2 ppcskel - a Free Software replacement for the Nintendo/BroadOn bootloader.
5 Copyright (C) 2009 Bernhard Urban <lewurm@gmx.net>
6 Copyright (C) 2009 Sebastian Falbesoner <sebastian.falbesoner@gmail.com>
8 # This code is licensed to you under the terms of the GNU GPL, version 2;
9 # see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
12 #include "../../bootmii_ppc.h"
13 #include "../../hollywood.h"
14 #include "../../irq.h"
15 #include "../../string.h"
16 #include "../../malloc.h"
19 #include "../usbspec/usb11spec.h"
21 // macro for accessing u32 variables that need to be in little endian byte order;
22 // whenever you read or write from an u32 field that the ohci host controller
23 // will read or write from too, use this macro for access!
24 #define ACCESS_LE(dword) (u32)( (((dword) & 0xFF000000) >> 24) | \
25 (((dword) & 0x00FF0000) >> 8) | \
26 (((dword) & 0x0000FF00) << 8) | \
27 (((dword) & 0x000000FF) << 24) )
29 static struct endpoint_descriptor *allocate_endpoint();
30 static struct general_td *allocate_general_td(size_t);
31 static void control_quirk();
32 static void dbg_op_state();
33 static void dbg_td_flag(u32 flag);
34 static void configure_ports(u8 from_init);
35 static void setup_port(u32 reg, u8 from_init);
37 static struct ohci_hcca hcca_oh0;
40 static struct endpoint_descriptor *allocate_endpoint()
42 struct endpoint_descriptor *ep;
43 //memalign instead of calloc doesn't work here?! WTF
44 ep = (struct endpoint_descriptor *)memalign(sizeof(struct endpoint_descriptor), 16);
45 ep->flags = ACCESS_LE(OHCI_ENDPOINT_GENERAL_FORMAT);
46 ep->headp = ep->tailp = ep->nexted = ACCESS_LE(0);
50 static struct general_td *allocate_general_td(size_t bsize)
52 struct general_td *td;
53 td = (struct general_td *)memalign(sizeof(struct general_td), 16);
54 td->flags = ACCESS_LE(0);
56 td->nexttd = ACCESS_LE(virt_to_phys(td));
57 //td->nexttd = ACCESS_LE(0);
59 td->cbp = td->be = ACCESS_LE(0);
61 td->cbp = ACCESS_LE(virt_to_phys(memalign(bsize, 16))); //memailgn required here?
62 //td->cbp = ACCESS_LE(virt_to_phys(malloc(bsize)));
63 td->be = ACCESS_LE(ACCESS_LE(td->cbp) + bsize - 1);
68 static void control_quirk()
70 static struct endpoint_descriptor *ed = 0; /* empty ED */
71 static struct general_td *td = 0; /* dummy TD */
78 * Allocate and keep a special empty ED with just a dummy TD.
81 ed = allocate_endpoint();
85 td = allocate_general_td(0);
92 #define ED_MASK ((u32)~0x0f)
93 ed->tailp = ed->headp = ACCESS_LE(virt_to_phys((void*) ((u32)td & ED_MASK)));
94 ed->flags |= ACCESS_LE(OHCI_ENDPOINT_DIRECTION_OUT);
98 * The OHCI USB host controllers on the Nintendo Wii
99 * video game console stop working when new TDs are
100 * added to a scheduled control ED after a transfer has
101 * has taken place on it.
103 * Before scheduling any new control TD, we make the
104 * controller happy by always loading a special control ED
105 * with a single dummy TD and letting the controller attempt
107 * The controller won't do anything with it, as the special
108 * ED has no TDs, but it will keep the controller from failing
109 * on the next transfer.
111 head = read32(OHCI0_HC_CTRL_HEAD_ED);
113 printf("head: 0x%08X\n", head);
115 * Load the special empty ED and tell the controller to
116 * process the control list.
