Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
isp116x.h
Go to the documentation of this file.
1 /*
2  * ISP116x register declarations and HCD data structures
3  *
4  * Copyright (C) 2005 Olav Kongas <[email protected]>
5  * Portions:
6  * Copyright (C) 2004 Lothar Wassmann
7  * Copyright (C) 2004 Psion Teklogix
8  * Copyright (C) 2004 David Brownell
9  */
10 
11 /* us of 1ms frame */
12 #define MAX_LOAD_LIMIT 850
13 
14 /* Full speed: max # of bytes to transfer for a single urb
15  at a time must be < 1024 && must be multiple of 64.
16  832 allows transferring 4kiB within 5 frames. */
17 #define MAX_TRANSFER_SIZE_FULLSPEED 832
18 
19 /* Low speed: there is no reason to schedule in very big
20  chunks; often the requested long transfers are for
21  string descriptors containing short strings. */
22 #define MAX_TRANSFER_SIZE_LOWSPEED 64
23 
24 /* Bytetime (us), a rough indication of how much time it
25  would take to transfer a byte of useful data over USB */
26 #define BYTE_TIME_FULLSPEED 1
27 #define BYTE_TIME_LOWSPEED 20
28 
29 /* Buffer sizes */
30 #define ISP116x_BUF_SIZE 4096
31 #define ISP116x_ITL_BUFSIZE 0
32 #define ISP116x_ATL_BUFSIZE ((ISP116x_BUF_SIZE) - 2*(ISP116x_ITL_BUFSIZE))
33 
34 #define ISP116x_WRITE_OFFSET 0x80
35 
36 /*------------ ISP116x registers/bits ------------*/
37 #define HCREVISION 0x00
38 #define HCCONTROL 0x01
39 #define HCCONTROL_HCFS (3 << 6) /* host controller
40  functional state */
41 #define HCCONTROL_USB_RESET (0 << 6)
42 #define HCCONTROL_USB_RESUME (1 << 6)
43 #define HCCONTROL_USB_OPER (2 << 6)
44 #define HCCONTROL_USB_SUSPEND (3 << 6)
45 #define HCCONTROL_RWC (1 << 9) /* remote wakeup connected */
46 #define HCCONTROL_RWE (1 << 10) /* remote wakeup enable */
47 #define HCCMDSTAT 0x02
48 #define HCCMDSTAT_HCR (1 << 0) /* host controller reset */
49 #define HCCMDSTAT_SOC (3 << 16) /* scheduling overrun count */
50 #define HCINTSTAT 0x03
51 #define HCINT_SO (1 << 0) /* scheduling overrun */
52 #define HCINT_WDH (1 << 1) /* writeback of done_head */
53 #define HCINT_SF (1 << 2) /* start frame */
54 #define HCINT_RD (1 << 3) /* resume detect */
55 #define HCINT_UE (1 << 4) /* unrecoverable error */
56 #define HCINT_FNO (1 << 5) /* frame number overflow */
57 #define HCINT_RHSC (1 << 6) /* root hub status change */
58 #define HCINT_OC (1 << 30) /* ownership change */
59 #define HCINT_MIE (1 << 31) /* master interrupt enable */
60 #define HCINTENB 0x04
61 #define HCINTDIS 0x05
62 #define HCFMINTVL 0x0d
63 #define HCFMREM 0x0e
64 #define HCFMNUM 0x0f
65 #define HCLSTHRESH 0x11
66 #define HCRHDESCA 0x12
67 #define RH_A_NDP (0x3 << 0) /* # downstream ports */
68 #define RH_A_PSM (1 << 8) /* power switching mode */
69 #define RH_A_NPS (1 << 9) /* no power switching */
70 #define RH_A_DT (1 << 10) /* device type (mbz) */
71 #define RH_A_OCPM (1 << 11) /* overcurrent protection
72  mode */
