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1737 lines
44 KiB
1737 lines
44 KiB
/*
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* PCIEHPRM ACPI: PHP Resource Manager for ACPI platform
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*
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* Copyright (C) 2003-2004 Intel Corporation
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Send feedback to <dely.l.sy@intel.com>
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*
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/acpi.h>
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#include <linux/efi.h>
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#include <linux/pci-acpi.h>
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#include <asm/uaccess.h>
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#include <asm/system.h>
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#ifdef CONFIG_IA64
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#include <asm/iosapic.h>
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#endif
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#include <acpi/acpi.h>
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#include <acpi/acpi_bus.h>
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#include <acpi/actypes.h>
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#include "pciehp.h"
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#include "pciehprm.h"
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#define PCI_MAX_BUS 0x100
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#define ACPI_STA_DEVICE_PRESENT 0x01
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#define METHOD_NAME__SUN "_SUN"
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#define METHOD_NAME__HPP "_HPP"
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#define METHOD_NAME_OSHP "OSHP"
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/* Status code for running acpi method to gain native control */
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#define NC_NOT_RUN 0
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#define OSC_NOT_EXIST 1
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#define OSC_RUN_FAILED 2
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#define OSHP_NOT_EXIST 3
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#define OSHP_RUN_FAILED 4
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#define NC_RUN_SUCCESS 5
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#define PHP_RES_BUS 0xA0
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#define PHP_RES_IO 0xA1
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#define PHP_RES_MEM 0xA2
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#define PHP_RES_PMEM 0xA3
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#define BRIDGE_TYPE_P2P 0x00
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#define BRIDGE_TYPE_HOST 0x01
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/* this should go to drivers/acpi/include/ */
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struct acpi__hpp {
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u8 cache_line_size;
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u8 latency_timer;
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u8 enable_serr;
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u8 enable_perr;
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};
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struct acpi_php_slot {
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struct acpi_php_slot *next;
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struct acpi_bridge *bridge;
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acpi_handle handle;
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int seg;
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int bus;
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int dev;
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int fun;
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u32 sun;
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struct pci_resource *mem_head;
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struct pci_resource *p_mem_head;
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struct pci_resource *io_head;
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struct pci_resource *bus_head;
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void *slot_ops; /* _STA, _EJx, etc */
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struct slot *slot;
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}; /* per func */
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struct acpi_bridge {
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struct acpi_bridge *parent;
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struct acpi_bridge *next;
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struct acpi_bridge *child;
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acpi_handle handle;
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int seg;
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int pbus; /* pdev->bus->number */
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int pdevice; /* PCI_SLOT(pdev->devfn) */
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int pfunction; /* PCI_DEVFN(pdev->devfn) */
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int bus; /* pdev->subordinate->number */
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struct acpi__hpp *_hpp;
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struct acpi_php_slot *slots;
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struct pci_resource *tmem_head; /* total from crs */
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struct pci_resource *tp_mem_head; /* total from crs */
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struct pci_resource *tio_head; /* total from crs */
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struct pci_resource *tbus_head; /* total from crs */
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struct pci_resource *mem_head; /* available */
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struct pci_resource *p_mem_head; /* available */
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struct pci_resource *io_head; /* available */
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struct pci_resource *bus_head; /* available */
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int scanned;
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int type;
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};
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static struct acpi_bridge *acpi_bridges_head;
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static u8 * acpi_path_name( acpi_handle handle)
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{
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acpi_status status;
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static u8 path_name[ACPI_PATHNAME_MAX];
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struct acpi_buffer ret_buf = { ACPI_PATHNAME_MAX, path_name };
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memset(path_name, 0, sizeof (path_name));
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status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &ret_buf);
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if (ACPI_FAILURE(status))
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return NULL;
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else
