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vdpa/snet: support the suspend vDPA callback 

When suspend is called, the driver sends a suspend command to the DPU
through the control mechanism.

Signed-off-by: Alvaro Karsz <alvaro.karsz@solid-run.com>
Message-Id: <20230413073337.31367-3-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 2023-04-13 10:33:37 +03:00 committed by Michael S. Tsirkin
parent 3f3a1675b7
commit 3616bf377a
3 changed files with 22 additions and 0 deletions

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

@ -15,6 +15,7 @@
enum snet_ctrl_opcodes {
SNET_CTRL_OP_DESTROY = 1,
SNET_CTRL_OP_READ_VQ_STATE,
SNET_CTRL_OP_SUSPEND,
};
#define SNET_CTRL_TIMEOUT 2000000
@ -322,3 +323,8 @@ int snet_read_vq_state(struct snet *snet, u16 idx, struct vdpa_vq_state *state)
return snet_ctrl_read_from_dpu(snet, SNET_CTRL_OP_READ_VQ_STATE, idx, state,
sizeof(*state));
}
int snet_suspend_dev(struct snet *snet)
{
return snet_send_ctrl_msg(snet, SNET_CTRL_OP_SUSPEND, 0);
}

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

@ -483,6 +483,20 @@ static void snet_set_config(struct vdpa_device *vdev, unsigned int offset,
iowrite8(*buf_ptr++, cfg_ptr + i);
}
static int snet_suspend(struct vdpa_device *vdev)
{
struct snet *snet = vdpa_to_snet(vdev);
int ret;
ret = snet_suspend_dev(snet);
if (ret)
SNET_ERR(snet->pdev, "SNET[%u] suspend failed, err: %d\n", snet->sid, ret);
else
SNET_DBG(snet->pdev, "Suspend 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,
@ -508,6 +522,7 @@ static const struct vdpa_config_ops snet_config_ops = {
.set_status = snet_set_status,
.get_config = snet_get_config,
.set_config = snet_set_config,
.suspend = snet_suspend,
};
static int psnet_open_pf_bar(struct pci_dev *pdev, struct psnet *psnet)

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

@ -203,5 +203,6 @@ void psnet_create_hwmon(struct pci_dev *pdev);
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);
#endif //_SNET_VDPA_H_