Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the libpayload project. |
| 3 | * |
| 4 | * Copyright (C) 2010 coresystems GmbH |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * 3. The name of the author may not be used to endorse or promote products |
| 15 | * derived from this software without specific prior written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 27 | * SUCH DAMAGE. |
| 28 | */ |
| 29 | |
| 30 | #include <libpayload.h> |
| 31 | #include "ehci.h" |
| 32 | #include "ehci_private.h" |
| 33 | |
Stefan Reinauer | 528b43d | 2011-04-14 19:52:04 +0000 | [diff] [blame] | 34 | static void dump_td(u32 addr) |
| 35 | { |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 36 | qtd_t *td = phys_to_virt(addr); |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 37 | debug("td at phys(%x): status: %x\n\n", addr, td->token & QTD_STATUS_MASK); |
| 38 | debug("- cerr: %x, total_len: %x\n\n", (td->token & QTD_CERR_MASK) >> QTD_CERR_SHIFT, |
| 39 | (td->token & QTD_TOTAL_LEN_MASK) >> QTD_TOTAL_LEN_SHIFT); |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 40 | } |
| 41 | |
| 42 | static void ehci_start (hci_t *controller) |
| 43 | { |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 44 | EHCI_INST(controller)->operation->usbcmd |= HC_OP_RS; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 45 | } |
| 46 | |
| 47 | static void ehci_stop (hci_t *controller) |
| 48 | { |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 49 | EHCI_INST(controller)->operation->usbcmd &= ~HC_OP_RS; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 50 | } |
| 51 | |
| 52 | static void ehci_reset (hci_t *controller) |
| 53 | { |
| 54 | |
| 55 | } |
| 56 | |
Nico Huber | 62eb5b3 | 2012-05-25 10:09:13 +0200 | [diff] [blame] | 57 | static int ehci_set_periodic_schedule(ehci_t *ehcic, int enable) |
| 58 | { |
| 59 | /* Set periodic schedule status. */ |
| 60 | if (enable) |
| 61 | ehcic->operation->usbcmd |= HC_OP_PERIODIC_SCHED_EN; |
| 62 | else |
| 63 | ehcic->operation->usbcmd &= ~HC_OP_PERIODIC_SCHED_EN; |
| 64 | /* Wait for the controller to accept periodic schedule status. |
| 65 | * This shouldn't take too long, but we should timeout nevertheless. |
| 66 | */ |
| 67 | enable = enable ? HC_OP_PERIODIC_SCHED_STAT : 0; |
| 68 | int timeout = 100; /* time out after 100ms */ |
| 69 | while (((ehcic->operation->usbsts & HC_OP_PERIODIC_SCHED_STAT) != enable) |
| 70 | && timeout--) |
| 71 | mdelay(1); |
| 72 | if (timeout < 0) { |
| 73 | debug("ehci periodic schedule status change timed out.\n"); |
| 74 | return 1; |
| 75 | } |
| 76 | return 0; |
| 77 | } |
| 78 | |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 79 | static void ehci_shutdown (hci_t *controller) |
| 80 | { |
Nico Huber | 62eb5b3 | 2012-05-25 10:09:13 +0200 | [diff] [blame] | 81 | /* Make sure periodic schedule is disabled */ |
| 82 | ehci_set_periodic_schedule(EHCI_INST(controller), 0); |
| 83 | /* Free periodic frame list */ |
| 84 | free(phys_to_virt(EHCI_INST(controller)->operation->periodiclistbase)); |
| 85 | |
Patrick Georgi | 01178bb | 2011-11-04 11:57:46 +0100 | [diff] [blame] | 86 | EHCI_INST(controller)->operation->configflag = 0; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 87 | } |
| 88 | |
| 89 | enum { EHCI_OUT=0, EHCI_IN=1, EHCI_SETUP=2 }; |
| 90 | |
Nico Huber | 1ab6075 | 2012-05-23 09:21:54 +0200 | [diff] [blame] | 91 | /* |
| 92 | * returns the address of the closest USB2.0 hub, which is responsible for |
| 93 | * split transactions, along with the number of the used downstream port |
| 94 | */ |
| 95 | static int closest_usb2_hub(const usbdev_t *dev, int *const addr, int *const port) |
