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view src/ui/mfw/mfw_sima.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 92abb46dc1ba
children
line wrap: on
line source

/*
+--------------------------------------------------------------------+
| PROJECT: GSM-MFW (?)                  $Workfile:: mfw_sima.h      $|
| $Author:: Es                          $Revision::  1              $|
| CREATED: 14.10.98                     $Modtime:: 6.10.99 12:21    $|
| STATE  : code                                                      |
+--------------------------------------------------------------------+

	PURPOSE :  Types definitions for MMI framework
    .

	Jan 16, 2006 DR: OMAPS00061460 - Shashi Shekar B.S.
	Description: SAT Icon support
	Solution : SAT icon support added.

*/

#ifndef DEF_MFW_SIMA_HEADER
#define DEF_MFW_SIMA_HEADER

/* Contents of the Elementary Files from SIM card */
typedef struct
{
  UBYTE display_condition;
  UBYTE service_provider [LONG_NAME];
} T_EF_SPN;

// Shashi Shekar B.S., a0876501, Jan 16, 2006, DR: OMAPS00061460
#ifdef FF_MMI_SAT_ICON
/* SIM record read parameters */
typedef struct
{
	USHORT data_id;			/* EF file to be read */
	USHORT offset;			/* Offset to file to be read */
	UBYTE  record_number;	/* Record number of EF file */
	UBYTE  len;				/* Length of record */
	UBYTE  max_length;		/* Max records */
} T_SIM_ACCESS_PARAM;

/* Structure to hold the Image instance contents */
typedef struct
{
  UBYTE  image_width;				/* Image Width */
  UBYTE  image_height;				/* Image Height*/
  UBYTE  image_coding;				/* 11 -> B/W, 21 -> Color image, xx -> RFU */
  USHORT image_instance_file_id;	/* File Id of the image instance */
  USHORT image_offset;				/* Offset of the image instance */
  USHORT image_instance_length;     /* Length of image instance data */
} T_IMAGE_INSTANCE;

/* Contents of the Elementary Files from SIM card for IMG */
typedef struct
{
  UBYTE number_of_image_instance;
  T_IMAGE_INSTANCE image_instance;
} T_EF_IMG;
#endif

EXTERN void  sima_init       (void);
EXTERN void  rAT_PlusCFUNP   (T_SIM_MMI_INSERT_IND * mmi_insert_ind);
EXTERN UBYTE qAT_PlusCPINNO  (void);
EXTERN void  sim_read_sim    (USHORT data_id, UBYTE len, UBYTE max_length);
// Shashi Shekar B.S., a0876501, Jan 16, 2006, DR: OMAPS00061460
#ifdef FF_MMI_SAT_ICON
EXTERN void  sim_read_sim_icon(T_SIM_ACCESS_PARAM *sim_icon_read_param);
#endif
EXTERN void  sim_read_sim_cb (SHORT table_id);
EXTERN void  sim_write_sim   (USHORT data_id, UBYTE * data, UBYTE length);
EXTERN void  sim_write_sim_cb(SHORT table_id);


#endif