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[POWERPC] Remove PCI-e errata for MPC8641 silicon ver 1.0 

Remove errata for PCI-e support of Rev 1.0 of MPC8641 since its considered
obselete and is not production level silicon from Freescale.

Signed-off-by: Zhang Wei <wei.zhang@freescale.com>
Acked-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Zhang Wei 2007-05-22 11:38:26 +08:00 committed by Kumar Gala
parent 0a3786c5f7
commit bf7c036fb4
8 changed files with 3 additions and 202 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/powerpc/Kconfig
View File

@ -419,10 +419,6 @@ config SBUS
config FSL_SOC
bool
config FSL_PCIE
bool
depends on PPC_86xx
# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
config MCA
bool

2
arch/powerpc/boot/dts/mpc8641_hpcn.dts
View File

@ -186,7 +186,7 @@
#size-cells = <2>;
#address-cells = <3>;
reg = <8000 1000>;
bus-range = <0 fe>;
bus-range = <0 ff>;
ranges = <02000000 0 80000000 80000000 0 20000000
01000000 0 00000000 e2000000 0 00100000>;
clock-frequency = <1fca055>;

6
arch/powerpc/platforms/86xx/mpc86xx.h
View File

@ -20,12 +20,6 @@ extern int mpc86xx_add_bridge(struct device_node *dev);
extern int mpc86xx_exclude_device(struct pci_controller *hose,
u_char bus, u_char devfn);
extern void setup_indirect_pcie(struct pci_controller *hose,
u32 cfg_addr, u32 cfg_data);
extern void setup_indirect_pcie_nomap(struct pci_controller *hose,
void __iomem *cfg_addr,
void __iomem *cfg_data);
extern void __init mpc86xx_smp_init(void);
#endif /* __MPC86XX_H__ */

2
arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
View File

@ -358,8 +358,6 @@ mpc86xx_hpcn_setup_arch(void)
#ifdef CONFIG_PCI
for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
mpc86xx_add_bridge(np);
ppc_md.pci_exclude_device = mpc86xx_exclude_device;
#endif
printk("MPC86xx HPCN board from Freescale Semiconductor\n");

18
arch/powerpc/platforms/86xx/pci.c
View File

@ -133,19 +133,6 @@ mpc86xx_setup_pcie(struct pci_controller *hose, u32 pcie_offset, u32 pcie_size)
early_write_config_word(hose, 0, 0, PCI_COMMAND, cmd);
early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0x80);
/* PCIE Bus, Fix the MPC8641D host bridge's location to bus 0xFF. */
early_read_config_dword(hose, 0, 0, PCI_PRIMARY_BUS, &temps);
temps = (temps & 0xff000000) | (0xff) | (0x0 << 8) | (0xfe << 16);
early_write_config_dword(hose, 0, 0, PCI_PRIMARY_BUS, temps);
}
int mpc86xx_exclude_device(struct pci_controller *hose, u_char bus, u_char devfn)
{
if (bus == 0 && PCI_SLOT(devfn) == 0)
return PCIBIOS_DEVICE_NOT_FOUND;
return PCIBIOS_SUCCESSFUL;
}
int __init mpc86xx_add_bridge(struct device_node *dev)
@ -173,11 +160,10 @@ int __init mpc86xx_add_bridge(struct device_node *dev)
return -ENOMEM;
hose->arch_data = dev;
/* last_busno = 0xfe cause by MPC8641 PCIE bug */
hose->first_busno = bus_range ? bus_range[0] : 0x0;
hose->last_busno = bus_range ? bus_range[1] : 0xfe;
hose->last_busno = bus_range ? bus_range[1] : 0xff;
setup_indirect_pcie(hose, rsrc.start, rsrc.start + 0x4);
setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4);
/* Setup the PCIE host controller. */
mpc86xx_setup_pcie(hose, rsrc.start, rsrc.end - rsrc.start + 1);

1
arch/powerpc/platforms/Kconfig
View File

@ -31,7 +31,6 @@ config PPC_86xx
bool "Freescale 86xx"
depends on 6xx
select FSL_SOC
select FSL_PCIE
select ALTIVEC
help
The Freescale E600 SoCs have 74xx cores.

1
arch/powerpc/sysdev/Makefile
View File

@ -12,7 +12,6 @@ obj-$(CONFIG_PPC_PMI) += pmi.o
obj-$(CONFIG_U3_DART) += dart_iommu.o
obj-$(CONFIG_MMIO_NVRAM) += mmio_nvram.o
obj-$(CONFIG_FSL_SOC) += fsl_soc.o
obj-$(CONFIG_FSL_PCIE) += fsl_pcie.o
obj-$(CONFIG_TSI108_BRIDGE) += tsi108_pci.o tsi108_dev.o
obj-$(CONFIG_QUICC_ENGINE) += qe_lib/
mv64x60-$(CONFIG_PCI) += mv64x60_pci.o