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return path_name;
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}
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static void acpi_get__hpp ( struct acpi_bridge *ab);
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static int acpi_run_oshp ( struct acpi_bridge *ab);
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static int osc_run_status = NC_NOT_RUN;
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static int oshp_run_status = NC_NOT_RUN;
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static int acpi_add_slot_to_php_slots(
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struct acpi_bridge *ab,
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int bus_num,
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acpi_handle handle,
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u32 adr,
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u32 sun
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)
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{
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struct acpi_php_slot *aps;
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static long samesun = -1;
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aps = (struct acpi_php_slot *) kmalloc (sizeof(struct acpi_php_slot), GFP_KERNEL);
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if (!aps) {
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err ("acpi_pciehprm: alloc for aps fail\n");
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return -1;
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}
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memset(aps, 0, sizeof(struct acpi_php_slot));
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aps->handle = handle;
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aps->bus = bus_num;
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aps->dev = (adr >> 16) & 0xffff;
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aps->fun = adr & 0xffff;
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aps->sun = sun;
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aps->next = ab->slots; /* cling to the bridge */
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aps->bridge = ab;
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ab->slots = aps;
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ab->scanned += 1;
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if (!ab->_hpp)
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acpi_get__hpp(ab);
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if (osc_run_status == OSC_NOT_EXIST)
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oshp_run_status = acpi_run_oshp(ab);
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if (sun != samesun) {
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info("acpi_pciehprm: Slot sun(%x) at s:b:d:f=0x%02x:%02x:%02x:%02x\n",
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aps->sun, ab->seg, aps->bus, aps->dev, aps->fun);
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samesun = sun;
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}
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return 0;
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}
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static void acpi_get__hpp ( struct acpi_bridge *ab)
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{
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acpi_status status;
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u8 nui[4];
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struct acpi_buffer ret_buf = { 0, NULL};
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union acpi_object *ext_obj, *package;
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u8 *path_name = acpi_path_name(ab->handle);
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int i, len = 0;
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/* get _hpp */
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status = acpi_evaluate_object(ab->handle, METHOD_NAME__HPP, NULL, &ret_buf);
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switch (status) {
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case AE_BUFFER_OVERFLOW:
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ret_buf.pointer = kmalloc (ret_buf.length, GFP_KERNEL);
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if (!ret_buf.pointer) {
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err ("acpi_pciehprm:%s alloc for _HPP fail\n", path_name);
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return;
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}
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status = acpi_evaluate_object(ab->handle, METHOD_NAME__HPP, NULL, &ret_buf);
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if (ACPI_SUCCESS(status))
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break;
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default:
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if (ACPI_FAILURE(status)) {
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err("acpi_pciehprm:%s _HPP fail=0x%x\n", path_name, status);
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return;
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}
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}
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ext_obj = (union acpi_object *) ret_buf.pointer;
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if (ext_obj->type != ACPI_TYPE_PACKAGE) {
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err ("acpi_pciehprm:%s _HPP obj not a package\n", path_name);
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goto free_and_return;
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}
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len = ext_obj->package.count;
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package = (union acpi_object *) ret_buf.pointer;
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for ( i = 0; (i < len) || (i < 4); i++) {
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ext_obj = (union acpi_object *) &package->package.elements[i];
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switch (ext_obj->type) {
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case ACPI_TYPE_INTEGER:
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nui[i] = (u8)ext_obj->integer.value;
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break;
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default:
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err ("acpi_pciehprm:%s _HPP obj type incorrect\n", path_name);
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goto free_and_return;
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}
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}
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ab->_hpp = kmalloc (sizeof (struct acpi__hpp), GFP_KERNEL);
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if (!ab->_hpp) {
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err ("acpi_pciehprm:%s alloc for _HPP failed\n", path_name);
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goto free_and_return;
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}
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memset(ab->_hpp, 0, sizeof(struct acpi__hpp));
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ab->_hpp->cache_line_size = nui[0];
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ab->_hpp->latency_timer = nui[1];