118 sync_after_write(ed, 16);
119 sync_after_write(td, 16);
120 write32(OHCI0_HC_CTRL_HEAD_ED, virt_to_phys(ed));
122 status = read32(OHCI0_HC_CONTROL);
123 set32(OHCI0_HC_CONTROL, OHCI_CTRL_CLE);
124 write32(OHCI0_HC_COMMAND_STATUS, OHCI_CLF);
126 /* spin until the controller is done with the control list */
127 current = read32(OHCI0_HC_CTRL_CURRENT_ED);
130 current = read32(OHCI0_HC_CTRL_CURRENT_ED);
133 printf("current: 0x%08X\n", current);
135 /* restore the old control head and control settings */
136 write32(OHCI0_HC_CONTROL, status);
137 write32(OHCI0_HC_CTRL_HEAD_ED, head);
144 static void dbg_op_state()
146 switch (read32(OHCI0_HC_CONTROL) & OHCI_CTRL_HCFS) {
147 case OHCI_USB_SUSPEND:
148 printf("ohci-- OHCI_USB_SUSPEND\n");
151 printf("ohci-- OHCI_USB_RESET\n");
154 printf("ohci-- OHCI_USB_OPER\n");
156 case OHCI_USB_RESUME:
157 printf("ohci-- OHCI_USB_RESUME\n");
162 static void dbg_td_flag(u32 flag)
164 printf("**************** dbg_td_flag: 0x%08X ***************\n", flag);
165 printf("CC: %X\tshould be 0, see page 32 (ohci spec)\n", (flag>>28)&0xf);
166 printf("EC: %X\tsee page 20 (ohci spec)\n", (flag>>26)&3);
167 printf(" T: %X\n", (flag>>24)&3);
168 printf("DI: %X\n", (flag>>21)&7);
169 printf("DP: %X\n", (flag>>19)&3);
170 printf(" R: %X\n", (flag>>18)&1);
171 printf("********************************************************\n");
177 * Enqueue a transfer descriptor.
179 u8 hcdi_enqueue(usb_transfer_descriptor *td) {
180 control_quirk(); //required? YES! :O
183 static struct endpoint_descriptor dummyconfig;
184 dummyconfig.flags = ACCESS_LE(OHCI_ENDPOINT_GENERAL_FORMAT);
185 dummyconfig.headp = dummyconfig.tailp = dummyconfig.nexted = ACCESS_LE(0);
187 printf( "===========================\n"
188 "===========================\n");
189 sync_before_read(&hcca_oh0, 256);
190 printf("done head (nach sync): 0x%08X\n", ACCESS_LE(hcca_oh0.done_head));
191 printf("HCCA->frame_no: %d\nhcca->hccapad1: %d\n",
192 ((ACCESS_LE(hcca_oh0.frame_no) & 0xffff)>>16),
193 ACCESS_LE(hcca_oh0.frame_no)&0x0000ffff );
195 struct general_td *tmptd = allocate_general_td(td->actlen);
196 (void) memcpy((void*) (phys_to_virt(ACCESS_LE(tmptd->cbp))), td->buffer, td->actlen);
198 tmptd->flags &= ACCESS_LE(~OHCI_TD_DIRECTION_PID_MASK);
201 printf("pid_setup\n");
202 tmptd->flags |= ACCESS_LE(OHCI_TD_DIRECTION_PID_SETUP);
206 tmptd->flags |= ACCESS_LE(OHCI_TD_DIRECTION_PID_OUT);
210 tmptd->flags |= ACCESS_LE(OHCI_TD_DIRECTION_PID_IN);
213 tmptd->flags |= ACCESS_LE((td->togl) ? OHCI_TD_TOGGLE_1 : OHCI_TD_TOGGLE_0);
215 printf("tmptd hexdump (before) 0x%08X:\n", tmptd);
216 hexdump(tmptd, sizeof(struct general_td));
217 //save buffer adress here; HC may change tmptd->cbp
218 tmptdbuffer = phys_to_virt(ACCESS_LE(tmptd->cbp));
