Re: [RFC] Add IBM Blue Gene/Q Platform

[Michael Neuling <mikey@neuling.org>]

Jimi Xenidis <jimix@pobox.com> wrote:

> Rather than flood the mailing list with the patches, I've arranged for a git repo to hold the changesets.
> You can find the repo here:
>   <https://github.com/jimix/linux-bgq>
> 
> They are against GregKH's linux-stable.git long-term 3.4.y (y=22) branch.
> The first 9 (6e58088f..) effect common code and the rest are BGQ specific.

Do you actually want this upstream?  I assume no.

Mikey

> 
> Here is a are the summary logs:
> 
> $ git log --reverse linux-stable/linux-3.4.y..
> commit 5a8edb2bdd914597693eed299119ff4c2e6d31f2
> Author: Jimi Xenidis <jimix@pobox.com>
> Date:   Fri Nov 9 09:26:00 2012 -0600
> 
>     powerpc: Fix cputable #ifdef where CONFIG_PPC_A2 is used for CONFIG_PPC_BOOK3E_64
>     
>     Signed-off-by: Jimi Xenidis <jimix@pobox.com>
> 
> commit ea51920d7035c8d23801d6de46261e7d0a537dfd
> Author: Jimi Xenidis <jimix@pobox.com>
> Date:   Fri Nov 9 08:58:27 2012 -0600
> 
>     powerpc/book3e: Remove config for PPC_A2_DD2 since there is no reference to it
>     
>     This must have been leftover from early DD1 days which is not
>     present in any current kernel code.
>     
>     Signed-off-by: Jimi Xenidis <jimix@pobox.com>
> 
> commit 08151401a5db4ff0d441a1b7bf8ad92bd92b14c5
> Author: Jimi Xenidis <jimix@pobox.com>
> Date:   Mon Nov 5 09:38:01 2012 -0600
> 
>     powerpc/dcr: Some native DCR fixes
>     
>     The following fixes have been made:
>      - dcr_read/write_native() must use the indexed version of the
>        m[ft]dcrx since the non-indexed version only allows a 10-bit
>        numerical space, but the C interface allows a full 32-bits.
>      - C bindings for m[ft]dcrx, and the "table" versions, should use
>        "unsigned long" so that they are 64/32 bit neutral.
>      - The "table" versions (__m[ft]cdr) should obtain the table address
>        with LOAD_REG_ADDR(), this will also make it 64/32bit neutral.
>     
>     Signed-off-by: Jimi Xenidis <jimix@pobox.com>
> 
> commit c8320a5daaceed03992d763302020834ea8e17dd
> Author: Jimi Xenidis <jimix@pobox.com>
> Date:   Mon Nov 5 09:12:00 2012 -0600
> 
>     powerpc/dcr: Add 64-bit DCR access methods.
>     
>     This patch adds the ability to make 64-bit Device Control Register
>     (DCR) accesses.
>     
>     Signed-off-by: Jimi Xenidis <jimix@pobox.com>
> 
> commit a763b3f8453b3bd83d7dded8c6644939863af430
> Author: Jimi Xenidis <jimix@pobox.com>
> Date:   Thu Nov 29 12:49:24 2012 -0500
> 
>     powerpc/boot: Add a "spin_threads" hook to platform_ops
>     
>     It is useful for the boot program to arrange for all secondary cpus
>     and threads to enter the kernel in a "kexec" fashion.  This hook makes
>     it possible.
>     
>     Signed-off-by: Jimi Xenidis <jimix@pobox.com>
> 
> commit 391e43393380b514d4d02a42d059619542c7597b
> Author: Jimi Xenidis <jimix@pobox.com>
> Date:   Thu Nov 29 13:01:23 2012 -0500
> 
>     powerpc/kexec: Add kexec "hold" support for Book3e processors
>     
>     This patch add two items:
>     1) Book3e requires that GPR4 survive the "hold" process, so we make
>        sure that happens.
>     2) Book3e has no real mode, and the hold code exploits this.  Since
>        these processors ares always translated, we arrange for the kexeced
>        threads to enter the hold code using the normal kernel linear mapping.
>     
>     Signed-off-by: Jimi Xenidis <jimix@pobox.com>
> 
> commit f6e3c1f706cb6922349d639a74ff6c50acc8b9f8
> Author: Jimi Xenidis <jimix@pobox.com>
> Date:   Wed Dec 5 13:41:25 2012 -0500
> 
>     powerpc: Remove unecessary VSX symbols
>     
>     The symbol THREAD_VSR0 is defined to be the same as THREAD_FPR0.  Its
>     presence causes build issues with more complex configurations.
>     
>     Signed-off-by: Jimi Xenidis <jimix@pobox.com>
> 
> commit 4e817bb42ec8e3d3689877528dd97c4286a870eb
> Author: Jimi Xenidis <jimix@pobox.com>
> Date:   Tue Nov 20 10:10:52 2012 -0600
> 
>     Blue Gene/Q wicked optimizing compiler does not know the rfdi instruction yet
>     
>     Signed-off-by: Jimi Xenidis <jimix@pobox.com>
> 
> commit 2071aa58b2f3b33d97c94e3a127f7c5d4ffaeb34
