diff options
| author | Guy Zadicario <gzadicario@habana.ai> | 2021-10-12 09:30:28 +0200 |
|---|---|---|
| committer | Oded Gabbay <ogabbay@kernel.org> | 2021-12-26 07:59:03 +0100 |
| commit | 90d283b6726fc2e963042b6884951aa81afd0ff7 (patch) | |
| tree | 360425df49ac5d3b2fe2a01f8b07307430e43baf /drivers/misc/habanalabs | |
| parent | habanalabs: revise and document use of boot status flags (diff) | |
| download | linux-90d283b6726fc2e963042b6884951aa81afd0ff7.tar.xz linux-90d283b6726fc2e963042b6884951aa81afd0ff7.zip | |
habanalabs/gaudi: fix debugfs dma channel selection
Do not use a dma channel for debugfs requested transfer if it's
QM is not idle.
Signed-off-by: Guy Zadicario <gzadicario@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Diffstat (limited to 'drivers/misc/habanalabs')
| -rw-r--r-- | drivers/misc/habanalabs/gaudi/gaudi.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c index d2b7ecb45497..92d55a0a10c1 100644 --- a/drivers/misc/habanalabs/gaudi/gaudi.c +++ b/drivers/misc/habanalabs/gaudi/gaudi.c @@ -6430,6 +6430,7 @@ static int gaudi_debugfs_read_dma(struct hl_device *hdev, u64 addr, u32 size, { u32 dma_core_sts0, err_cause, cfg1, size_left, pos, size_to_dma; struct gaudi_device *gaudi = hdev->asic_specific; + u32 qm_glbl_sts0, qm_cgm_sts; u64 dma_offset, qm_offset; dma_addr_t dma_addr; void *kernel_addr; @@ -6454,14 +6455,20 @@ static int gaudi_debugfs_read_dma(struct hl_device *hdev, u64 addr, u32 size, dma_offset = dma_id * DMA_CORE_OFFSET; qm_offset = dma_id * DMA_QMAN_OFFSET; dma_core_sts0 = RREG32(mmDMA0_CORE_STS0 + dma_offset); - is_eng_idle = IS_DMA_IDLE(dma_core_sts0); + qm_glbl_sts0 = RREG32(mmDMA0_QM_GLBL_STS0 + qm_offset); + qm_cgm_sts = RREG32(mmDMA0_QM_CGM_STS + qm_offset); + is_eng_idle = IS_QM_IDLE(qm_glbl_sts0, qm_cgm_sts) && + IS_DMA_IDLE(dma_core_sts0); if (!is_eng_idle) { dma_id = gaudi_dma_assignment[GAUDI_PCI_DMA_2]; dma_offset = dma_id * DMA_CORE_OFFSET; qm_offset = dma_id * DMA_QMAN_OFFSET; dma_core_sts0 = RREG32(mmDMA0_CORE_STS0 + dma_offset); - is_eng_idle = IS_DMA_IDLE(dma_core_sts0); + qm_glbl_sts0 = RREG32(mmDMA0_QM_GLBL_STS0 + qm_offset); + qm_cgm_sts = RREG32(mmDMA0_QM_CGM_STS + qm_offset); + is_eng_idle = IS_QM_IDLE(qm_glbl_sts0, qm_cgm_sts) && + IS_DMA_IDLE(dma_core_sts0); if (!is_eng_idle) { dev_err_ratelimited(hdev->dev, |