From patchwork Tue Mar 3 10:10:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 1248250 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=JQPWDQVX; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 48WtBM6KL5z9sRN for ; Tue, 3 Mar 2020 21:13:15 +1100 (AEDT) Received: from localhost ([::1]:44676 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j94Y5-0002mT-Mu for incoming@patchwork.ozlabs.org; Tue, 03 Mar 2020 05:13:13 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:52426) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j94Vw-0007XS-70 for qemu-devel@nongnu.org; Tue, 03 Mar 2020 05:11:02 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j94Vu-00068F-RB for qemu-devel@nongnu.org; Tue, 03 Mar 2020 05:11:00 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:58038 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1j94Vt-00066V-Dc for qemu-devel@nongnu.org; Tue, 03 Mar 2020 05:10:57 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1583230256; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=NOSw7EGr/gTqFXbozjor71abeAKmizCcurOBJO2SyhU=; b=JQPWDQVXMqoXoQCbFWyETHTEcmdqtdCB95mIxd1nY/+cZ+PyypcQPgN/ds7dz8lC14043o YgduRzlTioMYxCTant9ou4Qfuhrg1WKSwnoCIeijVpoWtCiOLcT43oYYqD7ivhfvcqWMqj y+bloz0fs6SwdhDhK0+XFiPR1cEa4zs= 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-307-Y_HpQjyCOaq4zYyi0fk0-g-1; Tue, 03 Mar 2020 05:10:53 -0500 X-MC-Unique: Y_HpQjyCOaq4zYyi0fk0-g-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id C9CD08010F5; Tue, 3 Mar 2020 10:10:51 +0000 (UTC) Received: from jason-ThinkPad-T430s.redhat.com (ovpn-12-98.pek2.redhat.com [10.72.12.98]) by smtp.corp.redhat.com (Postfix) with ESMTP id F2B1D8D55E; Tue, 3 Mar 2020 10:10:48 +0000 (UTC) From: Jason Wang To: peter.maydell@linaro.org Subject: [PULL V2 02/23] dp8393x: Always use 32-bit accesses Date: Tue, 3 Mar 2020 18:10:21 +0800 Message-Id: <1583230242-14597-3-git-send-email-jasowang@redhat.com> In-Reply-To: <1583230242-14597-1-git-send-email-jasowang@redhat.com> References: <1583230242-14597-1-git-send-email-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 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: Jason Wang , qemu-devel@nongnu.org, Finn Thain Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Finn Thain The DP83932 and DP83934 have 32 data lines. The datasheet says, Data Bus: These bidirectional lines are used to transfer data on the system bus. When the SONIC is a bus master, 16-bit data is transferred on D15-D0 and 32-bit data is transferred on D31-D0. When the SONIC is accessed as a slave, register data is driven onto lines D15-D0. D31-D16 are held TRI-STATE if SONIC is in 16-bit mode. If SONIC is in 32-bit mode, they are driven, but invalid. Always use 32-bit accesses both as bus master and bus slave. Force the MSW to zero in bus master mode. This gets the Linux 'jazzsonic' driver working, and avoids the need for prior hacks to make the NetBSD 'sn' driver work. Signed-off-by: Finn Thain Tested-by: Laurent Vivier Signed-off-by: Jason Wang --- hw/net/dp8393x.c | 47 +++++++++++++++++++++++++++++------------------ 1 file changed, 29 insertions(+), 18 deletions(-) diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c index 216d44b..51b71da 100644 --- a/hw/net/dp8393x.c +++ b/hw/net/dp8393x.c @@ -246,9 +246,19 @@ static void