> Author: Jimi Xenidis <jimix@pobox.com>
> Date:   Tue Nov 20 10:14:22 2012 -0600
> 
>     Blue Gene/Q wicked optimizing compiler does not know the mfdcrx instruction yet
>     
>     Signed-off-by: Jimi Xenidis <jimix@pobox.com>
> 
> commit 6e58088fabedbb2d724637b539ba180c03ed8b68
> Author: Jimi Xenidis <jimix@pobox.com>
> Date:   Wed Oct 31 16:33:21 2012 -0500
> 
>     powerpc/book3e: IBM Blue Gene/Q Boot
>     
>     This patch specifically deals with the initial program load
>     environment so that a boot image (dtbImage.bgq) can be loaded by the
>     BGQ management tools.  The boot code is a little odd because it has to
>     deal with the following issues:
>      - Linux boot image wrappers are 32-bit programs
>      - BGQ Tools only load 64bit ELF programs
>      - BGQ Firmware information is typically loaded at an address > 4G
>      - BGQ FW information contains 64-bit ABI function pointers (which are
>        actually function descriptors) to access firmware methods
>      - BGQ FW methods must be called in 64-bit mode
>     
>     Includes code contributed from:
>       Andrew Tauferner <ataufer@us.ibm.com>
>       Todd Inglett <tinglett@us.ibm.com>
>       Eric Van Hensbergen <ericvh@gmail.com>
>     
>     Signed-off-by: Jimi Xenidis <jimix@pobox.com>
> 
> commit 3bc841935eb4955ce2b2db69bff16f7928464597
> Author: Jimi Xenidis <jimix@pobox.com>
> Date:   Wed Oct 31 22:36:54 2012 -0500
> 
>     powerpc/book3e: IBM Blue Gene/Q Platform and SMP
>     
>     This patch introduces BGQ as a platform and adds SMP functionality
>     
>     Includes code contributed from:
>       Andrew Tauferner <ataufer@us.ibm.com>
>       Todd Inglett <tinglett@us.ibm.com>
>       Eric Van Hensbergen <ericvh@gmail.com>
>     
>     Signed-off-by: Jimi Xenidis <jimix@pobox.com>
> 
> commit 279c0615917b959a652e81f4ad0d886e2d426d85
> Author: Jimi Xenidis <jimix@pobox.com>
> Date:   Wed Dec 5 13:43:22 2012 -0500
> 
>     powerpc/book3e: IBM Blue Gene/Q Quad Processing eXtention (QPX)
>     
>     This enables kernel support for the QPX extention and is intended for
>     processors that support it, usually an IBM Blue Gene processor.
>     Turning it on does not effect other processors but it does add code
>     and will quadruple the per thread save and restore area for the FPU
>     (hense the name).  If you have enabled VSX it will only double the
>     space.
>     
>     Signed-off-by: Jimi Xenidis <jimix@pobox.com>
> 
> commit 6ff45170ab0463fb34d7011e08c7e47c396f0fd7
> Author: Jimi Xenidis <jimix@pobox.com>
> Date:   Fri Nov 23 14:52:14 2012 -0600
> 
>     powerpc/book3e: IBM Blue Gene/Q HVC Based Firmware Console
>     
>     New HVC device that uses the Blue Gene Firmware methods to erad and
>     write to console.
>     
>         Includes code contributed from:
>           Andrew Tauferner <ataufer@us.ibm.com>
>           Todd Inglett <tinglett@us.ibm.com>
>           Eric Van Hensbergen <ericvh@gmail.com>
>     
>     Signed-off-by: Jimi Xenidis <jimix@pobox.com>
> 
> commit e4ddc0c2ad8b3f0260d15d73e153095e95da84ac
> Author: Jimi Xenidis <jimix@pobox.com>
> Date:   Thu Nov 29 15:52:04 2012 -0500
> 
>     powerpc/book3e: IBM Blue Gene/Q PCIe and MSI
>     
>     The following patch adds support for the BG/Q PCIe bridge and MSI interrupts.
>     
>     Includes code contributed from:
>       Jay S. Bryant <jsbryant@us.ibm.com>
>       Eric Van Hensbergen <ericvh@gmail.com>
>     
>     Signed-off-by: Jimi Xenidis <jimix@pobox.com>
> 
> commit 9fc0b6f729f7bd7e31338283640a718fa4b1693b
> Author: Jimi Xenidis <jimix@pobox.com>
> Date:   Wed Dec 5 07:01:49 2012 -0500
> 
>     powerpc/book3e: IBM Blue Gene/Q Character Drivers
>     
>     The following patch adds support for user and administration
>     applications to access the BG/Q control system.
>     
>     Includes code contributed from:
>       Jay S. Bryant <jsbryant@us.ibm.com>
>       Eric Van Hensbergen <ericvh@gmail.com>
>     
>     Signed-off-by: Jimi Xenidis <jimix@pobox.com>
> 
> commit 9df2c4dfde0ac75f8b2bfcf565f78c2b7382b031
> Author: Jimi Xenidis <jimix@pobox.com>
> Date:   Thu Dec 6 18:07:16 2012 -0500
> 
>     Linux 3.4.22-BGQ-rc1
> 
> 
> 
> 
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