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linux/arch/parisc/kernel
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John David Anglin 62d8e8dea7 parisc: Fix address in HPMC IVA 
commit 1138b6718f upstream.

Helge noticed that the address of the os_hpmc handler was not being
correctly calculated in the hpmc macro.  As a result, PDCE_CHECK would
fail to call os_hpmc:

<Cpu2> e800009802e00000  0000000000000000  CC_ERR_CHECK_HPMC
<Cpu2> 37000f7302e00000  8040004000000000  CC_ERR_CPU_CHECK_SUMMARY
<Cpu2> f600105e02e00000  fffffff0f0c00000  CC_MC_HPMC_MONARCH_SELECTED
<Cpu2> 140003b202e00000  000000000000000b  CC_ERR_HPMC_STATE_ENTRY
<Cpu2> 5600100b02e00000  00000000000001a0  CC_MC_OS_HPMC_LEN_ERR
<Cpu2> 5600106402e00000  fffffff0f0438e70  CC_MC_BR_TO_OS_HPMC_FAILED
<Cpu2> e800009802e00000  0000000000000000  CC_ERR_CHECK_HPMC
<Cpu2> 37000f7302e00000  8040004000000000  CC_ERR_CPU_CHECK_SUMMARY
<Cpu2> 4000109f02e00000  0000000000000000  CC_MC_HPMC_INITIATED
<Cpu2> 4000101902e00000  0000000000000000  CC_MC_MULTIPLE_HPMCS
<Cpu2> 030010d502e00000  0000000000000000  CC_CPU_STOP

The address problem can be seen by dumping the fault vector:

0000000040159000 <fault_vector_20>:
    40159000:   63 6f 77 73     stb r15,-2447(dp)
    40159004:   20 63 61 6e     ldil L%b747000,r3
    40159008:   20 66 6c 79     ldil L%-1c3b3000,r3
        ...
    40159020:   08 00 02 40     nop
    40159024:   20 6e 60 02     ldil L%15d000,r3
    40159028:   34 63 00 00     ldo 0(r3),r3
    4015902c:   e8 60 c0 02     bv,n r0(r3)
    40159030:   08 00 02 40     nop
    40159034:   00 00 00 00     break 0,0
    40159038:   c0 00 70 00     bb,*< r0,sar,40159840 <fault_vector_20+0x840>
    4015903c:   00 00 00 00     break 0,0

Location 40159038 should contain the physical address of os_hpmc:

000000004015d000 <os_hpmc>:
    4015d000:   08 1a 02 43     copy r26,r3
    4015d004:   01 c0 08 a4     mfctl iva,r4
    4015d008:   48 85 00 68     ldw 34(r4),r5

This patch moves the address setup into initialize_ivt to resolve the
above problem.  I tested the change by dumping the HPMC entry after setup:

0000000040209020:  8000240
0000000040209024: 206a2004
0000000040209028: 34630ac0
000000004020902c: e860c002
0000000040209030:  8000240
0000000040209034: 1bdddce6
0000000040209038:   15d000
000000004020903c:      1a0

