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Commit aa0980b8 authored by Maciej W. Rozycki's avatar Maciej W. Rozycki Committed by Ralf Baechle
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Fixes for system controllers for Atlas/Malta core cards. 

Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent bec0204d
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Showing with 297 additions and 218 deletions
arch/mips/mips-boards/generic/init.c
View file @ aa0980b8
/*
* Carsten Langgaard, carstenl@mips.com
* Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
* Copyright (C) 1999, 2000, 2004, 2005 MIPS Technologies, Inc.
* All rights reserved.
* Authors: Carsten Langgaard <carstenl@mips.com>
* Maciej W. Rozycki <macro@mips.com>
*
* 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
......@@ -22,18 +24,17 @@
#include <linux/string.h>
#include <linux/kernel.h>
#include <asm/io.h>
#include <asm/bootinfo.h>
#include <asm/gt64120.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/mips-boards/prom.h>
#include <asm/mips-boards/generic.h>
#ifdef CONFIG_MIPS_GT64120
#include <asm/gt64120.h>
#endif
#include <asm/mips-boards/msc01_pci.h>
#include <asm/mips-boards/bonito64.h>
#ifdef CONFIG_MIPS_MALTA
#include <asm/mips-boards/msc01_pci.h>
#include <asm/mips-boards/malta.h>
#endif
#ifdef CONFIG_KGDB
extern int rs_kgdb_hook(int, int);
......@@ -225,6 +226,8 @@ void __init kgdb_config (void)
void __init prom_init(void)
{
u32 start, map, mask, data;
prom_argc = fw_arg0;
_prom_argv = (int *) fw_arg1;
_prom_envp = (int *) fw_arg2;
......@@ -266,12 +269,15 @@ void __init prom_init(void)
#else
GT_WRITE(GT_PCI0_CMD_OFS, 0);
#endif
/* Fix up PCI I/O mapping if necessary (for Atlas). */
start = GT_READ(GT_PCI0IOLD_OFS);
map = GT_READ(GT_PCI0IOREMAP_OFS);
if ((start & map) != 0) {
map &= ~start;
GT_WRITE(GT_PCI0IOREMAP_OFS, map);
}
#ifdef CONFIG_MIPS_MALTA
set_io_port_base(MALTA_GT_PORT_BASE);
#else
set_io_port_base((unsigned long)ioremap(0, 0x20000000));
#endif
break;
case MIPS_REVISION_CORID_CORE_EMUL_BON:
......@@ -300,11 +306,7 @@ void __init prom_init(void)
BONITO_BONGENCFG_BYTESWAP;
#endif
#ifdef CONFIG_MIPS_MALTA
set_io_port_base(MALTA_BONITO_PORT_BASE);
#else
set_io_port_base((unsigned long)ioremap(0, 0x20000000));
#endif
break;
case MIPS_REVISION_CORID_CORE_MSC:
......@@ -312,6 +314,12 @@ void __init prom_init(void)
case MIPS_REVISION_CORID_CORE_EMUL_MSC:
_pcictrl_msc = (unsigned long)ioremap(MIPS_MSC01_PCI_REG_BASE, 0x2000);
mb();
MSC_READ(MSC01_PCI_CFG, data);
MSC_WRITE(MSC01_PCI_CFG, data & ~MSC01_PCI_CFG_EN_BIT);
wmb();
/* Fix up lane swapping. */
#ifdef CONFIG_CPU_LITTLE_ENDIAN
MSC_WRITE(MSC01_PCI_SWAP, MSC01_PCI_SWAP_NOSWAP);
#else
......@@ -320,12 +328,23 @@ void __init prom_init(void)
MSC01_PCI_SWAP_BYTESWAP << MSC01_PCI_SWAP_MEM_SHF |
MSC01_PCI_SWAP_BYTESWAP << MSC01_PCI_SWAP_BAR0_SHF);
#endif
/* Fix up target memory mapping. */
MSC_READ(MSC01_PCI_BAR0, mask);
MSC_WRITE(MSC01_PCI_P2SCMSKL, mask & MSC01_PCI_BAR0_SIZE_MSK);
/* Don't handle target retries indefinitely. */
if ((data & MSC01_PCI_CFG_MAXRTRY_MSK) ==
MSC01_PCI_CFG_MAXRTRY_MSK)
data = (data & ~(MSC01_PCI_CFG_MAXRTRY_MSK <<
MSC01_PCI_CFG_MAXRTRY_SHF)) |
((MSC01_PCI_CFG_MAXRTRY_MSK - 1) <<
MSC01_PCI_CFG_MAXRTRY_SHF);
wmb();
MSC_WRITE(MSC01_PCI_CFG, data);
mb();
#ifdef CONFIG_MIPS_MALTA
set_io_port_base(MALTA_MSC_PORT_BASE);
#else
set_io_port_base((unsigned long)ioremap(0, 0x20000000));
#endif
break;
default:
......
arch/mips/mips-boards/generic/pci.c
View file @ aa0980b8
/*
* Carsten Langgaard, carstenl@mips.com
* Copyright (C) 1999, 2000 MIPS Technologies, Inc. All rights reserved.
