rpmsg/rpmsg_virtio_ivshmem: add rpmsg virtio ivshmem support
rpmsg_virtio_ivshmem is a ivshmem based rpmsg virtio driver, with this driver, we can use the rpmsg virtio in qemu platfrom Signed-off-by: Yongrong Wang <wangyongrong@xiaomi.com> Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
This commit is contained in:
Yongrong Wang
archer
parent
af0bde8bca
commit
67e41d0e32
@ -28,6 +28,7 @@
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#include <nuttx/pci/pci_qemu_edu.h>
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#include <nuttx/pci/pci_qemu_test.h>
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#include <nuttx/rptun/rptun_ivshmem.h>
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#include <nuttx/rpmsg/rpmsg_virtio_ivshmem.h>
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#include "pci_drivers.h"
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@ -63,6 +64,25 @@ int pci_register_drivers(void)
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}
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#endif
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/* Initialization rptun ivshmem driver */
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#ifdef CONFIG_RPTUN_IVSHMEM
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ret = pci_register_rptun_ivshmem_driver();
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if (ret < 0)
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{
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pcierr("pci_register_rptun_ivshmem_driver failed, ret=%d\n", ret);
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}
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#endif
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#ifdef CONFIG_RPMSG_VIRTIO_IVSHMEM
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ret = pci_register_rpmsg_virtio_ivshmem_driver();
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if (ret < 0)
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{
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pcierr("pci_register_rpmsg_virtio_ivshmem_driver failed, ret=%d\n",
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ret);
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}
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#endif
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/* Initialization pci qemu test driver */
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#ifdef CONFIG_PCI_QEMU_TEST
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@ -83,16 +103,6 @@ int pci_register_drivers(void)
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}
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#endif
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/* Initialization rptun ivshmem driver */
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#ifdef CONFIG_RPTUN_IVSHMEM
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ret = pci_register_rptun_ivshmem_driver();
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if (ret < 0)
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{
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pcierr("pci_register_rptun_ivshmem_driver failed, ret=%d\n", ret);
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}
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#endif
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UNUSED(ret);
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return ret;
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}
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@ -38,4 +38,38 @@ config RPMSG_VIRTIO_STACKSIZE
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int "rpmsg virtio rx thread stack size"
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default DEFAULT_TASK_STACKSIZE
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config RPMSG_VIRTIO_IVSHMEM
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bool "rpmsg virtio ivshmem support"
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default n
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depends on PCI
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---help---
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This is rpmsg virtio driver based on pci ivshmem.
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if RPMSG_VIRTIO_IVSHMEM
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config RPMSG_VIRTIO_IVSHMEM_NAME
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string "rpmsg virtio ivshmem name"
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---help---
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Using this config to custom the rpmsg virtio ivshmem cpuname and role,
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using ";" to split the names.
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For example, if RPMSG_VIRTIO_IVSHMEM_CPUNAME = "cpu1:m;cpu2:s" and pass
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two ivshmem devices to the qemu, we will get two rpmsg virtio ivshmem drivers
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with remote cpu names: "cpu1", "cpu2", and roles: "master", "slave"
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config RPMSG_VIRTIO_IVSHMEM_BUFFSIZE
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int "rpmsg virtio ivshmem rpmsg buffer size"
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default 2048
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---help---
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The rpmsg buffer size in share memory, the RX and TX buffer size
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are same for now.
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config RPMSG_VIRTIO_IVSHMEM_BUFFNUM
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int "rpmsg virtio ivshmem rpmsg buffer number"
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default 8
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---help---
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The rpmsg virtio buffer number in share memory, the RX and TX buffer number
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are same for now.
