From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 41Gb4c0gVTzF1MY for ; Thu, 28 Jun 2018 20:05:19 +1000 (AEST) Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w5SA3km9129699 for ; Thu, 28 Jun 2018 06:05:16 -0400 Received: from e06smtp03.uk.ibm.com (e06smtp03.uk.ibm.com [195.75.94.99]) by mx0b-001b2d01.pphosted.com with ESMTP id 2jvuxpcjq1-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 28 Jun 2018 06:05:15 -0400 Received: from localhost by e06smtp03.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 28 Jun 2018 11:05:14 +0100 From: Frederic Barrat To: alastair@au1.ibm.com, andrew.donnellan@au1.ibm.com, vaibhav@linux.ibm.com, clombard@linux.ibm.com, felix@linux.ibm.com, linuxppc-dev@lists.ozlabs.org Cc: huyn@mellanox.com Subject: [PATCH v2 00/10] cxl: Remove abandonned capi support for the Mellanox CX4 Date: Thu, 28 Jun 2018 12:04:59 +0200 Message-Id: <20180628100509.17413-1-fbarrat@linux.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , An attempt was made to add capi support for the Mellanox CX4 card, so that it could operate in "traditional" PCI mode or capi mode. The project ended up being canceled and a different approach was taken for CX5. Mellanox never upstreamed any capi support in their CX4 driver. CX4 was not following exactly the CAIA 1.0 model, so some CX4-specific code was added. That code is now dead and hasn't been tested for a while, so it's probably broken anyway. Let's remove it. It has been agreed with engineers at Mellanox, of course. No user API is affected. Some (unused) symbols exported by cxl are removed. Most of the patch set consists of reverts of older patches, with sometimes very minor tweaking. The last patch aggregates a few changes where reverting was not possible easily. Tests run to prevent regressions: - memcpy tests on POWER8 and POWER9 - Mellanox CX5, which uses a different code path, based on cxllib - cxlflash tests on POWER8 Changelog: v2: add missing signed-offs for the revert patches Alastair D'Silva (7): Revert "cxl: Add kernel API to allow a context to operate with relocate disabled" Revert "cxl: Add support for interrupts on the Mellanox CX4" Revert "cxl: Add preliminary workaround for CX4 interrupt limitation" Revert "cxl: Add kernel APIs to get & set the max irqs per context" Revert "cxl: Add cxl_check_and_switch_mode() API to switch bi-modal cards" Revert "cxl: Add support for using the kernel API with a real PHB" Revert "powerpc/powernv: Add support for the cxl kernel api on the real phb" Frederic Barrat (3): Revert "cxl: Add cxl_slot_is_supported API" Revert "cxl: Allow a default context to be associated with an external pci_dev" cxl: Remove abandonned capi support for the Mellanox CX4, final cleanup arch/powerpc/include/asm/pnv-pci.h | 7 - arch/powerpc/platforms/powernv/pci-cxl.c | 199 ------------ arch/powerpc/platforms/powernv/pci-ioda.c | 22 +- arch/powerpc/platforms/powernv/pci.h | 15 - drivers/misc/cxl/Kconfig | 8 - drivers/misc/cxl/Makefile | 2 +- drivers/misc/cxl/api.c | 132 -------- drivers/misc/cxl/base.c | 83 ----- drivers/misc/cxl/context.c | 3 +- drivers/misc/cxl/cxl.h | 33 -- drivers/misc/cxl/debugfs.c | 5 - drivers/misc/cxl/guest.c | 3 - drivers/misc/cxl/main.c | 5 - drivers/misc/cxl/native.c | 3 +- drivers/misc/cxl/pci.c | 351 ++-------------------- drivers/misc/cxl/phb.c | 44 --- drivers/misc/cxl/vphb.c | 46 +-- include/misc/cxl-base.h | 10 - include/misc/cxl.h | 68 ----- 19 files changed, 58 insertions(+), 981 deletions(-) delete mode 100644 drivers/misc/cxl/phb.c -- 2.17.1