- 10 Oct, 2008 4 commits
-
-
Josh Poimboeuf authored
The powerpc 32-bit and 64-bit kernel_thread functions don't properly propagate errors being returned by the clone syscall. (In the case of error, the syscall exit code returns a positive errno in r3 and sets the CR0[SO] bit.) This patch fixes that by negating r3 if CR0[SO] is set after the syscall. Signed-off-by: Josh Poimboeuf <jpoimboe@us.ibm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Roel Kluin authored
Offset is unsigned and when an address isn't found in the vma map vma_map_lookup() returns the vma physical address + 0x10000000. vma_map_lookup used to return 0xffffffff on a failed lookup, but a change was made to return the vma physical address + 0x10000000 There are two callers of vam_map_lookup: one of them correctly deals with this new return value, but the other (below) did not. Signed-off-by: Roel Kluin <12o3l@tiscali.nl> Acked-by: Maynard Johnson <maynardj@us.ibm.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Anton Vorontsov authored
When no interrupt is specified the pata_of_platform fills the irq_res resource with -1, which is wrong to do for two reasons: 1. By definition, 'no irq' should be IRQ 0, not some negative integer; 2. pata_platform checks for irq_res.start > 0, but since irq_res.start is unsigned type, the check will be true for `-1'. Reported-by: Steven A. Falco <sfalco@harris.com> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Nathan Fontenot authored
Testing hotplug memory remove has revealed that we can oops in pseries_lmb_remove(). The incorrect shift causes a NULL pointer dereference in the page_zone() inline routine. I have only been able to reproduce the oops on kernels with large pages enabled. Tested on Power5 and Power6 with and without large pages enabled. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
- 07 Oct, 2008 11 commits
-
-
Benjamin Herrenschmidt authored
When manipulating 64-bit PCI addresses, the code would lose the top 32-bit in a couple of places when shifting a pfn due to missing type casting from the 32-bit pfn to a 64-bit resource before the shift. This breaks using newer X servers for example on 440 machines with the PCI bus above 32-bit. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Vitaly Mayatskikh authored
rtas_log_read() doesn't check file flags for O_NONBLOCK and blocks non-blocking readers of /proc/ppc64/rtas/error_log when there is no data available. This fixes it. Also rtas_log_read() returns now with ENODATA to prevent suspending of process in wait_event_interruptible() when logging facility was switched off and log is already empty. Signed-off-by: Vitaly Mayatskikh <v.mayatskih@gmail.com> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Timur Tabi authored
Fix various defconfigs for Freescale chip based boards to remove CONFIG_PPC_PMAC or CONFIG_PPC_CHRP which crept in due to those being default y Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Johannes Berg authored
powerpc uses CONFIG_FORCE_MAX_ZONEORDER, and some things depend on it being at least 10 when 64k pages are not configured (notably the dart iommu code with CONFIG_PM). The defaults are fine, but when going from a 64K pages config to one without 64K pages, MAX_ORDER stays at 9 which is too low for 4K pages. This patch makes the Kconfig enforce at least the defaults. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Timur Tabi <timur@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Johannes Berg authored
A bug in my initial 64-bit hibernation code breaks it when using page sizes that aren't 4K. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Johann Felix Soden authored
The variable statindex in send_request is never read, so remove it. Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Geert Uytterhoeven authored
Documentation/powerpc/smp.txt is so outdated that it makes sense to just remove it. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Geert Uytterhoeven authored
commit 14cf11af ("powerpc: Merge enough to start building in arch/powerpc.") unwired /proc/ppc_htab, and commit 917f0af9 ("powerpc: Remove arch/ppc and include/asm-ppc") removed the rest of the /proc/ppc_htab support, but there are still a few references left. Kill them for good. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Roland Dreier authored
Commit 8b150478 ("ppc: make phys_mem_access_prot() work with pfns instead of addresses") fixed page_is_ram() in arch/ppc to avoid overflow for addresses above 4G on 32-bit kernels. However arch/powerpc's page_is_ram() is missing the same fix -- it computes a physical address by doing pfn << PAGE_SHIFT, which overflows if pfn corresponds to a page above 4G. In particular this causes pages above 4G to be mapped with the wrong caching attribute; for example many ppc440-based SoCs have PCI space above 4G, and mmap()ing MMIO space may end up with a mapping that has caching enabled. Fix this by working with the pfn and avoiding the conversion to physical address that causes the overflow. This patch compares the pfn to max_pfn, which is a semantic change from the old code -- that code compared the physical address to high_memory, which corresponds to max_low_pfn. However, I think that was is another bug, since highmem pages are still RAM. Reported-by: vb <vb@vsbe.com> Signed-off-by: Roland Dreier <rolandd@cisco.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Sebastien Dugue authored
