vDPA/ifcvf: implement new accessors for vq_state

This commit implements a better layout of the
live migration bar, therefore the accessors for virtqueue
state have been refactored.

This commit also add a comment to the probing-ids list,
indicating this driver drives F2000X-PL virtio-net

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Message-Id: <20230612151420.1019504-4-lingshan.zhu@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/drivers/vdpa/ifcvf/ifcvf_base.c b/drivers/vdpa/ifcvf/ifcvf_base.c
index f4d7d96..060f837 100644 (file)
--- a/drivers/vdpa/ifcvf/ifcvf_base.c
+++ b/drivers/vdpa/ifcvf/ifcvf_base.c
@@ -328,30 +328,19 @@ void ifcvf_set_driver_features(struct ifcvf_hw *hw, u64 features)
 
 u16 ifcvf_get_vq_state(struct ifcvf_hw *hw, u16 qid)
 {
-       struct ifcvf_lm_cfg __iomem *ifcvf_lm;
-       void __iomem *avail_idx_addr;
+       struct ifcvf_lm_cfg  __iomem *lm_cfg = hw->lm_cfg;
        u16 last_avail_idx;
-       u32 q_pair_id;
 
-       ifcvf_lm = (struct ifcvf_lm_cfg __iomem *)hw->lm_cfg;
-       q_pair_id = qid / 2;
-       avail_idx_addr = &ifcvf_lm->vring_lm_cfg[q_pair_id].idx_addr[qid % 2];
-       last_avail_idx = vp_ioread16(avail_idx_addr);
+       last_avail_idx = vp_ioread16(&lm_cfg->vq_state_region + qid * 2);
 
        return last_avail_idx;
 }
 
 int ifcvf_set_vq_state(struct ifcvf_hw *hw, u16 qid, u16 num)
 {
-       struct ifcvf_lm_cfg __iomem *ifcvf_lm;
-       void __iomem *avail_idx_addr;
-       u32 q_pair_id;
-
-       ifcvf_lm = (struct ifcvf_lm_cfg __iomem *)hw->lm_cfg;
-       q_pair_id = qid / 2;
-       avail_idx_addr = &ifcvf_lm->vring_lm_cfg[q_pair_id].idx_addr[qid % 2];
-       hw->vring[qid].last_avail_idx = num;
-       vp_iowrite16(num, avail_idx_addr);
+       struct ifcvf_lm_cfg  __iomem *lm_cfg = hw->lm_cfg;
+
+       vp_iowrite16(num, &lm_cfg->vq_state_region + qid * 2);
 
        return 0;
 }

diff --git a/drivers/vdpa/ifcvf/ifcvf_base.h b/drivers/vdpa/ifcvf/ifcvf_base.h
index 30935a9..b57849c 100644 (file)
--- a/drivers/vdpa/ifcvf/ifcvf_base.h
+++ b/drivers/vdpa/ifcvf/ifcvf_base.h
@@ -24,14 +24,9 @@
 #define N3000_DEVICE_ID                0x1041
 #define N3000_SUBSYS_DEVICE_ID 0x001A
 
-/* Max 8 data queue pairs(16 queues) and one control vq for now. */
-#define IFCVF_MAX_QUEUES       17
-
 #define IFCVF_QUEUE_ALIGNMENT  PAGE_SIZE
 #define IFCVF_PCI_MAX_RESOURCE 6
 
-#define IFCVF_LM_CFG_SIZE              0x40
-#define IFCVF_LM_RING_STATE_OFFSET     0x20
 #define IFCVF_LM_BAR                   4
 
 #define IFCVF_ERR(pdev, fmt, ...)      dev_err(&pdev->dev, fmt, ##__VA_ARGS__)
@@ -54,10 +49,18 @@ struct vring_info {
        char msix_name[256];
 };
 
+struct ifcvf_lm_cfg {
+       __le64 control;
+       __le64 status;
+       __le64 lm_mem_log_start_addr;
+       __le64 lm_mem_log_end_addr;
+       __le16 vq_state_region;
+};
+
 struct ifcvf_hw {
        u8 __iomem *isr;
        /* Live migration */
-       u8 __iomem *lm_cfg;
+       struct ifcvf_lm_cfg  __iomem *lm_cfg;
        /* Notification bar number */
        u8 notify_bar;
        u8 msix_vector_status;
@@ -92,16 +95,6 @@ struct ifcvf_adapter {
        struct ifcvf_hw *vf;
 };
 
-struct ifcvf_vring_lm_cfg {
-       u32 idx_addr[2];
-       u8 reserved[IFCVF_LM_CFG_SIZE - 8];
-};
-
-struct ifcvf_lm_cfg {
-       u8 reserved[IFCVF_LM_RING_STATE_OFFSET];
-       struct ifcvf_vring_lm_cfg vring_lm_cfg[IFCVF_MAX_QUEUES];
-};
-
 struct ifcvf_vdpa_mgmt_dev {
        struct vdpa_mgmt_dev mdev;
        struct ifcvf_hw vf;

diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c
index c3ece39..e98fa81 100644 (file)
--- a/drivers/vdpa/ifcvf/ifcvf_main.c
+++ b/drivers/vdpa/ifcvf/ifcvf_main.c
@@ -853,7 +853,9 @@ static struct pci_device_id ifcvf_pci_ids[] = {
                         N3000_DEVICE_ID,
                         PCI_VENDOR_ID_INTEL,
                         N3000_SUBSYS_DEVICE_ID) },
-       /* C5000X-PL network device */
+       /* C5000X-PL network device
+        * F2000X-PL network device
+        */
        { PCI_DEVICE_SUB(PCI_VENDOR_ID_REDHAT_QUMRANET,
                         VIRTIO_TRANS_ID_NET,
                         PCI_VENDOR_ID_INTEL,