Accessing Registers

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hello All,

Presently I am working with DMA and to DMA operation the start bit must be set in DMA status Register. Now I am working with kernel modules and How to access the Register derectly from a module.

I would like to know the structure of the memory map of the linux, so that if I write some value in the member of structure ,it shoud get effected immediately .

For Example

      tsec_t *regs = (tsec_t *)(TSEC_BASE_ADDR);

     regs->dmactrl &= ~(DMACTRL_GRS | DMACTRL_GTS);
     regs->dmactrl |= (DMACTRL_GRS | DMACTRL_GTS);
The above source was taken from U-boot.
I am using U-boot as bootloader and ppc linux.

Regards

Jhoney




[Index of Archives]     [Newbies FAQ]     [Linux Kernel Mentors]     [Linux Kernel Development]     [IETF Annouce]     [Git]     [Networking]     [Security]     [Bugtraq]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux SCSI]     [Linux ACPI]
  Powered by Linux