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db11e47d SS |
1 | /* |
2 | * Driver for the NXP ISP1760 chip | |
3 | * | |
4 | * However, the code might contain some bugs. What doesn't work for sure is: | |
5 | * - ISO | |
6 | * - OTG | |
7 | e The interrupt line is configured as active low, level. | |
8 | * | |
9 | * (c) 2007 Sebastian Siewior <bigeasy@linutronix.de> | |
10 | * | |
11 | */ | |
12 | #include <linux/module.h> | |
13 | #include <linux/kernel.h> | |
14 | #include <linux/slab.h> | |
15 | #include <linux/list.h> | |
16 | #include <linux/usb.h> | |
17 | #include <linux/debugfs.h> | |
18 | #include <linux/uaccess.h> | |
19 | #include <linux/io.h> | |
20 | #include <asm/unaligned.h> | |
21 | ||
22 | #include "../core/hcd.h" | |
23 | #include "isp1760-hcd.h" | |
24 | ||
25 | static struct kmem_cache *qtd_cachep; | |
26 | static struct kmem_cache *qh_cachep; | |
27 | ||
28 | struct isp1760_hcd { | |
29 | u32 hcs_params; | |
30 | spinlock_t lock; | |
31 | struct inter_packet_info atl_ints[32]; | |
32 | struct inter_packet_info int_ints[32]; | |
33 | struct memory_chunk memory_pool[BLOCKS]; | |
34 | ||
35 | /* periodic schedule support */ | |
36 | #define DEFAULT_I_TDPS 1024 | |
37 | unsigned periodic_size; | |
38 | unsigned i_thresh; | |
39 | unsigned long reset_done; | |
40 | unsigned long next_statechange; | |
41 | }; | |
42 | ||
43 | static inline struct isp1760_hcd *hcd_to_priv(struct usb_hcd *hcd) | |
44 | { | |
45 | return (struct isp1760_hcd *) (hcd->hcd_priv); | |
46 | } | |
47 | static inline struct usb_hcd *priv_to_hcd(struct isp1760_hcd *priv) | |
48 | { | |
49 | return container_of((void *) priv, struct usb_hcd, hcd_priv); | |
50 | } | |
51 | ||
52 | /* Section 2.2 Host Controller Capability Registers */ | |
53 | #define HC_LENGTH(p) (((p)>>00)&0x00ff) /* bits 7:0 */ | |
54 | #define HC_VERSION(p) (((p)>>16)&0xffff) /* bits 31:16 */ | |
55 | #define HCS_INDICATOR(p) ((p)&(1 << 16)) /* true: has port indicators */ | |
56 | #define HCS_PPC(p) ((p)&(1 << 4)) /* true: port power control */ | |
57 | #define HCS_N_PORTS(p) (((p)>>0)&0xf) /* bits 3:0, ports on HC */ | |
58 | #define HCC_ISOC_CACHE(p) ((p)&(1 << 7)) /* true: can cache isoc frame */ | |
59 | #define HCC_ISOC_THRES(p) (((p)>>4)&0x7) /* bits 6:4, uframes cached */ | |
60 | ||
61 | /* Section 2.3 Host Controller Operational Registers */ | |
62 | #define CMD_LRESET (1<<7) /* partial reset (no ports, etc) */ | |
63 | #define CMD_RESET (1<<1) /* reset HC not bus */ | |
64 | #define CMD_RUN (1<<0) /* start/stop HC */ | |
65 | #define STS_PCD (1<<2) /* port change detect */ | |
66 | #define FLAG_CF (1<<0) /* true: we'll support "high speed" */ | |
67 | ||
68 | #define PORT_OWNER (1<<13) /* true: companion hc owns this port */ | |
69 | #define PORT_POWER (1<<12) /* true: has power (see PPC) */ | |
70 | #define PORT_USB11(x) (((x) & (3 << 10)) == (1 << 10)) /* USB 1.1 device */ | |
71 | #define PORT_RESET (1<<8) /* reset port */ | |
72 | #define PORT_SUSPEND (1<<7) /* suspend port */ | |
73 | #define PORT_RESUME (1<<6) /* resume it */ | |
74 | #define PORT_PE (1<<2) /* port enable */ | |
75 | #define PORT_CSC (1<<1) /* connect status change */ | |
76 | #define PORT_CONNECT (1<<0) /* device connected */ | |
77 | #define PORT_RWC_BITS (PORT_CSC) | |
78 | ||
79 | struct isp1760_qtd { | |
80 | struct isp1760_qtd *hw_next; | |
81 | u8 packet_type; | |
82 | u8 toggle; | |
83 | ||
84 | void *data_buffer; | |
85 | /* the rest is HCD-private */ | |
86 | struct list_head qtd_list; | |
87 | struct urb *urb; | |
88 | size_t length; | |
89 | ||
90 | /* isp special*/ | |
91 | u32 status; | |
92 | #define URB_COMPLETE_NOTIFY (1 << 0) | |
93 | #define URB_ENQUEUED (1 << 1) | |
94 | #define URB_TYPE_ATL (1 << 2) | |
95 | #define URB_TYPE_INT (1 << 3) | |
96 | }; | |
97 | ||
98 | struct isp1760_qh { | |
99 | /* first part defined by EHCI spec */ | |
100 | struct list_head qtd_list; | |
101 | struct isp1760_hcd *priv; | |
102 | ||
103 | /* periodic schedule info */ | |
104 | unsigned short period; /* polling interval */ | |
105 | struct usb_device *dev; | |
106 | ||
107 | u32 toggle; | |
108 | u32 ping; | |
109 | }; | |
110 | ||
111 | #define ehci_port_speed(priv, portsc) (1 << USB_PORT_FEAT_HIGHSPEED) | |
112 | ||
113 | static unsigned int isp1760_readl(__u32 __iomem *regs) | |
114 | { | |
115 | return readl(regs); | |
116 | } | |
117 | ||
118 | static void isp1760_writel(const unsigned int val, __u32 __iomem *regs) | |
119 | { | |
120 | writel(val, regs); | |
121 | } | |
122 | ||
123 | /* | |
124 | * The next two copy via MMIO data to/from the device. memcpy_{to|from}io() | |
125 | * doesn't quite work because some people have to enforce 32-bit access | |
126 | */ | |
127 | static void priv_read_copy(struct isp1760_hcd *priv, u32 *src, | |
128 | __u32 __iomem *dst, u32 offset, u32 len) | |
129 | { | |
130 | struct usb_hcd *hcd = priv_to_hcd(priv); | |
131 | u32 val; | |
132 | u8 *buff8; | |
133 | ||
134 | if (!src) { | |
135 | printk(KERN_ERR "ERROR: buffer: %p len: %d\n", src, len); | |
136 | return; | |
137 | } | |
138 | isp1760_writel(offset, hcd->regs + HC_MEMORY_REG); | |
139 | /* XXX | |
140 | * 90nsec delay, the spec says something how this could be avoided. | |
141 | */ | |
142 | mdelay(1); | |
143 | ||
144 | while (len >= 4) { | |
145 | *src = __raw_readl(dst); | |
146 | len -= 4; | |
147 | src++; | |
148 | dst++; | |
149 | } | |
150 | ||
151 | if (!len) | |
152 | return; | |
153 | ||
154 | /* in case we have 3, 2 or 1 by left. The dst buffer may not be fully | |
155 | * allocated. | |
156 | */ | |
157 | val = isp1760_readl(dst); | |
158 | ||
159 | buff8 = (u8 *)src; | |
160 | while (len) { | |
161 | ||
162 | *buff8 = val; | |
163 | val >>= 8; | |
164 | len--; | |
165 | buff8++; | |
166 | } | |
167 | } | |
168 | ||
169 | static void priv_write_copy(const struct isp1760_hcd *priv, const u32 *src, | |
170 | __u32 __iomem *dst, u32 len) | |
171 | { | |
172 | while (len >= 4) { | |
173 | __raw_writel(*src, dst); | |
174 | len -= 4; | |
175 | src++; | |
176 | dst++; | |
177 | } | |
178 | ||
179 | if (!len) | |
180 | return; | |
181 | /* in case we have 3, 2 or 1 by left. The buffer is allocated and the | |
182 | * extra bytes should not be read by the HW | |
183 | */ | |
184 | ||
185 | __raw_writel(*src, dst); | |
186 | } | |
187 | ||
188 | /* memory management of the 60kb on the chip from 0x1000 to 0xffff */ | |
189 | static void init_memory(struct isp1760_hcd *priv) | |
190 | { | |
191 | int i; | |
192 | u32 payload; | |
193 | ||
194 | payload = 0x1000; | |
195 | for (i = 0; i < BLOCK_1_NUM; i++) { | |
196 | priv->memory_pool[i].start = payload; | |
197 | priv->memory_pool[i].size = BLOCK_1_SIZE; | |
198 | priv->memory_pool[i].free = 1; | |
199 | payload += priv->memory_pool[i].size; | |
200 | } | |
201 | ||
202 | ||
203 | for (i = BLOCK_1_NUM; i < BLOCK_1_NUM + BLOCK_2_NUM; i++) { | |
204 | priv->memory_pool[i].start = payload; | |
205 | priv->memory_pool[i].size = BLOCK_2_SIZE; | |
206 | priv->memory_pool[i].free = 1; | |
207 | payload += priv->memory_pool[i].size; | |
208 | } | |
209 | ||
210 | ||
211 | for (i = BLOCK_1_NUM + BLOCK_2_NUM; i < BLOCKS; i++) { | |
212 | priv->memory_pool[i].start = payload; | |
213 | priv->memory_pool[i].size = BLOCK_3_SIZE; | |
214 | priv->memory_pool[i].free = 1; | |
215 | payload += priv->memory_pool[i].size; | |
216 | } | |
217 | ||
218 | BUG_ON(payload - priv->memory_pool[i - 1].size > PAYLOAD_SIZE); | |
219 | } | |
220 | ||
221 | static u32 alloc_mem(struct isp1760_hcd *priv, u32 size) | |
222 | { | |
223 | int i; | |
224 | ||
225 | if (!size) | |
226 | return ISP1760_NULL_POINTER; | |
227 | ||
228 | for (i = 0; i < BLOCKS; i++) { | |
229 | if (priv->memory_pool[i].size >= size && | |
230 | priv->memory_pool[i].free) { | |
231 | ||
232 | priv->memory_pool[i].free = 0; | |
233 | return priv->memory_pool[i].start; | |
234 | } | |
235 | } | |
236 | ||
237 | printk(KERN_ERR "ISP1760 MEM: can not allocate %d bytes of memory\n", | |
238 | size); | |
239 | printk(KERN_ERR "Current memory map:\n"); | |
240 | for (i = 0; i < BLOCKS; i++) { | |
241 | printk(KERN_ERR "Pool %2d size %4d status: %d\n", | |
242 | i, priv->memory_pool[i].size, | |
243 | priv->memory_pool[i].free); | |
244 | } | |
245 | /* XXX maybe -ENOMEM could be possible */ | |
246 | BUG(); | |
247 | return 0; | |
248 | } | |
249 | ||
250 | static void free_mem(struct isp1760_hcd *priv, u32 mem) | |
251 | { | |
252 | int i; | |
253 | ||
254 | if (mem == ISP1760_NULL_POINTER) | |
255 | return; | |
256 | ||
257 | for (i = 0; i < BLOCKS; i++) { | |
258 | if (priv->memory_pool[i].start == mem) { | |
259 | ||
260 | BUG_ON(priv->memory_pool[i].free); | |
261 | ||
262 | priv->memory_pool[i].free = 1; | |
263 | return ; | |
264 | } | |
265 | } | |
266 | ||
267 | printk(KERN_ERR "Trying to free not-here-allocated memory :%08x\n", | |
268 | mem); | |
269 | BUG(); | |
270 | } | |
271 | ||
272 | static void isp1760_init_regs(struct usb_hcd *hcd) | |
273 | { | |
274 | isp1760_writel(0, hcd->regs + HC_BUFFER_STATUS_REG); | |
275 | isp1760_writel(NO_TRANSFER_ACTIVE, hcd->regs + | |
276 | HC_ATL_PTD_SKIPMAP_REG); | |
