/* $OpenBSD: mpbios_intr_fixup.c,v 1.5 2006/07/17 22:29:53 deraadt Exp $ */
/*
* Copyright (c) 2006 Mark Kettenis
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <machine/i82093var.h>
#include <machine/mpbiosvar.h>
void mpbios_pin_fixup(int, int, int, int);
const struct mpbios_icu_table *mpbios_icu_lookup(pcireg_t);
void via8237_mpbios_fixup(pci_chipset_tag_t, pcitag_t);
void nforce4_mpbios_fixup(pci_chipset_tag_t, pcitag_t);
void mcp04_mpbios_fixup(pci_chipset_tag_t, pcitag_t);
const struct mpbios_icu_table {
pci_vendor_id_t mpit_vendor;
pci_product_id_t mpit_product;
void (*mpit_mpbios_fixup)(pci_chipset_tag_t, pcitag_t);
} mpbios_icu_table[] = {
{ PCI_VENDOR_VIATECH, PCI_PRODUCT_VIATECH_VT8237_ISA,
via8237_mpbios_fixup },
{ PCI_VENDOR_NVIDIA, PCI_PRODUCT_NVIDIA_NFORCE4_ISA,
nforce4_mpbios_fixup },
{ PCI_VENDOR_NVIDIA, PCI_PRODUCT_NVIDIA_NFORCE4_ISA2,
nforce4_mpbios_fixup },
{ PCI_VENDOR_NVIDIA, PCI_PRODUCT_NVIDIA_MCP04_ISA,
mcp04_mpbios_fixup }
};
const struct mpbios_icu_table *
mpbios_icu_lookup(pcireg_t id)
{
const struct mpbios_icu_table *mpit;
for (mpit = mpbios_icu_table; mpit->mpit_mpbios_fixup != NULL; mpit++)
if (PCI_VENDOR(id) == mpit->mpit_vendor &&
PCI_PRODUCT(id) == mpit->mpit_product)
return (mpit);
return (NULL);
}
/*
* NVIDIA nForce4 PCI-ISA bridge.
*/
#define NFORCE4_PNPIRQ1 0x7c
#define NFORCE4_PNPIRQ2 0x80
#define NFORCE4_USB2_SHIFT 12
#define NFORCE4_USB2_MASK (0xf << NFORCE4_USB2_SHIFT)
#define NFORCE4_SATA1_SHIFT 28
#define NFORCE4_SATA1_MASK (0xf << NFORCE4_SATA1_SHIFT)
#define NFORCE4_SATA2_SHIFT 24
#define NFORCE4_SATA2_MASK (0xf << NFORCE4_SATA2_SHIFT)
#define NFORCE4_PNPIRQ3 0x84
#define NFORCE4_USB1_SHIFT 0
#define NFORCE4_USB1_MASK (0xf << NFORCE4_USB1_SHIFT)
#define NFORCE4_LAN_SHIFT 8
#define NFORCE4_LAN_MASK (0xf << NFORCE4_LAN_SHIFT)
void
nforce4_mpbios_fixup(pci_chipset_tag_t pc, pcitag_t tag)
{
pcireg_t reg;
int bus, pin;
pci_decompose_tag (pc, tag, &bus, NULL, NULL);
reg = pci_conf_read(pc, tag, NFORCE4_PNPIRQ2);
pin = (reg & NFORCE4_USB2_MASK) >> NFORCE4_USB2_SHIFT;
if (pin != 0)
mpbios_pin_fixup(bus, 2, PCI_INTERRUPT_PIN_B, pin);
pin = (reg & NFORCE4_SATA1_MASK) >> NFORCE4_SATA1_SHIFT;
if (pin != 0)
mpbios_pin_fixup(bus, 7, PCI_INTERRUPT_PIN_A, pin);
pin = (reg & NFORCE4_SATA2_MASK) >> NFORCE4_SATA2_SHIFT;
if (pin != 0)
mpbios_pin_fixup(bus, 8, PCI_INTERRUPT_PIN_A, pin);
reg = pci_conf_read(pc, tag, NFORCE4_PNPIRQ3);
pin = (reg & NFORCE4_USB1_MASK) >> NFORCE4_USB1_SHIFT;
if (pin != 0)
mpbios_pin_fixup(bus, 2, PCI_INTERRUPT_PIN_A, pin);
pin = (reg & NFORCE4_LAN_MASK) >> NFORCE4_LAN_SHIFT;
if (pin != 0)
mpbios_pin_fixup(bus, 10, PCI_INTERRUPT_PIN_A, pin);
}
/*
* NVIDIA MCP04 PCI-ISA bridge.
