ice: track interrupt vectors with xarray

Replace custom interrupt tracker with generic xarray data structure.
Remove all code responsible for searching for a new entry with xa_alloc,
which always tries to allocate at the lowes possible index. As a result
driver is always using a contiguous region of the MSIX vector table.

New tracker keeps ice_irq_entry entries in xarray as opaque for the rest
of the driver hiding the entry details from the caller.

Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Piotr Raczynski <piotr.raczynski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 0 insertions, 45 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index fe908cf6da6a..387bb9cbafbe 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -1371,51 +1371,6 @@ out:
 }
 
 /**
- * ice_free_res - free a block of resources
- * @res: pointer to the resource
- * @index: starting index previously returned by ice_get_res
- *
- * Returns number of resources freed
- */
-int ice_free_res(struct ice_res_tracker *res, u16 index)
-{
-	if (!res || index >= res->end)
-		return -EINVAL;
-
-	res->list[index] = 0;
-
-	return 0;
-}
-
-/**
- * ice_get_res - get a resource from the tracker
- * @pf: board private structure
- * @res: pointer to the resource
- *
- * Returns the item index, or negative for error
- */
-int
-ice_get_res(struct ice_pf *pf, struct ice_res_tracker *res)
-{
-	u16 i;
-
-	if (!res || !pf)
-		return -EINVAL;
-
-	/* skip already allocated entries */
-	for (i = 0; i < res->end; i++)
-		if (!(res->list[i] & ICE_RES_VALID_BIT))
-			break;
-
-	if (i < res->end) {
-		res->list[i] = ICE_RES_VALID_BIT;
-		return i;
-	} else {
-		return -ENOMEM;
-	}
-}
-
-/**
  * ice_vsi_clear_rings - Deallocates the Tx and Rx rings for VSI
  * @vsi: the VSI having rings deallocated
  */