mirror of
https://github.com/projectacrn/acrn-hypervisor.git
synced 2025-08-14 22:34:26 +00:00
VRPMB-BE: create virtio rpmb backend VBS-U
This patch implements virtio rpmb backend VBS-U component, it includes the basic module interface with DM. This component will work with vRPMB FE driver together to provide one communication channel between UOS and SOS. Signed-off-by: weideng <wei.a.deng@intel.com> Signed-off-by: yingbinx <yingbinx.zeng@intel.com> Acked-by: Zhu Bing <bing.zhu@intel.com>
This commit is contained in:
yingbinx
lijinxia
parent
91f7391ad8
commit
6c4ebe3f26
@ -80,6 +80,7 @@ SRCS += hw/pci/virtio/virtio_net.c
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SRCS += hw/pci/virtio/virtio_rnd.c
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SRCS += hw/pci/virtio/virtio_hyper_dmabuf.c
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SRCS += hw/pci/virtio/virtio_heci.c
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SRCS += hw/pci/virtio/virtio_rpmb.c
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SRCS += hw/pci/irq.c
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SRCS += hw/pci/uart.c
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SRCS += hw/pci/gvt.c
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212
devicemodel/hw/pci/virtio/virtio_rpmb.c
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212
devicemodel/hw/pci/virtio/virtio_rpmb.c
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@ -0,0 +1,212 @@
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/*
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* Virtio Rpmb backend.
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*
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* Copyright (C) 2018 Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* Contact Information: weideng <wei.a.deng@intel.com>
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Create virtio rpmb backend VBS-U. This component will work with RPMB FE
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* driver to provide one communication channel between UOS and SOS.
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* The message from RPMB daemon in Android will be transferred over the
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* channel and finally arrived RPMB physical driver on SOS kernel.
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*
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*/
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/uio.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <assert.h>
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#include <pthread.h>
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#include <sysexits.h>
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#include "dm.h"
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#include "pci_core.h"
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#include "virtio.h"
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#include "vmmapi.h"
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <linux/types.h>
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#define VIRTIO_RPMB_RINGSZ 64
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static int virtio_rpmb_debug;
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#define DPRINTF(params) do { if (virtio_rpmb_debug) printf params; } while (0)
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#define WPRINTF(params) (printf params)
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/*
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* virtio-rpmb struct
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*/
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struct virtio_rpmb {
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struct virtio_base base;
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struct virtio_vq_info vq;
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pthread_mutex_t mtx;
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/*
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* Different UOS (with vmid) will access physical rpmb area
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* with different offsets.
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*/
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int vmid;
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};
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static void
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virtio_rpmb_notify(void *base, struct virtio_vq_info *vq)
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{
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struct iovec iov;
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int len;
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uint16_t idx;
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while (vq_has_descs(vq)) {
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vq_getchain(vq, &idx, &iov, 1, NULL);
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len = iov.iov_len;
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assert(len > 0);
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/*
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* Release this chain and handle more
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*/
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vq_relchain(vq, idx, len);
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}
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vq_endchains(vq, 1); /* Generate interrupt if appropriate. */
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}
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static void
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virtio_rpmb_reset(void *base)
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{
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struct virtio_rpmb *rpmb;
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if (!base) {
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DPRINTF(("error, invalid args!\n"));
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return;
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}
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rpmb = base;
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DPRINTF(("virtio_rpmb: device reset requested !\n"));
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virtio_reset_dev(&rpmb->base);
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}
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static struct virtio_ops virtio_rpmb_ops = {
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"virtio_rpmb", /* our name */
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1, /* we support 1 virtqueue */
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0, /* config reg size */
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virtio_rpmb_reset, /* reset */
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virtio_rpmb_notify, /* device-wide qnotify */
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NULL, /* read virtio config */
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NULL, /* write virtio config */
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NULL, /* apply negotiated features */
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NULL, /* called on guest set status */
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0, /* our capabilities */
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};
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static int
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virtio_rpmb_init(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
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{
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struct virtio_rpmb *rpmb;
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pthread_mutexattr_t attr;
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int rc;
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rpmb = calloc(1, sizeof(struct virtio_rpmb));
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if (!rpmb) {
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DPRINTF(("error, unable to calloc rpmb buffer!\n"));
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return -1;
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}
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/* init mutex attribute properly */
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rc = pthread_mutexattr_init(&attr);
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if (rc) {
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DPRINTF(("mutexattr init failed with error %d!\n", rc));
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goto out;
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}
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if (virtio_uses_msix()) {
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rc = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_DEFAULT);
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if (rc) {
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DPRINTF(("settype(DEFAULT) failed %d!\n", rc));
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goto out;
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}
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} else {
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rc = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
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if (rc) {
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DPRINTF(("settype(RESURSIVE) failed %d!\n", rc));
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goto out;
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}
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}
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rc = pthread_mutex_init(&rpmb->mtx, &attr);
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if (rc) {
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DPRINTF(("mutex init failed with error %d!\n", rc));
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goto out;
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}
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virtio_linkup(&rpmb->base, &virtio_rpmb_ops, rpmb, dev, &rpmb->vq);
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rpmb->base.mtx = &rpmb->mtx;
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rpmb->vq.qsize = VIRTIO_RPMB_RINGSZ;
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rpmb->vmid = ctx->vmid;
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/* initialize config space */
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pci_set_cfgdata16(dev, PCIR_DEVICE, VIRTIO_DEV_RPMB);
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pci_set_cfgdata16(dev, PCIR_VENDOR, INTEL_VENDOR_ID);
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pci_set_cfgdata8(dev, PCIR_CLASS, PCIC_OTHER);
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pci_set_cfgdata16(dev, PCIR_SUBDEV_0, VIRTIO_TYPE_RPMB);
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pci_set_cfgdata16(dev, PCIR_SUBVEND_0, INTEL_VENDOR_ID);
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rc = virtio_interrupt_init(&rpmb->base, virtio_uses_msix());
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if (rc) {
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DPRINTF(("virtio_interrupt_init failed (%d)!\n", rc));
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goto out;
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}
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virtio_set_io_bar(&rpmb->base, 0);
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return 0;
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out:
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free(rpmb);
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return rc;
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}
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static void
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virtio_rpmb_deinit(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
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{
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if (dev->arg) {
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DPRINTF(("virtio_rpmb_be_deinit: free struct virtio_rpmb!\n"));
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free((struct virtio_rpmb *)dev->arg);
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}
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}
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struct pci_vdev_ops pci_ops_virtio_rpmb = {
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.class_name = "virtio-rpmb",
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.vdev_init = virtio_rpmb_init,
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.vdev_deinit = virtio_rpmb_deinit,
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.vdev_barwrite = virtio_pci_write,
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.vdev_barread = virtio_pci_read
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};
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DEFINE_PCI_DEVTYPE(pci_ops_virtio_rpmb);
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