devices/virtio/vhost_user_api.c
devices/virtio/virtio.c
devices/virtio/virtio_api.c
+ devices/virtio/virtio_pci_legacy.c
devices/virtio/virtio_types_api.c
)
list(APPEND VNET_HEADERS
devices/virtio/pci.h
devices/virtio/virtio.h
+ devices/virtio/virtio_pci_legacy.h
devices/virtio/vhost_user.h
devices/virtio/virtio_types_api.h
)
{
vif = pool_elt_at_index (vim->interfaces, hi->dev_instance);
if (vif->type == VIRTIO_IF_TYPE_PCI)
- debug_device_config_space (vm, vif);
+ vif->virtio_pci_func->device_debug_config_space (vm, vif);
}
virtio_show (vm, hw_if_indices, show_descr, VIRTIO_IF_TYPE_PCI);
#define PCI_MSIX_ENABLE 0x8000
-#define PCI_CONFIG_SIZE(vif) ((vif->msix_enabled == VIRTIO_MSIX_ENABLED) ? \
- 24 : 20)
-
static pci_device_id_t virtio_pci_device_ids[] = {
{
.vendor_id = PCI_VENDOR_ID_VIRTIO,
{0},
};
-static void
-virtio_pci_legacy_read_config (vlib_main_t * vm, virtio_if_t * vif, void *dst,
- int len, u32 addr)
-{
- u32 size = 0;
- vlib_pci_dev_handle_t h = vif->pci_dev_handle;
-
- while (len > 0)
- {
- if (len >= 4)
- {
- size = 4;
- vlib_pci_read_io_u32 (vm, h, PCI_CONFIG_SIZE (vif) + addr, dst);
- }
- else if (len >= 2)
- {
- size = 2;
- vlib_pci_read_io_u16 (vm, h, PCI_CONFIG_SIZE (vif) + addr, dst);
- }
- else
- {
- size = 1;
- vlib_pci_read_io_u8 (vm, h, PCI_CONFIG_SIZE (vif) + addr, dst);
- }
- dst = (u8 *) dst + size;
- addr += size;
- len -= size;
- }
-}
-
-static void
-virtio_pci_legacy_write_config (vlib_main_t * vm, virtio_if_t * vif,
- void *src, int len, u32 addr)
-{
- u32 size = 0;
- vlib_pci_dev_handle_t h = vif->pci_dev_handle;
-
- while (len > 0)
- {
- if (len >= 4)
- {
- size = 4;
- vlib_pci_write_io_u32 (vm, h, PCI_CONFIG_SIZE (vif) + addr, src);
- }
- else if (len >= 2)
- {
- size = 2;
- vlib_pci_write_io_u16 (vm, h, PCI_CONFIG_SIZE (vif) + addr, src);
- }
- else
- {
- size = 1;
- vlib_pci_write_io_u8 (vm, h, PCI_CONFIG_SIZE (vif) + addr, src);
- }
- src = (u8 *) src + size;
- addr += size;
- len -= size;
- }
-}
-
-static u64
-virtio_pci_legacy_get_host_features (vlib_main_t * vm, virtio_if_t * vif)
-{
- u32 features;
- vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_HOST_FEATURES,
- &features);
- return features;
-}
-
-static u32
-virtio_pci_legacy_get_guest_features (vlib_main_t * vm, virtio_if_t * vif)
-{
- u32 feature = 0;
- vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_GUEST_FEATURES,
- &feature);
- vif->features = feature;
- return feature;
-}
-
-static u32
-virtio_pci_legacy_set_guest_features (vlib_main_t * vm, virtio_if_t * vif,
- u64 features)
-{
- if ((features >> 32) != 0)
- {
- clib_warning ("only 32 bit features are allowed for legacy virtio!");
- }
- u32 feature = 0, guest_features = (u32) features;
- vlib_pci_write_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_GUEST_FEATURES,
- &guest_features);
- vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_GUEST_FEATURES,
- &feature);
- return feature;
-}
-
-static u8
-virtio_pci_legacy_get_status (vlib_main_t * vm, virtio_if_t * vif)
-{
- u8 status = 0;
- vlib_pci_read_io_u8 (vm, vif->pci_dev_handle, VIRTIO_PCI_STATUS, &status);
- return status;
-}
-
-static void
-virtio_pci_legacy_set_status (vlib_main_t * vm, virtio_if_t * vif, u8 status)
-{
- if (status != VIRTIO_CONFIG_STATUS_RESET)
- status |= virtio_pci_legacy_get_status (vm, vif);
- vlib_pci_write_io_u8 (vm, vif->pci_dev_handle, VIRTIO_PCI_STATUS, &status);
-}
-
-static u8
-virtio_pci_legacy_reset (vlib_main_t * vm, virtio_if_t * vif)
-{
- virtio_pci_legacy_set_status (vm, vif, VIRTIO_CONFIG_STATUS_RESET);
- return virtio_pci_legacy_get_status (vm, vif);
-}
-
-static u8
-virtio_pci_legacy_get_isr (vlib_main_t * vm, virtio_if_t * vif)
-{
- u8 isr = 0;
- vlib_pci_read_io_u8 (vm, vif->pci_dev_handle, VIRTIO_PCI_ISR, &isr);
- return isr;
-}
-
-static u16
-virtio_pci_legacy_get_queue_num (vlib_main_t * vm, virtio_if_t * vif,
- u16 queue_id)
-{
- u16 queue_num = 0;
- vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
- &queue_id);
- vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_NUM,
- &queue_num);
- return queue_num;
-}
-
-static int
-virtio_pci_legacy_setup_queue (vlib_main_t * vm, virtio_if_t * vif,
- u16 queue_id, void *p)
-{
- u64 addr = vlib_physmem_get_pa (vm, p) >> VIRTIO_PCI_QUEUE_ADDR_SHIFT;
- u32 addr2 = 0;
- vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
- &queue_id);
- vlib_pci_write_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_PFN,
- (u32 *) & addr);
- vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_PFN,
- &addr2);
- if ((u32) addr == addr2)
- return 0;
