From patchwork Tue Aug 15 19:01:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 136089 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b82d:0:b0:3f2:4152:657d with SMTP id z13csp1919416vqi; Sat, 19 Aug 2023 02:04:33 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGX8bwD1ukFL5puh2ZOT4mHUjL8hiAi1DGPEU1y12rKhm/t7FoXyGawdVBBnpWozN5t6DG7 X-Received: by 2002:a05:6a00:148f:b0:641:3bf8:6514 with SMTP id v15-20020a056a00148f00b006413bf86514mr1869012pfu.10.1692435873275; Sat, 19 Aug 2023 02:04:33 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1692435873; cv=none; d=google.com; s=arc-20160816; b=gJ7HgyTld5Pk1ZYv98R/oQpBdwNYHSaNCvgr+09QHs+E7/OccwW4BuGd5+4xFOtXEN iO214SroRP409lIzCwMIq811cqYieOiQuokgfeH9ZXLq4v/58QsdtSzgZ1NgL6iNoQkh lhkXvB/W+MeHBo7GrDWRK5LvnwR9qbswPigo+0Dc2oiMOAyvHxNNx9AsHcMmJBpLY/zO 9SbY3yh+YoLNzvujS2nFtwRZvBHImWcU4YjIanm91gqEX5XTuzuL1YqMDDw7LUI8zSOH nPx4JctfXQCf/sOj6RHh4XRbdc3IrDgrZqszlMywKmlOb1lqj4lhZyCanIG0jrehqSyd v1mg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature:dkim-signature; bh=UCVs2lrJV8zC/zCpUs0xKreUnK1an8pHd+lADqQDEu8=; fh=DP61/jJCya+1W1X7P2vK6pKSD4lkczCotBkmA6jh/us=; b=XlzM5aCRqdDJh6TuQpWqG4Bb+fpSzyP5BqnrVsyfCu53r7h8w07mOluCZe0BK6BvjD a2TuheSYxROSDkngEl+yYdLyNwQPzNCEs4EMlraIyAK8FRABnDg/x8BoyMRhlwg2XDsB vR3BjtbKmqicZoRNbPP8k74bd3pEek0S5KAwURgVB+oaB0uCSEKEmdNveDQ4cS4aZ+qh BvgcioSNtTNSFf73T3ejW8U8VDFWCrglZHonAXXQRqiZt/JsOui62a7O0b28bW8YfGax T4LUaEIVPLWNf/wodzjRexO7BpoEZ7IUafWBxW0rJhRDvpRhblGraI4CsXOh/f2Dvwys SNqQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@suse.de header.s=susede2_rsa header.b="dWpc/5WW"; dkim=neutral (no key) header.i=@suse.de header.s=susede2_ed25519; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=suse.de Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net. [2620:137:e000::1:18]) by mx.google.com with ESMTPS id v202-20020a6361d3000000b00565f90ed852si3044942pgb.805.2023.08.19.02.04.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Aug 2023 02:04:33 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; dkim=pass header.i=@suse.de header.s=susede2_rsa header.b="dWpc/5WW"; dkim=neutral (no key) header.i=@suse.de header.s=susede2_ed25519; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=suse.de Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 3EBEF1B303; Sat, 19 Aug 2023 01:26:23 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239811AbjHOTDI (ORCPT + 99 others); Tue, 15 Aug 2023 15:03:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57168 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239784AbjHOTCk (ORCPT ); Tue, 15 Aug 2023 15:02:40 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B055A2689 for ; Tue, 15 Aug 2023 12:02:19 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 1D64E1F8CC; Tue, 15 Aug 2023 19:01:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1692126108; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=UCVs2lrJV8zC/zCpUs0xKreUnK1an8pHd+lADqQDEu8=; b=dWpc/5WWLuNXxLGjXvAzH+6PaF/36QRVNCyebWMMP2mSbiNuAR3AA25ZLZHn1k20i4AT7P