Commit | Line | Data |
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a9d43091 LW |
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> | |
a9d43091 LW |
73 | #include <linux/errno.h> |
74 | #include <linux/init.h> | |
75 | #include <linux/list.h> | |
76 | #include <linux/interrupt.h> | |
77 | #include <linux/usb.h> | |
78 | #include <linux/usb/isp1362.h> | |
27729aad | 79 | #include <linux/usb/hcd.h> |
a9d43091 LW |
80 | #include <linux/platform_device.h> |
81 | #include <linux/pm.h> | |
82 | #include <linux/io.h> | |
735e1b9a | 83 | #include <linux/bitmap.h> |
a9d43091 LW |
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 | ||
a9d43091 LW |
98 | #include "../core/usb.h" |
99 | #include "isp1362.h" | |
100 | ||
101 | ||
102 | #define DRIVER_VERSION "2005-04-04" | |
103 | #define DRIVER_DESC "ISP1362 USB Host Controller Driver" | |
104 | ||
105 | MODULE_DESCRIPTION(DRIVER_DESC); | |
106 | MODULE_LICENSE("GPL"); | |
107 | ||
108 | static const char hcd_name[] = "isp1362-hcd"; | |
109 | ||
110 | static void isp1362_hc_stop(struct usb_hcd *hcd); | |
111 | static int isp1362_hc_start(struct usb_hcd *hcd); | |
112 | ||
113 | /*-------------------------------------------------------------------------*/ | |
114 | ||
115 | /* | |
116 | * When called from the interrupthandler only isp1362_hcd->irqenb is modified, | |
117 | * since the interrupt handler will write isp1362_hcd->irqenb to HCuPINT upon | |
118 | * completion. | |
119 | * We don't need a 'disable' counterpart, since interrupts will be disabled | |
120 | * only by the interrupt handler. | |
121 | */ | |
122 | static inline void isp1362_enable_int(struct isp1362_hcd *isp1362_hcd, u16 mask) | |
123 | { | |
124 | if ((isp1362_hcd->irqenb | mask) == isp1362_hcd->irqenb) | |
125 | return; | |
126 | if (mask & ~isp1362_hcd->irqenb) | |
127 | isp1362_write_reg16(isp1362_hcd, HCuPINT, mask & ~isp1362_hcd->irqenb); | |
128 | isp1362_hcd->irqenb |= mask; | |
129 | if (isp1362_hcd->irq_active) | |
130 | return; | |
131 | isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); | |
132 | } | |
133 | ||
134 | /*-------------------------------------------------------------------------*/ | |
135 | ||
136 | static inline struct isp1362_ep_queue *get_ptd_queue(struct isp1362_hcd *isp1362_hcd, | |
137 | u16 offset) | |
138 | { | |
139 | struct isp1362_ep_queue *epq = NULL; | |
140 | ||
141 | if (offset < isp1362_hcd->istl_queue[1].buf_start) | |
142 | epq = &isp1362_hcd->istl_queue[0]; | |
143 | else if (offset < isp1362_hcd->intl_queue.buf_start) | |
144 | epq = &isp1362_hcd->istl_queue[1]; | |
145 | else if (offset < isp1362_hcd->atl_queue.buf_start) | |
146 | epq = &isp1362_hcd->intl_queue; | |
147 | else if (offset < isp1362_hcd->atl_queue.buf_start + | |
148 | isp1362_hcd->atl_queue.buf_size) | |
149 | epq = &isp1362_hcd->atl_queue; | |
150 | ||
151 | if (epq) | |
152 | DBG(1, "%s: PTD $%04x is on %s queue\n", __func__, offset, epq->name); | |
153 | else | |
154 | pr_warning("%s: invalid PTD $%04x\n", __func__, offset); | |
155 | ||
156 | return epq; | |
157 | } | |
158 | ||
159 | static inline int get_ptd_offset(struct isp1362_ep_queue *epq, u8 index) | |
160 | { | |
161 | int offset; | |
162 | ||
163 | if (index * epq->blk_size > epq->buf_size) { | |
164 | pr_warning("%s: Bad %s index %d(%d)\n", __func__, epq->name, index, | |
165 | epq->buf_size / epq->blk_size); | |
166 | return -EINVAL; | |
167 | } | |
168 | offset = epq->buf_start + index * epq->blk_size; | |
169 | DBG(3, "%s: %s PTD[%02x] # %04x\n", __func__, epq->name, index, offset); | |
170 | ||
171 | return offset; | |
172 | } | |
173 | ||
174 | /*-------------------------------------------------------------------------*/ | |
175 | ||
176 | static inline u16 max_transfer_size(struct isp1362_ep_queue *epq, size_t size, | |
177 | int mps) | |
178 | { | |
179 | u16 xfer_size = min_t(size_t, MAX_XFER_SIZE, size); | |
180 | ||
181 | xfer_size = min_t(size_t, xfer_size, epq->buf_avail * epq->blk_size - PTD_HEADER_SIZE); | |
182 | if (xfer_size < size && xfer_size % mps) | |
183 | xfer_size -= xfer_size % mps; | |
184 | ||
185 | return xfer_size; | |
186 | } | |
187 | ||
188 | static int claim_ptd_buffers(struct isp1362_ep_queue *epq, | |
189 | struct isp1362_ep *ep, u16 len) | |
190 | { | |
191 | int ptd_offset = -EINVAL; | |
a9d43091 | 192 | int num_ptds = ((len + PTD_HEADER_SIZE - 1) / epq->blk_size) + 1; |
735e1b9a | 193 | int found; |
a9d43091 LW |
194 | |
195 | BUG_ON(len > epq->buf_size); | |
196 | ||
197 | if (!epq->buf_avail) | |
198 | return -ENOMEM; | |
199 | ||
200 | if (ep->num_ptds) | |
201 | pr_err("%s: %s len %d/%d num_ptds %d buf_map %08lx skip_map %08lx\n", __func__, | |
202 | epq->name, len, epq->blk_size, num_ptds, epq->buf_map, epq->skip_map); | |
203 | BUG_ON(ep->num_ptds != 0); | |
204 | ||
735e1b9a AM |
205 | found = bitmap_find_next_zero_area(&epq->buf_map, epq->buf_count, 0, |
206 | num_ptds, 0); | |
207 | if (found >= epq->buf_count) | |
a9d43091 LW |
208 | return -EOVERFLOW; |
209 | ||
210 | DBG(1, "%s: Found %d PTDs[%d] for %d/%d byte\n", __func__, | |
211 | num_ptds, found, len, (int)(epq->blk_size - PTD_HEADER_SIZE)); | |
212 | ptd_offset = get_ptd_offset(epq, found); | |
213 | WARN_ON(ptd_offset < 0); | |
214 | ep->ptd_offset = ptd_offset; | |
215 | ep->num_ptds += num_ptds; | |
216 | epq->buf_avail -= num_ptds; | |
217 | BUG_ON(epq->buf_avail > epq->buf_count); | |
218 | ep->ptd_index = found; | |
735e1b9a | 219 | bitmap_set(&epq->buf_map, found, num_ptds); |
a9d43091 LW |
220 | DBG(1, "%s: Done %s PTD[%d] $%04x, avail %d count %d claimed %d %08lx:%08lx\n", |
221 | __func__, epq->name, ep->ptd_index, ep->ptd_offset, | |
222 | epq->buf_avail, epq->buf_count, num_ptds, epq->buf_map, epq->skip_map); | |
223 | ||
224 | return found; | |
225 | } | |
226 | ||
227 | static inline void release_ptd_buffers(struct isp1362_ep_queue *epq, struct isp1362_ep *ep) | |
228 | { | |
a9d43091 LW |
229 | int last = ep->ptd_index + ep->num_ptds; |
230 | ||
231 | if (last > epq->buf_count) | |
232 | 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", | |
233 | __func__, ep, ep->num_req, ep->length, epq->name, ep->ptd_index, | |
234 | ep->ptd_offset, ep->num_ptds, epq->buf_count, epq->buf_avail, | |
235 | epq->buf_map, epq->skip_map); | |
236 | BUG_ON(last > epq->buf_count); | |
237 | ||
04b31c77 AM |
238 | bitmap_clear(&epq->buf_map, ep->ptd_index, ep->num_ptds); |
239 | bitmap_set(&epq->skip_map, ep->ptd_index, ep->num_ptds); | |
a9d43091 LW |
240 | epq->buf_avail += ep->num_ptds; |
241 | epq->ptd_count--; | |
242 | ||
243 | BUG_ON(epq->buf_avail > epq->buf_count); | |
244 | BUG_ON(epq->ptd_count > epq->buf_count); | |
245 | ||
246 | DBG(1, "%s: Done %s PTDs $%04x released %d avail %d count %d\n", | |
247 | __func__, epq->name, | |
248 | ep->ptd_offset, ep->num_ptds, epq->buf_avail, epq->buf_count); | |
249 | DBG(1, "%s: buf_map %08lx skip_map %08lx\n", __func__, | |
250 | epq->buf_map, epq->skip_map); | |
251 | ||
252 | ep->num_ptds = 0; | |
253 | ep->ptd_offset = -EINVAL; | |
254 | ep->ptd_index = -EINVAL; | |
255 | } | |
256 | ||
257 | /*-------------------------------------------------------------------------*/ | |
258 | ||
259 | /* | |
260 | Set up PTD's. | |
261 | */ | |
262 | static void prepare_ptd(struct isp1362_hcd *isp1362_hcd, struct urb *urb, | |
263 | struct isp1362_ep *ep, struct isp1362_ep_queue *epq, | |
264 | u16 fno) | |
265 | { | |
266 | struct ptd *ptd; | |
267 | int toggle; | |
268 | int dir; | |
269 | u16 len; | |
270 | size_t buf_len = urb->transfer_buffer_length - urb->actual_length; | |
271 | ||
272 | DBG(3, "%s: %s ep %p\n", __func__, epq->name, ep); | |
273 | ||
274 | ptd = &ep->ptd; | |
275 | ||
276 | ep->data = (unsigned char *)urb->transfer_buffer + urb->actual_length; | |
277 | ||
278 | switch (ep->nextpid) { | |
279 | case USB_PID_IN: | |
280 | toggle = usb_gettoggle(urb->dev, ep->epnum, 0); | |
281 | dir = PTD_DIR_IN; | |
282 | if (usb_pipecontrol(urb->pipe)) { | |
283 | len = min_t(size_t, ep->maxpacket, buf_len); | |
284 | } else if (usb_pipeisoc(urb->pipe)) { | |
285 | len = min_t(size_t, urb->iso_frame_desc[fno].length, MAX_XFER_SIZE); | |
286 | ep->data = urb->transfer_buffer + urb->iso_frame_desc[fno].offset; | |
287 | } else | |
288 | len = max_transfer_size(epq, buf_len, ep->maxpacket); | |
289 | DBG(1, "%s: IN len %d/%d/%d from URB\n", __func__, len, ep->maxpacket, | |
290 | (int)buf_len); | |
291 | break; | |
292 | case USB_PID_OUT: | |
293 | toggle = usb_gettoggle(urb->dev, ep->epnum, 1); | |
294 | dir = PTD_DIR_OUT; | |
295 | if (usb_pipecontrol(urb->pipe)) | |
296 | len = min_t(size_t, ep->maxpacket, buf_len); | |
297 | else if (usb_pipeisoc(urb->pipe)) | |
298 | len = min_t(size_t, urb->iso_frame_desc[0].length, MAX_XFER_SIZE); | |
299 | else | |
300 | len = max_transfer_size(epq, buf_len, ep->maxpacket); | |
301 | if (len == 0) | |
302 | pr_info("%s: Sending ZERO packet: %d\n", __func__, | |
303 | urb->transfer_flags & URB_ZERO_PACKET); | |
304 | DBG(1, "%s: OUT len %d/%d/%d from URB\n", __func__, len, ep->maxpacket, | |
305 | (int)buf_len); | |
306 | break; | |
307 | case USB_PID_SETUP: | |
308 | toggle = 0; | |
309 | dir = PTD_DIR_SETUP; | |
310 | len = sizeof(struct usb_ctrlrequest); | |
311 | DBG(1, "%s: SETUP len %d\n", __func__, len); | |
312 | ep->data = urb->setup_packet; | |
313 | break; | |
314 | case USB_PID_ACK: | |
315 | toggle = 1; | |
316 | len = 0; | |
317 | dir = (urb->transfer_buffer_length && usb_pipein(urb->pipe)) ? | |
318 | PTD_DIR_OUT : PTD_DIR_IN; | |
319 | DBG(1, "%s: ACK len %d\n", __func__, len); | |
320 | break; | |
321 | default: | |
322 | toggle = dir = len = 0; | |
323 | pr_err("%s@%d: ep->nextpid %02x\n", __func__, __LINE__, ep->nextpid); | |
324 | BUG_ON(1); | |
325 | } | |
326 | ||
327 | ep->length = len; | |
328 | if (!len) | |
329 | ep->data = NULL; | |
330 | ||
331 | ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK | PTD_TOGGLE(toggle); | |
332 | ptd->mps = PTD_MPS(ep->maxpacket) | PTD_SPD(urb->dev->speed == USB_SPEED_LOW) | | |
333 | PTD_EP(ep->epnum); | |
334 | ptd->len = PTD_LEN(len) | PTD_DIR(dir); | |
335 | ptd->faddr = PTD_FA(usb_pipedevice(urb->pipe)); | |
336 | ||
337 | if (usb_pipeint(urb->pipe)) { | |
338 | ptd->faddr |= PTD_SF_INT(ep->branch); | |
339 | ptd->faddr |= PTD_PR(ep->interval ? __ffs(ep->interval) : 0); | |
340 | } | |
341 | if (usb_pipeisoc(urb->pipe)) | |
342 | ptd->faddr |= PTD_SF_ISO(fno); | |
343 | ||
344 | DBG(1, "%s: Finished\n", __func__); | |
345 | } | |
346 | ||
347 | static void isp1362_write_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, | |
348 | struct isp1362_ep_queue *epq) | |
349 | { | |
350 | struct ptd *ptd = &ep->ptd; | |
351 | int len = PTD_GET_DIR(ptd) == PTD_DIR_IN ? 0 : ep->length; | |
352 | ||
353 | _BUG_ON(ep->ptd_offset < 0); | |
354 | ||
355 | prefetch(ptd); | |
356 | isp1362_write_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE); | |
357 | if (len) | |
358 | isp1362_write_buffer(isp1362_hcd, ep->data, | |
359 | ep->ptd_offset + PTD_HEADER_SIZE, len); | |
360 | ||
361 | dump_ptd(ptd); | |
362 | dump_ptd_out_data(ptd, ep->data); | |
363 | } | |
364 | ||
365 | static void isp1362_read_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 act_len; | |
370 | ||
371 | WARN_ON(list_empty(&ep->active)); | |
372 | BUG_ON(ep->ptd_offset < 0); | |
373 | ||
374 | list_del_init(&ep->active); | |
375 | DBG(1, "%s: ep %p removed from active list %p\n", __func__, ep, &epq->active); | |
376 | ||
377 | prefetchw(ptd); | |
378 | isp1362_read_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE); | |
379 | dump_ptd(ptd); | |
380 | act_len = PTD_GET_COUNT(ptd); | |
381 | if (PTD_GET_DIR(ptd) != PTD_DIR_IN || act_len == 0) | |
382 | return; | |
383 | if (act_len > ep->length) | |
384 | pr_err("%s: ep %p PTD $%04x act_len %d ep->length %d\n", __func__, ep, | |
385 | ep->ptd_offset, act_len, ep->length); | |
386 | BUG_ON(act_len > ep->length); | |
387 | /* Only transfer the amount of data that has actually been overwritten | |
388 | * in the chip buffer. We don't want any data that doesn't belong to the | |
389 | * transfer to leak out of the chip to the callers transfer buffer! | |
390 | */ | |
391 | prefetchw(ep->data); | |
392 | isp1362_read_buffer(isp1362_hcd, ep->data, | |
393 | ep->ptd_offset + PTD_HEADER_SIZE, act_len); | |
394 | dump_ptd_in_data(ptd, ep->data); | |
395 | } | |
396 | ||
397 | /* | |
398 | * INT PTDs will stay in the chip until data is available. | |
399 | * This function will remove a PTD from the chip when the URB is dequeued. | |
400 | * Must be called with the spinlock held and IRQs disabled | |
401 | */ | |
402 | static void remove_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep) | |
403 | ||
404 | { | |
405 | int index; | |
406 | struct isp1362_ep_queue *epq; | |
407 | ||
408 | DBG(1, "%s: ep %p PTD[%d] $%04x\n", __func__, ep, ep->ptd_index, ep->ptd_offset); | |
409 | BUG_ON(ep->ptd_offset < 0); | |
410 | ||
411 | epq = get_ptd_queue(isp1362_hcd, ep->ptd_offset); | |
412 | BUG_ON(!epq); | |
413 | ||
414 | /* put ep in remove_list for cleanup */ | |
415 | WARN_ON(!list_empty(&ep->remove_list)); | |
416 | list_add_tail(&ep->remove_list, &isp1362_hcd->remove_list); | |
417 | /* let SOF interrupt handle the cleanup */ | |
418 | isp1362_enable_int(isp1362_hcd, HCuPINT_SOF); | |
419 | ||
420 | index = ep->ptd_index; | |
421 | if (index < 0) | |
422 | /* ISO queues don't have SKIP registers */ | |
423 | return; | |
424 | ||
425 | DBG(1, "%s: Disabling PTD[%02x] $%04x %08lx|%08x\n", __func__, | |
426 | index, ep->ptd_offset, epq->skip_map, 1 << index); | |
427 | ||
428 | /* prevent further processing of PTD (will be effective after next SOF) */ | |
429 | epq->skip_map |= 1 << index; | |
430 | if (epq == &isp1362_hcd->atl_queue) { | |
431 | DBG(2, "%s: ATLSKIP = %08x -> %08lx\n", __func__, | |
432 | isp1362_read_reg32(isp1362_hcd, HCATLSKIP), epq->skip_map); | |
433 | isp1362_write_reg32(isp1362_hcd, HCATLSKIP, epq->skip_map); | |
