diff options
| author | Alvaro Karsz <alvaro.karsz@solid-run.com> | 2023-04-13 10:33:37 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-04-21 03:02:34 -0400 |
| commit | 3616bf377a5a8ef4f124dfde5f3522c4da335561 (patch) | |
| tree | 4a2238e232b5bf36dbba7c0b634519a13755acf9 /drivers/vdpa | |
| parent | 3f3a1675b731e532d479e65570f2904878fbd9f0 (diff) | |
| download | linux-3616bf377a5a8ef4f124dfde5f3522c4da335561.tar.gz | |
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>
Diffstat (limited to 'drivers/vdpa')
| -rw-r--r-- | drivers/vdpa/solidrun/snet_ctrl.c | 6 | ||||
| -rw-r--r-- | drivers/vdpa/solidrun/snet_main.c | 15 | ||||
| -rw-r--r-- | drivers/vdpa/solidrun/snet_vdpa.h | 1 |
3 files changed, 22 insertions, 0 deletions
diff --git a/drivers/vdpa/solidrun/snet_ctrl.c b/drivers/vdpa/solidrun/snet_ctrl.c index 10cde502f1a9f4..3858738643b407 100644 --- a/drivers/vdpa/solidrun/snet_ctrl.c +++ b/drivers/vdpa/solidrun/snet_ctrl.c @@ -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); +} diff --git a/drivers/vdpa/solidrun/snet_main.c b/drivers/vdpa/solidrun/snet_main.c index 86769f436b4d52..7359599e09e4cc 100644 --- a/drivers/vdpa/solidrun/snet_main.c +++ b/drivers/vdpa/solidrun/snet_main.c @@ -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) diff --git a/drivers/vdpa/solidrun/snet_vdpa.h b/drivers/vdpa/solidrun/snet_vdpa.h index 09ff676e7a2d80..3c78d4e7d48570 100644 --- a/drivers/vdpa/solidrun/snet_vdpa.h +++ b/drivers/vdpa/solidrun/snet_vdpa.h @@ -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_ |