From patchwork Wed Nov 20 15:24:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= X-Patchwork-Id: 11254235 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 EB5396C1 for ; Wed, 20 Nov 2019 15:34:58 +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 7DC73206B6 for ; Wed, 20 Nov 2019 15:34:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="jQTMzxuc" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7DC73206B6 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:59446 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iXS0O-0001iJ-UD for patchwork-qemu-devel@patchwork.kernel.org; Wed, 20 Nov 2019 10:34:56 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:34332) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iXRtA-0001qa-Ph for qemu-devel@nongnu.org; Wed, 20 Nov 2019 10:27:30 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iXRt9-0007SG-9k for qemu-devel@nongnu.org; Wed, 20 Nov 2019 10:27:28 -0500 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:25860 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iXRt9-0007S5-44 for qemu-devel@nongnu.org; Wed, 20 Nov 2019 10:27:27 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1574263646; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=hBEJ1PyhMHNH1myZtB7lpQu8g1jjowBf8BuzAqx925s=; b=jQTMzxucia0HY92L8q0NGwA5HY6aHyo0m4UAbRqcBmgsO5P/ma58CZeeay+33eNaVBlp0s tJlr4y0sz3kGlMRDEdqtXyDvWYxKlME6AhkEvn1cKIxZuO8NEa4Se3222R/XlUV46JTUDH p3UEhF/ATBPzeL+ra9j7WGtUL6MDfY4= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-407-Bq4qx5LuMCyOVhZPYkGHPA-1; Wed, 20 Nov 2019 10:27:25 -0500 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B39B6477; Wed, 20 Nov 2019 15:27:24 +0000 (UTC) Received: from localhost (ovpn-112-56.ams2.redhat.com [10.36.112.56]) by smtp.corp.redhat.com (Postfix) with ESMTP id AA5BD1037ADA; Wed, 20 Nov 2019 15:27:16 +0000 (UTC) From: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= To: qemu-devel@nongnu.org Subject: [PATCH v4 13/37] serial-mm: add "regshift" property Date: Wed, 20 Nov 2019 19:24:18 +0400 Message-Id: <20191120152442.26657-14-marcandre.lureau@redhat.com> In-Reply-To: <20191120152442.26657-1-marcandre.lureau@redhat.com> References: <20191120152442.26657-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-MC-Unique: Bq4qx5LuMCyOVhZPYkGHPA-1 X-Mimecast-Spam-Score: 0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 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: peter.maydell@linaro.org, "Michael S. Tsirkin" , Paolo Bonzini , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" And a property and rename "it_shift" field to "regshift", as it seems to be more popular (and I don't know what "it" stands for). Signed-off-by: Marc-André Lureau Reviewed-by: Peter Maydell --- hw/char/serial.c | 28 +++++++++++++++++++++++----- include/hw/char/serial.h | 4 ++-- 2 files changed, 25 insertions(+), 7 deletions(-) diff --git a/hw/char/serial.c b/hw/char/serial.c index cb9cbd5146..225f09f30f 100644 --- a/hw/char/serial.c +++ b/hw/char/serial.c @@ -1032,7 +1032,7 @@ static uint64_t serial_mm_read(void *opaque, hwaddr addr, unsigned size) { SerialMM *s = SERIAL_MM(opaque); - return serial_ioport_read(&s->serial, addr >> s->it_shift, 1); + return serial_ioport_read(&s->serial, addr >> s->regshift, 1); } static void serial_mm_write(void *opaque, hwaddr addr, @@ -1040,7 +1040,7 @@ static void serial_mm_write(void *opaque, hwaddr addr, { SerialMM *s = SERIAL_MM(opaque); value &= 255; - serial_ioport_write(&s->serial, addr >> s->it_shift, value, 1); + serial_ioport_write(&s->serial, addr >> s->regshift, value, 1); } static const MemoryRegionOps serial_mm_ops[3] = { @@ -1068,14 +1068,14 @@ static const MemoryRegionOps serial_mm_ops[3] = { }; SerialMM *serial_mm_init(MemoryRegion *address_space, - hwaddr base, int it_shift, + hwaddr base, int regshift, qemu_irq irq, int baudbase, Chardev *chr, enum device_endian end) { SerialMM *smm = SERIAL_MM(qdev_create(NULL, TYPE_SERIAL_MM)); SerialState *s = &smm->serial; - smm->it_shift = it_shift; + qdev_prop_set_uint8(DEVICE(smm), "regshift", regshift); s->irq = irq; qdev_prop_set_uint32(DEVICE(s), "baudbase", baudbase); qdev_prop_set_chr(DEVICE(s), "chardev", chr); @@ -1085,7 +1085,7 @@ SerialMM *serial_mm_init(MemoryRegion *address_space, qdev_init_nofail(DEVICE(smm)); memory_region_init_io(&s->io, NULL, &serial_mm_ops[end], smm, - "serial", 8 << it_shift); + "serial", 8 << regshift); memory_region_add_subregion(address_space, base, &s->io); return smm; @@ -1099,11 +1099,29 @@ static void serial_mm_instance_init(Object *o) TYPE_SERIAL, &error_abort, NULL); } +static Property serial_mm_properties[] = { + /* + * Set the spacing between adjacent memory-mapped UART registers. + * Each register will be at (1 << regshift) bytes after the + * previous one. + */ + DEFINE_PROP_UINT8("regshift", SerialMM, regshift, 0), + DEFINE_PROP_END_OF_LIST(), +}; + +static void serial_mm_class_init(ObjectClass *klass, void* data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->props = serial_mm_properties; +} + static const TypeInfo serial_mm_info = { .name = TYPE_SERIAL_MM, .parent = TYPE_SYS_BUS_DEVICE, .instance_init = serial_mm_instance_init, .instance_size = sizeof(SerialMM), + .class_init = serial_mm_class_init, }; static void serial_register_types(void) diff --git a/include/hw/char/serial.h b/include/hw/char/serial.h index 730165347c..eaeda62698 100644 --- a/include/hw/char/serial.h +++ b/include/hw/char/serial.h @@ -84,7 +84,7 @@ typedef struct SerialMM { SerialState serial; - int it_shift; + uint8_t regshift; } SerialMM; extern const VMStateDescription vmstate_serial; @@ -101,7 +101,7 @@ void serial_set_frequency(SerialState *s, uint32_t frequency); SerialState *serial_init(int base, qemu_irq irq, int baudbase, Chardev *chr, MemoryRegion *system_io); SerialMM *serial_mm_init(MemoryRegion *address_space, - hwaddr base, int it_shift, + hwaddr base, int regshift, qemu_irq irq, int baudbase, Chardev *chr, enum device_endian end);