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ab->_hpp->enable_serr = nui[2];
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ab->_hpp->enable_perr = nui[3];
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dbg(" _HPP: cache_line_size=0x%x\n", ab->_hpp->cache_line_size);
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dbg(" _HPP: latency timer =0x%x\n", ab->_hpp->latency_timer);
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dbg(" _HPP: enable SERR =0x%x\n", ab->_hpp->enable_serr);
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dbg(" _HPP: enable PERR =0x%x\n", ab->_hpp->enable_perr);
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free_and_return:
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kfree(ret_buf.pointer);
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}
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static int acpi_run_oshp ( struct acpi_bridge *ab)
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{
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acpi_status status;
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u8 *path_name = acpi_path_name(ab->handle);
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/* run OSHP */
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status = acpi_evaluate_object(ab->handle, METHOD_NAME_OSHP, NULL, NULL);
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if (ACPI_FAILURE(status)) {
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err("acpi_pciehprm:%s OSHP fails=0x%x\n", path_name, status);
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oshp_run_status = (status == AE_NOT_FOUND) ? OSHP_NOT_EXIST : OSHP_RUN_FAILED;
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} else {
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oshp_run_status = NC_RUN_SUCCESS;
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dbg("acpi_pciehprm:%s OSHP passes =0x%x\n", path_name, status);
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dbg("acpi_pciehprm:%s oshp_run_status =0x%x\n", path_name, oshp_run_status);
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}
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return oshp_run_status;
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}
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static acpi_status acpi_evaluate_crs(
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acpi_handle handle,
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struct acpi_resource **retbuf
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)
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{
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acpi_status status;
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struct acpi_buffer crsbuf;
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u8 *path_name = acpi_path_name(handle);
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crsbuf.length = 0;
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crsbuf.pointer = NULL;
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status = acpi_get_current_resources (handle, &crsbuf);
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switch (status) {
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case AE_BUFFER_OVERFLOW:
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break; /* found */
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case AE_NOT_FOUND:
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dbg("acpi_pciehprm:%s _CRS not found\n", path_name);
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return status;
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default:
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err ("acpi_pciehprm:%s _CRS fail=0x%x\n", path_name, status);
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return status;
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}
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crsbuf.pointer = kmalloc (crsbuf.length, GFP_KERNEL);
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if (!crsbuf.pointer) {
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err ("acpi_pciehprm: alloc %ld bytes for %s _CRS fail\n", (ulong)crsbuf.length, path_name);
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return AE_NO_MEMORY;
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}
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status = acpi_get_current_resources (handle, &crsbuf);
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if (ACPI_FAILURE(status)) {
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err("acpi_pciehprm: %s _CRS fail=0x%x.\n", path_name, status);
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kfree(crsbuf.pointer);
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return status;
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}
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*retbuf = crsbuf.pointer;
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return status;
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}
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static void free_pci_resource ( struct pci_resource *aprh)
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{
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struct pci_resource *res, *next;
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for (res = aprh; res; res = next) {
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next = res->next;
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kfree(res);
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}
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}
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static void print_pci_resource ( struct pci_resource *aprh)
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{
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struct pci_resource *res;
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for (res = aprh; res; res = res->next)
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dbg(" base= 0x%x length= 0x%x\n", res->base, res->length);
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}
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static void print_slot_resources( struct acpi_php_slot *aps)
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{
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if (aps->bus_head) {
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dbg(" BUS Resources:\n");
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print_pci_resource (aps->bus_head);
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}
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if (aps->io_head) {
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dbg(" IO Resources:\n");
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print_pci_resource (aps->io_head);
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}
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if (aps->mem_head) {
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dbg(" MEM Resources:\n");
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print_pci_resource (aps->mem_head);
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}
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if (aps->p_mem_head) {
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dbg(" PMEM Resources:\n");
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print_pci_resource (aps->p_mem_head);
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}
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}
