Ilia Mirkin | b7019ac | 2019-06-19 20:13:43 -0400 | [diff] [blame] | 1 | // SPDX-License-Identifier: MIT |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 2 | #include <linux/pci.h> |
| 3 | #include <linux/acpi.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 4 | #include <linux/slab.h> |
Dave Airlie | 8116188 | 2010-12-06 12:57:45 +1000 | [diff] [blame] | 5 | #include <linux/mxm-wmi.h> |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 6 | #include <linux/vga_switcheroo.h> |
Linus Torvalds | 612a9aa | 2012-10-03 23:29:23 -0700 | [diff] [blame] | 7 | #include <drm/drm_edid.h> |
Lv Zheng | 8b48463 | 2013-12-03 08:49:16 +0800 | [diff] [blame] | 8 | #include <acpi/video.h> |
Ben Skeggs | c007706 | 2012-07-26 08:51:21 +1000 | [diff] [blame] | 9 | |
Ben Skeggs | 4dc2813 | 2016-05-20 09:22:55 +1000 | [diff] [blame] | 10 | #include "nouveau_drv.h" |
Ben Skeggs | c007706 | 2012-07-26 08:51:21 +1000 | [diff] [blame] | 11 | #include "nouveau_acpi.h" |
| 12 | |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 13 | #define NOUVEAU_DSM_LED 0x02 |
| 14 | #define NOUVEAU_DSM_LED_STATE 0x00 |
| 15 | #define NOUVEAU_DSM_LED_OFF 0x10 |
| 16 | #define NOUVEAU_DSM_LED_STAMINA 0x11 |
| 17 | #define NOUVEAU_DSM_LED_SPEED 0x12 |
| 18 | |
| 19 | #define NOUVEAU_DSM_POWER 0x03 |
| 20 | #define NOUVEAU_DSM_POWER_STATE 0x00 |
| 21 | #define NOUVEAU_DSM_POWER_SPEED 0x01 |
| 22 | #define NOUVEAU_DSM_POWER_STAMINA 0x02 |
| 23 | |
Dave Airlie | 5addcf0 | 2012-09-10 14:20:51 +1000 | [diff] [blame] | 24 | #define NOUVEAU_DSM_OPTIMUS_CAPS 0x1A |
| 25 | #define NOUVEAU_DSM_OPTIMUS_FLAGS 0x1B |
| 26 | |
| 27 | #define NOUVEAU_DSM_OPTIMUS_POWERDOWN_PS3 (3 << 24) |
| 28 | #define NOUVEAU_DSM_OPTIMUS_NO_POWERDOWN_PS3 (2 << 24) |
| 29 | #define NOUVEAU_DSM_OPTIMUS_FLAGS_CHANGED (1) |
| 30 | |
| 31 | #define NOUVEAU_DSM_OPTIMUS_SET_POWERDOWN (NOUVEAU_DSM_OPTIMUS_POWERDOWN_PS3 | NOUVEAU_DSM_OPTIMUS_FLAGS_CHANGED) |
| 32 | |
| 33 | /* result of the optimus caps function */ |
| 34 | #define OPTIMUS_ENABLED (1 << 0) |
| 35 | #define OPTIMUS_STATUS_MASK (3 << 3) |
| 36 | #define OPTIMUS_STATUS_OFF (0 << 3) |
| 37 | #define OPTIMUS_STATUS_ON_ENABLED (1 << 3) |
| 38 | #define OPTIMUS_STATUS_PWR_STABLE (3 << 3) |
| 39 | #define OPTIMUS_DISPLAY_HOTPLUG (1 << 6) |
| 40 | #define OPTIMUS_CAPS_MASK (7 << 24) |
| 41 | #define OPTIMUS_DYNAMIC_PWR_CAP (1 << 24) |
| 42 | |
| 43 | #define OPTIMUS_AUDIO_CAPS_MASK (3 << 27) |
| 44 | #define OPTIMUS_HDA_CODEC_MASK (2 << 27) /* hda bios control */ |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 45 | |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 46 | static struct nouveau_dsm_priv { |
| 47 | bool dsm_detected; |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 48 | bool optimus_detected; |
Peter Wu | cba9780 | 2016-07-15 15:12:17 +0200 | [diff] [blame] | 49 | bool optimus_flags_detected; |
Peter Wu | 692a17d | 2016-07-15 15:12:18 +0200 | [diff] [blame] | 50 | bool optimus_skip_dsm; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 51 | acpi_handle dhandle; |
Dave Airlie | afeb3e1 | 2010-04-07 13:55:09 +1000 | [diff] [blame] | 52 | acpi_handle rom_handle; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 53 | } nouveau_dsm_priv; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 54 | |
Dave Airlie | c839d74 | 2012-11-02 11:04:27 +1000 | [diff] [blame] | 55 | bool nouveau_is_optimus(void) { |
| 56 | return nouveau_dsm_priv.optimus_detected; |
| 57 | } |
| 58 | |
| 59 | bool nouveau_is_v1_dsm(void) { |
| 60 | return nouveau_dsm_priv.dsm_detected; |
| 61 | } |
| 62 | |
Jeff Mahoney | d0ce7b856 | 2014-01-21 14:34:52 -0800 | [diff] [blame] | 63 | #ifdef CONFIG_VGA_SWITCHEROO |
