From: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
To: Imre Kaloz <kaloz@kernel.org>
Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 00/38] MIPS: SGI-IP27: add support for the IP35 (Bedrock hub) machines
Date: Fri, 2 Oct 2026 17:46:15 +0200 [thread overview]
Message-ID: <ar_Rx5PR5cI-gigR@alpha.franken.de> (raw)
In-Reply-To: <cover.1790857966.git.kaloz@kernel.org>
On Thu, Oct 01, 2026 at 06:11:35PM +0200, Imre Kaloz wrote:
> This series adds support for the SGI machines built around the Bedrock
> hub (IP35), such as Fuel and Tezro, to the IP27 platform code.
>
>
> Patches 1-17 teach the IP27 code the Bedrock hub: detection, the node
> address layout and register windows, the node id, CPU slots, memory
> banks, both PIs and the kernel load address.
>
> Patches 18-27 add the crossbar, bridge and I/O parts of these machines:
> PXBow, XBridge, PIC and IOC4.
>
> Patches 28-38 add the L1 system controller and what it provides, the
> Odyssey graphics widget, the KLCONFIG console and a topology package
> id per CPU.
>
> Tested on SGI Fuel and Tezro. The NMI dump reaches the 8250 console
> only with "MIPS: SGI-IP27: print the NMI dump on an nbcon console",
> posted separately.
>
> On IP27 (Hub) machines:
> - patch 17 moves the kernel up by 144KB, and the 144KB below it stays
> reserved and unused;
> - with patch 21 SWIOTLB takes 64MB of node 0 on a multi-node Origin;
> - the XBridge DMA window (patch 21) and the w1 change (patch 33) do
> nothing on a Hub with classic Bridges.
>
> Given I have no IP27 boxes, none of this was booted on one.
> ip27_defconfig and ip30_defconfig build at every patch.
>
> An XBridge or PIC on a Bedrock hub takes its board setup from the
> first board part number the L1 reports that the setup table knows
> (patch 30), so on a machine with several bricks every such bridge gets
> that one board's setup.
>
> Patch 36 registers the Odyssey graphics widget as the "sgi-odyssey"
> platform device used by the Odyssey DRM driver, a separate series.
thank you for your patches, I'm going on vacation tomorrow for 2 weeks,
so I'll look at them after it.
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
prev parent reply other threads:[~2026-10-02 15:46 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-01 16:11 Imre Kaloz
2026-10-01 16:11 ` [PATCH 01/38] MIPS: Xtalk: guard the widget identification table from assembly Imre Kaloz
2026-10-01 16:11 ` [PATCH 02/38] MIPS: SGI-IP27: dump the NMI save areas the CPU scan recorded Imre Kaloz
2026-10-01 16:11 ` [PATCH 03/38] MIPS: SGI-IP27: add REMOTE_HUB_PI_S()/REMOTE_HUB_PI_L() Imre Kaloz
2026-10-01 16:11 ` [PATCH 04/38] MIPS: SGI-IP27: detect Bedrock hubs at boot Imre Kaloz
2026-10-01 16:11 ` [PATCH 05/38] MIPS: SGI-IP27: widen Kconfig for the Bedrock-based machines Imre Kaloz
2026-10-01 16:11 ` [PATCH 06/38] MIPS: SGI-IP27: fold the dead SN1 arm out of klconfig.h Imre Kaloz
2026-10-01 16:11 ` [PATCH 07/38] MIPS: SGI-IP27: choose the node address layout at runtime Imre Kaloz
2026-10-01 16:11 ` [PATCH 08/38] MIPS: SGI-IP27: add the Bedrock hub register windows Imre Kaloz
2026-10-01 16:11 ` [PATCH 09/38] MIPS: SGI-IP27: decode a Bedrock hub's node id and system size Imre Kaloz
