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 5bd87be88Ssethg * Common Development and Distribution License (the "License"). 6bd87be88Ssethg * 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 /* 2205f867c3Sgs * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 237c478bd9Sstevel@tonic-gate * Use is subject to license terms. 24*cd0d4b40SRobert Mustacchi * Copyright 2022 Oxide Computer Company 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate /* 287c478bd9Sstevel@tonic-gate * Determine the PCI configuration mechanism recommended by the BIOS. 297c478bd9Sstevel@tonic-gate */ 307c478bd9Sstevel@tonic-gate 317c478bd9Sstevel@tonic-gate #include <sys/types.h> 327c478bd9Sstevel@tonic-gate #include <sys/sunddi.h> 337c478bd9Sstevel@tonic-gate #include <sys/pci_impl.h> 347c478bd9Sstevel@tonic-gate #include <sys/ddi_subrdefs.h> 357c478bd9Sstevel@tonic-gate #include <sys/bootconf.h> 367c478bd9Sstevel@tonic-gate #include <sys/psw.h> 377c478bd9Sstevel@tonic-gate #include <sys/modctl.h> 387c478bd9Sstevel@tonic-gate #include <sys/errno.h> 397c478bd9Sstevel@tonic-gate #include <sys/pci.h> 407c478bd9Sstevel@tonic-gate #include <sys/pci_cfgspace.h> 417c478bd9Sstevel@tonic-gate #include <sys/reboot.h> 42c88420b3Sdmick #include <sys/pci_cfgspace_impl.h> 43c88420b3Sdmick #include <sys/mutex.h> 44*cd0d4b40SRobert Mustacchi #include <sys/plat/pci_prd.h> 457c478bd9Sstevel@tonic-gate 467c478bd9Sstevel@tonic-gate extern int pci_boot_debug; 47*cd0d4b40SRobert Mustacchi extern int pci_boot_maxbus; 487c478bd9Sstevel@tonic-gate 497c478bd9Sstevel@tonic-gate /* 507c478bd9Sstevel@tonic-gate * Interface routines 517c478bd9Sstevel@tonic-gate */ 527c478bd9Sstevel@tonic-gate void pci_enumerate(int); 537c478bd9Sstevel@tonic-gate void pci_setup_tree(void); 547c478bd9Sstevel@tonic-gate void pci_reprogram(void); 55*cd0d4b40SRobert Mustacchi dev_info_t *pci_boot_bus_to_dip(uint32_t); 567c478bd9Sstevel@tonic-gate 577c478bd9Sstevel@tonic-gate static struct modlmisc modlmisc = { 58613b2871SRichard Bean &mod_miscops, "PCI BIOS interface" 597c478bd9Sstevel@tonic-gate }; 607c478bd9Sstevel@tonic-gate 617c478bd9Sstevel@tonic-gate static struct modlinkage modlinkage = { 627c478bd9Sstevel@tonic-gate MODREV_1, (void *)&modlmisc, NULL 637c478bd9Sstevel@tonic-gate }; 647c478bd9Sstevel@tonic-gate 65*cd0d4b40SRobert Mustacchi static pci_prd_upcalls_t pci_upcalls = { 66*cd0d4b40SRobert Mustacchi .pru_bus2dip_f = pci_boot_bus_to_dip 67*cd0d4b40SRobert Mustacchi }; 68*cd0d4b40SRobert Mustacchi 697c478bd9Sstevel@tonic-gate int _init(void)707c478bd9Sstevel@tonic-gate_init(void) 717c478bd9Sstevel@tonic-gate { 727c478bd9Sstevel@tonic-gate int err; 737c478bd9Sstevel@tonic-gate 74*cd0d4b40SRobert Mustacchi if ((err = pci_prd_init(&pci_upcalls)) != 0) { 75*cd0d4b40SRobert