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| * | | | | | | powerpc/book3e-64: Wait til generic_calibrate_decr to enable decrementerKumar Gala2009-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Match what we do on 32-bit Book-E processors and enable the decrementer in generic_calibrate_decr. We need to make sure we disable the decrementer early in boot since we currently use lazy (soft) interrupt on 64-bit Book-E and possible get a decrementer exception before we are ready for it. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | powerpc/book3e-64: Move the default cpu table entryKumar Gala2009-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the default cpu entry table for CONFIG_PPC_BOOK3E_64 to the very end since we will probably want to support both 32-bit and 64-bit kernels for some processors that are higher up in the list. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | powerpc/mm: Add MMU features for TLB reservation & Paired MAS registersKumar Gala2009-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support for TLB reservation (or TLB Write Conditional) and Paired MAS registers are optional for a processor implementation so we handle them via MMU feature sections. We currently only used paired MAS registers to access the full RPN + perm bits that are kept in MAS7||MAS3. We assume that if an implementation has hardware page table at this time it also implements in TLB reservations. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | powerpc: Adjust base and index registers in Altivec macrosMichael Wolf2009-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On POWER6 systems RA needs to be the base and RB the index. If they are reversed you take a misdirect hit. Signed-off-by: Mike Wolf <mjwolf@us.ibm.com> ---- Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | powerpc: Name xpn & x fields in HW Hash PTE formatBecky Bruce2009-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, the 36-bit code was using these bits, but they had never been named in the pte format definition. This patch just gives those fields their proper names and adds a comment that they are only present on some processors. There is no functional code change. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | powerpc: Add CONFIG_DMA_API_DEBUG supportFUJITA Tomonori2009-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | powerpc: Handle SWIOTLB mapping error properlyFUJITA Tomonori2009-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | powerpc: Use asm-generic/dma-mapping-common.hFUJITA Tomonori2009-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | powerpc: use dma_map_ops structFUJITA Tomonori2009-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This converts uses dma_map_ops struct (in include/linux/dma-mapping.h) instead of POWERPC homegrown dma_mapping_ops. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | powerpc: Remove swiotlb_pci_dma_opsFUJITA Tomonori2009-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now swiotlb_pci_dma_ops is identical to swiotlb_dma_ops; we can use swiotlb_dma_ops with any devices. This removes swiotlb_pci_dma_ops. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | powerpc: Remove addr_needs_map in struct dma_mapping_opsFUJITA Tomonori2009-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds max_direct_dma_addr to struct dev_archdata to remove addr_needs_map in struct dma_mapping_ops. It also converts dma_capable() to use max_direct_dma_addr. max_direct_dma_addr is initialized in pci_dma_dev_setup_swiotlb(), called via ppc_md.pci_dma_dev_setup hook. For further information: http://marc.info/?t=124719060200001&r=1&w=2 Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | Merge commit 'tip/iommu-for-powerpc' into nextBenjamin Herrenschmidt2009-08-28
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| * \ \ \ \ \ \ \ Merge commit 'kumar/next' into nextBenjamin Herrenschmidt2009-08-26
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| | * | | | | | | | powerpc/qe_lib: Set gpio data before changing the direction to outputMichael Barkowski2009-08-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This avoids having a short glitch if the desired initial value is not the same as what was previously in the data register. Signed-off-by: Michael Barkowski <michaelbarkowski@ruggedcom.com> Acked-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | | | | | | powerpc/85xx: Add QE USB support for MPC8569E-MDS boardsAnton Vorontsov2009-08-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Add gpio-controller node for BCSR17, it is used to control USB speed and VBUS; - Add timer node for QE GTM, needed for USB host; - Add usb node itself; - Add some probing code for BCSR GPIOs. NOTE: QE USB doesn't work on prototype boards, but should work on pilot boards if specs and schematics are correct, though we don't have the pilot boards to actually test it. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | | | | | | powerpc/82xx: Add CPM USB Gadget support for MPC8272ADS boardsAnton Vorontsov2009-08-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Add usb node; - Configure pins and clocks; - Enable USB function in BCSR. The support was successfully tested using serial and ethernet gadget drivers. