Lothar Wassmann | a9d4309 | 2009-07-16 20:51:21 -0400 | [diff] [blame] | 1 | /* |
| 2 | * ISP1362 HCD (Host Controller Driver) for USB. |
| 3 | * |
| 4 | * Copyright (C) 2005 Lothar Wassmann <LW@KARO-electronics.de> |
| 5 | * |
| 6 | * Derived from the SL811 HCD, rewritten for ISP116x. |
| 7 | * Copyright (C) 2005 Olav Kongas <ok@artecdesign.ee> |
| 8 | * |
| 9 | * Portions: |
| 10 | * Copyright (C) 2004 Psion Teklogix (for NetBook PRO) |
| 11 | * Copyright (C) 2004 David Brownell |
| 12 | */ |
| 13 | |
| 14 | /* |
| 15 | * The ISP1362 chip requires a large delay (300ns and 462ns) between |
| 16 | * accesses to the address and data register. |
| 17 | * The following timing options exist: |
| 18 | * |
| 19 | * 1. Configure your memory controller to add such delays if it can (the best) |
| 20 | * 2. Implement platform-specific delay function possibly |
| 21 | * combined with configuring the memory controller; see |
| 22 | * include/linux/usb_isp1362.h for more info. |
| 23 | * 3. Use ndelay (easiest, poorest). |
| 24 | * |
| 25 | * Use the corresponding macros USE_PLATFORM_DELAY and USE_NDELAY in the |
| 26 | * platform specific section of isp1362.h to select the appropriate variant. |
| 27 | * |
| 28 | * Also note that according to the Philips "ISP1362 Errata" document |
| 29 | * Rev 1.00 from 27 May data corruption may occur when the #WR signal |
| 30 | * is reasserted (even with #CS deasserted) within 132ns after a |
| 31 | * write cycle to any controller register. If the hardware doesn't |
| 32 | * implement the recommended fix (gating the #WR with #CS) software |
| 33 | * must ensure that no further write cycle (not necessarily to the chip!) |
| 34 | * is issued by the CPU within this interval. |
| 35 | |
| 36 | * For PXA25x this can be ensured by using VLIO with the maximum |
| 37 | * recovery time (MSCx = 0x7f8c) with a memory clock of 99.53 MHz. |
| 38 | */ |
| 39 | |
| 40 | #ifdef CONFIG_USB_DEBUG |
| 41 | # define ISP1362_DEBUG |
| 42 | #else |
| 43 | # undef ISP1362_DEBUG |
| 44 | #endif |
| 45 | |
| 46 | /* |
| 47 | * The PXA255 UDC apparently doesn't handle GET_STATUS, GET_CONFIG and |
| 48 | * GET_INTERFACE requests correctly when the SETUP and DATA stages of the |
| 49 | * requests are carried out in separate frames. This will delay any SETUP |
| 50 | * packets until the start of the next frame so that this situation is |
| 51 | * unlikely to occur (and makes usbtest happy running with a PXA255 target |
| 52 | * device). |
| 53 | */ |
| 54 | #undef BUGGY_PXA2XX_UDC_USBTEST |
| 55 | |
| 56 | #undef PTD_TRACE |
| 57 | #undef URB_TRACE |
| 58 | #undef VERBOSE |
| 59 | #undef REGISTERS |
| 60 | |
| 61 | /* This enables a memory test on the ISP1362 chip memory to make sure the |
| 62 | * chip access timing is correct. |
| 63 | */ |
| 64 | #undef CHIP_BUFFER_TEST |
| 65 | |
| 66 | #include <linux/module.h> |
| 67 | #include <linux/moduleparam.h> |
| 68 | #include <linux/kernel.h> |
| 69 | #include <linux/delay.h> |
| 70 | #include <linux/ioport.h> |
| 71 | #include <linux/sched.h> |
| 72 | #include <linux/slab.h> |
| 73 | #include <linux/smp_lock.h> |
| 74 | #include <linux/errno.h> |
| 75 | #include <linux/init.h> |
| 76 | #include <linux/list.h> |
| 77 | #include <linux/interrupt.h> |
| 78 | #include <linux/usb.h> |
| 79 | #include <linux/usb/isp1362.h> |
| 80 | #include <linux/platform_device.h> |
| 81 | #include <linux/pm.h> |
| 82 | #include <linux/io.h> |
| 83 | #include <linux/bitops.h> |
| 84 | |
| 85 | #include <asm/irq.h> |
| 86 | #include <asm/system.h> |
| 87 | #include <asm/byteorder.h> |
| 88 | #include <asm/unaligned.h> |
| 89 | |
| 90 | static int dbg_level; |
| 91 | #ifdef ISP1362_DEBUG |
| 92 | module_param(dbg_level, int, 0644); |
| 93 | #else |
| 94 | module_param(dbg_level, int, 0); |
| 95 | #define STUB_DEBUG_FILE |
| 96 | #endif |
| 97 | |
| 98 | #include "../core/hcd.h" |
| 99 | #include "../core/usb.h" |
| 100 | #include "isp1362.h" |
| 101 | |
| 102 | |
| 103 | #define DRIVER_VERSION "2005-04-04" |
| 104 | #define DRIVER_DESC "ISP1362 USB Host Controller Driver" |
| 105 | |
| 106 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 107 | MODULE_LICENSE("GPL"); |
| 108 | |
| 109 | static const char hcd_name[] = "isp1362-hcd"; |
| 110 | |
| 111 | static void isp1362_hc_stop(struct usb_hcd *hcd); |
| 112 | static int isp1362_hc_start(struct usb_hcd *hcd); |
| 113 | |
| 114 | /*-------------------------------------------------------------------------*/ |
| 115 | |
| 116 | /* |
| 117 | * When called from the interrupthandler only isp1362_hcd->irqenb is modified, |
| 118 | * since the interrupt handler will write isp1362_hcd->irqenb to HCuPINT upon |
| 119 | * completion. |
| 120 | * We don't need a 'disable' counterpart, since interrupts will be disabled |
| 121 | * only by the interrupt handler. |
| 122 | */ |
| 123 | static inline void isp1362_enable_int(struct isp1362_hcd *isp1362_hcd, u16 mask) |
| 124 | { |
| 125 | if ((isp1362_hcd->irqenb | mask) == isp1362_hcd->irqenb) |
| 126 | return; |
| 127 | if (mask & ~isp1362_hcd->irqenb) |
| 128 | isp1362_write_reg16(isp1362_hcd, HCuPINT, mask & ~isp1362_hcd->irqenb); |
| 129 | isp1362_hcd->irqenb |= mask; |
| 130 | if (isp1362_hcd->irq_active) |
| 131 | return; |
| 132 | isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); |
| 133 | } |
| 134 | |
| 135 | /*-------------------------------------------------------------------------*/ |
| 136 | |
| 137 | static inline struct isp1362_ep_queue *get_ptd_queue(struct isp1362_hcd *isp1362_hcd, |
| 138 | u16 offset) |
| 139 | { |
| 140 | struct isp1362_ep_queue *epq = NULL; |
| 141 | |
| 142 | if (offset < isp1362_hcd->istl_queue[1].buf_start) |
| 143 | epq = &isp1362_hcd->istl_queue[0]; |
| 144 | else if (offset < isp1362_hcd->intl_queue.buf_start) |
| 145 | epq = &isp1362_hcd->istl_queue[1]; |
| 146 | else if (offset < isp1362_hcd->atl_queue.buf_start) |
| 147 | epq = &isp1362_hcd->intl_queue; |
| 148 | else if (offset < isp1362_hcd->atl_queue.buf_start + |
| 149 | isp1362_hcd->atl_queue.buf_size) |
| 150 | epq = &isp1362_hcd->atl_queue; |
| 151 | |
| 152 | if (epq) |
| 153 | DBG(1, "%s: PTD $%04x is on %s queue\n", __func__, offset, epq->name); |
| 154 | else |
| 155 | pr_warning("%s: invalid PTD $%04x\n", __func__, offset); |
| 156 | |
| 157 | return epq; |
| 158 | } |
| 159 | |
| 160 | static inline int get_ptd_offset(struct isp1362_ep_queue *epq, u8 index) |
| 161 | { |
| 162 | int offset; |
| 163 | |
| 164 | if (index * epq->blk_size > epq->buf_size) { |
| 165 | pr_warning("%s: Bad %s index %d(%d)\n", __func__, epq->name, index, |
| 166 | epq->buf_size / epq->blk_size); |
| 167 | return -EINVAL; |
| 168 | } |
| 169 | offset = epq->buf_start + index * epq->blk_size; |
| 170 | DBG(3, "%s: %s PTD[%02x] # %04x\n", __func__, epq->name, index, offset); |
| 171 | |
| 172 | return offset; |
| 173 | } |
| 174 | |
| 175 | /*-------------------------------------------------------------------------*/ |
| 176 | |
| 177 | static inline u16 max_transfer_size(struct isp1362_ep_queue *epq, size_t size, |
| 178 | int mps) |
| 179 | { |
| 180 | u16 xfer_size = min_t(size_t, MAX_XFER_SIZE, size); |
| 181 | |
| 182 | xfer_size = min_t(size_t, xfer_size, epq->buf_avail * epq->blk_size - PTD_HEADER_SIZE); |
| 183 | if (xfer_size < size && xfer_size % mps) |
| 184 | xfer_size -= xfer_size % mps; |
| 185 | |
| 186 | return xfer_size; |
| 187 | } |
| 188 | |
| 189 | static int claim_ptd_buffers(struct isp1362_ep_queue *epq, |
| 190 | struct isp1362_ep *ep, u16 len) |
| 191 | { |
| 192 | int ptd_offset = -EINVAL; |
| 193 | int index; |
| 194 | int num_ptds = ((len + PTD_HEADER_SIZE - 1) / epq->blk_size) + 1; |
| 195 | int found = -1; |
| 196 | int last = -1; |
| 197 | |
| 198 | BUG_ON(len > epq->buf_size); |
| 199 | |
| 200 | if (!epq->buf_avail) |
| 201 | return -ENOMEM; |
| 202 | |
| 203 | if (ep->num_ptds) |
| 204 | pr_err("%s: %s len %d/%d num_ptds %d buf_map %08lx skip_map %08lx\n", __func__, |
| 205 | epq->name, len, epq->blk_size, num_ptds, epq->buf_map, epq->skip_map); |
| 206 | BUG_ON(ep->num_ptds != 0); |
| 207 | |
| 208 | for (index = 0; index <= epq->buf_count - num_ptds; index++) { |
| 209 | if (test_bit(index, &epq->buf_map)) |
| 210 | continue; |
| 211 | found = index; |
| 212 | for (last = index + 1; last < index + num_ptds; last++) { |
| 213 | if (test_bit(last, &epq->buf_map)) { |
| 214 | found = -1; |
| 215 | break; |
| 216 | } |
| 217 | } |
| 218 | if (found >= 0) |
| 219 | break; |
| 220 | } |
| 221 | if (found < 0) |
| 222 | return -EOVERFLOW; |
| 223 | |
| 224 | DBG(1, "%s: Found %d PTDs[%d] for %d/%d byte\n", __func__, |
| 225 | num_ptds, found, len, (int)(epq->blk_size - PTD_HEADER_SIZE)); |
| 226 | ptd_offset = get_ptd_offset(epq, found); |
| 227 | WARN_ON(ptd_offset < 0); |
| 228 | ep->ptd_offset = ptd_offset; |
| 229 | ep->num_ptds += num_ptds; |
| 230 | epq->buf_avail -= num_ptds; |
| 231 | BUG_ON(epq->buf_avail > epq->buf_count); |
| 232 | ep->ptd_index = found; |
| 233 | for (index = found; index < last; index++) |
| 234 | __set_bit(index, &epq->buf_map); |
| 235 | DBG(1, "%s: Done %s PTD[%d] $%04x, avail %d count %d claimed %d %08lx:%08lx\n", |
| 236 | __func__, epq->name, ep->ptd_index, ep->ptd_offset, |
| 237 | epq->buf_avail, epq->buf_count, num_ptds, epq->buf_map, epq->skip_map); |
| 238 | |
| 239 | return found; |
| 240 | } |
| 241 | |
| 242 | static inline void release_ptd_buffers(struct isp1362_ep_queue *epq, struct isp1362_ep *ep) |
| 243 | { |
| 244 | int index = ep->ptd_index; |
| 245 | int last = ep->ptd_index + ep->num_ptds; |
| 246 | |
| 247 | if (last > epq->buf_count) |
| 248 | pr_err("%s: ep %p req %d len %d %s PTD[%d] $%04x num_ptds %d buf_count %d buf_avail %d buf_map %08lx skip_map %08lx\n", |
| 249 | __func__, ep, ep->num_req, ep->length, epq->name, ep->ptd_index, |
| 250 | ep->ptd_offset, ep->num_ptds, epq->buf_count, epq->buf_avail, |
| 251 | epq->buf_map, epq->skip_map); |
| 252 | BUG_ON(last > epq->buf_count); |
| 253 | |
| 254 | for (; index < last; index++) { |
| 255 | __clear_bit(index, &epq->buf_map); |
| 256 | __set_bit(index, &epq->skip_map); |
| 257 | } |
| 258 | epq->buf_avail += ep->num_ptds; |
| 259 | epq->ptd_count--; |
| 260 | |
| 261 | BUG_ON(epq->buf_avail > epq->buf_count); |
| 262 | BUG_ON(epq->ptd_count > epq->buf_count); |
| 263 | |
| 264 | DBG(1, "%s: Done %s PTDs $%04x released %d avail %d count %d\n", |
| 265 | __func__, epq->name, |
| 266 | ep->ptd_offset, ep->num_ptds, epq->buf_avail, epq->buf_count); |
| 267 | DBG(1, "%s: buf_map %08lx skip_map %08lx\n", __func__, |
| 268 | epq->buf_map, epq->skip_map); |
| 269 | |
| 270 | ep->num_ptds = 0; |
| 271 | ep->ptd_offset = -EINVAL; |
| 272 | ep->ptd_index = -EINVAL; |
| 273 | } |
| 274 | |
| 275 | /*-------------------------------------------------------------------------*/ |
| 276 | |
| 277 | /* |
| 278 | Set up PTD's. |
| 279 | */ |
| 280 | static void prepare_ptd(struct isp1362_hcd *isp1362_hcd, struct urb *urb, |
| 281 | struct isp1362_ep *ep, struct isp1362_ep_queue *epq, |
| 282 | u16 fno) |
| 283 | { |
| 284 | struct ptd *ptd; |
| 285 | int toggle; |
| 286 | int dir; |
| 287 | u16 len; |
| 288 | size_t buf_len = urb->transfer_buffer_length - urb->actual_length; |
| 289 | |
| 290 | DBG(3, "%s: %s ep %p\n", __func__, epq->name, ep); |
| 291 | |
| 292 | ptd = &ep->ptd; |
| 293 | |
| 294 | ep->data = (unsigned char *)urb->transfer_buffer + urb->actual_length; |
| 295 | |
| 296 | switch (ep->nextpid) { |
| 297 | case USB_PID_IN: |
| 298 | toggle = usb_gettoggle(urb->dev, ep->epnum, 0); |
| 299 | dir = PTD_DIR_IN; |
| 300 | if (usb_pipecontrol(urb->pipe)) { |
| 301 | len = min_t(size_t, ep->maxpacket, buf_len); |
| 302 | } else if (usb_pipeisoc(urb->pipe)) { |
| 303 | len = min_t(size_t, urb->iso_frame_desc[fno].length, MAX_XFER_SIZE); |
| 304 | ep->data = urb->transfer_buffer + urb->iso_frame_desc[fno].offset; |
| 305 | } else |
| 306 | len = max_transfer_size(epq, buf_len, ep->maxpacket); |
| 307 | DBG(1, "%s: IN len %d/%d/%d from URB\n", __func__, len, ep->maxpacket, |
| 308 | (int)buf_len); |
| 309 | break; |
| 310 | case USB_PID_OUT: |
| 311 | toggle = usb_gettoggle(urb->dev, ep->epnum, 1); |
| 312 | dir = PTD_DIR_OUT; |
| 313 | if (usb_pipecontrol(urb->pipe)) |
| 314 | len = min_t(size_t, ep->maxpacket, buf_len); |
| 315 | else if (usb_pipeisoc(urb->pipe)) |
| 316 | len = min_t(size_t, urb->iso_frame_desc[0].length, MAX_XFER_SIZE); |
| 317 | else |
| 318 | len = max_transfer_size(epq, buf_len, ep->maxpacket); |
| 319 | if (len == 0) |
| 320 | pr_info("%s: Sending ZERO packet: %d\n", __func__, |
| 321 | urb->transfer_flags & URB_ZERO_PACKET); |
| 322 | DBG(1, "%s: OUT len %d/%d/%d from URB\n", __func__, len, ep->maxpacket, |
| 323 | (int)buf_len); |
| 324 | break; |
| 325 | case USB_PID_SETUP: |
| 326 | toggle = 0; |
| 327 | dir = PTD_DIR_SETUP; |
| 328 | len = sizeof(struct usb_ctrlrequest); |
| 329 | DBG(1, "%s: SETUP len %d\n", __func__, len); |
| 330 | ep->data = urb->setup_packet; |
| 331 | break; |
| 332 | case USB_PID_ACK: |
| 333 | toggle = 1; |
| 334 | len = 0; |
| 335 | dir = (urb->transfer_buffer_length && usb_pipein(urb->pipe)) ? |
| 336 | PTD_DIR_OUT : PTD_DIR_IN; |
| 337 | DBG(1, "%s: ACK len %d\n", __func__, len); |
| 338 | break; |
| 339 | default: |
| 340 | toggle = dir = len = 0; |
| 341 | pr_err("%s@%d: ep->nextpid %02x\n", __func__, __LINE__, ep->nextpid); |
| 342 | BUG_ON(1); |
| 343 | } |
| 344 | |
| 345 | ep->length = len; |
| 346 | if (!len) |
| 347 | ep->data = NULL; |
| 348 | |
| 349 | ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK | PTD_TOGGLE(toggle); |
| 350 | ptd->mps = PTD_MPS(ep->maxpacket) | PTD_SPD(urb->dev->speed == USB_SPEED_LOW) | |
| 351 | PTD_EP(ep->epnum); |
| 352 | ptd->len = PTD_LEN(len) | PTD_DIR(dir); |
| 353 | ptd->faddr = PTD_FA(usb_pipedevice(urb->pipe)); |
| 354 | |
| 355 | if (usb_pipeint(urb->pipe)) { |
| 356 | ptd->faddr |= PTD_SF_INT(ep->branch); |
| 357 | ptd->faddr |= PTD_PR(ep->interval ? __ffs(ep->interval) : 0); |
| 358 | } |
| 359 | if (usb_pipeisoc(urb->pipe)) |
| 360 | ptd->faddr |= PTD_SF_ISO(fno); |
| 361 | |
| 362 | DBG(1, "%s: Finished\n", __func__); |
| 363 | } |
| 364 | |
| 365 | static void isp1362_write_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, |
| 366 | struct isp1362_ep_queue *epq) |
| 367 | { |
| 368 | struct ptd *ptd = &ep->ptd; |
| 369 | int len = PTD_GET_DIR(ptd) == PTD_DIR_IN ? 0 : ep->length; |
| 370 | |
| 371 | _BUG_ON(ep->ptd_offset < 0); |
| 372 | |
| 373 | prefetch(ptd); |
| 374 | isp1362_write_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE); |