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endif
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endif
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@ -33,6 +33,10 @@ CSRCS += rpmsg_virtio.c
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CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)openamp$(DELIM)open-amp$(DELIM)lib
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endif
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ifeq ($(CONFIG_RPMSG_VIRTIO_IVSHMEM),y)
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CSRCS += rpmsg_virtio_ivshmem.c
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endif
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DEPPATH += --dep-path rpmsg
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VPATH += :rpmsg
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373
drivers/rpmsg/rpmsg_virtio_ivshmem.c
Normal file
373
drivers/rpmsg/rpmsg_virtio_ivshmem.c
Normal file
@ -0,0 +1,373 @@
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/****************************************************************************
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* drivers/rpmsg/rpmsg_virtio_ivshmem.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <debug.h>
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#include <errno.h>
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#include <stdio.h>
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#include <nuttx/drivers/addrenv.h>
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#include <nuttx/pci/pci.h>
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#include <nuttx/rpmsg/rpmsg_virtio.h>
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#include <nuttx/rpmsg/rpmsg_virtio_ivshmem.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define RPMSG_VIRTIO_IVSHMEM_SHMEM_BAR 2
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#define RPMSG_VIRTIO_IVSHMEM_READY 0x1
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#define RPMSG_VIRTIO_IVSHMEM_WORK_DELAY 1
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#define RPMSG_VIRTIO_VRING_ALIGNMENT 8
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct rpmsg_virtio_ivshmem_mem_s
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{
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volatile uint64_t basem;
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volatile uint32_t seqs;
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volatile uint32_t seqm;
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volatile uint32_t cmds;
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volatile uint32_t cmdm;
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struct rpmsg_virtio_rsc_s rsc;
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};
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struct rpmsg_virtio_ivshmem_dev_s
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{
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struct rpmsg_virtio_s dev;
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rpmsg_virtio_callback_t callback;
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FAR void *arg;
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uint32_t seq;
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FAR struct rpmsg_virtio_ivshmem_mem_s *shmem;
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size_t shmem_size;
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struct simple_addrenv_s addrenv;
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int master;
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char cpuname[RPMSG_NAME_SIZE + 1];
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FAR struct pci_device_s *ivshmem;
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/* Work queue for transmit */
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struct work_s worker;
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static const FAR char *
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rpmsg_virtio_ivshmem_get_cpuname(FAR struct rpmsg_virtio_s *dev);
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static FAR struct rpmsg_virtio_rsc_s *
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rpmsg_virtio_ivshmem_get_resource(FAR struct rpmsg_virtio_s *dev);
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static int
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rpmsg_virtio_ivshmem_is_master(FAR struct rpmsg_virtio_s *dev);
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static int rpmsg_virtio_ivshmem_notify(FAR struct rpmsg_virtio_s *dev,
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uint32_t notifyid);
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static int
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rpmsg_virtio_ivshmem_register_callback(FAR struct rpmsg_virtio_s *dev,
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rpmsg_virtio_callback_t callback,
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FAR void *arg);
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static int rpmsg_virtio_ivshmem_probe(FAR struct pci_device_s *dev);
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static void rpmsg_virtio_ivshmem_remove(FAR struct pci_device_s *dev);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const struct rpmsg_virtio_ops_s g_rpmsg_virtio_ivshmem_ops =
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{
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.get_cpuname = rpmsg_virtio_ivshmem_get_cpuname,
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.get_resource = rpmsg_virtio_ivshmem_get_resource,
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.is_master = rpmsg_virtio_ivshmem_is_master,
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.notify = rpmsg_virtio_ivshmem_notify,
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.register_callback = rpmsg_virtio_ivshmem_register_callback,
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};
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static const struct pci_device_id_s g_rpmsg_virtio_ivshmem_ids[] =
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{
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{ PCI_DEVICE(0x1af4, 0x1110) },
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{ 0, }
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};
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static struct pci_driver_s g_rpmsg_virtio_ivshmem_drv =
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{
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g_rpmsg_virtio_ivshmem_ids, /* PCI id_tables */
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rpmsg_virtio_ivshmem_probe, /* Probe function */
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rpmsg_virtio_ivshmem_remove, /* Remove function */
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};
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static int g_rpmsg_virtio_ivshmem_idx = 0;
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static const FAR char *
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rpmsg_virtio_ivshmem_get_cpuname(FAR struct rpmsg_virtio_s *dev)
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{
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FAR struct rpmsg_virtio_ivshmem_dev_s *priv =
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(FAR struct rpmsg_virtio_ivshmem_dev_s *)dev;
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return priv->cpuname;
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}
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static FAR struct rpmsg_virtio_rsc_s *
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rpmsg_virtio_ivshmem_get_resource(FAR struct rpmsg_virtio_s *dev)
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{
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FAR struct rpmsg_virtio_ivshmem_dev_s *priv =
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(FAR struct rpmsg_virtio_ivshmem_dev_s *)dev;
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FAR struct rpmsg_virtio_rsc_s *rsc;
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rsc = &priv->shmem->rsc;
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if (priv->master)
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{
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memset(priv->shmem, 0, priv->shmem_size);
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rsc->rpmsg_vdev.id = VIRTIO_ID_RPMSG;
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rsc->rpmsg_vdev.dfeatures = 1 << VIRTIO_RPMSG_F_NS |
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1 << VIRTIO_RPMSG_F_ACK |
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1 << VIRTIO_RPMSG_F_BUFSZ;
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rsc->rpmsg_vdev.config_len = sizeof(struct fw_rsc_config);
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rsc->rpmsg_vdev.num_of_vrings = 2;
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rsc->rpmsg_vring0.da = 0;
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rsc->rpmsg_vring0.align = RPMSG_VIRTIO_VRING_ALIGNMENT;
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rsc->rpmsg_vring0.num = CONFIG_RPMSG_VIRTIO_IVSHMEM_BUFFNUM;
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rsc->rpmsg_vring1.da = 0;
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rsc->rpmsg_vring1.align = RPMSG_VIRTIO_VRING_ALIGNMENT;
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rsc->rpmsg_vring1.num = CONFIG_RPMSG_VIRTIO_IVSHMEM_BUFFNUM;
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rsc->config.r2h_buf_size = CONFIG_RPMSG_VIRTIO_IVSHMEM_BUFFSIZE;
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rsc->config.h2r_buf_size = CONFIG_RPMSG_VIRTIO_IVSHMEM_BUFFSIZE;
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priv->shmem->basem = (uint64_t)(uintptr_t)priv->shmem;
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}
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else
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{
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/* Wait untils master is ready, salve need use master base to
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* initialize addrenv.
