/*
* dbdcd.c
*
* DSP-BIOS Bridge driver support functions for TI OMAP processors.
*
* This file contains the implementation of the DSP/BIOS Bridge
* Configuration Database (DCD).
*
* Notes:
* The fxn dcd_get_objects can apply a callback fxn to each DCD object
* that is located in a specified COFF file. At the moment,
* dcd_auto_register, dcd_auto_unregister, and NLDR module all use
* dcd_get_objects.
*
* 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>
/* ----------------------------------- Host OS */
#include <dspbridge/host_os.h>
/* ----------------------------------- DSP/BIOS Bridge */
#include <dspbridge/dbdefs.h>
/* ----------------------------------- Trace & Debug */
#include <dspbridge/dbc.h>
/* ----------------------------------- Platform Manager */
#include <dspbridge/cod.h>
/* ----------------------------------- Others */
#include <dspbridge/uuidutil.h>
/* ----------------------------------- This */
#include <dspbridge/dbdcd.h>
/* ----------------------------------- Global defines. */
#define MAX_INT2CHAR_LENGTH 16 /* Max int2char len of 32 bit int */
/* Name of section containing dependent libraries */
#define DEPLIBSECT ".dspbridge_deplibs"
/* DCD specific structures. */
struct dcd_manager {
struct cod_manager *cod_mgr; /* Handle to COD manager object. */
};
/* Pointer to the registry support key */
static struct list_head reg_key_list;
static DEFINE_SPINLOCK(dbdcd_lock);
/* Global reference variables. */
static u32 refs;
static u32 enum_refs;
/* Helper function prototypes. */
static s32 atoi(char *psz_buf);
static int get_attrs_from_buf(char *psz_buf, u32 ul_buf_size,
enum dsp_dcdobjtype obj_type,
struct dcd_genericobj *gen_obj);
static void compress_buf(char *psz_buf, u32 ul_buf_size, s32 char_size);
static char dsp_char2_gpp_char(char *word, s32 dsp_char_size);
static int get_dep_lib_info(struct dcd_manager *hdcd_mgr,
struct dsp_uuid *uuid_obj,
u16 *num_libs,
u16 *num_pers_libs,
struct dsp_uuid *dep_lib_uuids,
bool *prstnt_dep_libs,
enum nldr_phase phase);
/*
* ======== dcd_auto_register ========
* Purpose:
* Parses the supplied image and resigsters with DCD.
*/
int dcd_auto_register(struct dcd_manager *hdcd_mgr,
char *sz_coff_path)
{
int status = 0;
DBC_REQUIRE(refs > 0);
if (hdcd_mgr)
status = dcd_get_objects(hdcd_mgr, sz_coff_path,
(dcd_registerfxn) dcd_register_object,
(void *)sz_coff_path);
else
status = -EFAULT;
return status;
}
/*
* ======== dcd_auto_unregister ========
* Purpose:
* Parses the supplied DSP image and unresiters from DCD.
*/
int dcd_auto_unregister(struct dcd_manager *hdcd_mgr,
char *sz_coff_path)
{
int status = 0;
DBC_REQUIRE(refs > 0);
if (hdcd_mgr)
status = dcd_get_objects(hdcd_mgr, sz_coff_path,
(dcd_registerfxn) dcd_register_object,
NULL);
else
status = -EFAULT;
return status;
}
/*
* ======== dcd_create_manager ========
* Purpose:
* Creates DCD manager.
*/
int dcd_create_manager(char *sz_zl_dll_name,
struct dcd_manager **dcd_mgr)
{
struct cod_manager *cod_mgr; /* COD manager handle */
struct dcd_manager *dcd_mgr_obj = NULL; /* DCD Manager pointer */
int status = 0;
DBC_REQUIRE(refs >= 0);
DBC_REQUIRE(dcd_mgr);
status = cod_create(&cod_mgr, sz_zl_dll_name);
if (status)
goto func_end;
/* Create a DCD object. */
dcd_mgr_obj = kzalloc(sizeof(struct dcd_manager), GFP_KERNEL);
if (dcd_mgr_obj != NULL) {
/* Fill out the object. */
dcd_mgr_obj->cod_mgr = cod_mgr;
/* Return handle to this DCD interface. */
*dcd_mgr = dcd_mgr_obj;
} else {
status = -ENOMEM;
/*
* If allocation of DcdManager object failed, delete the
* COD manager.
*/
cod_delete(cod_mgr);
}
DBC_ENSURE((!status) ||
((dcd_mgr_obj == NULL) && (status == -ENOMEM)));
func_end:
return status;
}
/*
* ======== dcd_destroy_manager ========
* Purpose:
* Frees DCD Manager object.
*/
int dcd_destroy_manager(struct dcd_manager *hdcd_mgr)
{
struct dcd_manager *dcd_mgr_obj = hdcd_mgr;
int status = -EFAULT;
DBC_REQUIRE(refs >= 0);
if (hdcd_mgr) {
/* Delete the COD manager. */
cod_delete(dcd_mgr_obj->cod_mgr);
/* Deallocate a DCD manager object. */
kfree(dcd_mgr_obj);
status = 0;
}
return status;
}
/*
* ======== dcd_enumerate_object ========
* Purpose:
* Enumerates objects in the DCD.
*/
int dcd_enumerate_object(s32 index, enum dsp_dcdobjtype obj_type,
struct dsp_uuid *uuid_obj)
{
int status = 0;
char sz_reg_key[DCD_MAXPATHLENGTH];
char sz_value[DCD_MAXPATHLENGTH];
struct dsp_uuid dsp_uuid_obj;
char sz_obj_type[MAX_INT2CHAR_LENGTH]; /* str. rep. of obj_type. */
u32 dw_key_len = 0;
struct dcd_key_elem *dcd_key;
int len;
DBC_REQUIRE(refs >= 0);
DBC_REQUIRE(index >= 0);
DBC_REQUIRE(uuid_obj != NULL);
if ((index != 0) && (enum_refs == 0)) {
/*
* If an enumeration is being performed on an index greater
* than zero, then the current enum_refs must have been
* incremented to greater than zero.
