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path: root/drivers/staging/tidspbridge/pmgr/cod.c
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Diffstat (limited to 'drivers/staging/tidspbridge/pmgr/cod.c')
-rw-r--r--drivers/staging/tidspbridge/pmgr/cod.c537
1 files changed, 0 insertions, 537 deletions
diff --git a/drivers/staging/tidspbridge/pmgr/cod.c b/drivers/staging/tidspbridge/pmgr/cod.c
deleted file mode 100644
index 6c29379baf60..000000000000
--- a/drivers/staging/tidspbridge/pmgr/cod.c
+++ /dev/null
@@ -1,537 +0,0 @@
-/*
- * cod.c
- *
- * DSP-BIOS Bridge driver support functions for TI OMAP processors.
- *
- * This module implements DSP code management for the DSP/BIOS Bridge
- * environment. It is mostly a thin wrapper.
- *
- * This module provides an interface for loading both static and
- * dynamic code objects onto DSP systems.
- *
- * 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>
-#include <linux/fs.h>
-#include <linux/uaccess.h>
-
-/* ----------------------------------- DSP/BIOS Bridge */
-#include <dspbridge/dbdefs.h>
-
-/* ----------------------------------- Platform Manager */
-/* Include appropriate loader header file */
-#include <dspbridge/dbll.h>
-
-/* ----------------------------------- This */
-#include <dspbridge/cod.h>
-
-/*
- * ======== cod_manager ========
- */
-struct cod_manager {
- struct dbll_tar_obj *target;
- struct dbll_library_obj *base_lib;
- bool loaded; /* Base library loaded? */
- u32 entry;
- struct dbll_fxns fxns;
- struct dbll_attrs attrs;
- char sz_zl_file[COD_MAXPATHLENGTH];
-};
-
-/*
- * ======== cod_libraryobj ========
- */
-struct cod_libraryobj {
- struct dbll_library_obj *dbll_lib;
- struct cod_manager *cod_mgr;
-};
-
-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_open_fxn) dbll_open,
- (dbll_read_sect_fxn) dbll_read_sect,
- (dbll_unload_fxn) dbll_unload,
-};
-
-static bool no_op(void);
-
-/*
- * File operations (originally were under kfile.c)
- */
-static s32 cod_f_close(struct file *filp)
-{
- /* Check for valid handle */
- if (!filp)
- return -EFAULT;
-
- filp_close(filp, NULL);
-
- /* we can't use 0 here */
- return 0;
-}
-
-static struct file *cod_f_open(const char *psz_file_name, const char *sz_mode)
-{
- mm_segment_t fs;
- struct file *filp;
-
- fs = get_fs();
- set_fs(get_ds());
-
- /* ignore given mode and open file as read-only */
- filp = filp_open(psz_file_name, O_RDONLY, 0);
-
- if (IS_ERR(filp))
- filp = NULL;
-
- set_fs(fs);
-
- return filp;
-}
-
-static s32 cod_f_read(void __user *pbuffer, s32 size, s32 count,
- struct file *filp)
-{
- /* check for valid file handle */
- if (!filp)
- return -EFAULT;
-
- if ((size > 0) && (count > 0) && pbuffer) {
- u32 dw_bytes_read;
- mm_segment_t fs;
-
- /* read from file */
- fs = get_fs();
- set_fs(get_ds());
- dw_bytes_read = filp->f_op->read(filp, pbuffer, size * count,
- &(filp->f_pos));
- set_fs(fs);
-
- if (!dw_bytes_read)
- return -EBADF;
-
- return dw_bytes_read / size;
- }
-
- return -EINVAL;
-}
-
-static s32 cod_f_seek(struct file *filp, s32 offset, s32 origin)
-{
- loff_t dw_cur_pos;
-
- /* check for valid file handle */
- if (!filp)
- return -EFAULT;
-
- /* based on the origin flag, move the internal pointer */
- dw_cur_pos = filp->f_op->llseek(filp, offset, origin);
-
- if ((s32) dw_cur_pos < 0)
- return -EPERM;
-
- /* we can't use 0 here */
- return 0;
-}
-
-static s32 cod_f_tell(struct file *filp)
-{
- loff_t dw_cur_pos;
-
- if (!filp)
- return -EFAULT;
-
- /* Get current position */
- dw_cur_pos = filp->f_op->llseek(filp, 0, SEEK_CUR);
-
- if ((s32) dw_cur_pos < 0)
- return -EPERM;
-
- return dw_cur_pos;
-}
-
-/*
- * ======== cod_close ========
- */
-void cod_close(struct cod_libraryobj *lib)
-{
- struct cod_manager *hmgr;
-
- hmgr = lib->cod_mgr;
- hmgr->fxns.close_fxn(lib->dbll_lib);
-
- kfree(lib);
-}
-
-/*
- * ======== cod_create ========
- * Purpose:
- * Create an object to manage code on a DSP system.
