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This patch adds sh7366 cpu supports. Just the most basic things like interrupt
controller, clocks and serial port are included at this point.
Signed-off-by: Magnus Damm <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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This patch converts the highlander CF device from good old machvec readb/writeb
to the new shiny trapped io.
Signed-off-by: Magnus Damm <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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This patch converts the CF device on r2d boards from machvec readb/writeb
to trapped io.
Signed-off-by: Magnus Damm <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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The idea is that we want to get rid of the in/out/readb/writeb callbacks from
the machvec and replace that with simple inline read and write operations to
memory. Fast and simple for most hardware devices (think pci).
Some devices require special treatment though - like 16-bit only CF devices -
so we need to have some method to hook in callbacks.
This patch makes it possible to add a per-device trap generating filter. This
way we can get maximum performance of sane hardware - which doesn't need this
filter - and crappy hardware works but gets punished by a performance hit.
V2 changes things around a bit and replaces io access callbacks with a
simple minimum_bus_width value. In the future we can add stride as well.
Signed-off-by: Magnus Damm <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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This patch changes copy_from_user() and copy_to_user() from macros
into static inline functions. This way we can use them as function
pointers. Also unify the 64 bit and 32 bit versions.
Signed-off-by: Magnus Damm <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Paul Mundt <[email protected]>
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These ports are holding up progress and now have been for months. Do the
job for them.
Signed-off-by: Alan Cox <[email protected]>
Cc: Paul Mundt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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Background: I've implemented 1K/2K page tables for s390. These sub-page
page tables are required to properly support the s390 virtualization
instruction with KVM. The SIE instruction requires that the page tables
have 256 page table entries (pte) followed by 256 page status table entries
(pgste). The pgstes are only required if the process is using the SIE
instruction. The pgstes are updated by the hardware and by the hypervisor
for a number of reasons, one of them is dirty and reference bit tracking.
To avoid wasting memory the standard pte table allocation should return
1K/2K (31/64 bit) and 2K/4K if the process is using SIE.
Problem: Page size on s390 is 4K, page table size is 1K or 2K. That means
the s390 version for pte_alloc_one cannot return a pointer to a struct
page. Trouble is that with the CONFIG_HIGHPTE feature on x86 pte_alloc_one
cannot return a pointer to a pte either, since that would require more than
32 bit for the return value of pte_alloc_one (and the pte * would not be
accessible since its not kmapped).
Solution: The only solution I found to this dilemma is a new typedef: a
pgtable_t. For s390 pgtable_t will be a (pte *) - to be introduced with a
later patch. For everybody else it will be a (struct page *). The
additional problem with the initialization of the ptl lock and the
NR_PAGETABLE accounting is solved with a constructor pgtable_page_ctor and
a destructor pgtable_page_dtor. The page table allocation and free
functions need to call these two whenever a page table page is allocated or
freed. pmd_populate will get a pgtable_t instead of a struct page pointer.
To get the pgtable_t back from a pmd entry that has been installed with
pmd_populate a new function pmd_pgtable is added. It replaces the pmd_page
call in free_pte_range and apply_to_pte_range.
Signed-off-by: Martin Schwidefsky <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Move STACK_TOP[_MAX] out of asm/a.out.h and into asm/processor.h as they're
required whether or not A.OUT format is available.
Signed-off-by: David Howells <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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struct user.u_ar0 is defined to contain a pointer offset on all
architectures in which it is defined (all architectures which define an
a.out format except SPARC.) However, it has a pointer type in the headers,
which is pointless -- <asm/user.h> is not exported to userspace, and it
just makes the code messy.
Redefine the field as "unsigned long" (which is the same size as a pointer
on all Linux architectures) and change the setting code to user offsetof()
instead of hand-coded arithmetic.
Cc: Linux Arch Mailing List <[email protected]>
Cc: Bryan Wu <[email protected]>
Cc: Roman Zippel <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Richard Henderson <[email protected]>
Cc: Ivan Kokshaysky <[email protected]>
Cc: Russell King <[email protected]>
Cc: Lennert Buytenhek <[email protected]>
Cc: Håvard Skinnemoen <[email protected]>
Cc: Mikael Starvik <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Hirokazu Takata <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Martin Schwidefsky <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Paul Mundt <[email protected]>
Signed-off-by: H. Peter Anvin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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asm/elf.h, asm/page.h and asm/user.h don't export to userspace now, so we can
drop #ifdef __KERNEL__ for them.
