wireguard-openbsd/sys/arch/powerpc64/include, branch master WireGuard implementation for the OpenBSD kernel https://git.zx2c4.com/wireguard-openbsd/atom/sys/arch/powerpc64/include?h=master 2021-03-11T11:16:54Z spelling 2021-03-11T11:16:54Z jsg jsg@openbsd.org 2021-03-11T11:16:54Z urn:sha1:36fd90dcf1acf2ddb4ef5dbabe5313b3a8d46ee2 OPAL implements firmware calls that abstract communicating with the BMC over 2021-01-23T12:10:08Z kettenis kettenis@openbsd.org 2021-01-23T12:10:08Z urn:sha1:c5fc2d4914929c0917173549b6372d64cb18ba33 IPMI. Use these calls to add support for impi(4) on PowerNV systems. ok dlg@ Enable support for floating-point exceptions. We always run in "precise" 2021-01-09T13:14:02Z kettenis kettenis@openbsd.org 2021-01-09T13:14:02Z urn:sha1:068793ccd4d9da0f69bf5536a9c727065f20b05d mode. On modern processors (POWER8 and later) there is no performance penalty for this as long as exceptions are disabled in the FPSCR (which is the default). This way we don't have to implement an architecture-dependent system call to set the mode, as it can only be done by the kernel. With help from gkoehler@ ok gkoehler@ Enter power-saving mode on POWER9 (ISA v3) 2020-12-30T06:06:30Z gkoehler gkoehler@openbsd.org 2020-12-30T06:06:30Z urn:sha1:196daab381bbbbcb721d4c428764249109b38970 When opal(4) attaches, look in the device tree for a psscr value. In cpu_idle_cycle(), use this psscr value and the stop instruction to wait for the next interrupt. In mp kernels, cpu_unidle() now sends an interrupt. In "sysctl hw.sensors", the power and temperature sensors from opalsens(4) may show lower values. The cpu may exit stop at the system reset vector after losing user registers. If so, restore some registers. For now, ignore deeper stop states that would lose hypervisor registers. Our mp kernel uses only the first hardware thread of each core. Take the extra threads from the firmware and stop them forever; this may switch the core from SMT4 to single-thread mode and increase performance. partly by kettenis@, ok kettenis@ Clear FSCR register. This gives us a sane default state where all facilities 2020-12-22T11:55:44Z kettenis kettenis@openbsd.org 2020-12-22T11:55:44Z urn:sha1:94f240f4ab8a2f277eeb799825b6816c784202c2 are disabled by default on all CPUs. Hardwire bus_space_read_raw_N() and bus_space_write_raw_N() to 2020-11-15T23:13:00Z kettenis kettenis@openbsd.org 2020-11-15T23:13:00Z urn:sha1:48f49e59af81b0f5bda9746fee3b5ef8c65752bc generic_space_read_N() and generic_space_write_N() as they should not do any byte swapping. Add code to determine the console devie node. 2020-10-30T13:07:48Z kettenis kettenis@openbsd.org 2020-10-30T13:07:48Z urn:sha1:fe6512f2e4b2fa62a9f3deb268765ae07e2c5e67 Add forward declaration of struct trapframe. 2020-10-24T21:42:10Z kettenis kettenis@openbsd.org 2020-10-24T21:42:10Z urn:sha1:832971c7e83a92d988cafa1531bca7933edcdcd4 Add retguard to OPAL functions in powerpc64 locore. 2020-10-22T23:35:43Z mortimer mortimer@openbsd.org 2020-10-22T23:35:43Z urn:sha1:36507d518a0bd344c045a56918ebce2eb42ef609 ok deraadt@ kettenis@ Only use OPAL_CONSOLE_FLUSH if the firmware implements it. Should help 2020-10-19T18:54:58Z kettenis kettenis@openbsd.org 2020-10-19T18:54:58Z urn:sha1:3dc1a60b8df32d9d516808a9b74d4d5c839c51f6 on POWER8 machines with older versions of OPAL.