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vdpa/snet: implement the resume vDPA callback 

The callback sends a resume command to the DPU through
the control mechanism.

Signed-off-by: Alvaro Karsz <alvaro.karsz@solid-run.com>
Message-Id: <20230502131048.61134-1-alvaro.karsz@solid-run.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Alvaro Karsz 2023-05-02 16:10:48 +03:00 committed by Michael S. Tsirkin
parent 47b60ec7ba
commit ef9da01c12
3 changed files with 22 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/vdpa/solidrun/snet_ctrl.c
View File

@ -16,6 +16,7 @@ enum snet_ctrl_opcodes {
SNET_CTRL_OP_DESTROY = 1,
SNET_CTRL_OP_READ_VQ_STATE,
SNET_CTRL_OP_SUSPEND,
SNET_CTRL_OP_RESUME,
};
#define SNET_CTRL_TIMEOUT 2000000
@ -328,3 +329,8 @@ int snet_suspend_dev(struct snet *snet)
{
return snet_send_ctrl_msg(snet, SNET_CTRL_OP_SUSPEND, 0);
}
int snet_resume_dev(struct snet *snet)
{
return snet_send_ctrl_msg(snet, SNET_CTRL_OP_RESUME, 0);
}

15
drivers/vdpa/solidrun/snet_main.c
View File

@ -509,6 +509,20 @@ static int snet_suspend(struct vdpa_device *vdev)
return ret;
}
static int snet_resume(struct vdpa_device *vdev)
{
struct snet *snet = vdpa_to_snet(vdev);
int ret;
ret = snet_resume_dev(snet);
if (ret)
SNET_ERR(snet->pdev, "SNET[%u] resume failed, err: %d\n", snet->sid, ret);
else
SNET_DBG(snet->pdev, "Resume SNET[%u] device\n", snet->sid);
return ret;
}
static const struct vdpa_config_ops snet_config_ops = {
.set_vq_address = snet_set_vq_address,
.set_vq_num = snet_set_vq_num,
@ -536,6 +550,7 @@ static const struct vdpa_config_ops snet_config_ops = {
.get_config = snet_get_config,
.set_config = snet_set_config,
.suspend = snet_suspend,
.resume = snet_resume,
};
static int psnet_open_pf_bar(struct pci_dev *pdev, struct psnet *psnet)

1
drivers/vdpa/solidrun/snet_vdpa.h
View File

@ -204,5 +204,6 @@ void snet_ctrl_clear(struct snet *snet);
int snet_destroy_dev(struct snet *snet);
int snet_read_vq_state(struct snet *snet, u16 idx, struct vdpa_vq_state *state);
int snet_suspend_dev(struct snet *snet);
int snet_resume_dev(struct snet *snet);
#endif //_SNET_VDPA_H_