More implementations of OCSSDs are becoming available. Adding each using
pci ids are becoming a hassle. Instead, use a 16 byte string in the
vendor-specific area of the identification command to identify an
Open-Channel SSD.
The large string should make the collision probability with other
vendor-specific strings to be near nil.
Signed-off-by: Matias Bjørling <mat...@cnexlabs.com>
---
drivers/nvme/host/lightnvm.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index 4ea9c93..e37b432 100644
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -986,6 +986,9 @@ int nvme_nvm_ns_supported(struct nvme_ns *ns, struct
nvme_id_ns *id)
/* XXX: this is poking into PCI structures from generic code! */
struct pci_dev *pdev = to_pci_dev(ctrl->dev);
+ if (!strncmp((char *)id->vs, "open-channel ssd", 16))
+ return 1;
+
/* QEMU NVMe simulator - PCI ID + Vendor specific bit */
if (pdev->vendor == PCI_VENDOR_ID_CNEX &&
pdev->device == PCI_DEVICE_ID_CNEX_QEMU &&
--
2.9.3