- * This object can be used to load an initial program image with
- * arguments that can later be expanded with
- * dynamically loaded object files.
- *
- */
-int cod_create(struct cod_manager **mgr, char *str_zl_file)
-{
- struct cod_manager *mgr_new;
- struct dbll_attrs zl_attrs;
- int status = 0;
-
- /* assume failure */
- *mgr = NULL;
-
- mgr_new = kzalloc(sizeof(struct cod_manager), GFP_KERNEL);
- if (mgr_new == NULL)
- return -ENOMEM;
-
- /* Set up loader functions */
- mgr_new->fxns = ldr_fxns;
-
- /* initialize the ZL module */
- mgr_new->fxns.init_fxn();
-
- zl_attrs.alloc = (dbll_alloc_fxn) no_op;
- zl_attrs.free = (dbll_free_fxn) no_op;
- zl_attrs.fread = (dbll_read_fxn) cod_f_read;
- zl_attrs.fseek = (dbll_seek_fxn) cod_f_seek;
- zl_attrs.ftell = (dbll_tell_fxn) cod_f_tell;
- zl_attrs.fclose = (dbll_f_close_fxn) cod_f_close;
- zl_attrs.fopen = (dbll_f_open_fxn) cod_f_open;
- zl_attrs.sym_lookup = NULL;
- zl_attrs.base_image = true;
- zl_attrs.log_write = NULL;
- zl_attrs.log_write_handle = NULL;
- zl_attrs.write = NULL;
- zl_attrs.rmm_handle = NULL;
- zl_attrs.input_params = NULL;
- zl_attrs.sym_handle = NULL;
- zl_attrs.sym_arg = NULL;
-
- mgr_new->attrs = zl_attrs;
-
- status = mgr_new->fxns.create_fxn(&mgr_new->target, &zl_attrs);
-
- if (status) {
- cod_delete(mgr_new);
- return -ESPIPE;
- }
-
- /* return the new manager */
- *mgr = mgr_new;
-
- return 0;
-}
-
-/*
- * ======== cod_delete ========
- * Purpose:
- * Delete a code manager object.
- */
-void cod_delete(struct cod_manager *cod_mgr_obj)
-{
- if (cod_mgr_obj->base_lib) {
- if (cod_mgr_obj->loaded)
- cod_mgr_obj->fxns.unload_fxn(cod_mgr_obj->base_lib,
- &cod_mgr_obj->attrs);
-
- cod_mgr_obj->fxns.close_fxn(cod_mgr_obj->base_lib);
- }
- if (cod_mgr_obj->target) {
- cod_mgr_obj->fxns.delete_fxn(cod_mgr_obj->target);
- cod_mgr_obj->fxns.exit_fxn();
- }
- kfree(cod_mgr_obj);
-}
-
-/*
- * ======== cod_get_base_lib ========
- * Purpose:
- * Get handle to the base image DBL library.
