Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 1 | /* |
| 2 | * USB HOST XHCI Controller stack |
| 3 | * |
| 4 | * Based on xHCI host controller driver in linux-kernel |
| 5 | * by Sarah Sharp. |
| 6 | * |
| 7 | * Copyright (C) 2008 Intel Corp. |
| 8 | * Author: Sarah Sharp |
| 9 | * |
| 10 | * Copyright (C) 2013 Samsung Electronics Co.Ltd |
| 11 | * Authors: Vivek Gautam <gautam.vivek@samsung.com> |
| 12 | * Vikas Sajjan <vikas.sajjan@samsung.com> |
| 13 | * |
| 14 | * SPDX-License-Identifier: GPL-2.0+ |
| 15 | */ |
| 16 | |
| 17 | /** |
| 18 | * This file gives the xhci stack for usb3.0 looking into |
| 19 | * xhci specification Rev1.0 (5/21/10). |
| 20 | * The quirk devices support hasn't been given yet. |
| 21 | */ |
| 22 | |
| 23 | #include <common.h> |
Simon Glass | 49b4183 | 2015-03-25 12:22:53 -0600 | [diff] [blame] | 24 | #include <dm.h> |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 25 | #include <asm/byteorder.h> |
| 26 | #include <usb.h> |
| 27 | #include <malloc.h> |
| 28 | #include <watchdog.h> |
| 29 | #include <asm/cache.h> |
| 30 | #include <asm/unaligned.h> |
| 31 | #include <asm-generic/errno.h> |
| 32 | #include "xhci.h" |
| 33 | |
| 34 | #ifndef CONFIG_USB_MAX_CONTROLLER_COUNT |
| 35 | #define CONFIG_USB_MAX_CONTROLLER_COUNT 1 |
| 36 | #endif |
| 37 | |
| 38 | static struct descriptor { |
| 39 | struct usb_hub_descriptor hub; |
| 40 | struct usb_device_descriptor device; |
| 41 | struct usb_config_descriptor config; |
| 42 | struct usb_interface_descriptor interface; |
| 43 | struct usb_endpoint_descriptor endpoint; |
| 44 | struct usb_ss_ep_comp_descriptor ep_companion; |
| 45 | } __attribute__ ((packed)) descriptor = { |
| 46 | { |
| 47 | 0xc, /* bDescLength */ |
| 48 | 0x2a, /* bDescriptorType: hub descriptor */ |
| 49 | 2, /* bNrPorts -- runtime modified */ |
| 50 | cpu_to_le16(0x8), /* wHubCharacteristics */ |
| 51 | 10, /* bPwrOn2PwrGood */ |
| 52 | 0, /* bHubCntrCurrent */ |
| 53 | {}, /* Device removable */ |
| 54 | {} /* at most 7 ports! XXX */ |
| 55 | }, |
| 56 | { |
| 57 | 0x12, /* bLength */ |
| 58 | 1, /* bDescriptorType: UDESC_DEVICE */ |
| 59 | cpu_to_le16(0x0300), /* bcdUSB: v3.0 */ |
| 60 | 9, /* bDeviceClass: UDCLASS_HUB */ |
| 61 | 0, /* bDeviceSubClass: UDSUBCLASS_HUB */ |
| 62 | 3, /* bDeviceProtocol: UDPROTO_SSHUBSTT */ |
| 63 | 9, /* bMaxPacketSize: 512 bytes 2^9 */ |
| 64 | 0x0000, /* idVendor */ |
| 65 | 0x0000, /* idProduct */ |
| 66 | cpu_to_le16(0x0100), /* bcdDevice */ |
| 67 | 1, /* iManufacturer */ |
| 68 | 2, /* iProduct */ |
| 69 | 0, /* iSerialNumber */ |
| 70 | 1 /* bNumConfigurations: 1 */ |
| 71 | }, |
| 72 | { |
| 73 | 0x9, |
| 74 | 2, /* bDescriptorType: UDESC_CONFIG */ |
| 75 | cpu_to_le16(0x1f), /* includes SS endpoint descriptor */ |
| 76 | 1, /* bNumInterface */ |
| 77 | 1, /* bConfigurationValue */ |
| 78 | 0, /* iConfiguration */ |
| 79 | 0x40, /* bmAttributes: UC_SELF_POWER */ |
| 80 | 0 /* bMaxPower */ |
| 81 | }, |
| 82 | { |
| 83 | 0x9, /* bLength */ |
| 84 | 4, /* bDescriptorType: UDESC_INTERFACE */ |
| 85 | 0, /* bInterfaceNumber */ |
| 86 | 0, /* bAlternateSetting */ |
| 87 | 1, /* bNumEndpoints */ |
| 88 | 9, /* bInterfaceClass: UICLASS_HUB */ |
| 89 | 0, /* bInterfaceSubClass: UISUBCLASS_HUB */ |
| 90 | 0, /* bInterfaceProtocol: UIPROTO_HSHUBSTT */ |
| 91 | 0 /* iInterface */ |
| 92 | }, |
| 93 | { |
| 94 | 0x7, /* bLength */ |
| 95 | 5, /* bDescriptorType: UDESC_ENDPOINT */ |
| 96 | 0x81, /* bEndpointAddress: IN endpoint 1 */ |
| 97 | 3, /* bmAttributes: UE_INTERRUPT */ |
| 98 | 8, /* wMaxPacketSize */ |
| 99 | 255 /* bInterval */ |
| 100 | }, |
| 101 | { |
| 102 | 0x06, /* ss_bLength */ |
| 103 | 0x30, /* ss_bDescriptorType: SS EP Companion */ |
| 104 | 0x00, /* ss_bMaxBurst: allows 1 TX between ACKs */ |
| 105 | /* ss_bmAttributes: 1 packet per service interval */ |
| 106 | 0x00, |
| 107 | /* ss_wBytesPerInterval: 15 bits for max 15 ports */ |
| 108 | cpu_to_le16(0x02), |
| 109 | }, |
| 110 | }; |
| 111 | |
Simon Glass | 49b4183 | 2015-03-25 12:22:53 -0600 | [diff] [blame] | 112 | #ifndef CONFIG_DM_USB |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 113 | static struct xhci_ctrl xhcic[CONFIG_USB_MAX_CONTROLLER_COUNT]; |
Simon Glass | 49b4183 | 2015-03-25 12:22:53 -0600 | [diff] [blame] | 114 | #endif |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 115 | |
Simon Glass | a49e27b | 2015-03-25 12:22:49 -0600 | [diff] [blame] | 116 | struct xhci_ctrl *xhci_get_ctrl(struct usb_device *udev) |
| 117 | { |
Simon Glass | 49b4183 | 2015-03-25 12:22:53 -0600 | [diff] [blame] | 118 | #ifdef CONFIG_DM_USB |
| 119 | struct udevice *dev; |
| 120 | |
| 121 | /* Find the USB controller */ |
| 122 | for (dev = udev->dev; |
| 123 | device_get_uclass_id(dev) != UCLASS_USB; |
| 124 | dev = dev->parent) |
| 125 | ; |
| 126 | return dev_get_priv(dev); |
| 127 | #else |
Simon Glass | a49e27b | 2015-03-25 12:22:49 -0600 | [diff] [blame] | 128 | return udev->controller; |
Simon Glass | 49b4183 | 2015-03-25 12:22:53 -0600 | [diff] [blame] | 129 | #endif |
Simon Glass | a49e27b | 2015-03-25 12:22:49 -0600 | [diff] [blame] | 130 | } |
| 131 | |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 132 | /** |
| 133 | * Waits for as per specified amount of time |
| 134 | * for the "result" to match with "done" |
| 135 | * |
| 136 | * @param ptr pointer to the register to be read |
| 137 | * @param mask mask for the value read |
| 138 | * @param done value to be campared with result |
| 139 | * @param usec time to wait till |
| 140 | * @return 0 if handshake is success else < 0 on failure |
| 141 | */ |
| 142 | static int handshake(uint32_t volatile *ptr, uint32_t mask, |
| 143 | uint32_t done, int usec) |
| 144 | { |
| 145 | uint32_t result; |
| 146 | |
| 147 | do { |
| 148 | result = xhci_readl(ptr); |
| 149 | if (result == ~(uint32_t)0) |
| 150 | return -ENODEV; |
| 151 | result &= mask; |
| 152 | if (result == done) |
| 153 | return 0; |
| 154 | usec--; |
| 155 | udelay(1); |
| 156 | } while (usec > 0); |
| 157 | |
| 158 | return -ETIMEDOUT; |
| 159 | } |
| 160 | |
| 161 | /** |
| 162 | * Set the run bit and wait for the host to be running. |
| 163 | * |
| 164 | * @param hcor pointer to host controller operation registers |
| 165 | * @return status of the Handshake |