2026-10-01 16:11 ` [PATCH 10/38] MIPS: SGI-IP27: put a Bedrock hub's boot CPU in slot 0 Imre Kaloz
2026-10-01 16:11 ` [PATCH 11/38] MIPS: SGI-IP27: lay out node memory in 1GB banks on Bedrock hubs Imre Kaloz
2026-10-01 16:11 ` [PATCH 12/38] MIPS: SGI-IP27: reserve the bottom 64MB of node 0 " Imre Kaloz
2026-10-01 16:11 ` [PATCH 13/38] MIPS: SGI-IP27: route interrupt masks and slices through both PIs Imre Kaloz
2026-10-01 16:11 ` [PATCH 14/38] MIPS: SGI-IP27: address a CPU's own PI for NMI, IPI and RT counter Imre Kaloz
2026-10-01 16:11 ` [PATCH 15/38] MIPS: SGI-IP27: take a CPU's node from the CPU table in per_cpu_init() Imre Kaloz
2026-10-01 16:11 ` [PATCH 16/38] MIPS: SGI-IP27: resolve the mapped-kernel node shift at runtime Imre Kaloz
2026-10-01 16:11 ` [PATCH 17/38] MIPS: SGI-IP27: load the kernel at node offset 0x40000 Imre Kaloz
2026-10-01 16:11 ` [PATCH 18/38] MIPS: SGI-IP27: xbow_probe(): recognize KLTYPE_PBRICK_XBOW Imre Kaloz
2026-10-01 16:11 ` [PATCH 19/38] MIPS: ip27_defconfig: enable the IOC3 MFD, its cell drivers and tg3 Imre Kaloz
2026-10-01 16:11 ` [PATCH 20/38] net: ethernet: sgi: ioc3-eth: apply the DMA attributes only to 64-bit addresses Imre Kaloz
2026-10-01 16:11 ` [PATCH 21/38] MIPS: SGI-IP27: route XBridge and PIC DMA through the 32-bit window Imre Kaloz
2026-10-01 16:11 ` [PATCH 22/38] MIPS: SGI-IP27: recognize the PXBow crossbar Imre Kaloz
2026-10-01 16:11 ` [PATCH 23/38] MIPS: PCI: xtalk-bridge: recognize the PIC widget's 64-bit-only registers Imre Kaloz
2026-10-01 16:11 ` [PATCH 24/38] MIPS: PCI: xtalk-bridge: match PIC's register-level differences Imre Kaloz
2026-10-01 16:12 ` [PATCH 25/38] rtc: m48t35: support the SGI IP35 timekeeper's 1968 year base Imre Kaloz
2026-10-01 16:12 ` [PATCH 26/38] mfd: ioc3: add support for IOC4 Imre Kaloz
2026-10-01 16:12 ` [PATCH 27/38] MIPS: SGI-IP27: dispatch the early console between IOC3 and IOC4 Imre Kaloz
2026-10-01 16:12 ` [PATCH 28/38] MIPS: SGI-IP27: add L1 system controller support Imre Kaloz
2026-10-01 16:12 ` [PATCH 29/38] MIPS: SGI-IP27: wire the L1 into reset and the Ethernet address Imre Kaloz
2026-10-01 16:12 ` [PATCH 30/38] MIPS: PCI: xtalk-bridge: take the board part number from the L1 Imre Kaloz
2026-10-01 16:12 ` [PATCH 31/38] mfd: ioc3: add IP34 system-board entry to ioc3_infos[] Imre Kaloz
2026-10-02 10:02 ` Lee Jones
2026-10-02 10:29 ` Imre Kaloz
2026-10-01 16:12 ` [PATCH 32/38] net: ethernet: sgi: ioc3-eth: fall back to the platform MAC address Imre Kaloz
2026-10-01 16:12 ` [PATCH 33/38] MIPS: SGI-IP27: don't register a w1 master on an XBridge or PIC Imre Kaloz
2026-10-01 16:12 ` [PATCH 34/38] MIPS: SGI-IP27: report a Bedrock machine as SGI IP35 Imre Kaloz
2026-10-01 16:12 ` [PATCH 35/38] MIPS: SGI-IP27: identify the machine by the L1 brick type Imre Kaloz
2026-10-01 16:12 ` [PATCH 36/38] MIPS: SGI-IP27: register the Odyssey graphics widget Imre Kaloz
2026-10-01 16:12 ` [PATCH 37/38] MIPS: SGI-IP27: take the console from the KLCONFIG header on IP35 Imre Kaloz
2026-10-01 16:12 ` [PATCH 38/38] MIPS: SGI-IP27: give each CPU its own topology package id Imre Kaloz
2026-10-02 15:46 ` Thomas Bogendoerfer [this message]
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