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-rw-r--r--drivers/pci/hotplug/pciehp.h11
-rw-r--r--drivers/pci/hotplug/pciehp_core.c20
-rw-r--r--drivers/pci/hotplug/pciehp_ctrl.c1
-rw-r--r--drivers/pci/hotplug/pciehp_hpc.c4
-rw-r--r--drivers/pci/hotplug/pciehprm.h52
-rw-r--r--drivers/pci/hotplug/pciehprm_acpi.c838
-rw-r--r--drivers/pci/hotplug/pciehprm_nonacpi.c107
-rw-r--r--drivers/pci/hotplug/pciehprm_nonacpi.h56
8 files changed, 96 insertions, 993 deletions
diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
index e9480ddd5abf..e9c09566f851 100644
--- a/drivers/pci/hotplug/pciehp.h
+++ b/drivers/pci/hotplug/pciehp.h
@@ -49,6 +49,13 @@ extern int pciehp_debug;
#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 pci_func {
struct pci_func *next;
u8 bus;
@@ -199,6 +206,10 @@ extern int pciehp_save_config (struct controller *ctrl, int busnumber, int num
extern int pciehp_save_slot_config (struct controller *ctrl, struct pci_func * new_slot);
extern int pciehp_configure_device (struct slot *ctrl);
extern int pciehp_unconfigure_device (struct pci_func* func);
+extern int 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);
+
/* Global variables */
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index 190664e5adf4..e20cf8e42bd9 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -39,7 +39,6 @@
#include <linux/init.h>
#include <asm/uaccess.h>
#include "pciehp.h"
-#include "pciehprm.h"
#include <linux/interrupt.h>
/* Global variables */
@@ -381,6 +380,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
dbg("%s: DRV_thread pid = %d\n", __FUNCTION__, current->pid);
pdev = dev->port;
+ ctrl->pci_dev = pdev;
rc = pcie_init(ctrl, dev,
(php_intr_callback_t) pciehp_handle_attention_button,
@@ -392,8 +392,6 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
goto err_out_free_ctrl;
}
- ctrl->pci_dev = pdev;
-
pci_set_drvdata(pdev, ctrl);
ctrl->pci_bus = kmalloc(sizeof(*ctrl->pci_bus), GFP_KERNEL);
@@ -609,18 +607,14 @@ static int __init pcied_init(void)
if (retval)
goto error_hpc_init;
- retval = pciehprm_init(PCI);
- if (!retval) {
- retval = pcie_port_service_register(&hpdriver_portdrv);
- dbg("pcie_port_service_register = %d\n", retval);
- info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
- if (retval)
- dbg("%s: Failure to register service\n", __FUNCTION__);
- }
+ retval = pcie_port_service_register(&hpdriver_portdrv);
+ dbg("pcie_port_service_register = %d\n", retval);
+ info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
+ if (retval)
+ dbg("%s: Failure to register service\n", __FUNCTION__);
error_hpc_init:
if (retval) {
- pciehprm_cleanup();
pciehp_event_stop_thread();
};
@@ -632,8 +626,6 @@ static void __exit pcied_cleanup(void)
dbg("unload_pciehpd()\n");
unload_pciehpd();
- pciehprm_cleanup();
-
dbg("pcie_port_service_unregister\n");
pcie_port_service_unregister(&hpdriver_portdrv);
diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
index 412783e0ef40..d07d4194bc29 100644
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/drivers/pci/hotplug/pciehp_ctrl.c
@@ -40,7 +40,6 @@
#include <linux/pci.h>
#include "../pci.h"
#include "pciehp.h"
-#include "pciehprm.h"
static void interrupt_event_handler(struct controller *ctrl);
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index 7a0e27f0e063..ef79ca1f38da 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -1470,6 +1470,10 @@ int pcie_init(struct controller * ctrl,
}
dbg("%s: SLOT_STATUS offset %x writes slot_status %x\n", __FUNCTION__, SLOT_STATUS(ctrl->cap_base), temp_word);
+ rc = get_hp_hw_control_from_firmware(ctrl->pci_dev);
+ if (rc)
+ goto abort_free_ctlr;
+
/* Add this HPC instance into the HPC list */
spin_lock(&list_lock);
if (php_ctlr_list_head == 0) {
diff --git a/drivers/pci/hotplug/pciehprm.h b/drivers/pci/hotplug/pciehprm.h
deleted file mode 100644
index 05f20fbc5f50..000000000000
--- a/drivers/pci/hotplug/pciehprm.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * PCIEHPRM : PCIEHP Resource Manager for ACPI/non-ACPI platform
- *
- * Copyright (C) 1995,2001 Compaq Computer Corporation
- * Copyright (C) 2001,2003 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 <greg@kroah.com>, <kristen.c.accardi@intel.com>
- *
- */
-
-#ifndef _PCIEHPRM_H_
-#define _PCIEHPRM_H_
-
-#ifdef CONFIG_HOTPLUG_PCI_PCIE_PHPRM_NONACPI
-#include "pciehprm_nonacpi.h"
-#endif
-