| 166 | */ |
| 167 | static int xhci_start(struct xhci_hcor *hcor) |
| 168 | { |
| 169 | u32 temp; |
| 170 | int ret; |
| 171 | |
| 172 | puts("Starting the controller\n"); |
| 173 | temp = xhci_readl(&hcor->or_usbcmd); |
| 174 | temp |= (CMD_RUN); |
| 175 | xhci_writel(&hcor->or_usbcmd, temp); |
| 176 | |
| 177 | /* |
| 178 | * Wait for the HCHalted Status bit to be 0 to indicate the host is |
| 179 | * running. |
| 180 | */ |
| 181 | ret = handshake(&hcor->or_usbsts, STS_HALT, 0, XHCI_MAX_HALT_USEC); |
| 182 | if (ret) |
| 183 | debug("Host took too long to start, " |
| 184 | "waited %u microseconds.\n", |
| 185 | XHCI_MAX_HALT_USEC); |
| 186 | return ret; |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * Resets the XHCI Controller |
| 191 | * |
| 192 | * @param hcor pointer to host controller operation registers |
| 193 | * @return -EBUSY if XHCI Controller is not halted else status of handshake |
| 194 | */ |
| 195 | int xhci_reset(struct xhci_hcor *hcor) |
| 196 | { |
| 197 | u32 cmd; |
| 198 | u32 state; |
| 199 | int ret; |
| 200 | |
| 201 | /* Halting the Host first */ |
Sergey Temerkhanov | 65bb454 | 2015-08-17 15:38:07 +0300 | [diff] [blame] | 202 | debug("// Halt the HC: %p\n", hcor); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 203 | state = xhci_readl(&hcor->or_usbsts) & STS_HALT; |
| 204 | if (!state) { |
| 205 | cmd = xhci_readl(&hcor->or_usbcmd); |
| 206 | cmd &= ~CMD_RUN; |
| 207 | xhci_writel(&hcor->or_usbcmd, cmd); |
| 208 | } |
| 209 | |
| 210 | ret = handshake(&hcor->or_usbsts, |
| 211 | STS_HALT, STS_HALT, XHCI_MAX_HALT_USEC); |
| 212 | if (ret) { |
| 213 | printf("Host not halted after %u microseconds.\n", |
| 214 | XHCI_MAX_HALT_USEC); |
| 215 | return -EBUSY; |
| 216 | } |
| 217 | |
| 218 | debug("// Reset the HC\n"); |
| 219 | cmd = xhci_readl(&hcor->or_usbcmd); |
| 220 | cmd |= CMD_RESET; |
| 221 | xhci_writel(&hcor->or_usbcmd, cmd); |
| 222 | |
| 223 | ret = handshake(&hcor->or_usbcmd, CMD_RESET, 0, XHCI_MAX_RESET_USEC); |
| 224 | if (ret) |
| 225 | return ret; |
| 226 | |
| 227 | /* |
| 228 | * xHCI cannot write to any doorbells or operational registers other |
| 229 | * than status until the "Controller Not Ready" flag is cleared. |
| 230 | */ |
| 231 | return handshake(&hcor->or_usbsts, STS_CNR, 0, XHCI_MAX_RESET_USEC); |
| 232 | } |
| 233 | |
| 234 | /** |
| 235 | * Used for passing endpoint bitmasks between the core and HCDs. |
| 236 | * Find the index for an endpoint given its descriptor. |
| 237 | * Use the return value to right shift 1 for the bitmask. |
| 238 | * |
| 239 | * Index = (epnum * 2) + direction - 1, |
| 240 | * where direction = 0 for OUT, 1 for IN. |
| 241 | * For control endpoints, the IN index is used (OUT index is unused), so |
| 242 | * index = (epnum * 2) + direction - 1 = (epnum * 2) + 1 - 1 = (epnum * 2) |
| 243 | * |
| 244 | * @param desc USB enpdoint Descriptor |
| 245 | * @return index of the Endpoint |
| 246 | */ |
| 247 | static unsigned int xhci_get_ep_index(struct usb_endpoint_descriptor *desc) |
| 248 | { |
| 249 | unsigned int index; |
| 250 | |
| 251 | if (usb_endpoint_xfer_control(desc)) |
| 252 | index = (unsigned int)(usb_endpoint_num(desc) * 2); |
| 253 | else |
| 254 | index = (unsigned int)((usb_endpoint_num(desc) * 2) - |
| 255 | (usb_endpoint_dir_in(desc) ? 0 : 1)); |
| 256 | |
| 257 | return index; |
| 258 | } |
| 259 | |
| 260 | /** |
| 261 | * Issue a configure endpoint command or evaluate context command |
| 262 | * and wait for it to finish. |
| 263 | * |
| 264 | * @param udev pointer to the Device Data Structure |
| 265 | * @param ctx_change flag to indicate the Context has changed or NOT |
| 266 | * @return 0 on success, -1 on failure |
| 267 | */ |
| 268 | static int xhci_configure_endpoints(struct usb_device *udev, bool ctx_change) |
| 269 | { |
| 270 | struct xhci_container_ctx *in_ctx; |
| 271 | struct xhci_virt_device *virt_dev; |
Simon Glass | a49e27b | 2015-03-25 12:22:49 -0600 | [diff] [blame] | 272 | struct xhci_ctrl *ctrl = xhci_get_ctrl(udev); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 273 | union xhci_trb *event; |
| 274 | |
| 275 | virt_dev = ctrl->devs[udev->slot_id]; |
| 276 | in_ctx = virt_dev->in_ctx; |
| 277 | |
Sergey Temerkhanov | 3859346 | 2015-04-01 17:18:45 +0300 | [diff] [blame] | 278 | xhci_flush_cache((uintptr_t)in_ctx->bytes, in_ctx->size); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 279 | xhci_queue_command(ctrl, in_ctx->bytes, udev->slot_id, 0, |
| 280 | ctx_change ? TRB_EVAL_CONTEXT : TRB_CONFIG_EP); |
| 281 | event = xhci_wait_for_event(ctrl, TRB_COMPLETION); |
| 282 | BUG_ON(TRB_TO_SLOT_ID(le32_to_cpu(event->event_cmd.flags)) |
| 283 | != udev->slot_id); |
| 284 | |
| 285 | switch (GET_COMP_CODE(le32_to_cpu(event->event_cmd.status))) { |
| 286 | case COMP_SUCCESS: |
| 287 | debug("Successful %s command\n", |
| 288 | ctx_change ? "Evaluate Context" : "Configure Endpoint"); |
| 289 | break; |
| 290 | default: |
| 291 | printf("ERROR: %s command returned completion code %d.\n", |
| 292 | ctx_change ? "Evaluate Context" : "Configure Endpoint", |
| 293 | GET_COMP_CODE(le32_to_cpu(event->event_cmd.status))); |
| 294 | return -EINVAL; |
| 295 | } |
| 296 | |
| 297 | xhci_acknowledge_event(ctrl); |
| 298 | |
| 299 | return 0; |
| 300 | } |
| 301 | |
| 302 | /** |
| 303 | * Configure the endpoint, programming the device contexts. |
| 304 | * |
| 305 | * @param udev pointer to the USB device structure |
| 306 | * @return returns the status of the xhci_configure_endpoints |
| 307 | */ |
| 308 | static int xhci_set_configuration(struct usb_device *udev) |
| 309 | { |
| 310 | struct xhci_container_ctx *in_ctx; |
| 311 | struct xhci_container_ctx *out_ctx; |
| 312 | struct xhci_input_control_ctx *ctrl_ctx; |
| 313 | struct xhci_slot_ctx *slot_ctx; |
| 314 | struct xhci_ep_ctx *ep_ctx[MAX_EP_CTX_NUM]; |
| 315 | int cur_ep; |
| 316 | int max_ep_flag = 0; |
| 317 | int ep_index; |
| 318 | unsigned int dir; |
| 319 | unsigned int ep_type; |
Simon Glass | a49e27b | 2015-03-25 12:22:49 -0600 | [diff] [blame] | 320 | struct xhci_ctrl *ctrl = xhci_get_ctrl(udev); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 321 | int num_of_ep; |
| 322 | int ep_flag = 0; |
| 323 | u64 trb_64 = 0; |
