Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * SL811HS HCD (Host Controller Driver) for USB. |
| 3 | * |
| 4 | * Copyright (C) 2004 Psion Teklogix (for NetBook PRO) |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 5 | * Copyright (C) 2004-2005 David Brownell |
| 6 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * Periodic scheduling is based on Roman's OHCI code |
| 8 | * Copyright (C) 1999 Roman Weissgaerber |
| 9 | * |
| 10 | * The SL811HS controller handles host side USB (like the SL11H, but with |
| 11 | * another register set and SOF generation) as well as peripheral side USB |
| 12 | * (like the SL811S). This driver version doesn't implement the Gadget API |
| 13 | * for the peripheral role; or OTG (that'd need much external circuitry). |
| 14 | * |
| 15 | * For documentation, see the SL811HS spec and the "SL811HS Embedded Host" |
| 16 | * document (providing significant pieces missing from that spec); plus |
| 17 | * the SL811S spec if you want peripheral side info. |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 18 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | |
| 20 | /* |
| 21 | * Status: Passed basic stress testing, works with hubs, mice, keyboards, |
| 22 | * and usb-storage. |
| 23 | * |
| 24 | * TODO: |
| 25 | * - usb suspend/resume triggered by sl811 (with USB_SUSPEND) |
| 26 | * - various issues noted in the code |
| 27 | * - performance work; use both register banks; ... |
| 28 | * - use urb->iso_frame_desc[] with ISO transfers |
| 29 | */ |
| 30 | |
| 31 | #undef VERBOSE |
| 32 | #undef PACKET_TRACE |
| 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <linux/module.h> |
| 35 | #include <linux/moduleparam.h> |
| 36 | #include <linux/kernel.h> |
| 37 | #include <linux/delay.h> |
| 38 | #include <linux/ioport.h> |
| 39 | #include <linux/sched.h> |
| 40 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <linux/errno.h> |
| 42 | #include <linux/init.h> |
| 43 | #include <linux/timer.h> |
| 44 | #include <linux/list.h> |
| 45 | #include <linux/interrupt.h> |
| 46 | #include <linux/usb.h> |
David Brownell | 325a4af | 2006-06-13 09:59:32 -0700 | [diff] [blame] | 47 | #include <linux/usb/sl811.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 48 | #include <linux/platform_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
| 50 | #include <asm/io.h> |
| 51 | #include <asm/irq.h> |
| 52 | #include <asm/system.h> |
| 53 | #include <asm/byteorder.h> |
| 54 | |
| 55 | #include "../core/hcd.h" |
| 56 | #include "sl811.h" |
| 57 | |
| 58 | |
| 59 | MODULE_DESCRIPTION("SL811HS USB Host Controller Driver"); |
| 60 | MODULE_LICENSE("GPL"); |
Kay Sievers | f4fce61 | 2008-04-10 21:29:22 -0700 | [diff] [blame] | 61 | MODULE_ALIAS("platform:sl811-hcd"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 63 | #define DRIVER_VERSION "19 May 2005" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
| 65 | |
| 66 | #ifndef DEBUG |
| 67 | # define STUB_DEBUG_FILE |
| 68 | #endif |
| 69 | |
| 70 | /* for now, use only one transfer register bank */ |
| 71 | #undef USE_B |
| 72 | |
| 73 | /* this doesn't understand urb->iso_frame_desc[], but if you had a driver |
| 74 | * that just queued one ISO frame per URB then iso transfers "should" work |
| 75 | * using the normal urb status fields. |
| 76 | */ |
| 77 | #define DISABLE_ISO |
| 78 | |
| 79 | // #define QUIRK2 |
| 80 | #define QUIRK3 |
| 81 | |
| 82 | static const char hcd_name[] = "sl811-hcd"; |
| 83 | |
| 84 | /*-------------------------------------------------------------------------*/ |
| 85 | |
| 86 | static void port_power(struct sl811 *sl811, int is_on) |
| 87 | { |
| 88 | struct usb_hcd *hcd = sl811_to_hcd(sl811); |
| 89 | |
| 90 | /* hub is inactive unless the port is powered */ |
| 91 | if (is_on) { |
| 92 | if (sl811->port1 & (1 << USB_PORT_FEAT_POWER)) |
| 93 | return; |
| 94 | |
| 95 | sl811->port1 = (1 << USB_PORT_FEAT_POWER); |
| 96 | sl811->irq_enable = SL11H_INTMASK_INSRMV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | } else { |
| 98 | sl811->port1 = 0; |
| 99 | sl811->irq_enable = 0; |
| 100 | hcd->state = HC_STATE_HALT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | } |
| 102 | sl811->ctrl1 = 0; |
| 103 | sl811_write(sl811, SL11H_IRQ_ENABLE, 0); |
| 104 | sl811_write(sl811, SL11H_IRQ_STATUS, ~0); |
| 105 | |
| 106 | if (sl811->board && sl811->board->port_power) { |
| 107 | /* switch VBUS, at 500mA unless hub power budget gets set */ |
| 108 | DBG("power %s\n", is_on ? "on" : "off"); |
| 109 | sl811->board->port_power(hcd->self.controller, is_on); |
| 110 | } |
| 111 | |
| 112 | /* reset as thoroughly as we can */ |
| 113 | if (sl811->board && sl811->board->reset) |
| 114 | sl811->board->reset(hcd->self.controller); |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 115 | else { |
| 116 | sl811_write(sl811, SL11H_CTLREG1, SL11H_CTL1MASK_SE0); |
| 117 | mdelay(20); |
| 118 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
| 120 | sl811_write(sl811, SL11H_IRQ_ENABLE, 0); |
| 121 | sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1); |
| 122 | sl811_write(sl811, SL811HS_CTLREG2, SL811HS_CTL2_INIT); |
| 123 | sl811_write(sl811, SL11H_IRQ_ENABLE, sl811->irq_enable); |
| 124 | |
| 125 | // if !is_on, put into lowpower mode now |
| 126 | } |
| 127 | |
| 128 | /*-------------------------------------------------------------------------*/ |
| 129 | |
| 130 | /* This is a PIO-only HCD. Queueing appends URBs to the endpoint's queue, |
| 131 | * and may start I/O. Endpoint queues are scanned during completion irq |
Steven Cole | 093cf72 | 2005-05-03 19:07:24 -0600 | [diff] [blame] | 132 | * handlers (one per packet: ACK, NAK, faults, etc) and urb cancellation. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | * |
| 134 | * Using an external DMA engine to copy a packet at a time could work, |
| 135 | * though setup/teardown costs may be too big to make it worthwhile. |
| 136 | */ |
| 137 | |
| 138 | /* SETUP starts a new control request. Devices are not allowed to |
| 139 | * STALL or NAK these; they must cancel any pending control requests. |
| 140 | */ |
| 141 | static void setup_packet( |
| 142 | struct sl811 *sl811, |
| 143 | struct sl811h_ep *ep, |
| 144 | struct urb *urb, |
| 145 | u8 bank, |
| 146 | u8 control |
| 147 | ) |
| 148 | { |
| 149 | u8 addr; |
| 150 | u8 len; |
| 151 | void __iomem *data_reg; |
| 152 | |
| 153 | addr = SL811HS_PACKET_BUF(bank == 0); |
| 154 | len = sizeof(struct usb_ctrlrequest); |
| 155 | data_reg = sl811->data_reg; |
| 156 | sl811_write_buf(sl811, addr, urb->setup_packet, len); |
| 157 | |
| 158 | /* autoincrementing */ |
| 159 | sl811_write(sl811, bank + SL11H_BUFADDRREG, addr); |
| 160 | writeb(len, data_reg); |
| 161 | writeb(SL_SETUP /* | ep->epnum */, data_reg); |
| 162 | writeb(usb_pipedevice(urb->pipe), data_reg); |
| 163 | |
| 164 | /* always OUT/data0 */ ; |
| 165 | sl811_write(sl811, bank + SL11H_HOSTCTLREG, |
| 166 | control | SL11H_HCTLMASK_OUT); |
| 167 | ep->length = 0; |
| 168 | PACKET("SETUP qh%p\n", ep); |
| 169 | } |
| 170 | |
| 171 | /* STATUS finishes control requests, often after IN or OUT data packets */ |
| 172 | static void status_packet( |
| 173 | struct sl811 *sl811, |
| 174 | struct sl811h_ep *ep, |
| 175 | struct urb *urb, |
| 176 | u8 bank, |
| 177 | u8 control |
| 178 | ) |
| 179 | { |
| 180 | int do_out; |
| 181 | void __iomem *data_reg; |
| 182 | |
| 183 | do_out = urb->transfer_buffer_length && usb_pipein(urb->pipe); |
| 184 | data_reg = sl811->data_reg; |
| 185 | |
| 186 | /* autoincrementing */ |
| 187 | sl811_write(sl811, bank + SL11H_BUFADDRREG, 0); |
| 188 | writeb(0, data_reg); |
| 189 | writeb((do_out ? SL_OUT : SL_IN) /* | ep->epnum */, data_reg); |
| 190 | writeb(usb_pipedevice(urb->pipe), data_reg); |
| 191 | |
| 192 | /* always data1; sometimes IN */ |
| 193 | control |= SL11H_HCTLMASK_TOGGLE; |
| 194 | if (do_out) |
| 195 | control |= SL11H_HCTLMASK_OUT; |
| 196 | sl811_write(sl811, bank + SL11H_HOSTCTLREG, control); |
| 197 | ep->length = 0; |
| 198 | PACKET("STATUS%s/%s qh%p\n", ep->nak_count ? "/retry" : "", |
| 199 | do_out ? "out" : "in", ep); |
| 200 | } |
| 201 | |
| 202 | /* IN packets can be used with any type of endpoint. here we just |
| 203 | * start the transfer, data from the peripheral may arrive later. |
| 204 | * urb->iso_frame_desc is currently ignored here... |
| 205 | */ |
| 206 | static void in_packet( |
| 207 | struct sl811 *sl811, |
| 208 | struct sl811h_ep *ep, |
| 209 | struct urb *urb, |
| 210 | u8 bank, |
| 211 | u8 control |
| 212 | ) |
| 213 | { |
| 214 | u8 addr; |
| 215 | u8 len; |
| 216 | void __iomem *data_reg; |
| 217 | |
| 218 | /* avoid losing data on overflow */ |
| 219 | len = ep->maxpacket; |
| 220 | addr = SL811HS_PACKET_BUF(bank == 0); |
| 221 | if (!(control & SL11H_HCTLMASK_ISOCH) |
| 222 | && usb_gettoggle(urb->dev, ep->epnum, 0)) |
| 223 | control |= SL11H_HCTLMASK_TOGGLE; |
| 224 | data_reg = sl811->data_reg; |
| 225 | |
| 226 | /* autoincrementing */ |
| 227 | sl811_write(sl811, bank + SL11H_BUFADDRREG, addr); |
| 228 | writeb(len, data_reg); |
| 229 | writeb(SL_IN | ep->epnum, data_reg); |
| 230 | writeb(usb_pipedevice(urb->pipe), data_reg); |
| 231 | |