| 96 | { |
| 97 | const usbdev_t *usb1dev; |
| 98 | do { |
| 99 | usb1dev = dev; |
| 100 | if ((dev->hub > 0) && (dev->hub < 128)) |
| 101 | dev = dev->controller->devices[dev->hub]; |
| 102 | else |
| 103 | dev = NULL; |
| 104 | } while (dev && (dev->speed < 2)); |
| 105 | if (dev) { |
| 106 | *addr = usb1dev->hub; |
| 107 | *port = usb1dev->port; |
| 108 | return 0; |
| 109 | } else { |
| 110 | debug("ehci: Couldn't find closest USB2.0 hub.\n"); |
| 111 | return 1; |
| 112 | } |
| 113 | } |
| 114 | |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 115 | /* returns handled bytes. assumes that the fields it writes are empty on entry */ |
| 116 | static int fill_td(qtd_t *td, void* data, int datalen) |
Stefan Reinauer | 528b43d | 2011-04-14 19:52:04 +0000 | [diff] [blame] | 117 | { |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 118 | u32 total_len = 0; |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 119 | u32 page_no = 0; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 120 | |
| 121 | u32 start = virt_to_phys(data); |
| 122 | u32 page = start & ~4095; |
| 123 | u32 offset = start & 4095; |
| 124 | u32 page_len = 4096 - offset; |
| 125 | |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 126 | td->token |= 0 << QTD_CPAGE_SHIFT; |
| 127 | td->bufptrs[page_no++] = start; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 128 | |
| 129 | if (datalen <= page_len) { |
| 130 | total_len = datalen; |
| 131 | } else { |
| 132 | datalen -= page_len; |
| 133 | total_len += page_len; |
| 134 | |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 135 | while (page_no < 5) { |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 136 | /* we have a continguous mapping between virtual and physical memory */ |
| 137 | page += 4096; |
| 138 | |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 139 | td->bufptrs[page_no++] = page; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 140 | if (datalen <= 4096) { |
| 141 | total_len += datalen; |
| 142 | break; |
| 143 | } |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 144 | datalen -= 4096; |
| 145 | total_len += 4096; |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 146 | } |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 147 | } |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 148 | td->token |= total_len << QTD_TOTAL_LEN_SHIFT; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 149 | return total_len; |
| 150 | } |
| 151 | |
| 152 | /* free up data structures */ |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 153 | static void free_qh_and_tds(ehci_qh_t *qh, qtd_t *cur) |
Stefan Reinauer | 528b43d | 2011-04-14 19:52:04 +0000 | [diff] [blame] | 154 | { |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 155 | qtd_t *next; |
| 156 | while (cur) { |
| 157 | next = (qtd_t*)phys_to_virt(cur->next_qtd & ~31); |
| 158 | free(cur); |
| 159 | cur = next; |
| 160 | } |
| 161 | free(qh); |
| 162 | } |
| 163 | |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 164 | static int wait_for_tds(qtd_t *head) |
Stefan Reinauer | 528b43d | 2011-04-14 19:52:04 +0000 | [diff] [blame] | 165 | { |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 166 | int result = 0; |
| 167 | qtd_t *cur = head; |
| 168 | while (1) { |
| 169 | if (0) dump_td(virt_to_phys(cur)); |
Nico Huber | 0421dc8 | 2012-05-21 14:53:43 +0200 | [diff] [blame^] | 170 | |
| 171 | /* wait for results */ |
| 172 | /* TOTEST: how long to wait? |
| 173 | * tested with some USB2.0 flash sticks: |
| 174 | * slowest took around 180ms |
| 175 | */ |
| 176 | int timeout = 10000; /* time out after 10000 * 50us == 500ms */ |
