From: Frederic Barrat <fbarrat@linux.ibm.com>
To: "Alastair D'Silva" <alastair@au1.ibm.com>, alastair@d-silva.org
Cc: "Benjamin Herrenschmidt" <benh@kernel.crashing.org>,
"Paul Mackerras" <paulus@samba.org>,
"Michael Ellerman" <mpe@ellerman.id.au>,
"Andrew Donnellan" <ajd@linux.ibm.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Dan Williams" <dan.j.williams@intel.com>,
"Vishal Verma" <vishal.l.verma@intel.com>,
"Dave Jiang" <dave.jiang@intel.com>,
"Keith Busch" <keith.busch@intel.com>,
"Ira Weiny" <ira.weiny@intel.com>,
"Geert Uytterhoeven" <geert+renesas@glider.be>,
"Anton Blanchard" <anton@ozlabs.org>,
"Krzysztof Kozlowski" <krzk@kernel.org>,
"Vasant Hegde" <hegdevasant@linux.vnet.ibm.com>,
"David Gibson" <david@gibson.dropbear.id.au>,
"Hari Bathini" <hbathini@linux.ibm.com>,
"Allison Randal" <allison@lohutok.net>,
"Anju T Sudhakar" <anju@linux.vnet.ibm.com>,
"Mahesh Salgaonkar" <mahesh@linux.vnet.ibm.com>,
"Cédric Le Goater" <clg@kaod.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Greg Kurz" <groug@kaod.org>,
"Nicholas Piggin" <npiggin@gmail.com>,
"Masahiro Yamada" <yamada.masahiro@socionext.com>,
"Alexey Kardashevskiy" <aik@ozlabs.ru>,
"Andrew Morton" <akpm@linux-foundation.org>,
"David Hildenbrand" <david@redhat.com>,
"Oscar Salvador" <osalvador@suse.com>,
"Michal Hocko" <mhocko@suse.com>,
"Pavel Tatashin" <pasha.tatashin@soleen.com>,
"Wei Yang" <richard.weiyang@gmail.com>, "Qian Cai" <cai@lca.pw>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
linux-nvdimm@lists.01.org, linux-mm@kvack.org
Subject: Re: [PATCH 10/10] ocxl: Conditionally bind SCM devices to the generic OCXL driver
Date: Thu, 7 Nov 2019 19:08:40 +0100 [thread overview]
Message-ID: <b70644d6-2c71-cd71-5d00-e25d99beea91@linux.ibm.com> (raw)
In-Reply-To: <20191025044721.16617-11-alastair@au1.ibm.com>
Le 25/10/2019 à 06:47, Alastair D'Silva a écrit :
> From: Alastair D'Silva <alastair@d-silva.org>
>
> This patch allows the user to bind OpenCAPI SCM devices to the generic OCXL
> driver.
>
> Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
> ---
I'm wondering if we should upstream this. Is it of any use outside of
some serious debug session for a developer?
Also we would now have 2 drivers picking up the same device ID, since
the SCM driver is always registering for that ID, irrespective of
CONFIG_OCXL_SCM_GENERIC
Fred
> drivers/misc/ocxl/Kconfig | 7 +++++++
> drivers/misc/ocxl/pci.c | 3 +++
> 2 files changed, 10 insertions(+)
>
> diff --git a/drivers/misc/ocxl/Kconfig b/drivers/misc/ocxl/Kconfig
> index 1916fa65f2f2..8a683715c97c 100644
> --- a/drivers/misc/ocxl/Kconfig
> +++ b/drivers/misc/ocxl/Kconfig
> @@ -29,3 +29,10 @@ config OCXL
> dedicated OpenCAPI link, and don't follow the same protocol.
>
> If unsure, say N.
> +
> +config OCXL_SCM_GENERIC
> + bool "Treat OpenCAPI Storage Class Memory as a generic OpenCAPI device"
> + default n
> + help
> + Select this option to treat OpenCAPI Storage Class Memory
> + devices an generic OpenCAPI devices.