| 232 | sl811_write(sl811, bank + SL11H_HOSTCTLREG, control); |
| 233 | ep->length = min((int)len, |
| 234 | urb->transfer_buffer_length - urb->actual_length); |
| 235 | PACKET("IN%s/%d qh%p len%d\n", ep->nak_count ? "/retry" : "", |
| 236 | !!usb_gettoggle(urb->dev, ep->epnum, 0), ep, len); |
| 237 | } |
| 238 | |
| 239 | /* OUT packets can be used with any type of endpoint. |
| 240 | * urb->iso_frame_desc is currently ignored here... |
| 241 | */ |
| 242 | static void out_packet( |
| 243 | struct sl811 *sl811, |
| 244 | struct sl811h_ep *ep, |
| 245 | struct urb *urb, |
| 246 | u8 bank, |
| 247 | u8 control |
| 248 | ) |
| 249 | { |
| 250 | void *buf; |
| 251 | u8 addr; |
| 252 | u8 len; |
| 253 | void __iomem *data_reg; |
| 254 | |
| 255 | buf = urb->transfer_buffer + urb->actual_length; |
| 256 | prefetch(buf); |
| 257 | |
| 258 | len = min((int)ep->maxpacket, |
| 259 | urb->transfer_buffer_length - urb->actual_length); |
| 260 | |
| 261 | if (!(control & SL11H_HCTLMASK_ISOCH) |
| 262 | && usb_gettoggle(urb->dev, ep->epnum, 1)) |
| 263 | control |= SL11H_HCTLMASK_TOGGLE; |
| 264 | addr = SL811HS_PACKET_BUF(bank == 0); |
| 265 | data_reg = sl811->data_reg; |
| 266 | |
| 267 | sl811_write_buf(sl811, addr, buf, len); |
| 268 | |
| 269 | /* autoincrementing */ |
| 270 | sl811_write(sl811, bank + SL11H_BUFADDRREG, addr); |
| 271 | writeb(len, data_reg); |
| 272 | writeb(SL_OUT | ep->epnum, data_reg); |
| 273 | writeb(usb_pipedevice(urb->pipe), data_reg); |
| 274 | |
| 275 | sl811_write(sl811, bank + SL11H_HOSTCTLREG, |
| 276 | control | SL11H_HCTLMASK_OUT); |
| 277 | ep->length = len; |
| 278 | PACKET("OUT%s/%d qh%p len%d\n", ep->nak_count ? "/retry" : "", |
| 279 | !!usb_gettoggle(urb->dev, ep->epnum, 1), ep, len); |
| 280 | } |
| 281 | |
| 282 | /*-------------------------------------------------------------------------*/ |
| 283 | |
| 284 | /* caller updates on-chip enables later */ |
| 285 | |
| 286 | static inline void sofirq_on(struct sl811 *sl811) |
| 287 | { |
| 288 | if (sl811->irq_enable & SL11H_INTMASK_SOFINTR) |
| 289 | return; |
| 290 | VDBG("sof irq on\n"); |
| 291 | sl811->irq_enable |= SL11H_INTMASK_SOFINTR; |
| 292 | } |
| 293 | |
| 294 | static inline void sofirq_off(struct sl811 *sl811) |
| 295 | { |
| 296 | if (!(sl811->irq_enable & SL11H_INTMASK_SOFINTR)) |
| 297 | return; |
| 298 | VDBG("sof irq off\n"); |
| 299 | sl811->irq_enable &= ~SL11H_INTMASK_SOFINTR; |
| 300 | } |
| 301 | |
| 302 | /*-------------------------------------------------------------------------*/ |
| 303 | |
| 304 | /* pick the next endpoint for a transaction, and issue it. |
| 305 | * frames start with periodic transfers (after whatever is pending |
| 306 | * from the previous frame), and the rest of the time is async |
| 307 | * transfers, scheduled round-robin. |
| 308 | */ |
| 309 | static struct sl811h_ep *start(struct sl811 *sl811, u8 bank) |
| 310 | { |
| 311 | struct sl811h_ep *ep; |
| 312 | struct urb *urb; |
| 313 | int fclock; |
| 314 | u8 control; |
| 315 | |
| 316 | /* use endpoint at schedule head */ |
| 317 | if (sl811->next_periodic) { |
| 318 | ep = sl811->next_periodic; |
| 319 | sl811->next_periodic = ep->next; |
| 320 | } else { |
| 321 | if (sl811->next_async) |
| 322 | ep = sl811->next_async; |
| 323 | else if (!list_empty(&sl811->async)) |
| 324 | ep = container_of(sl811->async.next, |
| 325 | struct sl811h_ep, schedule); |
| 326 | else { |
| 327 | /* could set up the first fullspeed periodic |
| 328 | * transfer for the next frame ... |
| 329 | */ |
| 330 | return NULL; |
| 331 | } |
| 332 | |
| 333 | #ifdef USE_B |
| 334 | if ((bank && sl811->active_b == ep) || sl811->active_a == ep) |
| 335 | return NULL; |
| 336 | #endif |
| 337 | |
| 338 | if (ep->schedule.next == &sl811->async) |
| 339 | sl811->next_async = NULL; |
| 340 | else |
| 341 | sl811->next_async = container_of(ep->schedule.next, |
| 342 | struct sl811h_ep, schedule); |
| 343 | } |
| 344 | |
| 345 | if (unlikely(list_empty(&ep->hep->urb_list))) { |
| 346 | DBG("empty %p queue?\n", ep); |
| 347 | return NULL; |
| 348 | } |
| 349 | |
| 350 | urb = container_of(ep->hep->urb_list.next, struct urb, urb_list); |
| 351 | control = ep->defctrl; |
| 352 | |
| 353 | /* if this frame doesn't have enough time left to transfer this |
| 354 | * packet, wait till the next frame. too-simple algorithm... |
| 355 | */ |
| 356 | fclock = sl811_read(sl811, SL11H_SOFTMRREG) << 6; |
| 357 | fclock -= 100; /* setup takes not much time */ |
| 358 | if (urb->dev->speed == USB_SPEED_LOW) { |
| 359 | if (control & SL11H_HCTLMASK_PREAMBLE) { |
| 360 | /* also note erratum 1: some hubs won't work */ |
| 361 | fclock -= 800; |
| 362 | } |
| 363 | fclock -= ep->maxpacket << 8; |
| 364 | |
| 365 | /* erratum 2: AFTERSOF only works for fullspeed */ |
| 366 | if (fclock < 0) { |
| 367 | if (ep->period) |
| 368 | sl811->stat_overrun++; |
| 369 | sofirq_on(sl811); |
| 370 | return NULL; |
| 371 | } |
| 372 | } else { |
| 373 | fclock -= 12000 / 19; /* 19 64byte packets/msec */ |
| 374 | if (fclock < 0) { |
| 375 | if (ep->period) |
| 376 | sl811->stat_overrun++; |
| 377 | control |= SL11H_HCTLMASK_AFTERSOF; |
| 378 | |
| 379 | /* throttle bulk/control irq noise */ |
| 380 | } else if (ep->nak_count) |
| 381 | control |= SL11H_HCTLMASK_AFTERSOF; |
| 382 | } |
| 383 | |
| 384 | |
| 385 | switch (ep->nextpid) { |
| 386 | case USB_PID_IN: |
| 387 | in_packet(sl811, ep, urb, bank, control); |
| 388 | break; |
| 389 | case USB_PID_OUT: |
| 390 | out_packet(sl811, ep, urb, bank, control); |
| 391 | break; |
| 392 | case USB_PID_SETUP: |
| 393 | setup_packet(sl811, ep, urb, bank, control); |
| 394 | break; |
| 395 | case USB_PID_ACK: /* for control status */ |
| 396 | status_packet(sl811, ep, urb, bank, control); |
| 397 | break; |
| 398 | default: |
| 399 | DBG("bad ep%p pid %02x\n", ep, ep->nextpid); |
| 400 | ep = NULL; |
| 401 | } |
| 402 | return ep; |
| 403 | } |
| 404 | |
| 405 | #define MIN_JIFFIES ((msecs_to_jiffies(2) > 1) ? msecs_to_jiffies(2) : 2) |
| 406 | |
| 407 | static inline void start_transfer(struct sl811 *sl811) |
| 408 | { |
| 409 | if (sl811->port1 & (1 << USB_PORT_FEAT_SUSPEND)) |
| 410 | return; |
| 411 | if (sl811->active_a == NULL) { |
| 412 | sl811->active_a = start(sl811, SL811_EP_A(SL811_HOST_BUF)); |
| 413 | if (sl811->active_a != NULL) |
| 414 | sl811->jiffies_a = jiffies + MIN_JIFFIES; |
| 415 | } |
| 416 | #ifdef USE_B |
| 417 | if (sl811->active_b == NULL) { |
| 418 | sl811->active_b = start(sl811, SL811_EP_B(SL811_HOST_BUF)); |
| 419 | if (sl811->active_b != NULL) |
| 420 | sl811->jiffies_b = jiffies + MIN_JIFFIES; |
| 421 | } |
| 422 | #endif |
| 423 | } |
| 424 | |
| 425 | static void finish_request( |
| 426 | struct sl811 *sl811, |
| 427 | struct sl811h_ep *ep, |
| 428 | struct urb *urb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | int status |
| 430 | ) __releases(sl811->lock) __acquires(sl811->lock) |
| 431 | { |
| 432 | unsigned i; |
| 433 | |
| 434 | if (usb_pipecontrol(urb->pipe)) |
| 435 | ep->nextpid = USB_PID_SETUP; |
| 436 | |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 437 | usb_hcd_unlink_urb_from_ep(sl811_to_hcd(sl811), urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | spin_unlock(&sl811->lock); |
Alan Stern | 4a00027 | 2007-08-24 15:42:24 -0400 | [diff] [blame] | 439 | usb_hcd_giveback_urb(sl811_to_hcd(sl811), urb, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | spin_lock(&sl811->lock); |
| 441 | |
| 442 | /* leave active endpoints in the schedule */ |
| 443 | if (!list_empty(&ep->hep->urb_list)) |
| 444 | return; |
| 445 | |
| 446 | /* async deschedule? */ |
| 447 | if (!list_empty(&ep->schedule)) { |
| 448 | list_del_init(&ep->schedule); |
| 449 | if (ep == sl811->next_async) |
| 450 | sl811->next_async = NULL; |
| 451 | return; |
| 452 | } |
| 453 | |
| 454 | /* periodic deschedule */ |
| 455 | DBG("deschedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); |
| 456 | for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) { |
| 457 | struct sl811h_ep *temp; |
| 458 | struct sl811h_ep **prev = &sl811->periodic[i]; |
| 459 | |
| 460 | while (*prev && ((temp = *prev) != ep)) |
| 461 | prev = &temp->next; |
| 462 | if (*prev) |
| 463 | *prev = ep->next; |
| 464 | sl811->load[i] -= ep->load; |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 465 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | ep->branch = PERIODIC_SIZE; |
| 467 | sl811->periodic_count--; |
| 468 | sl811_to_hcd(sl811)->self.bandwidth_allocated |
| 469 | -= ep->load / ep->period; |
| 470 | if (ep == sl811->next_periodic) |
| 471 | sl811->next_periodic = ep->next; |
| 472 | |
| 473 | /* we might turn SOFs back on again for the async schedule */ |
| 474 | if (sl811->periodic_count == 0) |
| 475 | sofirq_off(sl811); |
| 476 | } |
| 477 | |
| 478 | static void |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 479 | done(struct sl811 *sl811, struct sl811h_ep *ep, u8 bank) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | { |
| 481 | u8 status; |
| 482 | struct urb *urb; |
| 483 | int urbstat = -EINPROGRESS; |
| 484 | |
| 485 | if (unlikely(!ep)) |
| 486 | return; |
| 487 | |
| 488 | status = sl811_read(sl811, bank + SL11H_PKTSTATREG); |
| 489 | |
