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 | 5bdb1dc | 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" |
Felipe Balbi | 80977dc | 2014-08-19 16:37:22 -0500 | [diff] [blame] | 34 | #include "debug.h" |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 35 | #include "gadget.h" |
| 36 | #include "io.h" |
| 37 | |
Felipe Balbi | 788a23f | 2012-05-21 14:22:41 +0300 | [diff] [blame] | 38 | 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] | 39 | static void __dwc3_ep0_do_control_data(struct dwc3 *dwc, |
| 40 | struct dwc3_ep *dep, struct dwc3_request *req); |
Sebastian Andrzej Siewior | 5bdb1dc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 41 | |
Felipe Balbi | 7931ec8 | 2016-12-20 13:57:32 +0200 | [diff] [blame] | 42 | static void dwc3_ep0_prepare_one_trb(struct dwc3 *dwc, u8 epnum, |
| 43 | dma_addr_t buf_dma, u32 len, u32 type, bool chain) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 44 | { |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 45 | struct dwc3_trb *trb; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 46 | struct dwc3_ep *dep; |
| 47 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 48 | dep = dwc->eps[epnum]; |
| 49 | |
Felipe Balbi | 53fd881 | 2016-04-04 15:33:41 +0300 | [diff] [blame] | 50 | trb = &dwc->ep0_trb[dep->trb_enqueue]; |
Kishon Vijay Abraham I | 2abd9d5 | 2015-07-27 12:25:31 +0530 | [diff] [blame] | 51 | |
| 52 | if (chain) |
Felipe Balbi | 53fd881 | 2016-04-04 15:33:41 +0300 | [diff] [blame] | 53 | dep->trb_enqueue++; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 54 | |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 55 | trb->bpl = lower_32_bits(buf_dma); |
| 56 | trb->bph = upper_32_bits(buf_dma); |
| 57 | trb->size = len; |
| 58 | trb->ctrl = type; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 59 | |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 60 | trb->ctrl |= (DWC3_TRB_CTRL_HWO |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 61 | | DWC3_TRB_CTRL_ISP_IMI); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 62 | |
Kishon Vijay Abraham I | 2abd9d5 | 2015-07-27 12:25:31 +0530 | [diff] [blame] | 63 | if (chain) |
| 64 | trb->ctrl |= DWC3_TRB_CTRL_CHN; |
| 65 | else |
| 66 | trb->ctrl |= (DWC3_TRB_CTRL_IOC |
| 67 | | DWC3_TRB_CTRL_LST); |
| 68 | |
Felipe Balbi | 7931ec8 | 2016-12-20 13:57:32 +0200 | [diff] [blame] | 69 | trace_dwc3_prepare_trb(dep, trb); |
| 70 | } |
| 71 | |
Felipe Balbi | 19ec312 | 2016-12-20 14:08:48 +0200 | [diff] [blame] | 72 | static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum) |
Felipe Balbi | 7931ec8 | 2016-12-20 13:57:32 +0200 | [diff] [blame] | 73 | { |
| 74 | struct dwc3_gadget_ep_cmd_params params; |
| 75 | struct dwc3_ep *dep; |
| 76 | int ret; |
| 77 | |
| 78 | dep = dwc->eps[epnum]; |
| 79 | if (dep->flags & DWC3_EP_BUSY) |
Kishon Vijay Abraham I | 2abd9d5 | 2015-07-27 12:25:31 +0530 | [diff] [blame] | 80 | return 0; |
| 81 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 82 | memset(¶ms, 0, sizeof(params)); |
Felipe Balbi | dc1c70a | 2011-09-30 10:58:51 +0300 | [diff] [blame] | 83 | params.param0 = upper_32_bits(dwc->ep0_trb_addr); |
| 84 | params.param1 = lower_32_bits(dwc->ep0_trb_addr); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 85 | |
Felipe Balbi | 2cd4718 | 2016-04-12 16:42:43 +0300 | [diff] [blame] | 86 | ret = dwc3_send_gadget_ep_cmd(dep, DWC3_DEPCMD_STARTTRANSFER, ¶ms); |
Felipe Balbi | 8566cd1 | 2016-09-26 11:16:39 +0300 | [diff] [blame] | 87 | if (ret < 0) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 88 | return ret; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 89 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 90 | dep->flags |= DWC3_EP_BUSY; |
Felipe Balbi | 2eb8801 | 2016-04-12 16:53:39 +0300 | [diff] [blame] | 91 | dep->resource_index = dwc3_gadget_ep_get_transfer_index(dep); |
Felipe Balbi | 1ddcb21 | 2011-08-30 15:52:17 +0300 | [diff] [blame] | 92 | dwc->ep0_next_event = DWC3_EP0_COMPLETE; |
| 93 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 94 | return 0; |
| 95 | } |
| 96 | |
| 97 | static int __dwc3_gadget_ep0_queue(struct dwc3_ep *dep, |
| 98 | struct dwc3_request *req) |
| 99 | { |
Sebastian Andrzej Siewior | 5bdb1dc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 100 | struct dwc3 *dwc = dep->dwc; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 101 | |
| 102 | req->request.actual = 0; |
| 103 | req->request.status = -EINPROGRESS; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 104 | req->epnum = dep->number; |
| 105 | |
Felipe Balbi | aa3342c | 2016-03-14 11:01:31 +0200 | [diff] [blame] | 106 | list_add_tail(&req->list, &dep->pending_list); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 107 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 108 | /* |
| 109 | * Gadget driver might not be quick enough to queue a request |
| 110 | * before we get a Transfer Not Ready event on this endpoint. |
| 111 | * |
| 112 | * In that case, we will set DWC3_EP_PENDING_REQUEST. When that |
| 113 | * flag is set, it's telling us that as soon as Gadget queues the |
| 114 | * required request, we should kick the transfer here because the |
| 115 | * IRQ we were waiting for is long gone. |
| 116 | */ |
| 117 | if (dep->flags & DWC3_EP_PENDING_REQUEST) { |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 118 | unsigned direction; |
Felipe Balbi | a682970 | 2011-08-27 22:18:09 +0300 | [diff] [blame] | 119 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 120 | direction = !!(dep->flags & DWC3_EP0_DIR_IN); |
Felipe Balbi | a682970 | 2011-08-27 22:18:09 +0300 | [diff] [blame] | 121 | |
Felipe Balbi | 68d8a78 | 2011-12-29 06:32:29 +0200 | [diff] [blame] | 122 | if (dwc->ep0state != EP0_DATA_PHASE) { |
| 123 | dev_WARN(dwc->dev, "Unexpected pending request\n"); |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 124 | return 0; |
| 125 | } |
Felipe Balbi | a682970 | 2011-08-27 22:18:09 +0300 | [diff] [blame] | 126 | |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 127 | __dwc3_ep0_do_control_data(dwc, dwc->eps[direction], req); |
| 128 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 129 | dep->flags &= ~(DWC3_EP_PENDING_REQUEST | |
| 130 | DWC3_EP0_DIR_IN); |
Felipe Balbi | d9b33c6 | 2012-07-19 08:51:13 +0300 | [diff] [blame] | 131 | |
| 132 | return 0; |
| 133 | } |
| 134 | |
| 135 | /* |
| 136 | * In case gadget driver asked us to delay the STATUS phase, |
| 137 | * handle it here. |
| 138 | */ |
| 139 | if (dwc->delayed_status) { |
Felipe Balbi | 7125d58 | 2012-07-19 21:05:08 +0300 | [diff] [blame] | 140 | unsigned direction; |
| 141 | |
| 142 | direction = !dwc->ep0_expect_in; |
Sebastian Andrzej Siewior | 5bdb1dc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 143 | dwc->delayed_status = false; |
Felipe Balbi | 7c81290 | 2013-07-22 12:41:47 +0300 | [diff] [blame] | 144 | usb_gadget_set_state(&dwc->gadget, USB_STATE_CONFIGURED); |
Felipe Balbi | 68d3e66 | 2011-12-08 13:56:27 +0200 | [diff] [blame] | 145 | |
| 146 | if (dwc->ep0state == EP0_STATUS_PHASE) |
Felipe Balbi | 7125d58 | 2012-07-19 21:05:08 +0300 | [diff] [blame] | 147 | __dwc3_ep0_do_control_status(dwc, dwc->eps[direction]); |
Felipe Balbi | d9b33c6 | 2012-07-19 08:51:13 +0300 | [diff] [blame] | 148 | |
| 149 | return 0; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 150 | } |
| 151 | |
Felipe Balbi | fca8892 | 2012-07-19 09:05:35 +0300 | [diff] [blame] | 152 | /* |
| 153 | * Unfortunately we have uncovered a limitation wrt the Data Phase. |
