128bf1fadSJohn Baldwin /* 228bf1fadSJohn Baldwin * Copyright (c) 1997, Stefan Esser <se@freebsd.org> 328bf1fadSJohn Baldwin * Copyright (c) 2000, Michael Smith <msmith@freebsd.org> 428bf1fadSJohn Baldwin * Copyright (c) 2000, BSDi 528bf1fadSJohn Baldwin * All rights reserved. 628bf1fadSJohn Baldwin * 728bf1fadSJohn Baldwin * Redistribution and use in source and binary forms, with or without 828bf1fadSJohn Baldwin * modification, are permitted provided that the following conditions 928bf1fadSJohn Baldwin * are met: 1028bf1fadSJohn Baldwin * 1. Redistributions of source code must retain the above copyright 1128bf1fadSJohn Baldwin * notice unmodified, this list of conditions, and the following 1228bf1fadSJohn Baldwin * disclaimer. 1328bf1fadSJohn Baldwin * 2. Redistributions in binary form must reproduce the above copyright 1428bf1fadSJohn Baldwin * notice, this list of conditions and the following disclaimer in the 1528bf1fadSJohn Baldwin * documentation and/or other materials provided with the distribution. 1628bf1fadSJohn Baldwin * 1728bf1fadSJohn Baldwin * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 1828bf1fadSJohn Baldwin * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 1928bf1fadSJohn Baldwin * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 2028bf1fadSJohn Baldwin * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 2128bf1fadSJohn Baldwin * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 2228bf1fadSJohn Baldwin * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2328bf1fadSJohn Baldwin * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2428bf1fadSJohn Baldwin * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2528bf1fadSJohn Baldwin * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 2628bf1fadSJohn Baldwin * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2728bf1fadSJohn Baldwin * 2828bf1fadSJohn Baldwin * $FreeBSD$ 2928bf1fadSJohn Baldwin * 3028bf1fadSJohn Baldwin */ 3128bf1fadSJohn Baldwin 3228bf1fadSJohn Baldwin #include "opt_bus.h" 3328bf1fadSJohn Baldwin 3428bf1fadSJohn Baldwin #include <sys/param.h> 3528bf1fadSJohn Baldwin #include <sys/systm.h> 3628bf1fadSJohn Baldwin #include <sys/bus.h> 3728bf1fadSJohn Baldwin #include <sys/kernel.h> 3828bf1fadSJohn Baldwin #include <sys/malloc.h> 3928bf1fadSJohn Baldwin #include <sys/module.h> 4028bf1fadSJohn Baldwin 4128bf1fadSJohn Baldwin #include "acpi.h" 4228bf1fadSJohn Baldwin 4328bf1fadSJohn Baldwin #include <dev/acpica/acpivar.h> 4428bf1fadSJohn Baldwin 4528bf1fadSJohn Baldwin #include <sys/pciio.h> 4628bf1fadSJohn Baldwin #include <dev/pci/pcireg.h> 4728bf1fadSJohn Baldwin #include <dev/pci/pcivar.h> 4828bf1fadSJohn Baldwin #include <dev/pci/pci_private.h> 4928bf1fadSJohn Baldwin 5028bf1fadSJohn Baldwin #include "pcib_if.h" 5128bf1fadSJohn Baldwin #include "pci_if.h" 5228bf1fadSJohn Baldwin 5328bf1fadSJohn Baldwin /* 5428bf1fadSJohn Baldwin * Hooks for the ACPI CA debugging infrastructure 5528bf1fadSJohn Baldwin */ 5628bf1fadSJohn Baldwin #define _COMPONENT ACPI_BUS 5728bf1fadSJohn Baldwin ACPI_MODULE_NAME("PCI") 5828bf1fadSJohn Baldwin 