| 490 | urb = container_of(ep->hep->urb_list.next, struct urb, urb_list); |
| 491 | |
| 492 | /* we can safely ignore NAKs */ |
| 493 | if (status & SL11H_STATMASK_NAK) { |
| 494 | // PACKET("...NAK_%02x qh%p\n", bank, ep); |
| 495 | if (!ep->period) |
| 496 | ep->nak_count++; |
| 497 | ep->error_count = 0; |
| 498 | |
| 499 | /* ACK advances transfer, toggle, and maybe queue */ |
| 500 | } else if (status & SL11H_STATMASK_ACK) { |
| 501 | struct usb_device *udev = urb->dev; |
| 502 | int len; |
| 503 | unsigned char *buf; |
| 504 | |
| 505 | /* urb->iso_frame_desc is currently ignored here... */ |
| 506 | |
| 507 | ep->nak_count = ep->error_count = 0; |
| 508 | switch (ep->nextpid) { |
| 509 | case USB_PID_OUT: |
| 510 | // PACKET("...ACK/out_%02x qh%p\n", bank, ep); |
| 511 | urb->actual_length += ep->length; |
| 512 | usb_dotoggle(udev, ep->epnum, 1); |
| 513 | if (urb->actual_length |
| 514 | == urb->transfer_buffer_length) { |
| 515 | if (usb_pipecontrol(urb->pipe)) |
| 516 | ep->nextpid = USB_PID_ACK; |
| 517 | |
| 518 | /* some bulk protocols terminate OUT transfers |
| 519 | * by a short packet, using ZLPs not padding. |
| 520 | */ |
| 521 | else if (ep->length < ep->maxpacket |
| 522 | || !(urb->transfer_flags |
| 523 | & URB_ZERO_PACKET)) |
| 524 | urbstat = 0; |
| 525 | } |
| 526 | break; |
| 527 | case USB_PID_IN: |
| 528 | // PACKET("...ACK/in_%02x qh%p\n", bank, ep); |
| 529 | buf = urb->transfer_buffer + urb->actual_length; |
| 530 | prefetchw(buf); |
| 531 | len = ep->maxpacket - sl811_read(sl811, |
| 532 | bank + SL11H_XFERCNTREG); |
| 533 | if (len > ep->length) { |
| 534 | len = ep->length; |
Alan Stern | 65e5109 | 2007-08-24 15:40:47 -0400 | [diff] [blame] | 535 | urbstat = -EOVERFLOW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | } |
| 537 | urb->actual_length += len; |
| 538 | sl811_read_buf(sl811, SL811HS_PACKET_BUF(bank == 0), |
| 539 | buf, len); |
| 540 | usb_dotoggle(udev, ep->epnum, 0); |
Alan Stern | 65e5109 | 2007-08-24 15:40:47 -0400 | [diff] [blame] | 541 | if (urbstat == -EINPROGRESS && |
| 542 | (len < ep->maxpacket || |
| 543 | urb->actual_length == |
| 544 | urb->transfer_buffer_length)) { |
| 545 | if (usb_pipecontrol(urb->pipe)) |
| 546 | ep->nextpid = USB_PID_ACK; |
| 547 | else |
| 548 | urbstat = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | } |
| 550 | break; |
| 551 | case USB_PID_SETUP: |
| 552 | // PACKET("...ACK/setup_%02x qh%p\n", bank, ep); |
| 553 | if (urb->transfer_buffer_length == urb->actual_length) |
| 554 | ep->nextpid = USB_PID_ACK; |
| 555 | else if (usb_pipeout(urb->pipe)) { |
| 556 | usb_settoggle(udev, 0, 1, 1); |
| 557 | ep->nextpid = USB_PID_OUT; |
| 558 | } else { |
| 559 | usb_settoggle(udev, 0, 0, 1); |
| 560 | ep->nextpid = USB_PID_IN; |
| 561 | } |
| 562 | break; |
| 563 | case USB_PID_ACK: |
| 564 | // PACKET("...ACK/status_%02x qh%p\n", bank, ep); |
| 565 | urbstat = 0; |
| 566 | break; |
| 567 | } |
| 568 | |
| 569 | /* STALL stops all transfers */ |
| 570 | } else if (status & SL11H_STATMASK_STALL) { |
| 571 | PACKET("...STALL_%02x qh%p\n", bank, ep); |
| 572 | ep->nak_count = ep->error_count = 0; |
| 573 | urbstat = -EPIPE; |
| 574 | |
| 575 | /* error? retry, until "3 strikes" */ |
| 576 | } else if (++ep->error_count >= 3) { |
| 577 | if (status & SL11H_STATMASK_TMOUT) |
Pete Zaitcev | 38e2bfc | 2006-09-18 22:49:02 -0700 | [diff] [blame] | 578 | urbstat = -ETIME; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | else if (status & SL11H_STATMASK_OVF) |
| 580 | urbstat = -EOVERFLOW; |
| 581 | else |
| 582 | urbstat = -EPROTO; |
| 583 | ep->error_count = 0; |
| 584 | PACKET("...3STRIKES_%02x %02x qh%p stat %d\n", |
| 585 | bank, status, ep, urbstat); |
| 586 | } |
| 587 | |
Alan Stern | 65e5109 | 2007-08-24 15:40:47 -0400 | [diff] [blame] | 588 | if (urbstat != -EINPROGRESS || urb->unlinked) |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 589 | finish_request(sl811, ep, urb, urbstat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | } |
| 591 | |
| 592 | static inline u8 checkdone(struct sl811 *sl811) |
| 593 | { |
| 594 | u8 ctl; |
| 595 | u8 irqstat = 0; |
| 596 | |
| 597 | if (sl811->active_a && time_before_eq(sl811->jiffies_a, jiffies)) { |
| 598 | ctl = sl811_read(sl811, SL811_EP_A(SL11H_HOSTCTLREG)); |
| 599 | if (ctl & SL11H_HCTLMASK_ARM) |
| 600 | sl811_write(sl811, SL811_EP_A(SL11H_HOSTCTLREG), 0); |
| 601 | DBG("%s DONE_A: ctrl %02x sts %02x\n", |
| 602 | (ctl & SL11H_HCTLMASK_ARM) ? "timeout" : "lost", |
| 603 | ctl, |
| 604 | sl811_read(sl811, SL811_EP_A(SL11H_PKTSTATREG))); |
| 605 | irqstat |= SL11H_INTMASK_DONE_A; |
| 606 | } |
| 607 | #ifdef USE_B |
| 608 | if (sl811->active_b && time_before_eq(sl811->jiffies_b, jiffies)) { |
| 609 | ctl = sl811_read(sl811, SL811_EP_B(SL11H_HOSTCTLREG)); |
| 610 | if (ctl & SL11H_HCTLMASK_ARM) |
| 611 | sl811_write(sl811, SL811_EP_B(SL11H_HOSTCTLREG), 0); |
| 612 | DBG("%s DONE_B: ctrl %02x sts %02x\n", |
| 613 | (ctl & SL11H_HCTLMASK_ARM) ? "timeout" : "lost", |
| 614 | ctl, |
| 615 | sl811_read(sl811, SL811_EP_B(SL11H_PKTSTATREG))); |
| 616 | irqstat |= SL11H_INTMASK_DONE_A; |
| 617 | } |
| 618 | #endif |
| 619 | return irqstat; |
| 620 | } |
| 621 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 622 | static irqreturn_t sl811h_irq(struct usb_hcd *hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | { |
| 624 | struct sl811 *sl811 = hcd_to_sl811(hcd); |
| 625 | u8 irqstat; |
| 626 | irqreturn_t ret = IRQ_NONE; |
| 627 | unsigned retries = 5; |
| 628 | |
| 629 | spin_lock(&sl811->lock); |
| 630 | |
| 631 | retry: |
| 632 | irqstat = sl811_read(sl811, SL11H_IRQ_STATUS) & ~SL11H_INTMASK_DP; |
| 633 | if (irqstat) { |
| 634 | sl811_write(sl811, SL11H_IRQ_STATUS, irqstat); |
| 635 | irqstat &= sl811->irq_enable; |
| 636 | } |
| 637 | |
| 638 | #ifdef QUIRK2 |
| 639 | /* this may no longer be necessary ... */ |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 640 | if (irqstat == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | irqstat = checkdone(sl811); |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 642 | if (irqstat) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | sl811->stat_lost++; |
| 644 | } |
| 645 | #endif |
| 646 | |
| 647 | /* USB packets, not necessarily handled in the order they're |
| 648 | * issued ... that's fine if they're different endpoints. |
| 649 | */ |
| 650 | if (irqstat & SL11H_INTMASK_DONE_A) { |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 651 | done(sl811, sl811->active_a, SL811_EP_A(SL811_HOST_BUF)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | sl811->active_a = NULL; |
| 653 | sl811->stat_a++; |
| 654 | } |
| 655 | #ifdef USE_B |
| 656 | if (irqstat & SL11H_INTMASK_DONE_B) { |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 657 | done(sl811, sl811->active_b, SL811_EP_B(SL811_HOST_BUF)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | sl811->active_b = NULL; |
| 659 | sl811->stat_b++; |
| 660 | } |
| 661 | #endif |
| 662 | if (irqstat & SL11H_INTMASK_SOFINTR) { |
| 663 | unsigned index; |
| 664 | |
| 665 | index = sl811->frame++ % (PERIODIC_SIZE - 1); |
| 666 | sl811->stat_sof++; |
| 667 | |
| 668 | /* be graceful about almost-inevitable periodic schedule |
| 669 | * overruns: continue the previous frame's transfers iff |
| 670 | * this one has nothing scheduled. |
| 671 | */ |
| 672 | if (sl811->next_periodic) { |
| 673 | // ERR("overrun to slot %d\n", index); |
| 674 | sl811->stat_overrun++; |
| 675 | } |
| 676 | if (sl811->periodic[index]) |
| 677 | sl811->next_periodic = sl811->periodic[index]; |
| 678 | } |
| 679 | |
| 680 | /* khubd manages debouncing and wakeup */ |
| 681 | if (irqstat & SL11H_INTMASK_INSRMV) { |
| 682 | sl811->stat_insrmv++; |
| 683 | |
| 684 | /* most stats are reset for each VBUS session */ |
| 685 | sl811->stat_wake = 0; |
| 686 | sl811->stat_sof = 0; |
| 687 | sl811->stat_a = 0; |
| 688 | sl811->stat_b = 0; |
| 689 | sl811->stat_lost = 0; |
| 690 | |
| 691 | sl811->ctrl1 = 0; |
| 692 | sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1); |
| 693 | |
| 694 | sl811->irq_enable = SL11H_INTMASK_INSRMV; |
| 695 | sl811_write(sl811, SL11H_IRQ_ENABLE, sl811->irq_enable); |
| 696 | |
| 697 | /* usbcore nukes other pending transactions on disconnect */ |
| 698 | if (sl811->active_a) { |
| 699 | sl811_write(sl811, SL811_EP_A(SL11H_HOSTCTLREG), 0); |
| 700 | finish_request(sl811, sl811->active_a, |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 701 | container_of(sl811->active_a |
| 702 | ->hep->urb_list.next, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | struct urb, urb_list), |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 704 | -ESHUTDOWN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | sl811->active_a = NULL; |
| 706 | } |
| 707 | #ifdef USE_B |
| 708 | if (sl811->active_b) { |
| 709 | sl811_write(sl811, SL811_EP_B(SL11H_HOSTCTLREG), 0); |
| 710 | finish_request(sl811, sl811->active_b, |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 711 | container_of(sl811->active_b |
| 712 | ->hep->urb_list.next, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | struct urb, urb_list), |
| 714 | NULL, -ESHUTDOWN); |
| 715 | sl811->active_b = NULL; |
| 716 | } |
| 717 | #endif |
