FreeCalypso > hg > fc-tourmaline
view cdg-hybrid/cdginc/p_gsim.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_gsim.h | | SOURCE : "sap\gsim.pdf" | | LastModified : "2003-02-04" | | IdAndVersion : "8441.113.99.004" | | SrcFileTime : "Thu Nov 29 09:43:12 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 : NONE * COMPATIBILITY_DEFINES : NO (require PREFIX) * ALWAYS_ENUM_IN_VAL_FILE: NO * ENABLE_GROUP: NO * CAPITALIZE_TYPENAME: NO */ #ifndef P_GSIM_H #define P_GSIM_H #define CDG_ENTER__P_GSIM_H #define CDG_ENTER__FILENAME _P_GSIM_H #define CDG_ENTER__P_GSIM_H__FILE_TYPE CDGINC #define CDG_ENTER__P_GSIM_H__LAST_MODIFIED _2003_02_04 #define CDG_ENTER__P_GSIM_H__ID_AND_VERSION _8441_113_99_004 #define CDG_ENTER__P_GSIM_H__SRC_FILE_TIME _Thu_Nov_29_09_43_12_2007 #include "CDG_ENTER.h" #undef CDG_ENTER__P_GSIM_H #undef CDG_ENTER__FILENAME #include "p_gsim.val" #ifndef __T_imsi_field__ #define __T_imsi_field__ /* * international mobile subscriber identity * CCDGEN:WriteStruct_Count==1693 */ typedef struct { U8 c_field; /*< 0: 1> length of imsi */ U8 field[MAX_IMSI]; /*< 1: 9> imsi */ U8 _align0; /*< 10: 1> alignment */ U8 _align1; /*< 11: 1> alignment */ } T_imsi_field; #endif /* * End of substructure section, begin of primitive definition section */ #ifndef __T_GSIM_UPDATE_REQ__ #define __T_GSIM_UPDATE_REQ__ /* * * CCDGEN:WriteStruct_Count==1694 */ typedef struct { U8 sim_gprs_invalid; /*< 0: 1> SIM invalid for GPRS service */ U8 gu; /*< 1: 1> GPRS update status */ U8 _align0; /*< 2: 1> alignment */ U8 _align1; /*< 3: 1> alignment */ U32 ptmsi; /*< 4: 4> packet temporary mobile subscriber identity */ U8 ptmsi_signature_flag; /*< 8: 1> P-TMSI Signature flag */ U8 rai[7]; /*< 9: 7> routing_area information */ } T_GSIM_UPDATE_REQ; #endif #ifndef __T_GSIM_STORE_KC_REQ__ #define __T_GSIM_STORE_KC_REQ__ /* * * CCDGEN:WriteStruct_Count==1695 */ typedef struct { U8 gsim_kc[8]; /*< 0: 8> GPRS ciphering key */ U8 gsim_cksn; /*< 8: 1> GPRS ciphering key sequence number */ U8 _align0; /*< 9: 1> alignment */ U8 _align1; /*< 10: 1> alignment */ U8 _align2; /*< 11: 1> alignment */ } T_GSIM_STORE_KC_REQ; #endif #ifndef __T_GSIM_INSERTED_IND__ #define __T_GSIM_INSERTED_IND__ /* * * CCDGEN:WriteStruct_Count==1696 */ typedef struct { U8 sim_gprs_invalid; /*< 0: 1> SIM invalid for GPRS service */ U8 gu; /*< 1: 1> GPRS update status */ U8 rai[7]; /*< 2: 7> routing_area information */ U8 _align0; /*< 9: 1> alignment */ U8 _align1; /*< 10: 1> alignment */ U8 _align2; /*< 11: 1> alignment */ U32 ptmsi; /*< 12: 4> packet temporary mobile subscriber identity */ U32 tmsi; /*< 16: 4> temporary mobile subscriber identity */ T_imsi_field imsi_field; /*< 20: 12> international mobile subscriber identity */ U8 gsim_kc[8]; /*< 32: 8> GPRS ciphering key */ U8 gsim_cksn; /*< 40: 1> GPRS ciphering key sequence number */ U8 _align3; /*< 41: 1> alignment */ U16 acc_contr_class; /*< 42: 2> Access Control Class */ } T_GSIM_INSERTED_IND; #endif #ifndef __T_GSIM_REMOVED_IND__ #define __T_GSIM_REMOVED_IND__ /* * * CCDGEN:WriteStruct_Count==1697 */ typedef struct { U8 dummy; /*< 0: 1> no parameters */ } T_GSIM_REMOVED_IND; #endif #ifndef __T_GSIM_AUTHENTICATION_REQ__ #define __T_GSIM_AUTHENTICATION_REQ__ /* * * CCDGEN:WriteStruct_Count==1698 */ typedef struct { U8 rand[SIZE_RAND]; /*< 0: 16> authentication parameter rand */ U8 gsim_cksn; /*< 16: 1> GPRS ciphering key sequence number */ U8 _align0; /*< 17: 1> alignment */ U8 _align1; /*< 18: 1> alignment */ U8 _align2; /*< 19: 1> alignment */ } T_GSIM_AUTHENTICATION_REQ; #endif #ifndef __T_GSIM_AUTHENTICATION_CNF__ #define __T_GSIM_AUTHENTICATION_CNF__ /* * * CCDGEN:WriteStruct_Count==1699 */ typedef struct { U8 sres[SIZE_SRES]; /*< 0: 4> authentication parameter Sres */ U8 gsim_kc[SIZE_KC]; /*< 4: 8> GPRS ciphering key */ } T_GSIM_AUTHENTICATION_CNF; #endif #include "CDG_LEAVE.h" #endif