73 #define RH_A_NOCP (1 << 12) /* no overcurrent protection */
74 #define RH_A_POTPGT (0xff << 24) /* power on -> power good
75  time */
76 #define HCRHDESCB 0x13
77 #define RH_B_DR (0xffff << 0) /* device removable flags */
78 #define RH_B_PPCM (0xffff << 16) /* port power control mask */
79 #define HCRHSTATUS 0x14
80 #define RH_HS_LPS (1 << 0) /* local power status */
81 #define RH_HS_OCI (1 << 1) /* over current indicator */
82 #define RH_HS_DRWE (1 << 15) /* device remote wakeup
83  enable */
84 #define RH_HS_LPSC (1 << 16) /* local power status change */
85 #define RH_HS_OCIC (1 << 17) /* over current indicator
86  change */
87 #define RH_HS_CRWE (1 << 31) /* clear remote wakeup
88  enable */
89 #define HCRHPORT1 0x15
90 #define RH_PS_CCS (1 << 0) /* current connect status */
91 #define RH_PS_PES (1 << 1) /* port enable status */
92 #define RH_PS_PSS (1 << 2) /* port suspend status */
93 #define RH_PS_POCI (1 << 3) /* port over current
94  indicator */
95 #define RH_PS_PRS (1 << 4) /* port reset status */
96 #define RH_PS_PPS (1 << 8) /* port power status */
97 #define RH_PS_LSDA (1 << 9) /* low speed device attached */
98 #define RH_PS_CSC (1 << 16) /* connect status change */
99 #define RH_PS_PESC (1 << 17) /* port enable status change */
100 #define RH_PS_PSSC (1 << 18) /* port suspend status
101  change */
102 #define RH_PS_OCIC (1 << 19) /* over current indicator
103  change */
104 #define RH_PS_PRSC (1 << 20) /* port reset status change */
105 #define HCRHPORT_CLRMASK (0x1f << 16)
106 #define HCRHPORT2 0x16
107 #define HCHWCFG 0x20
108 #define HCHWCFG_15KRSEL (1 << 12)
109 #define HCHWCFG_CLKNOTSTOP (1 << 11)
110 #define HCHWCFG_ANALOG_OC (1 << 10)
111 #define HCHWCFG_DACK_MODE (1 << 8)
112 #define HCHWCFG_EOT_POL (1 << 7)
113 #define HCHWCFG_DACK_POL (1 << 6)
114 #define HCHWCFG_DREQ_POL (1 << 5)
115 #define HCHWCFG_DBWIDTH_MASK (0x03 << 3)
116 #define HCHWCFG_DBWIDTH(n) (((n) << 3) & HCHWCFG_DBWIDTH_MASK)
117 #define HCHWCFG_INT_POL (1 << 2)
118 #define HCHWCFG_INT_TRIGGER (1 << 1)
119 #define HCHWCFG_INT_ENABLE (1 << 0)
120 #define HCDMACFG 0x21
121 #define HCDMACFG_BURST_LEN_MASK (0x03 << 5)
122 #define HCDMACFG_BURST_LEN(n) (((n) << 5) & HCDMACFG_BURST_LEN_MASK)
123 #define HCDMACFG_BURST_LEN_1 HCDMACFG_BURST_LEN(0)
124 #define HCDMACFG_BURST_LEN_4 HCDMACFG_BURST_LEN(1)
125 #define HCDMACFG_BURST_LEN_8 HCDMACFG_BURST_LEN(2)
126 #define HCDMACFG_DMA_ENABLE (1 << 4)
127 #define HCDMACFG_BUF_TYPE_MASK (0x07 << 1)
128 #define HCDMACFG_CTR_SEL (1 << 2)
129 #define HCDMACFG_ITLATL_SEL (1 << 1)
130 #define HCDMACFG_DMA_RW_SELECT (1 << 0)
131 #define HCXFERCTR 0x22
132 #define HCuPINT 0x24
133 #define HCuPINT_SOF (1 << 0)
134 #define HCuPINT_ATL (1 << 1)
135 #define HCuPINT_AIIEOT (1 << 2)
136 #define HCuPINT_OPR (1 << 4)
137 #define HCuPINT_SUSP (1 << 5)
138 #define HCuPINT_CLKRDY (1 << 6)
139 #define HCuPINTENB 0x25
140 #define HCCHIPID 0x27
141 #define HCCHIPID_MASK 0xff00
