drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c - third_party/kernel - Git at Google

 /******************************************************************************
  *
  * This file is provided under a dual BSD/GPLv2 license.  When using or
  * redistributing this file, you may do so under either license.
  *
  * GPL LICENSE SUMMARY
  *
  * Copyright(c) 2018 - 2019 Intel Corporation
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of version 2 of the GNU General Public License as
  * published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * General Public License for more details.
  *
  * BSD LICENSE
  *
  * Copyright(c) 2018 - 2019 Intel Corporation
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  *  * Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *  * Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
  *  * Neither the name Intel Corporation nor the names of its
  *    contributors may be used to endorse or promote products derived
  *    from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  *****************************************************************************/

 #include "iwl-trans.h"
 #include "iwl-fh.h"
 #include "iwl-context-info-gen3.h"
 #include "internal.h"
 #include "iwl-prph.h"

 int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans,
 				 const struct fw_img *fw)
 {
 	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
 	struct iwl_context_info_gen3 *ctxt_info_gen3;
 	struct iwl_prph_scratch *prph_scratch;
 	struct iwl_prph_scratch_ctrl_cfg *prph_sc_ctrl;
 	struct iwl_prph_info *prph_info;
 	void *iml_img;
 	u32 control_flags = 0;
 	int ret;
 	int cmdq_size = max_t(u32, IWL_CMD_QUEUE_SIZE,
 			      trans->cfg->min_txq_size);

 	/* Allocate prph scratch */
 	prph_scratch = dma_alloc_coherent(trans->dev, sizeof(*prph_scratch),
 					  &trans_pcie->prph_scratch_dma_addr,
 					  GFP_KERNEL);
 	if (!prph_scratch)
 		return -ENOMEM;

 	prph_sc_ctrl = &prph_scratch->ctrl_cfg;

 	prph_sc_ctrl->version.version = 0;
 	prph_sc_ctrl->version.mac_id =
 		cpu_to_le16((u16)iwl_read32(trans, CSR_HW_REV));
 	prph_sc_ctrl->version.size = cpu_to_le16(sizeof(*prph_scratch) / 4);

 	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_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 */
 	if (!iwl_trans_dbg_ini_valid(trans))
 		iwl_pcie_alloc_fw_monitor(trans, 0);
 	if (trans->dbg.num_blocks) {
 		prph_sc_ctrl->hwm_cfg.hwm_base_addr =
 			cpu_to_le64(trans->dbg.fw_mon[0].physical);
 		prph_sc_ctrl->hwm_cfg.hwm_size =
 			cpu_to_le32(trans->dbg.fw_mon[0].size);
 	}

 	/* allocate ucode sections in dram and set addresses */
 	ret = iwl_pcie_init_fw_sec(trans, fw, &prph_scratch->dram);
 	if (ret)
 		goto err_free_prph_scratch;


 	/* Allocate prph information
 	 * currently we don't assign to the prph info anything, but it would get
 	 * assigned later */
 	prph_info = dma_alloc_coherent(trans->dev, sizeof(*prph_info),
 				       &trans_pcie->prph_info_dma_addr,
 				       GFP_KERNEL);
 	if (!prph_info) {
 		ret = -ENOMEM;
 		goto err_free_prph_scratch;
 	}

 	/* Allocate context info */
 	ctxt_info_gen3 = dma_alloc_coherent(trans->dev,
 					    sizeof(*ctxt_info_gen3),
 					    &trans_pcie->ctxt_info_dma_addr,
 					    GFP_KERNEL);
 	if (!ctxt_info_gen3) {
 		ret = -ENOMEM;
 		goto err_free_prph_info;
 	}

