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nest-open-source / nest-guard / 1.0 / linux / 6754b876e4c89285b30ff59800d23e21ce2dbe3f / . / linux / drivers / staging / tidspbridge / rmgr / nldr.c
blob: a6ae007015d08721cdf847363b45db0a2bcd4b92 [file] [log] [blame]
/*
* nldr.c
*
* DSP-BIOS Bridge driver support functions for TI OMAP processors.
*
* DSP/BIOS Bridge dynamic + overlay Node loader.
*
* 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>
#include <dspbridge/host_os.h>
#include <dspbridge/dbdefs.h>
#include <dspbridge/dbc.h>
/* Platform manager */
#include <dspbridge/cod.h>
#include <dspbridge/dev.h>
/* Resource manager */
#include <dspbridge/dbll.h>
#include <dspbridge/dbdcd.h>
#include <dspbridge/rmm.h>
#include <dspbridge/uuidutil.h>
#include <dspbridge/nldr.h>
#include <linux/lcm.h>
/* Name of section containing dynamic load mem */
#define DYNMEMSECT ".dspbridge_mem"
/* Name of section containing dependent library information */
#define DEPLIBSECT ".dspbridge_deplibs"
/* Max depth of recursion for loading node's dependent libraries */
#define MAXDEPTH 5
/* Max number of persistent libraries kept by a node */
#define MAXLIBS 5
/*
* Defines for extracting packed dynamic load memory requirements from two
* masks.
* These defines must match node.cdb and dynm.cdb
* Format of data/code mask is:
* uuuuuuuu|fueeeeee|fudddddd|fucccccc|
* where
* u = unused
* cccccc = prefered/required dynamic mem segid for create phase data/code
* dddddd = prefered/required dynamic mem segid for delete phase data/code
* eeeeee = prefered/req. dynamic mem segid for execute phase data/code
* f = flag indicating if memory is preferred or required:
* f = 1 if required, f = 0 if preferred.
*
* The 6 bits of the segid are interpreted as follows:
*
* If the 6th bit (bit 5) is not set, then this specifies a memory segment
* between 0 and 31 (a maximum of 32 dynamic loading memory segments).
* If the 6th bit (bit 5) is set, segid has the following interpretation:
* segid = 32 - Any internal memory segment can be used.
* segid = 33 - Any external memory segment can be used.
* segid = 63 - Any memory segment can be used (in this case the
* required/preferred flag is irrelevant).
*
*/
/* Maximum allowed dynamic loading memory segments */
#define MAXMEMSEGS 32
#define MAXSEGID 3 /* Largest possible (real) segid */
#define MEMINTERNALID 32 /* Segid meaning use internal mem */
#define MEMEXTERNALID 33 /* Segid meaning use external mem */
#define NULLID 63 /* Segid meaning no memory req/pref */
#define FLAGBIT 7 /* 7th bit is pref./req. flag */
#define SEGMASK 0x3f /* Bits 0 - 5 */
#define CREATEBIT 0 /* Create segid starts at bit 0 */
#define DELETEBIT 8 /* Delete segid starts at bit 8 */
#define EXECUTEBIT 16 /* Execute segid starts at bit 16 */
/*
* Masks that define memory type. Must match defines in dynm.cdb.
*/
#define DYNM_CODE 0x2
#define DYNM_DATA 0x4
#define DYNM_CODEDATA (DYNM_CODE | DYNM_DATA)
#define DYNM_INTERNAL 0x8
#define DYNM_EXTERNAL 0x10
/*
* Defines for packing memory requirement/preference flags for code and
* data of each of the node's phases into one mask.
* The bit is set if the segid is required for loading code/data of the
* given phase. The bit is not set, if the segid is preferred only.
*
* These defines are also used as indeces into a segid array for the node.
* eg node's segid[CREATEDATAFLAGBIT] is the memory segment id that the
* create phase data is required or preferred to be loaded into.
*/
#define CREATEDATAFLAGBIT 0
#define CREATECODEFLAGBIT 1
#define EXECUTEDATAFLAGBIT 2
#define EXECUTECODEFLAGBIT 3
#define DELETEDATAFLAGBIT 4
#define DELETECODEFLAGBIT 5
#define MAXFLAGS 6
/*
* These names may be embedded in overlay sections to identify which
* node phase the section should be overlayed.
*/
#define PCREATE "create"
#define PDELETE "delete"
#define PEXECUTE "execute"
static inline bool is_equal_uuid(struct dsp_uuid *uuid1,
struct dsp_uuid *uuid2)
{
return !memcmp(uuid1, uuid2, sizeof(struct dsp_uuid));
}
/*
* ======== mem_seg_info ========
* Format of dynamic loading memory segment info in coff file.
* Must match dynm.h55.
*/
struct mem_seg_info {
u32 segid; /* Dynamic loading memory segment number */
u32 base;
u32 len;
u32 type; /* Mask of DYNM_CODE, DYNM_INTERNAL, etc. */
};
/*
* ======== lib_node ========
* For maintaining a tree of library dependencies.
*/
struct lib_node {
struct dbll_library_obj *lib; /* The library */
u16 dep_libs; /* Number of dependent libraries */
struct lib_node *dep_libs_tree; /* Dependent libraries of lib */
};
/*
* ======== ovly_sect ========
* Information needed to overlay a section.
*/
struct ovly_sect {
struct ovly_sect *next_sect;
u32 sect_load_addr; /* Load address of section */
u32 sect_run_addr; /* Run address of section */
u32 size; /* Size of section */
u16 page; /* DBL_CODE, DBL_DATA */
};
/*
* ======== ovly_node ========
* For maintaining a list of overlay nodes, with sections that need to be
* overlayed for each of the nodes phases.
*/
struct ovly_node {
struct dsp_uuid uuid;
char *node_name;
struct ovly_sect *create_sects_list;
struct ovly_sect *delete_sects_list;
struct ovly_sect *execute_sects_list;
struct ovly_sect *other_sects_list;
u16 create_sects;
u16 delete_sects;
u16 execute_sects;
u16 other_sects;
u16 create_ref;
u16 delete_ref;
u16 execute_ref;
u16 other_ref;
};
/*
* ======== nldr_object ========
* Overlay loader object.
*/
struct nldr_object {
struct dev_object *hdev_obj; /* Device object */
struct dcd_manager *hdcd_mgr; /* Proc/Node data manager */
struct dbll_tar_obj *dbll; /* The DBL loader */
struct dbll_library_obj *base_lib; /* Base image library */
struct rmm_target_obj *rmm; /* Remote memory manager for DSP */
struct dbll_fxns ldr_fxns; /* Loader function table */
struct dbll_attrs ldr_attrs; /* attrs to pass to loader functions */
nldr_ovlyfxn ovly_fxn; /* "write" for overlay nodes */
nldr_writefxn write_fxn; /* "write" for dynamic nodes */
struct ovly_node *ovly_table; /* Table of overlay nodes */
u16 ovly_nodes; /* Number of overlay nodes in base */
u16 ovly_nid; /* Index for tracking overlay nodes */
u16 dload_segs; /* Number of dynamic load mem segs */
u32 *seg_table; /* memtypes of dynamic memory segs
* indexed by segid
*/
u16 us_dsp_mau_size; /* Size of DSP MAU */
u16 us_dsp_word_size; /* Size of DSP word */
};
/*
* ======== nldr_nodeobject ========
* Dynamic node object. This object is created when a node is allocated.