- */
-int cod_get_base_lib(struct cod_manager *cod_mgr_obj,
- struct dbll_library_obj **plib)
-{
- int status = 0;
-
- *plib = (struct dbll_library_obj *)cod_mgr_obj->base_lib;
-
- return status;
-}
-
-/*
- * ======== cod_get_base_name ========
- */
-int cod_get_base_name(struct cod_manager *cod_mgr_obj, char *sz_name,
- u32 usize)
-{
- int status = 0;
-
- if (usize <= COD_MAXPATHLENGTH)
- strlcpy(sz_name, cod_mgr_obj->sz_zl_file, usize);
- else
- status = -EPERM;
-
- return status;
-}
-
-/*
- * ======== cod_get_entry ========
- * Purpose:
- * Retrieve the entry point of a loaded DSP program image
- *
- */
-int cod_get_entry(struct cod_manager *cod_mgr_obj, u32 *entry_pt)
-{
- *entry_pt = cod_mgr_obj->entry;
-
- return 0;
-}
-
-/*
- * ======== cod_get_loader ========
- * Purpose:
- * Get handle to the DBLL loader.
- */
-int cod_get_loader(struct cod_manager *cod_mgr_obj,
- struct dbll_tar_obj **loader)
-{
- int status = 0;
-
- *loader = (struct dbll_tar_obj *)cod_mgr_obj->target;
-
- return status;
-}
-
-/*
- * ======== cod_get_section ========
- * Purpose:
- * Retrieve the starting address and length of a section in the COFF file
- * given the section name.
- */
-int cod_get_section(struct cod_libraryobj *lib, char *str_sect,
- u32 *addr, u32 *len)
-{
- struct cod_manager *cod_mgr_obj;
- int status = 0;
-
- *addr = 0;
- *len = 0;
- if (lib != NULL) {
- cod_mgr_obj = lib->cod_mgr;
- status = cod_mgr_obj->fxns.get_sect_fxn(lib->dbll_lib, str_sect,
- addr, len);
- } else {
- status = -ESPIPE;
- }
-
- return status;
-}
-
-/*
- * ======== cod_get_sym_value ========
- * Purpose:
- * Retrieve the value for the specified symbol. The symbol is first
- * searched for literally and then, if not found, searched for as a
- * C symbol.
- *
- */
-int cod_get_sym_value(struct cod_manager *cod_mgr_obj, char *str_sym,
- u32 *pul_value)
-{
- struct dbll_sym_val *dbll_sym;
-
- dev_dbg(bridge, "%s: cod_mgr_obj: %p str_sym: %s pul_value: %p\n",
- __func__, cod_mgr_obj, str_sym, pul_value);
- if (cod_mgr_obj->base_lib) {
- if (!cod_mgr_obj->fxns.
- get_addr_fxn(cod_mgr_obj->base_lib, str_sym, &dbll_sym)) {
- if (!cod_mgr_obj->fxns.
- get_c_addr_fxn(cod_mgr_obj->base_lib, str_sym,
- &dbll_sym))
- return -ESPIPE;
- }
- } else {
- return -ESPIPE;
- }
-
- *pul_value = dbll_sym->value;
-
- return 0;
-}
-
-/*
- * ======== cod_load_base ========
- * Purpose:
- * Load the initial program image, optionally with command-line arguments,
- * on the DSP system managed by the supplied handle. The program to be
- * loaded must be the first element of the args array and must be a fully
- * qualified pathname.
- * Details:
- * if num_argc doesn't match the number of arguments in the args array, the
- * args array is searched for a NULL terminating entry, and argc is
- * recalculated to reflect this. In this way, we can support NULL
- * terminating args arrays, if num_argc is very large.
- */
-int cod_load_base(struct cod_manager *cod_mgr_obj, u32 num_argc, char *args[],
- cod_writefxn pfn_write, void *arb, char *envp[])
-{
- dbll_flags flags;
- struct dbll_attrs save_attrs;
- struct dbll_attrs new_attrs;
- int status;
- u32 i;
-
- /*
- * Make sure every argv[] stated in argc has a value, or change argc to
- * reflect true number in NULL terminated argv array.
