Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (78 commits) [PATCH] powerpc: Add FSL SEC node to documentation [PATCH] macintosh: tidy-up driver_register() return values [PATCH] powerpc: tidy-up of_register_driver()/driver_register() return values [PATCH] powerpc: via-pmu warning fix [PATCH] macintosh: cleanup the use of i2c headers [PATCH] powerpc: dont allow old RTC to be selected [PATCH] powerpc: make powerbook_sleep_grackle static [PATCH] powerpc: Fix warning in add_memory [PATCH] powerpc: update mailing list addresses [PATCH] powerpc: Remove calculation of io hole [PATCH] powerpc: iseries: Add bootargs to /chosen [PATCH] powerpc: iseries: Add /system-id, /model and /compatible [PATCH] powerpc: Add strne2a() to convert a string from EBCDIC to ASCII [PATCH] powerpc: iseries: Make more stuff static in platforms/iseries/mf.c [PATCH] powerpc: iseries: Remove pointless iSeries_(restart|power_off|halt) [PATCH] powerpc: iseries: mf related cleanups [PATCH] powerpc: Replace platform_is_lpar() with a firmware feature [PATCH] powerpc: trivial: Cleanup whitespace in cputable.h [PATCH] powerpc: Remove unused iommu_off logic from pSeries_init_early() [PATCH] powerpc: Unconfuse htab_bolt_mapping() callers ...
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Linus Torvalds
@@ -1365,6 +1365,78 @@ platforms are moved over to use the flattened-device-tree model.
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};
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g) Freescale SOC SEC Security Engines
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Required properties:
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- device_type : Should be "crypto"
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- model : Model of the device. Should be "SEC1" or "SEC2"
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- compatible : Should be "talitos"
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- reg : Offset and length of the register set for the device
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- interrupts : <a b> where a is the interrupt number and b is a
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field that represents an encoding of the sense and level
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information for the interrupt. This should be encoded based on
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the information in section 2) depending on the type of interrupt
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controller you have.
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- interrupt-parent : the phandle for the interrupt controller that
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services interrupts for this device.
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- num-channels : An integer representing the number of channels
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available.
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- channel-fifo-len : An integer representing the number of
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descriptor pointers each channel fetch fifo can hold.
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- exec-units-mask : The bitmask representing what execution units
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(EUs) are available. It's a single 32 bit cell. EU information
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should be encoded following the SEC's Descriptor Header Dword
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EU_SEL0 field documentation, i.e. as follows:
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bit 0 = reserved - should be 0
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bit 1 = set if SEC has the ARC4 EU (AFEU)
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bit 2 = set if SEC has the DES/3DES EU (DEU)
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bit 3 = set if SEC has the message digest EU (MDEU)
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bit 4 = set if SEC has the random number generator EU (RNG)
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bit 5 = set if SEC has the public key EU (PKEU)
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bit 6 = set if SEC has the AES EU (AESU)
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bit 7 = set if SEC has the Kasumi EU (KEU)
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bits 8 through 31 are reserved for future SEC EUs.
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- descriptor-types-mask : The bitmask representing what descriptors
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are available. It's a single 32 bit cell. Descriptor type
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information should be encoded following the SEC's Descriptor
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Header Dword DESC_TYPE field documentation, i.e. as follows:
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bit 0 = set if SEC supports the aesu_ctr_nonsnoop desc. type
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bit 1 = set if SEC supports the ipsec_esp descriptor type
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bit 2 = set if SEC supports the common_nonsnoop desc. type
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bit 3 = set if SEC supports the 802.11i AES ccmp desc. type
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bit 4 = set if SEC supports the hmac_snoop_no_afeu desc. type
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bit 5 = set if SEC supports the srtp descriptor type
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bit 6 = set if SEC supports the non_hmac_snoop_no_afeu desc.type
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bit 7 = set if SEC supports the pkeu_assemble descriptor type
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bit 8 = set if SEC supports the aesu_key_expand_output desc.type
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bit 9 = set if SEC supports the pkeu_ptmul descriptor type
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bit 10 = set if SEC supports the common_nonsnoop_afeu desc. type
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bit 11 = set if SEC supports the pkeu_ptadd_dbl descriptor type
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..and so on and so forth.
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Example:
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/* MPC8548E */
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crypto@30000 {
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device_type = "crypto";
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model = "SEC2";
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compatible = "talitos";
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reg = <30000 10000>;
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interrupts = <1d 3>;
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interrupt-parent = <40000>;
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num-channels = <4>;
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channel-fifo-len = <24>;
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exec-units-mask = <000000fe>;
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descriptor-types-mask = <073f1127>;
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};
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More devices will be defined as this spec matures.
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@@ -121,7 +121,7 @@ accomplished.
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EEH must be enabled in the PHB's very early during the boot process,
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and if a PCI slot is hot-plugged. The former is performed by
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eeh_init() in arch/ppc64/kernel/eeh.c, and the later by
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eeh_init() in arch/powerpc/platforms/pseries/eeh.c, and the later by
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drivers/pci/hotplug/pSeries_pci.c calling in to the eeh.c code.
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EEH must be enabled before a PCI scan of the device can proceed.
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Current Power5 hardware will not work unless EEH is enabled;
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@@ -133,7 +133,7 @@ error. Given an arbitrary address, the routine
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pci_get_device_by_addr() will find the pci device associated
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with that address (if any).
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The default include/asm-ppc64/io.h macros readb(), inb(), insb(),
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The default include/asm-powerpc/io.h macros readb(), inb(), insb(),
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etc. include a check to see if the i/o read returned all-0xff's.
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If so, these make a call to eeh_dn_check_failure(), which in turn
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asks the firmware if the all-ff's value is the sign of a true EEH
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@@ -143,11 +143,12 @@ seen in /proc/ppc64/eeh (subject to change). Normally, almost
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all of these occur during boot, when the PCI bus is scanned, where
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a large number of 0xff reads are part of the bus scan procedure.
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If a frozen slot is detected, code in arch/ppc64/kernel/eeh.c will
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print a stack trace to syslog (/var/log/messages). This stack trace
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has proven to be very useful to device-driver authors for finding
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out at what point the EEH error was detected, as the error itself
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usually occurs slightly beforehand.
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If a frozen slot is detected, code in
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arch/powerpc/platforms/pseries/eeh.c will print a stack trace to
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syslog (/var/log/messages). This stack trace has proven to be very
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useful to device-driver authors for finding out at what point the EEH
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error was detected, as the error itself usually occurs slightly
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beforehand.
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Next, it uses the Linux kernel notifier chain/work queue mechanism to
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allow any interested parties to find out about the failure. Device
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@@ -558,9 +558,9 @@ partitions.
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The proper channel for reporting bugs is either through the Linux OS
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distribution company that provided your OS or by posting issues to the
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ppc64 development mailing list at:
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PowerPC development mailing list at:
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linuxppc64-dev@lists.linuxppc.org
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linuxppc-dev@ozlabs.org
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This request is to provide a documented and searchable public exchange
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of the problems and solutions surrounding this driver for the benefit of
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