For vfio case - Use pread/pwrite api to access virtio ioport space. Signed-off-by: Santosh Shukla <sshukla at mvista.com> Signed-off-by: Rizwan Ansari <ransari at mvista.com> Signed-off-by: Rakesh Krishnamurthy <rakeshk at mvista.com> --- drivers/net/virtio/virtio_vfio.h | 146 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 146 insertions(+) create mode 100644 drivers/net/virtio/virtio_vfio.h
diff --git a/drivers/net/virtio/virtio_vfio.h b/drivers/net/virtio/virtio_vfio.h new file mode 100644 index 0000000..fd94b30 --- /dev/null +++ b/drivers/net/virtio/virtio_vfio.h @@ -0,0 +1,146 @@ +/* + * BSD LICENSE + * + * Copyright(c) 2015 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_H_ +#define _VIRTIO_VFIO_H_ + +#ifdef RTE_EAL_VFIO +#include <stdio.h> +#include <stdint.h> +#include <rte_pci.h> + +#include "virtio_logs.h" + +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, (uint8_t *)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, (uint16_t *)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, (uint32_t *)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, (uint8_t *)&val, sizeof(uint8_t), + reg, 0) <= 0) { + PMD_DRV_LOG(ERR, "Can't read from 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, (uint16_t *)&val, sizeof(uint16_t), + reg, 0) <= 0) { + PMD_DRV_LOG(ERR, "Can't read from 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, (uint32_t *)&val, sizeof(uint32_t), + reg, 0) <= 0) { + PMD_DRV_LOG(ERR, "Can't read from PCI bar space"); + return; + } +} + +#define VIRTIO_READ_REG_1(hw, reg) \ +({ \ + uint8_t ret; \ + ioport_inb(((hw)->pci_dev), reg, &ret); \ + ret; \ +}) + +#define VIRTIO_WRITE_REG_1(hw, reg, val) \ +({ \ + ioport_outb_p(((hw)->pci_dev), reg, (uint8_t)val); \ +}) + +#define VIRTIO_READ_REG_2(hw, reg) \ +({ \ + uint16_t ret; \ + ioport_inw(((hw)->pci_dev), reg, &ret); \ + ret; \ +}) + +#define VIRTIO_WRITE_REG_2(hw, reg, val) \ +({ \ + ioport_outw_p(((hw)->pci_dev), reg, (uint16_t)(val));\ +}) + +#define VIRTIO_READ_REG_4(hw, reg) \ +({ \ + uint32_t ret; \ + ioport_inl(((hw)->pci_dev), reg, &ret); \ + ret; \ +}) + +#define VIRTIO_WRITE_REG_4(hw, reg, val) \ +({ \ + ioport_outl_p(((hw)->pci_dev), reg, (uint32_t)(val));\ +}) + +#else /* !RTE_EAL_VFIO */ + +#error "vfio not supported!!! pl. enable vfio config for your platform" +#endif /* RTE_EAL_VFIO */ +#endif /* _VIRTIO_VFIO_H_ */ -- 1.7.9.5