[Intel-wired-lan] [PATCH 2/3] e1000e: Add Dell's Comet Lake systems into s0ix heuristics

[Limonciello, Mario]

> > From: Intel-wired-lan <intel-wired-lan-bounces at osuosl.org> On Behalf Of
> > Mario Limonciello
> > Sent: Sunday, September 27, 2020 9:40 PM
> > To: Kirsher, Jeffrey T <jeffrey.t.kirsher at intel.com>; intel-wired-
> > lan at lists.osuosl.org
> > Cc: Perry.Yuan at dell.com; Yijun.Shen at dell.com; linux-kernel at vger.kernel.org;
> > Mario Limonciello <mario.limonciello at dell.com>
> > Subject: [Intel-wired-lan] [PATCH 2/3] e1000e: Add Dell's Comet Lake systems
> > into s0ix heuristics
> >
> > Dell's Comet Lake Latitude and Precision systems containing i219LM are
> > properly configured and should use the s0ix flows.
> >
> > Signed-off-by: Mario Limonciello <mario.limonciello at dell.com>
> > ---
> >  drivers/net/ethernet/intel/Kconfig        |  1 +
> >  drivers/net/ethernet/intel/e1000e/param.c | 80 ++++++++++++++++++++++-
> >  2 files changed, 80 insertions(+), 1 deletion(-)
> 
> Is there anyone who touched this hardware with this patch willing to provide a
> Tested-by:?
> I am happy to do regression / sanity checks against other e1000e based
> systems, but do not have access to these devices.

Alex (Yijun) who is CC'ed did test them and I expect can add a Tested-By after the
China holidays are over.

> 
> >
> > diff --git a/drivers/net/ethernet/intel/Kconfig
> > b/drivers/net/ethernet/intel/Kconfig
> > index 5aa86318ed3e..280af47d74d2 100644
> > --- a/drivers/net/ethernet/intel/Kconfig
> > +++ b/drivers/net/ethernet/intel/Kconfig
> > @@ -58,6 +58,7 @@ config E1000
> >  config E1000E
> >  	tristate "Intel(R) PRO/1000 PCI-Express Gigabit Ethernet support"
> >  	depends on PCI && (!SPARC32 || BROKEN)
> > +	depends on DMI
> >  	select CRC32
> >  	imply PTP_1588_CLOCK
> >  	help
> > diff --git a/drivers/net/ethernet/intel/e1000e/param.c
> > b/drivers/net/ethernet/intel/e1000e/param.c
> > index e66b222c824b..58e6718c4f75 100644
> > --- a/drivers/net/ethernet/intel/e1000e/param.c
> > +++ b/drivers/net/ethernet/intel/e1000e/param.c
> > @@ -1,6 +1,7 @@
> >  // SPDX-License-Identifier: GPL-2.0
> >  /* Copyright(c) 1999 - 2018 Intel Corporation. */
> >
> > +#include <linux/dmi.h>
> >  #include <linux/netdevice.h>
> >  #include <linux/module.h>
> >  #include <linux/pci.h>
> > @@ -201,6 +202,80 @@ static const struct e1000e_me_supported
> > me_supported[] = {
> >  	{0}
> >  };
> >
> > +static const struct dmi_system_id s0ix_supported_systems[] = {
> > +	{
> > +		/* Dell Latitude 5310 */
> > +		.matches = {
> > +			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> > +			DMI_MATCH(DMI_PRODUCT_SKU, "099F"),
> > +		},
> > +	},
> > +	{
> > +		/* Dell Latitude 5410 */
> > +		.matches = {
> > +			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> > +			DMI_MATCH(DMI_PRODUCT_SKU, "09A0"),
> > +		},
> > +	},
> > +	{
> > +		/* Dell Latitude 5410 */
> > +		.matches = {
> > +			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> > +			DMI_MATCH(DMI_PRODUCT_SKU, "09C9"),
> > +		},
> > +	},
> > +	{
> > +		/* Dell Latitude 5510 */
> > +		.matches = {
> > +			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> > +			DMI_MATCH(DMI_PRODUCT_SKU, "09A1"),
> > +		},
> > +	},
> > +	{
> > +		/* Dell Precision 3550 */
> > +		.matches = {
> > +			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> > +			DMI_MATCH(DMI_PRODUCT_SKU, "09A2"),
> > +		},
> > +	},
> > +	{
> > +		/* Dell Latitude 5411 */
> > +		.matches = {
> > +			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> > +			DMI_MATCH(DMI_PRODUCT_SKU, "09C0"),
> > +		},
> > +	},
> > +	{
> > +		/* Dell Latitude 5511 */
> > +		.matches = {
> > +			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> > +			DMI_MATCH(DMI_PRODUCT_SKU, "09C1"),
> > +		},
> > +	},
> > +	{
> > +		/* Dell Precision 3551 */
> > +		.matches = {
> > +			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> > +			DMI_MATCH(DMI_PRODUCT_SKU, "09C2"),
> > +		},
> > +	},
> > +	{
> > +		/* Dell Precision 7550 */
> > +		.matches = {
> > +			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> > +			DMI_MATCH(DMI_PRODUCT_SKU, "09C3"),
> > +		},
> > +	},
> > +	{
> > +		/* Dell Precision 7750 */
> > +		.matches = {
> > +			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> > +			DMI_MATCH(DMI_PRODUCT_SKU, "09C4"),
> > +		},
> > +	},
> > +	{ }
> > +};
> > +
> >  static bool e1000e_check_me(u16 device_id)
> >  {
> >  	struct e1000e_me_supported *id;
> > @@ -599,8 +674,11 @@ void e1000e_check_options(struct e1000_adapter
> > *adapter)
> >  		}
> >
> >  		if (enabled == S0IX_HEURISTICS) {
> > +			/* check for allowlist of systems */
> > +			if (dmi_check_system(s0ix_supported_systems))
> > +				enabled = S0IX_FORCE_ON;
> >  			/* default to off for ME configurations */
> > -			if (e1000e_check_me(hw->adapter->pdev->device))
> > +			else if (e1000e_check_me(hw->adapter->pdev-
> > >device))
> >  				enabled = S0IX_FORCE_OFF;
> >  		}
> >
> > --
> > 2.25.1
> >
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