From patchwork Mon Dec 3 16:27:51 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Williamson X-Patchwork-Id: 1007111 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; 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 Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 437ry80J4Mz9sD9 for ; Tue, 4 Dec 2018 04:06:55 +1100 (AEDT) Received: from localhost ([::1]:50705 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gTrgK-0007bz-O0 for incoming@patchwork.ozlabs.org; Mon, 03 Dec 2018 12:06:52 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42343) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gTr4i-00059x-84 for qemu-devel@nongnu.org; Mon, 03 Dec 2018 11:28:02 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gTr4d-0002jt-C4 for qemu-devel@nongnu.org; Mon, 03 Dec 2018 11:28:00 -0500 Received: from mx1.redhat.com ([209.132.183.28]:43764) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gTr4d-0002jB-41 for qemu-devel@nongnu.org; Mon, 03 Dec 2018 11:27:55 -0500 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 mx1.redhat.com (Postfix) with ESMTPS id 6E09D308A94C; Mon, 3 Dec 2018 16:27:54 +0000 (UTC) Received: from gimli.home (ovpn-116-92.phx2.redhat.com [10.3.116.92]) by smtp.corp.redhat.com (Postfix) with ESMTP id AF085600C1; Mon, 3 Dec 2018 16:27:51 +0000 (UTC) From: Alex Williamson To: qemu-devel@nongnu.org Date: Mon, 03 Dec 2018 09:27:51 -0700 Message-ID: <154385447129.17724.6790659933058593369.stgit@gimli.home> In-Reply-To: <154385426086.17724.4390242199797858265.stgit@gimli.home> References: <154385426086.17724.4390242199797858265.stgit@gimli.home> User-Agent: StGit/0.19-dirty MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.41]); Mon, 03 Dec 2018 16:27:54 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [for-4.0 PATCH v2 3/9] qapi: Define PCIe link speed and width properties X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Geoffrey McRae , Markus Armbruster Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Create properties to be able to define speeds and widths for PCIe links. The only tricky bit here is that our get and set callbacks translate from the fixed QAPI automagic enums to those we define in PCI code to represent the actual register segment value. Cc: Eric Blake Cc: Markus Armbruster Tested-by: Geoffrey McRae Signed-off-by: Alex Williamson --- hw/core/qdev-properties.c | 178 ++++++++++++++++++++++++++++++++++++++++++ include/hw/qdev-properties.h | 8 ++ qapi/common.json | 42 ++++++++++ 3 files changed, 228 insertions(+) diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c index 35072dec1ecf..f5ca5b821a79 100644 --- a/hw/core/qdev-properties.c +++ b/hw/core/qdev-properties.c @@ -1327,3 +1327,181 @@ const PropertyInfo qdev_prop_off_auto_pcibar = { .set = set_enum, .set_default_value = set_default_value_enum, }; + +/* --- PCIELinkSpeed 2_5/5/8/16 -- */ + +static void get_prop_pcielinkspeed(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + DeviceState *dev = DEVICE(obj); + Property *prop = opaque; + PCIExpLinkSpeed *p = qdev_get_prop_ptr(dev, prop); + PCIELinkSpeed speed; + + switch (*p) { + case QEMU_PCI_EXP_LNK_2_5GT: + speed = PCIE_LINK_SPEED_2_5; + break; + case QEMU_PCI_EXP_LNK_5GT: + speed = PCIE_LINK_SPEED_5; + break; + case QEMU_PCI_EXP_LNK_8GT: + speed = PCIE_LINK_SPEED_8; + break; + case QEMU_PCI_EXP_LNK_16GT: + speed = PCIE_LINK_SPEED_16; + break; + default: + /* Unreachable */ + abort(); + } + + visit_type_enum(v, prop->name, (int *)&speed, prop->info->enum_table, errp); +} + +static void set_prop_pcielinkspeed(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + DeviceState *dev = DEVICE(obj); + Property *prop = opaque; + PCIExpLinkSpeed *p = qdev_get_prop_ptr(dev, prop); + PCIELinkSpeed speed; + Error *local_err = NULL; + + if (dev->realized) { + qdev_prop_set_after_realize(dev, name, errp); + return; + } + + visit_type_enum(v, prop->name, (int *)&speed, + prop->info->enum_table, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + switch (speed) { + case PCIE_LINK_SPEED_2_5: + *p = QEMU_PCI_EXP_LNK_2_5GT; + break; + case PCIE_LINK_SPEED_5: + *p = QEMU_PCI_EXP_LNK_5GT; + break; + case PCIE_LINK_SPEED_8: + *p = QEMU_PCI_EXP_LNK_8GT; + break; + case PCIE_LINK_SPEED_16: + *p = QEMU_PCI_EXP_LNK_16GT; + break; + default: + /* Unreachable */ + abort(); + } +} + +const