237036de65
Remove the Malta-specific CM probe code and instead make use of the newly added generic CM code. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6364/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
254 lines
7.9 KiB
C
254 lines
7.9 KiB
C
/*
|
|
* Copyright (C) 1999, 2000, 2004, 2005 MIPS Technologies, Inc.
|
|
* All rights reserved.
|
|
* Authors: Carsten Langgaard <carstenl@mips.com>
|
|
* Maciej W. Rozycki <macro@mips.com>
|
|
*
|
|
* Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
|
|
*
|
|
* This program is free software; you can distribute it and/or modify it
|
|
* under the terms of the GNU General Public License (Version 2) as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
|
|
*
|
|
* MIPS boards specific PCI support.
|
|
*/
|
|
#include <linux/types.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <asm/gt64120.h>
|
|
#include <asm/mips-cm.h>
|
|
#include <asm/mips-boards/generic.h>
|
|
#include <asm/mips-boards/bonito64.h>
|
|
#include <asm/mips-boards/msc01_pci.h>
|
|
|
|
static struct resource bonito64_mem_resource = {
|
|
.name = "Bonito PCI MEM",
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
|
|
static struct resource bonito64_io_resource = {
|
|
.name = "Bonito PCI I/O",
|
|
.start = 0x00000000UL,
|
|
.end = 0x000fffffUL,
|
|
.flags = IORESOURCE_IO,
|
|
};
|
|
|
|
static struct resource gt64120_mem_resource = {
|
|
.name = "GT-64120 PCI MEM",
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
|
|
static struct resource gt64120_io_resource = {
|
|
.name = "GT-64120 PCI I/O",
|
|
.flags = IORESOURCE_IO,
|
|
};
|
|
|
|
static struct resource msc_mem_resource = {
|
|
.name = "MSC PCI MEM",
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
|
|
static struct resource msc_io_resource = {
|
|
.name = "MSC PCI I/O",
|
|
.flags = IORESOURCE_IO,
|
|
};
|
|
|
|
extern struct pci_ops bonito64_pci_ops;
|
|
extern struct pci_ops gt64xxx_pci0_ops;
|
|
extern struct pci_ops msc_pci_ops;
|
|
|
|
static struct pci_controller bonito64_controller = {
|
|
.pci_ops = &bonito64_pci_ops,
|
|
.io_resource = &bonito64_io_resource,
|
|
.mem_resource = &bonito64_mem_resource,
|
|
.io_offset = 0x00000000UL,
|
|
};
|
|
|
|
static struct pci_controller gt64120_controller = {
|
|
.pci_ops = >64xxx_pci0_ops,
|
|
.io_resource = >64120_io_resource,
|
|
.mem_resource = >64120_mem_resource,
|
|
};
|
|
|
|
static struct pci_controller msc_controller = {
|
|
.pci_ops = &msc_pci_ops,
|
|
.io_resource = &msc_io_resource,
|
|
.mem_resource = &msc_mem_resource,
|
|
};
|
|
|
|
void __init mips_pcibios_init(void)
|
|
{
|
|
struct pci_controller *controller;
|
|
resource_size_t start, end, map, start1, end1, map1, map2, map3, mask;
|
|
|
|
switch (mips_revision_sconid) {
|
|
case MIPS_REVISION_SCON_GT64120:
|
|
/*
|
|
* Due to a bug in the Galileo system controller, we need
|
|
* to setup the PCI BAR for the Galileo internal registers.
|
|
* This should be done in the bios/bootprom and will be
|
|
* fixed in a later revision of YAMON (the MIPS boards
|
|
* boot prom).
