ice: Add support for E830 DDP package segment

Add support for E830 DDP package segment. For the E830 package,
signature buffers will not be included inline in the configuration
buffers. Instead, the signature buffers will be located in a
signature segment.
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Dan Nowlin <dan.nowlin@intel.com>
Co-developed-by: Paul Greenwalt <paul.greenwalt@intel.com>
Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Tony Brelinski <tony.brelinski@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20231025214157.1222758-5-jacob.e.keller@intel.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/intel/ice/ice_ddp.c

@@ -1201,23 +1201,120 @@ ice_aq_download_pkg(struct ice_hw *hw, struct ice_buf_hdr *pkg_buf,
 }
 
 /**
- * ice_dwnld_cfg_bufs
+ * ice_get_pkg_seg_by_idx
+ * @pkg_hdr: pointer to the package header to be searched
+ * @idx: index of segment
+ */
+static struct ice_generic_seg_hdr *
+ice_get_pkg_seg_by_idx(struct ice_pkg_hdr *pkg_hdr, u32 idx)
+{
+	if (idx < le32_to_cpu(pkg_hdr->seg_count))
+		return (struct ice_generic_seg_hdr *)
+			((u8 *)pkg_hdr +
+			 le32_to_cpu(pkg_hdr->seg_offset[idx]));
+
+	return NULL;
+}
+
+/**
+ * ice_is_signing_seg_at_idx - determine if segment is a signing segment
+ * @pkg_hdr: pointer to package header
+ * @idx: segment index
+ */
+static bool ice_is_signing_seg_at_idx(struct ice_pkg_hdr *pkg_hdr, u32 idx)
+{
+	struct ice_generic_seg_hdr *seg;
+
+	seg = ice_get_pkg_seg_by_idx(pkg_hdr, idx);
+	if (!seg)
+		return false;
+
+	return le32_to_cpu(seg->seg_type) == SEGMENT_TYPE_SIGNING;
+}
+
+/**
+ * ice_is_signing_seg_type_at_idx
+ * @pkg_hdr: pointer to package header
+ * @idx: segment index
+ * @seg_id: segment id that is expected
+ * @sign_type: signing type
+ *
+ * Determine if a segment is a signing segment of the correct type
+ */
+static bool
+ice_is_signing_seg_type_at_idx(struct ice_pkg_hdr *pkg_hdr, u32 idx,
+			       u32 seg_id, u32 sign_type)
+{
+	struct ice_sign_seg *seg;
+
+	if (!ice_is_signing_seg_at_idx(pkg_hdr, idx))
+		return false;
+
+	seg = (struct ice_sign_seg *)ice_get_pkg_seg_by_idx(pkg_hdr, idx);
+
+	if (seg && le32_to_cpu(seg->seg_id) == seg_id &&
+	    le32_to_cpu(seg->sign_type) == sign_type)
+		return true;
+
+	return false;
+}
+
+/**
+ * ice_is_buffer_metadata - determine if package buffer is a metadata buffer
+ * @buf: pointer to buffer header
+ */
+static bool ice_is_buffer_metadata(struct ice_buf_hdr *buf)
+{
+	if (le32_to_cpu(buf->section_entry[0].type) & ICE_METADATA_BUF)
+		return true;
+
+	return false;
+}
+
+/**
+ * ice_is_last_download_buffer
+ * @buf: pointer to current buffer header
+ * @idx: index of the buffer in the current sequence
+ * @count: the buffer count in the current sequence
+ *
+ * Note: this routine should only be called if the buffer is not the last buffer
+ */
+static bool
+ice_is_last_download_buffer(struct ice_buf_hdr *buf, u32 idx, u32 count)
+{
+	struct ice_buf *next_buf;
+
+	if ((idx + 1) == count)
+		return true;
+
+	/* A set metadata flag in the next buffer will signal that the current
+	 * buffer will be the last buffer downloaded
+	 */
+	next_buf = ((struct ice_buf *)buf) + 1;
+
+	return ice_is_buffer_metadata((struct ice_buf_hdr *)next_buf);
+}
+
+/**
+ * ice_dwnld_cfg_bufs_no_lock
  * @hw: pointer to the hardware structure
  * @bufs: pointer to an array of buffers
- * @count: the number of buffers in the array
+ * @start: buffer index of first buffer to download
+ * @count: the number of buffers to download
+ * @indicate_last: if true, then set last buffer flag on last buffer download
  *
- * Obtains global config lock and downloads the package configuration buffers
- * to the firmware. Metadata buffers are skipped, and the first metadata buffer
- * found indicates that the rest of the buffers are all metadata buffers.
+ * Downloads package configuration buffers to the firmware. Metadata buffers
+ * are skipped, and the first metadata buffer found indicates that the rest
+ * of the buffers are all metadata buffers.
  */
-static enum ice_ddp_state ice_dwnld_cfg_bufs(struct ice_hw *hw,
-					     struct ice_buf *bufs, u32 count)
+static enum ice_ddp_state
+ice_dwnld_cfg_bufs_no_lock(struct ice_hw *hw, struct ice_buf *bufs, u32 start,
+			   u32 count, bool indicate_last)
 {
 	enum ice_ddp_state state = ICE_DDP_PKG_SUCCESS;
 	struct ice_buf_hdr *bh;
 	enum ice_aq_err err;
 	u32 offset, info, i;
-	int status;
 