277 | isp1760_writel(NO_TRANSFER_ACTIVE, hcd->regs + | |
278 | HC_INT_PTD_SKIPMAP_REG); | |
279 | isp1760_writel(NO_TRANSFER_ACTIVE, hcd->regs + | |
280 | HC_ISO_PTD_SKIPMAP_REG); | |
281 | ||
282 | isp1760_writel(~NO_TRANSFER_ACTIVE, hcd->regs + | |
283 | HC_ATL_PTD_DONEMAP_REG); | |
284 | isp1760_writel(~NO_TRANSFER_ACTIVE, hcd->regs + | |
285 | HC_INT_PTD_DONEMAP_REG); | |
286 | isp1760_writel(~NO_TRANSFER_ACTIVE, hcd->regs + | |
287 | HC_ISO_PTD_DONEMAP_REG); | |
288 | } | |
289 | ||
290 | static int handshake(struct isp1760_hcd *priv, void __iomem *ptr, | |
291 | u32 mask, u32 done, int usec) | |
292 | { | |
293 | u32 result; | |
294 | ||
295 | do { | |
296 | result = isp1760_readl(ptr); | |
297 | if (result == ~0) | |
298 | return -ENODEV; | |
299 | result &= mask; | |
300 | if (result == done) | |
301 | return 0; | |
302 | udelay(1); | |
303 | usec--; | |
304 | } while (usec > 0); | |
305 | return -ETIMEDOUT; | |
306 | } | |
307 | ||
308 | /* reset a non-running (STS_HALT == 1) controller */ | |
309 | static int ehci_reset(struct isp1760_hcd *priv) | |
310 | { | |
311 | int retval; | |
312 | struct usb_hcd *hcd = priv_to_hcd(priv); | |
313 | u32 command = isp1760_readl(hcd->regs + HC_USBCMD); | |
314 | ||
315 | command |= CMD_RESET; | |
316 | isp1760_writel(command, hcd->regs + HC_USBCMD); | |
317 | hcd->state = HC_STATE_HALT; | |
318 | priv->next_statechange = jiffies; | |
319 | retval = handshake(priv, hcd->regs + HC_USBCMD, | |
320 | CMD_RESET, 0, 250 * 1000); | |
321 | return retval; | |
322 | } | |
323 | ||
324 | static void qh_destroy(struct isp1760_qh *qh) | |
325 | { | |
326 | BUG_ON(!list_empty(&qh->qtd_list)); | |
327 | kmem_cache_free(qh_cachep, qh); | |
328 | } | |
329 | ||
330 | static struct isp1760_qh *isp1760_qh_alloc(struct isp1760_hcd *priv, | |
331 | gfp_t flags) | |
332 | { | |
333 | struct isp1760_qh *qh; | |
334 | ||
335 | qh = kmem_cache_zalloc(qh_cachep, flags); | |
336 | if (!qh) | |
337 | return qh; | |
338 | ||
339 | INIT_LIST_HEAD(&qh->qtd_list); | |
340 | qh->priv = priv; | |
341 | return qh; | |
342 | } | |
343 | ||
344 | /* magic numbers that can affect system performance */ | |
345 | #define EHCI_TUNE_CERR 3 /* 0-3 qtd retries; 0 == don't stop */ | |
346 | #define EHCI_TUNE_RL_HS 4 /* nak throttle; see 4.9 */ | |
347 | #define EHCI_TUNE_RL_TT 0 | |
348 | #define EHCI_TUNE_MULT_HS 1 /* 1-3 transactions/uframe; 4.10.3 */ | |
349 | #define EHCI_TUNE_MULT_TT 1 | |
350 | #define EHCI_TUNE_FLS 2 /* (small) 256 frame schedule */ | |
351 | ||
352 | /* one-time init, only for memory state */ | |
353 | static int priv_init(struct usb_hcd *hcd) | |
354 | { | |
355 | struct isp1760_hcd *priv = hcd_to_priv(hcd); | |
356 | u32 hcc_params; | |
357 | ||
358 | spin_lock_init(&priv->lock); | |
359 | ||
360 | /* | |
361 | * hw default: 1K periodic list heads, one per frame. | |
362 | * periodic_size can shrink by USBCMD update if hcc_params allows. | |
363 | */ | |
364 | priv->periodic_size = DEFAULT_I_TDPS; | |
365 | ||
366 | /* controllers may cache some of the periodic schedule ... */ | |
367 | hcc_params = isp1760_readl(hcd->regs + HC_HCCPARAMS); | |
368 | /* full frame cache */ | |
369 | if (HCC_ISOC_CACHE(hcc_params)) | |
370 | priv->i_thresh = 8; | |
371 | else /* N microframes cached */ | |
372 | priv->i_thresh = 2 + HCC_ISOC_THRES(hcc_params); | |
373 | ||
374 | return 0; | |
375 | } | |
376 | ||
377 | static int isp1760_hc_setup(struct usb_hcd *hcd) | |
378 | { | |
379 | struct isp1760_hcd *priv = hcd_to_priv(hcd); | |
380 | int result; | |
381 | u32 scratch; | |
382 | ||
383 | isp1760_writel(0xdeadbabe, hcd->regs + HC_SCRATCH_REG); | |
384 | scratch = isp1760_readl(hcd->regs + HC_SCRATCH_REG); | |
385 | if (scratch != 0xdeadbabe) { | |
386 | printk(KERN_ERR "ISP1760: Scratch test failed.\n"); | |
387 | return -ENODEV; | |
388 | } | |
389 | ||
390 | /* pre reset */ | |
391 | isp1760_init_regs(hcd); | |
392 | ||
393 | /* reset */ | |
394 | isp1760_writel(SW_RESET_RESET_ALL, hcd->regs + HC_RESET_REG); | |
395 | mdelay(100); | |
396 | ||
397 | isp1760_writel(SW_RESET_RESET_HC, hcd->regs + HC_RESET_REG); | |
398 | mdelay(100); | |
399 | ||
400 | result = ehci_reset(priv); | |
401 | if (result) | |
402 | return result; | |
403 | ||
404 | /* Step 11 passed */ | |
405 | ||
406 | isp1760_writel(INTERRUPT_ENABLE_MASK, hcd->regs + HC_INTERRUPT_REG); | |
407 | isp1760_writel(INTERRUPT_ENABLE_MASK, hcd->regs + HC_INTERRUPT_ENABLE); | |
408 | ||
409 | /* ATL reset */ | |
410 | scratch = isp1760_readl(hcd->regs + HC_HW_MODE_CTRL); | |
411 | isp1760_writel(scratch | ALL_ATX_RESET, hcd->regs + HC_HW_MODE_CTRL); | |
412 | mdelay(10); | |
413 | isp1760_writel(scratch, hcd->regs + HC_HW_MODE_CTRL); | |
414 | ||
415 | isp1760_writel(PORT1_POWER | PORT1_INIT2, hcd->regs + HC_PORT1_CTRL); | |
416 | mdelay(10); | |
417 | ||
418 | priv->hcs_params = isp1760_readl(hcd->regs + HC_HCSPARAMS); | |
419 | ||
420 | return priv_init(hcd); | |
421 | } | |
422 | ||
423 | static void isp1760_init_maps(struct usb_hcd *hcd) | |
424 | { | |
425 | /*set last maps, for iso its only 1, else 32 tds bitmap*/ | |
426 | isp1760_writel(0x80000000, hcd->regs + HC_ATL_PTD_LASTPTD_REG); | |
427 | isp1760_writel(0x80000000, hcd->regs + HC_INT_PTD_LASTPTD_REG); | |
428 | isp1760_writel(0x00000001, hcd->regs + HC_ISO_PTD_LASTPTD_REG); | |
429 | } | |
430 | ||
431 | static void isp1760_enable_interrupts(struct usb_hcd *hcd) | |
432 | { | |
433 | isp1760_writel(0, hcd->regs + HC_ATL_IRQ_MASK_AND_REG); | |
434 | isp1760_writel(0, hcd->regs + HC_ATL_IRQ_MASK_OR_REG); | |
435 | isp1760_writel(0, hcd->regs + HC_INT_IRQ_MASK_AND_REG); | |
436 | isp1760_writel(0, hcd->regs + HC_INT_IRQ_MASK_OR_REG); | |
437 | isp1760_writel(0, hcd->regs + HC_ISO_IRQ_MASK_AND_REG); | |
438 | isp1760_writel(0xffffffff, hcd->regs + HC_ISO_IRQ_MASK_OR_REG); | |
439 | /* step 23 passed */ | |
440 | } | |
441 | ||
442 | static int isp1760_run(struct usb_hcd *hcd) | |
443 | { | |
444 | struct isp1760_hcd *priv = hcd_to_priv(hcd); | |
445 | int retval; | |
446 | u32 temp; | |
447 | u32 command; | |
448 | u32 chipid; | |
449 | ||
450 | hcd->uses_new_polling = 1; | |
451 | hcd->poll_rh = 0; | |
452 | ||
453 | hcd->state = HC_STATE_RUNNING; | |
454 | isp1760_enable_interrupts(hcd); | |
455 | temp = isp1760_readl(hcd->regs + HC_HW_MODE_CTRL); | |
456 | temp |= FINAL_HW_CONFIG; | |
457 | isp1760_writel(temp, hcd->regs + HC_HW_MODE_CTRL); | |
458 | ||
459 | command = isp1760_readl(hcd->regs + HC_USBCMD); | |
460 | command &= ~(CMD_LRESET|CMD_RESET); | |
461 | command |= CMD_RUN; | |
462 | isp1760_writel(command, hcd->regs + HC_USBCMD); | |
463 | ||
464 | retval = handshake(priv, hcd->regs + HC_USBCMD, CMD_RUN, CMD_RUN, | |
465 | 250 * 1000); | |
466 | if (retval) | |
467 | return retval; | |
468 | ||
469 | /* | |
470 | * XXX | |
471 | * Spec says to write FLAG_CF as last config action, priv code grabs | |
472 | * the semaphore while doing so. | |
473 | */ | |
474 | down_write(&ehci_cf_port_reset_rwsem); | |
475 | isp1760_writel(FLAG_CF, hcd->regs + HC_CONFIGFLAG); | |
476 | ||
477 | retval = handshake(priv, hcd->regs + HC_CONFIGFLAG, FLAG_CF, FLAG_CF, | |
478 | 250 * 1000); | |
479 | up_write(&ehci_cf_port_reset_rwsem); | |
480 | if (retval) | |
481 | return retval; | |
482 | ||
483 | chipid = isp1760_readl(hcd->regs + HC_CHIP_ID_REG); | |
484 | isp1760_info(priv, "USB ISP %04x HW rev. %d started\n", chipid & 0xffff, | |
485 | chipid >> 16); | |
486 | ||
487 | /* PTD Register Init Part 2, Step 28 */ | |
488 | /* enable INTs */ | |
489 | isp1760_init_maps(hcd); | |
490 | ||
491 | /* GRR this is run-once init(), being done every time the HC starts. | |
492 | * So long as they're part of class devices, we can't do it init() | |
493 | * since the class device isn't created that early. | |
494 | */ | |
495 | return 0; | |
496 | } | |
497 | ||
498 | static u32 base_to_chip(u32 base) | |
499 | { | |
500 | return ((base - 0x400) >> 3); | |
501 | } | |
502 | ||
503 | static void transform_into_atl(struct isp1760_hcd *priv, struct isp1760_qh *qh, | |
504 | struct isp1760_qtd *qtd, struct urb *urb, | |
505 | u32 payload, struct ptd *ptd) | |
506 | { | |
507 | u32 dw0; | |
508 | u32 dw1; | |
509 | u32 dw2; | |
510 | u32 dw3; | |
511 | u32 maxpacket; | |
512 | u32 multi; | |
513 | u32 pid_code; | |
514 | u32 rl = RL_COUNTER; | |
515 | u32 nak = NAK_COUNTER; | |
516 | ||
517 | /* according to 3.6.2, max packet len can not be > 0x400 */ | |
518 | maxpacket = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)); | |
519 | multi = 1 + ((maxpacket >> 11) & 0x3); | |
520 | maxpacket &= 0x7ff; | |
521 | ||
522 | /* DW0 */ | |
523 | dw0 = PTD_VALID; | |
524 | dw0 |= PTD_LENGTH(qtd->length); | |
525 | dw0 |= PTD_MAXPACKET(maxpacket); | |
526 | dw0 |= PTD_ENDPOINT(usb_pipeendpoint(urb->pipe)); | |
527 | dw1 = usb_pipeendpoint(urb->pipe) >> 1; | |
528 | ||
529 | /* DW1 */ | |
530 | dw1 |= PTD_DEVICE_ADDR(usb_pipedevice(urb->pipe)); | |
531 | ||
532 | pid_code = qtd->packet_type; | |
533 | dw1 |= PTD_PID_TOKEN(pid_code); | |
534 | ||
535 | if (usb_pipebulk(urb->pipe)) | |
536 | dw1 |= PTD_TRANS_BULK; | |
537 | else if (usb_pipeint(urb->pipe)) | |