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*/
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while (priv->shmem->basem == 0)
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{
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usleep(1000);
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}
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priv->addrenv.va = (uint64_t)(uintptr_t)priv->shmem;
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priv->addrenv.pa = priv->shmem->basem;
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priv->addrenv.size = priv->shmem_size;
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simple_addrenv_initialize(&priv->addrenv);
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priv->shmem->basem = 0;
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}
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return rsc;
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}
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static int rpmsg_virtio_ivshmem_is_master(FAR struct rpmsg_virtio_s *dev)
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{
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FAR struct rpmsg_virtio_ivshmem_dev_s *priv =
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(FAR struct rpmsg_virtio_ivshmem_dev_s *)dev;
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return priv->master;
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}
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static int rpmsg_virtio_ivshmem_notify(FAR struct rpmsg_virtio_s *dev,
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uint32_t vqid)
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{
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FAR struct rpmsg_virtio_ivshmem_dev_s *priv =
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(FAR struct rpmsg_virtio_ivshmem_dev_s *)dev;
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if (priv->master)
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{
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priv->shmem->seqm++;
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}
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else
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{
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priv->shmem->seqs++;
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}
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return 0;
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}
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static int
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rpmsg_virtio_ivshmem_register_callback(FAR struct rpmsg_virtio_s *dev,
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rpmsg_virtio_callback_t callback,
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FAR void *arg)
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{
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FAR struct rpmsg_virtio_ivshmem_dev_s *priv =
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(FAR struct rpmsg_virtio_ivshmem_dev_s *)dev;
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priv->callback = callback;
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priv->arg = arg;
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return 0;
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}
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/****************************************************************************
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* Name: rpmsg_virtio_ivshmem_work
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****************************************************************************/
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static void rpmsg_virtio_ivshmem_work(FAR void *arg)
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{
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FAR struct rpmsg_virtio_ivshmem_dev_s *priv = arg;
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bool should_notify = false;
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if (priv->master && priv->seq != priv->shmem->seqs)
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{
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priv->seq = priv->shmem->seqs;
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should_notify = true;
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}
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else if (!priv->master && priv->seq != priv->shmem->seqm)
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{
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priv->seq = priv->shmem->seqm;
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should_notify = true;
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}
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if (should_notify && priv->callback != NULL)
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{
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priv->callback(priv->arg, RPMSG_VIRTIO_NOTIFY_ALL);
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}
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work_queue(HPWORK, &priv->worker, rpmsg_virtio_ivshmem_work, priv,
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RPMSG_VIRTIO_IVSHMEM_WORK_DELAY);
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}
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/****************************************************************************
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* Name: rpmsg_virtio_ivshmem_get_info
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****************************************************************************/
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static int rpmsg_virtio_ivshmem_get_info(FAR char *cpuname, FAR int *master)
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{
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FAR const char *name = CONFIG_RPMSG_VIRTIO_IVSHMEM_NAME;
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int start = 0;
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int i;
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int j;
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for (i = 0, j = 0; name[start] != '\0'; i++)
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{
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if (name[i] == ';' || name[i] == '\0')
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{
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if (j++ == g_rpmsg_virtio_ivshmem_idx)
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{
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snprintf(cpuname, RPMSG_NAME_SIZE, "%.*s", i - start - 2,
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&name[start]);
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*master = name[i - 1] == 'm';
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return 0;
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}
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start = i + 1;
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}
