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/*
* Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed 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.
*/
#include <vnet/devices/virtio/virtio.h>
#include <vnet/devices/virtio/pci.h>
/* common configuration */
#define VIRTIO_FEATURE_SELECT_HI 1
#define VIRTIO_FEATURE_SELECT_LO 0
#define VIRTIO_DEVICE_FEATURE_SELECT_OFFSET(v) \
(v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
device_feature_select))
#define VIRTIO_DEVICE_FEATURE_OFFSET(v) \
(v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
device_feature))
#define VIRTIO_DRIVER_FEATURE_SELECT_OFFSET(v) \
(v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
driver_feature_select))
#define VIRTIO_DRIVER_FEATURE_OFFSET(v) \
(v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
driver_feature))
#define VIRTIO_MSIX_CONFIG_VECTOR_OFFSET(v) \
(v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
msix_config))
#define VIRTIO_NUM_QUEUES_OFFSET(v) \
(v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
num_queues))
#define VIRTIO_DEVICE_STATUS_OFFSET(v) \
(v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
device_status))
#define VIRTIO_CONFIG_GENERATION_OFFSET(v) \
(v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
config_generation))
#define VIRTIO_QUEUE_SELECT_OFFSET(v) \
(v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
queue_select))
#define VIRTIO_QUEUE_SIZE_OFFSET(v) \
(v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
queue_size))
#define VIRTIO_QUEUE_MSIX_VECTOR_OFFSET(v) \
(v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
queue_msix_vector))
#define VIRTIO_QUEUE_ENABLE_OFFSET(v) \
(v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
queue_enable))
#define VIRTIO_QUEUE_NOTIFY_OFF_OFFSET(v) \
(v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
queue_notify_off))
#define VIRTIO_QUEUE_DESC_OFFSET(v) \
(v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
queue_desc))
#define VIRTIO_QUEUE_DRIVER_OFFSET(v) \
(v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
queue_driver))
#define VIRTIO_QUEUE_DEVICE_OFFSET(v) \
(v->common_offset + STRUCT_OFFSET_OF (virtio_pci_common_cfg_t, \
queue_device))
/* device configuration */
#define VIRTIO_MAC_OFFSET(v) \
(v->device_offset + STRUCT_OFFSET_OF (virtio_net_config_t, \
mac))
#define VIRTIO_STATUS_OFFSET(v) \
(v->device_offset + STRUCT_OFFSET_OF (virtio_net_config_t, \
status))
#define VIRTIO_MAX_VIRTQUEUE_PAIRS_OFFSET(v) \
(v->device_offset + STRUCT_OFFSET_OF (virtio_net_config_t, \
max_virtqueue_pairs))
#define VIRTIO_MTU_OFFSET(v) \
(v->device_offset + STRUCT_OFFSET_OF (virtio_net_config_t, \
mtu))
/* interrupt service routine */
#define VIRTIO_ISR_OFFSET(v) (v->isr_offset)
/* notification */
#define VIRTIO_NOTIFICATION_OFFSET(v) (v->notify_offset)
#define _(t) \
static_always_inline t \
virtio_pci_reg_read_##t (virtio_if_t * vif, u32 offset) \
{ \
t val; \
val = *(volatile t *) (vif->bar + offset); \
return val; \
}
_(u64);
_(u32);
_(u16);
_(u8);
#undef _
#define _(t) \
static_always_inline void \
virtio_pci_reg_write_##t (virtio_if_t * vif, u32 offset, t val) \
{ \
*(volatile t *) ((u8 *) vif->bar + offset) = val; \
}
_(u64);
_(u32);
_(u16);
_(u8);
#undef _
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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