538 | dw1 |= PTD_TRANS_INT; | |
539 | ||
540 | if (urb->dev->speed != USB_SPEED_HIGH) { | |
541 | /* split transaction */ | |
542 | ||
543 | dw1 |= PTD_TRANS_SPLIT; | |
544 | if (urb->dev->speed == USB_SPEED_LOW) | |
545 | dw1 |= PTD_SE_USB_LOSPEED; | |
546 | ||
547 | dw1 |= PTD_PORT_NUM(urb->dev->ttport); | |
548 | dw1 |= PTD_HUB_NUM(urb->dev->tt->hub->devnum); | |
549 | ||
550 | /* SE bit for Split INT transfers */ | |
551 | if (usb_pipeint(urb->pipe) && | |
552 | (urb->dev->speed == USB_SPEED_LOW)) | |
553 | dw1 |= 2 << 16; | |
554 | ||
555 | dw3 = 0; | |
556 | rl = 0; | |
557 | nak = 0; | |
558 | } else { | |
559 | dw0 |= PTD_MULTI(multi); | |
560 | if (usb_pipecontrol(urb->pipe) || usb_pipebulk(urb->pipe)) | |
561 | dw3 = qh->ping; | |
562 | else | |
563 | dw3 = 0; | |
564 | } | |
565 | /* DW2 */ | |
566 | dw2 = 0; | |
567 | dw2 |= PTD_DATA_START_ADDR(base_to_chip(payload)); | |
568 | dw2 |= PTD_RL_CNT(rl); | |
569 | dw3 |= PTD_NAC_CNT(nak); | |
570 | ||
571 | /* DW3 */ | |
572 | if (usb_pipecontrol(urb->pipe)) | |
573 | dw3 |= PTD_DATA_TOGGLE(qtd->toggle); | |
574 | else | |
575 | dw3 |= qh->toggle; | |
576 | ||
577 | ||
578 | dw3 |= PTD_ACTIVE; | |
579 | /* Cerr */ | |
580 | dw3 |= PTD_CERR(ERR_COUNTER); | |
581 | ||
582 | memset(ptd, 0, sizeof(*ptd)); | |
583 | ||
584 | ptd->dw0 = cpu_to_le32(dw0); | |
585 | ptd->dw1 = cpu_to_le32(dw1); | |
586 | ptd->dw2 = cpu_to_le32(dw2); | |
587 | ptd->dw3 = cpu_to_le32(dw3); | |
588 | } | |
589 | ||
590 | static void transform_add_int(struct isp1760_hcd *priv, struct isp1760_qh *qh, | |
591 | struct isp1760_qtd *qtd, struct urb *urb, | |
592 | u32 payload, struct ptd *ptd) | |
593 | { | |
594 | u32 maxpacket; | |
595 | u32 multi; | |
596 | u32 numberofusofs; | |
597 | u32 i; | |
598 | u32 usofmask, usof; | |
599 | u32 period; | |
600 | ||
601 | maxpacket = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)); | |
602 | multi = 1 + ((maxpacket >> 11) & 0x3); | |
603 | maxpacket &= 0x7ff; | |
604 | /* length of the data per uframe */ | |
605 | maxpacket = multi * maxpacket; | |
606 | ||
607 | numberofusofs = urb->transfer_buffer_length / maxpacket; | |
608 | if (urb->transfer_buffer_length % maxpacket) | |
609 | numberofusofs += 1; | |
610 | ||
611 | usofmask = 1; | |
612 | usof = 0; | |
613 | for (i = 0; i < numberofusofs; i++) { | |
614 | usof |= usofmask; | |
615 | usofmask <<= 1; | |
616 | } | |
617 | ||
618 | if (urb->dev->speed != USB_SPEED_HIGH) { | |
619 | /* split */ | |
620 | ptd->dw5 = __constant_cpu_to_le32(0x1c); | |
621 | ||
622 | if (qh->period >= 32) | |
623 | period = qh->period / 2; | |
624 | else | |
625 | period = qh->period; | |
626 | ||
627 | } else { | |
628 | ||
629 | if (qh->period >= 8) | |
630 | period = qh->period/8; | |
631 | else | |
632 | period = qh->period; | |
633 | ||
634 | if (period >= 32) | |
635 | period = 16; | |
636 | ||
637 | if (qh->period >= 8) { | |
638 | /* millisecond period */ | |
639 | period = (period << 3); | |
640 | } else { | |
641 | /* usof based tranmsfers */ | |
642 | /* minimum 4 usofs */ | |
643 | usof = 0x11; | |
644 | } | |
645 | } | |
646 | ||
647 | ptd->dw2 |= cpu_to_le32(period); | |
648 | ptd->dw4 = cpu_to_le32(usof); | |
649 | } | |
650 | ||
651 | static void transform_into_int(struct isp1760_hcd *priv, struct isp1760_qh *qh, | |
652 | struct isp1760_qtd *qtd, struct urb *urb, | |
653 | u32 payload, struct ptd *ptd) | |
654 | { | |
655 | transform_into_atl(priv, qh, qtd, urb, payload, ptd); | |
656 | transform_add_int(priv, qh, qtd, urb, payload, ptd); | |
657 | } | |
658 | ||
659 | static int qtd_fill(struct isp1760_qtd *qtd, void *databuffer, size_t len, | |
660 | u32 token) | |
661 | { | |
662 | int count; | |
663 | ||
664 | qtd->data_buffer = databuffer; | |
665 | qtd->packet_type = GET_QTD_TOKEN_TYPE(token); | |
666 | qtd->toggle = GET_DATA_TOGGLE(token); | |
667 | ||
668 | if (len > HC_ATL_PL_SIZE) | |
669 | count = HC_ATL_PL_SIZE; | |
670 | else | |
671 | count = len; | |
672 | ||
673 | qtd->length = count; | |
674 | return count; | |
675 | } | |
676 | ||
677 | static int check_error(struct ptd *ptd) | |
678 | { | |
679 | int error = 0; | |
680 | u32 dw3; | |
681 | ||
682 | dw3 = le32_to_cpu(ptd->dw3); | |
683 | if (dw3 & DW3_HALT_BIT) | |
684 | error = -EPIPE; | |
685 | ||
686 | if (dw3 & DW3_ERROR_BIT) { | |
687 | printk(KERN_ERR "error bit is set in DW3\n"); | |
688 | error = -EPIPE; | |
689 | } | |
690 | ||
691 | if (dw3 & DW3_QTD_ACTIVE) { | |
692 | printk(KERN_ERR "transfer active bit is set DW3\n"); | |
693 | printk(KERN_ERR "nak counter: %d, rl: %d\n", (dw3 >> 19) & 0xf, | |
694 | (le32_to_cpu(ptd->dw2) >> 25) & 0xf); | |
695 | } | |
696 | ||
697 | return error; | |
698 | } | |
699 | ||
700 | static void check_int_err_status(u32 dw4) | |
701 | { | |
702 | u32 i; | |
703 | ||
704 | dw4 >>= 8; | |
705 | ||
706 | for (i = 0; i < 8; i++) { | |
707 | switch (dw4 & 0x7) { | |
708 | case INT_UNDERRUN: | |
709 | printk(KERN_ERR "ERROR: under run , %d\n", i); | |
710 | break; | |
711 | ||
712 | case INT_EXACT: | |
713 | printk(KERN_ERR "ERROR: transaction error, %d\n", i); | |
714 | break; | |
715 | ||
716 | case INT_BABBLE: | |
717 | printk(KERN_ERR "ERROR: babble error, %d\n", i); | |
718 | break; | |
719 | } | |
720 | dw4 >>= 3; | |
721 | } | |
722 | } | |
723 | ||
724 | static void enqueue_one_qtd(struct isp1760_qtd *qtd, struct isp1760_hcd *priv, | |
725 | u32 payload) | |
726 | { | |
727 | u32 token; | |
728 | struct usb_hcd *hcd = priv_to_hcd(priv); | |
729 | ||
730 | token = qtd->packet_type; | |
731 | ||
732 | if (qtd->length && (qtd->length <= HC_ATL_PL_SIZE)) { | |
733 | switch (token) { | |
734 | case IN_PID: | |
735 | break; | |
736 | case OUT_PID: | |
737 | case SETUP_PID: | |
738 | priv_write_copy(priv, qtd->data_buffer, | |
739 | hcd->regs + payload, | |
740 | qtd->length); | |
741 | } | |
742 | } | |
743 | } | |
744 | ||
745 | static void enqueue_one_atl_qtd(u32 atl_regs, u32 payload, | |
746 | struct isp1760_hcd *priv, struct isp1760_qh *qh, | |
747 | struct urb *urb, u32 slot, struct isp1760_qtd *qtd) | |
748 | { | |
749 | struct ptd ptd; | |
750 | struct usb_hcd *hcd = priv_to_hcd(priv); | |
751 | ||
752 | transform_into_atl(priv, qh, qtd, urb, payload, &ptd); | |
753 | priv_write_copy(priv, (u32 *)&ptd, hcd->regs + atl_regs, sizeof(ptd)); | |
754 | enqueue_one_qtd(qtd, priv, payload); | |
755 | ||
756 | priv->atl_ints[slot].urb = urb; | |
757 | priv->atl_ints[slot].qh = qh; | |
758 | priv->atl_ints[slot].qtd = qtd; | |
759 | priv->atl_ints[slot].data_buffer = qtd->data_buffer; | |
760 | priv->atl_ints[slot].payload = payload; | |
761 | qtd->status |= URB_ENQUEUED | URB_TYPE_ATL; | |
762 | qtd->status |= slot << 16; | |
763 | } | |
764 | ||
765 | static void enqueue_one_int_qtd(u32 int_regs, u32 payload, | |
766 | struct isp1760_hcd *priv, struct isp1760_qh *qh, | |
767 | struct urb *urb, u32 slot, struct isp1760_qtd *qtd) | |
768 | { | |
769 | struct ptd ptd; | |
770 | struct usb_hcd *hcd = priv_to_hcd(priv); | |
771 | ||
772 | transform_into_int(priv, qh, qtd, urb, payload, &ptd); | |
773 | priv_write_copy(priv, (u32 *)&ptd, hcd->regs + int_regs, sizeof(ptd)); | |
774 | enqueue_one_qtd(qtd, priv, payload); | |
775 | ||
776 | priv->int_ints[slot].urb = urb; | |
777 | priv->int_ints[slot].qh = qh; | |
778 | priv->int_ints[slot].qtd = qtd; | |
779 | priv->int_ints[slot].data_buffer = qtd->data_buffer; | |
780 | priv->int_ints[slot].payload = payload; | |
781 | qtd->status |= URB_ENQUEUED | URB_TYPE_INT; | |
782 | qtd->status |= slot << 16; | |
783 | } | |
784 | ||
785 | void enqueue_an_ATL_packet(struct usb_hcd *hcd, struct isp1760_qh *qh, | |
786 | struct isp1760_qtd *qtd) | |
787 | { | |
788 | struct isp1760_hcd *priv = hcd_to_priv(hcd); | |
789 | u32 skip_map, or_map; | |
790 | u32 queue_entry; | |
791 | u32 slot; | |
792 | u32 atl_regs, payload; | |
793 | u32 buffstatus; | |
794 | ||
795 | skip_map = isp1760_readl(hcd->regs + HC_ATL_PTD_SKIPMAP_REG); | |
796 | ||
797 | BUG_ON(!skip_map); | |
798 | slot = __ffs(skip_map); | |
799 | queue_entry = 1 << slot; | |
800 | ||
801 | atl_regs = ATL_REGS_OFFSET + slot * sizeof(struct ptd); | |
802 | ||
803 | payload = alloc_mem(priv, qtd->length); | |
804 | ||
805 | enqueue_one_atl_qtd(atl_regs, payload, priv, qh, qtd->urb, slot, qtd); | |
806 | ||
807 | or_map = isp1760_readl(hcd->regs + HC_ATL_IRQ_MASK_OR_REG); | |
808 | or_map |= queue_entry; | |
809 | isp1760_writel(or_map, hcd->regs + HC_ATL_IRQ_MASK_OR_REG); | |
810 | ||
811 | skip_map &= ~queue_entry; | |
812 | isp1760_writel(skip_map, hcd->regs + HC_ATL_PTD_SKIPMAP_REG); | |
813 | ||
814 | buffstatus = isp1760_readl(hcd->regs + HC_BUFFER_STATUS_REG); | |
815 | buffstatus |= ATL_BUFFER; | |
816 | isp1760_writel(buffstatus, hcd->regs + HC_BUFFER_STATUS_REG); | |
817 | } | |
818 | ||
819 | void enqueue_an_INT_packet(struct usb_hcd *hcd, struct isp1760_qh *qh, | |
820 | struct isp1760_qtd *qtd) | |
821 | { | |
822 | struct isp1760_hcd *priv = hcd_to_priv(hcd); | |
823 | u32 skip_map, or_map; | |
824 | u32 queue_entry; | |
825 | u32 slot; | |
826 | u32 int_regs, payload; | |
827 | u32 buffstatus; | |
828 | ||
