Add a function to disable the NVMe controller. This will be used to let the driver for the NVMe storage integrated on Apple SoCs shutdown the NVMe controller such we can shutdown the NVMe IOP controller in a clean way afterwards before handing control to the OS.
Signed-off-by: Mark Kettenis kettenis@openbsd.org Reviewed-by: Simon Glass sjg@chromium.org Tested on: Macbook Air M1 Tested-by: Simon Glass sjg@chromium.org ---
ChangeLog:
v2: - Add comments
drivers/nvme/nvme.c | 7 +++++++ drivers/nvme/nvme.h | 12 ++++++++++++ 2 files changed, 19 insertions(+)
diff --git a/drivers/nvme/nvme.c b/drivers/nvme/nvme.c index e7cbf39c96..1d56517e99 100644 --- a/drivers/nvme/nvme.c +++ b/drivers/nvme/nvme.c @@ -896,3 +896,10 @@ free_queue: free_nvme: return ret; } + +int nvme_shutdown(struct udevice *udev) +{ + struct nvme_dev *ndev = dev_get_priv(udev); + + return nvme_disable_ctrl(ndev); +} diff --git a/drivers/nvme/nvme.h b/drivers/nvme/nvme.h index bc6b79f8dd..bc1d612dde 100644 --- a/drivers/nvme/nvme.h +++ b/drivers/nvme/nvme.h @@ -691,6 +691,18 @@ struct nvme_ops { void (*complete_cmd)(struct nvme_queue *nvmeq, struct nvme_command *cmd); };
+/** + * nvme_init() - Initialize NVM Express device + * @udev: The NVM Express device + * Return: 0 if OK, -ve on error + */ int nvme_init(struct udevice *udev);
+/** + * nvme_shutdown() - Shutdown NVM Express device + * @udev: The NVM Express device + * Return: 0 if OK, -ve on error + */ +int nvme_shutdown(struct udevice *udev); + #endif /* __DRIVER_NVME_H__ */