142 #define HCCHIPID_MAGIC 0x6100
143 #define HCSCRATCH 0x28
144 #define HCSWRES 0x29
145 #define HCSWRES_MAGIC 0x00f6
146 #define HCITLBUFLEN 0x2a
147 #define HCATLBUFLEN 0x2b
148 #define HCBUFSTAT 0x2c
149 #define HCBUFSTAT_ITL0_FULL (1 << 0)
150 #define HCBUFSTAT_ITL1_FULL (1 << 1)
151 #define HCBUFSTAT_ATL_FULL (1 << 2)
152 #define HCBUFSTAT_ITL0_DONE (1 << 3)
153 #define HCBUFSTAT_ITL1_DONE (1 << 4)
154 #define HCBUFSTAT_ATL_DONE (1 << 5)
155 #define HCRDITL0LEN 0x2d
156 #define HCRDITL1LEN 0x2e
157 #define HCITLPORT 0x40
158 #define HCATLPORT 0x41
159 
160 /* Philips transfer descriptor */
161 struct ptd {
162  u16 count;
163 #define PTD_COUNT_MSK (0x3ff << 0)
164 #define PTD_TOGGLE_MSK (1 << 10)
165 #define PTD_ACTIVE_MSK (1 << 11)
166 #define PTD_CC_MSK (0xf << 12)
167  u16 mps;
168 #define PTD_MPS_MSK (0x3ff << 0)
169 #define PTD_SPD_MSK (1 << 10)
170 #define PTD_LAST_MSK (1 << 11)
171 #define PTD_EP_MSK (0xf << 12)
172  u16 len;
173 #define PTD_LEN_MSK (0x3ff << 0)
174 #define PTD_DIR_MSK (3 << 10)
175 #define PTD_DIR_SETUP (0)
176 #define PTD_DIR_OUT (1)
177 #define PTD_DIR_IN (2)
178 #define PTD_B5_5_MSK (1 << 13)
179  u16 faddr;
180 #define PTD_FA_MSK (0x7f << 0)
181 #define PTD_FMT_MSK (1 << 7)
182 } __attribute__ ((packed, aligned(2)));
183 
184 /* PTD accessor macros. */
185 #define PTD_GET_COUNT(p) (((p)->count & PTD_COUNT_MSK) >> 0)
186 #define PTD_COUNT(v) (((v) << 0) & PTD_COUNT_MSK)
187 #define PTD_GET_TOGGLE(p) (((p)->count & PTD_TOGGLE_MSK) >> 10)
188 #define PTD_TOGGLE(v) (((v) << 10) & PTD_TOGGLE_MSK)
189 #define PTD_GET_ACTIVE(p) (((p)->count & PTD_ACTIVE_MSK) >> 11)
190 #define PTD_ACTIVE(v) (((v) << 11) & PTD_ACTIVE_MSK)
191 #define PTD_GET_CC(p) (((p)->count & PTD_CC_MSK) >> 12)
192 #define PTD_CC(v) (((v) << 12) & PTD_CC_MSK)
193 #define PTD_GET_MPS(p) (((p)->mps & PTD_MPS_MSK) >> 0)
194 #define PTD_MPS(v) (((v) << 0) & PTD_MPS_MSK)
195 #define PTD_GET_SPD(p) (((p)->mps & PTD_SPD_MSK) >> 10)
196 #define PTD_SPD(v) (((v) << 10) & PTD_SPD_MSK)
197 #define PTD_GET_LAST(p) (((p)->mps & PTD_LAST_MSK) >> 11)
198 #define PTD_LAST(v) (((v) << 11) & PTD_LAST_MSK)
199 #define PTD_GET_EP(p) (((p)->mps & PTD_EP_MSK) >> 12)
200 #define PTD_EP(v) (((v) << 12) & PTD_EP_MSK)
201 #define PTD_GET_LEN(p) (((p)->len & PTD_LEN_MSK) >> 0)
202 #define PTD_LEN(v) (((v) << 0) & PTD_LEN_MSK)
203 #define PTD_GET_DIR(p) (((p)->len & PTD_DIR_MSK) >> 10)
204 #define PTD_DIR(v) (((v) << 10) & PTD_DIR_MSK)
205 #define PTD_GET_B5_5(p) (((p)->len & PTD_B5_5_MSK) >> 13)
206 #define PTD_B5_5(v) (((v) << 13) & PTD_B5_5_MSK)
207 #define PTD_GET_FA(p) (((p)->faddr & PTD_FA_MSK) >> 0)
208 #define PTD_FA(v) (((v) << 0) & PTD_FA_MSK)
209 #define PTD_GET_FMT(p) (((p)->faddr & PTD_FMT_MSK) >> 7)
210 #define PTD_FMT(v) (((v) << 7) & PTD_FMT_MSK)
211 
212 /* Hardware transfer status codes -- CC from ptd->count */
213 #define TD_CC_NOERROR 0x00
214 #define TD_CC_CRC 0x01