Andy Shevchenko | 94116f8 | 2017-06-05 19:40:46 +0300 | [diff] [blame] | 64 | static const guid_t nouveau_dsm_muid = |
| 65 | GUID_INIT(0x9D95A0A0, 0x0060, 0x4D48, |
| 66 | 0xB3, 0x4D, 0x7E, 0x5F, 0xEA, 0x12, 0x9F, 0xD4); |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 67 | |
Andy Shevchenko | 94116f8 | 2017-06-05 19:40:46 +0300 | [diff] [blame] | 68 | static const guid_t nouveau_op_dsm_muid = |
| 69 | GUID_INIT(0xA486D8F8, 0x0BDA, 0x471B, |
| 70 | 0xA7, 0x2B, 0x60, 0x42, 0xA6, 0xB5, 0xBE, 0xE0); |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 71 | |
| 72 | static int nouveau_optimus_dsm(acpi_handle handle, int func, int arg, uint32_t *result) |
| 73 | { |
Jiang Liu | b072e53 | 2013-12-19 20:38:22 +0800 | [diff] [blame] | 74 | int i; |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 75 | union acpi_object *obj; |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 76 | char args_buff[4]; |
Jiang Liu | b072e53 | 2013-12-19 20:38:22 +0800 | [diff] [blame] | 77 | union acpi_object argv4 = { |
| 78 | .buffer.type = ACPI_TYPE_BUFFER, |
| 79 | .buffer.length = 4, |
| 80 | .buffer.pointer = args_buff |
| 81 | }; |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 82 | |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 83 | /* ACPI is little endian, AABBCCDD becomes {DD,CC,BB,AA} */ |
| 84 | for (i = 0; i < 4; i++) |
| 85 | args_buff[i] = (arg >> i * 8) & 0xFF; |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 86 | |
Jiang Liu | b072e53 | 2013-12-19 20:38:22 +0800 | [diff] [blame] | 87 | *result = 0; |
Andy Shevchenko | 94116f8 | 2017-06-05 19:40:46 +0300 | [diff] [blame] | 88 | obj = acpi_evaluate_dsm_typed(handle, &nouveau_op_dsm_muid, 0x00000100, |
Jiang Liu | b072e53 | 2013-12-19 20:38:22 +0800 | [diff] [blame] | 89 | func, &argv4, ACPI_TYPE_BUFFER); |
| 90 | if (!obj) { |
| 91 | acpi_handle_info(handle, "failed to evaluate _DSM\n"); |
| 92 | return AE_ERROR; |
| 93 | } else { |
| 94 | if (obj->buffer.length == 4) { |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 95 | *result |= obj->buffer.pointer[0]; |
| 96 | *result |= (obj->buffer.pointer[1] << 8); |
| 97 | *result |= (obj->buffer.pointer[2] << 16); |
| 98 | *result |= (obj->buffer.pointer[3] << 24); |
| 99 | } |
Jiang Liu | b072e53 | 2013-12-19 20:38:22 +0800 | [diff] [blame] | 100 | ACPI_FREE(obj); |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 101 | } |
| 102 | |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 103 | return 0; |
| 104 | } |
| 105 | |
Jiang Liu | e284175 | 2014-02-20 17:23:16 +0800 | [diff] [blame] | 106 | /* |
| 107 | * On some platforms, _DSM(nouveau_op_dsm_muid, func0) has special |
| 108 | * requirements on the fourth parameter, so a private implementation |
| 109 | * instead of using acpi_check_dsm(). |
| 110 | */ |
Peter Wu | a12e78d | 2016-07-15 15:12:16 +0200 | [diff] [blame] | 111 | static int nouveau_dsm_get_optimus_functions(acpi_handle handle) |
Jiang Liu | e284175 | 2014-02-20 17:23:16 +0800 | [diff] [blame] | 112 | { |
| 113 | int result; |
| 114 | |
| 115 | /* |
| 116 | * Function 0 returns a Buffer containing available functions. |
| 117 | * The args parameter is ignored for function 0, so just put 0 in it |
| 118 | */ |
| 119 | if (nouveau_optimus_dsm(handle, 0, 0, &result)) |
| 120 | return 0; |
| 121 | |
| 122 | /* |
| 123 | * ACPI Spec v4 9.14.1: if bit 0 is zero, no function is supported. |
| 124 | * If the n-th bit is enabled, function n is supported |
| 125 | */ |
Peter Wu | a12e78d | 2016-07-15 15:12:16 +0200 | [diff] [blame] | 126 | if (result & 1 && result & (1 << NOUVEAU_DSM_OPTIMUS_CAPS)) |
| 127 | return result; |
| 128 | return 0; |
Jiang Liu | e284175 | 2014-02-20 17:23:16 +0800 | [diff] [blame] | 129 | } |
| 130 | |
