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2017-10-18skiboot 5.9-rc3 release notesv5.9-rc3Stewart Smith1-0/+42
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-10-16cpu: Add OPAL_REINIT_CPUS_TM_SUSPEND_DISABLEDMichael Ellerman1-0/+8
Add a new CPU reinit flag, "TM Suspend Disabled", which requests that CPUs be configured so that TM (Transactional Memory) suspend mode is disabled. Currently this always fails, because skiboot has no way to query the state. A future hostboot change will add a mechanism for skiboot to determine the status and return an appropriate error code. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-10-16skiboot 5.9-rc2 release notesv5.9-rc2Stewart Smith1-0/+246
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-10-15doc: Update VPD, ECID documentationVasant Hegde2-4/+16
Recently we added `ecid`, `wafer-id` and `wafer-location` properties under xscom node. Lets document these properties. Also update VPD documentation. Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-10-15doc: clarify locking and async of OPAL_SENSOR_READStewart Smith1-1/+6
Reported-by: Robert Lippert <rlippert@google.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-10-11skiboot 5.4.8 release notesStewart Smith1-0/+158
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com> (cherry picked from commit 43290f90e46d632ed5a314292c317e6f813c3b74) Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-10-11fsp: return OPAL_BUSY_EVENT on failure sending FSP_CMD_POWERDOWN_NORMStewart Smith2-4/+20
We had a race condition between FSP Reset/Reload and powering down the system from the host: Roughly: FSP Host --- ---- Power on Power on (inject EPOW) (trigger FSP R/R) Processes EPOW event, starts shutting down calls OPAL_CEC_POWER_DOWN (is still in R/R) gets OPAL_INTERNAL_ERROR, spins in opal_poll_events (FSP comes back) spinning in opal_poll_events (thinks host is running) The call to OPAL_CEC_POWER_DOWN is only made once as the reset/reload error path for fsp_sync_msg() is to return -1, which means we give the OS OPAL_INTERNAL_ERROR, which is fine, except that our own API docs give us the opportunity to return OPAL_BUSY when trying again later may be successful, and we're ambiguous as to if you should retry on OPAL_INTERNAL_ERROR. For reference, the linux code looks like this: >static void __noreturn pnv_power_off(void) >{ > long rc = OPAL_BUSY; > > pnv_prepare_going_down(); > > while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) { > rc = opal_cec_power_down(0); > if (rc == OPAL_BUSY_EVENT) > opal_poll_events(NULL); > else > mdelay(10); > } > for (;;) > opal_poll_events(NULL); >} Which means that *practically* our only option is to return OPAL_BUSY or OPAL_BUSY_EVENT. We choose OPAL_BUSY_EVENT for FSP systems as we do want to ensure we're running pollers to communicate with the FSP and do the final bits of Reset/Reload handling before we power off the system. Additionally, we really should update our documentation to point all of these return codes and what action an OS should take. CC: stable Reported-by: Pridhiviraj Paidipeddi <ppaidipe@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com> Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Acked-by: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-10-11skiboot 5.9-rc1 release notesv5.9-rc1Stewart Smith2-0/+531
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-09-27doc: update skiboot overviewStewart Smith3-51/+94
Updates for P9, xz compressed and STB wrapped payloads amongst a great many other things. Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-09-20core: POWER9 implement OPAL_SIGNAL_SYSTEM_RESETNicholas Piggin1-10/+16
This implements OPAL_SIGNAL_SYSTEM_RESET, using scom registers to quiesce the target thread and raise a system reset exception on it. It has been tested on DD2 with stop0 ESL=0 and ESL=1 shallow power saving modes. DD1 is not implemented because it is sufficiently different as to make support difficult. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [stewart@linux.vnet.ibm.com: fixup hdat_to_dt test] Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-09-19doc/opal-flash: fix typoStewart Smith1-1/+1
Fixes: https://github.com/open-power/skiboot/pull/85 Suggested-by: Joel Nider <JOELN@il.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-09-19skiboot: Documentation typo in opal-return-cpuDaniel Black1-2/+2
changed OPAL_REINIT_CPU -> OPAL_REINIT_CPUS Signed-off-by: Daniel Black <daniel.black@au.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-09-19skiboot: Document P9 possible flags to OPAL_REINIT_CPUSDaniel Black1-1/+4
Signed-off-by: Daniel Black <daniel.black@au.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-09-19Add Documenation for opal_slw_set_regAkshay Adiga1-0/+46
Signed-off-by: Akshay Adiga <akshay.adiga@linux.vnet.ibm.com> Reviewed-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-09-19doc: Update OPAL API call IDs for OPAL_NPU_Stewart Smith1-3/+3
