Re: [PATCH v2 73/76] ARC: [Review] Multi-platform image #6: cpu-to-dma-addr optional

2013-01-18 Thread Arnd Bergmann
On Friday 18 January 2013, Vineet Gupta wrote: > All the current platforms can work with 0x8000_ based dma_addr_t > since the Bus Bridges typically ignore the top bit (the only excpetion > was Angel4 PCI-AHM bridge which we no longer care for). > That way we don't need plat-specific cpu-addr

[PATCH v2 73/76] ARC: [Review] Multi-platform image #6: cpu-to-dma-addr optional

2013-01-18 Thread Vineet Gupta
All the current platforms can work with 0x8000_ based dma_addr_t since the Bus Bridges typically ignore the top bit (the only excpetion was Angel4 PCI-AHM bridge which we no longer care for). That way we don't need plat-specific cpu-addr to bus-addr conversion. Hooks still provided - just in

[PATCH v2 73/76] ARC: [Review] Multi-platform image #6: cpu-to-dma-addr optional

2013-01-18 Thread Vineet Gupta
All the current platforms can work with 0x8000_ based dma_addr_t since the Bus Bridges typically ignore the top bit (the only excpetion was Angel4 PCI-AHM bridge which we no longer care for). That way we don't need plat-specific cpu-addr to bus-addr conversion. Hooks still provided - just in

Re: [PATCH v2 73/76] ARC: [Review] Multi-platform image #6: cpu-to-dma-addr optional

2013-01-18 Thread Arnd Bergmann
On Friday 18 January 2013, Vineet Gupta wrote: All the current platforms can work with 0x8000_ based dma_addr_t since the Bus Bridges typically ignore the top bit (the only excpetion was Angel4 PCI-AHM bridge which we no longer care for). That way we don't need plat-specific cpu-addr to