434 | if (~epq->skip_map == 0) | |
435 | isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); | |
436 | } else if (epq == &isp1362_hcd->intl_queue) { | |
437 | DBG(2, "%s: INTLSKIP = %08x -> %08lx\n", __func__, | |
438 | isp1362_read_reg32(isp1362_hcd, HCINTLSKIP), epq->skip_map); | |
439 | isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, epq->skip_map); | |
440 | if (~epq->skip_map == 0) | |
441 | isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); | |
442 | } | |
443 | } | |
444 | ||
445 | /* | |
446 | Take done or failed requests out of schedule. Give back | |
447 | processed urbs. | |
448 | */ | |
449 | static void finish_request(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, | |
450 | struct urb *urb, int status) | |
451 | __releases(isp1362_hcd->lock) | |
452 | __acquires(isp1362_hcd->lock) | |
453 | { | |
454 | urb->hcpriv = NULL; | |
455 | ep->error_count = 0; | |
456 | ||
457 | if (usb_pipecontrol(urb->pipe)) | |
458 | ep->nextpid = USB_PID_SETUP; | |
459 | ||
460 | URB_DBG("%s: req %d FA %d ep%d%s %s: len %d/%d %s stat %d\n", __func__, | |
461 | ep->num_req, usb_pipedevice(urb->pipe), | |
462 | usb_pipeendpoint(urb->pipe), | |
463 | !usb_pipein(urb->pipe) ? "out" : "in", | |
464 | usb_pipecontrol(urb->pipe) ? "ctrl" : | |
465 | usb_pipeint(urb->pipe) ? "int" : | |
466 | usb_pipebulk(urb->pipe) ? "bulk" : | |
467 | "iso", | |
468 | urb->actual_length, urb->transfer_buffer_length, | |
469 | !(urb->transfer_flags & URB_SHORT_NOT_OK) ? | |
470 | "short_ok" : "", urb->status); | |
471 | ||
472 | ||
473 | usb_hcd_unlink_urb_from_ep(isp1362_hcd_to_hcd(isp1362_hcd), urb); | |
474 | spin_unlock(&isp1362_hcd->lock); | |
475 | usb_hcd_giveback_urb(isp1362_hcd_to_hcd(isp1362_hcd), urb, status); | |
476 | spin_lock(&isp1362_hcd->lock); | |
477 | ||
478 | /* take idle endpoints out of the schedule right away */ | |
479 | if (!list_empty(&ep->hep->urb_list)) | |
480 | return; | |
481 | ||
482 | /* async deschedule */ | |
483 | if (!list_empty(&ep->schedule)) { | |
484 | list_del_init(&ep->schedule); | |
485 | return; | |
486 | } | |
487 | ||
488 | ||
489 | if (ep->interval) { | |
490 | /* periodic deschedule */ | |
491 | DBG(1, "deschedule qh%d/%p branch %d load %d bandwidth %d -> %d\n", ep->interval, | |
492 | ep, ep->branch, ep->load, | |
493 | isp1362_hcd->load[ep->branch], | |
494 | isp1362_hcd->load[ep->branch] - ep->load); | |
495 | isp1362_hcd->load[ep->branch] -= ep->load; | |
496 | ep->branch = PERIODIC_SIZE; | |
497 | } | |
498 | } | |
499 | ||
500 | /* | |
501 | * Analyze transfer results, handle partial transfers and errors | |
502 | */ | |
503 | static void postproc_ep(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep) | |
504 | { | |
505 | struct urb *urb = get_urb(ep); | |
506 | struct usb_device *udev; | |
507 | struct ptd *ptd; | |
508 | int short_ok; | |
509 | u16 len; | |
510 | int urbstat = -EINPROGRESS; | |
511 | u8 cc; | |
512 | ||
513 | DBG(2, "%s: ep %p req %d\n", __func__, ep, ep->num_req); | |
514 | ||
515 | udev = urb->dev; | |
516 | ptd = &ep->ptd; | |
517 | cc = PTD_GET_CC(ptd); | |
518 | if (cc == PTD_NOTACCESSED) { | |
519 | pr_err("%s: req %d PTD %p Untouched by ISP1362\n", __func__, | |
520 | ep->num_req, ptd); | |
521 | cc = PTD_DEVNOTRESP; | |
522 | } | |
523 | ||
524 | short_ok = !(urb->transfer_flags & URB_SHORT_NOT_OK); | |
525 | len = urb->transfer_buffer_length - urb->actual_length; | |
526 | ||
527 | /* Data underrun is special. For allowed underrun | |
528 | we clear the error and continue as normal. For | |
529 | forbidden underrun we finish the DATA stage | |
530 | immediately while for control transfer, | |
531 | we do a STATUS stage. | |
532 | */ | |
533 | if (cc == PTD_DATAUNDERRUN) { | |
534 | if (short_ok) { | |
535 | DBG(1, "%s: req %d Allowed data underrun short_%sok %d/%d/%d byte\n", | |
536 | __func__, ep->num_req, short_ok ? "" : "not_", | |
537 | PTD_GET_COUNT(ptd), ep->maxpacket, len); | |
538 | cc = PTD_CC_NOERROR; | |
539 | urbstat = 0; | |
540 | } else { | |
541 | DBG(1, "%s: req %d Data Underrun %s nextpid %02x short_%sok %d/%d/%d byte\n", | |
542 | __func__, ep->num_req, | |
543 | usb_pipein(urb->pipe) ? "IN" : "OUT", ep->nextpid, | |
544 | short_ok ? "" : "not_", | |
545 | PTD_GET_COUNT(ptd), ep->maxpacket, len); | |
546 | if (usb_pipecontrol(urb->pipe)) { | |
547 | ep->nextpid = USB_PID_ACK; | |
548 | /* save the data underrun error code for later and | |
549 | * procede with the status stage | |
550 | */ | |
551 | urb->actual_length += PTD_GET_COUNT(ptd); | |
552 | BUG_ON(urb->actual_length > urb->transfer_buffer_length); | |
553 | ||
554 | if (urb->status == -EINPROGRESS) | |
555 | urb->status = cc_to_error[PTD_DATAUNDERRUN]; | |
556 | } else { | |
557 | usb_settoggle(udev, ep->epnum, ep->nextpid == USB_PID_OUT, | |
558 | PTD_GET_TOGGLE(ptd)); | |
559 | urbstat = cc_to_error[PTD_DATAUNDERRUN]; | |
560 | } | |
561 | goto out; | |
562 | } | |
563 | } | |
564 | ||
565 | if (cc != PTD_CC_NOERROR) { | |
566 | if (++ep->error_count >= 3 || cc == PTD_CC_STALL || cc == PTD_DATAOVERRUN) { | |
567 | urbstat = cc_to_error[cc]; | |
568 | DBG(1, "%s: req %d nextpid %02x, status %d, error %d, error_count %d\n", | |
569 | __func__, ep->num_req, ep->nextpid, urbstat, cc, | |
570 | ep->error_count); | |
571 | } | |
572 | goto out; | |
573 | } | |
574 | ||
575 | switch (ep->nextpid) { | |
576 | case USB_PID_OUT: | |
577 | if (PTD_GET_COUNT(ptd) != ep->length) | |
578 | pr_err("%s: count=%d len=%d\n", __func__, | |
579 | PTD_GET_COUNT(ptd), ep->length); | |
580 | BUG_ON(PTD_GET_COUNT(ptd) != ep->length); | |
581 | urb->actual_length += ep->length; | |
582 | BUG_ON(urb->actual_length > urb->transfer_buffer_length); | |
583 | usb_settoggle(udev, ep->epnum, 1, PTD_GET_TOGGLE(ptd)); | |
584 | if (urb->actual_length == urb->transfer_buffer_length) { | |
585 | DBG(3, "%s: req %d xfer complete %d/%d status %d -> 0\n", __func__, | |
586 | ep->num_req, len, ep->maxpacket, urbstat); | |
587 | if (usb_pipecontrol(urb->pipe)) { | |
588 | DBG(3, "%s: req %d %s Wait for ACK\n", __func__, | |
589 | ep->num_req, | |
590 | usb_pipein(urb->pipe) ? "IN" : "OUT"); | |
591 | ep->nextpid = USB_PID_ACK; | |
592 | } else { | |
593 | if (len % ep->maxpacket || | |
594 | !(urb->transfer_flags & URB_ZERO_PACKET)) { | |
595 | urbstat = 0; | |
596 | DBG(3, "%s: req %d URB %s status %d count %d/%d/%d\n", | |
597 | __func__, ep->num_req, usb_pipein(urb->pipe) ? "IN" : "OUT", | |
598 | urbstat, len, ep->maxpacket, urb->actual_length); | |
599 | } | |
600 | } | |
601 | } | |
602 | break; | |
603 | case USB_PID_IN: | |
604 | len = PTD_GET_COUNT(ptd); | |
605 | BUG_ON(len > ep->length); | |
606 | urb->actual_length += len; | |
607 | BUG_ON(urb->actual_length > urb->transfer_buffer_length); | |
608 | usb_settoggle(udev, ep->epnum, 0, PTD_GET_TOGGLE(ptd)); | |
609 | /* if transfer completed or (allowed) data underrun */ | |
610 | if ((urb->transfer_buffer_length == urb->actual_length) || | |
611 | len % ep->maxpacket) { | |
612 | DBG(3, "%s: req %d xfer complete %d/%d status %d -> 0\n", __func__, | |
613 | ep->num_req, len, ep->maxpacket, urbstat); | |
614 | if (usb_pipecontrol(urb->pipe)) { | |
615 | DBG(3, "%s: req %d %s Wait for ACK\n", __func__, | |
616 | ep->num_req, | |
617 | usb_pipein(urb->pipe) ? "IN" : "OUT"); | |
618 | ep->nextpid = USB_PID_ACK; | |
619 | } else { | |
620 | urbstat = 0; | |
621 | DBG(3, "%s: req %d URB %s status %d count %d/%d/%d\n", | |
622 | __func__, ep->num_req, usb_pipein(urb->pipe) ? "IN" : "OUT", | |
623 | urbstat, len, ep->maxpacket, urb->actual_length); | |
624 | } | |
625 | } | |
626 | break; | |
627 | case USB_PID_SETUP: | |
628 | if (urb->transfer_buffer_length == urb->actual_length) { | |
629 | ep->nextpid = USB_PID_ACK; | |
630 | } else if (usb_pipeout(urb->pipe)) { | |
631 | usb_settoggle(udev, 0, 1, 1); | |
632 | ep->nextpid = USB_PID_OUT; | |
633 | } else { | |
634 | usb_settoggle(udev, 0, 0, 1); | |
635 | ep->nextpid = USB_PID_IN; | |
636 | } | |
637 | break; | |
638 | case USB_PID_ACK: | |
639 | DBG(3, "%s: req %d got ACK %d -> 0\n", __func__, ep->num_req, | |
640 | urbstat); | |
641 | WARN_ON(urbstat != -EINPROGRESS); | |
642 | urbstat = 0; | |
643 | ep->nextpid = 0; | |
644 | break; | |
645 | default: | |
646 | BUG_ON(1); | |
647 | } | |
648 | ||
649 | out: | |
650 | if (urbstat != -EINPROGRESS) { | |
651 | DBG(2, "%s: Finishing ep %p req %d urb %p status %d\n", __func__, | |
652 | ep, ep->num_req, urb, urbstat); | |
653 | finish_request(isp1362_hcd, ep, urb, urbstat); | |
654 | } | |
655 | } | |
656 | ||
657 | static void finish_unlinks(struct isp1362_hcd *isp1362_hcd) | |
658 | { | |
659 | struct isp1362_ep *ep; | |
660 | struct isp1362_ep *tmp; | |
661 | ||
662 | list_for_each_entry_safe(ep, tmp, &isp1362_hcd->remove_list, remove_list) { | |
663 | struct isp1362_ep_queue *epq = | |
664 | get_ptd_queue(isp1362_hcd, ep->ptd_offset); | |
665 | int index = ep->ptd_index; | |
666 | ||
667 | BUG_ON(epq == NULL); | |
668 | if (index >= 0) { | |
669 | DBG(1, "%s: remove PTD[%d] $%04x\n", __func__, index, ep->ptd_offset); | |
670 | BUG_ON(ep->num_ptds == 0); | |
671 | release_ptd_buffers(epq, ep); | |
672 | } | |
673 | if (!list_empty(&ep->hep->urb_list)) { | |
674 | struct urb *urb = get_urb(ep); | |
675 | ||
676 | DBG(1, "%s: Finishing req %d ep %p from remove_list\n", __func__, | |
677 | ep->num_req, ep); | |
678 | finish_request(isp1362_hcd, ep, urb, -ESHUTDOWN); | |
679 | } | |
680 | WARN_ON(list_empty(&ep->active)); | |
681 | if (!list_empty(&ep->active)) { | |
682 | list_del_init(&ep->active); | |
683 | DBG(1, "%s: ep %p removed from active list\n", __func__, ep); | |
684 | } | |
685 | list_del_init(&ep->remove_list); | |
686 | DBG(1, "%s: ep %p removed from remove_list\n", __func__, ep); | |
687 | } | |
688 | DBG(1, "%s: Done\n", __func__); | |
689 | } | |
690 | ||
691 | static inline void enable_atl_transfers(struct isp1362_hcd *isp1362_hcd, int count) | |
692 | { | |
693 | if (count > 0) { | |
694 | if (count < isp1362_hcd->atl_queue.ptd_count) | |
695 | isp1362_write_reg16(isp1362_hcd, HCATLDTC, count); | |
696 | isp1362_enable_int(isp1362_hcd, HCuPINT_ATL); | |
697 | isp1362_write_reg32(isp1362_hcd, HCATLSKIP, isp1362_hcd->atl_queue.skip_map); | |
698 | isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); | |
699 | } else | |
700 | isp1362_enable_int(isp1362_hcd, HCuPINT_SOF); | |
701 | } | |
702 | ||
703 | static inline void enable_intl_transfers(struct isp1362_hcd *isp1362_hcd) | |
704 | { | |
705 | isp1362_enable_int(isp1362_hcd, HCuPINT_INTL); | |
706 | isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); | |
707 | isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, isp1362_hcd->intl_queue.skip_map); | |
708 | } | |
709 | ||
710 | static inline void enable_istl_transfers(struct isp1362_hcd *isp1362_hcd, int flip) | |
711 | { | |
712 | isp1362_enable_int(isp1362_hcd, flip ? HCuPINT_ISTL1 : HCuPINT_ISTL0); | |
713 | isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, flip ? | |
714 | HCBUFSTAT_ISTL1_FULL : HCBUFSTAT_ISTL0_FULL); | |
715 | } | |
716 | ||
717 | static int submit_req(struct isp1362_hcd *isp1362_hcd, struct urb *urb, | |
718 | struct isp1362_ep *ep, struct isp1362_ep_queue *epq) | |
719 | { | |
720 | int index = epq->free_ptd; | |
721 | ||
722 | prepare_ptd(isp1362_hcd, urb, ep, epq, 0); | |
723 | index = claim_ptd_buffers(epq, ep, ep->length); | |
724 | if (index == -ENOMEM) { | |
725 | DBG(1, "%s: req %d No free %s PTD available: %d, %08lx:%08lx\n", __func__, | |
726 | ep->num_req, epq->name, ep->num_ptds, epq->buf_map, epq->skip_map); | |
727 | return index; | |
728 | } else if (index == -EOVERFLOW) { | |
729 | DBG(1, "%s: req %d Not enough space for %d byte %s PTD %d %08lx:%08lx\n", | |
730 | __func__, ep->num_req, ep->length, epq->name, ep->num_ptds, | |
731 | epq->buf_map, epq->skip_map); | |
732 | return index; | |
733 | } else | |
734 | BUG_ON(index < 0); | |
735 | list_add_tail(&ep->active, &epq->active); | |
736 | DBG(1, "%s: ep %p req %d len %d added to active list %p\n", __func__, | |
737 | ep, ep->num_req, ep->length, &epq->active); | |
738 | DBG(1, "%s: Submitting %s PTD $%04x for ep %p req %d\n", __func__, epq->name, | |
739 | ep->ptd_offset, ep, ep->num_req); | |
740 | isp1362_write_ptd(isp1362_hcd, ep, epq); | |
741 | __clear_bit(ep->ptd_index, &epq->skip_map); | |
742 | ||
743 | return 0; | |
744 | } | |
745 | ||
746 | static void start_atl_transfers(struct isp1362_hcd *isp1362_hcd) | |
747 | { | |
748 | int ptd_count = 0; | |
749 | struct isp1362_ep_queue *epq = &isp1362_hcd->atl_queue; | |
750 | struct isp1362_ep *ep; | |
751 | int defer = 0; | |
752 | ||
753 | if (atomic_read(&epq->finishing)) { | |
754 | DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); | |
755 | return; | |
756 | } | |
757 | ||
758 | list_for_each_entry(ep, &isp1362_hcd->async, schedule) { | |
759 | struct urb *urb = get_urb(ep); | |
760 | int ret; | |
761 | ||
762 | if (!list_empty(&ep->active)) { | |
763 | DBG(2, "%s: Skipping active %s ep %p\n", __func__, epq->name, ep); | |
764 | continue; | |
765 | } | |
766 | ||
767 | DBG(1, "%s: Processing %s ep %p req %d\n", __func__, epq->name, | |
768 | ep, ep->num_req); | |
769 | ||
770 | ret = submit_req(isp1362_hcd, urb, ep, epq); | |
771 | if (ret == -ENOMEM) { | |
772 | defer = 1; | |
773 | break; | |
774 | } else if (ret == -EOVERFLOW) { | |
775 | defer = 1; | |
776 | continue; | |
777 | } | |
778 | #ifdef BUGGY_PXA2XX_UDC_USBTEST | |
779 | defer = ep->nextpid == USB_PID_SETUP; | |
780 | #endif | |
781 | ptd_count++; | |
782 | } | |
783 | ||
784 | /* Avoid starving of endpoints */ | |
785 | if (isp1362_hcd->async.next != isp1362_hcd->async.prev) { | |
786 | DBG(2, "%s: Cycling ASYNC schedule %d\n", __func__, ptd_count); | |
787 | list_move(&isp1362_hcd->async, isp1362_hcd->async.next); | |
788 | } | |
789 | if (ptd_count || defer) | |
790 | enable_atl_transfers(isp1362_hcd, defer ? 0 : ptd_count); | |
