Angel Pons | 70c6185 | 2022-05-06 23:17:39 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 2 | |
| 3 | #include <console/console.h> |
| 4 | #include <delay.h> |
| 5 | #include <device/mmio.h> |
| 6 | #include <device/pci_def.h> |
| 7 | #include <device/pci_ops.h> |
| 8 | #include <northbridge/intel/haswell/haswell.h> |
| 9 | #include <northbridge/intel/haswell/raminit.h> |
| 10 | #include <southbridge/intel/lynxpoint/iobp.h> |
| 11 | #include <southbridge/intel/lynxpoint/pch.h> |
| 12 | #include <timer.h> |
| 13 | #include <types.h> |
| 14 | |
| 15 | static unsigned int is_usbr_enabled(void) |
| 16 | { |
| 17 | return !!(pci_read_config32(PCH_XHCI_DEV, XHCI_USB3FUS) & BIT(5)); |
| 18 | } |
| 19 | |
| 20 | static char *const xhci_bar = (char *)PCH_XHCI_TEMP_BAR0; |
| 21 | |
| 22 | static void ehci_hcs_init(const pci_devfn_t dev, const uintptr_t ehci_bar) |
| 23 | { |
| 24 | pci_write_config32(dev, PCI_BASE_ADDRESS_0, ehci_bar); |
| 25 | |
| 26 | /** FIXME: Determine whether Bus Master is required (or clean it up afterwards) **/ |
| 27 | pci_or_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY); |
| 28 | |
| 29 | char *const mem_bar = (char *)ehci_bar; |
| 30 | |
| 31 | /** |
| 32 | * Shared EHCI/XHCI ports w/a. |
| 33 | * This step is required when some of the ports are routed to EHCI |
| 34 | * and other ports are routed XHCI at the same time. |
| 35 | * |
| 36 | * FIXME: Under which conditions should this be done? |
| 37 | */ |
| 38 | pci_and_config16(dev, 0x78, ~0x03); |
| 39 | |
| 40 | /* Skip reset if usbdebug is enabled */ |
| 41 | if (!CONFIG(USBDEBUG_IN_PRE_RAM)) |
| 42 | setbits32(mem_bar + EHCI_USB_CMD, EHCI_USB_CMD_HCRESET); |
| 43 | |
| 44 | /* 2: Configure number of controllers and ports */ |
| 45 | pci_or_config16(dev, EHCI_ACCESS_CNTL, ACCESS_CNTL_ENABLE); |
| 46 | clrsetbits32(mem_bar + EHCI_HCS_PARAMS, 0xf << 12, 0); |
| 47 | clrsetbits32(mem_bar + EHCI_HCS_PARAMS, 0xf << 0, 2 + is_usbr_enabled()); |
| 48 | pci_and_config16(dev, EHCI_ACCESS_CNTL, ~ACCESS_CNTL_ENABLE); |
| 49 | |
| 50 | pci_or_config16(dev, 0x78, BIT(2)); |
| 51 | pci_or_config16(dev, 0x7c, BIT(14) | BIT(7)); |
| 52 | pci_update_config32(dev, 0x8c, ~(0xf << 8), (4 << 8)); |
| 53 | pci_update_config32(dev, 0x8c, ~BIT(26), BIT(17)); |
| 54 | } |
| 55 | |
| 56 | static inline unsigned int physical_port_count(void) |
| 57 | { |
| 58 | return MAX_USB2_PORTS; |
| 59 | } |
| 60 | |
| 61 | static unsigned int hs_port_count(void) |
| 62 | { |
| 63 | /** TODO: Apparently, WPT-LP has 10 USB2 ports **/ |
| 64 | if (CONFIG(INTEL_LYNXPOINT_LP)) |
| 65 | return 8; |
| 66 | |
| 67 | switch ((pci_read_config32(PCH_XHCI_DEV, XHCI_USB3FUS) >> 1) & 3) { |
| 68 | case 3: |
| 69 | return 8; |
| 70 | case 2: |
| 71 | return 10; |
| 72 | case 1: |
