From a1c0b1c5c5b71fd0ee0f478a0ca7de6c8e6c5094 Mon Sep 17 00:00:00 2001 From: Mike Smith Date: Fri, 23 Oct 1998 22:29:08 +0000 Subject: [PATCH] PnP enumerator using the PCI BIOS. This is needlessly complex due to the lack of a simple "enumerate all PCI devices" function. --- sys/boot/i386/libi386/Makefile | 8 +- sys/boot/i386/libi386/biospci.c | 294 ++++++++++++++++++++++++++++++++ sys/boot/i386/libi386/biospnp.c | 4 +- 3 files changed, 300 insertions(+), 6 deletions(-) create mode 100644 sys/boot/i386/libi386/biospci.c diff --git a/sys/boot/i386/libi386/Makefile b/sys/boot/i386/libi386/Makefile index 30dad0411d19..ae798e4bbcde 100644 --- a/sys/boot/i386/libi386/Makefile +++ b/sys/boot/i386/libi386/Makefile @@ -1,4 +1,4 @@ -# $Id: Makefile,v 1.9 1998/10/21 20:07:57 msmith Exp $ +# $Id: Makefile,v 1.10 1998/10/22 20:23:15 msmith Exp $ # LIB= i386 NOPIC= @@ -6,9 +6,9 @@ NOPROFILE= INTERNALLIB= true INTERNALSTATICLIB= true -SRCS= aout_freebsd.c biosdisk.c biosmem.c bootinfo.c comconsole.c \ - devicename.c elf_freebsd.c gatea20.c i386_copy.c i386_module.c \ - biospnp.c time.c vidconsole.c +SRCS= aout_freebsd.c biosdisk.c biosmem.c biospnp.c biospci.c \ + bootinfo.c comconsole.c devicename.c elf_freebsd.c gatea20.c \ + i386_copy.c i386_module.c time.c vidconsole.c CFLAGS+= -I${.CURDIR}/../../common -I${.CURDIR}/../btx/lib \ -I${.CURDIR}/../../.. -I. diff --git a/sys/boot/i386/libi386/biospci.c b/sys/boot/i386/libi386/biospci.c new file mode 100644 index 000000000000..92f4fd28c297 --- /dev/null +++ b/sys/boot/i386/libi386/biospci.c @@ -0,0 +1,294 @@ +/*- + * 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. + * + * $Id$ + */ + +/* + * PnP enumerator using the PCI BIOS. + */ + +#include +#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; + 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; + 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; + 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 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 (index = 0; ; 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 = 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); +} diff --git a/sys/boot/i386/libi386/biospnp.c b/sys/boot/i386/libi386/biospnp.c index 2cf5fb4a2809..d3f3611e7798 100644 --- a/sys/boot/i386/libi386/biospnp.c +++ b/sys/boot/i386/libi386/biospnp.c @@ -23,11 +23,11 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id$ + * $Id: biospnp.c,v 1.1 1998/10/22 20:25:06 msmith Exp $ */ /* - * PnP BIOS enumerator, uses ISA PnP enumerator for fallback. + * PnP BIOS enumerator. */ #include