- */
- for (i = 0; i < num_argc; i++) {
- if (args[i] == NULL) {
- num_argc = i;
- break;
- }
- }
-
- /* set the write function for this operation */
- cod_mgr_obj->fxns.get_attrs_fxn(cod_mgr_obj->target, &save_attrs);
-
- new_attrs = save_attrs;
- new_attrs.write = (dbll_write_fxn) pfn_write;
- new_attrs.input_params = arb;
- new_attrs.alloc = (dbll_alloc_fxn) no_op;
- new_attrs.free = (dbll_free_fxn) no_op;
- new_attrs.log_write = NULL;
- new_attrs.log_write_handle = NULL;
-
- /* Load the image */
- flags = DBLL_CODE | DBLL_DATA | DBLL_SYMB;
- status = cod_mgr_obj->fxns.load_fxn(cod_mgr_obj->base_lib, flags,
- &new_attrs,
- &cod_mgr_obj->entry);
- if (status)
- cod_mgr_obj->fxns.close_fxn(cod_mgr_obj->base_lib);
-
- if (!status)
- cod_mgr_obj->loaded = true;
- else
- cod_mgr_obj->base_lib = NULL;
-
- return status;
-}
-
-/*
- * ======== cod_open ========
- * Open library for reading sections.
- */
-int cod_open(struct cod_manager *hmgr, char *sz_coff_path,
- u32 flags, struct cod_libraryobj **lib_obj)
-{
- int status = 0;
- struct cod_libraryobj *lib = NULL;
-
- *lib_obj = NULL;
-
- lib = kzalloc(sizeof(struct cod_libraryobj), GFP_KERNEL);
- if (lib == NULL)
- status = -ENOMEM;
-
- if (!status) {
- lib->cod_mgr = hmgr;
- status = hmgr->fxns.open_fxn(hmgr->target, sz_coff_path, flags,
- &lib->dbll_lib);
- if (!status)
- *lib_obj = lib;
- }
-
- if (status)
- pr_err("%s: error status 0x%x, sz_coff_path: %s flags: 0x%x\n",
- __func__, status, sz_coff_path, flags);
- return status;
-}
-
-/*
- * ======== cod_open_base ========
- * Purpose:
- * Open base image for reading sections.
- */
-int cod_open_base(struct cod_manager *hmgr, char *sz_coff_path,
- dbll_flags flags)
-{
- int status = 0;
- struct dbll_library_obj *lib;
-
- /* if we previously opened a base image, close it now */
- if (hmgr->base_lib) {
- if (hmgr->loaded) {
- hmgr->fxns.unload_fxn(hmgr->base_lib, &hmgr->attrs);
- hmgr->loaded = false;
- }
- hmgr->fxns.close_fxn(hmgr->base_lib);
- hmgr->base_lib = NULL;
- }
- status = hmgr->fxns.open_fxn(hmgr->target, sz_coff_path, flags, &lib);
- if (!status) {
- /* hang onto the library for subsequent sym table usage */
- hmgr->base_lib = lib;
- strncpy(hmgr->sz_zl_file, sz_coff_path, COD_MAXPATHLENGTH - 1);
- hmgr->sz_zl_file[COD_MAXPATHLENGTH - 1] = '\0';
- }
-
- if (status)
- pr_err("%s: error status 0x%x sz_coff_path: %s\n", __func__,
- status, sz_coff_path);
- return status;
-}
-
-/*
- * ======== cod_read_section ========
- * Purpose:
- * Retrieve the content of a code section given the section name.
- */
-int cod_read_section(struct cod_libraryobj *lib, char *str_sect,
- char *str_content, u32 content_size)
-{
- int status = 0;
-
- if (lib != NULL)
- status =
- lib->cod_mgr->fxns.read_sect_fxn(lib->dbll_lib, str_sect,
- str_content, content_size);
- else
- status = -ESPIPE;
-
- return status;
-}
-
-/*
- * ======== no_op ========
- * Purpose:
- * No Operation.
- *
- */
-static bool no_op(void)
-{
- return true;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-20 08:31:31 +0000