-int pciehprm_init(enum php_ctlr_type ct);
-void pciehprm_cleanup(void);
-int pciehprm_print_pirt(void);
-int pciehprm_find_available_resources(struct controller *ctrl);
-int pciehprm_set_hpp(struct controller *ctrl, struct pci_func *func, u8 card_type);
-void pciehprm_enable_card(struct controller *ctrl, struct pci_func *func, u8 card_type);
-
-#ifdef DEBUG
-#define RES_CHECK(this, bits) \
- { if (((this) & (bits - 1))) \
- printk("%s:%d ERR: potential res loss!\n", __FUNCTION__, __LINE__); }
-#else
-#define RES_CHECK(this, bits)
-#endif
-
-#endif /* _PCIEHPRM_H_ */
diff --git a/drivers/pci/hotplug/pciehprm_acpi.c b/drivers/pci/hotplug/pciehprm_acpi.c
index 078550ba2708..c823cfa42eec 100644
--- a/drivers/pci/hotplug/pciehprm_acpi.c
+++ b/drivers/pci/hotplug/pciehprm_acpi.c
@@ -39,70 +39,11 @@
#include <acpi/acpi_bus.h>
#include <acpi/actypes.h>
#include "pciehp.h"
-#include "pciehprm.h"
-
-#define PCI_MAX_BUS 0x100
-#define ACPI_STA_DEVICE_PRESENT 0x01
#define METHOD_NAME__SUN "_SUN"
#define METHOD_NAME__HPP "_HPP"
#define METHOD_NAME_OSHP "OSHP"
-/* Status code for running acpi method to gain native control */
-#define NC_NOT_RUN 0
-#define OSC_NOT_EXIST 1
-#define OSC_RUN_FAILED 2
-#define OSHP_NOT_EXIST 3
-#define OSHP_RUN_FAILED 4
-#define NC_RUN_SUCCESS 5
-
-#define PHP_RES_BUS 0xA0
-#define PHP_RES_IO 0xA1
-#define PHP_RES_MEM 0xA2
-#define PHP_RES_PMEM 0xA3
-
-#define BRIDGE_TYPE_P2P 0x00
-#define BRIDGE_TYPE_HOST 0x01
-
-/* this should go to drivers/acpi/include/ */
-struct acpi__hpp {
- u8 cache_line_size;
- u8 latency_timer;
- u8 enable_serr;
- u8 enable_perr;
-};
-
-struct acpi_php_slot {
- struct acpi_php_slot *next;
- struct acpi_bridge *bridge;
- acpi_handle handle;
- int seg;
- int bus;
- int dev;
- int fun;
- u32 sun;
- void *slot_ops; /* _STA, _EJx, etc */
- struct slot *slot;
-}; /* per func */
-
-struct acpi_bridge {
- struct acpi_bridge *parent;
- struct acpi_bridge *next;
- struct acpi_bridge *child;
- acpi_handle handle;
- int seg;
- int pbus; /* pdev->bus->number */
- int pdevice; /* PCI_SLOT(pdev->devfn) */
- int pfunction; /* PCI_DEVFN(pdev->devfn) */
- int bus; /* pdev->subordinate->number */
- struct acpi__hpp *_hpp;
- struct acpi_php_slot *slots;
- int scanned;
- int type;
-};
-
-static struct acpi_bridge *acpi_bridges_head;
-
static u8 * acpi_path_name( acpi_handle handle)
{
acpi_status status;
@@ -118,85 +59,43 @@ static u8 * acpi_path_name( acpi_handle handle)
return path_name;
}
-static void acpi_get__hpp ( struct acpi_bridge *ab);
-static int acpi_run_oshp ( struct acpi_bridge *ab);
-static int osc_run_status = NC_NOT_RUN;
-static int oshp_run_status = NC_NOT_RUN;
-
-static int acpi_add_slot_to_php_slots(
- struct acpi_bridge *ab,
- int bus_num,
- acpi_handle handle,
- u32 adr,
- u32 sun
- )
-{
- struct acpi_php_slot *aps;
- static long samesun = -1;
-
- aps = (struct acpi_php_slot *) kmalloc (sizeof(struct acpi_php_slot), GFP_KERNEL);
- if (!aps) {
- err ("acpi_pciehprm: alloc for aps fail\n");
- return -1;
- }
- memset(aps, 0, sizeof(struct acpi_php_slot));
-
- aps->handle = handle;
- aps->bus = bus_num;
- aps->dev = (adr >> 16) & 0xffff;
- aps->fun = adr & 0xffff;
- aps->sun = sun;
-
- aps->next = ab->slots; /* cling to the bridge */
- aps->bridge = ab;
- ab->slots = aps;
-
- ab->scanned += 1;
- if (!ab->_hpp)
- acpi_get__hpp(ab);
-
- if (osc_run_status == OSC_NOT_EXIST)
- oshp_run_status = acpi_run_oshp(ab);
-
- if (sun != samesun) {
- info("acpi_pciehprm: Slot sun(%x) at s:b:d:f=0x%02x:%02x:%02x:%02x\n",
- aps->sun, ab->seg, aps->bus, aps->dev, aps->fun);
- samesun = sun;
- }
- return 0;
-}
-
-static void acpi_get__hpp ( struct acpi_bridge *ab)
+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(ab->handle);
+ u8 *path_name = acpi_path_name(handle);
int i, len = 0;
/* get _hpp */
- status = acpi_evaluate_object(ab->handle, METHOD_NAME__HPP, NULL, &ret_buf);
+ 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 ("acpi_pciehprm:%s alloc for _HPP fail\n", path_name);
- return;
+ err ("%s:%s alloc for _HPP fail\n", __FUNCTION__,
+ path_name);
+ return AE_NO_MEMORY;
}
- status = acpi_evaluate_object(ab->handle, METHOD_NAME__HPP, NULL, &ret_buf);
+ status = acpi_evaluate_object(handle, METHOD_NAME__HPP,
+ NULL, &ret_buf);
if (ACPI_SUCCESS(status))
break;
default:
if (ACPI_FAILURE(status)) {
- err("acpi_pciehprm:%s _HPP fail=0x%x\n", path_name, status);
