From patchwork Wed Jan 8 05:22:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Gibson X-Patchwork-Id: 11322871 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 46B86930 for ; Wed, 8 Jan 2020 05:33:16 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1DCE320705 for ; Wed, 8 Jan 2020 05:33:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=gibson.dropbear.id.au header.i=@gibson.dropbear.id.au header.b="mKU4LJz5" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1DCE320705 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=gibson.dropbear.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:37096 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ip3xz-0000lI-6I for patchwork-qemu-devel@patchwork.kernel.org; Wed, 08 Jan 2020 00:33:15 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:47416) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ip3oZ-0003qt-L5 for qemu-devel@nongnu.org; Wed, 08 Jan 2020 00:23:32 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ip3oY-0002g5-FR for qemu-devel@nongnu.org; Wed, 08 Jan 2020 00:23:31 -0500 Received: from bilbo.ozlabs.org ([2401:3900:2:1::2]:37841 helo=ozlabs.org) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ip3oY-0002dQ-3x; Wed, 08 Jan 2020 00:23:30 -0500 Received: by ozlabs.org (Postfix, from userid 1007) id 47syMB4srTz9sSJ; Wed, 8 Jan 2020 16:23:18 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1578460998; bh=K4gmsQsjqkgxHMHY6wYcJkaVCCpvjnAzS4xbEtMGHfU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mKU4LJz5VnbpK0PjUrno0/Pez/6DJLWnSlifmx3xj1n4rBI+IbXjXxoC1sk2grzex QW9OuujZKjbDeMxp9BQssnDQeYVa5nBi2fi1GqQbMUZ/kUBf/d7GJgxkaplAeCfnjk Gu1kkyciG/V3iqZDFr40FPyztK38dfvpkjthBfEg= From: David Gibson To: peter.maydell@linaro.org Subject: [PULL 06/26] mos6522: remove anh register Date: Wed, 8 Jan 2020 16:22:52 +1100 Message-Id: <20200108052312.238710-7-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200108052312.238710-1-david@gibson.dropbear.id.au> References: <20200108052312.238710-1-david@gibson.dropbear.id.au> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2401:3900:2:1::2 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lvivier@redhat.com, Laurent Vivier , qemu-devel@nongnu.org, groug@kaod.org, qemu-ppc@nongnu.org, clg@kaod.org, David Gibson Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Laurent Vivier Register addr 1 is defined as buffer A with handshake (vBufAH), register addr 15 is also defined as buffer A without handshake (vBufA). As both addresses access the same register, remove the definition of 'anh' and use only 'a' (with VIA_REG_ANH and VIA_REG_A). Fixes: 51f233ec92cd ("misc: introduce new mos6522 VIA device and enable it for ppc builds") Signed-off-by: Laurent Vivier Message-Id: <20191220214054.76525-1-laurent@vivier.eu> Signed-off-by: David Gibson --- hw/misc/mos6522.c | 16 ++++++++-------- include/hw/misc/mos6522.h | 1 - 2 files changed, 8 insertions(+), 9 deletions(-) diff --git a/hw/misc/mos6522.c b/hw/misc/mos6522.c index cecf0be59e..10b85bf751 100644 --- a/hw/misc/mos6522.c +++ b/hw/misc/mos6522.c @@ -244,6 +244,9 @@ uint64_t mos6522_read(void *opaque, hwaddr addr, unsigned size) val = s->b; break; case VIA_REG_A: + qemu_log_mask(LOG_UNIMP, "Read access to register A with handshake"); + /* fall through */ + case VIA_REG_ANH: val = s->a; break; case VIA_REG_DIRB: @@ -297,9 +300,7 @@ uint64_t mos6522_read(void *opaque, hwaddr addr, unsigned size) val = s->ier | 0x80; break; default: - case VIA_REG_ANH: - val = s->anh; - break; + g_assert_not_reached(); } if (addr != VIA_REG_IFR || val != 0) { @@ -322,6 +323,9 @@ void mos6522_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) mdc->portB_write(s); break; case VIA_REG_A: + qemu_log_mask(LOG_UNIMP, "Write access to register A with handshake"); + /* fall through */ + case VIA_REG_ANH: s->a = (s->a & ~s->dira) | (val & s->dira); mdc->portA_write(s); break; @@ -395,9 +399,7 @@ void mos6522_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); break; default: - case VIA_REG_ANH: - s->anh = val; - break; + g_assert_not_reached(); } } @@ -439,7 +441,6 @@ const VMStateDescription vmstate_mos6522 = { VMSTATE_UINT8(pcr, MOS6522State), VMSTATE_UINT8(ifr, MOS6522State), VMSTATE_UINT8(ier, MOS6522State), - VMSTATE_UINT8(anh, MOS6522State), VMSTATE_STRUCT_ARRAY(timers, MOS6522State, 2, 0, vmstate_mos6522_timer, MOS6522Timer), VMSTATE_END_OF_LIST() @@ -460,7 +461,6 @@ static void mos6522_reset(DeviceState *dev) s->ifr = 0; s->ier = 0; /* s->ier = T1_INT | SR_INT; */ - s->anh = 0; s->timers[0].frequency = s->frequency; s->timers[0].latch = 0xffff; diff --git a/include/hw/misc/mos6522.h b/include/hw/misc/mos6522.h index 493c907537..97384c6e02 100644 --- a/include/hw/misc/mos6522.h +++ b/include/hw/misc/mos6522.h @@ -115,7 +115,6 @@ typedef struct MOS6522State { uint8_t pcr; uint8_t ifr; uint8_t ier; - uint8_t anh; MOS6522Timer timers[2]; uint64_t frequency;