| 73 | return 12; |
| 74 | case 0: |
| 75 | default: |
| 76 | return 14; |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | static unsigned int ss_port_count(void) |
| 81 | { |
| 82 | if (CONFIG(INTEL_LYNXPOINT_LP)) |
| 83 | return 4; |
| 84 | |
| 85 | switch ((pci_read_config32(PCH_XHCI_DEV, XHCI_USB3FUS) >> 3) & 3) { |
| 86 | case 3: |
| 87 | return 0; |
| 88 | case 2: |
| 89 | return 2; |
| 90 | case 1: |
| 91 | return 4; |
| 92 | case 0: |
| 93 | default: |
| 94 | return 6; |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | static void common_ehci_hcs_init(void) |
| 99 | { |
| 100 | const bool is_lp = CONFIG(INTEL_LYNXPOINT_LP); |
| 101 | |
| 102 | ehci_hcs_init(PCH_EHCI1_DEV, PCH_EHCI1_TEMP_BAR0); |
| 103 | if (!is_lp) |
| 104 | ehci_hcs_init(PCH_EHCI2_DEV, PCH_EHCI2_TEMP_BAR0); |
| 105 | |
| 106 | pch_iobp_update(0xe5007f04, 0, 0x00004481); |
| 107 | |
| 108 | for (unsigned int port = 0; port < physical_port_count(); port++) |
| 109 | pch_iobp_update(0xe500400f + port * 0x100, ~(1 << 0), 0 << 0); |
| 110 | |
| 111 | pch_iobp_update(0xe5007f14, ~(3 << 19), (3 << 19)); |
| 112 | |
| 113 | if (is_lp) |
| 114 | pch_iobp_update(0xe5007f02, ~(3 << 22), (0 << 22)); |
| 115 | } |
| 116 | |
| 117 | static void xhci_open_memory_space(void) |
| 118 | { |
| 119 | /** FIXME: Determine whether Bus Master is required (or clean it up afterwards) **/ |
| 120 | pci_write_config32(PCH_XHCI_DEV, PCI_BASE_ADDRESS_0, (uintptr_t)xhci_bar); |
| 121 | pci_or_config16(PCH_XHCI_DEV, PCI_COMMAND, PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY); |
| 122 | } |
| 123 | |
| 124 | static void xhci_close_memory_space(void) |
| 125 | { |
| 126 | pci_and_config16(PCH_XHCI_DEV, PCI_COMMAND, ~(PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY)); |
| 127 | pci_write_config32(PCH_XHCI_DEV, PCI_BASE_ADDRESS_0, 0); |
| 128 | } |
| 129 | |
| 130 | static void common_xhci_hc_init(void) |
| 131 | { |
| 132 | const bool is_lp = CONFIG(INTEL_LYNXPOINT_LP); |
| 133 | |
| 134 | if (!is_lp) { |
| 135 | const unsigned int max_ports = 15 + ss_port_count(); |
| 136 | clrsetbits32(xhci_bar + XHCI_HCS_PARAMS_1, 0xf << 28, max_ports << 28); |
| 137 | } |
| 138 | |
| 139 | clrsetbits32(xhci_bar + XHCI_HCS_PARAMS_3, 0xffff << 16 | 0xff, 0x200 << 16 | 0x0a); |
| 140 | clrsetbits32(xhci_bar + XHCI_HCC_PARAMS, BIT(5), BIT(10) | BIT(9)); |
| 141 | |
| 142 | if (!is_lp) |
| 143 | clrsetbits32(xhci_bar + 0x8008, BIT(19), 0); |
| 144 | |
| 145 | if (is_lp) |
| 146 | clrsetbits32(xhci_bar + 0x8058, BIT(8), BIT(16)); |
| 147 | else |
| 148 | clrsetbits32(xhci_bar + 0x8058, BIT(8), BIT(16) | BIT(20)); |
| 149 | |
| 150 | clrsetbits32(xhci_bar + 0x8060, 0, BIT(25) | BIT(18)); |
| 151 | clrsetbits32(xhci_bar + 0x8090, 0, BIT(14) | BIT(8)); |