*/
struct nldr_nodeobject {
struct nldr_object *nldr_obj; /* Dynamic loader handle */
void *priv_ref; /* Handle to pass to dbl_write_fxn */
struct dsp_uuid uuid; /* Node's UUID */
bool dynamic; /* Dynamically loaded node? */
bool overlay; /* Overlay node? */
bool *pf_phase_split; /* Multiple phase libraries? */
struct lib_node root; /* Library containing node phase */
struct lib_node create_lib; /* Library with create phase lib */
struct lib_node execute_lib; /* Library with execute phase lib */
struct lib_node delete_lib; /* Library with delete phase lib */
/* libs remain loaded until Delete */
struct lib_node pers_lib_table[MAXLIBS];
s32 pers_libs; /* Number of persistent libraries */
/* Path in lib dependency tree */
struct dbll_library_obj *lib_path[MAXDEPTH + 1];
enum nldr_phase phase; /* Node phase currently being loaded */
/*
* Dynamic loading memory segments for data and code of each phase.
*/
u16 seg_id[MAXFLAGS];
/*
* Mask indicating whether each mem segment specified in seg_id[]
* is preferred or required.
* For example
* if (code_data_flag_mask & (1 << EXECUTEDATAFLAGBIT)) != 0,
* then it is required to load execute phase data into the memory
* specified by seg_id[EXECUTEDATAFLAGBIT].
*/
u32 code_data_flag_mask;
};
/* Dynamic loader function table */
static struct dbll_fxns ldr_fxns = {
(dbll_close_fxn) dbll_close,
(dbll_create_fxn) dbll_create,
(dbll_delete_fxn) dbll_delete,
(dbll_exit_fxn) dbll_exit,
(dbll_get_attrs_fxn) dbll_get_attrs,
(dbll_get_addr_fxn) dbll_get_addr,
(dbll_get_c_addr_fxn) dbll_get_c_addr,
(dbll_get_sect_fxn) dbll_get_sect,
(dbll_init_fxn) dbll_init,
(dbll_load_fxn) dbll_load,
(dbll_load_sect_fxn) dbll_load_sect,
(dbll_open_fxn) dbll_open,
(dbll_read_sect_fxn) dbll_read_sect,
(dbll_set_attrs_fxn) dbll_set_attrs,
(dbll_unload_fxn) dbll_unload,
(dbll_unload_sect_fxn) dbll_unload_sect,
};
static u32 refs; /* module reference count */
static int add_ovly_info(void *handle, struct dbll_sect_info *sect_info,
u32 addr, u32 bytes);
static int add_ovly_node(struct dsp_uuid *uuid_obj,
enum dsp_dcdobjtype obj_type, void *handle);
static int add_ovly_sect(struct nldr_object *nldr_obj,
struct ovly_sect **lst,
struct dbll_sect_info *sect_inf,
bool *exists, u32 addr, u32 bytes);
static s32 fake_ovly_write(void *handle, u32 dsp_address, void *buf, u32 bytes,
s32 mtype);
static void free_sects(struct nldr_object *nldr_obj,
struct ovly_sect *phase_sects, u16 alloc_num);
static bool get_symbol_value(void *handle, void *parg, void *rmm_handle,
char *sym_name, struct dbll_sym_val **sym);
static int load_lib(struct nldr_nodeobject *nldr_node_obj,
struct lib_node *root, struct dsp_uuid uuid,
bool root_prstnt,
struct dbll_library_obj **lib_path,
enum nldr_phase phase, u16 depth);
static int load_ovly(struct nldr_nodeobject *nldr_node_obj,
enum nldr_phase phase);
static int remote_alloc(void **ref, u16 mem_sect, u32 size,
u32 align, u32 *dsp_address,
s32 segmnt_id,
s32 req, bool reserve);
static int remote_free(void **ref, u16 space, u32 dsp_address, u32 size,
bool reserve);
static void unload_lib(struct nldr_nodeobject *nldr_node_obj,
struct lib_node *root);
static void unload_ovly(struct nldr_nodeobject *nldr_node_obj,
enum nldr_phase phase);
static bool find_in_persistent_lib_array(struct nldr_nodeobject *nldr_node_obj,
struct dbll_library_obj *lib);
/*
* ======== nldr_allocate ========
*/
int nldr_allocate(struct nldr_object *nldr_obj, void *priv_ref,
const struct dcd_nodeprops *node_props,
struct nldr_nodeobject **nldr_nodeobj,
bool *pf_phase_split)
{
struct nldr_nodeobject *nldr_node_obj = NULL;
int status = 0;
DBC_REQUIRE(refs > 0);
DBC_REQUIRE(node_props != NULL);
DBC_REQUIRE(nldr_nodeobj != NULL);
DBC_REQUIRE(nldr_obj);
/* Initialize handle in case of failure */
*nldr_nodeobj = NULL;
/* Allocate node object */
nldr_node_obj = kzalloc(sizeof(struct nldr_nodeobject), GFP_KERNEL);
if (nldr_node_obj == NULL) {
status = -ENOMEM;
} else {
nldr_node_obj->pf_phase_split = pf_phase_split;
nldr_node_obj->pers_libs = 0;
nldr_node_obj->nldr_obj = nldr_obj;
nldr_node_obj->priv_ref = priv_ref;
/* Save node's UUID. */
nldr_node_obj->uuid = node_props->ndb_props.ui_node_id;
/*
* Determine if node is a dynamically loaded node from
* ndb_props.
*/
if (node_props->us_load_type == NLDR_DYNAMICLOAD) {
/* Dynamic node */
nldr_node_obj->dynamic = true;
/*
* Extract memory requirements from ndb_props masks
*/
/* Create phase */
nldr_node_obj->seg_id[CREATEDATAFLAGBIT] = (u16)
(node_props->ul_data_mem_seg_mask >> CREATEBIT) &
SEGMASK;
nldr_node_obj->code_data_flag_mask |=
((node_props->ul_data_mem_seg_mask >>
(CREATEBIT + FLAGBIT)) & 1) << CREATEDATAFLAGBIT;
nldr_node_obj->seg_id[CREATECODEFLAGBIT] = (u16)
(node_props->ul_code_mem_seg_mask >>
CREATEBIT) & SEGMASK;
nldr_node_obj->code_data_flag_mask |=
((node_props->ul_code_mem_seg_mask >>
(CREATEBIT + FLAGBIT)) & 1) << CREATECODEFLAGBIT;
/* Execute phase */
nldr_node_obj->seg_id[EXECUTEDATAFLAGBIT] = (u16)
(node_props->ul_data_mem_seg_mask >>
EXECUTEBIT) & SEGMASK;
nldr_node_obj->code_data_flag_mask |=
((node_props->ul_data_mem_seg_mask >>
(EXECUTEBIT + FLAGBIT)) & 1) <<
EXECUTEDATAFLAGBIT;
nldr_node_obj->seg_id[EXECUTECODEFLAGBIT] = (u16)
(node_props->ul_code_mem_seg_mask >>
EXECUTEBIT) & SEGMASK;
nldr_node_obj->code_data_flag_mask |=
((node_props->ul_code_mem_seg_mask >>
(EXECUTEBIT + FLAGBIT)) & 1) <<
EXECUTECODEFLAGBIT;
/* Delete phase */
nldr_node_obj->seg_id[DELETEDATAFLAGBIT] = (u16)
(node_props->ul_data_mem_seg_mask >> DELETEBIT) &
SEGMASK;
nldr_node_obj->code_data_flag_mask |=
((node_props->ul_data_mem_seg_mask >>
(DELETEBIT + FLAGBIT)) & 1) << DELETEDATAFLAGBIT;
nldr_node_obj->seg_id[DELETECODEFLAGBIT] = (u16)
(node_props->ul_code_mem_seg_mask >>
DELETEBIT) & SEGMASK;
nldr_node_obj->code_data_flag_mask |=
((node_props->ul_code_mem_seg_mask >>
(DELETEBIT + FLAGBIT)) & 1) << DELETECODEFLAGBIT;
} else {
/* Non-dynamically loaded nodes are part of the
* base image */
nldr_node_obj->root.lib = nldr_obj->base_lib;
/* Check for overlay node */
if (node_props->us_load_type == NLDR_OVLYLOAD)
nldr_node_obj->overlay = true;
}
*nldr_nodeobj = (struct nldr_nodeobject *)nldr_node_obj;
}
/* Cleanup on failure */
if (status && nldr_node_obj)
kfree(nldr_node_obj);
DBC_ENSURE((!status && *nldr_nodeobj)