- return;
+ 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 ("acpi_pciehprm:%s _HPP obj not a package\n", path_name);
+ err ("%s:%s _HPP obj not a package\n", __FUNCTION__,
+ path_name);
+ status = AE_ERROR;
goto free_and_return;
}
@@ -209,689 +108,94 @@ static void acpi_get__hpp ( struct acpi_bridge *ab)
nui[i] = (u8)ext_obj->integer.value;
break;
default:
- err ("acpi_pciehprm:%s _HPP obj type incorrect\n", path_name);
+ err ("%s:%s _HPP obj type incorrect\n", __FUNCTION__,
+ path_name);
+ status = AE_ERROR;
goto free_and_return;
}
}
- ab->_hpp = kmalloc (sizeof (struct acpi__hpp), GFP_KERNEL);
- if (!ab->_hpp) {
- err ("acpi_pciehprm:%s alloc for _HPP failed\n", path_name);
- goto free_and_return;
- }
- memset(ab->_hpp, 0, sizeof(struct acpi__hpp));
+ hpp->cache_line_size = nui[0];
+ hpp->latency_timer = nui[1];
+ hpp->enable_serr = nui[2];
+ hpp->enable_perr = nui[3];
- ab->_hpp->cache_line_size = nui[0];
- ab->_hpp->latency_timer = nui[1];
- ab->_hpp->enable_serr = nui[2];
- ab->_hpp->enable_perr = nui[3];
-
- dbg(" _HPP: cache_line_size=0x%x\n", ab->_hpp->cache_line_size);
- dbg(" _HPP: latency timer =0x%x\n", ab->_hpp->latency_timer);
- dbg(" _HPP: enable SERR =0x%x\n", ab->_hpp->enable_serr);
- dbg(" _HPP: enable PERR =0x%x\n", ab->_hpp->enable_perr);
+ 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 int acpi_run_oshp ( struct acpi_bridge *ab)
+static acpi_status acpi_run_oshp(acpi_handle handle)
{
acpi_status status;
- u8 *path_name = acpi_path_name(ab->handle);
+ u8 *path_name = acpi_path_name(handle);
/* run OSHP */
- status = acpi_evaluate_object(ab->handle, METHOD_NAME_OSHP, NULL, NULL);
+ status = acpi_evaluate_object(handle, METHOD_NAME_OSHP, NULL, NULL);
if (ACPI_FAILURE(status)) {
- err("acpi_pciehprm:%s OSHP fails=0x%x\n", path_name, status);
- oshp_run_status = (status == AE_NOT_FOUND) ? OSHP_NOT_EXIST : OSHP_RUN_FAILED;
+ err("%s:%s OSHP fails=0x%x\n", __FUNCTION__, path_name,
+ status);
} else {
- oshp_run_status = NC_RUN_SUCCESS;
- dbg("acpi_pciehprm:%s OSHP passes =0x%x\n", path_name, status);
- dbg("acpi_pciehprm:%s oshp_run_status =0x%x\n", path_name, oshp_run_status);
- }
- return oshp_run_status;
-}
-
-/* find acpi_bridge downword from ab. */
-static struct acpi_bridge *
-find_acpi_bridge_by_bus(
- struct acpi_bridge *ab,
- int seg,
- int bus /* pdev->subordinate->number */
- )
-{
- struct acpi_bridge *lab = NULL;
-
- if (!ab)
- return NULL;
-
- if ((ab->bus == bus) && (ab->seg == seg))
- return ab;
-
- if (ab->child)
- lab = find_acpi_bridge_by_bus(ab->child, seg, bus);
-
- if (!lab)
- if (ab->next)
- lab = find_acpi_bridge_by_bus(ab->next, seg, bus);
-
- return lab;
-}
-
-/*
- * Build a device tree of ACPI PCI Bridges
- */
-static void pciehprm_acpi_register_a_bridge (
- struct acpi_bridge **head,
- struct acpi_bridge *pab, /* parent bridge to which child bridge is added */
- struct acpi_bridge *cab /* child bridge to add */
- )
-{
- struct acpi_bridge *lpab;
- struct acpi_bridge *lcab;
-
- lpab = find_acpi_bridge_by_bus(*head, pab->seg, pab->bus);
- if (!lpab) {
- if (!(pab->type & BRIDGE_TYPE_HOST))
- warn("PCI parent bridge s:b(%x:%x) not in list.\n", pab->seg, pab->bus);
- pab->next = *head;
- *head = pab;
- lpab = pab;
+ dbg("%s:%s OSHP passes\n", __FUNCTION__, path_name);
}
-
- if ((cab->type & BRIDGE_TYPE_HOST) && (pab == cab))
- return;
-
- lcab = find_acpi_bridge_by_bus(*head, cab->seg, cab->bus);
- if (lcab) {
- if ((pab->bus != lcab->parent->bus) || (lcab->bus != cab->bus))
- err("PCI child bridge s:b(%x:%x) in list with diff parent.\n", cab->seg, cab->bus);
- return;
- } else
- lcab = cab;
-
- lcab->parent = lpab;
- lcab->next = lpab->child;
- lpab->child = lcab;
+ return status;
}
-static acpi_status pciehprm_acpi_build_php_slots_callback(
- acpi_handle handle,
- u32 Level,
- void *context,
- void **retval
- )
+int get_hp_hw_control_from_firmware(struct pci_dev *dev)
{
- ulong bus_num;
- ulong seg_num;
- ulong sun, adr;
- ulong padr = 0;
- acpi_handle phandle = NULL;
- struct acpi_bridge *pab = (struct acpi_bridge *)context;
- struct acpi_bridge *lab;
- acpi_status status;
- u8 *path_name = acpi_path_name(handle);
-
- /* get _SUN */
- status = acpi_evaluate_integer(handle, METHOD_NAME__SUN, NULL, &sun);
- switch(status) {
- case AE_NOT_FOUND:
- return AE_OK;
- default:
- if (ACPI_FAILURE(status)) {
