iwlwifi: pcie: start early debug for 22560 devices

In 22560 devices we can start debug using context info gen3. Configure
the fw to start collecting logs to the dram before init.
Signed-off-by: Golan Ben Ami <golan.ben.ami@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c

@@ -84,13 +84,22 @@ int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans,
 	control_flags = IWL_PRPH_SCRATCH_RB_SIZE_4K |
 			IWL_PRPH_SCRATCH_MTR_MODE |
 			(IWL_PRPH_MTR_FORMAT_256B &
-			 IWL_PRPH_SCRATCH_MTR_FORMAT);
+			 IWL_PRPH_SCRATCH_MTR_FORMAT) |
+			IWL_PRPH_SCRATCH_EARLY_DEBUG_EN |
+			IWL_PRPH_SCRATCH_EDBG_DEST_DRAM;
 	prph_sc_ctrl->control.control_flags = cpu_to_le32(control_flags);
 
 	/* initialize RX default queue */
 	prph_sc_ctrl->rbd_cfg.free_rbd_addr =
 		cpu_to_le64(trans_pcie->rxq->bd_dma);
 
+	/* Configure debug, for integration */
+	iwl_pcie_alloc_fw_monitor(trans, 0);
+	prph_sc_ctrl->hwm_cfg.hwm_base_addr =
+		cpu_to_le64(trans_pcie->fw_mon_phys);
+	prph_sc_ctrl->hwm_cfg.hwm_size =
+		cpu_to_le32(trans_pcie->fw_mon_size);
+
 	/* allocate ucode sections in dram and set addresses */
 	ret = iwl_pcie_init_fw_sec(trans, fw, &prph_scratch->dram);
 	if (ret) {
@@ -157,10 +166,6 @@ int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans,
 
 	iwl_enable_interrupts(trans);
 
-	/* Configure debug, if exists */
-	if (trans->dbg_dest_tlv)
-		iwl_pcie_apply_destination(trans);
-
 	/* kick FW self load */
 	iwl_write64(trans, CSR_CTXT_INFO_ADDR,
 		    trans_pcie->ctxt_info_dma_addr);

drivers/net/wireless/intel/iwlwifi/pcie/internal.h

@@ -895,6 +895,9 @@ void iwl_pcie_free_tso_page(struct iwl_trans_pcie *trans_pcie,
 struct iwl_tso_hdr_page *get_page_hdr(struct iwl_trans *trans, size_t len);
 #endif
 
+/* common functions that are used by gen3 transport */
+void iwl_pcie_alloc_fw_monitor(struct iwl_trans *trans, u8 max_power);
+
 /* transport gen 2 exported functions */
 int iwl_trans_pcie_gen2_start_fw(struct iwl_trans *trans,
 				 const struct fw_img *fw, bool run_in_rfkill);

drivers/net/wireless/intel/iwlwifi/pcie/trans.c

@@ -203,7 +203,7 @@ static void iwl_pcie_free_fw_monitor(struct iwl_trans *trans)
 	trans_pcie->fw_mon_size = 0;
 }
 
-static void iwl_pcie_alloc_fw_monitor(struct iwl_trans *trans, u8 max_power)
+void iwl_pcie_alloc_fw_monitor(struct iwl_trans *trans, u8 max_power)
 {
 	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
 	struct page *page = NULL;