219 printf("tmptd->cbp hexdump (before) 0x%08X:\n", phys_to_virt(ACCESS_LE(tmptd->cbp)));
220 hexdump((void*) phys_to_virt(ACCESS_LE(tmptd->cbp)), td->actlen);
222 sync_after_write(tmptd, sizeof(struct general_td));
223 sync_after_write((void*) phys_to_virt(ACCESS_LE(tmptd->cbp)), td->actlen);
225 #define ED_MASK ((u32)~0x0f)
226 dummyconfig.headp = ACCESS_LE(virt_to_phys((void*) ((u32)tmptd & ED_MASK)));
228 dummyconfig.flags |= ACCESS_LE(OHCI_ENDPOINT_LOW_SPEED |
229 OHCI_ENDPOINT_SET_DEVICE_ADDRESS(td->devaddress) |
230 OHCI_ENDPOINT_SET_ENDPOINT_NUMBER(td->endpoint) |
231 OHCI_ENDPOINT_SET_MAX_PACKET_SIZE(td->maxp));
233 printf("dummyconfig hexdump (before) 0x%08X:\n", &dummyconfig);
234 hexdump((void*) &dummyconfig, 16);
236 sync_after_write(&dummyconfig, 16);
237 write32(OHCI0_HC_CTRL_HEAD_ED, virt_to_phys(&dummyconfig));
239 printf("OHCI_CTRL_CLE: 0x%08X || ", read32(OHCI0_HC_CONTROL)&OHCI_CTRL_CLE);
240 printf("OHCI_CLF: 0x%08X\n", read32(OHCI0_HC_COMMAND_STATUS)&OHCI_CLF);
241 set32(OHCI0_HC_CONTROL, OHCI_CTRL_CLE);
242 write32(OHCI0_HC_COMMAND_STATUS, OHCI_CLF);
244 printf("+++++++++++++++++++++++++++++\n");
245 /* spin until the controller is done with the control list */
246 u32 current = read32(OHCI0_HC_CTRL_CURRENT_ED);
247 printf("current: 0x%08X\n", current);
249 //don't use this quirk stuff here!
253 current = read32(OHCI0_HC_CTRL_CURRENT_ED);
258 current = read32(OHCI0_HC_CTRL_CURRENT_ED);
259 printf("current: 0x%08X\n", current);
260 printf("+++++++++++++++++++++++++++++\n");
263 sync_before_read(tmptd, sizeof(struct general_td));
264 printf("tmptd hexdump (after) 0x%08X:\n", tmptd);
265 hexdump(tmptd, sizeof(struct general_td));
266 dbg_td_flag(ACCESS_LE(tmptd->flags));
268 sync_before_read((void*) phys_to_virt(ACCESS_LE(tmptd->cbp)), td->actlen);
269 printf("tmptd->cbp hexdump (after) 0x%08X:\n", phys_to_virt(ACCESS_LE(tmptd->cbp)));
270 hexdump((void*) phys_to_virt(ACCESS_LE(tmptd->cbp)), td->actlen);
272 sync_before_read(&dummyconfig, 16);
273 printf("dummyconfig hexdump (after) 0x%08X:\n", &dummyconfig);
274 hexdump((void*) &dummyconfig, 16);
276 sync_before_read(&hcca_oh0, 256);
277 printf("done head (nach sync): 0x%08X\n", ACCESS_LE(hcca_oh0.done_head));
279 struct general_td* donetd = phys_to_virt(ACCESS_LE(hcca_oh0.done_head)&~1);
280 sync_before_read(donetd, 16);
281 printf("done head hexdump: 0x%08X\n", donetd);
282 hexdump((void*) donetd, 16);
284 sync_before_read((void*) phys_to_virt(ACCESS_LE(tmptd->cbp)), td->actlen);
285 (void) memcpy((void*) (td->buffer), phys_to_virt(ACCESS_LE(tmptd->cbp)), td->actlen);
287 write32(OHCI0_HC_CONTROL, read32(OHCI0_HC_CONTROL)&~OHCI_CTRL_CLE);
288 dummyconfig.headp = dummyconfig.tailp = dummyconfig.nexted = ACCESS_LE(0);
292 * TD should be free'd after taking it from the done queue.