- err("acpi_pciehprm:%s _SUN fail=0x%x\n", path_name, status);
- return status;
- }
- }
-
- /* get _ADR. _ADR must exist if _SUN exists */
- status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &adr);
- if (ACPI_FAILURE(status)) {
- err("acpi_pciehprm:%s _ADR fail=0x%x\n", path_name, status);
- return status;
- }
-
- dbg("acpi_pciehprm:%s sun=0x%08x adr=0x%08x\n", path_name, (u32)sun, (u32)adr);
-
- status = acpi_get_parent(handle, &phandle);
- if (ACPI_FAILURE(status)) {
- err("acpi_pciehprm:%s get_parent fail=0x%x\n", path_name, status);
- return (status);
- }
-
- bus_num = pab->bus;
- seg_num = pab->seg;
-
- if (pab->bus == bus_num) {
- lab = pab;
- } else {
- dbg("WARN: pab is not parent\n");
- lab = find_acpi_bridge_by_bus(pab, seg_num, bus_num);
- if (!lab) {
- dbg("acpi_pciehprm: alloc new P2P bridge(%x) for sun(%08x)\n", (u32)bus_num, (u32)sun);
- lab = (struct acpi_bridge *)kmalloc(sizeof(struct acpi_bridge), GFP_KERNEL);
- if (!lab) {
- err("acpi_pciehprm: alloc for ab fail\n");
- return AE_NO_MEMORY;
- }
- memset(lab, 0, sizeof(struct acpi_bridge));
-
- lab->handle = phandle;
- lab->pbus = pab->bus;
- lab->pdevice = (int)(padr >> 16) & 0xffff;
- lab->pfunction = (int)(padr & 0xffff);
- lab->bus = (int)bus_num;
- lab->scanned = 0;
- lab->type = BRIDGE_TYPE_P2P;
-
- pciehprm_acpi_register_a_bridge (&acpi_bridges_head, pab, lab);
- } else
- dbg("acpi_pciehprm: found P2P bridge(%x) for sun(%08x)\n", (u32)bus_num, (u32)sun);
+ acpi_status status;
+ /*
+ * Per PCI firmware specification, we should run the ACPI _OSC
+ * method to get control of hotplug hardware before using it
+ */
+ /* Fixme: run _OSC for a specific host bridge, not all of them */
+ status = pci_osc_control_set(OSC_PCI_EXPRESS_NATIVE_HP_CONTROL);
+
+ /* Fixme: fail native hotplug if _OSC does not exist for root ports */
+ if (status == AE_NOT_FOUND) {
+ /*
+ * Some older BIOS's don't support _OSC but support
+ * OSHP to do the same thing
+ */
+ acpi_handle handle = DEVICE_ACPI_HANDLE(&(dev->dev));
+ if (handle)
+ status = acpi_run_oshp(handle);
}
-
- acpi_add_slot_to_php_slots(lab, (int)bus_num, handle, (u32)adr, (u32)sun);
-
- return (status);
-}
-
-static int pciehprm_acpi_build_php_slots(
- struct acpi_bridge *ab,
- u32 depth
- )
-{
- acpi_status status;
- u8 *path_name = acpi_path_name(ab->handle);
-
- /* Walk down this pci bridge to get _SUNs if any behind P2P */
- status = acpi_walk_namespace ( ACPI_TYPE_DEVICE,
- ab->handle,
- depth,
- pciehprm_acpi_build_php_slots_callback,
- ab,
- NULL );
if (ACPI_FAILURE(status)) {
- dbg("acpi_pciehprm:%s walk for _SUN on pci bridge seg:bus(%x:%x) fail=0x%x\n", path_name, ab->seg, ab->bus, status);
+ err("Cannot get control of hotplug hardware\n");
return -1;
}
+ dbg("Sucess getting control of hotplug hardware\n");
return 0;
}
-static void build_a_bridge(
- struct acpi_bridge *pab,
- struct acpi_bridge *ab
- )
-{
- u8 *path_name = acpi_path_name(ab->handle);
-
- pciehprm_acpi_register_a_bridge (&acpi_bridges_head, pab, ab);
-
- switch (ab->type) {
- case BRIDGE_TYPE_HOST:
- dbg("acpi_pciehprm: Registered PCI HOST Bridge(%02x) on s:b:d:f(%02x:%02x:%02x:%02x) [%s]\n",
- ab->bus, ab->seg, ab->pbus, ab->pdevice, ab->pfunction, path_name);
- break;
- case BRIDGE_TYPE_P2P:
- dbg("acpi_pciehprm: Registered PCI P2P Bridge(%02x-%02x) on s:b:d:f(%02x:%02x:%02x:%02x) [%s]\n",
- ab->pbus, ab->bus, ab->seg, ab->pbus, ab->pdevice, ab->pfunction, path_name);
- break;
- };
-
- /* build any immediate PHP slots under this pci bridge */
- pciehprm_acpi_build_php_slots(ab, 1);
-}
-
-static struct acpi_bridge * add_p2p_bridge(
- acpi_handle handle,
- struct acpi_bridge *pab, /* parent */
- ulong adr
- )
-{
- struct acpi_bridge *ab;
- struct pci_dev *pdev;
- ulong devnum, funcnum;
- u8 *path_name = acpi_path_name(handle);
-
- ab = (struct acpi_bridge *) kmalloc (sizeof(struct acpi_bridge), GFP_KERNEL);
- if (!ab) {
- err("acpi_pciehprm: alloc for ab fail\n");
- return NULL;
- }
- memset(ab, 0, sizeof(struct acpi_bridge));
-
- devnum = (adr >> 16) & 0xffff;
- funcnum = adr & 0xffff;
-
- pdev = pci_find_slot(pab->bus, PCI_DEVFN(devnum, funcnum));
- if (!pdev || !pdev->subordinate) {
- err("acpi_pciehprm:%s is not a P2P Bridge\n", path_name);
- kfree(ab);
- return NULL;
- }
-
- ab->handle = handle;
- ab->seg = pab->seg;
- ab->pbus = pab->bus; /* or pdev->bus->number */
