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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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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 > _____________________________________

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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 > _____________________________________ _____________________________________

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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 > > > > > > _____________________________________ > > > > > > > > > > > > > > _____________________________________ >

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