- return 1;
-}
-
-static void
-virtio_pci_legacy_del_queue (vlib_main_t * vm, virtio_if_t * vif,
- u16 queue_id)
-{
- u32 src = 0;
- vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
- &queue_id);
- vlib_pci_write_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_PFN, &src);
-}
-
-inline void
-virtio_pci_legacy_notify_queue (vlib_main_t * vm, virtio_if_t * vif,
- u16 queue_id)
-{
- vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_NOTIFY,
- &queue_id);
-}
-
-/* Enable one vector (0) for Link State Intrerrupt */
-static u16
-virtio_pci_legacy_set_config_irq (vlib_main_t * vm, virtio_if_t * vif,
- u16 vec)
-{
- vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_CONFIG_VECTOR,
- &vec);
- vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_CONFIG_VECTOR,
- &vec);
- return vec;
-}
-
-static u16
-virtio_pci_legacy_set_queue_irq (vlib_main_t * vm, virtio_if_t * vif, u16 vec,
- u16 queue_id)
-{
- vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
- &queue_id);
- vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_QUEUE_VECTOR,
- &vec);
- vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_QUEUE_VECTOR,
- &vec);
- return vec;
-}
-
static u32
virtio_pci_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hw,
u32 flags)
static clib_error_t *
virtio_pci_get_max_virtqueue_pairs (vlib_main_t * vm, virtio_if_t * vif)
{
- virtio_net_config_t config;
clib_error_t *error = 0;
u16 max_queue_pairs = 1;
if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_MQ))
{
- virtio_pci_legacy_read_config (vm, vif, &config.max_virtqueue_pairs,
- sizeof (config.max_virtqueue_pairs),
- STRUCT_OFFSET_OF (virtio_net_config_t,
- max_virtqueue_pairs));
- max_queue_pairs = config.max_virtqueue_pairs;
+ max_queue_pairs = vif->virtio_pci_func->get_max_queue_pairs (vm, vif);
}
virtio_log_debug (vif, "max queue pair is %x", max_queue_pairs);
static void
virtio_pci_set_mac (vlib_main_t * vm, virtio_if_t * vif)
{
- virtio_pci_legacy_write_config (vm, vif, vif->mac_addr,
- sizeof (vif->mac_addr), 0);
+ if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_MAC))
+ vif->virtio_pci_func->set_mac (vm, vif);
}
static u32
{
if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_MAC))
{
- virtio_pci_legacy_read_config (vm, vif, vif->mac_addr,
- sizeof (vif->mac_addr), 0);
+ vif->virtio_pci_func->get_mac (vm, vif);
return 0;
}
return 1;
*/
u16 status = 1;
if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_STATUS))
- virtio_pci_legacy_read_config (vm, vif, &status, sizeof (status), /* mac */
- STRUCT_OFFSET_OF (virtio_net_config_t,
- status));
+ status = vif->virtio_pci_func->get_device_status (vm, vif);
return status;
}
u8 isr = 0;
u16 line = 0;
- isr = virtio_pci_legacy_get_isr (vm, vif);
+ isr = vif->virtio_pci_func->get_isr (vm, vif);
/*
* If the lower bit is set: look through the used rings of
}
}
-inline void
-debug_device_config_space (vlib_main_t * vm, virtio_if_t * vif)
-{
- u32 data_u32;
- u16 data_u16;
- u8 data_u8;
- vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_HOST_FEATURES,
- &data_u32);
- vlib_cli_output (vm, "remote features 0x%lx", data_u32);
- vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_GUEST_FEATURES,
- &data_u32);
- vlib_cli_output (vm, "guest features 0x%lx", data_u32);
- vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_PFN,
- &data_u32);
- vlib_cli_output (vm, "queue address 0x%lx", data_u32);
- vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_NUM,
- &data_u16);
- vlib_cli_output (vm, "queue size 0x%x", data_u16);
- vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
- &data_u16);
- vlib_cli_output (vm, "queue select 0x%x", data_u16);
- vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_NOTIFY,
- &data_u16);
- vlib_cli_output (vm, "queue notify 0x%x", data_u16);
- vlib_pci_read_io_u8 (vm, vif->pci_dev_handle, VIRTIO_PCI_STATUS, &data_u8);
- vlib_cli_output (vm, "status 0x%x", data_u8);
- vlib_pci_read_io_u8 (vm, vif->pci_dev_handle, VIRTIO_PCI_ISR, &data_u8);
- vlib_cli_output (vm, "isr 0x%x", data_u8);
-
- if (vif->msix_enabled == VIRTIO_MSIX_ENABLED)
- {
- vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_CONFIG_VECTOR,
- &data_u16);
- vlib_cli_output (vm, "config vector 0x%x", data_u16);
- u16 queue_id = 0;
- vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
- &queue_id);
- vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_QUEUE_VECTOR,
- &data_u16);
- vlib_cli_output (vm, "queue vector for queue (0) 0x%x", data_u16);
- }
-
- u8 mac[6];
- virtio_pci_legacy_read_config (vm, vif, mac, sizeof (mac), 0);