5928bf1fadSJohn Baldwin struct acpi_pci_devinfo { 6028bf1fadSJohn Baldwin struct pci_devinfo ap_dinfo; 6128bf1fadSJohn Baldwin ACPI_HANDLE ap_handle; 6228bf1fadSJohn Baldwin }; 6328bf1fadSJohn Baldwin 6428bf1fadSJohn Baldwin static int acpi_pci_probe(device_t dev); 6528bf1fadSJohn Baldwin static int acpi_pci_attach(device_t dev); 6628bf1fadSJohn Baldwin static int acpi_pci_read_ivar(device_t dev, device_t child, int which, 6728bf1fadSJohn Baldwin uintptr_t *result); 6828bf1fadSJohn Baldwin #if 0 6928bf1fadSJohn Baldwin static int acpi_pci_set_powerstate_method(device_t dev, device_t child, 7028bf1fadSJohn Baldwin int state); 7128bf1fadSJohn Baldwin static int acpi_pci_get_powerstate_method(device_t dev, device_t child); 7228bf1fadSJohn Baldwin #endif 7328bf1fadSJohn Baldwin static ACPI_STATUS acpi_pci_save_handle(ACPI_HANDLE handle, UINT32 level, 7428bf1fadSJohn Baldwin void *context, void **status); 7528bf1fadSJohn Baldwin 7628bf1fadSJohn Baldwin static device_method_t acpi_pci_methods[] = { 7728bf1fadSJohn Baldwin /* Device interface */ 7828bf1fadSJohn Baldwin DEVMETHOD(device_probe, acpi_pci_probe), 7928bf1fadSJohn Baldwin DEVMETHOD(device_attach, acpi_pci_attach), 8028bf1fadSJohn Baldwin DEVMETHOD(device_shutdown, bus_generic_shutdown), 8128bf1fadSJohn Baldwin DEVMETHOD(device_suspend, bus_generic_suspend), 8228bf1fadSJohn Baldwin DEVMETHOD(device_resume, bus_generic_resume), 8328bf1fadSJohn Baldwin 8428bf1fadSJohn Baldwin /* Bus interface */ 8528bf1fadSJohn Baldwin DEVMETHOD(bus_print_child, pci_print_child), 8628bf1fadSJohn Baldwin DEVMETHOD(bus_probe_nomatch, pci_probe_nomatch), 8728bf1fadSJohn Baldwin DEVMETHOD(bus_read_ivar, acpi_pci_read_ivar), 8828bf1fadSJohn Baldwin DEVMETHOD(bus_write_ivar, pci_write_ivar), 8928bf1fadSJohn Baldwin DEVMETHOD(bus_driver_added, bus_generic_driver_added), 9028bf1fadSJohn Baldwin DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 9128bf1fadSJohn Baldwin DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 9228bf1fadSJohn Baldwin 9328bf1fadSJohn Baldwin DEVMETHOD(bus_get_resource_list,pci_get_resource_list), 9428bf1fadSJohn Baldwin DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource), 9528bf1fadSJohn Baldwin DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 9628bf1fadSJohn Baldwin DEVMETHOD(bus_delete_resource, pci_delete_resource), 9728bf1fadSJohn Baldwin DEVMETHOD(bus_alloc_resource, pci_alloc_resource), 9828bf1fadSJohn Baldwin DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource), 9928bf1fadSJohn Baldwin DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 10028bf1fadSJohn Baldwin DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 10128bf1fadSJohn Baldwin 10228bf1fadSJohn Baldwin /* PCI interface */ 10328bf1fadSJohn Baldwin DEVMETHOD(pci_read_config, pci_read_config_method), 10428bf1fadSJohn Baldwin DEVMETHOD(pci_write_config, pci_write_config_method), 10528bf1fadSJohn Baldwin DEVMETHOD(pci_enable_busmaster, pci_enable_busmaster_method), 10628bf1fadSJohn Baldwin DEVMETHOD(pci_disable_busmaster, pci_disable_busmaster_method), 10728bf1fadSJohn Baldwin