- ab->pdevice = devnum; /* or PCI_SLOT(pdev->devfn) */
- ab->pfunction = funcnum; /* or PCI_FUNC(pdev->devfn) */
- ab->bus = pdev->subordinate->number;
- ab->scanned = 0;
- ab->type = BRIDGE_TYPE_P2P;
-
- dbg("acpi_pciehprm: P2P(%x-%x) on pci=b:d:f(%x:%x:%x) acpi=b:d:f(%x:%x:%x) [%s]\n",
- pab->bus, ab->bus, pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
- pab->bus, (u32)devnum, (u32)funcnum, path_name);
-
- build_a_bridge(pab, ab);
-
- return ab;
-}
-
-static acpi_status scan_p2p_bridge(
- acpi_handle handle,
- u32 Level,
- void *context,
- void **retval
- )
-{
- struct acpi_bridge *pab = (struct acpi_bridge *)context;
- struct acpi_bridge *ab;
- acpi_status status;
- ulong adr = 0;
- u8 *path_name = acpi_path_name(handle);
- ulong devnum, funcnum;
- struct pci_dev *pdev;
-
- /* get device, function */
- status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &adr);
- if (ACPI_FAILURE(status)) {
- if (status != AE_NOT_FOUND)
- err("acpi_pciehprm:%s _ADR fail=0x%x\n", path_name, status);
- return AE_OK;
- }
-
- devnum = (adr >> 16) & 0xffff;
- funcnum = adr & 0xffff;
-
- pdev = pci_find_slot(pab->bus, PCI_DEVFN(devnum, funcnum));
- if (!pdev)
- return AE_OK;
- if (!pdev->subordinate)
- return AE_OK;
-
- ab = add_p2p_bridge(handle, pab, adr);
- if (ab) {
- status = acpi_walk_namespace ( ACPI_TYPE_DEVICE,
- handle,
- (u32)1,
- scan_p2p_bridge,
- ab,
- NULL);
- if (ACPI_FAILURE(status))
- dbg("acpi_pciehprm:%s find_p2p fail=0x%x\n", path_name, status);
- }
-
- return AE_OK;
-}
-
-static struct acpi_bridge * add_host_bridge(
- acpi_handle handle,
- ulong segnum,
- ulong busnum
- )
-{
- ulong adr = 0;
- acpi_status status;
- struct acpi_bridge *ab;
- u8 *path_name = acpi_path_name(handle);
-
- /* get device, function: host br adr is always 0000 though. */
- status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &adr);
- if (ACPI_FAILURE(status)) {
- err("acpi_pciehprm:%s _ADR fail=0x%x\n", path_name, status);
- return NULL;
- }
- dbg("acpi_pciehprm: ROOT PCI seg(0x%x)bus(0x%x)dev(0x%x)func(0x%x) [%s]\n", (u32)segnum,
- (u32)busnum, (u32)(adr >> 16) & 0xffff, (u32)adr & 0xffff, path_name);
-
- ab = (struct acpi_bridge *) kmalloc (sizeof(struct acpi_bridge), GFP_KERNEL);
- if (!ab) {
- err("acpi_pciehprm: alloc for ab fail\n");
- return NULL;
- }
- memset(ab, 0, sizeof(struct acpi_bridge));
-
- ab->handle = handle;
- ab->seg = (int)segnum;
- ab->bus = ab->pbus = (int)busnum;
- ab->pdevice = (int)(adr >> 16) & 0xffff;
- ab->pfunction = (int)(adr & 0xffff);
- ab->scanned = 0;
- ab->type = BRIDGE_TYPE_HOST;
-
- status = pci_osc_control_set (OSC_PCI_EXPRESS_NATIVE_HP_CONTROL);
- if (ACPI_FAILURE(status)) {
- err("%s: status %x\n", __FUNCTION__, status);
- osc_run_status = (status == AE_NOT_FOUND) ? OSC_NOT_EXIST : OSC_RUN_FAILED;
- } else {
- osc_run_status = NC_RUN_SUCCESS;
- }
- dbg("%s: osc_run_status %x\n", __FUNCTION__, osc_run_status);
-
- build_a_bridge(ab, ab);
-
- return ab;
-}
-
-static acpi_status acpi_scan_from_root_pci_callback (
- acpi_handle handle,
- u32 Level,
- void *context,
- void **retval
- )
-{
- ulong segnum = 0;
- ulong busnum = 0;
- acpi_status status;
- struct acpi_bridge *ab;
- u8 *path_name = acpi_path_name(handle);
-
- /* get bus number of this pci root bridge */
- status = acpi_evaluate_integer(handle, METHOD_NAME__SEG, NULL, &segnum);
- if (ACPI_FAILURE(status)) {
- if (status != AE_NOT_FOUND) {
- err("acpi_pciehprm:%s evaluate _SEG fail=0x%x\n", path_name, status);
- return status;
- }
- segnum = 0;
- }
-
- /* get bus number of this pci root bridge */
- status = acpi_evaluate_integer(handle, METHOD_NAME__BBN, NULL, &busnum);
- if (ACPI_FAILURE(status)) {
- err("acpi_pciehprm:%s evaluate _BBN fail=0x%x\n", path_name, status);
- return (status);
- }
-
- ab = add_host_bridge(handle, segnum, busnum);
- if (ab) {
- status = acpi_walk_namespace ( ACPI_TYPE_DEVICE,
- handle,
- 1,
- scan_p2p_bridge,
- ab,
- NULL);
- if (ACPI_FAILURE(status))
- dbg("acpi_pciehprm:%s find_p2p fail=0x%x\n", path_name, status);
- }
-
- return AE_OK;
-}
-
-static int pciehprm_acpi_scan_pci (void)
+void get_hp_params_from_firmware(struct pci_dev *dev,
+ struct hotplug_params *hpp)
{
- acpi_status status;
+ acpi_status status = AE_NOT_FOUND;
+ struct pci_dev *pdev = dev;
/*
- * TBD: traverse LDM device tree with the help of
- * unified ACPI augmented for php device population.
