Commit 6a88a4fe authored by Omar Ramirez Luna's avatar Omar Ramirez Luna Committed by Greg Kroah-Hartman
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staging: ti dspbridge: add services 



Add TI's DSP Bridge driver services code

Signed-off-by: default avatarOmar Ramirez Luna <omar.ramirez@ti.com>
Signed-off-by: default avatarKanigeri, Hari <h-kanigeri2@ti.com>
Signed-off-by: default avatarAmeya Palande <ameya.palande@nokia.com>
Signed-off-by: default avatarGuzman Lugo, Fernando <fernando.lugo@ti.com>
Signed-off-by: default avatarHebbar, Shivananda <x0hebbar@ti.com>
Signed-off-by: default avatarRamos Falcon, Ernesto <ernesto@ti.com>
Signed-off-by: default avatarFelipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: default avatarAnna, Suman <s-anna@ti.com>
Signed-off-by: default avatarGupta, Ramesh <grgupta@ti.com>
Signed-off-by: default avatarGomez Castellanos, Ivan <ivan.gomez@ti.com>
Signed-off-by: default avatarAndy Shevchenko <ext-andriy.shevchenko@nokia.com>
Signed-off-by: default avatarArmando Uribe De Leon <x0095078@ti.com>
Signed-off-by: default avatarDeepak Chitriki <deepak.chitriki@ti.com>
Signed-off-by: default avatarMenon, Nishanth <nm@ti.com>
Signed-off-by: default avatarPhil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: default avatarOhad Ben-Cohen <ohad@wizery.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 7227b671

drivers/staging/tidspbridge/services/cfg.c

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/*

 * cfg.c

 *

 * DSP-BIOS Bridge driver support functions for TI OMAP processors.

 *

 * Implementation of platform specific config services.

 *

 * Copyright (C) 2005-2006 Texas Instruments, Inc.

 *

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

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

 * published by the Free Software Foundation.

 *

 * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED

 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

 */



/*  ----------------------------------- DSP/BIOS Bridge */

#include <dspbridge/std.h>

#include <dspbridge/dbdefs.h>



/*  ----------------------------------- Trace & Debug */

#include <dspbridge/dbc.h>



/*  ----------------------------------- OS Adaptation Layer */



/*  ----------------------------------- This */

#include <dspbridge/cfg.h>

#include <dspbridge/drv.h>



struct drv_ext {

	struct list_head link;

	char sz_string[MAXREGPATHLENGTH];

};



/*

 *  ======== cfg_exit ========

 *  Purpose:

 *      Discontinue usage of the CFG module.

 */

void cfg_exit(void)

{

	/* Do nothing */

}



/*

 *  ======== cfg_get_auto_start ========

 *  Purpose:

 *      Retreive the autostart mask, if any, for this board.

 */

int cfg_get_auto_start(struct cfg_devnode *dev_node_obj,

			      OUT u32 *pdwAutoStart)

{

	int status = 0;

	u32 dw_buf_size;

	struct drv_data *drv_datap = dev_get_drvdata(bridge);



	dw_buf_size = sizeof(*pdwAutoStart);

	if (!dev_node_obj)

		status = -EFAULT;

	if (!pdwAutoStart || !drv_datap)

		status = -EFAULT;

	if (DSP_SUCCEEDED(status))

		*pdwAutoStart = (drv_datap->base_img) ? 1 : 0;



	DBC_ENSURE((status == 0 &&

		    (*pdwAutoStart == 0 || *pdwAutoStart == 1))

		   || status != 0);

	return status;

}



/*

 *  ======== cfg_get_dev_object ========

 *  Purpose:

 *      Retrieve the Device Object handle for a given devnode.

 */

int cfg_get_dev_object(struct cfg_devnode *dev_node_obj,

			      OUT u32 *pdwValue)

{

	int status = 0;

	u32 dw_buf_size;

	struct drv_data *drv_datap = dev_get_drvdata(bridge);



	if (!drv_datap)

		status = -EPERM;



	if (!dev_node_obj)

		status = -EFAULT;



	if (!pdwValue)

		status = -EFAULT;



	dw_buf_size = sizeof(pdwValue);

	if (DSP_SUCCEEDED(status)) {



		/* check the device string and then store dev object */

		if (!

		    (strcmp

		     ((char *)((struct drv_ext *)dev_node_obj)->sz_string,

		      "TIOMAP1510")))

			*pdwValue = (u32)drv_datap->dev_object;

	}

	if (DSP_FAILED(status))

		pr_err("%s: Failed, status 0x%x\n", __func__, status);

	return status;

}



/*

 *  ======== cfg_get_exec_file ========

 *  Purpose:

 *      Retreive the default executable, if any, for this board.

