59810add3d72433aefec940910eaccb1422ac3f6
[dragonfly.git] / sys / bus / firewire / fwohci.c
1 /*
2  * Copyright (c) 2003 Hidetoshi Shimokawa
3  * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. All advertising materials mentioning features or use of this software
15  *    must display the acknowledgement as bellow:
16  *
17  *    This product includes software developed by K. Kobayashi and H. Shimokawa
18  *
19  * 4. The name of the author may not be used to endorse or promote products
20  *    derived from this software without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
25  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
26  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
27  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
28  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
30  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
31  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32  * POSSIBILITY OF SUCH DAMAGE.
33  * 
34  * $FreeBSD: src/sys/dev/firewire/fwohci.c,v 1.72 2004/01/22 14:41:17 simokawa Exp $
35  * $FreeBSD: src/sys/dev/firewire/fwohci.c,v 1.1.2.19 2003/05/01 06:24:37 simokawa Exp $
36  * $DragonFly: src/sys/bus/firewire/fwohci.c,v 1.19 2008/07/18 03:51:28 dillon Exp $
37  */
38
39 #define ATRQ_CH 0
40 #define ATRS_CH 1
41 #define ARRQ_CH 2
42 #define ARRS_CH 3
43 #define ITX_CH 4
44 #define IRX_CH 0x24
45
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/mbuf.h>
49 #include <sys/malloc.h>
50 #include <sys/sockio.h>
51 #include <sys/bus.h>
52 #include <sys/kernel.h>
53 #include <sys/conf.h>
54 #include <sys/device.h>
55 #include <sys/endian.h>
56
57 #include <sys/thread2.h>
58
59 #if defined(__DragonFly__) || __FreeBSD_version < 500000
60 #include <machine/clock.h>              /* for DELAY() */
61 #endif
62
63 #ifdef __DragonFly__
64 #include "firewire.h"
65 #include "firewirereg.h"
66 #include "fwdma.h"
67 #include "fwohcireg.h"
68 #include "fwohcivar.h"
69 #include "firewire_phy.h"
70 #else
71 #include <dev/firewire/firewire.h>
72 #include <dev/firewire/firewirereg.h>
73 #include <dev/firewire/fwdma.h>
74 #include <dev/firewire/fwohcireg.h>
75 #include <dev/firewire/fwohcivar.h>
76 #include <dev/firewire/firewire_phy.h>
77 #endif
78
79 #undef OHCI_DEBUG
80
81 static char dbcode[16][0x10]={"OUTM", "OUTL","INPM","INPL",
82                 "STOR","LOAD","NOP ","STOP",};
83
84 static char dbkey[8][0x10]={"ST0", "ST1","ST2","ST3",
85                 "UNDEF","REG","SYS","DEV"};
86 static char dbcond[4][0x10]={"NEV","C=1", "C=0", "ALL"};
87 char fwohcicode[32][0x20]={
88         "No stat","Undef","long","miss Ack err",
89         "underrun","overrun","desc err", "data read err",
90         "data write err","bus reset","timeout","tcode err",
91         "Undef","Undef","unknown event","flushed",
92         "Undef","ack complete","ack pend","Undef",
93         "ack busy_X","ack busy_A","ack busy_B","Undef",
94         "Undef","Undef","Undef","ack tardy",
95         "Undef","ack data_err","ack type_err",""};
96
97 #define MAX_SPEED 3
98 extern char *linkspeed[];
99 u_int32_t tagbit[4] = { 1 << 28, 1 << 29, 1 << 30, 1 << 31};
100
101 static struct tcode_info tinfo[] = {
102 /*              hdr_len block   flag*/
103 /* 0 WREQQ  */ {16,     FWTI_REQ | FWTI_TLABEL},
104 /* 1 WREQB  */ {16,     FWTI_REQ | FWTI_TLABEL | FWTI_BLOCK_ASY},
105 /* 2 WRES   */ {12,     FWTI_RES},
106 /* 3 XXX    */ { 0,     0},
107 /* 4 RREQQ  */ {12,     FWTI_REQ | FWTI_TLABEL},
108 /* 5 RREQB  */ {16,     FWTI_REQ | FWTI_TLABEL},
109 /* 6 RRESQ  */ {16,     FWTI_RES},
110 /* 7 RRESB  */ {16,     FWTI_RES | FWTI_BLOCK_ASY},
111 /* 8 CYCS   */ { 0,     0},
112 /* 9 LREQ   */ {16,     FWTI_REQ | FWTI_TLABEL | FWTI_BLOCK_ASY},
113 /* a STREAM */ { 4,     FWTI_REQ | FWTI_BLOCK_STR},
114 /* b LRES   */ {16,     FWTI_RES | FWTI_BLOCK_ASY},
115 /* c XXX    */ { 0,     0},
116 /* d XXX    */ { 0,     0},
117 /* e PHY    */ {12,     FWTI_REQ},
118 /* f XXX    */ { 0,     0}
119 };
120
121 #define OHCI_WRITE_SIGMASK 0xffff0000
122 #define OHCI_READ_SIGMASK 0xffff0000
123
124 #define OWRITE(sc, r, x) bus_space_write_4((sc)->bst, (sc)->bsh, (r), (x))
125 #define OREAD(sc, r) bus_space_read_4((sc)->bst, (sc)->bsh, (r))
126
127 static void fwohci_ibr (struct firewire_comm *);
128 static void fwohci_db_init (struct fwohci_softc *, struct fwohci_dbch *);
129 static void fwohci_db_free (struct fwohci_dbch *);
130 static void fwohci_arcv (struct fwohci_softc *, struct fwohci_dbch *, int);
131 static void fwohci_txd (struct fwohci_softc *, struct fwohci_dbch *);
132 static void fwohci_start_atq (struct firewire_comm *);
133 static void fwohci_start_ats (struct firewire_comm *);
134 static void fwohci_start (struct fwohci_softc *, struct fwohci_dbch *);
135 static u_int32_t fwphy_wrdata ( struct fwohci_softc *, u_int32_t, u_int32_t);
136 static u_int32_t fwphy_rddata ( struct fwohci_softc *, u_int32_t);
137 static int fwohci_rx_enable (struct fwohci_softc *, struct fwohci_dbch *);
138 static int fwohci_tx_enable (struct fwohci_softc *, struct fwohci_dbch *);
139 static int fwohci_irx_enable (struct firewire_comm *, int);
140 static int fwohci_irx_disable (struct firewire_comm *, int);
141 #if BYTE_ORDER == BIG_ENDIAN
142 static void fwohci_irx_post (struct firewire_comm *, u_int32_t *);
143 #endif
144 static int fwohci_itxbuf_enable (struct firewire_comm *, int);
145 static int fwohci_itx_disable (struct firewire_comm *, int);
146 static void fwohci_timeout (void *);
147 static void fwohci_set_intr (struct firewire_comm *, int);
148
149 static int fwohci_add_rx_buf (struct fwohci_dbch *, struct fwohcidb_tr *, int, struct fwdma_alloc *);
150 static int fwohci_add_tx_buf (struct fwohci_dbch *, struct fwohcidb_tr *, int);
151 static void     dump_db (struct fwohci_softc *, u_int32_t);
152 static void     print_db (struct fwohcidb_tr *, struct fwohcidb *, u_int32_t , u_int32_t);
153 static void     dump_dma (struct fwohci_softc *, u_int32_t);
154 static u_int32_t fwohci_cyctimer (struct firewire_comm *);
155 static void fwohci_rbuf_update (struct fwohci_softc *, int);
156 static void fwohci_tbuf_update (struct fwohci_softc *, int);
157 void fwohci_txbufdb (struct fwohci_softc *, int , struct fw_bulkxfer *);
158 #if FWOHCI_TASKQUEUE
159 static void fwohci_complete(void *, int);
160 #endif
161
162 /*
163  * memory allocated for DMA programs
164  */
165 #define DMA_PROG_ALLOC          (8 * PAGE_SIZE)
166
167 #define NDB FWMAXQUEUE
168
169 #define OHCI_VERSION            0x00
170 #define OHCI_ATRETRY            0x08
171 #define OHCI_CROMHDR            0x18
172 #define OHCI_BUS_OPT            0x20
173 #define OHCI_BUSIRMC            (1 << 31)
174 #define OHCI_BUSCMC             (1 << 30)
175 #define OHCI_BUSISC             (1 << 29)
176 #define OHCI_BUSBMC             (1 << 28)
177 #define OHCI_BUSPMC             (1 << 27)
178 #define OHCI_BUSFNC             OHCI_BUSIRMC | OHCI_BUSCMC | OHCI_BUSISC |\
179                                 OHCI_BUSBMC | OHCI_BUSPMC
180
181 #define OHCI_EUID_HI            0x24
182 #define OHCI_EUID_LO            0x28
183
184 #define OHCI_CROMPTR            0x34
185 #define OHCI_HCCCTL             0x50
186 #define OHCI_HCCCTLCLR          0x54
187 #define OHCI_AREQHI             0x100
188 #define OHCI_AREQHICLR          0x104
189 #define OHCI_AREQLO             0x108
190 #define OHCI_AREQLOCLR          0x10c
191 #define OHCI_PREQHI             0x110
192 #define OHCI_PREQHICLR          0x114
193 #define OHCI_PREQLO             0x118
194 #define OHCI_PREQLOCLR          0x11c
195 #define OHCI_PREQUPPER          0x120
196
197 #define OHCI_SID_BUF            0x64
198 #define OHCI_SID_CNT            0x68
199 #define OHCI_SID_ERR            (1 << 31)
200 #define OHCI_SID_CNT_MASK       0xffc
201
202 #define OHCI_IT_STAT            0x90
203 #define OHCI_IT_STATCLR         0x94
204 #define OHCI_IT_MASK            0x98
205 #define OHCI_IT_MASKCLR         0x9c
206
207 #define OHCI_IR_STAT            0xa0
208 #define OHCI_IR_STATCLR         0xa4
209 #define OHCI_IR_MASK            0xa8
210 #define OHCI_IR_MASKCLR         0xac
211
212 #define OHCI_LNKCTL             0xe0
213 #define OHCI_LNKCTLCLR          0xe4
214
215 #define OHCI_PHYACCESS          0xec
216 #define OHCI_CYCLETIMER         0xf0
217
218 #define OHCI_DMACTL(off)        (off)
219 #define OHCI_DMACTLCLR(off)     (off + 4)
220 #define OHCI_DMACMD(off)        (off + 0xc)
221 #define OHCI_DMAMATCH(off)      (off + 0x10)
222
223 #define OHCI_ATQOFF             0x180
224 #define OHCI_ATQCTL             OHCI_ATQOFF
225 #define OHCI_ATQCTLCLR          (OHCI_ATQOFF + 4)
226 #define OHCI_ATQCMD             (OHCI_ATQOFF + 0xc)
227 #define OHCI_ATQMATCH           (OHCI_ATQOFF + 0x10)
228
229 #define OHCI_ATSOFF             0x1a0
230 #define OHCI_ATSCTL             OHCI_ATSOFF
231 #define OHCI_ATSCTLCLR          (OHCI_ATSOFF + 4)
232 #define OHCI_ATSCMD             (OHCI_ATSOFF + 0xc)
233 #define OHCI_ATSMATCH           (OHCI_ATSOFF + 0x10)
234
235 #define OHCI_ARQOFF             0x1c0
236 #define OHCI_ARQCTL             OHCI_ARQOFF
237 #define OHCI_ARQCTLCLR          (OHCI_ARQOFF + 4)
238 #define OHCI_ARQCMD             (OHCI_ARQOFF + 0xc)
239 #define OHCI_ARQMATCH           (OHCI_ARQOFF + 0x10)
240
241 #define OHCI_ARSOFF             0x1e0
242 #define OHCI_ARSCTL             OHCI_ARSOFF
243 #define OHCI_ARSCTLCLR          (OHCI_ARSOFF + 4)
244 #define OHCI_ARSCMD             (OHCI_ARSOFF + 0xc)
245 #define OHCI_ARSMATCH           (OHCI_ARSOFF + 0x10)
246
247 #define OHCI_ITOFF(CH)          (0x200 + 0x10 * (CH))
248 #define OHCI_ITCTL(CH)          (OHCI_ITOFF(CH))
249 #define OHCI_ITCTLCLR(CH)       (OHCI_ITOFF(CH) + 4)
250 #define OHCI_ITCMD(CH)          (OHCI_ITOFF(CH) + 0xc)
251
252 #define OHCI_IROFF(CH)          (0x400 + 0x20 * (CH))
253 #define OHCI_IRCTL(CH)          (OHCI_IROFF(CH))
254 #define OHCI_IRCTLCLR(CH)       (OHCI_IROFF(CH) + 4)
255 #define OHCI_IRCMD(CH)          (OHCI_IROFF(CH) + 0xc)
256 #define OHCI_IRMATCH(CH)        (OHCI_IROFF(CH) + 0x10)
257
258 d_ioctl_t fwohci_ioctl;
259
260 /*
261  * Communication with PHY device
262  */
263 static u_int32_t
264 fwphy_wrdata( struct fwohci_softc *sc, u_int32_t addr, u_int32_t data)
265 {
266         u_int32_t fun;
267
268         addr &= 0xf;
269         data &= 0xff;
270
271         fun = (PHYDEV_WRCMD | (addr << PHYDEV_REGADDR) | (data << PHYDEV_WRDATA));
272         OWRITE(sc, OHCI_PHYACCESS, fun);
273         DELAY(100);
274
275         return(fwphy_rddata( sc, addr));
276 }
277
278 static u_int32_t
279 fwohci_set_bus_manager(struct firewire_comm *fc, u_int node)
280 {
281         struct fwohci_softc *sc = (struct fwohci_softc *)fc;
282         int i;
283         u_int32_t bm;
284
285 #define OHCI_CSR_DATA   0x0c
286 #define OHCI_CSR_COMP   0x10
287 #define OHCI_CSR_CONT   0x14
288 #define OHCI_BUS_MANAGER_ID     0
289
290         OWRITE(sc, OHCI_CSR_DATA, node);
291         OWRITE(sc, OHCI_CSR_COMP, 0x3f);
292         OWRITE(sc, OHCI_CSR_CONT, OHCI_BUS_MANAGER_ID);
293         for (i = 0; !(OREAD(sc, OHCI_CSR_CONT) & (1<<31)) && (i < 1000); i++)
294                 DELAY(10);
295         bm = OREAD(sc, OHCI_CSR_DATA);
296         if((bm & 0x3f) == 0x3f)
297                 bm = node;
298         if (bootverbose)
299                 device_printf(sc->fc.dev,
300                         "fw_set_bus_manager: %d->%d (loop=%d)\n", bm, node, i);
301
302         return(bm);
303 }
304
305 static u_int32_t
306 fwphy_rddata(struct fwohci_softc *sc,  u_int addr)
307 {
308         u_int32_t fun, stat;
309         u_int i, retry = 0;
310
311         addr &= 0xf;
312 #define MAX_RETRY 100
313 again:
314         OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_REG_FAIL);
315         fun = PHYDEV_RDCMD | (addr << PHYDEV_REGADDR);
316         OWRITE(sc, OHCI_PHYACCESS, fun);
317         for ( i = 0 ; i < MAX_RETRY ; i ++ ){
318                 fun = OREAD(sc, OHCI_PHYACCESS);
319                 if ((fun & PHYDEV_RDCMD) == 0 && (fun & PHYDEV_RDDONE) != 0)
320                         break;
321                 DELAY(100);
322         }
323         if(i >= MAX_RETRY) {
324                 if (bootverbose)
325                         device_printf(sc->fc.dev, "phy read failed(1).\n");
326                 if (++retry < MAX_RETRY) {
327                         DELAY(100);
328                         goto again;
329                 }
330         }
331         /* Make sure that SCLK is started */
332         stat = OREAD(sc, FWOHCI_INTSTAT);
333         if ((stat & OHCI_INT_REG_FAIL) != 0 ||
334                         ((fun >> PHYDEV_REGADDR) & 0xf) != addr) {
335                 if (bootverbose)
336                         device_printf(sc->fc.dev, "phy read failed(2).\n");
337                 if (++retry < MAX_RETRY) {
338                         DELAY(100);
339                         goto again;
340                 }
341         }
342         if (bootverbose || retry >= MAX_RETRY)
343                 device_printf(sc->fc.dev, 
344                     "fwphy_rddata: 0x%x loop=%d, retry=%d\n", addr, i, retry);
345 #undef MAX_RETRY
346         return((fun >> PHYDEV_RDDATA )& 0xff);
347 }
348 /* Device specific ioctl. */
349 int
350 fwohci_ioctl (struct dev_ioctl_args *ap)
351 {
352         cdev_t dev = ap->a_head.a_dev;
353         struct firewire_softc *sc;
354         struct fwohci_softc *fc;
355         int unit = DEV2UNIT(dev);
356         int err = 0;
357         struct fw_reg_req_t *reg  = (struct fw_reg_req_t *) ap->a_data;
358         u_int32_t *dmach = (u_int32_t *) ap->a_data;
359
360         sc = devclass_get_softc(firewire_devclass, unit);
361         if(sc == NULL){
362                 return(EINVAL);
363         }
364         fc = (struct fwohci_softc *)sc->fc;
365
366         if (!ap->a_data)
367                 return(EINVAL);
368
369         switch (ap->a_cmd) {
370         case FWOHCI_WRREG:
371 #define OHCI_MAX_REG 0x800
372                 if(reg->addr <= OHCI_MAX_REG){
373                         OWRITE(fc, reg->addr, reg->data);
374                         reg->data = OREAD(fc, reg->addr);
375                 }else{
376                         err = EINVAL;
377                 }
378                 break;
379         case FWOHCI_RDREG:
380                 if(reg->addr <= OHCI_MAX_REG){
381                         reg->data = OREAD(fc, reg->addr);
382                 }else{
383                         err = EINVAL;
384                 }
385                 break;
386 /* Read DMA descriptors for debug  */
387         case DUMPDMA:
388                 if(*dmach <= OHCI_MAX_DMA_CH ){
389                         dump_dma(fc, *dmach);
390                         dump_db(fc, *dmach);
391                 }else{
392                         err = EINVAL;
393                 }
394                 break;
395 /* Read/Write Phy registers */
396 #define OHCI_MAX_PHY_REG 0xf
397         case FWOHCI_RDPHYREG:
398                 if (reg->addr <= OHCI_MAX_PHY_REG)
399                         reg->data = fwphy_rddata(fc, reg->addr);
400                 else
401                         err = EINVAL;
402                 break;
403         case FWOHCI_WRPHYREG:
404                 if (reg->addr <= OHCI_MAX_PHY_REG)
405                         reg->data = fwphy_wrdata(fc, reg->addr, reg->data);
406                 else
407                         err = EINVAL;
408                 break;
409         default:
410                 err = EINVAL;
411                 break;
412         }
413         return err;
414 }
415
416 static int
417 fwohci_probe_phy(struct fwohci_softc *sc, device_t dev)
418 {
419         u_int32_t reg, reg2;
420         int e1394a = 1;
421 /*
422  * probe PHY parameters
423  * 0. to prove PHY version, whether compliance of 1394a.
