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uio: dfl: add vendor-specific feature id 

Add a Device Feature List (DFL) feature id as a generic mechanism
to expose a vendor-specific FPGA IP to user space. The feature id
is intended for use with IPs that do not need any kernel services
beyond exposure to user space through the UIO DFL driver.

The feature id is used in, e.g., Intel Oak Springs Canyon IPUs
to expose various IPs to user space, e.g., Network Controller
Sideband Interface (NC-SI), BaseNIC, and VirtIO management.

Link: https://github.com/OPAE/dfl-feature-id
Signed-off-by: Peter Colberg <peter.colberg@intel.com>
Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Reviewed-by: Russ Weight <russell.h.weight@intel.com>
Link: https://lore.kernel.org/r/20230531030737.12989-1-peter.colberg@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Colberg 2023-05-30 23:07:37 -04:00 committed by Greg Kroah-Hartman
parent 282c22a8bb
commit c9d9d11b85
1 changed files with 2 additions and 0 deletions
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2
drivers/uio/uio_dfl.c
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@ -46,11 +46,13 @@ static int uio_dfl_probe(struct dfl_device *ddev)
#define FME_FEATURE_ID_ETH_GROUP 0x10 #define FME_FEATURE_ID_ETH_GROUP 0x10
#define FME_FEATURE_ID_HSSI_SUBSYS 0x15 #define FME_FEATURE_ID_HSSI_SUBSYS 0x15
#define FME_FEATURE_ID_VENDOR_SPECIFIC 0x23
#define PORT_FEATURE_ID_IOPLL_USRCLK 0x14 #define PORT_FEATURE_ID_IOPLL_USRCLK 0x14
static const struct dfl_device_id uio_dfl_ids[] = { static const struct dfl_device_id uio_dfl_ids[] = {
{ FME_ID, FME_FEATURE_ID_ETH_GROUP }, { FME_ID, FME_FEATURE_ID_ETH_GROUP },
{ FME_ID, FME_FEATURE_ID_HSSI_SUBSYS }, { FME_ID, FME_FEATURE_ID_HSSI_SUBSYS },
{ FME_ID, FME_FEATURE_ID_VENDOR_SPECIFIC },
{ PORT_ID, PORT_FEATURE_ID_IOPLL_USRCLK }, { PORT_ID, PORT_FEATURE_ID_IOPLL_USRCLK },
{ } { }
}; };