Documentation was always the one that was wrong, so we update it to reflect what was merged. Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-09-19skiboot-5.4.7 release notesStewart Smith1-0/+30
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com> (cherry picked from commit 17661bef0e0968e60e0938e646e6d3ab0e201d46) Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-09-19add skiboot-5.1.21 release notesStewart Smith1-0/+24
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com> (cherry picked from commit 7d64a8b4daa00a78e49493668ad4fd6789bfc883) Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-09-12xive: Documentation updatesBenjamin Herrenschmidt1-23/+107
Correct the documentation in a couple of places to match the actual behaviour and improve bits and pieces of it Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-09-04vas: Update documentation for chip-idSukadev Bhattiprolu1-2/+4
Update the device-tree documentation to include a note about the 'ibm,chip-id' field in the platform device node for VAS. While here, remove some trailing spaces. Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-315.8 release notes: s/Tuesday/Thursday.Stewart Smith1-1/+1
Unfortunately, I cannot blame this on the interational date line. Reported-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-31skiboot 5.8 release notesv5.8Stewart Smith1-0/+709
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-30hw/npu2.c: Add ibm, nvlink-speed device-tree propertyAlistair Popple1-1/+6
NVLink2 links can support multiple different speeds. However the device driver has no way of determining which speed was programmed so pass it down as a device tree property. Signed-off-by: Alistair Popple <alistair@popple.id.au> Acked-by: Reza Arbab <arbab@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-22Fix release date for 5.8-rc1Stewart Smith1-1/+1
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-22skiboot 5.8-rc1 release notesv5.8-rc1Stewart Smith2-0/+482
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-18skiboot 5.1.20 release notesStewart Smith1-0/+173
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com> (cherry picked from commit 8a9c042997ee77d99db062f0a35da4e9b264dd6e) Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-11sensor-groups : occ: Add 'ops' DT propertyShilpasri G Bhat1-7/+12
Add new device-tree property 'ops' to define different operations supported on each sensor-group. Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-04phb4: Enable PCI peer-to-peerFrederic Barrat1-0/+50
P9 supports PCI peer-to-peer: a PCI device can write directly to the mmio space of another PCI device. It completely by-passes the CPU. It requires some configuration on the PHBs involved: 1. on the initiating side, the address for the read/write operation is in the mmio space of the target, i.e. well outside the range normally allowed. So we disable range-checking on the TVT entry in bypass mode. 2. on the target side, we need to explicitly enable p2p by setting a bit in a configuration register. It has the side-effect of reserving an outbound (as seen from the CPU) store queue for p2p. Therefore we only enable p2p on the PHBs using it, as we don't want to waste the resource if we don't have to. P9 supports p2p mmio writes. Reads are currently only supported if the two devices are under the same PHB but that is expected to change in the future, and it raises questions about intermediate switches configuration, so we report an error for the time being. The patch adds a new OPAL call to allow the OS to declare a p2p (initiator, target) pair. Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com> Reviewed-by: Russell Currey <ruscur@russell.cc> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-01doc/console-log: minor updatesStewart Smith1-4/+15
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-01doc: RST syntax fixesStewart Smith9-33/+52
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-01doc: update copyright noticesStewart Smith1-3/+3
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-01NX: Describe device-tree changes for P9 NX compression enginesHaren Myneni1-4/+33
Describe device-tree entries needed for 842 and gzip compression engines on P9 NX. Signed-off-by: Haren Myneni <haren@us.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-01vas: Create MMIO device tree nodeSukadev Bhattiprolu1-0/+28
Create a device tree node for VAS and add properties that Linux will need to configure/use VAS. Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-07-28sensors: occ: Add support to clear sensor groupsShilpasri G Bhat2-0/+82
Adds a generic API to clear sensor groups. OCC inband sensor groups such as CSM, Profiler and Job Scheduler can be cleared using this API. It will clear the min/max of all sensors belonging to OCC sensor groups. Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-07-28psr: occ: Add support to change power-shifting-ratioShilpasri G Bhat2-0/+132