| 152 | clrsetbits32(xhci_bar + 0x8094, 0, BIT(23) | BIT(21) | BIT(14)); |
| 153 | clrsetbits32(xhci_bar + 0x80e0, BIT(16), BIT(6)); |
| 154 | clrsetbits32(xhci_bar + 0x80ec, (7 << 12) | (7 << 9), (0 << 12) | (6 << 9)); |
| 155 | clrsetbits32(xhci_bar + 0x80f0, BIT(20), 0); |
| 156 | |
| 157 | if (is_lp) |
| 158 | clrsetbits32(xhci_bar + 0x80fc, 0, BIT(25)); |
| 159 | |
| 160 | if (is_lp) |
| 161 | clrsetbits32(xhci_bar + 0x8110, BIT(8) | BIT(2), BIT(20) | BIT(11)); |
| 162 | else |
| 163 | clrsetbits32(xhci_bar + 0x8110, BIT(2), BIT(20) | BIT(11)); |
| 164 | |
| 165 | if (is_lp) |
| 166 | write32(xhci_bar + 0x8140, 0xff00f03c); |
| 167 | else |
| 168 | write32(xhci_bar + 0x8140, 0xff03c132); |
| 169 | |
| 170 | if (is_lp) |
| 171 | clrsetbits32(xhci_bar + 0x8154, BIT(21), BIT(13)); |
| 172 | else |
| 173 | clrsetbits32(xhci_bar + 0x8154, BIT(21) | BIT(13), 0); |
| 174 | |
| 175 | clrsetbits32(xhci_bar + 0x8154, BIT(3), 0); |
| 176 | |
| 177 | if (is_lp) { |
| 178 | clrsetbits32(xhci_bar + 0x8164, 0, BIT(1) | BIT(0)); |
| 179 | write32(xhci_bar + 0x8174, 0x01400c0a); |
| 180 | write32(xhci_bar + 0x817c, 0x033200a3); |
| 181 | write32(xhci_bar + 0x8180, 0x00cb0028); |
| 182 | write32(xhci_bar + 0x8184, 0x0064001e); |
| 183 | } |
| 184 | |
| 185 | /* |
| 186 | * Note: Register at offset 0x44 is 32-bit, but bit 31 is write-once. |
| 187 | * We use these weird partial accesses here to avoid locking bit 31. |
| 188 | */ |
| 189 | pci_or_config16(PCH_XHCI_DEV, 0x44, BIT(15) | BIT(14) | BIT(10) | BIT(0)); |
| 190 | pci_or_config8(PCH_XHCI_DEV, 0x44 + 2, 0x0f); |
| 191 | |
| 192 | /* LPT-LP >= B0 */ |
| 193 | if (is_lp) |
| 194 | clrsetbits32(xhci_bar + 0x8188, 0, BIT(26) | BIT(24)); |
| 195 | |
| 196 | /* LPT-H >= C0 */ |
| 197 | if (!is_lp) |
| 198 | clrsetbits32(xhci_bar + 0x8188, 0, BIT(24)); |
| 199 | } |
| 200 | |
| 201 | static inline bool is_mem_sr(void) |
| 202 | { |
| 203 | return pci_read_config16(PCH_LPC_DEV, GEN_PMCON_2) & GEN_PMCON_2_MEM_SR; |
| 204 | } |
| 205 | |
| 206 | static bool should_restore_xhci_smart_auto(void) |
| 207 | { |
| 208 | if (!is_mem_sr()) |
| 209 | return false; |
| 210 | |
| 211 | return pci_read_config32(PCH_LPC_DEV, PMIR) & PMIR_XHCI_SMART_AUTO; |
| 212 | } |
| 213 | |
| 214 | enum usb_port_route { |
| 215 | ROUTE_TO_EHCI, |
| 216 | ROUTE_TO_XHCI, |
| 217 | }; |
| 218 | |
| 219 | /* Returns whether port reset was successful */ |
| 220 | static bool reset_usb2_ports(const unsigned int ehci_ports) |
| 221 | { |
| 222 | for (unsigned int port = 0; port < ehci_ports; port++) { |
| 223 | /* Initiate port reset for all USB2 ports */ |
| 224 | clrsetbits32( |
| 225 | xhci_bar + XHCI_USB2_PORTSC(port), |
| 226 | XHCI_USB2_PORTSC_PED, |
| 227 | XHCI_USB2_PORTSC_PR); |
| 228 | } |