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | | | | | | powerpc/82xx: Fix BCSR bits for MPC8272ADS boardsAnton Vorontsov2009-08-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mpc8272_ads.c is using BCSR bits definitions from pq2ads.h, but according to User's Guide the bits are wrong for MPC8272ADS boards (I guess definitions from pq2ads should only be used for PQ2FADS boards). So, let's introduce our own definitions for MPC8272ADS, and don't include pq2ads.h. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | | | | | | powerpc/85xx: Add eSDHC support for MPC8536DS boardsAnton Vorontsov2009-08-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch simply adds sdhci node to the device tree. We specify clock-frequency manually, so that eSDHC will work without upgrading U-Boot. Though, that'll only work for default setup (1500 MHz) on new board revisions. For non-default setups, it's recommended to upgrade U-Boot, since it will fixup clock-frequency automatically. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | | | | | | powerpc/85xx: sbc8560 - remove "has-rstcr" from global utilities blockPaul Gortmaker2009-08-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The earlier mpc8560 CPUs don't have the RSTCR at 0xe00b0 in the GUTS. The generic reboot code uses this tag to determine if it should be using the RSTCR for reboot, so remove it from the board definition. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | | | | | | powerpc/85xx: issue fsl_soc reboot warning only when applicablePaul Gortmaker2009-08-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some CPU, like the MPC8560 don't have a RSTCR in the Global Utilities Block. These boards will implement their own reboot call, and not use this code, so we should only warn about the absence of the GUTS RSTCR when the default reboot code is used. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | | | | | | powerpc/85xx: sbc8560 - Fix warm reboot with board specific reset functionLiang Li2009-08-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The existing fsl_rstcr_restart function is not applicable to the mpc8560. The Global Utilities Block on this earlier CPU doesn't have the control/reset register at 0xe00b0. This implements a board specific reset function that uses the RCR(Reset Control Register) of the sbc8560's EPLD to do a reset. Signed-off-by: Liang Li <Liang.Li@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | | | | | | powerpc/83xx: sbc8349 - update defconfig, enable MTD, USB storagePaul Gortmaker2009-08-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With flash partition entries in the DTS file, MTD might as well be enabled in the defconfig. In a similar vein, enable USB and enough related options (SCSI/ext2/ext3) so that a user can read and write to a generic USB flash drive as well. Also, this board only has the two default SOC UARTs, so adjust the UART config accordingly. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | | | | | | powerpc/83xx: Fix incorrect PCI interrupt map in SBC834x DTSLiang Li2009-08-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allows interrupts to occur on the sbc834x. Currently PCI devices get assigned an incorrect IRQ and so the interrupt count never increases. This was tested with the 82546GB based dual port E1000 PCI-X NIC which uses two distinct IRQ lines on the one card. root@localhost:/root> cat /proc/interrupts | grep eth 17: 78 IPIC Level eth1 48: 27121 IPIC Level eth0 Signed-off-by: Liang Li <liang.li@windriver.com> Signed-off-by: Yang Shi <yang.shi@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | | | | | | powerpc/83xx: Add localbus node and MTD partitions for SBC834xLiang Li2009-08-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is 8MB flash, 8kB EEPROM and 128MB SDRAM on the sbc834x local bus, so add a localbus node in DTS with MTD partitions. The recent U-boot commit fe613cdd4eb moves u-boot to the beginning of flash, hence the legacy label on the partition at the end of flash. Signed-off-by: Liang Li <liang.li@windriver.com> Signed-off-by: Yang Shi <yang.shi@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | | | | | | powerpc/83xx: Remove second USB node from SBC834x DTSLiang Li2009-08-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since only one of the SoC USB devices is brought out to a physical connector on the board, remove the 2nd (USB-DR) node from the DTS. Having it present and USB enabled will cause a hang at boot. Signed-off-by: Liang Li <liang.li@windriver.com> Signed-off-by: Yang Shi <yang.shi@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | | | | | | powerpc/85xx: Add support for P2020RDB boardPoonam Aggrwal2009-08-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for the P2020RDB reference board from Freescale. Overview of P2020RDB platform - DDR DDR2 1G - NOR Flash 16MByte - NAND Flash 32MByte - 3 Ethernet interfaces 1) etSEC1 - RGMII - connected to a 5 port Vitesse Switch(VSC7385) - Switch is memory mapped through eLBC interface(CS#2) - IRQ1 2) etSEC2 - SGMII - connected to VSC8221 - IRQ2 3) etSEC3 - RGMII - connected to VSC8641 - IRQ3 - 2 1X PCIe interfaces - SD/MMC ,USB - SPI EEPROM - Serial I2C EEPROM Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | | | | | | powerpc/booke: Move MMUCSR definition into mmu-book3e.hKumar Gala2009-08-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The MMUCSR is now defined as part of the Book-3E architecture so we can move it into mmu-book3e.h and add some of the additional bits defined by the architecture specs. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | | | | | | powerpc/82xx: mgcoge - updated defconfigHeiko Schocher2009-08-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - add I2C support - add FCC1 and FCC2 support Signed-off-by: Heiko Schocher <hs@denx.de> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | | | | | | | powerpc/pseries: Reduce the polling interval in __cpu_up()Gautham R Shenoy2009-08-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Time time taken for a single cpu online operation on a pseries machine is as follows: Dedicated LPAR (POWER6): ~220ms. Shared LPAR (POWER5) : ~240ms. Of this time, approximately 200ms is taken up by __cpu_up(). This is because we poll every 200ms to check if the new cpu has notified it's presence through the cpu_callin_map. We repeat this operation until the new cpu sets the value in cpu_callin_map or 5 seconds elapse, whichever comes earlier. However, using completion_structs instead of polling loops, the time taken by the new processor to indicate it's presence has found to be less than 1ms on pseries. This method however may not work on all powerpc platforms due to the time-base synchronization code. Keeping this in mind, we could reduce msleep polling interval from 200ms to 1ms while retaining the 5 second timeout. With this, the time taken for a cpu online operation changes as follows: Dedicated LPAR (POWER6): 20-25ms. Shared LPAR (POWER5) : 60-80ms. In both these cases, it was found that the code polls through the loop only once indicating that 1ms is a reasonable value, atleast on pseries. The code needs testing on other powerpc platforms. Signed-off-by: Gautham R Shenoy <ego@in.ibm.com> Acked-by: Joel Schopp <jschopp@austin.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc: Remove SMP warning from PowerMac cpufreqBastian Blank2009-08-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Thu, Aug 13, 2009 at 04:14:58PM +1000, Benjamin Herrenschmidt wrote: > On Tue, 2009-08-11 at 11:39 +0200, Bastian Blank wrote: > > This patch just disables this driver on SMP kernels, as it is obviously > > not supported. > Why not remove the #error instead ? :-) I don't think it's still > meaningful, especially since we use the timebase for delays nowadays > which doesn't depend on the CPU frequency... Your call. Take this one: The build of a PowerMac 32bit kernel currently fails with error: #warning "WARNING, CPUFREQ not recommended on SMP kernels" Thie patch removes the not longer applicable SMP warning from the PowerMac cpufreq code. Signed-off-by: Bastian Blank <waldi@debian.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc: Fix __flush_icache_range on 44xJosh Boyer2009-08-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ptrace POKETEXT interface allows a process to modify the text pages of a child process being ptraced, usually to insert breakpoints via trap instructions. The kernel eventually calls copy_to_user_page, which in turn calls __flush_icache_range to invalidate the icache lines for the child process. However, this function does not work on 44x due to the icache being virtually indexed. This was noticed by a breakpoint being triggered after it had been cleared by ltrace on a 440EPx board. The convenient solution is to do a flash invalidate of the icache in the __flush_icache_range function. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc/mm: Cleanup handling of execute permissionBenjamin Herrenschmidt2009-08-26
| |/ / / / / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is an attempt at cleaning up a bit the way we handle execute permission on powerpc. _PAGE_HWEXEC is gone, _PAGE_EXEC is now only defined by CPUs that can do something with it, and the myriad of #ifdef's in the I$/D$ coherency code is reduced to 2 cases that hopefully should cover everything. The logic on BookE is a little bit different than what it was though not by much. Since now, _PAGE_EXEC will be set by the generic code for executable pages, we need to filter out if they are unclean and recover it. However, I don't expect the code to be more bloated than it already was in that area due to that change. I could boast that this brings proper enforcing of per-page execute permissions to all BookE and 40x but in fact, we've had that now for some time as a side effect of my previous rework in that area (and I didn't even know it :-) We would only enable execute permission if the page was cache clean and we would only cache clean it if we took and exec fault. Since we now enforce that the later only work if VM_EXEC is part of the VMA flags, we de-fact already enforce per-page execute permissions... Unless I missed something Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | Merge commit 'paulus-perf/master' into nextBenjamin Herrenschmidt2009-08-19
| |\ \ \ \ \ \ \ \
| * | | | | | | | | powerpc: use consistent types in mktreeStephen Rothwell2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gcc v4.4 currently produces this build warning: arch/powerpc/boot/mktree.c: In function 'main': arch/powerpc/boot/mktree.c:104: warning: dereferencing type-punned pointer will break strict-aliasing rules tmpbuf is only used as an array of unsigned ints, so declare it that way. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc/vmlinux.lds: Move _edata downMichael Ellerman2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently _edata does not include several data sections, this causes the kernel's report of memory usage at boot to not match reality, and also prevents kmemleak from working - because it scan between _sdata and _edata for pointers to allocated memory. This mirrors a similar change made recently to the x86 linker script. