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Hi all! Please, does anyone know if we can bypass the HWI interrupts configuration made by DSP/BIOS HWI manager? I'd like to configure HWI manually because I think that the overhead introduced by DSP/BIOS is greater then what my application permits. I can't simply eliminate DSP/BIOS because it manages the tasks in my application. Thank you very much. Regards, Alexandre |
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bypassing BIOS' HWI manager
Started by ●September 11, 2002
Reply by ●September 13, 20022002-09-13
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Hi., You can bypass the DSP/BIOS dispatcher by using the assembly macros HWI_enter and HWI_exit. You need to write a asm stub function and invoke the C-ISR from the asm function as shown below. asm_stub: HWI_enter ...your Register Masks call the C isr. HWI_exit ... Your register Masks. You need to give the ISR function as the asm function name in the HWI properties. Hope this helps. Harish ----- Original Message ----- From: "Alexandre Freire da Silva Osorio" <> Date: Wednesday, September 11, 2002 10:37 pm Subject: [c6x] bypassing BIOS' HWI manager > Hi all! > > Please, does anyone know if we can bypass the HWI interrupts > configuration made by DSP/BIOS HWI manager? I'd like to configure > HWI manually because I think that the overhead introduced by > DSP/BIOS is greater then what my application permits. I can't > simply eliminate DSP/BIOS because it manages the tasks in my > application. > Thank you very much. > > Regards, > Alexandre > _____________________________________ > Note: If you do a simple "reply" with your email client, only the > author of this message will receive your answer. You need to do a > "reply all" if you want your answer to be distributed to the > entire group. > > _____________________________________ > About this discussion group: > > To Join: Send an email to > > To Post: Send an email to > > To Leave: Send an email to > > Archives: http://www.yahoogroups.com/group/c6x > > Other Groups: http://www.dsprelated.com > ">http://docs.yahoo.com/info/terms/ > |
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Reply by ●September 13, 20022002-09-13
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Harish, Thank you very much. More specifically, the problem in my system is that there are interruption losts between HWI_INT8 (DMA Ch. 0), HWI_INT9 (DMA Ch. 2), HWI_INT11 (DMA Ch. 1) and HWI_INT12 (DMA Ch. 3), probably because DSP/BIOS uses HWI_RESERVED0 and HWI_RESERVED1 for Dispatcher and these are higher priority interruptions. I can't disable Dispatcher because it's used by Timer0 (HWI_INT14), that DSP/BIOS uses to generate PRD_tick. Do you know how can I solve this? My system can't lose any DMA interruption to run properly, and this was working fine until I have decided to include DSP/BIOS in it. Thank you again. Regards, Alexandre -----Original Message----- From: Harish Thampi S [mailto:] Sent: Friday, September 13, 2002 1:24 AM To: Alexandre Freire da Silva Osorio Cc: Subject: Re: [c6x] bypassing BIOS' HWI manager Hi., You can bypass the DSP/BIOS dispatcher by using the assembly macros HWI_enter and HWI_exit. You need to write a asm stub function and invoke the C-ISR from the asm function as shown below. asm_stub: HWI_enter ...your Register Masks call the C isr. HWI_exit ... Your register Masks. You need to give the ISR function as the asm function name in the HWI properties. Hope this helps. Harish ----- Original Message ----- From: "Alexandre Freire da Silva Osorio" <> Date: Wednesday, September 11, 2002 10:37 pm Subject: [c6x] bypassing BIOS' HWI manager > Hi all! > > Please, does anyone know if we can bypass the HWI interrupts > configuration made by DSP/BIOS HWI manager? I'd like to configure > HWI manually because I think that the overhead introduced by > DSP/BIOS is greater then what my application permits. I can't > simply eliminate DSP/BIOS because it manages the tasks in my > application. > Thank you very much. > > Regards, > Alexandre > _____________________________________ > Note: If you do a simple "reply" with your email client, only the > author of this message will receive your answer. You need to do a > "reply all" if you want your answer to be distributed to the > entire group. > > _____________________________________ > About this discussion group: > > To Join: Send an email to > > To Post: Send an email to > > To Leave: Send an email to > > Archives: http://www.yahoogroups.com/group/c6x > > Other Groups: http://www.dsprelated.com > ">http://docs.yahoo.com/info/terms/ > _____________________________________ Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. _____________________________________ About this discussion group: To Join: Send an email to To Post: Send an email to To Leave: Send an email to Archives: http://www.yahoogroups.com/group/c6x Other Groups: http://www.dsprelated.com ">http://docs.yahoo.com/info/terms/ |