| 375 | if (len) |
| 376 | isp1362_write_buffer(isp1362_hcd, ep->data, |
| 377 | ep->ptd_offset + PTD_HEADER_SIZE, len); |
| 378 | |
| 379 | dump_ptd(ptd); |
| 380 | dump_ptd_out_data(ptd, ep->data); |
| 381 | } |
| 382 | |
| 383 | static void isp1362_read_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, |
| 384 | struct isp1362_ep_queue *epq) |
| 385 | { |
| 386 | struct ptd *ptd = &ep->ptd; |
| 387 | int act_len; |
| 388 | |
| 389 | WARN_ON(list_empty(&ep->active)); |
| 390 | BUG_ON(ep->ptd_offset < 0); |
| 391 | |
| 392 | list_del_init(&ep->active); |
| 393 | DBG(1, "%s: ep %p removed from active list %p\n", __func__, ep, &epq->active); |
| 394 | |
| 395 | prefetchw(ptd); |
| 396 | isp1362_read_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE); |
| 397 | dump_ptd(ptd); |
| 398 | act_len = PTD_GET_COUNT(ptd); |
| 399 | if (PTD_GET_DIR(ptd) != PTD_DIR_IN || act_len == 0) |
| 400 | return; |
| 401 | if (act_len > ep->length) |
| 402 | pr_err("%s: ep %p PTD $%04x act_len %d ep->length %d\n", __func__, ep, |
| 403 | ep->ptd_offset, act_len, ep->length); |
| 404 | BUG_ON(act_len > ep->length); |
| 405 | /* Only transfer the amount of data that has actually been overwritten |
| 406 | * in the chip buffer. We don't want any data that doesn't belong to the |
| 407 | * transfer to leak out of the chip to the callers transfer buffer! |
| 408 | */ |
| 409 | prefetchw(ep->data); |
| 410 | isp1362_read_buffer(isp1362_hcd, ep->data, |
| 411 | ep->ptd_offset + PTD_HEADER_SIZE, act_len); |
| 412 | dump_ptd_in_data(ptd, ep->data); |
| 413 | } |
| 414 | |
| 415 | /* |
| 416 | * INT PTDs will stay in the chip until data is available. |
| 417 | * This function will remove a PTD from the chip when the URB is dequeued. |
| 418 | * Must be called with the spinlock held and IRQs disabled |
| 419 | */ |
| 420 | static void remove_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep) |
| 421 | |
| 422 | { |
| 423 | int index; |
| 424 | struct isp1362_ep_queue *epq; |
| 425 | |
| 426 | DBG(1, "%s: ep %p PTD[%d] $%04x\n", __func__, ep, ep->ptd_index, ep->ptd_offset); |
| 427 | BUG_ON(ep->ptd_offset < 0); |
| 428 | |
| 429 | epq = get_ptd_queue(isp1362_hcd, ep->ptd_offset); |
| 430 | BUG_ON(!epq); |
| 431 | |
| 432 | /* put ep in remove_list for cleanup */ |
| 433 | WARN_ON(!list_empty(&ep->remove_list)); |
| 434 | list_add_tail(&ep->remove_list, &isp1362_hcd->remove_list); |
| 435 | /* let SOF interrupt handle the cleanup */ |
| 436 | isp1362_enable_int(isp1362_hcd, HCuPINT_SOF); |
| 437 | |
| 438 | index = ep->ptd_index; |
| 439 | if (index < 0) |
| 440 | /* ISO queues don't have SKIP registers */ |
| 441 | return; |
| 442 | |
| 443 | DBG(1, "%s: Disabling PTD[%02x] $%04x %08lx|%08x\n", __func__, |
| 444 | index, ep->ptd_offset, epq->skip_map, 1 << index); |
| 445 | |
| 446 | /* prevent further processing of PTD (will be effective after next SOF) */ |
| 447 | epq->skip_map |= 1 << index; |
| 448 | if (epq == &isp1362_hcd->atl_queue) { |
| 449 | DBG(2, "%s: ATLSKIP = %08x -> %08lx\n", __func__, |
| 450 | isp1362_read_reg32(isp1362_hcd, HCATLSKIP), epq->skip_map); |
| 451 | isp1362_write_reg32(isp1362_hcd, HCATLSKIP, epq->skip_map); |
| 452 | if (~epq->skip_map == 0) |
| 453 | isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); |
| 454 | } else if (epq == &isp1362_hcd->intl_queue) { |
| 455 | DBG(2, "%s: INTLSKIP = %08x -> %08lx\n", __func__, |
| 456 | isp1362_read_reg32(isp1362_hcd, HCINTLSKIP), epq->skip_map); |
| 457 | isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, epq->skip_map); |
| 458 | if (~epq->skip_map == 0) |
| 459 | isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | /* |
| 464 | Take done or failed requests out of schedule. Give back |
| 465 | processed urbs. |
| 466 | */ |
| 467 | static void finish_request(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, |
| 468 | struct urb *urb, int status) |
| 469 | __releases(isp1362_hcd->lock) |
| 470 | __acquires(isp1362_hcd->lock) |
| 471 | { |
| 472 | urb->hcpriv = NULL; |
| 473 | ep->error_count = 0; |
| 474 | |
| 475 | if (usb_pipecontrol(urb->pipe)) |
| 476 | ep->nextpid = USB_PID_SETUP; |
| 477 | |
| 478 | URB_DBG("%s: req %d FA %d ep%d%s %s: len %d/%d %s stat %d\n", __func__, |
| 479 | ep->num_req, usb_pipedevice(urb->pipe), |
| 480 | usb_pipeendpoint(urb->pipe), |
| 481 | !usb_pipein(urb->pipe) ? "out" : "in", |
| 482 | usb_pipecontrol(urb->pipe) ? "ctrl" : |
| 483 | usb_pipeint(urb->pipe) ? "int" : |
| 484 | usb_pipebulk(urb->pipe) ? "bulk" : |
| 485 | "iso", |
| 486 | urb->actual_length, urb->transfer_buffer_length, |
| 487 | !(urb->transfer_flags & URB_SHORT_NOT_OK) ? |
| 488 | "short_ok" : "", urb->status); |
| 489 | |
| 490 | |
| 491 | usb_hcd_unlink_urb_from_ep(isp1362_hcd_to_hcd(isp1362_hcd), urb); |
| 492 | spin_unlock(&isp1362_hcd->lock); |
| 493 | usb_hcd_giveback_urb(isp1362_hcd_to_hcd(isp1362_hcd), urb, status); |
| 494 | spin_lock(&isp1362_hcd->lock); |
| 495 | |
| 496 | /* take idle endpoints out of the schedule right away */ |
| 497 | if (!list_empty(&ep->hep->urb_list)) |
| 498 | return; |
| 499 | |
| 500 | /* async deschedule */ |
| 501 | if (!list_empty(&ep->schedule)) { |
| 502 | list_del_init(&ep->schedule); |
| 503 | return; |
| 504 | } |
| 505 | |
| 506 | |
| 507 | if (ep->interval) { |
| 508 | /* periodic deschedule */ |
| 509 | DBG(1, "deschedule qh%d/%p branch %d load %d bandwidth %d -> %d\n", ep->interval, |
| 510 | ep, ep->branch, ep->load, |
| 511 | isp1362_hcd->load[ep->branch], |
| 512 | isp1362_hcd->load[ep->branch] - ep->load); |
| 513 | isp1362_hcd->load[ep->branch] -= ep->load; |
| 514 | ep->branch = PERIODIC_SIZE; |
| 515 | } |
| 516 | } |
| 517 | |
| 518 | /* |
| 519 | * Analyze transfer results, handle partial transfers and errors |
| 520 | */ |
| 521 | static void postproc_ep(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep) |
| 522 | { |
| 523 | struct urb *urb = get_urb(ep); |
| 524 | struct usb_device *udev; |
| 525 | struct ptd *ptd; |
| 526 | int short_ok; |
| 527 | u16 len; |
| 528 | int urbstat = -EINPROGRESS; |
| 529 | u8 cc; |
| 530 | |
| 531 | DBG(2, "%s: ep %p req %d\n", __func__, ep, ep->num_req); |
| 532 | |
| 533 | udev = urb->dev; |
| 534 | ptd = &ep->ptd; |
| 535 | cc = PTD_GET_CC(ptd); |
| 536 | if (cc == PTD_NOTACCESSED) { |
| 537 | pr_err("%s: req %d PTD %p Untouched by ISP1362\n", __func__, |
| 538 | ep->num_req, ptd); |
| 539 | cc = PTD_DEVNOTRESP; |
| 540 | } |
| 541 | |
| 542 | short_ok = !(urb->transfer_flags & URB_SHORT_NOT_OK); |
| 543 | len = urb->transfer_buffer_length - urb->actual_length; |
| 544 | |
| 545 | /* Data underrun is special. For allowed underrun |
| 546 | we clear the error and continue as normal. For |
| 547 | forbidden underrun we finish the DATA stage |
| 548 | immediately while for control transfer, |
| 549 | we do a STATUS stage. |
| 550 | */ |
| 551 | if (cc == PTD_DATAUNDERRUN) { |
| 552 | if (short_ok) { |
| 553 | DBG(1, "%s: req %d Allowed data underrun short_%sok %d/%d/%d byte\n", |
| 554 | __func__, ep->num_req, short_ok ? "" : "not_", |
| 555 | PTD_GET_COUNT(ptd), ep->maxpacket, len); |
| 556 | cc = PTD_CC_NOERROR; |
| 557 | urbstat = 0; |
| 558 | } else { |
| 559 | DBG(1, "%s: req %d Data Underrun %s nextpid %02x short_%sok %d/%d/%d byte\n", |
| 560 | __func__, ep->num_req, |
| 561 | usb_pipein(urb->pipe) ? "IN" : "OUT", ep->nextpid, |
| 562 | short_ok ? "" : "not_", |
| 563 | PTD_GET_COUNT(ptd), ep->maxpacket, len); |
| 564 | if (usb_pipecontrol(urb->pipe)) { |
| 565 | ep->nextpid = USB_PID_ACK; |
| 566 | /* save the data underrun error code for later and |
| 567 | * procede with the status stage |
| 568 | */ |
| 569 | urb->actual_length += PTD_GET_COUNT(ptd); |
| 570 | BUG_ON(urb->actual_length > urb->transfer_buffer_length); |
| 571 | |
| 572 | if (urb->status == -EINPROGRESS) |
| 573 | urb->status = cc_to_error[PTD_DATAUNDERRUN]; |
| 574 | } else { |
| 575 | usb_settoggle(udev, ep->epnum, ep->nextpid == USB_PID_OUT, |
| 576 | PTD_GET_TOGGLE(ptd)); |
| 577 | urbstat = cc_to_error[PTD_DATAUNDERRUN]; |
| 578 | } |
| 579 | goto out; |
| 580 | } |
| 581 | } |
| 582 | |
| 583 | if (cc != PTD_CC_NOERROR) { |
| 584 | if (++ep->error_count >= 3 || cc == PTD_CC_STALL || cc == PTD_DATAOVERRUN) { |
| 585 | urbstat = cc_to_error[cc]; |
| 586 | DBG(1, "%s: req %d nextpid %02x, status %d, error %d, error_count %d\n", |
| 587 | __func__, ep->num_req, ep->nextpid, urbstat, cc, |
| 588 | ep->error_count); |
| 589 | } |
| 590 | goto out; |
| 591 | } |
| 592 | |
| 593 | switch (ep->nextpid) { |
| 594 | case USB_PID_OUT: |
| 595 | if (PTD_GET_COUNT(ptd) != ep->length) |
| 596 | pr_err("%s: count=%d len=%d\n", __func__, |
| 597 | PTD_GET_COUNT(ptd), ep->length); |
| 598 | BUG_ON(PTD_GET_COUNT(ptd) != ep->length); |
| 599 | urb->actual_length += ep->length; |
| 600 | BUG_ON(urb->actual_length > urb->transfer_buffer_length); |
| 601 | usb_settoggle(udev, ep->epnum, 1, PTD_GET_TOGGLE(ptd)); |
| 602 | if (urb->actual_length == urb->transfer_buffer_length) { |
| 603 | DBG(3, "%s: req %d xfer complete %d/%d status %d -> 0\n", __func__, |
| 604 | ep->num_req, len, ep->maxpacket, urbstat); |
| 605 | if (usb_pipecontrol(urb->pipe)) { |
| 606 | DBG(3, "%s: req %d %s Wait for ACK\n", __func__, |
| 607 | ep->num_req, |
| 608 | usb_pipein(urb->pipe) ? "IN" : "OUT"); |
| 609 | ep->nextpid = USB_PID_ACK; |
| 610 | } else { |
| 611 | if (len % ep->maxpacket || |
| 612 | !(urb->transfer_flags & URB_ZERO_PACKET)) { |
| 613 | urbstat = 0; |
| 614 | DBG(3, "%s: req %d URB %s status %d count %d/%d/%d\n", |
| 615 | __func__, ep->num_req, usb_pipein(urb->pipe) ? "IN" : "OUT", |
| 616 | urbstat, len, ep->maxpacket, urb->actual_length); |
| 617 | } |
| 618 | } |
| 619 | } |
| 620 | break; |
| 621 | case USB_PID_IN: |
| 622 | len = PTD_GET_COUNT(ptd); |
| 623 | BUG_ON(len > ep->length); |
| 624 | urb->actual_length += len; |
| 625 | BUG_ON(urb->actual_length > urb->transfer_buffer_length); |
| 626 | usb_settoggle(udev, ep->epnum, 0, PTD_GET_TOGGLE(ptd)); |
| 627 | /* if transfer completed or (allowed) data underrun */ |
| 628 | if ((urb->transfer_buffer_length == urb->actual_length) || |
| 629 | len % ep->maxpacket) { |
| 630 | DBG(3, "%s: req %d xfer complete %d/%d status %d -> 0\n", __func__, |
| 631 | ep->num_req, len, ep->maxpacket, urbstat); |
| 632 | if (usb_pipecontrol(urb->pipe)) { |
| 633 | DBG(3, "%s: req %d %s Wait for ACK\n", __func__, |
| 634 | ep->num_req, |
| 635 | usb_pipein(urb->pipe) ? "IN" : "OUT"); |
| 636 | ep->nextpid = USB_PID_ACK; |
| 637 | } else { |
| 638 | urbstat = 0; |
| 639 | DBG(3, "%s: req %d URB %s status %d count %d/%d/%d\n", |
| 640 | __func__, ep->num_req, usb_pipein(urb->pipe) ? "IN" : "OUT", |
| 641 | urbstat, len, ep->maxpacket, urb->actual_length); |
| 642 | } |
| 643 | } |
| 644 | break; |
| 645 | case USB_PID_SETUP: |
| 646 | if (urb->transfer_buffer_length == urb->actual_length) { |
| 647 | ep->nextpid = USB_PID_ACK; |
| 648 | } else if (usb_pipeout(urb->pipe)) { |
| 649 | usb_settoggle(udev, 0, 1, 1); |
| 650 | ep->nextpid = USB_PID_OUT; |
| 651 | } else { |
| 652 | usb_settoggle(udev, 0, 0, 1); |
| 653 | ep->nextpid = USB_PID_IN; |
| 654 | } |
| 655 | break; |
| 656 | case USB_PID_ACK: |
| 657 | DBG(3, "%s: req %d got ACK %d -> 0\n", __func__, ep->num_req, |
| 658 | urbstat); |
| 659 | WARN_ON(urbstat != -EINPROGRESS); |
| 660 | urbstat = 0; |
| 661 | ep->nextpid = 0; |
| 662 | break; |
| 663 | default: |
| 664 | BUG_ON(1); |
| 665 | } |
| 666 | |
| 667 | out: |
| 668 | if (urbstat != -EINPROGRESS) { |
| 669 | DBG(2, "%s: Finishing ep %p req %d urb %p status %d\n", __func__, |
| 670 | ep, ep->num_req, urb, urbstat); |
| 671 | finish_request(isp1362_hcd, ep, urb, urbstat); |
| 672 | } |
| 673 | } |
| 674 | |
| 675 | static void finish_unlinks(struct isp1362_hcd *isp1362_hcd) |
| 676 | { |
| 677 | struct isp1362_ep *ep; |
| 678 | struct isp1362_ep *tmp; |
| 679 | |
| 680 | list_for_each_entry_safe(ep, tmp, &isp1362_hcd->remove_list, remove_list) { |
| 681 | struct isp1362_ep_queue *epq = |
| 682 | get_ptd_queue(isp1362_hcd, ep->ptd_offset); |
| 683 | int index = ep->ptd_index; |
| 684 | |
| 685 | BUG_ON(epq == NULL); |
| 686 | if (index >= 0) { |
| 687 | DBG(1, "%s: remove PTD[%d] $%04x\n", __func__, index, ep->ptd_offset); |
| 688 | BUG_ON(ep->num_ptds == 0); |
| 689 | release_ptd_buffers(epq, ep); |
| 690 | } |
| 691 | if (!list_empty(&ep->hep->urb_list)) { |
| 692 | struct urb *urb = get_urb(ep); |
| 693 | |
| 694 | DBG(1, "%s: Finishing req %d ep %p from remove_list\n", __func__, |
| 695 | ep->num_req, ep); |
| 696 | finish_request(isp1362_hcd, ep, urb, -ESHUTDOWN); |
| 697 | } |
| 698 | WARN_ON(list_empty(&ep->active)); |
| 699 | if (!list_empty(&ep->active)) { |
| 700 | list_del_init(&ep->active); |
| 701 | DBG(1, "%s: ep %p removed from active list\n", __func__, ep); |
| 702 | } |
| 703 | list_del_init(&ep->remove_list); |
| 704 | DBG(1, "%s: ep %p removed from remove_list\n", __func__, ep); |
| 705 | } |
| 706 | DBG(1, "%s: Done\n", __func__); |
| 707 | } |
| 708 | |
| 709 | static inline void enable_atl_transfers(struct isp1362_hcd *isp1362_hcd, int count) |
| 710 | { |
| 711 | if (count > 0) { |
| 712 | if (count < isp1362_hcd->atl_queue.ptd_count) |
| 713 | isp1362_write_reg16(isp1362_hcd, HCATLDTC, count); |
| 714 | isp1362_enable_int(isp1362_hcd, HCuPINT_ATL); |
| 715 | isp1362_write_reg32(isp1362_hcd, HCATLSKIP, isp1362_hcd->atl_queue.skip_map); |
| 716 | isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); |
| 717 | } else |
| 718 | isp1362_enable_int(isp1362_hcd, HCuPINT_SOF); |
| 719 | } |
| 720 | |
| 721 | static inline void enable_intl_transfers(struct isp1362_hcd *isp1362_hcd) |
| 722 | { |
| 723 | isp1362_enable_int(isp1362_hcd, HCuPINT_INTL); |
| 724 | isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); |
| 725 | isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, isp1362_hcd->intl_queue.skip_map); |
| 726 | } |
| 727 | |
| 728 | static inline void enable_istl_transfers(struct isp1362_hcd *isp1362_hcd, int flip) |
| 729 | { |
| 730 | isp1362_enable_int(isp1362_hcd, flip ? HCuPINT_ISTL1 : HCuPINT_ISTL0); |
| 731 | isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, flip ? |
| 732 | HCBUFSTAT_ISTL1_FULL : HCBUFSTAT_ISTL0_FULL); |
| 733 | } |
| 734 | |
| 735 | static int submit_req(struct isp1362_hcd *isp1362_hcd, struct urb *urb, |
| 736 | struct isp1362_ep *ep, struct isp1362_ep_queue *epq) |
| 737 | { |
| 738 | int index = epq->free_ptd; |
| 739 | |
| 740 | prepare_ptd(isp1362_hcd, urb, ep, epq, 0); |
| 741 | index = claim_ptd_buffers(epq, ep, ep->length); |
| 742 | if (index == -ENOMEM) { |