| 229 | /* Poll for port reset bit to be cleared or time out at 100ms */ |
| 230 | struct stopwatch timer; |
| 231 | stopwatch_init_msecs_expire(&timer, 100); |
| 232 | uint32_t reg32; |
| 233 | do { |
| 234 | reg32 = 0; |
| 235 | for (unsigned int port = 0; port < ehci_ports; port++) |
| 236 | reg32 |= read32(xhci_bar + XHCI_USB2_PORTSC(port)); |
| 237 | |
| 238 | reg32 &= XHCI_USB2_PORTSC_PR; |
| 239 | if (!reg32) { |
| 240 | const long elapsed_time = stopwatch_duration_usecs(&timer); |
| 241 | printk(BIOS_DEBUG, "%s: took %lu usecs\n", __func__, elapsed_time); |
| 242 | return true; |
| 243 | } |
| 244 | /* Reference code has a 10 ms delay here, but a smaller delay works too */ |
| 245 | udelay(100); |
| 246 | } while (!stopwatch_expired(&timer)); |
| 247 | printk(BIOS_ERR, "%s: timed out\n", __func__); |
| 248 | return !reg32; |
| 249 | } |
| 250 | |
| 251 | /* Returns whether warm reset was successful */ |
| 252 | static bool warm_reset_usb3_ports(const unsigned int xhci_ports) |
| 253 | { |
| 254 | for (unsigned int port = 0; port < xhci_ports; port++) { |
| 255 | /* Initiate warm reset for all USB3 ports */ |
| 256 | clrsetbits32( |
| 257 | xhci_bar + XHCI_USB3_PORTSC(port), |
| 258 | XHCI_USB3_PORTSC_PED, |
| 259 | XHCI_USB3_PORTSC_WPR); |
| 260 | } |
| 261 | /* Poll for port reset bit to be cleared or time out at 100ms */ |
| 262 | struct stopwatch timer; |
| 263 | stopwatch_init_msecs_expire(&timer, 100); |
| 264 | uint32_t reg32; |
| 265 | do { |
| 266 | reg32 = 0; |
| 267 | for (unsigned int port = 0; port < xhci_ports; port++) |
| 268 | reg32 |= read32(xhci_bar + XHCI_USB3_PORTSC(port)); |
| 269 | |
| 270 | reg32 &= XHCI_USB3_PORTSC_PR; |
| 271 | if (!reg32) { |
| 272 | const long elapsed_time = stopwatch_duration_usecs(&timer); |
| 273 | printk(BIOS_DEBUG, "%s: took %lu usecs\n", __func__, elapsed_time); |
| 274 | return true; |
| 275 | } |
| 276 | /* Reference code has a 10 ms delay here, but a smaller delay works too */ |
| 277 | udelay(100); |
| 278 | } while (!stopwatch_expired(&timer)); |
| 279 | printk(BIOS_ERR, "%s: timed out\n", __func__); |
| 280 | return !reg32; |
| 281 | } |
| 282 | |
| 283 | static void perform_xhci_ehci_switching_flow(const enum usb_port_route usb_route) |
| 284 | { |
| 285 | const pci_devfn_t dev = PCH_XHCI_DEV; |
| 286 | |
| 287 | const unsigned int ehci_ports = hs_port_count() + is_usbr_enabled(); |
| 288 | const unsigned int xhci_ports = ss_port_count(); |
| 289 | |
| 290 | const uint32_t ehci_mask = BIT(ehci_ports) - 1; |
| 291 | const uint32_t xhci_mask = BIT(xhci_ports) - 1; |
| 292 | |
| 293 | /** TODO: Handle USBr port? How, though? **/ |
| 294 | pci_update_config32(dev, XHCI_USB2PRM, ~XHCI_USB2PR_HCSEL, ehci_mask); |
| 295 | pci_update_config32(dev, XHCI_USB3PRM, ~XHCI_USB3PR_SSEN, xhci_mask); |