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}
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return -ENODEV;
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}
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/****************************************************************************
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* Name: rpmsg_virtio_ivshmem_probe
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****************************************************************************/
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static int rpmsg_virtio_ivshmem_probe(FAR struct pci_device_s *dev)
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{
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FAR struct rpmsg_virtio_ivshmem_dev_s *priv;
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int ret;
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priv = kmm_zalloc(sizeof(*priv));
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if (priv == NULL)
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{
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return -ENOMEM;
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}
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/* Do the rpmsg virtio ivshmem init */
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priv->dev.ops = &g_rpmsg_virtio_ivshmem_ops;
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priv->ivshmem = dev;
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ret = rpmsg_virtio_ivshmem_get_info(priv->cpuname, &priv->master);
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if (ret < 0)
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{
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goto err_priv;
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}
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/* Configure the ivshmem device and get share memory address */
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ret = pci_enable_device(dev);
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if (ret < 0)
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{
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pcierr("Enable device failed, ret=%d\n", ret);
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goto err_priv;
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}
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pci_set_master(dev);
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priv->shmem = (FAR struct rpmsg_virtio_ivshmem_mem_s *)
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pci_map_bar(dev, RPMSG_VIRTIO_IVSHMEM_SHMEM_BAR);
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if (priv->shmem == NULL)
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{
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ret = -ENOTSUP;
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pcierr("Device not support share memory bar\n");
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goto err_master;
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}
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priv->shmem_size = pci_resource_len(dev, RPMSG_VIRTIO_IVSHMEM_SHMEM_BAR);
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pciinfo("shmem addr=%p size=%zu\n", priv->shmem, priv->shmem_size);
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/* Do rpmsg virtio initialize */
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ret = rpmsg_virtio_initialize(&priv->dev);
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if (ret < 0)
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{
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pcierr("rpmsg virtio intialize failed, ret=%d\n", ret);
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goto err_master;
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}
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work_queue(HPWORK, &priv->worker, rpmsg_virtio_ivshmem_work, priv, 0);
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g_rpmsg_virtio_ivshmem_idx++;
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return ret;
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err_master:
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pci_clear_master(dev);
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pci_disable_device(dev);
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err_priv:
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kmm_free(priv);
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return ret;
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}
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/****************************************************************************
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* Name: rpmsg_virtio_ivshmem_remove
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****************************************************************************/
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static void rpmsg_virtio_ivshmem_remove(FAR struct pci_device_s *dev)
|
||||
{
|
||||
pciwarn("Not support remove for now\n");
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
int pci_register_rpmsg_virtio_ivshmem_driver(void)
|
||||
{
|
||||
return pci_register_driver(&g_rpmsg_virtio_ivshmem_drv);
|
||||
}
|
||||
63
include/nuttx/rpmsg/rpmsg_virtio_ivshmem.h
Normal file
63
include/nuttx/rpmsg/rpmsg_virtio_ivshmem.h
Normal file
@ -0,0 +1,63 @@
|
||||
/****************************************************************************
|
||||
* include/nuttx/rpmsg/rpmsg_virtio_ivshmem.h
|
||||
*
|
||||
* Licensed to the Apache Software Foundation (ASF) under one or more
|
||||
* contributor license agreements. See the NOTICE file distributed with
|
||||
* this work for additional information regarding copyright ownership. The
|
||||
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance with the
|
||||
* License. You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
* License for the specific language governing permissions and limitations
|
||||
* under the License.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __INCLUDE_NUTTX_RPMSG_RPMSG_VIRTIO_IVSHMEM_H
|
||||
#define __INCLUDE_NUTTX_RPMSG_RPMSG_VIRTIO_IVSHMEM_H
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#ifdef CONFIG_RPMSG_VIRTIO_IVSHMEM
|
||||
|
||||
/****************************************************************************
|
||||
* Public Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef __cplusplus
|
||||
#define EXTERN extern "C"
|
||||
extern "C"
|
||||
{
|
||||
#else
|
||||
#define EXTERN extern
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: rpmsg_virtio_ivshmem_driver_init
|
||||
*
|
||||
* Description:
|
||||
* Initializes the rptun ivshmem driver.
|
||||
*
|
||||
* Returned Value:
|
||||
* OK on success, negated errno on failure
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int pci_register_rpmsg_virtio_ivshmem_driver(void);
|
||||
|
||||
#undef EXTERN
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* CONFIG_RPMSG_VIRTIO_IVSHMEM */
|
||||
#endif /* __INCLUDE_NUTTX_RPMSG_RPMSG_VIRTIO_IVSHMEM_H */
|
||||
Loading…
Reference in New Issue
Block a user