Jiang Liu | b072e53 | 2013-12-19 20:38:22 +0800 | [diff] [blame] | 131 | static int nouveau_dsm(acpi_handle handle, int func, int arg) |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 132 | { |
Jiang Liu | b072e53 | 2013-12-19 20:38:22 +0800 | [diff] [blame] | 133 | int ret = 0; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 134 | union acpi_object *obj; |
Jiang Liu | b072e53 | 2013-12-19 20:38:22 +0800 | [diff] [blame] | 135 | union acpi_object argv4 = { |
| 136 | .integer.type = ACPI_TYPE_INTEGER, |
| 137 | .integer.value = arg, |
| 138 | }; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 139 | |
Andy Shevchenko | 94116f8 | 2017-06-05 19:40:46 +0300 | [diff] [blame] | 140 | obj = acpi_evaluate_dsm_typed(handle, &nouveau_dsm_muid, 0x00000102, |
Jiang Liu | b072e53 | 2013-12-19 20:38:22 +0800 | [diff] [blame] | 141 | func, &argv4, ACPI_TYPE_INTEGER); |
| 142 | if (!obj) { |
| 143 | acpi_handle_info(handle, "failed to evaluate _DSM\n"); |
| 144 | return AE_ERROR; |
| 145 | } else { |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 146 | if (obj->integer.value == 0x80000002) |
Jiang Liu | b072e53 | 2013-12-19 20:38:22 +0800 | [diff] [blame] | 147 | ret = -ENODEV; |
| 148 | ACPI_FREE(obj); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 149 | } |
| 150 | |
Jiang Liu | b072e53 | 2013-12-19 20:38:22 +0800 | [diff] [blame] | 151 | return ret; |
Peter Lekensteyn | 9075e85 | 2011-12-17 12:53:43 +0100 | [diff] [blame] | 152 | } |
| 153 | |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 154 | static int nouveau_dsm_switch_mux(acpi_handle handle, int mux_id) |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 155 | { |
Dave Airlie | 000703f | 2011-05-09 11:40:25 +1000 | [diff] [blame] | 156 | mxm_wmi_call_mxmx(mux_id == NOUVEAU_DSM_LED_STAMINA ? MXM_MXDS_ADAPTER_IGD : MXM_MXDS_ADAPTER_0); |
Dave Airlie | 8116188 | 2010-12-06 12:57:45 +1000 | [diff] [blame] | 157 | mxm_wmi_call_mxds(mux_id == NOUVEAU_DSM_LED_STAMINA ? MXM_MXDS_ADAPTER_IGD : MXM_MXDS_ADAPTER_0); |
Jiang Liu | b072e53 | 2013-12-19 20:38:22 +0800 | [diff] [blame] | 158 | return nouveau_dsm(handle, NOUVEAU_DSM_LED, mux_id); |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 159 | } |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 160 | |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 161 | static int nouveau_dsm_set_discrete_state(acpi_handle handle, enum vga_switcheroo_state state) |
| 162 | { |
| 163 | int arg; |
| 164 | if (state == VGA_SWITCHEROO_ON) |
| 165 | arg = NOUVEAU_DSM_POWER_SPEED; |
| 166 | else |
| 167 | arg = NOUVEAU_DSM_POWER_STAMINA; |
Jiang Liu | b072e53 | 2013-12-19 20:38:22 +0800 | [diff] [blame] | 168 | nouveau_dsm(handle, NOUVEAU_DSM_POWER, arg); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 169 | return 0; |
| 170 | } |
| 171 | |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 172 | static int nouveau_dsm_switchto(enum vga_switcheroo_client_id id) |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 173 | { |
Dave Airlie | c839d74 | 2012-11-02 11:04:27 +1000 | [diff] [blame] | 174 | if (!nouveau_dsm_priv.dsm_detected) |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 175 | return 0; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 176 | if (id == VGA_SWITCHEROO_IGD) |
Dave Airlie | fc5ea29 | 2010-05-31 17:10:52 +1000 | [diff] [blame] | 177 | return nouveau_dsm_switch_mux(nouveau_dsm_priv.dhandle, NOUVEAU_DSM_LED_STAMINA); |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 178 | else |
Dave Airlie | fc5ea29 | 2010-05-31 17:10:52 +1000 | [diff] [blame] | 179 | return nouveau_dsm_switch_mux(nouveau_dsm_priv.dhandle, NOUVEAU_DSM_LED_SPEED); |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 180 | } |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 181 | |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 182 | static int nouveau_dsm_power_state(enum vga_switcheroo_client_id id, |