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc: Enable GCOVMichael Ellerman2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make it possible to enable GCOV code coverage measurement on powerpc. Lightly tested on 64-bit, seems to work as expected. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc: Switch to asm-generic/hardirq.hChristoph Hellwig2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | hardirq.h on powerpc defines a __last_jiffy_stamp field, but it's not actually used anywhere. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc: Use DIV_ROUND_CLOSEST in time init codeJulia Lawall2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d but is perhaps more readable. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @haskernel@ @@ #include <linux/kernel.h> @depends on haskernel@ expression x,__divisor; @@ - (((x) + ((__divisor) / 2)) / (__divisor)) + DIV_ROUND_CLOSEST(x,__divisor) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc/cell: Move CBE_IOPTE_* to <asm/cell-regs.h>Geert Uytterhoeven2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As <asm/iommu.h> doesn't contain any other hardware specific definitions but only interfaces. Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc: Missing tests for NULL after ioremap()roel kluin2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Missing tests after ioremap() Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc/prom_init: Evaluate mem kernel parameter for early allocationBenjamin Krill2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Evaluate mem kernel parameter for early memory allocations. If mem is set no allocation in the region above the given boundary is allowed. The current code doesn't take care about this and allocate memory above the given mem boundary. Signed-off-by: Benjamin Krill <ben@codiert.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc: ARRAY_SIZE changes in pasemi and powermac codeStoyan Gaydarov2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These changes were a direct result of using a semantic patch More information can be found at http://www.emn.fr/x-info/coccinelle/ Signed-off-by: Stoyan Gaydarov <sgayda2@uiuc.edu> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc/nvram: Allow byte length reads from mmio NVRAM driverMartyn Welch2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a byte length read and write interface compatible with the nvram_generic driver interface to the mmio driver. Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc/sputrace: Use the generic event tracerChristoph Hellwig2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I wrote sputrace before generic tracing infrastrucure was available. Now that we have the generic event tracer we can convert it over and remove a lot of code: 8 files changed, 45 insertions(+), 285 deletions(-) To use it make sure CONFIG_EVENT_TRACING is enabled and then enable the spufs trace channel by echo 1 > /sys/kernel/debug/tracing/events/spufs/spufs_context/enable and then read the trace records using e.g. cat /sys/kernel/debug/tracing/trace Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc/mm: Fix assert_pte_locked to work properly on uniprocessorKumar Gala2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the pte_lockptr is a spinlock it gets optimized away on uniprocessor builds so using spin_is_locked is not correct. We can use assert_spin_locked instead and get the proper behavior between UP and SMP builds. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc/86xx: Update GE Fanuc sbc310 DTSMartyn Welch2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update GE Fanuc DTS to match the alterations suggested during the merge of the ppc9a DTS in commit 740d36ae6344f38c4da64c2ede765d7d2dd1f132 Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc/86xx: Enable XMC site on GE Fanuc SBC310Martyn Welch2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables the XMC (PCIe daughter card) site on the SBC310. STG enter the description for the patch above. Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc/86xx: Correct reading of information presented in cpuinfoMartyn Welch2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | /proc/cpuinfo should be showing the boards revision and the revision of the FPGA fitted. The functions currently used to access this information as incorrect. Additionally the VME geographical address of the PPC9A and it's status as system contoller are available in the board registers. Show these in cpuinfo. Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc/83xx: Add eSDHC support for MPC837xE-RDB/WLAN boardsAnton Vorontsov2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Actually, the support is already there, but it requires newer U-Boots (to fill-in clock-frequency, and setup pin multiplexing). Though, it appears that on RDB boards USBB pins aren't multiplexed between USB and eSDHC (unlike MDS boards, where USB and eSDHC share pctl and pwrfault pins). So, for RDB boards we can safely setup pinmux and manually fill-in clock-frequency, thus making eSDHC work even with older u-boots. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | | powerpc/85xx: Add support for I2C EEPROMs on MPC8548CDS boardsAnton Vorontsov2009-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch simply adds four eeprom nodes to MPC8548CDS' device tree. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-10 05:49:06 -0400