diff options
| author | Rob Herring <robh@kernel.org> | 2019-08-27 01:33:15 +0300 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2019-08-30 17:53:32 +0300 |
| commit | 5924d40958dfc2b8996fbf788a9d58e411a6db71 (patch) | |
| tree | 01413e87f6ac0f151a8592440aa13deeada8f1c2 /drivers/gpu/drm/panfrost | |
| parent | 86df65f39b009e00cf2826eac72c5a969b878065 (diff) | |
| download | linux-5924d40958dfc2b8996fbf788a9d58e411a6db71.tar.xz | |
drm/panfrost: Add cache/TLB flush before switching address space
It's not entirely clear if this is required, but add a flush of GPU caches
and TLBs before we change an address space to new page tables.
Fixes: 7282f7645d06 ("drm/panfrost: Implement per FD address spaces")
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190826223317.28509-7-robh@kernel.org
Diffstat (limited to 'drivers/gpu/drm/panfrost')
| -rw-r--r-- | drivers/gpu/drm/panfrost/panfrost_mmu.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c index 3407b00d0a3a..d1ebde3327fe 100644 --- a/drivers/gpu/drm/panfrost/panfrost_mmu.c +++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c @@ -115,6 +115,8 @@ static void panfrost_mmu_enable(struct panfrost_device *pfdev, struct panfrost_m u64 transtab = cfg->arm_mali_lpae_cfg.transtab; u64 memattr = cfg->arm_mali_lpae_cfg.memattr; + mmu_hw_do_operation_locked(pfdev, as_nr, 0, ~0UL, AS_COMMAND_FLUSH_MEM); + mmu_write(pfdev, AS_TRANSTAB_LO(as_nr), transtab & 0xffffffffUL); mmu_write(pfdev, AS_TRANSTAB_HI(as_nr), transtab >> 32); |