 	if (!bufs || !count)
 		return ICE_DDP_PKG_ERR;
@@ -1226,43 +1323,25 @@ static enum ice_ddp_state ice_dwnld_cfg_bufs(struct ice_hw *hw,
 	 * then there are no buffers to be downloaded, and the operation is
 	 * considered a success.
 	 */
-	bh = (struct ice_buf_hdr *)bufs;
+	bh = (struct ice_buf_hdr *)(bufs + start);
 	if (le32_to_cpu(bh->section_entry[0].type) & ICE_METADATA_BUF)
 		return ICE_DDP_PKG_SUCCESS;
 
-	status = ice_acquire_global_cfg_lock(hw, ICE_RES_WRITE);
-	if (status) {
-		if (status == -EALREADY)
-			return ICE_DDP_PKG_ALREADY_LOADED;
-		return ice_map_aq_err_to_ddp_state(hw->adminq.sq_last_status);
-	}
-
 	for (i = 0; i < count; i++) {
-		bool last = ((i + 1) == count);
-
-		if (!last) {
-			/* check next buffer for metadata flag */
-			bh = (struct ice_buf_hdr *)(bufs + i + 1);
+		bool last = false;
+		int status;
 
-			/* A set metadata flag in the next buffer will signal
-			 * that the current buffer will be the last buffer
-			 * downloaded
-			 */
-			if (le16_to_cpu(bh->section_count))
-				if (le32_to_cpu(bh->section_entry[0].type) &
-				    ICE_METADATA_BUF)
-					last = true;
-		}
+		bh = (struct ice_buf_hdr *)(bufs + start + i);
 
-		bh = (struct ice_buf_hdr *)(bufs + i);
+		if (indicate_last)
+			last = ice_is_last_download_buffer(bh, i, count);
 
 		status = ice_aq_download_pkg(hw, bh, ICE_PKG_BUF_SIZE, last,
 					     &offset, &info, NULL);
 
 		/* Save AQ status from download package */
 		if (status) {
-			ice_debug(hw, ICE_DBG_PKG,
-				  "Pkg download failed: err %d off %d inf %d\n",
+			ice_debug(hw, ICE_DBG_PKG, "Pkg download failed: err %d off %d inf %d\n",
 				  status, offset, info);
 			err = hw->adminq.sq_last_status;
 			state = ice_map_aq_err_to_ddp_state(err);
@@ -1273,72 +1352,196 @@ static enum ice_ddp_state ice_dwnld_cfg_bufs(struct ice_hw *hw,
 			break;
 	}
 
