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From:   Andy Gospodarek <andrew.gospodarek@broadcom.com>
Date:   Wed, 27 Jul 2022 08:29:30 -0400
To:     Vikas Gupta <vikas.gupta@broadcom.com>
Cc:     jiri@nvidia.com, kuba@kernel.org, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, davem@davemloft.net,
        dsahern@kernel.org, stephen@networkplumber.org,
        edumazet@google.com, pabeni@redhat.com, ast@kernel.org,
        leon@kernel.org, linux-doc@vger.kernel.org, corbet@lwn.net,
        michael.chan@broadcom.com, andrew.gospodarek@broadcom.com
Subject: Re: [PATCH net-next v8 2/2] bnxt_en: implement callbacks for devlink
 selftests
Message-ID: <YuEvqlH7kCzLw6zb@C02YVCJELVCG>
References: <20220727092035.35938-1-vikas.gupta@broadcom.com>
 <20220727092035.35938-3-vikas.gupta@broadcom.com>
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--000000000000fba5d605e4c89193
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On Wed, Jul 27, 2022 at 02:50:35PM +0530, Vikas Gupta wrote:
> From: vikas <vikas.gupta@broadcom.com>
> 
> Add callbacks
> =============
> .selftest_check: returns true for flash selftest.
> .selftest_run: runs a flash selftest.
> 
> Also, refactor NVM APIs so that they can be
> used with devlink and ethtool both.
> 
> Signed-off-by: vikas <vikas.gupta@broadcom.com>
> Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>