|
|
*/
|
|
GT_WRITE(GT_PCI0_CFGADDR_OFS,
|
|
(0 << GT_PCI0_CFGADDR_BUSNUM_SHF) | /* Local bus */
|
|
(0 << GT_PCI0_CFGADDR_DEVNUM_SHF) | /* GT64120 dev */
|
|
(0 << GT_PCI0_CFGADDR_FUNCTNUM_SHF) | /* Function 0*/
|
|
((0x20/4) << GT_PCI0_CFGADDR_REGNUM_SHF) | /* BAR 4*/
|
|
GT_PCI0_CFGADDR_CONFIGEN_BIT);
|
|
|
|
/* Perform the write */
|
|
GT_WRITE(GT_PCI0_CFGDATA_OFS, CPHYSADDR(MIPS_GT_BASE));
|
|
|
|
/* Set up resource ranges from the controller's registers. */
|
|
start = GT_READ(GT_PCI0M0LD_OFS);
|
|
end = GT_READ(GT_PCI0M0HD_OFS);
|
|
map = GT_READ(GT_PCI0M0REMAP_OFS);
|
|
end = (end & GT_PCI_HD_MSK) | (start & ~GT_PCI_HD_MSK);
|
|
start1 = GT_READ(GT_PCI0M1LD_OFS);
|
|
end1 = GT_READ(GT_PCI0M1HD_OFS);
|
|
map1 = GT_READ(GT_PCI0M1REMAP_OFS);
|
|
end1 = (end1 & GT_PCI_HD_MSK) | (start1 & ~GT_PCI_HD_MSK);
|
|
/* Cannot support multiple windows, use the wider. */
|
|
if (end1 - start1 > end - start) {
|
|
start = start1;
|
|
end = end1;
|
|
map = map1;
|
|
}
|
|
mask = ~(start ^ end);
|
|
/* We don't support remapping with a discontiguous mask. */
|
|
BUG_ON((start & GT_PCI_HD_MSK) != (map & GT_PCI_HD_MSK) &&
|
|
mask != ~((mask & -mask) - 1));
|
|
gt64120_mem_resource.start = start;
|
|
gt64120_mem_resource.end = end;
|
|
gt64120_controller.mem_offset = (start & mask) - (map & mask);
|
|
/* Addresses are 36-bit, so do shifts in the destinations. */
|
|
gt64120_mem_resource.start <<= GT_PCI_DCRM_SHF;
|
|
gt64120_mem_resource.end <<= GT_PCI_DCRM_SHF;
|
|
gt64120_mem_resource.end |= (1 << GT_PCI_DCRM_SHF) - 1;
|
|
gt64120_controller.mem_offset <<= GT_PCI_DCRM_SHF;
|
|
|
|
start = GT_READ(GT_PCI0IOLD_OFS);
|
|
end = GT_READ(GT_PCI0IOHD_OFS);
|
|
map = GT_READ(GT_PCI0IOREMAP_OFS);
|
|
end = (end & GT_PCI_HD_MSK) | (start & ~GT_PCI_HD_MSK);
|
|
mask = ~(start ^ end);
|
|
/* We don't support remapping with a discontiguous mask. */
|
|
BUG_ON((start & GT_PCI_HD_MSK) != (map & GT_PCI_HD_MSK) &&
|
|
mask != ~((mask & -mask) - 1));
|
|
gt64120_io_resource.start = map & mask;
|
|
gt64120_io_resource.end = (map & mask) | ~mask;
|
|
gt64120_controller.io_offset = 0;
|
|
/* Addresses are 36-bit, so do shifts in the destinations. */
|
|
gt64120_io_resource.start <<= GT_PCI_DCRM_SHF;
|
|
gt64120_io_resource.end <<= GT_PCI_DCRM_SHF;
|
|
gt64120_io_resource.end |= (1 << GT_PCI_DCRM_SHF) - 1;
|
|
|
|
controller = >64120_controller;
|
|
break;
|
|
|
|
case MIPS_REVISION_SCON_BONITO:
|
|
/* Set up resource ranges from the controller's registers. */
|
|
map = BONITO_PCIMAP;
|
|
map1 = (BONITO_PCIMAP & BONITO_PCIMAP_PCIMAP_LO0) >>
|
|
BONITO_PCIMAP_PCIMAP_LO0_SHIFT;
|
|
map2 = (BONITO_PCIMAP & BONITO_PCIMAP_PCIMAP_LO1) >>
|
|
BONITO_PCIMAP_PCIMAP_LO1_SHIFT;