293 * but we are very very dirty and do it anyway :p
296 /* only when a buffer is allocated */
298 free((void*)tmptdbuffer);
304 * Remove an transfer descriptor from transfer queue.
306 u8 hcdi_dequeue(usb_transfer_descriptor *td) {
312 printf("ohci-- init\n");
315 /* disable hc interrupts */
316 set32(OHCI0_HC_INT_DISABLE, OHCI_INTR_MIE);
318 /* save fmInterval and calculate FSMPS */
319 #define FSMP(fi) (0x7fff & ((6 * ((fi) - 210)) / 7))
320 #define FI 0x2edf /* 12000 bits per frame (-1) */
321 u32 fmint = read32(OHCI0_HC_FM_INTERVAL) & 0x3fff;
323 printf("ohci-- fminterval delta: %d\n", fmint - FI);
324 fmint |= FSMP (fmint) << 16;
326 /* enable interrupts of both usb host controllers */
327 set32(EHCI_CTL, EHCI_CTL_OH0INTE | EHCI_CTL_OH1INTE | 0xe0000);
330 write32(OHCI0_HC_COMMAND_STATUS, OHCI_HCR);
334 while ((read32(OHCI0_HC_COMMAND_STATUS) & OHCI_HCR) != 0) {
336 printf("ohci-- FAILED");
342 /* disable interrupts; 2ms timelimit here!
343 now we're in the SUSPEND state ... must go OPERATIONAL
344 within 2msec else HC enters RESUME */
346 u32 cookie = irq_kill();
348 /* Tell the controller where the control and bulk lists are
349 * The lists are empty now. */
350 write32(OHCI0_HC_CTRL_HEAD_ED, 0);
351 write32(OHCI0_HC_BULK_HEAD_ED, 0);
353 /* set hcca adress */
354 sync_after_write(&hcca_oh0, 256);
355 write32(OHCI0_HC_HCCA, virt_to_phys(&hcca_oh0));
357 /* set periodicstart */
359 u32 fmInterval = read32(OHCI0_HC_FM_INTERVAL) &0x3fff;
360 u32 fit = read32(OHCI0_HC_FM_INTERVAL) & FIT;
362 write32(OHCI0_HC_FM_INTERVAL, fmint | (fit ^ FIT));
363 write32(OHCI0_HC_PERIODIC_START, ((9*fmInterval)/10)&0x3fff);
366 if ((read32(OHCI0_HC_FM_INTERVAL) & 0x3fff0000) == 0 || !read32(OHCI0_HC_PERIODIC_START)) {
367 printf("ohci-- w00t, fail!! see ohci-hcd.c:669\n");
370 /* start HC operations */
371 write32(OHCI0_HC_CONTROL, OHCI_CONTROL_INIT | OHCI_USB_OPER);
373 /* wake on ConnectStatusChange, matching external hubs */
374 write32(OHCI0_HC_RH_STATUS, /*RH_HS_DRWE |*/ RH_HS_LPSC);
376 /* Choose the interrupts we care about now, others later on demand */
377 write32(OHCI0_HC_INT_STATUS, ~0);
378 write32(OHCI0_HC_INT_ENABLE, OHCI_INTR_INIT);
381 wait_ms ((read32(OHCI0_HC_RH_DESCRIPTOR_A) >> 23) & 0x1fe);
383 configure_ports((u8)1);
389 static void configure_ports(u8 from_init)
391 printf("OHCI0_HC_RH_DESCRIPTOR_A:\t0x%08X\n", read32(OHCI0_HC_RH_DESCRIPTOR_A));
392 printf("OHCI0_HC_RH_DESCRIPTOR_B:\t0x%08X\n", read32(OHCI0_HC_RH_DESCRIPTOR_B));
393 printf("OHCI0_HC_RH_STATUS:\t\t0x%08X\n", read32(OHCI0_HC_RH_STATUS));