| 743 | DBG(1, "%s: req %d No free %s PTD available: %d, %08lx:%08lx\n", __func__, |
| 744 | ep->num_req, epq->name, ep->num_ptds, epq->buf_map, epq->skip_map); |
| 745 | return index; |
| 746 | } else if (index == -EOVERFLOW) { |
| 747 | DBG(1, "%s: req %d Not enough space for %d byte %s PTD %d %08lx:%08lx\n", |
| 748 | __func__, ep->num_req, ep->length, epq->name, ep->num_ptds, |
| 749 | epq->buf_map, epq->skip_map); |
| 750 | return index; |
| 751 | } else |
| 752 | BUG_ON(index < 0); |
| 753 | list_add_tail(&ep->active, &epq->active); |
| 754 | DBG(1, "%s: ep %p req %d len %d added to active list %p\n", __func__, |
| 755 | ep, ep->num_req, ep->length, &epq->active); |
| 756 | DBG(1, "%s: Submitting %s PTD $%04x for ep %p req %d\n", __func__, epq->name, |
| 757 | ep->ptd_offset, ep, ep->num_req); |
| 758 | isp1362_write_ptd(isp1362_hcd, ep, epq); |
| 759 | __clear_bit(ep->ptd_index, &epq->skip_map); |
| 760 | |
| 761 | return 0; |
| 762 | } |
| 763 | |
| 764 | static void start_atl_transfers(struct isp1362_hcd *isp1362_hcd) |
| 765 | { |
| 766 | int ptd_count = 0; |
| 767 | struct isp1362_ep_queue *epq = &isp1362_hcd->atl_queue; |
| 768 | struct isp1362_ep *ep; |
| 769 | int defer = 0; |
| 770 | |
| 771 | if (atomic_read(&epq->finishing)) { |
| 772 | DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); |
| 773 | return; |
| 774 | } |
| 775 | |
| 776 | list_for_each_entry(ep, &isp1362_hcd->async, schedule) { |
| 777 | struct urb *urb = get_urb(ep); |
| 778 | int ret; |
| 779 | |
| 780 | if (!list_empty(&ep->active)) { |
| 781 | DBG(2, "%s: Skipping active %s ep %p\n", __func__, epq->name, ep); |
| 782 | continue; |
| 783 | } |
| 784 | |
| 785 | DBG(1, "%s: Processing %s ep %p req %d\n", __func__, epq->name, |
| 786 | ep, ep->num_req); |
| 787 | |
| 788 | ret = submit_req(isp1362_hcd, urb, ep, epq); |
| 789 | if (ret == -ENOMEM) { |
| 790 | defer = 1; |
| 791 | break; |
| 792 | } else if (ret == -EOVERFLOW) { |
| 793 | defer = 1; |
| 794 | continue; |
| 795 | } |
| 796 | #ifdef BUGGY_PXA2XX_UDC_USBTEST |
| 797 | defer = ep->nextpid == USB_PID_SETUP; |
| 798 | #endif |
| 799 | ptd_count++; |
| 800 | } |
| 801 | |
| 802 | /* Avoid starving of endpoints */ |
| 803 | if (isp1362_hcd->async.next != isp1362_hcd->async.prev) { |
| 804 | DBG(2, "%s: Cycling ASYNC schedule %d\n", __func__, ptd_count); |
| 805 | list_move(&isp1362_hcd->async, isp1362_hcd->async.next); |
| 806 | } |
| 807 | if (ptd_count || defer) |
| 808 | enable_atl_transfers(isp1362_hcd, defer ? 0 : ptd_count); |
| 809 | |
| 810 | epq->ptd_count += ptd_count; |
| 811 | if (epq->ptd_count > epq->stat_maxptds) { |
| 812 | epq->stat_maxptds = epq->ptd_count; |
| 813 | DBG(0, "%s: max_ptds: %d\n", __func__, epq->stat_maxptds); |
| 814 | } |
| 815 | } |
| 816 | |
| 817 | static void start_intl_transfers(struct isp1362_hcd *isp1362_hcd) |
| 818 | { |
| 819 | int ptd_count = 0; |
| 820 | struct isp1362_ep_queue *epq = &isp1362_hcd->intl_queue; |
| 821 | struct isp1362_ep *ep; |
| 822 | |
| 823 | if (atomic_read(&epq->finishing)) { |
| 824 | DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); |
| 825 | return; |
| 826 | } |
| 827 | |
| 828 | list_for_each_entry(ep, &isp1362_hcd->periodic, schedule) { |
| 829 | struct urb *urb = get_urb(ep); |
| 830 | int ret; |
| 831 | |
| 832 | if (!list_empty(&ep->active)) { |
| 833 | DBG(1, "%s: Skipping active %s ep %p\n", __func__, |
| 834 | epq->name, ep); |
| 835 | continue; |
| 836 | } |
| 837 | |
| 838 | DBG(1, "%s: Processing %s ep %p req %d\n", __func__, |
| 839 | epq->name, ep, ep->num_req); |
| 840 | ret = submit_req(isp1362_hcd, urb, ep, epq); |
| 841 | if (ret == -ENOMEM) |
| 842 | break; |
| 843 | else if (ret == -EOVERFLOW) |
| 844 | continue; |
| 845 | ptd_count++; |
| 846 | } |
| 847 | |
| 848 | if (ptd_count) { |
| 849 | static int last_count; |
| 850 | |
| 851 | if (ptd_count != last_count) { |
| 852 | DBG(0, "%s: ptd_count: %d\n", __func__, ptd_count); |
| 853 | last_count = ptd_count; |
| 854 | } |
| 855 | enable_intl_transfers(isp1362_hcd); |
| 856 | } |
| 857 | |
| 858 | epq->ptd_count += ptd_count; |
| 859 | if (epq->ptd_count > epq->stat_maxptds) |
| 860 | epq->stat_maxptds = epq->ptd_count; |
| 861 | } |
| 862 | |
| 863 | static inline int next_ptd(struct isp1362_ep_queue *epq, struct isp1362_ep *ep) |
| 864 | { |
| 865 | u16 ptd_offset = ep->ptd_offset; |
| 866 | int num_ptds = (ep->length + PTD_HEADER_SIZE + (epq->blk_size - 1)) / epq->blk_size; |
| 867 | |
| 868 | DBG(2, "%s: PTD offset $%04x + %04x => %d * %04x -> $%04x\n", __func__, ptd_offset, |
| 869 | ep->length, num_ptds, epq->blk_size, ptd_offset + num_ptds * epq->blk_size); |
| 870 | |
| 871 | ptd_offset += num_ptds * epq->blk_size; |
| 872 | if (ptd_offset < epq->buf_start + epq->buf_size) |
| 873 | return ptd_offset; |
| 874 | else |
| 875 | return -ENOMEM; |
| 876 | } |
| 877 | |
| 878 | static void start_iso_transfers(struct isp1362_hcd *isp1362_hcd) |
| 879 | { |
| 880 | int ptd_count = 0; |
| 881 | int flip = isp1362_hcd->istl_flip; |
| 882 | struct isp1362_ep_queue *epq; |
| 883 | int ptd_offset; |
| 884 | struct isp1362_ep *ep; |
| 885 | struct isp1362_ep *tmp; |
| 886 | u16 fno = isp1362_read_reg32(isp1362_hcd, HCFMNUM); |
| 887 | |
| 888 | fill2: |
| 889 | epq = &isp1362_hcd->istl_queue[flip]; |
| 890 | if (atomic_read(&epq->finishing)) { |
| 891 | DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); |
| 892 | return; |
| 893 | } |
| 894 | |
| 895 | if (!list_empty(&epq->active)) |
| 896 | return; |
| 897 | |
| 898 | ptd_offset = epq->buf_start; |
| 899 | list_for_each_entry_safe(ep, tmp, &isp1362_hcd->isoc, schedule) { |
| 900 | struct urb *urb = get_urb(ep); |
| 901 | s16 diff = fno - (u16)urb->start_frame; |
| 902 | |
| 903 | DBG(1, "%s: Processing %s ep %p\n", __func__, epq->name, ep); |
| 904 | |
| 905 | if (diff > urb->number_of_packets) { |
| 906 | /* time frame for this URB has elapsed */ |
| 907 | finish_request(isp1362_hcd, ep, urb, -EOVERFLOW); |
| 908 | continue; |
| 909 | } else if (diff < -1) { |
| 910 | /* URB is not due in this frame or the next one. |
| 911 | * Comparing with '-1' instead of '0' accounts for double |
| 912 | * buffering in the ISP1362 which enables us to queue the PTD |
| 913 | * one frame ahead of time |
| 914 | */ |
| 915 | } else if (diff == -1) { |
| 916 | /* submit PTD's that are due in the next frame */ |
| 917 | prepare_ptd(isp1362_hcd, urb, ep, epq, fno); |
| 918 | if (ptd_offset + PTD_HEADER_SIZE + ep->length > |
| 919 | epq->buf_start + epq->buf_size) { |
| 920 | pr_err("%s: Not enough ISO buffer space for %d byte PTD\n", |
| 921 | __func__, ep->length); |
| 922 | continue; |
| 923 | } |
| 924 | ep->ptd_offset = ptd_offset; |
| 925 | list_add_tail(&ep->active, &epq->active); |
| 926 | |
| 927 | ptd_offset = next_ptd(epq, ep); |
| 928 | if (ptd_offset < 0) { |
| 929 | pr_warning("%s: req %d No more %s PTD buffers available\n", __func__, |
| 930 | ep->num_req, epq->name); |
| 931 | break; |
| 932 | } |
| 933 | } |
| 934 | } |
| 935 | list_for_each_entry(ep, &epq->active, active) { |
| 936 | if (epq->active.next == &ep->active) |
| 937 | ep->ptd.mps |= PTD_LAST_MSK; |
| 938 | isp1362_write_ptd(isp1362_hcd, ep, epq); |
| 939 | ptd_count++; |
| 940 | } |
| 941 | |
| 942 | if (ptd_count) |
| 943 | enable_istl_transfers(isp1362_hcd, flip); |
| 944 | |
| 945 | epq->ptd_count += ptd_count; |
| 946 | if (epq->ptd_count > epq->stat_maxptds) |
| 947 | epq->stat_maxptds = epq->ptd_count; |
| 948 | |
| 949 | /* check, whether the second ISTL buffer may also be filled */ |
| 950 | if (!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & |
| 951 | (flip ? HCBUFSTAT_ISTL0_FULL : HCBUFSTAT_ISTL1_FULL))) { |
| 952 | fno++; |
| 953 | ptd_count = 0; |
| 954 | flip = 1 - flip; |
| 955 | goto fill2; |
| 956 | } |
| 957 | } |
| 958 | |
| 959 | static void finish_transfers(struct isp1362_hcd *isp1362_hcd, unsigned long done_map, |
| 960 | struct isp1362_ep_queue *epq) |
| 961 | { |
| 962 | struct isp1362_ep *ep; |
| 963 | struct isp1362_ep *tmp; |
| 964 | |
| 965 | if (list_empty(&epq->active)) { |
| 966 | DBG(1, "%s: Nothing to do for %s queue\n", __func__, epq->name); |
| 967 | return; |
| 968 | } |
| 969 | |
| 970 | DBG(1, "%s: Finishing %s transfers %08lx\n", __func__, epq->name, done_map); |
| 971 | |
| 972 | atomic_inc(&epq->finishing); |
| 973 | list_for_each_entry_safe(ep, tmp, &epq->active, active) { |
| 974 | int index = ep->ptd_index; |
| 975 | |
| 976 | DBG(1, "%s: Checking %s PTD[%02x] $%04x\n", __func__, epq->name, |
| 977 | index, ep->ptd_offset); |
| 978 | |
| 979 | BUG_ON(index < 0); |
| 980 | if (__test_and_clear_bit(index, &done_map)) { |
| 981 | isp1362_read_ptd(isp1362_hcd, ep, epq); |
| 982 | epq->free_ptd = index; |
| 983 | BUG_ON(ep->num_ptds == 0); |
| 984 | release_ptd_buffers(epq, ep); |
| 985 | |
| 986 | DBG(1, "%s: ep %p req %d removed from active list\n", __func__, |
| 987 | ep, ep->num_req); |
| 988 | if (!list_empty(&ep->remove_list)) { |
| 989 | list_del_init(&ep->remove_list); |
| 990 | DBG(1, "%s: ep %p removed from remove list\n", __func__, ep); |
| 991 | } |
| 992 | DBG(1, "%s: Postprocessing %s ep %p req %d\n", __func__, epq->name, |
| 993 | ep, ep->num_req); |
| 994 | postproc_ep(isp1362_hcd, ep); |
| 995 | } |
| 996 | if (!done_map) |
| 997 | break; |
| 998 | } |
| 999 | if (done_map) |
| 1000 | pr_warning("%s: done_map not clear: %08lx:%08lx\n", __func__, done_map, |
| 1001 | epq->skip_map); |
| 1002 | atomic_dec(&epq->finishing); |
| 1003 | } |
| 1004 | |
| 1005 | static void finish_iso_transfers(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep_queue *epq) |
| 1006 | { |
| 1007 | struct isp1362_ep *ep; |
| 1008 | struct isp1362_ep *tmp; |
| 1009 | |
| 1010 | if (list_empty(&epq->active)) { |
| 1011 | DBG(1, "%s: Nothing to do for %s queue\n", __func__, epq->name); |
| 1012 | return; |
| 1013 | } |
| 1014 | |
| 1015 | DBG(1, "%s: Finishing %s transfers\n", __func__, epq->name); |
| 1016 | |
| 1017 | atomic_inc(&epq->finishing); |
| 1018 | list_for_each_entry_safe(ep, tmp, &epq->active, active) { |
| 1019 | DBG(1, "%s: Checking PTD $%04x\n", __func__, ep->ptd_offset); |
| 1020 | |
| 1021 | isp1362_read_ptd(isp1362_hcd, ep, epq); |
| 1022 | DBG(1, "%s: Postprocessing %s ep %p\n", __func__, epq->name, ep); |
| 1023 | postproc_ep(isp1362_hcd, ep); |
| 1024 | } |
| 1025 | WARN_ON(epq->blk_size != 0); |
| 1026 | atomic_dec(&epq->finishing); |
| 1027 | } |
| 1028 | |
| 1029 | static irqreturn_t isp1362_irq(struct usb_hcd *hcd) |
| 1030 | { |
| 1031 | int handled = 0; |
| 1032 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 1033 | u16 irqstat; |
| 1034 | u16 svc_mask; |
| 1035 | |
| 1036 | spin_lock(&isp1362_hcd->lock); |
| 1037 | |
| 1038 | BUG_ON(isp1362_hcd->irq_active++); |
| 1039 | |
| 1040 | isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); |
| 1041 | |
| 1042 | irqstat = isp1362_read_reg16(isp1362_hcd, HCuPINT); |
| 1043 | DBG(3, "%s: got IRQ %04x:%04x\n", __func__, irqstat, isp1362_hcd->irqenb); |
| 1044 | |
| 1045 | /* only handle interrupts that are currently enabled */ |
| 1046 | irqstat &= isp1362_hcd->irqenb; |
| 1047 | isp1362_write_reg16(isp1362_hcd, HCuPINT, irqstat); |
| 1048 | svc_mask = irqstat; |
| 1049 | |
| 1050 | if (irqstat & HCuPINT_SOF) { |
| 1051 | isp1362_hcd->irqenb &= ~HCuPINT_SOF; |
| 1052 | isp1362_hcd->irq_stat[ISP1362_INT_SOF]++; |
| 1053 | handled = 1; |
| 1054 | svc_mask &= ~HCuPINT_SOF; |
| 1055 | DBG(3, "%s: SOF\n", __func__); |
| 1056 | isp1362_hcd->fmindex = isp1362_read_reg32(isp1362_hcd, HCFMNUM); |
| 1057 | if (!list_empty(&isp1362_hcd->remove_list)) |
| 1058 | finish_unlinks(isp1362_hcd); |
| 1059 | if (!list_empty(&isp1362_hcd->async) && !(irqstat & HCuPINT_ATL)) { |
| 1060 | if (list_empty(&isp1362_hcd->atl_queue.active)) { |
| 1061 | start_atl_transfers(isp1362_hcd); |
| 1062 | } else { |
| 1063 | isp1362_enable_int(isp1362_hcd, HCuPINT_ATL); |
| 1064 | isp1362_write_reg32(isp1362_hcd, HCATLSKIP, |
| 1065 | isp1362_hcd->atl_queue.skip_map); |
| 1066 | isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); |
| 1067 | } |
| 1068 | } |
| 1069 | } |
| 1070 | |
| 1071 | if (irqstat & HCuPINT_ISTL0) { |
| 1072 | isp1362_hcd->irq_stat[ISP1362_INT_ISTL0]++; |
| 1073 | handled = 1; |
| 1074 | svc_mask &= ~HCuPINT_ISTL0; |
| 1075 | isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ISTL0_FULL); |
| 1076 | DBG(1, "%s: ISTL0\n", __func__); |
| 1077 | WARN_ON((int)!!isp1362_hcd->istl_flip); |
Julia Lawall | 3d2b081 | 2009-08-12 16:51:09 +0200 | [diff] [blame] | 1078 | WARN_ON(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & |
| 1079 | HCBUFSTAT_ISTL0_ACTIVE); |
| 1080 | WARN_ON(!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & |
| 1081 | HCBUFSTAT_ISTL0_DONE)); |
Lothar Wassmann | a9d4309 | 2009-07-16 20:51:21 -0400 | [diff] [blame] | 1082 | isp1362_hcd->irqenb &= ~HCuPINT_ISTL0; |
| 1083 | } |
| 1084 | |
| 1085 | if (irqstat & HCuPINT_ISTL1) { |
| 1086 | isp1362_hcd->irq_stat[ISP1362_INT_ISTL1]++; |
| 1087 | handled = 1; |
| 1088 | svc_mask &= ~HCuPINT_ISTL1; |
| 1089 | isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ISTL1_FULL); |
| 1090 | DBG(1, "%s: ISTL1\n", __func__); |
| 1091 | WARN_ON(!(int)isp1362_hcd->istl_flip); |
Julia Lawall | 3d2b081 | 2009-08-12 16:51:09 +0200 | [diff] [blame] | 1092 | WARN_ON(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & |
| 1093 | HCBUFSTAT_ISTL1_ACTIVE); |
| 1094 | WARN_ON(!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & |
| 1095 | HCBUFSTAT_ISTL1_DONE)); |
Lothar Wassmann | a9d4309 | 2009-07-16 20:51:21 -0400 | [diff] [blame] | 1096 | isp1362_hcd->irqenb &= ~HCuPINT_ISTL1; |
| 1097 | } |
| 1098 | |
| 1099 | if (irqstat & (HCuPINT_ISTL0 | HCuPINT_ISTL1)) { |
| 1100 | WARN_ON((irqstat & (HCuPINT_ISTL0 | HCuPINT_ISTL1)) == |
| 1101 | (HCuPINT_ISTL0 | HCuPINT_ISTL1)); |
| 1102 | finish_iso_transfers(isp1362_hcd, |
| 1103 | &isp1362_hcd->istl_queue[isp1362_hcd->istl_flip]); |
| 1104 | start_iso_transfers(isp1362_hcd); |
| 1105 | isp1362_hcd->istl_flip = 1 - isp1362_hcd->istl_flip; |
| 1106 | } |
| 1107 | |
| 1108 | if (irqstat & HCuPINT_INTL) { |
| 1109 | u32 done_map = isp1362_read_reg32(isp1362_hcd, HCINTLDONE); |
| 1110 | u32 skip_map = isp1362_read_reg32(isp1362_hcd, HCINTLSKIP); |
| 1111 | isp1362_hcd->irq_stat[ISP1362_INT_INTL]++; |
| 1112 | |
| 1113 | DBG(2, "%s: INTL\n", __func__); |
| 1114 | |
| 1115 | svc_mask &= ~HCuPINT_INTL; |
| 1116 | |
| 1117 | isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, skip_map | done_map); |
| 1118 | if (~(done_map | skip_map) == 0) |