| 154 | * |
| 155 | * Section 9.4 says we can wait for the XferNotReady(DATA) event to |
| 156 | * come before issueing Start Transfer command, but if we do, we will |
| 157 | * miss situations where the host starts another SETUP phase instead of |
| 158 | * the DATA phase. Such cases happen at least on TD.7.6 of the Link |
| 159 | * Layer Compliance Suite. |
| 160 | * |
| 161 | * The problem surfaces due to the fact that in case of back-to-back |
| 162 | * SETUP packets there will be no XferNotReady(DATA) generated and we |
| 163 | * will be stuck waiting for XferNotReady(DATA) forever. |
| 164 | * |
| 165 | * By looking at tables 9-13 and 9-14 of the Databook, we can see that |
| 166 | * it tells us to start Data Phase right away. It also mentions that if |
| 167 | * we receive a SETUP phase instead of the DATA phase, core will issue |
| 168 | * XferComplete for the DATA phase, before actually initiating it in |
| 169 | * the wire, with the TRB's status set to "SETUP_PENDING". Such status |
| 170 | * can only be used to print some debugging logs, as the core expects |
| 171 | * us to go through to the STATUS phase and start a CONTROL_STATUS TRB, |
| 172 | * just so it completes right away, without transferring anything and, |
| 173 | * only then, we can go back to the SETUP phase. |
| 174 | * |
| 175 | * Because of this scenario, SNPS decided to change the programming |
| 176 | * model of control transfers and support on-demand transfers only for |
| 177 | * the STATUS phase. To fix the issue we have now, we will always wait |
| 178 | * for gadget driver to queue the DATA phase's struct usb_request, then |
| 179 | * start it right away. |
| 180 | * |
| 181 | * If we're actually in a 2-stage transfer, we will wait for |
| 182 | * XferNotReady(STATUS). |
| 183 | */ |
| 184 | if (dwc->three_stage_setup) { |
| 185 | unsigned direction; |
| 186 | |
| 187 | direction = dwc->ep0_expect_in; |
| 188 | dwc->ep0state = EP0_DATA_PHASE; |
| 189 | |
| 190 | __dwc3_ep0_do_control_data(dwc, dwc->eps[direction], req); |
| 191 | |
| 192 | dep->flags &= ~DWC3_EP0_DIR_IN; |
| 193 | } |
| 194 | |
Felipe Balbi | 35f7569 | 2012-07-19 08:49:01 +0300 | [diff] [blame] | 195 | return 0; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 196 | } |
| 197 | |
| 198 | int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request, |
| 199 | gfp_t gfp_flags) |
| 200 | { |
| 201 | struct dwc3_request *req = to_dwc3_request(request); |
| 202 | struct dwc3_ep *dep = to_dwc3_ep(ep); |
| 203 | struct dwc3 *dwc = dep->dwc; |
| 204 | |
| 205 | unsigned long flags; |
| 206 | |
| 207 | int ret; |
| 208 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 209 | spin_lock_irqsave(&dwc->lock, flags); |
Ido Shayevitz | 16e78db | 2012-03-12 20:25:24 +0200 | [diff] [blame] | 210 | if (!dep->endpoint.desc) { |
Felipe Balbi | 5eb30ce | 2016-11-03 14:07:51 +0200 | [diff] [blame] | 211 | dev_err(dwc->dev, "%s: can't queue to disabled endpoint\n", |
| 212 | dep->name); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 213 | ret = -ESHUTDOWN; |
| 214 | goto out; |
| 215 | } |
| 216 | |
| 217 | /* we share one TRB for ep0/1 */ |
Felipe Balbi | aa3342c | 2016-03-14 11:01:31 +0200 | [diff] [blame] | 218 | if (!list_empty(&dep->pending_list)) { |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 219 | ret = -EBUSY; |
| 220 | goto out; |
| 221 | } |
| 222 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 223 | ret = __dwc3_gadget_ep0_queue(dep, req); |
| 224 | |
| 225 | out: |
| 226 | spin_unlock_irqrestore(&dwc->lock, flags); |
| 227 | |
| 228 | return ret; |
| 229 | } |
| 230 | |
| 231 | static void dwc3_ep0_stall_and_restart(struct dwc3 *dwc) |
| 232 | { |
Felipe Balbi | 2dfe37d | 2012-07-23 09:07:41 +0300 | [diff] [blame] | 233 | struct dwc3_ep *dep; |
| 234 | |
| 235 | /* reinitialize physical ep1 */ |
| 236 | dep = dwc->eps[1]; |
| 237 | dep->flags = DWC3_EP_ENABLED; |
Felipe Balbi | d742220 | 2011-09-08 18:17:12 +0300 | [diff] [blame] | 238 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 239 | /* stall is always issued on EP0 */ |
Felipe Balbi | 2dfe37d | 2012-07-23 09:07:41 +0300 | [diff] [blame] | 240 | dep = dwc->eps[0]; |
Felipe Balbi | 7a60855 | 2014-09-24 14:19:52 -0500 | [diff] [blame] | 241 | __dwc3_gadget_ep_set_halt(dep, 1, false); |
Sebastian Andrzej Siewior | c2da2ff | 2011-10-20 19:04:16 +0200 | [diff] [blame] | 242 | dep->flags = DWC3_EP_ENABLED; |
Sebastian Andrzej Siewior | 5bdb1dc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 243 | dwc->delayed_status = false; |
Felipe Balbi | d742220 | 2011-09-08 18:17:12 +0300 | [diff] [blame] | 244 | |
Felipe Balbi | aa3342c | 2016-03-14 11:01:31 +0200 | [diff] [blame] | 245 | if (!list_empty(&dep->pending_list)) { |
Felipe Balbi | d742220 | 2011-09-08 18:17:12 +0300 | [diff] [blame] | 246 | struct dwc3_request *req; |
| 247 | |
Felipe Balbi | aa3342c | 2016-03-14 11:01:31 +0200 | [diff] [blame] | 248 | req = next_request(&dep->pending_list); |
Felipe Balbi | d742220 | 2011-09-08 18:17:12 +0300 | [diff] [blame] | 249 | dwc3_gadget_giveback(dep, req, -ECONNRESET); |
| 250 | } |
| 251 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 252 | dwc->ep0state = EP0_SETUP_PHASE; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 253 | dwc3_ep0_out_start(dwc); |
| 254 | } |
| 255 | |
Felipe Balbi | 33fb691 | 2014-09-24 10:46:46 -0500 | [diff] [blame] | 256 | int __dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value) |
Pratyush Anand | 08f0d96 | 2012-06-25 22:40:43 +0530 | [diff] [blame] | 257 | { |
| 258 | struct dwc3_ep *dep = to_dwc3_ep(ep); |
| 259 | struct dwc3 *dwc = dep->dwc; |
| 260 | |
| 261 | dwc3_ep0_stall_and_restart(dwc); |
| 262 | |
| 263 | return 0; |
| 264 | } |
| 265 | |
Felipe Balbi | 33fb691 | 2014-09-24 10:46:46 -0500 | [diff] [blame] | 266 | int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value) |
| 267 | { |
| 268 | struct dwc3_ep *dep = to_dwc3_ep(ep); |
| 269 | struct dwc3 *dwc = dep->dwc; |
| 270 | unsigned long flags; |
| 271 | int ret; |
| 272 | |
| 273 | spin_lock_irqsave(&dwc->lock, flags); |
| 274 | ret = __dwc3_gadget_ep0_set_halt(ep, value); |
| 275 | spin_unlock_irqrestore(&dwc->lock, flags); |
| 276 | |
| 277 | return ret; |
| 278 | } |
| 279 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 280 | void dwc3_ep0_out_start(struct dwc3 *dwc) |
| 281 | { |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 282 | int ret; |
| 283 | |
Baolin Wang | bb01473 | 2016-10-14 17:11:33 +0800 | [diff] [blame] | 284 | complete(&dwc->ep0_in_setup); |
| 285 | |
Felipe Balbi | 19ec312 | 2016-12-20 14:08:48 +0200 | [diff] [blame] | 286 | dwc3_ep0_prepare_one_trb(dwc, 0, dwc->ctrl_req_addr, 8, |
Kishon Vijay Abraham I | 368ca11 | 2015-07-27 12:25:30 +0530 | [diff] [blame] | 287 | DWC3_TRBCTL_CONTROL_SETUP, false); |
Felipe Balbi | 19ec312 | 2016-12-20 14:08:48 +0200 | [diff] [blame] | 288 | ret = dwc3_ep0_start_trans(dwc, 0); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 289 | WARN_ON(ret < 0); |
| 290 | } |
| 291 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 292 | static struct dwc3_ep *dwc3_wIndex_to_dep(struct dwc3 *dwc, __le16 wIndex_le) |
| 293 | { |
| 294 | struct dwc3_ep *dep; |
| 295 | u32 windex = le16_to_cpu(wIndex_le); |
| 296 | u32 epnum; |
| 297 | |
| 298 | epnum = (windex & USB_ENDPOINT_NUMBER_MASK) << 1; |
| 299 | if ((windex & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) |
| 300 | epnum |= 1; |