Add a .gitignore in arch/powerpc/kernel to ignore the generated vmlinux.lds. Signed-off-by: Sebastien Dugue <sebastien.dugue@bull.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Benjamin Herrenschmidt authored
-
- 02 Oct, 2008 7 commits
-
-
Victor Gallardo authored
Add a defconfig for the AMCC Arches evaluation board Signed-off-by: Victor Gallardo <vgallardo@amcc.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
-
Victor Gallardo authored
Basic functionality for the AMCC Arches eval Board. Signed-off-by: Victor Gallardo <vgallardo@amcc.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
-
Victor Gallardo authored
The Arches Evaluation board is based on the AMCC 460GT SoC chip. This board is a dual processor board with each processor providing independent resources for Rapid IO, Gigabit Ethernet, and serial communications. Each 460GT has it's own 512MB DDR2 memory, 32MB NOR FLASH, UART, EEPROM and temperature sensor, along with a shared debug port. The two 460GT's will communicate with each other via shared memory, Gigabit Ethernet and x1 PCI-Express. Signed-off-by: Victor Gallardo <vgallardo@amcc.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
-
Victor Gallardo authored
Add support for the phy types found on the Arches and other PowerPC 460 based boards. Signed-off-by: Victor Gallardo <vgallardo@amcc.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
-
Matthias Fuchs authored
This patch allows the 4xx (conventional) PCI bridge to be disabled via the device tree. This is needed for 4xx PCI adapter hardware. Use the PCI node's status property to disable the PCI bridge. Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
-
Benjamin Herrenschmidt authored
-
Benjamin Herrenschmidt authored
-
- 01 Oct, 2008 1 commit
-
-
Kumar Gala authored
The math emulation code is centered around a set of generic macros that provide the core of the emulation that are shared by the various architectures and other projects (like glibc). Each arch implements its own sfp-machine.h to specific various arch specific details. For historic reasons that are now lost the powerpc math-emu code had its own version of the common headers. This moves us to using the kernel generic version and thus getting fixes when those are updated. Also cleaned up exception/error reporting from the FP emulation functions. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-
- 30 Sep, 2008 3 commits
-
-
Josh Boyer authored
The PowerPC 405EZ SoC has some differences in the interrupt layout and handling for the MAL. The SERR, TXDE, and RXDE interrupts are OR'd into a single interrupt. Also, due to the possibility for interrupt coalescing, the TXEOB and RXEOB interrupts require an interrupt bit to be cleared in the ICINTSTAT SDR. This sets the proper MAL feature bits for 405EZ boards, and adds a common shared handler for SERR, TXDE, and RXDE. The defines for the ICINTSTAT DCR are added to the proper header file as well. This has been adapted from code originally written by Stefan Roese. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
-
Josh Boyer authored
There are some PowerPC SoCs that do odd things with the MAL handling. In order to accommodate them, we need to introduce a feature mechanism that is similar to the existing emac_has_feature function. This adds a feature variable to the mal_instance structure, and adds a mal_has_feature function. Two features are defined and are guarded by Kconfig options that are selected by the affected platforms. MAL_FTR_CLEAR_ICINSTAT is used for platforms that need to clear the interrupt bits in the ICINTSTAT SDR for txeob/rxeob. This is common on MAL implementations that have interrupt coalescing. MAL_FTR_COMMON_ERR_INT is used for platforms that have SERR, TXDE, and RXDE OR'd into a single interrupt bit. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
-
Josh Boyer authored
Some PowerPC 40x chips have errata that force us not to use the integrated flow control. We have the feature defined, but it currently can't be used because it is never added to EMAC_FTRS_POSSIBLE. This adds a Kconfig option for affected platforms to select and puts the feature in the EMAC_FTRS_POSSIBLE list. This is set for PowerPC 405EZ platforms as well. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
-
- 29 Sep, 2008 3 commits
-
-
Martyn Welch authored