 	ctxt_info_gen3->prph_info_base_addr =
 		cpu_to_le64(trans_pcie->prph_info_dma_addr);
 	ctxt_info_gen3->prph_scratch_base_addr =
 		cpu_to_le64(trans_pcie->prph_scratch_dma_addr);
 	ctxt_info_gen3->prph_scratch_size =
 		cpu_to_le32(sizeof(*prph_scratch));
 	ctxt_info_gen3->cr_head_idx_arr_base_addr =
 		cpu_to_le64(trans_pcie->rxq->rb_stts_dma);
 	ctxt_info_gen3->tr_tail_idx_arr_base_addr =
 		cpu_to_le64(trans_pcie->rxq->tr_tail_dma);
 	ctxt_info_gen3->cr_tail_idx_arr_base_addr =
 		cpu_to_le64(trans_pcie->rxq->cr_tail_dma);
 	ctxt_info_gen3->cr_idx_arr_size =
 		cpu_to_le16(IWL_NUM_OF_COMPLETION_RINGS);
 	ctxt_info_gen3->tr_idx_arr_size =
 		cpu_to_le16(IWL_NUM_OF_TRANSFER_RINGS);
 	ctxt_info_gen3->mtr_base_addr =
 		cpu_to_le64(trans_pcie->txq[trans_pcie->cmd_queue]->dma_addr);
 	ctxt_info_gen3->mcr_base_addr =
 		cpu_to_le64(trans_pcie->rxq->used_bd_dma);
 	ctxt_info_gen3->mtr_size =
 		cpu_to_le16(TFD_QUEUE_CB_SIZE(cmdq_size));
 	ctxt_info_gen3->mcr_size =
 		cpu_to_le16(RX_QUEUE_CB_SIZE(MQ_RX_TABLE_SIZE));

 	trans_pcie->ctxt_info_gen3 = ctxt_info_gen3;
 	trans_pcie->prph_info = prph_info;
 	trans_pcie->prph_scratch = prph_scratch;

 	/* Allocate IML */
 	iml_img = dma_alloc_coherent(trans->dev, trans->iml_len,
 				     &trans_pcie->iml_dma_addr, GFP_KERNEL);
 	if (!iml_img) {
 		ret = -ENOMEM;
 		goto err_free_ctxt_info;
 	}

 	memcpy(iml_img, trans->iml, trans->iml_len);

 	iwl_enable_fw_load_int_ctx_info(trans);

 	/* kick FW self load */
 	iwl_write64(trans, CSR_CTXT_INFO_ADDR,
 		    trans_pcie->ctxt_info_dma_addr);
 	iwl_write64(trans, CSR_IML_DATA_ADDR,
 		    trans_pcie->iml_dma_addr);
 	iwl_write32(trans, CSR_IML_SIZE_ADDR, trans->iml_len);

 	iwl_set_bit(trans, CSR_CTXT_INFO_BOOT_CTRL,
 		    CSR_AUTO_FUNC_BOOT_ENA);

 	if (trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_AX210) {
 		/*
 		 * The firmware initializes this again later (to a smaller
 		 * value), but for the boot process initialize the LTR to
 		 * ~250 usec.
 		 */
 		u32 val = CSR_LTR_LONG_VAL_AD_NO_SNOOP_REQ |
 			  u32_encode_bits(CSR_LTR_LONG_VAL_AD_SCALE_USEC,
 					  CSR_LTR_LONG_VAL_AD_NO_SNOOP_SCALE) |
 			  u32_encode_bits(250,
 					  CSR_LTR_LONG_VAL_AD_NO_SNOOP_VAL) |
 			  CSR_LTR_LONG_VAL_AD_SNOOP_REQ |
 			  u32_encode_bits(CSR_LTR_LONG_VAL_AD_SCALE_USEC,
 					  CSR_LTR_LONG_VAL_AD_SNOOP_SCALE) |
 			  u32_encode_bits(250, CSR_LTR_LONG_VAL_AD_SNOOP_VAL);