* 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)
*
......@@ -19,65 +21,46 @@
*
* MIPS boards specific PCI support.
*/
#include <linux/config.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/mips-boards/generic.h>
#include <asm/gt64120.h>
#include <asm/mips-boards/generic.h>
#include <asm/mips-boards/bonito64.h>
#include <asm/mips-boards/msc01_pci.h>
#ifdef CONFIG_MIPS_MALTA
#include <asm/mips-boards/malta.h>
#endif
static struct resource bonito64_mem_resource = {
.name = "Bonito PCI MEM",
.start = 0x10000000UL,
.end = 0x1bffffffUL,
.flags = IORESOURCE_MEM,
};
static struct resource bonito64_io_resource = {
.name = "Bonito IO MEM",
.start = 0x00002000UL, /* avoid conflicts with YAMON allocated I/O addresses */
.name = "Bonito PCI I/O",
.start = 0x00000000UL,
.end = 0x000fffffUL,
.flags = IORESOURCE_IO,
};
static struct resource gt64120_mem_resource = {
.name = "GT64120 PCI MEM",
.start = 0x10000000UL,
.end = 0x1bdfffffUL,
.name = "GT-64120 PCI MEM",
.flags = IORESOURCE_MEM,
};
static struct resource gt64120_io_resource = {
.name = "GT64120 IO MEM",
#ifdef CONFIG_MIPS_ATLAS
.start = 0x18000000UL,
.end = 0x181fffffUL,
#endif
#ifdef CONFIG_MIPS_MALTA
.start = 0x00002000UL,
.end = 0x001fffffUL,
#endif
.name = "GT-64120 PCI I/O",
.flags = IORESOURCE_IO,
};
static struct resource msc_mem_resource = {
.name = "MSC PCI MEM",
.start = 0x10000000UL,
.end = 0x1fffffffUL,
.flags = IORESOURCE_MEM,
};
static struct resource msc_io_resource = {
.name = "MSC IO MEM",
.start = 0x00002000UL,
.end = 0x007fffffUL,
.name = "MSC PCI I/O",
.flags = IORESOURCE_IO,
};
......@@ -89,7 +72,6 @@ static struct pci_controller bonito64_controller = {
.pci_ops = &bonito64_pci_ops,
.io_resource = &bonito64_io_resource,
.mem_resource = &bonito64_mem_resource,
.mem_offset = 0x10000000UL,
.io_offset = 0x00000000UL,
};
......@@ -97,21 +79,18 @@ static struct pci_controller gt64120_controller = {
.pci_ops = &gt64120_pci_ops,
.io_resource = &gt64120_io_resource,
.mem_resource = &gt64120_mem_resource,
.mem_offset = 0x00000000UL,
.io_offset = 0x00000000UL,
};
static struct pci_controller msc_controller = {
.pci_ops = &msc_pci_ops,
.io_resource = &msc_io_resource,
.mem_resource = &msc_mem_resource,
.mem_offset = 0x10000000UL,
.io_offset = 0x00000000UL,
};
void __init mips_pcibios_init(void)
{
struct pci_controller *controller;
unsigned long start, end, map, start1, end1, map1, map2, map3, mask;
switch (mips_revision_corid) {
case MIPS_REVISION_CORID_QED_RM5261:
......@@ -130,29 +109,138 @@ void __init mips_pcibios_init(void)
(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 );
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 = &gt64120_controller;
break;
case MIPS_REVISION_CORID_BONITO64:
case MIPS_REVISION_CORID_CORE_20K:
case MIPS_REVISION_CORID_CORE_EMUL_BON:
/* 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_CORID_CORE_MSC:
case MIPS_REVISION_CORID_CORE_FPGA2:
case MIPS_REVISION_CORID_CORE_EMUL_MSC:
/* 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);
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 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;
}
if (controller->io_resource->start < 0x00001000UL) /* FIXME */
controller->io_resource->start = 0x00001000UL;
iomem_resource.end &= 0xfffffffffULL; /* 64 GB */
ioport_resource.end = controller->io_resource->end;
register_pci_controller (controller);
......
arch/mips/pci/ops-bonito64.c
View file @ aa0980b8
/*
* Carsten Langgaard, carstenl@mips.com
* Copyright (C) 1999, 2000 MIPS Technologies, Inc. All rights reserved.
* Copyright (C) 1999, 2000, 2004 MIPS Technologies, Inc.
* All rights reserved.
* Authors: Carsten Langgaard <carstenl@mips.com>
* Maciej W. Rozycki <macro@mips.com>
*
* 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
......@@ -17,7 +19,6 @@
*
* MIPS boards specific PCI support.
