Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1 | /** |
| 2 | * ep0.c - DesignWare USB3 DRD Controller Endpoint 0 Handling |
| 3 | * |
| 4 | * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 5 | * |
| 6 | * Authors: Felipe Balbi <balbi@ti.com>, |
| 7 | * Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| 8 | * |
Felipe Balbi | 5945f78 | 2013-06-30 14:15:11 +0300 | [diff] [blame] | 9 | * This program is free software: you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 of |
| 11 | * the License as published by the Free Software Foundation. |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 12 | * |
Felipe Balbi | 5945f78 | 2013-06-30 14:15:11 +0300 | [diff] [blame] | 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 17 | */ |
| 18 | |
| 19 | #include <linux/kernel.h> |
| 20 | #include <linux/slab.h> |
| 21 | #include <linux/spinlock.h> |
| 22 | #include <linux/platform_device.h> |
| 23 | #include <linux/pm_runtime.h> |
| 24 | #include <linux/interrupt.h> |
| 25 | #include <linux/io.h> |
| 26 | #include <linux/list.h> |
| 27 | #include <linux/dma-mapping.h> |
| 28 | |
| 29 | #include <linux/usb/ch9.h> |
| 30 | #include <linux/usb/gadget.h> |
Sebastian Andrzej Siewior | 5bdb1dcc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 31 | #include <linux/usb/composite.h> |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 32 | |
| 33 | #include "core.h" |
| 34 | #include "gadget.h" |
| 35 | #include "io.h" |
| 36 | |
Felipe Balbi | 788a23f | 2012-05-21 14:22:41 +0300 | [diff] [blame] | 37 | static void __dwc3_ep0_do_control_status(struct dwc3 *dwc, struct dwc3_ep *dep); |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 38 | static void __dwc3_ep0_do_control_data(struct dwc3 *dwc, |
| 39 | struct dwc3_ep *dep, struct dwc3_request *req); |
Sebastian Andrzej Siewior | 5bdb1dcc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 40 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 41 | static const char *dwc3_ep0_state_string(enum dwc3_ep0_state state) |
| 42 | { |
| 43 | switch (state) { |
| 44 | case EP0_UNCONNECTED: |
| 45 | return "Unconnected"; |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 46 | case EP0_SETUP_PHASE: |
| 47 | return "Setup Phase"; |
| 48 | case EP0_DATA_PHASE: |
| 49 | return "Data Phase"; |
| 50 | case EP0_STATUS_PHASE: |
| 51 | return "Status Phase"; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 52 | default: |
| 53 | return "UNKNOWN"; |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma, |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 58 | u32 len, u32 type) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 59 | { |
| 60 | struct dwc3_gadget_ep_cmd_params params; |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 61 | struct dwc3_trb *trb; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 62 | struct dwc3_ep *dep; |
| 63 | |
| 64 | int ret; |
| 65 | |
| 66 | dep = dwc->eps[epnum]; |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 67 | if (dep->flags & DWC3_EP_BUSY) { |
| 68 | dev_vdbg(dwc->dev, "%s: still busy\n", dep->name); |
| 69 | return 0; |
| 70 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 71 | |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 72 | trb = dwc->ep0_trb; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 73 | |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 74 | trb->bpl = lower_32_bits(buf_dma); |
| 75 | trb->bph = upper_32_bits(buf_dma); |
| 76 | trb->size = len; |
| 77 | trb->ctrl = type; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 78 | |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 79 | trb->ctrl |= (DWC3_TRB_CTRL_HWO |
| 80 | | DWC3_TRB_CTRL_LST |
| 81 | | DWC3_TRB_CTRL_IOC |
| 82 | | DWC3_TRB_CTRL_ISP_IMI); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 83 | |
| 84 | memset(¶ms, 0, sizeof(params)); |
Felipe Balbi | dc1c70a | 2011-09-30 10:58:51 +0300 | [diff] [blame] | 85 | params.param0 = upper_32_bits(dwc->ep0_trb_addr); |
| 86 | params.param1 = lower_32_bits(dwc->ep0_trb_addr); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 87 | |
| 88 | ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, |
| 89 | DWC3_DEPCMD_STARTTRANSFER, ¶ms); |
| 90 | if (ret < 0) { |
| 91 | dev_dbg(dwc->dev, "failed to send STARTTRANSFER command\n"); |
| 92 | return ret; |
| 93 | } |
| 94 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 95 | dep->flags |= DWC3_EP_BUSY; |
Felipe Balbi | b4996a8 | 2012-06-06 12:04:13 +0300 | [diff] [blame] | 96 | dep->resource_index = dwc3_gadget_ep_get_transfer_index(dwc, |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 97 | dep->number); |
| 98 | |
Felipe Balbi | 1ddcb21 | 2011-08-30 15:52:17 +0300 | [diff] [blame] | 99 | dwc->ep0_next_event = DWC3_EP0_COMPLETE; |
| 100 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 101 | return 0; |
| 102 | } |
| 103 | |
| 104 | static int __dwc3_gadget_ep0_queue(struct dwc3_ep *dep, |
| 105 | struct dwc3_request *req) |
| 106 | { |
Sebastian Andrzej Siewior | 5bdb1dcc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 107 | struct dwc3 *dwc = dep->dwc; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 108 | |
| 109 | req->request.actual = 0; |
| 110 | req->request.status = -EINPROGRESS; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 111 | req->epnum = dep->number; |
| 112 | |
| 113 | list_add_tail(&req->list, &dep->request_list); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 114 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 115 | /* |
| 116 | * Gadget driver might not be quick enough to queue a request |
| 117 | * before we get a Transfer Not Ready event on this endpoint. |
| 118 | * |
| 119 | * In that case, we will set DWC3_EP_PENDING_REQUEST. When that |
| 120 | * flag is set, it's telling us that as soon as Gadget queues the |
| 121 | * required request, we should kick the transfer here because the |
| 122 | * IRQ we were waiting for is long gone. |
| 123 | */ |
| 124 | if (dep->flags & DWC3_EP_PENDING_REQUEST) { |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 125 | unsigned direction; |
Felipe Balbi | a682970 | 2011-08-27 22:18:09 +0300 | [diff] [blame] | 126 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 127 | direction = !!(dep->flags & DWC3_EP0_DIR_IN); |
Felipe Balbi | a682970 | 2011-08-27 22:18:09 +0300 | [diff] [blame] | 128 | |
Felipe Balbi | 68d8a78 | 2011-12-29 06:32:29 +0200 | [diff] [blame] | 129 | if (dwc->ep0state != EP0_DATA_PHASE) { |
| 130 | dev_WARN(dwc->dev, "Unexpected pending request\n"); |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 131 | return 0; |
