diff options
| author | Wachowski, Karol <karol.wachowski@intel.com> | 2024-01-26 15:27:58 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-03-01 15:34:55 +0300 |
| commit | e11aa132160c02f45e90affe866d7b79cba8cfd6 (patch) | |
| tree | abac5704f03eac7a0d3ebb5e1768d422d4a88bd7 /drivers | |
| parent | d382f733c8ba207a9d2c1fe130a828e376222466 (diff) | |
| download | linux-e11aa132160c02f45e90affe866d7b79cba8cfd6.tar.xz | |
accel/ivpu: Force snooping for MMU writes
[ Upstream commit c9da9a1f17bf4fa96b115950fd389c917b583c1c ]
Set AW_SNOOP_OVERRIDE bit in VPU_37/40XX_HOST_IF_TCU_PTW_OVERRIDES
to force snooping for MMU write accesses (setting event queue events).
MMU event queue buffer is the only buffer written by MMU and
mapped as write-back which break cache coherency. Force write
transactions to be snooped solving the problem.
Signed-off-by: Wachowski, Karol <karol.wachowski@intel.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240126122804.2169129-2-jacek.lawrynowicz@linux.intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/accel/ivpu/ivpu_hw_37xx.c | 2 | ||||
| -rw-r--r-- | drivers/accel/ivpu/ivpu_hw_40xx.c | 2 | ||||
| -rw-r--r-- | drivers/accel/ivpu/ivpu_mmu.c | 3 |
3 files changed, 2 insertions, 5 deletions
diff --git a/drivers/accel/ivpu/ivpu_hw_37xx.c b/drivers/accel/ivpu/ivpu_hw_37xx.c index ddf03498fd4c..c0de7c0c991f 100644 --- a/drivers/accel/ivpu/ivpu_hw_37xx.c +++ b/drivers/accel/ivpu/ivpu_hw_37xx.c @@ -562,7 +562,7 @@ static void ivpu_boot_no_snoop_enable(struct ivpu_device *vdev) u32 val = REGV_RD32(VPU_37XX_HOST_IF_TCU_PTW_OVERRIDES); val = REG_SET_FLD(VPU_37XX_HOST_IF_TCU_PTW_OVERRIDES, NOSNOOP_OVERRIDE_EN, val); - val = REG_SET_FLD(VPU_37XX_HOST_IF_TCU_PTW_OVERRIDES, AW_NOSNOOP_OVERRIDE, val); + val = REG_CLR_FLD(VPU_37XX_HOST_IF_TCU_PTW_OVERRIDES, AW_NOSNOOP_OVERRIDE, val); val = REG_SET_FLD(VPU_37XX_HOST_IF_TCU_PTW_OVERRIDES, AR_NOSNOOP_OVERRIDE, val); REGV_WR32(VPU_37XX_HOST_IF_TCU_PTW_OVERRIDES, val); diff --git a/drivers/accel/ivpu/ivpu_hw_40xx.c b/drivers/accel/ivpu/ivpu_hw_40xx.c index 03600a7a5aca..65c6a82bb13f 100644 --- a/drivers/accel/ivpu/ivpu_hw_40xx.c +++ b/drivers/accel/ivpu/ivpu_hw_40xx.c @@ -523,7 +523,7 @@ static void ivpu_boot_no_snoop_enable(struct ivpu_device *vdev) u32 val = REGV_RD32(VPU_40XX_HOST_IF_TCU_PTW_OVERRIDES); val = REG_SET_FLD(VPU_40XX_HOST_IF_TCU_PTW_OVERRIDES, SNOOP_OVERRIDE_EN, val); - val = REG_CLR_FLD(VPU_40XX_HOST_IF_TCU_PTW_OVERRIDES, AW_SNOOP_OVERRIDE, val); + val = REG_SET_FLD(VPU_40XX_HOST_IF_TCU_PTW_OVERRIDES, AW_SNOOP_OVERRIDE, val); val = REG_CLR_FLD(VPU_40XX_HOST_IF_TCU_PTW_OVERRIDES, AR_SNOOP_OVERRIDE, val); REGV_WR32(VPU_40XX_HOST_IF_TCU_PTW_OVERRIDES, val); diff --git a/drivers/accel/ivpu/ivpu_mmu.c b/drivers/accel/ivpu/ivpu_mmu.c index baefaf7bb3cb..d04a28e05248 100644 --- a/drivers/accel/ivpu/ivpu_mmu.c +++ b/drivers/accel/ivpu/ivpu_mmu.c @@ -491,7 +491,6 @@ static int ivpu_mmu_reset(struct ivpu_device *vdev) mmu->cmdq.cons = 0; memset(mmu->evtq.base, 0, IVPU_MMU_EVTQ_SIZE); - clflush_cache_range(mmu->evtq.base, IVPU_MMU_EVTQ_SIZE); mmu->evtq.prod = 0; mmu->evtq.cons = 0; @@ -805,8 +804,6 @@ static u32 *ivpu_mmu_get_event(struct ivpu_device *vdev) if (!CIRC_CNT(IVPU_MMU_Q_IDX(evtq->prod), IVPU_MMU_Q_IDX(evtq->cons), IVPU_MMU_Q_COUNT)) return NULL; - clflush_cache_range(evt, IVPU_MMU_EVTQ_CMD_SIZE); - evtq->cons = (evtq->cons + 1) & IVPU_MMU_Q_WRAP_MASK; REGV_WR32(VPU_37XX_HOST_MMU_EVTQ_CONS_SEC, evtq->cons); |