diff options
Diffstat (limited to 'drivers/staging/tidspbridge/services/cfg.c')
| -rw-r--r-- | drivers/staging/tidspbridge/services/cfg.c | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/drivers/staging/tidspbridge/services/cfg.c b/drivers/staging/tidspbridge/services/cfg.c new file mode 100644 index 000000000000..a7af74f482dd --- /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. + */ + +#include <linux/types.h> + +/* ----------------------------------- DSP/BIOS Bridge */ +#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, + u32 *auto_start) +{ + int status = 0; + u32 dw_buf_size; + struct drv_data *drv_datap = dev_get_drvdata(bridge); + + dw_buf_size = sizeof(*auto_start); + if (!dev_node_obj) + status = -EFAULT; + if (!auto_start || !drv_datap) + status = -EFAULT; + if (!status) + *auto_start = (drv_datap->base_img) ? 1 : 0; + + DBC_ENSURE((status == 0 && + (*auto_start == 0 || *auto_start == 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, + u32 *value) +{ + 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 (!value) + status = -EFAULT; + + dw_buf_size = sizeof(value); + if (!status) { + + /* check the device string and then store dev object */ + if (! + (strcmp + ((char *)((struct drv_ext *)dev_node_obj)->sz_string, + "TIOMAP1510"))) + *value = (u32)drv_datap->dev_object; + } + if (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 buf_size, + char *str_exec_file) +{ + int status = 0; + struct drv_data *drv_datap = dev_get_drvdata(bridge); + + if (!dev_node_obj) + status = -EFAULT; + + else if (!str_exec_file || !drv_datap) + status = -EFAULT; + + if (strlen(drv_datap->base_img) > buf_size) + status = -EINVAL; + + if (!status && drv_datap->base_img) + strcpy(str_exec_file, drv_datap->base_img); + + if (status) + pr_err("%s: Failed, status 0x%x\n", __func__, status); + DBC_ENSURE(((status == 0) && + (strlen(str_exec_file) <= buf_size)) + || (status != 0)); + return status; +} + +/* + * ======== cfg_get_object ======== + * Purpose: + * Retrieve the Object handle from the Registry + */ +int cfg_get_object(u32 *value, u8 dw_type) +{ + int status = -EINVAL; + struct drv_data *drv_datap = dev_get_drvdata(bridge); + + DBC_REQUIRE(value != NULL); + + if (!drv_datap) + return -EPERM; + + switch (dw_type) { + case (REG_DRV_OBJECT): + if (drv_datap->drv_object) { + *value = (u32)drv_datap->drv_object; + status = 0; + } else { + status = -ENODATA; + } + break; + case (REG_MGR_OBJECT): + if (drv_datap->mgr_object) { + *value = (u32)drv_datap->mgr_object; + status = 0; + } else { + status = -ENODATA; + } + break; + + default: + break; + } + if (status) { + *value = 0; + pr_err("%s: Failed, status 0x%x\n", __func__, status); + } + DBC_ENSURE((!status && *value != 0) || (status && *value == 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 value) +{ + 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 (!status) { + /* Store the Bridge device object in the Registry */ + + if (!(strcmp((char *)dev_node_obj, "TIOMAP1510"))) + drv_datap->dev_object = (void *) value; + } + if (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 value, 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 *)value; + status = 0; + break; + case (REG_MGR_OBJECT): + drv_datap->mgr_object = (void *)value; + status = 0; + break; + default: + break; + } + if (status) + pr_err("%s: Failed, status 0x%x\n", __func__, status); + return status; +} |