 */

int cfg_get_exec_file(struct cfg_devnode *dev_node_obj, u32 ul_buf_size,

			     OUT char *pstrExecFile)

{

	int status = 0;

	struct drv_data *drv_datap = dev_get_drvdata(bridge);



	if (!dev_node_obj)

		status = -EFAULT;



	else if (!pstrExecFile || !drv_datap)

		status = -EFAULT;



	if (strlen(drv_datap->base_img) > ul_buf_size)

		status = -EINVAL;



	if (DSP_SUCCEEDED(status) && drv_datap->base_img)

		strcpy(pstrExecFile, drv_datap->base_img);



	if (DSP_FAILED(status))

		pr_err("%s: Failed, status 0x%x\n", __func__, status);

	DBC_ENSURE(((status == 0) &&

		    (strlen(pstrExecFile) <= ul_buf_size))

		   || (status != 0));

	return status;

}



/*

 *  ======== cfg_get_object ========

 *  Purpose:

 *      Retrieve the Object handle from the Registry

 */

int cfg_get_object(OUT u32 *pdwValue, u8 dw_type)

{

	int status = -EINVAL;

	struct drv_data *drv_datap = dev_get_drvdata(bridge);



	DBC_REQUIRE(pdwValue != NULL);



	if (!drv_datap)

		return -EPERM;



	switch (dw_type) {

	case (REG_DRV_OBJECT):

		if (drv_datap->drv_object) {

			*pdwValue = (u32)drv_datap->drv_object;

			status = 0;

		} else {

			status = -ENODATA;

		}

		break;

	case (REG_MGR_OBJECT):

		if (drv_datap->mgr_object) {

			*pdwValue = (u32)drv_datap->mgr_object;

			status = 0;

		} else {

			status = -ENODATA;

		}

		break;



	default:

		break;

	}

	if (DSP_FAILED(status)) {

		*pdwValue = 0;

		pr_err("%s: Failed, status 0x%x\n", __func__, status);

	}

	DBC_ENSURE((DSP_SUCCEEDED(status) && *pdwValue != 0) ||

		   (DSP_FAILED(status) && *pdwValue == 0));

	return status;

}



/*

 *  ======== cfg_init ========

 *  Purpose:

 *      Initialize the CFG module's private state.

 */

bool cfg_init(void)

{

	return true;

}



/*

 *  ======== cfg_set_dev_object ========

 *  Purpose:

 *      Store the Device Object handle and dev_node pointer for a given devnode.

 */

int cfg_set_dev_object(struct cfg_devnode *dev_node_obj, u32 dwValue)

{

	int status = 0;

	struct drv_data *drv_datap = dev_get_drvdata(bridge);



	if (!drv_datap) {

		pr_err("%s: Failed, status 0x%x\n", __func__, status);

		return -EPERM;

	}



	if (!dev_node_obj)

		status = -EFAULT;



	if (DSP_SUCCEEDED(status)) {

		/* Store the Bridge device object in the Registry */



		if (!(strcmp((char *)dev_node_obj, "TIOMAP1510")))

			drv_datap->dev_object = (void *) dwValue;

	}

	if (DSP_FAILED(status))

		pr_err("%s: Failed, status 0x%x\n", __func__, status);



	return status;

}



/*

 *  ======== cfg_set_object ========

 *  Purpose:

 *      Store the Driver Object handle

 */

int cfg_set_object(u32 dwValue, u8 dw_type)

{

	int status = -EINVAL;

	struct drv_data *drv_datap = dev_get_drvdata(bridge);



	if (!drv_datap)

		return -EPERM;



	switch (dw_type) {

	case (REG_DRV_OBJECT):

		drv_datap->drv_object = (void *)dwValue;

		status = 0;

		break;

	case (REG_MGR_OBJECT):

		drv_datap->mgr_object = (void *)dwValue;

		status = 0;

		break;

	default:

		break;

	}

	if (DSP_FAILED(status))

		pr_err("%s: Failed, status 0x%x\n", __func__, status);

	return status;

}

drivers/staging/tidspbridge/services/ntfy.c

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Original line number Diff line number Diff line 
/*

 * ntfy.c

 *

 * DSP-BIOS Bridge driver support functions for TI OMAP processors.

 *

 * Manage lists of notification events.

 *

 * Copyright (C) 2005-2006 Texas Instruments, Inc.

 *

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

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

 * published by the Free Software Foundation.