| 132 | } |
Felipe Balbi | a682970 | 2011-08-27 22:18:09 +0300 | [diff] [blame] | 133 | |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 134 | __dwc3_ep0_do_control_data(dwc, dwc->eps[direction], req); |
| 135 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 136 | dep->flags &= ~(DWC3_EP_PENDING_REQUEST | |
| 137 | DWC3_EP0_DIR_IN); |
Felipe Balbi | d9b33c6 | 2012-07-19 08:51:13 +0300 | [diff] [blame] | 138 | |
| 139 | return 0; |
| 140 | } |
| 141 | |
| 142 | /* |
| 143 | * In case gadget driver asked us to delay the STATUS phase, |
| 144 | * handle it here. |
| 145 | */ |
| 146 | if (dwc->delayed_status) { |
Felipe Balbi | 7125d58 | 2012-07-19 21:05:08 +0300 | [diff] [blame] | 147 | unsigned direction; |
| 148 | |
| 149 | direction = !dwc->ep0_expect_in; |
Sebastian Andrzej Siewior | 5bdb1dcc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 150 | dwc->delayed_status = false; |
Felipe Balbi | 7c81290 | 2013-07-22 12:41:47 +0300 | [diff] [blame] | 151 | usb_gadget_set_state(&dwc->gadget, USB_STATE_CONFIGURED); |
Felipe Balbi | 68d3e66 | 2011-12-08 13:56:27 +0200 | [diff] [blame] | 152 | |
| 153 | if (dwc->ep0state == EP0_STATUS_PHASE) |
Felipe Balbi | 7125d58 | 2012-07-19 21:05:08 +0300 | [diff] [blame] | 154 | __dwc3_ep0_do_control_status(dwc, dwc->eps[direction]); |
Felipe Balbi | 68d3e66 | 2011-12-08 13:56:27 +0200 | [diff] [blame] | 155 | else |
| 156 | dev_dbg(dwc->dev, "too early for delayed status\n"); |
Felipe Balbi | d9b33c6 | 2012-07-19 08:51:13 +0300 | [diff] [blame] | 157 | |
| 158 | return 0; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 159 | } |
| 160 | |
Felipe Balbi | fca8892 | 2012-07-19 09:05:35 +0300 | [diff] [blame] | 161 | /* |
| 162 | * Unfortunately we have uncovered a limitation wrt the Data Phase. |
| 163 | * |
| 164 | * Section 9.4 says we can wait for the XferNotReady(DATA) event to |
| 165 | * come before issueing Start Transfer command, but if we do, we will |
| 166 | * miss situations where the host starts another SETUP phase instead of |
| 167 | * the DATA phase. Such cases happen at least on TD.7.6 of the Link |
| 168 | * Layer Compliance Suite. |
| 169 | * |
| 170 | * The problem surfaces due to the fact that in case of back-to-back |
| 171 | * SETUP packets there will be no XferNotReady(DATA) generated and we |
| 172 | * will be stuck waiting for XferNotReady(DATA) forever. |
| 173 | * |
| 174 | * By looking at tables 9-13 and 9-14 of the Databook, we can see that |
| 175 | * it tells us to start Data Phase right away. It also mentions that if |
| 176 | * we receive a SETUP phase instead of the DATA phase, core will issue |
| 177 | * XferComplete for the DATA phase, before actually initiating it in |
| 178 | * the wire, with the TRB's status set to "SETUP_PENDING". Such status |
| 179 | * can only be used to print some debugging logs, as the core expects |
| 180 | * us to go through to the STATUS phase and start a CONTROL_STATUS TRB, |
| 181 | * just so it completes right away, without transferring anything and, |
| 182 | * only then, we can go back to the SETUP phase. |
| 183 | * |
| 184 | * Because of this scenario, SNPS decided to change the programming |
| 185 | * model of control transfers and support on-demand transfers only for |
| 186 | * the STATUS phase. To fix the issue we have now, we will always wait |
| 187 | * for gadget driver to queue the DATA phase's struct usb_request, then |
| 188 | * start it right away. |
| 189 | * |
| 190 | * If we're actually in a 2-stage transfer, we will wait for |
| 191 | * XferNotReady(STATUS). |
| 192 | */ |
| 193 | if (dwc->three_stage_setup) { |
| 194 | unsigned direction; |
| 195 | |
| 196 | direction = dwc->ep0_expect_in; |
| 197 | dwc->ep0state = EP0_DATA_PHASE; |
| 198 | |
| 199 | __dwc3_ep0_do_control_data(dwc, dwc->eps[direction], req); |
| 200 | |
| 201 | dep->flags &= ~DWC3_EP0_DIR_IN; |
| 202 | } |
| 203 | |
Felipe Balbi | 35f7569 | 2012-07-19 08:49:01 +0300 | [diff] [blame] | 204 | return 0; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request, |
| 208 | gfp_t gfp_flags) |
| 209 | { |
| 210 | struct dwc3_request *req = to_dwc3_request(request); |
| 211 | struct dwc3_ep *dep = to_dwc3_ep(ep); |
| 212 | struct dwc3 *dwc = dep->dwc; |
| 213 | |
| 214 | unsigned long flags; |
| 215 | |
| 216 | int ret; |
| 217 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 218 | spin_lock_irqsave(&dwc->lock, flags); |
Ido Shayevitz | 16e78db | 2012-03-12 20:25:24 +0200 | [diff] [blame] | 219 | if (!dep->endpoint.desc) { |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 220 | dev_dbg(dwc->dev, "trying to queue request %p to disabled %s\n", |
| 221 | request, dep->name); |
| 222 | ret = -ESHUTDOWN; |
| 223 | goto out; |
| 224 | } |
| 225 | |
| 226 | /* we share one TRB for ep0/1 */ |
Sebastian Andrzej Siewior | c2da2ff | 2011-10-20 19:04:16 +0200 | [diff] [blame] | 227 | if (!list_empty(&dep->request_list)) { |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 228 | ret = -EBUSY; |
| 229 | goto out; |
| 230 | } |
| 231 | |
| 232 | dev_vdbg(dwc->dev, "queueing request %p to %s length %d, state '%s'\n", |
| 233 | request, dep->name, request->length, |
| 234 | dwc3_ep0_state_string(dwc->ep0state)); |
| 235 | |
| 236 | ret = __dwc3_gadget_ep0_queue(dep, req); |
| 237 | |
| 238 | out: |
| 239 | spin_unlock_irqrestore(&dwc->lock, flags); |
| 240 | |
| 241 | return ret; |
| 242 | } |
| 243 | |
| 244 | static void dwc3_ep0_stall_and_restart(struct dwc3 *dwc) |
| 245 | { |
Felipe Balbi | 2dfe37d | 2012-07-23 09:07:41 +0300 | [diff] [blame] | 246 | struct dwc3_ep *dep; |
| 247 | |
| 248 | /* reinitialize physical ep1 */ |
| 249 | dep = dwc->eps[1]; |
| 250 | dep->flags = DWC3_EP_ENABLED; |
Felipe Balbi | d742220 | 2011-09-08 18:17:12 +0300 | [diff] [blame] | 251 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 252 | /* stall is always issued on EP0 */ |
Felipe Balbi | 2dfe37d | 2012-07-23 09:07:41 +0300 | [diff] [blame] | 253 | dep = dwc->eps[0]; |
Sebastian Andrzej Siewior | c2da2ff | 2011-10-20 19:04:16 +0200 | [diff] [blame] | 254 | __dwc3_gadget_ep_set_halt(dep, 1); |
| 255 | dep->flags = DWC3_EP_ENABLED; |
Sebastian Andrzej Siewior | 5bdb1dcc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 256 | dwc->delayed_status = false; |
Felipe Balbi | d742220 | 2011-09-08 18:17:12 +0300 | [diff] [blame] | 257 | |
| 258 | if (!list_empty(&dep->request_list)) { |
| 259 | struct dwc3_request *req; |
| 260 | |
| 261 | req = next_request(&dep->request_list); |
| 262 | dwc3_gadget_giveback(dep, req, -ECONNRESET); |
