/*- * Copyright (c) 1998 Michael Smith * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD: src/sys/boot/i386/libi386/biospci.c,v 1.4 2003/08/25 23:28:31 obrien Exp $ * $DragonFly: src/sys/boot/i386/libi386/Attic/biospci.c,v 1.3 2003/11/10 06:08:36 dillon Exp $ */ /* * PnP enumerator using the PCI BIOS. */ #include #include #include #include #include /* * Stupid PCI BIOS interface doesn't let you simply enumerate everything * that's there, instead you have to ask it if it has something. * * So we have to scan by class code, subclass code and sometimes programming * interface. */ struct pci_progif { int pi_code; const char *pi_name; }; static struct pci_progif progif_null[] = { {0x0, NULL}, {-1, NULL} }; static struct pci_progif progif_display[] = { {0x0, "VGA"}, {0x1, "8514"}, {-1, NULL} }; static struct pci_progif progif_ide[] = { {0x00, NULL}, {0x01, NULL}, {0x02, NULL}, {0x03, NULL}, {0x04, NULL}, {0x05, NULL}, {0x06, NULL}, {0x07, NULL}, {0x08, NULL}, {0x09, NULL}, {0x0a, NULL}, {0x0b, NULL}, {0x0c, NULL}, {0x0d, NULL}, {0x0e, NULL}, {0x0f, NULL}, {0x80, NULL}, {0x81, NULL}, {0x82, NULL}, {0x83, NULL}, {0x84, NULL}, {0x85, NULL}, {0x86, NULL}, {0x87, NULL}, {0x88, NULL}, {0x89, NULL}, {0x8a, NULL}, {0x8b, NULL}, {0x8c, NULL}, {0x8d, NULL}, {0x8e, NULL}, {0x8f, NULL}, {-1, NULL} }; static struct pci_progif progif_serial[] = { {0x0, "8250"}, {0x1, "16450"}, {0x2, "16550"}, {-1, NULL} }; static struct pci_progif progif_parallel[] = { {0x0, "Standard"}, {0x1, "Bidirectional"}, {0x2, "ECP"}, {-1, NULL} }; struct pci_subclass { int ps_subclass; const char *ps_name; struct pci_progif *ps_progif; /* if set, use for programming interface value(s) */ }; static struct pci_subclass subclass_old[] = { {0x0, "Old non-VGA", progif_null}, {0x1, "Old VGA", progif_null}, {-1, NULL, NULL} }; static struct pci_subclass subclass_mass[] = { {0x0, "SCSI", progif_null}, {0x1, "IDE", progif_ide}, {0x2, "Floppy disk", progif_null}, {0x3, "IPI", progif_null}, {0x4, "RAID", progif_null}, {0x80, "mass storage", progif_null}, {-1, NULL, NULL} }; static struct pci_subclass subclass_net[] = { {0x0, "Ethernet", progif_null}, {0x1, "Token ring", progif_null}, {0x2, "FDDI", progif_null}, {0x3, "ATM", progif_null}, {0x80, "network", progif_null}, {-1, NULL, NULL} }; static struct pci_subclass subclass_display[] = { {0x0, NULL, progif_display}, {0x1, "XGA", progif_null}, {0x80, "other", progif_null}, {-1, NULL, NULL} }; static struct pci_subclass subclass_comms[] = { {0x0, "serial", progif_serial}, {0x1, "parallel", progif_parallel}, {0x80, "communications", progif_null}, {-1, NULL, NULL} }; static struct pci_subclass subclass_serial[] = { {0x0, "Firewire", progif_null}, {0x1, "ACCESS.bus", progif_null}, {0x2, "SSA", progif_null}, {0x3, "USB", progif_null}, {0x4, "Fibrechannel", progif_null}, {-1, NULL, NULL} }; static struct pci_class { int pc_class; const char *pc_name; struct pci_subclass *pc_subclass; } pci_classes[] = { {0x0, "device", subclass_old}, {0x1, "controller", subclass_mass}, {0x2, "controller", subclass_net}, {0x3, "display", subclass_display}, {0x7, "controller", subclass_comms}, {0xc, "controller", subclass_serial}, {-1, NULL, NULL} }; static void biospci_enumerate(void); static void biospci_addinfo(int devid, struct pci_class *pc, struct pci_subclass *psc, struct pci_progif *ppi); static int biospci_version; static int biospci_hwcap; struct pnphandler biospcihandler = { "PCI BIOS", biospci_enumerate }; static void biospci_enumerate(void) { int device_index, locator, devid; struct pci_class *pc; struct pci_subclass *psc; struct pci_progif *ppi; /* Find the PCI BIOS */ v86.ctl = V86_FLAGS; v86.addr = 0x1a; v86.eax = 0xb101; v86.edi = 0x0; v86int(); /* Check for OK response */ if ((v86.efl & 1) || ((v86.eax & 0xff00) != 0) || (v86.edx != 0x20494350)) return; biospci_version = v86.ebx & 0xffff; biospci_hwcap = v86.eax & 0xff; #if 0 printf("PCI BIOS %d.%d%s%s\n", bcd2bin((biospci_version >> 8) & 0xf), bcd2bin(biospci_version & 0xf), (biospci_hwcap & 1) ? " config1" : "", (biospci_hwcap & 2) ? " config2" : ""); #endif /* Iterate over known classes */ for (pc = pci_classes; pc->pc_class >= 0; pc++) { /* Iterate over subclasses */ for (psc = pc->pc_subclass; psc->ps_subclass >= 0; psc++) { /* Iterate over programming interfaces */ for (ppi = psc->ps_progif; ppi->pi_code >= 0; ppi++) { /* Scan for matches */ for (device_index = 0; ; device_index++) { /* Look for a match */ v86.ctl = V86_FLAGS; v86.addr = 0x1a; v86.eax = 0xb103; v86.ecx = (pc->pc_class << 16) + (psc->ps_subclass << 8) + ppi->pi_code; v86.esi = device_index; v86int(); /* error/end of matches */ if ((v86.efl & 1) || (v86.eax & 0xff00)) break; /* Got something */ locator = v86.ebx; /* Read the device identifier from the nominated device */ v86.ctl = V86_FLAGS; v86.addr = 0x1a; v86.eax = 0xb10a; v86.ebx = locator; v86.edi = 0x0; v86int(); /* error */ if ((v86.efl & 1) || (v86.eax & 0xff00)) break; /* We have the device ID, create a PnP object and save everything */ devid = v86.ecx; biospci_addinfo(devid, pc, psc, ppi); } } } } } static void biospci_addinfo(int devid, struct pci_class *pc, struct pci_subclass *psc, struct pci_progif *ppi) { struct pnpinfo *pi; char desc[80]; /* build the description */ desc[0] = 0; if (ppi->pi_name != NULL) { strcat(desc, ppi->pi_name); strcat(desc, " "); } if (psc->ps_name != NULL) { strcat(desc, psc->ps_name); strcat(desc, " "); } if (pc->pc_name != NULL) strcat(desc, pc->pc_name); pi = pnp_allocinfo(); pi->pi_desc = strdup(desc); sprintf(desc,"0x%08x", devid); pnp_addident(pi, desc); pnp_addinfo(pi); }