| 177 | while ((cur->token & QTD_ACTIVE) && !(cur->token & QTD_HALTED) |
| 178 | && timeout--) |
| 179 | udelay(50); |
| 180 | if (timeout < 0) { |
| 181 | printf("Error: ehci: queue transfer " |
| 182 | "processing timed out.\n"); |
| 183 | return 1; |
| 184 | } |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 185 | if (cur->token & QTD_HALTED) { |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 186 | printf("ERROR with packet\n"); |
| 187 | dump_td(virt_to_phys(cur)); |
Mathias Krause | c4716b4 | 2011-06-08 15:36:55 +0200 | [diff] [blame] | 188 | debug("-----------------\n"); |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 189 | return 1; |
| 190 | } |
| 191 | if (cur->next_qtd & 1) { |
| 192 | return 0; |
| 193 | } |
| 194 | if (0) dump_td(virt_to_phys(cur)); |
| 195 | /* helps debugging the TD chain */ |
Mathias Krause | c4716b4 | 2011-06-08 15:36:55 +0200 | [diff] [blame] | 196 | if (0) debug("\nmoving from %x to %x\n", cur, phys_to_virt(cur->next_qtd)); |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 197 | cur = phys_to_virt(cur->next_qtd); |
| 198 | } |
| 199 | return result; |
| 200 | } |
| 201 | |
Nico Huber | 0421dc8 | 2012-05-21 14:53:43 +0200 | [diff] [blame^] | 202 | static int ehci_set_async_schedule(ehci_t *ehcic, int enable) |
| 203 | { |
| 204 | /* Set async schedule status. */ |
| 205 | if (enable) |
| 206 | ehcic->operation->usbcmd |= HC_OP_ASYNC_SCHED_EN; |
| 207 | else |
| 208 | ehcic->operation->usbcmd &= ~HC_OP_ASYNC_SCHED_EN; |
| 209 | /* Wait for the controller to accept async schedule status. |
| 210 | * This shouldn't take too long, but we should timeout nevertheless. |
| 211 | */ |
| 212 | enable = enable ? HC_OP_ASYNC_SCHED_STAT : 0; |
| 213 | int timeout = 100; /* time out after 100ms */ |
| 214 | while (((ehcic->operation->usbsts & HC_OP_ASYNC_SCHED_STAT) != enable) |
| 215 | && timeout--) |
| 216 | mdelay(1); |
| 217 | if (timeout < 0) { |
| 218 | debug("ehci async schedule status change timed out.\n"); |
| 219 | return 1; |
| 220 | } |
| 221 | return 0; |
| 222 | } |
| 223 | |
| 224 | static int ehci_process_async_schedule( |
| 225 | ehci_t *ehcic, ehci_qh_t *qhead, qtd_t *head) |
| 226 | { |
| 227 | int result; |
| 228 | |
| 229 | /* make sure async schedule is disabled */ |
| 230 | if (ehci_set_async_schedule(ehcic, 0)) return 1; |
| 231 | |
| 232 | /* hook up QH */ |
| 233 | ehcic->operation->asynclistaddr = virt_to_phys(qhead); |
| 234 | |
| 235 | /* start async schedule */ |
| 236 | if (ehci_set_async_schedule(ehcic, 1)) return 1; |
| 237 | |
| 238 | /* wait for result */ |
| 239 | result = wait_for_tds(head); |
| 240 | |
| 241 | /* disable async schedule */ |
| 242 | ehci_set_async_schedule(ehcic, 0); |
| 243 | |
| 244 | return result; |
| 245 | } |
| 246 | |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 247 | static int ehci_bulk (endpoint_t *ep, int size, u8 *data, int finalize) |
| 248 | { |
| 249 | int result = 0; |
| 250 | int endp = ep->endpoint & 0xf; |
| 251 | int pid = (ep->direction==IN)?EHCI_IN:EHCI_OUT; |
| 252 | |
Nico Huber | 1ab6075 | 2012-05-23 09:21:54 +0200 | [diff] [blame] | 253 | int hubaddr = 0, hubport = 0; |
| 254 | if (ep->dev->speed < 2) { |
| 255 | /* we need a split transaction */ |
| 256 | if (closest_usb2_hub(ep->dev, &hubaddr, &hubport)) |
| 257 | return 1; |
| 258 | } |
| 259 | |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 260 | qtd_t *head = memalign(32, sizeof(qtd_t)); |
| 261 | qtd_t *cur = head; |
| 262 | while (1) { |
| 263 | memset(cur, 0, sizeof(qtd_t)); |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 264 | cur->token = QTD_ACTIVE | |