*/
void
mcp04_mpbios_fixup(pci_chipset_tag_t pc, pcitag_t tag)
{
pcireg_t reg;
int bus, pin;
pci_decompose_tag (pc, tag, &bus, NULL, NULL);
reg = pci_conf_read(pc, tag, NFORCE4_PNPIRQ2);
pin = (reg & NFORCE4_SATA1_MASK) >> NFORCE4_SATA1_SHIFT;
if (pin != 0)
mpbios_pin_fixup(bus, 16, PCI_INTERRUPT_PIN_A, pin);
pin = (reg & NFORCE4_SATA2_MASK) >> NFORCE4_SATA2_SHIFT;
if (pin != 0)
mpbios_pin_fixup(bus, 17, PCI_INTERRUPT_PIN_A, pin);
}
/*
* VIA VT8237 PCI-ISA bridge.
*/
void
via8237_mpbios_fixup(pci_chipset_tag_t pc, pcitag_t tag)
{
int bus;
pci_decompose_tag (pc, tag, &bus, NULL, NULL);
/* SATA is hardwired to APIC pin 20. */
mpbios_pin_fixup(bus, 15, 2, 20);
}
void
mpbios_pin_fixup(int bus, int dev, int rawpin, int pin)
{
struct mp_bus *mpb = &mp_busses[bus];
struct mp_intr_map *mip;
for (mip = mpb->mb_intrs; mip != NULL; mip = mip->next) {
if (mip->bus_pin == ((dev << 2) | (rawpin - 1)) &&
mip->ioapic_pin != pin) {
if (mp_verbose) {
printf("%s: int%d attached to %s",
mip->ioapic->sc_pic.pic_dev.dv_xname,
pin, mpb->mb_name);
if (mpb->mb_idx != -1)
printf("%d", mpb->mb_idx);
(*(mpb->mb_intr_print))(mip->bus_pin);
printf(" (fixup)\n");
}
mip->ioapic_pin = pin;
mip->ioapic_ih &= ~APIC_INT_PIN_MASK;
mip->ioapic_ih |= (pin << APIC_INT_PIN_SHIFT);
if (mip->ioapic->sc_pins[pin].ip_map == NULL)
mip->ioapic->sc_pins[pin].ip_map = mip;
}
}
}
void
mpbios_intr_fixup(void)
{
const struct mpbios_icu_table *mpit = NULL;
pci_chipset_tag_t pc = NULL;
pcitag_t icutag;
int device, maxdevs = pci_bus_maxdevs(pc, 0);
/* Search configuration space for a known interrupt router. */
for (device = 0; device < maxdevs; device++) {
const struct pci_quirkdata *qd;
int function, nfuncs;
pcireg_t icuid;
pcireg_t bhlcr;
icutag = pci_make_tag(pc, 0, device, 0);
icuid = pci_conf_read(pc, icutag, PCI_ID_REG);
/* Invalid vendor ID value? */
if (PCI_VENDOR(icuid) == PCI_VENDOR_INVALID)
continue;
qd = pci_lookup_quirkdata(PCI_VENDOR(icuid),
PCI_PRODUCT(icuid));
bhlcr = pci_conf_read(pc, icutag, PCI_BHLC_REG);
if (PCI_HDRTYPE_MULTIFN(bhlcr) || (qd != NULL &&
(qd->quirks & PCI_QUIRK_MULTIFUNCTION) != 0))
nfuncs = 8;
else
nfuncs = 1;
for (function = 0; function < nfuncs; function++) {
icutag = pci_make_tag(pc, 0, device, function);
icuid = pci_conf_read(pc, icutag, PCI_ID_REG);
/* Invalid vendor ID value? */
if (PCI_VENDOR(icuid) == PCI_VENDOR_INVALID)
continue;
if ((mpit = mpbios_icu_lookup(icuid)))
break;
}
if (mpit != NULL)
break;
}
if (mpit)
mpit->mpit_mpbios_fixup(pc, icutag);
}