*/
status = -EIDRM;
} else {
/*
* Pre-determine final key length. It's length of DCD_REGKEY +
* "_\0" + length of sz_obj_type string + terminating NULL.
*/
dw_key_len = strlen(DCD_REGKEY) + 1 + sizeof(sz_obj_type) + 1;
DBC_ASSERT(dw_key_len < DCD_MAXPATHLENGTH);
/* Create proper REG key; concatenate DCD_REGKEY with
* obj_type. */
strncpy(sz_reg_key, DCD_REGKEY, strlen(DCD_REGKEY) + 1);
if ((strlen(sz_reg_key) + strlen("_\0")) <
DCD_MAXPATHLENGTH) {
strncat(sz_reg_key, "_\0", 2);
} else {
status = -EPERM;
}
/* This snprintf is guaranteed not to exceed max size of an
* integer. */
status = snprintf(sz_obj_type, MAX_INT2CHAR_LENGTH, "%d",
obj_type);
if (status == -1) {
status = -EPERM;
} else {
status = 0;
if ((strlen(sz_reg_key) + strlen(sz_obj_type)) <
DCD_MAXPATHLENGTH) {
strncat(sz_reg_key, sz_obj_type,
strlen(sz_obj_type) + 1);
} else {
status = -EPERM;
}
}
if (!status) {
len = strlen(sz_reg_key);
spin_lock(&dbdcd_lock);
list_for_each_entry(dcd_key, ®_key_list, link) {
if (!strncmp(dcd_key->name, sz_reg_key, len)
&& !index--) {
strncpy(sz_value, &dcd_key->name[len],
strlen(&dcd_key->name[len]) + 1);
break;
}
}
spin_unlock(&dbdcd_lock);
if (&dcd_key->link == ®_key_list)
status = -ENODATA;
}
if (!status) {
/* Create UUID value using string retrieved from
* registry. */
uuid_uuid_from_string(sz_value, &dsp_uuid_obj);
*uuid_obj = dsp_uuid_obj;
/* Increment enum_refs to update reference count. */
enum_refs++;
status = 0;
} else if (status == -ENODATA) {
/* At the end of enumeration. Reset enum_refs. */
enum_refs = 0;
/*
* TODO: Revisit, this is not an errror case but code
* expects non-zero value.
*/
status = ENODATA;
} else {
status = -EPERM;
}
}
DBC_ENSURE(uuid_obj || (status == -EPERM));
return status;
}
/*
* ======== dcd_exit ========
* Purpose:
* Discontinue usage of the DCD module.
*/
void dcd_exit(void)
{
struct dcd_key_elem *rv, *rv_tmp;
DBC_REQUIRE(refs > 0);
refs--;
if (refs == 0) {
cod_exit();
list_for_each_entry_safe(rv, rv_tmp, ®_key_list, link) {
list_del(&rv->link);
kfree(rv->path);
kfree(rv);
}
}
DBC_ENSURE(refs >= 0);
}
/*
* ======== dcd_get_dep_libs ========
*/
int dcd_get_dep_libs(struct dcd_manager *hdcd_mgr,
struct dsp_uuid *uuid_obj,
u16 num_libs, struct dsp_uuid *dep_lib_uuids,
bool *prstnt_dep_libs,
enum nldr_phase phase)
{
int status = 0;
DBC_REQUIRE(refs > 0);
DBC_REQUIRE(hdcd_mgr);
DBC_REQUIRE(uuid_obj != NULL);
DBC_REQUIRE(dep_lib_uuids != NULL);
DBC_REQUIRE(prstnt_dep_libs != NULL);
status =
get_dep_lib_info(hdcd_mgr, uuid_obj, &num_libs, NULL, dep_lib_uuids,
prstnt_dep_libs, phase);
return status;
}
/*
* ======== dcd_get_num_dep_libs ========
*/
int dcd_get_num_dep_libs(struct dcd_manager *hdcd_mgr,
struct dsp_uuid *uuid_obj,
u16 *num_libs, u16 *num_pers_libs,
enum nldr_phase phase)
{
int status = 0;
DBC_REQUIRE(refs > 0);
DBC_REQUIRE(hdcd_mgr);
DBC_REQUIRE(num_libs != NULL);
DBC_REQUIRE(num_pers_libs != NULL);
DBC_REQUIRE(uuid_obj != NULL);
status = get_dep_lib_info(hdcd_mgr, uuid_obj, num_libs, num_pers_libs,
NULL, NULL, phase);
return status;
}
/*
* ======== dcd_get_object_def ========
* Purpose:
* Retrieves the properties of a node or processor based on the UUID and
* object type.