171
arch/powerpc/sysdev/fsl_pcie.c
View File

@ -1,171 +0,0 @@
/*
* Support for indirect PCI bridges.
*
* Copyright (C) 1998 Gabriel Paubert.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* "Temporary" MPC8548 Errata file -
* The standard indirect_pci code should work with future silicon versions.
*/
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/bootmem.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/pci-bridge.h>
#include <asm/machdep.h>
#define PCI_CFG_OUT out_be32
/* ERRATA PCI-Ex 14 PCIE Controller timeout */
#define PCIE_FIX out_be32(hose->cfg_addr+0x4, 0x0400ffff)
static int
indirect_read_config_pcie(struct pci_bus *bus, unsigned int devfn, int offset,
int len, u32 *val)
{
struct pci_controller *hose = bus->sysdata;
volatile void __iomem *cfg_data;
u32 temp;
if (ppc_md.pci_exclude_device)
if (ppc_md.pci_exclude_device(hose, bus->number, devfn))
return PCIBIOS_DEVICE_NOT_FOUND;
/* Possible artifact of CDCpp50937 needs further investigation */
if (devfn != 0x0 && bus->number == 0xff)
return PCIBIOS_DEVICE_NOT_FOUND;
PCIE_FIX;
if (bus->number == 0xff) {
PCI_CFG_OUT(hose->cfg_addr,
(0x80000000 | ((offset & 0xf00) << 16) |
(bus->number<< 16)
| (devfn << 8) | ((offset & 0xfc) )));
} else {
PCI_CFG_OUT(hose->cfg_addr,
(0x80000001 | ((offset & 0xf00) << 16) |
(bus->number<< 16)
| (devfn << 8) | ((offset & 0xfc) )));
}
/*
* Note: the caller has already checked that offset is
* suitably aligned and that len is 1, 2 or 4.
*/
/* ERRATA PCI-Ex 12 - Configuration Address/Data Alignment */
cfg_data = hose->cfg_data;
PCIE_FIX;
temp = in_le32(cfg_data);
switch (len) {
case 1:
*val = (temp >> (((offset & 3))*8)) & 0xff;
break;
case 2:
*val = (temp >> (((offset & 3))*8)) & 0xffff;
break;
default:
*val = temp;
break;
}
return PCIBIOS_SUCCESSFUL;
}
static int
indirect_write_config_pcie(struct pci_bus *bus, unsigned int devfn, int offset,
int len, u32 val)
{
struct pci_controller *hose = bus->sysdata;
volatile void __iomem *cfg_data;
u32 temp;
if (ppc_md.pci_exclude_device)
if (ppc_md.pci_exclude_device(hose, bus->number, devfn))
return PCIBIOS_DEVICE_NOT_FOUND;
/* Possible artifact of CDCpp50937 needs further investigation */
if (devfn != 0x0 && bus->number == 0xff)
return PCIBIOS_DEVICE_NOT_FOUND;
PCIE_FIX;
if (bus->number == 0xff) {
PCI_CFG_OUT(hose->cfg_addr,
(0x80000000 | ((offset & 0xf00) << 16) |
(bus->number << 16)
| (devfn << 8) | ((offset & 0xfc) )));
} else {
PCI_CFG_OUT(hose->cfg_addr,
(0x80000001 | ((offset & 0xf00) << 16) |
(bus->number << 16)
| (devfn << 8) | ((offset & 0xfc) )));
}
/*
* Note: the caller has already checked that offset is
* suitably aligned and that len is 1, 2 or 4.
*/
/* ERRATA PCI-Ex 12 - Configuration Address/Data Alignment */
cfg_data = hose->cfg_data;
switch (len) {
case 1:
PCIE_FIX;
temp = in_le32(cfg_data);
temp = (temp & ~(0xff << ((offset & 3) * 8))) |
(val << ((offset & 3) * 8));
PCIE_FIX;
out_le32(cfg_data, temp);
break;
case 2:
PCIE_FIX;
temp = in_le32(cfg_data);
temp = (temp & ~(0xffff << ((offset & 3) * 8)));
temp |= (val << ((offset & 3) * 8)) ;
PCIE_FIX;
out_le32(cfg_data, temp);
break;
default:
PCIE_FIX;
out_le32(cfg_data, val);
break;
}
PCIE_FIX;
return PCIBIOS_SUCCESSFUL;
}
static struct pci_ops indirect_pcie_ops = {
indirect_read_config_pcie,
indirect_write_config_pcie
};
void __init
setup_indirect_pcie_nomap(struct pci_controller* hose, void __iomem * cfg_addr,
void __iomem * cfg_data)
{
hose->cfg_addr = cfg_addr;
hose->cfg_data = cfg_data;
hose->ops = &indirect_pcie_ops;
}
void __init
setup_indirect_pcie(struct pci_controller* hose, u32 cfg_addr, u32 cfg_data)
{
unsigned long base = cfg_addr & PAGE_MASK;
void __iomem *mbase, *addr, *data;
mbase = ioremap(base, PAGE_SIZE);
addr = mbase + (cfg_addr & ~PAGE_MASK);
if ((cfg_data & PAGE_MASK) != base)
mbase = ioremap(cfg_data & PAGE_MASK, PAGE_SIZE);
data = mbase + (cfg_data & ~PAGE_MASK);
setup_indirect_pcie_nomap(hose, addr, data);
}