| 263 | } |
| 264 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 265 | dwc->ep0state = EP0_SETUP_PHASE; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 266 | dwc3_ep0_out_start(dwc); |
| 267 | } |
| 268 | |
Pratyush Anand | 08f0d96 | 2012-06-25 22:40:43 +0530 | [diff] [blame] | 269 | int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value) |
| 270 | { |
| 271 | struct dwc3_ep *dep = to_dwc3_ep(ep); |
| 272 | struct dwc3 *dwc = dep->dwc; |
| 273 | |
| 274 | dwc3_ep0_stall_and_restart(dwc); |
| 275 | |
| 276 | return 0; |
| 277 | } |
| 278 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 279 | void dwc3_ep0_out_start(struct dwc3 *dwc) |
| 280 | { |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 281 | int ret; |
| 282 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 283 | ret = dwc3_ep0_start_trans(dwc, 0, dwc->ctrl_req_addr, 8, |
| 284 | DWC3_TRBCTL_CONTROL_SETUP); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 285 | WARN_ON(ret < 0); |
| 286 | } |
| 287 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 288 | static struct dwc3_ep *dwc3_wIndex_to_dep(struct dwc3 *dwc, __le16 wIndex_le) |
| 289 | { |
| 290 | struct dwc3_ep *dep; |
| 291 | u32 windex = le16_to_cpu(wIndex_le); |
| 292 | u32 epnum; |
| 293 | |
| 294 | epnum = (windex & USB_ENDPOINT_NUMBER_MASK) << 1; |
| 295 | if ((windex & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) |
| 296 | epnum |= 1; |
| 297 | |
| 298 | dep = dwc->eps[epnum]; |
| 299 | if (dep->flags & DWC3_EP_ENABLED) |
| 300 | return dep; |
| 301 | |
| 302 | return NULL; |
| 303 | } |
| 304 | |
Sebastian Andrzej Siewior | 8ee6270 | 2011-10-18 19:13:29 +0200 | [diff] [blame] | 305 | static void dwc3_ep0_status_cmpl(struct usb_ep *ep, struct usb_request *req) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 306 | { |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 307 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 308 | /* |
| 309 | * ch 9.4.5 |
| 310 | */ |
Felipe Balbi | 25b8ff6 | 2011-11-04 12:32:47 +0200 | [diff] [blame] | 311 | static int dwc3_ep0_handle_status(struct dwc3 *dwc, |
| 312 | struct usb_ctrlrequest *ctrl) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 313 | { |
| 314 | struct dwc3_ep *dep; |
| 315 | u32 recip; |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 316 | u32 reg; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 317 | u16 usb_status = 0; |
| 318 | __le16 *response_pkt; |
| 319 | |
| 320 | recip = ctrl->bRequestType & USB_RECIP_MASK; |
| 321 | switch (recip) { |
| 322 | case USB_RECIP_DEVICE: |
| 323 | /* |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 324 | * LTM will be set once we know how to set this in HW. |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 325 | */ |
| 326 | usb_status |= dwc->is_selfpowered << USB_DEVICE_SELF_POWERED; |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 327 | |
| 328 | if (dwc->speed == DWC3_DSTS_SUPERSPEED) { |
| 329 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); |
| 330 | if (reg & DWC3_DCTL_INITU1ENA) |
| 331 | usb_status |= 1 << USB_DEV_STAT_U1_ENABLED; |
| 332 | if (reg & DWC3_DCTL_INITU2ENA) |
| 333 | usb_status |= 1 << USB_DEV_STAT_U2_ENABLED; |
| 334 | } |
| 335 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 336 | break; |
| 337 | |
| 338 | case USB_RECIP_INTERFACE: |
| 339 | /* |
| 340 | * Function Remote Wake Capable D0 |
| 341 | * Function Remote Wakeup D1 |
| 342 | */ |
| 343 | break; |
| 344 | |
| 345 | case USB_RECIP_ENDPOINT: |
| 346 | dep = dwc3_wIndex_to_dep(dwc, ctrl->wIndex); |
| 347 | if (!dep) |
Felipe Balbi | 25b8ff6 | 2011-11-04 12:32:47 +0200 | [diff] [blame] | 348 | return -EINVAL; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 349 | |
| 350 | if (dep->flags & DWC3_EP_STALL) |
| 351 | usb_status = 1 << USB_ENDPOINT_HALT; |
| 352 | break; |
| 353 | default: |
| 354 | return -EINVAL; |
Joe Perches | 2b84f92 | 2013-10-08 16:01:37 -0700 | [diff] [blame] | 355 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 356 | |
| 357 | response_pkt = (__le16 *) dwc->setup_buf; |
| 358 | *response_pkt = cpu_to_le16(usb_status); |
Felipe Balbi | e261779 | 2011-11-29 10:35:47 +0200 | [diff] [blame] | 359 | |
| 360 | dep = dwc->eps[0]; |
| 361 | dwc->ep0_usb_req.dep = dep; |
Sebastian Andrzej Siewior | e0ce0b0 | 2011-11-25 12:03:46 +0100 | [diff] [blame] | 362 | dwc->ep0_usb_req.request.length = sizeof(*response_pkt); |
Felipe Balbi | 0fc9a1b | 2011-12-19 11:32:34 +0200 | [diff] [blame] | 363 | dwc->ep0_usb_req.request.buf = dwc->setup_buf; |
Sebastian Andrzej Siewior | e0ce0b0 | 2011-11-25 12:03:46 +0100 | [diff] [blame] | 364 | dwc->ep0_usb_req.request.complete = dwc3_ep0_status_cmpl; |
Felipe Balbi | e261779 | 2011-11-29 10:35:47 +0200 | [diff] [blame] | 365 | |
| 366 | return __dwc3_gadget_ep0_queue(dep, &dwc->ep0_usb_req); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 367 | } |
| 368 | |
| 369 | static int dwc3_ep0_handle_feature(struct dwc3 *dwc, |
| 370 | struct usb_ctrlrequest *ctrl, int set) |
| 371 | { |
| 372 | struct dwc3_ep *dep; |
| 373 | u32 recip; |
| 374 | u32 wValue; |
| 375 | u32 wIndex; |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 376 | u32 reg; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 377 | int ret; |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 378 | enum usb_device_state state; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 379 | |
| 380 | wValue = le16_to_cpu(ctrl->wValue); |
| 381 | wIndex = le16_to_cpu(ctrl->wIndex); |
| 382 | recip = ctrl->bRequestType & USB_RECIP_MASK; |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 383 | state = dwc->gadget.state; |
| 384 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 385 | switch (recip) { |
| 386 | case USB_RECIP_DEVICE: |
| 387 | |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 388 | switch (wValue) { |
| 389 | case USB_DEVICE_REMOTE_WAKEUP: |
| 390 | break; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 391 | /* |
| 392 | * 9.4.1 says only only for SS, in AddressState only for |
| 393 | * default control pipe |
| 394 | */ |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 395 | case USB_DEVICE_U1_ENABLE: |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 396 | if (state != USB_STATE_CONFIGURED) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 397 | return -EINVAL; |
| 398 | if (dwc->speed != DWC3_DSTS_SUPERSPEED) |
| 399 | return -EINVAL; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 400 | |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 401 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); |