Mustacchi return (err); 76*cd0d4b40SRobert Mustacchi } 77*cd0d4b40SRobert Mustacchi 78*cd0d4b40SRobert Mustacchi if ((err = mod_install(&modlinkage)) != 0) { 79*cd0d4b40SRobert Mustacchi pci_prd_fini(); 807c478bd9Sstevel@tonic-gate return (err); 81*cd0d4b40SRobert Mustacchi } 827c478bd9Sstevel@tonic-gate 837c478bd9Sstevel@tonic-gate impl_bus_add_probe(pci_enumerate); 847c478bd9Sstevel@tonic-gate return (0); 857c478bd9Sstevel@tonic-gate } 867c478bd9Sstevel@tonic-gate 877c478bd9Sstevel@tonic-gate int _fini(void)887c478bd9Sstevel@tonic-gate_fini(void) 897c478bd9Sstevel@tonic-gate { 907c478bd9Sstevel@tonic-gate int err; 917c478bd9Sstevel@tonic-gate 927c478bd9Sstevel@tonic-gate if ((err = mod_remove(&modlinkage)) != 0) 937c478bd9Sstevel@tonic-gate return (err); 947c478bd9Sstevel@tonic-gate 957c478bd9Sstevel@tonic-gate impl_bus_delete_probe(pci_enumerate); 96*cd0d4b40SRobert Mustacchi pci_prd_fini(); 977c478bd9Sstevel@tonic-gate return (0); 987c478bd9Sstevel@tonic-gate } 997c478bd9Sstevel@tonic-gate 1007c478bd9Sstevel@tonic-gate int _info(struct modinfo * modinfop)1017c478bd9Sstevel@tonic-gate_info(struct modinfo *modinfop) 1027c478bd9Sstevel@tonic-gate { 1037c478bd9Sstevel@tonic-gate return (mod_info(&modlinkage, modinfop)); 1047c478bd9Sstevel@tonic-gate } 1057c478bd9Sstevel@tonic-gate 106b1f176e8Sjg 1077c478bd9Sstevel@tonic-gate /* 108c88420b3Sdmick * This function is invoked twice: first time, with reprogram=0 to 1097c478bd9Sstevel@tonic-gate * set up the PCI portion of the device tree. The second time is 1107c478bd9Sstevel@tonic-gate * for reprogramming devices not set up by the BIOS. 1117c478bd9Sstevel@tonic-gate */ 1127c478bd9Sstevel@tonic-gate void pci_enumerate(int reprogram)1137c478bd9Sstevel@tonic-gatepci_enumerate(int reprogram) 1147c478bd9Sstevel@tonic-gate { 115bd87be88Ssethg extern void add_pci_fixes(void); 116bd87be88Ssethg extern void undo_pci_fixes(void); 117bd87be88Ssethg 118*cd0d4b40SRobert Mustacchi /* 119*cd0d4b40SRobert Mustacchi * On our first pass through here actually determine what the maximum 120*cd0d4b40SRobert Mustacchi * bus that we should use is. 121*cd0d4b40SRobert Mustacchi */ 122*cd0d4b40SRobert Mustacchi if (reprogram == 0) { 123*cd0d4b40SRobert Mustacchi pci_boot_maxbus = pci_prd_max_bus(); 124*cd0d4b40SRobert Mustacchi } 125*cd0d4b40SRobert Mustacchi 126bd87be88Ssethg add_pci_fixes(); 127bd87be88Ssethg 1287c478bd9Sstevel@tonic-gate if (reprogram) { 1297c478bd9Sstevel@tonic-gate pci_reprogram(); 130bd87be88Ssethg undo_pci_fixes(); 1317c478bd9Sstevel@tonic-gate return; 1327c478bd9Sstevel@tonic-gate } 1337c478bd9Sstevel@tonic-gate 1347c478bd9Sstevel@tonic-gate /* setup device tree */ 1357c478bd9Sstevel@tonic-gate pci_setup_tree(); 136bd87be88Ssethg undo_pci_fixes(); 1377c478bd9Sstevel@tonic-gate } 138