Hi Arnd,
On Wed, Jun 29, 2022 at 10:21 AM Arnd Bergmann <arnd@xxxxxxxxxx> wrote:
> Regarding the amiga_chip_alloc(), I don't know what this means
> for caching. If chip memory is cache-coherent (either uncached
> or by snooping), then there should not be any
> dma_map()/dma_unmap() for that case, but instead the
> amiga_chip_alloc() function should return both the pointer
> and the dma_addr_t token.
Chip RAM is mapped uncached.
Amifb remaps it using ioremap_wt() to get a write-through frame buffer.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