|| (status && *nldr_nodeobj == NULL));
return status;
}
/*
* ======== nldr_create ========
*/
int nldr_create(struct nldr_object **nldr,
struct dev_object *hdev_obj,
const struct nldr_attrs *pattrs)
{
struct cod_manager *cod_mgr; /* COD manager */
char *psz_coff_buf = NULL;
char sz_zl_file[COD_MAXPATHLENGTH];
struct nldr_object *nldr_obj = NULL;
struct dbll_attrs save_attrs;
struct dbll_attrs new_attrs;
dbll_flags flags;
u32 ul_entry;
u16 dload_segs = 0;
struct mem_seg_info *mem_info_obj;
u32 ul_len = 0;
u32 ul_addr;
struct rmm_segment *rmm_segs = NULL;
u16 i;
int status = 0;
DBC_REQUIRE(refs > 0);
DBC_REQUIRE(nldr != NULL);
DBC_REQUIRE(hdev_obj != NULL);
DBC_REQUIRE(pattrs != NULL);
DBC_REQUIRE(pattrs->pfn_ovly != NULL);
DBC_REQUIRE(pattrs->pfn_write != NULL);
/* Allocate dynamic loader object */
nldr_obj = kzalloc(sizeof(struct nldr_object), GFP_KERNEL);
if (nldr_obj) {
nldr_obj->hdev_obj = hdev_obj;
/* warning, lazy status checking alert! */
dev_get_cod_mgr(hdev_obj, &cod_mgr);
if (cod_mgr) {
status = cod_get_loader(cod_mgr, &nldr_obj->dbll);
DBC_ASSERT(!status);
status = cod_get_base_lib(cod_mgr, &nldr_obj->base_lib);
DBC_ASSERT(!status);
status =
cod_get_base_name(cod_mgr, sz_zl_file,
COD_MAXPATHLENGTH);
DBC_ASSERT(!status);
}
status = 0;
/* end lazy status checking */
nldr_obj->us_dsp_mau_size = pattrs->us_dsp_mau_size;
nldr_obj->us_dsp_word_size = pattrs->us_dsp_word_size;
nldr_obj->ldr_fxns = ldr_fxns;
if (!(nldr_obj->ldr_fxns.init_fxn()))
status = -ENOMEM;
} else {
status = -ENOMEM;
}
/* Create the DCD Manager */
if (!status)
status = dcd_create_manager(NULL, &nldr_obj->hdcd_mgr);
/* Get dynamic loading memory sections from base lib */
if (!status) {
status =
nldr_obj->ldr_fxns.get_sect_fxn(nldr_obj->base_lib,
DYNMEMSECT, &ul_addr,
&ul_len);
if (!status) {
psz_coff_buf =
kzalloc(ul_len * nldr_obj->us_dsp_mau_size,
GFP_KERNEL);
if (!psz_coff_buf)
status = -ENOMEM;
} else {
/* Ok to not have dynamic loading memory */
status = 0;
ul_len = 0;
dev_dbg(bridge, "%s: failed - no dynamic loading mem "
"segments: 0x%x\n", __func__, status);
}
}
if (!status && ul_len > 0) {
/* Read section containing dynamic load mem segments */
status =
nldr_obj->ldr_fxns.read_sect_fxn(nldr_obj->base_lib,
DYNMEMSECT, psz_coff_buf,
ul_len);
}
if (!status && ul_len > 0) {
/* Parse memory segment data */
dload_segs = (u16) (*((u32 *) psz_coff_buf));
if (dload_segs > MAXMEMSEGS)
status = -EBADF;
}
/* Parse dynamic load memory segments */
if (!status && dload_segs > 0) {
rmm_segs = kzalloc(sizeof(struct rmm_segment) * dload_segs,
GFP_KERNEL);
nldr_obj->seg_table =
kzalloc(sizeof(u32) * dload_segs, GFP_KERNEL);
if (rmm_segs == NULL || nldr_obj->seg_table == NULL) {
status = -ENOMEM;
} else {
nldr_obj->dload_segs = dload_segs;
mem_info_obj = (struct mem_seg_info *)(psz_coff_buf +
sizeof(u32));
for (i = 0; i < dload_segs; i++) {
rmm_segs[i].base = (mem_info_obj + i)->base;
rmm_segs[i].length = (mem_info_obj + i)->len;
rmm_segs[i].space = 0;
nldr_obj->seg_table[i] =
(mem_info_obj + i)->type;
dev_dbg(bridge,
"(proc) DLL MEMSEGMENT: %d, "
"Base: 0x%x, Length: 0x%x\n", i,
rmm_segs[i].base, rmm_segs[i].length);
}
}
}
/* Create Remote memory manager */
if (!status)
status = rmm_create(&nldr_obj->rmm, rmm_segs, dload_segs);
if (!status) {
/* set the alloc, free, write functions for loader */
nldr_obj->ldr_fxns.get_attrs_fxn(nldr_obj->dbll, &save_attrs);
new_attrs = save_attrs;
new_attrs.alloc = (dbll_alloc_fxn) remote_alloc;
new_attrs.free = (dbll_free_fxn) remote_free;
new_attrs.sym_lookup = (dbll_sym_lookup) get_symbol_value;
new_attrs.sym_handle = nldr_obj;
new_attrs.write = (dbll_write_fxn) pattrs->pfn_write;
nldr_obj->ovly_fxn = pattrs->pfn_ovly;
nldr_obj->write_fxn = pattrs->pfn_write;
nldr_obj->ldr_attrs = new_attrs;
}
kfree(rmm_segs);
kfree(psz_coff_buf);
/* Get overlay nodes */
if (!status) {
status =
cod_get_base_name(cod_mgr, sz_zl_file, COD_MAXPATHLENGTH);
/* lazy check */
DBC_ASSERT(!status);
/* First count number of overlay nodes */
status =
dcd_get_objects(nldr_obj->hdcd_mgr, sz_zl_file,
add_ovly_node, (void *)nldr_obj);
/* Now build table of overlay nodes */
if (!status && nldr_obj->ovly_nodes > 0) {
/* Allocate table for overlay nodes */
nldr_obj->ovly_table =
kzalloc(sizeof(struct ovly_node) *
nldr_obj->ovly_nodes, GFP_KERNEL);
/* Put overlay nodes in the table */
nldr_obj->ovly_nid = 0;
status = dcd_get_objects(nldr_obj->hdcd_mgr, sz_zl_file,
add_ovly_node,
(void *)nldr_obj);
}
}
/* Do a fake reload of the base image to get overlay section info */
if (!status && nldr_obj->ovly_nodes > 0) {
save_attrs.write = fake_ovly_write;
save_attrs.log_write = add_ovly_info;
save_attrs.log_write_handle = nldr_obj;
flags = DBLL_CODE | DBLL_DATA | DBLL_SYMB;
status = nldr_obj->ldr_fxns.load_fxn(nldr_obj->base_lib, flags,
&save_attrs, &ul_entry);
}
if (!status) {
*nldr = (struct nldr_object *)nldr_obj;
} else {
if (nldr_obj)
nldr_delete((struct nldr_object *)nldr_obj);
*nldr = NULL;
}
/* FIXME:Temp. Fix. Must be removed */
DBC_ENSURE((!status && *nldr) || (status && *nldr == NULL));
return status;
}
/*
* ======== nldr_delete ========
*/
void nldr_delete(struct nldr_object *nldr_obj)
{
struct ovly_sect *ovly_section;
struct ovly_sect *next;
u16 i;
DBC_REQUIRE(refs > 0);
DBC_REQUIRE(nldr_obj);
nldr_obj->ldr_fxns.exit_fxn();
if (nldr_obj->rmm)
rmm_delete(nldr_obj->rmm);
kfree(nldr_obj->seg_table);
if (nldr_obj->hdcd_mgr)
dcd_destroy_manager(nldr_obj->hdcd_mgr);
/* Free overlay node information */
if (nldr_obj->ovly_table) {
for (i = 0; i < nldr_obj->ovly_nodes; i++) {
ovly_section =
nldr_obj->ovly_table[i].create_sects_list;
while (ovly_section) {
next = ovly_section->next_sect;
kfree(ovly_section);
ovly_section = next;
}
ovly_section =
nldr_obj->ovly_table[i].delete_sects_list;
while (ovly_section) {
next = ovly_section->next_sect;
kfree(ovly_section);
ovly_section = next;
}
ovly_section =
nldr_obj->ovly_table[i].execute_sects_list;
while (ovly_section) {
next = ovly_section->next_sect;
kfree(ovly_section);
ovly_section = next;
}
ovly_section = nldr_obj->ovly_table[i].other_sects_list;
while (ovly_section) {
next = ovly_section->next_sect;
kfree(ovly_section);
ovly_section = next;
}
}
kfree(nldr_obj->ovly_table);
}
kfree(nldr_obj);
}
/*
* ======== nldr_exit ========
* Discontinue usage of NLDR module.