-	if (!status) {
-		status = ice_set_vlan_mode(hw);
-		if (status)
-			ice_debug(hw, ICE_DBG_PKG,
-				  "Failed to set VLAN mode: err %d\n", status);
+	return state;
+}
+
+/**
+ * ice_download_pkg_sig_seg - download a signature segment
+ * @hw: pointer to the hardware structure
+ * @seg: pointer to signature segment
+ */
+static enum ice_ddp_state
+ice_download_pkg_sig_seg(struct ice_hw *hw, struct ice_sign_seg *seg)
+{
+	return  ice_dwnld_cfg_bufs_no_lock(hw, seg->buf_tbl.buf_array, 0,
+					   le32_to_cpu(seg->buf_tbl.buf_count),
+					   false);
+}
+
+/**
+ * ice_download_pkg_config_seg - download a config segment
+ * @hw: pointer to the hardware structure
+ * @pkg_hdr: pointer to package header
+ * @idx: segment index
+ * @start: starting buffer
+ * @count: buffer count
+ *
+ * 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)
+{
+	struct ice_buf_table *bufs;
+	struct ice_seg *seg;
+	u32 buf_count;
+
+	seg = (struct ice_seg *)ice_get_pkg_seg_by_idx(pkg_hdr, idx);
+	if (!seg)
+		return ICE_DDP_PKG_ERR;
+
+	bufs = ice_find_buf_table(seg);
+	buf_count = le32_to_cpu(bufs->buf_count);
+
+	if (start >= buf_count || start + count > buf_count)
+		return ICE_DDP_PKG_ERR;
+
+	return  ice_dwnld_cfg_bufs_no_lock(hw, bufs->buf_array, start, count,
+					   true);
+}
+
+/**
+ * ice_dwnld_sign_and_cfg_segs - download a signing segment and config segment
+ * @hw: pointer to the hardware structure
+ * @pkg_hdr: pointer to package header
+ * @idx: segment index (must be a signature segment)
+ *
+ * Note: idx must reference a signature segment
+ */
+static enum ice_ddp_state
+ice_dwnld_sign_and_cfg_segs(struct ice_hw *hw, struct ice_pkg_hdr *pkg_hdr,
+			    u32 idx)
+{
+	enum ice_ddp_state state;
+	struct ice_sign_seg *seg;
+	u32 conf_idx;
+	u32 start;
+	u32 count;
+
+	seg = (struct ice_sign_seg *)ice_get_pkg_seg_by_idx(pkg_hdr, idx);
+	if (!seg) {
+		state = ICE_DDP_PKG_ERR;
+		goto exit;
 	}
 
-	ice_release_global_cfg_lock(hw);
+	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);
 
+	state = ice_download_pkg_sig_seg(hw, seg);
+	if (state)
+		goto exit;
+
+	state = ice_download_pkg_config_seg(hw, pkg_hdr, conf_idx, start,
+					    count);
+
+exit:
 	return state;
 }
 
 /**
- * ice_aq_get_pkg_info_list
+ * ice_match_signing_seg - determine if a matching signing segment exists
+ * @pkg_hdr: pointer to package header
+ * @seg_id: segment id that is expected
+ * @sign_type: signing type
+ */
+static bool
+ice_match_signing_seg(struct ice_pkg_hdr *pkg_hdr, u32 seg_id, u32 sign_type)
+{
+	u32 i;
+
+	for (i = 0; i < le32_to_cpu(pkg_hdr->seg_count); i++) {
+		if (ice_is_signing_seg_type_at_idx(pkg_hdr, i, seg_id,
+						   sign_type))
+			return true;
+	}
+
+	return false;
+}
+
+/**
+ * ice_post_dwnld_pkg_actions - perform post download package actions
  * @hw: pointer to the hardware structure
- * @pkg_info: the buffer which will receive the information list
- * @buf_size: the size of the pkg_info information buffer
- * @cd: pointer to command details structure or NULL
- *
- * Get Package Info List (0x0C43)
  */
-static int ice_aq_get_pkg_info_list(struct ice_hw *hw,
-				    struct ice_aqc_get_pkg_info_resp *pkg_info,
-				    u16 buf_size, struct ice_sq_cd *cd)
+static enum ice_ddp_state
+ice_post_dwnld_pkg_actions(struct ice_hw *hw)
 {
-	struct ice_aq_desc desc;
+	int status;
 
