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[82.218.84.190]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a9ee0e2f731sm523715566b.189.2024.11.10.13.55.50 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Sun, 10 Nov 2024 13:55:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=philjordan-eu.20230601.gappssmtp.com; s=20230601; t=1731275752; x=1731880552; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=UsIsZy2FeKZC6FHh21DdF13zG6y8T/RJTO5c8MnEdJE=; b=tilEjCkhxefYK8jau0pqQjHXsfTuoa/1moWSOtbHGbTxc8/e9mURjYH8yWzn8hacdX JhAn9DjSXLATa54p12iXOQL/+LcUCK4eSi6T+DVJDes8NkboSI6FKm1baVZkPkZG7ySd tX9hviMkZvNX5OPk14ybRgYnho9jcZFzNSqjed3bEJNSHMDyCw4t44zThYnxh39vgr1I r1l39S2M7DQeXz6sMjLL4lyIK1sRbud+BwpKfZzwG9MtIwkjPakpw6MfCn95SsyBMkjK 6OWCBLu4nK+c3/pvWZuhF0c9kNdUDgCytRTztL+1eEEiPey3zBukNo8gCranNNdJdP67 vexw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731275752; x=1731880552; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=UsIsZy2FeKZC6FHh21DdF13zG6y8T/RJTO5c8MnEdJE=; b=EiooE5iM5djOITIyG6Hc+QNpozrmtpZm4sI6FA4DZIQsxBD4QLpJdCE/0JqOyXvsjc 3ltVAEzilk0Iz6aYjIjI9JWCosx/psMcqxPUjgzMzKKTQcFCWDBHs+i7HfXZVlodDXUY y1hvgNOmGdTZA0ia77lFGg8++2yQ7ZctSjPCGJhJ35IjQCVGkUTov+/u2ICu3LAHEadE XbyQRkwxef7ZOcjF3eDw4EKXKLTia7dP21/qhoF7q0hxGFZNnFg03YG4Ffse/3kbP7W5 Nr+E/2aKppBHDaqoqCrUAslrYILx5MZ+6r0xCcsTy/XuCrhpscBFIyVNbfZIKRPnAKpt nOGQ== X-Gm-Message-State: AOJu0Yy+F+j15HHWiOZ/JocGg3r6m2V7FBnjVjLG8Xx+xHHDosajYjQy N0Azm9SGzLlSdVS/bncog4urR0h2NEobgA1Bg0sPAYctSXrRXJLOD34j91MmULjdpFEq2l8nVDG dMQ== X-Google-Smtp-Source: AGHT+IHxeSDJXRJJTi62euqUqucLlNjKy8rCJSyIG8HNXivd8WxvdiRSGHQ5+GtB0Tq8xeC15AVbnw== X-Received: by 2002:a17:907:7243:b0:a9a:7f92:782 with SMTP id a640c23a62f3a-a9ef0008d6cmr1062599966b.52.1731275752000; Sun, 10 Nov 2024 13:55:52 -0800 (PST) From: Phil Dennis-Jordan To: qemu-devel@nongnu.org Cc: agraf@csgraf.de, phil@philjordan.eu, peter.maydell@linaro.org, pbonzini@redhat.com, rad@semihalf.com, quic_llindhol@quicinc.com, stefanha@redhat.com, mst@redhat.com, slp@redhat.com, richard.henderson@linaro.org, eduardo@habkost.net, marcel.apfelbaum@gmail.com, gaosong@loongson.cn, jiaxun.yang@flygoat.com, chenhuacai@kernel.org, kwolf@redhat.com, hreitz@redhat.com, philmd@linaro.org, shorne@gmail.com, palmer@dabbelt.com, alistair.francis@wdc.com, bmeng.cn@gmail.com, liwei1518@gmail.com, dbarboza@ventanamicro.com, zhiwei_liu@linux.alibaba.com, jcmvbkbc@gmail.com, marcandre.lureau@redhat.com, berrange@redhat.com, akihiko.odaki@daynix.com, qemu-arm@nongnu.org, qemu-block@nongnu.org, qemu-riscv@nongnu.org, Alexander Graf Subject: [PATCH v9 13/16] hw/vmapple/virtio-blk: Add support for apple virtio-blk Date: Sun, 10 Nov 2024 22:55:16 +0100 Message-Id: <20241110215519.49150-14-phil@philjordan.eu> X-Mailer: git-send-email 2.39.3 (Apple Git-145) In-Reply-To: <20241110215519.49150-1-phil@philjordan.eu> References: <20241110215519.49150-1-phil@philjordan.eu> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: neutral client-ip=2a00:1450:4864:20::636; envelope-from=phil@philjordan.eu; helo=mail-ej1-x636.google.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NEUTRAL=0.779 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @philjordan-eu.