*/
void nldr_exit(void)
{
DBC_REQUIRE(refs > 0);
refs--;
if (refs == 0)
rmm_exit();
DBC_ENSURE(refs >= 0);
}
/*
* ======== nldr_get_fxn_addr ========
*/
int nldr_get_fxn_addr(struct nldr_nodeobject *nldr_node_obj,
char *str_fxn, u32 * addr)
{
struct dbll_sym_val *dbll_sym;
struct nldr_object *nldr_obj;
int status = 0;
bool status1 = false;
s32 i = 0;
struct lib_node root = { NULL, 0, NULL };
DBC_REQUIRE(refs > 0);
DBC_REQUIRE(nldr_node_obj);
DBC_REQUIRE(addr != NULL);
DBC_REQUIRE(str_fxn != NULL);
nldr_obj = nldr_node_obj->nldr_obj;
/* Called from node_create(), node_delete(), or node_run(). */
if (nldr_node_obj->dynamic && *nldr_node_obj->pf_phase_split) {
switch (nldr_node_obj->phase) {
case NLDR_CREATE:
root = nldr_node_obj->create_lib;
break;
case NLDR_EXECUTE:
root = nldr_node_obj->execute_lib;
break;
case NLDR_DELETE:
root = nldr_node_obj->delete_lib;
break;
default:
DBC_ASSERT(false);
break;
}
} else {
/* for Overlay nodes or non-split Dynamic nodes */
root = nldr_node_obj->root;
}
status1 =
nldr_obj->ldr_fxns.get_c_addr_fxn(root.lib, str_fxn, &dbll_sym);
if (!status1)
status1 =
nldr_obj->ldr_fxns.get_addr_fxn(root.lib, str_fxn,
&dbll_sym);
/* If symbol not found, check dependent libraries */
if (!status1) {
for (i = 0; i < root.dep_libs; i++) {
status1 =
nldr_obj->ldr_fxns.get_addr_fxn(root.dep_libs_tree
[i].lib, str_fxn,
&dbll_sym);
if (!status1) {
status1 =
nldr_obj->ldr_fxns.
get_c_addr_fxn(root.dep_libs_tree[i].lib,
str_fxn, &dbll_sym);
}
if (status1) {
/* Symbol found */
break;
}
}
}
/* Check persistent libraries */
if (!status1) {
for (i = 0; i < nldr_node_obj->pers_libs; i++) {
status1 =
nldr_obj->ldr_fxns.
get_addr_fxn(nldr_node_obj->pers_lib_table[i].lib,
str_fxn, &dbll_sym);
if (!status1) {
status1 =
nldr_obj->ldr_fxns.
get_c_addr_fxn(nldr_node_obj->pers_lib_table
[i].lib, str_fxn, &dbll_sym);
}
if (status1) {
/* Symbol found */
break;
}
}
}
if (status1)
*addr = dbll_sym->value;
else
status = -ESPIPE;
return status;
}
/*
* ======== nldr_get_rmm_manager ========
* Given a NLDR object, retrieve RMM Manager Handle
*/
int nldr_get_rmm_manager(struct nldr_object *nldr,
struct rmm_target_obj **rmm_mgr)
{
int status = 0;
struct nldr_object *nldr_obj = nldr;
DBC_REQUIRE(rmm_mgr != NULL);
if (nldr) {
*rmm_mgr = nldr_obj->rmm;
} else {
*rmm_mgr = NULL;
status = -EFAULT;
}
DBC_ENSURE(!status || (rmm_mgr != NULL && *rmm_mgr == NULL));
return status;
}
/*
* ======== nldr_init ========
* Initialize the NLDR module.
*/
bool nldr_init(void)
{
DBC_REQUIRE(refs >= 0);
if (refs == 0)
rmm_init();
refs++;
DBC_ENSURE(refs > 0);
return true;
}
/*
* ======== nldr_load ========
*/
int nldr_load(struct nldr_nodeobject *nldr_node_obj,
enum nldr_phase phase)
{
struct nldr_object *nldr_obj;
struct dsp_uuid lib_uuid;
int status = 0;
DBC_REQUIRE(refs > 0);
DBC_REQUIRE(nldr_node_obj);
nldr_obj = nldr_node_obj->nldr_obj;
if (nldr_node_obj->dynamic) {
nldr_node_obj->phase = phase;
lib_uuid = nldr_node_obj->uuid;
/* At this point, we may not know if node is split into
* different libraries. So we'll go ahead and load the
* library, and then save the pointer to the appropriate
* location after we know. */
status =
load_lib(nldr_node_obj, &nldr_node_obj->root, lib_uuid,
false, nldr_node_obj->lib_path, phase, 0);
if (!status) {
if (*nldr_node_obj->pf_phase_split) {
switch (phase) {
case NLDR_CREATE:
nldr_node_obj->create_lib =
nldr_node_obj->root;
break;
case NLDR_EXECUTE:
nldr_node_obj->execute_lib =
nldr_node_obj->root;
break;
case NLDR_DELETE:
nldr_node_obj->delete_lib =
nldr_node_obj->root;
break;
default:
DBC_ASSERT(false);
break;
}
}
}
} else {
if (nldr_node_obj->overlay)
status = load_ovly(nldr_node_obj, phase);
}
return status;
}
/*
* ======== nldr_unload ========
*/
int nldr_unload(struct nldr_nodeobject *nldr_node_obj,
enum nldr_phase phase)
{
int status = 0;
struct lib_node *root_lib = NULL;
s32 i = 0;
DBC_REQUIRE(refs > 0);
DBC_REQUIRE(nldr_node_obj);
if (nldr_node_obj != NULL) {
if (nldr_node_obj->dynamic) {
if (*nldr_node_obj->pf_phase_split) {
switch (phase) {
case NLDR_CREATE:
root_lib = &nldr_node_obj->create_lib;
break;
case NLDR_EXECUTE:
root_lib = &nldr_node_obj->execute_lib;
break;
case NLDR_DELETE:
root_lib = &nldr_node_obj->delete_lib;
/* Unload persistent libraries */
for (i = 0;
i < nldr_node_obj->pers_libs;
i++) {
unload_lib(nldr_node_obj,
&nldr_node_obj->
pers_lib_table[i]);
}
nldr_node_obj->pers_libs = 0;
break;
default:
DBC_ASSERT(false);
break;
}
} else {
/* Unload main library */
root_lib = &nldr_node_obj->root;
}
if (root_lib)
unload_lib(nldr_node_obj, root_lib);
} else {
if (nldr_node_obj->overlay)
unload_ovly(nldr_node_obj, phase);
}
}
return status;
}
/*
* ======== add_ovly_info ========
*/
static int add_ovly_info(void *handle, struct dbll_sect_info *sect_info,
u32 addr, u32 bytes)
{
char *node_name;
char *sect_name = (char *)sect_info->name;
bool sect_exists = false;
char seps = ':';
char *pch;
u16 i;
struct nldr_object *nldr_obj = (struct nldr_object *)handle;
int status = 0;
/* Is this an overlay section (load address != run address)? */
if (sect_info->sect_load_addr == sect_info->sect_run_addr)
goto func_end;
/* Find the node it belongs to */
for (i = 0; i < nldr_obj->ovly_nodes; i++) {
node_name = nldr_obj->ovly_table[i].node_name;
DBC_REQUIRE(node_name);
