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2014-11-14powerpc: Disable CPU_FTR_TM if TM is disabled by firmwareAneesh Kumar K.V
Firmware is allowed to communicate to us via the "ibm,pa-features" property that TM (Transactional Memory) support is disabled. Currently this doesn't happen on any platform we're aware of, but we should honor it anyway. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-12powerpc/fsl-rio: add support for mapping inbound windowsMartijn de Gouw
Add support for mapping and unmapping of inbound rapidio windows. This allows for drivers to open up a part of local memory on the rapidio network. Also applications can use this and tranfer blocks of data over the network. Signed-off-by: Martijn de Gouw <martijn.de.gouw@prodrive-technologies.com> [scottwood@freescale.com: updated commit message based on review] Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-12powerpc/fsl: Update fman dt binding with clock name and qbman linkScott Wood
The clock name "fmanclk" was given in the example, but not specified in the binding itself. Made clock-names mandatory as otherwise there's not much point having it. Added a reference to the fsl,qman and fsl,bman properties proposed in http://patchwork.ozlabs.org/patch/407034/ and http://patchwork.ozlabs.org/patch/407035/ Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-12powerpc/fsl: Frame Manager Device Tree binding documentIgal Liberman
The Frame Manager (FMan) combines the Ethernet network interfaces with packet distribution logic to provide intelligent distribution and queuing decisions for incoming traffic at line rate. This binding document describes Freescale's Frame Manager hardware attributes that are used by the Frame Manager driver for its basic initialization and configuration. Signed-off-by: Igal Liberman <Igal.Liberman@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-12dt/bindings: Introduce the FSL QorIQ DPAA QMan portal(s)Emil Medve
Portals are memory mapped interfaces to QMan that allow low-latency, lock-less interaction by software running on processor cores, accelerators and network interfaces with the QMan Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Change-Id: I29764fa8093b5ce65460abc879446795c50d7185 Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-12dt/bindings: Introduce the FSL QorIQ DPAA QManEmil Medve
The Queue Manager is part of the Data-Path Acceleration Architecture (DPAA). QMan supports queuing and QoS scheduling of frames to CPUs, network interfaces and DPAA logic modules, maintains packet ordering within flows. Besides providing flow-level queuing, is also responsible for congestion management functions such as RED/WRED, congestion notifications and tail discards. This binding covers the CCSR space programming model Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Change-Id: I3acb223893e42003d6c9dc061db568ec0b10d29b Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-12dt/bindings: Introduce the FSL QorIQ DPAA BMan portal(s)Emil Medve
Portals are memory mapped interfaces to BMan that allow low-latency, lock-less interaction by software running on processor cores, accelerators and network interfaces with the BMan Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Change-Id: I6d245ffc14ba3d0e91d403ac7c3b91b75a9e6a95 Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-12dt/bindings: Introduce the FSL QorIQ DPAA BManEmil Medve
The Buffer Manager is part of the Data-Path Acceleration Architecture (DPAA). BMan supports hardware allocation and deallocation of buffers belonging to pools originally created by software with configurable depletion thresholds. This binding covers the CCSR space programming model Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Change-Id: I3ec479bfb3c91951e96902f091f5d7d2adbef3b2 Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-12powerpc/xmon: Fix build when 4xx=y and 44x=nMichael Ellerman
dump_tlb_44x() is only defined when 44x=y, but the ifdef in xmon.c checks for 4xx, leading to a build failure: arch/powerpc/xmon/xmon.c:912:4: error: implicit declaration of function 'dump_tlb_44x' Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-12Merge branch 'topic/opal-ipmi' into nextMichael Ellerman
2014-11-12powerpc: Fix comment typos in arch/powerpc/include/asm/bitops.hBoqun Feng
In arch/powerpc/include/asm/bitops.h, the comments about bit numbers in large (> 1 word) bitmaps have two typos: - On ppc64 system, the LSB of the 4th word should be bit 192 rather than 196, because if it's bit 196, bit 192-195 will be missing in the bitmap. - On ppc32 system, the LSB of the second word should be bit 32 rather than 31, because bit 31 is already in the first word. This patch fixes these typos. Signed-off-by: Boqun Feng <boqun.feng@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-12powerpc/powernv: Add OPAL IPMI interfaceJeremy Kerr
