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Date: Wed, 2 Dec 2020 10:17:46 -0600 From: Mario Limonciello <mario.limonciello@...l.com> To: Jeff Kirsher <jeffrey.t.kirsher@...el.com>, Tony Nguyen <anthony.l.nguyen@...el.com>, intel-wired-lan@...ts.osuosl.org Cc: linux-kernel@...r.kernel.org, Linux PM <linux-pm@...r.kernel.org>, Netdev <netdev@...r.kernel.org>, Alexander Duyck <alexander.duyck@...il.com>, Jakub Kicinski <kuba@...nel.org>, Sasha Netfin <sasha.neftin@...el.com>, Aaron Brown <aaron.f.brown@...el.com>, Stefan Assmann <sassmann@...hat.com>, David Miller <davem@...emloft.net>, darcari@...hat.com, Yijun.Shen@...l.com, Perry.Yuan@...l.com, Mario Limonciello <mario.limonciello@...l.com>, Yijun Shen <yijun.shen@...l.com> Subject: [PATCH v2 3/5] 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. Tested-by: Yijun Shen <yijun.shen@...l.com> Signed-off-by: Mario Limonciello <mario.limonciello@...l.com> --- drivers/net/ethernet/intel/e1000e/s0ix.c | 33 +++++++++++++++++++++--- 1 file changed, 29 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/intel/e1000e/s0ix.c b/drivers/net/ethernet/intel/e1000e/s0ix.c index c3013edbd9e4..74043e80c32f 100644 --- a/drivers/net/ethernet/intel/e1000e/s0ix.c +++ b/drivers/net/ethernet/intel/e1000e/s0ix.c @@ -1,5 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright(c) 1999 - 2018 Intel Corporation. */ +/* Copyright(c) 1999 - 2018 Intel Corporation. + * Copyright(c) 2020 Dell Inc. + */ #include <linux/netdevice.h> @@ -44,6 +46,26 @@ static bool e1000e_check_me(u16 device_id) return false; } +static bool e1000e_check_subsystem_allowlist(struct pci_dev *dev) +{ + if (dev->subsystem_vendor == PCI_VENDOR_ID_DELL) { + switch (dev->subsystem_device) { + case 0x099f: /* Latitude 5310 */ + case 0x09a0: /* Latitude 5410 */ + case 0x09c9: /* Latitude 5410 */ + case 0x09a1: /* Latitude 5510 */ + case 0x09a2: /* Precision 3550 */ + case 0x09c0: /* Latitude 5411 */ + case 0x09c1: /* Latitude 5511 */ + case 0x09c2: /* Precision 3551 */ + case 0x09c3: /* Precision 7550 */ + case 0x09c4: /* Precision 7750 */ + return true; + } + } + return false; +} + void e1000e_s0ix_entry_flow(struct e1000_adapter *adapter) { struct e1000_hw *hw = &adapter->hw; @@ -273,8 +295,11 @@ void e1000e_maybe_enable_s0ix(struct e1000_adapter *adapter) /* require cannon point or later */ if (hw->mac.type < e1000_pch_cnp) return; - /* turn off on ME configurations */ - if (e1000e_check_me(pdev->device)) - return; + /* check for allowlist of systems */ + if (!e1000e_check_subsystem_allowlist(pdev)) { + /* turn off on ME configurations */ + if (e1000e_check_me(pdev->device)) + return; + } adapter->flags2 |= FLAG2_ENABLE_S0IX_FLOWS; } -- 2.25.1
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