| 718 | |
Steven Cole | 093cf72 | 2005-05-03 19:07:24 -0600 | [diff] [blame] | 719 | /* port status seems weird until after reset, so |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | * force the reset and make khubd clean up later. |
| 721 | */ |
| 722 | sl811->port1 |= (1 << USB_PORT_FEAT_C_CONNECTION) |
| 723 | | (1 << USB_PORT_FEAT_CONNECTION); |
| 724 | |
| 725 | } else if (irqstat & SL11H_INTMASK_RD) { |
| 726 | if (sl811->port1 & (1 << USB_PORT_FEAT_SUSPEND)) { |
| 727 | DBG("wakeup\n"); |
| 728 | sl811->port1 |= 1 << USB_PORT_FEAT_C_SUSPEND; |
| 729 | sl811->stat_wake++; |
| 730 | } else |
| 731 | irqstat &= ~SL11H_INTMASK_RD; |
| 732 | } |
| 733 | |
| 734 | if (irqstat) { |
| 735 | if (sl811->port1 & (1 << USB_PORT_FEAT_ENABLE)) |
| 736 | start_transfer(sl811); |
| 737 | ret = IRQ_HANDLED; |
| 738 | if (retries--) |
| 739 | goto retry; |
| 740 | } |
| 741 | |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 742 | if (sl811->periodic_count == 0 && list_empty(&sl811->async)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | sofirq_off(sl811); |
| 744 | sl811_write(sl811, SL11H_IRQ_ENABLE, sl811->irq_enable); |
| 745 | |
| 746 | spin_unlock(&sl811->lock); |
| 747 | |
| 748 | return ret; |
| 749 | } |
| 750 | |
| 751 | /*-------------------------------------------------------------------------*/ |
| 752 | |
| 753 | /* usb 1.1 says max 90% of a frame is available for periodic transfers. |
| 754 | * this driver doesn't promise that much since it's got to handle an |
| 755 | * IRQ per packet; irq handling latencies also use up that time. |
David Brownell | 4b2e790 | 2005-09-22 00:49:07 -0700 | [diff] [blame] | 756 | * |
| 757 | * NOTE: the periodic schedule is a sparse tree, with the load for |
| 758 | * each branch minimized. see fig 3.5 in the OHCI spec for example. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | */ |
| 760 | #define MAX_PERIODIC_LOAD 500 /* out of 1000 usec */ |
| 761 | |
| 762 | static int balance(struct sl811 *sl811, u16 period, u16 load) |
| 763 | { |
| 764 | int i, branch = -ENOSPC; |
| 765 | |
| 766 | /* search for the least loaded schedule branch of that period |
| 767 | * which has enough bandwidth left unreserved. |
| 768 | */ |
| 769 | for (i = 0; i < period ; i++) { |
| 770 | if (branch < 0 || sl811->load[branch] > sl811->load[i]) { |
| 771 | int j; |
| 772 | |
| 773 | for (j = i; j < PERIODIC_SIZE; j += period) { |
| 774 | if ((sl811->load[j] + load) |
| 775 | > MAX_PERIODIC_LOAD) |
| 776 | break; |
| 777 | } |
| 778 | if (j < PERIODIC_SIZE) |
| 779 | continue; |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 780 | branch = i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | } |
| 782 | } |
| 783 | return branch; |
| 784 | } |
| 785 | |
| 786 | /*-------------------------------------------------------------------------*/ |
| 787 | |
| 788 | static int sl811h_urb_enqueue( |
| 789 | struct usb_hcd *hcd, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | struct urb *urb, |
Al Viro | 55016f1 | 2005-10-21 03:21:58 -0400 | [diff] [blame] | 791 | gfp_t mem_flags |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | ) { |
| 793 | struct sl811 *sl811 = hcd_to_sl811(hcd); |
| 794 | struct usb_device *udev = urb->dev; |
| 795 | unsigned int pipe = urb->pipe; |
| 796 | int is_out = !usb_pipein(pipe); |
| 797 | int type = usb_pipetype(pipe); |
| 798 | int epnum = usb_pipeendpoint(pipe); |
| 799 | struct sl811h_ep *ep = NULL; |
| 800 | unsigned long flags; |
| 801 | int i; |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 802 | int retval; |
| 803 | struct usb_host_endpoint *hep = urb->ep; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | |
| 805 | #ifdef DISABLE_ISO |
| 806 | if (type == PIPE_ISOCHRONOUS) |
| 807 | return -ENOSPC; |
| 808 | #endif |
| 809 | |
| 810 | /* avoid all allocations within spinlocks */ |
| 811 | if (!hep->hcpriv) |
Pekka Enberg | 7b842b6 | 2005-09-06 15:18:34 -0700 | [diff] [blame] | 812 | ep = kzalloc(sizeof *ep, mem_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | |
| 814 | spin_lock_irqsave(&sl811->lock, flags); |
| 815 | |
| 816 | /* don't submit to a dead or disabled port */ |
| 817 | if (!(sl811->port1 & (1 << USB_PORT_FEAT_ENABLE)) |
| 818 | || !HC_IS_RUNNING(hcd->state)) { |
| 819 | retval = -ENODEV; |
David Brownell | 4b2e790 | 2005-09-22 00:49:07 -0700 | [diff] [blame] | 820 | kfree(ep); |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 821 | goto fail_not_linked; |
| 822 | } |
| 823 | retval = usb_hcd_link_urb_to_ep(hcd, urb); |
| 824 | if (retval) { |
| 825 | kfree(ep); |
| 826 | goto fail_not_linked; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | } |
| 828 | |
| 829 | if (hep->hcpriv) { |
| 830 | kfree(ep); |
| 831 | ep = hep->hcpriv; |
| 832 | } else if (!ep) { |
| 833 | retval = -ENOMEM; |
| 834 | goto fail; |
| 835 | |
| 836 | } else { |
| 837 | INIT_LIST_HEAD(&ep->schedule); |
Alan Stern | 6a8e87b | 2006-01-19 10:46:27 -0500 | [diff] [blame] | 838 | ep->udev = udev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | ep->epnum = epnum; |
| 840 | ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out); |
| 841 | ep->defctrl = SL11H_HCTLMASK_ARM | SL11H_HCTLMASK_ENABLE; |
| 842 | usb_settoggle(udev, epnum, is_out, 0); |
| 843 | |
| 844 | if (type == PIPE_CONTROL) |
| 845 | ep->nextpid = USB_PID_SETUP; |
| 846 | else if (is_out) |
| 847 | ep->nextpid = USB_PID_OUT; |
| 848 | else |
| 849 | ep->nextpid = USB_PID_IN; |
| 850 | |
| 851 | if (ep->maxpacket > H_MAXPACKET) { |
| 852 | /* iso packets up to 240 bytes could work... */ |
| 853 | DBG("dev %d ep%d maxpacket %d\n", |
| 854 | udev->devnum, epnum, ep->maxpacket); |
| 855 | retval = -EINVAL; |
| 856 | goto fail; |
| 857 | } |
| 858 | |
| 859 | if (udev->speed == USB_SPEED_LOW) { |
| 860 | /* send preamble for external hub? */ |
| 861 | if (!(sl811->ctrl1 & SL11H_CTL1MASK_LSPD)) |
| 862 | ep->defctrl |= SL11H_HCTLMASK_PREAMBLE; |
| 863 | } |
| 864 | switch (type) { |
| 865 | case PIPE_ISOCHRONOUS: |
| 866 | case PIPE_INTERRUPT: |
| 867 | if (urb->interval > PERIODIC_SIZE) |
| 868 | urb->interval = PERIODIC_SIZE; |
| 869 | ep->period = urb->interval; |
| 870 | ep->branch = PERIODIC_SIZE; |
| 871 | if (type == PIPE_ISOCHRONOUS) |
| 872 | ep->defctrl |= SL11H_HCTLMASK_ISOCH; |
| 873 | ep->load = usb_calc_bus_time(udev->speed, !is_out, |
| 874 | (type == PIPE_ISOCHRONOUS), |
| 875 | usb_maxpacket(udev, pipe, is_out)) |
| 876 | / 1000; |
| 877 | break; |
| 878 | } |
| 879 | |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 880 | ep->hep = hep; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | hep->hcpriv = ep; |
| 882 | } |
| 883 | |
| 884 | /* maybe put endpoint into schedule */ |
| 885 | switch (type) { |
| 886 | case PIPE_CONTROL: |
| 887 | case PIPE_BULK: |
| 888 | if (list_empty(&ep->schedule)) |
| 889 | list_add_tail(&ep->schedule, &sl811->async); |
| 890 | break; |
| 891 | case PIPE_ISOCHRONOUS: |
| 892 | case PIPE_INTERRUPT: |
| 893 | urb->interval = ep->period; |
David Brownell | 4b2e790 | 2005-09-22 00:49:07 -0700 | [diff] [blame] | 894 | if (ep->branch < PERIODIC_SIZE) { |
| 895 | /* NOTE: the phase is correct here, but the value |
| 896 | * needs offsetting by the transfer queue depth. |
| 897 | * All current drivers ignore start_frame, so this |
| 898 | * is unlikely to ever matter... |
| 899 | */ |
| 900 | urb->start_frame = (sl811->frame & (PERIODIC_SIZE - 1)) |
| 901 | + ep->branch; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | break; |
David Brownell | 4b2e790 | 2005-09-22 00:49:07 -0700 | [diff] [blame] | 903 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | |
| 905 | retval = balance(sl811, ep->period, ep->load); |
| 906 | if (retval < 0) |
| 907 | goto fail; |
| 908 | ep->branch = retval; |
| 909 | retval = 0; |
| 910 | urb->start_frame = (sl811->frame & (PERIODIC_SIZE - 1)) |
| 911 | + ep->branch; |
| 912 | |
| 913 | /* sort each schedule branch by period (slow before fast) |
| 914 | * to share the faster parts of the tree without needing |
| 915 | * dummy/placeholder nodes |
| 916 | */ |
| 917 | DBG("schedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); |
| 918 | for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) { |
| 919 | struct sl811h_ep **prev = &sl811->periodic[i]; |
| 920 | struct sl811h_ep *here = *prev; |
| 921 | |
| 922 | while (here && ep != here) { |
| 923 | if (ep->period > here->period) |
| 924 | break; |
| 925 | prev = &here->next; |
| 926 | here = *prev; |
| 927 | } |
| 928 | if (ep != here) { |
| 929 | ep->next = here; |
| 930 | *prev = ep; |
| 931 | } |
| 932 | sl811->load[i] += ep->load; |
| 933 | } |
| 934 | sl811->periodic_count++; |
| 935 | hcd->self.bandwidth_allocated += ep->load / ep->period; |
| 936 | sofirq_on(sl811); |
| 937 | } |
| 938 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | urb->hcpriv = hep; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | start_transfer(sl811); |
| 941 | sl811_write(sl811, SL11H_IRQ_ENABLE, sl811->irq_enable); |
| 942 | fail: |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 943 | if (retval) |
| 944 | usb_hcd_unlink_urb_from_ep(hcd, urb); |
| 945 | fail_not_linked: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | spin_unlock_irqrestore(&sl811->lock, flags); |
