- 10 8月, 2009 6 次提交
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由 FUJITA Tomonori 提交于
This is a preparation for using asm-generic/pci-dma-compat.h; SPARC32 has two dma_map_ops structures for pci and sbus (removing arch/sparc/kernel/dma.c, PCI and SBUS DMA accessor). Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Tested-by: NRobert Reif <reif@earthlink.net> Acked-by: NDavid S. Miller <davem@davemloft.net> Cc: tony.luck@intel.com Cc: fenghua.yu@intel.com LKML-Reference: <1249872797-1314-7-git-send-email-fujita.tomonori@lab.ntt.co.jp> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 FUJITA Tomonori 提交于
Now sparc uses include/asm-generic/dma-mapping-common.h. pci_sun4v.c doesn't need to have no-op dma_4v_sync_single_for_cpu and dma_4v_sync_sg_for_cpu (dma-mapping-common.h does nothing if sync_{single|sg}_for_cpu hook is not defined). So we can remove them safely. Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Tested-by: NRobert Reif <reif@earthlink.net> Acked-by: NDavid S. Miller <davem@davemloft.net> Cc: tony.luck@intel.com Cc: fenghua.yu@intel.com LKML-Reference: <1249872797-1314-6-git-send-email-fujita.tomonori@lab.ntt.co.jp> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 FUJITA Tomonori 提交于
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Tested-by: NRobert Reif <reif@earthlink.net> Acked-by: NDavid S. Miller <davem@davemloft.net> Cc: tony.luck@intel.com Cc: fenghua.yu@intel.com LKML-Reference: <1249872797-1314-5-git-send-email-fujita.tomonori@lab.ntt.co.jp> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 FUJITA Tomonori 提交于
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Tested-by: NRobert Reif <reif@earthlink.net> Acked-by: NDavid S. Miller <davem@davemloft.net> Cc: tony.luck@intel.com Cc: fenghua.yu@intel.com LKML-Reference: <1249872797-1314-4-git-send-email-fujita.tomonori@lab.ntt.co.jp> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 FUJITA Tomonori 提交于
flush_write_buffers() in dma-mapping-common.h was removed so we can remove NULL flush_write_buffers() in IA64. Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: tony.luck@intel.com Cc: fenghua.yu@intel.com Cc: davem@davemloft.net LKML-Reference: <1249872797-1314-3-git-send-email-fujita.tomonori@lab.ntt.co.jp> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Arnd Bergmann 提交于
This moves flush_write_buffers() in asm-generic/dma-mapping-common.h to arch/x86/kernel/pci-nommu.c. The purpose of this patch is that, we can avoid defining NULL flush_write_buffers() on IA64 and SPARC. dma-mapping-common.h is used by X86 and IA64 (and SPARC soon) but only X86 with CONFIG_X86_OOSTORE or CONFIG_X86_PPRO_FENCE actually uses flush_write_buffers(). CONFIG_X86_OOSTORE or CONFIG_X86_PPRO_FENCE is usable with only kernel/pci-nommu.c (that is, not usable with other X86 IOMMU implementations such as SWIOTLB, VT-d, etc) so we can safely move flush_write_buffers() in asm-generic/dma-mapping-common.h to arch/x86/kernel/pci-nommu.c. The further discussion is: http://lkml.org/lkml/2009/6/28/104Signed-off-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: davem@davemloft.net Cc: tony.luck@intel.com Cc: fenghua.yu@intel.com LKML-Reference: <1249872797-1314-2-git-send-email-fujita.tomonori@lab.ntt.co.jp> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 28 7月, 2009 14 次提交
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由 FUJITA Tomonori 提交于
phys_to_dma() and dma_to_phys() are used instead of swiotlb_phys_to_bus() and swiotlb_bus_to_phys(). Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
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由 FUJITA Tomonori 提交于
phys_to_dma() and dma_to_phys() are used instead of swiotlb_phys_to_bus() and swiotlb_bus_to_phys(). Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: NBecky Bruce <beckyb@kernel.crashing.org>
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由 FUJITA Tomonori 提交于
This adds two functions, phys_to_dma() and dma_to_phys() to x86, IA64 and powerpc. swiotlb uses them. phys_to_dma() converts a physical address to a dma address. dma_to_phys() does the opposite. Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: NBecky Bruce <beckyb@kernel.crashing.org>
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由 FUJITA Tomonori 提交于
swiotlb doesn't use swiotlb_arch_address_needs_mapping(); it uses dma_capalbe(). We can remove unnecessary swiotlb_arch_address_needs_mapping(). We can remove swiotlb_addr_needs_map() and is_buffer_dma_capable() in swiotlb_pci_addr_needs_map() too; dma_capable() handles the features that both provide. Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: NBecky Bruce <beckyb@kernel.crashing.org>
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由 FUJITA Tomonori 提交于
dma_capable() eventually replaces is_buffer_dma_capable(), which tells if a memory area is dma-capable or not. The problem of is_buffer_dma_capable() is that it doesn't take a pointer to struct device so it doesn't work for POWERPC. Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: NBecky Bruce <beckyb@kernel.crashing.org>