| 402 | if (set) |
| 403 | reg |= DWC3_DCTL_INITU1ENA; |
| 404 | else |
| 405 | reg &= ~DWC3_DCTL_INITU1ENA; |
| 406 | dwc3_writel(dwc->regs, DWC3_DCTL, reg); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 407 | break; |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 408 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 409 | case USB_DEVICE_U2_ENABLE: |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 410 | if (state != USB_STATE_CONFIGURED) |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 411 | return -EINVAL; |
| 412 | if (dwc->speed != DWC3_DSTS_SUPERSPEED) |
| 413 | return -EINVAL; |
| 414 | |
| 415 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); |
| 416 | if (set) |
| 417 | reg |= DWC3_DCTL_INITU2ENA; |
| 418 | else |
| 419 | reg &= ~DWC3_DCTL_INITU2ENA; |
| 420 | dwc3_writel(dwc->regs, DWC3_DCTL, reg); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 421 | break; |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 422 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 423 | case USB_DEVICE_LTM_ENABLE: |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 424 | return -EINVAL; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 425 | break; |
| 426 | |
| 427 | case USB_DEVICE_TEST_MODE: |
| 428 | if ((wIndex & 0xff) != 0) |
| 429 | return -EINVAL; |
| 430 | if (!set) |
| 431 | return -EINVAL; |
| 432 | |
Gerard Cauvy | 3b63736 | 2012-02-10 12:21:18 +0200 | [diff] [blame] | 433 | dwc->test_mode_nr = wIndex >> 8; |
| 434 | dwc->test_mode = true; |
Gerard Cauvy | ecb0779 | 2012-03-16 16:20:10 +0200 | [diff] [blame] | 435 | break; |
| 436 | default: |
| 437 | return -EINVAL; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 438 | } |
| 439 | break; |
| 440 | |
| 441 | case USB_RECIP_INTERFACE: |
| 442 | switch (wValue) { |
| 443 | case USB_INTRF_FUNC_SUSPEND: |
| 444 | if (wIndex & USB_INTRF_FUNC_SUSPEND_LP) |
| 445 | /* XXX enable Low power suspend */ |
| 446 | ; |
| 447 | if (wIndex & USB_INTRF_FUNC_SUSPEND_RW) |
| 448 | /* XXX enable remote wakeup */ |
| 449 | ; |
| 450 | break; |
| 451 | default: |
| 452 | return -EINVAL; |
| 453 | } |
| 454 | break; |
| 455 | |
| 456 | case USB_RECIP_ENDPOINT: |
| 457 | switch (wValue) { |
| 458 | case USB_ENDPOINT_HALT: |
Paul Zimmerman | 1d04679 | 2012-02-15 18:56:56 -0800 | [diff] [blame] | 459 | dep = dwc3_wIndex_to_dep(dwc, wIndex); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 460 | if (!dep) |
| 461 | return -EINVAL; |
Alan Stern | a535d81 | 2013-11-01 12:05:12 -0400 | [diff] [blame] | 462 | if (set == 0 && (dep->flags & DWC3_EP_WEDGE)) |
| 463 | break; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 464 | ret = __dwc3_gadget_ep_set_halt(dep, set); |
| 465 | if (ret) |
| 466 | return -EINVAL; |
| 467 | break; |
| 468 | default: |
| 469 | return -EINVAL; |
| 470 | } |
| 471 | break; |
| 472 | |
| 473 | default: |
| 474 | return -EINVAL; |
Joe Perches | 2b84f92 | 2013-10-08 16:01:37 -0700 | [diff] [blame] | 475 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 476 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 477 | return 0; |
| 478 | } |
| 479 | |
| 480 | static int dwc3_ep0_set_address(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) |
| 481 | { |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 482 | enum usb_device_state state = dwc->gadget.state; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 483 | u32 addr; |
| 484 | u32 reg; |
| 485 | |
| 486 | addr = le16_to_cpu(ctrl->wValue); |
Felipe Balbi | f96a6ec | 2011-10-15 21:37:35 +0300 | [diff] [blame] | 487 | if (addr > 127) { |
| 488 | dev_dbg(dwc->dev, "invalid device address %d\n", addr); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 489 | return -EINVAL; |
Felipe Balbi | f96a6ec | 2011-10-15 21:37:35 +0300 | [diff] [blame] | 490 | } |
| 491 | |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 492 | if (state == USB_STATE_CONFIGURED) { |
Felipe Balbi | f96a6ec | 2011-10-15 21:37:35 +0300 | [diff] [blame] | 493 | dev_dbg(dwc->dev, "trying to set address when configured\n"); |
| 494 | return -EINVAL; |
| 495 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 496 | |
Felipe Balbi | 2646021 | 2011-09-30 10:58:36 +0300 | [diff] [blame] | 497 | reg = dwc3_readl(dwc->regs, DWC3_DCFG); |
| 498 | reg &= ~(DWC3_DCFG_DEVADDR_MASK); |
| 499 | reg |= DWC3_DCFG_DEVADDR(addr); |
| 500 | dwc3_writel(dwc->regs, DWC3_DCFG, reg); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 501 | |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 502 | if (addr) |
Felipe Balbi | 14cd592 | 2011-12-19 13:01:52 +0200 | [diff] [blame] | 503 | usb_gadget_set_state(&dwc->gadget, USB_STATE_ADDRESS); |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 504 | else |
Felipe Balbi | 14cd592 | 2011-12-19 13:01:52 +0200 | [diff] [blame] | 505 | usb_gadget_set_state(&dwc->gadget, USB_STATE_DEFAULT); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 506 | |
Felipe Balbi | 2646021 | 2011-09-30 10:58:36 +0300 | [diff] [blame] | 507 | return 0; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 508 | } |
| 509 | |
| 510 | static int dwc3_ep0_delegate_req(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) |
| 511 | { |
| 512 | int ret; |
| 513 | |
| 514 | spin_unlock(&dwc->lock); |
| 515 | ret = dwc->gadget_driver->setup(&dwc->gadget, ctrl); |
| 516 | spin_lock(&dwc->lock); |
| 517 | return ret; |
| 518 | } |
| 519 | |
| 520 | static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) |
| 521 | { |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 522 | enum usb_device_state state = dwc->gadget.state; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 523 | u32 cfg; |
| 524 | int ret; |
Pratyush Anand | e274a31 | 2012-07-02 10:21:54 +0530 | [diff] [blame] | 525 | u32 reg; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 526 | |
Paul Zimmerman | b23c843 | 2011-09-30 10:58:42 +0300 | [diff] [blame] | 527 | dwc->start_config_issued = false; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 528 | cfg = le16_to_cpu(ctrl->wValue); |
| 529 | |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 530 | switch (state) { |
| 531 | case USB_STATE_DEFAULT: |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 532 | return -EINVAL; |
| 533 | break; |
| 534 | |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 535 | case USB_STATE_ADDRESS: |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 536 | ret = dwc3_ep0_delegate_req(dwc, ctrl); |
| 537 | /* if the cfg matches and the cfg is non zero */ |