215 #define TD_CC_BITSTUFFING 0x02
216 #define TD_CC_DATATOGGLEM 0x03
217 #define TD_CC_STALL 0x04
218 #define TD_DEVNOTRESP 0x05
219 #define TD_PIDCHECKFAIL 0x06
220 #define TD_UNEXPECTEDPID 0x07
221 #define TD_DATAOVERRUN 0x08
222 #define TD_DATAUNDERRUN 0x09
223  /* 0x0A, 0x0B reserved for hardware */
224 #define TD_BUFFEROVERRUN 0x0C
225 #define TD_BUFFERUNDERRUN 0x0D
226  /* 0x0E, 0x0F reserved for HCD */
227 #define TD_NOTACCESSED 0x0F
228 
229 /* map PTD status codes (CC) to errno values */
230 static const int cc_to_error[16] = {
231  /* No Error */ 0,
232  /* CRC Error */ -EILSEQ,
233  /* Bit Stuff */ -EPROTO,
234  /* Data Togg */ -EILSEQ,
235  /* Stall */ -EPIPE,
236  /* DevNotResp */ -ETIME,
237  /* PIDCheck */ -EPROTO,
238  /* UnExpPID */ -EPROTO,
239  /* DataOver */ -EOVERFLOW,
240  /* DataUnder */ -EREMOTEIO,
241  /* (for hw) */ -EIO,
242  /* (for hw) */ -EIO,
243  /* BufferOver */ -ECOMM,
244  /* BuffUnder */ -ENOSR,
245  /* (for HCD) */ -EALREADY,
246  /* (for HCD) */ -EALREADY
247 };
248 
249 /*--------------------------------------------------------------*/
250 
251 #define LOG2_PERIODIC_SIZE 5 /* arbitrary; this matches OHCI */
252 #define PERIODIC_SIZE (1 << LOG2_PERIODIC_SIZE)
253 
254 struct isp116x {
255  spinlock_t lock;
256 
257  void __iomem *addr_reg;
258  void __iomem *data_reg;
259 
260  struct isp116x_platform_data *board;
261 
262  struct dentry *dentry;
263  unsigned long stat1, stat2, stat4, stat8, stat16;
264 
265  /* HC registers */
266  u32 intenb; /* "OHCI" interrupts */
267  u16 irqenb; /* uP interrupts */
268 
269  /* Root hub registers */
270  u32 rhdesca;
271  u32 rhdescb;
272  u32 rhstatus;
273 
274  /* async schedule: control, bulk */
275  struct list_head async;
276 
277  /* periodic schedule: int */
278  u16 load[PERIODIC_SIZE];
279  struct isp116x_ep *periodic[PERIODIC_SIZE];
280  unsigned periodic_count;
281  u16 fmindex;
282 
283  /* Schedule for the current frame */
284  struct isp116x_ep *atl_active;
285  int atl_buflen;
286  int atl_bufshrt;
287  int atl_last_dir;
288  atomic_t atl_finishing;
289 };
290 
291 static inline struct isp116x *hcd_to_isp116x(struct usb_hcd *hcd)
292 {
293  return (struct isp116x *)(hcd->hcd_priv);
294 }
295 
296 static inline struct usb_hcd *isp116x_to_hcd(struct isp116x *isp116x)
297 {
298  return container_of((void *)isp116x, struct usb_hcd, hcd_priv);
299 }
300 
301 struct isp116x_ep {
302  struct usb_host_endpoint *hep;
303  struct usb_device *udev;
304  struct ptd ptd;
305 
306  u8 maxpacket;
307  u8 epnum;
308  u8 nextpid;
309  u16 error_count;
310  u16 length; /* of current packet */
311  unsigned char *data; /* to databuf */
312  /* queue of active EP's (the ones scheduled for the
313  current frame) */
314  struct isp116x_ep *active;
315 
316  /* periodic schedule */
317  u16 period;
318  u16 branch;
319  u16 load;
320  struct isp116x_ep *next;
321 
