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* [PATCH] x86_64: Add 4GB DMA32 zoneAndi Kleen2005-11-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a new 4GB GFP_DMA32 zone between the GFP_DMA and GFP_NORMAL zones. As a bit of historical background: when the x86-64 port was originally designed we had some discussion if we should use a 16MB DMA zone like i386 or a 4GB DMA zone like IA64 or both. Both was ruled out at this point because it was in early 2.4 when VM is still quite shakey and had bad troubles even dealing with one DMA zone. We settled on the 16MB DMA zone mainly because we worried about older soundcards and the floppy. But this has always caused problems since then because device drivers had trouble getting enough DMA able memory. These days the VM works much better and the wide use of NUMA has proven it can deal with many zones successfully. So this patch adds both zones. This helps drivers who need a lot of memory below 4GB because their hardware is not accessing more (graphic drivers - proprietary and free ones, video frame buffer drivers, sound drivers etc.). Previously they could only use IOMMU+16MB GFP_DMA, which was not enough memory. Another common problem is that hardware who has full memory addressing for >4GB misses it for some control structures in memory (like transmit rings or other metadata). They tended to allocate memory in the 16MB GFP_DMA or the IOMMU/swiotlb then using pci_alloc_consistent, but that can tie up a lot of precious 16MB GFPDMA/IOMMU/swiotlb memory (even on AMD systems the IOMMU tends to be quite small) especially if you have many devices. With the new zone pci_alloc_consistent can just put this stuff into memory below 4GB which works better. One argument was still if the zone should be 4GB or 2GB. The main motivation for 2GB would be an unnamed not so unpopular hardware raid controller (mostly found in older machines from a particular four letter company) who has a strange 2GB restriction in firmware. But that one works ok with swiotlb/IOMMU anyways, so it doesn't really need GFP_DMA32. I chose 4GB to be compatible with IA64 and because it seems to be the most common restriction. The new zone is so far added only for x86-64. For other architectures who don't set up this new zone nothing changes. Architectures can set a compatibility define in Kconfig CONFIG_DMA_IS_DMA32 that will define GFP_DMA32 as GFP_DMA. Otherwise it's a nop because on 32bit architectures it's normally not needed because GFP_NORMAL (=0) is DMA able enough. One problem is still that GFP_DMA means different things on different architectures. e.g. some drivers used to have #ifdef ia64 use GFP_DMA (trusting it to be 4GB) #elif __x86_64__ (use other hacks like the swiotlb because 16MB is not enough) ... . This was quite ugly and is now obsolete. These should be now converted to use GFP_DMA32 unconditionally. I haven't done this yet. Or best only use pci_alloc_consistent/dma_alloc_coherent which will use GFP_DMA32 transparently. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [libata] ATAPI pad allocation fixes/cleanupJeff Garzik2005-11-04
| | | | | | | Use ata_pad_{alloc,free} in two drivers, to factor out common code. Add ata_pad_{alloc,free} to two other drivers, which needed the padding but had not been updated.