Felipe Balbi | 457e84b | 2012-01-18 18:04:09 +0200 | [diff] [blame] | 538 | if (cfg && (!ret || (ret == USB_GADGET_DELAYED_STATUS))) { |
Felipe Balbi | 7c81290 | 2013-07-22 12:41:47 +0300 | [diff] [blame] | 539 | |
| 540 | /* |
| 541 | * only change state if set_config has already |
| 542 | * been processed. If gadget driver returns |
| 543 | * USB_GADGET_DELAYED_STATUS, we will wait |
| 544 | * to change the state on the next usb_ep_queue() |
| 545 | */ |
| 546 | if (ret == 0) |
| 547 | usb_gadget_set_state(&dwc->gadget, |
| 548 | USB_STATE_CONFIGURED); |
Felipe Balbi | 14cd592 | 2011-12-19 13:01:52 +0200 | [diff] [blame] | 549 | |
Pratyush Anand | e274a31 | 2012-07-02 10:21:54 +0530 | [diff] [blame] | 550 | /* |
| 551 | * Enable transition to U1/U2 state when |
| 552 | * nothing is pending from application. |
| 553 | */ |
| 554 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); |
| 555 | reg |= (DWC3_DCTL_ACCEPTU1ENA | DWC3_DCTL_ACCEPTU2ENA); |
| 556 | dwc3_writel(dwc->regs, DWC3_DCTL, reg); |
| 557 | |
Felipe Balbi | 457e84b | 2012-01-18 18:04:09 +0200 | [diff] [blame] | 558 | dwc->resize_fifos = true; |
| 559 | dev_dbg(dwc->dev, "resize fifos flag SET\n"); |
| 560 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 561 | break; |
| 562 | |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 563 | case USB_STATE_CONFIGURED: |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 564 | ret = dwc3_ep0_delegate_req(dwc, ctrl); |
Felipe Balbi | 7a42d83 | 2013-07-22 12:31:31 +0300 | [diff] [blame] | 565 | if (!cfg && !ret) |
Felipe Balbi | 14cd592 | 2011-12-19 13:01:52 +0200 | [diff] [blame] | 566 | usb_gadget_set_state(&dwc->gadget, |
| 567 | USB_STATE_ADDRESS); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 568 | break; |
Sebastian Andrzej Siewior | 5bdb1dcc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 569 | default: |
| 570 | ret = -EINVAL; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 571 | } |
Sebastian Andrzej Siewior | 5bdb1dcc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 572 | return ret; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 573 | } |
| 574 | |
Felipe Balbi | 865e09e | 2012-04-24 16:19:49 +0300 | [diff] [blame] | 575 | static void dwc3_ep0_set_sel_cmpl(struct usb_ep *ep, struct usb_request *req) |
| 576 | { |
| 577 | struct dwc3_ep *dep = to_dwc3_ep(ep); |
| 578 | struct dwc3 *dwc = dep->dwc; |
| 579 | |
| 580 | u32 param = 0; |
| 581 | u32 reg; |
| 582 | |
| 583 | struct timing { |
| 584 | u8 u1sel; |
| 585 | u8 u1pel; |
| 586 | u16 u2sel; |
| 587 | u16 u2pel; |
| 588 | } __packed timing; |
| 589 | |
| 590 | int ret; |
| 591 | |
| 592 | memcpy(&timing, req->buf, sizeof(timing)); |
| 593 | |
| 594 | dwc->u1sel = timing.u1sel; |
| 595 | dwc->u1pel = timing.u1pel; |
Felipe Balbi | c8cf7af | 2012-05-31 11:00:28 +0300 | [diff] [blame] | 596 | dwc->u2sel = le16_to_cpu(timing.u2sel); |
| 597 | dwc->u2pel = le16_to_cpu(timing.u2pel); |
Felipe Balbi | 865e09e | 2012-04-24 16:19:49 +0300 | [diff] [blame] | 598 | |
| 599 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); |
| 600 | if (reg & DWC3_DCTL_INITU2ENA) |
| 601 | param = dwc->u2pel; |
| 602 | if (reg & DWC3_DCTL_INITU1ENA) |
| 603 | param = dwc->u1pel; |
| 604 | |
| 605 | /* |
| 606 | * According to Synopsys Databook, if parameter is |
| 607 | * greater than 125, a value of zero should be |
| 608 | * programmed in the register. |
| 609 | */ |
| 610 | if (param > 125) |
| 611 | param = 0; |
| 612 | |
| 613 | /* now that we have the time, issue DGCMD Set Sel */ |
| 614 | ret = dwc3_send_gadget_generic_command(dwc, |
| 615 | DWC3_DGCMD_SET_PERIODIC_PAR, param); |
| 616 | WARN_ON(ret < 0); |
| 617 | } |
| 618 | |
| 619 | static int dwc3_ep0_set_sel(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) |
| 620 | { |
| 621 | struct dwc3_ep *dep; |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 622 | enum usb_device_state state = dwc->gadget.state; |
Felipe Balbi | 865e09e | 2012-04-24 16:19:49 +0300 | [diff] [blame] | 623 | u16 wLength; |
| 624 | u16 wValue; |
| 625 | |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 626 | if (state == USB_STATE_DEFAULT) |
Felipe Balbi | 865e09e | 2012-04-24 16:19:49 +0300 | [diff] [blame] | 627 | return -EINVAL; |
| 628 | |
| 629 | wValue = le16_to_cpu(ctrl->wValue); |
| 630 | wLength = le16_to_cpu(ctrl->wLength); |
| 631 | |
| 632 | if (wLength != 6) { |
| 633 | dev_err(dwc->dev, "Set SEL should be 6 bytes, got %d\n", |
| 634 | wLength); |
| 635 | return -EINVAL; |
| 636 | } |
| 637 | |
| 638 | /* |
| 639 | * To handle Set SEL we need to receive 6 bytes from Host. So let's |
| 640 | * queue a usb_request for 6 bytes. |
| 641 | * |
| 642 | * Remember, though, this controller can't handle non-wMaxPacketSize |
| 643 | * aligned transfers on the OUT direction, so we queue a request for |
| 644 | * wMaxPacketSize instead. |
| 645 | */ |
| 646 | dep = dwc->eps[0]; |
| 647 | dwc->ep0_usb_req.dep = dep; |
| 648 | dwc->ep0_usb_req.request.length = dep->endpoint.maxpacket; |
| 649 | dwc->ep0_usb_req.request.buf = dwc->setup_buf; |
| 650 | dwc->ep0_usb_req.request.complete = dwc3_ep0_set_sel_cmpl; |
| 651 | |
| 652 | return __dwc3_gadget_ep0_queue(dep, &dwc->ep0_usb_req); |
| 653 | } |
| 654 | |
Felipe Balbi | c12a0d8 | 2012-04-25 10:45:05 +0300 | [diff] [blame] | 655 | static int dwc3_ep0_set_isoch_delay(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) |
| 656 | { |
| 657 | u16 wLength; |
| 658 | u16 wValue; |
| 659 | u16 wIndex; |
| 660 | |
| 661 | wValue = le16_to_cpu(ctrl->wValue); |
| 662 | wLength = le16_to_cpu(ctrl->wLength); |
| 663 | wIndex = le16_to_cpu(ctrl->wIndex); |
| 664 | |
| 665 | if (wIndex || wLength) |
| 666 | return -EINVAL; |
| 667 | |
| 668 | /* |
| 669 | * REVISIT It's unclear from Databook what to do with this |
| 670 | * value. For now, just cache it. |
| 671 | */ |
| 672 | dwc->isoch_delay = wValue; |
| 673 | |
| 674 | return 0; |
| 675 | } |
| 676 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 677 | static int dwc3_ep0_std_request(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) |
| 678 | { |
| 679 | int ret; |
| 680 | |
| 681 | switch (ctrl->bRequest) { |
| 682 | case USB_REQ_GET_STATUS: |
| 683 | dev_vdbg(dwc->dev, "USB_REQ_GET_STATUS\n"); |
| 684 | ret = dwc3_ep0_handle_status(dwc, ctrl); |
| 685 | break; |
| 686 | case USB_REQ_CLEAR_FEATURE: |
| 687 | dev_vdbg(dwc->dev, "USB_REQ_CLEAR_FEATURE\n"); |
| 688 | ret = dwc3_ep0_handle_feature(dwc, ctrl, 0); |
| 689 | break; |
| 690 | case USB_REQ_SET_FEATURE: |
| 691 | dev_vdbg(dwc->dev, "USB_REQ_SET_FEATURE\n"); |