| 183 | enum vga_switcheroo_state state) |
| 184 | { |
| 185 | if (id == VGA_SWITCHEROO_IGD) |
| 186 | return 0; |
| 187 | |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 188 | /* Optimus laptops have the card already disabled in |
| 189 | * nouveau_switcheroo_set_state */ |
Dave Airlie | c839d74 | 2012-11-02 11:04:27 +1000 | [diff] [blame] | 190 | if (!nouveau_dsm_priv.dsm_detected) |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 191 | return 0; |
| 192 | |
Dave Airlie | fc5ea29 | 2010-05-31 17:10:52 +1000 | [diff] [blame] | 193 | return nouveau_dsm_set_discrete_state(nouveau_dsm_priv.dhandle, state); |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 194 | } |
| 195 | |
Luc Van Oostenryck | f43cda5 | 2018-04-24 15:15:38 +0200 | [diff] [blame] | 196 | static enum vga_switcheroo_client_id nouveau_dsm_get_client_id(struct pci_dev *pdev) |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 197 | { |
Dave Airlie | d1fbd923 | 2010-12-06 12:56:44 +1000 | [diff] [blame] | 198 | /* easy option one - intel vendor ID means Integrated */ |
| 199 | if (pdev->vendor == PCI_VENDOR_ID_INTEL) |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 200 | return VGA_SWITCHEROO_IGD; |
Dave Airlie | d1fbd923 | 2010-12-06 12:56:44 +1000 | [diff] [blame] | 201 | |
| 202 | /* is this device on Bus 0? - this may need improving */ |
| 203 | if (pdev->bus->number == 0) |
| 204 | return VGA_SWITCHEROO_IGD; |
| 205 | |
| 206 | return VGA_SWITCHEROO_DIS; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 207 | } |
| 208 | |
Lukas Wunner | 5d17013 | 2015-10-18 13:05:40 +0200 | [diff] [blame] | 209 | static const struct vga_switcheroo_handler nouveau_dsm_handler = { |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 210 | .switchto = nouveau_dsm_switchto, |
| 211 | .power_state = nouveau_dsm_power_state, |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 212 | .get_client_id = nouveau_dsm_get_client_id, |
| 213 | }; |
| 214 | |
Peter Wu | 692a17d | 2016-07-15 15:12:18 +0200 | [diff] [blame] | 215 | /* |
| 216 | * Firmware supporting Windows 8 or later do not use _DSM to put the device into |
| 217 | * D3cold, they instead rely on disabling power resources on the parent. |
| 218 | */ |
| 219 | static bool nouveau_pr3_present(struct pci_dev *pdev) |
| 220 | { |
| 221 | struct pci_dev *parent_pdev = pci_upstream_bridge(pdev); |
| 222 | struct acpi_device *parent_adev; |
| 223 | |
| 224 | if (!parent_pdev) |
| 225 | return false; |
| 226 | |
Peter Wu | 279cf3f | 2016-08-26 01:00:54 +0200 | [diff] [blame] | 227 | if (!parent_pdev->bridge_d3) { |
| 228 | /* |
| 229 | * Parent PCI bridge is currently not power managed. |
| 230 | * Since userspace can change these afterwards to be on |
| 231 | * the safe side we stick with _DSM and prevent usage of |
| 232 | * _PR3 from the bridge. |
| 233 | */ |
| 234 | pci_d3cold_disable(pdev); |
| 235 | return false; |
| 236 | } |
| 237 | |
Peter Wu | 692a17d | 2016-07-15 15:12:18 +0200 | [diff] [blame] | 238 | parent_adev = ACPI_COMPANION(&parent_pdev->dev); |
| 239 | if (!parent_adev) |
| 240 | return false; |
| 241 | |
Peter Wu | b0a6af8 | 2016-10-31 23:48:22 +0100 | [diff] [blame] | 242 | return parent_adev->power.flags.power_resources && |
| 243 | acpi_has_method(parent_adev->handle, "_PR3"); |
Peter Wu | 692a17d | 2016-07-15 15:12:18 +0200 | [diff] [blame] | 244 | } |
| 245 | |
Peter Wu | df42194 | 2016-07-15 15:12:15 +0200 | [diff] [blame] | 246 | static void nouveau_dsm_pci_probe(struct pci_dev *pdev, acpi_handle *dhandle_out, |
