- 14 5月, 2009 4 次提交
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由 Ralf Baechle 提交于
Commit 35133692 (kernel.org) rsp. b3594a089f1c17ff919f8f78505c3f20e1f6f8ce (linux-mips.org): > From: Chris Dearman <chris@mips.com> > Date: Wed, 19 Sep 2007 00:58:24 +0100 > Subject: [PATCH] [MIPS] Allow setting of the cache attribute at run time. > > Slightly tacky, but there is a precedent in the sparc archirecture code. introduces the variable _page_cachable_default, which defaults to zero and. is used to create the prototype PTE for __kmap_atomic in arch/mips/mm/init.c:kmap_init before initialization in arch/mips/mm/c-r4k.c:coherency_setup, so the default value of 0 will be used as the CCA of kmap atomic pages which on many processors is not a defined CCA value and may result in writes to kmap_atomic pages getting corrupted. Debugged by Jon Fraser (jfraser@broadcom.com). Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Atsushi Nemoto 提交于
Synchronize dma_map_page/dma_unmap_page and dma_map_single/dma_unmap_single. This will reduce unnecessary writebacks and invalidates. [Ralf: make dma_unmap_page an inline function.] Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Ralf Baechle 提交于
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Dmitri Vorobiev 提交于
The file arch/mips/mm/sc-rm7k.c needlessly defines two global symbols: rm7k_sc_ops rm7k_tcache_enabled This patch makes these symbols static. Signed-off-by: NDmitri Vorobiev <dmitri.vorobiev@movial.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 01 4月, 2009 1 次提交
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由 Akinobu Mita 提交于
Use debug_kmap_atomic in kmap_atomic, kmap_atomic_pfn, and iomap_atomic_prot_pfn. Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 30 3月, 2009 3 次提交
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由 Manuel Lauss 提交于
The Alchemy manuals state: "All pipeline hazards and dependencies are enforced by hardware interlocks so that any sequence of instructions is guaranteed to execute correctly. Therefore, it is not necessary to pad legacy MIPS hazards (such as load delay slots and coprocessor accesses) with NOPs." Run-tested on Au12x0, without any ill effects. Signed-off-by: NManuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Manuel Lauss 提交于
This patch removes the various CPU_AU1??? model constants in favor of a single CPU_ALCHEMY one. All currently existing Alchemy models are identical in terms of cpu core and cache size/organization. The parts of the mips kernel which need to know the exact CPU revision extract it from the c0_prid register already; and finally nothing else in-tree depends on those any more. Should a new variant with slightly different "company options" and/or "processor revision" bits in c0_prid appear, it will be supported immediately (minus an exact model string in cpuinfo). Signed-off-by: NManuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Ralf Baechle 提交于
Based on original patch by Stoyan Gaydarov <stoyboyker@gmail.com> which missed a few places. Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 24 3月, 2009 2 次提交
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由 Shinya Kuribayashi 提交于
Signed-off-by: NShinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Jan Nikitenko 提交于
dma_cache_wback_inv() expects virtual address, but physical was provided due to translation via plat_dma_addr_to_phys(). If replaced with dma_addr_to_virt(), page fault oops from dma_unmap_page() is gone on au1550 platform. Signed-off-by: NJan Nikitenko <jan.nikitenko@gmail.com> Acked-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 12 3月, 2009 1 次提交
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由 Shinya Kuribayashi 提交于
Current VR5500 processor support lacks of some functions which are expected to be configured/synthesized on arch initialization. Here're some VR5500A spec notes: * All execution hazards are handled in hardware. * Once VR5500A stops the operation of the pipeline by WAIT instruction, it could return from the standby mode only when either a reset, NMI request, or all enabled interrupts is/are detected. In other words, if interrupts are disabled by Status.IE=0, it keeps in standby mode even when interrupts are internally asserted. Notes on WAIT: The operation of the processor is undefined if WAIT insn is in the branch delay slot. The operation is also undefined if WAIT insn is executed when Status.EXL and Status.ERL are set to 1. * VR5500A core only implements the Load prefetch. With these changes, it boots fine. Signed-off-by: NShinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 28 2月, 2009 1 次提交
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由 Ralf Baechle 提交于
Thanks to David Daney helping with debugging and testing. Signed-off-by: NRalf Baechle <ralf@linux-mips.org> Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com>
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- 31 1月, 2009 2 次提交
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由 Ralf Baechle 提交于
Original commit 1c0fe6e3. Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Ralf Baechle 提交于
See discussion e9c3a7c20901051031y528d0d31r18d44c5096c59e0@mail.gmail.com. Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 11 1月, 2009 6 次提交
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由 Ralf Baechle 提交于
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 David Daney 提交于
We add a dev parameter to plat_unmap_dma_mem(), and hooks for plat_dma_supported() and plat_extra_sync_for_device() which should be nop changes for all existing targets. Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 David Daney 提交于