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static void print_pci_resources( struct acpi_bridge *ab)
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{
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if (ab->tbus_head) {
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dbg(" Total BUS Resources:\n");
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print_pci_resource (ab->tbus_head);
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}
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if (ab->bus_head) {
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dbg(" BUS Resources:\n");
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print_pci_resource (ab->bus_head);
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}
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if (ab->tio_head) {
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dbg(" Total IO Resources:\n");
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print_pci_resource (ab->tio_head);
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}
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if (ab->io_head) {
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dbg(" IO Resources:\n");
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print_pci_resource (ab->io_head);
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}
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if (ab->tmem_head) {
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dbg(" Total MEM Resources:\n");
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print_pci_resource (ab->tmem_head);
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}
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if (ab->mem_head) {
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dbg(" MEM Resources:\n");
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print_pci_resource (ab->mem_head);
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}
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|
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if (ab->tp_mem_head) {
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dbg(" Total PMEM Resources:\n");
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print_pci_resource (ab->tp_mem_head);
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}
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if (ab->p_mem_head) {
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dbg(" PMEM Resources:\n");
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print_pci_resource (ab->p_mem_head);
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}
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if (ab->_hpp) {
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dbg(" _HPP: cache_line_size=0x%x\n", ab->_hpp->cache_line_size);
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dbg(" _HPP: latency timer =0x%x\n", ab->_hpp->latency_timer);
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dbg(" _HPP: enable SERR =0x%x\n", ab->_hpp->enable_serr);
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dbg(" _HPP: enable PERR =0x%x\n", ab->_hpp->enable_perr);
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}
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}
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|
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static int pciehprm_delete_resource(
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struct pci_resource **aprh,
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ulong base,
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ulong size)
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{
|
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struct pci_resource *res;
|
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struct pci_resource *prevnode;
|
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struct pci_resource *split_node;
|
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ulong tbase;
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|
|
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pciehp_resource_sort_and_combine(aprh);
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|
|
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for (res = *aprh; res; res = res->next) {
|
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if (res->base > base)
|
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continue;
|
|
|
|
if ((res->base + res->length) < (base + size))
|
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continue;
|
|
|
|
if (res->base < base) {
|
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tbase = base;
|
|
|
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if ((res->length - (tbase - res->base)) < size)
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continue;
|
|
|
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split_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
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if (!split_node)
|
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return -ENOMEM;
|
|
|
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split_node->base = res->base;
|
|
split_node->length = tbase - res->base;
|
|
res->base = tbase;
|
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res->length -= split_node->length;
|
|
|
|
split_node->next = res->next;
|
|
res->next = split_node;
|
|
}
|
|
|
|
if (res->length >= size) {
|
|
split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
|
if (!split_node)
|
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return -ENOMEM;
|
|
|
|
split_node->base = res->base + size;
|
|
split_node->length = res->length - size;
|
|
res->length = size;
|
|
|
|
split_node->next = res->next;
|
|
res->next = split_node;
|
|
}
|
|
|
|
if (*aprh == res) {
|
|
*aprh = res->next;
|
|
} else {
|
|
prevnode = *aprh;
|
|
while (prevnode->next != res)
|
|
prevnode = prevnode->next;
|
|
|
|
prevnode->next = res->next;
|
|
}
|
|
res->next = NULL;
|
|
kfree(res);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pciehprm_delete_resources(
|
|
struct pci_resource **aprh,
|
|
struct pci_resource *this
|
|
)
|
|
{
|
|
struct pci_resource *res;
|
|
|
|
for (res = this; res; res = res->next)
|
|
pciehprm_delete_resource(aprh, res->base, res->length);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pciehprm_add_resource(
|
|
struct pci_resource **aprh,
|
|
ulong base,
|
|
ulong size)
|
|
{
|
|
struct pci_resource *res;
|
|
|
|
for (res = *aprh; res; res = res->next) {
|
|
if ((res->base + res->length) == base) {
|
|
res->length += size;
|
|
size = 0L;
|
|
break;
|
|
}
|
|
if (res->next == *aprh)
|
|
break;
|
|
}
|
|
|
|
if (size) {
|
|
res = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
|
if (!res) {
|
|
err ("acpi_pciehprm: alloc for res fail\n");
|
|
return -ENOMEM;
|
|
}
|
|
memset(res, 0, sizeof (struct pci_resource));
|
|
|
|
res->base = base;
|
|
res->length = size;
|
|
res->next = *aprh;
|
|
*aprh = res;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pciehprm_add_resources(
|
|
struct pci_resource **aprh,
|
|
struct pci_resource *this
|
|
)
|
|
{
|
|
struct pci_resource *res;
|
|
int rc = 0;
|
|
|
|
for (res = this; res && !rc; res = res->next)
|
|
rc = pciehprm_add_resource(aprh, res->base, res->length);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void acpi_parse_io (
|
|
struct acpi_bridge *ab,
|
|
union acpi_resource_data *data
|
|
)
|
|
{
|
|
struct acpi_resource_io *dataio;
|
|
dataio = (struct acpi_resource_io *) data;
|
|
|
|
dbg("Io Resource\n");
|
|
dbg(" %d bit decode\n", ACPI_DECODE_16 == dataio->io_decode ? 16:10);