Peter Wu | cba9780 | 2016-07-15 15:12:17 +0200 | [diff] [blame] | 247 | bool *has_mux, bool *has_opt, |
Peter Wu | 692a17d | 2016-07-15 15:12:18 +0200 | [diff] [blame] | 248 | bool *has_opt_flags, bool *has_pr3) |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 249 | { |
Zhang Rui | 187b5b5 | 2013-09-03 08:32:00 +0800 | [diff] [blame] | 250 | acpi_handle dhandle; |
Peter Wu | df42194 | 2016-07-15 15:12:15 +0200 | [diff] [blame] | 251 | bool supports_mux; |
Peter Wu | a12e78d | 2016-07-15 15:12:16 +0200 | [diff] [blame] | 252 | int optimus_funcs; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 253 | |
Rafael J. Wysocki | 3a83f99 | 2013-11-14 23:17:21 +0100 | [diff] [blame] | 254 | dhandle = ACPI_HANDLE(&pdev->dev); |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 255 | if (!dhandle) |
Peter Wu | df42194 | 2016-07-15 15:12:15 +0200 | [diff] [blame] | 256 | return; |
Dave Airlie | afeb3e1 | 2010-04-07 13:55:09 +1000 | [diff] [blame] | 257 | |
Bjorn Helgaas | f91ce35 | 2014-09-10 15:30:08 -0600 | [diff] [blame] | 258 | if (!acpi_has_method(dhandle, "_DSM")) |
Peter Wu | df42194 | 2016-07-15 15:12:15 +0200 | [diff] [blame] | 259 | return; |
Bjorn Helgaas | f91ce35 | 2014-09-10 15:30:08 -0600 | [diff] [blame] | 260 | |
Andy Shevchenko | 94116f8 | 2017-06-05 19:40:46 +0300 | [diff] [blame] | 261 | supports_mux = acpi_check_dsm(dhandle, &nouveau_dsm_muid, 0x00000102, |
Peter Wu | df42194 | 2016-07-15 15:12:15 +0200 | [diff] [blame] | 262 | 1 << NOUVEAU_DSM_POWER); |
Peter Wu | a12e78d | 2016-07-15 15:12:16 +0200 | [diff] [blame] | 263 | optimus_funcs = nouveau_dsm_get_optimus_functions(dhandle); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 264 | |
Peter Wu | df42194 | 2016-07-15 15:12:15 +0200 | [diff] [blame] | 265 | /* Does not look like a Nvidia device. */ |
Peter Wu | a12e78d | 2016-07-15 15:12:16 +0200 | [diff] [blame] | 266 | if (!supports_mux && !optimus_funcs) |
Peter Wu | df42194 | 2016-07-15 15:12:15 +0200 | [diff] [blame] | 267 | return; |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 268 | |
Peter Wu | df42194 | 2016-07-15 15:12:15 +0200 | [diff] [blame] | 269 | *dhandle_out = dhandle; |
| 270 | *has_mux = supports_mux; |
Peter Wu | a12e78d | 2016-07-15 15:12:16 +0200 | [diff] [blame] | 271 | *has_opt = !!optimus_funcs; |
Peter Wu | cba9780 | 2016-07-15 15:12:17 +0200 | [diff] [blame] | 272 | *has_opt_flags = optimus_funcs & (1 << NOUVEAU_DSM_OPTIMUS_FLAGS); |
Peter Wu | 692a17d | 2016-07-15 15:12:18 +0200 | [diff] [blame] | 273 | *has_pr3 = false; |
Peter Wu | df42194 | 2016-07-15 15:12:15 +0200 | [diff] [blame] | 274 | |
Peter Wu | a12e78d | 2016-07-15 15:12:16 +0200 | [diff] [blame] | 275 | if (optimus_funcs) { |
Dave Airlie | 5addcf0 | 2012-09-10 14:20:51 +1000 | [diff] [blame] | 276 | uint32_t result; |
| 277 | nouveau_optimus_dsm(dhandle, NOUVEAU_DSM_OPTIMUS_CAPS, 0, |
| 278 | &result); |
| 279 | dev_info(&pdev->dev, "optimus capabilities: %s, status %s%s\n", |
| 280 | (result & OPTIMUS_ENABLED) ? "enabled" : "disabled", |
| 281 | (result & OPTIMUS_DYNAMIC_PWR_CAP) ? "dynamic power, " : "", |
| 282 | (result & OPTIMUS_HDA_CODEC_MASK) ? "hda bios codec supported" : ""); |
Peter Wu | 692a17d | 2016-07-15 15:12:18 +0200 | [diff] [blame] | 283 | |
| 284 | *has_pr3 = nouveau_pr3_present(pdev); |
Dave Airlie | 5addcf0 | 2012-09-10 14:20:51 +1000 | [diff] [blame] | 285 | } |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 286 | } |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 287 | |
| 288 | static bool nouveau_dsm_detect(void) |
| 289 | { |
| 290 | char acpi_method_name[255] = { 0 }; |
| 291 | struct acpi_buffer buffer = {sizeof(acpi_method_name), acpi_method_name}; |