-	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_pkg_info_list);
+	status = ice_set_vlan_mode(hw);
+	if (status) {
+		ice_debug(hw, ICE_DBG_PKG, "Failed to set VLAN mode: err %d\n",
+			  status);
+		return ICE_DDP_PKG_ERR;
+	}
 
-	return ice_aq_send_cmd(hw, &desc, pkg_info, buf_size, cd);
+	return ICE_DDP_PKG_SUCCESS;
 }
 
 /**
  * ice_download_pkg
  * @hw: pointer to the hardware structure
- * @ice_seg: pointer to the segment of the package to be downloaded
+ * @pkg_hdr: pointer to package header
  *
  * Handles the download of a complete package.
  */
-static enum ice_ddp_state ice_download_pkg(struct ice_hw *hw,
-					   struct ice_seg *ice_seg)
+static enum ice_ddp_state
+ice_download_pkg(struct ice_hw *hw, struct ice_pkg_hdr *pkg_hdr)
 {
-	struct ice_buf_table *ice_buf_tbl;
+	enum ice_aq_err aq_err = hw->adminq.sq_last_status;
+	enum ice_ddp_state state = ICE_DDP_PKG_ERR;
 	int status;
+	u32 i;
 
-	ice_debug(hw, ICE_DBG_PKG, "Segment format version: %d.%d.%d.%d\n",
-		  ice_seg->hdr.seg_format_ver.major,
-		  ice_seg->hdr.seg_format_ver.minor,
-		  ice_seg->hdr.seg_format_ver.update,
-		  ice_seg->hdr.seg_format_ver.draft);
+	ice_debug(hw, ICE_DBG_INIT, "Segment ID %d\n", hw->pkg_seg_id);
+	ice_debug(hw, ICE_DBG_INIT, "Signature type %d\n", hw->pkg_sign_type);
 
-	ice_debug(hw, ICE_DBG_PKG, "Seg: type 0x%X, size %d, name %s\n",
-		  le32_to_cpu(ice_seg->hdr.seg_type),
-		  le32_to_cpu(ice_seg->hdr.seg_size), ice_seg->hdr.seg_id);
+	status = ice_acquire_global_cfg_lock(hw, ICE_RES_WRITE);
+	if (status) {
+		if (status == -EALREADY)
+			state = ICE_DDP_PKG_ALREADY_LOADED;
+		else
+			state = ice_map_aq_err_to_ddp_state(aq_err);
+		return state;
+	}
 
-	ice_buf_tbl = ice_find_buf_table(ice_seg);
+	for (i = 0; i < le32_to_cpu(pkg_hdr->seg_count); i++) {
+		if (!ice_is_signing_seg_type_at_idx(pkg_hdr, i, hw->pkg_seg_id,
+						    hw->pkg_sign_type))
+			continue;
 
-	ice_debug(hw, ICE_DBG_PKG, "Seg buf count: %d\n",
-		  le32_to_cpu(ice_buf_tbl->buf_count));
+		state = ice_dwnld_sign_and_cfg_segs(hw, pkg_hdr, i);
+		if (state)
+			break;
+	}
 
-	status = ice_dwnld_cfg_bufs(hw, ice_buf_tbl->buf_array,
-				    le32_to_cpu(ice_buf_tbl->buf_count));
+	if (!state)
+		state = ice_post_dwnld_pkg_actions(hw);
 
+	ice_release_global_cfg_lock(hw);
 	ice_post_pkg_dwnld_vlan_mode_cfg(hw);
 