| 301 | |
| 302 | dep = dwc->eps[epnum]; |
| 303 | if (dep->flags & DWC3_EP_ENABLED) |
| 304 | return dep; |
| 305 | |
| 306 | return NULL; |
| 307 | } |
| 308 | |
Sebastian Andrzej Siewior | 8ee6270 | 2011-10-18 19:13:29 +0200 | [diff] [blame] | 309 | 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] | 310 | { |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 311 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 312 | /* |
| 313 | * ch 9.4.5 |
| 314 | */ |
Felipe Balbi | 25b8ff6 | 2011-11-04 12:32:47 +0200 | [diff] [blame] | 315 | static int dwc3_ep0_handle_status(struct dwc3 *dwc, |
| 316 | struct usb_ctrlrequest *ctrl) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 317 | { |
| 318 | struct dwc3_ep *dep; |
| 319 | u32 recip; |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 320 | u32 reg; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 321 | u16 usb_status = 0; |
| 322 | __le16 *response_pkt; |
| 323 | |
| 324 | recip = ctrl->bRequestType & USB_RECIP_MASK; |
| 325 | switch (recip) { |
| 326 | case USB_RECIP_DEVICE: |
| 327 | /* |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 328 | * 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] | 329 | */ |
Peter Chen | bcdea50 | 2015-01-28 16:32:40 +0800 | [diff] [blame] | 330 | usb_status |= dwc->gadget.is_selfpowered; |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 331 | |
John Youn | ee5cd41 | 2016-02-05 17:08:45 -0800 | [diff] [blame] | 332 | if ((dwc->speed == DWC3_DSTS_SUPERSPEED) || |
| 333 | (dwc->speed == DWC3_DSTS_SUPERSPEED_PLUS)) { |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 334 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); |
| 335 | if (reg & DWC3_DCTL_INITU1ENA) |
| 336 | usb_status |= 1 << USB_DEV_STAT_U1_ENABLED; |
| 337 | if (reg & DWC3_DCTL_INITU2ENA) |
| 338 | usb_status |= 1 << USB_DEV_STAT_U2_ENABLED; |
| 339 | } |
| 340 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 341 | break; |
| 342 | |
| 343 | case USB_RECIP_INTERFACE: |
| 344 | /* |
| 345 | * Function Remote Wake Capable D0 |
| 346 | * Function Remote Wakeup D1 |
| 347 | */ |
| 348 | break; |
| 349 | |
| 350 | case USB_RECIP_ENDPOINT: |
| 351 | dep = dwc3_wIndex_to_dep(dwc, ctrl->wIndex); |
| 352 | if (!dep) |
Felipe Balbi | 25b8ff6 | 2011-11-04 12:32:47 +0200 | [diff] [blame] | 353 | return -EINVAL; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 354 | |
| 355 | if (dep->flags & DWC3_EP_STALL) |
| 356 | usb_status = 1 << USB_ENDPOINT_HALT; |
| 357 | break; |
| 358 | default: |
| 359 | return -EINVAL; |
Joe Perches | 2b84f92 | 2013-10-08 16:01:37 -0700 | [diff] [blame] | 360 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 361 | |
| 362 | response_pkt = (__le16 *) dwc->setup_buf; |
| 363 | *response_pkt = cpu_to_le16(usb_status); |
Felipe Balbi | e261779 | 2011-11-29 10:35:47 +0200 | [diff] [blame] | 364 | |
| 365 | dep = dwc->eps[0]; |
| 366 | dwc->ep0_usb_req.dep = dep; |
Sebastian Andrzej Siewior | e0ce0b0 | 2011-11-25 12:03:46 +0100 | [diff] [blame] | 367 | dwc->ep0_usb_req.request.length = sizeof(*response_pkt); |
Felipe Balbi | 0fc9a1b | 2011-12-19 11:32:34 +0200 | [diff] [blame] | 368 | dwc->ep0_usb_req.request.buf = dwc->setup_buf; |
Sebastian Andrzej Siewior | e0ce0b0 | 2011-11-25 12:03:46 +0100 | [diff] [blame] | 369 | dwc->ep0_usb_req.request.complete = dwc3_ep0_status_cmpl; |
Felipe Balbi | e261779 | 2011-11-29 10:35:47 +0200 | [diff] [blame] | 370 | |
| 371 | return __dwc3_gadget_ep0_queue(dep, &dwc->ep0_usb_req); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 372 | } |
| 373 | |
Felipe Balbi | 39e07ff | 2016-10-03 12:55:29 +0300 | [diff] [blame] | 374 | static int dwc3_ep0_handle_u1(struct dwc3 *dwc, enum usb_device_state state, |
| 375 | int set) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 376 | { |
Felipe Balbi | 39e07ff | 2016-10-03 12:55:29 +0300 | [diff] [blame] | 377 | u32 reg; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 378 | |
Felipe Balbi | 39e07ff | 2016-10-03 12:55:29 +0300 | [diff] [blame] | 379 | if (state != USB_STATE_CONFIGURED) |
| 380 | return -EINVAL; |
| 381 | if ((dwc->speed != DWC3_DSTS_SUPERSPEED) && |
| 382 | (dwc->speed != DWC3_DSTS_SUPERSPEED_PLUS)) |
| 383 | return -EINVAL; |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 384 | |
Felipe Balbi | 39e07ff | 2016-10-03 12:55:29 +0300 | [diff] [blame] | 385 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); |
| 386 | if (set) |
| 387 | reg |= DWC3_DCTL_INITU1ENA; |
| 388 | else |
| 389 | reg &= ~DWC3_DCTL_INITU1ENA; |
| 390 | dwc3_writel(dwc->regs, DWC3_DCTL, reg); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 391 | |
Felipe Balbi | 39e07ff | 2016-10-03 12:55:29 +0300 | [diff] [blame] | 392 | return 0; |
| 393 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 394 | |
Felipe Balbi | 39e07ff | 2016-10-03 12:55:29 +0300 | [diff] [blame] | 395 | static int dwc3_ep0_handle_u2(struct dwc3 *dwc, enum usb_device_state state, |
| 396 | int set) |
| 397 | { |
| 398 | u32 reg; |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 399 | |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 400 | |
Felipe Balbi | 39e07ff | 2016-10-03 12:55:29 +0300 | [diff] [blame] | 401 | if (state != USB_STATE_CONFIGURED) |
| 402 | return -EINVAL; |
| 403 | if ((dwc->speed != DWC3_DSTS_SUPERSPEED) && |
| 404 | (dwc->speed != DWC3_DSTS_SUPERSPEED_PLUS)) |
| 405 | return -EINVAL; |
Sebastian Andrzej Siewior | e6a3b5e | 2011-09-13 17:54:39 +0200 | [diff] [blame] | 406 | |
Felipe Balbi | 39e07ff | 2016-10-03 12:55:29 +0300 | [diff] [blame] | 407 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); |
| 408 | if (set) |
| 409 | reg |= DWC3_DCTL_INITU2ENA; |
| 410 | else |
| 411 | reg &= ~DWC3_DCTL_INITU2ENA; |
| 412 | dwc3_writel(dwc->regs, DWC3_DCTL, reg); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 413 | |
Felipe Balbi | 39e07ff | 2016-10-03 12:55:29 +0300 | [diff] [blame] | 414 | return 0; |
| 415 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 416 | |
Felipe Balbi | 39e07ff | 2016-10-03 12:55:29 +0300 | [diff] [blame] | 417 | static int dwc3_ep0_handle_test(struct dwc3 *dwc, enum usb_device_state state, |
| 418 | u32 wIndex, int set) |
| 419 | { |
| 420 | if ((wIndex & 0xff) != 0) |
| 421 | return -EINVAL; |
| 422 | if (!set) |
| 423 | return -EINVAL; |
| 424 | |
| 425 | switch (wIndex >> 8) { |
| 426 | case TEST_J: |
| 427 | case TEST_K: |
| 428 | case TEST_SE0_NAK: |
| 429 | case TEST_PACKET: |
| 430 | case TEST_FORCE_EN: |
| 431 | dwc->test_mode_nr = wIndex >> 8; |
| 432 | dwc->test_mode = true; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 433 | break; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 434 | default: |
| 435 | return -EINVAL; |
Joe Perches | 2b84f92 | 2013-10-08 16:01:37 -0700 | [diff] [blame] | 436 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 437 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 438 | return 0; |
| 439 | } |
| 440 | |
Felipe Balbi | 39e07ff | 2016-10-03 12:55:29 +0300 | [diff] [blame] | 441 | static int dwc3_ep0_handle_device(struct dwc3 *dwc, |
| 442 | struct usb_ctrlrequest *ctrl, int set) |
| 443 | { |
| 444 | enum usb_device_state state; |
| 445 | u32 wValue; |
| 446 | u32 wIndex; |
| 447 | int ret = 0; |
| 448 | |
| 449 | wValue = le16_to_cpu(ctrl->wValue); |
| 450 | wIndex = le16_to_cpu(ctrl->wIndex); |
| 451 | state = dwc->gadget.state; |
| 452 | |
| 453 | switch (wValue) { |
| 454 | case USB_DEVICE_REMOTE_WAKEUP: |
| 455 | break; |
| 456 | /* |