Reviewed-by: Andy Gospodarek <gospo@broadcom.com>

> ---
>  .../net/ethernet/broadcom/bnxt/bnxt_devlink.c | 61 +++++++++++++++++++
>  .../net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 24 ++++----
>  .../net/ethernet/broadcom/bnxt/bnxt_ethtool.h | 12 ++++
>  3 files changed, 85 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
> index 6b3d4f4c2a75..14df8cfc2946 100644
> --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
> +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
> @@ -20,6 +20,8 @@
>  #include "bnxt_ulp.h"
>  #include "bnxt_ptp.h"
>  #include "bnxt_coredump.h"
> +#include "bnxt_nvm_defs.h"
> +#include "bnxt_ethtool.h"
>  
>  static void __bnxt_fw_recover(struct bnxt *bp)
>  {
> @@ -610,6 +612,63 @@ static int bnxt_dl_reload_up(struct devlink *dl, enum devlink_reload_action acti
>  	return rc;
>  }
>  
> +static bool bnxt_nvm_test(struct bnxt *bp, struct netlink_ext_ack *extack)
> +{
> +	u32 datalen;
> +	u16 index;
> +	u8 *buf;
> +
> +	if (bnxt_find_nvram_item(bp->dev, BNX_DIR_TYPE_VPD,
> +				 BNX_DIR_ORDINAL_FIRST, BNX_DIR_EXT_NONE,
> +				 &index, NULL, &datalen) || !datalen) {
> +		NL_SET_ERR_MSG_MOD(extack, "nvm test vpd entry error");
> +		return false;
> +	}
> +
> +	buf = kzalloc(datalen, GFP_KERNEL);
> +	if (!buf) {
> +		NL_SET_ERR_MSG_MOD(extack, "insufficient memory for nvm test");
> +		return false;
> +	}
> +
> +	if (bnxt_get_nvram_item(bp->dev, index, 0, datalen, buf)) {
> +		NL_SET_ERR_MSG_MOD(extack, "nvm test vpd read error");
> +		goto err;
> +	}
> +
> +	if (bnxt_flash_nvram(bp->dev, BNX_DIR_TYPE_VPD, BNX_DIR_ORDINAL_FIRST,
> +			     BNX_DIR_EXT_NONE, 0, 0, buf, datalen)) {
> +		NL_SET_ERR_MSG_MOD(extack, "nvm test vpd write error");
> +		goto err;
> +	}
> +
> +	return true;
> +
> +err:
> +	kfree(buf);
> +	return false;
> +}
> +
> +static bool bnxt_dl_selftest_check(struct devlink *dl, unsigned int id,
> +				   struct netlink_ext_ack *extack)
> +{
> +	return id == DEVLINK_ATTR_SELFTEST_ID_FLASH;
> +}
> +
> +static enum devlink_selftest_status bnxt_dl_selftest_run(struct devlink *dl,
> +							 unsigned int id,
> +							 struct netlink_ext_ack *extack)
> +{
> +	struct bnxt *bp = bnxt_get_bp_from_dl(dl);
> +
> +	if (id == DEVLINK_ATTR_SELFTEST_ID_FLASH)
> +		return bnxt_nvm_test(bp, extack) ?
> +				DEVLINK_SELFTEST_STATUS_PASS :
> +				DEVLINK_SELFTEST_STATUS_FAIL;
> +
> +	return DEVLINK_SELFTEST_STATUS_SKIP;
> +}
> +
>  static const struct devlink_ops bnxt_dl_ops = {
>  #ifdef CONFIG_BNXT_SRIOV
>  	.eswitch_mode_set = bnxt_dl_eswitch_mode_set,
> @@ -622,6 +681,8 @@ static const struct devlink_ops bnxt_dl_ops = {
>  	.reload_limits	  = BIT(DEVLINK_RELOAD_LIMIT_NO_RESET),
>  	.reload_down	  = bnxt_dl_reload_down,
>  	.reload_up	  = bnxt_dl_reload_up,
> +	.selftest_check	  = bnxt_dl_selftest_check,
> +	.selftest_run	  = bnxt_dl_selftest_run,
>  };
>  
>  static const struct devlink_ops bnxt_vf_dl_ops;
> diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
> index 7191e5d74208..87eb5362ad70 100644
> --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
> +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
> @@ -2176,14 +2176,14 @@ static void bnxt_print_admin_err(struct bnxt *bp)
>  	netdev_info(bp->dev, "PF does not have admin privileges to flash or reset the device\n");
>  }
>  
> -static int bnxt_find_nvram_item(struct net_device *dev, u16 type, u16 ordinal,
> -				u16 ext, u16 *index, u32 *item_length,
> -				u32 *data_length);
> +int bnxt_find_nvram_item(struct net_device *dev, u16 type, u16 ordinal,
> +			 u16 ext, u16 *index, u32 *item_length,
> +			 u32 *data_length);
>  
> -static int bnxt_flash_nvram(struct net_device *dev, u16 dir_type,
> -			    u16 dir_ordinal, u16 dir_ext, u16 dir_attr,
> -			    u32 dir_item_len, const u8 *data,
> -			    size_t data_len)
> +int bnxt_flash_nvram(struct net_device *dev, u16 dir_type,
> +		     u16 dir_ordinal, u16 dir_ext, u16 dir_attr,
> +		     u32 dir_item_len, const u8 *data,
> +		     size_t data_len)
>  {
>  	struct bnxt *bp = netdev_priv(dev);
>  	struct hwrm_nvm_write_input *req;
> @@ -2836,8 +2836,8 @@ static int bnxt_get_nvram_directory(struct net_device *dev, u32 len, u8 *data)
>  	return rc;
>  }
>  
> -static int bnxt_get_nvram_item(struct net_device *dev, u32 index, u32 offset,
> -			       u32 length, u8 *data)
> +int bnxt_get_nvram_item(struct net_device *dev, u32 index, u32 offset,
> +			u32 length, u8 *data)
>  {
>  	struct bnxt *bp = netdev_priv(dev);
>  	int rc;
> @@ -2871,9 +2871,9 @@ static int bnxt_get_nvram_item(struct net_device *dev, u32 index, u32 offset,
>  	return rc;
>  }
>  
> -static int bnxt_find_nvram_item(struct net_device *dev, u16 type, u16 ordinal,
> -				u16 ext, u16 *index, u32 *item_length,
> -				u32 *data_length)
> +int bnxt_find_nvram_item(struct net_device *dev, u16 type, u16 ordinal,
> +			 u16 ext, u16 *index, u32 *item_length,
> +			 u32 *data_length)
>  {
>  	struct hwrm_nvm_find_dir_entry_output *output;
>  	struct hwrm_nvm_find_dir_entry_input *req;
> diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
> index a59284215e78..a8ecef8ab82c 100644
> --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
> +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
> @@ -58,5 +58,17 @@ int bnxt_flash_package_from_fw_obj(struct net_device *dev, const struct firmware
>  int bnxt_get_pkginfo(struct net_device *dev, char *ver, int size);
>  void bnxt_ethtool_init(struct bnxt *bp);
>  void bnxt_ethtool_free(struct bnxt *bp);
> +int bnxt_find_nvram_item(struct net_device *dev, u16 type, u16 ordinal,
> +			 u16 ext, u16 *index, u32 *item_length,
> +			 u32 *data_length);
> +int bnxt_find_nvram_item(struct net_device *dev, u16 type, u16 ordinal,
> +			 u16 ext, u16 *index, u32 *item_length,
> +			 u32 *data_length);
> +int bnxt_flash_nvram(struct net_device *dev, u16 dir_type,
> +		     u16 dir_ordinal, u16 dir_ext, u16 dir_attr,
> +		     u32 dir_item_len, const u8 *data,
> +		     size_t data_len);
> +int bnxt_get_nvram_item(struct net_device *dev, u32 index, u32 offset,
> +			u32 length, u8 *data);
>  
>  #endif
> -- 
> 2.31.1
> 


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