yytqCE4pJc12oVHaC/dKyiCokCEX7qiHBt49kNIp6RHVSy5rZ6YyBuOqR0gxaASuibiPSJ yXdl10kRkhEjZzmEDS6iOZagxEnrUSo= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1692126108; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=UCVs2lrJV8zC/zCpUs0xKreUnK1an8pHd+lADqQDEu8=; b=JWMviMul9KnRRD4eXpKDVm1dN9Obgd77w/S0ARyhavGWB9611pmDlqEtmNeUR40y9jjoZI oFDg5VZ+elu5PQCA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id F260A1353E; Tue, 15 Aug 2023 19:01:47 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id IJo4OpvL22QTVAAAMHmgww (envelope-from ); Tue, 15 Aug 2023 19:01:47 +0000 From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org, Takashi Iwai Subject: [PATCH v2 06/25] ALSA: emu8000: Convert to generic PCM copy ops Date: Tue, 15 Aug 2023 21:01:17 +0200 Message-Id: <20230815190136.8987-7-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230815190136.8987-1-tiwai@suse.de> References: <20230815190136.8987-1-tiwai@suse.de> MIME-Version: 1.0 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1774647637847108076 X-GMAIL-MSGID: 1774647637847108076 This patch converts the SB Emu8000 driver code to use the new unified PCM copy callback. The conversion is a bit complicated because of many open code in emu8000_pcm.c. GET_VAL() and LOOP_WRITE() macros were rewritten / simplified with copy_from_iter(). As copy_from_iter() updates the internal offset value, we can drop the corresponding part, too. Signed-off-by: Takashi Iwai --- sound/isa/sb/emu8000_pcm.c | 74 +++++++++----------------------------- 1 file changed, 16 insertions(+), 58 deletions(-) diff --git a/sound/isa/sb/emu8000_pcm.c b/sound/isa/sb/emu8000_pcm.c index c8afc4347c54..c05935c2edc4 100644 --- a/sound/isa/sb/emu8000_pcm.c +++ b/sound/isa/sb/emu8000_pcm.c @@ -409,39 +409,25 @@ do { \ return -EAGAIN;\ } while (0) -enum { - COPY_USER, COPY_KERNEL, FILL_SILENCE, -}; - -#define GET_VAL(sval, buf, mode) \ +#define GET_VAL(sval, iter) \ do { \ - switch (mode) { \ - case FILL_SILENCE: \ + if (!iter) \ sval = 0; \ - break; \ - case COPY_KERNEL: \ - sval = *buf++; \ - break; \ - default: \ - if (get_user(sval, (unsigned short __user *)buf)) \ - return -EFAULT; \ - buf++; \ - break; \ - } \ + else if (copy_from_iter(&sval, 2, iter) != 2) \ + return -EFAULT; \ } while (0) #ifdef USE_NONINTERLEAVE -#define LOOP_WRITE(rec, offset, _buf, count, mode) \ +#define LOOP_WRITE(rec, offset, iter, count) \ do { \ struct snd_emu8000 *emu = (rec)->emu; \ - unsigned short *buf = (__force unsigned short *)(_buf); \ snd_emu8000_write_wait(emu, 1); \ EMU8000_SMALW_WRITE(emu, offset); \ while (count > 0) { \ unsigned short sval; \ CHECK_SCHEDULER(); \ - GET_VAL(sval, buf, mode); \ + GET_VAL(sval, iter); \ EMU8000_SMLD_WRITE(emu, sval); \ count--; \ } \ @@ -450,27 +436,14 @@ enum { /* copy one channel block */ static int emu8k_pcm_copy(struct snd_pcm_substream *subs, int voice, unsigned long pos, - void __user *src, unsigned long count) + struct iov_iter *src, unsigned long count) { struct snd_emu8k_pcm *rec = subs->runtime->private_data; /* convert to