791 | ||
792 | epq->ptd_count += ptd_count; | |
793 | if (epq->ptd_count > epq->stat_maxptds) { | |
794 | epq->stat_maxptds = epq->ptd_count; | |
795 | DBG(0, "%s: max_ptds: %d\n", __func__, epq->stat_maxptds); | |
796 | } | |
797 | } | |
798 | ||
799 | static void start_intl_transfers(struct isp1362_hcd *isp1362_hcd) | |
800 | { | |
801 | int ptd_count = 0; | |
802 | struct isp1362_ep_queue *epq = &isp1362_hcd->intl_queue; | |
803 | struct isp1362_ep *ep; | |
804 | ||
805 | if (atomic_read(&epq->finishing)) { | |
806 | DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); | |
807 | return; | |
808 | } | |
809 | ||
810 | list_for_each_entry(ep, &isp1362_hcd->periodic, schedule) { | |
811 | struct urb *urb = get_urb(ep); | |
812 | int ret; | |
813 | ||
814 | if (!list_empty(&ep->active)) { | |
815 | DBG(1, "%s: Skipping active %s ep %p\n", __func__, | |
816 | epq->name, ep); | |
817 | continue; | |
818 | } | |
819 | ||
820 | DBG(1, "%s: Processing %s ep %p req %d\n", __func__, | |
821 | epq->name, ep, ep->num_req); | |
822 | ret = submit_req(isp1362_hcd, urb, ep, epq); | |
823 | if (ret == -ENOMEM) | |
824 | break; | |
825 | else if (ret == -EOVERFLOW) | |
826 | continue; | |
827 | ptd_count++; | |
828 | } | |
829 | ||
830 | if (ptd_count) { | |
831 | static int last_count; | |
832 | ||
833 | if (ptd_count != last_count) { | |
834 | DBG(0, "%s: ptd_count: %d\n", __func__, ptd_count); | |
835 | last_count = ptd_count; | |
836 | } | |
837 | enable_intl_transfers(isp1362_hcd); | |
838 | } | |
839 | ||
840 | epq->ptd_count += ptd_count; | |
841 | if (epq->ptd_count > epq->stat_maxptds) | |
842 | epq->stat_maxptds = epq->ptd_count; | |
843 | } | |
844 | ||
845 | static inline int next_ptd(struct isp1362_ep_queue *epq, struct isp1362_ep *ep) | |
846 | { | |
847 | u16 ptd_offset = ep->ptd_offset; | |
848 | int num_ptds = (ep->length + PTD_HEADER_SIZE + (epq->blk_size - 1)) / epq->blk_size; | |
849 | ||
850 | DBG(2, "%s: PTD offset $%04x + %04x => %d * %04x -> $%04x\n", __func__, ptd_offset, | |
851 | ep->length, num_ptds, epq->blk_size, ptd_offset + num_ptds * epq->blk_size); | |
852 | ||
853 | ptd_offset += num_ptds * epq->blk_size; | |
854 | if (ptd_offset < epq->buf_start + epq->buf_size) | |
855 | return ptd_offset; | |
856 | else | |
857 | return -ENOMEM; | |
858 | } | |
859 | ||
860 | static void start_iso_transfers(struct isp1362_hcd *isp1362_hcd) | |
861 | { | |
862 | int ptd_count = 0; | |
863 | int flip = isp1362_hcd->istl_flip; | |
864 | struct isp1362_ep_queue *epq; | |
865 | int ptd_offset; | |
866 | struct isp1362_ep *ep; | |
867 | struct isp1362_ep *tmp; | |
868 | u16 fno = isp1362_read_reg32(isp1362_hcd, HCFMNUM); | |
869 | ||
870 | fill2: | |
871 | epq = &isp1362_hcd->istl_queue[flip]; | |
872 | if (atomic_read(&epq->finishing)) { | |
873 | DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); | |
874 | return; | |
875 | } | |
876 | ||
877 | if (!list_empty(&epq->active)) | |
878 | return; | |
879 | ||
880 | ptd_offset = epq->buf_start; | |
881 | list_for_each_entry_safe(ep, tmp, &isp1362_hcd->isoc, schedule) { | |
882 | struct urb *urb = get_urb(ep); | |
883 | s16 diff = fno - (u16)urb->start_frame; | |
884 | ||
885 | DBG(1, "%s: Processing %s ep %p\n", __func__, epq->name, ep); | |
886 | ||
887 | if (diff > urb->number_of_packets) { | |
888 | /* time frame for this URB has elapsed */ | |
889 | finish_request(isp1362_hcd, ep, urb, -EOVERFLOW); | |
890 | continue; | |
891 | } else if (diff < -1) { | |
892 | /* URB is not due in this frame or the next one. | |
893 | * Comparing with '-1' instead of '0' accounts for double | |
894 | * buffering in the ISP1362 which enables us to queue the PTD | |
895 | * one frame ahead of time | |
896 | */ | |
897 | } else if (diff == -1) { | |
898 | /* submit PTD's that are due in the next frame */ | |
899 | prepare_ptd(isp1362_hcd, urb, ep, epq, fno); | |
900 | if (ptd_offset + PTD_HEADER_SIZE + ep->length > | |
901 | epq->buf_start + epq->buf_size) { | |
902 | pr_err("%s: Not enough ISO buffer space for %d byte PTD\n", | |
903 | __func__, ep->length); | |
904 | continue; | |
905 | } | |
906 | ep->ptd_offset = ptd_offset; | |
907 | list_add_tail(&ep->active, &epq->active); | |
908 | ||
909 | ptd_offset = next_ptd(epq, ep); | |
910 | if (ptd_offset < 0) { | |
911 | pr_warning("%s: req %d No more %s PTD buffers available\n", __func__, | |
912 | ep->num_req, epq->name); | |
913 | break; | |
914 | } | |
915 | } | |
916 | } | |
917 | list_for_each_entry(ep, &epq->active, active) { | |
918 | if (epq->active.next == &ep->active) | |
919 | ep->ptd.mps |= PTD_LAST_MSK; | |
920 | isp1362_write_ptd(isp1362_hcd, ep, epq); | |
921 | ptd_count++; | |
922 | } | |
923 | ||
924 | if (ptd_count) | |
925 | enable_istl_transfers(isp1362_hcd, flip); | |
926 | ||
927 | epq->ptd_count += ptd_count; | |
928 | if (epq->ptd_count > epq->stat_maxptds) | |
929 | epq->stat_maxptds = epq->ptd_count; | |
930 | ||
931 | /* check, whether the second ISTL buffer may also be filled */ | |
932 | if (!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & | |
933 | (flip ? HCBUFSTAT_ISTL0_FULL : HCBUFSTAT_ISTL1_FULL))) { | |
934 | fno++; | |
935 | ptd_count = 0; | |
936 | flip = 1 - flip; | |
937 | goto fill2; | |
938 | } | |
939 | } | |
940 | ||
941 | static void finish_transfers(struct isp1362_hcd *isp1362_hcd, unsigned long done_map, | |
942 | struct isp1362_ep_queue *epq) | |
943 | { | |
944 | struct isp1362_ep *ep; | |
945 | struct isp1362_ep *tmp; | |
946 | ||
947 | if (list_empty(&epq->active)) { | |
948 | DBG(1, "%s: Nothing to do for %s queue\n", __func__, epq->name); | |
949 | return; | |
950 | } | |
951 | ||
952 | DBG(1, "%s: Finishing %s transfers %08lx\n", __func__, epq->name, done_map); | |
953 | ||
954 | atomic_inc(&epq->finishing); | |
955 | list_for_each_entry_safe(ep, tmp, &epq->active, active) { | |
956 | int index = ep->ptd_index; | |
957 | ||
958 | DBG(1, "%s: Checking %s PTD[%02x] $%04x\n", __func__, epq->name, | |
959 | index, ep->ptd_offset); | |
960 | ||
961 | BUG_ON(index < 0); | |
962 | if (__test_and_clear_bit(index, &done_map)) { | |
963 | isp1362_read_ptd(isp1362_hcd, ep, epq); | |
964 | epq->free_ptd = index; | |
965 | BUG_ON(ep->num_ptds == 0); | |
966 | release_ptd_buffers(epq, ep); | |
967 | ||
968 | DBG(1, "%s: ep %p req %d removed from active list\n", __func__, | |
969 | ep, ep->num_req); | |
970 | if (!list_empty(&ep->remove_list)) { | |
971 | list_del_init(&ep->remove_list); | |
972 | DBG(1, "%s: ep %p removed from remove list\n", __func__, ep); | |
973 | } | |
974 | DBG(1, "%s: Postprocessing %s ep %p req %d\n", __func__, epq->name, | |
975 | ep, ep->num_req); | |
976 | postproc_ep(isp1362_hcd, ep); | |
977 | } | |
978 | if (!done_map) | |
979 | break; | |
980 | } | |
981 | if (done_map) | |
982 | pr_warning("%s: done_map not clear: %08lx:%08lx\n", __func__, done_map, | |
983 | epq->skip_map); | |
984 | atomic_dec(&epq->finishing); | |
985 | } | |
986 | ||
987 | static void finish_iso_transfers(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep_queue *epq) | |
988 | { | |
989 | struct isp1362_ep *ep; | |
990 | struct isp1362_ep *tmp; | |
991 | ||
992 | if (list_empty(&epq->active)) { | |
993 | DBG(1, "%s: Nothing to do for %s queue\n", __func__, epq->name); | |
994 | return; | |
995 | } | |
996 | ||
997 | DBG(1, "%s: Finishing %s transfers\n", __func__, epq->name); | |
998 | ||
999 | atomic_inc(&epq->finishing); | |
1000 | list_for_each_entry_safe(ep, tmp, &epq->active, active) { | |
1001 | DBG(1, "%s: Checking PTD $%04x\n", __func__, ep->ptd_offset); | |
1002 | ||
1003 | isp1362_read_ptd(isp1362_hcd, ep, epq); | |
1004 | DBG(1, "%s: Postprocessing %s ep %p\n", __func__, epq->name, ep); | |
1005 | postproc_ep(isp1362_hcd, ep); | |
1006 | } | |
1007 | WARN_ON(epq->blk_size != 0); | |
1008 | atomic_dec(&epq->finishing); | |
1009 | } | |
1010 | ||
1011 | static irqreturn_t isp1362_irq(struct usb_hcd *hcd) | |
1012 | { | |
1013 | int handled = 0; | |
1014 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
1015 | u16 irqstat; | |
1016 | u16 svc_mask; | |
1017 | ||
1018 | spin_lock(&isp1362_hcd->lock); | |
1019 | ||
1020 | BUG_ON(isp1362_hcd->irq_active++); | |
1021 | ||
1022 | isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); | |
1023 | ||
1024 | irqstat = isp1362_read_reg16(isp1362_hcd, HCuPINT); | |
1025 | DBG(3, "%s: got IRQ %04x:%04x\n", __func__, irqstat, isp1362_hcd->irqenb); | |
1026 | ||
1027 | /* only handle interrupts that are currently enabled */ | |
1028 | irqstat &= isp1362_hcd->irqenb; | |
1029 | isp1362_write_reg16(isp1362_hcd, HCuPINT, irqstat); | |
1030 | svc_mask = irqstat; | |
1031 | ||
1032 | if (irqstat & HCuPINT_SOF) { | |
1033 | isp1362_hcd->irqenb &= ~HCuPINT_SOF; | |
1034 | isp1362_hcd->irq_stat[ISP1362_INT_SOF]++; | |
1035 | handled = 1; | |
1036 | svc_mask &= ~HCuPINT_SOF; | |
1037 | DBG(3, "%s: SOF\n", __func__); | |
1038 | isp1362_hcd->fmindex = isp1362_read_reg32(isp1362_hcd, HCFMNUM); | |
1039 | if (!list_empty(&isp1362_hcd->remove_list)) | |
1040 | finish_unlinks(isp1362_hcd); | |
1041 | if (!list_empty(&isp1362_hcd->async) && !(irqstat & HCuPINT_ATL)) { | |
1042 | if (list_empty(&isp1362_hcd->atl_queue.active)) { | |
1043 | start_atl_transfers(isp1362_hcd); | |
1044 | } else { | |
1045 | isp1362_enable_int(isp1362_hcd, HCuPINT_ATL); | |
1046 | isp1362_write_reg32(isp1362_hcd, HCATLSKIP, | |
1047 | isp1362_hcd->atl_queue.skip_map); | |
1048 | isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); | |
1049 | } | |
1050 | } | |
1051 | } | |
1052 | ||
1053 | if (irqstat & HCuPINT_ISTL0) { | |
1054 | isp1362_hcd->irq_stat[ISP1362_INT_ISTL0]++; | |
1055 | handled = 1; | |
1056 | svc_mask &= ~HCuPINT_ISTL0; | |
1057 | isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ISTL0_FULL); | |
1058 | DBG(1, "%s: ISTL0\n", __func__); | |
1059 | WARN_ON((int)!!isp1362_hcd->istl_flip); | |
3d2b0814 JL |
1060 | WARN_ON(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & |
1061 | HCBUFSTAT_ISTL0_ACTIVE); | |
1062 | WARN_ON(!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & | |
1063 | HCBUFSTAT_ISTL0_DONE)); | |
a9d43091 LW |
1064 | isp1362_hcd->irqenb &= ~HCuPINT_ISTL0; |
1065 | } | |
1066 | ||
1067 | if (irqstat & HCuPINT_ISTL1) { | |
1068 | isp1362_hcd->irq_stat[ISP1362_INT_ISTL1]++; | |
1069 | handled = 1; | |
1070 | svc_mask &= ~HCuPINT_ISTL1; | |
1071 | isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ISTL1_FULL); | |
1072 | DBG(1, "%s: ISTL1\n", __func__); | |
1073 | WARN_ON(!(int)isp1362_hcd->istl_flip); | |
3d2b0814 JL |
1074 | WARN_ON(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & |
1075 | HCBUFSTAT_ISTL1_ACTIVE); | |
1076 | WARN_ON(!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & | |
1077 | HCBUFSTAT_ISTL1_DONE)); | |
a9d43091 LW |
1078 | isp1362_hcd->irqenb &= ~HCuPINT_ISTL1; |
1079 | } | |
1080 | ||
1081 | if (irqstat & (HCuPINT_ISTL0 | HCuPINT_ISTL1)) { | |
1082 | WARN_ON((irqstat & (HCuPINT_ISTL0 | HCuPINT_ISTL1)) == | |
1083 | (HCuPINT_ISTL0 | HCuPINT_ISTL1)); | |
1084 | finish_iso_transfers(isp1362_hcd, | |
1085 | &isp1362_hcd->istl_queue[isp1362_hcd->istl_flip]); | |
1086 | start_iso_transfers(isp1362_hcd); | |
1087 | isp1362_hcd->istl_flip = 1 - isp1362_hcd->istl_flip; | |
1088 | } | |
1089 | ||
1090 | if (irqstat & HCuPINT_INTL) { | |
1091 | u32 done_map = isp1362_read_reg32(isp1362_hcd, HCINTLDONE); | |
1092 | u32 skip_map = isp1362_read_reg32(isp1362_hcd, HCINTLSKIP); | |
1093 | isp1362_hcd->irq_stat[ISP1362_INT_INTL]++; | |
1094 | ||
1095 | DBG(2, "%s: INTL\n", __func__); | |
1096 | ||
1097 | svc_mask &= ~HCuPINT_INTL; | |
1098 | ||
1099 | isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, skip_map | done_map); | |
1100 | if (~(done_map | skip_map) == 0) | |
1101 | /* All PTDs are finished, disable INTL processing entirely */ | |
1102 | isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); | |
1103 | ||
1104 | handled = 1; | |
1105 | WARN_ON(!done_map); | |
1106 | if (done_map) { | |
1107 | DBG(3, "%s: INTL done_map %08x\n", __func__, done_map); | |
1108 | finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->intl_queue); | |
1109 | start_intl_transfers(isp1362_hcd); | |
1110 | } | |
1111 | } | |
1112 | ||
1113 | if (irqstat & HCuPINT_ATL) { | |
1114 | u32 done_map = isp1362_read_reg32(isp1362_hcd, HCATLDONE); | |
1115 | u32 skip_map = isp1362_read_reg32(isp1362_hcd, HCATLSKIP); | |
1116 | isp1362_hcd->irq_stat[ISP1362_INT_ATL]++; | |
1117 | ||
1118 | DBG(2, "%s: ATL\n", __func__); | |
1119 | ||
1120 | svc_mask &= ~HCuPINT_ATL; | |
1121 | ||
1122 | isp1362_write_reg32(isp1362_hcd, HCATLSKIP, skip_map | done_map); | |
1123 | if (~(done_map | skip_map) == 0) | |
1124 | isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); | |
1125 | if (done_map) { | |
1126 | DBG(3, "%s: ATL done_map %08x\n", __func__, done_map); | |
1127 | finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->atl_queue); | |
1128 | start_atl_transfers(isp1362_hcd); | |
1129 | } | |
1130 | handled = 1; | |
1131 | } | |
1132 | ||
1133 | if (irqstat & HCuPINT_OPR) { | |
1134 | u32 intstat = isp1362_read_reg32(isp1362_hcd, HCINTSTAT); | |
1135 | isp1362_hcd->irq_stat[ISP1362_INT_OPR]++; | |
1136 | ||
1137 | svc_mask &= ~HCuPINT_OPR; | |
1138 | DBG(2, "%s: OPR %08x:%08x\n", __func__, intstat, isp1362_hcd->intenb); | |
1139 | intstat &= isp1362_hcd->intenb; | |
1140 | if (intstat & OHCI_INTR_UE) { | |
1141 | pr_err("Unrecoverable error\n"); | |
1142 | /* FIXME: do here reset or cleanup or whatever */ | |
1143 | } | |
1144 | if (intstat & OHCI_INTR_RHSC) { | |
1145 | isp1362_hcd->rhstatus = isp1362_read_reg32(isp1362_hcd, HCRHSTATUS); | |
1146 | isp1362_hcd->rhport[0] = isp1362_read_reg32(isp1362_hcd, HCRHPORT1); | |
1147 | isp1362_hcd->rhport[1] = isp1362_read_reg32(isp1362_hcd, HCRHPORT2); | |
1148 | } | |
1149 | if (intstat & OHCI_INTR_RD) { | |
1150 | pr_info("%s: RESUME DETECTED\n", __func__); | |
1151 | isp1362_show_reg(isp1362_hcd, HCCONTROL); | |