- vlib_cli_output (vm, "mac %U", format_ethernet_address, mac);
- virtio_pci_legacy_read_config (vm, vif, &data_u16, sizeof (u16), /* offset to status */
- 6);
- vlib_cli_output (vm, "link up/down status 0x%x", data_u16);
- virtio_pci_legacy_read_config (vm, vif, &data_u16, sizeof (u16),
- /* offset to max_virtqueue */ 8);
- vlib_cli_output (vm, "num of virtqueue 0x%x", data_u16);
- virtio_pci_legacy_read_config (vm, vif, &data_u16, sizeof (u16), /* offset to mtu */
- 10);
- vlib_cli_output (vm, "mtu 0x%x", data_u16);
-
- u32 i = PCI_CONFIG_SIZE (vif) + 12, a = 4;
- i += a;
- i &= ~a;
- for (; i < 64; i += 4)
- {
- u32 data = 0;
- vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, i, &data);
- vlib_cli_output (vm, "0x%lx", data);
- }
-}
-
struct virtio_ctrl_msg
{
struct virtio_net_ctrl_hdr ctrl;
status =
virtio_pci_send_ctrl_msg (vm, vif, &offload_hdr, sizeof (offloads));
virtio_log_debug (vif, "disable offloads");
- vif->remote_features = virtio_pci_legacy_get_host_features (vm, vif);
- virtio_pci_legacy_get_guest_features (vm, vif);
+ vif->remote_features = vif->virtio_pci_func->get_device_features (vm, vif);
+ vif->virtio_pci_func->get_driver_features (vm, vif);
return status;
}
status =
virtio_pci_send_ctrl_msg (vm, vif, &csum_offload_hdr, sizeof (offloads));
virtio_log_debug (vif, "enable checksum offload");
- vif->remote_features = virtio_pci_legacy_get_host_features (vm, vif);
- virtio_pci_legacy_get_guest_features (vm, vif);
+ vif->remote_features = vif->virtio_pci_func->get_device_features (vm, vif);
+ vif->features = vif->virtio_pci_func->get_driver_features (vm, vif);
return status;
}
status = virtio_pci_send_ctrl_msg (vm, vif, &gso_hdr, sizeof (offloads));
virtio_log_debug (vif, "enable gso");
- vif->remote_features = virtio_pci_legacy_get_host_features (vm, vif);
- virtio_pci_legacy_get_guest_features (vm, vif);
+ vif->remote_features = vif->virtio_pci_func->get_device_features (vm, vif);
+ vif->virtio_pci_func->get_driver_features (vm, vif);
return status;
}
u32 i = 0;
void *ptr = NULL;
- queue_size = virtio_pci_legacy_get_queue_num (vm, vif, queue_num);
+ queue_size = vif->virtio_pci_func->get_queue_size (vm, vif, queue_num);
if (!virtio_pci_queue_size_valid (queue_size))
clib_warning ("queue size is not valid");
vring->size = queue_size;
virtio_log_debug (vif, "control-queue: number %u, size %u", queue_num,
queue_size);
- virtio_pci_legacy_setup_queue (vm, vif, queue_num, ptr);
+ vif->virtio_pci_func->setup_queue (vm, vif, queue_num, ptr);
vring->kick_fd = -1;
return error;
u32 i = 0;
void *ptr = NULL;
- queue_size = virtio_pci_legacy_get_queue_num (vm, vif, queue_num);
+ queue_size = vif->virtio_pci_func->get_queue_size (vm, vif, queue_num);
if (!virtio_pci_queue_size_valid (queue_size))
clib_warning ("queue size is not valid");
queue_size);
}
vring->size = queue_size;
- if (virtio_pci_legacy_setup_queue (vm, vif, queue_num, ptr))
+ if (vif->virtio_pci_func->setup_queue (vm, vif, queue_num, ptr))
return clib_error_return (0, "error in queue address setup");
vring->kick_fd = -1;
if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_MTU))
{
- virtio_net_config_t config;
- virtio_pci_legacy_read_config (vm, vif, &config.mtu,
- sizeof (config.mtu),
- STRUCT_OFFSET_OF (virtio_net_config_t,
- mtu));
- if (config.mtu < 64)
+ u16 mtu = 0;
+ mtu = vif->virtio_pci_func->get_mtu (vm, vif);
+
+ if (mtu < 64)
vif->features &= ~VIRTIO_FEATURE (VIRTIO_NET_F_MTU);
}
- vif->features =
- virtio_pci_legacy_set_guest_features (vm, vif, vif->features);
+ vif->virtio_pci_func->set_driver_features (vm, vif, vif->features);
+ vif->features = vif->virtio_pci_func->get_driver_features (vm, vif);
}
void
virtio_pci_read_device_feature (vlib_main_t * vm, virtio_if_t * vif)
{
- vif->remote_features = virtio_pci_legacy_get_host_features (vm, vif);
+ vif->remote_features = vif->virtio_pci_func->get_device_features (vm, vif);
}
int
/*
* Reset the device
*/
- status = virtio_pci_legacy_reset (vm, vif);
+ status = vif->virtio_pci_func->device_reset (vm, vif);
/*
* Set the Acknowledge status bit
*/
- virtio_pci_legacy_set_status (vm, vif, VIRTIO_CONFIG_STATUS_ACK);
+ vif->virtio_pci_func->set_status (vm, vif, VIRTIO_CONFIG_STATUS_ACK);
/*
* Set the Driver status bit
*/
- virtio_pci_legacy_set_status (vm, vif, VIRTIO_CONFIG_STATUS_DRIVER);
+ vif->virtio_pci_func->set_status (vm, vif, VIRTIO_CONFIG_STATUS_DRIVER);
/*
* Read the status and verify it
*/
- status = virtio_pci_legacy_get_status (vm, vif);
+ status = vif->virtio_pci_func->get_status (vm, vif);
if (!