| 947 | return retval; |
| 948 | } |
| 949 | |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 950 | static int sl811h_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | { |
| 952 | struct sl811 *sl811 = hcd_to_sl811(hcd); |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 953 | struct usb_host_endpoint *hep; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | unsigned long flags; |
| 955 | struct sl811h_ep *ep; |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 956 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | spin_lock_irqsave(&sl811->lock, flags); |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 959 | retval = usb_hcd_check_unlink_urb(hcd, urb, status); |
| 960 | if (retval) |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 961 | goto fail; |
| 962 | |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 963 | hep = urb->hcpriv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | ep = hep->hcpriv; |
| 965 | if (ep) { |
| 966 | /* finish right away if this urb can't be active ... |
| 967 | * note that some drivers wrongly expect delays |
| 968 | */ |
| 969 | if (ep->hep->urb_list.next != &urb->urb_list) { |
| 970 | /* not front of queue? never active */ |
| 971 | |
| 972 | /* for active transfers, we expect an IRQ */ |
| 973 | } else if (sl811->active_a == ep) { |
| 974 | if (time_before_eq(sl811->jiffies_a, jiffies)) { |
| 975 | /* happens a lot with lowspeed?? */ |
| 976 | DBG("giveup on DONE_A: ctrl %02x sts %02x\n", |
| 977 | sl811_read(sl811, |
| 978 | SL811_EP_A(SL11H_HOSTCTLREG)), |
| 979 | sl811_read(sl811, |
| 980 | SL811_EP_A(SL11H_PKTSTATREG))); |
| 981 | sl811_write(sl811, SL811_EP_A(SL11H_HOSTCTLREG), |
| 982 | 0); |
| 983 | sl811->active_a = NULL; |
| 984 | } else |
| 985 | urb = NULL; |
| 986 | #ifdef USE_B |
| 987 | } else if (sl811->active_b == ep) { |
| 988 | if (time_before_eq(sl811->jiffies_a, jiffies)) { |
| 989 | /* happens a lot with lowspeed?? */ |
| 990 | DBG("giveup on DONE_B: ctrl %02x sts %02x\n", |
| 991 | sl811_read(sl811, |
| 992 | SL811_EP_B(SL11H_HOSTCTLREG)), |
| 993 | sl811_read(sl811, |
| 994 | SL811_EP_B(SL11H_PKTSTATREG))); |
| 995 | sl811_write(sl811, SL811_EP_B(SL11H_HOSTCTLREG), |
| 996 | 0); |
| 997 | sl811->active_b = NULL; |
| 998 | } else |
| 999 | urb = NULL; |
| 1000 | #endif |
| 1001 | } else { |
| 1002 | /* front of queue for inactive endpoint */ |
| 1003 | } |
| 1004 | |
| 1005 | if (urb) |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1006 | finish_request(sl811, ep, urb, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | else |
| 1008 | VDBG("dequeue, urb %p active %s; wait4irq\n", urb, |
| 1009 | (sl811->active_a == ep) ? "A" : "B"); |
| 1010 | } else |
| 1011 | retval = -EINVAL; |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1012 | fail: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | spin_unlock_irqrestore(&sl811->lock, flags); |
| 1014 | return retval; |
| 1015 | } |
| 1016 | |
| 1017 | static void |
| 1018 | sl811h_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep) |
| 1019 | { |
| 1020 | struct sl811h_ep *ep = hep->hcpriv; |
| 1021 | |
| 1022 | if (!ep) |
| 1023 | return; |
| 1024 | |
| 1025 | /* assume we'd just wait for the irq */ |
| 1026 | if (!list_empty(&hep->urb_list)) |
| 1027 | msleep(3); |
| 1028 | if (!list_empty(&hep->urb_list)) |
Arjan van de Ven | b6c6393 | 2008-07-25 01:45:52 -0700 | [diff] [blame] | 1029 | WARNING("ep %p not empty?\n", ep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | kfree(ep); |
| 1032 | hep->hcpriv = NULL; |
| 1033 | } |
| 1034 | |
| 1035 | static int |
| 1036 | sl811h_get_frame(struct usb_hcd *hcd) |
| 1037 | { |
| 1038 | struct sl811 *sl811 = hcd_to_sl811(hcd); |
| 1039 | |
| 1040 | /* wrong except while periodic transfers are scheduled; |
| 1041 | * never matches the on-the-wire frame; |
| 1042 | * subject to overruns. |
| 1043 | */ |
| 1044 | return sl811->frame; |
| 1045 | } |
| 1046 | |
| 1047 | |
| 1048 | /*-------------------------------------------------------------------------*/ |
| 1049 | |
| 1050 | /* the virtual root hub timer IRQ checks for hub status */ |
| 1051 | static int |
| 1052 | sl811h_hub_status_data(struct usb_hcd *hcd, char *buf) |
| 1053 | { |
| 1054 | struct sl811 *sl811 = hcd_to_sl811(hcd); |
| 1055 | #ifdef QUIRK3 |
| 1056 | unsigned long flags; |
| 1057 | |
| 1058 | /* non-SMP HACK: use root hub timer as i/o watchdog |
| 1059 | * this seems essential when SOF IRQs aren't in use... |
| 1060 | */ |
| 1061 | local_irq_save(flags); |
| 1062 | if (!timer_pending(&sl811->timer)) { |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1063 | if (sl811h_irq( /* ~0, */ hcd) != IRQ_NONE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | sl811->stat_lost++; |
| 1065 | } |
| 1066 | local_irq_restore(flags); |
| 1067 | #endif |
| 1068 | |
| 1069 | if (!(sl811->port1 & (0xffff << 16))) |
| 1070 | return 0; |
| 1071 | |
| 1072 | /* tell khubd port 1 changed */ |
| 1073 | *buf = (1 << 1); |
| 1074 | return 1; |
| 1075 | } |
| 1076 | |
| 1077 | static void |
| 1078 | sl811h_hub_descriptor ( |
| 1079 | struct sl811 *sl811, |
| 1080 | struct usb_hub_descriptor *desc |
| 1081 | ) { |
| 1082 | u16 temp = 0; |
| 1083 | |
| 1084 | desc->bDescriptorType = 0x29; |
| 1085 | desc->bHubContrCurrent = 0; |
| 1086 | |
| 1087 | desc->bNbrPorts = 1; |
| 1088 | desc->bDescLength = 9; |
| 1089 | |
| 1090 | /* per-port power switching (gang of one!), or none */ |
| 1091 | desc->bPwrOn2PwrGood = 0; |
| 1092 | if (sl811->board && sl811->board->port_power) { |
| 1093 | desc->bPwrOn2PwrGood = sl811->board->potpg; |
| 1094 | if (!desc->bPwrOn2PwrGood) |
| 1095 | desc->bPwrOn2PwrGood = 10; |
| 1096 | temp = 0x0001; |
| 1097 | } else |
| 1098 | temp = 0x0002; |
| 1099 | |
| 1100 | /* no overcurrent errors detection/handling */ |
| 1101 | temp |= 0x0010; |
| 1102 | |
Al Viro | fd05e72 | 2008-04-28 07:00:16 +0100 | [diff] [blame] | 1103 | desc->wHubCharacteristics = cpu_to_le16(temp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | |
| 1105 | /* two bitmaps: ports removable, and legacy PortPwrCtrlMask */ |
David Brownell | 4b2e790 | 2005-09-22 00:49:07 -0700 | [diff] [blame] | 1106 | desc->bitmap[0] = 0 << 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1107 | desc->bitmap[1] = ~0; |
| 1108 | } |
| 1109 | |
| 1110 | static void |
| 1111 | sl811h_timer(unsigned long _sl811) |
| 1112 | { |
| 1113 | struct sl811 *sl811 = (void *) _sl811; |
| 1114 | unsigned long flags; |
| 1115 | u8 irqstat; |
| 1116 | u8 signaling = sl811->ctrl1 & SL11H_CTL1MASK_FORCE; |
| 1117 | const u32 mask = (1 << USB_PORT_FEAT_CONNECTION) |
| 1118 | | (1 << USB_PORT_FEAT_ENABLE) |
| 1119 | | (1 << USB_PORT_FEAT_LOWSPEED); |
| 1120 | |
| 1121 | spin_lock_irqsave(&sl811->lock, flags); |
| 1122 | |
| 1123 | /* stop special signaling */ |
| 1124 | sl811->ctrl1 &= ~SL11H_CTL1MASK_FORCE; |
| 1125 | sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1); |
| 1126 | udelay(3); |
| 1127 | |
| 1128 | irqstat = sl811_read(sl811, SL11H_IRQ_STATUS); |
| 1129 | |
| 1130 | switch (signaling) { |
| 1131 | case SL11H_CTL1MASK_SE0: |
| 1132 | DBG("end reset\n"); |
| 1133 | sl811->port1 = (1 << USB_PORT_FEAT_C_RESET) |
| 1134 | | (1 << USB_PORT_FEAT_POWER); |
| 1135 | sl811->ctrl1 = 0; |
| 1136 | /* don't wrongly ack RD */ |
| 1137 | if (irqstat & SL11H_INTMASK_INSRMV) |
| 1138 | irqstat &= ~SL11H_INTMASK_RD; |
| 1139 | break; |
| 1140 | case SL11H_CTL1MASK_K: |
| 1141 | DBG("end resume\n"); |
| 1142 | sl811->port1 &= ~(1 << USB_PORT_FEAT_SUSPEND); |
| 1143 | break; |
| 1144 | default: |
| 1145 | DBG("odd timer signaling: %02x\n", signaling); |
| 1146 | break; |
| 1147 | } |
| 1148 | sl811_write(sl811, SL11H_IRQ_STATUS, irqstat); |
| 1149 | |
| 1150 | if (irqstat & SL11H_INTMASK_RD) { |
| 1151 | /* usbcore nukes all pending transactions on disconnect */ |
| 1152 | if (sl811->port1 & (1 << USB_PORT_FEAT_CONNECTION)) |
| 1153 | sl811->port1 |= (1 << USB_PORT_FEAT_C_CONNECTION) |
| 1154 | | (1 << USB_PORT_FEAT_C_ENABLE); |
| 1155 | sl811->port1 &= ~mask; |
| 1156 | sl811->irq_enable = SL11H_INTMASK_INSRMV; |
| 1157 | } else { |
| 1158 | sl811->port1 |= mask; |
| 1159 | if (irqstat & SL11H_INTMASK_DP) |
| 1160 | sl811->port1 &= ~(1 << USB_PORT_FEAT_LOWSPEED); |
| 1161 | sl811->irq_enable = SL11H_INTMASK_INSRMV | SL11H_INTMASK_RD; |
| 1162 | } |
| 1163 | |
| 1164 | if (sl811->port1 & (1 << USB_PORT_FEAT_CONNECTION)) { |
| 1165 | u8 ctrl2 = SL811HS_CTL2_INIT; |
| 1166 | |
| 1167 | sl811->irq_enable |= SL11H_INTMASK_DONE_A; |
| 1168 | #ifdef USE_B |
| 1169 | sl811->irq_enable |= SL11H_INTMASK_DONE_B; |
| 1170 | #endif |
| 1171 | if (sl811->port1 & (1 << USB_PORT_FEAT_LOWSPEED)) { |
| 1172 | sl811->ctrl1 |= SL11H_CTL1MASK_LSPD; |
| 1173 | ctrl2 |= SL811HS_CTL2MASK_DSWAP; |
| 1174 | } |
| 1175 | |
| 1176 | /* start SOFs flowing, kickstarting with A registers */ |
| 1177 | sl811->ctrl1 |= SL11H_CTL1MASK_SOF_ENA; |
| 1178 | sl811_write(sl811, SL11H_SOFLOWREG, 0xe0); |
| 1179 | sl811_write(sl811, SL811HS_CTLREG2, ctrl2); |
| 1180 | |
| 1181 | /* autoincrementing */ |
| 1182 | sl811_write(sl811, SL811_EP_A(SL11H_BUFLNTHREG), 0); |
| 1183 | writeb(SL_SOF, sl811->data_reg); |
| 1184 | writeb(0, sl811->data_reg); |
