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path: root/arch/x86/include/asm/io.h
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2009-03-04x86: remove vestigial fix_ioremap prototypesJeremy Fitzhardinge
The function seems to have disappeared at some point, leaving some vestigial prototypes behind... Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-17x86: truncate ISA addresses to unsigned intH. Peter Anvin
Impact: Cleanup; fix inappropriate macro use ISA addresses on x86 are mapped 1:1 with the physical address space. Since the ISA address space is only 24 bits (32 for VLB or LPC) it will always fit in an unsigned int, and at least in the aha1542 driver using a wider type would cause an undesirable promotion. Hence explicitly cast the ISA bus addresses to unsigned int. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
2009-02-13x86: fix "__udivdi3" [drivers/scsi/aha1542.ko] undefinedJames Bottomley
Commit 976e8f677e42757e5586ea04a9ac8bb8ddaa037e ("x86: asm/io.h: unify virt_to_phys/phys_to_virt") changed the return of virt_to_phys from long to phys_addr_t which is unsigned long long on a PAE platform. So, I could suggest a fix below since isa addresses may never be above 32 bits. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-13Merge branches 'x86/acpi', 'x86/asm', 'x86/cpudetect', 'x86/crashdump', ↵Ingo Molnar
'x86/debug', 'x86/defconfig', 'x86/doc', 'x86/header-fixes', 'x86/headers' and 'x86/minor-fixes' into x86/core
2009-02-13Merge branch 'x86/cleanups' into x86/coreIngo Molnar
2009-02-11Merge commit 'v2.6.29-rc4' into x86/cleanupsIngo Molnar
2009-02-06x86: asm/io.h: unify ioremap prototypesJeremy Fitzhardinge
Impact: unify identical code asm/io_32.h and _64.h have identical prototypes for the ioremap family of functions. The 32-bit header had a more descriptive comment. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-06x86: asm/io.h: unify virt_to_phys/phys_to_virtJeremy Fitzhardinge
Impact: unify identical code asm/io_32.h and _64.h has functionally identical definitions for virt_to_phys, phys_to_virt, page_to_phys, and the isa_* variants, so just unify them. The only slightly functional change is using phys_addr_t for the physical address argument and return val. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-01-28x86: unify asm/io.h: IO_SPACE_LIMITJeremy Fitzhardinge
Impact: Cleanup (trivial unification) Move common define IO_SPACE_LIMIT from <asm/io_*.h> to <asm/io.h>. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-01-28Merge branches 'x86/asm', 'x86/cleanups', 'x86/cpudetect', 'x86/debug', ↵Ingo Molnar
'x86/doc', 'x86/header-fixes', 'x86/mm', 'x86/paravirt', 'x86/pat', 'x86/setup-v2', 'x86/subarch', 'x86/uaccess' and 'x86/urgent' into x86/core
2009-01-22x86 PAT: ioremap_wc should take resource_size_t parametervenkatesh.pallipadi@intel.com
Impact: fix/extend ioremap_wc() beyond 4GB aperture on 32-bit ioremap_wc() was taking in unsigned long parameter, where as it should take 64-bit resource_size_t parameter like other ioremap variants. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-16x86: fix assumed to be contiguous leaf page tables for kmap_atomic region ↵Jan Beulich
(take 2) Debugging and original patch from Nick Piggin <npiggin@suse.de> The early fixmap pmd entry inserted at the very top of the KVA is causing the subsequent fixmap mapping code to not provide physically linear pte pages over the kmap atomic portion of the fixmap (which relies on said property to calculate pte addresses). This has caused weird boot failures in kmap_atomic much later in the boot process (initial userspace faults) on a 32-bit PAE system with a larger number of CPUs (smaller CPU counts tend not to run over into the next page so don't show up the problem). Solve this by attempting to clear out the page table, and copy any of its entries to the new one. Also, add a bug if a nonlinear condition is encountered and can't be resolved, which might save some hours of debugging if this fragile scheme ever breaks again... Once we have such logic, we can also use it to eliminate the early ioremap trickery around the page table setup for the fixmap area. This also fixes potential issues with FIX_* entries sharing the leaf page table with the early ioremap ones getting discarded by early_ioremap_clear() and not restored by early_ioremap_reset(). It at once eliminates the temporary (and configuration, namely NR_CPUS, dependent) unavailability of early fixed mappings during the time the fixmap area page tables get constructed. Finally, also replace the hard coded calculation of the initial table space needed for the fixmap area with a proper one, allowing kernels configured for large CPU counts to actually boot. Based-on: Nick Piggin <npiggin@suse.de> Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-03x86: remove dead BIO_VMERGE_BOUNDARY definitionFUJITA Tomonori
Impact: cleanup, remove dead code The block layer dropped the virtual merge feature (b8b3e16cfe6435d961f6aaebcfd52a1ff2a988c5). BIO_VMERGE_BOUNDARY definition is meaningless now. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-30x86: provide readq()/writeq() on 32-bit too, completeIngo Molnar
if HAVE_READQ/HAVE_WRITEQ are defined, the full range of readq/writeq APIs has to be provided to drivers: drivers/infiniband/hw/amso1100/c2.c: In function 'c2_tx_ring_alloc': drivers/infiniband/hw/amso1100/c2.c:133: error: implicit declaration of function '__raw_writeq' So provide them on 32-bit as well. Also, map all the APIs to the strongest ordering variant. It's way too easy to mess such details up in drivers and the difference between "memory" and "" constrained asm() constructs is in the noise range. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-30x86: provide readq()/writeq() on 32-bit too, cleanupIngo Molnar
Impact: cleanup Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-30x86: provide readq()/writeq() on 32-bit tooHitoshi Mitake
Impact: add new API for drivers Add implementation of readq/writeq to x86_32, and add config value to the x86 architecture to determine existence of readq/writeq. Signed-off-by: Hitoshi Mitake <h.mitake@gmail.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-29x86: start annotating early ioremap pointers with __iomemHarvey Harrison
Impact: some new sparse warnings in e820.c etc, but no functional change. As with regular ioremap, iounmap etc, annotate with __iomem. Fixes the following sparse warnings, will produce some new ones elsewhere in arch/x86 that will get worked out over time. arch/x86/mm/ioremap.c:402:9: warning: cast removes address space of expression arch/x86/mm/ioremap.c:406:10: warning: cast adds address space to expression (<asn:2>) arch/x86/mm/ioremap.c:782:19: warning: Using plain integer as NULL pointer Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-22x86: Fix ASM_X86__ header guardsH. Peter Anvin
Change header guards named "ASM_X86__*" to "_ASM_X86_*" since: a. the double underscore is ugly and pointless. b. no leading underscore violates namespace constraints. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-10-22x86, um: ... and asm-x86 moveAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>