| 1119 | /* All PTDs are finished, disable INTL processing entirely */ |
| 1120 | isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); |
| 1121 | |
| 1122 | handled = 1; |
| 1123 | WARN_ON(!done_map); |
| 1124 | if (done_map) { |
| 1125 | DBG(3, "%s: INTL done_map %08x\n", __func__, done_map); |
| 1126 | finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->intl_queue); |
| 1127 | start_intl_transfers(isp1362_hcd); |
| 1128 | } |
| 1129 | } |
| 1130 | |
| 1131 | if (irqstat & HCuPINT_ATL) { |
| 1132 | u32 done_map = isp1362_read_reg32(isp1362_hcd, HCATLDONE); |
| 1133 | u32 skip_map = isp1362_read_reg32(isp1362_hcd, HCATLSKIP); |
| 1134 | isp1362_hcd->irq_stat[ISP1362_INT_ATL]++; |
| 1135 | |
| 1136 | DBG(2, "%s: ATL\n", __func__); |
| 1137 | |
| 1138 | svc_mask &= ~HCuPINT_ATL; |
| 1139 | |
| 1140 | isp1362_write_reg32(isp1362_hcd, HCATLSKIP, skip_map | done_map); |
| 1141 | if (~(done_map | skip_map) == 0) |
| 1142 | isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); |
| 1143 | if (done_map) { |
| 1144 | DBG(3, "%s: ATL done_map %08x\n", __func__, done_map); |
| 1145 | finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->atl_queue); |
| 1146 | start_atl_transfers(isp1362_hcd); |
| 1147 | } |
| 1148 | handled = 1; |
| 1149 | } |
| 1150 | |
| 1151 | if (irqstat & HCuPINT_OPR) { |
| 1152 | u32 intstat = isp1362_read_reg32(isp1362_hcd, HCINTSTAT); |
| 1153 | isp1362_hcd->irq_stat[ISP1362_INT_OPR]++; |
| 1154 | |
| 1155 | svc_mask &= ~HCuPINT_OPR; |
| 1156 | DBG(2, "%s: OPR %08x:%08x\n", __func__, intstat, isp1362_hcd->intenb); |
| 1157 | intstat &= isp1362_hcd->intenb; |
| 1158 | if (intstat & OHCI_INTR_UE) { |
| 1159 | pr_err("Unrecoverable error\n"); |
| 1160 | /* FIXME: do here reset or cleanup or whatever */ |
| 1161 | } |
| 1162 | if (intstat & OHCI_INTR_RHSC) { |
| 1163 | isp1362_hcd->rhstatus = isp1362_read_reg32(isp1362_hcd, HCRHSTATUS); |
| 1164 | isp1362_hcd->rhport[0] = isp1362_read_reg32(isp1362_hcd, HCRHPORT1); |
| 1165 | isp1362_hcd->rhport[1] = isp1362_read_reg32(isp1362_hcd, HCRHPORT2); |
| 1166 | } |
| 1167 | if (intstat & OHCI_INTR_RD) { |
| 1168 | pr_info("%s: RESUME DETECTED\n", __func__); |
| 1169 | isp1362_show_reg(isp1362_hcd, HCCONTROL); |
| 1170 | usb_hcd_resume_root_hub(hcd); |
| 1171 | } |
| 1172 | isp1362_write_reg32(isp1362_hcd, HCINTSTAT, intstat); |
| 1173 | irqstat &= ~HCuPINT_OPR; |
| 1174 | handled = 1; |
| 1175 | } |
| 1176 | |
| 1177 | if (irqstat & HCuPINT_SUSP) { |
| 1178 | isp1362_hcd->irq_stat[ISP1362_INT_SUSP]++; |
| 1179 | handled = 1; |
| 1180 | svc_mask &= ~HCuPINT_SUSP; |
| 1181 | |
| 1182 | pr_info("%s: SUSPEND IRQ\n", __func__); |
| 1183 | } |
| 1184 | |
| 1185 | if (irqstat & HCuPINT_CLKRDY) { |
| 1186 | isp1362_hcd->irq_stat[ISP1362_INT_CLKRDY]++; |
| 1187 | handled = 1; |
| 1188 | isp1362_hcd->irqenb &= ~HCuPINT_CLKRDY; |
| 1189 | svc_mask &= ~HCuPINT_CLKRDY; |
| 1190 | pr_info("%s: CLKRDY IRQ\n", __func__); |
| 1191 | } |
| 1192 | |
| 1193 | if (svc_mask) |
| 1194 | pr_err("%s: Unserviced interrupt(s) %04x\n", __func__, svc_mask); |
| 1195 | |
| 1196 | isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); |
| 1197 | isp1362_hcd->irq_active--; |
| 1198 | spin_unlock(&isp1362_hcd->lock); |
| 1199 | |
| 1200 | return IRQ_RETVAL(handled); |
| 1201 | } |
| 1202 | |
| 1203 | /*-------------------------------------------------------------------------*/ |
| 1204 | |
| 1205 | #define MAX_PERIODIC_LOAD 900 /* out of 1000 usec */ |
| 1206 | static int balance(struct isp1362_hcd *isp1362_hcd, u16 interval, u16 load) |
| 1207 | { |
| 1208 | int i, branch = -ENOSPC; |
| 1209 | |
| 1210 | /* search for the least loaded schedule branch of that interval |
| 1211 | * which has enough bandwidth left unreserved. |
| 1212 | */ |
| 1213 | for (i = 0; i < interval; i++) { |
| 1214 | if (branch < 0 || isp1362_hcd->load[branch] > isp1362_hcd->load[i]) { |
| 1215 | int j; |
| 1216 | |
| 1217 | for (j = i; j < PERIODIC_SIZE; j += interval) { |
| 1218 | if ((isp1362_hcd->load[j] + load) > MAX_PERIODIC_LOAD) { |
| 1219 | pr_err("%s: new load %d load[%02x] %d max %d\n", __func__, |
| 1220 | load, j, isp1362_hcd->load[j], MAX_PERIODIC_LOAD); |
| 1221 | break; |
| 1222 | } |
| 1223 | } |
| 1224 | if (j < PERIODIC_SIZE) |
| 1225 | continue; |
| 1226 | branch = i; |
| 1227 | } |
| 1228 | } |
| 1229 | return branch; |
| 1230 | } |
| 1231 | |
| 1232 | /* NB! ALL the code above this point runs with isp1362_hcd->lock |
| 1233 | held, irqs off |
| 1234 | */ |
| 1235 | |
| 1236 | /*-------------------------------------------------------------------------*/ |
| 1237 | |
| 1238 | static int isp1362_urb_enqueue(struct usb_hcd *hcd, |
| 1239 | struct urb *urb, |
| 1240 | gfp_t mem_flags) |
| 1241 | { |
| 1242 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 1243 | struct usb_device *udev = urb->dev; |
| 1244 | unsigned int pipe = urb->pipe; |
| 1245 | int is_out = !usb_pipein(pipe); |
| 1246 | int type = usb_pipetype(pipe); |
| 1247 | int epnum = usb_pipeendpoint(pipe); |
| 1248 | struct usb_host_endpoint *hep = urb->ep; |
| 1249 | struct isp1362_ep *ep = NULL; |
| 1250 | unsigned long flags; |
| 1251 | int retval = 0; |
| 1252 | |
| 1253 | DBG(3, "%s: urb %p\n", __func__, urb); |
| 1254 | |
| 1255 | if (type == PIPE_ISOCHRONOUS) { |
| 1256 | pr_err("Isochronous transfers not supported\n"); |
| 1257 | return -ENOSPC; |
| 1258 | } |
| 1259 | |
| 1260 | URB_DBG("%s: FA %d ep%d%s %s: len %d %s%s\n", __func__, |
| 1261 | usb_pipedevice(pipe), epnum, |
| 1262 | is_out ? "out" : "in", |
| 1263 | usb_pipecontrol(pipe) ? "ctrl" : |
| 1264 | usb_pipeint(pipe) ? "int" : |
| 1265 | usb_pipebulk(pipe) ? "bulk" : |
| 1266 | "iso", |
| 1267 | urb->transfer_buffer_length, |
| 1268 | (urb->transfer_flags & URB_ZERO_PACKET) ? "ZERO_PACKET " : "", |
| 1269 | !(urb->transfer_flags & URB_SHORT_NOT_OK) ? |
| 1270 | "short_ok" : ""); |
| 1271 | |
| 1272 | /* avoid all allocations within spinlocks: request or endpoint */ |
| 1273 | if (!hep->hcpriv) { |
| 1274 | ep = kcalloc(1, sizeof *ep, mem_flags); |
| 1275 | if (!ep) |
| 1276 | return -ENOMEM; |
| 1277 | } |
| 1278 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 1279 | |
| 1280 | /* don't submit to a dead or disabled port */ |
| 1281 | if (!((isp1362_hcd->rhport[0] | isp1362_hcd->rhport[1]) & |
| 1282 | (1 << USB_PORT_FEAT_ENABLE)) || |
| 1283 | !HC_IS_RUNNING(hcd->state)) { |
| 1284 | kfree(ep); |
| 1285 | retval = -ENODEV; |
| 1286 | goto fail_not_linked; |
| 1287 | } |
| 1288 | |
| 1289 | retval = usb_hcd_link_urb_to_ep(hcd, urb); |
| 1290 | if (retval) { |
| 1291 | kfree(ep); |
| 1292 | goto fail_not_linked; |
| 1293 | } |
| 1294 | |
| 1295 | if (hep->hcpriv) { |
| 1296 | ep = hep->hcpriv; |
| 1297 | } else { |
| 1298 | INIT_LIST_HEAD(&ep->schedule); |
| 1299 | INIT_LIST_HEAD(&ep->active); |
| 1300 | INIT_LIST_HEAD(&ep->remove_list); |
| 1301 | ep->udev = usb_get_dev(udev); |
| 1302 | ep->hep = hep; |
| 1303 | ep->epnum = epnum; |
| 1304 | ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out); |
| 1305 | ep->ptd_offset = -EINVAL; |
| 1306 | ep->ptd_index = -EINVAL; |
| 1307 | usb_settoggle(udev, epnum, is_out, 0); |
| 1308 | |
| 1309 | if (type == PIPE_CONTROL) |
| 1310 | ep->nextpid = USB_PID_SETUP; |
| 1311 | else if (is_out) |
| 1312 | ep->nextpid = USB_PID_OUT; |
| 1313 | else |
| 1314 | ep->nextpid = USB_PID_IN; |
| 1315 | |
| 1316 | switch (type) { |
| 1317 | case PIPE_ISOCHRONOUS: |
| 1318 | case PIPE_INTERRUPT: |
| 1319 | if (urb->interval > PERIODIC_SIZE) |
| 1320 | urb->interval = PERIODIC_SIZE; |
| 1321 | ep->interval = urb->interval; |
| 1322 | ep->branch = PERIODIC_SIZE; |
| 1323 | ep->load = usb_calc_bus_time(udev->speed, !is_out, |
| 1324 | (type == PIPE_ISOCHRONOUS), |
| 1325 | usb_maxpacket(udev, pipe, is_out)) / 1000; |
| 1326 | break; |
| 1327 | } |
| 1328 | hep->hcpriv = ep; |
| 1329 | } |
| 1330 | ep->num_req = isp1362_hcd->req_serial++; |
| 1331 | |
| 1332 | /* maybe put endpoint into schedule */ |
| 1333 | switch (type) { |
| 1334 | case PIPE_CONTROL: |
| 1335 | case PIPE_BULK: |
| 1336 | if (list_empty(&ep->schedule)) { |
| 1337 | DBG(1, "%s: Adding ep %p req %d to async schedule\n", |
| 1338 | __func__, ep, ep->num_req); |
| 1339 | list_add_tail(&ep->schedule, &isp1362_hcd->async); |
| 1340 | } |
| 1341 | break; |
| 1342 | case PIPE_ISOCHRONOUS: |
| 1343 | case PIPE_INTERRUPT: |
| 1344 | urb->interval = ep->interval; |
| 1345 | |
| 1346 | /* urb submitted for already existing EP */ |
| 1347 | if (ep->branch < PERIODIC_SIZE) |
| 1348 | break; |
| 1349 | |
| 1350 | retval = balance(isp1362_hcd, ep->interval, ep->load); |
| 1351 | if (retval < 0) { |
| 1352 | pr_err("%s: balance returned %d\n", __func__, retval); |
| 1353 | goto fail; |
| 1354 | } |
| 1355 | ep->branch = retval; |
| 1356 | retval = 0; |
| 1357 | isp1362_hcd->fmindex = isp1362_read_reg32(isp1362_hcd, HCFMNUM); |
| 1358 | DBG(1, "%s: Current frame %04x branch %02x start_frame %04x(%04x)\n", |
| 1359 | __func__, isp1362_hcd->fmindex, ep->branch, |
| 1360 | ((isp1362_hcd->fmindex + PERIODIC_SIZE - 1) & |
| 1361 | ~(PERIODIC_SIZE - 1)) + ep->branch, |
| 1362 | (isp1362_hcd->fmindex & (PERIODIC_SIZE - 1)) + ep->branch); |
| 1363 | |
| 1364 | if (list_empty(&ep->schedule)) { |
| 1365 | if (type == PIPE_ISOCHRONOUS) { |
| 1366 | u16 frame = isp1362_hcd->fmindex; |
| 1367 | |
| 1368 | frame += max_t(u16, 8, ep->interval); |
| 1369 | frame &= ~(ep->interval - 1); |
| 1370 | frame |= ep->branch; |
| 1371 | if (frame_before(frame, isp1362_hcd->fmindex)) |
| 1372 | frame += ep->interval; |
| 1373 | urb->start_frame = frame; |
| 1374 | |
| 1375 | DBG(1, "%s: Adding ep %p to isoc schedule\n", __func__, ep); |
| 1376 | list_add_tail(&ep->schedule, &isp1362_hcd->isoc); |
| 1377 | } else { |
| 1378 | DBG(1, "%s: Adding ep %p to periodic schedule\n", __func__, ep); |
| 1379 | list_add_tail(&ep->schedule, &isp1362_hcd->periodic); |
| 1380 | } |
| 1381 | } else |
| 1382 | DBG(1, "%s: ep %p already scheduled\n", __func__, ep); |
| 1383 | |
| 1384 | DBG(2, "%s: load %d bandwidth %d -> %d\n", __func__, |
| 1385 | ep->load / ep->interval, isp1362_hcd->load[ep->branch], |
| 1386 | isp1362_hcd->load[ep->branch] + ep->load); |
| 1387 | isp1362_hcd->load[ep->branch] += ep->load; |
| 1388 | } |
| 1389 | |
| 1390 | urb->hcpriv = hep; |
| 1391 | ALIGNSTAT(isp1362_hcd, urb->transfer_buffer); |
| 1392 | |
| 1393 | switch (type) { |
| 1394 | case PIPE_CONTROL: |
| 1395 | case PIPE_BULK: |
| 1396 | start_atl_transfers(isp1362_hcd); |
| 1397 | break; |
| 1398 | case PIPE_INTERRUPT: |
| 1399 | start_intl_transfers(isp1362_hcd); |
| 1400 | break; |
| 1401 | case PIPE_ISOCHRONOUS: |
| 1402 | start_iso_transfers(isp1362_hcd); |
| 1403 | break; |
| 1404 | default: |
| 1405 | BUG(); |
| 1406 | } |
| 1407 | fail: |
| 1408 | if (retval) |
| 1409 | usb_hcd_unlink_urb_from_ep(hcd, urb); |
| 1410 | |
| 1411 | |
| 1412 | fail_not_linked: |
| 1413 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 1414 | if (retval) |
| 1415 | DBG(0, "%s: urb %p failed with %d\n", __func__, urb, retval); |
| 1416 | return retval; |
| 1417 | } |
| 1418 | |
| 1419 | static int isp1362_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) |
| 1420 | { |
| 1421 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 1422 | struct usb_host_endpoint *hep; |
| 1423 | unsigned long flags; |
| 1424 | struct isp1362_ep *ep; |
| 1425 | int retval = 0; |
| 1426 | |
| 1427 | DBG(3, "%s: urb %p\n", __func__, urb); |
| 1428 | |
| 1429 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 1430 | retval = usb_hcd_check_unlink_urb(hcd, urb, status); |
| 1431 | if (retval) |
| 1432 | goto done; |
| 1433 | |
| 1434 | hep = urb->hcpriv; |
| 1435 | |
| 1436 | if (!hep) { |
| 1437 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 1438 | return -EIDRM; |
| 1439 | } |
| 1440 | |
| 1441 | ep = hep->hcpriv; |
| 1442 | if (ep) { |
| 1443 | /* In front of queue? */ |
| 1444 | if (ep->hep->urb_list.next == &urb->urb_list) { |
| 1445 | if (!list_empty(&ep->active)) { |
| 1446 | DBG(1, "%s: urb %p ep %p req %d active PTD[%d] $%04x\n", __func__, |
| 1447 | urb, ep, ep->num_req, ep->ptd_index, ep->ptd_offset); |
| 1448 | /* disable processing and queue PTD for removal */ |
| 1449 | remove_ptd(isp1362_hcd, ep); |
| 1450 | urb = NULL; |
| 1451 | } |
| 1452 | } |
| 1453 | if (urb) { |
| 1454 | DBG(1, "%s: Finishing ep %p req %d\n", __func__, ep, |
| 1455 | ep->num_req); |
| 1456 | finish_request(isp1362_hcd, ep, urb, status); |
| 1457 | } else |
| 1458 | DBG(1, "%s: urb %p active; wait4irq\n", __func__, urb); |
| 1459 | } else { |
| 1460 | pr_warning("%s: No EP in URB %p\n", __func__, urb); |
| 1461 | retval = -EINVAL; |
| 1462 | } |
| 1463 | done: |
| 1464 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 1465 | |
| 1466 | DBG(3, "%s: exit\n", __func__); |
| 1467 | |
| 1468 | return retval; |
| 1469 | } |
| 1470 | |
| 1471 | static void isp1362_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep) |
| 1472 | { |
| 1473 | struct isp1362_ep *ep = hep->hcpriv; |
| 1474 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 1475 | unsigned long flags; |
| 1476 | |
| 1477 | DBG(1, "%s: ep %p\n", __func__, ep); |
| 1478 | if (!ep) |
| 1479 | return; |
| 1480 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 1481 | if (!list_empty(&hep->urb_list)) { |
| 1482 | if (!list_empty(&ep->active) && list_empty(&ep->remove_list)) { |
| 1483 | DBG(1, "%s: Removing ep %p req %d PTD[%d] $%04x\n", __func__, |
| 1484 | ep, ep->num_req, ep->ptd_index, ep->ptd_offset); |
| 1485 | remove_ptd(isp1362_hcd, ep); |
| 1486 | pr_info("%s: Waiting for Interrupt to clean up\n", __func__); |
| 1487 | } |
| 1488 | } |
| 1489 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 1490 | /* Wait for interrupt to clear out active list */ |
| 1491 | while (!list_empty(&ep->active)) |
| 1492 | msleep(1); |
| 1493 | |
| 1494 | DBG(1, "%s: Freeing EP %p\n", __func__, ep); |
| 1495 | |
| 1496 | usb_put_dev(ep->udev); |
| 1497 | kfree(ep); |
| 1498 | hep->hcpriv = NULL; |
| 1499 | } |
| 1500 | |
| 1501 | static int isp1362_get_frame(struct usb_hcd *hcd) |
| 1502 | { |
| 1503 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 1504 | u32 fmnum; |
| 1505 | unsigned long flags; |
| 1506 | |
| 1507 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 1508 | fmnum = isp1362_read_reg32(isp1362_hcd, HCFMNUM); |
| 1509 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 1510 | |
| 1511 | return (int)fmnum; |
| 1512 | } |
| 1513 | |
| 1514 | /*-------------------------------------------------------------------------*/ |
| 1515 | |
| 1516 | /* Adapted from ohci-hub.c */ |