|
|
dbg(" Range minimum base: %08X\n", dataio->min_base_address);
|
|
dbg(" Range maximum base: %08X\n", dataio->max_base_address);
|
|
dbg(" Alignment: %08X\n", dataio->alignment);
|
|
dbg(" Range Length: %08X\n", dataio->range_length);
|
|
}
|
|
|
|
static void acpi_parse_fixed_io (
|
|
struct acpi_bridge *ab,
|
|
union acpi_resource_data *data
|
|
)
|
|
{
|
|
struct acpi_resource_fixed_io *datafio;
|
|
datafio = (struct acpi_resource_fixed_io *) data;
|
|
|
|
dbg("Fixed Io Resource\n");
|
|
dbg(" Range base address: %08X", datafio->base_address);
|
|
dbg(" Range length: %08X", datafio->range_length);
|
|
}
|
|
|
|
static void acpi_parse_address16_32 (
|
|
struct acpi_bridge *ab,
|
|
union acpi_resource_data *data,
|
|
acpi_resource_type id
|
|
)
|
|
{
|
|
/*
|
|
* acpi_resource_address16 == acpi_resource_address32
|
|
* acpi_resource_address16 *data16 = (acpi_resource_address16 *) data;
|
|
*/
|
|
struct acpi_resource_address32 *data32 = (struct acpi_resource_address32 *) data;
|
|
struct pci_resource **aprh, **tprh;
|
|
|
|
if (id == ACPI_RSTYPE_ADDRESS16)
|
|
dbg("acpi_pciehprm:16-Bit Address Space Resource\n");
|
|
else
|
|
dbg("acpi_pciehprm:32-Bit Address Space Resource\n");
|
|
|
|
switch (data32->resource_type) {
|
|
case ACPI_MEMORY_RANGE:
|
|
dbg(" Resource Type: Memory Range\n");
|
|
aprh = &ab->mem_head;
|
|
tprh = &ab->tmem_head;
|
|
|
|
switch (data32->attribute.memory.cache_attribute) {
|
|
case ACPI_NON_CACHEABLE_MEMORY:
|
|
dbg(" Type Specific: Noncacheable memory\n");
|
|
break;
|
|
case ACPI_CACHABLE_MEMORY:
|
|
dbg(" Type Specific: Cacheable memory\n");
|
|
break;
|
|
case ACPI_WRITE_COMBINING_MEMORY:
|
|
dbg(" Type Specific: Write-combining memory\n");
|
|
break;
|
|
case ACPI_PREFETCHABLE_MEMORY:
|
|
aprh = &ab->p_mem_head;
|
|
dbg(" Type Specific: Prefetchable memory\n");
|
|
break;
|
|
default:
|
|
dbg(" Type Specific: Invalid cache attribute\n");
|
|
break;
|
|
}
|
|
|
|
dbg(" Type Specific: Read%s\n", ACPI_READ_WRITE_MEMORY == data32->attribute.memory.read_write_attribute ? "/Write":" Only");
|
|
break;
|
|
|
|
case ACPI_IO_RANGE:
|
|
dbg(" Resource Type: I/O Range\n");
|
|
aprh = &ab->io_head;
|
|
tprh = &ab->tio_head;
|
|
|
|
switch (data32->attribute.io.range_attribute) {
|
|
case ACPI_NON_ISA_ONLY_RANGES:
|
|
dbg(" Type Specific: Non-ISA Io Addresses\n");
|
|
break;
|
|
case ACPI_ISA_ONLY_RANGES:
|
|
dbg(" Type Specific: ISA Io Addresses\n");
|
|
break;
|
|
case ACPI_ENTIRE_RANGE:
|
|
dbg(" Type Specific: ISA and non-ISA Io Addresses\n");
|
|
break;
|
|
default:
|
|
dbg(" Type Specific: Invalid range attribute\n");
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case ACPI_BUS_NUMBER_RANGE:
|
|
dbg(" Resource Type: Bus Number Range(fixed)\n");
|
|
/* fixup to be compatible with the rest of php driver */
|
|
data32->min_address_range++;
|
|
data32->address_length--;
|
|
aprh = &ab->bus_head;
|
|
tprh = &ab->tbus_head;
|
|
break;
|
|
default:
|
|
dbg(" Resource Type: Invalid resource type. Exiting.\n");
|
|
return;
|
|
}
|
|
|
|
dbg(" Resource %s\n", ACPI_CONSUMER == data32->producer_consumer ? "Consumer":"Producer");
|
|
dbg(" %s decode\n", ACPI_SUB_DECODE == data32->decode ? "Subtractive":"Positive");
|
|
dbg(" Min address is %s fixed\n", ACPI_ADDRESS_FIXED == data32->min_address_fixed ? "":"not");
|
|
dbg(" Max address is %s fixed\n", ACPI_ADDRESS_FIXED == data32->max_address_fixed ? "":"not");
|
|
dbg(" Granularity: %08X\n", data32->granularity);
|
|
dbg(" Address range min: %08X\n", data32->min_address_range);
|
|
dbg(" Address range max: %08X\n", data32->max_address_range);
|
|
dbg(" Address translation offset: %08X\n", data32->address_translation_offset);
|
|
dbg(" Address Length: %08X\n", data32->address_length);
|
|
|
|
if (0xFF != data32->resource_source.index) {
|
|
dbg(" Resource Source Index: %X\n", data32->resource_source.index);
|
|
/* dbg(" Resource Source: %s\n", data32->resource_source.string_ptr); */
|
|
}
|
|
|
|
pciehprm_add_resource(aprh, data32->min_address_range, data32->address_length);
|
|
}
|
|
|
|
static acpi_status acpi_parse_crs(
|
|
struct acpi_bridge *ab,
|
|
struct acpi_resource *crsbuf
|
|
)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
struct acpi_resource *resource = crsbuf;
|
|
u8 count = 0;
|
|
u8 done = 0;
|
|
|
|
while (!done) {
|
|
dbg("acpi_pciehprm: PCI bus 0x%x Resource structure %x.\n", ab->bus, count++);
|
|
switch (resource->id) {
|
|
case ACPI_RSTYPE_IRQ:
|
|
dbg("Irq -------- Resource\n");
|
|
break;
|
|
case ACPI_RSTYPE_DMA:
|
|
dbg("DMA -------- Resource\n");
|
|
break;
|
|
case ACPI_RSTYPE_START_DPF:
|
|
dbg("Start DPF -------- Resource\n");
|
|
break;
|
|
case ACPI_RSTYPE_END_DPF:
|
|
dbg("End DPF -------- Resource\n");
|
|
break;
|
|
case ACPI_RSTYPE_IO:
|
|
acpi_parse_io (ab, &resource->data);
|
|
break;
|
|
case ACPI_RSTYPE_FIXED_IO:
|
|
acpi_parse_fixed_io (ab, &resource->data);
|
|
break;
|
|
case ACPI_RSTYPE_VENDOR:
|
|
dbg("Vendor -------- Resource\n");
|
|
break;
|
|
case ACPI_RSTYPE_END_TAG:
|
|
dbg("End_tag -------- Resource\n");
|
|
done = 1;
|
|
break;
|
|
case ACPI_RSTYPE_MEM24:
|
|
dbg("Mem24 -------- Resource\n");
|
|
break;
|
|
case ACPI_RSTYPE_MEM32:
|
|
dbg("Mem32 -------- Resource\n");
|
|
break;
|
|
case ACPI_RSTYPE_FIXED_MEM32:
|
|
dbg("Fixed Mem32 -------- Resource\n");
|
|
break;
|
|
case ACPI_RSTYPE_ADDRESS16:
|
|
acpi_parse_address16_32(ab, &resource->data, ACPI_RSTYPE_ADDRESS16);
|
|
break;
|
|
case ACPI_RSTYPE_ADDRESS32:
|
|
acpi_parse_address16_32(ab, &resource->data, ACPI_RSTYPE_ADDRESS32);
|
|
break;
|
|
case ACPI_RSTYPE_ADDRESS64:
|
|
info("Address64 -------- Resource unparsed\n");
|
|
break;
|
|
case ACPI_RSTYPE_EXT_IRQ:
|
|
dbg("Ext Irq -------- Resource\n");
|
|
break;
|
|
default:
|
|
dbg("Invalid -------- resource type 0x%x\n", resource->id);
|
|
break;
|
|
}
|
|
|
|
resource = (struct acpi_resource *) ((char *)resource + resource->length);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
static acpi_status acpi_get_crs( struct acpi_bridge *ab)
|
|
{
|
|
acpi_status status;
|
|
struct acpi_resource *crsbuf;
|
|
|
|
status = acpi_evaluate_crs(ab->handle, &crsbuf);
|
|
if (ACPI_SUCCESS(status)) {
|
|
status = acpi_parse_crs(ab, crsbuf);
|
|
kfree(crsbuf);
|
|
|
|
pciehp_resource_sort_and_combine(&ab->bus_head);
|
|
pciehp_resource_sort_and_combine(&ab->io_head);
|
|
pciehp_resource_sort_and_combine(&ab->mem_head);
|
|
pciehp_resource_sort_and_combine(&ab->p_mem_head);
|
|
|
|
pciehprm_add_resources (&ab->tbus_head, ab->bus_head);
|
|
pciehprm_add_resources (&ab->tio_head, ab->io_head);
|
|
pciehprm_add_resources (&ab->tmem_head, ab->mem_head);
|
|
pciehprm_add_resources (&ab->tp_mem_head, ab->p_mem_head);
|
|
}
|
|
|
|
return 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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
static acpi_status pciehprm_acpi_build_php_slots_callback(
|
|
acpi_handle handle,
|
|
u32 Level,
|
|
void *context,
|
|
void **retval
|
|
)
|
|
{
|
|
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_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);
|
|
return -1;
|
|
}
|
|
|
|
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;
|
|
|
|
/* get root pci bridge's current resources */
|
|
status = acpi_get_crs(ab);
|
|
if (ACPI_FAILURE(status)) {
|
|
err("acpi_pciehprm:%s evaluate _CRS fail=0x%x\n", path_name, status);
|
|
kfree(ab);
|
|
return NULL;
|
|
}
|
|
|
|
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)
|
|
{
|
|
acpi_status status;
|
|
|
|
/*
|
|
* TBD: traverse LDM device tree with the help of
|
|
* unified ACPI augmented for php device population.
