and pointers don't always have the same size, e.g. the __mips_n32 ABI
(ILP32) has 64 bit registers but 32 bit pointers.
On mips introduce PRIptr to fix the format specifier for (u)intptr_t.
Prefix PRI64 and PRIptr with underscores because macro names starting with
PRI[a-zX] are reserved for future use.
Approved by: kib (mentor)
architecture macros (__mips_n64, __powerpc64__) when 64 bit types (and
corresponding macros) are different from 32 bit. [1]
Correct the type of INT64_MIN, INT64_MAX and UINT64_MAX.
Define (U)INTMAX_C as an alias for (U)INT64_C matching the type definition
for (u)intmax_t. Do this on all architectures for consistency.
Suggested by: bde [1]
Approved by: kib (mentor)
of (unsigned) int __attribute__((__mode__(__DI__))). This aligns better
with macros such as (U)INT64_C, (U)INT64_MAX, etc. which assume (u)int64_t
has type (unsigned) long long.
The mode attribute was used because long long wasn't standardised until
C99. Nowadays compilers should support long long and use of the mode
attribute is discouraged according to GCC Internals documentation.
The type definition has to be marked with __extension__ to support
compilation with "-std=c89 -pedantic".
Discussed with: bde
Approved by: kib (mentor)
On some architectures UCHAR_MAX and USHRT_MAX had type unsigned int.
However, lacking integer suffixes for types smaller than int, their type
should correspond to that of an object of type unsigned char (or short)
when used in an expression with objects of type int. In that case unsigned
char (short) are promoted to int (i.e. signed) so the type of UCHAR_MAX and
USHRT_MAX should also be int.
Where MIN/MAX constants implicitly have the correct type the suffix has
been removed.
While here, correct some comments.
Reviewed by: bde
Approved by: kib (mentor)
It was used mainly to discover and fix some 64-bit portability problems
before 64-bit arches were widely available.
Discussed with: bde
Approved by: kib (mentor)
The macros here for generating coprocessor 0 accessors are named like:
MIPS_RDRW32_COP0
That macro would produce mips_rd_<register>() and mips_wr_<register>()
inlines to access the specified register by name from C. The problem is that
the R and the W were swapped in the macros originally; it was meant to be named
RDWR because it generated mips_rd_* and mips_wr_* functions, but was instead
spelled RDRW, which nobody should be expected to get right by anything other
than copy and paste.
It's too many consonants in a row to keep straight anyway, so just prefer e.g.:
MIPS_RW32_COP0
While here, add a missing #undef.
running an o32 kernel safely, and would have to add interrupt disabling and
reenabling to a bunch of macros in the Simple Executive sources to support it.
The only reason one would run an o32 kernel on Octeon would be to run o32 world,
which is better worked towards by adding o32 binary compatibility to n64 kernels
along with, eventually, supporting multilib systems so o32 binaries can run
alongside n32 and n64 ones.
Discussed with: imp
o) Make the octeon_wdog driver work on multi-CPU systems and to also print more
information on NMI that may aid debugging. Simplify and clean up internal
API and structure.
o) There's no good reason to make the low bits of the ebase the core
number. While per-CPU exception bases would be nice, for now we just
need to make ebase the same on all cores.
not just that it is greater than the minimal kernel virtual address, but also
that it is less than the maximal kernel virtual address. On n64 kernels, the
pcpup comes out of a direct-mapped address that, with an unsigned compare, is
rather greater than the minimal kernel virtual address.
o) Turn the panic if interrupts are disabled in cpu_idle into a KASSERT since on
other architectures it's behind INVARIANTS anyway.
o) Add a check that not all interrupts are masked, too.
o) Add cpu_idleclock() and cpu_activeclock() use to cpu_idle as is done on other
architectures.
2MB of memory in the bootmem allocator for the SDK to use internally at a later
point. It'd be nice if there were some functions we could call before
allocating memory to let various facilities reserve some memory, but for now
this seems sufficient. Previously some unfortunate systems could give up all
(or at least most) of their memory to the kernel from bootmem, and then
allocating command queues for packet output and the like would fail later in
the boot process (which in turn would lead to crashes even later.)
Reported by: kan
- Remove the -shared flag for the trampoline binary, generate an
ELF executable instead of a shared object.