 		iwl_write32(trans, CSR_LTR_LONG_VAL_AD, val);
 	}

 	if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
 		iwl_write_umac_prph(trans, UREG_CPU_INIT_RUN, 1);
 	else
 		iwl_set_bit(trans, CSR_GP_CNTRL, CSR_AUTO_FUNC_INIT);

 	return 0;

 err_free_ctxt_info:
 	dma_free_coherent(trans->dev, sizeof(*trans_pcie->ctxt_info_gen3),
 			  trans_pcie->ctxt_info_gen3,
 			  trans_pcie->ctxt_info_dma_addr);
 	trans_pcie->ctxt_info_gen3 = NULL;
 err_free_prph_info:
 	dma_free_coherent(trans->dev,
 			  sizeof(*prph_info),
 			prph_info,
 			trans_pcie->prph_info_dma_addr);

 err_free_prph_scratch:
 	dma_free_coherent(trans->dev,
 			  sizeof(*prph_scratch),
 			prph_scratch,
 			trans_pcie->prph_scratch_dma_addr);
 	return ret;

 }

 void iwl_pcie_ctxt_info_gen3_free(struct iwl_trans *trans)
 {
 	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);

 	if (!trans_pcie->ctxt_info_gen3)
 		return;

 	dma_free_coherent(trans->dev, sizeof(*trans_pcie->ctxt_info_gen3),
 			  trans_pcie->ctxt_info_gen3,
 			  trans_pcie->ctxt_info_dma_addr);
 	trans_pcie->ctxt_info_dma_addr = 0;
 	trans_pcie->ctxt_info_gen3 = NULL;

 	iwl_pcie_ctxt_info_free_fw_img(trans);

 	dma_free_coherent(trans->dev, sizeof(*trans_pcie->prph_scratch),
 			  trans_pcie->prph_scratch,
 			  trans_pcie->prph_scratch_dma_addr);
 	trans_pcie->prph_scratch_dma_addr = 0;
 	trans_pcie->prph_scratch = NULL;

 	dma_free_coherent(trans->dev, sizeof(*trans_pcie->prph_info),
 			  trans_pcie->prph_info,
 			  trans_pcie->prph_info_dma_addr);
 	trans_pcie->prph_info_dma_addr = 0;
 	trans_pcie->prph_info = NULL;
 }
	/******************************************************************************
	*
	* This file is provided under a dual BSD/GPLv2 license. When using or
	* redistributing this file, you may do so under either license.
	*
	* GPL LICENSE SUMMARY
	*
	* Copyright(c) 2018 - 2019 Intel Corporation
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of version 2 of the GNU General Public License as
	* published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful, but
	* WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* General Public License for more details.
	*
	* BSD LICENSE
	*
	* Copyright(c) 2018 - 2019 Intel Corporation
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	*
	* * Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* * Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in
	* the documentation and/or other materials provided with the
	* distribution.
	* * Neither the name Intel Corporation nor the names of its
	* contributors may be used to endorse or promote products derived
	* from this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*
	*****************************************************************************/

	#include "iwl-trans.h"
	#include "iwl-fh.h"
	#include "iwl-context-info-gen3.h"
	#include "internal.h"
	#include "iwl-prph.h"

	int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans,
	const struct fw_img *fw)
	{
	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
	struct iwl_context_info_gen3 *ctxt_info_gen3;
	struct iwl_prph_scratch *prph_scratch;
	struct iwl_prph_scratch_ctrl_cfg *prph_sc_ctrl;
	struct iwl_prph_info *prph_info;
	void *iml_img;
	u32 control_flags = 0;
	int ret;
	int cmdq_size = max_t(u32, IWL_CMD_QUEUE_SIZE,
	trans->cfg->min_txq_size);

