17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 527255037Spjha * Common Development and Distribution License (the "License"). 627255037Spjha * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 2227255037Spjha * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 237c478bd9Sstevel@tonic-gate * Use is subject to license terms. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate 267c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 277c478bd9Sstevel@tonic-gate 287c478bd9Sstevel@tonic-gate #include <sys/types.h> 297c478bd9Sstevel@tonic-gate #include <sys/kmem.h> 307c478bd9Sstevel@tonic-gate #include <sys/async.h> 317c478bd9Sstevel@tonic-gate #include <sys/sysmacros.h> 327c478bd9Sstevel@tonic-gate #include <sys/sunddi.h> 337c478bd9Sstevel@tonic-gate #include <sys/sunndi.h> 347c478bd9Sstevel@tonic-gate #include <sys/ddi_impldefs.h> 357c478bd9Sstevel@tonic-gate #include <sys/ddi_implfuncs.h> 367c478bd9Sstevel@tonic-gate #include <sys/pci/pci_obj.h> 377c478bd9Sstevel@tonic-gate #include <sys/pci.h> 3827255037Spjha #include <sys/pci_cap.h> 397c478bd9Sstevel@tonic-gate 407c478bd9Sstevel@tonic-gate /*LINTLIBRARY*/ 417c478bd9Sstevel@tonic-gate 427c478bd9Sstevel@tonic-gate void 437c478bd9Sstevel@tonic-gate pcix_set_cmd_reg(dev_info_t *child, uint16_t value) 447c478bd9Sstevel@tonic-gate { 4527255037Spjha uint16_t pcix_cap_ptr, pcix_cmd; 467c478bd9Sstevel@tonic-gate ddi_acc_handle_t handle; 477c478bd9Sstevel@tonic-gate 487c478bd9Sstevel@tonic-gate if (pci_config_setup(child, &handle) != DDI_SUCCESS) 497c478bd9Sstevel@tonic-gate return; 507c478bd9Sstevel@tonic-gate 517c478bd9Sstevel@tonic-gate /* 527c478bd9Sstevel@tonic-gate * Only modify the Command Register of non-bridge functions. 537c478bd9Sstevel@tonic-gate */ 5427255037Spjha if ((pci_config_get8(handle, PCI_CONF_HEADER) & PCI_HEADER_TYPE_M) 5527255037Spjha == PCI_HEADER_PPB) 5627255037Spjha goto teardown; 577c478bd9Sstevel@tonic-gate 5827255037Spjha if (PCI_CAP_LOCATE(handle, PCI_CAP_ID_PCIX, &pcix_cap_ptr) == 5927255037Spjha DDI_FAILURE) 6027255037Spjha goto teardown; 617c478bd9Sstevel@tonic-gate 6227255037Spjha DEBUG1(DBG_INIT_CLD, child, "pcix_set_cmd_reg: pcix_cap_ptr = %x\n", 6327255037Spjha pcix_cap_ptr); 647c478bd9Sstevel@tonic-gate 657c478bd9Sstevel@tonic-gate /* 667c478bd9Sstevel@tonic-gate * Read the PCI-X Command Register. 677c478bd9Sstevel@tonic-gate */ 6827255037Spjha if ((pcix_cmd = PCI_CAP_GET16(handle, NULL, pcix_cap_ptr, 2)) 69*dc5d169bSpjha == PCI_CAP_EINVAL16) 7027255037Spjha goto teardown; 717c478bd9Sstevel@tonic-gate 7227255037Spjha DEBUG1(DBG_INIT_CLD, child, "pcix_set_cmd_reg: PCI-X CMD Register " 7327255037Spjha "(Before) %x\n", pcix_cmd); 747c478bd9Sstevel@tonic-gate 757c478bd9Sstevel@tonic-gate pcix_cmd &= ~(0x1f << 2); /* clear bits 6-2 */ 767c478bd9Sstevel@tonic-gate pcix_cmd |= value; 777c478bd9Sstevel@tonic-gate 7827255037Spjha DEBUG1(DBG_INIT_CLD, child, "pcix_set_cmd_reg: PCI-X CMD Register " 7927255037Spjha "(After) %x\n", pcix_cmd); 807c478bd9Sstevel@tonic-gate 8127255037Spjha PCI_CAP_PUT16(handle, NULL, pcix_cap_ptr, 2, pcix_cmd); 827c478bd9Sstevel@tonic-gate 8327255037Spjha teardown: 847c478bd9Sstevel@tonic-gate pci_config_teardown(&handle); 857c478bd9Sstevel@tonic-gate } 86