| 292 | struct pci_dev *pdev = NULL; |
Peter Wu | df42194 | 2016-07-15 15:12:15 +0200 | [diff] [blame] | 293 | acpi_handle dhandle = NULL; |
| 294 | bool has_mux = false; |
| 295 | bool has_optimus = false; |
Peter Wu | cba9780 | 2016-07-15 15:12:17 +0200 | [diff] [blame] | 296 | bool has_optimus_flags = false; |
Peter Wu | 692a17d | 2016-07-15 15:12:18 +0200 | [diff] [blame] | 297 | bool has_power_resources = false; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 298 | int vga_count = 0; |
Dave Airlie | 8116188 | 2010-12-06 12:57:45 +1000 | [diff] [blame] | 299 | bool guid_valid; |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 300 | bool ret = false; |
Dave Airlie | 8116188 | 2010-12-06 12:57:45 +1000 | [diff] [blame] | 301 | |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 302 | /* lookup the MXM GUID */ |
Dave Airlie | 8116188 | 2010-12-06 12:57:45 +1000 | [diff] [blame] | 303 | guid_valid = mxm_wmi_supported(); |
Dave Airlie | 8116188 | 2010-12-06 12:57:45 +1000 | [diff] [blame] | 304 | |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 305 | if (guid_valid) |
| 306 | printk("MXM: GUID detected in BIOS\n"); |
Dave Airlie | afeb3e1 | 2010-04-07 13:55:09 +1000 | [diff] [blame] | 307 | |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 308 | /* now do DSM detection */ |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 309 | while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) { |
| 310 | vga_count++; |
| 311 | |
Peter Wu | cba9780 | 2016-07-15 15:12:17 +0200 | [diff] [blame] | 312 | nouveau_dsm_pci_probe(pdev, &dhandle, &has_mux, &has_optimus, |
Peter Wu | 692a17d | 2016-07-15 15:12:18 +0200 | [diff] [blame] | 313 | &has_optimus_flags, &has_power_resources); |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 314 | } |
| 315 | |
Emil Velikov | 4c60fac | 2013-10-09 08:25:16 +0100 | [diff] [blame] | 316 | while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_3D << 8, pdev)) != NULL) { |
| 317 | vga_count++; |
| 318 | |
Peter Wu | cba9780 | 2016-07-15 15:12:17 +0200 | [diff] [blame] | 319 | nouveau_dsm_pci_probe(pdev, &dhandle, &has_mux, &has_optimus, |
Peter Wu | 692a17d | 2016-07-15 15:12:18 +0200 | [diff] [blame] | 320 | &has_optimus_flags, &has_power_resources); |
Emil Velikov | 4c60fac | 2013-10-09 08:25:16 +0100 | [diff] [blame] | 321 | } |
| 322 | |
Dave Airlie | c839d74 | 2012-11-02 11:04:27 +1000 | [diff] [blame] | 323 | /* find the optimus DSM or the old v1 DSM */ |
Peter Wu | df42194 | 2016-07-15 15:12:15 +0200 | [diff] [blame] | 324 | if (has_optimus) { |
| 325 | nouveau_dsm_priv.dhandle = dhandle; |
Dave Airlie | c839d74 | 2012-11-02 11:04:27 +1000 | [diff] [blame] | 326 | acpi_get_name(nouveau_dsm_priv.dhandle, ACPI_FULL_PATHNAME, |
| 327 | &buffer); |
Joe Perches | 8dfe162 | 2017-02-28 04:55:54 -0800 | [diff] [blame] | 328 | pr_info("VGA switcheroo: detected Optimus DSM method %s handle\n", |
Dave Airlie | c839d74 | 2012-11-02 11:04:27 +1000 | [diff] [blame] | 329 | acpi_method_name); |
Peter Wu | 692a17d | 2016-07-15 15:12:18 +0200 | [diff] [blame] | 330 | if (has_power_resources) |
| 331 | pr_info("nouveau: detected PR support, will not use DSM\n"); |
Dave Airlie | c839d74 | 2012-11-02 11:04:27 +1000 | [diff] [blame] | 332 | nouveau_dsm_priv.optimus_detected = true; |
Peter Wu | cba9780 | 2016-07-15 15:12:17 +0200 | [diff] [blame] | 333 | nouveau_dsm_priv.optimus_flags_detected = has_optimus_flags; |
Peter Wu | 692a17d | 2016-07-15 15:12:18 +0200 | [diff] [blame] | 334 | nouveau_dsm_priv.optimus_skip_dsm = has_power_resources; |
Dave Airlie | c839d74 | 2012-11-02 11:04:27 +1000 | [diff] [blame] | 335 | ret = true; |