-	return status;
+	return state;
+}
+
+/**
+ * ice_aq_get_pkg_info_list
+ * @hw: pointer to the hardware structure
+ * @pkg_info: the buffer which will receive the information list
+ * @buf_size: the size of the pkg_info information buffer
+ * @cd: pointer to command details structure or NULL
+ *
+ * Get Package Info List (0x0C43)
+ */
+static int ice_aq_get_pkg_info_list(struct ice_hw *hw,
+				    struct ice_aqc_get_pkg_info_resp *pkg_info,
+				    u16 buf_size, struct ice_sq_cd *cd)
+{
+	struct ice_aq_desc desc;
+
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_pkg_info_list);
+
+	return ice_aq_send_cmd(hw, &desc, pkg_info, buf_size, cd);
 }
 
 /**
@@ -1497,6 +1700,73 @@ ice_find_seg_in_pkg(struct ice_hw *hw, u32 seg_type,
 	return NULL;
 }
 
+/**
+ * ice_has_signing_seg - determine if package has a signing segment
+ * @hw: pointer to the hardware structure
+ * @pkg_hdr: pointer to the driver's package hdr
+ */
+static bool ice_has_signing_seg(struct ice_hw *hw, struct ice_pkg_hdr *pkg_hdr)
+{
+	struct ice_generic_seg_hdr *seg_hdr;
+
+	seg_hdr = (struct ice_generic_seg_hdr *)
+		ice_find_seg_in_pkg(hw, SEGMENT_TYPE_SIGNING, pkg_hdr);
+
+	return seg_hdr ? true : false;
+}
+
+/**
+ * ice_get_pkg_segment_id - get correct package segment id, based on device
+ * @mac_type: MAC type of the device
+ */
+static u32 ice_get_pkg_segment_id(enum ice_mac_type mac_type)
+{
+	u32 seg_id;
+
+	switch (mac_type) {
+	case ICE_MAC_E830:
+		seg_id = SEGMENT_TYPE_ICE_E830;
+		break;
+	case ICE_MAC_GENERIC:
+	default:
+		seg_id = SEGMENT_TYPE_ICE_E810;
+		break;
+	}
+
+	return seg_id;
+}
+
+/**
+ * ice_get_pkg_sign_type - get package segment sign type, based on device
+ * @mac_type: MAC type of the device
+ */
+static u32 ice_get_pkg_sign_type(enum ice_mac_type mac_type)
+{
+	u32 sign_type;
+
+	switch (mac_type) {
+	case ICE_MAC_E830:
+		sign_type = SEGMENT_SIGN_TYPE_RSA3K_SBB;
+		break;
+	case ICE_MAC_GENERIC:
+	default:
+		sign_type = SEGMENT_SIGN_TYPE_RSA2K;
+		break;
+	}
+
+	return sign_type;
+}
+
+/**
+ * ice_get_signing_req - get correct package requirements, based on device
+ * @hw: pointer to the hardware structure
+ */
+static void ice_get_signing_req(struct ice_hw *hw)
+{
+	hw->pkg_seg_id = ice_get_pkg_segment_id(hw->mac_type);
+	hw->pkg_sign_type = ice_get_pkg_sign_type(hw->mac_type);
+}
+
 /**
  * ice_init_pkg_info
  * @hw: pointer to the hardware structure
@@ -1512,7 +1782,14 @@ static enum ice_ddp_state ice_init_pkg_info(struct ice_hw *hw,
 	if (!pkg_hdr)
 		return ICE_DDP_PKG_ERR;
 
-	seg_hdr = ice_find_seg_in_pkg(hw, SEGMENT_TYPE_ICE, pkg_hdr);
+	hw->pkg_has_signing_seg = ice_has_signing_seg(hw, pkg_hdr);
+	ice_get_signing_req(hw);
+
+	ice_debug(hw, ICE_DBG_INIT, "Pkg using segment id: 0x%08X\n",
+		  hw->pkg_seg_id);
+
+	seg_hdr = (struct ice_generic_seg_hdr *)
+		ice_find_seg_in_pkg(hw, hw->pkg_seg_id, pkg_hdr);
 	if (seg_hdr) {
 		struct ice_meta_sect *meta;
 		struct ice_pkg_enum state;
@@ -1626,7 +1903,7 @@ static enum ice_ddp_state ice_chk_pkg_compat(struct ice_hw *hw,
 	}
 