dp8393x_put(dp8393xState *s, int width, int offset, uint16_t val) { if (s->big_endian) { - s->data[offset * width + width - 1] = cpu_to_be16(val); + if (width == 2) { + s->data[offset * 2] = 0; + s->data[offset * 2 + 1] = cpu_to_be16(val); + } else { + s->data[offset] = cpu_to_be16(val); + } } else { - s->data[offset * width] = cpu_to_le16(val); + if (width == 2) { + s->data[offset * 2] = cpu_to_le16(val); + s->data[offset * 2 + 1] = 0; + } else { + s->data[offset] = cpu_to_le16(val); + } } } @@ -590,7 +600,7 @@ static uint64_t dp8393x_read(void *opaque, hwaddr addr, unsigned int size) DPRINTF("read 0x%04x from reg %s\n", val, reg_names[reg]); - return val; + return s->big_endian ? val << 16 : val; } static void dp8393x_write(void *opaque, hwaddr addr, uint64_t data, @@ -598,13 +608,14 @@ static void dp8393x_write(void *opaque, hwaddr addr, uint64_t data, { dp8393xState *s = opaque; int reg = addr >> s->it_shift; + uint32_t val = s->big_endian ? data >> 16 : data; - DPRINTF("write 0x%04x to reg %s\n", (uint16_t)data, reg_names[reg]); + DPRINTF("write 0x%04x to reg %s\n", (uint16_t)val, reg_names[reg]); switch (reg) { /* Command register */ case SONIC_CR: - dp8393x_do_command(s, data); + dp8393x_do_command(s, val); break; /* Prevent write to read-only registers */ case SONIC_CAP2: @@ -617,36 +628,36 @@ static void dp8393x_write(void *opaque, hwaddr addr, uint64_t data, /* Accept write to some registers only when in reset mode */ case SONIC_DCR: if (s->regs[SONIC_CR] & SONIC_CR_RST) { - s->regs[reg] = data & 0xbfff; + s->regs[reg] = val & 0xbfff; } else { DPRINTF("writing to DCR invalid\n"); } break; case SONIC_DCR2: if (s->regs[SONIC_CR] & SONIC_CR_RST) { - s->regs[reg] = data & 0xf017; + s->regs[reg] = val & 0xf017; } else { DPRINTF("writing to DCR2 invalid\n"); } break; /* 12 lower bytes are Read Only */ case SONIC_TCR: - s->regs[reg] = data & 0xf000; + s->regs[reg] = val & 0xf000; break; /* 9 lower bytes are Read Only */ case SONIC_RCR: - s->regs[reg] = data & 0xffe0; + s->regs[reg] = val & 0xffe0; break; /* Ignore most significant bit */ case SONIC_IMR: - s->regs[reg] = data & 0x7fff; + s->regs[reg] = val & 0x7fff; dp8393x_update_irq(s); break; /* Clear bits by writing 1 to them */ case SONIC_ISR: - data &= s->regs[reg]; - s->regs[reg] &= ~data; - if (data & SONIC_ISR_RBE) { + val &= s->regs[reg]; + s->regs[reg] &= ~val; + if (val & SONIC_ISR_RBE) { dp8393x_do_read_rra(s); } dp8393x_update_irq(s); @@ -659,17 +670,17 @@ static void dp8393x_write(void *opaque, hwaddr addr, uint64_t data, case SONIC_REA: case SONIC_RRP: case SONIC_RWP: - s->regs[reg] = data & 0xfffe; + s->regs[reg] = val & 0xfffe; break; /* Invert written value for some registers */ case SONIC_CRCT: case SONIC_FAET: case SONIC_MPT: - s->regs[reg] = data ^ 0xffff; + s->regs[reg] = val ^ 0xffff; break; /* All other registers have no special contrainst */ default: - s->regs[reg] = data; + s->regs[reg] = val; } if (reg == SONIC_WT0 || reg == SONIC_WT1) { @@ -680,8 +691,8 @@ static void dp8393x_write(void *opaque, hwaddr addr, uint64_t data, static const MemoryRegionOps dp8393x_ops = { .read = dp8393x_read, .write = dp8393x_write, - .impl.min_access_size = 2, - .impl.max_access_size = 2, + .impl.min_access_size = 4, + .impl.max_access_size = 4, .endianness = DEVICE_NATIVE_ENDIAN, };