829 | skip_map = isp1760_readl(hcd->regs + HC_INT_PTD_SKIPMAP_REG); | |
830 | ||
831 | BUG_ON(!skip_map); | |
832 | slot = __ffs(skip_map); | |
833 | queue_entry = 1 << slot; | |
834 | ||
835 | int_regs = INT_REGS_OFFSET + slot * sizeof(struct ptd); | |
836 | ||
837 | payload = alloc_mem(priv, qtd->length); | |
838 | ||
839 | enqueue_one_int_qtd(int_regs, payload, priv, qh, qtd->urb, slot, qtd); | |
840 | ||
841 | or_map = isp1760_readl(hcd->regs + HC_INT_IRQ_MASK_OR_REG); | |
842 | or_map |= queue_entry; | |
843 | isp1760_writel(or_map, hcd->regs + HC_INT_IRQ_MASK_OR_REG); | |
844 | ||
845 | skip_map &= ~queue_entry; | |
846 | isp1760_writel(skip_map, hcd->regs + HC_INT_PTD_SKIPMAP_REG); | |
847 | ||
848 | buffstatus = isp1760_readl(hcd->regs + HC_BUFFER_STATUS_REG); | |
849 | buffstatus |= INT_BUFFER; | |
850 | isp1760_writel(buffstatus, hcd->regs + HC_BUFFER_STATUS_REG); | |
851 | } | |
852 | ||
853 | static void isp1760_urb_done(struct isp1760_hcd *priv, struct urb *urb, int status) | |
854 | __releases(priv->lock) | |
855 | __acquires(priv->lock) | |
856 | { | |
857 | if (!urb->unlinked) { | |
858 | if (status == -EINPROGRESS) | |
859 | status = 0; | |
860 | } | |
861 | ||
862 | /* complete() can reenter this HCD */ | |
863 | usb_hcd_unlink_urb_from_ep(priv_to_hcd(priv), urb); | |
864 | spin_unlock(&priv->lock); | |
865 | usb_hcd_giveback_urb(priv_to_hcd(priv), urb, status); | |
866 | spin_lock(&priv->lock); | |
867 | } | |
868 | ||
869 | static void isp1760_qtd_free(struct isp1760_qtd *qtd) | |
870 | { | |
871 | kmem_cache_free(qtd_cachep, qtd); | |
872 | } | |
873 | ||
874 | static struct isp1760_qtd *clean_this_qtd(struct isp1760_qtd *qtd) | |
875 | { | |
876 | struct isp1760_qtd *tmp_qtd; | |
877 | ||
878 | tmp_qtd = qtd->hw_next; | |
879 | list_del(&qtd->qtd_list); | |
880 | isp1760_qtd_free(qtd); | |
881 | return tmp_qtd; | |
882 | } | |
883 | ||
884 | /* | |
885 | * Remove this QTD from the QH list and free its memory. If this QTD | |
886 | * isn't the last one than remove also his successor(s). | |
887 | * Returns the QTD which is part of an new URB and should be enqueued. | |
888 | */ | |
889 | static struct isp1760_qtd *clean_up_qtdlist(struct isp1760_qtd *qtd) | |
890 | { | |
891 | struct isp1760_qtd *tmp_qtd; | |
892 | int last_one; | |
893 | ||
894 | do { | |
895 | tmp_qtd = qtd->hw_next; | |
896 | last_one = qtd->status & URB_COMPLETE_NOTIFY; | |
897 | list_del(&qtd->qtd_list); | |
898 | isp1760_qtd_free(qtd); | |
899 | qtd = tmp_qtd; | |
900 | } while (!last_one && qtd); | |
901 | ||
902 | return qtd; | |
903 | } | |
904 | ||
905 | static void do_atl_int(struct usb_hcd *usb_hcd) | |
906 | { | |
907 | struct isp1760_hcd *priv = hcd_to_priv(usb_hcd); | |
908 | u32 done_map, skip_map; | |
909 | struct ptd ptd; | |
910 | struct urb *urb = NULL; | |
911 | u32 atl_regs_base; | |
912 | u32 atl_regs; | |
913 | u32 queue_entry; | |
914 | u32 payload; | |
915 | u32 length; | |
916 | u32 or_map; | |
917 | u32 status = -EINVAL; | |
918 | int error; | |
919 | struct isp1760_qtd *qtd; | |
920 | struct isp1760_qh *qh; | |
921 | u32 rl; | |
922 | u32 nakcount; | |
923 | ||
924 | done_map = isp1760_readl(usb_hcd->regs + | |
925 | HC_ATL_PTD_DONEMAP_REG); | |
926 | skip_map = isp1760_readl(usb_hcd->regs + | |
927 | HC_ATL_PTD_SKIPMAP_REG); | |
928 | ||
929 | or_map = isp1760_readl(usb_hcd->regs + HC_ATL_IRQ_MASK_OR_REG); | |
930 | or_map &= ~done_map; | |
931 | isp1760_writel(or_map, usb_hcd->regs + HC_ATL_IRQ_MASK_OR_REG); | |
932 | ||
933 | atl_regs_base = ATL_REGS_OFFSET; | |
934 | while (done_map) { | |
935 | u32 dw1; | |
936 | u32 dw2; | |
937 | u32 dw3; | |
938 | ||
939 | status = 0; | |
940 | ||
941 | queue_entry = __ffs(done_map); | |
942 | done_map &= ~(1 << queue_entry); | |
943 | skip_map |= 1 << queue_entry; | |
944 | ||
945 | atl_regs = atl_regs_base + queue_entry * sizeof(struct ptd); | |
946 | ||
947 | urb = priv->atl_ints[queue_entry].urb; | |
948 | qtd = priv->atl_ints[queue_entry].qtd; | |
949 | qh = priv->atl_ints[queue_entry].qh; | |
950 | payload = priv->atl_ints[queue_entry].payload; | |
951 | ||
952 | if (!qh) { | |
953 | printk(KERN_ERR "qh is 0\n"); | |
954 | continue; | |
955 | } | |
956 | priv_read_copy(priv, (u32 *)&ptd, usb_hcd->regs + atl_regs, | |
957 | atl_regs, sizeof(ptd)); | |
958 | ||
959 | dw1 = le32_to_cpu(ptd.dw1); | |
960 | dw2 = le32_to_cpu(ptd.dw2); | |
961 | dw3 = le32_to_cpu(ptd.dw3); | |
962 | rl = (dw2 >> 25) & 0x0f; | |
963 | nakcount = (dw3 >> 19) & 0xf; | |
964 | ||
965 | /* Transfer Error, *but* active and no HALT -> reload */ | |
966 | if ((dw3 & DW3_ERROR_BIT) && (dw3 & DW3_QTD_ACTIVE) && | |
967 | !(dw3 & DW3_HALT_BIT)) { | |
968 | ||
969 | /* according to ppriv code, we have to | |
970 | * reload this one if trasfered bytes != requested bytes | |
971 | * else act like everything went smooth.. | |
972 | * XXX This just doesn't feel right and hasn't | |
973 | * triggered so far. | |
974 | */ | |
975 | ||
976 | length = PTD_XFERRED_LENGTH(dw3); | |
977 | printk(KERN_ERR "Should reload now.... transfered %d " | |
978 | "of %zu\n", length, qtd->length); | |
979 | BUG(); | |
980 | } | |
981 | ||
982 | if (!nakcount && (dw3 & DW3_QTD_ACTIVE)) { | |
983 | u32 buffstatus; | |
984 | ||
985 | /* XXX | |
986 | * NAKs are handled in HW by the chip. Usually if the | |
987 | * device is not able to send data fast enough. | |
988 | * This did not trigger for a long time now. | |
989 | */ | |
990 | printk(KERN_ERR "Reloading ptd %p/%p... qh %p readed: " | |
991 | "%d of %d done: %08x cur: %08x\n", qtd, | |
992 | urb, qh, PTD_XFERRED_LENGTH(dw3), | |
993 | qtd->length, done_map, | |
994 | (1 << queue_entry)); | |
995 | ||
996 | /* RL counter = ERR counter */ | |
997 | dw3 &= ~(0xf << 19); | |
998 | dw3 |= rl << 19; | |
999 | dw3 &= ~(3 << (55 - 32)); | |
1000 | dw3 |= ERR_COUNTER << (55 - 32); | |
1001 | ||
1002 | /* | |
1003 | * It is not needed to write skip map back because it | |
1004 | * is unchanged. Just make sure that this entry is | |
1005 | * unskipped once it gets written to the HW. | |
1006 | */ | |
1007 | skip_map &= ~(1 << queue_entry); | |
1008 | or_map = isp1760_readl(usb_hcd->regs + | |
1009 | HC_ATL_IRQ_MASK_OR_REG); | |
1010 | or_map |= 1 << queue_entry; | |
1011 | isp1760_writel(or_map, usb_hcd->regs + | |
1012 | HC_ATL_IRQ_MASK_OR_REG); | |
1013 | ||
1014 | ptd.dw3 = cpu_to_le32(dw3); | |
1015 | priv_write_copy(priv, (u32 *)&ptd, usb_hcd->regs + | |
1016 | atl_regs, sizeof(ptd)); | |
1017 | ||
1018 | ptd.dw0 |= __constant_cpu_to_le32(PTD_VALID); | |
1019 | priv_write_copy(priv, (u32 *)&ptd, usb_hcd->regs + | |
1020 | atl_regs, sizeof(ptd)); | |
1021 | ||
1022 | buffstatus = isp1760_readl(usb_hcd->regs + | |
1023 | HC_BUFFER_STATUS_REG); | |
1024 | buffstatus |= ATL_BUFFER; | |
1025 | isp1760_writel(buffstatus, usb_hcd->regs + | |
1026 | HC_BUFFER_STATUS_REG); | |
1027 | continue; | |
1028 | } | |
1029 | ||
1030 | error = check_error(&ptd); | |
1031 | if (error) { | |
1032 | status = error; | |
1033 | priv->atl_ints[queue_entry].qh->toggle = 0; | |
1034 | priv->atl_ints[queue_entry].qh->ping = 0; | |
1035 | urb->status = -EPIPE; | |
1036 | ||
1037 | #if 0 | |
1038 | printk(KERN_ERR "Error in %s().\n", __func__); | |
1039 | printk(KERN_ERR "IN dw0: %08x dw1: %08x dw2: %08x " | |
1040 | "dw3: %08x dw4: %08x dw5: %08x dw6: " | |
1041 | "%08x dw7: %08x\n", | |
1042 | ptd.dw0, ptd.dw1, ptd.dw2, ptd.dw3, | |
1043 | ptd.dw4, ptd.dw5, ptd.dw6, ptd.dw7); | |
1044 | #endif | |
1045 | } else { | |
1046 | if (usb_pipetype(urb->pipe) == PIPE_BULK) { | |
1047 | priv->atl_ints[queue_entry].qh->toggle = dw3 & | |
1048 | (1 << 25); | |
1049 | priv->atl_ints[queue_entry].qh->ping = dw3 & | |
1050 | (1 << 26); | |
1051 | } | |
1052 | } | |
1053 | ||
1054 | length = PTD_XFERRED_LENGTH(dw3); | |
1055 | if (length) { | |
1056 | switch (DW1_GET_PID(dw1)) { | |
1057 | case IN_PID: | |
1058 | priv_read_copy(priv, | |
1059 | priv->atl_ints[queue_entry].data_buffer, | |
1060 | usb_hcd->regs + payload, payload, | |
1061 | length); | |
1062 | ||
1063 | case OUT_PID: | |
1064 | ||
1065 | urb->actual_length += length; | |
1066 | ||
1067 | case SETUP_PID: | |
1068 | break; | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | priv->atl_ints[queue_entry].data_buffer = NULL; | |
1073 | priv->atl_ints[queue_entry].urb = NULL; | |
1074 | priv->atl_ints[queue_entry].qtd = NULL; | |
1075 | priv->atl_ints[queue_entry].qh = NULL; | |
1076 | ||
1077 | free_mem(priv, payload); | |
1078 | ||
1079 | isp1760_writel(skip_map, usb_hcd->regs + | |
1080 | HC_ATL_PTD_SKIPMAP_REG); | |
1081 | ||
1082 | if (urb->status == -EPIPE) { | |
1083 | /* HALT was received */ | |
1084 | ||
1085 | qtd = clean_up_qtdlist(qtd); | |
1086 | isp1760_urb_done(priv, urb, urb->status); | |
1087 | ||
1088 | } else if (usb_pipebulk(urb->pipe) && (length < qtd->length)) { | |
1089 | /* short BULK received */ | |
1090 | ||
1091 | printk(KERN_ERR "short bulk, %d instead %d\n", length, | |
1092 | qtd->length); | |
1093 | if (urb->transfer_flags & URB_SHORT_NOT_OK) { | |
1094 | urb->status = -EREMOTEIO; | |
1095 | printk(KERN_ERR "not okey\n"); | |
1096 | } | |
1097 | ||
