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powerpc/8xx: Move 8xx machine check handlers into platforms/8xx

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In the same spirit as what was done for 4xx and 44x, move
the 8xx machine check into platforms/8xx

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy 2017-08-08 13:58:42 +02:00 committed by Michael Ellerman
parent 0e23e7b32b
commit f70b1e8d17
3 changed files with 38 additions and 26 deletions
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25
arch/powerpc/kernel/traps.c
View File

@ -560,31 +560,6 @@ int machine_check_e200(struct pt_regs *regs)
return 0;
}
#elif defined(CONFIG_PPC_8xx)
int machine_check_8xx(struct pt_regs *regs)
{
unsigned long reason = regs->msr;
pr_err("Machine check in kernel mode.\n");
pr_err("Caused by (from SRR1=%lx): ", reason);
if (reason & 0x40000000)
pr_err("Fetch error at address %lx\n", regs->nip);
else
pr_err("Data access error at address %lx\n", regs->dar);
#ifdef CONFIG_PCI
/* the qspan pci read routines can cause machine checks -- Cort
*
* yuck !!! that totally needs to go away ! There are better ways
* to deal with that than having a wart in the mcheck handler.
* -- BenH
*/
bad_page_fault(regs, regs->dar, SIGBUS);
return 1;
#else
return 0;
#endif
}
#elif defined(CONFIG_PPC32)
int machine_check_generic(struct pt_regs *regs)
{

2
arch/powerpc/platforms/8xx/Makefile
View File

@ -1,7 +1,7 @@
#
# Makefile for the PowerPC 8xx linux kernel.
#
obj-y += m8xx_setup.o
obj-y += m8xx_setup.o machine_check.o
obj-$(CONFIG_MPC885ADS) += mpc885ads_setup.o
obj-$(CONFIG_MPC86XADS) += mpc86xads_setup.o
obj-$(CONFIG_PPC_EP88XC) += ep88xc.o

37
arch/powerpc/platforms/8xx/machine_check.c Normal file
View File

@ -0,0 +1,37 @@
/*
* 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.
*/
#include <linux/kernel.h>
#include <linux/printk.h>
#include <linux/ptrace.h>
#include <asm/reg.h>
int machine_check_8xx(struct pt_regs *regs)
{
unsigned long reason = regs->msr;
pr_err("Machine check in kernel mode.\n");
pr_err("Caused by (from SRR1=%lx): ", reason);
if (reason & 0x40000000)
pr_err("Fetch error at address %lx\n", regs->nip);
else
pr_err("Data access error at address %lx\n", regs->dar);
#ifdef CONFIG_PCI
/* the qspan pci read routines can cause machine checks -- Cort
*
* yuck !!! that totally needs to go away ! There are better ways
* to deal with that than having a wart in the mcheck handler.
* -- BenH
*/
bad_page_fault(regs, regs->dar, SIGBUS);
return 1;
#else
return 0;
#endif
}