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Commit 1b235ff0 authored by Rama Krishna Phani A's avatar Rama Krishna Phani A Committed by Gerrit - the friendly Code Review server
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msm: mhi_dev: Add cv2x HW channel support in MHI driver 



CV2X channels are used to transfer latency sensitive information
between host and modem using the IPA HW-accelerated path.

Change-Id: I3fd15de5115c4e861469f19623a7d81893020f4a
Signed-off-by: default avatarRama Krishna Phani A <rphani@codeaurora.org>
parent 8517bb17

drivers/platform/msm/mhi_dev/mhi.c

+20 −6
Original line number Original line Diff line number Diff line
@@ -44,7 +44,6 @@ 
#define MHI_RING_PRIMARY_EVT_ID		1

#define MHI_RING_PRIMARY_EVT_ID		1

#define MHI_1K_SIZE			0x1000

#define MHI_1K_SIZE			0x1000

/* Updated Specification for event start is NER - 2 and end - NER -1 */

/* Updated Specification for event start is NER - 2 and end - NER -1 */

#define MHI_HW_ACC_EVT_RING_START	3

#define MHI_HW_ACC_EVT_RING_END		1

#define MHI_HW_ACC_EVT_RING_END		1





#define MHI_HOST_REGION_NUM             2

#define MHI_HOST_REGION_NUM             2
@@ -306,7 +305,7 @@ static void mhi_dev_get_erdb_db_cfg(struct mhi_dev *mhi, 
		break;

		break;

	default:

	default:

		erdb_cfg->base = mhi->cfg.event_rings -

		erdb_cfg->base = mhi->cfg.event_rings -

					MHI_HW_ACC_EVT_RING_START;

					(mhi->cfg.hw_event_rings);

		erdb_cfg->end =  mhi->cfg.event_rings -

		erdb_cfg->end =  mhi->cfg.event_rings -

					MHI_HW_ACC_EVT_RING_END;

					MHI_HW_ACC_EVT_RING_END;

		break;

		break;
@@ -496,17 +495,32 @@ static int mhi_hwc_chcmd(struct mhi_dev *mhi, uint chid, 
	case MHI_DEV_RING_EL_START:

	case MHI_DEV_RING_EL_START:

		connect_params.channel_id = chid;

		connect_params.channel_id = chid;

		connect_params.sys.skip_ep_cfg = true;

		connect_params.sys.skip_ep_cfg = true;

		if (chid == MHI_CLIENT_ADPL_IN)



		switch (chid) {

		case MHI_CLIENT_ADPL_IN:

			connect_params.sys.client = IPA_CLIENT_MHI_DPL_CONS;

			connect_params.sys.client = IPA_CLIENT_MHI_DPL_CONS;

		else if ((chid % 2) == 0x0)

			break;

		case MHI_CLIENT_IP_HW_0_OUT:

			connect_params.sys.client = IPA_CLIENT_MHI_PROD;

			connect_params.sys.client = IPA_CLIENT_MHI_PROD;

		else

			break;

		case MHI_CLIENT_IP_HW_0_IN:

			connect_params.sys.client = IPA_CLIENT_MHI_CONS;

			connect_params.sys.client = IPA_CLIENT_MHI_CONS;

			break;

		case MHI_CLIENT_IP_HW_1_OUT:

			connect_params.sys.client = IPA_CLIENT_MHI2_PROD;

			break;

		case MHI_CLIENT_IP_HW_1_IN:

			connect_params.sys.client = IPA_CLIENT_MHI2_CONS;

			break;

		default:

			pr_err("Invalid channel = 0x%X\n", chid);

			return -EINVAL;

		}





		rc = ipa_mhi_connect_pipe(&connect_params,

		rc = ipa_mhi_connect_pipe(&connect_params,

			&mhi->ipa_clnt_hndl[chid-HW_CHANNEL_BASE]);

			&mhi->ipa_clnt_hndl[chid-HW_CHANNEL_BASE]);

		if (rc)

		if (rc)

			pr_err("HW Channel%d start failed 0x%X\n",

			pr_err("HW Channel%d start failed : %d\n",

							chid, rc);

							chid, rc);

		break;

		break;

	case MHI_DEV_RING_EL_INVALID:

	case MHI_DEV_RING_EL_INVALID:

drivers/platform/msm/mhi_dev/mhi.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -263,6 +263,7 @@ struct mhi_config { 
	uint32_t	mhi_reg_len;

	uint32_t	mhi_reg_len;

	uint32_t	version;

	uint32_t	version;

	uint32_t	event_rings;

	uint32_t	event_rings;

	uint32_t	hw_event_rings;

	uint32_t	channels;

	uint32_t	channels;

	uint32_t	chdb_offset;

	uint32_t	chdb_offset;

	uint32_t	erdb_offset;

	uint32_t	erdb_offset;

drivers/platform/msm/mhi_dev/mhi_hwio.h

+3 −3
Original line number Original line Diff line number Diff line 
/* Copyright (c) 2015, 2017-2018, The Linux Foundation. All rights reserved.