Expand the case statement for build_tlb_write_entry so that it does the right thing on Cavium CPU variants. Signed-off-by: NTomaso Paoletti <tpaoletti@caviumnetworks.com> Signed-off-by: NPaul Gortmaker <Paul.Gortmaker@windriver.com> Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 David Daney 提交于
Take all the OCTEON specific files that were added, and hook them into the build system for the arch/mips. For versions of GCC that lack OCTEON support, override gas target architecture. Signed-off-by: NTomaso Paoletti <tpaoletti@caviumnetworks.com> Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 David Daney 提交于
Follow precedent of other boards, and hook-up the CPU specific cache init. Signed-off-by: NTomaso Paoletti <tpaoletti@caviumnetworks.com> Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 David Daney 提交于
These are the rest of the new files needed to add OCTEON processor support to the Linux kernel. Other than Makefile and Kconfig which should be obvious, we have: csrc-octeon.c -- Clock source driver for OCTEON. dma-octeon.c -- Helper functions for mapping DMA memory. flash_setup.c -- Register on-board flash with the MTD subsystem. octeon-irq.c -- OCTEON interrupt controller managment. octeon-memcpy.S -- Optimized memcpy() implementation. serial.c -- Register 8250 platform driver and early console. setup.c -- Early architecture initialization. smp.c -- OCTEON SMP support. octeon_switch.S -- Scheduler context switch for OCTEON. c-octeon.c -- OCTEON cache controller support. cex-oct.S -- OCTEON cache exception handler. asm/mach-cavium-octeon/*.h -- Architecture include files. Signed-off-by: NTomaso Paoletti <tpaoletti@caviumnetworks.com> Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org> create mode 100644 arch/mips/cavium-octeon/Kconfig create mode 100644 arch/mips/cavium-octeon/Makefile create mode 100644 arch/mips/cavium-octeon/csrc-octeon.c create mode 100644 arch/mips/cavium-octeon/dma-octeon.c create mode 100644 arch/mips/cavium-octeon/flash_setup.c create mode 100644 arch/mips/cavium-octeon/octeon-irq.c create mode 100644 arch/mips/cavium-octeon/octeon-memcpy.S create mode 100644 arch/mips/cavium-octeon/serial.c create mode 100644 arch/mips/cavium-octeon/setup.c create mode 100644 arch/mips/cavium-octeon/smp.c create mode 100644 arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h create mode 100644 arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h create mode 100644 arch/mips/include/asm/mach-cavium-octeon/irq.h create mode 100644 arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h create mode 100644 arch/mips/include/asm/mach-cavium-octeon/war.h create mode 100644 arch/mips/include/asm/octeon/octeon.h create mode 100644 arch/mips/kernel/octeon_switch.S create mode 100644 arch/mips/mm/c-octeon.c create mode 100644 arch/mips/mm/cex-oct.S
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- 13 12月, 2008 1 次提交
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由 David Daney 提交于
dma_free_noncoherent() and dma_free_coherent() are missing calls to plat_unmap_dma_mem(). This patch adds them. Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 21 11月, 2008 1 次提交
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由 Dmitri Vorobiev 提交于
The indy_sc_ops variable in arch/mips/mm/sc-ip22.c is needlessly defined global, and this patch makes it static. Signed-off-by: NDmitri Vorobiev <dmitri.vorobiev@movial.fi> Signed-off-by: NRalf Baechle <ralf@linux-mips.org> ---
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- 28 10月, 2008 2 次提交
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由 Shinya Kuribayashi 提交于
We already have sufficient infrastructure to support VR5500 and VR5500A series processors. Here's a Makefile support to make it selectable by ports, and enable it for NEC EMMA2RH Markeins board. This patch also fixes a confused target help, and adds 1Gb PageMask bits supported by VR5500 and its variants. Signed-off-by: NShinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 David Daney 提交于
We were getting away with this for so long only because the only platform with a non-empty plat_unmap_dma_mem() doesn't call dma_sync_sg_for_cpu() and dma_sync_sg_for_device() from its commonly used drivers. Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 06 9月, 2008 2 次提交
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由 Atsushi Nemoto 提交于
Commmit 59e39ecd933ba49eb6efe84cbfa5597a6c9ef18a ("Fix WARNING: at kernel/smp.c:290") introduced local_flush_icache_range but lacks initialization for some TX39 case. Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Thomas Bogendoerfer 提交于
trap_init issues flush_icache_range(), which uses ipi functions to get icache flushing done on all cpus. But this is done before interrupts are enabled and caused WARN_ON messages. This changeset introduces a new local_flush_icache_range() and uses it before interrupts (and additional CPUs) are enabled to avoid this problem. Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 31 7月, 2008 1 次提交
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由 Ralf Baechle 提交于
Bug originally found and reported by Julia Lawall <julia@diku.dk>. I decieded that the whole error check was mostly useless paranoia and should be discarded. It would only ever trigger if r3k_have_wired_reg has a wrong value. Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 27 7月, 2008 2 次提交
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由 Johannes Weiner 提交于