| 692 | ret = dwc3_ep0_handle_feature(dwc, ctrl, 1); |
| 693 | break; |
| 694 | case USB_REQ_SET_ADDRESS: |
| 695 | dev_vdbg(dwc->dev, "USB_REQ_SET_ADDRESS\n"); |
| 696 | ret = dwc3_ep0_set_address(dwc, ctrl); |
| 697 | break; |
| 698 | case USB_REQ_SET_CONFIGURATION: |
| 699 | dev_vdbg(dwc->dev, "USB_REQ_SET_CONFIGURATION\n"); |
| 700 | ret = dwc3_ep0_set_config(dwc, ctrl); |
| 701 | break; |
Felipe Balbi | 865e09e | 2012-04-24 16:19:49 +0300 | [diff] [blame] | 702 | case USB_REQ_SET_SEL: |
| 703 | dev_vdbg(dwc->dev, "USB_REQ_SET_SEL\n"); |
| 704 | ret = dwc3_ep0_set_sel(dwc, ctrl); |
| 705 | break; |
Felipe Balbi | c12a0d8 | 2012-04-25 10:45:05 +0300 | [diff] [blame] | 706 | case USB_REQ_SET_ISOCH_DELAY: |
| 707 | dev_vdbg(dwc->dev, "USB_REQ_SET_ISOCH_DELAY\n"); |
| 708 | ret = dwc3_ep0_set_isoch_delay(dwc, ctrl); |
| 709 | break; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 710 | default: |
| 711 | dev_vdbg(dwc->dev, "Forwarding to gadget driver\n"); |
| 712 | ret = dwc3_ep0_delegate_req(dwc, ctrl); |
| 713 | break; |
Joe Perches | 2b84f92 | 2013-10-08 16:01:37 -0700 | [diff] [blame] | 714 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 715 | |
| 716 | return ret; |
| 717 | } |
| 718 | |
| 719 | static void dwc3_ep0_inspect_setup(struct dwc3 *dwc, |
| 720 | const struct dwc3_event_depevt *event) |
| 721 | { |
| 722 | struct usb_ctrlrequest *ctrl = dwc->ctrl_req; |
Felipe Balbi | ef21ede | 2012-05-31 10:29:49 +0300 | [diff] [blame] | 723 | int ret = -EINVAL; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 724 | u32 len; |
| 725 | |
| 726 | if (!dwc->gadget_driver) |
Felipe Balbi | ef21ede | 2012-05-31 10:29:49 +0300 | [diff] [blame] | 727 | goto out; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 728 | |
| 729 | len = le16_to_cpu(ctrl->wLength); |
Felipe Balbi | 1ddcb21 | 2011-08-30 15:52:17 +0300 | [diff] [blame] | 730 | if (!len) { |
Felipe Balbi | d95b09b | 2011-09-30 10:58:37 +0300 | [diff] [blame] | 731 | dwc->three_stage_setup = false; |
| 732 | dwc->ep0_expect_in = false; |
Felipe Balbi | 1ddcb21 | 2011-08-30 15:52:17 +0300 | [diff] [blame] | 733 | dwc->ep0_next_event = DWC3_EP0_NRDY_STATUS; |
| 734 | } else { |
Felipe Balbi | d95b09b | 2011-09-30 10:58:37 +0300 | [diff] [blame] | 735 | dwc->three_stage_setup = true; |
| 736 | dwc->ep0_expect_in = !!(ctrl->bRequestType & USB_DIR_IN); |
Felipe Balbi | 1ddcb21 | 2011-08-30 15:52:17 +0300 | [diff] [blame] | 737 | dwc->ep0_next_event = DWC3_EP0_NRDY_DATA; |
| 738 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 739 | |
| 740 | if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) |
| 741 | ret = dwc3_ep0_std_request(dwc, ctrl); |
| 742 | else |
| 743 | ret = dwc3_ep0_delegate_req(dwc, ctrl); |
| 744 | |
Sebastian Andrzej Siewior | 5bdb1dcc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 745 | if (ret == USB_GADGET_DELAYED_STATUS) |
| 746 | dwc->delayed_status = true; |
| 747 | |
Felipe Balbi | ef21ede | 2012-05-31 10:29:49 +0300 | [diff] [blame] | 748 | out: |
| 749 | if (ret < 0) |
| 750 | dwc3_ep0_stall_and_restart(dwc); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 751 | } |
| 752 | |
| 753 | static void dwc3_ep0_complete_data(struct dwc3 *dwc, |
| 754 | const struct dwc3_event_depevt *event) |
| 755 | { |
| 756 | struct dwc3_request *r = NULL; |
| 757 | struct usb_request *ur; |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 758 | struct dwc3_trb *trb; |
Sebastian Andrzej Siewior | c2da2ff | 2011-10-20 19:04:16 +0200 | [diff] [blame] | 759 | struct dwc3_ep *ep0; |
Felipe Balbi | c611ccb | 2011-08-27 02:30:33 +0300 | [diff] [blame] | 760 | u32 transferred; |
Felipe Balbi | fca8892 | 2012-07-19 09:05:35 +0300 | [diff] [blame] | 761 | u32 status; |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 762 | u32 length; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 763 | u8 epnum; |
| 764 | |
| 765 | epnum = event->endpoint_number; |
Sebastian Andrzej Siewior | c2da2ff | 2011-10-20 19:04:16 +0200 | [diff] [blame] | 766 | ep0 = dwc->eps[0]; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 767 | |
Felipe Balbi | 1ddcb21 | 2011-08-30 15:52:17 +0300 | [diff] [blame] | 768 | dwc->ep0_next_event = DWC3_EP0_NRDY_STATUS; |
| 769 | |
Sebastian Andrzej Siewior | c2da2ff | 2011-10-20 19:04:16 +0200 | [diff] [blame] | 770 | r = next_request(&ep0->request_list); |
Sebastian Andrzej Siewior | 8ee6270 | 2011-10-18 19:13:29 +0200 | [diff] [blame] | 771 | ur = &r->request; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 772 | |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 773 | trb = dwc->ep0_trb; |
Felipe Balbi | fca8892 | 2012-07-19 09:05:35 +0300 | [diff] [blame] | 774 | |
| 775 | status = DWC3_TRB_SIZE_TRBSTS(trb->size); |
| 776 | if (status == DWC3_TRBSTS_SETUP_PENDING) { |
| 777 | dev_dbg(dwc->dev, "Setup Pending received\n"); |
| 778 | |
| 779 | if (r) |
| 780 | dwc3_gadget_giveback(ep0, r, -ECONNRESET); |
| 781 | |
| 782 | return; |
| 783 | } |
| 784 | |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 785 | length = trb->size & DWC3_TRB_SIZE_MASK; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 786 | |
Felipe Balbi | a682970 | 2011-08-27 22:18:09 +0300 | [diff] [blame] | 787 | if (dwc->ep0_bounced) { |
Moiz Sonasath | 566ccdd | 2012-03-14 00:44:56 -0500 | [diff] [blame] | 788 | unsigned transfer_size = ur->length; |
| 789 | unsigned maxp = ep0->endpoint.maxpacket; |
| 790 | |
| 791 | transfer_size += (maxp - (transfer_size % maxp)); |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 792 | transferred = min_t(u32, ur->length, |
Moiz Sonasath | 566ccdd | 2012-03-14 00:44:56 -0500 | [diff] [blame] | 793 | transfer_size - length); |
Felipe Balbi | a682970 | 2011-08-27 22:18:09 +0300 | [diff] [blame] | 794 | memcpy(ur->buf, dwc->ep0_bounce, transferred); |
Felipe Balbi | a682970 | 2011-08-27 22:18:09 +0300 | [diff] [blame] | 795 | } else { |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 796 | transferred = ur->length - length; |
Felipe Balbi | a682970 | 2011-08-27 22:18:09 +0300 | [diff] [blame] | 797 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 798 | |
Felipe Balbi | cd423dd | 2012-03-21 11:44:00 +0200 | [diff] [blame] | 799 | ur->actual += transferred; |
| 800 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 801 | if ((epnum & 1) && ur->actual < ur->length) { |
| 802 | /* for some reason we did not get everything out */ |
| 803 | |
| 804 | dwc3_ep0_stall_and_restart(dwc); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 805 | } else { |
| 806 | /* |