424  * 1. to probe maximum speed supported by the PHY and 
425  *    number of port supported by core-logic.
426  *    It is not actually available port on your PC .
427  */
428         OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LPS);
429         DELAY(500);
430
431         reg = fwphy_rddata(sc, FW_PHY_SPD_REG);
432
433         if((reg >> 5) != 7 ){
434                 sc->fc.mode &= ~FWPHYASYST;
435                 sc->fc.nport = reg & FW_PHY_NP;
436                 sc->fc.speed = reg & FW_PHY_SPD >> 6;
437                 if (sc->fc.speed > MAX_SPEED) {
438                         device_printf(dev, "invalid speed %d (fixed to %d).\n",
439                                 sc->fc.speed, MAX_SPEED);
440                         sc->fc.speed = MAX_SPEED;
441                 }
442                 device_printf(dev,
443                         "Phy 1394 only %s, %d ports.\n",
444                         linkspeed[sc->fc.speed], sc->fc.nport);
445         }else{
446                 reg2 = fwphy_rddata(sc, FW_PHY_ESPD_REG);
447                 sc->fc.mode |= FWPHYASYST;
448                 sc->fc.nport = reg & FW_PHY_NP;
449                 sc->fc.speed = (reg2 & FW_PHY_ESPD) >> 5;
450                 if (sc->fc.speed > MAX_SPEED) {
451                         device_printf(dev, "invalid speed %d (fixed to %d).\n",
452                                 sc->fc.speed, MAX_SPEED);
453                         sc->fc.speed = MAX_SPEED;
454                 }
455                 device_printf(dev,
456                         "Phy 1394a available %s, %d ports.\n",
457                         linkspeed[sc->fc.speed], sc->fc.nport);
458
459                 /* check programPhyEnable */
460                 reg2 = fwphy_rddata(sc, 5);
461 #if 0
462                 if (e1394a && (OREAD(sc, OHCI_HCCCTL) & OHCI_HCC_PRPHY)) {
463 #else   /* XXX force to enable 1394a */
464                 if (e1394a) {
465 #endif
466                         if (bootverbose)
467                                 device_printf(dev,
468                                         "Enable 1394a Enhancements\n");
469                         /* enable EAA EMC */
470                         reg2 |= 0x03;
471                         /* set aPhyEnhanceEnable */
472                         OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_PHYEN);
473                         OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_PRPHY);
474                 } else {
475                         /* for safe */
476                         reg2 &= ~0x83;
477                 }
478                 reg2 = fwphy_wrdata(sc, 5, reg2);
479         }
480
481         reg = fwphy_rddata(sc, FW_PHY_SPD_REG);
482         if((reg >> 5) == 7 ){
483                 reg = fwphy_rddata(sc, 4);
484                 reg |= 1 << 6;
485                 fwphy_wrdata(sc, 4, reg);
486                 reg = fwphy_rddata(sc, 4);
487         }
488         return 0;
489 }
490
491
492 void
493 fwohci_reset(struct fwohci_softc *sc, device_t dev)
494 {
495         int i, max_rec, speed;
496         u_int32_t reg, reg2;
497         struct fwohcidb_tr *db_tr;
498
499         /* Disable interrupt */ 
500         OWRITE(sc, FWOHCI_INTMASKCLR, ~0);
501
502         /* Now stopping all DMA channel */
503         OWRITE(sc,  OHCI_ARQCTLCLR, OHCI_CNTL_DMA_RUN);
504         OWRITE(sc,  OHCI_ARSCTLCLR, OHCI_CNTL_DMA_RUN);
505         OWRITE(sc,  OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN);
506         OWRITE(sc,  OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN);
507
508         OWRITE(sc,  OHCI_IR_MASKCLR, ~0);
509         for( i = 0 ; i < sc->fc.nisodma ; i ++ ){
510                 OWRITE(sc,  OHCI_IRCTLCLR(i), OHCI_CNTL_DMA_RUN);
511                 OWRITE(sc,  OHCI_ITCTLCLR(i), OHCI_CNTL_DMA_RUN);
512         }
513
514         /* FLUSH FIFO and reset Transmitter/Reciever */
515         OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_RESET);
516         if (bootverbose)
517                 device_printf(dev, "resetting OHCI...");
518         i = 0;
519         while(OREAD(sc, OHCI_HCCCTL) & OHCI_HCC_RESET) {
520                 if (i++ > 100) break;
521                 DELAY(1000);
522         }
523         if (bootverbose)
524                 kprintf("done (loop=%d)\n", i);
525
526         /* Probe phy */
527         fwohci_probe_phy(sc, dev);
528
529         /* Probe link */
530         reg = OREAD(sc,  OHCI_BUS_OPT);
531         reg2 = reg | OHCI_BUSFNC;
532         max_rec = (reg & 0x0000f000) >> 12;
533         speed = (reg & 0x00000007);
534         device_printf(dev, "Link %s, max_rec %d bytes.\n",
535                         linkspeed[speed], MAXREC(max_rec));
536         /* XXX fix max_rec */
537         sc->fc.maxrec = sc->fc.speed + 8;
538         if (max_rec != sc->fc.maxrec) {
539                 reg2 = (reg2 & 0xffff0fff) | (sc->fc.maxrec << 12);
540                 device_printf(dev, "max_rec %d -> %d\n",
541                                 MAXREC(max_rec), MAXREC(sc->fc.maxrec));
542         }
543         if (bootverbose)
544                 device_printf(dev, "BUS_OPT 0x%x -> 0x%x\n", reg, reg2);
545         OWRITE(sc,  OHCI_BUS_OPT, reg2);
546
547         /* Initialize registers */
548         OWRITE(sc, OHCI_CROMHDR, sc->fc.config_rom[0]);
549         OWRITE(sc, OHCI_CROMPTR, sc->crom_dma.bus_addr);
550         OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_BIGEND);
551         OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_POSTWR);
552         OWRITE(sc, OHCI_SID_BUF, sc->sid_dma.bus_addr);
553         OWRITE(sc, OHCI_LNKCTL, OHCI_CNTL_SID);
554
555         /* Enable link */
556         OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LINKEN);
557
558         /* Force to start async RX DMA */
559         sc->arrq.xferq.flag &= ~FWXFERQ_RUNNING;
560         sc->arrs.xferq.flag &= ~FWXFERQ_RUNNING;
561         fwohci_rx_enable(sc, &sc->arrq);
562         fwohci_rx_enable(sc, &sc->arrs);
563
564         /* Initialize async TX */
565         OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN | OHCI_CNTL_DMA_DEAD);
566         OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN | OHCI_CNTL_DMA_DEAD);
567
568         /* AT Retries */
569         OWRITE(sc, FWOHCI_RETRY,
570                 /* CycleLimit   PhyRespRetries ATRespRetries ATReqRetries */
571                 (0xffff << 16 ) | (0x0f << 8) | (0x0f << 4) | 0x0f) ;
572
573         sc->atrq.top = STAILQ_FIRST(&sc->atrq.db_trq);
574         sc->atrs.top = STAILQ_FIRST(&sc->atrs.db_trq);
575         sc->atrq.bottom = sc->atrq.top;
576         sc->atrs.bottom = sc->atrs.top;
577
578         for( i = 0, db_tr = sc->atrq.top; i < sc->atrq.ndb ;
579                                 i ++, db_tr = STAILQ_NEXT(db_tr, link)){
580                 db_tr->xfer = NULL;
581         }
582         for( i = 0, db_tr = sc->atrs.top; i < sc->atrs.ndb ;
583                                 i ++, db_tr = STAILQ_NEXT(db_tr, link)){
584                 db_tr->xfer = NULL;
585         }
586
587
588         /* Enable interrupt */
589         OWRITE(sc, FWOHCI_INTMASK,
590                         OHCI_INT_ERR  | OHCI_INT_PHY_SID 
591                         | OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS 
592                         | OHCI_INT_DMA_PRRQ | OHCI_INT_DMA_PRRS
593                         | OHCI_INT_PHY_BUS_R | OHCI_INT_PW_ERR);
594         fwohci_set_intr(&sc->fc, 1);
595
596 }
597
598 int
599 fwohci_init(struct fwohci_softc *sc, device_t dev)
600 {
601         int i, mver;
602         u_int32_t reg;
603         u_int8_t ui[8];
604
605 #if FWOHCI_TASKQUEUE
606         TASK_INIT(&sc->fwohci_task_complete, 0, fwohci_complete, sc);
607 #endif
608
609 /* OHCI version */
610         reg = OREAD(sc, OHCI_VERSION);
611         mver = (reg >> 16) & 0xff;
612         device_printf(dev, "OHCI version %x.%x (ROM=%d)\n",
613                         mver, reg & 0xff, (reg>>24) & 1);
614         if (mver < 1 || mver > 9) {
615                 device_printf(dev, "invalid OHCI version\n");
616                 return (ENXIO);
617         }
618
619 /* Available Isochrounous DMA channel probe */
620         OWRITE(sc, OHCI_IT_MASK, 0xffffffff);
621         OWRITE(sc, OHCI_IR_MASK, 0xffffffff);
622         reg = OREAD(sc, OHCI_IT_MASK) & OREAD(sc, OHCI_IR_MASK);
623         OWRITE(sc, OHCI_IT_MASKCLR, 0xffffffff);
624         OWRITE(sc, OHCI_IR_MASKCLR, 0xffffffff);
625         for (i = 0; i < 0x20; i++)
626                 if ((reg & (1 << i)) == 0)
627                         break;
628         sc->fc.nisodma = i;
629         device_printf(dev, "No. of Isochronous channel is %d.\n", i);
630         if (i == 0)
631                 return (ENXIO);
632
633         sc->fc.arq = &sc->arrq.xferq;
634         sc->fc.ars = &sc->arrs.xferq;
635         sc->fc.atq = &sc->atrq.xferq;
636         sc->fc.ats = &sc->atrs.xferq;
637
638         sc->arrq.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE);
639         sc->arrs.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE);
640         sc->atrq.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE);
641         sc->atrs.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE);
642
643         sc->arrq.xferq.start = NULL;
644         sc->arrs.xferq.start = NULL;
645         sc->atrq.xferq.start = fwohci_start_atq;
646         sc->atrs.xferq.start = fwohci_start_ats;
647
648         sc->arrq.xferq.buf = NULL;
649         sc->arrs.xferq.buf = NULL;
650         sc->atrq.xferq.buf = NULL;
651         sc->atrs.xferq.buf = NULL;
652
653         sc->arrq.xferq.dmach = -1;
654         sc->arrs.xferq.dmach = -1;
655         sc->atrq.xferq.dmach = -1;
656         sc->atrs.xferq.dmach = -1;
657
658         sc->arrq.ndesc = 1;
659         sc->arrs.ndesc = 1;
660         sc->atrq.ndesc = 8;     /* equal to maximum of mbuf chains */
661         sc->atrs.ndesc = 2;
662
663         sc->arrq.ndb = NDB;
664         sc->arrs.ndb = NDB / 2;
665         sc->atrq.ndb = NDB;
666         sc->atrs.ndb = NDB / 2;
667
668         for( i = 0 ; i < sc->fc.nisodma ; i ++ ){
669                 sc->fc.it[i] = &sc->it[i].xferq;
670                 sc->fc.ir[i] = &sc->ir[i].xferq;
671                 sc->it[i].xferq.dmach = i;
672                 sc->ir[i].xferq.dmach = i;
673                 sc->it[i].ndb = 0;
674                 sc->ir[i].ndb = 0;
675         }
676
677         sc->fc.tcode = tinfo;
678         sc->fc.dev = dev;
679
680         sc->fc.config_rom = fwdma_malloc(&sc->fc, CROMSIZE, CROMSIZE,
681                                                 &sc->crom_dma, BUS_DMA_WAITOK);
682         if(sc->fc.config_rom == NULL){
683                 device_printf(dev, "config_rom alloc failed.");
684                 return ENOMEM;
685         }
686
687 #if 0
688         bzero(&sc->fc.config_rom[0], CROMSIZE);
689         sc->fc.config_rom[1] = 0x31333934;
690         sc->fc.config_rom[2] = 0xf000a002;
691         sc->fc.config_rom[3] = OREAD(sc, OHCI_EUID_HI);
692         sc->fc.config_rom[4] = OREAD(sc, OHCI_EUID_LO);
693         sc->fc.config_rom[5] = 0;
694         sc->fc.config_rom[0] = (4 << 24) | (5 << 16);
695
696         sc->fc.config_rom[0] |= fw_crc16(&sc->fc.config_rom[1], 5*4);
697 #endif
698
699
700 /* SID recieve buffer must allign 2^11 */
701 #define OHCI_SIDSIZE    (1 << 11)
702         sc->sid_buf = fwdma_malloc(&sc->fc, OHCI_SIDSIZE, OHCI_SIDSIZE,
703                                                 &sc->sid_dma, BUS_DMA_WAITOK);
704         if (sc->sid_buf == NULL) {
705                 device_printf(dev, "sid_buf alloc failed.");
706                 return ENOMEM;
707         }
708
709         fwdma_malloc(&sc->fc, sizeof(u_int32_t), sizeof(u_int32_t),
710                                         &sc->dummy_dma, BUS_DMA_WAITOK);
711
712         if (sc->dummy_dma.v_addr == NULL) {
713                 device_printf(dev, "dummy_dma alloc failed.");
714                 return ENOMEM;
715         }
716
717         fwohci_db_init(sc, &sc->arrq);
718         if ((sc->arrq.flags & FWOHCI_DBCH_INIT) == 0)
719                 return ENOMEM;
720
721         fwohci_db_init(sc, &sc->arrs);
722         if ((sc->arrs.flags & FWOHCI_DBCH_INIT) == 0)
723                 return ENOMEM;
724
725         fwohci_db_init(sc, &sc->atrq);
726         if ((sc->atrq.flags & FWOHCI_DBCH_INIT) == 0)
727                 return ENOMEM;
728
729         fwohci_db_init(sc, &sc->atrs);
730         if ((sc->atrs.flags & FWOHCI_DBCH_INIT) == 0)
731                 return ENOMEM;
732
733         sc->fc.eui.hi = OREAD(sc, FWOHCIGUID_H);
734         sc->fc.eui.lo = OREAD(sc, FWOHCIGUID_L);
735         for( i = 0 ; i < 8 ; i ++)
736                 ui[i] = FW_EUI64_BYTE(&sc->fc.eui,i);
737         device_printf(dev, "EUI64 %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
738                 ui[0], ui[1], ui[2], ui[3], ui[4], ui[5], ui[6], ui[7]);
739
740         sc->fc.ioctl = fwohci_ioctl;
741         sc->fc.cyctimer = fwohci_cyctimer;
742         sc->fc.set_bmr = fwohci_set_bus_manager;
743         sc->fc.ibr = fwohci_ibr;
744         sc->fc.irx_enable = fwohci_irx_enable;
745         sc->fc.irx_disable = fwohci_irx_disable;
746
747         sc->fc.itx_enable = fwohci_itxbuf_enable;
748         sc->fc.itx_disable = fwohci_itx_disable;
749 #if BYTE_ORDER == BIG_ENDIAN
750         sc->fc.irx_post = fwohci_irx_post;
751 #else
752         sc->fc.irx_post = NULL;
753 #endif
754         sc->fc.itx_post = NULL;
755         sc->fc.timeout = fwohci_timeout;
756         sc->fc.poll = fwohci_poll;
757         sc->fc.set_intr = fwohci_set_intr;
758
759         sc->intmask = sc->irstat = sc->itstat = 0;
760
761         fw_init(&sc->fc);
762         fwohci_reset(sc, dev);
763
764         return 0;
765 }
766
767 void
768 fwohci_timeout(void *arg)
769 {
770         struct fwohci_softc *sc;
771
772         sc = (struct fwohci_softc *)arg;
773 }
774
775 u_int32_t
776 fwohci_cyctimer(struct firewire_comm *fc)
777 {
778         struct fwohci_softc *sc = (struct fwohci_softc *)fc;
779         return(OREAD(sc, OHCI_CYCLETIMER));
780 }
781
782 int
783 fwohci_detach(struct fwohci_softc *sc, device_t dev)
784 {
785         int i;
786
787         if (sc->sid_buf != NULL)
788                 fwdma_free(&sc->fc, &sc->sid_dma);
789         if (sc->fc.config_rom != NULL)
790                 fwdma_free(&sc->fc, &sc->crom_dma);
791
792         fwohci_db_free(&sc->arrq);
793         fwohci_db_free(&sc->arrs);
794
795         fwohci_db_free(&sc->atrq);
796         fwohci_db_free(&sc->atrs);
797
798         for( i = 0 ; i < sc->fc.nisodma ; i ++ ){
799                 fwohci_db_free(&sc->it[i]);
800                 fwohci_db_free(&sc->ir[i]);
801         }
802
803         return 0;
804 }
805
806 #define LAST_DB(dbtr, db) do {                                          \