1098 | if (urb->status == -EINPROGRESS) | |
1099 | urb->status = 0; | |
1100 | ||
1101 | qtd = clean_up_qtdlist(qtd); | |
1102 | ||
1103 | isp1760_urb_done(priv, urb, urb->status); | |
1104 | ||
1105 | } else if (qtd->status & URB_COMPLETE_NOTIFY) { | |
1106 | /* that was the last qtd of that URB */ | |
1107 | ||
1108 | if (urb->status == -EINPROGRESS) | |
1109 | urb->status = 0; | |
1110 | ||
1111 | qtd = clean_this_qtd(qtd); | |
1112 | isp1760_urb_done(priv, urb, urb->status); | |
1113 | ||
1114 | } else { | |
1115 | /* next QTD of this URB */ | |
1116 | ||
1117 | qtd = clean_this_qtd(qtd); | |
1118 | BUG_ON(!qtd); | |
1119 | } | |
1120 | ||
1121 | if (qtd) | |
1122 | enqueue_an_ATL_packet(usb_hcd, qh, qtd); | |
1123 | ||
1124 | skip_map = isp1760_readl(usb_hcd->regs + | |
1125 | HC_ATL_PTD_SKIPMAP_REG); | |
1126 | } | |
1127 | } | |
1128 | ||
1129 | static void do_intl_int(struct usb_hcd *usb_hcd) | |
1130 | { | |
1131 | struct isp1760_hcd *priv = hcd_to_priv(usb_hcd); | |
1132 | u32 done_map, skip_map; | |
1133 | struct ptd ptd; | |
1134 | struct urb *urb = NULL; | |
1135 | u32 int_regs; | |
1136 | u32 int_regs_base; | |
1137 | u32 payload; | |
1138 | u32 length; | |
1139 | u32 or_map; | |
1140 | int error; | |
1141 | u32 queue_entry; | |
1142 | struct isp1760_qtd *qtd; | |
1143 | struct isp1760_qh *qh; | |
1144 | ||
1145 | done_map = isp1760_readl(usb_hcd->regs + | |
1146 | HC_INT_PTD_DONEMAP_REG); | |
1147 | skip_map = isp1760_readl(usb_hcd->regs + | |
1148 | HC_INT_PTD_SKIPMAP_REG); | |
1149 | ||
1150 | or_map = isp1760_readl(usb_hcd->regs + HC_INT_IRQ_MASK_OR_REG); | |
1151 | or_map &= ~done_map; | |
1152 | isp1760_writel(or_map, usb_hcd->regs + HC_INT_IRQ_MASK_OR_REG); | |
1153 | ||
1154 | int_regs_base = INT_REGS_OFFSET; | |
1155 | ||
1156 | while (done_map) { | |
1157 | u32 dw1; | |
1158 | u32 dw3; | |
1159 | ||
1160 | queue_entry = __ffs(done_map); | |
1161 | done_map &= ~(1 << queue_entry); | |
1162 | skip_map |= 1 << queue_entry; | |
1163 | ||
1164 | int_regs = int_regs_base + queue_entry * sizeof(struct ptd); | |
1165 | urb = priv->int_ints[queue_entry].urb; | |
1166 | qtd = priv->int_ints[queue_entry].qtd; | |
1167 | qh = priv->int_ints[queue_entry].qh; | |
1168 | payload = priv->int_ints[queue_entry].payload; | |
1169 | ||
1170 | if (!qh) { | |
1171 | printk(KERN_ERR "(INT) qh is 0\n"); | |
1172 | continue; | |
1173 | } | |
1174 | ||
1175 | priv_read_copy(priv, (u32 *)&ptd, usb_hcd->regs + int_regs, | |
1176 | int_regs, sizeof(ptd)); | |
1177 | dw1 = le32_to_cpu(ptd.dw1); | |
1178 | dw3 = le32_to_cpu(ptd.dw3); | |
1179 | check_int_err_status(le32_to_cpu(ptd.dw4)); | |
1180 | ||
1181 | error = check_error(&ptd); | |
1182 | if (error) { | |
1183 | #if 0 | |
1184 | printk(KERN_ERR "Error in %s().\n", __func__); | |
1185 | printk(KERN_ERR "IN dw0: %08x dw1: %08x dw2: %08x " | |
1186 | "dw3: %08x dw4: %08x dw5: %08x dw6: " | |
1187 | "%08x dw7: %08x\n", | |
1188 | ptd.dw0, ptd.dw1, ptd.dw2, ptd.dw3, | |
1189 | ptd.dw4, ptd.dw5, ptd.dw6, ptd.dw7); | |
1190 | #endif | |
1191 | urb->status = -EPIPE; | |
1192 | priv->int_ints[queue_entry].qh->toggle = 0; | |
1193 | priv->int_ints[queue_entry].qh->ping = 0; | |
1194 | ||
1195 | } else { | |
1196 | priv->int_ints[queue_entry].qh->toggle = | |
1197 | dw3 & (1 << 25); | |
1198 | priv->int_ints[queue_entry].qh->ping = dw3 & (1 << 26); | |
1199 | } | |
1200 | ||
1201 | if (urb->dev->speed != USB_SPEED_HIGH) | |
1202 | length = PTD_XFERRED_LENGTH_LO(dw3); | |
1203 | else | |
1204 | length = PTD_XFERRED_LENGTH(dw3); | |
1205 | ||
1206 | if (length) { | |
1207 | switch (DW1_GET_PID(dw1)) { | |
1208 | case IN_PID: | |
1209 | priv_read_copy(priv, | |
1210 | priv->int_ints[queue_entry].data_buffer, | |
1211 | usb_hcd->regs + payload , payload, | |
1212 | length); | |
1213 | case OUT_PID: | |
1214 | ||
1215 | urb->actual_length += length; | |
1216 | ||
1217 | case SETUP_PID: | |
1218 | break; | |
1219 | } | |
1220 | } | |
1221 | ||
1222 | priv->int_ints[queue_entry].data_buffer = NULL; | |
1223 | priv->int_ints[queue_entry].urb = NULL; | |
1224 | priv->int_ints[queue_entry].qtd = NULL; | |
1225 | priv->int_ints[queue_entry].qh = NULL; | |
1226 | ||
1227 | isp1760_writel(skip_map, usb_hcd->regs + | |
1228 | HC_INT_PTD_SKIPMAP_REG); | |
1229 | free_mem(priv, payload); | |
1230 | ||
1231 | if (urb->status == -EPIPE) { | |
1232 | /* HALT received */ | |
1233 | ||
1234 | qtd = clean_up_qtdlist(qtd); | |
1235 | isp1760_urb_done(priv, urb, urb->status); | |
1236 | ||
1237 | } else if (qtd->status & URB_COMPLETE_NOTIFY) { | |
1238 | ||
1239 | if (urb->status == -EINPROGRESS) | |
1240 | urb->status = 0; | |
1241 | ||
1242 | qtd = clean_this_qtd(qtd); | |
1243 | isp1760_urb_done(priv, urb, urb->status); | |
1244 | ||
1245 | } else { | |
1246 | /* next QTD of this URB */ | |
1247 | ||
1248 | qtd = clean_this_qtd(qtd); | |
1249 | BUG_ON(!qtd); | |
1250 | } | |
1251 | ||
1252 | if (qtd) | |
1253 | enqueue_an_INT_packet(usb_hcd, qh, qtd); | |
1254 | ||
1255 | skip_map = isp1760_readl(usb_hcd->regs + | |
1256 | HC_INT_PTD_SKIPMAP_REG); | |
1257 | } | |
1258 | } | |
1259 | ||
1260 | #define max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff) | |
1261 | static struct isp1760_qh *qh_make(struct isp1760_hcd *priv, struct urb *urb, | |
1262 | gfp_t flags) | |
1263 | { | |
1264 | struct isp1760_qh *qh; | |
1265 | int is_input, type; | |
1266 | ||
1267 | qh = isp1760_qh_alloc(priv, flags); | |
1268 | if (!qh) | |
1269 | return qh; | |
1270 | ||
1271 | /* | |
1272 | * init endpoint/device data for this QH | |
1273 | */ | |
1274 | is_input = usb_pipein(urb->pipe); | |
1275 | type = usb_pipetype(urb->pipe); | |
1276 | ||
1277 | if (type == PIPE_INTERRUPT) { | |
1278 | ||
1279 | if (urb->dev->speed == USB_SPEED_HIGH) { | |
1280 | ||
1281 | qh->period = urb->interval >> 3; | |
1282 | if (qh->period == 0 && urb->interval != 1) { | |
1283 | /* NOTE interval 2 or 4 uframes could work. | |
1284 | * But interval 1 scheduling is simpler, and | |
1285 | * includes high bandwidth. | |
1286 | */ | |
1287 | printk(KERN_ERR "intr period %d uframes, NYET!", | |
1288 | urb->interval); | |
1289 | qh_destroy(qh); | |
1290 | return NULL; | |
1291 | } | |
1292 | } else { | |
1293 | qh->period = urb->interval; | |
1294 | } | |
1295 | } | |
1296 | ||
1297 | /* support for tt scheduling, and access to toggles */ | |
1298 | qh->dev = urb->dev; | |
1299 | ||
1300 | if (!usb_pipecontrol(urb->pipe)) | |
1301 | usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), !is_input, | |
1302 | 1); | |
1303 | return qh; | |
1304 | } | |
1305 | ||
1306 | /* | |
1307 | * For control/bulk/interrupt, return QH with these TDs appended. | |
1308 | * Allocates and initializes the QH if necessary. | |
1309 | * Returns null if it can't allocate a QH it needs to. | |
1310 | * If the QH has TDs (urbs) already, that's great. | |
1311 | */ | |
1312 | static struct isp1760_qh *qh_append_tds(struct isp1760_hcd *priv, | |
1313 | struct urb *urb, struct list_head *qtd_list, int epnum, | |
1314 | void **ptr) | |
1315 | { | |
1316 | struct isp1760_qh *qh; | |
1317 | struct isp1760_qtd *qtd; | |
1318 | struct isp1760_qtd *prev_qtd; | |
1319 | ||
1320 | qh = (struct isp1760_qh *)*ptr; | |
1321 | if (!qh) { | |
1322 | /* can't sleep here, we have priv->lock... */ | |
1323 | qh = qh_make(priv, urb, GFP_ATOMIC); | |
1324 | if (!qh) | |
1325 | return qh; | |
1326 | *ptr = qh; | |
1327 | } | |
1328 | ||
1329 | qtd = list_entry(qtd_list->next, struct isp1760_qtd, | |
1330 | qtd_list); | |
1331 | if (!list_empty(&qh->qtd_list)) | |
1332 | prev_qtd = list_entry(qh->qtd_list.prev, | |
1333 | struct isp1760_qtd, qtd_list); | |
1334 | else | |
1335 | prev_qtd = NULL; | |
1336 | ||
1337 | list_splice(qtd_list, qh->qtd_list.prev); | |
1338 | if (prev_qtd) { | |
1339 | BUG_ON(prev_qtd->hw_next); | |
1340 | prev_qtd->hw_next = qtd; | |
1341 | } | |
1342 | ||
1343 | urb->hcpriv = qh; | |
1344 | return qh; | |
1345 | } | |
1346 | ||
1347 | static void qtd_list_free(struct isp1760_hcd *priv, struct urb *urb, | |
1348 | struct list_head *qtd_list) | |
1349 | { | |
1350 | struct list_head *entry, *temp; | |
1351 | ||
1352 | list_for_each_safe(entry, temp, qtd_list) { | |
1353 | struct isp1760_qtd *qtd; | |
1354 | ||
1355 | qtd = list_entry(entry, struct isp1760_qtd, qtd_list); | |
1356 | list_del(&qtd->qtd_list); | |
1357 | isp1760_qtd_free(qtd); | |
1358 | } | |
1359 | } | |
1360 | ||
1361 | static int isp1760_prepare_enqueue(struct isp1760_hcd *priv, struct urb *urb, | |
1362 | struct list_head *qtd_list, gfp_t mem_flags, packet_enqueue *p) | |
1363 | { | |
1364 | struct isp1760_qtd *qtd; | |
1365 | int epnum; | |
1366 | unsigned long flags; | |
1367 | struct isp1760_qh *qh = NULL; | |
1368 | int rc; | |
1369 | int qh_busy; | |
1370 | ||
1371 | qtd = list_entry(qtd_list->next, struct isp1760_qtd, qtd_list); | |
1372 | epnum = urb->ep->desc.bEndpointAddress; | |
1373 | ||
1374 | spin_lock_irqsave(&priv->lock, flags); | |
1375 | if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &priv_to_hcd(priv)->flags)) { | |
1376 | rc = -ESHUTDOWN; | |
1377 | goto done; | |
1378 | } | |