1152 | usb_hcd_resume_root_hub(hcd); | |
1153 | } | |
1154 | isp1362_write_reg32(isp1362_hcd, HCINTSTAT, intstat); | |
1155 | irqstat &= ~HCuPINT_OPR; | |
1156 | handled = 1; | |
1157 | } | |
1158 | ||
1159 | if (irqstat & HCuPINT_SUSP) { | |
1160 | isp1362_hcd->irq_stat[ISP1362_INT_SUSP]++; | |
1161 | handled = 1; | |
1162 | svc_mask &= ~HCuPINT_SUSP; | |
1163 | ||
1164 | pr_info("%s: SUSPEND IRQ\n", __func__); | |
1165 | } | |
1166 | ||
1167 | if (irqstat & HCuPINT_CLKRDY) { | |
1168 | isp1362_hcd->irq_stat[ISP1362_INT_CLKRDY]++; | |
1169 | handled = 1; | |
1170 | isp1362_hcd->irqenb &= ~HCuPINT_CLKRDY; | |
1171 | svc_mask &= ~HCuPINT_CLKRDY; | |
1172 | pr_info("%s: CLKRDY IRQ\n", __func__); | |
1173 | } | |
1174 | ||
1175 | if (svc_mask) | |
1176 | pr_err("%s: Unserviced interrupt(s) %04x\n", __func__, svc_mask); | |
1177 | ||
1178 | isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); | |
1179 | isp1362_hcd->irq_active--; | |
1180 | spin_unlock(&isp1362_hcd->lock); | |
1181 | ||
1182 | return IRQ_RETVAL(handled); | |
1183 | } | |
1184 | ||
1185 | /*-------------------------------------------------------------------------*/ | |
1186 | ||
1187 | #define MAX_PERIODIC_LOAD 900 /* out of 1000 usec */ | |
1188 | static int balance(struct isp1362_hcd *isp1362_hcd, u16 interval, u16 load) | |
1189 | { | |
1190 | int i, branch = -ENOSPC; | |
1191 | ||
1192 | /* search for the least loaded schedule branch of that interval | |
1193 | * which has enough bandwidth left unreserved. | |
1194 | */ | |
1195 | for (i = 0; i < interval; i++) { | |
1196 | if (branch < 0 || isp1362_hcd->load[branch] > isp1362_hcd->load[i]) { | |
1197 | int j; | |
1198 | ||
1199 | for (j = i; j < PERIODIC_SIZE; j += interval) { | |
1200 | if ((isp1362_hcd->load[j] + load) > MAX_PERIODIC_LOAD) { | |
1201 | pr_err("%s: new load %d load[%02x] %d max %d\n", __func__, | |
1202 | load, j, isp1362_hcd->load[j], MAX_PERIODIC_LOAD); | |
1203 | break; | |
1204 | } | |
1205 | } | |
1206 | if (j < PERIODIC_SIZE) | |
1207 | continue; | |
1208 | branch = i; | |
1209 | } | |
1210 | } | |
1211 | return branch; | |
1212 | } | |
1213 | ||
1214 | /* NB! ALL the code above this point runs with isp1362_hcd->lock | |
1215 | held, irqs off | |
1216 | */ | |
1217 | ||
1218 | /*-------------------------------------------------------------------------*/ | |
1219 | ||
1220 | static int isp1362_urb_enqueue(struct usb_hcd *hcd, | |
1221 | struct urb *urb, | |
1222 | gfp_t mem_flags) | |
1223 | { | |
1224 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
1225 | struct usb_device *udev = urb->dev; | |
1226 | unsigned int pipe = urb->pipe; | |
1227 | int is_out = !usb_pipein(pipe); | |
1228 | int type = usb_pipetype(pipe); | |
1229 | int epnum = usb_pipeendpoint(pipe); | |
1230 | struct usb_host_endpoint *hep = urb->ep; | |
1231 | struct isp1362_ep *ep = NULL; | |
1232 | unsigned long flags; | |
1233 | int retval = 0; | |
1234 | ||
1235 | DBG(3, "%s: urb %p\n", __func__, urb); | |
1236 | ||
1237 | if (type == PIPE_ISOCHRONOUS) { | |
1238 | pr_err("Isochronous transfers not supported\n"); | |
1239 | return -ENOSPC; | |
1240 | } | |
1241 | ||
1242 | URB_DBG("%s: FA %d ep%d%s %s: len %d %s%s\n", __func__, | |
1243 | usb_pipedevice(pipe), epnum, | |
1244 | is_out ? "out" : "in", | |
1245 | usb_pipecontrol(pipe) ? "ctrl" : | |
1246 | usb_pipeint(pipe) ? "int" : | |
1247 | usb_pipebulk(pipe) ? "bulk" : | |
1248 | "iso", | |
1249 | urb->transfer_buffer_length, | |
1250 | (urb->transfer_flags & URB_ZERO_PACKET) ? "ZERO_PACKET " : "", | |
1251 | !(urb->transfer_flags & URB_SHORT_NOT_OK) ? | |
1252 | "short_ok" : ""); | |
1253 | ||
1254 | /* avoid all allocations within spinlocks: request or endpoint */ | |
1255 | if (!hep->hcpriv) { | |
6ebb7d1b | 1256 | ep = kzalloc(sizeof *ep, mem_flags); |
a9d43091 LW |
1257 | if (!ep) |
1258 | return -ENOMEM; | |
1259 | } | |
1260 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
1261 | ||
1262 | /* don't submit to a dead or disabled port */ | |
1263 | if (!((isp1362_hcd->rhport[0] | isp1362_hcd->rhport[1]) & | |
749da5f8 | 1264 | USB_PORT_STAT_ENABLE) || |
a9d43091 LW |
1265 | !HC_IS_RUNNING(hcd->state)) { |
1266 | kfree(ep); | |
1267 | retval = -ENODEV; | |
1268 | goto fail_not_linked; | |
1269 | } | |
1270 | ||
1271 | retval = usb_hcd_link_urb_to_ep(hcd, urb); | |
1272 | if (retval) { | |
1273 | kfree(ep); | |
1274 | goto fail_not_linked; | |
1275 | } | |
1276 | ||
1277 | if (hep->hcpriv) { | |
1278 | ep = hep->hcpriv; | |
1279 | } else { | |
1280 | INIT_LIST_HEAD(&ep->schedule); | |
1281 | INIT_LIST_HEAD(&ep->active); | |
1282 | INIT_LIST_HEAD(&ep->remove_list); | |
1283 | ep->udev = usb_get_dev(udev); | |
1284 | ep->hep = hep; | |
1285 | ep->epnum = epnum; | |
1286 | ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out); | |
1287 | ep->ptd_offset = -EINVAL; | |
1288 | ep->ptd_index = -EINVAL; | |
1289 | usb_settoggle(udev, epnum, is_out, 0); | |
1290 | ||
1291 | if (type == PIPE_CONTROL) | |
1292 | ep->nextpid = USB_PID_SETUP; | |
1293 | else if (is_out) | |
1294 | ep->nextpid = USB_PID_OUT; | |
1295 | else | |
1296 | ep->nextpid = USB_PID_IN; | |
1297 | ||
1298 | switch (type) { | |
1299 | case PIPE_ISOCHRONOUS: | |
1300 | case PIPE_INTERRUPT: | |
1301 | if (urb->interval > PERIODIC_SIZE) | |
1302 | urb->interval = PERIODIC_SIZE; | |
1303 | ep->interval = urb->interval; | |
1304 | ep->branch = PERIODIC_SIZE; | |
1305 | ep->load = usb_calc_bus_time(udev->speed, !is_out, | |
1306 | (type == PIPE_ISOCHRONOUS), | |
1307 | usb_maxpacket(udev, pipe, is_out)) / 1000; | |
1308 | break; | |
1309 | } | |
1310 | hep->hcpriv = ep; | |
1311 | } | |
1312 | ep->num_req = isp1362_hcd->req_serial++; | |
1313 | ||
1314 | /* maybe put endpoint into schedule */ | |
1315 | switch (type) { | |
1316 | case PIPE_CONTROL: | |
1317 | case PIPE_BULK: | |
1318 | if (list_empty(&ep->schedule)) { | |
1319 | DBG(1, "%s: Adding ep %p req %d to async schedule\n", | |
1320 | __func__, ep, ep->num_req); | |
1321 | list_add_tail(&ep->schedule, &isp1362_hcd->async); | |
1322 | } | |
1323 | break; | |
1324 | case PIPE_ISOCHRONOUS: | |
1325 | case PIPE_INTERRUPT: | |
1326 | urb->interval = ep->interval; | |
1327 | ||
1328 | /* urb submitted for already existing EP */ | |
1329 | if (ep->branch < PERIODIC_SIZE) | |
1330 | break; | |
1331 | ||
1332 | retval = balance(isp1362_hcd, ep->interval, ep->load); | |
1333 | if (retval < 0) { | |
1334 | pr_err("%s: balance returned %d\n", __func__, retval); | |
1335 | goto fail; | |
1336 | } | |
1337 | ep->branch = retval; | |
1338 | retval = 0; | |
1339 | isp1362_hcd->fmindex = isp1362_read_reg32(isp1362_hcd, HCFMNUM); | |
1340 | DBG(1, "%s: Current frame %04x branch %02x start_frame %04x(%04x)\n", | |
1341 | __func__, isp1362_hcd->fmindex, ep->branch, | |
1342 | ((isp1362_hcd->fmindex + PERIODIC_SIZE - 1) & | |
1343 | ~(PERIODIC_SIZE - 1)) + ep->branch, | |
1344 | (isp1362_hcd->fmindex & (PERIODIC_SIZE - 1)) + ep->branch); | |
1345 | ||
1346 | if (list_empty(&ep->schedule)) { | |
1347 | if (type == PIPE_ISOCHRONOUS) { | |
1348 | u16 frame = isp1362_hcd->fmindex; | |
1349 | ||
1350 | frame += max_t(u16, 8, ep->interval); | |
1351 | frame &= ~(ep->interval - 1); | |
1352 | frame |= ep->branch; | |
1353 | if (frame_before(frame, isp1362_hcd->fmindex)) | |
1354 | frame += ep->interval; | |
1355 | urb->start_frame = frame; | |
1356 | ||
1357 | DBG(1, "%s: Adding ep %p to isoc schedule\n", __func__, ep); | |
1358 | list_add_tail(&ep->schedule, &isp1362_hcd->isoc); | |
1359 | } else { | |
1360 | DBG(1, "%s: Adding ep %p to periodic schedule\n", __func__, ep); | |
1361 | list_add_tail(&ep->schedule, &isp1362_hcd->periodic); | |
1362 | } | |
1363 | } else | |
1364 | DBG(1, "%s: ep %p already scheduled\n", __func__, ep); | |
1365 | ||
1366 | DBG(2, "%s: load %d bandwidth %d -> %d\n", __func__, | |
1367 | ep->load / ep->interval, isp1362_hcd->load[ep->branch], | |
1368 | isp1362_hcd->load[ep->branch] + ep->load); | |
1369 | isp1362_hcd->load[ep->branch] += ep->load; | |
1370 | } | |
1371 | ||
1372 | urb->hcpriv = hep; | |
1373 | ALIGNSTAT(isp1362_hcd, urb->transfer_buffer); | |
1374 | ||
1375 | switch (type) { | |
1376 | case PIPE_CONTROL: | |
1377 | case PIPE_BULK: | |
1378 | start_atl_transfers(isp1362_hcd); | |
1379 | break; | |
1380 | case PIPE_INTERRUPT: | |
1381 | start_intl_transfers(isp1362_hcd); | |
1382 | break; | |
1383 | case PIPE_ISOCHRONOUS: | |
1384 | start_iso_transfers(isp1362_hcd); | |
1385 | break; | |
1386 | default: | |
1387 | BUG(); | |
1388 | } | |
1389 | fail: | |
1390 | if (retval) | |
1391 | usb_hcd_unlink_urb_from_ep(hcd, urb); | |
1392 | ||
1393 | ||
1394 | fail_not_linked: | |
1395 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
1396 | if (retval) | |
1397 | DBG(0, "%s: urb %p failed with %d\n", __func__, urb, retval); | |
1398 | return retval; | |
1399 | } | |
1400 | ||
1401 | static int isp1362_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) | |
1402 | { | |
1403 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
1404 | struct usb_host_endpoint *hep; | |
1405 | unsigned long flags; | |
1406 | struct isp1362_ep *ep; | |
1407 | int retval = 0; | |
1408 | ||
1409 | DBG(3, "%s: urb %p\n", __func__, urb); | |
1410 | ||
1411 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
1412 | retval = usb_hcd_check_unlink_urb(hcd, urb, status); | |
1413 | if (retval) | |
1414 | goto done; | |
1415 | ||
1416 | hep = urb->hcpriv; | |
1417 | ||
1418 | if (!hep) { | |
1419 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
1420 | return -EIDRM; | |
1421 | } | |
1422 | ||
1423 | ep = hep->hcpriv; | |
1424 | if (ep) { | |
1425 | /* In front of queue? */ | |
1426 | if (ep->hep->urb_list.next == &urb->urb_list) { | |
1427 | if (!list_empty(&ep->active)) { | |
1428 | DBG(1, "%s: urb %p ep %p req %d active PTD[%d] $%04x\n", __func__, | |
1429 | urb, ep, ep->num_req, ep->ptd_index, ep->ptd_offset); | |
1430 | /* disable processing and queue PTD for removal */ | |
1431 | remove_ptd(isp1362_hcd, ep); | |
1432 | urb = NULL; | |
1433 | } | |
1434 | } | |
1435 | if (urb) { | |
1436 | DBG(1, "%s: Finishing ep %p req %d\n", __func__, ep, | |
1437 | ep->num_req); | |
1438 | finish_request(isp1362_hcd, ep, urb, status); | |
1439 | } else | |
1440 | DBG(1, "%s: urb %p active; wait4irq\n", __func__, urb); | |
1441 | } else { | |
1442 | pr_warning("%s: No EP in URB %p\n", __func__, urb); | |
1443 | retval = -EINVAL; | |
1444 | } | |
1445 | done: | |
1446 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
1447 | ||
1448 | DBG(3, "%s: exit\n", __func__); | |
1449 | ||
1450 | return retval; | |
1451 | } | |
1452 | ||
1453 | static void isp1362_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep) | |
1454 | { | |
1455 | struct isp1362_ep *ep = hep->hcpriv; | |
1456 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
1457 | unsigned long flags; | |
1458 | ||
1459 | DBG(1, "%s: ep %p\n", __func__, ep); | |
1460 | if (!ep) | |
1461 | return; | |
1462 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
1463 | if (!list_empty(&hep->urb_list)) { | |
1464 | if (!list_empty(&ep->active) && list_empty(&ep->remove_list)) { | |
1465 | DBG(1, "%s: Removing ep %p req %d PTD[%d] $%04x\n", __func__, | |
1466 | ep, ep->num_req, ep->ptd_index, ep->ptd_offset); | |
1467 | remove_ptd(isp1362_hcd, ep); | |
1468 | pr_info("%s: Waiting for Interrupt to clean up\n", __func__); | |
1469 | } | |
1470 | } | |
1471 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
1472 | /* Wait for interrupt to clear out active list */ | |
1473 | while (!list_empty(&ep->active)) | |
1474 | msleep(1); | |
1475 | ||
1476 | DBG(1, "%s: Freeing EP %p\n", __func__, ep); | |
1477 | ||
1478 | usb_put_dev(ep->udev); | |
1479 | kfree(ep); | |
1480 | hep->hcpriv = NULL; | |
1481 | } | |
1482 | ||
1483 | static int isp1362_get_frame(struct usb_hcd *hcd) | |
1484 | { | |
1485 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
1486 | u32 fmnum; | |
1487 | unsigned long flags; | |
1488 | ||
1489 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
1490 | fmnum = isp1362_read_reg32(isp1362_hcd, HCFMNUM); | |
1491 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
1492 | ||
1493 | return (int)fmnum; | |
1494 | } | |
1495 | ||
1496 | /*-------------------------------------------------------------------------*/ | |
1497 | ||
1498 | /* Adapted from ohci-hub.c */ | |
1499 | static int isp1362_hub_status_data(struct usb_hcd *hcd, char *buf) | |
1500 | { | |
1501 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
1502 | int ports, i, changed = 0; | |
1503 | unsigned long flags; | |
1504 | ||
1505 | if (!HC_IS_RUNNING(hcd->state)) | |
1506 | return -ESHUTDOWN; | |
1507 | ||
1508 | /* Report no status change now, if we are scheduled to be | |
1509 | called later */ | |
1510 | if (timer_pending(&hcd->rh_timer)) | |
1511 | return 0; | |
1512 | ||
1513 | ports = isp1362_hcd->rhdesca & RH_A_NDP; | |
1514 | BUG_ON(ports > 2); | |
1515 | ||
1516 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
1517 | /* init status */ | |
1518 | if (isp1362_hcd->rhstatus & (RH_HS_LPSC | RH_HS_OCIC)) | |
1519 | buf[0] = changed = 1; | |
1520 | else | |
1521 | buf[0] = 0; | |
1522 | ||
1523 | for (i = 0; i < ports; i++) { | |
1524 | u32 status = isp1362_hcd->rhport[i]; | |
1525 | ||
1526 | if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC | | |
1527 | RH_PS_OCIC | RH_PS_PRSC)) { | |
1528 | changed = 1; | |
1529 | buf[0] |= 1 << (i + 1); | |
1530 | continue; | |
1531 | } | |
1532 | ||
1533 | if (!(status & RH_PS_CCS)) | |
1534 | continue; | |
1535 | } | |
1536 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
1537 | return changed; | |
1538 | } | |
1539 | ||
1540 | static void isp1362_hub_descriptor(struct isp1362_hcd *isp1362_hcd, | |
1541 | struct usb_hub_descriptor *desc) | |
1542 | { | |
1543 | u32 reg = isp1362_hcd->rhdesca; | |
1544 | ||
1545 | DBG(3, "%s: enter\n", __func__); | |
1546 | ||
1547 | desc->bDescriptorType = 0x29; | |
1548 | desc->bDescLength = 9; | |
