qed*: Utilize Firmware 8.15.3.0

This patch advances the qed* drivers into using the newer firmware -
This solves several firmware bugs, mostly related [but not limited to]
various init/deinit issues in various offloaded protocols.

It also introduces a major 4-Cached SGE change in firmware, which can be
seen in the storage drivers' changes.

In addition, this firmware is required for supporting the new QL41xxx
series of adapters; While this patch doesn't add the actual support,
the firmware contains the necessary initialization & firmware logic to
operate such adapters [actual support would be added later on].

Changes from Previous versions:
-------------------------------
 - V2 - fix kbuild-test robot warnings

Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com>
Signed-off-by: Manish Rangankar <Manish.Rangankar@cavium.com>
Signed-off-by: Chad Dupuis <Chad.Dupuis@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 85 insertions, 0 deletions

diff --git a/drivers/scsi/qedf/drv_scsi_fw_funcs.h b/drivers/scsi/qedf/drv_scsi_fw_funcs.h
new file mode 100644
index 000000000000..9cb45410bc45
--- /dev/null
+++ b/drivers/scsi/qedf/drv_scsi_fw_funcs.h
@@ -0,0 +1,85 @@
+/* QLogic FCoE Offload Driver
+ * Copyright (c) 2016 Cavium Inc.
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+#ifndef _SCSI_FW_FUNCS_H
+#define _SCSI_FW_FUNCS_H
+#include <linux/qed/common_hsi.h>
+#include <linux/qed/storage_common.h>
+#include <linux/qed/fcoe_common.h>
+
+struct scsi_sgl_task_params {
+	struct scsi_sge *sgl;
+	struct regpair sgl_phys_addr;
+	u32 total_buffer_size;
+	u16 num_sges;
+
+	 /* true if SGL contains a small (< 4KB) SGE in middle(not 1st or last)
+	  * -> relevant for tx only
+	  */
+	bool small_mid_sge;
+};
+
+struct scsi_dif_task_params {
+	u32 initial_ref_tag;
+	bool initial_ref_tag_is_valid;
+	u16 application_tag;
+	u16 application_tag_mask;
+	u16 dif_block_size_log;
+	bool dif_on_network;
+	bool dif_on_host;
+	u8 host_guard_type;
+	u8 protection_type;
+	u8 ref_tag_mask;
+	bool crc_seed;
+
+	 /* Enable Connection error upon DIF error (segments with DIF errors are
+	  * dropped)
+	  */
+	bool tx_dif_conn_err_en;
+	bool ignore_app_tag;
+	bool keep_ref_tag_const;
+	bool validate_guard;
+	bool validate_app_tag;
+	bool validate_ref_tag;
+	bool forward_guard;
+	bool forward_app_tag;
+	bool forward_ref_tag;
+	bool forward_app_tag_with_mask;
+	bool forward_ref_tag_with_mask;
+};
+
+struct scsi_initiator_cmd_params {
+	 /* for cdb_size > default CDB size (extended CDB > 16 bytes) ->
+	  * pointer to the CDB buffer SGE
+	  */
+	struct scsi_sge extended_cdb_sge;
+
+	/* Physical address of sense data buffer for sense data - 256B buffer */
+	struct regpair sense_data_buffer_phys_addr;
+};
+
+/**
+ * @brief scsi_is_slow_sgl - checks for slow SGL
+ *
+ * @param num_sges - number of sges in SGL
+ * @param small_mid_sge - True is the SGL contains an SGE which is smaller than
+ * 4KB and its not the 1st or last SGE in the SGL
+ */
+bool scsi_is_slow_sgl(u16 num_sges, bool small_mid_sge);
+
+/**
+ * @brief init_scsi_sgl_context - initializes SGL task context
+ *
+ * @param sgl_params - SGL context parameters to initialize (output parameter)
+ * @param data_desc - context struct containing SGEs array to set (output
+ * parameter)
+ * @param sgl_task_params - SGL parameters (input)
+ */
+void init_scsi_sgl_context(struct scsi_sgl_params *sgl_params,
+	struct scsi_cached_sges *ctx_data_desc,
+	struct scsi_sgl_task_params *sgl_task_params);
+#endif