807         struct fwohcidb_tr *_dbtr = (dbtr);                             \
808         int _cnt = _dbtr->dbcnt;                                        \
809         db = &_dbtr->db[ (_cnt > 2) ? (_cnt -1) : 0];                   \
810 } while (0)
811         
812 static void
813 fwohci_execute_db(void *arg, bus_dma_segment_t *segs, int nseg, int error)
814 {
815         struct fwohcidb_tr *db_tr;
816         struct fwohcidb *db;
817         bus_dma_segment_t *s;
818         int i;
819
820         db_tr = (struct fwohcidb_tr *)arg;
821         db = &db_tr->db[db_tr->dbcnt];
822         if (error) {
823                 if (firewire_debug || error != EFBIG)
824                         kprintf("fwohci_execute_db: error=%d\n", error);
825                 return;
826         }
827         for (i = 0; i < nseg; i++) {
828                 s = &segs[i];
829                 FWOHCI_DMA_WRITE(db->db.desc.addr, s->ds_addr);
830                 FWOHCI_DMA_WRITE(db->db.desc.cmd, s->ds_len);
831                 FWOHCI_DMA_WRITE(db->db.desc.res, 0);
832                 db++;
833                 db_tr->dbcnt++;
834         }
835 }
836
837 static void
838 fwohci_execute_db2(void *arg, bus_dma_segment_t *segs, int nseg,
839                                                 bus_size_t size, int error)
840 {
841         fwohci_execute_db(arg, segs, nseg, error);
842 }
843
844 static void
845 fwohci_start(struct fwohci_softc *sc, struct fwohci_dbch *dbch)
846 {
847         int i;
848         int tcode, hdr_len, pl_off;
849         int fsegment = -1;
850         u_int32_t off;
851         struct fw_xfer *xfer;
852         struct fw_pkt *fp;
853         struct fwohci_txpkthdr *ohcifp;
854         struct fwohcidb_tr *db_tr;
855         struct fwohcidb *db;
856         u_int32_t *ld;
857         struct tcode_info *info;
858         static int maxdesc=0;
859
860         if(&sc->atrq == dbch){
861                 off = OHCI_ATQOFF;
862         }else if(&sc->atrs == dbch){
863                 off = OHCI_ATSOFF;
864         }else{
865                 return;
866         }
867
868         if (dbch->flags & FWOHCI_DBCH_FULL)
869                 return;
870
871         crit_enter();
872         db_tr = dbch->top;
873 txloop:
874         xfer = STAILQ_FIRST(&dbch->xferq.q);
875         if(xfer == NULL){
876                 goto kick;
877         }
878         if(dbch->xferq.queued == 0 ){
879                 device_printf(sc->fc.dev, "TX queue empty\n");
880         }
881         STAILQ_REMOVE_HEAD(&dbch->xferq.q, link);
882         db_tr->xfer = xfer;
883         xfer->state = FWXF_START;
884
885         fp = &xfer->send.hdr;
886         tcode = fp->mode.common.tcode;
887
888         ohcifp = (struct fwohci_txpkthdr *) db_tr->db[1].db.immed;
889         info = &tinfo[tcode];
890         hdr_len = pl_off = info->hdr_len;
891
892         ld = &ohcifp->mode.ld[0];
893         ld[0] = ld[1] = ld[2] = ld[3] = 0;
894         for( i = 0 ; i < pl_off ; i+= 4)
895                 ld[i/4] = fp->mode.ld[i/4];
896
897         ohcifp->mode.common.spd = xfer->send.spd & 0x7;
898         if (tcode == FWTCODE_STREAM ){
899                 hdr_len = 8;
900                 ohcifp->mode.stream.len = fp->mode.stream.len;
901         } else if (tcode == FWTCODE_PHY) {
902                 hdr_len = 12;
903                 ld[1] = fp->mode.ld[1];
904                 ld[2] = fp->mode.ld[2];
905                 ohcifp->mode.common.spd = 0;
906                 ohcifp->mode.common.tcode = FWOHCITCODE_PHY;
907         } else {
908                 ohcifp->mode.asycomm.dst = fp->mode.hdr.dst;
909                 ohcifp->mode.asycomm.srcbus = OHCI_ASYSRCBUS;
910                 ohcifp->mode.asycomm.tlrt |= FWRETRY_X;
911         }
912         db = &db_tr->db[0];
913         FWOHCI_DMA_WRITE(db->db.desc.cmd,
914                         OHCI_OUTPUT_MORE | OHCI_KEY_ST2 | hdr_len);
915         FWOHCI_DMA_WRITE(db->db.desc.addr, 0);
916         FWOHCI_DMA_WRITE(db->db.desc.res, 0);
917 /* Specify bound timer of asy. responce */
918         if(&sc->atrs == dbch){
919                 FWOHCI_DMA_WRITE(db->db.desc.res,
920                          (OREAD(sc, OHCI_CYCLETIMER) >> 12) + (1 << 13));
921         }
922 #if BYTE_ORDER == BIG_ENDIAN
923         if (tcode == FWTCODE_WREQQ || tcode == FWTCODE_RRESQ)
924                 hdr_len = 12;
925         for (i = 0; i < hdr_len/4; i ++)
926                 FWOHCI_DMA_WRITE(ld[i], ld[i]);
927 #endif
928
929 again:
930         db_tr->dbcnt = 2;
931         db = &db_tr->db[db_tr->dbcnt];
932         if (xfer->send.pay_len > 0) {
933                 int err;
934                 /* handle payload */
935                 if (xfer->mbuf == NULL) {
936                         err = bus_dmamap_load(dbch->dmat, db_tr->dma_map,
937                                 &xfer->send.payload[0], xfer->send.pay_len,
938                                 fwohci_execute_db, db_tr,
939                                 /*flags*/0);
940                 } else {
941                         /* XXX we can handle only 6 (=8-2) mbuf chains */
942                         err = bus_dmamap_load_mbuf(dbch->dmat, db_tr->dma_map,
943                                 xfer->mbuf,
944                                 fwohci_execute_db2, db_tr,
945                                 /* flags */0);
946                         if (err == EFBIG) {
947                                 struct mbuf *m0;
948
949                                 if (firewire_debug)
950                                         device_printf(sc->fc.dev, "EFBIG.\n");
951                                 m0 = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
952                                 if (m0 != NULL) {
953                                         m_copydata(xfer->mbuf, 0,
954                                                 xfer->mbuf->m_pkthdr.len,
955                                                 mtod(m0, caddr_t));
956                                         m0->m_len = m0->m_pkthdr.len = 
957                                                 xfer->mbuf->m_pkthdr.len;
958                                         m_freem(xfer->mbuf);
959                                         xfer->mbuf = m0;
960                                         goto again;
961                                 }
962                                 device_printf(sc->fc.dev, "m_getcl failed.\n");
963                         }
964                 }
965                 if (err)
966                         kprintf("dmamap_load: err=%d\n", err);
967                 bus_dmamap_sync(dbch->dmat, db_tr->dma_map,
968                                                 BUS_DMASYNC_PREWRITE);
969 #if 0 /* OHCI_OUTPUT_MODE == 0 */
970                 for (i = 2; i < db_tr->dbcnt; i++)
971                         FWOHCI_DMA_SET(db_tr->db[i].db.desc.cmd,
972                                                 OHCI_OUTPUT_MORE);
973 #endif
974         }
975         if (maxdesc < db_tr->dbcnt) {
976                 maxdesc = db_tr->dbcnt;
977                 if (bootverbose)
978                         device_printf(sc->fc.dev, "maxdesc: %d\n", maxdesc);
979         }
980         /* last db */
981         LAST_DB(db_tr, db);
982         FWOHCI_DMA_SET(db->db.desc.cmd,
983                 OHCI_OUTPUT_LAST | OHCI_INTERRUPT_ALWAYS | OHCI_BRANCH_ALWAYS);
984         FWOHCI_DMA_WRITE(db->db.desc.depend,
985                         STAILQ_NEXT(db_tr, link)->bus_addr);
986
987         if(fsegment == -1 )
988                 fsegment = db_tr->dbcnt;
989         if (dbch->pdb_tr != NULL) {
990                 LAST_DB(dbch->pdb_tr, db);
991                 FWOHCI_DMA_SET(db->db.desc.depend, db_tr->dbcnt);
992         }
993         dbch->pdb_tr = db_tr;
994         db_tr = STAILQ_NEXT(db_tr, link);
995         if(db_tr != dbch->bottom){
996                 goto txloop;
997         } else {
998                 device_printf(sc->fc.dev, "fwohci_start: lack of db_trq\n");
999                 dbch->flags |= FWOHCI_DBCH_FULL;
1000         }
1001 kick:
1002         /* kick asy q */
1003         fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD);
1004         fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE);
1005
1006         if(dbch->xferq.flag & FWXFERQ_RUNNING) {
1007                 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_WAKE);
1008         } else {
1009                 if (bootverbose)
1010                         device_printf(sc->fc.dev, "start AT DMA status=%x\n",
1011                                         OREAD(sc, OHCI_DMACTL(off)));
1012                 OWRITE(sc, OHCI_DMACMD(off), dbch->top->bus_addr | fsegment);
1013                 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_RUN);
1014                 dbch->xferq.flag |= FWXFERQ_RUNNING;
1015         }
1016
1017         dbch->top = db_tr;
1018         crit_exit();
1019         return;
1020 }
1021
1022 static void
1023 fwohci_start_atq(struct firewire_comm *fc)
1024 {
1025         struct fwohci_softc *sc = (struct fwohci_softc *)fc;
1026         fwohci_start( sc, &(sc->atrq));
1027         return;
1028 }
1029
1030 static void
1031 fwohci_start_ats(struct firewire_comm *fc)
1032 {
1033         struct fwohci_softc *sc = (struct fwohci_softc *)fc;
1034         fwohci_start( sc, &(sc->atrs));
1035         return;
1036 }
1037
1038 void
1039 fwohci_txd(struct fwohci_softc *sc, struct fwohci_dbch *dbch)
1040 {
1041         int ch, err = 0;
1042         struct fwohcidb_tr *tr;
1043         struct fwohcidb *db;
1044         struct fw_xfer *xfer;
1045         u_int32_t off;
1046         u_int stat, status;
1047         int     packets;
1048         struct firewire_comm *fc = (struct firewire_comm *)sc;
1049
1050         if(&sc->atrq == dbch){
1051                 off = OHCI_ATQOFF;
1052                 ch = ATRQ_CH;
1053         }else if(&sc->atrs == dbch){
1054                 off = OHCI_ATSOFF;
1055                 ch = ATRS_CH;
1056         }else{
1057                 return;
1058         }
1059         crit_enter();
1060         tr = dbch->bottom;
1061         packets = 0;
1062         fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTREAD);
1063         fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTWRITE);
1064         while(dbch->xferq.queued > 0){
1065                 LAST_DB(tr, db);
1066                 status = FWOHCI_DMA_READ(db->db.desc.res) >> OHCI_STATUS_SHIFT;
1067                 if(!(status & OHCI_CNTL_DMA_ACTIVE)){
1068                         if (fc->status != FWBUSRESET) 
1069                                 /* maybe out of order?? */
1070                                 goto out;
1071                 }
1072                 bus_dmamap_sync(dbch->dmat, tr->dma_map,
1073                         BUS_DMASYNC_POSTWRITE);
1074                 bus_dmamap_unload(dbch->dmat, tr->dma_map);
1075 #if 1
1076                 if (firewire_debug)
1077                         dump_db(sc, ch);
1078 #endif
1079                 if(status & OHCI_CNTL_DMA_DEAD) {
1080                         /* Stop DMA */
1081                         OWRITE(sc, OHCI_DMACTLCLR(off), OHCI_CNTL_DMA_RUN);
1082                         device_printf(sc->fc.dev, "force reset AT FIFO\n");
1083                         OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_LINKEN);
1084                         OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LPS | OHCI_HCC_LINKEN);
1085                         OWRITE(sc, OHCI_DMACTLCLR(off), OHCI_CNTL_DMA_RUN);
1086                 }
1087                 stat = status & FWOHCIEV_MASK;
1088                 switch(stat){
1089                 case FWOHCIEV_ACKPEND:
1090                 case FWOHCIEV_ACKCOMPL:
1091                         err = 0;
1092                         break;
1093                 case FWOHCIEV_ACKBSA:
1094                 case FWOHCIEV_ACKBSB:
1095                 case FWOHCIEV_ACKBSX:
1096                         device_printf(sc->fc.dev, "txd err=%2x %s\n", stat, fwohcicode[stat]);
1097                         err = EBUSY;
1098                         break;
1099                 case FWOHCIEV_FLUSHED:
1100                 case FWOHCIEV_ACKTARD:
1101                         device_printf(sc->fc.dev, "txd err=%2x %s\n", stat, fwohcicode[stat]);
1102                         err = EAGAIN;
1103                         break;
1104                 case FWOHCIEV_MISSACK:
1105                 case FWOHCIEV_UNDRRUN:
1106                 case FWOHCIEV_OVRRUN:
1107                 case FWOHCIEV_DESCERR:
1108                 case FWOHCIEV_DTRDERR:
1109                 case FWOHCIEV_TIMEOUT:
1110                 case FWOHCIEV_TCODERR:
1111                 case FWOHCIEV_UNKNOWN:
1112                 case FWOHCIEV_ACKDERR:
1113                 case FWOHCIEV_ACKTERR:
1114                 default:
1115                         device_printf(sc->fc.dev, "txd err=%2x %s\n",
1116                                                         stat, fwohcicode[stat]);
1117                         err = EINVAL;
1118                         break;
1119                 }
1120                 if (tr->xfer != NULL) {
1121                         xfer = tr->xfer;
1122                         if (xfer->state == FWXF_RCVD) {
1123 #if 0
1124                                 if (firewire_debug)
1125                                         kprintf("already rcvd\n");
1126 #endif
1127                                 fw_xfer_done(xfer);
1128                         } else {
1129                                 xfer->state = FWXF_SENT;
1130                                 if (err == EBUSY && fc->status != FWBUSRESET) {
1131                                         xfer->state = FWXF_BUSY;
1132                                         xfer->resp = err;
1133                                         if (xfer->retry_req != NULL)
1134                                                 xfer->retry_req(xfer);
1135                                         else {
1136                                                 xfer->recv.pay_len = 0;
1137                                                 fw_xfer_done(xfer);
1138                                         }
1139                                 } else if (stat != FWOHCIEV_ACKPEND) {
1140                                         if (stat != FWOHCIEV_ACKCOMPL)
1141                                                 xfer->state = FWXF_SENTERR;
1142                                         xfer->resp = err;
1143                                         xfer->recv.pay_len = 0;
1144                                         fw_xfer_done(xfer);
1145                                 }
1146                         }
1147                         /*
1148                          * The watchdog timer takes care of split
1149                          * transcation timeout for ACKPEND case.