1549 | desc->bHubContrCurrent = 0; | |
1550 | desc->bNbrPorts = reg & 0x3; | |
1551 | /* Power switching, device type, overcurrent. */ | |
1552 | desc->wHubCharacteristics = cpu_to_le16((reg >> 8) & 0x1f); | |
1553 | DBG(0, "%s: hubcharacteristics = %02x\n", __func__, cpu_to_le16((reg >> 8) & 0x1f)); | |
1554 | desc->bPwrOn2PwrGood = (reg >> 24) & 0xff; | |
1555 | /* two bitmaps: ports removable, and legacy PortPwrCtrlMask */ | |
1556 | desc->bitmap[0] = desc->bNbrPorts == 1 ? 1 << 1 : 3 << 1; | |
1557 | desc->bitmap[1] = ~0; | |
1558 | ||
1559 | DBG(3, "%s: exit\n", __func__); | |
1560 | } | |
1561 | ||
1562 | /* Adapted from ohci-hub.c */ | |
1563 | static int isp1362_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, | |
1564 | u16 wIndex, char *buf, u16 wLength) | |
1565 | { | |
1566 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
1567 | int retval = 0; | |
1568 | unsigned long flags; | |
1569 | unsigned long t1; | |
1570 | int ports = isp1362_hcd->rhdesca & RH_A_NDP; | |
1571 | u32 tmp = 0; | |
1572 | ||
1573 | switch (typeReq) { | |
1574 | case ClearHubFeature: | |
1575 | DBG(0, "ClearHubFeature: "); | |
1576 | switch (wValue) { | |
1577 | case C_HUB_OVER_CURRENT: | |
1578 | _DBG(0, "C_HUB_OVER_CURRENT\n"); | |
1579 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
1580 | isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_OCIC); | |
1581 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
1582 | case C_HUB_LOCAL_POWER: | |
1583 | _DBG(0, "C_HUB_LOCAL_POWER\n"); | |
1584 | break; | |
1585 | default: | |
1586 | goto error; | |
1587 | } | |
1588 | break; | |
1589 | case SetHubFeature: | |
1590 | DBG(0, "SetHubFeature: "); | |
1591 | switch (wValue) { | |
1592 | case C_HUB_OVER_CURRENT: | |
1593 | case C_HUB_LOCAL_POWER: | |
1594 | _DBG(0, "C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n"); | |
1595 | break; | |
1596 | default: | |
1597 | goto error; | |
1598 | } | |
1599 | break; | |
1600 | case GetHubDescriptor: | |
1601 | DBG(0, "GetHubDescriptor\n"); | |
1602 | isp1362_hub_descriptor(isp1362_hcd, (struct usb_hub_descriptor *)buf); | |
1603 | break; | |
1604 | case GetHubStatus: | |
1605 | DBG(0, "GetHubStatus\n"); | |
1606 | put_unaligned(cpu_to_le32(0), (__le32 *) buf); | |
1607 | break; | |
1608 | case GetPortStatus: | |
1609 | #ifndef VERBOSE | |
1610 | DBG(0, "GetPortStatus\n"); | |
1611 | #endif | |
1612 | if (!wIndex || wIndex > ports) | |
1613 | goto error; | |
1614 | tmp = isp1362_hcd->rhport[--wIndex]; | |
1615 | put_unaligned(cpu_to_le32(tmp), (__le32 *) buf); | |
1616 | break; | |
1617 | case ClearPortFeature: | |
1618 | DBG(0, "ClearPortFeature: "); | |
1619 | if (!wIndex || wIndex > ports) | |
1620 | goto error; | |
1621 | wIndex--; | |
1622 | ||
1623 | switch (wValue) { | |
1624 | case USB_PORT_FEAT_ENABLE: | |
1625 | _DBG(0, "USB_PORT_FEAT_ENABLE\n"); | |
1626 | tmp = RH_PS_CCS; | |
1627 | break; | |
1628 | case USB_PORT_FEAT_C_ENABLE: | |
1629 | _DBG(0, "USB_PORT_FEAT_C_ENABLE\n"); | |
1630 | tmp = RH_PS_PESC; | |
1631 | break; | |
1632 | case USB_PORT_FEAT_SUSPEND: | |
1633 | _DBG(0, "USB_PORT_FEAT_SUSPEND\n"); | |
1634 | tmp = RH_PS_POCI; | |
1635 | break; | |
1636 | case USB_PORT_FEAT_C_SUSPEND: | |
1637 | _DBG(0, "USB_PORT_FEAT_C_SUSPEND\n"); | |
1638 | tmp = RH_PS_PSSC; | |
1639 | break; | |
1640 | case USB_PORT_FEAT_POWER: | |
1641 | _DBG(0, "USB_PORT_FEAT_POWER\n"); | |
1642 | tmp = RH_PS_LSDA; | |
1643 | ||
1644 | break; | |
1645 | case USB_PORT_FEAT_C_CONNECTION: | |
1646 | _DBG(0, "USB_PORT_FEAT_C_CONNECTION\n"); | |
1647 | tmp = RH_PS_CSC; | |
1648 | break; | |
1649 | case USB_PORT_FEAT_C_OVER_CURRENT: | |
1650 | _DBG(0, "USB_PORT_FEAT_C_OVER_CURRENT\n"); | |
1651 | tmp = RH_PS_OCIC; | |
1652 | break; | |
1653 | case USB_PORT_FEAT_C_RESET: | |
1654 | _DBG(0, "USB_PORT_FEAT_C_RESET\n"); | |
1655 | tmp = RH_PS_PRSC; | |
1656 | break; | |
1657 | default: | |
1658 | goto error; | |
1659 | } | |
1660 | ||
1661 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
1662 | isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, tmp); | |
1663 | isp1362_hcd->rhport[wIndex] = | |
1664 | isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); | |
1665 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
1666 | break; | |
1667 | case SetPortFeature: | |
1668 | DBG(0, "SetPortFeature: "); | |
1669 | if (!wIndex || wIndex > ports) | |
1670 | goto error; | |
1671 | wIndex--; | |
1672 | switch (wValue) { | |
1673 | case USB_PORT_FEAT_SUSPEND: | |
1674 | _DBG(0, "USB_PORT_FEAT_SUSPEND\n"); | |
a9d43091 LW |
1675 | spin_lock_irqsave(&isp1362_hcd->lock, flags); |
1676 | isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PSS); | |
1677 | isp1362_hcd->rhport[wIndex] = | |
1678 | isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); | |
1679 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
1680 | break; | |
1681 | case USB_PORT_FEAT_POWER: | |
1682 | _DBG(0, "USB_PORT_FEAT_POWER\n"); | |
1683 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
1684 | isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PPS); | |
1685 | isp1362_hcd->rhport[wIndex] = | |
1686 | isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); | |
1687 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
1688 | break; | |
1689 | case USB_PORT_FEAT_RESET: | |
1690 | _DBG(0, "USB_PORT_FEAT_RESET\n"); | |
1691 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
1692 | ||
1693 | t1 = jiffies + msecs_to_jiffies(USB_RESET_WIDTH); | |
1694 | while (time_before(jiffies, t1)) { | |
1695 | /* spin until any current reset finishes */ | |
1696 | for (;;) { | |
1697 | tmp = isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); | |
1698 | if (!(tmp & RH_PS_PRS)) | |
1699 | break; | |
1700 | udelay(500); | |
1701 | } | |
1702 | if (!(tmp & RH_PS_CCS)) | |
1703 | break; | |
1704 | /* Reset lasts 10ms (claims datasheet) */ | |
1705 | isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, (RH_PS_PRS)); | |
1706 | ||
1707 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
1708 | msleep(10); | |
1709 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
1710 | } | |
1711 | ||
1712 | isp1362_hcd->rhport[wIndex] = isp1362_read_reg32(isp1362_hcd, | |
1713 | HCRHPORT1 + wIndex); | |
1714 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
1715 | break; | |
1716 | default: | |
1717 | goto error; | |
1718 | } | |
1719 | break; | |
1720 | ||
1721 | default: | |
1722 | error: | |
1723 | /* "protocol stall" on error */ | |
1724 | _DBG(0, "PROTOCOL STALL\n"); | |
1725 | retval = -EPIPE; | |
1726 | } | |
1727 | ||
1728 | return retval; | |
1729 | } | |
1730 | ||
1731 | #ifdef CONFIG_PM | |
1732 | static int isp1362_bus_suspend(struct usb_hcd *hcd) | |
1733 | { | |
1734 | int status = 0; | |
1735 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
1736 | unsigned long flags; | |
1737 | ||
1738 | if (time_before(jiffies, isp1362_hcd->next_statechange)) | |
1739 | msleep(5); | |
1740 | ||
1741 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
1742 | ||
1743 | isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); | |
1744 | switch (isp1362_hcd->hc_control & OHCI_CTRL_HCFS) { | |
1745 | case OHCI_USB_RESUME: | |
1746 | DBG(0, "%s: resume/suspend?\n", __func__); | |
1747 | isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS; | |
1748 | isp1362_hcd->hc_control |= OHCI_USB_RESET; | |
1749 | isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); | |
1750 | /* FALL THROUGH */ | |
1751 | case OHCI_USB_RESET: | |
1752 | status = -EBUSY; | |
1753 | pr_warning("%s: needs reinit!\n", __func__); | |
1754 | goto done; | |
1755 | case OHCI_USB_SUSPEND: | |
1756 | pr_warning("%s: already suspended?\n", __func__); | |
1757 | goto done; | |
1758 | } | |
1759 | DBG(0, "%s: suspend root hub\n", __func__); | |
1760 | ||
1761 | /* First stop any processing */ | |
1762 | hcd->state = HC_STATE_QUIESCING; | |
1763 | if (!list_empty(&isp1362_hcd->atl_queue.active) || | |
1764 | !list_empty(&isp1362_hcd->intl_queue.active) || | |
1765 | !list_empty(&isp1362_hcd->istl_queue[0] .active) || | |
1766 | !list_empty(&isp1362_hcd->istl_queue[1] .active)) { | |
1767 | int limit; | |
1768 | ||
1769 | isp1362_write_reg32(isp1362_hcd, HCATLSKIP, ~0); | |
1770 | isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, ~0); | |
1771 | isp1362_write_reg16(isp1362_hcd, HCBUFSTAT, 0); | |
1772 | isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); | |
1773 | isp1362_write_reg32(isp1362_hcd, HCINTSTAT, OHCI_INTR_SF); | |
1774 | ||
1775 | DBG(0, "%s: stopping schedules ...\n", __func__); | |
1776 | limit = 2000; | |
1777 | while (limit > 0) { | |
1778 | udelay(250); | |
1779 | limit -= 250; | |
1780 | if (isp1362_read_reg32(isp1362_hcd, HCINTSTAT) & OHCI_INTR_SF) | |
1781 | break; | |
1782 | } | |
1783 | mdelay(7); | |
1784 | if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ATL) { | |
1785 | u32 done_map = isp1362_read_reg32(isp1362_hcd, HCATLDONE); | |
1786 | finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->atl_queue); | |
1787 | } | |
1788 | if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_INTL) { | |
1789 | u32 done_map = isp1362_read_reg32(isp1362_hcd, HCINTLDONE); | |
1790 | finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->intl_queue); | |
1791 | } | |
1792 | if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ISTL0) | |
1793 | finish_iso_transfers(isp1362_hcd, &isp1362_hcd->istl_queue[0]); | |
1794 | if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ISTL1) | |
1795 | finish_iso_transfers(isp1362_hcd, &isp1362_hcd->istl_queue[1]); | |
1796 | } | |
1797 | DBG(0, "%s: HCINTSTAT: %08x\n", __func__, | |
1798 | isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); | |
1799 | isp1362_write_reg32(isp1362_hcd, HCINTSTAT, | |
1800 | isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); | |
1801 | ||
1802 | /* Suspend hub */ | |
1803 | isp1362_hcd->hc_control = OHCI_USB_SUSPEND; | |
1804 | isp1362_show_reg(isp1362_hcd, HCCONTROL); | |
1805 | isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); | |
1806 | isp1362_show_reg(isp1362_hcd, HCCONTROL); | |
1807 | ||
1808 | #if 1 | |
1809 | isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); | |
1810 | if ((isp1362_hcd->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_SUSPEND) { | |
1811 | pr_err("%s: controller won't suspend %08x\n", __func__, | |
1812 | isp1362_hcd->hc_control); | |
1813 | status = -EBUSY; | |
1814 | } else | |
1815 | #endif | |
1816 | { | |
1817 | /* no resumes until devices finish suspending */ | |
1818 | isp1362_hcd->next_statechange = jiffies + msecs_to_jiffies(5); | |
1819 | } | |
1820 | done: | |
1821 | if (status == 0) { | |
1822 | hcd->state = HC_STATE_SUSPENDED; | |
1823 | DBG(0, "%s: HCD suspended: %08x\n", __func__, | |
1824 | isp1362_read_reg32(isp1362_hcd, HCCONTROL)); | |
1825 | } | |
1826 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
1827 | return status; | |
1828 | } | |
1829 | ||
1830 | static int isp1362_bus_resume(struct usb_hcd *hcd) | |
1831 | { | |
1832 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
1833 | u32 port; | |
1834 | unsigned long flags; | |
1835 | int status = -EINPROGRESS; | |
1836 | ||
1837 | if (time_before(jiffies, isp1362_hcd->next_statechange)) | |
1838 | msleep(5); | |
1839 | ||
1840 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
1841 | isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); | |
1842 | pr_info("%s: HCCONTROL: %08x\n", __func__, isp1362_hcd->hc_control); | |
1843 | if (hcd->state == HC_STATE_RESUMING) { | |
1844 | pr_warning("%s: duplicate resume\n", __func__); | |
1845 | status = 0; | |
1846 | } else | |
1847 | switch (isp1362_hcd->hc_control & OHCI_CTRL_HCFS) { | |
1848 | case OHCI_USB_SUSPEND: | |
1849 | DBG(0, "%s: resume root hub\n", __func__); | |
1850 | isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS; | |
1851 | isp1362_hcd->hc_control |= OHCI_USB_RESUME; | |
1852 | isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); | |
1853 | break; | |
1854 | case OHCI_USB_RESUME: | |
1855 | /* HCFS changes sometime after INTR_RD */ | |
1856 | DBG(0, "%s: remote wakeup\n", __func__); | |
1857 | break; | |
1858 | case OHCI_USB_OPER: | |
1859 | DBG(0, "%s: odd resume\n", __func__); | |
1860 | status = 0; | |
1861 | hcd->self.root_hub->dev.power.power_state = PMSG_ON; | |
1862 | break; | |
1863 | default: /* RESET, we lost power */ | |
1864 | DBG(0, "%s: root hub hardware reset\n", __func__); | |
1865 | status = -EBUSY; | |
1866 | } | |
1867 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
1868 | if (status == -EBUSY) { | |
1869 | DBG(0, "%s: Restarting HC\n", __func__); | |
1870 | isp1362_hc_stop(hcd); | |
1871 | return isp1362_hc_start(hcd); | |
1872 | } | |
1873 | if (status != -EINPROGRESS) | |
1874 | return status; | |
1875 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
1876 | port = isp1362_read_reg32(isp1362_hcd, HCRHDESCA) & RH_A_NDP; | |
1877 | while (port--) { | |
1878 | u32 stat = isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + port); | |
1879 | ||
1880 | /* force global, not selective, resume */ | |
1881 | if (!(stat & RH_PS_PSS)) { | |
1882 | DBG(0, "%s: Not Resuming RH port %d\n", __func__, port); | |
1883 | continue; | |
1884 | } | |
1885 | DBG(0, "%s: Resuming RH port %d\n", __func__, port); | |
1886 | isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + port, RH_PS_POCI); | |
1887 | } | |
1888 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
1889 | ||
1890 | /* Some controllers (lucent) need extra-long delays */ | |
1891 | hcd->state = HC_STATE_RESUMING; | |
1892 | mdelay(20 /* usb 11.5.1.10 */ + 15); | |
1893 | ||
1894 | isp1362_hcd->hc_control = OHCI_USB_OPER; | |
1895 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
1896 | isp1362_show_reg(isp1362_hcd, HCCONTROL); | |
1897 | isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); | |
1898 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
1899 | /* TRSMRCY */ | |
1900 | msleep(10); | |