DEVMETHOD(pci_enable_io, pci_enable_io_method), 10828bf1fadSJohn Baldwin DEVMETHOD(pci_disable_io, pci_disable_io_method), 10928bf1fadSJohn Baldwin /* XXX: We should override these two. */ 11028bf1fadSJohn Baldwin DEVMETHOD(pci_get_powerstate, pci_get_powerstate_method), 11128bf1fadSJohn Baldwin DEVMETHOD(pci_set_powerstate, pci_set_powerstate_method), 11228bf1fadSJohn Baldwin 11328bf1fadSJohn Baldwin { 0, 0 } 11428bf1fadSJohn Baldwin }; 11528bf1fadSJohn Baldwin 11628bf1fadSJohn Baldwin static driver_t acpi_pci_driver = { 11728bf1fadSJohn Baldwin "pci", 11828bf1fadSJohn Baldwin acpi_pci_methods, 11928bf1fadSJohn Baldwin 0, /* no softc */ 12028bf1fadSJohn Baldwin }; 12128bf1fadSJohn Baldwin 12228bf1fadSJohn Baldwin DRIVER_MODULE(acpi_pci, pcib, acpi_pci_driver, pci_devclass, 0, 0); 12328bf1fadSJohn Baldwin MODULE_VERSION(acpi_pci, 1); 12428bf1fadSJohn Baldwin MODULE_DEPEND(acpi_pci, pci, 1, 1, 1); 12528bf1fadSJohn Baldwin 12628bf1fadSJohn Baldwin static int 12728bf1fadSJohn Baldwin acpi_pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 12828bf1fadSJohn Baldwin { 12928bf1fadSJohn Baldwin struct acpi_pci_devinfo *dinfo; 13028bf1fadSJohn Baldwin 13128bf1fadSJohn Baldwin switch (which) { 13228bf1fadSJohn Baldwin case ACPI_IVAR_HANDLE: 13328bf1fadSJohn Baldwin dinfo = device_get_ivars(child); 13428bf1fadSJohn Baldwin *result = (uintptr_t)dinfo->ap_handle; 13528bf1fadSJohn Baldwin return(0); 13628bf1fadSJohn Baldwin } 13728bf1fadSJohn Baldwin return(pci_read_ivar(dev, child, which, result)); 13828bf1fadSJohn Baldwin } 13928bf1fadSJohn Baldwin 14028bf1fadSJohn Baldwin #if 0 14128bf1fadSJohn Baldwin /* 14228bf1fadSJohn Baldwin * PCI power manangement 14328bf1fadSJohn Baldwin */ 14428bf1fadSJohn Baldwin static int 14528bf1fadSJohn Baldwin acpi_pci_set_powerstate_method(device_t dev, device_t child, int state) 14628bf1fadSJohn Baldwin { 14728bf1fadSJohn Baldwin /* XXX: TODO */ 14828bf1fadSJohn Baldwin return (ENXIO); 14928bf1fadSJohn Baldwin } 15028bf1fadSJohn Baldwin 15128bf1fadSJohn Baldwin static int 15228bf1fadSJohn Baldwin acpi_pci_get_powerstate_method(device_t dev, device_t child) 15328bf1fadSJohn Baldwin { 15428bf1fadSJohn Baldwin /* XXX: TODO */ 15528bf1fadSJohn Baldwin return (ENXIO); 15628bf1fadSJohn Baldwin } 15728bf1fadSJohn Baldwin #endif 15828bf1fadSJohn Baldwin 15928bf1fadSJohn Baldwin static ACPI_STATUS 16028bf1fadSJohn Baldwin acpi_pci_save_handle(ACPI_HANDLE handle, UINT32 level, void *context, 16128bf1fadSJohn Baldwin void **status) 16228bf1fadSJohn Baldwin { 16328bf1fadSJohn Baldwin struct acpi_pci_devinfo *dinfo; 16428bf1fadSJohn Baldwin device_t *devlist; 16528bf1fadSJohn Baldwin int devcount, i, func, slot; 16628bf1fadSJohn Baldwin UINT32 address; 16728bf1fadSJohn Baldwin 16828bf1fadSJohn Baldwin ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 16928bf1fadSJohn Baldwin 17028bf1fadSJohn Baldwin if (ACPI_FAILURE(acpi_EvaluateInteger(handle, "_ADR", &address))) 17128bf1fadSJohn Baldwin return_ACPI_STATUS(AE_OK); 17228bf1fadSJohn Baldwin slot = address >> 16; 17328bf1fadSJohn Baldwin func = address & 0xffff; 17428bf1fadSJohn