Recent OPAL firmare adds a couple of functions to send and receive IPMI messages: https://github.com/open-power/skiboot/commit/b2a374da This change updates the token list and wrappers to suit, and adds the platform devices for any IPMI interfaces. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-12powerpc: Fix compilation of emulate_step()Paul Mackerras
Commit be96f63375a1 ("powerpc: Split out instruction analysis part of emulate_step()") added some calls to do_fp_load() and do_fp_store(), which fail to compile on configs with CONFIG_PPC_FPU=n and CONFIG_PPC_EMULATE_SSTEP=y. This fixes the compile by adding #ifdef CONFIG_PPC_FPU around the code that calls these functions. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-12powerpc: Save/restore PPR for KVM hypercallsSuresh E. Warrier
The system call FLIH (first-level interrupt handler) at 0xc00 unconditionally sets hardware priority to medium. For hypercalls, this means we lose guest OS priority. The front end (do_kvm_0x**) to the KVM interrupt handler always assumes that PPR priority is saved in PACA exception save area, so it copies this to the kvm_hstate structure. For hypercalls, this would be the saved priority from any previous exception. Eventually, the guest gets resumed with an incorrect priority. The fix is to save the PPR priority in PACA exception save area before switching HMT priorities in the FLIH so that existing code described above in the KVM interrupt handler can copy it from there into the VCPU's saved context. Signed-off-by: Suresh Warrier <warrier@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org> [mpe: Dropped HMT_MEDIUM_PPR_DISCARD and reworded comment] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-12powerpc/mm: Use PAGE_FACTORGavin Shan
PAGE_FACTOR was defined to reflect the difference between configured page size and fixed 4KB page size. Replace (PAGE_SHIFT - HW_PAGE_SHIFT) with PAGE_FACTOR. Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-12powerpc: Fix bad NULL pointer check in udbg_uart_getc_poll()Anton Blanchard
We have some code in udbg_uart_getc_poll() that tries to protect against a NULL udbg_uart_in, but gets it all wrong. Found with the LLVM static analyzer (scan-build). Fixes: 309257484cc1 ("powerpc: Cleanup udbg_16550 and add support for LPC PIO-only UARTs") Signed-off-by: Anton Blanchard <anton@samba.org> [mpe: Add some newlines for readability while we're here] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc/gamecube/wii: delete unneeded test before of_node_putJulia Lawall
Simplify the error path to avoid calling of_node_put when it is not needed. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc/pseries: delete unneeded test before of_node_putJulia Lawall
Of_node_put supports NULL as its argument, so the initial test is not necessary. Suggested by Uwe Kleine-König. The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e; @@ -if (e) of_node_put(e); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc/mpc5xxx: delete unneeded test before of_node_putJulia Lawall
Of_node_put supports NULL as its argument, so the initial test is not necessary. Suggested by Uwe Kleine-König. The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e; @@ -if (e) of_node_put(e); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc/fsl: fsl_soc: delete unneeded test before of_node_putJulia Lawall
Of_node_put supports NULL as its argument, so the initial test is not necessary. Suggested by Uwe Kleine-König. The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e; @@ -if (e) of_node_put(e); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc/4xx/cpm: delete unneeded test before of_node_putJulia Lawall
Simplify the error path to avoid calling of_node_put when it is not needed. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc/pseries: Quieten relocation on exceptions warningAnton Blanchard
The H_SET_MODE hcall returns H_P2 if a function is not implemented and all callers should handle this case. The call to enable relocation on exceptions currently prints an error message if the feature is not implemented. While H_SET_MODE was first introduced on POWER8 (which has relocation on exceptions), it has been now added on some POWER7 configurations (which does not). Check for H_P2 and print an informational message instead. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc/pseries: Quieten ibm,pcie-link-speed-stats warningAnton Blanchard