| 296 | |
| 297 | /* |
| 298 | * Workaround for USB2PR / USB3PR value not surviving warm reset. |
| 299 | * Restore USB Port Routing registers if OS HC Switch driver has been executed. |
| 300 | */ |
| 301 | if (should_restore_xhci_smart_auto()) { |
| 302 | /** FIXME: Derive values from mainboard code instead? **/ |
| 303 | pci_update_config32(dev, XHCI_USB2PR, ~XHCI_USB2PR_HCSEL, ehci_mask); |
| 304 | pci_update_config32(dev, XHCI_USB3PR, ~XHCI_USB3PR_SSEN, xhci_mask); |
| 305 | } |
| 306 | |
| 307 | /* Later stages shouldn't need the value of this bit */ |
| 308 | pci_and_config32(PCH_LPC_DEV, PMIR, ~PMIR_XHCI_SMART_AUTO); |
| 309 | |
| 310 | /** |
| 311 | * FIXME: Things here depend on the chosen routing mode. |
| 312 | * For now, implement both functions. |
| 313 | */ |
| 314 | |
| 315 | /* Route to EHCI if xHCI disabled or auto mode */ |
| 316 | if (usb_route == ROUTE_TO_EHCI) { |
| 317 | if (!reset_usb2_ports(ehci_ports)) |
| 318 | printk(BIOS_ERR, "USB2 port reset timed out\n"); |
| 319 | |
| 320 | pci_and_config32(dev, XHCI_USB2PR, ~XHCI_USB2PR_HCSEL); |
| 321 | |
| 322 | for (unsigned int port = 0; port < ehci_ports; port++) { |
| 323 | clrsetbits32( |
| 324 | xhci_bar + XHCI_USB2_PORTSC(port), |
| 325 | XHCI_USB2_PORTSC_PED, |
| 326 | XHCI_USB2_PORTSC_CHST); |
| 327 | } |
| 328 | |
| 329 | if (!warm_reset_usb3_ports(xhci_ports)) |
| 330 | printk(BIOS_ERR, "USB3 warm reset timed out\n"); |
| 331 | |
| 332 | /* FIXME: BWG says this should be inside the warm reset function */ |
| 333 | pci_and_config32(dev, XHCI_USB3PR, ~XHCI_USB3PR_SSEN); |
| 334 | |
| 335 | for (unsigned int port = 0; port < ehci_ports; port++) { |
| 336 | clrsetbits32( |
| 337 | xhci_bar + XHCI_USB3_PORTSC(port), |
| 338 | XHCI_USB3_PORTSC_PED, |
| 339 | XHCI_USB3_PORTSC_CHST); |
| 340 | } |
| 341 | |
| 342 | setbits32(xhci_bar + XHCI_USBCMD, BIT(0)); |
| 343 | clrbits32(xhci_bar + XHCI_USBCMD, BIT(0)); |
| 344 | } |
| 345 | |
| 346 | /* Route to xHCI if xHCI enabled */ |
| 347 | if (usb_route == ROUTE_TO_XHCI) { |
| 348 | if (is_mem_sr()) { |
| 349 | if (!warm_reset_usb3_ports(xhci_ports)) |
| 350 | printk(BIOS_ERR, "USB3 warm reset timed out\n"); |
| 351 | } |
| 352 | |
| 353 | const uint32_t xhci_port_mask = pci_read_config32(dev, XHCI_USB3PRM) & 0x3f; |
| 354 | pci_update_config32(dev, XHCI_USB3PR, ~XHCI_USB3PR_SSEN, xhci_port_mask); |
| 355 | |
| 356 | const uint32_t ehci_port_mask = pci_read_config32(dev, XHCI_USB2PRM) & 0x7fff; |
| 357 | pci_update_config32(dev, XHCI_USB2PR, ~XHCI_USB2PR_HCSEL, ehci_port_mask); |
| 358 | } |
| 359 | } |
| 360 | |
| 361 | /* Do not shift in this macro, as it can cause undefined behaviour for bad port/oc values */ |
| 362 | #define PORT_TO_OC_SHIFT(port, oc) ((oc) * 8 + (port)) |
| 363 | |