|
|
map3 = (BONITO_PCIMAP & BONITO_PCIMAP_PCIMAP_LO2) >>
|
|
BONITO_PCIMAP_PCIMAP_LO2_SHIFT;
|
|
/* Combine as many adjacent windows as possible. */
|
|
map = map1;
|
|
start = BONITO_PCILO0_BASE;
|
|
end = 1;
|
|
if (map3 == map2 + 1) {
|
|
map = map2;
|
|
start = BONITO_PCILO1_BASE;
|
|
end++;
|
|
}
|
|
if (map2 == map1 + 1) {
|
|
map = map1;
|
|
start = BONITO_PCILO0_BASE;
|
|
end++;
|
|
}
|
|
bonito64_mem_resource.start = start;
|
|
bonito64_mem_resource.end = start +
|
|
BONITO_PCIMAP_WINBASE(end) - 1;
|
|
bonito64_controller.mem_offset = start -
|
|
BONITO_PCIMAP_WINBASE(map);
|
|
|
|
controller = &bonito64_controller;
|
|
break;
|
|
|
|
case MIPS_REVISION_SCON_SOCIT:
|
|
case MIPS_REVISION_SCON_ROCIT:
|
|
case MIPS_REVISION_SCON_SOCITSC:
|
|
case MIPS_REVISION_SCON_SOCITSCP:
|
|
/* Set up resource ranges from the controller's registers. */
|
|
MSC_READ(MSC01_PCI_SC2PMBASL, start);
|
|
MSC_READ(MSC01_PCI_SC2PMMSKL, mask);
|
|
MSC_READ(MSC01_PCI_SC2PMMAPL, map);
|
|
msc_mem_resource.start = start & mask;
|
|
msc_mem_resource.end = (start & mask) | ~mask;
|
|
msc_controller.mem_offset = (start & mask) - (map & mask);
|
|
if (mips_cm_numiocu()) {
|
|
write_gcr_reg0_base(start);
|
|
write_gcr_reg0_mask(mask |
|
|
CM_GCR_REGn_MASK_CMTGT_IOCU0);
|
|
}
|
|
MSC_READ(MSC01_PCI_SC2PIOBASL, start);
|
|
MSC_READ(MSC01_PCI_SC2PIOMSKL, mask);
|
|
MSC_READ(MSC01_PCI_SC2PIOMAPL, map);
|
|
msc_io_resource.start = map & mask;
|
|
msc_io_resource.end = (map & mask) | ~mask;
|
|
msc_controller.io_offset = 0;
|
|
ioport_resource.end = ~mask;
|
|
if (mips_cm_numiocu()) {
|
|
write_gcr_reg1_base(start);
|
|
write_gcr_reg1_mask(mask |
|
|
CM_GCR_REGn_MASK_CMTGT_IOCU0);
|
|
}
|
|
/* If ranges overlap I/O takes precedence. */
|
|
start = start & mask;
|
|
end = start | ~mask;
|
|
if ((start >= msc_mem_resource.start &&
|
|
start <= msc_mem_resource.end) ||
|
|
(end >= msc_mem_resource.start &&
|
|
end <= msc_mem_resource.end)) {
|
|
/* Use the larger space. */
|
|
start = max(start, msc_mem_resource.start);
|
|
end = min(end, msc_mem_resource.end);
|
|
if (start - msc_mem_resource.start >=
|
|
msc_mem_resource.end - end)
|
|
msc_mem_resource.end = start - 1;
|
|
else
|
|
msc_mem_resource.start = end + 1;
|
|
}
|
|
|
|
controller = &msc_controller;
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
/* PIIX4 ACPI starts at 0x1000 */
|
|
if (controller->io_resource->start < 0x00001000UL)
|
|
controller->io_resource->start = 0x00001000UL;
|
|
|
|
iomem_resource.end &= 0xfffffffffULL; /* 64 GB */
|
|
ioport_resource.end = controller->io_resource->end;
|
|
|
|
controller->io_map_base = mips_io_port_base;
|
|
|
|
register_pci_controller(controller);
|
|
}
|