Add support to set the CPU-GPU power shifting ratio which is used by the OCC power capping algorithm. PSR value of 100 takes all power away from CPU first and a PSR value of 0 caps GPU first. Documentation enhanced by Stewart Smith. Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-07-28powercap: occ: Add a generic powercap frameworkShilpasri G Bhat2-0/+144
This patch adds a generic powercap framework and exports OCC powercap sensors using which system powercap can be set inband through OPAL-OCC command-response interface. Documentation for powercap enhanced by Stewart Smith. Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-07-25skiboot-5.7 release notesv5.7Stewart Smith1-0/+1508
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-07-13doc: skiboot-5.7-rc2 release notesv5.7-rc2Stewart Smith1-0/+197
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-07-13numa/associativity: Add a new level of NUMA for GPU'sBalbir Singh1-1/+1
Today we have an issue where the NUMA nodes corresponding to GPU's have the same affinity/distance as normal memory nodes. Our reference-points today supports two levels [0x4, 0x4] for normal systems and [0x4, 0x3] for Power8E systems. This patch adds a new level [0x4, X, 0x2] and uses node-id as at all levels for the GPU. Cc: Reza Arbab <arbab@linux.vnet.ibm.com> Cc: Alistair Popple <alistair@popple.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Balbir Singh <bsingharora@gmail.com> Reviewed-by: Alistair Popple <alistair@popple.id.au> Acked-by: Reza Arbab <arbab@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-07-04doc/device-tree: improve root node docStewart Smith1-20/+29
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-07-03skiboot-5.7-rc1 release notesv5.7-rc1Stewart Smith1-0/+979
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-06-27skiboot: Add documentation for IMC opal callAnju T Sudhakar1-0/+87
Add documentation for new OPAL Call APIs added for In Memory Collection(IMC) infrastructure. Three new OPAL Call APIs are added and they are opal_imc_counters_init(int Domain, u64 address, u64 cpu_pir) opal_imc_counters_start(int Domain, u64 cpu_pir) opal_imc_counters_stop(int Domain, u64 cpu_pir) Document details the input parameters and return values. Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Anju T Sudhakar <anju@linux.vnet.ibm.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-06-27skiboot/doc: Add devicetree binding document for IMCMadhavan Srinivasan1-0/+72
Add a device tree binding documentation for the In Memory Collection counter infrastructure. Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-06-27skiboot/doc: Add doc/imc.rst documentationMadhavan Srinivasan2-0/+55
Add imc.rst documentation to detail the In-Memory Collection Counters infrastructure and interface Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-06-20NPU2: Add flag to nvlink config space indicating DL reset stateAlistair Popple1-2/+2
Device drivers need to be able to determine if the DL is out of reset or not so they can safely probe to see if links have already been trained. This patch adds a flag to the vendor specific config space indicating if the DL is out of reset. Signed-off-by: Alistair Popple <alistair@popple.id.au> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-06-14Add skiboot-5.4.6 release notesStewart Smith1-0/+117
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com> (cherry picked from commit cf81313413067463d312198b7bf74c654a8f4396) Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-06-09Add skiboot-5.4.5 release notesStewart Smith1-0/+56
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com> (cherry picked from commit df2984393d40221b6d963839f4885d8fb8f4ce27) Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-06-07doc: Fix output of version string when using Sphinx with Python 3Andrew Donnellan1-2/+2
Our Sphinx configuration gets the current skiboot version by using the subprocess module to run make_version.sh. In Python 2, this returns a value of type str, but in Python 3, this returns bytes instead. Decode those bytes into a string so we see "skiboot 5.6.blah" rather than "skiboot b'5.6.blah\n'" in the documentation output. Tested using Sphinx with both Python 2 and 3. Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-05-31occ: Fix Pstate ordering for P9Shilpasri G Bhat2-10/+48
In P9 the pstate values are positive. They are continuous set of unsigned integers [0 to +N] where Pmax is 0 and Pmin is N. The linear ordering of pstates for P9 has changed compared to P8. P8 has neagtive pstate values advertised as [0 to -N] where Pmax is 0 and Pmin is -N. This patch adds helper routines to abstract pstate comparison with pmax and adds sanity pstate limit checks. This patch also fixes pstate arithmetic by using labs(). Suggested-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com> Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-05-24skiboot-5.6.0 release notesskiboot-5.6.0Stewart Smith1-0/+30
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-05-19skiboot 5.6.0-rc2 release notesskiboot-5.6.0-rc2Stewart Smith1-0/+72
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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