Baldwin if (device_get_children((device_t)context, &devlist, &devcount) != 0) 17528bf1fadSJohn Baldwin return_ACPI_STATUS(AE_OK); 17628bf1fadSJohn Baldwin for (i = 0; i < devcount; i++) { 17728bf1fadSJohn Baldwin dinfo = device_get_ivars(devlist[i]); 17828bf1fadSJohn Baldwin if (dinfo->ap_dinfo.cfg.func == func && 17928bf1fadSJohn Baldwin dinfo->ap_dinfo.cfg.slot == slot) { 18028bf1fadSJohn Baldwin dinfo->ap_handle = handle; 18128bf1fadSJohn Baldwin free(devlist, M_TEMP); 18228bf1fadSJohn Baldwin return_ACPI_STATUS(AE_OK); 18328bf1fadSJohn Baldwin } 18428bf1fadSJohn Baldwin } 18528bf1fadSJohn Baldwin free(devlist, M_TEMP); 18628bf1fadSJohn Baldwin return_ACPI_STATUS(AE_OK); 18728bf1fadSJohn Baldwin } 18828bf1fadSJohn Baldwin 18928bf1fadSJohn Baldwin static int 19028bf1fadSJohn Baldwin acpi_pci_probe(device_t dev) 19128bf1fadSJohn Baldwin { 19228bf1fadSJohn Baldwin 19328bf1fadSJohn Baldwin if (pcib_get_bus(dev) < 0) 19428bf1fadSJohn Baldwin return (ENXIO); 19528bf1fadSJohn Baldwin 19628bf1fadSJohn Baldwin device_set_desc(dev, "ACPI PCI bus"); 19728bf1fadSJohn Baldwin 19828bf1fadSJohn Baldwin if (acpi_get_handle(dev) == NULL) 19928bf1fadSJohn Baldwin return (ENXIO); 20028bf1fadSJohn Baldwin return (0); 20128bf1fadSJohn Baldwin } 20228bf1fadSJohn Baldwin 20328bf1fadSJohn Baldwin static int 20428bf1fadSJohn Baldwin acpi_pci_attach(device_t dev) 20528bf1fadSJohn Baldwin { 20628bf1fadSJohn Baldwin int busno; 20728bf1fadSJohn Baldwin 20828bf1fadSJohn Baldwin /* 20928bf1fadSJohn Baldwin * Since there can be multiple independantly numbered PCI 21028bf1fadSJohn Baldwin * busses on some large alpha systems, we can't use the unit 21128bf1fadSJohn Baldwin * number to decide what bus we are probing. We ask the parent 21228bf1fadSJohn Baldwin * pcib what our bus number is. 21328bf1fadSJohn Baldwin */ 21428bf1fadSJohn Baldwin busno = pcib_get_bus(dev); 21528bf1fadSJohn Baldwin if (bootverbose) 21628bf1fadSJohn Baldwin device_printf(dev, "physical bus=%d\n", busno); 21728bf1fadSJohn Baldwin 21828bf1fadSJohn Baldwin /* 21928bf1fadSJohn Baldwin * First, PCI devices are added as in the normal PCI bus driver. 22028bf1fadSJohn Baldwin * Afterwards, the ACPI namespace under the bridge driver is 22128bf1fadSJohn Baldwin * walked to save ACPI handles to all the devices that appear in 22228bf1fadSJohn Baldwin * the ACPI namespace as immediate descendants of the bridge. 22328bf1fadSJohn Baldwin * 22428bf1fadSJohn Baldwin * XXX: Sometimes PCI devices show up in the ACPI namespace that 22528bf1fadSJohn Baldwin * pci_add_children() doesn't find. We currently just ignore 22628bf1fadSJohn Baldwin * these devices. 22728bf1fadSJohn Baldwin */ 22828bf1fadSJohn Baldwin pci_add_children(dev, busno, sizeof(struct acpi_pci_devinfo)); 22928bf1fadSJohn Baldwin 23028bf1fadSJohn Baldwin (void) AcpiWalkNamespace(ACPI_TYPE_DEVICE, acpi_get_handle(dev), 1, 23128bf1fadSJohn Baldwin acpi_pci_save_handle, dev, NULL); 23228bf1fadSJohn Baldwin 23328bf1fadSJohn Baldwin pci_load_vendor_data(); 23428bf1fadSJohn Baldwin return (bus_generic_attach(dev)); 23528bf1fadSJohn Baldwin } 236