projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1cb36293 ML |
1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* | |
| 3 | * Thunderbolt driver - quirks | |
| 4 | * | |
| 5 | * Copyright (c) 2020 Mario Limonciello <mario.limonciello@dell.com> | |
| 6 | */ | |
| 7 | ||
| 8 | #include "tb.h" | |
| 9 | ||
| 10 | static void quirk_force_power_link(struct tb_switch *sw) | |
| 11 | { | |
| 12 | sw->quirks |= QUIRK_FORCE_POWER_LINK_CONTROLLER; | |
| 13 | } | |
| 14 | ||
| 7c37bb30 MW |
15 | static void quirk_dp_credit_allocation(struct tb_switch *sw) |
| 16 | { | |
| 17 | if (sw->credit_allocation && sw->min_dp_main_credits == 56) { | |
| 18 | sw->min_dp_main_credits = 18; | |
| 19 | tb_sw_dbg(sw, "quirked DP main: %u\n", sw->min_dp_main_credits); | |
| 20 | } | |
| 21 | } | |
| 22 | ||
| 7af9da8c SM |
23 | static void quirk_clx_disable(struct tb_switch *sw) |
| 24 | { | |
| 25 | sw->quirks |= QUIRK_NO_CLX; | |
| 26 | tb_sw_dbg(sw, "disabling CL states\n"); | |
| 27 | } | |
| 28 | ||
| f0a57dd3 GF |
29 | static void quirk_usb3_maximum_bandwidth(struct tb_switch *sw) |
| 30 | { | |
| 31 | struct tb_port *port; | |
| 32 | ||
| 33 | tb_switch_for_each_port(sw, port) { | |
| 34 | if (!tb_port_is_usb3_down(port)) | |
| 35 | continue; | |
| 36 | port->max_bw = 16376; | |
| 37 | tb_port_dbg(port, "USB3 maximum bandwidth limited to %u Mb/s\n", | |
| 38 | port->max_bw); | |
| 39 | } | |
| 40 | } | |
| 41 | ||
| 1cb36293 | 42 | struct tb_quirk { |
| 7c37bb30 MW |
43 | u16 hw_vendor_id; |
| 44 | u16 hw_device_id; | |
| 1cb36293 ML |
45 | u16 vendor; |
| 46 | u16 device; | |
| 47 | void (*hook)(struct tb_switch *sw); | |
| 48 | }; | |
| 49 | ||
| ef7e1207 | 50 | static const struct tb_quirk tb_quirks[] = { |
| 1cb36293 | 51 | /* Dell WD19TB supports self-authentication on unplug */ |
| 7c37bb30 MW |
52 | { 0x0000, 0x0000, 0x00d4, 0xb070, quirk_force_power_link }, |
| 53 | { 0x0000, 0x0000, 0x00d4, 0xb071, quirk_force_power_link }, | |
| 54 | /* | |
| 55 | * Intel Goshen Ridge NVM 27 and before report wrong number of | |
| 56 | * DP buffers. | |
| 57 | */ | |
| 58 | { 0x8087, 0x0b26, 0x0000, 0x0000, quirk_dp_credit_allocation }, | |
| f0a57dd3 GF |
59 | /* |
| 60 | * Limit the maximum USB3 bandwidth for the following Intel USB4 | |
| 61 | * host routers due to a hardware issue. | |
| 62 | */ | |
| 63 | { 0x8087, PCI_DEVICE_ID_INTEL_ADL_NHI0, 0x0000, 0x0000, | |
| 64 | quirk_usb3_maximum_bandwidth }, | |
| 65 | { 0x8087, PCI_DEVICE_ID_INTEL_ADL_NHI1, 0x0000, 0x0000, | |
| 66 | quirk_usb3_maximum_bandwidth }, | |
| 67 | { 0x8087, PCI_DEVICE_ID_INTEL_RPL_NHI0, 0x0000, 0x0000, | |
| 68 | quirk_usb3_maximum_bandwidth }, | |
| 69 | { 0x8087, PCI_DEVICE_ID_INTEL_RPL_NHI1, 0x0000, 0x0000, | |
| 70 | quirk_usb3_maximum_bandwidth }, | |
| 71 | { 0x8087, PCI_DEVICE_ID_INTEL_MTL_M_NHI0, 0x0000, 0x0000, | |
| 72 | quirk_usb3_maximum_bandwidth }, | |
| 73 | { 0x8087, PCI_DEVICE_ID_INTEL_MTL_P_NHI0, 0x0000, 0x0000, | |
| 74 | quirk_usb3_maximum_bandwidth }, | |
| 75 | { 0x8087, PCI_DEVICE_ID_INTEL_MTL_P_NHI1, 0x0000, 0x0000, | |
| 76 | quirk_usb3_maximum_bandwidth }, | |
| 7af9da8c SM |
77 | /* |
| 78 | * CLx is not supported on AMD USB4 Yellow Carp and Pink Sardine platforms. | |
| 79 | */ | |
| 80 | { 0x0438, 0x0208, 0x0000, 0x0000, quirk_clx_disable }, | |
| 81 | { 0x0438, 0x0209, 0x0000, 0x0000, quirk_clx_disable }, | |
| 82 | { 0x0438, 0x020a, 0x0000, 0x0000, quirk_clx_disable }, | |
| 83 | { 0x0438, 0x020b, 0x0000, 0x0000, quirk_clx_disable }, | |
| 1cb36293 ML |
84 | }; |
| 85 | ||
| 86 | /** | |
| 87 | * tb_check_quirks() - Check for quirks to apply | |
| 88 | * @sw: Thunderbolt switch | |
| 89 | * | |
| 9c8cac6a | 90 | * Apply any quirks for the Thunderbolt controller. |
| 1cb36293 ML |
91 | */ |
| 92 | void tb_check_quirks(struct tb_switch *sw) | |
| 93 | { | |
| 94 | int i; | |
| 95 | ||
| 96 | for (i = 0; i < ARRAY_SIZE(tb_quirks); i++) { | |
| 97 | const struct tb_quirk *q = &tb_quirks[i]; | |
| 98 | ||
| 7c37bb30 MW |
99 | if (q->hw_vendor_id && q->hw_vendor_id != sw->config.vendor_id) |
| 100 | continue; | |
| 101 | if (q->hw_device_id && q->hw_device_id != sw->config.device_id) | |
| 102 | continue; | |
| 103 | if (q->vendor && q->vendor != sw->vendor) | |
| 104 | continue; | |
| 105 | if (q->device && q->device != sw->device) | |
| 106 | continue; | |
| 107 | ||
| 108 | q->hook(sw); | |
| 1cb36293 ML |
109 | } |
| 110 | } |