*/
int dcd_get_object_def(struct dcd_manager *hdcd_mgr,
struct dsp_uuid *obj_uuid,
enum dsp_dcdobjtype obj_type,
struct dcd_genericobj *obj_def)
{
struct dcd_manager *dcd_mgr_obj = hdcd_mgr; /* ptr to DCD mgr */
struct cod_libraryobj *lib = NULL;
int status = 0;
u32 ul_addr = 0; /* Used by cod_get_section */
u32 ul_len = 0; /* Used by cod_get_section */
u32 dw_buf_size; /* Used by REG functions */
char sz_reg_key[DCD_MAXPATHLENGTH];
char *sz_uuid; /*[MAXUUIDLEN]; */
struct dcd_key_elem *dcd_key = NULL;
char sz_sect_name[MAXUUIDLEN + 2]; /* ".[UUID]\0" */
char *psz_coff_buf;
u32 dw_key_len; /* Len of REG key. */
char sz_obj_type[MAX_INT2CHAR_LENGTH]; /* str. rep. of obj_type. */
DBC_REQUIRE(refs > 0);
DBC_REQUIRE(obj_def != NULL);
DBC_REQUIRE(obj_uuid != NULL);
sz_uuid = kzalloc(MAXUUIDLEN, GFP_KERNEL);
if (!sz_uuid) {
status = -ENOMEM;
goto func_end;
}
if (!hdcd_mgr) {
status = -EFAULT;
goto func_end;
}
/* Pre-determine final key length. It's length of DCD_REGKEY +
* "_\0" + length of sz_obj_type string + terminating NULL */
dw_key_len = strlen(DCD_REGKEY) + 1 + sizeof(sz_obj_type) + 1;
DBC_ASSERT(dw_key_len < DCD_MAXPATHLENGTH);
/* Create proper REG key; concatenate DCD_REGKEY with obj_type. */
strncpy(sz_reg_key, DCD_REGKEY, strlen(DCD_REGKEY) + 1);
if ((strlen(sz_reg_key) + strlen("_\0")) < DCD_MAXPATHLENGTH)
strncat(sz_reg_key, "_\0", 2);
else
status = -EPERM;
status = snprintf(sz_obj_type, MAX_INT2CHAR_LENGTH, "%d", obj_type);
if (status == -1) {
status = -EPERM;
} else {
status = 0;
if ((strlen(sz_reg_key) + strlen(sz_obj_type)) <
DCD_MAXPATHLENGTH) {
strncat(sz_reg_key, sz_obj_type,
strlen(sz_obj_type) + 1);
} else {
status = -EPERM;
}
/* Create UUID value to set in registry. */
uuid_uuid_to_string(obj_uuid, sz_uuid, MAXUUIDLEN);
if ((strlen(sz_reg_key) + MAXUUIDLEN) < DCD_MAXPATHLENGTH)
strncat(sz_reg_key, sz_uuid, MAXUUIDLEN);
else
status = -EPERM;
/* Retrieve paths from the registry based on struct dsp_uuid */
dw_buf_size = DCD_MAXPATHLENGTH;
}
if (!status) {
spin_lock(&dbdcd_lock);
list_for_each_entry(dcd_key, ®_key_list, link) {
if (!strncmp(dcd_key->name, sz_reg_key,
strlen(sz_reg_key) + 1))
break;
}
spin_unlock(&dbdcd_lock);
if (&dcd_key->link == ®_key_list) {
status = -ENOKEY;
goto func_end;
}
}
/* Open COFF file. */
status = cod_open(dcd_mgr_obj->cod_mgr, dcd_key->path,
COD_NOLOAD, &lib);
if (status) {
status = -EACCES;
goto func_end;
}
/* Ensure sz_uuid + 1 is not greater than sizeof sz_sect_name. */
DBC_ASSERT((strlen(sz_uuid) + 1) < sizeof(sz_sect_name));
/* Create section name based on node UUID. A period is
* pre-pended to the UUID string to form the section name.
* I.e. ".24BC8D90_BB45_11d4_B756_006008BDB66F" */
strncpy(sz_sect_name, ".", 2);
strncat(sz_sect_name, sz_uuid, strlen(sz_uuid));
/* Get section information. */
status = cod_get_section(lib, sz_sect_name, &ul_addr, &ul_len);
if (status) {
status = -EACCES;
goto func_end;
}
/* Allocate zeroed buffer. */
psz_coff_buf = kzalloc(ul_len + 4, GFP_KERNEL);
if (psz_coff_buf == NULL) {
status = -ENOMEM;
goto func_end;
}
#ifdef _DB_TIOMAP
if (strstr(dcd_key->path, "iva") == NULL) {
/* Locate section by objectID and read its content. */
status =
cod_read_section(lib, sz_sect_name, psz_coff_buf, ul_len);
} else {
status =
cod_read_section(lib, sz_sect_name, psz_coff_buf, ul_len);
dev_dbg(bridge, "%s: Skipped Byte swap for IVA!!\n", __func__);
}
#else
status = cod_read_section(lib, sz_sect_name, psz_coff_buf, ul_len);
#endif
if (!status) {
/* Compres DSP buffer to conform to PC format. */
if (strstr(dcd_key->path, "iva") == NULL) {
compress_buf(psz_coff_buf, ul_len, DSPWORDSIZE);
} else {
compress_buf(psz_coff_buf, ul_len, 1);
dev_dbg(bridge, "%s: Compressing IVA COFF buffer by 1 "
"for IVA!!\n", __func__);
}
/* Parse the content of the COFF buffer. */
status =
get_attrs_from_buf(psz_coff_buf, ul_len, obj_type, obj_def);
if (status)
status = -EACCES;
} else {
status = -EACCES;
}
/* Free the previously allocated dynamic buffer. */
kfree(psz_coff_buf);
func_end:
if (lib)
cod_close(lib);
kfree(sz_uuid);
return status;
}
/*
* ======== dcd_get_objects ========
*/
int dcd_get_objects(struct dcd_manager *hdcd_mgr,
char *sz_coff_path, dcd_registerfxn register_fxn,
void *handle)
{
struct dcd_manager *dcd_mgr_obj = hdcd_mgr;
int status = 0;
char *psz_coff_buf;
char *psz_cur;
struct cod_libraryobj *lib = NULL;
u32 ul_addr = 0; /* Used by cod_get_section */
u32 ul_len = 0; /* Used by cod_get_section */
char seps[] = ":, ";
char *token = NULL;
struct dsp_uuid dsp_uuid_obj;
s32 object_type;
DBC_REQUIRE(refs > 0);
if (!hdcd_mgr) {
status = -EFAULT;
goto func_end;
}
/* Open DSP coff file, don't load symbols. */
status = cod_open(dcd_mgr_obj->cod_mgr, sz_coff_path, COD_NOLOAD, &lib);
if (status) {
status = -EACCES;
goto func_cont;
}
/* Get DCD_RESIGER_SECTION section information. */
status = cod_get_section(lib, DCD_REGISTER_SECTION, &ul_addr, &ul_len);
if (status || !(ul_len > 0)) {
status = -EACCES;
goto func_cont;
}
/* Allocate zeroed buffer. */