	/* Allocate prph scratch */
	prph_scratch = dma_alloc_coherent(trans->dev, sizeof(*prph_scratch),
	&trans_pcie->prph_scratch_dma_addr,
	GFP_KERNEL);
	if (!prph_scratch)
	return -ENOMEM;

	prph_sc_ctrl = &prph_scratch->ctrl_cfg;

	prph_sc_ctrl->version.version = 0;
	prph_sc_ctrl->version.mac_id =
	cpu_to_le16((u16)iwl_read32(trans, CSR_HW_REV));
	prph_sc_ctrl->version.size = cpu_to_le16(sizeof(*prph_scratch) / 4);

	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_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 */
	if (!iwl_trans_dbg_ini_valid(trans))
	iwl_pcie_alloc_fw_monitor(trans, 0);
	if (trans->dbg.num_blocks) {
	prph_sc_ctrl->hwm_cfg.hwm_base_addr =
	cpu_to_le64(trans->dbg.fw_mon[0].physical);
	prph_sc_ctrl->hwm_cfg.hwm_size =
	cpu_to_le32(trans->dbg.fw_mon[0].size);
	}

	/* allocate ucode sections in dram and set addresses */
	ret = iwl_pcie_init_fw_sec(trans, fw, &prph_scratch->dram);
	if (ret)
	goto err_free_prph_scratch;


	/* Allocate prph information
	* currently we don't assign to the prph info anything, but it would get
	* assigned later */
	prph_info = dma_alloc_coherent(trans->dev, sizeof(*prph_info),
	&trans_pcie->prph_info_dma_addr,
	GFP_KERNEL);
	if (!prph_info) {
	ret = -ENOMEM;
	goto err_free_prph_scratch;
	}

	/* Allocate context info */
	ctxt_info_gen3 = dma_alloc_coherent(trans->dev,
	sizeof(*ctxt_info_gen3),
	&trans_pcie->ctxt_info_dma_addr,
	GFP_KERNEL);
	if (!ctxt_info_gen3) {
	ret = -ENOMEM;
	goto err_free_prph_info;
	}

	ctxt_info_gen3->prph_info_base_addr =
	cpu_to_le64(trans_pcie->prph_info_dma_addr);
	ctxt_info_gen3->prph_scratch_base_addr =
	cpu_to_le64(trans_pcie->prph_scratch_dma_addr);
	ctxt_info_gen3->prph_scratch_size =
	cpu_to_le32(sizeof(*prph_scratch));
	ctxt_info_gen3->cr_head_idx_arr_base_addr =
	cpu_to_le64(trans_pcie->rxq->rb_stts_dma);
	ctxt_info_gen3->tr_tail_idx_arr_base_addr =
	cpu_to_le64(trans_pcie->rxq->tr_tail_dma);
	ctxt_info_gen3->cr_tail_idx_arr_base_addr =
	cpu_to_le64(trans_pcie->rxq->cr_tail_dma);
	ctxt_info_gen3->cr_idx_arr_size =
	cpu_to_le16(IWL_NUM_OF_COMPLETION_RINGS);
	ctxt_info_gen3->tr_idx_arr_size =
	cpu_to_le16(IWL_NUM_OF_TRANSFER_RINGS);
	ctxt_info_gen3->mtr_base_addr =
	cpu_to_le64(trans_pcie->txq[trans_pcie->cmd_queue]->dma_addr);
	ctxt_info_gen3->mcr_base_addr =
	cpu_to_le64(trans_pcie->rxq->used_bd_dma);
	ctxt_info_gen3->mtr_size =
	cpu_to_le16(TFD_QUEUE_CB_SIZE(cmdq_size));
	ctxt_info_gen3->mcr_size =
	cpu_to_le16(RX_QUEUE_CB_SIZE(MQ_RX_TABLE_SIZE));

	trans_pcie->ctxt_info_gen3 = ctxt_info_gen3;
	trans_pcie->prph_info = prph_info;
	trans_pcie->prph_scratch = prph_scratch;