| 265 | (pid << QTD_PID_SHIFT) | |
| 266 | (0 << QTD_CERR_SHIFT); |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 267 | u32 chunk = fill_td(cur, data, size); |
| 268 | size -= chunk; |
| 269 | data += chunk; |
| 270 | |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 271 | cur->alt_next_qtd = QTD_TERMINATE; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 272 | if (size == 0) { |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 273 | cur->next_qtd = virt_to_phys(0) | QTD_TERMINATE; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 274 | break; |
| 275 | } else { |
| 276 | qtd_t *next = memalign(32, sizeof(qtd_t)); |
| 277 | cur->next_qtd = virt_to_phys(next); |
| 278 | cur = next; |
| 279 | } |
| 280 | } |
| 281 | |
| 282 | /* create QH */ |
| 283 | ehci_qh_t *qh = memalign(32, sizeof(ehci_qh_t)); |
| 284 | memset(qh, 0, sizeof(ehci_qh_t)); |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 285 | qh->horiz_link_ptr = virt_to_phys(qh) | QH_QH; |
| 286 | qh->epchar = ep->dev->address | |
| 287 | (endp << QH_EP_SHIFT) | |
| 288 | (ep->dev->speed << QH_EPS_SHIFT) | |
| 289 | (0 << QH_DTC_SHIFT) | |
| 290 | (1 << QH_RECLAIM_HEAD_SHIFT) | |
| 291 | (ep->maxpacketsize << QH_MPS_SHIFT) | |
| 292 | (0 << QH_NAK_CNT_SHIFT); |
Nico Huber | 1ab6075 | 2012-05-23 09:21:54 +0200 | [diff] [blame] | 293 | qh->epcaps = (3 << QH_PIPE_MULTIPLIER_SHIFT) | |
| 294 | (hubport << QH_PORT_NUMBER_SHIFT) | |
| 295 | (hubaddr << QH_HUB_ADDRESS_SHIFT); |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 296 | |
| 297 | qh->td.next_qtd = virt_to_phys(head); |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 298 | qh->td.token |= (ep->toggle?QTD_TOGGLE_DATA1:0); |
| 299 | head->token |= (ep->toggle?QTD_TOGGLE_DATA1:0); |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 300 | |
Nico Huber | 0421dc8 | 2012-05-21 14:53:43 +0200 | [diff] [blame^] | 301 | result = ehci_process_async_schedule( |
| 302 | EHCI_INST(ep->dev->controller), qh, head); |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 303 | |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 304 | ep->toggle = (cur->token & QTD_TOGGLE_MASK) >> QTD_TOGGLE_SHIFT; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 305 | |
| 306 | free_qh_and_tds(qh, head); |
| 307 | return result; |
| 308 | } |
| 309 | |
| 310 | |
| 311 | /* FIXME: Handle control transfers as 3 QHs, so the 2nd stage can be >0x4000 bytes */ |
| 312 | static int ehci_control (usbdev_t *dev, direction_t dir, int drlen, void *devreq, |
| 313 | int dalen, u8 *data) |
| 314 | { |
| 315 | int endp = 0; // this is control. always 0 (for now) |
| 316 | int toggle = 0; |
| 317 | int mlen = dev->endpoints[0].maxpacketsize; |
| 318 | int result = 0; |
| 319 | |
Nico Huber | 1ab6075 | 2012-05-23 09:21:54 +0200 | [diff] [blame] | 320 | int hubaddr = 0, hubport = 0, non_hs_ctrl_ep = 0; |
| 321 | if (dev->speed < 2) { |
| 322 | /* we need a split transaction */ |
| 323 | if (closest_usb2_hub(dev, &hubaddr, &hubport)) |
| 324 | return 1; |
| 325 | non_hs_ctrl_ep = 1; |
| 326 | } |
| 327 | |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 328 | /* create qTDs */ |
| 329 | qtd_t *head = memalign(32, sizeof(qtd_t)); |
| 330 | qtd_t *cur = head; |
| 331 | memset(cur, 0, sizeof(qtd_t)); |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 332 | cur->token = QTD_ACTIVE | |
| 333 | (toggle?QTD_TOGGLE_DATA1:0) | |
| 334 | (EHCI_SETUP << QTD_PID_SHIFT) | |
| 335 | (3 << QTD_CERR_SHIFT); |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 336 | if (fill_td(cur, devreq, drlen) != drlen) { |
| 337 | printf("ERROR: couldn't send the entire device request\n"); |