psz_coff_buf = kzalloc(ul_len + 4, GFP_KERNEL);
if (psz_coff_buf == NULL) {
status = -ENOMEM;
goto func_cont;
}
#ifdef _DB_TIOMAP
if (strstr(sz_coff_path, "iva") == NULL) {
/* Locate section by objectID and read its content. */
status = cod_read_section(lib, DCD_REGISTER_SECTION,
psz_coff_buf, ul_len);
} else {
dev_dbg(bridge, "%s: Skipped Byte swap for IVA!!\n", __func__);
status = cod_read_section(lib, DCD_REGISTER_SECTION,
psz_coff_buf, ul_len);
}
#else
status =
cod_read_section(lib, DCD_REGISTER_SECTION, psz_coff_buf, ul_len);
#endif
if (!status) {
/* Compress DSP buffer to conform to PC format. */
if (strstr(sz_coff_path, "iva") == NULL) {
compress_buf(psz_coff_buf, ul_len, DSPWORDSIZE);
} else {
compress_buf(psz_coff_buf, ul_len, 1);
dev_dbg(bridge, "%s: Compress COFF buffer with 1 word "
"for IVA!!\n", __func__);
}
/* Read from buffer and register object in buffer. */
psz_cur = psz_coff_buf;
while ((token = strsep(&psz_cur, seps)) && *token != '\0') {
/* Retrieve UUID string. */
uuid_uuid_from_string(token, &dsp_uuid_obj);
/* Retrieve object type */
token = strsep(&psz_cur, seps);
/* Retrieve object type */
object_type = atoi(token);
/*
* Apply register_fxn to the found DCD object.
* Possible actions include:
*
* 1) Register found DCD object.
* 2) Unregister found DCD object (when handle == NULL)
* 3) Add overlay node.
*/
status =
register_fxn(&dsp_uuid_obj, object_type, handle);
if (status) {
/* if error occurs, break from while loop. */
break;
}
}
} else {
status = -EACCES;
}
/* Free the previously allocated dynamic buffer. */
kfree(psz_coff_buf);
func_cont:
if (lib)
cod_close(lib);
func_end:
return status;
}
/*
* ======== dcd_get_library_name ========
* Purpose:
* Retrieves the library name for the given UUID.
*
*/
int dcd_get_library_name(struct dcd_manager *hdcd_mgr,
struct dsp_uuid *uuid_obj,
char *str_lib_name,
u32 *buff_size,
enum nldr_phase phase, bool *phase_split)
{
char sz_reg_key[DCD_MAXPATHLENGTH];
char sz_uuid[MAXUUIDLEN];
u32 dw_key_len; /* Len of REG key. */
char sz_obj_type[MAX_INT2CHAR_LENGTH]; /* str. rep. of obj_type. */
int status = 0;
struct dcd_key_elem *dcd_key = NULL;
DBC_REQUIRE(uuid_obj != NULL);
DBC_REQUIRE(str_lib_name != NULL);
DBC_REQUIRE(buff_size != NULL);
DBC_REQUIRE(hdcd_mgr);
dev_dbg(bridge, "%s: hdcd_mgr %p, uuid_obj %p, str_lib_name %p,"
" buff_size %p\n", __func__, hdcd_mgr, uuid_obj, str_lib_name,
buff_size);
/*
* Pre-determine final key length. It's length of DCD_REGKEY +
* "_\0" + length of sz_obj_type string + terminating NULL.
*/
dw_key_len = strlen(DCD_REGKEY) + 1 + sizeof(sz_obj_type) + 1;
DBC_ASSERT(dw_key_len < DCD_MAXPATHLENGTH);
/* Create proper REG key; concatenate DCD_REGKEY with obj_type. */
strncpy(sz_reg_key, DCD_REGKEY, strlen(DCD_REGKEY) + 1);
if ((strlen(sz_reg_key) + strlen("_\0")) < DCD_MAXPATHLENGTH)
strncat(sz_reg_key, "_\0", 2);
else
status = -EPERM;
switch (phase) {
case NLDR_CREATE:
/* create phase type */
sprintf(sz_obj_type, "%d", DSP_DCDCREATELIBTYPE);
break;
case NLDR_EXECUTE:
/* execute phase type */
sprintf(sz_obj_type, "%d", DSP_DCDEXECUTELIBTYPE);
break;
case NLDR_DELETE:
/* delete phase type */
sprintf(sz_obj_type, "%d", DSP_DCDDELETELIBTYPE);
break;
case NLDR_NOPHASE:
/* known to be a dependent library */
sprintf(sz_obj_type, "%d", DSP_DCDLIBRARYTYPE);
break;
default:
status = -EINVAL;
DBC_ASSERT(false);
}
if (!status) {
if ((strlen(sz_reg_key) + strlen(sz_obj_type)) <
DCD_MAXPATHLENGTH) {
strncat(sz_reg_key, sz_obj_type,
strlen(sz_obj_type) + 1);
} else {
status = -EPERM;
}
/* Create UUID value to find match in registry. */
uuid_uuid_to_string(uuid_obj, sz_uuid, MAXUUIDLEN);
if ((strlen(sz_reg_key) + MAXUUIDLEN) < DCD_MAXPATHLENGTH)
strncat(sz_reg_key, sz_uuid, MAXUUIDLEN);
else
status = -EPERM;
}
if (!status) {
spin_lock(&dbdcd_lock);
list_for_each_entry(dcd_key, ®_key_list, link) {
/* See if the name matches. */
if (!strncmp(dcd_key->name, sz_reg_key,
strlen(sz_reg_key) + 1))
break;
}
spin_unlock(&dbdcd_lock);
}
if (&dcd_key->link == ®_key_list)
status = -ENOKEY;
/* If can't find, phases might be registered as generic LIBRARYTYPE */
if (status && phase != NLDR_NOPHASE) {
if (phase_split)
*phase_split = false;
strncpy(sz_reg_key, DCD_REGKEY, strlen(DCD_REGKEY) + 1);
if ((strlen(sz_reg_key) + strlen("_\0")) <
DCD_MAXPATHLENGTH) {
strncat(sz_reg_key, "_\0", 2);
} else {
status = -EPERM;
}
sprintf(sz_obj_type, "%d", DSP_DCDLIBRARYTYPE);
if ((strlen(sz_reg_key) + strlen(sz_obj_type))
< DCD_MAXPATHLENGTH) {
strncat(sz_reg_key, sz_obj_type,
strlen(sz_obj_type) + 1);
} else {
status = -EPERM;
}
uuid_uuid_to_string(uuid_obj, sz_uuid, MAXUUIDLEN);
if ((strlen(sz_reg_key) + MAXUUIDLEN) < DCD_MAXPATHLENGTH)
strncat(sz_reg_key, sz_uuid, MAXUUIDLEN);
else
status = -EPERM;
spin_lock(&dbdcd_lock);
list_for_each_entry(dcd_key, ®_key_list, link) {
/* See if the name matches. */
if (!strncmp(dcd_key->name, sz_reg_key,
strlen(sz_reg_key) + 1))
break;
}
spin_unlock(&dbdcd_lock);
status = (&dcd_key->link != ®_key_list) ?