The ibm,pcie-link-speed-stats isn't mandatory, so we shouldn't print a high priority error message when missing. One example where we see this is QEMU. Reduce it to pr_debug. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc: LLVM complains about forward declaration of struct rtas_sensorsAnton Blanchard
Move the declaration up to silence the warning. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc: Remove double braces in alignment code.Anton Blanchard
Looks like I introduced this when adding LE support. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc: Don't use local named register variable in current_thread_infoAnton Blanchard
LLVM doesn't support local named register variables and is unlikely to. current_thread_info is using one, fix it by moving it out and calling it __current_r1(). I gave it a bit of an obscure name because we don't want anyone else using it - they should use current_stack_pointer(). This specific case is performance critical and we can't afford to call a function to get it. Furthermore it isn't important to know exactly where in the stack we are since we mask the lower bits. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc: Remove unused vgacon_remap_base & fix build breakMichael Ellerman
The build is broken with CONFIG_PPC32=y, CONFIG_FB_VGA16=y and CONFIG_VGA_CONSOLE=n. The problem is that vgacon_remap_base is not defined. It's used in: #define VGA_MAP_MEM(x,s) (x + vgacon_remap_base) Which is used in the vga16fb.c code. Digging down it seems vgacon_remap_base is never initialised. It used to be, back in arch/ppc (pplus.c and prep_setup.c), but none of that code ever made it to arch/powerpc. So given it's been unused for >6 years, remove it. Whether vga16fb.c works on 32-bit is another question, but this patch shouldn't affect it. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc/jump_label: Use HAVE_JUMP_LABELAnton Blanchard
Commit d4fe0965e208 ("powerpc/jump_label: use HAVE_JUMP_LABEL?") missed a few conversions. Change the remaining uses of CONFIG_JUMP_LABEL to HAVE_JUMP_LABEL. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc/boot: Parse chosen/cmdline-timeout parameterSimon Kagstrom
On some platforms a 5 second timeout during boot might be quite long, so make it configurable. Run the loop at least once to let the user stop the boot by holding a key pressed. If the timeout is set to 0, don't wait for input, which can be used as a workaround if the boot hangs on random data coming in on the serial port. Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net> [mpe: Changelog wording & whitespace] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc: Remove unused CPU_FTRS_A2Michael Ellerman
In commit fb5a515704d7 "Remove platforms/wsp and associated pieces" we removed the last user of CPU_FTRS_A2, so we should remove it too. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc: Remove CPU_FTR_HVMODE from CPU_FTRS_ALWAYSMichael Ellerman
We potentially clear CPU_FTR_HVMODE at runtime in __init_hvmode_206(), so we must make sure it's not set in CPU_FTRS_ALWAYS. This doesn't hurt us in practice at the moment, because we don't support compiling only for CPUs that support CPU_FTR_HVMODE. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc/ftrace: Fix obsolete commentJiri Slaby
CONFIG_MCOUNT is not defined anymore, the corresponding #ifdef there is CONFIG_FUNCTION_TRACER. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc: Remove unused devm_ioremap_prot()Kyle McMartin
Added in 2008, but has never had any in-tree users, and no other architectures provide it. Signed-off-by: Kyle McMartin <kyle@redhat.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc/ftrace: simplify prepare_ftrace_returnAnton Blanchard
Instead of passing in the stack address of the link register to be modified, just pass in the old value and return the new value and rely on ftrace_graph_caller to do the modification. This removes the exception handling around the stack update - it isn't needed and we weren't consistent about it. Later on we would do an unprotected modification: if (!ftrace_graph_entry(&trace)) { *parent = old; Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc/ftrace: Remove mod_return_to_handlerAnton Blanchard
mod_return_to_handler is the same as return_to_handler, except it handles the change of the TOC (r2). Add this into return_to_handler and remove mod_return_to_handler. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc: make __ffs return unsigned longAnton Blanchard