| 338 | } |
| 339 | qtd_t *next = memalign(32, sizeof(qtd_t)); |
| 340 | cur->next_qtd = virt_to_phys(next); |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 341 | cur->alt_next_qtd = QTD_TERMINATE; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 342 | |
| 343 | /* FIXME: We're limited to 16-20K (depending on alignment) for payload for now. |
| 344 | * Figure out, how toggle can be set sensibly in this scenario */ |
| 345 | if (dalen > 0) { |
| 346 | toggle ^= 1; |
| 347 | cur = next; |
| 348 | memset(cur, 0, sizeof(qtd_t)); |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 349 | cur->token = QTD_ACTIVE | |
| 350 | (toggle?QTD_TOGGLE_DATA1:0) | |
| 351 | (((dir == OUT)?EHCI_OUT:EHCI_IN) << QTD_PID_SHIFT) | |
| 352 | (3 << QTD_CERR_SHIFT); |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 353 | if (fill_td(cur, data, dalen) != dalen) { |
| 354 | printf("ERROR: couldn't send the entire control payload\n"); |
| 355 | } |
| 356 | next = memalign(32, sizeof(qtd_t)); |
| 357 | cur->next_qtd = virt_to_phys(next); |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 358 | cur->alt_next_qtd = QTD_TERMINATE; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 359 | } |
| 360 | |
| 361 | toggle = 1; |
| 362 | cur = next; |
| 363 | memset(cur, 0, sizeof(qtd_t)); |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 364 | cur->token = QTD_ACTIVE | |
| 365 | (toggle?QTD_TOGGLE_DATA1:QTD_TOGGLE_DATA0) | |
| 366 | ((dir == OUT)?EHCI_IN:EHCI_OUT) << QTD_PID_SHIFT | |
| 367 | (0 << QTD_CERR_SHIFT); |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 368 | fill_td(cur, NULL, 0); |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 369 | cur->next_qtd = virt_to_phys(0) | QTD_TERMINATE; |
| 370 | cur->alt_next_qtd = QTD_TERMINATE; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 371 | |
| 372 | /* create QH */ |
| 373 | ehci_qh_t *qh = memalign(32, sizeof(ehci_qh_t)); |
| 374 | memset(qh, 0, sizeof(ehci_qh_t)); |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 375 | qh->horiz_link_ptr = virt_to_phys(qh) | QH_QH; |
| 376 | qh->epchar = dev->address | |
| 377 | (endp << QH_EP_SHIFT) | |
| 378 | (dev->speed << QH_EPS_SHIFT) | |
| 379 | (1 << QH_DTC_SHIFT) | /* ctrl transfers are special: take toggle bit from TD */ |
| 380 | (1 << QH_RECLAIM_HEAD_SHIFT) | |
| 381 | (mlen << QH_MPS_SHIFT) | |
Nico Huber | 1ab6075 | 2012-05-23 09:21:54 +0200 | [diff] [blame] | 382 | (non_hs_ctrl_ep << QH_NON_HS_CTRL_EP_SHIFT) | |
Patrick Georgi | 8fa2787 | 2011-11-24 13:19:57 +0100 | [diff] [blame] | 383 | (0 << QH_NAK_CNT_SHIFT); |
Nico Huber | 1ab6075 | 2012-05-23 09:21:54 +0200 | [diff] [blame] | 384 | qh->epcaps = (3 << QH_PIPE_MULTIPLIER_SHIFT) | |
| 385 | (hubport << QH_PORT_NUMBER_SHIFT) | |
| 386 | (hubaddr << QH_HUB_ADDRESS_SHIFT); |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 387 | qh->td.next_qtd = virt_to_phys(head); |
| 388 | |
Nico Huber | 0421dc8 | 2012-05-21 14:53:43 +0200 | [diff] [blame^] | 389 | result = ehci_process_async_schedule( |
| 390 | EHCI_INST(dev->controller), qh, head); |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 391 | |
| 392 | free_qh_and_tds(qh, head); |
| 393 | return result; |
| 394 | } |
| 395 | |
Nico Huber | 62eb5b3 | 2012-05-25 10:09:13 +0200 | [diff] [blame] | 396 | |
| 397 | typedef struct _intr_qtd_t intr_qtd_t; |
| 398 | |
| 399 | struct _intr_qtd_t { |
| 400 | volatile qtd_t td; |
| 401 | u8 *data; |
| 402 | intr_qtd_t *next; |
| 403 | }; |
| 404 | |
| 405 | typedef struct { |
| 406 | volatile ehci_qh_t qh; |
| 407 | intr_qtd_t *head; |
| 408 | intr_qtd_t *tail; |