322  /* async schedule */
323  struct list_head schedule;
324 };
325 
326 /*-------------------------------------------------------------------------*/
327 
328 #ifdef DEBUG
329 #define DBG(stuff...) printk(KERN_DEBUG "116x: " stuff)
330 #else
331 #define DBG(stuff...) do{}while(0)
332 #endif
333 
334 #ifdef VERBOSE
335 # define VDBG DBG
336 #else
337 # define VDBG(stuff...) do{}while(0)
338 #endif
339 
340 #define ERR(stuff...) printk(KERN_ERR "116x: " stuff)
341 #define WARNING(stuff...) printk(KERN_WARNING "116x: " stuff)
342 #define INFO(stuff...) printk(KERN_INFO "116x: " stuff)
343 
344 /* ------------------------------------------------- */
345 
346 #if defined(USE_PLATFORM_DELAY)
347 #if defined(USE_NDELAY)
348 #error USE_PLATFORM_DELAY and USE_NDELAY simultaneously defined.
349 #endif
350 #define isp116x_delay(h,d) (h)->board->delay( \
351  isp116x_to_hcd(h)->self.controller,d)
352 #define isp116x_check_platform_delay(h) ((h)->board->delay == NULL)
353 #elif defined(USE_NDELAY)
354 #define isp116x_delay(h,d) ndelay(d)
355 #define isp116x_check_platform_delay(h) 0
356 #else
357 #define isp116x_delay(h,d) do{}while(0)
358 #define isp116x_check_platform_delay(h) 0
359 #endif
360 
361 #if defined(DEBUG)
362 #define IRQ_TEST() BUG_ON(!irqs_disabled())
363 #else
364 #define IRQ_TEST() do{}while(0)
365 #endif
366 
367 static inline void isp116x_write_addr(struct isp116x *isp116x, unsigned reg)
368 {
369  IRQ_TEST();
370  writew(reg & 0xff, isp116x->addr_reg);
371  isp116x_delay(isp116x, 300);
372 }
373 
374 static inline void isp116x_write_data16(struct isp116x *isp116x, u16 val)
375 {
376  writew(val, isp116x->data_reg);
377  isp116x_delay(isp116x, 150);
378 }
379 
380 static inline void isp116x_raw_write_data16(struct isp116x *isp116x, u16 val)
381 {
382  __raw_writew(val, isp116x->data_reg);
383  isp116x_delay(isp116x, 150);
384 }
385 
386 static inline u16 isp116x_read_data16(struct isp116x *isp116x)
387 {
388  u16 val;
389 
390  val = readw(isp116x->data_reg);
391  isp116x_delay(isp116x, 150);
392  return val;
393 }
394 
395 static inline u16 isp116x_raw_read_data16(struct isp116x *isp116x)
396 {
397  u16 val;
398 
399  val = __raw_readw(isp116x->data_reg);
400  isp116x_delay(isp116x, 150);
401  return val;
402 }
403 
404 static inline void isp116x_write_data32(struct isp116x *isp116x, u32 val)
405 {
406  writew(val & 0xffff, isp116x->data_reg);
407  isp116x_delay(isp116x, 150);
408  writew(val >> 16, isp116x->data_reg);
409  isp116x_delay(isp116x, 150);
410 }
411 
412 static inline u32 isp116x_read_data32(struct isp116x *isp116x)
413 {
414  u32 val;
415 
416  val = (u32) readw(isp116x->data_reg);
417  isp116x_delay(isp116x, 150);
418  val |= ((u32) readw(isp116x->data_reg)) << 16;
419  isp116x_delay(isp116x, 150);
420  return val;
421 }
422 
423 /* Let's keep register access functions out of line. Hint:
424  we wait at least 150 ns at every access.