Peter Wu | df42194 | 2016-07-15 15:12:15 +0200 | [diff] [blame] | 336 | } else if (vga_count == 2 && has_mux && guid_valid) { |
| 337 | nouveau_dsm_priv.dhandle = dhandle; |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 338 | acpi_get_name(nouveau_dsm_priv.dhandle, ACPI_FULL_PATHNAME, |
| 339 | &buffer); |
Joe Perches | 8dfe162 | 2017-02-28 04:55:54 -0800 | [diff] [blame] | 340 | pr_info("VGA switcheroo: detected DSM switching method %s handle\n", |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 341 | acpi_method_name); |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 342 | nouveau_dsm_priv.dsm_detected = true; |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 343 | ret = true; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 344 | } |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 345 | |
Dave Airlie | f19467c | 2011-03-22 14:10:27 +1000 | [diff] [blame] | 346 | |
| 347 | return ret; |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 348 | } |
| 349 | |
| 350 | void nouveau_register_dsm_handler(void) |
| 351 | { |
| 352 | bool r; |
| 353 | |
| 354 | r = nouveau_dsm_detect(); |
| 355 | if (!r) |
| 356 | return; |
| 357 | |
Lukas Wunner | 156d7d4 | 2016-01-11 20:09:20 +0100 | [diff] [blame] | 358 | vga_switcheroo_register_handler(&nouveau_dsm_handler, 0); |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 359 | } |
| 360 | |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 361 | /* Must be called for Optimus models before the card can be turned off */ |
| 362 | void nouveau_switcheroo_optimus_dsm(void) |
| 363 | { |
| 364 | u32 result = 0; |
Peter Wu | 692a17d | 2016-07-15 15:12:18 +0200 | [diff] [blame] | 365 | if (!nouveau_dsm_priv.optimus_detected || nouveau_dsm_priv.optimus_skip_dsm) |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 366 | return; |
| 367 | |
Peter Wu | cba9780 | 2016-07-15 15:12:17 +0200 | [diff] [blame] | 368 | if (nouveau_dsm_priv.optimus_flags_detected) |
| 369 | nouveau_optimus_dsm(nouveau_dsm_priv.dhandle, NOUVEAU_DSM_OPTIMUS_FLAGS, |
| 370 | 0x3, &result); |
Dave Airlie | 5addcf0 | 2012-09-10 14:20:51 +1000 | [diff] [blame] | 371 | |
| 372 | nouveau_optimus_dsm(nouveau_dsm_priv.dhandle, NOUVEAU_DSM_OPTIMUS_CAPS, |
| 373 | NOUVEAU_DSM_OPTIMUS_SET_POWERDOWN, &result); |
| 374 | |
Peter Lekensteyn | d099230 | 2011-12-17 12:54:04 +0100 | [diff] [blame] | 375 | } |
| 376 | |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 377 | void nouveau_unregister_dsm_handler(void) |
| 378 | { |
Andreas Heider | 2f3787a | 2012-05-21 00:14:50 +0100 | [diff] [blame] | 379 | if (nouveau_dsm_priv.optimus_detected || nouveau_dsm_priv.dsm_detected) |
| 380 | vga_switcheroo_unregister_handler(); |
Dave Airlie | 6a9ee8a | 2010-02-01 15:38:10 +1000 | [diff] [blame] | 381 | } |
Jeff Mahoney | d0ce7b856 | 2014-01-21 14:34:52 -0800 | [diff] [blame] | 382 | #else |
| 383 | void nouveau_register_dsm_handler(void) {} |
| 384 | void nouveau_unregister_dsm_handler(void) {} |
| 385 | void nouveau_switcheroo_optimus_dsm(void) {} |
| 386 | #endif |
Dave Airlie | afeb3e1 | 2010-04-07 13:55:09 +1000 | [diff] [blame] | 387 | |
| 388 | /* retrieve the ROM in 4k blocks */ |
| 389 | static int nouveau_rom_call(acpi_handle rom_handle, uint8_t *bios, |
| 390 | int offset, int len) |
| 391 | { |
| 392 | acpi_status status; |
| 393 | union acpi_object rom_arg_elements[2], *obj; |
| 394 | struct acpi_object_list rom_arg; |
| 395 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL}; |
| 396 | |
| 397 | rom_arg.count = 2; |
| 398 | rom_arg.pointer = &rom_arg_elements[0]; |
| 399 | |
| 400 | rom_arg_elements[0].type = ACPI_TYPE_INTEGER; |
| 401 | rom_arg_elements[0].integer.value = offset; |
| 402 | |
| 403 | rom_arg_elements[1].type = ACPI_TYPE_INTEGER; |
