138 lines · c
1// SPDX-License-Identifier: GPL-2.02/*3 * Thunderbolt driver - quirks4 *5 * Copyright (c) 2020 Mario Limonciello <mario.limonciello@dell.com>6 */7 8#include "tb.h"9 10static void quirk_force_power_link(struct tb_switch *sw)11{12 sw->quirks |= QUIRK_FORCE_POWER_LINK_CONTROLLER;13 tb_sw_dbg(sw, "forcing power to link controller\n");14}15 16static void quirk_dp_credit_allocation(struct tb_switch *sw)17{18 if (sw->credit_allocation && sw->min_dp_main_credits == 56) {19 sw->min_dp_main_credits = 18;20 tb_sw_dbg(sw, "quirked DP main: %u\n", sw->min_dp_main_credits);21 }22}23 24static void quirk_clx_disable(struct tb_switch *sw)25{26 sw->quirks |= QUIRK_NO_CLX;27 tb_sw_dbg(sw, "disabling CL states\n");28}29 30static void quirk_usb3_maximum_bandwidth(struct tb_switch *sw)31{32 struct tb_port *port;33 34 if (tb_switch_is_icm(sw))35 return;36 37 tb_switch_for_each_port(sw, port) {38 if (!tb_port_is_usb3_down(port))39 continue;40 port->max_bw = 16376;41 tb_port_dbg(port, "USB3 maximum bandwidth limited to %u Mb/s\n",42 port->max_bw);43 }44}45 46static void quirk_block_rpm_in_redrive(struct tb_switch *sw)47{48 sw->quirks |= QUIRK_KEEP_POWER_IN_DP_REDRIVE;49 tb_sw_dbg(sw, "preventing runtime PM in DP redrive mode\n");50}51 52struct tb_quirk {53 u16 hw_vendor_id;54 u16 hw_device_id;55 u16 vendor;56 u16 device;57 void (*hook)(struct tb_switch *sw);58};59 60static const struct tb_quirk tb_quirks[] = {61 /* Dell WD19TB supports self-authentication on unplug */62 { 0x0000, 0x0000, 0x00d4, 0xb070, quirk_force_power_link },63 { 0x0000, 0x0000, 0x00d4, 0xb071, quirk_force_power_link },64 /*65 * Intel Goshen Ridge NVM 27 and before report wrong number of66 * DP buffers.67 */68 { 0x8087, 0x0b26, 0x0000, 0x0000, quirk_dp_credit_allocation },69 /*70 * Limit the maximum USB3 bandwidth for the following Intel USB471 * host routers due to a hardware issue.72 */73 { 0x8087, PCI_DEVICE_ID_INTEL_ADL_NHI0, 0x0000, 0x0000,74 quirk_usb3_maximum_bandwidth },75 { 0x8087, PCI_DEVICE_ID_INTEL_ADL_NHI1, 0x0000, 0x0000,76 quirk_usb3_maximum_bandwidth },77 { 0x8087, PCI_DEVICE_ID_INTEL_RPL_NHI0, 0x0000, 0x0000,78 quirk_usb3_maximum_bandwidth },79 { 0x8087, PCI_DEVICE_ID_INTEL_RPL_NHI1, 0x0000, 0x0000,80 quirk_usb3_maximum_bandwidth },81 { 0x8087, PCI_DEVICE_ID_INTEL_MTL_M_NHI0, 0x0000, 0x0000,82 quirk_usb3_maximum_bandwidth },83 { 0x8087, PCI_DEVICE_ID_INTEL_MTL_P_NHI0, 0x0000, 0x0000,84 quirk_usb3_maximum_bandwidth },85 { 0x8087, PCI_DEVICE_ID_INTEL_MTL_P_NHI1, 0x0000, 0x0000,86 quirk_usb3_maximum_bandwidth },87 { 0x8087, PCI_DEVICE_ID_INTEL_BARLOW_RIDGE_HOST_80G_NHI, 0x0000, 0x0000,88 quirk_usb3_maximum_bandwidth },89 { 0x8087, PCI_DEVICE_ID_INTEL_BARLOW_RIDGE_HOST_40G_NHI, 0x0000, 0x0000,90 quirk_usb3_maximum_bandwidth },91 { 0x8087, PCI_DEVICE_ID_INTEL_BARLOW_RIDGE_HUB_80G_BRIDGE, 0x0000, 0x0000,92 quirk_usb3_maximum_bandwidth },93 { 0x8087, PCI_DEVICE_ID_INTEL_BARLOW_RIDGE_HUB_40G_BRIDGE, 0x0000, 0x0000,94 quirk_usb3_maximum_bandwidth },95 /*96 * Block Runtime PM in DP redrive mode for Intel Barlow Ridge host97 * controllers.98 */99 { 0x8087, PCI_DEVICE_ID_INTEL_BARLOW_RIDGE_HOST_80G_NHI, 0x0000, 0x0000,100 quirk_block_rpm_in_redrive },101 { 0x8087, PCI_DEVICE_ID_INTEL_BARLOW_RIDGE_HOST_40G_NHI, 0x0000, 0x0000,102 quirk_block_rpm_in_redrive },103 /*104 * CLx is not supported on AMD USB4 Yellow Carp and Pink Sardine platforms.105 */106 { 0x0438, 0x0208, 0x0000, 0x0000, quirk_clx_disable },107 { 0x0438, 0x0209, 0x0000, 0x0000, quirk_clx_disable },108 { 0x0438, 0x020a, 0x0000, 0x0000, quirk_clx_disable },109 { 0x0438, 0x020b, 0x0000, 0x0000, quirk_clx_disable },110};111 112/**113 * tb_check_quirks() - Check for quirks to apply114 * @sw: Thunderbolt switch115 *116 * Apply any quirks for the Thunderbolt controller.117 */118void tb_check_quirks(struct tb_switch *sw)119{120 int i;121 122 for (i = 0; i < ARRAY_SIZE(tb_quirks); i++) {123 const struct tb_quirk *q = &tb_quirks[i];124 125 if (q->hw_vendor_id && q->hw_vendor_id != sw->config.vendor_id)126 continue;127 if (q->hw_device_id && q->hw_device_id != sw->config.device_id)128 continue;129 if (q->vendor && q->vendor != sw->vendor)130 continue;131 if (q->device && q->device != sw->device)132 continue;133 134 tb_sw_dbg(sw, "running %ps\n", q->hook);135 q->hook(sw);136 }137}138