habanalabs: prevent read/write from/to the device during hard reset
During hard reset we should not access the device except of necessary reset operations because the device might be stuck or unresponsive. Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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@ -4870,7 +4870,8 @@ static void goya_mmu_invalidate_cache(struct hl_device *hdev, bool is_hard,
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u32 status, timeout_usec;
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int rc;
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if (!(goya->hw_cap_initialized & HW_CAP_MMU))
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if (!(goya->hw_cap_initialized & HW_CAP_MMU) ||
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hdev->hard_reset_pending)
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return;
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/* no need in L1 only invalidation in Goya */
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@ -4909,7 +4910,8 @@ static void goya_mmu_invalidate_cache_range(struct hl_device *hdev,
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u32 status, timeout_usec, inv_data, pi;
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int rc;
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if (!(goya->hw_cap_initialized & HW_CAP_MMU))
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if (!(goya->hw_cap_initialized & HW_CAP_MMU) ||
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hdev->hard_reset_pending)
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return;
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/* no need in L1 only invalidation in Goya */
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