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1731275973305116600 From: Alexander Graf Apple has its own virtio-blk PCI device ID where it deviates from the official virtio-pci spec slightly: It puts a new "apple type" field at a static offset in config space and introduces a new barrier command. This patch first creates a mechanism for virtio-blk downstream classes to handle unknown commands. It then creates such a downstream class and a new vmapple-virtio-blk-pci class which support the additional apple type config identifier as well as the barrier command. It then exposes 2 subclasses from that that we can use to expose root and aux virtio-blk devices: "vmapple-virtio-root" and "vmapple-virtio-aux". Signed-off-by: Alexander Graf Signed-off-by: Phil Dennis-Jordan Reviewed-by: Akihiko Odaki --- v4: * Use recommended object type declaration pattern. * Correctly log unimplemented code paths. * Most header code moved to .c, type name #defines moved to vmapple.h v5: * Corrected handling of potentially unaligned writes to virtio config area. * Simplified passing through device variant type to subobject. v9: * Correctly specify class_size for VMAppleVirtIOBlkClass hw/block/virtio-blk.c | 19 ++- hw/vmapple/Kconfig | 3 + hw/vmapple/meson.build | 1 + hw/vmapple/virtio-blk.c | 227 +++++++++++++++++++++++++++++++++ include/hw/pci/pci_ids.h | 1 + include/hw/virtio/virtio-blk.h | 12 +- include/hw/vmapple/vmapple.h | 4 + 7 files changed, 262 insertions(+), 5 deletions(-) create mode 100644 hw/vmapple/virtio-blk.c diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c index 9166d7974d4..9e8337bb639 100644 --- a/hw/block/virtio-blk.c +++ b/hw/block/virtio-blk.c @@ -50,12 +50,12 @@ static void virtio_blk_init_request(VirtIOBlock *s, Vir= tQueue *vq, req->mr_next =3D NULL; } =20 -static void virtio_blk_free_request(VirtIOBlockReq *req) +void virtio_blk_free_request(VirtIOBlockReq *req) { g_free(req); } =20 -static void virtio_blk_req_complete(VirtIOBlockReq *req, unsigned char sta= tus) +void virtio_blk_req_complete(VirtIOBlockReq *req, unsigned char status) { VirtIOBlock *s =3D req->dev; VirtIODevice *vdev =3D VIRTIO_DEVICE(s); @@ -966,8 +966,18 @@ static int virtio_blk_handle_request(VirtIOBlockReq *r= eq, MultiReqBuffer *mrb) break; } default: - virtio_blk_req_complete(req, VIRTIO_BLK_S_UNSUPP); - virtio_blk_free_request(req); + { + /* + * Give subclasses a chance to handle unknown requests. This way t= he + * class lookup is not in the hot path. + */ + VirtIOBlkClass *vbk =3D VIRTIO_BLK_GET_CLASS(s); + if (!vbk->handle_unknown_request || + !vbk->handle_unknown_request(req, mrb, type)) { + virtio_blk_req_complete(req, VIRTIO_BLK_S_UNSUPP); + virtio_blk_free_request(req); + } + } } return 0; } @@ -2044,6 +2054,7 @@ static const TypeInfo virtio_blk_info =3D { .instance_size =3D sizeof(VirtIOBlock), .instance_init =3D virtio_blk_instance_init, .class_init =3D virtio_blk_class_init, + .class_size =3D sizeof(VirtIOBlkClass), }; =20 static void virtio_register_types(void) diff --git a/hw/vmapple/Kconfig b/hw/vmapple/Kconfig index 8bbeb9a9237..bcd1be63e3c 100644 --- a/hw/vmapple/Kconfig +++ b/hw/vmapple/Kconfig @@ -7,3 +7,6 @@ config VMAPPLE_BDIF config VMAPPLE_CFG bool =20 +config VMAPPLE_VIRTIO_BLK + bool + diff --git a/hw/vmapple/meson.build b/hw/vmapple/meson.build index 64b78693a31..bf17cf906c9 100644 --- a/hw/vmapple/meson.build +++ b/hw/vmapple/meson.build @@ -1,3 +1,4 @@ system_ss.add(when: 