158 lines
4.8 KiB
C
158 lines
4.8 KiB
C
/* $NetBSD: prep_pciconf_indirect.c,v 1.1 2002/02/24 13:19:08 kleink Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
|
|
* Copyright (c) 1994 Charles M. Hannum. 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Charles M. Hannum.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
|
|
*/
|
|
|
|
/*
|
|
* Machine-specific functions for PCI autoconfiguration.
|
|
*
|
|
* On PCs, there are two methods of generating PCI configuration cycles.
|
|
* We try to detect the appropriate mechanism for this machine and set
|
|
* up a few function pointers to access the correct method directly.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/time.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <uvm/uvm_extern.h>
|
|
|
|
#define _POWERPC_BUS_DMA_PRIVATE
|
|
#include <machine/bus.h>
|
|
#include <machine/intr.h>
|
|
#include <machine/platform.h>
|
|
|
|
#include <dev/isa/isavar.h>
|
|
#include <dev/pci/pcivar.h>
|
|
#include <dev/pci/pcireg.h>
|
|
#include <dev/pci/pcidevs.h>
|
|
|
|
#define PCI_MODE1_ENABLE 0x80000000UL
|
|
#define PCI_MODE1_ADDRESS_REG (PREP_BUS_SPACE_IO + 0xcf8)
|
|
#define PCI_MODE1_DATA_REG (PREP_BUS_SPACE_IO + 0xcfc)
|
|
|
|
void prep_pci_indirect_attach_hook(struct device *, struct device *,
|
|
struct pcibus_attach_args *);
|
|
pcitag_t prep_pci_indirect_make_tag(void *, int, int, int);
|
|
pcireg_t prep_pci_indirect_conf_read(void *, pcitag_t, int);
|
|
void prep_pci_indirect_conf_write(void *, pcitag_t, int, pcireg_t);
|
|
void prep_pci_indirect_decompose_tag(void *, pcitag_t, int *, int *, int *);
|
|
|
|
void
|
|
prep_pci_get_chipset_tag_indirect(pci_chipset_tag_t pc)
|
|
{
|
|
|
|
pc->pc_conf_v = NULL;
|
|
|
|
pc->pc_attach_hook = prep_pci_indirect_attach_hook;
|
|
pc->pc_bus_maxdevs = prep_pci_bus_maxdevs;
|
|
pc->pc_make_tag = prep_pci_indirect_make_tag;
|
|
pc->pc_conf_read = prep_pci_indirect_conf_read;
|
|
pc->pc_conf_write = prep_pci_indirect_conf_write;
|
|
|
|
pc->pc_intr_v = NULL;
|
|
|
|
pc->pc_intr_map = prep_pci_intr_map;
|
|
pc->pc_intr_string = prep_pci_intr_string;
|
|
pc->pc_intr_evcnt = prep_pci_intr_evcnt;
|
|
pc->pc_intr_establish = prep_pci_intr_establish;
|
|
pc->pc_intr_disestablish = prep_pci_intr_disestablish;
|
|
|
|
pc->pc_conf_interrupt = prep_pci_conf_interrupt;
|
|
pc->pc_decompose_tag = prep_pci_indirect_decompose_tag;
|
|
pc->pc_conf_hook = prep_pci_conf_hook;
|
|
}
|
|
|
|
void
|
|
prep_pci_indirect_attach_hook(struct device *parent, struct device *self,
|
|
struct pcibus_attach_args *pba)
|
|
{
|
|
|
|
if (pba->pba_bus == 0)
|
|
printf(": indirect configuration space access");
|
|
}
|
|
|
|
pcitag_t
|
|
prep_pci_indirect_make_tag(void *v, int bus, int device, int function)
|
|
{
|
|
pcitag_t tag;
|
|
|
|
if (bus >= 256 || device >= 32 || function >= 8)
|
|
panic("pci_make_tag: bad request");
|
|
|
|
tag = PCI_MODE1_ENABLE |
|
|
(bus << 16) | (device << 11) | (function << 8);
|
|
return tag;
|
|
}
|
|
|
|
void
|
|
prep_pci_indirect_decompose_tag(void *v, pcitag_t tag, int *bp, int *dp,
|
|
int *fp)
|
|
{
|
|
|
|
if (bp != NULL)
|
|
*bp = (tag >> 16) & 0xff;
|
|
if (dp != NULL)
|
|
*dp = (tag >> 11) & 0x1f;
|
|
if (fp != NULL)
|
|
*fp = (tag >> 8) & 0x7;
|
|
return;
|
|
}
|
|
|
|
pcireg_t
|
|
prep_pci_indirect_conf_read(void *v, pcitag_t tag, int reg)
|
|
{
|
|
pcireg_t data;
|
|
int s;
|
|
|
|
s = splhigh();
|
|
out32rb(PCI_MODE1_ADDRESS_REG, tag | reg);
|
|
data = in32rb(PCI_MODE1_DATA_REG);
|
|
out32rb(PCI_MODE1_ADDRESS_REG, 0);
|
|
splx(s);
|
|
|
|
return data;
|
|
}
|
|
|
|
void
|
|
prep_pci_indirect_conf_write(void *v, pcitag_t tag, int reg, pcireg_t data)
|
|
{
|
|
int s;
|
|
|
|
s = splhigh();
|
|
out32rb(PCI_MODE1_ADDRESS_REG, tag | reg);
|
|
out32rb(PCI_MODE1_DATA_REG, data);
|
|
out32rb(PCI_MODE1_ADDRESS_REG, 0);
|
|
splx(s);
|
|
}
|