1901 | ||
1902 | /* keep it alive for ~5x suspend + resume costs */ | |
1903 | isp1362_hcd->next_statechange = jiffies + msecs_to_jiffies(250); | |
1904 | ||
1905 | hcd->self.root_hub->dev.power.power_state = PMSG_ON; | |
1906 | hcd->state = HC_STATE_RUNNING; | |
1907 | return 0; | |
1908 | } | |
1909 | #else | |
1910 | #define isp1362_bus_suspend NULL | |
1911 | #define isp1362_bus_resume NULL | |
1912 | #endif | |
1913 | ||
1914 | /*-------------------------------------------------------------------------*/ | |
1915 | ||
1916 | #ifdef STUB_DEBUG_FILE | |
1917 | ||
1918 | static inline void create_debug_file(struct isp1362_hcd *isp1362_hcd) | |
1919 | { | |
1920 | } | |
1921 | static inline void remove_debug_file(struct isp1362_hcd *isp1362_hcd) | |
1922 | { | |
1923 | } | |
1924 | ||
1925 | #else | |
1926 | ||
1927 | #include <linux/proc_fs.h> | |
1928 | #include <linux/seq_file.h> | |
1929 | ||
1930 | static void dump_irq(struct seq_file *s, char *label, u16 mask) | |
1931 | { | |
1932 | seq_printf(s, "%-15s %04x%s%s%s%s%s%s\n", label, mask, | |
1933 | mask & HCuPINT_CLKRDY ? " clkrdy" : "", | |
1934 | mask & HCuPINT_SUSP ? " susp" : "", | |
1935 | mask & HCuPINT_OPR ? " opr" : "", | |
1936 | mask & HCuPINT_EOT ? " eot" : "", | |
1937 | mask & HCuPINT_ATL ? " atl" : "", | |
1938 | mask & HCuPINT_SOF ? " sof" : ""); | |
1939 | } | |
1940 | ||
1941 | static void dump_int(struct seq_file *s, char *label, u32 mask) | |
1942 | { | |
1943 | seq_printf(s, "%-15s %08x%s%s%s%s%s%s%s\n", label, mask, | |
1944 | mask & OHCI_INTR_MIE ? " MIE" : "", | |
1945 | mask & OHCI_INTR_RHSC ? " rhsc" : "", | |
1946 | mask & OHCI_INTR_FNO ? " fno" : "", | |
1947 | mask & OHCI_INTR_UE ? " ue" : "", | |
1948 | mask & OHCI_INTR_RD ? " rd" : "", | |
1949 | mask & OHCI_INTR_SF ? " sof" : "", | |
1950 | mask & OHCI_INTR_SO ? " so" : ""); | |
1951 | } | |
1952 | ||
1953 | static void dump_ctrl(struct seq_file *s, char *label, u32 mask) | |
1954 | { | |
1955 | seq_printf(s, "%-15s %08x%s%s%s\n", label, mask, | |
1956 | mask & OHCI_CTRL_RWC ? " rwc" : "", | |
1957 | mask & OHCI_CTRL_RWE ? " rwe" : "", | |
1958 | ({ | |
1959 | char *hcfs; | |
1960 | switch (mask & OHCI_CTRL_HCFS) { | |
1961 | case OHCI_USB_OPER: | |
1962 | hcfs = " oper"; | |
1963 | break; | |
1964 | case OHCI_USB_RESET: | |
1965 | hcfs = " reset"; | |
1966 | break; | |
1967 | case OHCI_USB_RESUME: | |
1968 | hcfs = " resume"; | |
1969 | break; | |
1970 | case OHCI_USB_SUSPEND: | |
1971 | hcfs = " suspend"; | |
1972 | break; | |
1973 | default: | |
1974 | hcfs = " ?"; | |
1975 | } | |
1976 | hcfs; | |
1977 | })); | |
1978 | } | |
1979 | ||
1980 | static void dump_regs(struct seq_file *s, struct isp1362_hcd *isp1362_hcd) | |
1981 | { | |
1982 | seq_printf(s, "HCREVISION [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCREVISION), | |
1983 | isp1362_read_reg32(isp1362_hcd, HCREVISION)); | |
1984 | seq_printf(s, "HCCONTROL [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCCONTROL), | |
1985 | isp1362_read_reg32(isp1362_hcd, HCCONTROL)); | |
1986 | seq_printf(s, "HCCMDSTAT [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCCMDSTAT), | |
1987 | isp1362_read_reg32(isp1362_hcd, HCCMDSTAT)); | |
1988 | seq_printf(s, "HCINTSTAT [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTSTAT), | |
1989 | isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); | |
1990 | seq_printf(s, "HCINTENB [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTENB), | |
1991 | isp1362_read_reg32(isp1362_hcd, HCINTENB)); | |
1992 | seq_printf(s, "HCFMINTVL [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMINTVL), | |
1993 | isp1362_read_reg32(isp1362_hcd, HCFMINTVL)); | |
1994 | seq_printf(s, "HCFMREM [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMREM), | |
1995 | isp1362_read_reg32(isp1362_hcd, HCFMREM)); | |
1996 | seq_printf(s, "HCFMNUM [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMNUM), | |
1997 | isp1362_read_reg32(isp1362_hcd, HCFMNUM)); | |
1998 | seq_printf(s, "HCLSTHRESH [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCLSTHRESH), | |
1999 | isp1362_read_reg32(isp1362_hcd, HCLSTHRESH)); | |
2000 | seq_printf(s, "HCRHDESCA [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHDESCA), | |
2001 | isp1362_read_reg32(isp1362_hcd, HCRHDESCA)); | |
2002 | seq_printf(s, "HCRHDESCB [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHDESCB), | |
2003 | isp1362_read_reg32(isp1362_hcd, HCRHDESCB)); | |
2004 | seq_printf(s, "HCRHSTATUS [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHSTATUS), | |
2005 | isp1362_read_reg32(isp1362_hcd, HCRHSTATUS)); | |
2006 | seq_printf(s, "HCRHPORT1 [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHPORT1), | |
2007 | isp1362_read_reg32(isp1362_hcd, HCRHPORT1)); | |
2008 | seq_printf(s, "HCRHPORT2 [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHPORT2), | |
2009 | isp1362_read_reg32(isp1362_hcd, HCRHPORT2)); | |
2010 | seq_printf(s, "\n"); | |
2011 | seq_printf(s, "HCHWCFG [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCHWCFG), | |
2012 | isp1362_read_reg16(isp1362_hcd, HCHWCFG)); | |
2013 | seq_printf(s, "HCDMACFG [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCDMACFG), | |
2014 | isp1362_read_reg16(isp1362_hcd, HCDMACFG)); | |
2015 | seq_printf(s, "HCXFERCTR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCXFERCTR), | |
2016 | isp1362_read_reg16(isp1362_hcd, HCXFERCTR)); | |
2017 | seq_printf(s, "HCuPINT [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCuPINT), | |
2018 | isp1362_read_reg16(isp1362_hcd, HCuPINT)); | |
2019 | seq_printf(s, "HCuPINTENB [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCuPINTENB), | |
2020 | isp1362_read_reg16(isp1362_hcd, HCuPINTENB)); | |
2021 | seq_printf(s, "HCCHIPID [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCCHIPID), | |
2022 | isp1362_read_reg16(isp1362_hcd, HCCHIPID)); | |
2023 | seq_printf(s, "HCSCRATCH [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCSCRATCH), | |
2024 | isp1362_read_reg16(isp1362_hcd, HCSCRATCH)); | |
2025 | seq_printf(s, "HCBUFSTAT [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCBUFSTAT), | |
2026 | isp1362_read_reg16(isp1362_hcd, HCBUFSTAT)); | |
2027 | seq_printf(s, "HCDIRADDR [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCDIRADDR), | |
2028 | isp1362_read_reg32(isp1362_hcd, HCDIRADDR)); | |
2029 | #if 0 | |
2030 | seq_printf(s, "HCDIRDATA [%02x] %04x\n", ISP1362_REG_NO(HCDIRDATA), | |
2031 | isp1362_read_reg16(isp1362_hcd, HCDIRDATA)); | |
2032 | #endif | |
2033 | seq_printf(s, "HCISTLBUFSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCISTLBUFSZ), | |
2034 | isp1362_read_reg16(isp1362_hcd, HCISTLBUFSZ)); | |
2035 | seq_printf(s, "HCISTLRATE [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCISTLRATE), | |
2036 | isp1362_read_reg16(isp1362_hcd, HCISTLRATE)); | |
2037 | seq_printf(s, "\n"); | |
2038 | seq_printf(s, "HCINTLBUFSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLBUFSZ), | |
2039 | isp1362_read_reg16(isp1362_hcd, HCINTLBUFSZ)); | |
2040 | seq_printf(s, "HCINTLBLKSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLBLKSZ), | |
2041 | isp1362_read_reg16(isp1362_hcd, HCINTLBLKSZ)); | |
2042 | seq_printf(s, "HCINTLDONE [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLDONE), | |
2043 | isp1362_read_reg32(isp1362_hcd, HCINTLDONE)); | |
2044 | seq_printf(s, "HCINTLSKIP [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLSKIP), | |
2045 | isp1362_read_reg32(isp1362_hcd, HCINTLSKIP)); | |
2046 | seq_printf(s, "HCINTLLAST [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLLAST), | |
2047 | isp1362_read_reg32(isp1362_hcd, HCINTLLAST)); | |
2048 | seq_printf(s, "HCINTLCURR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLCURR), | |
2049 | isp1362_read_reg16(isp1362_hcd, HCINTLCURR)); | |
2050 | seq_printf(s, "\n"); | |
2051 | seq_printf(s, "HCATLBUFSZ [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLBUFSZ), | |
2052 | isp1362_read_reg16(isp1362_hcd, HCATLBUFSZ)); | |
2053 | seq_printf(s, "HCATLBLKSZ [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLBLKSZ), | |
2054 | isp1362_read_reg16(isp1362_hcd, HCATLBLKSZ)); | |
2055 | #if 0 | |
2056 | seq_printf(s, "HCATLDONE [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDONE), | |
2057 | isp1362_read_reg32(isp1362_hcd, HCATLDONE)); | |
2058 | #endif | |
2059 | seq_printf(s, "HCATLSKIP [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLSKIP), | |
2060 | isp1362_read_reg32(isp1362_hcd, HCATLSKIP)); | |
2061 | seq_printf(s, "HCATLLAST [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLLAST), | |
2062 | isp1362_read_reg32(isp1362_hcd, HCATLLAST)); | |
2063 | seq_printf(s, "HCATLCURR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLCURR), | |
2064 | isp1362_read_reg16(isp1362_hcd, HCATLCURR)); | |
2065 | seq_printf(s, "\n"); | |
2066 | seq_printf(s, "HCATLDTC [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDTC), | |
2067 | isp1362_read_reg16(isp1362_hcd, HCATLDTC)); | |
2068 | seq_printf(s, "HCATLDTCTO [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDTCTO), | |
2069 | isp1362_read_reg16(isp1362_hcd, HCATLDTCTO)); | |
2070 | } | |
2071 | ||
2072 | static int proc_isp1362_show(struct seq_file *s, void *unused) | |
2073 | { | |
2074 | struct isp1362_hcd *isp1362_hcd = s->private; | |
2075 | struct isp1362_ep *ep; | |
2076 | int i; | |
2077 | ||
2078 | seq_printf(s, "%s\n%s version %s\n", | |
2079 | isp1362_hcd_to_hcd(isp1362_hcd)->product_desc, hcd_name, DRIVER_VERSION); | |
2080 | ||
2081 | /* collect statistics to help estimate potential win for | |
2082 | * DMA engines that care about alignment (PXA) | |
2083 | */ | |
2084 | seq_printf(s, "alignment: 16b/%ld 8b/%ld 4b/%ld 2b/%ld 1b/%ld\n", | |
2085 | isp1362_hcd->stat16, isp1362_hcd->stat8, isp1362_hcd->stat4, | |
2086 | isp1362_hcd->stat2, isp1362_hcd->stat1); | |
2087 | seq_printf(s, "max # ptds in ATL fifo: %d\n", isp1362_hcd->atl_queue.stat_maxptds); | |
2088 | seq_printf(s, "max # ptds in INTL fifo: %d\n", isp1362_hcd->intl_queue.stat_maxptds); | |
2089 | seq_printf(s, "max # ptds in ISTL fifo: %d\n", | |
2090 | max(isp1362_hcd->istl_queue[0] .stat_maxptds, | |
2091 | isp1362_hcd->istl_queue[1] .stat_maxptds)); | |
2092 | ||
2093 | /* FIXME: don't show the following in suspended state */ | |
2094 | spin_lock_irq(&isp1362_hcd->lock); | |
2095 | ||
2096 | dump_irq(s, "hc_irq_enable", isp1362_read_reg16(isp1362_hcd, HCuPINTENB)); | |
2097 | dump_irq(s, "hc_irq_status", isp1362_read_reg16(isp1362_hcd, HCuPINT)); | |
2098 | dump_int(s, "ohci_int_enable", isp1362_read_reg32(isp1362_hcd, HCINTENB)); | |
2099 | dump_int(s, "ohci_int_status", isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); | |
2100 | dump_ctrl(s, "ohci_control", isp1362_read_reg32(isp1362_hcd, HCCONTROL)); | |
2101 | ||
2102 | for (i = 0; i < NUM_ISP1362_IRQS; i++) | |
2103 | if (isp1362_hcd->irq_stat[i]) | |
2104 | seq_printf(s, "%-15s: %d\n", | |
2105 | ISP1362_INT_NAME(i), isp1362_hcd->irq_stat[i]); | |
2106 | ||
2107 | dump_regs(s, isp1362_hcd); | |
2108 | list_for_each_entry(ep, &isp1362_hcd->async, schedule) { | |
2109 | struct urb *urb; | |
2110 | ||
2111 | seq_printf(s, "%p, ep%d%s, maxpacket %d:\n", ep, ep->epnum, | |
2112 | ({ | |
2113 | char *s; | |
2114 | switch (ep->nextpid) { | |
2115 | case USB_PID_IN: | |
2116 | s = "in"; | |
2117 | break; | |
2118 | case USB_PID_OUT: | |
2119 | s = "out"; | |
2120 | break; | |
2121 | case USB_PID_SETUP: | |
2122 | s = "setup"; | |
2123 | break; | |
2124 | case USB_PID_ACK: | |
2125 | s = "status"; | |
2126 | break; | |
2127 | default: | |
2128 | s = "?"; | |
2129 | break; | |
2130 | }; | |
2131 | s;}), ep->maxpacket) ; | |
2132 | list_for_each_entry(urb, &ep->hep->urb_list, urb_list) { | |
2133 | seq_printf(s, " urb%p, %d/%d\n", urb, | |
2134 | urb->actual_length, | |
2135 | urb->transfer_buffer_length); | |
2136 | } | |
2137 | } | |
2138 | if (!list_empty(&isp1362_hcd->async)) | |
2139 | seq_printf(s, "\n"); | |
2140 | dump_ptd_queue(&isp1362_hcd->atl_queue); | |
2141 | ||
2142 | seq_printf(s, "periodic size= %d\n", PERIODIC_SIZE); | |
2143 | ||
2144 | list_for_each_entry(ep, &isp1362_hcd->periodic, schedule) { | |
2145 | seq_printf(s, "branch:%2d load:%3d PTD[%d] $%04x:\n", ep->branch, | |
2146 | isp1362_hcd->load[ep->branch], ep->ptd_index, ep->ptd_offset); | |
2147 | ||
2148 | seq_printf(s, " %d/%p (%sdev%d ep%d%s max %d)\n", | |
2149 | ep->interval, ep, | |
2150 | (ep->udev->speed == USB_SPEED_FULL) ? "" : "ls ", | |
2151 | ep->udev->devnum, ep->epnum, | |
2152 | (ep->epnum == 0) ? "" : | |
2153 | ((ep->nextpid == USB_PID_IN) ? | |
2154 | "in" : "out"), ep->maxpacket); | |
2155 | } | |
2156 | dump_ptd_queue(&isp1362_hcd->intl_queue); | |
2157 | ||
2158 | seq_printf(s, "ISO:\n"); | |
2159 | ||
2160 | list_for_each_entry(ep, &isp1362_hcd->isoc, schedule) { | |
2161 | seq_printf(s, " %d/%p (%sdev%d ep%d%s max %d)\n", | |
2162 | ep->interval, ep, | |
2163 | (ep->udev->speed == USB_SPEED_FULL) ? "" : "ls ", | |
2164 | ep->udev->devnum, ep->epnum, | |
2165 | (ep->epnum == 0) ? "" : | |
2166 | ((ep->nextpid == USB_PID_IN) ? | |
2167 | "in" : "out"), ep->maxpacket); | |
2168 | } | |
2169 | ||
2170 | spin_unlock_irq(&isp1362_hcd->lock); | |
2171 | seq_printf(s, "\n"); | |
2172 | ||
2173 | return 0; | |
2174 | } | |
2175 | ||
2176 | static int proc_isp1362_open(struct inode *inode, struct file *file) | |
2177 | { | |
2178 | return single_open(file, proc_isp1362_show, PDE(inode)->data); | |
2179 | } | |
2180 | ||
2181 | static const struct file_operations proc_ops = { | |
2182 | .open = proc_isp1362_open, | |
2183 | .read = seq_read, | |
2184 | .llseek = seq_lseek, | |
2185 | .release = single_release, | |
2186 | }; | |
2187 | ||
2188 | /* expect just one isp1362_hcd per system */ | |
2189 | static const char proc_filename[] = "driver/isp1362"; | |
2190 | ||
2191 | static void create_debug_file(struct isp1362_hcd *isp1362_hcd) | |
2192 | { | |
2193 | struct proc_dir_entry *pde; | |
2194 | ||