if (strncmp(node_name, sect_name + 1, strlen(node_name)) == 0) {
/* Found the node */
break;
}
}
if (!(i < nldr_obj->ovly_nodes))
goto func_end;
/* Determine which phase this section belongs to */
for (pch = sect_name + 1; *pch && *pch != seps; pch++)
;;
if (*pch) {
pch++; /* Skip over the ':' */
if (strncmp(pch, PCREATE, strlen(PCREATE)) == 0) {
status =
add_ovly_sect(nldr_obj,
&nldr_obj->
ovly_table[i].create_sects_list,
sect_info, &sect_exists, addr, bytes);
if (!status && !sect_exists)
nldr_obj->ovly_table[i].create_sects++;
} else if (strncmp(pch, PDELETE, strlen(PDELETE)) == 0) {
status =
add_ovly_sect(nldr_obj,
&nldr_obj->
ovly_table[i].delete_sects_list,
sect_info, &sect_exists, addr, bytes);
if (!status && !sect_exists)
nldr_obj->ovly_table[i].delete_sects++;
} else if (strncmp(pch, PEXECUTE, strlen(PEXECUTE)) == 0) {
status =
add_ovly_sect(nldr_obj,
&nldr_obj->
ovly_table[i].execute_sects_list,
sect_info, &sect_exists, addr, bytes);
if (!status && !sect_exists)
nldr_obj->ovly_table[i].execute_sects++;
} else {
/* Put in "other" sectins */
status =
add_ovly_sect(nldr_obj,
&nldr_obj->
ovly_table[i].other_sects_list,
sect_info, &sect_exists, addr, bytes);
if (!status && !sect_exists)
nldr_obj->ovly_table[i].other_sects++;
}
}
func_end:
return status;
}
/*
* ======== add_ovly_node =========
* Callback function passed to dcd_get_objects.
*/
static int add_ovly_node(struct dsp_uuid *uuid_obj,
enum dsp_dcdobjtype obj_type, void *handle)
{
struct nldr_object *nldr_obj = (struct nldr_object *)handle;
char *node_name = NULL;
char *pbuf = NULL;
u32 len;
struct dcd_genericobj obj_def;
int status = 0;
if (obj_type != DSP_DCDNODETYPE)
goto func_end;
status =
dcd_get_object_def(nldr_obj->hdcd_mgr, uuid_obj, obj_type,
&obj_def);
if (status)
goto func_end;
/* If overlay node, add to the list */
if (obj_def.obj_data.node_obj.us_load_type == NLDR_OVLYLOAD) {
if (nldr_obj->ovly_table == NULL) {
nldr_obj->ovly_nodes++;
} else {
/* Add node to table */
nldr_obj->ovly_table[nldr_obj->ovly_nid].uuid =
*uuid_obj;
DBC_REQUIRE(obj_def.obj_data.node_obj.ndb_props.
ac_name);
len =
strlen(obj_def.obj_data.node_obj.ndb_props.ac_name);
node_name = obj_def.obj_data.node_obj.ndb_props.ac_name;
pbuf = kzalloc(len + 1, GFP_KERNEL);
if (pbuf == NULL) {
status = -ENOMEM;
} else {
strncpy(pbuf, node_name, len);
nldr_obj->ovly_table[nldr_obj->ovly_nid].
node_name = pbuf;
nldr_obj->ovly_nid++;
}
}
}
/* These were allocated in dcd_get_object_def */
kfree(obj_def.obj_data.node_obj.pstr_create_phase_fxn);
kfree(obj_def.obj_data.node_obj.pstr_execute_phase_fxn);
kfree(obj_def.obj_data.node_obj.pstr_delete_phase_fxn);
kfree(obj_def.obj_data.node_obj.pstr_i_alg_name);
func_end:
return status;
}
/*
* ======== add_ovly_sect ========
*/
static int add_ovly_sect(struct nldr_object *nldr_obj,
struct ovly_sect **lst,
struct dbll_sect_info *sect_inf,
bool *exists, u32 addr, u32 bytes)
{
struct ovly_sect *new_sect = NULL;
struct ovly_sect *last_sect;
struct ovly_sect *ovly_section;
int status = 0;
ovly_section = last_sect = *lst;
*exists = false;
while (ovly_section) {
/*
* Make sure section has not already been added. Multiple
* 'write' calls may be made to load the section.
*/
if (ovly_section->sect_load_addr == addr) {
/* Already added */
*exists = true;
break;
}
last_sect = ovly_section;
ovly_section = ovly_section->next_sect;
}
if (!ovly_section) {
/* New section */
new_sect = kzalloc(sizeof(struct ovly_sect), GFP_KERNEL);
if (new_sect == NULL) {
status = -ENOMEM;
} else {
new_sect->sect_load_addr = addr;
new_sect->sect_run_addr = sect_inf->sect_run_addr +
(addr - sect_inf->sect_load_addr);
new_sect->size = bytes;
new_sect->page = sect_inf->type;
}
/* Add to the list */
if (!status) {
if (*lst == NULL) {
/* First in the list */
*lst = new_sect;
} else {
last_sect->next_sect = new_sect;
}
}
}
return status;
}
/*
* ======== fake_ovly_write ========
*/
static s32 fake_ovly_write(void *handle, u32 dsp_address, void *buf, u32 bytes,
s32 mtype)
{
return (s32) bytes;
}
/*
* ======== free_sects ========
*/
static void free_sects(struct nldr_object *nldr_obj,
struct ovly_sect *phase_sects, u16 alloc_num)
{
struct ovly_sect *ovly_section = phase_sects;
u16 i = 0;
bool ret;
while (ovly_section && i < alloc_num) {
/* 'Deallocate' */
/* segid - page not supported yet */
/* Reserved memory */
ret =
rmm_free(nldr_obj->rmm, 0, ovly_section->sect_run_addr,
ovly_section->size, true);
DBC_ASSERT(ret);
ovly_section = ovly_section->next_sect;
i++;
}
}
/*
* ======== get_symbol_value ========
* Find symbol in library's base image. If not there, check dependent
* libraries.
*/
static bool get_symbol_value(void *handle, void *parg, void *rmm_handle,
char *sym_name, struct dbll_sym_val **sym)
{
struct nldr_object *nldr_obj = (struct nldr_object *)handle;
struct nldr_nodeobject *nldr_node_obj =
(struct nldr_nodeobject *)rmm_handle;
struct lib_node *root = (struct lib_node *)parg;
u16 i;
bool status = false;
/* check the base image */
status = nldr_obj->ldr_fxns.get_addr_fxn(nldr_obj->base_lib,
sym_name, sym);
if (!status)
status =
nldr_obj->ldr_fxns.get_c_addr_fxn(nldr_obj->base_lib,
sym_name, sym);
/*
* Check in root lib itself. If the library consists of
* multiple object files linked together, some symbols in the
* library may need to be resolved.