1150                          */
1151                 } else {
1152                         kprintf("this shouldn't happen\n");
1153                 }
1154                 dbch->xferq.queued --;
1155                 tr->xfer = NULL;
1156
1157                 packets ++;
1158                 tr = STAILQ_NEXT(tr, link);
1159                 dbch->bottom = tr;
1160                 if (dbch->bottom == dbch->top) {
1161                         /* we reaches the end of context program */
1162                         if (firewire_debug && dbch->xferq.queued > 0)
1163                                 kprintf("queued > 0\n");
1164                         break;
1165                 }
1166         }
1167 out:
1168         if ((dbch->flags & FWOHCI_DBCH_FULL) && packets > 0) {
1169                 kprintf("make free slot\n");
1170                 dbch->flags &= ~FWOHCI_DBCH_FULL;
1171                 fwohci_start(sc, dbch);
1172         }
1173         crit_exit();
1174 }
1175
1176 static void
1177 fwohci_db_free(struct fwohci_dbch *dbch)
1178 {
1179         struct fwohcidb_tr *db_tr;
1180         int idb;
1181
1182         if ((dbch->flags & FWOHCI_DBCH_INIT) == 0)
1183                 return;
1184
1185         for(db_tr = STAILQ_FIRST(&dbch->db_trq), idb = 0; idb < dbch->ndb;
1186                         db_tr = STAILQ_NEXT(db_tr, link), idb++){
1187                 if ((dbch->xferq.flag & FWXFERQ_EXTBUF) == 0 &&
1188                                         db_tr->buf != NULL) {
1189                         fwdma_free_size(dbch->dmat, db_tr->dma_map,
1190                                         db_tr->buf, dbch->xferq.psize);
1191                         db_tr->buf = NULL;
1192                 } else if (db_tr->dma_map != NULL)
1193                         bus_dmamap_destroy(dbch->dmat, db_tr->dma_map);
1194         }
1195         dbch->ndb = 0;
1196         db_tr = STAILQ_FIRST(&dbch->db_trq);
1197         fwdma_free_multiseg(dbch->am);
1198         kfree(db_tr, M_FW);
1199         STAILQ_INIT(&dbch->db_trq);
1200         dbch->flags &= ~FWOHCI_DBCH_INIT;
1201 }
1202
1203 static void
1204 fwohci_db_init(struct fwohci_softc *sc, struct fwohci_dbch *dbch)
1205 {
1206         int     idb;
1207         struct fwohcidb_tr *db_tr;
1208
1209         if ((dbch->flags & FWOHCI_DBCH_INIT) != 0)
1210                 goto out;
1211
1212         /* create dma_tag for buffers */
1213 #define MAX_REQCOUNT    0xffff
1214         if (bus_dma_tag_create(/*parent*/ sc->fc.dmat,
1215                         /*alignment*/ 1, /*boundary*/ 0,
1216                         /*lowaddr*/ BUS_SPACE_MAXADDR_32BIT,
1217                         /*highaddr*/ BUS_SPACE_MAXADDR,
1218                         /*filter*/NULL, /*filterarg*/NULL,
1219                         /*maxsize*/ dbch->xferq.psize,
1220                         /*nsegments*/ dbch->ndesc > 3 ? dbch->ndesc - 2 : 1,
1221                         /*maxsegsz*/ MAX_REQCOUNT,
1222                         /*flags*/ 0,
1223 #if defined(__FreeBSD__) && __FreeBSD_version >= 501102
1224                         /*lockfunc*/busdma_lock_mutex,
1225                         /*lockarg*/&Giant,
1226 #endif
1227                         &dbch->dmat))
1228                 return;
1229
1230         /* allocate DB entries and attach one to each DMA channels */
1231         /* DB entry must start at 16 bytes bounary. */
1232         STAILQ_INIT(&dbch->db_trq);
1233         db_tr = (struct fwohcidb_tr *)
1234                 kmalloc(sizeof(struct fwohcidb_tr) * dbch->ndb,
1235                 M_FW, M_WAITOK | M_ZERO);
1236
1237 #define DB_SIZE(x) (sizeof(struct fwohcidb) * (x)->ndesc)
1238         dbch->am = fwdma_malloc_multiseg(&sc->fc, DB_SIZE(dbch),
1239                 DB_SIZE(dbch), dbch->ndb, BUS_DMA_WAITOK);
1240         if (dbch->am == NULL) {
1241                 kprintf("fwohci_db_init: fwdma_malloc_multiseg failed\n");
1242                 kfree(db_tr, M_FW);
1243                 return;
1244         }
1245         /* Attach DB to DMA ch. */
1246         for(idb = 0 ; idb < dbch->ndb ; idb++){
1247                 db_tr->dbcnt = 0;
1248                 db_tr->db = (struct fwohcidb *)fwdma_v_addr(dbch->am, idb);
1249                 db_tr->bus_addr = fwdma_bus_addr(dbch->am, idb);
1250                 /* create dmamap for buffers */
1251                 /* XXX do we need 4bytes alignment tag? */
1252                 /* XXX don't alloc dma_map for AR */
1253                 if (bus_dmamap_create(dbch->dmat, 0, &db_tr->dma_map) != 0) {
1254                         kprintf("bus_dmamap_create failed\n");
1255                         dbch->flags = FWOHCI_DBCH_INIT; /* XXX fake */
1256                         fwohci_db_free(dbch);
1257                         return;
1258                 }
1259                 STAILQ_INSERT_TAIL(&dbch->db_trq, db_tr, link);
1260                 if (dbch->xferq.flag & FWXFERQ_EXTBUF) {
1261                         if (idb % dbch->xferq.bnpacket == 0)
1262                                 dbch->xferq.bulkxfer[idb / dbch->xferq.bnpacket
1263                                                 ].start = (caddr_t)db_tr;
1264                         if ((idb + 1) % dbch->xferq.bnpacket == 0)
1265                                 dbch->xferq.bulkxfer[idb / dbch->xferq.bnpacket
1266                                                 ].end = (caddr_t)db_tr;
1267                 }
1268                 db_tr++;
1269         }
1270         STAILQ_LAST(&dbch->db_trq, fwohcidb_tr,link)->link.stqe_next
1271                         = STAILQ_FIRST(&dbch->db_trq);
1272 out:
1273         dbch->xferq.queued = 0;
1274         dbch->pdb_tr = NULL;
1275         dbch->top = STAILQ_FIRST(&dbch->db_trq);
1276         dbch->bottom = dbch->top;
1277         dbch->flags = FWOHCI_DBCH_INIT;
1278 }
1279
1280 static int
1281 fwohci_itx_disable(struct firewire_comm *fc, int dmach)
1282 {
1283         struct fwohci_softc *sc = (struct fwohci_softc *)fc;
1284         int sleepch;
1285
1286         OWRITE(sc, OHCI_ITCTLCLR(dmach), 
1287                         OHCI_CNTL_DMA_RUN | OHCI_CNTL_CYCMATCH_S);
1288         OWRITE(sc, OHCI_IT_MASKCLR, 1 << dmach);
1289         OWRITE(sc, OHCI_IT_STATCLR, 1 << dmach);
1290         /* XXX we cannot free buffers until the DMA really stops */
1291         tsleep((void *)&sleepch, FWPRI, "fwitxd", hz);
1292         fwohci_db_free(&sc->it[dmach]);
1293         sc->it[dmach].xferq.flag &= ~FWXFERQ_RUNNING;
1294         return 0;
1295 }
1296
1297 static int
1298 fwohci_irx_disable(struct firewire_comm *fc, int dmach)
1299 {
1300         struct fwohci_softc *sc = (struct fwohci_softc *)fc;
1301         int sleepch;
1302
1303         OWRITE(sc, OHCI_IRCTLCLR(dmach), OHCI_CNTL_DMA_RUN);
1304         OWRITE(sc, OHCI_IR_MASKCLR, 1 << dmach);
1305         OWRITE(sc, OHCI_IR_STATCLR, 1 << dmach);
1306         /* XXX we cannot free buffers until the DMA really stops */
1307         tsleep((void *)&sleepch, FWPRI, "fwirxd", hz);
1308         fwohci_db_free(&sc->ir[dmach]);
1309         sc->ir[dmach].xferq.flag &= ~FWXFERQ_RUNNING;
1310         return 0;
1311 }
1312
1313 #if BYTE_ORDER == BIG_ENDIAN
1314 static void
1315 fwohci_irx_post (struct firewire_comm *fc , u_int32_t *qld)
1316 {
1317         qld[0] = FWOHCI_DMA_READ(qld[0]);
1318         return;
1319 }
1320 #endif
1321
1322 static int
1323 fwohci_tx_enable(struct fwohci_softc *sc, struct fwohci_dbch *dbch)
1324 {
1325         int err = 0;
1326         int idb, z, i, dmach = 0, ldesc;
1327         u_int32_t off = 0;
1328         struct fwohcidb_tr *db_tr;
1329         struct fwohcidb *db;
1330
1331         if(!(dbch->xferq.flag & FWXFERQ_EXTBUF)){
1332                 err = EINVAL;
1333                 return err;
1334         }
1335         z = dbch->ndesc;
1336         for(dmach = 0 ; dmach < sc->fc.nisodma ; dmach++){
1337                 if( &sc->it[dmach] == dbch){
1338                         off = OHCI_ITOFF(dmach);
1339                         break;
1340                 }
1341         }
1342         if(off == 0){
1343                 err = EINVAL;
1344                 return err;
1345         }
1346         if(dbch->xferq.flag & FWXFERQ_RUNNING)
1347                 return err;
1348         dbch->xferq.flag |= FWXFERQ_RUNNING;
1349         for( i = 0, dbch->bottom = dbch->top; i < (dbch->ndb - 1); i++){
1350                 dbch->bottom = STAILQ_NEXT(dbch->bottom, link);
1351         }
1352         db_tr = dbch->top;
1353         for (idb = 0; idb < dbch->ndb; idb ++) {
1354                 fwohci_add_tx_buf(dbch, db_tr, idb);
1355                 if(STAILQ_NEXT(db_tr, link) == NULL){
1356                         break;
1357                 }
1358                 db = db_tr->db;
1359                 ldesc = db_tr->dbcnt - 1;
1360                 FWOHCI_DMA_WRITE(db[0].db.desc.depend,
1361                                 STAILQ_NEXT(db_tr, link)->bus_addr | z);
1362                 db[ldesc].db.desc.depend = db[0].db.desc.depend;
1363                 if(dbch->xferq.flag & FWXFERQ_EXTBUF){
1364                         if(((idb + 1 ) % dbch->xferq.bnpacket) == 0){
1365                                 FWOHCI_DMA_SET(
1366                                         db[ldesc].db.desc.cmd,
1367                                         OHCI_INTERRUPT_ALWAYS);
1368                                 /* OHCI 1.1 and above */
1369                                 FWOHCI_DMA_SET(
1370                                         db[0].db.desc.cmd,
1371                                         OHCI_INTERRUPT_ALWAYS);
1372                         }
1373                 }
1374                 db_tr = STAILQ_NEXT(db_tr, link);
1375         }
1376         FWOHCI_DMA_CLEAR(
1377                 dbch->bottom->db[dbch->bottom->dbcnt - 1].db.desc.depend, 0xf);
1378         return err;
1379 }
1380
1381 static int
1382 fwohci_rx_enable(struct fwohci_softc *sc, struct fwohci_dbch *dbch)
1383 {
1384         int err = 0;
1385         int idb, z, i, dmach = 0, ldesc;
1386         u_int32_t off = 0;
1387         struct fwohcidb_tr *db_tr;
1388         struct fwohcidb *db;
1389
1390         z = dbch->ndesc;
1391         if(&sc->arrq == dbch){
1392                 off = OHCI_ARQOFF;
1393         }else if(&sc->arrs == dbch){
1394                 off = OHCI_ARSOFF;
1395         }else{
1396                 for(dmach = 0 ; dmach < sc->fc.nisodma ; dmach++){
1397                         if( &sc->ir[dmach] == dbch){
1398                                 off = OHCI_IROFF(dmach);
1399                                 break;
1400                         }
1401                 }
1402         }
1403         if(off == 0){
1404                 err = EINVAL;
1405                 return err;
1406         }
1407         if(dbch->xferq.flag & FWXFERQ_STREAM){
1408                 if(dbch->xferq.flag & FWXFERQ_RUNNING)
1409                         return err;
1410         }else{
1411                 if(dbch->xferq.flag & FWXFERQ_RUNNING){
1412                         err = EBUSY;
1413                         return err;
1414                 }
1415         }
1416         dbch->xferq.flag |= FWXFERQ_RUNNING;
1417         dbch->top = STAILQ_FIRST(&dbch->db_trq);
1418         for( i = 0, dbch->bottom = dbch->top; i < (dbch->ndb - 1); i++){
1419                 dbch->bottom = STAILQ_NEXT(dbch->bottom, link);
1420         }
1421         db_tr = dbch->top;
1422         for (idb = 0; idb < dbch->ndb; idb ++) {
1423                 fwohci_add_rx_buf(dbch, db_tr, idb, &sc->dummy_dma);
1424                 if (STAILQ_NEXT(db_tr, link) == NULL)
1425                         break;
1426                 db = db_tr->db;
1427                 ldesc = db_tr->dbcnt - 1;
1428                 FWOHCI_DMA_WRITE(db[ldesc].db.desc.depend,
1429                         STAILQ_NEXT(db_tr, link)->bus_addr | z);
1430                 if(dbch->xferq.flag & FWXFERQ_EXTBUF){
1431                         if(((idb + 1 ) % dbch->xferq.bnpacket) == 0){
1432                                 FWOHCI_DMA_SET(
1433                                         db[ldesc].db.desc.cmd,
1434                                         OHCI_INTERRUPT_ALWAYS);
1435                                 FWOHCI_DMA_CLEAR(
1436                                         db[ldesc].db.desc.depend,
1437                                         0xf);
1438                         }
1439                 }
1440                 db_tr = STAILQ_NEXT(db_tr, link);
1441         }
1442         FWOHCI_DMA_CLEAR(
1443                 dbch->bottom->db[db_tr->dbcnt - 1].db.desc.depend, 0xf);
1444         dbch->buf_offset = 0;
1445         fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD);
1446         fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE);
1447         if(dbch->xferq.flag & FWXFERQ_STREAM){
1448                 return err;
1449         }else{
1450                 OWRITE(sc, OHCI_DMACMD(off), dbch->top->bus_addr | z);
1451         }
1452         OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_RUN);
1453         return err;
1454 }
1455
1456 static int
1457 fwohci_next_cycle(struct firewire_comm *fc, int cycle_now)
1458 {
1459         int sec, cycle, cycle_match;
1460
1461         cycle = cycle_now & 0x1fff;
1462         sec = cycle_now >> 13;
1463 #define CYCLE_MOD       0x10
1464 #if 1
1465 #define CYCLE_DELAY     8       /* min delay to start DMA */
1466 #else
1467 #define CYCLE_DELAY     7000    /* min delay to start DMA */