* Merge branch 'master'Jeff Garzik2005-11-04
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| * [PATCH] nvidiafb: Geforce 7800 series support addedCalin A. Culianu2005-11-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds support for the Nvidia Geforce 7800 series of cards to the nvidiafb framebuffer driver. All it does is add the PCI device id for the 7800, 7800 GTX, 7800 GO, and 7800 GTX GO cards to the module device table for the nvidiafb.ko driver, so that nvidiafb.ko will actually work on these cards. I also added the relevant PCI device ids to linux/pci_ids.h I tested it on my 7800 GTX here and it works like a charm. I now can get framebuffer support on this card! Woo hoo!! Nothing like 200x75 text mode to make your eyes BLEED. ;) Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * Merge branch 'srp' of ↵Linus Torvalds2005-11-04
| |\ | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband
| | * IB: Add SCSI RDMA Protocol (SRP) initiatorRoland Dreier2005-11-02
| | | | | | | | | | | | | | | | | | | | | Add an InfiniBand SCSI RDMA Protocol (SRP) initiator. This driver is used to talk talk to InfiniBand SRP targets (storage devices). Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * | Merge branch 'for-linus' of ↵Linus Torvalds2005-11-04
| |\ \ | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband
| | * | [IB] ucm: 32/64 compatibility fixesSean Hefty2005-11-01
| | |/ | | | | | | | | | | | | | | | | | | | | | Fix structure layouts to ensure same size on 32-bit and 64-bit architectures. This permits 32-bit userspace apps on a 64-bit kernel. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * | Merge master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc-mergeLinus Torvalds2005-11-04
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| | * | powerpc: Merge smp.c and smp.hPaul Mackerras2005-11-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This also moves setup_cpu_maps to setup-common.c (calling it smp_setup_cpu_maps) and uses it on both 32-bit and 64-bit. Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | Merge git://oak/home/sfr/kernels/iseries/workPaul Mackerras2005-11-04
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| | | * | powerpc: merge tlbflush.hStephen Rothwell2005-11-04
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| | | * | powerpc: merge tlb.hStephen Rothwell2005-11-03
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| | * | | Merge with PaulusMichael Ellerman2005-11-03
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| | | * | Merge git://oak/home/sfr/kernels/iseries/workPaul Mackerras2005-11-03
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| | | | * | powerpc: merge ucontext.hStephen Rothwell2005-11-03
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| | | | * | powerpc: merge sigcontext.hStephen Rothwell2005-11-03
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| | | | * | powerpc: move include/asm-ppc64/ppc32.h to arch/powerpc/kernelStephen Rothwell2005-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is only included by signal_32.c Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| | | | * | powerpc: merge ptrace.hStephen Rothwell2005-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move struct ptregs32 into asm-ppc64/ppc32.h Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| | | | * | powerpc: merge stat.hStephen Rothwell2005-11-03
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| | | * | | [PATCH] powerpc: Keep fixing merged ipcbuf.hDavid Gibson2005-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Oops, replacing the two u64s in struct ipc64_perm with __u32s changed the alignment of that structure, which could mess up userspace. Revert to using two unsigned long longs (which is what ppc32 had originally). ppc64 orignally had two unsigned longs, but long long is the same size on 64 bit, so this should be ok there too. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | | * | | [PATCH] ppc32 8xx: Fix harmless warning in 8xx_io/commproc.cMarcelo Tosatti2005-11-03
| | | |/ / | | | | | | | | | | | | | | | Signed-off-by: Paul Mackerras <paulus@samba.org>
| | | * | powerpc: Merge remaining RTAS codePaul Mackerras2005-11-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This moves rtas-proc.c and rtas_flash.c into arch/powerpc/kernel, since cell wants them as well as pseries (and chrp can use rtas-proc.c too, at least in principle). rtas_fw.c is gone, with its bits moved into rtas_flash.c and rtas.c. Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | | powerpc: Fix random memory corruption in merged elf.hMichael Ellerman2005-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The merged verison of ELF_CORE_COPY_REGS is basically the PPC64 version, with a memset that came from PPC and a few types abstracted out into #defines. But it's not _quite_ right. The first problem is we calculate the number of registers with: nregs = sizeof(struct pt_regs) / sizeof(ELF_GREG_TYPE) For a 32-bit process on a 64-bit kernel that's bogus because the registers are 64 bits, but ELF_GREG_TYPE is u32, so nregs == 88 which is wrong. The other problem is the memset, which assumes a struct pt_regs is smaller than a struct elf_regs. For a 32-bit process on a 64-bit kernel that's false. The fix is to calculate the number of regs using sizeof(unsigned long), which should always be right, and just memset the whole damn thing _before_ copying the registers in. Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
