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nvme: add accessor to namespace id and eui64

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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>
This commit is contained in:
Patrick Wildt 2019-10-03 13:48:47 +02:00 • committed by Heinrich Schuchardt
parent 6810caf856
commit c50b2883df
3 changed files with 26 additions and 0 deletions
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13
drivers/nvme/nvme.c
View file

@ -621,6 +621,18 @@ static int nvme_get_info_from_identify(struct nvme_dev *dev)
return 0;
}
int nvme_get_namespace_id(struct udevice *udev, u32 *ns_id, u8 *eui64)
{
struct nvme_ns *ns = dev_get_priv(udev);
if (ns_id)
*ns_id = ns->ns_id;
if (eui64)
memcpy(eui64, ns->eui64, sizeof(ns->eui64));
return 0;
}
int nvme_scan_namespace(void)
{
struct uclass *uc;
@ -657,6 +669,7 @@ static int nvme_blk_probe(struct udevice *udev)
if (nvme_identify(ndev, ns->ns_id, 0, (dma_addr_t)(long)id))
return -EIO;
memcpy(&ns->eui64, &id->eui64, sizeof(id->eui64));
flbas = id->flbas & NVME_NS_FLBAS_LBA_MASK;
ns->flbas = flbas;
ns->lba_shift = id->lbaf[flbas].ds;

1
drivers/nvme/nvme.h
View file

@ -637,6 +637,7 @@ struct nvme_ns {
struct list_head list;
struct nvme_dev *dev;
unsigned ns_id;
u8 eui64[8];
int devnum;
int lba_shift;
u8 flbas;

12
include/nvme.h
View file

@ -78,4 +78,16 @@ int nvme_scan_namespace(void);
*/
int nvme_print_info(struct udevice *udev);
/**
* nvme_get_namespace_id - return namespace identifier
*
* This returns the namespace identifier.
*
* @udev: NVMe controller device
* @ns_id: Place where to put the name space identifier
* @eui64: Place where to put the IEEE Extended Unique Identifier
* @return: 0 on success, -ve on error
*/
int nvme_get_namespace_id(struct udevice *udev, u32 *ns_id, u8 *eui64);
#endif /* __NVME_H__ */