1468 #endif
1469         cycle = cycle + CYCLE_DELAY;
1470         if (cycle >= 8000) {
1471                 sec ++;
1472                 cycle -= 8000;
1473         }
1474         cycle = roundup2(cycle, CYCLE_MOD);
1475         if (cycle >= 8000) {
1476                 sec ++;
1477                 if (cycle == 8000)
1478                         cycle = 0;
1479                 else
1480                         cycle = CYCLE_MOD;
1481         }
1482         cycle_match = ((sec << 13) | cycle) & 0x7ffff;
1483
1484         return(cycle_match);
1485 }
1486
1487 static int
1488 fwohci_itxbuf_enable(struct firewire_comm *fc, int dmach)
1489 {
1490         struct fwohci_softc *sc = (struct fwohci_softc *)fc;
1491         int err = 0;
1492         unsigned short tag, ich;
1493         struct fwohci_dbch *dbch;
1494         int cycle_match, cycle_now, ldesc;
1495         u_int32_t stat;
1496         struct fw_bulkxfer *first, *chunk, *prev;
1497         struct fw_xferq *it;
1498
1499         dbch = &sc->it[dmach];
1500         it = &dbch->xferq;
1501
1502         tag = (it->flag >> 6) & 3;
1503         ich = it->flag & 0x3f;
1504         if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) {
1505                 dbch->ndb = it->bnpacket * it->bnchunk;
1506                 dbch->ndesc = 3;
1507                 fwohci_db_init(sc, dbch);
1508                 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0)
1509                         return ENOMEM;
1510                 err = fwohci_tx_enable(sc, dbch);
1511         }
1512         if(err)
1513                 return err;
1514
1515         ldesc = dbch->ndesc - 1;
1516         crit_enter();
1517         prev = STAILQ_LAST(&it->stdma, fw_bulkxfer, link);
1518         while  ((chunk = STAILQ_FIRST(&it->stvalid)) != NULL) {
1519                 struct fwohcidb *db;
1520
1521                 fwdma_sync_multiseg(it->buf, chunk->poffset, it->bnpacket,
1522                                         BUS_DMASYNC_PREWRITE);
1523                 fwohci_txbufdb(sc, dmach, chunk);
1524                 if (prev != NULL) {
1525                         db = ((struct fwohcidb_tr *)(prev->end))->db;
1526 #if 0 /* XXX necessary? */
1527                         FWOHCI_DMA_SET(db[ldesc].db.desc.cmd,
1528                                                 OHCI_BRANCH_ALWAYS);
1529 #endif
1530 #if 0 /* if bulkxfer->npacket changes */
1531                         db[ldesc].db.desc.depend = db[0].db.desc.depend = 
1532                                 ((struct fwohcidb_tr *)
1533                                 (chunk->start))->bus_addr | dbch->ndesc;
1534 #else
1535                         FWOHCI_DMA_SET(db[0].db.desc.depend, dbch->ndesc);
1536                         FWOHCI_DMA_SET(db[ldesc].db.desc.depend, dbch->ndesc);
1537 #endif
1538                 }
1539                 STAILQ_REMOVE_HEAD(&it->stvalid, link);
1540                 STAILQ_INSERT_TAIL(&it->stdma, chunk, link);
1541                 prev = chunk;
1542         }
1543         fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE);
1544         fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD);
1545         crit_exit();
1546         stat = OREAD(sc, OHCI_ITCTL(dmach));
1547         if (firewire_debug && (stat & OHCI_CNTL_CYCMATCH_S))
1548                 kprintf("stat 0x%x\n", stat);
1549
1550         if (stat & (OHCI_CNTL_DMA_ACTIVE | OHCI_CNTL_CYCMATCH_S))
1551                 return 0;
1552
1553 #if 0
1554         OWRITE(sc, OHCI_ITCTLCLR(dmach), OHCI_CNTL_DMA_RUN);
1555 #endif
1556         OWRITE(sc, OHCI_IT_MASKCLR, 1 << dmach);
1557         OWRITE(sc, OHCI_IT_STATCLR, 1 << dmach);
1558         OWRITE(sc, OHCI_IT_MASK, 1 << dmach);
1559         OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_DMA_IT);
1560
1561         first = STAILQ_FIRST(&it->stdma);
1562         OWRITE(sc, OHCI_ITCMD(dmach),
1563                 ((struct fwohcidb_tr *)(first->start))->bus_addr | dbch->ndesc);
1564         if (firewire_debug) {
1565                 kprintf("fwohci_itxbuf_enable: kick 0x%08x\n", stat);
1566 #if 1
1567                 dump_dma(sc, ITX_CH + dmach);
1568 #endif
1569         }
1570         if ((stat & OHCI_CNTL_DMA_RUN) == 0) {
1571 #if 1
1572                 /* Don't start until all chunks are buffered */
1573                 if (STAILQ_FIRST(&it->stfree) != NULL)
1574                         goto out;
1575 #endif
1576 #if 1
1577                 /* Clear cycle match counter bits */
1578                 OWRITE(sc, OHCI_ITCTLCLR(dmach), 0xffff0000);
1579
1580                 /* 2bit second + 13bit cycle */
1581                 cycle_now = (fc->cyctimer(fc) >> 12) & 0x7fff;
1582                 cycle_match = fwohci_next_cycle(fc, cycle_now);
1583
1584                 OWRITE(sc, OHCI_ITCTL(dmach),
1585                                 OHCI_CNTL_CYCMATCH_S | (cycle_match << 16)
1586                                 | OHCI_CNTL_DMA_RUN);
1587 #else
1588                 OWRITE(sc, OHCI_ITCTL(dmach), OHCI_CNTL_DMA_RUN);
1589 #endif
1590                 if (firewire_debug) {
1591                         kprintf("cycle_match: 0x%04x->0x%04x\n",
1592                                                 cycle_now, cycle_match);
1593                         dump_dma(sc, ITX_CH + dmach);
1594                         dump_db(sc, ITX_CH + dmach);
1595                 }
1596         } else if ((stat & OHCI_CNTL_CYCMATCH_S) == 0) {
1597                 device_printf(sc->fc.dev,
1598                         "IT DMA underrun (0x%08x)\n", stat);
1599                 OWRITE(sc, OHCI_ITCTL(dmach), OHCI_CNTL_DMA_WAKE);
1600         }
1601 out:
1602         return err;
1603 }
1604
1605 static int
1606 fwohci_irx_enable(struct firewire_comm *fc, int dmach)
1607 {
1608         struct fwohci_softc *sc = (struct fwohci_softc *)fc;
1609         int err = 0, ldesc;
1610         unsigned short tag, ich;
1611         u_int32_t stat;
1612         struct fwohci_dbch *dbch;
1613         struct fwohcidb_tr *db_tr;
1614         struct fw_bulkxfer *first, *prev, *chunk;
1615         struct fw_xferq *ir;
1616
1617         dbch = &sc->ir[dmach];
1618         ir = &dbch->xferq;
1619
1620         if ((ir->flag & FWXFERQ_RUNNING) == 0) {
1621                 tag = (ir->flag >> 6) & 3;
1622                 ich = ir->flag & 0x3f;
1623                 OWRITE(sc, OHCI_IRMATCH(dmach), tagbit[tag] | ich);
1624
1625                 ir->queued = 0;
1626                 dbch->ndb = ir->bnpacket * ir->bnchunk;
1627                 dbch->ndesc = 2;
1628                 fwohci_db_init(sc, dbch);
1629                 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0)
1630                         return ENOMEM;
1631                 err = fwohci_rx_enable(sc, dbch);
1632         }
1633         if(err)
1634                 return err;
1635
1636         first = STAILQ_FIRST(&ir->stfree);
1637         if (first == NULL) {
1638                 device_printf(fc->dev, "IR DMA no free chunk\n");
1639                 return 0;
1640         }
1641
1642         ldesc = dbch->ndesc - 1;
1643         crit_enter();
1644         prev = STAILQ_LAST(&ir->stdma, fw_bulkxfer, link);
1645         while  ((chunk = STAILQ_FIRST(&ir->stfree)) != NULL) {
1646                 struct fwohcidb *db;
1647
1648 #if 1 /* XXX for if_fwe */
1649                 if (chunk->mbuf != NULL) {
1650                         db_tr = (struct fwohcidb_tr *)(chunk->start);
1651                         db_tr->dbcnt = 1;
1652                         err = bus_dmamap_load_mbuf(dbch->dmat, db_tr->dma_map,
1653                                         chunk->mbuf, fwohci_execute_db2, db_tr,
1654                                         /* flags */0);
1655                         FWOHCI_DMA_SET(db_tr->db[1].db.desc.cmd,
1656                                 OHCI_UPDATE | OHCI_INPUT_LAST |
1657                                 OHCI_INTERRUPT_ALWAYS | OHCI_BRANCH_ALWAYS);
1658                 }
1659 #endif
1660                 db = ((struct fwohcidb_tr *)(chunk->end))->db;
1661                 FWOHCI_DMA_WRITE(db[ldesc].db.desc.res, 0);
1662                 FWOHCI_DMA_CLEAR(db[ldesc].db.desc.depend, 0xf);
1663                 if (prev != NULL) {
1664                         db = ((struct fwohcidb_tr *)(prev->end))->db;
1665                         FWOHCI_DMA_SET(db[ldesc].db.desc.depend, dbch->ndesc);
1666                 }
1667                 STAILQ_REMOVE_HEAD(&ir->stfree, link);
1668                 STAILQ_INSERT_TAIL(&ir->stdma, chunk, link);
1669                 prev = chunk;
1670         }
1671         fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE);
1672         fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD);
1673         crit_exit();
1674         stat = OREAD(sc, OHCI_IRCTL(dmach));
1675         if (stat & OHCI_CNTL_DMA_ACTIVE)
1676                 return 0;
1677         if (stat & OHCI_CNTL_DMA_RUN) {
1678                 OWRITE(sc, OHCI_IRCTLCLR(dmach), OHCI_CNTL_DMA_RUN);
1679                 device_printf(sc->fc.dev, "IR DMA overrun (0x%08x)\n", stat);
1680         }
1681
1682         if (firewire_debug)
1683                 kprintf("start IR DMA 0x%x\n", stat);
1684         OWRITE(sc, OHCI_IR_MASKCLR, 1 << dmach);
1685         OWRITE(sc, OHCI_IR_STATCLR, 1 << dmach);
1686         OWRITE(sc, OHCI_IR_MASK, 1 << dmach);
1687         OWRITE(sc, OHCI_IRCTLCLR(dmach), 0xf0000000);
1688         OWRITE(sc, OHCI_IRCTL(dmach), OHCI_CNTL_ISOHDR);
1689         OWRITE(sc, OHCI_IRCMD(dmach),
1690                 ((struct fwohcidb_tr *)(first->start))->bus_addr
1691                                                         | dbch->ndesc);
1692         OWRITE(sc, OHCI_IRCTL(dmach), OHCI_CNTL_DMA_RUN);
1693         OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_DMA_IR);
1694 #if 0
1695         dump_db(sc, IRX_CH + dmach);
1696 #endif
1697         return err;
1698 }
1699
1700 int
1701 fwohci_stop(struct fwohci_softc *sc, device_t dev)
1702 {
1703         u_int i;
1704
1705 /* Now stopping all DMA channel */
1706         OWRITE(sc,  OHCI_ARQCTLCLR, OHCI_CNTL_DMA_RUN);
1707         OWRITE(sc,  OHCI_ARSCTLCLR, OHCI_CNTL_DMA_RUN);
1708         OWRITE(sc,  OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN);
1709         OWRITE(sc,  OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN);
1710
1711         for( i = 0 ; i < sc->fc.nisodma ; i ++ ){
1712                 OWRITE(sc,  OHCI_IRCTLCLR(i), OHCI_CNTL_DMA_RUN);
1713                 OWRITE(sc,  OHCI_ITCTLCLR(i), OHCI_CNTL_DMA_RUN);
1714         }
1715
1716 /* FLUSH FIFO and reset Transmitter/Reciever */
1717         OWRITE(sc,  OHCI_HCCCTL, OHCI_HCC_RESET);
1718
1719 /* Stop interrupt */
1720         OWRITE(sc, FWOHCI_INTMASKCLR,
1721                         OHCI_INT_EN | OHCI_INT_ERR | OHCI_INT_PHY_SID
1722                         | OHCI_INT_PHY_INT
1723                         | OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS 
1724                         | OHCI_INT_DMA_PRRQ | OHCI_INT_DMA_PRRS
1725                         | OHCI_INT_DMA_ARRQ | OHCI_INT_DMA_ARRS 
1726                         | OHCI_INT_PHY_BUS_R);
1727
1728         if (sc->fc.arq !=0 && sc->fc.arq->maxq > 0)
1729                 fw_drain_txq(&sc->fc);
1730
1731 /* XXX Link down?  Bus reset? */
1732         return 0;
1733 }
1734
1735 int
1736 fwohci_resume(struct fwohci_softc *sc, device_t dev)
1737 {
1738         int i;
1739         struct fw_xferq *ir;
1740         struct fw_bulkxfer *chunk;
1741
1742         fwohci_reset(sc, dev);
1743         /* XXX resume isochronus receive automatically. (how about TX?) */
1744         for(i = 0; i < sc->fc.nisodma; i ++) {
1745                 ir = &sc->ir[i].xferq;
1746                 if((ir->flag & FWXFERQ_RUNNING) != 0) {
1747                         device_printf(sc->fc.dev,
1748                                 "resume iso receive ch: %d\n", i);
1749                         ir->flag &= ~FWXFERQ_RUNNING;
1750                         /* requeue stdma to stfree */
1751                         while((chunk = STAILQ_FIRST(&ir->stdma)) != NULL) {
1752                                 STAILQ_REMOVE_HEAD(&ir->stdma, link);
1753                                 STAILQ_INSERT_TAIL(&ir->stfree, chunk, link);
1754                         }
1755                         sc->fc.irx_enable(&sc->fc, i);
1756                 }
1757         }
1758
1759         bus_generic_resume(dev);
1760         sc->fc.ibr(&sc->fc);
1761         return 0;
1762 }
1763
1764 #define ACK_ALL
1765 static void
1766 fwohci_intr_body(struct fwohci_softc *sc, u_int32_t stat, int count)
1767 {
1768         u_int32_t irstat, itstat;
1769         u_int i;
1770         struct firewire_comm *fc = (struct firewire_comm *)sc;
1771
1772 #ifdef OHCI_DEBUG
1773         if(stat & OREAD(sc, FWOHCI_INTMASK))
1774                 device_printf(fc->dev, "INTERRUPT < %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s> 0x%08x, 0x%08x\n",
1775                         stat & OHCI_INT_EN ? "DMA_EN ":"",
1776                         stat & OHCI_INT_PHY_REG ? "PHY_REG ":"",
1777                         stat & OHCI_INT_CYC_LONG ? "CYC_LONG ":"",
1778                         stat & OHCI_INT_ERR ? "INT_ERR ":"",
1779                         stat & OHCI_INT_CYC_ERR ? "CYC_ERR ":"",
1780                         stat & OHCI_INT_CYC_LOST ? "CYC_LOST ":"",
1781                         stat & OHCI_INT_CYC_64SECOND ? "CYC_64SECOND ":"",