*/
#include <linux/config.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/kernel.h>
......@@ -57,13 +58,6 @@ static int bonito64_pcibios_config_access(unsigned char access_type,
return -1;
}
#ifdef CONFIG_MIPS_BOARDS_GEN
if ((busnum == 0) && (PCI_SLOT(devfn) == 17)) {
/* MIPS Core boards have Bonito connected as device 17 */
return -1;
}
#endif
/* Clear cause register bits */
BONITO_PCICMD |= (BONITO_PCICMD_MABORT_CLR |
BONITO_PCICMD_MTABORT_CLR);
......
arch/mips/pci/ops-gt64120.c
View file @ aa0980b8
/*
* Carsten Langgaard, carstenl@mips.com
* Copyright (C) 1999, 2000 MIPS Technologies, Inc. All rights reserved.
* Copyright (C) 1999, 2000, 2004 MIPS Technologies, Inc.
* All rights reserved.
* Authors: Carsten Langgaard <carstenl@mips.com>
* Maciej W. Rozycki <macro@mips.com>
*
* 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
......@@ -43,10 +45,6 @@ static int gt64120_pcibios_config_access(unsigned char access_type,
unsigned char busnum = bus->number;
u32 intr;
if ((busnum == 0) && (PCI_SLOT(devfn) == 0))
/* Galileo itself is devfn 0, don't move it around */
return -1;
if ((busnum == 0) && (devfn >= PCI_DEVFN(31, 0)))
return -1; /* Because of a bug in the galileo (for slot 31). */
......
arch/mips/pci/ops-msc.c
View file @ aa0980b8
......@@ -21,7 +21,6 @@
* MIPS boards specific PCI support.
*
*/
#include <linux/config.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/kernel.h>
......@@ -49,34 +48,17 @@ static int msc_pcibios_config_access(unsigned char access_type,
struct pci_bus *bus, unsigned int devfn, int where, u32 * data)
{
unsigned char busnum = bus->number;
unsigned char type;
u32 intr;
#ifdef CONFIG_MIPS_BOARDS_GEN
if ((busnum == 0) && (PCI_SLOT(devfn) == 17)) {
/* MIPS Core boards have SOCit connected as device 17 */
return -1;
}
#endif
/* Clear status register bits. */
MSC_WRITE(MSC01_PCI_INTSTAT,
(MSC01_PCI_INTCFG_MA_BIT | MSC01_PCI_INTCFG_TA_BIT));
/* Setup address */
if (busnum == 0)
type = 0; /* Type 0 */
else
type = 1; /* Type 1 */
MSC_WRITE(MSC01_PCI_CFGADDR,
((busnum << MSC01_PCI_CFGADDR_BNUM_SHF) |
(PCI_SLOT(devfn) << MSC01_PCI_CFGADDR_DNUM_SHF)
| (PCI_FUNC(devfn) <<
MSC01_PCI_CFGADDR_FNUM_SHF) | ((where /
4) <<
MSC01_PCI_CFGADDR_RNUM_SHF)
| (type)));
(PCI_SLOT(devfn) << MSC01_PCI_CFGADDR_DNUM_SHF) |
(PCI_FUNC(devfn) << MSC01_PCI_CFGADDR_FNUM_SHF) |
((where / 4) << MSC01_PCI_CFGADDR_RNUM_SHF)));
/* Perform access */
if (access_type == PCI_ACCESS_WRITE)
......@@ -86,15 +68,12 @@ static int msc_pcibios_config_access(unsigned char access_type,
/* Detect Master/Target abort */
MSC_READ(MSC01_PCI_INTSTAT, intr);
if (intr & (MSC01_PCI_INTCFG_MA_BIT |
MSC01_PCI_INTCFG_TA_BIT)) {
if (intr & (MSC01_PCI_INTCFG_MA_BIT | MSC01_PCI_INTCFG_TA_BIT)) {
/* Error occurred */
/* Clear bits */
MSC_READ(MSC01_PCI_INTSTAT, intr);
MSC_WRITE(MSC01_PCI_INTSTAT,
(MSC01_PCI_INTCFG_MA_BIT |
MSC01_PCI_INTCFG_TA_BIT));
(MSC01_PCI_INTCFG_MA_BIT | MSC01_PCI_INTCFG_TA_BIT));
return -1;
}
......
include/asm-mips/mips-boards/msc01_pci.h
View file @ aa0980b8
/*
* PCI Register definitions for the MIPS System Controller.
*
* Carsten Langgaard, carstenl@mips.com
* Copyright (C) 2002 MIPS Technologies, Inc. All rights reserved.
* Copyright (C) 2002, 2005 MIPS Technologies, Inc. All rights reserved.
* Authors: Carsten Langgaard <carstenl@mips.com>
* Maciej W. Rozycki <macro@mips.com>
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
......@@ -189,7 +190,7 @@
#define MSC01_PCI_CFG_EN_MSK 0x00008000
#define MSC01_PCI_CFG_EN_BIT MSC01_PCI_CFG_EN_MSK
#define MSC01_PCI_CFG_MAXRTRY_SHF 0
#define MSC01_PCI_CFG_MAXRTRY_MSK 0x000000ff
#define MSC01_PCI_CFG_MAXRTRY_MSK 0x00000fff
#define MSC01_PCI_SWAP_IO_SHF 18
#define MSC01_PCI_SWAP_IO_MSK 0x000c0000
......
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