1379 | rc = usb_hcd_link_urb_to_ep(priv_to_hcd(priv), urb); | |
1380 | if (rc) | |
1381 | goto done; | |
1382 | ||
1383 | qh = urb->ep->hcpriv; | |
1384 | if (qh) | |
1385 | qh_busy = !list_empty(&qh->qtd_list); | |
1386 | else | |
1387 | qh_busy = 0; | |
1388 | ||
1389 | qh = qh_append_tds(priv, urb, qtd_list, epnum, &urb->ep->hcpriv); | |
1390 | if (!qh) { | |
1391 | usb_hcd_unlink_urb_from_ep(priv_to_hcd(priv), urb); | |
1392 | rc = -ENOMEM; | |
1393 | goto done; | |
1394 | } | |
1395 | ||
1396 | if (!qh_busy) | |
1397 | p(priv_to_hcd(priv), qh, qtd); | |
1398 | ||
1399 | done: | |
1400 | spin_unlock_irqrestore(&priv->lock, flags); | |
1401 | if (!qh) | |
1402 | qtd_list_free(priv, urb, qtd_list); | |
1403 | return rc; | |
1404 | } | |
1405 | ||
1406 | static struct isp1760_qtd *isp1760_qtd_alloc(struct isp1760_hcd *priv, | |
1407 | gfp_t flags) | |
1408 | { | |
1409 | struct isp1760_qtd *qtd; | |
1410 | ||
1411 | qtd = kmem_cache_zalloc(qtd_cachep, flags); | |
1412 | if (qtd) | |
1413 | INIT_LIST_HEAD(&qtd->qtd_list); | |
1414 | ||
1415 | return qtd; | |
1416 | } | |
1417 | ||
1418 | /* | |
1419 | * create a list of filled qtds for this URB; won't link into qh. | |
1420 | */ | |
1421 | static struct list_head *qh_urb_transaction(struct isp1760_hcd *priv, | |
1422 | struct urb *urb, struct list_head *head, gfp_t flags) | |
1423 | { | |
1424 | struct isp1760_qtd *qtd, *qtd_prev; | |
1425 | void *buf; | |
1426 | int len, maxpacket; | |
1427 | int is_input; | |
1428 | u32 token; | |
1429 | ||
1430 | /* | |
1431 | * URBs map to sequences of QTDs: one logical transaction | |
1432 | */ | |
1433 | qtd = isp1760_qtd_alloc(priv, flags); | |
1434 | if (!qtd) | |
1435 | return NULL; | |
1436 | ||
1437 | list_add_tail(&qtd->qtd_list, head); | |
1438 | qtd->urb = urb; | |
1439 | urb->status = -EINPROGRESS; | |
1440 | ||
1441 | token = 0; | |
1442 | /* for split transactions, SplitXState initialized to zero */ | |
1443 | ||
1444 | len = urb->transfer_buffer_length; | |
1445 | is_input = usb_pipein(urb->pipe); | |
1446 | if (usb_pipecontrol(urb->pipe)) { | |
1447 | /* SETUP pid */ | |
1448 | qtd_fill(qtd, urb->setup_packet, | |
1449 | sizeof(struct usb_ctrlrequest), | |
1450 | token | SETUP_PID); | |
1451 | ||
1452 | /* ... and always at least one more pid */ | |
1453 | token ^= DATA_TOGGLE; | |
1454 | qtd_prev = qtd; | |
1455 | qtd = isp1760_qtd_alloc(priv, flags); | |
1456 | if (!qtd) | |
1457 | goto cleanup; | |
1458 | qtd->urb = urb; | |
1459 | qtd_prev->hw_next = qtd; | |
1460 | list_add_tail(&qtd->qtd_list, head); | |
1461 | ||
1462 | /* for zero length DATA stages, STATUS is always IN */ | |
1463 | if (len == 0) | |
1464 | token |= IN_PID; | |
1465 | } | |
1466 | ||
1467 | /* | |
1468 | * data transfer stage: buffer setup | |
1469 | */ | |
1470 | buf = urb->transfer_buffer; | |
1471 | ||
1472 | if (is_input) | |
1473 | token |= IN_PID; | |
1474 | else | |
1475 | token |= OUT_PID; | |
1476 | ||
1477 | maxpacket = max_packet(usb_maxpacket(urb->dev, urb->pipe, !is_input)); | |
1478 | ||
1479 | /* | |
1480 | * buffer gets wrapped in one or more qtds; | |
1481 | * last one may be "short" (including zero len) | |
1482 | * and may serve as a control status ack | |
1483 | */ | |
1484 | for (;;) { | |
1485 | int this_qtd_len; | |
1486 | ||
1487 | if (!buf && len) { | |
1488 | /* XXX This looks like usb storage / SCSI bug */ | |
1489 | printk(KERN_ERR "buf is null, dma is %08lx len is %d\n", | |
1490 | (long unsigned)urb->transfer_dma, len); | |
1491 | WARN_ON(1); | |
1492 | } | |
1493 | ||
1494 | this_qtd_len = qtd_fill(qtd, buf, len, token); | |
1495 | len -= this_qtd_len; | |
1496 | buf += this_qtd_len; | |
1497 | ||
1498 | /* qh makes control packets use qtd toggle; maybe switch it */ | |
1499 | if ((maxpacket & (this_qtd_len + (maxpacket - 1))) == 0) | |
1500 | token ^= DATA_TOGGLE; | |
1501 | ||
1502 | if (len <= 0) | |
1503 | break; | |
1504 | ||
1505 | qtd_prev = qtd; | |
1506 | qtd = isp1760_qtd_alloc(priv, flags); | |
1507 | if (!qtd) | |
1508 | goto cleanup; | |
1509 | qtd->urb = urb; | |
1510 | qtd_prev->hw_next = qtd; | |
1511 | list_add_tail(&qtd->qtd_list, head); | |
1512 | } | |
1513 | ||
1514 | /* | |
1515 | * control requests may need a terminating data "status" ack; | |
1516 | * bulk ones may need a terminating short packet (zero length). | |
1517 | */ | |
1518 | if (urb->transfer_buffer_length != 0) { | |
1519 | int one_more = 0; | |
1520 | ||
1521 | if (usb_pipecontrol(urb->pipe)) { | |
1522 | one_more = 1; | |
1523 | /* "in" <--> "out" */ | |
1524 | token ^= IN_PID; | |
1525 | /* force DATA1 */ | |
1526 | token |= DATA_TOGGLE; | |
1527 | } else if (usb_pipebulk(urb->pipe) | |
1528 | && (urb->transfer_flags & URB_ZERO_PACKET) | |
1529 | && !(urb->transfer_buffer_length % maxpacket)) { | |
1530 | one_more = 1; | |
1531 | } | |
1532 | if (one_more) { | |
1533 | qtd_prev = qtd; | |
1534 | qtd = isp1760_qtd_alloc(priv, flags); | |
1535 | if (!qtd) | |
1536 | goto cleanup; | |
1537 | qtd->urb = urb; | |
1538 | qtd_prev->hw_next = qtd; | |
1539 | list_add_tail(&qtd->qtd_list, head); | |
1540 | ||
1541 | /* never any data in such packets */ | |
1542 | qtd_fill(qtd, NULL, 0, token); | |
1543 | } | |
1544 | } | |
1545 | ||
1546 | qtd->status = URB_COMPLETE_NOTIFY; | |
1547 | return head; | |
1548 | ||
1549 | cleanup: | |
1550 | qtd_list_free(priv, urb, head); | |
1551 | return NULL; | |
1552 | } | |
1553 | ||
1554 | static int isp1760_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, | |
1555 | gfp_t mem_flags) | |
1556 | { | |
1557 | struct isp1760_hcd *priv = hcd_to_priv(hcd); | |
1558 | struct list_head qtd_list; | |
1559 | packet_enqueue *pe; | |
1560 | ||
1561 | INIT_LIST_HEAD(&qtd_list); | |
1562 | ||
1563 | switch (usb_pipetype(urb->pipe)) { | |
1564 | case PIPE_CONTROL: | |
1565 | case PIPE_BULK: | |
1566 | ||
1567 | if (!qh_urb_transaction(priv, urb, &qtd_list, mem_flags)) | |
1568 | return -ENOMEM; | |
1569 | pe = enqueue_an_ATL_packet; | |
1570 | break; | |
1571 | ||
1572 | case PIPE_INTERRUPT: | |
1573 | if (!qh_urb_transaction(priv, urb, &qtd_list, mem_flags)) | |
1574 | return -ENOMEM; | |
1575 | pe = enqueue_an_INT_packet; | |
1576 | break; | |
1577 | ||
1578 | case PIPE_ISOCHRONOUS: | |
1579 | printk(KERN_ERR "PIPE_ISOCHRONOUS ain't supported\n"); | |
1580 | default: | |
1581 | return -EPIPE; | |
1582 | } | |
1583 | ||
1584 | isp1760_prepare_enqueue(priv, urb, &qtd_list, mem_flags, pe); | |
1585 | return 0; | |
1586 | } | |
1587 | ||
1588 | static int isp1760_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, | |
1589 | int status) | |
1590 | { | |
1591 | struct isp1760_hcd *priv = hcd_to_priv(hcd); | |
1592 | struct inter_packet_info *ints; | |
1593 | u32 i; | |
1594 | u32 reg_base, or_reg, skip_reg; | |
1595 | int flags; | |
1596 | struct ptd ptd; | |
1597 | ||
1598 | switch (usb_pipetype(urb->pipe)) { | |
1599 | case PIPE_ISOCHRONOUS: | |
1600 | return -EPIPE; | |
1601 | break; | |
1602 | ||
1603 | case PIPE_INTERRUPT: | |
1604 | ints = priv->int_ints; | |
1605 | reg_base = INT_REGS_OFFSET; | |
1606 | or_reg = HC_INT_IRQ_MASK_OR_REG; | |
1607 | skip_reg = HC_INT_PTD_SKIPMAP_REG; | |
1608 | break; | |
1609 | ||
1610 | default: | |
1611 | ints = priv->atl_ints; | |
1612 | reg_base = ATL_REGS_OFFSET; | |
1613 | or_reg = HC_ATL_IRQ_MASK_OR_REG; | |
1614 | skip_reg = HC_ATL_PTD_SKIPMAP_REG; | |
1615 | break; | |
1616 | } | |
1617 | ||
1618 | memset(&ptd, 0, sizeof(ptd)); | |
1619 | spin_lock_irqsave(&priv->lock, flags); | |
1620 | ||
1621 | for (i = 0; i < 32; i++) { | |
1622 | if (ints->urb == urb) { | |
1623 | u32 skip_map; | |
1624 | u32 or_map; | |
1625 | struct isp1760_qtd *qtd; | |
1626 | ||
1627 | skip_map = isp1760_readl(hcd->regs + skip_reg); | |
1628 | skip_map |= 1 << i; | |
1629 | isp1760_writel(skip_map, hcd->regs + skip_reg); | |
1630 | ||
1631 | or_map = isp1760_readl(hcd->regs + or_reg); | |
1632 | or_map &= ~(1 << i); | |
1633 | isp1760_writel(or_map, hcd->regs + or_reg); | |
1634 | ||
1635 | priv_write_copy(priv, (u32 *)&ptd, hcd->regs + reg_base | |
1636 | + i * sizeof(ptd), sizeof(ptd)); | |
1637 | qtd = ints->qtd; | |
1638 | ||
1639 | clean_up_qtdlist(qtd); | |
1640 | ||
1641 | free_mem(priv, ints->payload); | |
1642 | ||
1643 | ints->urb = NULL; | |
1644 | ints->qh = NULL; | |
1645 | ints->qtd = NULL; | |
1646 | ints->data_buffer = NULL; | |
1647 | ints->payload = 0; | |
1648 | ||
1649 | isp1760_urb_done(priv, urb, status); | |
1650 | break; | |
1651 | } | |
1652 | ints++; | |
1653 | } | |
1654 | ||
1655 | spin_unlock_irqrestore(&priv->lock, flags); | |
1656 | return 0; | |
1657 | } | |
1658 | ||
1659 | static irqreturn_t isp1760_irq(struct usb_hcd *usb_hcd) | |
1660 | { | |
1661 | struct isp1760_hcd *priv = hcd_to_priv(usb_hcd); | |
1662 | u32 imask; | |
1663 | irqreturn_t irqret = IRQ_NONE; | |
1664 | ||
1665 | spin_lock(&priv->lock); | |
1666 | ||
1667 | if (!(usb_hcd->state & HC_STATE_RUNNING)) | |
1668 | goto leave; | |
1669 | ||
1670 | imask = isp1760_readl(usb_hcd->regs + HC_INTERRUPT_REG); | |
1671 | if (unlikely(!imask)) | |
1672 | goto leave; | |
1673 | ||
1674 | isp1760_writel(imask, usb_hcd->regs + HC_INTERRUPT_REG); | |