	/* Allocate IML */
	iml_img = dma_alloc_coherent(trans->dev, trans->iml_len,
	&trans_pcie->iml_dma_addr, GFP_KERNEL);
	if (!iml_img) {
	ret = -ENOMEM;
	goto err_free_ctxt_info;
	}

	memcpy(iml_img, trans->iml, trans->iml_len);

	iwl_enable_fw_load_int_ctx_info(trans);

	/* kick FW self load */
	iwl_write64(trans, CSR_CTXT_INFO_ADDR,
	trans_pcie->ctxt_info_dma_addr);
	iwl_write64(trans, CSR_IML_DATA_ADDR,
	trans_pcie->iml_dma_addr);
	iwl_write32(trans, CSR_IML_SIZE_ADDR, trans->iml_len);

	iwl_set_bit(trans, CSR_CTXT_INFO_BOOT_CTRL,
	CSR_AUTO_FUNC_BOOT_ENA);

	if (trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_AX210) {
	/*
	* The firmware initializes this again later (to a smaller
	* value), but for the boot process initialize the LTR to
	* ~250 usec.
	*/
	u32 val = CSR_LTR_LONG_VAL_AD_NO_SNOOP_REQ \|
	u32_encode_bits(CSR_LTR_LONG_VAL_AD_SCALE_USEC,
	CSR_LTR_LONG_VAL_AD_NO_SNOOP_SCALE) \|
	u32_encode_bits(250,
	CSR_LTR_LONG_VAL_AD_NO_SNOOP_VAL) \|
	CSR_LTR_LONG_VAL_AD_SNOOP_REQ \|
	u32_encode_bits(CSR_LTR_LONG_VAL_AD_SCALE_USEC,
	CSR_LTR_LONG_VAL_AD_SNOOP_SCALE) \|
	u32_encode_bits(250, CSR_LTR_LONG_VAL_AD_SNOOP_VAL);

	iwl_write32(trans, CSR_LTR_LONG_VAL_AD, val);
	}

	if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
	iwl_write_umac_prph(trans, UREG_CPU_INIT_RUN, 1);
	else
	iwl_set_bit(trans, CSR_GP_CNTRL, CSR_AUTO_FUNC_INIT);

	return 0;

	err_free_ctxt_info:
	dma_free_coherent(trans->dev, sizeof(*trans_pcie->ctxt_info_gen3),
	trans_pcie->ctxt_info_gen3,
	trans_pcie->ctxt_info_dma_addr);
	trans_pcie->ctxt_info_gen3 = NULL;
	err_free_prph_info:
	dma_free_coherent(trans->dev,
	sizeof(*prph_info),
	prph_info,
	trans_pcie->prph_info_dma_addr);

	err_free_prph_scratch:
	dma_free_coherent(trans->dev,
	sizeof(*prph_scratch),
	prph_scratch,
	trans_pcie->prph_scratch_dma_addr);
	return ret;

	}

	void iwl_pcie_ctxt_info_gen3_free(struct iwl_trans *trans)
	{
	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);

	if (!trans_pcie->ctxt_info_gen3)
	return;

	dma_free_coherent(trans->dev, sizeof(*trans_pcie->ctxt_info_gen3),
	trans_pcie->ctxt_info_gen3,
	trans_pcie->ctxt_info_dma_addr);
	trans_pcie->ctxt_info_dma_addr = 0;
	trans_pcie->ctxt_info_gen3 = NULL;

	iwl_pcie_ctxt_info_free_fw_img(trans);

	dma_free_coherent(trans->dev, sizeof(*trans_pcie->prph_scratch),
	trans_pcie->prph_scratch,
	trans_pcie->prph_scratch_dma_addr);
	trans_pcie->prph_scratch_dma_addr = 0;
	trans_pcie->prph_scratch = NULL;

	dma_free_coherent(trans->dev, sizeof(*trans_pcie->prph_info),
	trans_pcie->prph_info,
	trans_pcie->prph_info_dma_addr);
	trans_pcie->prph_info_dma_addr = 0;
	trans_pcie->prph_info = NULL;
	}