- No need to generate tmphack.S, move the code to sys/mips/mips/inckern.S
- No need generate opt_kernname.h, KERNNAME can be passed with -D
Reviewed by: gonzo, imp
- ds1374u : use multi-byte write.
- at24co2n, max6657: remove mutex, iicbus has the necessary locking.
Submitted by: Sreekanth M. S. (kanthms at netlogicmicro com)
1) 32-bit assignment are expected to always be atomic.
2) Release/acquire memory barrier semantics doesn't seem to be needed here.
So a simple assignment can be used.
Remove unused port_set_counter() while here, it also used to mis-use
atomic_set_int().
Reported by: jhb
Pointyhat to: avg
MFC after: 3 weeks
- Major update to xlr_i2c.c: do multi-byte ops correctly, remove unnecessary
code, add mutex to protect bus operations, style(9) fixes.
- Drivers for I2C devices on XLR/XLS engineering boards, ds1374u RTC, max6657
temparature sensor and at24co2n EEPROM.
Submitted by: Sreekanth M. S. (kanthms at netlogicmicro com)
- remove unused code in mips/rmi/xlr_pci.c
- remove unused variable in mips/rmi/dev/nlge/if_nlge.c
- fix reference to old function in mips/mips/pmap.c
Reported by: Prabhath Raman (prabhath at netlogicmicro com)
Implement uma_small_alloc() and uma_small_free() for mips that allocates
pages from direct mapped memory. Uses the same mechanism as the page table
page allocator, so that we allocate from KSEG0 in 32 bit, and from XKPHYS
on 64 bit.
Reviewed by: alc, jmallett
Passing a count of zero on i386 and amd64 for [I386|AMD64]_BUS_SPACE_MEM
causes a crash/hang since the 'loop' instruction decrements the counter
before checking if it's zero.
PR: kern/80980
Discussed with: jhb
link state polling or media-specific ones, while avoidiing changing link state
on interfaces that use miibus; this substantially speeds up link time on
interface (re)initialization.
list on exit from the transmit path. The scatter-gather list itself can be
asynchronously DMAed to the transmit hardware, and we could actually lock up
the transmitter if any of a number of races around this were lost.
Instead, let the PKO free the scatter-gather list when it is done with it, and
use the "i" bit in each segment of the packet to avoid having them go into the
FPA.
This fixes an unrecoverable transmit stall under transmit load.
MFC after: 3 days
facilities as well as support for the Octeon 2 family of SoCs.
XXX Note that with our antediluvian assembler, we can't support some Octeon 2
instructions and fall back to using the old ones instead.
o) Remove some options that are configurable on Linux but not FreeBSD.
o) Centralize open/poll/stop routines for XAUI and SGMII and use the common
uninit routine directly rather than providing a wrapper for it. The init
functions for these interfaces are now identical and the common init routine
could merge in setting those function pointers except that some hardware
seems to use no open/poll/stop method?
The current implementation of vm_page_alloc_freelist() does not handle
order > 0 correctly. Remove order parameter to the function and use it
only for order 0 pages.
Submitted by: alc
DPCPU_DEFINE and VNET_DEFINE macros, as these cause problems for various
people working on the affected files. A better long-term solution is
still being considered. This reversal may give some modules empty
set_pcpu or set_vnet sections, but these are harmless.
Changes reverted:
------------------------------------------------------------------------
r215318 | dim | 2010-11-14 21:40:55 +0100 (Sun, 14 Nov 2010) | 4 lines
Instead of unconditionally emitting .globl's for the __start_set_xxx and
__stop_set_xxx symbols, only emit them when the set_vnet or set_pcpu
sections are actually defined.
------------------------------------------------------------------------
r215317 | dim | 2010-11-14 21:38:11 +0100 (Sun, 14 Nov 2010) | 3 lines
Apply the STATIC_VNET_DEFINE and STATIC_DPCPU_DEFINE macros throughout
the tree.
------------------------------------------------------------------------
r215316 | dim | 2010-11-14 21:23:02 +0100 (Sun, 14 Nov 2010) | 2 lines
Add macros to define static instances of VNET_DEFINE and DPCPU_DEFINE.
mipsel' or 'machine mips mipseb' into the config file (with a few 64's
tossed in for good measure). This will let us build the proper
kernels with different worlds as part of make universe.