'CONFIG_VMAPPLE_AES', if_true: files('aes.c')) system_ss.add(when: 'CONFIG_VMAPPLE_BDIF', if_true: files('bdif.c')) system_ss.add(when: 'CONFIG_VMAPPLE_CFG', if_true: files('cfg.c')) +system_ss.add(when: 'CONFIG_VMAPPLE_VIRTIO_BLK', if_true: files('virtio-b= lk.c')) diff --git a/hw/vmapple/virtio-blk.c b/hw/vmapple/virtio-blk.c new file mode 100644 index 00000000000..16928d09685 --- /dev/null +++ b/hw/vmapple/virtio-blk.c @@ -0,0 +1,227 @@ +/* + * VMApple specific VirtIO Block implementation + * + * Copyright =C2=A9 2023 Amazon.com, Inc. or its affiliates. All Rights Re= served. + * + * This work is licensed under the terms of the GNU GPL, version 2 or late= r. + * See the COPYING file in the top-level directory. + * + * SPDX-License-Identifier: GPL-2.0-or-later + * + * VMApple uses almost standard VirtIO Block, but with a few key differenc= es: + * + * - Different PCI device/vendor ID + * - An additional "type" identifier to differentiate AUX and Root volumes + * - An additional BARRIER command + */ + +#include "qemu/osdep.h" +#include "hw/vmapple/vmapple.h" +#include "hw/virtio/virtio-blk.h" +#include "hw/virtio/virtio-pci.h" +#include "qemu/bswap.h" +#include "qemu/log.h" +#include "qemu/module.h" +#include "qapi/error.h" + +OBJECT_DECLARE_TYPE(VMAppleVirtIOBlk, VMAppleVirtIOBlkClass, VMAPPLE_VIRTI= O_BLK) + +typedef struct VMAppleVirtIOBlkClass { + VirtIOBlkClass parent; + + void (*get_config)(VirtIODevice *vdev, uint8_t *config); +} VMAppleVirtIOBlkClass; + +typedef struct VMAppleVirtIOBlk { + VirtIOBlock parent_obj; + + uint32_t apple_type; +} VMAppleVirtIOBlk; + +/* + * vmapple-virtio-blk-pci: This extends VirtioPCIProxy. + */ +#define TYPE_VMAPPLE_VIRTIO_BLK_PCI "vmapple-virtio-blk-pci-base" +OBJECT_DECLARE_SIMPLE_TYPE(VMAppleVirtIOBlkPCI, VMAPPLE_VIRTIO_BLK_PCI) + +#define VIRTIO_BLK_T_APPLE_BARRIER 0x10000 + +#define VIRTIO_APPLE_TYPE_ROOT 1 +#define VIRTIO_APPLE_TYPE_AUX 2 + +static bool vmapple_virtio_blk_handle_unknown_request(VirtIOBlockReq *req, + MultiReqBuffer *mrb, + uint32_t type) +{ + switch (type) { + case VIRTIO_BLK_T_APPLE_BARRIER: + qemu_log_mask(LOG_UNIMP, "%s: Barrier requests are currently no-op= s\n", + __func__); + virtio_blk_req_complete(req, VIRTIO_BLK_S_OK); + virtio_blk_free_request(req); + return true; + default: + return false; + } +} + +/* + * VMApple virtio-blk uses the same config format as normal virtio, with o= ne + * exception: It adds an "apple type" specififer at the same location that + * the spec reserves for max_secure_erase_sectors. Let's hook into the + * get_config code path here, run it as usual and then patch in the apple = type. + */ +static void vmapple_virtio_blk_get_config(VirtIODevice *vdev, uint8_t *con= fig) +{ + VMAppleVirtIOBlk *dev =3D VMAPPLE_VIRTIO_BLK(vdev); + VMAppleVirtIOBlkClass *vvbk =3D VMAPPLE_VIRTIO_BLK_GET_CLASS(dev); + struct virtio_blk_config *blkcfg =3D (struct virtio_blk_config *)confi= g; + + vvbk->get_config(vdev, config); + + g_assert(dev->parent_obj.config_size >=3D endof(struct virtio_blk_conf= ig, zoned)); + + /* Apple abuses the field for max_secure_erase_sectors as type id */ + stl_he_p(&blkcfg->max_secure_erase_sectors, dev->apple_type); +} + +static void vmapple_virtio_blk_class_init(ObjectClass *klass, void *data) +{ + VirtIOBlkClass *vbk =3D VIRTIO_BLK_CLASS(klass); + VirtioDeviceClass *vdc =3D VIRTIO_DEVICE_CLASS(klass); + VMAppleVirtIOBlkClass *vvbk =3D VMAPPLE_VIRTIO_BLK_CLASS(klass); + + vbk->handle_unknown_request =3D vmapple_virtio_blk_handle_unknown_requ= est; + vvbk->get_config =3D vdc->get_config; + vdc->get_config =3D vmapple_virtio_blk_get_config; +} + +static const TypeInfo vmapple_virtio_blk_info =3D { + .name =3D TYPE_VMAPPLE_VIRTIO_BLK, + .parent =3D TYPE_VIRTIO_BLK, + .instance_size =3D sizeof(VMAppleVirtIOBlk), + .class_size =3D sizeof(VMAppleVirtIOBlkClass), + .class_init =3D vmapple_virtio_blk_class_init, +}; + +/* PCI Devices */ + +struct VMAppleVirtIOBlkPCI { + VirtIOPCIProxy parent_obj; + VMAppleVirtIOBlk vdev; + uint32_t apple_type; +}; + + +static Property vmapple_virtio_blk_pci_properties[] =3D { + DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0), + DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, + VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), + DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, + DEV_NVECTORS_UNSPECIFIED), + DEFINE_PROP_END_OF_LIST(), +}; + +static void vmapple_virtio_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error= **errp) +{ + VMAppleVirtIOBlkPCI *dev =3D VMAPPLE_VIRTIO_BLK_PCI(vpci_dev); + DeviceState *vdev =3D DEVICE(&dev->vdev); + VirtIOBlkConf *conf =3D &dev->vdev.parent_obj.conf; + + if (conf->num_queues =3D=3D VIRTIO_BLK_AUTO_NUM_QUEUES) { + conf->num_queues =3D virtio_pci_optimal_num_queues(0); + } + + if (vpci_dev->nvectors =3D=3D DEV_NVECTORS_UNSPECIFIED) { + vpci_dev->nvectors =3D conf->num_queues + 1; + } + + /* + * We don't support zones, but we need the additional config space siz= e. + * Let's just expose the feature so the rest of the virtio-blk logic + * allocates enough space for us. The guest will ignore zones anyway. + */ + virtio_add_feature(&dev->vdev.parent_obj.host_features, VIRTIO_BLK_F_Z= ONED); + /* Propagate the apple type down to the virtio-blk device */ + dev->vdev.apple_type =3D dev->apple_type; + /* and spawn the virtio-blk device */ + qdev_realize(vdev, BUS(&vpci_dev->bus), errp); + + /* + * The virtio-pci machinery adjusts its vendor/device ID based on whet= her + * we support modern or legacy virtio. Let's patch it back to the Apple + * identifiers here. + */ + pci_config_set_vendor_id(vpci_dev->pci_dev.config, PCI_VENDOR_ID_APPLE= ); + pci_config_set_device_id(vpci_dev->pci_dev.config, + PCI_DEVICE_ID_APPLE_VIRTIO_BLK); +} + +static void vmapple_virtio_blk_pci_class_init(ObjectClass *klass, void *da= ta) +{ + DeviceClass *dc =3D DEVICE_CLASS(klass); + VirtioPCIClass *k =3D VIRTIO_PCI_CLASS(klass); + PCIDeviceClass *pcidev_k =3D PCI_DEVICE_CLASS(klass); + + set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); + device_class_set_props(dc, vmapple_virtio_blk_pci_properties); + k->realize =3D vmapple_virtio_blk_pci_realize; + pcidev_k->vendor_id =3D PCI_VENDOR_ID_APPLE; + pcidev_k->device_id =3D PCI_DEVICE_ID_APPLE_VIRTIO_BLK; + pcidev_k->revision =3D VIRTIO_PCI_ABI_VERSION; + pcidev_k->class_id =3D PCI_CLASS_STORAGE_SCSI; +} + +static void vmapple_virtio_blk_pci_instance_init(Object *obj) +{ + VMAppleVirtIOBlkPCI *dev =3D VMAPPLE_VIRTIO_BLK_PCI(obj); + + virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), + TYPE_VMAPPLE_VIRTIO_BLK); +} + +static const VirtioPCIDeviceTypeInfo vmapple_virtio_blk_pci_info =3D { + .base_name =3D TYPE_VMAPPLE_VIRTIO_BLK_PCI, + .generic_name =3D "vmapple-virtio-blk-pci", + .instance_size =3D sizeof(VMAppleVirtIOBlkPCI), + .instance_init =3D vmapple_virtio_blk_pci_instance_init, + .class_init =3D vmapple_virtio_blk_pci_class_init, +}; + +static void vmapple_virtio_root_instance_init(Object *obj) +{ + VMAppleVirtIOBlkPCI *dev =3D VMAPPLE_VIRTIO_BLK_PCI(obj); + + dev->apple_type =3D VIRTIO_APPLE_TYPE_ROOT; +} + +static const TypeInfo vmapple_virtio_root_info =3D { + .name =3D TYPE_VMAPPLE_VIRTIO_ROOT, + .parent =3D "vmapple-virtio-blk-pci", + .instance_size =3D sizeof(VMAppleVirtIOBlkPCI), + .instance_init =3D vmapple_virtio_root_instance_init, +}; + +static void vmapple_virtio_aux_instance_init(Object *obj) +{ + VMAppleVirtIOBlkPCI *dev =3D VMAPPLE_VIRTIO_BLK_PCI(obj); + + dev->apple_type =3D VIRTIO_APPLE_TYPE_AUX; +} + +static const TypeInfo vmapple_virtio_aux_info =3D { + .name =3D TYPE_VMAPPLE_VIRTIO_AUX, + .parent =3D "vmapple-virtio-blk-pci", + .instance_size =3D sizeof(VMAppleVirtIOBlkPCI), + .instance_init =3D vmapple_virtio_aux_instance_init, +}; + +static void vmapple_virtio_blk_register_types(void) +{ + type_register_static(&vmapple_virtio_blk_info); + virtio_pci_types_register(&vmapple_virtio_blk_pci_info); + type_register_static(&vmapple_virtio_root_info); + type_register_static(&vmapple_virtio_aux_info); +} + +type_init(vmapple_virtio_blk_register_types) diff --git a/include/hw/pci/pci_ids.h b/include/hw/pci/pci_ids.h index f1a53fea8d6..33e2898be95 100644 --- a/include/hw/pci/pci_ids.h +++ b/include/hw/pci/pci_ids.h @@ -191,6 +191,7 @@ #define PCI_DEVICE_ID_APPLE_UNI_N_AGP 0x0020 #define PCI_DEVICE_ID_APPLE_U3_AGP 0x004b #define PCI_DEVICE_ID_APPLE_UNI_N_GMAC 0x0021 +#define PCI_DEVICE_ID_APPLE_VIRTIO_BLK 0x1a00 =20 #define PCI_VENDOR_ID_SUN 0x108e #define PCI_DEVICE_ID_SUN_EBUS 0x1000 diff --git a/include/hw/virtio/virtio-blk.h b/include/hw/virtio/virtio-blk.h index 5c14110c4b1..28d5046ea6c 100644 --- a/include/hw/virtio/virtio-blk.h +++ b/include/hw/virtio/virtio-blk.h @@ -24,7 +24,7 @@ #include "qapi/qapi-types-virtio.h" =20 #define TYPE_VIRTIO_BLK "virtio-blk-device" -OBJECT_DECLARE_SIMPLE_TYPE(VirtIOBlock, VIRTIO_BLK) +OBJECT_DECLARE_TYPE(VirtIOBlock, VirtIOBlkClass, VIRTIO_BLK) =20 /* This is the last element of the write scatter-gather list */ struct virtio_blk_inhdr @@ -100,6 +100,16 @@ typedef struct MultiReqBuffer { bool is_write; } MultiReqBuffer; =20 +typedef struct VirtIOBlkClass { + /*< private >*/ + VirtioDeviceClass parent; + /*< public >*/ + bool (*handle_unknown_request)(VirtIOBlockReq *req, MultiReqBuffer *mr= b, + uint32_t type); +} VirtIOBlkClass; + void virtio_blk_handle_vq(VirtIOBlock *s, VirtQueue *vq); +void virtio_blk_free_request(VirtIOBlockReq *req); +void virtio_blk_req_complete(VirtIOBlockReq *req, unsigned char status); =20 #endif diff --git a/include/hw/vmapple/vmapple.h b/include/hw/vmapple/vmapple.h index 3bba59f5ec7..b20956e1286 100644 --- a/include/hw/vmapple/vmapple.h +++ b/include/hw/vmapple/vmapple.h @@ -18,4 +18,8 @@ =20 #define TYPE_VMAPPLE_CFG "vmapple-cfg" =20 +#define TYPE_VMAPPLE_VIRTIO_BLK "vmapple-virtio-blk" +#define TYPE_VMAPPLE_VIRTIO_ROOT "vmapple-virtio-root" +#define TYPE_VMAPPLE_VIRTIO_AUX "vmapple-virtio-aux" + #endif /* HW_VMAPPLE_VMAPPLE_H */ --=20 2.39.3 (Apple Git-145)