|
|
*/
|
|
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);
|
|
|
|
free_pci_resource (aps->io_head);
|
|
free_pci_resource (aps->bus_head);
|
|
free_pci_resource (aps->mem_head);
|
|
free_pci_resource (aps->p_mem_head);
|
|
|
|
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);
|
|
}
|
|
|
|
free_pci_resource (ab->io_head);
|
|
free_pci_resource (ab->tio_head);
|
|
free_pci_resource (ab->bus_head);
|
|
free_pci_resource (ab->tbus_head);
|
|
free_pci_resource (ab->mem_head);
|
|
free_pci_resource (ab->tmem_head);
|
|
free_pci_resource (ab->p_mem_head);
|
|
free_pci_resource (ab->tp_mem_head);
|
|
|
|
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 int print_acpi_resources (struct acpi_bridge *ab)
|
|
{
|
|
struct acpi_php_slot *aps;
|
|
int i;
|
|
|
|
switch (ab->type) {
|
|
case BRIDGE_TYPE_HOST:
|
|
dbg("PCI HOST Bridge (%x) [%s]\n", ab->bus, acpi_path_name(ab->handle));
|
|
break;
|
|
case BRIDGE_TYPE_P2P:
|
|
dbg("PCI P2P Bridge (%x-%x) [%s]\n", ab->pbus, ab->bus, acpi_path_name(ab->handle));
|
|
break;
|
|
};
|
|
|
|
print_pci_resources (ab);
|
|
|
|
for ( i = -1, aps = ab->slots; aps; aps = aps->next) {
|
|
if (aps->dev == i)
|
|
continue;
|
|
dbg(" Slot sun(%x) s:b:d:f(%02x:%02x:%02x:%02x)\n", aps->sun, aps->seg, aps->bus, aps->dev, aps->fun);
|
|
print_slot_resources(aps);
|
|
i = aps->dev;
|
|
}
|
|
|
|
if (ab->child)
|
|
print_acpi_resources (ab->child);
|
|
|
|
if (ab->next)
|
|
print_acpi_resources (ab->next);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int pciehprm_print_pirt(void)
|
|
{
|
|
dbg("PCIEHPRM ACPI Slots\n");
|
|
if (acpi_bridges_head)
|
|
print_acpi_resources (acpi_bridges_head);
|
|
|
|
return 0;
|
|
}
|
|
|
|
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
|
|
|
|
static void pciehprm_dump_func_res( struct pci_func *fun)
|
|
{
|
|
struct pci_func *func = fun;
|
|
|
|
if (func->bus_head) {
|
|
dbg(": BUS Resources:\n");
|
|
print_pci_resource (func->bus_head);
|
|
}
|
|
if (func->io_head) {
|
|
dbg(": IO Resources:\n");
|
|
print_pci_resource (func->io_head);
|
|
}
|
|
if (func->mem_head) {
|
|
dbg(": MEM Resources:\n");
|
|
print_pci_resource (func->mem_head);
|
|
}
|
|
if (func->p_mem_head) {
|
|
dbg(": PMEM Resources:\n");
|
|
print_pci_resource (func->p_mem_head);
|
|
}
|
|
}
|
|
|
|
static void pciehprm_dump_ctrl_res( struct controller *ctlr)
|
|
{
|
|
struct controller *ctrl = ctlr;
|
|
|
|
if (ctrl->bus_head) {
|
|
dbg(": BUS Resources:\n");
|
|
print_pci_resource (ctrl->bus_head);
|
|
}
|
|
if (ctrl->io_head) {
|
|
dbg(": IO Resources:\n");
|
|
print_pci_resource (ctrl->io_head);
|
|
}
|
|
if (ctrl->mem_head) {
|
|
dbg(": MEM Resources:\n");
|
|
print_pci_resource (ctrl->mem_head);
|
|
}
|
|
if (ctrl->p_mem_head) {
|
|
dbg(": PMEM Resources:\n");
|
|
print_pci_resource (ctrl->p_mem_head);
|
|
}
|
|
}
|
|
|
|
static int pciehprm_get_used_resources (
|
|
struct controller *ctrl,
|
|
struct pci_func *func
|
|
)
|
|
{
|
|
return pciehp_save_used_resources (ctrl, func, !DISABLE_CARD);
|
|
}
|
|
|
|
static int configure_existing_function(
|
|
struct controller *ctrl,
|
|
struct pci_func *func
|
|
)
|
|
{
|
|
int rc;
|
|
|
|
/* see how much resources the func has used. */
|
|
rc = pciehprm_get_used_resources (ctrl, func);
|
|
|
|
if (!rc) {
|
|
/* subtract the resources used by the func from ctrl resources */
|
|
rc = pciehprm_delete_resources (&ctrl->bus_head, func->bus_head);
|
|
rc |= pciehprm_delete_resources (&ctrl->io_head, func->io_head);
|
|
rc |= pciehprm_delete_resources (&ctrl->mem_head, func->mem_head);