| 807 | * handle the case where we have to send a zero packet. This |
| 808 | * seems to be case when req.length > maxpacket. Could it be? |
| 809 | */ |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 810 | if (r) |
Sebastian Andrzej Siewior | c2da2ff | 2011-10-20 19:04:16 +0200 | [diff] [blame] | 811 | dwc3_gadget_giveback(ep0, r, 0); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 812 | } |
| 813 | } |
| 814 | |
Felipe Balbi | 85a7810 | 2012-05-31 12:32:37 +0300 | [diff] [blame] | 815 | static void dwc3_ep0_complete_status(struct dwc3 *dwc, |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 816 | const struct dwc3_event_depevt *event) |
| 817 | { |
| 818 | struct dwc3_request *r; |
| 819 | struct dwc3_ep *dep; |
Felipe Balbi | fca8892 | 2012-07-19 09:05:35 +0300 | [diff] [blame] | 820 | struct dwc3_trb *trb; |
| 821 | u32 status; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 822 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 823 | dep = dwc->eps[0]; |
Felipe Balbi | fca8892 | 2012-07-19 09:05:35 +0300 | [diff] [blame] | 824 | trb = dwc->ep0_trb; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 825 | |
| 826 | if (!list_empty(&dep->request_list)) { |
| 827 | r = next_request(&dep->request_list); |
| 828 | |
| 829 | dwc3_gadget_giveback(dep, r, 0); |
| 830 | } |
| 831 | |
Gerard Cauvy | 3b63736 | 2012-02-10 12:21:18 +0200 | [diff] [blame] | 832 | if (dwc->test_mode) { |
| 833 | int ret; |
| 834 | |
| 835 | ret = dwc3_gadget_set_test_mode(dwc, dwc->test_mode_nr); |
| 836 | if (ret < 0) { |
| 837 | dev_dbg(dwc->dev, "Invalid Test #%d\n", |
| 838 | dwc->test_mode_nr); |
| 839 | dwc3_ep0_stall_and_restart(dwc); |
Felipe Balbi | 5c81aba | 2012-06-25 19:30:49 +0300 | [diff] [blame] | 840 | return; |
Gerard Cauvy | 3b63736 | 2012-02-10 12:21:18 +0200 | [diff] [blame] | 841 | } |
| 842 | } |
| 843 | |
Felipe Balbi | fca8892 | 2012-07-19 09:05:35 +0300 | [diff] [blame] | 844 | status = DWC3_TRB_SIZE_TRBSTS(trb->size); |
| 845 | if (status == DWC3_TRBSTS_SETUP_PENDING) |
| 846 | dev_dbg(dwc->dev, "Setup Pending received\n"); |
| 847 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 848 | dwc->ep0state = EP0_SETUP_PHASE; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 849 | dwc3_ep0_out_start(dwc); |
| 850 | } |
| 851 | |
| 852 | static void dwc3_ep0_xfer_complete(struct dwc3 *dwc, |
| 853 | const struct dwc3_event_depevt *event) |
| 854 | { |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 855 | struct dwc3_ep *dep = dwc->eps[event->endpoint_number]; |
| 856 | |
| 857 | dep->flags &= ~DWC3_EP_BUSY; |
Felipe Balbi | b4996a8 | 2012-06-06 12:04:13 +0300 | [diff] [blame] | 858 | dep->resource_index = 0; |
Felipe Balbi | df62df5 | 2011-10-14 15:11:49 +0300 | [diff] [blame] | 859 | dwc->setup_packet_pending = false; |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 860 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 861 | switch (dwc->ep0state) { |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 862 | case EP0_SETUP_PHASE: |
| 863 | dev_vdbg(dwc->dev, "Inspecting Setup Bytes\n"); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 864 | dwc3_ep0_inspect_setup(dwc, event); |
| 865 | break; |
| 866 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 867 | case EP0_DATA_PHASE: |
| 868 | dev_vdbg(dwc->dev, "Data Phase\n"); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 869 | dwc3_ep0_complete_data(dwc, event); |
| 870 | break; |
| 871 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 872 | case EP0_STATUS_PHASE: |
| 873 | dev_vdbg(dwc->dev, "Status Phase\n"); |
Felipe Balbi | 85a7810 | 2012-05-31 12:32:37 +0300 | [diff] [blame] | 874 | dwc3_ep0_complete_status(dwc, event); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 875 | break; |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 876 | default: |
| 877 | WARN(true, "UNKNOWN ep0state %d\n", dwc->ep0state); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 878 | } |
| 879 | } |
| 880 | |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 881 | static void __dwc3_ep0_do_control_data(struct dwc3 *dwc, |
| 882 | struct dwc3_ep *dep, struct dwc3_request *req) |
| 883 | { |
| 884 | int ret; |
| 885 | |
| 886 | req->direction = !!dep->number; |
| 887 | |
| 888 | if (req->request.length == 0) { |
| 889 | ret = dwc3_ep0_start_trans(dwc, dep->number, |
| 890 | dwc->ctrl_req_addr, 0, |
| 891 | DWC3_TRBCTL_CONTROL_DATA); |
Felipe Balbi | c74c6d4 | 2012-05-04 13:08:22 +0300 | [diff] [blame] | 892 | } else if (!IS_ALIGNED(req->request.length, dep->endpoint.maxpacket) |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 893 | && (dep->number == 0)) { |
Andrew Morton | c390b03 | 2013-03-08 09:42:50 +0200 | [diff] [blame] | 894 | u32 transfer_size; |
| 895 | u32 maxpacket; |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 896 | |
| 897 | ret = usb_gadget_map_request(&dwc->gadget, &req->request, |
| 898 | dep->number); |
| 899 | if (ret) { |
| 900 | dev_dbg(dwc->dev, "failed to map request\n"); |
| 901 | return; |
| 902 | } |
| 903 | |
| 904 | WARN_ON(req->request.length > DWC3_EP0_BOUNCE_SIZE); |
| 905 | |
Andrew Morton | c390b03 | 2013-03-08 09:42:50 +0200 | [diff] [blame] | 906 | maxpacket = dep->endpoint.maxpacket; |
| 907 | transfer_size = roundup(req->request.length, maxpacket); |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 908 | |
| 909 | dwc->ep0_bounced = true; |
| 910 | |
| 911 | /* |
| 912 | * REVISIT in case request length is bigger than |
| 913 | * DWC3_EP0_BOUNCE_SIZE we will need two chained |
| 914 | * TRBs to handle the transfer. |
| 915 | */ |
| 916 | ret = dwc3_ep0_start_trans(dwc, dep->number, |
| 917 | dwc->ep0_bounce_addr, transfer_size, |
| 918 | DWC3_TRBCTL_CONTROL_DATA); |
| 919 | } else { |
| 920 | ret = usb_gadget_map_request(&dwc->gadget, &req->request, |
| 921 | dep->number); |
| 922 | if (ret) { |
| 923 | dev_dbg(dwc->dev, "failed to map request\n"); |
| 924 | return; |
| 925 | } |
| 926 | |
| 927 | ret = dwc3_ep0_start_trans(dwc, dep->number, req->request.dma, |
| 928 | req->request.length, DWC3_TRBCTL_CONTROL_DATA); |
| 929 | } |
| 930 | |
| 931 | WARN_ON(ret < 0); |
| 932 | } |
| 933 | |
Sebastian Andrzej Siewior | f0f2b2a | 2011-11-02 13:30:44 +0100 | [diff] [blame] | 934 | static int dwc3_ep0_start_control_status(struct dwc3_ep *dep) |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 935 | { |
Sebastian Andrzej Siewior | f0f2b2a | 2011-11-02 13:30:44 +0100 | [diff] [blame] | 936 | struct dwc3 *dwc = dep->dwc; |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 937 | u32 type; |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 938 | |