| 364 | /* Avoid shifting into undefined behaviour */ |
| 365 | static inline bool shift_ok(const int shift) |
| 366 | { |
| 367 | return shift >= 0 && shift < 32; |
| 368 | } |
| 369 | |
| 370 | static void usb_overcurrent_mapping(void) |
| 371 | { |
| 372 | const bool is_lp = CONFIG(INTEL_LYNXPOINT_LP); |
| 373 | |
| 374 | uint32_t ehci_1_ocmap = 0; |
| 375 | uint32_t ehci_2_ocmap = 0; |
| 376 | uint32_t xhci_1_ocmap = 0; |
| 377 | uint32_t xhci_2_ocmap = 0; |
| 378 | |
| 379 | /* |
| 380 | * EHCI |
| 381 | */ |
| 382 | for (unsigned int idx = 0; idx < physical_port_count(); idx++) { |
| 383 | const struct usb2_port_config *const port = &mainboard_usb2_ports[idx]; |
| 384 | printk(BIOS_DEBUG, "USB2 port %u => ", idx); |
| 385 | if (!port->enable) { |
| 386 | printk(BIOS_DEBUG, "disabled\n"); |
| 387 | continue; |
| 388 | } |
| 389 | const unsigned short oc_pin = port->oc_pin; |
| 390 | if (oc_pin == USB_OC_PIN_SKIP) { |
| 391 | printk(BIOS_DEBUG, "not mapped to OC pin\n"); |
| 392 | continue; |
| 393 | } |
| 394 | /* Ports 0 .. 7 => OC 0 .. 3 */ |
| 395 | if (idx < 8 && oc_pin <= 3) { |
| 396 | const int shift = PORT_TO_OC_SHIFT(idx, oc_pin); |
| 397 | if (shift_ok(shift)) { |
| 398 | printk(BIOS_DEBUG, "mapped to OC pin %u\n", oc_pin); |
| 399 | ehci_1_ocmap |= 1 << shift; |
| 400 | continue; |
| 401 | } |
| 402 | } |
| 403 | /* Ports 8 .. 13 => OC 4 .. 7 (LPT-H only) */ |
| 404 | if (!is_lp && idx >= 8 && oc_pin >= 4) { |
| 405 | const int shift = PORT_TO_OC_SHIFT(idx, oc_pin - 4); |
| 406 | if (shift_ok(shift)) { |
| 407 | printk(BIOS_DEBUG, "mapped to OC pin %u\n", oc_pin); |
| 408 | ehci_2_ocmap |= 1 << shift; |
| 409 | continue; |
| 410 | } |
| 411 | } |
| 412 | printk(BIOS_ERR, "Invalid OC pin %u for USB2 port %u\n", oc_pin, idx); |
| 413 | } |
| 414 | printk(BIOS_DEBUG, "\n"); |
| 415 | pci_write_config32(PCH_EHCI1_DEV, EHCI_OCMAP, ehci_1_ocmap); |
| 416 | if (!is_lp) |
| 417 | pci_write_config32(PCH_EHCI2_DEV, EHCI_OCMAP, ehci_2_ocmap); |
| 418 | |
| 419 | /* |
| 420 | * xHCI |
| 421 | */ |
| 422 | for (unsigned int idx = 0; idx < ss_port_count(); idx++) { |
| 423 | const struct usb3_port_config *const port = &mainboard_usb3_ports[idx]; |
| 424 | printk(BIOS_DEBUG, "USB3 port %u => ", idx); |
| 425 | if (!port->enable) { |
| 426 | printk(BIOS_DEBUG, "disabled\n"); |
| 427 | continue; |
| 428 | } |
| 429 | const unsigned short oc_pin = port->oc_pin; |
| 430 | if (oc_pin == USB_OC_PIN_SKIP) { |
| 431 | printk(BIOS_DEBUG, "not mapped to OC pin\n"); |
| 432 | continue; |
| 433 | } |
| 434 | /* Ports 0 .. 5 => OC 0 .. 3 */ |
| 435 | if (oc_pin <= 3) { |
| 436 | const int shift = PORT_TO_OC_SHIFT(idx, oc_pin); |
| 437 | if (shift_ok(shift)) { |
| 438 | printk(BIOS_DEBUG, "mapped to OC pin %u\n", oc_pin); |