| 1185 | sl811_write(sl811, SL811_EP_A(SL11H_HOSTCTLREG), |
| 1186 | SL11H_HCTLMASK_ARM); |
| 1187 | |
| 1188 | /* khubd provides debounce delay */ |
| 1189 | } else { |
| 1190 | sl811->ctrl1 = 0; |
| 1191 | } |
| 1192 | sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1); |
| 1193 | |
| 1194 | /* reenable irqs */ |
| 1195 | sl811_write(sl811, SL11H_IRQ_ENABLE, sl811->irq_enable); |
| 1196 | spin_unlock_irqrestore(&sl811->lock, flags); |
| 1197 | } |
| 1198 | |
| 1199 | static int |
| 1200 | sl811h_hub_control( |
| 1201 | struct usb_hcd *hcd, |
| 1202 | u16 typeReq, |
| 1203 | u16 wValue, |
| 1204 | u16 wIndex, |
| 1205 | char *buf, |
| 1206 | u16 wLength |
| 1207 | ) { |
| 1208 | struct sl811 *sl811 = hcd_to_sl811(hcd); |
| 1209 | int retval = 0; |
| 1210 | unsigned long flags; |
| 1211 | |
| 1212 | spin_lock_irqsave(&sl811->lock, flags); |
| 1213 | |
| 1214 | switch (typeReq) { |
| 1215 | case ClearHubFeature: |
| 1216 | case SetHubFeature: |
| 1217 | switch (wValue) { |
| 1218 | case C_HUB_OVER_CURRENT: |
| 1219 | case C_HUB_LOCAL_POWER: |
| 1220 | break; |
| 1221 | default: |
| 1222 | goto error; |
| 1223 | } |
| 1224 | break; |
| 1225 | case ClearPortFeature: |
| 1226 | if (wIndex != 1 || wLength != 0) |
| 1227 | goto error; |
| 1228 | |
| 1229 | switch (wValue) { |
| 1230 | case USB_PORT_FEAT_ENABLE: |
| 1231 | sl811->port1 &= (1 << USB_PORT_FEAT_POWER); |
| 1232 | sl811->ctrl1 = 0; |
| 1233 | sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1); |
| 1234 | sl811->irq_enable = SL11H_INTMASK_INSRMV; |
| 1235 | sl811_write(sl811, SL11H_IRQ_ENABLE, |
| 1236 | sl811->irq_enable); |
| 1237 | break; |
| 1238 | case USB_PORT_FEAT_SUSPEND: |
| 1239 | if (!(sl811->port1 & (1 << USB_PORT_FEAT_SUSPEND))) |
| 1240 | break; |
| 1241 | |
| 1242 | /* 20 msec of resume/K signaling, other irqs blocked */ |
| 1243 | DBG("start resume...\n"); |
| 1244 | sl811->irq_enable = 0; |
| 1245 | sl811_write(sl811, SL11H_IRQ_ENABLE, |
| 1246 | sl811->irq_enable); |
| 1247 | sl811->ctrl1 |= SL11H_CTL1MASK_K; |
| 1248 | sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1); |
| 1249 | |
| 1250 | mod_timer(&sl811->timer, jiffies |
| 1251 | + msecs_to_jiffies(20)); |
| 1252 | break; |
| 1253 | case USB_PORT_FEAT_POWER: |
| 1254 | port_power(sl811, 0); |
| 1255 | break; |
| 1256 | case USB_PORT_FEAT_C_ENABLE: |
| 1257 | case USB_PORT_FEAT_C_SUSPEND: |
| 1258 | case USB_PORT_FEAT_C_CONNECTION: |
| 1259 | case USB_PORT_FEAT_C_OVER_CURRENT: |
| 1260 | case USB_PORT_FEAT_C_RESET: |
| 1261 | break; |
| 1262 | default: |
| 1263 | goto error; |
| 1264 | } |
| 1265 | sl811->port1 &= ~(1 << wValue); |
| 1266 | break; |
| 1267 | case GetHubDescriptor: |
| 1268 | sl811h_hub_descriptor(sl811, (struct usb_hub_descriptor *) buf); |
| 1269 | break; |
| 1270 | case GetHubStatus: |
| 1271 | *(__le32 *) buf = cpu_to_le32(0); |
| 1272 | break; |
| 1273 | case GetPortStatus: |
| 1274 | if (wIndex != 1) |
| 1275 | goto error; |
| 1276 | *(__le32 *) buf = cpu_to_le32(sl811->port1); |
| 1277 | |
| 1278 | #ifndef VERBOSE |
| 1279 | if (*(u16*)(buf+2)) /* only if wPortChange is interesting */ |
| 1280 | #endif |
| 1281 | DBG("GetPortStatus %08x\n", sl811->port1); |
| 1282 | break; |
| 1283 | case SetPortFeature: |
| 1284 | if (wIndex != 1 || wLength != 0) |
| 1285 | goto error; |
| 1286 | switch (wValue) { |
| 1287 | case USB_PORT_FEAT_SUSPEND: |
| 1288 | if (sl811->port1 & (1 << USB_PORT_FEAT_RESET)) |
| 1289 | goto error; |
| 1290 | if (!(sl811->port1 & (1 << USB_PORT_FEAT_ENABLE))) |
| 1291 | goto error; |
| 1292 | |
| 1293 | DBG("suspend...\n"); |
| 1294 | sl811->ctrl1 &= ~SL11H_CTL1MASK_SOF_ENA; |
| 1295 | sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1); |
| 1296 | break; |
| 1297 | case USB_PORT_FEAT_POWER: |
| 1298 | port_power(sl811, 1); |
| 1299 | break; |
| 1300 | case USB_PORT_FEAT_RESET: |
| 1301 | if (sl811->port1 & (1 << USB_PORT_FEAT_SUSPEND)) |
| 1302 | goto error; |
| 1303 | if (!(sl811->port1 & (1 << USB_PORT_FEAT_POWER))) |
| 1304 | break; |
| 1305 | |
| 1306 | /* 50 msec of reset/SE0 signaling, irqs blocked */ |
| 1307 | sl811->irq_enable = 0; |
| 1308 | sl811_write(sl811, SL11H_IRQ_ENABLE, |
| 1309 | sl811->irq_enable); |
| 1310 | sl811->ctrl1 = SL11H_CTL1MASK_SE0; |
| 1311 | sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1); |
| 1312 | sl811->port1 |= (1 << USB_PORT_FEAT_RESET); |
| 1313 | mod_timer(&sl811->timer, jiffies |
| 1314 | + msecs_to_jiffies(50)); |
| 1315 | break; |
| 1316 | default: |
| 1317 | goto error; |
| 1318 | } |
| 1319 | sl811->port1 |= 1 << wValue; |
| 1320 | break; |
| 1321 | |
| 1322 | default: |
| 1323 | error: |
| 1324 | /* "protocol stall" on error */ |
| 1325 | retval = -EPIPE; |
| 1326 | } |
| 1327 | |
| 1328 | spin_unlock_irqrestore(&sl811->lock, flags); |
| 1329 | return retval; |
| 1330 | } |
| 1331 | |
| 1332 | #ifdef CONFIG_PM |
| 1333 | |
| 1334 | static int |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 1335 | sl811h_bus_suspend(struct usb_hcd *hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | { |
| 1337 | // SOFs off |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1338 | DBG("%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | return 0; |
| 1340 | } |
| 1341 | |
| 1342 | static int |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 1343 | sl811h_bus_resume(struct usb_hcd *hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1344 | { |
| 1345 | // SOFs on |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1346 | DBG("%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | return 0; |
| 1348 | } |
| 1349 | |
| 1350 | #else |
| 1351 | |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 1352 | #define sl811h_bus_suspend NULL |
| 1353 | #define sl811h_bus_resume NULL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | |
| 1355 | #endif |
| 1356 | |
| 1357 | |
| 1358 | /*-------------------------------------------------------------------------*/ |
| 1359 | |
| 1360 | #ifdef STUB_DEBUG_FILE |
| 1361 | |
| 1362 | static inline void create_debug_file(struct sl811 *sl811) { } |
| 1363 | static inline void remove_debug_file(struct sl811 *sl811) { } |
| 1364 | |
| 1365 | #else |
| 1366 | |
| 1367 | #include <linux/proc_fs.h> |
| 1368 | #include <linux/seq_file.h> |
| 1369 | |
| 1370 | static void dump_irq(struct seq_file *s, char *label, u8 mask) |
| 1371 | { |
| 1372 | seq_printf(s, "%s %02x%s%s%s%s%s%s\n", label, mask, |
| 1373 | (mask & SL11H_INTMASK_DONE_A) ? " done_a" : "", |
| 1374 | (mask & SL11H_INTMASK_DONE_B) ? " done_b" : "", |
| 1375 | (mask & SL11H_INTMASK_SOFINTR) ? " sof" : "", |
| 1376 | (mask & SL11H_INTMASK_INSRMV) ? " ins/rmv" : "", |
| 1377 | (mask & SL11H_INTMASK_RD) ? " rd" : "", |
| 1378 | (mask & SL11H_INTMASK_DP) ? " dp" : ""); |
| 1379 | } |
| 1380 | |
| 1381 | static int proc_sl811h_show(struct seq_file *s, void *unused) |
| 1382 | { |
| 1383 | struct sl811 *sl811 = s->private; |
| 1384 | struct sl811h_ep *ep; |
| 1385 | unsigned i; |
| 1386 | |
| 1387 | seq_printf(s, "%s\n%s version %s\nportstatus[1] = %08x\n", |
| 1388 | sl811_to_hcd(sl811)->product_desc, |
| 1389 | hcd_name, DRIVER_VERSION, |
| 1390 | sl811->port1); |
| 1391 | |
| 1392 | seq_printf(s, "insert/remove: %ld\n", sl811->stat_insrmv); |
| 1393 | seq_printf(s, "current session: done_a %ld done_b %ld " |
| 1394 | "wake %ld sof %ld overrun %ld lost %ld\n\n", |
| 1395 | sl811->stat_a, sl811->stat_b, |
| 1396 | sl811->stat_wake, sl811->stat_sof, |
| 1397 | sl811->stat_overrun, sl811->stat_lost); |
| 1398 | |
| 1399 | spin_lock_irq(&sl811->lock); |
| 1400 | |
| 1401 | if (sl811->ctrl1 & SL11H_CTL1MASK_SUSPEND) |
| 1402 | seq_printf(s, "(suspended)\n\n"); |
| 1403 | else { |
| 1404 | u8 t = sl811_read(sl811, SL11H_CTLREG1); |
| 1405 | |
| 1406 | seq_printf(s, "ctrl1 %02x%s%s%s%s\n", t, |
| 1407 | (t & SL11H_CTL1MASK_SOF_ENA) ? " sofgen" : "", |
| 1408 | ({char *s; switch (t & SL11H_CTL1MASK_FORCE) { |
| 1409 | case SL11H_CTL1MASK_NORMAL: s = ""; break; |
| 1410 | case SL11H_CTL1MASK_SE0: s = " se0/reset"; break; |
| 1411 | case SL11H_CTL1MASK_K: s = " k/resume"; break; |
| 1412 | default: s = "j"; break; |
| 1413 | }; s; }), |
| 1414 | (t & SL11H_CTL1MASK_LSPD) ? " lowspeed" : "", |
| 1415 | (t & SL11H_CTL1MASK_SUSPEND) ? " suspend" : ""); |
| 1416 | |
| 1417 | dump_irq(s, "irq_enable", |
| 1418 | sl811_read(sl811, SL11H_IRQ_ENABLE)); |
| 1419 | dump_irq(s, "irq_status", |
| 1420 | sl811_read(sl811, SL11H_IRQ_STATUS)); |
| 1421 | seq_printf(s, "frame clocks remaining: %d\n", |
| 1422 | sl811_read(sl811, SL11H_SOFTMRREG) << 6); |
| 1423 | } |
| 1424 | |
| 1425 | seq_printf(s, "A: qh%p ctl %02x sts %02x\n", sl811->active_a, |
| 1426 | sl811_read(sl811, SL811_EP_A(SL11H_HOSTCTLREG)), |
| 1427 | sl811_read(sl811, SL811_EP_A(SL11H_PKTSTATREG))); |
| 1428 | seq_printf(s, "B: qh%p ctl %02x sts %02x\n", sl811->active_b, |
| 1429 | sl811_read(sl811, SL811_EP_B(SL11H_HOSTCTLREG)), |
| 1430 | sl811_read(sl811, SL811_EP_B(SL11H_PKTSTATREG))); |
| 1431 | seq_printf(s, "\n"); |
| 1432 | list_for_each_entry (ep, &sl811->async, schedule) { |
| 1433 | struct urb *urb; |
| 1434 | |
| 1435 | seq_printf(s, "%s%sqh%p, ep%d%s, maxpacket %d" |
| 1436 | " nak %d err %d\n", |
| 1437 | (ep == sl811->active_a) ? "(A) " : "", |
