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accel/habanalabs: disable EQ interrupt after disabling pci

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When sending disable pci msg towards firmware, there is a
possibility that an EQ packet is already pending,
disabling EQ interrupt will prevent this from happening.
The interrupt will be re-enabled after reset.

Signed-off-by: Tal Cohen <talcohen@habana.ai>
Reviewed-by: Ofir Bitton <obitton@habana.ai>
Signed-off-by: Ofir Bitton <obitton@habana.ai>
This commit is contained in:
Tal Cohen
2024-04-03 13:09:42 +03:00
committed by Ofir Bitton
parent 52fbab90ed
commit 61f4f624ea
1 changed files with 4 additions and 3 deletions
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7
drivers/accel/habanalabs/common/device.c
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@@ -1502,10 +1502,11 @@ static void send_disable_pci_access(struct hl_device *hdev, u32 flags)
if (hl_fw_send_pci_access_msg(hdev, CPUCP_PACKET_DISABLE_PCI_ACCESS, 0x0))
return;
/* verify that last EQs are handled before disabled is set */
/* disable_irq also generates sync irq, this verifies that last EQs are handled
* before disabled is set. The IRQ will be enabled again in request_irq call.
*/
if (hdev->cpu_queues_enable)
synchronize_irq(pci_irq_vector(hdev->pdev,
hdev->asic_prop.eq_interrupt_id));
disable_irq(pci_irq_vector(hdev->pdev, hdev->asic_prop.eq_interrupt_id));
}
}