view cdg-hybrid/sap/dti.pdf @ 268:f2e52cab0a73

abb_inth.c: check all interrupt causes, not just one The original code used if - else if - else if etc constructs, thus the first detected interrupt was the only one handled. However, Iota ITSTATREG is a clear-on-read register, thus if we only handle the first detected interrupt and skip checking the others, then the other interrupts will be lost, if more than one interrupt happened to occur in one ABB interrupt handling cycle - a form of rare race condition. Change the code to check all interrupts that were read in this cycle.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 13 Jun 2021 18:17:53 +0000
parents 35f7a1dc9f7d
children
line wrap: on
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;********************************************************************************
;*** File           : dti.pdf
;*** Creation       : Wed Mar 11 09:57:58 CST 2009
;*** XSLT Processor : Apache Software Foundation / http://xml.apache.org/xalan-j / supports XSLT-Ver: 1
;*** Copyright      : (c) Texas Instruments AG, Berlin Germany 2002
;********************************************************************************
;*** Document Type  : Service Access Point Specification
;*** Document Name  : dti
;*** Document No.   : 8411.110.00.007
;*** Document Date  : 2000-06-29
;*** Document Status: BEING_PROCESSED
;*** Document Author: MG
;********************************************************************************



PRAGMA 	SRC_FILE_TIME 	"Thu Nov 29 09:40:22 2007"
PRAGMA 	LAST_MODIFIED 	"2000-06-29"
PRAGMA 	ID_AND_VERSION 	"8411.110.00.007"






VALTAB 	VAL_c_id
VAL 	0 	DTI_NSAPI_0 	"escape mechanism for future extensions"
VAL 	1 	DTI_NSAPI_1 	"Point-To-Multipoint Multicast information"
VAL 	2 	DTI_NSAPI_2 	"reserved for future use"
VAL 	3 	DTI_NSAPI_3 	"reserved for future use"
VAL 	4 	DTI_NSAPI_4 	"reserved for future use"
VAL 	5 	DTI_NSAPI_5 	"dynamically allocated NSAPI value"
VAL 	6 	DTI_NSAPI_6 	"dynamically allocated NSAPI value"
VAL 	7 	DTI_NSAPI_7 	"dynamically allocated NSAPI value"
VAL 	8 	DTI_NSAPI_8 	"dynamically allocated NSAPI value"
VAL 	9 	DTI_NSAPI_9 	"dynamically allocated NSAPI value"
VAL 	10 	DTI_NSAPI_10 	"dynamically allocated NSAPI value"
VAL 	11 	DTI_NSAPI_11 	"dynamically allocated NSAPI value"
VAL 	12 	DTI_NSAPI_12 	"dynamically allocated NSAPI value"
VAL 	13 	DTI_NSAPI_13 	"dynamically allocated NSAPI value"
VAL 	14 	DTI_NSAPI_14 	"dynamically allocated NSAPI value"
VAL 	15 	DTI_NSAPI_15 	"dynamically allocated NSAPI value"
VAL 	5 	DTI_C_ID_DEFAULT 	"Default value for c_id"

VALTAB 	VAL_p_id
VAL 	0x21 	DTI_PID_IP 	"simple ip packet"
VAL 	0x2D 	DTI_PID_CTCP 	"Van Jacobson compressed TCP/IP header"
VAL 	0x2F 	DTI_PID_UTCP 	"Van Jacobson uncompressed TCP/IP header"
VAL 	0x00 	DTI_PID_FRAME 	"PPP frame"

VALTAB 	VAL_op_ack
VAL 	0x01 	OP_ACK 	"acknowledged operation mode"
VAL 	0x00 	OP_UNACK 	"unacknowledged operation mode"

VALTAB 	VAL_st_flow
VAL 	0 	DTI_FLOW_ON 	"flow control is inactive"
VAL 	1 	DTI_FLOW_OFF 	"flow control is active"

VALTAB 	VAL_st_line_sa
VAL 	0 	DTI_SA_ON 	"SA is inactive"
VAL 	1 	DTI_SA_OFF 	"SA is active"

VALTAB 	VAL_st_line_sb
VAL 	0 	DTI_SB_ON 	"SB is inactive"
VAL 	1 	DTI_SB_OFF 	"SB is active"

VALTAB 	VAL_st_escape
VAL 	0 	DTI_ESC_OFF 	"No escape detected"
VAL 	1 	DTI_ESC_ON 	"Escape detected"