1782                         stat & OHCI_INT_CYC_START ? "CYC_START ":"",
1783                         stat & OHCI_INT_PHY_INT ? "PHY_INT ":"",
1784                         stat & OHCI_INT_PHY_BUS_R ? "BUS_RESET ":"",
1785                         stat & OHCI_INT_PHY_SID ? "SID ":"",
1786                         stat & OHCI_INT_LR_ERR ? "DMA_LR_ERR ":"",
1787                         stat & OHCI_INT_PW_ERR ? "DMA_PW_ERR ":"",
1788                         stat & OHCI_INT_DMA_IR ? "DMA_IR ":"",
1789                         stat & OHCI_INT_DMA_IT  ? "DMA_IT " :"",
1790                         stat & OHCI_INT_DMA_PRRS  ? "DMA_PRRS " :"",
1791                         stat & OHCI_INT_DMA_PRRQ  ? "DMA_PRRQ " :"",
1792                         stat & OHCI_INT_DMA_ARRS  ? "DMA_ARRS " :"",
1793                         stat & OHCI_INT_DMA_ARRQ  ? "DMA_ARRQ " :"",
1794                         stat & OHCI_INT_DMA_ATRS  ? "DMA_ATRS " :"",
1795                         stat & OHCI_INT_DMA_ATRQ  ? "DMA_ATRQ " :"",
1796                         stat, OREAD(sc, FWOHCI_INTMASK) 
1797                 );
1798 #endif
1799 /* Bus reset */
1800         if(stat & OHCI_INT_PHY_BUS_R ){
1801                 if (fc->status == FWBUSRESET)
1802                         goto busresetout;
1803                 /* Disable bus reset interrupt until sid recv. */
1804                 OWRITE(sc, FWOHCI_INTMASKCLR,  OHCI_INT_PHY_BUS_R);
1805         
1806                 device_printf(fc->dev, "BUS reset\n");
1807                 OWRITE(sc, FWOHCI_INTMASKCLR,  OHCI_INT_CYC_LOST);
1808                 OWRITE(sc, OHCI_LNKCTLCLR, OHCI_CNTL_CYCSRC);
1809
1810                 OWRITE(sc,  OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN);
1811                 sc->atrq.xferq.flag &= ~FWXFERQ_RUNNING;
1812                 OWRITE(sc,  OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN);
1813                 sc->atrs.xferq.flag &= ~FWXFERQ_RUNNING;
1814
1815 #ifndef ACK_ALL
1816                 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PHY_BUS_R);
1817 #endif
1818                 fw_busreset(fc);
1819                 OWRITE(sc, OHCI_CROMHDR, ntohl(sc->fc.config_rom[0]));
1820                 OWRITE(sc, OHCI_BUS_OPT, ntohl(sc->fc.config_rom[2]));
1821         }
1822 busresetout:
1823         if((stat & OHCI_INT_DMA_IR )){
1824 #ifndef ACK_ALL
1825                 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_IR);
1826 #endif
1827 #if defined(__DragonFly__) || __FreeBSD_version < 500000
1828                 irstat = sc->irstat;
1829                 sc->irstat = 0;
1830 #else
1831                 irstat = atomic_readandclear_int(&sc->irstat);
1832 #endif
1833                 for(i = 0; i < fc->nisodma ; i++){
1834                         struct fwohci_dbch *dbch;
1835
1836                         if((irstat & (1 << i)) != 0){
1837                                 dbch = &sc->ir[i];
1838                                 if ((dbch->xferq.flag & FWXFERQ_OPEN) == 0) {
1839                                         device_printf(sc->fc.dev,
1840                                                 "dma(%d) not active\n", i);
1841                                         continue;
1842                                 }
1843                                 fwohci_rbuf_update(sc, i);
1844                         }
1845                 }
1846         }
1847         if((stat & OHCI_INT_DMA_IT )){
1848 #ifndef ACK_ALL
1849                 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_IT);
1850 #endif
1851 #if defined(__DragonFly__) || __FreeBSD_version < 500000
1852                 itstat = sc->itstat;
1853                 sc->itstat = 0;
1854 #else
1855                 itstat = atomic_readandclear_int(&sc->itstat);
1856 #endif
1857                 for(i = 0; i < fc->nisodma ; i++){
1858                         if((itstat & (1 << i)) != 0){
1859                                 fwohci_tbuf_update(sc, i);
1860                         }
1861                 }
1862         }
1863         if((stat & OHCI_INT_DMA_PRRS )){
1864 #ifndef ACK_ALL
1865                 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_PRRS);
1866 #endif
1867 #if 0
1868                 dump_dma(sc, ARRS_CH);
1869                 dump_db(sc, ARRS_CH);
1870 #endif
1871                 fwohci_arcv(sc, &sc->arrs, count);
1872         }
1873         if((stat & OHCI_INT_DMA_PRRQ )){
1874 #ifndef ACK_ALL
1875                 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_PRRQ);
1876 #endif
1877 #if 0
1878                 dump_dma(sc, ARRQ_CH);
1879                 dump_db(sc, ARRQ_CH);
1880 #endif
1881                 fwohci_arcv(sc, &sc->arrq, count);
1882         }
1883         if(stat & OHCI_INT_PHY_SID){
1884                 u_int32_t *buf, node_id;
1885                 int plen;
1886
1887 #ifndef ACK_ALL
1888                 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PHY_SID);
1889 #endif
1890                 /* Enable bus reset interrupt */
1891                 OWRITE(sc, FWOHCI_INTMASK,  OHCI_INT_PHY_BUS_R);
1892                 /* Allow async. request to us */
1893                 OWRITE(sc, OHCI_AREQHI, 1 << 31);
1894                 /* XXX insecure ?? */
1895                 OWRITE(sc, OHCI_PREQHI, 0x7fffffff);
1896                 OWRITE(sc, OHCI_PREQLO, 0xffffffff);
1897                 OWRITE(sc, OHCI_PREQUPPER, 0x10000);
1898                 /* Set ATRetries register */
1899                 OWRITE(sc, OHCI_ATRETRY, 1<<(13+16) | 0xfff);
1900 /*
1901 ** Checking whether the node is root or not. If root, turn on 
1902 ** cycle master.
1903 */
1904                 node_id = OREAD(sc, FWOHCI_NODEID);
1905                 plen = OREAD(sc, OHCI_SID_CNT);
1906
1907                 device_printf(fc->dev, "node_id=0x%08x, gen=%d, ",
1908                         node_id, (plen >> 16) & 0xff);
1909                 if (!(node_id & OHCI_NODE_VALID)) {
1910                         kprintf("Bus reset failure\n");
1911                         goto sidout;
1912                 }
1913                 if (node_id & OHCI_NODE_ROOT) {
1914                         kprintf("CYCLEMASTER mode\n");
1915                         OWRITE(sc, OHCI_LNKCTL,
1916                                 OHCI_CNTL_CYCMTR | OHCI_CNTL_CYCTIMER);
1917                 } else {
1918                         kprintf("non CYCLEMASTER mode\n");
1919                         OWRITE(sc, OHCI_LNKCTLCLR, OHCI_CNTL_CYCMTR);
1920                         OWRITE(sc, OHCI_LNKCTL, OHCI_CNTL_CYCTIMER);
1921                 }
1922                 fc->nodeid = node_id & 0x3f;
1923
1924                 if (plen & OHCI_SID_ERR) {
1925                         device_printf(fc->dev, "SID Error\n");
1926                         goto sidout;
1927                 }
1928                 plen &= OHCI_SID_CNT_MASK;
1929                 if (plen < 4 || plen > OHCI_SIDSIZE) {
1930                         device_printf(fc->dev, "invalid SID len = %d\n", plen);
1931                         goto sidout;
1932                 }
1933                 plen -= 4; /* chop control info */
1934                 buf = (u_int32_t *)kmalloc(OHCI_SIDSIZE, M_FW, M_INTWAIT);
1935                 if (buf == NULL) {
1936                         device_printf(fc->dev, "malloc failed\n");
1937                         goto sidout;
1938                 }
1939                 for (i = 0; i < plen / 4; i ++)
1940                         buf[i] = FWOHCI_DMA_READ(sc->sid_buf[i+1]);
1941 #if 1
1942                 /* pending all pre-bus_reset packets */
1943                 fwohci_txd(sc, &sc->atrq);
1944                 fwohci_txd(sc, &sc->atrs);
1945                 fwohci_arcv(sc, &sc->arrs, -1);
1946                 fwohci_arcv(sc, &sc->arrq, -1);
1947                 fw_drain_txq(fc);
1948 #endif
1949                 fw_sidrcv(fc, buf, plen);
1950                 kfree(buf, M_FW);
1951         }
1952 sidout:
1953         if((stat & OHCI_INT_DMA_ATRQ )){
1954 #ifndef ACK_ALL
1955                 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_ATRQ);
1956 #endif
1957                 fwohci_txd(sc, &(sc->atrq));
1958         }
1959         if((stat & OHCI_INT_DMA_ATRS )){
1960 #ifndef ACK_ALL
1961                 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_ATRS);
1962 #endif
1963                 fwohci_txd(sc, &(sc->atrs));
1964         }
1965         if((stat & OHCI_INT_PW_ERR )){
1966 #ifndef ACK_ALL
1967                 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PW_ERR);
1968 #endif
1969                 /* permanently mask unsupported interrupt source */
1970                 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_PW_ERR);
1971                 device_printf(fc->dev, "posted write error\n");
1972         }
1973         if((stat & OHCI_INT_ERR )){
1974 #ifndef ACK_ALL
1975                 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_ERR);
1976 #endif
1977                 /* permanently mask unsupported interrupt source */
1978                 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_ERR);
1979                 device_printf(fc->dev, "unrecoverable error\n");
1980         }
1981         if((stat & OHCI_INT_PHY_INT)) {
1982 #ifndef ACK_ALL
1983                 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PHY_INT);
1984 #endif
1985                 /* permanently mask unsupported interrupt source */
1986                 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_PHY_INT);
1987                 /*device_printf(fc->dev, "phy int\n");*/
1988         }
1989
1990         return;
1991 }
1992
1993 #if FWOHCI_TASKQUEUE
1994 static void
1995 fwohci_complete(void *arg, int pending)
1996 {
1997         struct fwohci_softc *sc = (struct fwohci_softc *)arg;
1998         u_int32_t stat;
1999
2000 again:
2001         stat = atomic_readandclear_int(&sc->intstat);
2002         if (stat)
2003                 fwohci_intr_body(sc, stat, -1);
2004         else
2005                 return;
2006         goto again;
2007 }
2008 #endif
2009
2010 static u_int32_t
2011 fwochi_check_stat(struct fwohci_softc *sc)
2012 {
2013         u_int32_t stat, irstat, itstat;
2014
2015         stat = OREAD(sc, FWOHCI_INTSTAT);
2016         if (stat == 0xffffffff) {
2017                 device_printf(sc->fc.dev, 
2018                         "device physically ejected?\n");
2019                 return(stat);
2020         }
2021 #ifdef ACK_ALL
2022         if (stat)
2023                 OWRITE(sc, FWOHCI_INTSTATCLR, stat);
2024 #endif
2025         if (stat & OHCI_INT_DMA_IR) {
2026                 irstat = OREAD(sc, OHCI_IR_STAT);
2027                 OWRITE(sc, OHCI_IR_STATCLR, irstat);
2028                 atomic_set_int(&sc->irstat, irstat);
2029         }
2030         if (stat & OHCI_INT_DMA_IT) {
2031                 itstat = OREAD(sc, OHCI_IT_STAT);
2032                 OWRITE(sc, OHCI_IT_STATCLR, itstat);
2033                 atomic_set_int(&sc->itstat, itstat);
2034         }
2035         return(stat);
2036 }
2037
2038 void
2039 fwohci_intr(void *arg)
2040 {
2041         struct fwohci_softc *sc = (struct fwohci_softc *)arg;
2042         u_int32_t stat;
2043 #if !FWOHCI_TASKQUEUE
2044         u_int32_t bus_reset = 0;
2045 #endif
2046
2047         if (!(sc->intmask & OHCI_INT_EN)) {
2048                 /* polling mode */
2049                 return;
2050         }
2051
2052 #if !FWOHCI_TASKQUEUE
2053 again:
2054 #endif
2055         stat = fwochi_check_stat(sc);
2056         if (stat == 0 || stat == 0xffffffff)
2057                 return;
2058 #if FWOHCI_TASKQUEUE
2059         atomic_set_int(&sc->intstat, stat);
2060         /* XXX mask bus reset intr. during bus reset phase */
2061         if (stat)
2062                 taskqueue_enqueue(taskqueue_swi_giant, &sc->fwohci_task_complete);
2063 #else
2064         /* We cannot clear bus reset event during bus reset phase */
2065         if ((stat & ~bus_reset) == 0)
2066                 return;
2067         bus_reset = stat & OHCI_INT_PHY_BUS_R;
2068         fwohci_intr_body(sc, stat, -1);
2069         goto again;
2070 #endif
2071 }
2072
2073 void
2074 fwohci_poll(struct firewire_comm *fc, int quick, int count)
2075 {
2076         u_int32_t stat;
2077         struct fwohci_softc *sc;
2078
2079
2080         sc = (struct fwohci_softc *)fc;
2081         stat = OHCI_INT_DMA_IR | OHCI_INT_DMA_IT |
2082                 OHCI_INT_DMA_PRRS | OHCI_INT_DMA_PRRQ |
2083                 OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS;
2084 #if 0
2085         if (!quick) {
2086 #else
2087         if (1) {
2088 #endif
2089                 stat = fwochi_check_stat(sc);
2090                 if (stat == 0 || stat == 0xffffffff)
2091                         return;
2092         }
2093         crit_enter();
2094         fwohci_intr_body(sc, stat, count);
2095         crit_exit();
2096 }
2097
2098 static void
2099 fwohci_set_intr(struct firewire_comm *fc, int enable)
2100 {
2101         struct fwohci_softc *sc;
2102
2103         sc = (struct fwohci_softc *)fc;
2104         if (bootverbose)
2105                 device_printf(sc->fc.dev, "fwohci_set_intr: %d\n", enable);
2106         if (enable) {
2107                 sc->intmask |= OHCI_INT_EN;
2108                 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_EN);
2109         } else {
2110                 sc->intmask &= ~OHCI_INT_EN;
2111                 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_EN);