| 324 | int slot_id = udev->slot_id; |
| 325 | struct xhci_virt_device *virt_dev = ctrl->devs[slot_id]; |
| 326 | struct usb_interface *ifdesc; |
| 327 | |
| 328 | out_ctx = virt_dev->out_ctx; |
| 329 | in_ctx = virt_dev->in_ctx; |
| 330 | |
| 331 | num_of_ep = udev->config.if_desc[0].no_of_ep; |
| 332 | ifdesc = &udev->config.if_desc[0]; |
| 333 | |
| 334 | ctrl_ctx = xhci_get_input_control_ctx(in_ctx); |
| 335 | /* Zero the input context control */ |
| 336 | ctrl_ctx->add_flags = 0; |
| 337 | ctrl_ctx->drop_flags = 0; |
| 338 | |
| 339 | /* EP_FLAG gives values 1 & 4 for EP1OUT and EP2IN */ |
| 340 | for (cur_ep = 0; cur_ep < num_of_ep; cur_ep++) { |
| 341 | ep_flag = xhci_get_ep_index(&ifdesc->ep_desc[cur_ep]); |
| 342 | ctrl_ctx->add_flags |= cpu_to_le32(1 << (ep_flag + 1)); |
| 343 | if (max_ep_flag < ep_flag) |
| 344 | max_ep_flag = ep_flag; |
| 345 | } |
| 346 | |
Sergey Temerkhanov | 3859346 | 2015-04-01 17:18:45 +0300 | [diff] [blame] | 347 | xhci_inval_cache((uintptr_t)out_ctx->bytes, out_ctx->size); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 348 | |
| 349 | /* slot context */ |
| 350 | xhci_slot_copy(ctrl, in_ctx, out_ctx); |
| 351 | slot_ctx = xhci_get_slot_ctx(ctrl, in_ctx); |
| 352 | slot_ctx->dev_info &= ~(LAST_CTX_MASK); |
| 353 | slot_ctx->dev_info |= cpu_to_le32(LAST_CTX(max_ep_flag + 1) | 0); |
| 354 | |
| 355 | xhci_endpoint_copy(ctrl, in_ctx, out_ctx, 0); |
| 356 | |
| 357 | /* filling up ep contexts */ |
| 358 | for (cur_ep = 0; cur_ep < num_of_ep; cur_ep++) { |
| 359 | struct usb_endpoint_descriptor *endpt_desc = NULL; |
| 360 | |
| 361 | endpt_desc = &ifdesc->ep_desc[cur_ep]; |
| 362 | trb_64 = 0; |
| 363 | |
| 364 | ep_index = xhci_get_ep_index(endpt_desc); |
| 365 | ep_ctx[ep_index] = xhci_get_ep_ctx(ctrl, in_ctx, ep_index); |
| 366 | |
| 367 | /* Allocate the ep rings */ |
| 368 | virt_dev->eps[ep_index].ring = xhci_ring_alloc(1, true); |
| 369 | if (!virt_dev->eps[ep_index].ring) |
| 370 | return -ENOMEM; |
| 371 | |
| 372 | /*NOTE: ep_desc[0] actually represents EP1 and so on */ |
| 373 | dir = (((endpt_desc->bEndpointAddress) & (0x80)) >> 7); |
| 374 | ep_type = (((endpt_desc->bmAttributes) & (0x3)) | (dir << 2)); |
| 375 | ep_ctx[ep_index]->ep_info2 = |
| 376 | cpu_to_le32(ep_type << EP_TYPE_SHIFT); |
| 377 | ep_ctx[ep_index]->ep_info2 |= |
| 378 | cpu_to_le32(MAX_PACKET |
| 379 | (get_unaligned(&endpt_desc->wMaxPacketSize))); |
| 380 | |
| 381 | ep_ctx[ep_index]->ep_info2 |= |
| 382 | cpu_to_le32(((0 & MAX_BURST_MASK) << MAX_BURST_SHIFT) | |
| 383 | ((3 & ERROR_COUNT_MASK) << ERROR_COUNT_SHIFT)); |
| 384 | |
| 385 | trb_64 = (uintptr_t) |
| 386 | virt_dev->eps[ep_index].ring->enqueue; |
| 387 | ep_ctx[ep_index]->deq = cpu_to_le64(trb_64 | |
| 388 | virt_dev->eps[ep_index].ring->cycle_state); |
| 389 | } |
| 390 | |
| 391 | return xhci_configure_endpoints(udev, false); |
| 392 | } |
| 393 | |
| 394 | /** |
| 395 | * Issue an Address Device command (which will issue a SetAddress request to |
| 396 | * the device). |
| 397 | * |
| 398 | * @param udev pointer to the Device Data Structure |
| 399 | * @return 0 if successful else error code on failure |
| 400 | */ |
Simon Glass | 4ec422c | 2015-03-25 12:22:51 -0600 | [diff] [blame] | 401 | static int xhci_address_device(struct usb_device *udev, int root_portnr) |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 402 | { |
| 403 | int ret = 0; |
Simon Glass | a49e27b | 2015-03-25 12:22:49 -0600 | [diff] [blame] | 404 | struct xhci_ctrl *ctrl = xhci_get_ctrl(udev); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 405 | struct xhci_slot_ctx *slot_ctx; |
| 406 | struct xhci_input_control_ctx *ctrl_ctx; |
| 407 | struct xhci_virt_device *virt_dev; |
| 408 | int slot_id = udev->slot_id; |
| 409 | union xhci_trb *event; |
| 410 | |
| 411 | virt_dev = ctrl->devs[slot_id]; |
| 412 | |
| 413 | /* |
| 414 | * This is the first Set Address since device plug-in |
| 415 | * so setting up the slot context. |
| 416 | */ |
Simon Glass | 4ec422c | 2015-03-25 12:22:51 -0600 | [diff] [blame] | 417 | debug("Setting up addressable devices %p\n", ctrl->dcbaa); |
| 418 | xhci_setup_addressable_virt_dev(ctrl, udev->slot_id, udev->speed, |
| 419 | root_portnr); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 420 | |
| 421 | ctrl_ctx = xhci_get_input_control_ctx(virt_dev->in_ctx); |
| 422 | ctrl_ctx->add_flags = cpu_to_le32(SLOT_FLAG | EP0_FLAG); |
| 423 | ctrl_ctx->drop_flags = 0; |
| 424 | |
| 425 | xhci_queue_command(ctrl, (void *)ctrl_ctx, slot_id, 0, TRB_ADDR_DEV); |
| 426 | event = xhci_wait_for_event(ctrl, TRB_COMPLETION); |
| 427 | BUG_ON(TRB_TO_SLOT_ID(le32_to_cpu(event->event_cmd.flags)) != slot_id); |
| 428 | |
| 429 | switch (GET_COMP_CODE(le32_to_cpu(event->event_cmd.status))) { |
| 430 | case COMP_CTX_STATE: |
| 431 | case COMP_EBADSLT: |
| 432 | printf("Setup ERROR: address device command for slot %d.\n", |
| 433 | slot_id); |
| 434 | ret = -EINVAL; |
| 435 | break; |
| 436 | case COMP_TX_ERR: |
| 437 | puts("Device not responding to set address.\n"); |
| 438 | ret = -EPROTO; |
| 439 | break; |
| 440 | case COMP_DEV_ERR: |
| 441 | puts("ERROR: Incompatible device" |
| 442 | "for address device command.\n"); |
| 443 | ret = -ENODEV; |
| 444 | break; |
| 445 | case COMP_SUCCESS: |
| 446 | debug("Successful Address Device command\n"); |
| 447 | udev->status = 0; |
| 448 | break; |
| 449 | default: |
| 450 | printf("ERROR: unexpected command completion code 0x%x.\n", |
| 451 | GET_COMP_CODE(le32_to_cpu(event->event_cmd.status))); |
| 452 | ret = -EINVAL; |
| 453 | break; |
| 454 | } |
| 455 | |
| 456 | xhci_acknowledge_event(ctrl); |
| 457 | |
| 458 | if (ret < 0) |
| 459 | /* |
| 460 | * TODO: Unsuccessful Address Device command shall leave the |
| 461 | * slot in default state. So, issue Disable Slot command now. |
| 462 | */ |
| 463 | return ret; |
| 464 | |
Sergey Temerkhanov | 3859346 | 2015-04-01 17:18:45 +0300 | [diff] [blame] | 465 | xhci_inval_cache((uintptr_t)virt_dev->out_ctx->bytes, |
| 466 | virt_dev->out_ctx->size); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 467 | slot_ctx = xhci_get_slot_ctx(ctrl, virt_dev->out_ctx); |
| 468 | |
| 469 | debug("xHC internal address is: %d\n", |
| 470 | le32_to_cpu(slot_ctx->dev_state) & DEV_ADDR_MASK); |