*/
if (!status) {
status = nldr_obj->ldr_fxns.get_addr_fxn(root->lib, sym_name,
sym);
if (!status) {
status =
nldr_obj->ldr_fxns.get_c_addr_fxn(root->lib,
sym_name, sym);
}
}
/*
* Check in root lib's dependent libraries, but not dependent
* libraries' dependents.
*/
if (!status) {
for (i = 0; i < root->dep_libs; i++) {
status =
nldr_obj->ldr_fxns.get_addr_fxn(root->
dep_libs_tree
[i].lib,
sym_name, sym);
if (!status) {
status =
nldr_obj->ldr_fxns.
get_c_addr_fxn(root->dep_libs_tree[i].lib,
sym_name, sym);
}
if (status) {
/* Symbol found */
break;
}
}
}
/*
* Check in persistent libraries
*/
if (!status) {
for (i = 0; i < nldr_node_obj->pers_libs; i++) {
status =
nldr_obj->ldr_fxns.
get_addr_fxn(nldr_node_obj->pers_lib_table[i].lib,
sym_name, sym);
if (!status) {
status = nldr_obj->ldr_fxns.get_c_addr_fxn
(nldr_node_obj->pers_lib_table[i].lib,
sym_name, sym);
}
if (status) {
/* Symbol found */
break;
}
}
}
return status;
}
/*
* ======== load_lib ========
* Recursively load library and all its dependent libraries. The library
* we're loading is specified by a uuid.
*/
static int load_lib(struct nldr_nodeobject *nldr_node_obj,
struct lib_node *root, struct dsp_uuid uuid,
bool root_prstnt,
struct dbll_library_obj **lib_path,
enum nldr_phase phase, u16 depth)
{
struct nldr_object *nldr_obj = nldr_node_obj->nldr_obj;
u16 nd_libs = 0; /* Number of dependent libraries */
u16 np_libs = 0; /* Number of persistent libraries */
u16 nd_libs_loaded = 0; /* Number of dep. libraries loaded */
u16 i;
u32 entry;
u32 dw_buf_size = NLDR_MAXPATHLENGTH;
dbll_flags flags = DBLL_SYMB | DBLL_CODE | DBLL_DATA | DBLL_DYNAMIC;
struct dbll_attrs new_attrs;
char *psz_file_name = NULL;
struct dsp_uuid *dep_lib_uui_ds = NULL;
bool *persistent_dep_libs = NULL;
int status = 0;
bool lib_status = false;
struct lib_node *dep_lib;
if (depth > MAXDEPTH) {
/* Error */
DBC_ASSERT(false);
}
root->lib = NULL;
/* Allocate a buffer for library file name of size DBL_MAXPATHLENGTH */
psz_file_name = kzalloc(DBLL_MAXPATHLENGTH, GFP_KERNEL);
if (psz_file_name == NULL)
status = -ENOMEM;
if (!status) {
/* Get the name of the library */
if (depth == 0) {
status =
dcd_get_library_name(nldr_node_obj->nldr_obj->
hdcd_mgr, &uuid, psz_file_name,
&dw_buf_size, phase,
nldr_node_obj->pf_phase_split);
} else {
/* Dependent libraries are registered with a phase */
status =
dcd_get_library_name(nldr_node_obj->nldr_obj->
hdcd_mgr, &uuid, psz_file_name,
&dw_buf_size, NLDR_NOPHASE,
NULL);
}
}
if (!status) {
/* Open the library, don't load symbols */
status =
nldr_obj->ldr_fxns.open_fxn(nldr_obj->dbll, psz_file_name,
DBLL_NOLOAD, &root->lib);
}
/* Done with file name */
kfree(psz_file_name);
/* Check to see if library not already loaded */
if (!status && root_prstnt) {
lib_status =
find_in_persistent_lib_array(nldr_node_obj, root->lib);
/* Close library */
if (lib_status) {
nldr_obj->ldr_fxns.close_fxn(root->lib);
return 0;
}
}
if (!status) {
/* Check for circular dependencies. */
for (i = 0; i < depth; i++) {
if (root->lib == lib_path[i]) {
/* This condition could be checked by a
* tool at build time. */
status = -EILSEQ;
}
}
}
if (!status) {
/* Add library to current path in dependency tree */
lib_path[depth] = root->lib;
depth++;
/* Get number of dependent libraries */
status =
dcd_get_num_dep_libs(nldr_node_obj->nldr_obj->hdcd_mgr,
&uuid, &nd_libs, &np_libs, phase);
}
DBC_ASSERT(nd_libs >= np_libs);
if (!status) {
if (!(*nldr_node_obj->pf_phase_split))
np_libs = 0;
/* nd_libs = #of dependent libraries */
root->dep_libs = nd_libs - np_libs;
if (nd_libs > 0) {
dep_lib_uui_ds = kzalloc(sizeof(struct dsp_uuid) *
nd_libs, GFP_KERNEL);
persistent_dep_libs =
kzalloc(sizeof(bool) * nd_libs, GFP_KERNEL);
if (!dep_lib_uui_ds || !persistent_dep_libs)
status = -ENOMEM;
if (root->dep_libs > 0) {
/* Allocate arrays for dependent lib UUIDs,
* lib nodes */
root->dep_libs_tree = kzalloc
(sizeof(struct lib_node) *
(root->dep_libs), GFP_KERNEL);
if (!(root->dep_libs_tree))
status = -ENOMEM;
}
if (!status) {
/* Get the dependent library UUIDs */
status =
dcd_get_dep_libs(nldr_node_obj->
nldr_obj->hdcd_mgr, &uuid,
nd_libs, dep_lib_uui_ds,
persistent_dep_libs,
phase);
}
}
}
/*
* Recursively load dependent libraries.
*/
if (!status) {
for (i = 0; i < nd_libs; i++) {
/* If root library is NOT persistent, and dep library
* is, then record it. If root library IS persistent,
* the deplib is already included */
if (!root_prstnt && persistent_dep_libs[i] &&
*nldr_node_obj->pf_phase_split) {
if ((nldr_node_obj->pers_libs) >= MAXLIBS) {
status = -EILSEQ;
break;
}
/* Allocate library outside of phase */
dep_lib =
&nldr_node_obj->pers_lib_table
[nldr_node_obj->pers_libs];
} else {
if (root_prstnt)
persistent_dep_libs[i] = true;
/* Allocate library within phase */
dep_lib = &root->dep_libs_tree[nd_libs_loaded];
}
status = load_lib(nldr_node_obj, dep_lib,
dep_lib_uui_ds[i],
persistent_dep_libs[i], lib_path,
phase, depth);
if (!status) {
if ((status != 0) &&
!root_prstnt && persistent_dep_libs[i] &&
*nldr_node_obj->pf_phase_split) {
(nldr_node_obj->pers_libs)++;
} else {
if (!persistent_dep_libs[i] ||
!(*nldr_node_obj->pf_phase_split)) {
nd_libs_loaded++;
}
}
} else {
break;
}
}
}
/* Now we can load the root library */
if (!status) {
new_attrs = nldr_obj->ldr_attrs;
new_attrs.sym_arg = root;
new_attrs.rmm_handle = nldr_node_obj;
new_attrs.input_params = nldr_node_obj->priv_ref;
new_attrs.base_image = false;
status =
nldr_obj->ldr_fxns.load_fxn(root->lib, flags, &new_attrs,
&entry);
}
/*
* In case of failure, unload any dependent libraries that
* were loaded, and close the root library.
