FreeCalypso > hg > fc-tourmaline
view cdg-hybrid/cdginc/p_8010_136_simdrv_sap.h @ 220:0ed36de51973
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 | 35f7a1dc9f7d |
| children |
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/* +--------------------------------------------------------------------------+ | PROJECT : PROTOCOL STACK | | FILE : p_8010_136_simdrv_sap.h | | SOURCE : "sap\8010_136_SIMDRV_SAP.pdf" | | LastModified : "2004-06-10" | | IdAndVersion : "8010.136.03.009" | | SrcFileTime : "Thu Nov 29 09:27:56 2007" | | Generated by CCDGEN_2.5.5A on Fri Oct 14 21:41:52 2016 | | !!DO NOT MODIFY!!DO NOT MODIFY!!DO NOT MODIFY!! | +--------------------------------------------------------------------------+ */ /* PRAGMAS * PREFIX : SIMDRV * COMPATIBILITY_DEFINES : NO * ALWAYS_ENUM_IN_VAL_FILE: YES * ENABLE_GROUP: YES * CAPITALIZE_TYPENAME: NO */ #ifndef P_8010_136_SIMDRV_SAP_H #define P_8010_136_SIMDRV_SAP_H #define CDG_ENTER__P_8010_136_SIMDRV_SAP_H #define CDG_ENTER__FILENAME _P_8010_136_SIMDRV_SAP_H #define CDG_ENTER__P_8010_136_SIMDRV_SAP_H__FILE_TYPE CDGINC #define CDG_ENTER__P_8010_136_SIMDRV_SAP_H__LAST_MODIFIED _2004_06_10 #define CDG_ENTER__P_8010_136_SIMDRV_SAP_H__ID_AND_VERSION _8010_136_03_009 #define CDG_ENTER__P_8010_136_SIMDRV_SAP_H__SRC_FILE_TIME _Thu_Nov_29_09_27_56_2007 #include "CDG_ENTER.h" #undef CDG_ENTER__P_8010_136_SIMDRV_SAP_H #undef CDG_ENTER__FILENAME #include "p_8010_136_simdrv_sap.val" /* * typedef between var and valtab enums */ #ifndef __T_SIMDRV_reset_return_val__ #define __T_SIMDRV_reset_return_val__ typedef T_SIMDRV_VAL_reset_return_val T_SIMDRV_reset_return_val; #endif #ifndef __T_SIMDRV_len__ #define __T_SIMDRV_len__ typedef T_SIMDRV_VAL_len T_SIMDRV_len; #endif #ifndef __T_SIMDRV_sw1_2__ #define __T_SIMDRV_sw1_2__ typedef T_SIMDRV_VAL_sw1_2 T_SIMDRV_sw1_2; #endif #ifndef __T_SIMDRV_cla__ #define __T_SIMDRV_cla__ typedef T_SIMDRV_VAL_cla T_SIMDRV_cla; #endif #ifndef __T_SIMDRV_ins__ #define __T_SIMDRV_ins__ typedef T_SIMDRV_VAL_ins T_SIMDRV_ins; #endif #ifndef __T_SIMDRV_voltage_select__ #define __T_SIMDRV_voltage_select__ typedef T_SIMDRV_VAL_voltage_select T_SIMDRV_voltage_select; #endif #ifndef __T_SIMDRV_config_requested__ #define __T_SIMDRV_config_requested__ typedef T_SIMDRV_VAL_config_requested T_SIMDRV_config_requested; #endif #ifndef __T_SIMDRV_reader_id__ #define __T_SIMDRV_reader_id__ typedef T_SIMDRV_VAL_reader_id T_SIMDRV_reader_id; #endif #ifndef __T_SIMDRV_atr_string_info__ #define __T_SIMDRV_atr_string_info__ /* * SIM Card Info * CCDGEN:WriteStruct_Count==1283 */ typedef struct { U8 c_atr_string; /*< 0: 1> counter */ U8 atr_string[SIMDRV_SIZE_ATR_INFO]; /*< 1: 33> SIM Card Answer to reset string */ U8 _align0; /*< 34: 1> alignment */ U8 _align1; /*< 35: 1> alignment */ } T_SIMDRV_atr_string_info; #endif #ifndef __T_SIMDRV_result_info__ #define __T_SIMDRV_result_info__ /* * Result Buffer * CCDGEN:WriteStruct_Count==1285 */ typedef struct { U16 len; /*< 0: 2> T_SIMDRV_len, Maximum length of expected data */ U16 c_result; /*< 2: 2> counter */ U8 *result; /*< 4: 4> pointer codetransparent to Result byte */ } T_SIMDRV_result_info; #endif #ifndef __T_SIMDRV_data_info__ #define __T_SIMDRV_data_info__ /* * Data element info * CCDGEN:WriteStruct_Count==1287 */ typedef struct { U8 _align0; /*< 0: 1> alignment */ U8 _align1; /*< 1: 1> alignment */ U8 _align2; /*< 2: 1> alignment */ U8 c_data; /*< 3: 1> counter */ U8 *data; /*< 4: 4> pointer codetransparent to Data element */ } T_SIMDRV_data_info; #endif #ifndef __T_SIMDRV_cmd_header__ #define __T_SIMDRV_cmd_header__ /* * Transparent command header * CCDGEN:WriteStruct_Count==1289 */ typedef struct { U8 cla; /*< 0: 1> T_SIMDRV_cla, Class Byte */ U8 ins; /*< 1: 1> T_SIMDRV_ins, instruction code */ U8 p1; /*< 2: 1> Parameter 1 of the SIM APDU */ U8 p2; /*< 3: 1> Parameter 2 of the SIM APDU */ } T_SIMDRV_cmd_header; #endif #ifndef __T_SIMDRV_config_characteristics__ #define __T_SIMDRV_config_characteristics__ /* * Configuration Characteristics * CCDGEN:WriteStruct_Count==1291 */ typedef struct { U8 uicc_characteristics; /*< 0: 1> UICC Characteristics */ U8 _align0; /*< 1: 1> alignment */ U8 _align1; /*< 2: 1> alignment */ U8 _align2; /*< 3: 1> alignment */ } T_SIMDRV_config_characteristics; #endif /* * End of substructure section, begin of primitive definition section */ #ifndef __T_SIMDRV_DUMMY__ #define __T_SIMDRV_DUMMY__ /* * * CCDGEN:WriteStruct_Count==1293 */ typedef struct { T_SIMDRV_atr_string_info *ptr_atr_string_info; /*< 0: 4> pointer to SIM Card Info */ U8 reset_return_val; /*< 4: 1> T_SIMDRV_reset_return_val, Reset return value */ U8 _align0; /*< 5: 1> alignment */ U8 _align1; /*< 6: 1> alignment */ U8 _align2; /*< 7: 1> alignment */ T_SIMDRV_result_info *ptr_result_info; /*< 8: 4> pointer to Result Buffer */ U16 len; /*< 12: 2> T_SIMDRV_len, Maximum length of expected data */ U8 _align3; /*< 14: 1> alignment */ U8 _align4; /*< 15: 1> alignment */ T_SIMDRV_data_info *ptr_data_info; /*< 16: 4> pointer to Data element info */ U16 sw1_2; /*< 20: 2> T_SIMDRV_sw1_2, Status Words */ U8 cla; /*< 22: 1> T_SIMDRV_cla, Class Byte */ U8 ins; /*< 23: 1> T_SIMDRV_ins, instruction code */ T_SIMDRV_cmd_header cmd_header; /*< 24: 4> Transparent command header */ U8 voltage_select; /*< 28: 1> T_SIMDRV_voltage_select, Perform Voltage Selection */ U8 p1; /*< 29: 1> Parameter 1 of the SIM APDU */ U8 p2; /*< 30: 1> Parameter 2 of the SIM APDU */ U8 config_requested; /*< 31: 1> T_SIMDRV_config_requested, Configuration Characteristics requested */ T_SIMDRV_config_characteristics *ptr_config_characteristics; /*< 32: 4> pointer to Configuration Characteristics */ U8 reader_id; /*< 36: 1> T_SIMDRV_reader_id, Reader Id */ U8 uicc_characteristics; /*< 37: 1> UICC Characteristics */ U8 _align5; /*< 38: 1> alignment */ U8 _align6; /*< 39: 1> alignment */ } T_SIMDRV_DUMMY; #endif #include "CDG_LEAVE.h" #endif