| 439 | xhci_1_ocmap |= 1 << shift; |
| 440 | continue; |
| 441 | } |
| 442 | } |
| 443 | /* Ports 0 .. 5 => OC 4 .. 7 (LPT-H only) */ |
| 444 | if (!is_lp && oc_pin >= 4) { |
| 445 | const int shift = PORT_TO_OC_SHIFT(idx, oc_pin - 4); |
| 446 | if (shift_ok(shift)) { |
| 447 | printk(BIOS_DEBUG, "mapped to OC pin %u\n", oc_pin); |
| 448 | xhci_2_ocmap |= 1 << shift; |
| 449 | continue; |
| 450 | } |
| 451 | } |
| 452 | printk(BIOS_ERR, "Invalid OC pin %u for USB3 port %u\n", oc_pin, idx); |
| 453 | } |
| 454 | printk(BIOS_DEBUG, "\n"); |
| 455 | pci_write_config32(PCH_XHCI_DEV, XHCI_U2OCM1, ehci_1_ocmap); |
| 456 | pci_write_config32(PCH_XHCI_DEV, XHCI_U3OCM1, xhci_1_ocmap); |
| 457 | if (!is_lp) { |
| 458 | pci_write_config32(PCH_XHCI_DEV, XHCI_U2OCM2, ehci_2_ocmap); |
| 459 | pci_write_config32(PCH_XHCI_DEV, XHCI_U3OCM2, xhci_2_ocmap); |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | static uint8_t get_ehci_tune_param_1(const struct usb2_port_config *const port) |
| 464 | { |
| 465 | const bool is_lp = CONFIG(INTEL_LYNXPOINT_LP); |
| 466 | |
| 467 | const enum pch_platform_type plat_type = get_pch_platform_type(); |
| 468 | const enum usb2_port_location location = port->location; |
| 469 | const uint16_t length = port->length; |
| 470 | if (!is_lp) { |
| 471 | if (plat_type == PCH_TYPE_DESKTOP) { |
| 472 | if (location == USB_PORT_BACK_PANEL) |
| 473 | return 4; /* Back Panel */ |
| 474 | else |
| 475 | return 3; /* Front Panel */ |
| 476 | |
| 477 | } else if (plat_type == PCH_TYPE_MOBILE) { |
| 478 | if (location == USB_PORT_INTERNAL) |
| 479 | return 5; /* Internal Topology */ |
| 480 | else if (location == USB_PORT_DOCK) |
| 481 | return 4; /* Dock */ |
| 482 | else if (length < 0x70) |
| 483 | return 5; /* Back Panel, less than 7" */ |
| 484 | else |
| 485 | return 6; /* Back Panel, 7" or more */ |
| 486 | } |
| 487 | } else { |
| 488 | if (location == USB_PORT_BACK_PANEL || location == USB_PORT_MINI_PCIE) { |
| 489 | if (length < 0x70) |
| 490 | return 5; /* Back Panel, less than 7" */ |
| 491 | else |
| 492 | return 6; /* Back Panel, 7" or more */ |
| 493 | } else if (location == USB_PORT_DOCK) { |
| 494 | return 4; /* Dock */ |
| 495 | } else { |
| 496 | return 5; /* Internal Topology */ |
| 497 | } |
| 498 | } |
| 499 | printk(BIOS_ERR, "%s: Unhandled case\n", __func__); |
| 500 | return 0; |
| 501 | } |
| 502 | |
| 503 | static uint8_t get_ehci_tune_param_2(const struct usb2_port_config *const port) |
| 504 | { |
| 505 | const bool is_lp = CONFIG(INTEL_LYNXPOINT_LP); |
| 506 | |
| 507 | const enum pch_platform_type plat_type = get_pch_platform_type(); |
| 508 | const enum usb2_port_location location = port->location; |
| 509 | const uint16_t length = port->length; |
| 510 | if (!is_lp) { |
| 511 | if (plat_type == PCH_TYPE_DESKTOP) { |