0 : -ENOKEY;
}
if (!status)
memcpy(str_lib_name, dcd_key->path, strlen(dcd_key->path) + 1);
return status;
}
/*
* ======== dcd_init ========
* Purpose:
* Initialize the DCD module.
*/
bool dcd_init(void)
{
bool init_cod;
bool ret = true;
DBC_REQUIRE(refs >= 0);
if (refs == 0) {
/* Initialize required modules. */
init_cod = cod_init();
if (!init_cod) {
ret = false;
/* Exit initialized modules. */
if (init_cod)
cod_exit();
}
INIT_LIST_HEAD(®_key_list);
}
if (ret)
refs++;
DBC_ENSURE((ret && (refs > 0)) || (!ret && (refs == 0)));
return ret;
}
/*
* ======== dcd_register_object ========
* Purpose:
* Registers a node or a processor with the DCD.
* If psz_path_name == NULL, unregister the specified DCD object.
*/
int dcd_register_object(struct dsp_uuid *uuid_obj,
enum dsp_dcdobjtype obj_type,
char *psz_path_name)
{
int status = 0;
char sz_reg_key[DCD_MAXPATHLENGTH];
char sz_uuid[MAXUUIDLEN + 1];
u32 dw_path_size = 0;
u32 dw_key_len; /* Len of REG key. */
char sz_obj_type[MAX_INT2CHAR_LENGTH]; /* str. rep. of obj_type. */
struct dcd_key_elem *dcd_key = NULL;
DBC_REQUIRE(refs > 0);
DBC_REQUIRE(uuid_obj != NULL);
DBC_REQUIRE((obj_type == DSP_DCDNODETYPE) ||
(obj_type == DSP_DCDPROCESSORTYPE) ||
(obj_type == DSP_DCDLIBRARYTYPE) ||
(obj_type == DSP_DCDCREATELIBTYPE) ||
(obj_type == DSP_DCDEXECUTELIBTYPE) ||
(obj_type == DSP_DCDDELETELIBTYPE));
dev_dbg(bridge, "%s: object UUID %p, obj_type %d, szPathName %s\n",
__func__, uuid_obj, obj_type, psz_path_name);
/*
* Pre-determine final key length. It's length of DCD_REGKEY +
* "_\0" + length of sz_obj_type string + terminating NULL.
*/
dw_key_len = strlen(DCD_REGKEY) + 1 + sizeof(sz_obj_type) + 1;
DBC_ASSERT(dw_key_len < DCD_MAXPATHLENGTH);
/* Create proper REG key; concatenate DCD_REGKEY with obj_type. */
strncpy(sz_reg_key, DCD_REGKEY, strlen(DCD_REGKEY) + 1);
if ((strlen(sz_reg_key) + strlen("_\0")) < DCD_MAXPATHLENGTH)
strncat(sz_reg_key, "_\0", 2);
else {
status = -EPERM;
goto func_end;
}
status = snprintf(sz_obj_type, MAX_INT2CHAR_LENGTH, "%d", obj_type);
if (status == -1) {
status = -EPERM;
} else {
status = 0;
if ((strlen(sz_reg_key) + strlen(sz_obj_type)) <
DCD_MAXPATHLENGTH) {
strncat(sz_reg_key, sz_obj_type,
strlen(sz_obj_type) + 1);
} else
status = -EPERM;
/* Create UUID value to set in registry. */
uuid_uuid_to_string(uuid_obj, sz_uuid, MAXUUIDLEN);
if ((strlen(sz_reg_key) + MAXUUIDLEN) < DCD_MAXPATHLENGTH)
strncat(sz_reg_key, sz_uuid, MAXUUIDLEN);
else
status = -EPERM;
}
if (status)
goto func_end;
/*
* If psz_path_name != NULL, perform registration, otherwise,
* perform unregistration.
