1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate #include <sys/types.h> 30*0Sstevel@tonic-gate #include <sys/kmem.h> 31*0Sstevel@tonic-gate #include <sys/async.h> 32*0Sstevel@tonic-gate #include <sys/sysmacros.h> 33*0Sstevel@tonic-gate #include <sys/sunddi.h> 34*0Sstevel@tonic-gate #include <sys/sunndi.h> 35*0Sstevel@tonic-gate #include <sys/ddi_impldefs.h> 36*0Sstevel@tonic-gate #include <sys/ddi_implfuncs.h> 37*0Sstevel@tonic-gate #include <sys/pci/pci_obj.h> 38*0Sstevel@tonic-gate #include <sys/pci.h> 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate /*LINTLIBRARY*/ 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate static uint16_t 43*0Sstevel@tonic-gate pcix_get_pcix_cap(ddi_acc_handle_t handle) 44*0Sstevel@tonic-gate { 45*0Sstevel@tonic-gate ushort_t caps_ptr, cap; 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate /* 48*0Sstevel@tonic-gate * Walk the Capabilities List and locate 49*0Sstevel@tonic-gate * the PCI-X Capability. 50*0Sstevel@tonic-gate */ 51*0Sstevel@tonic-gate if (pci_config_get16(handle, PCI_CONF_STAT) & PCI_STAT_CAP) 52*0Sstevel@tonic-gate caps_ptr = pci_config_get8(handle, PCI_CONF_CAP_PTR); 53*0Sstevel@tonic-gate else 54*0Sstevel@tonic-gate caps_ptr = PCI_CAP_NEXT_PTR_NULL; 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate while (caps_ptr != PCI_CAP_NEXT_PTR_NULL) { 57*0Sstevel@tonic-gate cap = pci_config_get8(handle, caps_ptr); 58*0Sstevel@tonic-gate if (cap == PCI_CAP_ID_PCIX) 59*0Sstevel@tonic-gate return (caps_ptr); 60*0Sstevel@tonic-gate 61*0Sstevel@tonic-gate caps_ptr = pci_config_get8(handle, caps_ptr + PCI_CAP_NEXT_PTR); 62*0Sstevel@tonic-gate } 63*0Sstevel@tonic-gate 64*0Sstevel@tonic-gate return (0); 65*0Sstevel@tonic-gate } 66*0Sstevel@tonic-gate 67*0Sstevel@tonic-gate void 68*0Sstevel@tonic-gate pcix_set_cmd_reg(dev_info_t *child, uint16_t value) 69*0Sstevel@tonic-gate { 70*0Sstevel@tonic-gate uint16_t pcix_cap_offset, pcix_cmd; 71*0Sstevel@tonic-gate ddi_acc_handle_t handle; 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate if (pci_config_setup(child, &handle) != DDI_SUCCESS) 74*0Sstevel@tonic-gate return; 75*0Sstevel@tonic-gate 76*0Sstevel@tonic-gate /* 77*0Sstevel@tonic-gate * Only modify the Command Register of non-bridge functions. 78*0Sstevel@tonic-gate */ 79*0Sstevel@tonic-gate if ((pci_config_get8(handle, PCI_CONF_HEADER) & 80*0Sstevel@tonic-gate PCI_HEADER_TYPE_M) == PCI_HEADER_PPB) { 81*0Sstevel@tonic-gate pci_config_teardown(&handle); 82*0Sstevel@tonic-gate return; 83*0Sstevel@tonic-gate } 84*0Sstevel@tonic-gate 85*0Sstevel@tonic-gate pcix_cap_offset = pcix_get_pcix_cap(handle); 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate DEBUG1(DBG_INIT_CLD, child, 88*0Sstevel@tonic-gate "pcix_set_cmd_reg: pcix_cap_offset = %x\n", pcix_cap_offset); 89*0Sstevel@tonic-gate 90*0Sstevel@tonic-gate if (pcix_cap_offset) { 91*0Sstevel@tonic-gate /* 92*0Sstevel@tonic-gate * Read the PCI-X Command Register. 93*0Sstevel@tonic-gate */ 94*0Sstevel@tonic-gate pcix_cmd = pci_config_get16(handle, (pcix_cap_offset + 2)); 95*0Sstevel@tonic-gate 96*0Sstevel@tonic-gate DEBUG1(DBG_INIT_CLD, child, 97*0Sstevel@tonic-gate "pcix_set_cmd_reg: PCI-X CMD " 98*0Sstevel@tonic-gate "Register (Before) %x\n", pcix_cmd); 99*0Sstevel@tonic-gate 100*0Sstevel@tonic-gate pcix_cmd &= ~(0x1f << 2); /* clear bits 6-2 */ 101*0Sstevel@tonic-gate pcix_cmd |= value; 102*0Sstevel@tonic-gate 103*0Sstevel@tonic-gate DEBUG1(DBG_INIT_CLD, child, 104*0Sstevel@tonic-gate "pcix_set_cmd_reg: PCI-X CMD " 105*0Sstevel@tonic-gate "Register (After) %x\n", pcix_cmd); 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate pci_config_put16(handle, (pcix_cap_offset + 2), pcix_cmd); 108*0Sstevel@tonic-gate } 109*0Sstevel@tonic-gate 110*0Sstevel@tonic-gate pci_config_teardown(&handle); 111*0Sstevel@tonic-gate } 112