| 457 | * 9.4.1 says only only for SS, in AddressState only for |
| 458 | * default control pipe |
| 459 | */ |
| 460 | case USB_DEVICE_U1_ENABLE: |
| 461 | ret = dwc3_ep0_handle_u1(dwc, state, set); |
| 462 | break; |
| 463 | case USB_DEVICE_U2_ENABLE: |
| 464 | ret = dwc3_ep0_handle_u2(dwc, state, set); |
| 465 | break; |
| 466 | case USB_DEVICE_LTM_ENABLE: |
| 467 | ret = -EINVAL; |
| 468 | break; |
| 469 | case USB_DEVICE_TEST_MODE: |
| 470 | ret = dwc3_ep0_handle_test(dwc, state, wIndex, set); |
| 471 | break; |
| 472 | default: |
| 473 | ret = -EINVAL; |
| 474 | } |
| 475 | |
| 476 | return ret; |
| 477 | } |
| 478 | |
| 479 | static int dwc3_ep0_handle_intf(struct dwc3 *dwc, |
| 480 | struct usb_ctrlrequest *ctrl, int set) |
| 481 | { |
| 482 | enum usb_device_state state; |
| 483 | u32 wValue; |
| 484 | u32 wIndex; |
| 485 | int ret = 0; |
| 486 | |
| 487 | wValue = le16_to_cpu(ctrl->wValue); |
| 488 | wIndex = le16_to_cpu(ctrl->wIndex); |
| 489 | state = dwc->gadget.state; |
| 490 | |
| 491 | switch (wValue) { |
| 492 | case USB_INTRF_FUNC_SUSPEND: |
Arnd Bergmann | 1c404b5 | 2016-11-16 16:37:30 +0100 | [diff] [blame] | 493 | /* |
| 494 | * REVISIT: Ideally we would enable some low power mode here, |
| 495 | * however it's unclear what we should be doing here. |
| 496 | * |
| 497 | * For now, we're not doing anything, just making sure we return |
| 498 | * 0 so USB Command Verifier tests pass without any errors. |
| 499 | */ |
Felipe Balbi | 39e07ff | 2016-10-03 12:55:29 +0300 | [diff] [blame] | 500 | break; |
| 501 | default: |
| 502 | ret = -EINVAL; |
| 503 | } |
| 504 | |
| 505 | return ret; |
| 506 | } |
| 507 | |
| 508 | static int dwc3_ep0_handle_endpoint(struct dwc3 *dwc, |
| 509 | struct usb_ctrlrequest *ctrl, int set) |
| 510 | { |
| 511 | struct dwc3_ep *dep; |
| 512 | enum usb_device_state state; |
| 513 | u32 wValue; |
| 514 | u32 wIndex; |
| 515 | int ret; |
| 516 | |
| 517 | wValue = le16_to_cpu(ctrl->wValue); |
| 518 | wIndex = le16_to_cpu(ctrl->wIndex); |
| 519 | state = dwc->gadget.state; |
| 520 | |
| 521 | switch (wValue) { |
| 522 | case USB_ENDPOINT_HALT: |
| 523 | dep = dwc3_wIndex_to_dep(dwc, ctrl->wIndex); |
| 524 | if (!dep) |
| 525 | return -EINVAL; |
| 526 | |
| 527 | if (set == 0 && (dep->flags & DWC3_EP_WEDGE)) |
| 528 | break; |
| 529 | |
| 530 | ret = __dwc3_gadget_ep_set_halt(dep, set, true); |
| 531 | if (ret) |
| 532 | return -EINVAL; |
| 533 | break; |
| 534 | default: |
| 535 | return -EINVAL; |
| 536 | } |
| 537 | |
| 538 | return 0; |
| 539 | } |
| 540 | |
| 541 | static int dwc3_ep0_handle_feature(struct dwc3 *dwc, |
| 542 | struct usb_ctrlrequest *ctrl, int set) |
| 543 | { |
| 544 | u32 recip; |
| 545 | int ret; |
| 546 | enum usb_device_state state; |
| 547 | |
| 548 | recip = ctrl->bRequestType & USB_RECIP_MASK; |
| 549 | state = dwc->gadget.state; |
| 550 | |
| 551 | switch (recip) { |
| 552 | case USB_RECIP_DEVICE: |
| 553 | ret = dwc3_ep0_handle_device(dwc, ctrl, set); |
| 554 | break; |
| 555 | case USB_RECIP_INTERFACE: |
| 556 | ret = dwc3_ep0_handle_intf(dwc, ctrl, set); |
| 557 | break; |
| 558 | case USB_RECIP_ENDPOINT: |
| 559 | ret = dwc3_ep0_handle_endpoint(dwc, ctrl, set); |
| 560 | break; |
| 561 | default: |
| 562 | ret = -EINVAL; |
| 563 | } |
| 564 | |
| 565 | return ret; |
| 566 | } |
| 567 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 568 | static int dwc3_ep0_set_address(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) |
| 569 | { |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 570 | enum usb_device_state state = dwc->gadget.state; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 571 | u32 addr; |
| 572 | u32 reg; |
| 573 | |
| 574 | addr = le16_to_cpu(ctrl->wValue); |
Felipe Balbi | f96a6ec | 2011-10-15 21:37:35 +0300 | [diff] [blame] | 575 | if (addr > 127) { |
Felipe Balbi | 5eb30ce | 2016-11-03 14:07:51 +0200 | [diff] [blame] | 576 | dev_err(dwc->dev, "invalid device address %d\n", addr); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 577 | return -EINVAL; |
Felipe Balbi | f96a6ec | 2011-10-15 21:37:35 +0300 | [diff] [blame] | 578 | } |
| 579 | |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 580 | if (state == USB_STATE_CONFIGURED) { |
Felipe Balbi | 5eb30ce | 2016-11-03 14:07:51 +0200 | [diff] [blame] | 581 | dev_err(dwc->dev, "can't SetAddress() from Configured State\n"); |
Felipe Balbi | f96a6ec | 2011-10-15 21:37:35 +0300 | [diff] [blame] | 582 | return -EINVAL; |
| 583 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 584 | |
Felipe Balbi | 2646021 | 2011-09-30 10:58:36 +0300 | [diff] [blame] | 585 | reg = dwc3_readl(dwc->regs, DWC3_DCFG); |
| 586 | reg &= ~(DWC3_DCFG_DEVADDR_MASK); |
| 587 | reg |= DWC3_DCFG_DEVADDR(addr); |
| 588 | dwc3_writel(dwc->regs, DWC3_DCFG, reg); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 589 | |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 590 | if (addr) |
Felipe Balbi | 14cd592 | 2011-12-19 13:01:52 +0200 | [diff] [blame] | 591 | usb_gadget_set_state(&dwc->gadget, USB_STATE_ADDRESS); |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 592 | else |
Felipe Balbi | 14cd592 | 2011-12-19 13:01:52 +0200 | [diff] [blame] | 593 | usb_gadget_set_state(&dwc->gadget, USB_STATE_DEFAULT); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 594 | |
Felipe Balbi | 2646021 | 2011-09-30 10:58:36 +0300 | [diff] [blame] | 595 | return 0; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 596 | } |
| 597 | |
| 598 | static int dwc3_ep0_delegate_req(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) |
| 599 | { |
| 600 | int ret; |
| 601 | |
| 602 | spin_unlock(&dwc->lock); |
| 603 | ret = dwc->gadget_driver->setup(&dwc->gadget, ctrl); |
| 604 | spin_lock(&dwc->lock); |
| 605 | return ret; |
| 606 | } |
| 607 | |
| 608 | static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) |
| 609 | { |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 610 | enum usb_device_state state = dwc->gadget.state; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 611 | u32 cfg; |
| 612 | int ret; |
Pratyush Anand | e274a31 | 2012-07-02 10:21:54 +0530 | [diff] [blame] | 613 | u32 reg; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 614 | |
| 615 | cfg = le16_to_cpu(ctrl->wValue); |
| 616 | |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 617 | switch (state) { |
| 618 | case USB_STATE_DEFAULT: |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 619 | return -EINVAL; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 620 | |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 621 | case USB_STATE_ADDRESS: |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 622 | ret = dwc3_ep0_delegate_req(dwc, ctrl); |
| 623 | /* if the cfg matches and the cfg is non zero */ |
Felipe Balbi | 457e84b | 2012-01-18 18:04:09 +0200 | [diff] [blame] | 624 | if (cfg && (!ret || (ret == USB_GADGET_DELAYED_STATUS))) { |
Felipe Balbi | 7c81290 | 2013-07-22 12:41:47 +0300 | [diff] [blame] | 625 | |
| 626 | /* |
| 627 | * only change state if set_config has already |
| 628 | * been processed. If gadget driver returns |
| 629 | * USB_GADGET_DELAYED_STATUS, we will wait |
| 630 | * to change the state on the next usb_ep_queue() |
| 631 | */ |
| 632 | if (ret == 0) |
| 633 | usb_gadget_set_state(&dwc->gadget, |
| 634 | USB_STATE_CONFIGURED); |
Felipe Balbi | 14cd592 | 2011-12-19 13:01:52 +0200 | [diff] [blame] | 635 | |
Pratyush Anand | e274a31 | 2012-07-02 10:21:54 +0530 | [diff] [blame] | 636 | /* |