 	/* find ICE segment in given package */
-	*seg = (struct ice_seg *)ice_find_seg_in_pkg(hw, SEGMENT_TYPE_ICE,
+	*seg = (struct ice_seg *)ice_find_seg_in_pkg(hw, hw->pkg_seg_id,
 						     ospkg);
 	if (!*seg) {
 		ice_debug(hw, ICE_DBG_INIT, "no ice segment in package.\n");
@@ -1792,6 +2069,11 @@ enum ice_ddp_state ice_init_pkg(struct ice_hw *hw, u8 *buf, u32 len)
 	if (state)
 		return state;
 
+	/* must be a matching segment */
+	if (hw->pkg_has_signing_seg &&
+	    !ice_match_signing_seg(pkg, hw->pkg_seg_id, hw->pkg_sign_type))
+		return ICE_DDP_PKG_ERR;
+
 	/* before downloading the package, check package version for
 	 * compatibility with driver
 	 */
@@ -1801,7 +2083,7 @@ enum ice_ddp_state ice_init_pkg(struct ice_hw *hw, u8 *buf, u32 len)
 
 	/* initialize package hints and then download package */
 	ice_init_pkg_hints(hw, seg);
-	state = ice_download_pkg(hw, seg);
+	state = ice_download_pkg(hw, pkg);
 	if (state == ICE_DDP_PKG_ALREADY_LOADED) {
 		ice_debug(hw, ICE_DBG_INIT,
 			  "package previously loaded - no work.\n");

drivers/net/ethernet/intel/ice/ice_ddp.h

@@ -98,10 +98,21 @@ struct ice_pkg_hdr {
 	__le32 seg_offset[];
 };
 
+/* Package signing algorithm types */
+#define SEGMENT_SIGN_TYPE_INVALID	0x00000000
+#define SEGMENT_SIGN_TYPE_RSA2K		0x00000001
+#define SEGMENT_SIGN_TYPE_RSA3K		0x00000002
+#define SEGMENT_SIGN_TYPE_RSA3K_SBB	0x00000003 /* Secure Boot Block */
+#define SEGMENT_SIGN_TYPE_RSA3K_E825	0x00000005
+
 /* generic segment */
 struct ice_generic_seg_hdr {
+#define SEGMENT_TYPE_INVALID	0x00000000
 #define SEGMENT_TYPE_METADATA	0x00000001
-#define SEGMENT_TYPE_ICE 0x00000010
+#define SEGMENT_TYPE_ICE_E810	0x00000010
+#define SEGMENT_TYPE_SIGNING	0x00001001
+#define SEGMENT_TYPE_ICE_RUN_TIME_CFG 0x00000020
+#define SEGMENT_TYPE_ICE_E830	0x00000017
 	__le32 seg_type;
 	struct ice_pkg_ver seg_format_ver;
 	__le32 seg_size;
@@ -163,6 +174,18 @@ struct ice_global_metadata_seg {
 #define ICE_MIN_S_SZ 1
 #define ICE_MAX_S_SZ 4084
 
+struct ice_sign_seg {
+	struct ice_generic_seg_hdr hdr;
+	__le32 seg_id;
+	__le32 sign_type;
+	__le32 signed_seg_idx;
+	__le32 signed_buf_start;
+	__le32 signed_buf_count;
+#define ICE_SIGN_SEG_RESERVED_COUNT	44
+	u8 reserved[ICE_SIGN_SEG_RESERVED_COUNT];
+	struct ice_buf_table buf_tbl;
+};
+
 /* section information */
 struct ice_section_entry {
 	__le32 type;

drivers/net/ethernet/intel/ice/ice_type.h

@@ -920,7 +920,10 @@ struct ice_hw {
 
 	/* Active package version (currently active) */
 	struct ice_pkg_ver active_pkg_ver;
+	u32 pkg_seg_id;
+	u32 pkg_sign_type;
 	u32 active_track_id;
+	u8 pkg_has_signing_seg:1;
 	u8 active_pkg_name[ICE_PKG_NAME_SIZE];
 	u8 active_pkg_in_nvm;