> diff --git a/drivers/misc/ocxl/pci.c b/drivers/misc/ocxl/pci.c
> index cb920aa88d3a..7137055c1883 100644
> --- a/drivers/misc/ocxl/pci.c
> +++ b/drivers/misc/ocxl/pci.c
> @@ -10,6 +10,9 @@
> */
> static const struct pci_device_id ocxl_pci_tbl[] = {
> { PCI_DEVICE(PCI_VENDOR_ID_IBM, 0x062B), },
> +#ifdef CONFIG_OCXL_SCM_GENERIC
> + { PCI_DEVICE(PCI_VENDOR_ID_IBM, 0x0625), },
> +#endif
> { }
> };
> MODULE_DEVICE_TABLE(pci, ocxl_pci_tbl);
>
next prev parent reply other threads:[~2019-11-07 18:08 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-25 4:46 [PATCH 00/10] Add support for OpenCAPI SCM devices Alastair D'Silva
2019-10-25 4:46 ` [PATCH 01/10] memory_hotplug: Add a bounds check to __add_pages Alastair D'Silva
2019-10-25 4:46 ` [PATCH 02/10] nvdimm: remove prototypes for nonexistent functions Alastair D'Silva
2019-10-27 23:41 ` Andrew Donnellan
2019-11-07 17:56 ` Frederic Barrat
2019-11-15 4:30 ` Dan Williams
2019-10-25 4:46 ` [PATCH 03/10] powerpc: Add OPAL calls for LPC memory alloc/release Alastair D'Silva
2019-11-07 17:57 ` Frederic Barrat
2019-10-25 4:46 ` [PATCH 04/10] powerpc: Map & release OpenCAPI LPC memory Alastair D'Silva
2019-10-27 21:24 ` kbuild test robot
2019-10-27 21:59 ` kbuild test robot
2019-10-28 2:34 ` kbuild test robot
2019-10-29 1:49 ` Andrew Donnellan
2019-10-29 2:44 ` Alastair D'Silva
2019-10-29 2:47 ` Andrew Donnellan
2019-11-07 17:59 ` Frederic Barrat
2019-10-25 4:47 ` [PATCH 05/10] ocxl: Tally up the LPC memory on a link & allow it to be mapped Alastair D'Silva
2019-11-07 18:02 ` Frederic Barrat
2019-10-25 4:47 ` [PATCH 06/10] ocxl: Add functions to map/unmap LPC memory Alastair D'Silva
2019-11-07 18:05 ` Frederic Barrat
2019-10-25 4:47 ` [PATCH 07/10] ocxl: Save the device serial number in ocxl_fn Alastair D'Silva
2019-11-06 3:10 ` Andrew Donnellan
2019-11-07 18:18 ` Frederic Barrat
2019-10-25 4:47 ` [PATCH 08/10] nvdimm: Add driver for OpenCAPI Storage Class Memory Alastair D'Silva
2019-10-27 22:19 ` kbuild test robot
2019-10-27 22:53 ` kbuild test robot
2019-10-28 1:12 ` [RFC PATCH] nvdimm: scm_get() can be static kbuild test robot
2019-11-14 13:41 ` [PATCH 08/10] nvdimm: Add driver for OpenCAPI Storage Class Memory Frederic Barrat
2019-11-14 16:35 ` Dan Williams
2019-11-18 23:47 ` Andrew Donnellan
2019-11-19 0:04 ` Dan Williams
2019-11-19 2:48 ` Alastair D'Silva
2019-11-19 3:26 ` Andrew Donnellan
2019-11-19 4:41 ` Dan Williams
2019-11-18 23:01 ` Alastair D'Silva
2019-10-25 4:47 ` [PATCH 09/10] powerpc: Enable OpenCAPI Storage Class Memory driver on bare metal Alastair D'Silva
2019-10-28 2:43 ` Oliver O'Halloran
2019-11-08 7:10 ` Frederic Barrat
2020-01-31 4:56 ` Alastair D'Silva
2020-01-31 5:14 ` Dan Williams
2019-10-25 4:47 ` [PATCH 10/10] ocxl: Conditionally bind SCM devices to the generic OCXL driver Alastair D'Silva
2019-10-26 6:43 ` Christoph Hellwig
2019-11-06 3:46 ` Andrew Donnellan
2019-11-07 18:08 ` Frederic Barrat [this message]
2019-11-08 0:37 ` Alastair D'Silva
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