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/*
* 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>
*
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/pci.h>
#include <linux/init.h>
#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)
{
*sun = (u8) (ctrl->first_slot);
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)
{
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);
}
}
static int legacy_pciehprm_init_pci(void)
{
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;
}
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