| 637 | * Enable transition to U1/U2 state when |
| 638 | * nothing is pending from application. |
| 639 | */ |
| 640 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); |
| 641 | reg |= (DWC3_DCTL_ACCEPTU1ENA | DWC3_DCTL_ACCEPTU2ENA); |
| 642 | dwc3_writel(dwc->regs, DWC3_DCTL, reg); |
Felipe Balbi | 457e84b | 2012-01-18 18:04:09 +0200 | [diff] [blame] | 643 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 644 | break; |
| 645 | |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 646 | case USB_STATE_CONFIGURED: |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 647 | ret = dwc3_ep0_delegate_req(dwc, ctrl); |
Felipe Balbi | 7a42d83 | 2013-07-22 12:31:31 +0300 | [diff] [blame] | 648 | if (!cfg && !ret) |
Felipe Balbi | 14cd592 | 2011-12-19 13:01:52 +0200 | [diff] [blame] | 649 | usb_gadget_set_state(&dwc->gadget, |
| 650 | USB_STATE_ADDRESS); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 651 | break; |
Sebastian Andrzej Siewior | 5bdb1dc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 652 | default: |
| 653 | ret = -EINVAL; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 654 | } |
Sebastian Andrzej Siewior | 5bdb1dc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 655 | return ret; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 656 | } |
| 657 | |
Felipe Balbi | 865e09e | 2012-04-24 16:19:49 +0300 | [diff] [blame] | 658 | static void dwc3_ep0_set_sel_cmpl(struct usb_ep *ep, struct usb_request *req) |
| 659 | { |
| 660 | struct dwc3_ep *dep = to_dwc3_ep(ep); |
| 661 | struct dwc3 *dwc = dep->dwc; |
| 662 | |
| 663 | u32 param = 0; |
| 664 | u32 reg; |
| 665 | |
| 666 | struct timing { |
| 667 | u8 u1sel; |
| 668 | u8 u1pel; |
John Youn | 501058e | 2016-05-23 11:32:40 -0700 | [diff] [blame] | 669 | __le16 u2sel; |
| 670 | __le16 u2pel; |
Felipe Balbi | 865e09e | 2012-04-24 16:19:49 +0300 | [diff] [blame] | 671 | } __packed timing; |
| 672 | |
| 673 | int ret; |
| 674 | |
| 675 | memcpy(&timing, req->buf, sizeof(timing)); |
| 676 | |
| 677 | dwc->u1sel = timing.u1sel; |
| 678 | dwc->u1pel = timing.u1pel; |
Felipe Balbi | c8cf7af | 2012-05-31 11:00:28 +0300 | [diff] [blame] | 679 | dwc->u2sel = le16_to_cpu(timing.u2sel); |
| 680 | dwc->u2pel = le16_to_cpu(timing.u2pel); |
Felipe Balbi | 865e09e | 2012-04-24 16:19:49 +0300 | [diff] [blame] | 681 | |
| 682 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); |
| 683 | if (reg & DWC3_DCTL_INITU2ENA) |
| 684 | param = dwc->u2pel; |
| 685 | if (reg & DWC3_DCTL_INITU1ENA) |
| 686 | param = dwc->u1pel; |
| 687 | |
| 688 | /* |
| 689 | * According to Synopsys Databook, if parameter is |
| 690 | * greater than 125, a value of zero should be |
| 691 | * programmed in the register. |
| 692 | */ |
| 693 | if (param > 125) |
| 694 | param = 0; |
| 695 | |
| 696 | /* now that we have the time, issue DGCMD Set Sel */ |
| 697 | ret = dwc3_send_gadget_generic_command(dwc, |
| 698 | DWC3_DGCMD_SET_PERIODIC_PAR, param); |
| 699 | WARN_ON(ret < 0); |
| 700 | } |
| 701 | |
| 702 | static int dwc3_ep0_set_sel(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) |
| 703 | { |
| 704 | struct dwc3_ep *dep; |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 705 | enum usb_device_state state = dwc->gadget.state; |
Felipe Balbi | 865e09e | 2012-04-24 16:19:49 +0300 | [diff] [blame] | 706 | u16 wLength; |
| 707 | u16 wValue; |
| 708 | |
Felipe Balbi | fdba5aa | 2013-01-25 11:28:19 +0200 | [diff] [blame] | 709 | if (state == USB_STATE_DEFAULT) |
Felipe Balbi | 865e09e | 2012-04-24 16:19:49 +0300 | [diff] [blame] | 710 | return -EINVAL; |
| 711 | |
| 712 | wValue = le16_to_cpu(ctrl->wValue); |
| 713 | wLength = le16_to_cpu(ctrl->wLength); |
| 714 | |
| 715 | if (wLength != 6) { |
| 716 | dev_err(dwc->dev, "Set SEL should be 6 bytes, got %d\n", |
| 717 | wLength); |
| 718 | return -EINVAL; |
| 719 | } |
| 720 | |
| 721 | /* |
| 722 | * To handle Set SEL we need to receive 6 bytes from Host. So let's |
| 723 | * queue a usb_request for 6 bytes. |
| 724 | * |
| 725 | * Remember, though, this controller can't handle non-wMaxPacketSize |
| 726 | * aligned transfers on the OUT direction, so we queue a request for |
| 727 | * wMaxPacketSize instead. |
| 728 | */ |
| 729 | dep = dwc->eps[0]; |
| 730 | dwc->ep0_usb_req.dep = dep; |
| 731 | dwc->ep0_usb_req.request.length = dep->endpoint.maxpacket; |
| 732 | dwc->ep0_usb_req.request.buf = dwc->setup_buf; |
| 733 | dwc->ep0_usb_req.request.complete = dwc3_ep0_set_sel_cmpl; |
| 734 | |
| 735 | return __dwc3_gadget_ep0_queue(dep, &dwc->ep0_usb_req); |
| 736 | } |
| 737 | |
Felipe Balbi | c12a0d8 | 2012-04-25 10:45:05 +0300 | [diff] [blame] | 738 | static int dwc3_ep0_set_isoch_delay(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) |
| 739 | { |
| 740 | u16 wLength; |
| 741 | u16 wValue; |
| 742 | u16 wIndex; |
| 743 | |
| 744 | wValue = le16_to_cpu(ctrl->wValue); |
| 745 | wLength = le16_to_cpu(ctrl->wLength); |
| 746 | wIndex = le16_to_cpu(ctrl->wIndex); |
| 747 | |
| 748 | if (wIndex || wLength) |
| 749 | return -EINVAL; |
| 750 | |
| 751 | /* |
| 752 | * REVISIT It's unclear from Databook what to do with this |
| 753 | * value. For now, just cache it. |
| 754 | */ |
| 755 | dwc->isoch_delay = wValue; |
| 756 | |
| 757 | return 0; |
| 758 | } |
| 759 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 760 | static int dwc3_ep0_std_request(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) |
| 761 | { |
| 762 | int ret; |
| 763 | |
| 764 | switch (ctrl->bRequest) { |
| 765 | case USB_REQ_GET_STATUS: |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 766 | ret = dwc3_ep0_handle_status(dwc, ctrl); |
| 767 | break; |
| 768 | case USB_REQ_CLEAR_FEATURE: |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 769 | ret = dwc3_ep0_handle_feature(dwc, ctrl, 0); |
| 770 | break; |
| 771 | case USB_REQ_SET_FEATURE: |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 772 | ret = dwc3_ep0_handle_feature(dwc, ctrl, 1); |
| 773 | break; |
| 774 | case USB_REQ_SET_ADDRESS: |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 775 | ret = dwc3_ep0_set_address(dwc, ctrl); |
| 776 | break; |
| 777 | case USB_REQ_SET_CONFIGURATION: |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 778 | ret = dwc3_ep0_set_config(dwc, ctrl); |
| 779 | break; |
Felipe Balbi | 865e09e | 2012-04-24 16:19:49 +0300 | [diff] [blame] | 780 | case USB_REQ_SET_SEL: |
Felipe Balbi | 865e09e | 2012-04-24 16:19:49 +0300 | [diff] [blame] | 781 | ret = dwc3_ep0_set_sel(dwc, ctrl); |
| 782 | break; |
Felipe Balbi | c12a0d8 | 2012-04-25 10:45:05 +0300 | [diff] [blame] | 783 | case USB_REQ_SET_ISOCH_DELAY: |
Felipe Balbi | c12a0d8 | 2012-04-25 10:45:05 +0300 | [diff] [blame] | 784 | ret = dwc3_ep0_set_isoch_delay(dwc, ctrl); |
| 785 | break; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 786 | default: |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 787 | ret = dwc3_ep0_delegate_req(dwc, ctrl); |
| 788 | break; |
Joe Perches | 2b84f92 | 2013-10-08 16:01:37 -0700 | [diff] [blame] | 789 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 790 | |
| 791 | return ret; |
| 792 | } |
| 793 | |
| 794 | static void dwc3_ep0_inspect_setup(struct dwc3 *dwc, |
| 795 | const struct dwc3_event_depevt *event) |
| 796 | { |
| 797 | struct usb_ctrlrequest *ctrl = dwc->ctrl_req; |
Felipe Balbi | ef21ede | 2012-05-31 10:29:49 +0300 | [diff] [blame] | 798 | int ret = -EINVAL; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 799 | u32 len; |
