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 <[email protected]>
Cc: Steven Price <[email protected]>
Cc: Alyssa Rosenzweig <[email protected]>
Cc: David Airlie <[email protected]>
Cc: Daniel Vetter <[email protected]>
Signed-off-by: Rob Herring <[email protected]>
---
drivers/gpu/drm/panfrost/panfrost_mmu.c | 2 ++
1 file changed, 2 insertions(+)
v3:
- New patch
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);
--
2.20.1
_______________________________________________
dri-devel mailing list
[email protected]
https://lists.freedesktop.org/mailman/listinfo/dri-devel