((status & VIRTIO_CONFIG_STATUS_ACK)
&& (status & VIRTIO_CONFIG_STATUS_DRIVER)))
pos = cap.cap_next;
}
+ vif->virtio_pci_func = &virtio_pci_legacy_func;
+
if (common_cfg == 0 || notify_base == 0 || dev_cfg == 0 || isr == 0)
{
virtio_log_debug (vif, "legacy virtio pci device found");
/*
* After FEATURE_OK, driver should not accept new feature bits
*/
- virtio_pci_legacy_set_status (vm, vif, VIRTIO_CONFIG_STATUS_FEATURES_OK);
- status = virtio_pci_legacy_get_status (vm, vif);
+ vif->virtio_pci_func->set_status (vm, vif,
+ VIRTIO_CONFIG_STATUS_FEATURES_OK);
+ status = vif->virtio_pci_func->get_status (vm, vif);
if (!(status & VIRTIO_CONFIG_STATUS_FEATURES_OK))
{
args->rv = VNET_API_ERROR_UNSUPPORTED;
args->rv = VNET_API_ERROR_INIT_FAILED;
virtio_log_error (vif, "%s (%u) %s", "error in rxq-queue",
RX_QUEUE (i), "initialization");
- clib_error_return (error, "%s (%u) %s", "error in rxq-queue",
- RX_QUEUE (i), "initialization");
+ error =
+ clib_error_return (error, "%s (%u) %s", "error in rxq-queue",
+ RX_QUEUE (i), "initialization");
+ goto err;
}
else
{
args->rv = VNET_API_ERROR_INIT_FAILED;
virtio_log_error (vif, "%s (%u) %s", "error in txq-queue",
TX_QUEUE (i), "initialization");
- clib_error_return (error, "%s (%u) %s", "error in txq-queue",
- TX_QUEUE (i), "initialization");
+ error =
+ clib_error_return (error, "%s (%u) %s", "error in txq-queue",
+ TX_QUEUE (i), "initialization");
+ goto err;
}
else
{
if (vif->msix_enabled == VIRTIO_MSIX_ENABLED)
{
int i, j;
- if (virtio_pci_legacy_set_config_irq (vm, vif, 0) ==
+ if (vif->virtio_pci_func->set_config_irq (vm, vif, 0) ==
VIRTIO_MSI_NO_VECTOR)
{
virtio_log_warning (vif, "config vector 0 is not set");
}
for (i = 0, j = 1; i < vif->max_queue_pairs; i++, j++)
{
- if (virtio_pci_legacy_set_queue_irq (vm, vif, j, RX_QUEUE (i)) ==
+ if (vif->virtio_pci_func->set_queue_irq (vm, vif, j,
+ RX_QUEUE (i)) ==
VIRTIO_MSI_NO_VECTOR)
{
virtio_log_warning (vif, "queue (%u) vector is not set at %u",
/*
* set the driver status OK
*/
- virtio_pci_legacy_set_status (vm, vif, VIRTIO_CONFIG_STATUS_DRIVER_OK);
- vif->status = virtio_pci_legacy_get_status (vm, vif);
+ vif->virtio_pci_func->set_status (vm, vif, VIRTIO_CONFIG_STATUS_DRIVER_OK);
+ vif->status = vif->virtio_pci_func->get_status (vm, vif);
err:
return error;
}
for (i = 0; i < vif->max_queue_pairs; i++)
{
- virtio_pci_legacy_del_queue (vm, vif, RX_QUEUE (i));
- virtio_pci_legacy_del_queue (vm, vif, TX_QUEUE (i));
+ vif->virtio_pci_func->del_queue (vm, vif, RX_QUEUE (i));
+ vif->virtio_pci_func->del_queue (vm, vif, TX_QUEUE (i));
}
if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_CTRL_VQ))
- virtio_pci_legacy_del_queue (vm, vif, vif->max_queue_pairs * 2);
+ vif->virtio_pci_func->del_queue (vm, vif, vif->max_queue_pairs * 2);
- virtio_pci_legacy_reset (vm, vif);
+ vif->virtio_pci_func->device_reset (vm, vif);
if (vif->hw_if_index)
{
/* VirtIO ABI version, this must match exactly. */
#define VIRTIO_PCI_ABI_VERSION 0
-/*
- * VirtIO Header, located in BAR 0.
