From patchwork Wed Mar 8 15:25:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kalle Valo X-Patchwork-Id: 662127 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C1527C74A44 for ; Wed, 8 Mar 2023 15:25:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231793AbjCHPZf (ORCPT ); Wed, 8 Mar 2023 10:25:35 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41598 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231712AbjCHPZb (ORCPT ); Wed, 8 Mar 2023 10:25:31 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 31776D08D0 for ; Wed, 8 Mar 2023 07:25:29 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id AB26E61868 for ; Wed, 8 Mar 2023 15:25:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5986CC4339B; Wed, 8 Mar 2023 15:25:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1678289128; bh=yPbKVKAGApGaOsxSfqbfmPNFgWvzf0UqkFIDaNWkG9I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WrYb1iI4/l6U8ChMdiGRhJnj6wxAOr6Elm7ZI6m8b9HWJ6vZdcbdjRoF1xniCXwQB /M7VRvn/hkSD+a87xa45v2C4qlGd9yuNjBU52Ahsj224OSzPEuGar1e1lsV0P5AdLH Eudbto2Y5Iaw9lpNUIBM2Jl5z10qel0zQzqBMOkq10oLePAQHkvvb26ZFPvcv8HSJP lLZ0r5pIWFG7RHxF0BJWXsKv8AgoD9fPYC1GEu0MV7jgNPvDUuEZJtbHE6Cz6cVbBI 3+EJg2BIzsG12Dnzeo70wwq+Qdx9NcUiwPfta4euLShSCOirBD7ri9Q1pLOzDSc+v4 I14eB1a+8+JOA== From: Kalle Valo To: mhi@lists.linux.dev Cc: ath11k@lists.infradead.org, linux-wireless@vger.kernel.org Subject: [PATCH v2 2/3] wifi: ath11k: qmi: refactor ath11k_qmi_m3_load() Date: Wed, 8 Mar 2023 17:25:21 +0200 Message-Id: <20230308152522.6728-3-kvalo@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230308152522.6728-1-kvalo@kernel.org> References: <20230308152522.6728-1-kvalo@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Kalle Valo Simple refactoring to make it easier to add firmware-2.bin support in the following patch. Earlier ath11k_qmi_m3_load() supported changing m3.bin contents while ath11k is running. But that's not going to actually work, m3.bin is supposed to the be same during the lifetime of ath11k, for example we don't support changing the firmware capabilities on the fly. Due to this ath11k requests m3.bin firmware file first and only then checks m3_mem->vaddr, so we are basically requesting the firmware file even if it's not needed. Reverse the code so that m3_mem buffer is checked first, and only if it doesn't exist, then m3.bin is requested from user space. Checking for m3_mem->size is redundant when m3_mem->vaddr is NULL, we would not be able to use the buffer in that case. So remove the check for size. Simplify the exit handling and use 'goto out'. Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.9 Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath11k/qmi.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/ath/ath11k/qmi.c b/drivers/net/wireless/ath/ath11k/qmi.c index ab923e24b0a9..5bc98180aed4 100644 --- a/drivers/net/wireless/ath/ath11k/qmi.c +++ b/drivers/net/wireless/ath/ath11k/qmi.c @@ -2493,6 +2493,10 @@ static int ath11k_qmi_m3_load(struct ath11k_base *ab) char path[100]; int ret; + if (m3_mem->vaddr) + /* m3 firmware buffer is already available in the DMA buffer */ + return 0; + fw = ath11k_core_firmware_request(ab, ATH11K_M3_FILE); if (IS_ERR(fw)) { ret = PTR_ERR(fw); @@ -2502,25 +2506,25 @@ static int ath11k_qmi_m3_load(struct ath11k_base *ab) return ret; } - if (m3_mem->vaddr || m3_mem->size) - goto skip_m3_alloc; - m3_mem->vaddr = dma_alloc_coherent(ab->dev, fw->size, &m3_mem->paddr, GFP_KERNEL); if (!m3_mem->vaddr) { ath11k_err(ab, "failed to allocate memory for M3 with size %zu\n", fw->size); - release_firmware(fw); - return -ENOMEM; + ret = -ENOMEM; + goto out; } -skip_m3_alloc: memcpy(m3_mem->vaddr, fw->data, fw->size); m3_mem->size = fw->size; + + ret = 0; + +out: release_firmware(fw); - return 0; + return ret; } static void ath11k_qmi_m3_free(struct ath11k_base *ab)