Support for the SBC610 VPX Single Board Computer from GE Fanuc (PowerPC MPC8641D). Fixup to correctly reconfigure USB, provided by an NEC uPD720101, after device is reset. This requires a set of chip specific registers in the devices configuration space to be correctly written, enabling all ports and switching the device to use an external 48-MHz Oscillator. Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-
Becky Bruce authored
For many of the embedded boards, "model" and "Machine" are printing the same thing; remove the redundant code and allow the generic show_cpuinfo to print the model information. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Acked-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-
Anton Vorontsov authored
mpc83xx_wdt is the OF driver now, so we don't need fsl_soc constructor. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-
- 25 Sep, 2008 1 commit
-
-
Kumar Gala authored
Now that arch/ppc is gone we don't need CONFIG_PPC_MERGE anymore remove the dead code associated with !CONFIG_PPC_MERGE. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-
- 24 Sep, 2008 10 commits
-
-
Becky Bruce authored
This rearranges a bit of code, and adds support for 36-bit physical addressing for configs that use a hashed page table. The 36b physical support is not enabled by default on any config - it must be explicitly enabled via the config system. This patch *only* expands the page table code to accomodate large physical addresses on 32-bit systems and enables the PHYS_64BIT config option for 86xx. It does *not* allow you to boot a board with more than about 3.5GB of RAM - for that, SWIOTLB support is also required (and coming soon). Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-
Kumar Gala authored
Implement _PAGE_SPECIAL and pte_special() for 32-bit powerpc. This bit will be used by the fast get_user_pages() to differenciate PTEs that correspond to a valid struct page from special mappings that don't such as IO mappings obtained via io_remap_pfn_ranges(). We currently only implement this on sub-arch that support SMP or will so in the future (6xx, 44x, FSL-BookE) and not (8xx, 40x). Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-
Kumar Gala authored
There are some minor issues with support 64-bit PTEs on a 32-bit processor when dealing with SMP. * We need to order the stores in set_pte_at to make sure the flag word is set second. * Change pte_clear to use pte_update so only the flag word is cleared * Added a WARN_ON to set_pte_at to ensure the pte isn't present for the 64-bit pte/SMP case (to ensure our assumption of this fact). Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Becky Bruce <becky.bruce@freescale.com>
-
Kumar Gala authored
Introduced a new set of low level tlb invalidate functions that do not broadcast invalidates on the bus: _tlbil_all - invalidate all _tlbil_pid - invalidate based on process id (or mm context) _tlbil_va - invalidate based on virtual address (ea + pid) On non-SMP configs _tlbil_all should be functionally equivalent to _tlbia and _tlbil_va should be functionally equivalent to _tlbie. The intent of this change is to handle SMP based invalidates via IPIs instead of broadcasts as the mechanism scales better for larger number of cores. On e500 (fsl-booke mmu) based cores move to using MMUCSR for invalidate alls and tlbsx/tlbwe for invalidate virtual address. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-
Becky Bruce authored
Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-
Becky Bruce authored
We essentially adopt the 64-bit dma code, with some changes to support 32-bit systems, including HIGHMEM. dma functions on 32-bit are now invoked via accessor functions which call the correct op for a device based on archdata dma_ops. If there is no archdata dma_ops, this defaults to dma_direct_ops. In addition, the dma_map/unmap_page functions are added to dma_ops because we can't just fall back on map/unmap_single when HIGHMEM is enabled. In the case of dma_direct_*, we stop using map/unmap_single and just use the page version - this saves a lot of ugly ifdeffing. We leave map/unmap_single in the dma_ops definition, though, because they are needed by the iommu code, which does not implement map/unmap_page. Ideally, going forward, we will completely eliminate map/unmap_single and just have map/unmap_page, if it's workable for 64-bit. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-
Becky Bruce authored
Use the struct device's numa_node instead; use accessor functions to get/set numa_node. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-
Becky Bruce authored
32-bit platforms are about to start using dma.c; move the iommu dma ops into their own file to make this a bit cleaner. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-
Becky Bruce authored
This is in preparation for the merge of the 32 and 64-bit dma code in arch/powerpc. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-
Kumar Gala authored
The initial patch had the option at the top level which wasn't quite right. Moving under the platform options is a bit better. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-