IMSM: Add support for VMD

The Intel Volume Management Device (VMD) is an integrated
endpoint on the platform's PCIe root complex that acts
as a host bridge to a secondary PCIe domain.

This patch adds proper handling of NVMe devices attached to VMD domain.
Each VMD domain is treated as a separate controller (HBA).
Spanning between domains is forbidden.

Signed-off-by: Pawel Baldysiak <pawel.baldysiak@intel.com>
Signed-off-by: NeilBrown <neilb@suse.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/platform-intel.h b/platform-intel.h
index 695d6c66..a8ae85f4 100644
--- a/platform-intel.h
+++ b/platform-intel.h
@@ -189,6 +189,7 @@ enum sys_dev_type {
 	SYS_DEV_SAS,
 	SYS_DEV_SATA,
 	SYS_DEV_NVME,
+	SYS_DEV_VMD,
 	SYS_DEV_MAX
 };
 
@@ -213,6 +214,7 @@ struct devid_list {
 struct orom_entry {
 	struct imsm_orom orom;
 	struct devid_list *devid_list;
+	enum sys_dev_type type;
 	struct orom_entry *next;
 };
 
@@ -229,6 +231,7 @@ static inline char *guid_str(char *buf, struct efi_guid guid)
 }
 
 char *diskfd_to_devpath(int fd);
+__u16 devpath_to_vendor(const char *dev_path);
 struct sys_dev *find_driver_devices(const char *bus, const char *driver);
 struct sys_dev *find_intel_devices(void);
 const struct imsm_orom *find_imsm_capability(struct sys_dev *hba);
@@ -241,3 +244,4 @@ const char *get_sys_dev_type(enum sys_dev_type);
 const struct orom_entry *get_orom_entry_by_device_id(__u16 dev_id);
 const struct imsm_orom *get_orom_by_device_id(__u16 device_id);
 struct sys_dev *device_by_id(__u16 device_id);
+char *vmd_domain_to_controller(struct sys_dev *hba, char *buf);