/* Copyright (c) 2015, 2017-2019, The Linux Foundation. All rights reserved.

 *

 *

 * This program is free software; you can redistribute it and/or modify

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * it under the terms of the GNU General Public License version 2 and
@@ -65,8 +65,8 @@ 
#define MHIVER_MHIVER_SHIFT				0x0

#define MHIVER_MHIVER_SHIFT				0x0





#define MHICFG						(0x0110)

#define MHICFG						(0x0110)

#define MHICFG_RESERVED_BITS31_24_MASK			0xff000000

#define MHICFG_NHWER_MASK			0xff000000

#define MHICFG_RESERVED_BITS31_24_SHIFT			0x18

#define MHICFG_NHWER_SHIFT			0x18

#define MHICFG_NER_MASK					0xff0000

#define MHICFG_NER_MASK					0xff0000

#define MHICFG_NER_SHIFT				0x10

#define MHICFG_NER_SHIFT				0x10

#define MHICFG_RESERVED_BITS15_8_MASK			0xff00

#define MHICFG_RESERVED_BITS15_8_MASK			0xff00

drivers/platform/msm/mhi_dev/mhi_mmio.c

+6 −1
Original line number Original line Diff line number Diff line 
/* Copyright (c) 2015, 2017-2018, The Linux Foundation. All rights reserved.

/* Copyright (c) 2015, 2017-2019, The Linux Foundation. All rights reserved.

 *

 *

 * This program is free software; you can redistribute it and/or modify

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * it under the terms of the GNU General Public License version 2 and
@@ -953,6 +953,11 @@ int mhi_dev_mmio_init(struct mhi_dev *dev) 
	if (rc)

	if (rc)

		return rc;

		return rc;





	rc = mhi_dev_mmio_masked_read(dev, MHICFG, MHICFG_NHWER_MASK,

				MHICFG_NHWER_SHIFT, &dev->cfg.hw_event_rings);

	if (rc)

		return rc;



	rc = mhi_dev_mmio_read(dev, CHDBOFF, &dev->cfg.chdb_offset);

	rc = mhi_dev_mmio_read(dev, CHDBOFF, &dev->cfg.chdb_offset);

	if (rc)

	if (rc)

		return rc;

		return rc;

drivers/platform/msm/mhi_dev/mhi_uci.c

+24 −0
Original line number Original line Diff line number Diff line
@@ -38,6 +38,7 @@ 
#define MAX_NR_TRBS_PER_CHAN		9

#define MAX_NR_TRBS_PER_CHAN		9

#define MHI_QTI_IFACE_ID		4

#define MHI_QTI_IFACE_ID		4

#define MHI_ADPL_IFACE_ID		5

#define MHI_ADPL_IFACE_ID		5

#define MHI_CV2X_IFACE_ID		6

#define DEVICE_NAME			"mhi"

#define DEVICE_NAME			"mhi"

#define MAX_DEVICE_NAME_SIZE		80

#define MAX_DEVICE_NAME_SIZE		80
@@ -1576,6 +1577,29 @@ static long mhi_uci_client_ioctl(struct file *file, unsigned int cmd, 
		uci_log(UCI_DBG_DBG, "DPL ipa_prod_idx:%d\n",

		uci_log(UCI_DBG_DBG, "DPL ipa_prod_idx:%d\n",

			epinfo.ipa_ep_pair.prod_pipe_num);

			epinfo.ipa_ep_pair.prod_pipe_num);





		rc = copy_to_user((void __user *)arg, &epinfo,

			sizeof(epinfo));

		if (rc)

			uci_log(UCI_DBG_ERROR, "copying to user space failed");

	} else if (cmd == MHI_UCI_CV2X_EP_LOOKUP) {

		uci_log(UCI_DBG_DBG, "CV2X EP_LOOKUP for client:%d\n",

						uci_handle->client_index);

		epinfo.ph_ep_info.ep_type = DATA_EP_TYPE_PCIE;

		epinfo.ph_ep_info.peripheral_iface_id = MHI_CV2X_IFACE_ID;

		epinfo.ipa_ep_pair.cons_pipe_num =

			ipa_get_ep_mapping(IPA_CLIENT_MHI2_PROD);

		epinfo.ipa_ep_pair.prod_pipe_num =

			ipa_get_ep_mapping(IPA_CLIENT_MHI2_CONS);



		uci_log(UCI_DBG_DBG, "client:%d ep_type:%d intf:%d\n",

			uci_handle->client_index,

			epinfo.ph_ep_info.ep_type,

			epinfo.ph_ep_info.peripheral_iface_id);



		uci_log(UCI_DBG_DBG, "ipa_cons2_idx:%d ipa_prod2_idx:%d\n",

			epinfo.ipa_ep_pair.cons_pipe_num,

			epinfo.ipa_ep_pair.prod_pipe_num);



		rc = copy_to_user((void __user *)arg, &epinfo,

		rc = copy_to_user((void __user *)arg, &epinfo,

			sizeof(epinfo));

			sizeof(epinfo));

		if (rc)

		if (rc)