|
|
rc |= pciehprm_delete_resources (&ctrl->p_mem_head, func->p_mem_head);
|
|
if (rc)
|
|
warn("aCEF: cannot del used resources\n");
|
|
} else
|
|
err("aCEF: cannot get used resources\n");
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int bind_pci_resources_to_slots ( struct controller *ctrl)
|
|
{
|
|
struct pci_func *func, new_func;
|
|
int busn = ctrl->slot_bus;
|
|
int devn, funn;
|
|
u32 vid;
|
|
|
|
for (devn = 0; devn < 32; devn++) {
|
|
for (funn = 0; funn < 8; funn++) {
|
|
/*
|
|
if (devn == ctrl->device && funn == ctrl->function)
|
|
continue;
|
|
*/
|
|
/* find out if this entry is for an occupied slot */
|
|
vid = 0xFFFFFFFF;
|
|
pci_bus_read_config_dword(ctrl->pci_dev->subordinate, PCI_DEVFN(devn, funn), PCI_VENDOR_ID, &vid);
|
|
|
|
if (vid != 0xFFFFFFFF) {
|
|
dbg("%s: vid = %x\n", __FUNCTION__, vid);
|
|
func = pciehp_slot_find(busn, devn, funn);
|
|
if (!func) {
|
|
memset(&new_func, 0, sizeof(struct pci_func));
|
|
new_func.bus = busn;
|
|
new_func.device = devn;
|
|
new_func.function = funn;
|
|
new_func.is_a_board = 1;
|
|
configure_existing_function(ctrl, &new_func);
|
|
pciehprm_dump_func_res(&new_func);
|
|
} else {
|
|
configure_existing_function(ctrl, func);
|
|
pciehprm_dump_func_res(func);
|
|
}
|
|
dbg("aCCF:existing PCI 0x%x Func ResourceDump\n", ctrl->bus);
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bind_pci_resources(
|
|
struct controller *ctrl,
|
|
struct acpi_bridge *ab
|
|
)
|
|
{
|
|
int status = 0;
|
|
|
|
if (ab->bus_head) {
|
|
dbg("bapr: BUS Resources add on PCI 0x%x\n", ab->bus);
|
|
status = pciehprm_add_resources (&ctrl->bus_head, ab->bus_head);
|
|
if (pciehprm_delete_resources (&ab->bus_head, ctrl->bus_head))
|
|
warn("bapr: cannot sub BUS Resource on PCI 0x%x\n", ab->bus);
|
|
if (status) {
|
|
err("bapr: BUS Resource add on PCI 0x%x: fail=0x%x\n", ab->bus, status);
|
|
return status;
|
|
}
|
|
} else
|
|
info("bapr: No BUS Resource on PCI 0x%x.\n", ab->bus);
|
|
|
|
if (ab->io_head) {
|
|
dbg("bapr: IO Resources add on PCI 0x%x\n", ab->bus);
|
|
status = pciehprm_add_resources (&ctrl->io_head, ab->io_head);
|
|
if (pciehprm_delete_resources (&ab->io_head, ctrl->io_head))
|
|
warn("bapr: cannot sub IO Resource on PCI 0x%x\n", ab->bus);
|
|
if (status) {
|
|
err("bapr: IO Resource add on PCI 0x%x: fail=0x%x\n", ab->bus, status);
|
|
return status;
|
|
}
|
|
} else
|
|
info("bapr: No IO Resource on PCI 0x%x.\n", ab->bus);
|
|
|
|
if (ab->mem_head) {
|
|
dbg("bapr: MEM Resources add on PCI 0x%x\n", ab->bus);
|
|
status = pciehprm_add_resources (&ctrl->mem_head, ab->mem_head);
|
|
if (pciehprm_delete_resources (&ab->mem_head, ctrl->mem_head))
|
|
warn("bapr: cannot sub MEM Resource on PCI 0x%x\n", ab->bus);
|
|
if (status) {
|
|
err("bapr: MEM Resource add on PCI 0x%x: fail=0x%x\n", ab->bus, status);
|
|
return status;
|
|
}
|
|
} else
|
|
info("bapr: No MEM Resource on PCI 0x%x.\n", ab->bus);
|
|
|
|
if (ab->p_mem_head) {
|
|
dbg("bapr: PMEM Resources add on PCI 0x%x\n", ab->bus);
|
|
status = pciehprm_add_resources (&ctrl->p_mem_head, ab->p_mem_head);
|
|
if (pciehprm_delete_resources (&ab->p_mem_head, ctrl->p_mem_head))
|
|
warn("bapr: cannot sub PMEM Resource on PCI 0x%x\n", ab->bus);
|
|
if (status) {
|
|
err("bapr: PMEM Resource add on PCI 0x%x: fail=0x%x\n", ab->bus, status);
|
|
return status;
|
|
}
|
|
} else
|
|
info("bapr: No PMEM Resource on PCI 0x%x.\n", ab->bus);
|
|
|
|
return status;
|
|
}
|
|
|
|
static int no_pci_resources( struct acpi_bridge *ab)
|
|
{
|
|
