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https://github.com/brain-hackers/u-boot-brain
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c50b2883df
This adds a function which can be used by e.g. EFI to retrieve the namespace identifier and EUI64. For that it adds the EUI64 to its driver internal namespace structure and copies the EUI64 during namespace identification. Signed-off-by: Patrick Wildt <patrick@blueri.se> Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
94 lines
3.1 KiB
C
94 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2017 NXP Semiconductors
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* Copyright (C) 2017 Bin Meng <bmeng.cn@gmail.com>
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*/
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#ifndef __NVME_H__
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#define __NVME_H__
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struct nvme_dev;
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/**
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* nvme_identify - identify controller or namespace capabilities and status
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*
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* This issues an identify command to the NVMe controller to return a data
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* buffer that describes the controller or namespace capabilities and status.
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*
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* @dev: NVMe controller device
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* @nsid: 0 for controller, namespace id for namespace to identify
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* @cns: 1 for controller, 0 for namespace
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* @dma_addr: dma buffer address to store the identify result
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* @return: 0 on success, -ETIMEDOUT on command execution timeout,
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* -EIO on command execution fails
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*/
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int nvme_identify(struct nvme_dev *dev, unsigned nsid,
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unsigned cns, dma_addr_t dma_addr);
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/**
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* nvme_get_features - retrieve the attributes of the feature specified
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*
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* This retrieves the attributes of the feature specified.
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*
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* @dev: NVMe controller device
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* @fid: feature id to provide data
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* @nsid: namespace id the command applies to
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* @dma_addr: data structure used as part of the specified feature
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* @result: command-specific result in the completion queue entry
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* @return: 0 on success, -ETIMEDOUT on command execution timeout,
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* -EIO on command execution fails
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*/
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int nvme_get_features(struct nvme_dev *dev, unsigned fid, unsigned nsid,
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dma_addr_t dma_addr, u32 *result);
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/**
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* nvme_set_features - specify the attributes of the feature indicated
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*
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* This specifies the attributes of the feature indicated.
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*
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* @dev: NVMe controller device
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* @fid: feature id to provide data
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* @dword11: command-specific input parameter
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* @dma_addr: data structure used as part of the specified feature
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* @result: command-specific result in the completion queue entry
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* @return: 0 on success, -ETIMEDOUT on command execution timeout,
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* -EIO on command execution fails
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*/
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int nvme_set_features(struct nvme_dev *dev, unsigned fid, unsigned dword11,
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dma_addr_t dma_addr, u32 *result);
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/**
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* nvme_scan_namespace - scan all namespaces attached to NVMe controllers
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*
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* This probes all registered NVMe uclass device drivers in the system,
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* and tries to find all namespaces attached to the NVMe controllers.
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*
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* @return: 0 on success, -ve on error
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*/
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int nvme_scan_namespace(void);
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/**
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* nvme_print_info - print detailed NVMe controller and namespace information
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*
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* This prints out detailed human readable NVMe controller and namespace
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* information which is very useful for debugging.
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*
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* @udev: NVMe controller device
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* @return: 0 on success, -EIO if NVMe identify command fails
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*/
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int nvme_print_info(struct udevice *udev);
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/**
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* nvme_get_namespace_id - return namespace identifier
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*
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* This returns the namespace identifier.
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*
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* @udev: NVMe controller device
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* @ns_id: Place where to put the name space identifier
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* @eui64: Place where to put the IEEE Extended Unique Identifier
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* @return: 0 on success, -ve on error
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*/
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int nvme_get_namespace_id(struct udevice *udev, u32 *ns_id, u8 *eui64);
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#endif /* __NVME_H__ */
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