| 1438 | (ep == sl811->active_b) ? "(B) " : "", |
| 1439 | ep, ep->epnum, |
| 1440 | ({ char *s; switch (ep->nextpid) { |
| 1441 | case USB_PID_IN: s = "in"; break; |
| 1442 | case USB_PID_OUT: s = "out"; break; |
| 1443 | case USB_PID_SETUP: s = "setup"; break; |
| 1444 | case USB_PID_ACK: s = "status"; break; |
| 1445 | default: s = "?"; break; |
| 1446 | }; s;}), |
| 1447 | ep->maxpacket, |
| 1448 | ep->nak_count, ep->error_count); |
| 1449 | list_for_each_entry (urb, &ep->hep->urb_list, urb_list) { |
| 1450 | seq_printf(s, " urb%p, %d/%d\n", urb, |
| 1451 | urb->actual_length, |
| 1452 | urb->transfer_buffer_length); |
| 1453 | } |
| 1454 | } |
| 1455 | if (!list_empty(&sl811->async)) |
| 1456 | seq_printf(s, "\n"); |
| 1457 | |
| 1458 | seq_printf(s, "periodic size= %d\n", PERIODIC_SIZE); |
| 1459 | |
| 1460 | for (i = 0; i < PERIODIC_SIZE; i++) { |
| 1461 | ep = sl811->periodic[i]; |
| 1462 | if (!ep) |
| 1463 | continue; |
| 1464 | seq_printf(s, "%2d [%3d]:\n", i, sl811->load[i]); |
| 1465 | |
| 1466 | /* DUMB: prints shared entries multiple times */ |
| 1467 | do { |
| 1468 | seq_printf(s, |
| 1469 | " %s%sqh%d/%p (%sdev%d ep%d%s max %d) " |
| 1470 | "err %d\n", |
| 1471 | (ep == sl811->active_a) ? "(A) " : "", |
| 1472 | (ep == sl811->active_b) ? "(B) " : "", |
| 1473 | ep->period, ep, |
| 1474 | (ep->udev->speed == USB_SPEED_FULL) |
| 1475 | ? "" : "ls ", |
| 1476 | ep->udev->devnum, ep->epnum, |
| 1477 | (ep->epnum == 0) ? "" |
| 1478 | : ((ep->nextpid == USB_PID_IN) |
| 1479 | ? "in" |
| 1480 | : "out"), |
| 1481 | ep->maxpacket, ep->error_count); |
| 1482 | ep = ep->next; |
| 1483 | } while (ep); |
| 1484 | } |
| 1485 | |
| 1486 | spin_unlock_irq(&sl811->lock); |
| 1487 | seq_printf(s, "\n"); |
| 1488 | |
| 1489 | return 0; |
| 1490 | } |
| 1491 | |
| 1492 | static int proc_sl811h_open(struct inode *inode, struct file *file) |
| 1493 | { |
| 1494 | return single_open(file, proc_sl811h_show, PDE(inode)->data); |
| 1495 | } |
| 1496 | |
Luiz Fernando N. Capitulino | 066202d | 2006-08-05 20:37:11 -0300 | [diff] [blame] | 1497 | static const struct file_operations proc_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1498 | .open = proc_sl811h_open, |
| 1499 | .read = seq_read, |
| 1500 | .llseek = seq_lseek, |
| 1501 | .release = single_release, |
| 1502 | }; |
| 1503 | |
| 1504 | /* expect just one sl811 per system */ |
| 1505 | static const char proc_filename[] = "driver/sl811h"; |
| 1506 | |
| 1507 | static void create_debug_file(struct sl811 *sl811) |
| 1508 | { |
Denis V. Lunev | cdefa18 | 2008-04-29 01:02:19 -0700 | [diff] [blame] | 1509 | sl811->pde = proc_create_data(proc_filename, 0, NULL, &proc_ops, sl811); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1510 | } |
| 1511 | |
| 1512 | static void remove_debug_file(struct sl811 *sl811) |
| 1513 | { |
| 1514 | if (sl811->pde) |
| 1515 | remove_proc_entry(proc_filename, NULL); |
| 1516 | } |
| 1517 | |
| 1518 | #endif |
| 1519 | |
| 1520 | /*-------------------------------------------------------------------------*/ |
| 1521 | |
| 1522 | static void |
| 1523 | sl811h_stop(struct usb_hcd *hcd) |
| 1524 | { |
| 1525 | struct sl811 *sl811 = hcd_to_sl811(hcd); |
| 1526 | unsigned long flags; |
| 1527 | |
| 1528 | del_timer_sync(&hcd->rh_timer); |
| 1529 | |
| 1530 | spin_lock_irqsave(&sl811->lock, flags); |
| 1531 | port_power(sl811, 0); |
| 1532 | spin_unlock_irqrestore(&sl811->lock, flags); |
| 1533 | } |
| 1534 | |
| 1535 | static int |
| 1536 | sl811h_start(struct usb_hcd *hcd) |
| 1537 | { |
| 1538 | struct sl811 *sl811 = hcd_to_sl811(hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1539 | |
| 1540 | /* chip has been reset, VBUS power is off */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | hcd->state = HC_STATE_RUNNING; |
| 1542 | |
Alan Stern | bc96c0a | 2005-04-25 11:21:31 -0400 | [diff] [blame] | 1543 | if (sl811->board) { |
David Brownell | 0c8624f | 2005-11-07 15:31:25 -0800 | [diff] [blame] | 1544 | if (!device_can_wakeup(hcd->self.controller)) |
| 1545 | device_init_wakeup(hcd->self.controller, |
| 1546 | sl811->board->can_wakeup); |
Alan Stern | bc96c0a | 2005-04-25 11:21:31 -0400 | [diff] [blame] | 1547 | hcd->power_budget = sl811->board->power * 2; |
| 1548 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | |
Robert P. J. Day | 3a4fa0a | 2007-10-19 23:10:43 +0200 | [diff] [blame] | 1550 | /* enable power and interrupts */ |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1551 | port_power(sl811, 1); |
| 1552 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1553 | return 0; |
| 1554 | } |
| 1555 | |
| 1556 | /*-------------------------------------------------------------------------*/ |
| 1557 | |
| 1558 | static struct hc_driver sl811h_hc_driver = { |
| 1559 | .description = hcd_name, |
| 1560 | .hcd_priv_size = sizeof(struct sl811), |
| 1561 | |
| 1562 | /* |
| 1563 | * generic hardware linkage |
| 1564 | */ |
| 1565 | .irq = sl811h_irq, |
| 1566 | .flags = HCD_USB11 | HCD_MEMORY, |
| 1567 | |
| 1568 | /* Basic lifecycle operations */ |
| 1569 | .start = sl811h_start, |
| 1570 | .stop = sl811h_stop, |
| 1571 | |
| 1572 | /* |
| 1573 | * managing i/o requests and associated device resources |
| 1574 | */ |
| 1575 | .urb_enqueue = sl811h_urb_enqueue, |
| 1576 | .urb_dequeue = sl811h_urb_dequeue, |
| 1577 | .endpoint_disable = sl811h_endpoint_disable, |
| 1578 | |
| 1579 | /* |
| 1580 | * periodic schedule support |
| 1581 | */ |
| 1582 | .get_frame_number = sl811h_get_frame, |
| 1583 | |
| 1584 | /* |
| 1585 | * root hub support |
| 1586 | */ |
| 1587 | .hub_status_data = sl811h_hub_status_data, |
| 1588 | .hub_control = sl811h_hub_control, |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 1589 | .bus_suspend = sl811h_bus_suspend, |
| 1590 | .bus_resume = sl811h_bus_resume, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | }; |
| 1592 | |
| 1593 | /*-------------------------------------------------------------------------*/ |
| 1594 | |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1595 | static int __devexit |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1596 | sl811h_remove(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1597 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1598 | struct usb_hcd *hcd = platform_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1599 | struct sl811 *sl811 = hcd_to_sl811(hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1600 | struct resource *res; |
| 1601 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1602 | remove_debug_file(sl811); |
| 1603 | usb_remove_hcd(hcd); |
| 1604 | |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1605 | /* some platforms may use IORESOURCE_IO */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1606 | res = platform_get_resource(dev, IORESOURCE_MEM, 1); |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1607 | if (res) |
| 1608 | iounmap(sl811->data_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1609 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1610 | res = platform_get_resource(dev, IORESOURCE_MEM, 0); |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1611 | if (res) |
| 1612 | iounmap(sl811->addr_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1613 | |
| 1614 | usb_put_hcd(hcd); |
| 1615 | return 0; |
| 1616 | } |
| 1617 | |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1618 | static int __devinit |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1619 | sl811h_probe(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1620 | { |
| 1621 | struct usb_hcd *hcd; |
| 1622 | struct sl811 *sl811; |
Marc Zyngier | 2714021 | 2008-08-18 13:08:42 +0200 | [diff] [blame] | 1623 | struct resource *addr, *data, *ires; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1624 | int irq; |
| 1625 | void __iomem *addr_reg; |
| 1626 | void __iomem *data_reg; |
| 1627 | int retval; |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1628 | u8 tmp, ioaddr = 0; |
Marc Zyngier | 2714021 | 2008-08-18 13:08:42 +0200 | [diff] [blame] | 1629 | unsigned long irqflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1630 | |
| 1631 | /* basic sanity checks first. board-specific init logic should |
| 1632 | * have initialized these three resources and probably board |
| 1633 | * specific platform_data. we don't probe for IRQs, and do only |
| 1634 | * minimal sanity checking. |
| 1635 | */ |
Marc Zyngier | 2714021 | 2008-08-18 13:08:42 +0200 | [diff] [blame] | 1636 | ires = platform_get_resource(dev, IORESOURCE_IRQ, 0); |
| 1637 | if (dev->num_resources < 3 || !ires) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1638 | return -ENODEV; |
| 1639 | |
Marc Zyngier | 2714021 | 2008-08-18 13:08:42 +0200 | [diff] [blame] | 1640 | irq = ires->start; |
| 1641 | irqflags = ires->flags & IRQF_TRIGGER_MASK; |
| 1642 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | /* refuse to confuse usbcore */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1644 | if (dev->dev.dma_mask) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1645 | DBG("no we won't dma\n"); |
| 1646 | return -EINVAL; |
| 1647 | } |