394 printf("OHCI0_HC_RH_PORT_STATUS_1:\t0x%08X\n", read32(OHCI0_HC_RH_PORT_STATUS_1));
395 printf("OHCI0_HC_RH_PORT_STATUS_2:\t0x%08X\n", read32(OHCI0_HC_RH_PORT_STATUS_2));
397 setup_port(OHCI0_HC_RH_PORT_STATUS_1, from_init);
398 setup_port(OHCI0_HC_RH_PORT_STATUS_2, from_init);
399 printf("configure_ports done\n");
402 static void setup_port(u32 reg, u8 from_init)
404 u32 port = read32(reg);
405 if((port & RH_PS_CCS) && ((port & RH_PS_CSC) || from_init)) {
406 write32(reg, RH_PS_CSC);
410 /* clear CSC flag, set PES and start port reset (PRS) */
411 write32(reg, RH_PS_PES);
412 while(!(read32(reg) & RH_PS_PES)) {
417 write32(reg, RH_PS_PRS);
419 /* spin until port reset is complete */
420 while(!(read32(reg) & RH_PS_PRSC)); // hint: it may stuck here
421 printf("loop done\n");
423 (void) usb_add_device();
429 /* read interrupt status */
430 u32 flags = read32(OHCI0_HC_INT_STATUS);
432 /* when all bits are set to 1 some problem occured */
433 if (flags == 0xffffffff) {
434 printf("ohci-- Houston, we have a serious problem! :(\n");
438 /* only care about interrupts that are enabled */
439 flags &= read32(OHCI0_HC_INT_ENABLE);
443 printf("OHCI Interrupt occured: but not for you! WTF?!\n");
447 printf("OHCI Interrupt occured: ");
448 /* UnrecoverableError */
449 if (flags & OHCI_INTR_UE) {
450 printf("UnrecoverableError\n");
451 /* TODO: well, I don't know... nothing,
452 * because it won't happen anyway? ;-) */
455 /* RootHubStatusChange */
456 if (flags & OHCI_INTR_RHSC) {
457 printf("RootHubStatusChange\n");
458 /* TODO: set some next_statechange variable... */
460 write32(OHCI0_HC_INT_STATUS, OHCI_INTR_RD | OHCI_INTR_RHSC);
463 else if (flags & OHCI_INTR_RD) {
464 printf("ResumeDetected\n");
465 write32(OHCI0_HC_INT_STATUS, OHCI_INTR_RD);
466 /* TODO: figure out what the linux kernel does here... */
469 /* WritebackDoneHead */
470 if (flags & OHCI_INTR_WDH) {
471 printf("WritebackDoneHead\n");
472 /* basically the linux irq handler reverse TDs to their urbs
473 * and set done_head to null.
474 * since we are polling atm, just should do the latter task.
475 * however, this won't work for now (i don't know why...)
479 sync_before_read(&hcca_oh0, 256);
480 hcca_oh0.done_head = 0;
481 sync_after_write(&hcca_oh0, 256);
485 /* TODO: handle any pending URB/ED unlinks... */
487 #define HC_IS_RUNNING() 1 /* dirty, i know... just a temporary solution */
488 if (HC_IS_RUNNING()) {
489 write32(OHCI0_HC_INT_STATUS, flags);
490 write32(OHCI0_HC_INT_ENABLE, OHCI_INTR_MIE);