+ * _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
*/
- status = acpi_get_devices ( PCI_ROOT_HID_STRING,
- acpi_scan_from_root_pci_callback,
- NULL,
- NULL );
- if (ACPI_FAILURE(status)) {
- err("acpi_pciehprm:get_device PCI ROOT HID fail=0x%x\n", status);
- return -1;
- }
-
- return 0;
-}
-
-int pciehprm_init(enum php_ctlr_type ctlr_type)
-{
- int rc;
-
- if (ctlr_type != PCI)
- return -ENODEV;
-
- dbg("pciehprm ACPI init <enter>\n");
- acpi_bridges_head = NULL;
-
- /* construct PCI bus:device tree of acpi_handles */
- rc = pciehprm_acpi_scan_pci();
- if (rc)
- return rc;
-
- if ((oshp_run_status != NC_RUN_SUCCESS) && (osc_run_status != NC_RUN_SUCCESS)) {
- err("Fails to gain control of native hot-plug\n");
- rc = -ENODEV;
- }
-
- dbg("pciehprm ACPI init %s\n", (rc)?"fail":"success");
- return rc;
-}
-
-static void free_a_slot(struct acpi_php_slot *aps)
-{
- dbg(" free a php func of slot(0x%02x) on PCI b:d:f=0x%02x:%02x:%02x\n", aps->sun, aps->bus, aps->dev, aps->fun);
-
- kfree(aps);
-}
-
-static void free_a_bridge( struct acpi_bridge *ab)
-{
- struct acpi_php_slot *aps, *next;
-
- switch (ab->type) {
- case BRIDGE_TYPE_HOST:
- dbg("Free ACPI PCI HOST Bridge(%x) [%s] on s:b:d:f(%x:%x:%x:%x)\n",
- ab->bus, acpi_path_name(ab->handle), ab->seg, ab->pbus, ab->pdevice, ab->pfunction);
- break;
- case BRIDGE_TYPE_P2P:
- dbg("Free ACPI PCI P2P Bridge(%x-%x) [%s] on s:b:d:f(%x:%x:%x:%x)\n",
- ab->pbus, ab->bus, acpi_path_name(ab->handle), ab->seg, ab->pbus, ab->pdevice, ab->pfunction);
- break;
- };
-
- /* free slots first */
- for (aps = ab->slots; aps; aps = next) {
- next = aps->next;
- free_a_slot(aps);
- }
-
- kfree(ab);
-}
-
-static void pciehprm_free_bridges ( struct acpi_bridge *ab)
-{
- if (!ab)
- return;
-
- if (ab->child)
- pciehprm_free_bridges (ab->child);
-
- if (ab->next)
- pciehprm_free_bridges (ab->next);
-
- free_a_bridge(ab);
-}
-
-void pciehprm_cleanup(void)
-{
- pciehprm_free_bridges (acpi_bridges_head);
-}
-
-static int get_number_of_slots (
- struct acpi_bridge *ab,
- int selfonly
- )
-{
- struct acpi_php_slot *aps;
- int prev_slot = -1;
- int slot_num = 0;
-
- for ( aps = ab->slots; aps; aps = aps->next)
- if (aps->dev != prev_slot) {
- prev_slot = aps->dev;
- slot_num++;
- }
-
- if (ab->child)
- slot_num += get_number_of_slots (ab->child, 0);
-
- if (selfonly)
- return slot_num;
-
- if (ab->next)
- slot_num += get_number_of_slots (ab->next, 0);
-
- return slot_num;
-}
-
-static struct acpi_php_slot * get_acpi_slot (
- struct acpi_bridge *ab,
- u32 sun
- )
-{
- struct acpi_php_slot *aps = NULL;
-
- for ( aps = ab->slots; aps; aps = aps->next)
- if (aps->sun == sun)
- return aps;
-
- if (!aps && ab->child) {
- aps = (struct acpi_php_slot *)get_acpi_slot (ab->child, sun);
- if (aps)
- return aps;
- }
-
- if (!aps && ab->next) {
- aps = (struct acpi_php_slot *)get_acpi_slot (ab->next, sun);
- if (aps)
- return aps;
- }
-
- return aps;
-
-}
-
-#if 0
-void * pciehprm_get_slot(struct slot *slot)
-{
- struct acpi_bridge *ab = acpi_bridges_head;
- struct acpi_php_slot *aps = get_acpi_slot (ab, slot->number);
-
- aps->slot = slot;
-
- dbg("Got acpi slot sun(%x): s:b:d:f(%x:%x:%x:%x)\n", aps->sun, aps->seg, aps->bus, aps->dev, aps->fun);
-
- return (void *)aps;
-}
-#endif
-
-int pciehprm_set_hpp(
- struct controller *ctrl,
- struct pci_func *func,
- u8 card_type
- )
-{
- struct acpi_bridge *ab;
- struct pci_bus lpci_bus, *pci_bus;
- int rc = 0;
- unsigned int devfn;
- u8 cls= 0x08; /* default cache line size */
- u8 lt = 0x40; /* default latency timer */
- u8 ep = 0;
- u8 es = 0;
-
- memcpy(&lpci_bus, ctrl->pci_bus, sizeof(lpci_bus));
- pci_bus = &lpci_bus;
- pci_bus->number = func->bus;
