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view src/cs/riviera/rvt/rvt_def_i.h @ 220:0ed36de51973

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ABB semaphore protection overhaul The ABB semaphone protection logic that came with TCS211 from TI was broken in several ways: * Some semaphore-protected functions were called from Application_Initialize() context. NU_Obtain_Semaphore() called with NU_SUSPEND fails with NU_INVALID_SUSPEND in this context, but the return value wasn't checked, and NU_Release_Semaphore() would be called unconditionally at the end. The latter call would increment the semaphore count past 1, making the semaphore no longer binary and thus no longer effective for resource protection. The fix is to check the return value from NU_Obtain_Semaphore() and skip the NU_Release_Semaphore() call if the semaphore wasn't properly obtained. * Some SPI hardware manipulation was being done before entering the semaphore- protected critical section. The fix is to reorder the code: first obtain the semaphore, then do everything else. * In the corner case of L1/DSP recovery, l1_abb_power_on() would call some non-semaphore-protected ABB & SPI init functions. The fix is to skip those calls in the case of recovery. * A few additional corner cases existed, all of which are fixed by making ABB semaphore protection 100% consistent for all ABB functions and code paths. There is still one remaining problem of priority inversion: suppose a low- priority task calls an ABB function, and some medium-priority task just happens to preempt right in the middle of that semaphore-protected ABB operation. Then the high-priority SPI task is locked out for a non-deterministic time until that medium-priority task finishes its work and goes back to sleep. This priority inversion problem remains outstanding for now.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 26 Apr 2021 20:55:25 +0000
parents 4e78acac3d88
children
line wrap: on
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/*******************************************************************************
 *
 * rvt_def_i.h
 *
 * (C) Texas Instruments, all rights reserved
 *
 * Version number	: 0.1
 *
 * History			: 0.1 (7/5/2000) - Created
 *
 * Date             : 7/5/2000
 *
 * Author           : Guido Pagana  g-pagana@ti.com
 *
 ******************************************************************************/

#ifndef __RVT_DEF_I_H__
#define __RVT_DEF_I_H__

#include "rvt/rvt_gen.h"

#include "rvt/rvt_pool_size.h"	/* Stack & Memory Bank sizes definitions */

/************************* Internal definitions **************************/


/* Define the maximum number of msg lost before sending an alert */
#define RVT_MAX_LOST_TRACE_MSG (1)

/* Trace user database (must end using RVT_END_OF_TABLE) */
#define RVT_END_OF_TABLE	{"", RVT_INVALID_HEADER, NULL}

#define RVT_USER_ID_MAPPING { \
	{"RV",		RVT_RV_HEADER,		NULL}, \
	{"L1",		RVT_L1_HEADER,		NULL}, \
	{"L23",		RVT_L23_HEADER,		NULL}, \
	{"TM",		RVT_TM_HEADER,		NULL}, \
	{"RNET",	RVT_RNET_HEADER,	NULL}, \
	{"PROF",	RVT_PROF_HEADER,	NULL}, \
	{"GTTBACK",	RVT_GTTBACK_HEADER,	NULL}, \
	{"OTHER",	RVT_OTHER_HEADER,	NULL}, \
	{"AT",		RVT_AT_HEADER,		NULL}, \
	{"EXTUI",	RVT_EXTUI_HEADER,	NULL}, \
	{"TCH",		RVT_TCH_HEADER,		NULL}, \
	{"KEEPALIVE",	RVT_KEEPALIVE_HEADER,	NULL}, \
	RVT_END_OF_TABLE \
}


/* Trace task mailbox */
#define RVT_TRACE_MAILBOX	RVF_TASK_MBOX_0

typedef struct
{	T_RVT_NAME			user_name[RVT_NAME_MAX_LEN];
	T_RVT_USER_ID		user_id;
	RVT_CALLBACK_FUNC	rx_callback_func;
} T_RVT_USER_DB;


/* Define the unique message type used in RVT */
#define RVT_TRACE_RQST_ID ( (RVT_USE_ID & 0xFFFF0000) | ( 0x1) | 0x001)

typedef struct
{	T_RV_HDR		header;
	T_RVT_USER_ID	user_id;
	T_RVT_FORMAT	format;
	T_RVT_MSG_LG	msg_length;
}	T_RVT_TRACE_RQST;


/* Trace message header size */
#define RVT_HEADER_SIZE	(sizeof(T_RVT_TRACE_RQST) )

#define TRACE_TASK_STACK_SIZE TRACE_STACK_SIZE


#define TRACE_MB_SIZE		      (TRACE_MB1_SIZE)
#define TRACE_MB_WATERMARK	  (TRACE_MB_SIZE)

/* Decimal to hexadecimal conversion table */
static const char Num2Char[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};

/*
** Number of messages lost. Causes:
**
**    __ 'Format' differs from RVT_ASCII_FORMAT and RVT_BINARY_FORMAT.
**   |  __ 'Message ID' differs from RVT_TRACE_RQST_ID.
**   | |  __ rvf_read_mbox has returned NULL.
**   | | |  __ Failed to send the message.
**   | | | |  __ Insufficient resources.
**   | | | | |  __ Trace Module not started.
**   |_|_|_|_|_|____________________________________________________
**  | ¦ ¦ ¦ ¦ ¦ ¦   |               |               |               |
**  | ¦ ¦ ¦ ¦ ¦ ¦   |               |               |               |
**  |_¦_¦_¦_¦_¦_¦_._|_._._._._._._._|_._._._._._._._|_._._._._._._._|
*/
typedef union
{
	struct
	{
		INT32  count                  : 26;
		INT32  not_started            : 1;
		INT32  insufficient_resources : 1;
		INT32  message_not_sent       : 1;
		INT32  message_empty          : 1;
		INT32  unknown_request        : 1;
		INT32  unknown_format         : 1;
	} bit_mask;
	UINT32     overall_value;
} T_RVT_LOST_MSG;

extern T_RVT_LOST_MSG  rvt_lost_msg_cpt;

/* Prototypes */
BOOLEAN rvt_name_cmp( char * str1, char * str2);
void rvt_activate_RX_HISR (void);                                    
void rvt_RX_process (void);

#endif /* __RVT_DEF_I_H__ */