| 1648 | |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1649 | /* the chip may be wired for either kind of addressing */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1650 | addr = platform_get_resource(dev, IORESOURCE_MEM, 0); |
| 1651 | data = platform_get_resource(dev, IORESOURCE_MEM, 1); |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1652 | retval = -EBUSY; |
| 1653 | if (!addr || !data) { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1654 | addr = platform_get_resource(dev, IORESOURCE_IO, 0); |
| 1655 | data = platform_get_resource(dev, IORESOURCE_IO, 1); |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1656 | if (!addr || !data) |
| 1657 | return -ENODEV; |
| 1658 | ioaddr = 1; |
Greg Kroah-Hartman | 2427ddd | 2006-06-12 17:07:52 -0700 | [diff] [blame] | 1659 | /* |
| 1660 | * NOTE: 64-bit resource->start is getting truncated |
| 1661 | * to avoid compiler warning, assuming that ->start |
| 1662 | * is always 32-bit for this case |
| 1663 | */ |
| 1664 | addr_reg = (void __iomem *) (unsigned long) addr->start; |
| 1665 | data_reg = (void __iomem *) (unsigned long) data->start; |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1666 | } else { |
| 1667 | addr_reg = ioremap(addr->start, 1); |
| 1668 | if (addr_reg == NULL) { |
| 1669 | retval = -ENOMEM; |
| 1670 | goto err2; |
| 1671 | } |
| 1672 | |
| 1673 | data_reg = ioremap(data->start, 1); |
| 1674 | if (data_reg == NULL) { |
| 1675 | retval = -ENOMEM; |
| 1676 | goto err4; |
| 1677 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1678 | } |
| 1679 | |
| 1680 | /* allocate and initialize hcd */ |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 1681 | hcd = usb_create_hcd(&sl811h_hc_driver, &dev->dev, dev_name(&dev->dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1682 | if (!hcd) { |
| 1683 | retval = -ENOMEM; |
| 1684 | goto err5; |
| 1685 | } |
| 1686 | hcd->rsrc_start = addr->start; |
| 1687 | sl811 = hcd_to_sl811(hcd); |
| 1688 | |
| 1689 | spin_lock_init(&sl811->lock); |
| 1690 | INIT_LIST_HEAD(&sl811->async); |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1691 | sl811->board = dev->dev.platform_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1692 | init_timer(&sl811->timer); |
| 1693 | sl811->timer.function = sl811h_timer; |
| 1694 | sl811->timer.data = (unsigned long) sl811; |
| 1695 | sl811->addr_reg = addr_reg; |
| 1696 | sl811->data_reg = data_reg; |
| 1697 | |
| 1698 | spin_lock_irq(&sl811->lock); |
| 1699 | port_power(sl811, 0); |
| 1700 | spin_unlock_irq(&sl811->lock); |
| 1701 | msleep(200); |
| 1702 | |
| 1703 | tmp = sl811_read(sl811, SL11H_HWREVREG); |
| 1704 | switch (tmp >> 4) { |
| 1705 | case 1: |
| 1706 | hcd->product_desc = "SL811HS v1.2"; |
| 1707 | break; |
| 1708 | case 2: |
| 1709 | hcd->product_desc = "SL811HS v1.5"; |
| 1710 | break; |
| 1711 | default: |
| 1712 | /* reject case 0, SL11S is less functional */ |
| 1713 | DBG("chiprev %02x\n", tmp); |
| 1714 | retval = -ENXIO; |
| 1715 | goto err6; |
| 1716 | } |
| 1717 | |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1718 | /* The chip's IRQ is level triggered, active high. A requirement |
| 1719 | * for platform device setup is to cope with things like signal |
| 1720 | * inverters (e.g. CF is active low) or working only with edge |
| 1721 | * triggers (e.g. most ARM CPUs). Initial driver stress testing |
| 1722 | * was on a system with single edge triggering, so most sorts of |
| 1723 | * triggering arrangement should work. |
Marc Zyngier | 2714021 | 2008-08-18 13:08:42 +0200 | [diff] [blame] | 1724 | * |
| 1725 | * Use resource IRQ flags if set by platform device setup. |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1726 | */ |
Marc Zyngier | 2714021 | 2008-08-18 13:08:42 +0200 | [diff] [blame] | 1727 | irqflags |= IRQF_SHARED; |
| 1728 | retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1729 | if (retval != 0) |
| 1730 | goto err6; |
| 1731 | |
| 1732 | create_debug_file(sl811); |
| 1733 | return retval; |
| 1734 | |
| 1735 | err6: |
| 1736 | usb_put_hcd(hcd); |
| 1737 | err5: |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1738 | if (!ioaddr) |
| 1739 | iounmap(data_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1740 | err4: |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1741 | if (!ioaddr) |
| 1742 | iounmap(addr_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1743 | err2: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1744 | DBG("init error, %d\n", retval); |
| 1745 | return retval; |
| 1746 | } |
| 1747 | |
| 1748 | #ifdef CONFIG_PM |
| 1749 | |
| 1750 | /* for this device there's no useful distinction between the controller |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1751 | * and its root hub, except that the root hub only gets direct PM calls |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | * when CONFIG_USB_SUSPEND is enabled. |
| 1753 | */ |
| 1754 | |
| 1755 | static int |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1756 | sl811h_suspend(struct platform_device *dev, pm_message_t state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1758 | struct usb_hcd *hcd = platform_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1759 | struct sl811 *sl811 = hcd_to_sl811(hcd); |
| 1760 | int retval = 0; |
| 1761 | |
David Brownell | 1858499 | 2006-08-14 23:11:06 -0700 | [diff] [blame] | 1762 | switch (state.event) { |
| 1763 | case PM_EVENT_FREEZE: |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 1764 | retval = sl811h_bus_suspend(hcd); |
David Brownell | 1858499 | 2006-08-14 23:11:06 -0700 | [diff] [blame] | 1765 | break; |
| 1766 | case PM_EVENT_SUSPEND: |
Rafael J. Wysocki | 3a2d5b7 | 2008-02-23 19:13:25 +0100 | [diff] [blame] | 1767 | case PM_EVENT_HIBERNATE: |
David Brownell | 1858499 | 2006-08-14 23:11:06 -0700 | [diff] [blame] | 1768 | case PM_EVENT_PRETHAW: /* explicitly discard hw state */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | port_power(sl811, 0); |
David Brownell | 1858499 | 2006-08-14 23:11:06 -0700 | [diff] [blame] | 1770 | break; |
| 1771 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1772 | return retval; |
| 1773 | } |
| 1774 | |
| 1775 | static int |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1776 | sl811h_resume(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1777 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1778 | struct usb_hcd *hcd = platform_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1779 | struct sl811 *sl811 = hcd_to_sl811(hcd); |
| 1780 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1781 | /* with no "check to see if VBUS is still powered" board hook, |
| 1782 | * let's assume it'd only be powered to enable remote wakeup. |
| 1783 | */ |
Alan Stern | 70a1c9e | 2008-03-06 17:00:58 -0500 | [diff] [blame] | 1784 | if (!sl811->port1 || !device_can_wakeup(&hcd->self.root_hub->dev)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | sl811->port1 = 0; |
| 1786 | port_power(sl811, 1); |
Alan Stern | 1c50c31 | 2005-11-14 11:45:38 -0500 | [diff] [blame] | 1787 | usb_root_hub_lost_power(hcd->self.root_hub); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | return 0; |
| 1789 | } |
| 1790 | |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 1791 | return sl811h_bus_resume(hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1792 | } |
| 1793 | |
| 1794 | #else |
| 1795 | |
| 1796 | #define sl811h_suspend NULL |
| 1797 | #define sl811h_resume NULL |
| 1798 | |
| 1799 | #endif |
| 1800 | |
| 1801 | |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1802 | /* this driver is exported so sl811_cs can depend on it */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1803 | struct platform_driver sl811h_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1804 | .probe = sl811h_probe, |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1805 | .remove = __devexit_p(sl811h_remove), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1806 | |
| 1807 | .suspend = sl811h_suspend, |
| 1808 | .resume = sl811h_resume, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1809 | .driver = { |
| 1810 | .name = (char *) hcd_name, |
| 1811 | .owner = THIS_MODULE, |
| 1812 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1813 | }; |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1814 | EXPORT_SYMBOL(sl811h_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1815 | |
| 1816 | /*-------------------------------------------------------------------------*/ |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1817 | |
| 1818 | static int __init sl811h_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | { |
| 1820 | if (usb_disabled()) |
| 1821 | return -ENODEV; |
| 1822 | |
| 1823 | INFO("driver %s, %s\n", hcd_name, DRIVER_VERSION); |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1824 | return platform_driver_register(&sl811h_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1825 | } |
| 1826 | module_init(sl811h_init); |
| 1827 | |
David Brownell | 1e9a47b | 2005-05-26 05:55:55 -0700 | [diff] [blame] | 1828 | static void __exit sl811h_cleanup(void) |
| 1829 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1830 | platform_driver_unregister(&sl811h_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1831 | } |
| 1832 | module_exit(sl811h_cleanup); |