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9f9c0382cd
linux/arch/tile/include/asm
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Chris Metcalf 9f9c0382cd arch/tile: Add driver to enable access to the user dynamic network. 
This network (the "UDN") connects all the cpus on the chip in a
wormhole-routed dynamic network.  Subrectangles of the chip can
be allocated by a "create" ioctl on /dev/hardwall, and then to access the
UDN in that rectangle, tasks must perform an "activate" ioctl on that
same file object after affinitizing themselves to a single cpu in
the region.  Sending a wormhole-routed message that tries to leave
that subrectangle causes all activated tasks to receive a SIGILL
(just as they would if they tried to access the UDN without first
activating themselves to a hardwall rectangle).

The original submission of this code to LKML had the driver
instantiated under /proc/tile/hardwall.  Now we just use a character
device for this, conventionally /dev/hardwall.  Some futures planning
for the TILE-Gx chip suggests that we may want to have other types of
devices that share the general model of "bind a task to a cpu, then
'activate' a file descriptor on a pseudo-device that gives access to
some hardware resource".  As such, we are using a device rather
than, for example, a syscall, to set up and activate this code.

As part of this change, the compat_ptr() declaration was fixed and used
to pass the compat_ioctl argument to the normal ioctl.  So far we limit
compat code to 2GB, so the difference between zero-extend and sign-extend
(the latter being correct, eventually) had been overlooked.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2010-07-06 13:34:15 -04:00
..
asm-offsets.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
atomic_32.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
atomic.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
auxvec.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
backtrace.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
bitops_32.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
bitops.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
bitsperlong.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
bug.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
bugs.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
byteorder.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
cache.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
cacheflush.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
checksum.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
compat.h arch/tile: Add driver to enable access to the user dynamic network. 2010-07-06 13:34:15 -04:00
cputime.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
current.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
delay.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
device.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
div64.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
dma-mapping.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
dma.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
elf.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
emergency-restart.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
errno.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
fcntl.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
fixmap.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
ftrace.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
futex.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
hardirq.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
hardwall.h arch/tile: Add driver to enable access to the user dynamic network. 2010-07-06 13:34:15 -04:00
highmem.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
homecache.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
hugetlb.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
hv_driver.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
hw_irq.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
ide.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
io.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
ioctl.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
ioctls.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
ipc.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
ipcbuf.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
irq_regs.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
irq.h arch/tile: Enable more sophisticated IRQ model for 32-bit chips. 2010-07-06 13:34:01 -04:00
irqflags.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
Kbuild arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
kdebug.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
kexec.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
kmap_types.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
linkage.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
local.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
memprof.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
mman.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
mmu_context.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
mmu.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
mmzone.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
module.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
msgbuf.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
mutex.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
opcode_constants_32.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
opcode_constants_64.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
opcode_constants.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
opcode-tile_32.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
opcode-tile_64.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
opcode-tile.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
page.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
param.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
pci-bridge.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
pci.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
percpu.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
pgalloc.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
pgtable_32.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
pgtable.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
poll.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
posix_types.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
processor.h arch/tile: Add driver to enable access to the user dynamic network. 2010-07-06 13:34:15 -04:00
ptrace.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
resource.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
scatterlist.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
sections.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
sembuf.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
setup.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
shmbuf.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
shmparam.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
sigcontext.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
sigframe.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
siginfo.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
signal.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
smp.h arch/tile: Enable more sophisticated IRQ model for 32-bit chips. 2010-07-06 13:34:01 -04:00
socket.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
sockios.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
spinlock_32.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
spinlock_types.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
spinlock.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
stack.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
stat.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
statfs.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
string.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
swab.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
syscall.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
syscalls.h Revert adding some arch-specific signal syscalls to <linux/syscalls.h>. 2010-06-07 09:29:59 -04:00
system.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
termbits.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
termios.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
thread_info.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
timex.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
tlb.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
tlbflush.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
topology.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
traps.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
types.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
uaccess.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
ucontext.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
unaligned.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
unistd.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
user.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00
xor.h arch/tile: core support for Tilera 32-bit chips. 2010-06-04 17:11:18 -04:00