| 471 | |
| 472 | return 0; |
| 473 | } |
| 474 | |
| 475 | /** |
| 476 | * Issue Enable slot command to the controller to allocate |
| 477 | * device slot and assign the slot id. It fails if the xHC |
| 478 | * ran out of device slots, the Enable Slot command timed out, |
| 479 | * or allocating memory failed. |
| 480 | * |
| 481 | * @param udev pointer to the Device Data Structure |
| 482 | * @return Returns 0 on succes else return error code on failure |
| 483 | */ |
Simon Glass | 49b4183 | 2015-03-25 12:22:53 -0600 | [diff] [blame] | 484 | int _xhci_alloc_device(struct usb_device *udev) |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 485 | { |
Simon Glass | a49e27b | 2015-03-25 12:22:49 -0600 | [diff] [blame] | 486 | struct xhci_ctrl *ctrl = xhci_get_ctrl(udev); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 487 | union xhci_trb *event; |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 488 | int ret; |
| 489 | |
| 490 | /* |
| 491 | * Root hub will be first device to be initailized. |
| 492 | * If this device is root-hub, don't do any xHC related |
| 493 | * stuff. |
| 494 | */ |
| 495 | if (ctrl->rootdev == 0) { |
| 496 | udev->speed = USB_SPEED_SUPER; |
| 497 | return 0; |
| 498 | } |
| 499 | |
| 500 | xhci_queue_command(ctrl, NULL, 0, 0, TRB_ENABLE_SLOT); |
| 501 | event = xhci_wait_for_event(ctrl, TRB_COMPLETION); |
| 502 | BUG_ON(GET_COMP_CODE(le32_to_cpu(event->event_cmd.status)) |
| 503 | != COMP_SUCCESS); |
| 504 | |
| 505 | udev->slot_id = TRB_TO_SLOT_ID(le32_to_cpu(event->event_cmd.flags)); |
| 506 | |
| 507 | xhci_acknowledge_event(ctrl); |
| 508 | |
Simon Glass | 88a3784 | 2015-03-25 12:22:50 -0600 | [diff] [blame] | 509 | ret = xhci_alloc_virt_device(ctrl, udev->slot_id); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 510 | if (ret < 0) { |
| 511 | /* |
| 512 | * TODO: Unsuccessful Address Device command shall leave |
| 513 | * the slot in default. So, issue Disable Slot command now. |
| 514 | */ |
| 515 | puts("Could not allocate xHCI USB device data structures\n"); |
| 516 | return ret; |
| 517 | } |
| 518 | |
| 519 | return 0; |
| 520 | } |
Simon Glass | 49b4183 | 2015-03-25 12:22:53 -0600 | [diff] [blame] | 521 | |
| 522 | #ifndef CONFIG_DM_USB |
| 523 | int usb_alloc_device(struct usb_device *udev) |
| 524 | { |
| 525 | return _xhci_alloc_device(udev); |
| 526 | } |
| 527 | #endif |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 528 | |
| 529 | /* |
| 530 | * Full speed devices may have a max packet size greater than 8 bytes, but the |
| 531 | * USB core doesn't know that until it reads the first 8 bytes of the |
| 532 | * descriptor. If the usb_device's max packet size changes after that point, |
| 533 | * we need to issue an evaluate context command and wait on it. |
| 534 | * |
| 535 | * @param udev pointer to the Device Data Structure |
| 536 | * @return returns the status of the xhci_configure_endpoints |
| 537 | */ |
| 538 | int xhci_check_maxpacket(struct usb_device *udev) |
| 539 | { |
Simon Glass | a49e27b | 2015-03-25 12:22:49 -0600 | [diff] [blame] | 540 | struct xhci_ctrl *ctrl = xhci_get_ctrl(udev); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 541 | unsigned int slot_id = udev->slot_id; |
| 542 | int ep_index = 0; /* control endpoint */ |
| 543 | struct xhci_container_ctx *in_ctx; |
| 544 | struct xhci_container_ctx *out_ctx; |
| 545 | struct xhci_input_control_ctx *ctrl_ctx; |
| 546 | struct xhci_ep_ctx *ep_ctx; |
| 547 | int max_packet_size; |
| 548 | int hw_max_packet_size; |
| 549 | int ret = 0; |
| 550 | struct usb_interface *ifdesc; |
| 551 | |
| 552 | ifdesc = &udev->config.if_desc[0]; |
| 553 | |
| 554 | out_ctx = ctrl->devs[slot_id]->out_ctx; |
Sergey Temerkhanov | 3859346 | 2015-04-01 17:18:45 +0300 | [diff] [blame] | 555 | xhci_inval_cache((uintptr_t)out_ctx->bytes, out_ctx->size); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 556 | |
| 557 | ep_ctx = xhci_get_ep_ctx(ctrl, out_ctx, ep_index); |
| 558 | hw_max_packet_size = MAX_PACKET_DECODED(le32_to_cpu(ep_ctx->ep_info2)); |
| 559 | max_packet_size = usb_endpoint_maxp(&ifdesc->ep_desc[0]); |
| 560 | if (hw_max_packet_size != max_packet_size) { |
| 561 | debug("Max Packet Size for ep 0 changed.\n"); |
| 562 | debug("Max packet size in usb_device = %d\n", max_packet_size); |
| 563 | debug("Max packet size in xHCI HW = %d\n", hw_max_packet_size); |
| 564 | debug("Issuing evaluate context command.\n"); |
| 565 | |
| 566 | /* Set up the modified control endpoint 0 */ |
| 567 | xhci_endpoint_copy(ctrl, ctrl->devs[slot_id]->in_ctx, |
| 568 | ctrl->devs[slot_id]->out_ctx, ep_index); |
| 569 | in_ctx = ctrl->devs[slot_id]->in_ctx; |
| 570 | ep_ctx = xhci_get_ep_ctx(ctrl, in_ctx, ep_index); |
| 571 | ep_ctx->ep_info2 &= cpu_to_le32(~MAX_PACKET_MASK); |
| 572 | ep_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(max_packet_size)); |
| 573 | |
| 574 | /* |
| 575 | * Set up the input context flags for the command |
| 576 | * FIXME: This won't work if a non-default control endpoint |
| 577 | * changes max packet sizes. |
| 578 | */ |
| 579 | ctrl_ctx = xhci_get_input_control_ctx(in_ctx); |
| 580 | ctrl_ctx->add_flags = cpu_to_le32(EP0_FLAG); |
| 581 | ctrl_ctx->drop_flags = 0; |
| 582 | |
| 583 | ret = xhci_configure_endpoints(udev, true); |
| 584 | } |
| 585 | return ret; |
| 586 | } |
| 587 | |
| 588 | /** |
| 589 | * Clears the Change bits of the Port Status Register |
| 590 | * |
| 591 | * @param wValue request value |
| 592 | * @param wIndex request index |
| 593 | * @param addr address of posrt status register |
| 594 | * @param port_status state of port status register |
| 595 | * @return none |
| 596 | */ |
| 597 | static void xhci_clear_port_change_bit(u16 wValue, |
| 598 | u16 wIndex, volatile uint32_t *addr, u32 port_status) |
| 599 | { |
| 600 | char *port_change_bit; |
| 601 | u32 status; |
| 602 | |
| 603 | switch (wValue) { |
| 604 | case USB_PORT_FEAT_C_RESET: |
| 605 | status = PORT_RC; |
| 606 | port_change_bit = "reset"; |
| 607 | break; |
| 608 | case USB_PORT_FEAT_C_CONNECTION: |
| 609 | status = PORT_CSC; |
| 610 | port_change_bit = "connect"; |
| 611 | break; |
| 612 | case USB_PORT_FEAT_C_OVER_CURRENT: |
| 613 | status = PORT_OCC; |
| 614 | port_change_bit = "over-current"; |
