2841, plus some fixes to make the patches work on the Alpha. Seems to
improve the NCR driver a lot. We probably should try to incorporate
any updates that have happened since, too.
(This fixes problems with the printf format fixes i checked in yesterday.
ptrdiff_t is an 'int' on the i386 but a 'long' on the alpha, so the cast
really is necessary... *sigh*)
- No more distinction between i/o-mapped and memory-mapped
devices. It's all "bus space" now, and space tags
differentiate the space with finer grain than the
bus chipset tag.
- Add memory barrier methods.
- Implement space alloc/free methods.
- Implement region read/write methods (like memcpy to/from
bus space).
This interface provides a better abstraction for dealing with
machine-independent chipset drivers.
multi-channel driver), or to SCSI_CHANNEL_ONLY_ONE if a
single-channel driver.
(2) use scsiprint() rather than a locally-defined autoconfig print
function, and kill any locally-defined print function.
a char *, because that's what was really intended, and because
if the print function modifies the string, various things could become
unhappy (so the string should _not_ be modified).
(1) use pci_{io,mem}_find(), to determine what I/O or memory
space is described by a given PCI configuration space
mapping register, and bus_{io,mem}_map() to map it.
(2) use pci_intr_map(), pci_intr_string(), and
pci_intr_{,dis}establish() to manipulate and print info about
PCI interrupts.
(5) make pci functions take as an argument a machine-dependent
cookie, to allow more flexibility in implementation.
- split softc size and match/attach out from cfdriver into
a new struct cfattach.
- new "attach" directive for files.*. May specify the name of
the cfattach structure, so that devices may be easily attached
to parents with different autoconfiguration semantics.
assumes that pci_map_mem/pci_map_io provide interfaces which utilitize
bus_{io,mem}_handle_t's, or types which are compatible. This works on the
i386, and will change eventually anyway.)
for U_INT8, INT16, U_INT16 definitions. Convert structs and
definitions in ncr_reg.h (e.g. ncrcmd, the chip register layout, etc.)
to use these definitions.
Add INB_OFF, INL_OFF, and OUTL_OFF macros to access specified offsets into
I/O or memory space. Convert register dumps (etc.), and cache snoop
test to use these new macros, so that nothing accesses the device
I/O or memory space directly. (Register dumps now come from I/O space
if NCR_IOMAPPED. They used to bogusly use memory space.)
Add a new relocation type for script entries, RELOC_KVAR. Allow scripts
access to mono_time.tv_sec, mono_time, and ncr_cache via this
mechanism, and convert scripts to use it. An ncrcmd is only 32 bits
wide, and KVAs may be > 32 bits wide (e.g. on Alpha), leading to
linker problems. This is a safer way to do this anyway; relocation is
more deterministic this way, and doesn't rely on KVAs not looking like
other relocation types.
Panic if an unmatched relocation other than 'zero' is specified. That's
now a script bug. (This used to be used to convert KVAs of kernel
variables referenced in the script to PCI bus physical addresses,
and that is now handled by RELOC_KVAR relocations.)
Figure out and print the model of chip.
thorpej