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
History 2019-02-11 17:53:36 +00:00
..
.gitignore parisc: add arch/parisc/kernel/.gitignore 2008-10-10 16:32:28 +00:00
asm-offsets.c parisc: Unbreak handling exceptions from kernel modules 2016-05-01 00:06:10 +02:00
audit.c parisc: add kernel audit feature 2013-11-07 22:27:20 +01:00
binfmt_elf32.c parisc: fix redefinition of SET_PERSONALITY 2013-03-02 20:15:28 +01:00
cache.c parisc: change value of SHMLBA from 0x00400000 to PAGE_SIZE 2014-04-13 15:00:53 +02:00
compat_audit.c parisc: add kernel audit feature 2013-11-07 22:27:20 +01:00
drivers.c parisc: Fix out of array access in match_pci_device() 2018-10-21 08:45:01 +01:00
entry.S parisc: Fix address in HPMC IVA 2019-02-11 17:53:36 +00:00
firmware.c parisc: delete __cpuinit usage from all users 2013-07-14 19:36:51 -04:00
ftrace.c sched_clock: Add local_clock() API and improve documentation 2010-06-09 10:34:49 +02:00
hardware.c parisc: add serial ports of C8000/1GHz machine to hardware database 2014-07-13 15:51:58 +02:00
head.S parisc: fix kernel memory layout in vmlinux.ld.S 2013-11-30 22:09:21 +01:00
hpmc.S parisc: Fix HPMC handler by increasing size to multiple of 16 bytes 2018-10-21 08:45:01 +01:00
inventory.c parisc: Fix interrupt routing for C8000 serial ports 2013-07-31 23:42:32 +02:00
irq.c parisc: Filter out spurious interrupts in PA-RISC irq handler 2015-09-30 13:20:59 +01:00
Makefile parisc: add kernel audit feature 2013-11-07 22:27:20 +01:00
module.c mm/arch: use NUMA_NO_NODE 2013-11-13 12:09:05 +09:00
pa7300lc.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pacache.S parisc: Remove unnecessary TLB purges from flush_dcache_page_asm and flush_icache_page_asm 2017-02-23 03:54:43 +00:00
parisc_ksyms.c parisc: Avoid function pointers for kernel exception routines 2016-05-01 00:06:09 +02:00
pci-dma.c parisc: Fix race in pci-dma.c 2017-02-23 03:54:40 +00:00
pci.c parisc: provide pci_mmap_page_range() for parisc 2013-06-18 20:29:08 +02:00
pdc_chassis.c parisc: single_open() leaks 2013-05-05 00:10:41 -04:00
pdc_cons.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
perf.c parisc: remove big kernel lock 2010-10-16 22:43:08 +02:00
perf_asm.S Revert "parisc: fix trivial section name warnings" 2008-06-13 10:49:45 -04:00
perf_images.h [PARISC] Use kzalloc and other janitor-style cleanups 2006-01-22 20:26:31 -05:00
process.c parisc: add flexible mmap memory layout support 2014-02-02 21:00:13 +01:00
processor.c parisc: delete __cpuinit usage from all users 2013-07-14 19:36:51 -04:00
ptrace.c parisc: add kernel audit feature 2013-11-07 22:27:20 +01:00
real2.S parisc: move pdc_result to real2.S 2008-10-10 16:32:28 +00:00
setup.c parisc: correctly display number of active CPUs 2013-11-07 22:29:05 +01:00
signal.c parisc: Fix syscall restarts 2016-01-25 10:43:57 +00:00
signal32.c constify copy_siginfo_to_user{,32}() 2013-11-09 00:16:29 -05:00
signal32.h constify copy_siginfo_to_user{,32}() 2013-11-09 00:16:29 -05:00
smp.c parisc: do not count IPI calls twice 2013-11-07 22:28:54 +01:00
stacktrace.c parisc: add LATENCYTOP_SUPPORT and CONFIG_STACKTRACE_SUPPORT 2009-03-31 02:51:34 +00:00
sys_parisc.c mm: larger stack guard gap, between vmas 2017-07-02 17:13:02 +01:00
sys_parisc32.c parisc: drop unused defines and header includes 2014-07-13 15:56:12 +02:00
syscall.S parisc: Fix validity check of pointer size argument in new CAS implementation 2018-02-13 18:42:24 +00:00
syscall_table.S parisc: use compat_sys_keyctl() 2017-10-12 15:27:59 +01:00
time.c parisc: move definition of PAGE0 to asm/page.h 2012-05-10 15:12:08 -07:00
topology.c parisc: Replace NR_CPUS in parisc code 2009-01-05 19:09:02 +00:00
traps.c parisc: Fix address in HPMC IVA 2019-02-11 17:53:36 +00:00
unaligned.c parisc: Fix pagefault crash in unaligned __get_user() call 2016-08-22 22:38:08 +01:00
unwind.c parisc: use kernel_text_address() in unwind functions 2013-11-30 22:08:54 +01:00
vmlinux.lds.S parisc: fix kernel memory layout in vmlinux.ld.S 2013-11-30 22:09:21 +01:00