diff options
| author | Hector Martin <marcan@marcan.st> | 2025-08-26 12:57:18 +0200 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2025-09-05 14:47:16 +0200 |
| commit | ecf6508923f87e4597228f70cc838af3d37f6662 (patch) | |
| tree | fcae2a0d61f87a234f40a455e933fc74a47b6c6f | |
| parent | 5229bd5f9e3dbc1d97fb76fd022fb66968779ca4 (diff) | |
iommu/apple-dart: Clear stream error indicator bits for T8110 DARTs
These registers exist and at least on the t602x variant the IRQ only
clears when theses are cleared.
Signed-off-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Janne Grunau <j@jannau.net>
Reviewed-by: Sven Peter <sven@kernel.org>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Link: https://lore.kernel.org/r/20250826-dart-t8110-stream-error-v1-1-e33395112014@jannau.net
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| -rw-r--r-- | drivers/iommu/apple-dart.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/iommu/apple-dart.c b/drivers/iommu/apple-dart.c index 9696c8f14387..95a4e62b8f63 100644 --- a/drivers/iommu/apple-dart.c +++ b/drivers/iommu/apple-dart.c @@ -122,6 +122,8 @@ #define DART_T8110_ERROR_ADDR_LO 0x170 #define DART_T8110_ERROR_ADDR_HI 0x174 +#define DART_T8110_ERROR_STREAMS 0x1c0 + #define DART_T8110_PROTECT 0x200 #define DART_T8110_UNPROTECT 0x204 #define DART_T8110_PROTECT_LOCK 0x208 @@ -1089,6 +1091,9 @@ static irqreturn_t apple_dart_t8110_irq(int irq, void *dev) error, stream_idx, error_code, fault_name, addr); writel(error, dart->regs + DART_T8110_ERROR); + for (int i = 0; i < BITS_TO_U32(dart->num_streams); i++) + writel(U32_MAX, dart->regs + DART_T8110_ERROR_STREAMS + 4 * i); + return IRQ_HANDLED; } |