev *dev, > - struct hotplug_params *hpp); > -extern int shpchprm_get_physical_slot_number(struct controller *ctrl, > - u32 *sun, u8 busnum, u8 devnum); > extern void shpchp_remove_ctrl_files(struct controller *ctrl); > extern void cleanup_slots(struct controller *ctrl); > extern void queue_pushbutton_work(void *data); > > + > +#ifdef CONFIG_ACPI > +#define get_hp_params_from_firmware(dev, hpp) \ > + acpi_get_hp_params_from_firmware(dev, hpp) > +#define get_hp_hw_control_from_firmware(pdev) \ > + do { \ > + if (DEVICE_ACPI_HANDLE(&(pdev->dev))) \ > + acpi_run_oshp(DEVICE_ACPI_HANDLE(&(pdev->dev))); \ > + } while (0) > +#else > +#define get_hp_params_from_firmware(dev, hpp) > +#define get_hp_hw_control_from_firmware(dev) > +#endif > + > struct ctrl_reg { > volatile u32 base_offset; > volatile u32 slot_avail1; > --- 2.6-git-gregkh.orig/drivers/pci/hotplug/shpchp_core.c > +++ 2.6-git-gregkh/drivers/pci/hotplug/shpchp_core.c > @@ -104,6 +104,23 @@ static void make_slot_name(struct slot * > slot->bus, slot->number); > } > > + > + > + > +static 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; > +} > + > + > + > static int init_slots(struct controller *ctrl) > { > struct slot *slot; > --- 2.6-git-gregkh.orig/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 > - * > - */ > - > -#include > -#include > -#include > -#include > -#include > -#include > -#include > -#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; > - } > -} > - > --- 2.6-git-gregkh.orig/drivers/pci/hotplug/shpchprm_legacy.c > +++ /dev/null > @@ -1,54 +0,0 @@ > -/* > - * SHPCHPRM Legacy: PHP Resource Manager for Non-ACPI/Legacy platform > - * > - * Copyright (C) 1995,2001 Compaq Computer Corporation > - * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com) > - * Copyright (C) 2001 IBM Corp. > - * 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 , > - * > - */ > - > -#include > -#include > -#include > -#include > -#include "shpchp.h" > - > -int shpchprm_get_physical_slot_number(struct controller *ctrl, u32 *sun, u8 busnum, u8 devnum) > -{ > - int offset = devnum - ctrl->slot_device_offset; > - > - *sun = (u8) (ctrl->first_slot + ctrl->slot_num_inc * offset); > - return 0; > -} > - > -void get_hp_params_from_firmware(struct pci_dev *dev, > - struct hotplug_params *hpp) > -{ > - return; > -} > - > -void get_hp_hw_control_from_firmware(struct pci_dev *dev) > -{ > - return; > -} > - > --- 2.6-git-gregkh.orig/drivers/pci/hotplug/shpchprm_nonacpi.c > +++ /dev/null > @@ -1,57 +0,0 @@ > -/* > - * SHPCHPRM NONACPI: PHP Resource Manager for Non-ACPI/Legacy platform > - * > - * Copyright (C) 1995,2001 Compaq Computer Corporation > - * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com) > - * Copyright (C) 2001 IBM Corp. > - * 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 , > - * > - */ > - > -#include > -#include > -#include > -#include > -#include > -#include > - > -#include "shpchp.h" > - > -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_params_from_firmware(struct pci_dev *dev, > - struct hotplug_params *hpp) > -{ > - return; > -} > - > -void get_hp_hw_control_from_firmware(struct pci_dev *dev) > -{ > - return; > -} > > > > ------------------------------------------------------- > This SF.Net email is sponsored by xPML, a groundbreaking scripting language > that extends applications into web and mobile media. Attend the live webcast > and join the prime developer group breaking into this new coding territory! > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 > _______________________________________________ > Pcihpd-discuss mailing list > Pcihpd-discuss@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/pcihpd-discuss > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/