| 409 | u8 *data; |
| 410 | endpoint_t *endp; |
| 411 | int reqsize; |
| 412 | } intr_queue_t; |
| 413 | |
| 414 | static void fill_intr_queue_td( |
| 415 | intr_queue_t *const intrq, |
| 416 | intr_qtd_t *const intr_qtd, |
| 417 | u8 *const data) |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 418 | { |
Nico Huber | 62eb5b3 | 2012-05-25 10:09:13 +0200 | [diff] [blame] | 419 | const int pid = (intrq->endp->direction == IN) ? EHCI_IN |
| 420 | : (intrq->endp->direction == OUT) ? EHCI_OUT |
| 421 | : EHCI_SETUP; |
| 422 | const int cerr = (intrq->endp->dev->speed < 2) ? 1 : 0; |
| 423 | |
| 424 | memset(intr_qtd, 0, sizeof(*intr_qtd)); |
| 425 | intr_qtd->td.next_qtd = QTD_TERMINATE; |
| 426 | intr_qtd->td.alt_next_qtd = QTD_TERMINATE; |
| 427 | intr_qtd->td.token = QTD_ACTIVE | |
| 428 | (pid << QTD_PID_SHIFT) | |
| 429 | (cerr << QTD_CERR_SHIFT) | |
| 430 | ((intrq->endp->toggle & 1) << QTD_TOGGLE_SHIFT); |
| 431 | fill_td(&intr_qtd->td, data, intrq->reqsize); |
| 432 | intr_qtd->data = data; |
| 433 | intr_qtd->next = NULL; |
| 434 | |
| 435 | intrq->endp->toggle ^= 1; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 436 | } |
| 437 | |
Nico Huber | 62eb5b3 | 2012-05-25 10:09:13 +0200 | [diff] [blame] | 438 | static void ehci_destroy_intr_queue(endpoint_t *const, void *const); |
| 439 | |
| 440 | static void *ehci_create_intr_queue( |
| 441 | endpoint_t *const ep, |
| 442 | const int reqsize, |
| 443 | int reqcount, |
| 444 | const int reqtiming) |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 445 | { |
Nico Huber | 62eb5b3 | 2012-05-25 10:09:13 +0200 | [diff] [blame] | 446 | int i; |
| 447 | |
| 448 | if ((reqsize > (4 * 4096 + 1)) || /* the maximum for arbitrary aligned |
| 449 | data in five 4096 byte pages */ |
| 450 | (reqtiming > 1024)) |
| 451 | return NULL; |
| 452 | if (reqcount < 2) /* we need at least 2: |
| 453 | one for processing, one for the hc to advance to */ |
| 454 | reqcount = 2; |
| 455 | |
| 456 | int hubaddr = 0, hubport = 0; |
| 457 | if (ep->dev->speed < 2) { |
| 458 | /* we need a split transaction */ |
| 459 | if (closest_usb2_hub(ep->dev, &hubaddr, &hubport)) |
| 460 | return NULL; |
| 461 | } |
| 462 | |
| 463 | intr_queue_t *const intrq = |
| 464 | (intr_queue_t *)memalign(32, sizeof(intr_queue_t)); |
| 465 | u8 *data = (u8 *)malloc(reqsize * reqcount); |
| 466 | if (!intrq || !data) |
| 467 | fatal("Not enough memory to create USB interrupt queue.\n"); |
| 468 | intrq->data = data; |
| 469 | intrq->endp = ep; |
| 470 | intrq->reqsize = reqsize; |
| 471 | |
| 472 | /* create #reqcount transfer descriptors (qTDs) */ |
| 473 | intrq->head = (intr_qtd_t *)memalign(32, sizeof(intr_qtd_t)); |
| 474 | intr_qtd_t *cur_td = intrq->head; |
| 475 | for (i = 0; i < reqcount; ++i) { |
| 476 | fill_intr_queue_td(intrq, cur_td, data); |
| 477 | data += reqsize; |
| 478 | if (i < reqcount - 1) { |
| 479 | /* create one more qTD */ |
| 480 | intr_qtd_t *const next_td = |
| 481 | (intr_qtd_t *)memalign(32, sizeof(intr_qtd_t)); |
| 482 | cur_td->td.next_qtd = virt_to_phys(&next_td->td); |
| 483 | cur_td->next = next_td; |
| 484 | cur_td = next_td; |
| 485 | } |
| 486 | } |
| 487 | intrq->tail = cur_td; |
| 488 | |
| 489 | /* initialize QH */ |
| 490 | const int endp = ep->endpoint & 0xf; |
| 491 | memset(&intrq->qh, 0, sizeof(intrq->qh)); |
| 492 | intrq->qh.horiz_link_ptr = PS_TERMINATE; |
| 493 | intrq->qh.epchar = ep->dev->address | |
| 494 | (endp << QH_EP_SHIFT) | |
| 495 | (ep->dev->speed << QH_EPS_SHIFT) | |
| 496 | (1 << QH_DTC_SHIFT) | |
| 497 | (0 << QH_RECLAIM_HEAD_SHIFT) | |
| 498 | (ep->maxpacketsize << QH_MPS_SHIFT) | |