| 615 | break; |
| 616 | case USB_PORT_FEAT_C_ENABLE: |
| 617 | status = PORT_PEC; |
| 618 | port_change_bit = "enable/disable"; |
| 619 | break; |
| 620 | case USB_PORT_FEAT_C_SUSPEND: |
| 621 | status = PORT_PLC; |
| 622 | port_change_bit = "suspend/resume"; |
| 623 | break; |
| 624 | default: |
| 625 | /* Should never happen */ |
| 626 | return; |
| 627 | } |
| 628 | |
| 629 | /* Change bits are all write 1 to clear */ |
| 630 | xhci_writel(addr, port_status | status); |
| 631 | |
| 632 | port_status = xhci_readl(addr); |
| 633 | debug("clear port %s change, actual port %d status = 0x%x\n", |
| 634 | port_change_bit, wIndex, port_status); |
| 635 | } |
| 636 | |
| 637 | /** |
| 638 | * Save Read Only (RO) bits and save read/write bits where |
| 639 | * writing a 0 clears the bit and writing a 1 sets the bit (RWS). |
| 640 | * For all other types (RW1S, RW1CS, RW, and RZ), writing a '0' has no effect. |
| 641 | * |
| 642 | * @param state state of the Port Status and Control Regsiter |
| 643 | * @return a value that would result in the port being in the |
| 644 | * same state, if the value was written to the port |
| 645 | * status control register. |
| 646 | */ |
| 647 | static u32 xhci_port_state_to_neutral(u32 state) |
| 648 | { |
| 649 | /* Save read-only status and port state */ |
| 650 | return (state & XHCI_PORT_RO) | (state & XHCI_PORT_RWS); |
| 651 | } |
| 652 | |
| 653 | /** |
| 654 | * Submits the Requests to the XHCI Host Controller |
| 655 | * |
| 656 | * @param udev pointer to the USB device structure |
| 657 | * @param pipe contains the DIR_IN or OUT , devnum |
| 658 | * @param buffer buffer to be read/written based on the request |
| 659 | * @return returns 0 if successful else -1 on failure |
| 660 | */ |
| 661 | static int xhci_submit_root(struct usb_device *udev, unsigned long pipe, |
| 662 | void *buffer, struct devrequest *req) |
| 663 | { |
| 664 | uint8_t tmpbuf[4]; |
| 665 | u16 typeReq; |
| 666 | void *srcptr = NULL; |
| 667 | int len, srclen; |
| 668 | uint32_t reg; |
| 669 | volatile uint32_t *status_reg; |
Simon Glass | a49e27b | 2015-03-25 12:22:49 -0600 | [diff] [blame] | 670 | struct xhci_ctrl *ctrl = xhci_get_ctrl(udev); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 671 | struct xhci_hcor *hcor = ctrl->hcor; |
| 672 | |
Jeroen Hofstee | b351e46 | 2014-06-12 00:31:27 +0200 | [diff] [blame] | 673 | if ((req->requesttype & USB_RT_PORT) && |
| 674 | le16_to_cpu(req->index) > CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS) { |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 675 | printf("The request port(%d) is not configured\n", |
| 676 | le16_to_cpu(req->index) - 1); |
| 677 | return -EINVAL; |
| 678 | } |
| 679 | |
| 680 | status_reg = (volatile uint32_t *) |
| 681 | (&hcor->portregs[le16_to_cpu(req->index) - 1].or_portsc); |
| 682 | srclen = 0; |
| 683 | |
| 684 | typeReq = req->request | req->requesttype << 8; |
| 685 | |
| 686 | switch (typeReq) { |
| 687 | case DeviceRequest | USB_REQ_GET_DESCRIPTOR: |
| 688 | switch (le16_to_cpu(req->value) >> 8) { |
| 689 | case USB_DT_DEVICE: |
| 690 | debug("USB_DT_DEVICE request\n"); |
| 691 | srcptr = &descriptor.device; |
| 692 | srclen = 0x12; |
| 693 | break; |
| 694 | case USB_DT_CONFIG: |
| 695 | debug("USB_DT_CONFIG config\n"); |
| 696 | srcptr = &descriptor.config; |
| 697 | srclen = 0x19; |
| 698 | break; |
| 699 | case USB_DT_STRING: |
| 700 | debug("USB_DT_STRING config\n"); |
| 701 | switch (le16_to_cpu(req->value) & 0xff) { |
| 702 | case 0: /* Language */ |
| 703 | srcptr = "\4\3\11\4"; |
| 704 | srclen = 4; |
| 705 | break; |
| 706 | case 1: /* Vendor String */ |
Simon Glass | b113f6e | 2015-03-25 12:22:54 -0600 | [diff] [blame] | 707 | srcptr = "\16\3U\0-\0B\0o\0o\0t\0"; |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 708 | srclen = 14; |
| 709 | break; |
| 710 | case 2: /* Product Name */ |
| 711 | srcptr = "\52\3X\0H\0C\0I\0 " |
| 712 | "\0H\0o\0s\0t\0 " |
| 713 | "\0C\0o\0n\0t\0r\0o\0l\0l\0e\0r\0"; |
| 714 | srclen = 42; |
| 715 | break; |
| 716 | default: |
| 717 | printf("unknown value DT_STRING %x\n", |
| 718 | le16_to_cpu(req->value)); |
| 719 | goto unknown; |
| 720 | } |
| 721 | break; |
| 722 | default: |
| 723 | printf("unknown value %x\n", le16_to_cpu(req->value)); |
| 724 | goto unknown; |
| 725 | } |
| 726 | break; |
| 727 | case USB_REQ_GET_DESCRIPTOR | ((USB_DIR_IN | USB_RT_HUB) << 8): |
| 728 | switch (le16_to_cpu(req->value) >> 8) { |
| 729 | case USB_DT_HUB: |
| 730 | debug("USB_DT_HUB config\n"); |
| 731 | srcptr = &descriptor.hub; |
| 732 | srclen = 0x8; |
| 733 | break; |
| 734 | default: |
| 735 | printf("unknown value %x\n", le16_to_cpu(req->value)); |
| 736 | goto unknown; |
| 737 | } |
| 738 | break; |
| 739 | case USB_REQ_SET_ADDRESS | (USB_RECIP_DEVICE << 8): |
| 740 | debug("USB_REQ_SET_ADDRESS\n"); |
| 741 | ctrl->rootdev = le16_to_cpu(req->value); |
| 742 | break; |
| 743 | case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: |
| 744 | /* Do nothing */ |
| 745 | break; |
| 746 | case USB_REQ_GET_STATUS | ((USB_DIR_IN | USB_RT_HUB) << 8): |
| 747 | tmpbuf[0] = 1; /* USB_STATUS_SELFPOWERED */ |
| 748 | tmpbuf[1] = 0; |
| 749 | srcptr = tmpbuf; |
| 750 | srclen = 2; |
| 751 | break; |
| 752 | case USB_REQ_GET_STATUS | ((USB_RT_PORT | USB_DIR_IN) << 8): |
| 753 | memset(tmpbuf, 0, 4); |
| 754 | reg = xhci_readl(status_reg); |
| 755 | if (reg & PORT_CONNECT) { |
| 756 | tmpbuf[0] |= USB_PORT_STAT_CONNECTION; |
| 757 | switch (reg & DEV_SPEED_MASK) { |
| 758 | case XDEV_FS: |
| 759 | debug("SPEED = FULLSPEED\n"); |
| 760 | break; |
| 761 | case XDEV_LS: |
| 762 | debug("SPEED = LOWSPEED\n"); |
| 763 | tmpbuf[1] |= USB_PORT_STAT_LOW_SPEED >> 8; |
| 764 | break; |
| 765 | case XDEV_HS: |
| 766 | debug("SPEED = HIGHSPEED\n"); |
| 767 | tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8; |
| 768 | break; |
| 769 | case XDEV_SS: |
| 770 | debug("SPEED = SUPERSPEED\n"); |
| 771 | tmpbuf[1] |= USB_PORT_STAT_SUPER_SPEED >> 8; |
| 772 | break; |
| 773 | } |
| 774 | } |
| 775 | if (reg & PORT_PE) |
| 776 | tmpbuf[0] |= USB_PORT_STAT_ENABLE; |
| 777 | if ((reg & PORT_PLS_MASK) == XDEV_U3) |
| 778 | tmpbuf[0] |= USB_PORT_STAT_SUSPEND; |
| 779 | if (reg & PORT_OC) |