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由 FUJITA Tomonori 提交于
dma_capable() eventually replaces is_buffer_dma_capable(), which tells if a memory area is dma-capable or not. The problem of is_buffer_dma_capable() is that it doesn't take a pointer to struct device so it doesn't work for POWERPC. Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
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由 FUJITA Tomonori 提交于
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
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由 FUJITA Tomonori 提交于
dma_capable() eventually replaces is_buffer_dma_capable(), which tells if a memory area is dma-capable or not. The problem of is_buffer_dma_capable() is that it doesn't take a pointer to struct device so it doesn't work for POWERPC. Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
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由 FUJITA Tomonori 提交于
swiotlb_bus_to_virt is unncessary; we can use swiotlb_bus_to_phys and phys_to_virt instead. Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: NBecky Bruce <beckyb@kernel.crashing.org>
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由 FUJITA Tomonori 提交于
Nobody uses swiotlb_arch_range_needs_mapping(). Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: NBecky Bruce <beckyb@kernel.crashing.org>
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由 FUJITA Tomonori 提交于
Nobody uses swiotlb_alloc(). Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: NBecky Bruce <beckyb@kernel.crashing.org>
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由 FUJITA Tomonori 提交于
Nobody uses swiotlb_alloc_boot(). Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: NBecky Bruce <beckyb@kernel.crashing.org>
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由 Benjamin Herrenschmidt 提交于
Those definitions are already provided by asm-generic Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: NPaul Mundt <lethal@linux-sh.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Benjamin Herrenschmidt 提交于
mm: Pass virtual address to [__]p{te,ud,md}_free_tlb() Upcoming paches to support the new 64-bit "BookE" powerpc architecture will need to have the virtual address corresponding to PTE page when freeing it, due to the way the HW table walker works. Basically, the TLB can be loaded with "large" pages that cover the whole virtual space (well, sort-of, half of it actually) represented by a PTE page, and which contain an "indirect" bit indicating that this TLB entry RPN points to an array of PTEs from which the TLB can then create direct entries. Thus, in order to invalidate those when PTE pages are deleted, we need the virtual address to pass to tlbilx or tlbivax instructions. The old trick of sticking it somewhere in the PTE page struct page sucks too much, the address is almost readily available in all call sites and almost everybody implemets these as macros, so we may as well add the argument everywhere. I added it to the pmd and pud variants for consistency. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: David Howells <dhowells@redhat.com> [MN10300 & FRV] Acked-by: NNick Piggin <npiggin@suse.de> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [s390] Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 27 7月, 2009 16 次提交
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由 Sam Ravnborg 提交于
Reviewed the Makefile on request by Michal and this is the resulting changes. o Use ':=' for assignmnet so we do not re-evaluate for each use o Use $(shell echo xxx) to remove "" o Replaced CFLAGS_KERNEL with KBUILD_CFLAGS The settings are equally relevant for modules and the linked kernel o Dropped LDFLAGS_BLOB - it is no longer used o Refactored assignmnets to libs-y and core-y o Use MMU for the MMU specific extension. "MMUEXT" was hurting my eyes and I did not wanted it spread to m68k Signed-off-by: NSam Ravnborg <sam@ravnborg.org> Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
For example reiserfs use this relocation type. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 John Williams 提交于
New reloc type R_MICROBLAZE_32_PCREL_LO requires a null handler (no work to do). Remove legacy hack for broken linker pre gcc-4.1.1, that required us to extract an offset from the code, add it to the addend, then rewrite the instruction. Fixup the invalid reloc type error output. Boot tested with the xilinx_emaclite ethernet driver. Signed-off-by: NJohn Williams <john.williams@petalogix.com> Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Arnd Bergmann 提交于
The ipc system call is now unused in microblaze, as the system call table points directly to the indidual system calls for IPC. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
This patch add support for cases where load/store instruction in put/get_user macro gets unaligned pointer to data and this address is not valid. I prevent all cases which can failed. I had to disable first stage of unaligned handler which is used only for noMMU kernel and the whole work is done when interrupt is enabled. You have enable HW support for detect unaligned access in Microblaze. This patch fixed three LTP tests: getpeername01, getsockname01, socketpair01 Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