425 */
426 static u16 isp116x_read_reg16(struct isp116x *isp116x, unsigned reg)
427 {
428  isp116x_write_addr(isp116x, reg);
429  return isp116x_read_data16(isp116x);
430 }
431 
432 static u32 isp116x_read_reg32(struct isp116x *isp116x, unsigned reg)
433 {
434  isp116x_write_addr(isp116x, reg);
435  return isp116x_read_data32(isp116x);
436 }
437 
438 static void isp116x_write_reg16(struct isp116x *isp116x, unsigned reg,
439  unsigned val)
440 {
441  isp116x_write_addr(isp116x, reg | ISP116x_WRITE_OFFSET);
442  isp116x_write_data16(isp116x, (u16) (val & 0xffff));
443 }
444 
445 static void isp116x_write_reg32(struct isp116x *isp116x, unsigned reg,
446  unsigned val)
447 {
448  isp116x_write_addr(isp116x, reg | ISP116x_WRITE_OFFSET);
449  isp116x_write_data32(isp116x, (u32) val);
450 }
451 
452 #define isp116x_show_reg_log(d,r,s) { \
453  if ((r) < 0x20) { \
454  DBG("%-12s[%02x]: %08x\n", #r, \
455  r, isp116x_read_reg32(d, r)); \
456  } else { \
457  DBG("%-12s[%02x]: %04x\n", #r, \
458  r, isp116x_read_reg16(d, r)); \
459  } \
460 }
461 #define isp116x_show_reg_seq(d,r,s) { \
462  if ((r) < 0x20) { \
463  seq_printf(s, "%-12s[%02x]: %08x\n", #r, \
464  r, isp116x_read_reg32(d, r)); \
465  } else { \
466  seq_printf(s, "%-12s[%02x]: %04x\n", #r, \
467  r, isp116x_read_reg16(d, r)); \
468  } \
469 }
470 
471 #define isp116x_show_regs(d,type,s) { \
472  isp116x_show_reg_##type(d, HCREVISION, s); \
473  isp116x_show_reg_##type(d, HCCONTROL, s); \
474  isp116x_show_reg_##type(d, HCCMDSTAT, s); \
475  isp116x_show_reg_##type(d, HCINTSTAT, s); \
476  isp116x_show_reg_##type(d, HCINTENB, s); \
477  isp116x_show_reg_##type(d, HCFMINTVL, s); \
478  isp116x_show_reg_##type(d, HCFMREM, s); \
479  isp116x_show_reg_##type(d, HCFMNUM, s); \
480  isp116x_show_reg_##type(d, HCLSTHRESH, s); \
481  isp116x_show_reg_##type(d, HCRHDESCA, s); \
482  isp116x_show_reg_##type(d, HCRHDESCB, s); \
483  isp116x_show_reg_##type(d, HCRHSTATUS, s); \
484  isp116x_show_reg_##type(d, HCRHPORT1, s); \
485  isp116x_show_reg_##type(d, HCRHPORT2, s); \
486  isp116x_show_reg_##type(d, HCHWCFG, s); \
487  isp116x_show_reg_##type(d, HCDMACFG, s); \
488  isp116x_show_reg_##type(d, HCXFERCTR, s); \
489  isp116x_show_reg_##type(d, HCuPINT, s); \
490  isp116x_show_reg_##type(d, HCuPINTENB, s); \
491  isp116x_show_reg_##type(d, HCCHIPID, s); \
492  isp116x_show_reg_##type(d, HCSCRATCH, s); \
493  isp116x_show_reg_##type(d, HCITLBUFLEN, s); \
494  isp116x_show_reg_##type(d, HCATLBUFLEN, s); \
495  isp116x_show_reg_##type(d, HCBUFSTAT, s); \
496  isp116x_show_reg_##type(d, HCRDITL0LEN, s); \
497  isp116x_show_reg_##type(d, HCRDITL1LEN, s); \
498 }
499 
500 /*
501  Dump registers for debugfs.
502 */
503 static inline void isp116x_show_regs_seq(struct isp116x *isp116x,
504  struct seq_file *s)
505 {
506  isp116x_show_regs(isp116x, seq, s);