PropertyInfo qdev_prop_pcie_link_speed = { + .name = "PCIELinkSpeed", + .description = "2_5/5/8/16", + .enum_table = &PCIELinkSpeed_lookup, + .get = get_prop_pcielinkspeed, + .set = set_prop_pcielinkspeed, + .set_default_value = set_default_value_enum, +}; + +/* --- PCIELinkWidth 1/2/4/8/12/16/32 -- */ + +static void get_prop_pcielinkwidth(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + DeviceState *dev = DEVICE(obj); + Property *prop = opaque; + PCIExpLinkWidth *p = qdev_get_prop_ptr(dev, prop); + PCIELinkWidth width; + + switch (*p) { + case QEMU_PCI_EXP_LNK_X1: + width = PCIE_LINK_WIDTH_1; + break; + case QEMU_PCI_EXP_LNK_X2: + width = PCIE_LINK_WIDTH_2; + break; + case QEMU_PCI_EXP_LNK_X4: + width = PCIE_LINK_WIDTH_4; + break; + case QEMU_PCI_EXP_LNK_X8: + width = PCIE_LINK_WIDTH_8; + break; + case QEMU_PCI_EXP_LNK_X12: + width = PCIE_LINK_WIDTH_12; + break; + case QEMU_PCI_EXP_LNK_X16: + width = PCIE_LINK_WIDTH_16; + break; + case QEMU_PCI_EXP_LNK_X32: + width = PCIE_LINK_WIDTH_32; + break; + default: + /* Unreachable */ + abort(); + } + + visit_type_enum(v, prop->name, (int *)&width, prop->info->enum_table, errp); +} + +static void set_prop_pcielinkwidth(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + DeviceState *dev = DEVICE(obj); + Property *prop = opaque; + PCIExpLinkWidth *p = qdev_get_prop_ptr(dev, prop); + PCIELinkWidth width; + Error *local_err = NULL; + + if (dev->realized) { + qdev_prop_set_after_realize(dev, name, errp); + return; + } + + visit_type_enum(v, prop->name, (int *)&width, + prop->info->enum_table, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + switch (width) { + case PCIE_LINK_WIDTH_1: + *p = QEMU_PCI_EXP_LNK_X1; + break; + case PCIE_LINK_WIDTH_2: + *p = QEMU_PCI_EXP_LNK_X2; + break; + case PCIE_LINK_WIDTH_4: + *p = QEMU_PCI_EXP_LNK_X4; + break; + case PCIE_LINK_WIDTH_8: + *p = QEMU_PCI_EXP_LNK_X8; + break; + case PCIE_LINK_WIDTH_12: + *p = QEMU_PCI_EXP_LNK_X12; + break; + case PCIE_LINK_WIDTH_16: + *p = QEMU_PCI_EXP_LNK_X16; + break; + case PCIE_LINK_WIDTH_32: + *p = QEMU_PCI_EXP_LNK_X32; + break; + default: + /* Unreachable */ + abort(); + } +} + +const PropertyInfo qdev_prop_pcie_link_width = { + .name = "PCIELinkWidth", + .description = "1/2/4/8/12/16/32", + .enum_table = &PCIELinkWidth_lookup, + .get = get_prop_pcielinkwidth, + .set = set_prop_pcielinkwidth, + .set_default_value = set_default_value_enum, +}; diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h index 4f60cc88f325..6a13a284c48c 100644 --- a/include/hw/qdev-properties.h +++ b/include/hw/qdev-properties.h @@ -36,6 +36,8 @@ extern const PropertyInfo qdev_prop_uuid; extern const PropertyInfo qdev_prop_arraylen; extern const PropertyInfo qdev_prop_link; extern const PropertyInfo qdev_prop_off_auto_pcibar; +extern const PropertyInfo qdev_prop_pcie_link_speed; +extern const PropertyInfo qdev_prop_pcie_link_width; #define DEFINE_PROP(_name, _state, _field, _prop, _type) { \ .name = (_name), \ @@ -217,6 +219,12 @@ extern const PropertyInfo qdev_prop_off_auto_pcibar; #define DEFINE_PROP_OFF_AUTO_PCIBAR(_n, _s, _f, _d) \ DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_off_auto_pcibar, \ OffAutoPCIBAR) +#define DEFINE_PROP_PCIE_LINK_SPEED(_n, _s, _f, _d) \ + DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_pcie_link_speed, \ + PCIExpLinkSpeed) +#define DEFINE_PROP_PCIE_LINK_WIDTH(_n, _s, _f, _d) \ + DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_pcie_link_width, \ + PCIExpLinkWidth) #define DEFINE_PROP_UUID(_name, _state, _field) { \ .name = (_name), \ diff --git a/qapi/common.json b/qapi/common.json index 021174f04ea4..b6f3cca35c7e 100644 --- a/qapi/common.json +++ b/qapi/common.json @@ -127,6 +127,48 @@ { 'enum': 'OffAutoPCIBAR', 'data': [ 'off', 'auto', 'bar0', 'bar1', 'bar2', 'bar3', 'bar4', 'bar5' ] } +## +# @PCIELinkSpeed: +# +# An enumeration of PCIe link speeds in units of GT/s +# +# @2_5: 2.5GT/s +# +# @5: 5.0GT/s +# +# @8: 8.0GT/s +# +# @16: 16.0GT/s +# +# Since: 3.2 +## +{ 'enum': 'PCIELinkSpeed', + 'data': [ '2_5', '5', '8', '16' ] } + +## +# @PCIELinkWidth: +# +# An enumeration of PCIe link width +# +# @1: x1 +# +# @2: x2 +# +# @4: x4 +# +# @8: x8 +# +# @12: x12 +# +# @16: x16 +# +# @32: x32 +# +# Since: 3.2 +## +{ 'enum': 'PCIELinkWidth', + 'data': [ '1', '2', '4', '8', '12', '16', '32' ] } + ## # @SysEmuTarget: #