1675 | if (imask & HC_ATL_INT) | |
1676 | do_atl_int(usb_hcd); | |
1677 | ||
1678 | if (imask & HC_INTL_INT) | |
1679 | do_intl_int(usb_hcd); | |
1680 | ||
1681 | irqret = IRQ_HANDLED; | |
1682 | leave: | |
1683 | spin_unlock(&priv->lock); | |
1684 | return irqret; | |
1685 | } | |
1686 | ||
1687 | static int isp1760_hub_status_data(struct usb_hcd *hcd, char *buf) | |
1688 | { | |
1689 | struct isp1760_hcd *priv = hcd_to_priv(hcd); | |
1690 | u32 temp, status = 0; | |
1691 | u32 mask; | |
1692 | int retval = 1; | |
1693 | unsigned long flags; | |
1694 | ||
1695 | /* if !USB_SUSPEND, root hub timers won't get shut down ... */ | |
1696 | if (!HC_IS_RUNNING(hcd->state)) | |
1697 | return 0; | |
1698 | ||
1699 | /* init status to no-changes */ | |
1700 | buf[0] = 0; | |
1701 | mask = PORT_CSC; | |
1702 | ||
1703 | spin_lock_irqsave(&priv->lock, flags); | |
1704 | temp = isp1760_readl(hcd->regs + HC_PORTSC1); | |
1705 | ||
1706 | if (temp & PORT_OWNER) { | |
1707 | if (temp & PORT_CSC) { | |
1708 | temp &= ~PORT_CSC; | |
1709 | isp1760_writel(temp, hcd->regs + HC_PORTSC1); | |
1710 | goto done; | |
1711 | } | |
1712 | } | |
1713 | ||
1714 | /* | |
1715 | * Return status information even for ports with OWNER set. | |
1716 | * Otherwise khubd wouldn't see the disconnect event when a | |
1717 | * high-speed device is switched over to the companion | |
1718 | * controller by the user. | |
1719 | */ | |
1720 | ||
1721 | if ((temp & mask) != 0 | |
1722 | || ((temp & PORT_RESUME) != 0 | |
1723 | && time_after_eq(jiffies, | |
1724 | priv->reset_done))) { | |
1725 | buf [0] |= 1 << (0 + 1); | |
1726 | status = STS_PCD; | |
1727 | } | |
1728 | /* FIXME autosuspend idle root hubs */ | |
1729 | done: | |
1730 | spin_unlock_irqrestore(&priv->lock, flags); | |
1731 | return status ? retval : 0; | |
1732 | } | |
1733 | ||
1734 | static void isp1760_hub_descriptor(struct isp1760_hcd *priv, | |
1735 | struct usb_hub_descriptor *desc) | |
1736 | { | |
1737 | int ports = HCS_N_PORTS(priv->hcs_params); | |
1738 | u16 temp; | |
1739 | ||
1740 | desc->bDescriptorType = 0x29; | |
1741 | /* priv 1.0, 2.3.9 says 20ms max */ | |
1742 | desc->bPwrOn2PwrGood = 10; | |
1743 | desc->bHubContrCurrent = 0; | |
1744 | ||
1745 | desc->bNbrPorts = ports; | |
1746 | temp = 1 + (ports / 8); | |
1747 | desc->bDescLength = 7 + 2 * temp; | |
1748 | ||
1749 | /* two bitmaps: ports removable, and usb 1.0 legacy PortPwrCtrlMask */ | |
1750 | memset(&desc->bitmap[0], 0, temp); | |
1751 | memset(&desc->bitmap[temp], 0xff, temp); | |
1752 | ||
1753 | /* per-port overcurrent reporting */ | |
1754 | temp = 0x0008; | |
1755 | if (HCS_PPC(priv->hcs_params)) | |
1756 | /* per-port power control */ | |
1757 | temp |= 0x0001; | |
1758 | else | |
1759 | /* no power switching */ | |
1760 | temp |= 0x0002; | |
1761 | desc->wHubCharacteristics = cpu_to_le16(temp); | |
1762 | } | |
1763 | ||
1764 | #define PORT_WAKE_BITS (PORT_WKOC_E|PORT_WKDISC_E|PORT_WKCONN_E) | |
1765 | ||
1766 | static int check_reset_complete(struct isp1760_hcd *priv, int index, | |
1767 | u32 __iomem *status_reg, int port_status) | |
1768 | { | |
1769 | if (!(port_status & PORT_CONNECT)) | |
1770 | return port_status; | |
1771 | ||
1772 | /* if reset finished and it's still not enabled -- handoff */ | |
1773 | if (!(port_status & PORT_PE)) { | |
1774 | ||
1775 | printk(KERN_ERR "port %d full speed --> companion\n", | |
1776 | index + 1); | |
1777 | ||
1778 | port_status |= PORT_OWNER; | |
1779 | port_status &= ~PORT_RWC_BITS; | |
1780 | isp1760_writel(port_status, status_reg); | |
1781 | ||
1782 | } else | |
1783 | printk(KERN_ERR "port %d high speed\n", index + 1); | |
1784 | ||
1785 | return port_status; | |
1786 | } | |
1787 | ||
1788 | static int isp1760_hub_control(struct usb_hcd *hcd, u16 typeReq, | |
1789 | u16 wValue, u16 wIndex, char *buf, u16 wLength) | |
1790 | { | |
1791 | struct isp1760_hcd *priv = hcd_to_priv(hcd); | |
1792 | int ports = HCS_N_PORTS(priv->hcs_params); | |
1793 | u32 __iomem *status_reg = hcd->regs + HC_PORTSC1; | |
1794 | u32 temp, status; | |
1795 | unsigned long flags; | |
1796 | int retval = 0; | |
1797 | unsigned selector; | |
1798 | ||
1799 | /* | |
1800 | * FIXME: support SetPortFeatures USB_PORT_FEAT_INDICATOR. | |
1801 | * HCS_INDICATOR may say we can change LEDs to off/amber/green. | |
1802 | * (track current state ourselves) ... blink for diagnostics, | |
1803 | * power, "this is the one", etc. EHCI spec supports this. | |
1804 | */ | |
1805 | ||
1806 | spin_lock_irqsave(&priv->lock, flags); | |
1807 | switch (typeReq) { | |
1808 | case ClearHubFeature: | |
1809 | switch (wValue) { | |
1810 | case C_HUB_LOCAL_POWER: | |
1811 | case C_HUB_OVER_CURRENT: | |
1812 | /* no hub-wide feature/status flags */ | |
1813 | break; | |
1814 | default: | |
1815 | goto error; | |
1816 | } | |
1817 | break; | |
1818 | case ClearPortFeature: | |
1819 | if (!wIndex || wIndex > ports) | |
1820 | goto error; | |
1821 | wIndex--; | |
1822 | temp = isp1760_readl(status_reg); | |
1823 | ||
1824 | /* | |
1825 | * Even if OWNER is set, so the port is owned by the | |
1826 | * companion controller, khubd needs to be able to clear | |
1827 | * the port-change status bits (especially | |
1828 | * USB_PORT_FEAT_C_CONNECTION). | |
1829 | */ | |
1830 | ||
1831 | switch (wValue) { | |
1832 | case USB_PORT_FEAT_ENABLE: | |
1833 | isp1760_writel(temp & ~PORT_PE, status_reg); | |
1834 | break; | |
1835 | case USB_PORT_FEAT_C_ENABLE: | |
1836 | /* XXX error? */ | |
1837 | break; | |
1838 | case USB_PORT_FEAT_SUSPEND: | |
1839 | if (temp & PORT_RESET) | |
1840 | goto error; | |
1841 | ||
1842 | if (temp & PORT_SUSPEND) { | |
1843 | if ((temp & PORT_PE) == 0) | |
1844 | goto error; | |
1845 | /* resume signaling for 20 msec */ | |
1846 | temp &= ~(PORT_RWC_BITS); | |
1847 | isp1760_writel(temp | PORT_RESUME, | |
1848 | status_reg); | |
1849 | priv->reset_done = jiffies + | |
1850 | msecs_to_jiffies(20); | |
1851 | } | |
1852 | break; | |
1853 | case USB_PORT_FEAT_C_SUSPEND: | |
1854 | /* we auto-clear this feature */ | |
1855 | break; | |
1856 | case USB_PORT_FEAT_POWER: | |
1857 | if (HCS_PPC(priv->hcs_params)) | |
1858 | isp1760_writel(temp & ~PORT_POWER, status_reg); | |
1859 | break; | |
1860 | case USB_PORT_FEAT_C_CONNECTION: | |
1861 | isp1760_writel(temp | PORT_CSC, | |
1862 | status_reg); | |
1863 | break; | |
1864 | case USB_PORT_FEAT_C_OVER_CURRENT: | |
1865 | /* XXX error ?*/ | |
1866 | break; | |
1867 | case USB_PORT_FEAT_C_RESET: | |
1868 | /* GetPortStatus clears reset */ | |
1869 | break; | |
1870 | default: | |
1871 | goto error; | |
1872 | } | |
1873 | isp1760_readl(hcd->regs + HC_USBCMD); | |
1874 | break; | |
1875 | case GetHubDescriptor: | |
1876 | isp1760_hub_descriptor(priv, (struct usb_hub_descriptor *) | |
1877 | buf); | |
1878 | break; | |
1879 | case GetHubStatus: | |
1880 | /* no hub-wide feature/status flags */ | |
1881 | memset(buf, 0, 4); | |
1882 | break; | |
1883 | case GetPortStatus: | |
1884 | if (!wIndex || wIndex > ports) | |
1885 | goto error; | |
1886 | wIndex--; | |
1887 | status = 0; | |
1888 | temp = isp1760_readl(status_reg); | |
1889 | ||
1890 | /* wPortChange bits */ | |
1891 | if (temp & PORT_CSC) | |
1892 | status |= 1 << USB_PORT_FEAT_C_CONNECTION; | |
1893 | ||
1894 | ||
1895 | /* whoever resumes must GetPortStatus to complete it!! */ | |
1896 | if (temp & PORT_RESUME) { | |
1897 | printk(KERN_ERR "Port resume should be skipped.\n"); | |
1898 | ||
1899 | /* Remote Wakeup received? */ | |
1900 | if (!priv->reset_done) { | |
1901 | /* resume signaling for 20 msec */ | |
1902 | priv->reset_done = jiffies | |
1903 | + msecs_to_jiffies(20); | |
1904 | /* check the port again */ | |
1905 | mod_timer(&priv_to_hcd(priv)->rh_timer, | |
1906 | priv->reset_done); | |
1907 | } | |
1908 | ||
1909 | /* resume completed? */ | |
1910 | else if (time_after_eq(jiffies, | |
1911 | priv->reset_done)) { | |
1912 | status |= 1 << USB_PORT_FEAT_C_SUSPEND; | |
1913 | priv->reset_done = 0; | |
1914 | ||
1915 | /* stop resume signaling */ | |
1916 | temp = isp1760_readl(status_reg); | |
1917 | isp1760_writel( | |
1918 | temp & ~(PORT_RWC_BITS | PORT_RESUME), | |
1919 | status_reg); | |
1920 | retval = handshake(priv, status_reg, | |
1921 | PORT_RESUME, 0, 2000 /* 2msec */); | |
1922 | if (retval != 0) { | |
1923 | isp1760_err(priv, | |
1924 | "port %d resume error %d\n", | |
1925 | wIndex + 1, retval); | |
1926 | goto error; | |
1927 | } | |
1928 | temp &= ~(PORT_SUSPEND|PORT_RESUME|(3<<10)); | |
1929 | } | |
1930 | } | |
1931 | ||
1932 | /* whoever resets must GetPortStatus to complete it!! */ | |
1933 | if ((temp & PORT_RESET) | |
1934 | && time_after_eq(jiffies, | |
1935 | priv->reset_done)) { | |
1936 | status |= 1 << USB_PORT_FEAT_C_RESET; | |
1937 | priv->reset_done = 0; | |
1938 | ||
1939 | /* force reset to complete */ | |
1940 | isp1760_writel(temp & ~PORT_RESET, | |
1941 | status_reg); | |
1942 | /* REVISIT: some hardware needs 550+ usec to clear | |
1943 | * this bit; seems too long to spin routinely... | |
1944 | */ | |
1945 | retval = handshake(priv, status_reg, | |
1946 | PORT_RESET, 0, 750); | |
