Message-Id: <1277298125-17991-8-git-send-email-ohad@wizery.com>
Date:	Wed, 23 Jun 2010 16:02:01 +0300
From:	Ohad Ben-Cohen <ohad@...ery.com>
To:	Greg KH <greg@...ah.com>
Cc:	<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	Hebbar Shivananda <x0hebbar@...com>,
	Ramos Falcon Ernesto <ernesto@...com>,
	Anna Suman <s-anna@...com>, Kanigeri Hari <h-kanigeri2@...com>,
	Felipe Contreras <felipe.contreras@...il.com>,
	Felipe Balbi <felipe.balbi@...ia.com>,
	Hiroshi DOYU <Hiroshi.DOYU@...ia.com>,
	Gupta Ramesh <grgupta@...com>,
	Guzman Lugo Fernando <fernando.lugo@...com>,
	Tony Lindgren <tony@...mide.com>,
	Ameya Palande <ameya.palande@...ia.com>,
	Gomez Castellanos Ivan <ivan.gomez@...com>,
	Andy Shevchenko <ext-andriy.shevchenko@...ia.com>,
	Armando Uribe De Leon <x0095078@...com>,
	Deepak Chitriki <deepak.chitriki@...com>,
	Menon Nishanth <nm@...com>,
	Phil Carmody <ext-phil.2.carmody@...ia.com>,
	Pitney Gilbert <gpitney@...com>, Bhavin Shah <bshah@...com>,
	Omar Ramirez Luna <omar.ramirez@...com>,
	Ohad Ben-Cohen <ohad@...ery.com>
Subject: [PATCH 07/11] staging: ti dspbridge: add services

From: Omar Ramirez Luna <omar.ramirez@...com>

Add TI's DSP Bridge driver services code

Signed-off-by: Omar Ramirez Luna <omar.ramirez@...com>
Signed-off-by: Kanigeri, Hari <h-kanigeri2@...com>
Signed-off-by: Ameya Palande <ameya.palande@...ia.com>
Signed-off-by: Guzman Lugo, Fernando <fernando.lugo@...com>
Signed-off-by: Hebbar, Shivananda <x0hebbar@...com>
Signed-off-by: Ramos Falcon, Ernesto <ernesto@...com>
Signed-off-by: Felipe Contreras <felipe.contreras@...il.com>
Signed-off-by: Anna, Suman <s-anna@...com>
Signed-off-by: Gupta, Ramesh <grgupta@...com>
Signed-off-by: Gomez Castellanos, Ivan <ivan.gomez@...com>
Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@...ia.com>
Signed-off-by: Armando Uribe De Leon <x0095078@...com>
Signed-off-by: Deepak Chitriki <deepak.chitriki@...com>
Signed-off-by: Menon, Nishanth <nm@...com>
Signed-off-by: Phil Carmody <ext-phil.2.carmody@...ia.com>
Signed-off-by: Ohad Ben-Cohen <ohad@...ery.com>
---
 drivers/staging/tidspbridge/services/cfg.c      |  253 +++++++++++++++++++++++
 drivers/staging/tidspbridge/services/ntfy.c     |   31 +++
 drivers/staging/tidspbridge/services/services.c |   69 ++++++
 drivers/staging/tidspbridge/services/sync.c     |  104 +++++++++
 4 files changed, 457 insertions(+), 0 deletions(-)
 create mode 100644 drivers/staging/tidspbridge/services/cfg.c
 create mode 100644 drivers/staging/tidspbridge/services/ntfy.c
 create mode 100644 drivers/staging/tidspbridge/services/services.c
 create mode 100644 drivers/staging/tidspbridge/services/sync.c

diff --git a/drivers/staging/tidspbridge/services/cfg.c b/drivers/staging/tidspbridge/services/cfg.c
new file mode 100644
index 0000000..8ae64f4
--- /dev/null
+++ b/drivers/staging/tidspbridge/services/cfg.c
@@ -0,0 +1,253 @@
+/*
+ * 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;
+}
diff --git a/drivers/staging/tidspbridge/services/ntfy.c b/drivers/staging/tidspbridge/services/ntfy.c
new file mode 100644
index 0000000..a2ea698
--- /dev/null
+++ b/drivers/staging/tidspbridge/services/ntfy.c
@@ -0,0 +1,31 @@
+/*
+ * 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;
+}
+
diff --git a/drivers/staging/tidspbridge/services/services.c b/drivers/staging/tidspbridge/services/services.c
new file mode 100644
index 0000000..23be95c
--- /dev/null
+++ b/drivers/staging/tidspbridge/services/services.c
@@ -0,0 +1,69 @@
+/*
+ * 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;
+}
diff --git a/drivers/staging/tidspbridge/services/sync.c b/drivers/staging/tidspbridge/services/sync.c
new file mode 100644
index 0000000..9010b37
--- /dev/null
+++ b/drivers/staging/tidspbridge/services/sync.c
@@ -0,0 +1,104 @@
+/*
+ * 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;
+}
+
-- 
1.7.0.4

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