| 800 | |
| 801 | if (!dwc->gadget_driver) |
Felipe Balbi | ef21ede | 2012-05-31 10:29:49 +0300 | [diff] [blame] | 802 | goto out; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 803 | |
Felipe Balbi | 2c4cbe6e5 | 2014-04-30 17:45:10 -0500 | [diff] [blame] | 804 | trace_dwc3_ctrl_req(ctrl); |
| 805 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 806 | len = le16_to_cpu(ctrl->wLength); |
Felipe Balbi | 1ddcb21 | 2011-08-30 15:52:17 +0300 | [diff] [blame] | 807 | if (!len) { |
Felipe Balbi | d95b09b | 2011-09-30 10:58:37 +0300 | [diff] [blame] | 808 | dwc->three_stage_setup = false; |
| 809 | dwc->ep0_expect_in = false; |
Felipe Balbi | 1ddcb21 | 2011-08-30 15:52:17 +0300 | [diff] [blame] | 810 | dwc->ep0_next_event = DWC3_EP0_NRDY_STATUS; |
| 811 | } else { |
Felipe Balbi | d95b09b | 2011-09-30 10:58:37 +0300 | [diff] [blame] | 812 | dwc->three_stage_setup = true; |
| 813 | dwc->ep0_expect_in = !!(ctrl->bRequestType & USB_DIR_IN); |
Felipe Balbi | 1ddcb21 | 2011-08-30 15:52:17 +0300 | [diff] [blame] | 814 | dwc->ep0_next_event = DWC3_EP0_NRDY_DATA; |
| 815 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 816 | |
| 817 | if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) |
| 818 | ret = dwc3_ep0_std_request(dwc, ctrl); |
| 819 | else |
| 820 | ret = dwc3_ep0_delegate_req(dwc, ctrl); |
| 821 | |
Sebastian Andrzej Siewior | 5bdb1dc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 822 | if (ret == USB_GADGET_DELAYED_STATUS) |
| 823 | dwc->delayed_status = true; |
| 824 | |
Felipe Balbi | ef21ede | 2012-05-31 10:29:49 +0300 | [diff] [blame] | 825 | out: |
| 826 | if (ret < 0) |
| 827 | dwc3_ep0_stall_and_restart(dwc); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 828 | } |
| 829 | |
| 830 | static void dwc3_ep0_complete_data(struct dwc3 *dwc, |
| 831 | const struct dwc3_event_depevt *event) |
| 832 | { |
| 833 | struct dwc3_request *r = NULL; |
| 834 | struct usb_request *ur; |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 835 | struct dwc3_trb *trb; |
Sebastian Andrzej Siewior | c2da2ff | 2011-10-20 19:04:16 +0200 | [diff] [blame] | 836 | struct dwc3_ep *ep0; |
Kishon Vijay Abraham I | 8a34422 | 2015-07-27 12:25:29 +0530 | [diff] [blame] | 837 | unsigned transfer_size = 0; |
| 838 | unsigned maxp; |
| 839 | unsigned remaining_ur_length; |
| 840 | void *buf; |
| 841 | u32 transferred = 0; |
Felipe Balbi | fca8892 | 2012-07-19 09:05:35 +0300 | [diff] [blame] | 842 | u32 status; |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 843 | u32 length; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 844 | u8 epnum; |
| 845 | |
| 846 | epnum = event->endpoint_number; |
Sebastian Andrzej Siewior | c2da2ff | 2011-10-20 19:04:16 +0200 | [diff] [blame] | 847 | ep0 = dwc->eps[0]; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 848 | |
Felipe Balbi | 1ddcb21 | 2011-08-30 15:52:17 +0300 | [diff] [blame] | 849 | dwc->ep0_next_event = DWC3_EP0_NRDY_STATUS; |
| 850 | |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 851 | trb = dwc->ep0_trb; |
Felipe Balbi | fca8892 | 2012-07-19 09:05:35 +0300 | [diff] [blame] | 852 | |
Felipe Balbi | ccb072d | 2014-10-01 12:20:29 -0500 | [diff] [blame] | 853 | trace_dwc3_complete_trb(ep0, trb); |
| 854 | |
Felipe Balbi | aa3342c | 2016-03-14 11:01:31 +0200 | [diff] [blame] | 855 | r = next_request(&ep0->pending_list); |
Felipe Balbi | 520fe76 | 2014-11-10 14:39:44 -0600 | [diff] [blame] | 856 | if (!r) |
| 857 | return; |
| 858 | |
Felipe Balbi | fca8892 | 2012-07-19 09:05:35 +0300 | [diff] [blame] | 859 | status = DWC3_TRB_SIZE_TRBSTS(trb->size); |
| 860 | if (status == DWC3_TRBSTS_SETUP_PENDING) { |
Felipe Balbi | b5d335e | 2015-11-16 16:20:34 -0600 | [diff] [blame] | 861 | dwc->setup_packet_pending = true; |
Felipe Balbi | fca8892 | 2012-07-19 09:05:35 +0300 | [diff] [blame] | 862 | if (r) |
| 863 | dwc3_gadget_giveback(ep0, r, -ECONNRESET); |
| 864 | |
| 865 | return; |
| 866 | } |
| 867 | |
Felipe Balbi | 6856d30 | 2014-09-30 11:43:20 -0500 | [diff] [blame] | 868 | ur = &r->request; |
Kishon Vijay Abraham I | 8a34422 | 2015-07-27 12:25:29 +0530 | [diff] [blame] | 869 | buf = ur->buf; |
| 870 | remaining_ur_length = ur->length; |
Felipe Balbi | 6856d30 | 2014-09-30 11:43:20 -0500 | [diff] [blame] | 871 | |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 872 | length = trb->size & DWC3_TRB_SIZE_MASK; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 873 | |
Kishon Vijay Abraham I | 8a34422 | 2015-07-27 12:25:29 +0530 | [diff] [blame] | 874 | maxp = ep0->endpoint.maxpacket; |
| 875 | |
Felipe Balbi | a682970 | 2011-08-27 22:18:09 +0300 | [diff] [blame] | 876 | if (dwc->ep0_bounced) { |
Kishon Vijay Abraham I | c0bd545 | 2015-07-27 12:25:32 +0530 | [diff] [blame] | 877 | /* |
| 878 | * Handle the first TRB before handling the bounce buffer if |
| 879 | * the request length is greater than the bounce buffer size |
| 880 | */ |
| 881 | if (ur->length > DWC3_EP0_BOUNCE_SIZE) { |
| 882 | transfer_size = ALIGN(ur->length - maxp, maxp); |
| 883 | transferred = transfer_size - length; |
| 884 | buf = (u8 *)buf + transferred; |
| 885 | ur->actual += transferred; |
| 886 | remaining_ur_length -= transferred; |
| 887 | |
| 888 | trb++; |
| 889 | length = trb->size & DWC3_TRB_SIZE_MASK; |
| 890 | |
Felipe Balbi | 53fd881 | 2016-04-04 15:33:41 +0300 | [diff] [blame] | 891 | ep0->trb_enqueue = 0; |
Kishon Vijay Abraham I | c0bd545 | 2015-07-27 12:25:32 +0530 | [diff] [blame] | 892 | } |
| 893 | |
Kishon Vijay Abraham I | 8a34422 | 2015-07-27 12:25:29 +0530 | [diff] [blame] | 894 | transfer_size = roundup((ur->length - transfer_size), |
| 895 | maxp); |
Kishon Vijay Abraham I | b2fb5b1 | 2015-07-27 12:25:27 +0530 | [diff] [blame] | 896 | |
Kishon Vijay Abraham I | 8a34422 | 2015-07-27 12:25:29 +0530 | [diff] [blame] | 897 | transferred = min_t(u32, remaining_ur_length, |
| 898 | transfer_size - length); |
| 899 | memcpy(buf, dwc->ep0_bounce, transferred); |
Felipe Balbi | a682970 | 2011-08-27 22:18:09 +0300 | [diff] [blame] | 900 | } else { |
Felipe Balbi | f6bafc6 | 2012-02-06 11:04:53 +0200 | [diff] [blame] | 901 | transferred = ur->length - length; |
Felipe Balbi | a682970 | 2011-08-27 22:18:09 +0300 | [diff] [blame] | 902 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 903 | |
Felipe Balbi | cd423dd | 2012-03-21 11:44:00 +0200 | [diff] [blame] | 904 | ur->actual += transferred; |
| 905 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 906 | if ((epnum & 1) && ur->actual < ur->length) { |
| 907 | /* for some reason we did not get everything out */ |
| 908 | |
| 909 | dwc3_ep0_stall_and_restart(dwc); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 910 | } else { |
Felipe Balbi | 36f84ff | 2014-09-30 10:39:14 -0500 | [diff] [blame] | 911 | dwc3_gadget_giveback(ep0, r, 0); |
| 912 | |
| 913 | if (IS_ALIGNED(ur->length, ep0->endpoint.maxpacket) && |
| 914 | ur->length && ur->zero) { |
| 915 | int ret; |
| 916 | |
| 917 | dwc->ep0_next_event = DWC3_EP0_COMPLETE; |
| 918 | |
Felipe Balbi | 19ec312 | 2016-12-20 14:08:48 +0200 | [diff] [blame] | 919 | dwc3_ep0_prepare_one_trb(dwc, epnum, dwc->ctrl_req_addr, |
| 920 | 0, DWC3_TRBCTL_CONTROL_DATA, false); |
| 921 | ret = dwc3_ep0_start_trans(dwc, epnum); |
Felipe Balbi | 36f84ff | 2014-09-30 10:39:14 -0500 | [diff] [blame] | 922 | WARN_ON(ret < 0); |
| 923 | } |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 924 | } |
| 925 | } |
| 926 | |
