From patchwork Sun Dec 26 15:36:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hector Martin X-Patchwork-Id: 12699466 X-Patchwork-Delegate: kvalo@adurom.com 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 2ECE4C433FE for ; Sun, 26 Dec 2021 15:40:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234229AbhLZPkf (ORCPT ); Sun, 26 Dec 2021 10:40:35 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35264 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232545AbhLZPkX (ORCPT ); Sun, 26 Dec 2021 10:40:23 -0500 Received: from mail.marcansoft.com (marcansoft.com [IPv6:2a01:298:fe:f::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 08674C06175B; Sun, 26 Dec 2021 07:40:23 -0800 (PST) Received: from [127.0.0.1] (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: hector@marcansoft.com) by mail.marcansoft.com (Postfix) with ESMTPSA id 30CBE44B24; Sun, 26 Dec 2021 15:40:13 +0000 (UTC) From: Hector Martin To: Kalle Valo , "David S. Miller" , Jakub Kicinski , Rob Herring , "Rafael J. Wysocki" , Len Brown , Arend van Spriel , Franky Lin , Hante Meuleman , Chi-hsien Lin , Wright Feng , Chung-hsien Hsu Cc: Hector Martin , Sven Peter , Alyssa Rosenzweig , Mark Kettenis , =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= , Pieter-Paul Giesberts , Linus Walleij , Hans de Goede , "John W. Linville" , "Daniel (Deognyoun) Kim" , "brian m. carlson" , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, brcm80211-dev-list.pdl@broadcom.com, SHA-cyfmac-dev-list@infineon.com Subject: [PATCH 28/34] brcmfmac: pcie: Replace brcmf_pcie_copy_mem_todev with memcpy_toio Date: Mon, 27 Dec 2021 00:36:18 +0900 Message-Id: <20211226153624.162281-29-marcan@marcan.st> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211226153624.162281-1-marcan@marcan.st> References: <20211226153624.162281-1-marcan@marcan.st> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org The alignment check was wrong (e.g. & 4 instead of & 3), and the logic was also inefficient if the length was not a multiple of 4, since it would needlessly fall back to copying the entire buffer bytewise. We already have a perfectly good memcpy_toio function, so just call that instead of rolling our own copy logic here. brcmf_pcie_init_ringbuffers was already using it anyway. Fixes: 9e37f045d5e7 ("brcmfmac: Adding PCIe bus layer support.") Signed-off-by: Hector Martin Reviewed-by: Linus Walleij --- .../broadcom/brcm80211/brcmfmac/pcie.c | 53 +++---------------- 1 file changed, 6 insertions(+), 47 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c index 0d073087b01b..6cf55027e0d7 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include @@ -559,47 +560,6 @@ brcmf_pcie_write_ram32(struct brcmf_pciedev_info *devinfo, u32 mem_offset, } -static void -brcmf_pcie_copy_mem_todev(struct brcmf_pciedev_info *devinfo, u32 mem_offset, - void *srcaddr, u32 len) -{ - void __iomem *address = devinfo->tcm + mem_offset; - __le32 *src32; - __le16 *src16; - u8 *src8; - - if (((ulong)address & 4) || ((ulong)srcaddr & 4) || (len & 4)) { - if (((ulong)address & 2) || ((ulong)srcaddr & 2) || (len & 2)) { - src8 = (u8 *)srcaddr; - while (len) { - iowrite8(*src8, address); - address++; - src8++; - len--; - } - } else { - len = len / 2; - src16 = (__le16 *)srcaddr; - while (len) { - iowrite16(le16_to_cpu(*src16), address); - address += 2; - src16++; - len--; - } - } - } else { - len = len / 4; - src32 = (__le32 *)srcaddr; - while (len) { - iowrite32(le32_to_cpu(*src32), address); - address += 4; - src32++; - len--; - } - } -} - - static void brcmf_pcie_copy_dev_tomem(struct brcmf_pciedev_info *devinfo, u32 mem_offset, void *dstaddr, u32 len) @@ -1697,8 +1657,8 @@ static int brcmf_pcie_download_fw_nvram(struct brcmf_pciedev_info *devinfo, return err; brcmf_dbg(PCIE, "Download FW %s\n", devinfo->fw_name); - brcmf_pcie_copy_mem_todev(devinfo, devinfo->ci->rambase, - (void *)fw->data, fw->size); + memcpy_toio(devinfo->tcm + devinfo->ci->rambase, + (void *)fw->data, fw->size); resetintr = get_unaligned_le32(fw->data); release_firmware(fw); @@ -1719,7 +1679,7 @@ static int brcmf_pcie_download_fw_nvram(struct brcmf_pciedev_info *devinfo, brcmf_dbg(PCIE, "Download NVRAM %s\n", devinfo->nvram_name); address = devinfo->ci->rambase + devinfo->ci->ramsize - nvram_len; - brcmf_pcie_copy_mem_todev(devinfo, address, nvram, nvram_len); + memcpy_toio(devinfo->tcm + address, nvram, nvram_len); brcmf_fw_nvram_free(nvram); /* Some Apple chips/firmwares expect a buffer of random data @@ -1728,13 +1688,12 @@ static int brcmf_pcie_download_fw_nvram(struct brcmf_pciedev_info *devinfo, brcmf_dbg(PCIE, "Download random seed\n"); address -= sizeof(footer); - brcmf_pcie_copy_mem_todev(devinfo, address, &footer, - sizeof(footer)); + memcpy_toio(devinfo->tcm + address, &footer, sizeof(footer)); address -= rand_len; randbuf = kzalloc(rand_len, GFP_KERNEL); get_random_bytes(randbuf, rand_len); - brcmf_pcie_copy_mem_todev(devinfo, address, randbuf, rand_len); + memcpy_toio(devinfo->tcm + address, randbuf, rand_len); kfree(randbuf); } else { brcmf_dbg(PCIE, "No matching NVRAM file found %s\n",