Remove arch-specific show_mem() in favor of the generic version. This also removes the following redundant information display: - pages in swapcache, printed by show_swap_cache_info() where show_mem() calls show_free_areas(), which calls show_swap_cache_info(). And show_mem() does now actually print something on configurations with multiple nodes. Signed-off-by: NJohannes Weiner <hannes@saeurebad.de> Acked-by: NRalf Baechle <ralf@linux-mips.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 FUJITA Tomonori 提交于
Add per-device dma_mapping_ops support for CONFIG_X86_64 as POWER architecture does: This enables us to cleanly fix the Calgary IOMMU issue that some devices are not behind the IOMMU (http://lkml.org/lkml/2008/5/8/423). I think that per-device dma_mapping_ops support would be also helpful for KVM people to support PCI passthrough but Andi thinks that this makes it difficult to support the PCI passthrough (see the above thread). So I CC'ed this to KVM camp. Comments are appreciated. A pointer to dma_mapping_ops to struct dev_archdata is added. If the pointer is non NULL, DMA operations in asm/dma-mapping.h use it. If it's NULL, the system-wide dma_ops pointer is used as before. If it's useful for KVM people, I plan to implement a mechanism to register a hook called when a new pci (or dma capable) device is created (it works with hot plugging). It enables IOMMUs to set up an appropriate dma_mapping_ops per device. The major obstacle is that dma_mapping_error doesn't take a pointer to the device unlike other DMA operations. So x86 can't have dma_mapping_ops per device. Note all the POWER IOMMUs use the same dma_mapping_error function so this is not a problem for POWER but x86 IOMMUs use different dma_mapping_error functions. The first patch adds the device argument to dma_mapping_error. The patch is trivial but large since it touches lots of drivers and dma-mapping.h in all the architecture. This patch: dma_mapping_error() doesn't take a pointer to the device unlike other DMA operations. So we can't have dma_mapping_ops per device. Note that POWER already has dma_mapping_ops per device but all the POWER IOMMUs use the same dma_mapping_error function. x86 IOMMUs use device argument. [akpm@linux-foundation.org: fix sge] [akpm@linux-foundation.org: fix svc_rdma] [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix bnx2x] [akpm@linux-foundation.org: fix s2io] [akpm@linux-foundation.org: fix pasemi_mac] [akpm@linux-foundation.org: fix sdhci] [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix sparc] [akpm@linux-foundation.org: fix ibmvscsi] Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Avi Kivity <avi@qumranet.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 16 7月, 2008 1 次提交
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由 Dmitri Vorobiev 提交于
The following routines uasm_rel_highest() uasm_rel_higher() are needlessly defined global. This patch makes them static. Compile-tested using a customized config for the Malta board. Booting the same board up to the shell prompt was also successful with this patch applied. Spotted by sparse. Signed-off-by: NDmitri Vorobiev <dmitri.vorobiev@movial.fi> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 09 7月, 2008 2 次提交
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由 Thomas Bogendoerfer 提交于
The generated copy_page for R4k CPU with a 128 byte cache line size used Create Dirty Exclusive cache line operations even if only part of the cache line was filled. This change avoids generating cache operations, if only part of the cache line size is copied in one loop. It also increases the maxmimum loop size, because the generated code even fits into the available space for r4k CPUs with 128 byte cache line size. Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Shane McDonald 提交于
Resolve these mismatches by defining affected functions with the __cpuinit attribute, rather than __init. Signed-off-by: NShane McDonald <mcdonald.shane@gmail.com> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 26 6月, 2008 1 次提交
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由 Jens Axboe 提交于
It's never used and the comments refer to nonatomic and retry interchangably. So get rid of it. Acked-by: NJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 16 6月, 2008 4 次提交
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由 Ralf Baechle 提交于
Assuming the call of kmap_coherent in local_r4k_flush_cache_page doesn't need fixing this was skipped in fcae549295bcae801ac48fc1c2030ab8cc487020. Turns out it needed the same change after all. Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Atsushi Nemoto 提交于
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Ralf Baechle 提交于
Build error was caused by commit 35133692. Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Ralf Baechle 提交于
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 06 6月, 2008 2 次提交
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由 Yoichi Yuasa 提交于
Signed-off-by: NYoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Thomas Bogendoerfer 提交于
Treat R4700 like R4600 in build_tlb_probe_entry. Without this fix kernel will lock up. Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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- 12 5月, 2008 1 次提交
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由 Adrian Bunk 提交于
This patch removes the no longer used export of __kmap_atomic_to_page. Signed-off-by: NAdrian Bunk <bunk@kernel.org> Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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