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drm/radeon: stop page faults from hanging the system (v2)

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Redirect invalid memory accesses to the default page
instead of locking up the memory controller. Also
enable the invalid memory access interrupts and
start spamming system log with it.

v2 (agd5f): fix up against 2 level PT changes

Signed-off-by: Christian König <deathsimple@vodafone.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Christian König
2012-09-18 15:30:44 -04:00
committed by Alex Deucher
parent 1c4c3a9943
commit ae133a1129
6 changed files with 74 additions and 5 deletions
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3
drivers/gpu/drm/radeon/evergreend.h
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@@ -699,6 +699,7 @@
#define PAGE_TABLE_DEPTH(x) (((x) & 3) << 1)
#define RANGE_PROTECTION_FAULT_ENABLE_DEFAULT (1 << 4)
#define VM_CONTEXT1_CNTL 0x1414
#define VM_CONTEXT1_CNTL2 0x1434
#define VM_CONTEXT0_PAGE_TABLE_BASE_ADDR 0x153C
#define VM_CONTEXT0_PAGE_TABLE_END_ADDR 0x157C
#define VM_CONTEXT0_PAGE_TABLE_START_ADDR 0x155C
@@ -720,6 +721,8 @@
#define CACHE_UPDATE_MODE(x) ((x) << 6)
#define VM_L2_STATUS 0x140C
#define L2_BUSY (1 << 0)
#define VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x14FC
#define VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x14DC
#define WAIT_UNTIL 0x8040