[PATCH v2 10/12] net/ice: support optional flags in signature segment header

[Soumyadeep Hore <soumyadeep.hore@intel.com>]

An optional flag field has been added to the signature segment
header. The flags field contains two flags, a valid flag, and
a last segment flag that indicates whether the segment is the
last segment that will be downloaded to firmware.

If the flag field's valid bit is NOT set, then as was done
before, assume that this is the last segment being downloaded.

However, if the flag field's valid bit IS set, then use the
last segment flag to determine if this segment is the last
segment to download.

Signed-off-by: Soumyadeep Hore <soumyadeep.hore@intel.com>
---
 drivers/net/ice/base/ice_ddp.c | 13 ++++++++++---
 drivers/net/ice/base/ice_ddp.h |  5 ++++-
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ice/base/ice_ddp.c b/drivers/net/ice/base/ice_ddp.c
index d0c1cb9660..90aaa6b331 100644
--- a/drivers/net/ice/base/ice_ddp.c
+++ b/drivers/net/ice/base/ice_ddp.c
@@ -499,12 +499,13 @@ ice_download_pkg_sig_seg(struct ice_hw *hw, struct ice_sign_seg *seg)
  * @idx: segment index
  * @start: starting buffer
  * @count: buffer count
+ * @last_seg: last segment being downloaded
  *
  * Note: idx must reference a ICE segment
  */
 static enum ice_ddp_state
 ice_download_pkg_config_seg(struct ice_hw *hw, struct ice_pkg_hdr *pkg_hdr,
-			    u32 idx, u32 start, u32 count)
+			    u32 idx, u32 start, u32 count, bool last_seg)
 {
 	struct ice_buf_table *bufs;
 	enum ice_ddp_state state;
@@ -522,7 +523,7 @@ ice_download_pkg_config_seg(struct ice_hw *hw, struct ice_pkg_hdr *pkg_hdr,
 		return ICE_DDP_PKG_ERR;
 
 	state = ice_dwnld_cfg_bufs_no_lock(hw, bufs->buf_array, start, count,
-					   true);
+					   last_seg);
 
 	return state;
 }
@@ -541,9 +542,11 @@ ice_dwnld_sign_and_cfg_segs(struct ice_hw *hw, struct ice_pkg_hdr *pkg_hdr,
 {
 	enum ice_ddp_state state;
 	struct ice_sign_seg *seg;
+	bool last_seg = true;
 	u32 conf_idx;
 	u32 start;
 	u32 count;
+	u32 flags;
 
 	seg = (struct ice_sign_seg *)ice_get_pkg_seg_by_idx(pkg_hdr, idx);
 	if (!seg) {
@@ -554,6 +557,10 @@ ice_dwnld_sign_and_cfg_segs(struct ice_hw *hw, struct ice_pkg_hdr *pkg_hdr,
 	conf_idx = LE32_TO_CPU(seg->signed_seg_idx);
 	start = LE32_TO_CPU(seg->signed_buf_start);
 	count = LE32_TO_CPU(seg->signed_buf_count);
+	flags = LE32_TO_CPU(seg->flags);
+
+	if (flags & ICE_SIGN_SEG_FLAGS_VALID)
+		last_seg = !!(flags & ICE_SIGN_SEG_FLAGS_LAST);
 
 	state = ice_download_pkg_sig_seg(hw, seg);
 	if (state)
@@ -568,7 +575,7 @@ ice_dwnld_sign_and_cfg_segs(struct ice_hw *hw, struct ice_pkg_hdr *pkg_hdr,
 	}
 
 	state = ice_download_pkg_config_seg(hw, pkg_hdr, conf_idx, start,
-					    count);
+					    count, last_seg);
 
 exit:
 	return state;
diff --git a/drivers/net/ice/base/ice_ddp.h b/drivers/net/ice/base/ice_ddp.h
index 5761920207..5512669f44 100644
--- a/drivers/net/ice/base/ice_ddp.h
+++ b/drivers/net/ice/base/ice_ddp.h
@@ -177,7 +177,10 @@ struct ice_sign_seg {
 	__le32 signed_seg_idx;
 	__le32 signed_buf_start;
 	__le32 signed_buf_count;
-#define ICE_SIGN_SEG_RESERVED_COUNT	44
+#define ICE_SIGN_SEG_FLAGS_VALID	0x80000000
+#define ICE_SIGN_SEG_FLAGS_LAST		0x00000001
+	__le32 flags;
+#define ICE_SIGN_SEG_RESERVED_COUNT	40
 	u8 reserved[ICE_SIGN_SEG_RESERVED_COUNT];
 	struct ice_buf_table buf_tbl;
 };
-- 
2.43.0