| 939 | type = dwc->three_stage_setup ? DWC3_TRBCTL_CONTROL_STATUS3 |
| 940 | : DWC3_TRBCTL_CONTROL_STATUS2; |
| 941 | |
Sebastian Andrzej Siewior | f0f2b2a | 2011-11-02 13:30:44 +0100 | [diff] [blame] | 942 | return dwc3_ep0_start_trans(dwc, dep->number, |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 943 | dwc->ctrl_req_addr, 0, type); |
Sebastian Andrzej Siewior | f0f2b2a | 2011-11-02 13:30:44 +0100 | [diff] [blame] | 944 | } |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 945 | |
Felipe Balbi | 788a23f | 2012-05-21 14:22:41 +0300 | [diff] [blame] | 946 | static void __dwc3_ep0_do_control_status(struct dwc3 *dwc, struct dwc3_ep *dep) |
Sebastian Andrzej Siewior | f0f2b2a | 2011-11-02 13:30:44 +0100 | [diff] [blame] | 947 | { |
Felipe Balbi | 457e84b | 2012-01-18 18:04:09 +0200 | [diff] [blame] | 948 | if (dwc->resize_fifos) { |
| 949 | dev_dbg(dwc->dev, "starting to resize fifos\n"); |
| 950 | dwc3_gadget_resize_tx_fifos(dwc); |
| 951 | dwc->resize_fifos = 0; |
| 952 | } |
| 953 | |
Sebastian Andrzej Siewior | f0f2b2a | 2011-11-02 13:30:44 +0100 | [diff] [blame] | 954 | WARN_ON(dwc3_ep0_start_control_status(dep)); |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 955 | } |
| 956 | |
Felipe Balbi | 788a23f | 2012-05-21 14:22:41 +0300 | [diff] [blame] | 957 | static void dwc3_ep0_do_control_status(struct dwc3 *dwc, |
| 958 | const struct dwc3_event_depevt *event) |
| 959 | { |
| 960 | struct dwc3_ep *dep = dwc->eps[event->endpoint_number]; |
| 961 | |
| 962 | __dwc3_ep0_do_control_status(dwc, dep); |
| 963 | } |
| 964 | |
Felipe Balbi | 2e3db06 | 2012-07-19 09:26:59 +0300 | [diff] [blame] | 965 | static void dwc3_ep0_end_control_data(struct dwc3 *dwc, struct dwc3_ep *dep) |
| 966 | { |
| 967 | struct dwc3_gadget_ep_cmd_params params; |
| 968 | u32 cmd; |
| 969 | int ret; |
| 970 | |
| 971 | if (!dep->resource_index) |
| 972 | return; |
| 973 | |
| 974 | cmd = DWC3_DEPCMD_ENDTRANSFER; |
| 975 | cmd |= DWC3_DEPCMD_CMDIOC; |
| 976 | cmd |= DWC3_DEPCMD_PARAM(dep->resource_index); |
| 977 | memset(¶ms, 0, sizeof(params)); |
| 978 | ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, cmd, ¶ms); |
| 979 | WARN_ON_ONCE(ret); |
| 980 | dep->resource_index = 0; |
| 981 | } |
| 982 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 983 | static void dwc3_ep0_xfernotready(struct dwc3 *dwc, |
| 984 | const struct dwc3_event_depevt *event) |
| 985 | { |
Felipe Balbi | df62df5 | 2011-10-14 15:11:49 +0300 | [diff] [blame] | 986 | dwc->setup_packet_pending = true; |
| 987 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 988 | switch (event->status) { |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 989 | case DEPEVT_STATUS_CONTROL_DATA: |
| 990 | dev_vdbg(dwc->dev, "Control Data\n"); |
Felipe Balbi | 1ddcb21 | 2011-08-30 15:52:17 +0300 | [diff] [blame] | 991 | |
Felipe Balbi | 55f3fba | 2011-09-08 18:27:33 +0300 | [diff] [blame] | 992 | /* |
Felipe Balbi | 2e3db06 | 2012-07-19 09:26:59 +0300 | [diff] [blame] | 993 | * We already have a DATA transfer in the controller's cache, |
| 994 | * if we receive a XferNotReady(DATA) we will ignore it, unless |
| 995 | * it's for the wrong direction. |
Felipe Balbi | 55f3fba | 2011-09-08 18:27:33 +0300 | [diff] [blame] | 996 | * |
Felipe Balbi | 2e3db06 | 2012-07-19 09:26:59 +0300 | [diff] [blame] | 997 | * In that case, we must issue END_TRANSFER command to the Data |
| 998 | * Phase we already have started and issue SetStall on the |
| 999 | * control endpoint. |
Felipe Balbi | 55f3fba | 2011-09-08 18:27:33 +0300 | [diff] [blame] | 1000 | */ |
| 1001 | if (dwc->ep0_expect_in != event->endpoint_number) { |
Felipe Balbi | 2e3db06 | 2012-07-19 09:26:59 +0300 | [diff] [blame] | 1002 | struct dwc3_ep *dep = dwc->eps[dwc->ep0_expect_in]; |
| 1003 | |
Felipe Balbi | 55f3fba | 2011-09-08 18:27:33 +0300 | [diff] [blame] | 1004 | dev_vdbg(dwc->dev, "Wrong direction for Data phase\n"); |
Felipe Balbi | 2e3db06 | 2012-07-19 09:26:59 +0300 | [diff] [blame] | 1005 | dwc3_ep0_end_control_data(dwc, dep); |
Felipe Balbi | 55f3fba | 2011-09-08 18:27:33 +0300 | [diff] [blame] | 1006 | dwc3_ep0_stall_and_restart(dwc); |
| 1007 | return; |
| 1008 | } |
| 1009 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1010 | break; |
Felipe Balbi | 1ddcb21 | 2011-08-30 15:52:17 +0300 | [diff] [blame] | 1011 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 1012 | case DEPEVT_STATUS_CONTROL_STATUS: |
Felipe Balbi | 77fa6df | 2012-07-23 09:09:32 +0300 | [diff] [blame] | 1013 | if (dwc->ep0_next_event != DWC3_EP0_NRDY_STATUS) |
| 1014 | return; |
| 1015 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 1016 | dev_vdbg(dwc->dev, "Control Status\n"); |
Felipe Balbi | 1ddcb21 | 2011-08-30 15:52:17 +0300 | [diff] [blame] | 1017 | |
Sebastian Andrzej Siewior | f0f2b2a | 2011-11-02 13:30:44 +0100 | [diff] [blame] | 1018 | dwc->ep0state = EP0_STATUS_PHASE; |
| 1019 | |
Sebastian Andrzej Siewior | 5bdb1dcc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 1020 | if (dwc->delayed_status) { |
| 1021 | WARN_ON_ONCE(event->endpoint_number != 1); |
| 1022 | dev_vdbg(dwc->dev, "Mass Storage delayed status\n"); |
| 1023 | return; |
| 1024 | } |
| 1025 | |
Felipe Balbi | 788a23f | 2012-05-21 14:22:41 +0300 | [diff] [blame] | 1026 | dwc3_ep0_do_control_status(dwc, event); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1027 | } |
| 1028 | } |
| 1029 | |
| 1030 | void dwc3_ep0_interrupt(struct dwc3 *dwc, |
Felipe Balbi | 8becf27 | 2011-11-04 12:40:05 +0200 | [diff] [blame] | 1031 | const struct dwc3_event_depevt *event) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1032 | { |
| 1033 | u8 epnum = event->endpoint_number; |
| 1034 | |
| 1035 | dev_dbg(dwc->dev, "%s while ep%d%s in state '%s'\n", |
| 1036 | dwc3_ep_event_string(event->endpoint_event), |
Sebastian Andrzej Siewior | b147f35 | 2011-09-30 10:58:40 +0300 | [diff] [blame] | 1037 | epnum >> 1, (epnum & 1) ? "in" : "out", |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1038 | dwc3_ep0_state_string(dwc->ep0state)); |
| 1039 | |
| 1040 | switch (event->endpoint_event) { |
| 1041 | case DWC3_DEPEVT_XFERCOMPLETE: |
| 1042 | dwc3_ep0_xfer_complete(dwc, event); |
| 1043 | break; |
| 1044 | |
| 1045 | case DWC3_DEPEVT_XFERNOTREADY: |
| 1046 | dwc3_ep0_xfernotready(dwc, event); |
| 1047 | break; |
| 1048 | |
| 1049 | case DWC3_DEPEVT_XFERINPROGRESS: |
| 1050 | case DWC3_DEPEVT_RXTXFIFOEVT: |
| 1051 | case DWC3_DEPEVT_STREAMEVT: |
| 1052 | case DWC3_DEPEVT_EPCMDCMPLT: |
| 1053 | break; |
| 1054 | } |
| 1055 | } |