- devfn = PCI_DEVFN(func->device, func->function);
-
- ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->bus);
-
- if (ab) {
- if (ab->_hpp) {
- lt = (u8)ab->_hpp->latency_timer;
- cls = (u8)ab->_hpp->cache_line_size;
- ep = (u8)ab->_hpp->enable_perr;
- es = (u8)ab->_hpp->enable_serr;
- } else
- dbg("_hpp: no _hpp for B/D/F=%#x/%#x/%#x. use default value\n", func->bus, func->device, func->function);
- } else
- dbg("_hpp: no acpi bridge for B/D/F = %#x/%#x/%#x. use default value\n", func->bus, func->device, func->function);
-
-
- if (card_type == PCI_HEADER_TYPE_BRIDGE) {
- /* set subordinate Latency Timer */
- rc |= pci_bus_write_config_byte(pci_bus, devfn, PCI_SEC_LATENCY_TIMER, lt);
+ 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;
}
-
- /* set base Latency Timer */
- rc |= pci_bus_write_config_byte(pci_bus, devfn, PCI_LATENCY_TIMER, lt);
- dbg(" set latency timer =0x%02x: %x\n", lt, rc);
-
- rc |= pci_bus_write_config_byte(pci_bus, devfn, PCI_CACHE_LINE_SIZE, cls);
- dbg(" set cache_line_size=0x%02x: %x\n", cls, rc);
-
- return rc;
}
-void pciehprm_enable_card(
- struct controller *ctrl,
- struct pci_func *func,
- u8 card_type)
-{
- u16 command, cmd, bcommand, bcmd;
- struct pci_bus lpci_bus, *pci_bus;
- struct acpi_bridge *ab;
- unsigned int devfn;
- int rc;
-
- memcpy(&lpci_bus, ctrl->pci_bus, sizeof(lpci_bus));
- pci_bus = &lpci_bus;
- pci_bus->number = func->bus;
- devfn = PCI_DEVFN(func->device, func->function);
-
- rc = pci_bus_read_config_word(pci_bus, devfn, PCI_COMMAND, &cmd);
-
- if (card_type == PCI_HEADER_TYPE_BRIDGE) {
- rc = pci_bus_read_config_word(pci_bus, devfn, PCI_BRIDGE_CONTROL, &bcmd);
- }
-
- command = cmd | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE
- | PCI_COMMAND_IO | PCI_COMMAND_MEMORY;
- bcommand = bcmd | PCI_BRIDGE_CTL_NO_ISA;
-
- ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->bus);
- if (ab) {
- if (ab->_hpp) {
- if (ab->_hpp->enable_perr) {
- command |= PCI_COMMAND_PARITY;
- bcommand |= PCI_BRIDGE_CTL_PARITY;
- } else {
- command &= ~PCI_COMMAND_PARITY;
- bcommand &= ~PCI_BRIDGE_CTL_PARITY;
- }
- if (ab->_hpp->enable_serr) {
- command |= PCI_COMMAND_SERR;
- bcommand |= PCI_BRIDGE_CTL_SERR;
- } else {
- command &= ~PCI_COMMAND_SERR;
- bcommand &= ~PCI_BRIDGE_CTL_SERR;
- }
- } else
- dbg("no _hpp for B/D/F = %#x/%#x/%#x.\n", func->bus, func->device, func->function);
- } else
- dbg("no acpi bridge for B/D/F = %#x/%#x/%#x.\n", func->bus, func->device, func->function);
-
- if (command != cmd) {
- rc = pci_bus_write_config_word(pci_bus, devfn, PCI_COMMAND, command);
- }
- if ((card_type == PCI_HEADER_TYPE_BRIDGE) && (bcommand != bcmd)) {
- rc = pci_bus_write_config_word(pci_bus, devfn, PCI_BRIDGE_CONTROL, bcommand);
- }
-}
diff --git a/drivers/pci/hotplug/pciehprm_nonacpi.c b/drivers/pci/hotplug/pciehprm_nonacpi.c
index ed68c3dd0f08..32371cd19e34 100644
--- a/drivers/pci/hotplug/pciehprm_nonacpi.c
+++ b/drivers/pci/hotplug/pciehprm_nonacpi.c
@@ -37,15 +37,9 @@
#include <linux/slab.h>
#include <asm/uaccess.h>
#include "pciehp.h"
-#include "pciehprm.h"
#include "pciehprm_nonacpi.h"
-void pciehprm_cleanup(void)
-{
- return;
-}
-
int pciehprm_get_physical_slot_number(struct controller *ctrl, u32 *sun, u8 busnum, u8 devnum)
{
@@ -53,106 +47,13 @@ int pciehprm_get_physical_slot_number(struct controller *ctrl, u32 *sun, u8 busn
return 0;
}
-int pciehprm_set_hpp(
- struct controller *ctrl,
- struct pci_func *func,
- u8 card_type)
-{
- u32 rc;
- u8 temp_byte;
- struct pci_bus lpci_bus, *pci_bus;
- unsigned int devfn;
- memcpy(&lpci_bus, ctrl->pci_bus, sizeof(lpci_bus));
- pci_bus = &lpci_bus;
- pci_bus->number = func->bus;