| 780 | tmpbuf[0] |= USB_PORT_STAT_OVERCURRENT; |
| 781 | if (reg & PORT_RESET) |
| 782 | tmpbuf[0] |= USB_PORT_STAT_RESET; |
| 783 | if (reg & PORT_POWER) |
| 784 | /* |
| 785 | * XXX: This Port power bit (for USB 3.0 hub) |
| 786 | * we are faking in USB 2.0 hub port status; |
| 787 | * since there's a change in bit positions in |
| 788 | * two: |
| 789 | * USB 2.0 port status PP is at position[8] |
| 790 | * USB 3.0 port status PP is at position[9] |
| 791 | * So, we are still keeping it at position [8] |
| 792 | */ |
| 793 | tmpbuf[1] |= USB_PORT_STAT_POWER >> 8; |
| 794 | if (reg & PORT_CSC) |
| 795 | tmpbuf[2] |= USB_PORT_STAT_C_CONNECTION; |
| 796 | if (reg & PORT_PEC) |
| 797 | tmpbuf[2] |= USB_PORT_STAT_C_ENABLE; |
| 798 | if (reg & PORT_OCC) |
| 799 | tmpbuf[2] |= USB_PORT_STAT_C_OVERCURRENT; |
| 800 | if (reg & PORT_RC) |
| 801 | tmpbuf[2] |= USB_PORT_STAT_C_RESET; |
| 802 | |
| 803 | srcptr = tmpbuf; |
| 804 | srclen = 4; |
| 805 | break; |
| 806 | case USB_REQ_SET_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8): |
| 807 | reg = xhci_readl(status_reg); |
| 808 | reg = xhci_port_state_to_neutral(reg); |
| 809 | switch (le16_to_cpu(req->value)) { |
| 810 | case USB_PORT_FEAT_ENABLE: |
| 811 | reg |= PORT_PE; |
| 812 | xhci_writel(status_reg, reg); |
| 813 | break; |
| 814 | case USB_PORT_FEAT_POWER: |
| 815 | reg |= PORT_POWER; |
| 816 | xhci_writel(status_reg, reg); |
| 817 | break; |
| 818 | case USB_PORT_FEAT_RESET: |
| 819 | reg |= PORT_RESET; |
| 820 | xhci_writel(status_reg, reg); |
| 821 | break; |
| 822 | default: |
| 823 | printf("unknown feature %x\n", le16_to_cpu(req->value)); |
| 824 | goto unknown; |
| 825 | } |
| 826 | break; |
| 827 | case USB_REQ_CLEAR_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8): |
| 828 | reg = xhci_readl(status_reg); |
| 829 | reg = xhci_port_state_to_neutral(reg); |
| 830 | switch (le16_to_cpu(req->value)) { |
| 831 | case USB_PORT_FEAT_ENABLE: |
| 832 | reg &= ~PORT_PE; |
| 833 | break; |
| 834 | case USB_PORT_FEAT_POWER: |
| 835 | reg &= ~PORT_POWER; |
| 836 | break; |
| 837 | case USB_PORT_FEAT_C_RESET: |
| 838 | case USB_PORT_FEAT_C_CONNECTION: |
| 839 | case USB_PORT_FEAT_C_OVER_CURRENT: |
| 840 | case USB_PORT_FEAT_C_ENABLE: |
| 841 | xhci_clear_port_change_bit((le16_to_cpu(req->value)), |
| 842 | le16_to_cpu(req->index), |
| 843 | status_reg, reg); |
| 844 | break; |
| 845 | default: |
| 846 | printf("unknown feature %x\n", le16_to_cpu(req->value)); |
| 847 | goto unknown; |
| 848 | } |
| 849 | xhci_writel(status_reg, reg); |
| 850 | break; |
| 851 | default: |
| 852 | puts("Unknown request\n"); |
| 853 | goto unknown; |
| 854 | } |
| 855 | |
| 856 | debug("scrlen = %d\n req->length = %d\n", |
| 857 | srclen, le16_to_cpu(req->length)); |
| 858 | |
Masahiro Yamada | db20464 | 2014-11-07 03:03:31 +0900 | [diff] [blame] | 859 | len = min(srclen, (int)le16_to_cpu(req->length)); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 860 | |
| 861 | if (srcptr != NULL && len > 0) |
| 862 | memcpy(buffer, srcptr, len); |
| 863 | else |
| 864 | debug("Len is 0\n"); |
| 865 | |
| 866 | udev->act_len = len; |
| 867 | udev->status = 0; |
| 868 | |
| 869 | return 0; |
| 870 | |
| 871 | unknown: |
| 872 | udev->act_len = 0; |
| 873 | udev->status = USB_ST_STALLED; |
| 874 | |
| 875 | return -ENODEV; |
| 876 | } |
| 877 | |
| 878 | /** |
| 879 | * Submits the INT request to XHCI Host cotroller |
| 880 | * |
| 881 | * @param udev pointer to the USB device |
| 882 | * @param pipe contains the DIR_IN or OUT , devnum |
| 883 | * @param buffer buffer to be read/written based on the request |
| 884 | * @param length length of the buffer |
| 885 | * @param interval interval of the interrupt |
| 886 | * @return 0 |
| 887 | */ |
Simon Glass | 49b4183 | 2015-03-25 12:22:53 -0600 | [diff] [blame] | 888 | static int _xhci_submit_int_msg(struct usb_device *udev, unsigned long pipe, |
| 889 | void *buffer, int length, int interval) |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 890 | { |
| 891 | /* |
| 892 | * TODO: Not addressing any interrupt type transfer requests |
| 893 | * Add support for it later. |
| 894 | */ |
| 895 | return -EINVAL; |
| 896 | } |
| 897 | |
| 898 | /** |
| 899 | * submit the BULK type of request to the USB Device |
| 900 | * |
| 901 | * @param udev pointer to the USB device |
| 902 | * @param pipe contains the DIR_IN or OUT , devnum |
| 903 | * @param buffer buffer to be read/written based on the request |
| 904 | * @param length length of the buffer |
| 905 | * @return returns 0 if successful else -1 on failure |
| 906 | */ |
Simon Glass | 49b4183 | 2015-03-25 12:22:53 -0600 | [diff] [blame] | 907 | static int _xhci_submit_bulk_msg(struct usb_device *udev, unsigned long pipe, |
| 908 | void *buffer, int length) |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 909 | { |
| 910 | if (usb_pipetype(pipe) != PIPE_BULK) { |
| 911 | printf("non-bulk pipe (type=%lu)", usb_pipetype(pipe)); |
| 912 | return -EINVAL; |
| 913 | } |
| 914 | |
| 915 | return xhci_bulk_tx(udev, pipe, length, buffer); |
| 916 | } |
| 917 | |
| 918 | /** |
| 919 | * submit the control type of request to the Root hub/Device based on the devnum |
| 920 | * |
| 921 | * @param udev pointer to the USB device |
| 922 | * @param pipe contains the DIR_IN or OUT , devnum |
| 923 | * @param buffer buffer to be read/written based on the request |
| 924 | * @param length length of the buffer |
| 925 | * @param setup Request type |
Simon Glass | 4ec422c | 2015-03-25 12:22:51 -0600 | [diff] [blame] | 926 | * @param root_portnr Root port number that this device is on |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 927 | * @return returns 0 if successful else -1 on failure |
| 928 | */ |
Simon Glass | 4ec422c | 2015-03-25 12:22:51 -0600 | [diff] [blame] | 929 | static int _xhci_submit_control_msg(struct usb_device *udev, unsigned long pipe, |
| 930 | void *buffer, int length, |
| 931 | struct devrequest *setup, int root_portnr) |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 932 | { |
Simon Glass | a49e27b | 2015-03-25 12:22:49 -0600 | [diff] [blame] | 933 | struct xhci_ctrl *ctrl = xhci_get_ctrl(udev); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 934 | int ret = 0; |
| 935 | |
