1 /* $OpenBSD: acpimcfg.c,v 1.4 2018/08/19 08:23:47 kettenis Exp $ */ 2 /* 3 * Copyright (c) 2010 Mark Kettenis <kettenis@openbsd.org> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include <sys/param.h> 19 #include <sys/systm.h> 20 #include <sys/device.h> 21 22 #include <dev/acpi/acpireg.h> 23 #include <dev/acpi/acpivar.h> 24 #include <dev/pci/pcivar.h> 25 26 int acpimcfg_match(struct device *, void *, void *); 27 void acpimcfg_attach(struct device *, struct device *, void *); 28 29 struct cfattach acpimcfg_ca = { 30 sizeof(struct device), acpimcfg_match, acpimcfg_attach 31 }; 32 33 struct cfdriver acpimcfg_cd = { 34 NULL, "acpimcfg", DV_DULL 35 }; 36 37 int 38 acpimcfg_match(struct device *parent, void *match, void *aux) 39 { 40 struct acpi_attach_args *aaa = aux; 41 struct acpi_table_header *hdr; 42 43 /* 44 * If we do not have a table, it is not us 45 */ 46 if (aaa->aaa_table == NULL) 47 return (0); 48 49 /* 50 * If it is an MCFG table, we can attach 51 */ 52 hdr = (struct acpi_table_header *)aaa->aaa_table; 53 if (memcmp(hdr->signature, MCFG_SIG, sizeof(MCFG_SIG) - 1) != 0) 54 return (0); 55 56 return (1); 57 } 58 59 void 60 acpimcfg_attach(struct device *parent, struct device *self, void *aux) 61 { 62 struct acpi_attach_args *aaa = aux; 63 struct acpi_mcfg *mcfg = (struct acpi_mcfg *)aaa->aaa_table; 64 caddr_t addr = (caddr_t)(mcfg + 1); 65 66 printf("\n"); 67 68 while (addr < (caddr_t)mcfg + mcfg->hdr.length) { 69 struct acpi_mcfg_entry *entry = (struct acpi_mcfg_entry *)addr; 70 71 printf("%s: addr 0x%llx, bus %d-%d\n", self->dv_xname, 72 entry->base_address, entry->min_bus_number, entry->max_bus_number); 73 74 pci_mcfg_init(aaa->aaa_memt, entry->base_address, 75 entry->segment, entry->min_bus_number, entry->max_bus_number); 76 addr += sizeof(struct acpi_mcfg_entry); 77 } 78 } 79