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[142.162.112.119]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-8953c03ec54sm8554626d6.37.2026.02.05.17.29.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Feb 2026 17:29:17 -0800 (PST) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1voAer-00000004SyH-0B43; Thu, 05 Feb 2026 21:29:17 -0400 Date: Thu, 5 Feb 2026 21:29:17 -0400 From: Jason Gunthorpe To: Pavan Chebbi Cc: Andy Gospodarek , Saeed Mahameed , michael.chan@broadcom.com, linux-kernel@vger.kernel.org, dave.jiang@intel.com, Jonathan.Cameron@huawei.com, gospo@broadcom.com, selvin.xavier@broadcom.com, leon@kernel.org, kalesh-anakkur.purayil@broadcom.com Subject: Re: [PATCH v3 fwctl 4/5] fwctl/bnxt_fwctl: Add bnxt fwctl device Message-ID: <20260206012917.GC943673@ziepe.ca> References: <20260129155453.3626544-1-pavan.chebbi@broadcom.com> <20260129155453.3626544-5-pavan.chebbi@broadcom.com> <20260205173346.GO2328995@ziepe.ca> <20260205184206.GP2328995@ziepe.ca> <20260206003939.GA943673@ziepe.ca> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Fri, Feb 06, 2026 at 06:54:37AM +0530, Pavan Chebbi wrote: > Does that make the mechanism clear... Nothing you have explained is different than how I understand it. You clearly haven't understood what I'm explaining, please read both my messages over several times until you get it. I will help you one last time. User uses this command: struct hwrm_port_qstats_input { __le16 req_type; __le16 cmpl_ring; __le16 seq_id; __le16 target_id; __le64 resp_addr; __le16 port_id; u8 flags; u8 unused_0[5]; __le64 tx_stat_host_addr; __le64 rx_stat_host_addr; }; It sends the command buffer with tx_stat_host_addr set to 0xBAD It sets num_dma = 0. Explain what happens. Jason