I'm seeing a build warning in mm/nobootmem.c after removing bootmem: mm/nobootmem.c: In function '__free_pages_memory': include/linux/kernel.h:713:17: warning: comparison of distinct pointer types lacks a cast [enabled by default] (void) (&_min1 == &_min2); \ ^ mm/nobootmem.c:90:11: note: in expansion of macro 'min' order = min(MAX_ORDER - 1UL, __ffs(start)); ^ The rest of the worlds seems to define __ffs as returning unsigned long, so lets do that. Signed-off-by: Anton Blanchard <anton@samba.org> Tested-by: Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc: Move sparse_init() into initmem_initAnton Blanchard
We did part of sparse initialisation in setup_arch and part in initmem_init. Put them together. Signed-off-by: Anton Blanchard <anton@samba.org> Tested-by: Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc: Remove superfluous bootmem includesAnton Blanchard
Lots of places included bootmem.h even when not using bootmem. Signed-off-by: Anton Blanchard <anton@samba.org> Tested-by: Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc: Remove some old bootmem related commentsAnton Blanchard
Now bootmem is gone from powerpc we can remove comments mentioning it. Signed-off-by: Anton Blanchard <anton@samba.org> Tested-by: Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-10powerpc: Remove bootmem allocatorAnton Blanchard
At the moment we transition from the memblock alloctor to the bootmem allocator. Gitting rid of the bootmem allocator removes a bunch of complicated code (most of which I owe the dubious honour of being responsible for writing). Signed-off-by: Anton Blanchard <anton@samba.org> Tested-by: Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-07powerpc/dts: Add node(s) for the platform PLLEmil Medve
Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Change-Id: If76cd705a01813abe53396c1486bc13c4289ee92 Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07dt/bindings: qoriq-clock: Add binding for the platform PLLEmil Medve
Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Change-Id: I7950afa9650d15ec7ce2cca89bb2a1e38586d4a5 Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/dts: Factorize the clock control nodeEmil Medve
Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Change-Id: I25ce24a25862b4ca460164159867abefe00ccdd1 Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc: Add INA220 to device tree for supported boardsHongtao Jia
Including: P3041DS P5020DS P5040DS B4QDS Signed-off-by: Jia Hongtao <hongtao.jia@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc: Add ADT7461 to device tree for supported boardsHongtao Jia
Including: T104xRDB T208xQDS B4QDS Signed-off-by: Jia Hongtao <hongtao.jia@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/fsl: Added rcw registers to global utility registersIgal Liberman
The RCW registers are required for the future clock binding implementation. Signed-off-by: Igal Liberman <Igal.Liberman@freescale.com> Change-Id: Ic36dd8bc2959aa7f97fb6fd7bbb8420822fef0a9 Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/mpc85xx: Remove SPI and NAND partition from bsc9131rdb.dtsiAshish Kumar
* Run "mtdparts default" on u-boot to create dynamic partitions * Or use dynamic mtd partition with the help of bootargs in u-boot Append bootargs with: "mtdparts=ff800000.flash:1m(nand_uboot),512K(nand_dtb),8m(nand_kernel),-(fs);\ spiff707000.0:1m(spi_uboot),4m(spi_kernel),512k(spi_dtb),-(fs)'" Signed-off-by: Ashish Kumar <Ashish.Kumar@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: Remove Kconfig symbol FADSPaul Bolle
Commit 39eb56da2b53 ("pcmcia: Remove m8xx_pcmcia driver") removed the only driver that used CONFIG_FADS. Setting the Kconfig symbol FADS is pointless since that commit. Remove it. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: Invalidate non present TLB as early as possibleLEROY Christophe
8xx sometimes need to load a invalid/non-present TLBs in it DTLB asm handler. These must be invalidated separaly as linux mm doesn't. Commit 5efab4a02c89c252fb4cce097aafde5f8208dbfe was invalidating them in arch/powerpc/mm/fault.c. This patch does the invalidation earlier in order to free the TLB as soon as possible. This also has the advantage of removing some 8xx specific code from fault.c Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: Use DAR to save r3 for CPU6 ERRATALEROY Christophe
As we are not using anymore DAR to save registers, it is now available for saving the r3 register used for CPU6 ERRATA handling. Therefore we can remove the major hack which was to use memory location 0 to save r3. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com>
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