Felipe Balbi | 85a7810 | 2012-05-31 12:32:37 +0300 | [diff] [blame] | 927 | static void dwc3_ep0_complete_status(struct dwc3 *dwc, |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 928 | const struct dwc3_event_depevt *event) |
| 929 | { |
| 930 | struct dwc3_request *r; |
| 931 | struct dwc3_ep *dep; |
Felipe Balbi | fca8892 | 2012-07-19 09:05:35 +0300 | [diff] [blame] | 932 | struct dwc3_trb *trb; |
| 933 | u32 status; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 934 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 935 | dep = dwc->eps[0]; |
Felipe Balbi | fca8892 | 2012-07-19 09:05:35 +0300 | [diff] [blame] | 936 | trb = dwc->ep0_trb; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 937 | |
Felipe Balbi | ccb072d | 2014-10-01 12:20:29 -0500 | [diff] [blame] | 938 | trace_dwc3_complete_trb(dep, trb); |
| 939 | |
Felipe Balbi | aa3342c | 2016-03-14 11:01:31 +0200 | [diff] [blame] | 940 | if (!list_empty(&dep->pending_list)) { |
| 941 | r = next_request(&dep->pending_list); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 942 | |
| 943 | dwc3_gadget_giveback(dep, r, 0); |
| 944 | } |
| 945 | |
Gerard Cauvy | 3b63736 | 2012-02-10 12:21:18 +0200 | [diff] [blame] | 946 | if (dwc->test_mode) { |
| 947 | int ret; |
| 948 | |
| 949 | ret = dwc3_gadget_set_test_mode(dwc, dwc->test_mode_nr); |
| 950 | if (ret < 0) { |
Felipe Balbi | 5eb30ce | 2016-11-03 14:07:51 +0200 | [diff] [blame] | 951 | dev_err(dwc->dev, "invalid test #%d\n", |
Gerard Cauvy | 3b63736 | 2012-02-10 12:21:18 +0200 | [diff] [blame] | 952 | dwc->test_mode_nr); |
| 953 | dwc3_ep0_stall_and_restart(dwc); |
Felipe Balbi | 5c81aba | 2012-06-25 19:30:49 +0300 | [diff] [blame] | 954 | return; |
Gerard Cauvy | 3b63736 | 2012-02-10 12:21:18 +0200 | [diff] [blame] | 955 | } |
| 956 | } |
| 957 | |
Felipe Balbi | fca8892 | 2012-07-19 09:05:35 +0300 | [diff] [blame] | 958 | status = DWC3_TRB_SIZE_TRBSTS(trb->size); |
Felipe Balbi | 5eb30ce | 2016-11-03 14:07:51 +0200 | [diff] [blame] | 959 | if (status == DWC3_TRBSTS_SETUP_PENDING) |
Felipe Balbi | b5d335e | 2015-11-16 16:20:34 -0600 | [diff] [blame] | 960 | dwc->setup_packet_pending = true; |
Felipe Balbi | fca8892 | 2012-07-19 09:05:35 +0300 | [diff] [blame] | 961 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 962 | dwc->ep0state = EP0_SETUP_PHASE; |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 963 | dwc3_ep0_out_start(dwc); |
| 964 | } |
| 965 | |
| 966 | static void dwc3_ep0_xfer_complete(struct dwc3 *dwc, |
| 967 | const struct dwc3_event_depevt *event) |
| 968 | { |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 969 | struct dwc3_ep *dep = dwc->eps[event->endpoint_number]; |
| 970 | |
| 971 | dep->flags &= ~DWC3_EP_BUSY; |
Felipe Balbi | b4996a8 | 2012-06-06 12:04:13 +0300 | [diff] [blame] | 972 | dep->resource_index = 0; |
Felipe Balbi | df62df5 | 2011-10-14 15:11:49 +0300 | [diff] [blame] | 973 | dwc->setup_packet_pending = false; |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 974 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 975 | switch (dwc->ep0state) { |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 976 | case EP0_SETUP_PHASE: |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 977 | dwc3_ep0_inspect_setup(dwc, event); |
| 978 | break; |
| 979 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 980 | case EP0_DATA_PHASE: |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 981 | dwc3_ep0_complete_data(dwc, event); |
| 982 | break; |
| 983 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 984 | case EP0_STATUS_PHASE: |
Felipe Balbi | 85a7810 | 2012-05-31 12:32:37 +0300 | [diff] [blame] | 985 | dwc3_ep0_complete_status(dwc, event); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 986 | break; |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 987 | default: |
| 988 | WARN(true, "UNKNOWN ep0state %d\n", dwc->ep0state); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 989 | } |
| 990 | } |
| 991 | |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 992 | static void __dwc3_ep0_do_control_data(struct dwc3 *dwc, |
| 993 | struct dwc3_ep *dep, struct dwc3_request *req) |
| 994 | { |
| 995 | int ret; |
| 996 | |
| 997 | req->direction = !!dep->number; |
| 998 | |
| 999 | if (req->request.length == 0) { |
Felipe Balbi | 19ec312 | 2016-12-20 14:08:48 +0200 | [diff] [blame] | 1000 | dwc3_ep0_prepare_one_trb(dwc, dep->number, |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 1001 | dwc->ctrl_req_addr, 0, |
Kishon Vijay Abraham I | 368ca11 | 2015-07-27 12:25:30 +0530 | [diff] [blame] | 1002 | DWC3_TRBCTL_CONTROL_DATA, false); |
Felipe Balbi | 19ec312 | 2016-12-20 14:08:48 +0200 | [diff] [blame] | 1003 | ret = dwc3_ep0_start_trans(dwc, dep->number); |
Felipe Balbi | c74c6d4 | 2012-05-04 13:08:22 +0300 | [diff] [blame] | 1004 | } else if (!IS_ALIGNED(req->request.length, dep->endpoint.maxpacket) |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 1005 | && (dep->number == 0)) { |
Kishon Vijay Abraham I | 8a34422 | 2015-07-27 12:25:29 +0530 | [diff] [blame] | 1006 | u32 transfer_size = 0; |
Andrew Morton | c390b03 | 2013-03-08 09:42:50 +0200 | [diff] [blame] | 1007 | u32 maxpacket; |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 1008 | |
Arnd Bergmann | d64ff40 | 2016-11-17 17:13:47 +0530 | [diff] [blame] | 1009 | ret = usb_gadget_map_request_by_dev(dwc->sysdev, |
| 1010 | &req->request, dep->number); |
Felipe Balbi | 5eb30ce | 2016-11-03 14:07:51 +0200 | [diff] [blame] | 1011 | if (ret) |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 1012 | return; |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 1013 | |
Andrew Morton | c390b03 | 2013-03-08 09:42:50 +0200 | [diff] [blame] | 1014 | maxpacket = dep->endpoint.maxpacket; |
Kishon Vijay Abraham I | c0bd545 | 2015-07-27 12:25:32 +0530 | [diff] [blame] | 1015 | |
| 1016 | if (req->request.length > DWC3_EP0_BOUNCE_SIZE) { |
| 1017 | transfer_size = ALIGN(req->request.length - maxpacket, |
| 1018 | maxpacket); |
Felipe Balbi | 19ec312 | 2016-12-20 14:08:48 +0200 | [diff] [blame] | 1019 | dwc3_ep0_prepare_one_trb(dwc, dep->number, |
Kishon Vijay Abraham I | c0bd545 | 2015-07-27 12:25:32 +0530 | [diff] [blame] | 1020 | req->request.dma, |
| 1021 | transfer_size, |
| 1022 | DWC3_TRBCTL_CONTROL_DATA, |
| 1023 | true); |
| 1024 | } |
| 1025 | |
Kishon Vijay Abraham I | 8a34422 | 2015-07-27 12:25:29 +0530 | [diff] [blame] | 1026 | transfer_size = roundup((req->request.length - transfer_size), |
| 1027 | maxpacket); |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 1028 | |
| 1029 | dwc->ep0_bounced = true; |
| 1030 | |
Felipe Balbi | 19ec312 | 2016-12-20 14:08:48 +0200 | [diff] [blame] | 1031 | dwc3_ep0_prepare_one_trb(dwc, dep->number, |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 1032 | dwc->ep0_bounce_addr, transfer_size, |
Kishon Vijay Abraham I | 368ca11 | 2015-07-27 12:25:30 +0530 | [diff] [blame] | 1033 | DWC3_TRBCTL_CONTROL_DATA, false); |
Felipe Balbi | 19ec312 | 2016-12-20 14:08:48 +0200 | [diff] [blame] | 1034 | ret = dwc3_ep0_start_trans(dwc, dep->number); |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 1035 | } else { |
Arnd Bergmann | d64ff40 | 2016-11-17 17:13:47 +0530 | [diff] [blame] | 1036 | ret = usb_gadget_map_request_by_dev(dwc->sysdev, |
| 1037 | &req->request, dep->number); |
Felipe Balbi | 5eb30ce | 2016-11-03 14:07:51 +0200 | [diff] [blame] | 1038 | if (ret) |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 1039 | return; |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 1040 | |