*/
if (psz_path_name) {
dw_path_size = strlen(psz_path_name) + 1;
spin_lock(&dbdcd_lock);
list_for_each_entry(dcd_key, ®_key_list, link) {
/* See if the name matches. */
if (!strncmp(dcd_key->name, sz_reg_key,
strlen(sz_reg_key) + 1))
break;
}
spin_unlock(&dbdcd_lock);
if (&dcd_key->link == ®_key_list) {
/*
* Add new reg value (UUID+obj_type)
* with COFF path info
*/
dcd_key = kmalloc(sizeof(struct dcd_key_elem),
GFP_KERNEL);
if (!dcd_key) {
status = -ENOMEM;
goto func_end;
}
dcd_key->path = kmalloc(strlen(sz_reg_key) + 1,
GFP_KERNEL);
if (!dcd_key->path) {
kfree(dcd_key);
status = -ENOMEM;
goto func_end;
}
strncpy(dcd_key->name, sz_reg_key,
strlen(sz_reg_key) + 1);
strncpy(dcd_key->path, psz_path_name ,
dw_path_size);
spin_lock(&dbdcd_lock);
list_add_tail(&dcd_key->link, ®_key_list);
spin_unlock(&dbdcd_lock);
} else {
/* Make sure the new data is the same. */
if (strncmp(dcd_key->path, psz_path_name,
dw_path_size)) {
/* The caller needs a different data size! */
kfree(dcd_key->path);
dcd_key->path = kmalloc(dw_path_size,
GFP_KERNEL);
if (dcd_key->path == NULL) {
status = -ENOMEM;
goto func_end;
}
}
/* We have a match! Copy out the data. */
memcpy(dcd_key->path, psz_path_name, dw_path_size);
}
dev_dbg(bridge, "%s: psz_path_name=%s, dw_path_size=%d\n",
__func__, psz_path_name, dw_path_size);
} else {
/* Deregister an existing object */
spin_lock(&dbdcd_lock);
list_for_each_entry(dcd_key, ®_key_list, link) {
if (!strncmp(dcd_key->name, sz_reg_key,
strlen(sz_reg_key) + 1)) {
list_del(&dcd_key->link);
kfree(dcd_key->path);
kfree(dcd_key);
break;
}
}
spin_unlock(&dbdcd_lock);
if (&dcd_key->link == ®_key_list)
status = -EPERM;
}
if (!status) {
/*
* Because the node database has been updated through a
* successful object registration/de-registration operation,
* we need to reset the object enumeration counter to allow
* current enumerations to reflect this update in the node
* database.
*/
enum_refs = 0;
}
func_end:
return status;
}
/*
* ======== dcd_unregister_object ========
* Call DCD_Register object with psz_path_name set to NULL to
* perform actual object de-registration.
*/
int dcd_unregister_object(struct dsp_uuid *uuid_obj,
enum dsp_dcdobjtype obj_type)
{
int status = 0;
DBC_REQUIRE(refs > 0);
DBC_REQUIRE(uuid_obj != NULL);
DBC_REQUIRE((obj_type == DSP_DCDNODETYPE) ||
(obj_type == DSP_DCDPROCESSORTYPE) ||
(obj_type == DSP_DCDLIBRARYTYPE) ||
(obj_type == DSP_DCDCREATELIBTYPE) ||
(obj_type == DSP_DCDEXECUTELIBTYPE) ||
(obj_type == DSP_DCDDELETELIBTYPE));
/*
* When dcd_register_object is called with NULL as pathname,
* it indicates an unregister object operation.
*/
status = dcd_register_object(uuid_obj, obj_type, NULL);
return status;
}
/*
**********************************************************************
* DCD Helper Functions
**********************************************************************
*/
/*
* ======== atoi ========
* Purpose:
* This function converts strings in decimal or hex format to integers.
*/
static s32 atoi(char *psz_buf)
{
char *pch = psz_buf;
s32 base = 0;
while (isspace(*pch))
pch++;
if (*pch == '-' || *pch == '+') {
base = 10;
pch++;
} else if (*pch && tolower(pch[strlen(pch) - 1]) == 'h') {
base = 16;
}
return simple_strtoul(pch, NULL, base);
}
/*
* ======== get_attrs_from_buf ========
* Purpose:
* Parse the content of a buffer filled with DSP-side data and
* retrieve an object's attributes from it. IMPORTANT: Assume the
* buffer has been converted from DSP format to GPP format.
*/
static int get_attrs_from_buf(char *psz_buf, u32 ul_buf_size,
enum dsp_dcdobjtype obj_type,
struct dcd_genericobj *gen_obj)
{
int status = 0;
char seps[] = ", ";
char *psz_cur;
char *token;
s32 token_len = 0;
u32 i = 0;
#ifdef _DB_TIOMAP
s32 entry_id;
#endif
DBC_REQUIRE(psz_buf != NULL);
DBC_REQUIRE(ul_buf_size != 0);
DBC_REQUIRE((obj_type == DSP_DCDNODETYPE)
|| (obj_type == DSP_DCDPROCESSORTYPE));
DBC_REQUIRE(gen_obj != NULL);
switch (obj_type) {
case DSP_DCDNODETYPE:
/*
* Parse COFF sect buffer to retrieve individual tokens used
* to fill in object attrs.
*/
psz_cur = psz_buf;
token = strsep(&psz_cur, seps);
/* u32 cb_struct */
gen_obj->obj_data.node_obj.ndb_props.cb_struct =
(u32) atoi(token);
token = strsep(&psz_cur, seps);
/* dsp_uuid ui_node_id */
uuid_uuid_from_string(token,
&gen_obj->obj_data.node_obj.ndb_props.
ui_node_id);
token = strsep(&psz_cur, seps);
/* ac_name */
DBC_REQUIRE(token);
token_len = strlen(token);
if (token_len > DSP_MAXNAMELEN - 1)
token_len = DSP_MAXNAMELEN - 1;
strncpy(gen_obj->obj_data.node_obj.ndb_props.ac_name,
token, token_len);
gen_obj->obj_data.node_obj.ndb_props.ac_name[token_len] = '\0';
token = strsep(&psz_cur, seps);
/* u32 ntype */
gen_obj->obj_data.node_obj.ndb_props.ntype = atoi(token);
token = strsep(&psz_cur, seps);
/* u32 cache_on_gpp */
gen_obj->obj_data.node_obj.ndb_props.cache_on_gpp = atoi(token);
token = strsep(&psz_cur, seps);
/* dsp_resourcereqmts dsp_resource_reqmts */
gen_obj->obj_data.node_obj.ndb_props.dsp_resource_reqmts.