2195 | pde = create_proc_entry(proc_filename, 0, NULL); | |
2196 | if (pde == NULL) { | |
2197 | pr_warning("%s: Failed to create debug file '%s'\n", __func__, proc_filename); | |
2198 | return; | |
2199 | } | |
2200 | ||
2201 | pde->proc_fops = &proc_ops; | |
2202 | pde->data = isp1362_hcd; | |
2203 | isp1362_hcd->pde = pde; | |
2204 | } | |
2205 | ||
2206 | static void remove_debug_file(struct isp1362_hcd *isp1362_hcd) | |
2207 | { | |
2208 | if (isp1362_hcd->pde) | |
326b4810 | 2209 | remove_proc_entry(proc_filename, NULL); |
a9d43091 LW |
2210 | } |
2211 | ||
2212 | #endif | |
2213 | ||
2214 | /*-------------------------------------------------------------------------*/ | |
2215 | ||
1c815577 | 2216 | static void __isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd) |
a9d43091 LW |
2217 | { |
2218 | int tmp = 20; | |
a9d43091 LW |
2219 | |
2220 | isp1362_write_reg16(isp1362_hcd, HCSWRES, HCSWRES_MAGIC); | |
2221 | isp1362_write_reg32(isp1362_hcd, HCCMDSTAT, OHCI_HCR); | |
2222 | while (--tmp) { | |
2223 | mdelay(1); | |
2224 | if (!(isp1362_read_reg32(isp1362_hcd, HCCMDSTAT) & OHCI_HCR)) | |
2225 | break; | |
2226 | } | |
2227 | if (!tmp) | |
2228 | pr_err("Software reset timeout\n"); | |
1c815577 JS |
2229 | } |
2230 | ||
2231 | static void isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd) | |
2232 | { | |
2233 | unsigned long flags; | |
2234 | ||
2235 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
2236 | __isp1362_sw_reset(isp1362_hcd); | |
a9d43091 LW |
2237 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
2238 | } | |
2239 | ||
2240 | static int isp1362_mem_config(struct usb_hcd *hcd) | |
2241 | { | |
2242 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
2243 | unsigned long flags; | |
2244 | u32 total; | |
2245 | u16 istl_size = ISP1362_ISTL_BUFSIZE; | |
2246 | u16 intl_blksize = ISP1362_INTL_BLKSIZE + PTD_HEADER_SIZE; | |
2247 | u16 intl_size = ISP1362_INTL_BUFFERS * intl_blksize; | |
2248 | u16 atl_blksize = ISP1362_ATL_BLKSIZE + PTD_HEADER_SIZE; | |
2249 | u16 atl_buffers = (ISP1362_BUF_SIZE - (istl_size + intl_size)) / atl_blksize; | |
2250 | u16 atl_size; | |
2251 | int i; | |
2252 | ||
2253 | WARN_ON(istl_size & 3); | |
2254 | WARN_ON(atl_blksize & 3); | |
2255 | WARN_ON(intl_blksize & 3); | |
2256 | WARN_ON(atl_blksize < PTD_HEADER_SIZE); | |
2257 | WARN_ON(intl_blksize < PTD_HEADER_SIZE); | |
2258 | ||
2259 | BUG_ON((unsigned)ISP1362_INTL_BUFFERS > 32); | |
2260 | if (atl_buffers > 32) | |
2261 | atl_buffers = 32; | |
2262 | atl_size = atl_buffers * atl_blksize; | |
2263 | total = atl_size + intl_size + istl_size; | |
2264 | dev_info(hcd->self.controller, "ISP1362 Memory usage:\n"); | |
2265 | dev_info(hcd->self.controller, " ISTL: 2 * %4d: %4d @ $%04x:$%04x\n", | |
2266 | istl_size / 2, istl_size, 0, istl_size / 2); | |
96b85179 | 2267 | dev_info(hcd->self.controller, " INTL: %4d * (%3zu+8): %4d @ $%04x\n", |
a9d43091 LW |
2268 | ISP1362_INTL_BUFFERS, intl_blksize - PTD_HEADER_SIZE, |
2269 | intl_size, istl_size); | |
96b85179 | 2270 | dev_info(hcd->self.controller, " ATL : %4d * (%3zu+8): %4d @ $%04x\n", |
a9d43091 LW |
2271 | atl_buffers, atl_blksize - PTD_HEADER_SIZE, |
2272 | atl_size, istl_size + intl_size); | |
2273 | dev_info(hcd->self.controller, " USED/FREE: %4d %4d\n", total, | |
2274 | ISP1362_BUF_SIZE - total); | |
2275 | ||
2276 | if (total > ISP1362_BUF_SIZE) { | |
2277 | dev_err(hcd->self.controller, "%s: Memory requested: %d, available %d\n", | |
2278 | __func__, total, ISP1362_BUF_SIZE); | |
2279 | return -ENOMEM; | |
2280 | } | |
2281 | ||
2282 | total = istl_size + intl_size + atl_size; | |
2283 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
2284 | ||
2285 | for (i = 0; i < 2; i++) { | |
2286 | isp1362_hcd->istl_queue[i].buf_start = i * istl_size / 2, | |
2287 | isp1362_hcd->istl_queue[i].buf_size = istl_size / 2; | |
2288 | isp1362_hcd->istl_queue[i].blk_size = 4; | |
2289 | INIT_LIST_HEAD(&isp1362_hcd->istl_queue[i].active); | |
2290 | snprintf(isp1362_hcd->istl_queue[i].name, | |
2291 | sizeof(isp1362_hcd->istl_queue[i].name), "ISTL%d", i); | |
2292 | DBG(3, "%s: %5s buf $%04x %d\n", __func__, | |
2293 | isp1362_hcd->istl_queue[i].name, | |
2294 | isp1362_hcd->istl_queue[i].buf_start, | |
2295 | isp1362_hcd->istl_queue[i].buf_size); | |
2296 | } | |
2297 | isp1362_write_reg16(isp1362_hcd, HCISTLBUFSZ, istl_size / 2); | |
2298 | ||
2299 | isp1362_hcd->intl_queue.buf_start = istl_size; | |
2300 | isp1362_hcd->intl_queue.buf_size = intl_size; | |
2301 | isp1362_hcd->intl_queue.buf_count = ISP1362_INTL_BUFFERS; | |
2302 | isp1362_hcd->intl_queue.blk_size = intl_blksize; | |
2303 | isp1362_hcd->intl_queue.buf_avail = isp1362_hcd->intl_queue.buf_count; | |
2304 | isp1362_hcd->intl_queue.skip_map = ~0; | |
2305 | INIT_LIST_HEAD(&isp1362_hcd->intl_queue.active); | |
2306 | ||
2307 | isp1362_write_reg16(isp1362_hcd, HCINTLBUFSZ, | |
2308 | isp1362_hcd->intl_queue.buf_size); | |
2309 | isp1362_write_reg16(isp1362_hcd, HCINTLBLKSZ, | |
2310 | isp1362_hcd->intl_queue.blk_size - PTD_HEADER_SIZE); | |
2311 | isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, ~0); | |
2312 | isp1362_write_reg32(isp1362_hcd, HCINTLLAST, | |
2313 | 1 << (ISP1362_INTL_BUFFERS - 1)); | |
2314 | ||
2315 | isp1362_hcd->atl_queue.buf_start = istl_size + intl_size; | |
2316 | isp1362_hcd->atl_queue.buf_size = atl_size; | |
2317 | isp1362_hcd->atl_queue.buf_count = atl_buffers; | |
2318 | isp1362_hcd->atl_queue.blk_size = atl_blksize; | |
2319 | isp1362_hcd->atl_queue.buf_avail = isp1362_hcd->atl_queue.buf_count; | |
2320 | isp1362_hcd->atl_queue.skip_map = ~0; | |
2321 | INIT_LIST_HEAD(&isp1362_hcd->atl_queue.active); | |
2322 | ||
2323 | isp1362_write_reg16(isp1362_hcd, HCATLBUFSZ, | |
2324 | isp1362_hcd->atl_queue.buf_size); | |
2325 | isp1362_write_reg16(isp1362_hcd, HCATLBLKSZ, | |
2326 | isp1362_hcd->atl_queue.blk_size - PTD_HEADER_SIZE); | |
2327 | isp1362_write_reg32(isp1362_hcd, HCATLSKIP, ~0); | |
2328 | isp1362_write_reg32(isp1362_hcd, HCATLLAST, | |
2329 | 1 << (atl_buffers - 1)); | |
2330 | ||
2331 | snprintf(isp1362_hcd->atl_queue.name, | |
2332 | sizeof(isp1362_hcd->atl_queue.name), "ATL"); | |
2333 | snprintf(isp1362_hcd->intl_queue.name, | |
2334 | sizeof(isp1362_hcd->intl_queue.name), "INTL"); | |
2335 | DBG(3, "%s: %5s buf $%04x %2d * %4d = %4d\n", __func__, | |
2336 | isp1362_hcd->intl_queue.name, | |
2337 | isp1362_hcd->intl_queue.buf_start, | |
2338 | ISP1362_INTL_BUFFERS, isp1362_hcd->intl_queue.blk_size, | |
2339 | isp1362_hcd->intl_queue.buf_size); | |
2340 | DBG(3, "%s: %5s buf $%04x %2d * %4d = %4d\n", __func__, | |
2341 | isp1362_hcd->atl_queue.name, | |
2342 | isp1362_hcd->atl_queue.buf_start, | |
2343 | atl_buffers, isp1362_hcd->atl_queue.blk_size, | |
2344 | isp1362_hcd->atl_queue.buf_size); | |
2345 | ||
2346 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
2347 | ||
2348 | return 0; | |
2349 | } | |
2350 | ||
2351 | static int isp1362_hc_reset(struct usb_hcd *hcd) | |
2352 | { | |
2353 | int ret = 0; | |
2354 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
2355 | unsigned long t; | |
2356 | unsigned long timeout = 100; | |
2357 | unsigned long flags; | |
2358 | int clkrdy = 0; | |
2359 | ||
2360 | pr_info("%s:\n", __func__); | |
2361 | ||
2362 | if (isp1362_hcd->board && isp1362_hcd->board->reset) { | |
2363 | isp1362_hcd->board->reset(hcd->self.controller, 1); | |
2364 | msleep(20); | |
2365 | if (isp1362_hcd->board->clock) | |
2366 | isp1362_hcd->board->clock(hcd->self.controller, 1); | |
2367 | isp1362_hcd->board->reset(hcd->self.controller, 0); | |
2368 | } else | |
2369 | isp1362_sw_reset(isp1362_hcd); | |
2370 | ||
2371 | /* chip has been reset. First we need to see a clock */ | |
2372 | t = jiffies + msecs_to_jiffies(timeout); | |
2373 | while (!clkrdy && time_before_eq(jiffies, t)) { | |
2374 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
2375 | clkrdy = isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_CLKRDY; | |
2376 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
2377 | if (!clkrdy) | |
2378 | msleep(4); | |
2379 | } | |
2380 | ||
2381 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
2382 | isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_CLKRDY); | |
2383 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
2384 | if (!clkrdy) { | |
2385 | pr_err("Clock not ready after %lums\n", timeout); | |
2386 | ret = -ENODEV; | |
2387 | } | |
2388 | return ret; | |
2389 | } | |
2390 | ||
2391 | static void isp1362_hc_stop(struct usb_hcd *hcd) | |
2392 | { | |
2393 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
2394 | unsigned long flags; | |
2395 | u32 tmp; | |
2396 | ||
2397 | pr_info("%s:\n", __func__); | |
2398 | ||
2399 | del_timer_sync(&hcd->rh_timer); | |
2400 | ||
2401 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
2402 | ||
2403 | isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); | |
2404 | ||
2405 | /* Switch off power for all ports */ | |
2406 | tmp = isp1362_read_reg32(isp1362_hcd, HCRHDESCA); | |
2407 | tmp &= ~(RH_A_NPS | RH_A_PSM); | |
2408 | isp1362_write_reg32(isp1362_hcd, HCRHDESCA, tmp); | |
2409 | isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPS); | |
2410 | ||
2411 | /* Reset the chip */ | |
2412 | if (isp1362_hcd->board && isp1362_hcd->board->reset) | |
2413 | isp1362_hcd->board->reset(hcd->self.controller, 1); | |
2414 | else | |
1c815577 | 2415 | __isp1362_sw_reset(isp1362_hcd); |
a9d43091 LW |
2416 | |
2417 | if (isp1362_hcd->board && isp1362_hcd->board->clock) | |
2418 | isp1362_hcd->board->clock(hcd->self.controller, 0); | |
2419 | ||
2420 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
2421 | } | |
2422 | ||
2423 | #ifdef CHIP_BUFFER_TEST | |
2424 | static int isp1362_chip_test(struct isp1362_hcd *isp1362_hcd) | |
2425 | { | |
2426 | int ret = 0; | |
2427 | u16 *ref; | |
2428 | unsigned long flags; | |
2429 | ||
2430 | ref = kmalloc(2 * ISP1362_BUF_SIZE, GFP_KERNEL); | |
2431 | if (ref) { | |
2432 | int offset; | |
2433 | u16 *tst = &ref[ISP1362_BUF_SIZE / 2]; | |
2434 | ||
2435 | for (offset = 0; offset < ISP1362_BUF_SIZE / 2; offset++) { | |
2436 | ref[offset] = ~offset; | |
2437 | tst[offset] = offset; | |
2438 | } | |
2439 | ||
2440 | for (offset = 0; offset < 4; offset++) { | |
2441 | int j; | |
2442 | ||
2443 | for (j = 0; j < 8; j++) { | |
2444 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
2445 | isp1362_write_buffer(isp1362_hcd, (u8 *)ref + offset, 0, j); | |
2446 | isp1362_read_buffer(isp1362_hcd, (u8 *)tst + offset, 0, j); | |
2447 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
2448 | ||
2449 | if (memcmp(ref, tst, j)) { | |
2450 | ret = -ENODEV; | |
2451 | pr_err("%s: memory check with %d byte offset %d failed\n", | |
2452 | __func__, j, offset); | |
2453 | dump_data((u8 *)ref + offset, j); | |
2454 | dump_data((u8 *)tst + offset, j); | |
2455 | } | |
2456 | } | |
2457 | } | |
2458 | ||
2459 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
2460 | isp1362_write_buffer(isp1362_hcd, ref, 0, ISP1362_BUF_SIZE); | |
2461 | isp1362_read_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); | |
2462 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
2463 | ||
2464 | if (memcmp(ref, tst, ISP1362_BUF_SIZE)) { | |
2465 | ret = -ENODEV; | |
2466 | pr_err("%s: memory check failed\n", __func__); | |
2467 | dump_data((u8 *)tst, ISP1362_BUF_SIZE / 2); | |
2468 | } | |
2469 | ||
2470 | for (offset = 0; offset < 256; offset++) { | |
2471 | int test_size = 0; | |
2472 | ||
2473 | yield(); | |
2474 | ||
2475 | memset(tst, 0, ISP1362_BUF_SIZE); | |
2476 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
2477 | isp1362_write_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); | |
2478 | isp1362_read_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); | |
2479 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
2480 | if (memcmp(tst, tst + (ISP1362_BUF_SIZE / (2 * sizeof(*tst))), | |
2481 | ISP1362_BUF_SIZE / 2)) { | |
2482 | pr_err("%s: Failed to clear buffer\n", __func__); | |
2483 | dump_data((u8 *)tst, ISP1362_BUF_SIZE); | |
2484 | break; | |
2485 | } | |
2486 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
2487 | isp1362_write_buffer(isp1362_hcd, ref, offset * 2, PTD_HEADER_SIZE); | |
2488 | isp1362_write_buffer(isp1362_hcd, ref + PTD_HEADER_SIZE / sizeof(*ref), | |
2489 | offset * 2 + PTD_HEADER_SIZE, test_size); | |
2490 | isp1362_read_buffer(isp1362_hcd, tst, offset * 2, | |
2491 | PTD_HEADER_SIZE + test_size); | |
2492 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
2493 | if (memcmp(ref, tst, PTD_HEADER_SIZE + test_size)) { | |
2494 | dump_data(((u8 *)ref) + offset, PTD_HEADER_SIZE + test_size); | |
2495 | dump_data((u8 *)tst, PTD_HEADER_SIZE + test_size); | |
2496 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
2497 | isp1362_read_buffer(isp1362_hcd, tst, offset * 2, | |
2498 | PTD_HEADER_SIZE + test_size); | |
2499 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
2500 | if (memcmp(ref, tst, PTD_HEADER_SIZE + test_size)) { | |
2501 | ret = -ENODEV; | |
2502 | pr_err("%s: memory check with offset %02x failed\n", | |
2503 | __func__, offset); | |
2504 | break; | |
2505 | } | |
2506 | pr_warning("%s: memory check with offset %02x ok after second read\n", | |
2507 | __func__, offset); | |
2508 | } | |
2509 | } | |
2510 | kfree(ref); | |
2511 | } | |
2512 | return ret; | |
2513 | } | |
2514 | #endif | |
2515 | ||
2516 | static int isp1362_hc_start(struct usb_hcd *hcd) | |
2517 | { | |
2518 | int ret; | |
2519 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
2520 | struct isp1362_platform_data *board = isp1362_hcd->board; | |
2521 | u16 hwcfg; | |
2522 | u16 chipid; | |
2523 | unsigned long flags; | |
2524 | ||
2525 | pr_info("%s:\n", __func__); | |
2526 | ||
2527 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
2528 | chipid = isp1362_read_reg16(isp1362_hcd, HCCHIPID); | |
2529 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
2530 | ||