507 }
508 
509 /*
510  Dump registers to syslog.
511 */
512 static inline void isp116x_show_regs_log(struct isp116x *isp116x)
513 {
514  isp116x_show_regs(isp116x, log, NULL);
515 }
516 
517 #if defined(URB_TRACE)
518 
519 #define PIPETYPE(pipe) ({ char *__s; \
520  if (usb_pipecontrol(pipe)) __s = "ctrl"; \
521  else if (usb_pipeint(pipe)) __s = "int"; \
522  else if (usb_pipebulk(pipe)) __s = "bulk"; \
523  else __s = "iso"; \
524  __s;})
525 #define PIPEDIR(pipe) ({ usb_pipein(pipe) ? "in" : "out"; })
526 #define URB_NOTSHORT(urb) ({ (urb)->transfer_flags & URB_SHORT_NOT_OK ? \
527  "short_not_ok" : ""; })
528 
529 /* print debug info about the URB */
530 static void urb_dbg(struct urb *urb, char *msg)
531 {
532  unsigned int pipe;
533 
534  if (!urb) {
535  DBG("%s: zero urb\n", msg);
536  return;
537  }
538  pipe = urb->pipe;
539  DBG("%s: FA %d ep%d%s %s: len %d/%d %s\n", msg,
540  usb_pipedevice(pipe), usb_pipeendpoint(pipe),
541  PIPEDIR(pipe), PIPETYPE(pipe),
542  urb->transfer_buffer_length, urb->actual_length, URB_NOTSHORT(urb));
543 }
544 
545 #else
546 
547 #define urb_dbg(urb,msg) do{}while(0)
548 
549 #endif /* ! defined(URB_TRACE) */
550 
551 #if defined(PTD_TRACE)
552 
553 #define PTD_DIR_STR(ptd) ({char __c; \
554  switch(PTD_GET_DIR(ptd)){ \
555  case 0: __c = 's'; break; \
556  case 1: __c = 'o'; break; \
557  default: __c = 'i'; break; \
558  }; __c;})
559 
560 /*
561  Dump PTD info. The code documents the format
562  perfectly, right :)
563 */
564 static inline void dump_ptd(struct ptd *ptd)
565 {
566  printk(KERN_WARNING "td: %x %d%c%d %d,%d,%d %x %x%x%x\n",
567  PTD_GET_CC(ptd), PTD_GET_FA(ptd),
568  PTD_DIR_STR(ptd), PTD_GET_EP(ptd),
569  PTD_GET_COUNT(ptd), PTD_GET_LEN(ptd), PTD_GET_MPS(ptd),
570  PTD_GET_TOGGLE(ptd), PTD_GET_ACTIVE(ptd),
571  PTD_GET_SPD(ptd), PTD_GET_LAST(ptd));
572 }
573 
574 static inline void dump_ptd_out_data(struct ptd *ptd, u8 * buf)
575 {
576  int k;
577 
578  if (PTD_GET_DIR(ptd) != PTD_DIR_IN && PTD_GET_LEN(ptd)) {
579  printk(KERN_WARNING "-> ");
580  for (k = 0; k < PTD_GET_LEN(ptd); ++k)
581  printk("%02x ", ((u8 *) buf)[k]);
582  printk("\n");
583  }
584 }
585 
586 static inline void dump_ptd_in_data(struct ptd *ptd, u8 * buf)
587 {
588  int k;
589 
590  if (PTD_GET_DIR(ptd) == PTD_DIR_IN && PTD_GET_COUNT(ptd)) {
591  printk(KERN_WARNING "<- ");
592  for (k = 0; k < PTD_GET_COUNT(ptd); ++k)
593  printk("%02x ", ((u8 *) buf)[k]);
594  printk("\n");
595  }
596  if (PTD_GET_LAST(ptd))
597  printk(KERN_WARNING "-\n");
598 }
599 
600 #else
601 
602 #define dump_ptd(ptd) do{}while(0)
603 #define dump_ptd_in_data(ptd,buf) do{}while(0)
604 #define dump_ptd_out_data(ptd,buf) do{}while(0)
605 
606 #endif /* ! defined(PTD_TRACE) */
Generated on Thu Jan 10 2013 14:37:00 for Linux Kernel by   doxygen 1.8.2