Calling fixup when we are in kernel mode. This prevent fault for copy_to/from_user. This fault was find thanks to writev01/03/04 LTP tests. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
We need to define _PAGE_FILE macro and change pte functions. Microblaze use the same MMU as PowerPC that's why we define _PAGE_FILE in the same style. This change fixed remap_file_pages01 LTP test. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
For 64bits arguments gcc caused that put_user macro works with wrong value because of optimalization. Adding volatile caused that gcc not optimized it. It is possible to use (as Blackfin do) two put_user macros with 32bits arguments but there is one more instruction which is due to duplication zero return value which is called put_user_asm macro. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
It is necessary to zeroed r7 when r7 points to bad dtb - this caused that we have correct messages about compiled-in dtb or passing via r7 Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
I can't clear r7 because if I do it I lose information where DTB come from. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
Print accurate message about place where FDT blob is. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 John Williams 提交于
If r7 is zero at kernel boot, or does not point to a valid DTB, then we fall back to a DTB (assumed to be) linked statically in the kernel, instead of blindly copying bogus cruft into the kernel DTB memory region Signed-off-by: NJohn Williams <john.williams@petalogix.com> Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Huang Weiyi 提交于
Remove duplicated #include('s) in arch/microblaze/include/asm/io.h Signed-off-by: NHuang Weiyi <weiyi.huang@gmail.com> Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
This fix remove bug which we had till now in all Microblaze MMU code. Primary tested on mmap01 LTP test. We forget to flush invalid tlb which were changed - we used them and there were wrong old data which wasn't correct. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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- 24 7月, 2009 4 次提交
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由 Martin Schwidefsky 提交于
The combination of noexec=on and a clock_gettime call with clock id CLOCK_THREAD_CPUTIME_ID is broken. The vdso code switches to the access register mode to get access to the per-cpu data structure to execute the magic ectg instruction. After the ectg instruction the code always switches back to the primary mode but for noexec=on the correct mode is the secondary mode. The effect of the bug is that the user space program looses the access to all mappings without PROT_EXEC, e.g. the stack. The problem is fixed by restoring the mode that has been active before the switch to the access register mode. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Heiko Carstens 提交于
vdso per cpu area allocation in smp_prepare_cpus() happens with GFP_KERNEL but irqs disabled. Triggers this one: Badness at kernel/lockdep.c:2280 Modules linked in: CPU: 0 Not tainted 2.6.30 #2 Process swapper (pid: 1, task: 000000003fe88000, ksp: 000000003fe87eb8) Krnl PSW : 0400c00180000000 0000000000083360 (lockdep_trace_alloc+0xec/0xf8) [...] Call Trace: ([<00000000000832b6>] lockdep_trace_alloc+0x42/0xf8) [<00000000000b1880>] __alloc_pages_internal+0x3e8/0x5c4 [<00000000000b1b4a>] __get_free_pages+0x3a/0xb0 [<0000000000026546>] vdso_alloc_per_cpu+0x6a/0x18c [<00000000005eff82>] smp_prepare_cpus+0x322/0x594 [<00000000005e8232>] kernel_init+0x76/0x398 [<000000000001bb1e>] kernel_thread_starter+0x6/0xc [<000000000001bb18>] kernel_thread_starter+0x0/0xc Fix this by moving the allocation out of the irqs disabled section. Reported-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Heiko Carstens 提交于
swsusp_arch_suspend() actually saves all cpu register contents on hibernation. Machine checks must be disabled since swsusp_arch_suspend() stores register contents to their lowcore save areas. That's the same place where register contents on machine checks would be saved. To avoid register corruption disable machine checks. We must also disable machine checks in the new psw mask for program checks, since swsusp_arch_suspend() may generate program checks. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Heiko Carstens 提交于
Our swsusp_arch_suspend() backend implementation disables prefixing by setting the contents of the prefix register to 0. However afterwards common code functions are called which might access percpu data structures. Since the lowcore contains e.g. the percpu base pointer this isn't a good idea. So fix this by copying the hibernating cpu's lowcore to absolute address zero. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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