return !(ab->p_mem_head || ab->mem_head || ab->io_head || ab->bus_head);
|
|
}
|
|
|
|
static int find_pci_bridge_resources (
|
|
struct controller *ctrl,
|
|
struct acpi_bridge *ab
|
|
)
|
|
{
|
|
int rc = 0;
|
|
struct pci_func func;
|
|
|
|
memset(&func, 0, sizeof(struct pci_func));
|
|
|
|
func.bus = ab->pbus;
|
|
func.device = ab->pdevice;
|
|
func.function = ab->pfunction;
|
|
func.is_a_board = 1;
|
|
|
|
/* Get used resources for this PCI bridge */
|
|
rc = pciehp_save_used_resources (ctrl, &func, !DISABLE_CARD);
|
|
|
|
ab->io_head = func.io_head;
|
|
ab->mem_head = func.mem_head;
|
|
ab->p_mem_head = func.p_mem_head;
|
|
ab->bus_head = func.bus_head;
|
|
if (ab->bus_head)
|
|
pciehprm_delete_resource(&ab->bus_head, ctrl->pci_dev->subordinate->number, 1);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int get_pci_resources_from_bridge(
|
|
struct controller *ctrl,
|
|
struct acpi_bridge *ab
|
|
)
|
|
{
|
|
int rc = 0;
|
|
|
|
dbg("grfb: Get Resources for PCI 0x%x from actual PCI bridge 0x%x.\n", ctrl->bus, ab->bus);
|
|
|
|
rc = find_pci_bridge_resources (ctrl, ab);
|
|
|
|
pciehp_resource_sort_and_combine(&ab->bus_head);
|
|
pciehp_resource_sort_and_combine(&ab->io_head);
|
|
pciehp_resource_sort_and_combine(&ab->mem_head);
|
|
pciehp_resource_sort_and_combine(&ab->p_mem_head);
|
|
|
|
pciehprm_add_resources (&ab->tbus_head, ab->bus_head);
|
|
pciehprm_add_resources (&ab->tio_head, ab->io_head);
|
|
pciehprm_add_resources (&ab->tmem_head, ab->mem_head);
|
|
pciehprm_add_resources (&ab->tp_mem_head, ab->p_mem_head);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int get_pci_resources(
|
|
struct controller *ctrl,
|
|
struct acpi_bridge *ab
|
|
)
|
|
{
|
|
int rc = 0;
|
|
|
|
if (no_pci_resources(ab)) {
|
|
dbg("spbr:PCI 0x%x has no resources. Get parent resources.\n", ab->bus);
|
|
rc = get_pci_resources_from_bridge(ctrl, ab);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Get resources for this ctrl.
|
|
* 1. get total resources from ACPI _CRS or bridge (this ctrl)
|
|
* 2. find used resources of existing adapters
|
|
* 3. subtract used resources from total resources
|
|
*/
|
|
int pciehprm_find_available_resources( struct controller *ctrl)
|
|
{
|
|
int rc = 0;
|
|
struct acpi_bridge *ab;
|
|
|
|
ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->pci_dev->subordinate->number);
|
|
if (!ab) {
|
|
err("pfar:cannot locate acpi bridge of PCI 0x%x.\n", ctrl->pci_dev->subordinate->number);
|
|
return -1;
|
|
}
|
|
if (no_pci_resources(ab)) {
|
|
rc = get_pci_resources(ctrl, ab);
|
|
if (rc) {
|
|
err("pfar:cannot get pci resources of PCI 0x%x.\n", ctrl->pci_dev->subordinate->number);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
rc = bind_pci_resources(ctrl, ab);
|
|
dbg("pfar:pre-Bind PCI 0x%x Ctrl Resource Dump\n", ctrl->pci_dev->subordinate->number);
|
|
pciehprm_dump_ctrl_res(ctrl);
|
|
|
|
bind_pci_resources_to_slots (ctrl);
|
|
|
|
dbg("pfar:post-Bind PCI 0x%x Ctrl Resource Dump\n", ctrl->pci_dev->subordinate->number);
|
|
pciehprm_dump_ctrl_res(ctrl);
|
|
|
|
return rc;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
/* 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, &command);
|
|
|
|
if (card_type == PCI_HEADER_TYPE_BRIDGE) {
|
|
rc = pci_bus_read_config_word(pci_bus, devfn, PCI_BRIDGE_CONTROL, &bcommand);
|
|
}
|
|
|
|
cmd = command = command | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE
|
|
| PCI_COMMAND_IO | PCI_COMMAND_MEMORY;
|
|
bcmd = bcommand = bcommand | 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);
|
|
}
|
|
}
|
|
|