NetBSD-5.0.2/sys/arch/powerpc/ibm4xx/dev/ibm405gp.c
/* $NetBSD: ibm405gp.c,v 1.4 2005/12/11 12:18:42 christos Exp $ */
/*
* Copyright 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc.
*
* 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 for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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>
__KERNEL_RCSID(0, "$NetBSD: ibm405gp.c,v 1.4 2005/12/11 12:18:42 christos Exp $");
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <sys/extent.h>
#include <machine/bus.h>
#include <dev/pci/pcivar.h>
#include <powerpc/ibm4xx/ibm405gp.h>
#include <powerpc/ibm4xx/dev/pcicreg.h>
static struct powerpc_bus_space pcicfg_tag = {
_BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE,
IBM405GP_PCIL0_BASE, 0x0, 0x40
};
static char ex_storage[EXTENT_FIXED_STORAGE_SIZE(1)]
__attribute__((aligned(8)));
static bus_space_tag_t pcicfg_iot = &pcicfg_tag;
static bus_space_handle_t pcicfg_ioh = 0;
#define PCI0_MEM_BASE 0x80000000
static void setup_pcicfg_window(void)
{
if (pcicfg_ioh)
return;
if (bus_space_init(&pcicfg_tag,
"pcicfg", ex_storage, sizeof(ex_storage)) ||
bus_space_map(pcicfg_iot, 0, 0x40 , 0, &pcicfg_ioh))
panic("Cannot map PCI configuration registers");
}
/*
* Setup proper Local<->PCI mapping
* PCI memory window: 256M @ PCI0MEMBASE with direct memory translation
*/
void ibm4xx_setup_pci(void)
{
pcitag_t tag;
setup_pcicfg_window();
/* Disable all three memory mappers */
bus_space_write_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM0MA, 0x00000000); /* disabled */
bus_space_write_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM1MA, 0x00000000); /* disabled */
bus_space_write_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM2MA, 0x00000000); /* disabled */
bus_space_write_4(pcicfg_iot, pcicfg_ioh, PCIL_PTM1MS, 0x00000000); /* Can't really disable PTM1. */
bus_space_write_4(pcicfg_iot, pcicfg_ioh, PCIL_PTM2MS, 0x00000000); /* disabled */
/* Setup memory map #0 */
bus_space_write_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM0MA, 0xF0000001); /* 256M non-prefetchable, enabled */
bus_space_write_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM0LA, PCI0_MEM_BASE);
bus_space_write_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM0PCILA, PCI0_MEM_BASE);
bus_space_write_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM0PCIHA, 0);
/* Configure PCI bridge */
tag = pci_make_tag(0, 0, 0, 0);
// x = pci_conf_read(0, tag, PCI0_CMD); /* Read PCI command register */
// pci_conf_write(0, tag, PCI0_CMD, x | MA | ME); /* enable bus mastering and memory space */
bus_space_write_4(pcicfg_iot, pcicfg_ioh, PCIL_PTM1MS, 0xF0000001); /* Enable PTM1 */
bus_space_write_4(pcicfg_iot, pcicfg_ioh, PCIL_PTM1LA, 0);
pci_conf_write(0, tag, PCIC_PTM1BAR, 0); /* Set up proper PCI->Local address base. Always enabled */
pci_conf_write(0, tag, PCIC_PTM2BAR, 0);
}
void ibm4xx_show_pci_map(void)
{
paddr_t la, lm, pl, ph;
pcitag_t tag;
setup_pcicfg_window();
printf("Local -> PCI map\n");
la = bus_space_read_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM0LA);
lm = bus_space_read_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM0MA);
pl = bus_space_read_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM0PCILA);
ph = bus_space_read_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM0PCIHA);
printf("0: %08lx,%08lx -> %08lx%08lx %sprefetchable, %s\n", la, lm, ph, pl,
(lm & 2) ? "":"not ",
(lm & 1) ? "enabled":"disabled");
la = bus_space_read_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM1LA);
lm = bus_space_read_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM1MA);
pl = bus_space_read_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM1PCILA);
ph = bus_space_read_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM1PCIHA);
printf("1: %08lx,%08lx -> %08lx%08lx %sprefetchable, %s\n", la, lm, ph, pl,
(lm & 2) ? "":"not ",
(lm & 1) ? "enabled":"disabled");
la = bus_space_read_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM2LA);
lm = bus_space_read_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM2MA);
pl = bus_space_read_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM2PCILA);
ph = bus_space_read_4(pcicfg_iot, pcicfg_ioh, PCIL_PMM2PCIHA);
printf("2: %08lx,%08lx -> %08lx%08lx %sprefetchable, %s\n", la, lm, ph, pl,
(lm & 2) ? "":"not ",
(lm & 1) ? "enabled":"disabled");
printf("PCI -> Local map\n");
tag = pci_make_tag(0, 0, 0, 0);
pl = pci_conf_read(0, tag, PCIC_PTM1BAR);
la = bus_space_read_4(pcicfg_iot, pcicfg_ioh, PCIL_PTM1LA);
lm = bus_space_read_4(pcicfg_iot, pcicfg_ioh, PCIL_PTM1MS);
printf("1: %08lx -> %08lx,%08lx %s\n", pl, la, lm,
(lm & 1)?"enabled":"disabled");
pl = pci_conf_read(0, tag, PCIC_PTM2BAR);
la = bus_space_read_4(pcicfg_iot, pcicfg_ioh, PCIL_PTM2LA);
lm = bus_space_read_4(pcicfg_iot, pcicfg_ioh, PCIL_PTM2MS);
printf("2: %08lx -> %08lx,%08lx %s\n", pl, la, lm,
(lm & 1)?"enabled":"disabled");
}