VAR 	list_len 	"length in octets of whole data" 	S


VAR 	first 	"pointer to first generic data descriptor" 	L


VAR 	next 	"next generic data descriptor" 	L


VAR 	len 	"length of content in octets" 	S


VAR 	buffer 	"buffer content" 	B


VAR 	tui 	"transmission unit identifier" 	S


VAR 	c_id 	"channel identifier" 	B

VAL 	@p_dti - VAL_c_id@ 	

VAR 	p_id 	"protocol identifier" 	B

VAL 	@p_dti - VAL_p_id@ 	

VAR 	op_ack 	"operation mode" 	B

VAL 	@p_dti - VAL_op_ack@ 	

VAR 	st_flow 	"flow control state" 	B

VAL 	@p_dti - VAL_st_flow@ 	

VAR 	st_line_sa 	"line state sa" 	B

VAL 	@p_dti - VAL_st_line_sa@ 	

VAR 	st_line_sb 	"line state sb" 	B

VAL 	@p_dti - VAL_st_line_sb@ 	

VAR 	st_escape 	"escape state" 	B

VAL 	@p_dti - VAL_st_escape@ 	

VAR 	l_buf 	"length of content in bit" 	S


VAR 	o_buf 	"offset of content in bit" 	S


VAR 	buf 	"test data" 	B





COMP 	desc_list 	 "list of generic data descriptors"
{
 	list_len 	 ; length in octets of whole data
 	first 	 ; pointer to first generic data descriptor
}



COMP 	desc 	 "generic data descriptor"
{
 	next 	 ; next generic data descriptor
 	len 	 ; length of content in octets
 	buffer 	[1] 	 ; buffer content
}



COMP 	sdu 	 "test data"
{
 	l_buf 	 ; length of content in bit
 	o_buf 	 ; offset of content in bit
 	buf 	[1] 	 ; test data
}






; DTI_READY_IND 	0x7700
; DTI_GETDATA_REQ 	0x3700
; DTI_DATA_REQ 	0x3701
; DTI_DATA_IND 	0x7701
; DTI_DATA_TEST_REQ 	0x3702
; DTI_DATA_TEST_IND 	0x7702
; DTI_DUMMY_REQ 	0x3703



PRIM 	DTI_READY_IND 	0x7700
{
 	tui 	 ; transmission unit identifier
 	c_id 	 ; channel identifier
 	op_ack 	 ; operation mode (acknowledged or not)
}






PRIM 	DTI_GETDATA_REQ 	0x3700
{
 	tui 	 ; transmission unit identifier
 	c_id 	 ; channel identifier
 	op_ack 	 ; operation mode (acknowledged or not)
}






PRIM 	DTI_DATA_REQ 	0x3701
{
 	tui 	 ; transmission unit identifier
 	c_id 	 ; channel identifier
 	p_id 	 ; protocol identifier
 	op_ack 	 ; operation mode (acknowledged or not)
 	st_flow 	 ; flow control state
 	st_line_sa 	 ; line state sa
 	st_line_sb 	 ; line state sb
 	st_escape 	 ; escape state
 	desc_list 	 ; list of generic data descriptors
}






PRIM 	DTI_DATA_IND 	0x7701
{
 	tui 	 ; transmission unit identifier
 	c_id 	 ; channel identifier
 	p_id 	 ; protocol identifier
 	op_ack 	 ; operation mode (acknowledged or not)
 	st_flow 	 ; flow control state
 	st_line_sa 	 ; line state sa
 	st_line_sb 	 ; line state sb
 	st_escape 	 ; escape state
 	desc_list 	 ; list of generic data descriptors
}






PRIM 	DTI_DATA_TEST_REQ 	0x3702
{
 	tui 	 ; transmission unit identifier
 	c_id 	 ; channel identifier
 	p_id 	 ; protocol identifier
 	op_ack 	 ; operation mode (acknowledged or not)
 	st_flow 	 ; flow control state
 	st_line_sa 	 ; line state sa
 	st_line_sb 	 ; line state sb
 	st_escape 	 ; escape state
 	sdu 	 ; test data
}






PRIM 	DTI_DATA_TEST_IND 	0x7702
{
 	tui 	 ; transmission unit identifier
 	c_id 	 ; channel identifier
 	p_id 	 ; protocol identifier
 	op_ack 	 ; operation mode (acknowledged or not)
 	st_flow 	 ; flow control state
 	st_line_sa 	 ; line state sa
 	st_line_sb 	 ; line state sb
 	st_escape 	 ; escape state
 	sdu 	 ; test data
}






PRIM 	DTI_DUMMY_REQ 	0x3703
{
 	desc 	 ; generic data descriptor
}