- */
-#define VIRTIO_PCI_HOST_FEATURES 0 /* host's supported features (32bit, RO) */
-#define VIRTIO_PCI_GUEST_FEATURES 4 /* guest's supported features (32, RW) */
-#define VIRTIO_PCI_QUEUE_PFN 8 /* physical address of VQ (32, RW) */
-#define VIRTIO_PCI_QUEUE_NUM 12 /* number of ring entries (16, RO) */
-#define VIRTIO_PCI_QUEUE_SEL 14 /* current VQ selection (16, RW) */
-#define VIRTIO_PCI_QUEUE_NOTIFY 16 /* notify host regarding VQ (16, RW) */
-#define VIRTIO_PCI_STATUS 18 /* device status register (8, RW) */
-#define VIRTIO_PCI_ISR 19 /* interrupt status register, reading
- * also clears the register (8, RO) */
-/* Only if MSIX is enabled: */
-#define VIRTIO_MSI_CONFIG_VECTOR 20 /* configuration change vector (16, RW) */
-#define VIRTIO_MSI_QUEUE_VECTOR 22 /* vector for selected VQ notifications
- (16, RW) */
-
/*
* Vector value used to disable MSI for queue.
* define in include/linux/virtio_pci.h
u32 queue_used_hi; /* read-write */
} virtio_pci_common_cfg_t;
+typedef struct
+{
+ u8 mac[6];
+ u16 status;
+ u16 max_virtqueue_pairs;
+ u16 mtu;
+} virtio_net_config_t;
+
typedef struct
{
u64 addr;
/* u16 avail_event; */
} vring_used_t;
+typedef struct _virtio_pci_func
+{
+ void (*read_config) (vlib_main_t * vm, virtio_if_t * vif, void *dst,
+ int len, u32 addr);
+ void (*write_config) (vlib_main_t * vm, virtio_if_t * vif, void *src,
+ int len, u32 addr);
+
+ u64 (*get_device_features) (vlib_main_t * vm, virtio_if_t * vif);
+ u64 (*get_driver_features) (vlib_main_t * vm, virtio_if_t * vif);
+ void (*set_driver_features) (vlib_main_t * vm, virtio_if_t * vif,
+ u64 features);
+
+ u8 (*get_status) (vlib_main_t * vm, virtio_if_t * vif);
+ void (*set_status) (vlib_main_t * vm, virtio_if_t * vif, u8 status);
+ u8 (*device_reset) (vlib_main_t * vm, virtio_if_t * vif);
+
+ u8 (*get_isr) (vlib_main_t * vm, virtio_if_t * vif);
+
+ u16 (*get_queue_size) (vlib_main_t * vm, virtio_if_t * vif, u16 queue_id);
+ void (*set_queue_size) (vlib_main_t * vm, virtio_if_t * vif, u16 queue_id,
+ u16 queue_size);
+ u8 (*setup_queue) (vlib_main_t * vm, virtio_if_t * vif, u16 queue_id,
+ void *p);
+ void (*del_queue) (vlib_main_t * vm, virtio_if_t * vif, u16 queue_id);
+ void (*notify_queue) (vlib_main_t * vm, virtio_if_t * vif, u16 queue_id);
+
+ u16 (*set_config_irq) (vlib_main_t * vm, virtio_if_t * vif, u16 vec);
+ u16 (*set_queue_irq) (vlib_main_t * vm, virtio_if_t * vif, u16 vec,
+ u16 queue_id);
+
+ void (*get_mac) (vlib_main_t * vm, virtio_if_t * vif);
+ void (*set_mac) (vlib_main_t * vm, virtio_if_t * vif);
+ u16 (*get_device_status) (vlib_main_t * vm, virtio_if_t * vif);
+ u16 (*get_max_queue_pairs) (vlib_main_t * vm, virtio_if_t * vif);
+ u16 (*get_mtu) (vlib_main_t * vm, virtio_if_t * vif);
+ void (*device_debug_config_space) (vlib_main_t * vm, virtio_if_t * vif);
+} virtio_pci_func_t;
+
typedef struct
{
u32 addr;
clib_error_t *error;
} virtio_pci_create_if_args_t;
-extern void debug_device_config_space (vlib_main_t * vm, virtio_if_t * vif);
+extern const virtio_pci_func_t virtio_pci_legacy_func;
+
extern void device_status (vlib_main_t * vm, virtio_if_t * vif);
void virtio_pci_create_if (vlib_main_t * vm,
virtio_pci_create_if_args_t * args);
#undef _
} virtio_if_flag_t;
-#define VIRTIO_NUM_RX_DESC 256
-#define VIRTIO_NUM_TX_DESC 256
-
#define VIRTIO_FEATURE(X) (1ULL << X)
#define TX_QUEUE(X) ((X*2) + 1)
#define TX_QUEUE_ACCESS(X) (X/2)
#define RX_QUEUE_ACCESS(X) (X/2)
+#define VIRTIO_NUM_RX_DESC 256
+#define VIRTIO_NUM_TX_DESC 256
+
#define foreach_virtio_if_types \
_ (TAP, 0) \
_ (TUN, 1) \
VIRTIO_IF_N_TYPES = (1 << 3),
} virtio_if_type_t;
-
-typedef struct
-{
- u8 mac[6];
- u16 status;
- u16 max_virtqueue_pairs;
- u16 mtu;
-} virtio_net_config_t;
-
#define VIRTIO_RING_FLAG_MASK_INT 1
typedef struct
u32 as_u32;
} pci_addr_t;
+typedef struct _virtio_pci_func virtio_pci_func_t;
+
typedef struct
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
u32 tap_flags;
int ifindex;
virtio_vring_t *cxq_vring;
+ const virtio_pci_func_t *virtio_pci_func;
