diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2021-12-08 18:34:04 +0300 |
|---|---|---|
| committer | Ramalingam C <ramalingam.c@intel.com> | 2021-12-14 12:38:20 +0300 |
| commit | bd56c63ca1d953f035c1a06a0431c106ffada849 (patch) | |
| tree | 8cd7dd8f7f6742224055e601e0a3ecd1294b9a15 /drivers/gpu/drm/i915/i915_params.c | |
| parent | 2e21de9028270a72d2b7dfbd0fe46a6beace1f01 (diff) | |
| download | linux-bd56c63ca1d953f035c1a06a0431c106ffada849.tar.xz | |
drm/i915: Test all device memory on probing
This extends the previous sanitychecking of device memory to read/write
all the memory on the device during the device probe, ala memtest86,
as an optional module parameter: i915.memtest=1. This is not expected to
be fast, but a reasonably thorough verfification that the device memory
is accessible and doesn't return bit errors.
v2: Rebased.
Suggested-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211208153404.27546-4-ramalingam.c@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_params.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_params.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c index e07f4cfea63a..525ae832aa9a 100644 --- a/drivers/gpu/drm/i915/i915_params.c +++ b/drivers/gpu/drm/i915/i915_params.c @@ -140,6 +140,9 @@ i915_param_named_unsafe(invert_brightness, int, 0400, i915_param_named(disable_display, bool, 0400, "Disable display (default: false)"); +i915_param_named(memtest, bool, 0400, + "Perform a read/write test of all device memory on module load (default: off)"); + i915_param_named(mmio_debug, int, 0400, "Enable the MMIO debug code for the first N failures (default: off). " "This may negatively affect performance."); |