cb_struct = (u32) atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.node_obj.ndb_props.
dsp_resource_reqmts.static_data_size = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.node_obj.ndb_props.
dsp_resource_reqmts.global_data_size = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.node_obj.ndb_props.
dsp_resource_reqmts.program_mem_size = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.node_obj.ndb_props.
dsp_resource_reqmts.wc_execution_time = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.node_obj.ndb_props.
dsp_resource_reqmts.wc_period = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.node_obj.ndb_props.
dsp_resource_reqmts.wc_deadline = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.node_obj.ndb_props.
dsp_resource_reqmts.avg_exection_time = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.node_obj.ndb_props.
dsp_resource_reqmts.minimum_period = atoi(token);
token = strsep(&psz_cur, seps);
/* s32 prio */
gen_obj->obj_data.node_obj.ndb_props.prio = atoi(token);
token = strsep(&psz_cur, seps);
/* u32 stack_size */
gen_obj->obj_data.node_obj.ndb_props.stack_size = atoi(token);
token = strsep(&psz_cur, seps);
/* u32 sys_stack_size */
gen_obj->obj_data.node_obj.ndb_props.sys_stack_size =
atoi(token);
token = strsep(&psz_cur, seps);
/* u32 stack_seg */
gen_obj->obj_data.node_obj.ndb_props.stack_seg = atoi(token);
token = strsep(&psz_cur, seps);
/* u32 message_depth */
gen_obj->obj_data.node_obj.ndb_props.message_depth =
atoi(token);
token = strsep(&psz_cur, seps);
/* u32 num_input_streams */
gen_obj->obj_data.node_obj.ndb_props.num_input_streams =
atoi(token);
token = strsep(&psz_cur, seps);
/* u32 num_output_streams */
gen_obj->obj_data.node_obj.ndb_props.num_output_streams =
atoi(token);
token = strsep(&psz_cur, seps);
/* u32 timeout */
gen_obj->obj_data.node_obj.ndb_props.timeout = atoi(token);
token = strsep(&psz_cur, seps);
/* char *str_create_phase_fxn */
DBC_REQUIRE(token);
token_len = strlen(token);
gen_obj->obj_data.node_obj.str_create_phase_fxn =
kzalloc(token_len + 1, GFP_KERNEL);
strncpy(gen_obj->obj_data.node_obj.str_create_phase_fxn,
token, token_len);
gen_obj->obj_data.node_obj.str_create_phase_fxn[token_len] =
'\0';
token = strsep(&psz_cur, seps);
/* char *str_execute_phase_fxn */
DBC_REQUIRE(token);
token_len = strlen(token);
gen_obj->obj_data.node_obj.str_execute_phase_fxn =
kzalloc(token_len + 1, GFP_KERNEL);
strncpy(gen_obj->obj_data.node_obj.str_execute_phase_fxn,
token, token_len);
gen_obj->obj_data.node_obj.str_execute_phase_fxn[token_len] =
'\0';
token = strsep(&psz_cur, seps);
/* char *str_delete_phase_fxn */
DBC_REQUIRE(token);
token_len = strlen(token);
gen_obj->obj_data.node_obj.str_delete_phase_fxn =
kzalloc(token_len + 1, GFP_KERNEL);
strncpy(gen_obj->obj_data.node_obj.str_delete_phase_fxn,
token, token_len);
gen_obj->obj_data.node_obj.str_delete_phase_fxn[token_len] =
'\0';
token = strsep(&psz_cur, seps);
/* Segment id for message buffers */
gen_obj->obj_data.node_obj.msg_segid = atoi(token);
token = strsep(&psz_cur, seps);
/* Message notification type */
gen_obj->obj_data.node_obj.msg_notify_type = atoi(token);
token = strsep(&psz_cur, seps);
/* char *str_i_alg_name */
if (token) {
token_len = strlen(token);
gen_obj->obj_data.node_obj.str_i_alg_name =
kzalloc(token_len + 1, GFP_KERNEL);
strncpy(gen_obj->obj_data.node_obj.str_i_alg_name,
token, token_len);
gen_obj->obj_data.node_obj.str_i_alg_name[token_len] =
'\0';
token = strsep(&psz_cur, seps);
}
/* Load type (static, dynamic, or overlay) */
if (token) {
gen_obj->obj_data.node_obj.load_type = atoi(token);
token = strsep(&psz_cur, seps);
}
/* Dynamic load data requirements */
if (token) {
gen_obj->obj_data.node_obj.data_mem_seg_mask =
atoi(token);
token = strsep(&psz_cur, seps);
}
/* Dynamic load code requirements */
if (token) {
gen_obj->obj_data.node_obj.code_mem_seg_mask =
atoi(token);
token = strsep(&psz_cur, seps);
}
/* Extract node profiles into node properties */
if (token) {
gen_obj->obj_data.node_obj.ndb_props.count_profiles =
atoi(token);
for (i = 0;
i <
gen_obj->obj_data.node_obj.
ndb_props.count_profiles; i++) {
token = strsep(&psz_cur, seps);
if (token) {
/* Heap Size for the node */
gen_obj->obj_data.node_obj.
ndb_props.node_profiles[i].
heap_size = atoi(token);
}
}
}
token = strsep(&psz_cur, seps);
if (token) {
gen_obj->obj_data.node_obj.ndb_props.stack_seg_name =
(u32) (token);
}
break;
case DSP_DCDPROCESSORTYPE:
/*
* Parse COFF sect buffer to retrieve individual tokens used
* to fill in object attrs.