| 512 | if (location == USB_PORT_BACK_PANEL) { |
| 513 | if (length < 0x80) |
| 514 | return 2; /* Back Panel, less than 8" */ |
| 515 | else if (length < 0x130) |
| 516 | return 3; /* Back Panel, 8"-13" */ |
| 517 | else |
| 518 | return 4; /* Back Panel, 13" or more */ |
| 519 | } else { |
| 520 | return 2; /* Front Panel */ |
| 521 | } |
| 522 | |
| 523 | } else if (plat_type == PCH_TYPE_MOBILE) { |
| 524 | if (location == USB_PORT_INTERNAL) { |
| 525 | return 2; /* Internal Topology */ |
| 526 | } else if (location == USB_PORT_DOCK) { |
| 527 | if (length < 0x50) |
| 528 | return 1; /* Dock, less than 5" */ |
| 529 | else |
| 530 | return 2; /* Dock, 5" or more */ |
| 531 | } else { |
| 532 | if (length < 0x100) |
| 533 | return 2; /* Back Panel, less than 10" */ |
| 534 | else |
| 535 | return 3; /* Back Panel, 10" or more */ |
| 536 | } |
| 537 | } |
| 538 | } else { |
| 539 | if (location == USB_PORT_BACK_PANEL || location == USB_PORT_MINI_PCIE) { |
| 540 | if (length < 0x100) |
| 541 | return 2; /* Back Panel, less than 10" */ |
| 542 | else |
| 543 | return 3; /* Back Panel, 10" or more */ |
| 544 | } else if (location == USB_PORT_DOCK) { |
| 545 | if (length < 0x50) |
| 546 | return 1; /* Dock, less than 5" */ |
| 547 | else |
| 548 | return 2; /* Dock, 5" or more */ |
| 549 | } else { |
| 550 | return 2; /* Internal Topology */ |
| 551 | } |
| 552 | } |
| 553 | printk(BIOS_ERR, "%s: Unhandled case\n", __func__); |
| 554 | return 0; |
| 555 | } |
| 556 | |
| 557 | static void program_ehci_port_length(void) |
| 558 | { |
| 559 | for (unsigned int port = 0; port < physical_port_count(); port++) { |
| 560 | if (!mainboard_usb2_ports[port].enable) |
| 561 | continue; |
| 562 | const uint32_t addr = 0xe5004000 + (port + 1) * 0x100; |
| 563 | const uint8_t param_1 = get_ehci_tune_param_1(&mainboard_usb2_ports[port]); |
| 564 | const uint8_t param_2 = get_ehci_tune_param_2(&mainboard_usb2_ports[port]); |
| 565 | pch_iobp_update(addr, ~0x7f00, param_2 << 11 | param_1 << 8); |
| 566 | } |
| 567 | } |
| 568 | |
| 569 | void early_usb_init(void) |
| 570 | { |
| 571 | /** TODO: Make this configurable? How do the modes affect usbdebug? **/ |
| 572 | const enum usb_port_route usb_route = ROUTE_TO_XHCI; |
| 573 | ///(pd->boot_mode == 2 && pd->usb_xhci_on_resume) ? ROUTE_TO_XHCI : ROUTE_TO_EHCI; |
| 574 | |
| 575 | common_ehci_hcs_init(); |
| 576 | xhci_open_memory_space(); |
| 577 | common_xhci_hc_init(); |
| 578 | perform_xhci_ehci_switching_flow(usb_route); |
| 579 | usb_overcurrent_mapping(); |
| 580 | program_ehci_port_length(); |
| 581 | /** FIXME: USB per port control is missing, is it needed? **/ |
| 582 | xhci_close_memory_space(); |
| 583 | /** TODO: Close EHCI memory space? **/ |
| 584 | } |