* (Persistent libraries are unloaded from the very top)
*/
if (status) {
if (phase != NLDR_EXECUTE) {
for (i = 0; i < nldr_node_obj->pers_libs; i++)
unload_lib(nldr_node_obj,
&nldr_node_obj->pers_lib_table[i]);
nldr_node_obj->pers_libs = 0;
}
for (i = 0; i < nd_libs_loaded; i++)
unload_lib(nldr_node_obj, &root->dep_libs_tree[i]);
if (root->lib)
nldr_obj->ldr_fxns.close_fxn(root->lib);
}
/* Going up one node in the dependency tree */
depth--;
kfree(dep_lib_uui_ds);
dep_lib_uui_ds = NULL;
kfree(persistent_dep_libs);
persistent_dep_libs = NULL;
return status;
}
/*
* ======== load_ovly ========
*/
static int load_ovly(struct nldr_nodeobject *nldr_node_obj,
enum nldr_phase phase)
{
struct nldr_object *nldr_obj = nldr_node_obj->nldr_obj;
struct ovly_node *po_node = NULL;
struct ovly_sect *phase_sects = NULL;
struct ovly_sect *other_sects_list = NULL;
u16 i;
u16 alloc_num = 0;
u16 other_alloc = 0;
u16 *ref_count = NULL;
u16 *other_ref = NULL;
u32 bytes;
struct ovly_sect *ovly_section;
int status = 0;
/* Find the node in the table */
for (i = 0; i < nldr_obj->ovly_nodes; i++) {
if (is_equal_uuid
(&nldr_node_obj->uuid, &nldr_obj->ovly_table[i].uuid)) {
/* Found it */
po_node = &(nldr_obj->ovly_table[i]);
break;
}
}
DBC_ASSERT(i < nldr_obj->ovly_nodes);
if (!po_node) {
status = -ENOENT;
goto func_end;
}
switch (phase) {
case NLDR_CREATE:
ref_count = &(po_node->create_ref);
other_ref = &(po_node->other_ref);
phase_sects = po_node->create_sects_list;
other_sects_list = po_node->other_sects_list;
break;
case NLDR_EXECUTE:
ref_count = &(po_node->execute_ref);
phase_sects = po_node->execute_sects_list;
break;
case NLDR_DELETE:
ref_count = &(po_node->delete_ref);
phase_sects = po_node->delete_sects_list;
break;
default:
DBC_ASSERT(false);
break;
}
if (ref_count == NULL)
goto func_end;
if (*ref_count != 0)
goto func_end;
/* 'Allocate' memory for overlay sections of this phase */
ovly_section = phase_sects;
while (ovly_section) {
/* allocate *//* page not supported yet */
/* reserve *//* align */
status = rmm_alloc(nldr_obj->rmm, 0, ovly_section->size, 0,
&(ovly_section->sect_run_addr), true);
if (!status) {
ovly_section = ovly_section->next_sect;
alloc_num++;
} else {
break;
}
}
if (other_ref && *other_ref == 0) {
/* 'Allocate' memory for other overlay sections
* (create phase) */
if (!status) {
ovly_section = other_sects_list;
while (ovly_section) {
/* page not supported *//* align */
/* reserve */
status =
rmm_alloc(nldr_obj->rmm, 0,
ovly_section->size, 0,
&(ovly_section->sect_run_addr),
true);
if (!status) {
ovly_section = ovly_section->next_sect;
other_alloc++;
} else {
break;
}
}
}
}
if (*ref_count == 0) {
if (!status) {
/* Load sections for this phase */
ovly_section = phase_sects;
while (ovly_section && !status) {
bytes =
(*nldr_obj->ovly_fxn) (nldr_node_obj->
priv_ref,
ovly_section->
sect_run_addr,
ovly_section->
sect_load_addr,
ovly_section->size,
ovly_section->page);
if (bytes != ovly_section->size)
status = -EPERM;
ovly_section = ovly_section->next_sect;
}
}
}
if (other_ref && *other_ref == 0) {
if (!status) {
/* Load other sections (create phase) */
ovly_section = other_sects_list;
while (ovly_section && !status) {
bytes =
(*nldr_obj->ovly_fxn) (nldr_node_obj->
priv_ref,
ovly_section->
sect_run_addr,
ovly_section->
sect_load_addr,
ovly_section->size,
ovly_section->page);
if (bytes != ovly_section->size)
status = -EPERM;
ovly_section = ovly_section->next_sect;
}
}
}
if (status) {
/* 'Deallocate' memory */
free_sects(nldr_obj, phase_sects, alloc_num);
free_sects(nldr_obj, other_sects_list, other_alloc);
}
func_end:
if (!status && (ref_count != NULL)) {
*ref_count += 1;
if (other_ref)
*other_ref += 1;
}
return status;
}
/*
* ======== remote_alloc ========
*/
static int remote_alloc(void **ref, u16 mem_sect, u32 size,
u32 align, u32 *dsp_address,
s32 segmnt_id, s32 req,
bool reserve)
{
struct nldr_nodeobject *hnode = (struct nldr_nodeobject *)ref;
struct nldr_object *nldr_obj;
struct rmm_target_obj *rmm;
u16 mem_phase_bit = MAXFLAGS;
u16 segid = 0;
u16 i;
u16 mem_sect_type;
u32 word_size;
struct rmm_addr *rmm_addr_obj = (struct rmm_addr *)dsp_address;
bool mem_load_req = false;
int status = -ENOMEM; /* Set to fail */
DBC_REQUIRE(hnode);
DBC_REQUIRE(mem_sect == DBLL_CODE || mem_sect == DBLL_DATA ||
mem_sect == DBLL_BSS);
nldr_obj = hnode->nldr_obj;
rmm = nldr_obj->rmm;
/* Convert size to DSP words */
word_size =
(size + nldr_obj->us_dsp_word_size -
1) / nldr_obj->us_dsp_word_size;
/* Modify memory 'align' to account for DSP cache line size */
align = lcm(GEM_CACHE_LINE_SIZE, align);
dev_dbg(bridge, "%s: memory align to 0x%x\n", __func__, align);
if (segmnt_id != -1) {
rmm_addr_obj->segid = segmnt_id;
segid = segmnt_id;
mem_load_req = req;
} else {
switch (hnode->phase) {
case NLDR_CREATE:
mem_phase_bit = CREATEDATAFLAGBIT;
break;
case NLDR_DELETE:
mem_phase_bit = DELETEDATAFLAGBIT;
break;
case NLDR_EXECUTE:
mem_phase_bit = EXECUTEDATAFLAGBIT;
break;
default:
DBC_ASSERT(false);
break;
}
if (mem_sect == DBLL_CODE)
mem_phase_bit++;
if (mem_phase_bit < MAXFLAGS)
segid = hnode->seg_id[mem_phase_bit];
/* Determine if there is a memory loading requirement */
if ((hnode->code_data_flag_mask >> mem_phase_bit) & 0x1)
mem_load_req = true;
}
mem_sect_type = (mem_sect == DBLL_CODE) ? DYNM_CODE : DYNM_DATA;
/* Find an appropriate segment based on mem_sect */
if (segid == NULLID) {
/* No memory requirements of preferences */
DBC_ASSERT(!mem_load_req);
goto func_cont;
}
if (segid <= MAXSEGID) {
DBC_ASSERT(segid < nldr_obj->dload_segs);
/* Attempt to allocate from segid first. */
rmm_addr_obj->segid = segid;
status =
rmm_alloc(rmm, segid, word_size, align, dsp_address, false);
if (status) {
dev_dbg(bridge, "%s: Unable allocate from segment %d\n",
__func__, segid);
}
} else {
/* segid > MAXSEGID ==> Internal or external memory */
DBC_ASSERT(segid == MEMINTERNALID || segid == MEMEXTERNALID);
/* Check for any internal or external memory segment,
* depending on segid. */
mem_sect_type |= segid == MEMINTERNALID ?
