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From: Andy Pei <andy.pei@intel.com>
To: dev@dpdk.org
Cc: chenbo.xia@intel.com, maxime.coquelin@redhat.com, gang.cao@intel.com,
changpeng.liu@intel.com
Subject: [PATCH v2 01/15] vdpa/ifc: add support for virtio blk device
Date: Tue, 25 Jan 2022 17:37:03 +0800
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Re-use the vdpa/ifc code, distinguish blk and net device by pci_device_id.
Blk and net device are implemented with proper feature and ops.
Signed-off-by: Andy Pei <andy.pei@intel.com>
---
drivers/vdpa/ifc/base/ifcvf.h | 16 +++++++-
drivers/vdpa/ifc/ifcvf_vdpa.c | 92 +++++++++++++++++++++++++++++++++++++++----
2 files changed, 98 insertions(+), 10 deletions(-)
diff --git a/drivers/vdpa/ifc/base/ifcvf.h b/drivers/vdpa/ifc/base/ifcvf.h
index 573a35f..01522c6 100644
--- a/drivers/vdpa/ifc/base/ifcvf.h
+++ b/drivers/vdpa/ifc/base/ifcvf.h
@@ -5,8 +5,17 @@
#ifndef _IFCVF_H_
#define _IFCVF_H_
+#include <linux/virtio_blk.h>
#include "ifcvf_osdep.h"
+#define IFCVF_NET 0
+#define IFCVF_BLK 1
+
+/* for BLK */
+#define IFCVF_BLK_TRANSITIONAL_DEVICE_ID 0x1001
+#define IFCVF_BLK_MODERN_DEVICE_ID 0x1042
+#define IFCVF_BLK_DEVICE_ID 0x0002
+
#define IFCVF_VENDOR_ID 0x1AF4
#define IFCVF_DEVICE_ID 0x1041
#define IFCVF_SUBSYS_VENDOR_ID 0x8086
@@ -57,7 +66,6 @@
#define IFCVF_32_BIT_MASK 0xffffffff
-
struct ifcvf_pci_cap {
u8 cap_vndr; /* Generic PCI field: PCI_CAP_ID_VNDR */
u8 cap_next; /* Generic PCI field: next ptr. */
@@ -126,7 +134,11 @@ struct ifcvf_hw {
u8 notify_region;
u32 notify_off_multiplier;
struct ifcvf_pci_common_cfg *common_cfg;
- struct ifcvf_net_config *dev_cfg;
+ union {
+ struct ifcvf_net_config *net_cfg;
+ struct virtio_blk_config *blk_cfg;
+ void *dev_cfg;
+ };
u8 *isr;
u16 *notify_base;
u16 *notify_addr[IFCVF_MAX_QUEUES * 2];
diff --git a/drivers/vdpa/ifc/ifcvf_vdpa.c b/drivers/vdpa/ifc/ifcvf_vdpa.c
index 3853c4c..96b67dd 100644
--- a/drivers/vdpa/ifc/ifcvf_vdpa.c
+++ b/drivers/vdpa/ifc/ifcvf_vdpa.c
@@ -58,6 +58,7 @@ struct ifcvf_internal {
struct rte_vdpa_device *vdev;
uint16_t max_queues;
uint64_t features;
+ int device_type;
rte_atomic32_t started;
rte_atomic32_t dev_attached;
rte_atomic32_t running;
@@ -75,6 +76,12 @@ struct internal_list {
struct ifcvf_internal *internal;
};
+/* vdpa device info includes device features and devcic operation. */
+struct rte_vdpa_dev_info {
+ uint64_t features;
+ struct rte_vdpa_dev_ops *ops;
+};
+
TAILQ_HEAD(internal_list_head, internal_list);
static struct internal_list_head internal_list =
TAILQ_HEAD_INITIALIZER(internal_list);
@@ -1170,6 +1177,48 @@ struct internal_list {
return 0;
}
+static int16_t
+ifcvf_pci_get_device_type(struct rte_pci_device *pci_dev)
+{
+ uint16_t pci_device_id = pci_dev->id.device_id;
+ uint16_t device_id;
+
+ if (pci_device_id < 0x1000 || pci_device_id > 0x107f) {
+ DRV_LOG(ERR, "Probe device is not a virtio device\n");
+ return -1;
+ }
+
+ if (pci_device_id < 0x1040) {
+ /* Transitional devices: use the PCI subsystem device id as
+ * virtio device id, same as legacy driver always did.