2531 | if ((chipid & HCCHIPID_MASK) != HCCHIPID_MAGIC) { | |
2532 | pr_err("%s: Invalid chip ID %04x\n", __func__, chipid); | |
2533 | return -ENODEV; | |
2534 | } | |
2535 | ||
2536 | #ifdef CHIP_BUFFER_TEST | |
2537 | ret = isp1362_chip_test(isp1362_hcd); | |
2538 | if (ret) | |
2539 | return -ENODEV; | |
2540 | #endif | |
2541 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
2542 | /* clear interrupt status and disable all interrupt sources */ | |
2543 | isp1362_write_reg16(isp1362_hcd, HCuPINT, 0xff); | |
2544 | isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); | |
2545 | ||
2546 | /* HW conf */ | |
2547 | hwcfg = HCHWCFG_INT_ENABLE | HCHWCFG_DBWIDTH(1); | |
2548 | if (board->sel15Kres) | |
2549 | hwcfg |= HCHWCFG_PULLDOWN_DS2 | | |
7949f4e1 | 2550 | ((MAX_ROOT_PORTS > 1) ? HCHWCFG_PULLDOWN_DS1 : 0); |
a9d43091 LW |
2551 | if (board->clknotstop) |
2552 | hwcfg |= HCHWCFG_CLKNOTSTOP; | |
2553 | if (board->oc_enable) | |
2554 | hwcfg |= HCHWCFG_ANALOG_OC; | |
2555 | if (board->int_act_high) | |
2556 | hwcfg |= HCHWCFG_INT_POL; | |
2557 | if (board->int_edge_triggered) | |
2558 | hwcfg |= HCHWCFG_INT_TRIGGER; | |
2559 | if (board->dreq_act_high) | |
2560 | hwcfg |= HCHWCFG_DREQ_POL; | |
2561 | if (board->dack_act_high) | |
2562 | hwcfg |= HCHWCFG_DACK_POL; | |
2563 | isp1362_write_reg16(isp1362_hcd, HCHWCFG, hwcfg); | |
2564 | isp1362_show_reg(isp1362_hcd, HCHWCFG); | |
2565 | isp1362_write_reg16(isp1362_hcd, HCDMACFG, 0); | |
2566 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
2567 | ||
2568 | ret = isp1362_mem_config(hcd); | |
2569 | if (ret) | |
2570 | return ret; | |
2571 | ||
2572 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
2573 | ||
2574 | /* Root hub conf */ | |
2575 | isp1362_hcd->rhdesca = 0; | |
2576 | if (board->no_power_switching) | |
2577 | isp1362_hcd->rhdesca |= RH_A_NPS; | |
2578 | if (board->power_switching_mode) | |
2579 | isp1362_hcd->rhdesca |= RH_A_PSM; | |
2580 | if (board->potpg) | |
2581 | isp1362_hcd->rhdesca |= (board->potpg << 24) & RH_A_POTPGT; | |
2582 | else | |
2583 | isp1362_hcd->rhdesca |= (25 << 24) & RH_A_POTPGT; | |
2584 | ||
2585 | isp1362_write_reg32(isp1362_hcd, HCRHDESCA, isp1362_hcd->rhdesca & ~RH_A_OCPM); | |
2586 | isp1362_write_reg32(isp1362_hcd, HCRHDESCA, isp1362_hcd->rhdesca | RH_A_OCPM); | |
2587 | isp1362_hcd->rhdesca = isp1362_read_reg32(isp1362_hcd, HCRHDESCA); | |
2588 | ||
2589 | isp1362_hcd->rhdescb = RH_B_PPCM; | |
2590 | isp1362_write_reg32(isp1362_hcd, HCRHDESCB, isp1362_hcd->rhdescb); | |
2591 | isp1362_hcd->rhdescb = isp1362_read_reg32(isp1362_hcd, HCRHDESCB); | |
2592 | ||
2593 | isp1362_read_reg32(isp1362_hcd, HCFMINTVL); | |
2594 | isp1362_write_reg32(isp1362_hcd, HCFMINTVL, (FSMP(FI) << 16) | FI); | |
2595 | isp1362_write_reg32(isp1362_hcd, HCLSTHRESH, LSTHRESH); | |
2596 | ||
2597 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
2598 | ||
2599 | isp1362_hcd->hc_control = OHCI_USB_OPER; | |
2600 | hcd->state = HC_STATE_RUNNING; | |
2601 | ||
2602 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
2603 | /* Set up interrupts */ | |
2604 | isp1362_hcd->intenb = OHCI_INTR_MIE | OHCI_INTR_RHSC | OHCI_INTR_UE; | |
2605 | isp1362_hcd->intenb |= OHCI_INTR_RD; | |
2606 | isp1362_hcd->irqenb = HCuPINT_OPR | HCuPINT_SUSP; | |
2607 | isp1362_write_reg32(isp1362_hcd, HCINTENB, isp1362_hcd->intenb); | |
2608 | isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); | |
2609 | ||
2610 | /* Go operational */ | |
2611 | isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); | |
2612 | /* enable global power */ | |
2613 | isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPSC | RH_HS_DRWE); | |
2614 | ||
2615 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
2616 | ||
2617 | return 0; | |
2618 | } | |
2619 | ||
2620 | /*-------------------------------------------------------------------------*/ | |
2621 | ||
2622 | static struct hc_driver isp1362_hc_driver = { | |
2623 | .description = hcd_name, | |
2624 | .product_desc = "ISP1362 Host Controller", | |
2625 | .hcd_priv_size = sizeof(struct isp1362_hcd), | |
2626 | ||
2627 | .irq = isp1362_irq, | |
2628 | .flags = HCD_USB11 | HCD_MEMORY, | |
2629 | ||
2630 | .reset = isp1362_hc_reset, | |
2631 | .start = isp1362_hc_start, | |
2632 | .stop = isp1362_hc_stop, | |
2633 | ||
2634 | .urb_enqueue = isp1362_urb_enqueue, | |
2635 | .urb_dequeue = isp1362_urb_dequeue, | |
2636 | .endpoint_disable = isp1362_endpoint_disable, | |
2637 | ||
2638 | .get_frame_number = isp1362_get_frame, | |
2639 | ||
2640 | .hub_status_data = isp1362_hub_status_data, | |
2641 | .hub_control = isp1362_hub_control, | |
2642 | .bus_suspend = isp1362_bus_suspend, | |
2643 | .bus_resume = isp1362_bus_resume, | |
2644 | }; | |
2645 | ||
2646 | /*-------------------------------------------------------------------------*/ | |
2647 | ||
a9d43091 LW |
2648 | static int __devexit isp1362_remove(struct platform_device *pdev) |
2649 | { | |
2650 | struct usb_hcd *hcd = platform_get_drvdata(pdev); | |
2651 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
2652 | struct resource *res; | |
2653 | ||
2654 | remove_debug_file(isp1362_hcd); | |
2655 | DBG(0, "%s: Removing HCD\n", __func__); | |
2656 | usb_remove_hcd(hcd); | |
2657 | ||
b0a9cf29 MF |
2658 | DBG(0, "%s: Unmapping data_reg @ %p\n", __func__, |
2659 | isp1362_hcd->data_reg); | |
a9d43091 LW |
2660 | iounmap(isp1362_hcd->data_reg); |
2661 | ||
b0a9cf29 MF |
2662 | DBG(0, "%s: Unmapping addr_reg @ %p\n", __func__, |
2663 | isp1362_hcd->addr_reg); | |
a9d43091 LW |
2664 | iounmap(isp1362_hcd->addr_reg); |
2665 | ||
2666 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
2667 | DBG(0, "%s: release mem_region: %08lx\n", __func__, (long unsigned int)res->start); | |
2668 | if (res) | |
4e5c353b | 2669 | release_mem_region(res->start, resource_size(res)); |
a9d43091 LW |
2670 | |
2671 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2672 | DBG(0, "%s: release mem_region: %08lx\n", __func__, (long unsigned int)res->start); | |
2673 | if (res) | |
4e5c353b | 2674 | release_mem_region(res->start, resource_size(res)); |
a9d43091 LW |
2675 | |
2676 | DBG(0, "%s: put_hcd\n", __func__); | |
2677 | usb_put_hcd(hcd); | |
2678 | DBG(0, "%s: Done\n", __func__); | |
2679 | ||
2680 | return 0; | |
2681 | } | |
2682 | ||
f52022b5 | 2683 | static int __devinit isp1362_probe(struct platform_device *pdev) |
a9d43091 LW |
2684 | { |
2685 | struct usb_hcd *hcd; | |
2686 | struct isp1362_hcd *isp1362_hcd; | |
2687 | struct resource *addr, *data; | |
2688 | void __iomem *addr_reg; | |
2689 | void __iomem *data_reg; | |
2690 | int irq; | |
2691 | int retval = 0; | |
0a2fea2e LW |
2692 | struct resource *irq_res; |
2693 | unsigned int irq_flags = 0; | |
a9d43091 LW |
2694 | |
2695 | /* basic sanity checks first. board-specific init logic should | |
2696 | * have initialized this the three resources and probably board | |
2697 | * specific platform_data. we don't probe for IRQs, and do only | |
2698 | * minimal sanity checking. | |
2699 | */ | |
2700 | if (pdev->num_resources < 3) { | |
2701 | retval = -ENODEV; | |
2702 | goto err1; | |
2703 | } | |
2704 | ||
2705 | data = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2706 | addr = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
0a2fea2e LW |
2707 | irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
2708 | if (!addr || !data || !irq_res) { | |
a9d43091 LW |
2709 | retval = -ENODEV; |
2710 | goto err1; | |
2711 | } | |
0a2fea2e | 2712 | irq = irq_res->start; |
a9d43091 | 2713 | |
a9d43091 LW |
2714 | if (pdev->dev.dma_mask) { |
2715 | DBG(1, "won't do DMA"); | |
2716 | retval = -ENODEV; | |
2717 | goto err1; | |
2718 | } | |
a9d43091 | 2719 | |
4e5c353b | 2720 | if (!request_mem_region(addr->start, resource_size(addr), hcd_name)) { |
a9d43091 LW |
2721 | retval = -EBUSY; |
2722 | goto err1; | |
2723 | } | |
4e5c353b | 2724 | addr_reg = ioremap(addr->start, resource_size(addr)); |
a9d43091 LW |
2725 | if (addr_reg == NULL) { |
2726 | retval = -ENOMEM; | |
2727 | goto err2; | |
2728 | } | |
2729 | ||
4e5c353b | 2730 | if (!request_mem_region(data->start, resource_size(data), hcd_name)) { |
a9d43091 LW |
2731 | retval = -EBUSY; |
2732 | goto err3; | |
2733 | } | |
4e5c353b | 2734 | data_reg = ioremap(data->start, resource_size(data)); |
a9d43091 LW |
2735 | if (data_reg == NULL) { |
2736 | retval = -ENOMEM; | |
2737 | goto err4; | |
2738 | } | |
2739 | ||
2740 | /* allocate and initialize hcd */ | |
2741 | hcd = usb_create_hcd(&isp1362_hc_driver, &pdev->dev, dev_name(&pdev->dev)); | |
2742 | if (!hcd) { | |
2743 | retval = -ENOMEM; | |
2744 | goto err5; | |
2745 | } | |
2746 | hcd->rsrc_start = data->start; | |
2747 | isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
2748 | isp1362_hcd->data_reg = data_reg; | |
2749 | isp1362_hcd->addr_reg = addr_reg; | |
2750 | ||
2751 | isp1362_hcd->next_statechange = jiffies; | |
2752 | spin_lock_init(&isp1362_hcd->lock); | |
2753 | INIT_LIST_HEAD(&isp1362_hcd->async); | |
2754 | INIT_LIST_HEAD(&isp1362_hcd->periodic); | |
2755 | INIT_LIST_HEAD(&isp1362_hcd->isoc); | |
2756 | INIT_LIST_HEAD(&isp1362_hcd->remove_list); | |
2757 | isp1362_hcd->board = pdev->dev.platform_data; | |
2758 | #if USE_PLATFORM_DELAY | |
2759 | if (!isp1362_hcd->board->delay) { | |
2760 | dev_err(hcd->self.controller, "No platform delay function given\n"); | |
2761 | retval = -ENODEV; | |
2762 | goto err6; | |
2763 | } | |
2764 | #endif | |
2765 | ||
0a2fea2e LW |
2766 | if (irq_res->flags & IORESOURCE_IRQ_HIGHEDGE) |
2767 | irq_flags |= IRQF_TRIGGER_RISING; | |
2768 | if (irq_res->flags & IORESOURCE_IRQ_LOWEDGE) | |
2769 | irq_flags |= IRQF_TRIGGER_FALLING; | |
2770 | if (irq_res->flags & IORESOURCE_IRQ_HIGHLEVEL) | |
2771 | irq_flags |= IRQF_TRIGGER_HIGH; | |
2772 | if (irq_res->flags & IORESOURCE_IRQ_LOWLEVEL) | |
2773 | irq_flags |= IRQF_TRIGGER_LOW; | |
a9d43091 | 2774 | |
0a2fea2e | 2775 | retval = usb_add_hcd(hcd, irq, irq_flags | IRQF_DISABLED | IRQF_SHARED); |
a9d43091 LW |
2776 | if (retval != 0) |
2777 | goto err6; | |
2778 | pr_info("%s, irq %d\n", hcd->product_desc, irq); | |
2779 | ||
2780 | create_debug_file(isp1362_hcd); | |
2781 | ||
2782 | return 0; | |
2783 | ||
2784 | err6: | |
b0a9cf29 | 2785 | DBG(0, "%s: Freeing dev %p\n", __func__, isp1362_hcd); |
a9d43091 LW |
2786 | usb_put_hcd(hcd); |
2787 | err5: | |
b0a9cf29 | 2788 | DBG(0, "%s: Unmapping data_reg @ %p\n", __func__, data_reg); |
a9d43091 LW |
2789 | iounmap(data_reg); |
2790 | err4: | |
2791 | DBG(0, "%s: Releasing mem region %08lx\n", __func__, (long unsigned int)data->start); | |
4e5c353b | 2792 | release_mem_region(data->start, resource_size(data)); |
a9d43091 | 2793 | err3: |
b0a9cf29 | 2794 | DBG(0, "%s: Unmapping addr_reg @ %p\n", __func__, addr_reg); |
a9d43091 LW |
2795 | iounmap(addr_reg); |
2796 | err2: | |
2797 | DBG(0, "%s: Releasing mem region %08lx\n", __func__, (long unsigned int)addr->start); | |
4e5c353b | 2798 | release_mem_region(addr->start, resource_size(addr)); |
a9d43091 LW |
2799 | err1: |
2800 | pr_err("%s: init error, %d\n", __func__, retval); | |
2801 | ||
2802 | return retval; | |
2803 | } | |
2804 | ||
2805 | #ifdef CONFIG_PM | |
2806 | static int isp1362_suspend(struct platform_device *pdev, pm_message_t state) | |
2807 | { | |
2808 | struct usb_hcd *hcd = platform_get_drvdata(pdev); | |
2809 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
2810 | unsigned long flags; | |
2811 | int retval = 0; | |
2812 | ||
2813 | DBG(0, "%s: Suspending device\n", __func__); | |
2814 | ||
2815 | if (state.event == PM_EVENT_FREEZE) { | |
2816 | DBG(0, "%s: Suspending root hub\n", __func__); | |
2817 | retval = isp1362_bus_suspend(hcd); | |
2818 | } else { | |
2819 | DBG(0, "%s: Suspending RH ports\n", __func__); | |
2820 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
2821 | isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPS); | |
2822 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
2823 | } | |
2824 | if (retval == 0) | |
2825 | pdev->dev.power.power_state = state; | |
2826 | return retval; | |
2827 | } | |
2828 | ||
2829 | static int isp1362_resume(struct platform_device *pdev) | |
2830 | { | |
2831 | struct usb_hcd *hcd = platform_get_drvdata(pdev); | |
2832 | struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); | |
2833 | unsigned long flags; | |
2834 | ||
2835 | DBG(0, "%s: Resuming\n", __func__); | |
2836 | ||
2837 | if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) { | |
2838 | DBG(0, "%s: Resume RH ports\n", __func__); | |
2839 | spin_lock_irqsave(&isp1362_hcd->lock, flags); | |
2840 | isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPSC); | |
2841 | spin_unlock_irqrestore(&isp1362_hcd->lock, flags); | |
2842 | return 0; | |
2843 | } | |
2844 | ||
2845 | pdev->dev.power.power_state = PMSG_ON; | |
2846 | ||
2847 | return isp1362_bus_resume(isp1362_hcd_to_hcd(isp1362_hcd)); | |
2848 | } | |
2849 | #else | |
2850 | #define isp1362_suspend NULL | |
2851 | #define isp1362_resume NULL | |
2852 | #endif | |
2853 | ||
2854 | static struct platform_driver isp1362_driver = { | |
2855 | .probe = isp1362_probe, | |
2856 | .remove = __devexit_p(isp1362_remove), | |
2857 | ||
2858 | .suspend = isp1362_suspend, | |
2859 | .resume = isp1362_resume, | |
2860 | .driver = { | |
2861 | .name = (char *)hcd_name, | |
2862 | .owner = THIS_MODULE, | |
2863 | }, | |
2864 | }; | |
2865 | ||
2866 | /*-------------------------------------------------------------------------*/ | |
2867 | ||
2868 | static int __init isp1362_init(void) | |
2869 | { | |
2870 | if (usb_disabled()) | |
2871 | return -ENODEV; | |
2872 | pr_info("driver %s, %s\n", hcd_name, DRIVER_VERSION); | |
2873 | return platform_driver_register(&isp1362_driver); | |
2874 | } | |
2875 | module_init(isp1362_init); | |
2876 | ||
2877 | static void __exit isp1362_cleanup(void) | |
2878 | { | |
2879 | platform_driver_unregister(&isp1362_driver); | |
2880 | } | |
2881 | module_exit(isp1362_cleanup); |