| 1517 | static int isp1362_hub_status_data(struct usb_hcd *hcd, char *buf) |
| 1518 | { |
| 1519 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 1520 | int ports, i, changed = 0; |
| 1521 | unsigned long flags; |
| 1522 | |
| 1523 | if (!HC_IS_RUNNING(hcd->state)) |
| 1524 | return -ESHUTDOWN; |
| 1525 | |
| 1526 | /* Report no status change now, if we are scheduled to be |
| 1527 | called later */ |
| 1528 | if (timer_pending(&hcd->rh_timer)) |
| 1529 | return 0; |
| 1530 | |
| 1531 | ports = isp1362_hcd->rhdesca & RH_A_NDP; |
| 1532 | BUG_ON(ports > 2); |
| 1533 | |
| 1534 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 1535 | /* init status */ |
| 1536 | if (isp1362_hcd->rhstatus & (RH_HS_LPSC | RH_HS_OCIC)) |
| 1537 | buf[0] = changed = 1; |
| 1538 | else |
| 1539 | buf[0] = 0; |
| 1540 | |
| 1541 | for (i = 0; i < ports; i++) { |
| 1542 | u32 status = isp1362_hcd->rhport[i]; |
| 1543 | |
| 1544 | if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC | |
| 1545 | RH_PS_OCIC | RH_PS_PRSC)) { |
| 1546 | changed = 1; |
| 1547 | buf[0] |= 1 << (i + 1); |
| 1548 | continue; |
| 1549 | } |
| 1550 | |
| 1551 | if (!(status & RH_PS_CCS)) |
| 1552 | continue; |
| 1553 | } |
| 1554 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 1555 | return changed; |
| 1556 | } |
| 1557 | |
| 1558 | static void isp1362_hub_descriptor(struct isp1362_hcd *isp1362_hcd, |
| 1559 | struct usb_hub_descriptor *desc) |
| 1560 | { |
| 1561 | u32 reg = isp1362_hcd->rhdesca; |
| 1562 | |
| 1563 | DBG(3, "%s: enter\n", __func__); |
| 1564 | |
| 1565 | desc->bDescriptorType = 0x29; |
| 1566 | desc->bDescLength = 9; |
| 1567 | desc->bHubContrCurrent = 0; |
| 1568 | desc->bNbrPorts = reg & 0x3; |
| 1569 | /* Power switching, device type, overcurrent. */ |
| 1570 | desc->wHubCharacteristics = cpu_to_le16((reg >> 8) & 0x1f); |
| 1571 | DBG(0, "%s: hubcharacteristics = %02x\n", __func__, cpu_to_le16((reg >> 8) & 0x1f)); |
| 1572 | desc->bPwrOn2PwrGood = (reg >> 24) & 0xff; |
| 1573 | /* two bitmaps: ports removable, and legacy PortPwrCtrlMask */ |
| 1574 | desc->bitmap[0] = desc->bNbrPorts == 1 ? 1 << 1 : 3 << 1; |
| 1575 | desc->bitmap[1] = ~0; |
| 1576 | |
| 1577 | DBG(3, "%s: exit\n", __func__); |
| 1578 | } |
| 1579 | |
| 1580 | /* Adapted from ohci-hub.c */ |
| 1581 | static int isp1362_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, |
| 1582 | u16 wIndex, char *buf, u16 wLength) |
| 1583 | { |
| 1584 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 1585 | int retval = 0; |
| 1586 | unsigned long flags; |
| 1587 | unsigned long t1; |
| 1588 | int ports = isp1362_hcd->rhdesca & RH_A_NDP; |
| 1589 | u32 tmp = 0; |
| 1590 | |
| 1591 | switch (typeReq) { |
| 1592 | case ClearHubFeature: |
| 1593 | DBG(0, "ClearHubFeature: "); |
| 1594 | switch (wValue) { |
| 1595 | case C_HUB_OVER_CURRENT: |
| 1596 | _DBG(0, "C_HUB_OVER_CURRENT\n"); |
| 1597 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 1598 | isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_OCIC); |
| 1599 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 1600 | case C_HUB_LOCAL_POWER: |
| 1601 | _DBG(0, "C_HUB_LOCAL_POWER\n"); |
| 1602 | break; |
| 1603 | default: |
| 1604 | goto error; |
| 1605 | } |
| 1606 | break; |
| 1607 | case SetHubFeature: |
| 1608 | DBG(0, "SetHubFeature: "); |
| 1609 | switch (wValue) { |
| 1610 | case C_HUB_OVER_CURRENT: |
| 1611 | case C_HUB_LOCAL_POWER: |
| 1612 | _DBG(0, "C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n"); |
| 1613 | break; |
| 1614 | default: |
| 1615 | goto error; |
| 1616 | } |
| 1617 | break; |
| 1618 | case GetHubDescriptor: |
| 1619 | DBG(0, "GetHubDescriptor\n"); |
| 1620 | isp1362_hub_descriptor(isp1362_hcd, (struct usb_hub_descriptor *)buf); |
| 1621 | break; |
| 1622 | case GetHubStatus: |
| 1623 | DBG(0, "GetHubStatus\n"); |
| 1624 | put_unaligned(cpu_to_le32(0), (__le32 *) buf); |
| 1625 | break; |
| 1626 | case GetPortStatus: |
| 1627 | #ifndef VERBOSE |
| 1628 | DBG(0, "GetPortStatus\n"); |
| 1629 | #endif |
| 1630 | if (!wIndex || wIndex > ports) |
| 1631 | goto error; |
| 1632 | tmp = isp1362_hcd->rhport[--wIndex]; |
| 1633 | put_unaligned(cpu_to_le32(tmp), (__le32 *) buf); |
| 1634 | break; |
| 1635 | case ClearPortFeature: |
| 1636 | DBG(0, "ClearPortFeature: "); |
| 1637 | if (!wIndex || wIndex > ports) |
| 1638 | goto error; |
| 1639 | wIndex--; |
| 1640 | |
| 1641 | switch (wValue) { |
| 1642 | case USB_PORT_FEAT_ENABLE: |
| 1643 | _DBG(0, "USB_PORT_FEAT_ENABLE\n"); |
| 1644 | tmp = RH_PS_CCS; |
| 1645 | break; |
| 1646 | case USB_PORT_FEAT_C_ENABLE: |
| 1647 | _DBG(0, "USB_PORT_FEAT_C_ENABLE\n"); |
| 1648 | tmp = RH_PS_PESC; |
| 1649 | break; |
| 1650 | case USB_PORT_FEAT_SUSPEND: |
| 1651 | _DBG(0, "USB_PORT_FEAT_SUSPEND\n"); |
| 1652 | tmp = RH_PS_POCI; |
| 1653 | break; |
| 1654 | case USB_PORT_FEAT_C_SUSPEND: |
| 1655 | _DBG(0, "USB_PORT_FEAT_C_SUSPEND\n"); |
| 1656 | tmp = RH_PS_PSSC; |
| 1657 | break; |
| 1658 | case USB_PORT_FEAT_POWER: |
| 1659 | _DBG(0, "USB_PORT_FEAT_POWER\n"); |
| 1660 | tmp = RH_PS_LSDA; |
| 1661 | |
| 1662 | break; |
| 1663 | case USB_PORT_FEAT_C_CONNECTION: |
| 1664 | _DBG(0, "USB_PORT_FEAT_C_CONNECTION\n"); |
| 1665 | tmp = RH_PS_CSC; |
| 1666 | break; |
| 1667 | case USB_PORT_FEAT_C_OVER_CURRENT: |
| 1668 | _DBG(0, "USB_PORT_FEAT_C_OVER_CURRENT\n"); |
| 1669 | tmp = RH_PS_OCIC; |
| 1670 | break; |
| 1671 | case USB_PORT_FEAT_C_RESET: |
| 1672 | _DBG(0, "USB_PORT_FEAT_C_RESET\n"); |
| 1673 | tmp = RH_PS_PRSC; |
| 1674 | break; |
| 1675 | default: |
| 1676 | goto error; |
| 1677 | } |
| 1678 | |
| 1679 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 1680 | isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, tmp); |
| 1681 | isp1362_hcd->rhport[wIndex] = |
| 1682 | isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); |
| 1683 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 1684 | break; |
| 1685 | case SetPortFeature: |
| 1686 | DBG(0, "SetPortFeature: "); |
| 1687 | if (!wIndex || wIndex > ports) |
| 1688 | goto error; |
| 1689 | wIndex--; |
| 1690 | switch (wValue) { |
| 1691 | case USB_PORT_FEAT_SUSPEND: |
| 1692 | _DBG(0, "USB_PORT_FEAT_SUSPEND\n"); |
| 1693 | #ifdef CONFIG_USB_OTG |
| 1694 | if (ohci->hcd.self.otg_port == (wIndex + 1) && |
| 1695 | ohci->hcd.self.b_hnp_enable) { |
| 1696 | start_hnp(ohci); |
| 1697 | break; |
| 1698 | } |
| 1699 | #endif |
| 1700 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 1701 | isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PSS); |
| 1702 | isp1362_hcd->rhport[wIndex] = |
| 1703 | isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); |
| 1704 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 1705 | break; |
| 1706 | case USB_PORT_FEAT_POWER: |
| 1707 | _DBG(0, "USB_PORT_FEAT_POWER\n"); |
| 1708 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 1709 | isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PPS); |
| 1710 | isp1362_hcd->rhport[wIndex] = |
| 1711 | isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); |
| 1712 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 1713 | break; |
| 1714 | case USB_PORT_FEAT_RESET: |
| 1715 | _DBG(0, "USB_PORT_FEAT_RESET\n"); |
| 1716 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 1717 | |
| 1718 | t1 = jiffies + msecs_to_jiffies(USB_RESET_WIDTH); |
| 1719 | while (time_before(jiffies, t1)) { |
| 1720 | /* spin until any current reset finishes */ |
| 1721 | for (;;) { |
| 1722 | tmp = isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); |
| 1723 | if (!(tmp & RH_PS_PRS)) |
| 1724 | break; |
| 1725 | udelay(500); |
| 1726 | } |
| 1727 | if (!(tmp & RH_PS_CCS)) |
| 1728 | break; |
| 1729 | /* Reset lasts 10ms (claims datasheet) */ |
| 1730 | isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, (RH_PS_PRS)); |
| 1731 | |
| 1732 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 1733 | msleep(10); |
| 1734 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 1735 | } |
| 1736 | |
| 1737 | isp1362_hcd->rhport[wIndex] = isp1362_read_reg32(isp1362_hcd, |
| 1738 | HCRHPORT1 + wIndex); |
| 1739 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 1740 | break; |
| 1741 | default: |
| 1742 | goto error; |
| 1743 | } |
| 1744 | break; |
| 1745 | |
| 1746 | default: |
| 1747 | error: |
| 1748 | /* "protocol stall" on error */ |
| 1749 | _DBG(0, "PROTOCOL STALL\n"); |
| 1750 | retval = -EPIPE; |
| 1751 | } |
| 1752 | |
| 1753 | return retval; |
| 1754 | } |
| 1755 | |
| 1756 | #ifdef CONFIG_PM |
| 1757 | static int isp1362_bus_suspend(struct usb_hcd *hcd) |
| 1758 | { |
| 1759 | int status = 0; |
| 1760 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 1761 | unsigned long flags; |
| 1762 | |
| 1763 | if (time_before(jiffies, isp1362_hcd->next_statechange)) |
| 1764 | msleep(5); |
| 1765 | |
| 1766 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 1767 | |
| 1768 | isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); |
| 1769 | switch (isp1362_hcd->hc_control & OHCI_CTRL_HCFS) { |
| 1770 | case OHCI_USB_RESUME: |
| 1771 | DBG(0, "%s: resume/suspend?\n", __func__); |
| 1772 | isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS; |
| 1773 | isp1362_hcd->hc_control |= OHCI_USB_RESET; |
| 1774 | isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); |
| 1775 | /* FALL THROUGH */ |
| 1776 | case OHCI_USB_RESET: |
| 1777 | status = -EBUSY; |
| 1778 | pr_warning("%s: needs reinit!\n", __func__); |
| 1779 | goto done; |
| 1780 | case OHCI_USB_SUSPEND: |
| 1781 | pr_warning("%s: already suspended?\n", __func__); |
| 1782 | goto done; |
| 1783 | } |
| 1784 | DBG(0, "%s: suspend root hub\n", __func__); |
| 1785 | |
| 1786 | /* First stop any processing */ |
| 1787 | hcd->state = HC_STATE_QUIESCING; |
| 1788 | if (!list_empty(&isp1362_hcd->atl_queue.active) || |
| 1789 | !list_empty(&isp1362_hcd->intl_queue.active) || |
| 1790 | !list_empty(&isp1362_hcd->istl_queue[0] .active) || |
| 1791 | !list_empty(&isp1362_hcd->istl_queue[1] .active)) { |
| 1792 | int limit; |
| 1793 | |
| 1794 | isp1362_write_reg32(isp1362_hcd, HCATLSKIP, ~0); |
| 1795 | isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, ~0); |
| 1796 | isp1362_write_reg16(isp1362_hcd, HCBUFSTAT, 0); |
| 1797 | isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); |
| 1798 | isp1362_write_reg32(isp1362_hcd, HCINTSTAT, OHCI_INTR_SF); |
| 1799 | |
| 1800 | DBG(0, "%s: stopping schedules ...\n", __func__); |
| 1801 | limit = 2000; |
| 1802 | while (limit > 0) { |
| 1803 | udelay(250); |
| 1804 | limit -= 250; |
| 1805 | if (isp1362_read_reg32(isp1362_hcd, HCINTSTAT) & OHCI_INTR_SF) |
| 1806 | break; |
| 1807 | } |
| 1808 | mdelay(7); |
| 1809 | if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ATL) { |
| 1810 | u32 done_map = isp1362_read_reg32(isp1362_hcd, HCATLDONE); |
| 1811 | finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->atl_queue); |
| 1812 | } |
| 1813 | if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_INTL) { |
| 1814 | u32 done_map = isp1362_read_reg32(isp1362_hcd, HCINTLDONE); |
| 1815 | finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->intl_queue); |
| 1816 | } |
| 1817 | if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ISTL0) |
| 1818 | finish_iso_transfers(isp1362_hcd, &isp1362_hcd->istl_queue[0]); |
| 1819 | if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ISTL1) |
| 1820 | finish_iso_transfers(isp1362_hcd, &isp1362_hcd->istl_queue[1]); |
| 1821 | } |
| 1822 | DBG(0, "%s: HCINTSTAT: %08x\n", __func__, |
| 1823 | isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); |
| 1824 | isp1362_write_reg32(isp1362_hcd, HCINTSTAT, |
| 1825 | isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); |
| 1826 | |
| 1827 | /* Suspend hub */ |
| 1828 | isp1362_hcd->hc_control = OHCI_USB_SUSPEND; |
| 1829 | isp1362_show_reg(isp1362_hcd, HCCONTROL); |
| 1830 | isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); |
| 1831 | isp1362_show_reg(isp1362_hcd, HCCONTROL); |
| 1832 | |
| 1833 | #if 1 |
| 1834 | isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); |
| 1835 | if ((isp1362_hcd->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_SUSPEND) { |
| 1836 | pr_err("%s: controller won't suspend %08x\n", __func__, |
| 1837 | isp1362_hcd->hc_control); |
| 1838 | status = -EBUSY; |
| 1839 | } else |
| 1840 | #endif |
| 1841 | { |
| 1842 | /* no resumes until devices finish suspending */ |
| 1843 | isp1362_hcd->next_statechange = jiffies + msecs_to_jiffies(5); |
| 1844 | } |
| 1845 | done: |
| 1846 | if (status == 0) { |
| 1847 | hcd->state = HC_STATE_SUSPENDED; |
| 1848 | DBG(0, "%s: HCD suspended: %08x\n", __func__, |
| 1849 | isp1362_read_reg32(isp1362_hcd, HCCONTROL)); |
| 1850 | } |
| 1851 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 1852 | return status; |
| 1853 | } |
| 1854 | |
| 1855 | static int isp1362_bus_resume(struct usb_hcd *hcd) |
| 1856 | { |
| 1857 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 1858 | u32 port; |
| 1859 | unsigned long flags; |
| 1860 | int status = -EINPROGRESS; |
| 1861 | |
| 1862 | if (time_before(jiffies, isp1362_hcd->next_statechange)) |
| 1863 | msleep(5); |
| 1864 | |
| 1865 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 1866 | isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); |
| 1867 | pr_info("%s: HCCONTROL: %08x\n", __func__, isp1362_hcd->hc_control); |
| 1868 | if (hcd->state == HC_STATE_RESUMING) { |
| 1869 | pr_warning("%s: duplicate resume\n", __func__); |
| 1870 | status = 0; |
| 1871 | } else |
| 1872 | switch (isp1362_hcd->hc_control & OHCI_CTRL_HCFS) { |
| 1873 | case OHCI_USB_SUSPEND: |
| 1874 | DBG(0, "%s: resume root hub\n", __func__); |
| 1875 | isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS; |
| 1876 | isp1362_hcd->hc_control |= OHCI_USB_RESUME; |
| 1877 | isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); |
| 1878 | break; |
| 1879 | case OHCI_USB_RESUME: |
| 1880 | /* HCFS changes sometime after INTR_RD */ |
| 1881 | DBG(0, "%s: remote wakeup\n", __func__); |
| 1882 | break; |
| 1883 | case OHCI_USB_OPER: |
| 1884 | DBG(0, "%s: odd resume\n", __func__); |
| 1885 | status = 0; |
| 1886 | hcd->self.root_hub->dev.power.power_state = PMSG_ON; |
| 1887 | break; |
| 1888 | default: /* RESET, we lost power */ |
| 1889 | DBG(0, "%s: root hub hardware reset\n", __func__); |
| 1890 | status = -EBUSY; |
| 1891 | } |
| 1892 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 1893 | if (status == -EBUSY) { |
| 1894 | DBG(0, "%s: Restarting HC\n", __func__); |
| 1895 | isp1362_hc_stop(hcd); |
| 1896 | return isp1362_hc_start(hcd); |
| 1897 | } |
| 1898 | if (status != -EINPROGRESS) |