| | * | | powerpc: Implement smp_release_cpus() in C not asmMichael Ellerman2005-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There's no reason for smp_release_cpus() to be asm, and most people can make more sense of C code. Add an extern declaration to smp.h and remove the custom one in machine_kexec.c Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| | * | | powerpc: Cleanup vpa codeMichael Ellerman2005-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | register_vpa() doesn't actually do a VPA register call it just uses the flags you pass it, so rename it to vpa_call() to be clearer. We can then define register_vpa() and unregister_vpa() which are both simple wrappers around vpa_call(). (we'll need unregister_vpa() for kexec soon) We can then cleanup vpa_init(), and because vpa_init() is only called from platforms/pseries we remove the definition in asm-ppc64/smp.h. Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
| | * | | powerpc: Add helper functions for synthesising instructions at runtimeMichael Ellerman2005-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There's a few places already, and soon will be more, where we synthesise branch instructions at runtime. Rather than doing it by hand in each case, it would make sense to have one implementation. Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
| | * | | powerpc: Merge asm-ppc/kexec.h and asm-ppc64/kexec.hMichael Ellerman2005-11-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge include/asm-ppc/kexec.h and include/asm-ppc64/kexec.h. The only thing that's really changed is that we now allocate crash_notes properly on PPC32. It's address is exported via sysfs, so it's not correct for it to be a pointer. I've also removed some of the "we don't use this" comments, because they're wrong (or perhaps were referring only to arch code). Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
| | * | | powerpc: Move plpar_wrappers.h into arch/powerpc/platforms/pseriesMichael Ellerman2005-11-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move plpar_wrappers.h into arch/powerpc/platforms/pseries, fixup white space, and update callers. Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
| | * | | powerpc: Make set_dabr() a ppc_md functionMichael Ellerman2005-11-02
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | Move pSeries specific code in set_dabr() into a ppc_md function, this will allow us to keep plpar_wrappers.h private to platforms/pseries. Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
| | * | Merge Paulus' treeStephen Rothwell2005-11-02
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| | | * | [PATCH] powerpc: Move naca.h to platforms/iseriesDavid Gibson2005-11-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These days, the NACA only exists on iSeries. Therefore, this patch moves naca.h from include/asm-ppc64 to arch/powerpc/platforms/iseries. There was one file including naca.h outside of platforms/iseries - arch/ppc64/kernel/udbg_scc.c. However, that's obviously a hangover from older days. The include is not necessary, so this patch simply removes it. Built and booted on iSeries, built for G5 (which uses udbg_scc.o). Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | | * | [PATCH] powerpc: Move dart.hDavid Gibson2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | asm-ppc64/dart.h is included in exactly one place - arch/powerpc/sysdev/u3_iommu.c. This patch, therefore, moves it into arch/powerpc/sysdev. While we're at it, update the #ifndef/#define protecting the include, and the filename in the comments of u3_iommu.c. Built and booted on pSeries and G5, built for ppc32 powermac. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | | * | [PATCH] powerpc: Merge (move) numnodes.h and sparsemem.hDavid Gibson2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ppc64 versions of numnodes.h and sparsemem.h can be safely moved to asm-powerpc with no changes apart from changing the #define to the standard _ASM_POWERPC_ form. There are no ppc32 versions of these files, because they only have any effect if CONFIG_SPARSEMEM is enabled, which it never can be on ppc32. Built and booted on pSeries (POWER5), built for 32-bit powermac. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | | * | Merge ../linux-2.6Paul Mackerras2005-11-01
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| | * | \ \ Merge iSeries include file moveStephen Rothwell2005-11-02
| | |\ \ \ \ | | | |/ / / | | |/| | |
| | | * | | modify defines according to _ASM_POWERPC_ISERIES_Kelly Daly2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
| | | * | | fix incorrect dirKelly Daly2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
| | | * | | merge filename and modify references to iseries/vio.hKelly Daly2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
| | | * | | merge filename and modify references to iSeries/mf.hKelly Daly2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
| | | * | | merge filename and modify references to iseries/iseries_io.hKelly Daly2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
| | | * | | merge filename and modify references to iseries/lpar_map.hKelly Daly2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
| | | * | | merge filename and modify references to iseries/it_lp_reg_save.hKelly Daly2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
| | | * | | merge filename and modify references to iseries/it_lp_queue.hKelly Daly2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
| | | * | | merge filename and modify references to iseries/it_lp_naca.hKelly Daly2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
| | | * | | merge filename and modify references to iseries/it_exp_vpd_panel.hKelly Daly2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
| | | * | | merge filename and modify references to iseries/hv_types.hKelly Daly2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
| | | * | | merge filename and modify references to iseries/hv_lp_event.hKelly Daly2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
| | | * | | merge filename and modify reference to iseries/hv_lp_config.hKelly Daly2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
| | | * | | merge filename and modify references to iseries/hv_call_xm.hKelly Daly2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kelly Daly <kelly@au.ibm.com>
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