} virtio_if_t;
typedef struct
}
}
-
#define virtio_log_debug(vif, f, ...) \
{ \
vlib_log(VLIB_LOG_LEVEL_DEBUG, virtio_main.log_default, \
--- /dev/null
+/*
+ * Copyright (c) 2018 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 <vlib/vlib.h>
+#include <vlib/pci/pci.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/ip/ip4_packet.h>
+#include <vnet/ip/ip6_packet.h>
+#include <vnet/devices/virtio/virtio.h>
+#include <vnet/devices/virtio/virtio_pci_legacy.h>
+#include <vnet/devices/virtio/pci.h>
+
+#define PCI_CONFIG_SIZE(vif) ((vif->msix_enabled == VIRTIO_MSIX_ENABLED) ? \
+ 24 : 20)
+
+static void
+virtio_pci_legacy_read_config (vlib_main_t * vm, virtio_if_t * vif, void *dst,
+ int len, u32 addr)
+{
+ u32 size = 0;
+ vlib_pci_dev_handle_t h = vif->pci_dev_handle;
+
+ while (len > 0)
+ {
+ if (len >= 4)
+ {
+ size = 4;
+ vlib_pci_read_io_u32 (vm, h, PCI_CONFIG_SIZE (vif) + addr, dst);
+ }
+ else if (len >= 2)
+ {
+ size = 2;
+ vlib_pci_read_io_u16 (vm, h, PCI_CONFIG_SIZE (vif) + addr, dst);
+ }
+ else
+ {
+ size = 1;
+ vlib_pci_read_io_u8 (vm, h, PCI_CONFIG_SIZE (vif) + addr, dst);
+ }
+ dst = (u8 *) dst + size;
+ addr += size;
+ len -= size;
+ }
+}
+
+static void
+virtio_pci_legacy_write_config (vlib_main_t * vm, virtio_if_t * vif,
+ void *src, int len, u32 addr)
+{
+ u32 size = 0;
+ vlib_pci_dev_handle_t h = vif->pci_dev_handle;
+
+ while (len > 0)
+ {
+ if (len >= 4)
+ {
+ size = 4;
+ vlib_pci_write_io_u32 (vm, h, PCI_CONFIG_SIZE (vif) + addr, src);
+ }
+ else if (len >= 2)
+ {
+ size = 2;
+ vlib_pci_write_io_u16 (vm, h, PCI_CONFIG_SIZE (vif) + addr, src);
+ }
+ else
+ {
+ size = 1;
+ vlib_pci_write_io_u8 (vm, h, PCI_CONFIG_SIZE (vif) + addr, src);
+ }
+ src = (u8 *) src + size;
+ addr += size;
+ len -= size;
+ }
+}
+
+static u64
+virtio_pci_legacy_get_host_features (vlib_main_t * vm, virtio_if_t * vif)
+{
+ u32 host_features;
+ vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_HOST_FEATURES,
+ &host_features);
+ return host_features;
+}
+
+static u64
+virtio_pci_legacy_get_guest_features (vlib_main_t * vm, virtio_if_t * vif)
+{
+ u32 guest_features = 0;
+ vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_GUEST_FEATURES,
+ &guest_features);
+ vif->features = guest_features;
+ return guest_features;
+}
+
+static void
+virtio_pci_legacy_set_guest_features (vlib_main_t * vm, virtio_if_t * vif,
+ u64 guest_features)
+{
+ if ((guest_features >> 32) != 0)
+ {
+ clib_warning ("only 32 bit features are allowed for legacy virtio!");
+ }
+ u32 features = 0;
+ vlib_pci_write_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_GUEST_FEATURES,
+ (u32 *) & guest_features);
+ vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_GUEST_FEATURES,
+ &features);
+ if (features != (u32) guest_features)
+ {
+ clib_warning ("legacy set guest features failed!");
+ }
+}
+
+static u8
+virtio_pci_legacy_get_status (vlib_main_t * vm, virtio_if_t * vif)
+{
+ u8 status = 0;
+ vlib_pci_read_io_u8 (vm, vif->pci_dev_handle, VIRTIO_PCI_STATUS, &status);
+ return status;
+}
+
+static void
+virtio_pci_legacy_set_status (vlib_main_t * vm, virtio_if_t * vif, u8 status)
+{
+ if (status != VIRTIO_CONFIG_STATUS_RESET)
+ status |= virtio_pci_legacy_get_status (vm, vif);
+ vlib_pci_write_io_u8 (vm, vif->pci_dev_handle, VIRTIO_PCI_STATUS, &status);
+}
+
+static u8
+virtio_pci_legacy_reset (vlib_main_t * vm, virtio_if_t * vif)
+{
+ virtio_pci_legacy_set_status (vm, vif, VIRTIO_CONFIG_STATUS_RESET);
+ return virtio_pci_legacy_get_status (vm, vif);
+}
+
+static u8
+virtio_pci_legacy_get_isr (vlib_main_t * vm, virtio_if_t * vif)
+{
+ u8 isr = 0;
+ vlib_pci_read_io_u8 (vm, vif->pci_dev_handle, VIRTIO_PCI_ISR, &isr);
+ return isr;
+}
+
+static u16
+virtio_pci_legacy_get_queue_num (vlib_main_t * vm, virtio_if_t * vif,
+ u16 queue_id)
+{
+ u16 queue_num = 0;
+ vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
+ &queue_id);
+ vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_NUM,
+ &queue_num);
+ return queue_num;
+}
+
