linux-kernel - Re: [PATCH 12/12] habanalabs: enable gaudi2 code in driver

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Date:   Tue, 28 Jun 2022 08:29:07 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Oded Gabbay <ogabbay@...nel.org>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH 12/12] habanalabs: enable gaudi2 code in driver

On Mon, Jun 27, 2022 at 11:26:20PM +0300, Oded Gabbay wrote:
> Enable the Gaudi2 ASIC code in the pci probe callback of the driver so
> the driver will handle Gaudi2 ASICs.
> 
> Add the PCI ID to the PCI table and add the ASIC enum value to all
> relevant places.
> 
> Fixup the device parameters initialization for Gaudi2.
> 
> Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
> ---
>  drivers/misc/habanalabs/common/device.c       |  8 +++
>  drivers/misc/habanalabs/common/habanalabs.h   | 13 ++--
>  .../misc/habanalabs/common/habanalabs_drv.c   | 67 +++++++++++++++----
>  drivers/misc/habanalabs/common/sysfs.c        |  6 ++
>  4 files changed, 77 insertions(+), 17 deletions(-)
> 
> diff --git a/drivers/misc/habanalabs/common/device.c b/drivers/misc/habanalabs/common/device.c
> index 38cf2f1659ee..a4656eac495e 100644
> --- a/drivers/misc/habanalabs/common/device.c
> +++ b/drivers/misc/habanalabs/common/device.c
> @@ -645,6 +645,14 @@ static int device_early_init(struct hl_device *hdev)
>  		gaudi_set_asic_funcs(hdev);
>  		strscpy(hdev->asic_name, "GAUDI SEC", sizeof(hdev->asic_name));
>  		break;
> +	case ASIC_GAUDI2:
> +		gaudi2_set_asic_funcs(hdev);
> +		strscpy(hdev->asic_name, "GAUDI2", sizeof(hdev->asic_name));
> +		break;
> +	case ASIC_GAUDI2_SEC:
> +		gaudi2_set_asic_funcs(hdev);
> +		strscpy(hdev->asic_name, "GAUDI2 SEC", sizeof(hdev->asic_name));
> +		break;
>  	default:
>  		dev_err(hdev->dev, "Unrecognized ASIC type %d\n",
>  			hdev->asic_type);
> diff --git a/drivers/misc/habanalabs/common/habanalabs.h b/drivers/misc/habanalabs/common/habanalabs.h
> index 4537845658f8..587b1c537115 100644
> --- a/drivers/misc/habanalabs/common/habanalabs.h
> +++ b/drivers/misc/habanalabs/common/habanalabs.h
> @@ -3033,7 +3033,6 @@ struct hl_reset_info {
>   * @disabled: is device disabled.
>   * @late_init_done: is late init stage was done during initialization.
>   * @hwmon_initialized: is H/W monitor sensors was initialized.
> - * @heartbeat: is heartbeat sanity check towards CPU-CP enabled.

You remove this field, but you still keep it in the structure, you just
move it later down to the bottom for some reason:

>   * @reset_on_lockup: true if a reset should be done in case of stuck CS, false
>   *                   otherwise.
>   * @dram_default_page_mapping: is DRAM default page mapping enabled.
> @@ -3066,6 +3065,10 @@ struct hl_reset_info {
>   * @is_compute_ctx_active: Whether there is an active compute context executing.
>   * @compute_ctx_in_release: true if the current compute context is being released.
>   * @supports_mmu_prefetch: true if prefetch is supported, otherwise false.
> + * @reset_upon_device_release: reset the device when the user closes the file descriptor of the
> + *                             device.
> + * @skip_iatu_for_unsecured_device: skip the device PCI controller initialization when working
> + *                                  with device that runs f/w that is not secured.
>   */
>  struct hl_device {
>  	struct pci_dev			*pdev;
> @@ -3175,7 +3178,6 @@ struct hl_device {
>  	u8				disabled;
>  	u8				late_init_done;
>  	u8				hwmon_initialized;
> -	u8				heartbeat;
>  	u8				reset_on_lockup;
>  	u8				dram_default_page_mapping;
>  	u8				memory_scrub;
> @@ -3199,6 +3201,8 @@ struct hl_device {
>  	u8				is_compute_ctx_active;
>  	u8				compute_ctx_in_release;
>  	u8				supports_mmu_prefetch;
> +	u8				reset_upon_device_release;
> +	u8				skip_iatu_for_unsecured_device;
>  
>  	/* Parameters for bring-up */
>  	u64				nic_ports_mask;
> @@ -3212,11 +3216,9 @@ struct hl_device {
>  	u8				dram_scrambler_enable;
>  	u8				hard_reset_on_fw_events;
>  	u8				bmc_enable;
> -	u8				rl_enable;
>  	u8				reset_on_preboot_fail;
> -	u8				reset_upon_device_release;
> -	u8				skip_iatu_for_unsecured_device;
>  	u8				reset_if_device_not_idle;
> +	u8				heartbeat;
>  };

Did you mean to do that?

thanks,

greg k-h