Reply by ●September 13, 20022002-09-13
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Hi., I think disabling RTDX in the Input/output->RTDX module will help you to work around this problem. Though I have not tried it out. Regards Harish ----- Original Message ----- From: "Alexandre Freire da Silva Osorio" <> Date: Friday, September 13, 2002 6:23 pm Subject: RE: [c6x] bypassing BIOS' HWI manager > Harish, > > Thank you very much. > > More specifically, the problem in my system is that there are > interruption losts between HWI_INT8 (DMA Ch. 0), HWI_INT9 (DMA Ch. > 2), HWI_INT11 (DMA Ch. 1) and HWI_INT12 (DMA Ch. 3), probably > because DSP/BIOS uses HWI_RESERVED0 and HWI_RESERVED1 for > Dispatcher and these are higher priority interruptions. I can't > disable Dispatcher because it's used by Timer0 (HWI_INT14), that > DSP/BIOS uses to generate PRD_tick. > > Do you know how can I solve this? My system can't lose any DMA > interruption to run properly, and this was working fine until I > have decided to include DSP/BIOS in it. > > Thank you again. > > Regards, > Alexandre > -----Original Message----- > From: Harish Thampi S [mailto:] > Sent: Friday, September 13, 2002 1:24 AM > To: Alexandre Freire da Silva Osorio > Cc: > Subject: Re: [c6x] bypassing BIOS' HWI manager > Hi., > > You can bypass the DSP/BIOS dispatcher by using the assembly macros > HWI_enter and HWI_exit. You need to write a asm stub function and > invoke the C-ISR from the asm function as shown below. > > asm_stub: > HWI_enter ...your Register Masks > call the C isr. > HWI_exit ... Your register Masks. > > You need to give the ISR function as the asm function name in the HWI > properties. > > Hope this helps. > > Harish > ----- Original Message ----- > From: "Alexandre Freire da Silva Osorio" <> > Date: Wednesday, September 11, 2002 10:37 pm > Subject: [c6x] bypassing BIOS' HWI manager > > > Hi all! > > > > Please, does anyone know if we can bypass the HWI interrupts > > configuration made by DSP/BIOS HWI manager? I'd like to > configure > > HWI manually because I think that the overhead introduced by > > DSP/BIOS is greater then what my application permits. I can't > > simply eliminate DSP/BIOS because it manages the tasks in my > > application. > > Thank you very much. > > > > Regards, > > Alexandre > > > > > > _____________________________________ > > Note: If you do a simple "reply" with your email client, only > the > > author of this message will receive your answer. You need to do > a > > "reply all" if you want your answer to be distributed to the > > entire group. > > > > _____________________________________ > > About this discussion group: > > > > To Join: Send an email to > > > > To Post: Send an email to > > > > To Leave: Send an email to > > > > Archives: http://www.yahoogroups.com/group/c6x > > > > Other Groups: http://www.dsprelated.com > > > > > > ">http://docs.yahoo.com/info/terms/ > > > > > > _____________________________________ > Note: If you do a simple "reply" with your email client, only the > author of this message will receive your answer. You need to do a > "reply all" if you want your answer to be distributed to the > entire group. > > _____________________________________ > About this discussion group: > > To Join: Send an email to > > To Post: Send an email to > > To Leave: Send an email to > > Archives: http://www.yahoogroups.com/group/c6x > > Other Groups: http://www.dsprelated.com > ">http://docs.yahoo.com/info/terms/ |
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**************************Disclaimer********************************************\ ****** Information contained in this E-MAIL being proprietary to Wipro Limited is 'privileged' and 'confidential' and intended for use only by the individual or entity to which it is addressed. You are notified that any use, copying or dissemination of the information contained in the E-MAIL in any manner whatsoever is strictly prohibited. ********************************************************************************\ ******** |
