From mboxrd@z Thu Jan 1 00:00:00 1970 From: Santosh Shukla Subject: [PATCH v5 06/11] virtio: vfio: add api support to rd/wr ioport bar Date: Tue, 19 Jan 2016 17:16:07 +0530 Message-ID: <1453203972-24855-7-git-send-email-sshukla@mvista.com> References: <1453203972-24855-1-git-send-email-sshukla@mvista.com> Cc: Rakesh Krishnamurthy , Rizwan Ansari To: dev@dpdk.org Return-path: Received: from mail-pa0-f48.google.com (mail-pa0-f48.google.com [209.85.220.48]) by dpdk.org (Postfix) with ESMTP id 87513919D for ; Tue, 19 Jan 2016 12:46:53 +0100 (CET) Received: by mail-pa0-f48.google.com with SMTP id cy9so450517597pac.0 for ; Tue, 19 Jan 2016 03:46:53 -0800 (PST) In-Reply-To: <1453203972-24855-1-git-send-email-sshukla@mvista.com> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" For vfio case - Use pread/pwrite api to access virtio ioport space. Applicable for virtio 0.95 spec. Signed-off-by: Santosh Shukla Signed-off-by: Rizwan Ansari Signed-off-by: Rakesh Krishnamurthy --- v4 --> v5: - Removed unnecessary type casting. drivers/net/virtio/virtio_vfio_rw.h | 104 +++++++++++++++++++++++++++++++++++ 1 file changed, 104 insertions(+) create mode 100644 drivers/net/virtio/virtio_vfio_rw.h diff --git a/drivers/net/virtio/virtio_vfio_rw.h b/drivers/net/virtio/virtio_vfio_rw.h new file mode 100644 index 0000000..a9ab04d --- /dev/null +++ b/drivers/net/virtio/virtio_vfio_rw.h @@ -0,0 +1,104 @@ +/* + * BSD LICENSE + * + * Copyright(c) 2016 Cavium Networks. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +#ifndef _VIRTIO_VFIO_RW_H_ +#define _VIRTIO_VFIO_RW_H_ + +#if defined(RTE_EAL_VFIO) && defined(RTE_LIBRTE_EAL_LINUXAPP) + +#include +#include +#include "virtio_logs.h" + +/* vfio rd/rw virtio apis */ +static inline void +ioport_inb(const struct rte_pci_device *pci_dev, uint8_t reg, uint8_t *val) +{ + if (rte_eal_pci_read_bar(pci_dev, val, sizeof(uint8_t), reg, 0) <= 0) { + PMD_DRV_LOG(ERR, "Can't read from PCI bar space"); + return; + } +} + +static inline void +ioport_inw(const struct rte_pci_device *pci_dev, uint16_t reg, uint16_t *val) +{ + if (rte_eal_pci_read_bar(pci_dev, val, sizeof(uint16_t), reg, 0) <= 0) { + PMD_DRV_LOG(ERR, "Can't read from PCI bar space"); + return; + } +} + +static inline void +ioport_inl(const struct rte_pci_device *pci_dev, uint32_t reg, uint32_t *val) +{ + if (rte_eal_pci_read_bar(pci_dev, val, sizeof(uint32_t), reg, 0) <= 0) { + PMD_DRV_LOG(ERR, "Can't read from PCI bar space"); + return; + } +} + +static inline void +ioport_outb_p(const struct rte_pci_device *pci_dev, uint8_t reg, uint8_t val) +{ + if (rte_eal_pci_write_bar(pci_dev, &val, sizeof(uint8_t), + reg, 0) <= 0) { + PMD_DRV_LOG(ERR, "Can't write to PCI bar space"); + return; + } +} + + +static inline void +ioport_outw_p(const struct rte_pci_device *pci_dev, uint16_t reg, uint16_t val) +{ + if (rte_eal_pci_write_bar(pci_dev, &val, sizeof(uint16_t), + reg, 0) <= 0) { + PMD_DRV_LOG(ERR, "Can't write to PCI bar space"); + return; + } +} + + +static inline void +ioport_outl_p(const struct rte_pci_device *pci_dev, uint32_t reg, uint32_t val) +{ + if (rte_eal_pci_write_bar(pci_dev, &val, sizeof(uint32_t), + reg, 0) <= 0) { + PMD_DRV_LOG(ERR, "Can't write to PCI bar space"); + return; + } +} + +#endif /* RTE_EAL_VFIO && RTE_XX_EAL_LINUXAPP */ +#endif /* _VIRTIO_VFIO_RW_H_ */ -- 1.7.9.5