| 499 | (0 << QH_NAK_CNT_SHIFT); |
| 500 | intrq->qh.epcaps = (1 << QH_PIPE_MULTIPLIER_SHIFT) | |
| 501 | (hubport << QH_PORT_NUMBER_SHIFT) | |
| 502 | (hubaddr << QH_HUB_ADDRESS_SHIFT) | |
| 503 | (0xfe << QH_UFRAME_CMASK_SHIFT) | |
| 504 | 1 /* uFrame S-mask */; |
| 505 | intrq->qh.td.next_qtd = virt_to_phys(&intrq->head->td); |
| 506 | |
| 507 | /* insert QH into periodic schedule */ |
| 508 | int nothing_placed = 1; |
| 509 | u32 *const ps = (u32 *)phys_to_virt(EHCI_INST(ep->dev->controller) |
| 510 | ->operation->periodiclistbase); |
| 511 | for (i = 0; i < 1024; i += reqtiming) { |
| 512 | /* advance to the next free position */ |
| 513 | while ((i < 1024) && !(ps[i] & PS_TERMINATE)) ++i; |
| 514 | if (i < 1024) { |
| 515 | ps[i] = virt_to_phys(&intrq->qh) | PS_TYPE_QH; |
| 516 | nothing_placed = 0; |
| 517 | } |
| 518 | } |
| 519 | if (nothing_placed) { |
| 520 | printf("Error: Failed to place ehci interrupt queue head " |
| 521 | "into periodic schedule: no space left\n"); |
| 522 | ehci_destroy_intr_queue(ep, intrq); |
| 523 | return NULL; |
| 524 | } |
| 525 | |
| 526 | return intrq; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 527 | } |
| 528 | |
Nico Huber | 62eb5b3 | 2012-05-25 10:09:13 +0200 | [diff] [blame] | 529 | static void ehci_destroy_intr_queue(endpoint_t *const ep, void *const queue) |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 530 | { |
Nico Huber | 62eb5b3 | 2012-05-25 10:09:13 +0200 | [diff] [blame] | 531 | intr_queue_t *const intrq = (intr_queue_t *)queue; |
| 532 | |
| 533 | /* remove QH from periodic schedule */ |
| 534 | int i; |
| 535 | u32 *const ps = (u32 *)phys_to_virt(EHCI_INST( |
| 536 | ep->dev->controller)->operation->periodiclistbase); |
| 537 | for (i = 0; i < 1024; ++i) { |
| 538 | if ((ps[i] & PS_PTR_MASK) == virt_to_phys(&intrq->qh)) |
| 539 | ps[i] = PS_TERMINATE; |
| 540 | } |
| 541 | |
| 542 | /* wait 1ms for frame to end */ |
| 543 | mdelay(1); |
| 544 | |
| 545 | while (intrq->head) { |
| 546 | /* disable qTD and destroy list */ |
| 547 | intrq->head->td.next_qtd = QTD_TERMINATE; |
| 548 | intrq->head->td.token &= ~QTD_ACTIVE; |
| 549 | |
| 550 | /* save and advance head ptr */ |
| 551 | intr_qtd_t *const to_free = intrq->head; |
| 552 | intrq->head = intrq->head->next; |
| 553 | |
| 554 | /* free current interrupt qTD */ |
| 555 | free(to_free); |
| 556 | } |
| 557 | free(intrq->data); |
| 558 | free(intrq); |
| 559 | } |
| 560 | |
| 561 | static u8 *ehci_poll_intr_queue(void *const queue) |
| 562 | { |
| 563 | intr_queue_t *const intrq = (intr_queue_t *)queue; |
| 564 | |
| 565 | u8 *ret = NULL; |
| 566 | |
| 567 | /* process if head qTD is inactive AND QH has been moved forward */ |
| 568 | if (!(intrq->head->td.token & QTD_ACTIVE) && |
| 569 | (intrq->qh.current_td_ptr != |
| 570 | virt_to_phys(&intrq->head->td))) { |
| 571 | if (!(intrq->head->td.token & QTD_STATUS_MASK)) |
| 572 | ret = intrq->head->data; |
| 573 | else |
| 574 | debug("ehci_poll_intr_queue: transfer failed, " |
| 575 | "status == 0x%02x\n", |
| 576 | intrq->head->td.token & QTD_STATUS_MASK); |
| 577 | |
| 578 | /* save and advance our head ptr */ |
| 579 | intr_qtd_t *const new_td = intrq->head; |
| 580 | intrq->head = intrq->head->next; |
| 581 | |
| 582 | /* reuse executed qTD */ |
| 583 | fill_intr_queue_td(intrq, new_td, new_td->data); |
| 584 | |
| 585 | /* at last insert reused qTD at the |
| 586 | * end and advance our tail ptr */ |
| 587 | intrq->tail->td.next_qtd = virt_to_phys(&new_td->td); |
| 588 | intrq->tail->next = new_td; |
| 589 | intrq->tail = intrq->tail->next; |
| 590 | } |
| 591 | return ret; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 592 | } |
