0dbe859d2f
start a new file that will hold utility APIs used by various Host-PCI bridge drivers and drivers that provide PCI domains.
131 lines
3.7 KiB
C
131 lines
3.7 KiB
C
/*-
|
|
* Copyright (c) 2011 Advanced Computing Technologies LLC
|
|
* Written by: John H. Baldwin <jhb@FreeBSD.org>
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
/*
|
|
* Support APIs for Host to PCI bridge drivers and drivers that
|
|
* provide PCI domains.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/rman.h>
|
|
|
|
#include <dev/pci/pcireg.h>
|
|
#include <dev/pci/pcivar.h>
|
|
#include <dev/pci/pcib_private.h>
|
|
|
|
/*
|
|
* Try to read the bus number of a host-PCI bridge using appropriate config
|
|
* registers.
|
|
*/
|
|
int
|
|
host_pcib_get_busno(pci_read_config_fn read_config, int bus, int slot, int func,
|
|
uint8_t *busnum)
|
|
{
|
|
uint32_t id;
|
|
|
|
id = read_config(bus, slot, func, PCIR_DEVVENDOR, 4);
|
|
if (id == 0xffffffff)
|
|
return (0);
|
|
|
|
switch (id) {
|
|
case 0x12258086:
|
|
/* Intel 824?? */
|
|
/* XXX This is a guess */
|
|
/* *busnum = read_config(bus, slot, func, 0x41, 1); */
|
|
*busnum = bus;
|
|
break;
|
|
case 0x84c48086:
|
|
/* Intel 82454KX/GX (Orion) */
|
|
*busnum = read_config(bus, slot, func, 0x4a, 1);
|
|
break;
|
|
case 0x84ca8086:
|
|
/*
|
|
* For the 450nx chipset, there is a whole bundle of
|
|
* things pretending to be host bridges. The MIOC will
|
|
* be seen first and isn't really a pci bridge (the
|
|
* actual busses are attached to the PXB's). We need to
|
|
* read the registers of the MIOC to figure out the
|
|
* bus numbers for the PXB channels.
|
|
*
|
|
* Since the MIOC doesn't have a pci bus attached, we
|
|
* pretend it wasn't there.
|
|
*/
|
|
return (0);
|
|
case 0x84cb8086:
|
|
switch (slot) {
|
|
case 0x12:
|
|
/* Intel 82454NX PXB#0, Bus#A */
|
|
*busnum = read_config(bus, 0x10, func, 0xd0, 1);
|
|
break;
|
|
case 0x13:
|
|
/* Intel 82454NX PXB#0, Bus#B */
|
|
*busnum = read_config(bus, 0x10, func, 0xd1, 1) + 1;
|
|
break;
|
|
case 0x14:
|
|
/* Intel 82454NX PXB#1, Bus#A */
|
|
*busnum = read_config(bus, 0x10, func, 0xd3, 1);
|
|
break;
|
|
case 0x15:
|
|
/* Intel 82454NX PXB#1, Bus#B */
|
|
*busnum = read_config(bus, 0x10, func, 0xd4, 1) + 1;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
/* ServerWorks -- vendor 0x1166 */
|
|
case 0x00051166:
|
|
case 0x00061166:
|
|
case 0x00081166:
|
|
case 0x00091166:
|
|
case 0x00101166:
|
|
case 0x00111166:
|
|
case 0x00171166:
|
|
case 0x01011166:
|
|
case 0x010f1014:
|
|
case 0x01101166:
|
|
case 0x02011166:
|
|
case 0x02251166:
|
|
case 0x03021014:
|
|
*busnum = read_config(bus, slot, func, 0x44, 1);
|
|
break;
|
|
|
|
/* Compaq/HP -- vendor 0x0e11 */
|
|
case 0x60100e11:
|
|
*busnum = read_config(bus, slot, func, 0xc8, 1);
|
|
break;
|
|
default:
|
|
/* Don't know how to read bus number. */
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|