*/
psz_cur = psz_buf;
token = strsep(&psz_cur, seps);
gen_obj->obj_data.proc_info.cb_struct = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.proc_info.processor_family = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.proc_info.processor_type = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.proc_info.clock_rate = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.proc_info.internal_mem_size = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.proc_info.external_mem_size = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.proc_info.processor_id = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.proc_info.ty_running_rtos = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.proc_info.node_min_priority = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.proc_info.node_max_priority = atoi(token);
#ifdef _DB_TIOMAP
/* Proc object may contain additional(extended) attributes. */
/* attr must match proc.hxx */
for (entry_id = 0; entry_id < 7; entry_id++) {
token = strsep(&psz_cur, seps);
gen_obj->obj_data.ext_proc_obj.ty_tlb[entry_id].
gpp_phys = atoi(token);
token = strsep(&psz_cur, seps);
gen_obj->obj_data.ext_proc_obj.ty_tlb[entry_id].
dsp_virt = atoi(token);
}
#endif
break;
default:
status = -EPERM;
break;
}
return status;
}
/*
* ======== CompressBuffer ========
* Purpose:
* Compress the DSP buffer, if necessary, to conform to PC format.
*/
static void compress_buf(char *psz_buf, u32 ul_buf_size, s32 char_size)
{
char *p;
char ch;
char *q;
p = psz_buf;
if (p == NULL)
return;
for (q = psz_buf; q < (psz_buf + ul_buf_size);) {
ch = dsp_char2_gpp_char(q, char_size);
if (ch == '\\') {
q += char_size;
ch = dsp_char2_gpp_char(q, char_size);
switch (ch) {
case 't':
*p = '\t';
break;
case 'n':
*p = '\n';
break;
case 'r':
*p = '\r';
break;
case '0':
*p = '\0';
break;
default:
*p = ch;
break;
}
} else {
*p = ch;
}
p++;
q += char_size;
}
/* NULL out remainder of buffer. */
while (p < q)
*p++ = '\0';
}
/*
* ======== dsp_char2_gpp_char ========
* Purpose:
* Convert DSP char to host GPP char in a portable manner
*/
static char dsp_char2_gpp_char(char *word, s32 dsp_char_size)
{
char ch = '\0';
char *ch_src;
s32 i;
for (ch_src = word, i = dsp_char_size; i > 0; i--)
ch |= *ch_src++;
return ch;
}
/*
* ======== get_dep_lib_info ========
*/
static int get_dep_lib_info(struct dcd_manager *hdcd_mgr,
struct dsp_uuid *uuid_obj,
u16 *num_libs,
u16 *num_pers_libs,
struct dsp_uuid *dep_lib_uuids,
bool *prstnt_dep_libs,
enum nldr_phase phase)
{
struct dcd_manager *dcd_mgr_obj = hdcd_mgr;
char *psz_coff_buf = NULL;
char *psz_cur;
char *psz_file_name = NULL;
struct cod_libraryobj *lib = NULL;
u32 ul_addr = 0; /* Used by cod_get_section */
u32 ul_len = 0; /* Used by cod_get_section */
u32 dw_data_size = COD_MAXPATHLENGTH;
char seps[] = ", ";
char *token = NULL;
bool get_uuids = (dep_lib_uuids != NULL);
u16 dep_libs = 0;
int status = 0;
DBC_REQUIRE(refs > 0);
DBC_REQUIRE(hdcd_mgr);
DBC_REQUIRE(num_libs != NULL);
DBC_REQUIRE(uuid_obj != NULL);
/* Initialize to 0 dependent libraries, if only counting number of
* dependent libraries */
if (!get_uuids) {
*num_libs = 0;
*num_pers_libs = 0;
}
/* Allocate a buffer for file name */
psz_file_name = kzalloc(dw_data_size, GFP_KERNEL);
if (psz_file_name == NULL) {
status = -ENOMEM;
} else {
/* Get the name of the library */
status = dcd_get_library_name(hdcd_mgr, uuid_obj, psz_file_name,
&dw_data_size, phase, NULL);
}
/* Open the library */
if (!status) {
status = cod_open(dcd_mgr_obj->cod_mgr, psz_file_name,
COD_NOLOAD, &lib);
}
if (!status) {
/* Get dependent library section information. */
status = cod_get_section(lib, DEPLIBSECT, &ul_addr, &ul_len);
if (status) {
/* Ok, no dependent libraries */
ul_len = 0;
status = 0;
}
}
if (status || !(ul_len > 0))
goto func_cont;
/* Allocate zeroed buffer. */
psz_coff_buf = kzalloc(ul_len + 4, GFP_KERNEL);
if (psz_coff_buf == NULL)
status = -ENOMEM;
/* Read section contents. */
status = cod_read_section(lib, DEPLIBSECT, psz_coff_buf, ul_len);
if (status)
goto func_cont;
/* Compress and format DSP buffer to conform to PC format. */
compress_buf(psz_coff_buf, ul_len, DSPWORDSIZE);
/* Read from buffer */
psz_cur = psz_coff_buf;
while ((token = strsep(&psz_cur, seps)) && *token != '\0') {
if (get_uuids) {
if (dep_libs >= *num_libs) {
/* Gone beyond the limit */
break;
} else {
/* Retrieve UUID string. */
uuid_uuid_from_string(token,
&(dep_lib_uuids
[dep_libs]));
/* Is this library persistent? */
token = strsep(&psz_cur, seps);
prstnt_dep_libs[dep_libs] = atoi(token);
dep_libs++;
}
} else {
/* Advanc to next token */
token = strsep(&psz_cur, seps);
if (atoi(token))
(*num_pers_libs)++;
/* Just counting number of dependent libraries */
(*num_libs)++;
}
}
func_cont:
if (lib)
cod_close(lib);
/* Free previously allocated dynamic buffers. */
kfree(psz_file_name);
kfree(psz_coff_buf);
return status;
}