FreeCalypso > hg > fc-tourmaline
view cdg-hybrid/cdginc/p_mmi.val @ 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_mmi.val | | SOURCE : "sap\mmi.pdf" | | LastModified : "2004-08-20" | | IdAndVersion : "6147.113.97.103" | | SrcFileTime : "Thu Nov 29 09:46:32 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_MMI_VAL #define P_MMI_VAL #define CDG_ENTER__P_MMI_VAL #define CDG_ENTER__FILENAME _P_MMI_VAL #define CDG_ENTER__P_MMI_VAL__FILE_TYPE CDGINC #define CDG_ENTER__P_MMI_VAL__LAST_MODIFIED _2004_08_20 #define CDG_ENTER__P_MMI_VAL__ID_AND_VERSION _6147_113_97_103 #define CDG_ENTER__P_MMI_VAL__SRC_FILE_TIME _Thu_Nov_29_09_46_32_2007 #include "CDG_ENTER.h" #undef CDG_ENTER__P_MMI_VAL #undef CDG_ENTER__FILENAME /* * Value constants for VAL_control */ #define CTL_NORMAL (0x0) /* normal operation */ #define CTL_HIDDEN (0x1) /* hidden attribut (used for cursor control) */ /* * Value constants for VAL_content */ #define CON_TEXT (0x1) /* sdu contains text */ #define CON_CURSOR (0x2) /* positioning the cursor */ /* * Value constants for VAL_call_tone */ #define CT_RING (0x0) /* ringing tone */ #define CT_AUTH_NUM_UNOBTAIN (0x10) /* authentication or number unobtainable */ #define CT_BUSY (0x11) /* busy tone */ #define CT_CONGESTION (0x12) /* congestion tone */ #define CT_CALL_DROPPED (0x13) /* call dropped */ #define CT_RADIO_ACK (0x14) /* radio acknowledge */ #define CT_CALL_WAIT (0x15) /* call waiting */ #define DTMF_0 (0x16) /* digit 0 */ #define DTMF_1 (0x17) /* digit 1 */ #define DTMF_2 (0x18) /* digit 2 */ #define DTMF_3 (0x19) /* digit 3 */ #define DTMF_4 (0x1a) /* digit 4 */ #define DTMF_5 (0x1b) /* digit 5 */ #define DTMF_6 (0x1c) /* digit 6 */ #define DTMF_7 (0x1d) /* digit 7 */ #define DTMF_8 (0x1e) /* digit 8 */ #define DTMF_9 (0x1f) /* digit 9 */ #define DTMF_A (0x20) /* character A */ #define DTMF_B (0x21) /* character B */ #define DTMF_C (0x22) /* character C */ #define DTMF_D (0x23) /* character D */ #define DTMF_STAR (0x24) /* character * */ #define DTMF_HASH (0x25) /* character # */ #define CT_KEYBEEP (0x26) /* Keybeep */ #define CT_RINGING (0x27) /* ringing tone */ /* * Value constants for VAL_key_stat */ #define KEY_STAT_PRS (0x0) /* pressed */ #define KEY_STAT_REL (0x1) /* released */ /* * Value constants for VAL_mute_stat */ #define MUTE_STAT_OFF (0x0) /* audio path is not muted */ #define MUTE_STAT_ON (0x1) /* audio path is muted */ /* * Value constants for VAL_speech_stat */ #define SPEECH_STAT_OFF (0x0) /* audio path switched off */ #define SPEECH_STAT_ON (0x1) /* audio path switched on */ /* * Value constants for VAL_tone_stat */ #define TONE_SWT_OFF (0x0) /* switch off */ #define TONE_SWT_ON_SINGLE (0x1) /* switch on one time */ #define TONE_SWT_ON_PERIODIC (0x2) /* switch on periodically */ #define TONE_SWT_ON_SILENT (0x3) /* switch on silent */ /* * Value constants for VAL_mode */ #define INDICATION_SINGLE (0x0) /* one single request */ #define INDICATION_ON_CHANGE (0x1) /* new indication after intervall change */ #define INDICATION_PERIODIC (0x2) /* new indication after time period */ #define INDICATION_OFF (0x3) /* no further indications */ /* * Value constants for VAL_modus */ #define CBCH_ACCEPT (0x0) /* accept msg_id and dcs_id */ #define CBCH_IGNORE (0x1) /* ignore msg_id and dcs_id */ #define CBCH_HOMEZONE (0x2) /* Request homezone message after cell reseletion */ #define MMI_CBCH_STOP (0xff) /* stop cbch reading */ /* * Value constants for VAL_ids_mode */ #define IDS_SPEECH (0x0) /* Speech mode */ #define IDS_T_DATA (0x1) /* Transparent Data */ #define IDS_T_FAX (0x2) /* Transparent Fax */ #define IDS_NT_DATA (0x5) /* Non-Transparent Data */ #define IDS_NT_FAX (0x6) /* Non-Transparent Fax */ /* * Value constants for VAL_vocoder_state */ #define VOCODER_DISABLE (0x0) /* Enable the vocoder */ #define VOCODER_ENABLE (0x1) /* Disable the vocoder */ /* * user defined constants */ #define CBCH_MSG_LEN (0x58) #define MAX_SDU_LEN (0x1) #define MAX_IDENTS (0x14) #define MAX_IDENTS_SAT (0xf) #define MAX_RPD_MSG_LEN (0x78) #include "CDG_LEAVE.h" #endif