2112         }
2113 }
2114
2115 static void
2116 fwohci_tbuf_update(struct fwohci_softc *sc, int dmach)
2117 {
2118         struct firewire_comm *fc = &sc->fc;
2119         struct fwohcidb *db;
2120         struct fw_bulkxfer *chunk;
2121         struct fw_xferq *it;
2122         u_int32_t stat, count;
2123         int w=0, ldesc;
2124
2125         it = fc->it[dmach];
2126         ldesc = sc->it[dmach].ndesc - 1;
2127         crit_enter();   /* unnecessary? */
2128         fwdma_sync_multiseg_all(sc->it[dmach].am, BUS_DMASYNC_POSTREAD);
2129         if (firewire_debug)
2130                 dump_db(sc, ITX_CH + dmach);
2131         while ((chunk = STAILQ_FIRST(&it->stdma)) != NULL) {
2132                 db = ((struct fwohcidb_tr *)(chunk->end))->db;
2133                 stat = FWOHCI_DMA_READ(db[ldesc].db.desc.res) 
2134                                 >> OHCI_STATUS_SHIFT;
2135                 db = ((struct fwohcidb_tr *)(chunk->start))->db;
2136                 /* timestamp */
2137                 count = FWOHCI_DMA_READ(db[ldesc].db.desc.res)
2138                                 & OHCI_COUNT_MASK;
2139                 if (stat == 0)
2140                         break;
2141                 STAILQ_REMOVE_HEAD(&it->stdma, link);
2142                 switch (stat & FWOHCIEV_MASK){
2143                 case FWOHCIEV_ACKCOMPL:
2144 #if 0
2145                         device_printf(fc->dev, "0x%08x\n", count);
2146 #endif
2147                         break;
2148                 default:
2149                         device_printf(fc->dev,
2150                                 "Isochronous transmit err %02x(%s)\n",
2151                                         stat, fwohcicode[stat & 0x1f]);
2152                 }
2153                 STAILQ_INSERT_TAIL(&it->stfree, chunk, link);
2154                 w++;
2155         }
2156         crit_exit();
2157         if (w)
2158                 wakeup(it);
2159 }
2160
2161 static void
2162 fwohci_rbuf_update(struct fwohci_softc *sc, int dmach)
2163 {
2164         struct firewire_comm *fc = &sc->fc;
2165         struct fwohcidb_tr *db_tr;
2166         struct fw_bulkxfer *chunk;
2167         struct fw_xferq *ir;
2168         u_int32_t stat;
2169         int w=0, ldesc;
2170
2171         ir = fc->ir[dmach];
2172         ldesc = sc->ir[dmach].ndesc - 1;
2173 #if 0
2174         dump_db(sc, dmach);
2175 #endif
2176         crit_enter();
2177         fwdma_sync_multiseg_all(sc->ir[dmach].am, BUS_DMASYNC_POSTREAD);
2178         while ((chunk = STAILQ_FIRST(&ir->stdma)) != NULL) {
2179                 db_tr = (struct fwohcidb_tr *)chunk->end;
2180                 stat = FWOHCI_DMA_READ(db_tr->db[ldesc].db.desc.res)
2181                                 >> OHCI_STATUS_SHIFT;
2182                 if (stat == 0)
2183                         break;
2184
2185                 if (chunk->mbuf != NULL) {
2186                         bus_dmamap_sync(sc->ir[dmach].dmat, db_tr->dma_map,
2187                                                 BUS_DMASYNC_POSTREAD);
2188                         bus_dmamap_unload(sc->ir[dmach].dmat, db_tr->dma_map);
2189                 } else if (ir->buf != NULL) {
2190                         fwdma_sync_multiseg(ir->buf, chunk->poffset,
2191                                 ir->bnpacket, BUS_DMASYNC_POSTREAD);
2192                 } else {
2193                         /* XXX */
2194                         kprintf("fwohci_rbuf_update: this shouldn't happen\n");
2195                 }
2196
2197                 STAILQ_REMOVE_HEAD(&ir->stdma, link);
2198                 STAILQ_INSERT_TAIL(&ir->stvalid, chunk, link);
2199                 switch (stat & FWOHCIEV_MASK) {
2200                 case FWOHCIEV_ACKCOMPL:
2201                         chunk->resp = 0;
2202                         break;
2203                 default:
2204                         chunk->resp = EINVAL;
2205                         device_printf(fc->dev,
2206                                 "Isochronous receive err %02x(%s)\n",
2207                                         stat, fwohcicode[stat & 0x1f]);
2208                 }
2209                 w++;
2210         }
2211         crit_exit();
2212         if (w) {
2213                 if (ir->flag & FWXFERQ_HANDLER) 
2214                         ir->hand(ir);
2215                 else
2216                         wakeup(ir);
2217         }
2218 }
2219
2220 void
2221 dump_dma(struct fwohci_softc *sc, u_int32_t ch)
2222 {
2223         u_int32_t off, cntl, stat, cmd, match;
2224
2225         if(ch == 0){
2226                 off = OHCI_ATQOFF;
2227         }else if(ch == 1){
2228                 off = OHCI_ATSOFF;
2229         }else if(ch == 2){
2230                 off = OHCI_ARQOFF;
2231         }else if(ch == 3){
2232                 off = OHCI_ARSOFF;
2233         }else if(ch < IRX_CH){
2234                 off = OHCI_ITCTL(ch - ITX_CH);
2235         }else{
2236                 off = OHCI_IRCTL(ch - IRX_CH);
2237         }
2238         cntl = stat = OREAD(sc, off);
2239         cmd = OREAD(sc, off + 0xc);
2240         match = OREAD(sc, off + 0x10);
2241
2242         device_printf(sc->fc.dev, "ch %1x cntl:0x%08x cmd:0x%08x match:0x%08x\n",
2243                 ch,
2244                 cntl, 
2245                 cmd, 
2246                 match);
2247         stat &= 0xffff ;
2248         if (stat) {
2249                 device_printf(sc->fc.dev, "dma %d ch:%s%s%s%s%s%s %s(%x)\n",
2250                         ch,
2251                         stat & OHCI_CNTL_DMA_RUN ? "RUN," : "",
2252                         stat & OHCI_CNTL_DMA_WAKE ? "WAKE," : "",
2253                         stat & OHCI_CNTL_DMA_DEAD ? "DEAD," : "",
2254                         stat & OHCI_CNTL_DMA_ACTIVE ? "ACTIVE," : "",
2255                         stat & OHCI_CNTL_DMA_BT ? "BRANCH," : "",
2256                         stat & OHCI_CNTL_DMA_BAD ? "BADDMA," : "",
2257                         fwohcicode[stat & 0x1f],
2258                         stat & 0x1f
2259                 );
2260         }else{
2261                 device_printf(sc->fc.dev, "dma %d ch: Nostat\n", ch);
2262         }
2263 }
2264
2265 void
2266 dump_db(struct fwohci_softc *sc, u_int32_t ch)
2267 {
2268         struct fwohci_dbch *dbch;
2269         struct fwohcidb_tr *cp = NULL, *pp, *np = NULL;
2270         struct fwohcidb *curr = NULL, *prev, *next = NULL;
2271         int idb, jdb;
2272         u_int32_t cmd, off;
2273         if(ch == 0){
2274                 off = OHCI_ATQOFF;
2275                 dbch = &sc->atrq;
2276         }else if(ch == 1){
2277                 off = OHCI_ATSOFF;
2278                 dbch = &sc->atrs;
2279         }else if(ch == 2){
2280                 off = OHCI_ARQOFF;
2281                 dbch = &sc->arrq;
2282         }else if(ch == 3){
2283                 off = OHCI_ARSOFF;
2284                 dbch = &sc->arrs;
2285         }else if(ch < IRX_CH){
2286                 off = OHCI_ITCTL(ch - ITX_CH);
2287                 dbch = &sc->it[ch - ITX_CH];
2288         }else {
2289                 off = OHCI_IRCTL(ch - IRX_CH);
2290                 dbch = &sc->ir[ch - IRX_CH];
2291         }
2292         cmd = OREAD(sc, off + 0xc);
2293
2294         if( dbch->ndb == 0 ){
2295                 device_printf(sc->fc.dev, "No DB is attached ch=%d\n", ch);
2296                 return;
2297         }
2298         pp = dbch->top;
2299         prev = pp->db;
2300         for(idb = 0 ; idb < dbch->ndb ; idb ++ ){
2301                 if(pp == NULL){
2302                         curr = NULL;
2303                         goto outdb;
2304                 }
2305                 cp = STAILQ_NEXT(pp, link);
2306                 if(cp == NULL){
2307                         curr = NULL;
2308                         goto outdb;
2309                 }
2310                 np = STAILQ_NEXT(cp, link);
2311                 for(jdb = 0 ; jdb < dbch->ndesc ; jdb ++ ){
2312                         if ((cmd  & 0xfffffff0) == cp->bus_addr) {
2313                                 curr = cp->db;
2314                                 if(np != NULL){
2315                                         next = np->db;
2316                                 }else{
2317                                         next = NULL;
2318                                 }
2319                                 goto outdb;
2320                         }
2321                 }
2322                 pp = STAILQ_NEXT(pp, link);
2323                 prev = pp->db;
2324         }
2325 outdb:
2326         if( curr != NULL){
2327 #if 0
2328                 kprintf("Prev DB %d\n", ch);
2329                 print_db(pp, prev, ch, dbch->ndesc);
2330 #endif
2331                 kprintf("Current DB %d\n", ch);
2332                 print_db(cp, curr, ch, dbch->ndesc);
2333 #if 0
2334                 kprintf("Next DB %d\n", ch);
2335                 print_db(np, next, ch, dbch->ndesc);
2336 #endif
2337         }else{
2338                 kprintf("dbdump err ch = %d cmd = 0x%08x\n", ch, cmd);
2339         }
2340         return;
2341 }
2342
2343 void
2344 print_db(struct fwohcidb_tr *db_tr, struct fwohcidb *db,
2345                 u_int32_t ch, u_int32_t max)
2346 {
2347         fwohcireg_t stat;
2348         int i, key;
2349         u_int32_t cmd, res;
2350
2351         if(db == NULL){
2352                 kprintf("No Descriptor is found\n");
2353                 return;
2354         }
2355
2356         kprintf("ch = %d\n%8s %s %s %s %s %4s %8s %8s %4s:%4s\n",
2357                 ch,
2358                 "Current",
2359                 "OP  ",
2360                 "KEY",
2361                 "INT",
2362                 "BR ",
2363                 "len",
2364                 "Addr",
2365                 "Depend",
2366                 "Stat",
2367                 "Cnt");
2368         for( i = 0 ; i <= max ; i ++){
2369                 cmd = FWOHCI_DMA_READ(db[i].db.desc.cmd);
2370                 res = FWOHCI_DMA_READ(db[i].db.desc.res);
2371                 key = cmd & OHCI_KEY_MASK;
2372                 stat = res >> OHCI_STATUS_SHIFT;
2373 #if defined(__DragonFly__) || __FreeBSD_version < 500000
2374                 kprintf("%08x %s %s %s %s %5d %08x %08x %04x:%04x",
2375                                 db_tr->bus_addr,
2376 #else
2377                 kprintf("%08jx %s %s %s %s %5d %08x %08x %04x:%04x",
2378                                 (uintmax_t)db_tr->bus_addr,
2379 #endif
2380                                 dbcode[(cmd >> 28) & 0xf],
2381                                 dbkey[(cmd >> 24) & 0x7],
2382                                 dbcond[(cmd >> 20) & 0x3],
2383                                 dbcond[(cmd >> 18) & 0x3],
2384                                 cmd & OHCI_COUNT_MASK,
2385                                 FWOHCI_DMA_READ(db[i].db.desc.addr),
2386                                 FWOHCI_DMA_READ(db[i].db.desc.depend),
2387                                 stat,
2388                                 res & OHCI_COUNT_MASK);
2389                 if(stat & 0xff00){
2390                         kprintf(" %s%s%s%s%s%s %s(%x)\n",
2391                                 stat & OHCI_CNTL_DMA_RUN ? "RUN," : "",
2392                                 stat & OHCI_CNTL_DMA_WAKE ? "WAKE," : "",
2393                                 stat & OHCI_CNTL_DMA_DEAD ? "DEAD," : "",
2394                                 stat & OHCI_CNTL_DMA_ACTIVE ? "ACTIVE," : "",
2395                                 stat & OHCI_CNTL_DMA_BT ? "BRANCH," : "",
2396                                 stat & OHCI_CNTL_DMA_BAD ? "BADDMA," : "",
2397                                 fwohcicode[stat & 0x1f],
2398                                 stat & 0x1f
2399                         );
2400                 }else{
2401                         kprintf(" Nostat\n");
2402                 }
2403                 if(key == OHCI_KEY_ST2 ){
2404                         kprintf("0x%08x 0x%08x 0x%08x 0x%08x\n", 
2405                                 FWOHCI_DMA_READ(db[i+1].db.immed[0]),
2406                                 FWOHCI_DMA_READ(db[i+1].db.immed[1]),
2407                                 FWOHCI_DMA_READ(db[i+1].db.immed[2]),
2408                                 FWOHCI_DMA_READ(db[i+1].db.immed[3]));
2409                 }
2410                 if(key == OHCI_KEY_DEVICE){
2411                         return;
2412                 }
2413                 if((cmd & OHCI_BRANCH_MASK) 
2414                                 == OHCI_BRANCH_ALWAYS){
2415                         return;
2416                 }
2417                 if((cmd & OHCI_CMD_MASK) 
2418                                 == OHCI_OUTPUT_LAST){
2419                         return;
2420                 }
2421                 if((cmd & OHCI_CMD_MASK) 
2422                                 == OHCI_INPUT_LAST){
2423                         return;
2424                 }
2425                 if(key == OHCI_KEY_ST2 ){
2426                         i++;
2427                 }
2428         }
2429         return;
2430 }
2431
2432 void
2433 fwohci_ibr(struct firewire_comm *fc)
2434 {
2435         struct fwohci_softc *sc;
2436         u_int32_t fun;
2437
2438         device_printf(fc->dev, "Initiate bus reset\n");
2439         sc = (struct fwohci_softc *)fc;
2440
2441         /*
2442          * Set root hold-off bit so that non cyclemaster capable node
2443          * shouldn't became the root node.