| 1899 | return status; |
| 1900 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 1901 | port = isp1362_read_reg32(isp1362_hcd, HCRHDESCA) & RH_A_NDP; |
| 1902 | while (port--) { |
| 1903 | u32 stat = isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + port); |
| 1904 | |
| 1905 | /* force global, not selective, resume */ |
| 1906 | if (!(stat & RH_PS_PSS)) { |
| 1907 | DBG(0, "%s: Not Resuming RH port %d\n", __func__, port); |
| 1908 | continue; |
| 1909 | } |
| 1910 | DBG(0, "%s: Resuming RH port %d\n", __func__, port); |
| 1911 | isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + port, RH_PS_POCI); |
| 1912 | } |
| 1913 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 1914 | |
| 1915 | /* Some controllers (lucent) need extra-long delays */ |
| 1916 | hcd->state = HC_STATE_RESUMING; |
| 1917 | mdelay(20 /* usb 11.5.1.10 */ + 15); |
| 1918 | |
| 1919 | isp1362_hcd->hc_control = OHCI_USB_OPER; |
| 1920 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 1921 | isp1362_show_reg(isp1362_hcd, HCCONTROL); |
| 1922 | isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); |
| 1923 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 1924 | /* TRSMRCY */ |
| 1925 | msleep(10); |
| 1926 | |
| 1927 | /* keep it alive for ~5x suspend + resume costs */ |
| 1928 | isp1362_hcd->next_statechange = jiffies + msecs_to_jiffies(250); |
| 1929 | |
| 1930 | hcd->self.root_hub->dev.power.power_state = PMSG_ON; |
| 1931 | hcd->state = HC_STATE_RUNNING; |
| 1932 | return 0; |
| 1933 | } |
| 1934 | #else |
| 1935 | #define isp1362_bus_suspend NULL |
| 1936 | #define isp1362_bus_resume NULL |
| 1937 | #endif |
| 1938 | |
| 1939 | /*-------------------------------------------------------------------------*/ |
| 1940 | |
| 1941 | #ifdef STUB_DEBUG_FILE |
| 1942 | |
| 1943 | static inline void create_debug_file(struct isp1362_hcd *isp1362_hcd) |
| 1944 | { |
| 1945 | } |
| 1946 | static inline void remove_debug_file(struct isp1362_hcd *isp1362_hcd) |
| 1947 | { |
| 1948 | } |
| 1949 | |
| 1950 | #else |
| 1951 | |
| 1952 | #include <linux/proc_fs.h> |
| 1953 | #include <linux/seq_file.h> |
| 1954 | |
| 1955 | static void dump_irq(struct seq_file *s, char *label, u16 mask) |
| 1956 | { |
| 1957 | seq_printf(s, "%-15s %04x%s%s%s%s%s%s\n", label, mask, |
| 1958 | mask & HCuPINT_CLKRDY ? " clkrdy" : "", |
| 1959 | mask & HCuPINT_SUSP ? " susp" : "", |
| 1960 | mask & HCuPINT_OPR ? " opr" : "", |
| 1961 | mask & HCuPINT_EOT ? " eot" : "", |
| 1962 | mask & HCuPINT_ATL ? " atl" : "", |
| 1963 | mask & HCuPINT_SOF ? " sof" : ""); |
| 1964 | } |
| 1965 | |
| 1966 | static void dump_int(struct seq_file *s, char *label, u32 mask) |
| 1967 | { |
| 1968 | seq_printf(s, "%-15s %08x%s%s%s%s%s%s%s\n", label, mask, |
| 1969 | mask & OHCI_INTR_MIE ? " MIE" : "", |
| 1970 | mask & OHCI_INTR_RHSC ? " rhsc" : "", |
| 1971 | mask & OHCI_INTR_FNO ? " fno" : "", |
| 1972 | mask & OHCI_INTR_UE ? " ue" : "", |
| 1973 | mask & OHCI_INTR_RD ? " rd" : "", |
| 1974 | mask & OHCI_INTR_SF ? " sof" : "", |
| 1975 | mask & OHCI_INTR_SO ? " so" : ""); |
| 1976 | } |
| 1977 | |
| 1978 | static void dump_ctrl(struct seq_file *s, char *label, u32 mask) |
| 1979 | { |
| 1980 | seq_printf(s, "%-15s %08x%s%s%s\n", label, mask, |
| 1981 | mask & OHCI_CTRL_RWC ? " rwc" : "", |
| 1982 | mask & OHCI_CTRL_RWE ? " rwe" : "", |
| 1983 | ({ |
| 1984 | char *hcfs; |
| 1985 | switch (mask & OHCI_CTRL_HCFS) { |
| 1986 | case OHCI_USB_OPER: |
| 1987 | hcfs = " oper"; |
| 1988 | break; |
| 1989 | case OHCI_USB_RESET: |
| 1990 | hcfs = " reset"; |
| 1991 | break; |
| 1992 | case OHCI_USB_RESUME: |
| 1993 | hcfs = " resume"; |
| 1994 | break; |
| 1995 | case OHCI_USB_SUSPEND: |
| 1996 | hcfs = " suspend"; |
| 1997 | break; |
| 1998 | default: |
| 1999 | hcfs = " ?"; |
| 2000 | } |
| 2001 | hcfs; |
| 2002 | })); |
| 2003 | } |
| 2004 | |
| 2005 | static void dump_regs(struct seq_file *s, struct isp1362_hcd *isp1362_hcd) |
| 2006 | { |
| 2007 | seq_printf(s, "HCREVISION [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCREVISION), |
| 2008 | isp1362_read_reg32(isp1362_hcd, HCREVISION)); |
| 2009 | seq_printf(s, "HCCONTROL [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCCONTROL), |
| 2010 | isp1362_read_reg32(isp1362_hcd, HCCONTROL)); |
| 2011 | seq_printf(s, "HCCMDSTAT [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCCMDSTAT), |
| 2012 | isp1362_read_reg32(isp1362_hcd, HCCMDSTAT)); |
| 2013 | seq_printf(s, "HCINTSTAT [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTSTAT), |
| 2014 | isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); |
| 2015 | seq_printf(s, "HCINTENB [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTENB), |
| 2016 | isp1362_read_reg32(isp1362_hcd, HCINTENB)); |
| 2017 | seq_printf(s, "HCFMINTVL [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMINTVL), |
| 2018 | isp1362_read_reg32(isp1362_hcd, HCFMINTVL)); |
| 2019 | seq_printf(s, "HCFMREM [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMREM), |
| 2020 | isp1362_read_reg32(isp1362_hcd, HCFMREM)); |
| 2021 | seq_printf(s, "HCFMNUM [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMNUM), |
| 2022 | isp1362_read_reg32(isp1362_hcd, HCFMNUM)); |
| 2023 | seq_printf(s, "HCLSTHRESH [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCLSTHRESH), |
| 2024 | isp1362_read_reg32(isp1362_hcd, HCLSTHRESH)); |
| 2025 | seq_printf(s, "HCRHDESCA [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHDESCA), |
| 2026 | isp1362_read_reg32(isp1362_hcd, HCRHDESCA)); |
| 2027 | seq_printf(s, "HCRHDESCB [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHDESCB), |
| 2028 | isp1362_read_reg32(isp1362_hcd, HCRHDESCB)); |
| 2029 | seq_printf(s, "HCRHSTATUS [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHSTATUS), |
| 2030 | isp1362_read_reg32(isp1362_hcd, HCRHSTATUS)); |
| 2031 | seq_printf(s, "HCRHPORT1 [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHPORT1), |
| 2032 | isp1362_read_reg32(isp1362_hcd, HCRHPORT1)); |
| 2033 | seq_printf(s, "HCRHPORT2 [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHPORT2), |
| 2034 | isp1362_read_reg32(isp1362_hcd, HCRHPORT2)); |
| 2035 | seq_printf(s, "\n"); |
| 2036 | seq_printf(s, "HCHWCFG [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCHWCFG), |
| 2037 | isp1362_read_reg16(isp1362_hcd, HCHWCFG)); |
| 2038 | seq_printf(s, "HCDMACFG [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCDMACFG), |
| 2039 | isp1362_read_reg16(isp1362_hcd, HCDMACFG)); |
| 2040 | seq_printf(s, "HCXFERCTR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCXFERCTR), |
| 2041 | isp1362_read_reg16(isp1362_hcd, HCXFERCTR)); |
| 2042 | seq_printf(s, "HCuPINT [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCuPINT), |
| 2043 | isp1362_read_reg16(isp1362_hcd, HCuPINT)); |
| 2044 | seq_printf(s, "HCuPINTENB [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCuPINTENB), |
| 2045 | isp1362_read_reg16(isp1362_hcd, HCuPINTENB)); |
| 2046 | seq_printf(s, "HCCHIPID [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCCHIPID), |
| 2047 | isp1362_read_reg16(isp1362_hcd, HCCHIPID)); |
| 2048 | seq_printf(s, "HCSCRATCH [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCSCRATCH), |
| 2049 | isp1362_read_reg16(isp1362_hcd, HCSCRATCH)); |
| 2050 | seq_printf(s, "HCBUFSTAT [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCBUFSTAT), |
| 2051 | isp1362_read_reg16(isp1362_hcd, HCBUFSTAT)); |
| 2052 | seq_printf(s, "HCDIRADDR [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCDIRADDR), |
| 2053 | isp1362_read_reg32(isp1362_hcd, HCDIRADDR)); |
| 2054 | #if 0 |
| 2055 | seq_printf(s, "HCDIRDATA [%02x] %04x\n", ISP1362_REG_NO(HCDIRDATA), |
| 2056 | isp1362_read_reg16(isp1362_hcd, HCDIRDATA)); |
| 2057 | #endif |
| 2058 | seq_printf(s, "HCISTLBUFSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCISTLBUFSZ), |
| 2059 | isp1362_read_reg16(isp1362_hcd, HCISTLBUFSZ)); |
| 2060 | seq_printf(s, "HCISTLRATE [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCISTLRATE), |
| 2061 | isp1362_read_reg16(isp1362_hcd, HCISTLRATE)); |
| 2062 | seq_printf(s, "\n"); |
| 2063 | seq_printf(s, "HCINTLBUFSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLBUFSZ), |
| 2064 | isp1362_read_reg16(isp1362_hcd, HCINTLBUFSZ)); |
| 2065 | seq_printf(s, "HCINTLBLKSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLBLKSZ), |
| 2066 | isp1362_read_reg16(isp1362_hcd, HCINTLBLKSZ)); |
| 2067 | seq_printf(s, "HCINTLDONE [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLDONE), |
| 2068 | isp1362_read_reg32(isp1362_hcd, HCINTLDONE)); |
| 2069 | seq_printf(s, "HCINTLSKIP [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLSKIP), |
| 2070 | isp1362_read_reg32(isp1362_hcd, HCINTLSKIP)); |
| 2071 | seq_printf(s, "HCINTLLAST [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLLAST), |
| 2072 | isp1362_read_reg32(isp1362_hcd, HCINTLLAST)); |
| 2073 | seq_printf(s, "HCINTLCURR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLCURR), |
| 2074 | isp1362_read_reg16(isp1362_hcd, HCINTLCURR)); |
| 2075 | seq_printf(s, "\n"); |
| 2076 | seq_printf(s, "HCATLBUFSZ [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLBUFSZ), |
| 2077 | isp1362_read_reg16(isp1362_hcd, HCATLBUFSZ)); |
| 2078 | seq_printf(s, "HCATLBLKSZ [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLBLKSZ), |
| 2079 | isp1362_read_reg16(isp1362_hcd, HCATLBLKSZ)); |
| 2080 | #if 0 |
| 2081 | seq_printf(s, "HCATLDONE [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDONE), |
| 2082 | isp1362_read_reg32(isp1362_hcd, HCATLDONE)); |
| 2083 | #endif |
| 2084 | seq_printf(s, "HCATLSKIP [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLSKIP), |
| 2085 | isp1362_read_reg32(isp1362_hcd, HCATLSKIP)); |
| 2086 | seq_printf(s, "HCATLLAST [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLLAST), |
| 2087 | isp1362_read_reg32(isp1362_hcd, HCATLLAST)); |
| 2088 | seq_printf(s, "HCATLCURR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLCURR), |
| 2089 | isp1362_read_reg16(isp1362_hcd, HCATLCURR)); |
| 2090 | seq_printf(s, "\n"); |
| 2091 | seq_printf(s, "HCATLDTC [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDTC), |
| 2092 | isp1362_read_reg16(isp1362_hcd, HCATLDTC)); |
| 2093 | seq_printf(s, "HCATLDTCTO [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDTCTO), |
| 2094 | isp1362_read_reg16(isp1362_hcd, HCATLDTCTO)); |
| 2095 | } |
| 2096 | |
| 2097 | static int proc_isp1362_show(struct seq_file *s, void *unused) |
| 2098 | { |
| 2099 | struct isp1362_hcd *isp1362_hcd = s->private; |
| 2100 | struct isp1362_ep *ep; |
| 2101 | int i; |
| 2102 | |
| 2103 | seq_printf(s, "%s\n%s version %s\n", |
| 2104 | isp1362_hcd_to_hcd(isp1362_hcd)->product_desc, hcd_name, DRIVER_VERSION); |
| 2105 | |
| 2106 | /* collect statistics to help estimate potential win for |
| 2107 | * DMA engines that care about alignment (PXA) |
| 2108 | */ |
| 2109 | seq_printf(s, "alignment: 16b/%ld 8b/%ld 4b/%ld 2b/%ld 1b/%ld\n", |
| 2110 | isp1362_hcd->stat16, isp1362_hcd->stat8, isp1362_hcd->stat4, |
| 2111 | isp1362_hcd->stat2, isp1362_hcd->stat1); |
| 2112 | seq_printf(s, "max # ptds in ATL fifo: %d\n", isp1362_hcd->atl_queue.stat_maxptds); |
| 2113 | seq_printf(s, "max # ptds in INTL fifo: %d\n", isp1362_hcd->intl_queue.stat_maxptds); |
| 2114 | seq_printf(s, "max # ptds in ISTL fifo: %d\n", |
| 2115 | max(isp1362_hcd->istl_queue[0] .stat_maxptds, |
| 2116 | isp1362_hcd->istl_queue[1] .stat_maxptds)); |
| 2117 | |
| 2118 | /* FIXME: don't show the following in suspended state */ |
| 2119 | spin_lock_irq(&isp1362_hcd->lock); |
| 2120 | |
| 2121 | dump_irq(s, "hc_irq_enable", isp1362_read_reg16(isp1362_hcd, HCuPINTENB)); |
| 2122 | dump_irq(s, "hc_irq_status", isp1362_read_reg16(isp1362_hcd, HCuPINT)); |
| 2123 | dump_int(s, "ohci_int_enable", isp1362_read_reg32(isp1362_hcd, HCINTENB)); |
| 2124 | dump_int(s, "ohci_int_status", isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); |
| 2125 | dump_ctrl(s, "ohci_control", isp1362_read_reg32(isp1362_hcd, HCCONTROL)); |
| 2126 | |
| 2127 | for (i = 0; i < NUM_ISP1362_IRQS; i++) |
| 2128 | if (isp1362_hcd->irq_stat[i]) |
| 2129 | seq_printf(s, "%-15s: %d\n", |
| 2130 | ISP1362_INT_NAME(i), isp1362_hcd->irq_stat[i]); |
| 2131 | |
| 2132 | dump_regs(s, isp1362_hcd); |
| 2133 | list_for_each_entry(ep, &isp1362_hcd->async, schedule) { |
| 2134 | struct urb *urb; |
| 2135 | |
| 2136 | seq_printf(s, "%p, ep%d%s, maxpacket %d:\n", ep, ep->epnum, |
| 2137 | ({ |
| 2138 | char *s; |
| 2139 | switch (ep->nextpid) { |
| 2140 | case USB_PID_IN: |
| 2141 | s = "in"; |
| 2142 | break; |
| 2143 | case USB_PID_OUT: |
| 2144 | s = "out"; |
| 2145 | break; |
| 2146 | case USB_PID_SETUP: |
| 2147 | s = "setup"; |
| 2148 | break; |
| 2149 | case USB_PID_ACK: |
| 2150 | s = "status"; |
| 2151 | break; |
| 2152 | default: |
| 2153 | s = "?"; |
| 2154 | break; |
| 2155 | }; |
| 2156 | s;}), ep->maxpacket) ; |
| 2157 | list_for_each_entry(urb, &ep->hep->urb_list, urb_list) { |
| 2158 | seq_printf(s, " urb%p, %d/%d\n", urb, |
| 2159 | urb->actual_length, |
| 2160 | urb->transfer_buffer_length); |
| 2161 | } |
| 2162 | } |
| 2163 | if (!list_empty(&isp1362_hcd->async)) |
| 2164 | seq_printf(s, "\n"); |
| 2165 | dump_ptd_queue(&isp1362_hcd->atl_queue); |
| 2166 | |
| 2167 | seq_printf(s, "periodic size= %d\n", PERIODIC_SIZE); |
| 2168 | |
| 2169 | list_for_each_entry(ep, &isp1362_hcd->periodic, schedule) { |
| 2170 | seq_printf(s, "branch:%2d load:%3d PTD[%d] $%04x:\n", ep->branch, |
| 2171 | isp1362_hcd->load[ep->branch], ep->ptd_index, ep->ptd_offset); |
| 2172 | |
| 2173 | seq_printf(s, " %d/%p (%sdev%d ep%d%s max %d)\n", |
| 2174 | ep->interval, ep, |
| 2175 | (ep->udev->speed == USB_SPEED_FULL) ? "" : "ls ", |
| 2176 | ep->udev->devnum, ep->epnum, |
| 2177 | (ep->epnum == 0) ? "" : |
| 2178 | ((ep->nextpid == USB_PID_IN) ? |
| 2179 | "in" : "out"), ep->maxpacket); |
| 2180 | } |
| 2181 | dump_ptd_queue(&isp1362_hcd->intl_queue); |
| 2182 | |
| 2183 | seq_printf(s, "ISO:\n"); |
| 2184 | |
| 2185 | list_for_each_entry(ep, &isp1362_hcd->isoc, schedule) { |
| 2186 | seq_printf(s, " %d/%p (%sdev%d ep%d%s max %d)\n", |
| 2187 | ep->interval, ep, |
| 2188 | (ep->udev->speed == USB_SPEED_FULL) ? "" : "ls ", |
| 2189 | ep->udev->devnum, ep->epnum, |
| 2190 | (ep->epnum == 0) ? "" : |
| 2191 | ((ep->nextpid == USB_PID_IN) ? |
| 2192 | "in" : "out"), ep->maxpacket); |
| 2193 | } |
| 2194 | |
| 2195 | spin_unlock_irq(&isp1362_hcd->lock); |
| 2196 | seq_printf(s, "\n"); |
| 2197 | |
| 2198 | return 0; |
| 2199 | } |
| 2200 | |