+ */
+ device_id = pci_dev->id.subsystem_device_id;
+ } else {
+ /* Modern devices: simply use PCI device id,
+ * but start from 0x1040.
+ */
+ device_id = pci_device_id - 0x1040;
+ }
+
+ return device_id;
+}
+
+struct rte_vdpa_dev_info dev_info[] = {
+ {
+ .features = (1ULL << VIRTIO_NET_F_GUEST_ANNOUNCE) |
+ (1ULL << VIRTIO_NET_F_CTRL_VQ) |
+ (1ULL << VIRTIO_NET_F_STATUS) |
+ (1ULL << VHOST_USER_F_PROTOCOL_FEATURES) |
+ (1ULL << VHOST_F_LOG_ALL),
+ .ops = &ifcvf_ops,
+ },
+ {
+ .features = (1ULL << VHOST_USER_F_PROTOCOL_FEATURES) |
+ (1ULL << VHOST_F_LOG_ALL),
+ .ops = NULL,
+ },
+};
+
static int
ifcvf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
struct rte_pci_device *pci_dev)
@@ -1181,6 +1230,7 @@ struct internal_list {
int sw_fallback_lm = 0;
struct rte_kvargs *kvlist = NULL;
int ret = 0;
+ int16_t device_id;
if (rte_eal_process_type() != RTE_PROC_PRIMARY)
return 0;
@@ -1230,13 +1280,24 @@ struct internal_list {
internal->configured = 0;
internal->max_queues = IFCVF_MAX_QUEUES;
features = ifcvf_get_features(&internal->hw);
- internal->features = (features &
- ~(1ULL << VIRTIO_F_IOMMU_PLATFORM)) |
- (1ULL << VIRTIO_NET_F_GUEST_ANNOUNCE) |
- (1ULL << VIRTIO_NET_F_CTRL_VQ) |
- (1ULL << VIRTIO_NET_F_STATUS) |
- (1ULL << VHOST_USER_F_PROTOCOL_FEATURES) |
- (1ULL << VHOST_F_LOG_ALL);
+
+ device_id = ifcvf_pci_get_device_type(pci_dev);
+ if (device_id < 0) {
+ DRV_LOG(ERR, "failed to get device %s type", pci_dev->name);
+ goto error;
+ }
+
+ if (device_id == VIRTIO_ID_NET) {
+ internal->device_type = IFCVF_NET;
+ internal->features = features &
+ ~(1ULL << VIRTIO_F_IOMMU_PLATFORM);
+ internal->features |= dev_info[IFCVF_NET].features;
+ } else if (device_id == VIRTIO_ID_BLOCK) {
+ internal->device_type = IFCVF_BLK;
+ internal->features = features &
+ ~(1ULL << VIRTIO_F_IOMMU_PLATFORM);
+ internal->features |= dev_info[IFCVF_BLK].features;
+ }
list->internal = internal;
@@ -1248,7 +1309,8 @@ struct internal_list {
}
internal->sw_lm = sw_fallback_lm;
- internal->vdev = rte_vdpa_register_device(&pci_dev->device, &ifcvf_ops);
+ internal->vdev = rte_vdpa_register_device(&pci_dev->device,
+ dev_info[internal->device_type].ops);
if (internal->vdev == NULL) {
DRV_LOG(ERR, "failed to register device %s", pci_dev->name);
goto error;
@@ -1316,6 +1378,20 @@ struct internal_list {
.subsystem_device_id = IFCVF_SUBSYS_DEVICE_ID,
},
+ { .class_id = RTE_CLASS_ANY_ID,
+ .vendor_id = IFCVF_VENDOR_ID,
+ .device_id = IFCVF_BLK_TRANSITIONAL_DEVICE_ID,
+ .subsystem_vendor_id = IFCVF_SUBSYS_VENDOR_ID,
+ .subsystem_device_id = IFCVF_BLK_DEVICE_ID,
+ },
+
+ { .class_id = RTE_CLASS_ANY_ID,
+ .vendor_id = IFCVF_VENDOR_ID,
+ .device_id = IFCVF_BLK_MODERN_DEVICE_ID,
+ .subsystem_vendor_id = IFCVF_SUBSYS_VENDOR_ID,
+ .subsystem_device_id = IFCVF_BLK_DEVICE_ID,
+ },
+
{ .vendor_id = 0, /* sentinel */
},
};
--
1.8.3.1