DYNM_INTERNAL : DYNM_EXTERNAL;
for (i = 0; i < nldr_obj->dload_segs; i++) {
if ((nldr_obj->seg_table[i] & mem_sect_type) !=
mem_sect_type)
continue;
status = rmm_alloc(rmm, i, word_size, align,
dsp_address, false);
if (!status) {
/* Save segid for freeing later */
rmm_addr_obj->segid = i;
break;
}
}
}
func_cont:
/* Haven't found memory yet, attempt to find any segment that works */
if (status == -ENOMEM && !mem_load_req) {
dev_dbg(bridge, "%s: Preferred segment unavailable, trying "
"another\n", __func__);
for (i = 0; i < nldr_obj->dload_segs; i++) {
/* All bits of mem_sect_type must be set */
if ((nldr_obj->seg_table[i] & mem_sect_type) !=
mem_sect_type)
continue;
status = rmm_alloc(rmm, i, word_size, align,
dsp_address, false);
if (!status) {
/* Save segid */
rmm_addr_obj->segid = i;
break;
}
}
}
return status;
}
static int remote_free(void **ref, u16 space, u32 dsp_address,
u32 size, bool reserve)
{
struct nldr_object *nldr_obj = (struct nldr_object *)ref;
struct rmm_target_obj *rmm;
u32 word_size;
int status = -ENOMEM; /* Set to fail */
DBC_REQUIRE(nldr_obj);
rmm = nldr_obj->rmm;
/* Convert size to DSP words */
word_size =
(size + nldr_obj->us_dsp_word_size -
1) / nldr_obj->us_dsp_word_size;
if (rmm_free(rmm, space, dsp_address, word_size, reserve))
status = 0;
return status;
}
/*
* ======== unload_lib ========
*/
static void unload_lib(struct nldr_nodeobject *nldr_node_obj,
struct lib_node *root)
{
struct dbll_attrs new_attrs;
struct nldr_object *nldr_obj = nldr_node_obj->nldr_obj;
u16 i;
DBC_ASSERT(root != NULL);
/* Unload dependent libraries */
for (i = 0; i < root->dep_libs; i++)
unload_lib(nldr_node_obj, &root->dep_libs_tree[i]);
root->dep_libs = 0;
new_attrs = nldr_obj->ldr_attrs;
new_attrs.rmm_handle = nldr_obj->rmm;
new_attrs.input_params = nldr_node_obj->priv_ref;
new_attrs.base_image = false;
new_attrs.sym_arg = root;
if (root->lib) {
/* Unload the root library */
nldr_obj->ldr_fxns.unload_fxn(root->lib, &new_attrs);
nldr_obj->ldr_fxns.close_fxn(root->lib);
}
/* Free dependent library list */
kfree(root->dep_libs_tree);
root->dep_libs_tree = NULL;
}
/*
* ======== unload_ovly ========
*/
static void unload_ovly(struct nldr_nodeobject *nldr_node_obj,
enum nldr_phase phase)
{
struct nldr_object *nldr_obj = nldr_node_obj->nldr_obj;
struct ovly_node *po_node = NULL;
struct ovly_sect *phase_sects = NULL;
struct ovly_sect *other_sects_list = NULL;
u16 i;
u16 alloc_num = 0;
u16 other_alloc = 0;
u16 *ref_count = NULL;
u16 *other_ref = NULL;
/* Find the node in the table */
for (i = 0; i < nldr_obj->ovly_nodes; i++) {
if (is_equal_uuid
(&nldr_node_obj->uuid, &nldr_obj->ovly_table[i].uuid)) {
/* Found it */
po_node = &(nldr_obj->ovly_table[i]);
break;
}
}
DBC_ASSERT(i < nldr_obj->ovly_nodes);
if (!po_node)
/* TODO: Should we print warning here? */
return;
switch (phase) {
case NLDR_CREATE:
ref_count = &(po_node->create_ref);
phase_sects = po_node->create_sects_list;
alloc_num = po_node->create_sects;
break;
case NLDR_EXECUTE:
ref_count = &(po_node->execute_ref);
phase_sects = po_node->execute_sects_list;
alloc_num = po_node->execute_sects;
break;
case NLDR_DELETE:
ref_count = &(po_node->delete_ref);
other_ref = &(po_node->other_ref);
phase_sects = po_node->delete_sects_list;
/* 'Other' overlay sections are unloaded in the delete phase */
other_sects_list = po_node->other_sects_list;
alloc_num = po_node->delete_sects;
other_alloc = po_node->other_sects;
break;
default:
DBC_ASSERT(false);
break;
}
DBC_ASSERT(ref_count && (*ref_count > 0));
if (ref_count && (*ref_count > 0)) {
*ref_count -= 1;
if (other_ref) {
DBC_ASSERT(*other_ref > 0);
*other_ref -= 1;
}
}
if (ref_count && *ref_count == 0) {
/* 'Deallocate' memory */
free_sects(nldr_obj, phase_sects, alloc_num);
}
if (other_ref && *other_ref == 0)
free_sects(nldr_obj, other_sects_list, other_alloc);
}
/*
* ======== find_in_persistent_lib_array ========
*/
static bool find_in_persistent_lib_array(struct nldr_nodeobject *nldr_node_obj,
struct dbll_library_obj *lib)
{
s32 i = 0;
for (i = 0; i < nldr_node_obj->pers_libs; i++) {
if (lib == nldr_node_obj->pers_lib_table[i].lib)
return true;
}
return false;
}
#ifdef CONFIG_TIDSPBRIDGE_BACKTRACE
/**
* nldr_find_addr() - Find the closest symbol to the given address based on
* dynamic node object.
*
* @nldr_node: Dynamic node object
* @sym_addr: Given address to find the dsp symbol
* @offset_range: offset range to look for dsp symbol
* @offset_output: Symbol Output address
* @sym_name: String with the dsp symbol
*
* This function finds the node library for a given address and
* retrieves the dsp symbol by calling dbll_find_dsp_symbol.
*/
int nldr_find_addr(struct nldr_nodeobject *nldr_node, u32 sym_addr,
u32 offset_range, void *offset_output, char *sym_name)
{
int status = 0;
bool status1 = false;
s32 i = 0;
struct lib_node root = { NULL, 0, NULL };
DBC_REQUIRE(refs > 0);
DBC_REQUIRE(offset_output != NULL);
DBC_REQUIRE(sym_name != NULL);
pr_debug("%s(0x%x, 0x%x, 0x%x, 0x%x, %s)\n", __func__, (u32) nldr_node,
sym_addr, offset_range, (u32) offset_output, sym_name);
if (nldr_node->dynamic && *nldr_node->pf_phase_split) {
switch (nldr_node->phase) {
case NLDR_CREATE:
root = nldr_node->create_lib;
break;
case NLDR_EXECUTE:
root = nldr_node->execute_lib;
break;
case NLDR_DELETE:
root = nldr_node->delete_lib;
break;
default:
DBC_ASSERT(false);
break;
}
} else {
/* for Overlay nodes or non-split Dynamic nodes */
root = nldr_node->root;
}
status1 = dbll_find_dsp_symbol(root.lib, sym_addr,
offset_range, offset_output, sym_name);
/* If symbol not found, check dependent libraries */
if (!status1)
for (i = 0; i < root.dep_libs; i++) {
status1 = dbll_find_dsp_symbol(
root.dep_libs_tree[i].lib, sym_addr,
offset_range, offset_output, sym_name);
if (status1)
/* Symbol found */
break;
}
/* Check persistent libraries */
if (!status1)
for (i = 0; i < nldr_node->pers_libs; i++) {
status1 = dbll_find_dsp_symbol(
nldr_node->pers_lib_table[i].lib, sym_addr,
offset_range, offset_output, sym_name);
if (status1)
/* Symbol found */
break;
}
if (!status1) {
pr_debug("%s: Address 0x%x not found in range %d.\n",
__func__, sym_addr, offset_range);
status = -ESPIPE;
}
return status;
}
#endif