On Thu, May 08, 2025 at 10:15:19PM -0500, Andrew Ballance wrote: > From: Fiona Behrens <me@xxxxxxxxxx> > > Move the non arch specific PIO size to linux/io.h. > > This allows rust to access `PIO_OFFSET`, `PIO_MASK` and > `PIO_RESERVED`. This is required to implement `IO_COND` in rust. ... > +/* > + * We encode the physical PIO addresses (0-0xffff) into the I know this is the original text, but we have a chance to improve it a bit by saying range more explicitly: * We encode the physical PIO addresses (0x0000-0xffff) into the > + * pointer by offsetting them with a constant (0x10000) and > + * assuming that all the low addresses are always PIO. That means > + * we can do some sanity checks on the low bits, and don't > + * need to just take things for granted. > + */ > +#define PIO_OFFSET 0x10000UL > +#define PIO_MASK 0x0ffffUL > +#define PIO_RESERVED 0x40000UL > +#endif -- With Best Regards, Andy Shevchenko
