/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/kmem.h>
#include <sys/async.h>
#include <sys/sysmacros.h>
#include <sys/sunddi.h>
#include <sys/sunndi.h>
#include <sys/ddi_impldefs.h>
#include <sys/ddi_implfuncs.h>
#include <sys/pci/pci_obj.h>
#include <sys/pci.h>
#include <sys/pci_cap.h>
/*LINTLIBRARY*/
void
pcix_set_cmd_reg(dev_info_t *child, uint16_t value)
{
uint16_t pcix_cap_ptr, pcix_cmd;
ddi_acc_handle_t handle;
if (pci_config_setup(child, &handle) != DDI_SUCCESS)
return;
/*
* Only modify the Command Register of non-bridge functions.
*/
if ((pci_config_get8(handle, PCI_CONF_HEADER) & PCI_HEADER_TYPE_M)
== PCI_HEADER_PPB)
goto teardown;
if (PCI_CAP_LOCATE(handle, PCI_CAP_ID_PCIX, &pcix_cap_ptr) ==
DDI_FAILURE)
goto teardown;
DEBUG1(DBG_INIT_CLD, child, "pcix_set_cmd_reg: pcix_cap_ptr = %x\n",
pcix_cap_ptr);
/*
* Read the PCI-X Command Register.
*/
if ((pcix_cmd = PCI_CAP_GET16(handle, NULL, pcix_cap_ptr, 2))
== PCI_CAP_EINVAL16)
goto teardown;
DEBUG1(DBG_INIT_CLD, child, "pcix_set_cmd_reg: PCI-X CMD Register "
"(Before) %x\n", pcix_cmd);
pcix_cmd &= ~(0x1f << 2); /* clear bits 6-2 */
pcix_cmd |= value;
DEBUG1(DBG_INIT_CLD, child, "pcix_set_cmd_reg: PCI-X CMD Register "
"(After) %x\n", pcix_cmd);
PCI_CAP_PUT16(handle, NULL, pcix_cap_ptr, 2, pcix_cmd);
teardown:
pci_config_teardown(&handle);
}