staging: ti dspbridge: add resource manager

Add TI's DSP Bridge resource manager driver sources

Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com>
Signed-off-by: Kanigeri, Hari <h-kanigeri2@ti.com>
Signed-off-by: Ameya Palande <ameya.palande@nokia.com>
Signed-off-by: Guzman Lugo, Fernando <fernando.lugo@ti.com>
Signed-off-by: Hebbar, Shivananda <x0hebbar@ti.com>
Signed-off-by: Ramos Falcon, Ernesto <ernesto@ti.com>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Anna, Suman <s-anna@ti.com>
Signed-off-by: Gupta, Ramesh <grgupta@ti.com>
Signed-off-by: Gomez Castellanos, Ivan <ivan.gomez@ti.com>
Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@nokia.com>
Signed-off-by: Armando Uribe De Leon <x0095078@ti.com>
Signed-off-by: Deepak Chitriki <deepak.chitriki@ti.com>
Signed-off-by: Menon, Nishanth <nm@ti.com>
Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/tidspbridge/rmgr/drv_interface.h

@@ -0,0 +1,27 @@
+/*
+ * drv_interface.h
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * 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.
+ */
+
+#ifndef	_DRV_INTERFACE_H_
+#define _DRV_INTERFACE_H_
+
+/* Prototypes for all functions in this bridge */
+static int __init bridge_init(void);	/* Initialize bridge */
+static void __exit bridge_exit(void);	/* Opposite of initialize */
+static int bridge_open(struct inode *, struct file *);	/* Open */
+static int bridge_release(struct inode *, struct file *);	/* Release */
+static long bridge_ioctl(struct file *, unsigned int, unsigned long);
+static int bridge_mmap(struct file *filp, struct vm_area_struct *vma);
+#endif /* ifndef _DRV_INTERFACE_H_ */

drivers/staging/tidspbridge/rmgr/dspdrv.c

@@ -0,0 +1,142 @@
+/*
+ * dspdrv.c
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * Interface to allocate and free bridge resources.
+ *
+ * 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>
+
+/*  ----------------------------------- DSP/BIOS Bridge */
+#include <dspbridge/std.h>
+#include <dspbridge/dbdefs.h>
+
+/*  ----------------------------------- Trace & Debug */
+#include <dspbridge/dbc.h>
+
+/*  ----------------------------------- OS Adaptation Layer */
+#include <dspbridge/cfg.h>
+
+/*  ----------------------------------- Platform Manager */
+#include <dspbridge/drv.h>
+#include <dspbridge/dev.h>
+#include <dspbridge/dspapi.h>
+
+/*  ----------------------------------- Resource Manager */
+#include <dspbridge/mgr.h>
+
+/*  ----------------------------------- This */
+#include <dspbridge/dspdrv.h>
+
+/*
+ *  ======== dsp_init ========
+ *  	Allocates bridge resources. Loads a base image onto DSP, if specified.
+ */
+u32 dsp_init(OUT u32 *init_status)
+{
+	char dev_node[MAXREGPATHLENGTH] = "TIOMAP1510";
+	int status = -EPERM;
+	struct drv_object *drv_obj = NULL;
+	u32 device_node;
+	u32 device_node_string;
+
+	if (!api_init())
+		goto func_cont;
+
+	status = drv_create(&drv_obj);
+	if (DSP_FAILED(status)) {
+		api_exit();
+		goto func_cont;
+	}
+
+	/* End drv_create */
+	/* Request Resources */
+	status = drv_request_resources((u32) &dev_node, &device_node_string);
+	if (DSP_SUCCEEDED(status)) {
+		/* Attempt to Start the Device */
+		status = dev_start_device((struct cfg_devnode *)
+					  device_node_string);
+		if (DSP_FAILED(status))
+			(void)drv_release_resources
+			    ((u32) device_node_string, drv_obj);
+	} else {
+		dev_dbg(bridge, "%s: drv_request_resources Failed\n", __func__);
+		status = -EPERM;
+	}
+
+	/* Unwind whatever was loaded */
+	if (DSP_FAILED(status)) {
+		/* irrespective of the status of dev_remove_device we conitinue
+		 * unloading. Get the Driver Object iterate through and remove.
+		 * Reset the status to E_FAIL to avoid going through
+		 * api_init_complete2. */
+		for (device_node = drv_get_first_dev_extension();
+		     device_node != 0;
+		     device_node = drv_get_next_dev_extension(device_node)) {
+			(void)dev_remove_device((struct cfg_devnode *)
+						device_node);
+			(void)drv_release_resources((u32) device_node, drv_obj);
+		}
+		/* Remove the Driver Object */
+		(void)drv_destroy(drv_obj);
+		drv_obj = NULL;
+		api_exit();
+		dev_dbg(bridge, "%s: Logical device failed init\n", __func__);
+	}			/* Unwinding the loaded drivers */
+func_cont:
+	/* Attempt to Start the Board */
+	if (DSP_SUCCEEDED(status)) {
+		/* BRD_AutoStart could fail if the dsp execuetable is not the
+		 * correct one. We should not propagate that error
+		 * into the device loader. */
+		(void)api_init_complete2();
+	} else {
+		dev_dbg(bridge, "%s: Failed\n", __func__);
+	}			/* End api_init_complete2 */
+	DBC_ENSURE((DSP_SUCCEEDED(status) && drv_obj != NULL) ||
+		   (DSP_FAILED(status) && drv_obj == NULL));
+	*init_status = status;
+	/* Return the Driver Object */
+	return (u32) drv_obj;
+}
+
+/*
+ *  ======== dsp_deinit ========
+ *  	Frees the resources allocated for bridge.
+ */
+bool dsp_deinit(u32 deviceContext)
+{
+	bool ret = true;
+	u32 device_node;
+	struct mgr_object *mgr_obj = NULL;
+
+	while ((device_node = drv_get_first_dev_extension()) != 0) {
+		(void)dev_remove_device((struct cfg_devnode *)device_node);
+
+		(void)drv_release_resources((u32) device_node,
+					    (struct drv_object *)deviceContext);
+	}
+
+	(void)drv_destroy((struct drv_object *)deviceContext);
+
+	/* Get the Manager Object from Registry
+	 * MGR Destroy will unload the DCD dll */
+	if (DSP_SUCCEEDED(cfg_get_object((u32 *) &mgr_obj, REG_MGR_OBJECT)))
+		(void)mgr_destroy(mgr_obj);
+
+	api_exit();
+
+	return ret;
+}