| 593 | |
| 594 | hci_t * |
| 595 | ehci_init (pcidev_t addr) |
| 596 | { |
| 597 | int i; |
| 598 | hci_t *controller = new_controller (); |
| 599 | |
| 600 | if (!controller) |
Patrick Georgi | 2e768e7 | 2011-11-04 11:50:03 +0100 | [diff] [blame] | 601 | fatal("Could not create USB controller instance.\n"); |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 602 | |
| 603 | controller->instance = malloc (sizeof (ehci_t)); |
| 604 | if(!controller->instance) |
Patrick Georgi | 2e768e7 | 2011-11-04 11:50:03 +0100 | [diff] [blame] | 605 | fatal("Not enough memory creating USB controller instance.\n"); |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 606 | |
| 607 | #define PCI_COMMAND 4 |
| 608 | #define PCI_COMMAND_IO 1 |
| 609 | #define PCI_COMMAND_MEMORY 2 |
| 610 | #define PCI_COMMAND_MASTER 4 |
| 611 | |
| 612 | u32 pci_command = pci_read_config32(addr, PCI_COMMAND); |
| 613 | pci_command = (pci_command | PCI_COMMAND_MEMORY) & ~PCI_COMMAND_IO ; |
| 614 | pci_write_config32(addr, PCI_COMMAND, pci_command); |
| 615 | |
| 616 | controller->start = ehci_start; |
| 617 | controller->stop = ehci_stop; |
| 618 | controller->reset = ehci_reset; |
| 619 | controller->shutdown = ehci_shutdown; |
| 620 | controller->bulk = ehci_bulk; |
| 621 | controller->control = ehci_control; |
| 622 | controller->create_intr_queue = ehci_create_intr_queue; |
| 623 | controller->destroy_intr_queue = ehci_destroy_intr_queue; |
| 624 | controller->poll_intr_queue = ehci_poll_intr_queue; |
Steven A. Falco | 9229af9 | 2011-07-13 21:01:26 -0400 | [diff] [blame] | 625 | controller->bus_address = addr; |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 626 | for (i = 0; i < 128; i++) { |
| 627 | controller->devices[i] = 0; |
| 628 | } |
| 629 | init_device_entry (controller, 0); |
| 630 | |
| 631 | EHCI_INST(controller)->capabilities = phys_to_virt(pci_read_config32(addr, USBBASE)); |
| 632 | EHCI_INST(controller)->operation = (hc_op_t *)(phys_to_virt(pci_read_config32(addr, USBBASE)) + EHCI_INST(controller)->capabilities->caplength); |
| 633 | |
| 634 | /* default value for frame length adjust */ |
| 635 | pci_write_config8(addr, FLADJ, FLADJ_framelength(60000)); |
| 636 | |
| 637 | /* Enable operation of controller */ |
| 638 | controller->start(controller); |
| 639 | |
| 640 | /* take over all ports. USB1 should be blind now */ |
| 641 | EHCI_INST(controller)->operation->configflag = 1; |
| 642 | |
Nico Huber | 62eb5b3 | 2012-05-25 10:09:13 +0200 | [diff] [blame] | 643 | /* Initialize periodic frame list */ |
| 644 | /* 1024 32-bit pointers, 4kb aligned */ |
| 645 | u32 *const periodic_list = (u32 *)memalign(4096, 1024 * sizeof(u32)); |
| 646 | if (!periodic_list) |
| 647 | fatal("Not enough memory creating EHCI periodic frame list.\n"); |
| 648 | for (i = 0; i < 1024; ++i) |
| 649 | periodic_list[i] = PS_TERMINATE; |
| 650 | |
| 651 | /* Make sure periodic schedule is disabled */ |
| 652 | ehci_set_periodic_schedule(EHCI_INST(controller), 0); |
| 653 | /* Set periodic frame list pointer */ |
| 654 | EHCI_INST(controller)->operation->periodiclistbase = |
| 655 | virt_to_phys(periodic_list); |
| 656 | /* Enable use of periodic schedule */ |
| 657 | ehci_set_periodic_schedule(EHCI_INST(controller), 1); |
| 658 | |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 659 | /* TODO lots of stuff missing */ |
| 660 | |
| 661 | controller->devices[0]->controller = controller; |
| 662 | controller->devices[0]->init = ehci_rh_init; |
| 663 | controller->devices[0]->init (controller->devices[0]); |
| 664 | |
| 665 | return controller; |
| 666 | } |