- devfn = PCI_DEVFN(func->device, func->function);
-
- temp_byte = 0x40; /* hard coded value for LT */
- if (card_type == PCI_HEADER_TYPE_BRIDGE) {
- /* set subordinate Latency Timer */
- rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SEC_LATENCY_TIMER, temp_byte);
-
- if (rc) {
- dbg("%s: set secondary LT error. b:d:f(%02x:%02x:%02x)\n", __FUNCTION__,
- func->bus, func->device, func->function);
- return rc;
- }
- }
-
- /* set base Latency Timer */
- rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_LATENCY_TIMER, temp_byte);
-
- if (rc) {
- dbg("%s: set LT error. b:d:f(%02x:%02x:%02x)\n", __FUNCTION__, func->bus, func->device, func->function);
- return rc;
- }
-
- /* set Cache Line size */
- temp_byte = 0x08; /* hard coded value for CLS */
-
- rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_CACHE_LINE_SIZE, temp_byte);
-
- if (rc) {
- dbg("%s: set CLS error. b:d:f(%02x:%02x:%02x)\n", __FUNCTION__, func->bus, func->device, func->function);
- }
-
- /* set enable_perr */
- /* set enable_serr */
-
- return rc;
-}
-
-void pciehprm_enable_card(
- struct controller *ctrl,
- struct pci_func *func,
- u8 card_type)
+void get_hp_params_from_firmware(struct pci_dev *dev,
+ struct hotplug_params *hpp)
{
- u16 command, bcommand;
- struct pci_bus lpci_bus, *pci_bus;
- unsigned int devfn;
- int rc;
-
- memcpy(&lpci_bus, ctrl->pci_bus, sizeof(lpci_bus));
- pci_bus = &lpci_bus;
- pci_bus->number = func->bus;
- devfn = PCI_DEVFN(func->device, func->function);
-
- rc = pci_bus_read_config_word(pci_bus, devfn, PCI_COMMAND, &command);
-
- command |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR
- | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE
- | PCI_COMMAND_IO | PCI_COMMAND_MEMORY;
-
- rc = pci_bus_write_config_word(pci_bus, devfn, PCI_COMMAND, command);
-
- if (card_type == PCI_HEADER_TYPE_BRIDGE) {
-
- rc = pci_bus_read_config_word(pci_bus, devfn, PCI_BRIDGE_CONTROL, &bcommand);
-
- bcommand |= PCI_BRIDGE_CTL_PARITY | PCI_BRIDGE_CTL_SERR
- | PCI_BRIDGE_CTL_NO_ISA;
-
- rc = pci_bus_write_config_word(pci_bus, devfn, PCI_BRIDGE_CONTROL, bcommand);
- }
+ return;
}
-static int legacy_pciehprm_init_pci(void)
+int get_hp_hw_control_from_firmware(struct pci_dev *dev)
{
return 0;
}
-
-int pciehprm_init(enum php_ctlr_type ctrl_type)
-{
- int retval;
-
- switch (ctrl_type) {
- case PCI:
- retval = legacy_pciehprm_init_pci();
- break;
- default:
- retval = -ENODEV;
- break;
- }
-
- return retval;
-}
diff --git a/drivers/pci/hotplug/pciehprm_nonacpi.h b/drivers/pci/hotplug/pciehprm_nonacpi.h
deleted file mode 100644
index b10603b0e958..000000000000
--- a/drivers/pci/hotplug/pciehprm_nonacpi.h
+++ /dev/null
@@ -1,56 +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 <greg@kroah.com>, <kristen.c.accardi@intel.com>
- *
- */
-
-#ifndef _PCIEHPRM_NONACPI_H_
-#define _PCIEHPRM_NONACPI_H_
-
-struct irq_info {
- u8 bus, devfn; /* bus, device and function */
- struct {
- u8 link; /* IRQ line ID, chipset dependent, 0=not routed */
- u16 bitmap; /* Available IRQs */
- } __attribute__ ((packed)) irq[4];
- u8 slot; /* slot number, 0=onboard */
- u8 rfu;
-} __attribute__ ((packed));
-
-struct irq_routing_table {
- u32 signature; /* PIRQ_SIGNATURE should be here */
- u16 version; /* PIRQ_VERSION */
- u16 size; /* Table size in bytes */
- u8 rtr_bus, rtr_devfn; /* Where the interrupt router lies */
- u16 exclusive_irqs; /* IRQs devoted exclusively to PCI usage */
- u16 rtr_vendor, rtr_device; /* Vendor and device ID of interrupt router */
- u32 miniport_data; /* Crap */
- u8 rfu[11];
- u8 checksum; /* Modulo 256 checksum must give zero */
- struct irq_info slots[0];
-} __attribute__ ((packed));
-
-#endif /* _PCIEHPRM_NONACPI_H_ */