[[email protected]: remove #ifdef __KERNEL_]
Signed-off-by: Kirill A. Shutemov <[email protected]>
Reviewed-by: David Woodhouse <[email protected]>
Cc: <[email protected]>
Signed-off-by: Kirill A. Shutemov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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The declaration and implementation of __const_udelay use different
names for the parameter on a number of architectures:
include/asm-avr32/delay.h:15:extern void __const_udelay(unsigned long usecs);
arch/avr32/lib/delay.c:39:inline void __const_udelay(unsigned long xloops)
include/asm-sh/delay.h:15:extern void __const_udelay(unsigned long usecs);
arch/sh/lib/delay.c:22:inline void __const_udelay(unsigned long xloops)
include/asm-m32r/delay.h:15:extern void __const_udelay(unsigned long usecs);
arch/m32r/lib/delay.c:58:void __const_udelay(unsigned long xloops)
include/asm-x86/delay.h:16:extern void __const_udelay(unsigned long usecs);
arch/x86/lib/delay_32.c:82:inline void __const_udelay(unsigned long xloops)
arch/x86/lib/delay_64.c:46:inline void __const_udelay(unsigned long xloops)
The units of the parameter isn't usecs, so that name is definitely
wrong. It's also not exactly loops, so I suppose xloops is an OK
name.
This patch changes these names from usecs to xloops.
Signed-off-by: Jeff Dike <[email protected]>
Cc: Haavard Skinnemoen <[email protected]>
Cc: Paul Mundt <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Hirokazu Takata <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Cc: David Howells <[email protected]>
Cc: Hirokazu Takata <[email protected]>
Cc: Paul Mundt <[email protected]>
Cc: Kazumoto Kojima <[email protected]>
Cc: Richard Curnow <[email protected]>
Cc: Davide Libenzi <[email protected]>
Cc: Michael Kerrisk <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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(with Martin Schwidefsky <[email protected]>)
The pgd/pud/pmd/pte page table allocation functions get a mm_struct pointer as
first argument. The free functions do not get the mm_struct argument. This
is 1) asymmetrical and 2) to do mm related page table allocations the mm
argument is needed on the free function as well.
[[email protected]: i386 fix]
[[email protected]: coding-syle fixes]
Signed-off-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
Cc: <[email protected]>
Signed-off-by: Kamalesh Babulal <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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A userspace program may wish to set the mark for each packets its send
without using the netfilter MARK target. Changing the mark can be used
for mark based routing without netfilter or for packet filtering.
It requires CAP_NET_ADMIN capability.
Signed-off-by: Laszlo Attila Toth <[email protected]>
Acked-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Remove the deprecated __attribute_used__.
[Introduce __section in a few places to silence checkpatch /sam]
Signed-off-by: Adrian Bunk <[email protected]>
Signed-off-by: Sam Ravnborg <[email protected]>
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This patch adds the header file asm/spi.h and board specific code for the
r2d board. The header file contains a structure that should be used to
point out a single spi bus. The board specific code for r2d is updated with
such a structure for the new spi_sh_sci driver. The structure contains a
chip select callback plus information about the R9701 rtc chip which is
attached to the spi bus.
Signed-off-by: Magnus Damm <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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This patch updates the board specific irq code for r7780rp. The new code is
very similar to the other highlander implementations, with the exception that
the r7780rp handles pci interrupts using IRL. To simplify the pci code and
use the same interrupt numbers as r7780mp and r7785rp we hook in to the
cpu specific pci vectors.
The pci interrupts and the push switch all work well with and without this
patch. CF and AX88796 are not ok though and the source of the problem is
unknown at this point. The AX88796 does for not detect it's proper mac
address (IPL gets it right) and the kernel hangs on CF access. As a workaround
this patch removes the CF and the AX88796 from the platform datain case of
r7780rp.
Signed-off-by: Magnus Damm <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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Now with the voyagergx cruft gone and the dreamcast using declared
coherent memory for pci there are no users of the consistent alloc and
free functions pointers in the machine vector.
So this little patch simply removes these function pointers from the macvec.
Signed-off-by: Magnus Damm <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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This patch adds declared coherent memory support to the sh architecture. All
functions are based on the x86 implementation. Header files are adjusted to
use the new functions instead of the former consistent_alloc() code.
This version includes the few changes what were included in the fix patch
together with modifications based on feedback from Paul.
Signed-off-by: Magnus Damm <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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Add support for Renesas Technology Europe SDK7780 board.