| 2201 | static int proc_isp1362_open(struct inode *inode, struct file *file) |
| 2202 | { |
| 2203 | return single_open(file, proc_isp1362_show, PDE(inode)->data); |
| 2204 | } |
| 2205 | |
| 2206 | static const struct file_operations proc_ops = { |
| 2207 | .open = proc_isp1362_open, |
| 2208 | .read = seq_read, |
| 2209 | .llseek = seq_lseek, |
| 2210 | .release = single_release, |
| 2211 | }; |
| 2212 | |
| 2213 | /* expect just one isp1362_hcd per system */ |
| 2214 | static const char proc_filename[] = "driver/isp1362"; |
| 2215 | |
| 2216 | static void create_debug_file(struct isp1362_hcd *isp1362_hcd) |
| 2217 | { |
| 2218 | struct proc_dir_entry *pde; |
| 2219 | |
| 2220 | pde = create_proc_entry(proc_filename, 0, NULL); |
| 2221 | if (pde == NULL) { |
| 2222 | pr_warning("%s: Failed to create debug file '%s'\n", __func__, proc_filename); |
| 2223 | return; |
| 2224 | } |
| 2225 | |
| 2226 | pde->proc_fops = &proc_ops; |
| 2227 | pde->data = isp1362_hcd; |
| 2228 | isp1362_hcd->pde = pde; |
| 2229 | } |
| 2230 | |
| 2231 | static void remove_debug_file(struct isp1362_hcd *isp1362_hcd) |
| 2232 | { |
| 2233 | if (isp1362_hcd->pde) |
| 2234 | remove_proc_entry(proc_filename, 0); |
| 2235 | } |
| 2236 | |
| 2237 | #endif |
| 2238 | |
| 2239 | /*-------------------------------------------------------------------------*/ |
| 2240 | |
| 2241 | static void isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd) |
| 2242 | { |
| 2243 | int tmp = 20; |
| 2244 | unsigned long flags; |
| 2245 | |
| 2246 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 2247 | |
| 2248 | isp1362_write_reg16(isp1362_hcd, HCSWRES, HCSWRES_MAGIC); |
| 2249 | isp1362_write_reg32(isp1362_hcd, HCCMDSTAT, OHCI_HCR); |
| 2250 | while (--tmp) { |
| 2251 | mdelay(1); |
| 2252 | if (!(isp1362_read_reg32(isp1362_hcd, HCCMDSTAT) & OHCI_HCR)) |
| 2253 | break; |
| 2254 | } |
| 2255 | if (!tmp) |
| 2256 | pr_err("Software reset timeout\n"); |
| 2257 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 2258 | } |
| 2259 | |
| 2260 | static int isp1362_mem_config(struct usb_hcd *hcd) |
| 2261 | { |
| 2262 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 2263 | unsigned long flags; |
| 2264 | u32 total; |
| 2265 | u16 istl_size = ISP1362_ISTL_BUFSIZE; |
| 2266 | u16 intl_blksize = ISP1362_INTL_BLKSIZE + PTD_HEADER_SIZE; |
| 2267 | u16 intl_size = ISP1362_INTL_BUFFERS * intl_blksize; |
| 2268 | u16 atl_blksize = ISP1362_ATL_BLKSIZE + PTD_HEADER_SIZE; |
| 2269 | u16 atl_buffers = (ISP1362_BUF_SIZE - (istl_size + intl_size)) / atl_blksize; |
| 2270 | u16 atl_size; |
| 2271 | int i; |
| 2272 | |
| 2273 | WARN_ON(istl_size & 3); |
| 2274 | WARN_ON(atl_blksize & 3); |
| 2275 | WARN_ON(intl_blksize & 3); |
| 2276 | WARN_ON(atl_blksize < PTD_HEADER_SIZE); |
| 2277 | WARN_ON(intl_blksize < PTD_HEADER_SIZE); |
| 2278 | |
| 2279 | BUG_ON((unsigned)ISP1362_INTL_BUFFERS > 32); |
| 2280 | if (atl_buffers > 32) |
| 2281 | atl_buffers = 32; |
| 2282 | atl_size = atl_buffers * atl_blksize; |
| 2283 | total = atl_size + intl_size + istl_size; |
| 2284 | dev_info(hcd->self.controller, "ISP1362 Memory usage:\n"); |
| 2285 | dev_info(hcd->self.controller, " ISTL: 2 * %4d: %4d @ $%04x:$%04x\n", |
| 2286 | istl_size / 2, istl_size, 0, istl_size / 2); |
Mike Frysinger | b0a9cf2 | 2009-10-07 04:29:31 -0400 | [diff] [blame] | 2287 | dev_info(hcd->self.controller, " INTL: %4d * (%3lu+8): %4d @ $%04x\n", |
Lothar Wassmann | a9d4309 | 2009-07-16 20:51:21 -0400 | [diff] [blame] | 2288 | ISP1362_INTL_BUFFERS, intl_blksize - PTD_HEADER_SIZE, |
| 2289 | intl_size, istl_size); |
Mike Frysinger | b0a9cf2 | 2009-10-07 04:29:31 -0400 | [diff] [blame] | 2290 | dev_info(hcd->self.controller, " ATL : %4d * (%3lu+8): %4d @ $%04x\n", |
Lothar Wassmann | a9d4309 | 2009-07-16 20:51:21 -0400 | [diff] [blame] | 2291 | atl_buffers, atl_blksize - PTD_HEADER_SIZE, |
| 2292 | atl_size, istl_size + intl_size); |
| 2293 | dev_info(hcd->self.controller, " USED/FREE: %4d %4d\n", total, |
| 2294 | ISP1362_BUF_SIZE - total); |
| 2295 | |
| 2296 | if (total > ISP1362_BUF_SIZE) { |
| 2297 | dev_err(hcd->self.controller, "%s: Memory requested: %d, available %d\n", |
| 2298 | __func__, total, ISP1362_BUF_SIZE); |
| 2299 | return -ENOMEM; |
| 2300 | } |
| 2301 | |
| 2302 | total = istl_size + intl_size + atl_size; |
| 2303 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 2304 | |
| 2305 | for (i = 0; i < 2; i++) { |
| 2306 | isp1362_hcd->istl_queue[i].buf_start = i * istl_size / 2, |
| 2307 | isp1362_hcd->istl_queue[i].buf_size = istl_size / 2; |
| 2308 | isp1362_hcd->istl_queue[i].blk_size = 4; |
| 2309 | INIT_LIST_HEAD(&isp1362_hcd->istl_queue[i].active); |
| 2310 | snprintf(isp1362_hcd->istl_queue[i].name, |
| 2311 | sizeof(isp1362_hcd->istl_queue[i].name), "ISTL%d", i); |
| 2312 | DBG(3, "%s: %5s buf $%04x %d\n", __func__, |
| 2313 | isp1362_hcd->istl_queue[i].name, |
| 2314 | isp1362_hcd->istl_queue[i].buf_start, |
| 2315 | isp1362_hcd->istl_queue[i].buf_size); |
| 2316 | } |
| 2317 | isp1362_write_reg16(isp1362_hcd, HCISTLBUFSZ, istl_size / 2); |
| 2318 | |
| 2319 | isp1362_hcd->intl_queue.buf_start = istl_size; |
| 2320 | isp1362_hcd->intl_queue.buf_size = intl_size; |
| 2321 | isp1362_hcd->intl_queue.buf_count = ISP1362_INTL_BUFFERS; |
| 2322 | isp1362_hcd->intl_queue.blk_size = intl_blksize; |
| 2323 | isp1362_hcd->intl_queue.buf_avail = isp1362_hcd->intl_queue.buf_count; |
| 2324 | isp1362_hcd->intl_queue.skip_map = ~0; |
| 2325 | INIT_LIST_HEAD(&isp1362_hcd->intl_queue.active); |
| 2326 | |
| 2327 | isp1362_write_reg16(isp1362_hcd, HCINTLBUFSZ, |
| 2328 | isp1362_hcd->intl_queue.buf_size); |
| 2329 | isp1362_write_reg16(isp1362_hcd, HCINTLBLKSZ, |
| 2330 | isp1362_hcd->intl_queue.blk_size - PTD_HEADER_SIZE); |
| 2331 | isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, ~0); |
| 2332 | isp1362_write_reg32(isp1362_hcd, HCINTLLAST, |
| 2333 | 1 << (ISP1362_INTL_BUFFERS - 1)); |
| 2334 | |
| 2335 | isp1362_hcd->atl_queue.buf_start = istl_size + intl_size; |
| 2336 | isp1362_hcd->atl_queue.buf_size = atl_size; |
| 2337 | isp1362_hcd->atl_queue.buf_count = atl_buffers; |
| 2338 | isp1362_hcd->atl_queue.blk_size = atl_blksize; |
| 2339 | isp1362_hcd->atl_queue.buf_avail = isp1362_hcd->atl_queue.buf_count; |
| 2340 | isp1362_hcd->atl_queue.skip_map = ~0; |
| 2341 | INIT_LIST_HEAD(&isp1362_hcd->atl_queue.active); |
| 2342 | |
| 2343 | isp1362_write_reg16(isp1362_hcd, HCATLBUFSZ, |
| 2344 | isp1362_hcd->atl_queue.buf_size); |
| 2345 | isp1362_write_reg16(isp1362_hcd, HCATLBLKSZ, |
| 2346 | isp1362_hcd->atl_queue.blk_size - PTD_HEADER_SIZE); |
| 2347 | isp1362_write_reg32(isp1362_hcd, HCATLSKIP, ~0); |
| 2348 | isp1362_write_reg32(isp1362_hcd, HCATLLAST, |
| 2349 | 1 << (atl_buffers - 1)); |
| 2350 | |
| 2351 | snprintf(isp1362_hcd->atl_queue.name, |
| 2352 | sizeof(isp1362_hcd->atl_queue.name), "ATL"); |
| 2353 | snprintf(isp1362_hcd->intl_queue.name, |
| 2354 | sizeof(isp1362_hcd->intl_queue.name), "INTL"); |
| 2355 | DBG(3, "%s: %5s buf $%04x %2d * %4d = %4d\n", __func__, |
| 2356 | isp1362_hcd->intl_queue.name, |
| 2357 | isp1362_hcd->intl_queue.buf_start, |
| 2358 | ISP1362_INTL_BUFFERS, isp1362_hcd->intl_queue.blk_size, |
| 2359 | isp1362_hcd->intl_queue.buf_size); |
| 2360 | DBG(3, "%s: %5s buf $%04x %2d * %4d = %4d\n", __func__, |
| 2361 | isp1362_hcd->atl_queue.name, |
| 2362 | isp1362_hcd->atl_queue.buf_start, |
| 2363 | atl_buffers, isp1362_hcd->atl_queue.blk_size, |
| 2364 | isp1362_hcd->atl_queue.buf_size); |
| 2365 | |
| 2366 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 2367 | |
| 2368 | return 0; |
| 2369 | } |
| 2370 | |
| 2371 | static int isp1362_hc_reset(struct usb_hcd *hcd) |
| 2372 | { |
| 2373 | int ret = 0; |
| 2374 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 2375 | unsigned long t; |
| 2376 | unsigned long timeout = 100; |
| 2377 | unsigned long flags; |
| 2378 | int clkrdy = 0; |
| 2379 | |
| 2380 | pr_info("%s:\n", __func__); |
| 2381 | |
| 2382 | if (isp1362_hcd->board && isp1362_hcd->board->reset) { |
| 2383 | isp1362_hcd->board->reset(hcd->self.controller, 1); |
| 2384 | msleep(20); |
| 2385 | if (isp1362_hcd->board->clock) |
| 2386 | isp1362_hcd->board->clock(hcd->self.controller, 1); |
| 2387 | isp1362_hcd->board->reset(hcd->self.controller, 0); |
| 2388 | } else |
| 2389 | isp1362_sw_reset(isp1362_hcd); |
| 2390 | |
| 2391 | /* chip has been reset. First we need to see a clock */ |
| 2392 | t = jiffies + msecs_to_jiffies(timeout); |
| 2393 | while (!clkrdy && time_before_eq(jiffies, t)) { |
| 2394 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 2395 | clkrdy = isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_CLKRDY; |
| 2396 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 2397 | if (!clkrdy) |
| 2398 | msleep(4); |
| 2399 | } |
| 2400 | |
| 2401 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 2402 | isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_CLKRDY); |
| 2403 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 2404 | if (!clkrdy) { |
| 2405 | pr_err("Clock not ready after %lums\n", timeout); |
| 2406 | ret = -ENODEV; |
| 2407 | } |
| 2408 | return ret; |
| 2409 | } |
| 2410 | |
| 2411 | static void isp1362_hc_stop(struct usb_hcd *hcd) |
| 2412 | { |
| 2413 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 2414 | unsigned long flags; |
| 2415 | u32 tmp; |
| 2416 | |
| 2417 | pr_info("%s:\n", __func__); |
| 2418 | |
| 2419 | del_timer_sync(&hcd->rh_timer); |
| 2420 | |
| 2421 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 2422 | |
| 2423 | isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); |
| 2424 | |
| 2425 | /* Switch off power for all ports */ |
| 2426 | tmp = isp1362_read_reg32(isp1362_hcd, HCRHDESCA); |
| 2427 | tmp &= ~(RH_A_NPS | RH_A_PSM); |
| 2428 | isp1362_write_reg32(isp1362_hcd, HCRHDESCA, tmp); |
| 2429 | isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPS); |
| 2430 | |
| 2431 | /* Reset the chip */ |
| 2432 | if (isp1362_hcd->board && isp1362_hcd->board->reset) |
| 2433 | isp1362_hcd->board->reset(hcd->self.controller, 1); |
| 2434 | else |
| 2435 | isp1362_sw_reset(isp1362_hcd); |
| 2436 | |
| 2437 | if (isp1362_hcd->board && isp1362_hcd->board->clock) |
| 2438 | isp1362_hcd->board->clock(hcd->self.controller, 0); |
| 2439 | |
| 2440 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 2441 | } |
| 2442 | |
| 2443 | #ifdef CHIP_BUFFER_TEST |
| 2444 | static int isp1362_chip_test(struct isp1362_hcd *isp1362_hcd) |
| 2445 | { |
| 2446 | int ret = 0; |
| 2447 | u16 *ref; |
| 2448 | unsigned long flags; |
| 2449 | |
| 2450 | ref = kmalloc(2 * ISP1362_BUF_SIZE, GFP_KERNEL); |
| 2451 | if (ref) { |
| 2452 | int offset; |
| 2453 | u16 *tst = &ref[ISP1362_BUF_SIZE / 2]; |
| 2454 | |
| 2455 | for (offset = 0; offset < ISP1362_BUF_SIZE / 2; offset++) { |
| 2456 | ref[offset] = ~offset; |
| 2457 | tst[offset] = offset; |
| 2458 | } |
| 2459 | |
| 2460 | for (offset = 0; offset < 4; offset++) { |
| 2461 | int j; |
| 2462 | |
| 2463 | for (j = 0; j < 8; j++) { |
| 2464 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 2465 | isp1362_write_buffer(isp1362_hcd, (u8 *)ref + offset, 0, j); |
| 2466 | isp1362_read_buffer(isp1362_hcd, (u8 *)tst + offset, 0, j); |
| 2467 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 2468 | |
| 2469 | if (memcmp(ref, tst, j)) { |
| 2470 | ret = -ENODEV; |
| 2471 | pr_err("%s: memory check with %d byte offset %d failed\n", |
| 2472 | __func__, j, offset); |
| 2473 | dump_data((u8 *)ref + offset, j); |
| 2474 | dump_data((u8 *)tst + offset, j); |
| 2475 | } |
| 2476 | } |
| 2477 | } |
| 2478 | |
| 2479 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 2480 | isp1362_write_buffer(isp1362_hcd, ref, 0, ISP1362_BUF_SIZE); |
| 2481 | isp1362_read_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); |
| 2482 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 2483 | |
| 2484 | if (memcmp(ref, tst, ISP1362_BUF_SIZE)) { |
| 2485 | ret = -ENODEV; |
| 2486 | pr_err("%s: memory check failed\n", __func__); |
| 2487 | dump_data((u8 *)tst, ISP1362_BUF_SIZE / 2); |
| 2488 | } |
| 2489 | |
| 2490 | for (offset = 0; offset < 256; offset++) { |
| 2491 | int test_size = 0; |
| 2492 | |
| 2493 | yield(); |
| 2494 | |
| 2495 | memset(tst, 0, ISP1362_BUF_SIZE); |
| 2496 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 2497 | isp1362_write_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); |
| 2498 | isp1362_read_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); |
| 2499 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 2500 | if (memcmp(tst, tst + (ISP1362_BUF_SIZE / (2 * sizeof(*tst))), |
| 2501 | ISP1362_BUF_SIZE / 2)) { |
| 2502 | pr_err("%s: Failed to clear buffer\n", __func__); |
| 2503 | dump_data((u8 *)tst, ISP1362_BUF_SIZE); |
| 2504 | break; |
| 2505 | } |
| 2506 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 2507 | isp1362_write_buffer(isp1362_hcd, ref, offset * 2, PTD_HEADER_SIZE); |
| 2508 | isp1362_write_buffer(isp1362_hcd, ref + PTD_HEADER_SIZE / sizeof(*ref), |
| 2509 | offset * 2 + PTD_HEADER_SIZE, test_size); |
| 2510 | isp1362_read_buffer(isp1362_hcd, tst, offset * 2, |
| 2511 | PTD_HEADER_SIZE + test_size); |
| 2512 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 2513 | if (memcmp(ref, tst, PTD_HEADER_SIZE + test_size)) { |
| 2514 | dump_data(((u8 *)ref) + offset, PTD_HEADER_SIZE + test_size); |
| 2515 | dump_data((u8 *)tst, PTD_HEADER_SIZE + test_size); |
| 2516 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 2517 | isp1362_read_buffer(isp1362_hcd, tst, offset * 2, |
| 2518 | PTD_HEADER_SIZE + test_size); |
| 2519 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 2520 | if (memcmp(ref, tst, PTD_HEADER_SIZE + test_size)) { |
| 2521 | ret = -ENODEV; |
| 2522 | pr_err("%s: memory check with offset %02x failed\n", |
| 2523 | __func__, offset); |
| 2524 | break; |
| 2525 | } |
| 2526 | pr_warning("%s: memory check with offset %02x ok after second read\n", |
| 2527 | __func__, offset); |
| 2528 | } |
| 2529 | } |
| 2530 | kfree(ref); |
| 2531 | } |
| 2532 | return ret; |
| 2533 | } |
| 2534 | #endif |
| 2535 | |
| 2536 | static int isp1362_hc_start(struct usb_hcd *hcd) |
| 2537 | { |
| 2538 | int ret; |
| 2539 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 2540 | struct isp1362_platform_data *board = isp1362_hcd->board; |
| 2541 | u16 hwcfg; |
| 2542 | u16 chipid; |
| 2543 | unsigned long flags; |
| 2544 | |
| 2545 | pr_info("%s:\n", __func__); |
| 2546 | |
| 2547 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 2548 | chipid = isp1362_read_reg16(isp1362_hcd, HCCHIPID); |