2444          */
2445 #if 1
2446         fun = fwphy_rddata(sc, FW_PHY_IBR_REG);
2447         fun |= FW_PHY_IBR | FW_PHY_RHB;
2448         fun = fwphy_wrdata(sc, FW_PHY_IBR_REG, fun);
2449 #else   /* Short bus reset */
2450         fun = fwphy_rddata(sc, FW_PHY_ISBR_REG);
2451         fun |= FW_PHY_ISBR | FW_PHY_RHB;
2452         fun = fwphy_wrdata(sc, FW_PHY_ISBR_REG, fun);
2453 #endif
2454 }
2455
2456 void
2457 fwohci_txbufdb(struct fwohci_softc *sc, int dmach, struct fw_bulkxfer *bulkxfer)
2458 {
2459         struct fwohcidb_tr *db_tr, *fdb_tr;
2460         struct fwohci_dbch *dbch;
2461         struct fwohcidb *db;
2462         struct fw_pkt *fp;
2463         struct fwohci_txpkthdr *ohcifp;
2464         unsigned short chtag;
2465         int idb;
2466
2467         dbch = &sc->it[dmach];
2468         chtag = sc->it[dmach].xferq.flag & 0xff;
2469
2470         db_tr = (struct fwohcidb_tr *)(bulkxfer->start);
2471         fdb_tr = (struct fwohcidb_tr *)(bulkxfer->end);
2472 /*
2473 device_printf(sc->fc.dev, "DB %08x %08x %08x\n", bulkxfer, db_tr->bus_addr, fdb_tr->bus_addr);
2474 */
2475         for (idb = 0; idb < dbch->xferq.bnpacket; idb ++) {
2476                 db = db_tr->db;
2477                 fp = (struct fw_pkt *)db_tr->buf;
2478                 ohcifp = (struct fwohci_txpkthdr *) db[1].db.immed;
2479                 ohcifp->mode.ld[0] = fp->mode.ld[0];
2480                 ohcifp->mode.common.spd = 0 & 0x7;
2481                 ohcifp->mode.stream.len = fp->mode.stream.len;
2482                 ohcifp->mode.stream.chtag = chtag;
2483                 ohcifp->mode.stream.tcode = 0xa;
2484 #if BYTE_ORDER == BIG_ENDIAN
2485                 FWOHCI_DMA_WRITE(db[1].db.immed[0], db[1].db.immed[0]); 
2486                 FWOHCI_DMA_WRITE(db[1].db.immed[1], db[1].db.immed[1]); 
2487 #endif
2488
2489                 FWOHCI_DMA_CLEAR(db[2].db.desc.cmd, OHCI_COUNT_MASK);
2490                 FWOHCI_DMA_SET(db[2].db.desc.cmd, fp->mode.stream.len);
2491                 FWOHCI_DMA_WRITE(db[2].db.desc.res, 0);
2492 #if 0 /* if bulkxfer->npackets changes */
2493                 db[2].db.desc.cmd = OHCI_OUTPUT_LAST
2494                         | OHCI_UPDATE
2495                         | OHCI_BRANCH_ALWAYS;
2496                 db[0].db.desc.depend =
2497                         = db[dbch->ndesc - 1].db.desc.depend
2498                         = STAILQ_NEXT(db_tr, link)->bus_addr | dbch->ndesc;
2499 #else
2500                 FWOHCI_DMA_SET(db[0].db.desc.depend, dbch->ndesc);
2501                 FWOHCI_DMA_SET(db[dbch->ndesc - 1].db.desc.depend, dbch->ndesc);
2502 #endif
2503                 bulkxfer->end = (caddr_t)db_tr;
2504                 db_tr = STAILQ_NEXT(db_tr, link);
2505         }
2506         db = ((struct fwohcidb_tr *)bulkxfer->end)->db;
2507         FWOHCI_DMA_CLEAR(db[0].db.desc.depend, 0xf);
2508         FWOHCI_DMA_CLEAR(db[dbch->ndesc - 1].db.desc.depend, 0xf);
2509 #if 0 /* if bulkxfer->npackets changes */
2510         db[dbch->ndesc - 1].db.desc.control |= OHCI_INTERRUPT_ALWAYS;
2511         /* OHCI 1.1 and above */
2512         db[0].db.desc.control |= OHCI_INTERRUPT_ALWAYS;
2513 #endif
2514 /*
2515         db_tr = (struct fwohcidb_tr *)bulkxfer->start;
2516         fdb_tr = (struct fwohcidb_tr *)bulkxfer->end;
2517 device_printf(sc->fc.dev, "DB %08x %3d %08x %08x\n", bulkxfer, bulkxfer->npacket, db_tr->bus_addr, fdb_tr->bus_addr);
2518 */
2519         return;
2520 }
2521
2522 static int
2523 fwohci_add_tx_buf(struct fwohci_dbch *dbch, struct fwohcidb_tr *db_tr,
2524                                                                 int poffset)
2525 {
2526         struct fwohcidb *db = db_tr->db;
2527         struct fw_xferq *it;
2528         int err = 0;
2529
2530         it = &dbch->xferq;
2531         if(it->buf == 0){
2532                 err = EINVAL;
2533                 return err;
2534         }
2535         db_tr->buf = fwdma_v_addr(it->buf, poffset);
2536         db_tr->dbcnt = 3;
2537
2538         FWOHCI_DMA_WRITE(db[0].db.desc.cmd,
2539                 OHCI_OUTPUT_MORE | OHCI_KEY_ST2 | 8);
2540         FWOHCI_DMA_WRITE(db[0].db.desc.addr, 0);
2541         bzero((void *)&db[1].db.immed[0], sizeof(db[1].db.immed));
2542         FWOHCI_DMA_WRITE(db[2].db.desc.addr,
2543         fwdma_bus_addr(it->buf, poffset) + sizeof(u_int32_t));
2544
2545         FWOHCI_DMA_WRITE(db[2].db.desc.cmd,
2546                 OHCI_OUTPUT_LAST | OHCI_UPDATE | OHCI_BRANCH_ALWAYS);
2547 #if 1
2548         FWOHCI_DMA_WRITE(db[0].db.desc.res, 0);
2549         FWOHCI_DMA_WRITE(db[2].db.desc.res, 0);
2550 #endif
2551         return 0;
2552 }
2553
2554 int
2555 fwohci_add_rx_buf(struct fwohci_dbch *dbch, struct fwohcidb_tr *db_tr,
2556                 int poffset, struct fwdma_alloc *dummy_dma)
2557 {
2558         struct fwohcidb *db = db_tr->db;
2559         struct fw_xferq *ir;
2560         int i, ldesc;
2561         bus_addr_t dbuf[2];
2562         int dsiz[2];
2563
2564         ir = &dbch->xferq;
2565         if (ir->buf == NULL && (dbch->xferq.flag & FWXFERQ_EXTBUF) == 0) {
2566                 db_tr->buf = fwdma_malloc_size(dbch->dmat, &db_tr->dma_map,
2567                         ir->psize, &dbuf[0], BUS_DMA_NOWAIT);
2568                 if (db_tr->buf == NULL)
2569                         return(ENOMEM);
2570                 db_tr->dbcnt = 1;
2571                 dsiz[0] = ir->psize;
2572                 bus_dmamap_sync(dbch->dmat, db_tr->dma_map,
2573                         BUS_DMASYNC_PREREAD);
2574         } else {
2575                 db_tr->dbcnt = 0;
2576                 if (dummy_dma != NULL) {
2577                         dsiz[db_tr->dbcnt] = sizeof(u_int32_t);
2578                         dbuf[db_tr->dbcnt++] = dummy_dma->bus_addr;
2579                 }
2580                 dsiz[db_tr->dbcnt] = ir->psize;
2581                 if (ir->buf != NULL) {
2582                         db_tr->buf = fwdma_v_addr(ir->buf, poffset);
2583                         dbuf[db_tr->dbcnt] = fwdma_bus_addr( ir->buf, poffset);
2584                 }
2585                 db_tr->dbcnt++;
2586         }
2587         for(i = 0 ; i < db_tr->dbcnt ; i++){
2588                 FWOHCI_DMA_WRITE(db[i].db.desc.addr, dbuf[i]);
2589                 FWOHCI_DMA_WRITE(db[i].db.desc.cmd, OHCI_INPUT_MORE | dsiz[i]);
2590                 if (ir->flag & FWXFERQ_STREAM) {
2591                         FWOHCI_DMA_SET(db[i].db.desc.cmd, OHCI_UPDATE);
2592                 }
2593                 FWOHCI_DMA_WRITE(db[i].db.desc.res, dsiz[i]);
2594         }
2595         ldesc = db_tr->dbcnt - 1;
2596         if (ir->flag & FWXFERQ_STREAM) {
2597                 FWOHCI_DMA_SET(db[ldesc].db.desc.cmd, OHCI_INPUT_LAST);
2598         }
2599         FWOHCI_DMA_SET(db[ldesc].db.desc.cmd, OHCI_BRANCH_ALWAYS);
2600         return 0;
2601 }
2602
2603
2604 static int
2605 fwohci_arcv_swap(struct fw_pkt *fp, int len)
2606 {
2607         struct fw_pkt *fp0;
2608         u_int32_t ld0;
2609         int slen, hlen;
2610 #if BYTE_ORDER == BIG_ENDIAN
2611         int i;
2612 #endif
2613
2614         ld0 = FWOHCI_DMA_READ(fp->mode.ld[0]);
2615 #if 0
2616         kprintf("ld0: x%08x\n", ld0);
2617 #endif
2618         fp0 = (struct fw_pkt *)&ld0;
2619         /* determine length to swap */
2620         switch (fp0->mode.common.tcode) {
2621         case FWTCODE_RREQQ:
2622         case FWTCODE_WRES:
2623         case FWTCODE_WREQQ:
2624         case FWTCODE_RRESQ:
2625         case FWOHCITCODE_PHY:
2626                 slen = 12;
2627                 break;
2628         case FWTCODE_RREQB:
2629         case FWTCODE_WREQB:
2630         case FWTCODE_LREQ:
2631         case FWTCODE_RRESB:
2632         case FWTCODE_LRES:
2633                 slen = 16;
2634                 break;
2635         default:
2636                 kprintf("Unknown tcode %d\n", fp0->mode.common.tcode);
2637                 return(0);
2638         }
2639         hlen = tinfo[fp0->mode.common.tcode].hdr_len;
2640         if (hlen > len) {
2641                 if (firewire_debug)
2642                         kprintf("splitted header\n");
2643                 return(-hlen);
2644         }
2645 #if BYTE_ORDER == BIG_ENDIAN
2646         for(i = 0; i < slen/4; i ++)
2647                 fp->mode.ld[i] = FWOHCI_DMA_READ(fp->mode.ld[i]);
2648 #endif
2649         return(hlen);
2650 }
2651
2652 static int
2653 fwohci_get_plen(struct fwohci_softc *sc, struct fwohci_dbch *dbch, struct fw_pkt *fp)
2654 {
2655         struct tcode_info *info;
2656         int r;
2657
2658         info = &tinfo[fp->mode.common.tcode];
2659         r = info->hdr_len + sizeof(u_int32_t);
2660         if ((info->flag & FWTI_BLOCK_ASY) != 0)
2661                 r += roundup2(fp->mode.wreqb.len, sizeof(u_int32_t));
2662
2663         if (r == sizeof(u_int32_t))
2664                 /* XXX */
2665                 device_printf(sc->fc.dev, "Unknown tcode %d\n",
2666                                                 fp->mode.common.tcode);
2667
2668         if (r > dbch->xferq.psize) {
2669                 device_printf(sc->fc.dev, "Invalid packet length %d\n", r);
2670                 /* panic ? */
2671         }
2672
2673         return r;
2674 }
2675
2676 static void
2677 fwohci_arcv_free_buf(struct fwohci_dbch *dbch, struct fwohcidb_tr *db_tr)
2678 {
2679         struct fwohcidb *db = &db_tr->db[0];
2680
2681         FWOHCI_DMA_CLEAR(db->db.desc.depend, 0xf);
2682         FWOHCI_DMA_WRITE(db->db.desc.res, dbch->xferq.psize);
2683         FWOHCI_DMA_SET(dbch->bottom->db[0].db.desc.depend, 1);
2684         fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE);
2685         dbch->bottom = db_tr;
2686 }
2687
2688 static void
2689 fwohci_arcv(struct fwohci_softc *sc, struct fwohci_dbch *dbch, int count)
2690 {
2691         struct fwohcidb_tr *db_tr;
2692         struct iovec vec[2];
2693         struct fw_pkt pktbuf;
2694         int nvec;
2695         struct fw_pkt *fp;
2696         u_int8_t *ld;
2697         u_int32_t stat, off, status;
2698         u_int spd;
2699         int len, plen, hlen, pcnt, offset;
2700         caddr_t buf;
2701         int resCount;
2702
2703         if(&sc->arrq == dbch){
2704                 off = OHCI_ARQOFF;
2705         }else if(&sc->arrs == dbch){
2706                 off = OHCI_ARSOFF;
2707         }else{
2708                 return;
2709         }
2710
2711         crit_enter();
2712         db_tr = dbch->top;
2713         pcnt = 0;
2714         /* XXX we cannot handle a packet which lies in more than two buf */
2715         fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTREAD);
2716         fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTWRITE);
2717         status = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) >> OHCI_STATUS_SHIFT;
2718         resCount = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) & OHCI_COUNT_MASK;
2719 #if 0
2720         kprintf("status 0x%04x, resCount 0x%04x\n", status, resCount);
2721 #endif
2722         while (status & OHCI_CNTL_DMA_ACTIVE) {
2723                 len = dbch->xferq.psize - resCount;
2724                 ld = (u_int8_t *)db_tr->buf;
2725                 if (dbch->pdb_tr == NULL) {
2726                         len -= dbch->buf_offset;
2727                         ld += dbch->buf_offset;
2728                 }
2729                 if (len > 0)
2730                         bus_dmamap_sync(dbch->dmat, db_tr->dma_map,
2731                                         BUS_DMASYNC_POSTREAD);
2732                 while (len > 0 ) {
2733                         if (count >= 0 && count-- == 0)
2734                                 goto out;
2735                         if(dbch->pdb_tr != NULL){
2736                                 /* we have a fragment in previous buffer */
2737                                 int rlen;
2738
2739                                 offset = dbch->buf_offset;
2740                                 if (offset < 0)
2741                                         offset = - offset;
2742                                 buf = dbch->pdb_tr->buf + offset;
2743                                 rlen = dbch->xferq.psize - offset;
2744                                 if (firewire_debug)
2745                                         kprintf("rlen=%d, offset=%d\n",
2746                                                 rlen, dbch->buf_offset);
2747                                 if (dbch->buf_offset < 0) {
2748                                         /* splitted in header, pull up */
2749                                         char *p;
2750
2751                                         p = (char *)&pktbuf;
2752                                         bcopy(buf, p, rlen);
2753                                         p += rlen;
2754                                         /* this must be too long but harmless */
2755                                         rlen = sizeof(pktbuf) - rlen;
2756                                         if (rlen < 0)
2757                                                 kprintf("why rlen < 0\n");
2758                                         bcopy(db_tr->buf, p, rlen);
2759                                         ld += rlen;
2760                                         len -= rlen;
2761                                         hlen = fwohci_arcv_swap(&pktbuf, sizeof(pktbuf));
2762                                         if (hlen < 0) {
2763                                                 kprintf("hlen < 0 shouldn't happen");
2764                                         }
2765                                         offset = sizeof(pktbuf);
2766                                         vec[0].iov_base = (char *)&pktbuf;
2767                                         vec[0].iov_len = offset;
2768                                 } else {
2769                                         /* splitted in payload */
2770                                         offset = rlen;
2771                                         vec[0].iov_base = buf;
2772                                         vec[0].iov_len = rlen;
2773                                 }
2774                                 fp=(struct fw_pkt *)vec[0].iov_base;
2775                                 nvec = 1;
2776                         } else {
2777                                 /* no fragment in previous buffer */
2778                                 fp=(struct fw_pkt *)ld;
2779                                 hlen = fwohci_arcv_swap(fp, len);
2780                                 if (hlen == 0)
2781                                         /* XXX need reset */
2782                                         goto out;
2783                                 if (hlen < 0) {
2784                                         dbch->pdb_tr = db_tr;
2785                                         dbch->buf_offset = - dbch->buf_offset;
2786                                         /* sanity check */
2787                                         if (resCount != 0) 
2788                                                 kprintf("resCount = %d !?\n",
2789                                                     resCount);
2790                                         /* XXX clear pdb_tr */
2791                                         goto out;
2792                                 }
2793                                 offset = 0;
2794                                 nvec = 0;
2795                         }
2796                         plen = fwohci_get_plen(sc, dbch, fp) - offset;
2797                         if (plen < 0) {
2798                                 /* minimum header size + trailer
2799                                 = sizeof(fw_pkt) so this shouldn't happens */
2800                                 kprintf("plen(%d) is negative! offset=%d\n",
2801                                     plen, offset);
2802                                 /* XXX clear pdb_tr */
2803                                 goto out;
2804                         }
2805                         if (plen > 0) {
2806                                 len -= plen;
2807                                 if (len < 0) {
2808                                         dbch->pdb_tr = db_tr;
2809                                         if (firewire_debug)
2810                                                 kprintf("splitted payload\n");
2811                                         /* sanity check */
2812                                         if (resCount != 0) 
2813                                                 kprintf("resCount = %d !?\n",
2814                                                     resCount);
2815                                         /* XXX clear pdb_tr */
2816                                         goto out;
2817                                 }
2818                                 vec[nvec].iov_base = ld;
2819                                 vec[nvec].iov_len = plen;
2820                                 nvec ++;
2821                                 ld += plen;
2822                         }
2823                         dbch->buf_offset = ld - (u_int8_t *)db_tr->buf;
2824                         if (nvec == 0)
2825                                 kprintf("nvec == 0\n");
2826
2827 /* DMA result-code will be written at the tail of packet */
2828 #if BYTE_ORDER == BIG_ENDIAN
2829                         stat = FWOHCI_DMA_READ(((struct fwohci_trailer *)(ld - sizeof(struct fwohci_trailer)))->stat) >> 16;
2830 #else
2831                         stat = ((struct fwohci_trailer *)(ld - sizeof(struct fwohci_trailer)))->stat;
2832 #endif
2833 #if 0
2834                         kprintf("plen: %d, stat %x\n",
2835                             plen ,stat);
2836 #endif
2837                         spd = (stat >> 5) & 0x3;
2838                         stat &= 0x1f;
2839                         switch(stat){
2840                         case FWOHCIEV_ACKPEND:
2841 #if 0
2842                                 kprintf("fwohci_arcv: ack pending tcode=0x%x..\n", fp->mode.common.tcode);
2843 #endif
2844                                 /* fall through */
2845                         case FWOHCIEV_ACKCOMPL:
2846                         {
2847                                 struct fw_rcv_buf rb;
2848
2849                                 if ((vec[nvec-1].iov_len -=
2850                                         sizeof(struct fwohci_trailer)) == 0)
2851                                         nvec--; 
2852                                 rb.fc = &sc->fc;
2853                                 rb.vec = vec;
2854                                 rb.nvec = nvec;
2855                                 rb.spd = spd;
2856                                 fw_rcv(&rb);
2857                                 break;
2858                         }
2859                         case FWOHCIEV_BUSRST:
2860                                 if (sc->fc.status != FWBUSRESET) 
2861                                         kprintf("got BUSRST packet!?\n");
2862                                 break;
2863                         default:
2864                                 device_printf(sc->fc.dev, "Async DMA Receive error err = %02x %s\n", stat, fwohcicode[stat]);
2865 #if 0 /* XXX */
2866                                 goto out;
2867 #endif
2868                                 break;
2869                         }
2870                         pcnt ++;
2871                         if (dbch->pdb_tr != NULL) {
2872                                 fwohci_arcv_free_buf(dbch, dbch->pdb_tr);
2873                                 dbch->pdb_tr = NULL;
2874                         }
2875
2876                 }
2877 out:
2878                 if (resCount == 0) {
2879                         /* done on this buffer */
2880                         if (dbch->pdb_tr == NULL) {
2881                                 fwohci_arcv_free_buf(dbch, db_tr);
2882                                 dbch->buf_offset = 0;
2883                         } else
2884                                 if (dbch->pdb_tr != db_tr)
2885                                         kprintf("pdb_tr != db_tr\n");
2886                         db_tr = STAILQ_NEXT(db_tr, link);
2887                         status = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res)
2888                                                 >> OHCI_STATUS_SHIFT;
2889                         resCount = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res)
2890                                                 & OHCI_COUNT_MASK;
2891                         /* XXX check buffer overrun */
2892                         dbch->top = db_tr;
2893                 } else {
2894                         dbch->buf_offset = dbch->xferq.psize - resCount;
2895                         break;
2896                 }
2897                 /* XXX make sure DMA is not dead */
2898         }
2899 #if 0
2900         if (pcnt < 1)
2901                 kprintf("fwohci_arcv: no packets\n");
2902 #endif
2903         crit_exit();
2904 }