| 404 | rom_arg_elements[1].integer.value = len; |
| 405 | |
| 406 | status = acpi_evaluate_object(rom_handle, NULL, &rom_arg, &buffer); |
| 407 | if (ACPI_FAILURE(status)) { |
Joe Perches | 8dfe162 | 2017-02-28 04:55:54 -0800 | [diff] [blame] | 408 | pr_info("failed to evaluate ROM got %s\n", |
| 409 | acpi_format_exception(status)); |
Dave Airlie | afeb3e1 | 2010-04-07 13:55:09 +1000 | [diff] [blame] | 410 | return -ENODEV; |
| 411 | } |
| 412 | obj = (union acpi_object *)buffer.pointer; |
Ben Skeggs | 9543294 | 2015-11-19 13:18:34 +1000 | [diff] [blame] | 413 | len = min(len, (int)obj->buffer.length); |
Dave Airlie | afeb3e1 | 2010-04-07 13:55:09 +1000 | [diff] [blame] | 414 | memcpy(bios+offset, obj->buffer.pointer, len); |
| 415 | kfree(buffer.pointer); |
| 416 | return len; |
| 417 | } |
| 418 | |
Ben Skeggs | 26c9e8e | 2015-08-20 14:54:23 +1000 | [diff] [blame] | 419 | bool nouveau_acpi_rom_supported(struct device *dev) |
Dave Airlie | afeb3e1 | 2010-04-07 13:55:09 +1000 | [diff] [blame] | 420 | { |
| 421 | acpi_status status; |
| 422 | acpi_handle dhandle, rom_handle; |
| 423 | |
Ben Skeggs | 26c9e8e | 2015-08-20 14:54:23 +1000 | [diff] [blame] | 424 | dhandle = ACPI_HANDLE(dev); |
Dave Airlie | afeb3e1 | 2010-04-07 13:55:09 +1000 | [diff] [blame] | 425 | if (!dhandle) |
| 426 | return false; |
| 427 | |
| 428 | status = acpi_get_handle(dhandle, "_ROM", &rom_handle); |
| 429 | if (ACPI_FAILURE(status)) |
| 430 | return false; |
| 431 | |
| 432 | nouveau_dsm_priv.rom_handle = rom_handle; |
| 433 | return true; |
| 434 | } |
| 435 | |
| 436 | int nouveau_acpi_get_bios_chunk(uint8_t *bios, int offset, int len) |
| 437 | { |
| 438 | return nouveau_rom_call(nouveau_dsm_priv.rom_handle, bios, offset, len); |
| 439 | } |
Ben Skeggs | a6ed76d | 2010-07-12 15:33:07 +1000 | [diff] [blame] | 440 | |
Ben Skeggs | c007706 | 2012-07-26 08:51:21 +1000 | [diff] [blame] | 441 | void * |
Ben Skeggs | a6ed76d | 2010-07-12 15:33:07 +1000 | [diff] [blame] | 442 | nouveau_acpi_edid(struct drm_device *dev, struct drm_connector *connector) |
| 443 | { |
Ben Skeggs | a6ed76d | 2010-07-12 15:33:07 +1000 | [diff] [blame] | 444 | struct acpi_device *acpidev; |
| 445 | acpi_handle handle; |
| 446 | int type, ret; |
| 447 | void *edid; |
| 448 | |
| 449 | switch (connector->connector_type) { |
| 450 | case DRM_MODE_CONNECTOR_LVDS: |
| 451 | case DRM_MODE_CONNECTOR_eDP: |
| 452 | type = ACPI_VIDEO_DISPLAY_LCD; |
| 453 | break; |
| 454 | default: |
Ben Skeggs | c007706 | 2012-07-26 08:51:21 +1000 | [diff] [blame] | 455 | return NULL; |
Ben Skeggs | a6ed76d | 2010-07-12 15:33:07 +1000 | [diff] [blame] | 456 | } |
| 457 | |
Rafael J. Wysocki | 3a83f99 | 2013-11-14 23:17:21 +0100 | [diff] [blame] | 458 | handle = ACPI_HANDLE(&dev->pdev->dev); |
Ben Skeggs | a6ed76d | 2010-07-12 15:33:07 +1000 | [diff] [blame] | 459 | if (!handle) |
Ben Skeggs | c007706 | 2012-07-26 08:51:21 +1000 | [diff] [blame] | 460 | return NULL; |
Ben Skeggs | a6ed76d | 2010-07-12 15:33:07 +1000 | [diff] [blame] | 461 | |
| 462 | ret = acpi_bus_get_device(handle, &acpidev); |
| 463 | if (ret) |
Ben Skeggs | c007706 | 2012-07-26 08:51:21 +1000 | [diff] [blame] | 464 | return NULL; |
Ben Skeggs | a6ed76d | 2010-07-12 15:33:07 +1000 | [diff] [blame] | 465 | |
| 466 | ret = acpi_video_get_edid(acpidev, type, -1, &edid); |
| 467 | if (ret < 0) |
Ben Skeggs | c007706 | 2012-07-26 08:51:21 +1000 | [diff] [blame] | 468 | return NULL; |
Ben Skeggs | a6ed76d | 2010-07-12 15:33:07 +1000 | [diff] [blame] | 469 | |
Ben Skeggs | c007706 | 2012-07-26 08:51:21 +1000 | [diff] [blame] | 470 | return kmemdup(edid, EDID_LENGTH, GFP_KERNEL); |
Ben Skeggs | a6ed76d | 2010-07-12 15:33:07 +1000 | [diff] [blame] | 471 | } |