| 936 | if (usb_pipetype(pipe) != PIPE_CONTROL) { |
| 937 | printf("non-control pipe (type=%lu)", usb_pipetype(pipe)); |
| 938 | return -EINVAL; |
| 939 | } |
| 940 | |
| 941 | if (usb_pipedevice(pipe) == ctrl->rootdev) |
| 942 | return xhci_submit_root(udev, pipe, buffer, setup); |
| 943 | |
Ted Chen | a2f4f9a | 2016-03-18 17:56:52 +1030 | [diff] [blame] | 944 | if (setup->request == USB_REQ_SET_ADDRESS && |
| 945 | (setup->requesttype & USB_TYPE_MASK) == USB_TYPE_STANDARD) |
Simon Glass | 4ec422c | 2015-03-25 12:22:51 -0600 | [diff] [blame] | 946 | return xhci_address_device(udev, root_portnr); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 947 | |
Ted Chen | a2f4f9a | 2016-03-18 17:56:52 +1030 | [diff] [blame] | 948 | if (setup->request == USB_REQ_SET_CONFIGURATION && |
| 949 | (setup->requesttype & USB_TYPE_MASK) == USB_TYPE_STANDARD) { |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 950 | ret = xhci_set_configuration(udev); |
| 951 | if (ret) { |
| 952 | puts("Failed to configure xHCI endpoint\n"); |
| 953 | return ret; |
| 954 | } |
| 955 | } |
| 956 | |
| 957 | return xhci_ctrl_tx(udev, pipe, setup, length, buffer); |
| 958 | } |
| 959 | |
Simon Glass | 686a812 | 2015-03-25 12:22:52 -0600 | [diff] [blame] | 960 | static int xhci_lowlevel_init(struct xhci_ctrl *ctrl) |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 961 | { |
Simon Glass | 686a812 | 2015-03-25 12:22:52 -0600 | [diff] [blame] | 962 | struct xhci_hccr *hccr; |
| 963 | struct xhci_hcor *hcor; |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 964 | uint32_t val; |
| 965 | uint32_t val2; |
| 966 | uint32_t reg; |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 967 | |
Simon Glass | 686a812 | 2015-03-25 12:22:52 -0600 | [diff] [blame] | 968 | hccr = ctrl->hccr; |
| 969 | hcor = ctrl->hcor; |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 970 | /* |
| 971 | * Program the Number of Device Slots Enabled field in the CONFIG |
| 972 | * register with the max value of slots the HC can handle. |
| 973 | */ |
| 974 | val = (xhci_readl(&hccr->cr_hcsparams1) & HCS_SLOTS_MASK); |
| 975 | val2 = xhci_readl(&hcor->or_config); |
| 976 | val |= (val2 & ~HCS_SLOTS_MASK); |
| 977 | xhci_writel(&hcor->or_config, val); |
| 978 | |
| 979 | /* initializing xhci data structures */ |
| 980 | if (xhci_mem_init(ctrl, hccr, hcor) < 0) |
| 981 | return -ENOMEM; |
| 982 | |
| 983 | reg = xhci_readl(&hccr->cr_hcsparams1); |
| 984 | descriptor.hub.bNbrPorts = ((reg & HCS_MAX_PORTS_MASK) >> |
| 985 | HCS_MAX_PORTS_SHIFT); |
| 986 | printf("Register %x NbrPorts %d\n", reg, descriptor.hub.bNbrPorts); |
| 987 | |
| 988 | /* Port Indicators */ |
| 989 | reg = xhci_readl(&hccr->cr_hccparams); |
| 990 | if (HCS_INDICATOR(reg)) |
| 991 | put_unaligned(get_unaligned(&descriptor.hub.wHubCharacteristics) |
| 992 | | 0x80, &descriptor.hub.wHubCharacteristics); |
| 993 | |
| 994 | /* Port Power Control */ |
| 995 | if (HCC_PPC(reg)) |
| 996 | put_unaligned(get_unaligned(&descriptor.hub.wHubCharacteristics) |
| 997 | | 0x01, &descriptor.hub.wHubCharacteristics); |
| 998 | |
| 999 | if (xhci_start(hcor)) { |
| 1000 | xhci_reset(hcor); |
| 1001 | return -ENODEV; |
| 1002 | } |
| 1003 | |
| 1004 | /* Zero'ing IRQ control register and IRQ pending register */ |
| 1005 | xhci_writel(&ctrl->ir_set->irq_control, 0x0); |
| 1006 | xhci_writel(&ctrl->ir_set->irq_pending, 0x0); |
| 1007 | |
| 1008 | reg = HC_VERSION(xhci_readl(&hccr->cr_capbase)); |
| 1009 | printf("USB XHCI %x.%02x\n", reg >> 8, reg & 0xff); |
| 1010 | |
Simon Glass | 686a812 | 2015-03-25 12:22:52 -0600 | [diff] [blame] | 1011 | return 0; |
| 1012 | } |
| 1013 | |
| 1014 | static int xhci_lowlevel_stop(struct xhci_ctrl *ctrl) |
| 1015 | { |
| 1016 | u32 temp; |
| 1017 | |
| 1018 | xhci_reset(ctrl->hcor); |
| 1019 | |
| 1020 | debug("// Disabling event ring interrupts\n"); |
| 1021 | temp = xhci_readl(&ctrl->hcor->or_usbsts); |
| 1022 | xhci_writel(&ctrl->hcor->or_usbsts, temp & ~STS_EINT); |
| 1023 | temp = xhci_readl(&ctrl->ir_set->irq_pending); |
| 1024 | xhci_writel(&ctrl->ir_set->irq_pending, ER_IRQ_DISABLE(temp)); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 1025 | |
| 1026 | return 0; |
| 1027 | } |
| 1028 | |
Simon Glass | 49b4183 | 2015-03-25 12:22:53 -0600 | [diff] [blame] | 1029 | #ifndef CONFIG_DM_USB |
Simon Glass | 4ec422c | 2015-03-25 12:22:51 -0600 | [diff] [blame] | 1030 | int submit_control_msg(struct usb_device *udev, unsigned long pipe, |
| 1031 | void *buffer, int length, struct devrequest *setup) |
| 1032 | { |
| 1033 | struct usb_device *hop = udev; |
| 1034 | |
| 1035 | if (hop->parent) |
| 1036 | while (hop->parent->parent) |
| 1037 | hop = hop->parent; |
| 1038 | |
| 1039 | return _xhci_submit_control_msg(udev, pipe, buffer, length, setup, |
| 1040 | hop->portnr); |
| 1041 | } |
| 1042 | |
Simon Glass | 49b4183 | 2015-03-25 12:22:53 -0600 | [diff] [blame] | 1043 | int submit_bulk_msg(struct usb_device *udev, unsigned long pipe, void *buffer, |
| 1044 | int length) |
| 1045 | { |
| 1046 | return _xhci_submit_bulk_msg(udev, pipe, buffer, length); |
| 1047 | } |
| 1048 | |
| 1049 | int submit_int_msg(struct usb_device *udev, unsigned long pipe, void *buffer, |
| 1050 | int length, int interval) |
| 1051 | { |
| 1052 | return _xhci_submit_int_msg(udev, pipe, buffer, length, interval); |
| 1053 | } |
| 1054 | |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 1055 | /** |
Simon Glass | 686a812 | 2015-03-25 12:22:52 -0600 | [diff] [blame] | 1056 | * Intialises the XHCI host controller |
| 1057 | * and allocates the necessary data structures |
| 1058 | * |
| 1059 | * @param index index to the host controller data structure |
| 1060 | * @return pointer to the intialised controller |
| 1061 | */ |
| 1062 | int usb_lowlevel_init(int index, enum usb_init_type init, void **controller) |
| 1063 | { |
| 1064 | struct xhci_hccr *hccr; |
| 1065 | struct xhci_hcor *hcor; |
| 1066 | struct xhci_ctrl *ctrl; |
| 1067 | int ret; |
| 1068 | |
Sergey Temerkhanov | 65bb454 | 2015-08-17 15:38:07 +0300 | [diff] [blame] | 1069 | *controller = NULL; |
| 1070 | |
Simon Glass | 686a812 | 2015-03-25 12:22:52 -0600 | [diff] [blame] | 1071 | if (xhci_hcd_init(index, &hccr, (struct xhci_hcor **)&hcor) != 0) |