Felipe Balbi | 19ec312 | 2016-12-20 14:08:48 +0200 | [diff] [blame] | 1041 | dwc3_ep0_prepare_one_trb(dwc, dep->number, req->request.dma, |
Kishon Vijay Abraham I | 368ca11 | 2015-07-27 12:25:30 +0530 | [diff] [blame] | 1042 | req->request.length, DWC3_TRBCTL_CONTROL_DATA, |
| 1043 | false); |
Felipe Balbi | 19ec312 | 2016-12-20 14:08:48 +0200 | [diff] [blame] | 1044 | ret = dwc3_ep0_start_trans(dwc, dep->number); |
Felipe Balbi | a080788 | 2012-05-04 13:03:54 +0300 | [diff] [blame] | 1045 | } |
| 1046 | |
| 1047 | WARN_ON(ret < 0); |
| 1048 | } |
| 1049 | |
Sebastian Andrzej Siewior | f0f2b2a | 2011-11-02 13:30:44 +0100 | [diff] [blame] | 1050 | static int dwc3_ep0_start_control_status(struct dwc3_ep *dep) |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 1051 | { |
Sebastian Andrzej Siewior | f0f2b2a | 2011-11-02 13:30:44 +0100 | [diff] [blame] | 1052 | struct dwc3 *dwc = dep->dwc; |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 1053 | u32 type; |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 1054 | |
| 1055 | type = dwc->three_stage_setup ? DWC3_TRBCTL_CONTROL_STATUS3 |
| 1056 | : DWC3_TRBCTL_CONTROL_STATUS2; |
| 1057 | |
Felipe Balbi | 19ec312 | 2016-12-20 14:08:48 +0200 | [diff] [blame] | 1058 | dwc3_ep0_prepare_one_trb(dwc, dep->number, |
Kishon Vijay Abraham I | 368ca11 | 2015-07-27 12:25:30 +0530 | [diff] [blame] | 1059 | dwc->ctrl_req_addr, 0, type, false); |
Felipe Balbi | 19ec312 | 2016-12-20 14:08:48 +0200 | [diff] [blame] | 1060 | return dwc3_ep0_start_trans(dwc, dep->number); |
Sebastian Andrzej Siewior | f0f2b2a | 2011-11-02 13:30:44 +0100 | [diff] [blame] | 1061 | } |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 1062 | |
Felipe Balbi | 788a23f | 2012-05-21 14:22:41 +0300 | [diff] [blame] | 1063 | 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] | 1064 | { |
Sebastian Andrzej Siewior | f0f2b2a | 2011-11-02 13:30:44 +0100 | [diff] [blame] | 1065 | WARN_ON(dwc3_ep0_start_control_status(dep)); |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 1066 | } |
| 1067 | |
Felipe Balbi | 788a23f | 2012-05-21 14:22:41 +0300 | [diff] [blame] | 1068 | static void dwc3_ep0_do_control_status(struct dwc3 *dwc, |
| 1069 | const struct dwc3_event_depevt *event) |
| 1070 | { |
| 1071 | struct dwc3_ep *dep = dwc->eps[event->endpoint_number]; |
| 1072 | |
| 1073 | __dwc3_ep0_do_control_status(dwc, dep); |
| 1074 | } |
| 1075 | |
Felipe Balbi | 2e3db06 | 2012-07-19 09:26:59 +0300 | [diff] [blame] | 1076 | static void dwc3_ep0_end_control_data(struct dwc3 *dwc, struct dwc3_ep *dep) |
| 1077 | { |
| 1078 | struct dwc3_gadget_ep_cmd_params params; |
| 1079 | u32 cmd; |
| 1080 | int ret; |
| 1081 | |
| 1082 | if (!dep->resource_index) |
| 1083 | return; |
| 1084 | |
| 1085 | cmd = DWC3_DEPCMD_ENDTRANSFER; |
| 1086 | cmd |= DWC3_DEPCMD_CMDIOC; |
| 1087 | cmd |= DWC3_DEPCMD_PARAM(dep->resource_index); |
| 1088 | memset(¶ms, 0, sizeof(params)); |
Felipe Balbi | 2cd4718 | 2016-04-12 16:42:43 +0300 | [diff] [blame] | 1089 | ret = dwc3_send_gadget_ep_cmd(dep, cmd, ¶ms); |
Felipe Balbi | 2e3db06 | 2012-07-19 09:26:59 +0300 | [diff] [blame] | 1090 | WARN_ON_ONCE(ret); |
| 1091 | dep->resource_index = 0; |
| 1092 | } |
| 1093 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1094 | static void dwc3_ep0_xfernotready(struct dwc3 *dwc, |
| 1095 | const struct dwc3_event_depevt *event) |
| 1096 | { |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 1097 | switch (event->status) { |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 1098 | case DEPEVT_STATUS_CONTROL_DATA: |
Felipe Balbi | 55f3fba | 2011-09-08 18:27:33 +0300 | [diff] [blame] | 1099 | /* |
Felipe Balbi | 2e3db06 | 2012-07-19 09:26:59 +0300 | [diff] [blame] | 1100 | * We already have a DATA transfer in the controller's cache, |
| 1101 | * if we receive a XferNotReady(DATA) we will ignore it, unless |
| 1102 | * it's for the wrong direction. |
Felipe Balbi | 55f3fba | 2011-09-08 18:27:33 +0300 | [diff] [blame] | 1103 | * |
Felipe Balbi | 2e3db06 | 2012-07-19 09:26:59 +0300 | [diff] [blame] | 1104 | * In that case, we must issue END_TRANSFER command to the Data |
| 1105 | * Phase we already have started and issue SetStall on the |
| 1106 | * control endpoint. |
Felipe Balbi | 55f3fba | 2011-09-08 18:27:33 +0300 | [diff] [blame] | 1107 | */ |
| 1108 | if (dwc->ep0_expect_in != event->endpoint_number) { |
Felipe Balbi | 2e3db06 | 2012-07-19 09:26:59 +0300 | [diff] [blame] | 1109 | struct dwc3_ep *dep = dwc->eps[dwc->ep0_expect_in]; |
| 1110 | |
Felipe Balbi | 5eb30ce | 2016-11-03 14:07:51 +0200 | [diff] [blame] | 1111 | dev_err(dwc->dev, "unexpected direction for Data Phase\n"); |
Felipe Balbi | 2e3db06 | 2012-07-19 09:26:59 +0300 | [diff] [blame] | 1112 | dwc3_ep0_end_control_data(dwc, dep); |
Felipe Balbi | 55f3fba | 2011-09-08 18:27:33 +0300 | [diff] [blame] | 1113 | dwc3_ep0_stall_and_restart(dwc); |
| 1114 | return; |
| 1115 | } |
| 1116 | |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1117 | break; |
Felipe Balbi | 1ddcb21 | 2011-08-30 15:52:17 +0300 | [diff] [blame] | 1118 | |
Felipe Balbi | c7fcdeb | 2011-08-27 22:28:36 +0300 | [diff] [blame] | 1119 | case DEPEVT_STATUS_CONTROL_STATUS: |
Felipe Balbi | 77fa6df | 2012-07-23 09:09:32 +0300 | [diff] [blame] | 1120 | if (dwc->ep0_next_event != DWC3_EP0_NRDY_STATUS) |
| 1121 | return; |
| 1122 | |
Sebastian Andrzej Siewior | f0f2b2a | 2011-11-02 13:30:44 +0100 | [diff] [blame] | 1123 | dwc->ep0state = EP0_STATUS_PHASE; |
| 1124 | |
Sebastian Andrzej Siewior | 5bdb1dc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 1125 | if (dwc->delayed_status) { |
Baolin Wang | 5389679 | 2017-01-14 16:40:39 +0800 | [diff] [blame] | 1126 | struct dwc3_ep *dep = dwc->eps[0]; |
| 1127 | |
Sebastian Andrzej Siewior | 5bdb1dc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 1128 | WARN_ON_ONCE(event->endpoint_number != 1); |
Baolin Wang | 5389679 | 2017-01-14 16:40:39 +0800 | [diff] [blame] | 1129 | /* |
| 1130 | * We should handle the delay STATUS phase here if the |
| 1131 | * request for handling delay STATUS has been queued |
| 1132 | * into the list. |
| 1133 | */ |
| 1134 | if (!list_empty(&dep->pending_list)) { |
| 1135 | dwc->delayed_status = false; |
| 1136 | usb_gadget_set_state(&dwc->gadget, |
| 1137 | USB_STATE_CONFIGURED); |
| 1138 | dwc3_ep0_do_control_status(dwc, event); |
| 1139 | } |
| 1140 | |
Sebastian Andrzej Siewior | 5bdb1dc | 2011-11-02 13:30:45 +0100 | [diff] [blame] | 1141 | return; |
| 1142 | } |
| 1143 | |
Felipe Balbi | 788a23f | 2012-05-21 14:22:41 +0300 | [diff] [blame] | 1144 | dwc3_ep0_do_control_status(dwc, event); |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1145 | } |
| 1146 | } |
| 1147 | |
| 1148 | void dwc3_ep0_interrupt(struct dwc3 *dwc, |
Felipe Balbi | 8becf27 | 2011-11-04 12:40:05 +0200 | [diff] [blame] | 1149 | const struct dwc3_event_depevt *event) |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1150 | { |
Felipe Balbi | 72246da | 2011-08-19 18:10:58 +0300 | [diff] [blame] | 1151 | switch (event->endpoint_event) { |
| 1152 | case DWC3_DEPEVT_XFERCOMPLETE: |
| 1153 | dwc3_ep0_xfer_complete(dwc, event); |
| 1154 | break; |
| 1155 | |
| 1156 | case DWC3_DEPEVT_XFERNOTREADY: |
| 1157 | dwc3_ep0_xfernotready(dwc, event); |
| 1158 | break; |
| 1159 | |
| 1160 | case DWC3_DEPEVT_XFERINPROGRESS: |
| 1161 | case DWC3_DEPEVT_RXTXFIFOEVT: |
| 1162 | case DWC3_DEPEVT_STREAMEVT: |
| 1163 | case DWC3_DEPEVT_EPCMDCMPLT: |
| 1164 | break; |
| 1165 | } |
| 1166 | } |