word unit */ pos = (pos << 1) + rec->loop_start[voice]; count <<= 1; - LOOP_WRITE(rec, pos, src, count, COPY_USER); - return 0; -} - -static int emu8k_pcm_copy_kernel(struct snd_pcm_substream *subs, - int voice, unsigned long pos, - void *src, unsigned long count) -{ - struct snd_emu8k_pcm *rec = subs->runtime->private_data; - - /* convert to word unit */ - pos = (pos << 1) + rec->loop_start[voice]; - count <<= 1; - LOOP_WRITE(rec, pos, src, count, COPY_KERNEL); + LOOP_WRITE(rec, pos, src, count); return 0; } @@ -483,16 +456,15 @@ static int emu8k_pcm_silence(struct snd_pcm_substream *subs, /* convert to word unit */ pos = (pos << 1) + rec->loop_start[voice]; count <<= 1; - LOOP_WRITE(rec, pos, NULL, count, FILL_SILENCE); + LOOP_WRITE(rec, pos, USER_SOCKPTR(NULL), count); return 0; } #else /* interleave */ -#define LOOP_WRITE(rec, pos, _buf, count, mode) \ +#define LOOP_WRITE(rec, pos, iter, count) \ do { \ struct snd_emu8000 *emu = rec->emu; \ - unsigned short *buf = (__force unsigned short *)(_buf); \ snd_emu8000_write_wait(emu, 1); \ EMU8000_SMALW_WRITE(emu, pos + rec->loop_start[0]); \ if (rec->voices > 1) \ @@ -500,11 +472,11 @@ static int emu8k_pcm_silence(struct snd_pcm_substream *subs, while (count > 0) { \ unsigned short sval; \ CHECK_SCHEDULER(); \ - GET_VAL(sval, buf, mode); \ + GET_VAL(sval, iter); \ EMU8000_SMLD_WRITE(emu, sval); \ if (rec->voices > 1) { \ CHECK_SCHEDULER(); \ - GET_VAL(sval, buf, mode); \ + GET_VAL(sval, iter); \ EMU8000_SMRD_WRITE(emu, sval); \ } \ count--; \ @@ -518,27 +490,14 @@ static int emu8k_pcm_silence(struct snd_pcm_substream *subs, */ static int emu8k_pcm_copy(struct snd_pcm_substream *subs, int voice, unsigned long pos, - void __user *src, unsigned long count) + struct iov_iter *src, unsigned long count) { struct snd_emu8k_pcm *rec = subs->runtime->private_data; /* convert to frames */ pos = bytes_to_frames(subs->runtime, pos); count = bytes_to_frames(subs->runtime, count); - LOOP_WRITE(rec, pos, src, count, COPY_USER); - return 0; -} - -static int emu8k_pcm_copy_kernel(struct snd_pcm_substream *subs, - int voice, unsigned long pos, - void *src, unsigned long count) -{ - struct snd_emu8k_pcm *rec = subs->runtime->private_data; - - /* convert to frames */ - pos = bytes_to_frames(subs->runtime, pos); - count = bytes_to_frames(subs->runtime, count); - LOOP_WRITE(rec, pos, src, count, COPY_KERNEL); + LOOP_WRITE(rec, pos, src, count); return 0; } @@ -550,7 +509,7 @@ static int emu8k_pcm_silence(struct snd_pcm_substream *subs, /* convert to frames */ pos = bytes_to_frames(subs->runtime, pos); count = bytes_to_frames(subs->runtime, count); - LOOP_WRITE(rec, pos, NULL, count, FILL_SILENCE); + LOOP_WRITE(rec, pos, NULL, count); return 0; } #endif @@ -666,8 +625,7 @@ static const struct snd_pcm_ops emu8k_pcm_ops = { .prepare = emu8k_pcm_prepare, .trigger = emu8k_pcm_trigger, .pointer = emu8k_pcm_pointer, - .copy_user = emu8k_pcm_copy, - .copy_kernel = emu8k_pcm_copy_kernel, + .copy = emu8k_pcm_copy, .fill_silence = emu8k_pcm_silence, };