+static void
+virtio_pci_legacy_set_queue_num (vlib_main_t * vm, virtio_if_t * vif,
+ u16 queue_id, u16 queue_size)
+{
+ /* do nothing */
+}
+
+static u8
+virtio_pci_legacy_setup_queue (vlib_main_t * vm, virtio_if_t * vif,
+ u16 queue_id, void *p)
+{
+ u64 addr = vlib_physmem_get_pa (vm, p) >> VIRTIO_PCI_QUEUE_ADDR_SHIFT;
+ u32 addr2 = 0;
+ vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
+ &queue_id);
+ vlib_pci_write_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_PFN,
+ (u32 *) & addr);
+ vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_PFN,
+ &addr2);
+ if ((u32) addr == addr2)
+ return 0;
+
+ clib_warning ("legacy queue setup failed!");
+ return 1;
+}
+
+static void
+virtio_pci_legacy_del_queue (vlib_main_t * vm, virtio_if_t * vif,
+ u16 queue_id)
+{
+ u32 src = 0;
+ vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
+ &queue_id);
+ vlib_pci_write_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_PFN, &src);
+}
+
+inline void
+virtio_pci_legacy_notify_queue (vlib_main_t * vm, virtio_if_t * vif,
+ u16 queue_id)
+{
+ vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_NOTIFY,
+ &queue_id);
+}
+
+/* Enable one vector (0) for Link State Intrerrupt */
+static u16
+virtio_pci_legacy_set_config_irq (vlib_main_t * vm, virtio_if_t * vif,
+ u16 vec)
+{
+ vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_CONFIG_VECTOR,
+ &vec);
+ vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_CONFIG_VECTOR,
+ &vec);
+ return vec;
+}
+
+static u16
+virtio_pci_legacy_set_queue_irq (vlib_main_t * vm, virtio_if_t * vif, u16 vec,
+ u16 queue_id)
+{
+ vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
+ &queue_id);
+ vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_QUEUE_VECTOR,
+ &vec);
+ vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_QUEUE_VECTOR,
+ &vec);
+ return vec;
+}
+
+static void
+virtio_pci_legacy_get_mac (vlib_main_t * vm, virtio_if_t * vif)
+{
+ virtio_pci_legacy_read_config (vm, vif, vif->mac_addr,
+ sizeof (vif->mac_addr), 0);
+}
+
+static void
+virtio_pci_legacy_set_mac (vlib_main_t * vm, virtio_if_t * vif)
+{
+ virtio_pci_legacy_write_config (vm, vif, vif->mac_addr,
+ sizeof (vif->mac_addr), 0);
+}
+
+static u16
+virtio_pci_legacy_get_device_status (vlib_main_t * vm, virtio_if_t * vif)
+{
+ u16 status = 0;
+ virtio_pci_legacy_read_config (vm, vif, &status,
+ sizeof (status),
+ STRUCT_OFFSET_OF
+ (virtio_net_config_t, status));
+ return status;
+}
+
+static u16
+virtio_pci_legacy_get_max_queue_pairs (vlib_main_t * vm, virtio_if_t * vif)
+{
+ virtio_net_config_t config;
+ virtio_pci_legacy_read_config (vm, vif, &config.max_virtqueue_pairs,
+ sizeof (config.max_virtqueue_pairs),
+ STRUCT_OFFSET_OF
+ (virtio_net_config_t, max_virtqueue_pairs));
+ return config.max_virtqueue_pairs;
+}
+
+static u16
+virtio_pci_legacy_get_mtu (vlib_main_t * vm, virtio_if_t * vif)
+{
+ virtio_net_config_t config;
+ virtio_pci_legacy_read_config (vm, vif, &config.mtu,
+ sizeof (config.mtu),
+ STRUCT_OFFSET_OF (virtio_net_config_t, mtu));
+ return config.mtu;
+}
+
+
+static void
+virtio_pci_legacy_device_debug_config_space (vlib_main_t * vm,
+ virtio_if_t * vif)
+{
+ u32 data_u32;
+ u16 data_u16;
+ u8 data_u8;
+ vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_HOST_FEATURES,
+ &data_u32);
+ vlib_cli_output (vm, "remote features 0x%lx", data_u32);
+ vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_GUEST_FEATURES,
+ &data_u32);
+ vlib_cli_output (vm, "guest features 0x%lx", data_u32);
+ vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_PFN,
+ &data_u32);
+ vlib_cli_output (vm, "queue address 0x%lx", data_u32);
+ vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_NUM,
+ &data_u16);
+ vlib_cli_output (vm, "queue size 0x%x", data_u16);
+ vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
+ &data_u16);
+ vlib_cli_output (vm, "queue select 0x%x", data_u16);
+ vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_NOTIFY,
+ &data_u16);
+ vlib_cli_output (vm, "queue notify 0x%x", data_u16);
