diff options
| author | Karol Wachowski <karol.wachowski@linux.intel.com> | 2023-09-25 15:11:35 +0300 |
|---|---|---|
| committer | Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com> | 2023-09-27 08:40:30 +0300 |
| commit | ec3e3adc6d53b0f4a9afc8f903fbf851341e0193 (patch) | |
| tree | 9e9a599db9080451e5e3556bffdcff4a1adb1833 /drivers/accel | |
| parent | 6c3f2f90ccad024806f72c49740742df4ded3727 (diff) | |
| download | linux-ec3e3adc6d53b0f4a9afc8f903fbf851341e0193.tar.xz | |
accel/ivpu/40xx: Disable frequency change interrupt
Do not enable frequency change interrupt on 40xx as it might
lead to an interrupt storm in current design.
FREQ_CHANGE interrupt is triggered on D0I2 entry which will cause
KMD to check VPU interrupt sources by reading VPUIP registers.
Access to those registers will toggle necessary clocks and trigger
another FREQ_CHANGE interrupt possibly ending in an infinite loop.
FREQ_CHANGE interrupt has only debug purposes and can be permanently
disabled.
Fixes: 79cdc56c4a54 ("accel/ivpu: Add initial support for VPU 4")
Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230925121137.872158-5-stanislaw.gruszka@linux.intel.com
Diffstat (limited to 'drivers/accel')
| -rw-r--r-- | drivers/accel/ivpu/ivpu_hw_40xx.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/accel/ivpu/ivpu_hw_40xx.c b/drivers/accel/ivpu/ivpu_hw_40xx.c index f4a251a58ca4..87b1085d44cf 100644 --- a/drivers/accel/ivpu/ivpu_hw_40xx.c +++ b/drivers/accel/ivpu/ivpu_hw_40xx.c @@ -57,8 +57,7 @@ #define ICB_0_1_IRQ_MASK ((((u64)ICB_1_IRQ_MASK) << 32) | ICB_0_IRQ_MASK) -#define BUTTRESS_IRQ_MASK ((REG_FLD(VPU_40XX_BUTTRESS_INTERRUPT_STAT, FREQ_CHANGE)) | \ - (REG_FLD(VPU_40XX_BUTTRESS_INTERRUPT_STAT, ATS_ERR)) | \ +#define BUTTRESS_IRQ_MASK ((REG_FLD(VPU_40XX_BUTTRESS_INTERRUPT_STAT, ATS_ERR)) | \ (REG_FLD(VPU_40XX_BUTTRESS_INTERRUPT_STAT, CFI0_ERR)) | \ (REG_FLD(VPU_40XX_BUTTRESS_INTERRUPT_STAT, CFI1_ERR)) | \ (REG_FLD(VPU_40XX_BUTTRESS_INTERRUPT_STAT, IMR0_ERR)) | \ |