diff options
author | Ido Barnea <ibarnea@cisco.com> | 2015-12-09 05:07:44 +0200 |
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committer | Ido Barnea <ibarnea@cisco.com> | 2015-12-27 08:50:12 +0200 |
commit | 509648b87434b9032d38b8ca5ad470ba3edcc036 (patch) | |
tree | 920548ce9e2e5aeed4c88c1b288290505e7d7987 /src/dpdk22/drivers/net/virtio/virtio_pci.c | |
parent | b161dc672544a913f7f1ddf3a086dd75f2f1134a (diff) |
Adding dpdk 2.2 instead of dpdk 1.8 and making changes to make compilation work.
40G and 10G filters do not work yet.
Diffstat (limited to 'src/dpdk22/drivers/net/virtio/virtio_pci.c')
-rw-r--r-- | src/dpdk22/drivers/net/virtio/virtio_pci.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/src/dpdk22/drivers/net/virtio/virtio_pci.c b/src/dpdk22/drivers/net/virtio/virtio_pci.c new file mode 100644 index 00000000..2245beca --- /dev/null +++ b/src/dpdk22/drivers/net/virtio/virtio_pci.c @@ -0,0 +1,147 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. 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. + */ +#include <stdint.h> + +#include "virtio_pci.h" +#include "virtio_logs.h" + +static uint8_t vtpci_get_status(struct virtio_hw *); + +void +vtpci_read_dev_config(struct virtio_hw *hw, uint64_t offset, + void *dst, int length) +{ + uint64_t off; + uint8_t *d; + int size; + + off = VIRTIO_PCI_CONFIG(hw) + offset; + for (d = dst; length > 0; d += size, off += size, length -= size) { + if (length >= 4) { + size = 4; + *(uint32_t *)d = VIRTIO_READ_REG_4(hw, off); + } else if (length >= 2) { + size = 2; + *(uint16_t *)d = VIRTIO_READ_REG_2(hw, off); + } else { + size = 1; + *d = VIRTIO_READ_REG_1(hw, off); + } + } +} + +void +vtpci_write_dev_config(struct virtio_hw *hw, uint64_t offset, + void *src, int length) +{ + uint64_t off; + uint8_t *s; + int size; + + off = VIRTIO_PCI_CONFIG(hw) + offset; + for (s = src; length > 0; s += size, off += size, length -= size) { + if (length >= 4) { + size = 4; + VIRTIO_WRITE_REG_4(hw, off, *(uint32_t *)s); + } else if (length >= 2) { + size = 2; + VIRTIO_WRITE_REG_2(hw, off, *(uint16_t *)s); + } else { + size = 1; + VIRTIO_WRITE_REG_1(hw, off, *s); + } + } +} + +uint32_t +vtpci_negotiate_features(struct virtio_hw *hw, uint32_t host_features) +{ + uint32_t features; + /* + * Limit negotiated features to what the driver, virtqueue, and + * host all support. + */ + features = host_features & hw->guest_features; + + VIRTIO_WRITE_REG_4(hw, VIRTIO_PCI_GUEST_FEATURES, features); + return features; +} + + +void +vtpci_reset(struct virtio_hw *hw) +{ + /* + * Setting the status to RESET sets the host device to + * the original, uninitialized state. + */ + vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_RESET); + vtpci_get_status(hw); +} + +void +vtpci_reinit_complete(struct virtio_hw *hw) +{ + vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER_OK); +} + +static uint8_t +vtpci_get_status(struct virtio_hw *hw) +{ + return VIRTIO_READ_REG_1(hw, VIRTIO_PCI_STATUS); +} + +void +vtpci_set_status(struct virtio_hw *hw, uint8_t status) +{ + if (status != VIRTIO_CONFIG_STATUS_RESET) + status = (uint8_t)(status | vtpci_get_status(hw)); + + VIRTIO_WRITE_REG_1(hw, VIRTIO_PCI_STATUS, status); +} + +uint8_t +vtpci_isr(struct virtio_hw *hw) +{ + + return VIRTIO_READ_REG_1(hw, VIRTIO_PCI_ISR); +} + + +/* Enable one vector (0) for Link State Intrerrupt */ +uint16_t +vtpci_irq_config(struct virtio_hw *hw, uint16_t vec) +{ + VIRTIO_WRITE_REG_2(hw, VIRTIO_MSI_CONFIG_VECTOR, vec); + return VIRTIO_READ_REG_2(hw, VIRTIO_MSI_CONFIG_VECTOR); +} |