| 2549 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 2550 | |
| 2551 | if ((chipid & HCCHIPID_MASK) != HCCHIPID_MAGIC) { |
| 2552 | pr_err("%s: Invalid chip ID %04x\n", __func__, chipid); |
| 2553 | return -ENODEV; |
| 2554 | } |
| 2555 | |
| 2556 | #ifdef CHIP_BUFFER_TEST |
| 2557 | ret = isp1362_chip_test(isp1362_hcd); |
| 2558 | if (ret) |
| 2559 | return -ENODEV; |
| 2560 | #endif |
| 2561 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 2562 | /* clear interrupt status and disable all interrupt sources */ |
| 2563 | isp1362_write_reg16(isp1362_hcd, HCuPINT, 0xff); |
| 2564 | isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); |
| 2565 | |
| 2566 | /* HW conf */ |
| 2567 | hwcfg = HCHWCFG_INT_ENABLE | HCHWCFG_DBWIDTH(1); |
| 2568 | if (board->sel15Kres) |
| 2569 | hwcfg |= HCHWCFG_PULLDOWN_DS2 | |
Ken MacLeod | 7949f4e | 2009-08-06 14:18:27 -0500 | [diff] [blame] | 2570 | ((MAX_ROOT_PORTS > 1) ? HCHWCFG_PULLDOWN_DS1 : 0); |
Lothar Wassmann | a9d4309 | 2009-07-16 20:51:21 -0400 | [diff] [blame] | 2571 | if (board->clknotstop) |
| 2572 | hwcfg |= HCHWCFG_CLKNOTSTOP; |
| 2573 | if (board->oc_enable) |
| 2574 | hwcfg |= HCHWCFG_ANALOG_OC; |
| 2575 | if (board->int_act_high) |
| 2576 | hwcfg |= HCHWCFG_INT_POL; |
| 2577 | if (board->int_edge_triggered) |
| 2578 | hwcfg |= HCHWCFG_INT_TRIGGER; |
| 2579 | if (board->dreq_act_high) |
| 2580 | hwcfg |= HCHWCFG_DREQ_POL; |
| 2581 | if (board->dack_act_high) |
| 2582 | hwcfg |= HCHWCFG_DACK_POL; |
| 2583 | isp1362_write_reg16(isp1362_hcd, HCHWCFG, hwcfg); |
| 2584 | isp1362_show_reg(isp1362_hcd, HCHWCFG); |
| 2585 | isp1362_write_reg16(isp1362_hcd, HCDMACFG, 0); |
| 2586 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 2587 | |
| 2588 | ret = isp1362_mem_config(hcd); |
| 2589 | if (ret) |
| 2590 | return ret; |
| 2591 | |
| 2592 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 2593 | |
| 2594 | /* Root hub conf */ |
| 2595 | isp1362_hcd->rhdesca = 0; |
| 2596 | if (board->no_power_switching) |
| 2597 | isp1362_hcd->rhdesca |= RH_A_NPS; |
| 2598 | if (board->power_switching_mode) |
| 2599 | isp1362_hcd->rhdesca |= RH_A_PSM; |
| 2600 | if (board->potpg) |
| 2601 | isp1362_hcd->rhdesca |= (board->potpg << 24) & RH_A_POTPGT; |
| 2602 | else |
| 2603 | isp1362_hcd->rhdesca |= (25 << 24) & RH_A_POTPGT; |
| 2604 | |
| 2605 | isp1362_write_reg32(isp1362_hcd, HCRHDESCA, isp1362_hcd->rhdesca & ~RH_A_OCPM); |
| 2606 | isp1362_write_reg32(isp1362_hcd, HCRHDESCA, isp1362_hcd->rhdesca | RH_A_OCPM); |
| 2607 | isp1362_hcd->rhdesca = isp1362_read_reg32(isp1362_hcd, HCRHDESCA); |
| 2608 | |
| 2609 | isp1362_hcd->rhdescb = RH_B_PPCM; |
| 2610 | isp1362_write_reg32(isp1362_hcd, HCRHDESCB, isp1362_hcd->rhdescb); |
| 2611 | isp1362_hcd->rhdescb = isp1362_read_reg32(isp1362_hcd, HCRHDESCB); |
| 2612 | |
| 2613 | isp1362_read_reg32(isp1362_hcd, HCFMINTVL); |
| 2614 | isp1362_write_reg32(isp1362_hcd, HCFMINTVL, (FSMP(FI) << 16) | FI); |
| 2615 | isp1362_write_reg32(isp1362_hcd, HCLSTHRESH, LSTHRESH); |
| 2616 | |
| 2617 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 2618 | |
| 2619 | isp1362_hcd->hc_control = OHCI_USB_OPER; |
| 2620 | hcd->state = HC_STATE_RUNNING; |
| 2621 | |
| 2622 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 2623 | /* Set up interrupts */ |
| 2624 | isp1362_hcd->intenb = OHCI_INTR_MIE | OHCI_INTR_RHSC | OHCI_INTR_UE; |
| 2625 | isp1362_hcd->intenb |= OHCI_INTR_RD; |
| 2626 | isp1362_hcd->irqenb = HCuPINT_OPR | HCuPINT_SUSP; |
| 2627 | isp1362_write_reg32(isp1362_hcd, HCINTENB, isp1362_hcd->intenb); |
| 2628 | isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); |
| 2629 | |
| 2630 | /* Go operational */ |
| 2631 | isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); |
| 2632 | /* enable global power */ |
| 2633 | isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPSC | RH_HS_DRWE); |
| 2634 | |
| 2635 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 2636 | |
| 2637 | return 0; |
| 2638 | } |
| 2639 | |
| 2640 | /*-------------------------------------------------------------------------*/ |
| 2641 | |
| 2642 | static struct hc_driver isp1362_hc_driver = { |
| 2643 | .description = hcd_name, |
| 2644 | .product_desc = "ISP1362 Host Controller", |
| 2645 | .hcd_priv_size = sizeof(struct isp1362_hcd), |
| 2646 | |
| 2647 | .irq = isp1362_irq, |
| 2648 | .flags = HCD_USB11 | HCD_MEMORY, |
| 2649 | |
| 2650 | .reset = isp1362_hc_reset, |
| 2651 | .start = isp1362_hc_start, |
| 2652 | .stop = isp1362_hc_stop, |
| 2653 | |
| 2654 | .urb_enqueue = isp1362_urb_enqueue, |
| 2655 | .urb_dequeue = isp1362_urb_dequeue, |
| 2656 | .endpoint_disable = isp1362_endpoint_disable, |
| 2657 | |
| 2658 | .get_frame_number = isp1362_get_frame, |
| 2659 | |
| 2660 | .hub_status_data = isp1362_hub_status_data, |
| 2661 | .hub_control = isp1362_hub_control, |
| 2662 | .bus_suspend = isp1362_bus_suspend, |
| 2663 | .bus_resume = isp1362_bus_resume, |
| 2664 | }; |
| 2665 | |
| 2666 | /*-------------------------------------------------------------------------*/ |
| 2667 | |
| 2668 | #define resource_len(r) (((r)->end - (r)->start) + 1) |
| 2669 | |
| 2670 | static int __devexit isp1362_remove(struct platform_device *pdev) |
| 2671 | { |
| 2672 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 2673 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 2674 | struct resource *res; |
| 2675 | |
| 2676 | remove_debug_file(isp1362_hcd); |
| 2677 | DBG(0, "%s: Removing HCD\n", __func__); |
| 2678 | usb_remove_hcd(hcd); |
| 2679 | |
Mike Frysinger | b0a9cf2 | 2009-10-07 04:29:31 -0400 | [diff] [blame] | 2680 | DBG(0, "%s: Unmapping data_reg @ %p\n", __func__, |
| 2681 | isp1362_hcd->data_reg); |
Lothar Wassmann | a9d4309 | 2009-07-16 20:51:21 -0400 | [diff] [blame] | 2682 | iounmap(isp1362_hcd->data_reg); |
| 2683 | |
Mike Frysinger | b0a9cf2 | 2009-10-07 04:29:31 -0400 | [diff] [blame] | 2684 | DBG(0, "%s: Unmapping addr_reg @ %p\n", __func__, |
| 2685 | isp1362_hcd->addr_reg); |
Lothar Wassmann | a9d4309 | 2009-07-16 20:51:21 -0400 | [diff] [blame] | 2686 | iounmap(isp1362_hcd->addr_reg); |
| 2687 | |
| 2688 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| 2689 | DBG(0, "%s: release mem_region: %08lx\n", __func__, (long unsigned int)res->start); |
| 2690 | if (res) |
| 2691 | release_mem_region(res->start, resource_len(res)); |
| 2692 | |
| 2693 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 2694 | DBG(0, "%s: release mem_region: %08lx\n", __func__, (long unsigned int)res->start); |
| 2695 | if (res) |
| 2696 | release_mem_region(res->start, resource_len(res)); |
| 2697 | |
| 2698 | DBG(0, "%s: put_hcd\n", __func__); |
| 2699 | usb_put_hcd(hcd); |
| 2700 | DBG(0, "%s: Done\n", __func__); |
| 2701 | |
| 2702 | return 0; |
| 2703 | } |
| 2704 | |
| 2705 | static int __init isp1362_probe(struct platform_device *pdev) |
| 2706 | { |
| 2707 | struct usb_hcd *hcd; |
| 2708 | struct isp1362_hcd *isp1362_hcd; |
| 2709 | struct resource *addr, *data; |
| 2710 | void __iomem *addr_reg; |
| 2711 | void __iomem *data_reg; |
| 2712 | int irq; |
| 2713 | int retval = 0; |
| 2714 | |
| 2715 | /* basic sanity checks first. board-specific init logic should |
| 2716 | * have initialized this the three resources and probably board |
| 2717 | * specific platform_data. we don't probe for IRQs, and do only |
| 2718 | * minimal sanity checking. |
| 2719 | */ |
| 2720 | if (pdev->num_resources < 3) { |
| 2721 | retval = -ENODEV; |
| 2722 | goto err1; |
| 2723 | } |
| 2724 | |
| 2725 | data = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 2726 | addr = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| 2727 | irq = platform_get_irq(pdev, 0); |
| 2728 | if (!addr || !data || irq < 0) { |
| 2729 | retval = -ENODEV; |
| 2730 | goto err1; |
| 2731 | } |
| 2732 | |
| 2733 | #ifdef CONFIG_USB_HCD_DMA |
| 2734 | if (pdev->dev.dma_mask) { |
| 2735 | struct resource *dma_res = platform_get_resource(pdev, IORESOURCE_MEM, 2); |
| 2736 | |
| 2737 | if (!dma_res) { |
| 2738 | retval = -ENODEV; |
| 2739 | goto err1; |
| 2740 | } |
| 2741 | isp1362_hcd->data_dma = dma_res->start; |
| 2742 | isp1362_hcd->max_dma_size = resource_len(dma_res); |
| 2743 | } |
| 2744 | #else |
| 2745 | if (pdev->dev.dma_mask) { |
| 2746 | DBG(1, "won't do DMA"); |
| 2747 | retval = -ENODEV; |
| 2748 | goto err1; |
| 2749 | } |
| 2750 | #endif |
| 2751 | |
| 2752 | if (!request_mem_region(addr->start, resource_len(addr), hcd_name)) { |
| 2753 | retval = -EBUSY; |
| 2754 | goto err1; |
| 2755 | } |
| 2756 | addr_reg = ioremap(addr->start, resource_len(addr)); |
| 2757 | if (addr_reg == NULL) { |
| 2758 | retval = -ENOMEM; |
| 2759 | goto err2; |
| 2760 | } |
| 2761 | |
| 2762 | if (!request_mem_region(data->start, resource_len(data), hcd_name)) { |
| 2763 | retval = -EBUSY; |
| 2764 | goto err3; |
| 2765 | } |
| 2766 | data_reg = ioremap(data->start, resource_len(data)); |
| 2767 | if (data_reg == NULL) { |
| 2768 | retval = -ENOMEM; |
| 2769 | goto err4; |
| 2770 | } |
| 2771 | |
| 2772 | /* allocate and initialize hcd */ |
| 2773 | hcd = usb_create_hcd(&isp1362_hc_driver, &pdev->dev, dev_name(&pdev->dev)); |
| 2774 | if (!hcd) { |
| 2775 | retval = -ENOMEM; |
| 2776 | goto err5; |
| 2777 | } |
| 2778 | hcd->rsrc_start = data->start; |
| 2779 | isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 2780 | isp1362_hcd->data_reg = data_reg; |
| 2781 | isp1362_hcd->addr_reg = addr_reg; |
| 2782 | |
| 2783 | isp1362_hcd->next_statechange = jiffies; |
| 2784 | spin_lock_init(&isp1362_hcd->lock); |
| 2785 | INIT_LIST_HEAD(&isp1362_hcd->async); |
| 2786 | INIT_LIST_HEAD(&isp1362_hcd->periodic); |
| 2787 | INIT_LIST_HEAD(&isp1362_hcd->isoc); |
| 2788 | INIT_LIST_HEAD(&isp1362_hcd->remove_list); |
| 2789 | isp1362_hcd->board = pdev->dev.platform_data; |
| 2790 | #if USE_PLATFORM_DELAY |
| 2791 | if (!isp1362_hcd->board->delay) { |
| 2792 | dev_err(hcd->self.controller, "No platform delay function given\n"); |
| 2793 | retval = -ENODEV; |
| 2794 | goto err6; |
| 2795 | } |
| 2796 | #endif |
| 2797 | |
| 2798 | #ifdef CONFIG_ARM |
| 2799 | if (isp1362_hcd->board) |
| 2800 | set_irq_type(irq, isp1362_hcd->board->int_act_high ? IRQT_RISING : IRQT_FALLING); |
| 2801 | #endif |
| 2802 | |
| 2803 | retval = usb_add_hcd(hcd, irq, IRQF_TRIGGER_LOW | IRQF_DISABLED | IRQF_SHARED); |
| 2804 | if (retval != 0) |
| 2805 | goto err6; |
| 2806 | pr_info("%s, irq %d\n", hcd->product_desc, irq); |
| 2807 | |
| 2808 | create_debug_file(isp1362_hcd); |
| 2809 | |
| 2810 | return 0; |
| 2811 | |
| 2812 | err6: |
Mike Frysinger | b0a9cf2 | 2009-10-07 04:29:31 -0400 | [diff] [blame] | 2813 | DBG(0, "%s: Freeing dev %p\n", __func__, isp1362_hcd); |
Lothar Wassmann | a9d4309 | 2009-07-16 20:51:21 -0400 | [diff] [blame] | 2814 | usb_put_hcd(hcd); |
| 2815 | err5: |
Mike Frysinger | b0a9cf2 | 2009-10-07 04:29:31 -0400 | [diff] [blame] | 2816 | DBG(0, "%s: Unmapping data_reg @ %p\n", __func__, data_reg); |
Lothar Wassmann | a9d4309 | 2009-07-16 20:51:21 -0400 | [diff] [blame] | 2817 | iounmap(data_reg); |
| 2818 | err4: |
| 2819 | DBG(0, "%s: Releasing mem region %08lx\n", __func__, (long unsigned int)data->start); |
| 2820 | release_mem_region(data->start, resource_len(data)); |
| 2821 | err3: |
Mike Frysinger | b0a9cf2 | 2009-10-07 04:29:31 -0400 | [diff] [blame] | 2822 | DBG(0, "%s: Unmapping addr_reg @ %p\n", __func__, addr_reg); |
Lothar Wassmann | a9d4309 | 2009-07-16 20:51:21 -0400 | [diff] [blame] | 2823 | iounmap(addr_reg); |
| 2824 | err2: |
| 2825 | DBG(0, "%s: Releasing mem region %08lx\n", __func__, (long unsigned int)addr->start); |
| 2826 | release_mem_region(addr->start, resource_len(addr)); |
| 2827 | err1: |
| 2828 | pr_err("%s: init error, %d\n", __func__, retval); |
| 2829 | |
| 2830 | return retval; |
| 2831 | } |
| 2832 | |
| 2833 | #ifdef CONFIG_PM |
| 2834 | static int isp1362_suspend(struct platform_device *pdev, pm_message_t state) |
| 2835 | { |
| 2836 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 2837 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 2838 | unsigned long flags; |
| 2839 | int retval = 0; |
| 2840 | |
| 2841 | DBG(0, "%s: Suspending device\n", __func__); |
| 2842 | |
| 2843 | if (state.event == PM_EVENT_FREEZE) { |
| 2844 | DBG(0, "%s: Suspending root hub\n", __func__); |
| 2845 | retval = isp1362_bus_suspend(hcd); |
| 2846 | } else { |
| 2847 | DBG(0, "%s: Suspending RH ports\n", __func__); |
| 2848 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 2849 | isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPS); |
| 2850 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 2851 | } |
| 2852 | if (retval == 0) |
| 2853 | pdev->dev.power.power_state = state; |
| 2854 | return retval; |
| 2855 | } |
| 2856 | |
| 2857 | static int isp1362_resume(struct platform_device *pdev) |
| 2858 | { |
| 2859 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 2860 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| 2861 | unsigned long flags; |
| 2862 | |
| 2863 | DBG(0, "%s: Resuming\n", __func__); |
| 2864 | |
| 2865 | if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) { |
| 2866 | DBG(0, "%s: Resume RH ports\n", __func__); |
| 2867 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| 2868 | isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPSC); |
| 2869 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| 2870 | return 0; |
| 2871 | } |
| 2872 | |
| 2873 | pdev->dev.power.power_state = PMSG_ON; |
| 2874 | |
| 2875 | return isp1362_bus_resume(isp1362_hcd_to_hcd(isp1362_hcd)); |
| 2876 | } |
| 2877 | #else |
| 2878 | #define isp1362_suspend NULL |
| 2879 | #define isp1362_resume NULL |
| 2880 | #endif |
| 2881 | |
| 2882 | static struct platform_driver isp1362_driver = { |
| 2883 | .probe = isp1362_probe, |
| 2884 | .remove = __devexit_p(isp1362_remove), |
| 2885 | |
| 2886 | .suspend = isp1362_suspend, |
| 2887 | .resume = isp1362_resume, |
| 2888 | .driver = { |
| 2889 | .name = (char *)hcd_name, |
| 2890 | .owner = THIS_MODULE, |
| 2891 | }, |
| 2892 | }; |
| 2893 | |
| 2894 | /*-------------------------------------------------------------------------*/ |
| 2895 | |
| 2896 | static int __init isp1362_init(void) |
| 2897 | { |
| 2898 | if (usb_disabled()) |
| 2899 | return -ENODEV; |
| 2900 | pr_info("driver %s, %s\n", hcd_name, DRIVER_VERSION); |
| 2901 | return platform_driver_register(&isp1362_driver); |
| 2902 | } |
| 2903 | module_init(isp1362_init); |
| 2904 | |
| 2905 | static void __exit isp1362_cleanup(void) |
| 2906 | { |
| 2907 | platform_driver_unregister(&isp1362_driver); |
| 2908 | } |
| 2909 | module_exit(isp1362_cleanup); |