1947 | if (retval != 0) { | |
1948 | isp1760_err(priv, "port %d reset error %d\n", | |
1949 | wIndex + 1, retval); | |
1950 | goto error; | |
1951 | } | |
1952 | ||
1953 | /* see what we found out */ | |
1954 | temp = check_reset_complete(priv, wIndex, status_reg, | |
1955 | isp1760_readl(status_reg)); | |
1956 | } | |
1957 | /* | |
1958 | * Even if OWNER is set, there's no harm letting khubd | |
1959 | * see the wPortStatus values (they should all be 0 except | |
1960 | * for PORT_POWER anyway). | |
1961 | */ | |
1962 | ||
1963 | if (temp & PORT_OWNER) | |
1964 | printk(KERN_ERR "Warning: PORT_OWNER is set\n"); | |
1965 | ||
1966 | if (temp & PORT_CONNECT) { | |
1967 | status |= 1 << USB_PORT_FEAT_CONNECTION; | |
1968 | /* status may be from integrated TT */ | |
1969 | status |= ehci_port_speed(priv, temp); | |
1970 | } | |
1971 | if (temp & PORT_PE) | |
1972 | status |= 1 << USB_PORT_FEAT_ENABLE; | |
1973 | if (temp & (PORT_SUSPEND|PORT_RESUME)) | |
1974 | status |= 1 << USB_PORT_FEAT_SUSPEND; | |
1975 | if (temp & PORT_RESET) | |
1976 | status |= 1 << USB_PORT_FEAT_RESET; | |
1977 | if (temp & PORT_POWER) | |
1978 | status |= 1 << USB_PORT_FEAT_POWER; | |
1979 | ||
1980 | put_unaligned(cpu_to_le32(status), (__le32 *) buf); | |
1981 | break; | |
1982 | case SetHubFeature: | |
1983 | switch (wValue) { | |
1984 | case C_HUB_LOCAL_POWER: | |
1985 | case C_HUB_OVER_CURRENT: | |
1986 | /* no hub-wide feature/status flags */ | |
1987 | break; | |
1988 | default: | |
1989 | goto error; | |
1990 | } | |
1991 | break; | |
1992 | case SetPortFeature: | |
1993 | selector = wIndex >> 8; | |
1994 | wIndex &= 0xff; | |
1995 | if (!wIndex || wIndex > ports) | |
1996 | goto error; | |
1997 | wIndex--; | |
1998 | temp = isp1760_readl(status_reg); | |
1999 | if (temp & PORT_OWNER) | |
2000 | break; | |
2001 | ||
2002 | /* temp &= ~PORT_RWC_BITS; */ | |
2003 | switch (wValue) { | |
2004 | case USB_PORT_FEAT_ENABLE: | |
2005 | isp1760_writel(temp | PORT_PE, status_reg); | |
2006 | break; | |
2007 | ||
2008 | case USB_PORT_FEAT_SUSPEND: | |
2009 | if ((temp & PORT_PE) == 0 | |
2010 | || (temp & PORT_RESET) != 0) | |
2011 | goto error; | |
2012 | ||
2013 | isp1760_writel(temp | PORT_SUSPEND, status_reg); | |
2014 | break; | |
2015 | case USB_PORT_FEAT_POWER: | |
2016 | if (HCS_PPC(priv->hcs_params)) | |
2017 | isp1760_writel(temp | PORT_POWER, | |
2018 | status_reg); | |
2019 | break; | |
2020 | case USB_PORT_FEAT_RESET: | |
2021 | if (temp & PORT_RESUME) | |
2022 | goto error; | |
2023 | /* line status bits may report this as low speed, | |
2024 | * which can be fine if this root hub has a | |
2025 | * transaction translator built in. | |
2026 | */ | |
2027 | if ((temp & (PORT_PE|PORT_CONNECT)) == PORT_CONNECT | |
2028 | && PORT_USB11(temp)) { | |
2029 | temp |= PORT_OWNER; | |
2030 | } else { | |
2031 | temp |= PORT_RESET; | |
2032 | temp &= ~PORT_PE; | |
2033 | ||
2034 | /* | |
2035 | * caller must wait, then call GetPortStatus | |
2036 | * usb 2.0 spec says 50 ms resets on root | |
2037 | */ | |
2038 | priv->reset_done = jiffies + | |
2039 | msecs_to_jiffies(50); | |
2040 | } | |
2041 | isp1760_writel(temp, status_reg); | |
2042 | break; | |
2043 | default: | |
2044 | goto error; | |
2045 | } | |
2046 | isp1760_readl(hcd->regs + HC_USBCMD); | |
2047 | break; | |
2048 | ||
2049 | default: | |
2050 | error: | |
2051 | /* "stall" on error */ | |
2052 | retval = -EPIPE; | |
2053 | } | |
2054 | spin_unlock_irqrestore(&priv->lock, flags); | |
2055 | return retval; | |
2056 | } | |
2057 | ||
2058 | static void isp1760_endpoint_disable(struct usb_hcd *usb_hcd, | |
2059 | struct usb_host_endpoint *ep) | |
2060 | { | |
2061 | struct isp1760_hcd *priv = hcd_to_priv(usb_hcd); | |
2062 | struct isp1760_qh *qh; | |
2063 | struct isp1760_qtd *qtd; | |
2064 | u32 flags; | |
2065 | ||
2066 | spin_lock_irqsave(&priv->lock, flags); | |
2067 | qh = ep->hcpriv; | |
2068 | if (!qh) | |
2069 | goto out; | |
2070 | ||
2071 | ep->hcpriv = NULL; | |
2072 | do { | |
2073 | /* more than entry might get removed */ | |
2074 | if (list_empty(&qh->qtd_list)) | |
2075 | break; | |
2076 | ||
2077 | qtd = list_first_entry(&qh->qtd_list, struct isp1760_qtd, | |
2078 | qtd_list); | |
2079 | ||
2080 | if (qtd->status & URB_ENQUEUED) { | |
2081 | ||
2082 | spin_unlock_irqrestore(&priv->lock, flags); | |
2083 | isp1760_urb_dequeue(usb_hcd, qtd->urb, -ECONNRESET); | |
2084 | spin_lock_irqsave(&priv->lock, flags); | |
2085 | } else { | |
2086 | struct urb *urb; | |
2087 | ||
2088 | urb = qtd->urb; | |
2089 | clean_up_qtdlist(qtd); | |
2090 | isp1760_urb_done(priv, urb, -ECONNRESET); | |
2091 | } | |
2092 | } while (1); | |
2093 | ||
2094 | qh_destroy(qh); | |
2095 | /* remove requests and leak them. | |
2096 | * ATL are pretty fast done, INT could take a while... | |
2097 | * The latter shoule be removed | |
2098 | */ | |
2099 | out: | |
2100 | spin_unlock_irqrestore(&priv->lock, flags); | |
2101 | } | |
2102 | ||
2103 | static int isp1760_get_frame(struct usb_hcd *hcd) | |
2104 | { | |
2105 | struct isp1760_hcd *priv = hcd_to_priv(hcd); | |
2106 | u32 fr; | |
2107 | ||
2108 | fr = isp1760_readl(hcd->regs + HC_FRINDEX); | |
2109 | return (fr >> 3) % priv->periodic_size; | |
2110 | } | |
2111 | ||
2112 | static void isp1760_stop(struct usb_hcd *hcd) | |
2113 | { | |
2114 | struct isp1760_hcd *priv = hcd_to_priv(hcd); | |
2115 | ||
2116 | isp1760_hub_control(hcd, ClearPortFeature, USB_PORT_FEAT_POWER, 1, | |
2117 | NULL, 0); | |
2118 | mdelay(20); | |
2119 | ||
2120 | spin_lock_irq(&priv->lock); | |
2121 | ehci_reset(priv); | |
2122 | /* Disable IRQ */ | |
2123 | isp1760_writel(HW_DATA_BUS_32BIT, hcd->regs + HC_HW_MODE_CTRL); | |
2124 | spin_unlock_irq(&priv->lock); | |
2125 | ||
2126 | isp1760_writel(0, hcd->regs + HC_CONFIGFLAG); | |
2127 | } | |
2128 | ||
2129 | static void isp1760_shutdown(struct usb_hcd *hcd) | |
2130 | { | |
2131 | u32 command; | |
2132 | ||
2133 | isp1760_stop(hcd); | |
2134 | isp1760_writel(HW_DATA_BUS_32BIT, hcd->regs + HC_HW_MODE_CTRL); | |
2135 | ||
2136 | command = isp1760_readl(hcd->regs + HC_USBCMD); | |
2137 | command &= ~CMD_RUN; | |
2138 | isp1760_writel(command, hcd->regs + HC_USBCMD); | |
2139 | } | |
2140 | ||
2141 | static const struct hc_driver isp1760_hc_driver = { | |
2142 | .description = "isp1760-hcd", | |
2143 | .product_desc = "NXP ISP1760 USB Host Controller", | |
2144 | .hcd_priv_size = sizeof(struct isp1760_hcd), | |
2145 | .irq = isp1760_irq, | |
2146 | .flags = HCD_MEMORY | HCD_USB2, | |
2147 | .reset = isp1760_hc_setup, | |
2148 | .start = isp1760_run, | |
2149 | .stop = isp1760_stop, | |
2150 | .shutdown = isp1760_shutdown, | |
2151 | .urb_enqueue = isp1760_urb_enqueue, | |
2152 | .urb_dequeue = isp1760_urb_dequeue, | |
2153 | .endpoint_disable = isp1760_endpoint_disable, | |
2154 | .get_frame_number = isp1760_get_frame, | |
2155 | .hub_status_data = isp1760_hub_status_data, | |
2156 | .hub_control = isp1760_hub_control, | |
2157 | }; | |
2158 | ||
2159 | int __init init_kmem_once(void) | |
2160 | { | |
2161 | qtd_cachep = kmem_cache_create("isp1760_qtd", | |
2162 | sizeof(struct isp1760_qtd), 0, SLAB_TEMPORARY | | |
2163 | SLAB_MEM_SPREAD, NULL); | |
2164 | ||
2165 | if (!qtd_cachep) | |
2166 | return -ENOMEM; | |
2167 | ||
2168 | qh_cachep = kmem_cache_create("isp1760_qh", sizeof(struct isp1760_qh), | |
2169 | 0, SLAB_TEMPORARY | SLAB_MEM_SPREAD, NULL); | |
2170 | ||
2171 | if (!qh_cachep) { | |
2172 | kmem_cache_destroy(qtd_cachep); | |
2173 | return -ENOMEM; | |
2174 | } | |
2175 | ||
2176 | return 0; | |
2177 | } | |
2178 | ||
2179 | void deinit_kmem_cache(void) | |
2180 | { | |
2181 | kmem_cache_destroy(qtd_cachep); | |
2182 | kmem_cache_destroy(qh_cachep); | |
2183 | } | |
2184 | ||
2185 | struct usb_hcd *isp1760_register(u64 res_start, u64 res_len, int irq, | |
2186 | u64 irqflags, struct device *dev, const char *busname) | |
2187 | { | |
2188 | struct usb_hcd *hcd; | |
2189 | struct isp1760_hcd *priv; | |
2190 | int ret; | |
2191 | ||
2192 | if (usb_disabled()) | |
2193 | return ERR_PTR(-ENODEV); | |
2194 | ||
2195 | /* prevent usb-core allocating DMA pages */ | |
2196 | dev->dma_mask = NULL; | |
2197 | ||
2198 | hcd = usb_create_hcd(&isp1760_hc_driver, dev, dev->bus_id); | |
2199 | if (!hcd) | |
2200 | return ERR_PTR(-ENOMEM); | |
2201 | ||
2202 | priv = hcd_to_priv(hcd); | |
2203 | init_memory(priv); | |
2204 | hcd->regs = ioremap(res_start, res_len); | |
2205 | if (!hcd->regs) { | |
2206 | ret = -EIO; | |
2207 | goto err_put; | |
2208 | } | |
2209 | ||
2210 | ret = usb_add_hcd(hcd, irq, irqflags); | |
2211 | if (ret) | |
2212 | goto err_unmap; | |
2213 | ||
2214 | hcd->irq = irq; | |
2215 | hcd->rsrc_start = res_start; | |
2216 | hcd->rsrc_len = res_len; | |
2217 | ||
2218 | return hcd; | |
2219 | ||
2220 | err_unmap: | |
2221 | iounmap(hcd->regs); | |
2222 | ||
2223 | err_put: | |
2224 | usb_put_hcd(hcd); | |
2225 | ||
2226 | return ERR_PTR(ret); | |
2227 | } | |
2228 | ||
2229 | MODULE_DESCRIPTION("Driver for the ISP1760 USB-controller from NXP"); | |
2230 | MODULE_AUTHOR("Sebastian Siewior <bigeasy@linuxtronix.de>"); | |
2231 | MODULE_LICENSE("GPL v2"); |