+ vlib_pci_read_io_u8 (vm, vif->pci_dev_handle, VIRTIO_PCI_STATUS, &data_u8);
+ vlib_cli_output (vm, "status 0x%x", data_u8);
+ vlib_pci_read_io_u8 (vm, vif->pci_dev_handle, VIRTIO_PCI_ISR, &data_u8);
+ vlib_cli_output (vm, "isr 0x%x", data_u8);
+
+ if (vif->msix_enabled == VIRTIO_MSIX_ENABLED)
+ {
+ vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_CONFIG_VECTOR,
+ &data_u16);
+ vlib_cli_output (vm, "config vector 0x%x", data_u16);
+ u16 queue_id = 0;
+ vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
+ &queue_id);
+ vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_QUEUE_VECTOR,
+ &data_u16);
+ vlib_cli_output (vm, "queue vector for queue (0) 0x%x", data_u16);
+ }
+
+ u8 mac[6];
+ virtio_pci_legacy_read_config (vm, vif, mac, sizeof (mac), 0);
+ vlib_cli_output (vm, "mac %U", format_ethernet_address, mac);
+ virtio_pci_legacy_read_config (vm, vif, &data_u16, sizeof (u16), /* offset to status */
+ 6);
+ vlib_cli_output (vm, "link up/down status 0x%x", data_u16);
+ virtio_pci_legacy_read_config (vm, vif, &data_u16, sizeof (u16),
+ /* offset to max_virtqueue */ 8);
+ vlib_cli_output (vm, "num of virtqueue 0x%x", data_u16);
+ virtio_pci_legacy_read_config (vm, vif, &data_u16, sizeof (u16), /* offset to mtu */
+ 10);
+ vlib_cli_output (vm, "mtu 0x%x", data_u16);
+
+ u32 i = PCI_CONFIG_SIZE (vif) + 12, a = 4;
+ i += a;
+ i &= ~a;
+ for (; i < 64; i += 4)
+ {
+ u32 data = 0;
+ vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, i, &data);
+ vlib_cli_output (vm, "0x%lx", data);
+ }
+}
+
+const virtio_pci_func_t virtio_pci_legacy_func = {
+ .read_config = virtio_pci_legacy_read_config,
+ .write_config = virtio_pci_legacy_write_config,
+ .get_device_features = virtio_pci_legacy_get_host_features,
+ .get_driver_features = virtio_pci_legacy_get_guest_features,
+ .set_driver_features = virtio_pci_legacy_set_guest_features,
+ .get_status = virtio_pci_legacy_get_status,
+ .set_status = virtio_pci_legacy_set_status,
+ .device_reset = virtio_pci_legacy_reset,
+ .get_isr = virtio_pci_legacy_get_isr,
+ .get_queue_size = virtio_pci_legacy_get_queue_num,
+ .set_queue_size = virtio_pci_legacy_set_queue_num,
+ .setup_queue = virtio_pci_legacy_setup_queue,
+ .del_queue = virtio_pci_legacy_del_queue,
+ .notify_queue = virtio_pci_legacy_notify_queue,
+ .set_config_irq = virtio_pci_legacy_set_config_irq,
+ .set_queue_irq = virtio_pci_legacy_set_queue_irq,
+ .get_mac = virtio_pci_legacy_get_mac,
+ .set_mac = virtio_pci_legacy_set_mac,
+ .get_device_status = virtio_pci_legacy_get_device_status,
+ .get_max_queue_pairs = virtio_pci_legacy_get_max_queue_pairs,
+ .get_mtu = virtio_pci_legacy_get_mtu,
+ .device_debug_config_space = virtio_pci_legacy_device_debug_config_space,
+};
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * Copyright (c) 2018 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.
+ */
+
+#ifndef __included_virtio_pci_legacy_h__
+#define __included_virtio_pci_legacy_h__
+
+/*
+ * VirtIO Header, located in BAR 0.
+ */
+#define VIRTIO_PCI_HOST_FEATURES 0 /* host's supported features (32bit, RO) */
+#define VIRTIO_PCI_GUEST_FEATURES 4 /* guest's supported features (32, RW) */
+#define VIRTIO_PCI_QUEUE_PFN 8 /* physical address of VQ (32, RW) */
+#define VIRTIO_PCI_QUEUE_NUM 12 /* number of ring entries (16, RO) */
+#define VIRTIO_PCI_QUEUE_SEL 14 /* current VQ selection (16, RW) */
+#define VIRTIO_PCI_QUEUE_NOTIFY 16 /* notify host regarding VQ (16, RW) */
+#define VIRTIO_PCI_STATUS 18 /* device status register (8, RW) */
+#define VIRTIO_PCI_ISR 19 /* interrupt status register, reading
+ * also clears the register (8, RO) */
+/* Only if MSIX is enabled: */
+#define VIRTIO_MSI_CONFIG_VECTOR 20 /* configuration change vector (16, RW) */
+#define VIRTIO_MSI_QUEUE_VECTOR 22 /* vector for selected VQ notifications
+ (16, RW) */
+#define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12
+
+#endif /* __included_virtio_pci_legacy_h__ */
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / commitdiff