Signed-off-by: Nicholas Beck <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Paul Mundt <[email protected]>
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This patch removes redundant irq handling code together with unused
consistent alloc code. R2D uart setup code is changed to use
sm501-regs.h and unused header files are removed.
Signed-off-by: Magnus Damm <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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This patch removes interrupt priority tables from the intc code.
Optimal priority assignment varies with embedded application anyway,
so keeping the interrupt priority tables together with cpu-specific
code doesn't make sense.
The function intc_set_priority() should be used instead to set the
desired interrupt priority level.
Signed-off-by: Magnus Damm <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Paul Mundt <[email protected]>
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This patch provides specific clock support for the SH7712.
Signed-off-by: Andrew Murray <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Yoshihiro Shimoda <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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Fixes the build error caused by -Werror on gcc 3.x compilers:
arch/sh/kernel/signal_32.c: In function `sys_sigaction':
arch/sh/kernel/signal_32.c:66: warning: initialization discards qualifiers from pointer target type
arch/sh/kernel/signal_32.c:67: warning: initialization discards qualifiers from pointer target type
arch/sh/kernel/signal_32.c:69: warning: initialization discards qualifiers from pointer target type
arch/sh/kernel/signal_32.c:70: warning: initialization discards qualifiers from pointer target type
The mismatch in question was introduced by commit-id
9c5a4eec79b3eb8876d2e7fddfa1e040a7650e55.
Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Yoshihiro Shimoda <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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Currently the wdt forces HZ=1000 and sidesteps CONFIG_HZ completely. This
is a remnant from when HZ was hardcoded and before CONFIG_HZ was
introduced. Additionally, not all of the timers have this requirement
these days, so it's also an artificial limitation. Just kill it off and
use CONFIG_HZ directly.
Reported-by: H. Peter Anvin <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Joe Perches <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Paul Mundt <[email protected]>
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Fixes up the mmc build.
Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Paul Mundt <[email protected]>
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This adds in the L1I/L1D/L2 cache shape support to their respective
entries in the ELF auxvt, based on the Alpha implementation. We use
this on the userspace libc side for calculating a tightly packed
SHMLBA amongst other things.
Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Stuart Menefy <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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When a get_user(to, from++) is called the pointer increment is performed
after its first usage, in the specific after the __add_ok invokation.
This causes a wrong get_user return value, putting a wrong character
in the destination variable. This patch solves the problem using a new
temporary pointer.
Additionally this reworks the use of the register banks, allowing for
consolidation between the MMU and nommu implementations.
Signed-off-by: Carmelo Amoroso <[email protected]>
Signed-off-by: Giuseppe Condorelli <[email protected]>
Signed-off-by: Stuart Menefy <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Stuart Menefy <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Stuart Menefy <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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Presently most of the 29-bit physical parts do P1/P2 segmentation
with a 1:1 cached/uncached mapping, jumping between the two to
control the caching behaviour. This provides the basic infrastructure
to maintain this behaviour on 32-bit physical parts that don't map
P1/P2 at all, using a shiny new linker section and corresponding
fixmap entry.
Signed-off-by: Stuart Menefy <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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This implements kernel-level atomic rollback built on top of gUSA,
as an alternative non-IRQ based atomicity method. This is generally
a faster method for platforms that are lacking the LL/SC pairs that
SH-4A and later use, and is only supportable on legacy cores.
Signed-off-by: Stuart Menefy <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Paul Mundt <[email protected]>
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With all of the different CPU types this was getting a but unwieldly.
Since sh64 is now integrated, we don't have to worry about multiple
architectures caring about the header definitions.
Split out the defs for each asm/cpu/ to make rtc-sh slightly less
visually offensive.
Signed-off-by: Paul Mundt <[email protected]>
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Avoid namespace collision with a CCR1 definition. The general
SH code always expects CCR anyways, so there's no point in keeping
the CCR1 naming around.
Fixes up synclink collisions:
drivers/char/pcmcia/synclink_cs.c:283:1: warning: "CCR1" redefined
In file included from include/asm/cache.h:13,
from include/asm/processor_32.h:15,
from include/asm/processor.h:60,
from include/linux/prefetch.h:14,
from include/linux/list.h:8,
from include/linux/module.h:9,
from drivers/char/pcmcia/synclink_cs.c:38:
include/asm/cpu/cache.h:21:1: warning: this is the location of the previous definition
Reported-by: Andrew Morton <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
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Signed-off-by: Paul Mundt <[email protected]>
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