| 1072 | return -ENODEV; |
| 1073 | |
| 1074 | if (xhci_reset(hcor) != 0) |
| 1075 | return -ENODEV; |
| 1076 | |
| 1077 | ctrl = &xhcic[index]; |
| 1078 | |
| 1079 | ctrl->hccr = hccr; |
| 1080 | ctrl->hcor = hcor; |
| 1081 | |
| 1082 | ret = xhci_lowlevel_init(ctrl); |
| 1083 | |
Sergey Temerkhanov | 65bb454 | 2015-08-17 15:38:07 +0300 | [diff] [blame] | 1084 | if (ret) { |
| 1085 | ctrl->hccr = NULL; |
| 1086 | ctrl->hcor = NULL; |
| 1087 | } else { |
| 1088 | *controller = &xhcic[index]; |
| 1089 | } |
Simon Glass | 686a812 | 2015-03-25 12:22:52 -0600 | [diff] [blame] | 1090 | |
| 1091 | return ret; |
| 1092 | } |
| 1093 | |
| 1094 | /** |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 1095 | * Stops the XHCI host controller |
| 1096 | * and cleans up all the related data structures |
| 1097 | * |
| 1098 | * @param index index to the host controller data structure |
| 1099 | * @return none |
| 1100 | */ |
| 1101 | int usb_lowlevel_stop(int index) |
| 1102 | { |
| 1103 | struct xhci_ctrl *ctrl = (xhcic + index); |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 1104 | |
Sergey Temerkhanov | 65bb454 | 2015-08-17 15:38:07 +0300 | [diff] [blame] | 1105 | if (ctrl->hcor) { |
| 1106 | xhci_lowlevel_stop(ctrl); |
| 1107 | xhci_hcd_stop(index); |
| 1108 | xhci_cleanup(ctrl); |
| 1109 | } |
Vivek Gautam | 4912dcc | 2013-09-14 14:02:45 +0530 | [diff] [blame] | 1110 | |
| 1111 | return 0; |
| 1112 | } |
Simon Glass | 49b4183 | 2015-03-25 12:22:53 -0600 | [diff] [blame] | 1113 | #endif /* CONFIG_DM_USB */ |
| 1114 | |
| 1115 | #ifdef CONFIG_DM_USB |
| 1116 | /* |
| 1117 | static struct usb_device *get_usb_device(struct udevice *dev) |
| 1118 | { |
| 1119 | struct usb_device *udev; |
| 1120 | |
| 1121 | if (device_get_uclass_id(dev) == UCLASS_USB) |
| 1122 | udev = dev_get_uclass_priv(dev); |
| 1123 | else |
Simon Glass | de44acf | 2015-09-28 23:32:01 -0600 | [diff] [blame] | 1124 | udev = dev_get_parent_priv(dev); |
Simon Glass | 49b4183 | 2015-03-25 12:22:53 -0600 | [diff] [blame] | 1125 | |
| 1126 | return udev; |
| 1127 | } |
| 1128 | */ |
| 1129 | static bool is_root_hub(struct udevice *dev) |
| 1130 | { |
| 1131 | if (device_get_uclass_id(dev->parent) != UCLASS_USB_HUB) |
| 1132 | return true; |
| 1133 | |
| 1134 | return false; |
| 1135 | } |
| 1136 | |
| 1137 | static int xhci_submit_control_msg(struct udevice *dev, struct usb_device *udev, |
| 1138 | unsigned long pipe, void *buffer, int length, |
| 1139 | struct devrequest *setup) |
| 1140 | { |
| 1141 | struct usb_device *uhop; |
| 1142 | struct udevice *hub; |
| 1143 | int root_portnr = 0; |
| 1144 | |
| 1145 | debug("%s: dev='%s', udev=%p, udev->dev='%s', portnr=%d\n", __func__, |
| 1146 | dev->name, udev, udev->dev->name, udev->portnr); |
| 1147 | hub = udev->dev; |
| 1148 | if (device_get_uclass_id(hub) == UCLASS_USB_HUB) { |
| 1149 | /* Figure out our port number on the root hub */ |
| 1150 | if (is_root_hub(hub)) { |
| 1151 | root_portnr = udev->portnr; |
| 1152 | } else { |
| 1153 | while (!is_root_hub(hub->parent)) |
| 1154 | hub = hub->parent; |
Simon Glass | de44acf | 2015-09-28 23:32:01 -0600 | [diff] [blame] | 1155 | uhop = dev_get_parent_priv(hub); |
Simon Glass | 49b4183 | 2015-03-25 12:22:53 -0600 | [diff] [blame] | 1156 | root_portnr = uhop->portnr; |
| 1157 | } |
| 1158 | } |
| 1159 | /* |
| 1160 | struct usb_device *hop = udev; |
| 1161 | |
| 1162 | if (hop->parent) |
| 1163 | while (hop->parent->parent) |
| 1164 | hop = hop->parent; |
| 1165 | */ |
| 1166 | return _xhci_submit_control_msg(udev, pipe, buffer, length, setup, |
| 1167 | root_portnr); |
| 1168 | } |
| 1169 | |
| 1170 | static int xhci_submit_bulk_msg(struct udevice *dev, struct usb_device *udev, |
| 1171 | unsigned long pipe, void *buffer, int length) |
| 1172 | { |
| 1173 | debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev); |
| 1174 | return _xhci_submit_bulk_msg(udev, pipe, buffer, length); |
| 1175 | } |
| 1176 | |
| 1177 | static int xhci_submit_int_msg(struct udevice *dev, struct usb_device *udev, |
| 1178 | unsigned long pipe, void *buffer, int length, |
| 1179 | int interval) |
| 1180 | { |
| 1181 | debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev); |
| 1182 | return _xhci_submit_int_msg(udev, pipe, buffer, length, interval); |
| 1183 | } |
| 1184 | |
| 1185 | static int xhci_alloc_device(struct udevice *dev, struct usb_device *udev) |
| 1186 | { |
| 1187 | debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev); |
| 1188 | return _xhci_alloc_device(udev); |
| 1189 | } |
| 1190 | |
| 1191 | int xhci_register(struct udevice *dev, struct xhci_hccr *hccr, |
| 1192 | struct xhci_hcor *hcor) |
| 1193 | { |
| 1194 | struct xhci_ctrl *ctrl = dev_get_priv(dev); |
| 1195 | struct usb_bus_priv *priv = dev_get_uclass_priv(dev); |
| 1196 | int ret; |
| 1197 | |
| 1198 | debug("%s: dev='%s', ctrl=%p, hccr=%p, hcor=%p\n", __func__, dev->name, |
| 1199 | ctrl, hccr, hcor); |
| 1200 | |
| 1201 | ctrl->dev = dev; |
| 1202 | |
| 1203 | /* |
| 1204 | * XHCI needs to issue a Address device command to setup |
| 1205 | * proper device context structures, before it can interact |
| 1206 | * with the device. So a get_descriptor will fail before any |
| 1207 | * of that is done for XHCI unlike EHCI. |
| 1208 | */ |
| 1209 | priv->desc_before_addr = false; |
| 1210 | |
| 1211 | ret = xhci_reset(hcor); |
| 1212 | if (ret) |
| 1213 | goto err; |
| 1214 | |
| 1215 | ctrl->hccr = hccr; |
| 1216 | ctrl->hcor = hcor; |
| 1217 | ret = xhci_lowlevel_init(ctrl); |
| 1218 | if (ret) |
| 1219 | goto err; |
| 1220 | |
| 1221 | return 0; |
| 1222 | err: |
| 1223 | free(ctrl); |
| 1224 | debug("%s: failed, ret=%d\n", __func__, ret); |
| 1225 | return ret; |
| 1226 | } |
| 1227 | |
| 1228 | int xhci_deregister(struct udevice *dev) |
| 1229 | { |
| 1230 | struct xhci_ctrl *ctrl = dev_get_priv(dev); |
| 1231 | |
| 1232 | xhci_lowlevel_stop(ctrl); |
| 1233 | xhci_cleanup(ctrl); |
| 1234 | |
| 1235 | return 0; |
| 1236 | } |
| 1237 | |
| 1238 | struct dm_usb_ops xhci_usb_ops = { |
| 1239 | .control = xhci_submit_control_msg, |
| 1240 | .bulk = xhci_submit_bulk_msg, |
| 1241 | .interrupt = xhci_submit_int_msg, |
| 1242 | .alloc_device = xhci_alloc_device, |
| 1243 | }; |
| 1244 | |
| 1245 | #endif |