 *

 * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED

 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

 */



/*  ----------------------------------- This */

#include <dspbridge/ntfy.h>



int dsp_notifier_event(struct notifier_block *this, unsigned long event,

			   void *data)

{

	struct  ntfy_event *ne = container_of(this, struct ntfy_event,

							noti_block);

	if (ne->event & event)

		sync_set_event(&ne->sync_obj);

	return NOTIFY_OK;

}

drivers/staging/tidspbridge/services/services.c

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Original line number Diff line number Diff line 
/*

 * services.c

 *

 * DSP-BIOS Bridge driver support functions for TI OMAP processors.

 *

 * Provide SERVICES loading.

 *

 * Copyright (C) 2005-2006 Texas Instruments, Inc.

 *

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

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

 * published by the Free Software Foundation.

 *

 * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED

 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

 */



#include <dspbridge/host_os.h>



/*  ----------------------------------- DSP/BIOS Bridge */

#include <dspbridge/std.h>

#include <dspbridge/dbdefs.h>



/*  ----------------------------------- Trace & Debug */

#include <dspbridge/dbc.h>



/*  ----------------------------------- OS Adaptation Layer */

#include <dspbridge/cfg.h>

#include <dspbridge/ntfy.h>

#include <dspbridge/sync.h>

#include <dspbridge/clk.h>



/*  ----------------------------------- This */

#include <dspbridge/services.h>



/*

 *  ======== services_exit ========

 *  Purpose:

 *      Discontinue usage of module; free resources when reference count

 *      reaches 0.

 */

void services_exit(void)

{

	cfg_exit();

}



/*

 *  ======== services_init ========

 *  Purpose:

 *      Initializes SERVICES modules.

 */

bool services_init(void)

{

	bool ret = true;

	bool fcfg;



	/* Perform required initialization of SERVICES modules. */

	fcfg = cfg_init();



	ret = fcfg;



	if (!ret) {

		if (fcfg)

			cfg_exit();

	}



	return ret;

}

drivers/staging/tidspbridge/services/sync.c

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Original line number Diff line number Diff line 
/*

 * sync.c

 *

 * DSP-BIOS Bridge driver support functions for TI OMAP processors.

 *

 * Synchronization services.

 *

 * Copyright (C) 2005-2006 Texas Instruments, Inc.

 *

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

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

 * published by the Free Software Foundation.

 *

 * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED

 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

 */



/*  ----------------------------------- Host OS */

#include <dspbridge/host_os.h>



/*  ----------------------------------- This */

#include <dspbridge/sync.h>



DEFINE_SPINLOCK(sync_lock);



/**

 * sync_set_event() - set or signal and specified event

 * @event:	Event to be set..

 *

 * set the @event, if there is an thread waiting for the event

 * it will be waken up, this function only wakes one thread.

 */



void sync_set_event(struct sync_object *event)

{

	spin_lock_bh(&sync_lock);

	complete(&event->comp);

	if (event->multi_comp)

		complete(event->multi_comp);

	spin_unlock_bh(&sync_lock);

}



/**

 * sync_wait_on_multiple_events() - waits for multiple events to be set.

 * @events:	Array of events to wait for them.

 * @count:	number of elements of the array.

 * @timeout	timeout on waiting for the evetns.

 * @pu_index	index of the event set.

 *

 * This functios will wait until any of the array element is set or until

 * timeout. In case of success the function will return 0 and

 * @pu_index will store the index of the array element set or in case

 * of timeout the function will return -ETIME or in case of

 * interrupting by a signal it will return -EPERM.

 */



int sync_wait_on_multiple_events(struct sync_object **events,

				     unsigned count, unsigned timeout,

				     unsigned *index)

{

	unsigned i;

	int status = -EPERM;

	struct completion m_comp;



	init_completion(&m_comp);



	if (SYNC_INFINITE == timeout)

		timeout = MAX_SCHEDULE_TIMEOUT;



	spin_lock_bh(&sync_lock);

	for (i = 0; i < count; i++) {

		if (completion_done(&events[i]->comp)) {

			INIT_COMPLETION(events[i]->comp);

			*index = i;

			spin_unlock_bh(&sync_lock);

			status = 0;

			goto func_end;

		}

	}



	for (i = 0; i < count; i++)

		events[i]->multi_comp = &m_comp;



	spin_unlock_bh(&sync_lock);



	if (!wait_for_completion_interruptible_timeout(&m_comp,

					msecs_to_jiffies(timeout)))

		status = -ETIME;



	spin_lock_bh(&sync_lock);

	for (i = 0; i < count; i++) {

		if (completion_done(&events[i]->comp)) {

			INIT_COMPLETION(events[i]->comp);

			*index = i;

			status = 0;

		}

		events[i]->multi_comp = NULL;

	}

	spin_unlock_bh(&sync_lock);

func_end:

	return status;

}